:root{color-scheme:dark;--bg: #1b2d40;--bg-deep: #111d2a;--void: #071018;--panel: rgba(14, 24, 35, .9);--panel-soft: rgba(33, 51, 67, .92);--text: #d6e2ee;--text-soft: #a9bfd1;--accent: #6fb8e3;--accent-soft: #b4e4f6;--accent-bright: #f2fcff;--line: rgba(180, 228, 246, .18);--line-strong: rgba(180, 228, 246, .34);--mono: "JetBrains Mono", "SFMono-Regular", Menlo, monospace}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{overflow:hidden;background:radial-gradient(circle at top,rgba(111,184,227,.08),transparent 22%),linear-gradient(180deg,var(--bg) 0%,var(--bg-deep) 46%,var(--void) 100%);color:var(--text);font-family:Inter,system-ui,sans-serif}button,input,textarea,select{font:inherit}.app-shell{position:relative;height:100%}.app-shell:before{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(180deg,rgba(255,255,255,.015) 0,rgba(255,255,255,.015) 1px,transparent 1px,transparent 5px);opacity:.12}.ambient-lines{position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,transparent 0,transparent 18%,rgba(180,228,246,.03) 18.2%,transparent 18.4%,transparent 81.6%,rgba(180,228,246,.03) 81.8%,transparent 82%),linear-gradient(180deg,transparent 0,transparent 72%,rgba(180,228,246,.045) 72.2%,transparent 72.4%)}.presentation-shell{height:100%}.stage-shell{position:relative;width:100%;height:100%}.slide-counter{position:absolute;top:1rem;right:1.25rem;z-index:1;color:#b4e4f6c7;font:500 .78rem/1 var(--mono);letter-spacing:.08em}.help-title,.help-key{font-family:var(--mono);letter-spacing:.1em;text-transform:uppercase}.stage-frame{min-height:0;height:100%;background:radial-gradient(circle at top,#32495d24,#081018f0 62%);overflow:hidden}.markdown-stage,.media-stage,.stage-empty{height:100%;min-height:0}.markdown-stage{display:flex;flex-direction:column;justify-content:center;padding:clamp(2rem,5vw,4rem);overflow:auto;text-align:center}.media-stage{display:flex;align-items:center;justify-content:center;padding:2rem}.stage-empty{display:flex;align-items:center;justify-content:center;padding:2rem;color:var(--text-soft);font-size:1.02rem}.slide-img,.markdown-img{max-width:100%;max-height:calc(100vh - 4rem);display:block;margin-inline:auto;border-radius:8px;box-shadow:0 18px 48px #0000003d}.nav-zone{position:fixed;top:0;bottom:0;width:7vw;min-width:2rem;max-width:4.5rem;border:0;padding:0;background:transparent;cursor:pointer}.nav-zone-left{left:0}.nav-zone-right{right:0}.help-overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:1.5rem;background:#071018ad;backdrop-filter:blur(10px)}.help-panel{width:min(100%,620px);padding:1rem;border-radius:14px;background:linear-gradient(180deg,#1a2a3af5,#0b141dfc);box-shadow:0 24px 80px #0006}.help-title{margin-bottom:.95rem;color:var(--accent-bright);font-size:.92rem}.help-grid{display:grid;grid-template-columns:minmax(12rem,15rem) 1fr;gap:.8rem 1rem}.help-key{padding:.6rem .72rem;border-radius:10px;background:#07101847;color:var(--accent-soft);font-size:.8rem}.help-desc{align-self:center;color:var(--text-soft);line-height:1.5}.markdown-stage h1,.markdown-stage h2,.markdown-stage h3{margin:0 0 1rem;color:var(--accent-bright);font-family:var(--mono);letter-spacing:.02em;text-transform:uppercase}.markdown-stage h1{font-size:clamp(2.15rem,5.4vw,3.9rem)}.markdown-stage h2{font-size:clamp(1.8rem,4vw,3rem)}.markdown-stage h3{font-size:clamp(1.35rem,3vw,2rem)}.markdown-stage p,.markdown-stage li{color:var(--text-soft);font-size:clamp(1rem,1.8vw,1.18rem);line-height:1.72}.markdown-stage p{margin:0 0 1.1rem}.markdown-stage ul{width:fit-content;max-width:min(100%,32rem);margin:.2rem auto 0;padding-left:1.25rem;text-align:left;list-style-position:outside;transform:translate(-4rem)}.markdown-stage li{margin:.35rem 0}.markdown-stage code,.stage-empty code{padding:.15rem .35rem;border-radius:.35rem;background:#4d86b02e;color:var(--accent-bright);font-family:var(--mono)}.markdown-stage a{color:var(--accent-soft);text-decoration:underline;text-underline-offset:.18em;cursor:pointer}@media(max-width:720px){body{overflow:auto}.presentation-shell{height:auto;min-height:100%;padding:0}.stage-shell{min-height:72vh}.slide-counter{top:.85rem;right:.9rem}.stage-frame{height:72vh}.markdown-stage{padding:1.35rem}.media-stage{padding:1rem}.help-grid{grid-template-columns:1fr}.nav-zone{width:12vw;min-width:1.5rem;max-width:3rem}}