/* ===== base: shared structure; every visual decision comes from the theme tokens ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;overflow-x:clip}
body{margin:0;background:var(--bg);color:var(--text);font:400 var(--fs-body,17px)/1.7 var(--font-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip}
img,svg,canvas{max-width:100%;display:block}
a{color:var(--link);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--link-hover,var(--primary))}
:focus-visible{outline:3px solid var(--focus,var(--primary));outline-offset:3px;border-radius:6px}
h1,h2,h3{font-family:var(--font-head);color:var(--heading,var(--text));line-height:1.12;letter-spacing:var(--head-track,-.02em);font-weight:var(--head-weight,700);text-wrap:balance;overflow-wrap:anywhere;margin:0}
p{margin:0 0 1em}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container{padding:0 32px}}
.skip{position:absolute;left:-9999px;top:8px;z-index:100;background:var(--primary);color:var(--primary-contrast);padding:10px 16px;border-radius:10px}
.skip:focus{left:12px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:var(--header-bg);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--header-border,var(--border))}
.site-header .container{display:flex;align-items:center;gap:14px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;min-width:0;flex:0 1 auto;text-decoration:none;color:var(--heading,var(--text));font:var(--brand-weight,800) 19px/1 var(--font-head);letter-spacing:var(--brand-track,-.01em);min-height:44px}
.brand .mark{flex:0 0 34px;width:34px;height:34px;border-radius:var(--mark-radius,10px);display:grid;place-items:center;background:var(--mark-bg,var(--primary));color:var(--primary-contrast);font:800 16px/1 var(--font-head);box-shadow:var(--mark-shadow,none)}
.brand .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.brand small{font:600 11px/1 var(--font-body);color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin-left:2px}
.site-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.site-nav a{position:relative;padding:10px 12px;border-radius:var(--nav-radius,10px);color:var(--nav-link,var(--muted));text-decoration:none;font:600 14.5px/1.2 var(--font-body);white-space:nowrap;transition:color .15s,background .15s}
.site-nav a:hover{color:var(--heading,var(--text));background:var(--nav-hover,var(--surface-2))}
.site-nav a[aria-current=page]{color:var(--heading,var(--text));background:var(--nav-active-bg,var(--surface-2))}
.nav-underline .site-nav a[aria-current=page]{background:none}
.nav-underline .site-nav a[aria-current=page]::after{content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;background:var(--primary)}
.header-tools{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.lang-switch{display:flex;gap:2px;padding:3px;border-radius:999px;background:var(--surface-2);border:1px solid var(--border)}
.lang-switch a{padding:6px 10px;border-radius:999px;font:700 12px/1.2 var(--font-body);color:var(--muted);text-decoration:none;min-height:32px;display:inline-flex;align-items:center}
.lang-switch a[aria-current=true]{background:var(--surface);color:var(--heading,var(--text));box-shadow:0 1px 3px rgba(0,0,0,.12)}
.header-cta{display:none}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;place-items:center;flex:0 0 auto}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;margin:3px auto;transition:transform .2s,opacity .2s}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-open .nav-toggle span:nth-child(2){opacity:0}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
@media (min-width:1080px){.header-cta{display:inline-flex}}
@media (max-width:980px){
  .nav-toggle{display:grid}
  .site-header .container{gap:10px}
  .header-tools{margin-left:auto}
  .site-nav{position:fixed;left:0;right:0;top:68px;margin:0;flex-direction:column;align-items:stretch;gap:4px;padding:12px 20px 20px;background:var(--menu-bg,var(--bg));border-bottom:1px solid var(--border);box-shadow:0 24px 40px rgba(0,0,0,.18);max-height:calc(100dvh - 68px);overflow-y:auto;display:none}
  .nav-open .site-nav{display:flex}
  .site-nav a{padding:14px 14px;font-size:16px;border-radius:12px}
}
@media (max-width:420px){.brand small{display:none}.brand{font-size:17px}.lang-switch a{padding:6px 8px}}

/* ---------- buttons, badges ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 22px;border-radius:var(--btn-radius,12px);border:0;background:var(--btn-bg,var(--primary));color:var(--primary-contrast);font:700 15.5px/1.1 var(--font-body);text-decoration:none;cursor:pointer;box-shadow:var(--btn-shadow,none);transition:transform .15s,box-shadow .15s,filter .15s}
.btn:hover{color:var(--primary-contrast);transform:translateY(-1px);filter:brightness(1.05)}
.btn-ghost{background:transparent;color:var(--heading,var(--text));border:1px solid var(--border-strong,var(--border));box-shadow:none}
.btn-ghost:hover{color:var(--heading,var(--text));background:var(--surface-2)}
.btn-sm{min-height:40px;padding:9px 16px;font-size:14px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:var(--badge-bg,var(--surface-2));color:var(--badge-text,var(--muted));border:1px solid var(--badge-border,var(--border));font:700 12.5px/1.2 var(--font-body);letter-spacing:.02em}
.badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 22%,transparent)}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--hero-bg,transparent);color:var(--hero-text,var(--text));border-bottom:1px solid var(--hero-border,transparent);overflow:hidden;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:var(--hero-deco,none);pointer-events:none}
.hero h1{color:var(--hero-heading,var(--heading,var(--text)))}
.hero .lead{color:var(--hero-muted,var(--muted));font-size:clamp(16.5px,1.6vw,19px);line-height:1.65;max-width:62ch}
.hero .lead p:last-child{margin-bottom:0}
.hero-home{padding:clamp(32px,6vw,72px) 0 clamp(36px,6vw,80px)}
.hero-home .container{display:grid;gap:clamp(28px,4vw,56px);align-items:center}
.hero-home h1{font-size:clamp(34px,5.2vw,62px);margin:18px 0 18px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;padding:0;list-style:none}
.hero-stats li{padding:8px 12px;border-radius:10px;background:var(--chip-bg,var(--surface-2));border:1px solid var(--border);font:600 13px/1.3 var(--font-body);color:var(--muted)}
.game-card{position:relative;border-radius:var(--radius-lg,24px);padding:14px;background:var(--game-frame,var(--surface));border:1px solid var(--border);box-shadow:var(--shadow-lg,0 30px 60px rgba(0,0,0,.25))}
.game-card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:4px 6px 12px;font:700 13px/1.2 var(--font-body);color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.game-card-head .live{display:inline-flex;align-items:center;gap:6px;color:var(--accent)}
.game-card-head .live::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor;animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
#game-root{position:relative;width:100%;max-width:100%;min-height:360px;border-radius:calc(var(--radius-lg,24px) - 8px);overflow:hidden}
@media (min-width:1024px){.hero-home .container{grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr)}}
.hero-page{padding:clamp(26px,4.5vw,56px) 0 clamp(26px,4vw,48px)}
.hero-page h1{font-size:clamp(30px,4.2vw,48px);margin:14px 0 14px;max-width:24ch}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font:600 13.5px/1.4 var(--font-body);color:var(--muted)}
.breadcrumbs a{color:var(--muted);text-decoration:none;min-height:32px;display:inline-flex;align-items:center}
.breadcrumbs a:hover{color:var(--primary)}
.breadcrumbs .sep{opacity:.5}

/* ---------- page body ---------- */
.page{padding:clamp(28px,5vw,64px) 0 clamp(40px,6vw,80px)}
.page-grid{display:grid;gap:40px}
@media (min-width:1024px){.page-grid{grid-template-columns:minmax(0,1fr) 300px;gap:56px}.aside-sticky{position:sticky;top:92px}}
.content{max-width:72ch;font-size:var(--fs-content,17.5px)}
.content>*:first-child{margin-top:0}
.content h2{font-size:clamp(24px,2.6vw,32px);margin:1.9em 0 .6em;scroll-margin-top:90px}
.content h3{font-size:20px;margin:1.5em 0 .5em}
.content ul,.content ol{padding-left:1.3em;margin:0 0 1.2em}
.content li{margin:.35em 0;padding-left:.2em}
.content ul li::marker{color:var(--primary)}
.content ol li::marker{color:var(--primary);font-weight:700}
.content strong{color:var(--heading,var(--text));font-weight:700}
.table-wrap{overflow-x:auto;margin:1.2em 0 1.6em;border:1px solid var(--border);border-radius:var(--radius,16px);background:var(--surface)}
.content table{border-collapse:collapse;width:100%;min-width:480px;font-size:15.5px}
.content th{text-align:left;background:var(--surface-2);color:var(--heading,var(--text));font-weight:700}
.content th,.content td{padding:12px 14px;border-bottom:1px solid var(--border);vertical-align:top}
.content tr:last-child td{border-bottom:0}
.intro-extra{font-size:18px;color:var(--text)}
.toc{border:1px solid var(--border);border-radius:var(--radius,16px);background:var(--surface);padding:18px 18px 12px}
.toc h2{font:800 12px/1.2 var(--font-body);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 10px}
.toc ol{list-style:none;margin:0;padding:0;counter-reset:t}
.toc li{counter-increment:t}
.toc a{display:flex;gap:10px;padding:8px 6px;border-radius:10px;color:var(--text);text-decoration:none;font-size:14.5px;line-height:1.35}
.toc a::before{content:counter(t,decimal-leading-zero);color:var(--primary);font:700 12px/1.6 var(--font-body)}
.toc a:hover{background:var(--surface-2)}
.demo-card{margin-top:18px;border-radius:var(--radius,16px);padding:20px;background:var(--demo-bg,var(--primary));color:var(--primary-contrast)}
.demo-card strong{display:block;font:800 18px/1.25 var(--font-head);margin-bottom:6px}
.demo-card p{font-size:14.5px;opacity:.9;margin:0 0 14px}
.demo-card .btn{background:var(--primary-contrast);color:var(--primary);box-shadow:none}
@media (max-width:1023px){.aside{order:-1}.toc{display:none}.demo-card{display:none}}

/* ---------- faq, cta, cards, notice ---------- */
.section-title{font-size:clamp(24px,2.8vw,34px);margin:0 0 20px}
.faq{margin-top:48px}
.faq details{border:1px solid var(--border);border-radius:var(--radius,16px);background:var(--surface);margin:0 0 10px;overflow:hidden}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;font:700 16.5px/1.4 var(--font-body);color:var(--heading,var(--text));min-height:56px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:0 0 22px;height:22px;border-radius:50%;background:var(--surface-2) center/12px no-repeat;background-image:linear-gradient(var(--primary),var(--primary)),linear-gradient(var(--primary),var(--primary));background-size:10px 2px,2px 10px;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details>div{padding:0 20px 16px;color:var(--text)}
.cta{margin:48px 0 0;border-radius:var(--radius-lg,24px);padding:clamp(22px,4vw,36px);background:var(--cta-bg,var(--surface-2));border:1px solid var(--border);display:grid;gap:16px;align-items:center}
.cta p{margin:0;font:700 clamp(18px,2vw,22px)/1.35 var(--font-head);color:var(--heading,var(--text))}
@media (min-width:720px){.cta{grid-template-columns:1fr auto}}
.related{padding:clamp(36px,5vw,64px) 0;background:var(--bg-2,var(--surface-2));border-top:1px solid var(--border)}
.card-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(min(260px,100%),1fr))}
.card{position:relative;display:flex;flex-direction:column;gap:8px;padding:20px 20px 18px;border-radius:var(--radius,16px);background:var(--card-bg,var(--surface));border:1px solid var(--card-border,var(--border));color:var(--text);text-decoration:none;box-shadow:var(--card-shadow,none);transition:transform .18s,border-color .18s,box-shadow .18s;min-height:120px}
.card strong{font:700 17px/1.3 var(--font-head);color:var(--heading,var(--text));padding-right:28px}
.card span{font-size:14.5px;line-height:1.55;color:var(--muted)}
.card::after{content:"→";position:absolute;top:18px;right:18px;font:700 18px/1 var(--font-body);color:var(--primary);transition:transform .18s}
.card:hover{transform:translateY(-3px);border-color:var(--primary);color:var(--text)}
.card:hover::after{transform:translateX(3px)}
.notice{margin:36px 0 0;padding:16px 18px;border-radius:var(--radius,16px);border:1px dashed var(--border-strong,var(--border));color:var(--muted);font-size:14px;line-height:1.6}

/* ---------- footer ---------- */
.site-footer{background:var(--footer-bg,var(--bg-2));color:var(--footer-text,var(--muted));border-top:1px solid var(--border);padding:48px 0 28px;font-size:14.5px}
.footer-grid{display:grid;gap:32px}
@media (min-width:860px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
.site-footer .brand{margin-bottom:12px}
.site-footer p{max-width:46ch;margin:0}
.site-footer h2{font:800 12px/1.2 var(--font-body);letter-spacing:.12em;text-transform:uppercase;color:var(--footer-heading,var(--heading,var(--text)));margin:6px 0 12px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links a{display:inline-flex;align-items:center;min-height:40px;color:var(--footer-text,var(--muted));text-decoration:none}
.footer-links a:hover{color:var(--primary)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:36px;padding-top:20px;border-top:1px solid var(--border);font-size:13px}
.age-badge{display:inline-grid;place-items:center;min-width:38px;height:26px;padding:0 8px;border-radius:8px;border:1.5px solid currentColor;font:800 12px/1 var(--font-body)}

/* ---------- 404 ---------- */
.nf{padding:clamp(60px,10vw,120px) 0;text-align:center}
.nf h1{font-size:clamp(34px,5vw,56px);margin:0 0 14px}
.nf p{color:var(--muted);margin:0 auto 26px;max-width:46ch}

/* ---------- motion ---------- */
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* theme */
:root{color-scheme:light;--font-head:"Plus Jakarta Sans","Noto Sans Myanmar",sans-serif;--font-body:"Plus Jakarta Sans","Noto Sans Myanmar",system-ui,sans-serif;
--bg:#fffaf0;--bg-2:#fff3dc;--surface:#fff;--surface-2:#fdf1d8;--border:#f0e1bf;--border-strong:#e2c88e;
--text:#2b2a24;--muted:#6f6857;--heading:#13251c;--primary:#0e9f6e;--primary-contrast:#fff;--accent:#f59e0b;--link:#0b7f58;
--header-bg:rgba(255,250,240,.85);--radius:20px;--radius-lg:28px;--btn-radius:14px;--btn-shadow:0 8px 20px rgba(14,159,110,.25);
--mark-bg:conic-gradient(from 200deg,#0e9f6e,#f59e0b,#0e9f6e);--mark-radius:12px;
--hero-deco:radial-gradient(40% 60% at 90% 20%,rgba(245,158,11,.22),transparent 70%),radial-gradient(40% 50% at 10% 90%,rgba(14,159,110,.16),transparent 70%),radial-gradient(#e9d6a8 1.2px,transparent 1.3px) 0 0/22px 22px;
--game-frame:#fff;--shadow-lg:0 30px 60px rgba(120,90,30,.18);--card-shadow:0 1px 0 rgba(0,0,0,.02),0 8px 24px rgba(120,90,30,.06);
--demo-bg:linear-gradient(135deg,#0e9f6e,#0b7f58);--cta-bg:repeating-linear-gradient(90deg,#fff 0 12px,#fff8e8 12px 24px)}
.card{border-style:dashed;border-width:1.5px}
#game-root button{min-height:44px;min-width:44px;touch-action:manipulation}