/* roulang page: index */
:root {
            --primary: #22504B;
            --primary-dark: #1B3F3B;
            --accent: #C2946E;
            --accent-light: rgba(194, 148, 110, 0.25);
            --bg: #F3F5F4;
            --card: #FFFFFF;
            --text: #1F2626;
            --text-secondary: #6B7574;
            --text-light: #A9B2B0;
            --btn-primary: #367262;
            --btn-primary-hover: #2C5E50;
            --radius: 10px;
            --radius-btn: 6px;
            --radius-lg: 14px;
            --shadow: 0 2px 8px rgba(29, 55, 50, 0.06);
            --shadow-hover: 0 8px 24px rgba(29, 55, 50, 0.10);
            --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 70px;
        }
        body {
            font-family: var(--font-stack);
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 1rem;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--btn-primary-hover);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
        }
        .section-padding {
            padding: 88px 0;
        }
        .section-header {
            margin-bottom: 3rem;
        }
        .section-header h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.02em;
        }
        .section-header p {
            color: var(--text-secondary);
            max-width: 560px;
            margin-top: .5rem;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg);
            border-bottom: 1px solid rgba(194, 148, 110, 0.2);
            position: sticky;
            top: 0;
            z-index: 1050;
            height: 56px;
            backdrop-filter: blur(6px);
        }
        .site-header .navbar {
            padding: 0;
            min-height: 56px;
        }
        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.01em;
        }
        .navbar-brand:hover {
            color: var(--primary);
        }
        .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            flex-shrink: 0;
        }
        .navbar-nav {
            gap: 0;
        }
        .navbar-nav .nav-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text);
            padding: 0.5rem 1rem;
            margin: 0 0.15rem;
            position: relative;
            transition: color .2s ease;
        }
        .navbar-nav .nav-link:hover {
            color: var(--primary);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
        }
        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--accent);
            border-radius: 999px;
            animation: lineGrow .35s ease forwards;
        }
        @keyframes lineGrow {
            from {
                width: 0;
            }
            to {
                width: 100%;
            }
        }
        .navbar-toggler {
            border: none;
            padding: 0.4rem;
            font-size: 1.2rem;
            color: var(--primary);
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            isolation: isolate;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(243, 245, 244, 0.92) 0%, rgba(243, 245, 244, 0.72) 45%, rgba(243, 245, 244, 0.45) 100%);
            z-index: -1;
        }
        .hero-content {
            padding: 4rem 0;
            max-width: 720px;
        }
        .hero-content h1 {
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 1.25rem;
            letter-spacing: 0.01em;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 520px;
            margin-bottom: 2rem;
        }
        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
        }
        .hero-trust {
            display: flex;
            gap: 2rem;
            flex-wrap: wrap;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .hero-trust span::before {
            content: "";
            width: 5px;
            height: 5px;
            background: var(--accent);
            border-radius: 50%;
        }
        .scroll-indicator {
            position: absolute;
            bottom: 2.2rem;
            left: 50%;
            transform: translateX(-50%);
            width: 1px;
            height: 48px;
            background: linear-gradient(to bottom, var(--accent), transparent);
            animation: scrollPulse 2s ease-in-out infinite;
        }
        @keyframes scrollPulse {
            0%,
            100% {
                opacity: 0.4;
                transform: translateX(-50%) scaleY(0.8);
            }
            50% {
                opacity: 1;
                transform: translateX(-50%) scaleY(1);
            }
        }

        /* ===== Buttons ===== */
        .btn-primary-custom {
            display: inline-block;
            background: var(--btn-primary);
            color: #fff;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-btn);
            font-size: 0.9375rem;
            font-weight: 500;
            border: none;
            transition: all .2s ease;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary-custom:hover {
            background: var(--btn-primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline-custom {
            display: inline-block;
            background: transparent;
            color: var(--primary);
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-btn);
            font-size: 0.9375rem;
            font-weight: 500;
            border: 1px solid var(--primary);
            transition: all .2s ease;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-outline-custom:hover {
            background: rgba(34, 80, 75, 0.08);
            color: var(--primary-dark);
            box-shadow: var(--shadow);
        }

        /* ===== Value Section ===== */
        .value-section {
            background: var(--bg);
            padding: 88px 0;
        }
        .value-list {
            max-width: 960px;
        }
        .value-item {
            display: flex;
            align-items: flex-start;
            gap: 2.5rem;
            border-top: 1px solid var(--accent-light);
            padding: 2.2rem 0.5rem;
            transition: background .2s ease;
        }
        .value-item:last-child {
            border-bottom: 1px solid var(--accent-light);
        }
        .value-item:hover {
            background: rgba(255, 255, 255, 0.5);
        }
        .value-number {
            font-size: 0.875rem;
            color: var(--accent);
            font-weight: 600;
            letter-spacing: 0.1em;
            min-width: 44px;
            padding-top: 0.3rem;
        }
        .value-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(54, 114, 98, 0.1);
            color: var(--btn-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .value-content {
            flex: 1;
        }
        .value-content h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.4rem;
        }
        .value-content p {
            color: var(--text-secondary);
            margin: 0;
            max-width: 600px;
            line-height: 1.7;
        }

        /* ===== Showcase Carousel ===== */
        .showcase-section {
            background: var(--card);
            padding: 88px 0;
        }
        .showcase-carousel {
            max-width: 960px;
            margin: 0 auto;
            position: relative;
        }
        .mockup-window {
            background: #f5f7f6;
            border: 1px solid #e3e8e6;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            margin: 0 auto;
            max-width: 860px;
        }
        .mockup-topbar {
            display: flex;
            gap: 6px;
            padding: 12px 16px;
            background: #eef1ef;
            border-bottom: 1px solid #e0e5e2;
        }
        .mockup-topbar span {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #d5dbd8;
        }
        .mockup-topbar span:first-child {
            background: #e8b0a0;
        }
        .mockup-topbar span:nth-child(2) {
            background: #ecd39a;
        }
        .mockup-topbar span:nth-child(3) {
            background: #a3d9b2;
        }
        .mockup-body {
            padding: 2.5rem;
            min-height: 260px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .mockup-line {
            height: 14px;
            background: #e0e5e2;
            border-radius: 4px;
        }
        .mockup-line.short {
            width: 40%;
        }
        .mockup-line.mid {
            width: 70%;
        }
        .mockup-line.long {
            width: 90%;
        }
        .mockup-block {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .mockup-card {
            background: #fff;
            border: 1px solid #e5e9e6;
            border-radius: 8px;
            padding: 14px;
            flex: 1;
            min-width: 120px;
        }
        .carousel-control-prev,
        .carousel-control-next {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid var(--accent-light);
            top: 50%;
            transform: translateY(-50%);
            opacity: 0.9;
            transition: all .2s ease;
        }
        .carousel-control-prev {
            left: -60px;
        }
        .carousel-control-next {
            right: -60px;
        }
        .carousel-control-prev:hover,
        .carousel-control-next:hover {
            background: var(--btn-primary);
            border-color: var(--btn-primary);
        }
        .carousel-control-prev i,
        .carousel-control-next i {
            font-size: 1rem;
            color: var(--primary);
        }
        .carousel-control-prev:hover i,
        .carousel-control-next:hover i {
            color: #fff;
        }
        .carousel-indicators {
            position: static;
            margin-top: 1.5rem;
            display: flex;
            justify-content: center;
            gap: 8px;
        }
        .carousel-indicators [data-bs-target] {
            width: 8px;
            height: 8px;
            border-radius: 999px;
            background-color: var(--accent);
            border: none;
            opacity: 0.4;
            transition: all .3s ease;
        }
        .carousel-indicators .active {
            width: 20px;
            opacity: 1;
            background-color: var(--accent);
        }

        /* ===== Requirements ===== */
        .requirements-section {
            background: var(--bg);
            padding: 88px 0;
        }
        .requirements-left h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 600;
            color: var(--primary);
        }
        .requirements-left p {
            color: var(--text-secondary);
            margin-top: 1rem;
            max-width: 320px;
        }
        .requirement-list {
            border-top: 1px solid var(--accent-light);
        }
        .requirement-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid var(--accent-light);
            line-height: 2.2;
            color: var(--text);
            font-size: 0.9375rem;
        }
        .req-check {
            color: var(--btn-primary);
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
            margin-top: 0.1rem;
        }

        /* ===== Testimonials ===== */
        .testimonials-section {
            background: var(--card);
            padding: 88px 0;
        }
        .testimonials-grid {
            --gap: 1.5rem;
        }
        .testimonial-card {
            background: var(--card);
            border: 1px solid rgba(194, 148, 110, 0.22);
            border-radius: var(--radius);
            padding: 2rem 1.8rem;
            height: calc(100% - var(--gap));
            margin-bottom: var(--gap);
            transition: box-shadow .2s ease;
        }
        .testimonials-grid .col-md-6.col-lg-4:nth-child(2) {
            transform: translateY(24px);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow);
        }
        .quote-mark {
            font-size: 3rem;
            font-family: Georgia, serif;
            color: var(--accent);
            line-height: 1;
            height: 40px;
            margin-bottom: 0.8rem;
        }
        .testimonial-card>p {
            color: var(--text);
            font-size: 0.9375rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
            min-height: 90px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .testimonial-author img {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            object-fit: cover;
            border: 2px solid rgba(194, 148, 110, 0.3);
        }
        .author-name {
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--primary);
        }
        .author-role {
            font-size: 0.8125rem;
            color: var(--text-secondary);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg);
            padding: 88px 0;
        }
        .faq-left h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 600;
            color: var(--primary);
        }
        .faq-left p {
            color: var(--text-secondary);
            margin-top: 1rem;
            max-width: 260px;
        }
        .accordion {
            --bs-accordion-border-color: transparent;
            --bs-accordion-border-width: 0;
            --bs-accordion-border-radius: 0;
            --bs-accordion-inner-border-radius: 0;
            --bs-accordion-bg: transparent;
        }
        .accordion-item {
            background: transparent;
            border-bottom: 1px solid var(--accent-light);
        }
        .accordion-item:first-child {
            border-top: 1px solid var(--accent-light);
        }
        .accordion-button {
            font-weight: 600;
            font-size: 0.9375rem;
            color: var(--primary);
            padding: 1.2rem 0.5rem;
            background: transparent;
            border: none;
            box-shadow: none;
            transition: color .2s ease;
        }
        .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border: none;
            outline: 2px solid var(--accent-light);
            outline-offset: -2px;
        }
        .accordion-button::after {
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            content: "\f054";
            font-size: 0.75rem;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 1.5rem;
            height: 1.5rem;
            transition: transform .25s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(90deg);
            background-image: none;
            color: var(--accent);
        }
        .accordion-body {
            padding: 0 0.5rem 1.2rem;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.8;
            max-width: 620px;
        }

        /* ===== News / CMS List ===== */
        .news-section {
            background: var(--card);
            padding: 88px 0;
        }
        .news-list {
            max-width: 960px;
        }
        .news-item {
            background: var(--card);
            border: 1px solid rgba(194, 148, 110, 0.22);
            border-radius: var(--radius);
            padding: 1.6rem 1.8rem;
            margin-bottom: 1rem;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .news-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow);
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            margin-bottom: 0.5rem;
        }
        .badge-category {
            display: inline-block;
            background: rgba(194, 148, 110, 0.15);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
        }
        .news-meta time {
            font-size: 0.8125rem;
            color: var(--text-light);
        }
        .news-title {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
        }
        .news-title a {
            color: var(--primary);
            transition: color .2s ease;
        }
        .news-title a:hover {
            color: var(--btn-primary-hover);
        }
        .news-summary {
            color: var(--text-secondary);
            font-size: 0.875rem;
            margin: 0;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .empty-state {
            border: 1px dashed var(--accent-light);
            border-radius: var(--radius);
            padding: 3rem 2rem;
            text-align: center;
            color: var(--text-light);
            font-size: 0.9375rem;
            background: rgba(243, 245, 244, 0.4);
        }
        .more-link {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--primary);
            white-space: nowrap;
        }
        .more-link i {
            font-size: 0.7rem;
            margin-left: 0.3rem;
            transition: transform .2s ease;
        }
        .more-link:hover i {
            transform: translateX(3px);
        }

        /* ===== Download CTA ===== */
        .download-cta-section {
            background: var(--bg);
            padding: 88px 0;
        }
        .download-panel {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            text-align: center;
            color: #fff;
        }
        .download-panel h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.75rem;
        }
        .download-panel p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 480px;
            margin: 0 auto 2rem;
            font-size: 0.9375rem;
        }
        .download-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            background: #fff;
            color: var(--text);
            padding: 0.7rem 1.5rem;
            border-radius: var(--radius-btn);
            font-size: 0.9375rem;
            font-weight: 500;
            border: none;
            transition: all .2s ease;
            cursor: pointer;
            text-decoration: none;
        }
        .download-btn i {
            font-size: 1.1rem;
            color: var(--btn-primary);
        }
        .download-btn:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
        }
        .download-btn:hover i {
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--accent-light);
            padding: 3rem 0 1.5rem;
        }
        .footer-brand .footer-logo {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 0.8rem;
        }
        .footer-brand .footer-logo::before {
            content: "";
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.875rem;
            max-width: 260px;
            line-height: 1.7;
        }
        .site-footer h4 {
            font-size: 0.9375rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 0.5rem;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }
        .site-footer ul li a {
            color: var(--text-secondary);
            transition: color .2s ease;
        }
        .site-footer ul li a:hover {
            color: var(--primary);
        }
        .site-footer .contact-list li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-footer .contact-list i {
            color: var(--accent);
            font-size: 0.85rem;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(194, 148, 110, 0.15);
            margin-top: 2rem;
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.8125rem;
            color: var(--text-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .site-header .navbar-collapse {
                position: fixed;
                top: 56px;
                left: 0;
                right: 0;
                bottom: 0;
                background: #fff;
                z-index: 1040;
                padding: 2rem 1rem;
                overflow-y: auto;
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
            }
            .site-header .navbar-collapse.show {
                display: flex !important;
            }
            .navbar-nav {
                width: 100%;
                text-align: center;
                padding-top: 2rem;
                gap: 0.25rem;
            }
            .navbar-nav .nav-link {
                font-size: 1.1rem;
                padding: 1rem 0;
                display: block;
            }
            .navbar-nav .nav-link.active::after {
                height: 3px;
                width: 100%;
            }
            .carousel-control-prev {
                left: -12px;
            }
            .carousel-control-next {
                right: -12px;
            }
            .testimonials-grid .col-md-6.col-lg-4:nth-child(2) {
                transform: none;
            }
        }
        @media (max-width: 767.98px) {
            .section-padding,
            .value-section,
            .showcase-section,
            .requirements-section,
            .testimonials-section,
            .faq-section,
            .news-section,
            .download-cta-section {
                padding: 56px 0;
            }
            .hero-section {
                min-height: 70vh;
            }
            .hero-content {
                padding: 2rem 0;
            }
            .hero-actions .btn-primary-custom,
            .hero-actions .btn-outline-custom {
                width: 100%;
                text-align: center;
            }
            .value-item {
                flex-direction: column;
                gap: 0.8rem;
                padding: 1.6rem 0.5rem;
            }
            .value-number {
                min-width: auto;
            }
            .mockup-body {
                padding: 1.5rem;
                min-height: 200px;
            }
            .carousel-indicators {
                margin-top: 1rem;
            }
            .requirement-item {
                padding: 0.9rem 0;
            }
            .download-panel {
                padding: 2rem 1.2rem;
            }
            .download-buttons .download-btn {
                width: 100%;
                justify-content: center;
            }
            .faq-left p {
                max-width: none;
            }
        }
        @media (max-width: 575.98px) {
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-trust {
                gap: 1rem;
                flex-direction: column;
            }
            .testimonials-grid {
                margin-left: 0;
                margin-right: 0;
            }
            .testimonial-card {
                padding: 1.5rem;
            }
            .testimonial-card>p {
                min-height: 0;
            }
            .news-item {
                padding: 1.2rem 1rem;
            }
            .news-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.3rem;
            }
            .site-footer {
                padding: 2rem 0 1rem;
            }
            .footer-bottom {
                margin-top: 1.5rem;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #22504B;
    --accent: #C2946E;
    --bg: #F3F5F4;
    --card-bg: #FFFFFF;
    --text: #1F2626;
    --text-secondary: #6B7574;
    --text-muted: #A9B2B0;
    --btn-primary: #367262;
    --btn-primary-hover: #2C5E50;
    --radius-card: 10px;
    --radius-btn: 6px;
    --radius-window: 14px;
    --shadow-card: 0 2px 8px rgba(29,55,50,0.06);
    --shadow-hover: 0 8px 24px rgba(29,55,50,0.10);
    --border-light: 1px solid rgba(194,148,110,0.25);
    --section-padding: 88px 0;
    --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.7;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--btn-primary-hover);
}

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

.container {
    max-width: 1200px;
}

section {
    padding: var(--section-padding);
}

/* Nav */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: #FFFFFF;
    border-bottom: 1px solid rgba(194,148,110,0.2);
    backdrop-filter: blur(8px);
}

.navbar {
    min-height: 56px;
    padding: 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.02em;
    padding: 0.5rem 0;
}

.navbar-brand:hover {
    color: var(--primary);
}

.brand-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
    flex-shrink: 0;
}

.navbar-nav {
    gap: 0.5rem;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text);
    padding: 0.5rem 0.75rem !important;
    position: relative;
    transition: color 0.2s ease;
}

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

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
}

.nav-link.active::after {
    content: "";
    position: absolute;
    left: 0.75rem;
    right: 0.75rem;
    bottom: 0;
    height: 3px;
    background: var(--accent);
    border-radius: 999px;
    animation: underlineIn 0.3s ease;
}

@keyframes underlineIn {
    from {
        transform: scaleX(0);
        transform-origin: left;
    }
    to {
        transform: scaleX(1);
        transform-origin: left;
    }
}

.navbar-toggler {
    border: none;
    font-size: 1.2rem;
    color: var(--primary);
    padding: 0.25rem 0.5rem;
    outline: none;
}

.navbar-toggler:focus {
    box-shadow: none;
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Category Hero */
.category-hero {
    position: relative;
    padding: 0;
    min-height: 40vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.category-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.category-hero-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(243,245,244,0.82);
    backdrop-filter: blur(2px);
}

.category-hero-content {
    position: relative;
    z-index: 1;
    padding: 80px 0;
    max-width: 720px;
}

.category-hero-content h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--primary);
    line-height: 1.3;
    margin-bottom: 1rem;
    letter-spacing: 0.01em;
}

.category-hero-content p {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 0;
    line-height: 1.8;
    max-width: 620px;
}

@media (max-width: 767px) {
    .category-hero-content {
        padding: 56px 0;
        text-align: center;
        margin: 0 auto;
    }

    .category-hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
}

/* Service value list */
.value-list-section {
    background: var(--bg);
    padding: 88px 0;
}

.section-label {
    display: inline-flex;
    align-items: center;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
    gap: 6px;
}

.section-label::before {
    content: "";
    width: 24px;
    height: 1px;
    background: var(--accent);
    display: inline-block;
}

.value-list-section .section-title {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.value-list-section .section-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2.5rem;
    max-width: 480px;
}

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

.value-list li {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.6rem 0;
    border-bottom: 1px solid rgba(194,148,110,0.25);
    border-top: 1px solid rgba(194,148,110,0.25);
    transition: background 0.2s ease;
}

.value-list li:first-child {
    border-top: none;
}

.value-list li:last-child {
    border-bottom: none;
}

.value-list .value-num {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1.6;
    flex-shrink: 0;
    min-width: 48px;
    letter-spacing: 0.04em;
}

.value-list .value-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(34,80,75,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 0.95rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.value-list .value-body h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
    line-height: 1.4;
}

.value-list .value-body p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 0;
    line-height: 1.6;
}

@media (max-width: 991px) {
    .value-list li {
        gap: 1rem;
    }

    .value-list .value-num {
        min-width: 36px;
    }
}

/* Service cards grid */
.service-cards-section {
    background: #FFFFFF;
    padding: 88px 0;
}

.service-cards-section .section-title {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.service-cards-section .section-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 520px;
    margin-bottom: 2.5rem;
}

.service-card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    border: 1px solid rgba(194,148,110,0.22);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(194,148,110,0.4);
}

.service-card .card-img-wrap {
    aspect-ratio: 8/5;
    overflow: hidden;
    background: #F3F5F4;
}

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

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

.service-card .card-body {
    padding: 1.4rem 1.4rem 1.2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-card .card-body h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.service-card .card-body p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    flex: 1;
}

.card-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s, color 0.2s;
    align-self: flex-start;
}

.card-more:hover {
    color: var(--btn-primary-hover);
    border-bottom-color: var(--accent);
}

.card-more i {
    font-size: 0.75rem;
}

@media (max-width: 767px) {
    .service-card .card-body {
        padding: 1.2rem;
    }
}

/* Scenario section */
.scenario-section {
    background: var(--bg);
    padding: 88px 0;
}

.scenario-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.scenario-left h2 {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    font-weight: 600;
    color: var(--primary);
    line-height: 1.3;
    margin-bottom: 1rem;
}

.scenario-left p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    max-width: 380px;
}

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

.scenario-right li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(194,148,110,0.25);
    font-size: 0.9375rem;
    color: var(--text);
    line-height: 1.6;
}

.scenario-right li:last-child {
    border-bottom: none;
}

.scenario-right li .check-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(54,114,98,0.12);
    color: var(--btn-primary);
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 3px;
}

@media (max-width: 991px) {
    .scenario-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .scenario-left p {
        max-width: 100%;
    }
}

/* Process section */
.process-section {
    background: #FFFFFF;
    padding: 88px 0;
}

.process-section .section-title {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.process-section .section-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 520px;
    margin-bottom: 2.5rem;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    counter-reset: step;
}

.process-step {
    position: relative;
    padding: 1.5rem 1.2rem 1.2rem;
    background: var(--bg);
    border-radius: var(--radius-card);
    border-top: 2px solid var(--accent);
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}

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

.process-step .step-num {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
    display: block;
}

.process-step .step-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: rgba(34,80,75,0.08);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    margin-bottom: 0.8rem;
}

.process-step h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.35rem;
}

.process-step p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

@media (max-width: 991px) {
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 575px) {
    .process-steps {
        grid-template-columns: 1fr;
    }
}

/* FAQ section */
.faq-section {
    background: var(--bg);
    padding: 88px 0;
}

.faq-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
}

.faq-left h2 {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    font-weight: 600;
    color: var(--primary);
    line-height: 1.3;
    margin-bottom: 1rem;
}

.faq-left p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    max-width: 340px;
}

.faq-accordion .accordion-item {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(194,148,110,0.25);
    border-radius: 0 !important;
    margin-bottom: 0;
}

.faq-accordion .accordion-item:first-child {
    border-top: 1px solid rgba(194,148,110,0.25);
}

.faq-accordion .accordion-button {
    background: transparent;
    color: var(--text);
    font-size: 1rem;
    font-weight: 600;
    padding: 1.15rem 0.25rem;
    box-shadow: none;
    outline: none;
    border: none;
    transition: color 0.2s ease;
}

.faq-accordion .accordion-button:hover {
    color: var(--primary);
}

.faq-accordion .accordion-button:focus {
    box-shadow: none;
    outline: 2px solid rgba(194,148,110,0.45);
    outline-offset: -2px;
    border-radius: 4px;
}

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

.faq-accordion .accordion-button::after {
    background-image: none;
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.8rem;
    color: var(--accent);
    transform: rotate(0deg);
    transition: transform 0.3s ease;
    width: auto;
    height: auto;
    margin-left: auto;
}

.faq-accordion .accordion-button:not(.collapsed)::after {
    transform: rotate(-180deg);
}

.faq-accordion .accordion-body {
    padding: 0 0.25rem 1.25rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

@media (max-width: 991px) {
    .faq-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .faq-left p {
        max-width: 100%;
    }
}

/* CTA */
.cta-section {
    padding: 88px 0;
    background: var(--bg);
}

.cta-box {
    background: var(--primary);
    border-radius: var(--radius-window);
    padding: 3rem;
    text-align: center;
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: "";
    position: absolute;
    top: -60px;
    right: -60px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(194,148,110,0.15);
}

.cta-box::after {
    content: "";
    position: absolute;
    bottom: -80px;
    left: -40px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(194,148,110,0.08);
}

.cta-box h2 {
    font-size: clamp(1.4rem, 3vw, 1.9rem);
    font-weight: 600;
    margin-bottom: 0.75rem;
    position: relative;
    z-index: 1;
    color: #FFFFFF;
}

.cta-box p {
    font-size: 1rem;
    opacity: 0.85;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.cta-box .cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.btn-custom-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--btn-primary);
    color: #FFFFFF;
    border: 1px solid var(--btn-primary);
    border-radius: var(--radius-btn);
    padding: 0.7rem 1.6rem;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: background 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn-custom-primary:hover {
    background: var(--btn-primary-hover);
    border-color: var(--btn-primary-hover);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(44,94,80,0.3);
}

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

.btn-custom-light {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #FFFFFF;
    color: var(--primary);
    border: 1px solid rgba(255,255,255,0.9);
    border-radius: var(--radius-btn);
    padding: 0.7rem 1.6rem;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn-custom-light:hover {
    background: var(--accent);
    color: #FFFFFF;
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(194,148,110,0.35);
}

@media (max-width: 575px) {
    .cta-box {
        padding: 2rem 1.25rem;
    }

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

/* Footer */
.site-footer {
    background: #FFFFFF;
    border-top: 1px solid rgba(194,148,110,0.2);
    padding: 3rem 0 0;
}

.footer-brand .footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.75rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    max-width: 320px;
}

.site-footer h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    letter-spacing: 0.02em;
}

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

.site-footer ul li {
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.site-footer ul li a {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.site-footer ul li a:hover {
    color: var(--primary);
}

.site-footer .contact-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.site-footer .contact-list li i {
    color: var(--accent);
    width: 16px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(194,148,110,0.2);
    padding: 1.25rem 0;
    margin-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin: 0;
}

/* Responsive */
@media (max-width: 991px) {
    .navbar-nav {
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
    }

    .navbar-collapse {
        background: #FFFFFF;
        padding: 0.5rem 1rem;
        border-radius: 10px;
        margin-top: 0.5rem;
        box-shadow: 0 8px 20px rgba(29,55,50,0.08);
    }

    .nav-link {
        padding: 0.7rem 0.5rem !important;
        border-bottom: 1px solid rgba(194,148,110,0.12);
    }

    .nav-link.active::after {
        left: 0.5rem;
        right: auto;
        width: 32px;
    }
}

@media (max-width: 767px) {
    section {
        padding: 56px 0;
    }

    .value-list-section,
    .service-cards-section,
    .scenario-section,
    .process-section,
    .faq-section,
    .cta-section {
        padding: 56px 0;
    }
}

@media (max-width: 575px) {
    .value-list li {
        flex-wrap: wrap;
        gap: 0.75rem;
    }

    .value-list .value-num {
        min-width: auto;
    }

    .value-list .value-icon {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }
}

/* roulang page: article */
:root {
            --primary: #22504B;
            --primary-light: #367262;
            --primary-dark: #2C5E50;
            --accent: #C2946E;
            --accent-soft: rgba(194, 148, 110, 0.25);
            --bg: #F3F5F4;
            --card-bg: #FFFFFF;
            --text: #1F2626;
            --text-secondary: #6B7574;
            --text-muted: #A9B2B0;
            --border: rgba(194, 148, 110, 0.25);
            --radius-card: 10px;
            --radius-btn: 6px;
            --radius-tag: 999px;
            --shadow-card: 0 2px 8px rgba(29, 55, 50, 0.06);
            --shadow-hover: 0 8px 24px rgba(29, 55, 50, 0.10);
            --transition: all 0.2s ease;
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

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

        body {
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        a:focus-visible,
        button:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
        }

        /* ========== 导航 ========== */
        .site-header {
            background: var(--bg);
            border-bottom: 1px solid rgba(194, 148, 110, 0.2);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .navbar {
            padding-top: 0.5rem;
            padding-bottom: 0.5rem;
            min-height: 56px;
        }

        .navbar-brand {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            letter-spacing: 0.02em;
        }

        .navbar-brand:hover {
            color: var(--primary);
        }

        .brand-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .nav-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.5rem 0.25rem;
            margin: 0 0.875rem;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.01em;
        }

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

        .nav-link.active {
            color: var(--primary);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 3px;
            border-radius: 2px;
            background: var(--accent);
            animation: navUnderline 0.3s ease;
        }

        @keyframes navUnderline {
            from {
                transform: scaleX(0);
                transform-origin: left;
            }
            to {
                transform: scaleX(1);
                transform-origin: left;
            }
        }

        .navbar-toggler {
            border: none;
            font-size: 1.25rem;
            color: var(--primary);
            padding: 0.25rem 0.5rem;
            background: transparent;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--accent);
            border-radius: 6px;
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            background: var(--bg);
            border-bottom: 1px solid rgba(194, 148, 110, 0.15);
            padding: 0.875rem 0;
        }

        .breadcrumb {
            margin-bottom: 0;
            padding: 0;
        }

        .breadcrumb-item {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        .breadcrumb-item a {
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .breadcrumb-item.active {
            color: var(--primary);
            max-width: 360px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .breadcrumb-item + .breadcrumb-item::before {
            color: var(--accent);
            content: '/';
            padding: 0 0.375rem;
        }

        /* ========== 文章区 ========== */
        .article-section {
            padding: 3.5rem 0;
        }

        .article-card {
            background: var(--card-bg);
            border-radius: 14px;
            padding: 3rem;
            box-shadow: var(--shadow-card);
        }

        .article-header {
            text-align: center;
            margin-bottom: 2.5rem;
            padding-bottom: 2rem;
            border-bottom: 1px solid var(--border);
        }

        .article-header h1 {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 1.25rem;
            letter-spacing: 0.01em;
        }

        .article-meta {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 1.25rem;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
        }

        .meta-item i {
            color: var(--accent);
            font-size: 0.8125rem;
        }

        /* ========== 正文 ========== */
        .article-body {
            max-width: 680px;
            margin: 0 auto;
            font-size: 1rem;
            line-height: 1.9;
            color: var(--text);
        }

        .article-body > *:first-child {
            margin-top: 0;
        }

        .article-body > *:last-child {
            margin-bottom: 0;
        }

        .article-body h2 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border);
            letter-spacing: 0.01em;
        }

        .article-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary);
            margin: 2rem 0 0.75rem;
        }

        .article-body p {
            margin-bottom: 1.25rem;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent);
            padding: 0.75rem 1.5rem;
            margin: 1.5rem 0;
            background: rgba(194, 148, 110, 0.08);
            border-radius: 0 10px 10px 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body blockquote p {
            margin-bottom: 0.5rem;
        }

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

        .article-body img {
            border-radius: 10px;
            margin: 1.75rem auto;
            display: block;
        }

        .article-body pre {
            background: #eef1f0;
            border-radius: 10px;
            padding: 1.25rem;
            overflow-x: auto;
            margin: 1.5rem 0;
            font-size: 0.875rem;
            line-height: 1.6;
        }

        .article-body code {
            background: #eef1f0;
            border-radius: 4px;
            padding: 0.15rem 0.4rem;
            font-size: 0.875rem;
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
            font-size: inherit;
        }

        .article-body a {
            color: var(--primary-light);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body a:hover {
            color: var(--primary-dark);
            text-decoration-thickness: 2px;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.25rem;
        }

        .article-body li {
            margin-bottom: 0.5rem;
        }

        .article-body li::marker {
            color: var(--accent);
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 2rem 0;
        }

        .article-body table {
            width: 100%;
            margin: 1.5rem 0;
            border-collapse: collapse;
            font-size: 0.9375rem;
        }

        .article-body th,
        .article-body td {
            border: 1px solid rgba(194, 148, 110, 0.3);
            padding: 0.625rem 1rem;
            text-align: left;
        }

        .article-body th {
            background: rgba(34, 80, 75, 0.05);
            font-weight: 600;
            color: var(--primary);
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            padding: 3.5rem 0 5rem;
            background: var(--bg);
        }

        .section-heading {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .section-heading h2 {
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.5rem;
        }

        .section-heading p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
        }

        .related-card {
            display: block;
            background: var(--card-bg);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            height: 100%;
            border: 1px solid rgba(194, 148, 110, 0.12);
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            text-decoration: none;
            border-color: var(--accent);
        }

        .related-card:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .related-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #eef1f0;
        }

        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
            transition: transform 0.4s ease;
        }

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

        .related-card-body {
            padding: 1.5rem;
        }

        .related-tag {
            display: inline-block;
            font-size: 0.8125rem;
            color: var(--accent);
            background: rgba(194, 148, 110, 0.12);
            padding: 0.25rem 0.9rem;
            border-radius: 999px;
            margin-bottom: 0.75rem;
            font-weight: 500;
        }

        .related-card-body h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .related-card-body p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .related-link {
            font-size: 0.875rem;
            color: var(--primary-light);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            transition: var(--transition);
        }

        .related-card:hover .related-link {
            color: var(--primary-dark);
            gap: 0.5rem;
        }

        .article-actions {
            margin-top: 3rem;
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* ========== 空状态 ========== */
        .empty-card {
            background: var(--card-bg);
            border-radius: 14px;
            padding: 4rem 2rem;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
            box-shadow: var(--shadow-card);
        }

        .empty-icon {
            font-size: 3rem;
            color: var(--accent);
            margin-bottom: 1rem;
            display: block;
        }

        .empty-card h1 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        .empty-card p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }

        /* ========== 按钮 ========== */
        .btn {
            border-radius: var(--radius-btn);
            padding: 0.7rem 1.6rem;
            font-size: 0.9375rem;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-primary {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #fff;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }

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

        .btn-outline-primary:hover,
        .btn-outline-primary:focus {
            background: rgba(34, 80, 75, 0.08);
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 3.5rem 0 0;
        }

        .footer-logo {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 0.75rem;
            letter-spacing: 0.02em;
        }

        .footer-brand p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .site-footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

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

        .site-footer ul li {
            margin-bottom: 0.5rem;
        }

        .site-footer ul a {
            font-size: 0.875rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .site-footer ul a:hover {
            color: var(--primary);
            padding-left: 0.25rem;
        }

        .contact-list li {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        .contact-list i {
            color: var(--accent);
            margin-right: 0.375rem;
            width: 1rem;
            text-align: center;
        }

        .footer-bottom {
            margin-top: 3rem;
            padding: 1.25rem 0;
            border-top: 1px solid var(--border);
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 991px) {
            .navbar-collapse {
                background: #fff;
                border-radius: 10px;
                padding: 0.75rem;
                margin-top: 0.5rem;
                box-shadow: var(--shadow-card);
                max-height: calc(100vh - 80px);
                overflow-y: auto;
            }

            .nav-link {
                padding: 0.75rem 1rem;
                margin: 0;
                text-align: center;
                font-size: 1rem;
            }

            .nav-link.active::after {
                bottom: 0.375rem;
                width: 48px;
                left: 50%;
                transform: translateX(-50%);
                right: auto;
            }

            .article-section {
                padding: 2.5rem 0;
            }

            .article-card {
                padding: 2rem;
            }
        }

        @media (max-width: 768px) {
            .article-card {
                padding: 1.5rem;
                border-radius: 12px;
            }

            .article-meta {
                gap: 0.75rem;
                flex-direction: column;
                align-items: center;
            }

            .related-section {
                padding: 2.5rem 0 3.5rem;
            }

            .site-footer {
                padding: 2.5rem 0 0;
            }

            .footer-bottom {
                margin-top: 2rem;
            }
        }

        @media (max-width: 576px) {
            .article-header h1 {
                font-size: 1.4rem;
            }

            .article-header {
                margin-bottom: 1.75rem;
                padding-bottom: 1.5rem;
            }

            .article-actions {
                flex-direction: column;
            }

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

            .breadcrumb-item.active {
                max-width: 200px;
            }

            .empty-card {
                padding: 3rem 1.5rem;
            }
        }