/* ============================================================
   NOVA — 官网设计系统 v3（黑 / 亮绿 / Inter 超粗 / 胶囊 / 极简）
   设计语言参考：纯黑背景 · #4ADE80 绿点缀 · 大字号 · 大留白
   ============================================================ */

@font-face{
  font-family:"InterVar";
  src:url("../fonts/inter.woff2") format("woff2");
  font-weight:100 900; font-style:normal; font-display:swap;
}

:root{
  /* ---- 黑系背景 ---- */
  --bg:        #050505;
  --bg-2:      #0a0a0a;
  --surface-1: #0e0e0e;
  --surface-2: #141414;
  --surface-3: #1a1a1a;
  --border:    rgba(255,255,255,.1);
  --border-2:  #262626;
  --border-3:  #333333;

  /* ---- 文字 ---- */
  --fg:        #fafafa;
  --fg-2:      #9ca3af;
  --fg-3:      #6b7280;
  --fg-4:      #4b4b4b;

  /* ---- 亮绿点缀 ---- */
  --acc:       #4ade80;
  --acc-2:     #36c96c;
  --acc-dark:  #22c55e;
  --acc-ink:   #04140b;
  --acc-glow:  rgba(74,222,128,.3);
  --acc-soft:  rgba(74,222,128,.08);

  /* ---- 排版 ---- */
  --font: "InterVar", "Inter", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Code", "SF Mono", Consolas, Menlo, monospace;

  /* ---- 间距 / 形状 ---- */
  --sp-section: clamp(96px, 13vw, 180px);
  --sp-gap: clamp(14px, 1.4vw, 20px);
  --r-xl: 28px;
  --r-lg: 22px;
  --r: 16px;
  --r-sm: 12px;
  --pill: 999px;
  --wrap: 1200px;
  --ease: cubic-bezier(.22,.68,.28,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  background:var(--bg);
  color:var(--fg);
  font-family:var(--font);
  font-size:16px;
  line-height:1.6;
  letter-spacing:-.011em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{ background:rgba(74,222,128,.25); color:#fff; }
a{ color:inherit; text-decoration:none; }
img,svg{ display:block; max-width:100%; }
button{ font-family:inherit; cursor:pointer; color:inherit; }

.wrap{ width:min(var(--wrap), calc(100% - 44px)); margin-inline:auto; }

/* ============================================================
   背景：纯黑 + 极弱绿色径向辉光
   ============================================================ */
.bg-fx{ position:fixed; inset:0; z-index:-2; pointer-events:none; overflow:hidden; }
.bg-fx::before{
  content:""; position:absolute; top:-10%; left:50%; transform:translateX(-50%);
  width:900px; height:900px; border-radius:50%;
  background:radial-gradient(closest-side, rgba(74,222,128,.07), transparent 70%);
  filter:blur(40px);
}
.bg-glow-2{
  position:absolute; top:60%; left:-10%; width:720px; height:720px; border-radius:50%;
  background:radial-gradient(closest-side, rgba(74,222,128,.04), transparent 70%);
  filter:blur(60px);
}
.aurora{ display:none; }

/* 区块级绿色辉光（放在 position:relative 的 section 内） */
.glow-center{
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
  width:820px; height:820px; border-radius:50%;
  background:radial-gradient(closest-side, rgba(74,222,128,.05), transparent 72%);
  filter:blur(120px); pointer-events:none; z-index:0;
}

/* ============================================================
   通用版式
   ============================================================ */
.eyebrow{
  display:inline-flex; align-items:center; gap:9px;
  font-size:12.5px; font-weight:700; letter-spacing:.18em; text-transform:uppercase;
  color:var(--acc);
}
.lede{ color:var(--fg-2); font-weight:400; }

.sec-head{ max-width:760px; margin-bottom:clamp(52px,6vw,84px); }
.sec-head .eyebrow{ margin-bottom:22px; }
.sec-head h2{
  font-size:clamp(32px, 5.2vw, 68px); font-weight:800; letter-spacing:-.04em;
  line-height:1.02; margin-bottom:22px;
}
.sec-head p{ color:var(--fg-2); font-size:clamp(16px,1.4vw,20px); max-width:620px; line-height:1.55; }
.sec-head.center{ margin-inline:auto; text-align:center; }
.sec-head.center .eyebrow{ justify-content:center; }
.sec-head.center p{ margin-inline:auto; }

.grad{ color:var(--acc); }

section{ padding:var(--sp-section) 0; position:relative; }

/* ============================================================
   导航
   ============================================================ */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  transition:background .4s, border-color .4s, backdrop-filter .4s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(5,5,5,.72);
  backdrop-filter:blur(20px) saturate(140%);
  -webkit-backdrop-filter:blur(20px) saturate(140%);
  border-bottom-color:var(--border);
}
.nav-inner{ display:flex; align-items:center; justify-content:space-between; height:74px; }
.logo{ display:flex; align-items:center; gap:9px; font-weight:800; letter-spacing:-.02em; font-size:21px; }
.logo-mark{
  width:30px; height:30px; border-radius:9px; position:relative;
  background:rgba(74,222,128,.12); border:1px solid rgba(74,222,128,.25);
  display:grid; place-items:center;
}
.logo-mark svg{ width:16px; height:16px; }
.logo .dot{ color:var(--acc); }
.nav-links{ display:flex; align-items:center; gap:2px; }
.nav-links a{
  color:var(--fg-2); font-size:14.5px; font-weight:500; padding:8px 15px; border-radius:var(--pill);
  transition:color .2s;
}
.nav-links a:hover{ color:var(--fg); }
.nav-cta{
  margin-left:12px; padding:9px 20px !important; border-radius:var(--pill) !important;
  font-weight:700; color:var(--acc-ink) !important;
  background:var(--acc);
  box-shadow:0 0 18px rgba(74,222,128,.28);
  transition:transform .2s, box-shadow .25s, background .2s;
}
.nav-cta:hover{ color:var(--acc-ink) !important; background:#5ee88c; box-shadow:0 0 26px rgba(74,222,128,.45); transform:translateY(-1px); }
.nav-burger{ display:none; background:none; border:1px solid var(--border); border-radius:var(--pill); width:42px; height:40px; }
.nav-burger svg{ width:18px; height:18px; margin:auto; stroke:var(--fg); }

/* ============================================================
   按钮（全胶囊）
   ============================================================ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  padding:15px 30px; border-radius:var(--pill);
  font-size:16px; font-weight:700; border:1px solid transparent; white-space:nowrap;
  transition:transform .22s var(--ease), box-shadow .3s, border-color .25s, background .25s, color .2s;
}
.btn svg{ width:18px; height:18px; transition:transform .25s; }
.btn-primary{ background:var(--acc); color:var(--acc-ink); box-shadow:0 0 26px rgba(74,222,128,.25); }
.btn-primary:hover{ transform:scale(1.04); background:#5ee88c; box-shadow:0 0 42px rgba(74,222,128,.4); }
.btn-primary:hover svg{ transform:translateX(3px); }
.btn-white{ background:#fff; color:#0a0a0a; }
.btn-white:hover{ background:#e5e5e5; transform:translateY(-2px); }
.btn-ghost{ border-color:var(--border); color:var(--fg); background:transparent; }
.btn-ghost:hover{ border-color:rgba(255,255,255,.28); background:rgba(255,255,255,.04); }
.btn-lg{ padding:17px 36px; font-size:17px; }

/* ============================================================
   Hero（居中大字）
   ============================================================ */
.hero{ padding:clamp(150px,18vh,210px) 0 clamp(72px,9vw,110px); position:relative; text-align:center; overflow:hidden; }
.hero-inner{ position:relative; z-index:2; max-width:960px; margin-inline:auto; }
.badge{
  display:inline-flex; align-items:center; gap:9px;
  padding:8px 16px 8px 13px; border-radius:var(--pill); font-size:13px; color:var(--fg-2);
  border:1px solid var(--border); background:rgba(255,255,255,.02); margin-bottom:34px;
}
.badge .dot{ width:7px; height:7px; border-radius:50%; background:var(--acc); box-shadow:0 0 0 3px rgba(74,222,128,.16); animation:pulse 2.4s ease-in-out infinite; }
@keyframes pulse{ 0%,100%{opacity:1} 50%{opacity:.4} }

.hero h1{
  font-size:clamp(38px, 6.6vw, 78px); font-weight:800; letter-spacing:-.035em; line-height:1.12;
  margin-bottom:28px;
}
.hero h1 .grad{ display:block; margin-top:.08em; }
.hero-sub{ color:var(--fg-2); font-size:clamp(17px,1.7vw,23px); max-width:620px; margin:0 auto 42px; line-height:1.5; }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; justify-content:center; }
.hero-trust{
  margin:38px auto 0; display:inline-flex; align-items:center; gap:11px;
  font-size:13.5px; color:var(--fg-3);
  border:1px solid var(--border); border-radius:var(--pill); padding:9px 18px;
  background:rgba(255,255,255,.015);
}
.hero-trust b{ color:var(--fg); font-weight:600; }
.hero-trust .avatars{ display:flex; }
.hero-trust .avatars i{ width:22px; height:22px; border-radius:50%; border:2px solid var(--bg); margin-left:-8px; background:var(--surface-3); }
.hero-trust .avatars i:first-child{ margin-left:0; background:#2f3540; }
.hero-trust .avatars i:nth-child(2){ background:#3a414d; }
.hero-trust .avatars i:nth-child(3){ background:rgba(74,222,128,.5); }

/* Hero 3D 产品（居中大图） */
.hero-3d{ position:relative; width:100%; max-width:620px; aspect-ratio:1/1; margin:clamp(24px,4vw,48px) auto 0; z-index:2; }
.hero-3d::before{
  content:""; position:absolute; inset:0; border-radius:50%;
  background:radial-gradient(closest-side, rgba(74,222,128,.1), transparent 68%);
  filter:blur(40px); pointer-events:none;
}
#nova3d{ position:relative; width:100%; height:100%; display:block; cursor:grab; touch-action:pan-y; }
#nova3d.grabbing{ cursor:grabbing; }
.hero3d-fallback{ display:none; position:absolute; inset:16%; align-items:center; justify-content:center; }
.hero3d-fallback svg{ width:100%; filter:drop-shadow(0 0 28px rgba(74,222,128,.25)); }
.hero-3d.fallback .hero3d-fallback{ display:flex; }
.hero-3d.fallback #nova3d{ display:none; }
.hero3d-hint{
  position:absolute; bottom:2px; left:50%; transform:translateX(-50%);
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--mono); font-size:11px; letter-spacing:.08em; color:var(--fg-3);
  padding:7px 14px; border:1px solid var(--border); border-radius:var(--pill);
  background:rgba(10,10,10,.6); backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
  pointer-events:none; white-space:nowrap; opacity:0; transition:opacity .6s .4s;
}
.hero-3d.ready .hero3d-hint{ opacity:1; }
.hero3d-hint svg{ width:13px; height:13px; stroke:var(--acc); }
.hero-3d.fallback .hero3d-hint{ display:none; }

/* 统计条 */
.hero-stats{
  max-width:960px; margin:clamp(48px,6vw,76px) auto 0;
  display:grid; grid-template-columns:repeat(4,1fr);
  border:1px solid var(--border); border-radius:var(--r-lg);
  background:var(--surface-1); overflow:hidden;
}
.stat{ padding:28px 24px; border-left:1px solid var(--border); text-align:center; }
.stat:first-child{ border-left:none; }
.stat b{ display:block; font-size:clamp(28px,2.6vw,40px); font-weight:800; letter-spacing:-.03em; color:var(--fg); line-height:1; }
.stat b span{ color:var(--acc); }
.stat em{ font-style:normal; font-size:15px; color:var(--fg-3); font-weight:600; }
.stat i{ display:block; font-style:normal; margin-top:10px; font-size:13px; color:var(--fg-3); }

/* ============================================================
   跑马灯（低调信任条）
   ============================================================ */
.marquee{ position:relative; overflow:hidden; padding:24px 0; border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.marquee::before,.marquee::after{ content:""; position:absolute; top:0; bottom:0; width:180px; z-index:2; pointer-events:none; }
.marquee::before{ left:0; background:linear-gradient(90deg,var(--bg),transparent); }
.marquee::after{ right:0; background:linear-gradient(-90deg,var(--bg),transparent); }
.marquee-track{ display:flex; width:max-content; animation:marqueeMove 50s linear infinite; }
.marquee:hover .marquee-track{ animation-play-state:paused; }
.marquee-item{
  display:inline-flex; align-items:center; gap:13px; white-space:nowrap; margin-right:52px;
  font-size:14px; font-weight:600; letter-spacing:.02em; color:var(--fg-3); text-transform:uppercase;
}
.marquee-item::before{ content:""; width:5px; height:5px; border-radius:50%; background:var(--acc); }
@keyframes marqueeMove{ to{ transform:translateX(-50%); } }

/* ============================================================
   Bento — 核心能力
   ============================================================ */
.bento{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--sp-gap); }
.tile{
  position:relative; border:1px solid var(--border); border-radius:var(--r-lg);
  background:var(--surface-1);
  padding:32px; overflow:hidden;
  transition:transform .35s var(--ease), border-color .35s, background .35s;
  display:flex; flex-direction:column;
}
.tile::after{
  content:""; position:absolute; inset:0; pointer-events:none; opacity:0; transition:opacity .4s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%), var(--acc-soft), transparent 55%);
}
.tile:hover{ transform:translateY(-4px); border-color:rgba(74,222,128,.25); background:var(--surface-2); }
.tile:hover::after{ opacity:1; }
.tile .t-ico{
  width:52px; height:52px; border-radius:50%; display:grid; place-items:center; flex:none;
  background:#111; border:1px solid var(--border-2);
}
.tile .t-ico svg{ width:24px; height:24px; stroke:var(--acc); }
.tile h3{ font-size:20px; font-weight:700; letter-spacing:-.02em; margin:24px 0 11px; }
.tile p{ color:var(--fg-2); font-size:15px; line-height:1.65; }
.tile .t-metric{ margin-top:auto; padding-top:20px; font-family:var(--mono); font-size:13px; color:var(--acc); display:inline-flex; align-items:center; gap:8px; }
.tile .t-metric::before{ content:""; width:5px; height:5px; border-radius:50%; background:var(--acc); }
.tile.w2{ grid-column:span 2; }
.tile.w1{ grid-column:span 1; }
.tile.w2 h3{ font-size:22px; }
.tile.w2 p{ max-width:560px; }
.tile .soon{ margin-left:8px; font-size:11px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--acc); border:1px solid var(--border-acc); border-radius:var(--pill); padding:2px 9px; vertical-align:middle; }
.tile .brands{ margin-top:auto; padding-top:20px; display:flex; flex-wrap:wrap; gap:8px; }
.tile .brands span{ font-family:var(--mono); font-size:12px; color:var(--fg-3); border:1px solid var(--border-2); border-radius:var(--pill); padding:5px 12px; }
.t-visual{
  margin-top:auto; border:1px solid var(--border); border-radius:var(--r);
  background:#0a0a0a; padding:26px; position:relative; overflow:hidden;
  min-height:160px; display:flex; flex-direction:column; justify-content:flex-end;
}
.t-visual .fps-big{ font-weight:800; font-size:clamp(44px,5.5vw,72px); letter-spacing:-.04em; color:var(--fg); line-height:1; }
.t-visual .fps-big span{ color:var(--acc); }
.t-visual .fps-cap{ font-family:var(--mono); font-size:12.5px; color:var(--fg-3); margin-top:8px; letter-spacing:.04em; }
.t-visual .bars{ position:absolute; right:26px; bottom:24px; display:flex; align-items:flex-end; gap:5px; height:60px; }
.t-visual .bars i{ width:6px; border-radius:3px; background:linear-gradient(180deg,var(--acc),rgba(74,222,128,.2)); animation:barPulse 1.6s var(--ease) infinite; transform-origin:bottom; }
@keyframes barPulse{ 0%,100%{ transform:scaleY(.4); } 50%{ transform:scaleY(1); } }

/* ============================================================
   工作原理
   ============================================================ */
.flow{ display:grid; grid-template-columns:repeat(4,1fr); gap:var(--sp-gap); }
.flow-item{
  position:relative; border:1px solid var(--border); border-radius:var(--r-lg);
  background:var(--surface-1); padding:32px 28px 30px;
  transition:border-color .3s, background .3s, transform .3s var(--ease);
}
.flow-item:hover{ border-color:rgba(74,222,128,.25); background:var(--surface-2); transform:translateY(-3px); }
.flow-num{ font-size:13px; color:var(--acc); font-weight:700; letter-spacing:.14em; display:flex; align-items:center; gap:14px; margin-bottom:50px; }
.flow-num b{ font-size:46px; font-weight:800; color:var(--border-3); letter-spacing:-.04em; line-height:1; transition:color .3s; }
.flow-item:hover .flow-num b{ color:var(--fg-4); }
.flow-item h4{ font-size:18px; font-weight:700; margin-bottom:10px; letter-spacing:-.02em; }
.flow-item p{ color:var(--fg-2); font-size:14.5px; line-height:1.6; }

/* ============================================================
   规格
   ============================================================ */
.specs-grid{ display:grid; grid-template-columns:1fr 1fr; gap:0 clamp(32px,5vw,72px); border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); padding:10px clamp(22px,3vw,42px); }
.spec-row{ display:grid; grid-template-columns:140px 1fr; gap:20px; align-items:baseline; padding:20px 0; border-bottom:1px solid var(--border); }
.spec-row .sk{ font-size:13.5px; color:var(--fg-3); font-weight:600; }
.spec-row .sv{ font-size:14.5px; color:var(--fg); }
.spec-row .sv code{ font-family:var(--mono); font-size:13px; color:var(--acc); background:var(--acc-soft); padding:3px 9px; border-radius:7px; }
.spec-row .sv .sep{ color:var(--fg-4); margin:0 9px; }
.specs-grid .spec-row:nth-last-child(-n+2){ border-bottom:none; }

/* ============================================================
   机型
   ============================================================ */
.models{ display:grid; grid-template-columns:1fr 1fr; gap:var(--sp-gap); }
.model{
  position:relative; border:1px solid var(--border); border-radius:var(--r-xl);
  background:var(--surface-1); padding:40px 36px; overflow:hidden;
  transition:transform .35s var(--ease), border-color .35s;
}
.model:hover{ transform:translateY(-4px); border-color:rgba(255,255,255,.2); }
.model.pro{ border-color:rgba(74,222,128,.35); background:linear-gradient(180deg, rgba(74,222,128,.05), var(--surface-1)); }
.model.pro:hover{ border-color:rgba(74,222,128,.55); }
.model .m-tag{
  position:absolute; top:30px; right:32px; font-size:11.5px; font-weight:700; letter-spacing:.1em; text-transform:uppercase;
  padding:6px 13px; border-radius:var(--pill); border:1px solid var(--border-2); color:var(--fg-2);
}
.model.pro .m-tag{ color:var(--acc-ink); background:var(--acc); border-color:transparent; }
.model h3{ font-size:30px; font-weight:800; letter-spacing:-.03em; margin-bottom:8px; }
.model .m-sub{ color:var(--fg-3); font-size:13.5px; font-family:var(--mono); margin-bottom:32px; }
.model ul{ list-style:none; display:grid; gap:16px; margin-bottom:36px; }
.model li{ display:flex; gap:12px; font-size:14.5px; color:var(--fg-2); align-items:flex-start; }
.model li svg{ width:18px; height:18px; flex:none; margin-top:3px; stroke:var(--acc); }
.model li b{ color:var(--fg); font-weight:600; }

/* ============================================================
   软件生态 + 控制台
   ============================================================ */
.console-card{
  position:relative; border-radius:var(--r-lg); border:1px solid var(--border);
  background:var(--surface-1);
  box-shadow:0 40px 90px -40px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.04);
  overflow:hidden; will-change:transform; transition:transform .35s var(--ease), box-shadow .35s;
}
.console-card::before{ content:""; position:absolute; inset:0; background:radial-gradient(520px 220px at 82% -10%, var(--acc-soft), transparent 64%); pointer-events:none; }
.console-head{ display:flex; align-items:center; justify-content:space-between; padding:16px 18px; border-bottom:1px solid var(--border); }
.console-head .title{ display:flex; align-items:center; gap:9px; font-size:13px; color:var(--fg-2); font-family:var(--mono); }
.console-dots{ display:flex; gap:6px; }
.console-dots i{ width:9px; height:9px; border-radius:50%; }
.console-dots i:nth-child(1){ background:#e0695f; } .console-dots i:nth-child(2){ background:#e0ac55; } .console-dots i:nth-child(3){ background:var(--acc); }
.console-body{ padding:22px 20px 20px; }
.console-row{ display:grid; grid-template-columns:1fr 1fr 1fr; gap:12px; margin-bottom:14px; }
.cell{ border:1px solid var(--border); border-radius:14px; background:var(--bg-2); padding:15px; }
.cell .k{ font-size:11.5px; color:var(--fg-3); font-family:var(--mono); letter-spacing:.05em; margin-bottom:9px; }
.cell .v{ font-size:23px; font-weight:800; font-family:var(--mono); color:var(--acc); letter-spacing:-.02em; }
.cell .v small{ font-size:11.5px; color:var(--fg-2); font-weight:500; margin-left:3px; }
.cell .v.green{ color:var(--acc); } .cell .v.violet{ color:#86efac; }
.trace-box{ border:1px solid var(--border); border-radius:14px; background:var(--bg-2); padding:13px 14px 8px; }
.trace-box .k{ font-size:11.5px; color:var(--fg-3); font-family:var(--mono); letter-spacing:.05em; margin-bottom:6px; display:flex; justify-content:space-between; }
.trace-box canvas{ width:100%; height:74px; }
.channel-row{ display:flex; align-items:center; justify-content:space-between; margin-top:14px; padding:14px; border:1px solid var(--border); border-radius:14px; background:var(--bg-2); font-family:var(--mono); font-size:12.5px; color:var(--fg-2); }
.channel-row .ok{ color:var(--acc); }
.console-glare{ position:absolute; inset:0; border-radius:inherit; pointer-events:none; z-index:2; opacity:0; transition:opacity .35s; background:radial-gradient(560px circle at var(--gx,72%) var(--gy,8%), rgba(74,222,128,.08), transparent 54%); }
.console-card:hover .console-glare{ opacity:1; }
.software-console{ max-width:880px; margin:0 auto clamp(44px,5vw,68px); }

/* ============================================================
   产品实拍展示（Product reveal）
   ============================================================ */
/* —— 默认（静态堆叠，无 JS / 窄屏 / 减少动态时的稳妥形态）—— */
.product-reveal{ position:relative; text-align:center; overflow:hidden; }
.product-stage{ position:relative; width:min(94%,820px); margin:0 auto; z-index:2; }
.product-stage::before{ content:""; position:absolute; left:50%; top:52%; transform:translate(-50%,-50%); width:116%; height:104%; background:radial-gradient(closest-side, rgba(74,222,128,.2), transparent 70%); filter:blur(80px); z-index:-1; pointer-events:none; opacity:var(--glow,.42); animation:glowBreath 5.5s ease-in-out infinite; }
.product-stage{ transition:transform .3s ease-out; transform-style:preserve-3d; }
.device-float{ position:relative; animation:devFloat 5.5s ease-in-out infinite; will-change:transform; }
.device-shot{ width:100%; height:auto; display:block; filter:drop-shadow(0 36px 66px rgba(0,0,0,.6)); transform:scale(var(--dev-scale,1)); transform-origin:center 54%; will-change:transform; }
.device-glint{ position:absolute; inset:4%; overflow:hidden; pointer-events:none; mix-blend-mode:screen; border-radius:14px; }
.device-glint::before{ content:""; position:absolute; top:-40%; bottom:-40%; left:-70%; width:46%; background:linear-gradient(100deg, transparent, rgba(175,255,210,.18), transparent); transform:skewX(-16deg); animation:devGlint 6s ease-in-out infinite; }
@keyframes devFloat{ 0%,100%{ transform:translateY(0) scale(1); } 50%{ transform:translateY(-22px) scale(1.012); } }
@keyframes glowBreath{ 0%,100%{ transform:translate(-50%,-50%) scale(.95); } 50%{ transform:translate(-50%,-50%) scale(1.2); } }
@keyframes devGlint{ 0%{ left:-70%; } 45%{ left:150%; } 100%{ left:150%; } }
.pr-eyebrow{ display:block; text-align:center; margin:0 auto 30px; }
.reveal-copies{ display:grid; grid-template-columns:1fr; gap:14px; width:min(760px,92%); margin:clamp(44px,5vw,72px) auto 0; }
.reveal-copy{ border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); padding:32px; text-align:left; transition:border-color .3s, transform .3s var(--ease); }
.reveal-copy:hover{ border-color:rgba(74,222,128,.25); transform:translateY(-3px); }
.reveal-copy .ic{ width:48px; height:48px; border-radius:50%; background:#111; border:1px solid var(--border-2); display:grid; place-items:center; margin-bottom:20px; }
.reveal-copy .ic svg{ width:22px; height:22px; stroke:var(--acc); }
.reveal-copy h3{ font-size:21px; font-weight:700; letter-spacing:-.02em; margin-bottom:11px; }
.reveal-copy p{ color:var(--fg-2); font-size:15px; line-height:1.65; }

/* —— 滚动揭示增强（JS 在宽屏启用 .scrub）：固定 + 缩放 + 双文案依次淡入 —— */
.product-reveal.scrub{ padding:0; }
/* 短定格（60vh 行程）：设备随滚动放大；文案在定格段之后的正常文档流里，滚动自然经过 */
.product-reveal.scrub .product-track{ height:160vh; position:relative; }
.product-reveal.scrub .product-sticky{ position:sticky; top:0; height:100vh; overflow:hidden; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:clamp(12px,2vh,26px); }
.product-reveal.scrub .pr-eyebrow{ margin:0; }
.product-reveal.scrub .product-stage{ width:min(56%,92vh); flex:none; }
.product-reveal.scrub .reveal-copies{ margin-top:clamp(36px,5vh,64px); }

/* ============================================================
   工作原理：3 步 + 接线示意
   ============================================================ */
.flow.three{ grid-template-columns:repeat(3,1fr); }
.wire-diagram{ margin-top:var(--sp-gap); border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); padding:clamp(26px,4vw,48px); display:flex; align-items:center; justify-content:center; gap:clamp(8px,1.6vw,22px); flex-wrap:wrap; }
.wire-node{ display:flex; flex-direction:column; align-items:center; gap:11px; color:var(--fg-2); font-size:13px; font-weight:600; letter-spacing:.02em; }
.wire-node .box{ width:clamp(58px,7vw,80px); height:clamp(58px,7vw,80px); border-radius:18px; background:#111; border:1px solid var(--border-2); display:grid; place-items:center; }
.wire-node.main .box{ background:rgba(74,222,128,.12); border-color:var(--border-acc); animation:novaPulse 2.6s ease-in-out infinite; }
.wire-node .box svg{ width:28px; height:28px; stroke:var(--acc); }
@keyframes novaPulse{ 0%,100%{ box-shadow:0 0 0 0 rgba(74,222,128,.32); } 55%{ box-shadow:0 0 0 11px rgba(74,222,128,0); } }
.wire-arrow{ position:relative; width:clamp(46px,6vw,98px); height:30px; display:flex; align-items:center; justify-content:center; color:var(--fg-4); overflow:hidden; }
.wire-arrow svg{ width:24px; height:24px; stroke:currentColor; opacity:.35; }
.wire-arrow::after{ content:""; position:absolute; top:50%; margin-top:-4.5px; left:-14%; width:9px; height:9px; border-radius:50%; background:var(--acc); box-shadow:0 0 12px 2px rgba(74,222,128,.85); animation:wireFlow 1.9s cubic-bezier(.45,0,.55,1) infinite; }
.wire-diagram > .wire-arrow:nth-child(4)::after{ animation-delay:.95s; }
@keyframes wireFlow{ 0%{ left:-14%; opacity:0; } 14%{ opacity:1; } 86%{ opacity:1; } 100%{ left:114%; opacity:0; } }

/* ============================================================
   性能：快到有意义
   ============================================================ */
.perf-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(24px,4vw,56px); align-items:stretch; }
.perf-hero{ border:1px solid var(--border); border-radius:var(--r-xl); background:var(--surface-1); padding:clamp(34px,4vw,54px); position:relative; overflow:hidden; display:flex; flex-direction:column; justify-content:center; }
.perf-hero::before{ content:""; position:absolute; right:-18%; top:-26%; width:70%; height:120%; background:radial-gradient(closest-side, rgba(74,222,128,.13), transparent 70%); filter:blur(50px); pointer-events:none; }
.perf-hero .num{ position:relative; font-weight:800; font-size:clamp(76px,12vw,156px); letter-spacing:-.05em; line-height:.86; color:var(--fg); }
.perf-hero .num span{ color:var(--acc); }
.perf-hero .cap{ position:relative; margin-top:18px; color:var(--fg-2); font-size:16px; }
.perf-side{ display:grid; gap:var(--sp-gap); align-content:center; }
.perf-card{ border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); padding:22px 26px; display:flex; align-items:center; justify-content:space-between; gap:16px; }
.perf-card .l{ color:var(--fg-2); font-size:14.5px; }
.perf-card .r{ font-family:var(--mono); font-weight:700; color:var(--acc); font-size:17px; }
.res-row{ display:flex; gap:10px; flex-wrap:wrap; justify-content:center; margin-top:var(--sp-gap); }
.res-chip{ border:1px solid var(--border-2); border-radius:var(--pill); padding:11px 20px; font-family:var(--mono); font-size:13.5px; color:var(--fg-2); }
.res-chip b{ color:var(--fg); }

/* ============================================================
   NOVA 控制台展示
   ============================================================ */
.os-grid{ display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,6vw,96px); align-items:start; margin-top:clamp(16px,2vw,32px); }
.os-frame-m{ display:none; }   /* 移动端专用：每段文字下方内嵌的仪表盘帧 */
.os-steps{ display:flex; flex-direction:column; }
.os-step{ min-height:60vh; display:flex; flex-direction:column; justify-content:center; opacity:.35; transition:opacity .45s var(--ease); border-left:2px solid var(--border-2); padding-left:30px; }
.os-step.active{ opacity:1; border-left-color:var(--acc); }
.os-step .os-idx{ font-family:var(--mono); font-size:13px; color:var(--acc); font-weight:700; letter-spacing:.14em; margin-bottom:16px; }
.os-step h3{ font-size:clamp(23px,2.5vw,32px); font-weight:800; letter-spacing:-.025em; margin-bottom:13px; }
.os-step p{ color:var(--fg-2); font-size:16px; line-height:1.6; max-width:430px; }

.os-visual{ position:sticky; top:0; height:100vh; display:flex; align-items:center; }
.os-panel{ width:100%; border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); box-shadow:0 40px 90px -40px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.04); overflow:hidden; }
.os-panel-head{ display:flex; align-items:center; justify-content:space-between; padding:16px 18px; border-bottom:1px solid var(--border); }
.os-panel-head .title{ display:flex; align-items:center; gap:9px; font-size:13px; color:var(--fg-2); font-family:var(--mono); }
.os-frames{ position:relative; min-height:344px; }
.os-frame{ position:absolute; inset:0; padding:22px; opacity:0; transform:translateY(16px); transition:opacity .5s var(--ease), transform .5s var(--ease); pointer-events:none; display:flex; flex-direction:column; gap:12px; }
.os-frame.on{ opacity:1; transform:none; }
.os-row{ display:flex; justify-content:space-between; align-items:center; padding:14px 16px; border:1px solid var(--border); border-radius:12px; background:var(--bg-2); font-size:14px; color:var(--fg-2); }
.os-row b{ font-family:var(--mono); color:var(--acc); font-weight:700; }
.os-row b.ok{ color:var(--green); }
.feed{ position:relative; height:168px; border-radius:12px; border:1px solid var(--border); background:linear-gradient(180deg,#0c120f,#0a0f0c); overflow:hidden; }
.feed-tag{ position:absolute; top:12px; left:13px; font-family:var(--mono); font-size:12px; color:var(--acc); z-index:2; }
.feed-lock{ position:absolute; top:12px; right:13px; font-family:var(--mono); font-size:11px; color:var(--acc); z-index:2; opacity:.9; }
.feed-box{ position:absolute; left:38%; top:34%; width:76px; height:64px; animation:feedMove 3.6s ease-in-out infinite; }
.feed-box .b{ position:absolute; width:13px; height:13px; border:2px solid var(--acc); }
.feed-box .b.tl{ top:0; left:0; border-right:none; border-bottom:none; }
.feed-box .b.tr{ top:0; right:0; border-left:none; border-bottom:none; }
.feed-box .b.bl{ bottom:0; left:0; border-right:none; border-top:none; }
.feed-box .b.br{ bottom:0; right:0; border-left:none; border-top:none; }
.feed-box .tgt{ position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); width:28px; height:42px; }
.feed-box .tgt::before{ content:""; position:absolute; left:50%; top:0; transform:translateX(-50%); width:15px; height:15px; border-radius:50%; background:rgba(150,185,170,.5); }
.feed-box .tgt::after{ content:""; position:absolute; left:50%; top:14px; transform:translateX(-50%); width:24px; height:28px; border-radius:12px 12px 7px 7px; background:rgba(150,185,170,.42); }
.feed-box .cross{ position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); width:34px; height:34px; }
.feed-box .cross::before{ content:""; position:absolute; left:50%; top:0; transform:translateX(-50%); width:1.5px; height:100%; background:rgba(74,222,128,.85); }
.feed-box .cross::after{ content:""; position:absolute; top:50%; left:0; transform:translateY(-50%); height:1.5px; width:100%; background:rgba(74,222,128,.85); }
.feed-box .dot{ position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); width:6px; height:6px; border-radius:50%; background:var(--acc); animation:tgtPulse 1.4s ease-in-out infinite; }
@keyframes tgtPulse{ 0%,100%{ box-shadow:0 0 0 0 rgba(74,222,128,.55); } 55%{ box-shadow:0 0 0 8px rgba(74,222,128,0); } }
.feed-scan{ position:absolute; left:0; right:0; top:0; height:2px; background:linear-gradient(90deg,transparent,rgba(74,222,128,.8),transparent); animation:feedScan 2.8s linear infinite; }
@keyframes feedScan{ 0%{top:0} 100%{top:100%} }
@keyframes feedMove{ 0%,100%{transform:translate(0,0)} 50%{transform:translate(34px,14px)} }
.ctl-row{ display:flex; justify-content:space-between; align-items:center; font-size:14.5px; color:var(--fg-2); padding:4px 2px; }
.ctl-val{ font-family:var(--mono); color:var(--fg); font-weight:700; }
.slider{ position:relative; height:8px; border-radius:6px; background:var(--surface-3); margin:2px 0 8px; }
.slider i{ position:absolute; left:0; top:0; bottom:0; width:62%; border-radius:6px; background:var(--acc); }
.slider em{ position:absolute; top:50%; left:62%; width:18px; height:18px; border-radius:50%; background:#fff; transform:translate(-50%,-50%); box-shadow:0 0 12px rgba(74,222,128,.55); }
.toggles{ display:flex; gap:10px; margin-top:4px; }
.tg{ font-size:12.5px; font-family:var(--mono); color:var(--fg-3); border:1px solid var(--border-2); border-radius:var(--pill); padding:8px 15px; }
.tg.on{ color:var(--acc-ink); background:var(--acc); border-color:transparent; font-weight:700; }
.ready{ display:flex; flex-direction:column; align-items:center; gap:12px; padding:10px 0 16px; }
.ready-check{ width:66px; height:66px; border-radius:50%; background:rgba(74,222,128,.14); border:1px solid var(--border-acc); display:grid; place-items:center; }
.ready-check svg{ width:30px; height:30px; stroke:var(--acc); }
.ready-t{ font-size:20px; font-weight:800; color:var(--acc); letter-spacing:-.01em; }

.eco{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--sp-gap); }
.eco-card{ border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); overflow:hidden; transition:transform .35s var(--ease), border-color .35s; }
.eco-card:hover{ transform:translateY(-4px); border-color:rgba(74,222,128,.25); }
.eco-visual{ height:160px; position:relative; overflow:hidden; border-bottom:1px solid var(--border); background:radial-gradient(120% 90% at 50% 0%, var(--acc-soft), transparent 68%), var(--bg-2); display:grid; place-items:center; }
.eco-visual svg{ width:76%; opacity:.92; }
.eco-body{ padding:28px; }
.eco-body h3{ font-size:18px; font-weight:700; letter-spacing:-.02em; margin-bottom:10px; }
.eco-body p{ color:var(--fg-2); font-size:14.5px; }

/* ============================================================
   授权与交付
   ============================================================ */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--sp-gap); }
.step{ border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); padding:36px 32px; transition:border-color .3s, background .3s, transform .3s var(--ease); }
.step:hover{ border-color:rgba(74,222,128,.25); background:var(--surface-2); transform:translateY(-3px); }
.step .num{
  display:inline-grid; place-items:center; width:54px; height:54px; border-radius:50%;
  background:#111; border:1px solid var(--border-2); color:var(--acc);
  font-weight:800; font-size:18px; margin-bottom:26px; letter-spacing:-.02em;
}
.step h3{ font-size:19px; font-weight:700; letter-spacing:-.02em; margin-bottom:12px; }
.step p{ color:var(--fg-2); font-size:14.5px; line-height:1.65; }

/* ============================================================
   FAQ
   ============================================================ */
.faq{ max-width:840px; margin-inline:auto; display:grid; gap:12px; }
.faq-item{ border:1px solid var(--border); border-radius:var(--r); background:var(--surface-1); overflow:hidden; transition:border-color .25s, background .25s; }
.faq-item.open{ border-color:rgba(74,222,128,.3); background:var(--surface-2); }
.faq-q{ width:100%; display:flex; align-items:center; justify-content:space-between; gap:18px; padding:22px 26px; background:none; border:none; color:var(--fg); font-size:16.5px; font-weight:600; letter-spacing:-.01em; text-align:left; }
.faq-q .arr{ flex:none; width:22px; height:22px; position:relative; }
.faq-q .arr::before,.faq-q .arr::after{ content:""; position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); background:var(--acc); border-radius:2px; }
.faq-q .arr::before{ width:13px; height:2px; } .faq-q .arr::after{ width:2px; height:13px; transition:opacity .3s; }
.faq-item.open .arr::after{ opacity:0; }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .35s ease, padding .35s ease; color:var(--fg-2); font-size:15px; padding:0 26px; }
.faq-item.open .faq-a{ max-height:360px; padding:0 26px 24px; }

/* ============================================================
   定价 CTA（参考 "Ready to dominate?"）
   ============================================================ */
.pricing{ position:relative; text-align:center; overflow:hidden; }
.pricing-inner{ position:relative; z-index:2; max-width:860px; margin-inline:auto; }
.pricing h2{ font-size:clamp(36px,6.5vw,80px); font-weight:800; letter-spacing:-.045em; line-height:1; margin-bottom:28px; }
.pricing .price-line{ color:var(--fg-2); font-size:clamp(17px,1.8vw,24px); line-height:1.5; max-width:680px; margin:0 auto 44px; }
.pricing .price-line b{ color:var(--fg); font-weight:700; }
.pricing .price-line .amt{ color:var(--acc); font-weight:800; }
.pricing .cta-row{ display:flex; justify-content:center; }
.pricing .trial-note{ margin-top:30px; color:var(--acc); font-size:13px; font-weight:700; letter-spacing:.16em; text-transform:uppercase; }
.price-trust{ margin-top:clamp(56px,7vw,88px); padding-top:clamp(40px,5vw,60px); border-top:1px solid var(--border-2); display:flex; justify-content:center; gap:clamp(28px,6vw,80px); flex-wrap:wrap; }
.price-trust .pt{ display:flex; flex-direction:column; align-items:center; gap:16px; color:var(--fg-2); max-width:180px; }
.price-trust .pt .ic{ width:64px; height:64px; border-radius:50%; background:#111; border:1px solid var(--border-2); display:grid; place-items:center; }
.price-trust .pt .ic svg{ width:28px; height:28px; stroke:var(--acc); }
.price-trust .pt b{ color:var(--fg); font-size:15px; font-weight:700; }
.price-trust .pt span{ font-size:13px; color:var(--fg-3); line-height:1.5; }

/* ============================================================
   联系
   ============================================================ */
.contact-band{
  position:relative; border:1px solid var(--border); border-radius:var(--r-xl); overflow:hidden;
  background:var(--surface-1); padding:clamp(52px,7vw,84px) clamp(28px,5vw,56px); text-align:center;
}
.contact-band::before{ content:""; position:absolute; top:-40%; left:50%; transform:translateX(-50%); width:620px; height:620px; border-radius:50%; background:radial-gradient(closest-side, rgba(74,222,128,.08), transparent 70%); filter:blur(60px); pointer-events:none; }
.contact-band h2{ position:relative; font-size:clamp(28px,3.8vw,46px); font-weight:800; letter-spacing:-.035em; line-height:1.05; margin-bottom:18px; }
.contact-band p{ position:relative; color:var(--fg-2); max-width:560px; margin:0 auto 38px; font-size:17px; }
.contact-actions{ position:relative; display:flex; gap:14px; justify-content:center; flex-wrap:wrap; }
.contact-meta{ position:relative; margin-top:40px; display:flex; gap:38px; justify-content:center; flex-wrap:wrap; font-family:var(--mono); font-size:13px; color:var(--fg-3); }
.contact-meta b{ color:var(--fg-2); font-weight:600; }

/* ============================================================
   Footer
   ============================================================ */
footer{ border-top:1px solid var(--border); padding:clamp(52px,6vw,72px) 0 46px; margin-top:0; }
.foot-grid{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1fr; gap:40px; margin-bottom:54px; }
.foot-brand p{ color:var(--fg-3); font-size:13.5px; margin-top:18px; max-width:300px; line-height:1.7; }
.foot-col h5{ font-size:12px; letter-spacing:.1em; color:var(--fg-4); font-weight:700; margin-bottom:18px; text-transform:uppercase; }
.foot-col a{ display:block; color:var(--fg-2); font-size:14px; margin-bottom:12px; transition:color .2s; }
.foot-col a:hover{ color:var(--acc); }
.foot-bottom{ border-top:1px solid var(--border); padding-top:30px; display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; color:var(--fg-4); font-size:13px; }

/* ============================================================
   渐显 / 进度 / 入场
   ============================================================ */
.scroll-progress{ position:fixed; top:0; left:0; height:2px; width:0; z-index:300; background:var(--acc); opacity:.85; box-shadow:0 0 12px rgba(74,222,128,.5); }
.js .reveal{ opacity:0; transform:translateY(26px); transition:opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.js .reveal.in{ opacity:1; transform:none; }
.reveal.d1{ transition-delay:.06s; } .reveal.d2{ transition-delay:.12s; } .reveal.d3{ transition-delay:.18s; } .reveal.d4{ transition-delay:.24s; } .reveal.d5{ transition-delay:.3s; }
.split-anim{ perspective:700px; }
.split-anim .ch{ display:inline-block; opacity:0; transform:translateY(.5em); animation:chIn .72s var(--ease-out) forwards; }
.split-anim .grad{ display:inline-block; opacity:0; transform:translateY(.45em); animation:chIn .9s .26s var(--ease-out) forwards; }
@keyframes chIn{ to{ opacity:1; transform:none; } }

::-webkit-scrollbar{ width:10px; height:10px; }
::-webkit-scrollbar-track{ background:var(--bg); }
::-webkit-scrollbar-thumb{ background:#222; border-radius:8px; border:2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover{ background:#333; }

/* ============================================================
   子页面（guide / 404）
   ============================================================ */
.page-hero{ padding:clamp(140px,16vh,180px) 0 48px; }
.page-hero .eyebrow{ margin-bottom:22px; }
.page-hero h1{ font-size:clamp(36px,5vw,64px); font-weight:800; letter-spacing:-.045em; line-height:1.0; margin-bottom:18px; }
.page-hero p{ color:var(--fg-2); max-width:640px; font-size:18px; }
.doc{ max-width:880px; margin-inline:auto; padding-bottom:100px; }
.doc-step{ border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); padding:34px; margin-bottom:16px; }
.doc-step .num{ display:inline-grid; place-items:center; width:40px; height:40px; border-radius:50%; font-weight:800; font-size:15px; background:#111; color:var(--acc); border:1px solid var(--border-2); margin-bottom:20px; }
.doc-step h3{ font-size:20px; font-weight:700; letter-spacing:-.02em; margin-bottom:12px; }
.doc-step p{ color:var(--fg-2); font-size:15px; }
.doc-step ul{ margin:12px 0 0 18px; color:var(--fg-2); font-size:15px; }
.doc-step li{ margin-bottom:8px; }
.note{ margin-top:18px; padding:15px 18px; border-radius:12px; border:1px solid rgba(245,196,94,.22); background:rgba(245,196,94,.05); color:#e8c268; font-size:13.5px; }
.kbd{ font-family:var(--mono); font-size:12.5px; color:var(--acc); background:var(--acc-soft); border:1px solid var(--border-2); padding:3px 9px; border-radius:7px; }
.e404{ min-height:72vh; display:grid; place-items:center; text-align:center; padding-top:120px; }
.e404 .code{ font-size:clamp(90px,14vw,150px); font-weight:800; line-height:1; color:var(--acc); margin-bottom:24px; letter-spacing:-.05em; }
.e404 p{ color:var(--fg-2); margin-bottom:34px; font-size:18px; }

/* ============================================================
   微信二维码弹窗
   ============================================================ */
.qr-modal{ position:fixed; inset:0; z-index:400; display:grid; place-items:center; padding:20px; visibility:hidden; pointer-events:none; }
.qr-modal.open{ visibility:visible; pointer-events:auto; }
.qr-backdrop{ position:absolute; inset:0; background:rgba(0,0,0,.72); backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px); opacity:0; transition:opacity .3s; }
.qr-modal.open .qr-backdrop{ opacity:1; }
.qr-dialog{
  position:relative; width:min(400px,100%); border:1px solid var(--border-2); border-radius:var(--r-xl);
  background:var(--surface-1); overflow:hidden; z-index:1;
  opacity:0; transform:translateY(22px) scale(.96); transition:opacity .35s var(--ease), transform .35s var(--ease);
}
.qr-modal.open .qr-dialog{ opacity:1; transform:none; }
.qr-close{
  position:absolute; top:14px; right:14px; z-index:2; width:36px; height:36px; border-radius:50%;
  background:rgba(255,255,255,.06); border:1px solid var(--border-2); display:grid; place-items:center; color:var(--fg-2);
}
.qr-close:hover{ color:var(--fg); border-color:var(--border-3); }
.qr-close svg{ width:16px; height:16px; }
.qr-img{ background:#fff; padding:26px 26px 14px; display:grid; place-items:center; }
.qr-img img{ width:min(270px,100%); height:auto; border-radius:8px; }
.qr-body{ padding:18px 26px 30px; text-align:center; }
.qr-body h3{ font-size:20px; font-weight:800; letter-spacing:-.02em; margin-bottom:9px; }
.qr-body p{ color:var(--fg-2); font-size:14.5px; margin-bottom:18px; }
.qr-meta{ display:flex; gap:26px; justify-content:center; flex-wrap:wrap; font-family:var(--mono); font-size:13px; color:var(--fg-2); }
.qr-meta b{ color:var(--acc); font-weight:700; margin-right:6px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .bento{ grid-template-columns:repeat(2,1fr); }
  .tile.w2{ grid-column:span 2; }
  .tile.w1{ grid-column:span 1; }
  .flow{ grid-template-columns:repeat(2,1fr); }
  .flow.three{ grid-template-columns:1fr; }
  .eco{ grid-template-columns:1fr; }
  .steps{ grid-template-columns:1fr; }
  .specs-grid{ grid-template-columns:1fr; gap:0; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  .perf-grid{ grid-template-columns:1fr; }
  .reveal-copies{ grid-template-columns:1fr; }
  .os-grid{ grid-template-columns:1fr; gap:0; }
  /* 移动端：隐藏吸顶仪表盘，改为每段文字下方各自带一个对应帧（文字→动画→文字→动画） */
  .os-visual{ display:none; }
  .os-steps{ gap:30px; }
  .os-step{ min-height:auto; opacity:1; border-left:1px solid var(--border); padding:22px 0 22px 22px; justify-content:flex-start; }
  .os-frame-m{ display:block; margin-top:20px; border:1px solid var(--border); border-radius:var(--r-lg); background:var(--surface-1); box-shadow:0 40px 90px -40px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.04); overflow:hidden; }
  .os-frame-m .os-frame{ position:static; opacity:1; transform:none; padding:22px; }
}
@media (max-width:720px){
  .nav-links{ display:none; position:absolute; top:74px; left:0; right:0; flex-direction:column; align-items:stretch; gap:2px; background:rgba(5,5,5,.98); border-bottom:1px solid var(--border); padding:14px 20px 20px; backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px); }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding:13px 12px; font-size:15px; }
  .nav-cta{ margin:10px 0 0; text-align:center; }
  .nav-burger{ display:block; }
  .hero{ padding-top:clamp(120px,20vh,150px); }
  .hero h1{ font-size:clamp(30px,8.6vw,44px); }
  .hero-actions .btn{ width:100%; }
  .hero-stats{ grid-template-columns:1fr 1fr; }
  .stat{ padding:20px 16px; border-left:1px solid var(--border); }
  .stat:nth-child(odd){ border-left:none; }
  .stat:nth-child(n+3){ border-top:1px solid var(--border); }
  .bento{ grid-template-columns:1fr; }
  .tile.w2,.tile.w1{ grid-column:span 1; }
  .flow{ grid-template-columns:1fr; }
  .flow.three{ grid-template-columns:1fr; }
  .wire-arrow{ transform:rotate(90deg); }
  .models{ grid-template-columns:1fr; }
  .specs-grid{ padding:6px 18px; }
  .spec-row{ grid-template-columns:1fr; gap:6px; padding:15px 0; }
  .spec-row .sk{ padding-bottom:0; }
  .specs-grid .spec-row:nth-last-child(-n+2){ border-bottom:1px solid var(--border); }
  .specs-grid .spec-row:last-child{ border-bottom:none; }
  .foot-grid{ grid-template-columns:1fr; gap:30px; }
  .console-row{ grid-template-columns:1fr 1fr; }
  .contact-meta{ gap:22px; }
  .pricing h2{ font-size:clamp(30px,9vw,46px); }
  .price-trust{ gap:24px 34px; }
  .price-trust .pt{ max-width:150px; }
  .reveal-copy{ padding:26px 22px; }
  .os-frame{ padding:16px; }
  .qr-dialog{ width:min(340px,100%); }
}

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; }
  .js .reveal{ opacity:1 !important; transform:none !important; }
  .split-anim .ch,.split-anim .grad{ opacity:1 !important; transform:none !important; }
  html{ scroll-behavior:auto; }
}