/* presentation :: base.css — reset + shared tokens + layout primitives */
/* Default tokens. Themes in assets/themes/*.css override the :root block. */
:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f8;
  --surface: #ffffff;
  --surface-2: #f2f2f4;
  --border: rgba(0,0,0,.08);
  --border-strong: rgba(0,0,0,.16);
  --text-1: #111216;
  --text-2: #55596a;
  --text-3: #8a8f9e;
  --accent: #3b6cff;
  --accent-2: #7a5cff;
  --accent-3: #ff5c8a;
  --good: #1aaf6c;
  --warn: #f5a524;
  --bad:  #e0445a;
  --grad: linear-gradient(135deg,#3b6cff,#7a5cff 55%,#ff5c8a);
  --grad-soft: linear-gradient(135deg,#eef2ff,#f5ecff 55%,#ffeef5);
  --radius: 18px;
  --radius-sm: 12px;
  --radius-lg: 26px;
  --shadow: 0 10px 30px rgba(18,24,40,.08), 0 2px 6px rgba(18,24,40,.04);
  --shadow-lg: 0 24px 60px rgba(18,24,40,.14), 0 6px 16px rgba(18,24,40,.06);
  --font-sans: 'Inter','Noto Sans SC',-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif;
  --font-serif: 'Playfair Display','Noto Serif SC',Georgia,serif;
  --font-mono: 'JetBrains Mono','IBM Plex Mono',SFMono-Regular,Menlo,monospace;
  --font-display: var(--font-sans);
  --letter-tight: -.03em;
  --letter-normal: -.01em;
  --ease: cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text-1);
  font-family:var(--font-sans);font-weight:400;line-height:1.6;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  letter-spacing:var(--letter-normal)}
img,svg,video{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code,kbd,pre,samp{font-family:var(--font-mono)}

/* ================= SLIDE SYSTEM ================= */
.deck{position:relative;width:100vw;height:100vh;overflow:hidden;background:var(--bg)}
.slide{
  position:absolute;inset:0;
  display:flex;flex-direction:column;justify-content:center;
  padding:72px 96px;
  box-sizing:border-box;
  opacity:0;pointer-events:none;
  transition:opacity .5s var(--ease), transform .5s var(--ease);
  transform:translateX(30px);
  overflow:hidden;
  background:var(--bg-texture, none), var(--bg);
}
.slide.is-active{opacity:1;pointer-events:auto;transform:translateX(0);z-index:2}
.slide.is-prev{transform:translateX(-30px)}

/* single-page standalone (used when a layout file is opened directly) */
body.single .slide{position:relative;width:100vw;height:100vh;opacity:1;transform:none;pointer-events:auto}

/* ================= TYPOGRAPHY ================= */
.eyebrow{font-size:13px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--text-3)}
.kicker{font-size:14px;font-weight:600;color:var(--accent);letter-spacing:.08em;text-transform:uppercase}
h1.title,.h1{font-family:var(--font-display);font-size:72px;line-height:1.05;font-weight:800;letter-spacing:var(--letter-tight);margin:0 0 18px;color:var(--text-1)}
h2.title,.h2{font-family:var(--font-display);font-size:54px;line-height:1.1;font-weight:700;letter-spacing:var(--letter-tight);margin:0 0 14px}
h3,.h3{font-size:32px;line-height:1.2;font-weight:600;letter-spacing:var(--letter-normal);margin:0 0 10px}
h4,.h4{font-size:22px;line-height:1.3;font-weight:600;margin:0 0 8px}
.lede{font-size:22px;line-height:1.55;color:var(--text-2);font-weight:300;max-width:62ch}
.dim{color:var(--text-2)}
.dim2{color:var(--text-3)}
.mono{font-family:var(--font-mono)}
.serif{font-family:var(--font-serif)}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}

/* ================= LAYOUT PRIMITIVES ================= */
.stack>*+*{margin-top:14px}
.row{display:flex;gap:24px;align-items:center}
.row.wrap{flex-wrap:wrap}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.center{display:flex;align-items:center;justify-content:center;text-align:center}
.fill{flex:1}
.sp-t{padding-top:24px}.sp-b{padding-bottom:24px}
.mt-s{margin-top:8px}.mt-m{margin-top:18px}.mt-l{margin-top:32px}
.mb-s{margin-bottom:8px}.mb-m{margin-bottom:18px}.mb-l{margin-bottom:32px}

/* ================= FLOW DIAGRAM ================= */
.flow{display:flex;align-items:center;gap:16px;margin-top:40px}
.flow .node{flex:1;min-width:0;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center;box-shadow:var(--shadow);position:relative}
.flow .node .ic{font-size:32px;margin-bottom:6px}
.flow .node h4{font-size:16px;margin:0 0 4px}
.flow .node p{font-size:12px;color:var(--text-3);margin:0}
.flow .arr{color:var(--text-3);font-size:28px;flex-shrink:0}
.flow .node.hl{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent),var(--shadow)}

/* ================= ARCHITECTURE DIAGRAM ================= */
.arch{margin-top:20px;display:grid;grid-template-rows:auto auto auto;gap:22px}
.arch .tier{display:grid;grid-template-columns:120px 1fr;align-items:stretch;gap:22px}
.arch .tname{display:flex;align-items:center;justify-content:center;background:var(--surface-2);border-radius:var(--radius);padding:18px;font-weight:600;font-size:13px;color:var(--text-2);text-transform:uppercase;letter-spacing:.1em;text-align:center}
.arch .cells{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.arch .cell{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;text-align:center;box-shadow:var(--shadow)}
.arch .cell .ic{font-size:24px}
.arch .cell h4{font-size:14px;margin:6px 0 2px}
.arch .cell p{font-size:11px;color:var(--text-3);margin:0}
.arch .tier.hl .cell{border-top:3px solid var(--accent)}

/* ================= MINDMAP ================= */
.mm{position:relative;margin:30px auto 0;height:520px}
.mm .n{position:absolute;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 18px;box-shadow:var(--shadow);font-weight:600}
.mm .root{top:calc(50% - 34px);left:calc(50% - 100px);width:200px;padding:22px;background:var(--accent);color:#fff;border:none;text-align:center;font-size:20px;border-radius:24px}
.mm .n.sm{font-size:13px}
.mm svg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.mm svg path{stroke:var(--border-strong);stroke-width:1.5;fill:none}

/* ================= PROCESS STEPS ================= */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;margin-top:24px}
.step{position:relative;padding:24px 26px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}
.step .num{position:absolute;top:-24px;left:22px;width:48px;height:48px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;box-shadow:var(--shadow)}
.step h4{margin:18px 0 8px;font-size:17px}
.step p{font-size:13px;color:var(--text-2);line-height:1.6}
.step .tag{display:inline-block;margin-top:10px;font-size:11px;padding:3px 10px;border-radius:999px;background:var(--surface-2);color:var(--text-3)}

/* ================= TIMELINE HORIZONTAL ================= */
.tl{position:relative;margin-top:40px}
.tl::before{content:"";position:absolute;left:0;right:0;top:48px;height:2px;background:var(--border)}
.tl .row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:22px;align-items:start}
.tl .item{position:relative;padding-top:80px;text-align:center}
.tl .dot{position:absolute;top:36px;left:50%;transform:translateX(-50%);width:24px;height:24px;border-radius:50%;background:var(--accent);border:4px solid var(--bg);box-shadow:0 0 0 2px var(--accent)}
.tl .year{font-size:14px;color:var(--text-3);letter-spacing:.12em;text-transform:uppercase;position:absolute;top:0;left:0;right:0;font-weight:600}
.tl h4{font-size:18px}
.tl p{font-size:13px;color:var(--text-2)}

/* ================= TIMELINE VERTICAL ================= */
.tl-v{position:relative;padding-left:32px;margin-top:36px}
.tl-v::before{content:"";position:absolute;left:7px;top:0;bottom:0;width:2px;background:var(--border)}
.tl-v-item{position:relative;margin-bottom:32px}
.tl-v-item:last-child{margin-bottom:0}
.tl-v-item::before{content:"";position:absolute;left:-29px;top:5px;width:12px;height:12px;border-radius:50%;background:var(--accent);border:3px solid var(--bg);box-shadow:0 0 0 2px var(--accent)}
.tl-v-date{font-size:13px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}
.tl-v-title{font-size:18px;font-weight:600;color:var(--text-1);margin-bottom:4px}
.tl-v-text{font-size:14px;color:var(--text-2);line-height:1.55}
.tl-v-item.highlight::before{background:var(--bad);box-shadow:0 0 0 2px var(--bad)}
.tl-v-item.highlight .tl-v-date{color:var(--bad)}

/* ================= ROADMAP ================= */
.rm{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:28px;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.rm .col{padding:20px 22px;border-right:1px solid var(--border);background:var(--surface);position:relative}
.rm .col:last-child{border-right:none}
.rm .col .tag{display:inline-block;padding:3px 12px;border-radius:999px;font-size:11px;background:var(--surface-2);color:var(--text-2);margin-bottom:10px}
.rm .col.now{background:color-mix(in srgb,var(--accent) 6%,var(--surface))}
.rm .col.now .tag{background:var(--accent);color:#fff}
.rm h4{font-size:15px;margin:8px 0 4px}
.rm ul{padding-left:18px;margin:8px 0 0;font-size:13px;color:var(--text-2)}
.rm li{margin-bottom:6px;line-height:1.5}

/* ================= GANTT ================= */
.gantt{margin-top:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.gantt .hd{display:grid;grid-template-columns:200px repeat(12,1fr);gap:4px;font-size:12px;color:var(--text-3);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid var(--border)}
.gantt .row{display:grid;grid-template-columns:200px repeat(12,1fr);gap:4px;align-items:center;height:40px}
.gantt .lbl{font-size:14px;font-weight:500}
.gantt .cells{grid-column:2/-1;position:relative;height:28px;background:linear-gradient(90deg,var(--surface-2) 1px,transparent 1px) 0 0/calc(100%/12) 100%}
.gantt .bar{position:absolute;top:4px;height:20px;border-radius:6px;background:var(--grad);display:flex;align-items:center;padding:0 10px;font-size:11px;color:#fff;font-weight:600;box-shadow:var(--shadow)}

/* ================= TODO CHECKLIST ================= */
.todo{max-width:820px;margin-top:26px}
.todo li{list-style:none;display:flex;align-items:flex-start;gap:14px;padding:14px 18px;border-bottom:1px solid var(--border)}
.todo li .b{flex-shrink:0;width:22px;height:22px;border:2px solid var(--border-strong);border-radius:6px;display:flex;align-items:center;justify-content:center;margin-top:2px}
.todo li.done .b{background:var(--good);border-color:var(--good);color:#fff}
.todo li.done .b::after{content:"\2713";font-weight:900}
.todo li.done .t{text-decoration:line-through;color:var(--text-3)}
.todo li .t{font-size:18px}
.todo li .tag{margin-left:auto;font-size:12px;color:var(--text-3)}

/* ================= TERMINAL ================= */
.term{font-family:var(--font-mono);font-size:16px;background:#020803;border:1px solid rgba(0,255,120,.3);border-radius:10px;padding:24px 28px;box-shadow:0 0 60px rgba(0,255,136,.08) inset}
.term .bar{display:flex;gap:6px;margin-bottom:16px}
.term .bar span{width:12px;height:12px;border-radius:50%;background:#222;border:1px solid rgba(0,255,136,.3)}
.term .p{color:var(--accent)}
.term .c{color:var(--text-1)}
.term .o{color:var(--text-2)}
.term .caret{display:inline-block;width:9px;height:18px;background:var(--accent);vertical-align:middle;animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}

/* ================= TECH SPEC ================= */
.spec-layout{display:grid;grid-template-columns:5fr 7fr;gap:48px;flex:1;align-items:start;margin-top:24px}
.spec-title h2{font-size:48px;font-weight:800;line-height:1.05;letter-spacing:-.02em;margin:0 0 16px}
.spec-title p{font-size:16px;color:var(--text-2);line-height:1.65;max-width:36ch}
.spec-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.spec-kpi{padding-top:16px;border-top:2px solid var(--border-strong)}
.spec-kpi.accent{border-top-color:var(--accent)}
.spec-kpi .label{font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);margin-bottom:8px}
.spec-kpi .num{font-size:40px;font-weight:800;line-height:.9;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.spec-kpi .num .unit{font-size:16px;font-weight:400;opacity:.5;margin-left:2px}
.spec-kpi .note{font-size:13px;color:var(--text-2);margin-top:8px;line-height:1.5}
.spec-hero{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:end;margin-top:auto;padding-top:24px;border-top:1px solid var(--border)}
.spec-hero .hero-num{font-size:96px;font-weight:800;line-height:.82;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.spec-hero .hero-num .unit{font-size:28px;font-weight:400;opacity:.5}
.spec-hero .desc{font-size:14px;color:var(--text-2);line-height:1.6;max-width:48ch}

/* ================= TABLE ================= */
.t{width:100%;border-collapse:collapse;font-size:16px}
.t th,.t td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--border)}
.t th{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3);font-weight:600}
.t tr:hover td{background:var(--surface-2)}
.t td.num{font-variant-numeric:tabular-nums;text-align:right}
.up{color:var(--good)}.dn{color:var(--bad)}

/* ================= STACKED LEDGER ================= */
.ledger{display:flex;flex-direction:column;gap:0;flex:1;justify-content:center;margin-top:24px}
.ledger-row{display:grid;grid-template-columns:180px 1fr auto;gap:32px;align-items:center;padding:28px 0;border-top:1px solid var(--border)}
.ledger-row:last-child{border-bottom:1px solid var(--border)}
.ledger-num{font-size:56px;font-weight:800;line-height:.9;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.ledger-num .unit{font-size:20px;font-weight:400;opacity:.5;margin-left:4px}
.ledger-label h3{font-size:22px;font-weight:700;margin:0 0 4px;line-height:1.2}
.ledger-label p{font-size:14px;color:var(--text-2);margin:0;line-height:1.5;max-width:48ch}
.ledger-icon{width:48px;height:48px;border-radius:var(--radius-sm);background:var(--surface-2);display:flex;align-items:center;justify-content:center}
.ledger-icon svg{width:24px;height:24px;stroke:var(--accent);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.ledger-row.accent .ledger-num{color:var(--accent)}

/* ================= PROS / CONS ================= */
.pc{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:30px}
.pc .card h3{display:flex;align-items:center;gap:10px}
.pc .card h3 .b{display:inline-flex;width:36px;height:36px;border-radius:10px;align-items:center;justify-content:center;font-size:20px}
.pc .pro h3 .b{background:color-mix(in srgb,var(--good) 18%,transparent);color:var(--good)}
.pc .con h3 .b{background:color-mix(in srgb,var(--bad) 18%,transparent);color:var(--bad)}
.pc ul{padding-left:22px;line-height:1.8;color:var(--text-2)}
.pc .pro{border-top:3px solid var(--good)}
.pc .con{border-top:3px solid var(--bad)}

/* ================= PLATFORM CARDS ================= */
.plat-grid{display:grid;grid-template-columns:repeat(var(--cols,3),1fr);gap:20px;flex:1;margin-top:28px;align-content:center}
.plat{display:flex;flex-direction:column;justify-content:flex-end;padding:24px 0;border-top:2px solid var(--border-strong);gap:8px}
.plat .name{font-size:22px;font-weight:700;margin:0;line-height:1.2}
.plat .nb{font-size:44px;font-weight:800;line-height:.9;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.plat .nb .unit{font-size:16px;font-weight:400;opacity:.5;margin-left:4px}
.plat .sub{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-3)}
.plat .desc{font-size:14px;color:var(--text-2);line-height:1.5;margin-top:4px}
.plat.accent{border-top-color:var(--accent)}
.plat.accent .nb{color:var(--accent)}

/* ================= MATRIX GRID ================= */
.matrix{display:grid;grid-template-columns:repeat(var(--cols,6),1fr);gap:12px;margin-top:28px}
.mx{background:var(--surface-2);border-radius:var(--radius-sm);padding:18px 16px;display:flex;flex-direction:column;gap:6px}
.mx .tag{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--text-3)}
.mx h4{font-size:15px;font-weight:700;margin:0;line-height:1.2}
.mx p{font-size:12px;color:var(--text-2);margin:0;line-height:1.5}
.mx.accent{background:var(--accent);color:#fff}
.mx.accent .tag{color:rgba(255,255,255,.65)}
.mx.accent p{color:rgba(255,255,255,.8)}
.matrix-foot{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:end;margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}
.matrix-foot .big{font-size:72px;font-weight:800;line-height:.85;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.matrix-foot .big .unit{font-size:24px;font-weight:400;opacity:.5;margin-left:4px}

/* ================= MACARON GRID ================= */
:root{--mac-purple:#f4efff;--mac-pink:#fff0f6;--mac-blue:#eef4ff;--mac-green:#edfdf3;--mac-orange:#fff5ea}
.macaron-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.macaron-card{border-radius:var(--radius,16px);padding:28px;position:relative}
.macaron-card.soft-purple{background:var(--mac-purple)}
.macaron-card.soft-pink{background:var(--mac-pink)}
.macaron-card.soft-blue{background:var(--mac-blue)}
.macaron-card.soft-green{background:var(--mac-green)}
.macaron-card.soft-orange{background:var(--mac-orange)}
.macaron-card .label{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3);margin-bottom:10px}
.macaron-card .main{font-size:28px;font-weight:700;color:var(--text-1);margin-bottom:8px}
.macaron-card .desc{font-size:15px;color:var(--text-2);line-height:1.5}

/* ================= GLASS CARDS ================= */
.glass-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-top:32px}
.glass-card{position:relative;overflow:hidden;border-radius:var(--radius,16px);padding:28px 26px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(20px) saturate(160%);box-shadow:0 8px 32px rgba(0,0,0,.3),inset 0 1px 0 rgba(255,255,255,.08)}
.glass-card::before{content:'';position:absolute;top:0;left:0;right:0;height:50%;background:linear-gradient(180deg,rgba(255,255,255,.08),transparent);pointer-events:none}
.glass-card.warm{background:rgba(232,168,124,.06);border-color:rgba(232,168,124,.25)}
.glass-card.blue{background:rgba(126,184,218,.06);border-color:rgba(126,184,218,.25)}
.glass-card.green{background:rgba(126,211,164,.06);border-color:rgba(126,211,164,.25)}
.glass-card h3{margin:0 0 8px;font-size:20px;font-weight:700;color:var(--text-1)}
.glass-card p{margin:0;font-size:14px;line-height:1.6;color:var(--text-2)}
.glass-card .icon{font-size:48px;margin-bottom:14px;display:block}

/* ================= CYBER TRACE ================= */
:root{--ct-bg:#0e1018;--ct-border:rgba(126,211,164,.15);--ct-chrome:#1a1c24;--ct-green:#7ed3a4;--ct-cyan:#64dfdf;--ct-amber:#e9c58a;--ct-rose:#d4a0b9;--ct-red:#ff6b6b;--ct-dim:#6a7086}
.cyber-chrome{background:var(--ct-chrome);padding:10px 16px;border-radius:10px 10px 0 0;display:flex;align-items:center}
.cyber-chrome .dots{display:flex;gap:6px;margin-right:12px}
.cyber-chrome .dots span{width:10px;height:10px;border-radius:50%}
.cyber-chrome .dots span:nth-child(1){background:#ff5f57}
.cyber-chrome .dots span:nth-child(2){background:#febc2e}
.cyber-chrome .dots span:nth-child(3){background:#28c840}
.cyber-chrome .title{color:var(--ct-dim);font-size:12px;font-family:var(--font-mono)}
.cyber-code{background:var(--ct-bg);padding:22px 24px;border:1px solid var(--ct-border);border-top:none;border-radius:0 0 10px 10px;font-family:var(--font-mono);font-size:14px;line-height:1.7;color:var(--text-2,#ccc);overflow-x:auto;white-space:pre}
.cyber-code .prompt::before{content:'$ ';color:var(--ct-green);font-weight:700}
.cyber-code .kw{color:var(--ct-green)}
.cyber-code .fn{color:var(--ct-cyan)}
.cyber-code .str{color:var(--ct-amber)}
.cyber-code .cmt{color:var(--ct-dim);font-style:italic}
.cyber-code .var{color:var(--ct-rose)}
.cyber-code .hl{background:rgba(126,211,164,.1);display:inline-block;width:100%;margin:0 -16px;padding:0 16px}
.cyber-code .err{color:var(--ct-red)}

/* ================= DIFF ================= */
.diff{font-family:var(--font-mono);font-size:14px;line-height:1.6;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
.diff .ln{display:block;padding:2px 16px;white-space:pre}
.diff .add{background:rgba(26,175,108,.12);color:var(--good)}
.diff .del{background:rgba(224,68,90,.12);color:var(--bad)}
.diff .ctx{color:var(--text-2)}
.diff .hd{background:var(--surface-2);color:var(--text-3);padding:8px 16px;font-size:12px;letter-spacing:.08em;text-transform:uppercase;border-bottom:1px solid var(--border)}

/* ================= CTA ================= */
.cta .btn{display:inline-flex;align-items:center;gap:10px;padding:20px 32px;border-radius:999px;background:var(--accent);color:#0b1024;font-weight:700;font-size:20px;box-shadow:var(--shadow-lg);text-decoration:none;border:none;cursor:pointer}
.cta .btn.outline{background:transparent;color:var(--text-1);border:1.5px solid var(--border-strong)}

/* ================= COVER ================= */
.cover-bg{position:absolute;inset:0;overflow:hidden}
.cover-bg img{width:100%;height:100%;object-fit:cover}
.cover-bg .placeholder{width:100%;height:100%;background:radial-gradient(80% 60% at 30% 40%,rgba(59,108,255,.35),transparent 70%),radial-gradient(70% 50% at 75% 60%,rgba(192,132,252,.3),transparent 70%),linear-gradient(135deg,#0b1024,#1a2238)}
.cover-scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.25) 0%,rgba(0,0,0,.55) 100%)}
.cover-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;padding:56px 72px}
.cover-content .h1{color:#fff;font-size:64px;font-weight:900;line-height:1.08;letter-spacing:-.03em;margin:0}
.cover-content .lede{color:rgba(255,255,255,.82);font-size:20px;margin:18px 0 0;max-width:56ch}
.cover-content .pill{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.2)}
.cover-content .deck-header,.cover-content .deck-footer{color:rgba(255,255,255,.7)}

/* ================= COMPARISON ================= */
.vs{display:grid;grid-template-columns:1fr 90px 1fr;gap:28px;align-items:stretch;margin-top:30px}
.vs .side{padding:30px}
.vs .mid{font-size:56px;font-weight:800;color:var(--text-3);display:flex;align-items:center;justify-content:center}
.vs .bad-side{border-top:3px solid var(--bad)}
.vs .good-side{border-top:3px solid var(--good)}
.vs h3{font-size:24px}
.vs ul{padding-left:20px;font-size:15px;line-height:1.8;color:var(--text-2)}
.vs li::marker{color:var(--bad)}
.vs .good-side li::marker{color:var(--good)}

/* ================= CARDS ================= */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.card-soft{background:var(--surface-2);border:1px solid var(--border)}
.card-outline{background:transparent;border:1.5px solid var(--border-strong);box-shadow:none}
.card-accent{background:var(--surface);border-top:3px solid var(--accent)}
.card-hover{transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}

.pill{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:500;
  background:var(--surface-2);color:var(--text-2);border:1px solid var(--border)}
.pill-accent{background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);border-color:color-mix(in srgb,var(--accent) 28%,transparent)}

/* ================= BARS / DIVIDERS ================= */
.divider{height:1px;background:var(--border);width:100%}
.divider-accent{height:3px;width:72px;background:var(--accent);border-radius:2px}

/* ================= CHROME (header/footer/progress) ================= */
.deck-header{position:absolute;top:24px;left:40px;right:40px;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);letter-spacing:.12em;text-transform:uppercase;z-index:10;pointer-events:none}
.deck-footer{position:absolute;bottom:24px;left:40px;right:40px;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-3);z-index:10;pointer-events:none}
.slide-number::before{content:attr(data-current)}
.slide-number::after{content:" / " attr(data-total)}
.progress-bar{position:fixed;left:0;right:0;bottom:0;height:3px;background:transparent;z-index:20}
.progress-bar > span{display:block;height:100%;width:0;background:var(--accent);transition:width .3s var(--ease)}

/* ================= PRESENTER / OVERVIEW ================= */
.notes{display:none!important}
.notes-overlay{position:fixed;inset:auto 0 0 0;max-height:42vh;background:rgba(20,22,30,.95);color:#e8ebf4;
  padding:20px 32px;font-size:16px;line-height:1.6;border-top:1px solid rgba(255,255,255,.1);transform:translateY(100%);
  transition:transform .3s var(--ease);z-index:40;overflow:auto;font-family:var(--font-sans)}
.notes-overlay.open{transform:translateY(0)}
.overview{position:fixed;inset:0;background:rgba(10,12,18,.92);backdrop-filter:blur(12px);z-index:50;
  display:none;padding:40px;overflow:auto}
.overview.open{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-content:start}
.overview .thumb{background:var(--surface);border:1px solid var(--border);border-radius:12px;
  aspect-ratio:16/9;overflow:hidden;cursor:pointer;position:relative;color:var(--text-1);padding:16px;
  font-size:11px;transition:transform .2s var(--ease)}
.overview .thumb:hover{transform:scale(1.04)}
.overview .thumb .n{position:absolute;top:8px;left:10px;font-weight:700;font-size:14px;color:var(--text-3)}
.overview .thumb .t{position:absolute;bottom:10px;left:14px;right:14px;font-weight:600;color:var(--text-1)}

/* ================= PRESENTER VIEW ================= */
/* Presenter view opens in a separate popup window (S key).
 * All presenter styles are self-contained in the popup HTML generated by runtime.js.
 * The audience window (this file) is NOT affected — it stays as normal deck view.
 * Only the .notes class below is needed to hide speaker notes from audience. */

/* ================= UTILITY ================= */
.hidden{display:none!important}
.nowrap{white-space:nowrap}
.tr{text-align:right}.tc{text-align:center}.tl{text-align:left}
.uppercase{text-transform:uppercase;letter-spacing:.12em}

/* ================= PRINT ================= */
@media print{
  .slide{position:relative;opacity:1!important;transform:none!important;page-break-after:always;height:100vh}
  .deck-header,.deck-footer,.progress-bar,.notes-overlay,.overview{display:none!important}
}

/* ================= EDIT MODE ================= */
.edit-overlay{
  position:fixed;top:16px;right:16px;
  background:var(--accent);color:#fff;
  padding:6px 14px;border-radius:8px;
  font-size:13px;font-weight:600;z-index:100;
  pointer-events:none;display:none;
  font-family:var(--font-sans)
}
.deck-editing .edit-overlay{display:block}
.deck-editing [contenteditable]:hover{
  outline:1.5px dashed var(--accent);outline-offset:2px;cursor:text
}
.deck-editing [contenteditable]:focus{
  outline:2px solid var(--accent);outline-offset:2px;cursor:text
}

/* ================= SCROLL MODE (默认竖屏滚动视图) ================= */
/* 竖屏展示：所有 slide 可见并依次排列，每页通过 transform:scale 缩放至视口宽度 */
html.scroll-mode, body.scroll-mode {
  height: auto !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
}
body.scroll-mode .deck {
  position: relative !important;
  height: auto !important;
  overflow-x: hidden !important;
  overflow-y: visible !important;
  background: #1a1a1a;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px 0;
}
/* slide 包装容器：控制占位高度 + 阴影 */
.slide-scroll-wrapper {
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,.45), 0 1px 6px rgba(0,0,0,.25);
  transition: box-shadow .3s ease;
}
/* 当前可视 slide 高亮（更深阴影 + accent 描边）*/
.slide-scroll-wrapper.scroll-active {
  box-shadow: 0 8px 48px rgba(0,0,0,.65), 0 2px 12px rgba(0,0,0,.35),
              0 0 0 2px var(--accent);
}
/* 禁用 scroll mode 下 slide 内所有入场动画，让元素直接呈现最终态 */
.scroll-mode .slide,
.scroll-mode .slide * {
  animation-duration: 0.001s !important;
  animation-delay: 0s !important;
}