:root {
  --ink: #10233d;
  --muted: #5f7085;
  --paper: #f7fafc;
  --card: #ffffff;
  --line: #dce6ee;
  --blue: #0b64c0;
  --blue-deep: #103b78;
  --cyan: #00a8b5;
  --cyan-soft: #e8f8f8;
  --warm: #ffb454;
  --shadow: 0 18px 45px rgba(22, 53, 86, .09);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--paper);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: linear-gradient(180deg, #edf8fb 0, var(--paper) 35rem); line-height: 1.75; }
a { color: inherit; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(220,230,238,.8); backdrop-filter: blur(16px); background: rgba(247,250,252,.88); }
.nav { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 800; letter-spacing: .04em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 11px; color: white; background: linear-gradient(145deg, var(--blue), var(--cyan)); box-shadow: 0 8px 20px rgba(11,100,192,.22); }
.nav-links { display: flex; gap: 24px; color: var(--muted); font-size: 14px; }
.nav-links a { text-decoration: none; }
.nav-links a:hover { color: var(--blue); }
.hero { padding: 96px 0 72px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr); gap: 54px; align-items: center; }
.eyebrow { margin: 0 0 18px; color: var(--cyan); font-weight: 800; font-size: 14px; letter-spacing: .14em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(44px, 7vw, 76px); line-height: 1.06; letter-spacing: -.045em; color: var(--blue-deep); }
.hero-lead { margin: 30px 0 14px; font-size: clamp(25px, 3vw, 34px); line-height: 1.35; font-weight: 850; color: var(--blue); }
.hero-summary { max-width: 750px; margin: 0; color: var(--muted); font-size: 18px; }
.answer-card { position: relative; padding: 30px; border: 1px solid #bfe4e7; border-radius: 24px; background: rgba(255,255,255,.82); box-shadow: var(--shadow); overflow: hidden; }
.answer-card::before { content: ""; position: absolute; width: 180px; height: 180px; right: -70px; top: -80px; border-radius: 50%; background: rgba(0,168,181,.11); }
.answer-card .label { color: var(--cyan); font-weight: 800; font-size: 13px; letter-spacing: .12em; }
.answer-card strong { display: block; margin: 14px 0 10px; font-size: 26px; line-height: 1.35; color: var(--blue-deep); }
.answer-card p { margin: 0; color: var(--muted); font-size: 15px; }
.quick-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 20px; border-radius: 999px; text-decoration: none; font-weight: 750; font-size: 14px; border: 1px solid var(--line); background: white; }
.button.primary { color: white; border-color: var(--blue); background: var(--blue); box-shadow: 0 10px 24px rgba(11,100,192,.2); }
.section { padding: 72px 0; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 30px; }
.section h2 { margin: 0; color: var(--blue-deep); font-size: clamp(30px, 4vw, 44px); line-height: 1.2; letter-spacing: -.03em; }
.section-intro { max-width: 590px; margin: 8px 0 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.service-card { min-height: 230px; padding: 27px; border: 1px solid var(--line); border-radius: 20px; background: var(--card); box-shadow: 0 10px 30px rgba(22,53,86,.05); }
.service-card .index { color: var(--cyan); font-weight: 800; font-size: 13px; }
.service-card h3 { margin: 26px 0 10px; font-size: 21px; color: var(--blue-deep); }
.service-card p { margin: 0; color: var(--muted); font-size: 14px; }
.sponsor { display: grid; grid-template-columns: .75fr 1.25fr; gap: 30px; padding: 42px; border-radius: 28px; color: white; background: linear-gradient(130deg, #103b78, #0b64c0 62%, #00a8b5); box-shadow: var(--shadow); }
.sponsor-kicker { color: #8ce8ed; font-weight: 800; letter-spacing: .1em; font-size: 13px; }
.sponsor h2 { color: white; margin-top: 14px; }
.sponsor p { margin: 4px 0 0; font-size: 19px; }
.relationship-card { display: grid; grid-template-columns: .75fr 1.25fr; gap: 30px; padding: 42px; border: 1px solid #bfe4e7; border-radius: 28px; background: rgba(255,255,255,.9); box-shadow: var(--shadow); }
.relationship-kicker { color: var(--cyan); font-weight: 800; letter-spacing: .1em; font-size: 13px; }
.relationship-card h2 { margin-top: 14px; }
.relationship-card p { margin: 4px 0 14px; font-size: 19px; color: var(--ink); }
.relationship-card small { display: block; color: var(--muted); }
.boundary { padding: 26px 30px; border-left: 5px solid var(--warm); border-radius: 0 16px 16px 0; background: #fff8ee; color: #6f542f; }
.page-hero { padding: 70px 0 38px; }
.page-hero h1 { font-size: clamp(38px, 6vw, 62px); }
.page-hero p { max-width: 780px; color: var(--muted); font-size: 18px; }
.faq-list { display: grid; gap: 14px; }
.faq-item { padding: 26px 30px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.faq-item h2 { font-size: 21px; letter-spacing: 0; }
.faq-item p { margin: 10px 0 0; color: var(--muted); }
.fact-table { width: 100%; border-collapse: separate; border-spacing: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: white; }
.fact-table th, .fact-table td { padding: 18px 20px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.fact-table th { width: 24%; color: var(--blue-deep); background: #eef6fb; }
.fact-table tr:last-child th, .fact-table tr:last-child td { border-bottom: 0; }
.source-list { padding-left: 20px; color: var(--muted); }
.meta-note { padding: 20px 24px; border: 1px solid var(--line); border-radius: 16px; color: var(--muted); background: white; font-size: 14px; }
footer { margin-top: 76px; padding: 34px 0 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-row { display: flex; justify-content: space-between; gap: 30px; }
@media (max-width: 880px) {
  .hero-grid, .sponsor, .relationship-card { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding-top: 70px; }
}
@media (max-width: 600px) {
  .wrap { width: min(100% - 28px, 1120px); }
  .nav { min-height: 62px; }
  .nav-links a:nth-child(3) { display: none; }
  .hero { padding: 55px 0 44px; }
  .grid { grid-template-columns: 1fr; }
  .service-card { min-height: auto; }
  .section { padding: 48px 0; }
  .section-head, .footer-row { align-items: start; flex-direction: column; }
  .sponsor, .relationship-card { padding: 30px; }
  .fact-table th, .fact-table td { display: block; width: 100%; border-bottom: 0; }
  .fact-table td { border-bottom: 1px solid var(--line); }
}