/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --bg-deep: #0B0F14;
            --bg-panel: #141A22;
            --surface: #1C2530;
            --surface-hover: #232F3D;
            --line: rgba(255, 255, 255, 0.08);
            --line-strong: rgba(255, 255, 255, 0.14);
            --primary: #12B98E;
            --primary-strong: #0FA37A;
            --accent: #F59E2E;
            --text-hi: #F4F7FA;
            --text-mid: #B7C4CF;
            --text-low: #7C8A99;
            --ink-on-primary: #06251C;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 10px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.4);
            --space-section: clamp(72px, 10vw, 120px);
            --font-cn: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-cn);
            background: var(--bg-deep);
            color: var(--text-hi);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }
        a {
            color: var(--text-mid);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        button {
            font-family: var(--font-cn);
        }
        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-cn);
            font-weight: 700;
            color: var(--text-hi);
            line-height: 1.3;
            margin: 0;
        }
        p {
            margin: 0;
        }
        .container {
            max-width: 1240px;
            padding-left: 20px;
            padding-right: 20px;
        }
        .font-num {
            font-variant-numeric: tabular-nums;
            font-feature-settings: "tnum";
        }

        /* ========== 按钮 ========== */
        .btn {
            font-weight: 600;
            border-radius: var(--radius-sm);
            font-size: 15px;
            padding: 13px 30px;
            transition: all .25s ease;
            min-height: 52px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
            line-height: 1.4;
            letter-spacing: .01em;
        }
        .btn-primary {
            background: var(--primary);
            color: var(--ink-on-primary);
            border-radius: var(--radius-sm);
        }
        .btn-primary:hover {
            background: var(--accent);
            color: #1a1206;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary-strong);
            outline-offset: 3px;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid var(--line-strong);
            color: var(--text-hi);
        }
        .btn-outline-light:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline-light:focus-visible {
            outline: 2px solid var(--primary-strong);
            outline-offset: 3px;
        }
        .btn-outline-light:active {
            transform: scale(0.98);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 16px;
        }
        .btn-sm {
            padding: 8px 18px;
            min-height: 40px;
            font-size: 14px;
        }

        /* ========== 徽章 / 标签 ========== */
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(18, 185, 142, .12);
            color: var(--primary);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }
        .badge-tag::before {
            content: '';
            width: 4px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            flex-shrink: 0;
        }
        .eyebrow-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(18, 185, 142, .1);
            border: 1px solid rgba(18, 185, 142, .25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            padding: 6px 16px;
            letter-spacing: .03em;
        }
        .eyebrow-tag i {
            font-size: 14px;
        }

        /* ========== Header ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            transition: background .35s ease, box-shadow .35s ease, border-color .35s ease;
            border-bottom: 1px solid transparent;
        }
        .site-header.is-scrolled {
            background: rgba(11, 15, 20, .94);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom-color: var(--line);
            box-shadow: 0 6px 24px rgba(0, 0, 0, .3);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .brand-logo {
            display: flex;
            flex-direction: column;
            line-height: 1.25;
            text-decoration: none;
        }
        .brand-main {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-hi);
            letter-spacing: .02em;
            transition: color .25s;
        }
        .brand-main:hover {
            color: var(--primary);
        }
        .brand-sub {
            font-size: 11px;
            color: var(--text-low);
            letter-spacing: .08em;
            font-weight: 400;
            margin-top: 2px;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            color: var(--text-mid);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 6px;
            transition: color .25s, background .25s;
            text-decoration: none;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: rgba(18, 185, 142, .08);
        }
        .main-nav a.active {
            color: var(--primary);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-toggle {
            background: rgba(255, 255, 255, .06);
            border: 1px solid var(--line);
            border-radius: 6px;
            width: 42px;
            height: 42px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-mid);
            cursor: pointer;
            transition: all .25s;
        }
        .search-toggle:hover {
            color: var(--primary);
            border-color: rgba(18, 185, 142, .4);
            background: rgba(18, 185, 142, .08);
        }
        .navbar-toggler-custom {
            display: none;
            background: rgba(255, 255, 255, .06);
            border: 1px solid var(--line);
            border-radius: 6px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            color: var(--text-hi);
            cursor: pointer;
            font-size: 18px;
            transition: all .25s;
        }
        .navbar-toggler-custom:hover {
            color: var(--primary);
            border-color: rgba(18, 185, 142, .4);
        }
        .mobile-menu {
            background: var(--bg-deep);
            border-top: 1px solid var(--line);
            padding: 12px 20px 24px;
            display: none;
        }
        .mobile-menu.show {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 8px;
            color: var(--text-mid);
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid var(--line);
            text-decoration: none;
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        .mobile-menu .btn {
            margin-top: 16px;
        }

        /* ========== Hero ========== */
        .hero-section {
            min-height: 720px;
            padding: 0;
            display: flex;
            align-items: center;
            position: relative;
            background: var(--bg-deep);
            overflow: hidden;
            padding-top: 72px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            right: -10%;
            top: 20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(18, 185, 142, .08) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-main-row {
            align-items: center;
            min-height: 640px;
            position: relative;
            z-index: 2;
        }
        .hero-copy {
            padding-right: 32px;
        }
        .hero-eyebrow {
            margin-bottom: 20px;
        }
        .hero-copy h1 {
            font-size: clamp(38px, 4.8vw, 56px);
            font-weight: 800;
            line-height: 1.18;
            margin-bottom: 20px;
            letter-spacing: -.01em;
        }
        .hero-copy h1 .hl {
            color: var(--primary);
        }
        .hero-lead {
            font-size: 17px;
            color: var(--text-mid);
            line-height: 1.9;
            max-width: 520px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-stats {
            display: flex;
            gap: 40px;
            border-top: 1px solid var(--line);
            padding-top: 24px;
            max-width: 500px;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }
        .hero-stat .label {
            font-size: 13px;
            color: var(--text-low);
            margin-top: 4px;
            letter-spacing: .04em;
        }
        .hero-visual-col {
            position: relative;
        }
        .hero-visual {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: 0 24px 60px rgba(0, 0, 0, .45);
        }
        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 15, 20, .45) 100%);
            pointer-events: none;
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            min-height: 460px;
            object-fit: cover;
            display: block;
            filter: saturate(.85) contrast(1.05);
        }
        .hero-badge {
            position: absolute;
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(20, 26, 34, .88);
            backdrop-filter: blur(6px);
            border-radius: 10px;
            padding: 12px 20px;
            border: 1px solid var(--line);
            z-index: 3;
            box-shadow: var(--shadow-sm);
        }
        .hero-badge-tl {
            top: 20px;
            left: 20px;
        }
        .hero-badge-bl {
            bottom: 20px;
            right: 20px;
        }
        .hero-badge .badge-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(18, 185, 142, .15);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .hero-badge strong {
            font-size: 20px;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            display: block;
            line-height: 1.2;
            color: var(--text-hi);
        }
        .hero-badge small {
            font-size: 12px;
            color: var(--text-low);
            display: block;
            line-height: 1.3;
        }

        /* ========== 指标看板 ========== */
        .metrics-section {
            padding-bottom: 0;
            position: relative;
            z-index: 5;
        }
        .metrics-panel {
            background: var(--bg-panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: clamp(28px, 4vw, 44px);
            margin-top: -70px;
            box-shadow: var(--shadow-sm);
            position: relative;
            z-index: 5;
        }
        .metric-card {
            text-align: center;
            padding: 20px 12px;
            border-right: 1px solid var(--line);
            position: relative;
        }
        .metric-card:last-child {
            border-right: none;
        }
        .metric-ring {
            width: 88px;
            height: 88px;
            margin: 0 auto 14px;
            position: relative;
        }
        .metric-ring svg {
            width: 100%;
            height: 100%;
            transform: rotate(-90deg);
        }
        .metric-ring .ring-bg {
            fill: none;
            stroke: rgba(255, 255, 255, .08);
            stroke-width: 3;
        }
        .metric-ring .ring-fg {
            fill: none;
            stroke: var(--primary);
            stroke-width: 3;
            stroke-linecap: round;
            transition: stroke-dasharray .6s ease;
        }
        .metric-ring .ring-fg.accent-ring {
            stroke: var(--accent);
        }
        .metric-ring .ring-value {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            color: var(--text-hi);
        }
        .metric-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            margin-top: 8px;
        }
        .metric-sub {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 12px;
            color: var(--text-low);
            margin-top: 6px;
        }
        .metric-sub .metric-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
            display: inline-block;
        }
        .metric-sub .metric-dot.accent-dot {
            background: var(--accent);
        }
        .metric-sub .up {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== 服务矩阵 ========== */
        .services-section {
            padding: var(--space-section) 0;
            background: var(--bg-deep);
            position: relative;
        }
        .services-section .section-header {
            margin-bottom: 48px;
            text-align: center;
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-header .eyebrow-tag {
            margin-bottom: 16px;
        }
        .section-header h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-mid);
            font-size: 16px;
            line-height: 1.8;
        }
        .service-matrix {
            display: flex;
            gap: 0;
            background: var(--bg-panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            min-height: 520px;
        }
        .service-index {
            width: 33%;
            min-width: 260px;
            border-right: 1px solid var(--line);
            padding: 24px 0;
            background: rgba(0, 0, 0, .15);
        }
        .service-nav {
            display: flex;
            align-items: center;
            gap: 16px;
            width: 100%;
            text-align: left;
            padding: 18px 28px;
            background: transparent;
            border: none;
            border-left: 3px solid transparent;
            cursor: pointer;
            transition: background .25s, border-color .25s;
        }
        .service-nav:hover {
            background: rgba(18, 185, 142, .05);
        }
        .service-nav.active {
            background: rgba(18, 185, 142, .08);
            border-left-color: var(--primary);
        }
        .service-nav .svc-num {
            font-size: 22px;
            font-weight: 800;
            font-variant-numeric: tabular-nums;
            color: var(--text-low);
            min-width: 40px;
            transition: color .25s;
        }
        .service-nav.active .svc-num {
            color: var(--primary);
        }
        .service-nav .svc-name {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-mid);
            transition: color .25s;
            line-height: 1.3;
        }
        .service-nav.active .svc-name {
            color: var(--text-hi);
        }
        .service-nav .svc-brief {
            font-size: 13px;
            color: var(--text-low);
            display: block;
            margin-top: 2px;
        }
        .service-detail {
            flex: 1;
            padding: 40px;
            display: flex;
            align-items: stretch;
        }
        .service-detail-item {
            display: none;
            width: 100%;
            animation: fadeSlideIn .3s ease;
        }
        .service-detail-item.active {
            display: block;
        }
        @keyframes fadeSlideIn {
            from {
                opacity: 0;
                transform: translateY(8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .service-detail-inner {
            display: flex;
            gap: 36px;
            height: 100%;
        }
        .service-detail-copy {
            flex: 1;
        }
        .service-detail-copy h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .service-detail-copy .svc-desc-line {
            color: var(--text-mid);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .svc-info-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: 12px;
            margin-bottom: 24px;
        }
        .svc-info-list li {
            background: var(--surface);
            border-radius: 8px;
            padding: 14px 16px;
            border: 1px solid var(--line);
        }
        .svc-info-list li .info-label {
            font-size: 12px;
            color: var(--text-low);
            display: block;
            margin-bottom: 4px;
            letter-spacing: .03em;
        }
        .svc-info-list li .info-value {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            line-height: 1.4;
        }
        .svc-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .service-detail-media {
            flex: 0 0 260px;
            max-width: 280px;
            position: relative;
            overflow: hidden;
            border-radius: 10px;
        }
        .service-detail-media img {
            width: 100%;
            height: 100%;
            min-height: 260px;
            object-fit: cover;
            display: block;
            filter: saturate(.85) contrast(1.05);
        }
        .service-detail-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(11, 15, 20, .5) 100%);
        }

        /* ========== 结果对比 ========== */
        .compare-section {
            padding: var(--space-section) 0;
            background: var(--bg-panel);
            position: relative;
        }
        .compare-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255, 255, 255, .008) 10px, rgba(255, 255, 255, .008) 11px);
            pointer-events: none;
        }
        .compare-wrap {
            max-width: 1080px;
            margin: 0 auto;
            position: relative;
        }
        .compare-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .compare-title h2 {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .compare-title p {
            color: var(--text-mid);
            font-size: 16px;
            max-width: 640px;
            margin: 0 auto;
        }
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-bottom: 36px;
            position: relative;
        }
        .compare-column {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 36px;
            border: 1px solid var(--line);
            position: relative;
        }
        .compare-column h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .compare-column.weak-side {
            opacity: .75;
            filter: saturate(.4);
        }
        .compare-column.weak-side h3 {
            color: var(--text-low);
        }
        .compare-column.strong-side {
            border-color: rgba(18, 185, 142, .4);
            box-shadow: 0 0 40px rgba(18, 185, 142, .06);
        }
        .compare-column.strong-side::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: 24px;
            background: var(--primary);
            color: var(--ink-on-primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
            letter-spacing: .06em;
        }
        .compare-rows {
            margin-top: 0;
        }
        .compare-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 0;
            border-bottom: 1px solid var(--line);
            font-size: 14px;
            gap: 16px;
        }
        .compare-row:last-child {
            border-bottom: none;
        }
        .compare-row .row-label {
            color: var(--text-low);
            flex-shrink: 0;
            min-width: 64px;
        }
        .compare-row .row-value {
            display: flex;
            align-items: center;
            gap: 8px;
            text-align: right;
            color: var(--text-low);
        }
        .compare-row .row-value.winner {
            color: var(--text-hi);
            font-weight: 500;
        }
        .compare-row .row-value .checked-icon {
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }
        .vs-badge-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--bg-deep);
            border: 2px solid var(--line-strong);
            border-radius: 50%;
            width: 64px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            color: var(--accent);
            z-index: 2;
            box-shadow: var(--shadow-sm);
            letter-spacing: .03em;
        }
        .compare-conclusion {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            background: var(--bg-deep);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 24px 32px;
            flex-wrap: wrap;
        }
        .compare-conclusion p {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
            flex: 1;
            min-width: 260px;
        }
        .compare-conclusion p strong {
            color: var(--text-hi);
        }
        .compare-conclusion .btn {
            flex-shrink: 0;
        }

        /* ========== 口碑区 ========== */
        .testimonials-section {
            padding: var(--space-section) 0;
            background: var(--bg-deep);
        }
        .testimonial-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .testimonial-head h2 {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 700;
        }
        .testimonial-head p {
            color: var(--text-mid);
            font-size: 16px;
            margin-top: 10px;
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .testimonial-card {
            background: var(--bg-panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all .3s ease;
        }
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(18, 185, 142, .25);
        }
        .testimonial-card .quote-icon {
            color: var(--primary);
            font-size: 28px;
            opacity: .6;
            margin-bottom: 12px;
        }
        .testimonial-card p {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 20px;
        }
        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-user .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--surface-hover);
            border: 1px solid var(--line-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
        }
        .testimonial-user .user-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-hi);
        }
        .testimonial-user .user-meta {
            font-size: 12px;
            color: var(--text-low);
        }

        /* ========== 资讯区 ========== */
        .insights-section {
            padding: var(--space-section) 0;
            background: var(--bg-panel);
        }
        .insights-wrap {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
        }
        .insights-head h2 {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 700;
            margin-bottom: 10px;
        }
        .insights-head p {
            color: var(--text-mid);
            font-size: 16px;
            margin-bottom: 36px;
        }
        .insights-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .insights-list li {
            border-bottom: 1px solid var(--line);
            transition: background .25s, padding-left .25s;
            border-radius: 4px;
        }
        .insights-list li:hover {
            background: rgba(18, 185, 142, .04);
            padding-left: 8px;
        }
        .insights-list a {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 12px;
            color: var(--text-mid);
            text-decoration: none;
            transition: color .25s;
        }
        .insights-list a:hover {
            color: var(--primary);
        }
        .insights-list .insight-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: var(--surface);
            border: 1px solid var(--line);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 16px;
            flex-shrink: 0;
        }
        .insights-list .insight-text {
            flex: 1;
        }
        .insights-list .insight-title {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-hi);
            line-height: 1.5;
            transition: color .25s;
        }
        .insights-list a:hover .insight-title {
            color: var(--primary);
        }
        .insights-list .insight-meta {
            font-size: 13px;
            color: var(--text-low);
            margin-top: 2px;
        }
        .insights-sidebar .sidebar-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px;
            margin-bottom: 24px;
        }
        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-hi);
        }
        .sidebar-card .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-card .tag-cloud .badge-tag {
            cursor: default;
        }
        .sidebar-card .feature-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px;
            background: var(--bg-panel);
            border-radius: 8px;
            border: 1px solid var(--line);
            margin-bottom: 10px;
            transition: border-color .25s, transform .25s;
            text-decoration: none;
        }
        .sidebar-card .feature-link:hover {
            border-color: rgba(18, 185, 142, .3);
            transform: translateY(-2px);
        }
        .sidebar-card .feature-link img {
            width: 56px;
            height: 56px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .sidebar-card .feature-link span {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-hi);
            line-height: 1.4;
        }
        .sidebar-card .feature-link small {
            display: block;
            font-size: 12px;
            color: var(--text-low);
            margin-top: 4px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--bg-deep);
        }
        .faq-wrap {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .faq-head h2 {
            font-size: clamp(28px, 4vw, 36px);
            font-weight: 700;
            margin-bottom: 8px;
        }
        .faq-head p {
            color: var(--text-mid);
            font-size: 16px;
        }
        .accordion {
            --bs-accordion-bg: var(--bg-panel);
            --bs-accordion-color: var(--text-mid);
            --bs-accordion-border-color: var(--line);
            --bs-accordion-border-radius: 10px;
            --bs-accordion-btn-color: var(--text-hi);
            --bs-accordion-btn-bg: var(--bg-panel);
            --bs-accordion-active-bg: var(--bg-panel);
            --bs-accordion-active-color: var(--primary);
            --bs-accordion-btn-icon: none;
            --bs-accordion-btn-active-icon: none;
        }
        .accordion-item {
            background: var(--bg-panel);
            border: 1px solid var(--line) !important;
            border-radius: 10px !important;
            margin-bottom: 16px;
            overflow: hidden;
        }
        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            padding: 22px 56px 22px 28px;
            background: var(--bg-panel);
            color: var(--text-hi);
            box-shadow: none;
            border-radius: 10px !important;
            position: relative;
            line-height: 1.5;
        }
        .accordion-button::after {
            content: '+';
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 26px;
            font-weight: 400;
            color: var(--primary);
            background: none;
            width: auto;
            height: auto;
            line-height: 1;
            transition: transform .3s ease;
        }
        .accordion-button:not(.collapsed)::after {
            transform: translateY(-50%) rotate(45deg);
            color: var(--accent);
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .accordion-button:not(.collapsed) {
            background: var(--bg-panel);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-body {
            padding: 0 28px 24px;
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid var(--line);
        }
        .accordion-body .body-inner {
            padding-top: 20px;
        }

        /* ========== 转化表单 ========== */
        .contact-section {
            padding: var(--space-section) 0;
            background: var(--bg-panel);
            position: relative;
        }
        .contact-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            background: var(--bg-deep);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: clamp(32px, 5vw, 60px);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .contact-wrap::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(18, 185, 142, .06) 0%, transparent 70%);
            pointer-events: none;
        }
        .contact-info h2 {
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            margin-bottom: 14px;
        }
        .contact-info .contact-desc {
            color: var(--text-mid);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .contact-promise {
            list-style: none;
            padding: 0;
            margin: 0 0 32px;
        }
        .contact-promise li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 15px;
            color: var(--text-mid);
            line-height: 1.6;
        }
        .contact-promise li::before {
            content: '';
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 2px;
            flex-shrink: 0;
            margin-top: 8px;
        }
        .contact-promise li strong {
            color: var(--text-hi);
        }
        .contact-wechat {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 8px;
            padding: 12px 20px;
            font-size: 14px;
            color: var(--text-mid);
        }
        .contact-wechat i {
            color: var(--primary);
            font-size: 20px;
        }
        .contact-form .form-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-hi);
            margin-bottom: 6px;
        }
        .contact-form .form-control,
        .contact-form .form-select {
            background: #0E141B;
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 6px;
            color: var(--text-hi);
            min-height: 48px;
            padding: 12px 16px;
            font-size: 15px;
            transition: border-color .2s, box-shadow .2s;
            font-family: var(--font-cn);
            width: 100%;
        }
        .contact-form .form-control::placeholder {
            color: var(--text-low);
        }
        .contact-form .form-control:focus,
        .contact-form .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 2px rgba(18, 185, 142, .15);
            background: #0E141B;
            color: var(--text-hi);
            outline: none;
        }
        .contact-form .form-select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23B7C4CF' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
            padding-right: 40px;
        }
        .contact-form textarea.form-control {
            min-height: 100px;
            resize: vertical;
        }
        .form-tip {
            font-size: 13px;
            color: var(--text-low);
            text-align: center;
            margin-top: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        .form-tip i {
            color: var(--primary);
        }
        .form-success {
            display: none;
            background: rgba(18, 185, 142, .12);
            border: 1px solid rgba(18, 185, 142, .3);
            color: var(--primary);
            border-radius: 8px;
            padding: 14px 20px;
            font-size: 14px;
            text-align: center;
            margin-top: 16px;
        }
        .form-success.show {
            display: block;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #06080B;
            padding: 60px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, .04);
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1.4fr;
            gap: 48px;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .04);
        }
        .footer-brand .brand-main {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-hi);
            text-decoration: none;
            display: inline-block;
            margin-bottom: 8px;
        }
        .footer-brand p {
            color: var(--text-low);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 8px;
            max-width: 260px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 16px;
            letter-spacing: .03em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: var(--text-low);
            font-size: 14px;
            text-decoration: none;
            transition: color .25s, padding-left .25s;
            display: inline-block;
        }
        .footer-col ul a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-low);
            font-size: 14px;
            margin-bottom: 12px;
        }
        .footer-contact li i {
            color: var(--primary);
            width: 16px;
            text-align: center;
            font-size: 14px;
        }
        .footer-bottom {
            max-width: 1240px;
            margin: 0 auto;
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #5d6b78;
        }
        .footer-bottom a {
            color: #5d6b78;
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1199.98px) {
            .header-inner {
                padding: 0 24px;
            }
            .main-nav {
                gap: 4px;
            }
            .main-nav a {
                font-size: 14px;
                padding: 8px 10px;
            }
            .service-matrix {
                flex-direction: column;
            }
            .service-index {
                width: 100%;
                border-right: none;
                border-bottom: 1px solid var(--line);
                display: flex;
                overflow-x: auto;
                padding: 12px;
                gap: 4px;
                min-width: 0;
            }
            .service-nav {
                flex-direction: column;
                align-items: flex-start;
                padding: 14px 18px;
                min-width: 130px;
                border-left: none;
                border-bottom: 3px solid transparent;
                border-radius: 8px;
                background: var(--surface);
                margin-bottom: 4px;
                width: auto;
                flex-shrink: 0;
            }
            .service-nav.active {
                border-bottom-color: var(--primary);
                background: rgba(18, 185, 142, .08);
            }
            .service-nav .svc-num {
                font-size: 16px;
                min-width: 0;
            }
            .service-nav .svc-name {
                font-size: 15px;
            }
            .service-nav .svc-brief {
                font-size: 12px;
            }
            .service-detail {
                padding: 28px;
            }
            .service-detail-inner {
                flex-direction: column;
            }
            .service-detail-media {
                flex: none;
                max-width: none;
                width: 100%;
                height: 220px;
            }
            .service-detail-media img {
                min-height: 0;
                height: 220px;
            }
        }

        @media (max-width: 991.98px) {
            .header-inner {
                height: 64px;
            }
            .main-nav {
                display: none;
            }
            .navbar-toggler-custom {
                display: inline-flex;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.show {
                display: block;
            }
            .hero-section {
                min-height: auto;
                padding-top: 64px;
            }
            .hero-main-row {
                min-height: auto;
                padding: 40px 0 60px;
            }
            .hero-copy h1 {
                font-size: 34px;
            }
            .hero-visual {
                margin-top: 40px;
            }
            .hero-visual img {
                min-height: 320px;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .metrics-panel {
                margin-top: -40px;
            }
            .metric-card {
                border-right: none;
                border-bottom: 1px solid var(--line);
            }
            .metric-card:nth-child(odd) {
                border-right: 1px solid var(--line);
            }
            .metric-card:last-child {
                border-bottom: none;
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .vs-badge-center {
                top: 50%;
                left: 50%;
            }
            .compare-column.weak-side {
                order: 1;
            }
            .compare-column.strong-side {
                order: 2;
            }
            .vs-badge-center {
                position: static;
                transform: none;
                margin: 4px auto;
                width: 56px;
                height: 56px;
            }
            .compare-conclusion {
                flex-direction: column;
                text-align: center;
            }
            .insights-wrap {
                grid-template-columns: 1fr;
            }
            .insights-sidebar {
                margin-top: 10px;
            }
            .contact-wrap {
                grid-template-columns: 1fr;
                padding: 32px 24px;
            }
            .contact-info {
                margin-bottom: 24px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 30px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-inner {
                padding: 0 16px;
                height: 58px;
            }
            .brand-main {
                font-size: 16px;
            }
            .brand-sub {
                font-size: 10px;
            }
            .header-right .search-toggle {
                display: none;
            }
            .hero-copy h1 {
                font-size: 28px;
                line-height: 1.25;
            }
            .hero-lead {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-stats {
                gap: 16px;
                justify-content: space-between;
            }
            .hero-stat .num {
                font-size: 26px;
            }
            .hero-visual img {
                min-height: 240px;
            }
            .hero-badge {
                padding: 10px 14px;
            }
            .hero-badge strong {
                font-size: 17px;
            }
            .hero-badge .badge-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
            .metrics-panel {
                padding: 20px 16px;
                margin-top: -24px;
            }
            .metric-card {
                padding: 16px 8px;
                border-bottom: 1px solid var(--line);
            }
            .metric-ring {
                width: 72px;
                height: 72px;
            }
            .metric-ring .ring-value {
                font-size: 18px;
            }
            .metric-label {
                font-size: 14px;
            }
            .service-index {
                padding: 10px;
            }
            .service-nav {
                min-width: 110px;
                padding: 12px 14px;
            }
            .service-detail {
                padding: 20px 16px;
            }
            .service-detail-copy h3 {
                font-size: 22px;
            }
            .svc-info-list {
                grid-template-columns: 1fr;
            }
            .compare-column {
                padding: 24px 20px;
            }
            .compare-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
            .compare-row .row-value {
                text-align: left;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .insights-list a {
                flex-direction: row;
                align-items: flex-start;
                padding: 16px 10px;
            }
            .faq-wrap {
                padding: 0 4px;
            }
            .accordion-button {
                font-size: 15px;
                padding: 18px 44px 18px 18px;
                line-height: 1.45;
            }
            .accordion-button::after {
                right: 16px;
                font-size: 22px;
            }
            .accordion-body {
                padding: 0 18px 20px;
            }
            .contact-form .row {
                margin: 0;
            }
            .contact-form .col-12 {
                padding: 0;
            }
            .contact-form .form-label {
                font-size: 13px;
            }
            .footer-inner {
                padding-left: 16px;
                padding-right: 16px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 399.98px) {
            .hero-stat .num {
                font-size: 22px;
            }
            .hero-stats {
                gap: 12px;
            }
            .header-cta {
                display: none;
            }
            .header-right {
                gap: 8px;
            }
        }

        /* ========== 滚动动画 ========== */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity .6s ease, transform .6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: index */
/* ============================================================
   深圳高端外卖工作室 - 完整视觉系统
   ============================================================ */
:root {
  --bg-deep: #0B0F14;
  --bg-panel: #141A22;
  --surface: #1C2530;
  --line: rgba(255,255,255,0.08);
  --primary: #12B98E;
  --primary-strong: #0FA37A;
  --accent: #F59E2E;
  --text-hi: #F4F7FA;
  --text-mid: #B7C4CF;
  --text-low: #7C8A99;
  --ink-on-primary: #06251C;
  --radius-lg: 10px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --shadow: 0 10px 24px rgba(0,0,0,0.25);
  --shadow-lg: 0 18px 40px rgba(0,0,0,0.4);
  --font-sans: -apple-system, "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --section-gap: clamp(72px, 10vw, 120px);
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}
body {
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-hi);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  color: var(--text-mid);
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: var(--primary);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button, input, select, textarea {
  font-family: inherit;
}
p {
  margin-bottom: 1em;
}
.container {
  max-width: 1240px;
  padding-left: 20px;
  padding-right: 20px;
}
section {
  position: relative;
}
::selection {
  background: var(--primary);
  color: var(--ink-on-primary);
}
h1, h2, h3, h4, h5, h6 {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

/* ---------- 按钮体系 ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 32px;
  background: var(--primary);
  color: var(--ink-on-primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.2;
  transition: all 0.2s ease;
  cursor: pointer;
}
.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a1306;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.btn-primary:active {
  transform: scale(0.98);
}
.btn-primary:focus-visible,
.btn-outline:focus-visible,
.accordion-button:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible {
  outline: 2px solid var(--primary-strong);
  outline-offset: 3px;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 32px;
  background: transparent;
  color: var(--text-hi);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 16px;
  transition: all 0.2s ease;
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: scale(0.98);
}
.btn-sm-pri {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 18px;
  background: var(--primary);
  color: var(--ink-on-primary);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: none;
  transition: all 0.2s ease;
}
.btn-sm-pri:hover {
  background: var(--accent);
  color: #1a1306;
  transform: translateY(-1px);
}
.btn-sm-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 18px;
  background: transparent;
  color: var(--text-hi);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: all 0.2s ease;
}
.btn-sm-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ---------- 徽章 / 标签 ---------- */
.badge-accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 46, 0.12);
  color: var(--accent);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
}
.badge-accent::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(245, 158, 46, 0.6);
}
.badge-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(18, 185, 142, 0.12);
  color: var(--primary);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
}
.badge-primary::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(18, 185, 142, 0.5);
}
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.feature-tags span {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  color: var(--text-mid);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
}

/* ---------- 表单 ---------- */
.form-control, .form-select {
  min-height: 48px;
  background: #0E141B;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  color: var(--text-hi);
  font-size: 15px;
  padding: 10px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}
.form-control:focus, .form-select:focus {
  background: #0E141B;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(18, 185, 142, 0.15);
  color: var(--text-hi);
}
.form-control::placeholder {
  color: var(--text-low);
}
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23B7C4CF' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.form-select option {
  background: var(--bg-panel);
  color: var(--text-hi);
}
.form-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-mid);
  margin-bottom: 8px;
}

/* ============================================================
   头部导航
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  transition: background 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(11, 15, 20, 0.94);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  border-bottom: 1px solid var(--line);
}
.header-split {
  display: flex;
  align-items: center;
  height: 72px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 32px;
}
.header-left {
  width: 60%;
  display: flex;
  align-items: center;
  gap: 36px;
}
.header-right {
  width: 40%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--text-hi);
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.brand:hover {
  color: var(--primary);
}
.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 12px rgba(18, 185, 142, 0.6);
  flex-shrink: 0;
}
.brand-sub {
  display: block;
  font-size: 11px;
  font-weight: 400;
  color: var(--text-low);
  letter-spacing: 0.06em;
  margin-top: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-size: 15px;
  color: var(--text-mid);
  font-weight: 400;
  position: relative;
  padding: 4px 0;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--primary);
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.25s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-links a.active {
  color: var(--primary);
}
.header-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 22px;
  background: var(--primary);
  color: var(--ink-on-primary);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s;
}
.header-nav-cta:hover {
  background: var(--accent);
  color: #1a1306;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text-mid);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.2s;
}
.search-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ============================================================
   首屏 Hero（分屏）
   ============================================================ */
.hero-section {
  min-height: 100vh;
  min-height: 720px;
  display: flex;
  align-items: stretch;
  background: var(--bg-deep);
  padding-top: 72px;
}
.hero-split {
  display: flex;
  width: 100%;
}
.hero-content {
  width: 60%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px clamp(28px, 5vw, 80px) 100px;
  position: relative;
  z-index: 2;
}
.hero-content::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.hero-content > * {
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  width: max-content;
  gap: 10px;
  background: rgba(18, 185, 142, 0.1);
  border: 1px solid rgba(18, 185, 142, 0.25);
  color: var(--primary);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 10px rgba(18, 185, 142, 0.7);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero-content h1 {
  font-size: clamp(40px, 5.5vw, 64px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
  color: var(--text-hi);
  max-width: 620px;
}
.hero-sub {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-mid);
  max-width: 540px;
  margin-bottom: 30px;
}
.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}
.hero-note {
  font-size: 13px;
  color: var(--text-low);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: -14px;
  margin-bottom: 0;
}
.hero-note i {
  color: var(--primary);
  font-size: 12px;
}
.hero-stats {
  display: flex;
  gap: clamp(24px, 4vw, 56px);
  border-top: 1px solid var(--line);
  padding-top: 24px;
  max-width: 540px;
}
.hero-stat strong {
  display: block;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  color: var(--text-hi);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.hero-stat span {
  font-size: 13px;
  color: var(--text-low);
}
.hero-visual {
  width: 40%;
  position: relative;
  background-size: cover;
  background-position: center;
  min-height: 100%;
}
.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--bg-deep) 0%, rgba(11, 15, 20, 0.35) 30%, rgba(11, 15, 20, 0) 60%);
  pointer-events: none;
}
.hero-visual-inner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  z-index: 1;
}
.hero-feature-card {
  width: 100%;
  max-width: 350px;
  background: rgba(20, 26, 34, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 2;
}
.hero-feature-card .badge-accent {
  margin-bottom: 14px;
}
.hero-feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-hi);
}
.hero-feature-card .price-line {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}
.hero-feature-card .price-line small {
  font-size: 13px;
  color: var(--text-low);
  font-weight: 400;
}
.hero-feature-card .feature-tags {
  margin-bottom: 20px;
}
.feature-actions {
  display: flex;
  gap: 10px;
}
.hero-param {
  position: absolute;
  z-index: 2;
  background: rgba(11, 15, 20, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  backdrop-filter: blur(6px);
  text-align: center;
  min-width: 110px;
}
.hero-param strong {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.hero-param span {
  font-size: 12px;
  color: var(--text-mid);
}
.hero-param.top-right {
  top: 18%;
  right: 8%;
}
.hero-param.bottom-left {
  bottom: 14%;
  left: 6%;
}
.hero-param.CadetBlue {
  top: 8%;
  left: 10%;
}
.hero-param strong.teal {
  color: var(--primary);
}

/* ============================================================
   板块通用标题
   ============================================================ */
.section-padding {
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.section-head {
  max-width: 740px;
  margin-bottom: clamp(36px, 5vw, 56px);
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.section-head .eyebrow {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-hi);
  margin-bottom: 14px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-mid);
  margin-bottom: 0;
}

/* ============================================================
   指标看板
   ============================================================ */
.metrics-section {
  position: relative;
  z-index: 5;
  margin-top: -56px;
}
.metrics-board {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  padding: clamp(24px, 4vw, 40px) clamp(20px, 3vw, 36px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.metric-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 12px;
  border-right: 1px solid var(--line);
}
.metric-item:last-child {
  border-right: none;
}
.metric-ring {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
}
.metric-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}
.ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 5;
}
.ring-fg {
  fill: none;
  stroke: var(--primary);
  stroke-width: 5;
  stroke-linecap: round;
  transition: stroke-dasharray 0.6s ease;
}
.metric-ring .accent-ring {
  stroke: var(--accent);
}
.metric-info strong {
  display: block;
  font-size: clamp(24px, 2.5vw, 32px);
  font-weight: 700;
  color: var(--text-hi);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.metric-info strong small {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-mid);
  margin-left: 2px;
}
.metric-info span {
  font-size: 13px;
  color: var(--text-low);
}
.metric-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--primary);
  margin-top: 2px;
}
.metric-trend.up {
  color: var(--primary);
}
.metric-trend.down {
  color: var(--accent);
}

/* ============================================================
   服务矩阵
   ============================================================ */
.service-section {
  background: var(--bg-deep);
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.service-wrap {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: stretch;
}
.service-index {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.service-index-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 22px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.service-index-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--primary);
  transform: scaleY(0);
  transition: transform 0.25s ease;
}
.service-index-item:hover {
  border-color: rgba(18, 185, 142, 0.3);
  transform: translateX(4px);
}
.service-index-item.active {
  background: rgba(18, 185, 142, 0.08);
  border-color: rgba(18, 185, 142, 0.4);
}
.service-index-item.active::before {
  transform: scaleY(1);
}
.service-idx-num {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-low);
  font-variant-numeric: tabular-nums;
  min-width: 34px;
}
.service-index-item.active .service-idx-num {
  color: var(--primary);
}
.service-idx-text strong {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 2px;
}
.service-idx-text span {
  font-size: 13px;
  color: var(--text-low);
}
.service-detail-panels {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 40px);
  min-height: 420px;
  position: relative;
  overflow: hidden;
}
.service-detail {
  display: none;
  animation: fadeSlide 0.3s ease;
}
.service-detail.active {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.service-detail-info {
  display: flex;
  flex-direction: column;
}
.service-detail-info h3 {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 10px;
}
.service-detail-info .desc {
  font-size: 15px;
  color: var(--text-mid);
  line-height: 1.8;
  margin-bottom: 20px;
}
.service-meta {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.service-meta li {
  display: flex;
  gap: 12px;
  font-size: 14px;
  color: var(--text-mid);
}
.service-meta li i {
  color: var(--primary);
  margin-top: 4px;
  font-size: 13px;
  width: 16px;
  flex-shrink: 0;
}
.service-meta li strong {
  color: var(--text-hi);
  font-weight: 500;
  min-width: 72px;
  flex-shrink: 0;
}
.service-meta li span {
  line-height: 1.7;
}
.service-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}
.service-detail-img {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  min-height: 240px;
  background-size: cover;
  background-position: center;
}
.service-detail-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(11, 15, 20, 0.35), transparent 50%);
}
.service-detail-img .img-caption {
  position: absolute;
  bottom: 14px;
  left: 14px;
  z-index: 1;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(11, 15, 20, 0.6);
  padding: 5px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

/* ============================================================
   结果对比（VS）
   ============================================================ */
.compare-section {
  background: var(--bg-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.compare-board {
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 36px);
  max-width: 1000px;
  margin: 0 auto;
}
.compare-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}
.compare-head-label {
  width: 42%;
  text-align: center;
  font-size: 17px;
  font-weight: 600;
}
.compare-head-label.weak {
  color: var(--text-low);
}
.compare-head-label.strong {
  color: var(--text-hi);
}
.compare-head-label .rec-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  background: rgba(245, 158, 46, 0.15);
  color: var(--accent);
  border-radius: 999px;
  padding: 3px 10px;
  margin-left: 6px;
  vertical-align: 2px;
}
.vs-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--accent);
  color: #1a1306;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.03em;
  flex-shrink: 0;
  box-shadow: 0 0 0 4px rgba(245, 158, 46, 0.15);
}
.compare-row {
  display: flex;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.compare-row:last-child {
  border-bottom: none;
}
.compare-cell {
  width: 42%;
  text-align: center;
  font-size: 14px;
  line-height: 1.6;
}
.compare-cell.weak-value {
  color: var(--text-low);
}
.compare-cell.strong-value {
  color: var(--text-hi);
  font-weight: 500;
}
.compare-cell.strong-value i {
  color: var(--primary);
  margin-right: 6px;
  font-size: 13px;
}
.compare-param {
  width: 16%;
  text-align: center;
  font-size: 13px;
  color: var(--accent);
  font-weight: 500;
  letter-spacing: 0.04em;
}
.compare-cta {
  text-align: center;
  margin-top: 28px;
  padding: 24px;
  background: rgba(18, 185, 142, 0.06);
  border: 1px dashed rgba(18, 185, 142, 0.3);
  border-radius: var(--radius-md);
}
.compare-cta p {
  color: var(--text-mid);
  font-size: 15px;
  margin-bottom: 14px;
}

/* ============================================================
   爆款清单
   ============================================================ */
.popular-section {
  background: var(--bg-deep);
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.popular-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.popular-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  position: relative;
}
.popular-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(18, 185, 142, 0.3);
}
.popular-card .rank {
  position: absolute;
  top: -10px;
  left: 18px;
  background: var(--accent);
  color: #1a1306;
  font-size: 12px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 4px;
  letter-spacing: 0.03em;
}
.popular-card .rank.hot {
  background: var(--primary);
  color: var(--ink-on-primary);
}
.popular-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-hi);
  margin-top: 12px;
  margin-bottom: 8px;
}
.popular-card .p-desc {
  font-size: 13px;
  color: var(--text-mid);
  line-height: 1.7;
  margin-bottom: 14px;
  flex: 1;
}
.popular-card .p-price {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin-bottom: 16px;
}
.popular-card .p-price small {
  font-size: 13px;
  color: var(--text-low);
  font-weight: 400;
}
.popular-card .p-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}
.popular-card .p-tags span {
  font-size: 11px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  color: var(--text-mid);
  border-radius: 4px;
  padding: 3px 8px;
}

/* ============================================================
   口碑气泡
   ============================================================ */
.testimonial-section {
  background: var(--bg-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-bubble {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
  transition: all 0.25s ease;
}
.testimonial-bubble:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.testimonial-bubble::before {
  content: '\201C';
  position: absolute;
  top: 6px;
  left: 18px;
  font-size: 56px;
  font-family: Georgia, serif;
  color: rgba(18, 185, 142, 0.25);
  line-height: 1;
}
.testimonial-bubble p {
  font-size: 14px;
  color: var(--text-mid);
  line-height: 1.8;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}
.testimonial-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.testimonial-meta .avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: var(--ink-on-primary);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.testimonial-meta strong {
  display: block;
  font-size: 14px;
  color: var(--text-hi);
  font-weight: 500;
  line-height: 1.3;
}
.testimonial-meta span {
  font-size: 12px;
  color: var(--text-low);
}
.testimonial-stars {
  color: var(--accent);
  font-size: 12px;
  margin-top: 2px;
  letter-spacing: 2px;
}

/* ============================================================
   资讯区（内容列表）
   ============================================================ */
.news-section {
  background: var(--bg-deep);
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.news-wrap {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: clamp(28px, 4vw, 60px);
}
.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.news-list li {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: flex-start;
  gap: 18px;
  transition: all 0.2s ease;
}
.news-list li:first-child {
  padding-top: 0;
}
.news-list li:hover {
  padding-left: 8px;
}
.news-list .news-date {
  font-size: 12px;
  color: var(--text-low);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}
.news-list a.news-title {
  font-size: 16px;
  color: var(--text-hi);
  font-weight: 500;
  line-height: 1.5;
  display: block;
  margin-bottom: 4px;
  transition: color 0.2s;
}
.news-list a.news-title:hover {
  color: var(--primary);
}
.news-list .news-excerpt {
  font-size: 13px;
  color: var(--text-low);
  line-height: 1.7;
}
.news-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.news-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px;
}
.news-card h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 14px;
}
.news-card .tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.news-card .tag-cloud a {
  font-size: 13px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 14px;
  color: var(--text-mid);
  transition: all 0.2s;
}
.news-card .tag-cloud a:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.news-card .mini-cta p {
  font-size: 14px;
  color: var(--text-mid);
  margin-bottom: 16px;
  line-height: 1.7;
}

/* ============================================================
   FAQ 手风琴
   ============================================================ */
.faq-section {
  background: var(--bg-panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
}
.faq-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.accordion {
  --bs-accordion-bg: var(--surface);
  --bs-accordion-border-color: var(--line);
  --bs-accordion-btn-bg: var(--surface);
  --bs-accordion-active-bg: var(--surface);
  --bs-accordion-border-width: 1px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.accordion-item {
  background: var(--surface);
  border: 1px solid var(--line) !important;
  border-radius: var(--radius-md) !important;
  overflow: hidden;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(18, 185, 142, 0.35) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.accordion-button {
  background: var(--surface);
  color: var(--text-hi);
  font-size: 16px;
  font-weight: 500;
  padding: 20px 24px;
  border: none;
  box-shadow: none !important;
  transition: background 0.2s;
}
.accordion-button:hover {
  background: rgba(18, 185, 142, 0.05);
  color: var(--primary);
}
.accordion-button:not(.collapsed) {
  background: var(--surface);
  color: var(--primary);
  box-shadow: none;
}
.accordion-button::after {
  content: '+';
  background-image: none;
  font-size: 26px;
  font-weight: 400;
  line-height: 1;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: transform 0.25s ease;
}
.accordion-button:not(.collapsed)::after {
  background-image: none;
  transform: rotate(45deg);
  color: var(--accent);
}
.accordion-body {
  background: var(--surface);
  color: var(--text-mid);
  font-size: 15px;
  line-height: 1.85;
  padding: 0 24px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* ============================================================
   转化表单
   ============================================================ */
.contact-section {
  background: var(--bg-deep);
  padding-top: var(--section-gap);
  padding-bottom: var(--section-gap);
  position: relative;
}
.contact-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
  pointer-events: none;
}
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 5vw, 64px);
  position: relative;
  z-index: 2;
}
.contact-info-side h2 {
  font-size: clamp(28px, 3.5vw, 38px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}
.contact-info-side > p {
  color: var(--text-mid);
  margin-bottom: 28px;
  font-size: 15px;
}
.contact-promises {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.contact-promises li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text-mid);
  line-height: 1.6;
}
.contact-promises li::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 2px;
  flex-shrink: 0;
  margin-top: 8px;
}
.contact-channel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.contact-channel div {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-mid);
}
.contact-channel i {
  color: var(--primary);
  width: 18px;
  text-align: center;
  flex-shrink: 0;
}
.contact-form-side {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 40px);
  box-shadow: var(--shadow);
}
.contact-form-side .form-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-hi);
}
.contact-form-side .form-subtitle {
  font-size: 14px;
  color: var(--text-low);
  margin-bottom: 24px;
}
.form-success {
  display: none;
  background: rgba(18, 185, 142, 0.12);
  border: 1px solid rgba(18, 185, 142, 0.4);
  color: var(--primary);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  font-size: 15px;
  margin-top: 16px;
  align-items: center;
  gap: 10px;
}
.form-success.show {
  display: flex;
}
.form-success i {
  font-size: 18px;
}
.form-tip {
  font-size: 12px;
  color: var(--text-low);
  text-align: center;
  margin-top: 14px;
  margin-bottom: 0;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: #070B0F;
  border-top: 1px solid var(--line);
  padding-top: 60px;
  padding-bottom: 30px;
  color: var(--text-mid);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand .brand-dot {
  width: 8px;
  height: 8px;
}
.footer-brand-sub {
  font-size: 13px;
  color: var(--text-low);
  line-height: 1.7;
  max-width: 320px;
}
.footer-links-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 16px;
}
.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 14px;
  color: var(--text-mid);
  transition: color 0.2s, padding-left 0.2s;
}
.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-contact p {
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text-mid);
  display: flex;
  gap: 10px;
}
.footer-contact i {
  color: var(--text-low);
  width: 16px;
  text-align: center;
  margin-top: 4px;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--text-low);
}
.footer-bottom a {
  color: var(--text-low);
}
.footer-bottom a:hover {
  color: var(--primary);
}

/* ============================================================
   通用响应式
   ============================================================ */
@media (max-width: 1199px) {
  .popular-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-wrap {
    grid-template-columns: 250px 1fr;
  }
  .news-wrap {
    grid-template-columns: 1fr 300px;
  }
}
@media (max-width: 991px) {
  .site-header {
    height: 60px;
  }
  .header-split {
    height: 60px;
    padding: 0 16px;
  }
  .header-left {
    width: auto;
    gap: 20px;
  }
  .header-right {
    width: auto;
    margin-left: auto;
  }
  .nav-links {
    gap: 16px;
  }
  .nav-links a {
    font-size: 14px;
  }
  .header-nav-cta {
    padding: 0 16px;
    min-height: 36px;
    font-size: 13px;
  }
  .search-btn {
    width: 36px;
    height: 36px;
  }
  .hero-section {
    padding-top: 60px;
    min-height: auto;
  }
  .hero-split {
    flex-direction: column;
  }
  .hero-content {
    width: 100%;
    padding: 64px 24px 56px;
    min-height: auto;
  }
  .hero-visual {
    width: 100%;
    min-height: 420px;
    background-position: center;
  }
  .hero-visual::after {
    background: linear-gradient(0deg, var(--bg-deep) 0%, rgba(11, 15, 20, 0.2) 100%);
  }
  .hero-feature-card {
    max-width: 90%;
  }
  .metrics-section {
    margin-top: 0;
  }
  .metrics-board {
    grid-template-columns: repeat(2, 1fr);
  }
  .metric-item {
    border-right: none;
    border-bottom: 1px solid var(--line);
    padding: 12px;
  }
  .metric-item:nth-child(3), .metric-item:nth-child(4) {
    border-bottom: none;
  }
  .service-wrap {
    grid-template-columns: 1fr;
  }
  .service-index {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 8px;
  }
  .service-index-item {
    min-width: 180px;
    padding: 14px 16px;
  }
  .service-index-item::before {
    width: 100%;
    height: 3px;
    top: auto;
    bottom: 0;
    transform: scaleX(0);
  }
  .service-index-item.active::before {
    transform: scaleX(1);
  }
  .service-index-item:hover {
    transform: translateY(-2px);
  }
  .service-detail.active {
    grid-template-columns: 1fr;
  }
  .service-detail-img {
    min-height: 200px;
  }
  .compare-cell {
    width: 40%;
  }
  .compare-param {
    width: 20%;
  }
  .testimonial-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }
  .news-wrap {
    grid-template-columns: 1fr;
  }
  .contact-wrap {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand-col {
    grid-column: 1 / -1;
  }
}
@media (max-width: 767px) {
  .brand {
    font-size: 16px;
  }
  .brand-sub {
    font-size: 10px;
  }
  .nav-links {
    display: none;
  }
  .header-nav-cta {
    display: none;
  }
  .hero-content h1 {
    font-size: 34px;
  }
  .hero-sub {
    font-size: 15px;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 16px 28px;
  }
  .hero-param.top-right {
    top: 10%;
    right: 5%;
  }
  .hero-param.bottom-left {
    bottom: 10%;
    left: 4%;
  }
  .metrics-board {
    grid-template-columns: repeat(2, 1fr);
    padding: 20px 14px;
  }
  .metric-item {
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    gap: 8px;
  }
  .metric-ring {
    width: 48px;
    height: 48px;
  }
  .metric-info strong {
    font-size: 20px;
  }
  .compare-head-label {
    font-size: 14px;
  }
  .vs-badge {
    width: 36px;
    height: 36px;
    font-size: 12px;
  }
  .compare-row {
    flex-wrap: wrap;
    padding: 12px 0;
    gap: 4px 0;
  }
  .compare-cell {
    width: 50%;
    text-align: left;
    font-size: 13px;
    padding: 2px 8px;
  }
  .compare-cell.weak-value {
    text-align: left;
  }
  .compare-cell.strong-value {
    text-align: left;
  }
  .compare-param {
    width: 100%;
    text-align: left;
    font-size: 12px;
    padding: 4px 8px 8px;
    color: var(--accent);
  }
  .popular-grid {
    grid-template-columns: 1fr;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .news-list li {
    flex-direction: column;
    gap: 8px;
  }
  .news-list .news-date {
    align-self: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-brand-col {
    grid-column: auto;
  }
}
@media (max-width: 575px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }
  .hero-content {
    padding: 56px 16px 48px;
  }
  .hero-content h1 {
    font-size: 30px;
  }
  .hero-visual {
    min-height: 360px;
  }
  .hero-feature-card {
    padding: 20px;
  }
  .hero-feature-card h3 {
    font-size: 19px;
  }
  .hero-feature-card .price-line {
    font-size: 20px;
  }
  .feature-actions {
    flex-direction: column;
  }
  .feature-actions .btn-sm-pri,
  .feature-actions .btn-sm-outline {
    width: 100%;
  }
  .hero-cta .btn-primary,
  .hero-cta .btn-outline {
    width: 100%;
  }
  .metrics-board {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .metric-item {
    padding: 12px 8px;
    border-bottom: 1px solid var(--line);
  }
  .metric-item:nth-child(3), .metric-item:nth-child(4) {
    border-bottom: none;
  }
  .service-detail-panels {
    padding: 20px;
  }
  .service-meta li {
    flex-direction: column;
    gap: 2px;
  }
  .service-meta li strong {
    min-width: 0;
  }
  .compare-board {
    padding: 16px;
  }
  .compare-head {
    flex-direction: column;
    gap: 8px;
  }
  .compare-head-label {
    width: 100%;
    text-align: center;
  }
  .vs-badge {
    margin: 4px 0;
  }
  .contact-form-side {
    padding: 20px 16px;
  }
  .btn-primary, .btn-outline {
    min-height: 48px;
    padding: 0 20px;
    font-size: 15px;
  }
  .form-control, .form-select {
    font-size: 14px;
  }
}