:root {
  color-scheme: light;
  --ink: #142423;
  --muted: #5f706e;
  --paper: #f7f8f3;
  --white: #ffffff;
  --forest: #102b2a;
  --green: #c8f36a;
  --line: #dce4df;
  --blue: #5d87f5;
  --gold: #e7b854;
  --coral: #e9816c;
  --radius: 22px;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); }
a { color: inherit; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 99; background: var(--white); padding: 12px 16px; border-radius: 10px; }
.skip-link:focus { top: 12px; }

.site-header { position: sticky; top: 0; z-index: 20; min-height: 76px; display: flex; align-items: center; gap: 30px; padding: 12px clamp(20px, 5vw, 80px); background: rgba(247, 248, 243, .94); border-bottom: 1px solid rgba(20, 36, 35, .08); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; gap: 11px; margin-right: auto; text-decoration: none; }
.brand-mark { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 13px; background: var(--forest); color: var(--green); font-size: 18px; font-weight: 800; }
.brand strong, .brand small { display: block; }
.brand strong { letter-spacing: .08em; }
.brand small { margin-top: 2px; color: var(--muted); font-size: 10px; }
.main-nav { display: flex; gap: 28px; }
.main-nav a, .footer-links a { text-decoration: none; color: #405250; font-size: 14px; }
.main-nav a:hover, .main-nav a:focus-visible, .footer-links a:hover { color: #0f5c51; }

.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 23px; border: 1px solid var(--forest); border-radius: 14px; background: var(--forest); color: var(--white); text-decoration: none; font-weight: 700; box-shadow: 0 8px 24px rgba(16, 43, 42, .14); transition: transform .18s ease, box-shadow .18s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(16, 43, 42, .2); }
.button:focus-visible, a:focus-visible { outline: 3px solid rgba(93, 135, 245, .45); outline-offset: 3px; }
.button-small { min-height: 40px; padding: 0 18px; font-size: 14px; }
.button-ghost { background: transparent; color: var(--forest); box-shadow: none; }
.button-dark { background: var(--green); border-color: var(--green); color: var(--forest); }

.hero { min-height: 710px; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr); align-items: center; gap: clamp(40px, 6vw, 100px); padding: 80px clamp(24px, 7vw, 110px) 94px; overflow: hidden; }
.hero-copy { max-width: 720px; }
.eyebrow { margin: 0 0 18px; color: #35716b; font-size: 12px; font-weight: 800; letter-spacing: .18em; }
h1 { margin: 0; font-size: clamp(42px, 5.4vw, 76px); line-height: 1.08; letter-spacing: -.045em; }
.hero-lead { max-width: 660px; margin: 28px 0 0; color: var(--muted); font-size: 18px; line-height: 1.9; }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; }
.privacy-note { display: flex; align-items: center; gap: 9px; margin-top: 22px; color: #63726f; font-size: 12px; }
.privacy-note span { color: #62a34f; font-size: 9px; }

.hero-panel { position: relative; min-height: 510px; border-radius: 40px; background: var(--forest); overflow: hidden; box-shadow: 0 36px 70px rgba(10, 39, 37, .2); }
.hero-panel::before { content: ""; position: absolute; width: 250px; height: 250px; right: -90px; top: -70px; border-radius: 50%; background: rgba(200, 243, 106, .18); filter: blur(2px); }
.hero-panel::after { content: ""; position: absolute; width: 180px; height: 180px; left: -60px; bottom: -60px; border-radius: 50%; background: rgba(93, 135, 245, .18); }
.orbit { position: absolute; inset: 50%; border: 1px solid rgba(255,255,255,.15); border-radius: 50%; transform: translate(-50%, -50%); }
.orbit-one { width: 360px; height: 360px; }
.orbit-two { width: 240px; height: 240px; border-style: dashed; }
.hub-card { position: absolute; left: 50%; top: 50%; width: 190px; min-height: 145px; transform: translate(-50%, -50%); display: flex; flex-direction: column; justify-content: center; padding: 24px; border: 1px solid rgba(255,255,255,.17); border-radius: 24px; background: rgba(255,255,255,.1); color: white; backdrop-filter: blur(12px); }
.hub-label { width: fit-content; margin-bottom: 12px; padding: 5px 9px; border-radius: 100px; background: var(--green); color: var(--forest); font-size: 10px; font-weight: 800; }
.hub-card strong { font-size: 24px; }
.hub-card small { margin-top: 8px; color: #bdd0cc; line-height: 1.5; }
.float-card { position: absolute; display: flex; align-items: center; gap: 10px; padding: 13px 16px; border-radius: 15px; background: white; box-shadow: 0 16px 30px rgba(0,0,0,.2); font-size: 13px; }
.float-card span { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 9px; background: #eef2e9; color: #507069; font-size: 10px; }
.card-review { left: 8%; top: 15%; }
.card-field { right: 7%; top: 28%; }
.card-dialog { left: 14%; bottom: 13%; }

.trust-strip { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0 clamp(24px, 7vw, 110px); padding: 25px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust-strip div { padding: 5px 28px; border-right: 1px solid var(--line); }
.trust-strip div:last-child { border-right: 0; }
.trust-strip strong, .trust-strip span { display: block; }
.trust-strip span { margin-top: 6px; color: var(--muted); font-size: 13px; }

.section { padding: 110px clamp(24px, 7vw, 110px); }
.section-heading { max-width: 760px; margin-bottom: 50px; }
.section-heading h2, .security-copy h2, .privacy-section h2 { margin: 0; font-size: clamp(32px, 4vw, 52px); line-height: 1.2; letter-spacing: -.035em; }
.section-heading > p:last-child { color: var(--muted); line-height: 1.8; }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.capability-card { position: relative; min-height: 390px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); overflow: hidden; }
.capability-card::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 7px; background: var(--accent); }
.accent-blue { --accent: var(--blue); }
.accent-green { --accent: #72b46b; }
.accent-gold { --accent: var(--gold); }
.accent-coral { --accent: var(--coral); }
.card-number { color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.capability-card h3 { margin: 72px 0 16px; font-size: 27px; }
.capability-card p { min-height: 90px; color: var(--muted); line-height: 1.75; font-size: 14px; }
.capability-card ul { margin: 24px 0 0; padding: 18px 0 0; border-top: 1px solid var(--line); list-style: none; }
.capability-card li { margin: 9px 0; font-size: 13px; }
.capability-card li::before { content: "—"; margin-right: 8px; color: var(--accent); }

.process-section { background: var(--forest); color: white; }
.heading-light .eyebrow { color: var(--green); }
.process-list { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; counter-reset: steps; }
.process-list li { min-height: 260px; padding: 25px; border-left: 1px solid rgba(255,255,255,.18); }
.process-list li > span { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; color: var(--green); font-weight: 700; }
.process-list div { margin-top: 78px; }
.process-list strong { font-size: 18px; }
.process-list p { color: #b9cac7; font-size: 14px; line-height: 1.8; }

.security-section { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(40px, 8vw, 120px); align-items: center; }
.security-copy > p:not(.eyebrow) { max-width: 680px; color: var(--muted); line-height: 1.85; }
.security-points { margin-top: 38px; }
.security-points > div { display: flex; align-items: flex-start; gap: 14px; margin: 20px 0; }
.security-points > div > span { width: 28px; height: 28px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: #e6f1d2; color: #466d32; font-weight: 800; }
.security-points p { margin: 0; }
.security-points strong, .security-points small { display: block; }
.security-points small { margin-top: 5px; color: var(--muted); line-height: 1.6; }
.boundary-card { padding: 38px; border-radius: 28px; background: #e9efe9; }
.boundary-card > p { margin: 0; color: #58716d; font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.boundary-card h3 { margin: 18px 0 28px; font-size: 26px; }
.boundary-card ul { margin: 0; padding: 0; list-style: none; }
.boundary-card li { padding: 15px 0; border-top: 1px solid #cfdbd2; font-size: 14px; }
.boundary-card li::before { content: "×"; margin-right: 11px; color: #bd5d52; font-weight: 800; }

.privacy-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px 80px; background: #e6eecf; }
.privacy-grid { display: grid; gap: 12px; }
.privacy-grid p { margin: 0; padding: 18px 0; border-bottom: 1px solid rgba(16,43,42,.16); }
.privacy-grid strong, .privacy-grid span { display: block; }
.privacy-grid strong { margin-bottom: 6px; }
.privacy-grid span { color: #50615e; font-size: 13px; line-height: 1.7; }
.privacy-section .button { grid-column: 2; width: fit-content; }

.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 26px; align-items: center; padding: 42px clamp(24px, 7vw, 110px); background: #0b2221; color: white; }
.footer-brand .brand-mark { background: var(--green); color: var(--forest); }
.footer-brand small { color: #92aaa6; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: #c5d2d0; }
.site-footer > p { grid-column: 1 / -1; margin: 0; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); color: #829995; font-size: 12px; }

@media (max-width: 1020px) {
  .main-nav { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 60px; }
  .hero-panel { min-height: 440px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .security-section { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-header { min-height: 66px; padding: 10px 16px; }
  .brand small { display: none; }
  .site-header .button-small { padding: 0 13px; }
  .hero { display: block; padding: 48px 20px 64px; }
  h1 { font-size: 42px; }
  .hero-lead { font-size: 16px; }
  .hero-actions { flex-direction: column; }
  .hero-panel { min-height: 380px; margin-top: 48px; border-radius: 28px; }
  .orbit-one { width: 300px; height: 300px; }
  .card-field { right: 4%; }
  .trust-strip { grid-template-columns: 1fr; margin: 0 20px; }
  .trust-strip div { padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .trust-strip div:last-child { border-bottom: 0; }
  .section { padding: 74px 20px; }
  .capability-grid, .process-list { grid-template-columns: 1fr; }
  .capability-card { min-height: 340px; }
  .process-list li { min-height: 210px; }
  .process-list div { margin-top: 48px; }
  .privacy-section { grid-template-columns: 1fr; }
  .privacy-section .button { grid-column: 1; width: 100%; }
  .site-footer { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}