:root {
  color-scheme: dark;
  --bg: #070b12;
  --bg-2: #0c1422;
  --panel: rgba(16, 24, 38, 0.92);
  --line: rgba(186, 210, 245, 0.14);
  --text: #eef3fb;
  --mute: #93a4bd;
  --accent: #7dd3fc;
  --accent-2: #818cf8;
  --ink: #071018;
  --danger: #fda4af;
  --ok: #6ee7b7;
  --warn: #fcd34d;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  --radius: 18px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font: 15px/1.65 "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(900px 420px at 80% -10%, rgba(129, 140, 248, 0.18), transparent 60%),
    radial-gradient(700px 380px at 0% 0%, rgba(56, 189, 248, 0.12), transparent 55%),
    var(--bg);
}
a { color: var(--accent); text-underline-offset: 3px; }
.top {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  gap: 1rem 1.4rem;
  align-items: center;
  flex-wrap: wrap;
  padding: 0.85rem 1.4rem;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 11, 18, 0.82);
  backdrop-filter: blur(18px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 650;
  letter-spacing: 0.08em;
}
.brand b, .mark {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  background:
    linear-gradient(160deg, #e0f2fe, #38bdf8 42%, #6366f1);
  box-shadow: 0 8px 20px rgba(56, 189, 248, 0.28);
}
.logo { width: 28px; height: 28px; object-fit: contain; border-radius: 8px; }
.panel .logo { width: 56px; height: 56px; }
.who {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.2rem 0.7rem;
  color: var(--mute);
  font-size: 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}
.who i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ok);
}
nav { display: flex; flex-wrap: wrap; gap: 0.25rem; align-items: center; margin-left: auto; }
nav a {
  color: var(--mute);
  text-decoration: none;
  padding: 0.38rem 0.72rem;
  border-radius: 999px;
}
nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.04); }
nav a.on { color: var(--text); background: rgba(125, 211, 252, 0.12); }
nav a.navbtn, .btn, button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 0.55rem 1rem;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  color: var(--ink);
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
}
nav a.navbtn { padding: 0.4rem 0.9rem; }
.btn.line, button.line, nav a.out {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}
main { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 1.6rem 1.3rem 3rem; }
.pagehead { margin: 0.2rem 0 1.1rem; }
.pagehead h1 { margin-bottom: 0.35rem; font-size: 1.7rem; letter-spacing: -0.03em; }
.pagehead p { margin: 0; max-width: 46rem; }
h1, h2, h3 { margin: 0 0 0.7rem; font-weight: 640; letter-spacing: -0.02em; }
h1 { font-size: 1.45rem; }
h2 { font-size: 1.12rem; }
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
  margin: 0 0 1rem;
  box-shadow: var(--shadow);
}
label { display: block; margin: 0.7rem 0; color: var(--mute); font-size: 0.86rem; }
input, select, textarea {
  width: 100%;
  margin-top: 0.32rem;
  padding: 0.68rem 0.75rem;
  color: var(--text);
  background: rgba(5, 10, 18, 0.72);
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
}
input:focus, select:focus, textarea:focus { border-color: rgba(125, 211, 252, 0.7); box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15); }
textarea { min-height: 7rem; }
input[type="checkbox"] { width: auto; margin: 0 0.4rem 0 0; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.stats, .pricing, .features { display: grid; gap: 0.9rem; }
.stats { grid-template-columns: repeat(4, 1fr); }
.features { grid-template-columns: repeat(3, 1fr); }
.pricing { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
.stat span, .kicker { display: block; color: var(--mute); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; }
.stat strong { display: block; margin-top: 0.35rem; font-size: 1.45rem; letter-spacing: -0.03em; }
table { width: 100%; border-collapse: collapse; }
.panel { overflow-x: auto; }
th, td { text-align: left; padding: 0.72rem 0.4rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { color: var(--mute); font-size: 12px; font-weight: 560; }
tr:last-child td { border-bottom: 0; }
.flash { padding: 0.75rem 0.9rem; border-radius: 12px; border: 1px solid var(--line); background: rgba(16, 24, 38, 0.95); margin-bottom: 1rem; }
.flash.bad { color: var(--danger); }
.flash.ok { color: var(--ok); }
.muted { color: var(--mute); }
.terminal, code, .copyline {
  display: block;
  padding: 0.8rem 0.9rem;
  overflow-x: auto;
  color: #dbeafe;
  background: #070d16;
  border: 1px solid var(--line);
  border-radius: 12px;
  font-family: ui-monospace, "Cascadia Mono", monospace;
  font-size: 12.5px;
}
.checks { list-style: none; margin: 0.2rem 0 0; padding: 0; }
.checks li { padding: 0.45rem 0; border-bottom: 1px solid var(--line); }
.checks .ok { color: var(--ok); }
.checks .wait { color: var(--warn); }
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
  font-size: 12px;
  color: var(--mute);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
}
.pill.ok { color: var(--ok); }
.pill.wait { color: var(--warn); }
.pill.bad { color: var(--danger); }
.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.4rem;
  align-items: center;
  padding: 1.2rem 0 0.4rem;
}
.hero h1 { font-size: clamp(2rem, 4vw, 3.15rem); line-height: 1.18; letter-spacing: -0.045em; max-width: 11em; }
.hero .lead { font-size: 1.05rem; max-width: 38rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.2rem; }
.console { padding: 0.9rem; }
.console .bar { display: flex; gap: 0.35rem; margin-bottom: 0.8rem; }
.console .bar i { width: 8px; height: 8px; border-radius: 50%; background: #334155; }
.bubble { margin: 0.45rem 0; padding: 0.55rem 0.7rem; border-radius: 12px; background: rgba(255, 255, 255, 0.04); }
.bubble.me { margin-left: 18%; background: rgba(56, 189, 248, 0.12); }
.section { margin: 2.2rem 0; }
.section h2 { font-size: 1.45rem; }
.price { font-size: 1.7rem; letter-spacing: -0.04em; }
.plan.featured { outline: 1px solid rgba(125, 211, 252, 0.55); background: linear-gradient(180deg, rgba(56, 189, 248, 0.1), var(--panel) 28%); }
.channels { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem 0 0; }
.foot {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--mute);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.auth {
  display: grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 1.2rem;
  align-items: center;
  min-height: 68vh;
}
.step-tools, .slot-tools, .pick-list { display: flex; flex-wrap: wrap; gap: 0.45rem 0.9rem; }
.collect-row, .write-row { margin-top: 0.8rem; padding-top: 0.8rem; border-top: 1px solid var(--line); }
.empty { padding: 1.2rem 0.2rem; color: var(--mute); }
@media (max-width: 860px) {
  .hero, .auth, .stats, .features, .pricing, .row { grid-template-columns: 1fr; }
  nav { margin-left: 0; }
  .hero h1 { font-size: 2rem; }
}