/* roulang page: index */
:root {
            --color-primary: #0F766E;
            --color-primary-dark: #0B4F4A;
            --color-primary-light: #CCFBF1;
            --color-primary-xlight: #F0FDFA;
            --color-accent: #F59E0B;
            --color-accent-dark: #D97706;
            --color-text: #1F2937;
            --color-text-secondary: #6B7280;
            --color-border: #E5E7EB;
            --color-bg: #F9FAFB;
            --color-card: #FFFFFF;
            --color-footer: #0B3B3A;
            --radius-card: 16px;
            --radius-btn: 12px;
            --shadow-card: 0 1px 2px rgba(15, 118, 110, 0.04), 0 8px 24px rgba(15, 118, 110, 0.08);
            --shadow-card-hover: 0 4px 8px rgba(15, 118, 110, 0.06), 0 16px 32px rgba(15, 118, 110, 0.10);
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 80rem;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 768px) {
            .container-custom {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding-top: 6rem;
                padding-bottom: 6rem;
            }
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius-btn);
            border: 2px solid transparent;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
            font-size: 0.95rem;
            line-height: 1.5;
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(217, 119, 6, 0.3);
        }
        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.25);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(217, 119, 6, 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius-btn);
            border: 2px solid var(--color-primary);
            transition: all 0.3s ease;
            font-size: 0.95rem;
            line-height: 1.5;
        }
        .btn-outline:hover {
            background: rgba(15, 118, 110, 0.08);
            transform: translateY(-1px);
        }
        .btn-outline:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.15);
        }

        .card-hover {
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .card-hover:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.9rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--color-primary-light);
            color: var(--color-primary);
            letter-spacing: 0.02em;
        }

        .section-head {
            text-align: center;
            margin-bottom: 3rem;
        }
        .section-head .section-tag {
            display: inline-block;
            padding: 0.25rem 1rem;
            border-radius: 9999px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 1rem;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--color-text);
            line-height: 1.25;
            margin-bottom: 0.75rem;
        }
        .section-head p {
            color: var(--color-text-secondary);
            font-size: 1rem;
            max-width: 36rem;
            margin: 0 auto;
            line-height: 1.7;
        }
        @media (min-width: 768px) {
            .section-head h2 {
                font-size: 2.25rem;
            }
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #F0FDFA 0%, #FFFFFF 50%, #CCFBF1 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.04;
            pointer-events: none;
        }

        /* Phone mockup */
        .phone-mock {
            width: 320px;
            max-width: 90%;
            background: #FFFFFF;
            border-radius: 28px;
            box-shadow: 0 8px 24px rgba(15, 118, 110, 0.08), 0 24px 64px rgba(15, 118, 110, 0.12);
            padding: 12px;
            position: relative;
            z-index: 2;
            border: 1px solid rgba(255, 255, 255, 0.8);
            margin: 0 auto;
        }
        .phone-screen {
            border-radius: 20px;
            overflow: hidden;
            position: relative;
            background: var(--color-primary-dark);
            aspect-ratio: 4/5;
        }
        .phone-screen img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.85;
        }
        .phone-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 79, 74, 0.05) 0%, rgba(11, 79, 74, 0.55) 100%);
        }
        .phone-content {
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: 24px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-radius: 16px;
            padding: 18px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
        }
        .phone-brand-label {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            display: block;
        }
        .phone-field {
            height: 34px;
            border-radius: 8px;
            background: #F3F4F6;
            border: 1px solid #E5E7EB;
            margin-bottom: 10px;
        }
        .phone-login-btn {
            height: 36px;
            border-radius: 8px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 4px;
        }
        .phone-notch {
            position: absolute;
            top: 8px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 6px;
            border-radius: 9999px;
            background: rgba(255, 255, 255, 0.8);
        }

        .float-badge {
            position: absolute;
            background: #FFFFFF;
            border-radius: 12px;
            padding: 10px 16px;
            box-shadow: 0 4px 16px rgba(15, 118, 110, 0.12);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text);
            z-index: 3;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .float-badge .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 9999px;
            background: #22C55E;
            display: inline-block;
            position: relative;
        }
        .float-badge .status-dot::after {
            content: '';
            position: absolute;
            inset: -4px;
            border-radius: 9999px;
            background: rgba(34, 197, 94, 0.3);
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%, 100% {
                transform: scale(0.7);
                opacity: 0.6;
            }
            50% {
                transform: scale(1.2);
                opacity: 0.1;
            }
        }
        .float-badge-1 {
            top: 20%;
            right: 2%;
        }
        .float-badge-2 {
            bottom: 18%;
            left: 0;
        }

        .deco-circle {
            position: absolute;
            border-radius: 9999px;
            background: rgba(204, 251, 241, 0.5);
            z-index: 1;
        }
        .deco-circle-1 {
            width: 120px;
            height: 120px;
            top: 10%;
            left: 15%;
        }
        .deco-circle-2 {
            width: 80px;
            height: 80px;
            bottom: 20%;
            right: 10%;
            background: rgba(245, 158, 11, 0.1);
        }

        /* Timeline */
        .timeline-wrap {
            position: relative;
            padding-left: 0;
        }
        .timeline-line {
            position: absolute;
            left: 19px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-primary-light);
        }
        .timeline-item {
            position: relative;
            padding-left: 56px;
            margin-bottom: 32px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-node {
            position: absolute;
            left: 0;
            top: 0;
            width: 40px;
            height: 40px;
            border-radius: 9999px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(15, 118, 110, 0.3);
            z-index: 2;
        }
        @media (min-width: 768px) {
            .timeline-line {
                left: 24px;
            }
            .timeline-item {
                padding-left: 68px;
            }
            .timeline-node {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
        }
        .timeline-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 1.25rem;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .timeline-card:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .timeline-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0.35rem;
            line-height: 1.4;
        }
        .timeline-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            margin-bottom: 0.5rem;
        }
        .timeline-card .learn-more {
            font-size: 0.85rem;
            color: var(--color-primary);
            font-weight: 500;
            transition: color 0.2s;
        }
        .timeline-card .learn-more:hover {
            color: var(--color-primary-dark);
        }

        /* Stats */
        .stats-section {
            position: relative;
            padding: 5rem 0;
        }
        .stats-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
        }
        .stats-section .stats-card {
            background: #FFFFFF;
            border-radius: 16px;
            padding: 1.75rem 1.25rem;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            height: 100%;
        }
        .stats-section .stats-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .stats-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.2;
        }
        @media (min-width: 768px) {
            .stats-number {
                font-size: 2.5rem;
            }
        }
        .stats-label {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            margin-top: 0.35rem;
            font-weight: 500;
        }
        .stats-unit {
            font-size: 1.1rem;
            color: var(--color-accent);
            font-weight: 700;
            margin-left: 2px;
        }

        /* Compare */
        .compare-card {
            background: #FFFFFF;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .compare-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .compare-card.enterprise {
            border: 2px solid var(--color-accent);
        }
        .compare-card.basic {
            border: 2px solid #E5E7EB;
        }
        .compare-recommend {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--color-accent);
            color: #FFFFFF;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 0.85rem;
            border-radius: 9999px;
            letter-spacing: 0.03em;
            z-index: 2;
        }
        .compare-body {
            padding: 1.75rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .compare-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--color-text);
        }
        .compare-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin-bottom: 1.25rem;
            line-height: 1.6;
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0 0 1.5rem;
            flex: 1;
        }
        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            padding: 0.4rem 0;
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.5;
        }
        .compare-check {
            color: var(--color-primary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .compare-minus {
            color: #9CA3AF;
            flex-shrink: 0;
        }

        /* CTA Form */
        .cta-section {
            background: var(--color-primary-dark);
            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: 0.1;
        }
        .login-card {
            background: #FFFFFF;
            border-radius: 16px;
            padding: 2rem;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
            max-width: 440px;
            width: 100%;
        }
        .login-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.3rem;
        }
        .login-card .login-sub {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin-bottom: 1.5rem;
        }
        .form-group {
            margin-bottom: 1rem;
        }
        .form-group label {
            display: block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0.35rem;
        }
        .form-input {
            width: 100%;
            height: 44px;
            border: 1px solid #D1D5DB;
            border-radius: 10px;
            padding: 0 0.9rem;
            font-size: 0.95rem;
            color: var(--color-text);
            outline: none;
            transition: all 0.2s ease;
            background: #F9FAFB;
        }
        .form-input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.1);
            background: #FFFFFF;
        }
        .form-input::placeholder {
            color: #9CA3AF;
        }
        .captcha-row {
            display: flex;
            gap: 0.75rem;
        }
        .captcha-row .form-input {
            flex: 1;
        }
        .captcha-box {
            width: 100px;
            height: 44px;
            border: 2px dashed #D1D5DB;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-weight: 700;
            letter-spacing: 0.15em;
            color: var(--color-primary);
            background: var(--color-primary-xlight);
            flex-shrink: 0;
        }

        /* News */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 860px;
            margin: 0 auto;
        }
        .news-card {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            background: #FFFFFF;
            border-radius: 12px;
            padding: 1.25rem 1.5rem;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            border-left: 3px solid var(--color-primary);
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .news-cat {
            flex-shrink: 0;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            white-space: nowrap;
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-body h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0.2rem;
            line-height: 1.4;
            transition: color 0.2s;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .news-card:hover .news-body h3 {
            color: var(--color-primary);
        }
        .news-body p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .news-time {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--color-text-secondary);
            white-space: nowrap;
        }
        .news-empty {
            text-align: center;
            padding: 3rem 1rem;
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            color: var(--color-text-secondary);
            font-size: 0.95rem;
        }
        .news-empty i {
            font-size: 2rem;
            color: #D1D5DB;
            margin-bottom: 0.5rem;
            display: block;
        }
        @media (max-width: 640px) {
            .news-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 1rem 1.25rem;
                gap: 0.5rem;
            }
            .news-time {
                align-self: flex-end;
            }
            .news-body h3,
            .news-body p {
                white-space: normal;
            }
            .news-body p {
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }
        }

        /* FAQ */
        .faq-item {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            margin-bottom: 0.85rem;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1.1rem 1.4rem;
            background: transparent;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            transition: color 0.2s;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 9999px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
            transition: all 0.3s ease;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 1.4rem;
            border-top: 0 solid var(--color-border);
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 1.4rem 1.2rem;
            border-top-width: 1px;
        }
        .faq-answer p {
            padding-top: 1rem;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* Nav */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.8);
            position: sticky;
            top: 0;
            z-index: 50;
            height: 72px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .nav-logo-text {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            padding: 0.4rem 0.25rem;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
            line-height: 1.5;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
            font-weight: 600;
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.8rem;
            color: #059669;
            font-weight: 500;
            white-space: nowrap;
        }
        .status-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 9999px;
            background: #22C55E;
            position: relative;
        }
        .status-badge .dot::after {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 9999px;
            background: rgba(34, 197, 94, 0.4);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        /* Footer */
        .site-footer {
            background: var(--color-footer);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 3.5rem;
        }
        .footer-heading {
            font-size: 0.9rem;
            font-weight: 700;
            color: #FFFFFF;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 1rem;
        }
        .footer-link {
            font-size: 0.85rem;
            color: rgba(204, 251, 241, 0.65);
            line-height: 2;
            transition: color 0.2s;
            display: block;
        }
        .footer-link:hover {
            color: #FFFFFF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.25rem 0;
            margin-top: 2.5rem;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #FFFFFF;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            padding: 1rem 1.5rem;
            z-index: 49;
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 0.75rem 0;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid #F3F4F6;
            transition: color 0.2s;
        }
        .mobile-menu a:hover {
            color: var(--color-primary);
        }
        .mobile-menu a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        @media (max-width: 767px) {
            .desktop-nav {
                display: none;
            }
            .mobile-toggle {
                display: flex;
            }
        }
        @media (min-width: 768px) {
            .mobile-toggle {
                display: none;
            }
        }

        /* Images cover card */
        .cover-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

/* roulang page: article */
:root {
            --color-primary: #0F766E;
            --color-primary-dark: #0B4F4A;
            --color-primary-light: #CCFBF1;
            --color-primary-50: #F0FDFA;
            --color-accent: #F59E0B;
            --color-accent-dark: #D97706;
            --color-text: #1F2937;
            --color-text-secondary: #6B7280;
            --color-border: #E5E7EB;
            --color-bg: #F9FAFB;
            --color-card: #FFFFFF;
            --shadow-card: 0 1px 2px rgb(15 118 110 / 0.04), 0 8px 24px rgb(15 118 110 / 0.08);
            --shadow-card-hover: 0 4px 8px rgb(15 118 110 / 0.06), 0 16px 32px rgb(15 118 110 / 0.10);
            --radius: 16px;
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 16px;
        }
        @media (min-width: 768px) {
            .container-custom {
                padding: 0 24px;
            }
        }
        @media (min-width: 1024px) {
            .container-custom {
                padding: 0 32px;
            }
        }

        /* ===== Header/Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.7);
            box-shadow: 0 1px 3px rgb(15 118 110 / 0.04);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            padding: 6px 2px;
            position: relative;
            transition: color 0.3s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 3px;
            border-radius: 3px;
            background: var(--color-primary);
        }
        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #ECFDF5;
            border: 1px solid #A7F3D0;
            color: #065F46;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .status-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 999px;
            background: #10B981;
            display: inline-block;
            animation: pulse 2s ease-in-out infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: 10px;
            border: none;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 1px 2px rgb(245 158 11 / 0.2), 0 4px 12px rgb(245 158 11 / 0.15);
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 8px rgb(245 158 11 / 0.25), 0 8px 20px rgb(245 158 11 / 0.2);
        }
        .btn-primary:focus-visible {
            outline: 4px solid rgba(245, 158, 11, 0.3);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 8px 22px;
            border-radius: 10px;
            cursor: pointer;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        .btn-outline:hover {
            background: rgba(15, 118, 110, 0.08);
            transform: translateY(-1px);
        }
        .btn-outline:focus-visible {
            outline: 4px solid rgba(15, 118, 110, 0.2);
            outline-offset: 2px;
        }
        .mobile-toggle {
            background: transparent;
            border: 1px solid var(--color-border);
            color: var(--color-text);
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .mobile-toggle:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            z-index: 99;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 8px 24px rgb(0 0 0 / 0.06);
            padding: 16px 20px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 12px 10px;
            font-size: 15px;
            color: var(--color-text);
            text-decoration: none;
            border-radius: 8px;
            font-weight: 500;
            transition: all 0.2s;
        }
        .mobile-menu a:hover {
            background: var(--color-primary-50);
            color: var(--color-primary);
        }
        .mobile-menu a.active {
            background: var(--color-primary-50);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== Article layout ===== */
        .article-main {
            padding-top: 130px;
            padding-bottom: 80px;
            min-height: 60vh;
        }
        .article-container {
            max-width: 720px;
            margin: 0 auto;
            padding: 0 16px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: #9CA3AF;
        }
        .article-header {
            margin-bottom: 32px;
        }
        .article-header h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.02em;
            color: var(--color-text);
            margin-bottom: 16px;
        }
        @media (min-width: 768px) {
            .article-header h1 {
                font-size: 38px;
            }
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px 20px;
            font-size: 13px;
            color: var(--color-text-secondary);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--color-border);
        }
        .article-badge {
            display: inline-flex;
            align-items: center;
            background: var(--color-primary-light);
            color: var(--color-primary);
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            line-height: 1.5;
        }
        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.8;
            color: #374151;
            padding-top: 8px;
        }
        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 28px auto;
            box-shadow: var(--shadow-card);
        }
        .article-content figure {
            margin: 32px 0;
        }
        .article-content figure img {
            margin-bottom: 8px;
        }
        .article-content figcaption {
            font-size: 13px;
            color: var(--color-text-secondary);
            text-align: center;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
            margin: 36px 0 14px;
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text);
            margin: 28px 0 12px;
            line-height: 1.4;
        }
        .article-content p {
            margin-bottom: 20px;
        }
        .article-content a {
            color: var(--color-primary);
            text-decoration: none;
            border-bottom: 1px solid rgba(15, 118, 110, 0.3);
            transition: border-color 0.2s;
        }
        .article-content a:hover {
            border-bottom-color: var(--color-primary);
        }
        .article-content blockquote {
            margin: 28px 0;
            padding: 16px 24px;
            border-left: 4px solid var(--color-primary);
            background: var(--color-primary-50);
            border-radius: 0 8px 8px 0;
            color: #1F2937;
            font-size: 15px;
        }
        .article-content ul,
        .article-content ol {
            margin: 16px 0 24px;
            padding-left: 24px;
        }
        .article-content ul li,
        .article-content ol li {
            margin-bottom: 8px;
        }
        .article-content ul li::marker {
            color: var(--color-primary);
        }
        .article-content ol li::marker {
            color: var(--color-primary);
            font-weight: 600;
        }
        .article-content .code-block {
            background: #F8FAFC;
            border-radius: 8px;
            padding: 16px 20px;
            font-family: "SFMono-Regular", Consolas, monospace;
            font-size: 13px;
            line-height: 1.7;
            overflow-x: auto;
            border: 1px solid var(--color-border);
            margin: 24px 0;
            color: #334155;
        }
        .article-content .note-box {
            background: #FFFBEB;
            border: 1px solid #FDE68A;
            border-radius: 8px;
            padding: 14px 20px;
            margin: 24px 0;
            font-size: 14px;
            color: #78350F;
            line-height: 1.7;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-content th {
            background: var(--color-primary-50);
            font-weight: 600;
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            text-align: left;
        }
        .article-content td {
            padding: 10px 14px;
            border: 1px solid var(--color-border);
        }
        .article-content hr {
            border: none;
            height: 1px;
            background: var(--color-border);
            margin: 32px 0;
        }

        .article-notfound {
            text-align: center;
            padding: 80px 24px;
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
        }
        .article-notfound .icon-circle {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--color-primary-50);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 30px;
            color: var(--color-primary);
        }
        .article-notfound h2 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .article-notfound p {
            color: var(--color-text-secondary);
            margin-bottom: 24px;
        }

        .article-back {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
        }
        .article-back a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-primary);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: gap 0.2s;
        }
        .article-back a:hover {
            gap: 12px;
            color: var(--color-primary-dark);
        }

        /* ===== Related posts ===== */
        .related-section {
            background: var(--color-bg);
            padding: 20px 0 60px;
        }
        .related-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 16px;
        }
        @media (min-width: 768px) {
            .related-container {
                padding: 0 24px;
            }
        }
        @media (min-width: 1024px) {
            .related-container {
                padding: 0 32px;
            }
        }
        .related-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .related-header h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-text);
        }
        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        @media (min-width: 768px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .related-card {
            background: var(--color-card);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            text-decoration: none;
            color: inherit;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .related-card-img {
            width: 100%;
            height: 168px;
            object-fit: cover;
            display: block;
        }
        .related-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }
        .related-card-badge {
            display: inline-block;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            width: fit-content;
        }
        .related-card-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-text);
            transition: color 0.2s;
        }
        .related-card:hover .related-card-title {
            color: var(--color-primary);
        }
        .related-card-desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .related-card-link {
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 500;
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* ===== CTA section ===== */
        .article-cta {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
            padding: 48px 0;
        }
        .article-cta-inner {
            max-width: 720px;
            margin: 0 auto;
            padding: 0 16px;
            text-align: center;
        }
        .article-cta h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .article-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
            margin-bottom: 28px;
        }
        .article-cta .btn-primary {
            font-size: 16px;
            padding: 14px 32px;
            border-radius: 12px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0B3B3A;
            padding: 56px 0 0;
            color: rgba(255, 255, 255, 0.75);
        }
        .site-footer .container-custom {
            padding-bottom: 0;
        }
        .footer-heading {
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .footer-link {
            display: block;
            color: rgba(204, 251, 241, 0.7);
            font-size: 14px;
            text-decoration: none;
            padding: 5px 0;
            transition: color 0.2s;
        }
        .footer-link:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 40px;
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            text-align: center;
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 64px;
            }
            .article-main {
                padding-top: 108px;
                padding-bottom: 60px;
            }
            .article-header h1 {
                font-size: 26px;
            }
            .article-content {
                font-size: 15px;
            }
            .article-content h2 {
                font-size: 21px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .related-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 23px;
            }
            .article-meta {
                gap: 8px 14px;
                font-size: 12px;
            }
            .breadcrumb {
                font-size: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0F766E;
            --color-primary-dark: #0B4F4A;
            --color-primary-light: #CCFBF1;
            --color-primary-50: #F0FDFA;
            --color-accent: #F59E0B;
            --color-accent-dark: #D97706;
            --color-text: #1F2937;
            --color-text-secondary: #6B7280;
            --color-border: #E5E7EB;
            --color-bg: #F9FAFB;
            --color-card: #FFFFFF;
            --color-footer-bg: #0B3B3A;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 1px 2px rgb(15 118 110 / 0.04), 0 8px 24px rgb(15 118 110 / 0.08);
            --shadow-hover: 0 4px 8px rgb(15 118 110 / 0.06), 0 16px 32px rgb(15 118 110 / 0.10);
            --transition: 300ms ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container-custom { padding: 0 32px; }
        }

        @media (min-width: 1024px) {
            .container-custom { padding: 0 40px; }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: 72px;
            background: #ffffff;
            border-bottom: 1px solid #f0f0f0;
            box-shadow: 0 1px 2px rgb(0 0 0 / 0.04);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            transition: opacity var(--transition);
        }

        .nav-logo:hover {
            opacity: 0.85;
        }

        .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 2px 6px rgb(15 118 110 / 0.3);
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }

        .desktop-nav .nav-link {
            display: inline-block;
            position: relative;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 8px 2px;
            transition: color var(--transition);
        }

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

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

        .desktop-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 3px;
            border-radius: 999px;
            background: var(--color-primary);
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: #047857;
            background: #ECFDF5;
            border-radius: 999px;
            padding: 4px 14px;
            font-weight: 500;
        }

        .status-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #10B981;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { box-shadow: 0 0 0 0 rgb(16 185 129 / 0.5); }
            50% { box-shadow: 0 0 0 4px rgb(16 185 129 / 0); }
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-accent);
            color: #ffffff !important;
            font-weight: 600;
            font-size: 15px;
            border-radius: 10px;
            padding: 12px 28px;
            text-decoration: none;
            transition: all var(--transition);
            box-shadow: 0 1px 3px rgb(245 158 11 / 0.3), 0 4px 12px rgb(245 158 11 / 0.15);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--color-accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgb(245 158 11 / 0.3), 0 8px 20px rgb(245 158 11 / 0.15);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.25), 0 1px 3px rgb(245 158 11 / 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--color-primary) !important;
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--color-primary);
            border-radius: 10px;
            padding: 12px 28px;
            text-decoration: none;
            transition: all var(--transition);
            cursor: pointer;
        }

        .btn-outline:hover {
            background: rgba(15, 118, 110, 0.08);
            transform: translateY(-1px);
        }

        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.2);
        }

        .mobile-toggle {
            transition: background-color var(--transition);
        }

        .mobile-toggle:hover {
            background-color: #F3F4F6 !important;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 12px 32px rgb(0 0 0 / 0.08);
            z-index: 49;
            padding: 12px 20px 20px;
        }

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

        .mobile-menu a {
            display: block;
            padding: 14px 4px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            border-bottom: 1px solid #f5f5f5;
            transition: color var(--transition);
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu a:hover {
            color: var(--color-primary);
        }

        .mobile-menu a.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ===== 分类页 Hero ===== */
        .cat-hero {
            background: linear-gradient(135deg, #F0FDFA 0%, #FFFFFF 55%, #ECFDF5 100%);
            position: relative;
            padding: 72px 0 80px;
            overflow: hidden;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.05);
            pointer-events: none;
        }

        .cat-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(204, 251, 241, 0.6);
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            padding: 6px 16px;
            box-shadow: 0 1px 2px rgb(15 118 110 / 0.06);
        }

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

        .hero-title {
            font-size: 42px;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--color-text);
            margin: 20px 0 16px;
        }

        .hero-title span {
            color: var(--color-primary);
        }

        .hero-subtitle {
            font-size: 17px;
            color: var(--color-text-secondary);
            margin-bottom: 28px;
            max-width: 480px;
            line-height: 1.7;
        }

        @media (min-width: 768px) {
            .hero-title { font-size: 48px; }
        }

        .hero-image-wrap {
            position: relative;
            z-index: 1;
        }

        .hero-image-wrap img {
            border-radius: 20px;
            box-shadow: var(--shadow-hover);
            border: 4px solid rgba(255, 255, 255, 0.9);
        }

        .hero-image-wrap::before {
            content: '';
            position: absolute;
            top: -16px;
            right: -16px;
            width: 120px;
            height: 120px;
            border-radius: 24px;
            background: rgba(245, 158, 11, 0.12);
            z-index: -1;
        }

        .hero-image-wrap::after {
            content: '';
            position: absolute;
            bottom: -14px;
            left: -14px;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: rgba(15, 118, 110, 0.08);
            z-index: -1;
        }

        /* ===== 通用板块 ===== */
        .section-block {
            padding: 64px 0;
        }

        .section-block-alt {
            background: var(--color-primary-50);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(204, 251, 241, 0.5);
            border-radius: 999px;
            padding: 5px 14px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-text);
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin-bottom: 40px;
        }

        @media (min-width: 768px) {
            .section-title { font-size: 32px; }
        }

        /* ===== 卡片 ===== */
        .custom-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 28px;
            transition: all var(--transition);
            border: 1px solid rgba(229, 231, 235, 0.5);
        }

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

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--color-primary-50);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            border: 1px solid rgba(15, 118, 110, 0.08);
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

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

        /* ===== 标记 / 徽章 ===== */
        .tag-pill {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-light);
            border-radius: 999px;
            padding: 4px 12px;
        }

        .check-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text);
            padding: 6px 0;
        }

        .check-item i {
            color: var(--color-primary);
            margin-top: 3px;
            font-size: 14px;
        }

        /* ===== 统计数字 ===== */
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }

        .stat-number span {
            color: var(--color-accent);
            font-size: 24px;
            font-weight: 600;
        }

        @media (min-width: 768px) {
            .stat-number { font-size: 40px; }
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 0;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition), border-color var(--transition);
        }

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

        .faq-item-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            background: transparent;
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            transition: color var(--transition);
        }

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

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-primary-50);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 14px;
            transition: all var(--transition);
        }

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

        .faq-item-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 350ms ease;
        }

        .faq-item-body-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            border-top: 1px solid #f3f4f6;
            padding-top: 14px;
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            background: var(--color-footer-bg);
            position: relative;
            overflow: hidden;
            padding: 72px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(204, 251, 241, 0.06);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: 10%;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.05);
        }

        .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-desc {
            font-size: 15px;
            color: rgba(204, 251, 241, 0.8);
            max-width: 560px;
        }

        @media (min-width: 768px) {
            .cta-title { font-size: 34px; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #072B2A;
            padding: 64px 0 0;
            position: relative;
        }

        .footer-heading {
            font-size: 14px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-link {
            display: block;
            font-size: 14px;
            color: rgba(204, 251, 241, 0.65);
            text-decoration: none;
            padding: 4px 0;
            transition: all var(--transition);
        }

        .footer-link:hover {
            color: #ffffff;
            padding-left: 3px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 48px;
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== 时间线步骤 ===== */
        .process-step {
            position: relative;
            padding-left: 72px;
            padding-bottom: 40px;
        }

        .process-step:last-child {
            padding-bottom: 0;
        }

        .process-step::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 44px;
            bottom: -4px;
            width: 2px;
            background: rgba(15, 118, 110, 0.15);
        }

        .process-step:last-child::before {
            display: none;
        }

        .step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 8px rgb(15 118 110 / 0.3);
            z-index: 1;
        }

        .process-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: all var(--transition);
            border: 1px solid rgba(229, 231, 235, 0.4);
        }

        .process-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .process-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

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

        /* ===== 响应式补充 ===== */
        @media (max-width: 640px) {
            .section-block { padding: 48px 0; }
            .hero-title { font-size: 32px; }
            .cta-title { font-size: 24px; }
            .stat-number { font-size: 30px; }
            .custom-card { padding: 22px; }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0F766E;
            --color-primary-dark: #0B4F4A;
            --color-primary-light: #CCFBF1;
            --color-primary-lighter: #F0FDFA;
            --color-accent: #F59E0B;
            --color-accent-dark: #D97706;
            --color-text: #1F2937;
            --color-text-muted: #6B7280;
            --color-border: #E5E7EB;
            --color-bg: #F9FAFB;
            --color-card: #FFFFFF;
            --color-footer: #0B3B3A;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 1px 2px rgb(15 118 110 / 0.04), 0 8px 24px rgb(15 118 110 / 0.08);
            --shadow-card-hover: 0 4px 8px rgb(15 118 110 / 0.06), 0 16px 32px rgb(15 118 110 / 0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
        }

        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            height: 72px;
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 2px rgb(15 118 110 / 0.04);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .nav-logo-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary);
            border-radius: 10px;
            box-shadow: 0 4px 10px rgb(15 118 110 / 0.25);
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .desktop-nav .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 8px 4px;
            transition: color 0.25s;
        }

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

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

        .desktop-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: -4px;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 999px;
            background: var(--color-primary);
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary-lighter);
            color: var(--color-primary);
            border: 1px solid var(--color-primary-light);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
        }

        .status-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22C55E;
            box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--color-accent);
            color: #ffffff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: 10px;
            border: none;
            transition: all 0.3s ease;
            box-shadow: 0 2px 6px rgb(245 158 11 / 0.25);
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgb(245 158 11 / 0.35);
        }

        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.25), 0 2px 6px rgb(245 158 11 / 0.25);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: 10px;
            background: transparent;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-outline:hover {
            background: rgba(15, 118, 110, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.2);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 2px solid rgba(255, 255, 255, 0.8);
            color: #ffffff;
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        /* ===== Tags & Badges ===== */
        .badge,
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-lighter);
            border: 1px solid var(--color-primary-light);
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        /* ===== Cards ===== */
        .card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid #F1F5F9;
            transition: all 0.3s ease;
        }

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

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary-lighter);
            color: var(--color-primary);
            font-size: 20px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }

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

        .breadcrumb span {
            color: var(--color-primary);
        }

        .breadcrumb i {
            font-size: 11px;
            opacity: 0.5;
        }

        /* ===== Steps ===== */
        .step-card {
            position: relative;
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid #F1F5F9;
            transition: all 0.3s ease;
        }

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

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--color-primary);
            color: #ffffff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgb(15 118 110 / 0.25);
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            border: 1px solid #F1F5F9;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }

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

        .faq-button {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            gap: 12px;
            transition: color 0.2s;
            cursor: pointer;
        }

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

        .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary-lighter);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: background 0.3s ease;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-answer p {
            padding: 0 24px 24px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-text-muted);
        }

        .faq-item.active .faq-icon {
            background: var(--color-primary);
            color: #ffffff;
        }

        /* ===== CTA banner ===== */
        .cta-banner {
            background: var(--color-footer);
            border-radius: 24px;
            overflow: hidden;
            position: relative;
            color: #ffffff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-footer);
            color: #9BB8B6;
            padding: 64px 0 0;
            margin-top: 0;
        }

        .footer-heading {
            color: #ffffff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-link {
            display: block;
            color: #B9CFCD;
            font-size: 14px;
            padding: 6px 0;
            transition: color 0.2s;
        }

        .footer-link:hover {
            color: #ffffff;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 48px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            flex-wrap: wrap;
            gap: 8px;
        }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #ffffff;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 12px 24px rgb(15 118 110 / 0.06);
            padding: 16px 24px;
            z-index: 40;
        }

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

        .mobile-menu-link {
            display: block;
            padding: 12px 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid #F1F5F9;
            transition: color 0.2s;
        }

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

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

        .mobile-menu .btn-primary {
            margin-top: 16px;
            width: 100%;
        }

        @media (max-width: 767px) {
            .container-custom {
                padding: 0 20px;
            }

            .category-hero h1 {
                font-size: 30px;
            }

            .cta-banner {
                padding: 40px 20px !important;
            }

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

        @media (max-width: 639px) {
            .step-card {
                padding: 20px;
            }

            .card {
                padding: 20px;
            }

            .faq-button {
                padding: 16px 16px;
                font-size: 15px;
            }

            .faq-answer p {
                padding: 0 16px 16px;
            }
        }