/* ===== 设计令牌：浅色 + 蓝紫主色 ===== */
:root{
  --indigo:#6366F1;
  --indigo-d:#4F46E5;
  --violet:#8B5CF6;
  --violet-d:#7C3AED;
  --cyan:#06B6D4;
  --grad:linear-gradient(135deg,#6366F1 0%,#8B5CF6 100%);
  --grad-soft:linear-gradient(135deg,#EEF2FF 0%,#F5F3FF 100%);

  --bg:#FFFFFF;
  --mist:#F8F9FC;
  --mist-2:#F3F4F8;
  --ink:#0F172A;
  --ink-2:#334155;
  --ink-3:#64748B;
  --muted:#94A3B8;
  --line:#E8EAF0;
  --line-2:#EEF0F4;

  --card:#FFFFFF;
  --card-soft:#F8F9FC;
  --shadow-xs:0 1px 2px rgba(15,23,42,.04);
  --shadow-sm:0 2px 8px -2px rgba(15,23,42,.06),0 4px 16px -4px rgba(15,23,42,.05);
  --shadow:0 8px 30px -8px rgba(79,70,229,.12),0 2px 8px -2px rgba(15,23,42,.06);
  --shadow-lg:0 24px 60px -16px rgba(79,70,229,.18);

  --sans:"Plus Jakarta Sans","Noto Sans SC",-apple-system,"Segoe UI",system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,monospace;
  --maxw:1180px;
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  font-size:15.5px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--sans);font-weight:700;line-height:1.25;letter-spacing:-.015em;color:var(--ink)}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* ===== 导航 ===== */
.nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.8);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.nav.scrolled{box-shadow:var(--shadow-sm)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700}
.brand-mark{width:30px;height:30px}
.brand-mark svg{width:100%;height:100%}
.brand-name{font-size:18px;letter-spacing:-.01em}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{padding:8px 14px;font-size:14.5px;color:var(--ink-2);font-weight:500;border-radius:8px;transition:all .2s}
.nav-links a:hover{color:var(--indigo);background:var(--mist)}
.nav-links .btn-nav{margin-left:8px;background:var(--ink);color:#fff;padding:9px 18px;font-weight:600}
.nav-links .btn-nav:hover{background:var(--indigo);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== 按钮 ===== */
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:10px;font-weight:600;font-size:15px;background:var(--ink);color:#fff;transition:all .25s;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--indigo);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-primary .arr{transition:transform .25s}
.btn-primary:hover .arr{transform:translateX(4px)}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:10px;font-weight:600;font-size:15px;background:var(--bg);color:var(--ink);border:1px solid var(--line);transition:all .25s}
.btn-secondary:hover{border-color:var(--indigo);color:var(--indigo);background:var(--mist)}

/* ===== Hero ===== */
.hero{position:relative;padding:80px 0 100px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center;position:relative;z-index:2}
.badge-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:100px;font-size:13px;font-weight:500;background:var(--mist);border:1px solid var(--line);color:var(--ink-2);margin-bottom:24px}
.pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--indigo);box-shadow:0 0 0 0 rgba(99,102,241,.5);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(99,102,241,.5)}70%{box-shadow:0 0 0 8px rgba(99,102,241,0)}100%{box-shadow:0 0 0 0 rgba(99,102,241,0)}}
.hero-title{font-size:clamp(34px,5vw,56px);font-weight:800;line-height:1.1;letter-spacing:-.025em;margin-bottom:22px}
.hero-sub{font-size:17px;color:var(--ink-3);line-height:1.85;margin-bottom:32px;max-width:540px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:40px}
.hero-trust{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.trust-item{padding:0 22px;display:flex;flex-direction:column;line-height:1.2}
.trust-item:first-child{padding-left:0}
.trust-item strong{font-size:24px;font-weight:800;color:var(--ink);font-family:var(--sans)}
.trust-item span{font-size:12.5px;color:var(--muted);margin-top:2px}
.trust-divider{width:1px;height:32px;background:var(--line)}

/* Hero 视觉：组合仪表盘 */
.hero-visual{position:relative}
.hv-main{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.hv-head{display:flex;align-items:center;gap:8px;padding:14px 18px;border-bottom:1px solid var(--line);background:var(--mist)}
.hv-dot{width:11px;height:11px;border-radius:50%}
.hv-dot.r{background:#FF5F57}.hv-dot.y{background:#FEBC2E}.hv-dot.g{background:#28C840}
.hv-title{margin-left:10px;font-size:12.5px;color:var(--ink-3);font-weight:500;font-family:var(--mono)}
.hv-body{padding:24px}
.hv-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:22px}
.hv-kpi{background:var(--card-soft);border:1px solid var(--line-2);border-radius:var(--radius-sm);padding:16px}
.hv-kpi span{display:block;font-size:11.5px;color:var(--muted);margin-bottom:6px}
.hv-kpi b{display:block;font-size:22px;font-weight:800;color:var(--ink);margin-bottom:4px}
.hv-kpi i{font-size:12px;font-weight:600;font-style:normal;color:#10B981}
.hv-chart{background:var(--card-soft);border:1px solid var(--line-2);border-radius:var(--radius-sm);padding:18px}
.hv-chart-title{font-size:12.5px;color:var(--ink-3);font-weight:600;margin-bottom:16px}
.hv-bars{display:flex;align-items:flex-end;gap:8px;height:90px}
.hv-bars span{flex:1;background:var(--grad);border-radius:5px 5px 0 0;height:var(--h);opacity:.85;animation:barRise 1s ease-out backwards}
.hv-bars span:nth-child(1){animation-delay:.1s}.hv-bars span:nth-child(2){animation-delay:.2s}.hv-bars span:nth-child(3){animation-delay:.3s}.hv-bars span:nth-child(4){animation-delay:.4s}.hv-bars span:nth-child(5){animation-delay:.5s}.hv-bars span:nth-child(6){animation-delay:.6s}.hv-bars span:nth-child(7){animation-delay:.7s}.hv-bars span:nth-child(8){animation-delay:.8s}
@keyframes barRise{from{height:0;opacity:0}}

.hv-float{position:absolute;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px 18px;display:flex;align-items:center;gap:12px;animation:floatY 4s ease-in-out infinite}
.hv-float-1{top:30px;left:-30px}
.hv-float-2{bottom:30px;right:-30px;animation-delay:-2s}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.hf-ico{width:38px;height:38px;border-radius:10px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.hf-ico.green{background:linear-gradient(135deg,#10B981,#06B6D4)}
.hf-ico svg{width:20px;height:20px}
.hv-float b{display:block;font-size:13.5px;color:var(--ink)}
.hv-float span{display:block;font-size:11.5px;color:var(--muted)}

/* Hero 背景装饰 */
.hero-bg-deco{position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.grid-overlay{position:absolute;inset:0;background-image:linear-gradient(var(--line-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-2) 1px,transparent 1px);background-size:48px 48px;mask-image:radial-gradient(ellipse 60% 50% at 70% 30%,#000,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 60% 50% at 70% 30%,#000,transparent 75%)}
.blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.4}
.blob-1{width:420px;height:420px;background:#A5B4FC;top:-120px;right:-80px}
.blob-2{width:380px;height:380px;background:#C4B5FD;bottom:-100px;left:10%;opacity:.3}

/* ===== 通用 Section ===== */
.section{padding:100px 0}
.section-sm{padding:70px 0 90px}
.section-mist{background:var(--mist)}
.section-ink{background:#0B1120;color:rgba(255,255,255,.78);position:relative;overflow:hidden}
.section-ink::before{content:"";position:absolute;top:-40%;right:-10%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(99,102,241,.25),transparent 60%);pointer-events:none}
.section-head{max-width:720px;margin:0 auto 56px}
.eyebrow{display:inline-block;font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.18em;color:var(--indigo);margin-bottom:14px;text-transform:uppercase}
.eyebrow.center{display:block;text-align:center}
.eyebrow.eb-light{color:#A5B4FC}
.section-title{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.2}
.section-title.center{text-align:center}
.section-title.light{color:#fff}
.section-lead{font-size:16.5px;color:var(--ink-3);line-height:1.85}
.section-lead.center{text-align:center;margin:0 auto;max-width:600px}
.section-lead.light{color:rgba(255,255,255,.65)}
.why-tag{display:block;text-align:center;margin:8px auto 6px;font-size:14px;font-weight:600;color:var(--violet)}

/* ===== 已接入生态 strip ===== */
.logos-strip{display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:64px}
.ls-label{font-size:12.5px;color:var(--muted);font-weight:600;letter-spacing:.05em;font-family:var(--mono)}
.ls-items{display:flex;gap:10px;flex-wrap:wrap}
.ls-item{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--ink-2);padding:6px 14px 6px 6px;background:var(--card-soft);border:1px solid var(--line);border-radius:100px;transition:all .2s}
.brand-logo{width:24px;height:24px;border-radius:50%;background:var(--bc);display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:0 1px 3px rgba(0,0,0,.12)}
.brand-logo svg{width:14px;height:14px;fill:#fff}
.ls-item:hover{border-color:var(--indigo);color:var(--indigo);transform:translateY(-2px)}

/* ===== 定位 ===== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-bottom:56px;align-items:center}
.about-title{font-size:clamp(30px,4vw,44px);font-weight:800;line-height:1.18}
.about-text p{font-size:17px;color:var(--ink-3);line-height:2}
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.value-card{padding:28px 24px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);transition:all .3s}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--indigo)}
.vc-icon{width:44px;height:44px;background:var(--bc,var(--indigo));border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:18px;box-shadow:0 4px 12px -3px var(--bc,rgba(99,102,241,.4));transition:transform .3s}
.vc-icon svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.value-card:hover .vc-icon{transform:translateY(-3px) scale(1.06)}
.value-card h3{font-size:17.5px;margin-bottom:10px}
.value-card p{font-size:13.5px;color:var(--ink-3);line-height:1.8}

/* ===== 能力地图 ===== */
.blocks{display:flex;flex-direction:column;gap:36px}
.block{position:relative}
.block-head{display:flex;align-items:center;gap:14px;margin-bottom:22px;flex-wrap:wrap}
.block-tag{font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.08em;color:#fff;padding:4px 10px;border-radius:6px;text-transform:uppercase}
.block-a .block-tag{background:#6366F1}
.block-b .block-tag{background:#06B6D4}
.block-c .block-tag{background:#8B5CF6}
.block-head h3{font-size:20px;margin:0}
.block-desc{font-size:13.5px;color:var(--muted);margin-left:auto;font-style:italic}
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cap-grid-2{grid-template-columns:repeat(2,1fr)}
.cap-card{position:relative;padding:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);transition:all .3s;display:block}
.cap-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--indigo)}
.cap-card.featured{background:var(--grad-soft);border-color:#C7D2FE}
.cap-flag{position:absolute;top:12px;right:12px;font-size:10.5px;font-weight:700;color:#fff;background:var(--grad);padding:3px 9px;border-radius:6px;letter-spacing:.03em}
.cap-no{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--indigo);display:block;margin-bottom:8px}
.cap-card h4{font-size:16.5px;margin-bottom:8px}
.cap-card p{font-size:13px;color:var(--ink-3);line-height:1.75}

/* ===== 板块 A 详解（CSS 模拟产品界面） ===== */
.case-stack{display:flex;flex-direction:column;gap:64px}
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.case-row.reverse .case-ui{order:2}
.case-info{padding:0 8px}
.case-no{font-family:var(--mono);font-size:13px;font-weight:600;color:var(--indigo);letter-spacing:.05em;display:block;margin-bottom:10px}
.case-info h3{font-size:26px;margin-bottom:14px}
.case-info>p{font-size:16px;color:var(--ink-2);margin-bottom:24px;line-height:1.9}
.case-meta{display:flex;flex-direction:column;gap:14px}
.case-meta.compact{gap:10px}
.cm{display:flex;gap:12px;align-items:flex-start}
.cm-tag{font-size:11px;font-weight:700;padding:3px 9px;border-radius:6px;background:#FEF3C7;color:#B45309;letter-spacing:.03em;flex-shrink:0;margin-top:2px}
.cm-tag-2{background:#DCFCE7;color:#15803D}
.cm p{font-size:14px;color:var(--ink-3);line-height:1.7}

/* 通用 UI 窗口 */
.ui-window{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.ui-bar{display:flex;align-items:center;gap:7px;padding:13px 16px;background:var(--mist);border-bottom:1px solid var(--line)}
.ub{width:11px;height:11px;border-radius:50%;background:var(--line-2)}
.ub.d{background:#FF5F57}
.ub-title{margin-left:8px;font-size:12px;color:var(--ink-3);font-family:var(--mono)}

/* 案例2: 小红书笔记 */
.note-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;max-width:340px;margin:0 auto}
.note-cover{position:relative;overflow:hidden;background:var(--mist);border-bottom:1px solid var(--line)}
.note-cover img{width:100%;height:auto;display:block}
.note-card:hover .note-cover img{transform:scale(1.02)}
.nc-badge{position:absolute;top:12px;left:12px;font-size:11px;font-weight:700;background:rgba(255,255,255,.95);color:#DC2626;padding:4px 10px;border-radius:100px;backdrop-filter:blur(4px)}
.note-content{padding:16px}
.note-title{font-size:15.5px;font-weight:700;margin-bottom:8px;line-height:1.4}
.note-text{font-size:13px;color:var(--ink-3);line-height:1.7;margin-bottom:12px}
.note-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:14px}
.note-tags span{font-size:11.5px;color:var(--indigo);background:var(--mist);padding:3px 9px;border-radius:6px}
.note-foot{display:flex;gap:16px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}

/* 案例3: 数据看板 */
.ui-dash .dash-body{padding:22px}
.dash-kpis{display:flex;flex-direction:column;gap:14px;margin-bottom:22px}
.dk{display:grid;grid-template-columns:90px 50px 1fr;align-items:center;gap:12px;font-size:13px}
.dk b{font-family:var(--mono);color:#10B981;font-weight:700}
.dk i{display:block;height:8px;border-radius:4px;background:var(--grad);width:var(--w)}
.dash-chart{background:var(--card-soft);border:1px solid var(--line-2);border-radius:var(--radius-sm);padding:16px}
.dc-label{font-size:12px;color:var(--ink-3);font-weight:600;margin-bottom:14px;font-family:var(--mono)}
.dc-bars{display:flex;align-items:flex-end;gap:8px;height:80px}
.dc-bars span{flex:1;background:var(--grad);border-radius:5px 5px 0 0;height:var(--h);opacity:.85}

/* 案例1: 实拍图 → 商业图片 before/after */
.ui-ba .ba-window{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.ba-bar{display:flex;align-items:center;gap:7px;padding:13px 16px;background:var(--mist);border-bottom:1px solid var(--line)}
.ba-split{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;padding:24px;align-items:center}
.ba-side{margin:0}
.ba-img{border-radius:var(--radius);overflow:hidden;background:var(--mist);border:1px solid var(--line);aspect-ratio:3/4;box-shadow:var(--shadow-sm)}
.ba-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.ba-side:hover .ba-img img{transform:scale(1.04)}
.ba-side figcaption{display:flex;flex-direction:column;align-items:center;gap:6px;margin-top:14px;text-align:center}
.ba-tag{font-size:11.5px;font-weight:700;padding:4px 11px;border-radius:100px;letter-spacing:.03em}
.ba-tag-in{background:#FEF3C7;color:#B45309}
.ba-tag-out{background:var(--grad);color:#fff}
.ba-desc{font-size:12.5px;color:var(--muted)}
.ba-arrow{display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--indigo);font-weight:600;font-size:12px}
.ba-arrow svg{width:30px;height:30px;background:var(--grad-soft);border-radius:50%;padding:6px;animation:floatX 2.4s ease-in-out infinite}
@keyframes floatX{0%,100%{transform:translateX(0)}50%{transform:translateX(5px)}}

/* ===== 自动化 ===== */
.auto-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:32px}
.auto-card{position:relative;padding:32px 28px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);transition:all .3s}
.auto-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--indigo)}
.auto-card.featured{border-color:var(--indigo);box-shadow:var(--shadow);background:linear-gradient(180deg,#EEF2FF,#FFFFFF)}
.ac-flag{position:absolute;top:-1px;right:20px;transform:translateY(-50%);font-size:10.5px;font-weight:700;color:#fff;background:var(--grad);padding:4px 10px;border-radius:6px}
.ac-icon{width:44px;height:44px;color:var(--indigo);margin-bottom:18px;padding:9px;background:var(--grad-soft);border-radius:11px}
.ac-icon svg{width:100%;height:100%}
.auto-card.featured .ac-icon{background:var(--grad);color:#fff}
.ac-no{font-family:var(--mono);font-size:12.5px;font-weight:600;color:var(--indigo);display:block;margin-bottom:6px}
.auto-card h3{font-size:19px;margin-bottom:4px}
.ac-sub{font-size:13px;color:var(--violet);font-weight:600;margin-bottom:12px}
.auto-card>p{font-size:14px;color:var(--ink-3);margin-bottom:18px;line-height:1.8}
.ac-chips{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:20px}
.ac-chips span{font-size:11.5px;color:var(--ink-2);background:var(--mist);padding:4px 10px;border-radius:6px;border:1px solid var(--line)}
.ac-coop{font-size:13px;color:var(--ink-3);padding-top:16px;border-top:1px solid var(--line);line-height:1.7}
.ac-coop span{display:block;font-size:11px;font-weight:700;color:var(--indigo);letter-spacing:.05em;margin-bottom:4px;font-family:var(--mono)}

.callout{display:flex;gap:18px;align-items:flex-start;padding:28px 32px;background:linear-gradient(135deg,#0F172A,#1E293B);color:rgba(255,255,255,.8);border-radius:var(--radius)}
.co-ico{width:42px;height:42px;color:#A5B4FC;flex-shrink:0;background:rgba(99,102,241,.15);border-radius:11px;padding:9px}
.co-ico svg{width:100%;height:100%}
.callout h4{font-size:18px;margin-bottom:6px;color:#fff}
.callout p{font-size:14px;color:rgba(255,255,255,.65);line-height:1.85}

/* ===== 数据集成 ===== */
.data-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:0;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
.data-media{position:relative;min-height:480px;background:var(--mist)}
.data-media img{width:100%;height:100%;object-fit:cover;transition:transform .8s}
.data-media:hover img{transform:scale(1.04)}
.dm-caption{position:absolute;left:16px;bottom:16px;font-size:12.5px;color:#fff;background:rgba(15,23,42,.8);padding:8px 14px;border-radius:8px;backdrop-filter:blur(4px)}
.data-cards{display:flex;flex-direction:column}
.data-card{padding:36px 34px;flex:1;border-bottom:1px solid var(--line)}
.data-card:last-child{border-bottom:none}
.dc-head{display:flex;align-items:center;gap:14px;margin-bottom:12px}
.dc-no{width:36px;height:36px;border-radius:10px;background:var(--grad);color:#fff;font-family:var(--mono);font-weight:700;font-size:14px;display:flex;align-items:center;justify-content:center}
.dc-head h3{font-size:19px;margin:0}
.dc-desc{font-size:14.5px;color:var(--ink-3);margin-bottom:20px;line-height:1.8}
.dc-feats{display:flex;flex-direction:column;gap:14px}
.df{display:flex;gap:12px;align-items:flex-start;font-size:13.5px;color:var(--ink-2);line-height:1.65}
.df-ico{width:24px;height:24px;color:var(--indigo);flex-shrink:0;margin-top:2px}
.df-ico svg{width:100%;height:100%}
.df b{color:var(--ink);margin-right:5px}
.eco-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.eco-item{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;padding:6px 14px 6px 6px;background:var(--mist);border:1px solid var(--line);border-radius:100px;color:var(--ink-2);transition:all .2s}
.eco-item:hover{border-color:var(--indigo);color:var(--indigo);transform:translateY(-2px)}

/* ===== 核心优势（深色） ===== */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);overflow:hidden;position:relative;z-index:1}
.why-card{padding:36px 30px;border-right:1px solid rgba(255,255,255,.1);position:relative;transition:background .35s}
.why-card:last-child{border-right:none}
.why-card:hover{background:rgba(255,255,255,.03)}
.why-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .4s}
.why-card:hover::before{transform:scaleX(1)}
.wc-no{font-size:34px;font-weight:800;line-height:1;color:var(--violet);opacity:.5;display:block;margin-bottom:14px}
.why-card h3{font-size:17px;margin-bottom:10px;color:#fff}
.why-card p{font-size:13.5px;color:rgba(255,255,255,.6);line-height:1.8}

/* ===== 合作 ===== */
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:44px}
.partner-card{padding:34px 26px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);text-align:center;transition:all .3s}
.partner-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--indigo)}
.pc-letter{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;margin-bottom:16px;border-radius:14px;font-weight:800;font-size:22px;color:#fff;background:var(--grad);transition:transform .3s}
.partner-card:hover .pc-letter{transform:scale(1.08) rotate(-4deg)}
.partner-card h3{font-size:17px;margin-bottom:8px}
.partner-card p{font-size:13px;color:var(--ink-3);line-height:1.75}

.contact-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
.cb-head{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:36px 40px;background:var(--grad);color:#fff;flex-wrap:wrap}
.cb-head h3{color:#fff;font-size:24px;margin-bottom:4px}
.cb-slogan{font-size:14.5px;color:rgba(255,255,255,.85)}
.cb-head .btn-primary{background:#fff;color:var(--indigo-d)}
.cb-head .btn-primary:hover{background:var(--ink);color:#fff}
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.contact-item{padding:30px 24px;text-align:center;border-right:1px solid var(--line)}
.contact-item:last-child{border-right:none}
.ci-ico{width:34px;height:34px;color:var(--indigo);margin:0 auto 12px;display:block}
.ci-ico svg{width:100%;height:100%}
.ci-label{display:block;font-size:11px;color:var(--muted);letter-spacing:.08em;margin-bottom:6px;text-transform:uppercase;font-family:var(--mono)}
.ci-value{font-size:14.5px;font-weight:600;color:var(--ink)}

/* ===== Footer ===== */
.footer{background:#0B1120;color:rgba(255,255,255,.5);padding:60px 0 28px}
.footer-inner{display:flex;justify-content:space-between;gap:64px;flex-wrap:wrap;margin-bottom:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .brand{margin-bottom:14px}
.footer-brand .brand-name{color:#fff}
.footer-brand p{font-size:13.5px;color:rgba(255,255,255,.4);line-height:1.85}
.footer-cols{display:flex;gap:64px}
.footer-col h5{font-size:13px;font-weight:700;margin-bottom:16px;color:#fff}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.45);margin-bottom:10px;transition:color .2s}
.footer-col a:hover{color:var(--indigo)}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.35)}

/* ===== 滚动揭示 ===== */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.visible{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:50px}
  .hero-visual{max-width:480px;margin:0 auto}
  .hv-float-1{left:0}.hv-float-2{right:0}
  .about-grid{grid-template-columns:1fr;gap:24px}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .cap-grid,.cap-grid-2{grid-template-columns:repeat(2,1fr)}
  .auto-grid{grid-template-columns:1fr}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .why-card:nth-child(2){border-right:none}
  .why-card:nth-child(1),.why-card:nth-child(2){border-bottom:1px solid rgba(255,255,255,.1)}
  .case-row{grid-template-columns:1fr;gap:36px}
  .case-row.reverse .case-ui{order:0}
  .data-layout{grid-template-columns:1fr}
  .data-media{min-height:280px}
  .partner-grid{grid-template-columns:repeat(2,1fr)}
  .footer-cols{gap:40px}
}
@media(max-width:680px){
  .container{padding:0 18px}
  .nav-links{position:fixed;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);padding:10px 18px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);transform:translateY(-150%);transition:transform .35s}
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:13px 6px;border-bottom:1px solid var(--line);border-radius:0}
  .nav-links a:hover{background:none}
  .nav-links .btn-nav{margin:12px 0 0;text-align:center;border-radius:10px;border-bottom:none}
  .nav-toggle{display:flex}
  .section{padding:64px 0}
  .section-head{margin-bottom:40px}
  .value-grid,.cap-grid,.cap-grid-2,.why-grid,.partner-grid{grid-template-columns:1fr}
  .block-desc{margin-left:0;width:100%}
  .hero{padding:48px 0 70px}
  .hero-trust{gap:0}
  .trust-item{padding:0 14px}
  .trust-item strong{font-size:20px}
  .hv-float{display:none}
  .ba-split{grid-template-columns:1fr;gap:14px}
  .dash-kpis .dk{grid-template-columns:80px 44px 1fr}
  .contact-grid{grid-template-columns:1fr 1fr}
  .contact-item{padding:24px 14px;border-bottom:1px solid var(--line)}
  .contact-item:nth-child(2){border-right:none}
  .contact-item:nth-child(3),.contact-item:nth-child(4){border-bottom:none}
  .cb-head{padding:28px 24px}
  .footer-inner{flex-direction:column;gap:28px}
  .footer-cols{flex-wrap:wrap;gap:32px}
  .footer-bottom{flex-direction:column}
  .case-info{padding:0}
}