:root {
  --ink: #17211b;
  --muted: #647067;
  --paper: #f6f7f2;
  --surface: #ffffff;
  --line: #d8ded8;
  --green: #176b45;
  --green-dark: #0d4d31;
  --lime: #d8ff65;
  --blue: #dce8ff;
  --orange: #ffdfb8;
  --radius: 18px;
  --shadow: 0 18px 60px rgba(23, 33, 27, .09);
  --space: clamp(72px, 10vw, 132px);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
button { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(246, 247, 242, .9);
  border-bottom: 1px solid rgba(216, 222, 216, .85);
  backdrop-filter: blur(14px);
}
.nav { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 800; letter-spacing: -.03em; }
.brand img { width: 38px; height: 38px; border-radius: 10px; }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 14px; font-weight: 650; }
.nav-links a:hover { color: var(--green); }
.mobile-toggle { display: none; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); padding: 7px 11px; }
.hero { padding: clamp(74px, 10vw, 138px) 0 86px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.06fr .94fr; align-items: center; gap: clamp(40px, 7vw, 92px); }
.eyebrow, .tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 11px; border: 1px solid var(--ink); border-radius: 999px;
  font-size: 12px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(23, 107, 69, .13); }
h1, h2, h3 { margin: 0; line-height: 1.12; letter-spacing: -.045em; }
h1 { max-width: 800px; margin-top: 24px; font-size: clamp(46px, 7vw, 86px); }
h2 { font-size: clamp(34px, 5vw, 60px); }
h3 { font-size: 22px; }
.lead { max-width: 680px; margin: 24px 0 0; color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 49px; padding: 0 20px; border: 1px solid var(--ink); border-radius: 12px;
  background: var(--surface); font-weight: 800; transition: .2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 7px 0 var(--ink); }
.btn-primary { color: #fff; background: var(--green); border-color: var(--green); }
.btn-lime { background: var(--lime); color: var(--ink); }
.meta-row { display: flex; flex-wrap: wrap; gap: 12px 24px; margin-top: 30px; color: var(--muted); font-size: 14px; font-weight: 700; }
.visual { position: relative; }
.visual::before { content: ""; position: absolute; inset: -12% 14% 10% -12%; border-radius: 46% 54% 40% 60%; background: var(--lime); transform: rotate(-7deg); }
.visual img { position: relative; width: 100%; border: 1px solid var(--ink); border-radius: 24px; box-shadow: 18px 18px 0 var(--ink); }
.mini-card { position: absolute; right: -15px; bottom: -24px; z-index: 2; padding: 15px 18px; border: 1px solid var(--ink); border-radius: 14px; background: #fff; font-size: 13px; font-weight: 800; }
.section { padding: var(--space) 0; }
.section-lined { border-top: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 46px; }
.section-head p { max-width: 530px; margin: 0; color: var(--muted); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  padding: 28px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); box-shadow: 0 0 0 transparent; transition: .22s ease;
}
.card:hover { border-color: var(--ink); transform: translateY(-4px); box-shadow: var(--shadow); }
.card .num { display: block; margin-bottom: 34px; color: var(--green); font: 800 13px/1 ui-monospace, monospace; }
.card p { margin: 13px 0 0; color: var(--muted); }
.feature-row { display: grid; grid-template-columns: 1fr 1fr; min-height: 320px; border-top: 1px solid var(--line); }
.feature-copy { padding: 45px 7% 45px 0; }
.feature-demo { display: grid; place-items: center; padding: 36px; border-left: 1px solid var(--line); background: var(--blue); }
.code {
  width: min(100%, 440px); padding: 22px; overflow: auto;
  border: 1px solid var(--ink); border-radius: 13px; background: #17211b; color: #d8ff65;
  font: 14px/1.8 ui-monospace, SFMono-Regular, Consolas, monospace;
}
.platform { min-height: 200px; display: flex; flex-direction: column; justify-content: space-between; }
.platform strong { font-size: 32px; }
.platform span { color: var(--muted); }
.seo-links { display: flex; flex-wrap: wrap; gap: 10px; }
.seo-links a { padding: 10px 15px; border: 1px solid var(--line); border-radius: 999px; background: #fff; font-weight: 700; }
.faq { border-top: 1px solid var(--line); }
.faq details { padding: 24px 0; border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-size: 18px; font-weight: 800; }
.faq p { max-width: 760px; color: var(--muted); }
.cta { padding: 55px; border: 1px solid var(--ink); border-radius: 25px; background: var(--lime); }
.cta h2 { max-width: 760px; }
.page-hero { padding: 90px 0 68px; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: clamp(46px, 6vw, 76px); }
.crumb { margin-bottom: 20px; color: var(--green); font-size: 14px; font-weight: 800; }
.spec-table { width: 100%; border-collapse: collapse; background: #fff; }
.spec-table th, .spec-table td { padding: 17px; border: 1px solid var(--line); text-align: left; }
.spec-table th { background: #eef1eb; }
.steps { counter-reset: step; display: grid; gap: 14px; }
.step { position: relative; padding: 25px 25px 25px 75px; border: 1px solid var(--line); border-radius: 15px; background: #fff; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 22px; top: 22px; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--lime); font-weight: 900; }
.tokens { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.swatch { min-height: 140px; padding: 14px; display: flex; align-items: end; border: 1px solid var(--ink); border-radius: 14px; font: 700 12px/1.4 ui-monospace, monospace; }
.component-stage { padding: 32px; border: 1px dashed var(--muted); border-radius: 18px; background: #fff; }
.component-stage + .component-stage { margin-top: 16px; }
.notice { padding: 18px 20px; border-left: 5px solid var(--green); background: #e8f1eb; }
.site-footer { margin-top: var(--space); padding: 62px 0 28px; color: #dce5de; background: #17211b; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 36px; }
.footer-grid h3 { color: #fff; font-size: 17px; }
.footer-grid a, .footer-grid p { display: block; margin: 10px 0; color: #aebbb1; font-size: 14px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 45px; padding-top: 22px; border-top: 1px solid #33443a; color: #91a095; font-size: 13px; }
@media (max-width: 900px) {
  .hero-grid, .grid-4, .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-3, .tokens { grid-template-columns: repeat(2, 1fr); }
  .visual { margin-top: 28px; }
}
@media (max-width: 680px) {
  .container { width: min(100% - 28px, 1180px); }
  .nav-links { display: none; position: absolute; top: 72px; left: 14px; right: 14px; flex-direction: column; align-items: stretch; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }
  .nav-links.open { display: flex; }
  .mobile-toggle { display: block; }
  .hero-grid, .grid-4, .grid-3, .grid-2, .footer-grid, .feature-row, .tokens { grid-template-columns: 1fr; }
  .feature-demo { border-left: 0; }
  .section-head, .footer-bottom { align-items: start; flex-direction: column; }
  .visual img { box-shadow: 9px 9px 0 var(--ink); }
  .cta { padding: 32px 24px; }
  .spec-table { font-size: 13px; }
  .spec-table th, .spec-table td { padding: 10px; }
}