:root{color-scheme:light;--ink:#10264a;--muted:#60728e;--line:#dce5f2;--soft:#f4f7fc;--blue:#1f5be2;--red:#e60012;--yellow:#ffd400}*{box-sizing:border-box}body{margin:0;background:#f4f7fc;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}.site-header{height:76px;padding:0 max(24px,calc((100% - 1200px)/2));display:flex;align-items:center;justify-content:space-between;gap:24px;background:#fff;border-top:3px solid var(--yellow);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}.brand-mark{width:44px;height:44px;border-radius:12px;background:var(--yellow);display:grid;place-items:center;color:#111;font-size:20px;font-weight:950}.brand b,.brand small{display:block}.brand b{font-size:19px}.brand small{color:var(--muted);font-size:12px}.site-header nav{display:flex;gap:22px}.site-header nav a{color:#3c4d68;text-decoration:none;font-weight:750}.site-header nav a:hover{color:var(--blue)}main{max-width:1200px;margin:0 auto;padding:36px 24px 64px}.breadcrumbs{display:flex;align-items:center;gap:8px;margin-bottom:22px;color:#72819a;font-size:14px}.breadcrumbs a{color:#3b66b2;text-decoration:none}.gallery-hero{display:flex;align-items:end;justify-content:space-between;gap:32px;padding:30px 34px;background:linear-gradient(135deg,#eef5ff 0%,#fffdf0 100%);border:1px solid #d5e2f4;border-radius:18px}.eyebrow{margin:0 0 8px;color:var(--blue);font-size:13px;font-weight:900;letter-spacing:.08em}h1{margin:0;font-size:clamp(34px,5vw,56px);line-height:1.12;letter-spacing:-.025em}.gallery-hero p:not(.eyebrow){max-width:760px;margin:12px 0 0;color:var(--muted)}.primary-button,.secondary-button{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 22px;border-radius:12px;font-weight:850;text-decoration:none;text-align:center}.primary-button{background:var(--red);color:#fff;box-shadow:0 10px 22px rgba(230,0,18,.15)}.secondary-button{border:1px solid #b9c9e2;background:#fff;color:#244f9c}.drawing-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:24px}.drawing-card{min-width:0;overflow:hidden;border:1px solid var(--line);border-radius:15px;background:#fff;color:var(--ink);text-decoration:none;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.drawing-card:hover{transform:translateY(-2px);border-color:#9db9e7;box-shadow:0 12px 26px rgba(28,65,120,.1)}.drawing-cover{display:block;aspect-ratio:1;background:#fbfaf7;border-bottom:1px solid #edf1f6}.drawing-cover img{width:100%;height:100%;display:block;object-fit:contain}.drawing-card-copy{display:grid;grid-template-columns:1fr auto;gap:4px 10px;padding:14px 15px}.drawing-card-copy b{grid-column:1/-1;white-space:normal;overflow-wrap:anywhere;line-height:1.35;font-size:17px}.drawing-card-copy span{color:var(--muted);font-size:13px}.drawing-card-copy em{font-style:normal;color:#13834b;background:#e9fbf1;border-radius:999px;padding:1px 8px;font-size:12px;font-weight:750}.info-strip{display:flex;align-items:center;gap:18px;margin-top:22px;padding:17px 20px;background:#fff;border:1px solid var(--line);border-radius:14px}.info-strip span{color:var(--muted);font-size:14px}.detail-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(420px,.9fr);gap:34px;align-items:start}.detail-media,.detail-copy,.related-links{background:#fff;border:1px solid var(--line);border-radius:18px}.detail-media{overflow:hidden}.detail-cover{display:block;width:100%;aspect-ratio:1;object-fit:contain;background:#fbfaf7}.detail-thumbs{display:grid;grid-template-columns:repeat(4,76px);gap:10px;padding:12px;border-top:1px solid var(--line)}.detail-thumbs img{width:76px;height:76px;object-fit:contain;border:1px solid var(--line);border-radius:10px;background:#fbfaf7}.detail-copy{padding:32px}.detail-copy h1{font-size:clamp(36px,4vw,54px)}.detail-meta{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.detail-meta span,.detail-meta em{padding:5px 11px;border-radius:999px;background:#f0f4fa;color:#53657e;font-size:13px;font-style:normal}.detail-meta em{background:#e9fbf1;color:#13834b}.author{margin:0 0 18px;color:#40516c}.drawing-description p{margin:0 0 12px;color:var(--muted)}.detail-actions{display:grid;gap:10px;margin-top:24px}.trust-note{margin:14px 0 0;padding:14px 16px;border-radius:12px;background:#f4f7fc;color:#667690;font-size:13px}.related-links{margin-top:24px;padding:24px}.related-links h2{margin:0 0 12px;font-size:21px}.related-links div{display:flex;flex-wrap:wrap;gap:10px}.related-links a{padding:8px 12px;border-radius:999px;background:#edf4ff;color:#2758ab;text-decoration:none;font-weight:750;font-size:13px}.site-footer{padding:30px 24px;text-align:center;background:#fff;border-top:1px solid var(--line);color:#738198;font-size:13px}.site-footer p{margin:3px 0}@media(max-width:900px){.drawing-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.detail-layout{grid-template-columns:1fr}.detail-copy{padding:26px}}@media(max-width:680px){.site-header{height:auto;padding:14px 16px;align-items:flex-start}.site-header nav{gap:12px;flex-wrap:wrap;justify-content:flex-end}.site-header nav a{font-size:13px}.brand small{display:none}main{padding:24px 16px 48px}.gallery-hero{display:block;padding:24px}.gallery-hero .primary-button{width:100%;margin-top:20px}.drawing-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.drawing-card-copy{display:block;padding:11px}.drawing-card-copy b{display:block;font-size:15px}.drawing-card-copy span{display:block;margin-top:2px}.drawing-card-copy em{display:inline-block;margin-top:7px}.info-strip{display:block}.info-strip span{display:block;margin-top:5px}.detail-copy{padding:22px}.detail-copy h1{font-size:36px}.detail-thumbs{grid-template-columns:repeat(4,64px)}.detail-thumbs img{width:64px;height:64px}}@media(max-width:380px){.drawing-grid{grid-template-columns:1fr}.site-header nav a:nth-child(3){display:none}}