/* ============================================================
   时光 · Woyou Time — Official Site
   Design tokens from DESIGN.md (Editorial / Tactile Warmth)
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Surfaces */
  --surface: #fbf9f5;
  --surface-dim: #dbdad6;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f5f3ef;
  --surface-container: #efeeea;
  --surface-container-high: #eae8e4;
  --surface-container-highest: #e4e2de;
  --surface-tint: #406656;

  /* Ink */
  --on-surface: #1b1c1a;
  --on-surface-variant: #414844;
  --outline: #717974;
  --outline-variant: #c1c8c3;

  /* Brand */
  --primary: #0f3729;
  --on-primary: #ffffff;
  --primary-container: #284e3f;
  --on-primary-container: #95beab;
  --primary-fixed: #c2ecd7;
  --primary-fixed-dim: #a6d0bc;
  --on-primary-fixed: #002116;
  --inverse-primary: #a6d0bc;

  --secondary: #9b4423;
  --on-secondary: #ffffff;
  --secondary-container: #fd9169;
  --on-secondary-container: #752909;
  --secondary-fixed: #ffdbcf;
  --secondary-fixed-dim: #ffb59b;
  --on-secondary-fixed: #380d00;
  --on-secondary-fixed-variant: #7c2e0e;

  --tertiary: #383021;
  --on-tertiary: #ffffff;
  --tertiary-container: #4f4636;
  --on-tertiary-container: #c2b4a0;
  --tertiary-fixed: #f0e0cb;
  --tertiary-fixed-dim: #d3c4b0;
  --on-tertiary-fixed: #221a0e;

  /* Fonts */
  --font-serif: "Noto Serif SC", "Noto Serif", "Songti SC", serif;
  --font-reading: "Newsreader", "Noto Serif SC", Georgia, serif;
  --font-ui: "Plus Jakarta Sans", "PingFang SC", "Helvetica Neue", sans-serif;

  /* Radius */
  --r-sm: 0.25rem;
  --r-md: 0.5rem;
  --r-lg: 0.75rem;
  --r-xl: 1rem;
  --r-2xl: 1.5rem;
  --r-full: 9999px;

  /* Shadow (soft, ambient — no hard tech shadows) */
  --shadow-soft: 0 10px 30px -10px rgba(31, 36, 33, 0.06), 0 2px 8px -2px rgba(31, 36, 33, 0.03);
  --shadow-card: 0 1px 2px rgba(31, 36, 33, 0.04), 0 6px 18px -8px rgba(31, 36, 33, 0.08);
  --shadow-float: 0 14px 40px -14px rgba(31, 36, 33, 0.18), 0 2px 8px -2px rgba(31, 36, 33, 0.05);

  /* Layout */
  --header-h: 80px;
  --gutter: 1.5rem;
  --gutter-mobile: 1rem;
  --max-w: 72rem; /* 1152px */
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html, body { margin: 0; padding: 0; }
body {
  overscroll-behavior-y: none;
  background: var(--surface);
  color: var(--on-surface);
  font-family: var(--font-reading);
  font-size: 17px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--outline-variant); border-radius: 999px; }
::selection { background: var(--primary-fixed); color: var(--on-primary-fixed); }

/* ---------- Type utilities ---------- */
.ui { font-family: var(--font-ui); }
.serif { font-family: var(--font-serif); }

.eyebrow {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  line-height: 16px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--secondary);
}
.eyebrow--green { color: var(--primary); }
.eyebrow--taupe { color: var(--tertiary-container); }

.h-display {
  font-family: var(--font-serif);
  font-size: clamp(30px, 5.2vw, 44px);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--primary);
}
.h-xl {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3.4vw, 30px);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--primary);
}
.h-md {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  line-height: 30px;
  color: var(--primary);
}
.h-sm {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  line-height: 26px;
  color: var(--on-surface);
}
.label-lg {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  line-height: 20px;
  letter-spacing: 0.02em;
}
.label-md {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  line-height: 18px;
  letter-spacing: 0.03em;
}
.label-sm {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  line-height: 16px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.body-lg {
  font-family: var(--font-reading);
  font-size: 19px;
  line-height: 32px;
  color: var(--on-surface-variant);
}
.body-md {
  font-family: var(--font-reading);
  font-size: 17px;
  line-height: 28px;
  color: var(--on-surface-variant);
}
.body-sm {
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 22px;
  color: var(--on-surface-variant);
}
.xs {
  font-family: var(--font-ui);
  font-size: 12px;
  line-height: 18px;
  color: var(--on-surface-variant);
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--gutter-mobile);
  padding-right: var(--gutter-mobile);
}
@media (min-width: 768px) {
  .container { padding-left: var(--gutter); padding-right: var(--gutter); }
}
.section { padding: 5rem 0; }
@media (min-width: 768px) { .section { padding: 6.5rem 0; } }
main { padding-top: var(--header-h); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(251, 249, 245, 0.9);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.03);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: 0 1px 2px rgba(31,36,33,0.05), 0 8px 24px -12px rgba(31,36,33,0.12); }
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand { display: flex; align-items: center; gap: 0.75rem; }
.brand-avatar {
  width: 34px; height: 34px;
  border-radius: var(--r-full);
  object-fit: cover;
  box-shadow: 0 1px 4px rgba(31,36,33,0.15);
}
.brand-text { display: flex; flex-direction: column; }
.brand-name {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--primary);
  line-height: 1.2;
  transition: color 0.2s ease;
}
.brand:hover .brand-name { color: var(--primary-container); }
.brand-sub {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}
.main-nav { display: none; align-items: center; gap: 2rem; }
@media (min-width: 1024px) { .main-nav { display: flex; } }
.main-nav a {
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--on-surface-variant);
  padding: 0.375rem 0;
  position: relative;
  transition: color 0.2s ease;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--secondary);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}
.main-nav a:hover { color: var(--on-surface); }
.main-nav a.active { color: var(--primary); font-weight: 600; }
.main-nav a.active::after { transform: scaleX(1); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1;
  border: none;
  border-radius: var(--r-lg);
  padding: 0.875rem 1.75rem;
  transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
  white-space: nowrap;
}
.btn:active { transform: scale(0.99); }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-container); }
.btn-paper {
  background: var(--surface-container-lowest);
  color: var(--tertiary);
  border: 1px solid var(--surface-container-highest);
  box-shadow: var(--shadow-card);
}
.btn-paper:hover { background: var(--surface-container-high); }
.btn-ghost {
  background: transparent;
  color: var(--on-surface-variant);
  padding: 0.75rem 1rem;
}
.btn-ghost:hover { color: var(--primary); }
.btn-sm { padding: 0.5rem 1rem; font-size: 13px; border-radius: var(--r-md); }
.btn-block { width: 100%; justify-content: space-between; }

/* Inline SVG icons (sprite, no icon-font dependency) */
.i {
  display: inline-block;
  vertical-align: middle;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.i-sm { width: 15px; height: 15px; }
.i-md { width: 20px; height: 20px; }
.i-lg { width: 24px; height: 24px; stroke-width: 1.8; }

/* Mobile menu */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--r-md);
  border: 1px solid var(--surface-container-highest);
  background: var(--surface-container-lowest);
  color: var(--on-surface);
}
@media (min-width: 1024px) { .nav-toggle { display: none; } }
.mobile-panel {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  z-index: 99;
  background: var(--surface);
  border-bottom: 1px solid var(--surface-container-highest);
  box-shadow: 0 20px 40px -20px rgba(31,36,33,0.2);
  padding: 1rem var(--gutter-mobile) 1.5rem;
  display: none;
}
.mobile-panel.open { display: block; }
.mobile-panel nav { display: flex; flex-direction: column; }
.mobile-panel a {
  font-family: var(--font-ui);
  font-size: 16px;
  font-weight: 500;
  padding: 0.875rem 0.25rem;
  color: var(--on-surface);
  border-bottom: 1px solid var(--surface-container);
}
.mobile-panel a:last-of-type { border-bottom: none; }
.mobile-panel .btn { margin-top: 1rem; width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 3.5rem 0 5rem;
}
@media (min-width: 768px) { .hero { padding: 5rem 0 6rem; } }
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}
.hero-glow--pine {
  width: 380px; height: 380px;
  background: rgba(194, 236, 215, 0.55);
  top: -120px;
  left: 60%;
}
.hero-glow--amber {
  width: 320px; height: 320px;
  background: rgba(255, 219, 207, 0.6);
  top: 45%;
  left: -140px;
}
.hero-inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; text-align: center; max-width: 780px; margin: 0 auto; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  border-radius: var(--r-full);
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  box-shadow: 0 1px 3px rgba(31,36,33,0.05);
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--secondary); }
.hero h1 {
  margin: 1.25rem 0 0;
  font-family: var(--font-serif);
  font-size: clamp(32px, 6vw, 52px);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--primary);
  text-wrap: balance;
}
.hero-sub {
  margin: 1rem auto 0;
  max-width: 620px;
  font-family: var(--font-reading);
  font-size: clamp(17px, 2.2vw, 19px);
  line-height: 32px;
  color: var(--on-surface-variant);
  text-wrap: balance;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}
.apple-logo { width: 18px; height: 18px; fill: currentColor; }

/* ---------- App preview mockup ---------- */
.preview-wrap {
  position: relative;
  max-width: 960px;
  margin: 4rem auto 0;
}
.float-badge {
  display: none;
  position: absolute;
  z-index: 2;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--r-full);
  background: rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-float);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--on-surface);
}
@media (min-width: 1024px) { .float-badge { display: inline-flex; } }
.float-badge--1 { top: -22px; left: -18px; animation: floaty 5s ease-in-out infinite; }
.float-badge--2 { top: 32%; right: -26px; animation: floaty 6s ease-in-out 0.8s infinite; }
.float-badge--3 { bottom: -18px; left: 22%; animation: floaty 5.5s ease-in-out 1.6s infinite; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}
.preview-frame {
  background: var(--surface-container-lowest);
  border-radius: var(--r-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-float);
  border: 1px solid rgba(0,0,0,0.04);
}
.preview-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--surface-container-low);
  padding: 0.875rem 1.5rem;
}
.preview-dots { display: flex; align-items: center; gap: 0.5rem; }
.preview-dots i {
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--outline-variant);
  opacity: 0.6;
}
.preview-dots span {
  margin-left: 0.75rem;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  color: var(--on-surface-variant);
  letter-spacing: 0.03em;
}
.preview-bar-right { display: flex; align-items: center; gap: 0.75rem; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--r-full);
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.preview-body {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 460px;
}
@media (min-width: 768px) {
  .preview-body { grid-template-columns: 7fr 5fr; }
}
.preview-left {
  background: var(--surface-container-lowest);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
}
@media (min-width: 768px) { .preview-left { padding: 2rem; } }
.preview-right {
  background: var(--surface-container-low);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
@media (min-width: 768px) { .preview-right { padding: 2rem; } }
.pv-rubric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--surface-container-high);
}
.pv-title {
  margin: 0.75rem 0 0.75rem;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  line-height: 30px;
  color: var(--on-surface);
}
.pv-para {
  margin: 0;
  font-family: var(--font-reading);
  font-size: 16px;
  line-height: 1.85;
  color: var(--on-surface);
}
.pv-para mark {
  background: rgba(255, 219, 207, 0.75);
  color: var(--on-secondary-fixed);
  padding: 0.05em 0.25em;
  border-radius: 0.2rem;
  cursor: pointer;
  transition: background 0.2s ease;
}
.pv-para mark:hover { background: var(--secondary-container); }
.vocab-pop {
  margin-top: 1rem;
  padding: 0.875rem;
  border-radius: var(--r-xl);
  background: var(--surface-container-low);
  box-shadow: 0 1px 3px rgba(31,36,33,0.05);
}
.vocab-head { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.vocab-word {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--primary);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.vocab-word small {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--outline);
  letter-spacing: 0.02em;
}
.tag-green {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  border-radius: var(--r-full);
  background: var(--primary-fixed);
  color: var(--on-primary-fixed);
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.vocab-def { margin: 0.375rem 0 0; font-size: 12px; line-height: 18px; color: var(--on-surface-variant); }
.pv-audio {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--surface-container-high);
}
.play-btn {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--primary);
  color: var(--on-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(15,55,41,0.25);
  transition: opacity 0.2s ease, transform 0.15s ease;
}
.play-btn:hover { opacity: 0.9; }
.play-btn:active { transform: scale(0.96); }
.pv-audio-meta { flex: 1; min-width: 0; }
.pv-audio-times {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--on-surface-variant);
  margin-bottom: 0.375rem;
}
.pv-track {
  height: 6px;
  border-radius: 999px;
  background: var(--surface-container-high);
  overflow: hidden;
}
.pv-track i {
  display: block;
  width: 40%;
  height: 100%;
  border-radius: 999px;
  background: var(--primary);
}
.speed-chip {
  padding: 0.25rem 0.5rem;
  border-radius: var(--r-md);
  background: var(--surface-container);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  color: var(--on-surface);
}

.pr-head { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.pr-title {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
}
.pr-title .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--primary); }
.pr-step { font-family: var(--font-ui); font-size: 11px; color: var(--outline); }
.pr-card {
  background: var(--surface-container-lowest);
  border-radius: var(--r-xl);
  box-shadow: 0 1px 3px rgba(31,36,33,0.06);
  padding: 1rem;
}
.pr-card .rubric {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--outline);
}
.pr-quote {
  margin: 0.5rem 0 0.25rem;
  font-family: var(--font-reading);
  font-style: italic;
  font-size: 16px;
  line-height: 1.7;
  color: var(--tertiary);
}
.pr-trans { margin: 0; font-size: 12px; line-height: 18px; color: var(--on-surface-variant); padding-top: 0.25rem; }
.wf-card { padding: 1rem; }
.wf-head { display: flex; align-items: center; justify-content: space-between; font-family: var(--font-ui); font-size: 11px; color: var(--on-surface-variant); margin-bottom: 0.625rem; }
.wf-head b { color: var(--primary); font-weight: 600; }
.waveform { width: 100%; height: 40px; color: var(--primary); display: block; }
.wf-foot {
  display: flex;
  justify-content: space-between;
  padding-top: 0.5rem;
  font-family: var(--font-ui);
  font-size: 10px;
  color: var(--outline);
}
.mic-btn {
  margin-top: auto;
  width: 100%;
  border: none;
  border-radius: var(--r-xl);
  background: var(--secondary);
  color: var(--on-secondary);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.875rem 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 14px -4px rgba(155,68,35,0.4);
  transition: background 0.2s ease, transform 0.15s ease;
}
.mic-btn:hover { background: var(--on-secondary-fixed-variant); }
.mic-btn:active { transform: scale(0.99); }

/* ---------- Section headers ---------- */
.sec-head { max-width: 640px; margin-bottom: 3rem; }
.sec-head h2 { margin: 0.5rem 0 0; }
.sec-head p { margin: 0.75rem 0 0; font-family: var(--font-reading); font-size: 17px; line-height: 28px; color: var(--on-surface-variant); }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- Products ---------- */
.products { background: var(--surface-container-low); }
.products-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 1024px) { .products-grid { grid-template-columns: 1fr 1fr; } }
.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface-container-lowest);
  border: 1px solid var(--surface-container-high);
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  overflow: hidden;
}
.product-card:hover { box-shadow: var(--shadow-float); transform: translateY(-2px); }
.pc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; }
.pc-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--r-full);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.pc-chip--green { background: var(--primary-fixed); color: var(--on-primary-fixed); }
.pc-chip--amber { background: var(--secondary-fixed); color: var(--on-secondary-fixed); }
.pc-no {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 18px;
  color: var(--outline);
}
.pc-name {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  line-height: 38px;
  letter-spacing: -0.01em;
  color: var(--primary);
}
.pc-desc { margin: 0.75rem 0 0; font-family: var(--font-reading); font-size: 16px; line-height: 27px; color: var(--on-surface-variant); }
.pc-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--surface-container);
}
@media (min-width: 560px) { .pc-features { grid-template-columns: 1fr 1fr; } }
.pc-feat {
  padding: 0.875rem;
  border-radius: var(--r-xl);
  background: var(--surface-container);
  transition: background 0.2s ease;
}
.pc-feat:hover { background: var(--surface-container-high); }
.pc-feat h4 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--primary);
}
.product-card--amber .pc-feat h4 { color: var(--secondary); }
.pc-feat p { margin: 0.375rem 0 0; font-size: 12px; line-height: 18px; color: var(--on-surface-variant); }
.pc-store {
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: var(--r-xl);
  background: var(--surface-container-high);
  display: flex;
  align-items: center;
  gap: 1rem;
}
.pc-store img {
  width: 56px; height: 56px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(31,36,33,0.18);
  flex-shrink: 0;
}
.pc-store .k {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--secondary);
}
.pc-store .t { margin: 0.125rem 0 0; font-family: var(--font-serif); font-size: 16px; font-weight: 500; color: var(--on-surface); line-height: 22px; }
.pc-store .m { font-family: var(--font-ui); font-size: 11px; color: var(--on-surface-variant); margin-top: 0.125rem; }
.pc-action { margin-top: 1.5rem; }
.pc-action .btn-plain {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem;
  border-radius: var(--r-xl);
  background: var(--surface-container);
  color: var(--primary);
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background 0.2s ease, color 0.2s ease;
}
.pc-action .btn-plain:hover { background: var(--primary); color: var(--on-primary); }
.product-card--amber .pc-action .btn-plain { color: var(--secondary); background: var(--surface-container); }
.product-card--amber .pc-action .btn-plain:hover { background: var(--secondary); color: var(--on-secondary); }

/* ---------- Experience ---------- */
.experience { background: var(--surface); border-top: 1px solid var(--surface-container-high); border-bottom: 1px solid var(--surface-container-high); position: relative; overflow: hidden; }
.exp-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  border-radius: var(--r-full);
  background: var(--surface-container-high);
  color: var(--primary);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 0.875rem;
}
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}
@media (min-width: 640px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .feature-grid { grid-template-columns: repeat(4, 1fr); } }
.feature-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--surface-container-lowest);
  border: 1px solid var(--surface-container-high);
  border-radius: 1.25rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.feature-card:hover { box-shadow: var(--shadow-float); transform: translateY(-2px); }
.fc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.fc-date {
  padding: 0.375rem 0.625rem;
  border-radius: var(--r-sm);
  background: rgba(255, 219, 207, 0.45);
  color: var(--on-secondary-fixed);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.fc-tag { font-family: var(--font-ui); font-size: 11px; color: var(--outline); }
.fc-icon {
  width: 36px; height: 36px;
  border-radius: var(--r-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.fc-icon--green { background: var(--primary-fixed); color: var(--primary); }
.fc-icon--amber { background: var(--secondary-fixed); color: var(--secondary); }
.fc-icon--taupe { background: var(--tertiary-fixed); color: var(--tertiary); }
.fc-quote {
  margin: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 16px;
  line-height: 24px;
  color: var(--primary);
}
.fc-name { margin: 0; font-family: var(--font-serif); font-size: 18px; font-weight: 500; color: var(--primary); }
.fc-en { margin: 0.125rem 0 0.625rem; font-family: var(--font-ui); font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--secondary); }
.fc-text { margin: 0; font-size: 12px; line-height: 19px; color: var(--on-surface-variant); }
.fc-foot {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--surface-container-high);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  color: var(--secondary);
}
.fc-foot .left { display: inline-flex; align-items: center; gap: 0.25rem; }
.fc-foot--muted { color: var(--outline); }

/* Library panel */
.library {
  background: var(--surface-container-lowest);
  border: 1px solid var(--surface-container-high);
  border-radius: 1.25rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}
@media (min-width: 768px) { .library { padding: 2rem; } }
.library-head {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--surface-container-high);
}
@media (min-width: 768px) {
  .library-head { flex-direction: row; align-items: center; justify-content: space-between; }
}
.library-head h3 {
  margin: 0.25rem 0 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--primary);
}
.library-head p { margin: 0.375rem 0 0; font-size: 12px; color: var(--on-surface-variant); }
.filter-pills { display: flex; gap: 0.5rem; overflow-x: auto; padding-bottom: 0.25rem; scrollbar-width: none; }
.filter-pills::-webkit-scrollbar { display: none; }
.pill {
  padding: 0.375rem 0.875rem;
  border-radius: var(--r-full);
  background: var(--surface-container-high);
  color: var(--on-surface);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.2s ease;
  cursor: pointer;
  border: none;
}
.pill:hover { background: var(--surface-container); }
.pill.active { background: var(--primary); color: var(--on-primary); }
.feed-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  padding-top: 1.5rem;
}
@media (min-width: 768px) { .feed-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .feed-grid { grid-template-columns: repeat(3, 1fr); } }
.feed-item {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--r-xl);
  background: var(--surface-container-low);
  transition: background 0.2s ease;
  cursor: pointer;
}
.feed-item:hover { background: var(--surface-container); }
.feed-thumb {
  position: relative;
  width: 80px; height: 80px;
  border-radius: var(--r-lg);
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 1px 4px rgba(31,36,33,0.12);
}
.feed-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.feed-item:hover .feed-thumb img { transform: scale(1.06); }
.feed-thumb .dur {
  position: absolute;
  right: 4px; bottom: 4px;
  padding: 0.0625rem 0.3125rem;
  border-radius: var(--r-sm);
  background: rgba(251,249,245,0.92);
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  color: var(--primary);
}
.feed-body { flex: 1; min-width: 0; display: flex; flex-direction: column; justify-content: space-between; gap: 0.5rem; }
.feed-tags { display: flex; align-items: center; gap: 0.375rem; flex-wrap: wrap; }
.feed-tag {
  padding: 0.125rem 0.4375rem;
  border-radius: var(--r-sm);
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.feed-tag--green { background: var(--primary-fixed); color: var(--on-primary-fixed); }
.feed-tag--amber { background: var(--secondary-fixed); color: var(--on-secondary-fixed); }
.feed-tag--taupe { background: var(--tertiary-fixed); color: var(--tertiary); }
.feed-meta { font-family: var(--font-ui); font-size: 11px; color: var(--outline); }
.feed-title {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 14px;
  font-weight: 600;
  line-height: 20px;
  color: var(--on-surface);
  transition: color 0.2s ease;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.feed-item:hover .feed-title { color: var(--primary); }
.feed-sub { margin: 0.25rem 0 0; font-size: 12px; color: var(--on-surface-variant); display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.feed-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--outline);
  padding-top: 0.25rem;
}

/* ---------- Philosophy ---------- */
.philosophy { background: var(--surface); }
.philo-statement { text-align: center; max-width: 820px; margin: 0 auto 4rem; display: flex; flex-direction: column; align-items: center; gap: 1rem; }
.philo-quote {
  margin: 0;
  font-family: var(--font-reading);
  font-size: clamp(21px, 3.4vw, 34px);
  font-weight: 400;
  line-height: 1.45;
  color: var(--primary);
  text-wrap: balance;
}
.philo-sub { margin: 0; max-width: 560px; font-family: var(--font-reading); font-size: 17px; line-height: 28px; color: var(--on-surface-variant); }
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 4rem;
}
@media (min-width: 640px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step {
  background: var(--surface-container-lowest);
  border: 1px solid var(--surface-container-high);
  border-radius: 1.25rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}
.step-no {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 14px;
  margin-bottom: 1rem;
  background: var(--surface-container-high);
  color: var(--on-surface);
}
.step:nth-child(1) .step-no { background: var(--primary-fixed); color: var(--on-primary-fixed); }
.step:nth-child(4) .step-no { background: var(--secondary-fixed); color: var(--on-secondary-fixed); }
.step h4 { margin: 0; font-family: var(--font-serif); font-size: 18px; font-weight: 500; color: var(--primary); }
.step .en { margin: 0.25rem 0 0.75rem; font-family: var(--font-ui); font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--outline); }
.step:nth-child(1) .en, .step:nth-child(4) .en { color: var(--secondary); }
.step p { margin: 0; font-size: 13px; line-height: 21px; color: var(--on-surface-variant); }

.paths-panel {
  background: var(--surface-container-low);
  border-radius: 1.5rem;
  padding: 2rem;
}
@media (min-width: 768px) { .paths-panel { padding: 2.5rem; } }
.paths-head {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--surface-container-high);
}
@media (min-width: 1024px) { .paths-head { flex-direction: row; align-items: center; justify-content: space-between; } }
.paths-head h3 { margin: 0.25rem 0 0; font-family: var(--font-serif); font-size: 22px; font-weight: 500; color: var(--primary); }
.paths-links { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--on-surface-variant);
  transition: color 0.2s ease;
}
.text-link:hover { color: var(--primary); }
.text-link--amber { color: var(--secondary); }
.text-link--amber:hover { color: var(--on-secondary-fixed-variant); }
.paths-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding-top: 2rem;
}
@media (min-width: 768px) { .paths-grid { grid-template-columns: repeat(3, 1fr); } }
.path-card {
  background: var(--surface-container-lowest);
  border-radius: var(--r-xl);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: 0 1px 3px rgba(31,36,33,0.05);
}
.path-card .head { display: flex; align-items: center; gap: 0.5rem; }
.path-card h5 { margin: 0; font-family: var(--font-serif); font-size: 18px; font-weight: 500; color: var(--on-surface); }
.path-card p { margin: 0; font-size: 13px; line-height: 21px; color: var(--on-surface-variant); }

/* ---------- Download ---------- */
.download { background: var(--surface-container-lowest); position: relative; overflow: hidden; }
.download-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 1024px) {
  .download-grid { grid-template-columns: 6fr 6fr; gap: 4rem; }
  .download-copy { padding-left: 1.5rem; }
}
.phones {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  align-items: flex-end;
}
.phone {
  width: min(240px, 52vw);
  border-radius: 2.25rem;
  border: 8px solid #1f2421;
  background: #1f2421;
  overflow: hidden;
  box-shadow: 0 24px 60px -24px rgba(31,36,33,0.45);
  position: relative;
}
.phone::before {
  content: "";
  position: absolute;
  top: 10px; left: 50%;
  transform: translateX(-50%);
  width: 84px; height: 20px;
  border-radius: 999px;
  background: #1f2421;
  z-index: 2;
}
.phone img { width: 100%; height: auto; display: block; border-radius: 1.5rem; }
.phone--offset { margin-top: 2.5rem; }
.device-note {
  width: 100%;
  margin-top: 1.75rem;
  padding: 1.25rem 1.5rem;
  border-radius: 1.25rem;
  background: var(--primary);
  color: var(--on-primary);
}
.device-note .k { font-family: var(--font-ui); font-size: 10px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--primary-fixed); }
.device-note .t { margin: 0.375rem 0 0.25rem; font-family: var(--font-serif); font-size: 18px; font-weight: 500; }
.device-note p { margin: 0; font-size: 12px; line-height: 18px; color: var(--on-primary-container); }

.download-copy h2 { margin: 0.5rem 0 0; }
.download-copy > p { margin: 1rem 0 0; font-family: var(--font-reading); font-size: 17px; line-height: 28px; color: var(--on-surface-variant); max-width: 460px; }
.dl-cards { display: flex; flex-direction: column; gap: 1.25rem; margin-top: 2rem; }
.dl-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1.5rem;
  border-radius: 1.25rem;
  background: var(--surface-container-low);
  border: 1px solid var(--surface-container);
}
@media (min-width: 640px) { .dl-card { flex-direction: row; align-items: center; } }
.dl-qr {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: var(--surface-container-lowest);
  border-radius: var(--r-xl);
  box-shadow: 0 1px 4px rgba(31,36,33,0.07);
}
.dl-qr img { width: 96px; height: 96px; border-radius: var(--r-sm); }
.dl-qr span { font-family: var(--font-ui); font-size: 10px; color: var(--outline); letter-spacing: 0.04em; }
.dl-main { flex: 1; min-width: 0; }
.dl-main .row { display: flex; align-items: center; gap: 0.875rem; }
.dl-main img.icon { width: 52px; height: 52px; border-radius: 13px; object-fit: cover; box-shadow: 0 2px 8px rgba(31,36,33,0.18); flex-shrink: 0; }
.dl-main h3 { margin: 0; font-family: var(--font-serif); font-size: 20px; font-weight: 600; color: var(--primary); }
.dl-main .meta { margin: 0.125rem 0 0; font-family: var(--font-ui); font-size: 12px; color: var(--on-surface-variant); }
.dl-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.875rem; margin-top: 1rem; }
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--r-lg);
  background: var(--primary);
  color: var(--on-primary);
  box-shadow: 0 4px 14px -6px rgba(15,55,41,0.5);
  transition: background 0.2s ease, transform 0.15s ease;
}
.store-badge:hover { background: var(--primary-container); transform: translateY(-1px); }
.store-badge .apple-logo { width: 22px; height: 22px; }
.store-badge .k { font-family: var(--font-ui); font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--primary-fixed); line-height: 1.1; }
.store-badge .t { font-family: var(--font-ui); font-size: 15px; font-weight: 600; line-height: 1.2; }
.dl-note { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-ui); font-size: 11px; color: var(--on-surface-variant); }
.dl-note .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--secondary); }
.feedback {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--r-xl);
  background: var(--surface-container);
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.feedback .material-symbols-outlined { color: var(--secondary); flex-shrink: 0; }
.feedback p { margin: 0; font-family: var(--font-reading); font-style: italic; font-size: 14px; line-height: 22px; color: var(--on-surface); }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface-container-low); box-shadow: 0 -1px 6px rgba(0,0,0,0.02); }
.footer-inner { padding: 3.5rem 0 2rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding-bottom: 2.5rem;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 5fr 2fr 2fr 3fr; gap: 2rem; }
}
.footer-brand .name { font-family: var(--font-serif); font-size: 18px; font-weight: 600; letter-spacing: 0.02em; color: var(--primary); }
.footer-brand p { margin: 0.75rem 0 0; max-width: 300px; font-size: 14px; line-height: 22px; color: var(--on-surface-variant); }
.footer-brand .tagline { display: flex; align-items: center; gap: 0.5rem; margin-top: 1rem; font-family: var(--font-ui); font-size: 11px; letter-spacing: 0.05em; color: var(--on-surface-variant); }
.footer-brand .tagline .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--secondary); }
.footer-col h4 {
  margin: 0 0 1rem;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tertiary);
}
.footer-col nav { display: flex; flex-direction: column; gap: 0.625rem; }
.footer-col a {
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--on-surface-variant);
  transition: color 0.2s ease;
  width: fit-content;
}
.footer-col a:hover { color: var(--on-surface); }
.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--surface-container-high);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--on-surface-variant);
}
@media (min-width: 768px) { .footer-bottom { flex-direction: row; } }
.footer-bottom .left { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; }

/* ---------- Reveal animation (JS-gated: content stays visible without JS) ---------- */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-badge--1, .float-badge--2, .float-badge--3 { animation: none; }
}