:root {
  --surface-primary: #f5f8fc;
  --surface-secondary: #eaf1f8;
  --surface-elevated: #ffffff;
  --text-primary: #16324a;
  --text-secondary: #546b7d;
  --border-default: #ccd9e6;
  --border-subtle: #e2eaf2;
  --accent-primary: #1468c0;
  --accent-hover: #10549b;
  --accent-soft: #e8f2ff;
  --accent-secondary: #13745c;
  --accent-secondary-soft: #e7f5ef;
  --brand-ink: #104b7a;
  --brand-mist: #dff1f6;
  --on-accent: #ffffff;
  --accent-warm: #9c5414;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 64px;
  --radius-control: 8px;
  --radius-card: 12px;
  --radius-banner: 16px;
  color: var(--text-primary);
  background: var(--surface-primary);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; background: var(--surface-primary); }
a { color: inherit; }
.site-header { position: sticky; z-index: 10; top: 0; display: flex; align-items: center; justify-content: space-between; min-height: 72px; padding: var(--space-3) max(var(--space-4), calc((100vw - 1200px) / 2)); border-bottom: 1px solid var(--border-subtle); background: rgba(255, 255, 255, .96); }
.brand { display: flex; align-items: center; gap: var(--space-3); color: var(--text-primary); text-decoration: none; }
.brand-mark { display: grid; width: 42px; height: 42px; place-items: center; border-radius: var(--radius-control); color: var(--on-accent); background: var(--brand-ink); font-size: 20px; font-weight: 700; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 16px; }
.brand small { margin-top: 2px; color: var(--text-secondary); font-size: 10px; letter-spacing: 1px; }
nav { display: flex; gap: var(--space-6); }
nav a { padding: var(--space-2) 0; color: var(--text-secondary); font-size: 14px; text-decoration: none; }
nav a:hover, nav a:focus-visible { color: var(--accent-primary); }
main { overflow: hidden; }
.hero, .section, footer { width: min(1200px, calc(100% - 32px)); margin-inline: auto; }
.hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: var(--space-9); align-items: center; min-height: 650px; padding: var(--space-10) 0; }
.eyebrow { margin: 0 0 var(--space-3); color: var(--accent-secondary); font-size: 14px; font-weight: 600; letter-spacing: 2px; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { max-width: 720px; margin: 0; font-size: clamp(38px, 5.2vw, 70px); line-height: 1.14; letter-spacing: -2px; text-wrap: balance; }
.hero-lead { max-width: 640px; margin: var(--space-6) 0 0; color: var(--text-secondary); font-size: 18px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-7); }
.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 var(--space-5); border-radius: var(--radius-control); font-weight: 600; text-decoration: none; transition: transform 140ms ease-out, background 140ms ease-out; }
.button:active { transform: translateY(1px); }
.button-primary { color: var(--on-accent); background: var(--accent-primary); }
.button-primary:hover { background: var(--accent-hover); }
.button-secondary { color: var(--accent-primary); background: var(--accent-soft); }
.hero-scene { position: relative; min-height: 470px; overflow: hidden; border-radius: var(--radius-banner); background: var(--brand-mist); }
.hero-scene::before, .hero-scene::after { position: absolute; right: -12%; bottom: -20%; width: 78%; height: 66%; border-radius: 48% 52% 0 0; background: #8fc2c4; content: ""; transform: rotate(-8deg); }
.hero-scene::after { right: 30%; bottom: -30%; width: 90%; height: 72%; background: #4d9186; transform: rotate(10deg); }
.scene-sun { position: absolute; top: 52px; right: 52px; width: 92px; height: 92px; border-radius: 50%; background: #e9b86b; }
.scene-card { position: absolute; z-index: 2; display: grid; width: min(300px, calc(100% - 48px)); grid-template-columns: 42px 1fr; gap: 2px var(--space-3); padding: var(--space-4); border-radius: var(--radius-card); background: var(--surface-elevated); }
.scene-card span { grid-row: 1 / 3; display: grid; width: 42px; height: 42px; place-items: center; border-radius: var(--radius-control); color: var(--on-accent); background: var(--accent-primary); font-size: 13px; font-weight: 700; }
.scene-card strong { font-size: 16px; }
.scene-card small { color: var(--text-secondary); line-height: 1.5; }
.scene-card-primary { top: 86px; left: 24px; }
.scene-card-secondary { right: 24px; bottom: 84px; }
.scene-card-secondary span { background: var(--accent-secondary); }
.scene-route { position: absolute; z-index: 1; top: 46%; left: 28%; width: 46%; border-top: 2px dashed rgba(16, 75, 122, .6); transform: rotate(26deg); }
.scene-route i { position: absolute; top: -6px; width: 10px; height: 10px; border: 2px solid var(--brand-ink); border-radius: 50%; background: var(--brand-mist); }
.scene-route i:nth-child(1) { left: 0; }.scene-route i:nth-child(2) { left: 50%; }.scene-route i:nth-child(3) { right: 0; }
.section { padding: 96px 0; }
.section-heading { max-width: 700px; }
h2 { margin: 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.25; letter-spacing: -1px; }
.section-heading > p:last-child, .platform-copy > p { color: var(--text-secondary); font-size: 17px; line-height: 1.8; }
.service-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-4); margin-top: var(--space-8); }
.service-grid article { min-height: 260px; padding: var(--space-6); border-top: 3px solid var(--accent-primary); background: var(--surface-elevated); }
.service-grid article:nth-child(even) { border-top-color: var(--accent-secondary); }
.service-grid span { color: var(--text-secondary); font-size: 13px; letter-spacing: 1px; }
.service-grid h3 { margin: var(--space-7) 0 var(--space-3); font-size: 21px; line-height: 1.4; }
.service-grid p { margin: 0; color: var(--text-secondary); font-size: 14px; line-height: 1.75; }
.platform { display: grid; grid-template-columns: 1fr 390px; gap: var(--space-9); align-items: center; padding-inline: var(--space-8); border-radius: var(--radius-banner); background: var(--surface-secondary); }
.platform dl { display: grid; gap: var(--space-4); margin: var(--space-7) 0 0; }
.platform dl div { display: grid; grid-template-columns: 96px 1fr; gap: var(--space-3); padding-top: var(--space-4); border-top: 1px solid var(--border-default); }
.platform dt { font-weight: 700; }.platform dd { margin: 0; color: var(--text-secondary); line-height: 1.6; }
.miniapp-card { padding: var(--space-7); border-radius: var(--radius-card); color: var(--on-accent); background: var(--brand-ink); }
.miniapp-label { display: inline-block; padding: 5px 10px; border-radius: var(--radius-control); color: var(--brand-ink); background: var(--brand-mist); font-size: 12px; }
.miniapp-card strong { display: block; margin-top: var(--space-6); font-size: 34px; }
.miniapp-card p { color: #d9eaf3; line-height: 1.7; }
.miniapp-status { margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid rgba(255, 255, 255, .2); font-size: 13px; }
.miniapp-status i { display: inline-block; width: 8px; height: 8px; margin-right: var(--space-2); border-radius: 50%; background: #79d3ad; }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-9); align-items: end; }
.contact > div:first-child > p:last-child { color: var(--text-secondary); line-height: 1.7; }
.contact-list { border-top: 1px solid var(--border-default); }
.contact-list p { display: grid; grid-template-columns: 100px 1fr; gap: var(--space-4); margin: 0; padding: var(--space-4) 0; border-bottom: 1px solid var(--border-default); }
.contact-list span { color: var(--text-secondary); }
.contact-list a { color: var(--accent-primary); font-weight: 600; }
footer { display: flex; justify-content: space-between; gap: var(--space-4); padding: var(--space-6) 0 var(--space-8); border-top: 1px solid var(--border-default); color: var(--text-secondary); font-size: 12px; }
.filing { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: var(--space-3); }
.filing a { text-decoration: none; }
[hidden] { display: none !important; }
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-scene { min-height: 420px; }
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .platform { grid-template-columns: 1fr; }
  .miniapp-card { max-width: 560px; }
}
@media (max-width: 640px) {
  html { scroll-behavior: auto; }
  .site-header { min-height: 64px; }
  nav { display: none; }
  .brand strong { font-size: 14px; }
  .hero { gap: var(--space-7); padding: var(--space-8) 0; }
  h1 { font-size: 42px; letter-spacing: -1px; }
  .hero-lead { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .hero-scene { min-height: 380px; }
  .scene-card-primary { top: 42px; }.scene-card-secondary { right: 16px; bottom: 54px; }
  .section { padding: 68px 0; }
  .service-grid { grid-template-columns: 1fr; }
  .service-grid article { min-height: auto; }
  .platform { width: 100%; padding: 68px max(var(--space-4), calc((100vw - 1200px) / 2)); border-radius: 0; }
  .platform dl div { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .contact-list p { grid-template-columns: 82px 1fr; }
  footer { flex-direction: column; }
  .filing { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }.button { transition: none; } }