/* roulang page: index */
:root {
            --primary: #FF7A1A;
            --primary-hover: #E96A0D;
            --secondary: #F5C542;
            --secondary-bg: #FFF2DE;
            --dark: #3A1F0F;
            --bg: #FFF8F0;
            --white: #FFFFFF;
            --light-yellow: #FFF2DE;
            --border: #F0E4D6;
            --border-strong: #F5E8DA;
            --success: #2E9E5B;
            --danger: #D9442A;
            --text-body: #5A4030;
            --text-weak: #8A725F;
            --radius-card: 20px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --radius-img: 16px;
            --shadow-card: 0 10px 30px rgba(58, 31, 15, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(58, 31, 15, 0.14);
            --shadow-btn: 0 4px 12px rgba(255, 122, 26, 0.22);
            --font-title: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --fs-h1: 48px;
            --fs-h2: 32px;
            --fs-h3: 22px;
            --fs-body: 16px;
            --fs-small: 14px;
            --container-max: 1200px;
            --container-pad: 24px;
            --section-pad: 96px;
            --gap: 28px;
            --gap-sm: 18px;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: var(--fs-body);
            line-height: 1.8;
            color: var(--dark);
            background: var(--bg);
            min-height: 100vh;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        button {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }

        /* ── 导航 ── */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 248, 240, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(58, 31, 15, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 18px;
            color: var(--dark);
            white-space: nowrap;
            letter-spacing: -0.2px;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, #FF9A4D 55%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(255, 122, 26, 0.3);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-menu a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            white-space: nowrap;
            position: relative;
            transition: var(--transition);
        }

        .nav-menu a:hover {
            background: var(--secondary-bg);
            color: var(--primary);
        }

        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-menu a.active:hover {
            background: var(--primary-hover);
            color: #fff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--white);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .hamburger:hover {
            background: var(--secondary-bg);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        /* ── Hero ── */
        .hero {
            position: relative;
            padding: 72px 0 90px;
            background: var(--bg);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 520px;
            height: 520px;
            background: radial-gradient(circle, rgba(245, 197, 66, 0.22) 0%, rgba(255, 122, 26, 0.1) 42%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 122, 26, 0.12) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-content {
            max-width: 620px;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 22px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.5;
            white-space: nowrap;
        }

        .badge-yellow {
            background: var(--secondary);
            color: var(--dark);
        }

        .badge-orange {
            background: var(--primary);
            color: #fff;
        }

        .badge-outline {
            background: var(--white);
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .hero h1 {
            font-family: var(--font-title);
            font-size: var(--fs-h1);
            font-weight: 800;
            line-height: 1.22;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .hero h1 .highlight {
            color: var(--primary);
            position: relative;
            white-space: nowrap;
        }

        .hero h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 10px;
            background: rgba(245, 197, 66, 0.45);
            border-radius: 4px;
            z-index: -1;
        }

        .hero-sub {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-body);
            margin-bottom: 30px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            transition: var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 122, 26, 0.32);
        }

        .btn-primary:active {
            transform: translateY(2px);
            box-shadow: 0 2px 8px rgba(255, 122, 26, 0.25);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--secondary-bg);
            border-color: var(--primary-hover);
            transform: translateY(-1px);
        }

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

        .btn-golden {
            background: var(--secondary);
            color: var(--dark);
            border: 1.5px solid var(--secondary);
        }

        .btn-golden:hover {
            background: #EBB83A;
            border-color: #EBB83A;
            transform: translateY(-1px);
        }

        .btn-block {
            width: 100%;
        }

        .hero-visual {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            aspect-ratio: 4 / 3;
            background: var(--secondary-bg);
        }

        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(58, 31, 15, 0.55) 100%);
            pointer-events: none;
        }

        .hero-visual-label {
            position: absolute;
            bottom: 18px;
            left: 20px;
            z-index: 3;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        /* ── Section 通用 ── */
        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--white);
        }

        .section-soft {
            background: var(--light-yellow);
        }

        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 52px;
        }

        .section-head h2 {
            font-family: var(--font-title);
            font-size: var(--fs-h2);
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* ── 关系条 ── */
        .relation-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .relation-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 30px 28px;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .relation-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
        }

        .relation-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--secondary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 26px;
        }

        .relation-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .relation-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ── 入口矩阵 ── */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-sm);
        }

        .matrix-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            min-height: 160px;
            cursor: pointer;
        }

        .matrix-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
        }

        .matrix-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .matrix-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .matrix-card p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.65;
            flex-grow: 1;
        }

        .matrix-arrow {
            align-self: flex-end;
            font-size: 20px;
            color: var(--primary);
            margin-top: 10px;
            opacity: 0;
            transform: translateX(-8px);
            transition: var(--transition);
        }

        .matrix-card:hover .matrix-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        /* ── 流程 ── */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }

        .process-card {
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .process-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .process-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 18px;
        }

        .process-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .process-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ── 应用场景 ── */
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--gap);
        }

        .scene-card {
            display: flex;
            flex-direction: column;
            background: var(--white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .scene-img {
            aspect-ratio: 16 / 9;
            background: var(--secondary-bg);
            overflow: hidden;
        }

        .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .scene-body {
            padding: 24px 26px;
        }

        .scene-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .scene-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ── 视觉规范色块 ── */
        .color-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-sm);
        }

        .color-card {
            border-radius: var(--radius-card);
            padding: 26px 22px;
            text-align: center;
            transition: var(--transition);
            min-height: 140px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .color-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .color-swatch {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            border: 3px solid rgba(255,255,255,0.7);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .color-card h3 {
            font-size: 16px;
            font-weight: 700;
        }

        .color-card p {
            font-size: 13px;
            opacity: 0.8;
        }

        .color-card.orange {
            background: #FFEDDF;
        }
        .color-card.orange .color-swatch { background: #FF7A1A; }

        .color-card.yellow {
            background: #FFF8E0;
        }
        .color-card.yellow .color-swatch { background: #F5C542; }

        .color-card.brown {
            background: #EDE4DB;
        }
        .color-card.brown .color-swatch { background: #3A1F0F; }

        .color-card.cream {
            background: #FFF8F0;
            border: 1px solid var(--border);
        }
        .color-card.cream .color-swatch { background: #FFF8F0; border-color: #E8DDD0; }

        .color-card h3 { color: var(--dark); }
        .color-card p { color: var(--text-body); }

        /* ── 内容列表 ── */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .news-card {
            background: var(--white);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
        }

        .news-img {
            aspect-ratio: 16 / 9;
            background: var(--secondary-bg);
            overflow: hidden;
        }

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

        .news-body {
            padding: 22px 24px 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .news-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: var(--secondary-bg);
            color: var(--dark);
            margin-bottom: 12px;
            width: fit-content;
        }

        .news-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-summary {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex-grow: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .news-meta {
            font-size: 13px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .news-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-weak);
            background: var(--white);
            border-radius: var(--radius-card);
            border: 1px dashed var(--border);
            font-size: 15px;
        }

        /* ── 案例墙 ── */
        .case-wall {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: var(--gap-sm);
        }

        .case-item {
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
            aspect-ratio: 16 / 10;
            background: var(--secondary-bg);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .case-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .case-item.large {
            grid-row: span 2;
            aspect-ratio: auto;
        }

        .case-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(58, 31, 15, 0.7) 100%);
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 20px;
            color: #fff;
        }

        .case-overlay .badge {
            margin-bottom: 8px;
            width: fit-content;
        }

        .case-overlay h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.4;
        }

        /* ── 对比 ── */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--gap);
            align-items: stretch;
        }

        .comparison-card {
            border-radius: var(--radius-card);
            padding: 32px 30px;
            background: var(--white);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .comparison-card.bad {
            border-left: 5px solid var(--danger);
        }

        .comparison-card.good {
            border-left: 5px solid var(--success);
            background: #F4FBF6;
        }

        .comparison-label {
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .comparison-card.bad .comparison-label { color: var(--danger); }
        .comparison-card.good .comparison-label { color: var(--success); }

        .comparison-card ul {
            list-style: none;
            padding: 0;
        }

        .comparison-card li {
            padding: 8px 0;
            font-size: 15px;
            color: var(--text-body);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .comparison-card li::before {
            content: '✗';
            font-weight: 700;
            flex-shrink: 0;
        }

        .comparison-card.good li::before {
            content: '✓';
            color: var(--success);
        }

        .comparison-card.bad li::before {
            color: var(--danger);
        }

        /* ── 数据指标 ── */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-sm);
        }

        .stat-card {
            text-align: center;
            padding: 32px 20px;
            background: var(--white);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
        }

        .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            font-family: var(--font-title);
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-weak);
            margin-top: 6px;
        }

        /* ── FAQ ── */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }

        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card-hover);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            background: none;
            position: relative;
        }

        .faq-question::before {
            content: '';
            width: 4px;
            height: 22px;
            background: var(--primary);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--secondary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 18px;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            padding: 0 24px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 220px;
            padding: 0 24px 20px;
        }

        /* ── 表单 ── */
        .convert-grid {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 48px;
            align-items: center;
        }

        .form-card {
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--border);
        }

        .form-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .form-card p {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 22px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-input);
            font-size: 15px;
            font-family: var(--font-body);
            color: var(--dark);
            background: var(--bg);
            transition: var(--transition);
        }

        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.12);
            background: var(--white);
            outline: none;
        }

        .form-group textarea {
            min-height: 110px;
            resize: vertical;
        }

        .form-submit {
            width: 100%;
            padding: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: var(--transition);
            border: none;
        }

        .form-submit:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 122, 26, 0.28);
        }

        /* ── 资源入口条 ── */
        .resource-bar {
            background: var(--primary);
            padding: 32px 0;
        }

        .resource-bar .resource-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }

        .resource-bar a {
            padding: 8px 18px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.16);
            color: #fff;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

        .resource-bar a:hover {
            background: rgba(255, 255, 255, 0.28);
            transform: translateY(-2px);
        }

        /* ── 页脚 ── */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 248, 240, 0.85);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 50px;
        }

        .footer-brand h3 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            opacity: 0.8;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

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

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

        .footer-col ul a {
            font-size: 14px;
            opacity: 0.8;
            transition: var(--transition);
            display: inline-block;
        }

        .footer-col ul a:hover {
            opacity: 1;
            color: var(--secondary);
            transform: translateX(3px);
        }

        .footer-contact p {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 10px;
            opacity: 0.8;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 248, 240, 0.15);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            opacity: 0.7;
        }

        /* ── 移动端菜单 ── */
        @media (max-width: 1024px) {
            :root {
                --fs-h1: 38px;
                --fs-h2: 28px;
                --section-pad: 72px;
                --gap: 22px;
                --gap-sm: 14px;
            }

            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .color-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

        @media (max-width: 768px) {
            :root {
                --fs-h1: 32px;
                --fs-h2: 24px;
                --fs-h3: 20px;
                --section-pad: 56px;
                --container-pad: 20px;
                --gap: 18px;
            }

            .hamburger {
                display: flex;
            }

            .nav-menu {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 16px 20px 24px;
                box-shadow: 0 20px 30px rgba(58, 31, 15, 0.12);
                border-bottom: 1px solid var(--border);
                display: none;
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-menu a {
                padding: 12px 16px;
                width: 100%;
                text-align: left;
                border-radius: 12px;
                font-size: 16px;
            }

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

            .hero {
                padding: 40px 0 60px;
            }

            .hero-visual {
                aspect-ratio: 16 / 10;
            }

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

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

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

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

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

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

            .case-wall {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }

            .case-item.large {
                grid-row: span 1;
                aspect-ratio: 16 / 10;
            }

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

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-number {
                font-size: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .resource-bar .resource-inner {
                gap: 8px;
            }

            .resource-bar a {
                padding: 6px 14px;
                font-size: 13px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            :root {
                --fs-h1: 30px;
                --fs-h2: 22px;
                --section-pad: 44px;
                --gap: 14px;
            }

            .container {
                padding: 0 16px;
            }

            .nav-inner {
                min-height: 60px;
            }

            .logo {
                font-size: 15px;
                gap: 8px;
            }

            .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 10px;
            }

            .hero h1 {
                letter-spacing: -0.3px;
            }

            .hero-sub {
                font-size: 15px;
            }

            .btn {
                padding: 12px 20px;
                font-size: 15px;
            }

            .section-head h2 {
                font-size: 22px;
            }

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

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

            .form-card {
                padding: 24px 20px;
            }

            .comparison-card {
                padding: 24px 20px;
            }
        }

/* roulang page: article */
:root {
            --primary: #FF7A1A;
            --primary-hover: #E96A0D;
            --secondary: #F5C542;
            --secondary-bg: #FFF2DE;
            --dark: #3A1F0F;
            --bg: #FFF8F0;
            --white: #FFFFFF;
            --light-yellow: #FFF2DE;
            --border: #F0E4D6;
            --border-strong: #F5E8DA;
            --success: #2E9E5B;
            --danger: #D9442A;
            --text-body: #5A4030;
            --text-weak: #8A725F;
            --radius-card: 20px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --radius-img: 16px;
            --shadow-card: 0 10px 30px rgba(58, 31, 15, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(58, 31, 15, 0.14);
            --shadow-btn: 0 4px 12px rgba(255, 122, 26, 0.22);
            --font-title: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --fs-h1: 42px;
            --fs-h2: 32px;
            --fs-h3: 22px;
            --fs-body: 16px;
            --fs-small: 14px;
            --container-max: 1200px;
            --container-pad: 24px;
            --section-pad: 72px;
            --gap: 28px;
            --gap-sm: 18px;
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: var(--fs-body);
            line-height: 1.8;
            color: var(--dark);
            background: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        button {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }

        /* ── 导航 ── */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 248, 240, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(58, 31, 15, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 18px;
            color: var(--dark);
            white-space: nowrap;
            letter-spacing: -0.2px;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, #FF9A4D 55%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(255, 122, 26, 0.3);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li {
            list-style: none;
        }

        .nav-menu a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            white-space: nowrap;
            position: relative;
            transition: var(--transition);
        }

        .nav-menu a:hover {
            background: var(--secondary-bg);
            color: var(--primary);
        }

        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-menu a.active:hover {
            background: var(--primary-hover);
            color: #fff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--white);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

        .hamburger:hover {
            border-color: var(--primary);
            background: var(--secondary-bg);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--dark);
            transition: var(--transition);
        }

        /* ── 面包屑 ── */
        .breadcrumb-bar {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: var(--fs-small);
            color: var(--text-weak);
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .breadcrumb-nav li {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-nav li:not(:last-child)::after {
            content: "/";
            color: var(--text-weak);
            margin-left: 4px;
        }

        .breadcrumb-nav a {
            color: var(--text-weak);
        }

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

        .breadcrumb-nav .current {
            color: var(--dark);
            font-weight: 600;
        }

        /* ── 文章主体 ── */
        .article-main {
            padding: var(--section-pad) 0;
        }

        .article-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-header {
            margin-bottom: 32px;
        }

        .article-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 16px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.2px;
            transition: var(--transition);
        }

        .badge-yellow {
            background: var(--secondary);
            color: var(--dark);
        }

        .badge-orange {
            background: var(--primary);
            color: #fff;
        }

        .badge-outline {
            background: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .badge-outline:hover {
            background: var(--secondary-bg);
        }

        .article-title {
            font-family: var(--font-title);
            font-size: var(--fs-h1);
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            letter-spacing: -0.5px;
            margin: 0 0 16px 0;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: var(--fs-small);
            color: var(--text-weak);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }

        .article-meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
        }

        /* 文章主视觉 */
        .article-hero-image {
            margin-bottom: 36px;
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .article-hero-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-img);
        }

        /* 正文阅读区 */
        .article-content {
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 40px 44px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            margin-bottom: 36px;
        }

        .article-content p {
            font-size: var(--fs-body);
            line-height: 1.9;
            color: var(--text-body);
            margin-bottom: 20px;
        }

        .article-content h2 {
            font-family: var(--font-title);
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            margin: 32px 0 16px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
            line-height: 1.35;
        }

        .article-content h3 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin: 24px 0 12px;
            line-height: 1.4;
        }

        .article-content blockquote {
            background: var(--secondary-bg);
            border-left: 4px solid var(--secondary);
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            font-size: 15px;
            color: var(--text-body);
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px;
            padding-left: 26px;
        }

        .article-content li {
            margin-bottom: 10px;
            color: var(--text-body);
            line-height: 1.8;
        }

        .article-content img {
            border-radius: var(--radius-img);
            margin: 24px 0;
        }

        .article-content a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

        /* 文章空态 */
        .article-empty {
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 48px 32px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            margin-bottom: 36px;
        }

        .article-empty h2 {
            font-family: var(--font-title);
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .article-empty p {
            color: var(--text-weak);
            margin-bottom: 24px;
        }

        /* 关键词小卡 */
        .keyword-section {
            margin-bottom: 36px;
        }

        .keyword-section-title {
            font-family: var(--font-title);
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .keyword-card-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .keyword-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 14px 20px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(58, 31, 15, 0.04);
        }

        .keyword-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(58, 31, 15, 0.1);
        }

        .keyword-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
        }

        .keyword-dot.yellow {
            background: var(--secondary);
        }

        /* 相关推荐 */
        .related-section {
            margin-bottom: 36px;
        }

        .related-section-title {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 20px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }

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

        .related-card {
            background: var(--white);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
        }

        .related-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            border-radius: var(--radius-img) var(--radius-img) 0 0;
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .related-card:hover .related-card-img img {
            transform: scale(1.03);
        }

        .related-card-body {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .related-card-title {
            font-family: var(--font-title);
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-title a:hover {
            color: var(--primary);
        }

        .related-card-summary {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .related-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-weak);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        /* 返回 CTA */
        .article-cta {
            background: var(--secondary-bg);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 36px;
            border: 1px solid var(--border);
        }

        .article-cta-text {
            flex: 1;
            min-width: 260px;
        }

        .article-cta-text h2 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .article-cta-text p {
            font-size: 14px;
            color: var(--text-body);
            margin: 0;
        }

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

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            letter-spacing: 0.2px;
            transition: var(--transition);
            text-align: center;
            border: 2px solid transparent;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border: none;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 122, 26, 0.3);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(255, 122, 26, 0.2);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

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

        .btn-block {
            width: 100%;
        }

        /* 订阅条 */
        .article-newsletter {
            background: var(--dark);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 0;
        }

        .article-newsletter-text h2 {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .article-newsletter-text p {
            font-size: 14px;
            color: rgba(255, 248, 240, 0.75);
            margin: 0;
        }

        .article-newsletter-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            min-width: 280px;
            flex: 1;
            max-width: 420px;
        }

        .article-newsletter-form input {
            flex: 1;
            min-width: 180px;
            padding: 13px 18px;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 248, 240, 0.2);
            background: rgba(255, 248, 240, 0.08);
            color: #fff;
            font-size: 14px;
            font-family: var(--font-body);
            transition: var(--transition);
        }

        .article-newsletter-form input::placeholder {
            color: rgba(255, 248, 240, 0.45);
        }

        .article-newsletter-form input:focus {
            border-color: var(--primary);
            background: rgba(255, 248, 240, 0.12);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.2);
        }

        /* 页脚 */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 248, 240, 0.8);
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 248, 240, 0.7);
            margin: 0;
        }

        .footer-col h4 {
            font-family: var(--font-title);
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

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

        .footer-col ul li {
            margin-bottom: 8px;
            list-style: none;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 248, 240, 0.7);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 248, 240, 0.12);
            padding-top: 20px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 248, 240, 0.55);
            margin: 0;
        }

        /* ── 响应式 ── */
        @media (max-width: 1024px) {
            :root {
                --fs-h1: 36px;
                --fs-h2: 28px;
                --section-pad: 56px;
                --gap: 22px;
                --gap-sm: 14px;
            }

            .nav-menu {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(58, 31, 15, 0.12);
                transform: translateY(-110%);
                opacity: 0;
                visibility: hidden;
                transition: var(--transition);
                z-index: 999;
            }

            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .nav-menu a {
                display: block;
                padding: 12px 18px;
                border-radius: 12px;
                font-size: 16px;
                text-align: left;
            }

            .hamburger {
                display: flex;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --fs-h1: 32px;
                --fs-h2: 24px;
                --fs-h3: 20px;
                --section-pad: 44px;
                --container-pad: 20px;
                --gap: 18px;
            }

            .article-content {
                padding: 28px 22px;
            }

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

            .article-cta {
                flex-direction: column;
                text-align: center;
                padding: 28px 22px;
            }

            .article-cta-actions {
                width: 100%;
                justify-content: center;
            }

            .article-newsletter {
                flex-direction: column;
                text-align: center;
                padding: 28px 22px;
            }

            .article-newsletter-form {
                width: 100%;
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            :root {
                --fs-h1: 30px;
                --fs-h2: 22px;
                --section-pad: 36px;
                --gap: 14px;
                --container-pad: 16px;
            }

            .logo {
                font-size: 15px;
                letter-spacing: -0.3px;
            }

            .logo-mark {
                width: 32px;
                height: 32px;
                border-radius: 10px;
                font-size: 15px;
            }

            .article-title {
                font-size: 26px;
            }

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .article-content {
                padding: 22px 16px;
                border-radius: 16px;
            }

            .article-cta-actions {
                flex-direction: column;
                width: 100%;
            }

            .article-cta-actions .btn {
                width: 100%;
            }

            .article-newsletter-form {
                flex-direction: column;
            }

            .article-newsletter-form .btn {
                width: 100%;
            }

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

            .breadcrumb-nav {
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #FF7A1A;
            --primary-hover: #E96A0D;
            --secondary: #F5C542;
            --secondary-bg: #FFF2DE;
            --dark: #3A1F0F;
            --bg: #FFF8F0;
            --white: #FFFFFF;
            --light-yellow: #FFF2DE;
            --border: #F0E4D6;
            --border-strong: #F5E8DA;
            --success: #2E9E5B;
            --danger: #D9442A;
            --text-body: #5A4030;
            --text-weak: #8A725F;
            --radius-card: 20px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --radius-img: 16px;
            --shadow-card: 0 10px 30px rgba(58, 31, 15, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(58, 31, 15, 0.14);
            --shadow-btn: 0 4px 12px rgba(255, 122, 26, 0.22);
            --font-title: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --fs-h1: 48px;
            --fs-h2: 32px;
            --fs-h3: 22px;
            --fs-body: 16px;
            --fs-small: 14px;
            --container-max: 1200px;
            --container-pad: 24px;
            --section-pad: 96px;
            --gap: 28px;
            --gap-sm: 18px;
            --transition: all 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-body);
            font-size: var(--fs-body);
            line-height: 1.8;
            color: var(--dark);
            background: var(--bg);
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        button {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }
        /* ── 导航 ── */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 248, 240, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(58, 31, 15, 0.06);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 18px;
            color: var(--dark);
            white-space: nowrap;
            letter-spacing: -0.2px;
        }
        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, #FF9A4D 55%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(255, 122, 26, 0.3);
        }
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo-text strong {
            font-size: 17px;
            font-weight: 800;
            color: var(--dark);
        }
        .logo-text small {
            font-size: 11px;
            font-weight: 500;
            color: var(--text-weak);
            letter-spacing: 0.3px;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            white-space: nowrap;
            position: relative;
            transition: var(--transition);
        }
        .nav-menu a:hover {
            background: var(--secondary-bg);
            color: var(--primary);
        }
        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .nav-menu a.active:hover {
            background: var(--primary-hover);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--white);
            border: 1px solid var(--border);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .hamburger:hover {
            border-color: var(--primary);
            background: var(--secondary-bg);
        }
        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }
        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* ── 面包屑 ── */
        .breadcrumb-wrap {
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
        }
        .breadcrumb-nav a {
            color: var(--text-weak);
            transition: var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .sep {
            color: var(--border-strong);
        }
        .breadcrumb-nav .current {
            color: var(--primary);
            font-weight: 600;
        }
        /* ── 分类顶部横幅 ── */
        .cat-banner {
            background: linear-gradient(135deg, var(--secondary-bg) 0%, #FFFDF8 55%, var(--bg) 100%);
            padding: 56px 0 52px;
            border-bottom: 1px solid var(--border);
        }
        .cat-banner h1 {
            font-size: var(--fs-h1);
            font-family: var(--font-title);
            font-weight: 800;
            line-height: 1.25;
            margin: 0 0 16px;
            color: var(--dark);
        }
        .cat-banner h1 .highlight {
            color: var(--primary);
        }
        .cat-banner .cat-subtitle {
            font-size: 18px;
            color: var(--text-body);
            max-width: 760px;
            margin: 0 0 20px;
            line-height: 1.9;
        }
        .cat-banner .badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        /* ── 统计条 ── */
        .cat-stats-bar {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px 40px;
            box-shadow: var(--shadow-card);
            margin-top: -32px;
            position: relative;
            z-index: 2;
        }
        .stat-item {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            font-family: var(--font-title);
            line-height: 1.1;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.4;
        }
        .stat-divider {
            width: 1px;
            height: 40px;
            background: var(--border);
        }
        /* ── Section 通用 ── */
        .section {
            padding: var(--section-pad) 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-light-yellow {
            background: var(--light-yellow);
        }
        .section-title {
            font-size: var(--fs-h2);
            font-family: var(--font-title);
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 720px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        /* ── 内容卡片网格 ── */
        .cat-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }
        .cat-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--primary);
        }
        .cat-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--secondary-bg);
            flex-shrink: 0;
        }
        .cat-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .cat-card:hover .cat-card-img img {
            transform: scale(1.04);
        }
        .cat-card-body {
            padding: 22px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .cat-card-tag {
            align-self: flex-start;
            background: var(--secondary-bg);
            color: var(--dark);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .cat-card-title {
            font-size: 19px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .cat-card-summary {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .cat-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-weak);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .cat-card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .cat-card-link:hover {
            color: var(--primary-hover);
            gap: 8px;
        }
        /* ── 关键词解析 ── */
        .keyword-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap-sm);
        }
        .keyword-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 22px 20px;
            transition: var(--transition);
        }
        .keyword-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(58, 31, 15, 0.08);
        }
        .keyword-card .kw-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, #FFB277 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 18px;
            margin-bottom: 14px;
        }
        .keyword-card h3 {
            font-size: 17px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--dark);
            margin-bottom: 8px;
        }
        .keyword-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
        }
        /* ── FAQ ── */
        .faq-list {
            max-width: 860px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-item.open {
            border-color: var(--primary);
            box-shadow: 0 8px 24px rgba(58, 31, 15, 0.08);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            font-family: var(--font-title);
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--secondary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }
        .faq-answer p {
            margin: 0;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
        }
        /* ── CTA ── */
        .cta-section {
            background-image: url('/assets/images/8a43df28f2c52d68.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 80px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(58, 31, 15, 0.88) 0%, rgba(58, 31, 15, 0.75) 100%);
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .cta-left h2 {
            color: #fff;
            font-size: var(--fs-h2);
            font-family: var(--font-title);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .cta-left p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .cta-form-card {
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 32px 30px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
        }
        .cta-form-card h3 {
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-title);
            color: var(--dark);
            margin-bottom: 6px;
        }
        .cta-form-card .cta-form-desc {
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            font-size: 15px;
            font-family: var(--font-body);
            color: var(--dark);
            background: var(--bg);
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.15);
            background: #fff;
        }
        .form-group textarea {
            min-height: 100px;
            resize: vertical;
        }
        /* ── 按钮 ── */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            font-family: var(--font-body);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 122, 26, 0.35);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(2px);
            box-shadow: 0 2px 8px rgba(255, 122, 26, 0.25);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--secondary-bg);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-block {
            width: 100%;
            display: flex;
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
        }
        /* ── 徽章 ── */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
        }
        .badge-yellow {
            background: var(--secondary);
            color: var(--dark);
        }
        .badge-orange {
            background: var(--primary);
            color: #fff;
        }
        .badge-outline {
            background: var(--white);
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        /* ── 页脚 ── */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            font-family: var(--font-title);
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            font-family: var(--font-title);
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        /* ── 响应式 ── */
        @media (max-width: 1024px) {
            :root {
                --fs-h1: 38px;
                --fs-h2: 28px;
                --section-pad: 72px;
                --gap: 22px;
                --gap-sm: 14px;
            }
            .cat-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .keyword-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--white);
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 30px rgba(58, 31, 15, 0.12);
                padding: 12px 20px 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                display: block;
                padding: 12px 18px;
                border-radius: 12px;
                text-align: left;
            }
            .hamburger {
                display: flex;
            }
        }
        @media (max-width: 768px) {
            :root {
                --fs-h1: 32px;
                --fs-h2: 24px;
                --fs-h3: 20px;
                --section-pad: 56px;
                --container-pad: 20px;
                --gap: 18px;
            }
            .cat-card-grid {
                grid-template-columns: 1fr;
            }
            .keyword-grid {
                grid-template-columns: 1fr;
            }
            .cat-banner {
                padding: 40px 0 40px;
            }
            .cat-banner h1 {
                font-size: 30px;
            }
            .cat-stats-bar {
                flex-direction: column;
                align-items: stretch;
                gap: 14px;
                padding: 20px;
                margin-top: -24px;
            }
            .stat-divider {
                width: 100%;
                height: 1px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-form-card {
                padding: 24px 20px;
            }
            .logo {
                font-size: 15px;
            }
            .logo-text strong {
                font-size: 14px;
            }
            .logo-text small {
                font-size: 10px;
            }
        }
        @media (max-width: 480px) {
            :root {
                --fs-h1: 30px;
                --fs-h2: 22px;
                --section-pad: 44px;
                --gap: 14px;
            }
            .btn {
                width: 100%;
            }
            .cat-card-body {
                padding: 18px 16px 20px;
            }
            .section-title {
                font-size: 22px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #FF7A1A;
            --primary-hover: #E96A0D;
            --secondary: #F5C542;
            --secondary-bg: #FFF2DE;
            --dark: #3A1F0F;
            --bg: #FFF8F0;
            --white: #FFFFFF;
            --light-yellow: #FFF2DE;
            --border: #F0E4D6;
            --border-strong: #F5E8DA;
            --success: #2E9E5B;
            --danger: #D9442A;
            --text-body: #5A4030;
            --text-weak: #8A725F;
            --radius-card: 20px;
            --radius-btn: 999px;
            --radius-input: 12px;
            --radius-img: 16px;
            --shadow-card: 0 10px 30px rgba(58, 31, 15, 0.08);
            --shadow-card-hover: 0 16px 40px rgba(58, 31, 15, 0.14);
            --shadow-btn: 0 4px 12px rgba(255, 122, 26, 0.22);
            --font-title: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --fs-h1: 44px;
            --fs-h2: 30px;
            --fs-h3: 22px;
            --fs-body: 16px;
            --fs-small: 14px;
            --container-max: 1200px;
            --container-pad: 24px;
            --section-pad: 80px;
            --gap: 28px;
            --gap-sm: 18px;
            --transition: all 0.25s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: var(--fs-body);
            line-height: 1.8;
            color: var(--dark);
            background: var(--bg);
            min-height: 100vh;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        button {
            font-family: var(--font-body);
            cursor: pointer;
            border: none;
            background: none;
            transition: var(--transition);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }

        /* ── 导航 ── */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 248, 240, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 20px rgba(58, 31, 15, 0.06);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-title);
            font-weight: 800;
            font-size: 18px;
            color: var(--dark);
            white-space: nowrap;
            letter-spacing: -0.2px;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, #FF9A4D 55%, var(--secondary) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            font-weight: 900;
            flex-shrink: 0;
            box-shadow: 0 4px 14px rgba(255, 122, 26, 0.3);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li {
            margin: 0;
        }

        .nav-menu a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            white-space: nowrap;
            position: relative;
            transition: var(--transition);
        }

        .nav-menu a:hover {
            background: var(--secondary-bg);
            color: var(--primary);
        }

        .nav-menu a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-menu a.active:hover {
            background: var(--primary-hover);
            color: #fff;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: var(--white);
            border: 1px solid var(--border);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .hamburger:hover {
            background: var(--secondary-bg);
            border-color: var(--primary);
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

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

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ── 面包屑 ── */
        .breadcrumb-bar {
            padding: 20px 0;
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: var(--fs-small);
            color: var(--text-weak);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--text-weak);
            transition: var(--transition);
        }

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

        .breadcrumb-nav .sep {
            color: var(--border-strong);
        }

        .breadcrumb-nav .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ── 分类头部 ── */
        .category-hero {
            padding: 52px 0 48px;
            background: linear-gradient(180deg, var(--secondary-bg) 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border-strong);
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 122, 26, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero h1 {
            font-family: var(--font-title);
            font-size: var(--fs-h1);
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            margin: 0 0 14px;
            letter-spacing: -0.5px;
        }

        .category-hero h1 .highlight {
            color: var(--primary);
        }

        .category-hero .lead {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.9;
            max-width: 820px;
            margin: 0 0 20px;
        }

        .category-hero .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            line-height: 1.4;
            white-space: nowrap;
            transition: var(--transition);
        }

        .badge-yellow {
            background: var(--secondary);
            color: var(--dark);
        }

        .badge-orange {
            background: var(--primary);
            color: #fff;
        }

        .badge-outline {
            background: var(--white);
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .badge:hover {
            transform: translateY(-1px);
        }

        /* ── 统计条 ── */
        .stats-bar {
            padding: 24px 0;
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }

        .stats-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            align-items: center;
            justify-content: space-between;
        }

        .stat-item {
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: 140px;
        }

        .stat-number {
            font-family: var(--font-title);
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .stat-label {
            font-size: var(--fs-small);
            color: var(--text-weak);
            line-height: 1.5;
            max-width: 90px;
        }

        /* ── 内容卡片列表 ── */
        .section-news {
            padding: var(--section-pad) 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border-strong);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }

        .section-head h2 {
            font-family: var(--font-title);
            font-size: var(--fs-h2);
            font-weight: 700;
            color: var(--dark);
            margin: 0;
            line-height: 1.3;
            letter-spacing: -0.3px;
        }

        .section-head .section-sub {
            font-size: var(--fs-small);
            color: var(--text-weak);
            margin-top: 6px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: var(--transition);
            white-space: nowrap;
            border: 2px solid transparent;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 122, 26, 0.32);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(255, 122, 26, 0.2);
        }

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

        .btn-outline:hover {
            background: var(--secondary-bg);
            border-color: var(--primary-hover);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-block {
            width: 100%;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .news-card {
            background: var(--white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .news-card .img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--secondary-bg);
        }

        .news-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-card:hover .img-wrap img {
            transform: scale(1.04);
        }

        .news-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .card-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1.4;
            background: var(--secondary);
            color: var(--dark);
            transition: var(--transition);
        }

        .news-card .card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-card .card-title {
            font-family: var(--font-title);
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
            margin: 0 0 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition);
        }

        .news-card a:hover .card-title {
            color: var(--primary);
        }

        .news-card .card-summary {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin: 0 0 14px;
            flex: 1;
        }

        .news-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 13px;
            color: var(--text-weak);
            border-top: 1px solid var(--border-strong);
            padding-top: 14px;
        }

        .news-card .card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }

        .news-card .card-link:hover {
            color: var(--primary-hover);
            gap: 8px;
        }

        .empty-state {
            background: var(--white);
            border: 2px dashed var(--border-strong);
            border-radius: var(--radius-card);
            padding: 40px 24px;
            text-align: center;
            color: var(--text-weak);
            font-size: 15px;
        }

        /* ── 关键词解析 ── */
        .section-keywords {
            padding: var(--section-pad) 0;
            background: var(--white);
            border-bottom: 1px solid var(--border-strong);
        }

        .keyword-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }

        .keyword-card {
            background: var(--bg);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            padding: 26px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .keyword-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--primary);
            border-radius: 0 2px 2px 0;
        }

        .keyword-card:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
            border-color: var(--primary);
        }

        .keyword-card .kw-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--secondary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 14px;
        }

        .keyword-card h3 {
            font-family: var(--font-title);
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .keyword-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
            margin: 0;
        }

        /* ── FAQ ── */
        .section-faq {
            padding: var(--section-pad) 0;
            background: var(--bg);
            border-bottom: 1px solid var(--border-strong);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 820px;
        }

        .faq-item {
            background: var(--white);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-card);
        }

        .faq-item .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            cursor: pointer;
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-title);
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            transition: var(--transition);
        }

        .faq-item .faq-question:hover {
            color: var(--primary);
        }

        .faq-item .faq-number {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--secondary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .faq-item .faq-icon {
            margin-left: auto;
            font-size: 20px;
            color: var(--text-weak);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-item .faq-answer {
            padding: 0 22px 18px 64px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ── CTA 转化区 ── */
        .section-cta {
            padding: var(--section-pad) 0;
            background: linear-gradient(135deg, var(--dark) 0%, #4A2B18 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-content h2 {
            font-family: var(--font-title);
            font-size: var(--fs-h2);
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            line-height: 1.3;
        }

        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.9;
            margin: 0 0 24px;
        }

        .cta-content .cta-list {
            list-style: none;
            padding: 0;
            margin: 0 0 26px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .cta-content .cta-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
        }

        .cta-content .cta-list li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .cta-form-card {
            background: var(--white);
            border-radius: var(--radius-card);
            padding: 28px 26px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
        }

        .cta-form-card h3 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin: 0 0 18px;
            text-align: center;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 11px 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-input);
            font-size: 15px;
            font-family: var(--font-body);
            color: var(--dark);
            background: var(--bg);
            transition: var(--transition);
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.15);
            background: var(--white);
        }

        .form-group textarea {
            min-height: 90px;
            resize: vertical;
        }

        /* ── 页脚 ── */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand h3 {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-col h4 {
            font-family: var(--font-title);
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 20px 0 28px;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            margin: 0;
        }

        /* ── 响应式 ── */
        @media (max-width: 1024px) {
            :root {
                --fs-h1: 38px;
                --fs-h2: 28px;
                --section-pad: 72px;
                --gap: 22px;
                --gap-sm: 14px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .keyword-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .hamburger {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                flex-direction: column;
                background: var(--white);
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 30px rgba(58, 31, 15, 0.12);
                padding: 16px 24px;
                gap: 4px;
                z-index: 999;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                display: block;
                width: 100%;
                padding: 12px 16px;
                border-radius: 12px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --fs-h1: 32px;
                --fs-h2: 24px;
                --fs-h3: 20px;
                --section-pad: 56px;
                --container-pad: 20px;
                --gap: 18px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .keyword-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                gap: 18px;
                justify-content: flex-start;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .category-hero {
                padding: 36px 0 32px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .cta-form-card {
                padding: 22px 18px;
            }
            .faq-item .faq-answer {
                padding-left: 22px;
                padding-right: 18px;
            }
        }

        @media (max-width: 480px) {
            :root {
                --fs-h1: 30px;
                --fs-h2: 22px;
                --section-pad: 44px;
                --gap: 14px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .badge {
                font-size: 12px;
                padding: 5px 12px;
            }
            .news-card .card-title {
                font-size: 16px;
            }
            .stat-number {
                font-size: 24px;
            }
            .cta-content h2 {
                font-size: 22px;
            }
        }

/* roulang page: category3 */
:root {
        --primary: #FF7A1A;
        --primary-hover: #E96A0D;
        --secondary: #F5C542;
        --secondary-bg: #FFF2DE;
        --dark: #3A1F0F;
        --bg: #FFF8F0;
        --white: #FFFFFF;
        --light-yellow: #FFF2DE;
        --border: #F0E4D6;
        --border-strong: #F5E8DA;
        --success: #2E9E5B;
        --danger: #D9442A;
        --text-body: #5A4030;
        --text-weak: #8A725F;
        --radius-card: 20px;
        --radius-btn: 999px;
        --radius-input: 12px;
        --radius-img: 16px;
        --shadow-card: 0 10px 30px rgba(58, 31, 15, 0.08);
        --shadow-card-hover: 0 16px 40px rgba(58, 31, 15, 0.14);
        --shadow-btn: 0 4px 12px rgba(255, 122, 26, 0.22);
        --font-title: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        --fs-h1: 48px;
        --fs-h2: 32px;
        --fs-h3: 22px;
        --fs-body: 16px;
        --fs-small: 14px;
        --container-max: 1200px;
        --container-pad: 24px;
        --section-pad: 96px;
        --gap: 28px;
        --gap-sm: 18px;
        --transition: all 0.25s ease;
    }

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

    html {
        scroll-behavior: smooth;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    body {
        font-family: var(--font-body);
        font-size: var(--fs-body);
        line-height: 1.8;
        color: var(--dark);
        background: var(--bg);
        min-height: 100vh;
    }

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

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

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    select:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

    button {
        font-family: var(--font-body);
        cursor: pointer;
        border: none;
        background: none;
        transition: var(--transition);
    }

    .container {
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 var(--container-pad);
    }

    /* 导航 */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1000;
        background: rgba(255, 248, 240, 0.92);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        box-shadow: 0 4px 20px rgba(58, 31, 15, 0.06);
    }

    .nav-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        min-height: 70px;
        gap: 20px;
    }

    .logo {
        display: flex;
        align-items: center;
        gap: 12px;
        font-family: var(--font-title);
        font-weight: 800;
        font-size: 18px;
        color: var(--dark);
        white-space: nowrap;
        letter-spacing: -0.2px;
    }

    .logo-mark {
        width: 38px;
        height: 38px;
        border-radius: 12px;
        background: linear-gradient(135deg, var(--primary) 0%, #FF9A4D 55%, var(--secondary) 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        color: #fff;
        font-weight: 900;
        flex-shrink: 0;
        box-shadow: 0 4px 14px rgba(255, 122, 26, 0.3);
    }

    .nav-menu {
        display: flex;
        align-items: center;
        gap: 6px;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .nav-menu a {
        display: inline-block;
        padding: 8px 16px;
        border-radius: 999px;
        font-size: 15px;
        font-weight: 500;
        color: var(--dark);
        white-space: nowrap;
        position: relative;
        transition: var(--transition);
    }

    .nav-menu a:hover {
        background: var(--secondary-bg);
        color: var(--primary);
    }

    .nav-menu a.active {
        background: var(--primary);
        color: #fff;
        font-weight: 600;
    }

    .nav-menu a.active:hover {
        background: var(--primary-hover);
        color: #fff;
    }

    .hamburger {
        display: none;
        flex-direction: column;
        gap: 5px;
        width: 40px;
        height: 40px;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        background: var(--white);
        border: 1px solid var(--border);
        transition: var(--transition);
    }

    .hamburger:hover {
        border-color: var(--primary);
        background: var(--secondary-bg);
    }

    .hamburger span {
        display: block;
        width: 20px;
        height: 2px;
        background: var(--dark);
        border-radius: 99px;
        transition: var(--transition);
    }

    /* 面包屑 */
    .breadcrumb-section {
        padding: 28px 0 0;
    }

    .breadcrumb-nav {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: var(--fs-small);
        color: var(--text-weak);
        flex-wrap: wrap;
    }

    .breadcrumb-nav a {
        color: var(--text-weak);
        transition: var(--transition);
    }

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

    .breadcrumb-nav .separator {
        color: var(--border-strong);
        user-select: none;
    }

    .breadcrumb-nav .current {
        color: var(--primary);
        font-weight: 600;
    }

    /* 分类H1区 */
    .category-header {
        padding: 28px 0 32px;
        background: var(--bg);
    }

    .category-header-inner {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        padding: 40px 48px;
        box-shadow: var(--shadow-card);
    }

    .category-header h1 {
        font-family: var(--font-title);
        font-size: var(--fs-h1);
        font-weight: 800;
        color: var(--dark);
        line-height: 1.25;
        margin-bottom: 14px;
    }

    .category-header h1 .highlight {
        color: var(--primary);
    }

    .category-header .desc {
        font-size: 17px;
        color: var(--text-body);
        max-width: 860px;
        line-height: 1.9;
    }

    /* section通用 */
    .section {
        padding: var(--section-pad) 0;
    }

    .section-cream {
        background: var(--bg);
    }

    .section-white {
        background: var(--white);
    }

    .section-yellow {
        background: var(--light-yellow);
    }

    .section-title {
        font-family: var(--font-title);
        font-size: var(--fs-h2);
        font-weight: 800;
        color: var(--dark);
        line-height: 1.3;
        margin-bottom: 12px;
    }

    .section-sub {
        font-size: 16px;
        color: var(--text-weak);
        margin-bottom: 40px;
        max-width: 720px;
        line-height: 1.8;
    }

    /* 统计条 */
    .stat-strip {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: var(--gap-sm);
    }

    .stat-item {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: 16px;
        padding: 22px 20px;
        text-align: center;
        transition: var(--transition);
    }

    .stat-item:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-card);
        transform: translateY(-3px);
    }

    .stat-number {
        font-family: var(--font-title);
        font-size: 32px;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.2;
    }

    .stat-label {
        font-size: var(--fs-small);
        color: var(--text-body);
        margin-top: 6px;
    }

    /* 卡片主体网格 */
    .topic-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--gap);
    }

    .topic-card {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: var(--radius-card);
        overflow: hidden;
        box-shadow: var(--shadow-card);
        transition: var(--transition);
    }

    .topic-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-card-hover);
        border-color: var(--primary);
    }

    .topic-card .img-wrap {
        position: relative;
        overflow: hidden;
        aspect-ratio: 16 / 9;
        background: var(--light-yellow);
    }

    .topic-card .img-wrap img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .topic-card .badge-tag {
        position: absolute;
        top: 12px;
        left: 12px;
        background: var(--primary);
        color: #fff;
        padding: 4px 12px;
        border-radius: 999px;
        font-size: 12px;
        font-weight: 600;
        z-index: 2;
    }

    .topic-card .card-body {
        padding: 22px 24px 24px;
    }

    .topic-card .card-title {
        font-family: var(--font-title);
        font-size: 19px;
        font-weight: 700;
        color: var(--dark);
        margin-bottom: 8px;
        line-height: 1.4;
    }

    .topic-card .card-summary {
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.7;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 14px;
    }

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

    .topic-card .card-meta .tag-yellow {
        background: var(--secondary);
        color: var(--dark);
        padding: 3px 10px;
        border-radius: 999px;
        font-weight: 600;
    }

    /* 关键词解析 */
    .parse-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--gap-sm);
    }

    .parse-card {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: 16px;
        padding: 24px 20px;
        transition: var(--transition);
        text-align: center;
    }

    .parse-card:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-card);
        transform: translateY(-3px);
    }

    .parse-card .parse-icon {
        width: 48px;
        height: 48px;
        border-radius: 14px;
        margin: 0 auto 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 22px;
        font-weight: 700;
    }

    .parse-card .parse-title {
        font-family: var(--font-title);
        font-size: 17px;
        font-weight: 700;
        color: var(--dark);
        margin-bottom: 6px;
    }

    .parse-card .parse-desc {
        font-size: 13px;
        color: var(--text-body);
        line-height: 1.7;
    }

    .icon-orange { background: var(--primary); color: #fff; }
    .icon-yellow { background: var(--secondary); color: var(--dark); }
    .icon-brown { background: var(--dark); color: #fff; }
    .icon-cream { background: var(--light-yellow); color: var(--primary); }

    /* FAQ */
    .faq-list {
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .faq-item {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: 16px;
        overflow: hidden;
        transition: var(--transition);
    }

    .faq-item:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-card);
    }

    .faq-question {
        display: flex;
        align-items: center;
        gap: 14px;
        padding: 18px 24px;
        cursor: pointer;
        font-weight: 600;
        font-size: 16px;
        color: var(--dark);
        font-family: var(--font-title);
    }

    .faq-question .faq-bar {
        width: 4px;
        height: 20px;
        background: var(--primary);
        border-radius: 99px;
        flex-shrink: 0;
    }

    .faq-answer {
        padding: 0 24px 18px 42px;
        font-size: 14px;
        color: var(--text-body);
        line-height: 1.8;
        display: none;
    }

    .faq-item.open .faq-answer {
        display: block;
    }

    .faq-item.open .faq-question {
        color: var(--primary);
    }

    /* CTA */
    .cta-section {
        padding: var(--section-pad) 0;
        background: linear-gradient(135deg, var(--dark) 0%, #5A2D12 100%);
        border-radius: 24px;
        margin-bottom: var(--section-pad);
    }

    .cta-inner {
        display: grid;
        grid-template-columns: 1.2fr 1fr;
        gap: 48px;
        align-items: center;
    }

    .cta-left h2 {
        font-family: var(--font-title);
        font-size: 30px;
        font-weight: 800;
        color: #fff;
        line-height: 1.35;
        margin-bottom: 14px;
    }

    .cta-left p {
        color: rgba(255,248,240,0.8);
        font-size: 15px;
        line-height: 1.8;
    }

    .cta-form {
        background: var(--white);
        border-radius: var(--radius-card);
        padding: 32px;
        box-shadow: 0 20px 50px rgba(0,0,0,0.25);
    }

    .cta-form label {
        display: block;
        font-size: 14px;
        font-weight: 600;
        color: var(--dark);
        margin-bottom: 6px;
    }

    .cta-form input,
    .cta-form textarea,
    .cta-form select {
        width: 100%;
        border: 1px solid var(--border);
        border-radius: var(--radius-input);
        padding: 12px 16px;
        font-size: 14px;
        font-family: var(--font-body);
        color: var(--dark);
        background: var(--bg);
        transition: var(--transition);
        margin-bottom: 16px;
    }

    .cta-form input:focus,
    .cta-form textarea:focus,
    .cta-form select:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 4px rgba(255,122,26,0.12);
        outline: none;
        background: #fff;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 12px 28px;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 15px;
        transition: var(--transition);
        border: none;
        cursor: pointer;
    }

    .btn-primary {
        background: var(--primary);
        color: #fff;
        box-shadow: var(--shadow-btn);
    }

    .btn-primary:hover {
        background: var(--primary-hover);
        transform: translateY(-1px);
        box-shadow: 0 8px 20px rgba(255,122,26,0.32);
        color: #fff;
    }

    .btn-primary:active {
        transform: translateY(2px);
        box-shadow: 0 2px 8px rgba(255,122,26,0.2);
    }

    .btn-block {
        width: 100%;
    }

    .btn-outline {
        background: transparent;
        border: 1.5px solid var(--primary);
        color: var(--primary);
    }

    .btn-outline:hover {
        background: var(--secondary-bg);
        border-color: var(--primary-hover);
        color: var(--primary-hover);
        transform: translateY(-1px);
    }

    /* 页脚 */
    .site-footer {
        background: var(--dark);
        padding: 64px 0 28px;
        color: rgba(255,248,240,0.85);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 36px;
        margin-bottom: 40px;
    }

    .footer-brand h3 {
        font-family: var(--font-title);
        font-size: 18px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
    }

    .footer-brand p {
        font-size: 14px;
        line-height: 1.8;
        color: rgba(255,248,240,0.7);
    }

    .footer-col h4 {
        font-size: 15px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 14px;
    }

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

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

    .footer-col ul li a {
        font-size: 14px;
        color: rgba(255,248,240,0.7);
        transition: var(--transition);
    }

    .footer-col ul li a:hover {
        color: var(--secondary);
    }

    .footer-bottom {
        border-top: 1px solid rgba(255,248,240,0.15);
        padding-top: 20px;
        text-align: center;
        font-size: 13px;
        color: rgba(255,248,240,0.6);
    }

    /* 响应式 */
    @media (max-width: 1024px) {
        :root {
            --fs-h1: 38px;
            --fs-h2: 28px;
            --section-pad: 72px;
            --gap: 22px;
            --gap-sm: 14px;
        }

        .topic-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .parse-grid {
            grid-template-columns: repeat(2, 1fr);
        }

        .stat-strip {
            grid-template-columns: repeat(3, 1fr);
        }

        .cta-inner {
            grid-template-columns: 1fr;
            gap: 28px;
        }
    }

    @media (max-width: 768px) {
        :root {
            --fs-h1: 32px;
            --fs-h2: 24px;
            --fs-h3: 20px;
            --section-pad: 56px;
            --container-pad: 20px;
            --gap: 18px;
        }

        .hamburger {
            display: flex;
        }

        .nav-menu {
            display: none;
            position: absolute;
            top: 70px;
            left: 0;
            right: 0;
            background: var(--white);
            flex-direction: column;
            align-items: stretch;
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 10px 30px rgba(58,31,15,0.12);
            gap: 4px;
        }

        .nav-menu.open {
            display: flex;
        }

        .nav-menu a {
            display: block;
            padding: 12px 16px;
            text-align: left;
        }

        .category-header-inner {
            padding: 28px 24px;
        }

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

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

        .stat-strip {
            grid-template-columns: repeat(2, 1fr);
        }

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

    @media (max-width: 480px) {
        :root {
            --fs-h1: 30px;
            --fs-h2: 22px;
            --section-pad: 44px;
            --gap: 14px;
        }

        .stat-strip {
            grid-template-columns: 1fr;
        }

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

        .category-header-inner {
            padding: 22px 18px;
        }

        .cta-form {
            padding: 22px 18px;
        }
    }