/* China-edition product page. Existing product and legal styles stay separate. */
:root { color-scheme: light; --ink: #211735; --muted: #665e73; --purple: #6740b4; --line: #e8e1ef; --paper: #f8f6fc; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 104px; }
body { margin: 0; background: #fff; color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.75; font-synthesis: none; }
h1, h2, h3, p, figure { margin: 0; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 5px; }
a:focus-visible, summary:focus-visible { outline: 3px solid #9962df; outline-offset: 5px; }
img { display: block; max-width: 100%; height: auto; }
.shell { width: min(1120px, calc(100% - 64px)); margin-inline: auto; }
.skip { position: fixed; z-index: 100; top: 10px; left: 16px; padding: 10px 20px; background: #fff; transform: translateY(-180%); }
.skip:focus { transform: translateY(0); }
.site-header { background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20; }
.header-inner { min-height: 76px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.brand { display: inline-flex; gap: 10px; align-items: center; font-size: 17px; font-weight: 750; letter-spacing: .04em; white-space: nowrap; }
.brand span { width: 10px; height: 10px; background: var(--purple); border-radius: 50%; }
.site-header nav, .site-footer nav { display: flex; flex-wrap: wrap; gap: 26px; font-size: 13px; }
.site-header nav a, .site-footer nav a { display: inline-flex; min-height: 44px; align-items: center; }
.hero { display: grid; grid-template-columns: 1.3fr .8fr; gap: 80px; align-items: center; padding-block: 62px 78px; }
.app-label { display: flex; align-items: center; gap: 14px; font-size: 15px; font-weight: 650; }
.app-label img { border-radius: 13px; border: 1px solid var(--line); }
.app-label span { display: block; margin-top: 3px; font-size: 11px; letter-spacing: .08em; color: var(--muted); font-weight: 450; }
h1 { margin-top: 34px; font-size: clamp(38px, 4.5vw, 62px); font-weight: 650; letter-spacing: -.055em; line-height: 1.35; }
h1 em { color: var(--purple); font-style: normal; }
.lead { max-width: 520px; margin-top: 24px; color: var(--muted); font-size: 17px; line-height: 1.95; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px 28px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 24px; min-height: 52px; padding: 12px 23px; border-radius: 8px; background: var(--purple); color: #fff; font-size: 14px; font-weight: 600; }
.button:hover { background: #553197; text-decoration: none; }
.text-link { display: inline-flex; align-items: center; gap: 16px; min-height: 44px; color: var(--purple); font-weight: 600; font-size: 13px; }
.hero-note { margin-top: 17px; color: var(--muted); font-size: 12px; }
.hero-note strong { color: var(--ink); font-weight: 600; }
.quick-facts { padding: 26px 0 0; margin: 28px 0 0; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 12px 24px; list-style: none; color: var(--muted); font-size: 12px; }
.quick-facts li::before { content: "✓"; margin-right: 8px; color: var(--purple); }
.hero-screen { width: min(100%, 302px); margin-inline: auto; position: relative; }
.hero-screen::before { content: ""; position: absolute; z-index: -1; inset: 15% 0 9%; background: radial-gradient(ellipse, #e4d5f6, transparent 70%); }
.hero-screen img, .screen-pair img { border-radius: 28px; box-shadow: 0 20px 45px #33204620; border: 1px solid #3c2b58; }
figcaption { text-align: center; font-size: 11px; color: var(--muted); margin-top: 16px; }
.feature-section { background: var(--paper); padding-block: 66px 70px; border-block: 1px solid var(--line); }
.eyebrow { color: var(--purple); font-size: 12px; font-weight: 650; letter-spacing: .14em; margin-bottom: 14px; }
h2 { font-size: clamp(28px, 3.3vw, 39px); font-weight: 600; letter-spacing: -.035em; line-height: 1.45; }
.section-heading > p:last-child:not(.eyebrow) { font-size: 15px; color: var(--muted); margin-top: 14px; }
.feature-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 48px; margin-top: 40px; }
.feature-number { color: #9b84bc; font-size: 13px; letter-spacing: .08em; }
h3 { font-size: 18px; font-weight: 600; }
.feature-grid h3 { margin-top: 12px; }
.feature-grid p, .use-grid p { font-size: 14px; color: var(--muted); margin-top: 10px; line-height: 1.9; }
.studio { padding-block: 88px; display: grid; grid-template-columns: .95fr 1.25fr; gap: 72px; align-items: center; }
.steps { padding: 0; margin: 30px 0 0; list-style: none; counter-reset: step; }
.steps li { padding: 0 0 25px 42px; position: relative; counter-increment: step; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 1px; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: #efe8f8; color: var(--purple); font-size: 12px; font-weight: 600; }
.steps h3 { font-size: 16px; }
.steps p { color: var(--muted); font-size: 14px; margin-top: 8px; }
.screen-pair { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; align-items: start; }
.screen-pair figure:last-child { padding-top: 48px; }
.screen-pair img { border-radius: 23px; }
.use-cases { padding-block: 0 80px; }
.use-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 36px; margin-top: 30px; }
.use-grid article { border-top: 1px solid var(--line); padding-top: 22px; }
.membership { padding: 52px; background: #f0e9f8; border-radius: 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.membership-intro { color: var(--muted); font-size: 15px; margin-top: 22px; max-width: 390px; }
.price { display: flex; align-items: baseline; gap: 10px; }
.price strong { color: var(--purple); font-size: 57px; line-height: 1.15; font-weight: 650; letter-spacing: -.04em; }
.price span { font-size: 16px; color: var(--muted); }
.price-label { font-size: 12px; margin-top: 14px; color: var(--muted); }
.price-panel ul { list-style: none; padding: 23px 0; margin: 22px 0 0; border-top: 1px solid #d8cbe8; font-size: 14px; }
.price-panel li { margin-bottom: 7px; }
.price-panel li::before { content: "✓"; color: var(--purple); margin-right: 10px; }
.billing-note { margin-top: 18px; font-size: 11px; line-height: 1.85; color: var(--muted); }
.faq { padding-block: 80px; }
.faq .section-heading { margin-bottom: 30px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { padding-block: 21px; cursor: pointer; font-size: 16px; font-weight: 550; }
.faq summary::marker { color: var(--purple); }
.faq details p { max-width: 850px; padding: 0 0 24px 20px; color: var(--muted); font-size: 14px; line-height: 1.95; }
.faq details a { color: var(--purple); text-decoration: underline; text-underline-offset: 4px; }
.support { border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 40px; padding-block: 50px 65px; }
.support h2 { font-size: 28px; }
.support p:not(.eyebrow) { color: var(--muted); font-size: 14px; margin-top: 18px; }
.support-email { display: inline-flex; gap: 15px; align-items: center; min-height: 44px; color: var(--purple); font-size: 16px; overflow-wrap: anywhere; margin-top: 8px; }
.site-footer { background: var(--paper); border-top: 1px solid var(--line); padding-block: 22px; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.site-footer p { font-size: 11px; color: var(--muted); }
.site-footer nav { gap: 20px; font-size: 12px; }
@media (max-width: 950px) {
  .hero { gap: 40px; grid-template-columns: 1.15fr .85fr; }
  h1 { font-size: 44px; }
  .hero-screen { max-width: 260px; }
  .feature-grid { gap: 28px; }
  .studio { gap: 34px; }
  .membership { gap: 40px; padding: 38px; }
}
@media (max-width: 700px) {
  html { scroll-padding-top: 120px; }
  .shell { width: calc(100% - 40px); }
  .header-inner { min-height: 100px; flex-wrap: wrap; gap: 0; padding-block: 11px 5px; }
  .site-header nav { width: 100%; justify-content: space-between; gap: 8px; font-size: 12px; }
  .site-header nav a { min-height: 40px; }
  .brand { font-size: 15px; }
  .hero { grid-template-columns: 1fr; padding-block: 36px 46px; gap: 36px; }
  .app-label { font-size: 14px; }
  .app-label img { width: 48px; height: 48px; }
  h1 { margin-top: 25px; font-size: clamp(35px, 8.8vw, 50px); }
  .lead { font-size: 15px; margin-top: 19px; }
  .actions { margin-top: 24px; gap: 12px 20px; }
  .button { font-size: 13px; padding-inline: 18px; gap: 16px; }
  .hero-note { font-size: 11px; }
  .quick-facts { padding-top: 18px; margin-top: 22px; gap: 16px; font-size: 11px; }
  .hero-screen { max-width: 260px; }
  .feature-section { padding-block: 44px; }
  .feature-grid { grid-template-columns: 1fr; gap: 28px; margin-top: 30px; }
  .feature-grid article { border-top: 1px solid var(--line); padding-top: 18px; }
  .feature-grid h3 { margin-top: 8px; }
  .studio { grid-template-columns: 1fr; padding-block: 48px; gap: 18px; }
  .screen-pair { max-width: 480px; margin-inline: auto; gap: 14px; }
  .screen-pair img { border-radius: 16px; }
  .screen-pair figure:last-child { padding-top: 30px; }
  figcaption { font-size: 10px; }
  .use-cases { padding-bottom: 44px; }
  .use-grid { grid-template-columns: 1fr; gap: 24px; }
  .membership { padding: 28px 22px; grid-template-columns: 1fr; gap: 30px; border-radius: 14px; }
  .membership h2 br { display: none; }
  .price strong { font-size: 49px; }
  .faq { padding-block: 48px; }
  .faq summary { font-size: 14px; line-height: 1.8; padding-block: 19px; }
  .faq details p { font-size: 13px; padding-left: 0; }
  .support { flex-direction: column; align-items: flex-start; gap: 23px; padding-block: 38px 44px; }
  .support h2 { font-size: 26px; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 8px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }