/* =============================================================
   AI vs AI Live — design system
   ============================================================= */

:root{
  /* base */
  --bg-0:        #06080d;
  --bg-1:        #0a0d14;
  --bg-2:        #0e1320;
  --bg-3:        #131a2c;
  --bg-card:     rgba(18,24,39,.72);
  --bg-card-2:   rgba(22,29,46,.6);
  --line:        rgba(255,255,255,.07);
  --line-strong: rgba(255,255,255,.14);

  /* text */
  --t-0: #f4f6fb;
  --t-1: #d8def0;
  --t-2: #97a3bf;
  --t-3: #6a7896;

  /* brand */
  --claude:      #ffb86c;
  --claude-dim:  rgba(255,184,108,.18);
  --claude-bord: rgba(255,184,108,.4);

  --codex:       #5fd1ff;
  --codex-dim:   rgba(95,209,255,.18);
  --codex-bord:  rgba(95,209,255,.4);

  --violet:      #a78bfa;
  --violet-dim:  rgba(167,139,250,.16);

  --ok:    #5be7a9;
  --warn:  #ffce5b;
  --err:   #ff7a8a;

  /* radii */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 24px;

  /* shadow */
  --shadow-card: 0 1px 0 rgba(255,255,255,.05) inset, 0 30px 80px -40px rgba(0,0,0,.7);

  /* type */
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;

  /* layout */
  --max:     1240px;
  --pad-x:   clamp(16px, 4vw, 36px);
}

*,*::before,*::after{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
html{ background:var(--bg-0); color:var(--t-0); -webkit-text-size-adjust:100%; }
body{
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--t-1);
  min-height: 100dvh;
  position: relative;
  overflow-x: hidden;
  font-feature-settings: "ss01","cv11","cv02";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img,svg{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
button{ font: inherit; color: inherit; cursor: pointer; background:none; border:0; }
code, .mono{ font-family: var(--font-mono); font-size: .92em; }

/* selection */
::selection{ background: var(--violet-dim); color: #fff; }

/* =============================================================
   AMBIENT BACKGROUND
   ============================================================= */
.bg{ position: fixed; inset:0; z-index:-1; pointer-events:none; }
.bg__grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(transparent 0, transparent calc(100% - 1px), rgba(255,255,255,.04) calc(100% - 1px)),
    linear-gradient(90deg, transparent 0, transparent calc(100% - 1px), rgba(255,255,255,.04) calc(100% - 1px));
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 70%);
}
.bg__spot{ position:absolute; border-radius:50%; filter: blur(110px); opacity:.55; mix-blend-mode: screen; }
.bg__spot--amber{ width: 760px; height: 760px; background: radial-gradient(circle, rgba(255,140,60,.55), transparent 60%); top:-220px; left:-160px; }
.bg__spot--cyan { width: 760px; height: 760px; background: radial-gradient(circle, rgba(60,170,255,.55), transparent 60%); top:-260px; right:-200px; }
.bg__noise{
  position:absolute; inset:0; opacity:.06;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

/* =============================================================
   NAV
   ============================================================= */
.nav{
  position: sticky; top: 0; z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items:center;
  gap: 24px;
  padding: 14px var(--pad-x);
  background: linear-gradient(180deg, rgba(6,8,13,.85), rgba(6,8,13,.55) 70%, rgba(6,8,13,0));
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
}
.nav.is-stuck{ border-bottom-color: var(--line); }

.brand{ display: inline-flex; align-items:center; gap:10px; }
.brand__mark{ display:inline-flex; padding: 4px; border-radius:10px; background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); border:1px solid var(--line); }
.brand__text{ font-weight: 700; letter-spacing:-.01em; font-size: 16px; }
.brand__title{ color: var(--t-0); }
.brand__live{
  margin-left: 6px;
  padding: 2px 7px;
  font-size: 11px; letter-spacing:.14em; text-transform: uppercase;
  background: linear-gradient(135deg, var(--claude), var(--codex));
  color:#0a0d14;
  border-radius: 999px;
  font-weight: 800;
}
.brand--sm .brand__title{ font-size: 14px; }

.nav__links{ display:flex; gap:22px; justify-self:center; font-size: 14px; color: var(--t-2); }
.nav__links a{ position:relative; padding: 6px 2px; transition: color .2s; }
.nav__links a:hover{ color: var(--t-0); }
.nav__links a:hover::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px;
  background: linear-gradient(90deg, var(--claude), var(--codex)); border-radius: 2px;
}

.nav__cta{ display:flex; align-items:center; gap: 10px; }

.btn{
  --bg: rgba(255,255,255,.06);
  --bord: rgba(255,255,255,.12);
  display:inline-flex; align-items:center; gap:8px;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 600; font-size: 14px; letter-spacing: -.005em;
  background: var(--bg);
  border: 1px solid var(--bord);
  color: var(--t-0);
  transition: transform .15s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-1px); }
.btn--ghost{ background: transparent; border-color: var(--line-strong); color: var(--t-1); }
.btn--ghost:hover{ background: rgba(255,255,255,.04); color: var(--t-0); }
.btn--primary{
  background: linear-gradient(135deg, #ffb86c 0%, #ff7a50 50%, #5fd1ff 100%);
  background-size: 200% 100%;
  background-position: 0% 0%;
  color: #0a0d14;
  border-color: transparent;
  box-shadow: 0 10px 30px -12px rgba(255,140,60,.5), 0 6px 18px -10px rgba(60,170,255,.5);
}
.btn--primary:hover{ background-position: 100% 0%; }
.btn--lg{ padding: 14px 20px; font-size: 15px; border-radius: 12px; }
.btn__dot{
  width:8px; height:8px; border-radius:50%;
  background:#0a0d14; box-shadow: 0 0 0 3px rgba(10,13,20,.18);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{ opacity:.5 } 50%{ opacity:1 } }

.nav__menu{ display:none; flex-direction:column; gap:4px; padding:10px; border:1px solid var(--line-strong); border-radius:8px; }
.nav__menu span{ width:18px; height:2px; background: var(--t-0); display:block; }

.nav__mobile{
  grid-column: 1 / -1;
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 14px 4px 4px;
  border-top: 1px solid var(--line);
}
.nav__mobile a{ padding: 10px 6px; color: var(--t-1); font-size: 15px; }
.nav__mobile .btn{ width: 100%; justify-content:center; margin-top:6px; }

@media (max-width: 880px){
  .nav__links{ display:none; }
  .nav__cta .btn--ghost{ display:none; }
  .nav__menu{ display:inline-flex; }
  .nav__mobile[data-open="true"]{ display:flex; }
}

/* =============================================================
   LAYOUT PRIMITIVES
   ============================================================= */
main{ max-width: var(--max); margin: 0 auto; padding: 0 var(--pad-x) 80px; }

.section{ padding: 100px 0 0; scroll-margin-top: 80px; }
.section__head{ max-width: 720px; margin: 0 auto 32px; text-align:center; }
.section__eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size: 11px; letter-spacing:.18em; text-transform: uppercase;
  color: var(--t-2);
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
}
.eyebrow__dot{ width:7px; height:7px; border-radius:50%; background: var(--t-3); }
.eyebrow__dot--live{
  background: #ff5d6c;
  box-shadow: 0 0 0 0 rgba(255,93,108,.6);
  animation: dotPulse 1.4s ease-out infinite;
}
@keyframes dotPulse{ 0%{ box-shadow: 0 0 0 0 rgba(255,93,108,.6) } 80%{ box-shadow: 0 0 0 8px rgba(255,93,108,0) } 100%{ box-shadow: 0 0 0 0 rgba(255,93,108,0) } }

.section__title{
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin: 14px 0 10px;
  color: var(--t-0);
  font-weight: 700;
}
.section__sub{ color: var(--t-2); margin: 0; font-size: 16px; }

/* =============================================================
   HERO
   ============================================================= */
.hero{
  display: grid;
  grid-template-columns: 1.1fr .95fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  padding-top: 56px;
  min-height: 86vh;
}
@media (max-width: 980px){ .hero{ grid-template-columns: 1fr; min-height: auto; padding-top: 36px; } }

.livepill{
  display:inline-flex; align-items:center; gap:10px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255,93,108,.08);
  border: 1px solid rgba(255,93,108,.3);
  color: #ffd5db;
  font-size: 12px; letter-spacing:.1em; font-weight: 700;
}
.livepill__dot{
  width: 8px; height: 8px; background: #ff5d6c; border-radius:50%;
  box-shadow: 0 0 0 0 rgba(255,93,108,.7);
  animation: dotPulse 1.4s ease-out infinite;
}
.livepill__sep{ color: rgba(255,255,255,.3); }
.livepill__meta{ color: var(--t-1); font-weight: 500; letter-spacing:.04em; }

.hero__title{
  font-size: clamp(40px, 7.4vw, 84px);
  line-height: 1.02;
  letter-spacing: -.035em;
  margin: 22px 0 18px;
  color: var(--t-0);
  font-weight: 800;
}
.hero__title--grad{
  background: linear-gradient(120deg, #ffb86c 0%, #ff7a50 30%, #a78bfa 60%, #5fd1ff 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  background-size: 200% auto;
  animation: hueShift 9s ease-in-out infinite;
}
@keyframes hueShift{ 0%,100%{ background-position: 0% 50% } 50%{ background-position: 100% 50% } }

.hero__sub{
  font-size: clamp(16px, 1.7vw, 19px);
  color: var(--t-2);
  max-width: 56ch;
  margin: 0 0 28px;
}
.hero__actions{ display:flex; flex-wrap:wrap; gap: 12px; margin-bottom: 36px; }

.hero__stats{
  list-style:none; padding:0; margin:0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  border-top: 1px solid var(--line); padding-top: 24px; max-width: 560px;
}
.hero__stats li{ display:flex; flex-direction:column; gap: 2px; }
.hero__stats b{ font-size: 22px; color: var(--t-0); font-weight: 700; letter-spacing: -.01em; }
.hero__stats span{ font-size: 11px; color: var(--t-3); text-transform: uppercase; letter-spacing:.14em; }

@media (max-width: 520px){ .hero__stats{ grid-template-columns: repeat(2,1fr); } }

/* BROADCAST */
.broadcast{
  position: relative;
  border-radius: var(--r-xl);
  background: linear-gradient(160deg, rgba(15,21,36,.95), rgba(10,13,22,.85));
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-card), 0 60px 120px -50px rgba(0,0,0,.8);
  overflow: hidden;
}
.broadcast::before{
  content:""; position:absolute; inset:0; border-radius: inherit; padding: 1px;
  background: linear-gradient(135deg, var(--claude-bord), transparent 30%, transparent 70%, var(--codex-bord));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events:none;
}
.broadcast__bar{
  display: grid; grid-template-columns: auto 1fr auto;
  align-items:center; gap: 12px;
  padding: 12px 16px;
  background: rgba(255,255,255,.02);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 12px; color: var(--t-2);
}
.broadcast__lights{ display:inline-flex; gap: 6px; }
.broadcast__lights span{ width:11px; height:11px; border-radius: 50%; background: #2c364a; }
.broadcast__lights span:nth-child(1){ background:#ff5f57 } .broadcast__lights span:nth-child(2){ background:#febc2e } .broadcast__lights span:nth-child(3){ background:#28c840 }
.broadcast__title{ text-align:center; }
.broadcast__viewers{ display:inline-flex; align-items:center; gap:6px; color: var(--t-1); }

.broadcast__stage{
  display: grid; grid-template-columns: 1fr auto 1fr;
  align-items: stretch; gap: 0;
  padding: 22px 18px;
  background:
    radial-gradient(ellipse at 25% 0%, rgba(255,184,108,.07), transparent 60%),
    radial-gradient(ellipse at 75% 100%, rgba(95,209,255,.08), transparent 60%);
}

.agent{
  display: grid; grid-template-columns: auto 1fr auto;
  align-items:center; gap: 12px;
  padding: 14px;
  border-radius: 14px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line);
}
.agent--claude{ border-color: var(--claude-bord); box-shadow: 0 0 0 1px var(--claude-bord) inset, 0 12px 30px -16px rgba(255,140,60,.35); }
.agent--codex{  border-color: var(--codex-bord);  box-shadow: 0 0 0 1px var(--codex-bord)  inset, 0 12px 30px -16px rgba(60,170,255,.35); }

.agent__avatar{ position:relative; display:inline-flex; padding: 4px; border-radius: 50%; background: rgba(0,0,0,.4); border: 1px solid var(--line); }
.agent__avatar--sm{ padding:2px; }

.agent__name{ font-weight: 700; color: var(--t-0); letter-spacing:-.01em; font-size: 15px; }
.agent__status{
  display:inline-flex; align-items:center; gap:6px;
  font-family: var(--font-mono); font-size: 11.5px; color: var(--t-2);
}
.agent__pulse{
  width: 6px; height: 6px; border-radius:50%; background: var(--ok);
  box-shadow: 0 0 0 0 rgba(91,231,169,.6);
  animation: dotPulse 1.4s ease-out infinite;
}
.agent__score{ font-family: var(--font-mono); font-size: 28px; font-weight: 700; color: var(--t-0); letter-spacing: -.02em; }
.agent--claude .agent__score{ color: var(--claude); }
.agent--codex .agent__score{ color: var(--codex); }

.vs{
  align-self:center;
  margin: 0 14px;
  padding: 8px 12px;
  font-family: var(--font-mono); font-weight: 800; letter-spacing: .12em;
  color: var(--t-1);
  background: linear-gradient(135deg, var(--claude-dim), var(--codex-dim));
  border-radius: 8px;
  border: 1px solid var(--line);
}

.broadcast__ticker{
  display: grid; grid-template-columns: auto 1fr;
  gap: 12px; align-items:center;
  padding: 12px 18px;
  font-family: var(--font-mono); font-size: 12.5px;
  background: rgba(0,0,0,.35);
  border-top: 1px solid var(--line);
  color: var(--t-1);
}
.ticker__time{ color: var(--violet); font-weight: 700; }
.ticker__text{ overflow:hidden; white-space: nowrap; text-overflow: ellipsis; }

@media (max-width: 560px){
  .broadcast__stage{ grid-template-columns: 1fr; gap: 12px; }
  .vs{ justify-self: center; }
}

/* =============================================================
   LIVE BATTLE DASHBOARD
   ============================================================= */
.dash{
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 22px;
}
@media (max-width: 980px){ .dash{ grid-template-columns: 1fr; } }

.pane{
  position: relative;
  border-radius: var(--r-lg);
  background: var(--bg-card);
  border: 1px solid var(--line);
  padding: 18px;
  display:flex; flex-direction: column; gap: 16px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-card);
}
.pane::before{
  content:""; position:absolute; inset:0; border-radius:inherit; padding:1px;
  background: linear-gradient(180deg, transparent, transparent);
  pointer-events:none;
}
.pane--claude{ border-color: rgba(255,184,108,.22); }
.pane--claude::before{ background: linear-gradient(180deg, rgba(255,184,108,.55), transparent 70%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.pane--codex{ border-color: rgba(95,209,255,.22); }
.pane--codex::before{  background: linear-gradient(180deg, rgba(95,209,255,.55), transparent 70%); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }

.pane__head{ display:flex; align-items:center; justify-content: space-between; gap: 16px; }
.pane__id{ display:flex; align-items:center; gap:12px; }
.pane__name{ font-weight: 700; color: var(--t-0); letter-spacing: -.01em; }
.pane__model{ font-family: var(--font-mono); font-size: 11.5px; color: var(--t-3); }

.state{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 11px; font-weight: 700; letter-spacing: .12em;
  background: rgba(91,231,169,.08);
  border: 1px solid rgba(91,231,169,.28);
  color: var(--ok);
}
.state__dot{
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 rgba(91,231,169,.6);
  animation: dotPulse 1.4s ease-out infinite;
}

.pane__metrics{
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 12px; border-radius: 12px;
  background: rgba(0,0,0,.3);
  border: 1px solid var(--line);
}
.pane__metrics > div{ display:flex; flex-direction: column; align-items: flex-start; gap: 2px; }
.m__num{ font-family: var(--font-mono); font-weight: 700; color: var(--t-0); font-size: 18px; letter-spacing: -.01em; }
.m__lbl{ font-size: 10.5px; color: var(--t-3); text-transform: uppercase; letter-spacing: .14em; }

/* terminal */
.terminal{
  border-radius: 12px;
  background: #05080f;
  border: 1px solid var(--line);
  padding: 14px 14px 12px;
  overflow: auto;
  max-height: 220px;
  scrollbar-width: thin;
}
.term__body{
  margin:0; font-family: var(--font-mono); font-size: 12.5px; color: var(--t-1);
  white-space: pre-wrap; word-break: break-word;
}
.term__line{ display:block; }
.term__line--dim{ color: var(--t-3); }
.term__line--ok { color: var(--ok); }
.term__line--warn{ color: var(--warn); }
.term__line--err{ color: var(--err); }
.term__prompt{ color: var(--claude); font-weight: 700; }
.term__prompt--codex{ color: var(--codex); }
.term__cursor{
  display:inline-block; width:.55em; height:1em; vertical-align:-2px;
  background: var(--t-1); animation: blink 1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity: 0 } }

/* diff */
.pane__diff, .diff{
  border-radius: 12px;
  background: #05080f;
  border: 1px solid var(--line);
  overflow: hidden;
}
.diff__head{
  padding: 8px 12px;
  font-family: var(--font-mono); font-size: 12px; color: var(--t-2);
  display: flex; align-items:center; gap: 8px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.02);
}
.diff__pill{
  display:inline-flex; align-items:center; padding: 1px 8px; border-radius: 999px;
  font-family: var(--font-mono); font-size: 11px; font-weight: 700;
}
.diff__pill--add{ background: rgba(91,231,169,.13); color: var(--ok); border:1px solid rgba(91,231,169,.3); }
.diff__pill--rem{ background: rgba(255,122,138,.13); color: var(--err); border:1px solid rgba(255,122,138,.3); }
.diff__body{
  margin:0; padding: 8px 0; font-family: var(--font-mono); font-size: 12.2px; line-height: 1.55;
}
.diff__line{ display:block; padding: 0 12px; }
.diff__line--add{ background: rgba(91,231,169,.08); color: #b6f2d4; box-shadow: inset 3px 0 0 var(--ok); }
.diff__line--rem{ background: rgba(255,122,138,.08); color: #ffc4cc; box-shadow: inset 3px 0 0 var(--err); }
.diff__line--ctx{ color: var(--t-2); }
.diff--big .diff__body{ font-size: 13px; line-height: 1.65; }

/* =============================================================
   BRIEF
   ============================================================= */
.brief{
  position: relative;
  border-radius: var(--r-xl);
  background: linear-gradient(180deg, rgba(167,139,250,.06), rgba(255,255,255,.01));
  border: 1px solid var(--line-strong);
  padding: clamp(20px, 3vw, 32px);
  box-shadow: var(--shadow-card);
}
.brief::after{
  content:""; position:absolute; left:0; right:0; top:0; height: 2px;
  background: linear-gradient(90deg, var(--claude), var(--violet), var(--codex));
  border-radius: var(--r-xl) var(--r-xl) 0 0;
}
.brief__head{ display:flex; align-items:center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.brief__tag{
  font-family: var(--font-mono); font-size: 11px; letter-spacing:.14em;
  color: var(--violet);
  background: var(--violet-dim);
  border: 1px solid rgba(167,139,250,.3);
  padding: 4px 10px; border-radius: 999px;
}
.brief__deadline{ display:inline-flex; align-items:center; gap:6px; font-size: 12px; color: var(--t-2); font-family: var(--font-mono); }

.brief__title{
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: -.02em;
  margin: 4px 0 14px;
  color: var(--t-0); font-weight: 700;
}
.brief__body p{ margin: 0 0 18px; color: var(--t-1); font-size: 15.5px; max-width: 80ch; }

.brief__cols{
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  margin-top: 18px;
}
.brief__cols h4{ font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--t-3); margin: 0 0 8px; }
.brief__cols ul{ list-style:none; padding:0; margin:0; display: grid; gap: 6px; }
.brief__cols li{ font-size: 14px; color: var(--t-1); padding-left: 16px; position:relative; }
.brief__cols li::before{ content:""; position:absolute; left:0; top: 9px; width:6px; height:6px; border-radius: 50%; background: linear-gradient(135deg, var(--claude), var(--codex)); }
.brief__cols code{ background: rgba(255,255,255,.06); padding: 1px 5px; border-radius: 4px; }
.brief__cols b{ color: var(--t-0); }

@media (max-width: 720px){ .brief__cols{ grid-template-columns: 1fr; } }

/* =============================================================
   TIMELINE
   ============================================================= */
.timeline{
  list-style:none; padding:0; margin: 0 auto; max-width: 920px;
  display: grid; gap: 14px;
  position: relative;
}
.tl{
  display: grid;
  grid-template-columns: 90px 28px 1fr;
  align-items: stretch;
  gap: 12px;
}
.tl__time{
  font-family: var(--font-mono); font-size: 12.5px; color: var(--violet);
  text-align: right;
  padding-top: 12px;
}
.tl__rail{ position:relative; display:flex; justify-content:center; }
.tl__rail::before{
  content:""; position:absolute; top:0; bottom:-14px; left:50%; transform: translateX(-50%);
  width: 2px; background: linear-gradient(180deg, var(--line) 0%, var(--line-strong) 50%, transparent 100%);
}
.tl:last-child .tl__rail::before{ bottom: 50%; }
.tl__node{
  position: relative; z-index: 1;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg-2); border: 2px solid var(--t-3);
  margin-top: 14px;
}
.tl--claude .tl__node{ border-color: var(--claude); box-shadow: 0 0 0 4px rgba(255,184,108,.12); }
.tl--codex  .tl__node{ border-color: var(--codex);  box-shadow: 0 0 0 4px rgba(95,209,255,.12); }
.tl__node--start{ background: linear-gradient(135deg, var(--claude), var(--codex)); border-color: transparent; }

.tl__card{
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  transition: transform .2s ease, border-color .2s ease;
}
.tl__card:hover{ transform: translateY(-1px); border-color: var(--line-strong); }
.tl--claude .tl__card{ border-left: 2px solid var(--claude); }
.tl--codex  .tl__card{ border-left: 2px solid var(--codex); }
.tl--start .tl__card{ border-left: 2px solid var(--violet); background: linear-gradient(180deg, var(--violet-dim), transparent 90%); }

.tl__who{ font-size: 12px; color: var(--t-3); letter-spacing: .12em; text-transform: uppercase; font-weight: 700; }
.tl--claude .tl__who{ color: var(--claude); }
.tl--codex  .tl__who{ color: var(--codex); }
.tl--start  .tl__who{ color: var(--violet); }
.tl__what{ color: var(--t-0); font-weight: 600; margin: 4px 0 4px; }
.tl__what code{ background: rgba(255,255,255,.06); padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }
.tl__meta{ font-family: var(--font-mono); font-size: 12px; color: var(--t-3); }

@media (max-width: 600px){
  .tl{ grid-template-columns: 64px 22px 1fr; }
  .tl__time{ font-size: 11.5px; }
}

/* =============================================================
   SCOREBOARD
   ============================================================= */
.score{ display:grid; gap: 24px; }

.score__totals{
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 14px;
  align-items: center;
  padding: 22px;
  border-radius: var(--r-xl);
  background: linear-gradient(180deg, rgba(255,255,255,.03), transparent);
  border: 1px solid var(--line-strong);
}
.total{ display:flex; flex-direction: column; gap: 8px; padding: 8px 14px; }
.total--claude{ text-align: right; }
.total__label{ font-size: 12px; color: var(--t-2); letter-spacing: .1em; text-transform: uppercase; font-weight: 700; }
.total--claude .total__label{ color: var(--claude); }
.total--codex  .total__label{ color: var(--codex); }
.total__num{ font-family: var(--font-mono); font-size: clamp(46px, 7vw, 72px); line-height:1; color: var(--t-0); font-weight: 800; letter-spacing:-.04em; }
.total__num small{ font-size: .35em; color: var(--t-3); margin-left:6px; vertical-align: super; }
.total__bar{ height: 8px; border-radius: 999px; background: rgba(255,255,255,.06); overflow: hidden; position: relative; }
.total__bar span{ display:block; height:100%; border-radius: inherit; transition: width 1.2s cubic-bezier(.2,.7,.2,1); }
.total--claude .total__bar span{ background: linear-gradient(90deg, var(--claude), #ff8e54); margin-left: auto; }
.total--codex  .total__bar span{ background: linear-gradient(90deg, var(--codex), #3b8fd6); }

.total__vs{ text-align:center; padding: 0 12px; }
.total__delta{
  font-family: var(--font-mono); font-weight: 800; font-size: 28px;
  background: linear-gradient(135deg, var(--codex), var(--claude));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.total__deltalbl{ font-size: 10px; color: var(--t-3); letter-spacing: .14em; }

.metrics{
  width:100%; border-collapse: separate; border-spacing: 0;
  border-radius: var(--r-lg); overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-card);
}
.metrics th, .metrics td{
  padding: 14px 14px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.metrics tr:last-child td{ border-bottom: 0; }
.metrics th{
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--t-3);
  background: rgba(255,255,255,.03); font-weight: 700;
}
.metrics__claude{ color: var(--claude); }
.metrics__codex{ color: var(--codex); }

.bar{
  display:grid; grid-template-columns: 1fr auto; align-items:center; gap: 10px;
  height: 22px;
}
.bar__fill{
  height: 8px; border-radius: 999px;
  background: rgba(255,255,255,.06);
  position: relative;
  display:block;
  transition: width 1.2s cubic-bezier(.2,.7,.2,1);
}
.bar__fill--claude{ background: linear-gradient(90deg, rgba(255,184,108,.95), rgba(255,140,60,.95)); box-shadow: 0 0 18px -4px rgba(255,184,108,.6); }
.bar__fill--codex { background: linear-gradient(90deg, rgba(95,209,255,.95), rgba(59,143,214,.95)); box-shadow: 0 0 18px -4px rgba(95,209,255,.6); }
.bar b{ font-family: var(--font-mono); color: var(--t-0); min-width: 44px; text-align: right; font-weight: 700; }

.lead{
  display:inline-flex; padding: 3px 8px; border-radius: 6px; font-family: var(--font-mono); font-size: 12px; font-weight: 700;
}
.lead--claude{ color: var(--claude); background: var(--claude-dim); }
.lead--codex{  color: var(--codex);  background: var(--codex-dim); }

@media (max-width: 760px){
  .score__totals{ grid-template-columns: 1fr; text-align: center; }
  .total--claude{ text-align: center; }
  .total--claude .total__bar span{ margin: 0 auto; }
  .metrics th:nth-child(2), .metrics td:nth-child(2),
  .metrics th:nth-child(5), .metrics td:nth-child(5){ display: none; }
}

/* =============================================================
   ARTIFACTS
   ============================================================= */
.artifacts{
  border-radius: var(--r-xl);
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.artifacts__tabs{
  display:flex; align-items:center; gap: 4px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.02);
  flex-wrap: wrap;
}
.tab{
  padding: 8px 14px; border-radius: 8px;
  font-size: 13px; color: var(--t-2); font-weight: 600;
  border: 1px solid transparent;
  transition: background .2s, color .2s, border-color .2s;
}
.tab:hover{ color: var(--t-0); background: rgba(255,255,255,.04); }
.tab.is-active{
  background: rgba(255,255,255,.07); color: var(--t-0); border-color: var(--line-strong);
}
.artifacts__sideToggle{
  margin-left: auto;
  display:inline-flex;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 3px;
  background: rgba(0,0,0,.4);
}
.side{
  padding: 6px 14px; border-radius: 999px; font-size: 12px; color: var(--t-2); font-weight: 700; letter-spacing: .04em;
}
.side.is-active[data-side="claude"]{ background: var(--claude); color:#1a0f06; }
.side.is-active[data-side="codex"]{  background: var(--codex);  color:#03161e; }

.artifacts__panel{ padding: 18px; }

.browser{
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  overflow: hidden;
  background: #05080f;
}
.browser__bar{
  display:flex; align-items:center; gap: 10px;
  padding: 8px 12px;
  background: #0a0f1a; border-bottom: 1px solid var(--line);
}
.browser__lights{ display:inline-flex; gap: 6px; }
.browser__lights span{ width:11px; height:11px; border-radius: 50%; }
.browser__lights span:nth-child(1){ background:#ff5f57 } .browser__lights span:nth-child(2){ background:#febc2e } .browser__lights span:nth-child(3){ background:#28c840 }
.browser__url{
  flex: 1;
  text-align: center;
  font-family: var(--font-mono); font-size: 12px; color: var(--t-2);
  background: rgba(255,255,255,.04); border-radius: 6px; padding: 4px 10px;
  border: 1px solid var(--line);
}
.browser__viewport{ aspect-ratio: 16 / 9.2; background: #06090f; }

.filetree{
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  font-family: var(--font-mono); font-size: 13px;
}
.filetree__col{
  border: 1px solid var(--line); border-radius: 12px; padding: 14px;
  background: rgba(255,255,255,.02);
}
.filetree__head{ font-weight: 700; color: var(--t-0); margin-bottom: 8px; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
.filetree ul{ list-style: none; padding-left: 14px; margin: 0; }
.filetree__col > ul{ padding-left: 0; }
.filetree li{ padding: 3px 0; color: var(--t-1); display:flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.filetree li.dir{ color: var(--codex); flex-direction: column; align-items: stretch; }
.filetree__col:first-child .filetree li.dir{ color: var(--claude); }
.filetree li span{ font-size: 11px; color: var(--t-3); font-weight: 500; }

@media (max-width: 720px){ .filetree{ grid-template-columns: 1fr; } }

/* =============================================================
   JUDGING
   ============================================================= */
.judging{
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 22px;
}
@media (max-width: 880px){ .judging{ grid-template-columns: 1fr; } }

.vote{
  border-radius: var(--r-xl);
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  padding: 22px;
  box-shadow: var(--shadow-card);
}
.vote__head{ display: flex; align-items:baseline; justify-content: space-between; gap: 14px; margin-bottom: 18px; }
.vote__title{ font-size: 18px; font-weight: 700; color: var(--t-0); }
.vote__sub{ font-family: var(--font-mono); color: var(--t-2); font-size: 13px; }
.vote__sub b{ color: var(--violet); }

.vote__panel{ display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.vote__btn{
  display: grid; grid-template-columns: auto 1fr auto;
  align-items:center; gap: 12px;
  padding: 14px;
  border-radius: 14px;
  background: rgba(255,255,255,.03);
  border: 1px solid var(--line-strong);
  text-align: left;
  transition: transform .15s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.vote__btn:hover{ transform: translateY(-1px); }
.vote__btn--claude:hover{ border-color: var(--claude); box-shadow: 0 12px 30px -16px rgba(255,140,60,.45); background: rgba(255,184,108,.06); }
.vote__btn--codex:hover{  border-color: var(--codex);  box-shadow: 0 12px 30px -16px rgba(60,170,255,.45);  background: rgba(95,209,255,.06); }
.vote__btn[aria-pressed="true"]{
  background: rgba(255,255,255,.06); border-color: var(--violet); box-shadow: 0 0 0 1px var(--violet) inset;
}
.vote__avatar{ display:inline-flex; padding: 4px; border-radius: 50%; background: rgba(0,0,0,.4); border: 1px solid var(--line); }
.vote__name{ font-weight: 700; color: var(--t-0); letter-spacing:-.01em; }
.vote__count{ font-family: var(--font-mono); color: var(--t-2); font-weight: 600; }

.vote__bars{
  display: flex; height: 10px; margin: 16px 0 8px;
  border-radius: 999px; overflow: hidden;
  background: rgba(255,255,255,.06);
}
.vote__bar{
  display:flex; align-items:center; justify-content: flex-end;
  padding: 0 10px; height: 100%;
  transition: width .8s cubic-bezier(.2,.7,.2,1);
}
.vote__bar span{ font-family: var(--font-mono); font-size: 10px; color: rgba(0,0,0,.85); font-weight: 800; }
.vote__bar--claude{ background: linear-gradient(90deg, var(--claude), #ff8e54); }
.vote__bar--codex { background: linear-gradient(90deg, #3b8fd6, var(--codex)); justify-content: flex-start; }
.vote__note{ color: var(--t-3); font-size: 12.5px; margin: 6px 0 0; }

.judges{
  border-radius: var(--r-xl);
  background: linear-gradient(180deg, rgba(167,139,250,.04), transparent 60%);
  border: 1px solid var(--line);
  padding: 22px;
}
.judges h3{ font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--t-3); margin: 0 0 10px; font-weight: 700; }
.judges h3:nth-of-type(2){ margin-top: 18px; }
.judges__list{ list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.judges__list li{ display:grid; grid-template-columns: auto 1fr; gap: 10px; align-items: baseline; color: var(--t-1); font-size: 14px; }
.judges__list b{ color: var(--t-0); margin-right: 4px; }
.check{
  display:inline-flex; align-items:center; justify-content: center;
  width: 22px; height: 22px; border-radius: 50%;
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
}
.check--ok{ color: var(--ok); background: rgba(91,231,169,.1); border: 1px solid rgba(91,231,169,.3); }
.check--dot{ color: var(--violet); background: var(--violet-dim); border: 1px solid rgba(167,139,250,.3); }

/* =============================================================
   LEADERBOARD
   ============================================================= */
.board{
  border-radius: var(--r-lg);
  background: var(--bg-card);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.board__head, .board__row{
  display: grid;
  grid-template-columns: 60px 1fr 160px 120px 60px 100px;
  align-items:center;
  gap: 10px;
  padding: 12px 16px;
}
.board__head{
  background: rgba(255,255,255,.03);
  border-bottom: 1px solid var(--line);
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--t-3); font-weight: 700;
}
.board__row{
  border-bottom: 1px solid var(--line);
  transition: background .2s, transform .15s;
}
.board__row:last-child{ border-bottom: 0; }
.board__row:hover{ background: rgba(255,255,255,.03); }
.board__row--claude{ box-shadow: inset 3px 0 0 var(--claude); }
.board__row--codex { box-shadow: inset 3px 0 0 var(--codex);  }
.board__row--tie   { box-shadow: inset 3px 0 0 var(--violet); }

.board__num{ font-family: var(--font-mono); color: var(--t-3); }
.board__name{ color: var(--t-0); font-weight: 600; display:flex; align-items:center; gap: 10px; }
.board__live{
  display:inline-flex; align-items:center;
  font-size: 10px; letter-spacing: .14em; font-weight: 800; padding: 2px 7px; border-radius: 999px;
  background: rgba(255,93,108,.1); color: #ffabb6; border: 1px solid rgba(255,93,108,.4);
}
.winchip{
  display:inline-flex; padding: 4px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 700;
}
.winchip--claude{ color: var(--claude); background: var(--claude-dim); border: 1px solid var(--claude-bord); }
.winchip--codex { color: var(--codex);  background: var(--codex-dim);  border: 1px solid var(--codex-bord);  }
.winchip--tie   { color: var(--violet); background: var(--violet-dim); border: 1px solid rgba(167,139,250,.3); }

.ta-r{ text-align: right; }

@media (max-width: 760px){
  .board__head, .board__row{
    grid-template-columns: 40px 1fr 110px 80px;
    gap: 8px; padding: 12px 12px;
  }
  .board__head > :nth-child(5), .board__head > :nth-child(6),
  .board__row > :nth-child(5),  .board__row > :nth-child(6){ display: none; }
  .board__name{ font-size: 14px; }
}

/* =============================================================
   FINAL CTA
   ============================================================= */
.cta{ padding: 100px 0 0; }
.cta__inner{
  position: relative;
  display: grid; grid-template-columns: 1.3fr auto; gap: 22px; align-items:center;
  padding: clamp(28px, 4vw, 44px);
  border-radius: var(--r-xl);
  background:
    radial-gradient(ellipse at 0% 0%, rgba(255,184,108,.16), transparent 50%),
    radial-gradient(ellipse at 100% 100%, rgba(95,209,255,.16), transparent 50%),
    rgba(20,26,44,.85);
  border: 1px solid var(--line-strong);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.cta__copy h2{ margin: 0 0 8px; font-size: clamp(24px, 3vw, 36px); letter-spacing:-.02em; color: var(--t-0); font-weight: 700; }
.cta__copy p{ margin: 0; color: var(--t-2); max-width: 60ch; }
.cta__actions{ display:flex; gap: 12px; flex-wrap: wrap; }

@media (max-width: 720px){ .cta__inner{ grid-template-columns: 1fr; } }

/* =============================================================
   FOOTER
   ============================================================= */
.foot{
  margin-top: 80px;
  border-top: 1px solid var(--line);
  padding-top: 36px;
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 24px;
  color: var(--t-2);
  font-size: 14px;
}
.foot__col h5{ font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--t-3); margin: 4px 0 12px; font-weight: 700; }
.foot__col ul{ list-style:none; padding:0; margin:0; display:grid; gap: 8px; }
.foot__col a:hover{ color: var(--t-0); }
.foot__tag{ margin: 12px 0 0; max-width: 30ch; color: var(--t-3); }

.foot__bot{
  grid-column: 1 / -1;
  display:flex; justify-content: space-between; align-items: center; gap: 12px;
  margin-top: 18px;
  padding-top: 18px; border-top: 1px solid var(--line);
  font-size: 12px; color: var(--t-3);
}
.foot__sm{ display:inline-flex; gap: 8px; align-items:center; }
.foot__dot{ color: var(--line-strong); }

@media (max-width: 800px){
  .foot{ grid-template-columns: 1fr 1fr; }
  .foot__bot{ flex-direction: column; align-items: flex-start; }
}

/* =============================================================
   reduced motion
   ============================================================= */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .hero__title--grad{ background-position: 0% 50%; }
}