:root {
    --ink: #2e1511;
    --muted: #84625b;
    --paper: #fff0ea;
    --card: #fffaf7;
    --line: #f0c8bd;
    --hot: #f04a24;
    --ember: #ff9c2f;
    --deep: #9d211b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: linear-gradient(180deg, #fff7f2, var(--paper)); color: var(--ink); font-family: "PingFang SC", "Microsoft YaHei", ui-sans-serif, sans-serif; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid var(--hot); outline-offset: 4px; border-radius: 6px; }
.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(--ink); 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(--hot); }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) 390px; align-items: center; gap: 74px; min-height: 570px; padding: 60px 0 96px; }
.eyebrow { margin: 0 0 16px; color: var(--deep); font-size: .78rem; font-weight: 900; letter-spacing: .18em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.04em; }
h1 { max-width: 640px; margin-bottom: 24px; font-size: clamp(3.1rem, 6.2vw, 6rem); }
h2 { max-width: 730px; margin-bottom: 24px; font-size: clamp(2rem, 3.8vw, 3.5rem); }
h3 { margin-bottom: 10px; font-size: 1.16rem; }
.hero-description { max-width: 500px; margin-bottom: 30px; color: var(--muted); font-size: 1.05rem; }
.button { display: inline-flex; align-items: center; gap: 12px; padding: 13px 20px; border-radius: 999px; background: linear-gradient(90deg, var(--hot), var(--ember)); color: #fff; font-size: .9rem; font-weight: 900; box-shadow: 0 16px 30px rgba(240,74,36,.24); transition: transform .2s ease; }
.button:hover { transform: translateY(-2px) scale(1.02); }
.chapter-meter { display: grid; gap: 15px; padding: 28px; border-radius: 30px; background: var(--ink); box-shadow: 0 28px 60px rgba(157,33,27,.2); }
.chapter-meter span { display: block; padding: 18px 20px; border-radius: 18px; background: linear-gradient(90deg, var(--hot), transparent); color: #fff8f2; font-weight: 900; letter-spacing: .08em; }
.chapter-meter span:nth-child(2) { width: 88%; background: linear-gradient(90deg, var(--ember), transparent); }
.chapter-meter span:nth-child(3) { width: 78%; }
.chapter-meter span:nth-child(4) { width: 68%; background: linear-gradient(90deg, #d53125, transparent); }
.feature-section { padding: 40px 0 110px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-grid article { min-height: 215px; padding: 28px; background: var(--card); border: 1px solid var(--line); border-radius: 8px; box-shadow: 8px 8px 0 #ffd8ca; }
.feature-grid span { display: block; margin-bottom: 42px; color: var(--hot); 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: 780px) { .hero { grid-template-columns: 1fr; gap: 42px; }.chapter-meter { max-width: 430px; }.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: 128px; }.hero { min-height: 0; padding: 52px 0 78px; }.chapter-meter { padding: 20px; }.footer-links { flex-wrap: wrap; gap: 12px 18px; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }.button { transition: none; }.button:hover { transform: none; } }