:root{color-scheme:dark;--tn-abyss: #0f0f17;--tn-bg-dark: #16161e;--tn-bg: #1a1b26;--tn-bg-highlight: #1f2335;--tn-surface: #252a41;--tn-fg-gutter: #3b4261;--tn-dark3: #545c7e;--tn-dark5: #737aa2;--tn-fg-dim: #9aa5ce;--tn-fg-dark: #a9b1d6;--tn-fg: #c0caf5;--tn-blue: #7aa2f7;--tn-cyan: #7dcfff;--tn-blue5: #89ddff;--tn-purple: #bb9af7;--tn-teal: #73daca;--tn-orange: #ff9e64;--bg: var(--tn-bg);--bg-alt: var(--tn-bg-dark);--bg-deep: var(--tn-abyss);--surface: var(--tn-bg-highlight);--surface-strong: var(--tn-surface);--text: var(--tn-fg);--muted: var(--tn-fg-dark);--dim: var(--tn-fg-dim);--line: rgba(122, 162, 247, .18);--line-strong: rgba(122, 162, 247, .62);--accent: var(--tn-blue);--accent-soft: var(--tn-purple);--accent-strong: var(--tn-cyan);--ink: #0d0f18;--container: 1120px;--gutter: max(1.25rem, calc((100vw - var(--container)) / 2));--radius-sm: 10px;--radius: 14px;--radius-lg: 20px;--shadow-card: 0 1px 2px rgba(5, 6, 12, .55);--shadow-lift: 0 18px 40px rgba(5, 6, 12, .7), 0 0 24px rgba(122, 162, 247, .1);--ease: cubic-bezier(.2, .7, .3, 1);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic,Meiryo,sans-serif;font-feature-settings:"palt" 1}*{box-sizing:border-box}html{background:var(--bg);scroll-behavior:smooth}body{margin:0;color:var(--text);background:var(--bg);line-height:1.8;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}:where(a,button):focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}img{max-width:100%}.site-header{position:fixed;z-index:10;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem var(--gutter);background:#0f0f17d1;border-bottom:1px solid var(--line);backdrop-filter:blur(16px) saturate(1.2)}.brand{display:inline-flex;align-items:center;gap:.7rem;min-width:0;font-weight:700;letter-spacing:.01em;transition:color .18s var(--ease)}.brand:hover{color:var(--accent-soft)}.brand-mark{width:2.1rem;height:2.1rem;border-radius:var(--radius-sm);object-fit:cover;background:var(--tn-surface);transition:transform .18s var(--ease)}.brand:hover .brand-mark{transform:scale(1.06) rotate(-2deg)}.nav-toggle{display:none;flex:none;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;padding:0;color:var(--text);background:#252a418c;border:1px solid var(--line);border-radius:var(--radius-sm);cursor:pointer;transition:background .18s var(--ease),border-color .18s var(--ease)}.nav-toggle:hover{background:var(--surface-strong);border-color:var(--line-strong)}.nav-toggle-bars{position:relative;display:block;width:1.15rem;height:2px;border-radius:2px;background:currentColor}.nav-toggle-bars:before,.nav-toggle-bars:after{content:"";position:absolute;left:0;width:100%;height:100%;border-radius:inherit;background:currentColor;transition:transform .2s var(--ease)}.nav-toggle-bars:before{top:-6px}.nav-toggle-bars:after{top:6px}.site-header[data-open=true] .nav-toggle-bars{background:transparent}.site-header[data-open=true] .nav-toggle-bars:before{transform:translateY(6px) rotate(45deg)}.site-header[data-open=true] .nav-toggle-bars:after{transform:translateY(-6px) rotate(-45deg)}.header-nav{display:flex;align-items:center;gap:1.35rem;color:var(--muted);font-size:.92rem}.header-nav a:not(.header-cta){position:relative;padding:.3rem 0;transition:color .18s var(--ease)}.header-nav a:not(.header-cta):after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease)}.header-nav a:hover{color:var(--text)}.header-nav a:hover:after,.header-nav a[aria-current=page]:after{transform:scaleX(1)}.header-nav a[aria-current=page]{color:var(--text)}.header-nav .header-cta{display:inline-flex;align-items:center;gap:.4rem;margin-left:.25rem;padding:.5rem 1.05rem;border-radius:999px;color:var(--ink);background:var(--accent);font-weight:700;font-size:.9rem;transition:background .18s var(--ease),transform .18s var(--ease)}.header-nav .header-cta:hover{color:var(--ink);background:var(--tn-cyan);transform:translateY(-1px);box-shadow:0 8px 22px #7dcfff47}.eyebrow{margin:0 0 .7rem;color:var(--accent-soft);font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em}h1,h2,h3,p{overflow-wrap:anywhere}h1{margin:0;font-size:clamp(2.6rem,6.4vw,4.2rem);line-height:1.1;letter-spacing:-.02em;font-weight:800}h2{margin:0;font-size:clamp(1.6rem,3.2vw,2.1rem);line-height:1.3;letter-spacing:-.01em;font-weight:700}h3{margin:0;font-size:1.1rem;line-height:1.5;font-weight:700}p{margin:0}.hero{position:relative;min-height:clamp(34rem,82vh,46rem);display:grid;align-items:center;overflow:hidden;padding:7rem var(--gutter) 4rem;border-bottom:1px solid var(--line)}.hero-media,.hero-overlay{position:absolute;inset:0}.hero-media{background-image:url(/images/hero-gaming-room.png);background-size:cover;background-position:center;filter:saturate(1.18) contrast(1.08) brightness(1.18)}.hero-overlay{background:linear-gradient(90deg,#0d0e16d1,#0d0e166b 38%,#0d0e1600 68%),linear-gradient(0deg,#0d0e16c7,#0d0e1600 46%)}.hero-content{position:relative;z-index:1;width:min(640px,100%);text-shadow:0 2px 18px rgba(10,11,18,.75)}.hero-copy{width:min(540px,100%);margin-top:1.3rem;color:var(--text);font-size:1.05rem}.hero-conditions{margin-top:1.5rem;padding:1rem 1.2rem;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:var(--radius-sm);background:#0f0f17b8;backdrop-filter:blur(6px)}.hero-conditions-title{margin:0 0 .35rem;color:var(--accent-soft);font-size:.76rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em}.hero-conditions-list{margin:0;padding-left:1.1rem;color:var(--text);font-size:.95rem;line-height:1.7}.hero-conditions-list li::marker{color:var(--accent)}.hero-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.7rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:2.9rem;padding:.75rem 1.35rem;border:1px solid transparent;border-radius:999px;font-weight:700;line-height:1.2;transition:background .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease)}.button-primary{color:var(--ink);background:var(--accent)}.button-primary:hover{background:var(--tn-cyan);transform:translateY(-1px);box-shadow:0 12px 28px #7dcfff4d}.button-secondary{color:var(--text);background:#7aa2f71a;border-color:var(--line)}.button-secondary:hover{background:#7aa2f733;border-color:var(--line-strong);transform:translateY(-1px)}.button:active,.header-nav .header-cta:active{transform:translateY(0);box-shadow:none}.section{padding:clamp(3.5rem,7vw,5.5rem) var(--gutter)}.section-inner{width:100%}.intro{background:var(--bg-alt)}.section-heading{display:grid;gap:.15rem;margin-bottom:2rem}.vibe-extra{display:grid;gap:1.25rem}.card,.vibe-feature,.vibe-join,.activity-card,.game-card,.rule-item>article{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-card);transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}.vibe-feature{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(1.25rem,3vw,2.25rem);align-items:center;padding:clamp(1.4rem,3vw,2rem)}.vibe-feature-body h3{margin-top:.3rem;color:var(--accent-strong);font-size:1.2rem}.vibe-feature-body p:last-child{margin-top:.85rem;color:var(--muted)}.vibe-feature-figure{margin:0;display:grid;gap:.6rem}.vibe-feature-figure img{width:100%;height:auto;max-height:20rem;object-fit:contain;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--tn-abyss);transition:border-color .2s var(--ease)}.vibe-feature:hover .vibe-feature-figure img{border-color:var(--line-strong)}.vibe-feature-figure figcaption{color:var(--muted);font-size:.86rem;line-height:1.6}.vibe-join{padding:clamp(1.4rem,3vw,2rem)}.vibe-join h3{margin-top:.3rem;color:var(--accent-strong);font-size:1.2rem;line-height:1.5}.vibe-join-lead{margin-top:.9rem;color:var(--muted);font-size:1rem}.vibe-join-note{margin-top:1.1rem;padding-top:1rem;border-top:1px solid var(--line);color:var(--dim);font-size:.93rem}.activity-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:1rem}.activity-card{padding:1.5rem}@media(hover:hover){.vibe-feature:hover,.vibe-join:hover,.activity-card:hover,.game-card:hover,.rule-item>article:hover{border-color:var(--line-strong);transform:translateY(-2px);box-shadow:var(--shadow-lift)}}.activity-card h3,.game-card h3{color:var(--accent-strong)}.activity-card p,.game-card p{margin-top:.7rem;color:var(--muted);font-size:.97rem}.activity-more{margin-top:1.5rem}.activity-more a,.rules-join-note a,.join-rules-note a{color:var(--accent-soft);text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:.28em;transition:color .18s var(--ease)}.activity-more a:hover,.rules-join-note a:hover,.join-rules-note a:hover{color:var(--accent-strong);text-decoration-color:currentColor}.activity-more a{display:inline-flex;align-items:center;gap:.35rem}.activity-more a:after{content:"→";transition:transform .18s var(--ease)}.activity-more a:hover:after{transform:translate(3px)}.games{background:var(--bg-deep)}.game-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem}.game-card{padding:1.5rem;background:var(--surface-strong)}.join{background:var(--bg-alt);border-top:1px solid var(--line)}.join-inner{display:grid;gap:1.5rem;align-items:start}.join-intro{display:grid;gap:.5rem}.join-intro h2{font-size:clamp(1.9rem,4.2vw,2.5rem)}.join-lead{margin-top:.4rem;color:var(--muted);font-size:1.02rem;max-width:44rem}.join-steps{display:grid;gap:.6rem;margin:0;padding-left:1.4rem;color:var(--muted)}.join-steps li::marker{color:var(--accent);font-weight:700}.join-actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:.4rem;align-items:center}.button-cta{min-height:3.4rem;padding:1rem 1.9rem;font-size:1.02rem}.button-primary.button-cta:hover{box-shadow:0 18px 40px #7dcfff52}.button-secondary.button-cta{border-color:var(--line-strong);background:#7aa2f71f}.button-secondary.button-cta:hover{background:#7aa2f738}.join-rules-note{margin-top:.2rem;color:var(--muted);font-size:.93rem}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.rules-page{padding-top:4rem}.rules-hero{position:relative;padding-top:clamp(3rem,7vw,4.5rem);padding-bottom:2rem;background:radial-gradient(110% 80% at 12% 0%,#7aa2f738,#1a1b2600 62%),var(--bg)}.rules-hero h1{font-size:clamp(2.1rem,5vw,3rem)}.rules-lead{width:min(720px,100%);margin-top:1.3rem;color:var(--muted);font-size:1.02rem}.rules-list{padding-top:1rem}.rule-items{display:grid;gap:1rem;margin:0;padding:0;list-style:none}.rule-item>article{position:relative;padding:clamp(1.3rem,3vw,1.8rem)}.rule-index{margin:0 0 .35rem;color:var(--accent-soft);font-size:.78rem;font-weight:700;letter-spacing:.14em;font-variant-numeric:tabular-nums}.rule-title{color:var(--accent-strong);font-size:1.14rem;line-height:1.55}.rule-paragraph{margin-top:.85rem;color:var(--muted);font-size:.99rem}.step-points{margin:.8rem 0 0;padding-left:1.2rem;display:grid;gap:.4rem;color:var(--muted);font-size:.99rem}.guide-section+.guide-section{border-top:1px solid var(--line)}.guide-section-alt{background:var(--bg-alt)}.guide-section .rules-lead{margin-top:-.6rem;margin-bottom:1.6rem}.guide-section-alt .rule-item>article{background:var(--bg-deep)}.step-figure{margin:1.1rem 0 0;display:grid;gap:.5rem}.step-figure img{max-width:100%;height:auto;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--tn-abyss)}.step-figure figcaption{color:var(--dim);font-size:.86rem}.console-note{margin-top:1.5rem;padding:clamp(1.3rem,3vw,1.8rem);border:1px dashed var(--line);border-radius:var(--radius);background:var(--bg)}.console-note h3{color:var(--accent-soft);font-size:1.05rem}.console-note .rule-paragraph{margin-top:.7rem}code{padding:.12em .45em;border:1px solid var(--line);border-radius:6px;background:var(--tn-abyss);color:var(--accent-strong);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;white-space:nowrap}.step-points li::marker{color:var(--accent)}.rule-paragraph+.rule-paragraph{margin-top:.7rem}.rules-join-note{color:var(--muted);font-size:.95rem}@media(max-width:820px){.site-header{align-items:center}.nav-toggle{display:inline-flex}.header-nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:.2rem;padding:.6rem var(--gutter) 1rem;font-size:1rem;background:var(--bg-deep);border-bottom:1px solid var(--line);box-shadow:var(--shadow-card);max-height:calc(100dvh - 100%);overflow-y:auto}.site-header[data-open=true] .header-nav{display:flex}.header-nav a:not(.header-cta){padding:.7rem 0}.header-nav a:not(.header-cta):after{right:auto;width:1.5rem}.header-nav .header-cta{justify-content:center;margin-top:.7rem;margin-left:0;padding:.7rem 1.05rem}.rules-page{padding-top:5rem}.hero{min-height:clamp(30rem,74vh,38rem);padding-top:6.5rem}.hero-overlay{background:linear-gradient(90deg,#0d0e16db,#0d0e1694),linear-gradient(0deg,#0d0e16db,#0d0e1600 54%)}.activity-grid,.join-inner,.vibe-feature{grid-template-columns:1fr}.game-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.vibe-feature-figure img{max-height:16rem}.join-inner{align-items:start}.button-cta{width:100%}}@media(max-width:460px){.brand{font-size:.95rem}.button{width:100%}.game-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition-duration:.01ms!important;animation-duration:.01ms!important}}