*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#090d18;--surface:#0f1623;--surface2:#141e2e;--surface3:#192337;
  --border:#1e2d45;--border2:#2a3f5f;
  --text:#dde6f0;--text-dim:#4e6580;--text-code:#93c5fd;
  --c1:#3b82f6;--c2:#8b5cf6;--c3:#22d3ee;--c4:#10b981;--c5:#f59e0b;--c6:#f43f5e;
  --gold:#f59e0b;
}
body{font-family:'IBM Plex Sans',system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}
.top-nav{background:rgba(15,22,35,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);padding:11px 20px;display:flex;align-items:center;gap:6px;flex-wrap:wrap;position:sticky;top:0;z-index:100}
.nav-brand{font-family:'IBM Plex Mono',monospace;font-weight:600;font-size:11px;color:var(--gold);letter-spacing:.5px;margin-right:10px}
.nav-link{color:var(--text-dim);text-decoration:none;font-size:11px;padding:3px 9px;border-radius:3px;border:1px solid transparent;transition:all .15s;font-family:'IBM Plex Mono',monospace;white-space:nowrap}
.nav-link:hover{color:var(--text);border-color:var(--border2)}
.nav-link.active{color:var(--c5);border-color:var(--c5)}
.main{max-width:820px;margin:0 auto;padding:40px 20px 80px}
.phase-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.22);border-radius:3px;font-family:'IBM Plex Mono',monospace;font-size:9px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;padding:4px 10px;color:var(--c5);margin-bottom:12px}
.page-title{font-size:24px;font-weight:700;letter-spacing:-.4px;margin-bottom:6px}
.page-subtitle{color:var(--text-dim);font-size:13px;margin-bottom:36px}
.flow{display:flex;flex-direction:column;gap:0}
.node{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--c5);border-radius:6px;padding:14px 18px}
.node.secondary{border-left-color:var(--border2)}
.node.cache-hit{border-left-color:var(--c6);background:rgba(244,63,94,.03)}
.node-phase{font-family:'IBM Plex Mono',monospace;font-size:9px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--text-dim);margin-bottom:4px}
.node-title{font-size:14px;font-weight:600;margin-bottom:6px}
.node-detail{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--text-dim);line-height:1.7}
.node-detail code{color:var(--text-code);background:rgba(147,197,253,.07);padding:0 3px;border-radius:2px}
.arrow-down{display:flex;align-items:center;justify-content:center;height:22px;position:relative}
.arrow-down::before{content:'';position:absolute;width:1px;height:100%;background:var(--border2);left:50%}
.arrow-down::after{content:'▼';background:var(--bg);padding:0 4px;position:relative;font-size:7px;color:var(--border2)}
.endpoint{align-self:center;background:transparent;border:2px solid var(--gold);border-radius:100px;padding:7px 26px;font-size:13px;font-weight:600;color:var(--gold);text-align:center}
.endpoint.prev{border-color:var(--c4);color:var(--c4);border-width:1.5px;font-size:12px;padding:5px 20px}
.steps{margin-top:10px;display:flex;flex-direction:column;gap:6px}
.step{display:flex;gap:10px;background:var(--surface2);border:1px solid var(--border);border-radius:4px;padding:9px 12px;align-items:flex-start}
.step.highlighted{border-color:var(--c5);background:rgba(245,158,11,.04)}
.step-num{font-family:'IBM Plex Mono',monospace;font-size:10px;color:var(--text-dim);background:var(--surface3);border:1px solid var(--border2);min-width:22px;height:22px;border-radius:3px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}
.step-body{flex:1}
.step-title{font-size:13px;font-weight:600;margin-bottom:2px}
.step-detail{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--text-dim);line-height:1.5}
.step-detail code{color:var(--text-code);background:rgba(147,197,253,.07);padding:0 3px;border-radius:2px}

/* CACHE DIAGRAM */
.cache-split{display:flex;gap:10px;margin-top:10px}
.cache-branch{flex:1;background:var(--surface2);border:1px solid var(--border);border-radius:4px;padding:10px 12px}
.cache-branch.hit{border-color:var(--c6);background:rgba(244,63,94,.04)}
.cache-branch-label{font-family:'IBM Plex Mono',monospace;font-size:9px;font-weight:600;letter-spacing:1.2px;text-transform:uppercase;margin-bottom:8px}
.cache-branch.hit .cache-branch-label{color:var(--c6)}
.cache-branch.miss .cache-branch-label{color:var(--text-dim)}
.cache-detail{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--text-dim);line-height:1.5}

/* THEME SYSTEM */
.theme-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.theme-card{background:var(--surface2);border:1px solid var(--border);border-radius:4px;padding:10px 12px}
.theme-card.primary{border-color:var(--c5)}
.theme-card-title{font-family:'IBM Plex Mono',monospace;font-size:11px;font-weight:600;color:var(--text-code);margin-bottom:4px}
.theme-card.primary .theme-card-title{color:var(--c5)}
.theme-card-body{font-size:11px;color:var(--text-dim);line-height:1.4}

/* BUBBLE DIAGRAM */
.bubble-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.bubble{background:var(--surface2);border:1px solid var(--border2);border-radius:3px;padding:5px 10px;font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--text-dim)}
.bubble.em{border-color:var(--c5);color:var(--c5)}

/* SDC BOX */
.sdc-box{background:rgba(139,92,246,.05);border:1px solid rgba(139,92,246,.25);border-radius:4px;padding:12px 16px;margin-top:8px}
.sdc-label{font-family:'IBM Plex Mono',monospace;font-size:9px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--c2);margin-bottom:6px}
.sdc-detail{font-size:12px;color:rgba(196,181,253,.8);line-height:1.5}
.sdc-detail code{color:var(--c2);background:rgba(139,92,246,.1);padding:0 3px;border-radius:2px;font-family:'IBM Plex Mono',monospace}

.note-box{background:rgba(34,211,238,.05);border:1px solid rgba(34,211,238,.15);border-left:3px solid var(--c3);border-radius:4px;padding:12px 16px;font-size:12px;margin-top:8px;color:#bae6fd;line-height:1.5}
.note-box .label{font-family:'IBM Plex Mono',monospace;font-size:9px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--c3);margin-bottom:4px}

.breadcrumb{font-family:'IBM Plex Mono',monospace;font-size:10px;color:var(--text-dim);margin-bottom:28px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.breadcrumb a{color:var(--text-dim);text-decoration:none}.breadcrumb a:hover{color:var(--text)}
.breadcrumb .sep{opacity:.4}.breadcrumb .current{color:var(--c5)}
.next-link{display:inline-flex;align-items:center;gap:6px;margin-top:36px;color:var(--text-dim);text-decoration:none;font-family:'IBM Plex Mono',monospace;font-size:12px;border:1px solid var(--border);padding:7px 14px;border-radius:4px;transition:all .15s}
.next-link:hover{color:var(--text);border-color:var(--border2)}