/* ==========================================================
   设计规范（提取自 idone.idenife.com）
   背景 #fbfaf7 暖白 / 文字 #111 / 次要 #666 / 弱化 #8a8a8a
   描边 #e8e5df / 面板 rgba(255,255,255,.9) / 圆角 24px
   阴影 0 24px 80px rgba(0,0,0,.06) / 强调色 #111 纯黑
   ========================================================== */
:root{
  --text:#111111;
  --muted:#666666;
  --faint:#8a8a8a;
  --soft:#f7f5f0;
  --warm:#fbfaf7;
  --line:#e8e5df;
  --panel:rgba(255,255,255,.9);
  --accent:#111111;
  --radius:24px;
  --shadow-soft:0 24px 80px rgba(0,0,0,.06);
  --ink:#121212;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:Inter,-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--warm);
  font-size:16px;
  line-height:1.7;
  overflow-x:hidden;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}
::selection{background:#111;color:#fff}
a{color:inherit}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:20;
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;
  height:60px;padding:0 max(24px,calc((100vw - 1220px)/2));
  border-bottom:1px solid rgba(230,228,222,.72);
  background:#fbfaf7b8;
  -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
}
.brand{font-weight:700;letter-spacing:.12em;text-decoration:none;font-size:16px}
.nav{display:flex;justify-content:flex-end;gap:28px;color:#666;font-size:14px;font-weight:500}
.nav a{text-decoration:none;transition:color .16s ease}
.nav a:hover{color:#111}
.header-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:104px;height:40px;padding:0 20px;border-radius:999px;
  background:#111;color:#fff;font-size:14px;font-weight:600;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.header-cta:hover{background:#1f1f1f;transform:translateY(-1px);box-shadow:0 12px 32px rgba(0,0,0,.12)}
@media(max-width:860px){.nav{display:none}.site-header{grid-template-columns:auto auto;justify-content:space-between;padding:0 20px}}

/* ---------- 通用区块 ---------- */
.section{padding:128px 24px}
.container{width:min(1220px,100%);margin:0 auto;position:relative;z-index:1}
.section-kicker{margin:0 0 16px;color:var(--faint);font-size:13px;font-weight:500;letter-spacing:.08em}
.section-title{max-width:820px;margin:0;color:#111;font-size:clamp(38px,4.4vw,56px);font-weight:650;line-height:1.08}
.section-copy{max-width:720px;margin:22px 0 0;color:var(--muted);font-size:18px;line-height:1.85}
.soft-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);box-shadow:var(--shadow-soft)}
@media(max-width:720px){.section{padding:86px 18px}.section-title{font-size:clamp(30px,10vw,42px)}.section-copy{font-size:16px}}

/* ---------- 主视觉 ---------- */
.hero{
  position:relative;min-height:100vh;overflow:hidden;isolation:isolate;
  display:flex;align-items:center;
  background:linear-gradient(180deg,#fbfaf7,#f6f4ef 58%,#fff);
}
.hero-bg{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(circle at 74% 38%,rgba(40,105,255,.20),transparent 34rem),
    radial-gradient(circle at 88% 70%,rgba(255,72,72,.13),transparent 32rem),
    radial-gradient(circle at 24% 28%,rgba(255,255,255,.96),transparent 30rem),
    radial-gradient(circle at 12% 84%,rgba(44,104,255,.08),transparent 26rem),
    linear-gradient(180deg,#f7f5ef,#fff);
  filter:blur(8px);
}
.hero-bg:before,.hero-bg:after{
  position:absolute;content:"";border-radius:999px;filter:blur(70px);mix-blend-mode:multiply;
}
.hero-bg:before{
  width:76vmax;height:58vmax;right:-20vmax;top:-12vmax;
  background:
    radial-gradient(circle at 38% 42%,rgba(54,119,255,.30),transparent 38%),
    radial-gradient(circle at 72% 58%,rgba(255,255,255,.62),transparent 56%),
    radial-gradient(circle at 58% 74%,rgba(255,76,76,.10),transparent 54%);
  animation:aurora-a 12s ease-in-out infinite alternate;
}
.hero-bg:after{
  width:62vmax;height:50vmax;right:-16vmax;bottom:-20vmax;
  background:
    radial-gradient(circle at 48% 44%,rgba(255,76,76,.20),transparent 42%),
    radial-gradient(circle at 24% 62%,rgba(70,118,255,.16),transparent 48%),
    radial-gradient(circle at 70% 38%,rgba(255,255,255,.46),transparent 58%);
  animation:aurora-b 9.5s ease-in-out infinite alternate;
}
.hero:after{
  position:absolute;left:0;right:0;bottom:-1px;height:220px;z-index:1;content:"";pointer-events:none;
  background:
    radial-gradient(ellipse at 78% 42%,rgba(255,96,96,.07),transparent 36rem),
    radial-gradient(ellipse at 62% 54%,rgba(64,116,255,.07),transparent 34rem),
    linear-gradient(180deg,rgba(255,255,255,0),#fff 72%);
}
@keyframes aurora-a{0%{transform:translate3d(0,0,0) scale(1)}100%{transform:translate3d(-3%,2%,0) scale(1.06)}}
@keyframes aurora-b{0%{transform:translate3d(0,0,0) scale(1)}100%{transform:translate3d(3%,-2%,0) scale(1.08)}}

.hero-inner{
  position:relative;z-index:2;
  display:grid;grid-template-columns:minmax(0,.92fr) minmax(420px,1.08fr);
  gap:72px;align-items:center;
  width:min(1180px,calc(100% - 48px));min-height:100vh;margin:0 auto;padding:96px 0 72px;
}
.hero-copy{max-width:560px}
.hero-copy>*{animation:copy-in .78s cubic-bezier(.22,1,.36,1) both}
.hero-copy>*:nth-child(2){animation-delay:.06s}
.hero-copy>*:nth-child(3){animation-delay:.12s}
.hero-copy>*:nth-child(4){animation-delay:.18s}
.hero-copy>*:nth-child(5){animation-delay:.24s}
@keyframes copy-in{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.hero-eyebrow{margin:0 0 16px;color:#706b62;font-size:13px;font-weight:650;letter-spacing:.08em}
.hero h1{margin:0;color:#111;font-size:clamp(46px,5.2vw,68px);font-weight:700;line-height:1.06;letter-spacing:-.01em}
.hero-sub{margin:24px 0 0;color:#37342f;font-size:18px;line-height:1.8;max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:122px;height:44px;padding:0 22px;border-radius:999px;
  font-size:14px;font-weight:650;line-height:1;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.btn-pri{background:#111;color:#fff;box-shadow:0 14px 34px rgba(0,0,0,.16)}
.btn-pri:hover{background:#1f1f1f;transform:translateY(-1px);box-shadow:0 16px 40px rgba(0,0,0,.22)}
.btn-ghost{border:1px solid rgba(17,17,17,.12);background:#ffffffb8;color:#111;box-shadow:inset 0 1px #ffffffbf}
.btn-ghost:hover{background:#fff;transform:translateY(-1px);box-shadow:0 12px 30px rgba(0,0,0,.08)}
.hero-note{display:block;margin-top:14px;color:#817c73;font-size:12px;line-height:1.6}

.hero-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 28px;margin-top:44px;padding-top:28px;border-top:1px solid rgba(17,17,17,.08)}
.hero-metrics .m b{display:block;color:#111;font-size:26px;font-weight:700;letter-spacing:-.01em;line-height:1.2}
.hero-metrics .m span{color:#8a8a8a;font-size:12.5px}

/* ---------- Hero 右侧：一体机产品图 ---------- */
.hero-product{
  position:relative;display:flex;align-items:center;justify-content:center;
  animation:copy-in .86s .1s cubic-bezier(.22,1,.36,1) both;
  transition:transform .3s ease;
}
.hero-product:hover{transform:translateY(-6px)}
.hero-product:before{
  position:absolute;width:min(520px,92%);height:min(520px,92%);content:"";border-radius:999px;
  background:radial-gradient(circle at 48% 42%,rgba(255,255,255,.88),transparent 52%),
             radial-gradient(circle at 58% 64%,rgba(0,0,0,.06),transparent 68%);
  filter:blur(38px);transform:translate(8%,6%);
}
.hero-product img{
  position:relative;z-index:1;display:block;
  width:min(460px,100%);height:auto;object-fit:contain;
  filter:drop-shadow(0 36px 70px rgba(0,0,0,.18));
  animation:device-in .9s .12s cubic-bezier(.22,1,.36,1) both;
}
@keyframes device-in{from{opacity:0;transform:translateY(26px) scale(.97)}to{opacity:1;transform:none}}
.hero-product .device-tag{
  position:absolute;z-index:2;left:2%;bottom:6%;
  display:inline-flex;align-items:center;gap:7px;
  padding:8px 14px;border:1px solid var(--line);border-radius:999px;
  background:#ffffffcc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  box-shadow:0 14px 40px rgba(0,0,0,.10);
  color:#37342f;font-size:12px;font-weight:600;letter-spacing:.02em;
}
.hero-product .device-tag .pulse{
  position:relative;width:8px;height:8px;border-radius:50%;background:#111;flex:none;
}
.hero-product .device-tag .pulse:after{
  content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid rgba(17,17,17,.35);
  animation:pulse 2s ease-out infinite;
}
@keyframes pulse{0%{transform:scale(.6);opacity:1}100%{transform:scale(1.6);opacity:0}}
@media(max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:44px;padding:104px 0 64px;align-content:center}
  .hero-copy{max-width:680px}
  .hero-product{justify-content:flex-start}
  .hero-product img{width:min(400px,92vw)}
  .hero h1{font-size:clamp(40px,11vw,56px)}
  .hero-sub{font-size:16px}
}
@media(max-width:720px){
  .hero-inner{width:calc(100% - 36px)}
  .hero-metrics{grid-template-columns:1fr 1fr;gap:20px}
  .kpi-row{grid-template-columns:1fr}
}

/* ---------- 定义区 / 问答演示 ---------- */
.definition-section{
  position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 78% -10%,rgba(72,111,255,.07),transparent 34rem),
    radial-gradient(circle at 94% 4%,rgba(255,84,84,.055),transparent 28rem),
    linear-gradient(180deg,#fff,#fbfaf7);
}
.definition-shell{display:grid;grid-template-columns:minmax(0,.86fr) minmax(480px,1.04fr);gap:80px;align-items:center}
.definition-heading{max-width:700px}
.definition-heading h2{margin:0;color:#111;font-size:clamp(36px,4.4vw,56px);font-weight:650;line-height:1.08}
.definition-heading>p:last-child{max-width:640px;margin:26px 0 0;color:#5f5f5f;font-size:18px;line-height:1.85}
@media(max-width:1080px){.definition-shell{grid-template-columns:1fr;gap:44px}.definition-heading>p:last-child{font-size:16px}}

.showcase{position:relative}
.core-card{border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.94);box-shadow:var(--shadow-soft);padding:26px}
.core-head{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.core-head .badge{padding:4px 11px;border:1px solid #e8e5df;border-radius:999px;color:#8a8a8a;font-size:11.5px;letter-spacing:.06em}
.core-head .line{flex:1;height:1px;background:linear-gradient(90deg,#eae7e0,transparent)}
.ask{padding:16px 18px;border:1px solid #e8e5df;border-radius:16px;background:#fbfaf7;color:#111;font-size:15px}
.ask small{display:block;margin-bottom:6px;color:#a9a49b;font-size:11px;letter-spacing:.08em}
.answer{margin-top:14px;padding:18px;border:1px solid #111;border-radius:16px;background:#111;color:#fff}
.answer .a-top{display:flex;align-items:center;gap:9px;margin-bottom:14px}
.answer .a-top b{font-size:12px;font-weight:650;letter-spacing:.04em}
.answer .a-top .typing{display:inline-flex;gap:5px}
.answer .a-top .typing i{width:6px;height:6px;border-radius:50%;background:#fff;opacity:.35;animation:blink 1.2s infinite}
.answer .a-top .typing i:nth-child(2){animation-delay:.2s}
.answer .a-top .typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.25}40%{opacity:1}}
.answer .a-top .done{margin-left:auto;color:#ffffff80;font-size:11px}
.answer-rows{display:none}
.answer-rows.on{display:block}
.answer-row{display:grid;grid-template-columns:52px 1fr;gap:12px;padding:11px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13.5px;line-height:1.7}
.answer-row:first-child{border-top:none;padding-top:0}
.answer-row b{color:#ffffff8c;font-size:11.5px;font-weight:650;letter-spacing:.06em}
.answer-row span{color:#ffffffd6}
.answer-skel{padding:6px 0;color:#ffffff73;font-size:13px}
.answer-rows.on+.answer-skel{display:none}
.loop-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.loop-actions i{font-style:normal;padding:6px 13px;border:1px solid #e8e5df;border-radius:999px;color:#6a655c;font-size:12px;background:#fff}
.definition-foot{grid-column:1/-1;display:grid;gap:8px;max-width:920px;margin-top:70px;padding-top:26px;border-top:1px solid rgba(17,17,17,.08)}
.definition-foot strong{color:#222;font-size:19px;line-height:1.45;font-weight:650}
.definition-foot span{color:#777;font-size:13px;line-height:1.65}
.comparison-link{width:fit-content;margin-top:6px;color:#555;font-size:14px;font-weight:650;text-decoration:underline;text-underline-offset:5px}
.comparison-link:hover{color:#111}

/* ---------- Demo 预览 ---------- */
.demo-section{position:relative;overflow:hidden;background:#fff;border-top:1px solid #f1eee8}
.demo-inner{display:grid;grid-template-columns:minmax(0,.9fr) minmax(460px,1fr);gap:72px;align-items:center}
.demo-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.demo-mock{border:1px solid var(--line);border-radius:26px;background:#fdfcfa;box-shadow:var(--shadow-soft);padding:22px}
.dm-head{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid #efece6}
.dm-head .q{padding:7px 13px;border:1px solid #e8e5df;border-radius:999px;background:#fff;color:#111;font-size:12.5px}
.dm-head .a{margin-left:auto;color:#a9a49b;font-size:11.5px}
.dm-bars{display:grid;gap:12px;margin-top:16px}
.dm-bar{display:grid;grid-template-columns:96px 1fr 46px;align-items:center;gap:12px;font-size:12.5px;color:#666}
.dm-bar .track{height:9px;border-radius:999px;background:#efece6;overflow:hidden}
.dm-bar .track i{display:block;height:100%;border-radius:999px;background:#111}
.dm-bar .track i.gray{background:#c9c4ba}
.dm-bar em{font-style:normal;text-align:right;color:#111;font-weight:650}
.dm-sug{margin-top:16px;padding:14px 16px;border:1px solid #efece6;border-radius:14px;background:#fff}
.dm-sug b{display:block;color:#111;font-size:12.5px;margin-bottom:6px}
.dm-sug p{color:#666;font-size:12.5px;line-height:1.7}
@media(max-width:1080px){.demo-inner{grid-template-columns:1fr;gap:40px}}

/* ---------- 能力区（节能提前量） ---------- */
.impact-section{position:relative;overflow:hidden;background:linear-gradient(180deg,#fbfaf7,#f7f5f0)}
.impact-caps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:52px}
.cap{padding:28px 24px;border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.86);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease}
.cap:hover{transform:translateY(-4px);border-color:#dcd7ce;box-shadow:0 24px 60px rgba(0,0,0,.07)}
.cap b{display:block;color:#111;font-size:17px;font-weight:650;margin-bottom:8px}
.cap p{color:#666;font-size:13.5px;line-height:1.75}
.decision-field{margin-top:26px;padding:28px;border:1px solid var(--line);border-radius:24px;background:rgba(255,255,255,.9);box-shadow:var(--shadow-soft);display:grid;grid-template-columns:minmax(0,.7fr) minmax(0,1fr);gap:30px;align-items:center}
.decision-field .dl{display:grid;gap:10px}
.query-line{display:flex;align-items:center;gap:10px;padding:12px 16px;border:1px solid #e8e5df;border-radius:999px;background:#fbfaf7;color:#111;font-size:13.5px}
.query-line b{flex:none;padding:2px 9px;border-radius:999px;background:#111;color:#fff;font-size:11px;font-weight:650}
.local-core{padding:16px 18px;border:1px solid #e8e5df;border-radius:18px;background:#fff}
.local-core b{display:block;color:#111;font-size:13px;margin-bottom:5px}
.local-core p{color:#666;font-size:12.5px;line-height:1.7}
.df-right{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.result{padding:18px 16px;border:1px solid #efece6;border-radius:16px;background:#fdfcfa}
.result b{display:block;color:#a9a49b;font-size:11.5px;letter-spacing:.06em;margin-bottom:8px}
.result p{color:#37342f;font-size:12.5px;line-height:1.7}
@media(max-width:1080px){.impact-caps{grid-template-columns:repeat(2,minmax(0,1fr))}.decision-field{grid-template-columns:1fr}.df-right{grid-template-columns:1fr}}
@media(max-width:720px){.impact-caps{grid-template-columns:1fr}}

/* ---------- 技术架构（深色区块） ---------- */
.tech{
  position:relative;overflow:hidden;padding:150px 24px 132px;color:#fff;
  background:
    radial-gradient(circle at 76% 36%,rgba(123,139,190,.16),transparent 32rem),
    radial-gradient(circle at 28% 6%,rgba(255,255,255,.06),transparent 24rem),
    linear-gradient(180deg,#121212,#0f0f0f 58%,#151515);
}
.tech-haze{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.026) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(circle at 56% 46%,#000 0%,transparent 74%);
  mask-image:radial-gradient(circle at 56% 46%,#000 0%,transparent 74%);
}
.tech .container{position:relative;z-index:1}
.tech-eyebrow{margin:0 0 16px;color:#ffffff94;font-size:13px;font-weight:650;letter-spacing:.12em}
.tech h2{max-width:920px;margin:0;color:#fff;font-size:clamp(38px,4.6vw,60px);font-weight:650;line-height:1.08}
.tech-lead{max-width:900px;margin:24px 0 0;color:#ffffffad;font-size:18px;line-height:1.85}
.tech-stage{display:grid;grid-template-columns:minmax(0,1fr) minmax(330px,.5fr);gap:30px;margin-top:64px}
.tech-stack{display:grid;gap:14px}
.stack-layer{
  display:grid;grid-template-columns:minmax(0,.82fr) minmax(300px,.82fr);gap:28px;align-items:center;min-height:168px;
  padding:28px 30px;border:1px solid rgba(255,255,255,.1);border-radius:30px;
  background:radial-gradient(circle at 94% 20%,rgba(255,255,255,.07),transparent 14rem),rgba(255,255,255,.05);
  box-shadow:inset 0 1px rgba(255,255,255,.07),0 22px 80px rgba(0,0,0,.16);
  transition:border-color .3s ease,transform .3s ease;
}
.stack-layer:hover{border-color:rgba(255,255,255,.2);transform:translateY(-2px)}
.stack-layer.hl{border-color:rgba(255,255,255,.22);background:radial-gradient(circle at 88% 34%,rgba(150,162,210,.18),transparent 20rem),rgba(255,255,255,.075)}
.stack-layer span{display:block;margin:0 0 12px;color:#ffffff75;font-size:12px;font-weight:700;letter-spacing:.14em}
.stack-layer strong{display:block;color:#fff;font-size:clamp(22px,2.4vw,32px);font-weight:650;line-height:1.18}
.stack-layer p{max-width:560px;margin:14px 0 0;color:#ffffff9e;font-size:14px;line-height:1.72}
.stack-layer ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0;padding:0;list-style:none}
.stack-layer li{min-height:42px;padding:12px 14px;border-radius:999px;background:rgba(255,255,255,.07);color:#ffffffbd;font-size:13px;line-height:1.35}
.tech-panel{
  position:relative;overflow:hidden;display:grid;align-content:end;min-height:540px;padding:34px;
  border:1px solid rgba(255,255,255,.12);border-radius:34px;
  background:
    radial-gradient(circle at 56% 42%,rgba(255,255,255,.14),transparent 13rem),
    radial-gradient(circle at 72% 74%,rgba(100,118,176,.24),transparent 17rem),
    rgba(255,255,255,.055);
  box-shadow:inset 0 1px rgba(255,255,255,.08),0 34px 110px rgba(0,0,0,.22);
}
.tech-panel .orbit{position:absolute;top:34px;left:50%;transform:translateX(-50%);width:210px;height:210px;border:1px solid rgba(255,255,255,.12);border-radius:50%}
.tech-panel .orbit:before{position:absolute;inset:34px;content:"";border:1px solid rgba(255,255,255,.1);border-radius:50%}
.tech-panel .orbit:after{position:absolute;inset:0;margin:auto;width:64px;height:64px;content:"";border-radius:50%;background:radial-gradient(circle at 40% 36%,#fff,rgba(255,255,255,.22));box-shadow:0 0 70px rgba(255,255,255,.32)}
.tech-panel>p{position:relative;display:block;margin:0 0 12px;color:#ffffff75;font-size:12px;font-weight:700;letter-spacing:.14em}
.tech-panel h3{position:relative;margin:0;color:#fff;font-size:clamp(26px,2.6vw,38px);font-weight:650;line-height:1.12}
.model-compare{position:relative;display:grid;gap:10px;margin-top:26px}
.model-compare span{padding:13px 14px;border:1px solid rgba(255,255,255,.1);border-radius:999px;background:rgba(0,0,0,.16);color:#ffffffb8;font-size:13px}
.tech-pipeline{
  display:grid;grid-template-columns:auto 1fr auto 1fr auto 1fr auto;gap:12px;align-items:center;margin-top:28px;
  padding:18px 22px;border:1px solid rgba(255,255,255,.1);border-radius:999px;background:rgba(255,255,255,.05);
}
.tech-pipeline span{color:#ffffffc7;font-size:13px;white-space:nowrap}
.tech-pipeline i{display:block;height:1px;background:linear-gradient(90deg,rgba(255,255,255,.12),rgba(255,255,255,.42),rgba(255,255,255,.12))}
.security-boundary{margin-top:18px;padding:18px 22px;border:1px solid rgba(255,255,255,.1);border-radius:999px;background:rgba(255,255,255,.045);color:#ffffffad;text-align:center;font-size:14px;letter-spacing:.04em}
@media(max-width:1080px){
  .tech{padding:104px 18px}
  .tech-stage{grid-template-columns:1fr}
  .tech-panel{min-height:380px}
  .stack-layer{grid-template-columns:1fr;padding:24px;border-radius:24px}
  .stack-layer ul{grid-template-columns:1fr}
  .tech-pipeline{grid-template-columns:1fr;border-radius:24px}
  .tech-pipeline span{text-align:center}
  .tech-pipeline i{height:22px;width:1px;justify-self:center;background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.42),rgba(255,255,255,.12))}
  .security-boundary{border-radius:22px;line-height:1.7}
}

/* ---------- 模型对比 ---------- */
.model-section{position:relative;background:#fbfaf7}
.vs{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:48px}
.vs-card{padding:34px;border-radius:24px}
.vs-card.a{border:1px solid var(--line);background:rgba(255,255,255,.8);color:#6b6b6b}
.vs-card.b{border:1px solid #111;background:#111;color:#ffffffcc;box-shadow:0 30px 80px rgba(0,0,0,.16)}
.vs-card h3{margin-bottom:16px;font-size:17px;font-weight:650}
.vs-card.a h3{color:#111}
.vs-card.b h3{color:#fff}
.vs-card ul{list-style:none;display:grid;gap:12px}
.vs-card li{position:relative;padding-left:22px;font-size:14.5px;line-height:1.7}
.vs-card li:before{position:absolute;left:0;top:.62em;width:7px;height:7px;content:"";border-radius:50%}
.vs-card.a li:before{background:#c9c4ba}
.vs-card.b li:before{background:#fff}
.model-note{margin-top:22px;color:#8a8a8a;font-size:13px;line-height:1.7}
@media(max-width:720px){.vs{grid-template-columns:1fr}}

/* ---------- 渠道合作 ---------- */
.partner-section{
  position:relative;overflow:hidden;background:#fff;
  background-image:radial-gradient(circle at 82% 28%,rgba(0,0,0,.04),transparent 28rem),
                   radial-gradient(circle at 12% 70%,rgba(0,0,0,.03),transparent 24rem);
}
.partner-layout{display:grid;grid-template-columns:minmax(0,.92fr) minmax(440px,1fr);gap:80px;align-items:center}
.partner-copy{max-width:650px}
.btn-row{margin-top:34px}
.partner-note{max-width:620px;margin:18px 0 0;color:#8a8a8a;font-size:13px;line-height:1.7}
.partner-flow{position:relative;display:grid;gap:34px;padding:26px 0}
.partner-flow:before{position:absolute;top:0;bottom:0;left:22px;width:1px;content:"";background:linear-gradient(180deg,transparent,rgba(0,0,0,.2),transparent)}
.partner-flow article{position:relative;display:grid;grid-template-columns:44px 1fr;gap:22px;align-items:start}
.partner-flow span{display:grid;width:44px;height:44px;place-items:center;border:1px solid #dedad2;border-radius:50%;background:#ffffffdb;color:#111;font-size:12px;font-weight:700}
.partner-flow strong{display:block;grid-column:2;color:#111;font-size:28px;font-weight:660;line-height:1.18}
.partner-flow p{grid-column:2;max-width:560px;margin:12px 0 0;color:#666;font-size:16px;line-height:1.75}
.partner-flow p b{color:#111}
@media(max-width:1080px){.partner-layout{grid-template-columns:1fr;gap:48px}}
@media(max-width:720px){.partner-flow strong{font-size:23px}.partner-flow article{gap:16px}}

/* ---------- 预约演示 ---------- */
.lead-section{
  position:relative;
  background-image:radial-gradient(circle at 22% 16%,rgba(0,0,0,.035),transparent 30rem);
  background-color:#fbfaf7;
}
.lead-inner{display:grid;grid-template-columns:minmax(0,.95fr) minmax(420px,1fr);gap:76px;align-items:start}
.lead-copy{position:sticky;top:112px}
.lead-assurance{display:grid;gap:14px;max-width:620px;margin-top:44px}
.lead-assurance div{display:grid;grid-template-columns:42px 1fr;gap:10px 16px;padding:18px 0;border-top:1px solid #e6e1d8}
.lead-assurance span{grid-row:1/3;display:grid;width:34px;height:34px;place-items:center;border:1px solid #ded8ce;border-radius:50%;color:#777;font-size:12px;font-weight:700}
.lead-assurance strong{color:#111;font-size:16px;font-weight:650;line-height:1.35}
.lead-assurance p{margin:0;color:#666;font-size:14px;line-height:1.75}
.lead-form{padding:34px;border:1px solid #e8e5df;border-radius:28px;background:#fff;box-shadow:0 24px 80px rgba(0,0,0,.06)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px 16px}
.field{display:grid;gap:8px}
.field.full{grid-column:1/-1}
.field label{color:#1f1f1f;font-size:13.5px;font-weight:600;line-height:1.4}
.field label i{font-style:normal;color:#d45656;margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14.5px;color:#111;
  background:#fbfaf7;border:1px solid #e1ddd5;border-radius:12px;
  padding:13px 16px;min-height:48px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  appearance:none;-webkit-appearance:none;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#a8abb2}
.field input:focus,.field select:focus,.field textarea:focus{border-color:#111;background:#fff;box-shadow:0 0 0 3px rgba(17,17,17,.06)}
.field select{background-image:linear-gradient(45deg,transparent 50%,#8a8a8a 50%),linear-gradient(135deg,#8a8a8a 50%,transparent 50%);background-position:calc(100% - 21px) 21px,calc(100% - 16px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.submit-button{grid-column:1/-1;width:100%;height:52px;margin-top:4px;border:none;cursor:pointer;border-radius:999px;background:#111;color:#fff;font-family:inherit;font-size:15px;font-weight:650;transition:background .18s ease,transform .18s ease,box-shadow .18s ease}
.submit-button:hover{background:#1f1f1f;transform:translateY(-1px);box-shadow:0 16px 40px rgba(0,0,0,.18)}
.privacy-notice{grid-column:1/-1;margin:0;color:#777;font-size:12px;line-height:1.7;text-align:center}
.form-ok{display:none;text-align:center;padding:26px 0 6px}
.form-ok .tick{display:grid;place-items:center;width:52px;height:52px;margin:0 auto 16px;border-radius:50%;background:#111;color:#fff;font-size:22px}
.form-ok p{color:#111;font-size:17px;font-weight:650}
.form-ok small{display:block;margin-top:8px;color:#8a8a8a;font-size:13px}
@media(max-width:1080px){.lead-inner{grid-template-columns:1fr;gap:34px}.lead-copy{position:static}.lead-assurance{margin-top:30px}}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}.lead-form{padding:22px}.lead-assurance div{grid-template-columns:1fr}.lead-assurance span{grid-row:auto}}

/* ---------- 页脚 ---------- */
.site-footer{padding:46px 24px;border-top:1px solid var(--line);background:#fff}
.footer-inner{width:min(1220px,100%);margin:0 auto;display:grid;grid-template-columns:1fr auto auto auto;gap:18px 40px;color:#676767;font-size:14px}
.footer-inner strong{display:block;color:#111;letter-spacing:.08em}
.footer-inner p{margin:8px 0 0;line-height:1.7}
.footer-inner a{text-decoration:none;color:inherit}
.footer-inner a:hover{color:#111;text-decoration:underline}
.footer-inner>p:last-child{grid-column:1/-1;color:#8b8b8b;font-size:13px}
@media(max-width:860px){.site-footer{padding:38px 18px}.footer-inner{grid-template-columns:1fr}}

/* ---------- 滚动渐显 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.22,1,.36,1),transform .8s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .hero-bg:before,.hero-bg:after{animation:none}
}