/* LaunchOS Landing — re-skinned 2026-06-11 to match the prototype design
   system (chinese_v1/styles.css): warm cream editorial, ink primary,
   gold demo accents. Same product family, same tokens. */

:root {
  /* Apple-grade 中性化（2026-06-15，与原型统一）*/
  --bg: #fbfbfd;
  --bg-alt: #f5f5f7;
  --card: #ffffff;
  --soft: #f5f5f7;
  --line: #d8d8de;
  --ink: #1d1d1f;
  --muted: #86868b;
  --gold-border: #d2d2d7;
  --gold-bg: #f5f5f7;
  --gold-text: #6e6e73;
  --shadow: 0 1px 3px rgba(0,0,0,.04), 0 12px 40px rgba(0,0,0,.06);
  --radius: 20px;
  --maxw: 1080px;
  --space: clamp(56px, 9vw, 104px);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { line-height: 1.08; letter-spacing: -0.01em; }
h2 { font-size: clamp(28px, 4vw, 42px); margin-bottom: 14px; }
a { color: inherit; text-decoration: none; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

/* Tags (prototype 同款) */
.tag {
  display: inline-flex; align-items: center;
  border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 11px; font-size: 12px; font-weight: 600;
  color: var(--muted); background: #fff;
}
.tag--gold {
  border-color: var(--gold-border);
  background: var(--gold-bg);
  color: var(--gold-text);
  font-weight: 700;
}

/* Buttons (prototype 同款形态) */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 22px; border-radius: 13px; font-weight: 700; font-size: 1rem;
  cursor: pointer; border: 1px solid transparent; white-space: nowrap;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--ink); color: #fff; }
.btn--ghost { background: var(--soft); border-color: var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--sm { padding: 9px 16px; font-size: .9rem; }
.btn--block { width: 100%; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 251, 253, .88); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 12px; }
.brand { font-weight: 800; font-size: 1.3rem; letter-spacing: -0.015em; }
.nav__links { display: flex; gap: 22px; font-size: .95rem; color: var(--muted); }
.nav__links a:hover { color: var(--ink); }
.nav__actions { display: flex; align-items: center; gap: 10px; }

.lang-switch { display: flex; gap: 4px; }
.lang-switch__btn {
  border: 1px solid var(--line); background: #fff; border-radius: 10px;
  padding: 6px 10px; font-size: 13px; font-weight: 600; color: var(--muted); cursor: pointer;
}
.lang-switch__btn.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* Hero */
.hero { padding: var(--space) 0; }
.hero__inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; }
.eyebrow { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .14em; margin-bottom: 12px; }
.hero h1 { font-size: clamp(32px, 5.2vw, 54px); margin-bottom: 18px; }
.lead { font-size: 18px; color: var(--ink); opacity: .8; }
.hero__actions { display: flex; gap: 12px; margin: 26px 0 18px; flex-wrap: wrap; }
.hero__support { color: var(--muted); font-size: .95rem; max-width: 520px; }

/* Hero visual: warm product tile + result list */
.hero__visual { display: grid; gap: 14px; }
.hero-tile {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px; display: grid; place-items: center; gap: 10px;
}
.hero-tile__product {
  width: 120px; height: 150px; border-radius: 18px;
  background: radial-gradient(circle at 48% 30%, #ffe6a3, #c98a2f 52%, #231b12);
  box-shadow: 0 0 56px rgba(255, 200, 110, .5);
}
.hero-tile__name { font-weight: 800; font-size: 1.1rem; letter-spacing: -.02em; }
.hero-tile__tag { font-size: 12px; color: var(--muted); }
.hero-result {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px 22px;
}
.hero-result ul { list-style: none; margin-top: 12px; display: grid; gap: 8px; }
.hero-result li { padding-left: 22px; position: relative; font-size: .95rem; }
.hero-result li::before { content: "✓"; position: absolute; left: 0; color: var(--gold-text); font-weight: 700; }

/* Sections */
.section { padding: var(--space) 0; }
.section--alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__lead { color: var(--muted); font-size: 1.05rem; max-width: 640px; margin-bottom: 24px; }
.section__note { color: var(--muted); font-size: .9rem; margin-top: 22px; }

/* Problem list */
.problem-list { list-style: none; display: grid; gap: 10px; max-width: 620px; }
.problem-list li {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 18px; font-weight: 600;
}

/* Result package chips */
.package-items { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.package-items span {
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 9px 16px; font-size: .92rem; font-weight: 600;
}

/* Workflow */
.workflow { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 26px; counter-reset: step; }
.workflow li {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px;
}
.step__num {
  display: inline-grid; place-items: center; width: 30px; height: 30px;
  border-radius: 999px; background: var(--ink); color: #fff;
  font-weight: 700; font-size: .85rem; margin-bottom: 12px;
}
.workflow h3 { font-size: 1.05rem; margin-bottom: 6px; }
.workflow p { color: var(--muted); font-size: .92rem; }

/* Case study */
#case h2 { margin-top: 16px; }
.case-grid { display: grid; grid-template-columns: 1fr auto 1.2fr; gap: 18px; align-items: stretch; margin-top: 26px; }
.case-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 22px;
}
.case-card p { color: var(--muted); margin-top: 14px; }
.case-arrow { align-self: center; font-size: 26px; color: var(--muted); }
.case-visual { height: 150px; border-radius: 16px; margin-top: 14px; position: relative; overflow: hidden; }
.case-visual--raw { background: #cfc5b4; }
.case-visual--up { background: radial-gradient(circle at 48% 32%, #ffe6a3, #c98a2f 52%, #231b12); }
.case-glow { position: absolute; inset: 0; box-shadow: inset 0 0 70px rgba(255, 200, 110, .55); }
.case-slogan { font-weight: 700; color: var(--ink) !important; font-size: 1.05rem; }
.case-card--after ul { list-style: none; margin-top: 12px; display: grid; gap: 7px; }
.case-card--after li { padding-left: 20px; position: relative; font-size: .92rem; color: var(--muted); }
.case-card--after li::before { content: "·"; position: absolute; left: 6px; font-weight: 700; color: var(--gold-text); }
.case-cta { margin-top: 28px; display: grid; gap: 10px; justify-items: start; }

/* Readiness score */
.score { display: grid; grid-template-columns: auto 1fr; gap: 40px; align-items: center; margin-top: 26px; }
.score__gauge { display: grid; justify-items: center; gap: 10px; }
.score__circle {
  width: 150px; height: 150px; border-radius: 50%;
  border: 6px solid var(--gold-border);
  background: var(--card); box-shadow: var(--shadow);
  display: grid; place-items: center; align-content: center;
}
.score__value { font-size: 2.6rem; font-weight: 800; letter-spacing: -.01em; line-height: 1; }
.score__outof { color: var(--muted); font-size: .9rem; }
.score__status { font-weight: 700; }
.score__right { display: grid; gap: 20px; }
.score__dims { list-style: none; display: grid; gap: 12px; max-width: 560px; }
.score__dims li { display: grid; grid-template-columns: 110px 1fr 36px; align-items: center; gap: 12px; }
.score__label { font-size: .92rem; font-weight: 600; }
.score__bar { height: 8px; border-radius: 999px; background: var(--soft); overflow: hidden; }
.score__bar i { display: block; height: 100%; background: var(--ink); border-radius: 999px; }
.score__pts { font-size: .9rem; color: var(--muted); text-align: right; font-weight: 600; }
.score__fit small { display: block; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 8px; }
.fit-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.fit-chips span {
  background: #fff; border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 14px; font-size: .9rem; font-weight: 600;
}
.fit-chips span:first-child { border-color: var(--gold-border); background: var(--gold-bg); color: var(--gold-text); }

/* Pricing */
.pricing { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 26px; max-width: 720px; }
.plan {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 26px; display: grid; gap: 14px; align-content: start;
}
.plan--featured { border-color: var(--gold-border); }
.plan__when {
  justify-self: start; font-size: 12px; font-weight: 700; color: var(--muted);
  border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 4px 10px;
}
.plan__when--next { border-color: var(--gold-border); background: var(--gold-bg); color: var(--gold-text); }
.plan h3 { font-size: 1.3rem; }
.plan__price { font-size: 2rem; font-weight: 800; letter-spacing: -.01em; }
.plan__price span { font-size: 1rem; color: var(--muted); font-weight: 600; }
.plan ul { list-style: none; display: grid; gap: 8px; }
.plan li { padding-left: 22px; position: relative; font-size: .95rem; color: var(--muted); }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--gold-text); font-weight: 700; }

/* Final CTA */
.final-cta { padding: var(--space) 0; background: var(--ink); color: #f6f4ef; }
.final-cta h2 { color: #fff; }
.final-cta .lead { color: rgba(246, 244, 239, .75); }
.capture { display: flex; gap: 10px; margin: 28px 0 12px; max-width: 460px; flex-wrap: wrap; }
.capture input {
  flex: 1; min-width: 220px; padding: 13px 16px; border-radius: 13px;
  border: 1px solid rgba(246, 244, 239, .3); background: rgba(255, 255, 255, .08);
  color: #fff; font-size: 1rem; outline: none;
}
.capture input::placeholder { color: rgba(246, 244, 239, .45); }
.capture input:focus { border-color: var(--gold-border); }
.final-cta .btn--primary { background: #fff; color: var(--ink); font-weight: 700; }
.final-cta .btn--ghost { background: transparent; border-color: rgba(246, 244, 239, .3); color: #f6f4ef; }
.capture__msg { font-size: .92rem; min-height: 1.4em; }
.capture__msg.is-ok { color: #ffe6a3; }
.capture__msg.is-err { color: #ff9d8a; }
.final-cta__secondary { margin-top: 16px; }

/* Footer */
.footer { padding: 36px 0; border-top: 1px solid var(--line); }
.footer p { font-weight: 600; }
.footer__fine { color: var(--muted); font-size: .85rem; font-weight: 400; margin-top: 6px; }

/* Responsive */
@media (max-width: 920px) {
  .hero__inner { grid-template-columns: 1fr; gap: 28px; }
  .workflow { grid-template-columns: 1fr 1fr; }
  .score { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 640px) {
  .nav__links { display: none; }
  .nav__inner { gap: 8px; }
  .brand { font-size: 1.12rem; }
  .nav__actions { gap: 6px; }
  .lang-switch { gap: 3px; }
  .lang-switch__btn { padding: 5px 7px; font-size: 12px; }
  .nav__actions .btn--sm { padding: 7px 11px; font-size: .8rem; border-radius: 10px; }
  .workflow { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .case-arrow { transform: rotate(90deg); justify-self: center; }
  .pricing { grid-template-columns: 1fr; }
  .score__dims li { grid-template-columns: 90px 1fr 32px; }
}

/* tag 与紧随的 h2 之间留间距（结果区/案例区）*/
.tag + h2 { margin-top: 16px; }