/* ─────────────────────────────────────────────────────────────
   Landing — the storefront.
   ───────────────────────────────────────────────────────────── */

/* Top toolbar — glass pill, always centered */
.nav {
  position: fixed; top: 20px; left: 50%;
  transform: translate3d(-50%, 0, 0);
  z-index: var(--z-nav);
  display: flex; align-items: center;
  gap: 4px;
  padding: 8px;
  border-radius: var(--r-pill);
  background: var(--glass-bg-hi);
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--sh-2), 0 0 0 1px #ffffff05 inset;
  transition: transform var(--d-base) var(--ease-spring), box-shadow var(--d-base);
}
.nav.scrolled { box-shadow: var(--sh-3); }
.nav__item {
  padding: 10px 18px;
  border-radius: var(--r-pill);
  font-size: var(--text-sm);
  font-weight: 540;
  color: var(--fg-muted);
  letter-spacing: -0.01em;
  transition: color var(--d-base), background var(--d-base);
  position: relative;
}
.nav__item:hover { color: var(--fg-strong); background: var(--ink-hair); }
.nav__item.active { color: var(--fg-strong); }
.nav__item.active::after {
  content: ""; position: absolute; left: 50%; bottom: 4px;
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--flame-500);
  transform: translate(-50%, 0);
}
.nav__divider { width: 1px; height: 20px; background: var(--ink-hair-strong); margin: 0 6px; }
.nav__cta {
  padding: 10px 20px;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, var(--flame-400), var(--flame-600));
  color: #111;
  font-weight: 620;
  font-size: var(--text-sm);
  transition: transform var(--d-fast) var(--ease-spring), box-shadow var(--d-base);
}
.nav__cta:hover { transform: translateY(-1px); box-shadow: var(--sh-glow); }

@media (max-width: 720px) {
  .nav { top: 12px; gap: 0; padding: 6px; }
  .nav__item { padding: 8px 12px; font-size: var(--text-xs); }
  .nav__item.compact-hide { display: none; }
}

/* Hero ──────────────────────────────────────────────────────── */
.hero {
  min-height: 100dvh;
  padding: 140px 0 80px;
  display: grid;
  place-items: center;
  position: relative;
}
.hero__kicker {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 14px 8px 10px;
  border-radius: var(--r-pill);
  background: var(--ink-hair);
  border: 1px solid var(--ink-hair-strong);
  font-size: var(--text-xs); color: var(--fg-muted);
  margin-bottom: 28px;
}
.hero h1 {
  max-width: 16ch;
  text-align: center;
  background: linear-gradient(180deg, #fff 0%, #ffffffc8 60%, #ff9d4480 120%);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}
.hero__accent { color: var(--flame-400); -webkit-text-fill-color: var(--flame-400); }
.hero__lede {
  max-width: 58ch; margin: 24px auto 0;
  text-align: center;
  font-size: var(--text-md);
  color: var(--fg-muted);
  line-height: 1.6;
}
.hero__cta { display: flex; gap: 12px; margin-top: 40px; justify-content: center; flex-wrap: wrap; }
.hero__proof {
  margin-top: 48px;
  display: flex; gap: 18px; justify-content: center;
  flex-wrap: wrap;
  color: var(--fg-faint);
  font-size: var(--text-xs);
}
.hero__proof span { display: inline-flex; align-items: center; gap: 6px; }
.hero__proof .bead { width: 6px; height: 6px; box-shadow: 0 0 8px var(--flame-500); }

/* Spotlight canvas behind hero — parallax aurora */
.hero__aurora {
  position: absolute; inset: -20% -10% 0 -10%;
  z-index: -1;
  background:
    radial-gradient(50% 40% at 20% 30%, #ff7a0033, transparent 60%),
    radial-gradient(40% 35% at 80% 20%, #6b2bff26, transparent 60%),
    radial-gradient(60% 40% at 50% 80%, #ff7a001a, transparent 70%);
  filter: blur(24px);
  animation: auroraDrift 20s ease-in-out infinite alternate;
  will-change: transform;
}
@keyframes auroraDrift {
  0%   { transform: translate3d(-2%, 0, 0) scale(1); }
  100% { transform: translate3d(2%, 2%, 0) scale(1.05); }
}

/* Feature section ───────────────────────────────────────────── */
.section-head { text-align: center; margin-bottom: 64px; }
.section-head h2 {
  background: linear-gradient(180deg, #fff, #ffffffb0);
  -webkit-background-clip: text;
          background-clip: text;
  color: transparent;
}
.section-head p { color: var(--fg-muted); margin-top: 16px; font-size: var(--text-md); max-width: 56ch; margin-inline: auto; }

/* Bento grid — uneven rhythm, gestalt */
.bento {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.bento > * {
  border-radius: var(--r-xl);
  padding: 28px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
  transition: transform var(--d-base) var(--ease-spring), border-color var(--d-base);
}
.bento > *:hover { transform: translateY(-4px); border-color: var(--glass-edge); }
.bento h3 { font-size: var(--text-lg); margin-bottom: 8px; }
.bento p  { color: var(--fg-muted); font-size: var(--text-sm); line-height: 1.55; }
.bento .tag {
  display: inline-block;
  font-size: 11px; color: var(--flame-300);
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 12px; font-weight: 560;
}

.b-1 { grid-column: span 4; grid-row: span 2; min-height: 380px; }
.b-2 { grid-column: span 2; min-height: 180px; }
.b-3 { grid-column: span 2; min-height: 180px; }
.b-4 { grid-column: span 3; }
.b-5 { grid-column: span 3; }
.b-6 { grid-column: span 2; }
.b-7 { grid-column: span 4; }

@media (max-width: 900px) {
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento > * { grid-column: span 2 !important; grid-row: auto !important; min-height: auto; }
}

/* Visual stack mockup (in b-1) */
.mock-table {
  margin-top: 20px;
  border-radius: var(--r-md);
  background: var(--ink-1);
  border: 1px solid var(--ink-hair-strong);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  box-shadow: var(--sh-2);
}
.mock-row { display: grid; grid-template-columns: 32px 1.6fr 1fr 0.8fr 0.8fr; align-items: center; padding: 10px 14px; border-bottom: 1px solid var(--ink-hair); transition: background var(--d-base); }
.mock-row:last-child { border-bottom: none; }
.mock-row:hover { background: var(--ink-hair); }
.mock-row.is-head { color: var(--fg-faint); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; }
.mock-badge { display: inline-flex; padding: 3px 8px; border-radius: var(--r-pill); font-size: 10px; font-weight: 600; border: 1px solid; }
.mock-badge.done    { color: var(--ok);    border-color: #4ade8055; background: #4ade8015; }
.mock-badge.doing   { color: var(--flame-300); border-color: var(--flame-glow); background: var(--flame-glow-soft); }
.mock-badge.paused  { color: var(--fg-muted); border-color: var(--ink-hair-strong); background: var(--ink-3); }

/* AI engine diagram (in b-2 area) */
.engine {
  display: flex; align-items: center; gap: 14px;
  margin-top: 16px;
}
.engine__chip {
  padding: 8px 12px;
  border-radius: var(--r-md);
  border: 1px solid var(--ink-hair-strong);
  background: var(--ink-2);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  display: flex; align-items: center; gap: 6px;
}
.engine__chip .bead { width: 6px; height: 6px; }
.engine__chip.alt .bead { background: #6b2bff; box-shadow: 0 0 8px #6b2bff; }
.engine__arrow { flex: 1; height: 1px; background: linear-gradient(90deg, var(--flame-500), transparent); }

/* Pricing ──────────────────────────────────────────────────── */
.pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.price-card {
  padding: 36px 32px;
  border-radius: var(--r-xl);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  position: relative;
  transition: transform var(--d-base) var(--ease-spring), border-color var(--d-base);
}
.price-card:hover { transform: translateY(-4px); }
.price-card.featured {
  border-color: var(--flame-glow);
  background: linear-gradient(180deg, var(--flame-glow-soft), transparent 50%), var(--glass-bg);
  box-shadow: var(--sh-glow-soft);
}
.price-card.featured::before {
  content: "最熱門";
  position: absolute; top: -12px; left: 50%;
  transform: translateX(-50%);
  padding: 4px 12px;
  font-size: var(--text-xs); font-weight: 600;
  background: var(--flame-500); color: #111;
  border-radius: var(--r-pill);
}
.price-card h3 { font-size: var(--text-lg); }
.price-amount { display: flex; align-items: baseline; gap: 4px; margin: 16px 0 4px; }
.price-amount strong { font-size: 48px; font-family: var(--font-display); font-weight: 680; color: var(--fg-strong); letter-spacing: -0.03em; }
.price-amount span { color: var(--fg-muted); font-size: var(--text-sm); }
.price-list { list-style: none; padding: 0; margin: 24px 0; display: flex; flex-direction: column; gap: 10px; }
.price-list li { color: var(--fg-muted); font-size: var(--text-sm); display: flex; gap: 8px; }
.price-list li::before { content: "✓"; color: var(--flame-400); font-weight: 700; }

@media (max-width: 900px) { .pricing { grid-template-columns: 1fr; } }

/* Creature showcase ────────────────────────────────────────── */
.creature-showcase {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}
.creature-showcase .stage {
  aspect-ratio: 1;
  border-radius: var(--r-2xl);
  background:
    radial-gradient(50% 50% at 50% 50%, var(--flame-glow-soft), transparent 70%),
    var(--glass-bg);
  border: 1px solid var(--glass-border);
  display: grid; place-items: center;
  position: relative;
  overflow: hidden;
}
.creature-showcase .stage::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 30%, #ffffff0a, transparent 40%);
}
@media (max-width: 900px) { .creature-showcase { grid-template-columns: 1fr; } }

/* FAQ ──────────────────────────────────────────────────────── */
.faq { max-width: 760px; margin-inline: auto; }
.faq-item {
  border-bottom: 1px solid var(--ink-hair);
  padding: 20px 0;
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
  font-size: var(--text-md); font-weight: 560;
  color: var(--fg-strong);
  padding: 4px 0;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; font-size: 24px; color: var(--fg-muted);
  transition: transform var(--d-base) var(--ease-spring);
}
.faq-item[open] summary::after { transform: rotate(45deg); color: var(--flame-400); }
.faq-item p { color: var(--fg-muted); margin-top: 12px; line-height: 1.65; font-size: var(--text-sm); }

/* Footer ───────────────────────────────────────────────────── */
.footer {
  padding: 80px 0 40px;
  border-top: 1px solid var(--ink-hair);
  margin-top: 40px;
  text-align: center;
  color: var(--fg-faint);
  font-size: var(--text-xs);
}
.footer__mark {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-weight: 700;
  color: var(--fg-muted); font-size: var(--text-sm);
  margin-bottom: 16px;
}
.footer__links { display: flex; gap: 24px; justify-content: center; margin: 16px 0 32px; }
.footer__links a { color: var(--fg-muted); font-size: var(--text-xs); transition: color var(--d-base); }
.footer__links a:hover { color: var(--fg-strong); }