:root{
  --bg:#f4f1ea; --ink:#1d2b3a; --muted:#68727d; --card:#fff; --line:#d9d3c6; --navy:#1f3a52; --gold:#d9962b;
  --duc:#c0594a; --sac:#d9962b; --vo:#5b6fb8; --ok:#1d7a43; --bad:#b33a2e;
}
:root[data-theme="dark"]{--bg:#161b21;--ink:#e8edf2;--muted:#9aa6b2;--card:#202831;--line:#37424e;--navy:#8fb4d6;--gold:#f0b84a;--duc:#e0796a;--sac:#f0b84a;--vo:#8da0ee;--ok:#5fcb8a;--bad:#ee7a6c}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--bg:#161b21;--ink:#e8edf2;--muted:#9aa6b2;--card:#202831;--line:#37424e;--navy:#8fb4d6;--gold:#f0b84a;--duc:#e0796a;--sac:#f0b84a;--vo:#8da0ee;--ok:#5fcb8a;--bad:#ee7a6c}}
*{box-sizing:border-box}
html{font-size:106%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Segoe UI",system-ui,sans-serif;line-height:1.45}
a{color:var(--navy)}
.demoBar{background:var(--navy);color:var(--bg);text-align:center;font-size:.82rem;padding:5px 10px}
.demoBar a{color:inherit}
.top{display:flex;justify-content:center;align-items:center;padding:10px 14px 4px;position:relative}
.brand{display:flex;gap:12px;align-items:center}
.brand img{height:50px;width:auto;border-radius:6px}
h1{margin:0;font-size:1.55rem;color:var(--navy);letter-spacing:.02em}
.brand p{margin:2px 0 0;color:var(--muted);font-size:.85rem}
#themeBtn{position:absolute;right:14px;top:10px;width:38px;height:38px;border-radius:50%;border:1.5px solid var(--navy);background:var(--card);color:var(--navy);font-size:1.1rem;cursor:pointer}
@media (max-width:600px){.top{flex-wrap:wrap;gap:8px;padding-right:14px}#themeBtn{position:static;width:34px;height:34px}.brand img{height:40px}h1{font-size:1.2rem}.brand p{font-size:.78rem}.hero .cap h2{font-size:1.15rem}.hero .cap p{font-size:.8rem}.hero{aspect-ratio:16/10}}
.tabs{display:flex;justify-content:center;gap:6px;flex-wrap:wrap;padding:10px 12px;position:sticky;top:0;background:var(--bg);z-index:20;border-bottom:1px solid var(--line)}
.tabs button{font:inherit;padding:8px 18px;border-radius:999px;border:1.5px solid var(--navy);background:transparent;color:var(--navy);cursor:pointer;font-weight:700}
.tabs button.on{background:var(--navy);color:var(--bg)}
#app{max-width:1280px;margin:0 auto;padding:14px 14px 30px}
.lead{max-width:none;margin:2px 0 14px;text-align:left;color:var(--muted);font-size:.98rem}
.foot{max-width:980px;margin:0 auto;padding:6px 16px 36px;font-size:.78rem;color:var(--muted)}
.foot .warn{color:#b36b00}
button{font:inherit}

/* ---- bố cục hai cột ---- */
.two{display:grid;grid-template-columns:262px minmax(0,1fr);gap:16px;align-items:start}
@media (max-width:900px){.two{grid-template-columns:1fr}}

/* ---- tháp 31 cõi ---- */
.tower{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:8px;position:sticky;top:64px;max-height:calc(100vh - 80px);overflow:auto}
.tw-g{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:#fff;border-radius:8px;padding:3px 10px;margin:8px 0 4px}
.tw-g:first-child{margin-top:2px}
.tw-g.duc{background:var(--duc)}.tw-g.sac{background:#b9791a}.tw-g.vo{background:var(--vo)}
.tw-s{font-size:.68rem;color:var(--muted);padding:2px 6px 0;font-weight:700}
.tw-i{display:flex;align-items:center;gap:8px;width:100%;text-align:left;border:1.5px solid transparent;background:transparent;color:var(--ink);border-radius:9px;padding:4px 8px;cursor:pointer;border-left:4px solid var(--c)}
.tw-i:hover{background:color-mix(in srgb,var(--c) 10%,var(--card))}
.tw-i.on{background:color-mix(in srgb,var(--c) 18%,var(--card));border-color:var(--c);font-weight:700}
.tw-i .n{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:.68rem;font-weight:800;background:var(--c);color:#fff;flex:none}
.tw-i .t{font-size:.86rem;line-height:1.15}
.tw-i small{display:block;color:var(--muted);font-weight:400;font-size:.68rem}
@media (max-width:900px){
  .tower{position:static;max-height:none;display:flex;gap:6px;overflow-x:auto;padding:8px}
  .tw-g,.tw-s{display:none}
  .tw-i{flex:none;width:auto}
  .tw-i small{display:none}
}

/* ---- thẻ chi tiết ---- */
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;overflow:clip}   /* clip (không phải hidden): để bảng nêu “dính” theo khi cuộn (position:sticky) */
.hero{position:relative;aspect-ratio:16/8;background:#222}
.hero svg{display:block;width:100%;height:100%}
.hero .photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 40%;display:block}
.hero:has(.photo){aspect-ratio:16/10}
/* thẻ hạng người: ảnh bên trái (cao bằng phần định nghĩa bên phải), định nghĩa bên phải → cân đối, ảnh không còn tràn cả chiều ngang */
.hsplit{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);align-items:stretch}
.hsplit .hero,.hsplit .hero:has(.photo){aspect-ratio:auto;min-height:430px}
.hsplit .def{padding:16px 22px 18px;display:flex;flex-direction:column;justify-content:center;font-size:.94rem;line-height:1.5}
.hsplit .def h3:first-child{margin-top:0}
@media (max-width:900px){.hsplit{grid-template-columns:1fr}.hsplit .hero,.hsplit .hero:has(.photo){aspect-ratio:16/10;min-height:0}.hsplit .def{padding:14px 18px}}
.hero .cap{position:absolute;left:0;right:0;bottom:0;padding:34px 16px 12px;background:linear-gradient(0deg,#000d,#0000);color:#fff}
.hero .cap h2{margin:0;font-size:1.5rem;text-shadow:0 2px 8px #000a}
.hero .cap p{margin:2px 0 0;font-size:.92rem;opacity:.92}
.hero .nav{position:absolute;top:10px;right:10px;display:flex;gap:6px}
.hero .nav button{width:34px;height:34px;border-radius:50%;border:0;background:#0007;color:#fff;font-size:1rem;cursor:pointer}
.hero .nav button:hover{background:#000b}
.body{padding:14px 18px 18px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 10px}
.chip{display:inline-flex;gap:5px;align-items:center;border:1.5px solid var(--line);border-radius:999px;padding:3px 11px;font-size:.82rem;background:transparent;color:var(--ink)}
.chip b{font-weight:800}
.chip.g-duc{border-color:var(--duc);color:var(--duc)}.chip.g-sac{border-color:#b9791a;color:#b9791a}.chip.g-vo{border-color:var(--vo);color:var(--vo)}
:root[data-theme="dark"] .chip.g-sac{color:var(--sac)}
.chip.warn{border-color:#b36b00;color:#b36b00}
h3{margin:16px 0 6px;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.terms{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px 14px;margin:6px 0 4px}
.terms div{border-left:3px solid var(--gold);padding-left:9px}
.terms b{display:block;font-size:.65rem;color:var(--muted);text-transform:uppercase}
.terms .p{font-style:italic;font-weight:600;color:var(--navy)}
.terms .h{font-family:"Noto Serif TC","Microsoft JhengHei","PMingLiU",serif;font-size:1.1rem}
.body p{margin:6px 0}
.diem{margin:6px 0 0;padding-left:18px}
.diem li{margin:3px 0}
.pgrid{display:flex;flex-wrap:wrap;gap:6px}
.pchip{border:1.5px solid var(--c);color:var(--c);background:transparent;border-radius:999px;padding:3px 12px;font-size:.82rem;cursor:pointer;font-weight:700}
.pchip:hover,.pchip.on{background:var(--c);color:#fff}
.pchip.off{opacity:.3;border-style:dashed;cursor:default}
.note{font-size:.82rem;color:var(--muted)}
.prompt{background:color-mix(in srgb,var(--navy) 6%,var(--card));border:1px dashed var(--line);border-radius:10px;padding:8px 10px;font-size:.82rem;white-space:pre-wrap;margin-top:6px}
.btn{border:1.5px solid var(--navy);background:transparent;color:var(--navy);border-radius:999px;padding:4px 14px;font-weight:700;font-size:.82rem;cursor:pointer}
.btn:hover,.btn.on{background:var(--navy);color:var(--bg)}
.btn.pri{background:var(--navy);color:var(--bg)}
details>summary{cursor:pointer;font-weight:700;color:var(--navy);font-size:.88rem;margin-top:6px}

/* ---- bảng tâm ---- */
.tamBox{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:start}
@media (max-width:640px){.tamBox{grid-template-columns:1fr}}
.tamGrid{width:230px;max-width:100%;display:block}
.tamGrid .off{fill:none;stroke:var(--line);stroke-width:1.2}
.tamGrid .on{stroke-width:1.2}
.tamGrid circle{cursor:pointer}
.tamGrid text{font-size:7.4px;fill:var(--muted)}
.tamGrid .dot{fill:none;stroke:var(--line);stroke-dasharray:2 2;stroke-width:1}
.tamGrid .fr{fill:#b36b00;font-weight:800}
:root[data-theme="dark"] .tamGrid .fr{fill:#f0b84a}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .tamGrid .fr{fill:#f0b84a}}
.tamGrid .xm0,.tamGrid .xm{fill:none;stroke-linecap:round;pointer-events:none}
.tamGrid .xm0{stroke:#000a;stroke-width:3.3}
.tamGrid .xm{stroke:#fff;stroke-width:1.9}
.xsym{display:inline-grid;place-items:center;width:15px;height:15px;border-radius:50%;background:#7d8590;color:#fff;font-size:.8rem;line-height:1;vertical-align:-2px}
.stat{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 8px}
.stat span{background:color-mix(in srgb,var(--navy) 8%,var(--card));border-radius:10px;padding:4px 10px;font-size:.85rem}
.stat b{font-size:1.1rem;color:var(--navy)}
.legend{display:flex;flex-wrap:wrap;gap:4px 12px;font-size:.74rem;color:var(--muted);margin:6px 0}
.legend i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:4px;vertical-align:-1px}
.extraBox{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:14px 22px;margin-top:4px}
.extraBox .ex h4{margin:0 0 6px;font-size:.98rem}
.extraBox .ex h4 small{font-weight:600;color:var(--muted);margin-left:6px}
.extraBox > .note{grid-column:1/-1;margin:0}
.tamBox2{display:grid;grid-template-columns:1fr;gap:8px;align-items:start}
.tamBox2 .tamGrid{width:100%;max-width:320px}
.tamBox2 .tamGrid text{font-size:7.6px}
.tamBox2 .tamList{columns:2 150px;font-size:.78rem}
.dotc{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:4px;vertical-align:-1px}
.tamList{columns:2 220px;font-size:.8rem;margin-top:6px}
.tamList div{break-inside:avoid;margin:1px 0}
.tamList b{color:var(--muted);font-weight:700}

/* ---- lưới người ---- */
.pgrp{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px;align-items:center}
.pgrp .lbl{font-size:.72rem;text-transform:uppercase;font-weight:800;color:var(--muted);letter-spacing:.05em}
.hcard{border:2px solid var(--c);color:var(--ink);background:var(--card);border-radius:12px;padding:6px 12px;cursor:pointer;text-align:left;min-width:108px}
.hcard small{display:block;color:var(--muted);font-size:.7rem}
.hcard b{font-size:.9rem;color:var(--c)}
.hcard.on{background:var(--c)}
.hcard.on b,.hcard.on small{color:#fff}
.strip{display:flex;gap:3px;margin:6px 0 2px}
.strip i{flex:1;height:20px;border-radius:4px;font-style:normal;font-size:.6rem;display:grid;place-items:center;color:#fff;background:var(--c);opacity:.18;cursor:pointer}
.strip i.on{opacity:1}
.strip i.cur{outline:2px solid var(--ink);outline-offset:1px}
.chain{display:flex;flex-wrap:wrap;gap:4px;align-items:center;font-size:.8rem}
.chain .s{border:1.5px solid var(--c);border-radius:8px;padding:2px 8px;color:var(--c);font-weight:700}
.chain .s.on{background:var(--c);color:#fff}
.chain .s.no{opacity:.3}
.chain .a{color:var(--muted)}

/* ---- tục sinh ---- */
.subnav{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:0 0 6px}
.subnav .pill{font:inherit;font-size:.9rem;padding:6px 14px;border-radius:999px;border:1.5px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;font-weight:600}
.subnav .pill:hover{border-color:var(--navy)}
section.part{scroll-margin-top:64px;margin:0 0 8px}
.partT{font-size:1.35rem;color:var(--navy);margin:18px 0 8px;padding-bottom:6px;border-bottom:2px solid var(--line)}
.sec{margin:0 0 20px}
.sec>h2{font-size:1.15rem;color:var(--navy);margin:0 0 4px}
.rules{width:100%;border-collapse:collapse;font-size:.88rem}
.rules th{font-size:.7rem;text-transform:uppercase;color:var(--muted);text-align:left;padding:4px 8px;border-bottom:2px solid var(--line)}
.rules td{padding:6px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.rules tr{cursor:pointer}
.rules tr:hover td{background:color-mix(in srgb,var(--navy) 6%,var(--card))}
.rules tr.on td{background:color-mix(in srgb,var(--gold) 20%,var(--card))}
.rules .no{width:34px;font-weight:800;color:#fff}
.rules .no span{display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--c);font-size:.75rem}
.rules .arr{color:var(--muted);width:24px;text-align:center}
.nho{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:8px}
.nho div{background:color-mix(in srgb,var(--gold) 12%,var(--card));border-left:4px solid var(--gold);border-radius:8px;padding:8px 12px;font-size:.88rem}
.machine{background:var(--card);border:2px solid var(--navy);border-radius:16px;padding:14px 16px}
.machine .row{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:6px 0}
.machine .row .lbl{font-size:.72rem;text-transform:uppercase;font-weight:800;color:var(--muted);min-width:96px}
.seg{display:inline-flex;border:1.5px solid var(--navy);border-radius:999px;overflow:hidden}
.seg button{border:0;background:transparent;color:var(--navy);padding:4px 14px;font-weight:700;cursor:pointer}
.seg button.on{background:var(--navy);color:var(--bg)}
.map{width:100%;display:block;margin:6px 0}
.map .cell{cursor:pointer}
.map text{font-size:11px;fill:#fff;font-weight:700;pointer-events:none}
.map .arc{fill:none;stroke-width:2.2;stroke-linecap:round;opacity:.75;animation:draw 1.1s ease}
@keyframes draw{from{stroke-dashoffset:var(--len)}}
.map .srcg{transform-box:fill-box;transform-origin:center;transform:scale(1.22)}
.map .ping{transform-box:fill-box;transform-origin:center;animation:ping 1.7s ease-out infinite;pointer-events:none}
@keyframes ping{from{opacity:.95;transform:scale(1)}to{opacity:0;transform:scale(1.9)}}
.map .pin text{font-size:9.5px;font-weight:800;letter-spacing:.04em}
@media (prefers-reduced-motion: reduce){.map .arc{animation:none;stroke-dashoffset:0}.map .ping{animation:none;opacity:0}}
/* dải chấm “tâm số N” + sáng chấm trên bảng 121 tâm khi rê chuột */
.tstrip{display:inline-flex;align-items:center;gap:5px;vertical-align:middle;margin:1px 3px;padding:1px 7px 1px 6px;border:1px solid var(--line);border-radius:999px;background:color-mix(in srgb,var(--card) 82%,var(--line));white-space:nowrap;line-height:1}
.tstrip .rl{font-style:normal;font-size:.66rem;color:var(--muted);font-weight:700}
.tstrip svg{display:block}
.tstrip .off{fill:none;stroke:var(--line);stroke-width:1.1}
.tstrip .on{stroke-width:1}
.tstrip .sx{fill:none;stroke:#fff;stroke-width:1.2;stroke-linecap:round}
.tref{cursor:help}
.tsl{display:flex;flex-wrap:wrap;align-items:center;gap:2px 6px;margin:2px 0}
.tsl .tname{font-weight:700}
.tsl small{color:var(--muted)}
table.rules tr[data-tam]:hover td{background:color-mix(in srgb,var(--gold) 14%,transparent)}
/* bảng nêu (trái) + bảng tâm tục sinh (phải) ngang nhau; bảng nêu dính khi cuộn để luôn thấy chấm đang chỉ */
.tsSplit{display:grid;grid-template-columns:250px minmax(0,1fr);gap:20px;align-items:start}
.tsChart{position:sticky;top:64px;align-self:start}
.tsSide{padding-bottom:50px}
.tsChart .tamGrid{width:100%}
.tsCap{min-height:44px;display:flex;align-items:center;font-size:.86rem;line-height:1.35;padding:6px 10px;margin-bottom:6px;border-radius:10px;background:color-mix(in srgb,var(--gold) 14%,var(--card));border:1px solid color-mix(in srgb,var(--gold) 45%,var(--line))}
@media (max-width:900px){.tsSplit{grid-template-columns:1fr}.tsChart{position:static;max-width:300px;margin:0 auto}}
@keyframes halop{from{opacity:.5}to{opacity:1}}
@media (prefers-reduced-motion: reduce){.hlg .halo{animation:none}}
/* chấm được chọn: bản phóng to đè lên chấm gốc (các chấm khác giữ nguyên) */
.hlg .halo{fill:#ffd23f55;stroke:#ffd23f;stroke-width:3;animation:halop .9s ease-in-out infinite alternate}
.hlg .big{stroke:#fff;stroke-width:2.4}
.hlg .bx0{fill:none;stroke:#000b;stroke-width:5.4;stroke-linecap:round}
.hlg .bx{fill:none;stroke:#fff;stroke-width:3;stroke-linecap:round}
/* điện thoại: bảng nêu hiện che lên bảng, chạm đâu cũng đóng */
.tsOv{position:fixed;inset:0;z-index:300;background:#000a;display:flex;align-items:center;justify-content:center;padding:12px;cursor:pointer}
.tsOv[hidden]{display:none}
.tsOvIn{background:var(--card);color:var(--ink);border:2px solid var(--gold);border-radius:14px;padding:10px 12px;max-width:100%;max-height:96vh;overflow:auto;text-align:center}
.tsOvIn .tsCap{text-align:left}
.tsOvIn svg.tamGrid{width:auto;max-width:100%;max-height:72vh;margin:0 auto}
.tsOvHint{margin:6px 0 0;font-size:.8rem;color:var(--muted)}
table.tstbl tbody tr[data-tam]{cursor:pointer}
table.tstbl tbody tr.sel td{background:color-mix(in srgb,var(--gold) 24%,transparent)}
table.tstbl tbody tr.sel td:first-child{box-shadow:inset 4px 0 0 var(--gold)}
.tsrule{background:color-mix(in srgb,var(--navy) 6%,var(--card));border-left:4px solid var(--navy);border-radius:8px;padding:8px 14px;margin:8px 0;font-size:.92rem}
.tsrule ul{margin:4px 0 2px}
.tsrule li{margin:2px 0}
.tsrule ul ul{margin:2px 0 2px;padding-left:20px}
.maplegend{display:flex;flex-wrap:wrap;gap:4px 16px;margin:2px 0 8px;font-size:.8rem;color:var(--muted)}
.maplegend span{display:inline-flex;align-items:center;gap:7px}
.maplegend b{color:var(--ink)}
.maplegend .sw{display:inline-block;width:20px;height:18px;border-radius:5px;background:var(--line);flex:none}
.maplegend .sw.src{border:3px solid #ffd23f;box-shadow:0 0 0 2px #0d2a47;transform:scale(1.05)}
.maplegend .sw.dst{border:3px solid #1d7a43}
.maplegend .sw.both{border:3px solid #ffd23f;box-shadow:0 0 0 3px #1d7a43}
.res{display:grid;gap:6px;margin-top:6px}
.restitle{margin:14px 0 4px;font-size:1.02rem;line-height:1.45;text-transform:none;letter-spacing:0}
.resrow{display:grid;grid-template-columns:215px minmax(0,1fr) minmax(0,1.2fr);gap:4px 12px;align-items:start;border-top:1px solid var(--line);padding:7px 0}
.resrow .who{font-weight:800;color:var(--c)}
.resrow .where{font-size:.92rem}
.resrow .ts{font-size:.86rem;color:var(--ink)}
.resrow .up{grid-column:1/-1;font-size:.84rem;color:var(--muted);background:color-mix(in srgb,var(--c) 9%,transparent);border-left:3px solid var(--c);border-radius:6px;padding:4px 10px}
.resrow .up b{color:var(--ink)}
.resrow.reshead{border-top:0;border-bottom:2px solid var(--line);padding:2px 0 4px;font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
.resrow.reshead > div{white-space:nowrap}
.resrow.reshead small{display:block;text-transform:none;letter-spacing:0;font-weight:500}
@media (max-width:700px){.resrow{grid-template-columns:1fr}.resrow.reshead{display:none}
  .resrow .where::before,.resrow .ts::before{content:attr(data-l);color:var(--muted);font-size:.8rem}}
.rulebox{background:color-mix(in srgb,var(--gold) 16%,var(--card));border-left:4px solid var(--gold);border-radius:8px;padding:8px 12px;margin:8px 0;font-size:.9rem}
.flow{display:flex;flex-wrap:wrap;gap:6px;align-items:center;justify-content:center;margin:10px 0}
.flow .nd{background:var(--card);border:2px solid var(--c);color:var(--ink);border-radius:12px;padding:8px 12px;text-align:center;font-size:.85rem;min-width:108px}
.flow .nd b{display:block;color:var(--c)}
.flow .ar{font-size:1.4rem;color:var(--muted)}
.flow .nd.pulse{animation:glow 3s ease-in-out infinite}
.flow .nd:nth-child(3){animation-delay:.6s}.flow .nd:nth-child(5){animation-delay:1.2s}.flow .nd:nth-child(7){animation-delay:1.8s}
@keyframes glow{0%,100%{box-shadow:0 0 0 0 transparent}50%{box-shadow:0 0 14px 2px color-mix(in srgb,var(--c) 55%,transparent)}}
.quiz{background:var(--card);border:1.5px dashed var(--navy);border-radius:14px;padding:12px 16px}
.quiz .opts{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.quiz .opts label{border:1.5px solid var(--line);border-radius:999px;padding:3px 12px;cursor:pointer;font-size:.86rem;user-select:none}
.quiz .opts label.on{border-color:var(--navy);background:color-mix(in srgb,var(--navy) 12%,var(--card))}
.quiz .opts label.ok{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 18%,var(--card))}
.quiz .opts label.miss{border-color:#2a63c4;background:color-mix(in srgb,#2a63c4 16%,var(--card))}
.quiz .opts label.extra{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 16%,var(--card))}
.quiz input{display:none}
.fb{margin-top:6px;font-size:.9rem}

/* ---- tooltip ---- */
.tip{position:fixed;z-index:60;max-width:340px;background:var(--card);color:var(--ink);border:2px solid var(--navy);border-radius:10px;padding:8px 10px;box-shadow:0 8px 24px #0005;font-size:.84rem;pointer-events:none}
.tip b{color:var(--navy)}
.tip i{display:block;color:var(--navy)}
.tip .h{font-family:"Noto Serif TC","Microsoft JhengHei",serif;font-size:1rem}
/* điện thoại: 3 tab (thêm ⚡ Trò chơi) nằm gọn một hàng – thanh tab dính ở đầu màn hình nên không để nó cao 2–3 hàng */
@media (max-width:520px){#tabs{gap:5px;padding:8px 8px}#tabs button{padding:7px 11px;font-size:.88rem}#tabs .tabLong{display:none}}