:root{--red:#E63946;--red-bright:#FF4D5A;--red-dark:#C1121F;--red-soft:#fff1f2;--ink:#1A1A1A;--text:#333;--muted:#777;--line:rgba(230,57,70,.15);--line-strong:rgba(230,57,70,.35);--bg:#fff;--bg2:#f7f7f7;--shadow:0 12px 36px rgba(0,0,0,.08);--red-shadow:0 10px 28px rgba(230,57,70,.18);--max:1280px;--header:72px}
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@media (max-width:700px){:root{--header:64px}.nav-shell,.wrap,.footer-shell{padding-left:15px;padding-right:15px}.site-header{height:var(--header)}.nav-shell{justify-content:space-between}.brand{position:absolute;left:50%;transform:translateX(-50%);max-width:130px}.brand-logo{max-width:120px;max-height:34px}.brand-fallback{font-size:18px}.nav-actions .primary-small{padding:0 14px}.section{padding:54px 0}.page-hero{padding:48px 0 32px}.page-hero p{font-size:16px}.home-hero{padding:28px 0}.hero-grid{display:flex;flex-direction:column}.hero-copy{order:1}.home-visual{order:2;min-height:260px}.hero-copy h1{font-size:44px}.recommend-list{order:3}.grid-2,.grid-3,.grid-4,.prose-grid{grid-template-columns:1fr}.section-title{align-items:start;flex-direction:column}.timeline article{grid-template-columns:1fr;gap:8px}.big-index{grid-template-columns:64px 1fr}.big-index .number{font-size:48px}.track{grid-auto-columns:80vw}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}.search-panel{top:0;bottom:0;overflow-y:auto}.search-shell{padding-top:18px}.search-results{grid-template-columns:1fr 1fr}.mobile-bottom-nav{position:fixed;display:grid;grid-template-columns:repeat(5,1fr);left:0;right:0;bottom:0;z-index:1000;background:rgba(255,255,255,.97);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom-nav a{min-height:54px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:900;color:#666}.mobile-bottom-nav a.is-active{color:var(--red)}.site-footer{padding-bottom:calc(96px + env(safe-area-inset-bottom))}.panel-head{height:64px}.panel-scroll{height:calc(100vh - 64px)}.topic-row{margin-right:-15px;padding-right:15px}.btn-primary,.btn-secondary{min-height:46px}.home-visual img{object-fit:contain}.app-device{min-height:300px}}
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