/* ==========================================================
   智审 · AI 赋能费用报销审核 —— 视觉系统
   白 / 浅灰交替分区 · 大字标题 · 玉绿—靛蓝—紫 AI 渐变
   ========================================================== */
:root{
  --ink:#1d1d1f; --ink-2:#424245; --mute:#6e6e73; --line:#d2d2d7; --line-2:#e8e8ed;
  --bg:#fff; --bg-2:#f5f5f7; --dark:#000; --dark-2:#161617; --dark-3:#1d1d1f;
  --jade:#0e9f8a; --jade-l:#2dd4bf; --indigo:#4f6bff; --violet:#9b5cff;
  --amber:#ff9f0a; --red:#ff3b30; --green:#28c76f;
  --grad:linear-gradient(90deg,#14b8a6 0%,#4f6bff 52%,#a855f7 100%);
  --grad-warm:linear-gradient(90deg,#ff9f0a,#ff375f);
  --r-xl:30px; --r-l:22px; --r-m:16px; --r-s:10px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1); --spring:cubic-bezier(.34,1.56,.64,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.5;
  -webkit-font-smoothing:antialiased;letter-spacing:.01em;overflow-x:clip}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
img,svg{display:block}
.wrap{width:min(1120px,92vw);margin:0 auto}
.wrap-s{width:min(880px,92vw);margin:0 auto}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.warm-text{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}
.mono{font-family:var(--mono)}

/* ---------- 导航 ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;height:48px;
  background:rgba(250,250,252,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,.06);transition:background .4s}
.nav.dark{background:rgba(22,22,23,.72);border-color:rgba(255,255,255,.08);color:#f5f5f7}
.nav .wrap{height:100%;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:8px;font-weight:600;font-size:15px;letter-spacing:.04em}
.brand-mark{width:22px;height:22px;border-radius:7px;background:var(--grad);position:relative;overflow:hidden}
.brand-mark::after{content:"";position:absolute;inset:5px 5px auto 5px;height:2px;border-radius:2px;background:#fff;
  box-shadow:0 4px 0 #fff,0 8px 0 rgba(255,255,255,.6);animation:markScan 3.2s var(--ease) infinite}
@keyframes markScan{0%,100%{transform:translateY(0)}50%{transform:translateY(3px)}}
.nav-links{display:flex;gap:22px;margin-left:auto;font-size:12.5px;opacity:.82}
.nav-links a{transition:opacity .2s}.nav-links a:hover{opacity:1;color:var(--jade)}
.nav.dark .nav-links a:hover{color:var(--jade-l)}
.nav-cta{font-size:12px;padding:5px 13px;border-radius:99px;background:var(--ink);color:#fff;font-weight:500}
.nav.dark .nav-cta{background:#f5f5f7;color:#000}
.nav-progress{position:absolute;left:0;bottom:-1px;height:2px;width:0;background:var(--grad);transition:width .1s linear}

/* ---------- 通用分区 ---------- */
section{position:relative}
.sec{padding:140px 0}
.sec.alt{background:var(--bg-2)}
.sec.dark{background:var(--dark);color:#f5f5f7}
.eyebrow{font-size:17px;font-weight:600;color:var(--jade);margin-bottom:12px;letter-spacing:.06em}
.dark .eyebrow{color:var(--jade-l)}
.h1{font-size:clamp(44px,7.4vw,96px);font-weight:700;line-height:1.04;letter-spacing:-.015em}
.h2{font-size:clamp(34px,5.2vw,64px);font-weight:700;line-height:1.08;letter-spacing:-.01em}
.h3{font-size:clamp(24px,3vw,34px);font-weight:700;line-height:1.18}
.lead{font-size:clamp(18px,2vw,23px);color:var(--mute);line-height:1.55;font-weight:500;max-width:760px}
.dark .lead{color:#a1a1a6}
.center{text-align:center}.center .lead{margin-left:auto;margin-right:auto}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:99px;font-size:17px;font-weight:500;
  transition:transform .3s var(--spring),background .3s,box-shadow .3s}
.btn:hover{transform:scale(1.04)}
.btn-primary{background:var(--jade);color:#fff;box-shadow:0 8px 24px -10px rgba(14,159,138,.7)}
.btn-primary:hover{background:#0b8a78}
.btn-ghost{color:var(--jade)}.btn-ghost::after{content:"›";font-size:22px;line-height:0;transition:transform .3s}
.btn-ghost:hover::after{transform:translateX(4px)}
.dark .btn-ghost{color:var(--jade-l)}
.btn-light{background:#f5f5f7;color:#000}

/* 滚动显现 */
.rv{opacity:0;transform:translateY(40px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.1s}.rv.d2{transition-delay:.2s}.rv.d3{transition-delay:.3s}.rv.d4{transition-delay:.4s}
.rv-scale{opacity:0;transform:scale(.92);transition:opacity 1.1s var(--ease),transform 1.1s var(--ease)}
.rv-scale.in{opacity:1;transform:none}
/* 逐字显现 */
.split .ch{display:inline-block;opacity:0;transform:translateY(.5em) rotate(4deg);filter:blur(6px);
  transition:opacity .7s var(--ease),transform .7s var(--ease),filter .7s var(--ease)}
.split.in .ch{opacity:1;transform:none;filter:none}

/* ---------- HERO ---------- */
.hero{background:#000;color:#f5f5f7;min-height:100vh;padding:120px 0 80px;overflow:hidden;position:relative;display:flex;align-items:center}
.hero::before{content:"";position:absolute;inset:-20% -10% auto;height:90%;pointer-events:none;
  background:radial-gradient(40% 50% at 30% 40%,rgba(20,184,166,.28),transparent 70%),
             radial-gradient(35% 45% at 75% 35%,rgba(99,102,241,.25),transparent 70%),
             radial-gradient(30% 40% at 55% 70%,rgba(168,85,247,.18),transparent 70%);
  filter:blur(30px);animation:aurora 14s ease-in-out infinite alternate}
@keyframes aurora{to{transform:translate3d(3%,4%,0) rotate(6deg) scale(1.08)}}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#a1a1a6;
  border:1px solid rgba(255,255,255,.14);padding:6px 14px;border-radius:99px;margin-bottom:26px;background:rgba(255,255,255,.04)}
.hero-kicker i{width:6px;height:6px;border-radius:50%;background:var(--jade-l);box-shadow:0 0 0 0 rgba(45,212,191,.6);animation:ping 2s infinite}
@keyframes ping{70%{box-shadow:0 0 0 10px rgba(45,212,191,0)}100%{box-shadow:0 0 0 0 rgba(45,212,191,0)}}
.hero h1{font-size:clamp(64px,10vw,140px);font-weight:800;letter-spacing:-.02em;line-height:.98}
.hero h1 small{display:block;font-size:.3em;font-weight:600;letter-spacing:.02em;color:#f5f5f7;margin-top:18px;line-height:1.3}
.hero p.lead{margin:24px 0 36px;color:#a1a1a6}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-meta{display:flex;gap:28px;margin-top:48px;color:#86868b;font-size:13px}
.hero-meta b{display:block;color:#f5f5f7;font-size:22px;font-weight:600;margin-bottom:2px}

/* 扫描舞台 */
.scan-stage{position:relative;perspective:1400px;height:540px}
.scan-card{position:absolute;left:2%;top:10px;width:94%;transform-style:preserve-3d;
  transform:rotateY(-16deg) rotateX(8deg);transition:transform .2s linear;will-change:transform}
.einv{background:#fff;color:#1d1d1f;border-radius:14px;padding:18px 18px 14px;font-size:10.5px;line-height:1.45;
  box-shadow:0 40px 80px -30px rgba(0,0,0,.8),0 0 0 1px rgba(255,255,255,.1);position:relative;overflow:hidden}
.einv-top{display:grid;grid-template-columns:48px 1fr auto;gap:10px;align-items:center;margin-bottom:10px}
.qr{width:44px;height:44px;border-radius:4px;background:
  conic-gradient(#1d1d1f 0 25%,#fff 0 50%,#1d1d1f 0 75%,#fff 0) 0 0/11px 11px;outline:3px solid #1d1d1f;outline-offset:-3px}
.einv-title{text-align:center;font-weight:700;font-size:15px;color:#8a2a1f;letter-spacing:.06em;border-bottom:2px double #c9776c;padding-bottom:3px}
.einv-no{font-size:9.5px;color:#555;text-align:right;white-space:nowrap}
.einv-no b{font-family:var(--mono);color:#1d1d1f;font-weight:600}
.einv-parties{display:grid;grid-template-columns:1fr 1fr;border:1px solid #c9776c;border-radius:4px;margin-bottom:8px}
.einv-parties>div{padding:6px 8px}.einv-parties>div+div{border-left:1px solid #c9776c}
.einv-parties h6{font-size:9px;color:#8a2a1f;font-weight:600;margin-bottom:3px}
.einv-lines{width:100%;border-collapse:collapse;font-size:9.5px;margin-bottom:6px}
.einv-lines th{color:#8a2a1f;font-weight:600;text-align:left;border-bottom:1px solid #e6c2bc;padding:3px 2px}
.einv-lines td{padding:4px 2px;font-family:var(--mono);font-size:9.5px}
.einv-lines td:first-child{font-family:var(--font)}
.einv-total{display:flex;justify-content:space-between;border-top:1px solid #c9776c;padding-top:6px;font-size:10px}
.einv-total b{font-family:var(--mono);font-size:12px}
.einv-foot{display:flex;justify-content:space-between;color:#777;font-size:9px;margin-top:6px}
.fld{position:relative;border-radius:3px;transition:background .3s,box-shadow .3s}
.fld.hit{background:rgba(45,212,191,.16);box-shadow:0 0 0 1.5px #14b8a6}
.beam{position:absolute;left:-10%;right:-10%;height:70px;top:-80px;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(45,212,191,.0) 20%,rgba(45,212,191,.35) 85%,#5eead4 100%);
  mix-blend-mode:multiply;opacity:0}
.beam::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:#5eead4;box-shadow:0 0 18px 4px rgba(94,234,212,.9)}
.beam.run{animation:beam 3.4s var(--ease) forwards}
@keyframes beam{0%{top:-80px;opacity:1}90%{opacity:1}100%{top:100%;opacity:0}}
.extract{position:absolute;left:10%;right:-2%;top:300px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:9px}
.extract .verdict{grid-column:1/-1}
.chip{background:rgba(29,29,31,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.12);
  border-radius:14px;padding:10px 12px;font-size:12px;opacity:0;transform:translateX(30px) scale(.94);
  transition:opacity .6s var(--ease),transform .6s var(--spring)}
.chip.show{opacity:1;transform:none}
.chip .k{color:#86868b;font-size:10.5px;display:flex;justify-content:space-between}
.chip .v{font-family:var(--mono);color:#f5f5f7;font-size:13px;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chip .bar{height:3px;border-radius:2px;background:rgba(255,255,255,.1);margin-top:7px;overflow:hidden}
.chip .bar i{display:block;height:100%;width:0;background:var(--grad);transition:width 1s var(--ease) .2s}
.chip.show .bar i{width:var(--c)}
.chip.verdict{border-color:rgba(45,212,191,.5);background:rgba(14,159,138,.22)}
.chip.verdict .v{color:#5eead4;font-family:var(--font);font-weight:600}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);color:#6e6e73;font-size:12px;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-hint i{width:22px;height:34px;border:1.5px solid #6e6e73;border-radius:12px;position:relative}
.scroll-hint i::after{content:"";position:absolute;left:50%;top:7px;width:3px;height:7px;border-radius:2px;background:#a1a1a6;transform:translateX(-50%);animation:wheel 1.8s infinite}
@keyframes wheel{0%{opacity:0;transform:translate(-50%,0)}30%{opacity:1}100%{opacity:0;transform:translate(-50%,10px)}}

/* ---------- 大字宣言 ---------- */
.manifesto{padding:180px 0 160px}
.manifesto p{font-size:clamp(30px,4.6vw,58px);font-weight:700;line-height:1.22;letter-spacing:-.01em}
.manifesto .word{color:#d2d2d7;transition:color .5s}
.manifesto .word.on{color:var(--ink)}
.manifesto .word.on.g{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- 数据磁贴 ---------- */
.tiles{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;margin-top:64px}
.tile{border-radius:var(--r-xl);background:#fff;padding:38px 34px;position:relative;overflow:hidden;min-height:260px;
  transition:transform .6s var(--ease),box-shadow .6s}
.tile:hover{transform:translateY(-6px);box-shadow:0 30px 60px -30px rgba(0,0,0,.25)}
.tile.w2{grid-column:span 2}.tile.w3{grid-column:span 3}.tile.w4{grid-column:span 4}.tile.w6{grid-column:span 6}
.tile.black{background:#000;color:#f5f5f7}
.tile .big{font-size:clamp(48px,6vw,76px);font-weight:800;line-height:1;letter-spacing:-.02em;margin:10px 0 14px}
.tile .cap{font-size:14px;font-weight:600;color:var(--mute)}
.tile.black .cap{color:#86868b}
.tile p{font-size:16px;color:var(--ink-2);line-height:1.6}
.tile.black p{color:#a1a1a6}
.tile .src{position:absolute;left:34px;bottom:22px;font-size:11.5px;color:#86868b}
.tile .deco{position:absolute;right:-30px;bottom:-30px;width:180px;height:180px;border-radius:50%;background:var(--grad);opacity:.12;filter:blur(10px)}
.digits{display:flex;gap:4px;margin:18px 0 8px;flex-wrap:wrap}
.digits span{font-family:var(--mono);font-size:15px;width:24px;height:32px;display:grid;place-items:center;border-radius:6px;background:var(--bg-2);
  opacity:0;transform:translateY(10px);transition:all .5s var(--spring)}
.digits.in span{opacity:1;transform:none}
.digits span.g1{background:#d6f5ef;color:#0b7a6a}.digits span.g2{background:#e2e7ff;color:#3446c9}
.digits span.g3{background:#f1e5ff;color:#7a36d6}.digits span.g4{background:#fff1d9;color:#a15c00}
.digit-legend{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12.5px;color:var(--mute)}
.digit-legend i{display:inline-block;width:9px;height:9px;border-radius:3px;margin-right:5px;vertical-align:-1px}

/* ---------- 旅程：吸顶叙事 ---------- */
.story{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;margin-top:80px}
.story-steps .step{min-height:78vh;display:flex;flex-direction:column;justify-content:center;opacity:.25;transition:opacity .5s}
.story-steps .step.on{opacity:1}
.step .no{font-family:var(--mono);font-size:13px;color:var(--jade);font-weight:600;letter-spacing:.1em}
.step h3{font-size:clamp(28px,3.4vw,42px);font-weight:700;margin:10px 0 16px;line-height:1.15}
.step p{font-size:18px;color:var(--ink-2);line-height:1.7}
.step .who{display:inline-flex;gap:8px;margin-top:20px;flex-wrap:wrap}
.tag{font-size:12.5px;font-weight:600;padding:5px 12px;border-radius:99px;background:#fff;border:1px solid var(--line-2)}
.tag.ai{color:#3446c9;background:#eef1ff;border-color:#dfe4ff}
.tag.hu{color:#a15c00;background:#fff4e0;border-color:#ffe5b8}
.tag.law{color:#0b7a6a;background:#e3f7f2;border-color:#c5eee4}
.story-stage{position:sticky;top:12vh;height:76vh;border-radius:var(--r-xl);background:#fff;overflow:hidden;
  box-shadow:0 30px 80px -40px rgba(0,0,0,.2)}
.story-rail{position:absolute;left:24px;top:24px;right:24px;display:flex;gap:6px;z-index:3}
.story-rail i{flex:1;height:3px;border-radius:2px;background:var(--line-2);overflow:hidden;position:relative}
.story-rail i::after{content:"";position:absolute;inset:0;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .6s var(--ease)}
.story-rail i.done::after{transform:none}
.scene{position:absolute;inset:0;display:grid;place-items:center;padding:60px 36px 36px;
  opacity:0;transform:scale(.94) translateY(20px);filter:blur(8px);transition:opacity .7s var(--ease),transform .7s var(--ease),filter .7s var(--ease);pointer-events:none}
.scene.on{opacity:1;transform:none;filter:none;pointer-events:auto}
.scene-cap{position:absolute;left:28px;bottom:24px;font-size:13px;color:var(--mute);font-weight:500}
/* 场景 1 采集 */
.sources{display:flex;gap:18px;align-items:center}
.src-ico{width:86px;height:86px;border-radius:24px;background:var(--bg-2);display:grid;place-items:center;font-size:12px;font-weight:600;color:var(--ink-2);
  flex-direction:column;text-align:center;line-height:1.3;position:relative}
.src-ico svg{width:30px;height:30px;margin-bottom:6px;stroke:var(--ink);fill:none;stroke-width:1.6}
.scene.on .src-ico{animation:floatIn .8s var(--spring) both}
.scene.on .src-ico:nth-child(2){animation-delay:.12s}.scene.on .src-ico:nth-child(3){animation-delay:.24s}
@keyframes floatIn{from{opacity:0;transform:translateY(30px) scale(.8)}to{opacity:1;transform:none}}
.funnel{margin-top:30px;width:300px;height:8px;border-radius:4px;background:var(--bg-2);overflow:hidden}
.funnel i{display:block;height:100%;width:0;background:var(--grad)}
.scene.on .funnel i{animation:fill 2.2s var(--ease) .5s forwards}
@keyframes fill{to{width:100%}}
.pool{margin-top:16px;font-size:14px;color:var(--mute)}
.pool b{color:var(--ink)}
/* 场景 2 识别 */
.ocr-box{position:relative;width:min(420px,90%)}
.ocr-box .einv{box-shadow:0 20px 50px -25px rgba(0,0,0,.35)}
.bbox{position:absolute;border:1.5px solid var(--indigo);border-radius:4px;background:rgba(79,107,255,.07);opacity:0;transform:scale(1.15)}
.bbox b{position:absolute;top:-19px;left:-1px;font-size:10px;background:var(--indigo);color:#fff;padding:1px 6px;border-radius:4px 4px 4px 0;white-space:nowrap;font-weight:600}
.scene.on .bbox{animation:bb .6s var(--spring) forwards}
@keyframes bb{to{opacity:1;transform:none}}
/* 场景 3 查验 */
.verify{display:grid;gap:14px;width:min(420px,92%)}
.vrow{display:flex;align-items:center;gap:14px;background:var(--bg-2);border-radius:16px;padding:16px 18px;opacity:0;transform:translateX(-20px)}
.scene.on .vrow{animation:slideIn .6s var(--ease) forwards}
.scene.on .vrow:nth-child(2){animation-delay:.35s}.scene.on .vrow:nth-child(3){animation-delay:.7s}
@keyframes slideIn{to{opacity:1;transform:none}}
.vrow .dot{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:#d6f5ef;color:#0b7a6a;font-weight:700;flex:none}
.vrow .dot.warn{background:#ffe5e3;color:#d70015}
.vrow h5{font-size:15px}.vrow p{font-size:12.5px;color:var(--mute)}
/* 场景 4 规则 */
.rules{width:min(440px,92%);font-size:14px}
.rule{display:grid;grid-template-columns:1fr auto;gap:10px;padding:14px 0;border-bottom:1px solid var(--line-2);align-items:center}
.rule code{font-family:var(--mono);font-size:12px;color:var(--mute);display:block;margin-top:2px}
.rule .st{font-size:12px;font-weight:700;padding:4px 10px;border-radius:99px;background:var(--bg-2);color:var(--mute);min-width:62px;text-align:center}
.scene.on .rule .st{animation:stamp .4s var(--spring) both}
.scene.on .rule:nth-child(1) .st{animation-delay:.3s}.scene.on .rule:nth-child(2) .st{animation-delay:.7s}
.scene.on .rule:nth-child(3) .st{animation-delay:1.1s}.scene.on .rule:nth-child(4) .st{animation-delay:1.5s}
@keyframes stamp{from{transform:scale(2);opacity:0}}
.st.ok{background:#d6f5ef!important;color:#0b7a6a!important}.st.bad{background:#ffe5e3!important;color:#d70015!important}
/* 场景 5 复核 */
.review{width:min(420px,92%);background:#000;color:#f5f5f7;border-radius:24px;padding:26px}
.review .conf{display:flex;align-items:flex-end;gap:10px;margin:14px 0}
.review .conf b{font-size:56px;font-weight:800;line-height:1}
.review .meter{height:8px;border-radius:4px;background:#333;overflow:hidden;position:relative}
.review .meter i{position:absolute;inset:0 auto 0 0;width:0;background:var(--grad-warm);border-radius:4px}
.scene.on .review .meter i{animation:m64 1.4s var(--ease) .3s forwards}
@keyframes m64{to{width:64%}}
.review .meter s{position:absolute;left:85%;top:-4px;bottom:-4px;width:2px;background:#fff}
.review .hint{font-size:12.5px;color:#a1a1a6;margin-top:8px;display:flex;justify-content:space-between}
.review .hand{display:flex;gap:10px;margin-top:20px}
.review .hand span{flex:1;text-align:center;padding:10px;border-radius:12px;background:#1d1d1f;font-size:13px;font-weight:600}
.review .hand span.pick{background:var(--jade);animation:pulse 1.6s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 6px rgba(14,159,138,.25)}}
/* 场景 6 凭证 */
.voucher{width:min(460px,94%);border:1.5px solid #1d1d1f;border-radius:6px;font-size:13px;background:#fffdf8}
.voucher-h{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-bottom:1.5px solid #1d1d1f}
.voucher-h b{font-size:17px;letter-spacing:.4em}
.vl{display:grid;grid-template-columns:1.7fr 1fr 1fr;border-bottom:1px solid #d2d2d7}
.vl>span{padding:9px 10px;border-left:1px solid #d2d2d7}.vl>span:first-child{border-left:0}
.vl.hd{font-weight:600;background:#f5f5f7;font-size:12px}
.vl .n{font-family:var(--mono);text-align:right}
.vl.body{opacity:0}.scene.on .vl.body{animation:slideIn .5s var(--ease) forwards}
.scene.on .vl.body:nth-of-type(3){animation-delay:.3s}.scene.on .vl.body:nth-of-type(4){animation-delay:.6s}.scene.on .vl.body:nth-of-type(5){animation-delay:.9s}
.vl.sum{font-weight:700}
.post-seal{position:absolute;right:16%;top:24%;border:3px solid #d70015;color:#d70015;font-weight:800;padding:6px 14px;border-radius:8px;
  transform:rotate(-12deg) scale(2.4);opacity:0;letter-spacing:.2em}
.scene.on .post-seal{animation:seal .5s var(--spring) 1.5s forwards}
@keyframes seal{to{opacity:.85;transform:rotate(-12deg) scale(1)}}
/* 场景 7 归档 */
.archive{position:relative;width:300px;height:300px}
.archive .sheet{position:absolute;left:50%;width:220px;height:140px;margin-left:-110px;border-radius:16px;background:#fff;border:1px solid var(--line-2);
  box-shadow:0 12px 30px -16px rgba(0,0,0,.3);display:flex;flex-direction:column;justify-content:center;padding:0 20px;gap:6px}
.archive .sheet i{height:6px;border-radius:3px;background:var(--bg-2)}.archive .sheet i:nth-child(2){width:70%}.archive .sheet i:nth-child(3){width:45%}
.archive .s1{top:140px}.archive .s2{top:110px;transform:scale(.93);opacity:.8}.archive .s3{top:80px;transform:scale(.86);opacity:.6}
.scene.on .archive .s1{animation:drop 1s var(--ease) both}
@keyframes drop{from{transform:translateY(-120px) rotate(-8deg);opacity:0}}
.meta-tags{position:absolute;inset:0;pointer-events:none}
.meta-tags span{position:absolute;font-size:11.5px;font-weight:600;padding:5px 10px;border-radius:99px;background:#eef1ff;color:#3446c9;opacity:0}
.scene.on .meta-tags span{animation:floatIn .7s var(--spring) forwards}
.meta-tags span:nth-child(1){left:-10px;top:30px;animation-delay:.8s!important}
.meta-tags span:nth-child(2){right:-20px;top:50px;animation-delay:1s!important;background:#e3f7f2;color:#0b7a6a}
.meta-tags span:nth-child(3){left:-30px;bottom:30px;animation-delay:1.2s!important;background:#f1e5ff;color:#7a36d6}
.meta-tags span:nth-child(4){right:-10px;bottom:10px;animation-delay:1.4s!important;background:#fff1d9;color:#a15c00}

/* ---------- 发票解剖 ---------- */
.anatomy{display:grid;grid-template-columns:1.25fr 1fr;gap:48px;margin-top:64px;align-items:start}
.anatomy-inv{position:relative}
.anatomy-inv .einv{font-size:12.5px;padding:26px 26px 20px;box-shadow:0 30px 70px -35px rgba(0,0,0,.3);border:1px solid var(--line-2)}
.anatomy-inv .einv-title{font-size:19px}
.anatomy-inv .einv-lines,.anatomy-inv .einv-lines td{font-size:11.5px}
.anatomy-inv .einv-no{font-size:11px}
.hot{cursor:pointer;outline:1.5px dashed transparent;outline-offset:2px;transition:outline-color .25s,background .25s}
.hot:hover{outline-color:#a1a1a6}
.hot.sel{outline:2px solid var(--jade);background:rgba(20,184,166,.08)}
.pin{position:absolute;width:22px;height:22px;border-radius:50%;background:var(--jade);color:#fff;font-size:11px;font-weight:700;display:grid;place-items:center;
  box-shadow:0 0 0 4px rgba(20,184,166,.25);z-index:2;pointer-events:none;transition:transform .3s var(--spring)}
.pin.sel{transform:scale(1.25);background:var(--indigo);box-shadow:0 0 0 6px rgba(79,107,255,.25)}
.anatomy-panel{position:sticky;top:90px}
.ap-card{border-radius:var(--r-l);background:var(--bg-2);padding:32px;min-height:300px}
.ap-card .no{font-family:var(--mono);color:var(--jade);font-weight:700;font-size:13px}
.ap-card h4{font-size:28px;margin:6px 0 14px}
.ap-card p{font-size:16px;color:var(--ink-2);line-height:1.75}
.ap-card .ai-says{margin-top:20px;padding:14px 16px;border-radius:14px;background:#fff;font-size:14px;color:var(--ink-2);border-left:3px solid var(--indigo)}
.ap-card .ai-says b{color:#3446c9}
.ap-card.swap{animation:swap .5s var(--ease)}
@keyframes swap{from{opacity:0;transform:translateY(12px)}}
.ap-dots{display:flex;gap:6px;margin-top:18px;flex-wrap:wrap}
.ap-dots button{width:30px;height:30px;border-radius:50%;background:var(--bg-2);font-size:12px;font-weight:700;color:var(--mute);transition:all .25s}
.ap-dots button.sel{background:var(--ink);color:#fff}
.diff-note{margin-top:22px;font-size:13.5px;color:var(--mute);line-height:1.7}

/* ---------- 四性审核 ---------- */
.four{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:64px}
.f-card{border-radius:var(--r-l);background:#fff;padding:30px 26px 26px;position:relative;overflow:hidden;min-height:340px;display:flex;flex-direction:column;
  transform-style:preserve-3d;transition:transform .5s var(--ease),box-shadow .5s}
.f-card:hover{box-shadow:0 30px 60px -30px rgba(0,0,0,.3)}
.f-card .glyph{font-size:64px;font-weight:800;line-height:1;margin-bottom:auto}
.f-card h4{font-size:22px;margin:18px 0 8px}
.f-card p{font-size:14.5px;color:var(--ink-2);line-height:1.65}
.f-card .q{margin-top:14px;font-size:13px;color:var(--mute);border-top:1px solid var(--line-2);padding-top:12px}
.f-card .q b{color:var(--ink)}
.f-card::after{content:"";position:absolute;inset:0;background:radial-gradient(300px circle at var(--mx,50%) var(--my,50%),rgba(20,184,166,.12),transparent 50%);opacity:0;transition:opacity .3s;pointer-events:none}
.f-card:hover::after{opacity:1}

/* ---------- 阈值实验（黑） ---------- */
.lab-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:56px;margin-top:64px;align-items:center}
.dots{display:grid;grid-template-columns:repeat(10,1fr);gap:9px;max-width:480px;padding:28px;border-radius:var(--r-xl);background:#111;border:1px solid #222}
.dots i{aspect-ratio:1;border-radius:50%;background:#3a3a3c;transition:background .4s,transform .4s var(--spring),box-shadow .4s}
.dots i.auto{background:#2b5c55}
.dots i.human{background:#4f6bff}
.dots i.leak{background:var(--red);box-shadow:0 0 12px rgba(255,59,48,.7);transform:scale(1.15)}
.dots i.catch{background:#4f6bff;box-shadow:inset 0 0 0 3px #ffb340}
.slider-box{margin:30px 0 26px}
.slider-box label{display:flex;justify-content:space-between;font-size:14px;color:#a1a1a6;margin-bottom:14px}
.slider-box label b{font-size:40px;color:#f5f5f7;font-weight:700;font-family:var(--mono)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:3px;background:linear-gradient(90deg,var(--jade-l) var(--p,50%),#333 var(--p,50%));outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;border-radius:50%;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.5);cursor:grab}
input[type=range]::-moz-range-thumb{width:28px;height:28px;border-radius:50%;background:#fff;border:0;cursor:grab}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.kpi{background:#1d1d1f;border-radius:18px;padding:18px}
.kpi .n{font-size:34px;font-weight:700;font-family:var(--mono);line-height:1.1}
.kpi .l{font-size:12.5px;color:#86868b;margin-top:4px;display:flex;align-items:center;gap:6px}
.kpi .l i{width:9px;height:9px;border-radius:50%}
.verdict-line{margin-top:20px;font-size:16px;color:#d2d2d7;line-height:1.7;min-height:56px}
.legend-s{display:flex;gap:16px;font-size:12px;color:#86868b;margin-top:14px;flex-wrap:wrap}
.legend-s span{display:flex;align-items:center;gap:6px}.legend-s i{width:10px;height:10px;border-radius:50%}

/* ---------- 人机分工 ---------- */
.split-cmp{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:64px}
.cmp{border-radius:var(--r-xl);padding:40px;background:#fff}
.cmp.h{background:#000;color:#f5f5f7}
.cmp h4{font-size:30px;margin-bottom:22px}
.cmp ul{list-style:none;display:grid;gap:14px}
.cmp li{display:grid;grid-template-columns:28px 1fr;gap:10px;font-size:16px;line-height:1.6;color:var(--ink-2)}
.cmp.h li{color:#d2d2d7}
.cmp li::before{content:"";width:22px;height:22px;border-radius:50%;margin-top:2px;background:#eef1ff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12l4 4 8-8' fill='none' stroke='%234f6bff' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E") center/14px no-repeat}
.cmp.h li::before{background:#3a2a10 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M6 12l4 4 8-8' fill='none' stroke='%23ffb340' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E") center/14px no-repeat}
.cmp li b{color:var(--ink)}.cmp.h li b{color:#fff}

/* ---------- 提示词工坊 ---------- */
.prompt-lab{display:grid;grid-template-columns:300px 1fr;gap:28px;margin-top:64px}
.pl-left{display:grid;gap:10px;align-content:start}
.pl-toggle{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:18px;background:#fff;text-align:left;border:2px solid transparent;transition:all .3s var(--ease)}
.pl-toggle .sw{width:40px;height:24px;border-radius:12px;background:#e8e8ed;position:relative;flex:none;transition:background .3s}
.pl-toggle .sw::after{content:"";position:absolute;left:2px;top:2px;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.3);transition:transform .3s var(--spring)}
.pl-toggle.on{border-color:var(--c)}
.pl-toggle.on .sw{background:var(--c)}.pl-toggle.on .sw::after{transform:translateX(16px)}
.pl-toggle b{display:block;font-size:15px}.pl-toggle small{font-size:12px;color:var(--mute)}
.pl-right{display:grid;gap:16px}
.pl-box{border-radius:22px;background:#fff;padding:24px;position:relative}
.pl-box h5{font-size:12px;color:var(--mute);font-weight:600;letter-spacing:.08em;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center}
.pl-prompt{font-size:14.5px;line-height:1.85;color:var(--ink-2);min-height:120px}
.pl-prompt span{border-radius:4px;padding:1px 3px;animation:hl .6s var(--ease)}
@keyframes hl{from{background:rgba(20,184,166,.35)}}
.pl-out{font-family:var(--mono);font-size:13px;line-height:1.75;white-space:pre-wrap;color:#1d1d1f;min-height:160px;background:#0b0b0c;color:#d2d2d7;border-radius:16px;padding:18px}
.pl-out .caret{display:inline-block;width:8px;height:15px;background:var(--jade-l);vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.q-meter{display:flex;align-items:center;gap:12px}
.q-meter .track{width:140px;height:6px;border-radius:3px;background:var(--line-2);overflow:hidden}
.q-meter .track i{display:block;height:100%;background:var(--grad);transition:width .7s var(--ease)}
.q-meter b{font-size:13px;color:var(--ink);font-family:var(--mono)}
.pl-tip{font-size:13.5px;color:var(--mute);line-height:1.6}

/* ---------- CTA ---------- */
.cta{padding:160px 0;background:#000;color:#f5f5f7;overflow:hidden;text-align:center}
.cta::before{content:"";position:absolute;left:50%;top:60%;width:900px;height:500px;transform:translate(-50%,-50%);
  background:radial-gradient(closest-side,rgba(79,107,255,.35),transparent);filter:blur(40px)}
.cta .wrap{position:relative}
.queue-peek{display:flex;justify-content:center;gap:14px;margin:56px 0 50px;perspective:900px}
.qp{width:150px;height:190px;border-radius:18px;background:#1d1d1f;border:1px solid #2c2c2e;padding:16px;text-align:left;font-size:12px;color:#a1a1a6;
  transform:rotateY(var(--ry)) translateZ(var(--tz));transition:transform .6s var(--ease)}
.qp:hover{transform:rotateY(0) translateZ(40px)}
.qp b{display:block;color:#f5f5f7;font-size:15px;margin:8px 0 4px}
.qp .amt{font-family:var(--mono);font-size:18px;color:#f5f5f7;margin-top:28px}
.qp .ai{display:inline-block;margin-top:10px;padding:3px 8px;border-radius:99px;font-size:11px;font-weight:600}
.ai.ok{background:rgba(40,199,111,.18);color:#5ee39b}.ai.bad{background:rgba(255,59,48,.18);color:#ff7a72}.ai.mid{background:rgba(255,159,10,.18);color:#ffc46b}

/* ---------- 页脚 ---------- */
.foot{background:var(--bg-2);padding:40px 0 50px;font-size:12px;color:var(--mute);line-height:1.8}
.foot .wrap{display:grid;gap:14px}
.foot-top{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.foot a{color:var(--ink-2)}.foot a:hover{text-decoration:underline}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
  .hero .wrap,.anatomy,.lab-grid,.split-cmp,.prompt-lab{grid-template-columns:1fr}
  .scan-stage{height:520px}
  .tiles{grid-template-columns:repeat(2,1fr)}.tile.w2,.tile.w3,.tile.w4,.tile.w6{grid-column:span 2}
  .four{grid-template-columns:repeat(2,1fr)}
  .story{grid-template-columns:1fr;gap:0}
  .story-stage{top:56px;height:52vh;order:-1;z-index:2}
  .story-steps .step{min-height:60vh;background:linear-gradient(transparent,var(--bg-2) 30%);padding:20px 0}
  .anatomy-panel{position:static}
  .nav-links{display:none}.nav-cta{margin-left:auto}
}
@media (max-width:620px){
  .sec{padding:96px 0}
  .four{grid-template-columns:1fr}
  .tiles{grid-template-columns:1fr}.tile.w2,.tile.w3,.tile.w4,.tile.w6{grid-column:span 1}
  .scan-card{width:100%;left:0}.extract{display:none}
  .kpis{grid-template-columns:1fr 1fr 1fr}.kpi .n{font-size:24px}
  .qp:nth-child(n+4){display:none}
  .hero-meta{gap:18px}
  .scroll-hint{display:none}
  .anatomy-inv .einv{font-size:10.5px;padding:16px 12px}.anatomy-inv .einv-lines th,.anatomy-inv .einv-lines td{font-size:9px;padding:3px 1px}.anatomy-inv .einv-title{font-size:14px}.anatomy-inv .einv-no{font-size:9px}
  .einv-top{grid-template-columns:36px 1fr}.einv-top .einv-no{grid-column:1/-1;text-align:left}.qr{width:34px;height:34px}
  .nav .wrap{gap:12px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .rv,.rv-scale,.split .ch{opacity:1;transform:none;filter:none}
}