.lib{--blue:#123c69;--green:#2f9e73;--bg:#f4f7fb;--card:#fff;--line:#e3eaf2;--mut:#5f6b72;--text:#22303c;background:var(--bg);min-height:100vh;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}.lib-top{background:var(--blue);color:#fff;align-items:center;gap:20px;padding:14px 34px;display:flex}.lib-home{color:#d7e3f1;font-size:14px;font-weight:600;text-decoration:none}.lib-home:hover{color:#fff;text-decoration:underline}.lib-brand{font-size:18px;font-weight:800}.lib-brand span{color:#8fd0b6}.lib-main{max-width:900px;margin:0 auto;padding:34px 24px 70px}.lib-h1{color:var(--blue);margin:0 0 6px;font-size:28px;font-weight:800}.lib-sub{color:var(--mut);max-width:680px;margin:0 0 22px;font-size:15.5px;line-height:1.55}.lib-jump{background:var(--bg);z-index:2;flex-wrap:wrap;gap:8px;margin-bottom:30px;padding:10px 0;display:flex;position:sticky;top:0}.lib-jump a{border:1.5px solid var(--line);color:var(--blue);background:#fff;border-radius:999px;padding:7px 13px;font-size:13px;font-weight:700;text-decoration:none}.lib-jump a:hover{border-color:#b9cee6}.lib-hub{border-top:1px solid var(--line);margin-bottom:52px;padding-top:28px;scroll-margin-top:96px}.lib-hub:first-of-type{border-top:0;padding-top:8px}.lib-hub-h{color:var(--blue);border-bottom:3px solid var(--blue);margin:0 0 10px;padding-bottom:10px;font-size:24px;font-weight:800}.lib-hub-intro{color:var(--mut);margin:0 0 18px;font-size:14px;line-height:1.6}.lib-sg{margin-bottom:22px}.lib-sg-h{color:var(--green);margin:0 0 4px;font-size:16px;font-weight:800}.lib-sg-desc{color:var(--mut);margin:0 0 12px;font-size:13px;line-height:1.5}.lib-cards{gap:10px;display:grid}.lib-card{background:var(--card);border:1px solid var(--line);color:inherit;border-radius:12px;align-items:flex-start;gap:12px;padding:14px 16px;text-decoration:none;transition:box-shadow .15s,transform .12s;display:flex}.lib-card:not(.lib-card-flat):hover{transform:translateY(-1px);box-shadow:0 12px 30px #123c691f}.lib-card-flat{cursor:default;opacity:.85}.lib-dot{color:#fff;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:24px;margin-top:1px;font-size:12.5px;font-weight:800;display:inline-flex}.lib-card-main{flex-direction:column;gap:3px;display:flex}.lib-card-main strong{color:var(--blue);font-size:15px}.lib-card-blurb{color:var(--mut);font-size:13px;line-height:1.5}