/* natural8.cn — dark poker theme: Natural8 magenta/violet + Asian red/gold accents */
:root{
  --bg:#0b0b0f; --bg2:#111117; --card:#16161d; --card2:#1d1d26; --line:#2a2a35;
  --text:#ececf1; --muted:#a3a3b2; --dim:#74748a;
  --pink:#ff2d78; --violet:#7b2cff; --grad:linear-gradient(135deg,#ff2d78 0%,#c4249a 50%,#7b2cff 100%);
  --gold:#f5b84a; --gold2:#ffd98a; --red:#e3262f; --green:#2fbf71;
  --r:14px; --r-sm:10px; --wrap:1180px;
  --font:Inter,"Noto Sans SC","Noto Sans TC","PingFang SC","PingFang TC","Microsoft YaHei","Noto Sans Thai",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 var(--font);overflow-x:hidden}
.lang-zh body,.lang-zh-hant{letter-spacing:.01em}
a{color:#ff78a8;text-underline-offset:3px}
a:hover{color:#fff}
img{max-width:100%;height:auto}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;z-index:99;background:#fff;color:#000;padding:6px 10px}

/* topbar + header */
.topbar{background:#15060c;border-bottom:1px solid #3a0f20;color:#f3c3d3;font-size:12.5px;line-height:1.5;text-align:center;padding:6px 16px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(11,11,15,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:14px;min-height:62px}
.logo{display:flex;align-items:center;gap:9px;color:#fff;text-decoration:none;font-weight:800;font-size:17px;white-space:nowrap}
.logo-mark{width:34px;height:34px;flex:none}
.nav{flex:1;min-width:0}
.nav>ul{display:flex;gap:2px;list-style:none;margin:0;padding:0}
.nav-group{position:relative}
.nav-group>button{background:none;border:0;color:var(--muted);font:inherit;font-size:14.5px;font-weight:600;padding:8px 11px;border-radius:8px;cursor:pointer}
.nav-group>button::after{content:"";display:inline-block;margin-left:6px;border:4px solid transparent;border-top-color:currentColor;transform:translateY(2px)}
.nav-group:hover>button,.nav-group.is-active>button{color:#fff}
.nav-group.is-active>button{box-shadow:inset 0 -2px 0 var(--pink)}
.nav-group>ul{display:none;position:absolute;left:0;top:100%;min-width:230px;list-style:none;margin:0;padding:8px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);box-shadow:0 18px 40px rgba(0,0,0,.5)}
.nav-group:hover>ul,.nav-group:focus-within>ul,.nav-group.open>ul{display:block}
.nav-group li a{display:block;padding:7px 10px;border-radius:7px;color:var(--text);text-decoration:none;font-size:14.5px}
.nav-group li a:hover,.nav-group li a[aria-current]{background:var(--card2);color:#fff}
.hdr-act{display:flex;align-items:center;gap:8px;margin-left:auto}
.lang{position:relative}
.lang .lc{display:none}
.lang>button{white-space:nowrap;background:var(--card);border:1px solid var(--line);color:var(--text);font:inherit;font-size:13px;padding:6px 10px;border-radius:8px;cursor:pointer}
.lang>ul{display:none;position:absolute;right:0;top:calc(100% + 6px);list-style:none;margin:0;padding:6px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);min-width:150px;z-index:60}
.lang.open>ul{display:block}
.lang a{display:block;padding:6px 10px;color:var(--text);text-decoration:none;border-radius:6px;font-size:14px}
.lang a:hover,.lang a[aria-current]{background:var(--card2)}
.burger{display:none;background:none;border:0;width:40px;height:40px;padding:9px;cursor:pointer}
.burger span{display:block;height:2px;background:#fff;margin:5px 0;border-radius:2px}

/* buttons */
.btn{white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:700;text-decoration:none;padding:10px 20px;line-height:1.2;border:1px solid transparent;cursor:pointer;font-size:15px;transition:transform .12s,filter .12s}
.btn:hover{transform:translateY(-1px);filter:brightness(1.08);color:#fff}
.btn-cta{background:var(--grad);color:#fff;box-shadow:0 6px 22px rgba(255,45,120,.28)}
.btn-ghost{background:transparent;color:#fff;border-color:#4a4a5a}
.btn-ghost:hover{border-color:#fff}
.btn-lg{padding:14px 28px;font-size:16.5px}
.btn-sm{padding:7px 15px;font-size:14px}
.btn-block{display:flex;width:100%}
.cta-note{font-size:12px;color:var(--dim);margin:8px 0 0;line-height:1.5}

/* hero */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:radial-gradient(900px 420px at 12% -10%,rgba(227,38,47,.35),transparent 60%),radial-gradient(800px 500px at 100% 0,rgba(123,44,255,.35),transparent 60%),var(--bg2)}
.hero::before{content:"♠ ♥ ♣ ♦";position:absolute;right:-20px;bottom:-40px;font-size:180px;letter-spacing:-10px;color:rgba(255,255,255,.03);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:40px;align-items:center;padding-top:52px;padding-bottom:52px}
.kicker{display:inline-block;margin:0 0 14px;background:rgba(227,38,47,.16);border:1px solid rgba(227,38,47,.5);color:#ffb3b6;font-weight:700;font-size:13px;letter-spacing:.06em;padding:4px 12px;border-radius:999px}
.hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.15;margin:0 0 16px;font-weight:900}
.hero .lead{font-size:18px;color:#d5d5df;margin:0 0 24px;max-width:640px}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.hero-facts{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:22px 0 0}
.hero-facts li{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:5px 12px;font-size:13.5px;color:var(--muted)}

/* offer card */
.offer{background:linear-gradient(160deg,#241018 0%,#16161d 55%);border:1px solid #4d2233;border-radius:var(--r);padding:22px;position:relative;box-shadow:0 20px 50px rgba(0,0,0,.45)}
.offer::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(135deg,var(--gold),transparent 40%,var(--pink));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.offer-k{margin:0;color:var(--gold);font-weight:800;font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.offer-amt{margin:6px 0 2px;font-size:32px;font-weight:900;line-height:1.15;background:linear-gradient(90deg,var(--gold2),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.offer-sub{margin:0 0 12px;color:var(--muted);font-size:14px}
.offer ul{list-style:none;padding:0;margin:0 0 16px;font-size:14px}
.offer li{padding:5px 0 5px 24px;position:relative;border-top:1px dashed #2f2f3a}
.offer li::before{content:"✓";position:absolute;left:2px;color:var(--green);font-weight:900}
.offer-more{display:block;text-align:center;margin-top:10px;font-size:13.5px;color:var(--muted)}

/* layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;padding-top:28px;padding-bottom:40px}
.wrap:not(.layout)>.content{max-width:860px;margin:0 auto;padding:28px 0 40px}
.content{min-width:0}
.side .sticky{position:sticky;top:84px;display:grid;gap:18px}
.side-links{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.side-links p{margin:0 0 6px;font-weight:800;font-size:14px;color:var(--muted)}
.side-links ul{list-style:none;padding:0;margin:0}
.side-links a{display:block;padding:6px 0;color:var(--text);text-decoration:none;font-size:14.5px;border-top:1px solid #23232c}
.side-links li:first-child a{border-top:0}
.side-links a:hover{color:var(--pink)}

/* article */
.crumbs{font-size:13px;color:var(--dim);margin-bottom:12px}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs i{font-style:normal;margin:0 7px}
.content h1{font-size:clamp(27px,3.6vw,40px);line-height:1.2;margin:0 0 12px;font-weight:900}
.content .lead{font-size:17.5px;color:#d0d0da;margin:0 0 18px}
.action{display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px;padding:16px;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--pink);border-radius:var(--r-sm);margin:0 0 14px}
.action .cta-note{flex-basis:100%;margin:0}
.meta{font-size:13px;color:var(--dim);margin:0 0 22px}
.content h2{font-size:clamp(21px,2.5vw,27px);line-height:1.3;margin:38px 0 12px;font-weight:800;scroll-margin-top:80px}
.content h2::before{content:"";display:block;width:36px;height:3px;background:var(--grad);border-radius:3px;margin-bottom:12px}
.content h3{font-size:19px;margin:26px 0 8px}
.content p,.content li{color:#dcdce4}
.content ul,.content ol{padding-left:22px}
.content li{margin:4px 0}
.content strong{color:#fff}
.toc{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 18px;margin:0 0 10px}
.toc summary{cursor:pointer;font-weight:800;color:var(--muted);font-size:14px}
.toc ol{margin:8px 0 0;padding-left:20px;columns:2;column-gap:28px;font-size:14.5px}
.toc a{color:var(--text);text-decoration:none}.toc a:hover{color:var(--pink)}

/* blocks used in content */
.tbl{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:var(--r-sm)}
.tbl table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.tbl th,.tbl td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{background:var(--card2);color:#fff;font-weight:700;white-space:nowrap}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{font-weight:600;color:#fff}
.note,.warn,.tip{border-radius:var(--r-sm);padding:14px 16px;margin:18px 0;font-size:15px}
.note{background:#151a26;border:1px solid #27324a}
.tip{background:#10201a;border:1px solid #1f4a35}
.warn{background:#24130f;border:1px solid #5a2a1c}
.note>:first-child,.warn>:first-child,.tip>:first-child{margin-top:0}.note>:last-child,.warn>:last-child,.tip>:last-child{margin-bottom:0}
.steps{counter-reset:s;list-style:none;padding:0!important}
.steps>li{counter-increment:s;position:relative;padding:12px 14px 12px 56px;background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);margin:10px 0}
.steps>li::before{content:counter(s);position:absolute;left:14px;top:12px;width:28px;height:28px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;display:grid;place-items:center;font-size:14px}
.grid2,.grid3{display:grid;gap:14px;margin:18px 0}
.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}
.tile{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;text-decoration:none;color:var(--text);display:block}
a.tile:hover{border-color:var(--pink)}
.tile b{display:block;color:#fff;font-size:16.5px;margin-bottom:4px}
.tile span{display:block;font-size:14px;color:var(--muted);line-height:1.55}
.tile .big{font-size:24px;font-weight:900;color:var(--gold);margin:2px 0 4px}
.dl-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:18px 0}
.dl{display:flex;flex-direction:column;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px 10px;text-align:center;text-decoration:none;color:var(--text)}
.dl:hover{border-color:var(--pink);color:#fff}
.dl .ico{font-size:30px;line-height:1}
.dl b{font-size:15.5px}.dl span{font-size:12.5px;color:var(--muted)}
.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}
.pros-cons>div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 18px}
.pros-cons h3{margin:0 0 6px;font-size:16px}
.pros-cons .pros h3{color:var(--green)}.pros-cons .cons h3{color:#ff7a6b}
.pros-cons ul{margin:0;padding-left:18px;font-size:15px}
.band{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:30px 0;padding:22px 24px;border-radius:var(--r);
  background:radial-gradient(500px 200px at 0 0,rgba(227,38,47,.28),transparent 70%),linear-gradient(135deg,#21101a,#191426);border:1px solid #47213a}
.band-title{margin:0 0 4px;font-weight:900;font-size:20px;color:#fff}
.band-txt p:last-child{margin:0;color:var(--muted)}
.band-act{flex:none;text-align:center}
.card-row{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}
.pc{display:inline-flex;align-items:center;justify-content:center;width:34px;height:46px;border-radius:6px;background:#fff;color:#111;font-weight:800;font-size:16px;box-shadow:0 2px 6px rgba(0,0,0,.4)}
.pc.r{color:#d0121b}

/* faq, sources, related */
.faq .qa{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);margin:10px 0}
.qa summary{cursor:pointer;padding:13px 44px 13px 16px;font-weight:700;color:#fff;position:relative;list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:16px;top:9px;font-size:22px;color:var(--pink)}
.qa[open] summary::after{content:"–"}
.qa>div{padding:0 16px 14px;color:#d0d0da}
.qa>div p{margin:0 0 8px}
.sources{font-size:14px;color:var(--muted)}
.sources ul{padding-left:18px}.sources a{color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;text-decoration:none;color:var(--text)}
.card:hover{border-color:var(--pink)}
.card b{display:block;color:#fff;margin-bottom:4px}.card span{font-size:14px;color:var(--muted);line-height:1.5}
.disclaimer-inline{margin-top:34px;font-size:12.5px;color:var(--dim);border-top:1px solid var(--line);padding-top:14px}

/* starting hands table */
.sh-wrap{overflow-x:auto;margin:18px 0}
.sh-table{border-collapse:separate;border-spacing:2px;min-width:620px;width:100%}
.sh-table td{text-align:center;padding:5px 2px;border-radius:4px;font-size:11.5px;line-height:1.2;color:#fff}
.sh-table td b{display:block;font-size:12.5px}.sh-table td span{opacity:.8}
.sh-table .t1{background:#b3123f}.sh-table .t2{background:#8a2a8f}.sh-table .t3{background:#4b3a9e}.sh-table .t4{background:#2c3352}.sh-table .t5{background:#1c1e28;color:#9a9aae}
.legend{display:flex;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--muted)}
.legend i{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:5px;vertical-align:-1px}

/* calculators */
.calc{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin:20px 0}
.calc-row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;margin-bottom:12px}
.calc label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted);font-weight:600}
.calc input,.calc select{background:var(--bg);border:1px solid var(--line);color:#fff;border-radius:8px;padding:9px 10px;font:inherit;font-size:16px;min-width:120px}
.calc .out{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 16px;margin-top:10px}
.calc .out b{color:var(--gold);font-size:22px}
.seats{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px;margin-bottom:14px}
.seat{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-sm);padding:10px 12px}
.seat.win{border-color:var(--green);box-shadow:0 0 0 1px var(--green) inset}
.seat-h{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);font-weight:700}
.seat-h button{background:none;border:0;color:var(--dim);cursor:pointer;font-size:16px}
.slots{display:flex;gap:6px;margin:8px 0}
.slot{width:40px;height:54px;border-radius:7px;border:1.5px dashed #3c3c4a;background:transparent;color:var(--dim);font:inherit;font-weight:800;font-size:17px;cursor:pointer;display:grid;place-items:center;padding:0}
.slot.sel{border-color:var(--pink);border-style:solid;box-shadow:0 0 0 2px rgba(255,45,120,.35)}
.slot.has{background:#fff;color:#111;border:0}
.slot.has.r{color:#d0121b}
.eq{display:flex;gap:10px;font-size:13px;color:var(--muted)}
.eq b{color:#fff;font-size:18px}
.bar{height:6px;border-radius:4px;background:#26262f;overflow:hidden;margin-top:6px}
.bar i{display:block;height:100%;background:var(--grad);width:0;transition:width .3s}
.board{background:#0e3a29;background:radial-gradient(ellipse at center,#14583d,#0b2f21);border:1px solid #1f6b4a;border-radius:60px;padding:14px 22px;margin-bottom:12px;display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:center}
.board .slot{border-color:#5fa385;color:#9fd2bb}
.board-l{font-size:13px;color:#bfe6d4;font-weight:700}
.deck{display:grid;grid-template-columns:repeat(13,minmax(0,1fr));gap:3px;margin:10px 0}
.deck button{border:0;border-radius:5px;background:#f2f2f5;color:#111;font:inherit;font-weight:800;font-size:13px;padding:6px 0;cursor:pointer;line-height:1.1}
.deck button.r{color:#d0121b}
.deck button:disabled{opacity:.18;cursor:default}
.calc-act{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}
.calc small{color:var(--dim)}

/* footer + sticky */
.site-footer{background:#08080b;border-top:1px solid var(--line);margin-top:30px;padding:40px 0 90px;font-size:14px;color:var(--muted)}
.f-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}
.f-h{color:#fff;font-weight:800;margin:0 0 8px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li a{display:block;padding:3px 0;color:var(--muted);text-decoration:none}
.site-footer li a:hover{color:#fff}
.badges{display:flex;gap:6px;flex-wrap:wrap}
.badges span{border:1px solid var(--line);border-radius:6px;padding:2px 8px;font-size:12px;font-weight:700}
.f-legal{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;font-size:12.5px;color:var(--dim)}
.f-legal a{color:var(--muted)}
.sticky-cta{display:none}

@media (max-width:1100px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .side{display:none}
  .nav-group>button{padding:8px 8px;font-size:14px}
}
@media (max-width:960px){
  .burger{display:block}
  .nav{position:fixed;inset:62px 0 0 0;background:var(--bg);overflow-y:auto;display:none;padding:10px 16px 100px;border-top:1px solid var(--line)}
  body.nav-open .nav{display:block}
  body.nav-open{overflow:hidden}
  .nav>ul{flex-direction:column}
  .nav-group>button{width:100%;text-align:left;font-size:17px;padding:12px 4px;border-bottom:1px solid var(--line);border-radius:0;color:#fff}
  .nav-group>ul{position:static;display:none;box-shadow:none;border:0;background:none;padding:4px 0 8px 10px}
  .nav-group:hover>ul{display:none}
  .nav-group.open>ul{display:block}
  .hero-grid{grid-template-columns:1fr;padding-top:34px;padding-bottom:34px;gap:26px}
  .f-grid{grid-template-columns:1fr 1fr}
  .f-about{grid-column:1/-1}
  .hide-sm{display:none}
  .sticky-cta{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;align-items:center;justify-content:space-between;gap:10px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(17,17,23,.97);border-top:1px solid #47213a}
  .sticky-cta div{display:flex;flex-direction:column;line-height:1.3;font-size:12.5px;color:var(--muted)}
  .sticky-cta b{color:var(--gold);font-size:14.5px}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid3{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  body{font-size:15.5px}
  .lang .ln{display:none}.lang .lc{display:inline}
  .hdr{gap:8px}
  .logo span{font-size:15px}
  .hero .lead{font-size:16.5px}
  .btns .btn{flex:1 1 100%}
  .grid2,.grid3,.cards,.pros-cons{grid-template-columns:1fr}
  .band{flex-direction:column;align-items:stretch;text-align:left}
  .band-act .btn{width:100%}
  .toc ol{columns:1}
  .action .btn{flex:1 1 100%}
  .deck button{font-size:11.5px;padding:5px 0}
  .slot{width:36px;height:48px;font-size:15px}
}
.calc-modes{margin:0 0 14px}
.seat .slots{flex-wrap:wrap}