:root{--bg:#030b1c;--panel:#071934;--panel2:#0a2248;--line:#149cff;--cyan:#42d8ff;--gold:#ffc83d;--green:#61db72;--red:#ff4f63;--muted:#9fb7d8;--text:#f7fbff}
*{box-sizing:border-box} html,body{margin:0;height:100%;min-height:100%;background:radial-gradient(circle at 50% -20%,#0d3b73 0,#06142d 35%,var(--bg) 75%);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}
body{display:grid;grid-template-rows:64px minmax(0,1fr) 72px;height:100dvh;min-height:100dvh;overflow:hidden}
button{font:inherit}.topbar{display:flex;align-items:center;justify-content:space-between;padding:0 14px;border-bottom:1px solid #164976;background:rgba(3,11,28,.92);backdrop-filter:blur(12px);z-index:20}.brand{display:flex;gap:10px;align-items:baseline}.brand strong{font-size:1.25rem;color:var(--cyan)}.brand span{color:var(--muted);font-size:.9rem}.icon-btn{border:1px solid #235b90;background:#071934;color:white;border-radius:10px;width:42px;height:42px;font-size:1.3rem;cursor:pointer}.icon-btn:hover,.nav-btn:hover{border-color:var(--cyan)}main{min-height:0;overflow-x:hidden;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain;touch-action:pan-y;padding:18px 14px 32px;scrollbar-gutter:stable}.book{max-width:960px;min-height:100%;margin:auto}.page{display:none;min-height:calc(100dvh - 180px);border:1px solid #1b5f9a;border-radius:22px;background:linear-gradient(155deg,rgba(12,37,76,.98),rgba(3,13,30,.98));box-shadow:0 25px 80px rgba(0,0,0,.55),inset 0 0 50px rgba(20,156,255,.06);padding:clamp(18px,4vw,42px);position:relative;overflow:visible}.page.active{display:block;animation:turn .25s ease}.page:before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 45%,rgba(66,216,255,.035));pointer-events:none}@keyframes turn{from{opacity:.2;transform:translateX(18px) scale(.99)}to{opacity:1;transform:none}}
.cover{grid-template-columns:minmax(220px,340px) 1fr;align-items:center;gap:34px}.page.cover.active{display:grid}.cover-art{width:100%;border-radius:18px;border:1px solid #2baaff;box-shadow:0 0 40px rgba(20,156,255,.28)}.cover h1{font-size:clamp(2.7rem,7vw,5.5rem);line-height:.88;margin:.2em 0;text-transform:uppercase;font-style:italic}.cover h1 span{color:var(--cyan)}.eyebrow,.page-no{color:var(--cyan);text-transform:uppercase;letter-spacing:.18em;font-weight:800}.tagline{font-size:1.2rem;color:#c9ddf6}.motto{margin-top:28px;color:var(--gold);font-weight:800;letter-spacing:.08em}.page h1{font-size:clamp(2rem,5vw,3.7rem);margin:.15em 0 .1em;font-style:italic;text-transform:uppercase}.subtitle{color:#bcd2ed;font-size:1.05rem;margin-bottom:22px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.card{border:1px solid #1f6da9;background:rgba(4,18,41,.78);border-radius:15px;padding:16px}.card h2{margin:0 0 10px;font-size:1rem;text-transform:uppercase;letter-spacing:.08em}.fact h2{color:var(--cyan)}.rule h2{color:var(--gold)}.recommend h2{color:var(--green)}.warning h2{color:var(--red)}ul{margin:.4rem 0 0;padding-left:1.15rem}li{margin:.55rem 0;line-height:1.35}.timeline{display:grid;gap:9px}.step{display:grid;grid-template-columns:96px 1fr;gap:12px;align-items:center;border-left:3px solid var(--gold);padding:10px 12px;background:#06152d;border-radius:8px}.step strong{color:var(--gold)}.big-number{font-size:2rem;color:var(--cyan);font-weight:900}.footer-note{margin-top:22px;padding-top:12px;border-top:1px solid #194a77;color:#88a9cd;font-size:.78rem}.pill{display:inline-block;border:1px solid #276ba4;border-radius:99px;padding:5px 10px;margin:3px;color:#c9e4ff}.controls{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;padding:10px 14px;border-top:1px solid #164976;background:rgba(3,11,28,.95);z-index:20}.nav-btn{border:1px solid #286aa2;background:linear-gradient(#0d2d59,#071a36);color:white;padding:12px 18px;border-radius:12px;font-weight:800;cursor:pointer}.nav-btn:last-child{justify-self:end}.nav-btn:disabled{opacity:.35;cursor:not-allowed}.page-status{color:var(--muted);font-variant-numeric:tabular-nums}.toc{position:fixed;left:0;top:0;bottom:0;width:min(360px,88vw);background:#05142c;border-right:1px solid #1e6ca9;z-index:40;transform:translateX(-103%);transition:.2s;padding:14px;overflow:auto}.toc.open{transform:none}.toc-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.toc a{display:block;color:#d8eaff;text-decoration:none;padding:10px 12px;border-radius:9px}.toc a:hover,.toc a.current{background:#0c2c57;color:var(--cyan)}.scrim{position:fixed;inset:0;background:rgba(0,0,0,.58);z-index:30;display:none}.scrim.show{display:block}
@media(max-width:700px){body{grid-template-rows:58px minmax(0,1fr) 66px}.brand span{display:none}main{padding:10px 10px 26px}.page{min-height:calc(100dvh - 154px);height:auto;padding:20px 20px 34px;border-radius:15px}.cover{grid-template-columns:1fr;text-align:center}.cover-art{max-height:42dvh;width:auto;margin:auto}.grid{grid-template-columns:1fr}.page h1{font-size:2.15rem}.controls{padding:8px}.nav-btn{padding:10px 12px;font-size:.9rem}.step{grid-template-columns:76px 1fr}}
@media print{body{display:block;overflow:visible}.topbar,.controls,.toc,.scrim{display:none!important}main{overflow:visible;padding:0}.page{display:block!important;page-break-after:always;min-height:100vh;border-radius:0;box-shadow:none}.cover{display:grid!important}}

.command-section{grid-column:1/-1}.command-section>h2{margin:0 0 12px;color:var(--cyan);text-transform:uppercase;letter-spacing:.08em}.jump-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.jump-card{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:10px;text-align:left;border:1px solid #2476b8;background:linear-gradient(145deg,#0b2a55,#06152d);color:white;border-radius:14px;padding:14px;cursor:pointer;min-height:82px}.jump-card:hover,.jump-card:focus{border-color:var(--cyan);transform:translateY(-1px);box-shadow:0 0 20px rgba(66,216,255,.15)}.jump-card span{grid-row:1/3;font-size:1.7rem;align-self:center}.jump-card strong{align-self:end}.jump-card small{color:var(--muted);margin-top:3px}.glance{grid-column:1/-1}.glance-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.glance-grid div{display:flex;justify-content:space-between;gap:12px;align-items:center;border-bottom:1px solid #194a77;padding:9px 2px}.glance-grid span{color:#c5d9f1}.glance-grid strong{color:var(--cyan);text-align:right}.quick-jump{position:fixed;right:14px;bottom:84px;z-index:25;border:1px solid #2a91d6;background:linear-gradient(145deg,#0c3d78,#071b38);color:white;border-radius:999px;padding:10px 14px;font-weight:800;box-shadow:0 8px 28px rgba(0,0,0,.42);cursor:pointer}.quick-jump:hover{border-color:var(--cyan)}
@media(max-width:700px){.jump-grid{grid-template-columns:1fr 1fr}.glance-grid{grid-template-columns:1fr}.quick-jump{right:10px;bottom:74px;padding:9px 12px;font-size:.82rem}.jump-card{min-height:76px;padding:11px}}
@media(max-width:420px){.jump-grid{grid-template-columns:1fr}}
@media print{.quick-jump{display:none!important}}

/* DxCo Handbook v2.0 */
.topbar{gap:10px}.brand{border:0;background:transparent;color:inherit;cursor:pointer;padding:6px 8px;border-radius:10px}.brand:hover{background:#0a2248}.top-actions{display:flex;gap:8px}.icon-btn.saved,#favoriteBtn.saved{color:var(--gold);border-color:#a97f18}.progress-track{position:sticky;top:-18px;z-index:12;height:3px;background:#0a1c37;margin:-18px -14px 16px}.progress-track span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--line),var(--cyan));box-shadow:0 0 14px var(--cyan);transition:width .2s ease}.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.page-header h1{margin-top:.08em}.page-favorite{flex:0 0 44px;width:44px;height:44px;border:1px solid #286aa2;border-radius:12px;background:#071934;color:#d8eaff;font-size:1.45rem;cursor:pointer}.page-favorite.saved{color:var(--gold);border-color:#a97f18}.card{transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.card:hover{transform:translateY(-2px);border-color:#2d8cd1;box-shadow:0 12px 24px rgba(0,0,0,.18)}.related{grid-column:1/-1;margin-top:18px;padding-top:18px;border-top:1px solid #194a77}.related h2{color:var(--cyan);text-transform:uppercase;letter-spacing:.08em;font-size:1rem}.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.related-grid button{display:flex;justify-content:space-between;align-items:center;gap:8px;border:1px solid #226aa4;background:#071a36;color:#edf7ff;border-radius:12px;padding:13px;text-align:left;cursor:pointer}.related-grid button:hover{border-color:var(--cyan);background:#0a2851}.related-grid small{color:var(--muted);white-space:nowrap}.cover-actions{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}.cover-actions button,.toc-home{border:1px solid #2a91d6;background:linear-gradient(145deg,#0c3d78,#071b38);color:white;border-radius:12px;padding:12px 16px;font-weight:800;cursor:pointer}.cover-actions button:first-child{background:linear-gradient(145deg,#1479bd,#0a3972)}.toc-home{width:100%;text-align:left;margin-bottom:10px}.toc-label{color:#6f93ba;font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;margin:14px 10px 6px}.toc a{display:grid;grid-template-columns:34px 1fr auto;gap:8px;align-items:center}.toc a span{color:#6f93ba;font-variant-numeric:tabular-nums}.toc a b{color:var(--gold)}
.search-panel{position:fixed;inset:0;z-index:60;background:rgba(0,7,18,.82);backdrop-filter:blur(10px);display:none;padding:clamp(14px,5vw,60px)}.search-panel.open{display:grid;place-items:start center}.search-box{width:min(720px,100%);max-height:calc(100dvh - 40px);overflow:auto;background:#06152d;border:1px solid #2274b1;border-radius:20px;padding:18px;box-shadow:0 30px 100px rgba(0,0,0,.65)}.search-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.search-head strong{font-size:1.2rem;color:var(--cyan)}#searchInput{width:100%;border:1px solid #286aa2;background:#031026;color:white;border-radius:12px;padding:14px 16px;font-size:1rem;outline:none}#searchInput:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(66,216,255,.12)}.search-results{display:grid;gap:8px;margin-top:12px}.search-results button{border:1px solid #1c5688;background:#071a36;color:white;border-radius:12px;padding:12px 14px;text-align:left;cursor:pointer}.search-results button:hover{border-color:var(--cyan);background:#0a2851}.search-results strong,.search-results span{display:block}.search-results span{color:var(--muted);font-size:.86rem;margin-top:3px}.no-results{color:var(--muted);text-align:center;padding:24px}
@media(max-width:700px){.top-actions{gap:5px}.top-actions .icon-btn{width:38px;height:38px;font-size:1.1rem}.progress-track{top:-10px;margin:-10px -10px 12px}.related-grid{grid-template-columns:1fr}.page-header h1{font-size:2rem}.page-favorite{width:40px;height:40px;flex-basis:40px}.cover-actions{justify-content:center}.search-panel{padding:10px}.search-box{max-height:calc(100dvh - 20px);border-radius:15px}.card:hover{transform:none}}
@media(max-width:390px){.top-actions #favoriteBtn{display:none}.brand strong{font-size:1.05rem}}

.home-start-actions{display:grid;gap:12px;margin:24px 0 8px}
.home-start-actions button{min-height:54px;border-radius:14px;border:1px solid rgba(91,181,255,.45);background:rgba(15,62,112,.78);color:#fff;font-weight:800;font-size:1rem;padding:14px 18px}
.home-start-actions .primary-start{background:linear-gradient(135deg,#1678d3,#26b9ff);box-shadow:0 10px 28px rgba(0,145,255,.25)}
.home-screen .page-no{color:#65c7ff}