/* 功能演示 · 浅色 */
:root{
  --bg:#f7f7fb;
  --panel:#ffffff;
  --ink:#0f172a;
  --ink-2:#475467;
  --ink-3:#98a2b3;
  --line:#e9eaf0;
  --line-2:#f3f4f8;
  --brand:#4f46e5;
  --brand-2:#7c3aed;
  --brand-soft:#eef2ff;
  --green:#059669;
  --green-soft:#ecfdf5;
  --amber:#d97706;
  --amber-soft:#fffbeb;
  --red:#e11d48;
  --red-soft:#fff1f2;
  --r:16px;
  --shadow:0 18px 50px rgba(16,24,40,.08);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:14px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden
}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
svg{display:block}
.bg{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.bg__glow{position:absolute;border-radius:50%;filter:blur(10px)}
.bg__glow--a{width:760px;height:760px;left:-240px;top:-320px;background:radial-gradient(circle,rgba(99,102,241,.22),transparent 62%)}
.bg__glow--b{width:620px;height:620px;right:-220px;top:160px;background:radial-gradient(circle,rgba(168,85,247,.16),transparent 62%)}
.bg__grid{
  position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(15,23,42,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(15,23,42,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 0%,#000 10%,transparent 72%)
}

/* 顶栏 */
.nav{
  position:relative;z-index:2;max-width:1180px;margin:0 auto;padding:22px 28px;
  display:flex;align-items:center;gap:22px
}
.brand{display:flex;align-items:center;gap:11px}
.brand__mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;
  font-weight:700;font-size:17px;background:linear-gradient(140deg,#6366f1,#7c3aed);
  box-shadow:0 10px 24px rgba(99,102,241,.32)
}
.brand__text{display:flex;flex-direction:column;line-height:1.28}
.brand__text strong{font-size:14px;font-weight:650;letter-spacing:.2px}
.brand__text em{font-style:normal;font-size:9px;letter-spacing:1.5px;color:var(--ink-3)}
.nav__links{display:flex;align-items:center;gap:20px;margin-left:auto;font-size:13px;color:var(--ink-2)}
.nav__links a{position:relative;padding:4px 0;transition:.15s}
.nav__links a:hover{color:var(--brand)}
.nav__badge{
  display:inline-flex;align-items:center;gap:6px;font-size:10.5px;font-weight:700;letter-spacing:.8px;
  color:var(--brand);background:var(--brand-soft);border:1px solid #e0e7ff;border-radius:99px;padding:4px 10px
}
.nav__badge i{width:5px;height:5px;border-radius:50%;background:var(--brand);animation:blink 1.8s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}

.wrap{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:12px 28px 60px}

/* Hero */
.hero{padding:52px 0 34px;max-width:760px}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--ink-2);
  background:#fff;border:1px solid var(--line);border-radius:99px;padding:6px 13px;box-shadow:0 2px 8px rgba(16,24,40,.04)
}
.hero__eyebrow .pulse{width:6px;height:6px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.hero h1{
  margin:22px 0 16px;font-size:56px;line-height:1.12;letter-spacing:-1.6px;font-weight:700
}
.hero h1 em{
  font-style:normal;background:linear-gradient(120deg,#4f46e5,#9333ea 60%,#db2777);
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero__lead{margin:0 0 22px;font-size:15.5px;line-height:1.85;color:var(--ink-2);max-width:620px}
.hero__chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.chip{
  display:inline-flex;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:7px 11px;font-size:12.5px;color:var(--ink-2);box-shadow:0 1px 3px rgba(16,24,40,.03)
}
.chip b{font-weight:650;color:var(--ink)}
.chip i{font-style:normal;font-size:10px;color:var(--ink-3)}
.hero__meta{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.live{display:inline-flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-radius:99px;padding:5px 12px}
.live__dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px var(--green-soft)}
.live.is-off .live__dot{background:var(--amber);box-shadow:0 0 0 3px var(--amber-soft)}
.hero__links{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--ink-3)}
.hero__links a{color:var(--brand);font-weight:600}
.hero__links a:hover{text-decoration:underline}

/* 功能卡 */
.features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:56px}
.fcard{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;
  box-shadow:0 2px 8px rgba(16,24,40,.03);cursor:pointer;transition:.18s;overflow:hidden
}
.fcard::after{
  content:"";position:absolute;inset:0;border-radius:var(--r);pointer-events:none;
  background:linear-gradient(140deg,rgba(99,102,241,.07),transparent 45%);opacity:0;transition:.2s
}
.fcard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#dcd9fb}
.fcard:hover::after{opacity:1}
.fcard__icon{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;margin-bottom:14px}
.fcard__icon svg{width:20px;height:20px}
.i-indigo{background:#eef2ff;color:#4f46e5}
.i-violet{background:#f5f3ff;color:#7c3aed}
.i-emerald{background:#ecfdf5;color:#059669}
.i-amber{background:#fffbeb;color:#d97706}
.i-rose{background:#fff1f2;color:#e11d48}
.i-sky{background:#eff8ff;color:#0284c7}
.fcard h3{margin:0 0 6px;font-size:15px;font-weight:650}
.fcard p{margin:0 0 14px;font-size:12.5px;line-height:1.75;color:var(--ink-3)}
.fcard__tag{
  position:absolute;top:16px;right:16px;font-size:9.5px;font-weight:700;letter-spacing:.6px;
  color:var(--brand);background:var(--brand-soft);border-radius:99px;padding:2px 7px
}
.fcard__more{font-size:11.5px;font-weight:600;color:var(--brand)}

/* 区块 */
.section{margin-bottom:58px;scroll-margin-top:24px}
.section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}
.section__eyebrow{display:block;font-size:10px;letter-spacing:1.6px;color:var(--ink-3);font-weight:700;margin-bottom:5px}
.section__head h2{margin:0 0 5px;font-size:24px;letter-spacing:-.5px;font-weight:700}
.section__head p{margin:0;font-size:13px;color:var(--ink-3);line-height:1.7}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;height:38px;padding:0 16px;
  border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-2);
  font-size:12.5px;font-weight:600;cursor:pointer;transition:.16s;white-space:nowrap
}
.btn:hover{border-color:#c7d2fe;color:var(--brand)}
.btn--primary{background:linear-gradient(135deg,#4f46e5,#6d28d9);border-color:transparent;color:#fff;box-shadow:0 8px 20px rgba(79,70,229,.26)}
.btn--primary:hover{color:#fff;filter:brightness(1.05);transform:translateY(-1px)}
.btn--primary:disabled{opacity:.6;cursor:not-allowed;transform:none}
.btn--ghost{background:#fff}
.btn--block{width:100%;height:42px}
.btn--mini{height:28px;padding:0 9px;font-size:11px;border-radius:7px}

/* 复用关系 */
.reuse{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.reuse-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:8px}
.reuse-card__top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.reuse-card h4{margin:0;font-size:13.5px;font-weight:650}
.reuse-card__path{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:10px;color:var(--ink-3)}
.reuse-card ul{list-style:none;margin:4px 0 0;padding:0;display:grid;gap:5px}
.reuse-card li{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--ink-2)}
.reuse-card li::before{content:"";width:4px;height:4px;border-radius:50%;background:#c7d2fe;flex:0 0 4px}
.reuse-card a{margin-top:auto;font-size:11.5px;font-weight:600;color:var(--brand)}

/* 实验区 */
.lab{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:14px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:0 2px 8px rgba(16,24,40,.03)}
.panel__head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:10px}
.panel__head h2{margin:0;font-size:20px;letter-spacing:-.3px}
.panel__desc{margin:0 0 16px;font-size:12.5px;color:var(--ink-3);line-height:1.75}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;border-radius:99px;padding:4px 10px;background:var(--line-2);color:var(--ink-2);white-space:nowrap}
.pill i{width:6px;height:6px;border-radius:50%;background:currentColor}
.pill--ok{background:var(--green-soft);color:var(--green)}
.pill--warn{background:var(--amber-soft);color:var(--amber)}
.pill--bad{background:var(--red-soft);color:var(--red)}

.short-form{display:grid;gap:12px}
.field{display:flex;flex-direction:column;gap:6px}
.field span{font-size:11.5px;font-weight:600;color:var(--ink-2)}
.field input{
  height:40px;border:1px solid var(--line);border-radius:9px;padding:0 12px;font-size:13px;color:var(--ink);
  background:#fcfcfd;outline:none;transition:.15s;font-family:inherit;width:100%
}
.field input:focus{border-color:#a5b4fc;background:#fff;box-shadow:0 0 0 3px var(--brand-soft)}
.short-form__row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.result{
  margin-top:14px;padding:14px;border-radius:11px;border:1px dashed #c7d2fe;background:#f8f9ff
}
.result.is-err{border-color:#fecdd3;background:#fff7f8}
.result__label{font-size:10px;letter-spacing:1px;color:var(--ink-3);font-weight:700;margin-bottom:6px}
.result__url{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;color:var(--brand);word-break:break-all
}
.result__url a{text-decoration:underline}
.result__msg{font-size:12.5px;color:var(--red);line-height:1.7}
.result__hint{margin-top:8px;font-size:11.5px;color:var(--ink-3)}

/* 预览 */
.panel--preview{position:sticky;top:20px}
.seg{display:inline-flex;background:var(--line-2);border-radius:9px;padding:3px;gap:2px}
.seg button{
  border:0;background:transparent;font-size:11.5px;font-weight:600;color:var(--ink-3);
  padding:5px 11px;border-radius:7px;cursor:pointer;transition:.15s
}
.seg button.active{background:#fff;color:var(--brand);box-shadow:0 1px 3px rgba(16,24,40,.08)}
.phone{
  margin:8px auto 0;width:100%;max-width:300px;border:8px solid #101828;border-radius:28px;
  background:#101828;overflow:hidden;box-shadow:0 22px 50px rgba(16,24,40,.18)
}
.phone__bar{height:18px;display:grid;place-items:center}
.phone__bar span{width:64px;height:4px;border-radius:99px;background:#2b3444}
.phone iframe{display:block;width:100%;height:520px;border:0;background:#fff;border-radius:0 0 20px 20px}
.preview-foot{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}
.hint{font-size:11px;color:var(--ink-3);line-height:1.6}

/* 单页 */
.pages{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.page-card{
  display:flex;flex-direction:column;gap:7px;background:#fff;border:1px solid var(--line);
  border-radius:13px;padding:16px;transition:.16s
}
.page-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#dcd9fb}
.page-card__top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.page-card h4{margin:0;font-size:13.5px;font-weight:650}
.page-card p{margin:0;font-size:11.5px;color:var(--ink-3);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.page-card__meta{display:flex;align-items:center;justify-content:space-between;font-size:10.5px;color:var(--ink-3);margin-top:auto;padding-top:8px;border-top:1px solid var(--line-2)}
.empty{
  grid-column:1/-1;text-align:center;padding:36px 16px;border:1px dashed var(--line);border-radius:13px;
  color:var(--ink-3);font-size:12.5px;background:#fcfcfd
}
.empty b{display:block;color:var(--ink-2);font-size:13px;margin-bottom:4px}
.skeleton{height:104px;border-radius:13px;background:linear-gradient(100deg,#f1f2f7 20%,#f8f9fc 40%,#f1f2f7 60%);background-size:220% 100%;animation:shimmer 1.2s infinite}
@keyframes shimmer{0%{background-position:120% 0}100%{background-position:-20% 0}}

/* 部署 */
.deploy{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:14px}
.deploy__code{background:#0f172a;border-radius:var(--r);overflow:hidden;box-shadow:0 18px 40px rgba(15,23,42,.16)}
.deploy__code-head{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.08)}
.deploy__code-head span{font-family:ui-monospace,Menlo,monospace;font-size:11px;color:#94a3b8}
.deploy__code pre{margin:0;padding:16px;color:#c7d2fe;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;line-height:1.8;white-space:pre-wrap;word-break:break-all}
.deploy__steps{margin:0;padding:0 0 0 18px;display:grid;gap:11px;align-content:start}
.deploy__steps li{font-size:12.5px;color:var(--ink-2);line-height:1.7;padding-left:4px}
.deploy__steps b{display:block;font-size:12.5px;color:var(--ink);font-weight:650}
.deploy__steps span{display:block;font-size:11.5px;color:var(--ink-3)}

/* 页脚 */
.foot{
  position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:26px 28px 40px;
  border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:14px;
  font-size:11.5px;color:var(--ink-3)
}
.foot__meta{font-family:ui-monospace,Menlo,monospace;font-size:10.5px;letter-spacing:.3px}

.toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,14px);z-index:99;
  background:rgba(15,23,42,.92);color:#fff;font-size:12.5px;padding:9px 17px;border-radius:99px;
  opacity:0;pointer-events:none;transition:.2s;box-shadow:0 12px 30px rgba(15,23,42,.25)
}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media(max-width:1024px){
  .features{grid-template-columns:repeat(2,minmax(0,1fr))}
  .reuse{grid-template-columns:repeat(2,minmax(0,1fr))}
  .lab{grid-template-columns:1fr}
  .panel--preview{position:static}
  .pages{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:720px){
  .nav{padding:16px 18px;flex-wrap:wrap}
  .nav__links{order:3;width:100%;justify-content:space-between;font-size:12px}
  .nav__badge{display:none}
  .wrap{padding:6px 18px 40px}
  .hero{padding:30px 0 24px}
  .hero h1{font-size:38px;letter-spacing:-1px}
  .features{grid-template-columns:1fr;gap:10px}
  .reuse{grid-template-columns:1fr}
  .section__head{flex-direction:column;align-items:flex-start}
  .short-form__row{grid-template-columns:1fr}
  .pages{grid-template-columns:1fr}
  .deploy{grid-template-columns:1fr}
  .foot{flex-direction:column;align-items:flex-start;padding:20px 18px 30px}
}