/* roulang page: index */
:root {
            --color-primary: #0f766e;
            --color-primary-dark: #115e59;
            --color-accent: #f59e0b;
            --color-dark: #0d1117;
            --color-dark-2: #1a1f2b;
            --color-bg: #f8f6f3;
            --color-text: #1f2937;
            --color-text-secondary: #6b7280;
            --color-border: #e5e7eb;
            --radius-card: 1rem;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 12px 24px rgba(0, 0, 0, 0.08);
            --font-sans-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        input:focus-visible,
        button:focus-visible,
        a:focus-visible {
            outline: 2px solid rgba(15, 118, 110, 0.5);
            outline-offset: 2px;
        }

        .container {
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1rem;
        }

        @media (min-width: 640px) {
            .container {
                padding: 0 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: var(--color-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-top {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.75rem 0;
            flex-wrap: wrap;
        }

        .logo {
            flex-shrink: 0;
            font-size: 1.5rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo-mark {
            width: 2rem;
            height: 2rem;
            border-radius: 0.5rem;
            background: linear-gradient(135deg, var(--color-primary), #14b8a6);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }

        .nav-search {
            flex: 1;
            max-width: 48%;
            order: 3;
            width: 100%;
            position: relative;
        }

        .nav-search svg {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: #9ca3af;
            pointer-events: none;
            z-index: 1;
        }

        .nav-search input {
            width: 100%;
            background-color: var(--color-dark-2);
            color: #fff;
            border-radius: 9999px;
            padding: 0.625rem 1rem 0.625rem 2.75rem;
            border: 1px solid transparent;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .nav-search input::placeholder {
            color: #9ca3af;
        }

        .nav-search input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 2px rgba(15, 118, 110, 0.3);
        }

        .header-cta {
            flex-shrink: 0;
            order: 2;
            margin-left: auto;
        }

        .nav-bottom {
            display: flex;
            gap: 0.25rem;
            overflow-x: auto;
            padding: 0.5rem 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            scrollbar-width: none;
        }

        .nav-bottom::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            color: #d1d5db;
            padding: 0.375rem 1rem;
            border-radius: 0.5rem;
            font-size: 0.875rem;
            font-weight: 500;
            white-space: nowrap;
            transition: background-color 0.2s, color 0.2s;
        }

        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.06);
            color: #fff;
        }

        .nav-link.active {
            background-color: rgba(15, 118, 110, 0.2);
            color: #2dd4bf;
            font-weight: 600;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            background-color: var(--color-primary);
            color: #fff;
            font-weight: 600;
            padding: 0.625rem 1.5rem;
            border-radius: 0.5rem;
            font-size: 0.875rem;
            transition: background-color 0.2s, transform 0.15s, box-shadow 0.2s;
            cursor: pointer;
        }

        .btn-primary:hover {
            background-color: var(--color-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(15, 118, 110, 0.25);
        }

        .btn-primary:active {
            transform: scale(0.97);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            border: 1px solid #d1d5db;
            color: #374151;
            font-weight: 500;
            padding: 0.625rem 1.5rem;
            border-radius: 0.5rem;
            font-size: 0.875rem;
            background: transparent;
            transition: border-color 0.2s, color 0.2s, transform 0.15s;
            cursor: pointer;
        }

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

        .btn-outline:active {
            transform: scale(0.97);
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            background-color: #fff;
            color: #111827;
            font-weight: 600;
            padding: 0.625rem 1.5rem;
            border-radius: 0.5rem;
            font-size: 0.875rem;
            transition: transform 0.15s, box-shadow 0.2s;
            cursor: pointer;
        }

        .btn-white:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        .btn-white:active {
            transform: scale(0.97);
        }

        /* Hero */
        .hero {
            background-color: var(--color-dark);
            background-image: linear-gradient(rgba(13, 17, 23, 0.82), rgba(13, 17, 23, 0.9)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 4rem 0 3rem;
            position: relative;
            overflow: hidden;
        }

        .hero-inner {
            text-align: center;
            max-width: 56rem;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: 1.25rem;
        }

        .hero h1 .highlight {
            color: #2dd4bf;
        }

        .hero-subtitle {
            color: #d1d5db;
            font-size: 1.125rem;
            max-width: 34rem;
            margin: 0 auto 2rem;
            line-height: 1.8;
        }

        .hero-search {
            max-width: 36rem;
            margin: 0 auto 2rem;
            position: relative;
        }

        .hero-search svg {
            position: absolute;
            left: 1.25rem;
            top: 50%;
            transform: translateY(-50%);
            color: #9ca3af;
            pointer-events: none;
            z-index: 1;
        }

        .hero-search input {
            width: 100%;
            background-color: #fff;
            color: #111827;
            border-radius: 0.75rem;
            padding: 1rem 1.25rem 1rem 3.25rem;
            font-size: 1rem;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
            border: 2px solid transparent;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .hero-search input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.2), 0 8px 30px rgba(0, 0, 0, 0.15);
        }

        .hero-search input::placeholder {
            color: #9ca3af;
        }

        .hero-buttons {
            display: flex;
            gap: 0.75rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
            max-width: 40rem;
            margin: 0 auto;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 2rem;
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat-number {
            font-size: 1.75rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.75rem;
            color: #9ca3af;
            margin-top: 0.25rem;
            letter-spacing: 0.05em;
        }

        /* 区块间距 */
        .section {
            padding: 4rem 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 6rem 0;
            }
        }

        .section-head {
            text-align: center;
            max-width: 42rem;
            margin: 0 auto 3rem;
        }

        .section-head h2 {
            font-size: 1.875rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.3;
            margin-bottom: 0.75rem;
        }

        .section-head p {
            color: var(--color-text-secondary);
            font-size: 1rem;
            line-height: 1.8;
        }

        /* 品牌故事 */
        .story-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
            align-items: center;
        }

        @media (min-width: 768px) {
            .story-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        .story-content h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.3;
            margin-bottom: 1.25rem;
        }

        .story-content p {
            color: var(--color-text-secondary);
            line-height: 1.85;
            margin-bottom: 1.25rem;
        }

        .story-divider {
            height: 4px;
            width: 3rem;
            background: var(--color-primary);
            border-radius: 2px;
            margin: 1.5rem 0;
        }

        .story-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
        }

        .story-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 17, 23, 0.15), transparent);
            pointer-events: none;
        }

        /* 精选内容 */
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid .featured-card-lg {
                grid-column: span 2;
            }
        }

        @media (min-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .featured-grid .featured-card-lg {
                grid-column: span 2;
            }
        }

        .card {
            background-color: #fff;
            border-radius: var(--radius-card);
            border: 1px solid rgba(229, 231, 235, 0.8);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

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

        .card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background-color: #e5e7eb;
        }

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

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

        .card-badge {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background-color: rgba(245, 158, 11, 0.92);
            color: #78350f;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            backdrop-filter: blur(4px);
        }

        .card-body {
            padding: 1.5rem;
        }

        .card-body h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 0.625rem;
            transition: color 0.2s;
        }

        .card-body h3:hover {
            color: var(--color-primary);
        }

        .card-body p {
            color: var(--color-text-secondary);
            font-size: 0.875rem;
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            color: var(--color-primary);
            font-size: 0.875rem;
            font-weight: 600;
        }

        .card-link svg {
            transition: transform 0.2s;
        }

        .card-link:hover svg {
            transform: translateX(4px);
        }

        .featured-card-lg .card-image {
            aspect-ratio: 21 / 9;
        }

        /* 最新信息 CMS */
        .latest-section {
            background-color: #fff;
        }

        .latest-list {
            max-width: 48rem;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .latest-item {
            background-color: var(--color-bg);
            border-radius: 0.75rem;
            border: 1px solid rgba(229, 231, 235, 0.8);
            padding: 1.25rem 1.5rem;
            transition: box-shadow 0.2s, border-color 0.2s;
        }

        .latest-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 118, 110, 0.3);
        }

        .latest-item-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            margin-bottom: 0.5rem;
            flex-wrap: wrap;
        }

        .latest-item-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            transition: color 0.2s;
        }

        .latest-item-title:hover {
            color: var(--color-primary);
        }

        .latest-item-date {
            font-size: 0.75rem;
            color: var(--color-text-secondary);
            white-space: nowrap;
        }

        .latest-item-summary {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 0.75rem;
        }

        .latest-item-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            background-color: rgba(15, 118, 110, 0.1);
            color: var(--color-primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
        }

        .latest-empty {
            text-align: center;
            color: var(--color-text-secondary);
            padding: 3rem 1rem;
            background-color: var(--color-bg);
            border-radius: 0.75rem;
            border: 1px dashed var(--color-border);
            font-size: 0.9375rem;
        }

        .view-more-wrap {
            text-align: center;
            margin-top: 2rem;
        }

        /* 信任背书 */
        .trust-section {
            background-color: var(--color-dark);
            position: relative;
            overflow: hidden;
        }

        .trust-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

        .trust-inner {
            position: relative;
            z-index: 1;
        }

        .trust-quotes {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-bottom: 3rem;
        }

        @media (min-width: 768px) {
            .trust-quotes {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .trust-card {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 1.5rem;
        }

        .trust-card p {
            color: #e5e7eb;
            font-size: 0.9375rem;
            line-height: 1.8;
            margin-bottom: 1rem;
        }

        .trust-card .trust-name {
            color: #9ca3af;
            font-size: 0.8125rem;
            font-weight: 500;
        }

        .trust-logos {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            align-items: center;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 2rem;
        }

        .trust-logo {
            color: #6b7280;
            font-size: 1.125rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            opacity: 0.7;
            transition: opacity 0.2s;
        }

        .trust-logo:hover {
            opacity: 1;
        }

        /* FAQ */
        .faq-list {
            max-width: 42rem;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: 0.75rem;
            background-color: #fff;
            overflow: hidden;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .faq-item:hover {
            border-color: rgba(15, 118, 110, 0.4);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            color: var(--color-text);
            list-style: none;
            font-size: 0.9375rem;
        }

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

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 1.5rem;
            height: 1.5rem;
            border-radius: 9999px;
            background-color: rgba(15, 118, 110, 0.1);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: background-color 0.2s, transform 0.2s;
            font-weight: 400;
        }

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

        .faq-item .faq-answer {
            padding: 0 1.5rem 1.25rem;
            color: var(--color-text-secondary);
            font-size: 0.875rem;
            line-height: 1.8;
            border-top: 1px solid rgba(229, 231, 235, 0.6);
            padding-top: 1rem;
            margin-top: 0.5rem;
        }

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

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 36rem;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 1.75rem;
        }

        .cta-form {
            display: flex;
            gap: 0.5rem;
            max-width: 28rem;
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            background-color: rgba(255, 255, 255, 0.95);
            color: #111827;
            border-radius: 0.5rem;
            padding: 0.75rem 1.25rem;
            font-size: 0.875rem;
            border: 2px solid transparent;
            transition: border-color 0.2s, box-shadow 0.2s;
        }

        .cta-form input:focus {
            border-color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.2);
        }

        .cta-form button {
            background-color: #fff;
            color: var(--color-primary);
            font-weight: 700;
            padding: 0.75rem 1.5rem;
            border-radius: 0.5rem;
            font-size: 0.875rem;
            cursor: pointer;
            transition: transform 0.15s, box-shadow 0.2s;
            white-space: nowrap;
        }

        .cta-form button:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
        }

        .cta-form button:active {
            transform: scale(0.96);
        }

        /* 页脚 */
        .site-footer {
            background-color: var(--color-dark);
            color: #9ca3af;
            padding: 4rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 3rem;
        }

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

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            }
        }

        .footer-brand .logo {
            margin-bottom: 1rem;
        }

        .footer-brand p {
            font-size: 0.875rem;
            line-height: 1.8;
            color: #9ca3af;
            max-width: 20rem;
        }

        .footer-title {
            font-size: 0.8125rem;
            font-weight: 700;
            color: #e5e7eb;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 1rem;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-links a {
            font-size: 0.875rem;
            color: #9ca3af;
            transition: color 0.2s, padding-left 0.2s;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 0.25rem;
        }

        .footer-subscribe p {
            font-size: 0.875rem;
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .footer-subscribe-form {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .footer-subscribe-form input {
            flex: 1;
            min-width: 150px;
            background-color: var(--color-dark-2);
            color: #fff;
            border-radius: 0.5rem;
            padding: 0.625rem 1rem;
            font-size: 0.8125rem;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: border-color 0.2s;
        }

        .footer-subscribe-form input:focus {
            border-color: var(--color-primary);
        }

        .footer-subscribe-form button {
            background-color: var(--color-primary);
            color: #fff;
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 0.625rem 1.25rem;
            border-radius: 0.5rem;
            cursor: pointer;
            transition: background-color 0.2s;
        }

        .footer-subscribe-form button:hover {
            background-color: var(--color-primary-dark);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .footer-bottom .copyright {
            font-size: 0.8125rem;
            color: #6b7280;
        }

        .back-to-top {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            font-size: 0.8125rem;
            color: #9ca3af;
            padding: 0.375rem 0.75rem;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 9999px;
            transition: border-color 0.2s, color 0.2s;
        }

        .back-to-top:hover {
            border-color: rgba(255, 255, 255, 0.3);
            color: #fff;
        }

        /* 响应式 */
        @media (min-width: 768px) {
            .hero h1 {
                font-size: 3.5rem;
            }
            .hero-stats {
                grid-template-columns: repeat(4, 1fr);
            }
            .nav-search {
                order: 2;
                width: auto;
            }
            .header-cta {
                order: 3;
                margin-left: 0;
            }
        }

        @media (max-width: 640px) {
            .header-top {
                gap: 0.75rem;
            }
            .logo {
                font-size: 1.25rem;
            }
            .header-cta .btn-primary {
                padding: 0.5rem 1rem;
                font-size: 0.8125rem;
            }
            .hero {
                padding: 3rem 0 2rem;
            }
            .hero h1 {
                font-size: 1.75rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-search input {
                padding: 0.875rem 1rem 0.875rem 2.75rem;
                font-size: 0.9375rem;
            }
            .section {
                padding: 3rem 0;
            }
            .section-head h2 {
                font-size: 1.5rem;
            }
            .card-body {
                padding: 1.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0f766e;
            --color-primary-dark: #115e59;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-dark: #0d1117;
            --color-bg: #f8f6f3;
            --color-text: #1f2937;
            --color-muted: #6b7280;
            --color-border: #e5e7eb;
            --radius-card: 1rem;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.06);
            --font-sans-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans-cn);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        input,
        button {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
        }
        .container {
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background-color: var(--color-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header-top {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 0.75rem 0;
            flex-wrap: wrap;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            white-space: nowrap;
            border-radius: 0.5rem;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2rem;
            height: 2rem;
            background: var(--color-primary);
            color: #fff;
            border-radius: 0.5rem;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            transition: background 0.2s;
        }
        .logo:hover .logo-mark {
            background: var(--color-primary-dark);
        }
        .nav-search {
            flex: 1;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 0.55rem 1rem;
            color: #9ca3af;
            min-width: 220px;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .nav-search:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.3);
        }
        .nav-search input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 0.9rem;
        }
        .nav-search input::placeholder {
            color: #9ca3af;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            color: #fff;
            border-radius: 0.5rem;
            padding: 0.6rem 1.25rem;
            font-weight: 500;
            font-size: 0.9rem;
            transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: scale(0.96);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--color-border);
            color: var(--color-text);
            border-radius: 0.5rem;
            padding: 0.6rem 1.25rem;
            font-weight: 500;
            font-size: 0.9rem;
            background: #fff;
            transition: border-color 0.2s, color 0.2s, transform 0.15s, box-shadow 0.2s;
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn-outline:active {
            transform: scale(0.96);
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            color: var(--color-primary-dark);
            border-radius: 0.5rem;
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
        }
        .btn-light:hover {
            background: var(--color-accent-light);
        }
        .btn-light:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }
        .btn-light:active {
            transform: scale(0.96);
        }
        .nav-bottom {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding-bottom: 0.5rem;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .nav-bottom::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 1rem;
            color: #d1d5db;
            border-radius: 999px;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: background 0.2s, color 0.2s;
            border: 1px solid transparent;
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .nav-link.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }
        .site-main {
            overflow: hidden;
        }
        .cat-hero {
            position: relative;
            background-image: linear-gradient(rgba(13, 17, 23, 0.88), rgba(13, 17, 23, 0.72)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 5rem 0 3.5rem;
            text-align: center;
        }
        .cat-hero .badge {
            display: inline-block;
            background: var(--color-accent);
            color: #111;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 999px;
            padding: 0.3rem 0.9rem;
            margin-bottom: 1.2rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .cat-hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }
        .cat-hero .subtitle {
            font-size: 1.1rem;
            color: #cbd5e1;
            max-width: 42rem;
            margin: 0 auto 1.25rem;
        }
        .cat-hero .lead {
            font-size: 0.95rem;
            color: #9ca3af;
            max-width: 48rem;
            margin: 0 auto 2rem;
            line-height: 1.8;
        }
        .cat-hero .hero-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .section {
            padding: 4rem 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 5.5rem 0;
            }
        }
        .eyebrow {
            display: inline-block;
            background: rgba(15, 118, 110, 0.1);
            color: var(--color-primary);
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 999px;
            padding: 0.3rem 1rem;
            margin-bottom: 0.75rem;
        }
        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.1rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .section-lead {
            color: var(--color-muted);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 2rem;
        }
        .text-block p {
            color: var(--color-muted);
            line-height: 1.85;
            margin-bottom: 1rem;
        }
        .text-block p:last-child {
            margin-bottom: 0;
        }
        .cover-img {
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            width: 100%;
            object-fit: cover;
        }
        .features-grid {
            display: grid;
            gap: 1.5rem;
            grid-template-columns: 1fr;
        }
        @media (min-width: 768px) {
            .features-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .feature-card {
            background: #fff;
            border: 1px solid rgba(229, 231, 235, 0.6);
            border-radius: var(--radius-card);
            padding: 2rem 1.5rem;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 3rem;
            height: 3rem;
            background: rgba(15, 118, 110, 0.1);
            color: var(--color-primary);
            border-radius: 0.8rem;
            margin-bottom: 1rem;
        }
        .feature-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }
        .feature-card p {
            color: var(--color-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .data-strip {
            background: var(--color-dark);
            color: #fff;
            padding: 3.5rem 0;
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem 1.5rem;
            text-align: center;
        }
        @media (min-width: 768px) {
            .data-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .data-num {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }
        .data-label {
            font-size: 0.88rem;
            color: #9ca3af;
            margin-top: 0.35rem;
        }
        .faq-section {
            max-width: 48rem;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 1rem;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .faq-item:hover {
            border-color: rgba(15, 118, 110, 0.3);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            font-weight: 500;
            font-size: 1rem;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 1.5rem;
            height: 1.5rem;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.1);
            color: var(--color-primary);
            font-size: 1.1rem;
            font-weight: 600;
            flex-shrink: 0;
            transition: transform 0.3s, background 0.2s, color 0.2s;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary);
            color: #fff;
        }
        .faq-item .faq-body {
            padding: 0 1.5rem 1.25rem;
            color: var(--color-muted);
            font-size: 0.95rem;
            line-height: 1.75;
        }
        .cta-banner {
            background: linear-gradient(135deg, #0f766e, #115e59);
            color: #fff;
            padding: 4rem 0;
            text-align: center;
        }
        .cta-banner h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.85);
            max-width: 36rem;
            margin: 0 auto 2rem;
        }
        .subscribe-form {
            display: flex;
            gap: 0.75rem;
            max-width: 30rem;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 0;
            background: #fff;
            border: 1px solid transparent;
            border-radius: 0.6rem;
            padding: 0.75rem 1rem;
            color: var(--color-text);
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .subscribe-form input::placeholder {
            color: #9ca3af;
        }
        .subscribe-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
        }
        .subscribe-form button {
            background: #fff;
            color: var(--color-primary-dark);
            font-weight: 600;
            border-radius: 0.6rem;
            padding: 0.75rem 1.5rem;
            transition: background 0.2s, transform 0.15s;
            white-space: nowrap;
        }
        .subscribe-form button:hover {
            background: var(--color-accent-light);
        }
        .subscribe-form button:active {
            transform: scale(0.96);
        }
        .site-footer {
            background: var(--color-dark);
            color: #9ca3af;
            padding: 4rem 0 0;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            gap: 2rem;
            grid-template-columns: 1fr;
            padding-bottom: 3rem;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
                gap: 2.5rem;
            }
        }
        .footer-brand .logo {
            margin-bottom: 1rem;
        }
        .footer-brand p {
            color: #9ca3af;
            line-height: 1.7;
            max-width: 18rem;
            font-size: 0.9rem;
        }
        .footer-title {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .footer-links a {
            color: #9ca3af;
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-links a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 0.25rem;
        }
        .footer-subscribe p {
            margin-bottom: 1rem;
            color: #9ca3af;
        }
        .footer-subscribe-form {
            display: flex;
            gap: 0.5rem;
        }
        .footer-subscribe-form input {
            flex: 1;
            min-width: 0;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 0.5rem;
            padding: 0.6rem 0.9rem;
            color: #fff;
            outline: none;
            font-size: 0.85rem;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .footer-subscribe-form input::placeholder {
            color: #78828a;
        }
        .footer-subscribe-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.3);
        }
        .footer-subscribe-form button {
            background: var(--color-primary);
            color: #fff;
            border-radius: 0.5rem;
            padding: 0.6rem 1rem;
            font-size: 0.85rem;
            font-weight: 500;
            white-space: nowrap;
            transition: background 0.2s, transform 0.15s;
        }
        .footer-subscribe-form button:hover {
            background: var(--color-primary-dark);
        }
        .footer-subscribe-form button:active {
            transform: scale(0.96);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.25rem 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.82rem;
        }
        .back-to-top {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: #9ca3af;
            transition: color 0.2s;
        }
        .back-to-top:hover {
            color: #fff;
        }
        .back-to-top:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 0.25rem;
        }
        @media (max-width: 767px) {
            .header-top {
                flex-direction: column;
                align-items: stretch;
                gap: 0.75rem;
            }
            .header-cta {
                display: none;
            }
            .nav-search {
                width: 100%;
                min-width: 0;
            }
            .nav-bottom {
                width: 100%;
            }
            .cat-hero {
                padding: 3.5rem 0 2.5rem;
                text-align: left;
            }
            .cat-hero .hero-actions {
                justify-content: flex-start;
            }
            .cat-hero .subtitle {
                font-size: 1rem;
            }
            .cat-hero .lead {
                font-size: 0.88rem;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .data-grid {
                gap: 1.5rem 1rem;
            }
            .data-num {
                font-size: 1.7rem;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form button {
                width: 100%;
            }
            .footer-subscribe-form {
                flex-direction: column;
            }
            .footer-subscribe-form button {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .header-top {
                gap: 1rem;
            }
            .header-cta {
                display: none;
            }
            .nav-search {
                min-width: 0;
            }
        }

/* roulang page: article */
:root {
        --color-primary: #0f766e;
        --color-primary-dark: #115e56;
        --color-accent: #f59e0b;
        --color-dark: #0d1117;
        --color-bg: #f8f6f3;
        --color-text: #1f2937;
        --color-muted: #6b7280;
        --color-border: #e5e7eb;
        --radius-card: 14px;
        --shadow-card: 0 1px 3px rgba(0,0,0,.06), 0 8px 24px rgba(0,0,0,.05);
        --font-sans-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-sans-cn);
        background-color: var(--color-bg);
        color: var(--color-text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
    }

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

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

    button, input {
        font-family: inherit;
    }

    .container {
        max-width: 80rem;
        margin-left: auto;
        margin-right: auto;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    @media (min-width: 640px) {
        .container {
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
    }

    @media (min-width: 1024px) {
        .container {
            padding-left: 2rem;
            padding-right: 2rem;
        }
    }

    /* ===== 导航 ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 50;
        background-color: var(--color-dark);
        border-bottom: 1px solid rgba(255,255,255,0.08);
        box-shadow: 0 4px 20px rgba(0,0,0,.15);
    }

    .header-top {
        display: flex;
        align-items: center;
        gap: 1.25rem;
        padding: 0.875rem 0;
        flex-wrap: wrap;
    }

    .logo {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        font-weight: 700;
        font-size: 1.25rem;
        color: #fff;
        white-space: nowrap;
        flex-shrink: 0;
        transition: opacity .2s;
    }

    .logo:hover {
        opacity: .85;
    }

    .logo-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 2rem;
        height: 2rem;
        border-radius: 0.5rem;
        background: linear-gradient(135deg, var(--color-primary), #14b8a6);
        color: #fff;
        font-size: 0.8125rem;
        font-weight: 700;
        letter-spacing: 0.02em;
        flex-shrink: 0;
    }

    .nav-search {
        flex: 1;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        background: rgba(255,255,255,0.08);
        border: 1px solid rgba(255,255,255,0.12);
        border-radius: 9999px;
        padding: 0.5rem 1rem;
        min-width: 220px;
        max-width: 28rem;
        transition: border-color .2s, background-color .2s;
    }

    .nav-search:focus-within {
        border-color: var(--color-primary);
        background: rgba(255,255,255,0.13);
    }

    .nav-search svg {
        color: #9ca3af;
        flex-shrink: 0;
    }

    .nav-search input {
        flex: 1;
        background: transparent;
        border: none;
        outline: none;
        color: #fff;
        font-size: 0.875rem;
        min-width: 0;
    }

    .nav-search input::placeholder {
        color: #9ca3af;
    }

    .header-cta {
        flex-shrink: 0;
    }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background-color: var(--color-primary);
        color: #fff;
        border-radius: 0.5rem;
        padding: 0.5rem 1.25rem;
        font-size: 0.875rem;
        font-weight: 600;
        border: none;
        cursor: pointer;
        transition: background-color .2s, transform .2s, box-shadow .2s;
    }

    .btn-primary:hover {
        background-color: var(--color-primary-dark);
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(15,118,110,.25);
    }

    .btn-primary:active {
        transform: scale(.98);
    }

    .btn-primary:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }

    .btn-outline {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border: 1px solid #d1d5db;
        color: #374151;
        background: transparent;
        border-radius: 0.5rem;
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
        font-weight: 500;
        cursor: pointer;
        transition: border-color .2s, color .2s, transform .2s, background-color .2s;
    }

    .btn-outline:hover {
        border-color: var(--color-primary);
        color: var(--color-primary);
        background: rgba(15,118,110,.05);
    }

    .btn-outline:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
    }

    .nav-bottom {
        display: flex;
        gap: 0.25rem;
        padding-bottom: 0.625rem;
        overflow-x: auto;
        scrollbar-width: none;
    }

    .nav-bottom::-webkit-scrollbar {
        display: none;
    }

    .nav-link {
        color: #9ca3af;
        font-size: 0.875rem;
        padding: 0.375rem 0.75rem;
        border-radius: 0.375rem;
        white-space: nowrap;
        transition: color .2s, background-color .2s;
        flex-shrink: 0;
    }

    .nav-link:hover {
        color: #fff;
        background: rgba(255,255,255,0.06);
    }

    .nav-link:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
        color: #fff;
    }

    .nav-link.active {
        color: #fff;
        font-weight: 600;
        background: rgba(15,118,110,0.35);
    }

    @media (max-width: 767px) {
        .header-top {
            flex-wrap: wrap;
        }
        .nav-search {
            order: 3;
            max-width: 100%;
            width: 100%;
            flex-basis: 100%;
        }
        .header-cta {
            margin-left: auto;
        }
    }

    /* ===== 面包屑 ===== */
    .article-breadcrumb {
        padding: 1.25rem 0 1rem;
        font-size: 0.8125rem;
        color: var(--color-muted);
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 0;
    }

    .article-breadcrumb a {
        color: var(--color-muted);
        transition: color .2s;
    }

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

    .article-breadcrumb .sep {
        margin: 0 0.5rem;
        color: #d1d5db;
        user-select: none;
    }

    .article-breadcrumb .current {
        color: var(--color-text);
        font-weight: 500;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        max-width: 320px;
    }

    /* ===== 文章卡片 ===== */
    .article-card {
        background: #fff;
        border-radius: var(--radius-card);
        border: 1px solid var(--color-border);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        margin-bottom: 2.5rem;
    }

    .article-header {
        padding: 2.5rem 1.5rem 0;
    }

    @media (min-width: 768px) {
        .article-header {
            padding: 3rem 3rem 0;
        }
    }

    .article-title {
        font-size: 1.75rem;
        line-height: 1.35;
        font-weight: 700;
        letter-spacing: -0.02em;
        color: var(--color-dark);
        margin-bottom: 1.25rem;
    }

    @media (min-width: 768px) {
        .article-title {
            font-size: 2.25rem;
        }
    }

    .article-meta {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem 1.5rem;
        font-size: 0.8125rem;
        color: var(--color-muted);
        align-items: center;
        padding-bottom: 1.5rem;
        border-bottom: 1px solid var(--color-border);
    }

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

    .meta-item svg {
        width: 15px;
        height: 15px;
        color: #9ca3af;
    }

    .category-badge {
        display: inline-flex;
        align-items: center;
        background: #fef3c7;
        color: #b45309;
        border-radius: 9999px;
        padding: 0.25rem 0.75rem;
        font-size: 0.75rem;
        font-weight: 600;
        line-height: 1.4;
    }

    /* ===== 正文排版 ===== */
    .article-body {
        padding: 2rem 1.5rem 1rem;
        font-size: 1.0625rem;
        line-height: 2;
        color: var(--color-text);
        max-width: 48rem;
        margin: 0 auto;
    }

    @media (min-width: 768px) {
        .article-body {
            padding: 2.5rem 3rem 1rem;
        }
    }

    .article-body h2 {
        font-size: 1.5rem;
        font-weight: 700;
        margin: 2.5rem 0 1rem;
        color: var(--color-dark);
        line-height: 1.4;
        letter-spacing: -0.01em;
    }

    .article-body h3 {
        font-size: 1.25rem;
        font-weight: 600;
        margin: 2rem 0 0.75rem;
        color: var(--color-dark);
        line-height: 1.5;
    }

    .article-body p {
        margin-bottom: 1.5rem;
    }

    .article-body blockquote {
        border-left: 3px solid var(--color-primary);
        background: #f9fafb;
        padding: 1rem 1.5rem;
        margin: 1.75rem 0;
        color: #4b5563;
        border-radius: 0 0.5rem 0.5rem 0;
        font-size: 1rem;
    }

    .article-body ul,
    .article-body ol {
        margin: 1rem 0 1.5rem;
        padding-left: 1.5rem;
    }

    .article-body ul {
        list-style: disc;
    }

    .article-body ol {
        list-style: decimal;
    }

    .article-body li {
        margin-bottom: 0.5rem;
        padding-left: 0.25rem;
    }

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

    .article-body img {
        border-radius: 0.75rem;
        margin: 1.75rem auto;
        box-shadow: 0 4px 16px rgba(0,0,0,.06);
    }

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

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

    .article-body code {
        background: #f3f4f6;
        border-radius: 0.25rem;
        padding: 0.125rem 0.375rem;
        font-size: 0.9em;
        font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
    }

    .article-body pre {
        background: var(--color-dark);
        color: #e5e7eb;
        border-radius: 0.75rem;
        padding: 1.25rem 1.5rem;
        overflow-x: auto;
        margin: 1.75rem 0;
        font-size: 0.875rem;
        line-height: 1.8;
    }

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

    /* ===== 文章底部导航 ===== */
    .article-footer-nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
        padding: 1.5rem 1.5rem 2rem;
        max-width: 48rem;
        margin: 0 auto;
        flex-wrap: wrap;
    }

    @media (min-width: 768px) {
        .article-footer-nav {
            padding: 1.5rem 3rem 2.5rem;
        }
    }

    /* ===== 空态 ===== */
    .article-not-found {
        text-align: center;
        padding: 4rem 1.5rem;
    }

    .article-not-found .not-found-icon {
        width: 56px;
        height: 56px;
        margin: 0 auto 1.25rem;
        border-radius: 9999px;
        background: #f3f4f6;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #9ca3af;
    }

    .article-not-found h1 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--color-dark);
        margin-bottom: 0.5rem;
    }

    .article-not-found p {
        color: var(--color-muted);
        font-size: 0.9375rem;
        margin-bottom: 1.5rem;
    }

    /* ===== 相关推荐 ===== */
    .related-section {
        padding: 3rem 0 4rem;
        border-top: 1px solid var(--color-border);
        background: var(--color-bg);
    }

    .related-header {
        margin-bottom: 1.5rem;
    }

    .related-grid {
        display: grid;
        grid-template-columns: repeat(1, 1fr);
        gap: 1.25rem;
    }

    @media (min-width: 768px) {
        .related-grid {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    .related-card {
        background: #fff;
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }

    .related-card:hover {
        transform: translateY(-3px);
        box-shadow: 0 12px 32px rgba(0,0,0,.08);
        border-color: rgba(15,118,110,.3);
    }

    .related-card .related-thumb {
        aspect-ratio: 16 / 9;
        width: 100%;
        object-fit: cover;
        background: #e5e7eb;
    }

    .related-card .related-body {
        padding: 1.25rem;
        display: flex;
        flex-direction: column;
        flex: 1;
        gap: 0.5rem;
    }

    .related-card h3 {
        font-size: 1rem;
        font-weight: 600;
        line-height: 1.55;
        color: var(--color-dark);
    }

    .related-card h3 a {
        transition: color .2s;
    }

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

    .related-card p {
        font-size: 0.8125rem;
        color: var(--color-muted);
        line-height: 1.6;
        margin-top: auto;
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background-color: var(--color-dark);
        color: #d1d5db;
        padding-top: 3rem;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: repeat(1, 1fr);
        gap: 2rem;
        padding-bottom: 2.5rem;
    }

    @media (min-width: 768px) {
        .footer-grid {
            grid-template-columns: repeat(4, 1fr);
        }
    }

    .footer-brand p {
        font-size: 0.875rem;
        color: #9ca3af;
        margin-top: 0.75rem;
        line-height: 1.7;
    }

    .footer-title {
        color: #fff;
        font-size: 0.9375rem;
        font-weight: 600;
        margin-bottom: 1rem;
        letter-spacing: 0.01em;
    }

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

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

    .footer-links a {
        color: #9ca3af;
        font-size: 0.875rem;
        transition: color .2s;
        display: inline-flex;
        align-items: center;
        gap: 0.25rem;
    }

    .footer-links a:hover {
        color: #fff;
    }

    .footer-links a:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
        border-radius: 2px;
    }

    .footer-subscribe p {
        font-size: 0.875rem;
        color: #9ca3af;
        margin-bottom: 0.75rem;
        line-height: 1.6;
    }

    .footer-subscribe-form {
        display: flex;
        gap: 0.5rem;
    }

    .footer-subscribe-form input {
        flex: 1;
        padding: 0.5rem 0.75rem;
        border-radius: 0.5rem;
        border: 1px solid rgba(255,255,255,0.15);
        background: rgba(255,255,255,0.08);
        color: #fff;
        font-size: 0.875rem;
        outline: none;
        min-width: 0;
        transition: border-color .2s, background-color .2s;
    }

    .footer-subscribe-form input::placeholder {
        color: #6b7280;
    }

    .footer-subscribe-form input:focus {
        border-color: var(--color-primary);
        background: rgba(255,255,255,0.12);
    }

    .footer-subscribe-form button {
        padding: 0.5rem 1rem;
        border-radius: 0.5rem;
        background: var(--color-primary);
        color: #fff;
        font-size: 0.875rem;
        font-weight: 500;
        cursor: pointer;
        border: none;
        transition: background-color .2s, transform .2s;
        flex-shrink: 0;
    }

    .footer-subscribe-form button:hover {
        background: var(--color-primary-dark);
    }

    .footer-subscribe-form button:active {
        transform: scale(.97);
    }

    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.1);
        padding: 1.25rem 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 0.5rem 1rem;
        font-size: 0.8125rem;
        color: #6b7280;
    }

    .copyright {
        color: #6b7280;
    }

    .back-to-top {
        display: inline-flex;
        align-items: center;
        gap: 0.25rem;
        color: #9ca3af;
        font-size: 0.8125rem;
        transition: color .2s;
    }

    .back-to-top:hover {
        color: #fff;
    }

    .back-to-top:focus-visible {
        outline: 2px solid var(--color-primary);
        outline-offset: 2px;
        border-radius: 4px;
    }

    /* ===== 响应式微调 ===== */
    @media (max-width: 520px) {
        .article-title {
            font-size: 1.5rem;
        }
        .article-body {
            font-size: 1rem;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        .article-meta {
            gap: 0.75rem 1rem;
        }
        .related-grid {
            grid-template-columns: 1fr;
        }
        .footer-grid {
            gap: 1.5rem;
        }
        .footer-bottom {
            flex-direction: column;
            justify-content: center;
            text-align: center;
        }
    }

/* roulang page: category2 */
:root {
            --color-primary: #0f766e;
            --color-accent: #f59e0b;
            --color-dark: #0d1117;
            --color-bg: #f8f6f3;
            --color-border: #e5e7eb;
            --color-text: #1f2937;
            --color-muted: #6b7280;
            --radius-card: 1rem;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
            --font-sans-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans-cn);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== Header ===== */
        .site-header {
            background-color: var(--color-dark);
            position: sticky;
            top: 0;
            z-index: 50;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .header-top {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            padding: 0.85rem 0;
            flex-wrap: wrap;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            color: #fff;
            font-weight: 700;
            font-size: 1.25rem;
            white-space: nowrap;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--color-primary), #134e4a);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 800;
            width: 2.2rem;
            height: 2.2rem;
            border-radius: 0.6rem;
            letter-spacing: 0.02em;
            box-shadow: 0 2px 8px rgba(15, 118, 110, 0.4);
        }
        .nav-search {
            flex: 1;
            min-width: 220px;
            max-width: 520px;
            display: flex;
            align-items: center;
            gap: 0.6rem;
            background-color: rgba(255, 255, 255, 0.09);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            padding: 0.55rem 1.1rem;
            transition: border-color 0.2s, background-color 0.2s;
        }
        .nav-search svg {
            color: rgba(255, 255, 255, 0.6);
            flex-shrink: 0;
        }
        .nav-search input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 0.9rem;
            width: 100%;
        }
        .nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .nav-search:focus-within {
            border-color: rgba(15, 118, 110, 0.7);
            background-color: rgba(255, 255, 255, 0.14);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.25);
        }
        .header-cta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: var(--color-primary);
            color: #fff;
            font-size: 0.875rem;
            font-weight: 600;
            border-radius: 0.6rem;
            padding: 0.6rem 1.4rem;
            transition: background-color 0.2s, transform 0.15s, box-shadow 0.2s;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background-color: #115e59;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(15, 118, 110, 0.35);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: scale(0.97);
        }
        .nav-bottom {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.4rem 0 0.75rem;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-bottom::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            color: rgba(255, 255, 255, 0.72);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 0.45rem 1rem;
            border-radius: 999px;
            white-space: nowrap;
            transition: color 0.2s, background-color 0.2s;
        }
        .nav-link:hover {
            color: #fff;
            background-color: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
            background-color: rgba(15, 118, 110, 0.4);
            font-weight: 600;
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
        }
        @media (max-width: 767px) {
            .header-top {
                gap: 0.8rem;
                padding: 0.7rem 0;
            }
            .nav-search {
                order: 3;
                max-width: 100%;
                min-width: 100%;
                margin-top: 0.3rem;
            }
            .header-cta .btn-primary {
                font-size: 0.8rem;
                padding: 0.5rem 1rem;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            background-color: var(--color-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 4.5rem 0 4rem;
            color: #fff;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(13, 17, 23, 0.92) 30%, rgba(13, 17, 23, 0.65) 70%, rgba(13, 17, 23, 0.45));
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.4rem;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 1rem;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }
        .page-banner h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin: 0 0 0.75rem;
        }
        .page-banner h1 span {
            color: var(--color-accent);
        }
        .page-banner .banner-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 44rem;
            line-height: 1.8;
            margin: 0;
        }
        @media (max-width: 767px) {
            .page-banner {
                padding: 2.8rem 0 2.5rem;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner .banner-desc {
                font-size: 0.95rem;
            }
        }

        /* ===== Section ===== */
        .section {
            padding: 5rem 0;
        }
        .section-light {
            background-color: #fff;
        }
        .section-dark {
            background-color: var(--color-dark);
            color: #fff;
        }
        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin: 0 0 0.5rem;
            text-align: center;
        }
        .section-title span {
            color: var(--color-primary);
        }
        .section-subtitle {
            text-align: center;
            color: var(--color-muted);
            font-size: 1rem;
            max-width: 36rem;
            margin: 0 auto 2.8rem;
            line-height: 1.7;
        }
        @media (max-width: 767px) {
            .section {
                padding: 3.5rem 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }

        /* ===== Service Scope Cards ===== */
        .scope-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
        }
        .scope-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.25s, box-shadow 0.25s;
            display: flex;
            flex-direction: column;
        }
        .scope-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.09);
        }
        .scope-card .card-img {
            aspect-ratio: 16/10;
            overflow: hidden;
        }
        .scope-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .scope-card:hover .card-img img {
            transform: scale(1.04);
        }
        .scope-card .card-body {
            padding: 1.6rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .scope-card .card-badge {
            display: inline-flex;
            align-self: flex-start;
            background-color: rgba(245, 158, 11, 0.12);
            color: #b45309;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 999px;
            padding: 0.25rem 0.8rem;
            margin-bottom: 0.8rem;
        }
        .scope-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 0.6rem;
            color: var(--color-text);
        }
        .scope-card p {
            font-size: 0.9rem;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0 0 1rem;
        }
        .scope-card .card-link {
            margin-top: auto;
            color: var(--color-primary);
            font-size: 0.875rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            transition: gap 0.2s;
        }
        .scope-card .card-link:hover {
            gap: 0.6rem;
        }
        @media (max-width: 767px) {
            .scope-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (min-width: 768px) and (max-width: 1023px) {
            .scope-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scope-card:last-child {
                grid-column: span 2;
            }
        }

        /* ===== Timeline ===== */
        .timeline-wrap {
            max-width: 52rem;
            margin: 0 auto;
        }
        .timeline {
            position: relative;
            padding-left: 2.2rem;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 0.75rem;
            top: 0.5rem;
            bottom: 0.5rem;
            width: 2px;
            background: linear-gradient(to bottom, var(--color-primary), rgba(15, 118, 110, 0.15));
        }
        .timeline-item {
            position: relative;
            margin-bottom: 2.2rem;
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 1.6rem 1.8rem;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
            transition: box-shadow 0.25s, transform 0.25s;
        }
        .timeline-item:hover {
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            transform: translateY(-2px);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -1.8rem;
            top: 1.6rem;
            width: 0.9rem;
            height: 0.9rem;
            border-radius: 999px;
            background: var(--color-primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--color-primary);
        }
        .timeline-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2rem;
            height: 2rem;
            background-color: var(--color-primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 800;
            border-radius: 999px;
            margin-bottom: 0.75rem;
        }
        .timeline-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 0.4rem;
        }
        .timeline-item p {
            font-size: 0.92rem;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0 0 0.5rem;
        }
        .timeline-meta {
            font-size: 0.82rem;
            color: var(--color-primary);
            font-weight: 600;
        }
        @media (max-width: 767px) {
            .timeline {
                padding-left: 1.6rem;
            }
            .timeline-item {
                padding: 1.2rem;
            }
            .timeline-item::before {
                left: -1.35rem;
            }
        }

        /* ===== Metrics / Data ===== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .metric-item {
            text-align: center;
            padding: 1.5rem 1rem;
        }
        .metric-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .metric-number small {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-accent);
        }
        .metric-label {
            margin-top: 0.5rem;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        @media (max-width: 767px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .metric-number {
                font-size: 1.8rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 45rem;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: 0.8rem;
            margin-bottom: 0.9rem;
            overflow: hidden;
            transition: border-color 0.25s, box-shadow 0.25s;
        }
        .faq-item:hover {
            border-color: rgba(15, 118, 110, 0.3);
        }
        .faq-item[open] {
            border-color: var(--color-primary);
            box-shadow: 0 4px 16px rgba(15, 118, 110, 0.08);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.4rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            list-style: none;
            transition: background-color 0.2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background-color: rgba(15, 118, 110, 0.04);
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 1.6rem;
            height: 1.6rem;
            border-radius: 999px;
            background-color: rgba(15, 118, 110, 0.1);
            color: var(--color-primary);
            font-size: 1rem;
            font-weight: 700;
            transition: transform 0.3s, background-color 0.3s;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(135deg);
            background-color: var(--color-primary);
            color: #fff;
        }
        .faq-answer {
            padding: 0.2rem 1.4rem 1.2rem;
            font-size: 0.92rem;
            color: var(--color-muted);
            line-height: 1.8;
        }
        .faq-answer p {
            margin: 0.4rem 0;
        }

        /* ===== CTA / Related ===== */
        .cta-section {
            background-color: #fff;
            border-top: 1px solid var(--color-border);
            padding: 4.5rem 0;
        }
        .cta-box {
            background: linear-gradient(135deg, #0f766e 0%, #134e4a 100%);
            border-radius: 1.2rem;
            padding: 3rem 2.5rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            right: -3rem;
            top: -3rem;
            width: 10rem;
            height: 10rem;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 0.6rem;
        }
        .cta-box p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 32rem;
            margin: 0 auto 1.6rem;
            line-height: 1.7;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            padding: 0.7rem 1.8rem;
            border-radius: 0.7rem;
            font-size: 0.95rem;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
        }
        .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
        }
        .related-links {
            max-width: 40rem;
            margin: 2.5rem auto 0;
        }
        .related-links h3 {
            font-size: 1rem;
            font-weight: 700;
            text-align: center;
            color: var(--color-muted);
            margin-bottom: 1rem;
        }
        .related-links .link-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.6rem;
        }
        .related-links .link-pill {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--color-bg);
            border: 1px solid var(--color-border);
            border-radius: 999px;
            padding: 0.45rem 1.1rem;
            color: var(--color-text);
            transition: border-color 0.2s, color 0.2s, background-color 0.2s;
        }
        .related-links .link-pill:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(15, 118, 110, 0.05);
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: var(--color-dark);
            color: rgba(255, 255, 255, 0.7);
            padding-top: 3.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
        }
        .footer-brand .logo {
            margin-bottom: 0.8rem;
        }
        .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin: 0.4rem 0 0;
        }
        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 1rem;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }
        .footer-links a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s;
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-subscribe p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.55);
            margin: 0 0 1rem;
        }
        .footer-subscribe-form {
            display: flex;
            gap: 0.5rem;
        }
        .footer-subscribe-form input {
            flex: 1;
            min-width: 0;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 0.6rem;
            padding: 0.6rem 1rem;
            color: #fff;
            font-size: 0.85rem;
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .footer-subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-subscribe-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.3);
        }
        .footer-subscribe-form button {
            background-color: var(--color-primary);
            color: #fff;
            border: none;
            border-radius: 0.6rem;
            padding: 0.6rem 1.2rem;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s, transform 0.15s;
            white-space: nowrap;
        }
        .footer-subscribe-form button:hover {
            background-color: #115e59;
        }
        .footer-subscribe-form button:active {
            transform: scale(0.96);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.2rem 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .copyright {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .back-to-top {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s;
        }
        .back-to-top:hover {
            color: var(--color-accent);
        }
        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }
        }

        /* ===== Process note strip ===== */
        .note-strip {
            background-color: rgba(15, 118, 110, 0.06);
            border-left: 3px solid var(--color-primary);
            border-radius: 0.5rem;
            padding: 1rem 1.4rem;
            font-size: 0.88rem;
            color: var(--color-text);
            line-height: 1.7;
            max-width: 52rem;
            margin: 0 auto 2.5rem;
        }
        .note-strip strong {
            color: var(--color-primary);
        }