:root{--bg:#f9f8f6;--panel:#fff;--soft:#f3f1ed;--line:#e9e6e0;--text:#141414;--muted:#6f6b64;--faint:#a19d95;--violet:#6d4aff;--violet-soft:#f1ebff;--mark:#d8c8ff;--max:1120px;--font:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{background:var(--bg);color:var(--text);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{display:block}
mark{background:linear-gradient(transparent 60%,var(--mark) 60%);color:inherit;padding:0 .06em}

.nav{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:24px;padding:14px max(24px,calc((100% - var(--max))/2 + 24px));background:rgba(249,248,246,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.2px}
.brand img{width:30px;height:30px;border-radius:9px}
.nav nav{display:flex;gap:26px;margin-left:auto;color:var(--muted);font-size:15px}
.nav nav a:hover{color:var(--text)}
.lang{display:flex;padding:3px;border-radius:999px;border:1px solid var(--line);background:#fff;cursor:pointer;font:600 12px var(--font)}
.lang span{padding:3px 9px;border-radius:999px;color:var(--muted)}
html[data-lang=zh] .lang [data-l=zh],html[data-lang=en] .lang [data-l=en]{background:var(--text);color:#fff}

.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 26px;border-radius:999px;background:var(--text);color:#fff;font-weight:600;transition:transform .15s,background .2s}
.btn:hover{background:#000;transform:translateY(-1px)}
.btn.small{padding:8px 18px;font-size:14px}
.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--text);background:#fff}

.hero{max-width:1040px;margin:0 auto;padding:96px 24px 40px;text-align:center;display:grid;justify-items:center}
h1{font-size:64px;line-height:1.12;letter-spacing:-1.5px;font-weight:700;max-width:980px}
html[data-lang=zh] h1{letter-spacing:-.5px}
@media (min-width:901px){html[data-lang=en] h1{font-size:56px}}
h1 mark{white-space:nowrap}
.lead{color:var(--muted);font-size:20px;max-width:640px;margin-top:20px}
.cta{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:34px}
.works{margin-top:22px;color:var(--faint);font-size:14px}

.demo{max-width:var(--max);margin:0 auto;padding:24px 24px 0}
.frame{padding:8px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:0 30px 70px rgba(20,20,20,.1)}
.frame video{display:block;width:100%;aspect-ratio:16/9;border-radius:19px;background:var(--bg)}

.section{max-width:var(--max);margin:0 auto;padding:120px 24px 0}
.eyebrow{text-align:center;color:var(--violet);font-weight:600;font-size:14px;margin-bottom:10px}
.eyebrow.left,.sub.left{text-align:left;margin-left:0}
h2{font-size:42px;line-height:1.22;letter-spacing:-.8px;font-weight:700;text-align:center}
html[data-lang=zh] h2{letter-spacing:-.3px}
.sub{max-width:680px;margin:16px auto 0;text-align:center;color:var(--muted);font-size:17px}
h3{font-size:20px;letter-spacing:-.2px;margin-bottom:8px}

.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.pillar{padding:30px 28px;border-radius:24px;background:#fff;border:1px solid var(--line)}
.pillar .num{display:block;font:600 14px ui-monospace,Menlo,monospace;color:var(--violet);margin-bottom:28px}
.pillar h3{font-size:26px}
.pillar p,.tile p,.step p{color:var(--muted);font-size:15px}

.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.case{display:flex;flex-direction:column;padding:26px;border-radius:24px;background:#fff;border:1px solid var(--line)}
.dept{align-self:flex-start;padding:3px 12px;border-radius:999px;background:var(--violet-soft);color:var(--violet);font-size:13px;font-weight:600}
.ask{flex:1;margin:18px 0 22px;font-size:18px;line-height:1.55}
.who{padding-top:14px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.who b{color:var(--text);font-weight:600}
.note{margin-top:16px;text-align:center;color:var(--faint);font-size:13px}

.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split h2{text-align:left}
.checks{margin-top:24px;display:grid;gap:12px}
.checks li{position:relative;padding-left:30px}
.checks li::before{content:"✓";position:absolute;left:0;top:2px;display:grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--violet-soft);color:var(--violet);font-size:12px;font-weight:700}
.mock{padding:32px 26px;border-radius:24px;background:#fff;border:1px solid var(--line);display:grid;justify-items:center;gap:22px}
.node{padding:9px 18px;border-radius:12px;background:var(--soft);font-size:15px}
.node.root{background:var(--text);color:#fff;font-weight:600}
.node.hot{background:var(--violet-soft);color:var(--violet);font-weight:600}
.branch{display:flex;gap:12px}
.proposal{width:100%;padding:16px;border-radius:16px;border:1px dashed #d8d4cc;font-size:14px}
.badge{display:inline-block;margin-right:8px;padding:1px 10px;border-radius:999px;background:#fff6e6;color:#92400e;font-size:12px}
.acts{display:flex;gap:8px;margin-top:12px}
.acts span{padding:5px 14px;border-radius:999px;border:1px solid var(--line);font-size:13px}
.acts .ok{background:var(--text);color:#fff;border-color:var(--text)}

.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:44px}
.tile{padding:24px;border-radius:22px;background:#fff;border:1px solid var(--line)}
.tile h3{font-size:17px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px}
.step{padding:28px;border-radius:24px;background:#fff;border:1px solid var(--line)}
.step .n{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--violet-soft);color:var(--violet);font-weight:700;margin-bottom:18px}

.final{max-width:var(--max);margin:120px auto 0;padding:72px 24px;text-align:center;display:grid;justify-items:center;gap:26px;border-radius:32px;background:var(--text);color:#fff}
.final img{width:64px;height:64px;border-radius:18px}
.final .btn{background:#fff;color:var(--text)}
footer{max-width:var(--max);margin:0 auto;padding:32px 24px 44px;display:flex;justify-content:space-between;color:var(--muted);font-size:14px}

@media (max-width:900px){
  .nav nav{display:none}
  .lang{margin-left:auto}
  h1{font-size:42px}
  h2{font-size:30px}
  .hero{padding-top:56px}
  .pillars,.cases,.steps,.split{grid-template-columns:1fr}
  .grid4{grid-template-columns:1fr 1fr}
  .final{margin-left:16px;margin-right:16px}
}
@media (max-width:520px){
  .nav{gap:12px;padding:12px 16px}
  .brand{font-size:16px}
  .hero,.section,.demo{padding-left:16px;padding-right:16px}
  h1{font-size:32px}
  .lead{font-size:17px}
  .grid4{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}


button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.7}button.btn{border:0}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #aa93ff;outline-offset:4px}.status-bar{display:flex;gap:16px;align-items:center;justify-content:center;padding:8px 18px;background:#f2edff;color:#6141b3;font-size:12px;border-bottom:1px solid #e6ddfc}.status-bar button{border:0;background:transparent;color:inherit;text-decoration:underline;white-space:nowrap}.hero{padding-top:72px}.hero .eyebrow{margin-bottom:20px}.hero .cta{margin-top:28px}.fee-line{font-size:14px;margin-top:18px;color:var(--violet)}.works{margin-top:10px}.demo-panel{padding:24px;box-shadow:0 16px 50px #2015360b}.demo-head{display:flex;align-items:center;justify-content:space-between;font-weight:700;border-bottom:1px solid var(--line);padding-bottom:16px}.demo-chip{font-size:12px;font-weight:500;color:var(--muted)}.demo-layout{display:grid;grid-template-columns:220px 1fr;gap:28px;padding-top:24px}.demo-devices{display:grid;align-content:start;gap:9px}.muted{font-size:13px;color:var(--muted)}.machine{padding:12px 14px;background:var(--soft);border:1px solid transparent;border-radius:12px;text-align:left;font-size:14px}.machine small{display:block;color:var(--muted);padding-left:14px}.machine.selected{background:var(--violet-soft);border-color:#d6c8ff}.demo-work{padding:6px 0}.task-bubble{background:var(--soft);padding:14px 18px;border-radius:12px;max-width:650px;margin:15px 0;font-size:15px}.demo-result{white-space:pre-line;color:var(--muted);font-size:14px;min-height:72px;margin-bottom:14px}.pricing .sub{max-width:740px}.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:42px}.plan{border:1px solid var(--line);border-radius:24px;padding:30px;background:#fff;display:flex;flex-direction:column}.plan.highlighted{border:2px solid var(--violet);padding:29px;box-shadow:0 10px 30px #6d4aff0a}.plan-label{font-weight:700;font-size:22px}.plan-desc{font-size:14px;color:var(--muted);margin-top:6px;min-height:24px}.price{display:flex;gap:8px;align-items:baseline;margin:24px 0}.price strong{font-size:48px;letter-spacing:-2px;line-height:1.2}.price span{font-size:13px;color:var(--muted)}.plan ul{display:grid;gap:9px;font-size:15px;margin-bottom:28px}.plan li b{font-size:20px}.plan .btn{width:100%;font-size:14px;margin-top:auto}.included{text-align:center;color:var(--muted);font-size:14px;line-height:1.9;margin:24px auto;max-width:850px}.included>span{font-weight:600;color:var(--text)}.estimator{display:grid;grid-template-columns:1.4fr 120px 120px 1.1fr;gap:20px;align-items:center;background:#fff;padding:24px;border-radius:18px;border:1px solid var(--line)}.estimator h3{font-size:17px;margin:0}.estimator p{font-size:13px;color:var(--muted)}.estimator label{font-size:13px;color:var(--muted);display:grid;gap:7px}.estimator input{width:100%;border-radius:9px;border:1px solid var(--line);padding:9px 12px;color:var(--text);background:#fbfaf8}.estimator .recommendation{color:var(--violet);font-weight:600}.fee-notice{margin-top:20px;background:var(--violet-soft);padding:20px 24px;border-radius:18px;font-size:14px}.fee-notice b{display:block;color:#5335ab;margin-bottom:5px}.fee-notice p{color:#6c5d89}.faq-list{max-width:820px;margin:36px auto 0}.faq-list details{border-bottom:1px solid var(--line);padding:20px 0}.faq-list summary{font-weight:600;cursor:pointer;font-size:17px;list-style-position:outside;margin-left:18px;padding-left:5px}.faq-list p{padding:14px 0 0 23px;font-size:15px;color:var(--muted)}.faq-list .text-button{margin:10px 0 0 23px}.text-button{padding:0;border:0;background:transparent;color:var(--violet);font-weight:600;font-size:14px;display:inline-block}.support-section{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.support-section h2{text-align:left;font-size:32px}.support-card{background:#fff;border:1px solid var(--line);padding:25px;border-radius:20px;font-size:14px}.support-card p{margin-bottom:16px}.support-card p>span{display:block;color:var(--muted);font-size:13px;margin-bottom:4px}.support-card strong{font-weight:500}.acts button{padding:5px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px}.acts button.ok{background:#141414;color:#fff}footer{display:grid;grid-template-columns:1fr auto;gap:20px}footer>div:first-child{display:flex;align-items:center;gap:18px}.footer-links{display:flex;gap:20px;flex-wrap:wrap}.footer-links button{border:0;background:transparent;color:var(--muted);font-size:13px}footer>p{grid-column:1/-1;font-size:12px;color:var(--faint)}dialog{border:1px solid var(--line);border-radius:24px;width:min(680px,calc(100% - 32px));max-height:85dvh;padding:0;background:#fff;color:var(--text);box-shadow:0 40px 120px #19112330}dialog::backdrop{background:#1b142750;backdrop-filter:blur(3px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;padding:23px 28px;border-bottom:1px solid var(--line)}.dialog-head h2{text-align:left;font-size:22px;letter-spacing:0}.dialog-close{border:0;background:var(--soft);width:32px;height:32px;border-radius:50%;font-size:22px;color:var(--muted)}.dialog-body{padding:26px 28px;font-size:15px;overflow-wrap:anywhere}.dialog-body h3{font-size:16px;margin:20px 0 7px}.dialog-body p{margin:10px 0;color:var(--muted)}.dialog-body ul{list-style:disc;padding-left:22px;color:var(--muted)}.draft-label{font-size:12px;color:#7253ac;background:var(--violet-soft);display:inline-block;padding:4px 10px;border-radius:6px;margin-bottom:8px}.order-line{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line);gap:15px}.order-line strong{font-weight:600}.dialog-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:23px}.dialog-actions .btn{font-size:14px;padding:11px 19px}.inline-field{display:grid;gap:6px;margin:20px 0;font-size:13px;color:var(--muted)}.inline-field input{border:1px solid var(--line);border-radius:9px;padding:11px;color:var(--text)}.consent{display:flex;gap:9px;align-items:start;font-size:13px;color:var(--muted);margin-top:18px}.consent input{margin-top:5px;accent-color:var(--violet)}.dialog-body a{color:var(--violet);text-decoration:underline}.usage-card{background:var(--soft);padding:18px;border-radius:12px;margin-top:15px}.notice-status{padding:15px 18px;border-radius:12px;background:var(--violet-soft);color:#6343b5;margin-top:15px}.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);max-width:calc(100% - 32px);padding:12px 20px;color:#fff;background:#201d28;border-radius:12px;font-size:14px;z-index:1000;box-shadow:0 8px 30px #0002}.dialog-body .review-gap{background:#fff8e9;padding:12px 16px;border-radius:10px;color:#8a6322}
@media(max-width:1000px){.nav{gap:16px}.nav nav{gap:18px}.estimator{grid-template-columns:1fr 100px 100px}.estimator .recommendation{grid-column:1/-1}.demo-layout{grid-template-columns:180px 1fr}.nav .btn.small{white-space:nowrap}}
@media(max-width:700px){.plans,.support-section{grid-template-columns:1fr}.plan-desc{min-height:0}.plan{padding:26px}.plan.highlighted{padding:25px}.demo-layout{grid-template-columns:1fr;gap:18px}.demo-devices{display:flex;overflow-x:auto;gap:7px;padding-bottom:4px}.demo-devices>span{display:none}.machine{min-width:145px;flex-shrink:0}.demo-panel{padding:18px}.hero{padding-top:48px}.section{padding-top:76px}.estimator{grid-template-columns:1fr 1fr;padding:20px;gap:16px}.estimator>div{grid-column:1/-1}.estimator .recommendation{grid-column:1/-1}.support-section h2{font-size:28px}footer{grid-template-columns:1fr}.footer-links{gap:18px}footer>p{grid-column:1}.status-bar{justify-content:space-between;align-items:start;font-size:11px}.dialog-head{padding:20px}.dialog-body{padding:20px}.hero h1 mark{white-space:normal}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.status-bar a{text-decoration:underline;white-space:nowrap}.footer-links a{color:var(--muted);font-size:13px}.support-card a{color:var(--violet)}.policy{max-width:820px;margin:0 auto;padding:64px 24px;min-height:65vh}.policy h1{font-size:40px;margin-bottom:20px}.policy h2{text-align:left;font-size:24px;margin:32px 0 12px}.policy p{margin:14px 0;color:var(--muted)}.policy a{color:var(--violet);text-decoration:underline}.policy ul{list-style:disc;padding-left:24px}.policy .updated{font-size:13px}.policy-note{padding:18px 22px;background:var(--violet-soft);border-radius:14px}.dialog-body .btn{color:#fff;text-decoration:none}.dialog-body .btn.ghost{color:var(--text)}

dialog{margin:auto}