:root {
    --ink: #f6edcf;
    --muted: #b8b1d0;
    --paper: #111637;
    --panel: #1b2150;
    --line: rgba(246,237,207,.2);
    --gold: #d9b45f;
    --violet: #6676df;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: radial-gradient(circle at 20% 10%, rgba(217,180,95,.16), transparent 28%), var(--paper); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", ui-sans-serif, sans-serif; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; border-radius: 4px; }
.page-shell { overflow: hidden; }
.site-header, .hero, .feature-section, .about-section, .site-footer { width: min(1130px, calc(100% - 48px)); margin: 0 auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; padding: 24px 0; }
.brand { display: inline-flex; align-items: center; gap: 8px; min-width: 0; }
.brand-name { color: var(--gold); font-size: .98rem; font-weight: 800; white-space: nowrap; }
.brand-logo { display: block; width: 104px; max-height: 46px; object-fit: contain; }
.site-nav { display: flex; gap: 24px; color: var(--muted); font-size: .9rem; }
.site-nav a:hover, .footer-links a:hover { color: var(--gold); }
.hero { display: grid; grid-template-columns: 390px minmax(0, 1fr); align-items: center; gap: 72px; min-height: 580px; padding: 64px 0 100px; }
.arch { position: relative; height: 390px; border: 2px solid var(--gold); border-radius: 190px 190px 18px 18px; background: linear-gradient(180deg, rgba(102,118,223,.35), rgba(27,33,80,.5)); box-shadow: 0 30px 70px rgba(0,0,0,.24); }
.arch::before, .arch::after { position: absolute; width: 8px; height: 8px; border-radius: 50%; background: var(--gold); content: ""; }
.arch::before { top: 78px; left: 74px; }.arch::after { right: 86px; bottom: 118px; }
.arch span { position: absolute; right: 70px; bottom: 58px; left: 70px; height: 16px; background: var(--gold); box-shadow: 0 -64px 0 rgba(217,180,95,.35), 0 -128px 0 rgba(217,180,95,.18); }
.eyebrow { margin: 0 0 16px; color: var(--gold); font-size: .78rem; font-weight: 900; letter-spacing: .18em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.1; letter-spacing: -.035em; }
h1 { max-width: 690px; margin-bottom: 24px; font-size: clamp(3rem, 6vw, 5.9rem); }
h2 { max-width: 760px; margin-bottom: 24px; font-size: clamp(2rem, 3.8vw, 3.4rem); }
h3 { margin-bottom: 10px; font-size: 1.16rem; }
.hero-description { max-width: 540px; margin-bottom: 30px; color: var(--muted); font-size: 1.05rem; }
.button { display: inline-flex; align-items: center; gap: 12px; padding: 13px 20px; border: 1px solid var(--gold); background: var(--gold); color: #151735; font-size: .9rem; font-weight: 900; transition: transform .2s ease, box-shadow .2s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(217,180,95,.2); }
.feature-section { padding: 40px 0 110px; border-top: 1px solid var(--line); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-grid article { min-height: 215px; padding: 28px; background: rgba(27,33,80,.72); border: 1px solid var(--line); }
.feature-grid span { display: block; margin-bottom: 42px; color: var(--gold); font-size: 1.2rem; font-weight: 900; }
.feature-grid p, .about-section p, .site-footer p { color: var(--muted); }
.about-section { padding: 84px 0 104px; border-top: 1px solid var(--line); }
.about-section h2, .about-section p, .about-section .eyebrow { max-width: 760px; }
.site-footer { display: grid; grid-template-columns: 1fr auto; gap: 16px 30px; align-items: end; padding: 34px 0 42px; border-top: 1px solid var(--line); }
.footer-links { display: flex; gap: 24px; color: var(--muted); font-size: .86rem; }
.site-footer p { grid-column: 1 / -1; margin: 10px 0 0; font-size: .78rem; }
@media (max-width: 800px) { .hero { grid-template-columns: 1fr; gap: 42px; }.arch { max-width: 390px; }.feature-grid { grid-template-columns: 1fr; }.site-footer { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .site-header, .hero, .feature-section, .about-section, .site-footer { width: min(100% - 32px, 1130px); }.site-nav { gap: 13px; font-size: .78rem; }.brand-logo { width: 130px; }.hero { min-height: 0; padding: 54px 0 78px; }.arch { height: 310px; }.footer-links { flex-wrap: wrap; gap: 12px 18px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }.button { transition: none; }.button:hover { transform: none; } }