/* roulang page: index */
:root {
            --brand: #A8863B;
            --brand-dark: #8C6F2F;
            --bg: #F7F4EF;
            --ink: #1E1C19;
            --ink-soft: #5C574E;
            --line: #E5DFD4;
            --dark: #171712;
            --white: #F9F7F2;
            --accent: #2F6B5F;
            --radius-sm: 4px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(30,28,25,0.06);
            --shadow-hover: 0 10px 30px rgba(30,28,25,0.10);
            --transition: all .25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background-color: var(--bg);
            color: var(--ink);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--ink);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--brand);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section-padding {
            padding: 96px 0;
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 40px;
            position: relative;
            padding-left: 16px;
            letter-spacing: 1px;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            width: 3px;
            height: 26px;
            background: var(--brand);
            border-radius: 2px;
        }
        .text-soft {
            color: var(--ink-soft);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(247, 244, 239, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
            transition: var(--transition);
        }
        .site-header .top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 16px;
        }
        .logo-text {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--ink);
            white-space: nowrap;
        }
        .logo-text .dot {
            color: var(--brand);
            margin: 0 2px;
        }
        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hot-keywords {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--ink-soft);
        }
        .hot-keywords a {
            color: var(--ink-soft);
            border-bottom: 1px solid transparent;
        }
        .hot-keywords a:hover {
            color: var(--brand);
            border-bottom-color: var(--brand);
        }
        .header-search {
            display: flex;
            align-items: center;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 20px;
            padding: 4px 12px;
            gap: 6px;
        }
        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            width: 90px;
            color: var(--ink);
        }
        .header-search i {
            color: var(--ink-soft);
            font-size: 14px;
        }
        .nav-row {
            border-top: 1px solid var(--line);
            padding: 0;
        }
        .nav-row .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0;
        }
        .nav-links li a {
            display: block;
            padding: 12px 18px;
            font-size: 15px;
            font-weight: 400;
            color: var(--ink);
            border-bottom: 2px solid transparent;
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--brand);
        }
        .nav-links li.active a {
            font-weight: 700;
            color: var(--brand);
            border-bottom-color: var(--brand);
        }
        .nav-download-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--brand);
            color: var(--ink);
            font-size: 14px;
            font-weight: 700;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--brand);
        }
        .nav-download-btn:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            color: var(--ink);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168, 134, 59, 0.25);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--ink);
            cursor: pointer;
            line-height: 1;
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 280px;
            height: 100vh;
            background: var(--bg);
            z-index: 1050;
            padding: 24px;
            box-shadow: -8px 0 30px rgba(0,0,0,0.12);
            transition: right .3s ease;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer .drawer-close {
            background: none;
            border: none;
            font-size: 20px;
            color: var(--ink);
            cursor: pointer;
            float: right;
        }
        .mobile-drawer ul {
            list-style: none;
            padding: 0;
            margin: 40px 0 0 0;
        }
        .mobile-drawer ul li a {
            display: block;
            padding: 14px 0;
            font-size: 17px;
            font-weight: 600;
            border-bottom: 1px solid var(--line);
        }
        .mobile-drawer ul li.active a {
            color: var(--brand);
        }
        .drawer-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.4);
            z-index: 1045;
        }

        /* ===== Hero ===== */
        .hero {
            background: var(--dark);
            color: var(--white);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(rgba(23, 23, 18, 0.6), rgba(23, 23, 18, 0.75)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
        }
        .hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            display: grid;
            grid-template-columns: 55% 45%;
            gap: 40px;
            align-items: center;
        }
        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 1px;
            margin: 0 0 16px;
            color: var(--white);
        }
        .hero h1 .gold {
            color: var(--brand);
        }
        .hero-sub {
            font-size: 17px;
            color: rgba(255,255,255,0.75);
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--brand);
            color: var(--ink);
            font-size: 15px;
            font-weight: 700;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            border: 2px solid var(--brand);
            cursor: pointer;
            transition: var(--transition);
            height: 46px;
            line-height: 1;
        }
        .btn-main:hover {
            background: var(--brand-dark);
            border-color: var(--brand-dark);
            color: var(--ink);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168, 134, 59, 0.25);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--white);
            font-size: 15px;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255,255,255,0.6);
            cursor: pointer;
            transition: var(--transition);
            height: 46px;
        }
        .btn-ghost:hover {
            border-color: var(--brand);
            color: var(--brand);
        }
        .hero-note {
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }
        .hero-note i {
            color: var(--brand);
            margin-right: 4px;
        }
        .hero-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(255,255,255,0.15);
            background: rgba(255,255,255,0.05);
            box-shadow: 0 20px 50px rgba(0,0,0,0.3);
        }
        .hero-visual img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }

        /* ===== 功能亮点条 ===== */
        .feature-strip {
            background: var(--bg);
            padding: 40px 0;
            border-bottom: 1px solid var(--line);
        }
        .feature-strip-inner {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
        }
        .feature-item {
            text-align: center;
            padding: 16px 20px;
            border-right: 1px solid var(--line);
            transition: var(--transition);
        }
        .feature-item:last-child {
            border-right: none;
        }
        .feature-item .icon {
            font-size: 28px;
            color: var(--brand);
            margin-bottom: 8px;
            display: block;
            transition: var(--transition);
        }
        .feature-item:hover .icon {
            transform: translateY(-4px);
        }
        .feature-item .text {
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
        }
        .feature-item .desc {
            font-size: 13px;
            color: var(--ink-soft);
            margin-top: 2px;
        }

        /* ===== 轮播 ===== */
        .screenshot-section {
            background: var(--bg);
            padding: 96px 0;
        }
        .carousel-custom {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--dark);
            padding: 0;
            position: relative;
        }
        .carousel-custom .carousel-item {
            position: relative;
        }
        .carousel-custom .carousel-item img {
            width: 100%;
            height: 520px;
            object-fit: cover;
        }
        .carousel-custom .carousel-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0,0,0,0.7));
            padding: 40px 24px 24px;
            text-align: center;
            color: var(--white);
        }
        .carousel-custom .carousel-caption .caption-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .carousel-custom .carousel-caption .caption-text {
            font-size: 14px;
            color: rgba(255,255,255,0.75);
        }
        .carousel-custom .carousel-control-prev,
        .carousel-custom .carousel-control-next {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            border: 1px solid rgba(255,255,255,0.4);
            background: rgba(255,255,255,0.1);
            top: 50%;
            transform: translateY(-50%);
            bottom: auto;
            opacity: 0.8;
        }
        .carousel-custom .carousel-control-prev {
            left: 20px;
        }
        .carousel-custom .carousel-control-next {
            right: 20px;
        }
        .carousel-custom .carousel-indicators {
            bottom: 80px;
        }
        .carousel-custom .carousel-indicators [data-bs-target] {
            width: 6px;
            height: 6px;
            border-radius: 3px;
            background: rgba(255,255,255,0.5);
            border: none;
            transition: var(--transition);
        }
        .carousel-custom .carousel-indicators .active {
            width: 20px;
            background: var(--brand);
        }

        /* ===== 系统要求 ===== */
        .requirements-section {
            background: var(--dark);
            color: var(--white);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }
        .requirements-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(rgba(23, 23, 18, 0.7), rgba(23, 23, 18, 0.8)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
        }
        .requirements-section .container-custom {
            position: relative;
            z-index: 2;
        }
        .requirements-section .section-title {
            color: var(--white);
        }
        .requirements-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .req-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .req-list li {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .req-list li:last-child {
            border-bottom: none;
        }
        .req-list .req-icon {
            font-size: 18px;
            color: var(--brand);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .req-list .req-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 2px;
        }
        .req-list .req-desc {
            font-size: 13px;
            color: rgba(255,255,255,0.55);
            line-height: 1.6;
        }
        .req-info {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-lg);
            padding: 32px;
        }
        .req-info h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 16px;
        }
        .req-info p {
            font-size: 14px;
            color: rgba(255,255,255,0.65);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .req-info .badge-custom {
            display: inline-block;
            background: rgba(47, 107, 95, 0.3);
            border: 1px solid var(--accent);
            color: rgba(255,255,255,0.9);
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 20px;
            margin: 6px 6px 0 0;
        }

        /* ===== 评价墙 ===== */
        .reviews-section {
            background: #F0ECE3;
            padding: 96px 0;
        }
        .reviews-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .review-col {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .review-col.offset {
            margin-top: 24px;
        }
        .review-item .stars {
            display: flex;
            gap: 2px;
            color: var(--brand);
            font-size: 16px;
            margin-bottom: 10px;
        }
        .review-item .text {
            font-size: 15px;
            line-height: 1.7;
            color: var(--ink);
            margin-bottom: 8px;
        }
        .review-item .meta {
            font-size: 13px;
            color: var(--ink-soft);
        }

        /* ===== 下载按钮组 ===== */
        .download-section {
            background: var(--bg);
            padding: 96px 0;
            text-align: center;
        }
        .download-wrap {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }
        .download-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .qr-block {
            text-align: center;
        }
        .qr-block .qr-box {
            width: 96px;
            height: 96px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 8px;
        }
        .qr-block .qr-box i {
            font-size: 40px;
            color: var(--ink-soft);
        }
        .qr-block .qr-label {
            font-size: 13px;
            color: var(--ink-soft);
        }

        /* ===== 资讯列表 ===== */
        .news-section {
            background: var(--bg);
            padding: 96px 0;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--line);
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .news-card .cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: #eee;
        }
        .news-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .news-card:hover .cover img {
            transform: scale(1.03);
        }
        .news-card .content {
            padding: 20px 24px;
        }
        .news-card .tag {
            display: inline-block;
            font-size: 12px;
            color: var(--brand);
            border: 1px solid var(--brand);
            border-radius: var(--radius-sm);
            padding: 2px 10px;
            margin-bottom: 10px;
        }
        .news-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin: 0 0 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 54px;
        }
        .news-card .summary {
            font-size: 14px;
            color: var(--ink-soft);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 44px;
            margin-bottom: 12px;
        }
        .news-card .meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--ink-soft);
            border-top: 1px solid var(--line);
            padding-top: 12px;
        }
        .news-card .meta a {
            color: var(--brand);
            font-weight: 600;
        }
        .news-empty {
            grid-column: 1 / -1;
            border: 2px dashed var(--line);
            border-radius: var(--radius-md);
            padding: 48px;
            text-align: center;
            color: var(--ink-soft);
            font-size: 15px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
            padding: 96px 0;
        }
        .accordion-custom {
            max-width: 860px;
            margin: 0 auto;
        }
        .accordion-custom .accordion-item {
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--line);
            border-radius: 0;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            padding: 20px 0;
            box-shadow: none;
            border: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: none;
            outline: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--brand);
            background: transparent;
            box-shadow: none;
        }
        .accordion-custom .accordion-button::after {
            content: '+';
            background-image: none;
            font-size: 22px;
            font-weight: 400;
            color: var(--brand);
            width: auto;
            height: auto;
            transform: rotate(0deg);
            transition: transform .3s ease;
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }
        .accordion-custom .accordion-body {
            padding: 0 0 20px;
            font-size: 14px;
            color: var(--ink-soft);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--dark);
            color: var(--white);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(23,23,18,0.8), rgba(23,23,18,0.4)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 0 0 8px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.7);
            font-size: 15px;
            margin: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 24px;
        }
        .footer-top {
            display: flex;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .footer-brand .logo-text {
            color: var(--white);
            font-size: 20px;
            margin-bottom: 8px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255,255,255,0.5);
            max-width: 360px;
        }
        .footer-links {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
        }
        .footer-links .col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 12px;
        }
        .footer-links .col a {
            display: block;
            font-size: 13px;
            color: rgba(255,255,255,0.55);
            padding: 4px 0;
        }
        .footer-links .col a:hover {
            color: var(--brand);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }

        /* ===== 响应式 ===== */
        @media (min-width: 992px) {
            .mobile-menu-toggle {
                display: none;
            }
        }
        @media (max-width: 991px) {
            .hero-content {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 36px;
            }
            .nav-links,
            .nav-download-btn {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .feature-strip-inner {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .feature-item {
                border-right: none;
                border-bottom: 1px solid var(--line);
                padding: 16px;
            }
            .requirements-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .review-col.offset {
                margin-top: 0;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .header-search {
                display: none;
            }
        }
        @media (max-width: 767px) {
            .section-padding {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
                padding-left: 12px;
            }
            .hero {
                padding: 60px 0;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-cta .btn-main,
            .hero-cta .btn-ghost {
                width: 100%;
                height: 50px;
            }
            .feature-strip-inner {
                grid-template-columns: 1fr 1fr;
            }
            .carousel-custom .carousel-item img {
                height: 280px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .download-wrap {
                flex-direction: column;
                gap: 24px;
            }
            .download-cta {
                width: 100%;
            }
            .download-cta .btn-main,
            .download-cta .btn-ghost {
                width: 100%;
            }
            .cta-section .container-custom {
                flex-direction: column;
                text-align: center;
            }
            .footer-top {
                flex-direction: column;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .hot-keywords {
                display: none;
            }
            .feature-strip-inner {
                grid-template-columns: 1fr;
            }
            .carousel-custom .carousel-caption .caption-title {
                font-size: 16px;
            }
        }

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

        /* Hero 入场动效 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-content {
            animation: fadeInUp .4s ease-out both;
        }

/* roulang page: article */
:root {
            --brand: #A8863B;
            --brand-dark: #8C6F2F;
            --bg: #F7F4EF;
            --ink: #1E1C19;
            --ink-soft: #5C574E;
            --line: #E5DFD4;
            --dark: #171712;
            --white: #F9F7F2;
            --accent: #2F6B5F;
            --radius-sm: 4px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(30,28,25,0.06);
            --shadow-hover: 0 10px 30px rgba(30,28,25,0.10);
            --transition: all .25s ease;
            --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        a:hover {
            color: var(--brand-dark);
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(247,244,239,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(247,244,239,0.98);
            box-shadow: 0 4px 20px rgba(30,28,25,0.06);
        }

        .top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0 8px;
            gap: 20px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 1px;
            color: var(--ink);
            text-decoration: none;
            white-space: nowrap;
        }

        .logo-text .dot {
            color: var(--brand);
            margin: 0 2px;
        }

        .logo-text:hover {
            color: var(--ink);
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .hot-keywords {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--ink-soft);
        }

        .hot-keywords span {
            color: var(--ink-soft);
        }

        .hot-keywords a {
            color: var(--ink-soft);
            text-decoration: none;
            transition: var(--transition);
        }

        .hot-keywords a:hover {
            color: var(--brand);
        }

        .header-search {
            display: flex;
            align-items: center;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 20px;
            padding: 6px 14px;
            gap: 8px;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(168,134,59,0.12);
        }

        .header-search i {
            font-size: 14px;
            color: var(--ink-soft);
        }

        .header-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            color: var(--ink);
            width: 120px;
        }

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

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--ink);
            cursor: pointer;
            padding: 4px;
        }

        .nav-row {
            border-top: 1px solid transparent;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 0;
        }

        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 28px;
        }

        .nav-links li a {
            display: block;
            padding: 6px 2px;
            font-size: 15px;
            color: var(--ink);
            text-decoration: none;
            position: relative;
            font-weight: 400;
            transition: var(--transition);
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--brand);
            transition: width .3s ease;
        }

        .nav-links li a:hover::after {
            width: 100%;
        }

        .nav-links li.active a {
            font-weight: 700;
            color: var(--brand);
            border-bottom: 2px solid var(--brand);
        }

        .nav-download-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--brand);
            color: var(--ink);
            font-size: 14px;
            font-weight: 700;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: var(--transition);
        }

        .nav-download-btn:hover {
            background: var(--brand-dark);
            color: var(--ink);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(168,134,59,0.25);
        }

        /* 移动端导航 */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg);
            z-index: 999;
            padding: 80px 24px 40px;
            overflow-y: auto;
        }

        .mobile-nav-overlay.open {
            display: block;
        }

        .mobile-nav-overlay .nav-links-m {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .mobile-nav-overlay .nav-links-m li {
            border-bottom: 1px solid var(--line);
        }

        .mobile-nav-overlay .nav-links-m li a {
            display: block;
            padding: 16px 4px;
            font-size: 18px;
            font-weight: 600;
            color: var(--ink);
            text-decoration: none;
        }

        .mobile-nav-overlay .nav-links-m li.active a {
            color: var(--brand);
            border-left: 3px solid var(--brand);
            padding-left: 14px;
        }

        .mobile-nav-overlay .mobile-search {
            display: flex;
            gap: 8px;
            margin-bottom: 24px;
        }

        .mobile-nav-overlay .mobile-search input {
            flex: 1;
            padding: 12px 14px;
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            font-size: 15px;
            background: #fff;
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            padding: 28px 0 0;
            font-size: 14px;
            color: var(--ink-soft);
        }

        .breadcrumb-wrap nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .breadcrumb-wrap a {
            color: var(--ink-soft);
            text-decoration: none;
            transition: var(--transition);
        }

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

        .breadcrumb-wrap .sep {
            color: var(--line);
            font-weight: 300;
        }

        .breadcrumb-wrap .current {
            color: var(--ink);
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== 文章头部 ========== */
        .article-hero {
            padding: 40px 0 24px;
        }

        .article-hero .container-custom {
            max-width: 760px;
        }

        .article-hero h1 {
            font-size: 40px;
            font-weight: 800;
            letter-spacing: 1px;
            line-height: 1.3;
            margin: 0 0 18px;
            color: var(--ink);
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 13px;
            color: var(--ink-soft);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--line);
        }

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

        .article-meta .meta-item i {
            font-size: 14px;
            color: var(--brand);
        }

        .article-meta .tag-badge {
            display: inline-block;
            padding: 2px 10px;
            border: 1px solid var(--brand);
            border-radius: var(--radius-sm);
            color: var(--brand);
            font-size: 12px;
            font-weight: 600;
            background: transparent;
        }

        /* ========== 正文区 ========== */
        .article-body {
            padding: 32px 0 80px;
        }

        .article-body .container-custom {
            max-width: 760px;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: var(--ink);
        }

        .article-content p {
            margin-bottom: 1.5em;
        }

        .article-content h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 1.8em 0 0.8em;
            padding-left: 12px;
            border-left: 3px solid var(--brand);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 700;
            margin: 1.6em 0 0.6em;
        }

        .article-content blockquote {
            margin: 1.5em 0;
            padding: 16px 20px;
            border-left: 3px solid var(--brand);
            background: rgba(168,134,59,0.06);
            color: var(--ink-soft);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.4em;
            margin-bottom: 1.5em;
        }

        .article-content li {
            margin-bottom: 0.5em;
        }

        .article-content a {
            color: var(--brand);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

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

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

        /* 未找到 */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            border: 2px dashed var(--line);
            border-radius: var(--radius-md);
            max-width: 760px;
            margin: 0 auto;
        }

        .not-found-box i {
            font-size: 52px;
            color: var(--line);
            display: block;
            margin-bottom: 20px;
        }

        .not-found-box h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--ink-soft);
            margin-bottom: 24px;
        }

        .not-found-box .btn-home {
            display: inline-block;
            background: var(--brand);
            color: var(--ink);
            font-weight: 700;
            padding: 10px 32px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: var(--transition);
        }

        .not-found-box .btn-home:hover {
            background: var(--brand-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168,134,59,0.25);
        }

        /* ========== 相关推荐 ========== */
        .related-posts {
            margin-top: 48px;
            padding-top: 40px;
            border-top: 1px solid var(--line);
        }

        .related-posts .section-title-wrap {
            margin-bottom: 24px;
        }

        .related-posts .section-title {
            font-size: 24px;
            font-weight: 700;
            margin: 0;
            position: relative;
            padding-left: 12px;
        }

        .related-posts .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 22px;
            background: var(--brand);
            border-radius: 2px;
        }

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

        .related-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .related-card .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

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

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

        .related-card .card-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .related-card .card-body h3 a {
            color: var(--ink);
            text-decoration: none;
            transition: var(--transition);
        }

        .related-card .card-body h3 a:hover {
            color: var(--brand);
        }

        .related-card .card-body p {
            font-size: 13px;
            color: var(--ink-soft);
            margin: 0 0 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .card-meta {
            font-size: 12px;
            color: var(--ink-soft);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: auto;
        }

        /* 返回按钮 */
        .article-footer-actions {
            margin-top: 36px;
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid var(--ink);
            border-radius: var(--radius-sm);
            color: var(--ink);
            background: transparent;
            text-decoration: none;
            transition: var(--transition);
        }

        .btn-back:hover {
            border-color: var(--brand);
            color: var(--brand);
            transform: translateY(-2px);
        }

        /* ========== 下载引导条 ========== */
        .article-download-bar {
            background: var(--dark);
            padding: 36px 0;
            border-radius: 0;
        }

        .article-download-bar .container-custom {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
            max-width: 1200px;
        }

        .article-download-bar p {
            margin: 0;
            color: var(--white);
            font-size: 17px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .article-download-bar p i {
            color: var(--brand);
            margin-right: 8px;
        }

        .btn-download-bar {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--white);
            color: var(--ink);
            font-weight: 700;
            font-size: 15px;
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: var(--transition);
            border: none;
        }

        .btn-download-bar:hover {
            background: var(--brand);
            color: var(--ink);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168,134,59,0.3);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--dark);
            color: rgba(249,247,242,0.7);
            padding: 60px 0 24px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-brand .logo-text {
            color: var(--white);
            font-size: 20px;
            font-weight: 800;
            display: block;
            margin-bottom: 12px;
        }

        .footer-brand .logo-text .dot {
            color: var(--brand);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(249,247,242,0.6);
            margin: 0;
        }

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

        .footer-links .col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--white);
            margin: 0 0 14px;
            letter-spacing: 0.5px;
        }

        .footer-links .col a {
            display: block;
            font-size: 14px;
            color: rgba(249,247,242,0.6);
            text-decoration: none;
            padding: 4px 0;
            transition: var(--transition);
        }

        .footer-links .col a:hover {
            color: var(--brand);
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(249,247,242,0.45);
            flex-wrap: wrap;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ========== 按钮通用 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary-custom {
            background: var(--brand);
            color: var(--ink);
            padding: 12px 28px;
            font-size: 15px;
            text-decoration: none;
        }

        .btn-primary-custom:hover {
            background: var(--brand-dark);
            color: var(--ink);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(168,134,59,0.25);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--ink);
            color: var(--ink);
            padding: 10px 24px;
            font-size: 14px;
            text-decoration: none;
        }

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

        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .top-row {
                padding: 12px 0 8px;
            }

            .hot-keywords {
                display: none;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .nav-row {
                display: none;
            }

            .article-hero h1 {
                font-size: 34px;
            }

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

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

        @media (max-width: 767px) {
            .container-custom {
                padding: 0 16px;
            }

            .top-row {
                padding: 10px 0 6px;
            }

            .logo-text {
                font-size: 18px;
            }

            .header-search input {
                width: 90px;
            }

            .breadcrumb-wrap {
                padding: 20px 0 0;
                font-size: 13px;
            }

            .breadcrumb-wrap .current {
                max-width: 160px;
            }

            .article-hero {
                padding: 24px 0 16px;
            }

            .article-hero h1 {
                font-size: 26px;
                line-height: 1.35;
                letter-spacing: 0.5px;
            }

            .article-meta {
                gap: 12px;
                font-size: 12px;
                padding-bottom: 16px;
            }

            .article-body {
                padding: 20px 0 56px;
            }

            .article-content h2 {
                font-size: 22px;
            }

            .article-content h3 {
                font-size: 18px;
            }

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

            .article-download-bar {
                padding: 28px 16px;
            }

            .article-download-bar .container-custom {
                gap: 16px;
                text-align: center;
            }

            .article-download-bar p {
                font-size: 15px;
            }

            .btn-download-bar {
                width: 100%;
                justify-content: center;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 28px;
            }

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

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

            .article-footer-actions {
                flex-direction: column;
                align-items: center;
            }

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

        @media (max-width: 520px) {
            .logo-text {
                font-size: 16px;
            }

            .header-search {
                display: none;
            }

            .header-tools {
                gap: 12px;
            }

            .mobile-menu-toggle {
                font-size: 22px;
            }

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

            .article-meta .meta-item {
                font-size: 12px;
            }

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

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

        @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{
    --brand:#A8863B;
    --brand-dark:#8C6F2F;
    --bg:#F7F4EF;
    --ink:#1E1C19;
    --ink-soft:#5C574E;
    --line:#E5DFD4;
    --dark:#171712;
    --white:#F9F7F2;
    --accent:#2F6B5F;
    --radius-sm:4px;
    --radius-md:12px;
    --radius-lg:16px;
    --shadow-sm:0 1px 3px rgba(30,28,25,0.06);
    --shadow-md:0 10px 30px rgba(30,28,25,0.10);
    --transition:all .25s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:15px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;transition:var(--transition)}
a:hover{color:var(--brand)}
img{max-width:100%;height:auto}
button{font-family:inherit}
::selection{background:rgba(168,134,59,0.2)}
.container-custom{max-width:1200px;margin:0 auto;padding:0 24px}
.btn-main{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:var(--brand);color:var(--ink);border:1px solid var(--brand);
    height:46px;padding:0 28px;font-size:15px;font-weight:700;border-radius:var(--radius-sm);
    transition:var(--transition);white-space:nowrap;letter-spacing:.5px;
}
.btn-main:hover{
    background:var(--brand-dark);border-color:var(--brand-dark);
    color:var(--ink);transform:translateY(-2px);
    box-shadow:0 6px 20px rgba(168,134,59,0.25);
}
.btn-main:active{transform:translateY(0);box-shadow:none}
.btn-main:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-ghost{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:transparent;color:var(--ink);border:1px solid var(--ink);
    height:46px;padding:0 28px;font-size:15px;font-weight:600;border-radius:var(--radius-sm);
    transition:var(--transition);white-space:nowrap;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-ghost:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-lg{height:52px;padding:0 36px;font-size:16px}
.btn-download-dark{
    background:var(--white);color:var(--ink);border:1px solid var(--white);
    height:48px;padding:0 32px;font-size:15px;font-weight:700;border-radius:var(--radius-sm);
    display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:var(--transition);
}
.btn-download-dark:hover{
    background:var(--brand);border-color:var(--brand);color:var(--ink);
    transform:translateY(-2px);box-shadow:0 6px 20px rgba(168,134,59,0.3);
}
/* ===== Header ===== */
.site-header{
    position:sticky;top:0;z-index:1000;
    background:rgba(247,244,239,0.95);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
    transition:var(--transition);
}
.site-header.scrolled{
    background:rgba(247,244,239,0.92);
    box-shadow:0 4px 20px rgba(30,28,25,0.06);
}
.top-row{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 0;gap:20px;
}
.logo-text{
    font-size:20px;font-weight:800;letter-spacing:1px;color:var(--ink);
    display:inline-flex;align-items:center;gap:2px;
}
.logo-text .dot{color:var(--brand);font-weight:800;margin:0 2px}
.header-tools{display:flex;align-items:center;gap:20px}
.hot-keywords{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft)}
.hot-keywords span{color:var(--ink-soft)}
.hot-keywords a{
    color:var(--ink-soft);padding:2px 8px;border:1px solid transparent;border-radius:20px;
    font-size:12px;transition:var(--transition);
}
.hot-keywords a:hover{color:var(--brand);border-color:var(--brand);background:rgba(168,134,59,0.06)}
.header-search{display:flex;align-items:center;gap:6px;position:relative}
.header-search i{color:var(--ink-soft);font-size:15px;position:absolute;left:12px;top:50%;transform:translateY(-50%)}
.header-search input{
    border:1px solid var(--line);border-radius:20px;background:var(--white);
    height:34px;padding:0 14px 0 36px;font-size:13px;color:var(--ink);
    width:190px;outline:none;transition:var(--transition);
}
.header-search input:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(168,134,59,0.15)}
.header-search input::placeholder{color:var(--ink-soft)}
.mobile-menu-toggle{
    display:none;background:none;border:none;font-size:24px;color:var(--ink);
    cursor:pointer;padding:4px;line-height:1;
}
.nav-row{border-top:1px solid var(--line)}
.nav-inner{
    display:flex;align-items:center;justify-content:space-between;
    height:50px;
}
.nav-links{
    display:flex;list-style:none;gap:32px;margin:0;padding:0;
    height:100%;
}
.nav-links li{
    display:flex;align-items:center;position:relative;
}
.nav-links a{
    font-size:15px;color:var(--ink);font-weight:500;padding:6px 0;
    position:relative;transition:var(--transition);
}
.nav-links a::after{
    content:'';position:absolute;left:0;bottom:-2px;width:0;height:2px;
    background:var(--brand);transition:width .25s ease;
}
.nav-links a:hover{color:var(--brand);text-decoration:none}
.nav-links a:hover::after{width:100%}
.nav-links li.active a{
    color:var(--brand);font-weight:700;
}
.nav-links li.active a::after{width:100%}
.nav-download-btn{
    display:inline-flex;align-items:center;gap:6px;
    background:var(--brand);color:var(--ink);border-radius:var(--radius-sm);
    height:34px;padding:0 16px;font-size:13px;font-weight:700;transition:var(--transition);
}
.nav-download-btn:hover{
    background:var(--brand-dark);color:var(--ink);transform:translateY(-1px);
    box-shadow:0 4px 12px rgba(168,134,59,0.3);
}
.mobile-menu{
    display:none;
    padding:16px 0 20px;
    border-top:1px solid var(--line);
    flex-direction:column;gap:4px;
}
.mobile-menu a{
    padding:12px 8px;font-size:15px;color:var(--ink);border-radius:var(--radius-sm);
    display:flex;align-items:center;gap:8px;transition:var(--transition);
}
.mobile-menu a:hover{background:rgba(168,134,59,0.08);color:var(--brand)}
.mobile-menu a.active{color:var(--brand);font-weight:700}
.mobile-menu .btn-main{
    margin-top:12px;width:100%;
}
.mobile-menu.open{display:flex}
/* ===== 分类 Hero ===== */
.cat-hero{
    position:relative;
    background:linear-gradient(135deg,rgba(23,23,18,0.85) 0%,rgba(23,23,18,0.62) 60%,rgba(23,23,18,0.4) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    padding:96px 0 80px;
    color:var(--white);
}
.cat-hero-content{max-width:680px}
.cat-badge{
    display:inline-block;background:rgba(168,134,59,0.2);
    border:1px solid rgba(168,134,59,0.6);color:var(--brand);
    font-size:13px;font-weight:600;padding:4px 16px;border-radius:20px;
    margin-bottom:20px;letter-spacing:1px;
}
.cat-hero h1{
    font-size:46px;font-weight:800;line-height:1.3;letter-spacing:1px;
    margin-bottom:16px;color:var(--white);
}
.cat-hero h1 span{color:var(--brand)}
.cat-hero .lead{
    font-size:17px;line-height:1.7;color:rgba(249,247,242,0.85);
    margin-bottom:0;max-width:580px;
}
.hero-actions{
    display:flex;gap:16px;margin-top:32px;flex-wrap:wrap;
}
.hero-actions .btn-ghost{
    border-color:rgba(249,247,242,0.7);color:var(--white);
}
.hero-actions .btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.hero-meta{
    display:flex;align-items:center;gap:24px;margin-top:28px;
    font-size:13px;color:rgba(249,247,242,0.6);
}
.hero-meta i{color:var(--brand)}
/* ===== 功能亮点条 ===== */
.features-strip{
    background:var(--bg);
    border-bottom:1px solid var(--line);
    padding:48px 0;
}
.features-strip .row{gap:20px 0}
.feature-item{
    padding:8px 28px;
    border-right:1px solid var(--line);
    text-align:center;
}
.feature-item:last-child{border-right:none}
.feature-item i{
    font-size:30px;color:var(--brand);display:block;
    margin-bottom:10px;transition:var(--transition);
}
.feature-item:hover i{transform:translateY(-4px)}
.feature-item h3{font-size:16px;font-weight:700;margin-bottom:4px;color:var(--ink)}
.feature-item p{font-size:13px;color:var(--ink-soft);margin:0;line-height:1.6}
/* ===== 通用 section ===== */
.section-heading{
    margin-bottom:40px;
}
.section-heading h2{
    font-size:30px;font-weight:700;line-height:1.4;color:var(--ink);
    padding-left:14px;position:relative;margin-bottom:12px;
}
.section-heading h2::before{
    content:'';position:absolute;left:0;top:8px;bottom:8px;width:3px;
    background:var(--brand);border-radius:2px;
}
.section-heading p{
    font-size:15px;color:var(--ink-soft);max-width:640px;margin:0;
    line-height:1.75;
}
/* ===== 图文内容区 ===== */
.guide-section{padding:96px 0}
.guide-section .img-wrap{
    border-radius:var(--radius-lg);overflow:hidden;
    box-shadow:var(--shadow-md);position:relative;
}
.guide-section .img-wrap img{
    width:100%;height:360px;object-fit:cover;display:block;
    transition:transform .5s ease;
}
.guide-section .img-wrap:hover img{transform:scale(1.02)}
.guide-list{
    list-style:none;padding:0;margin:20px 0 0;
}
.guide-list li{
    padding:12px 0 12px 36px;position:relative;
    font-size:15px;color:var(--ink);border-bottom:1px solid var(--line);
}
.guide-list li:last-child{border-bottom:none}
.guide-list li::before{
    content:'\F26A';font-family:'bootstrap-icons';
    position:absolute;left:0;top:12px;color:var(--brand);font-size:16px;
}
/* ===== 流程 ===== */
.process-section{
    background:var(--dark);color:var(--white);padding:96px 0;
}
.process-section .section-heading h2{color:var(--white)}
.process-section .section-heading p{color:rgba(249,247,242,0.7)}
.process-section .section-heading h2::before{background:var(--brand)}
.process-steps{gap:32px 0}
.step-item{
    padding:0 8px;position:relative;
}
.step-num{
    display:inline-block;
    font-size:38px;font-weight:800;color:var(--brand);
    line-height:1;margin-bottom:12px;
    font-variant-numeric:tabular-nums;
    opacity:.75;
}
.step-item::after{
    content:'';position:absolute;right:8%;top:12px;width:60%;height:1px;
    background:rgba(255,255,255,0.1);
}
.step-item:last-child::after{display:none}
.step-item h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--white)}
.step-item p{font-size:14px;color:rgba(249,247,242,0.6);margin:0;line-height:1.6}
/* ===== FAQ ===== */
.faq-section{padding:96px 0}
.custom-accordion{
    max-width:820px;margin:0 auto;
}
.custom-accordion .accordion-item{
    background:transparent;border:none;
    border-bottom:1px solid var(--line);
    border-radius:0 !important;
}
.custom-accordion .accordion-header{
    background:transparent;
}
.custom-accordion .accordion-button{
    background:transparent;box-shadow:none;
    padding:20px 40px 16px 0;
    font-size:16px;font-weight:600;color:var(--ink);
    position:relative;transition:var(--transition);
    border-radius:0 !important;
}
.custom-accordion .accordion-button:not(.collapsed){
    background:transparent;color:var(--brand);
}
.custom-accordion .accordion-button::after{
    display:none;
}
.custom-accordion .accordion-button::before{
    content:'\F4FE';font-family:'bootstrap-icons';
    position:absolute;right:0;top:20px;font-size:18px;
    color:var(--ink-soft);transition:transform .25s ease;
}
.custom-accordion .accordion-button:not(.collapsed)::before{
    content:'\F622';transform:rotate(90deg);color:var(--brand);
}
.custom-accordion .accordion-button:focus{box-shadow:none}
.custom-accordion .accordion-body{
    padding:0 40px 22px 0;
    font-size:14px;color:var(--ink-soft);line-height:1.75;
}
/* ===== CTA 下载区 ===== */
.download-cta{
    background:var(--dark);color:var(--white);padding:72px 0;
}
.cta-inner{
    display:flex;align-items:center;gap:40px;
    flex-wrap:wrap;
}
.cta-text{flex:1;min-width:280px}
.cta-text h2{font-size:30px;font-weight:700;margin-bottom:8px}
.cta-text p{font-size:15px;color:rgba(249,247,242,0.7);margin:0}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.qr-box{
    width:104px;height:104px;background:var(--white);border-radius:var(--radius-md);
    display:flex;align-items:center;justify-content:center;
    border:1px solid var(--line);
    flex-direction:column;gap:6px;
}
.qr-box i{font-size:36px;color:var(--ink)}
.qr-box span{font-size:11px;color:var(--ink-soft);font-weight:600}
.qr-caption{font-size:12px;color:rgba(249,247,242,0.5);text-align:center;margin-top:8px}
/* ===== Footer ===== */
.site-footer{
    background:var(--dark);color:var(--white);
    padding:64px 0 28px;
}
.footer-top{
    display:grid;grid-template-columns:1.4fr 1fr;
    gap:48px;padding-bottom:40px;
    border-bottom:1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo-text{color:var(--white);font-size:20px;margin-bottom:12px}
.footer-brand p{
    font-size:14px;color:rgba(249,247,242,0.55);margin:0;max-width:340px;
    line-height:1.7;
}
.footer-links{
    display:flex;gap:48px;
}
.footer-links .col{display:flex;flex-direction:column;gap:10px}
.footer-links h4{
    font-size:14px;font-weight:700;color:rgba(249,247,242,0.8);
    margin-bottom:8px;letter-spacing:.5px;
}
.footer-links a{
    font-size:14px;color:rgba(249,247,242,0.5);transition:var(--transition);
}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
    padding-top:24px;display:flex;justify-content:space-between;
    align-items:center;flex-wrap:wrap;gap:8px;
}
.footer-bottom p{
    font-size:13px;color:rgba(249,247,242,0.4);margin:0;
}
/* ===== 响应式 ===== */
@media (prefers-reduced-motion: reduce){
    *,*::before,*::after{
        animation:none !important;
        transition:none !important;
    }
    html{scroll-behavior:auto}
}
@media (max-width:991.98px){
    .top-row{padding:12px 0}
    .hot-keywords{display:none}
    .header-search input{width:150px}
    .nav-row{display:none}
    .mobile-menu-toggle{display:inline-flex;align-items:center;justify-content:center}
    .mobile-menu{display:none}
    .mobile-menu.open{display:flex}
    .cat-hero{padding:72px 0 60px}
    .cat-hero h1{font-size:36px}
    .features-strip .feature-item{
        border-right:1px solid var(--line);
    }
    .features-strip .feature-item:nth-child(2){border-right:none}
    .features-strip .feature-item:nth-child(3){border-right:1px solid var(--line)}
    .step-item::after{display:none}
    .footer-top{grid-template-columns:1fr;gap:32px}
}
@media (max-width:767.98px){
    body{font-size:14px}
    .container-custom{padding:0 20px}
    .header-tools{gap:12px}
    .header-search input{width:130px}
    .logo-text{font-size:18px}
    .cat-hero{padding:56px 0 48px}
    .cat-hero h1{font-size:28px;letter-spacing:0}
    .cat-hero .lead{font-size:15px}
    .hero-actions{flex-direction:column;align-items:stretch}
    .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
    .features-strip{padding:36px 0}
    .feature-item{padding:8px 12px;border-right:none}
    .feature-item i{font-size:26px}
    .guide-section{padding:56px 0}
    .guide-section .img-wrap img{height:220px}
    .process-section{padding:56px 0}
    .step-num{font-size:30px}
    .faq-section{padding:56px 0}
    .section-heading h2{font-size:24px}
    .custom-accordion .accordion-button{font-size:15px;padding:16px 36px 12px 0}
    .custom-accordion .accordion-button::before{top:16px}
    .custom-accordion .accordion-body{padding:0 36px 16px 0}
    .download-cta{padding:48px 0}
    .cta-inner{flex-direction:column;gap:24px;align-items:center;text-align:center}
    .cta-text{min-width:auto}
    .cta-actions{flex-direction:column;width:100%}
    .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
    .qr-box{width:96px;height:96px}
    .footer-top{grid-template-columns:1fr;gap:24px}
    .footer-links{flex-direction:column;gap:20px}
    .footer-bottom{flex-direction:column;text-align:center}
}