:root{
  --paper:#14181B; --card:#20272D; --ink:#E9E7DE; --ink2:#A3AAB0;
  --line:#343B41;
  --alarm:#D1453B; --ok:#4CAF6B; --heat:#F4B400; --magma:#5B8DB8;
  --deep:#0E1114;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --disp:'Space Grotesk',sans-serif;
  --body:'Inter',system-ui,sans-serif;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --paper:#F4F2EC; --card:#FFFFFF; --ink:#1C2226; --ink2:#5A636B;
  --line:#DCD7CB;
  --alarm:#C13A2F; --ok:#2F7D4E; --heat:#7A5C00; --magma:#3D6A94;
  --deep:#FFFFFF;
  color-scheme:light;
}
:root[data-theme="light"] nav{background:rgba(244,242,236,.92)}
:root[data-theme="light"] #pca-svg text{fill:#5A636B}
.theme-btn{font-family:var(--mono);font-size:.66rem;text-transform:uppercase;letter-spacing:.08em;background:transparent;border:1px solid var(--line);color:var(--ink2);border-radius:999px;padding:8px 12px;cursor:pointer}
.theme-btn:active{border-color:var(--heat);color:var(--heat)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
.wrap{max-width:700px;margin:0 auto;padding:0 18px}
section{padding:44px 0 12px}
h1{font-family:var(--disp);font-weight:700;font-size:clamp(2.4rem,10vw,4rem);line-height:1.02;letter-spacing:-.02em}
h2{font-family:var(--disp);font-weight:700;font-size:clamp(1.6rem,6.5vw,2.2rem);letter-spacing:-.01em;margin-bottom:14px}
h3{font-size:1.02rem;font-weight:700;margin:18px 0 6px}
p{color:var(--ink2);margin-bottom:12px}
strong{color:var(--ink)}
a{color:var(--heat)}
.eyebrow{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;color:var(--heat);margin-bottom:8px}

/* signature: the threshold line */
.thr{border:none;border-top:2px dashed var(--alarm);position:relative;margin:34px 0 0}
.thr::after{content:attr(data-label);position:absolute;right:0;top:-11px;background:var(--paper);font-family:var(--mono);font-size:.66rem;color:var(--alarm);padding:0 6px;letter-spacing:.08em}

/* hero */
header{padding:44px 0 8px}
.badge{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.68rem;text-transform:uppercase;letter-spacing:.1em;color:var(--heat);border:1px solid rgba(244,180,0,.35);background:rgba(244,180,0,.08);border-radius:999px;padding:6px 14px;margin-bottom:18px}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--heat)}
.badge.win{color:var(--ok);border-color:rgba(76,175,107,.35);background:rgba(76,175,107,.08);border-radius:12px;margin:16px 0 0;text-align:left;line-height:1.6}
.badge.win::before{background:var(--ok);flex:0 0 auto}
.hero-sub{font-size:1.05rem;max-width:40ch;margin-top:14px}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.btn-primary{display:inline-block;font-family:var(--disp);font-weight:600;font-size:.95rem;background:var(--heat);color:var(--deep);border:2px solid var(--heat);border-radius:10px;padding:12px 24px;text-decoration:none}
.btn-ghost{display:inline-block;font-family:var(--disp);font-weight:600;font-size:.95rem;background:transparent;color:var(--ink);border:2px solid var(--line);border-radius:10px;padding:12px 24px;text-decoration:none}
.btn-primary:active{transform:scale(.97)} .btn-ghost:active{border-color:var(--heat);transform:scale(.97)}
.statgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:26px 0 6px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 6px;text-align:center;min-width:0}
.stat b{display:block;font-family:var(--disp);font-weight:700;font-size:clamp(1.25rem,5.5vw,2rem);line-height:1}
.stat span{font-family:var(--mono);font-size:.62rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink2)}
.stat.ok b{color:var(--ok)} .stat.pca b{color:var(--magma)} .stat.heat b{color:var(--heat)}

/* topbar + nav pills */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;max-width:700px;margin:0 auto}
.brand{font-family:var(--disp);font-weight:700;font-size:1.05rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em;display:flex;align-items:center;gap:9px}
.brand .mark{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--heat);color:var(--deep);font-family:var(--mono);font-weight:600;font-size:.8rem}
.brand span.tag{font-family:var(--mono);font-weight:400;font-size:.62rem;color:var(--ink2);letter-spacing:.08em;text-transform:uppercase}
.topbar .btn-primary{padding:8px 16px;font-size:.82rem;border-radius:8px}
nav{position:sticky;top:0;background:rgba(20,24,27,.9);backdrop-filter:blur(8px);z-index:50;border-bottom:1px solid var(--line)}
nav .wrap{display:flex;gap:8px;overflow-x:auto;padding:10px 18px;-ms-overflow-style:none;scrollbar-width:none}
nav .wrap::-webkit-scrollbar{display:none}
nav a{flex:0 0 auto;font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink2);text-decoration:none;padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:var(--card)}
nav a:active{color:var(--heat);border-color:var(--heat)}
nav a.here{background:var(--heat);border-color:var(--heat);color:var(--deep)}

/* front-page section cards */
.cards{display:grid;grid-template-columns:1fr;gap:12px;margin:18px 0}
@media(min-width:560px){.cards{grid-template-columns:1fr 1fr}}
.pcard{display:block;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;text-decoration:none;color:var(--ink)}
.pcard:active{border-color:var(--heat)}
.pcard .pnum{font-family:var(--mono);font-size:.64rem;text-transform:uppercase;letter-spacing:.1em;color:var(--heat)}
.pcard b{display:block;font-family:var(--disp);font-size:1.1rem;margin:6px 0 4px}
.pcard span{display:block;color:var(--ink2);font-size:.88rem;line-height:1.45}
.pcard .go-line{display:block;font-family:var(--mono);font-size:.66rem;color:var(--heat);margin-top:10px;text-transform:uppercase;letter-spacing:.08em}

/* pager: previous / next page links */
.pager{display:flex;gap:10px;justify-content:space-between;margin-top:36px;flex-wrap:wrap}
.pager a{flex:1 1 40%;text-align:center}

/* cards & figures */
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin:14px 0}
figure{margin:14px 0}
figure img{width:100%;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:zoom-in;display:block}
figcaption{font-family:var(--mono);font-size:.7rem;color:var(--ink2);margin-top:6px}
.tapnote{font-family:var(--mono);font-size:.64rem;color:var(--heat);text-transform:uppercase;letter-spacing:.08em}

/* model cards */
.mcard{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;margin:14px 0;position:relative}
.mcard .mtag{display:inline-block;font-family:var(--mono);font-size:.64rem;text-transform:uppercase;letter-spacing:.1em;border-radius:6px;padding:3px 10px;margin-bottom:10px}
.mcard.pca{border-left:4px solid var(--magma)}
.mcard.pca .mtag{background:rgba(91,141,184,.15);color:var(--magma);border:1px solid rgba(91,141,184,.4)}
.mcard.ae{border-left:4px solid var(--heat)}
.mcard.ae .mtag{background:rgba(244,180,0,.12);color:var(--heat);border:1px solid rgba(244,180,0,.4)}
.mcard h3{margin-top:0;font-family:var(--disp);font-size:1.2rem}
.steps{list-style:none;margin:10px 0 4px}
.steps li{padding:7px 0 7px 30px;position:relative;color:var(--ink2);font-size:.93rem}
.steps li b{color:var(--ink)}
.steps li::before{content:counter(step);counter-increment:step;position:absolute;left:0;top:7px;width:20px;height:20px;border-radius:50%;background:var(--paper);border:1px solid var(--line);font-family:var(--mono);font-size:.66rem;display:grid;place-items:center;color:var(--heat)}
.mcard.pca .steps li::before{color:var(--magma)}
.steps{counter-reset:step}

/* tables */
table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:.78rem;margin:10px 0}
th,td{padding:7px 8px;text-align:left;border-bottom:1px solid var(--line)}
th{font-size:.66rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink2)}
th.num,td.num{text-align:right}
.h2h td:nth-child(2){color:var(--heat)}
.h2h td:nth-child(3){color:var(--magma)}
.h2h td:first-child{color:var(--ink2)}

/* programme timetable */
.day{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:12px 0}
.day h3{margin:0 0 4px;font-family:var(--disp);font-size:1.05rem}
.day .dsub{font-family:var(--mono);font-size:.66rem;color:var(--heat);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px}
.day table{margin:4px 0 0}
.day td:first-child{color:var(--ink2);white-space:nowrap;width:56px;font-size:.72rem}
.day td b{color:var(--ink)}
.day .who{display:block;font-size:.68rem;color:var(--ink2)}

/* game */
.game-stage{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center;overflow:visible}
.game-stage img{width:min(230px,70%);height:auto;border-radius:8px;border:1px solid var(--line);object-fit:contain;display:block;margin:0 auto}
.g-hud{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:.72rem;color:var(--ink2);margin-bottom:10px}
#g-timer{color:var(--heat);font-weight:700;font-family:var(--disp);font-size:2rem;line-height:1;letter-spacing:-.01em;font-variant-numeric:tabular-nums}
.defect-guide{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0;text-align:center}
.defect-guide img{width:100%;border-radius:8px;border:1px solid var(--line);display:block}
.defect-guide b{display:block;font-family:var(--disp);font-size:.85rem;margin-top:6px}
.defect-guide span{font-family:var(--mono);font-size:.62rem;color:var(--ink2);line-height:1.35;display:block;margin-top:2px}
.dtype{display:inline-block;font-family:var(--disp);font-weight:600;background:rgba(244,180,0,.12);border:1px solid rgba(244,180,0,.4);color:var(--heat);border-radius:6px;padding:1px 8px;font-size:.85em}
.dtype.good{background:rgba(76,175,107,.12);border-color:rgba(76,175,107,.4);color:var(--ok)}
.game-btns{display:flex;gap:10px;justify-content:center;margin-top:14px;flex-wrap:wrap}
button{font-family:var(--mono);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;border-radius:10px;border:2px solid var(--ink);background:var(--card);color:var(--ink);padding:12px 22px;cursor:pointer}
button.ok{border-color:var(--ok);color:var(--ok)}
button.bad{border-color:var(--alarm);color:var(--alarm)}
button.go{background:var(--heat);border-color:var(--heat);color:var(--deep);margin-top:12px}
button:active{transform:scale(.97)}
.verdict{margin-top:14px;font-size:.92rem;overflow-wrap:break-word}
.verdict .right{color:var(--ok);font-weight:700}
.verdict .wrong{color:var(--alarm);font-weight:700}
.vs{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1fr);gap:4px;font-family:var(--mono);font-size:.76rem}
.vs>div{padding:8px 6px;border-radius:6px;min-width:0;overflow-wrap:break-word}
.vs-h{font-size:.62rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink2);padding-bottom:2px}
.vs-l{text-align:left;color:var(--ink2)}
.vs-you{background:var(--paper);border:1px solid var(--line);font-weight:600}
.vs-m{background:var(--heat);color:var(--deep)}

/* channel explorer */
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:6px;-ms-overflow-style:none;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:0 0 auto;font-family:var(--mono);font-size:.72rem;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);color:var(--ink2);cursor:pointer;text-transform:uppercase;letter-spacing:.04em}
.chip.on{background:var(--heat);border-color:var(--heat);color:var(--deep)}
.ch-view{margin-top:12px;text-align:center}
.ch-view img{width:min(260px,72%);border-radius:8px;border:1px solid var(--line)}
.ch-desc{font-size:.9rem;color:var(--ink2);max-width:42ch;margin:10px auto 0}

/* comparison bars */
.bars{margin:14px 0}
.bar-row{margin-bottom:14px}
.bar-label{display:flex;justify-content:space-between;font-family:var(--mono);font-size:.72rem;margin-bottom:4px}
.track{height:14px;background:var(--paper);border:1px solid var(--line);border-radius:7px;overflow:hidden;margin-bottom:4px}
.fill{height:100%;width:0;border-radius:7px;transition:width 1s cubic-bezier(.2,.7,.2,1)}
.fill.ae{background:var(--heat)}
.fill.pca{background:var(--magma)}
.legend{display:flex;gap:16px;font-family:var(--mono);font-size:.68rem;color:var(--ink2);margin-bottom:10px}
.dot{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:5px;vertical-align:-1px}

/* tabs */
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.tab{font-family:var(--mono);font-size:.7rem;padding:7px 12px;border-radius:8px;border:1px solid var(--line);background:var(--card);cursor:pointer;color:var(--ink2)}
.tab.on{background:var(--heat);color:var(--deep);border-color:var(--heat)}
.tabpane{display:none}
.tabpane.on{display:block}

/* code snippets */
details.code{background:var(--card);border:1px solid var(--line);border-radius:12px;margin:14px 0;overflow:hidden}
details.code summary{cursor:pointer;list-style:none;font-family:var(--mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--heat);padding:12px 16px;user-select:none;-webkit-user-select:none}
details.code summary::-webkit-details-marker{display:none}
details.code summary::before{content:"▸ "}
details.code[open] summary::before{content:"▾ "}
details.code pre{margin:0;padding:14px 16px;background:var(--deep);border-top:1px solid var(--line);overflow-x:auto;font-family:var(--mono);font-size:.7rem;line-height:1.6;color:var(--ink);tab-size:4}
details.code .src{display:block;font-family:var(--mono);font-size:.62rem;color:var(--ink2);padding:8px 16px;border-top:1px solid var(--line)}
.code .k{color:var(--magma)} .code .s{color:var(--ok)} .code .c{color:var(--ink2);font-style:italic} .code .n{color:var(--heat)} .code .f{color:var(--ink);font-weight:600}

/* limitations */
ul.lims{list-style:none}
ul.lims li{padding:10px 0 10px 26px;position:relative;color:var(--ink2);border-bottom:1px dashed var(--line);font-size:.93rem}
ul.lims li::before{content:"▸";position:absolute;left:6px;color:var(--heat)}

/* lightbox */
#lb{display:none;position:fixed;inset:0;background:rgba(15,17,20,.94);z-index:100;overflow:auto;-webkit-overflow-scrolling:touch}
#lb.on{display:block}
#lb img{width:170%;max-width:none;padding:40px 8px;display:block;margin:0 auto}
#lb .close{position:fixed;top:12px;right:12px;background:var(--heat);color:var(--deep);border:none;border-radius:999px;width:40px;height:40px;font-size:1.1rem;z-index:101}
@media(min-width:640px){#lb img{width:90%;max-width:1100px}}

footer{padding:40px 0 60px;color:var(--ink2);font-family:var(--mono);font-size:.7rem}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.fill{transition:none}}

/* first-place banner */
.winbanner{padding:0;background:linear-gradient(135deg,#002147 0%,#0b2f6b 55%,#0000CD 100%);color:#fff;border-bottom:1px solid rgba(255,255,255,.14)}
.winbanner .wrap{padding-top:26px;padding-bottom:26px}
.winbanner .wb-eyebrow{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:.66rem;text-transform:uppercase;letter-spacing:.16em;color:#fff;border:1px solid rgba(255,255,255,.45);border-radius:999px;padding:5px 12px;margin-bottom:14px}
.winbanner .wb-eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:#fff}
.winbanner h2.wb-title{font-family:var(--disp);font-weight:700;color:#fff;font-size:clamp(1.9rem,7.5vw,2.9rem);line-height:1.05;letter-spacing:-.01em;margin:0 0 8px}
.winbanner .wb-sub{font-family:var(--disp);font-weight:600;color:#fff;font-size:clamp(1rem,3.6vw,1.3rem);line-height:1.3;margin:0 0 10px}
.winbanner .wb-body{color:rgba(255,255,255,.86);font-size:.98rem;margin:0}
.winbanner .wb-meta{font-family:var(--mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:rgba(255,255,255,.75);margin:12px 0 0}