/* =========================================================
   归幂 × 悟空 · 官网首页
   视觉系统：归幂品牌蓝 #1668EA + 深靛蓝 #1C27C9 · 深色科技风
   ========================================================= */

:root{
  /* brand */
  --blue:#1668EA;
  --blue-deep:#1C27C9;
  --blue-bright:#4D8DFF;
  --blue-glow:rgba(38,120,255,.55);

  /* surfaces */
  --bg:#06070E;
  --bg-2:#0A0C16;
  --panel:#0E1120;
  --panel-2:#11152a;
  --line:rgba(120,150,230,.16);
  --line-strong:rgba(120,160,255,.32);

  /* text */
  --ink:#EEF3FF;
  --ink-2:#AEBAD6;
  --ink-3:#7E8AAB;

  --radius:18px;
  --radius-lg:24px;
  --maxw:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --font-cn:"Noto Sans SC","PingFang SC","HarmonyOS Sans","Microsoft YaHei",sans-serif;
  --font-en:"Inter","Noto Sans SC",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:var(--font-cn);
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
::selection{background:var(--blue);color:#fff}

/* ambient grid + glow background, fixed */
.bg-fx{position:fixed;inset:0;z-index:0;pointer-events:none}
.bg-fx::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(80,120,220,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(80,120,220,.05) 1px,transparent 1px);
  background-size:54px 54px;
  mask-image:radial-gradient(ellipse 120% 80% at 50% 0%,#000 30%,transparent 78%);
}
.bg-fx .orb{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5}
.bg-fx .orb.a{width:620px;height:620px;top:-220px;left:-160px;background:radial-gradient(circle,rgba(22,104,234,.5),transparent 70%)}
.bg-fx .orb.b{width:560px;height:560px;top:340px;right:-180px;background:radial-gradient(circle,rgba(28,39,201,.42),transparent 70%)}

/* layout */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;position:relative;z-index:1}
section{position:relative;z-index:1}
.section-pad{padding:104px 0}

/* eyebrow + section heading */
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--blue-bright);
  padding:7px 14px;border:1px solid var(--line-strong);border-radius:999px;
  background:rgba(22,104,234,.07);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--blue-bright);box-shadow:0 0 12px var(--blue-bright)}
.sec-head{max-width:760px;margin-bottom:54px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head h2{font-size:clamp(30px,3.6vw,46px);font-weight:900;line-height:1.15;margin:20px 0 16px;letter-spacing:-.01em}
.sec-head p{font-size:18px;color:var(--ink-2);text-wrap:pretty}
.grad{background:linear-gradient(100deg,var(--blue-bright),#9fc0ff 60%,var(--blue-bright));-webkit-background-clip:text;background-clip:text;color:transparent}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--font-cn);font-size:16px;font-weight:700;cursor:pointer;
  padding:14px 26px;border-radius:13px;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,border-color .25s;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn-primary{
  color:#fff;
  background:linear-gradient(180deg,var(--blue-bright),var(--blue) 60%,var(--blue-deep));
  box-shadow:0 10px 30px -8px var(--blue-glow),inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px -8px var(--blue-glow),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-ghost{color:var(--ink);background:rgba(255,255,255,.04);border-color:var(--line-strong)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--blue-bright);background:rgba(22,104,234,.12)}
.btn-lg{padding:17px 34px;font-size:17px}

/* ============ NAV ============ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s,border-color .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{background:rgba(6,7,14,.78);backdrop-filter:blur(16px);border-bottom-color:var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:14px 28px;display:flex;align-items:center;gap:34px}
.nav-logo{height:36px;width:auto}
.nav-brand{display:flex;align-items:center;gap:11px}
.nav-wukong{height:34px;width:34px;object-fit:contain}
.nav-x{font-size:17px;font-weight:600;color:var(--ink-3);line-height:1}
.nav-links{display:flex;gap:30px;margin-left:6px}
.nav-links a{font-size:15.5px;color:var(--ink-2);font-weight:500;transition:color .2s;position:relative}
.nav-links a:hover{color:var(--ink)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;height:2px;width:0;background:var(--blue-bright);transition:width .25s var(--ease)}
.nav-links a:hover::after{width:100%}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;background:none;border:0;color:var(--ink);cursor:pointer}

/* ============ HERO ============ */
.hero{padding:148px 0 90px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(38px,5vw,66px);font-weight:900;line-height:1.08;letter-spacing:-.02em;margin:24px 0 22px}
.hero h1 .hl{position:relative;color:var(--blue-bright)}
.hero p.lead{font-size:19px;color:var(--ink-2);max-width:540px;text-wrap:pretty}
.hero-cta{display:flex;gap:16px;margin-top:36px;flex-wrap:wrap}
.hero-meta{display:flex;gap:30px;margin-top:40px;flex-wrap:wrap}
.hero-meta .m{display:flex;flex-direction:column;gap:3px}
.hero-meta .m b{font-family:var(--font-en);font-size:27px;font-weight:800;color:var(--ink)}
.hero-meta .m span{font-size:13.5px;color:var(--ink-3)}

/* connection hub */
.hub{position:relative;width:100%;aspect-ratio:1;max-width:520px;margin:0 auto}
.hub-ring{position:absolute;inset:0;border-radius:50%;border:1px solid var(--line-strong)}
.hub-ring.r2{inset:13%;border-color:var(--line)}
.hub-ring.r3{inset:27%;border-style:dashed;border-color:rgba(120,160,255,.2)}
.hub-core{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:40%;aspect-ratio:1;border-radius:50%;overflow:hidden;
  border:2px solid rgba(120,170,255,.5);
  box-shadow:0 0 0 8px rgba(22,104,234,.10),0 0 60px var(--blue-glow),inset 0 0 40px rgba(0,0,0,.6);
  background:radial-gradient(circle at 50% 35%,#1a2340,#06070e 75%);
}
.hub-core img{width:100%;height:100%;object-fit:cover;filter:saturate(1.04) contrast(1.02)}
.hub-core::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 50%,transparent 45%,rgba(6,7,14,.85))}
.hub-core .core-label{position:absolute;left:0;right:0;bottom:14%;text-align:center;z-index:2;font-weight:900;font-size:16px;letter-spacing:.04em;text-shadow:0 2px 8px #000}
.hub-core .core-label em{font-style:normal;font-family:var(--font-en);color:var(--blue-bright)}
.hub-node{
  position:absolute;left:50%;top:50%;
  --r:0deg;--d:210px;
  transform:rotate(var(--r)) translate(var(--d)) rotate(calc(-1*var(--r)));
  margin:-30px 0 0 -30px;width:60px;height:60px;border-radius:14px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  background:linear-gradient(180deg,var(--panel-2),var(--panel));
  border:1px solid var(--line-strong);
  box-shadow:0 8px 24px -10px rgba(0,0,0,.7);
  font-size:10.5px;font-weight:600;color:var(--ink-2);text-align:center;
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
  animation:floaty 6s ease-in-out infinite;
}
.hub-node svg{width:20px;height:20px;color:var(--blue-bright)}
.hub-node:hover{border-color:var(--blue-bright);box-shadow:0 0 24px -4px var(--blue-glow);color:var(--ink)}
@keyframes floaty{0%,100%{margin-top:-30px}50%{margin-top:-36px}}
.hub-pulse{position:absolute;left:50%;top:50%;width:8px;height:8px;border-radius:50%;background:var(--blue-bright);box-shadow:0 0 12px var(--blue-bright);transform:translate(-50%,-50%);animation:pulse 3s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 var(--blue-glow);opacity:.9}100%{box-shadow:0 0 0 200px transparent;opacity:0}}

/* ============ generic card ============ */
.card{
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.012));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s,background .3s;
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 24px 50px -24px rgba(0,0,0,.8)}
.icon-badge{
  width:48px;height:48px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,rgba(22,104,234,.22),rgba(28,39,201,.14));
  border:1px solid var(--line-strong);color:var(--blue-bright);margin-bottom:18px;
}
.icon-badge svg{width:24px;height:24px}

/* ============ Skill flow ============ */
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:0;position:relative}
.flow-step{position:relative;padding:0 14px}
.flow-step .num{font-family:var(--font-en);font-size:13px;font-weight:800;color:var(--blue-bright);letter-spacing:.1em}
.flow-step .dot{width:16px;height:16px;border-radius:50%;background:var(--blue);border:3px solid var(--bg);box-shadow:0 0 0 3px var(--line-strong);margin:14px 0;position:relative;z-index:2}
.flow-step h4{font-size:17px;font-weight:700;margin-bottom:7px}
.flow-step p{font-size:13.5px;color:var(--ink-3);line-height:1.5}
.flow-line{position:absolute;top:calc(13px + 21px);left:7%;right:7%;height:2px;background:linear-gradient(90deg,var(--blue-deep),var(--blue),var(--blue-bright));z-index:1;opacity:.6}
.flow-example{
  margin-top:46px;display:flex;align-items:center;gap:22px;flex-wrap:wrap;
  background:linear-gradient(120deg,rgba(22,104,234,.1),rgba(28,39,201,.05));
  border:1px solid var(--line-strong);border-radius:var(--radius);padding:24px 28px;
}
.flow-example .tag{font-size:12px;font-weight:800;letter-spacing:.1em;color:var(--blue-bright);text-transform:uppercase}
.flow-example .q{font-size:17px;font-weight:600;flex:1;min-width:240px}
.flow-example .q .quote{color:var(--blue-bright)}
.flow-example .arrow{color:var(--ink-3)}
.flow-example .out{display:flex;gap:10px;flex-wrap:wrap}
.chip{font-size:13px;font-weight:600;padding:7px 13px;border-radius:9px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--ink-2)}

/* ============ capabilities ============ */
.cap-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.cap .icon-badge{margin-bottom:16px}
.cap h3{font-size:19px;font-weight:800;margin-bottom:14px}
.cap ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.cap li{font-size:14px;color:var(--ink-2);display:flex;align-items:center;gap:9px}
.cap li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--blue-bright);flex:none}

/* ============ industries tabs ============ */
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.tab{
  font-size:14.5px;font-weight:600;padding:10px 18px;border-radius:11px;cursor:pointer;
  background:rgba(255,255,255,.035);border:1px solid var(--line);color:var(--ink-2);
  transition:all .22s var(--ease);
}
.tab:hover{border-color:var(--line-strong);color:var(--ink)}
.tab.active{background:linear-gradient(180deg,var(--blue),var(--blue-deep));border-color:transparent;color:#fff;box-shadow:0 8px 22px -8px var(--blue-glow)}
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.scene{
  background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.01));
  border:1px solid var(--line);border-radius:14px;padding:18px 18px 18px 20px;
  display:flex;align-items:flex-start;gap:12px;transition:all .25s var(--ease);position:relative;overflow:hidden;
}
.scene::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(var(--blue-bright),var(--blue-deep));opacity:0;transition:opacity .25s}
.scene:hover{transform:translateY(-3px);border-color:var(--line-strong);background:rgba(22,104,234,.08)}
.scene:hover::before{opacity:1}
.scene .si{width:30px;height:30px;border-radius:9px;flex:none;display:flex;align-items:center;justify-content:center;background:rgba(22,104,234,.16);color:var(--blue-bright)}
.scene .si svg{width:17px;height:17px}
.scene span{font-size:14.5px;font-weight:600;line-height:1.4;color:var(--ink);padding-top:4px}
.scene-more{margin-top:24px;display:flex;align-items:center;gap:8px;color:var(--blue-bright);font-weight:600;font-size:15px}

/* ============ cases ============ */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.case{padding:0;overflow:hidden}
.case-video{
  position:relative;aspect-ratio:16/10;border-radius:0;
  background:
    radial-gradient(circle at 50% 45%,rgba(22,104,234,.28),transparent 60%),
    linear-gradient(135deg,#0b1024,#0a0c16);
  display:flex;align-items:center;justify-content:center;cursor:pointer;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.case-video::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(120,160,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,255,.05) 1px,transparent 1px);background-size:34px 34px;opacity:.6}
.play{width:66px;height:66px;border-radius:50%;background:rgba(22,104,234,.9);display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 0 var(--blue-glow);animation:playpulse 2.6s infinite;z-index:2;transition:transform .25s}
.case-video:hover .play{transform:scale(1.08)}
.play svg{width:26px;height:26px;color:#fff;margin-left:3px}
@keyframes playpulse{0%{box-shadow:0 0 0 0 var(--blue-glow)}70%{box-shadow:0 0 0 22px transparent}100%{box-shadow:0 0 0 0 transparent}}
.video-badge{position:absolute;left:16px;top:14px;z-index:2;font-size:12px;font-weight:700;color:var(--ink-2);background:rgba(6,7,14,.6);border:1px solid var(--line);padding:5px 11px;border-radius:8px}
.case-body{padding:26px 28px 30px}
.case-tag{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--blue-bright);text-transform:uppercase}
.case-body h3{font-size:21px;font-weight:800;margin:8px 0 18px}
.case-steps{display:flex;flex-direction:column;gap:12px}
.case-step{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start}
.case-step .lbl{font-size:11px;font-weight:800;color:var(--ink-3);background:rgba(255,255,255,.05);border:1px solid var(--line);padding:4px 9px;border-radius:7px;white-space:nowrap;letter-spacing:.04em}
.case-step.out .lbl{color:var(--blue-bright);border-color:var(--line-strong);background:rgba(22,104,234,.12)}
.case-step p{font-size:14.5px;color:var(--ink-2);line-height:1.55}
.case.feat{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);align-items:stretch}
.case.feat .case-video{aspect-ratio:auto;min-height:340px;border-bottom:0;border-right:1px solid var(--line)}
.case.feat .case-body{padding:38px 40px;align-self:center}
.case.feat .case-body h3{font-size:27px;margin-bottom:22px}
.case.feat .case-step p{font-size:15.5px}

/* ============ pricing (服务套餐) ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.price{display:flex;flex-direction:column;padding:34px 30px 32px;position:relative}
.price.feat{border-color:var(--blue);box-shadow:0 24px 60px -28px var(--blue-glow);transform:translateY(-8px)}
.price-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--blue);color:#fff;font-size:12px;font-weight:800;letter-spacing:.08em;padding:6px 16px;border-radius:999px;box-shadow:0 8px 20px -8px var(--blue-glow)}
.price .tier{font-size:21px;font-weight:800;color:var(--ink)}
.price .tier-sub{font-size:13.5px;color:var(--ink-3);margin-top:6px;line-height:1.5}
.price-amt{display:flex;align-items:baseline;gap:3px;margin:22px 0 4px;font-family:var(--font-en);font-weight:800;color:var(--ink);font-size:42px;line-height:1}
.price-amt .cur{font-size:22px;font-weight:700;color:var(--ink-2)}
.price-amt .per{font-size:14px;font-weight:600;color:var(--ink-3);font-family:var(--font-cn)}
.price-feat{list-style:none;display:flex;flex-direction:column;gap:13px;margin:24px 0 28px;padding-top:24px;border-top:1px solid var(--line)}
.price-feat li{display:grid;grid-template-columns:20px 1fr;gap:11px;align-items:start;font-size:14.5px;color:var(--ink-2);line-height:1.45}
.price-feat li svg{width:20px;height:20px;margin-top:1px}
.price-feat li.on svg{color:var(--blue-bright)}
.price-feat li.on b{color:var(--ink);font-weight:700}
.price-feat li.off{color:var(--ink-3);opacity:.6}
.price-feat li.off svg{color:var(--ink-3)}
.price .btn-block{margin-top:auto;width:100%;justify-content:center}
.price-note{text-align:center;font-size:13px;color:var(--ink-3);margin-top:26px}
.price-divide{text-align:center;max-width:780px;margin:74px auto 0;padding-top:62px;border-top:1px solid var(--line)}
.price-divide .eyebrow{margin-bottom:18px}
.price-divide h3{font-size:30px;font-weight:800;line-height:1.22;margin-bottom:14px;letter-spacing:-.01em}
.price-divide p{font-size:15.5px;color:var(--ink-2);line-height:1.65}
.price-divide+.price-grid{margin-top:42px}


/* ============ MCP extend ============ */
.ext-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.ext{display:flex;gap:22px;align-items:flex-start}
.ext .icon-badge{width:54px;height:54px;flex:none}
.ext h3{font-size:20px;font-weight:800;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.ext h3 .pill{font-family:var(--font-en);font-size:11px;font-weight:700;color:var(--blue-bright);border:1px solid var(--line-strong);padding:3px 9px;border-radius:7px;letter-spacing:.04em}
.ext p{font-size:15px;color:var(--ink-2);line-height:1.6}

/* ============ service (陪跑) ============ */
.serve-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.serve{position:relative;padding-top:30px}
.serve .step-num{font-family:var(--font-en);font-size:54px;font-weight:800;line-height:.8;color:transparent;-webkit-text-stroke:1.5px var(--line-strong);position:absolute;top:-6px;right:14px;opacity:.7}
.serve h3{font-size:19px;font-weight:800;margin-bottom:10px}
.serve p{font-size:14px;color:var(--ink-2);line-height:1.55}

/* why us */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}
.why h3{font-size:18px;font-weight:800;margin-bottom:8px}
.why p{font-size:14px;color:var(--ink-2)}

/* ============ CTA + form ============ */
.cta-band{
  background:linear-gradient(135deg,rgba(22,104,234,.16),rgba(28,39,201,.08));
  border:1px solid var(--line-strong);border-radius:var(--radius-lg);
  padding:54px;display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,var(--blue-glow),transparent 70%);top:-160px;right:-80px;filter:blur(40px);opacity:.5}
.cta-copy h2{font-size:clamp(28px,3vw,40px);font-weight:900;line-height:1.15;margin-bottom:16px;letter-spacing:-.01em}
.cta-copy p{font-size:17px;color:var(--ink-2)}
.cta-list{margin-top:24px;display:flex;flex-direction:column;gap:11px}
.cta-list .li{display:flex;align-items:center;gap:11px;font-size:15px;color:var(--ink)}
.cta-list .li svg{width:20px;height:20px;color:var(--blue-bright);flex:none}
.form{background:rgba(8,10,18,.7);border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:relative;z-index:1}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.field label .req{color:var(--blue-bright)}
.field input,.field textarea{
  width:100%;font-family:var(--font-cn);font-size:15px;color:var(--ink);
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:11px;padding:13px 15px;
  transition:border-color .2s,box-shadow .2s;
}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--blue-bright);box-shadow:0 0 0 3px rgba(22,104,234,.18)}
.field textarea{resize:vertical;min-height:84px}
.consent{display:flex;align-items:flex-start;gap:10px;font-size:12.5px;color:var(--ink-3);margin:6px 0 18px;line-height:1.5}
.consent input{margin-top:3px;accent-color:var(--blue)}
.consent a{color:var(--blue-bright)}
.form .btn{width:100%}
.form-ok{display:none;text-align:center;padding:30px 10px}
.form-ok.show{display:block}
.form-ok .ok-ic{width:60px;height:60px;border-radius:50%;background:rgba(22,104,234,.15);border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;color:var(--blue-bright)}
.form-ok h4{font-size:20px;font-weight:800;margin-bottom:8px}
.form-ok p{font-size:14.5px;color:var(--ink-2)}

/* ============ footer ============ */
.footer{border-top:1px solid var(--line);background:var(--bg-2);padding:64px 0 34px;margin-top:30px}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid var(--line)}
.foot-brand img{height:38px;margin-bottom:18px}
.foot-brand p{font-size:15px;color:var(--ink-2);max-width:320px;line-height:1.6}
.foot-col h5{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:16px}
.foot-col a,.foot-col .ft{display:block;font-size:14px;color:var(--ink-3);margin-bottom:11px;transition:color .2s}
.foot-col a:hover{color:var(--blue-bright)}
.ft-phone{display:flex !important;align-items:center;gap:9px;font-size:19px !important;font-weight:800;color:var(--ink) !important;font-family:var(--font-en);letter-spacing:.01em;margin-bottom:18px !important}
.ft-phone svg{width:17px;height:17px;color:var(--blue-bright);flex:none}
.ft-phone:hover{color:var(--blue-bright) !important}
.ft-wechat{display:flex;flex-direction:column;gap:9px;align-items:flex-start}
.ft-wechat img{width:118px;height:118px;border-radius:10px;background:#fff;padding:8px;box-shadow:0 8px 24px -12px rgba(20,50,120,.35)}
.ft-wechat span{font-size:12.5px;color:var(--ink-3)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:24px;flex-wrap:wrap;font-size:13px;color:var(--ink-3)}
.foot-bottom .tbd{color:var(--blue-bright);opacity:.85}
.partner{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--ink-3)}
.partner img{height:26px;opacity:.9}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* tab panel anim */
.scene-grid{animation:fadeUp .45s var(--ease)}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ============ responsive ============ */
@media(max-width:1080px){
  .cap-grid{grid-template-columns:repeat(3,1fr)}
  .scene-grid{grid-template-columns:repeat(3,1fr)}
  .flow{grid-template-columns:repeat(3,1fr);gap:30px 0}
  .flow-line{display:none}
}
@media(max-width:920px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hub{max-width:420px}
  .cta-band{grid-template-columns:1fr;gap:34px;padding:34px}
  .foot-top{grid-template-columns:1fr 1fr}
  .case-grid,.ext-grid{grid-template-columns:1fr}
  .case.feat{grid-template-columns:1fr}
  .case.feat .case-video{border-right:0;border-bottom:1px solid var(--line);min-height:0;aspect-ratio:16/10}
  .price-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}
  .price.feat{transform:none}
  .serve-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:680px){
  .section-pad{padding:70px 0}
  .wrap{padding:0 20px}
  .cap-grid,.scene-grid,.serve-grid,.why-grid{grid-template-columns:1fr 1fr}
  .flow{grid-template-columns:1fr 1fr}
  .form .row{grid-template-columns:1fr}
  .hero-meta{gap:20px}
  .foot-top{grid-template-columns:1fr}
}
@media(max-width:460px){
  .cap-grid,.scene-grid,.serve-grid,.why-grid,.flow{grid-template-columns:1fr}
  .hero-cta{flex-direction:column;align-items:stretch}
  .tabs{gap:7px}
  .tab{font-size:13px;padding:8px 13px}
}

/* mobile menu */
.mmenu{position:fixed;inset:0;z-index:60;background:rgba(6,7,14,.97);backdrop-filter:blur(8px);display:none;flex-direction:column;padding:80px 28px;gap:6px}
.mmenu.open{display:flex}
.mmenu a{font-size:22px;font-weight:700;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink)}
.mmenu .btn{margin-top:20px}
.mmenu-close{position:absolute;top:22px;right:24px;background:none;border:0;color:var(--ink);cursor:pointer}