/* 有爱AI 官网样式。深色科技底 + 蓝紫粉品牌渐变；字体由 build.py 子集化后放在 assets/fonts/ */
@font-face{font-family:"uai-lat";src:url(../fonts/display-lat.woff2?v=23fbf9bb) format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"uai-sc";src:url(../fonts/display-sc.woff2?v=23fbf9bb) format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"uai-mono";src:url(../fonts/mono.woff2?v=23fbf9bb) format("woff2");font-weight:100 900;font-display:swap}

:root{
  color-scheme:dark;
  --bg:#05060a; --bg2:#090b11; --panel:#0d1017; --panel2:#121620;
  --line:rgba(255,255,255,.08); --line2:rgba(255,255,255,.14);
  --text:#f4f6fb; --muted:#9aa3b5; --dim:#687083;
  --blue:#2997ff; --violet:#a259ff; --pink:#ff5f9e; --cyan:#3ee6ff; --green:#34d399;
  --grad:linear-gradient(100deg,#2997ff 0%,#a259ff 52%,#ff5f9e 100%);
  --grad-soft:linear-gradient(100deg,rgba(41,151,255,.18),rgba(162,89,255,.18) 52%,rgba(255,95,158,.18));
  --f-disp:"uai-lat","uai-sc","PingFang SC","Microsoft YaHei",sans-serif;
  --f-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --f-mono:"uai-mono",ui-monospace,"SF Mono",Consolas,"PingFang SC","Microsoft YaHei",monospace;
  --gut:clamp(16px,4vw,40px); --r:22px; --r-s:14px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 var(--f-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,video,svg{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p,ol,ul,dl,dd,figure{margin:0}
ol,ul{padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,.df{font-family:var(--f-disp);font-weight:700;letter-spacing:-.02em}
/* 中文标题只在标点/空格处换行，避免"四个行业，四 / 种…"拆词；放不下时再兜底断字 */
h1,h2,h3{text-wrap:balance;word-break:keep-all;overflow-wrap:break-word}
[hidden]{display:none!important}
h3{font-size:18px;font-weight:600;line-height:1.45}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}
::selection{background:rgba(162,89,255,.45)}
.skip{position:absolute;left:-9999px;top:8px;z-index:99;padding:8px 14px;background:#fff;color:#000;border-radius:8px}
.skip:focus{left:8px}
.wrap{width:min(100% - 2*var(--gut),1200px);margin-inline:auto}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.mono{font-family:var(--f-mono)}
.dim{color:var(--dim)}
.sm{font-size:13px}
.note{font-size:12.5px;color:var(--dim);margin-top:14px}
.note.center{text-align:center;max-width:820px;margin-inline:auto;line-height:1.8}
.lead{font-size:clamp(16px,1.6vw,18px);color:var(--muted);line-height:1.8}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:500 12.5px/1 var(--f-mono);letter-spacing:.12em;color:var(--muted)}
.eyebrow::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--grad)}
.eyebrow.sm{font-size:11.5px}
.arr{display:inline-block;width:14px;height:14px;margin-left:8px;flex:none;transition:transform .3s var(--ease);
  background:currentColor;-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8h9M8.5 4l4 4-4 4' fill='none' stroke='%23000' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/%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='M3 8h9M8.5 4l4 4-4 4' fill='none' stroke='%23000' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat}
a:hover>.arr,button:hover>.arr{transform:translateX(3px)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 24px;border-radius:999px;font-size:15.5px;font-weight:600;
  white-space:nowrap;transition:transform .25s var(--ease),box-shadow .25s,background .25s,border-color .25s}
.btn:hover{transform:translateY(-1px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-grad{color:#fff;background:var(--grad);background-size:140% 100%;box-shadow:0 8px 30px -8px rgba(162,89,255,.65),inset 0 1px 0 rgba(255,255,255,.25)}
.btn-grad:hover{background-position:100% 0;box-shadow:0 10px 40px -6px rgba(255,95,158,.6),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-glass{color:var(--text);background:rgba(255,255,255,.06);border:1px solid var(--line2);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.btn-glass:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24)}
.btns{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 导航 ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:50;transition:background .3s,border-color .3s,backdrop-filter .3s;border-bottom:1px solid transparent}
.nav.scrolled,.nav.open{background:rgba(5,6,10,.72);backdrop-filter:saturate(1.4) blur(18px);-webkit-backdrop-filter:saturate(1.4) blur(18px);border-color:var(--line)}
.nav-in{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;font:700 20px/1 var(--f-disp);letter-spacing:-.01em}
.logo img{width:30px;height:30px}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{padding:8px 14px;border-radius:999px;font-size:14.5px;color:var(--muted);transition:color .2s,background .2s}
.nav-links a:hover,.nav-links a[aria-current]{color:var(--text);background:rgba(255,255,255,.06)}
.nav-cta-m{display:none}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;position:relative;margin-left:auto}
.nav-toggle span{position:absolute;left:12px;right:12px;height:1.6px;background:var(--text);border-radius:2px;transition:transform .3s var(--ease),top .3s}
.nav-toggle span:first-child{top:16px}.nav-toggle span:last-child{top:24px}
.nav.open .nav-toggle span:first-child{top:20px;transform:rotate(45deg)}
.nav.open .nav-toggle span:last-child{top:20px;transform:rotate(-45deg)}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;min-height:min(100svh,980px);display:flex;flex-direction:column;justify-content:center;padding:120px 0 40px;overflow:hidden;isolation:isolate}
.hero-media{position:absolute;inset:0;z-index:-1}
.hero-video{width:100%;height:100%;object-fit:cover;filter:brightness(1.15) contrast(1.05)}
.hero-media::before{content:"";position:absolute;inset:0;background:url(../video/hero.jpg) center/cover;z-index:-1;filter:brightness(1.15)}
.hero-shade{position:absolute;inset:0;background:
  radial-gradient(60% 50% at 50% 42%,rgba(5,6,10,.15),rgba(5,6,10,.45) 75%),
  linear-gradient(180deg,rgba(5,6,10,.4) 0%,rgba(5,6,10,.08) 30%,rgba(5,6,10,.3) 72%,var(--bg) 100%),
  linear-gradient(100deg,rgba(41,151,255,.18),rgba(162,89,255,.12) 50%,rgba(255,95,158,.1))}
.hero-in{text-align:center;display:flex;flex-direction:column;align-items:center}
.pill{display:inline-flex;align-items:center;gap:10px;padding:7px 14px 7px 10px;border-radius:999px;font-size:13.5px;color:var(--text);
  background:rgba(10,12,18,.5);border:1px solid var(--line2);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.pill .arr{width:12px;height:12px;margin-left:2px;color:var(--muted)}
.pill-dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(52,211,153,.18);animation:blink 2.4s infinite}
@keyframes blink{50%{box-shadow:0 0 0 7px rgba(52,211,153,0)}}
.hero h1{margin:28px 0 22px;font-size:clamp(48px,8.4vw,112px);line-height:1.06;text-shadow:0 4px 40px rgba(0,0,0,.35)}
.rotator{display:inline-grid;vertical-align:bottom;margin-left:.12em;text-shadow:none}
.rotator>span{grid-area:1/1;opacity:0;transform:translateY(.35em);filter:blur(10px);transition:opacity .6s var(--ease),transform .6s var(--ease),filter .6s var(--ease)}
.rotator>span.on{opacity:1;transform:none;filter:none}
.rotator>span.out{opacity:0;transform:translateY(-.35em);filter:blur(10px)}
.hero .lead{max-width:760px;color:rgba(244,246,251,.9);text-shadow:0 1px 3px rgba(0,0,0,.6),0 2px 24px rgba(0,0,0,.7)}
.hero .btns{justify-content:center;margin-top:34px}
.hero-marq{display:flex;align-items:center;gap:20px;width:min(100% - 2*var(--gut),980px);margin:clamp(48px,8vh,96px) auto 0}
.marq-k{flex:none;font-size:12px;letter-spacing:.1em;color:var(--muted)}
.marq{flex:1;overflow:hidden;-webkit-mask:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marq-track{display:flex;width:max-content;animation:marq 32s linear infinite}
.marq-track span{padding:0 28px;font:600 20px/1 var(--f-disp);color:rgba(244,246,251,.55);white-space:nowrap}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- 区块通用 ---------- */
.sec{padding:clamp(64px,7vw,104px) 0;position:relative}
.sec-tight{padding:clamp(56px,7vw,96px) 0}
.sec-head{max-width:760px;margin-bottom:clamp(36px,5vw,60px)}
.sec-head.center{text-align:center;margin-inline:auto}
.sec-head h2{margin:18px 0 18px;font-size:clamp(34px,4.6vw,58px);line-height:1.14}
.sec-head .lead{max-width:680px}
.sec-head.center .lead{margin-inline:auto}
.sec>.wrap>.btn{margin-top:36px}
.card{position:relative;border-radius:var(--r);border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));overflow:hidden}
.spot::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .4s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(162,89,255,.12),transparent 60%)}
.spot:hover::after{opacity:1}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;font-size:12px;color:var(--muted);background:rgba(255,255,255,.05);border:1px solid var(--line)}
.tag-real{color:#7ef0c0;background:rgba(52,211,153,.1);border-color:rgba(52,211,153,.3)}
.tag-real::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--green);margin-right:6px}
.tag-demo{color:#cdb4ff;background:rgba(162,89,255,.12);border-color:rgba(162,89,255,.32)}

/* ---------- 趋势陈述 ---------- */
.shift{text-align:center}
.shift::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(50% 40% at 50% 40%,rgba(162,89,255,.12),transparent 70%)}
.shift-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:900px;margin:clamp(48px,6vw,80px) auto 0}
.shift-stats div{display:flex;flex-direction:column;gap:6px;padding:22px 12px;border-radius:var(--r-s);border:1px solid var(--line);background:rgba(255,255,255,.02)}
.shift-stats b{font-size:clamp(30px,3.6vw,46px);line-height:1.1}
.shift-stats span{font-size:14px;color:var(--muted)}

/* ---------- 三项服务：三卡并排（上图下文），窄屏改左图右文 / 单列 ---------- */
.stack{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{display:flex;flex-direction:column;border-radius:28px;overflow:hidden;border:1px solid var(--line2);background:#06070c}
.svc-art{aspect-ratio:560/470;padding:14px 14px 0}
.svc-body{flex:1;display:flex;flex-direction:column;align-items:flex-start;padding:8px 28px 32px}
.svc-body>.btn{margin-top:auto}
.svc-no{font-size:12.5px;letter-spacing:.12em;color:var(--muted)}
.svc h3{margin:14px 0 12px;font-size:clamp(26px,2.4vw,32px);line-height:1.15}
.svc-geo h3{color:#9fd3ff}.svc-ai h3{color:#d3b8ff}.svc-brand h3{color:#ffb3d1}
.svc p{color:var(--muted)}
.svc ul{display:grid;gap:10px;margin:22px 0 28px}
.svc li{display:flex;gap:12px;align-items:flex-start;font-size:15px}
.svc li::before{content:"";flex:none;width:18px;height:18px;margin-top:4px;border-radius:6px;background:var(--grad-soft);border:1px solid var(--line2);
  -webkit-mask:none;box-shadow:inset 0 0 0 4px rgba(5,6,10,.6)}

/* ---------- 左文右图 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,72px);align-items:center}
.split-even{grid-template-columns:1fr 1fr}
.split .sec-head{margin-bottom:36px}
.split-text>.btn{margin-top:32px}
.geo::before{content:"";position:absolute;inset:10% 0 auto auto;width:60%;height:70%;z-index:-1;pointer-events:none;
  background:radial-gradient(closest-side,rgba(41,151,255,.14),transparent)}

/* 循环四步 */
.loop{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.loop li{padding:20px 20px 18px;border-radius:var(--r-s);border:1px solid var(--line);background:rgba(255,255,255,.02);position:relative}
.loop-n{font-size:13px;color:var(--blue);letter-spacing:.04em}
.loop h3{margin:8px 0 6px;font-size:17px}
.loop p{font-size:14px;color:var(--muted);line-height:1.65}

/* AI 回答演示 */
.chat{background:linear-gradient(180deg,#0f121b,#0a0c12);border-color:var(--line2);box-shadow:0 40px 100px -30px rgba(41,151,255,.35),0 0 0 1px rgba(255,255,255,.02)}
.chat::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;pointer-events:none;
  background:linear-gradient(140deg,rgba(41,151,255,.6),transparent 35%,transparent 65%,rgba(255,95,158,.5));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.chat-top{display:flex;align-items:center;gap:14px;padding:14px 18px;border-bottom:1px solid var(--line)}
.dots{display:flex;gap:6px}.dots i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.14)}
.chat-ais{display:flex;gap:6px;overflow:hidden}
.chat-ais span{padding:4px 10px;border-radius:999px;font-size:12.5px;color:var(--dim);white-space:nowrap;transition:all .3s}
.chat-ais span.on{color:var(--text);background:rgba(41,151,255,.16);box-shadow:inset 0 0 0 1px rgba(41,151,255,.4)}
.chat-body{padding:22px 20px 8px;min-height:372px;display:flex;flex-direction:column;gap:18px}
.msg-q{align-self:flex-end;max-width:88%;padding:12px 16px;border-radius:16px 16px 4px 16px;background:rgba(41,151,255,.14);border:1px solid rgba(41,151,255,.25);font-size:15px}
.caret{display:inline-block;width:2px;height:1em;margin-left:2px;vertical-align:-2px;background:var(--blue);animation:caret 1s steps(1) infinite}
@keyframes caret{50%{opacity:0}}
.msg-a{transition:opacity .4s}
.a-head{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--dim);margin-bottom:12px}
.spin{width:12px;height:12px;border-radius:50%;border:1.6px solid rgba(255,255,255,.18);border-top-color:var(--cyan);animation:spin .9s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.a-list{display:grid;gap:10px}
.a-list li{padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:rgba(255,255,255,.02);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.a-top{border-color:rgba(162,89,255,.45)!important;background:linear-gradient(100deg,rgba(41,151,255,.1),rgba(162,89,255,.1),rgba(255,95,158,.08))!important;
  box-shadow:0 10px 40px -12px rgba(162,89,255,.55)}
.a-name{display:flex;align-items:center;gap:10px;font-size:15.5px}
.a-name b::before{content:"1. ";color:var(--muted);font-weight:500}
.chip-rec{padding:2px 9px;border-radius:999px;font-size:11.5px;font-weight:600;color:#fff;background:var(--grad)}
.a-top p{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.65}
.a-sk{display:grid;gap:8px}
.sk{height:9px;border-radius:6px;background:linear-gradient(90deg,rgba(255,255,255,.06),rgba(255,255,255,.12),rgba(255,255,255,.06));background-size:200% 100%;animation:sk 1.6s linear infinite}
@keyframes sk{to{background-position:-200% 0}}
.a-src{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:12px;font-size:12px;color:var(--dim)}
.a-src em{font-style:normal;padding:2px 8px;border-radius:6px;background:rgba(255,255,255,.05)}
.a-src em:first-of-type{color:var(--cyan);background:rgba(62,230,255,.1)}
.chat-input{display:flex;align-items:center;justify-content:space-between;margin:10px 16px 16px;padding:12px 16px;border-radius:14px;border:1px solid var(--line);font-size:13.5px;color:var(--dim)}
.send{width:26px;height:26px;border-radius:8px;background:var(--grad)}
.chat .hide{opacity:0;transform:translateY(8px)}
.split-demo .note{text-align:center}

/* ---------- AI 提效场景 ---------- */
.tabs{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:2px;margin-bottom:22px}
.tabs::-webkit-scrollbar{display:none}
.tabs [role=tab]{flex:none;height:42px;padding:0 18px;border-radius:999px;font-size:14.5px;color:var(--muted);border:1px solid var(--line);background:rgba(255,255,255,.02);transition:all .25s}
.tabs [role=tab]:hover{color:var(--text);border-color:var(--line2)}
.tabs [role=tab][aria-selected=true]{color:#fff;border-color:transparent;background:linear-gradient(var(--panel2),var(--panel2)) padding-box,var(--grad) border-box;border:1px solid transparent;box-shadow:0 6px 24px -10px rgba(162,89,255,.7)}
.scn-panel{display:grid;grid-template-columns:1fr 1fr 1.15fr;gap:14px;animation:fadeup .5s var(--ease)}
@keyframes fadeup{from{opacity:0;transform:translateY(10px)}}
.scn-col{position:relative;padding:22px;border-radius:var(--r-s);border:1px solid var(--line);background:rgba(255,255,255,.025)}
.scn-in::after,.scn-ai::after{content:"";position:absolute;top:50%;right:-12px;width:10px;height:10px;z-index:1;border-top:1.6px solid var(--line2);border-right:1.6px solid var(--line2);transform:translateY(-50%) rotate(45deg)}
.scn-k{display:flex;align-items:center;gap:8px;font:500 12px/1 var(--f-mono);letter-spacing:.06em;color:var(--dim);margin-bottom:14px}
.scn-text{font-size:14.5px;line-height:1.75}
.scn-in .scn-text{color:var(--muted)}
.scn-ai{background:linear-gradient(180deg,rgba(162,89,255,.09),rgba(162,89,255,.02));border-color:rgba(162,89,255,.3)}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--violet);box-shadow:0 0 0 0 rgba(162,89,255,.6);animation:pulse 1.8s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(162,89,255,0)}100%{box-shadow:0 0 0 0 rgba(162,89,255,0)}}
.scn-ai ol{display:grid;gap:10px;counter-reset:s}
.scn-ai li{display:flex;gap:10px;font-size:14px;counter-increment:s;opacity:0;animation:stepin .45s var(--ease) forwards;animation-delay:calc(var(--i)*.28s + .15s)}
.scn-ai li::before{content:counter(s);flex:none;display:grid;place-items:center;width:20px;height:20px;margin-top:2px;border-radius:6px;font:600 11px/1 var(--f-mono);background:rgba(162,89,255,.2);color:#d9c6ff}
@keyframes stepin{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:none}}
.scn-out{border-color:rgba(52,211,153,.28);background:linear-gradient(180deg,rgba(52,211,153,.07),rgba(52,211,153,.015))}
.scn-out .scn-text{opacity:0;animation:show .6s var(--ease) 1.35s forwards}
@keyframes show{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.scn-check{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line2);font-size:13px;color:#ffd38a}
.scn-check::before{content:"⚑ ";color:#ffd38a}
.scn-tools{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--dim)}
.scn-tools em,.tools-row em,.plats em,.plan-common em{font-style:normal;padding:5px 12px;border-radius:999px;font-size:13px;color:var(--muted);border:1px solid var(--line);background:rgba(255,255,255,.02)}
.tools-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:40px;padding-top:28px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.tools-row span{margin-right:8px}

/* ---------- 品牌升级 ---------- */
.pipe{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-bottom:40px;position:relative}
.pipe::before{content:"";position:absolute;left:0;right:0;top:15px;height:1px;background:linear-gradient(90deg,transparent,rgba(41,151,255,.6),rgba(162,89,255,.6),rgba(255,95,158,.6),transparent)}
.pipe li{padding:0 18px 0 0}
.pipe-n{position:relative;display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;font-size:12px;background:var(--bg);border:1px solid var(--line2);color:var(--text)}
.pipe h3{margin:16px 0 6px}
.pipe p{font-size:14px;color:var(--muted);line-height:1.7}
.sc{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(24px,4vw,56px);padding:clamp(24px,4vw,48px);align-items:center;
  background:radial-gradient(80% 90% at 85% 30%,rgba(62,230,255,.08),transparent 60%),linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015))}
.sc-text h3{margin:18px 0 12px;font-size:clamp(20px,2.2vw,26px)}
.sc-text>p{color:var(--muted)}
.sc dl,.story dl{display:grid;gap:14px;margin-top:18px}
.sc dl div,.story dl div{display:grid;grid-template-columns:44px 1fr;gap:10px}
.sc dt,.story dt{font:500 12px/1.9 var(--f-mono);color:var(--dim)}
.sc dd,.story dd{font-size:14.5px;color:var(--muted);line-height:1.75}
.sc-devices{position:relative;padding:0 9% 9% 0}
.browser{border-radius:14px;overflow:hidden;border:1px solid var(--line2);background:#0b0d13;box-shadow:0 30px 80px -30px rgba(0,0,0,.9)}
.browser-bar{display:flex;align-items:center;gap:6px;height:32px;padding:0 12px;background:#141823;border-bottom:1px solid var(--line)}
.browser-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.16)}
.browser-bar span{margin-left:12px;padding:2px 12px;border-radius:6px;font:11px/1.6 var(--f-mono);color:var(--dim);background:rgba(255,255,255,.05)}
.browser-screen{aspect-ratio:16/10;overflow:hidden}
.browser-screen img{width:100%}
.scrolly{animation:scrolly 16s ease-in-out infinite alternate;animation-play-state:paused}
.in .scrolly,.sc.in .scrolly{animation-play-state:running}
@keyframes scrolly{0%,12%{transform:none}88%,100%{transform:translateY(-38.5%)}}
.phone{position:absolute;right:0;bottom:0;width:26%;padding:6px;border-radius:28px;background:#11141c;border:1px solid var(--line2);box-shadow:0 30px 60px -20px rgba(0,0,0,.9),-20px 0 60px -20px rgba(62,230,255,.25)}
.phone-screen{border-radius:22px;overflow:hidden;aspect-ratio:390/844}
.phone-screen img{width:100%;height:100%;object-fit:cover;object-position:top}
.sc-video{grid-column:1/-1;position:relative;border-radius:var(--r-s);overflow:hidden;border:1px solid var(--line)}
.sc-video video{width:100%;aspect-ratio:21/9;object-fit:cover}
.sc-video figcaption{position:absolute;left:20px;bottom:18px;display:flex;flex-direction:column;gap:2px;padding:10px 14px;border-radius:12px;background:rgba(5,6,10,.6);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);font-size:13px;color:var(--muted)}
.sc-video figcaption b{color:var(--text);font-size:14.5px}

/* ---------- 案例 ---------- */
.stories{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stories.three{grid-template-columns:repeat(3,1fr)}
.stories.one{grid-template-columns:1fr;margin-top:20px}
.stories.one .story{display:grid;grid-template-columns:1fr 1fr}
.story{display:flex;flex-direction:column}
.story-img{position:relative;aspect-ratio:16/10;overflow:hidden}
.story-img img{width:100%;height:100%;object-fit:cover;object-position:top;transition:transform 1.2s var(--ease)}
.story:hover .story-img img{transform:scale(1.04)}
.story-img .tag{position:absolute;left:14px;top:14px;background:rgba(5,6,10,.6);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.story-img::after{content:"";position:absolute;inset:auto 0 0;height:40%;background:linear-gradient(180deg,transparent,rgba(5,6,10,.6))}
.story-body{flex:1;display:flex;flex-direction:column;padding:24px 26px 28px}
.story h3{margin:12px 0 0;font-size:19px}
.story-ask{margin-top:16px;padding:10px 14px;border-radius:14px 14px 14px 4px;background:rgba(41,151,255,.1);border:1px solid rgba(41,151,255,.22);font-size:14px;line-height:1.6}
.story-ask span{display:block;margin-bottom:2px;font-size:11.5px;letter-spacing:.04em;color:var(--cyan)}
.story-goal{margin:16px 0 20px;font-size:14.5px;color:var(--muted);line-height:1.75}
.story-more{align-self:flex-start;margin-top:auto;display:inline-flex;align-items:center;font-size:14px;transition:color .2s}
.story-more:hover{color:#9fd3ff}

/* ---------- 流程 / 优势 ---------- */
.proc{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;position:relative}
.proc::before{content:"";position:absolute;left:12%;right:12%;top:28px;height:1px;background:var(--grad);opacity:.5}
.proc li{position:relative;text-align:center;padding:0 8px}
.proc-n{display:grid;place-items:center;width:56px;height:56px;margin:0 auto 18px;border-radius:50%;font-size:22px;
  background:linear-gradient(var(--bg),var(--bg)) padding-box,var(--grad) border-box;border:1.5px solid transparent;box-shadow:0 0 30px -6px rgba(162,89,255,.6)}
.proc-when{display:inline-block;margin:8px 0 10px;padding:2px 10px;border-radius:999px;font-size:12px;color:var(--cyan);background:rgba(62,230,255,.08)}
.proc p{font-size:14px;color:var(--muted);line-height:1.7}
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.why-i{padding:28px 24px}
.why-i h3{margin:20px 0 8px}
.why-i p{font-size:14px;color:var(--muted);line-height:1.75}
.why-ic{display:block;width:44px;height:44px;border-radius:12px;background:var(--grad-soft);border:1px solid var(--line2);position:relative}
.why-ic::after{content:"";position:absolute;inset:11px;background:var(--text);-webkit-mask:var(--ic) center/contain no-repeat;mask:var(--ic) center/contain no-repeat}
.ic-1{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 17l6-6 4 4 8-8'/%3E%3Cpath d='M14 7h7v7'/%3E%3C/svg%3E")}
.ic-2{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 12s3.5-7 10-7 10 7 10 7-3.5 7-10 7S2 12 2 12z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E")}
.ic-3{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z'/%3E%3Cpath d='M9 12l2 2 4-4'/%3E%3C/svg%3E")}
.ic-4{--ic:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20.8 4.6a5.5 5.5 0 0 0-7.8 0L12 5.7l-1-1.1a5.5 5.5 0 0 0-7.8 7.8l1 1.1L12 21l7.8-7.5 1-1.1a5.5 5.5 0 0 0 0-7.8z'/%3E%3C/svg%3E")}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(24px,5vw,80px);align-items:start}
.faq-wrap .sec-head{position:sticky;top:110px}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 2px;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary h3{font-size:17px;font-weight:600}
.faq summary:hover h3{color:#fff}
.plus{position:relative;flex:none;width:28px;height:28px;border-radius:50%;border:1px solid var(--line2);transition:transform .3s var(--ease),background .3s}
.plus::before,.plus::after{content:"";position:absolute;left:50%;top:50%;width:11px;height:1.5px;background:var(--text);transform:translate(-50%,-50%)}
.plus::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .3s var(--ease)}
.faq details[open] .plus{background:rgba(162,89,255,.2);border-color:rgba(162,89,255,.5)}
.faq details[open] .plus::after{transform:translate(-50%,-50%) rotate(0)}
.faq details p{padding:0 48px 24px 2px;color:var(--muted);font-size:15px;line-height:1.85}

/* ---------- CTA ---------- */
.cta-sec{padding-top:40px;padding-bottom:clamp(56px,7vw,96px)}
.cta{display:grid;grid-template-columns:1fr auto;gap:clamp(28px,5vw,72px);align-items:center;padding:clamp(32px,6vw,72px);border-radius:32px;
  background:linear-gradient(#0b0d14,#0b0d14) padding-box,linear-gradient(120deg,rgba(41,151,255,.7),rgba(162,89,255,.4),rgba(255,95,158,.7)) border-box;border:1px solid transparent}
.cta-glow{position:absolute;inset:0;z-index:0;pointer-events:none;background:
  radial-gradient(40% 70% at 10% 0%,rgba(41,151,255,.25),transparent 70%),
  radial-gradient(40% 70% at 95% 100%,rgba(255,95,158,.22),transparent 70%),
  radial-gradient(30% 50% at 60% 50%,rgba(162,89,255,.12),transparent 70%)}
.cta>:not(.cta-glow){position:relative}
.cta h2{margin:18px 0 16px;font-size:clamp(32px,4.4vw,54px);line-height:1.15}
.cta-list{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px}
.cta-list li{display:flex;align-items:center;gap:8px;font-size:15px}
.cta-list li::before{content:"";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%3Ccircle cx='8' cy='8' r='8'/%3E%3C/svg%3E");box-shadow:inset 0 0 0 4px #0b0d14}
.cta-qr{display:flex;flex-direction:column;align-items:center;gap:12px;padding:16px;border-radius:22px;background:#fff;color:#111;font-size:13.5px;font-weight:600;
  box-shadow:0 30px 80px -20px rgba(162,89,255,.55)}
.cta-qr img{width:200px;height:200px;border-radius:10px}

/* ---------- 页脚 ---------- */
.foot{border-top:1px solid var(--line);padding:64px 0 28px;margin-top:40px;background:linear-gradient(180deg,transparent,rgba(162,89,255,.03))}
.foot-in{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.foot-brand p{margin-top:14px;font-size:14px;color:var(--muted)}
.foot-brand .mono{margin-top:6px;font-size:12.5px}
.foot-col{display:flex;flex-direction:column;gap:10px;font-size:14px}
.foot-col h4{font-size:13px;font-weight:500;color:var(--dim);margin-bottom:6px}
.foot-col a{color:var(--muted);transition:color .2s}
.foot-col a:hover{color:var(--text)}
.foot-qr img{width:96px;height:96px;border-radius:8px;background:#fff;padding:4px}
.foot-qr span{font-size:12.5px;color:var(--dim)}
.foot-bot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:48px;padding-top:22px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}

/* ---------- 服务详情页 ---------- */
.phero{position:relative;min-height:min(86svh,760px);display:flex;align-items:center;padding:120px 0 64px;overflow:hidden;isolation:isolate}
.phero-art{position:absolute;z-index:-1;top:50%;right:max(var(--gut),50% - 600px);width:min(48%,620px);aspect-ratio:560/470;translate:0 -44%}
.phero-in{max-width:none}
.phero h1{margin:22px 0 20px;font-size:clamp(44px,6.6vw,88px);line-height:1.08}
.phero .lead{max-width:min(500px,48%)}
.phero .btns{margin-top:32px}
.vs{border-radius:var(--r);border:1px solid var(--line);overflow:hidden}
.vs-row{display:grid;grid-template-columns:.6fr 1fr 1fr;border-top:1px solid var(--line)}
.vs-row:first-child{border-top:0}
.vs-row>span{padding:18px 22px;font-size:15px;color:var(--muted)}
.vs-row>span:first-child{color:var(--dim);font-size:14px}
.vs-row>span:last-child{color:var(--text);background:linear-gradient(90deg,rgba(162,89,255,.07),rgba(255,95,158,.04))}
.vs-h>span{font:600 15px/1.4 var(--f-disp);color:var(--text)}
.vs-h>span.grad{font-size:17px}
.metrics{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.metrics.m4{grid-template-columns:repeat(4,1fr)}
.metrics.m3{grid-template-columns:repeat(3,1fr)}
.metric{padding:24px 22px}
.metric h3{font-size:17px;margin-bottom:8px}
.metric p{font-size:14px;color:var(--muted);line-height:1.7}
.metric::before{content:"";display:block;width:28px;height:3px;border-radius:3px;background:var(--grad);margin-bottom:18px}
.plats{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:28px;font-size:14px;color:var(--muted)}
.plats>span{margin-right:8px}
.plats em.ov{color:#9fd3ff;border-color:rgba(41,151,255,.4)}
.plats small{font-size:12.5px;color:var(--dim);margin-left:8px}
.plans{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:960px;margin:20px auto 0}
.plan{padding:32px}
.plan-hot{background:linear-gradient(#0e111a,#0e111a) padding-box,var(--grad) border-box;border:1px solid transparent;box-shadow:0 30px 80px -30px rgba(162,89,255,.55)}
.plan-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.plan-top h3{font-size:22px}
.plan ul{display:grid;gap:14px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line)}
.plan li{display:grid;grid-template-columns:72px 1fr;gap:12px;font-size:14.5px;color:var(--text)}
.plan li b{font-weight:500;font-size:13px;color:var(--dim)}
.plan-common{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;margin-top:22px;font-size:14px;color:var(--muted)}
.plan-common span{margin-right:6px}
.steps6{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.steps6 li{padding:22px 18px;border-radius:var(--r-s);border:1px solid var(--line);background:rgba(255,255,255,.02)}
.steps6 span{font-size:30px;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.steps6 h3{margin:14px 0 6px;font-size:16px}
.steps6 p{font-size:13.5px;color:var(--muted);line-height:1.7}
.tl{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}
.tl li{padding:22px;border-radius:var(--r-s);border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,95,158,.06),transparent)}
.tl .mono{font-size:12.5px;color:#ffb3d1}
.tl h3{margin:8px 0 4px}
.tl p{font-size:14px;color:var(--muted)}
.checks{display:grid;gap:12px}
.checks li{display:flex;align-items:center;gap:14px;padding:16px 20px;border-radius:var(--r-s);border:1px solid var(--line);background:rgba(255,255,255,.02);font-size:15px}
.checks li::before{content:"";flex:none;width:22px;height:22px;border-radius:50%;background:var(--grad);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 0a12 12 0 1 0 0 24 12 12 0 0 0 0-24zm-1.6 17.2L5.6 12.4l1.7-1.7 3.1 3.1 6.3-6.3 1.7 1.7z'/%3E%3C/svg%3E") center/contain;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 0a12 12 0 1 0 0 24 12 12 0 0 0 0-24zm-1.6 17.2L5.6 12.4l1.7-1.7 3.1 3.1 6.3-6.3 1.7 1.7z'/%3E%3C/svg%3E") center/contain}

/* ---------- 入场动画 ---------- */
.js .rv{opacity:0;transform:translateY(26px);filter:blur(6px);transition:opacity .9s var(--ease),transform .9s var(--ease),filter .9s var(--ease);transition-delay:calc(var(--d,0)*.08s)}
.js .rv.in{opacity:1;transform:none;filter:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none;filter:none;transition:none}
  .marq-track,.scrolly,.sk,.pill-dot,.pulse,.spin,.caret{animation:none}
  .scn-ai li,.scn-out .scn-text{animation:none;opacity:1}
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .stack{grid-template-columns:1fr}
  .svc{flex-direction:row;align-items:center}
  .svc-art{width:52%;flex:none;padding:20px 0 20px 20px}
  .svc-body{padding:28px 32px}
  .why{grid-template-columns:1fr 1fr}
  .metrics{grid-template-columns:repeat(3,1fr)}
  .metrics.m4{grid-template-columns:1fr 1fr}
  .steps6{grid-template-columns:repeat(3,1fr)}
  .scn-panel{grid-template-columns:1fr 1fr}
  .scn-out{grid-column:1/-1}
  .scn-ai::after{display:none}
}
@media (max-width:900px){
  .nav-links{position:fixed;top:68px;left:0;right:0;flex-direction:column;gap:2px;padding:12px var(--gut) 24px;background:rgba(5,6,10,.96);
    backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line);
    opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .25s,transform .25s var(--ease),visibility .25s}
  .nav.open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a{padding:14px 12px;font-size:16px;border-radius:12px}
  .nav-links .nav-cta-m{display:flex;margin-top:12px;height:48px;color:#fff}
  .nav-cta{display:none}
  .nav-toggle{display:block}
  .split,.split-even,.sc,.faq-wrap,.cta{grid-template-columns:1fr}
  .faq-wrap .sec-head{position:static}
  .pipe{grid-template-columns:1fr 1fr;row-gap:28px}
  .pipe::before{display:none}
  .proc{grid-template-columns:1fr 1fr;row-gap:36px}
  .proc::before{display:none}
  .stories,.stories.three,.stories.one .story{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr}
  .cta-qr{justify-self:start}
  .br-d{display:none}
}
@media (max-width:760px){
  .svc{flex-direction:column;align-items:stretch}
  .svc-art{width:auto;padding:14px 12px 0}
  .svc-body{padding:4px 22px 28px}
  .phero-art{position:relative;top:auto;right:auto;width:auto;margin:0 var(--gut) 8px;translate:none}
  .phero .lead{max-width:500px}
  .phero{flex-direction:column;align-items:stretch;padding-top:76px;min-height:0}
  .loop{grid-template-columns:1fr 1fr}
  .metrics,.metrics.m3,.metrics.m4,.why,.tl{grid-template-columns:1fr}
  .steps6{grid-template-columns:1fr 1fr}
  .scn-panel{grid-template-columns:1fr}
  .scn-col::after{display:none}
  .shift-stats{grid-template-columns:1fr;max-width:420px}
  .vs-row{grid-template-columns:86px 1fr 1fr}
  .vs-row>span{padding:14px 12px;font-size:13.5px}
  .foot-in{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1/-1}
  .hero-marq{flex-direction:column;gap:12px}
  .marq{width:100%}
  .chat-body{min-height:400px}
  .sc-devices{padding:0 14% 12% 0}
  .phone{width:30%;border-radius:20px;padding:4px}
  .phone-screen{border-radius:16px}
  .sc-video video{aspect-ratio:16/9}
  .plan{padding:24px}
}
@media (max-width:440px){
  .proc,.pipe,.loop,.steps6{grid-template-columns:1fr}
  .hero .btns .btn{width:100%}
  .chat-ais span:nth-child(n+4){display:none}
}