:root {
  color-scheme: dark;
  --bg: #071521;
  --panel: rgba(13, 34, 54, .82);
  --panel-strong: #0c2943;
  --text: #f4fbff;
  --muted: #a7bfd1;
  --accent: #1684ff;
  --accent-soft: #8bc5ff;
  --green: #63e6a3;
  --line: rgba(139, 197, 255, .2);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(circle at 10% 0%, rgba(22,132,255,.25), transparent 30%), linear-gradient(180deg, #081c2e, var(--bg) 72%, #04101a);
  font-family: "Segoe UI", "PingFang TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.75;
}
a { color: var(--accent-soft); }
.wrap { width: min(1120px, calc(100% - 32px)); margin: auto; padding: 24px 0 60px; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: .04em; }
.brand img { width: 42px; height: 42px; border-radius: 12px; box-shadow: 0 0 26px rgba(22,132,255,.55); }
.links { display: flex; gap: 18px; flex-wrap: wrap; font-size: .92rem; }
.links a { color: var(--muted); text-decoration: none; }
.links a:hover { color: var(--text); }
.hero, .card { border: 1px solid var(--line); border-radius: 26px; background: var(--panel); box-shadow: 0 22px 60px rgba(0,0,0,.3); backdrop-filter: blur(10px); }
.hero { position: relative; overflow: hidden; padding: 52px 46px; min-height: 455px; background: linear-gradient(110deg, rgba(7,25,42,.98), rgba(7,25,42,.7)), radial-gradient(circle at 88% 20%, rgba(22,132,255,.35), transparent 28%); }
.hero::after { content: ""; position: absolute; width: 360px; height: 360px; right: -100px; bottom: -160px; border: 1px solid rgba(139,197,255,.35); border-radius: 50%; box-shadow: 0 0 0 26px rgba(139,197,255,.06), 0 0 0 52px rgba(139,197,255,.04); }
.hero-copy { position: relative; z-index: 1; max-width: 680px; }
.eyebrow { margin: 0 0 10px; color: var(--accent-soft); font-size: .82rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(2.45rem, 6vw, 4.9rem); line-height: 1.05; letter-spacing: -.05em; }
.tagline { margin: 14px 0 0; font-size: clamp(1.35rem, 3vw, 2rem); font-weight: 750; line-height: 1.35; }
.lead { margin: 16px 0 0; color: #c8ddea; font-size: 1.06rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 0 18px; border-radius: 999px; color: #031321; background: linear-gradient(135deg, #72bdff, #1684ff); box-shadow: 0 10px 26px rgba(22,132,255,.28); text-decoration: none; font-weight: 800; }
.button.alt { color: var(--text); background: rgba(139,197,255,.1); border: 1px solid rgba(139,197,255,.28); box-shadow: none; }
.icon-mark { position: absolute; z-index: 1; right: 72px; top: 92px; display: grid; place-items: center; width: 150px; height: 150px; border-radius: 36px; background: rgba(255,255,255,.95); box-shadow: 0 0 60px rgba(22,132,255,.4); transform: rotate(4deg); }
.icon-mark img { width: 116px; height: 116px; }
.summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 20px; }
.summary .card { padding: 18px 20px; }
.summary strong { display: block; font-size: 1.05rem; }
.summary span { color: var(--muted); font-size: .9rem; }
.section { margin-top: 38px; }
.section-heading { margin-bottom: 16px; }
.section-heading h2 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.35rem); letter-spacing: -.03em; }
.section-heading p { max-width: 680px; margin: 5px 0 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.grid .card { grid-column: span 2; padding: 24px; }
.grid .wide { grid-column: span 3; }
.card h3 { margin: 0 0 8px; font-size: 1.2rem; }
.card p, .card li { color: #c8ddea; }
.card ul { margin: 0; padding-left: 1.2rem; }
.tick { color: var(--green); font-weight: 900; }
.cta { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 20px; padding: 27px 30px; border: 1px solid rgba(22,132,255,.35); border-radius: 24px; background: linear-gradient(115deg, rgba(15,75,122,.7), rgba(9,35,57,.8)); }
.cta h2 { margin: 0 0 5px; }
.cta p { margin: 0; color: #bdd5e6; }
.footer { margin: 20px 0 0; color: var(--muted); text-align: center; font-size: .9rem; }
.page { width: min(900px, calc(100% - 32px)); margin: auto; padding: 24px 0 60px; }
.article { padding: 32px; }
.article h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
.article h2 { margin: 30px 0 9px; padding-left: 13px; border-left: 3px solid var(--accent); font-size: 1.25rem; }
.article .meta { color: var(--muted); }
.article li, .article p { color: #c8ddea; }
.notice { margin-top: 26px; padding: 15px 17px; border-left: 4px solid var(--accent); border-radius: 12px; background: rgba(22,132,255,.1); color: var(--muted); }
pre { overflow: auto; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: rgba(0,0,0,.18); white-space: pre-wrap; color: #d8edff; }
@media (max-width: 820px) { .icon-mark { right: 28px; top: 28px; width: 94px; height: 94px; border-radius: 24px; } .icon-mark img { width: 72px; height: 72px; } .hero { padding: 36px 24px; min-height: 535px; } .grid { grid-template-columns: 1fr; } .grid .card, .grid .wide { grid-column: span 1; } .summary { grid-template-columns: 1fr; } .cta, .nav { align-items: flex-start; flex-direction: column; } }
@media (max-width: 520px) { .wrap, .page { width: min(100% - 20px, 900px); padding-top: 14px; } .article { padding: 21px 17px; border-radius: 18px; } .links { gap: 12px; } }