/* TaoVerse — product landing page (pure CSS, no build step). Zen Modernism. */
:root {
  --ink: #0D1B2A;        /* 深黛蓝 background */
  --ink-soft: #12263A;
  --panel: #132436;      /* raised surfaces */
  --gold: #C9A84C;       /* 古铜金 accent */
  --gold-dim: #9C813A;
  --slate: #8F9CA6;      /* 黛灰 text */
  --slate-dim: #5E6A73;
  --hairline: rgba(255, 255, 255, 0.06);
  --content: 1120px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--slate);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
.display { font-family: 'Cinzel', serif; }
.up { text-transform: uppercase; }
.wrap { max-width: var(--content); margin: 0 auto; padding: 0 1.5rem; }
.accent { color: var(--gold); }

/* ── Zen Circle — slow breathing loop behind hero ── */
@keyframes zen-breathe {
  0%, 100% { transform: translate(-50%, -50%) scale(0.92); opacity: 0.22; }
  50%      { transform: translate(-50%, -50%) scale(1.05); opacity: 0.42; }
}
.zen-circle {
  position: absolute; left: 50%; top: 340px;
  width: min(78vw, 680px); aspect-ratio: 1;
  transform: translate(-50%, -50%);
  pointer-events: none; z-index: 0;
  animation: zen-breathe 9s ease-in-out infinite;
}

/* ── Top nav ── */
.nav {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--hairline);
  background: rgba(13, 27, 42, 0.72); backdrop-filter: blur(12px);
}
.nav-inner { max-width: var(--content); margin: 0 auto; padding: 0.9rem 1.5rem; display: flex; align-items: center; justify-content: space-between; }
.nav-brand { font-size: 1.35rem; letter-spacing: 0.2em; color: var(--gold); }
.nav-links { display: none; gap: 2rem; }
.nav-links a { font-size: 0.85rem; color: var(--slate); transition: color 0.3s ease; }
.nav-links a:hover { color: var(--gold); }
.nav-cta { font-size: 0.8rem; padding: 0.5rem 1.1rem; }

/* ── Buttons (bronze hairline + ripple) ── */
.btn-zen {
  position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: 0.5rem;
  border: 0.5px solid rgba(201, 168, 76, 0.7); border-radius: 9999px;
  color: var(--gold); background: transparent; cursor: pointer;
  font-family: inherit; letter-spacing: 0.05em; transition: background 0.3s ease;
}
.btn-zen:hover { background: rgba(201, 168, 76, 0.08); }
.btn-zen::after {
  content: ''; position: absolute; left: 50%; top: 50%; width: 0; height: 0; border-radius: 9999px;
  background: rgba(201, 168, 76, 0.25); transform: translate(-50%, -50%);
  transition: width 0.5s ease, height 0.5s ease, opacity 0.6s ease; opacity: 0;
}
.btn-zen:active::after { width: 260%; height: 260%; opacity: 1; transition: 0s; }

/* ── Hero ── */
.hero { position: relative; text-align: center; padding: 6rem 0 4rem; overflow: hidden; }
.hero-eyebrow { font-size: 12px; letter-spacing: 0.4em; color: rgba(201, 168, 76, 0.85); margin-bottom: 1.75rem; position: relative; z-index: 1; }
.hero h1 { position: relative; z-index: 1; font-size: 2.6rem; line-height: 1.12; color: #E8ECEF; font-weight: 600; }
.hero-lead { position: relative; z-index: 1; margin: 1.75rem auto 0; max-width: 40rem; font-size: 1rem; color: var(--slate); }
.hero-cta { position: relative; z-index: 1; margin-top: 2.5rem; display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 1rem; }

/* ── Store badges ── */
.badge {
  display: inline-flex; align-items: center; gap: 0.65rem;
  border: 0.5px solid rgba(201, 168, 76, 0.5); border-radius: 0.75rem;
  padding: 0.6rem 1.1rem; background: rgba(255, 255, 255, 0.02);
  transition: border-color 0.3s ease, background 0.3s ease; cursor: pointer;
}
.badge:hover { border-color: var(--gold); background: rgba(201, 168, 76, 0.06); }
.badge .glyph { font-size: 1.6rem; color: var(--gold); line-height: 1; }
.badge .txt { text-align: left; }
.badge .txt small { display: block; font-size: 9px; letter-spacing: 0.15em; color: var(--slate-dim); }
.badge .txt b { font-size: 0.95rem; color: #E8ECEF; font-weight: 500; }
.badge .soon { font-size: 8px; letter-spacing: 0.1em; color: var(--gold); border: 0.5px solid rgba(201,168,76,0.4); border-radius: 4px; padding: 1px 4px; margin-left: 0.35rem; vertical-align: middle; }

/* ── Section rhythm ── */
.section { padding: 5rem 0; position: relative; z-index: 1; }
.section-head { text-align: center; margin-bottom: 3.5rem; }
.section-eyebrow { font-size: 11px; letter-spacing: 0.35em; color: var(--gold); margin-bottom: 1rem; }
.section-head h2 { font-size: 2rem; color: #E8ECEF; font-weight: 600; }
.section-head p { margin: 1rem auto 0; max-width: 34rem; font-size: 0.95rem; color: var(--slate); }
.divider { height: 1px; background: linear-gradient(to right, transparent, var(--hairline), transparent); }

/* ── Feature cards (四大修行维度) + ink-wash bloom ── */
.features { display: grid; grid-template-columns: 1fr; gap: 1.25rem; }
.feature {
  position: relative; border-radius: 1rem; border: 1px solid var(--hairline);
  background: rgba(19, 36, 54, 0.5); padding: 2rem;
  transition: border-color 0.4s ease, box-shadow 0.6s ease;
}
.feature::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(120% 120% at 50% 0%, rgba(201, 168, 76, 0.14), transparent 60%);
  opacity: 0; transition: opacity 0.6s ease; pointer-events: none;
}
.feature:hover::before { opacity: 1; }
.feature:hover { border-color: rgba(201, 168, 76, 0.45); box-shadow: 0 0 44px -14px rgba(201, 168, 76, 0.3); }
.feature-glyph {
  display: flex; align-items: center; justify-content: center;
  height: 3.25rem; width: 3.25rem; border-radius: 9999px;
  border: 1px solid rgba(201, 168, 76, 0.35); color: var(--gold);
  font-size: 1.4rem; margin-bottom: 1.5rem;
}
.feature h3 { font-size: 1.2rem; color: #E8ECEF; margin-bottom: 0.6rem; }
.feature p { font-size: 0.9rem; color: var(--slate); }

/* ── Journey (rank progression) ── */
.journey { display: flex; flex-direction: column; gap: 0; max-width: 640px; margin: 0 auto; }
.step { display: flex; align-items: flex-start; gap: 1.25rem; padding: 1rem 0; position: relative; }
.step:not(:last-child)::after { content: ''; position: absolute; left: 1.4rem; top: 3.4rem; bottom: -0.2rem; width: 1px; background: var(--hairline); }
.step-dot {
  flex-shrink: 0; height: 2.8rem; width: 2.8rem; border-radius: 9999px;
  border: 1px solid rgba(201, 168, 76, 0.35); color: var(--gold);
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
  background: var(--ink); position: relative; z-index: 1;
}
.step.reached .step-dot { background: rgba(201, 168, 76, 0.12); border-color: var(--gold); }
.step-body h4 { font-size: 1.05rem; color: #E8ECEF; }
.step-body .cp { font-size: 0.8rem; color: var(--gold); letter-spacing: 0.05em; margin-top: 0.15rem; }
.step-body p { font-size: 0.85rem; color: var(--slate); margin-top: 0.35rem; }

/* ── Showcase (CSS phone mockup) ── */
.showcase { display: grid; grid-template-columns: 1fr; gap: 3rem; align-items: center; }
.phone {
  width: 260px; height: 540px; margin: 0 auto; border-radius: 2.4rem;
  border: 1px solid rgba(201, 168, 76, 0.3); background: var(--ink-soft);
  padding: 0.7rem; box-shadow: 0 30px 80px -30px rgba(201, 168, 76, 0.35); position: relative;
}
.phone::before { content: ''; position: absolute; top: 0.9rem; left: 50%; transform: translateX(-50%); width: 90px; height: 6px; border-radius: 9999px; background: rgba(255,255,255,0.12); }
.phone-screen { height: 100%; border-radius: 1.9rem; background: linear-gradient(160deg, #12263A, #0D1B2A); border: 1px solid var(--hairline); padding: 2.4rem 1.4rem 1.4rem; overflow: hidden; display: flex; flex-direction: column; }
.ps-label { font-size: 9px; letter-spacing: 0.3em; color: var(--slate-dim); text-transform: uppercase; }
.ps-verse { margin-top: 0.6rem; font-family: 'Cinzel', serif; font-size: 1.05rem; color: #E8ECEF; line-height: 1.5; }
.ps-verse span { color: var(--gold); }
.ps-attr { margin-top: 0.5rem; font-size: 0.7rem; color: var(--slate-dim); }
.ps-ring { margin: 1.6rem auto; width: 120px; height: 120px; border-radius: 9999px; border: 1px solid rgba(201,168,76,0.4); display: flex; align-items: center; justify-content: center; flex-direction: column; }
.ps-ring b { font-family: 'Cinzel', serif; color: var(--gold); font-size: 1.3rem; }
.ps-ring small { font-size: 0.65rem; color: var(--slate-dim); letter-spacing: 0.1em; }
.ps-bar { margin-top: auto; }
.ps-bar .t { display: flex; justify-content: space-between; font-size: 0.65rem; color: var(--slate-dim); margin-bottom: 0.35rem; }
.ps-bar .track { height: 4px; border-radius: 9999px; background: rgba(255,255,255,0.1); overflow: hidden; }
.ps-bar .track > span { display: block; height: 100%; border-radius: 9999px; background: linear-gradient(to right, var(--gold-dim), var(--gold)); }
.showcase-copy h2 { font-size: 1.7rem; color: #E8ECEF; margin-bottom: 1.25rem; }
.showcase-list { list-style: none; display: flex; flex-direction: column; gap: 1rem; }
.showcase-list li { display: flex; gap: 0.75rem; font-size: 0.92rem; color: var(--slate); }
.showcase-list .mark { color: var(--gold); flex-shrink: 0; }

/* ── Quote (philosophy) ── */
.quote { text-align: center; }
.quote blockquote { font-family: 'Cinzel', serif; font-size: 1.6rem; line-height: 1.5; color: #E8ECEF; max-width: 44rem; margin: 0 auto; }
.quote cite { display: block; margin-top: 1.5rem; font-style: normal; font-size: 0.85rem; letter-spacing: 0.2em; color: var(--gold); text-transform: uppercase; }

/* ── Final CTA ── */
.cta { text-align: center; background: radial-gradient(60% 100% at 50% 0%, rgba(201,168,76,0.08), transparent 70%); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.cta h2 { font-size: 2.1rem; color: #E8ECEF; margin-bottom: 1rem; }
.cta p { max-width: 34rem; margin: 0 auto 2.25rem; color: var(--slate); }
.cta-badges { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }

/* ── Footer ── */
.footer { padding: 3rem 0; }
.footer-inner { max-width: var(--content); margin: 0 auto; padding: 0 1.5rem; display: flex; flex-direction: column; gap: 1.5rem; align-items: center; text-align: center; }
.footer-brand { font-family: 'Cinzel', serif; font-size: 1.3rem; letter-spacing: 0.2em; color: var(--gold); }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: center; font-size: 0.85rem; }
.footer-links a { color: var(--slate); transition: color 0.3s ease; }
.footer-links a:hover { color: var(--gold); }
.footer-copy { font-size: 0.78rem; color: var(--slate-dim); }

/* ── Responsive ── */
@media (min-width: 720px) {
  .features { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 3.4rem; }
}
@media (min-width: 900px) {
  .nav-links { display: flex; }
  .showcase { grid-template-columns: 1fr 1fr; }
  .showcase .phone { margin: 0; }
}
@media (min-width: 1024px) {
  .features { grid-template-columns: repeat(4, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  .zen-circle { animation: none; }
  html { scroll-behavior: auto; }
}