/* roulang page: index */
:root {
            --primary: #C9F254;
            --primary-deep: #A6D926;
            --accent: #FF6B1A;
            --pitch: #0B1713;
            --pitch-2: #203527;
            --pagebg: #F7F8F4;
            --card: #ffffff;
            --ink: #182014;
            --sub: #627062;
            --line: #E4EADF;
            --r-md: 20px;
            --r-lg: 28px;
            --shadow: 0 12px 32px rgba(12, 30, 18, .08);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        *,
        *:before,
        *:after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font);
            background: var(--pagebg);
            color: var(--ink);
            font-size: 15.5px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        p {
            margin: 0;
        }
        h1,
        h2,
        h3,
        h4 {
            margin: 0;
            line-height: 1.3;
            font-weight: 800;
        }
        .site-wrap {
            min-height: 100vh;
        }
        .container-xl {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-xl {
                padding: 0 16px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: #081510;
            box-shadow: 0 6px 18px rgba(6, 18, 10, .4);
        }
        .header-top {
            display: flex;
            align-items: center;
            gap: 18px;
            padding-top: 10px;
            padding-bottom: 8px;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #ffffff !important;
            border-radius: 12px;
            padding: 4px 10px 4px 4px;
            transition: background .2s;
        }
        .brand:hover {
            background: rgba(255, 255, 255, .07);
        }
        .brand-mark {
            width: 40px;
            height: 40px;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #D9FF77, #A6D926);
            border-radius: 12px;
            font-weight: 900;
            color: #0B1713;
            font-size: 17px;
            letter-spacing: -.4px;
        }
        .brand-name {
            font-weight: 800;
            font-size: 18px;
            white-space: nowrap;
            letter-spacing: .2px;
        }
        .header-search {
            display: flex;
            align-items: center;
            flex: 0 1 420px;
            margin-left: auto;
            background: #13251B;
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 999px;
            transition: border-color .2s;
        }
        .header-search:focus-within {
            border-color: #C9F254;
        }
        .header-search svg {
            margin-left: 12px;
            margin-right: -2px;
            opacity: .85;
        }
        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            padding: 9px 6px 9px 0;
            width: 100%;
            min-width: 0;
            font-size: 14px;
        }
        .header-search input::placeholder {
            color: #9CB09E;
        }
        .header-search button {
            background: transparent;
            border: none;
            color: #9CB09E;
            padding: 0;
            cursor: pointer;
        }
        .header-search .search-enter {
            margin-right: 12px;
            margin-left: 6px;
            color: #C9F254;
            font-size: 15px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            margin-left: auto;
        }
        .btn-download-mini {
            background: linear-gradient(135deg, #D4FF68, #A6D926);
            color: #0B1713;
            border: none;
            border-radius: 999px;
            font-weight: 700;
            font-size: 14px;
            padding: 8px 18px;
            cursor: pointer;
            transition: all .2s;
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(201, 242, 84, .20);
        }
        .btn-download-mini:hover {
            transform: translateY(-2px);
            filter: brightness(1.04);
            box-shadow: 0 8px 20px rgba(201, 242, 84, .28);
        }
        .btn-download-mini:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .icon-btn {
            width: 38px;
            height: 38px;
            display: none;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, .2);
            background: transparent;
            color: #fff;
            cursor: pointer;
        }
        .header-channels {
            border-top: 1px solid rgba(255, 255, 255, .08);
            backdrop-filter: blur(4px);
        }
        .channels-scroll {
            max-width: 1280px;
            margin: 0 auto;
            padding: 8px 24px;
            display: flex;
            gap: 6px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channels-scroll::-webkit-scrollbar {
            display: none;
        }
        .channel-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 6px 16px;
            color: #C7D5C8;
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            cursor: pointer;
            transition: all .2s;
            background: transparent;
        }
        .channel-pill:hover {
            color: #fff;
            background: rgba(201, 242, 84, .15);
        }
        .channel-pill.active {
            background: var(--primary);
            color: #102117;
            font-weight: 800;
        }
        .mobile-search-layer {
            display: none;
            padding: 10px 16px 14px;
            border-top: 1px solid rgba(255, 255, 255, .08);
        }
        .mobile-search-layer.show {
            display: block;
        }
        .mobile-search-layer .header-search {
            max-width: none;
        }
        @media (max-width: 900px) {
            .header-search {
                display: none;
            }
            .icon-btn {
                display: inline-flex;
            }
            .header-top {
                gap: 12px;
            }
            .brand-name {
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .btn-download-mini {
                font-size: 13px;
                padding: 8px 13px;
            }
        }

        /* ===== Hero ===== */
        .hero-section {
            background-color: #0A1611;
            background-image:
                linear-gradient(90deg, rgba(11, 23, 19, .94) 0%, rgba(22, 43, 30, .78) 100%),
                repeating-linear-gradient(90deg, rgba(255, 255, 255, .045) 0 1px, transparent 1px 80px),
                repeating-linear-gradient(0deg, rgba(255, 255, 255, .03) 0 1px, transparent 1px 80px),
                url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
            position: relative;
        }
        .hero-lines {
            position: absolute;
            inset: 0;
            pointer-events: none;
            opacity: .5;
            background:
                radial-gradient(circle at 82% 20%, rgba(201, 242, 84, .12), transparent 30%),
                radial-gradient(circle at 10% 85%, rgba(255, 107, 26, .08), transparent 30%);
        }
        .hero-shell {
            position: relative;
            display: grid;
            grid-template-columns: 1.2fr .8fr;
            gap: 48px;
            padding-top: 90px;
            padding-bottom: 84px;
            align-items: center;
        }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 242, 84, .14);
            border: 1px solid rgba(201, 242, 84, .35);
            color: #D9F27B;
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .3px;
        }
        .hero-title {
            font-size: clamp(31px, 4.6vw, 52px);
            line-height: 1.2;
            font-weight: 900;
            color: #fff;
            margin-top: 24px;
        }
        .hero-title .accent-green {
            color: #C9F254;
        }
        .hero-desc {
            margin-top: 20px;
            max-width: 58ch;
            color: #D3E2D4;
            font-size: 17px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            padding: 12px 26px;
            font-weight: 700;
            font-size: 15px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: transform .18s, box-shadow .18s, background .18s, color .18s;
            white-space: nowrap;
            line-height: 1.2;
        }
        .btn:hover {
            transform: translateY(-2px);
        }
        .btn:focus-visible {
            outline: 2px solid #C9F254;
            outline-offset: 3px;
        }
        .btn-primary {
            background: linear-gradient(135deg, #D7FF74, #A6D926);
            color: #102117;
            box-shadow: 0 8px 24px rgba(201, 242, 84, .22);
        }
        .btn-primary:hover {
            filter: brightness(1.05);
            box-shadow: 0 12px 30px rgba(201, 242, 84, .3);
        }
        .btn-accent {
            background: linear-gradient(135deg, #FF7C35, #F14F0A);
            color: #FFFFFF;
            box-shadow: 0 8px 24px rgba(255, 107, 26, .25);
        }
        .btn-accent:hover {
            filter: brightness(1.03);
            box-shadow: 0 12px 32px rgba(255, 107, 26, .3);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, .06);
            border-color: rgba(255, 255, 255, .45);
            color: #fff;
        }
        .btn-ghost:hover {
            border-color: #C9F254;
            color: #C9F254;
            background: rgba(201, 242, 84, .08);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 40px;
        }
        .hero-stat {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: 16px;
            padding: 10px 18px;
            min-width: 132px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .hero-stat span {
            font-size: 12px;
            color: #A8C0AA;
        }
        .hero-stat strong {
            color: #C9F254;
            font-size: 20px;
            font-weight: 900;
            line-height: 1.2;
        }
        .hero-visual {
            position: relative;
            min-height: 520px;
        }
        .visual-device {
            position: absolute;
            right: 12px;
            top: 4px;
            width: 310px;
            height: 500px;
            background: #0D1B14;
            border: 6px solid #1D3327;
            border-radius: 38px;
            box-shadow: 0 30px 80px rgba(0, 0, 0, .45);
            overflow: hidden;
        }
        .visual-device:after {
            content: '';
            position: absolute;
            top: 10px;
            left: 50%;
            transform: translateX(-50%);
            width: 74px;
            height: 5px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .2);
            z-index: 3;
        }
        .visual-device img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 32px;
        }
        .visual-card-mini {
            position: absolute;
            left: 0;
            bottom: 62px;
            background: #fff;
            box-shadow: 0 18px 48px rgba(0, 0, 0, .28);
            border-radius: 18px;
            padding: 14px 16px;
            width: 160px;
            border-top: 4px solid #C9F254;
        }
        .visual-card-mini strong {
            font-size: 14px;
            display: block;
        }
        .visual-card-mini p {
            font-size: 12px;
            color: var(--sub);
            margin-top: 4px;
        }
        @media (max-width: 960px) {
            .hero-shell {
                grid-template-columns: 1fr;
                padding-top: 60px;
                padding-bottom: 42px;
            }
            .hero-visual {
                min-height: 440px;
                max-width: 440px;
                margin: 0 auto;
                width: 100%;
            }
            .visual-device {
                right: 10%;
            }
        }
        @media (max-width: 540px) {
            .hero-visual {
                min-height: 400px;
            }
            .visual-device {
                width: 240px;
                height: 400px;
                right: 0;
            }
            .visual-card-mini {
                width: 130px;
            }
        }

        /* ===== Section common ===== */
        .section {
            padding: 84px 0;
        }
        .section-tight {
            padding: 64px 0;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 38px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            color: #5F7F3D;
            background: rgba(166, 217, 38, .12);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 13px;
            font-weight: 700;
        }
        .section-label:before {
            content: '';
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #A6D926;
        }
        .section-title {
            font-size: clamp(24px, 3.4vw, 36px);
            color: #152015;
            margin: 16px 0 15px;
            font-weight: 900;
        }
        .section-intro {
            color: #627062;
            max-width: 65ch;
            font-size: 15.5px;
            line-height: 1.8;
        }

        /* ===== Feature cards ===== */
        .feature-card,
        .normal-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--r-md);
            box-shadow: var(--shadow);
            transition: transform .25s, box-shadow .25s;
            height: 100%;
            overflow: hidden;
        }
        .feature-card:hover,
        .normal-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 20px 44px rgba(12, 30, 18, .11);
        }
        .feature-topline {
            height: 4px;
            background: linear-gradient(90deg, #C9F254, #A6D926);
        }
        .feature-body {
            padding: 26px 26px 30px;
        }
        .feature-icon {
            width: 50px;
            height: 50px;
            border-radius: 15px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #F0F7E3;
            color: #5F8B24;
        }
        .feature-title {
            font-size: 21px;
            margin: 18px 0 10px;
        }
        .feature-desc {
            color: var(--sub);
            line-height: 1.75;
            font-size: 14.5px;
        }

        /* ===== Gallery ===== */
        .gallery-section {
            background: #EDF2E8;
        }
        .gallery-wrap {
            display: grid;
            grid-template-columns: .82fr 1.18fr;
            gap: 30px;
            align-items: stretch;
        }
        .gallery-tabs {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .gallery-tab {
            text-align: left;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            padding: 18px 20px;
            cursor: pointer;
            line-height: 1.5;
            transition: all .22s;
            box-shadow: 0 4px 12px rgba(12, 30, 18, .03);
        }
        .gallery-tab:hover {
            border-color: rgba(166, 217, 38, .6);
            transform: translateX(3px);
        }
        .gallery-tab.active {
            border-color: #A6D926;
            box-shadow: 0 14px 34px rgba(96, 145, 20, .12);
            background: linear-gradient(0deg, rgba(201, 242, 84, .1), #fff);
            border-left: 5px solid #A6D926;
        }
        .gallery-tab strong {
            display: block;
            font-size: 17px;
            color: #152015;
        }
        .gallery-tab p {
            font-size: 13.5px;
            color: var(--sub);
            margin-top: 6px;
        }
        .gallery-view {
            background: #13251B;
            border-radius: var(--r-lg);
            min-height: 420px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 20px 54px rgba(11, 23, 19, .30);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .gallery-view img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            opacity: 0;
            transition: opacity .45s;
        }
        .gallery-view img.active {
            opacity: 1;
        }
        .gallery-tag {
            position: absolute;
            left: 18px;
            bottom: 18px;
            z-index: 4;
            background: rgba(11, 23, 19, .74);
            border: 1px solid rgba(201, 242, 84, .4);
            color: #fff;
            padding: 8px 16px;
            border-radius: 999px;
            backdrop-filter: blur(6px);
            font-size: 13px;
        }
        .gallery-dots {
            position: absolute;
            right: 18px;
            top: 18px;
            z-index: 5;
            display: flex;
            gap: 7px;
        }
        .gallery-dots i {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .5);
            transition: all .25s;
        }
        .gallery-dots i.on {
            background: #C9F254;
            transform: scale(1.3);
        }
        @media (max-width: 960px) {
            .gallery-wrap {
                grid-template-columns: 1fr;
            }
            .gallery-tabs {
                flex-direction: row;
                overflow-x: auto;
                padding-bottom: 6px;
                scrollbar-width: none;
            }
            .gallery-tabs::-webkit-scrollbar {
                display: none;
            }
            .gallery-tab {
                min-width: 240px;
                flex-shrink: 0;
            }
            .gallery-view {
                min-height: 330px;
            }
        }

        /* ===== Spec cards ===== */
        .spec-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 22px;
            box-shadow: var(--shadow);
            padding: 24px;
        }
        .spec-card h3 {
            font-size: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .spec-dl {
            border-top: 1px solid var(--line);
            padding-top: 8px;
            display: grid;
            gap: 9px;
        }
        .spec-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            align-items: baseline;
        }
        .spec-row dd,
        .spec-row dt {
            margin: 0;
            font-size: 14px;
        }
        .spec-row dt {
            color: var(--sub);
        }
        .spec-row dd {
            text-align: right;
            color: var(--ink);
            font-weight: 600;
        }

        /* ===== Reviews ===== */
        .review-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 22px;
            box-shadow: 0 10px 28px rgba(12, 30, 18, .06);
            padding: 24px;
            margin-bottom: 28px;
        }
        .review-head {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .avatar {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #DFF5B0;
            color: #3B5B18;
            font-weight: 800;
            flex-shrink: 0;
        }
        .review-user strong {
            font-size: 15px;
            display: block;
        }
        .review-user span {
            font-size: 13px;
            color: var(--sub);
        }
        .stars {
            color: #FFB441;
            font-size: 14px;
            margin: 12px 0 6px;
            letter-spacing: 2px;
        }
        .review-text {
            color: #3D4E3C;
            line-height: 1.8;
            font-size: 14.5px;
        }

        /* ===== News / CMS list ===== */
        .latest-section {
            background: #E9EFE4;
        }
        .latest-grid {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 24px;
            align-items: start;
        }
        .featured-news {
            background: #fff;
            border-radius: 22px;
            box-shadow: 0 16px 44px rgba(12, 30, 18, .10);
            border-top: 4px solid #A6D926;
            padding: 26px;
        }
        .news-card {
            background: #fff;
            border-radius: 18px;
            padding: 18px 20px;
            border: 1px solid var(--line);
            transition: border .2s, transform .2s;
            position: relative;
            margin-bottom: 12px;
        }
        .news-card:hover {
            border-color: #A6D926;
            transform: translateY(-2px);
        }
        .news-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 16px;
            align-items: center;
            color: var(--sub);
            font-size: 13px;
        }
        .news-card h3,
        .featured-news h3 {
            font-size: 18px;
            margin: 8px 0 8px;
            color: #152015;
            transition: color .2s;
        }
        .featured-news h3 {
            font-size: 22px;
        }
        .news-card h3 a:hover,
        .featured-news h3 a:hover {
            color: #6EA514;
        }
        .news-excerpt {
            color: var(--sub);
            font-size: 14px;
            line-height: 1.7;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            background: rgba(166, 217, 38, .15);
            color: #477220;
            font-size: 12px;
            padding: 3px 11px;
            border-radius: 999px;
            font-weight: 600;
        }
        .time-note {
            color: #8DA08E;
            font-size: 12px;
        }
        .news-more {
            display: inline-flex;
            margin-top: 16px;
            color: #6B9A24;
            font-weight: 700;
            font-size: 14px;
            gap: 6px;
            align-items: center;
        }
        .news-empty {
            background: #fff;
            border: 1px dashed #A6BDA8;
            border-radius: 22px;
            padding: 48px 20px;
            text-align: center;
            color: rgba(11, 23, 19, .6);
        }
        .news-empty .empty-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: #F3F7ED;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        @media (max-width: 920px) {
            .latest-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Download CTA ===== */
        .download-zone {
            background-color: #0A1611;
            background-image:
                linear-gradient(120deg, rgba(11, 23, 19, .92), rgba(32, 53, 39, .82)),
                url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
        }
        .download-zone h2 {
            color: #fff;
            font-size: clamp(24px, 3.2vw, 34px);
        }
        .download-buttons-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border .2s;
        }
        .faq-item.open {
            border-color: #B9D96A;
        }
        .faq-q {
            width: 100%;
            text-align: left;
            background: transparent;
            border: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            gap: 16px;
            cursor: pointer;
            color: var(--ink);
            font-weight: 700;
            font-size: 16px;
            transition: background .2s;
        }
        .faq-q:hover {
            background: #F9FBEF;
        }
        .faq-icon {
            flex-shrink: 0;
            color: #6FA133;
            transition: transform .3s;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-a {
            padding: 0 22px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .4s ease;
            color: #3B4B3B;
            line-height: 1.8;
            font-size: 15px;
        }
        .faq-item.open .faq-a {
            padding: 0 22px 20px;
            max-height: 320px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #07120C;
            color: #B3C7B4;
            padding-top: 70px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.35fr .7fr .8fr 1fr;
            gap: 44px;
            padding-bottom: 40px;
        }
        .footer-brand .brand-name {
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.9;
            margin-top: 18px;
            color: #93AA96;
        }
        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .footer-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 11px;
            font-size: 14px;
        }
        .footer-list a {
            color: #A6BFAA;
            display: inline-block;
            transition: color .2s;
        }
        .footer-list a:hover {
            color: #C9F254;
        }
        .footer-note {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 0;
            font-size: 13px;
            color: #708A73;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
        }
        @media (max-width: 980px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }
            .section {
                padding: 60px 0;
            }
        }

        /* Empty image fallback, if local asset not loaded */
        .img-fallback {
            background: linear-gradient(135deg, #E9F2D8, #F6F0C4);
        }

        /* Scrollbar hidden utility */
        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .no-scrollbar {
            scrollbar-width: none;
        }

/* roulang page: article */
:root {
            --primary: #C9F254;
            --primary-dark: #A6D926;
            --accent: #FF6B1A;
            --bg-deep: #0B1713;
            --bg-panel: #203527;
            --page-bg: #F7F8F4;
            --card-bg: #FFFFFF;
            --ink: #182014;
            --ink-secondary: #627062;
            --line: #E4EADF;
            --radius-lg: 24px;
            --radius-md: 20px;
            --radius-sm: 12px;
            --shadow-soft: 0 12px 32px rgba(12, 30, 18, 0.08);
            --shadow-float: 0 18px 40px rgba(12, 30, 18, 0.12);
            --transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--page-bg);
            color: var(--ink);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        .container-light {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-article {
            max-width: 800px;
            margin: 0 auto;
            padding-left: 22px;
            padding-right: 22px;
        }

        /* 头部 */
        .site-header-wrap {
            background: #0c1b16;
            display: block;
        }

        .header-top {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 13px 0 10px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 9px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #0b1713;
            font-weight: 900;
            font-size: 15px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            letter-spacing: -0.3px;
        }

        .brand-name {
            font-size: 19px;
            font-weight: 900;
            color: #fff;
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

        .header-search {
            flex: 1;
            max-width: 300px;
            margin-left: auto;
            position: relative;
        }

        .header-search svg {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            width: 16px;
            height: 16px;
            color: #889a8e;
            pointer-events: none;
        }

        .header-search input {
            width: 100%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 999px;
            padding: 8px 30px 8px 34px;
            font-size: 13px;
            color: #fff;
            outline: none;
            transition: var(--transition);
        }

        .header-search input::placeholder {
            color: #7f8f83;
        }

        .header-search input:focus {
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.12);
        }

        .header-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #C9F254 0%, #9cca16 100%);
            color: #0c1b16;
            font-weight: 800;
            font-size: 14px;
            padding: 9px 18px;
            border-radius: 999px;
            gap: 6px;
            white-space: nowrap;
            transition: var(--transition);
            flex-shrink: 0;
            border: none;
            cursor: pointer;
            box-shadow: 0 2px 10px rgba(201, 242, 84, 0.15);
        }

        .header-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(201, 242, 84, 0.3);
            color: #0c1b16;
        }

        .header-mobile-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            width: 38px;
            height: 38px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            flex-shrink: 0;
            color: #fff;
        }

        .header-channels {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 9px 0;
        }

        .channels-scroll {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            white-space: nowrap;
        }

        .channels-scroll::-webkit-scrollbar {
            display: none;
        }

        .channel-pill {
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            font-weight: 600;
            color: #a1b3a7;
            background: transparent;
            padding: 7px 18px;
            border-radius: 999px;
            transition: var(--transition);
            flex-shrink: 0;
            border: 1px solid transparent;
        }

        .channel-pill:hover {
            color: #fff;
            background: rgba(201, 242, 84, 0.12);
            border-color: rgba(201, 242, 84, 0.2);
        }

        .channel-pill.active {
            background: var(--primary);
            color: #0c1b16;
            font-weight: 800;
        }

        /* 文章 hero 头部 */
        .article-hero {
            background: linear-gradient(145deg, #0b1713 0%, #10241c 55%, #183228 100%);
            padding: 52px 0 60px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 25% 20%, rgba(201, 242, 84, 0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 85% 80%, rgba(255, 107, 26, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .article-hero::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(201, 242, 84, 0.3), transparent);
        }

        .article-hero .container-article {
            position: relative;
            z-index: 2;
        }

        .article-cat {
            display: inline-block;
            background: rgba(201, 242, 84, 0.15);
            border: 1px solid rgba(201, 242, 84, 0.25);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 999px;
            letter-spacing: 0.4px;
            margin-bottom: 16px;
        }

        .article-hero h1 {
            color: #fff;
            font-size: clamp(28px, 4.2vw, 42px);
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: 0.2px;
            margin-bottom: 18px;
            max-width: 760px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 22px;
            align-items: center;
            color: #93a89b;
            font-size: 13px;
            margin-top: 5px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-meta svg {
            width: 14px;
            height: 14px;
            opacity: 0.55;
        }

        /* 面包屑 */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 12px 0;
        }

        .breadcrumb {
            font-size: 13px;
            color: var(--ink-secondary);
            display: flex;
            align-items: center;
            gap: 7px;
            flex-wrap: nowrap;
            overflow: hidden;
            white-space: nowrap;
        }

        .breadcrumb a {
            color: var(--ink-secondary);
            flex-shrink: 0;
        }

        .breadcrumb a:hover {
            color: var(--primary-dark);
        }

        .breadcrumb .sep {
            color: #aab7ac;
            flex-shrink: 0;
        }

        .breadcrumb .cur {
            overflow: hidden;
            text-overflow: ellipsis;
            color: var(--ink);
            font-weight: 600;
        }

        /* 正文 */
        .article-body-wrap {
            padding: 44px 0 20px;
            background: var(--page-bg);
        }

        .article-content {
            font-size: 16.5px;
            line-height: 1.85;
            color: #2b332c;
        }

        .article-content p {
            margin-bottom: 1.6em;
        }

        .article-content h2 {
            font-size: 23px;
            font-weight: 800;
            margin-top: 1.8em;
            margin-bottom: 0.7em;
            color: var(--ink);
            padding-left: 13px;
            border-left: 3px solid var(--primary-dark);
        }

        .article-content h3 {
            font-size: 19px;
            font-weight: 700;
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: var(--ink);
        }

        .article-content ul {
            margin-bottom: 1.6em;
            padding-left: 0;
            list-style: none;
        }

        .article-content ul li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 0.55em;
        }

        .article-content ul li::before {
            content: "";
            position: absolute;
            left: 2px;
            top: 0.65em;
            width: 7px;
            height: 7px;
            background: var(--primary-dark);
            border-radius: 2px;
            transform: rotate(45deg);
        }

        .article-content ol {
            padding-left: 22px;
            margin-bottom: 1.6em;
        }

        .article-content ol li {
            margin-bottom: 0.4em;
            padding-left: 4px;
        }

        .article-content a {
            color: #4d7c0f;
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(77, 124, 15, 0.4);
        }

        .article-content a:hover {
            color: var(--accent);
        }

        .article-content blockquote {
            background: #f0f5ea;
            border-left: 4px solid var(--primary-dark);
            padding: 16px 18px;
            border-radius: 0 14px 14px 0;
            margin: 1.4em 0;
            color: #3c463b;
            font-size: 15.5px;
        }

        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }

        .article-content img {
            border-radius: 18px;
            margin: 1.5em 0;
            box-shadow: var(--shadow-soft);
        }

        .article-content table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            margin: 1.6em 0;
            font-size: 14.5px;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--line);
        }

        .article-content th {
            background: #edf2e8;
            font-weight: 700;
            padding: 12px 14px;
            text-align: left;
            border-bottom: 1px solid var(--line);
            color: var(--ink);
        }

        .article-content td {
            padding: 11px 14px;
            border-bottom: 1px solid var(--line);
        }

        .article-content tr:last-child td {
            border-bottom: none;
        }

        /* 分隔 */
        .article-divider {
            margin: 38px 0 34px;
            border-top: 1px solid var(--line);
            position: relative;
        }

        .article-divider::before {
            content: "";
            position: absolute;
            top: -3px;
            left: 50%;
            width: 60px;
            height: 5px;
            transform: translateX(-50%);
            background: linear-gradient(90deg, transparent, var(--primary-dark), transparent);
            border-radius: 99px;
        }

        /* 作者信息区 */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 26px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            background: rgba(201, 242, 84, 0.18);
            border: 1px solid rgba(166, 217, 38, 0.25);
            color: #4e6b1e;
            font-size: 12.5px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 0.2px;
        }

        .tag:hover {
            background: rgba(201, 242, 84, 0.3);
        }

        /* 相关文章 */
        .related-section {
            background: #fff;
            padding: 52px 0 60px;
            border-top: 1px solid var(--line);
        }

        .related-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 26px;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 12.5px;
            font-weight: 800;
            color: var(--primary-dark);
            background: rgba(201, 242, 84, 0.15);
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.6px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .related-head h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 900;
            color: var(--ink);
            line-height: 1.3;
        }

        .btn-back-channel {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--ink);
            background: #f2f5ee;
            border: 1px solid var(--line);
            padding: 10px 20px;
            border-radius: 999px;
            transition: var(--transition);
        }

        .btn-back-channel:hover {
            background: var(--primary);
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(201, 242, 84, 0.3);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--page-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: block;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .related-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-float);
            border-color: rgba(166, 217, 38, 0.45);
        }

        .related-card:hover::before {
            transform: scaleX(1);
        }

        .rc-label {
            font-size: 12px;
            color: var(--primary-dark);
            font-weight: 700;
            letter-spacing: 0.4px;
            margin-bottom: 12px;
            display: block;
        }

        .related-card h3 {
            font-size: 16.5px;
            font-weight: 800;
            line-height: 1.5;
            margin-bottom: 9px;
            color: var(--ink);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card p {
            font-size: 13.5px;
            color: var(--ink-secondary);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .rc-date {
            font-size: 12.5px;
            color: #8ba08d;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* 未找到 */
        .not-found {
            max-width: 560px;
            margin: 30px auto 40px;
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--line);
            text-align: center;
            padding: 52px 34px;
            box-shadow: var(--shadow-soft);
        }

        .nf-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(201, 242, 84, 0.12);
            border-radius: 50%;
        }

        .not-found h2 {
            font-size: 24px;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: 10px;
        }

        .not-found p {
            color: var(--ink-secondary);
            margin-bottom: 24px;
            font-size: 15px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #C9F254 0%, #9cca16 100%);
            color: #0c1b16;
            font-weight: 800;
            font-size: 15px;
            padding: 12px 26px;
            border-radius: 999px;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(166, 217, 38, 0.3);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(166, 217, 38, 0.4);
            color: #0c1b16;
        }

        .btn-primary:focus-visible,
        .header-btn:focus-visible,
        .btn-back-channel:focus-visible {
            outline: 2px solid #FF6B1A;
            outline-offset: 3px;
        }

        /* 页脚 */
        .site-footer {
            background: #08110e;
            padding: 46px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
        }

        .footer-brand .brand-name {
            font-size: 18px;
        }

        .footer-desc {
            font-size: 13.5px;
            line-height: 1.75;
            color: #7f9687;
            margin-top: 14px;
            max-width: 280px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 800;
            color: #d6e0d8;
            margin-bottom: 18px;
        }

        .footer-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-list li {
            margin-bottom: 9px;
        }

        .footer-list a {
            font-size: 13px;
            color: #7f9687;
            line-height: 1.6;
        }

        .footer-list a:hover {
            color: var(--primary);
        }

        .footer-note {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            padding-top: 22px;
            font-size: 12.5px;
            color: #5d715f;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-search {
                max-width: 160px;
            }

            .brand-name {
                font-size: 17px;
            }

            .header-btn {
                padding: 8px 14px;
                font-size: 13px;
            }

            .header-mobile-toggle {
                display: inline-flex;
            }

            .article-hero {
                padding: 38px 0 46px;
            }

            .article-hero h1 {
                font-size: 26px;
                line-height: 1.4;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .related-section {
                padding: 42px 0 50px;
            }

            .article-body-wrap {
                padding: 36px 0 16px;
            }

            .footer-grid {
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .header-search {
                display: none;
            }

            .header-btn {
                margin-left: auto;
            }

            .brand-name {
                font-size: 16px;
            }

            .brand-mark {
                width: 32px;
                height: 32px;
                font-size: 13px;
                border-radius: 9px;
            }

            .channel-pill {
                font-size: 13px;
                padding: 6px 14px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .article-content {
                font-size: 16px;
            }

            .article-meta {
                gap: 8px 14px;
            }
        }

/* roulang page: category1 */
:root {
            --brand-main: #C9F254;
            --brand-deep: #A6D926;
            --brand-orange: #FF6B1A;
            --brand-dark: #0B1713;
            --brand-dark-2: #203527;
            --bg-page: #F7F8F4;
            --card-white: #FFFFFF;
            --text-main: #182014;
            --text-secondary: #627062;
            --line-soft: #E4EADF;
            --radius-card: 20px;
            --radius-large: 28px;
            --shadow-card: 0 12px 32px rgba(12, 30, 18, 0.08);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-page);
            color: var(--text-main);
            font-size: 15.5px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        a,
        button {
            transition: all .2s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

        .container-xl {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            background-color: #0B1713;
            border-bottom: 1px solid rgba(201, 242, 84, 0.15);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #F7F8F4;
            flex-shrink: 0;
            letter-spacing: 0;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--brand-main), var(--brand-deep));
            color: #0B1713;
            font-weight: 900;
            font-size: 15px;
            border-radius: 12px;
            letter-spacing: 0;
        }

        .brand-name {
            white-space: nowrap;
        }

        .header-search {
            display: none;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 999px;
            padding: 7px 16px;
            min-width: 200px;
            max-width: 240px;
            width: 100%;
        }

        .header-search svg {
            width: 16px;
            height: 16px;
            stroke: #9DB4A0;
            flex-shrink: 0;
        }

        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #E8F0E5;
            font-size: 14px;
            padding: 0 0 0 8px;
            width: 100%;
        }

        .header-search input::placeholder {
            color: #8aa088;
        }

        .header-download-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand-main), var(--brand-deep));
            color: #0B1713;
            font-weight: 700;
            font-size: 14px;
            padding: 9px 20px;
            border-radius: 999px;
            white-space: nowrap;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }

        .header-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201, 242, 84, 0.25);
        }

        .header-download-btn:focus-visible {
            outline: 2px solid var(--brand-main);
            outline-offset: 2px;
        }

        .header-channels {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }

        .channels-scroll {
            display: flex;
            gap: 8px;
            padding: 8px 0;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            white-space: nowrap;
            -webkit-overflow-scrolling: touch;
        }

        .channels-scroll::-webkit-scrollbar {
            display: none;
            height: 0;
        }

        .channel-pill {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: #A9BFAC;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .channel-pill:hover {
            background: rgba(201, 242, 84, 0.12);
            color: var(--brand-main);
        }

        .channel-pill.active {
            background: var(--brand-main);
            color: #0B1713;
            border-color: var(--brand-main);
            font-weight: 800;
        }

        .mobile-menu-btn {
            display: none;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.14);
            border-radius: 10px;
            padding: 8px;
            cursor: pointer;
            flex-shrink: 0;
            align-items: center;
            justify-content: center;
        }

        .mobile-menu-btn svg {
            width: 20px;
            height: 20px;
            stroke: #E8F0E5;
        }

        @media (min-width: 768px) {
            .header-search {
                display: flex;
            }
        }

        @media (max-width: 768px) {
            .header-top {
                flex-wrap: nowrap;
            }
            .mobile-menu-btn {
                display: inline-flex;
            }
            .header-search {
                display: none;
            }
            .header-download-btn {
                padding: 8px 14px;
                font-size: 13px;
            }
            .brand-name {
                font-size: 17px;
            }
            .container-xl {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 分类页 Hero */
        .category-hero {
            background: linear-gradient(145deg, #0B1713 0%, #162720 60%, #203527 100%);
            position: relative;
            overflow: hidden;
            padding: 60px 0 56px;
            border-bottom: 4px solid var(--brand-main);
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(201,242,84,0.06) 1px, transparent 1px),
                              linear-gradient(90deg, rgba(201,242,84,0.05) 1px, transparent 1px);
            background-size: 44px 44px;
            mask-image: radial-gradient(ellipse at 30% 40%, #000 40%, transparent 80%);
            -webkit-mask-image: radial-gradient(ellipse at 30% 40%, #000 40%, transparent 80%);
            pointer-events: none;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            top: -60px;
            right: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(201,242,84,0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .category-hero .hero-tag {
            display: inline-block;
            background: rgba(201, 242, 84, 0.15);
            color: var(--brand-main);
            font-size: 13px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            border: 1px solid rgba(201, 242, 84, 0.25);
        }

        .category-hero h1 {
            color: #F7F8F4;
            font-size: 40px;
            line-height: 1.2;
            font-weight: 900;
            margin-bottom: 14px;
            letter-spacing: 0;
        }

        .category-hero .hero-desc {
            color: #AFC0B2;
            font-size: 16px;
            line-height: 1.8;
            max-width: 62ch;
            margin-bottom: 20px;
        }

        .hero-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }

        .hero-data-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(201,242,84,0.18);
            border-radius: 999px;
            padding: 6px 16px;
            color: #DCE8DD;
            font-size: 13px;
            font-weight: 600;
        }

        .hero-data-badge span {
            color: var(--brand-main);
            font-weight: 800;
            font-size: 16px;
        }

        /* 主内容区 */
        .category-main-wrap {
            padding: 48px 0 20px;
        }

        .layout-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .guide-col h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 8px;
            letter-spacing: 0;
            line-height: 1.3;
        }

        .guide-col .section-desc {
            color: var(--text-secondary);
            font-size: 15px;
            margin-bottom: 28px;
            max-width: 52ch;
            line-height: 1.8;
        }

        .guide-title-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }

        .guide-title-row .section-index {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--brand-main), var(--brand-deep));
            color: #0B1713;
            font-weight: 800;
            font-size: 13px;
        }

        .guide-title-row h3 {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-main);
        }

        .guide-text {
            color: #4a594c;
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .intro-card {
            background: var(--card-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 32px;
            position: relative;
            overflow: hidden;
            border-top: 4px solid var(--brand-main);
        }

        .intro-card .icon-wrap {
            display: inline-flex;
            width: 48px;
            height: 48px;
            border-radius: 16px;
            background: rgba(201,242,84,0.15);
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: #1e3a2a;
        }

        .intro-card h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .intro-card p {
            color: #4a594c;
            font-size: 14.5px;
            line-height: 1.8;
            margin-bottom: 12px;
        }

        .intro-card .highlight-line {
            padding-left: 14px;
            border-left: 3px solid var(--brand-main);
            background: rgba(201,242,84,0.06);
            padding-top: 8px;
            padding-bottom: 8px;
            border-radius: 0 12px 12px 0;
            font-size: 14px;
            color: #3a4a3e;
            line-height: 1.7;
        }

        .news-cards-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 28px;
        }

        .news-card {
            background: var(--card-white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .news-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 38px rgba(12,30,18,0.12);
        }

        .news-card .thumb-box {
            height: 150px;
            overflow: hidden;
            border-bottom: 3px solid var(--brand-main);
        }

        .news-card .thumb-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-card .news-body {
            padding: 18px 20px 20px;
        }

        .news-card h4 {
            font-size: 16px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.45;
        }

        .news-card p {
            font-size: 13.5px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .tag-light {
            background: rgba(201,242,84,0.2);
            color: #3d6820;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
        }

        /* FAQ */
        .faq-section {
            margin-top: 40px;
            padding: 40px 0 20px;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: 16px;
            border: 1px solid #E4EADF;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .2s;
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 18px 24px;
            font-weight: 700;
            font-size: 15.5px;
            cursor: pointer;
            list-style: none;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(201,242,84,0.2);
            color: #3d6820;
            font-weight: 800;
            font-size: 16px;
            flex-shrink: 0;
            transition: transform .25s ease;
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }

        .faq-item .faq-content {
            padding: 0 24px 20px 62px;
            color: #4a594c;
            font-size: 14.5px;
            line-height: 1.8;
        }

        .faq-tag {
            display: inline-block;
            font-size: 12px;
            background: #F3F5F0;
            color: #627062;
            padding: 2px 8px;
            border-radius: 999px;
            font-weight: 600;
            flex-shrink: 0;
        }

        /* CTA */
        .cta-area {
            padding: 30px 0 60px;
        }

        .cta-card {
            background: linear-gradient(135deg, #0B1713 0%, #1d3426 100%);
            border-radius: 24px;
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(201,242,84,0.08);
        }

        .cta-left h2 {
            color: #F0F5ED;
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .cta-left p {
            color: #AFC0B2;
            font-size: 15px;
            max-width: 48ch;
            line-height: 1.7;
        }

        .cta-btns {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            z-index: 2;
            position: relative;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand-main), var(--brand-deep));
            color: #0B1713;
            font-weight: 800;
            padding: 14px 30px;
            border-radius: 999px;
            font-size: 15px;
            cursor: pointer;
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(201,242,84,0.28);
            filter: brightness(1.04);
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            border: 1px solid rgba(255,255,255,0.3);
            color: #E8F0E5;
            font-weight: 600;
            padding: 13px 26px;
            border-radius: 999px;
            font-size: 14px;
            cursor: pointer;
        }

        .btn-ghost-light:hover {
            border-color: var(--brand-main);
            color: var(--brand-main);
            background: rgba(201,242,84,0.08);
        }

        .btn:focus-visible,
        .btn-primary:focus-visible,
        .btn-ghost-light:focus-visible,
        .channel-pill:focus-visible,
        .mobile-menu-btn:focus-visible {
            outline: 2px solid var(--brand-main);
            outline-offset: 2px;
        }

        /* Footer */
        .site-footer {
            background-color: #07110D;
            border-top: 3px solid rgba(201,242,84,0.4);
            padding: 48px 0 24px;
            color: #b8cab9;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .brand {
            margin-bottom: 12px;
            display: inline-flex;
        }

        .footer-brand .brand-name {
            color: #E8F0E5;
        }

        .footer-desc {
            color: #8ba38d;
            font-size: 14px;
            line-height: 1.8;
            max-width: 34ch;
        }

        .footer-title {
            color: #D8E5D8;
            font-size: 14px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: .4px;
            margin-bottom: 14px;
            padding-bottom: 8px;
            border-bottom: 1px solid rgba(201,242,84,0.15);
        }

        .footer-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-list li {
            margin-bottom: 10px;
        }

        .footer-list a {
            color: #93a896;
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-list a:hover {
            color: var(--brand-main);
        }

        .footer-note {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 18px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: #6e8473;
        }

        /* 响应式 */
        @media (max-width: 992px) {
            .layout-split {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .news-cards-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .category-hero {
                padding: 36px 0 32px;
            }
            .cta-card {
                padding: 28px 22px;
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 560px) {
            .news-cards-row {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .intro-card {
                padding: 22px;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-item .faq-content {
                padding: 0 14px 16px 48px;
                font-size: 13.5px;
            }
            .cta-left h2 {
                font-size: 20px;
            }
        }

/* roulang page: category2 */
:root {
            --brand: #C9F254;
            --brand-deep: #A6D926;
            --accent: #FF6B1A;
            --deep-bg: #0B1713;
            --deep-2: #203527;
            --bg: #F7F8F4;
            --card: #FFFFFF;
            --ink: #182014;
            --muted: #627062;
            --line: #E4EADF;
            --radius: 20px;
            --radius-lg: 28px;
            --shadow-soft: 0 12px 32px rgba(12, 30, 18, 0.08);
            --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            margin: 0;
        }

        * {
            box-sizing: border-box;
        }

        body,
        h1,
        h2,
        h3,
        p,
        ul,
        ol,
        dl,
        blockquote {
            margin: 0;
        }

        ul,
        ol {
            padding: 0;
            list-style: none;
        }

        body *,
        body *::before,
        body *::after {
            box-sizing: inherit;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        input {
            font-family: inherit;
        }

        :focus-visible {
            outline: 2px solid rgba(201, 242, 84, .9);
            outline-offset: 3px;
            border-radius: 6px;
        }

        .container-xl {
            max-width: 1280px;
            margin-inline: auto;
            padding-inline: 24px;
        }

        .container-narrow {
            max-width: 780px;
            margin-inline: auto;
            padding-inline: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(5, 22, 16, 0.96);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(201, 242, 84, 0.16);
            box-shadow: 0 8px 22px rgba(7, 20, 15, .16);
        }

        .header-main {
            display: flex;
            align-items: center;
            min-height: 72px;
            padding-block: 10px;
            gap: 28px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex: 0 0 auto;
        }

        .brand-mark {
            width: 40px;
            height: 40px;
            border-radius: 13px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 16px;
            letter-spacing: -.2px;
            color: #091411;
            background: linear-gradient(135deg, var(--brand), var(--brand-deep));
            box-shadow: 0 6px 14px rgba(201, 242, 84, .2);
        }

        .brand-name {
            color: #fff;
            font-weight: 900;
            font-size: 21px;
            line-height: 1.2;
            white-space: nowrap;
        }

        .header-search {
            margin-left: auto;
            flex: 1 1 auto;
            max-width: 290px;
            display: flex;
            align-items: center;
        }

        .header-search .search-inner {
            width: 100%;
            position: relative;
            display: flex;
            align-items: center;
        }

        .header-search input {
            width: 100%;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .18);
            color: #fff;
            border-radius: 999px;
            padding: 9px 42px 9px 16px;
            font-size: 14px;
            transition: all .25s ease;
        }

        .header-search input::placeholder {
            color: rgba(255, 255, 255, .62);
        }

        .header-search input:focus {
            outline: none;
            border-color: var(--brand);
            background: rgba(255, 255, 255, .12);
            box-shadow: 0 0 0 3px rgba(201, 242, 84, .14);
        }

        .header-search .search-submit {
            position: absolute;
            right: 5px;
            width: 34px;
            height: 34px;
            border: 0;
            border-radius: 999px;
            background: transparent;
            color: #fff;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .header-search .search-submit:hover svg {
            stroke: var(--brand);
        }

        .header-search .search-submit svg {
            transition: stroke .2s ease;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
            flex: 0 0 auto;
        }

        @media (min-width: 980px) {
            .header-actions .mobile-only-btn {
                display: none;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            border: 0;
            font-weight: 700;
            white-space: nowrap;
            cursor: pointer;
            transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease;
        }

        .btn-green {
            background: linear-gradient(115deg, var(--brand), var(--brand-deep));
            color: #101A10;
            min-height: 44px;
            padding: 0 20px;
            box-shadow: 0 8px 16px rgba(201, 242, 84, .12);
        }

        .btn-green:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 22px rgba(201, 242, 84, .22);
        }

        .btn-accent {
            background: linear-gradient(110deg, #FF7A2F, #F95517);
            color: #fff;
            min-height: 46px;
            padding: 0 22px;
            box-shadow: 0 8px 18px rgba(255, 107, 26, .22);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 26px rgba(255, 107, 26, .3);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--line);
            color: var(--ink);
            min-height: 44px;
            padding: 0 20px;
        }

        .btn-outline:hover {
            border-color: var(--brand-deep);
            color: #5B8F0D;
            transform: translateY(-2px);
        }

        .btn-dark-outline {
            border-color: rgba(255, 255, 255, .56);
            color: #fff;
        }

        .btn-dark-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
        }

        .header-channels {
            border-top: 1px solid rgba(255, 255, 255, .08);
        }

        .channels-scroll {
            display: flex;
            gap: 8px;
            padding: 10px 0 12px;
            overflow-x: auto;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
        }

        .channels-scroll::-webkit-scrollbar {
            display: none;
        }

        .channel-pill {
            display: inline-flex;
            align-items: center;
            flex: 0 0 auto;
            border-radius: 999px;
            padding: 7px 18px;
            color: rgba(255, 255, 255, .82);
            border: 1px solid transparent;
            font-size: 15px;
            font-weight: 600;
            transition: all .2s ease;
        }

        .channel-pill:hover {
            background: rgba(201, 242, 84, .14);
            color: var(--brand);
            border-color: rgba(201, 242, 84, .2);
        }

        .channel-pill.active {
            background: var(--brand);
            color: #0B1713;
            font-weight: 800;
            border-color: var(--brand);
        }

        .nav-toggle {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            border: 0;
            background: rgba(255, 255, 255, .08);
            color: #fff;
            display: none;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        .mobile-panel {
            display: none;
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
            background: rgba(255, 255, 255, .04);
            border-top: 1px solid rgba(255, 255, 255, .08);
        }

        .mobile-panel.open {
            display: block;
        }

        @media (max-width: 760px) {
            .container-xl {
                padding-inline: 16px;
            }

            .header-main {
                gap: 12px;
                min-height: 64px;
            }

            .brand-name {
                font-size: 18px;
            }

            .brand-mark {
                width: 34px;
                height: 34px;
                border-radius: 10px;
                font-size: 14px;
            }

            .header-search {
                display: none;
                flex: 0 0 auto;
                order: 10;
                width: calc(100vw - 32px);
            }

            .nav-toggle {
                display: inline-flex;
            }

            .header-actions .btn {
                display: none;
            }

            .mobile-panel .m-search-form {
                padding: 12px 16px 6px;
            }

            .mobile-panel .m-action-row {
                display: flex;
                gap: 10px;
                padding: 6px 16px 14px;
                flex-wrap: wrap;
            }

            .mobile-panel .btn {
                margin: 0;
            }
        }

        .mobile-panel .search-inner {
            position: relative;
        }

        .mobile-panel input {
            width: 100%;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
            border-radius: 999px;
            padding: 9px 42px 9px 16px;
        }

        .mobile-panel input::placeholder {
            color: rgba(255, 255, 255, .62);
        }

        .mobile-panel .search-submit {
            position: absolute;
            right: 5px;
            top: 50%;
            transform: translateY(-50%);
            width: 34px;
            height: 34px;
            border: 0;
            background: transparent;
            color: #fff;
            border-radius: 999px;
        }

        .subpage-hero {
            color: #fff;
            padding: 58px 0 52px;
            background-image: linear-gradient(115deg, rgba(5, 23, 16, .98) 0%, rgba(14, 46, 31, .94) 100%),
                url("/assets/images/backpic/back-2.webp");
            background-position: center;
            background-size: cover;
            position: relative;
            overflow: hidden;
        }

        @media (max-width:600px) {
            .subpage-hero {
                padding: 34px 0 32px;
            }
        }

        .subpage-hero::before {
            content: "";
            position: absolute;
            width: 360px;
            height: 260px;
            right: -60px;
            top: 6px;
            background: radial-gradient(circle at 30% 50%, rgba(201, 242, 84, .14) 0%, rgba(255, 255, 255, 0) 70%);
            pointer-events: none;
        }

        .breadcrumb-nav {
            margin-bottom: 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .62);
            font-size: 14px;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, .82);
        }

        .breadcrumb-nav a:hover {
            color: var(--brand);
        }

        .breadcrumb-nav span {
            color: var(--brand);
        }

        .hero-chip-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 18px;
        }

        .hero-chip {
            border-radius: 999px;
            padding: 5px 14px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            color: rgba(255, 255, 255, .9);
            font-size: 13px;
            backdrop-filter: blur(4px);
        }

        .hero-chip.soft {
            background: rgba(201, 242, 84, .1);
            border-color: rgba(201, 242, 84, .24);
            color: var(--brand);
        }

        .doc-split {
            display: grid;
            grid-template-columns: 260px minmax(0, 1fr);
            gap: 50px;
            padding-block: 56px 72px;
            align-items: start;
        }

        @media (max-width: 980px) {
            .doc-split {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-block: 32px 56px;
            }
        }

        .doc-side {
            padding-top: 8px;
        }

        .side-sticky {
            position: sticky;
            top: 126px;
            padding: 18px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow-soft);
        }

        .doc-side .side-label {
            font-size: 13px;
            color: var(--muted);
            letter-spacing: .04em;
            padding-left: 13px;
            margin-bottom: 12px;
        }

        .doc-nav {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .doc-nav a {
            display: block;
            padding: 8px 12px;
            border-left: 3px solid var(--line);
            font-size: 15px;
            color: var(--muted);
            line-height: 1.5;
            transition: all .2s ease;
        }

        .doc-nav a:hover {
            border-color: var(--brand-deep);
            color: var(--ink);
            background: rgba(201, 242, 84, .08);
        }

        .doc-nav a.active {
            border-left-color: var(--brand-deep);
            color: #142010;
            font-weight: 700;
            background: rgba(201, 242, 84, .12);
        }

        @media (max-width: 980px) {
            .side-sticky {
                position: static;
                top: 0;
            }

            .doc-nav {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 6px;
            }

            .doc-nav a {
                border-left: 0;
                border-radius: 999px;
                border: 1px solid var(--line);
                padding: 6px 12px;
                font-size: 14px;
            }

            .doc-nav a.active {
                background: var(--brand);
                border-color: var(--brand);
            }

            .doc-side .side-label {
                padding-left: 0;
            }
        }

        .side-lite {
            margin-top: 14px;
            padding: 16px 13px;
            background: linear-gradient(135deg, rgba(201, 242, 84, .1), rgba(255, 255, 255, .8));
            border: 1px solid var(--line);
            border-radius: 16px;
            font-size: 14px;
            color: #2A382D;
            line-height: 1.65;
        }

        .side-lite strong {
            display: block;
            margin-bottom: 4px;
            font-size: 15px;
        }

        .content-section {
            margin-bottom: 60px;
        }

        @media (max-width:980px) {
            .content-section {
                margin-bottom: 40px;
            }
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #567B0C;
            font-weight: 800;
            font-size: 13px;
            letter-spacing: .06em;
            padding-left: 16px;
            position: relative;
            margin-bottom: 8px;
        }

        .section-tag::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 6px;
            border-radius: 2px;
            background: var(--brand-deep);
        }

        .section-title {
            font-size: clamp(26px, 3vw, 36px);
            line-height: 1.3;
            letter-spacing: -.02em;
            font-weight: 900;
            color: #101510;
        }

        .section-subtitle {
            margin-top: 12px;
            color: #55655A;
            font-size: 16px;
            max-width: 710px;
        }

        .panel-card {
            background: var(--card);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
        }

        .intro-split {
            display: grid;
            grid-template-columns: minmax(0, 1.35fr) minmax(0, .85fr);
            gap: 24px;
            margin-top: 28px;
        }

        @media (max-width: 800px) {
            .intro-split {
                grid-template-columns: 1fr;
            }
        }

        .intro-copy {
            padding: 30px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-soft);
        }

        .intro-copy>p {
            color: #435145;
            font-size: 16px;
            margin-bottom: 14px;
        }

        .intro-copy>p:last-child {
            margin-bottom: 0;
        }

        .feature-check {
            display: flex;
            gap: 10px;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px dashed var(--line);
        }

        .feature-check .mark {
            color: #79A50B;
            font-weight: 900;
        }

        .feature-check p {
            color: #435145;
            font-size: 15px;
        }

        .visual-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--line);
            position: relative;
            box-shadow: var(--shadow-soft);
            background: #203527;
            min-height: 220px;
        }

        .visual-cover img {
            width: 100%;
            height: 100%;
            min-height: 220px;
            object-fit: cover;
        }

        .data-fields {
            margin-top: 26px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
        }

        @media (max-width: 700px) {
            .data-fields {
                grid-template-columns: 1fr;
            }
        }

        .data-field {
            padding: 22px;
            border-right: 1px solid var(--line);
            border-top: 3px solid var(--brand);
        }

        .data-field:nth-child(2),
        .data-field:nth-child(3) {
            border-top-color: transparent;
        }

        @media (min-width: 701px) {
            .data-field:nth-child(2) {
                border-top-color: var(--brand);
            }
        }

        .data-field:last-child {
            border-right: 0;
        }

        .data-field h3 {
            font-size: 17px;
            margin-bottom: 8px;
        }

        .data-field p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        @media (max-width: 700px) {
            .data-field {
                border-right: 0;
                border-bottom: 1px solid var(--line);
                border-top: 0;
            }
        }

        .status-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            margin-top: 24px;
        }

        @media (max-width: 680px) {
            .status-grid {
                grid-template-columns: 1fr;
            }
        }

        .status-block {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 24px;
            position: relative;
            transition: box-shadow .2s ease;
        }

        .status-block:hover {
            box-shadow: var(--shadow-soft);
        }

        .status-block .dot {
            width: 10px;
            height: 10px;
            background: var(--brand-deep);
            display: inline-block;
            border-radius: 999px;
            margin-right: 8px;
        }

        .status-block h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .status-block p {
            font-size: 15px;
            color: #55655A;
        }

        .status-tag {
            display: inline-block;
            margin-top: 14px;
            border-radius: 999px;
            padding: 4px 12px;
            background: rgba(201, 242, 84, .18);
            color: #466E00;
            font-size: 13px;
            font-weight: 700;
        }

        .notice-panel {
            margin-top: 22px;
            padding: 16px 18px;
            background: #fff8F2;
            border: 1px solid #FFE0CC;
            border-radius: 16px;
            color: #783C17;
            font-size: 14px;
        }

        .row-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            margin-top: 24px;
        }

        @media (max-width: 680px) {
            .row-split {
                grid-template-columns: 1fr;
            }
        }

        .stat-list {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 24px;
        }

        .stat-list h3 {
            font-size: 18px;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--line);
        }

        .stat-list ul {
            display: grid;
            gap: 10px;
        }

        .stat-list li {
            display: flex;
            align-items: center;
            gap: 9px;
            color: #425044;
            font-size: 15px;
        }

        .stat-list li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 2px;
            background: var(--brand-deep);
        }

        .panel-head {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding: 22px 26px 0;
        }

        .panel-head h3 {
            font-size: 19px;
            font-weight: 800;
        }

        .table-wrap {
            overflow-x: auto;
            margin-top: 14px;
        }

        .data-table {
            width: 100%;
            min-width: 620px;
            border-collapse: collapse;
            font-size: 15px;
        }

        .data-table th {
            background: #F0F5ED;
            padding: 12px 20px;
            text-align: left;
            border-bottom: 1px solid var(--line);
            color: #2C3A2E;
            font-weight: 700;
        }

        .data-table td {
            padding: 13px 20px;
            border-bottom: 1px solid var(--line);
            color: #314137;
        }

        .data-table tr:last-child td {
            border-bottom: 0;
        }

        .data-table tr:hover td {
            background: rgba(201, 242, 84, .06);
        }

        .score-cell {
            color: #4D7C00;
            font-weight: 800;
        }

        .faq-section {
            margin-bottom: 60px;
        }

        .faq-list {
            margin-top: 28px;
            display: grid;
            gap: 12px;
            max-width: 800px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            overflow: hidden;
            transition: border-color .2s, box-shadow .2s;
        }

        .faq-item[open] {
            border-color: rgba(166, 217, 38, .5);
            box-shadow: var(--shadow-soft);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            list-style: none;
        }

        .faq-q::-webkit-details-marker {
            display: none;
        }

        .faq-q .faq-text {
            font-size: 16px;
            font-weight: 700;
            color: #181F18;
        }

        .plus {
            position: relative;
            width: 24px;
            height: 24px;
            flex: 0 0 auto;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1.5px solid #A9B7AD;
            border-radius: 999px;
            transition: transform .25s ease, border-color .25s;
        }

        .plus::before,
        .plus::after {
            content: "";
            position: absolute;
            background: #5F725F;
            border-radius: 2px;
            width: 10px;
            height: 2px;
            transition: transform .25s ease, background .25s;
        }

        .plus::after {
            transform: rotate(90deg);
        }

        .faq-item[open] .plus {
            transform: rotate(45deg);
            border-color: var(--brand-deep);
        }

        .faq-item[open] .plus::before,
        .faq-item[open] .plus::after {
            background: #74A700;
        }

        .faq-a {
            padding: 0 22px 20px;
            color: #506052;
            font-size: 15px;
            border-top: 1px solid var(--line);
            padding-top: 15px;
        }

        .download-cta {
            border-radius: 28px;
            margin-bottom: 70px;
            padding: 40px;
            background:
                radial-gradient(circle at 82% 20%, rgba(201, 242, 84, .16), transparent 42%),
                linear-gradient(120deg, #0B1713, #203527);
            color: #fff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 28px;
            position: relative;
            overflow: hidden;
        }

        .download-cta::after {
            content: "";
            position: absolute;
            left: -40px;
            bottom: -60px;
            width: 220px;
            height: 160px;
            border: 1px solid rgba(201, 242, 84, .12);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-copy h2 {
            font-size: clamp(24px, 3vw, 33px);
            line-height: 1.35;
        }

        .cta-copy p {
            margin-top: 10px;
            color: rgba(255, 255, 255, .76);
            max-width: 530px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .site-footer {
            background: #08130E;
            color: rgba(255, 255, 255, .72);
            padding-top: 56px;
            border-top: 1px solid rgba(255, 255, 255, .08);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr .8fr .8fr .8fr;
            gap: 36px;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        .footer-brand .brand-name {
            color: #fff;
            font-size: 18px;
        }

        .footer-desc {
            color: rgba(255, 255, 255, .58);
            font-size: 14px;
            max-width: 380px;
            margin-top: 14px;
            line-height: 1.8;
        }

        .footer-title {
            color: #fff;
            font-weight: 700;
            margin-bottom: 14px;
            font-size: 15px;
        }

        .footer-list {
            display: grid;
            gap: 9px;
        }

        .footer-list a {
            color: rgba(255, 255, 255, .68);
            font-size: 14px;
            transition: color .18s;
        }

        .footer-list a:hover {
            color: var(--brand);
        }

        .footer-note {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 18px 0;
            margin-top: 42px;
            display: flex;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, .4);
            font-size: 13px;
        }

        @media (max-width: 640px) {
            .footer-note {
                flex-direction: column;
            }
        }

/* roulang page: category3 */
:root {
        --signal: #C9F254;
        --signal-deep: #A6D926;
        --signal-ink: #182014;
        --accent: #FF6B1A;
        --accent-hover: #E4550F;
        --deep: #0B1713;
        --deep-2: #203527;
        --page: #F7F8F4;
        --card: #FFFFFF;
        --line: #E4EADF;
        --text: #182014;
        --muted: #627062;
        --shadow-card: 0 16px 40px rgba(12, 28, 18, 0.07);
        --shadow-float: 0 18px 44px rgba(12, 28, 18, 0.12);
        --radius-card: 22px;
        --radius-hero: 28px;
        --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    }

    *,
    *::before,
    *::after {
        box-sizing: border-box;
    }

    body {
        margin: 0;
        font-family: var(--font);
        background: var(--page);
        color: var(--text);
        font-size: 16px;
        line-height: 1.75;
    }

    body.guide-page {
        background: linear-gradient(to bottom, var(--deep) 0, var(--deep) 380px, var(--page) 380px, var(--page) 100%);
    }

    img {
        max-width: 100%;
        display: block;
    }

    a {
        color: inherit;
        text-decoration: none;
    }

    a:hover {
        color: var(--signal-deep);
    }

    ul,
    ol {
        padding: 0;
        margin: 0;
    }

    li {
        list-style: none;
    }

    .container-xl {
        max-width: 1240px;
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
    }

    .container-narrow {
        max-width: 1080px;
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
    }

    .site-header {
        position: sticky;
        top: 0;
        z-index: 50;
        background: rgba(11, 23, 19, .94);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .header-main-row {
        display: flex;
        align-items: center;
        gap: 18px;
        min-height: 66px;
        padding: 10px 0;
    }

    .brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        color: #fff;
        white-space: nowrap;
    }

    .brand-mark {
        width: 38px;
        height: 38px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 1.6px solid var(--signal);
        border-radius: 12px 12px 12px 2px;
        color: var(--signal);
        font-weight: 800;
        font-size: 14px;
        background: rgba(201, 242, 84, .08);
        letter-spacing: -0.3px;
        flex-shrink: 0;
    }

    .brand-name {
        font-size: 20px;
        font-weight: 800;
        letter-spacing: -0.2px;
        color: #fff;
    }

    .head-search {
        flex: 0 1 260px;
        margin-left: auto;
        display: none;
        align-items: center;
        gap: 8px;
        background: rgba(255, 255, 255, .08);
        border: 1px solid rgba(255, 255, 255, .16);
        border-radius: 999px;
        padding: 0 12px;
        height: 40px;
        transition: border 0.25s, background 0.25s;
    }

    .head-search:hover,
    .head-search:focus-within {
        border-color: var(--signal);
        background: rgba(255, 255, 255, .11);
    }

    .head-search input {
        width: 100%;
        background: transparent;
        border: 0;
        outline: none;
        color: #fff;
        font-size: 14px;
        padding: 0;
    }

    .head-search input::placeholder {
        color: rgba(255, 255, 255, .5);
    }

    .head-search svg {
        width: 16px;
        height: 16px;
        stroke: #9db3a6;
        flex-shrink: 0;
    }

    .header-channels {
        border-top: 1px solid rgba(255, 255, 255, .07);
        padding: 10px 0;
    }

    .channels-scroll {
        display: flex;
        align-items: center;
        gap: 8px;
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 2px;
    }

    .channels-scroll::-webkit-scrollbar {
        display: none;
    }

    .channel-pill {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 38px;
        padding: 0 18px;
        border-radius: 999px;
        color: rgba(255, 255, 255, .8);
        font-size: 15px;
        font-weight: 600;
        white-space: nowrap;
        border: 1px solid transparent;
        transition: background .25s, color .25s, transform .2s;
        flex-shrink: 0;
    }

    .channel-pill:hover {
        color: var(--signal);
        background: rgba(201, 242, 84, .12);
    }

    .channel-pill.active {
        background: var(--signal);
        color: var(--deep);
        font-weight: 700;
    }

    .head-cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 42px;
        padding: 0 20px;
        border-radius: 999px;
        font-weight: 700;
        font-size: 15px;
        white-space: nowrap;
        margin-left: auto;
        flex-shrink: 0;
    }

    .head-cta-primary {
        background: linear-gradient(135deg, var(--signal), var(--signal-deep));
        color: var(--deep);
    }

    .head-cta-primary:hover {
        box-shadow: 0 8px 18px rgba(201, 242, 84, .3);
        transform: translateY(-1px);
        color: var(--deep);
    }

    .head-cta-accent {
        background: linear-gradient(135deg, var(--accent), var(--accent-hover));
        color: #fff;
        box-shadow: 0 10px 20px rgba(255, 110, 30, .16);
    }

    .head-cta-accent:hover {
        transform: translateY(-2px);
        box-shadow: 0 14px 28px rgba(255, 110, 30, .25);
        color: #fff;
    }

    @media (min-width: 1024px) {
        .head-search {
            display: flex;
        }
    }

    .page-hero {
        position: relative;
        background:
            linear-gradient(rgba(11, 23, 19, .88), rgba(14, 32, 23, .96)),
            url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        padding: 64px 0 56px;
    }

    .page-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        pointer-events: none;
        background-image:
            linear-gradient(rgba(201, 242, 84, .08) 1px, transparent 1px),
            linear-gradient(90deg, rgba(201, 242, 84, .06) 1px, transparent 1px);
        background-size: 46px 46px;
        mask-image: radial-gradient(circle at 18% 25%, black, transparent 70%);
    }

    .hero-label {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        height: 34px;
        padding: 0 14px;
        border: 1px solid rgba(201, 242, 84, .5);
        color: var(--signal);
        border-radius: 999px;
        font-size: 13px;
        font-weight: 700;
        background: rgba(201, 242, 84, .1);
        margin-bottom: 18px;
    }

    .page-hero h1 {
        margin: 0 0 14px;
        font-size: clamp(32px, 5vw, 52px);
        font-weight: 900;
        letter-spacing: -1px;
        color: #fff;
        line-height: 1.2;
    }

    .page-hero p {
        max-width: 620px;
        color: rgba(255, 255, 255, .78);
        font-size: 17px;
        line-height: 1.9;
        margin: 0;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        margin-top: 30px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 50px;
        padding: 0 26px;
        border-radius: 999px;
        font-weight: 700;
        font-size: 16px;
        cursor: pointer;
        transition: transform .25s, box-shadow .25s, background .25s, border-color .25s, color .25s;
        white-space: nowrap;
    }

    .btn:hover {
        transform: translateY(-2px);
    }

    .btn:focus-visible {
        outline: 3px solid rgba(201, 242, 84, .7);
        outline-offset: 3px;
    }

    .btn-accent {
        background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
        color: #fff;
        box-shadow: 0 12px 30px rgba(255, 107, 26, .28);
    }

    .btn-accent:hover {
        box-shadow: 0 16px 34px rgba(255, 107, 26, .34);
    }

    .btn-outline-light {
        background: transparent;
        border: 1px solid rgba(255, 255, 255, .32);
        color: #fff;
    }

    .btn-outline-light:hover {
        border-color: var(--signal);
        color: var(--signal);
    }

    .hero-badges {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
        margin-top: 34px;
    }

    .data-badge {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        height: 36px;
        padding: 0 14px;
        border-radius: 999px;
        background: rgba(11, 23, 19, .78);
        border: 1px solid rgba(201, 242, 84, .22);
        color: var(--signal);
        font-size: 14px;
        font-weight: 600;
    }

    .data-badge small {
        font-weight: 500;
        color: rgba(255, 255, 255, .65);
        font-size: 13px;
    }

    .crumb-row {
        background: #fff;
        border-bottom: 1px solid var(--line);
        padding: 12px 0;
    }

    .crumb-list {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 4px;
        color: var(--muted);
        font-size: 14px;
    }

    .crumb-list a:hover {
        color: var(--signal-deep);
    }

    .crumb-sep {
        margin: 0 4px;
        color: #c2cdc1;
    }

    .crumb-current {
        color: var(--text);
        font-weight: 600;
        max-width: 320px;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
    }

    .section-gap {
        padding: 56px 0;
    }

    @media (max-width: 768px) {
        .section-gap {
            padding: 40px 0;
        }
    }

    .guide-layout {
        display: grid;
        grid-template-columns: minmax(0, 1.7fr) minmax(300px, .9fr);
        gap: 28px;
        align-items: start;
    }

    @media (max-width: 1024px) {
        .guide-layout {
            grid-template-columns: 1fr;
        }
    }

    .guide-main {
        min-width: 0;
    }

    .guide-aside {
        position: sticky;
        top: 150px;
    }

    @media (max-width: 1024px) {
        .guide-aside {
            position: static;
        }
    }

    .eyebrow {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--signal-deep);
        font-size: 13px;
        font-weight: 700;
        letter-spacing: .4px;
        text-transform: uppercase;
        margin-bottom: 10px;
    }

    .eyebrow::before {
        content: "";
        width: 20px;
        height: 2px;
        background: var(--signal);
        border-radius: 4px;
    }

    .section-heading {
        font-size: clamp(24px, 3vw, 32px);
        font-weight: 800;
        line-height: 1.3;
        letter-spacing: -.4px;
        color: var(--text);
        margin: 0 0 10px;
    }

    .section-desc {
        color: var(--muted);
        max-width: 65ch;
        line-height: 1.85;
    }

    .block-card {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 30px;
        margin: 20px 0 0;
    }

    @media (max-width: 640px) {
        .block-card {
            padding: 22px;
        }
    }

    .prep-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        margin-top: 24px;
    }

    .prep-cell {
        padding: 8px 0;
        border-top: 3px solid var(--signal);
        border-radius: 18px;
        background: #fbfdf9;
        border: 1px solid var(--line);
        border-top: 4px solid var(--signal);
        padding: 22px 20px;
        box-shadow: 0 8px 20px rgba(20, 40, 28, .05);
    }

    @media (max-width: 640px) {
        .prep-grid {
            grid-template-columns: 1fr;
        }
    }

    .prep-cell ul {
        margin-top: 12px;
        display: grid;
        gap: 8px;
    }

    .prep-cell li {
        position: relative;
        padding-left: 20px;
        color: #46504a;
        font-size: 15px;
    }

    .prep-cell li::before {
        content: "";
        position: absolute;
        left: 0;
        top: 0.72em;
        width: 7px;
        height: 7px;
        border-radius: 2px;
        background: var(--signal);
        transform: rotate(45deg);
    }

    .split-cards {
        display: grid;
        grid-template-columns: 1.2fr .8fr;
        gap: 24px;
        margin-top: 26px;
    }

    @media (max-width: 900px) {
        .split-cards {
            grid-template-columns: 1fr;
        }
    }

    .mini-panel {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 20px;
        box-shadow: var(--shadow-card);
        overflow: hidden;
    }

    .mini-panel .panel-body {
        padding: 26px;
    }

    .mini-panel .panel-body h3 {
        margin: 0 0 14px;
        font-size: 19px;
        font-weight: 800;
        line-height: 1.4;
    }

    .mini-panel dl {
        display: grid;
        gap: 12px;
        margin: 0;
    }

    .mini-panel dt {
        color: var(--muted);
        font-size: 13px;
    }

    .mini-panel dd {
        margin: 2px 0 0;
        font-weight: 600;
        font-size: 15px;
        color: var(--text);
    }

    .panel-media {
        height: 180px;
        background: linear-gradient(rgba(11, 23, 19, .30), rgba(11, 23, 19, .30)), url('/assets/images/coverpic/cover-6.webp') center/cover;
    }

    .devices-panel {
        background:
            radial-gradient(circle at 90% 20%, rgba(201, 242, 84, .16), transparent 30%),
            linear-gradient(135deg, var(--deep), var(--deep-2));
        border-radius: 26px;
        color: #fff;
        display: grid;
        grid-template-columns: 1.2fr .8fr;
        align-items: center;
        gap: 30px;
        padding: 28px 30px;
        margin-top: 26px;
    }

    @media (max-width: 720px) {
        .devices-panel {
            grid-template-columns: 1fr;
        }
    }

    .devices-panel h3 {
        font-size: 22px;
        margin: 0 0 8px;
        color: #fff;
    }

    .devices-panel p {
        color: rgba(255, 255, 255, .72);
        font-size: 15px;
        margin: 0;
        max-width: 60ch;
    }

    .devices-list {
        display: grid;
        gap: 8px;
        margin-top: 16px;
    }

    .device-item {
        display: flex;
        align-items: center;
        gap: 10px;
        color: rgba(255, 255, 255, .9);
        font-size: 15px;
    }

    .device-dot {
        width: 9px;
        height: 9px;
        border-radius: 3px;
        background: var(--signal);
        box-shadow: 0 0 10px rgba(201, 242, 84, .5);
    }

    .bside-card {
        border: 1px solid var(--line);
        background: #fff;
        border-radius: 22px;
        box-shadow: var(--shadow-card);
        padding: 26px;
        margin-bottom: 22px;
    }

    .bside-title {
        font-size: 19px;
        font-weight: 800;
        color: var(--text);
        margin: 0 0 16px;
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .bside-title::before {
        content: "";
        width: 5px;
        height: 18px;
        border-radius: 6px;
        background: linear-gradient(180deg, var(--signal), var(--signal-deep));
    }

    .aside-nav-item {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        padding: 13px 0;
        border-bottom: 1px solid var(--line);
        color: var(--text);
        font-size: 15px;
        font-weight: 600;
        transition: color .2s, transform .2s;
        cursor: pointer;
    }

    .aside-nav-item:last-child {
        border-bottom: 0;
    }

    .aside-nav-item .nav-index {
        color: var(--signal-deep);
        font-size: 12px;
        font-weight: 800;
        margin-top: 2px;
    }

    .aside-nav-item:hover {
        color: var(--signal-deep);
        transform: translateX(3px);
    }

    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }

    .tag-item {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        height: 32px;
        padding: 0 14px;
        border-radius: 999px;
        background: rgba(201, 242, 84, .14);
        color: #364f1f;
        font-size: 13px;
        font-weight: 600;
        border: 1px solid rgba(166, 217, 38, .18);
        transition: all .25s;
    }

    .tag-item:hover {
        background: var(--signal);
        color: var(--deep);
        border-color: var(--signal-deep);
    }

    .aside-cover-link {
        display: block;
        border-radius: 18px;
        overflow: hidden;
        background: var(--deep);
        color: #fff;
        position: relative;
        margin-bottom: 18px;
    }

    .aside-cover-link img {
        opacity: .7;
        transition: opacity .3s, transform .4s;
    }

    .aside-cover-link:hover img {
        opacity: .85;
        transform: scale(1.02);
    }

    .aside-cover-caption {
        position: absolute;
        right: 12px;
        left: 12px;
        bottom: 12px;
        background: rgba(11, 23, 19, .58);
        backdrop-filter: blur(6px);
        color: #f4ffe2;
        font-size: 14px;
        font-weight: 600;
        border-radius: 12px;
        padding: 8px 12px;
        line-height: 1.4;
    }

    .trouble-list {
        margin-top: 20px;
    }

    .trouble-list li {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px 18px;
        padding: 18px 0;
        border-bottom: 1px solid var(--line);
        font-size: 15px;
    }

    .trouble-list li:last-child {
        border-bottom: 0;
    }

    .trouble-label {
        font-weight: 700;
        color: var(--text);
    }

    .trouble-desc {
        color: var(--muted);
        line-height: 1.7;
    }

    @media (max-width: 700px) {
        .trouble-list li {
            grid-template-columns: 1fr;
        }
    }

    .faq-wrap {
        max-width: 1000px;
        margin: 0 auto;
    }

    .faq-item {
        background: #fff;
        border: 1px solid var(--line);
        border-radius: 18px;
        box-shadow: 0 8px 20px rgba(25, 38, 30, .04);
        margin-bottom: 14px;
        overflow: hidden;
        transition: border .25s, box-shadow .25s;
    }

    .faq-item:hover {
        border-color: rgba(166, 217, 38, .4);
        box-shadow: 0 12px 24px rgba(25, 38, 30, .07);
    }

    .faq-item summary {
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 20px 22px;
        font-weight: 700;
        color: var(--text);
        font-size: 16px;
        list-style: none;
        cursor: pointer;
        user-select: none;
    }

    .faq-item summary::-webkit-details-marker {
        display: none;
    }

    .faq-item[open] summary {
        color: var(--signal-deep);
    }

    .faq-item .faq-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
        margin-left: auto;
        border-radius: 8px;
        background: rgba(201, 242, 84, .14);
        color: var(--signal-deep);
        flex-shrink: 0;
        transition: transform .3s;
    }

    .faq-item[open] .faq-icon {
        transform: rotate(45deg);
    }

    .faq-answer {
        padding: 0 24px 24px;
        color: var(--muted);
        line-height: 1.8;
        border-top: 1px dashed var(--line);
        margin-top: -4px;
        padding-top: 18px;
        font-size: 15.5px;
    }

    .guide-cta {
        background: linear-gradient(120deg, var(--deep), var(--deep-2)), url('/assets/images/backpic/back-3.webp') right center/contain no-repeat;
        border-radius: 30px;
        padding: 44px 40px;
        color: #fff;
        position: relative;
        overflow: hidden;
    }

    .guide-cta::before {
        content: "";
        position: absolute;
        right: -80px;
        top: -80px;
        width: 280px;
        height: 280px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(201, 242, 84, .22), transparent 70%);
        pointer-events: none;
    }

    .guide-cta h3 {
        font-size: clamp(23px, 3vw, 30px);
        margin: 0 0 10px;
        color: #fff;
    }

    .guide-cta p {
        color: rgba(255, 255, 255, .72);
        max-width: 620px;
        margin: 0 0 24px;
    }

    .guide-cta .btn {
        position: relative;
        z-index: 2;
    }

    .site-footer {
        background: #08110E;
        color: rgba(255, 255, 255, .72);
        padding: 56px 0 22px;
        font-size: 14.5px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1fr;
        gap: 32px;
        padding-bottom: 30px;
    }

    @media (max-width: 900px) {
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
    }

    @media (max-width: 540px) {
        .footer-grid {
            grid-template-columns: 1fr;
        }
    }

    .footer-brand .brand {
        padding-left: 0;
    }

    .footer-desc {
        margin: 18px 0 0;
        line-height: 1.8;
        color: rgba(255, 255, 255, .58);
        max-width: 34ch;
        font-size: 14.5px;
    }

    .footer-title {
        color: #fff;
        font-size: 16px;
        font-weight: 700;
        margin: 0 0 14px;
    }

    .footer-list {
        display: grid;
        gap: 10px;
    }

    .footer-list a {
        color: rgba(255, 255, 255, .68);
        transition: color .2s;
    }

    .footer-list a:hover {
        color: var(--signal);
    }

    .footer-note {
        display: flex;
        flex-wrap: wrap;
        gap: 12px 22px;
        justify-content: space-between;
        padding-top: 22px;
        border-top: 1px solid rgba(255, 255, 255, .08);
        color: rgba(255, 255, 255, .4);
        font-size: 13px;
    }

    .text-muted2 {
        color: rgba(255, 255, 255, .55);
    }

    .footer-link-light {
        color: rgba(255, 255, 255, .75);
    }

    .footer-link-light:hover {
        color: var(--signal);
    }

/* roulang page: category4 */
:root {
            --primary: #C9F254;
            --primary-2: #A6D926;
            --accent: #FF6B1A;
            --accent-dark: #ED4E0A;
            --bg: #F7F8F4;
            --deep-bg1: #0B1713;
            --deep-bg2: #203527;
            --card: #FFFFFF;
            --text: #182014;
            --muted: #627062;
            --line: #E4EADF;
            --radius: 20px;
            --radius-lg: 28px;
            --radius-xl: 32px;
            --shadow-card: 0 12px 32px rgba(12, 30, 18, 0.08);
            --shadow-hover: 0 16px 38px rgba(12, 30, 18, 0.13);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            -webkit-text-size-adjust: 100%;
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--text);
            font-family: var(--font);
            font-size: 15.5px;
            line-height: 1.8;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input {
            font-family: inherit;
        }

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .container-xl {
            max-width: 1220px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 70;
            background: rgba(11, 23, 19, 0.96);
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            backdrop-filter: blur(8px);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(11, 23, 19, 0.985);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.22);
        }

        .header-top {
            max-width: 1220px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 12px 20px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            flex-shrink: 0;
            border-radius: 10px;
        }

        .brand:focus-visible,
        .channel-pill:focus-visible,
        .download-btn:focus-visible,
        .btn:focus-visible,
        .faq-panel summary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            background: linear-gradient(145deg, var(--primary), var(--primary-2));
            color: var(--deep-bg1);
            font-weight: 900;
            font-size: 15px;
            border-radius: 11px;
            display: grid;
            place-items: center;
            letter-spacing: -0.4px;
            box-shadow: 0 4px 14px rgba(201, 242, 84, 0.22);
        }

        .brand-name {
            color: #ffffff;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.2px;
            margin-left: 10px;
            white-space: nowrap;
        }

        .header-search {
            position: relative;
            display: none;
            flex: 1;
            min-width: 0;
            max-width: 300px;
            margin-left: auto;
        }

        .search-input {
            width: 100%;
            height: 40px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.16);
            background: rgba(255, 255, 255, 0.08);
            padding: 0 15px 0 40px;
            font-size: 13.5px;
            color: #ffffff;
            transition: border 0.2s ease, background 0.2s ease;
        }

        .search-input::placeholder {
            color: #9DB0A2;
            opacity: 1;
        }

        .search-input:focus {
            outline: none;
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.12);
        }

        .search-icon {
            position: absolute;
            left: 13px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary);
            pointer-events: none;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
            flex-shrink: 0;
        }

        .header-search+.header-actions {
            margin-left: 0;
        }

        .download-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: var(--deep-bg1);
            border-radius: 999px;
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0.4px;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .download-link:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 22px rgba(201, 242, 84, 0.2);
        }

        .header-burger {
            display: inline-flex;
            flex-direction: column;
            justify-content: center;
            gap: 4px;
            width: 38px;
            height: 38px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 10px;
            background: transparent;
            padding: 8px 9px;
            cursor: pointer;
        }

        .header-burger span {
            width: 18px;
            height: 2px;
            background: #ffffff;
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .header-burger.active span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .header-burger.active span:nth-child(2) {
            opacity: 0;
        }

        .header-burger.active span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .mobile-search-panel {
            display: none;
            padding: 0 20px 12px;
        }

        .mobile-search-panel.show {
            display: block;
        }

        .mobile-search-panel .search-input {
            display: block;
            background: rgba(255, 255, 255, 0.08);
        }

        .header-channels {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 8px 0;
        }

        .channels-scroll {
            display: flex;
            gap: 8px;
            overflow-x: auto;
            padding: 2px 20px 4px;
            scrollbar-width: none;
            -webkit-overflow-scrolling: touch;
        }

        .channels-scroll::-webkit-scrollbar {
            display: none;
        }

        .channel-pill {
            flex-shrink: 0;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            padding: 6px 15px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.07);
            color: #D9E5DB;
            font-size: 13.5px;
            font-weight: 600;
            transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
        }

        .channel-pill:hover {
            background: rgba(201, 242, 84, 0.18);
            color: #F2FCDA;
        }

        .channel-pill.active {
            background: var(--primary);
            color: #0B1713;
            font-weight: 800;
        }

        .category-hero {
            position: relative;
            background-image: radial-gradient(circle at 82% 18%, rgba(201, 242, 84, 0.18), transparent 36%), linear-gradient(115deg, rgba(11, 23, 19, 0.97) 0%, rgba(22, 41, 31, 0.88) 60%, rgba(32, 53, 39, 0.72) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-color: #0B1713;
            color: #ffffff;
            padding: 70px 0 72px;
            border-bottom: 4px solid rgba(201, 242, 84, 0.38);
        }

        .category-hero .content {
            max-width: 860px;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            border: 1px solid rgba(201, 242, 84, 0.45);
            border-radius: 999px;
            padding: 4px 14px;
            background: rgba(201, 242, 84, 0.08);
        }

        .category-hero h1 {
            margin: 20px 0 18px;
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            line-height: 1.16;
            font-weight: 900;
            color: #ffffff;
            letter-spacing: 0.2px;
        }

        .hero-lede {
            font-size: 16.5px;
            line-height: 1.9;
            max-width: 640px;
            color: #CFDECF;
            margin: 0;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 30px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 26px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 800;
            cursor: pointer;
            border: 1px solid transparent;
            transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #0B1713;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(201, 242, 84, 0.2);
        }

        .btn-accent {
            background: linear-gradient(135deg, #FF7A2B, var(--accent-dark));
            color: #ffffff;
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 26px rgba(255, 107, 26, 0.28);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.55);
            color: #ffffff;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .hero-chips {
            margin-top: 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .chip-dark {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 999px;
            padding: 7px 16px;
            font-size: 13px;
            color: #E9F1E9;
        }

        .chip-dark b {
            color: var(--primary);
            font-weight: 800;
        }

        .page-section {
            padding: 72px 0;
        }

        .section-heading {
            max-width: 760px;
            margin: 0 auto 40px;
            text-align: center;
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #5A7A00;
            font-weight: 800;
            font-size: 13px;
            letter-spacing: 0.4px;
        }

        .section-heading h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            line-height: 1.3;
            font-weight: 900;
            color: var(--text);
            margin: 10px 0 14px;
        }

        .section-heading p {
            color: var(--muted);
            font-size: 15px;
            line-height: 1.8;
            margin: 0;
        }

        /* timeline */
        .version-timeline {
            position: relative;
            max-width: 920px;
            margin: 0 auto;
            padding: 8px 0 0;
        }

        .version-item {
            position: relative;
            display: grid;
            grid-template-columns: 105px 28px 1fr;
            gap: 18px;
            margin-bottom: 40px;
        }

        .version-timeline::before {
            content: "";
            position: absolute;
            left: 128px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: linear-gradient(to bottom, rgba(201, 242, 84, 0.85), #DCE7D8 40%);
        }

        .vi-date {
            text-align: right;
            color: var(--muted);
            font-weight: bold;
            font-size: 14px;
            padding-top: 16px;
            letter-spacing: 0.3px;
        }

        .vi-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #E8F4D0;
            box-shadow: 0 0 0 4px rgba(201, 242, 84, 0.26);
            margin: 18px auto 0;
        }

        .vi-card {
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 26px 26px 24px;
            border-top: 4px solid var(--primary);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .vi-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .vi-head {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 10px;
        }

        .ver-badge {
            background: rgba(201, 242, 84, 0.3);
            color: #466800;
            font-weight: 900;
            font-size: 14px;
            padding: 3px 12px;
            border-radius: 999px;
        }

        .vi-card h3 {
            font-size: 19px;
            font-weight: 800;
            color: var(--text);
            margin: 0;
        }

        .vi-card p {
            color: var(--muted);
            margin: 8px 0 14px;
            line-height: 1.8;
            font-size: 14.8px;
        }

        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tiny-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 11px;
            border-radius: 999px;
            background: #F1F7EC;
            color: #5A6B50;
            font-size: 12.5px;
            font-weight: 600;
            border: 1px solid #E2EBDE;
        }

        .tiny-tag.hot {
            background: rgba(255, 107, 26, 0.09);
            border-color: rgba(255, 107, 26, 0.2);
            color: #C24300;
            font-weight: 700;
        }

        /* update steps */
        .steps-section {
            background: linear-gradient(180deg, #ffffff 0%, #F7F8F4 100%);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 20px;
        }

        .step-card {
            background: #ffffff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 28px 24px 24px;
            position: relative;
            border: 1px solid #EDF1E9;
            transition: transform 0.22s ease, box-shadow 0.22s ease;
        }

        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .step-no {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            background: linear-gradient(145deg, var(--primary), var(--primary-2));
            border-radius: 14px;
            color: #0B1713;
            font-weight: 900;
            font-size: 18px;
            margin-bottom: 18px;
        }

        .step-card h3 {
            margin: 0 0 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
        }

        .step-card p {
            margin: 0;
            color: var(--muted);
            font-size: 14.8px;
            line-height: 1.8;
        }

        /* sync notice */
        .sync-section {
            padding: 74px 0 80px;
        }

        .sync-grid {
            display: grid;
            grid-template-columns: 0.9fr 1.2fr;
            gap: 42px;
            align-items: center;
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 30px;
            border: 1px solid #EBF0E7;
        }

        .sync-grid img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: 20px;
            min-height: 240px;
            background: #eef2eb;
        }

        .sync-copy h2 {
            font-size: 26px;
            font-weight: 900;
            line-height: 1.4;
            margin: 0 0 14px;
        }

        .sync-copy p {
            color: var(--muted);
            line-height: 1.85;
            font-size: 15px;
            margin: 0 0 16px;
        }

        .sync-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14.8px;
            color: #374637;
        }

        .sync-list svg {
            flex-shrink: 0;
            margin-top: 5px;
        }

        /* FAQ */
        .faq-section {
            background: #FFFFFF;
            border-top: 1px solid #E8EEE2;
            border-bottom: 1px solid #E8EEE2;
        }

        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-panel {
            background: #FBFCF8;
            border: 1px solid #E6ECE0;
            border-radius: 18px;
            margin-bottom: 14px;
            padding: 4px 22px;
            transition: border 0.2s ease, background 0.2s ease;
        }

        .faq-panel[open] {
            background: #ffffff;
            border-color: #C7DAB6;
        }

        .faq-panel summary {
            list-style: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 0;
            user-select: none;
        }

        .faq-panel summary::-webkit-details-marker {
            display: none;
        }

        .faq-q {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 9px;
            background: rgba(201, 242, 84, 0.45);
            color: #405C00;
            font-size: 13px;
            font-weight: 900;
            flex-shrink: 0;
        }

        .faq-title {
            flex: 1;
            font-size: 15.5px;
            font-weight: 800;
            color: var(--text);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid var(--line);
            position: relative;
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }

        .faq-icon::after {
            content: "";
            position: absolute;
            left: 50%;
            top: 50%;
            width: 10px;
            height: 2px;
            background: #7E8D7C;
            transform: translate(-50%, -50%);
        }

        .faq-icon::before {
            content: "";
            position: absolute;
            left: 50%;
            top: 50%;
            width: 2px;
            height: 10px;
            background: #7E8D7C;
            transform: translate(-50%, -50%);
        }

        .faq-panel[open] .faq-icon {
            transform: rotate(45deg);
            border-color: var(--primary-2);
        }

        .faq-answer {
            padding: 0 0 18px 40px;
            color: var(--muted);
            font-size: 14.5px;
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            padding: 72px 0 80px;
        }

        .cta-panel {
            border-radius: var(--radius-xl);
            background: linear-gradient(120deg, #0B1713 0%, #203527 70%, #253E2C 100%);
            color: #ffffff;
            display: grid;
            grid-template-columns: 0.85fr 1.2fr;
            gap: 38px;
            padding: 40px 44px;
            overflow: hidden;
            position: relative;
            box-shadow: 0 16px 44px rgba(12, 30, 18, 0.2);
        }

        .cta-panel::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            right: -80px;
            top: -80px;
            border-radius: 50%;
            border: 16px solid rgba(201, 242, 84, 0.11);
        }

        .qr-box {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 22px;
            padding: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-height: 250px;
        }

        .qr-svg {
            width: 130px;
            height: 130px;
            border-radius: 18px;
            background: #ffffff;
            padding: 12px;
        }

        .qr-cap {
            font-size: 13px;
            color: #C8D6C8;
            margin-top: 12px;
        }

        .cta-copy {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .cta-copy h2 {
            font-size: 28px;
            font-weight: 900;
            line-height: 1.3;
            margin: 0 0 14px;
        }

        .cta-copy p {
            color: #C4D2C3;
            margin: 0 0 24px;
            line-height: 1.8;
            max-width: 520px;
            font-size: 15px;
        }

        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .cta-note {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 18px;
            color: #9CB09D;
            font-size: 13px;
        }

        .cta-note span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .decoded-section {
            padding-top: 10px;
        }

        /* footer */
        .site-footer {
            background: #0A110D;
            color: #A3B6A4;
            padding: 58px 0 26px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 0.9fr 0.9fr 0.9fr;
            gap: 42px;
        }

        .footer-brand .brand {
            padding-left: 0;
        }

        .footer-desc {
            max-width: 360px;
            color: #819583;
            font-size: 14px;
            line-height: 1.85;
            margin: 16px 0 0;
        }

        .footer-title {
            color: #ffffff;
            font-weight: 800;
            margin-bottom: 16px;
            font-size: 15.5px;
        }

        .footer-list li {
            margin-bottom: 10px;
        }

        .footer-list a {
            color: #93A894;
            font-size: 14px;
            transition: color 0.2s ease;
        }

        .footer-list a:hover {
            color: var(--primary);
        }

        .footer-note {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 44px;
            padding-top: 22px;
            color: #68806B;
            font-size: 13px;
        }

        @media (min-width: 768px) {
            .header-burger {
                display: none;
            }

            .header-search {
                display: block;
            }
        }

        @media (max-width: 1024px) {
            .sync-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 0.9fr 0.9fr;
                gap: 32px;
            }

            .footer-grid .footer-brand {
                grid-column: span 3;
            }
        }

        @media (max-width: 767px) {
            .header-search {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }

            .footer-grid .footer-brand {
                grid-column: span 2;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .cta-panel {
                grid-template-columns: 1fr;
                padding: 32px 26px;
            }
        }

        @media (max-width: 640px) {
            .category-hero {
                padding: 52px 0 56px;
            }

            .page-section {
                padding: 54px 0;
            }

            .version-timeline::before {
                left: 21px;
            }

            .version-item {
                display: block;
                position: relative;
                padding-left: 46px;
            }

            .vi-date {
                text-align: left;
                font-size: 12px;
                padding-top: 2px;
                margin-bottom: 8px;
            }

            .vi-dot {
                position: absolute;
                left: 4px;
                top: 8px;
                width: 12px;
                height: 12px;
                margin: 0;
            }

            .vi-card {
                padding: 20px 18px;
                margin-top: 4px;
            }

            .vi-head {
                gap: 8px;
            }

            .vi-card h3 {
                width: 100%;
                font-size: 17px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid .footer-brand {
                grid-column: span 1;
            }
        }