/* roulang page: index */
:root {
            --primary: #0F2E24;
            --primary-dark: #132A20;
            --accent: #C29A64;
            --accent-light: #d9b481;
            --bg: #F6F3EE;
            --white: #FFFFFF;
            --text: #1F2937;
            --text-light: #6B7280;
            --border: #E5E0D8;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(15, 46, 36, 0.06);
            --shadow-hover: 0 12px 24px rgba(15, 46, 36, 0.12);
            --transition: 0.25s ease;
            --sidebar-width: 88px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "HarmonyOS Sans", "Source Han Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 1rem;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        button,
        input {
            font-family: inherit;
        }

        /* ===== 左侧竖向导航 ===== */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--primary);
            display: flex;
            flex-direction: column;
            align-items: center;
            z-index: 1040;
            padding: 20px 0 16px;
        }

        .side-brand {
            font-size: 15px;
            font-weight: 800;
            color: #F4F1EA;
            text-align: center;
            line-height: 1.4;
            letter-spacing: 0.02em;
            padding: 6px 4px 14px;
            border-bottom: 1px solid rgba(244, 241, 234, 0.15);
            width: 100%;
        }

        .side-brand span {
            color: var(--accent);
        }

        .side-nav-links {
            display: flex;
            flex-direction: column;
            width: 100%;
            flex: 1;
            padding-top: 18px;
            gap: 2px;
        }

        .side-nav-links a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 14px 4px;
            font-size: 12px;
            color: rgba(244, 241, 234, 0.7);
            position: relative;
            transition: all var(--transition);
        }

        .side-nav-links a i {
            font-size: 18px;
        }

        .side-nav-links a:hover {
            color: #F4F1EA;
            background: rgba(255, 255, 255, 0.05);
        }

        .side-nav-links a.active {
            color: var(--accent);
        }

        .side-nav-links a.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background: var(--accent);
            border-radius: 0 3px 3px 0;
        }

        .side-foot {
            font-size: 11px;
            color: rgba(244, 241, 234, 0.4);
            text-align: center;
            line-height: 1.5;
            padding-top: 12px;
            border-top: 1px solid rgba(244, 241, 234, 0.1);
            width: 100%;
        }

        /* ===== 移动端顶部导航 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 56px;
            background: var(--white);
            z-index: 1045;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 2px 8px rgba(15, 46, 36, 0.08);
            border-bottom: 1px solid var(--border);
        }

        .mobile-brand {
            font-size: 17px;
            font-weight: 800;
            color: var(--primary);
        }

        .mobile-brand span {
            color: var(--accent);
        }

        .hamburger {
            background: none;
            border: none;
            font-size: 22px;
            color: var(--primary);
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 56px;
            left: 0;
            width: 100%;
            height: calc(100vh - 56px);
            background: var(--primary);
            z-index: 1040;
            flex-direction: column;
            padding: 32px 28px;
            overflow-y: auto;
        }

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

        .mobile-menu a {
            color: #F4F1EA;
            font-size: 20px;
            font-weight: 600;
            padding: 16px 0;
            border-bottom: 1px solid rgba(244, 241, 234, 0.12);
        }

        .mobile-menu a.active {
            color: var(--accent);
        }

        .mobile-menu .mobile-download-btn {
            margin-top: 32px;
            background: var(--accent);
            color: var(--primary);
            border-radius: 999px;
            text-align: center;
            padding: 14px 0;
            font-weight: 700;
            font-size: 16px;
            border: none;
        }

        /* ===== 内容容器 ===== */
        .main-wrapper {
            margin-left: var(--sidebar-width);
            min-height: 100vh;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: var(--primary-dark);
            background-image: linear-gradient(90deg, rgba(15, 46, 36, 0.88) 0%, rgba(19, 42, 32, 0.68) 55%, rgba(19, 42, 32, 0.45) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 60%;
            padding: 110px 0 90px;
            color: #F4F1EA;
            overflow: hidden;
        }

        .hero-inner {
            max-width: 760px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(194, 154, 100, 0.15);
            border: 1px solid rgba(194, 154, 100, 0.4);
            color: var(--accent-light);
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 24px;
            letter-spacing: 0.02em;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4.25rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: #F4F1EA;
            text-wrap: balance;
            margin-bottom: 18px;
        }

        .hero h1 .accent-text {
            color: var(--accent);
        }

        .hero-sub {
            font-size: clamp(1rem, 1.4vw, 1.125rem);
            color: rgba(244, 241, 234, 0.85);
            max-width: 560px;
            margin-bottom: 36px;
            line-height: 1.7;
        }

        .hero-cta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary);
            border: none;
            border-radius: 999px;
            font-size: 16px;
            font-weight: 700;
            padding: 14px 36px;
            min-height: 52px;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(194, 154, 100, 0.35);
        }

        .btn-main:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(194, 154, 100, 0.4);
        }

        .btn-main:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(194, 154, 100, 0.3);
        }

        .btn-main:focus-visible {
            outline: 2px solid var(--accent-light);
            outline-offset: 2px;
        }

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: transparent;
            color: #F4F1EA;
            border: 2px solid rgba(244, 241, 234, 0.6);
            border-radius: 999px;
            font-size: 16px;
            font-weight: 500;
            padding: 12px 32px;
            min-height: 52px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-outline-light-custom:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
        }

        .btn-outline-light-custom:active {
            transform: translateY(1px);
        }

        .btn-outline-light-custom:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== 区块通用 ===== */
        .section-block {
            padding: 96px 0;
        }

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

        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 12px;
            text-wrap: balance;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1.0625rem;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 48px;
            line-height: 1.7;
        }

        .section-head-center {
            text-align: center;
        }

        .section-head-center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .tag-pill {
            display: inline-block;
            background: rgba(194, 154, 100, 0.12);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .tag-pill.dark {
            background: var(--primary);
            color: #F4F1EA;
        }

        /* ===== 功能截图轮播 ===== */
        .features-section {
            background: var(--white);
            padding: 96px 0;
        }

        .screenshot-carousel {
            position: relative;
            display: flex;
            gap: 24px;
            justify-content: center;
            align-items: center;
            padding: 20px 0 40px;
            overflow: hidden;
        }

        .shot-card {
            flex: 0 0 30%;
            background: var(--bg);
            border-radius: var(--radius-md);
            border: 2px solid transparent;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            transform: scale(0.92);
        }

        .shot-card.center {
            flex-basis: 34%;
            transform: scale(1.05);
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
            z-index: 2;
            background: var(--white);
        }

        .shot-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(244, 241, 234, 0.3);
            font-size: 30px;
        }

        .shot-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(194, 154, 100, 0.1);
            padding: 3px 12px;
            border-radius: 999px;
            margin: 14px 14px 6px;
        }

        .shot-desc {
            font-size: 14px;
            color: var(--text);
            line-height: 1.6;
            padding: 0 14px 14px;
        }

        .carousel-indicators-custom {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 12px;
        }

        .carousel-indicators-custom button {
            width: 24px;
            height: 4px;
            border-radius: 999px;
            border: none;
            background: var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }

        .carousel-indicators-custom button.active {
            width: 40px;
            background: var(--accent);
        }

        /* ===== 系统要求 ===== */
        .spec-section {
            background: var(--bg);
        }

        .spec-list {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 24px 36px;
            box-shadow: var(--shadow-sm);
        }

        .spec-item {
            display: flex;
            align-items: flex-start;
            padding: 22px 0;
            border-bottom: 1px solid var(--border);
            gap: 24px;
        }

        .spec-item:last-child {
            border-bottom: none;
        }

        .spec-label {
            flex: 0 0 120px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.6;
        }

        .spec-label i {
            color: var(--accent);
            font-size: 14px;
            width: 18px;
            text-align: center;
        }

        .spec-value {
            color: var(--text);
            font-size: 15px;
            line-height: 1.7;
            font-size-adjust: 0.5;
            padding: 2px 8px;
            border-radius: 4px;
            transition: background var(--transition);
            user-select: text;
        }

        .spec-value:hover {
            background: rgba(194, 154, 100, 0.08);
        }

        /* ===== 评价墙 ===== */
        .reviews-section {
            background: var(--white);
        }

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

        .review-card {
            background: var(--bg);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

        .review-card.featured {
            background: var(--primary);
            color: #F4F1EA;
        }

        .review-card.featured .review-author {
            color: #F4F1EA;
        }

        .review-stars {
            color: var(--accent);
            font-size: 15px;
            letter-spacing: 2px;
        }

        .review-text {
            font-size: 15px;
            line-height: 1.7;
            position: relative;
            padding-left: 16px;
            flex: 1;
        }

        .review-text::before {
            content: "\201C";
            position: absolute;
            left: 0;
            top: -4px;
            font-size: 28px;
            color: var(--accent);
            font-family: Georgia, serif;
            line-height: 1;
        }

        .review-author {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--text);
        }

        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }

        .review-meta {
            display: flex;
            flex-direction: column;
            line-height: 1.3;
        }

        .review-meta .time {
            font-size: 12px;
            color: var(--text-light);
        }

        .review-card.featured .review-meta .time {
            color: rgba(244, 241, 234, 0.55);
        }

        /* ===== 下载区 ===== */
        .download-section {
            position: relative;
            background: var(--primary-dark);
            padding: 90px 0;
            text-align: center;
            background-image: linear-gradient(135deg, rgba(15, 46, 36, 0.92) 0%, rgba(19, 42, 32, 0.85) 100%), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            color: #F4F1EA;
        }

        .download-section .section-title {
            color: #F4F1EA;
        }

        .download-section .section-desc {
            color: rgba(244, 241, 234, 0.75);
            margin-left: auto;
            margin-right: auto;
        }

        .download-btns {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 36px;
        }

        .btn-download-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            background: var(--accent);
            color: var(--primary);
            border: none;
            border-radius: 999px;
            font-size: 17px;
            font-weight: 700;
            padding: 16px 44px;
            height: 56px;
            min-width: 200px;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(194, 154, 100, 0.35);
        }

        .btn-download-primary:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            color: var(--primary-dark);
            box-shadow: 0 10px 28px rgba(194, 154, 100, 0.45);
        }

        .btn-download-primary:active {
            transform: translateY(1px) scale(0.99);
        }

        .btn-platform {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.05);
            color: #F4F1EA;
            border: 2px solid rgba(244, 241, 234, 0.5);
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            padding: 14px 32px;
            height: 56px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .btn-platform:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            background: rgba(194, 154, 100, 0.08);
        }

        .btn-platform:active {
            transform: translateY(1px);
        }

        .download-note {
            margin-top: 20px;
            font-size: 12px;
            color: rgba(244, 241, 234, 0.45);
        }

        .download-note i {
            margin-right: 4px;
            color: var(--accent);
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--bg);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .news-row {
            display: flex;
            background: var(--white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .news-thumb {
            flex: 0 0 160px;
            min-height: 120px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(244, 241, 234, 0.3);
            overflow: hidden;
        }

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

        .news-thumb .placeholder-icon {
            font-size: 28px;
        }

        .news-body {
            flex: 1;
            padding: 22px 28px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .news-tag {
            display: inline-block;
            align-self: flex-start;
            background: rgba(194, 154, 100, 0.14);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin: 0;
            transition: color var(--transition);
        }

        .news-body h3 a {
            color: inherit;
        }

        .news-body h3 a:hover {
            color: var(--accent);
        }

        .news-summary {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
            margin-top: auto;
        }

        .news-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            transition: color var(--transition);
        }

        .news-link:hover {
            color: var(--accent);
        }

        .news-link i {
            margin-left: 4px;
            font-size: 11px;
            transition: transform var(--transition);
        }

        .news-link:hover i {
            transform: translateX(3px);
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            background: var(--white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            color: var(--text-light);
        }

        .empty-state i {
            font-size: 42px;
            color: var(--accent);
            margin-bottom: 12px;
            display: block;
        }

        .empty-state p {
            margin-bottom: 12px;
        }

        .empty-state a {
            color: var(--accent);
            font-weight: 600;
        }

        /* ===== 订阅表单 ===== */
        .subscribe-wrap {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px;
            margin-top: 64px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            border-left: 4px solid var(--accent);
        }

        .subscribe-info h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .subscribe-info p {
            font-size: 14px;
            color: var(--text-light);
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .subscribe-form input {
            height: 48px;
            border-radius: 999px;
            border: 1px solid var(--border);
            padding: 0 20px;
            font-size: 14px;
            width: 260px;
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
            color: var(--text);
        }

        .subscribe-form input::placeholder {
            color: var(--text-light);
        }

        .subscribe-form input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(194, 154, 100, 0.15);
            background: var(--white);
        }

        .subscribe-form button {
            height: 48px;
            border-radius: 999px;
            background: var(--primary);
            color: #F4F1EA;
            border: none;
            padding: 0 28px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
        }

        .subscribe-form button:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .subscribe-form button:active {
            transform: translateY(1px);
        }

        .subscribe-form button:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--white);
        }

        .faq-accordion {
            max-width: 840px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }

        .accordion-item:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(194, 154, 100, 0.1);
        }

        .accordion-button {
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            padding: 16px 20px;
            line-height: 1.5;
            border: none;
            box-shadow: none !important;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            letter-spacing: 0.01em;
        }

        .accordion-button::after {
            content: "\2b";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            background-image: none !important;
            font-size: 18px;
            color: var(--accent);
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
        }

        .accordion-button:not(.collapsed) {
            background: var(--bg);
            color: var(--primary);
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .accordion-body {
            background: var(--bg);
            color: var(--text);
            font-size: 15px;
            line-height: 1.7;
            padding: 0 20px 20px;
            border-left: 3px solid var(--accent);
            margin: 0 8px 8px;
            border-radius: 0 6px 6px 0;
        }

        /* ===== CTA 条 ===== */
        .cta-band {
            background: var(--accent);
            padding: 64px 0;
            text-align: center;
        }

        .cta-band .cta-title {
            font-size: clamp(1.5rem, 2.4vw, 2rem);
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .cta-band .cta-desc {
            font-size: 16px;
            color: rgba(15, 46, 36, 0.75);
            margin-bottom: 24px;
        }

        .cta-band .btn-main {
            background: var(--primary);
            color: #F4F1EA;
            box-shadow: 0 6px 20px rgba(15, 46, 36, 0.25);
        }

        .cta-band .btn-main:hover {
            background: var(--primary-dark);
            color: var(--accent-light);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary);
            color: rgba(244, 241, 234, 0.75);
            padding: 64px 0 24px;
            margin-left: var(--sidebar-width);
        }

        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            gap: 48px;
            flex-wrap: wrap;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(244, 241, 234, 0.1);
        }

        .footer-brand {
            flex: 0 0 320px;
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 800;
            color: #F4F1EA;
            margin-bottom: 12px;
        }

        .footer-brand h3 span {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.6;
            color: rgba(244, 241, 234, 0.6);
            margin: 0;
        }

        .footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .footer-link-group h4 {
            font-size: 15px;
            font-weight: 600;
            color: #F4F1EA;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-link-group a {
            display: block;
            font-size: 14px;
            color: rgba(244, 241, 234, 0.6);
            padding: 4px 0;
            transition: color var(--transition);
        }

        .footer-link-group a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            font-size: 13px;
            color: rgba(244, 241, 234, 0.35);
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero .hero-badge {
            animation: fadeInUp 0.6s ease both;
            animation-delay: 0.1s;
        }

        .hero h1 {
            animation: fadeInUp 0.6s ease both;
            animation-delay: 0.2s;
        }

        .hero .hero-sub {
            animation: fadeInUp 0.6s ease both;
            animation-delay: 0.3s;
        }

        .hero-cta {
            animation: fadeInUp 0.6s ease both;
            animation-delay: 0.4s;
        }

        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .side-nav {
                width: 76px;
            }

            .side-brand {
                font-size: 13px;
            }

            .side-nav-links a {
                font-size: 11px;
            }

            .main-wrapper {
                margin-left: 76px;
            }

            .footer {
                margin-left: 76px;
            }

            .container-custom {
                padding: 0 24px;
            }

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

            .review-card.featured {
                grid-column: span 2;
            }
        }

        @media (max-width: 767.98px) {
            .side-nav {
                display: none;
            }

            .mobile-header {
                display: flex;
            }

            .main-wrapper {
                margin-left: 0;
                padding-top: 56px;
            }

            .footer {
                margin-left: 0;
            }

            .hero {
                padding: 80px 0 60px;
            }

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

            .hero-cta .btn-main,
            .hero-cta .btn-outline-light-custom {
                width: 100%;
                justify-content: center;
            }

            .section-block {
                padding: 64px 0;
            }

            .container-custom {
                padding: 0 20px;
            }

            .screenshot-carousel {
                display: flex;
                overflow-x: auto;
                scroll-snap-type: x mandatory;
                gap: 16px;
                padding: 0 16px 24px;
                scroll-padding: 16px;
                justify-content: flex-start;
            }

            .shot-card {
                flex: 0 0 82%;
                scroll-snap-align: center;
                transform: scale(0.95);
            }

            .shot-card.center {
                flex-basis: 82%;
                transform: scale(1);
            }

            .spec-list {
                padding: 16px 20px;
            }

            .spec-item {
                flex-direction: column;
                gap: 6px;
                padding: 18px 0;
            }

            .spec-label {
                flex: none;
                width: 100%;
            }

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

            .review-card.featured {
                grid-column: auto;
            }

            .download-btns {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-download-primary,
            .btn-platform {
                width: 100%;
            }

            .news-thumb {
                display: none;
            }

            .news-body {
                padding: 20px;
            }

            .news-body h3 {
                font-size: 16px;
            }

            .subscribe-wrap {
                padding: 28px 20px;
            }

            .subscribe-form {
                flex-direction: column;
                width: 100%;
            }

            .subscribe-form input {
                width: 100%;
            }

            .subscribe-form button {
                width: 100%;
            }

            .footer-top {
                flex-direction: column;
                gap: 32px;
            }

            .footer-brand {
                flex: none;
            }

            .footer-links {
                gap: 32px 48px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 2.15rem;
            }

            .hero-badge {
                font-size: 12px;
            }

            .btn-main {
                padding: 14px 24px;
                font-size: 15px;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .shot-card {
                flex-basis: 88%;
            }

            .shot-card.center {
                flex-basis: 88%;
            }

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

            .footer-inner {
                padding: 0 20px;
            }
        }

        /* ===== prefers-reduced-motion ===== */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }

            .reveal {
                opacity: 1;
                transform: none;
            }
        }

/* roulang page: article */
:root {
    --primary: #0F2E24;
    --primary-dark: #132A20;
    --gold: #C29A64;
    --gold-light: #D4AE7F;
    --bg: #F6F3EE;
    --white: #FFFFFF;
    --text: #1F2937;
    --text-light: #6B7280;
    --border: rgba(15, 46, 36, 0.1);
    --radius-lg: 20px;
    --radius-card: 14px;
    --radius-btn: 999px;
    --shadow-sm: 0 2px 8px rgba(15, 46, 36, 0.06);
    --shadow-hover: 0 12px 24px rgba(15, 46, 36, 0.12);
    --transition: 0.25s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: "PingFang SC", "HarmonyOS Sans", "Source Han Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color var(--transition); }
a:hover { color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button { border: none; background: none; cursor: pointer; }
input { font-family: inherit; }

.container-fluid { max-width: 1200px; margin: 0 auto; padding-left: 28px; padding-right: 28px; }

/* ===== 侧边导航 ===== */
.side-nav {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 88px;
    background: var(--primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px 0 22px;
    z-index: 1040;
    transition: transform var(--transition);
}
.side-nav-brand { margin-bottom: 44px; }
.brand-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--white);
    text-align: center;
    line-height: 1.4;
    letter-spacing: 0.06em;
}
.brand-logo span { color: var(--gold); }
.side-nav-links {
    display: flex;
    flex-direction: column;
    width: 100%;
    flex: 1;
}
.side-nav-links a {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 16px 0;
    font-size: 0.75rem;
    color: rgba(244, 241, 234, 0.75);
    position: relative;
    transition: color var(--transition), background var(--transition);
}
.side-nav-links a i { font-size: 1.125rem; }
.side-nav-links a:hover { color: var(--white); background: rgba(255, 255, 255, 0.05); }
.side-nav-links a.active { color: var(--gold); }
.side-nav-links a.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 2px;
    background: var(--gold);
    border-radius: 0 2px 2px 0;
}
.side-nav-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding-top: 16px;
    font-size: 0.625rem;
    color: rgba(244, 241, 234, 0.45);
    text-align: center;
}
.side-nav-download {
    display: inline-block;
    background: var(--gold);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: var(--radius-btn);
    transition: background var(--transition), transform var(--transition);
}
.side-nav-download:hover { background: var(--gold-light); color: var(--primary); transform: translateY(-2px); }

/* ===== 移动端顶部导航 ===== */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1050;
    box-shadow: 0 2px 12px rgba(15, 46, 36, 0.06);
}
.mobile-header .brand-logo {
    flex-direction: row;
    color: var(--primary);
    font-size: 1rem;
    gap: 4px;
}
.mobile-header .brand-logo span { color: var(--gold); }
.mobile-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    gap: 5px;
}
.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.mobile-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--primary);
    z-index: 1045;
    flex-direction: column;
    justify-content: center;
    padding: 40px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}
.mobile-overlay.open { opacity: 1; visibility: visible; }
.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 50px;
}
.mobile-nav a {
    color: var(--white);
    font-size: 1.75rem;
    font-weight: 700;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.mobile-nav a:hover { color: var(--gold); }
.mobile-menu-footer { text-align: center; }
.mobile-menu-footer .btn {
    width: 100%;
    height: 56px;
    font-size: 1rem;
}

/* ===== 主内容区 ===== */
.main-content {
    margin-left: 88px;
    padding: 0 0 64px;
}

/* ===== 面包屑 ===== */
.article-breadcrumb {
    padding: 32px 0 10px;
}
.article-breadcrumb nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-light);
}
.article-breadcrumb a {
    color: var(--text-light);
    transition: color var(--transition);
}
.article-breadcrumb a:hover { color: var(--gold); }
.article-breadcrumb .sep { color: rgba(107, 114, 128, 0.4); }
.article-breadcrumb .current-title {
    color: var(--text);
    max-width: 420px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.article-breadcrumb .current-category { color: var(--gold); font-weight: 600; }

/* ===== 文章卡片 ===== */
.article-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 52px 56px 44px;
    margin: 0 auto;
    max-width: 880px;
    position: relative;
}
.article-category-name {
    display: inline-block;
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 0.04em;
    margin-bottom: 10px;
    position: relative;
    padding-bottom: 8px;
}
.article-category-name::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 36px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
}
.article-title {
    font-size: clamp(1.75rem, 3.4vw, 2.625rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--text);
    margin: 16px 0 18px;
    text-wrap: balance;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 20px;
    padding-bottom: 28px;
    margin-bottom: 28px;
    border-bottom: 1px solid var(--border);
    color: var(--text-light);
    font-size: 0.875rem;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.meta-item i { color: var(--gold); font-size: 0.875rem; }

/* ===== 正文排版 ===== */
.article-body {
    max-width: 720px;
    margin: 0 auto;
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--text);
}
.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 2.2em 0 0.8em;
    color: var(--primary);
    letter-spacing: -0.01em;
    line-height: 1.4;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}
.article-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 1.8em 0 0.7em;
    color: var(--primary);
    line-height: 1.45;
}
.article-body h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 1.5em 0 0.5em;
    color: var(--text);
}
.article-body p {
    margin: 0 0 1.5em;
    text-align: justify;
}
.article-body a {
    color: var(--gold);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(194, 154, 100, 0.4);
    transition: text-decoration-color var(--transition);
}
.article-body a:hover { text-decoration-color: var(--gold); }
.article-body img {
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    margin: 2em auto;
}
.article-body figure {
    margin: 2em 0;
}
.article-body figcaption {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--text-light);
    margin-top: 10px;
}
.article-body blockquote {
    border-left: 4px solid var(--gold);
    background: rgba(194, 154, 100, 0.08);
    padding: 16px 24px;
    margin: 1.8em 0;
    border-radius: 0 12px 12px 0;
    color: var(--text);
    font-style: normal;
}
.article-body ul,
.article-body ol {
    margin: 0 0 1.5em;
    padding-left: 1.5em;
}
.article-body ul li,
.article-body ol li {
    margin-bottom: 0.5em;
}
.article-body ul li::marker { color: var(--gold); }
.article-body pre {
    background: var(--primary-dark);
    color: #E5E7EB;
    border-radius: 14px;
    padding: 24px;
    overflow-x: auto;
    font-size: 0.875rem;
    line-height: 1.7;
    margin: 2em 0;
}
.article-body code {
    background: rgba(15, 46, 36, 0.08);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.9em;
}
.article-body pre code {
    background: transparent;
    color: inherit;
    padding: 0;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.8em 0;
    font-size: 0.9375rem;
}
.article-body table th,
.article-body table td {
    border: 1px solid var(--border);
    padding: 12px 16px;
    text-align: left;
}
.article-body table th {
    background: rgba(15, 46, 36, 0.04);
    font-weight: 700;
    color: var(--primary);
}
.article-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 2.5em 0;
}

/* ===== 内容未找到 ===== */
.content-not-found {
    text-align: center;
    padding: 60px 20px;
}
.not-found-icon {
    width: 84px;
    height: 84px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: rgba(194, 154, 100, 0.12);
    color: var(--gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}
.content-not-found h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}
.content-not-found p {
    color: var(--text-light);
    margin-bottom: 28px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    padding: 12px 28px;
    font-size: 0.9375rem;
    height: 46px;
    border: 2px solid transparent;
    transition: all var(--transition);
    line-height: 1;
}
.btn:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
}
.btn-primary {
    background: var(--gold);
    color: var(--primary);
    border-color: var(--gold);
}
.btn-primary:hover {
    background: var(--gold-light);
    color: var(--primary);
    border-color: var(--gold-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(194, 154, 100, 0.25);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}
.btn-outline:active { transform: translateY(0); }
.btn-lg {
    height: 56px;
    padding: 0 42px;
    font-size: 1.0625rem;
}

/* ===== 文章底部导航 ===== */
.article-footer-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}
.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: color var(--transition);
}
.btn-back:hover { color: var(--gold); }
.prev-next {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.9375rem;
    color: var(--text-light);
}
.prev-next a {
    color: var(--text-light);
    transition: color var(--transition);
}
.prev-next a:hover { color: var(--gold); }
.prev-next .divider { color: rgba(107, 114, 128, 0.3); }

/* ===== 相关推荐 ===== */
.related-section {
    max-width: 880px;
    margin: 56px auto 0;
    padding: 0 24px;
}
.section-title {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 28px;
    position: relative;
    padding-left: 16px;
    line-height: 1.3;
}
.section-title::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6%;
    bottom: 6%;
    width: 4px;
    background: var(--gold);
    border-radius: 4px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--white);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
    display: block;
}
.related-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}
.related-thumb {
    aspect-ratio: 16 / 9;
    background: rgba(15, 46, 36, 0.06);
    overflow: hidden;
}
.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.related-card:hover .related-thumb img { transform: scale(1.04); }
.related-info {
    padding: 18px 20px 22px;
}
.related-tag {
    display: inline-block;
    background: rgba(194, 154, 100, 0.12);
    color: var(--gold);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 10px;
}
.related-info h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition);
}
.related-card:hover .related-info h3 { color: var(--gold); }

/* ===== CTA ===== */
.article-cta {
    max-width: 880px;
    margin: 56px auto 0;
    background: var(--primary);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.article-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(194, 154, 100, 0.15), transparent 60%);
    pointer-events: none;
}
.article-cta h2 {
    color: var(--white);
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    font-weight: 700;
    margin-bottom: 10px;
    position: relative;
}
.article-cta p {
    color: rgba(244, 241, 234, 0.8);
    font-size: 1rem;
    margin-bottom: 28px;
    position: relative;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    position: relative;
}
.cta-buttons .btn-primary {
    background: var(--gold);
    color: var(--primary);
    border-color: var(--gold);
}
.cta-buttons .btn-outline-light {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(244, 241, 234, 0.5);
}
.cta-buttons .btn-outline-light:hover {
    background: rgba(244, 241, 234, 0.1);
    border-color: var(--white);
}

/* ===== 订阅表单 ===== */
.subscribe-section {
    max-width: 880px;
    margin: 56px auto 0;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 40px;
    text-align: center;
}
.subscribe-section h2 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}
.subscribe-section p {
    color: var(--text-light);
    font-size: 0.9375rem;
    margin-bottom: 24px;
}
.subscribe-form {
    display: flex;
    gap: 12px;
    max-width: 480px;
    margin: 0 auto;
}
.subscribe-form input {
    flex: 1;
    height: 48px;
    border: 1px solid rgba(15, 46, 36, 0.15);
    border-radius: 999px;
    padding: 0 24px;
    font-size: 0.9375rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    background: var(--bg);
}
.subscribe-form input:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(194, 154, 100, 0.15);
}
.subscribe-form .btn {
    height: 48px;
    padding: 0 28px;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--primary-dark);
    color: rgba(244, 241, 234, 0.75);
    margin-left: 88px;
    padding: 60px 0 32px;
    margin-top: 64px;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(244, 241, 234, 0.1);
}
.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}
.footer-brand h3 span { color: var(--gold); }
.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: rgba(244, 241, 234, 0.6);
    max-width: 360px;
}
.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.footer-link-group h4 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}
.footer-link-group a {
    display: block;
    font-size: 0.875rem;
    color: rgba(244, 241, 234, 0.6);
    padding: 4px 0;
    transition: color var(--transition);
}
.footer-link-group a:hover { color: var(--gold); }
.footer-bottom {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding-top: 24px;
    font-size: 0.8125rem;
    color: rgba(244, 241, 234, 0.35);
}

/* ===== 响应式 ===== */
@media (max-width: 991.98px) {
    .side-nav { width: 72px; }
    .side-nav-links a { font-size: 0; }
    .side-nav-links a i { font-size: 1.25rem; }
    .side-nav-download { font-size: 0; padding: 8px 12px; }
    .side-nav-download i { font-size: 1rem; }
    .side-nav-download::before { content: "\f019"; font-family: "Font Awesome 6 Free"; font-weight: 900; }
    .main-content { margin-left: 72px; }
    .footer { margin-left: 72px; }
    .related-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767.98px) {
    .side-nav { display: none; }
    .mobile-header, .mobile-overlay { display: flex; }
    .main-content { margin-left: 0; padding-top: 60px; }
    .footer { margin-left: 0; }
    .article-card { padding: 32px 22px 30px; border-radius: 0; box-shadow: none; }
    .article-title { font-size: 1.5rem; }
    .article-meta { gap: 12px; font-size: 0.8125rem; }
    .article-breadcrumb { padding: 24px 16px 8px; }
    .container-fluid { padding-left: 16px; padding-right: 16px; }
    .related-grid { grid-template-columns: 1fr; }
    .cta-buttons { flex-direction: column; align-items: stretch; }
    .cta-buttons .btn { width: 100%; }
    .subscribe-form { flex-direction: column; }
    .subscribe-form .btn { width: 100%; }
    .footer-top { grid-template-columns: 1fr; gap: 32px; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .article-footer-nav { flex-direction: column; align-items: flex-start; }
    .prev-next { width: 100%; justify-content: space-between; }
    .related-section { padding: 0 16px; }
    .article-cta { padding: 32px 22px; margin-top: 40px; }
    .subscribe-section { padding: 28px 22px; margin-top: 40px; border-radius: 14px; }
}
@media (max-width: 520px) {
    body { font-size: 0.9375rem; }
    .mobile-header { height: 56px; }
    .main-content { padding-top: 56px; }
    .article-title { font-size: 1.375rem; }
    .article-category-name { font-size: 1rem; }
    .article-body { font-size: 0.9375rem; }
    .footer-links { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* roulang page: category1 */
:root {
            --primary: #0F2E24;
            --primary-dark: #132A20;
            --primary-light: #1B4A3A;
            --accent: #C29A64;
            --accent-light: #D9B78A;
            --bg: #F6F3EE;
            --white: #FFFFFF;
            --text: #1F2937;
            --text-light: #6B7280;
            --border: #E5E0D8;
            --warm-light: #F4F1EA;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 8px rgba(15, 46, 36, 0.06);
            --shadow-hover: 0 12px 24px rgba(15, 46, 36, 0.12);
            --space-section: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "HarmonyOS Sans", "Source Han Sans SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        h1,
        h2,
        h3,
        h4,
        h5 {
            margin: 0 0 0.5em;
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
        }

        p {
            margin: 0 0 1em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        img {
            max-width: 100%;
            display: block;
            background: var(--border);
        }

        button {
            border: none;
            background: transparent;
            cursor: pointer;
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
        }

        .main-wrap {
            margin-left: 88px;
        }

        /* ===== 左侧竖向导航 ===== */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 88px;
            height: 100vh;
            background: var(--primary);
            z-index: 1030;
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 20px 0 16px;
        }

        .side-brand {
            margin-bottom: 36px;
            text-align: center;
        }

        .side-brand a {
            color: var(--warm-light);
            font-size: 15px;
            font-weight: 800;
            letter-spacing: 0.02em;
            line-height: 1.3;
            display: block;
        }

        .side-brand a span {
            color: var(--accent);
            font-size: 12px;
            font-weight: 700;
        }

        .side-nav-links {
            flex: 1;
            width: 100%;
            display: flex;
            flex-direction: column;
        }

        .side-nav-links a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            padding: 14px 0;
            color: rgba(244, 241, 234, 0.65);
            font-size: 11.5px;
            font-weight: 500;
            transition: color 0.25s ease, background 0.25s ease;
            position: relative;
        }

        .side-nav-links a i {
            font-size: 18px;
            width: 22px;
            text-align: center;
        }

        .side-nav-links a:hover {
            color: var(--warm-light);
            background: rgba(255, 255, 255, 0.04);
        }

        .side-nav-links a.active {
            color: var(--accent);
        }

        .side-nav-links a.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            border-radius: 0 3px 3px 0;
            background: var(--accent);
        }

        .side-bottom {
            font-size: 10px;
            color: rgba(244, 241, 234, 0.35);
            writing-mode: vertical-rl;
            letter-spacing: 0.1em;
        }

        @media (max-width: 991.98px) {
            .side-nav-links a {
                font-size: 0;
                gap: 6px;
            }
            .side-nav-links a i {
                font-size: 20px;
            }
            .side-brand a {
                font-size: 11px;
            }
            .side-brand a span {
                font-size: 9px;
            }
        }

        @media (max-width: 767.98px) {
            .side-nav {
                display: none;
            }
            .main-wrap {
                margin-left: 0;
                padding-top: 56px;
            }
        }

        /* ===== 移动端顶部导航 / 全屏菜单 ===== */
        .mobile-header {
            display: none;
        }

        .mobile-burger {
            width: 44px;
            height: 44px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            position: relative;
            z-index: 1060;
        }

        .mobile-burger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform 0.25s ease, opacity 0.25s ease, background 0.25s ease;
        }

        .mobile-burger.is-open span {
            background: var(--warm-light);
        }

        .mobile-burger.is-open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .mobile-burger.is-open span:nth-child(2) {
            opacity: 0;
        }

        .mobile-burger.is-open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
        }

        @media (max-width: 767.98px) {
            .mobile-header {
                display: flex;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                height: 56px;
                background: var(--white);
                align-items: center;
                justify-content: space-between;
                padding: 0 16px 0 20px;
                z-index: 1040;
                box-shadow: 0 1px 8px rgba(15, 46, 36, 0.06);
            }
            .mobile-brand {
                font-size: 1.125rem;
                font-weight: 800;
                color: var(--primary);
            }
            .mobile-brand span {
                color: var(--accent);
            }
            .mobile-menu {
                display: flex;
                position: fixed;
                inset: 0;
                background: var(--primary);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 28px;
                z-index: 1050;
                opacity: 0;
                visibility: hidden;
                transform: translateY(24px);
                transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s ease;
            }
            .mobile-menu.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .mobile-menu a {
                color: var(--warm-light);
                font-size: 1.5rem;
                font-weight: 700;
                line-height: 1.2;
            }
            .mobile-menu a.active {
                color: var(--accent);
            }
            .mobile-menu .btn-accent {
                font-size: 1rem;
                margin-top: 12px;
                color: var(--primary);
            }
        }

        /* ===== 通用按钮 ===== */
        .btn {
            border-radius: 999px;
            padding: 12px 28px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        }

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

        .btn-accent:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            color: var(--primary);
            transform: translateY(-2px);
        }

        .btn-accent:focus {
            box-shadow: 0 0 0 3px rgba(194, 154, 100, 0.4);
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid rgba(15, 46, 36, 0.45);
            color: var(--primary);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light {
            background: transparent;
            border: 1.5px solid rgba(244, 241, 234, 0.65);
            color: var(--warm-light);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent);
            color: var(--accent);
        }

        .btn-lg {
            min-height: 56px;
            min-width: 200px;
            font-size: 1.0625rem;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-cat {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-light);
            margin-bottom: 28px;
            padding-top: 4px;
        }

        .breadcrumb-cat a {
            color: var(--primary);
            font-weight: 500;
        }

        .breadcrumb-cat a:hover {
            color: var(--accent);
        }

        .breadcrumb-cat .current {
            color: var(--text-light);
        }

        /* ===== 分类页顶部介绍区 ===== */
        .cat-hero {
            background: var(--bg);
            padding: 72px 0 80px;
            border-bottom: 1px solid var(--border);
        }

        .cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: var(--warm-light);
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 0.875rem;
            font-weight: 500;
            margin-bottom: 24px;
        }

        .cat-badge i {
            color: var(--accent);
        }

        .cat-hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            color: var(--primary);
            line-height: 1.15;
            margin-bottom: 20px;
            text-wrap: balance;
        }

        .cat-hero h1 span {
            display: block;
            color: var(--accent);
            font-size: 0.48em;
            font-weight: 700;
            letter-spacing: 0.06em;
            margin-top: 10px;
        }

        .cat-hero-desc {
            color: var(--text-light);
            font-size: 1.0625rem;
            line-height: 1.8;
            max-width: 480px;
            margin-bottom: 32px;
        }

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

        .cat-hero-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }

        .cat-hero-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .cat-hero-float {
            position: absolute;
            left: 24px;
            bottom: 24px;
            background: rgba(15, 46, 36, 0.88);
            color: var(--warm-light);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            display: flex;
            flex-direction: column;
            backdrop-filter: blur(6px);
            border-left: 3px solid var(--accent);
        }

        .cat-hero-float span {
            font-size: 0.8125rem;
            opacity: 0.85;
        }

        .cat-hero-float strong {
            font-size: 1.5rem;
            color: var(--accent);
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        @media (max-width: 767.98px) {
            .cat-hero {
                padding: 48px 0 56px;
            }
            .cat-hero-image img {
                height: 260px;
            }
            .cat-hero-float {
                left: 16px;
                bottom: 16px;
                padding: 12px 16px;
            }
        }

        /* ===== 区块标题 ===== */
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(194, 154, 100, 0.12);
            border: 1px solid rgba(194, 154, 100, 0.25);
            color: var(--accent);
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            font-weight: 700;
            color: var(--primary);
            line-height: 1.25;
            text-wrap: balance;
            margin-bottom: 16px;
        }

        .section-head p {
            color: var(--text-light);
            font-size: 1.0625rem;
            margin: 0;
        }

        /* ===== 页面区块间距 ===== */
        .content-section,
        .scenario-section,
        .process-section,
        .faq-section,
        .cta-section {
            padding: var(--space-section) 0;
        }

        @media (max-width: 767.98px) {

            .content-section,
            .scenario-section,
            .process-section,
            .faq-section,
            .cta-section {
                padding: 64px 0;
            }
        }

        /* ===== 内容卡片矩阵 ===== */
        .guide-card {
            border-radius: var(--radius-md);
            background: var(--white);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            height: 100%;
            border: 1px solid rgba(15, 46, 36, 0.04);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .guide-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--border);
        }

        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.02em;
        }

        .guide-card-body {
            padding: 24px;
        }

        .guide-card-body h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .guide-card-body p {
            color: var(--text-light);
            font-size: 0.9375rem;
            margin: 0;
            line-height: 1.7;
        }

        /* ===== 适用场景卡片 ===== */
        .scenario-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(15, 46, 36, 0.04);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .scenario-card.dark {
            background: var(--primary);
            color: var(--warm-light);
        }

        .scenario-card.dark h3 {
            color: var(--warm-light);
        }

        .scenario-card.dark p {
            color: rgba(244, 241, 234, 0.72);
        }

        .scenario-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: rgba(194, 154, 100, 0.15);
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.125rem;
            margin-bottom: 20px;
        }

        .dark .scenario-icon {
            background: rgba(194, 154, 100, 0.22);
        }

        .scenario-card h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .scenario-card p {
            color: var(--text-light);
            font-size: 0.9375rem;
            margin: 0;
            line-height: 1.75;
        }

        /* ===== 服务流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        @media (max-width: 991.98px) {
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .process-grid {
                grid-template-columns: 1fr;
            }
        }

        .process-step {
            padding: 32px;
            border-radius: var(--radius-lg);
            background: var(--white);
            border: 1px solid rgba(15, 46, 36, 0.05);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

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

        .step-num {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 2.25rem;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px var(--accent);
            line-height: 1;
            font-family: "DIN Alternate", "Roboto Condensed", sans-serif;
        }

        .process-step h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
            padding-right: 40px;
        }

        .process-step p {
            color: var(--text-light);
            font-size: 0.9375rem;
            margin: 0;
        }

        /* ===== 数据统计区 ===== */
        .stats-section {
            background: var(--primary);
            padding: 72px 0;
            color: var(--warm-light);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        @media (max-width: 767.98px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px 20px;
            }
        }

        .stat-item strong {
            display: block;
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 8px;
            font-family: "DIN Alternate", "Roboto Condensed", sans-serif;
            letter-spacing: 0.02em;
        }

        .stat-item span {
            font-size: 0.9375rem;
            color: rgba(244, 241, 234, 0.75);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-button {
            font-weight: 600;
            color: var(--text);
            background: var(--white);
            padding: 18px 24px;
            font-size: 1rem;
            box-shadow: none;
            border: none;
            transition: background 0.25s ease, color 0.25s ease;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--bg);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(194, 154, 100, 0.3);
        }

        .accordion-button::after {
            background-image: none;
            content: "+";
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--accent);
            transform: none;
            font-family: inherit;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            transition: transform 0.25s ease;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }

        .accordion-body {
            border-left: 2px solid var(--accent);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 0.9375rem;
            padding: 16px 24px 20px;
        }

        /* ===== CTA区 ===== */
        .cta-section {
            background: var(--white);
            border-top: 1px solid var(--border);
        }

        .cta-inner {
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            font-weight: 700;
            color: var(--primary);
            text-wrap: balance;
            margin-bottom: 12px;
        }

        .cta-inner p {
            color: var(--text-light);
            font-size: 1.0625rem;
            margin-bottom: 32px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 14px;
        }

        .cta-note {
            display: block;
            font-size: 0.75rem;
            color: var(--text-light);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(244, 241, 234, 0.8);
            padding: 72px 0 32px;
        }

        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 64px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand h3 {
            color: var(--warm-light);
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .footer-brand h3 span {
            color: var(--accent);
        }

        .footer-brand p {
            color: rgba(244, 241, 234, 0.6);
            font-size: 0.9375rem;
            margin: 12px 0 0;
            max-width: 360px;
            line-height: 1.7;
        }

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

        .footer-link-group h4 {
            color: var(--warm-light);
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-link-group a {
            display: block;
            color: rgba(244, 241, 234, 0.65);
            font-size: 0.875rem;
            padding: 5px 0;
            transition: color 0.25s ease;
        }

        .footer-link-group a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            color: rgba(244, 241, 234, 0.4);
            font-size: 0.8125rem;
        }

        @media (max-width: 767.98px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-links {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer {
                padding: 48px 0 24px;
            }
        }

        /* ===== 入场动效 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: none;
        }

        .reduce-motion *,
        .reduce-motion *::before,
        .reduce-motion *::after {
            transition: none !important;
            animation: none !important;
            opacity: 1 !important;
            transform: none !important;
        }

/* roulang page: category2 */
:root {
            --primary: #0F2E24;
            --primary-dark: #132A20;
            --accent: #C29A64;
            --accent-light: #D4AF7A;
            --bg-warm: #F6F3EE;
            --bg-white: #FFFFFF;
            --text-main: #1F2937;
            --text-secondary: #6B7280;
            --text-on-dark: #F4F1EA;
            --border-soft: #E8E2D9;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(15, 46, 36, 0.06);
            --shadow-md: 0 12px 24px rgba(15, 46, 36, 0.12);
            --transition: 0.25s ease;
            --font-main: 'PingFang SC', 'HarmonyOS Sans', 'Source Han Sans SC', 'Microsoft YaHei', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background-color: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .page-shell {
            display: flex;
            min-height: 100vh;
        }

        /* ===== 左侧竖向导航 ===== */
        .side-nav {
            width: 88px;
            background: var(--primary-dark);
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 28px 0 20px;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            z-index: 1050;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .side-nav-brand {
            margin-bottom: 40px;
            text-align: center;
        }

        .side-nav-brand a {
            display: flex;
            flex-direction: column;
            align-items: center;
            color: var(--text-on-dark);
            font-size: 14px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.08em;
            text-decoration: none;
        }

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

        .side-nav-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
            width: 100%;
            padding: 0 8px;
        }

        .side-nav-links a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 14px 4px;
            color: rgba(244, 241, 234, 0.65);
            font-size: 12px;
            font-weight: 500;
            text-decoration: none;
            border-left: 3px solid transparent;
            transition: all var(--transition);
            border-radius: 0 10px 10px 0;
        }

        .side-nav-links a i {
            font-size: 18px;
            transition: all var(--transition);
        }

        .side-nav-links a:hover {
            color: var(--text-on-dark);
            background: rgba(255, 255, 255, 0.06);
        }

        .side-nav-links a.active {
            color: var(--accent);
            border-left-color: var(--accent);
            background: rgba(194, 154, 100, 0.12);
        }

        .side-nav-links a.active i {
            transform: scale(1.1);
        }

        .side-nav-foot {
            margin-top: auto;
            color: rgba(244, 241, 234, 0.35);
            font-size: 11px;
            writing-mode: vertical-rl;
            letter-spacing: 0.2em;
        }

        /* ===== 移动端导航 ===== */
        .mobile-header {
            display: none;
            position: sticky;
            top: 0;
            z-index: 1040;
            background: var(--bg-white);
            padding: 10px 20px;
            border-bottom: 1px solid var(--border-soft);
            box-shadow: 0 2px 12px rgba(15, 46, 36, 0.06);
        }

        .mobile-header .mobile-brand {
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .mobile-header .mobile-brand span {
            color: var(--accent);
        }

        .mobile-toggle {
            background: none;
            border: none;
            font-size: 22px;
            color: var(--primary);
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            transition: background var(--transition);
        }

        .mobile-toggle:hover {
            background: rgba(15, 46, 36, 0.06);
        }

        .mobile-toggle:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--primary-dark);
            z-index: 1060;
            padding: 24px 32px;
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
            overflow-y: auto;
        }

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

        .mobile-menu .mobile-menu-header {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 32px;
        }

        .mobile-menu .mobile-menu-header a {
            color: var(--text-on-dark);
            font-size: 20px;
            font-weight: 800;
            text-decoration: none;
        }

        .mobile-menu .mobile-menu-header a span {
            color: var(--accent);
        }

        .mobile-menu .mobile-menu-close {
            background: none;
            border: none;
            color: var(--text-on-dark);
            font-size: 24px;
            width: 44px;
            height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            cursor: pointer;
        }

        .mobile-menu .mobile-menu-close:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-menu a.mobile-menu-link {
            color: rgba(244, 241, 234, 0.75);
            font-size: 22px;
            font-weight: 600;
            padding: 14px 8px;
            width: 100%;
            border-left: 3px solid transparent;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 16px;
            border-radius: 0 12px 12px 0;
        }

        .mobile-menu a.mobile-menu-link i {
            font-size: 20px;
            width: 28px;
            text-align: center;
        }

        .mobile-menu a.mobile-menu-link.active {
            color: var(--accent);
            border-left-color: var(--accent);
            background: rgba(194, 154, 100, 0.1);
        }

        .mobile-menu .mobile-download-btn {
            margin-top: 32px;
            width: 100%;
            height: 52px;
            background: var(--accent);
            border: none;
            border-radius: 999px;
            color: var(--primary-dark);
            font-size: 16px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .mobile-menu .mobile-download-btn:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
        }

        /* ===== 主内容 ===== */
        .main-content {
            margin-left: 88px;
            width: calc(100% - 88px);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 页面Banner ===== */
        .page-banner {
            position: relative;
            padding: 96px 0 88px;
            background-size: cover;
            background-position: center;
            background-color: var(--primary-dark);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(15, 46, 36, 0.92) 0%, rgba(15, 46, 36, 0.72) 50%, rgba(15, 46, 36, 0.45) 100%);
            z-index: 0;
        }

        .page-banner .banner-content {
            position: relative;
            z-index: 1;
            max-width: 760px;
        }

        .page-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(194, 154, 100, 0.18);
            border: 1px solid rgba(194, 154, 100, 0.4);
            color: var(--accent-light);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: 0.04em;
        }

        .page-banner h1 {
            font-size: clamp(2rem, 4vw, 3.25rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-on-dark);
            margin-bottom: 20px;
            letter-spacing: -0.02em;
            text-wrap: balance;
        }

        .page-banner h1 span {
            color: var(--accent);
        }

        .page-banner .banner-desc {
            font-size: 1.0625rem;
            color: rgba(244, 241, 234, 0.85);
            max-width: 620px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .page-banner .banner-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            height: 52px;
            padding: 0 32px;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 16px;
            font-weight: 700;
            border: none;
            border-radius: 999px;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(194, 154, 100, 0.3);
        }

        .btn-primary-custom:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(194, 154, 100, 0.4);
        }

        .btn-primary-custom:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(194, 154, 100, 0.3);
        }

        .btn-primary-custom:focus {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            height: 52px;
            padding: 0 32px;
            background: transparent;
            color: var(--text-on-dark);
            font-size: 16px;
            font-weight: 600;
            border: 1.5px solid rgba(244, 241, 234, 0.5);
            border-radius: 999px;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }

        .btn-outline-custom:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(194, 154, 100, 0.08);
        }

        .btn-outline-custom:focus {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        /* ===== 区块标题 ===== */
        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.375rem);
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            text-wrap: balance;
        }

        .section-subtitle {
            font-size: 1.0625rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }

        .section-gap {
            padding: 88px 0;
        }

        /* ===== 左文右图介绍区 ===== */
        .intro-section {
            background: var(--bg-white);
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 64px;
            align-items: center;
        }

        .intro-text .section-title {
            margin-bottom: 20px;
        }

        .intro-text p {
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 20px;
            font-size: 1.02rem;
        }

        .intro-text .lead-text {
            color: var(--text-main);
            font-size: 1.1rem;
            font-weight: 500;
            line-height: 1.8;
        }

        .intro-text ul {
            list-style: none;
            margin: 24px 0 0;
            padding: 0;
        }

        .intro-text ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            color: var(--text-main);
            font-size: 0.95rem;
        }

        .intro-text ul li i {
            color: var(--accent);
            margin-top: 5px;
            font-size: 14px;
        }

        .intro-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }

        .intro-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(15, 46, 36, 0.3));
            pointer-events: none;
        }

        /* ===== 卡片矩阵 ===== */
        .matrix-section {
            background: var(--bg-warm);
        }

        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 44px;
        }

        .matrix-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid rgba(15, 46, 36, 0.04);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

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

        .matrix-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(194, 154, 100, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .matrix-card h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .matrix-card p {
            font-size: 0.925rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .matrix-card .card-tag {
            display: inline-block;
            background: rgba(15, 46, 36, 0.06);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            align-self: flex-start;
        }

        .matrix-card:nth-child(2n) .card-icon {
            background: rgba(15, 46, 36, 0.1);
            color: var(--primary);
        }

        /* ===== 学习路径 ===== */
        .path-section {
            background: var(--primary-dark);
            color: var(--text-on-dark);
        }

        .path-section .section-title {
            color: var(--text-on-dark);
        }

        .path-section .section-subtitle {
            color: rgba(244, 241, 234, 0.7);
        }

        .path-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 48px;
        }

        .path-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: center;
            transition: all var(--transition);
        }

        .path-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
            border-color: rgba(194, 154, 100, 0.4);
        }

        .path-item .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .path-item h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-on-dark);
        }

        .path-item p {
            font-size: 0.95rem;
            color: rgba(244, 241, 234, 0.7);
            line-height: 1.7;
        }

        /* ===== 统计区 ===== */
        .stats-section {
            background: var(--bg-white);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 44px;
        }

        .stats-item {
            text-align: center;
            padding: 36px 20px;
            background: var(--bg-warm);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent);
            transition: all var(--transition);
        }

        .stats-item:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }

        .stats-item .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            font-family: 'DIN Alternate', 'Roboto Condensed', sans-serif;
            font-feature-settings: 'tnum';
        }

        .stats-item .stat-label {
            font-size: 0.925rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-warm);
        }

        .faq-accordion {
            margin-top: 44px;
            max-width: 860px;
            margin-left: auto;
            margin-right: auto;
        }

        .faq-accordion .accordion-item {
            background: var(--bg-white);
            border: 1px solid rgba(15, 46, 36, 0.06);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            background: var(--bg-white);
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            transition: all var(--transition);
        }

        .faq-accordion .accordion-button::after {
            width: 20px;
            height: 20px;
            background-size: 20px;
            transition: transform 0.3s ease;
            filter: brightness(0.4);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--bg-warm);
            color: var(--primary);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(194, 154, 100, 0.5);
            border-radius: var(--radius-md);
        }

        .faq-accordion .accordion-body {
            padding: 8px 24px 24px;
            color: var(--text-secondary);
            line-height: 1.75;
            font-size: 0.95rem;
            border-left: 3px solid var(--accent);
            margin: 0 16px 16px;
            background: var(--bg-warm);
            border-radius: 0 10px 10px 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover;
            opacity: 0.15;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 24px 0;
        }

        .cta-content h2 {
            font-size: clamp(1.75rem, 3.5vw, 2.75rem);
            font-weight: 700;
            color: var(--text-on-dark);
            margin-bottom: 16px;
            text-wrap: balance;
        }

        .cta-content p {
            font-size: 1.0625rem;
            color: rgba(244, 241, 234, 0.8);
            max-width: 560px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
        }

        .cta-security {
            font-size: 12px;
            color: rgba(244, 241, 234, 0.5);
            margin-top: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .cta-security i {
            color: var(--accent);
            font-size: 14px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            padding: 56px 0 32px;
            margin-top: auto;
        }

        .footer-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 28px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-on-dark);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .footer-brand h3 span {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 0.925rem;
            color: rgba(244, 241, 234, 0.65);
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-link-group h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-on-dark);
            margin-bottom: 14px;
            letter-spacing: 0.06em;
            text-transform: uppercase;
        }

        .footer-link-group a {
            display: block;
            font-size: 0.925rem;
            color: rgba(244, 241, 234, 0.6);
            padding: 5px 0;
            text-decoration: none;
            transition: all var(--transition);
        }

        .footer-link-group a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 12px;
            color: rgba(244, 241, 234, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991.98px) {
            .side-nav {
                width: 72px;
            }

            .side-nav-links a {
                font-size: 11px;
                padding: 12px 2px;
            }

            .side-nav-links a i {
                font-size: 17px;
            }

            .main-content {
                margin-left: 72px;
                width: calc(100% - 72px);
            }

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

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

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 767.98px) {
            .side-nav {
                display: none;
            }

            .mobile-header {
                display: flex;
                justify-content: space-between;
                align-items: center;
                height: 60px;
            }

            .main-content {
                margin-left: 0;
                width: 100%;
            }

            .page-banner {
                padding: 64px 0 56px;
            }

            .section-gap {
                padding: 64px 0;
            }

            .matrix-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .path-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stats-item {
                padding: 24px 16px;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .banner-cta {
                flex-direction: column;
                align-items: stretch;
            }

            .banner-cta .btn-primary-custom,
            .banner-cta .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-buttons .btn-primary-custom,
            .cta-buttons .btn-outline-custom {
                width: 100%;
                justify-content: center;
            }

            .container-custom {
                padding: 0 20px;
            }
        }

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

            .page-banner h1 {
                font-size: 1.75rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .matrix-card {
                padding: 22px;
            }
        }

        /* ===== 动效 ===== */
        @media (prefers-reduced-motion: no-preference) {
            .page-banner .banner-content {
                animation: fadeInUp 0.6s ease both;
            }

            .matrix-card:nth-child(1) { animation: fadeInUp 0.5s ease 0.1s both; }
            .matrix-card:nth-child(2) { animation: fadeInUp 0.5s ease 0.18s both; }
            .matrix-card:nth-child(3) { animation: fadeInUp 0.5s ease 0.26s both; }
            .matrix-card:nth-child(4) { animation: fadeInUp 0.5s ease 0.34s both; }
            .matrix-card:nth-child(5) { animation: fadeInUp 0.5s ease 0.42s both; }
            .matrix-card:nth-child(6) { animation: fadeInUp 0.5s ease 0.5s both; }

            @keyframes fadeInUp {
                from {
                    opacity: 0;
                    transform: translateY(16px);
                }
                to {
                    opacity: 1;
                    transform: translateY(0);
                }
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }

            html {
                scroll-behavior: auto;
            }
        }