/* CoucouMBTI landing — ink & gold, post-office narrative */

/* JetBrains Mono 自托管(fonts/ 目录随站部署):时钟/倒计时是视觉核心,
   不依赖 Google Fonts CDN(中国大陆不通,挂了会退回系统等宽、每台设备一张脸) */
@font-face {
  font-family: 'JetBrains Mono';
  src: url('fonts/JetBrainsMono-Medium.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('fonts/JetBrainsMono-SemiBold.woff2') format('woff2');
  font-weight: 600;
  font-display: swap;
}

:root {
  --bg: #171310;
  --bg-2: #1f1913;
  --panel: #221b15;
  --line: rgba(232, 201, 136, 0.14);
  --line-soft: rgba(232, 201, 136, 0.08);
  --gold: #e8c988;
  --gold-dim: rgba(232, 201, 136, 0.65);
  --brown: #a67c52;
  --brown-light: #c9a06a;
  --ink: #f4ede2;
  --ink-dim: #b9ac9c;
  --ink-faint: #7d7264;
  --radius: 18px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
.serif { font-family: 'Playfair Display', Georgia, 'Times New Roman', serif; }

/* ambient glow */
.bg-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(166, 124, 82, 0.22), transparent 60%),
    radial-gradient(900px 500px at -10% 40%, rgba(232, 201, 136, 0.07), transparent 60%),
    radial-gradient(700px 500px at 50% 110%, rgba(166, 124, 82, 0.12), transparent 60%);
}

/* nav — sticky floating bar */
.nav {
  position: sticky; top: 14px; z-index: 50;
  width: min(1120px, calc(100% - 32px)); margin: 14px auto 0;
  padding: 13px 22px;
  display: flex; align-items: center; gap: 26px;
  background: rgba(31, 25, 19, 0.82);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line-soft); border-radius: 18px;
}
.nav__brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--gold); text-decoration: none;
  font-size: 13px; letter-spacing: 3px; font-weight: 600;
}
.nav__brand img { border-radius: 8px; }
.nav__links { display: flex; gap: 22px; margin-left: auto; }
.nav__links a { color: var(--ink-dim); text-decoration: none; font-size: 14px; transition: color .2s; }
.nav__links a:hover { color: var(--ink); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 999px; text-decoration: none; font-size: 15px; font-weight: 600;
  padding: 12px 26px; transition: transform .15s ease, opacity .2s, box-shadow .2s;
}
.btn:active { transform: scale(0.97); }
.btn--primary {
  background: linear-gradient(135deg, var(--brown-light), var(--brown));
  color: #fff; box-shadow: 0 8px 28px rgba(166, 124, 82, 0.35);
}
.btn--primary:hover { box-shadow: 0 10px 34px rgba(166, 124, 82, 0.5); }
.btn--ghost {
  color: var(--gold); border: 1px solid var(--line);
}
.btn--ghost:hover { border-color: var(--gold-dim); }
.btn--sm { padding: 9px 20px; font-size: 13.5px; }
.icon-btn {
  width: 38px; height: 38px; flex-shrink: 0;
  border-radius: 12px; background: transparent;
  border: 1px solid var(--line-soft); color: var(--ink-dim);
  font-size: 14px; font-family: inherit; cursor: pointer;
  transition: color .2s, border-color .2s;
}
.icon-btn:hover { color: var(--ink); border-color: var(--line); }

/* hero */
.hero {
  max-width: 1120px; margin: 0 auto; padding: 64px 24px 40px;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center;
}
.eyebrow {
  display: inline-block; font-size: 12.5px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--gold); border: 1px solid var(--line); border-radius: 999px; padding: 7px 18px;
}
.hero h1 {
  margin-top: 22px; font-size: clamp(38px, 4.6vw, 58px); line-height: 1.18; font-weight: 700;
  letter-spacing: 0.5px;
}
.hero h1 em { font-style: normal; color: var(--gold); }
.lede { margin-top: 20px; font-size: 17px; line-height: 1.85; color: var(--ink-dim); max-width: 480px; }
.hero__cta { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero__meta { margin-top: 26px; display: flex; gap: 20px; flex-wrap: wrap; list-style: none; }
.hero__meta li { font-size: 13px; color: var(--ink-faint); display: flex; align-items: center; gap: 7px; }
.hero__meta li::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--gold-dim); }

/* phone mock */
.hero__art { display: flex; justify-content: center; position: relative; }
.phone {
  width: 310px; height: 620px; border-radius: 46px; position: relative;
  background: linear-gradient(160deg, #2b2118 0%, #1d1610 100%);
  border: 1px solid rgba(232, 201, 136, 0.22);
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.6), inset 0 0 0 8px #0e0b08;
  overflow: hidden;
  transform: rotate(2.5deg);
}
.phone__notch {
  position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
  width: 96px; height: 22px; border-radius: 999px; background: #0e0b08;
}
.phone__head { position: relative; margin-top: 52px; display: flex; align-items: center; justify-content: center; }
.phone__avatar {
  position: absolute; left: 20px; width: 34px; height: 34px;
  border-radius: 50%; object-fit: cover;
  border: 1px solid rgba(232, 201, 136, 0.25);
}
.phone__school {
  text-align: center; font-size: 15px; color: rgba(244, 237, 226, 0.55);
  letter-spacing: 1px;
}
.phone__pill {
  margin: 26px auto 0; width: max-content; display: flex; align-items: center; gap: 5px;
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid var(--line-soft); border-radius: 12px; padding: 7px 12px;
  font-variant-numeric: tabular-nums;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}
.phone__pill-label { font-size: 10px; color: var(--gold); margin-right: 3px; }
.phone__pill b {
  background: rgba(0, 0, 0, 0.35); border-radius: 6px; padding: 3px 7px;
  font-weight: 600; font-size: 11px; color: #f4ede2; display: inline-flex; align-items: baseline;
}
.phone__pill b i { font-style: normal; font-size: 8px; color: rgba(244, 237, 226, 0.5); margin-left: 2px; }
.phone__pill-colon { color: rgba(244, 237, 226, 0.4); font-size: 10px; }
.clock-zone { position: relative; margin-top: 40px; height: 200px; display: flex; align-items: center; justify-content: center; }
.ripple {
  position: absolute; left: 50%; top: 50%; width: 150px; height: 150px;
  border: 1px solid rgba(232, 201, 136, 0.28); border-radius: 50%;
  transform: translate(-50%, -50%) scale(0.5); opacity: 0;
  animation: ripple 5.2s ease-out infinite;
}
.ripple:nth-child(2) { animation-delay: 1.3s; }
.ripple:nth-child(3) { animation-delay: 2.6s; }
.ripple:nth-child(4) { animation-delay: 3.9s; }
@keyframes ripple {
  0% { transform: translate(-50%, -50%) scale(0.45); opacity: 0; }
  12% { opacity: 0.75; }
  100% { transform: translate(-50%, -50%) scale(2.15); opacity: 0; }
}
.phone__clock {
  position: relative; font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 72px; font-weight: 500; color: #f6efe0; letter-spacing: 3px;
  text-shadow: 0 0 34px rgba(232, 201, 136, 0.35);
}
.phone__divider {
  margin-top: 6px; display: flex; align-items: center; justify-content: center; gap: 12px;
  color: rgba(244, 237, 226, 0.5); font-size: 10px; letter-spacing: 2.5px;
}
.phone__divider i { display: block; width: 44px; height: 1px; background: linear-gradient(to left, rgba(232,201,136,0.4), transparent); }
.phone__divider i:last-child { background: linear-gradient(to right, rgba(232,201,136,0.4), transparent); }
.phone__btn {
  margin: 44px auto 0; width: max-content;
  background: linear-gradient(135deg, #c9a06a, #a67c52); color: #fff;
  font-size: 14.5px; font-weight: 600; border-radius: 999px; padding: 13px 30px;
  box-shadow: 0 0 30px rgba(201, 160, 106, 0.35);
  animation: breathe 3.4s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { box-shadow: 0 0 22px rgba(201, 160, 106, 0.25); }
  50% { box-shadow: 0 0 40px rgba(201, 160, 106, 0.5); }
}
.phone__sig {
  margin-top: 40px; text-align: center; font-size: 10px; color: rgba(244, 237, 226, 0.42);
  display: flex; align-items: center; justify-content: center; gap: 7px;
}
.phone__sig svg { flex-shrink: 0; opacity: 0.85; }
.hero__badge {
  position: absolute; right: -6px; bottom: 44px;
  background: rgba(34, 27, 21, 0.9); backdrop-filter: blur(8px);
  border: 1px solid var(--line); border-radius: 14px; padding: 12px 18px;
  display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--ink-dim);
  animation: floaty 5s ease-in-out infinite;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}
.hero__badge b { color: var(--gold); font-size: 17px; font-weight: 700; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* strip */
.strip {
  max-width: 1120px; margin: 30px auto 0; padding: 18px 24px;
  display: flex; align-items: center; justify-content: center; gap: 18px; flex-wrap: wrap;
  color: var(--ink-faint); font-size: 13.5px; letter-spacing: 1px;
  border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft);
}
.strip i { width: 4px; height: 4px; border-radius: 50%; background: var(--gold-dim); }

/* sections */
.section { max-width: 1120px; margin: 0 auto; padding: 88px 24px 0; }
.section__head { text-align: center; max-width: 640px; margin: 0 auto 46px; }
.section__head h2 { margin-top: 18px; font-size: clamp(26px, 3.2vw, 38px); line-height: 1.35; font-weight: 700; }
.section__head p { margin-top: 14px; color: var(--ink-dim); font-size: 15.5px; line-height: 1.8; }

/* how it works */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step {
  background: linear-gradient(170deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 30px 26px;
  position: relative; overflow: hidden;
}
.step__num {
  position: absolute; top: 14px; right: 20px; font-size: 58px; font-weight: 800;
  color: rgba(232, 201, 136, 0.07); font-family: Georgia, serif;
}
.step__icon { font-size: 30px; }
.step h3 { margin-top: 16px; font-size: 18px; }
.step p { margin-top: 10px; font-size: 14px; line-height: 1.8; color: var(--ink-dim); }

/* features */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: linear-gradient(170deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 26px 24px;
  transition: transform .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--line); }
.card__icon { font-size: 26px; }
.card h3 { margin-top: 14px; font-size: 16.5px; }
.card p { margin-top: 9px; font-size: 13.8px; line-height: 1.75; color: var(--ink-dim); }

/* privacy band */
.privacy {
  margin-top: 88px; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(166, 124, 82, 0.06), transparent);
}
.privacy__inner { max-width: 780px; margin: 0 auto; padding: 72px 24px; text-align: center; }
.privacy__inner h2 { margin-top: 18px; font-size: clamp(24px, 3vw, 34px); }
.privacy__inner p { margin-top: 16px; color: var(--ink-dim); font-size: 15.5px; line-height: 1.9; }
.privacy__inner a { color: var(--gold); text-decoration: none; }

/* final cta */
.cta { text-align: center; padding: 96px 24px; }
.cta h2 { font-size: clamp(28px, 3.6vw, 44px); line-height: 1.3; }
.cta .hero__cta { justify-content: center; }
.cta__note { margin-top: 18px; font-size: 13px; color: var(--ink-faint); }

/* footer */
.footer {
  border-top: 1px solid var(--line-soft); padding: 34px 24px calc(34px + env(safe-area-inset-bottom));
  text-align: center; color: var(--ink-faint); font-size: 13px; line-height: 2.1;
}
.footer a { color: var(--gold-dim); text-decoration: none; margin: 0 10px; }
.footer a:hover { color: var(--gold); }

/* reveal on scroll */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* responsive */
@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; text-align: center; }
  .lede { margin-left: auto; margin-right: auto; }
  .hero__cta, .hero__meta { justify-content: center; }
  .hero__art { margin-top: 26px; }
  .hero__badge { right: 8px; }
  .steps, .grid { grid-template-columns: 1fr; }
  .nav__links { display: none; }
}