:root {
  --ink: #1c1c38;
  --muted: #6e6d86;
  --purple: #7662d5;
  --purple-dark: #493c9f;
  --lavender: #eeeaff;
  --coral: #ff856f;
  --mint: #8ddbc9;
  --line: #e9e7f2;
  --paper: #fbfaff;
  --white: #ffffff;
  --shadow: 0 18px 55px rgba(57, 42, 127, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
}
a { color: var(--purple-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(251, 250, 255, .86);
  border-bottom: 1px solid rgba(233, 231, 242, .86);
  backdrop-filter: blur(18px);
}
.nav {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto; min-height: 72px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 750; letter-spacing: .04em; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 36px; height: 36px; display: block; border-radius: 10px;
  box-shadow: 0 8px 18px rgba(118, 98, 213, .24);
}
.nav-links { display: flex; align-items: center; gap: 22px; font-size: 14px; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--purple-dark); text-decoration: none; }
.nav-links a.button, .nav-links a.button:hover { color: white; }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 18px; border-radius: 14px;
  color: white; background: var(--purple); font-weight: 650;
  box-shadow: 0 10px 24px rgba(118, 98, 213, .22);
}
.button:hover { color: white; background: var(--purple-dark); text-decoration: none; }
.button.secondary { color: var(--purple-dark); background: var(--lavender); box-shadow: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.hero {
  position: relative; overflow: hidden;
  padding: 92px 0 84px;
  background: radial-gradient(circle at 84% 8%, rgba(255, 133, 111, .28), transparent 28%),
              radial-gradient(circle at 12% 30%, rgba(141, 219, 201, .25), transparent 30%),
              linear-gradient(135deg, #29275a 0%, #5247a7 58%, #8170df 100%);
  color: white;
}
.hero::before, .hero::after { content: ""; position: absolute; border-radius: 999px; border: 1px solid rgba(255,255,255,.17); }
.hero::before { width: 330px; height: 330px; right: -90px; top: -110px; }
.hero::after { width: 190px; height: 190px; right: 90px; bottom: -100px; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: center; }
.eyebrow { margin: 0 0 16px; color: #d9d4ff; font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.25; margin: 0; }
.hero h1 { max-width: 660px; font-size: clamp(38px, 6vw, 68px); letter-spacing: -.04em; }
.hero-copy { max-width: 590px; margin: 22px 0 30px; color: #eeecff; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .button { background: white; color: var(--purple-dark); box-shadow: none; }
.hero .button.secondary { color: white; background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.24); }
.island-card {
  min-height: 330px; padding: 28px; display: flex; flex-direction: column; justify-content: space-between;
  border: 1px solid rgba(255,255,255,.22); border-radius: 30px;
  background: linear-gradient(160deg, rgba(255,255,255,.22), rgba(255,255,255,.07));
  box-shadow: 0 28px 70px rgba(19, 12, 70, .25); backdrop-filter: blur(10px);
}
.island-logo { display: grid; place-items: center; padding: 8px 0 24px; }
.island-logo img { width: min(220px, 70%); height: auto; filter: drop-shadow(0 22px 40px rgba(19, 12, 70, .35)); }
.island-label { display: flex; align-items: end; justify-content: space-between; gap: 16px; }
.island-label strong { font-size: 28px; }
.island-label span { color: #dedaff; font-size: 13px; }
.section { padding: 84px 0; }
.section.soft { background: #f1effd; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 30px; }
.section-heading h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -.03em; }
.section-heading p { max-width: 560px; margin: 0; color: var(--muted); }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature-card { min-height: 210px; padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: var(--white); box-shadow: var(--shadow); }
.feature-icon { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 20px; border-radius: 14px; color: white; font-size: 20px; background: linear-gradient(145deg, var(--coral), var(--purple)); }
.feature-card h3 { font-size: 18px; }
.feature-card p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { padding: 24px; border-radius: 22px; background: var(--white); border: 1px solid var(--line); }
.step-number { color: var(--coral); font-size: 14px; font-weight: 800; letter-spacing: .12em; }
.step h3 { margin-top: 22px; font-size: 20px; }
.step p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.protocol-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.protocol-card { padding: 24px; border-radius: 22px; background: var(--white); border: 1px solid var(--line); }
.protocol-card h3 { font-size: 19px; }
.protocol-card p { min-height: 72px; margin: 10px 0 20px; color: var(--muted); font-size: 14px; }
.site-footer { padding: 36px 0 46px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }
.footer-grid { display: flex; justify-content: space-between; gap: 20px; }
.legal-page { padding: 64px 0 90px; }
.legal-card { max-width: 860px; margin: 0 auto; padding: clamp(24px, 5vw, 58px); border: 1px solid var(--line); border-radius: 28px; background: var(--white); box-shadow: var(--shadow); }
.legal-card h1 { font-size: clamp(30px, 5vw, 48px); letter-spacing: -.04em; }
.legal-meta { margin: 12px 0 38px; color: var(--muted); font-size: 14px; }
.legal-card h2 { margin: 36px 0 10px; font-size: 22px; }
.legal-card h3 { margin: 22px 0 8px; font-size: 17px; }
.legal-card p { margin: 9px 0; }
.legal-card ul, .legal-card ol { margin: 10px 0; padding-left: 1.4em; }
.legal-card li { margin: 6px 0; }
.data-table { width: 100%; margin: 16px 0; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { padding: 12px 10px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.data-table th { color: var(--purple-dark); background: #f7f5ff; }
.notice { margin: 22px 0; padding: 16px 18px; border-left: 4px solid var(--coral); border-radius: 0 14px 14px 0; color: #554c62; background: #fff5f2; }
.back-link { display: inline-flex; margin-bottom: 24px; color: var(--purple-dark); font-weight: 650; }@media (max-width: 820px) {
  .nav-links a:not(.button) { display: none; }
  .hero { padding: 68px 0 58px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .protocol-list, .steps { grid-template-columns: 1fr; }
  .section { padding: 62px 0; }
}
@media (max-width: 520px) {
  .container, .nav { width: min(100% - 28px, 1120px); }
  .feature-grid { grid-template-columns: 1fr; }
  .hero-copy { font-size: 16px; }
  .footer-grid { flex-direction: column; }
  .legal-page { padding: 32px 0 56px; }
  .data-table { display: block; overflow-x: auto; white-space: nowrap; }
}