/* roulang page: index */
:root {
            --primary: #2D6DB5;
            --primary-dark: #245A9A;
            --primary-light: rgba(45, 109, 181, 0.08);
            --accent: #00A89E;
            --accent-light: rgba(0, 168, 158, 0.1);
            --bg: #F5F7FA;
            --card: #FFFFFF;
            --navy: #1B2A41;
            --text-title: #1B2A41;
            --text-body: #3E4F64;
            --text-weak: #6B7B90;
            --border: #E2E8F0;
            --radius: 12px;
            --radius-btn: 8px;
            --shadow: 0 4px 20px rgba(45, 109, 181, 0.08);
            --shadow-hover: 0 8px 30px rgba(45, 109, 181, 0.14);
            --space: 80px;
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--space) 0;
        }
        .section-head {
            position: relative;
            margin-bottom: 40px;
        }
        .section-head.center {
            text-align: center;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 32px;
            line-height: 1.3;
            color: var(--text-title);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .section-desc {
            color: var(--text-weak);
            max-width: 560px;
            font-size: 15px;
        }
        .section-more {
            position: absolute;
            right: 0;
            bottom: 8px;
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
        }
        .section-more:hover {
            color: var(--accent);
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: border-color .3s, box-shadow .3s;
        }
        .site-header.scrolled {
            border-color: var(--border);
            box-shadow: 0 2px 16px rgba(27, 42, 65, 0.06);
        }
        .header-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-title);
            white-space: nowrap;
        }
        .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(45, 109, 181, 0.25);
        }
        .nav-links {
            display: flex;
            gap: 30px;
            align-items: center;
        }
        .nav-links a {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
            letter-spacing: 0.5px;
            padding: 6px 0;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-badge {
            font-size: 12px;
            padding: 4px 12px;
            background: #FDE68A;
            color: #92400E;
            border-radius: 999px;
            font-weight: 500;
            white-space: nowrap;
        }
        .btn-nav {
            height: 36px;
            padding: 0 20px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: background .2s, transform .2s, box-shadow .2s;
        }
        .btn-nav:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(45, 109, 181, 0.25);
        }
        .btn-nav:focus-visible,
        .nav-links a:focus-visible,
        .logo:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }
        .burger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            background: var(--primary-light);
        }
        .burger span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform .25s ease;
        }

        /* ===== Hero ===== */
        .hero {
            margin-top: 72px;
            min-height: calc(80vh - 72px);
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            background: linear-gradient(105deg, rgba(27, 42, 65, 0.62) 10%, rgba(45, 109, 181, 0.30) 60%, rgba(0, 168, 158, 0.15) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
        }
        .hero-inner {
            display: flex;
            align-items: center;
            gap: 60px;
            width: 100%;
            padding-top: 72px;
            padding-bottom: 100px;
        }
        .hero-content {
            flex: 1;
            max-width: 480px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(6px);
            border-radius: 999px;
            color: #EAF2FA;
            letter-spacing: 1px;
        }
        .hero h1 {
            font-size: 40px;
            line-height: 1.28;
            color: #fff;
            font-weight: 700;
            margin: 22px 0 18px;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 30px;
            max-width: 420px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            height: 48px;
            padding: 0 30px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            transition: background .2s, transform .2s, box-shadow .2s;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(45, 109, 181, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            height: 48px;
            padding: 0 30px;
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.75);
            border-radius: var(--radius-btn);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 500;
            transition: background .2s, border-color .2s, transform .2s;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-primary:focus-visible,
        .btn-outline:focus-visible,
        .btn-cta:focus-visible,
        .btn-buy:focus-visible,
        .btn-nav:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .hero-visual {
            flex: 0 0 360px;
            display: flex;
            justify-content: center;
        }
        .visual-card {
            width: 300px;
            aspect-ratio: 4 / 5;
            background: #fff;
            border-radius: 18px;
            overflow: hidden;
            position: relative;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
            transform: rotate(1.5deg);
            transition: transform .4s ease;
        }
        .visual-card:hover {
            transform: rotate(0) translateY(-4px);
        }
        .visual-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .visual-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0) 52%, rgba(27, 42, 65, 0.55) 100%);
        }
        .visual-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }
        .visual-info {
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 18px;
            z-index: 2;
            color: #fff;
        }
        .visual-info h3 {
            font-size: 18px;
            font-weight: 700;
        }
        .visual-info p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.85);
            margin-top: 2px;
        }
        .hero-bottom-bar {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 24px;
            display: flex;
            justify-content: center;
            z-index: 3;
        }
        .hero-stats {
            display: flex;
            align-items: center;
            gap: 26px;
            background: rgba(0, 0, 0, 0.35);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 999px;
            padding: 12px 28px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.92);
            white-space: nowrap;
        }
        .hero-stats i {
            margin-right: 6px;
            color: rgba(255, 255, 255, 0.8);
        }

        /* ===== 爆款产品卡 ===== */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .product-card {
            display: block;
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .product-cover {
            position: relative;
            aspect-ratio: 4 / 5;
            overflow: hidden;
            background: var(--primary-light);
        }
        .product-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .product-card:hover .product-cover img {
            transform: scale(1.04);
        }
        .product-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }
        .product-body {
            padding: 18px 20px 16px;
        }
        .product-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .product-body p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .product-stats {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-weak);
        }
        .product-stats i {
            margin-right: 4px;
            color: var(--primary);
        }
        .view-link {
            margin-left: auto;
            color: var(--primary);
            font-weight: 500;
        }
        .product-card:hover .view-link {
            color: var(--accent);
        }

        /* ===== 种草清单 ===== */
        .choose-section {
            background: #EAF2FA;
        }
        .choose-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .choose-item {
            display: flex;
            align-items: center;
            gap: 26px;
            background: var(--card);
            border-radius: 14px;
            padding: 24px 28px;
            box-shadow: var(--shadow);
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .choose-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .choose-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            width: 60px;
            text-align: center;
            flex-shrink: 0;
            line-height: 1;
        }
        .choose-content {
            flex: 1;
            min-width: 0;
        }
        .choose-content h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 4px;
        }
        .choose-content p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .btn-buy {
            height: 40px;
            padding: 0 22px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
            transition: background .2s, transform .2s, box-shadow .2s;
        }
        .btn-buy:hover {
            background: #008E86;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(0, 168, 158, 0.32);
        }
        .btn-buy:active {
            transform: translateY(0);
        }

        /* ===== 口碑条 ===== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .review-card {
            background: var(--card);
            border-radius: var(--radius);
            padding: 26px 24px;
            box-shadow: var(--shadow);
            transition: transform .3s, box-shadow .3s;
            display: flex;
            flex-direction: column;
        }
        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .review-head {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .review-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 17px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .review-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
        }
        .review-stars {
            color: #F2994A;
            font-size: 13px;
            letter-spacing: 1px;
        }
        .review-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .review-tag {
            align-self: flex-start;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
        }

        /* ===== CTA 转化区 ===== */
        .cta-section {
            padding: 64px 0;
            background: var(--navy);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.16;
        }
        .cta-card {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
            background: rgba(27, 42, 65, 0.65);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 56px;
            backdrop-filter: blur(6px);
        }
        .cta-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: #9FD8FF;
            background: rgba(45, 109, 181, 0.28);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .cta-title {
            font-size: 30px;
            line-height: 1.35;
            color: #fff;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.7;
            margin-bottom: 22px;
        }
        .cta-contacts {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }
        .cta-contacts i {
            color: var(--accent);
            margin-right: 6px;
        }
        .cta-form {
            display: grid;
            gap: 10px;
            background: #fff;
            border-radius: 16px;
            padding: 28px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
        }
        .cta-form label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-title);
            margin-bottom: -4px;
        }
        .form-input,
        .form-textarea {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-title);
            background: var(--bg);
            outline: none;
            transition: border-color .2s, box-shadow .2s, background .2s;
            height: 44px;
        }
        .form-textarea {
            height: auto;
            padding: 10px 14px;
            resize: vertical;
            min-height: 72px;
        }
        .form-input:focus,
        .form-textarea:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(45, 109, 181, 0.18);
        }
        .btn-cta {
            height: 46px;
            background: var(--primary);
            color: #fff;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 4px;
            transition: background .2s, transform .2s, box-shadow .2s;
        }
        .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(45, 109, 181, 0.35);
        }
        .btn-cta:active {
            transform: translateY(0);
        }
        .form-tip {
            font-size: 12px;
            color: var(--text-weak);
            text-align: center;
            line-height: 1.5;
        }

        /* ===== 最新资讯 ===== */
        .news-list {
            display: grid;
            gap: 14px;
        }
        .news-item {
            display: flex;
            gap: 20px;
            align-items: center;
            background: var(--card);
            border-radius: var(--radius);
            padding: 18px;
            box-shadow: var(--shadow);
            transition: transform .3s, box-shadow .3s;
        }
        .news-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .news-thumb {
            width: 130px;
            height: 86px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--primary-light);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .news-item:hover .news-thumb img {
            transform: scale(1.04);
        }
        .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-content h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-title);
            line-height: 1.45;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-content p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 10px;
            font-size: 12px;
            color: var(--text-weak);
        }
        .news-tag {
            background: var(--accent-light);
            color: var(--accent);
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .news-more-link {
            margin-left: auto;
            color: var(--primary);
            font-weight: 500;
            white-space: nowrap;
        }
        .news-empty {
            background: var(--card);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            padding: 56px 24px;
            text-align: center;
            color: var(--text-weak);
        }
        .news-empty svg {
            margin-bottom: 14px;
        }
        .news-empty p {
            font-size: 15px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color .3s, box-shadow .3s;
        }
        .faq-item.open {
            border-left: 3px solid var(--primary);
            box-shadow: var(--shadow);
        }
        .faq-question {
            padding: 18px 22px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-title);
            cursor: pointer;
            user-select: none;
        }
        .faq-item.open .faq-question {
            color: var(--primary);
        }
        .faq-icon {
            width: 18px;
            height: 18px;
            position: relative;
            flex-shrink: 0;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--primary);
            border-radius: 2px;
            transition: transform .25s ease;
        }
        .faq-icon::before {
            width: 2px;
            height: 100%;
            left: 8px;
            top: 0;
        }
        .faq-icon::after {
            width: 100%;
            height: 2px;
            left: 0;
            top: 8px;
        }
        .faq-item.open .faq-icon::before {
            transform: scaleY(0);
        }
        .faq-answer {
            display: none;
            padding: 0 22px 20px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-body);
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--navy);
            color: #fff;
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .logo {
            color: #fff;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 14px;
            max-width: 300px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links a,
        .footer-links span {
            display: block;
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            margin-bottom: 10px;
            transition: color .2s;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            margin-top: 44px;
            padding-top: 22px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.48);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            :root {
                --space: 64px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-visual {
                flex-basis: 300px;
            }
            .visual-card {
                width: 260px;
            }
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-card {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space: 48px;
            }
            .container {
                padding: 0 16px;
            }
            .site-header {
                height: 60px;
            }
            .header-inner {
                height: 60px;
            }
            .nav-badge {
                display: none;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                padding: 16px 24px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 40px rgba(27, 42, 65, 0.1);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                font-size: 15px;
                padding: 10px 0;
                display: block;
                width: 100%;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                color: var(--primary);
            }
            .burger {
                display: flex;
            }
            .hero {
                margin-top: 60px;
                min-height: auto;
                background: linear-gradient(160deg, rgba(27, 42, 65, 0.72) 0%, rgba(45, 109, 181, 0.45) 70%, rgba(0, 168, 158, 0.2) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            }
            .hero-inner {
                flex-direction: column;
                gap: 36px;
                padding: 48px 0 64px;
            }
            .hero-content {
                max-width: 100%;
                text-align: center;
            }
            .hero-sub {
                margin-left: auto;
                margin-right: auto;
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
            }
            .hero-visual {
                flex-basis: auto;
                width: 260px;
                max-width: 100%;
            }
            .hero-bottom-bar {
                position: relative;
                bottom: auto;
                margin-top: 8px;
                padding-bottom: 0;
            }
            .hero-stats {
                flex-wrap: wrap;
                justify-content: center;
                gap: 14px;
                padding: 12px 20px;
                border-radius: 16px;
                font-size: 13px;
            }
            .product-grid {
                grid-template-columns: 1fr;
            }
            .choose-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
                padding: 22px;
            }
            .choose-num {
                width: auto;
                text-align: left;
                font-size: 28px;
            }
            .btn-buy {
                width: 100%;
                justify-content: center;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                padding: 40px 0;
            }
            .cta-card {
                padding: 28px 20px;
                border-radius: 16px;
            }
            .cta-title {
                font-size: 24px;
            }
            .cta-form {
                padding: 20px;
            }
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px;
            }
            .news-thumb {
                width: 100%;
                height: 180px;
            }
            .news-meta {
                flex-wrap: wrap;
                gap: 10px;
            }
            .news-more-link {
                margin-left: 0;
            }
            .faq-question {
                padding: 16px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-bottom {
                margin-top: 32px;
            }
            .section-head h2 {
                font-size: 25px;
            }
            .section-more {
                position: static;
                display: inline-block;
                margin-top: 4px;
            }
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 17px;
            }
            .logo-mark {
                width: 32px;
                height: 32px;
            }
            .btn-nav {
                padding: 0 14px;
                height: 34px;
                font-size: 13px;
            }
            .cta-contacts {
                flex-direction: column;
                gap: 10px;
            }
        }

/* roulang page: category1 */
/* ==========================================================
           开云电子 - 产品选型分类页视觉系统
           ========================================================== */
        :root {
            --primary: #2D6DB5;
            --primary-dark: #245A97;
            --primary-light: #EAF2FA;
            --accent: #00A89E;
            --accent-dark: #008C84;
            --success: #27AE60;
            --warning: #F2994A;
            --danger: #EB5757;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --dark: #1B2A41;
            --dark-2: #24364F;
            --title-color: #1B2A41;
            --text-color: #3E4F64;
            --muted: #6B7B90;
            --dim: #A0B0C2;
            --border: #E2E8F0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --shadow: 0 4px 20px rgba(45, 109, 181, 0.08);
            --shadow-hover: 0 8px 30px rgba(45, 109, 181, 0.14);
            --shadow-dark: 0 10px 36px rgba(27, 42, 65, 0.22);
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "SF Pro Display", -apple-system, sans-serif;
            --container: 1200px;
            --section-pad: 80px;
            --header-h: 72px;
            --transition: all .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--header-h) + 20px);
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-color);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
            border: 0;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        button {
            font-family: var(--font);
            cursor: pointer;
            border: none;
            background: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ---------- Header 导航 ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-h);
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: border-color .3s ease, box-shadow .3s ease;
        }

        .site-header.scrolled {
            border-bottom-color: var(--border);
            box-shadow: 0 4px 24px rgba(27, 42, 65, 0.05);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--title-color);
            letter-spacing: .4px;
            white-space: nowrap;
        }

        .logo .logo-mark {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(45, 109, 181, 0.28);
            flex-shrink: 0;
        }

        .logo:hover .logo-mark {
            background: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            margin-left: 24px;
        }

        .nav-links a {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: #3E4F64;
            padding: 6px 2px;
            letter-spacing: .5px;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: center;
            transition: transform .25s ease;
        }

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

        .nav-links a:hover::after {
            transform: scaleX(1);
        }

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

        .nav-links a.active::after {
            transform: scaleX(1);
        }

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

        .nav-badge {
            background: #FFE9D9;
            color: #D97B29;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }

        .btn-nav {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 36px;
            padding: 0 18px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-nav:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(45, 109, 181, 0.3);
        }

        .btn-nav:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: var(--radius-sm);
        }

        .burger span {
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--title-color);
            transition: var(--transition);
        }

        .burger:hover span {
            background: var(--primary);
        }

        .burger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .burger.open span:nth-child(2) {
            opacity: 0;
        }

        .burger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ---------- 页面 Hero ---------- */
        .page-hero {
            position: relative;
            padding: calc(var(--header-h) + 56px) 0 56px;
            background: linear-gradient(135deg, rgba(45, 109, 181, 0.16), rgba(0, 168, 158, 0.10)), url(/assets/images/backpic/back-1.png);
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to bottom, rgba(255, 255, 255, 0.20) 0%, rgba(245, 247, 250, 0.92) 100%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 20px;
            letter-spacing: .3px;
        }

        .hero-breadcrumb a {
            color: var(--muted);
        }

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

        .hero-breadcrumb i {
            font-size: 11px;
            margin: 0 6px;
            color: var(--dim);
        }

        .page-h1 {
            font-size: 42px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--title-color);
            max-width: 760px;
            letter-spacing: .5px;
        }

        .page-h1 .highlight {
            color: var(--primary);
            position: relative;
        }

        .page-h1 .highlight::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 4px;
            height: 8px;
            background: rgba(0, 168, 158, 0.18);
            z-index: -1;
            border-radius: 4px;
        }

        .page-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-color);
            max-width: 680px;
            margin-top: 18px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 32px;
        }

        .btn-primary,
        .btn-outline,
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(45, 109, 181, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(45, 109, 181, 0.32);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.85);
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background: rgba(45, 109, 181, 0.06);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(0, 168, 158, 0.24);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 168, 158, 0.32);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
            padding: 24px 28px;
            background: rgba(255, 255, 255, 0.85);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            max-width: 640px;
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .stat-num {
            font-family: var(--font-num);
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: var(--muted);
        }

        /* ---------- 通用板块 ---------- */
        .section {
            padding: var(--section-pad) 0;
        }

        .section-white {
            background: #fff;
        }

        .section-blue {
            background: var(--primary-light);
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }

        .section-title {
            font-size: 32px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--title-color);
            letter-spacing: .3px;
        }

        .section-sub {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            margin-top: 12px;
        }

        /* ---------- 产品卡片网格 ---------- */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .product-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .product-card:hover .card-title {
            color: var(--primary);
        }

        .card-media {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background: var(--primary-light);
        }

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

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

        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 10px rgba(0, 168, 158, 0.25);
        }

        .card-badge.orange {
            background: var(--warning);
            box-shadow: 0 4px 10px rgba(242, 153, 74, 0.25);
        }

        .card-badge.navy {
            background: var(--dark);
            box-shadow: 0 4px 10px rgba(27, 42, 65, 0.25);
        }

        .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--title-color);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--muted);
            margin-top: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid #F0F4F8;
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 13px;
            color: var(--muted);
        }

        .meta-item i {
            color: var(--dim);
        }

        .card-link {
            margin-left: auto;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        .card-link:hover {
            color: var(--accent);
        }

        /* ---------- 特色亮点区 ---------- */
        .feature-wrap {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
        }

        .feature-heading {
            font-size: 28px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--title-color);
            margin-bottom: 8px;
        }

        .feature-intro {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 480px;
        }

        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .feature-item {
            display: flex;
            gap: 16px;
            padding: 18px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .feature-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .feature-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .feature-icon.accent {
            background: rgba(0, 168, 158, 0.12);
            color: var(--accent);
        }

        .feature-text h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--title-color);
            margin-bottom: 4px;
        }

        .feature-text p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        .feature-visual {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
        }

        .feature-visual img {
            width: 100%;
            aspect-ratio: 4 / 4.4;
            object-fit: cover;
        }

        .visual-float-card {
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: 20px;
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--radius);
            padding: 18px 20px;
            backdrop-filter: blur(8px);
            box-shadow: var(--shadow-dark);
            border: 1px solid rgba(255, 255, 255, 0.6);
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .float-num {
            font-family: var(--font-num);
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
        }

        .float-text {
            font-size: 13px;
            color: var(--text-color);
            line-height: 1.5;
        }

        .float-text strong {
            display: block;
            color: var(--title-color);
            font-size: 14px;
        }

        /* ---------- 流程路径图 ---------- */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-grid::before {
            content: "";
            position: absolute;
            top: 30px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--primary) 0, var(--primary) 6px, transparent 6px, transparent 12px);
            opacity: .28;
            border-radius: 2px;
        }

        .process-step {
            position: relative;
            text-align: center;
            padding: 0 8px;
        }

        .step-num {
            position: relative;
            z-index: 2;
            width: 60px;
            height: 60px;
            margin: 0 auto;
            border-radius: 16px;
            background: #fff;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-family: var(--font-num);
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 18px rgba(45, 109, 181, 0.12);
        }

        .process-step:nth-child(2) .step-num {
            border-color: var(--accent);
            color: var(--accent);
        }

        .process-step:nth-child(3) .step-num {
            border-color: var(--warning);
            color: #D97B29;
        }

        .process-step:nth-child(4) .step-num {
            border-color: var(--success);
            color: var(--success);
        }

        .step-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--title-color);
            margin-top: 16px;
        }

        .step-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            margin-top: 6px;
        }

        /* ---------- 适用场景 ---------- */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scenario-card {
            display: flex;
            gap: 18px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .scenario-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(45, 109, 181, 0.12), rgba(0, 168, 158, 0.10));
            color: var(--primary);
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .scenario-name {
            font-size: 17px;
            font-weight: 600;
            color: var(--title-color);
            margin-bottom: 6px;
        }

        .scenario-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* ---------- FAQ ---------- */
        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .faq-item.open {
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--title-color);
            text-align: left;
            background: transparent;
            transition: var(--transition);
            font-family: var(--font);
        }

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

        .faq-icon {
            margin-left: auto;
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: var(--transition);
        }

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

        .faq-answer {
            display: none;
            padding: 0 22px 20px 22px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-color);
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open {
            border-left: 3px solid var(--primary);
        }

        /* ---------- CTA 跟买转换区 ---------- */
        .cta-section {
            background: var(--dark);
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(circle at 85% 15%, rgba(45, 109, 181, 0.25) 0%, transparent 50%),
                radial-gradient(circle at 10% 85%, rgba(0, 168, 158, 0.20) 0%, transparent 45%);
            pointer-events: none;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .cta-left {
            color: #fff;
        }

        .cta-left .cta-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 168, 158, 0.18);
            border: 1px solid rgba(0, 168, 158, 0.35);
            color: #4FD1C7;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
            margin-bottom: 20px;
            letter-spacing: .5px;
        }

        .cta-title {
            font-size: 34px;
            line-height: 1.35;
            font-weight: 700;
            color: #fff;
            letter-spacing: .3px;
        }

        .cta-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 16px;
            max-width: 460px;
        }

        .cta-stats {
            display: flex;
            gap: 28px;
            margin-top: 32px;
        }

        .cta-stat {
            border-left: 2px solid rgba(0, 168, 158, 0.6);
            padding-left: 14px;
        }

        .cta-stat .stat-num {
            color: #fff;
            font-size: 26px;
        }

        .cta-stat .stat-label {
            color: rgba(255, 255, 255, 0.55);
            font-size: 13px;
        }

        .cta-right {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 36px 32px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .form-title {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }

        .form-subtitle {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 22px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 6px;
        }

        .form-input,
        .form-textarea {
            width: 100%;
            height: 42px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            color: #fff;
            font-size: 14px;
            font-family: var(--font);
            transition: var(--transition);
        }

        .form-input::placeholder,
        .form-textarea::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 158, 0.25);
        }

        .form-textarea {
            height: 88px;
            padding: 12px 14px;
            resize: vertical;
        }

        .form-btn {
            width: 100%;
            height: 46px;
            background: var(--accent);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: var(--transition);
            margin-top: 6px;
        }

        .form-btn:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 168, 158, 0.35);
        }

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

        .form-privacy {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
            margin-top: 12px;
            line-height: 1.6;
        }

        /* ---------- Footer 页脚 ---------- */
        .site-footer {
            background: var(--primary-light);
            padding: 60px 0 24px;
            border-top: 1px solid var(--border);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .logo {
            color: var(--title-color);
            font-size: 19px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
            margin-top: 14px;
            max-width: 280px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--title-color);
            margin-bottom: 14px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
            color: var(--muted);
        }

        .footer-links a {
            color: var(--muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--primary);
            transform: translateX(2px);
        }

        .footer-links span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--muted);
        }

        .footer-links i {
            color: var(--primary);
            font-size: 13px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(226, 232, 240, 0.9);
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--dim);
            letter-spacing: .3px;
        }

        /* ---------- 响应式 ---------- */
        @media (max-width: 991px) {
            :root {
                --section-pad: 64px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

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

            .feature-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .feature-visual {
                order: -1;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 36px 24px;
            }

            .process-grid::before {
                display: none;
            }

            .cta-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --header-h: 60px;
                --section-pad: 48px;
            }

            .container {
                padding: 0 16px;
            }

            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 12px 0;
                margin: 0;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 24px rgba(27, 42, 65, 0.08);
                transform: translateY(-120%);
                transition: transform .35s ease;
                z-index: 999;
            }

            .nav-links.open {
                transform: translateY(0);
            }

            .nav-links a {
                width: 100%;
                padding: 13px 24px;
                font-size: 15px;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-links a.active {
                background: var(--primary-light);
                border-left: 3px solid var(--primary);
            }

            .nav-badge {
                display: none;
            }

            .burger {
                display: flex;
            }

            .btn-nav {
                display: none;
            }

            .page-hero {
                padding: calc(var(--header-h) + 40px) 0 40px;
            }

            .page-h1 {
                font-size: 30px;
            }

            .page-subtitle {
                font-size: 15px;
            }

            .hero-cta-group {
                flex-direction: column;
                align-items: stretch;
            }

            .hero-cta-group .btn-primary,
            .hero-cta-group .btn-outline {
                width: 100%;
            }

            .hero-stats {
                gap: 16px;
                padding: 18px;
                flex-direction: column;
            }

            .stat-num {
                font-size: 20px;
            }

            .section-title {
                font-size: 25px;
            }

            .section-sub {
                font-size: 15px;
            }

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

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

            .cta-title {
                font-size: 26px;
            }

            .cta-stats {
                flex-direction: column;
                gap: 14px;
            }

            .cta-right {
                padding: 26px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .process-grid {
                grid-template-columns: 1fr;
            }

            .footer-links {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
    --brand: #2D6DB5;
    --brand-hover: #1E5A9E;
    --accent: #00A89E;
    --success: #27AE60;
    --warning: #F2994A;
    --error: #EB5757;
    --bg: #F5F7FA;
    --card: #FFFFFF;
    --section-alt: #EAF2FA;
    --dark-bg: #1B2A41;
    --title: #1B2A41;
    --text: #3E4F64;
    --text-light: #6B7B90;
    --text-placeholder: #A0B0C2;
    --border: #E2E8F0;
    --radius: 12px;
    --radius-btn: 8px;
    --radius-pill: 999px;
    --shadow: 0 4px 20px rgba(45,109,181,0.08);
    --shadow-hover: 0 8px 30px rgba(45,109,181,0.14);
    --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    --container: 1200px;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--brand); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--brand-hover); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
ul, ol { margin: 0; padding: 0; }
h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.3; color: var(--title); font-weight: 700; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== 按钮体系 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 28px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background .25s ease, color .25s ease, border-color .25s ease, transform .2s ease, box-shadow .2s ease;
    white-space: nowrap;
    text-align: center;
}
.btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(45,109,181,.25); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: transparent; color: var(--brand); border-color: var(--brand); }
.btn-outline:hover { background: rgba(45,109,181,.06); color: var(--brand-hover); border-color: var(--brand-hover); transform: translateY(-1px); }
.btn-outline:active { transform: translateY(0); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { filter: brightness(.95); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0,168,158,.25); }
.btn-accent:active { transform: translateY(0); }
.btn-white { background: #fff; color: var(--brand); }
.btn-white:hover { background: var(--section-alt); color: var(--brand-hover); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(255,255,255,.18); }
.btn-lg { height: 48px; padding: 0 36px; font-size: 16px; }

/* ===== Header 导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
    border-color: var(--border);
    box-shadow: 0 4px 20px rgba(27,42,65,.06);
}
.header-inner {
    display: flex;
    align-items: center;
    height: 72px;
    gap: 20px;
}
.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--title);
    letter-spacing: .5px;
    line-height: 1;
    flex-shrink: 0;
}
.logo:hover { color: var(--title); }
.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--brand);
    box-shadow: 0 4px 12px rgba(45,109,181,.28);
}
.nav-links {
    display: flex;
    gap: 28px;
    margin-left: 28px;
}
.nav-links a {
    font-size: 15px;
    color: var(--text);
    padding: 8px 2px;
    border-bottom: 2px solid transparent;
    transition: color .2s ease, border-color .2s ease;
    letter-spacing: .2px;
}
.nav-links a:hover { color: var(--brand); }
.nav-links a.active { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }
.nav-cta {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav-badge {
    background: #FFF3E6;
    color: #D66A00;
    font-size: 12px;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    letter-spacing: .2px;
}
.btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 36px;
    padding: 0 18px;
    background: var(--brand);
    color: #fff;
    border-radius: var(--radius-btn);
    font-size: 14px;
    font-weight: 600;
    transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}
.btn-nav:hover { background: var(--brand-hover); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(45,109,181,.24); }
.btn-nav:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    padding: 0 10px;
    background: transparent;
    transition: background .2s ease;
}
.burger:hover { background: var(--section-alt); }
.burger span { display: block; height: 2px; background: var(--title); border-radius: 2px; transition: transform .3s ease, opacity .3s ease; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Main ===== */
.main { padding-top: 72px; }

/* ===== 面包屑 ===== */
.breadcrumb-bar {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-light);
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-light); transition: color .2s ease; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { color: #C9D4E0; }
.breadcrumb .current { color: var(--text); font-weight: 500; max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ===== 文章标题区 ===== */
.article-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 48px 0 40px;
    background: linear-gradient(180deg, #fff 0%, #F8FBFE 100%);
}
.category-badge {
    display: inline-block;
    background: var(--section-alt);
    color: var(--brand);
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    margin-bottom: 16px;
    letter-spacing: .3px;
}
.article-title {
    font-size: 40px;
    color: var(--title);
    line-height: 1.25;
    margin: 12px 0 18px;
    font-weight: 700;
    max-width: 860px;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 14px;
    color: var(--text-light);
    flex-wrap: wrap;
}
.article-meta i { margin-right: 5px; color: var(--brand); opacity: .75; }
.article-meta .dot { opacity: .4; }

/* ===== 正文阅读区 ===== */
.article-content { padding: 48px 0 40px; }
.article-content-inner {
    max-width: 780px;
    margin: 0 auto;
    background: var(--card);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 48px 56px;
}
.article-content-body { font-size: 16px; line-height: 1.8; color: var(--text); word-break: break-word; }
.article-content-body h2 { font-size: 28px; color: var(--title); margin: 40px 0 16px; font-weight: 700; }
.article-content-body h3 { font-size: 22px; color: var(--title); margin: 32px 0 12px; font-weight: 700; }
.article-content-body h4 { font-size: 18px; color: var(--title); margin: 28px 0 10px; font-weight: 600; }
.article-content-body p { margin: 16px 0; }
.article-content-body img { border-radius: 8px; margin: 24px auto; height: auto; }
.article-content-body blockquote {
    margin: 24px 0;
    padding: 16px 20px;
    background: var(--section-alt);
    border-left: 4px solid var(--brand);
    border-radius: 0 8px 8px 0;
    color: var(--text-light);
    font-size: 15px;
}
.article-content-body ul, .article-content-body ol { margin: 16px 0; padding-left: 22px; }
.article-content-body li { margin: 8px 0; }
.article-content-body a { color: var(--brand); text-decoration: underline; text-underline-offset: 2px; }
.article-content-body a:hover { color: var(--brand-hover); }
.article-content-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14px; }
.article-content-body table th, .article-content-body table td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
.article-content-body table th { background: var(--section-alt); color: var(--title); font-weight: 600; }
.article-content-body code { background: var(--section-alt); padding: 2px 6px; border-radius: 4px; font-size: .92em; }
.article-content-body pre { background: var(--dark-bg); color: #E6EDF5; padding: 20px; border-radius: 8px; overflow-x: auto; margin: 24px 0; font-size: 14px; line-height: 1.6; }
.article-content-body pre code { background: transparent; padding: 0; color: inherit; }

/* ===== 文章空状态 ===== */
.article-empty { text-align: center; padding: 72px 24px; }
.article-empty i { font-size: 44px; color: var(--text-placeholder); margin-bottom: 16px; }
.article-empty p { font-size: 18px; color: var(--text-light); margin-bottom: 24px; }
.article-empty .btn { margin-top: 8px; }

/* ===== 文章底部操作条 ===== */
.article-bottom {
    max-width: 780px;
    margin: 28px auto 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
}

/* ===== 相关推荐区 ===== */
.related { padding: 56px 0 64px; }
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 28px;
    gap: 16px;
}
.section-title { font-size: 28px; font-weight: 700; color: var(--title); line-height: 1.3; }
.section-link { font-size: 14px; color: var(--text-light); transition: color .2s ease; }
.section-link:hover { color: var(--brand); }
.section-link i { margin-left: 4px; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform .25s ease, box-shadow .25s ease;
    display: flex;
    flex-direction: column;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.related-card-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.related-card-body h3 { font-size: 16px; font-weight: 700; color: var(--title); line-height: 1.5; transition: color .2s ease; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card:hover .related-card-body h3 { color: var(--brand); }
.related-card-body p { font-size: 13px; color: var(--text-light); margin: 0; line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-card-body .link { font-size: 14px; color: var(--brand); font-weight: 600; margin-top: auto; padding-top: 8px; }
.related-card-body .link i { margin-left: 4px; transition: transform .2s ease; display: inline-block; }
.related-card:hover .related-card-body .link i { transform: translateX(4px); }

/* ===== CTA 联系 ===== */
.contact { padding: 64px 0 80px; }
.contact-card {
    background: var(--dark-bg);
    border-radius: 20px;
    padding: 56px 56px;
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.contact-card::after {
    content: "";
    position: absolute;
    right: -120px;
    top: -120px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(45,109,181,.35) 0%, transparent 70%);
    pointer-events: none;
}
.contact-info { position: relative; z-index: 1; }
.contact-info h2 { color: #fff; font-size: 30px; line-height: 1.3; margin-bottom: 16px; }
.contact-info p { color: #B8C6D9; font-size: 15px; line-height: 1.8; margin: 0 0 24px; }
.contact-info .contact-phone { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: #fff; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: 12px; padding: 12px 20px; margin-bottom: 14px; }
.contact-info .contact-phone i { color: var(--accent); }
.contact-tips { font-size: 13px; color: rgba(255,255,255,.5); margin-top: 16px; }
.contact-form { display: grid; gap: 16px; position: relative; z-index: 1; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; color: #A8B6C8; font-weight: 500; }
.form-group input,
.form-group textarea {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 8px;
    color: #fff;
    padding: 12px 14px;
    font-size: 14px;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
    width: 100%;
}
.form-group textarea { resize: vertical; min-height: 92px; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,.38); }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0,168,158,.2); background: rgba(255,255,255,.12); }
.contact-form .btn { width: 100%; }

/* ===== Footer ===== */
.site-footer {
    background: #E3EDF7;
    padding: 64px 0 0;
    border-top: 1px solid var(--border);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}
.site-footer .logo { color: var(--title); }
.footer-brand p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin: 16px 0 0; max-width: 280px; }
.footer-title { font-size: 15px; font-weight: 700; color: var(--title); margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: var(--text); transition: color .2s ease, padding-left .2s ease; }
.footer-links a:hover { color: var(--brand); padding-left: 4px; }
.footer-links span { font-size: 14px; color: var(--text); display: inline-flex; align-items: center; gap: 8px; }
.footer-links span i { color: var(--brand); width: 16px; }
.footer-bottom {
    border-top: 1px solid rgba(45,109,181,.12);
    padding: 20px 0;
    text-align: center;
}
.footer-bottom p { font-size: 13px; color: var(--text-light); margin: 0; }

/* ===== 响应式 ===== */
@media (max-width: 991px) {
    .container { padding: 0 24px; }
    .nav-links { gap: 18px; margin-left: 18px; }
    .nav-links a { font-size: 14px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-card { grid-template-columns: 1fr; padding: 44px 36px; gap: 32px; }
    .article-title { font-size: 34px; }
    .article-content-inner { padding: 40px 36px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 767px) {
    .container { padding: 0 16px; }
    .site-header, .main { height: auto; }
    .main { padding-top: 60px; }
    .site-header, .header-inner { height: 60px; }
    .site-header { background: rgba(255,255,255,.92); }
    .nav-badge { display: none; }
    .btn-nav { padding: 0 14px; font-size: 13px; }
    .logo { font-size: 18px; }
    .burger {
        display: flex;
        margin-left: 4px;
    }
    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 20px 24px;
        gap: 0;
        margin: 0;
        box-shadow: 0 16px 32px rgba(27,42,65,.1);
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: transform .3s ease, opacity .3s ease, visibility .3s ease;
        border-bottom: 1px solid var(--border);
    }
    .nav-links.open { transform: translateY(0); opacity: 1; visibility: visible; }
    .nav-links a {
        padding: 14px 4px;
        font-size: 16px;
        border-bottom: 1px solid var(--border);
        border-bottom-style: dashed;
        display: block;
    }
    .nav-links a:last-child { border-bottom: none; }
    .nav-links a.active { border-bottom: 2px solid var(--brand); }
    .nav-cta { gap: 8px; }
    .btn-nav { display: none; }
    .breadcrumb-bar { padding: 12px 0; }
    .breadcrumb .current { max-width: 220px; }
    .article-header { padding: 32px 0 28px; }
    .article-title { font-size: 27px; line-height: 1.35; margin-bottom: 14px; }
    .article-meta { gap: 10px; font-size: 13px; }
    .article-meta i { margin-right: 3px; }
    .article-content { padding: 28px 0 32px; }
    .article-content-inner { padding: 24px 18px; border-radius: 12px; }
    .article-content-body { font-size: 15px; }
    .article-content-body h2 { font-size: 23px; margin-top: 30px; }
    .article-content-body h3 { font-size: 19px; }
    .article-content-body blockquote { padding: 14px 16px; font-size: 14px; }
    .article-bottom { flex-direction: column; }
    .article-bottom .btn { width: 100%; }
    .related { padding: 40px 0 48px; }
    .section-head { margin-bottom: 20px; }
    .section-title { font-size: 24px; }
    .related-grid { grid-template-columns: 1fr; gap: 16px; }
    .related-card-body { padding: 16px 18px 18px; }
    .contact { padding: 44px 0 56px; }
    .contact-card { padding: 36px 24px; border-radius: 16px; }
    .contact-info h2 { font-size: 25px; }
    .contact-info p { font-size: 14px; }
    .contact-info .contact-phone { font-size: 17px; padding: 10px 16px; }
    .contact-form .btn { width: 100%; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 32px; }
    .site-footer { padding-top: 48px; }
}

@media (min-width: 768px) and (max-width: 991px) {
    .btn-nav { display: none; }
    .nav-badge { display: none; }
}

/* roulang page: category2 */
:root {
            --primary: #2D6DB5;
            --primary-dark: #245a96;
            --primary-light: #EAF2FA;
            --accent: #00A89E;
            --success: #27AE60;
            --warning: #F2994A;
            --error: #EB5757;
            --background: #F5F7FA;
            --card-bg: #FFFFFF;
            --dark: #1B2A41;
            --heading: #1B2A41;
            --body: #3E4F64;
            --sub-text: #6B7B90;
            --placeholder: #A0B0C2;
            --border: #E2E8F0;
            --radius-lg: 20px;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 4px 20px rgba(45, 109, 181, 0.08);
            --shadow-hover: 0 8px 30px rgba(45, 109, 181, 0.14);
            --transition: 0.25s ease;
            --container-width: 1200px;
            --header-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--background);
            color: var(--body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

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

        input,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .section-alt {
            background: var(--card-bg);
        }

        .section-tint {
            background: var(--primary-light);
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-head .eyebrow {
            display: inline-block;
            background: rgba(0, 168, 158, 0.10);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 32px;
            color: var(--heading);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--sub-text);
            line-height: 1.7;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

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

        .btn-outline:hover {
            background: rgba(45, 109, 181, 0.06);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-lg {
            height: 48px;
            padding: 0 32px;
            font-size: 16px;
        }

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

        @media (max-width: 767px) {
            .btn-lg {
                width: 100%;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: all var(--transition);
        }

        .site-header.scrolled {
            border-bottom-color: var(--border);
            box-shadow: 0 4px 20px rgba(27, 42, 65, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--heading);
            letter-spacing: 0.3px;
            flex-shrink: 0;
        }

        .logo .logo-mark {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(45, 109, 181, 0.24);
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--body);
            letter-spacing: 0.5px;
            padding: 8px 0;
            transition: color var(--transition);
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 999px;
            transition: width var(--transition);
        }

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

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

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

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-badge {
            display: inline-flex;
            align-items: center;
            background: #FDE8E8;
            color: var(--error);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .btn-nav {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 36px;
            padding: 0 16px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .btn-nav:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(45, 109, 181, 0.3);
        }

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

        .burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            padding: 8px;
            border-radius: 6px;
        }

        .burger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--heading);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .burger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .burger.open span:nth-child(2) {
            opacity: 0;
        }

        .burger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

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

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background-image: linear-gradient(100deg, rgba(27, 42, 65, 0.82) 0%, rgba(27, 42, 65, 0.52) 60%, rgba(45, 109, 181, 0.25) 100%), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: calc(var(--header-height) + 48px) 0 64px;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='0.08' stroke-width='1'%3E%3Cpath d='M0 30h60M30 0v60'/%3E%3Cpath d='M10 10h40v40H10z'/%3E%3Ccircle cx='30' cy='30' r='3'/%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            text-align: center;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.22);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: #EAF2FA;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            color: var(--accent);
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: 1px;
            color: #ffffff;
        }

        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.88);
            max-width: 560px;
            margin: 0 auto 32px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-actions .btn-outline {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.08);
        }

        .hero-actions .btn-outline:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: #fff;
            color: #fff;
        }

        .hero-metrics {
            display: flex;
            justify-content: center;
            gap: 32px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .hero-metric {
            text-align: center;
            padding: 12px 20px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-card);
            backdrop-filter: blur(6px);
            min-width: 120px;
        }

        .hero-metric strong {
            display: block;
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .hero-metric span {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.72);
        }

        .hero-scroll {
            position: absolute;
            bottom: 24px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.6);
            font-size: 20px;
            animation: float-down 2s ease-in-out infinite;
        }

        @keyframes float-down {
            0%, 100% {
                transform: translate(-50%, 0);
            }
            50% {
                transform: translate(-50%, 6px);
            }
        }

        /* ===== Solutions Overview ===== */
        .solution-intro {
            background: var(--card-bg);
        }

        .solution-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .solution-item {
            padding: 28px 20px;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            background: var(--card-bg);
            text-align: center;
            transition: all var(--transition);
        }

        .solution-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(45, 109, 181, 0.3);
        }

        .solution-item .icon-wrap {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }

        .solution-item h3 {
            font-size: 16px;
            color: var(--heading);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .solution-item p {
            font-size: 13px;
            color: var(--sub-text);
            line-height: 1.6;
        }

        /* ===== Industry Scenarios ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

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

        .scenario-card .cover {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

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

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

        .scenario-card .cover .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .scenario-body {
            padding: 20px 20px 24px;
        }

        .scenario-body h3 {
            font-size: 18px;
            color: var(--heading);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .scenario-body p {
            font-size: 14px;
            color: var(--sub-text);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .scenario-body .link-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .scenario-body .link-more:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ===== Comparison Panel ===== */
        .compare-panel {
            background: var(--dark);
            border-radius: var(--radius-lg);
            padding: 56px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .compare-panel::before {
            content: "";
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(45, 109, 181, 0.35);
            filter: blur(70px);
        }

        .compare-panel h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .compare-panel .desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            margin-bottom: 40px;
        }

        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .compare-col {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            padding: 28px;
            backdrop-filter: blur(4px);
        }

        .compare-col h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .compare-col h3 i {
            font-size: 18px;
        }

        .compare-col ul {
            list-style: none;
        }

        .compare-col li {
            padding: 8px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.82);
            display: flex;
            gap: 10px;
            align-items: flex-start;
            line-height: 1.5;
        }

        .compare-col li i {
            margin-top: 4px;
            font-size: 13px;
        }

        .compare-col.traditional li i {
            color: var(--error);
            opacity: 0.7;
        }

        .compare-col.ky li i {
            color: var(--accent);
        }

        .compare-col.traditional {
            opacity: 0.85;
        }

        /* ===== Process ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            position: relative;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 16px;
            text-align: center;
            transition: all var(--transition);
        }

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

        .step-item .step-num {
            counter-increment: step;
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 12px;
            display: block;
        }

        .step-item .step-num::before {
            content: "0" counter(step);
        }

        .step-item h3 {
            font-size: 15px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--sub-text);
            line-height: 1.5;
        }

        .step-arrow {
            position: absolute;
            top: 40%;
            right: -14px;
            color: var(--primary);
            font-size: 14px;
            opacity: 0.4;
            z-index: 3;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item.active {
            border-left: 3px solid var(--primary);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: transparent;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--heading);
            transition: color var(--transition);
            text-align: left;
        }

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

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1.5px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--primary);
            flex-shrink: 0;
            transition: all var(--transition);
        }

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

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

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--body);
        }

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

        /* ===== CTA / Contact ===== */
        .cta-section {
            position: relative;
            background: var(--dark);
            border-radius: var(--radius-lg);
            padding: 56px;
            color: #fff;
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -20px;
            left: 30%;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(0, 168, 158, 0.2);
            filter: blur(80px);
        }

        .cta-text {
            position: relative;
            z-index: 2;
        }

        .cta-text h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-text p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .cta-features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cta-features li {
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.88);
        }

        .cta-features li i {
            color: var(--accent);
        }

        .cta-form-wrap {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 32px;
            color: var(--body);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
            position: relative;
            z-index: 2;
        }

        .cta-form-wrap h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 4px;
        }

        .cta-form-wrap .form-tip {
            font-size: 13px;
            color: var(--sub-text);
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--heading);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            padding: 12px 14px;
            font-size: 14px;
            color: var(--body);
            background: var(--card-bg);
            transition: all var(--transition);
            resize: vertical;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: 2px solid var(--primary);
            outline-offset: 0;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(45, 109, 181, 0.12);
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--placeholder);
        }

        .form-submit {
            width: 100%;
            margin-top: 8px;
        }

        .form-note {
            font-size: 12px;
            color: var(--placeholder);
            text-align: center;
            margin-top: 12px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #E3EDF7;
            margin-top: 0;
        }

        .site-footer .container {
            padding-top: 56px;
            padding-bottom: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--body);
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--heading);
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
            color: var(--body);
        }

        .footer-links a {
            color: var(--body);
            transition: color var(--transition);
        }

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

        .footer-links span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--body);
        }

        .footer-links i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(27, 42, 65, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--sub-text);
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .process-steps {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }

            .step-arrow {
                display: none;
            }

            .cta-section {
                grid-template-columns: 1fr;
                padding: 40px 28px;
            }

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

        @media (max-width: 767px) {
            .section {
                padding: 48px 0;
            }

            .section-head {
                margin-bottom: 32px;
            }

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

            .container {
                padding: 0 16px;
            }

            .site-header {
                height: 60px;
            }

            .header-inner {
                gap: 8px;
            }

            .logo {
                font-size: 17px;
            }

            .logo .logo-mark {
                width: 32px;
                height: 32px;
                border-radius: 8px;
            }

            .logo .logo-mark svg {
                width: 16px;
                height: 16px;
            }

            .nav-links {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 30px rgba(27, 42, 65, 0.1);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.3s ease;
                pointer-events: none;
                z-index: 999;
            }

            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-links a {
                width: 100%;
                padding: 12px 0;
                font-size: 15px;
                border-bottom: 1px solid #f0f3f8;
            }

            .nav-links a::after {
                display: none;
            }

            .nav-badge {
                display: none;
            }

            .btn-nav {
                height: 34px;
                padding: 0 12px;
                font-size: 13px;
            }

            .burger {
                display: flex;
            }

            .hero {
                min-height: 84vh;
                padding-top: calc(60px + 48px);
                background-position: 70% center;
            }

            .hero h1 {
                font-size: 30px;
                line-height: 1.3;
            }

            .hero-sub {
                font-size: 15px;
            }

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

            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }

            .hero-metrics {
                gap: 12px;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .hero-metric {
                padding: 10px 14px;
                min-width: 90px;
            }

            .hero-metric strong {
                font-size: 20px;
            }

            .solution-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

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

            .scenario-card .cover {
                height: 180px;
            }

            .compare-panel {
                padding: 28px 20px;
            }

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

            .compare-col {
                padding: 20px;
            }

            .process-steps {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .step-item {
                display: flex;
                align-items: center;
                text-align: left;
                gap: 16px;
                padding: 18px;
            }

            .step-item .step-num {
                margin-bottom: 0;
                font-size: 24px;
                min-width: 40px;
            }

            .cta-section {
                padding: 32px 20px;
                gap: 32px;
            }

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

            .cta-form-wrap {
                padding: 24px 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-links {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 8px 20px;
            }

            .footer-links span {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .hero-metrics {
                gap: 8px;
            }

            .hero-metric {
                min-width: 80px;
                padding: 8px 10px;
            }

            .hero-metric strong {
                font-size: 17px;
            }

            .hero-metric span {
                font-size: 11px;
            }

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