:root{
  --lp-bg:#05070d;
  --lp-bg-2:#0a101e;
  --lp-panel:rgba(255,255,255,.04);
  --lp-line:rgba(255,255,255,.09);
  --lp-text:#e8edf7;
  --lp-muted:#93a0b8;
  --lp-blue:#2563eb;
  --lp-cyan:#22d3ee;
  --lp-green:#34d399;
  --lp-grad:linear-gradient(92deg,#4f8bff 0%,#22d3ee 100%);
  --r-sm:8px; --r-md:12px; --r-lg:16px; --r-xl:22px; --r-pill:999px;
  --sp1:4px; --sp2:8px; --sp3:12px; --sp4:16px; --sp5:24px; --sp6:32px; --sp7:48px; --sp8:64px;
  --container:1200px;
  --nav-h:60px;
  --font:"Alimama ShuHeiTi","PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);font-weight:400;font-size:15px;line-height:1.65;
  color:var(--lp-text);background:var(--lp-bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:inherit}
.wrap{max-width:var(--container);margin:0 auto;padding:0 20px}

/* ---------------- 顶栏 ---------------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  display:flex;align-items:center;gap:16px;padding:0 20px;
  /* ⚠️ demo.css 是独立样式表（demo.html 不加载 app.css）→ 直接用 env()。
     高度也要跟着加，否则刘海会把栏内文字压掉。 */
  height:calc(var(--nav-h) + env(safe-area-inset-top, 0px));
  padding-top:env(safe-area-inset-top, 0px);
  padding-left:calc(20px + env(safe-area-inset-left, 0px));
  padding-right:calc(20px + env(safe-area-inset-right, 0px));
  background:rgba(5,7,13,.74);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.06);
}
.brand{display:flex;align-items:center;gap:9px;min-width:0}
.brand-mark{
  width:30px;height:30px;border-radius:9px;flex:0 0 auto;
  background:var(--lp-grad);box-shadow:0 4px 14px rgba(37,99,235,.5);
  display:flex;align-items:center;justify-content:center;
}
.brand-mark svg{width:17px;height:17px;color:#04121f}
.brand-name{font-size:17px;font-weight:800;letter-spacing:.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-spacer{flex:1 1 auto}
.nav-links{display:flex;gap:22px}
.nav-links a{font-size:14px;color:var(--lp-muted);text-decoration:none;transition:color .18s}
.nav-links a:hover{color:var(--lp-text)}
.nav-act{display:flex;align-items:center;gap:10px}
.btn{
  -webkit-appearance:none;
  appearance:none;border:1px solid transparent;border-radius:var(--r-md);font-family:inherit;
  font-size:14px;font-weight:600;line-height:1.2;padding:10px 18px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  text-decoration:none;white-space:nowrap;transition:transform .18s,box-shadow .18s,background .18s,border-color .18s;
}
.btn-primary{color:#04121f;background:var(--lp-grad);box-shadow:0 8px 24px rgba(37,99,235,.45)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(34,211,238,.42)}
.btn-ghost{color:var(--lp-text);border-color:rgba(255,255,255,.22);background:transparent}
.btn-ghost:hover{border-color:rgba(255,255,255,.5);background:rgba(255,255,255,.06)}
.btn-lg{height:50px;padding:0 26px;font-size:15.5px;border-radius:var(--r-md)}
.nav .btn{padding:8px 15px;font-size:13.5px}

/* ---------------- Hero ---------------- */
.hero{position:relative;overflow:hidden;padding:calc(var(--nav-h) + 34px) 0 8px;padding-top:calc(var(--nav-h) + 34px + env(safe-area-inset-top, 0px))}
.orb{position:absolute;border-radius:50%;filter:blur(92px);pointer-events:none}
.orb-a{width:520px;height:520px;left:-170px;top:-150px;background:radial-gradient(circle,rgba(37,99,235,.55),transparent 70%)}
.orb-b{width:600px;height:600px;right:-200px;top:-40px;background:radial-gradient(circle,rgba(34,211,238,.26),transparent 70%)}
.grid-mask{
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(ellipse 90% 66% at 50% 0%,#000 28%,transparent 74%);
  mask-image:radial-gradient(ellipse 90% 66% at 50% 0%,#000 28%,transparent 74%);
}
.hero-in{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:52px;align-items:center;padding-bottom:34px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:#9fc0ff;
  padding:7px 14px;border-radius:var(--r-pill);border:1px solid rgba(79,139,255,.35);background:rgba(37,99,235,.14);
}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--lp-cyan);box-shadow:0 0 8px var(--lp-cyan)}
h1{margin:20px 0 16px;font-size:clamp(30px,4.2vw,48px);line-height:1.22;font-weight:900;letter-spacing:.8px}
.grad{background:var(--lp-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:540px;font-size:16px;line-height:1.9;color:var(--lp-muted);margin:0}
.lead b{color:var(--lp-text)}
.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}
.trust{display:flex;gap:20px;margin-top:24px;padding:0;list-style:none;flex-wrap:wrap}
.trust li{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--lp-muted)}
.trust svg{width:15px;height:15px;color:var(--lp-green);flex:0 0 auto}

/* ---------------- 演示房间预览（设备框） ---------------- */
.stage{position:relative}
.screen{
  border-radius:var(--r-lg);border:1px solid rgba(255,255,255,.13);
  background:linear-gradient(160deg,#0d1526 0%,#0a0f1c 62%);
  box-shadow:0 30px 80px rgba(0,0,0,.6),0 0 0 1px rgba(37,99,235,.12),0 0 60px rgba(37,99,235,.16);
  padding:14px;
}
.screen-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:11px;gap:10px}
.live{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;color:#fda4af}
.live i{width:8px;height:8px;border-radius:50%;background:#f43f5e;box-shadow:0 0 10px #f43f5e;animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.35}}
.screen-name{font-size:12px;color:var(--lp-muted)}
.hd{
  position:relative;aspect-ratio:16/9;border-radius:var(--r-md);overflow:hidden;
  background:radial-gradient(ellipse 62% 80% at 50% 64%,#123524 0%,#0b2418 46%,#071510 100%);
  display:flex;align-items:flex-end;padding:12px 14px;gap:10px;
}
.fig{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:33%;aspect-ratio:1/2.1;border-radius:46% 46% 0 0;background:linear-gradient(180deg,#1c4a33,#143626)}
.tag{position:relative;font-size:11px;font-weight:600;color:#a7f3d0;padding:5px 10px;border-radius:var(--r-sm);background:rgba(6,26,17,.76);border:1px solid rgba(52,211,153,.3)}
.res{position:relative;margin-left:auto;font-size:11px;color:#7da190;font-variant-numeric:tabular-nums}
.thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:11px}
.thumb{
  aspect-ratio:16/9;border-radius:var(--r-sm);border:1px solid rgba(255,255,255,.08);
  background:#0d1322;display:flex;align-items:center;justify-content:center;font-size:11px;color:#5b6b8c;text-align:center;padding:4px;
}
.thumb.on{border-color:rgba(79,139,255,.5);color:#9fc0ff;background:rgba(37,99,235,.12)}

/* 右侧迷你派单表 */
.mini-table{margin-top:11px;border:1px solid rgba(255,255,255,.1);border-radius:var(--r-md);overflow:hidden}
.mini-head{display:flex;align-items:center;gap:8px;padding:9px 12px;background:rgba(255,255,255,.04);border-bottom:1px solid rgba(255,255,255,.08)}
.mini-head b{font-size:12.5px;font-weight:700}
.mini-head span{font-size:11px;color:var(--lp-muted);margin-left:auto}
.mini-row{display:grid;grid-template-columns:52px 1fr 62px 56px;gap:8px;padding:7px 12px;font-size:11.5px;border-bottom:1px solid rgba(255,255,255,.05);color:#c0cbdf}
.mini-row:last-child{border-bottom:none}
.mini-row.h{background:rgba(255,255,255,.03);font-size:11px;font-weight:700;color:#6d9bff}
.mini-row .ok{color:#6ee7b7}
.mini-row .wait{color:#fcd34d}
.mini-row span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 标注气泡 */
.callout{
  position:absolute;display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
  padding:9px 13px;border-radius:var(--r-md);background:rgba(13,21,38,.92);
  border:1px solid rgba(255,255,255,.16);box-shadow:0 10px 30px rgba(0,0,0,.55);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);max-width:78%;
}
.callout i{width:20px;height:20px;border-radius:6px;background:rgba(37,99,235,.28);color:#9fc0ff;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;font-style:normal;font-size:11px;font-weight:800}
.callout b{color:var(--lp-cyan)}
.c1{left:-22px;top:30%}
.c2{right:-18px;top:56%}
.c3{left:-14px;bottom:-14px}

/* ---------------- 三步价值 ---------------- */
.sec{padding:64px 0 8px}
.sec-head{max-width:680px;margin:0 auto 36px;text-align:center}
.eyebrow-sm{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:3px;color:#6d9bff;text-transform:uppercase}
h2{margin:12px 0 10px;font-size:clamp(24px,3.2vw,34px);font-weight:900;line-height:1.3;letter-spacing:.6px}
.sub{font-size:15px;line-height:1.9;color:var(--lp-muted);margin:0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{
  position:relative;padding:26px 24px;border-radius:var(--r-xl);border:1px solid var(--lp-line);
  background:var(--lp-panel);overflow:hidden;
}
.card::before{content:"";position:absolute;inset:0;background:radial-gradient(420px 150px at 20% 0%,rgba(37,99,235,.14),transparent 70%);opacity:0;transition:opacity .25s}
.card:hover{transform:translateY(-4px);border-color:rgba(79,139,255,.45);box-shadow:0 18px 46px rgba(0,0,0,.45);transition:transform .25s,border-color .25s,box-shadow .25s}
.card:hover::before{opacity:1}
.step-n{position:relative;width:40px;height:40px;border-radius:var(--r-md);display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:900;color:#04121f;background:var(--lp-grad);box-shadow:0 6px 18px rgba(37,99,235,.45)}
.card h3{position:relative;margin:16px 0 9px;font-size:17px;font-weight:800}
.card p{position:relative;margin:0;font-size:13.5px;line-height:1.85;color:var(--lp-muted)}
.tag-chip{position:relative;display:inline-block;margin-top:15px;font-size:12px;font-weight:600;color:#6ee7b7;padding:4px 10px;border-radius:var(--r-pill);background:rgba(52,211,153,.1);border:1px solid rgba(52,211,153,.25)}

/* ---------------- 演示房间包含 ---------------- */
.include{margin-top:14px;border-radius:var(--r-xl);border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.02);padding:26px 26px 22px}
.include h3{margin:0 0 4px;font-size:16px;font-weight:800}
.include .hint{margin:0 0 16px;font-size:13px;color:var(--lp-muted)}
.check{display:grid;grid-template-columns:repeat(3,1fr);gap:10px 22px;margin:0;padding:0;list-style:none}
.check li{display:flex;align-items:center;gap:9px;font-size:13.5px;color:#c0cbdf}
.check svg{width:16px;height:16px;color:var(--lp-green);flex:0 0 auto}

/* ---------------- 双出口 ---------------- */
.exits{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}
.exit{
  display:flex;flex-direction:column;gap:6px;padding:26px 24px;border-radius:var(--r-xl);
  border:1px solid var(--lp-line);background:var(--lp-panel);text-decoration:none;transition:transform .2s,border-color .2s;
}
.exit:hover{transform:translateY(-3px);border-color:rgba(79,139,255,.5)}
.exit .k{font-size:12px;font-weight:700;letter-spacing:2px;color:#6d9bff}
.exit b{font-size:17px;font-weight:800}
.exit span{font-size:13px;line-height:1.8;color:var(--lp-muted)}
.exit .go{margin-top:10px;font-size:13.5px;font-weight:700;color:#22d3ee}

/* ---------------- 页脚 ---------------- */
footer{margin-top:56px;border-top:1px solid rgba(255,255,255,.06);background:#04060b;padding:40px 0 34px}
.foot{display:flex;justify-content:space-between;gap:36px;flex-wrap:wrap}
.foot-brand{max-width:420px}
.foot-brand b{font-size:16px;font-weight:900}
.foot-brand span{display:block;margin-top:10px;font-size:12.5px;line-height:1.9;color:#5f6f8f}
.foot-links{display:flex;gap:56px}
.foot-col b{display:block;font-size:13px;margin-bottom:12px}
.foot-col a{display:block;font-size:13px;color:#5f6f8f;text-decoration:none;padding:4px 0}
.foot-col a:hover{color:#9fc0ff}

/* ---------------- 响应式 ---------------- */
@media (max-width:1024px){
  .hero-in{grid-template-columns:1fr;gap:40px}
  .stage{max-width:600px;margin:0 auto;width:100%}
  .nav-links{display:none}
}
@media (max-width:680px){
  .wrap{padding:0 16px}
  .hero{padding-top:calc(var(--nav-h) + 22px + env(safe-area-inset-top, 0px))}
  h1{letter-spacing:.4px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cards,.check,.exits{grid-template-columns:1fr}
  .callout{position:static;max-width:none;width:100%;margin-top:10px;border-radius:var(--r-md)}
  .c1,.c2,.c3{margin-top:10px}
  .stage{display:flex;flex-direction:column}
  .screen{order:1}
  .callout{order:2}
  .sec{padding:48px 0 6px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}