/* 青鸟出海 QingNiao AI — site styles */
:root{
  --navy-950:#040A20;
  --navy-900:#081338;
  --navy-800:#0E1E52;
  --navy-700:#16296B;
  --blue-600:#1D5BFF;
  --blue-500:#2E7BFF;
  --cyan-400:#22D3EE;
  --cyan-300:#67E8F9;
  --ink:#0B1534;
  --ink-2:#2A3557;
  --muted:#5D6886;
  --line:#E2E7F1;
  --bg:#F5F7FC;
  --card:#FFFFFF;
  --ok:#10B981;
  --warn:#F59E0B;
  --grad:linear-gradient(100deg,#1D5BFF 0%,#2E7BFF 45%,#22D3EE 100%);
  --radius:18px;
  --shadow:0 1px 2px rgba(11,21,52,.04),0 8px 24px rgba(11,21,52,.06);
  --shadow-lg:0 30px 80px -20px rgba(4,10,32,.45);
  --font:"PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SF Mono","JetBrains Mono",Consolas,monospace;
  --wrap:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:12px}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 24px;border-radius:999px;font-weight:600;font-size:15px;border:1px solid transparent;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 30px -8px rgba(46,123,255,.7)}
.btn-primary:hover{box-shadow:0 14px 36px -8px rgba(46,123,255,.85)}
.btn-ghost{color:#fff;border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.04)}
.btn-ghost:hover{border-color:rgba(255,255,255,.45);background:rgba(255,255,255,.08)}
.btn-line{color:var(--ink);border-color:var(--line);background:#fff}
.btn-line:hover{border-color:#C5CEE0}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}

/* ---------- header ---------- */
.hdr{position:fixed;inset:0 0 auto;z-index:50;transition:background .3s,box-shadow .3s,backdrop-filter .3s}
.hdr .wrap{display:flex;align-items:center;height:76px;gap:40px}
.hdr .logo img{height:50px;width:auto}
.hdr .logo .on-light{display:none}
.hdr nav{display:flex;gap:30px;margin-left:auto}
.hdr nav a{color:rgba(255,255,255,.78);font-size:15px;transition:color .2s}
.hdr nav a:hover{color:#fff}
.hdr .cta{height:40px;padding:0 18px;font-size:14px}
.hdr.solid{background:rgba(255,255,255,.86);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);box-shadow:0 1px 0 var(--line)}
.hdr.solid .logo .on-dark{display:none}
.hdr.solid .logo .on-light{display:block}
.hdr.solid nav a{color:var(--ink-2)}
.hdr.solid nav a:hover{color:var(--blue-600)}
.menu-btn{display:none;margin-left:auto;width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.25);background:transparent;color:#fff;align-items:center;justify-content:center}
.hdr.solid .menu-btn{color:var(--ink);border-color:var(--line)}

/* ---------- hero ---------- */
.hero{position:relative;background:radial-gradient(1200px 600px at 78% 10%,rgba(46,123,255,.35),transparent 60%),radial-gradient(900px 500px at 10% 90%,rgba(34,211,238,.16),transparent 60%),linear-gradient(180deg,var(--navy-950),var(--navy-900) 70%,var(--navy-800));color:#fff;overflow:hidden;padding:150px 0 110px}
.hero::after{content:"";position:absolute;inset:auto 0 0;height:120px;background:linear-gradient(180deg,transparent,rgba(4,10,32,.0))}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-bg svg{position:absolute;right:-12%;top:-4%;width:min(1100px,95vw);opacity:.55}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.14em;font-weight:600;color:var(--cyan-300);text-transform:uppercase}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan-400);box-shadow:0 0 0 4px rgba(34,211,238,.18)}
.hero h1{font-size:clamp(40px,5.6vw,72px);line-height:1.12;margin:22px 0 22px;letter-spacing:-.01em;font-weight:800}
.hero h1 .g{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:18px;color:rgba(255,255,255,.72);max-width:540px;margin:0 0 36px}
.hero .lead b{color:#fff;font-weight:600}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}
.hero .meta{display:flex;gap:28px;margin-top:44px;flex-wrap:wrap;color:rgba(255,255,255,.6);font-size:14px}
.hero .meta span{display:flex;align-items:center;gap:8px}
.hero .meta svg{color:var(--cyan-400)}

/* hero console mockup */
.console{position:relative;background:linear-gradient(180deg,rgba(255,255,255,.10),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:16px;box-shadow:var(--shadow-lg);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.console-top{display:flex;align-items:center;gap:8px;padding:2px 4px 14px}
.console-top i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.18)}
.console-top .t{margin-left:10px;font-size:13px;color:rgba(255,255,255,.6)}
.console-top .live{margin-left:auto;display:flex;align-items:center;gap:6px;font-size:12px;color:var(--cyan-300)}
.console-top .live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 rgba(16,185,129,.6);animation:pulse 1.8s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(16,185,129,0)}100%{box-shadow:0 0 0 0 rgba(16,185,129,0)}}
.panel{background:#fff;color:var(--ink);border-radius:14px;padding:18px}
.kw{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:12px;padding:10px 12px;font-size:14px}
.kw .lbl{font-size:12px;color:var(--muted);white-space:nowrap}
.kw .typed{font-family:var(--mono);font-size:13.5px;color:var(--ink);min-height:1em}
.kw .typed::after{content:"";display:inline-block;width:1.5px;height:1em;background:var(--blue-600);margin-left:2px;vertical-align:-2px;animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.chips{display:flex;gap:6px;margin:12px 0 4px;flex-wrap:wrap}
.chip{font-size:12px;padding:3px 10px;border-radius:999px;background:#EEF3FF;color:var(--blue-600);font-weight:500}
.chip.c2{background:#E9FBFE;color:#0E7490}
.chip.c3{background:#F1F5F9;color:var(--ink-2)}
.rows{margin-top:12px;display:grid;gap:8px}
.row{display:grid;grid-template-columns:34px 1fr 92px 64px;gap:10px;align-items:center;padding:9px 10px;border-radius:10px;background:#F7F9FD;font-size:13px;opacity:0;transform:translateY(8px);transition:opacity .45s,transform .45s}
.row.in{opacity:1;transform:none}
.av{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:700;font-size:13px}
.row .nm{line-height:1.3}
.row .nm b{display:block;font-size:13px}
.row .nm small{color:var(--muted);font-size:11.5px}
.score{height:6px;border-radius:6px;background:#E6EBF5;overflow:hidden;position:relative}
.score i{position:absolute;inset:0 auto 0 0;width:0;border-radius:6px;background:var(--grad);transition:width 1s cubic-bezier(.2,.8,.2,1)}
.score-n{font-size:11.5px;color:var(--muted);margin-top:3px;font-family:var(--mono)}
.tag{font-size:11.5px;padding:3px 8px;border-radius:6px;text-align:center;font-weight:600}
.tag.ok{background:#E7F8F1;color:#047857}
.tag.rv{background:#FFF6E5;color:#B45309}
.tag.no{background:#F1F5F9;color:#94A3B8}
.console-foot{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}
.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:12px 14px}
.stat small{font-size:12px;color:rgba(255,255,255,.55);display:block}
.stat b{font-size:22px;font-family:var(--mono);font-weight:600;letter-spacing:-.02em}
.console-note{position:absolute;right:16px;bottom:-30px;font-size:12px;color:rgba(255,255,255,.4)}
.float-msg{position:absolute;left:-36px;bottom:92px;background:#fff;color:var(--ink);border-radius:14px;padding:12px 14px;box-shadow:0 20px 40px -12px rgba(0,0,0,.35);font-size:13px;width:230px;opacity:0;transform:translateY(10px) scale(.98);transition:all .5s}
.float-msg.in{opacity:1;transform:none}
.float-msg .h{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--muted);margin-bottom:6px}
.float-msg .h b{color:var(--ok)}

/* ---------- platforms strip ---------- */
.strip{background:var(--navy-800);color:rgba(255,255,255,.6);padding:22px 0;border-top:1px solid rgba(255,255,255,.06)}
.strip .wrap{display:flex;align-items:center;gap:36px;flex-wrap:wrap;justify-content:center;font-size:14px}
.strip .pf{display:flex;align-items:center;gap:8px;color:rgba(255,255,255,.82);font-weight:500}
.strip .pf svg{width:20px;height:20px}
.strip .lab{color:rgba(255,255,255,.45);font-size:13px}

/* ---------- sections ---------- */
section{position:relative}
.sec{padding:120px 0}
.sec-head{max-width:760px;margin:0 auto 64px;text-align:center}
.sec-head.left{margin-left:0;text-align:left}
.kicker{font-size:13px;letter-spacing:.16em;font-weight:700;color:var(--blue-600);text-transform:uppercase}
.sec-head h2{font-size:clamp(30px,3.8vw,46px);line-height:1.22;margin:14px 0 16px;letter-spacing:-.01em;font-weight:800}
.sec-head p{color:var(--muted);font-size:17px;margin:0}
.dark{background:var(--navy-900);color:#fff}
.dark .sec-head p{color:rgba(255,255,255,.62)}
.dark .kicker{color:var(--cyan-300)}

/* pains */
.pains{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pain{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.pain .n{font-family:var(--mono);font-size:13px;color:#A3ADC4}
.pain h3{font-size:21px;margin:18px 0 10px}
.pain p{color:var(--muted);margin:0;font-size:15px}
.pain .ic{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:#FFF1F0;color:#E5484D;margin-top:18px}
.pain:nth-child(2) .ic{background:#FFF6E5;color:#D97706}
.pain:nth-child(3) .ic{background:#EEF3FF;color:var(--blue-600)}
.pain .fix{margin-top:22px;padding-top:18px;border-top:1px dashed var(--line);font-size:14px;color:var(--ink-2);display:flex;gap:8px}
.pain .fix b{color:var(--blue-600);white-space:nowrap}

/* loop */
.loop{display:grid;grid-template-columns:380px 1fr;gap:48px;align-items:start}
.steps{display:grid;gap:12px;position:sticky;top:110px}
.step{display:grid;grid-template-columns:44px 1fr;gap:16px;text-align:left;padding:20px;border-radius:16px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.03);color:#fff;transition:background .25s,border-color .25s}
.step:hover{background:rgba(255,255,255,.06)}
.step.on{background:linear-gradient(135deg,rgba(29,91,255,.25),rgba(34,211,238,.10));border-color:rgba(103,232,249,.35)}
.step .no{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-family:var(--mono);font-weight:700;background:rgba(255,255,255,.08);color:var(--cyan-300)}
.step.on .no{background:var(--grad);color:#fff}
.step h3{margin:0;font-size:18px}
.step small{display:block;color:rgba(255,255,255,.55);font-size:12px;letter-spacing:.12em;font-weight:600}
.step p{margin:6px 0 0;color:rgba(255,255,255,.62);font-size:14px;line-height:1.65}
.stage{background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.1);border-radius:24px;padding:28px;min-height:520px}
.view{display:none;animation:fade .45s ease}
.view.on{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.view h4{margin:0 0 6px;font-size:22px}
.view .sub{color:rgba(255,255,255,.62);margin:0 0 22px;font-size:15px}
.mock{background:#fff;color:var(--ink);border-radius:16px;padding:20px}
.mock-h{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:14px}
.mock-h b{color:var(--ink);font-size:14px}
.kwgrid{display:flex;flex-wrap:wrap;gap:8px}
.kwgrid span{font-size:13px;padding:6px 12px;border-radius:8px;background:#F3F6FC;border:1px solid var(--line)}
.kwgrid span.ai{background:#EEF3FF;border-color:#D6E2FF;color:var(--blue-600)}
.kwgrid span.ai::before{content:"AI ";font-size:10px;font-weight:700;opacity:.7}
.pf-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.pf-card{border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:13px}
.pf-card b{display:block;font-size:20px;font-family:var(--mono)}
.pf-card small{color:var(--muted)}
.thr{display:grid;gap:10px}
.thr-bar{height:12px;border-radius:12px;background:linear-gradient(90deg,#E2E8F0 0 45%,#FDE68A 45% 70%,#6EE7B7 70% 100%);position:relative;margin:30px 0 8px}
.thr-bar span{position:absolute;top:-26px;transform:translateX(-50%);font-size:12px;font-family:var(--mono);color:var(--ink-2)}
.thr-bar span::after{content:"";position:absolute;left:50%;top:20px;width:1px;height:20px;background:#94A3B8}
.thr-legend{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;font-size:13px}
.thr-legend div{padding:10px 12px;border-radius:10px;background:#F7F9FD}
.thr-legend b{display:block;font-size:13px}
.dims{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.dims span{font-size:12.5px;padding:5px 10px;border-radius:8px;background:#F1F5F9;color:var(--ink-2)}
.chat{display:grid;gap:10px}
.bubble{max-width:82%;padding:12px 14px;border-radius:14px;font-size:14px;line-height:1.6}
.bubble.me{background:#EEF3FF;justify-self:end;border-bottom-right-radius:4px}
.bubble.them{background:#F1F5F9;border-bottom-left-radius:4px}
.bubble small{display:block;font-size:11px;color:var(--muted);margin-bottom:4px}
.channels{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
.channels span{font-size:12.5px;padding:5px 10px;border-radius:8px;border:1px solid var(--line)}
.cycle{display:grid;place-items:center;padding:10px 0}
.cycle svg{width:100%;max-width:420px;height:auto}
.loop-note{margin-top:16px;color:rgba(255,255,255,.55);font-size:13px}

/* quick start */
.qs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:qs}
.qs-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 30px;position:relative;box-shadow:var(--shadow)}
.qs-item::before{counter-increment:qs;content:"0" counter(qs);font-family:var(--mono);font-size:56px;font-weight:700;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.9}
.qs-item h3{font-size:20px;margin:18px 0 8px}
.qs-item p{margin:0;color:var(--muted);font-size:15px}
.qs-item .t{position:absolute;top:34px;right:30px;font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px 10px}
.qs-line{display:none}

/* products */
.prods{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:20px}
.prod{border-radius:22px;padding:34px 30px;background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.prod:hover{transform:translateY(-4px);box-shadow:0 20px 50px -20px rgba(11,21,52,.25)}
.prod .badge{align-self:flex-start;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:#EEF3FF;color:var(--blue-600);letter-spacing:.04em}
.prod h3{font-size:24px;margin:18px 0 4px}
.prod .en{font-size:12px;letter-spacing:.14em;color:var(--muted);font-weight:600}
.prod p{color:var(--muted);font-size:15px;margin:16px 0 22px}
.prod ul{list-style:none;padding:0;margin:0 0 28px;display:grid;gap:10px;font-size:15px}
.prod li{display:flex;gap:10px;align-items:flex-start}
.prod li svg{flex:none;margin-top:4px;color:var(--blue-600)}
.prod .more{margin-top:auto;font-weight:600;color:var(--blue-600);display:inline-flex;gap:6px;align-items:center}
.prod.feat{background:radial-gradient(600px 300px at 100% 0%,rgba(34,211,238,.25),transparent 60%),linear-gradient(160deg,var(--navy-800),var(--navy-950));color:#fff;border-color:transparent}
.prod.feat .badge{background:rgba(103,232,249,.15);color:var(--cyan-300)}
.prod.feat p,.prod.feat .en{color:rgba(255,255,255,.62)}
.prod.feat li svg,.prod.feat .more{color:var(--cyan-300)}

/* compare */
.cmp{background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow)}
.cmp-row{display:grid;grid-template-columns:200px 1fr 1fr;border-top:1px solid var(--line)}
.cmp-row:first-child{border-top:0}
.cmp-row>div{padding:20px 26px;font-size:15px}
.cmp-row .d{font-weight:700;display:flex;align-items:center;gap:10px}
.cmp-row .d i{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:#F1F5F9;font-style:normal;font-size:14px;color:var(--ink-2)}
.cmp-row .a{color:var(--muted)}
.cmp-row .b{background:linear-gradient(90deg,rgba(29,91,255,.05),rgba(34,211,238,.05));color:var(--ink);position:relative;padding-left:52px}
.cmp-row .b::before{content:"";position:absolute;left:24px;top:24px;width:16px;height:16px;border-radius:50%;background:var(--grad);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 0a8 8 0 1 0 0 16A8 8 0 0 0 8 0Zm3.7 6.2-4.2 4.3a.8.8 0 0 1-1.1 0L4.3 8.4a.8.8 0 1 1 1.1-1.1l1.5 1.5 3.7-3.7a.8.8 0 0 1 1.1 1.1Z'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 0a8 8 0 1 0 0 16A8 8 0 0 0 8 0Zm3.7 6.2-4.2 4.3a.8.8 0 0 1-1.1 0L4.3 8.4a.8.8 0 1 1 1.1-1.1l1.5 1.5 3.7-3.7a.8.8 0 0 1 1.1 1.1Z'/%3E%3C/svg%3E") center/contain no-repeat}
.cmp-row.h>div{font-size:13px;letter-spacing:.08em;font-weight:700;color:var(--muted);padding-top:18px;padding-bottom:18px;background:#FAFBFE}
.cmp-row.h .b{color:var(--blue-600);padding-left:26px}
.cmp-row.h .b::before{display:none}

/* industries */
.inds{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ind{position:relative;border-radius:20px;padding:28px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);overflow:hidden;transition:border-color .25s,background .25s}
.ind:hover{border-color:rgba(103,232,249,.35);background:rgba(255,255,255,.06)}
.ind .mk{font-size:12px;color:var(--cyan-300);letter-spacing:.08em;font-weight:600}
.ind h3{font-size:21px;margin:10px 0 10px}
.ind p{color:rgba(255,255,255,.62);font-size:14.5px;margin:0 0 18px}
.ind .kws{display:flex;flex-wrap:wrap;gap:6px}
.ind .kws span{font-family:var(--mono);font-size:12px;padding:3px 9px;border-radius:6px;background:rgba(255,255,255,.07);color:rgba(255,255,255,.8)}
.ind .ico{position:absolute;right:22px;top:22px;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(103,232,249,.1);color:var(--cyan-300)}

/* safety */
.safe{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:center}
.safe-list{display:grid;gap:14px;margin-top:30px}
.safe-it{display:grid;grid-template-columns:44px 1fr;gap:16px;padding:18px 20px;background:#fff;border:1px solid var(--line);border-radius:16px}
.safe-it .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:#EEF3FF;color:var(--blue-600)}
.safe-it h3{margin:0 0 2px;font-size:17px}
.safe-it p{margin:0;color:var(--muted);font-size:14.5px}
.radar{position:relative;background:linear-gradient(160deg,var(--navy-800),var(--navy-950));border-radius:28px;padding:30px;color:#fff;box-shadow:var(--shadow-lg);overflow:hidden}
.radar h4{margin:0;font-size:15px;color:rgba(255,255,255,.7);font-weight:500}
.acc{display:grid;gap:10px;margin-top:18px}
.acc-row{display:grid;grid-template-columns:28px 1fr 110px 70px;gap:12px;align-items:center;padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.05);font-size:13px}
.acc-row .pfi{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;background:rgba(255,255,255,.1)}
.acc-row .pfi svg{width:16px;height:16px}
.meter{height:6px;border-radius:6px;background:rgba(255,255,255,.1);overflow:hidden}
.meter i{display:block;height:100%;border-radius:6px}
.st{font-size:11.5px;text-align:center;padding:3px 0;border-radius:6px}
.st.g{background:rgba(16,185,129,.15);color:#6EE7B7}
.st.y{background:rgba(245,158,11,.15);color:#FCD34D}
.radar .tip{margin-top:16px;padding:12px 14px;border-radius:12px;border:1px dashed rgba(103,232,249,.35);font-size:13px;color:rgba(255,255,255,.75);display:flex;gap:10px;align-items:flex-start}
.radar .tip b{color:var(--cyan-300);white-space:nowrap}

/* faq */
.faq{max-width:860px;margin:0 auto;display:grid;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 24px;transition:box-shadow .2s}
.faq details[open]{box-shadow:var(--shadow)}
.faq summary{list-style:none;cursor:pointer;padding:22px 0;font-weight:600;font-size:17px;display:flex;justify-content:space-between;gap:20px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:22px;height:22px;border-radius:50%;background:#F1F5F9 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232A3557' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='M12 7v10M7 12h10'/%3E%3C/svg%3E") center/14px no-repeat;transition:transform .25s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0 0 22px;color:var(--muted);font-size:15.5px}

/* cta */
.cta-band{position:relative;overflow:hidden;background:radial-gradient(800px 400px at 85% 20%,rgba(34,211,238,.25),transparent 60%),radial-gradient(800px 500px at 0% 100%,rgba(29,91,255,.35),transparent 60%),var(--navy-950);color:#fff;padding:110px 0}
.cta-band .wrap{display:grid;grid-template-columns:1.3fr 1fr;gap:60px;align-items:center}
.cta-band h2{font-size:clamp(32px,4vw,52px);line-height:1.18;margin:16px 0 18px;font-weight:800}
.cta-band p{color:rgba(255,255,255,.65);font-size:17px;margin:0 0 32px;max-width:520px}
.contact-card{background:#fff;color:var(--ink);border-radius:24px;padding:28px;display:grid;grid-template-columns:150px 1fr;gap:24px;align-items:center;box-shadow:var(--shadow-lg)}
.contact-card img{width:150px;height:150px;border-radius:12px;border:1px solid var(--line);padding:6px;background:#fff}
.contact-card h3{margin:0 0 6px;font-size:19px}
.contact-card p{margin:0 0 14px;color:var(--muted);font-size:14px}
.contact-card a.mail{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--blue-600);font-size:15px;word-break:break-all}
.cta-bird{position:absolute;right:-60px;bottom:-80px;width:420px;opacity:.06;filter:brightness(10)}

/* footer */
.ftr{background:var(--navy-950);color:rgba(255,255,255,.6);padding:72px 0 36px;font-size:14px;border-top:1px solid rgba(255,255,255,.06)}
.ftr .top{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px}
.ftr .brand img{height:52px;width:auto;margin-bottom:18px}
.ftr .brand p{margin:0;max-width:300px}
.ftr h5{color:#fff;font-size:14px;margin:0 0 16px;font-weight:600}
.ftr ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.ftr a:hover{color:#fff}
.ftr .bot{margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px}
.ftr .bot nav{display:flex;gap:20px}

/* modal */
.modal{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(4,10,32,.6);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.modal.on{display:flex;animation:fade .25s}
.modal-box{background:#fff;border-radius:24px;max-width:460px;width:100%;padding:34px 30px 30px;position:relative;text-align:center}
.modal-box .x{position:absolute;right:14px;top:14px;width:36px;height:36px;border-radius:50%;border:0;background:#F1F5F9;font-size:20px;line-height:1;color:var(--ink-2)}
.modal-box h3{margin:6px 0 6px;font-size:24px}
.modal-box p{margin:0 0 20px;color:var(--muted);font-size:15px}
.modal-box img{width:200px;height:200px;margin:0 auto 14px;border:1px solid var(--line);border-radius:14px;padding:8px}
.modal-box .or{font-size:13px;color:var(--muted);margin:14px 0 8px}

/* reveal */
.rv{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}html{scroll-behavior:auto}}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .hero .wrap{grid-template-columns:1fr;gap:70px}
  .hero{padding-top:130px}
  .float-msg{left:auto;right:12px;bottom:auto;top:-28px}
  .loop{grid-template-columns:1fr}
  .steps{position:static;grid-template-columns:repeat(2,1fr)}
  .prods{grid-template-columns:1fr 1fr}
  .prod.feat{grid-column:1/-1}
  .safe{grid-template-columns:1fr;gap:48px}
  .cta-band .wrap{grid-template-columns:1fr}
}
@media (max-width:860px){
  .hdr nav,.hdr .cta{display:none}
  .menu-btn{display:inline-flex}
  .hdr.open{background:#fff;box-shadow:0 1px 0 var(--line)}
  .hdr.open .logo .on-dark{display:none}
  .hdr.open .logo .on-light{display:block}
  .hdr.open .menu-btn{color:var(--ink);border-color:var(--line)}
  .hdr.open nav{display:flex;position:absolute;top:76px;left:0;right:0;flex-direction:column;gap:0;background:#fff;padding:8px 24px 20px;box-shadow:0 20px 40px -20px rgba(0,0,0,.2)}
  .hdr.open nav a{color:var(--ink);padding:14px 0;border-bottom:1px solid var(--line);font-size:16px}
  .pains,.qs,.inds{grid-template-columns:1fr}
  .cmp-row{grid-template-columns:1fr}
  .cmp-row.h{display:none}
  .cmp-row>div{padding:12px 20px}
  .cmp-row .d{padding-top:20px}
  .cmp-row .a::before{content:"传统方式：";font-weight:600;color:var(--ink-2)}
  .cmp-row .b{padding-bottom:20px;padding-left:46px}
  .cmp-row .b::before{left:20px;top:16px}
  .ftr .top{grid-template-columns:1fr 1fr}
  .ftr .brand{grid-column:1/-1}
  .sec{padding:84px 0}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .hero{padding:116px 0 80px}
  .hero .lead{font-size:16px}
  .btn{height:46px;padding:0 20px}
  .row{grid-template-columns:30px 1fr 64px;gap:8px}
  .row .sc{display:none}
  .av{width:30px;height:30px;font-size:12px}
  .console-foot .stat b{font-size:18px}
  .float-msg{display:none}
  .steps{grid-template-columns:1fr}
  .stage{padding:16px;min-height:0}
  .pf-row,.thr-legend{grid-template-columns:1fr}
  .prods{grid-template-columns:1fr}
  .contact-card{grid-template-columns:1fr;text-align:center;justify-items:center}
  .acc-row{grid-template-columns:28px 1fr 60px}
  .acc-row .meter{display:none}
  .sec-head{margin-bottom:44px}
}
@media (max-width:640px){
  .hdr .logo img{height:42px}
  .strip{padding:18px 0}
  .strip .wrap{gap:10px 22px}
  .strip .lab{width:100%;text-align:center}
  .strip .pf{font-size:13px}
}
/* legal pages */
.page-hero{background:linear-gradient(180deg,var(--navy-950),var(--navy-800));color:#fff;padding:150px 0 70px}
.page-hero h1{font-size:clamp(32px,4vw,46px);margin:12px 0 8px}
.page-hero p{color:rgba(255,255,255,.6);margin:0}
.legal{max-width:820px;margin:0 auto;padding:64px 24px 100px}
.legal h2{font-size:21px;margin:40px 0 10px}
.legal p,.legal li{color:var(--ink-2);font-size:15.5px}
.hero .proof{display:flex;gap:0;margin-top:40px}
.hero .proof>div{padding:0 26px;border-left:1px solid rgba(255,255,255,.14)}
.hero .proof>div:first-child{padding-left:0;border-left:0}
.hero .proof b{display:block;font-size:38px;line-height:1.05;font-weight:800;letter-spacing:-.02em;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .proof b i{font-style:normal;font-size:26px}
.hero .proof span{display:block;margin-top:6px;font-size:13.5px;color:rgba(255,255,255,.66)}
.hero .proof+.meta{margin-top:30px}
@media (max-width:640px){.hero .proof>div{padding:0 14px}.hero .proof b{font-size:28px}.hero .proof b i{font-size:20px}.hero .proof span{font-size:12px}}
/* hero animates on load with CSS so it never depends on JS */
@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
.hero .rv{opacity:1;transform:none;transition:none;animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
.hero .rv.d1{animation-delay:.08s}.hero .rv.d2{animation-delay:.16s}.hero .rv.d3{animation-delay:.24s}