/* ====================== CSS 变量 ====================== */
    :root {
        --primary: #7C5CFC;
        --primary-light: #A78BFA;
        --primary-dark: #6B46E5;
        --primary-glow: rgba(124,92,252,.15);
        --accent: #4F6EF7;
        --accent-light: #6B8AFF;
        --grad-primary: linear-gradient(135deg, #7C5CFC 0%, #4F6EF7 100%);
        --grad-hero: linear-gradient(160deg, #F5F0FF 0%, #FAFAFF 40%, #FFF 100%);
        --grad-glass: linear-gradient(135deg, rgba(255,255,255,.85) 0%, rgba(255,255,255,.65) 100%);
        --grad-card-hover: linear-gradient(135deg, rgba(124,92,252,.03) 0%, rgba(79,110,247,.03) 100%);
        --bg-w: #ffffff;
        --bg-subtle: #FAFAFF;
        --bg-section: #F5F3FF;
        --t-title: #0F172A;
        --t-sub: #64748B;
        --t-body: #334155;
        --t-muted: #94A3B8;
        --border-glass: rgba(255,255,255,.6);
        --border-subtle: rgba(124,92,252,.08);
        --border-card: rgba(226,232,240,.6);
        --shadow-glass: 0 8px 32px rgba(124,92,252,.08), 0 1px 2px rgba(0,0,0,.04);
        --shadow-card: 0 1px 3px rgba(0,0,0,.04), 0 4px 24px rgba(124,92,252,.06);
        --shadow-card-hover: 0 8px 40px rgba(124,92,252,.12), 0 2px 8px rgba(0,0,0,.04);
        --shadow-float: 0 20px 60px rgba(124,92,252,.1), 0 4px 16px rgba(0,0,0,.04);
        --shadow-btn: 0 4px 16px rgba(124,92,252,.25);
        --shadow-btn-hover: 0 8px 28px rgba(124,92,252,.35);
        --radius: 16px;
        --radius-lg: 24px;
        --radius-xl: 32px;
        --radius-sm: 12px;
        --radius-xs: 8px;
        --ease-spring: cubic-bezier(.34,1.56,.64,1);
        --ease-out: cubic-bezier(.16,1,.3,1);
    }


    /* ====================== 通用布局 ====================== */
    .sa-w { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
    .sa-section { padding: 64px 0; position: relative; overflow: hidden; }

    /* ====================== 滚动进场动画 ====================== */
    .reveal {
        opacity: 0;
        transform: translateY(32px);
        transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
    }
    .reveal.visible { opacity: 1; transform: translateY(0); }
    .reveal-d1 { transition-delay: .1s; }
    .reveal-d2 { transition-delay: .2s; }
    .reveal-d3 { transition-delay: .3s; }
    .reveal-d4 { transition-delay: .4s; }
    .reveal-d5 { transition-delay: .5s; }

    /* ====================== 装饰 ====================== */
    .deco-orb {
        position: absolute; border-radius: 50%;
        pointer-events: none; z-index: 0;
        filter: blur(80px);
    }
    .deco-grid-dot {
        position: absolute; pointer-events: none; z-index: 0;
        width: 200px; height: 200px;
        background-image: radial-gradient(circle, rgba(124,92,252,.08) 1.2px, transparent 1.2px);
        background-size: 20px 20px;
        opacity: .5;
    }
    .deco-line {
        position: absolute; pointer-events: none; z-index: 0;
    }

    /* Low-poly mesh */
    .deco-mesh {
        position: absolute; pointer-events: none; z-index: 0; opacity: .04;
    }

    /* ====================== 按钮 ====================== */
    .btn-primary {
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        height: 52px; padding: 0 32px;
        background: var(--grad-primary);
        color: #fff; font-size: 15px; font-weight: 600;
        border: none; border-radius: 14px; cursor: pointer;
        text-decoration: none;
        box-shadow: var(--shadow-btn);
        transition: all .3s var(--ease-out);
        position: relative; overflow: hidden;
        letter-spacing: .01em;
    }
    .btn-primary::before {
        content: '';
        position: absolute; inset: 0;
        background: linear-gradient(135deg, rgba(255,255,255,.2) 0%, transparent 50%);
        opacity: 0; transition: opacity .3s;
    }
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-btn-hover);
    }
    .btn-primary:hover::before { opacity: 1; }

    .btn-ghost {
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        height: 52px; padding: 0 28px;
        background: rgba(255,255,255,.7);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        color: var(--primary); font-size: 15px; font-weight: 600;
        border: 1.5px solid rgba(124,92,252,.15); border-radius: 14px; cursor: pointer;
        text-decoration: none;
        transition: all .3s var(--ease-out);
        letter-spacing: .01em;
    }
    .btn-ghost:hover {
        background: rgba(124,92,252,.06);
        border-color: rgba(124,92,252,.3);
        transform: translateY(-2px);
    }

    .btn-sm {
        height: 42px; padding: 0 22px; font-size: 13px; border-radius: 10px;
    }

    /* ====================== 段落标题通用 ====================== */
    .sec-label {
        display: inline-flex; align-items: center; gap: 8px;
        background: linear-gradient(135deg, rgba(124,92,252,.08) 0%, rgba(79,110,247,.06) 100%);
        color: var(--primary);
        font-size: 13px; font-weight: 700;
        padding: 8px 18px;
        border-radius: 100px;
        margin-bottom: 24px;
        letter-spacing: .06em;
        text-transform: uppercase;
        border: 1px solid rgba(124,92,252,.1);
    }
    .sec-label svg { width: 14px; height: 14px; }
    .sec-title {
        font-size: 42px; font-weight: 800; color: var(--t-title);
        line-height: 1.2; margin-bottom: 20px;
        letter-spacing: -.03em;
    }
    .sec-title .hl {
        background: var(--grad-primary);
        -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .sec-desc {
        font-size: 18px; color: var(--t-sub); line-height: 1.7;
        max-width: 600px; font-weight: 400;
    }
    .sec-header-center { text-align: center; margin-bottom: 64px; }
    .sec-header-center .sec-desc { margin: 0 auto; }

    /* ====================== HERO ====================== */
    .hero {
        padding: 160px 0 80px;
        position: relative;
        overflow: hidden;
        min-height: 90vh;
        background: linear-gradient(180deg, #F5F0FF 0%, #F0F4FF 40%, #FAFAFF 70%, #fff 100%);
    }
    .hero::before {
        content: '';
        position: absolute; inset: 0;
        background:
            radial-gradient(ellipse 80% 60% at 20% 50%, rgba(124,92,252,.06) 0%, transparent 70%),
            radial-gradient(ellipse 60% 50% at 80% 30%, rgba(79,110,247,.05) 0%, transparent 70%);
        z-index: 0;
    }
    .hero .sa-w { position: relative; z-index: 2; }

    .hero-orb-1 {
        width: 600px; height: 600px;
        background: radial-gradient(circle, rgba(124,92,252,.12) 0%, transparent 70%);
        top: -200px; right: -100px;
        animation: orbDrift1 14s ease-in-out infinite alternate;
    }
    .hero-orb-2 {
        width: 500px; height: 500px;
        background: radial-gradient(circle, rgba(79,110,247,.08) 0%, transparent 70%);
        bottom: -150px; left: -100px;
        animation: orbDrift2 16s ease-in-out infinite alternate;
    }
    .hero-orb-3 {
        width: 300px; height: 300px;
        background: radial-gradient(circle, rgba(124,92,252,.06) 0%, transparent 70%);
        top: 40%; left: 50%;
        animation: orbDrift3 12s ease-in-out infinite alternate;
    }
    @keyframes orbDrift1 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-30px,20px)} }
    @keyframes orbDrift2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(20px,-25px)} }
    @keyframes orbDrift3 { 0%,100%{transform:translate(0,0) scale(1)} 50%{transform:translate(-15px,15px) scale(1.05)} }

    .hero .sa-w {
        display: flex; align-items: center; gap: 80px;
    }
    .hero-left { flex: 1; max-width: 520px; }
    .hero-left h1 {
        font-size: 52px; font-weight: 800; color: var(--t-title);
        line-height: 1.15; margin-bottom: 20px; letter-spacing: -.03em;
    }
    .hero-left h1 .hl {
        font-style: normal;
        background: var(--grad-primary);
        -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero-left .hero-sub {
        font-size: 18px; color: var(--t-sub); line-height: 1.7;
        margin-bottom: 40px; font-weight: 400;
    }
    .hero-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }

    /* Hero 信任指标 */
    .hero-trust { display: flex; align-items: center; gap: 32px; }
    .hero-trust-item { text-align: center; }
    .hero-trust-num {
        font-size: 28px; font-weight: 800; letter-spacing: -.03em;
        background: var(--grad-primary);
        -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero-trust-label { font-size: 12px; color: var(--t-sub); margin-top: 4px; font-weight: 500; }

    /* Hero 右侧浮动面板组 */
    .hero-right {
        flex: 1; position: relative;
        min-height: 520px;
        perspective: 1200px;
    }

    /* 主数据看板 */
    .hero-dashboard {
        position: absolute; top: 30px; left: 0;
        width: 380px;
        background: #fff;
        border-radius: var(--radius-lg);
        box-shadow: 0 20px 60px rgba(15,23,42,.08), 0 1px 3px rgba(0,0,0,.04);
        transform: rotateY(-4deg) rotateX(2deg);
        transition: transform .6s var(--ease-out), box-shadow .6s var(--ease-out);
        z-index: 3;
        overflow: hidden;
    }
    .hero-dashboard:hover {
        transform: rotateY(-1deg) rotateX(1deg);
        box-shadow: 0 24px 72px rgba(15,23,42,.1);
    }
    .dash-bar {
        background: var(--grad-primary);
        padding: 14px 20px;
        display: flex; align-items: center; gap: 12px;
    }
    .dash-dots { display: flex; gap: 6px; }
    .dash-dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.3); display: block; }
    .dash-bar-title { color: rgba(255,255,255,.9); font-size: 13px; font-weight: 600; flex: 1; text-align: center; }

    .dash-body { padding: 20px; }
    .dash-metrics { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 16px; }
    .dash-metric {
        padding: 12px 8px; text-align: center;
        background: var(--bg-section); border-radius: 10px;
    }
    .dash-metric-num { font-size: 20px; font-weight: 800; color: var(--primary); }
    .dash-metric-label { font-size: 10px; color: var(--t-sub); margin-top: 2px; }

    .dash-chart {
        height: 80px; position: relative; margin-bottom: 16px;
        display: flex; align-items: flex-end; gap: 6px; padding: 0 4px;
    }
    .dash-chart-bar {
        flex: 1; border-radius: 4px 4px 0 0;
        background: linear-gradient(180deg, var(--primary) 0%, rgba(124,92,252,.4) 100%);
        transition: height .6s var(--ease-out);
    }

    .dash-list { display: flex; flex-direction: column; gap: 8px; }
    .dash-list-item {
        display: flex; align-items: center; gap: 10px;
        padding: 8px 12px; border-radius: 8px;
        background: var(--bg-subtle);
    }
    .dash-list-dot {
        width: 8px; height: 8px; border-radius: 50%;
        background: var(--primary); flex-shrink: 0;
    }
    .dash-list-dot.green { background: #22C55E; }
    .dash-list-dot.amber { background: #F59E0B; }
    .dash-list-text { flex: 1; }
    .dash-list-name { font-size: 12px; font-weight: 600; color: var(--t-title); }
    .dash-list-desc { font-size: 10px; color: var(--t-sub); }
    .dash-list-badge {
        padding: 3px 8px; border-radius: 6px;
        font-size: 10px; font-weight: 700;
        background: rgba(124,92,252,.1); color: var(--primary);
    }
    .dash-list-badge.hot { background: rgba(239,68,68,.1); color: #EF4444; }

    /* 浮动玻璃面板 */
    .hero-float {
        position: absolute;
        background: rgba(255,255,255,.88);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border: 1px solid rgba(255,255,255,.7);
        border-radius: var(--radius);
        padding: 18px 22px;
        box-shadow: var(--shadow-float);
        z-index: 4;
        animation: heroFloat 6s ease-in-out infinite;
    }
    .hero-float-1 { top: 0; right: 10px; animation-delay: 0s; }
    .hero-float-2 { bottom: 80px; right: -10px; animation-delay: 2s; }
    .hero-float-3 { bottom: 20px; left: 30px; animation-delay: 4s; }
    .hero-float .hf-icon {
        width: 36px; height: 36px; border-radius: 10px;
        background: var(--grad-primary);
        display: flex; align-items: center; justify-content: center;
        margin-bottom: 8px;
    }
    .hero-float .hf-icon svg { width: 18px; height: 18px; fill: #fff; }
    .hero-float .hf-num {
        font-size: 28px; font-weight: 800; letter-spacing: -.03em;
        background: var(--grad-primary);
        -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .hero-float .hf-label {
        font-size: 12px; color: var(--t-sub); margin-top: 2px; font-weight: 500;
    }
    .hero-float .hf-bar {
        width: 100%; height: 4px; background: rgba(124,92,252,.1);
        border-radius: 2px; margin-top: 8px; overflow: hidden;
    }
    .hero-float .hf-bar-fill {
        height: 100%; border-radius: 2px;
        background: var(--grad-primary);
    }

    @keyframes heroFloat {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-10px); }
    }

    /* ====================== 产品定位 ====================== */
    .intro-sec {
        background: linear-gradient(180deg, #F5F0FF 0%, #F7F8FF 100%);
    }
    .intro-wrap {
        max-width: 960px; margin: 0 auto; text-align: center;
        background: #fff;
        border-radius: var(--radius-xl);
        padding: 64px 56px;
        box-shadow: 0 4px 32px rgba(124,92,252,.06), 0 1px 2px rgba(0,0,0,.03);
        border: 1px solid rgba(226,232,240,.5);
    }
    .intro-wrap .sec-title { font-size: 36px; }
    .intro-wrap .intro-body {
        font-size: 17px; color: var(--t-body); line-height: 1.9;
        margin-bottom: 48px;
    }
    .intro-wrap .intro-body strong {
        color: var(--primary); font-weight: 700;
    }
    .intro-pills {
        display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
    }
    .intro-pill {
        display: flex; align-items: center; gap: 10px;
        padding: 14px 24px;
        background: var(--bg-section);
        border: 1px solid var(--border-card);
        border-radius: 14px;
        transition: all .3s var(--ease-out);
        cursor: default;
    }
    .intro-pill:hover {
        border-color: rgba(124,92,252,.2);
        box-shadow: var(--shadow-card);
        transform: translateY(-2px);
    }
    .intro-pill-icon {
        width: 36px; height: 36px;
        background: linear-gradient(135deg, rgba(124,92,252,.1) 0%, rgba(79,110,247,.08) 100%);
        border-radius: 10px;
        display: flex; align-items: center; justify-content: center;
    }
    .intro-pill-icon svg { width: 18px; height: 18px; fill: var(--primary); }
    .intro-pill span { font-size: 14px; color: var(--t-title); font-weight: 600; }

    /* ====================== 三大优势 ====================== */
    .adv-sec { background: var(--bg-w); }
    .adv-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }
    .adv-card {
        border-radius: 20px;
        padding: 40px 32px 36px;
        transition: all .4s var(--ease-out);
        position: relative;
        overflow: hidden;
        border: none;
    }
    .adv-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 16px 48px rgba(0,0,0,.08);
    }
    .adv-card.adv-purple { background: #F3EEFF; }
    .adv-card.adv-blue { background: #EEF4FF; }
    .adv-card.adv-indigo { background: #EDE9FE; }

    .adv-card-num {
        display: inline-flex; align-items: center; justify-content: center;
        width: 52px; height: 52px;
        border-radius: 14px;
        font-size: 20px; font-weight: 800;
        line-height: 1; margin-bottom: 22px;
        letter-spacing: -.02em;
    }
    .adv-purple .adv-card-num { background: #E4D9FF; color: #7B5CFC; }
    .adv-blue .adv-card-num { background: #D6E4FF; color: #3B6CF5; }
    .adv-indigo .adv-card-num { background: #DDD6FE; color: #6D28D9; }

    .adv-card h3 {
        font-size: 20px; font-weight: 700; color: var(--t-title);
        margin-bottom: 10px; line-height: 1.4;
    }
    .adv-card p {
        font-size: 14px; color: var(--t-sub); line-height: 1.75;
        margin-bottom: 28px;
    }

    /* 卡片内 UI 模拟 */
    .adv-mockup {
        background: #fff;
        border-radius: 14px;
        padding: 18px;
        box-shadow: 0 4px 20px rgba(0,0,0,.06);
    }
    .adv-mock-bar {
        display: flex; align-items: center; gap: 6px;
        margin-bottom: 14px;
    }
    .adv-mock-bar i { width: 8px; height: 8px; border-radius: 50%; display: block; }
    .adv-purple .adv-mock-bar i { background: rgba(123,92,252,.25); }
    .adv-blue .adv-mock-bar i { background: rgba(59,108,245,.25); }
    .adv-indigo .adv-mock-bar i { background: rgba(109,40,217,.25); }
    .adv-mock-bar span { font-size: 11px; font-weight: 600; margin-left: auto; }
    .adv-purple .adv-mock-bar span { color: #7B5CFC; }
    .adv-blue .adv-mock-bar span { color: #3B6CF5; }
    .adv-indigo .adv-mock-bar span { color: #6D28D9; }

    .adv-mock-row {
        display: flex; align-items: center; gap: 10px;
        padding: 10px 0;
        border-bottom: 1px solid rgba(0,0,0,.04);
    }
    .adv-mock-row:last-child { border-bottom: none; }
    .adv-mock-dot {
        width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0;
    }
    .adv-purple .adv-mock-dot { background: #E4D9FF; }
    .adv-blue .adv-mock-dot { background: #D6E4FF; }
    .adv-indigo .adv-mock-dot { background: #DDD6FE; }
    .adv-mock-lines { flex: 1; }
    .adv-mock-line { height: 6px; border-radius: 3px; margin-bottom: 5px; }
    .adv-mock-line:last-child { margin-bottom: 0; }
    .adv-purple .adv-mock-line { background: rgba(123,92,252,.1); }
    .adv-blue .adv-mock-line { background: rgba(59,108,245,.1); }
    .adv-indigo .adv-mock-line { background: rgba(109,40,217,.1); }
    .adv-mock-line.w80 { width: 80%; }
    .adv-mock-line.w60 { width: 60%; }
    .adv-mock-line.w70 { width: 70%; }
    .adv-mock-line.w50 { width: 50%; }
    .adv-mock-line.w90 { width: 90%; }

    .adv-mock-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 12px; }
    .adv-mock-tag { padding: 5px 12px; border-radius: 6px; font-size: 11px; font-weight: 600; }
    .adv-purple .adv-mock-tag { background: #E4D9FF; color: #7B5CFC; }
    .adv-blue .adv-mock-tag { background: #D6E4FF; color: #3B6CF5; }
    .adv-indigo .adv-mock-tag { background: #DDD6FE; color: #6D28D9; }

    .adv-mock-gauge { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
    .adv-gauge-track { flex: 1; height: 8px; border-radius: 4px; overflow: hidden; }
    .adv-purple .adv-gauge-track { background: #E4D9FF; }
    .adv-blue .adv-gauge-track { background: #D6E4FF; }
    .adv-indigo .adv-gauge-track { background: #DDD6FE; }
    .adv-gauge-fill { height: 100%; border-radius: 4px; }
    .adv-purple .adv-gauge-fill { background: #7B5CFC; }
    .adv-blue .adv-gauge-fill { background: #3B6CF5; }
    .adv-indigo .adv-gauge-fill { background: #6D28D9; }
    .adv-gauge-val { font-size: 13px; font-weight: 700; }
    .adv-purple .adv-gauge-val { color: #7B5CFC; }
    .adv-blue .adv-gauge-val { color: #3B6CF5; }
    .adv-indigo .adv-gauge-val { color: #6D28D9; }

    /* ====================== 产品功能 ====================== */
    .func-sec { background: var(--bg-w); }
    .func-grid {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
        gap: 16px;
    }
    .func-card {
        background: #fff;
        border: 1px solid var(--border-card);
        border-radius: var(--radius);
        padding: 28px 20px;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        transition: all .35s var(--ease-out);
        position: relative;
        overflow: hidden;
    }
    .func-card::after {
        content: '';
        position: absolute; inset: 0;
        background: var(--grad-card-hover);
        opacity: 0; transition: opacity .3s;
        pointer-events: none;
    }
    .func-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-card-hover);
        border-color: rgba(124,92,252,.12);
    }
    .func-card:hover::after { opacity: 1; }
    .func-icon {
        flex-shrink: 0;
        width: 48px; height: 48px;
        background: var(--grad-primary);
        border-radius: 12px;
        display: flex; align-items: center; justify-content: center;
        box-shadow: 0 4px 12px rgba(124,92,252,.2);
        margin-bottom: 16px;
    }
    .func-icon svg { width: 22px; height: 22px; fill: #fff; }
    .func-text h3 {
        font-size: 16px; font-weight: 700; color: var(--t-title);
        margin-bottom: 8px;
        line-height: 1.3;
    }
    .func-text p {
        font-size: 13px; color: var(--t-sub); line-height: 1.6; margin-bottom: 12px;
    }
    .func-tag {
        display: inline-flex; align-items: center; gap: 4px;
        background: linear-gradient(135deg, rgba(124,92,252,.06) 0%, rgba(79,110,247,.04) 100%);
        padding: 6px 10px; border-radius: 6px;
        font-size: 11px; color: var(--t-body); font-weight: 500; line-height: 1.4;
    }
    .func-tag svg { width: 12px; height: 12px; fill: var(--primary); flex-shrink: 0; }

    /* ====================== 场景解决方案 ====================== */
    .scene-sec { background: var(--bg-subtle); }

    /* Tab 导航 */
    .scene-tabs {
        display: flex; gap: 10px; justify-content: center;
        margin-bottom: 48px;
        flex-wrap: wrap;
    }
    .scene-tab {
        padding: 14px 28px;
        background: #fff;
        border: 2px solid var(--border-card);
        border-radius: 12px;
        font-size: 14px; font-weight: 600; color: var(--t-sub);
        cursor: pointer;
        transition: all .3s var(--ease-out);
    }
    .scene-tab:hover {
        border-color: rgba(124,92,252,.2);
        color: var(--t-title);
    }
    .scene-tab.active {
        background: var(--grad-primary);
        border-color: transparent;
        color: #fff;
        box-shadow: 0 4px 16px rgba(124,92,252,.25);
    }
    .scene-tab-num {
        display: inline-flex; align-items: center; justify-content: center;
        width: 24px; height: 24px; border-radius: 50%;
        background: rgba(124,92,252,.1);
        color: var(--primary);
        font-size: 12px; font-weight: 800;
        margin-right: 8px;
    }
    .scene-tab.active .scene-tab-num {
        background: rgba(255,255,255,.25);
        color: #fff;
    }

    /* Tab 面板 */
    .scene-panels { position: relative; }
    .scene-panel {
        display: none;
        opacity: 0;
        animation: sceneFadeIn .5s var(--ease-out) forwards;
    }
    .scene-panel.active { display: block; }
    @keyframes sceneFadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .scene-card {
        display: flex;
        background: #fff;
        border-radius: var(--radius-xl);
        overflow: hidden;
        border: 1px solid var(--border-card);
        box-shadow: 0 4px 24px rgba(0,0,0,.06);
    }
    .scene-vis {
        flex: 0 0 42%; min-height: 420px;
        position: relative; overflow: hidden;
        display: flex; align-items: center; justify-content: center;
        padding: 40px;
    }
    .scene-vis.v1 { background: linear-gradient(135deg, #F3EEFF 0%, #E0E7FF 100%); }
    .scene-vis.v2 { background: linear-gradient(135deg, #FFF0F6 0%, #FCE7F3 100%); }
    .scene-vis.v3 { background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%); }
    .scene-vis.v4 { background: linear-gradient(135deg, #FFF7ED 0%, #FFEDD5 100%); }

    .scene-info { flex: 1; padding: 44px 40px; display: flex; flex-direction: column; justify-content: center; }
    .scene-info h3 {
        font-size: 22px; font-weight: 700; color: var(--t-title);
        margin-bottom: 8px; line-height: 1.4;
    }
    .scene-info .pain-tag {
        display: inline-flex; align-items: center; gap: 6px;
        padding: 6px 14px;
        background: rgba(245,158,11,.08); color: #D97706;
        font-size: 12px; font-weight: 600;
        border-radius: 8px;
        margin-bottom: 16px;
    }
    .scene-info .pain-text {
        font-size: 14px; color: var(--t-sub); line-height: 1.75;
        margin-bottom: 20px;
        padding: 14px 16px;
        background: rgba(245,158,11,.04);
        border-left: 3px solid #F59E0B;
        border-radius: 0 8px 8px 0;
    }
    .scene-info .approach-label {
        font-size: 13px; font-weight: 700; color: var(--primary);
        margin-bottom: 8px; text-transform: uppercase; letter-spacing: .04em;
    }
    .scene-info .approach-text {
        font-size: 14px; color: var(--t-body); line-height: 1.75;
        margin-bottom: 20px;
    }
    .scene-value {
        padding: 16px 20px;
        background: rgba(124,92,252,.04);
        border-left: 4px solid var(--primary);
        border-radius: 0 12px 12px 0;
        margin-bottom: 20px;
    }
    .scene-value strong {
        font-size: 13px; font-weight: 700; color: var(--t-title);
        display: block; margin-bottom: 6px;
    }
    .scene-value p {
        font-size: 13.5px; color: var(--t-body); line-height: 1.7;
    }
    .scene-value .hl-num {
        color: var(--primary); font-weight: 800;
    }

    /* 场景内的 UI 模拟 */
    .scene-mock { width: 100%; max-width: 300px; }
    .scene-mock-panel {
        background: #fff; border-radius: 16px;
        box-shadow: 0 12px 40px rgba(124,92,252,.1);
        overflow: hidden;
    }
    .smp-bar {
        height: 36px; background: var(--grad-primary);
        display: flex; align-items: center; padding: 0 14px; gap: 5px;
    }
    .smp-bar i { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.35); display: block; }
    .smp-bar span { color: rgba(255,255,255,.85); font-size: 11px; font-weight: 600; margin-left: auto; }
    .smp-body { padding: 16px; }
    .smp-stat-row { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; margin-bottom: 12px; }
    .smp-stat { padding: 10px; border-radius: 8px; background: var(--bg-section); text-align: center; }
    .smp-stat-num { font-size: 18px; font-weight: 800; color: var(--primary); }
    .smp-stat-label { font-size: 10px; color: var(--t-sub); }
    .smp-list { display: flex; flex-direction: column; gap: 6px; }
    .smp-list-item {
        display: flex; align-items: center; gap: 8px;
        padding: 8px 10px; border-radius: 8px; background: var(--bg-subtle);
        font-size: 11px; color: var(--t-body); font-weight: 500;
    }
    .smp-list-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); flex-shrink: 0; }
    .smp-list-dot.green { background: #22C55E; }
    .smp-list-badge { margin-left: auto; padding: 2px 8px; border-radius: 4px; font-size: 9px; font-weight: 700; background: rgba(124,92,252,.1); color: var(--primary); }

    /* --- 场景2：聊天对话式 UI --- */
    .chat-mock { width: 100%; max-width: 300px; }
    .chat-panel {
        background: #fff; border-radius: 16px;
        box-shadow: 0 12px 40px rgba(219,39,119,.08);
        overflow: hidden;
    }
    .chat-bar {
        height: 36px; background: linear-gradient(135deg, #EC4899, #DB2777);
        display: flex; align-items: center; padding: 0 14px; gap: 5px;
    }
    .chat-bar i { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.35); display: block; }
    .chat-bar span { color: rgba(255,255,255,.85); font-size: 11px; font-weight: 600; margin-left: auto; }
    .chat-body { padding: 14px; display: flex; flex-direction: column; gap: 10px; }
    .chat-msg {
        max-width: 82%; padding: 10px 14px;
        border-radius: 14px; font-size: 11px; line-height: 1.6;
    }
    .chat-msg.bot {
        align-self: flex-start; background: #FDF2F8; color: #9D174D;
        border-bottom-left-radius: 4px;
    }
    .chat-msg.user {
        align-self: flex-end; background: linear-gradient(135deg, #EC4899, #DB2777); color: #fff;
        border-bottom-right-radius: 4px;
    }
    .chat-tag-row { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 4px; }
    .chat-tag {
        padding: 2px 8px; border-radius: 4px; font-size: 9px; font-weight: 600;
        background: rgba(219,39,119,.1); color: #DB2777;
    }
    .chat-input-bar {
        display: flex; align-items: center; gap: 8px;
        padding: 10px 14px; border-top: 1px solid #FCE7F3;
    }
    .chat-input-bar .ci-field {
        flex: 1; height: 28px; border-radius: 14px; background: #FDF2F8; border: none;
        padding: 0 12px; font-size: 10px; color: #9D174D;
    }
    .chat-input-bar .ci-send {
        width: 28px; height: 28px; border-radius: 50%;
        background: linear-gradient(135deg, #EC4899, #DB2777);
        display: flex; align-items: center; justify-content: center;
    }
    .chat-input-bar .ci-send svg { width: 12px; height: 12px; }

    /* --- 场景3：多智能体工作流 --- */
    .flow-mock { width: 100%; max-width: 280px; }
    .flow-panel {
        background: #fff; border-radius: 16px;
        box-shadow: 0 12px 40px rgba(16,185,129,.08);
        padding: 20px; position: relative;
    }
    .flow-title {
        font-size: 11px; font-weight: 700; color: #065F46;
        text-align: center; margin-bottom: 16px;
        padding: 4px 10px; background: #D1FAE5; border-radius: 6px;
        display: inline-block; width: 100%; box-sizing: border-box;
    }
    .flow-nodes { display: flex; flex-direction: column; gap: 6px; align-items: center; }
    .flow-node {
        display: flex; align-items: center; gap: 8px;
        padding: 10px 14px; border-radius: 10px;
        font-size: 11px; font-weight: 600;
        width: 100%; box-sizing: border-box;
        position: relative;
    }
    .flow-node.fn-input { background: #ECFDF5; color: #065F46; border: 1px solid #A7F3D0; }
    .flow-node.fn-agent { background: #F0FDF4; color: #166534; border: 1px dashed #86EFAC; }
    .flow-node.fn-output { background: #065F46; color: #fff; }
    .flow-node-icon {
        width: 24px; height: 24px; border-radius: 6px;
        display: flex; align-items: center; justify-content: center;
        font-size: 12px; flex-shrink: 0;
    }
    .flow-node.fn-input .flow-node-icon { background: #A7F3D0; }
    .flow-node.fn-agent .flow-node-icon { background: #BBF7D0; }
    .flow-node.fn-output .flow-node-icon { background: rgba(255,255,255,.2); }
    .flow-arrow {
        width: 2px; height: 12px; background: #86EFAC; margin: 0 auto;
        position: relative;
    }
    .flow-arrow::after {
        content: ''; position: absolute; bottom: -3px; left: -3px;
        border-left: 4px solid transparent; border-right: 4px solid transparent;
        border-top: 5px solid #86EFAC;
    }

    /* --- 场景4：漏斗管线仪表盘 --- */
    .funnel-mock { width: 100%; max-width: 300px; }
    .funnel-panel {
        background: #fff; border-radius: 16px;
        box-shadow: 0 12px 40px rgba(234,88,12,.08);
        overflow: hidden;
    }
    .funnel-bar {
        height: 36px; background: linear-gradient(135deg, #F97316, #EA580C);
        display: flex; align-items: center; padding: 0 14px; gap: 5px;
    }
    .funnel-bar i { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.35); display: block; }
    .funnel-bar span { color: rgba(255,255,255,.85); font-size: 11px; font-weight: 600; margin-left: auto; }
    .funnel-body { padding: 16px; }
    .funnel-stages { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
    .funnel-stage {
        display: flex; align-items: center; gap: 8px;
        padding: 8px 0; position: relative;
    }
    .funnel-stage-label { font-size: 10px; color: #9A3412; font-weight: 600; width: 54px; flex-shrink: 0; text-align: right; }
    .funnel-stage-track { flex: 1; height: 22px; background: #FFF7ED; border-radius: 6px; overflow: hidden; position: relative; }
    .funnel-stage-fill {
        height: 100%; border-radius: 6px;
        display: flex; align-items: center; justify-content: flex-end; padding-right: 8px;
        font-size: 9px; font-weight: 700; color: #fff;
    }
    .funnel-stage-fill.f1 { width: 100%; background: linear-gradient(90deg, #FDBA74, #F97316); }
    .funnel-stage-fill.f2 { width: 72%; background: linear-gradient(90deg, #FB923C, #EA580C); }
    .funnel-stage-fill.f3 { width: 45%; background: linear-gradient(90deg, #F97316, #DC2626); }
    .funnel-stage-fill.f4 { width: 28%; background: linear-gradient(90deg, #EA580C, #B91C1C); }
    .funnel-kpi-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 6px; }
    .funnel-kpi {
        text-align: center; padding: 8px 4px; border-radius: 8px;
        background: #FFF7ED;
    }
    .funnel-kpi-num { font-size: 16px; font-weight: 800; color: #EA580C; }
    .funnel-kpi-label { font-size: 9px; color: #9A3412; margin-top: 2px; }

    /* ====================== 客户案例 ====================== */
    .case-sec { background: var(--bg-w); }
    .case-grid {
        display: grid; grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .case-card {
        background: #fff;
        border: 1px solid var(--border-card);
        border-radius: var(--radius);
        padding: 36px 32px;
        transition: all .35s var(--ease-out);
        position: relative;
        overflow: hidden;
    }
    .case-card::before {
        content: '';
        position: absolute; top: 0; left: 0; right: 0; height: 4px;
        background: var(--grad-primary);
        transform: scaleX(0); transform-origin: left;
        transition: transform .4s var(--ease-out);
    }
    .case-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-card-hover);
        border-color: rgba(124,92,252,.12);
    }
    .case-card:hover::before { transform: scaleX(1); }

    .case-badge {
        display: inline-flex; align-items: center; gap: 6px;
        padding: 5px 12px;
        background: var(--bg-section);
        border-radius: 8px;
        font-size: 11px; font-weight: 700; color: var(--primary);
        margin-bottom: 14px;
        text-transform: uppercase; letter-spacing: .04em;
    }
    .case-title {
        font-size: 20px; font-weight: 700; color: var(--t-title);
        margin-bottom: 12px; line-height: 1.3;
    }
    .case-desc {
        font-size: 14px; color: var(--t-sub); line-height: 1.75;
        margin-bottom: 20px;
    }
    .case-result {
        padding: 16px 20px;
        background: var(--bg-section);
        border-radius: 12px;
        border-left: 4px solid var(--primary);
    }
    .case-result strong {
        font-size: 13px; font-weight: 700; color: var(--t-title);
        display: block; margin-bottom: 6px;
    }
    .case-result p {
        font-size: 13.5px; color: var(--t-body); line-height: 1.7;
    }
    .case-result .hl-num {
        color: var(--primary); font-weight: 800;
    }

    /* Logo 信任墙 */
    .trust-bar {
        padding: 48px 0;
        background: var(--bg-w);
        border-top: 1px solid rgba(226,232,240,.5);
        border-bottom: 1px solid rgba(226,232,240,.5);
        overflow: hidden;
        position: relative;
    }
    .trust-bar::before, .trust-bar::after {
        content: '';
        position: absolute; top: 0; width: 120px; height: 100%;
        z-index: 2;
    }
    .trust-bar::before { left: 0; background: linear-gradient(90deg, #fff 0%, transparent 100%); }
    .trust-bar::after { right: 0; background: linear-gradient(90deg, transparent 0%, #fff 100%); }
    .trust-bar h4 {
        text-align: center; font-size: 24px; color:#233863；
        font-weight: 500; margin-bottom: 28px; letter-spacing: .05em;
        text-transform: uppercase;
    }
    .trust-track {
        display: flex; gap: 40px;
        animation: trustScroll 30s linear infinite;
        width: max-content;
    }
    .trust-item {
        flex-shrink: 0;
        min-width: 180px;
        height: 80px;
        padding: 0 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: #fff;
        border-radius: 14px;
        border: 1px solid rgba(226,232,240,.6);
        font-size: 16px; font-weight: 600; color: var(--t-sub);
        white-space: nowrap;
        box-shadow: 0 2px 8px rgba(0,0,0,.04);
        transition: all .3s;
    }
    .trust-item:hover {
        background: #fff;
        border-color: rgba(124,92,252,.2);
        box-shadow: 0 4px 16px rgba(124,92,252,.1);
        color: var(--t-title);
    }
    @keyframes trustScroll {
        0% { transform: translateX(0); }
        100% { transform: translateX(-50%); }
    }

    /* ====================== CTA 底部留资 ====================== */
    .cta-sec {
        padding: 100px 0;
        background: var(--grad-primary);
        position: relative;
        overflow: hidden;
    }
    .cta-sec::before {
        content: '';
        position: absolute; inset: 0;
        background:
            radial-gradient(ellipse 50% 80% at 20% 50%, rgba(255,255,255,.08) 0%, transparent 70%),
            radial-gradient(ellipse 40% 60% at 80% 50%, rgba(255,255,255,.06) 0%, transparent 70%);
    }
    .cta-inner {
        position: relative; z-index: 1;
        text-align: center;
        max-width: 700px; margin: 0 auto;
    }
    .cta-inner h2 {
        font-size: 36px; font-weight: 800; color: #fff;
        line-height: 1.3; margin-bottom: 16px;
        letter-spacing: -.02em;
    }
    .cta-inner p {
        font-size: 16px; color: rgba(255,255,255,.8); line-height: 1.7;
        margin-bottom: 40px;
    }
    .cta-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
    .btn-white {
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        height: 52px; padding: 0 32px;
        background: #fff;
        color: var(--primary); font-size: 15px; font-weight: 700;
        border: none; border-radius: 14px; cursor: pointer;
        text-decoration: none;
        box-shadow: 0 4px 16px rgba(0,0,0,.1);
        transition: all .3s var(--ease-out);
    }
    .btn-white:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 28px rgba(0,0,0,.15);
    }
    .btn-outline-w {
        display: inline-flex; align-items: center; justify-content: center; gap: 8px;
        height: 52px; padding: 0 28px;
        background: transparent;
        color: #fff; font-size: 15px; font-weight: 600;
        border: 1.5px solid rgba(255,255,255,.35); border-radius: 14px;
        cursor: pointer; text-decoration: none;
        transition: all .3s var(--ease-out);
    }
    .btn-outline-w:hover {
        background: rgba(255,255,255,.1);
        border-color: rgba(255,255,255,.6);
        transform: translateY(-2px);
    }


    /* ====================== 响应式 ====================== */
    @media (max-width: 1024px) {
        .hero .sa-w { flex-direction: column; gap: 40px; text-align: center; }
        .hero-left { max-width: 100%; }
        .hero-left h1 { font-size: 36px; }
        .hero-btns { justify-content: center; }
        .hero-trust { justify-content: center; }
        .hero-right { min-height: 400px; width: 100%; max-width: 420px; margin: 0 auto; }
        .hero-dashboard { position: relative; top: 0; left: auto; width: 100%; }
        .hero-float { display: none; }
        .adv-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
        .func-grid { grid-template-columns: repeat(2, 1fr); }
        .scene-card { flex-direction: column; }
        .scene-vis { min-height: 260px; }
        .case-grid { grid-template-columns: 1fr; }
        .sec-title { font-size: 32px; }
        .scene-tabs { gap: 6px; }
        .scene-tab { padding: 10px 18px; font-size: 13px; }
    }

    @media (max-width: 640px) {
        .sa-w { padding: 0 20px; }
        .sa-section { padding: 64px 0; }
        .hero { padding: 120px 0 60px; min-height: auto; }
        .hero-left h1 { font-size: 28px; }
        .hero-left .hero-sub { font-size: 15px; }
        .sec-title { font-size: 26px; }
        .sec-desc { font-size: 15px; }
        .intro-wrap { padding: 36px 24px; border-radius: var(--radius); }
        .intro-wrap .sec-title { font-size: 24px; white-space: normal; }
        .func-grid { grid-template-columns: 1fr; }
        .scene-tabs { flex-direction: column; align-items: stretch; }
        .scene-info { padding: 28px 20px; }
        .cta-inner h2 { font-size: 26px; }
        .cta-btns { flex-direction: column; align-items: center; }
        .sec-header-center { margin-bottom: 40px; }
        .hero-trust { flex-wrap: wrap; gap: 20px; }
    }