:root{--navy:#0d2b4e;--navy-light:#173f6e;--gold:#c9a24b;--gold-light:#e8d5a3;--paper:#f7f5f0;--ink:#1c2733;--ink-soft:#5a6472;--line:#e3ddd0;--c-navy:#0d2b4e;--c-purple:#6d5b8a;--c-salmon:#c2645f;--c-green:#7c9473;--c-teal:#5f8fa3;--c-tan:#c99b5b;--c-olive:#8a8355;--c-red:#a3312b}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Inter,Arial,sans-serif;background:var(--paper);color:var(--ink)}header.app-header{background:linear-gradient(120deg,var(--navy) 0%,var(--navy-light) 100%);color:#fff;padding:28px 40px 22px;border-bottom:4px solid var(--gold);display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap}header.app-header .eyebrow{color:var(--gold-light);letter-spacing:.14em;font-size:12px;font-weight:600;text-transform:uppercase}header.app-header h1{margin:6px 0 4px;font-size:28px;font-weight:700;letter-spacing:.01em}header.app-header p{margin:0;color:#c9d4e0;font-size:14px;max-width:720px;line-height:1.5}.session-box{text-align:right;font-size:12.5px;color:#c9d4e0}.session-box button{margin-top:6px;background:none;border:1px solid var(--gold-light);color:#fff;border-radius:6px;padding:6px 12px;cursor:pointer;font-size:12.5px}.session-box button:hover{background:#ffffff1a}nav.tabs{display:flex;gap:6px;padding:0 40px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}nav.tabs a,nav.tabs button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:none;padding:14px 18px;font-size:14px;font-weight:600;color:var(--ink-soft);cursor:pointer;border-bottom:3px solid transparent;letter-spacing:.02em;text-decoration:none;display:inline-block}nav.tabs a.active,nav.tabs button.active{color:var(--navy);border-bottom-color:var(--gold)}nav.tabs a:hover,nav.tabs button:hover{color:var(--navy)}main.app-main{max-width:1180px;margin:0 auto;padding:30px 40px 80px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-bottom:34px}.card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 1px 3px #141e3214,0 1px 2px #141e320f;border:1px solid var(--line);display:flex;flex-direction:column}.card .head{padding:13px 16px;font-weight:700;font-size:13px;letter-spacing:.03em;color:#fff}.card ul{list-style:none;margin:0;padding:10px 8px;flex:1}.card li{padding:7px 10px;font-size:13.5px;border-radius:6px;cursor:pointer;color:var(--ink);line-height:1.35}.card li:hover{background:var(--paper);color:var(--navy)}.card li:before{content:"›";color:var(--gold);font-weight:700;margin-right:6px}.card .undrilled{color:var(--ink-soft);font-style:italic}.card .undrilled:before{color:var(--ink-soft)}.undrilled{color:var(--ink-soft);font-style:italic}.page-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}.page-head h2{margin:0;font-size:22px;color:var(--navy)}.page-head .sub{color:var(--ink-soft);font-size:13px}.division-picker{display:flex;gap:6px;margin-bottom:16px;flex-wrap:wrap}.division-btn{font:inherit;font-size:13px;font-weight:600;padding:7px 16px;border-radius:20px;border:1px solid var(--line);background:#fff;color:var(--ink-soft);cursor:pointer;transition:background .15s ease,color .15s ease,border-color .15s ease}.division-btn:hover{border-color:var(--gold);color:var(--navy)}.division-btn.active{background:var(--navy);border-color:var(--navy);color:#fff}.division-gap-note{font-size:13px;color:var(--ink-soft);background:var(--paper);border:1px dashed var(--gold);border-radius:8px;padding:10px 14px;margin:0 0 16px;max-width:640px}.manual-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}.manual-tile{display:block;width:100%;text-align:left;background:#fff;border:1px solid var(--line);border-radius:10px;padding:0;cursor:pointer;overflow:hidden;font:inherit;color:inherit;box-shadow:0 1px 3px #141e3214,0 1px 2px #141e320f;transition:box-shadow .15s ease,transform .15s ease,border-color .15s ease}.manual-tile:hover{box-shadow:0 6px 18px #141e3224;transform:translateY(-1px);border-color:var(--gold)}.manual-tile:focus-visible{outline:3px solid var(--gold);outline-offset:2px}.manual-tile .bar{height:5px}.manual-tile .tile-body{padding:16px}.manual-tile .tile-code{font-weight:700;font-size:12px;letter-spacing:.06em;color:#fff;padding:3px 9px;border-radius:20px;display:inline-block;margin-bottom:10px}.manual-tile h3{font-size:15px;font-weight:600;line-height:1.3;margin:0 0 14px;color:var(--ink);min-height:2.6em}.manual-tile .tile-meta{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--ink-soft);border-top:1px dashed var(--line);padding-top:10px}.manual-tile .tile-meta .arrow{font-weight:600;color:var(--navy)}.crumb{font-size:13px;color:var(--ink-soft);margin-bottom:16px}.crumb a{color:var(--navy);font-weight:600}.detail-head{display:flex;gap:16px;align-items:center;margin-bottom:6px}.detail-head .swatch{flex:none;width:44px;height:44px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:#fff}.detail-head h2{font-size:21px;color:var(--navy);margin:0}.index-toolbar{margin:0 0 14px 60px;padding-bottom:10px;border-bottom:2px solid var(--line)}.index-toolbar .count{font-size:12px;font-weight:600;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.06em}.index-columns{margin-left:60px;column-width:280px;column-gap:32px;margin-bottom:6px}.index-group{break-inside:avoid;margin-bottom:18px}.index-group h4{font-weight:700;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--gold);margin:0 0 6px;padding-bottom:4px;border-bottom:1px solid var(--gold-light)}.index-row{display:flex;gap:10px;align-items:baseline;padding:5px 0;font-size:13.5px;break-inside:avoid;cursor:pointer}.index-row .code{font-variant-numeric:tabular-nums;font-weight:600;color:var(--navy);flex:none;min-width:64px}.index-row .title{color:var(--ink)}.index-row:hover .title{text-decoration:underline;text-underline-offset:2px;color:var(--navy)}.index-row.undrilled{cursor:default}@media (max-width:640px){.index-columns{column-width:auto;column-count:1}.index-toolbar,.index-columns{margin-left:0}}.variant-group{border-top:1px solid var(--line)}.variant-group:first-of-type{border-top:none}.variant-group-label{padding:10px 12px 2px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);margin-left:60px}.variant-group ul{flex:none;padding:2px 8px 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9px;border-radius:12px;font-size:11px;font-weight:700;color:#fff}footer.app-footer{text-align:center;padding:26px 20px 50px;color:var(--ink-soft);font-size:12px}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--navy)}.login-card{background:#fff;border-radius:12px;padding:36px 40px;width:360px;box-shadow:0 20px 60px #0000004d}.login-card h1{font-size:20px;margin:0 0 4px;color:var(--navy)}.login-card .eyebrow{color:var(--gold);font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}.login-card label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-soft);margin:16px 0 6px}.login-card input{width:100%;padding:10px 12px;border-radius:6px;border:1px solid var(--line);font-size:14px}.login-card button{width:100%;margin-top:22px;padding:11px;border-radius:6px;border:none;background:var(--navy);color:#fff;font-weight:600;cursor:pointer}.login-card 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a:hover{color:var(--navy);text-decoration:underline}.chapter-body{flex:1;min-width:0;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 32px 32px}.chapter-section{padding-top:24px;scroll-margin-top:64px}.chapter-section+.chapter-section{border-top:1px solid var(--line)}.chapter-section h3{font-size:16.5px;color:var(--navy);margin:0 0 10px}.chapter-section h4{font-size:13.5px;font-weight:700;color:var(--ink-soft);margin:18px 0 8px;text-transform:uppercase;letter-spacing:.03em}.chapter-section p{font-size:14.5px;line-height:1.7;color:var(--ink);margin:0 0 14px}.chapter-section ul,.chapter-section ol{margin:0 0 14px;padding-left:22px}.chapter-section li{font-size:14.5px;line-height:1.7;color:var(--ink);margin-bottom:6px}.chapter-section table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:13px}.chapter-section th,.chapter-section td{border:1px solid var(--line);padding:7px 10px;text-align:left;vertical-align:top}.chapter-section 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