:root {
            --primary: #1e56a0;
            --primary-dark: #163d73;
            --primary-light: #dbeafe;
            --accent: #0d8b8b;
            --accent-light: #ccfbf1;
            --bg: #f6f8fb;
            --surface: #ffffff;
            --text: #1e293b;
            --text-soft: #5b6b7f;
            --text-light: #8b9db0;
            --border: #e2e8f0;
            --radius: 16px;
            --shadow-sm: 0 1px 3px rgba(30, 41, 59, .06), 0 1px 2px rgba(30, 41, 59, .04);
            --shadow-md: 0 6px 18px rgba(30, 41, 59, .08), 0 2px 6px rgba(30, 41, 59, .04);
            --shadow-lg: 0 12px 32px rgba(30, 41, 59, .10), 0 4px 12px rgba(30, 41, 59, .06);
            --transition: .3s cubic-bezier(.4, 0, .2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Roboto, "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            border: none;
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding {
            padding: 92px 0;
        }

        /* Header & Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow .3s;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.06rem;
            letter-spacing: .2px;
            white-space: nowrap;
            color: var(--text);
            flex-shrink: 0;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.4rem;
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-search {
            flex: 1;
            max-width: 460px;
            margin: 0 16px;
            position: relative;
        }
        .nav-search form {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 8px 12px 8px 20px;
            transition: all var(--transition);
        }
        .nav-search form:focus-within {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(30, 86, 160, .10);
        }
        .nav-search input {
            flex: 1;
            border: none;
            background: transparent;
            outline: none;
            font-size: .9rem;
            color: var(--text);
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }
        .nav-search button {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition), transform var(--transition);
            flex-shrink: 0;
        }
        .nav-search button:hover {
            background: var(--primary-dark);
            transform: scale(1.04);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .nav-links a {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: .92rem;
            font-weight: 500;
            color: var(--text-soft);
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .nav-cta {
            background: var(--accent);
            color: #fff;
            border-radius: 999px;
            padding: 8px 20px;
            font-size: .9rem;
            font-weight: 600;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: #0a7373;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .nav-toggle {
            display: none;
            background: transparent;
            color: var(--text);
            padding: 8px;
            border-radius: 8px;
            font-size: 1.3rem;
            line-height: 1;
        }

        /* Hero */
        .hero {
            position: relative;
            background-image: linear-gradient(100deg, rgba(15, 35, 65, .93) 0%, rgba(23, 60, 100, .82) 45%, rgba(11, 74, 74, .55) 100%), url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            padding: 96px 0 84px;
            color: #fff;
            overflow: hidden;
        }
        .hero .container {
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 64px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(6px);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: .82rem;
            font-weight: 500;
            letter-spacing: .4px;
            margin-bottom: 22px;
        }
        .hero h1 {
            font-size: 2.4rem;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: .3px;
            max-width: 540px;
        }
        .hero h1 em {
            font-style: normal;
            color: #93c5fd;
        }
        .hero-desc {
            font-size: 1rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 32px;
        }
        .btn-primary-hero {
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .95rem;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, .15);
        }
        .btn-primary-hero:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .2);
        }
        .btn-ghost-hero {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-weight: 600;
            padding: 14px 26px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .95rem;
            transition: all var(--transition);
        }
        .btn-ghost-hero:hover {
            background: rgba(255, 255, 255, .2);
            border-color: rgba(255, 255, 255, .6);
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-stats .stat {
            text-align: left;
        }
        .hero-stats .num {
            font-size: 1.45rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stats .label {
            font-size: .78rem;
            color: rgba(255, 255, 255, .65);
        }
        .hero-card {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .18);
            backdrop-filter: blur(20px);
            border-radius: 24px;
            padding: 28px;
            color: #fff;
            box-shadow: 0 20px 50px rgba(0, 0, 0, .25);
        }
        .hero-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-card-sub {
            font-size: .82rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: 20px;
        }
        .progress-ring-wrap {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 22px;
        }
        .progress-ring {
            position: relative;
            width: 96px;
            height: 96px;
            flex-shrink: 0;
        }
        .progress-ring svg {
            transform: rotate(-90deg);
            width: 100%;
            height: 100%;
        }
        .progress-ring .ring-bg {
            fill: none;
            stroke: rgba(255, 255, 255, .15);
            stroke-width: 8;
        }
        .progress-ring .ring-fg {
            fill: none;
            stroke: #60a5fa;
            stroke-width: 8;
            stroke-linecap: round;
            stroke-dasharray: 326.7;
            stroke-dashoffset: 91.5;
        }
        .progress-ring .ring-text {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        .progress-ring .ring-text .pct {
            font-size: 1.2rem;
            font-weight: 800;
            line-height: 1;
        }
        .progress-ring .ring-text .pct-label {
            font-size: .62rem;
            opacity: .75;
        }
        .progress-info {
            flex: 1;
        }
        .progress-info .p-title {
            font-weight: 700;
            font-size: .95rem;
            margin-bottom: 4px;
        }
        .progress-info .p-desc {
            font-size: .8rem;
            color: rgba(255, 255, 255, .65);
            line-height: 1.5;
        }
        .tier-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 18px;
        }
        .tier-card {
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: 14px;
            padding: 14px 12px;
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
        }
        .tier-card:hover {
            background: rgba(255, 255, 255, .18);
            border-color: rgba(255, 255, 255, .3);
            transform: translateY(-2px);
        }
        .tier-card .tier-name {
            font-size: .82rem;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .tier-card .tier-price {
            font-size: .9rem;
            font-weight: 800;
            color: #93c5fd;
            margin-bottom: 6px;
        }
        .tier-card .tier-desc {
            font-size: .68rem;
            color: rgba(255, 255, 255, .6);
            line-height: 1.4;
        }
        .hero-support-btn {
            width: 100%;
            background: linear-gradient(135deg, #3b82f6, #2563eb);
            color: #fff;
            font-weight: 700;
            font-size: .92rem;
            border-radius: 12px;
            padding: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(37, 99, 235, .35);
        }
        .hero-support-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(37, 99, 235, .45);
        }

        /* Section Common */
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 52px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .8rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: .4px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: .2px;
        }
        .section-head p {
            color: var(--text-soft);
            font-size: .96rem;
            line-height: 1.8;
        }

        /* News */
        .news-section {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 44px;
            align-items: start;
        }
        .news-list {
            list-style: none;
        }
        .news-item {
            display: flex;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            transition: all var(--transition);
            align-items: center;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item img {
            width: 100px;
            height: 70px;
            object-fit: cover;
            border-radius: 12px;
            flex-shrink: 0;
        }
        .news-item .news-content {
            flex: 1;
        }
        .news-item .news-meta {
            font-size: .75rem;
            color: var(--text-light);
            display: flex;
            gap: 10px;
            margin-bottom: 4px;
        }
        .news-item h3 {
            font-size: .98rem;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .news-item h3 a {
            color: var(--text);
            transition: color var(--transition);
        }
        .news-item h3 a:hover {
            color: var(--primary);
        }
        .news-item .news-excerpt {
            font-size: .85rem;
            color: var(--text-soft);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }
        .news-sidebar {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .news-sidebar h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .news-sidebar h4 i {
            color: var(--primary);
        }
        .sidebar-hot-list {
            list-style: none;
        }
        .sidebar-hot-list li {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
            align-items: baseline;
        }
        .sidebar-hot-list li:last-child {
            border-bottom: none;
        }
        .sidebar-hot-list .rank {
            font-weight: 800;
            font-size: .9rem;
            color: var(--primary);
            width: 22px;
            text-align: center;
            flex-shrink: 0;
        }
        .sidebar-hot-list a {
            font-size: .87rem;
            color: var(--text-soft);
            line-height: 1.5;
            transition: color var(--transition);
        }
        .sidebar-hot-list a:hover {
            color: var(--primary);
        }
        .sidebar-tip {
            margin-top: 18px;
            border-radius: 12px;
            background: var(--accent-light);
            padding: 14px 16px;
            font-size: .82rem;
            color: #0f5555;
            line-height: 1.6;
        }

        /* Services */
        .services-section {
            background: var(--bg);
        }
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .service-card {
            background: var(--surface);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(30, 86, 160, .2);
        }
        .service-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .service-card .card-body {
            padding: 24px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card .card-icon {
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .service-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .service-card p {
            font-size: .87rem;
            color: var(--text-soft);
            line-height: 1.7;
            flex: 1;
        }
        .service-card .card-link {
            margin-top: 14px;
            font-size: .85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .service-card .card-link:hover {
            gap: 10px;
        }

        /* Guarantee Strip */
        .guarantee-strip {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            padding: 40px 0;
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .guarantee-item i {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: var(--accent-light);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .guarantee-item h4 {
            font-size: .92rem;
            font-weight: 700;
            margin-bottom: 2px;
        }
        .guarantee-item p {
            font-size: .78rem;
            color: var(--text-light);
            line-height: 1.4;
        }

        /* Steps */
        .steps-section {
            background: linear-gradient(180deg, var(--bg) 0%, #eef2f7 100%);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--surface);
            border-radius: 20px;
            padding: 32px 26px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 46px;
            height: 46px;
            margin: 0 auto 18px;
            background: var(--primary);
            color: #fff;
            border-radius: 14px;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(30, 86, 160, .3);
        }
        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: .86rem;
            color: var(--text-soft);
            line-height: 1.7;
        }

        /* Focus Topics */
        .topics-section {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .topics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .topic-card {
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            background: var(--surface);
        }
        .topic-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        .topic-card img {
            height: 140px;
            width: 100%;
            object-fit: cover;
        }
        .topic-card .topic-body {
            padding: 20px 18px;
        }
        .topic-card h3 {
            font-size: .96rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .topic-card p {
            font-size: .82rem;
            color: var(--text-soft);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .topic-card .badge {
            display: inline-block;
            font-size: .68rem;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            padding: 4px 10px;
            font-weight: 600;
        }

        /* Testimonials */
        .testimonials-section {
            background: var(--bg);
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .testimonial-card {
            background: var(--surface);
            border-radius: 20px;
            padding: 28px 26px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .testimonial-card .stars {
            color: #f59e0b;
            font-size: .85rem;
            margin-bottom: 14px;
        }
        .testimonial-card blockquote {
            font-size: .88rem;
            color: var(--text-soft);
            line-height: 1.8;
            margin-bottom: 20px;
            font-style: normal;
            border-left: 3px solid var(--primary-light);
            padding-left: 16px;
        }
        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-card .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: .9rem;
        }
        .testimonial-card .author-name {
            font-size: .88rem;
            font-weight: 600;
        }
        .testimonial-card .author-role {
            font-size: .75rem;
            color: var(--text-light);
        }

        /* FAQ */
        .faq-section {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 16px;
            background: var(--surface);
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
            overflow: hidden;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-item .faq-q {
            padding: 20px 22px;
            font-weight: 600;
            font-size: .95rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .faq-item .faq-q i {
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item .faq-a {
            padding: 0 22px 20px;
            font-size: .87rem;
            color: var(--text-soft);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item.active .faq-a {
            display: block;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1e56a0 0%, #163d73 50%, #0d8b8b 100%);
            color: #fff;
            padding: 84px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: 20%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .05);
        }
        .cta-wrap {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: center;
        }
        .cta-wrap h2 {
            font-size: 1.85rem;
            font-weight: 800;
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .cta-wrap p {
            font-size: .96rem;
            color: rgba(255, 255, 255, .8);
            line-height: 1.7;
            max-width: 520px;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn-cta-white {
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            padding: 14px 30px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .95rem;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, .15);
        }
        .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .25);
        }
        .btn-cta-outline {
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, .5);
            color: #fff;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .92rem;
            transition: all var(--transition);
        }
        .btn-cta-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .1);
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 56px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
            font-size: 1.1rem;
        }
        .footer-brand p {
            font-size: .85rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: .9rem;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: .85rem;
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: .78rem;
            color: #64748b;
        }

        /* Mobile nav */
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 12px 20px;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 10px 12px;
            border-radius: 10px;
            font-weight: 500;
            font-size: .92rem;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .news-sidebar {
                order: -1;
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 64px 0;
            }
            .nav-search {
                display: none;
            }
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
                align-items: center;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
            .services-grid,
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .topics-grid,
            .testimonials-grid,
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .tier-list {
                grid-template-columns: 1fr;
            }
            .cta-wrap {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .cta-actions {
                justify-content: center;
            }
            .hero {
                padding: 72px 0 56px;
            }
            .hero h1 {
                font-size: 1.65rem;
            }
            .hero-desc {
                font-size: .92rem;
            }
            .hero-stats {
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: .95rem;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .hero-buttons .btn-primary-hero,
            .hero-buttons .btn-ghost-hero {
                width: 100%;
                justify-content: center;
            }
            .news-item {
                flex-direction: row;
            }
            .news-item img {
                width: 80px;
                height: 60px;
            }
        }

:root {
  --brand-50: #f0f7fc;
  --brand-100: #dcebf7;
  --brand-200: #bcd7f0;
  --brand-300: #8fbce4;
  --brand-400: #5d9bd3;
  --brand-500: #3a7fc0;
  --brand-600: #2c66a3;
  --brand-700: #255385;
  --brand-800: #1e4168;
  --brand-900: #16314f;
  --brand-950: #0e2036;
  --accent-400: #c9a86c;
  --accent-500: #b8905a;
  --accent-600: #a07748;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  --shadow-card: 0 10px 30px rgba(30, 64, 175, 0.08);
  --radius-card: 16px;
}
* { box-sizing: border-box; }
html, body { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-main);
  background: #f8fafc;
  line-height: 1.6;
  margin: 0;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button, input { font-family: inherit; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 80px 0; }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--brand-600); color: #fff; border-radius: 9999px;
  padding: 14px 32px; font-weight: 600; text-decoration: none;
  transition: all 0.3s ease; box-shadow: 0 4px 20px rgba(44, 102, 163, 0.25);
  border: none; cursor: pointer; font-size: 15px;
}
.btn-primary:hover { background: var(--brand-700); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(44, 102, 163, 0.35); }
.btn-primary:focus-visible { outline: 3px solid rgba(58, 127, 192, 0.5); outline-offset: 2px; }
.btn-outline-light {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: transparent; color: #fff; border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 9999px; padding: 12px 28px; font-weight: 600;
  transition: all 0.3s ease; font-size: 15px; cursor: pointer;
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.12); transform: translateY(-2px); border-color: #fff; }
.btn-outline-light:focus-visible { outline: 3px solid rgba(255, 255, 255, 0.4); outline-offset: 2px; }
.card-hover { transition: all 0.35s ease; }
.card-hover:hover { transform: translateY(-6px); box-shadow: 0 20px 40px rgba(30, 64, 175, 0.12); }
.badge-shell {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px; border-radius: 9999px; font-size: 13px; font-weight: 500;
  background: rgba(255, 255, 255, 0.15); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25); backdrop-filter: blur(4px);
}
.hero-background {
  background-image: linear-gradient(135deg, rgba(14, 32, 54, 0.92) 0%, rgba(44, 102, 163, 0.85) 100%),
    url('/assets/images/backpic/back-1.jpg');
  background-size: cover;
  background-position: center;
  color: #fff;
}
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
}
.header-bar { display: flex; align-items: center; gap: 20px; padding: 12px 24px; }
.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 700; color: var(--brand-700);
  white-space: nowrap; text-decoration: none;
}
.logo i { color: var(--brand-600); font-size: 20px; }
.header-search { flex: 1; max-width: 480px; margin: 0 auto; position: relative; }
.header-search input {
  width: 100%; padding: 10px 48px 10px 20px; border-radius: 9999px;
  border: 1.5px solid var(--border-light); background: #f8fafc; font-size: 14px;
  outline: none; transition: all 0.3s ease; color: var(--text-main);
}
.header-search input:focus {
  border-color: var(--brand-500);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(58, 127, 192, 0.12);
}
.header-search input::placeholder { color: #94a3b8; }
.header-search button {
  position: absolute; right: 5px; top: 50%; transform: translateY(-50%);
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--brand-600); color: #fff; border: none;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background 0.3s ease;
}
.header-search button:hover { background: var(--brand-700); }
.nav-links { display: flex; align-items: center; gap: 4px; flex-shrink: 0; }
.nav-links a {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: 9999px;
  font-weight: 500; font-size: 14px; color: var(--text-main);
  text-decoration: none; transition: all 0.25s ease;
}
.nav-links a:hover { background: var(--brand-50); color: var(--brand-600); }
.nav-links a.active { background: var(--brand-600); color: #fff; box-shadow: 0 4px 12px rgba(44, 102, 163, 0.25); }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; padding: 72px 0 84px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255, 255, 255, 0.7); margin-bottom: 24px; }
.breadcrumb a { color: rgba(255, 255, 255, 0.85); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-size: 11px; color: rgba(255, 255, 255, 0.5); }
.stat-card {
  background: #fff; border-radius: var(--radius-card); padding: 32px 24px;
  text-align: center; border: 1px solid var(--border-light);
  box-shadow: var(--shadow-card); transition: all 0.3s ease;
}
.stat-card:hover { box-shadow: 0 16px 36px rgba(30, 64, 175, 0.1); transform: translateY(-4px); }
.stat-number { font-size: 36px; font-weight: 800; color: var(--brand-600); line-height: 1.2; }
.stat-label { margin-top: 6px; color: var(--text-muted); font-size: 14px; }
.step-card { position: relative; text-align: center; padding: 32px 20px; }
.step-number {
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--brand-600); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px; margin: 0 auto 16px;
  box-shadow: 0 4px 12px rgba(44, 102, 163, 0.25);
}
.step-line { position: relative; }
.step-line::before {
  content: ''; position: absolute; left: 50%; top: 56px; width: calc(100% - 56px);
  height: 2px; background: linear-gradient(90deg, var(--brand-200), var(--brand-400));
  transform: translateX(10%);
}
@media (max-width: 768px) { .step-line::before { display: none; } }
.faq-item {
  border: 1px solid var(--border-light); border-radius: 12px;
  padding: 20px 24px; background: #fff;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-item:hover { box-shadow: var(--shadow-card); }
.faq-question { display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 600; color: var(--text-main); gap: 16px; }
.faq-question i { transition: transform 0.3s ease; color: var(--brand-500); flex-shrink: 0; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; color: var(--text-muted); line-height: 1.75; }
.faq-item.active { border-color: var(--brand-300); }
.faq-item.active .faq-answer { max-height: 320px; padding-top: 12px; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.site-footer { background: #0f172a; color: #94a3b8; padding: 60px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-brand .logo { color: #fff; font-size: 20px; margin-bottom: 16px; }
.footer-brand p { line-height: 1.8; margin: 0; max-width: 380px; }
.footer-col h4 { color: #e2e8f0; font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: #94a3b8; text-decoration: none; transition: color 0.25s ease; display: inline-flex; align-items: center; gap: 8px; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 20px 0; font-size: 13px; color: #64748b; flex-wrap: wrap; gap: 8px; }
@media (max-width: 1024px) {
  .hero-grid { gap: 32px; }
}
@media (max-width: 768px) {
  .section-padding { padding: 56px 0; }
  .header-bar { flex-wrap: wrap; gap: 12px; padding: 12px 16px; }
  .header-search { order: 3; flex-basis: 100%; max-width: 100%; }
  .nav-links { margin-left: auto; }
  .nav-links a { padding: 7px 12px; font-size: 13px; }
  .hero-grid { grid-template-columns: 1fr; padding: 44px 0 56px; }
  .logo { font-size: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stat-number { font-size: 28px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-bar { padding: 10px 12px; }
  .nav-links { gap: 2px; }
  .nav-links a i { display: none; }
  .nav-links a { padding: 7px 12px; }
  .hero-grid { padding: 32px 0 44px; }
}

:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #d97706;
            --ink: #1e293b;
            --text: #334155;
            --muted: #64748b;
            --line: #e2e8f0;
            --soft: #f8fafc;
            --white: #ffffff;
            --radius: 1rem;
            --radius-sm: .75rem;
            --shadow-card: 0 10px 30px -5px rgba(15, 23, 42, 0.08), 0 4px 10px -2px rgba(15, 23, 42, 0.04);
            --shadow-hover: 0 20px 40px -8px rgba(37, 99, 235, 0.18), 0 8px 20px -6px rgba(15, 23, 42, 0.06);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--soft);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all .2s ease;
        }

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

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

        input,
        textarea {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== Header ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            width: 100%;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid var(--line);
            backdrop-filter: blur(14px);
            box-shadow: 0 1px 6px rgba(15, 23, 42, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            height: 74px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: .6rem;
            font-weight: 800;
            font-size: 1.08rem;
            letter-spacing: -0.02em;
            color: var(--ink);
            flex-shrink: 0;
            white-space: nowrap;
        }

        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #2563eb, #1e40af);
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.28);
        }

        .header-search {
            flex: 1;
            display: flex;
            justify-content: center;
            max-width: 480px;
            margin: 0 auto;
        }

        .search-box {
            position: relative;
            width: 100%;
        }

        .header-search input {
            width: 100%;
            height: 44px;
            border-radius: 999px;
            border: 1px solid var(--line);
            background: #f1f5f9;
            padding: 0 4.8rem 0 2.8rem;
            font-size: .875rem;
            color: var(--ink);
            transition: all .25s ease;
        }

        .header-search input::placeholder {
            color: #94a3b8;
        }

        .header-search input:focus {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
        }

        .search-icon {
            position: absolute;
            left: 1.05rem;
            top: 50%;
            transform: translateY(-50%);
            color: #94a3b8;
            font-size: .8rem;
            pointer-events: none;
        }

        .search-btn {
            position: absolute;
            right: 4px;
            top: 50%;
            transform: translateY(-50%);
            height: 36px;
            padding: 0 1.1rem;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-size: .8rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: .4rem;
            transition: background .2s ease;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: .3rem;
            flex-shrink: 0;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            padding: .5rem 1rem;
            border-radius: 999px;
            font-size: .875rem;
            font-weight: 600;
            color: var(--text);
            transition: all .2s ease;
            white-space: nowrap;
        }

        .nav-links a:hover {
            background: #eff6ff;
            color: var(--primary);
        }

        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 10px rgba(37, 99, 235, 0.22);
        }

        .nav-links a.active i {
            color: #fff;
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            height: 40px;
            padding: 0 1.25rem;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-size: .875rem;
            font-weight: 600;
            flex-shrink: 0;
            transition: background .2s ease;
        }

        .header-cta:hover {
            background: var(--primary-dark);
        }

        .mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--line);
            background: #fff;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--ink);
        }

        .mobile-menu {
            display: none;
            padding: 1rem 1.25rem 1.5rem;
            border-top: 1px solid var(--line);
            background: #fff;
        }

        .mobile-menu .nav-links {
            flex-direction: column;
            align-items: stretch;
            gap: .4rem;
            margin-top: .4rem;
        }

        .mobile-menu .nav-links a {
            border-radius: 12px;
            padding: .75rem 1rem;
            justify-content: flex-start;
        }

        .mobile-menu .mobile-search {
            position: relative;
            margin-bottom: .75rem;
        }

        .mobile-menu .mobile-search input {
            width: 100%;
            height: 44px;
            border-radius: 999px;
            border: 1px solid var(--line);
            background: #f1f5f9;
            padding: 0 1.2rem 0 2.7rem;
            font-size: .875rem;
        }

        .mobile-menu .mobile-search .search-icon {
            left: 1rem;
        }

        .mobile-toggle.collapsed {
            color: var(--primary);
            border-color: var(--primary);
        }

        /* ========== Hero ========== */
        .hero-section {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 55%, #dbeafe 100%);
            padding: 5.5rem 0 4.5rem;
        }

        .hero-bg-img {
            position: absolute;
            top: 0;
            right: 0;
            width: 58%;
            height: 100%;
            object-fit: cover;
            opacity: .24;
            border-radius: 0 0 0 3rem;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(248, 250, 252, 0.98) 20%, rgba(248, 250, 252, 0.78) 50%, rgba(219, 234, 254, 0.35) 100%);
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 3.5rem;
            align-items: center;
        }

        .hero-left {
            max-width: 600px;
        }

        .badge-hero {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: rgba(37, 99, 235, 0.08);
            border: 1px solid rgba(37, 99, 235, 0.2);
            color: var(--primary-dark);
            font-size: .8rem;
            font-weight: 600;
            padding: .4rem 1rem;
            border-radius: 999px;
            margin-bottom: 1.2rem;
        }

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

        .hero-left h1 {
            font-size: clamp(2rem, 3.6vw, 2.8rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--ink);
            margin-bottom: 1rem;
        }

        .hero-sub {
            font-size: 1rem;
            line-height: 1.8;
            color: var(--muted);
            margin-bottom: 1.6rem;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: .6rem;
            margin-bottom: 1.2rem;
        }

        .hero-badges span {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: .45rem .85rem;
            font-size: .78rem;
            font-weight: 600;
            color: var(--text);
            box-shadow: 0 2px 6px rgba(15, 23, 42, 0.04);
        }

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

        .hero-qualification {
            display: flex;
            align-items: center;
            gap: .45rem;
            font-size: .85rem;
            color: var(--muted);
            margin-bottom: 1.6rem;
        }

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

        .hero-ctas {
            display: flex;
            flex-wrap: wrap;
            gap: .8rem;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: .55rem;
            padding: .8rem 1.6rem;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-size: .9rem;
            font-weight: 600;
            box-shadow: 0 6px 18px rgba(37, 99, 235, 0.28);
            transition: all .25s ease;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(37, 99, 235, 0.35);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: .55rem;
            padding: .8rem 1.5rem;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--line);
            color: var(--ink);
            font-size: .9rem;
            font-weight: 600;
            transition: all .25s ease;
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #eff6ff;
        }

        .hero-card {
            background: rgba(255, 255, 255, 0.94);
            border: 1px solid rgba(226, 232, 240, 0.9);
            border-radius: 1.5rem;
            padding: 1.8rem 1.6rem;
            box-shadow: 0 24px 60px rgba(15, 23, 42, 0.1);
            backdrop-filter: blur(8px);
        }

        .hero-card h3 {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: 1rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: .6rem;
        }

        .hero-card h3 i {
            color: var(--primary);
        }

        .benefit-list {
            list-style: none;
            margin-bottom: 1rem;
        }

        .benefit-list li {
            position: relative;
            padding-left: 1.5rem;
            font-size: .875rem;
            color: var(--text);
            margin-bottom: .45rem;
        }

        .benefit-list li::before {
            content: '\f058';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary);
            font-size: .85rem;
        }

        .divider {
            height: 1px;
            background: var(--line);
            margin: 1rem 0;
        }

        .qualify-list {
            list-style: none;
        }

        .qualify-list li {
            display: flex;
            align-items: flex-start;
            gap: .6rem;
            font-size: .8rem;
            color: var(--muted);
            margin-bottom: .55rem;
            line-height: 1.5;
        }

        .qualify-list li i {
            color: var(--accent);
            margin-top: .15rem;
            font-size: .8rem;
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }

        .hero-card-cta {
            margin-top: 1.2rem;
        }

        .btn-sm {
            padding: .55rem 1.1rem;
            font-size: .8rem;
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 4.5rem 0;
        }

        .section-head {
            max-width: 640px;
            margin-bottom: 2.8rem;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .overline {
            display: inline-block;
            font-size: .75rem;
            font-weight: 700;
            letter-spacing: .12em;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(37, 99, 235, 0.08);
            padding: .3rem .8rem;
            border-radius: 999px;
            margin-bottom: .8rem;
        }

        .section-head h2 {
            font-size: clamp(1.6rem, 2.4vw, 2.1rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--ink);
            margin-bottom: .6rem;
            letter-spacing: -0.02em;
        }

        .section-head p {
            font-size: .95rem;
            color: var(--muted);
            line-height: 1.7;
        }

        /* ========== 价值主张 ========== */
        .value-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 1.6rem 1.4rem;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            height: 100%;
        }

        .value-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.15);
        }

        .value-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: var(--primary);
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }

        .value-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: .45rem;
        }

        .value-card p {
            font-size: .85rem;
            color: var(--muted);
            line-height: 1.7;
        }

        /* ========== 功能分组 ========== */
        .experience-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1.25rem;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .experience-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .experience-card .exp-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .experience-card .exp-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .experience-card:hover .exp-img img {
            transform: scale(1.05);
        }

        .experience-card .exp-body {
            padding: 1.4rem 1.3rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .experience-card .exp-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: .4rem;
        }

        .experience-card .exp-body p {
            font-size: .85rem;
            color: var(--muted);
            line-height: 1.7;
            flex: 1;
        }

        .exp-tag {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            font-size: .72rem;
            font-weight: 600;
            color: var(--accent);
            background: #fffbeb;
            border-radius: 999px;
            padding: .25rem .65rem;
            margin-bottom: .6rem;
            align-self: flex-start;
        }

        /* ========== 使用场景 ========== */
        .scenario-section {
            background: #fff;
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .scenario-item {
            display: flex;
            gap: 1rem;
            padding: 1rem 0;
            border-bottom: 1px dashed var(--line);
        }

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

        .scenario-icon {
            width: 44px;
            height: 44px;
            flex-shrink: 0;
            border-radius: 12px;
            background: #eff6ff;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
        }

        .scenario-item h4 {
            font-size: .95rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: .15rem;
        }

        .scenario-item p {
            font-size: .83rem;
            color: var(--muted);
        }

        .scenario-img {
            border-radius: 1.25rem;
            overflow: hidden;
            position: relative;
            height: 100%;
            min-height: 260px;
            box-shadow: var(--shadow-card);
        }

        .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .scenario-stat {
            position: absolute;
            left: 1rem;
            bottom: 1rem;
            background: rgba(255, 255, 255, 0.92);
            border-radius: 1rem;
            padding: .75rem 1rem;
            backdrop-filter: blur(6px);
            box-shadow: 0 8px 20px rgba(15, 23, 42, 0.1);
        }

        .scenario-stat .num {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .scenario-stat .label {
            font-size: .72rem;
            color: var(--muted);
            font-weight: 600;
        }

        /* ========== 案例/茶友分享 ========== */
        .story-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1.25rem;
            padding: 1.6rem;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .story-card .stars {
            color: #f59e0b;
            font-size: .75rem;
            letter-spacing: .15em;
            margin-bottom: .7rem;
        }

        .story-card blockquote {
            font-size: .88rem;
            color: var(--text);
            line-height: 1.75;
            flex: 1;
        }

        .story-user {
            display: flex;
            align-items: center;
            gap: .6rem;
            margin-top: 1.2rem;
            padding-top: 1rem;
            border-top: 1px solid var(--line);
        }

        .story-avatar {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, #dbeafe, #bae6fd);
            color: var(--primary);
            font-size: .8rem;
            font-weight: 700;
        }

        .story-user .name {
            font-size: .83rem;
            font-weight: 700;
            color: var(--ink);
        }

        .story-user .role {
            font-size: .72rem;
            color: var(--muted);
        }

        /* ========== 方案 ========== */
        .plan-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1.25rem;
            padding: 1.8rem 1.5rem;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .plan-card.featured {
            border: 2px solid var(--primary);
            box-shadow: 0 20px 45px -10px rgba(37, 99, 235, 0.2);
        }

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

        .plan-tag {
            position: absolute;
            top: 0;
            right: 1.5rem;
            transform: translateY(-50%);
            background: var(--primary);
            color: #fff;
            font-size: .7rem;
            font-weight: 700;
            padding: .25rem .7rem;
            border-radius: 999px;
            letter-spacing: .05em;
        }

        .plan-card h3 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--ink);
            margin-bottom: .2rem;
        }

        .plan-desc {
            font-size: .8rem;
            color: var(--muted);
            margin-bottom: 1rem;
        }

        .plan-price {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: .4rem;
        }

        .plan-price span {
            font-size: .75rem;
            font-weight: 500;
            color: var(--muted);
            margin-left: .2rem;
        }

        .plan-feats {
            list-style: none;
            margin-bottom: 1.4rem;
            flex: 1;
        }

        .plan-feats li {
            display: flex;
            align-items: flex-start;
            gap: .5rem;
            font-size: .82rem;
            color: var(--text);
            margin-bottom: .45rem;
        }

        .plan-feats li i {
            color: var(--primary);
            font-size: .75rem;
            margin-top: .2rem;
            width: 16px;
            text-align: center;
            flex-shrink: 0;
        }

        .plan-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            border-radius: 999px;
            padding: .65rem 1.2rem;
            font-size: .85rem;
            font-weight: 600;
            border: 1px solid var(--line);
            color: var(--ink);
            background: #fff;
            transition: all .25s ease;
        }

        .plan-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #eff6ff;
        }

        .plan-card.featured .plan-btn {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
        }

        .plan-card.featured .plan-btn:hover {
            background: var(--primary-dark);
        }

        /* ========== FAQ ========== */
        .faq-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1rem;
            margin-bottom: .7rem;
            overflow: hidden;
            transition: all .25s ease;
        }

        .faq-card:hover {
            border-color: rgba(37, 99, 235, 0.25);
        }

        .faq-toggle {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 1.1rem 1.3rem;
            text-align: left;
            font-size: .92rem;
            font-weight: 600;
            color: var(--ink);
            background: transparent;
        }

        .faq-toggle .faq-icon {
            color: var(--primary);
            font-size: .85rem;
            transition: transform .25s ease;
            flex-shrink: 0;
        }

        .faq-card.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

        .faq-answer p {
            padding: 0 1.3rem 1.1rem;
            font-size: .85rem;
            color: var(--muted);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            overflow: hidden;
            padding: 4.5rem 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(29, 78, 216, 0.88);
        }

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

        .cta-section h2 {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: .6rem;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.9);
            font-size: .95rem;
            max-width: 560px;
            margin: 0 auto 1.8rem;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: .8rem;
            justify-content: center;
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: .55rem;
            padding: .8rem 1.8rem;
            border-radius: 999px;
            background: #fff;
            color: var(--primary);
            font-size: .9rem;
            font-weight: 700;
            box-shadow: 0 8px 20px rgba(15, 23, 42, 0.15);
            transition: all .25s ease;
        }

        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(15, 23, 42, 0.2);
            background: #eff6ff;
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: .55rem;
            padding: .8rem 1.8rem;
            border-radius: 999px;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            font-size: .9rem;
            font-weight: 600;
            transition: all .25s ease;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        .cta-contact {
            margin-top: 1.6rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.5rem;
            color: rgba(255, 255, 255, 0.85);
            font-size: .82rem;
        }

        .cta-contact span {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }

        .cta-contact i {
            color: #fcd34d;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: .8rem;
            font-size: 1.05rem;
        }

        .footer-brand .logo .logo-icon {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
        }

        .footer-brand p {
            font-size: .83rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col h4 {
            color: #fff;
            font-size: .9rem;
            font-weight: 700;
            margin-bottom: 1rem;
            letter-spacing: .02em;
        }

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

        .footer-col ul li {
            margin-bottom: .5rem;
        }

        .footer-col ul a {
            font-size: .83rem;
            color: rgba(255, 255, 255, 0.6);
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            transition: color .2s ease;
        }

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

        .footer-col ul a i {
            font-size: .72rem;
            color: var(--primary-light);
            width: 16px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .6rem;
            padding: 1.2rem 0;
            font-size: .78rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .header-search {
                max-width: 320px;
            }

            .nav-links a {
                padding: .45rem .7rem;
                font-size: .85rem;
            }

            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 768px) {
            .header-search {
                display: none;
            }

            .nav-links.desktop-nav {
                display: none;
            }

            .header-cta.desktop-cta {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

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

            .hero-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .hero-bg-img {
                width: 100%;
                opacity: .15;
            }

            .hero-left h1 {
                font-size: 1.7rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }

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

            .section {
                padding: 3.2rem 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }

            .header-inner {
                height: 64px;
                gap: .5rem;
            }

            .logo {
                font-size: .9rem;
            }

            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: .85rem;
            }

            .hero-ctas .btn-primary,
            .hero-ctas .btn-ghost {
                width: 100%;
                justify-content: center;
            }

            .hero-badges span {
                font-size: .7rem;
                padding: .35rem .65rem;
            }

            .value-card {
                padding: 1.2rem;
            }

            .cta-actions .btn-white,
            .cta-actions .btn-outline-light {
                width: 100%;
                justify-content: center;
            }

            .cta-contact {
                flex-direction: column;
                gap: .6rem;
                align-items: center;
            }
        }