/* ==========================================================
   青提 AI · 官网样式
   ========================================================== */
:root{
  --bg:#04060a;
  --bg-2:#080d14;
  --tint:255,255,255;
  --panel:rgba(var(--tint),.035);
  --panel-2:rgba(var(--tint),.055);
  --line:rgba(var(--tint),.09);
  --line-2:rgba(var(--tint),.16);
  --ink:#e9f2f6;
  --ink-2:#a9bac8;
  --ink-3:#6f8496;
  --green:#3ddc97;
  --cyan:#4cc9f0;
  --violet:#7c5cff;
  --amber:#ffb454;
  --radius:18px;
  --wrap:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:"Inter","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{margin:0;line-height:1.18;letter-spacing:-.02em;font-weight:700}
p{margin:0}
::selection{background:var(--green);color:#04120c}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 clamp(18px,3.6vw,28px)}
.grad{
  background:linear-gradient(100deg,var(--green) 0%,var(--cyan) 45%,var(--violet) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* 噪点 + 鼠标光晕 */
.grain{
  position:fixed;inset:0;z-index:9998;pointer-events:none;opacity:.045;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/></filter><rect width='120' height='120' filter='url(%23n)'/></svg>");
}
.cursor-glow{
  position:fixed;left:0;top:0;width:620px;height:620px;margin:-310px 0 0 -310px;z-index:1;
  pointer-events:none;border-radius:50%;opacity:.55;
  background:radial-gradient(circle,rgba(61,220,151,.11) 0%,rgba(76,201,240,.05) 40%,transparent 68%);
  transition:opacity .6s ease;will-change:transform;
}
.scroll-progress{position:fixed;left:0;top:0;height:2px;width:100%;z-index:9999;background:transparent}
.scroll-progress i{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--green),var(--cyan),var(--violet));box-shadow:0 0 12px rgba(61,220,151,.6);
}

/* ---------------- NAV ---------------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:900;transition:background .4s var(--ease),border-color .4s,border-bottom .4s}
.nav.solid{background:rgba(var(--scrim),.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--wrap);margin:0 auto;height:72px;display:flex;align-items:center;gap:28px;
  padding-left:max(clamp(18px,3.6vw,28px),env(safe-area-inset-left));
  padding-right:max(clamp(18px,3.6vw,28px),env(safe-area-inset-right));
  padding-top:env(safe-area-inset-top)}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:.02em}
.brand-mark{position:relative;width:26px;height:26px;display:inline-block;transform:rotate(-20deg)}
.brand-mark i{position:absolute;border-radius:50%;display:block}
.brand-mark i:nth-child(1){inset:0;border:2px solid var(--green);opacity:.85}
.brand-mark i:nth-child(2){inset:5px;border:2px solid var(--cyan);opacity:.7}
.brand-mark i:nth-child(3){inset:10px;background:var(--violet);box-shadow:0 0 14px var(--violet)}
.brand-text em{font-style:normal;color:var(--green)}
.nav-links{display:flex;gap:6px;margin-left:auto}
.nav-links a{
  position:relative;padding:8px 14px;border-radius:10px;font-size:14.5px;color:var(--ink-2);
  transition:color .25s,background .25s;
}
.nav-links a:hover{color:#fff;background:var(--panel)}
.nav-links a.active{color:#fff;background:var(--panel-2)}
.nav-cta{margin-left:6px}
.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);background:var(--panel);border-radius:12px;cursor:pointer}
.nav-toggle span{display:block;width:16px;height:1.6px;margin:4px auto;background:var(--ink)}

/* ---------------- BUTTONS ---------------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:12px 22px;border-radius:999px;
  font-size:14.5px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .3s var(--ease);
}
.btn-primary{
  background:linear-gradient(100deg,var(--green),var(--cyan));color:#04130d;
  box-shadow:0 10px 34px -10px rgba(61,220,151,.65);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 44px -10px rgba(61,220,151,.8)}
.btn-line{border-color:var(--line-2);color:var(--ink);background:var(--panel)}
.btn-line:hover{border-color:var(--green);color:var(--green);transform:translateY(-2px)}
.btn-ghost{padding:9px 18px;border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--green);color:var(--green)}
.btn-lg{padding:15px 30px;font-size:15.5px}
.arw{transition:transform .3s var(--ease);font-style:normal}
.btn:hover .arw{transform:translateX(4px)}

/* ---------------- HERO ---------------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden;padding:120px 0 80px}
#heroCanvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero-veil{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(1000px 600px at 12% 20%,rgba(61,220,151,.13),transparent 60%),
    radial-gradient(900px 620px at 88% 78%,rgba(124,92,255,.16),transparent 62%),
    linear-gradient(180deg,rgba(var(--scrim),.55) 0%,rgba(var(--scrim),.2) 40%,var(--bg) 100%);
}
.hero-inner{position:relative;z-index:3;max-width:var(--wrap);margin:0 auto;width:100%;
  padding-left:max(clamp(18px,3.6vw,28px),env(safe-area-inset-left));
  padding-right:max(clamp(18px,3.6vw,28px),env(safe-area-inset-right))}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;padding:7px 16px;border:1px solid var(--line-2);
  border-radius:999px;background:rgba(var(--tint),.03);font-size:13px;color:var(--ink-2);margin-bottom:26px;
}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 4px rgba(61,220,151,.18);animation:pulse 2.2s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 9px rgba(61,220,151,0)}}
.hero-title{font-size:clamp(42px,7.4vw,86px);font-weight:800;letter-spacing:-.035em}
.hero-title .line{display:block}
.hero-sub{max-width:660px;margin-top:26px;font-size:clamp(15px,1.6vw,18.5px);color:var(--ink-2)}
.hero-actions{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:60px;padding-top:34px;border-top:1px solid var(--line);
  position:relative;
}
.hero-stats::before{content:"";position:absolute;top:-1px;left:0;width:180px;height:1px;background:linear-gradient(90deg,var(--green),transparent)}
.stat{min-width:120px}
.stat b{display:block;font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;background:linear-gradient(180deg,#fff,#9fb4c4);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13px;color:var(--ink-3);letter-spacing:.06em}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;font-size:12px;color:var(--ink-3);letter-spacing:.18em;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-hint i{width:1px;height:34px;background:linear-gradient(180deg,var(--green),transparent);animation:drop 1.8s infinite}
@keyframes drop{0%{transform:scaleY(.2);transform-origin:top}60%{transform:scaleY(1);transform-origin:top}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------------- MARQUEE ---------------- */
.marquee{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(var(--tint),.015);padding:16px 0}
.marquee-track{display:flex;gap:52px;width:max-content;animation:slide 34s linear infinite;white-space:nowrap}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee span{font-size:14px;color:var(--ink-3);letter-spacing:.1em;display:inline-flex;align-items:center;gap:52px}
.marquee span::after{content:"";width:5px;height:5px;border-radius:50%;background:var(--green);opacity:.6}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------------- SECTION ---------------- */
.section{position:relative;padding:120px 0;z-index:2}
.section-alt{background:linear-gradient(180deg,transparent,rgba(var(--tint),.018),transparent)}
.section::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(rgba(var(--tint),.022) 1px,transparent 1px),linear-gradient(90deg,rgba(var(--tint),.022) 1px,transparent 1px);background-size:70px 70px;mask-image:radial-gradient(ellipse 80% 60% at 50% 30%,#000 20%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 30%,#000 20%,transparent 75%)}
.sec-head{max-width:760px;margin-bottom:56px}
.sec-tag{
  display:inline-block;font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--green);
  margin-bottom:16px;padding:5px 12px;border:1px solid rgba(61,220,151,.3);border-radius:999px;background:rgba(61,220,151,.06);
}
.sec-head h2{font-size:clamp(28px,4vw,46px)}
.sec-head p{margin-top:18px;color:var(--ink-2);font-size:16px}

/* ---------------- PRODUCT CARDS (3D tilt) ---------------- */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:26px;perspective:1400px}
/* 宽屏：每行 3 张（6 列网格，卡片各跨 2 列）
   若最后一排只剩 2 张，则由 JS 打 data-last="2" 让它们跨 3 列加宽铺满，避免留空 */
@media (min-width:1180px){
  .prod-grid{grid-template-columns:repeat(6,1fr)}
  .pcard{grid-column:span 2}
  .prod-grid[data-last="2"] .pcard:nth-last-child(-n+2){grid-column:span 3}
  .prod-grid[data-last="1"] .pcard:last-child{grid-column:2 / span 4}
}
@media (min-width:681px) and (max-width:1179px){ .prod-grid{grid-template-columns:repeat(2,1fr)} }
@media (max-width:680px){ .prod-grid{grid-template-columns:1fr} }
.pcard{
  position:relative;padding:34px 30px 30px;border-radius:24px;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(var(--tint),.055),rgba(var(--tint),.012));
  transform-style:preserve-3d;transition:transform .5s var(--ease),border-color .4s;overflow:hidden;cursor:pointer;
}
.pcard:hover{border-color:var(--line-2)}
.pcard .glare{position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .4s;background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(var(--tint),.14),transparent 45%)}
.pcard:hover .glare{opacity:1}
.pcard .halo{position:absolute;width:280px;height:280px;right:-90px;top:-110px;border-radius:50%;filter:blur(60px);opacity:.32;background:var(--accent,#3ddc97)}
.pcard .tag{font-size:12px;letter-spacing:.16em;color:var(--accent,#3ddc97);text-transform:uppercase}
.pcard h3{margin-top:14px;font-size:26px;transform:translateZ(38px)}
.pcard .en{font-size:12.5px;color:var(--ink-3);letter-spacing:.14em;margin-top:4px;transform:translateZ(30px)}
.pcard .desc{margin-top:18px;font-size:14.6px;color:var(--ink-2);min-height:84px;transform:translateZ(24px)}
.pcard .metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px;transform:translateZ(30px)}
.pcard .metrics div{border-top:1px solid var(--line);padding-top:10px}
.pcard .metrics b{display:block;font-size:21px;font-weight:800;letter-spacing:-.02em;color:#fff;font-variant-numeric:tabular-nums}
.pcard .metrics span{font-size:12px;color:var(--ink-3)}
.pcard .go{
  margin-top:26px;display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--accent,#3ddc97);
  transform:translateZ(34px);
}
.pcard .go i{font-style:normal;transition:transform .3s}
.pcard:hover .go i{transform:translateX(5px)}
.pcard .count-pill{position:absolute;right:26px;top:26px;font-size:12px;color:var(--ink-3);border:1px solid var(--line);padding:4px 10px;border-radius:999px;transform:translateZ(30px)}

/* ---------------- TABS / CHIPS ---------------- */
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.tab{
  padding:11px 20px;border-radius:999px;border:1px solid var(--line);background:var(--panel);
  font-size:14.5px;color:var(--ink-2);cursor:pointer;transition:all .3s var(--ease);font-family:inherit;
}
.tab:hover{color:#fff;border-color:var(--line-2)}
.tab.on{background:linear-gradient(100deg,var(--green),var(--cyan));color:#04130d;border-color:transparent;font-weight:700;box-shadow:0 10px 30px -12px rgba(61,220,151,.7)}
.tab small{opacity:.7;margin-left:6px}
.mod-chips{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:22px}
.chip{
  padding:7px 14px;border-radius:10px;border:1px solid var(--line);background:rgba(var(--tint),.02);
  font-size:13px;color:var(--ink-2);cursor:pointer;transition:all .25s;font-family:inherit;
}
.chip:hover{color:#fff;border-color:var(--line-2)}
.chip.on{background:rgba(61,220,151,.14);border-color:rgba(61,220,151,.45);color:var(--green)}
.chip b{font-weight:700;margin-right:6px;opacity:.75}
.feat-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:24px;font-size:14px;color:var(--ink-3)}
.feat-meta b{color:#fff;font-size:18px;font-variant-numeric:tabular-nums}
.feat-meta .lnk{color:var(--green);font-size:13.5px;transition:opacity .25s}
.feat-meta .lnk:hover{opacity:.75}
.feat-meta .bar{height:5px;flex:1;min-width:120px;border-radius:99px;background:rgba(var(--tint),.07);overflow:hidden}
.feat-meta .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--green),var(--cyan));transition:width .6s var(--ease)}

/* ---------------- FEATURE GRID ---------------- */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,272px),1fr));gap:14px}
.fcard{
  position:relative;padding:20px 20px 18px;border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(165deg,rgba(var(--tint),.04),rgba(var(--tint),.012));
  transition:transform .35s var(--ease),border-color .35s,box-shadow .35s;
}
.fcard:hover{transform:translateY(-6px) scale(1.015);border-color:rgba(61,220,151,.4);box-shadow:0 22px 50px -26px rgba(0,0,0,.9),0 0 0 1px rgba(61,220,151,.1) inset}
.fcard .k{
  position:absolute;left:20px;top:18px;font-size:11px;font-weight:800;letter-spacing:.1em;color:var(--ink-3);
  border:1px solid var(--line);border-radius:6px;padding:1px 6px;
}
.fcard h4{margin:34px 0 8px;font-size:16.5px;font-weight:700;letter-spacing:-.01em}
.fcard p{font-size:13.8px;color:var(--ink-3);line-height:1.65}
.fcard .mkey{position:absolute;right:16px;top:16px;font-size:11px;color:rgba(var(--tint),.22);font-weight:800;font-size:22px;line-height:1}
.mod-head{grid-column:1/-1;display:flex;align-items:baseline;gap:14px;margin:22px 0 4px;padding-top:16px;border-top:1px dashed var(--line)}
.mod-head h3{font-size:20px}
.mod-head span{font-size:13.5px;color:var(--ink-3)}
.mod-head i{font-style:normal;font-size:12px;color:var(--green);border:1px solid rgba(61,220,151,.35);border-radius:6px;padding:2px 8px}

/* ---------------- MODELS ---------------- */
.models-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.models-copy h2{font-size:clamp(26px,3.6vw,42px);margin:14px 0 18px}
.models-copy p{color:var(--ink-2);max-width:560px}
.model-cards{margin-top:32px;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px}
.mcard{
  padding:16px 18px;border-radius:14px;border:1px solid var(--line);background:var(--panel);
  transition:transform .35s var(--ease),border-color .35s,background .35s;
}
.mcard:hover{transform:translateY(-4px) rotateX(4deg);border-color:rgba(124,92,255,.5);background:rgba(124,92,255,.06)}
.mcard .v{display:flex;align-items:center;justify-content:space-between;gap:8px}
.mcard .v b{font-size:16px}
.mcard .v em{font-style:normal;font-size:11.5px;color:var(--ink-3);border:1px solid var(--line);border-radius:99px;padding:2px 9px}
.mcard p{font-size:13px;color:var(--ink-3);margin-top:8px}
.mcard .g{margin-top:10px;font-size:12px;color:var(--cyan)}
.models-visual{position:relative;height:460px;border-radius:26px;border:1px solid var(--line);
  background:radial-gradient(circle at 50% 50%,rgba(124,92,255,.12),transparent 65%),rgba(var(--tint),.012);overflow:hidden}
#knotCanvas{position:absolute;inset:0;width:100%;height:100%}
.ring-label{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;pointer-events:none}
.ring-label b{display:block;font-size:64px;font-weight:800;letter-spacing:-.05em;background:linear-gradient(180deg,#fff,rgba(var(--tint),.25));-webkit-background-clip:text;background-clip:text;color:transparent}
.ring-label span{font-size:12.5px;letter-spacing:.2em;color:var(--ink-3)}

/* ---------------- FLOW ---------------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;perspective:1200px}
.fstep{
  position:relative;padding:28px 24px;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(var(--tint),.05),rgba(var(--tint),.01));
  transition:transform .45s var(--ease),border-color .4s;transform-style:preserve-3d;
}
.fstep:hover{transform:translateY(-8px) rotateX(6deg) rotateY(-4deg);border-color:rgba(61,220,151,.45)}
.fstep .t{font-size:38px;font-weight:800;letter-spacing:-.04em;background:linear-gradient(180deg,rgba(var(--tint),.9),rgba(var(--tint),.12));-webkit-background-clip:text;background-clip:text;color:transparent}
.fstep h3{margin:10px 0 10px;font-size:19px}
.fstep p{font-size:14px;color:var(--ink-3)}
.fstep:not(:last-child)::after{content:"";position:absolute;right:-12px;top:50%;width:14px;height:1px;background:var(--line-2)}

/* ---------------- COVERFLOW ---------------- */
.coverflow{position:relative;padding:20px 0 0}
.cf-viewport{overflow:hidden;padding:26px 0 10px}
.cf-stage{position:relative;height:min(62vh,540px);transform-style:preserve-3d;perspective:1600px;cursor:grab}
.cf-stage:active{cursor:grabbing}
.cf-item{
  position:absolute;left:50%;top:50%;border-radius:16px;overflow:hidden;border:1px solid var(--line-2);
  background:var(--bg-2);box-shadow:0 40px 90px -40px #000;
  transition:transform .7s var(--ease),opacity .7s var(--ease),filter .7s var(--ease);
  will-change:transform;
}
.cf-item.land{width:min(620px,70vw);aspect-ratio:16/9}
.cf-item.port{width:min(268px,37vw);aspect-ratio:9/16}
.cf-item img{width:100%;height:100%;object-fit:cover;object-position:center}
.cf-item.on{box-shadow:0 50px 110px -40px #000,0 0 0 1px rgba(61,220,151,.35)}
.cf-item::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(var(--scrim),.85));opacity:0;transition:opacity .5s}
.cf-item:not(.on)::after{opacity:1}
.cf-ctrl{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:34px}
.cf-btn{
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line-2);background:var(--panel);
  color:var(--ink);font-size:24px;line-height:1;cursor:pointer;transition:all .3s;
}
.cf-btn:hover{border-color:var(--green);color:var(--green);transform:scale(1.06)}
.cf-dots{display:flex;gap:8px}
.cf-dots i{width:7px;height:7px;border-radius:50%;background:rgba(var(--tint),.2);cursor:pointer;transition:all .3s}
.cf-dots i.on{background:var(--green);width:24px;border-radius:99px;box-shadow:0 0 12px rgba(61,220,151,.7)}
.cf-caption{text-align:center;margin-top:22px}
.cf-caption b{display:block;font-size:20px}
.cf-caption span{font-size:14px;color:var(--ink-3)}

/* ---------------- ENV TABLE ---------------- */
.table-wrap{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--panel)}
.env-table{width:100%;border-collapse:collapse;font-size:14.6px}
.env-table th{
  text-align:left;padding:16px 24px;background:rgba(var(--tint),.045);font-size:12.5px;letter-spacing:.16em;
  color:var(--ink-3);text-transform:uppercase;font-weight:600;
}
.env-table td{padding:16px 24px;border-top:1px solid var(--line);color:var(--ink-2)}
.env-table tr:hover td{background:rgba(var(--tint),.025)}
.env-table td:first-child{color:#fff;font-weight:600;width:30%}
.env-table td:nth-child(2){color:var(--green);width:32%}

/* ---------------- CTA ---------------- */
.cta-sec{position:relative;overflow:hidden;text-align:center;padding:140px 0}
#ctaCanvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.85}
.cta-inner{position:relative;z-index:2}
.cta-inner h2{font-size:clamp(28px,4.6vw,54px)}
.cta-inner p{margin-top:20px;color:var(--ink-2);font-size:16.5px}
.cta-actions{display:flex;gap:14px;justify-content:center;margin-top:38px;flex-wrap:wrap}
.cta-note{margin-top:34px;font-size:13px;color:var(--ink-3);letter-spacing:.08em}

/* ---------------- FOOTER ---------------- */
.footer{border-top:1px solid var(--line);padding:64px 0 0;background:linear-gradient(180deg,transparent,rgba(var(--tint),.02))}
.footer-inner{display:grid;grid-template-columns:1.4fr 2fr;gap:48px;padding-bottom:48px}
.footer-brand b{display:inline-block;font-size:18px;margin-left:10px}
.footer-brand p{margin-top:14px;font-size:13.8px;color:var(--ink-3);max-width:340px}
.footer-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,148px),1fr));gap:24px}
.footer-cols h5 a{color:inherit}
.footer-cols h5{margin:0 0 12px;font-size:13px;letter-spacing:.14em;color:var(--ink-3);text-transform:uppercase;font-weight:600}
.footer-cols a{display:block;font-size:14px;color:var(--ink-2);padding:4px 0;transition:color .25s}
.footer-cols a:hover{color:var(--green)}
.footer-bottom{border-top:1px solid var(--line);padding:20px clamp(18px,3.6vw,28px);max-width:var(--wrap);margin:0 auto;padding-bottom:calc(20px + env(safe-area-inset-bottom));display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--ink-3)}

/* ---------------- REVEAL ---------------- */
.reveal{opacity:0;transform:translateY(34px) rotateX(-8deg);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------------- RESPONSIVE ----------------
   断点：≥1600 超大屏 | 1280~1599 桌面 | 1025~1279 笔记本
        821~1024 平板横屏 | 681~820 平板竖屏 | 481~680 手机 | ≤480 小屏手机
   ------------------------------------------------ */
/* 移动端 HERO 高度用 svh，避免浏览器地址栏导致跳动 */
@supports (height:100svh){ .hero{min-height:100svh} }

@media (min-width:1600px){
  .wrap{max-width:1320px}
  .hero-title{font-size:clamp(56px,5.4vw,96px)}
  .section{padding:140px 0}
}

/* 笔记本 / 小桌面 */
@media (max-width:1279px){
  .models-wrap{gap:36px}
  .models-visual{height:420px}
  .hero-stats{margin-top:48px}
}

/* 平板（含横屏 iPad） */
@media (max-width:1024px){
  .section{padding:92px 0}
  .models-wrap{grid-template-columns:1fr;gap:34px}
  .models-visual{height:400px;order:-1}
  .flow-grid{grid-template-columns:1fr 1fr}
  .fstep:not(:last-child)::after{display:none}
  .footer-inner{grid-template-columns:1fr;gap:30px}
  .hero-stats{gap:12px}
  .stat{min-width:100px}
  .cf-stage{height:min(56vh,470px)}
  .cf-item.land{width:min(520px,72vw)}
  .cf-item.port{width:min(230px,34vw)}
}

/* 平板竖屏：导航收成抽屉 */
@media (max-width:880px){
  .nav-links{
    position:fixed;top:calc(72px + env(safe-area-inset-top));left:14px;right:14px;
    flex-direction:column;gap:4px;padding:14px;
    background:rgba(8,12,18,.97);backdrop-filter:blur(18px);
    border:1px solid var(--line);border-radius:18px;
    transform:translateY(-14px);opacity:0;pointer-events:none;transition:all .3s var(--ease);
    max-height:calc(100vh - 100px);overflow:auto;
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{padding:12px 14px;font-size:15.5px}
  .nav-cta{display:none}
  .nav-toggle{display:block}
}

/* 手机 */
@media (max-width:680px){
  .wrap,.nav-inner,.footer-bottom{padding-left:18px;padding-right:18px}
  .section{padding:72px 0}
  .hero{padding:100px 0 56px}
  .hero-badge{font-size:12px;padding:6px 13px}
  .hero-actions{gap:10px}
  .hero-actions .btn{flex:1;justify-content:center;min-width:140px}
  .hero-stats{margin-top:40px;padding-top:26px;gap:14px 18px}
  .stat{min-width:calc(50% - 18px)}
  .scroll-hint{display:none}
  .flow-grid{grid-template-columns:1fr}
  .model-cards{grid-template-columns:1fr}
  .models-visual{height:320px}
  .ring-label b{font-size:52px}
  .feat-grid{grid-template-columns:1fr}
  .sec-head{margin-bottom:38px}
  .tabs{gap:8px}
  .tab{padding:9px 15px;font-size:13.6px}
  .mod-chips{gap:7px}
  .chip{padding:6px 11px;font-size:12.4px}
  .coverflow{padding-top:10px}
  .cf-stage{height:min(52vh,400px)}
  .cf-item.land{width:min(360px,82vw)}
  .cf-item.port{width:min(168px,40vw)}
  .cf-btn{width:40px;height:40px;font-size:21px}
  .cta-sec{padding:96px 0}
  .footer-cols{grid-template-columns:1fr 1fr;gap:20px}
  .footer-bottom{font-size:11.5px}
  .marquee-track{gap:32px}
  .marquee span{gap:32px;font-size:12.5px}
}

/* 小屏手机 */
@media (max-width:400px){
  body{font-size:15px}
  .hero-title{font-size:clamp(32px,10.5vw,44px)}
  .brand-text{font-size:17px}
  .stat{min-width:100%}
  .hero-stats{gap:10px}
  .cf-stage{height:min(48vh,340px)}
  .cf-item.land{width:min(300px,86vw)}
  .cf-item.port{width:min(140px,42vw)}
  .footer-cols{grid-template-columns:1fr}
}

/* 表格卡片化（手机 / 窄屏） */
@media (max-width:760px){
  .table-wrap{border-radius:16px}
  .env-table thead{display:none}
  .env-table tr{display:block;padding:14px 16px;border-top:1px solid var(--line)}
  .env-table tbody tr:first-child{border-top:0}
  .env-table td{display:block;padding:5px 0;border:0;width:auto !important;font-size:14px}
  .env-table td::before{
    content:attr(data-label);display:block;font-size:11px;letter-spacing:.12em;
    color:var(--ink-3);text-transform:uppercase;margin-bottom:1px;
  }
  .env-table td:first-child{font-size:15.5px;padding-bottom:6px}
  .env-table td:first-child::before{display:none}
  .env-table tr:hover td{background:transparent}
}

/* 只在支持真悬停的设备上启用 hover 位移，避免触屏点后"卡住" */
@media (hover:hover) and (pointer:fine){
  .fcard:hover{transform:translateY(-6px) scale(1.015);border-color:rgba(61,220,151,.4);box-shadow:0 22px 50px -26px rgba(0,0,0,.9),0 0 0 1px rgba(61,220,151,.1) inset}
  .mcard:hover{transform:translateY(-4px) rotateX(4deg);border-color:rgba(124,92,255,.5);background:rgba(124,92,255,.06)}
  .fstep:hover{transform:translateY(-8px) rotateX(6deg) rotateY(-4deg);border-color:rgba(61,220,151,.45)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 44px -10px rgba(61,220,151,.8)}
  .btn-line:hover{border-color:var(--green);color:var(--green);transform:translateY(-2px)}
  .tab:hover{color:#fff;border-color:var(--line-2)}
  .chip:hover{color:#fff;border-color:var(--line-2)}
  .cf-btn:hover{border-color:var(--green);color:var(--green);transform:scale(1.06)}
  .footer-cols a:hover{color:var(--green)}
  .nav-links a:hover{color:#fff;background:var(--panel)}
}
/* 触屏默认态（去掉上面规则里的 hover 依赖） */
@media (hover:none){
  .fcard:hover,.mcard:hover,.fstep:hover{transform:none}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}

/* ==========================================================
   视频轮播 + 弹窗播放器
   ========================================================== */
.cf-item video{width:100%;height:100%;object-fit:cover;object-position:center;display:block;background:var(--bg-2)}
.cf-item::before{content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:linear-gradient(180deg,transparent 62%,rgba(var(--scrim),.55));opacity:0;transition:opacity .4s var(--ease)}
.cf-item.on::before{opacity:1}
.cf-badge{position:absolute;left:14px;bottom:14px;z-index:3;padding:5px 13px;border-radius:999px;
  font-size:12px;font-weight:600;color:#04130d;background:linear-gradient(100deg,var(--green),var(--cyan));
  opacity:0;transform:translateY(8px);transition:all .35s var(--ease);pointer-events:none}
.cf-item.on .cf-badge{opacity:1;transform:none}

.vmodal{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;
  padding:26px;opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s}
.vmodal.open{opacity:1;visibility:visible}
.vm-backdrop{position:absolute;inset:0;background:rgba(3,5,8,.88);backdrop-filter:blur(10px)}
.vm-box{position:relative;z-index:2;width:min(1080px,100%);transform:scale(.95) translateY(16px);
  transition:transform .42s var(--ease)}
.vmodal.open .vm-box{transform:none}
.vm-stage{position:relative;border-radius:16px;overflow:hidden;border:1px solid var(--line-2);
  background:#000;box-shadow:0 44px 110px -34px #000}
.vm-stage video{width:100%;max-height:min(72vh,640px);display:block;background:#000}
.vm-close{position:absolute;right:0;top:-48px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line-2);background:rgba(10,14,20,.92);color:var(--ink);font-size:23px;
  line-height:1;cursor:pointer;transition:all .3s var(--ease)}
.vm-close:hover{background:var(--green);color:#04130d;border-color:transparent;transform:rotate(90deg)}
.vm-play{position:absolute;inset:0;display:none;align-items:center;justify-content:center;
  cursor:pointer;background:rgba(var(--scrim),.35)}
.vm-play.show{display:flex}
.vm-play span{position:relative;width:76px;height:76px;border-radius:50%;
  background:rgba(var(--tint),.14);border:1px solid rgba(var(--tint),.35);backdrop-filter:blur(6px)}
.vm-play span::after{content:"";position:absolute;left:52%;top:50%;transform:translate(-40%,-50%);
  border-left:23px solid #fff;border-top:14px solid transparent;border-bottom:14px solid transparent}
.vm-cap{display:flex;align-items:baseline;gap:14px;margin-top:16px;flex-wrap:wrap}
.vm-cap b{font-size:19px}
.vm-cap span{font-size:14px;color:var(--ink-3)}
.vm-nav{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px}
.vm-btn{padding:9px 18px;border-radius:999px;border:1px solid var(--line-2);background:var(--panel);
  color:var(--ink);font-family:inherit;font-size:14px;cursor:pointer;transition:all .3s var(--ease)}
.vm-btn:hover{border-color:var(--green);color:var(--green)}
.vm-idx{font-size:13px;color:var(--ink-3);font-variant-numeric:tabular-nums}
@media (max-width:680px){
  .vmodal{padding:14px}
  .vm-close{top:-46px;right:2px;width:36px;height:36px;font-size:20px}
  .vm-stage video{max-height:50vh}
  .vm-cap b{font-size:16.5px}
  .vm-cap span{font-size:13px}
  .vm-nav{justify-content:center;flex-wrap:wrap}
  .vm-btn{padding:8px 14px;font-size:13px}
  .cf-badge{font-size:11px;padding:4px 10px}
}
@media (max-width:400px){
  .vm-stage video{max-height:44vh}
  .cf-item video{height:150px}
}

/* ==========================================================
   导航 · "产品矩阵" 二级下拉菜单
   ========================================================== */
.nav-drop{position:relative}
.nd-btn{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border:0;border-radius:10px;
  background:none;color:var(--ink-2);font-family:inherit;font-size:14.5px;cursor:pointer;
  transition:color .25s,background .25s}
.nd-btn:hover,.nav-drop.open .nd-btn{color:#fff;background:var(--panel-2)}
.nd-arw{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid currentColor;opacity:.75;transition:transform .3s var(--ease)}
.nav-drop.open .nd-arw{transform:rotate(180deg)}
.nd-menu{position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(-10px);
  width:min(680px,86vw);padding:12px;border-radius:18px;z-index:950;
  background:rgba(9,13,19,.97);backdrop-filter:blur(20px);border:1px solid var(--line-2);
  box-shadow:0 34px 90px -34px #000;opacity:0;visibility:hidden;transition:all .3s var(--ease)}
.nd-menu::before{content:"";position:absolute;left:0;right:0;top:-16px;height:16px}
.nav-drop.open .nd-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nd-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.nd-item{display:flex;align-items:flex-start;gap:11px;padding:11px 13px;border-radius:12px;
  transition:background .25s,transform .25s}
.nd-item:hover{background:rgba(var(--tint),.06);transform:translateX(3px)}
.nd-item .dot{width:9px;height:9px;border-radius:50%;margin-top:7px;flex:0 0 auto;background:var(--c);box-shadow:0 0 10px var(--c)}
.nd-item .txt{flex:1;min-width:0}
.nd-item b{display:block;font-size:14.6px;font-weight:600}
.nd-item.cur b{color:var(--c)}
.nd-item.cur{background:rgba(var(--tint),.05)}
.nd-item span{display:block;font-size:12.2px;color:var(--ink-3);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nd-item em{flex:0 0 auto;font-style:normal;font-size:11.5px;color:var(--ink-3);
  border:1px solid var(--line);border-radius:999px;padding:2px 8px;margin-top:3px}
.nd-all{display:block;margin-top:6px;padding:11px 13px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--green);transition:color .25s}
.nd-all:hover{color:var(--cyan)}
@media (max-width:880px){
  .nd-btn{width:100%;justify-content:space-between;padding:12px 14px;font-size:15.5px}
  .nd-menu{position:static;transform:none;width:100%;opacity:1;visibility:visible;display:none;
    background:rgba(var(--tint),.03);border:1px solid var(--line);box-shadow:none;
    margin-top:8px;max-height:54vh;overflow:auto}
  .nav-drop.open .nd-menu{display:block;transform:none}
  .nd-grid{grid-template-columns:1fr}
  .nd-menu::before{display:none}
  .nd-item span{white-space:normal}
}

/* 弹窗：竖屏案例用窄高容器 */
.vmodal.port .vm-box{width:min(460px,100%)}
.vmodal.port .vm-stage video{max-height:74vh}
@media (max-width:680px){
  .vmodal.port .vm-box{width:min(330px,100%)}
  .vmodal.port .vm-stage video{max-height:60vh}
}

/* ==========================================================
   站点 LOGO —— 固定显示像素，无论上传多大都不会撑破布局
   （导航栏 32px 高 / 页脚 28px 高，宽度按比例自适应并限宽）
   ========================================================== */
.brand{gap:10px}
.brand-logo,
.brand > img{
  height:32px !important;
  max-height:32px !important;
  width:auto !important;
  max-width:150px !important;
  object-fit:contain !important;
  display:block !important;
  flex:0 0 auto !important;
  border-radius:7px;
}
.brand-text{font-weight:800;font-size:19px;letter-spacing:.01em;color:var(--ink);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}

.footer-brand{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.footer-logo,
.footer-brand > img{
  height:28px !important;
  max-height:28px !important;
  width:auto !important;
  max-width:170px !important;
  object-fit:contain !important;
  display:block !important;
  border-radius:6px;
}
.footer-brand b{display:inline-block;font-size:18px;margin-left:0}
.footer-brand p{flex:1 1 100%;margin-top:6px}

@media (max-width:680px){
  .brand-logo,.brand > img{height:26px !important;max-height:26px !important;max-width:110px !important}
  .brand-text{font-size:17px}
  .footer-logo,.footer-brand > img{height:24px !important;max-height:24px !important;max-width:130px !important}
}

/* ==========================================================
   授权查询（查询区 / 证书 / 未授权提示）
   ========================================================== */
.lic-hero{padding:calc(112px + env(safe-area-inset-top)) 0 40px;position:relative;overflow:hidden}
.lic-hero::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(800px 420px at 50% 0%,rgba(61,220,151,.14),transparent 65%)}
.lic-hero-inner{position:relative;text-align:center;max-width:820px;margin:0 auto}
.lic-hero h1{font-size:clamp(30px,5vw,52px);margin:14px 0 14px;letter-spacing:-.03em}
.lic-hero p{color:var(--ink-2);font-size:15.6px;margin-bottom:30px}
.lic-hero p b{color:var(--green)}

.lic-form{display:flex;gap:12px;max-width:660px;margin:0 auto;flex-wrap:wrap;justify-content:center}
.lic-input-wrap{position:relative;flex:1 1 340px;min-width:260px}
.lic-input-wrap input{width:100%;height:56px;padding:0 44px 0 46px;border-radius:14px;
  border:1px solid var(--line-2);background:var(--panel);color:var(--ink);font-size:15.5px;
  font-family:inherit;outline:none;transition:border-color .3s,box-shadow .3s}
.lic-input-wrap input:focus{border-color:var(--green);box-shadow:0 0 0 4px rgba(61,220,151,.12)}
.lic-ico{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:18px;height:18px;
  border:2px solid var(--ink-3);border-radius:50%}
.lic-ico::after{content:"";position:absolute;right:-6px;bottom:-3px;width:8px;height:2px;
  background:var(--ink-3);transform:rotate(45deg)}
.lic-clear{position:absolute;right:10px;top:50%;transform:translateY(-50%);width:28px;height:28px;
  border:0;border-radius:50%;background:rgba(var(--tint),.08);color:var(--ink-3);font-size:16px;
  cursor:pointer;display:none}
.lic-input-wrap.filled .lic-clear{display:block}
.lic-btn{height:56px;padding:0 30px;flex:0 0 auto}
.lic-btn.loading{opacity:.7;pointer-events:none}
.lic-quick{margin-top:16px;font-size:12.5px;color:var(--ink-3)}

.lic-result{min-height:40px}
.lic-loading,.lic-err{padding:26px;text-align:center;border-radius:14px;border:1px solid var(--line);
  background:var(--panel);color:var(--ink-3);font-size:14.5px}
.lic-err{border-color:rgba(255,90,90,.3);color:#ff9a9a}

/* ---------- 授权证书 ---------- */
.cert{max-width:780px;margin:0 auto;animation:certIn .5s var(--ease) both}
@keyframes certIn{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:none}}
.cert-frame{position:relative;padding:46px 40px 28px;border-radius:20px;text-align:center;overflow:hidden;
  background:linear-gradient(160deg,rgba(var(--tint),.075),rgba(var(--tint),.02));
  border:1px solid rgba(61,220,151,.34);
  box-shadow:0 40px 90px -40px #000,inset 0 0 0 6px rgba(61,220,151,.05)}
.cert-frame::before{content:"";position:absolute;inset:13px;border:1px solid rgba(61,220,151,.16);
  border-radius:12px;pointer-events:none}
.cert-corner{position:absolute;width:24px;height:24px;border:2px solid var(--p-accent,var(--green));opacity:.55}
.cert-corner.tl{left:22px;top:22px;border-right:0;border-bottom:0}
.cert-corner.tr{right:22px;top:22px;border-left:0;border-bottom:0}
.cert-corner.bl{left:22px;bottom:22px;border-right:0;border-top:0}
.cert-corner.br{right:22px;bottom:22px;border-left:0;border-top:0}

.cert-logo{height:46px;width:auto;max-width:160px;object-fit:contain;margin:0 auto 12px;display:block}
.cert-title{font-size:clamp(26px,4.4vw,38px);font-weight:800;letter-spacing:.28em;
  background:linear-gradient(100deg,#3ddc97,#7c5cff);-webkit-background-clip:text;background-clip:text;color:transparent}
.cert-sub{margin-top:8px;font-size:10.5px;letter-spacing:.4em;color:var(--ink-3)}
.cert-no{margin-top:20px;font-size:13px;color:var(--ink-3);letter-spacing:.05em}
.cert-no b{color:var(--ink);font-size:14.5px;letter-spacing:.08em}
.cert-text{margin:24px auto 26px;max-width:560px;font-size:15.8px;line-height:2.15;color:var(--ink-2);text-align:left}
.cert-text b{color:var(--ink);font-weight:600}
.cert-text .cert-hl{color:var(--green);font-weight:700;background:none;padding:0;border:0;border-radius:0}
.cert-text .cert-hl::before{display:none}

.cert-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;text-align:left;margin-top:6px}
.cert-grid>div{padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:rgba(var(--tint),.03)}
.cert-grid span{display:block;font-size:11.5px;letter-spacing:.1em;color:var(--ink-3);margin-bottom:4px}
.cert-grid b{font-size:14.2px;font-weight:600;color:var(--ink)}
.cert-remark{margin-top:12px;font-size:12.5px;color:var(--ink-3);text-align:left}

.cert-seal{position:absolute;right:38px;bottom:74px;pointer-events:none}
.seal-ring{width:118px;height:118px;border-radius:50%;display:flex;flex-direction:column;
  align-items:center;justify-content:center;transform:rotate(-12deg);
  border:3px solid rgba(255,96,96,.7);color:rgba(255,124,124,.92);
  box-shadow:inset 0 0 0 2px rgba(255,96,96,.22),0 0 26px -6px rgba(255,96,96,.35)}
.seal-name{font-size:13px;font-weight:800;letter-spacing:.12em}
.seal-txt{margin-top:4px;font-size:10.5px;letter-spacing:.16em}
.cert-foot{display:flex;justify-content:space-between;gap:12px;margin-top:26px;padding-top:14px;
  border-top:1px dashed var(--line);font-size:12.5px;color:var(--ink-3)}
.cert-status{margin-top:16px;padding:11px 14px;border-radius:12px;text-align:center;font-size:14.2px;font-weight:600}
.cert-status.ok{background:rgba(61,220,151,.12);border:1px solid rgba(61,220,151,.3);color:#3ddc97}
.cert-status.bad{background:rgba(255,90,90,.12);border:1px solid rgba(255,90,90,.3);color:#ff8f8f}
.cert-note{margin-top:12px;text-align:center;font-size:12px;color:var(--ink-3);line-height:1.9}
.cert-note b{color:var(--ink-2)}

/* ---------- 未授权 ---------- */
.cert-false{max-width:660px;margin:0 auto;padding:40px 34px;text-align:center;border-radius:18px;
  border:1px solid rgba(255,90,90,.34);
  background:linear-gradient(165deg,rgba(255,90,90,.09),rgba(var(--tint),.02));
  animation:certIn .45s var(--ease) both}
.false-badge{display:inline-block;padding:5px 14px;border-radius:999px;font-size:11.5px;letter-spacing:.14em;
  background:rgba(255,90,90,.16);border:1px solid rgba(255,90,90,.35);color:#ff9a9a;margin-bottom:18px}
.false-icon{width:66px;height:66px;margin:0 auto 16px;border-radius:50%;border:2px solid #ff7b7b;
  color:#ff7b7b;font-size:36px;line-height:62px;font-weight:800}
.false-title{font-size:clamp(21px,3.6vw,28px);font-weight:800;color:#ff9a9a;letter-spacing:.02em}
.false-desc{margin-top:10px;font-size:14.6px;color:var(--ink-2)}
.false-desc b{color:var(--ink)}
.false-tip{margin-top:16px;padding:11px 16px;border-radius:11px;background:rgba(255,90,90,.14);
  color:#ffb3b3;font-size:14.6px;font-weight:700;letter-spacing:.02em}
.false-advice{list-style:none;margin:18px auto 0;max-width:460px;text-align:left;padding:0}
.false-advice li{position:relative;padding:7px 0 7px 20px;font-size:13.8px;color:var(--ink-3)}
.false-advice li::before{content:"";position:absolute;left:4px;top:15px;width:6px;height:6px;
  border-radius:50%;background:rgba(255,90,90,.7)}
.false-contact{margin-top:18px;font-size:14px;color:var(--green);font-weight:600}
.false-foot{margin-top:10px;font-size:12px;color:var(--ink-3)}

@media (max-width:680px){
  .lic-hero{padding:calc(96px + env(safe-area-inset-top)) 0 30px}
  .lic-btn{width:100%;justify-content:center}
  .cert-frame{padding:34px 22px 22px}
  .cert-grid{grid-template-columns:1fr}
  .cert-text{font-size:14.6px;line-height:2}
  .cert-seal{position:static;margin:20px auto 0}
  .seal-ring{width:96px;height:96px}
  .cert-foot{flex-direction:column;align-items:center;gap:4px;text-align:center}
  .cert-false{padding:30px 20px}
}

/* ==========================================================
   授权证书 · 操作按钮（打印 / 保存为图片）
   ========================================================== */
.cert-actions{display:flex;justify-content:center;gap:14px;margin-top:18px;flex-wrap:wrap}
.cert-actions .btn{min-width:150px;height:46px;border-radius:12px;font-size:14.5px;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.cert-actions .btn-ghost{border:1px solid var(--line-2);color:var(--ink-2)}
.cert-actions .btn:disabled{opacity:.6;cursor:wait}

/* html2canvas 不支持 background-clip:text —— 截图时切换为纯色，保证标题可见 */
.cert-frame.capturing .cert-title{background:none !important;-webkit-background-clip:initial !important;background-clip:initial !important;color:#3ddc97 !important}
.cert-frame.capturing .cert-actions{display:none}
.cert-frame.capturing::before{content:none}

/* ---------- 打印：只输出证书本体 ---------- */
@media print{
  @page{margin:10mm}
  html,body{background:var(--bg) !important}
  /* 关键：print-color-adjust 不继承，必须逐元素声明，否则打印时背景色块全部丢失 */
  *{-webkit-print-color-adjust:exact !important;print-color-adjust:exact !important}
  body *{visibility:hidden}
  .cert,.cert *{visibility:visible}
  .grain,.cursor-glow,.scroll-progress,.nav,.footer,.lic-hero,.lic-quick,
  .psec.alt,.cert-actions,.theme-switch,.lang-switch{display:none !important}
  .psec{padding:0 !important}
  .cert{position:absolute;left:0;right:0;top:0;margin:0 auto;width:760px;max-width:100%;animation:none}
  /* 证书底色回到屏幕预览的一致效果（不透明底 + 同款渐变） */
  .cert-frame{animation:none;
    background:linear-gradient(160deg,rgba(var(--tint),.075),rgba(var(--tint),.02)) var(--surface) !important;
    border-color:rgba(61,220,151,.34) !important;
    box-shadow:none !important}
  .cert-frame::before{border-color:rgba(61,220,151,.16) !important}
  .cert-title{background:linear-gradient(100deg,#3ddc97,#7c5cff) !important;
    -webkit-background-clip:text !important;background-clip:text !important;color:transparent !important}
  .cert-status{margin-top:12px}
}

/* ==========================================================
   资源下载中心（下载 / 二维码 / 跳转，三种类型三种配色）
   ========================================================== */
.dl-tabs{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:8px}
.dl-tab{height:40px;padding:0 18px;border-radius:999px;border:1px solid var(--line-2);
  background:rgba(var(--tint),.03);color:var(--ink-2);font-family:inherit;font-size:14px;
  cursor:pointer;transition:all .25s var(--ease);display:inline-flex;align-items:center;gap:7px}
.dl-tab em{font-style:normal;font-size:12px;color:var(--ink-3)}
.dl-tab:hover{border-color:var(--line-2);color:var(--ink)}
.dl-tab.active{background:rgba(61,220,151,.13);border-color:rgba(61,220,151,.45);color:var(--green)}
.dl-tab.active em{color:var(--green);opacity:.8}

.dl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(430px,1fr));gap:16px}
.dl-card{position:relative;display:flex;gap:16px;align-items:flex-start;padding:20px 20px 20px 23px;
  border-radius:16px;border:1px solid var(--line);background:var(--panel);
  opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease),border-color .3s,box-shadow .3s}
.dl-card.in{opacity:1;transform:none}
.dl-card:hover{border-color:var(--line-2);box-shadow:0 20px 44px -30px #000}
.dl-card::before{content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:0 3px 3px 0;
  background:var(--dl,var(--green));opacity:.8}
.dl-type-download{--dl:var(--green)}
.dl-type-qrcode{--dl:var(--amber)}
.dl-type-link{--dl:var(--cyan)}

.dl-ico{flex:0 0 auto;width:52px;height:52px;border-radius:13px;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
  background:rgba(var(--tint),.05);border:1px solid var(--line)}
.dl-ico img{width:100%;height:100%;object-fit:cover;display:block}
.dl-letter{font-weight:800;font-size:20px;color:var(--dl)}

.dl-info{flex:1 1 auto;min-width:0}
.dl-head{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.dl-head h3{margin:0;font-size:17px;font-weight:700;letter-spacing:-.01em}
.dl-flag{font-size:11px;padding:2px 9px;border-radius:999px;border:1px solid var(--line-2);color:var(--ink-3)}
.dl-desc{margin:8px 0 10px;font-size:13.6px;line-height:1.75;color:var(--ink-2)}
.dl-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:12.4px;color:var(--ink-3)}
.dl-kind{display:inline-flex;align-items:center;gap:6px;color:var(--dl);font-weight:600}
.dl-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--dl)}

.dl-act{flex:0 0 auto;align-self:center}
.dl-btn{height:42px;padding:0 20px;border-radius:11px;font-size:14px;font-weight:700;font-family:inherit;
  white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid transparent;cursor:pointer;transition:all .25s var(--ease);text-decoration:none}
.dl-btn-download{background:linear-gradient(120deg,var(--green),#25b478);color:#04160e}
.dl-btn-download:hover{box-shadow:0 12px 26px -12px rgba(61,220,151,.75);transform:translateY(-1px)}
.dl-btn-qrcode{background:rgba(255,180,84,.14);border-color:rgba(255,180,84,.45);color:var(--amber)}
.dl-btn-qrcode:hover{background:rgba(255,180,84,.22);box-shadow:0 12px 26px -14px rgba(255,180,84,.7)}
.dl-btn-link{background:rgba(76,201,240,.12);border-color:rgba(76,201,240,.42);color:var(--cyan)}
.dl-btn-link:hover{background:rgba(76,201,240,.2);box-shadow:0 12px 26px -14px rgba(76,201,240,.7)}
.dl-empty{margin-top:12px;padding:38px 20px;text-align:center;color:var(--ink-3);font-size:14px;
  border:1px dashed var(--line);border-radius:14px}

/* ---------- 二维码弹层 ---------- */
.qr-modal{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity .25s var(--ease)}
.qr-modal[hidden]{display:none}
.qr-modal.show{opacity:1}
.qr-mask{position:absolute;inset:0;background:rgba(var(--mask),.8);backdrop-filter:blur(6px)}
.qr-panel{position:relative;width:min(92vw,382px);padding:26px 24px 22px;border-radius:20px;text-align:center;
  background:var(--surface-2);border:1px solid var(--line-2);box-shadow:0 30px 80px -30px #000;
  transform:translateY(14px) scale(.97);transition:transform .3s var(--ease)}
.qr-modal.show .qr-panel{transform:none}
.qr-close{position:absolute;right:12px;top:10px;width:30px;height:30px;border:0;border-radius:50%;
  background:rgba(var(--tint),.07);color:var(--ink-3);font-size:18px;line-height:1;cursor:pointer}
.qr-close:hover{background:rgba(var(--tint),.12);color:var(--ink)}
.qr-title{font-size:16px;font-weight:700;color:var(--ink)}
.qr-box{margin:16px auto 12px;width:224px;height:224px;padding:8px;border-radius:14px;background:#fff;
  display:flex;align-items:center;justify-content:center}
.qr-box img,.qr-box canvas{display:block;width:208px !important;height:208px !important}
.qr-tip{font-size:12.6px;color:var(--ink-3)}
.qr-url{margin-top:10px;padding:8px 10px;border-radius:9px;background:rgba(var(--tint),.04);
  font-size:11.8px;color:var(--ink-2);word-break:break-all}
.qr-acts{display:flex;gap:10px;margin-top:14px}
.qr-acts .btn{flex:1 1 0;height:42px;border-radius:11px;justify-content:center;text-decoration:none}

@media (max-width:680px){
  .dl-grid{grid-template-columns:1fr}
  .dl-card{flex-direction:column;align-items:stretch;gap:14px}
  .dl-act{align-self:stretch}
  .dl-btn{width:100%}
  .dl-tabs{gap:8px}
  .dl-tab{height:36px;padding:0 14px;font-size:13px}
}

/* button 元素默认白底会盖掉透明按钮样式，统一兜底 */
button.btn{font-family:inherit}
button.btn:not(.btn-primary):not(.btn-line):not(.btn-ghost):not(.dl-btn):not(.dl-tab){background:transparent}
.btn-ghost{background:transparent}
.cert-actions .btn-ghost{background:rgba(var(--tint),.04)}
.qr-acts .btn-ghost{background:rgba(var(--tint),.07);border:1px solid var(--line-2);color:var(--ink)}
.qr-acts .btn-ghost:hover{background:rgba(var(--tint),.12);border-color:var(--green);color:var(--green)}

/* ==========================================================
   案例视频独立页（分类标签 + 网格 + 弹层播放）
   ========================================================== */
.cs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:18px}
.cs-card{position:relative;border-radius:16px;overflow:hidden;cursor:pointer;
  border:1px solid var(--line);background:var(--surface);
  opacity:0;transform:translateY(16px);
  transition:opacity .5s var(--ease),transform .5s var(--ease),border-color .3s,box-shadow .3s}
.cs-card.in{opacity:1;transform:none}
.cs-card:hover{border-color:var(--line-2);box-shadow:0 24px 54px -34px #000}
.cs-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg)}
.cs-card.port .cs-thumb{aspect-ratio:9/16;max-height:430px}
.cs-thumb img{width:100%;height:100%;object-fit:cover;display:block;
  transition:transform .7s var(--ease);background:var(--bg)}
.cs-card:hover .cs-thumb img{transform:scale(1.05)}
.cs-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(var(--scrim),.05),rgba(var(--scrim),.72))}
.cs-play i{width:54px;height:54px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-style:normal;font-size:16px;color:#fff;padding-left:3px;
  background:rgba(var(--scrim),.42);border:1px solid rgba(var(--tint),.34);
  backdrop-filter:blur(4px);transition:all .3s var(--ease)}
.cs-card:hover .cs-play i{background:rgba(61,220,151,.9);border-color:var(--green);color:#04160e;transform:scale(1.06)}
.cs-cat{position:absolute;left:12px;top:12px;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:600;
  color:var(--ink);background:rgba(var(--scrim),.6);border:1px solid var(--line-2);backdrop-filter:blur(6px)}
.cs-body{padding:14px 16px 16px}
.cs-body h3{margin:0 0 6px;font-size:16px;font-weight:700;letter-spacing:-.01em}
.cs-body p{margin:0;font-size:13.4px;line-height:1.75;color:var(--ink-2)}

/* ---------- 播放弹层 ---------- */
.cs-modal{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;
  opacity:0;transition:opacity .25s var(--ease)}
.cs-modal[hidden]{display:none}
.cs-modal.show{opacity:1}
.cs-mask{position:absolute;inset:0;background:rgba(var(--mask),.88);backdrop-filter:blur(8px)}
.cs-stage{position:relative;width:min(94vw,1040px);border-radius:16px;overflow:hidden;
  background:#000;border:1px solid var(--line-2);box-shadow:0 40px 100px -40px #000;
  transform:translateY(12px) scale(.97);transition:transform .3s var(--ease)}
.cs-modal.show .cs-stage{transform:none}
.cs-stage.port{width:min(92vw,420px)}
.cs-video video{display:block;width:100%;max-height:74vh;background:#000}
.cs-close{position:absolute;right:10px;top:10px;z-index:3;width:32px;height:32px;border:0;border-radius:50%;
  background:rgba(var(--scrim),.6);color:#fff;font-size:19px;line-height:1;cursor:pointer;backdrop-filter:blur(6px)}
.cs-close:hover{background:rgba(255,90,90,.75)}
.cs-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:3;width:42px;height:42px;border:0;
  border-radius:50%;background:rgba(var(--scrim),.55);color:#fff;font-size:22px;cursor:pointer;backdrop-filter:blur(6px)}
.cs-arrow:hover{background:rgba(61,220,151,.85);color:#04160e}
.cs-arrow.prev{left:10px}
.cs-arrow.next{right:10px}
.cs-cap{display:flex;justify-content:space-between;gap:14px;align-items:center;
  padding:12px 16px;background:var(--surface-2);font-size:13.4px;color:var(--ink-3)}
.cs-cap b{color:var(--ink);font-weight:600}
.cs-cap span{flex:1 1 auto;text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

@media (max-width:680px){
  .cs-grid{grid-template-columns:1fr}
  .cs-arrow{width:36px;height:36px;font-size:19px}
  .cs-cap{flex-direction:column;align-items:flex-start;gap:4px}
  .cs-cap span{text-align:left;white-space:normal}
}

/* ==========================================================
   配色主题（前端可切换，后台可设默认；存入 cookie: qtagi_theme）
   —— 只覆盖调色板变量，组件样式无需改动
   ========================================================== */
/* ① 暗夜黑（默认） */
:root,[data-theme="dark"]{
  --bg:#04060a;--bg-2:#080d14;--surface:#070c13;--surface-2:#0a1018;--scrim:4,6,10;--mask:2,4,8;
  --panel:rgba(255,255,255,.035);--panel-2:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.09);--line-2:rgba(255,255,255,.16);
  --ink:#e9f2f6;--ink-2:#a9bac8;--ink-3:#6f8496;
  --green:#3ddc97;--cyan:#4cc9f0;--violet:#7c5cff;--amber:#ffb454;
  --brand-ink:#04130d;--glow:61,220,151;
}
/* ② 科技蓝 */
[data-theme="blue"]{
  --bg:#050b1a;--bg-2:#08152c;--surface:#0a1c38;--surface-2:#0d2445;--scrim:5,12,28;--mask:2,6,18;
  --panel:rgba(255,255,255,.04);--panel-2:rgba(255,255,255,.062);
  --line:rgba(140,190,255,.15);--line-2:rgba(140,205,255,.28);
  --ink:#e9f2ff;--ink-2:#a6c0dd;--ink-3:#6a86a9;
  --green:#4d9dff;--cyan:#3ce0f0;--violet:#7b8cff;--amber:#ffc05c;
  --brand-ink:#03101f;--glow:77,157,255;
}
/* ③ 翠绿 */
[data-theme="green"]{
  --bg:#03110b;--bg-2:#061d13;--surface:#08241a;--surface-2:#0b2e20;--scrim:3,17,11;--mask:2,10,6;
  --panel:rgba(255,255,255,.04);--panel-2:rgba(255,255,255,.062);
  --line:rgba(120,255,190,.14);--line-2:rgba(120,255,190,.26);
  --ink:#e7f8ef;--ink-2:#a2c9b5;--ink-3:#6b917e;
  --green:#2fd07a;--cyan:#37d6b0;--violet:#6fdca8;--amber:#ffc266;
  --brand-ink:#03170e;--glow:47,208,122;
}

/* ---------- 配色切换器 ---------- */
.theme-switch{position:fixed;right:20px;bottom:22px;z-index:9000;font-family:inherit}
.ts-btn{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px;border-radius:999px;
  border:1px solid var(--line-2);background:color-mix(in srgb,var(--surface) 82%,transparent);
  color:var(--ink);font-size:14px;font-weight:600;cursor:pointer;backdrop-filter:blur(10px);
  box-shadow:0 14px 34px -18px #000;transition:all .28s var(--ease)}
.ts-btn:hover{border-color:var(--green);color:var(--green);transform:translateY(-2px)}
.ts-btn i{width:14px;height:14px;border-radius:50%;background:linear-gradient(120deg,var(--green),var(--cyan));display:block}
.ts-panel{position:absolute;right:0;bottom:56px;min-width:184px;padding:8px;border-radius:14px;
  border:1px solid var(--line-2);background:var(--surface-2);box-shadow:0 26px 60px -26px #000;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:all .26s var(--ease)}
.theme-switch.open .ts-panel{opacity:1;visibility:visible;transform:none}
.ts-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 10px;border:0;border-radius:10px;
  background:transparent;color:var(--ink-2);font-family:inherit;font-size:13.6px;cursor:pointer;text-align:left;
  transition:all .22s var(--ease)}
.ts-item:hover{background:var(--panel-2);color:var(--ink)}
.ts-item .ts-dot{width:16px;height:16px;border-radius:50%;flex:0 0 auto;border:1px solid rgba(255,255,255,.28)}
.ts-item .ts-dot.d-dark{background:linear-gradient(120deg,#3ddc97,#4cc9f0)}
.ts-item .ts-dot.d-blue{background:linear-gradient(120deg,#4d9dff,#3ce0f0)}
.ts-item .ts-dot.d-green{background:linear-gradient(120deg,#2fd07a,#37d6b0)}
.ts-item em{margin-left:auto;font-style:normal;font-size:11.5px;color:var(--green);opacity:0}
.ts-item.active em{opacity:1}
.ts-item.active{background:var(--panel-2);color:var(--ink)}
@media (max-width:680px){
  .theme-switch{right:14px;bottom:14px}
  .ts-btn{height:40px;padding:0 14px;font-size:13px}
}

/* ---------- 主题细节微调 ---------- */
::selection{background:var(--green);color:var(--brand-ink)}
.btn-primary{background:linear-gradient(100deg,var(--green),var(--cyan));color:var(--brand-ink)}
.btn-primary{box-shadow:0 10px 34px -10px rgba(var(--glow),.65)}
.btn-primary:hover{box-shadow:0 16px 44px -10px rgba(var(--glow),.8)}

/* ==========================================================
   v2 · 背景也跟随配色（2026-09-13）
   —— v1 只换了调色板；这里把底色/面板/网格线/导航玻璃都染上主题色，
      并给 body 叠一层主题色渐变光晕。想看 v1 效果：用 backups/style-v1-*.css 覆盖回即可。
   ========================================================== */
[data-theme="dark"]{--tint:255,255,255}

/* ② 科技蓝 —— 深海军蓝底 + 蓝青双色光晕 */
[data-theme="blue"]{
  --tint:130,185,255;
  --bg:#071733;--bg-2:#0a2049;--surface:#0d2a5c;--surface-2:#123568;
  --scrim:7,23,51;--mask:3,10,26;
  --panel:rgba(130,185,255,.07);--panel-2:rgba(140,195,255,.11);
  --line:rgba(140,200,255,.2);--line-2:rgba(150,212,255,.34);
  --ink:#eef4ff;--ink-2:#b3c9e6;--ink-3:#7d9ac2;
  --green:#5aa6ff;--cyan:#43e3f5;--violet:#8b9cff;--amber:#ffc868;
  --brand-ink:#04122b;--glow:90,166,255;
}
[data-theme="blue"] body{
  background-image:
    radial-gradient(1200px 640px at 50% -12%, rgba(90,166,255,.26), transparent 62%),
    radial-gradient(900px 560px at 88% 8%, rgba(67,227,245,.14), transparent 58%),
    linear-gradient(180deg,#0b2352 0%,#071a3c 45%,#05122a 100%);
  background-attachment:fixed;
}
[data-theme="blue"] .nav.solid{background:rgba(var(--scrim),.62)}

/* ③ 翠绿 —— 墨绿底 + 绿青双色光晕 */
[data-theme="green"]{
  --tint:130,255,196;
  --bg:#06231a;--bg-2:#082e21;--surface:#0a3a2a;--surface-2:#0e4734;
  --scrim:6,35,26;--mask:2,14,10;
  --panel:rgba(130,255,196,.065);--panel-2:rgba(140,255,200,.1);
  --line:rgba(130,255,196,.19);--line-2:rgba(140,255,200,.32);
  --ink:#eafaf2;--ink-2:#aed3c1;--ink-3:#7ba48e;
  --green:#35d98a;--cyan:#3fdcb8;--violet:#78e0b0;--amber:#ffc86e;
  --brand-ink:#04231a;--glow:53,217,138;
}
[data-theme="green"] body{
  background-image:
    radial-gradient(1200px 640px at 50% -12%, rgba(53,217,138,.22), transparent 62%),
    radial-gradient(900px 560px at 86% 8%, rgba(63,220,184,.12), transparent 58%),
    linear-gradient(180deg,#0a3325 0%,#072417 45%,#051a11 100%);
  background-attachment:fixed;
}
[data-theme="green"] .nav.solid{background:rgba(var(--scrim),.62)}

/* ==========================================================
   导航防挤压：项多时不再两字一行（按宽度逐级降级）
   ========================================================== */
.nav-links>a,.nav-links>a:link,.nav-links .nd-btn{white-space:nowrap}
.nav-links>a,.nav-links>.nav-drop{flex:0 0 auto}
@media (max-width:1300px){
  .nav-links{gap:2px}
  .nav-links>a{padding:8px 10px;font-size:13.6px}
  .nav-links .nd-btn{padding:8px 10px;font-size:13.6px}
  .nav-inner{gap:16px}
}
@media (max-width:1150px){
  .nav-links>a.nav-2nd{display:none}
}
@media (max-width:1020px){
  .nav-links>a.nav-3rd{display:none}
  .nav-cta{padding:8px 14px;font-size:13.5px}
}
@media (max-width:880px){
  .nav-links>a.nav-2nd,.nav-links>a.nav-3rd{display:block}
}

/* ---------- 页脚快速入口（顶栏放不下的站内入口移到这里） ---------- */
.footer-links{display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;padding:2px 0 22px;margin:0 auto}
.footer-links .fl-t{font-size:12px;letter-spacing:.08em;color:var(--ink-3);opacity:.85}
.footer-links a{font-size:13.8px;color:var(--ink-2);transition:color .25s var(--ease)}
.footer-links a:hover{color:var(--green)}
@media (max-width:680px){
  .footer-links{gap:8px 16px;padding-bottom:18px}
  .footer-links a{font-size:13.4px}
}

/* 产品矩阵下拉面板不越出视口（否则会给导航造成横向溢出） */
.nd-menu{width:min(680px,calc(100vw - 32px));max-width:calc(100vw - 32px)}
@media (max-width:1200px){
  .nd-menu{width:min(360px,calc(100vw - 32px))}
  .nd-menu .nd-item em{display:none}
  .nd-menu .nd-all{font-size:12.6px}
}
@media (max-width:680px){
  .nd-menu{width:calc(100vw - 28px)}
}

/* ---------- 语言切换器（叠在配色按钮上方） ---------- */
.lang-switch{position:fixed;right:20px;bottom:78px;z-index:9000;font-family:inherit}
.ls-btn{display:inline-flex;align-items:center;gap:7px;height:44px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-2);background:color-mix(in srgb,var(--surface) 82%,transparent);
  color:var(--ink);font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;
  backdrop-filter:blur(10px);box-shadow:0 14px 34px -18px #000;transition:all .28s var(--ease)}
.ls-btn:hover{border-color:var(--green);color:var(--green);transform:translateY(-2px)}
.ls-btn .ls-cur{display:inline-flex;align-items:center;justify-content:center;min-width:28px;height:20px;
  padding:0 6px;border-radius:6px;background:rgba(var(--tint),.14);font-size:11.5px;font-weight:700;letter-spacing:.02em}
.ls-panel{position:absolute;right:0;bottom:56px;min-width:170px;padding:8px;border-radius:14px;
  border:1px solid var(--line-2);background:var(--surface-2);box-shadow:0 26px 60px -26px #000;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:all .26s var(--ease)}
.lang-switch.open .ls-panel{opacity:1;visibility:visible;transform:none}
.ls-item{display:flex;align-items:center;gap:10px;width:100%;padding:9px 10px;border:0;border-radius:10px;
  background:transparent;color:var(--ink-2);font-family:inherit;font-size:13.6px;cursor:pointer;text-align:left;
  transition:all .22s var(--ease)}
.ls-item:hover{background:var(--panel-2);color:var(--ink)}
.ls-item em{margin-left:auto;font-style:normal;font-size:11.5px;color:var(--green);opacity:0}
.ls-item.active{background:var(--panel-2);color:var(--ink)}
.ls-item.active em{opacity:1}
@media (max-width:680px){
  .lang-switch{right:14px;bottom:64px}
  .ls-btn{height:40px;padding:0 13px;font-size:13px}
}

/* ---------- 英文标签更长：单独收紧导航 ---------- */
html[lang="en"] .nav-links{gap:2px}
html[lang="en"] .nav-links>a{padding:8px 11px;font-size:13.6px;letter-spacing:-.01em}
html[lang="en"] .nav-links .nd-btn{padding:8px 11px;font-size:13.6px}
html[lang="en"] .nav-cta{padding:8px 15px;font-size:13.5px}
@media (max-width:1440px){
  html[lang="en"] .nav-links>a.nav-2nd{display:none}
}
@media (max-width:1290px){
  html[lang="en"] .nav-links>a.nav-3rd{display:none}
}
@media (max-width:880px){
  html[lang="en"] .nav-links>a.nav-2nd,html[lang="en"] .nav-links>a.nav-3rd{display:block}
}


/* ---------- 英文模式长字符串适配 ---------- */
html[lang="en"] .hero-title{font-size:clamp(46px, 5.4vw, 86px)}
html[lang="en"] .hero-title .grad{font-size:clamp(34px, 4.2vw, 64px)}
html[lang="en"] .hero-badge{font-size:13px;max-width:max-content}
html[lang="en"] .cta-sec h2{font-size:clamp(34px, 4vw, 56px)}
html[lang="en"] .prod-card h3{font-size:24px}
html[lang="en"] .prod-card .pc-metrics b{font-size:24px}
html[lang="en"] .prod-card .pc-metrics span{font-size:13px}
html[lang="en"] .footer-links{gap:10px 22px}
html[lang="en"] .footer-links a{font-size:13.6px}
@media (max-width:1280px){
  html[lang="en"] .hero-title{font-size:clamp(40px, 4.8vw, 64px)}
  html[lang="en"] .hero-title .grad{font-size:clamp(28px, 3.6vw, 48px)}
}
@media (max-width:900px){
  html[lang="en"] .hero-badge{font-size:11.5px}
}

html[lang="en"] .reveal{opacity:1;transform:none}