:root {
  --ink: #101820;
  --paper: #f4f2ec;
  --acid: #ffcf4a;
  --muted: #60666a;
  --line: rgba(16, 24, 32, 0.16);
  --white: #fffdf8;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }

.site-header {
  width: min(calc(100% - 48px), 1240px);
  height: 84px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 760; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; background: var(--ink); color: var(--acid); border-radius: 10px; }
.brand-mark svg { width: 24px; height: 24px; overflow: visible; }
.brand-mark path, .visual-core path { fill: none; stroke: currentColor; stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; }
nav { display: flex; gap: 34px; }
nav a { font-size: 14px; color: var(--muted); transition: color .2s ease; }
nav a:hover { color: var(--ink); }

.hero {
  width: min(calc(100% - 48px), 1240px);
  min-height: 680px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  align-items: center;
  gap: 72px;
  padding: 80px 0 96px;
}
.eyebrow, .section-index, .product-kicker { margin: 0; font-size: 12px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow { color: #906900; }
.hero h1 { margin: 24px 0 28px; font-size: clamp(50px, 6.5vw, 86px); line-height: 1.06; letter-spacing: -.055em; }
.hero h1 span { position: relative; z-index: 1; }
.hero h1 span::after { content: ""; position: absolute; left: -.03em; right: -.03em; bottom: .08em; height: .26em; z-index: -1; background: var(--acid); }
.hero-lead { max-width: 650px; margin: 0; color: var(--muted); font-size: 18px; line-height: 1.8; }
.primary-link, .secondary-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 50px; margin-top: 36px; padding: 15px 18px; border: 1px solid var(--ink); font-size: 14px; font-weight: 700; transition: background .2s, color .2s; }
.primary-link:hover, .secondary-link:hover { background: var(--ink); color: var(--white); }

.hero-visual { position: relative; aspect-ratio: 1; display: grid; place-items: center; overflow: hidden; background: var(--ink); border-radius: 50%; }
.visual-core { width: 42%; aspect-ratio: 1; display: grid; place-items: center; z-index: 3; border-radius: 50%; background: var(--acid); color: var(--ink); }
.visual-core svg { width: 58%; height: 58%; overflow: visible; }
.orbit { position: absolute; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; }
.orbit-one { width: 76%; height: 76%; }
.orbit-two { width: 106%; height: 38%; transform: rotate(-26deg); }
.visual-note { position: absolute; color: var(--white); font-size: 10px; letter-spacing: .22em; font-weight: 800; }
.note-one { top: 15%; left: 44%; }
.note-two { bottom: 18%; left: 12%; transform: rotate(26deg); }
.note-three { right: 7%; top: 49%; transform: rotate(90deg); }

.section { width: min(calc(100% - 48px), 1240px); margin: 0 auto; padding: 110px 0; display: grid; grid-template-columns: 230px 1fr; border-top: 1px solid var(--line); gap: 48px; }
.section-index { color: var(--muted); }
.section-content > h2 { max-width: 840px; margin: -10px 0 30px; font-size: clamp(34px, 5vw, 62px); line-height: 1.15; letter-spacing: -.045em; }
.section-content > p { max-width: 760px; color: var(--muted); font-size: 17px; line-height: 1.9; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 64px; border-top: 1px solid var(--line); }
.principles div { min-height: 150px; padding: 28px 26px 20px 0; border-right: 1px solid var(--line); }
.principles div + div { padding-left: 26px; }
.principles div:last-child { border-right: 0; }
.principles strong, .principles span { display: block; }
.principles strong { font-size: 24px; }
.principles span { margin-top: 12px; color: var(--muted); font-size: 14px; line-height: 1.6; }

.product-card { display: grid; grid-template-columns: .82fr 1.18fr; overflow: hidden; background: var(--ink); color: var(--white); }
.product-icon { min-height: 480px; padding: 44px; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr auto 1fr; gap: 12px; background: var(--acid); color: var(--ink); }
.product-icon span { font-size: clamp(60px, 8vw, 112px); font-weight: 850; line-height: .9; }
.product-icon span:nth-child(3) { grid-column: 2; text-align: right; align-self: end; }
.product-icon i { grid-column: 1 / 3; text-align: center; font-size: 44px; font-style: normal; }
.product-icon b { grid-column: 1 / 3; align-self: end; font-size: 30px; }
.product-copy { padding: 58px; display: flex; flex-direction: column; align-items: flex-start; }
.product-kicker { color: var(--acid); }
.product-copy h2 { margin: 24px 0; font-size: clamp(42px, 5vw, 70px); line-height: .98; letter-spacing: -.05em; }
.product-copy > p:not(.product-kicker) { max-width: 550px; color: #bcc2c5; font-size: 16px; line-height: 1.8; }
.product-links { display: flex; gap: 24px; margin-top: auto; padding-top: 36px; }
.product-links a { padding-bottom: 7px; border-bottom: 1px solid var(--acid); color: var(--acid); font-size: 14px; }
.more-products { margin-top: 24px !important; font-size: 14px !important; }

.contact-content { padding-bottom: 20px; }
.contact-content > p { max-width: 640px; }

footer { width: min(calc(100% - 48px), 1240px); margin: 0 auto; padding: 42px 0 54px; display: flex; align-items: flex-end; justify-content: space-between; border-top: 1px solid var(--line); }
.footer-brand { display: flex; align-items: center; gap: 13px; }
.footer-brand strong, .footer-brand small { display: block; }
.footer-brand strong { font-size: 14px; }
.footer-brand small { margin-top: 5px; color: var(--muted); font-size: 11px; }
footer p { margin: 0; color: var(--muted); font-size: 12px; }

@media (prefers-reduced-motion: no-preference) {
  .orbit-one { animation: pulse 4s ease-in-out infinite; }
  .orbit-two { animation: orbit 14s linear infinite; }
  @keyframes pulse { 50% { transform: scale(.94); opacity: .55; } }
  @keyframes orbit { to { transform: rotate(334deg); } }
}

@media (max-width: 820px) {
  .site-header { width: min(calc(100% - 32px), 1240px); height: 72px; }
  nav { gap: 18px; }
  nav a:first-child { display: none; }
  .hero { width: min(calc(100% - 32px), 1240px); min-height: auto; grid-template-columns: 1fr; gap: 52px; padding: 64px 0 72px; }
  .hero h1 { font-size: clamp(44px, 12vw, 68px); }
  .hero-visual { width: min(100%, 540px); justify-self: center; }
  .section { width: min(calc(100% - 32px), 1240px); grid-template-columns: 1fr; gap: 36px; padding: 78px 0; }
  .section-content > h2 { margin-top: 0; }
  .product-card { grid-template-columns: 1fr; }
  .product-icon { min-height: 360px; }
  .product-copy { min-height: 470px; padding: 40px; }
  footer { width: min(calc(100% - 32px), 1240px); align-items: flex-start; flex-direction: column; gap: 28px; }
}

@media (max-width: 560px) {
  .brand { font-size: 15px; }
  nav a { font-size: 13px; }
  .hero-lead { font-size: 16px; }
  .principles { grid-template-columns: 1fr; }
  .principles div, .principles div + div { min-height: auto; padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .product-icon { min-height: 310px; padding: 30px; }
  .product-copy { min-height: 440px; padding: 32px 26px; }
  .product-links { gap: 18px; }
}