/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1e6b5e;
            --primary-dark: #144d43;
            --primary-light: #4e8f85;
            --accent: #c8a86e;
            --accent-light: #f0e6d2;
            --bg: #f7f5f0;
            --bg-alt: #f0ece4;
            --card-bg: #ffffff;
            --text: #2b2b2b;
            --text-muted: #6c757d;
            --border: #e8e2d8;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(0, 0, 0, .06);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, .10);
            --transition: all .3s ease;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1280px;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: #ffffff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(0, 0, 0, .04);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .navbar {
            padding: 12px 0;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin-right: 32px;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 4px 12px rgba(30, 107, 94, .25);
        }
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo-text .main {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: .5px;
        }
        .logo-text .sub {
            font-size: 12px;
            color: var(--primary);
            font-weight: 500;
            letter-spacing: .2px;
        }
        .navbar-nav {
            gap: 4px;
        }
        .navbar .nav-link {
            padding: 8px 18px;
            font-weight: 500;
            color: var(--text);
            border-radius: 8px;
            transition: var(--transition);
        }
        .navbar .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 107, 94, .07);
        }
        .navbar .nav-link.active {
            color: var(--primary);
            background: rgba(30, 107, 94, .12);
            font-weight: 600;
        }
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 4px 4px 4px 16px;
            margin-right: 16px;
            width: 240px;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 107, 94, .12);
        }
        .nav-search i {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
        }
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            width: 100%;
            font-size: 14px;
            color: var(--text);
        }
        .nav-search .btn-search {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-search .btn-search:hover {
            background: var(--primary-dark);
        }
        .btn-nav-cta {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 8px 22px;
            font-weight: 500;
            font-size: 14px;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 12px rgba(30, 107, 94, .2);
        }
        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(30, 107, 94, .28);
        }
        .navbar-toggler {
            border: none;
            font-size: 24px;
            color: var(--text);
            padding: 4px 12px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        @media (max-width: 991px) {
            .navbar-brand {
                margin-right: 8px;
            }
            .nav-search {
                width: 100%;
                margin: 10px 0;
                order: 3;
            }
            .navbar-collapse {
                padding-top: 12px;
            }
            .navbar-nav {
                gap: 0;
                margin-bottom: 8px;
            }
            .btn-nav-cta {
                margin-left: 0;
                margin-bottom: 10px;
                display: inline-block;
                text-align: center;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, rgba(20, 77, 67, .92), rgba(30, 107, 94, .78)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            right: -120px;
            top: -120px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(200, 168, 110, .25), transparent 70%);
            border-radius: 50%;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .14);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: 50px;
            padding: 6px 18px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
            letter-spacing: .5px;
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: .5px;
        }
        .hero .lead-text {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .9);
            max-width: 580px;
            margin-bottom: 32px;
            font-weight: 400;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 40px;
        }
        .btn-hero-primary {
            background: var(--accent);
            color: #1e1e1e;
            border: none;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(200, 168, 110, .35);
        }
        .btn-hero-primary:hover {
            background: #d9bc83;
            color: #1e1e1e;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 168, 110, .4);
        }
        .btn-hero-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, .7);
            padding: 10px 30px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 15px;
            transition: var(--transition);
        }
        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border-color: #fff;
        }
        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            max-width: 520px;
        }
        .hero-metric {
            background: rgba(255, 255, 255, .1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, .15);
            border-radius: 14px;
            padding: 18px 20px;
            text-align: center;
        }
        .hero-metric .num {
            font-size: 28px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .hero-metric .label {
            font-size: 13px;
            color: rgba(255, 255, 255, .85);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero {
                padding: 60px 0 50px;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero .lead-text {
                font-size: 15px;
            }
            .hero-metrics {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .hero-metric .num {
                font-size: 22px;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }
        .section.bg-light {
            background: var(--bg-alt);
        }
        .section-head {
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(30, 107, 94, .08);
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 14px;
            letter-spacing: .5px;
        }
        .section-head .desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 560px;
            line-height: 1.75;
        }
        .section-head.center {
            text-align: center;
        }
        .section-head.center .desc {
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
        }

        /* ===== Feature Cards ===== */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(30, 107, 94, .2);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 20px;
            box-shadow: 0 6px 18px rgba(30, 107, 94, .2);
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== Service Cards ===== */
        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .service-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .service-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .service-card:hover .card-img img {
            transform: scale(1.05);
        }
        .service-card .card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, .35), transparent 60%);
        }
        .service-card .badge-tag {
            position: absolute;
            left: 14px;
            bottom: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            color: var(--primary-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
        }
        .service-card .card-body {
            padding: 22px 20px 24px;
        }
        .service-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .service-card .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .service-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .service-card .card-meta .price {
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
        }

        /* ===== Scene Demo ===== */
        .scene-section {
            position: relative;
            background: var(--bg-alt);
        }
        .scene-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            height: 100%;
            min-height: 360px;
        }
        .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .scene-content {
            padding: 20px 0;
        }
        .scene-content h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 18px;
            line-height: 1.4;
        }
        .scene-content .lead {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .scene-list {
            list-style: none;
            padding: 0;
            margin: 0 0 28px;
        }
        .scene-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 14px;
            color: var(--text);
            border-bottom: 1px dashed var(--border);
        }
        .scene-list li:last-child {
            border-bottom: none;
        }
        .scene-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 16px;
        }
        .btn-scene {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-scene:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(30, 107, 94, .25);
        }
        @media (max-width: 768px) {
            .scene-img {
                min-height: 240px;
                margin-bottom: 24px;
            }
        }

        /* ===== Testimonials ===== */
        .testimonial-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            height: 100%;
            transition: var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow);
            border-color: rgba(30, 107, 94, .2);
        }
        .testimonial-card .stars {
            color: var(--accent);
            font-size: 14px;
            margin-bottom: 14px;
        }
        .testimonial-card .quote {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text);
            margin-bottom: 20px;
            min-height: 76px;
        }
        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .testimonial-card .author .avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 600;
            font-size: 16px;
        }
        .testimonial-card .author .name {
            font-weight: 600;
            font-size: 14px;
        }
        .testimonial-card .author .tag {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ===== Topics / News ===== */
        .topics-wrap {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            height: 100%;
        }
        .topics-wrap h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--bg-alt);
        }
        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .topic-tag {
            display: inline-block;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 13px;
            color: var(--text);
            transition: var(--transition);
            cursor: pointer;
        }
        .topic-tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(30, 107, 94, .2);
        }
        .topic-tag i {
            margin-right: 4px;
            font-size: 12px;
        }
        .news-list {
            text-align: left;
        }
        .news-item {
            display: flex;
            align-items: baseline;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px dashed var(--border);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item .news-date {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .news-item a {
            font-size: 14px;
            color: var(--text);
            line-height: 1.5;
        }
        .news-item a:hover {
            color: var(--primary);
        }
        .news-side-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
        }
        .news-side-item .side-icon {
            width: 36px;
            height: 36px;
            background: rgba(30, 107, 94, .1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
        }
        .news-side-item .side-text {
            font-size: 13px;
            line-height: 1.45;
            color: var(--text);
        }
        .news-side-item .side-text a {
            font-weight: 500;
        }

        /* ===== Form Section ===== */
        .form-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary)), url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            background-blend-mode: overlay;
            color: #fff;
            padding: 80px 0;
        }
        .form-section .section-tag {
            background: rgba(255, 255, 255, .15);
            color: #fff;
        }
        .form-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 800;
        }
        .form-section .desc {
            color: rgba(255, 255, 255, .85);
            font-size: 15px;
            max-width: 460px;
        }
        .form-card {
            background: #fff;
            border-radius: 20px;
            padding: 36px;
            box-shadow: var(--shadow-lg);
        }
        .form-card .form-label {
            font-weight: 600;
            font-size: 14px;
            color: var(--text);
            margin-bottom: 6px;
        }
        .form-card .form-control,
        .form-card .form-select {
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 12px 14px;
            font-size: 14px;
            transition: var(--transition);
            background: var(--bg);
        }
        .form-card .form-control:focus,
        .form-card .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 107, 94, .12);
            background: #fff;
        }
        .form-card .btn-submit {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 12px 36px;
            font-weight: 600;
            width: 100%;
            transition: var(--transition);
        }
        .form-card .btn-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 107, 94, .3);
        }
        @media (max-width: 768px) {
            .form-section {
                padding: 50px 0;
            }
            .form-card {
                padding: 24px;
            }
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(30, 107, 94, .25);
            box-shadow: var(--shadow);
        }
        .faq-item .faq-header {
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: var(--card-bg);
        }
        .faq-item .faq-header i {
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item.active .faq-header i {
            transform: rotate(180deg);
        }
        .faq-item .faq-body {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: var(--accent-light);
            border: 1px solid rgba(200, 168, 110, .3);
            border-radius: 20px;
            padding: 40px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-banner h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .cta-banner p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 0;
        }
        .btn-cta-gold {
            background: var(--accent);
            color: #1e1e1e;
            border: none;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 16px rgba(200, 168, 110, .3);
        }
        .btn-cta-gold:hover {
            background: #d9bc83;
            color: #1e1e1e;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #22303c;
            color: rgba(255, 255, 255, .75);
            padding: 60px 0 0;
        }
        .site-footer .footer-about {
            padding-right: 40px;
        }
        .site-footer .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-footer .footer-brand i {
            color: var(--accent);
        }
        .site-footer .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 1px;
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-links li {
            margin-bottom: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, .7);
            font-size: 14px;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-contact li {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
            font-size: 14px;
        }
        .site-footer .footer-contact i {
            color: var(--accent);
            width: 20px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .5);
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary);
        }

        /* ===== Focus Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid rgba(30, 107, 94, .35);
            outline-offset: 2px;
        }

/* roulang page: category2 */
:root {
            --primary: #3E5C4A;
            --primary-dark: #2C4537;
            --primary-light: #5A7C68;
            --accent: #C4956A;
            --accent-dark: #A8794F;
            --accent-light: #F4EBDD;
            --bg-body: #FAF8F4;
            --bg-alt: #F1EDE6;
            --bg-white: #FFFFFF;
            --bg-dark: #2B3A31;
            --text-primary: #2B2B2B;
            --text-muted: #6B6B6B;
            --text-light: #9A9A9A;
            --border-light: #E8E1D8;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 6px 28px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.10);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--accent);
            text-decoration: none;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
        }

        /* ========== Header / Nav ========== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 1050;
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }

        .navbar-brand .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .navbar-brand .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text .main {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 1px;
        }

        .logo-text .sub {
            font-size: 11px;
            color: var(--accent);
            letter-spacing: 2px;
            font-weight: 500;
        }

        .navbar-nav {
            gap: 4px;
            margin-left: 20px;
        }

        .navbar-nav .nav-link {
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 8px;
            transition: var(--transition);
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link:focus {
            color: var(--primary);
            background: rgba(62, 92, 74, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background: rgba(62, 92, 74, 0.10);
            font-weight: 600;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-light);
            border-radius: 30px;
            padding: 4px 6px 4px 14px;
            margin-right: 12px;
            min-width: 220px;
            transition: var(--transition);
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(62, 92, 74, 0.10);
        }

        .nav-search i {
            color: var(--text-light);
            font-size: 13px;
            margin-right: 8px;
        }

        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            flex: 1;
            color: var(--text-primary);
        }

        .nav-search input::placeholder {
            color: var(--text-light);
        }

        .nav-search .btn-search {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 20px;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 500;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-search .btn-search:hover {
            background: var(--primary-dark);
        }

        .btn-nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            border-radius: 30px;
            padding: 9px 20px;
            font-size: 13px;
            font-weight: 600;
            border: none;
            box-shadow: 0 4px 14px rgba(196, 149, 106, 0.3);
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(196, 149, 106, 0.4);
            color: #fff;
        }

        .navbar-toggler {
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            padding: 4px 8px;
        }

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

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            padding: 70px 0 80px;
            background: linear-gradient(120deg, rgba(44, 69, 55, 0.92), rgba(62, 92, 74, 0.78)), url('/assets/images/backpic/back-2.jpg') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 30%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(196, 149, 106, 0.12);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            color: #e8c9a0;
        }

        .hero-section h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .hero-section h1 span {
            color: #e8c9a0;
        }

        .hero-section p.lead-text {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 480px;
            margin-bottom: 28px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }

        .hero-btns .btn-demo {
            background: #fff;
            color: var(--primary);
            border: none;
            border-radius: 30px;
            padding: 12px 24px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        }

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

        .hero-btns .btn-join {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            border: none;
            border-radius: 30px;
            padding: 12px 26px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 18px rgba(196, 149, 106, 0.35);
        }

        .hero-btns .btn-join:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(196, 149, 106, 0.45);
            color: #fff;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }

        .hero-meta i {
            margin-right: 5px;
            color: #e8c9a0;
        }

        /* 主推卡 */
        .hero-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            max-width: 400px;
            margin-left: auto;
            transition: var(--transition);
            border: none;
        }

        .hero-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.15);
        }

        .hero-card .card-img-wrap {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

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

        .hero-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .hero-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 20px;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        }

        .hero-card .card-rating {
            position: absolute;
            bottom: 10px;
            right: 14px;
            background: rgba(0, 0, 0, 0.65);
            color: #ffd16a;
            font-size: 13px;
            padding: 4px 12px;
            border-radius: 20px;
            backdrop-filter: blur(4px);
        }

        .hero-card .card-body {
            padding: 20px;
        }

        .hero-card .card-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .hero-card .card-body .card-sub {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .hero-card .card-specs {
            display: flex;
            gap: 14px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 14px;
        }

        .hero-card .card-specs i {
            color: var(--primary);
            margin-right: 3px;
        }

        .hero-card .card-price {
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-dark);
            margin-bottom: 14px;
        }

        .hero-card .card-price small {
            font-size: 12px;
            color: var(--text-light);
            font-weight: 400;
        }

        .hero-card .card-btn {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            width: 100%;
            transition: var(--transition);
        }

        .hero-card .card-btn:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        /* ========== 指标看板 ========== */
        .stats-section {
            padding: 60px 0;
            background: #fff;
            border-bottom: 1px solid var(--border-light);
        }

        .stats-section .section-head {
            text-align: center;
            margin-bottom: 40px;
        }

        .stats-section .section-head .section-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .stats-section .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .stats-section .section-head p {
            color: var(--text-muted);
            font-size: 14px;
            max-width: 560px;
            margin: 8px auto 0;
        }

        .stat-card {
            background: var(--bg-body);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .stat-card .stat-icon {
            width: 48px;
            height: 48px;
            background: rgba(62, 92, 74, 0.1);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 12px;
        }

        .stat-card .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .stat-card .stat-num span {
            font-size: 20px;
            font-weight: 600;
            color: var(--accent);
        }

        .stat-card .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ========== 服务矩阵 ========== */
        .services-section {
            padding: 70px 0;
            background: var(--bg-body);
        }

        .services-section .section-head {
            text-align: center;
            margin-bottom: 44px;
        }

        .services-section .section-head .section-tag {
            display: inline-block;
            background: rgba(62, 92, 74, 0.12);
            color: var(--primary);
            font-size: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .services-section .section-head h2 {
            font-size: 28px;
            font-weight: 700;
        }

        .services-section .section-head p {
            color: var(--text-muted);
            font-size: 14px;
            max-width: 600px;
            margin: 8px auto 0;
        }

        .service-card {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 0;
            background: linear-gradient(180deg, var(--accent), var(--primary));
            transition: var(--transition);
        }

        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(62, 92, 74, 0.25);
        }

        .service-card:hover::before {
            height: 100%;
        }

        .service-card .service-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(62, 92, 74, 0.1), rgba(196, 149, 106, 0.1));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 18px;
            transition: var(--transition);
        }

        .service-card:hover .service-icon {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
        }

        .service-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .service-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== 结果对比 ========== */
        .compare-section {
            padding: 70px 0;
            background: var(--bg-dark);
            color: #fff;
            background-image: linear-gradient(rgba(43, 58, 49, 0.92), rgba(43, 58, 49, 0.92)), url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
        }

        .compare-section .section-head {
            text-align: center;
            margin-bottom: 44px;
        }

        .compare-section .section-head .section-tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            color: #e8c9a0;
            font-size: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .compare-section .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
        }

        .compare-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .compare-wrap {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 30px;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            color: #fff;
        }

        .compare-table th,
        .compare-table td {
            padding: 14px 16px;
            font-size: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.10);
            text-align: center;
        }

        .compare-table thead th {
            padding: 16px;
            font-weight: 700;
            background: rgba(255, 255, 255, 0.08);
            border-bottom: 2px solid rgba(255, 255, 255, 0.15);
        }

        .compare-table thead th:first-child {
            text-align: left;
            border-radius: 10px 0 0 0;
        }

        .compare-table thead th:last-child {
            border-radius: 0 10px 0 0;
        }

        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.85);
        }

        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }

        .compare-table .fa-check-circle {
            color: #7ecb8d;
        }

        .compare-table .fa-times-circle {
            color: rgba(255, 255, 255, 0.3);
        }

        .compare-tag-our {
            background: var(--accent);
            color: #fff;
            font-size: 11px;
            padding: 2px 10px;
            border-radius: 20px;
            font-weight: 600;
            margin-left: 4px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 70px 0;
            background: #fff;
        }

        .faq-section .section-head {
            text-align: center;
            margin-bottom: 44px;
        }

        .faq-section .section-head .section-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            font-size: 12px;
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .faq-section .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .faq-section .section-head p {
            color: var(--text-muted);
            font-size: 14px;
            max-width: 560px;
            margin: 8px auto 0;
        }

        .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            background: var(--bg-body);
            transition: var(--transition);
        }

        .accordion-item:last-child {
            margin-bottom: 0;
        }

        .accordion-item .accordion-button {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            background: #fff;
            padding: 18px 22px;
            box-shadow: none;
            border-radius: var(--radius-md);
        }

        .accordion-item .accordion-button:not(.collapsed) {
            background: rgba(62, 92, 74, 0.06);
            color: var(--primary);
        }

        .accordion-item .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(62, 92, 74, 0.12);
        }

        .accordion-item .accordion-body {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            padding: 8px 22px 20px;
        }

        /* ========== CTA / 转化表单 ========== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--accent-light), #f9f4ec);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(196, 149, 106, 0.12);
        }

        .cta-section .cta-content {
            text-align: center;
            margin-bottom: 40px;
        }

        .cta-section .cta-content h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .cta-section .cta-content p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 540px;
            margin: 0 auto;
        }

        .form-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 36px;
            max-width: 620px;
            margin: 0 auto;
            border: 1px solid rgba(196, 149, 106, 0.15);
        }

        .form-card .form-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .form-card .form-control,
        .form-card .form-select {
            border: 1px solid var(--border-light);
            border-radius: 10px;
            padding: 10px 14px;
            font-size: 14px;
            background: var(--bg-body);
            transition: var(--transition);
        }

        .form-card .form-control:focus,
        .form-card .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(62, 92, 74, 0.10);
            background: #fff;
        }

        .form-card .form-control::placeholder {
            color: var(--text-light);
        }

        .form-card .form-text {
            font-size: 12px;
            color: var(--text-light);
        }

        .form-card .btn-submit {
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            border: none;
            border-radius: 12px;
            padding: 12px 24px;
            font-weight: 600;
            font-size: 15px;
            width: 100%;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(196, 149, 106, 0.3);
        }

        .form-card .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(196, 149, 106, 0.4);
            color: #fff;
        }

        .form-card .btn-submit:active {
            transform: translateY(0);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #25332C;
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
            font-size: 14px;
        }

        .site-footer h5 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .site-footer .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .site-footer .footer-brand i {
            color: var(--accent);
            font-size: 22px;
        }

        .site-footer .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }

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

        .site-footer .footer-contact li {
            font-size: 13px;
            margin-bottom: 8px;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer .footer-contact i {
            margin-right: 8px;
            color: var(--accent);
        }

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

        .site-footer .footer-links li {
            margin-bottom: 8px;
        }

        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            transition: var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            margin-top: 40px;
        }

        .site-footer .footer-bottom p {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            margin: 0;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .hero-section {
                padding: 50px 0 60px;
            }

            .hero-section h1 {
                font-size: 32px;
            }

            .hero-card {
                margin-left: 0;
                margin-top: 32px;
                max-width: 100%;
            }

            .nav-search {
                min-width: 160px;
            }
        }

        @media (max-width: 768px) {
            .navbar-nav {
                margin-left: 0;
                margin-top: 14px;
                gap: 2px;
            }

            .navbar-nav .nav-link {
                padding: 8px 12px;
            }

            .nav-search {
                width: 100%;
                margin: 10px 0;
            }

            .btn-nav-cta {
                width: 100%;
                text-align: center;
                margin-top: 8px;
            }

            .hero-section {
                text-align: center;
                padding: 44px 0 50px;
            }

            .hero-section .lead-text {
                margin-left: auto;
                margin-right: auto;
            }

            .hero-meta {
                justify-content: center;
            }

            .stats-section .stat-card {
                margin-bottom: 16px;
            }

            .services-section .service-card {
                margin-bottom: 16px;
            }

            .compare-wrap {
                padding: 16px;
                overflow-x: auto;
            }

            .compare-table {
                min-width: 560px;
            }

            .compare-table th,
            .compare-table td {
                padding: 12px;
                font-size: 13px;
            }

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

        @media (max-width: 520px) {
            .hero-section h1 {
                font-size: 26px;
            }

            .hero-section p.lead-text {
                font-size: 14px;
            }

            .hero-btns {
                flex-direction: column;
                align-items: center;
            }

            .hero-btns .btn-demo,
            .hero-btns .btn-join {
                width: 100%;
                text-align: center;
            }

            .hero-meta {
                flex-direction: column;
                gap: 8px;
                align-items: center;
            }

            .stats-section .stat-num {
                font-size: 24px;
            }

            .stats-section {
                padding: 40px 0;
            }

            .services-section,
            .compare-section,
            .faq-section {
                padding: 44px 0;
            }

            .cta-section {
                padding: 44px 0;
            }

            .cta-section .cta-content h2 {
                font-size: 24px;
            }

            .form-card {
                padding: 20px 16px;
            }

            .form-card .form-control,
            .form-card .form-select {
                font-size: 14px;
            }

            .site-footer {
                padding-top: 40px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a4331;
            --primary-dark: #102d21;
            --primary-light: #2b6b4f;
            --accent: #c8a56a;
            --accent-light: #e2c894;
            --bg: #f7f4ee;
            --surface: #ffffff;
            --text: #1e2b27;
            --text-muted: #6a7b75;
            --border: #e6e0d4;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(16,45,33,.06);
            --shadow-md: 0 8px 30px rgba(16,45,33,.09);
            --shadow-lg: 0 18px 50px rgba(16,45,33,.14);
            --transition: all .3s ease;
            --font-family: "PingFang SC","Microsoft YaHei","Hiragino Sans GB",Arial,sans-serif;
        }
        
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        
        body {
            margin: 0;
            color: var(--text);
            background: var(--bg);
            font-family: var(--font-family);
            line-height: 1.7;
            font-size: 16px;
        }
        
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        
        a:hover {
            color: var(--primary);
        }
        
        img {
            max-width: 100%;
        }
        
        .container {
            max-width: 1200px;
        }

        /* ===== Header ===== */
        .site-header {
            background: #fff;
            box-shadow: 0 2px 20px rgba(16,45,33,.08);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .site-header .navbar {
            padding: 14px 0;
        }
        
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin-right: 30px;
        }
        
        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }
        
        .logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        
        .logo-text .main {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }
        
        .logo-text .sub {
            font-size: 12px;
            color: var(--accent);
            font-weight: 600;
            letter-spacing: 2px;
        }
        
        .navbar-nav {
            gap: 4px;
        }
        
        .nav-item .nav-link {
            color: var(--text);
            font-weight: 500;
            font-size: 15px;
            padding: 8px 16px !important;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }
        
        .nav-item .nav-link:hover,
        .nav-item .nav-link.active {
            color: var(--primary);
            background: rgba(26,67,49,.06);
        }
        
        .nav-item .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }
        
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border-radius: 30px;
            padding: 4px 6px 4px 16px;
            border: 1px solid var(--border);
            margin-right: 14px;
            width: 220px;
            transition: var(--transition);
        }
        
        .nav-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(200,165,106,.18);
        }
        
        .nav-search i {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
        }
        
        .nav-search input {
            border: none;
            background: transparent;
            outline: none;
            flex: 1;
            font-size: 14px;
            color: var(--text);
        }
        
        .nav-search input::placeholder {
            color: #a0a9a5;
        }
        
        .nav-search .btn-search {
            background: var(--primary);
            border: none;
            color: #fff;
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 20px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
        }
        
        .nav-search .btn-search:hover {
            background: var(--primary-light);
        }
        
        .btn-nav-cta {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 9px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            white-space: nowrap;
        }
        
        .btn-nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(26,67,49,.25);
        }
        
        .navbar-toggler {
            border: none;
            color: var(--primary);
            font-size: 22px;
            padding: 4px 8px;
        }
        
        .navbar-toggler:focus {
            box-shadow: none;
        }
        
        /* ===== Hero ===== */
        .hero-video {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--primary-dark);
        }
        
        .hero-backdrop {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }
        
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(16,45,33,.88) 0%, rgba(16,45,33,.55) 60%, rgba(16,45,33,.75) 100%);
            z-index: 1;
        }
        
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            color: #fff;
            padding: 80px 0;
        }
        
        .hero-inner {
            max-width: 720px;
        }
        
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(200,165,106,.2);
            border: 1px solid rgba(200,165,106,.4);
            color: var(--accent-light);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }
        
        .hero-inner h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        
        .hero-inner h1 .highlight {
            color: var(--accent);
        }
        
        .hero-subtitle {
            font-size: 17px;
            color: rgba(255,255,255,.9);
            line-height: 1.8;
            margin-bottom: 30px;
            max-width: 600px;
        }
        
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            margin-bottom: 36px;
        }
        
        .btn-hero-primary {
            background: var(--accent);
            color: #fff;
            border: none;
            padding: 13px 30px;
            border-radius: 30px;
            font-size: 15px;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(200,165,106,.3);
        }
        
        .btn-hero-primary:hover {
            background: #b79556;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(200,165,106,.4);
        }
        
        .btn-play {
            background: rgba(255,255,255,.12);
            color: #fff;
            border: 2px solid rgba(255,255,255,.6);
            padding: 12px 26px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        
        .btn-play i {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: #fff;
            transition: var(--transition);
        }
        
        .btn-play:hover {
            background: rgba(255,255,255,.2);
            color: #fff;
            border-color: var(--accent);
        }
        
        .btn-play:hover i {
            background: var(--accent);
            transform: scale(1.1);
        }
        
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: rgba(255,255,255,.85);
        }
        
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        
        .hero-meta i {
            color: var(--accent);
        }
        
        /* ===== Metrics ===== */
        .metrics-section {
            padding: 70px 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        
        .metric-card {
            text-align: center;
            padding: 28px 16px;
            background: var(--bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
        }
        
        .metric-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: rgba(200,165,106,.5);
        }
        
        .metric-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
        }
        
        .metric-value {
            font-size: 30px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        
        .metric-value small {
            font-size: 16px;
            font-weight: 600;
        }
        
        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== Section Head ===== */
        .section-head {
            text-align: center;
            margin-bottom: 42px;
        }
        
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(26,67,49,.08);
            color: var(--primary);
            padding: 5px 16px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: .5px;
        }
        
        .section-head p {
            max-width: 640px;
            margin: 0 auto;
            color: var(--text-muted);
            font-size: 16px;
        }

        /* ===== Process / Service Matrix ===== */
        .process-section {
            padding: 80px 0;
            background: var(--bg);
        }
        
        .process-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 30px 24px;
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
            height: 100%;
            overflow: hidden;
        }
        
        .process-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--primary));
            opacity: 0;
            transition: var(--transition);
        }
        
        .process-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        
        .process-card:hover::before {
            opacity: 1;
        }
        
        .process-step {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 34px;
            font-weight: 800;
            color: rgba(26,67,49,.07);
            line-height: 1;
        }
        
        .process-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(26,67,49,.08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
            transition: var(--transition);
        }
        
        .process-card:hover .process-icon {
            background: var(--primary);
            color: #fff;
        }
        
        .process-card h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        
        .process-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.65;
        }
        
        .process-card .process-tag {
            display: inline-block;
            margin-top: 14px;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 20px;
            background: rgba(200,165,106,.15);
            color: #a5834b;
            font-weight: 600;
        }

        /* ===== Compare ===== */
        .compare-section {
            padding: 80px 0;
            background: var(--surface);
        }
        
        .compare-block {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        
        .compare-col {
            flex: 1;
            min-width: 260px;
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: var(--transition);
        }
        
        .compare-col:hover {
            transform: translateY(-4px);
        }
        
        .compare-bad {
            background: #faf6f4;
            border: 1px solid #f0e0da;
        }
        
        .compare-good {
            background: linear-gradient(145deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        
        .compare-col h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .compare-bad h4 {
            color: #a05c45;
        }
        
        .compare-good h4 {
            color: var(--accent-light);
        }
        
        .compare-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .compare-col ul li {
            padding: 8px 0;
            font-size: 14px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        
        .compare-bad ul li i {
            color: #c98368;
            margin-top: 4px;
        }
        
        .compare-good ul li i {
            color: var(--accent);
            margin-top: 4px;
        }
        
        .compare-good ul li {
            color: rgba(255,255,255,.95);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }
        
        .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        
        .accordion-item:hover {
            border-color: rgba(200,165,106,.5);
        }
        
        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 18px 22px;
            background: transparent;
        }
        
        .accordion-button:not(.collapsed) {
            background: rgba(26,67,49,.04);
            color: var(--primary);
            box-shadow: none;
        }
        
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent);
        }
        
        .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            color: var(--primary);
        }
        
        .accordion-button:not(.collapsed)::after {
            background-image: none;
            transform: rotate(180deg);
            color: var(--accent);
        }
        
        .accordion-body {
            padding: 8px 22px 20px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
        }

        /* ===== Form Section ===== */
        .form-section {
            padding: 80px 0;
            background: linear-gradient(145deg, var(--primary) 0%, var(--primary-dark) 100%);
            position: relative;
            overflow: hidden;
        }
        
        .form-section::before {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(200,165,106,.08);
            top: -120px;
            right: -120px;
        }
        
        .form-wrap {
            background: var(--surface);
            border-radius: 24px;
            padding: 48px;
            box-shadow: var(--shadow-lg);
            position: relative;
            z-index: 2;
        }
        
        .form-wrap h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
        }
        
        .form-wrap .form-intro {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 24px;
        }
        
        .form-benefits {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }
        
        .form-benefits li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .form-benefits li i {
            color: var(--primary);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(26,67,49,.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
        }
        
        .form-label {
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 6px;
            color: var(--text);
        }
        
        .form-control,
        .form-select {
            border: 1.5px solid var(--border);
            border-radius: 10px;
            padding: 11px 16px;
            font-size: 14px;
            background: #fff;
            transition: var(--transition);
        }
        
        .form-control:focus,
        .form-select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(200,165,106,.15);
        }
        
        textarea.form-control {
            min-height: 80px;
            resize: vertical;
        }
        
        .btn-submit {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 14px 30px;
            border-radius: 30px;
            font-weight: 700;
            font-size: 16px;
            transition: var(--transition);
            width: 100%;
        }
        
        .btn-submit:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(26,67,49,.3);
        }
        
        .form-note {
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
        }
        
        .submit-success {
            text-align: center;
            padding: 40px 20px;
        }
        
        .submit-success i {
            font-size: 52px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        
        .submit-success h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        
        .submit-success p {
            color: var(--text-muted);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #14241f;
            color: rgba(255,255,255,.8);
            padding: 60px 0 0;
        }
        
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        
        .footer-brand i {
            color: var(--accent);
            font-size: 22px;
        }
        
        .footer-desc {
            font-size: 14px;
            color: rgba(255,255,255,.65);
            line-height: 1.8;
            margin-bottom: 20px;
            max-width: 340px;
        }
        
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            padding: 4px 0;
            color: rgba(255,255,255,.7);
        }
        
        .footer-contact li i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }
        
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }
        
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .footer-links li {
            padding: 5px 0;
        }
        
        .footer-links a {
            font-size: 14px;
            color: rgba(255,255,255,.65);
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            margin-top: 40px;
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,.5);
        }

        /* ===== Video Modal ===== */
        .modal-content {
            border: none;
            border-radius: var(--radius);
            overflow: hidden;
        }
        
        .modal-header {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 16px 24px;
        }
        
        .modal-header .modal-title {
            font-size: 16px;
            font-weight: 700;
        }
        
        .modal-header .btn-close {
            filter: invert(1) grayscale(100%) brightness(200%);
        }
        
        .modal-body {
            padding: 0;
        }
        
        .video-placeholder {
            position: relative;
        }
        
        .video-placeholder img {
            width: 100%;
            display: block;
        }
        
        .video-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0,0,0,.75));
            color: #fff;
            padding: 40px 24px 20px;
            font-size: 14px;
        }
        
        .video-placeholder::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(16,45,33,.3);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .video-placeholder::after {
            content: '\f04b';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 34px;
            color: #fff;
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 76px;
            height: 76px;
            border-radius: 50%;
            background: rgba(200,165,106,.9);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 30px rgba(0,0,0,.35);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .navbar-nav {
                margin-top: 12px;
            }
            
            .nav-item .nav-link {
                padding: 10px 16px !important;
            }
            
            .nav-item .nav-link.active::after {
                bottom: auto;
                top: 8px;
                left: 0;
                right: auto;
                width: 3px;
                height: 20px;
                border-radius: 3px;
            }
            
            .nav-search {
                width: 100%;
                margin: 12px 0;
            }
            
            .btn-nav-cta {
                margin-top: 8px;
                text-align: center;
                width: 100%;
            }
            
            .hero-inner h1 {
                font-size: 32px;
            }
            
            .hero-video {
                min-height: 480px;
            }
            
            .form-wrap {
                padding: 32px 24px;
            }
        }
        
        @media (max-width: 767.98px) {
            .hero-inner h1 {
                font-size: 26px;
            }
            
            .hero-subtitle {
                font-size: 15px;
            }
            
            .hero-content {
                padding: 60px 0;
            }
            
            .section-head h2 {
                font-size: 24px;
            }
            
            .section-head {
                margin-bottom: 28px;
            }
            
            .process-section,
            .compare-section,
            .faq-section,
            .form-section {
                padding: 50px 0;
            }
            
            .metrics-section {
                padding: 40px 0;
            }
            
            .compare-block {
                flex-direction: column;
            }
            
            .compare-col {
                min-width: auto;
            }
            
            .footer-contact {
                margin-bottom: 24px;
            }
        }
        
        @media (max-width: 575.98px) {
            .logo-text .main {
                font-size: 16px;
            }
            
            .logo-text .sub {
                font-size: 10px;
            }
            
            .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            
            .metric-value {
                font-size: 24px;
            }
            
            .metric-card {
                padding: 20px 12px;
            }
            
            .hero-meta {
                gap: 12px;
                font-size: 13px;
            }
            
            .btn-hero-primary,
            .btn-play {
                width: 100%;
                justify-content: center;
            }
            
            .hero-actions {
                gap: 12px;
            }
        }