:root {
    --bg: #FAF9F5;
    --card: #FFFFFF;
    --border: #E8E5DE;
    --ink: #1F1E1D;
    --muted: #8E8B83;
    --accent: #C96442;
    --accent-soft: rgba(201, 100, 66, 0.09);
    --dark: #2B2A27;
    --blue: #6B8CAE;
    --green: #7A9E7E;
    --purple: #9C8AA5;
    --serif: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
    --sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", sans-serif;
    --mono: "SF Mono", "Menlo", monospace;
  }
  * { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--bg);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  .wrap { max-width: 1040px; margin: 0 auto; padding: 0 28px; }

  /* ---------- nav ---------- */
  nav {
    display: flex; align-items: center; justify-content: space-between;
    padding: 22px 0;
  }
  .logo { display: flex; align-items: center; gap: 10px; font-family: var(--serif); font-size: 19px; font-weight: 700; }
  .logo-mark { display: inline-flex; gap: 3px; }
  .logo-mark span { width: 8px; height: 8px; border-radius: 50%; }
  .logo-mark span:nth-child(1) { background: var(--accent); }
  .logo-mark span:nth-child(2) { background: var(--blue); }
  .logo-mark span:nth-child(3) { background: var(--green); }
  .nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
  .nav-links a { color: var(--muted); text-decoration: none; }
  .nav-links a:hover, .nav-links a:focus-visible { color: var(--ink); }
  a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

  .btn {
    display: inline-block; text-decoration: none; cursor: pointer;
    font-family: var(--sans); font-size: 14.5px; font-weight: 600;
    padding: 10px 22px; border-radius: 10px; border: 1px solid transparent;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
  }
  .btn-primary { background: var(--accent); color: #fff; }
  .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(201,100,66,0.25); }
  .btn-ghost { background: transparent; color: var(--ink); border-color: var(--border); }
  .btn-ghost:hover { border-color: var(--muted); }
  .btn-small { padding: 7px 16px; font-size: 13px; }

  /* ---------- hero ---------- */
  .hero {
    display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px;
    align-items: center; padding: 64px 0 88px;
  }
  .eyebrow {
    font-size: 12px; font-weight: 700; letter-spacing: 0.18em;
    color: var(--accent); text-transform: uppercase; margin-bottom: 18px;
  }
  h1 {
    font-family: var(--serif); font-size: clamp(34px, 4.6vw, 52px);
    line-height: 1.22; font-weight: 700; text-wrap: balance; margin-bottom: 22px;
  }
  h1 em { font-style: normal; color: var(--accent); }
  .hero-sub {
    font-size: 17px; color: var(--muted); max-width: 30em; margin-bottom: 32px;
  }
  .hero-cta { display: flex; gap: 14px; align-items: center; margin-bottom: 18px; }
  .fine { font-size: 13px; color: var(--muted); }
  .fine b { color: var(--ink); font-weight: 600; }

  /* ---------- 面板复刻 ---------- */
  .stage { position: relative; }
  .menubar {
    display: flex; align-items: center; gap: 14px; justify-content: flex-end;
    background: var(--dark); color: #ddd; border-radius: 10px 10px 0 0;
    padding: 7px 14px; font-size: 12px; font-family: var(--sans);
  }
  .menubar .mb-item { opacity: 0.55; }
  .menubar .mb-app {
    display: flex; align-items: center; gap: 5px; opacity: 1;
    background: rgba(255,255,255,0.14); border-radius: 5px; padding: 2px 8px;
  }
  .mb-workers { display: inline-flex; gap: 2px; }
  .mb-workers i { width: 5px; height: 5px; border-radius: 50%; background: #eee; }
  .mb-count { color: #F0A98E; font-weight: 700; }

  .panel {
    background: var(--card); border: 1px solid var(--border);
    border-radius: 0 0 14px 14px; padding: 16px;
    box-shadow: 0 24px 60px rgba(31,30,29,0.10);
  }
  .panel-head {
    display: flex; justify-content: space-between; align-items: baseline;
    padding-bottom: 12px; border-bottom: 1px solid var(--border); margin-bottom: 14px;
  }
  .panel-title { font-family: var(--serif); font-weight: 700; font-size: 15px; }
  .panel-counts { font-size: 12px; color: var(--muted); display: flex; gap: 12px; }
  .panel-counts b { color: var(--accent); }

  .kicker {
    font-size: 10.5px; font-weight: 700; letter-spacing: 0.22em; color: var(--accent);
    margin-bottom: 8px;
  }
  .focus-card {
    border: 1.5px solid rgba(201,100,66,0.5); border-radius: 12px;
    padding: 13px 14px; margin-bottom: 14px; background: var(--card);
    box-shadow: 0 4px 14px rgba(201,100,66,0.08);
  }
  .t-row { display: flex; align-items: center; gap: 8px; }
  .dot { width: 7px; height: 7px; border-radius: 50%; flex: none; }
  .dot-blue { background: var(--blue); } .dot-green { background: var(--green); } .dot-purple { background: var(--purple); }
  .proj { font-family: var(--serif); font-size: 16.5px; font-weight: 700; }
  .t-note { font-size: 12px; color: var(--muted); margin: 5px 0 3px; }
  .t-reason { font-size: 12.5px; color: var(--accent); }
  .t-time { margin-left: auto; font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }

  .sec-label { display: flex; gap: 6px; align-items: center; font-size: 12px; font-weight: 600; color: var(--muted); margin: 12px 0 8px; }
  .sec-label .dot { width: 6px; height: 6px; }
  .sec-label.waiting { color: var(--accent); }
  .sec-label.waiting .dot { background: var(--accent); }
  .sec-label .dot { background: var(--muted); }

  .task {
    border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px;
    margin-bottom: 8px; background: var(--card); font-size: 12.5px;
  }
  .task .proj { font-family: var(--sans); font-size: 13px; font-weight: 600; }
  .task.waiting-weak { border-left: 3px solid rgba(201,100,66,0.4); }
  .task.signal { border-left: 3px solid var(--accent); border-color: rgba(201,100,66,0.4); }
  .task .sub { color: var(--muted); margin-top: 3px; }

  @keyframes signal-in {
    0% { opacity: 0; transform: translateY(8px); }
    55% { opacity: 1; transform: translateY(0); }
    70% { box-shadow: 0 0 0 6px rgba(201,100,66,0.14); }
    100% { box-shadow: 0 0 0 0 rgba(201,100,66,0); }
  }
  .task.signal { animation: signal-in 1.6s ease 1.1s backwards; }

  .miniboard {
    position: absolute; top: -26px; right: -26px; width: 212px;
    background: rgba(250,249,245,0.97); border: 1px solid rgba(201,100,66,0.35);
    border-radius: 11px; padding: 10px 12px; font-size: 11.5px;
    box-shadow: 0 14px 34px rgba(31,30,29,0.14); transform: rotate(1.6deg);
  }
  .miniboard .head { display: flex; gap: 6px; align-items: center; font-weight: 700; color: var(--accent); margin-bottom: 6px; }
  .miniboard .head .dot { background: var(--accent); }
  .miniboard .row { display: flex; gap: 6px; align-items: center; color: var(--muted); margin-top: 4px; }
  .miniboard .row b { color: var(--ink); font-weight: 600; }
  .miniboard .row .dot { width: 5px; height: 5px; }

  /* ---------- 痛点 ---------- */
  .thesis { padding: 84px 0 30px; text-align: center; }
  .thesis h2 {
    font-family: var(--serif); font-size: clamp(24px, 3.2vw, 34px);
    font-weight: 700; text-wrap: balance; max-width: 22em; margin: 0 auto 14px;
  }
  .thesis p { color: var(--muted); max-width: 36em; margin: 0 auto; }
  .pains { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 40px 0 30px; }
  .pain {
    background: var(--card); border: 1px solid var(--border); border-radius: 12px;
    padding: 20px 22px; font-size: 14px;
  }
  .pain q { font-family: var(--serif); font-size: 16px; font-weight: 600; display: block; margin-bottom: 8px; quotes: "「" "」"; }
  .pain span { color: var(--muted); font-size: 13px; }

  /* ---------- features ---------- */
  .features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding: 40px 0 84px; }
  .feature {
    background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 26px 24px;
  }
  .feature .glyph { height: 34px; display: flex; align-items: center; gap: 5px; margin-bottom: 14px; }
  .glyph .pill { height: 8px; border-radius: 4px; }
  .feature h3 { font-family: var(--serif); font-size: 19px; margin-bottom: 8px; }
  .feature p { font-size: 14px; color: var(--muted); }
  .feature p code { font-family: var(--mono); font-size: 12px; background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; }

  /* ---------- how ---------- */
  .how { padding: 0 0 84px; }
  .how h2, .faq h2 { font-family: var(--serif); font-size: 28px; margin-bottom: 28px; }
  .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .step { border-top: 2px solid var(--ink); padding-top: 16px; }
  .step .n { font-family: var(--serif); font-size: 15px; font-weight: 700; color: var(--accent); }
  .step h3 { font-size: 16px; margin: 4px 0 8px; }
  .step p { font-size: 14px; color: var(--muted); }
  .step pre {
    margin-top: 10px; background: var(--dark); color: #E8E5DE; font-family: var(--mono);
    font-size: 12px; padding: 10px 12px; border-radius: 8px; overflow-x: auto; line-height: 1.6;
  }

  /* ---------- privacy ---------- */
  .privacy { background: var(--dark); color: #F2F0EA; }
  .privacy .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding-top: 64px; padding-bottom: 64px; }
  .privacy h2 { font-family: var(--serif); font-size: 28px; margin-bottom: 12px; text-wrap: balance; }
  .privacy p { font-size: 14.5px; color: rgba(242,240,234,0.65); }
  .flow { font-family: var(--mono); font-size: 13px; line-height: 2.2; }
  .flow .node { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.16); border-radius: 7px; padding: 3px 10px; white-space: nowrap; }
  .flow .arr { color: var(--accent); padding: 0 6px; }
  .flow .never { display: block; margin-top: 10px; color: rgba(242,240,234,0.5); font-size: 12px; }
  .flow .never s { text-decoration-color: var(--accent); }

  /* ---------- faq ---------- */
  .faq { padding: 84px 0; max-width: 720px; }
  .faq details { border-bottom: 1px solid var(--border); padding: 16px 0; }
  .faq summary { cursor: pointer; font-weight: 600; font-size: 15.5px; list-style: none; display: flex; justify-content: space-between; }
  .faq summary::after { content: "+"; color: var(--accent); font-size: 18px; }
  .faq details[open] summary::after { content: "–"; }
  .faq details p { color: var(--muted); font-size: 14px; padding-top: 8px; max-width: 60ch; }
  .faq details code { font-family: var(--mono); font-size: 12.5px; }

  /* ---------- footer ---------- */
  .cta-end { text-align: center; padding: 20px 0 96px; }
  .cta-end h2 { font-family: var(--serif); font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 26px; text-wrap: balance; }
  footer { border-top: 1px solid var(--border); padding: 26px 0 40px; font-size: 13px; color: var(--muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
  footer a { color: var(--muted); }

  @media (prefers-reduced-motion: reduce) {
    .task.signal { animation: none; }
    html { scroll-behavior: auto; }
  }
  @media (max-width: 860px) {
    .hero { grid-template-columns: 1fr; padding: 36px 0 64px; }
    .miniboard { right: 0; top: -34px; }
    .pains, .features, .steps { grid-template-columns: 1fr; }
    .privacy .wrap { grid-template-columns: 1fr; }
    .nav-links .btn { display: none; }
  }