:root{
  --bg:#F5F6F6; --surface:#FFFFFF; --ink:#121718; --muted:#5F6869; --line:rgba(18,23,24,.09);
  --teal:#17565C; --teal-2:#1F6A70; --pale:#E3EEEE; --on-teal:#FFFFFF; --sub-on-teal:#C9DEDF;
  --spade:#1A1A1A; --heart:#C8202F; --diamond:#C96A00; --club:#1F5FB8;
  --card:#FFFFFF; --card-line:rgba(18,23,24,.12);
  --sans:"PingFang SC","HarmonyOS Sans SC","MiSans","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --rank:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Songti SC",serif;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0C1A1F; --surface:#13252B; --ink:#E8EEEF; --muted:#8FA0A4; --line:rgba(255,255,255,.08);
    --teal:#17565C; --pale:#1A2E35;
    --spade:#E8EEEF; --heart:#FF7A80; --diamond:#F2A04A; --club:#7FB0FF;
    --card:#1A2E35; --card-line:rgba(255,255,255,.1);
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-variant-emoji:text;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.75}
img{max-width:100%;display:block}
a{color:inherit}
a:focus-visible,button:focus-visible{outline:3px solid var(--teal);outline-offset:3px;border-radius:6px}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}

/* header */
.top{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;font-size:20px;letter-spacing:.06em}
.brand img{width:34px;height:34px;border-radius:9px}
.nav{display:flex;gap:24px;font-size:15px}
.nav a{text-decoration:none;color:var(--muted);padding:8px 0}
.nav a:hover{color:var(--ink)}

/* hero */
.hero{padding:72px 0 88px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:56px;align-items:center}
.hero h1{margin:0 0 22px;font-size:clamp(38px,5.4vw,64px);line-height:1.18;font-weight:900;letter-spacing:-.01em}
.hero .lede{margin:0 0 32px;color:var(--muted);font-size:19px;max-width:30em}
.platforms{display:flex;flex-wrap:wrap;gap:10px}
.plat{display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:8px 18px 8px 14px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font:inherit;text-decoration:none}
.plat svg{width:24px;height:24px;flex:none}
.plat b{display:block;font-size:15px;line-height:1.2}
.plat small{display:block;font-size:12px;color:var(--muted);line-height:1.3}
.plat[aria-disabled="true"]{cursor:default}
.note{margin:16px 0 0;font-size:14px;color:var(--muted)}

/* deal diagram — the one bold thing */
.deal{display:grid;grid-template-columns:1fr auto 1fr;grid-template-rows:auto auto auto;gap:14px 18px;align-items:center;justify-items:center;padding:32px 24px;border-radius:28px;background:var(--surface);border:1px solid var(--line)}
.hand{font-family:var(--rank);font-size:clamp(17px,1.9vw,22px);line-height:1.5;white-space:nowrap}
.hand .who{display:block;font-family:var(--sans);font-size:13px;color:var(--muted);margin-bottom:2px;letter-spacing:.04em}
.hand .you{color:var(--teal);font-weight:700}
.h{color:var(--heart)} .d{color:var(--diamond)} .c{color:var(--club)} .s{color:var(--spade)}
.suit{display:inline-block;width:1.25em;font-family:var(--sans)}
.n{grid-column:2;grid-row:1}.w{grid-column:1;grid-row:2;justify-self:end}.e{grid-column:3;grid-row:2;justify-self:start}.so{grid-column:2;grid-row:3}
.table{grid-column:2;grid-row:2;width:clamp(120px,14vw,168px);aspect-ratio:1;border-radius:20px;background:var(--teal);color:var(--on-teal);display:grid;grid-template-columns:1fr 1fr 1fr;grid-template-rows:1fr 1fr 1fr;place-items:center;font-size:13px;position:relative}
.table .lbl{color:var(--sub-on-teal)}
.table .t-n{grid-area:1/2}.table .t-w{grid-area:2/1}.table .t-e{grid-area:2/3}.table .t-s{grid-area:3/2}
.table .contract{grid-area:2/2;font-family:var(--rank);font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1;text-align:center}
.table .contract span{display:block;white-space:nowrap;font-family:var(--sans);font-size:11px;font-weight:400;color:var(--sub-on-teal);margin-top:6px}

/* section heads */
.sec{padding:88px 0;border-top:1px solid var(--line)}
.sec h2{margin:0 0 14px;font-size:clamp(28px,3.6vw,40px);line-height:1.3;font-weight:800}
.sec .intro{margin:0 0 44px;color:var(--muted);max-width:36em}

/* tabs list: mirrors the app's bottom tabs */
.tabs{display:grid;gap:0;border-top:1px solid var(--line)}
.tabrow{display:grid;grid-template-columns:200px minmax(0,1fr);gap:32px;padding:36px 0;border-bottom:1px solid var(--line)}
.tabname{font-size:26px;font-weight:800;line-height:1.3}
.tabname small{display:block;font-size:14px;font-weight:400;color:var(--muted);margin-top:6px}
.items{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 40px}
.item h3{margin:0 0 4px;font-size:18px;font-weight:700}
.item p{margin:0;color:var(--muted);font-size:16px}

/* daily band */
.band{background:var(--teal);color:var(--on-teal);border-radius:28px;padding:44px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;margin-top:56px}
.band h3{margin:0 0 8px;font-size:clamp(24px,2.8vw,32px);font-weight:800;line-height:1.35}
.band p{margin:0;color:var(--sub-on-teal);max-width:30em}
.boards{display:grid;grid-template-columns:repeat(6,34px);gap:7px}
.boards span{height:34px;border-radius:8px;background:rgba(255,255,255,.14);display:grid;place-items:center;font-family:var(--rank);font-size:14px;color:var(--sub-on-teal)}
.boards span.done{background:#FFFFFF;color:var(--teal);font-weight:700}

/* readable */
.read{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:start}
.cards{display:flex;align-items:flex-end;gap:28px;flex-wrap:wrap;padding:28px;border-radius:24px;background:var(--pale)}
.size{display:flex;flex-direction:column;align-items:center;gap:10px;font-size:14px;color:var(--muted)}
.pc{background:var(--card);border:1px solid var(--card-line);border-radius:8px;font-family:var(--rank);font-weight:700;line-height:1.05;padding:5px 7px;box-shadow:0 2px 0 var(--card-line)}
.pc i{font-style:normal;display:block;font-family:var(--sans);font-weight:400}
.fan{display:flex}.pc{white-space:nowrap}
.themes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:22px}
.theme{border-radius:16px;padding:16px;border:1px solid var(--line);background:var(--surface)}
.theme .sw{display:flex;gap:6px;margin-bottom:10px}
.theme .sw i{width:26px;height:26px;border-radius:50%;display:block;border:1px solid var(--line)}
.theme b{display:block;font-size:16px}
.theme small{color:var(--muted);font-size:13px}
.checks{margin:0;padding:0;list-style:none;display:grid;gap:14px}
.checks li{padding-left:28px;position:relative}
.checks li::before{content:"";position:absolute;left:4px;top:.62em;width:10px;height:10px;border-radius:50%;background:var(--teal)}
.checks b{display:block}
.checks span{color:var(--muted);font-size:16px}

/* download */
.dl{text-align:center}
.dl .intro{margin-left:auto;margin-right:auto}
.dl .platforms{justify-content:center}
.dl img.icon{width:88px;height:88px;border-radius:20px;margin:0 auto 24px}

/* footer */
.foot{border-top:1px solid var(--line);padding:36px 0 44px;font-size:14px;color:var(--muted)}
.foot .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px 32px}
.foot nav{display:flex;flex-wrap:wrap;gap:8px 22px}
.foot a{text-decoration:none}
.foot a:hover{color:var(--ink);text-decoration:underline}

/* legal pages */
.doc{max-width:760px;margin:0 auto;padding:56px 24px 88px}
.doc h1{font-size:34px;margin:0 0 6px;font-weight:800}
.doc .date{color:var(--muted);margin:0 0 36px}
.doc h2{font-size:20px;margin:36px 0 8px}
.doc p,.doc li{color:var(--ink)}
.doc ol{padding-left:1.4em}
.doc li{margin-bottom:8px}

@media (max-width:900px){
  .hero{padding:44px 0 64px}
  .hero .wrap,.read{grid-template-columns:minmax(0,1fr)}
  .tabrow{grid-template-columns:minmax(0,1fr);gap:16px}
  .band{grid-template-columns:minmax(0,1fr);padding:32px}
}
@media (max-width:620px){
  body{font-size:16px}
  .nav{display:none}
  .items{grid-template-columns:minmax(0,1fr)}
  .deal{padding:22px 10px;gap:10px 8px}
  .hand{font-size:15px}
  .table{width:96px;border-radius:14px;font-size:11px}
  .table .contract{font-size:18px}
  .table .contract span{font-size:10px;margin-top:4px}
  .themes{grid-template-columns:minmax(0,1fr)}
  .boards{grid-template-columns:repeat(6,30px)}
  .boards span{height:30px}
  .sec{padding:64px 0}
}