/* Chơi 1 biết 2 – choi1biet2.com */
:root{
  --bg:#F3F7FF; --paper:#FFFFFF; --ink:#15213D; --ink-2:#4A587A; --line:#DCE5F6; --soft:#E8EFFD;
  --sun:#FFC21A; --sun-deep:#E9A200; --sun-ink:#3A2A00;
  --red:#E2312B; --green:#1F9A55; --blue:#2453C2; --purple:#7446D6; --pink:#D9488F;
  --g1:#E9A200; --g2:#2453C2; --g3:#1F9A55; --g4:#7446D6; --g5:#E2312B; --g6:#D9488F;
  --tint:.12; --shadow:0 10px 30px -12px rgba(28,52,110,.28);
  --f-display:"Baloo 2","Nunito",system-ui,sans-serif;
  --f-body:"Nunito","Segoe UI",system-ui,sans-serif;
  --r:18px; --r-lg:28px; --wrap:1160px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0D1530; --paper:#152040; --ink:#EEF3FF; --ink-2:#A8B5D6; --line:#2A3964; --soft:#1B2850;
  --sun:#FFC933; --sun-deep:#FFB703; --sun-ink:#2A1E00;
  --red:#FF6A5F; --green:#3CCB7F; --blue:#6E9BFF; --purple:#A788FF; --pink:#FF7DBA;
  --g1:#FFB703; --g2:#6E9BFF; --g3:#3CCB7F; --g4:#A788FF; --g5:#FF6A5F; --g6:#FF7DBA;
  --tint:.18; --shadow:0 10px 30px -12px rgba(0,0,0,.6); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0D1530; --paper:#152040; --ink:#EEF3FF; --ink-2:#A8B5D6; --line:#2A3964; --soft:#1B2850;
  --sun:#FFC933; --sun-deep:#FFB703; --sun-ink:#2A1E00;
  --red:#FF6A5F; --green:#3CCB7F; --blue:#6E9BFF; --purple:#A788FF; --pink:#FF7DBA;
  --g1:#FFB703; --g2:#6E9BFF; --g3:#3CCB7F; --g4:#A788FF; --g5:#FF6A5F; --g6:#FF7DBA;
  --tint:.18; --shadow:0 10px 30px -12px rgba(0,0,0,.6); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--f-body);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue)}
h1,h2,h3,h4{font-family:var(--f-display);line-height:1.12;margin:0;text-wrap:balance;font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(2.3rem,5.4vw,4.1rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem)}
h3{font-size:1.3rem}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:20px}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:60ch}
.muted{color:var(--ink-2)}
.stack{display:grid;gap:14px}
.stack>*,.grid>*{min-width:0}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:8px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* Header */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:14px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none}
.brand img{width:46px;height:46px;object-fit:contain}
.brand b{font:800 1.2rem/1 var(--f-display)}
.brand small{display:block;font:700 .72rem/1.2 var(--f-body);color:var(--ink-2);letter-spacing:.02em}
.nav{display:flex;gap:2px;margin-left:auto;flex-wrap:wrap}
.nav a{padding:8px 12px;border-radius:999px;text-decoration:none;color:var(--ink);font-weight:700;font-size:.95rem}
.nav a:hover{background:var(--soft)}
.nav a[aria-current="page"]{background:var(--ink);color:var(--bg)}
.tools{display:flex;gap:8px;flex:none}
.icon-btn{display:inline-flex;align-items:center;gap:6px;height:42px;padding:0 14px;border-radius:999px;border:2px solid var(--line);background:var(--paper);color:var(--ink);font:800 .9rem var(--f-body);cursor:pointer}
.icon-btn svg{width:18px;height:18px}
.icon-btn[aria-pressed="true"]{background:var(--sun);border-color:var(--sun);color:var(--sun-ink)}
.badge-count{min-width:22px;height:22px;border-radius:99px;background:var(--sun);color:var(--sun-ink);display:inline-grid;place-items:center;font-size:.78rem}
.menu-btn{display:none}
@media (max-width:1020px){
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 16px 16px;flex-direction:column;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:12px 14px;font-size:1.05rem}
  .menu-btn{display:inline-flex}
  .tools{margin-left:auto}
  .brand small{display:none}
}
@media (max-width:480px){.icon-btn .lbl{display:none}.icon-btn{padding:0 11px}}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:52px;padding:0 24px;border-radius:999px;font:800 1.02rem var(--f-body);text-decoration:none;border:0;cursor:pointer}
.btn:active{transform:translateY(2px)}
.btn-sun{background:var(--sun);color:var(--sun-ink);box-shadow:0 6px 0 var(--sun-deep)}
.btn-ink{background:var(--ink);color:var(--bg)}
.btn-line{background:transparent;color:var(--ink);border:2px solid var(--ink)}
.btn-sm{min-height:42px;padding:0 18px;font-size:.92rem}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}

/* Sections */
main{display:block}
.page{padding-bottom:24px}
.sec{padding-block:56px}
.sec-head{display:grid;gap:10px;margin-bottom:28px}
.band{background:var(--paper);border-block:1px solid var(--line)}

/* Hero stage */
.hero{position:relative;overflow:hidden;padding-block:40px 0}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:end}
.hero-copy{padding-bottom:64px;display:grid;gap:20px;min-width:0}
.hero-copy h1 .one{color:var(--red)} .hero-copy h1 .two{color:var(--green)}
.stage{position:relative;min-height:440px;display:grid;place-items:end center}
.stage::before{content:"";position:absolute;inset:auto -10% -38% -10%;height:120%;border-radius:50%;background:radial-gradient(closest-side,var(--sun) 0 70%,var(--sun-deep) 71% 74%,transparent 75%)}
.stage .pair{position:relative;width:min(470px,92%);filter:drop-shadow(0 18px 18px rgba(30,40,80,.25))}
.stage .n1,.stage .n2{position:absolute;width:86px}
.stage .n1{left:-2%;top:34%;transform:rotate(-8deg)} .stage .n2{right:0;top:2%;width:100px;transform:rotate(6deg)}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr}.hero-copy{padding-bottom:8px}.stage{min-height:340px}}

/* Group chips & colors */
.gc-1{--gc:var(--g1)}.gc-2{--gc:var(--g2)}.gc-3{--gc:var(--g3)}.gc-4{--gc:var(--g4)}.gc-5{--gc:var(--g5)}.gc-6{--gc:var(--g6)}
.chip{justify-self:start;align-self:start;display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font:800 .8rem var(--f-body);background:color-mix(in srgb,var(--gc,var(--blue)) calc(var(--tint)*100%),transparent);color:var(--gc,var(--blue))}
.chip::before{content:"";width:8px;height:8px;border-radius:50%;background:currentColor}
/* Cards */
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(2,1fr)} .g3{grid-template-columns:repeat(3,1fr)} .g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px;display:grid;gap:10px;align-content:start;min-width:0}
.card h3{font-size:1.2rem}

/* Biết 2 */
.biet2{display:grid;grid-template-columns:auto 1fr;gap:12px 16px;align-items:center}
.biet2 img{width:46px}
.biet2 p{font:800 1.15rem/1.3 var(--f-display)}
.rules{display:grid;gap:10px}

/* Featured episode */
.feature{display:grid;grid-template-columns:1.1fr .9fr;gap:0;border-radius:var(--r);overflow:hidden;background:var(--paper);border:1px solid var(--line)}
.feature .art{background:color-mix(in srgb,var(--gc,var(--g5)) 16%,var(--paper));display:grid;place-items:end center;padding:24px 24px 0;position:relative;min-height:300px}
.feature .art img{max-height:400px;width:auto}
.feature .art .date{position:absolute;left:18px;top:18px;background:var(--ink);color:var(--bg);border-radius:14px;padding:8px 14px;font:800 1rem/1.1 var(--f-display);text-align:center}
.feature .body{padding:28px;display:grid;gap:16px;align-content:center}
@media (max-width:820px){.feature{grid-template-columns:1fr}.feature .art{min-height:0}.feature .art img{max-height:260px}}

/* Video cards */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.tab{min-height:42px;padding:0 16px;border-radius:999px;border:2px solid var(--line);background:var(--paper);color:var(--ink);font:800 .92rem var(--f-body);cursor:pointer}
.tab[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--bg)}
.vcard{display:grid;gap:10px;text-decoration:none;color:var(--ink)}
.thumb{position:relative;aspect-ratio:16/9;max-width:100%;border-radius:var(--r);overflow:hidden;background:color-mix(in srgb,var(--gc,var(--blue)) 18%,var(--paper));display:grid;place-items:end center}
.thumb img{position:absolute;bottom:0;left:50%;transform:translateX(-50%);height:92%;width:auto;max-width:none}
.thumb .play{position:absolute;left:14px;bottom:14px;width:52px;height:52px;border-radius:50%;background:var(--red);display:grid;place-items:center;box-shadow:0 6px 14px rgba(0,0,0,.25)}
.thumb .play::after{content:"";border-left:16px solid #fff;border-block:10px solid transparent;margin-left:4px}
.thumb .lbl{position:absolute;left:12px;top:12px}
.vcard h3{font-size:1.1rem}
.vframe{aspect-ratio:16/9;width:100%;border:0;border-radius:var(--r)}
.sched{display:grid;gap:10px}
.sched li{display:grid;grid-template-columns:70px 1fr auto;gap:14px;align-items:center;padding:12px 16px;border-radius:14px;background:var(--paper);border:1px solid var(--line)}
.sched .d{font:800 1.15rem var(--f-display);color:var(--red)}
.sched ul{margin:0;padding:0;list-style:none}
@media (max-width:620px){.sched li{grid-template-columns:60px 1fr}.sched li .chip{grid-column:2}}
ul.clean{list-style:none;margin:0;padding:0}

/* Characters */
.char{display:grid;grid-template-columns:240px 1fr;gap:32px;align-items:center;padding-block:8px}
.char+.char{border-top:1px solid var(--line);padding-top:32px}
.char.flip{grid-template-columns:1fr 240px}.char.flip .pic{order:2}
.char .pic{background:color-mix(in srgb,var(--cc) 14%,var(--paper));border-radius:var(--r);display:grid;place-items:end center;height:300px;padding-top:12px}
.char .pic img{max-height:290px;width:auto}
.char h3{font-size:2rem;color:var(--cc)}
.char h3 small{font:700 1rem var(--f-body);color:var(--ink-2);margin-left:6px}
.facts{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:.98rem}
.facts dt{font-weight:800;color:var(--ink-2)} .facts dd{margin:0}
@media (max-width:720px){.char,.char.flip{grid-template-columns:1fr}.char.flip .pic{order:0}.char .pic{height:260px}}

/* Play */
.play-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
@media (max-width:760px){.play-grid{grid-template-columns:1fr}}
.game{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;display:grid;gap:16px;align-content:start;min-width:0}
.game-head{display:flex;gap:14px;align-items:center}
.game-head img{width:64px;height:64px;object-fit:contain;border-radius:16px;background:var(--soft)}
.game-head .won{margin-left:auto}
.medal{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--soft);color:var(--ink-2);font-weight:800}
.medal.on{background:var(--sun);color:var(--sun-ink);box-shadow:0 3px 0 var(--sun-deep)}
.big{min-height:60px;padding:12px 18px;border-radius:18px;border:3px solid var(--line);background:var(--bg);color:var(--ink);font:800 1.08rem/1.3 var(--f-body);text-align:left;cursor:pointer;width:100%}
.big:hover{border-color:var(--blue)}
.big.ok{border-color:var(--green);background:color-mix(in srgb,var(--green) 14%,var(--paper))}
.big.no{border-color:var(--red);background:color-mix(in srgb,var(--red) 10%,var(--paper))}
.story{display:grid;gap:8px;counter-reset:s}
.story p{padding:12px 14px 12px 46px;border-radius:14px;background:var(--soft);position:relative;font-weight:600}
.story p::before{counter-increment:s;content:counter(s);position:absolute;left:12px;top:12px;width:24px;height:24px;border-radius:50%;background:var(--ink);color:var(--bg);display:grid;place-items:center;font:800 .8rem var(--f-body)}
.say{display:flex;gap:10px;align-items:center}
.listen{display:inline-flex;align-items:center;gap:6px;border:0;background:none;color:var(--blue);font:800 .9rem var(--f-body);cursor:pointer;padding:4px}
.feedback{padding:14px 16px;border-radius:14px;font-weight:700}
.feedback.ok{background:color-mix(in srgb,var(--green) 16%,var(--paper))} .feedback.no{background:color-mix(in srgb,var(--red) 12%,var(--paper))}
.riddle{display:grid;gap:14px;text-align:center;justify-items:center;padding:8px}
.riddle .q{font:800 1.35rem/1.35 var(--f-display);min-height:4.2em;display:grid;place-items:center}
.timer{width:86px;height:86px;border-radius:50%;display:grid;place-items:center;font:800 2rem var(--f-display);background:conic-gradient(var(--sun) var(--p,100%),var(--soft) 0)}
.timer span{width:68px;height:68px;border-radius:50%;background:var(--paper);display:grid;place-items:center}
.answer{font:800 1.3rem var(--f-display);color:var(--green)}
.faces{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.face{border:3px solid var(--line);border-radius:18px;background:var(--bg);padding:8px 4px;cursor:pointer;display:grid;gap:4px;justify-items:center;font:800 .95rem var(--f-body);color:var(--ink)}
.face svg{width:68px;height:68px}
.face.ok{border-color:var(--green)} .face.no{border-color:var(--red)}
@media (max-width:420px){.faces{grid-template-columns:repeat(2,1fr)}}
.cert{border-radius:22px;padding:28px;text-align:center;display:grid;gap:10px;justify-items:center;background:radial-gradient(circle at 50% 0,color-mix(in srgb,var(--sun) 35%,var(--paper)),var(--paper) 60%);border:4px double var(--sun-deep)}
.cert h3{font-size:2rem;color:var(--red)}
.cert .name{font:800 2.2rem/1.1 var(--f-display);color:var(--blue);border-bottom:3px dotted var(--line);padding:0 24px 6px;min-width:60%}
.cert img{width:110px}
.field{display:grid;gap:6px}
.field label{font-weight:800;font-size:.95rem}
.field input,.field select,.field textarea{width:100%;min-height:50px;padding:12px 14px;border-radius:14px;border:2px solid var(--line);background:var(--bg);color:var(--ink);font:600 1rem var(--f-body)}
.field textarea{min-height:120px;resize:vertical}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.95rem}
.check input{width:22px;height:22px;margin-top:2px;flex:none}
.note{padding:14px 16px;border-radius:14px;background:var(--soft);font-size:.95rem}
.note.ok{background:color-mix(in srgb,var(--green) 16%,var(--paper))}

/* Teaching kit */
.kit-hero{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.kit-hero .pic{background:var(--soft);border-radius:var(--r-lg);display:grid;place-items:end center;padding-top:16px;min-height:320px;position:relative;overflow:hidden}
.kit-hero .pic img{max-height:330px;width:auto}
@media (max-width:820px){.kit-hero{grid-template-columns:1fr}}
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.filters input{flex:1 1 220px;min-height:46px;padding:0 16px;border-radius:999px;border:2px solid var(--line);background:var(--paper);color:var(--ink);font:600 1rem var(--f-body)}
.lib{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:900px){.lib{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.lib{grid-template-columns:1fr}}
.item{display:grid;gap:6px;padding:16px;border-radius:16px;background:var(--paper);border:1px solid var(--line);border-left:6px solid var(--gc);min-width:0}
.item .code{font:700 .8rem ui-monospace,Menlo,Consolas,monospace;color:var(--ink-2);font-variant-numeric:tabular-nums}
.item b{font:800 1.1rem/1.2 var(--f-display)} .item span{font-size:.9rem;color:var(--ink-2)}
.item .ifoot{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:4px}
.item .open{font:800 .85rem var(--f-body);color:var(--gc);text-decoration:none}
.item .lock{font-size:.82rem;color:var(--ink-2)}
.more{margin-top:16px;display:flex;justify-content:center}
.count{font-weight:800;color:var(--ink-2);font-size:.95rem}
/* Pack detail */
.crumbs{font-size:.92rem;color:var(--ink-2);margin-bottom:14px}
.crumbs a{color:var(--ink-2)}
.pack-head{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:end}
.pack-meta{display:flex;gap:10px;flex-wrap:wrap}
.pack-meta span{padding:6px 12px;border-radius:12px;background:var(--soft);font-weight:700;font-size:.92rem}
.steps{counter-reset:st;display:grid;gap:8px;margin:0;padding:0;list-style:none}
.steps li{display:grid;grid-template-columns:36px 1fr auto;gap:12px;align-items:center;padding:10px 14px;border-radius:14px;background:var(--bg)}
.steps li::before{counter-increment:st;content:counter(st);width:32px;height:32px;border-radius:50%;background:var(--gc);color:#fff;display:grid;place-items:center;font-weight:800}
.steps li em{font-style:normal;font-weight:800;color:var(--ink-2);font-variant-numeric:tabular-nums}
@media (max-width:620px){.pack-head{grid-template-columns:1fr}}

/* Classroom screen */
.screen{position:fixed;inset:0;z-index:100;background:#0B1430;color:#fff;display:grid;grid-template-rows:auto 1fr auto}
.screen[hidden]{display:none}
.screen header,.screen footer{display:flex;align-items:center;gap:12px;padding:12px 20px;padding-top:calc(12px + env(safe-area-inset-top,0px))}
.screen footer{padding-bottom:calc(12px + env(safe-area-inset-bottom,0px))}
.screen header b{font:800 1.1rem var(--f-display)}
.screen .sbtn{min-height:48px;padding:0 18px;border-radius:999px;border:2px solid rgba(255,255,255,.3);background:transparent;color:#fff;font:800 1rem var(--f-body);cursor:pointer}
.screen .sbtn.primary{background:#FFC21A;border-color:#FFC21A;color:#2A1E00}
.screen .prog{flex:1;display:flex;gap:6px}
.screen .prog i{flex:1;height:6px;border-radius:9px;background:rgba(255,255,255,.2)}
.screen .prog i.on{background:#FFC21A}
.slide{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center;padding:20px clamp(16px,5vw,64px);overflow:auto}
.slide h2{font-size:clamp(2rem,4.6vw,3.6rem);color:#FFC21A}
.slide p,.slide li{font-size:clamp(1.1rem,2vw,1.6rem);line-height:1.45}
.slide .who{font:800 1rem var(--f-body);letter-spacing:.1em;text-transform:uppercase;color:#9FB4E8}
.slide .art{display:grid;place-items:center}
.slide .art img{max-height:58vh;width:auto}
.slide .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.slide .cards button{min-height:110px;border-radius:20px;border:3px solid rgba(255,255,255,.25);background:rgba(255,255,255,.06);color:#fff;font:800 clamp(1rem,1.8vw,1.4rem) var(--f-body);cursor:pointer;padding:10px}
.slide .cards button.on{background:#FFC21A;color:#2A1E00;border-color:#FFC21A}
.slide .cards button.bad{background:#E2312B;border-color:#E2312B}
.slide .cards button.good{background:#1F9A55;border-color:#1F9A55}
.slide .bigtimer{font:800 clamp(4rem,12vw,9rem)/1 var(--f-display);color:#FFC21A;font-variant-numeric:tabular-nums}
.teams{display:flex;gap:12px;flex-wrap:wrap}
.team{flex:1 1 120px;border-radius:20px;padding:14px;text-align:center;background:rgba(255,255,255,.08)}
.team b{display:block;font:800 3rem var(--f-display)}
.team .row{justify-content:center}
@media (max-width:760px){.slide{grid-template-columns:1fr}.slide .art img{max-height:30vh}.slide .cards{grid-template-columns:repeat(2,1fr)}}

/* Gate */
.gate{position:fixed;inset:0;z-index:120;background:rgba(10,18,40,.6);display:grid;place-items:center;padding:16px}
.gate[hidden]{display:none}
.gate .box{background:var(--paper);color:var(--ink);border-radius:var(--r-lg);padding:26px;max-width:420px;width:100%;display:grid;gap:14px}

/* Articles */
.article{max-width:720px;margin:0 auto;display:grid;gap:18px}
.article h2{margin-top:10px;font-size:1.5rem}
.article p{font-size:1.08rem}


/* Footer */
.foot{background:var(--ink);color:var(--bg);padding-block:44px 30px}
.foot a{color:var(--bg)}
.foot .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
.foot h4{font-size:1.05rem;margin-bottom:10px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot small{display:block;margin-top:28px;opacity:.75;font-size:.85rem}
.copybtn{border:0;background:var(--sun);color:var(--sun-ink);border-radius:99px;padding:2px 10px;font:800 .8rem var(--f-body);cursor:pointer;margin-left:6px}
@media (max-width:760px){.foot .cols{grid-template-columns:1fr}}
.demo-flag{background:var(--sun);color:var(--sun-ink);text-align:center;font:800 .85rem var(--f-body);padding:6px 12px}

/* Bố cục v2: ít khung, nhiều khoảng thở */
.small{font-size:.88rem}
.nowrap{white-space:nowrap}
.narrow{max-width:760px}
.wrap.narrow{max-width:800px}
.h-sm{font-size:1.45rem;margin-bottom:14px}
.link-strong{font-weight:800;color:var(--ink);text-decoration:underline;text-decoration-color:var(--sun);text-decoration-thickness:3px;text-underline-offset:5px}
.link-strong:hover{text-decoration-color:var(--red)}

.home-doors{display:grid;grid-template-columns:1.5fr 1fr;gap:20px;align-items:stretch}
.door-big{display:grid;grid-template-columns:1fr 190px;gap:16px;align-items:end;padding:30px 30px 0;border-radius:var(--r-lg);background:color-mix(in srgb,var(--sun) 30%,var(--paper));color:var(--ink);text-decoration:none;overflow:hidden}
.door-big .stack{padding-bottom:30px}
.door-big h2{font-size:clamp(1.6rem,3vw,2.2rem)}
.door-big img{width:190px;align-self:end}
.door-big:hover h2{text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:6px}
.door-side{display:grid;gap:12px;grid-auto-rows:1fr}
.door-small{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:var(--r);text-decoration:none;color:var(--ink);border:2px solid var(--line);background:var(--bg)}
.door-small img{width:64px;height:64px;object-fit:contain;flex:none}
.door-small b{display:block;font:800 1.2rem/1.2 var(--f-display)}
.door-small span{font-size:.95rem;color:var(--ink-2)}
.door-small span b{color:var(--ink)}
.door-small.d-blue b{color:var(--blue)} .door-small.d-red b{color:var(--red)}
.door-small:hover{border-color:var(--ink)}
@media (max-width:820px){.home-doors{grid-template-columns:1fr}.door-big{grid-template-columns:1fr 110px;padding:22px 20px 0}.door-big img{width:110px}.door-big .stack{padding-bottom:22px}}

.teacher-strip{display:grid;grid-template-columns:220px 1fr;gap:32px;align-items:center;max-width:960px}
.teacher-strip h2{font-size:clamp(1.5rem,2.6vw,2rem)}
@media (max-width:720px){.teacher-strip{grid-template-columns:1fr}.teacher-strip img{width:150px}}

ul.rows{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
ul.rows li{border-bottom:1px solid var(--line);display:flex;gap:14px;align-items:baseline}
ul.rows li>a{flex:1;display:flex;gap:14px;align-items:baseline;padding:16px 2px;color:var(--ink);text-decoration:none}
ul.rows.contents li{padding:14px 2px}
ul.rows li>a:hover b{text-decoration:underline}
ul.rows .t{flex:1;display:grid;gap:2px;min-width:0}
ul.rows .t b{font:800 1.12rem/1.3 var(--f-display)}
ul.rows .t .muted{font-size:.95rem}
ul.rows .dot{width:10px;height:10px;border-radius:50%;background:var(--gc);flex:none;transform:translateY(-2px)}
@media (max-width:560px){ul.rows a .nowrap{display:none}ul.rows.contents li{flex-direction:column;gap:2px}}

.levels{display:flex;gap:6px;margin-top:16px;flex-wrap:wrap}
.levels span{flex:1 1 110px;padding:10px 12px;border-left:4px solid var(--sun-deep);background:var(--paper);font-size:.9rem;color:var(--ink-2)}
.levels span.next{border-left-color:var(--line)}
.levels b{display:block;font:800 1.05rem var(--f-display);color:var(--ink)}

.plan-table{width:100%;border-collapse:collapse;font-size:.98rem}
.plan-table th,.plan-table td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.plan-table thead th{font:800 1.05rem var(--f-display);border-bottom:2px solid var(--ink)}
.plan-table tbody th{font-weight:700;color:var(--ink-2);width:34%}
@media (max-width:560px){.plan-table{font-size:.9rem}.plan-table th,.plan-table td{padding:10px 6px}}

.form-box{display:grid;gap:14px;padding:26px;border-radius:var(--r);background:var(--paper);border:1px solid var(--line)}
.partner-row{padding:20px 0;border-bottom:1px solid var(--line);display:grid;gap:6px}
.partner-row:first-child{border-top:1px solid var(--line)}
.partner-row h3{font-size:1.25rem}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding-top:28px;border-top:1px solid var(--line)}
@media (max-width:720px){.two-col{grid-template-columns:1fr;gap:28px}}
.crew-line{font:800 1.2rem var(--f-display);color:var(--blue)}
.song{display:grid;grid-template-columns:140px 1fr;gap:24px;align-items:center;padding:22px;border-radius:var(--r);background:color-mix(in srgb,var(--sun) 22%,var(--paper))}
@media (max-width:520px){.song{grid-template-columns:90px 1fr;gap:14px;padding:16px}}
.aside-note{margin-top:36px;padding:4px 0 4px 20px;border-left:4px solid var(--sun-deep);display:grid;gap:8px}
.vcard.more-link{align-content:center;justify-items:start;padding:20px;border:2px dashed var(--line);border-radius:var(--r);min-height:120px}
.vcard.more-link:hover{border-color:var(--ink)}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
.card>.btn,.plan>.btn,.stack>.btn{justify-self:start}
@media (max-width:620px){.screen .prog,#scFull{display:none}.screen header b{flex:1;font-size:1rem}}