/* SỬ VIỆT 3H — giao diện. Sơn mài + sông nước miền Tây. */
:root{
  --bg:#F1F3EF; --surface:#FFFFFF; --ink:#1D2925; --muted:#5B6964; --line:#D6DDD8;
  --son:#A8241C; --phusa:#1F6B63; --lua:#C08A1E; --lua-ink:#7A5208;
  --son-soft:#F7E6E3; --phusa-soft:#E2EFEC; --lua-soft:#FBF0D6;
  --on-accent:#FFFFFF; --code-bg:#F7F8F5; --shadow:0 1px 2px rgba(29,41,37,.06),0 8px 24px -12px rgba(29,41,37,.18);
  --f-display:"Alegreya",Georgia,"Times New Roman",serif;
  --f-body:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r:16px; --nav-h:64px; --bot-h:68px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#131A18; --surface:#1B2422; --ink:#E7ECE9; --muted:#9DB0AA; --line:#2F3D39;
  --son:#EF7A6C; --phusa:#6CC3B6; --lua:#E3B450; --lua-ink:#F2CF86;
  --son-soft:#3A201D; --phusa-soft:#183330; --lua-soft:#3A2E12; --on-accent:#131A18; --code-bg:#151D1B;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#131A18; --surface:#1B2422; --ink:#E7ECE9; --muted:#9DB0AA; --line:#2F3D39;
  --son:#EF7A6C; --phusa:#6CC3B6; --lua:#E3B450; --lua-ink:#F2CF86;
  --son-soft:#3A201D; --phusa-soft:#183330; --lua-soft:#3A2E12; --on-accent:#131A18; --code-bg:#151D1B;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.65;
  overflow-x:hidden;padding-bottom:calc(var(--bot-h) + env(safe-area-inset-bottom,0px))}
@media(min-width:900px){body{padding-bottom:0}}
img,svg{max-width:100%}
a{color:var(--phusa);text-underline-offset:3px}
a:hover{color:var(--son)}
h1,h2,h3,h4{font-family:var(--f-display);line-height:1.12;margin:0 0 .5em;font-weight:800;text-wrap:balance}
h1{font-size:clamp(34px,6vw,60px)} h2{font-size:clamp(26px,4vw,38px)} h3{font-size:22px} h4{font-size:18px}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--son);outline-offset:2px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:8px;top:-60px;background:var(--son);color:var(--on-accent);padding:10px 16px;border-radius:8px;z-index:100}
.skip:focus{top:8px}
.container{width:100%;max-width:1120px;margin:0 auto;padding-inline:max(16px,env(safe-area-inset-left,0px)) max(16px,env(safe-area-inset-right,0px))}
.muted{color:var(--muted)} .center{text-align:center}
.eyebrow{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:var(--phusa);margin:0 0 10px}

/* ---------- Thanh trên ---------- */
.topbar{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:saturate(1.4) blur(12px);
  -webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top,0px)}
.topbar .container{display:flex;align-items:center;gap:8px;height:var(--nav-h)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-family:var(--f-display);font-weight:800;font-size:21px;letter-spacing:.01em;margin-right:auto}
.logo i{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--son);color:#fff;font-style:normal;font-family:var(--f-body);font-size:15px;font-weight:700;
  box-shadow:inset 0 -3px 0 rgba(0,0,0,.18)}
.logo:hover{color:var(--ink)}
.navlinks{display:none;gap:2px}
.navlinks a{padding:9px 13px;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:600;font-size:15px;min-height:44px;display:inline-flex;align-items:center}
.navlinks a:hover{background:var(--line);color:var(--ink)}
.navlinks a[aria-current="page"]{background:var(--ink);color:var(--bg)}
@media(min-width:900px){.navlinks{display:flex}}
.iconbtn{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:grid;place-items:center;cursor:pointer;padding:0}
.iconbtn:hover{border-color:var(--ink)}
.iconbtn svg{width:22px;height:22px}
.menu-btn{display:grid} @media(min-width:900px){.menu-btn{display:none}}
.sheet{position:fixed;inset:0;z-index:80;background:rgba(10,16,14,.5);display:none}
.sheet.open{display:block}
.sheet nav{position:absolute;right:0;top:0;bottom:0;width:min(320px,86vw);background:var(--surface);padding:calc(18px + env(safe-area-inset-top,0px)) 18px 18px;display:grid;align-content:start;gap:4px;box-shadow:var(--shadow)}
.sheet nav a{padding:14px 12px;border-radius:12px;text-decoration:none;color:var(--ink);font-weight:600;display:flex;gap:12px;align-items:center;min-height:48px}
.sheet nav a:hover{background:var(--bg)}
.sheet nav svg{width:22px;height:22px;color:var(--phusa)}

/* ---------- Thanh dưới (điện thoại) ---------- */
.botnav{position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--surface);border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,1fr);padding:6px 6px calc(6px + env(safe-area-inset-bottom,0px));min-height:var(--bot-h)}
@media(min-width:900px){.botnav{display:none}}
.botnav a{display:grid;justify-items:center;align-content:center;gap:2px;text-decoration:none;color:var(--muted);font-size:12px;font-weight:600;min-height:52px;border-radius:12px;padding:4px 2px}
.botnav svg{width:26px;height:26px}
.botnav a[aria-current="page"]{color:var(--son);background:var(--son-soft)}

/* ---------- Nút ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:700;font-size:15px;min-height:46px;padding:10px 20px;border-radius:12px;
  border:1.5px solid var(--son);background:var(--son);color:var(--on-accent);cursor:pointer;text-decoration:none;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 18px -10px var(--son);color:var(--on-accent)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.btn.phusa{background:var(--phusa);border-color:var(--phusa)} .btn.phusa:hover{box-shadow:0 8px 18px -10px var(--phusa)}
.btn.lua{background:var(--lua);border-color:var(--lua);color:#201505} .btn.lua:hover{color:#201505;box-shadow:0 8px 18px -10px var(--lua)}
.btn.ghost{background:transparent;color:var(--son)} .btn.ghost:hover{background:var(--son-soft);color:var(--son);box-shadow:none}
.btn.ghost.p{color:var(--phusa);border-color:var(--phusa)} .btn.ghost.p:hover{background:var(--phusa-soft);color:var(--phusa)}
.btn.sm{min-height:44px;padding:8px 14px;font-size:14px}
.btn svg{width:18px;height:18px}
.btns{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- Huy hiệu ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;line-height:1.5;white-space:nowrap}
.badge.ok{background:var(--phusa-soft);color:var(--phusa)}
.badge.ai{background:var(--lua-soft);color:var(--lua-ink)}
.badge.hs{background:var(--son-soft);color:var(--son)}
.badge.n{background:var(--bg);color:var(--muted);border:1px solid var(--line)}
.badges{display:flex;flex-wrap:wrap;gap:6px}

/* ---------- Thẻ ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--shadow)}
a.card,.card.link{text-decoration:none;color:var(--ink);display:block;transition:transform .2s,border-color .2s}
a.card:hover,.card.link:hover{transform:translateY(-3px);border-color:var(--phusa);color:var(--ink)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr))}
.section{padding-block:clamp(36px,7vw,72px)}
.section.tight{padding-block:clamp(24px,4vw,40px)}
.sec-head{max-width:720px;margin-bottom:28px}
.sec-head p{color:var(--muted);font-size:17px;margin:0}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding-block:clamp(28px,6vw,64px) 0}
.hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px,color-mix(in srgb,var(--phusa) 28%,transparent) 1.2px,transparent 1.6px);background-size:22px 22px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 78% 30%,#000 10%,transparent 72%);mask-image:radial-gradient(ellipse 80% 70% at 78% 30%,#000 10%,transparent 72%)}
.hero-grid{position:relative;z-index:1;display:grid;gap:12px;align-items:center}
@media(min-width:900px){.hero-grid{grid-template-columns:1.25fr .75fr;gap:36px}}
.hero h1{font-size:clamp(48px,11vw,104px);letter-spacing:-.01em;margin-bottom:.15em;line-height:.95}
.hero h1 em{font-style:normal;color:var(--son)}
.hero h1 .h3{display:inline-block;background:var(--son);color:var(--on-accent);padding:0 .18em;border-radius:.16em;margin-left:.08em;transform:rotate(-2deg)}
.hero .sub{font-size:clamp(17px,2.4vw,21px);color:var(--muted);max-width:34em;margin-bottom:22px}
.hero .sub b{color:var(--ink)}
.hero-art{position:relative;display:flex;flex-direction:column;align-items:center;gap:6px}
.hero-art .mascot{width:min(260px,62vw);filter:drop-shadow(0 18px 18px rgba(29,41,37,.18));animation:bob 5s ease-in-out infinite}
.bubble{position:relative;background:var(--surface);border:1.5px solid var(--ink);border-radius:18px;padding:12px 16px;font-size:15px;line-height:1.5;max-width:300px;box-shadow:4px 4px 0 var(--lua)}
.hero-art .bubble{margin-bottom:24px}
.bubble::after{content:"";position:absolute;bottom:-10px;left:36px;width:16px;height:16px;background:var(--surface);border-right:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);transform:rotate(45deg)}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.wave{display:block;width:100%;height:36px;color:var(--bg)}
.wave.dk{color:var(--line)}
.wave-divider{height:18px;color:var(--phusa);opacity:.45;margin-block:8px}

/* ---------- Vòng 3H ---------- */
.wheel-sec{display:grid;gap:28px;align-items:center}
@media(min-width:900px){.wheel-sec{grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr)}}
.wheel{width:min(100%,420px);margin:0 auto;display:block;overflow:visible}
.wheel a path{transition:transform .25s,filter .25s;transform-origin:160px 160px;cursor:pointer}
.wheel a:hover path,.wheel a:focus-visible path{transform:scale(1.035);filter:brightness(1.08)}
.wheel text{font-family:var(--f-body);font-weight:700;fill:#fff;pointer-events:none}
.wheel .core{fill:var(--surface);stroke:var(--line)}
.wheel .core-t{fill:var(--ink);font-family:var(--f-display);font-weight:800}
.hlist{display:grid;gap:12px}
.hrow{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center;padding:14px 16px;border-radius:14px;border:1px solid var(--line);background:var(--surface);text-decoration:none;color:var(--ink);transition:transform .2s,border-color .2s}
.hrow:hover{transform:translateX(4px);color:var(--ink)}
.hrow b{font-family:var(--f-display);font-size:22px;display:block;line-height:1.1}
.hrow span{color:var(--muted);font-size:15px}
.hrow .dot{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;color:#fff}
.hrow .dot svg{width:24px;height:24px}
.c-hoi{--c:var(--son);--cs:var(--son-soft)} .c-hieu{--c:var(--phusa);--cs:var(--phusa-soft)} .c-hd{--c:var(--lua);--cs:var(--lua-soft)}
.hrow.c-hoi .dot{background:var(--son)} .hrow.c-hieu .dot{background:var(--phusa)} .hrow.c-hd .dot{background:var(--lua);color:#201505}
.hrow.c-hoi:hover{border-color:var(--son)} .hrow.c-hieu:hover{border-color:var(--phusa)} .hrow.c-hd:hover{border-color:var(--lua)}

/* ---------- 3 nút lớn ---------- */
.bigs{display:grid;gap:16px}
@media(min-width:760px){.bigs{grid-template-columns:repeat(3,1fr)}}
.big{position:relative;overflow:hidden;display:grid;gap:8px;align-content:start;padding:26px 24px 24px;border-radius:20px;text-decoration:none;min-height:190px;
  background:var(--cs);border:1.5px solid color-mix(in srgb,var(--c) 40%,transparent);color:var(--ink);transition:transform .25s,box-shadow .25s}
.big:hover{transform:translateY(-5px);box-shadow:0 22px 30px -22px var(--c);color:var(--ink)}
.big .ic{width:54px;height:54px;border-radius:16px;background:var(--c);display:grid;place-items:center;color:#fff}
.big.c-hd .ic{color:#201505}
.big .ic svg{width:30px;height:30px}
.big h3{font-size:34px;margin:6px 0 0;letter-spacing:.02em;color:var(--ink)}
.big p{margin:0;color:var(--muted);padding-right:52px}
.big .go{position:absolute;right:20px;bottom:18px;width:40px;height:40px;border-radius:50%;background:var(--c);color:#fff;display:grid;place-items:center;transition:transform .25s}
.big.c-hd .go{color:#201505}
.big:hover .go{transform:translateX(5px)}
.big .go svg{width:20px;height:20px}
.big::after{content:attr(data-n);position:absolute;right:-6px;top:-18px;font-family:var(--f-display);font-weight:800;font-size:120px;line-height:1;color:var(--c);opacity:.09;pointer-events:none}

/* ---------- Số liệu ---------- */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:760px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{padding:20px;border-radius:var(--r);background:var(--surface);border:1px solid var(--line);position:relative;overflow:hidden}
.stat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c,var(--phusa))}
.stat b{font-family:var(--f-display);font-size:clamp(34px,6vw,50px);font-weight:800;line-height:1;display:block;font-variant-numeric:tabular-nums}
.stat span{color:var(--muted);font-size:14px}

/* ---------- Kéo ngang ---------- */
.hscroll{display:flex;gap:14px;overflow-x:auto;padding:4px 2px 16px;scroll-snap-type:x proximity;overflow-y:hidden;-webkit-overflow-scrolling:touch}
.hscroll>*{flex:0 0 min(280px,78vw);scroll-snap-align:start}

/* ---------- Thẻ sản phẩm HS ---------- */
.prod{display:flex;flex-direction:column;padding:0;overflow:hidden;cursor:pointer;text-align:left;font:inherit;color:inherit;width:100%}
.prod .cover{aspect-ratio:16/10;position:relative;display:grid;place-items:center;color:#fff;overflow:hidden}
.prod .cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.prod a{color:inherit;text-decoration:none}
.prod .cover svg.pat{position:absolute;inset:0;width:100%;height:100%;opacity:.35}
.prod .cover .ct{position:relative;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;background:rgba(0,0,0,.28);padding:3px 10px;border-radius:999px}
.prod .body{padding:14px 16px 16px;display:grid;gap:8px;flex:1}
.prod h4{margin:0;font-size:19px}
.prod .meta{font-size:13.5px;color:var(--muted)}
.prod .foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto}
.heart{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:999px;min-height:44px;padding:4px 14px;font:inherit;font-weight:700;cursor:pointer}
.heart svg{width:18px;height:18px}
.heart[aria-pressed="true"]{color:var(--son);border-color:var(--son);background:var(--son-soft)}
.heart[aria-pressed="true"] svg{fill:currentColor}

/* ---------- Nội quy ---------- */
.rules5{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(min(100%,150px),1fr))}
.rule-mini{text-align:center;padding:16px 10px;border-radius:14px;background:var(--surface);border:1px solid var(--line);font-size:14px;font-weight:600;line-height:1.35}
.rule-mini i{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;margin:0 auto 8px;background:var(--phusa-soft);color:var(--phusa);font-style:normal}
.rule-mini svg{width:24px;height:24px}
.rule-card{display:grid;gap:12px}
@media(min-width:760px){.rule-card{grid-template-columns:auto 1fr;gap:22px}}
.rule-card .num{width:64px;height:64px;border-radius:18px;background:var(--son);color:#fff;display:grid;place-items:center;font-family:var(--f-display);font-weight:800;font-size:34px}
.dd{display:grid;gap:10px;margin-top:10px}
@media(min-width:620px){.dd{grid-template-columns:1fr 1fr}}
.dd div{padding:10px 14px;border-radius:12px;font-size:15px}
.dd .yes{background:var(--phusa-soft);border-left:4px solid var(--phusa)} .dd .no{background:var(--son-soft);border-left:4px solid var(--son)}
.dd b{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase}
.dd .yes b{color:var(--phusa)} .dd .no b{color:var(--son)}
.tf{display:grid;gap:10px;padding:14px 0;border-bottom:1px solid var(--line)}
.tf .opts{display:flex;gap:8px}
.tf .opts button{flex:1;min-height:46px;border-radius:10px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);font:inherit;font-weight:700;cursor:pointer}
.tf .opts button[aria-pressed="true"]{border-color:var(--phusa);background:var(--phusa-soft)}
.tf .opts button.right{border-color:var(--phusa);background:var(--phusa);color:var(--on-accent)}
.tf .opts button.wrong{border-color:var(--son);background:var(--son);color:var(--on-accent)}
.tf .why{font-size:14px;color:var(--muted)}
.medal{display:none;text-align:center;padding:28px;border-radius:20px;background:linear-gradient(145deg,var(--lua-soft),var(--phusa-soft));border:2px solid var(--lua);margin-top:18px}
.medal.show{display:block;animation:pop .5s}
.medal .seal{width:110px;height:110px;margin:0 auto 10px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#E8B948,var(--lua) 60%,#8A5F0A);display:grid;place-items:center;color:#201505;box-shadow:0 8px 20px -8px #8A5F0A,inset 0 0 0 5px rgba(255,255,255,.35)}
.medal .seal svg{width:56px;height:56px}
@keyframes pop{from{transform:scale(.9);opacity:0}to{transform:none;opacity:1}}

/* ---------- Đầu trang con ---------- */
.pagehead{position:relative;overflow:hidden;padding-block:clamp(28px,5vw,52px) clamp(24px,4vw,36px);background:var(--cs,var(--phusa-soft));border-bottom:1px solid var(--line)}
.pagehead::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 1px 1px,color-mix(in srgb,var(--c,var(--phusa)) 30%,transparent) 1.2px,transparent 1.6px);background-size:20px 20px;
  -webkit-mask-image:linear-gradient(90deg,transparent 30%,#000);mask-image:linear-gradient(90deg,transparent 30%,#000);pointer-events:none}
.pagehead .container{position:relative;display:grid;gap:16px;align-items:center}
@media(min-width:760px){.pagehead .container.has-art{grid-template-columns:1fr auto}}
.pagehead h1{font-size:clamp(32px,5.5vw,52px);margin-bottom:.2em}
.pagehead p{margin:0;max-width:44em;color:var(--muted);font-size:17px}
.tag3h{display:inline-block;justify-self:start;width:fit-content;background:var(--c,var(--phusa));color:#fff;font-weight:700;font-size:12.5px;letter-spacing:.12em;padding:4px 12px;border-radius:999px;margin-bottom:12px}
.c-hd .tag3h{color:#201505}
.crumbs{font-size:14px;margin-bottom:12px;color:var(--muted)} .crumbs a{color:var(--muted)} .crumbs a:hover{color:var(--son)}
.mascot-sm{width:130px}

/* ---------- Thư viện ---------- */
.khoi{display:grid;gap:6px;padding:26px 24px;border-radius:20px;text-decoration:none;color:#fff;position:relative;overflow:hidden;min-height:180px}
.khoi:hover{color:#fff;transform:translateY(-4px)}
.khoi{transition:transform .25s}
.khoi .big-n{position:absolute;right:10px;top:-14px;font-family:var(--f-display);font-weight:800;font-size:130px;line-height:1;opacity:.18}
.khoi h3{font-size:36px;margin:0;color:#fff} .khoi p{margin:0;opacity:.92}
.khoi.k10{background:linear-gradient(140deg,#1F6B63,#2B8A7E)} .khoi.k11{background:linear-gradient(140deg,#8C6A12,#C08A1E)} .khoi.k12{background:linear-gradient(140deg,#8F1D16,#B8342B)}
.khoi.k69{background:var(--surface);color:var(--muted);border:2px dashed var(--line);opacity:.85} .khoi.k69 h3{color:var(--muted)} .khoi.k69:hover{color:var(--muted);transform:none}
.khoi .pill{display:inline-block;background:rgba(255,255,255,.22);padding:2px 12px;border-radius:999px;font-size:13px;font-weight:600;width:fit-content}
.searchbox{position:relative}
.searchbox input{padding-left:46px}
.searchbox svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--muted)}
.cd-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.cd-card .cv{height:92px;position:relative;color:#fff;display:flex;align-items:flex-end;padding:10px 16px}
.cd-card .cv b{font-family:var(--f-display);font-size:46px;line-height:1;font-weight:800;opacity:.95}
.cd-card .cv svg{position:absolute;inset:0;width:100%;height:100%;opacity:.3}
.cd-card .bd{padding:14px 16px 16px;display:grid;gap:10px;flex:1;align-content:start}
.cd-card h4{margin:0;font-size:19px;line-height:1.2}
.dots4{display:flex;gap:8px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.dots4 span{display:inline-flex;align-items:center;gap:5px}
.dots4 i{width:10px;height:10px;border-radius:50%;border:2px solid var(--line);display:inline-block}
.dots4 i.on{background:var(--phusa);border-color:var(--phusa)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px;align-items:center}
.chip{font:inherit;font-size:14px;font-weight:600;padding:8px 14px;min-height:44px;border-radius:999px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}
.chip[aria-pressed="true"]{border-color:var(--phusa);background:var(--phusa-soft);color:var(--phusa)}
.tabs{display:flex;gap:6px;overflow-x:auto;border-bottom:2px solid var(--line);margin-bottom:22px;-webkit-overflow-scrolling:touch}
.tabs button{font:inherit;font-weight:700;font-size:15px;padding:12px 16px;min-height:48px;border:0;background:none;color:var(--muted);cursor:pointer;white-space:nowrap;border-bottom:3px solid transparent;margin-bottom:-2px}
.tabs button[aria-selected="true"]{color:var(--phusa);border-bottom-color:var(--phusa)}
.tabs button .d{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--line);margin-left:6px}
.tabs button .d.on{background:var(--phusa)}
.stamp{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;margin-top:26px;padding-top:14px;border-top:1px dashed var(--line);font-size:14px;color:var(--muted)}
.demo-note{background:var(--lua-soft);color:var(--lua-ink);padding:10px 14px;border-radius:12px;font-size:14px;margin-bottom:18px}

/* Sách lật */
.flip{max-width:760px;margin-inline:auto}
.flip-stage{position:relative;aspect-ratio:4/3;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);touch-action:pan-y}
.flip-track{display:flex;height:100%;transition:transform .45s cubic-bezier(.3,.7,.2,1)}
.slide{flex:0 0 100%;height:100%;padding:clamp(18px,4vw,36px);display:grid;grid-template-rows:auto auto 1fr;gap:8px;align-content:start;position:relative;overflow:hidden;color:#fff}
.slide .yr{font-family:var(--f-display);font-weight:800;font-size:clamp(44px,11vw,84px);line-height:.95}
.slide h4{font-size:clamp(20px,3.6vw,28px);margin:0;color:#fff}
.slide ul{margin:6px 0 0;padding-left:20px;font-size:clamp(14px,2.2vw,17px);display:grid;gap:4px;align-content:start}
.slide .pg{position:absolute;right:16px;bottom:10px;font-size:13px;opacity:.8}
.slide svg.bgp{position:absolute;right:-30px;bottom:-30px;width:55%;opacity:.14;pointer-events:none}
.flip-ctl{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:14px}
.flip-dots{display:flex;gap:7px}
.flip-dots button{width:12px;height:12px;border-radius:50%;border:0;background:var(--line);padding:0;cursor:pointer;position:relative}
.flip-dots button::after{content:"";position:absolute;inset:-16px -4px}
.flip-dots button[aria-current="true"]{background:var(--son);transform:scale(1.25)}
.flip-stage:fullscreen{border-radius:0;aspect-ratio:auto}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface);-webkit-overflow-scrolling:touch}
.table-wrap table,.prose table{border-collapse:collapse;width:100%;min-width:620px;font-size:15px}
.table-wrap th,.table-wrap td,.prose td,.prose th{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.table-wrap th,.prose th{background:var(--phusa);color:var(--on-accent);font-size:13px;letter-spacing:.04em;position:sticky;top:0}
.table-wrap tr:nth-child(even) td{background:color-mix(in srgb,var(--bg) 60%,transparent)}
.prose{max-width:72ch} .prose h3{margin-top:1.6em;scroll-margin-top:90px} .prose li{margin-bottom:.35em}
.prose img{border-radius:12px;height:auto}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.toc a{padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);text-decoration:none;font-size:14px;font-weight:600;color:var(--ink);min-height:36px;display:inline-flex;align-items:center}
.toc a:hover{border-color:var(--phusa);color:var(--phusa)}
.y10{counter-reset:y;list-style:none;padding:0;margin:0;display:grid;gap:10px;max-width:760px}
.y10 li{counter-increment:y;display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
.y10 li::before{content:counter(y);width:36px;height:36px;border-radius:50%;background:var(--phusa);color:var(--on-accent);display:grid;place-items:center;font-weight:700}
.y10 .hid{background:var(--lua-soft);color:var(--lua-ink);border:1px dashed var(--lua);border-radius:8px;padding:0 10px;cursor:pointer;font:inherit;font-weight:600;min-height:32px}
.q-grp{margin-bottom:26px} .q-grp h3{display:flex;align-items:center;gap:10px}
.q{padding:16px;background:var(--surface);border:1px solid var(--line);border-radius:14px;margin-bottom:12px;display:grid;gap:10px}
.q p{margin:0;font-weight:600}
.q .gy{background:var(--phusa-soft);padding:10px 14px;border-radius:10px;font-size:15px;display:none}
.q .gy.show{display:block}
.mat-card{display:grid;gap:8px;align-content:start}
.mat-card .typ{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--phusa)}
.ytframe{aspect-ratio:16/9;width:100%;border:0;border-radius:12px}
.empty{display:grid;justify-items:center;text-align:center;gap:10px;padding:34px 16px;border:2px dashed var(--line);border-radius:18px;color:var(--muted)}
.empty .mascot{width:110px}

/* ---------- Form & modal ---------- */
.form{display:grid;gap:14px}
.fld{display:grid;gap:6px}
.fld label,.fld .lb{font-weight:700;font-size:14.5px}
.fld .hint{font-size:13px;color:var(--muted);font-weight:400}
input,textarea,select{font:inherit;font-size:16px;width:100%;padding:11px 13px;min-height:46px;border:1.5px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink)}
textarea{min-height:84px;resize:vertical}
input[type=checkbox],input[type=radio]{width:auto;min-height:0}
input[type=file]{padding:9px}
.row2{display:grid;gap:12px}
@media(min-width:560px){.row2{grid-template-columns:1fr 1fr}}
.check{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;background:var(--bg);border:1px solid var(--line);border-radius:10px;font-size:15px;cursor:pointer}
.check input{margin-top:5px;accent-color:var(--phusa);width:20px;height:20px}
.errmsg{color:var(--son);font-size:14px;font-weight:600;min-height:1.2em}
.modal{position:fixed;inset:0;z-index:90;display:none;background:rgba(10,16,14,.55);align-items:flex-start;justify-content:center;overflow-y:auto;padding:max(16px,env(safe-area-inset-top,0px)) 16px 32px}
.modal.open{display:flex}
.modal .box{background:var(--surface);border-radius:20px;max-width:680px;width:100%;margin-top:3vh;padding:clamp(18px,4vw,30px);box-shadow:0 30px 60px -20px rgba(0,0,0,.5);position:relative}
.modal .x{position:absolute;right:12px;top:12px}
.modal h3{padding-right:50px}
.editor-bar{display:flex;gap:6px;flex-wrap:wrap}
.editor-bar button{min-width:44px;min-height:44px;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:8px;font:inherit;font-weight:700;cursor:pointer}
.editor{min-height:150px;border:1.5px solid var(--line);border-radius:10px;padding:12px;background:var(--surface);overflow:auto;max-height:340px}
.editor table{border-collapse:collapse} .editor td,.editor th{border:1px solid var(--line);padding:6px 10px}
.toast{position:fixed;left:50%;bottom:calc(var(--bot-h) + 18px + env(safe-area-inset-bottom,0px));transform:translate(-50%,30px);background:var(--ink);color:var(--bg);padding:12px 20px;border-radius:12px;font-weight:600;opacity:0;pointer-events:none;transition:.3s;z-index:120;max-width:90vw;text-align:center}
@media(min-width:900px){.toast{bottom:28px}}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Trợ lý ---------- */
.ask-grid{display:grid;gap:14px}
.qbtn{display:block;width:100%;text-align:left;font:inherit;padding:14px 16px;min-height:44px;border-radius:12px;background:var(--surface);border:1.5px solid var(--line);color:var(--ink);cursor:pointer;line-height:1.45;transition:border-color .2s,transform .2s}
.qbtn:hover{border-color:var(--son);transform:translateY(-2px)}
.qbtn small{display:block;color:var(--son);font-weight:700;font-size:12px;letter-spacing:.06em;margin-bottom:2px}
details.how{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:4px 18px}
details.how summary{cursor:pointer;font-weight:700;min-height:48px;display:flex;align-items:center}
details.how pre{white-space:pre-wrap;font-family:var(--f-body);font-size:14.5px;background:var(--code-bg);border:1px solid var(--line);border-radius:10px;padding:14px;margin:0 0 14px}
.tips{display:grid;gap:10px;counter-reset:t;padding:0;list-style:none;margin:0}
.tips li{counter-increment:t;display:flex;gap:12px;align-items:center;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:12px;font-weight:600}
.tips li::before{content:counter(t);flex:none;width:30px;height:30px;border-radius:50%;background:var(--son);color:var(--on-accent);display:grid;place-items:center;font-size:14px}

/* ---------- Di sản ---------- */
#map{height:min(62vh,520px);border-radius:18px;border:1px solid var(--line);z-index:1}
.vung-key{display:flex;gap:14px;flex-wrap:wrap;font-size:14px;font-weight:600}
.vung-key i{display:inline-block;width:12px;height:12px;border-radius:50%;margin-right:6px}
.site-card{padding:0;overflow:hidden;display:flex;flex-direction:column}
.site-card .cv{aspect-ratio:16/9;position:relative;color:#fff;display:grid;place-items:center}
.site-card .cv svg{position:absolute;inset:0;width:100%;height:100%;opacity:.3}
.site-card .cv .vg{position:absolute;left:12px;top:12px;font-size:12px;font-weight:700;background:rgba(0,0,0,.3);padding:3px 10px;border-radius:999px}
.site-card .cv img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.site-card .bd{padding:14px 16px 16px;display:grid;gap:8px;flex:1;align-content:start}
.site-card h4{margin:0}
.facts{display:grid;gap:8px;margin:0;padding:0;list-style:none}
.facts li{display:flex;gap:10px;font-size:15px} .facts b{min-width:100px;color:var(--muted);font-weight:600}
.detail-cv{aspect-ratio:21/9;min-height:160px;border-radius:20px;position:relative;overflow:hidden;display:grid;place-items:center;color:#fff;margin-bottom:20px}
.detail-cv svg{position:absolute;inset:0;width:100%;height:100%;opacity:.28}
.detail-cv img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.detail-cv b{position:relative;font-family:var(--f-display);font-size:clamp(28px,6vw,52px);text-align:center;padding:0 16px;text-shadow:0 2px 14px rgba(0,0,0,.35)}
.layout2{display:grid;gap:24px}
@media(min-width:900px){.layout2{grid-template-columns:minmax(0,1fr) 340px;align-items:start}}
.ailabel{border:2px dashed var(--lua);background:var(--lua-soft);border-radius:14px;padding:14px 16px;display:grid;gap:6px;font-size:15px}
.ailabel h4{margin:0;color:var(--lua-ink);font-size:17px}
.ailabel b{color:var(--lua-ink)}

/* ---------- Xưởng prompt ---------- */
.xp-grid{display:grid;gap:28px;align-items:start}
@media(min-width:900px){.xp-grid{grid-template-columns:minmax(0,1fr) minmax(0,440px)}}
.xp-steps{display:grid;gap:28px;min-width:0}
.xp-step{display:grid;gap:12px}
.xp-step h3{margin:0;display:flex;gap:10px;align-items:baseline;font-size:24px}
.xp-step h3 b{font-family:var(--f-body);font-size:13px;color:var(--son);letter-spacing:.06em}
.xp-chips{display:flex;flex-wrap:wrap;gap:8px}
.xchip{font:inherit;font-size:14.5px;font-weight:600;padding:10px 14px;min-height:46px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;text-align:left}
.xchip small{display:block;font-weight:400;color:var(--muted);font-size:12.5px}
.xchip[aria-pressed="true"]{border-color:var(--phusa);background:var(--phusa-soft)}
.xp-fields{display:grid;gap:14px}
.xfield{display:grid;gap:4px 16px;align-items:start}
@media(min-width:620px){.xfield{grid-template-columns:150px minmax(0,1fr)}}
.xfield>label{font-weight:700;font-size:14.5px;padding-top:8px}
.xfield>label span{display:block;font-weight:400;font-size:12.5px;color:var(--muted)}
.xp-shield{display:grid;gap:8px}
.xp-shield label{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;padding:10px 12px;background:var(--surface);border:1px solid var(--line);border-radius:10px;cursor:pointer}
.xp-shield input{margin-top:4px;accent-color:var(--phusa);width:18px;height:18px}
.xp-shield .lock{font-size:11px;font-weight:700;color:var(--phusa);text-transform:uppercase;letter-spacing:.08em;margin-left:auto;white-space:nowrap}
.warn{background:var(--lua-soft);color:var(--lua-ink);border-radius:12px;padding:12px 14px;font-size:14.5px;border-left:4px solid var(--lua)}
.warn b{display:block;margin-bottom:2px}
.xp-aside{position:sticky;top:calc(var(--nav-h) + 16px);display:grid;gap:14px;min-width:0}
@media(max-width:899px){.xp-aside{position:static}}
.out{background:var(--surface);border:1.5px solid var(--ink);border-radius:16px;padding:18px;display:grid;gap:12px}
.out h3{margin:0;font-size:22px}
.meter .bar{height:9px;border-radius:99px;background:var(--line);overflow:hidden}
.meter .bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--son),var(--lua),var(--phusa));transition:width .35s}
.meter p{margin:6px 0 0;font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:8px}
.meter p b{color:var(--ink)}
pre.pre{margin:0;white-space:pre-wrap;word-break:break-word;font-family:var(--f-body);font-size:14px;line-height:1.6;background:var(--code-bg);border:1px solid var(--line);border-radius:10px;padding:12px;max-height:46vh;overflow:auto}
.status{font-size:13.5px;color:var(--phusa);min-height:1.2em;margin:0;font-weight:600}
.after{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px;display:grid;gap:10px}
.after h3{margin:0;font-size:18px}
.after ul{margin:0;padding:0;list-style:none;display:grid;gap:6px;font-size:14.5px}
.after li label{display:flex;gap:10px;align-items:flex-start;cursor:pointer}
.after li input{margin-top:4px;accent-color:var(--phusa);width:18px;height:18px}

/* ---------- Giới thiệu ---------- */
.timeline{display:grid;gap:0;position:relative;padding-left:26px;border-left:3px solid var(--line);margin-left:8px}
@media(min-width:900px){.timeline{grid-template-columns:repeat(3,1fr);border-left:0;padding:26px 0 0;margin:0;gap:18px;border-top:3px solid var(--line)}}
.tl{position:relative;padding-bottom:22px}
.tl::before{content:"";position:absolute;left:-36px;top:4px;width:18px;height:18px;border-radius:50%;background:var(--c,var(--phusa));border:4px solid var(--bg)}
@media(min-width:900px){.tl::before{left:0;top:-36px}}
.tl h4{margin-bottom:6px}
.tl ul{margin:0;padding-left:18px;color:var(--muted)}
.toc-side{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.res-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:14px}
.res b{font-family:var(--f-display);font-size:38px;display:block;line-height:1}
.steps4{counter-reset:s;display:grid;gap:12px;padding:0;list-style:none;margin:0}
.steps4 li{counter-increment:s;display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start}
.steps4 li::before{content:counter(s);width:40px;height:40px;border-radius:12px;background:var(--lua);color:#201505;display:grid;place-items:center;font-family:var(--f-display);font-weight:800;font-size:22px}
.tool-row{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}
.tool-row div{padding:14px;border-radius:12px;background:var(--surface);border:1px solid var(--line);font-size:14.5px}
.tool-row b{display:block}

/* ---------- Giáo viên ---------- */
.stat-bars{display:grid;gap:8px}
.bar-row{display:grid;grid-template-columns:minmax(80px,170px) 1fr 38px;gap:10px;align-items:center;font-size:14px}
.bar-row .tr{height:14px;background:var(--line);border-radius:99px;overflow:hidden}
.bar-row .tr i{display:block;height:100%;background:var(--phusa);border-radius:99px}
.pend{display:grid;gap:10px;padding:16px;border:1px solid var(--line);border-radius:14px;background:var(--surface);margin-bottom:12px}

/* ---------- QR ---------- */
.qr-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr))}
.qr-item{text-align:center;padding:18px;border:1px solid var(--line);border-radius:16px;background:#fff;color:#111;break-inside:avoid}
.qr-item .qrbox{display:grid;place-items:center;margin-bottom:8px}
.qr-item b{display:block;font-family:var(--f-display);font-size:22px}
.qr-item small{color:#555}
.poster{background:#fff;color:#111;border:2px solid var(--ink);border-radius:18px;padding:30px;text-align:center;max-width:620px;margin:20px auto 0}
.poster h2{color:var(--son)}
.poster .tri{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:14px}
.poster .tri div{border-radius:14px;padding:14px 8px;border:3px solid var(--c)}
.poster .tri b{font-family:var(--f-display);font-size:26px;color:var(--c);display:block}
.poster .mascot{width:150px;margin:0 auto}

/* ---------- Chân trang ---------- */
.footer{background:#14201D;color:#C9D6D1;margin-top:40px;padding-block:40px 28px}
.footer a{color:#E8D9A8} .footer a:hover{color:#fff}
.footer .fg{display:grid;gap:26px}
@media(min-width:760px){.footer .fg{grid-template-columns:1.4fr 1fr 1fr}}
.footer h4{color:#fff;font-size:18px}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.footer .fine{margin-top:26px;padding-top:16px;border-top:1px solid #2C3C37;font-size:13.5px;color:#93A8A1}
.footer .logo{color:#fff}

/* ---------- Hiệu ứng ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}

/* ---------- In ---------- */
@media print{
  .topbar,.botnav,.footer,.noprint,.toast{display:none!important}
  body{background:#fff;padding:0}
  .qr-item,.poster{border-color:#999}
  .printpage-break{page-break-before:always}
}

/* ---------- Bổ sung responsive ---------- */
.layout2>*{min-width:0}
.facts li span{min-width:0;overflow-wrap:anywhere}
.poster .tri div{min-width:0;padding:10px 4px}
.poster .qrbox canvas,.poster .qrbox img,.qr-item .qrbox canvas,.qr-item .qrbox img{max-width:100%;height:auto!important}
@media(max-width:560px){.poster{padding:16px}.poster .tri{gap:8px}.poster .tri b{font-size:20px}}
.detail-cv{aspect-ratio:auto;width:100%;height:clamp(170px,30vw,300px);min-height:0}

/* ---------- Sách lật ---------- */
.fb{max-width:820px;margin-inline:auto}
.fb-stage{--ar:.708;position:relative;margin:0 auto;width:min(100%,calc((100vh - 230px) * var(--ar)));min-width:min(100%,300px);aspect-ratio:var(--ar);border-radius:6px 14px 14px 6px;background:#f7f1e3;
  box-shadow:0 1px 0 #fff inset,0 24px 40px -24px rgba(29,41,37,.55),0 0 0 1px var(--line),-7px 0 0 -2px #d9ccb0,-12px 0 0 -4px #c7b995;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.fb-stage::before{content:"";position:absolute;left:0;top:0;bottom:0;width:18px;z-index:6;pointer-events:none;border-radius:6px 0 0 6px;background:linear-gradient(90deg,rgba(0,0,0,.22),rgba(0,0,0,.05) 55%,transparent)}
.fb-book{position:absolute;inset:0;perspective:2400px;border-radius:inherit;overflow:hidden}
.fb-page{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;display:block;background:#f7f1e3;-webkit-user-drag:none}
.fb-cast{position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(0,0,0,.5),rgba(0,0,0,0) 70%);opacity:0;z-index:2}
.fb-leaf{position:absolute;inset:0;z-index:5;transform-origin:0 50%;will-change:transform,opacity;backface-visibility:hidden}
.fb-sh{position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(0,0,0,.45),rgba(0,0,0,.05) 60%,rgba(255,255,255,.18));opacity:0}
.fb-leaf.out{animation:leafOut .8s cubic-bezier(.5,.05,.3,1) forwards}
.fb-leaf.in{animation:leafIn .8s cubic-bezier(.3,.05,.5,1) forwards}
.fb-leaf.out .fb-sh,.fb-leaf.in .fb-sh{animation:shade .8s ease forwards}
.fb-leaf.in .fb-sh{animation-direction:reverse}
.fb-cast.out{animation:cast .8s ease forwards}.fb-cast.in{animation:cast .8s ease reverse forwards}
@keyframes leafOut{0%{transform:rotateY(0) skewY(0)}60%{opacity:1}100%{transform:rotateY(-112deg) skewY(-2deg);opacity:0}}
@keyframes leafIn{0%{transform:rotateY(-112deg) skewY(-2deg);opacity:0}40%{opacity:1}100%{transform:rotateY(0) skewY(0);opacity:1}}
@keyframes shade{0%{opacity:0}60%{opacity:1}100%{opacity:1}}
@keyframes cast{0%{opacity:.7}100%{opacity:0}}
.fb-edge{position:absolute;top:0;bottom:0;width:15%;z-index:7;border:0;background:transparent;color:#fff;cursor:pointer;display:grid;place-items:center;opacity:0;transition:opacity .2s;padding:0}
.fb-edge.l{left:0;background:linear-gradient(90deg,rgba(29,41,37,.35),transparent)}
.fb-edge.r{right:0;background:linear-gradient(270deg,rgba(29,41,37,.35),transparent)}
.fb-edge svg{width:30px;height:30px;filter:drop-shadow(0 1px 3px rgba(0,0,0,.6))}
.fb-stage:hover .fb-edge:not(:disabled),.fb-edge:focus-visible{opacity:1}
.fb-edge:disabled{display:none}
@media(hover:none){.fb-edge{display:none}}
.fb-prog{height:4px;border-radius:99px;background:var(--line);margin:18px auto 0;width:min(100%,360px);overflow:hidden}
.fb-prog i{display:block;height:100%;width:0;background:var(--son);transition:width .4s}
.fb-ctl{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:12px;flex-wrap:wrap}
.fb-pg{min-width:110px;text-align:center;font-weight:700;font-variant-numeric:tabular-nums}
.fb-ctl .iconbtn:disabled{opacity:.35;cursor:not-allowed}
.fb-ctl .iconbtn[aria-pressed="true"]{color:var(--son);border-color:var(--son)}
.fb-hint{text-align:center;font-size:13.5px;margin:10px 0 0}
.fb-thumbs{display:flex;gap:8px;overflow-x:auto;padding:12px 2px 6px;margin-top:6px;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}
.fb-thumbs button{position:relative;flex:0 0 auto;width:64px;aspect-ratio:.708;padding:0;border:2px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface);cursor:pointer;scroll-snap-align:center}
.fb-thumbs button img{width:100%;height:100%;object-fit:cover;object-position:top;display:block}
.fb-thumbs button span{position:absolute;right:3px;bottom:3px;background:rgba(29,41,37,.8);color:#fff;font-size:11px;font-weight:700;border-radius:6px;padding:0 5px;line-height:1.5}
.fb-thumbs button[aria-current="true"]{border-color:var(--son);box-shadow:0 0 0 2px var(--son)}
.fb-groups{justify-content:center}
.fb:fullscreen{background:#10181a;display:grid;align-content:center;justify-items:center;padding:18px;max-width:none;overflow:auto}
.fb:fullscreen .fb-stage{width:min(100%,calc((100vh - 170px) * var(--ar)))}
.fb:fullscreen .fb-ctl .iconbtn{background:#1b2422;color:#fff;border-color:#2f3d39}
.fb:fullscreen .fb-hint,.fb:fullscreen .fb-pg{color:#c9d6d1}
.modal .box.wide{max-width:min(1000px,96vw)}
.zm{max-height:76vh;overflow:auto;border-radius:12px;border:1px solid var(--line);background:#f7f1e3;-webkit-overflow-scrolling:touch}
.zm img{display:block;width:100%;height:auto;cursor:zoom-in}
.zm img.big{width:210%;max-width:none;cursor:zoom-out}
@media(prefers-reduced-motion:reduce){.fb-leaf,.fb-cast{animation:none!important}}
/* thẻ chủ đề có ảnh bìa từ trang đầu sách lật */
.cd-card .cv.photo{height:170px;background-size:cover;background-position:top center}
.cd-card .cv.photo::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 30%,rgba(0,0,0,.65))}
.cd-card .cv.photo b{position:relative;z-index:1;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.6)}
@media(max-width:430px){.fb-ctl{gap:6px;flex-wrap:nowrap}.fb-pg{min-width:84px;font-size:14px}.fb-ctl .iconbtn{width:42px;height:44px}}

/* ---------- Ngày này năm xưa ---------- */
.cal-grid{display:grid;gap:28px;align-items:start}
@media(min-width:860px){.cal-grid{grid-template-columns:minmax(0,340px) minmax(0,1fr)}.cal-left{position:sticky;top:calc(var(--nav-h) + 16px)}}
.bloc{position:relative;background:#FFFDF8;color:#1D2925;border-radius:6px 6px 14px 14px;padding:46px 22px 24px;text-align:center;border:1px solid #E5DCC6;
  box-shadow:0 2px 0 #fff inset,0 26px 36px -24px rgba(29,41,37,.6),0 7px 0 -3px #EFE6D0,0 13px 0 -6px #E3D8BE}
.bloc::before{content:"";position:absolute;left:0;right:0;top:0;height:34px;border-radius:6px 6px 0 0;background:linear-gradient(180deg,#B8342B,#A8241C)}
.bloc .rings{position:absolute;left:0;right:0;top:-10px;display:flex;justify-content:space-evenly;padding:0 16px;z-index:2}
.bloc .rings i{width:10px;height:20px;border-radius:6px;background:linear-gradient(90deg,#d8d8d8,#7a7a7a);box-shadow:0 2px 3px rgba(0,0,0,.35)}
.b-month{position:absolute;left:0;right:0;top:15px;color:#fff;font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:13px;z-index:1}
.b-day{font-family:var(--f-display);font-weight:800;font-size:clamp(110px,22vw,170px);line-height:.95;margin:2px 0 0;color:#A8241C;font-variant-numeric:tabular-nums}
.b-dow{margin:6px 0 14px;font-family:var(--f-display);font-size:28px;font-weight:700}
.b-lunar{border-top:1px dashed #cfc3a5;padding-top:14px;display:grid;gap:2px}
.b-lunar span{font-size:13px;color:#6b665a;letter-spacing:.08em;text-transform:uppercase}
.b-lunar b{font-family:var(--f-display);font-size:38px;line-height:1.05;color:#1F6B63}
.bloc.flip{animation:flipDay .55s cubic-bezier(.3,.7,.2,1);transform-origin:50% 0}
@keyframes flipDay{0%{transform:perspective(900px) rotateX(-70deg);opacity:.3}100%{transform:none;opacity:1}}
.cal-nav{display:flex;gap:8px;margin-top:20px;justify-content:center;flex-wrap:wrap}
.evlist{display:grid;gap:14px}
.ev{background:var(--surface);border:1px solid var(--line);border-left:6px solid var(--c,var(--phusa));border-radius:14px;padding:16px 18px;display:grid;gap:6px;box-shadow:var(--shadow)}
.ev.c-VN{--c:var(--son)}.ev.c-VL{--c:var(--lua)}.ev.c-LH{--c:var(--phusa)}.ev.c-TG{--c:#6B7B86}
.ev .meta{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.ev .yr{font-family:var(--f-display);font-weight:800;font-size:28px;line-height:1;color:var(--c)}
.ev .ago{font-size:13.5px;color:var(--muted)}
.ev .chip-c{margin-left:auto;font-size:12px;font-weight:700;padding:2px 10px;border-radius:999px;background:var(--bg);border:1px solid var(--line);color:var(--muted)}
.ev h3{margin:0;font-size:22px}.ev p{margin:0;color:var(--muted)}
.ev-ask{justify-self:start;margin-top:4px;display:inline-flex;gap:6px;align-items:center;min-height:40px;padding:4px 12px;border-radius:999px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;font-size:13.5px;font-weight:600;cursor:pointer}
.ev-ask svg{width:16px;height:16px}.ev-ask:hover{border-color:var(--son);color:var(--son)}
.upc{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.upc li{display:flex;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px 12px}
.upc .d{font-family:var(--f-display);font-weight:800;font-size:20px;min-width:64px;line-height:1.05}.upc .d small{display:block;font-family:var(--f-body);font-weight:500;font-size:12px;color:var(--muted)}
.upc button{border:0;background:none;font:inherit;font-weight:600;color:var(--ink);text-align:left;cursor:pointer;padding:6px 0;min-height:44px;flex:1}
.upc button:hover{color:var(--son)}
.today-card{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.today-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--son)}
.tc-date{display:grid;justify-items:center;background:#FFFDF8;color:#1D2925;border-radius:12px;padding:10px 18px 12px;min-width:104px;border:1px solid #E5DCC6}
.tc-date span{font-size:11.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--son)}
.tc-date b{font-family:var(--f-display);font-size:60px;line-height:1;font-weight:800;color:#A8241C}
.tc-date small{font-weight:600}.tc-date em{font-style:normal;font-size:12.5px;color:#1F6B63;font-weight:600;margin-top:2px}
.tc-ev{margin-bottom:10px}.tc-ev b{display:block;font-family:var(--f-display);font-size:21px;line-height:1.2}.tc-ev span{color:var(--muted);font-size:15px}
@media(max-width:560px){.today-card{grid-template-columns:1fr}.tc-date{grid-auto-flow:column;gap:10px;justify-content:start;align-items:baseline;padding:8px 14px}.tc-date b{font-size:44px}}

/* ---------- Đố vui ---------- */
.big-tabs{border-bottom:0;gap:10px;flex-wrap:wrap;overflow:visible}
.big-tabs button{border:2px solid var(--line);border-radius:14px;background:var(--surface);margin:0;padding:12px 18px;font-size:16px;color:var(--ink);display:inline-flex;gap:8px;align-items:center}
.big-tabs button svg{width:20px;height:20px}
.big-tabs button[aria-selected="true"]{border-color:var(--son);background:var(--son-soft);color:var(--son)}
.qz-tools{display:flex;gap:8px;justify-content:flex-end;margin-bottom:12px;flex-wrap:wrap}
.qz-seen{display:grid;gap:8px;margin-bottom:6px}
.qz-river{height:8px;border-radius:99px;background:var(--line);overflow:hidden}
.qz-river i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--phusa),var(--lua));transition:width .4s}
.qz-sets{display:grid;gap:10px}@media(min-width:640px){.qz-sets{grid-template-columns:1fr 1fr}}
.qz-set{text-align:left;font:inherit;padding:14px 16px;border-radius:14px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;display:grid;gap:2px;min-height:64px;transition:transform .15s,border-color .15s}
.qz-set:hover{transform:translateY(-2px);border-color:var(--phusa)}.qz-set b{font-family:var(--f-display);font-size:20px}.qz-set span{font-size:14px;color:var(--muted)}
.qz-stats{display:flex;gap:18px;flex-wrap:wrap;margin:10px 0;font-size:14.5px;color:var(--muted)}.qz-stats b{color:var(--ink);font-variant-numeric:tabular-nums}
.qz-q{font-size:clamp(22px,4vw,30px);margin:12px 0 18px}
.qz-opts{display:grid;gap:10px}
.qz-opt{display:flex;gap:12px;align-items:center;text-align:left;font:inherit;font-size:16.5px;padding:14px 16px;min-height:58px;border-radius:14px;border:2px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;transition:transform .15s,border-color .15s,background .15s}
.qz-opt:hover:not(:disabled){border-color:var(--phusa);transform:translateX(3px)}
.qz-opt .k{flex:none;width:34px;height:34px;border-radius:50%;background:var(--bg);display:grid;place-items:center;font-weight:700;border:1px solid var(--line)}
.qz-opt.ok{border-color:var(--phusa);background:var(--phusa-soft)}.qz-opt.ok .k{background:var(--phusa);color:var(--on-accent);border-color:var(--phusa)}
.qz-opt.no{border-color:var(--son);background:var(--son-soft)}.qz-opt.no .k{background:var(--son);color:var(--on-accent);border-color:var(--son)}
.qz-opt.dim{opacity:.55}.qz-opt.pop{animation:popA .4s}
@keyframes popA{40%{transform:scale(1.03)}}
.qz-fb{margin-top:16px;padding:14px 16px;border-radius:14px;display:grid;gap:4px}.qz-fb p{margin:0}.qz-fb .ans{font-weight:700}
.qz-fb.ok{background:var(--phusa-soft);border-left:5px solid var(--phusa)}.qz-fb.no{background:var(--son-soft);border-left:5px solid var(--son)}
.qz-score{font-family:var(--f-display);font-weight:800;font-size:64px;line-height:1;margin:0;color:var(--son)}.qz-rank{font-size:20px;font-weight:700;margin:6px 0 16px}
.qz-miss{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}.qz-miss li{padding:12px 14px;border-radius:12px;background:var(--bg);border:1px solid var(--line);display:grid;gap:3px}.qz-miss span{color:var(--muted);font-size:14.5px}
.burst{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:130}
.burst i{position:absolute;top:-12px;width:10px;height:16px;border-radius:2px;animation:fall 1.8s ease-in forwards}
@keyframes fall{to{transform:translateY(105vh) rotate(540deg);opacity:.9}}

/* ---------- Thám tử Sử ---------- */
.tt-top{display:grid;gap:16px}@media(min-width:760px){.tt-top{grid-template-columns:1.1fr .9fr}}
.tt-badge{display:inline-flex;align-items:center;gap:8px;width:fit-content;padding:6px 14px 6px 10px;border-radius:999px;font-weight:700;background:var(--bg);border:1.5px solid var(--line);color:var(--muted)}
.tt-badge svg{width:22px;height:22px}
.tt-badge.r1{background:var(--phusa-soft);border-color:var(--phusa);color:var(--phusa)}
.tt-badge.r2{background:var(--lua-soft);border-color:var(--lua);color:var(--lua-ink)}
.tt-badge.r3{background:var(--son);border-color:var(--son);color:var(--on-accent)}
.tt-score{margin:0;padding-left:22px;display:grid;gap:6px}.tt-score li{padding-left:4px}.tt-score li span{display:inline-block;min-width:90px;font-weight:600}.tt-score li b{color:var(--son)}
.tt-case{text-align:left;font:inherit;cursor:pointer;width:100%}
.tt-paper{background:#FFFDF8;color:#1D2925;border-color:#E5DCC6}
:root[data-theme="dark"] .tt-paper{background:#232a27;color:var(--ink);border-color:var(--line)}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .tt-paper{background:#232a27;color:var(--ink);border-color:var(--line)}}
.tt-paper .muted{color:inherit;opacity:.75}
.tt-text{font-size:17.5px;line-height:2}
.tt-s{font:inherit;color:inherit;text-align:left;background:transparent;border:0;border-bottom:2px dotted color-mix(in srgb,currentColor 45%,transparent);padding:2px 3px;margin:0;cursor:pointer;border-radius:4px;transition:background .15s}
.tt-s:hover:not(:disabled){background:var(--lua-soft)}
.tt-s[aria-pressed="true"]{background:var(--lua-soft);color:var(--lua-ink);border-bottom:2px solid var(--lua);box-shadow:0 0 0 2px var(--lua) inset}
.tt-s:disabled{cursor:default}
.tt-s.hit{background:var(--phusa-soft);color:var(--phusa);border-bottom:2px solid var(--phusa);box-shadow:none}
.tt-s.miss{background:var(--son-soft);color:var(--son);border-bottom:2px solid var(--son);box-shadow:none}
.tt-s.bad{background:var(--bg);text-decoration:line-through;box-shadow:none}
.tt-mark{padding:12px 14px;border-radius:12px;background:var(--bg);border:1px solid var(--line);margin-bottom:10px}
.tt-reslist{display:grid;gap:10px;margin-top:10px}
.tt-res{padding:12px 14px;border-radius:12px;border-left:5px solid}.tt-res.ok{background:var(--phusa-soft);border-color:var(--phusa)}.tt-res.no{background:var(--son-soft);border-color:var(--son)}

/* ---------- Hộ chiếu Di sản ---------- */
.hc-grid{display:grid;gap:22px;align-items:center}
@media(min-width:760px){.hc-grid{grid-template-columns:240px 1fr}}
.hc-cover{aspect-ratio:3/4;border-radius:8px 16px 16px 8px;background:radial-gradient(circle at 30% 20%,#C13A2F,#A8241C 55%,#7E1A14);color:#E8C76A;display:grid;justify-items:center;align-content:center;gap:6px;text-align:center;padding:20px;max-width:240px;
  box-shadow:inset 6px 0 0 rgba(0,0,0,.25),inset 0 0 0 5px rgba(232,199,106,.35),0 24px 32px -18px rgba(29,41,37,.7)}
.hc-emb{width:96px;height:96px}.hc-emb svg{width:100%;height:100%}
.hc-cover b{font-family:var(--f-display);font-size:30px;letter-spacing:.14em}.hc-cover span{font-weight:700;letter-spacing:.12em;font-size:14px}.hc-cover small{opacity:.8;letter-spacing:.2em;margin-top:10px}
.hc-page{background:#FFFDF6;color:#1D2925;border:1px solid #E5DCC6;border-radius:18px;padding:22px;position:relative;
  background-image:repeating-radial-gradient(circle at 20% 0%,rgba(31,107,99,.05) 0 2px,transparent 2px 9px),repeating-radial-gradient(circle at 90% 100%,rgba(168,36,28,.04) 0 2px,transparent 2px 11px)}
.hc-slots{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px}
.hc-slot{aspect-ratio:1;display:grid;place-items:center;border-radius:50%;border:2px dashed #CFC3A5;padding:10px;position:relative}
.hc-slot.on{border-color:transparent}
.hc-slot .stamp{width:100%;height:100%;display:block}
.hc-empty{display:grid;gap:6px;justify-items:center;text-align:center;padding:8px}
.hc-empty span{font-family:var(--f-display);font-weight:800;font-size:18px;line-height:1.1}
.hc-empty small{font-size:11.5px;color:#6b665a;line-height:1.25}
.hc-empty a{font-size:12.5px;color:#1F6B63}
.hc-slot.special.on{border:3px double #C08A1E;background:#FBF0D6}
.hc-special{display:grid;gap:4px;justify-items:center;text-align:center;color:#7A5208}.hc-special svg{width:34px;height:34px}.hc-special b{font-family:var(--f-display);font-size:18px;line-height:1.1}.hc-special small{font-size:11.5px}
.stamp.fresh{animation:stampIn .65s cubic-bezier(.2,.9,.3,1.2)}
@keyframes stampIn{0%{transform:scale(1.9) rotate(-18deg);opacity:0}55%{transform:scale(.94);opacity:1}100%{transform:scale(1)}}
.stamp-wrap{width:190px;margin:0 auto}
@media(prefers-reduced-motion:reduce){.stamp.fresh{animation:none}}

/* ---------- Dòng sông thời gian ---------- */
.river-ctl{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.river-ctl .ld{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:8px}
.river{position:relative;overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:20px;background:linear-gradient(180deg,var(--surface),color-mix(in srgb,var(--phusa-soft) 60%,var(--surface)));border:1px solid var(--line)}
.river-track{display:flex;align-items:center;min-width:max-content;height:390px;position:relative;padding:0 34px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='90' viewBox='0 0 240 90'%3E%3Cpath d='M0 45C60 15 180 75 240 45' fill='none' stroke='%236CC3B6' stroke-opacity='.5' stroke-width='30'/%3E%3Cpath d='M0 45C60 15 180 75 240 45' fill='none' stroke='%231F6B63' stroke-opacity='.55' stroke-width='3' stroke-dasharray='2 9' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:repeat-x;background-position:0 center;background-size:240px 90px;animation:riv 16s linear infinite}
@keyframes riv{to{background-position:-240px center}}
.bn{position:relative;flex:none;width:172px;height:100%}
.bn-dot{position:absolute;left:50%;top:50%;width:22px;height:22px;margin:-11px 0 0 -11px;border-radius:50%;background:var(--c);border:4px solid var(--surface);box-shadow:0 0 0 2px var(--c);z-index:2}
.bn-stem{position:absolute;left:50%;width:2px;margin-left:-1px;background:var(--c);opacity:.6}
.bn.up .bn-stem{bottom:calc(50% + 11px);height:30px}.bn.dn .bn-stem{top:calc(50% + 11px);height:30px}
.bn-card{position:absolute;left:8px;right:8px;display:grid;gap:2px;text-align:left;font:inherit;border:1.5px solid var(--c);background:var(--surface);color:var(--ink);border-radius:14px;padding:10px 12px;cursor:pointer;box-shadow:var(--shadow);transition:transform .2s}
.bn.up .bn-card{bottom:calc(50% + 40px)}.bn.dn .bn-card{top:calc(50% + 40px)}
.bn-card:hover{transform:translateY(-3px)}
.bn-card b{font-family:var(--f-display);font-size:24px;line-height:1;color:var(--c)}.bn-card span{font-size:13.5px;line-height:1.3;font-weight:600}
@media(max-width:700px){
  .river{overflow:visible;border:0;background:none}
  .river-track{display:block;min-width:0;height:auto;padding:6px 0 6px 0;background:none;animation:none}
  .river-track::before{content:"";position:absolute;left:19px;top:0;bottom:0;width:12px;border-radius:99px;background:linear-gradient(180deg,#6CC3B6,#1F6B63);opacity:.5}
  .bn{width:auto;height:auto;padding:6px 0 6px 52px}
  .bn-dot{left:25px;top:24px}.bn-stem{display:none}
  .bn.up .bn-card,.bn.dn .bn-card{position:static}
}
@media(prefers-reduced-motion:reduce){.river-track{animation:none}}
/* ---------- Bác sĩ lỗi sai ---------- */
.bs-card{display:grid;gap:8px;align-content:start}
.bs-q{margin:0;font-family:var(--f-display);font-weight:800;font-size:20px;line-height:1.25}
.bs-wr,.bs-ok{margin:0;padding:8px 12px;border-radius:10px;font-weight:600}
.bs-wr{background:var(--son-soft)}.bs-ok{background:var(--phusa-soft)}
.bs-wr span,.bs-ok span{display:block;font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;font-weight:700}
.bs-wr span{color:var(--son)}.bs-ok span{color:var(--phusa)}
.nghe{max-width:760px}.gdrive{width:100%;height:150px;border:0;border-radius:12px;background:var(--bg)}

/* ---------- Song ngữ Khmer + Xưa Nay ---------- */
.lang-tg{display:flex;gap:8px;margin:0 0 12px;flex-wrap:wrap}
.km,.km *{font-family:"Noto Sans Khmer","Be Vietnam Pro",sans-serif}
.km p{line-height:2;font-size:17px}.km h3{font-size:24px;line-height:1.6}
.km-note{font-family:var(--f-body)!important;line-height:1.6!important}
.cmp{--p:50%;position:relative;aspect-ratio:4/3;border-radius:16px;overflow:hidden;background:#222;border:1px solid var(--line);user-select:none;-webkit-user-select:none}
.cmp img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;-webkit-user-drag:none}
.cmp-a{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--p)) 0 0)}
.cmp-h{position:absolute;top:0;bottom:0;left:var(--p);width:3px;margin-left:-1.5px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.35);pointer-events:none}
.cmp-h i{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#fff;color:#1D2925;border-radius:99px;padding:4px 9px;font-style:normal;font-size:13px;font-weight:700;box-shadow:0 2px 8px rgba(0,0,0,.4)}
.cmp-l{position:absolute;top:10px;padding:2px 10px;border-radius:99px;background:rgba(0,0,0,.55);color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;pointer-events:none}
.cmp-l.l{left:10px}.cmp-l.r{right:10px}
.cmp-r{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;min-height:0}
.cmp:focus-within{outline:3px solid var(--son)}
.bigs.two{grid-template-columns:1fr}@media(min-width:760px){.bigs.two{grid-template-columns:repeat(2,1fr)}}
.mini-card{display:flex;gap:14px;align-items:center;padding:16px 18px}
.dd{position:relative}
.dd-t{display:inline-flex;align-items:center;gap:6px;padding:9px 14px;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:13.5px;letter-spacing:.1em;min-height:44px}
.dd-t .caret{width:11px;height:11px;transition:transform .2s}
.dd:hover .caret,.dd:focus-within .caret{transform:rotate(180deg)}
.dd-m{position:absolute;left:0;top:100%;min-width:250px;padding:8px;border-radius:14px;background:var(--surface);border:1px solid var(--line);box-shadow:0 24px 40px -20px rgba(29,41,37,.45);opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s;z-index:60}
.dd:hover .dd-m,.dd:focus-within .dd-m{opacity:1;visibility:visible;transform:none}
.dd-m a{display:block;padding:11px 14px;border-radius:10px;text-decoration:none;color:var(--ink);font-weight:600;min-height:44px}
.dd-m a:hover,.dd-m a:focus-visible{background:var(--bg)}
.g-son .dd-t:hover,.g-son .dd-t[aria-current="page"]{color:var(--son)}.g-phusa .dd-t:hover,.g-phusa .dd-t[aria-current="page"]{color:var(--phusa)}.g-lua .dd-t:hover,.g-lua .dd-t[aria-current="page"]{color:var(--lua-ink)}
.dd-t[aria-current="page"]{background:var(--bg)}
.navlinks a.plain{font-size:14.5px}
.sheet-h{margin:14px 12px 4px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--muted)}

/* Bé Sử */
.besu{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;padding:clamp(20px,3vw,32px);border-top:5px solid var(--son)}
.besu-l{display:flex;gap:20px;align-items:center}
.besu-m{width:110px;height:auto;flex:none}
.besu-btn{font-size:18px;min-height:56px;padding:0 28px}
.besu-q{display:grid;justify-items:center;gap:6px;text-align:center}
.besu-q #beQr{background:#fff;padding:8px;border-radius:12px;border:1px solid var(--line);line-height:0}
.besu-q small{color:var(--muted)}
@media(max-width:720px){.besu{grid-template-columns:1fr}.besu-l{flex-direction:column;text-align:center}.besu-q{display:none}}

.up-label{margin:16px 0 6px;font-weight:700;color:var(--lua-ink);font-size:14px;letter-spacing:.04em;text-transform:uppercase}
.qod{display:grid;gap:10px}.qod-o{display:grid;gap:8px}
.qod .qbtn.right{border-color:#2E7D4F;background:rgba(46,125,79,.14)}.qod .qbtn.wrong{border-color:var(--son);background:var(--son-soft)}.qod .qbtn.dim{opacity:.5}
.qod-f{padding:10px 12px;border-radius:10px;background:var(--bg);font-size:15px}
.tt-card{display:grid;align-content:start;gap:0;border-top:5px solid var(--lua)}
.tt-card .qod-o{display:grid;gap:8px}
.tt-card .qbtn.right,.qod .qbtn.right{border-color:#2E7D4F;background:rgba(46,125,79,.14)}.tt-card .qbtn.wrong{border-color:var(--son);background:var(--son-soft)}.tt-card .qbtn.dim{opacity:.5}
[hidden]{display:none!important}

.drop{position:relative;display:grid;place-items:center;min-height:84px;padding:14px;border:2px dashed var(--line);border-radius:14px;color:var(--muted);text-align:center;cursor:pointer;transition:border-color .2s,background .2s}
.drop.on,.drop:hover{border-color:var(--son);background:var(--son-soft)}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.flist{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:4px;font-size:14px}.flist button{border:0;background:none;font-size:18px;cursor:pointer;color:var(--son);min-width:32px;min-height:32px}
.prog{height:8px;border-radius:99px;background:var(--line);overflow:hidden;margin-top:8px}.prog i{display:block;height:100%;width:0;background:var(--son);transition:width .3s}
.mat-adm{display:inline-flex;gap:6px;margin-left:auto}.mat-card .typ{display:inline-flex;gap:6px;align-items:center}.mat-card .typ svg{width:16px;height:16px}
.mat-card .btns{align-items:center}