:root,[data-theme=warm]{--bg: #f7ecd8;--bg-elev: #fdf6e9;--surface: #fffaf0;--surface-2: #f3e7cf;--surface-3: #ebdcbe;--fill-1: rgba(74, 47, 14, .035);--fill-2: rgba(74, 47, 14, .06);--fill-3: rgba(74, 47, 14, .1);--inset: #f0e3c8;--inset-strong: #e7d6b4;--on-band: #fffaf0;--ink: #2a1f12;--ink-2: #4a3a26;--muted: #6f5c43;--mute-2: #9a866a;--line: #e6d6ba;--line-2: #d8c4a0;--line-strong: #c4ac82;--brand: #c8901a;--brand-deep: #a8770f;--brand-darker: #875e08;--brand-tint: #f4e3bd;--brand-tint-2: #faf0d6;--brand-glow: rgba(200, 144, 26, .34);--brand-line: rgba(168, 119, 15, .45);--brand-line-strong: rgba(168, 119, 15, .65);--brand-ring: rgba(168, 119, 15, .22);--brand-ring-2: rgba(168, 119, 15, .12);--arcadia-red: #cf2e29;--arcadia-red-glow: rgba(207, 46, 41, .3);--math: #2f6f9e;--math-tint: #d6e6f0;--math-deep: #245a82;--puzzle: #4f7a3f;--puzzle-tint: #dde9d3;--puzzle-deep: #3c6130;--training: #c8901a;--training-tint: #f4e3bd;--training-deep: #a8770f;--final: var(--brand);--final-tint: var(--brand-tint);--final-deep: var(--brand-deep);--ok: #4f7a3f;--ok-tint: #dde9d3;--warn: #a8770f;--warn-tint: #f4e3bd;--bad: #b4221d;--bad-tint: #f5d8d6;--font-display: "Cinzel", "Trajan Pro", Georgia, ui-serif, serif;--font-body: "Manrope", ui-sans-serif, -apple-system, system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;--sh-hairline: 0 1px 0 rgba(120, 84, 24, .05);--sh-1: 0 1px 0 #e6d6ba, 0 14px 28px -16px rgba(120, 84, 24, .3);--sh-2: 0 2px 0 #d8c4a0, 0 22px 44px -18px rgba(120, 84, 24, .34);--sh-3: 0 3px 0 #c4ac82, 0 30px 60px -20px rgba(120, 84, 24, .4);--sh-brand: 0 2px 0 var(--brand-darker), 0 14px 30px -10px var(--brand-glow);--sh-math: 0 0 0 1px rgba(47, 111, 158, .2), 0 12px 28px -12px rgba(47, 111, 158, .26)}[data-theme=dark]{--bg: #0d0e1a;--bg-elev: #14162a;--surface: #1a1c2e;--surface-2: #23263d;--surface-3: #2c2e47;--fill-1: rgba(255, 255, 255, .035);--fill-2: rgba(255, 255, 255, .06);--fill-3: rgba(255, 255, 255, .1);--inset: rgba(0, 0, 0, .28);--inset-strong: rgba(0, 0, 0, .42);--on-band: #f4ecd8;--ink: #e8dcc0;--ink-2: #cabd95;--muted: #8c8064;--mute-2: #645a44;--line: rgba(232, 220, 192, .1);--line-2: rgba(232, 220, 192, .16);--line-strong: rgba(232, 220, 192, .26);--brand: #d4a843;--brand-deep: #c0921f;--brand-darker: #936e12;--brand-tint: rgba(212, 168, 67, .18);--brand-tint-2: rgba(212, 168, 67, .08);--brand-glow: rgba(212, 168, 67, .45);--brand-line: rgba(212, 168, 67, .45);--brand-line-strong: rgba(212, 168, 67, .6);--brand-ring: rgba(212, 168, 67, .25);--brand-ring-2: rgba(212, 168, 67, .12);--arcadia-red: #e0342f;--arcadia-red-glow: rgba(224, 52, 47, .45);--math: #6f9fd0;--math-tint: rgba(111, 159, 208, .16);--math-deep: #9cc1e6;--puzzle: #8fb877;--puzzle-tint: rgba(143, 184, 119, .16);--puzzle-deep: #b0d199;--training: #e8c46a;--training-tint: rgba(232, 196, 106, .14);--training-deep: #f1d68c;--final: var(--brand);--final-tint: var(--brand-tint);--final-deep: var(--brand);--ok: #8fb877;--ok-tint: rgba(143, 184, 119, .16);--warn: #d4a843;--warn-tint: rgba(212, 168, 67, .14);--bad: #d65a52;--bad-tint: rgba(214, 90, 82, .16);--font-display: "Cinzel", "Trajan Pro", Georgia, ui-serif, serif;--sh-hairline: 0 1px 0 rgba(255, 255, 255, .03);--sh-1: 0 2px 0 rgba(0, 0, 0, .35), 0 12px 30px -10px rgba(0, 0, 0, .6);--sh-2: 0 4px 0 rgba(0, 0, 0, .4), 0 22px 48px -14px rgba(0, 0, 0, .7);--sh-3: 0 28px 64px -22px rgba(0, 0, 0, .85);--sh-brand: 0 0 0 1px rgba(212, 168, 67, .25), 0 12px 36px -8px var(--brand-glow);--sh-math: 0 0 0 1px rgba(111, 159, 208, .22), 0 12px 30px -10px rgba(111, 159, 208, .28)}:root{--text-xs: 12px;--text-sm: 13px;--text-md: 15px;--text-lg: 17px;--text-xl: 20px;--text-2xl: 26px;--text-3xl: 34px;--text-display: 52px;--s-1: 4px;--s-2: 8px;--s-3: 12px;--s-4: 16px;--s-5: 20px;--s-6: 24px;--s-8: 32px;--s-10: 40px;--s-14: 56px;--s-20: 80px;--r-sm: 10px;--r-md: 14px;--r-lg: 20px;--r-xl: 28px;--r-2xl: 36px;--r-pill: 999px;--ease: cubic-bezier(.16, 1, .3, 1);--ease-spring: 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3px;opacity:.5;mix-blend-mode:overlay}a{color:var(--brand);text-decoration:none;font-weight:600;transition:color var(--t-fast) var(--ease),text-shadow var(--t-fast) var(--ease)}a:hover{color:var(--brand-deep)}[data-theme=dark] a:hover{color:#ffd76b;text-shadow:0 0 12px var(--brand-glow)}button{font:600 var(--text-md) / 1 var(--font-body);cursor:pointer;border:none;background:none;color:inherit}::selection{background:var(--brand-tint);color:var(--brand)}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:6px;border:2px solid var(--bg)}::-webkit-scrollbar-thumb:hover{background:var(--line-strong)}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.001ms!important;transition-duration:.001ms!important}}.app-shell{position:relative;z-index:1;min-height:100dvh;display:flex;flex-direction:column}.app-topbar{display:flex;align-items:center;justify-content:space-between;padding:var(--s-4) var(--s-6);background:var(--topbar-bg, transparent);border-bottom:1px solid var(--line);position:relative;z-index:2}[data-theme=dark] .app-topbar{--topbar-bg: rgba(10, 6, 18, .4)}.brand{display:inline-flex;align-items:center;gap:var(--s-3);color:var(--ink)}.brand .glyph{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;flex-shrink:0;font-family:var(--font-display);font-weight:700;font-size:19px;line-height:1;color:var(--brand-deep);background:linear-gradient(180deg,var(--surface),var(--surface-2));border:1px solid var(--brand-line);box-shadow:var(--sh-hairline),inset 0 0 0 1px var(--brand-ring-2)}[data-theme=dark] .brand .glyph{color:var(--brand);background:linear-gradient(180deg,var(--surface-2),var(--surface));box-shadow:0 0 18px -4px var(--brand-glow),inset 0 0 0 1px var(--brand-ring)}.brand .glyph:after{content:"Σ"}.brand-wordmark{display:inline-flex;align-items:baseline;font-family:var(--font-display);font-weight:700;font-size:var(--text-xl);line-height:1;letter-spacing:.01em;color:var(--ink)}.brand-wordmark .edge{color:var(--arcadia-red);font-weight:800;font-size:1.22em;line-height:.8;text-shadow:0 0 16px var(--arcadia-red-glow)}.brand .sub{color:var(--muted);font-family:var(--font-mono);font-weight:500;font-size:10px;text-transform:uppercase;letter-spacing:.18em;padding-left:var(--s-3);margin-left:var(--s-1);border-left:1px solid var(--line-2);align-self:center}@media (max-width: 540px){.brand .sub{display:none}}.topbar-right{display:flex;align-items:center;gap:var(--s-4)}.content{flex:1;width:100%;max-width:1180px;margin:0 auto;padding:var(--s-8) var(--s-6) var(--s-14)}.content-hall{max-width:1360px}.center-stage{flex:1;display:grid;place-items:center;padding:var(--s-8) var(--s-6)}.h-display{font-family:var(--font-display);font-weight:700;font-size:clamp(40px,6.2vw,var(--text-display));line-height:1.08;letter-spacing:.005em;color:var(--ink);margin:0}[data-theme=dark] .h-display{text-shadow:0 0 28px var(--brand-ring),0 2px 12px rgba(0,0,0,.6)}.h1{font-family:var(--font-display);font-weight:700;font-size:var(--text-3xl);line-height:1.12;letter-spacing:.005em;color:var(--ink);margin:0}[data-theme=dark] .h1{text-shadow:0 0 18px var(--brand-ring-2)}.h2{font-family:var(--font-display);font-weight:600;font-size:var(--text-2xl);line-height:1.2;letter-spacing:-.008em;color:var(--ink);margin:0}.h3{font-family:var(--font-display);font-weight:600;font-size:var(--text-xl);line-height:1.3;color:var(--ink);margin:0}.lead{font-size:var(--text-lg);line-height:1.55;color:var(--ink-2);max-width:56ch}.eyebrow{display:inline-flex;align-items:center;gap:var(--s-2);font-family:var(--font-mono);font-weight:500;font-size:var(--text-xs);text-transform:uppercase;letter-spacing:.18em;color:var(--muted)}.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);box-shadow:0 0 10px var(--brand-glow);animation:emberPulse 2.4s ease-in-out infinite}@keyframes emberPulse{0%,to{opacity:1;box-shadow:0 0 10px var(--brand-glow)}50%{opacity:.6;box-shadow:0 0 4px var(--brand-glow)}}.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}.dim{color:var(--muted)}.mute{color:var(--mute-2)}.landing-stage{flex:1;display:grid;place-items:center;padding:var(--s-10) var(--s-6) var(--s-14)}.landing-hero{width:100%;max-width:1120px;display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:var(--s-10);align-items:center}@media (max-width: 860px){.landing-hero{grid-template-columns:1fr;gap:var(--s-8)}}.landing-copy{display:flex;flex-direction:column;gap:var(--s-5);min-width:0}.landing-motif{display:grid;place-items:center;min-width:0}.landing-motif>svg{width:100%;height:auto;max-width:480px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--s-2);padding:13px 22px;border-radius:var(--r-md);font-family:var(--font-body);font-weight:700;font-size:var(--text-md);letter-spacing:.04em;text-transform:uppercase;background:linear-gradient(180deg,var(--brand) 0%,var(--brand-deep) 100%);color:#1a1208;border:1px solid var(--brand-line-strong);box-shadow:0 0 0 1px var(--brand-ring),0 12px 28px -10px var(--brand-glow),inset 0 1px #ffffff40;transition:transform var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),filter var(--t-fast) var(--ease)}.btn:hover{filter:brightness(1.08);box-shadow:0 0 0 1px var(--brand-ring),0 18px 36px -10px var(--brand-glow),inset 0 1px #ffffff4d;transform:translateY(-1px)}.btn:active{transform:translateY(1px);box-shadow:0 0 0 1px var(--brand-ring),0 6px 14px -6px var(--brand-glow)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:grayscale(.4)}.btn.lg{padding:16px 28px;font-size:var(--text-lg);border-radius:var(--r-lg)}.btn.sm{padding:9px 14px;font-size:var(--text-sm);border-radius:var(--r-sm);box-shadow:0 2px 0 var(--brand-deep)}.btn.ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line-2);box-shadow:var(--sh-hairline);filter:none}.btn.ghost:hover{background:var(--brand-tint-2);border-color:var(--brand);box-shadow:0 0 18px -6px var(--brand-glow);filter:none}.btn.ghost:active{background:var(--brand-tint)}.btn.btn-md{padding:10px 18px;font-size:var(--text-md);border-radius:var(--r-md);text-transform:none;letter-spacing:0}.btn.subtle{background:var(--fill-2);color:var(--ink-2);border:1px solid var(--line);box-shadow:none;font-weight:600;text-transform:none;letter-spacing:0;filter:none}.btn.subtle:hover{background:var(--fill-3);transform:none;box-shadow:none;filter:none}.btn.subtle:active{transform:translateY(1px)}.link-btn{background:none;color:var(--muted);font-family:var(--font-body);font-size:var(--text-sm);font-weight:500;transition:color var(--t-fast) var(--ease)}.link-btn:hover{color:var(--ink)}.icon-btn{width:36px;height:36px;display:grid;place-items:center;border-radius:10px;color:var(--muted);background:transparent;border:1px solid transparent;transition:all var(--t-fast) var(--ease)}.icon-btn:hover{color:var(--ink);border-color:var(--line-2);background:var(--surface-2)}.panel{background:linear-gradient(180deg,var(--fill-1),transparent),var(--surface);border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.panel.flat{box-shadow:var(--sh-hairline)}.panel.glow{box-shadow:var(--sh-brand),var(--sh-1);border-color:var(--brand-ring)}.panel-pad{padding:var(--s-6)}.panel-pad-lg{padding:var(--s-8)}.field{display:flex;flex-direction:column;gap:var(--s-2)}.field label{font-family:var(--font-display);font-weight:700;font-size:var(--text-sm);color:var(--ink-2)}.input{background:var(--fill-1);color:var(--ink);border:1px solid var(--line-2);border-radius:var(--r-md);padding:14px 16px;font:500 var(--text-md) / 1.4 var(--font-body);transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease),background var(--t-fast) var(--ease)}.input::placeholder{color:var(--mute-2);font-weight:400}.input:focus{outline:none;border-color:var(--brand-line-strong);background:var(--brand-ring-2);box-shadow:0 0 0 3px var(--brand-tint),0 0 24px -8px var(--brand-glow)}.input--error,.input--error:focus{border-color:var(--danger, #e5484d);box-shadow:0 0 0 3px #e5484d26}.input.big{padding:16px 18px;font-size:var(--text-lg);font-family:var(--font-mono);border-radius:var(--r-lg)}.input-with-action{position:relative;display:block}.input-with-action>.input{width:100%;padding-right:44px}.input-action{position:absolute;top:50%;right:8px;transform:translateY(-50%);display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;background:transparent;color:var(--mute-2);cursor:pointer;border-radius:var(--r-sm, 8px);transition:color var(--t-fast) var(--ease),background var(--t-fast) var(--ease)}.input-action:hover,.input-action:focus-visible{color:var(--ink);background:var(--fill-2);outline:none}.chip-row{display:flex;flex-wrap:wrap;gap:var(--s-3)}.tip-trigger{position:relative;display:inline-flex;outline:none}.tip-trigger:focus-visible>.chip,.tip-trigger.open>.chip{border-color:var(--line-strong)}.tip{position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%);z-index:30;width:max-content;max-width:260px;padding:var(--s-2) var(--s-3);border-radius:var(--r-md);background:var(--surface-2, rgba(20, 20, 28, .96));border:1px solid var(--line);box-shadow:var(--sh-2);color:var(--ink);font-family:var(--font-body);font-size:var(--text-sm);line-height:1.4;text-align:left;white-space:normal;text-transform:none;letter-spacing:0;opacity:0;visibility:hidden;transition:opacity 80ms ease-out,visibility 0s linear 80ms;pointer-events:none}.tip:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:6px solid transparent;border-top-color:var(--line)}.tip-trigger:hover .tip,.tip-trigger:focus-visible .tip,.tip-trigger.open .tip{opacity:1;visibility:visible;transition:opacity 80ms ease-out}.chip{display:inline-flex;align-items:center;gap:var(--s-2);height:42px;padding:0 var(--s-4) 0 var(--s-3);border-radius:var(--r-pill);background:var(--fill-1);border:1px solid var(--line);box-shadow:inset 0 1px 0 var(--fill-1);font-family:var(--font-body);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.chip.dim{opacity:.82}.chip .ic{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--fill-2);color:var(--ink-2);flex-shrink:0}.chip .stack{gap:3px;line-height:1}.chip .k{font-family:var(--font-mono);font-size:10px;line-height:1;text-transform:uppercase;letter-spacing:.16em;color:var(--ink-2)}.chip .v{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600;font-size:var(--text-md);line-height:1;color:var(--ink)}.chip.math .ic{background:var(--math-tint);color:var(--math-deep)}.chip.puzzle .ic{background:var(--puzzle-tint);color:var(--puzzle-deep)}.chip.training .ic{background:var(--training-tint);color:var(--training-deep)}.chip.final .ic{background:var(--brand-tint);color:var(--brand-deep)}.chip.points,.chip.thread{background:var(--brand-tint-2);border-color:var(--brand-ring);box-shadow:0 0 18px -8px var(--brand-glow)}.chip.points .ic,.chip.thread .ic{background:linear-gradient(180deg,var(--brand),var(--brand-deep));color:#1a1208;box-shadow:0 0 10px var(--brand-glow)}.chip.points .v,.chip.thread .v{color:var(--brand);font-size:var(--text-lg)}.chip.fragments{background:var(--puzzle-tint);border-color:var(--puzzle)}.chip.fragments .ic{background:var(--puzzle-tint);color:var(--puzzle-deep)}.chip.fragments .v{color:var(--puzzle-deep)}.chip.timer{background:var(--inset-strong);color:var(--ink);border-color:var(--line-2);padding-left:var(--s-4)}.chip.timer 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