:root {
  color-scheme: light;
  --paper: #f5f0e6;
  --paper-deep: #e9dfcf;
  --card: #fffdf8;
  --ink: #17231f;
  --muted: #716d64;
  --forest: #0e4b3e;
  --forest-dark: #08362d;
  --jade: #dce9e1;
  --gold: #bd8b3c;
  --line: rgba(14, 75, 62, .14);
  --shadow: 0 28px 80px rgba(35, 46, 39, .10);
  --radius: 28px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 15% 5%, rgba(189, 139, 60, .10), transparent 28rem),
    radial-gradient(circle at 90% 20%, rgba(14, 75, 62, .08), transparent 32rem),
    var(--paper);
  color: var(--ink);
  font: 16px/1.68 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.shell { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid transparent;
  background: rgba(245, 240, 230, .88);
  backdrop-filter: blur(18px);
}
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 760; letter-spacing: .04em; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 14px; background: var(--forest); color: #fff; font: 25px/1 Georgia, serif; box-shadow: 0 10px 28px rgba(14,75,62,.20); }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: #425047; text-decoration: none; font-size: 14px; }
.nav-links a:hover { color: var(--forest); }
.nav-cta { padding: 10px 18px; border-radius: 999px; background: var(--forest); color: #fff !important; }

.hero { padding: 76px 0 68px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 48px; align-items: center; }
.eyebrow { margin: 0 0 18px; color: var(--forest); font-size: 13px; font-weight: 750; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3, p { text-wrap: pretty; }
h1 { margin: 0; max-width: 720px; font: 600 clamp(44px, 5.4vw, 68px)/1.12 Georgia, "Songti SC", "STSong", serif; letter-spacing: -.028em; }
.hero-copy { margin: 24px 0 32px; max-width: 600px; color: var(--muted); font-size: 18px; line-height: 1.85; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; }
.button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; padding: 0 24px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.56); color: var(--forest); text-decoration: none; font-weight: 700; }
.button.primary { border-color: var(--forest); background: var(--forest); color: #fff; box-shadow: 0 14px 34px rgba(14,75,62,.18); }
.button:hover { transform: translateY(-1px); }
.trust-row { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted); font-size: 13px; }
.trust-row span::before { content: ""; display: inline-block; width: 6px; height: 6px; margin: 0 8px 2px 0; border-radius: 50%; background: var(--gold); }

.phone-stage { position: relative; min-height: 570px; display: grid; place-items: center; }
.orbit { position: absolute; width: 520px; height: 520px; border: 1px solid rgba(14,75,62,.12); border-radius: 50%; }
.orbit::after { content: ""; position: absolute; inset: 62px; border: 1px dashed rgba(189,139,60,.22); border-radius: inherit; }
.phone { position: relative; width: 278px; min-height: 556px; padding: 12px; border-radius: 46px; background: #14201c; box-shadow: 0 42px 100px rgba(24,35,31,.25); transform: rotate(2deg); }
.screen { min-height: 532px; padding: 34px 21px 23px; border-radius: 36px; background: #faf6ed; overflow: hidden; }
.screen-top { width: 88px; height: 23px; margin: -24px auto 34px; border-radius: 999px; background: #14201c; }
.app-icon { width: 72px; height: 72px; margin: 0 auto 18px; border-radius: 22px; box-shadow: 0 14px 30px rgba(14,75,62,.18); }
.screen-title { text-align: center; font: 600 29px/1.3 Georgia, "Songti SC", serif; }
.screen-subtitle { margin-top: 6px; text-align: center; color: #8b8275; font-size: 13px; }
.question-card { margin-top: 32px; padding: 20px; border: 1px solid #e8ddca; border-radius: 22px; background: #fffdf9; }
.question-card small { color: #9a8d7b; }
.question-card strong { display: block; margin-top: 8px; font: 600 19px/1.5 Georgia, "Songti SC", serif; }
.hexagram { margin: 24px auto; width: 108px; display: grid; gap: 7px; }
.yao { height: 7px; display: flex; gap: 9px; }
.yao::before, .yao::after { content: ""; flex: 1; border-radius: 3px; background: var(--forest); }
.yao.solid { display: block; border-radius: 3px; background: var(--forest); }
.screen-button { display: grid; min-height: 50px; place-items: center; border-radius: 17px; background: var(--forest); color: #fff; font-weight: 720; }
.float-card { position: absolute; right: -6px; bottom: 88px; width: 180px; padding: 18px; border: 1px solid rgba(255,255,255,.7); border-radius: 22px; background: rgba(255,253,248,.9); box-shadow: var(--shadow); backdrop-filter: blur(12px); }
.float-card b { display: block; color: var(--forest); font-size: 14px; }
.float-card span { color: var(--muted); font-size: 12px; }

.section { padding: 80px 0; }
.section.alt { background: rgba(255,253,248,.56); border-block: 1px solid rgba(14,75,62,.08); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 48px; margin-bottom: 38px; }
.section h2 { margin: 0; font: 600 clamp(34px, 4.2vw, 48px)/1.22 Georgia, "Songti SC", serif; letter-spacing: -.02em; }
.section-lead { max-width: 480px; margin: 0; color: var(--muted); line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature { min-height: 224px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,253,248,.82); box-shadow: 0 15px 50px rgba(35,46,39,.05); }
.feature-number { display: grid; width: 42px; height: 42px; place-items: center; border-radius: 13px; background: var(--jade); color: var(--forest); font-weight: 800; }
.feature h3 { margin: 24px 0 8px; font-size: 20px; }
.feature p { margin: 0; color: var(--muted); }
.product-card { display: grid; grid-template-columns: 130px 1fr auto; gap: 28px; align-items: center; padding: 32px; border-radius: 30px; background: var(--forest); color: #fff; box-shadow: 0 26px 70px rgba(14,75,62,.18); }
.product-card .app-icon { width: 104px; height: 104px; margin: 0; border: 1px solid rgba(255,255,255,.2); border-radius: 28px; }
.product-card h3 { margin: 0 0 8px; font: 600 30px/1.25 Georgia, "Songti SC", serif; }
.product-card p { margin: 0; color: #d8e5df; }
.product-card .button { border-color: rgba(255,255,255,.4); color: #fff; background: rgba(255,255,255,.08); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; counter-reset: steps; }
.step { position: relative; padding: 28px 0; border-top: 1px solid var(--line); counter-increment: steps; }
.step::before { content: "0" counter(steps); color: var(--gold); font: 600 13px/1 Georgia, serif; }
.step h3 { margin: 18px 0 8px; }
.step p { margin: 0; color: var(--muted); }
.callout { display: grid; grid-template-columns: 1fr auto; gap: 34px; align-items: center; padding: 42px 46px; border-radius: 32px; background: #17231f; color: #fff; }
.callout h2 { font-size: clamp(30px, 4vw, 46px); }
.callout p { color: #cbd6d0; }
.callout .button { border-color: #fff; background: #fff; color: var(--forest); }

.page-hero { padding: 64px 0 36px; }
.page-hero h1 { font-size: clamp(42px, 6vw, 68px); }
.page-hero p { max-width: 690px; color: var(--muted); font-size: 18px; }
.content-card { max-width: 920px; margin: 0 0 70px; padding: clamp(24px, 5vw, 48px); border: 1px solid var(--line); border-radius: 30px; background: rgba(255,253,248,.88); box-shadow: var(--shadow); }
.content-card h2 { margin: 34px 0 10px; color: var(--forest); font: 600 25px/1.4 Georgia, "Songti SC", serif; }
.content-card h2:first-child { margin-top: 0; }
.content-card h3 { margin: 24px 0 7px; }
.content-card p, .content-card li { color: #48534d; }
.content-card a { color: var(--forest); font-weight: 650; }
.notice { padding: 18px 20px; border-left: 4px solid var(--gold); border-radius: 12px; background: #f6ead5; }
.faq { border-top: 1px solid var(--line); padding: 22px 0; }
.faq:last-child { border-bottom: 1px solid var(--line); }
.faq h3 { margin: 0 0 6px; }
.faq p { margin: 0; }
.contact-box { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px; border-radius: 22px; background: var(--jade); }
.contact-box p { margin: 2px 0; }

.site-footer { padding: 46px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 26px; align-items: start; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: end; gap: 18px; }
.footer-links a { text-decoration: none; }
.legal-note { max-width: 680px; margin-top: 12px; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero { padding-top: 58px; }
  .phone-stage { min-height: 620px; }
  .feature-grid, .steps { grid-template-columns: 1fr; }
  .feature { min-height: auto; }
  .product-card { grid-template-columns: 92px 1fr; }
  .product-card .app-icon { width: 86px; height: 86px; border-radius: 24px; }
  .product-card .button { grid-column: 1 / -1; }
  .section-head { display: block; }
  .section-lead { margin-top: 15px; }
}

@media (max-width: 620px) {
  body { font-size: 15.5px; line-height: 1.7; }
  .shell { width: min(100% - 32px, 1160px); }
  .nav { min-height: 66px; }
  .nav { gap: 10px; }
  .nav-links a:not(.nav-cta) { display: none; }
  .nav-cta { padding: 8px 12px; font-size: 12px; white-space: nowrap; }
  .brand-mark { width: 38px; height: 38px; border-radius: 12px; }
  .brand { gap: 9px; font-size: 15px; }
  .hero { padding: 50px 0 56px; }
  h1 { font-size: clamp(40px, 12vw, 46px); line-height: 1.14; }
  .hero-copy { margin: 22px 0 28px; font-size: 16px; line-height: 1.86; }
  .actions { gap: 10px; }
  .button { min-height: 48px; padding: 0 20px; font-size: 14px; }
  .trust-row { gap: 9px 14px; margin-top: 22px; font-size: 12px; }
  .phone-stage { min-height: 550px; transform: scale(.9); margin: -20px 0; }
  .orbit { width: 430px; height: 430px; }
  .float-card { right: -12px; }
  .section { padding: 60px 0; }
  .section h2 { font-size: 31px; line-height: 1.3; }
  .section-head { margin-bottom: 28px; }
  .section-lead { font-size: 15px; }
  .feature { padding: 24px; border-radius: 24px; }
  .product-card { grid-template-columns: 72px 1fr; padding: 25px; gap: 18px; }
  .product-card .app-icon { width: 72px; height: 72px; border-radius: 20px; }
  .product-card h3 { font-size: 24px; }
  .callout { grid-template-columns: 1fr; padding: 28px 24px; border-radius: 26px; }
  .page-hero { padding: 48px 0 28px; }
  .page-hero h1 { font-size: 39px; }
  .page-hero p { font-size: 16px; }
  .content-card { padding: 24px 21px; border-radius: 24px; }
  .content-card h2 { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: start; }
  .site-footer { padding: 36px 0 44px; }
  .contact-box { display: block; }
  .contact-box .button { margin-top: 15px; }
}

@media (prefers-reduced-motion: no-preference) {
  .button { transition: transform .2s ease, box-shadow .2s ease; }
  .phone { animation: float 6s ease-in-out infinite; }
  @keyframes float { 50% { transform: rotate(1deg) translateY(-10px); } }
}