:root {
  --paper: #f6f3ee;
  --paper-deep: #efe8dd;
  --ivory: #fdfcf9;
  --ink: #1a1916;
  --ink-2: #696359;
  --ink-3: #a19a91;
  --hair: rgba(26, 25, 22, 0.08);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.01em;
}

html[lang="en"] .zh,
html:not([lang="en"]) .en { display: none; }
html[lang="en"] { font-feature-settings: "kern" 1; }
html[lang="en"] h1,
html[lang="en"] h2,
html[lang="en"] h3,
html[lang="en"] .quote {
  word-spacing: 0.06em;
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 18px 40px;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--hair);
}

.wordmark {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav nav {
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: var(--ink-2);
}

.nav-end { margin-left: auto; display: flex; align-items: center; gap: 16px; }

.lang {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-2);
}

.nav-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--ivory);
  font-size: 14px;
}

.btn.ghost {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1px rgba(26, 25, 22, 0.16);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  padding: 72px 40px 40px;
}

.eyebrow {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-3);
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.2;
}

h1 { margin: 0; font-size: clamp(40px, 5vw, 64px); }
h2 { margin: 0; font-size: clamp(28px, 3.4vw, 42px); }
h3 { margin: 0 0 10px; font-size: 26px; }

.lede {
  margin: 28px 0 0;
  max-width: 36ch;
  font-size: 18px;
  color: var(--ink-2);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.fine { margin: 18px 0 0; font-size: 13px; color: var(--ink-3); }

.hero-stage { display: flex; justify-content: center; }
.phone {
  width: min(320px, 78vw);
  aspect-ratio: 390 / 844;
  border-radius: 36px;
  overflow: hidden;
  background: #111;
  box-shadow: 0 30px 80px rgba(40, 32, 20, 0.16);
  outline: 1px solid var(--hair);
}
.phone img {
  display: block;
  width: 100%;
  height: calc(100% + 92px);
  margin-top: -86px;
  object-fit: cover;
  object-position: center top;
}
.phone.tilt { transform: rotate(2.5deg); }

.manifesto {
  max-width: 760px;
  margin: 0 auto;
  padding: 100px 40px 80px;
  text-align: center;
}

.quote {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.35;
}

.quote-note {
  margin: 28px auto 0;
  max-width: 42ch;
  color: var(--ink-2);
}

.values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 40px 100px;
}

.values article {
  padding: 28px 0 0;
  border-top: 1px solid var(--hair);
}

.index { margin: 0 0 18px; font-size: 12px; letter-spacing: 0.16em; color: var(--ink-3); }
.values p:last-child { color: var(--ink-2); }

.wall, .steps, .pricing { padding: 40px 40px 110px; }
.section-head { max-width: 720px; margin: 0 auto 56px; }

.frames {
  display: grid;
  grid-template-columns: 1fr 1.15fr 1fr;
  gap: 28px;
  align-items: end;
  max-width: 1180px;
  margin: 0 auto;
}

.frame {
  background: var(--ivory);
  padding: 22px 22px 26px;
  box-shadow: 0 18px 50px rgba(40, 32, 20, 0.08);
  outline: 1px solid var(--hair);
}

.frame.featured { padding: 28px 28px 32px; transform: translateY(-18px); }

.painting {
  aspect-ratio: 4 / 5;
  background: #f3eee4;
}

.p1 {
  background:
    radial-gradient(circle at 50% 28%, #e8b84a 0 52px, transparent 53px),
    linear-gradient(#6b4a2a 0 0) 50% 68% / 28px 70px no-repeat,
    radial-gradient(circle at 50% 86%, #f6f0e4 0 90px, transparent 91px),
    #7a5530;
}
.p2 {
  background:
    radial-gradient(circle at 38% 28%, #8aa4b8 0 46px, transparent 47px),
    linear-gradient(#4c6d8a 0 0) 50% 58% / 26px 78px no-repeat,
    radial-gradient(circle at 50% 92%, #c45b48 0 120px, transparent 121px),
    #f3eee4;
}
.p3 {
  background:
    radial-gradient(circle at 42% 32%, #38567a 0 58px, transparent 59px),
    linear-gradient(#c45b48 0 0) 50% 72% / 120px 56px no-repeat,
    #f7f2e8;
}

.frame figcaption { margin-top: 18px; text-align: center; }
.frame strong {
  display: block;
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
}
.frame figcaption span { display: block; margin-top: 6px; font-size: 13px; color: var(--ink-3); }
.frame em {
  display: block;
  margin-top: 10px;
  font-family: var(--serif);
  font-size: 15px;
  color: var(--ink-2);
}

.steps ol {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0;
}

.steps li span { font-size: 12px; letter-spacing: 0.16em; color: var(--ink-3); }
.steps p { margin: 0; color: var(--ink-2); }

.devices {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 40px 120px;
}

.devices figure { margin: 0; }
.devices figcaption { margin-bottom: 22px; min-height: 120px; }
.devices .phone { width: 100%; }

.privacy {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: end;
  max-width: 1180px;
  margin: 0 auto 40px;
  padding: 80px 40px;
  border-top: 1px solid var(--hair);
}

.privacy ul { list-style: none; margin: 0; padding: 0; }
.privacy li {
  padding: 16px 0;
  border-top: 1px solid var(--hair);
  color: var(--ink-2);
}

.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  max-width: 1180px;
  margin: 0 auto;
}

.plans article {
  padding: 28px 26px 32px;
  background: var(--ivory);
  outline: 1px solid var(--hair);
}

.plans .emphasized { background: var(--ink); color: var(--ivory); }
.plans .emphasized .plan-note,
.plans .emphasized li { color: rgba(253, 252, 249, 0.7); }

.badge {
  margin: 0 0 18px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(253, 252, 249, 0.6);
}

.price { margin: 8px 0 0; font-family: var(--serif); font-size: 36px; }
.plan-note { margin: 8px 0 22px; color: var(--ink-2); font-size: 14px; }
.plans ul { list-style: none; margin: 0; padding: 0; color: var(--ink-2); }
.plans li + li { margin-top: 8px; }

.closing {
  text-align: center;
  padding: 120px 40px 100px;
}

.closing .btn { margin-top: 36px; }

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 40px 40px;
  border-top: 1px solid var(--hair);
  color: var(--ink-3);
  font-size: 13px;
}

footer p { margin: 0; }
footer p:first-child { font-family: var(--serif); color: var(--ink); font-size: 16px; }

@media (max-width: 900px) {
  .nav { padding: 16px 20px; }
  .nav nav,
  .nav-cta { display: none; }
  .hero, .values, .steps ol, .devices, .privacy, .plans, .frames {
    grid-template-columns: 1fr;
  }
  .hero, .wall, .steps, .pricing, .privacy, .devices { padding-left: 20px; padding-right: 20px; }
  .frame.featured { transform: none; }
  .phone.tilt { transform: none; }
  footer { flex-direction: column; padding-left: 20px; padding-right: 20px; }
}