@font-face{font-family:JCInter;src:url('/assets/fonts/inter-latin-variable.woff2') format('woff2');font-weight:100 900;font-display:swap}
.training-top button[data-leave-battle]{width:auto;height:auto;min-height:44px;white-space:nowrap;flex:0 0 auto;padding:10px 12px;font-size:.85rem}.training-top:has([data-leave-battle]){flex-wrap:wrap}
.c8-modal{width:min(1000px,calc(100vw - 20px));max-width:1000px}.c8-modal .modal-card{padding:clamp(14px,3vw,28px)}.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.spec-grid div{padding:16px;background:var(--paper);border-radius:16px}.spec-grid dt{color:var(--muted);font-size:.8rem}.spec-grid dd{margin:5px 0 0;font-weight:850}.colt-reference{margin:24px 0;line-height:1.65}.colt-reference a{color:var(--cyan-dark)}
:root{--navy:#071a2d;--navy-2:#102b45;--ink:#102133;--muted:#607286;--paper:#f3f7f9;--card:#fff;--olive:#687945;--olive-soft:#e9efd9;--cyan:#15d7df;--cyan-dark:#087582;--ice:#e9f7fa;--gold:#d9ae57;--red:#d95a50;--line:#dae5ea;--shadow:0 18px 50px rgba(11,31,47,.1);--radius:24px;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px)}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--paper);overflow-x:hidden}
body{margin:0;min-height:100vh;background:radial-gradient(circle at 96% 2%,rgba(21,215,223,.12),transparent 27rem),var(--paper);color:var(--ink);font-family:JCInter,Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;overflow-x:hidden}
button,a,input,select{font:inherit}
button,a{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.skip-link{position:fixed;left:12px;top:-60px;z-index:100;background:#fff;padding:12px 16px;border-radius:12px;font-weight:800}.skip-link:focus{top:12px}
.topbar{height:76px;position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;padding:10px clamp(14px,3vw,34px);background:rgba(7,26,45,.96);color:#fff;border-bottom:1px solid rgba(255,255,255,.12);backdrop-filter:blur(18px)}
.brand{display:flex;align-items:center;gap:11px;min-width:0}.brand img{width:48px;height:48px;border-radius:14px;box-shadow:0 8px 24px rgba(0,0,0,.25)}.brand span{display:flex;flex-direction:column;min-width:0}.brand b{font-size:1rem;letter-spacing:-.02em;white-space:nowrap}.brand small{margin-top:2px;color:#9ed5d9;font-size:.71rem;font-weight:750;letter-spacing:.08em;text-transform:uppercase}
.top-actions{display:flex;align-items:center;gap:9px}.streak-chip,.account-button{height:46px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.08);color:#fff;border-radius:15px;display:flex;align-items:center;justify-content:center}.streak-chip{gap:5px;padding:0 12px}.streak-chip span{color:var(--cyan)}.streak-chip b{font-size:.96rem}.streak-chip small{color:#9fb1c1;font-weight:700}.account-button{width:46px;font-weight:900;background:linear-gradient(135deg,var(--olive),#8da55e)}
.shell{width:min(1440px,100%);margin:0 auto;display:grid;grid-template-columns:210px minmax(0,1fr);gap:32px;padding:28px 34px 50px}
.nav{align-self:start;position:sticky;top:104px;display:grid;gap:7px}.nav a{min-height:50px;display:flex;align-items:center;gap:12px;padding:0 16px;border-radius:16px;color:#5e6c79;font-size:.91rem}.nav a span{width:26px;font-size:1.15rem;text-align:center}.nav a:hover{background:#e9eeeb}.nav a.active{background:var(--navy);color:#fff;box-shadow:0 10px 24px rgba(7,26,45,.15)}.nav a.active span{color:var(--cyan)}
main{min-width:0;width:100%}main:focus{outline:none}.page{width:min(1050px,100%);margin:0 auto;animation:page-in .22s ease}.page-head{margin-bottom:24px}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.72rem;font-weight:900;letter-spacing:.13em;text-transform:uppercase;color:var(--cyan-dark)}.eyebrow:before{content:"";width:20px;height:2px;background:currentColor}.page-head h1,.hero h1{margin:.42rem 0 .55rem;font-size:clamp(2rem,5vw,4rem);line-height:.98;letter-spacing:-.055em}.page-head p{margin:0;max-width:700px;color:var(--muted);font-size:1.02rem;line-height:1.65}
.hero{position:relative;overflow:hidden;min-height:390px;border-radius:34px;padding:clamp(26px,5vw,58px);display:grid;grid-template-columns:minmax(0,1.15fr) minmax(260px,.85fr);gap:30px;align-items:center;background:linear-gradient(135deg,#071a2d,#143b58);color:#fff;box-shadow:0 28px 70px rgba(7,26,45,.2)}.hero:before{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(21,215,223,.22);border-radius:50%;right:-110px;top:-170px;box-shadow:0 0 0 55px rgba(21,215,223,.035),0 0 0 110px rgba(21,215,223,.025)}.hero-copy,.hero-visual{position:relative;z-index:1}.hero h1 span{color:var(--cyan)}.hero p{margin:0 0 24px;max-width:610px;color:#c8d8e2;line-height:1.65}.hero-actions{display:flex;flex-wrap:wrap;gap:11px}.primary,.secondary,.ghost{min-height:48px;border:0;border-radius:15px;padding:0 18px;font-weight:850;display:inline-flex;align-items:center;justify-content:center;gap:8px}.primary{background:var(--cyan);color:#062a31;box-shadow:0 9px 24px rgba(21,215,223,.2)}.primary:hover{background:#46edf2}.secondary{background:var(--navy);color:#fff}.hero .secondary{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2)}.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.rank-stack{width:min(300px,85%);margin:auto;position:relative;aspect-ratio:1}.rank-stack:before,.rank-stack:after,.rank-stack-card{content:"";position:absolute;inset:9% 8%;border-radius:30px;background:#425031;border:2px solid rgba(217,174,87,.5);transform:rotate(-10deg);box-shadow:0 25px 40px rgba(0,0,0,.3)}.rank-stack:after{transform:rotate(8deg);background:#52643d}.rank-stack-card{display:grid;place-items:center;inset:8%;transform:none;background:linear-gradient(145deg,#64794a,#344327);color:#f2d188;font-size:5.2rem;font-weight:900}.rank-stack-card span{filter:drop-shadow(0 9px 8px rgba(0,0,0,.25))}.mastery-orbit{position:absolute;inset:-18px;border:10px solid transparent;border-top-color:var(--cyan);border-right-color:rgba(21,215,223,.45);border-radius:50%;transform:rotate(28deg)}
.metric-grid{margin:18px 0 28px;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.metric{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:0 8px 24px rgba(13,35,49,.05)}.metric strong{display:block;font-size:1.65rem;letter-spacing:-.04em}.metric span{color:var(--muted);font-size:.78rem;font-weight:750}.section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin:30px 0 14px}.section-title h2{margin:0;font-size:1.55rem;letter-spacing:-.035em}.section-title p{margin:0;color:var(--muted);font-size:.88rem}.section-title a{color:var(--cyan-dark);font-weight:850;font-size:.88rem}
.mission-grid,.mode-grid,.lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.feature-card,.mode-card,.lesson-card,.progress-card,.info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 30px rgba(11,31,47,.055)}.feature-card{padding:22px;min-height:190px;display:flex;flex-direction:column}.feature-icon,.mode-icon{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;background:var(--olive-soft);color:var(--olive);font-size:1.35rem;font-weight:900}.feature-card:nth-child(2) .feature-icon,.mode-card:nth-child(2n) .mode-icon{background:#dff8fa;color:#087a83}.feature-card:nth-child(3) .feature-icon{background:#faedd4;color:#9e6b16}.feature-card h3,.mode-card h3,.lesson-card h3{margin:18px 0 8px;font-size:1.08rem}.feature-card p,.mode-card p,.lesson-card p{margin:0;color:var(--muted);font-size:.88rem;line-height:1.55}.feature-card .card-link{margin-top:auto;padding-top:17px;font-size:.86rem;color:var(--cyan-dark);font-weight:850}
.mode-card{padding:20px;text-align:left;color:inherit;transition:.18s transform,.18s box-shadow}.mode-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.mode-card strong{display:inline-flex;margin-top:16px;color:var(--cyan-dark);font-size:.84rem}.mode-card[data-mode="blitz"]{background:linear-gradient(145deg,#132f49,#071a2d);color:#fff;border-color:#183e5e}.mode-card[data-mode="blitz"] p{color:#b9cad6}.mode-card[data-mode="blitz"] strong{color:var(--cyan)}
.filter-bar{display:flex;gap:8px;overflow:auto;padding:3px 2px 12px;scrollbar-width:none}.filter-bar::-webkit-scrollbar{display:none}.filter-chip{flex:0 0 auto;min-height:42px;border-radius:999px;padding:0 15px;border:1px solid var(--line);background:#fff;color:#596878;font-weight:800;font-size:.82rem}.filter-chip.active{background:var(--navy);border-color:var(--navy);color:#fff}.filter-chip.active:after{content:" ·";color:var(--cyan)}
.rank-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.rank-card{min-width:0;border:1px solid var(--line);background:#fff;border-radius:22px;overflow:hidden;text-align:left;color:inherit;transition:.18s transform}.rank-card:hover{transform:translateY(-2px)}.rank-image{height:178px;background:linear-gradient(155deg,#f3f5f1,#e1e7df);display:grid;place-items:center;padding:20px;position:relative}.rank-image img{max-height:138px;max-width:96%;object-fit:contain;filter:drop-shadow(0 10px 12px rgba(12,33,45,.12))}.rank-image .no-mark{display:grid;place-items:center;width:84px;height:84px;border:2px dashed #aeb9b1;border-radius:50%;color:#78847b;font-size:.72rem;text-align:center;font-weight:800}.rank-copy{padding:15px}.rank-copy small{display:block;color:var(--cyan-dark);font-weight:850;font-size:.68rem;letter-spacing:.06em;text-transform:uppercase;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.rank-copy b{display:block;margin-top:7px;font-size:.88rem;line-height:1.3}.rank-copy span{display:block;margin-top:5px;color:var(--muted);font-size:.75rem}
.training-shell{width:min(780px,100%);margin:0 auto}.training-top{display:flex;align-items:center;gap:12px;margin-bottom:20px}.training-top button{width:44px;height:44px;border:1px solid var(--line);border-radius:14px;background:#fff;font-size:1.2rem}.training-progress{height:9px;background:#dfe5e2;border-radius:999px;overflow:hidden;flex:1}.training-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--cyan-dark),var(--cyan));transition:.25s width}.training-counter{font-weight:850;color:#586879;font-size:.82rem;min-width:54px;text-align:right}.question-card{background:#fff;border:1px solid var(--line);border-radius:32px;padding:clamp(20px,4vw,38px);box-shadow:var(--shadow)}.question-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}.question-meta span{font-size:.72rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan-dark)}.question-meta time{font-weight:900;color:var(--red);font-variant-numeric:tabular-nums}.question-card h1{margin:12px 0 20px;font-size:clamp(1.45rem,4vw,2.25rem);line-height:1.12;letter-spacing:-.04em}.question-visual{height:260px;border-radius:24px;background:linear-gradient(155deg,#eef2ed,#dfe6df);display:grid;place-items:center;padding:22px;margin-bottom:18px;position:relative}.question-visual img{max-height:218px;max-width:95%;object-fit:contain;filter:drop-shadow(0 13px 13px rgba(9,32,46,.15))}.question-visual .word-card{font-size:clamp(1.7rem,6vw,3.4rem);font-weight:900;letter-spacing:-.055em;text-align:center}.answers{display:grid;grid-template-columns:1fr 1fr;gap:10px}.answer{min-height:62px;border:1px solid #d5ddda;border-radius:17px;background:#fff;text-align:left;padding:12px 15px;font-weight:800;color:var(--ink);display:flex;align-items:center;gap:10px}.answer:hover{border-color:#9fb0a7;background:#f7f9f7}.answer .letter{width:29px;height:29px;border-radius:9px;background:#edf1ef;color:#66736d;display:grid;place-items:center;flex:0 0 auto;font-size:.75rem}.answer.image-answer{min-height:145px;justify-content:center}.answer.image-answer img{max-height:110px;max-width:90%;object-fit:contain}.answer.correct{border-color:#55a96b;background:#e9f7eb;color:#276239}.answer.wrong{border-color:#d86459;background:#fff0ee;color:#982f26}.answer:disabled{cursor:default}.feedback{margin-top:14px;border-radius:17px;padding:15px 17px;background:#edf8f4;color:#285a48;line-height:1.45}.feedback.wrong{background:#fff0ee;color:#7e312c}.feedback b{display:block;margin-bottom:3px}.next-button{width:100%;margin-top:12px}
.result-card{text-align:center;background:#fff;border:1px solid var(--line);border-radius:32px;padding:clamp(28px,6vw,64px);box-shadow:var(--shadow)}.result-ring{width:145px;height:145px;margin:0 auto 22px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--cyan) var(--score,0%),#e3e9e6 0);position:relative}.result-ring:before{content:"";position:absolute;inset:12px;background:#fff;border-radius:50%}.result-ring strong{position:relative;font-size:2rem}.result-card h1{margin:0 0 9px;font-size:2rem}.result-card p{color:var(--muted)}.result-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:22px}
.colt-hero{overflow:hidden;border-radius:32px;padding:clamp(24px,5vw,48px);background:linear-gradient(135deg,#1a2b2d,#354b35);color:#fff;position:relative}.colt-hero:after{content:"S · R";position:absolute;right:5%;bottom:-12px;font-size:clamp(4rem,13vw,9rem);font-weight:950;color:rgba(255,255,255,.06);letter-spacing:-.08em}.colt-hero h1{margin:10px 0;font-size:clamp(2rem,5vw,3.6rem);letter-spacing:-.055em}.colt-hero p{max-width:700px;color:#d5dfd5;line-height:1.62}.safety-band{margin:16px 0 24px;padding:16px 18px;border-radius:18px;background:#fff7dd;border:1px solid #ebd79e;color:#735b19;display:flex;gap:13px;align-items:flex-start}.safety-band b{display:block;margin-bottom:3px}.safety-band span:first-child{font-size:1.4rem}.lesson-card{padding:21px;text-align:left;color:inherit}.lesson-number{display:flex;align-items:center;justify-content:space-between}.lesson-number span{width:34px;height:34px;border-radius:11px;background:var(--olive-soft);color:var(--olive);display:grid;place-items:center;font-weight:900}.lesson-number small{color:var(--muted);font-weight:750}.lesson-card.done{border-color:#aad2b2}.lesson-card.done .lesson-number span{background:#e1f5e6;color:#25703a}.lesson-card strong{display:inline-flex;margin-top:16px;color:var(--cyan-dark);font-size:.84rem}
.progress-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}.progress-card{padding:24px}.progress-card h2{margin:0 0 18px}.big-score{font-size:clamp(3rem,8vw,5.4rem);font-weight:950;letter-spacing:-.08em;line-height:1}.big-score small{font-size:1rem;letter-spacing:0;color:var(--muted)}.bar-list{display:grid;gap:13px}.bar-row{display:grid;gap:6px}.bar-label{display:flex;justify-content:space-between;font-size:.81rem;font-weight:800}.bar{height:10px;border-radius:999px;background:#e6ebe8;overflow:hidden}.bar span{height:100%;display:block;border-radius:inherit;background:linear-gradient(90deg,var(--olive),#92a766)}.weak-list{display:grid;gap:9px}.weak-item{display:flex;align-items:center;gap:12px;padding:10px;border-radius:14px;background:#f3f5f2}.weak-item img{width:48px;height:48px;object-fit:contain}.weak-item span{min-width:0}.weak-item b,.weak-item small{display:block}.weak-item small{color:var(--muted);margin-top:3px}.reset-button{color:#a63d36;border-color:#e6c3bf;margin-top:18px}
.modal{border:0;padding:0;background:transparent;width:min(680px,calc(100% - 24px));max-height:calc(100dvh - 24px)}.modal::backdrop{background:rgba(2,14,23,.65);backdrop-filter:blur(8px)}.modal-card{background:#fff;border-radius:28px;padding:24px;max-height:calc(100dvh - 24px);overflow:auto;box-shadow:0 30px 80px rgba(0,0,0,.3)}.modal-head{display:flex;align-items:start;justify-content:space-between;gap:14px}.modal-head h2{margin:5px 0 0;font-size:1.65rem;letter-spacing:-.04em}.close{width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:13px;font-size:1.25rem;flex:0 0 auto}.rank-detail-visual{min-height:230px;margin:20px 0;border-radius:22px;background:#eff3ef;display:grid;place-items:center;padding:24px}.rank-detail-visual img{max-height:190px;object-fit:contain}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.detail-box{padding:14px;border-radius:15px;background:#f3f5f2}.detail-box small,.detail-box b{display:block}.detail-box small{color:var(--muted);font-size:.72rem;margin-bottom:4px}.detail-note{color:var(--muted);line-height:1.6}.lesson-content{color:#3f4f5b;line-height:1.68}.lesson-content h3{color:var(--ink);margin:24px 0 7px}.lesson-content ul{padding-left:20px}.lesson-content li+li{margin-top:7px}.sequence{display:grid;gap:8px;counter-reset:step;margin-top:13px}.sequence li{list-style:none;counter-increment:step;padding:12px 13px 12px 48px;background:#f2f5f1;border-radius:14px;position:relative}.sequence li:before{content:counter(step);position:absolute;left:12px;top:10px;width:27px;height:27px;border-radius:9px;display:grid;place-items:center;background:var(--navy);color:#fff;font-weight:900;font-size:.75rem}.source-note{padding:13px;border-left:3px solid var(--cyan-dark);background:#eefafb;border-radius:0 12px 12px 0;font-size:.83rem;color:#47606a}.lesson-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:22px}.toast{position:fixed;left:50%;bottom:calc(86px + var(--safe-bottom));z-index:80;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#0b2438;color:#fff;border-radius:14px;padding:12px 17px;font-size:.86rem;font-weight:750;box-shadow:0 14px 38px rgba(0,0,0,.25);transition:.2s}.toast.show{opacity:1;transform:translate(-50%,0)}
.empty{padding:44px;text-align:center;background:#fff;border:1px dashed #cbd4cf;border-radius:24px;color:var(--muted)}
@keyframes page-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media(max-width:950px){.shell{grid-template-columns:1fr;padding:22px 18px 110px}.nav{position:fixed;z-index:50;left:10px;right:10px;bottom:calc(10px + var(--safe-bottom));top:auto;display:grid;grid-template-columns:repeat(6,1fr);gap:3px;padding:6px;background:rgba(7,26,45,.94);border:1px solid rgba(255,255,255,.1);border-radius:22px;box-shadow:0 16px 50px rgba(0,0,0,.28);backdrop-filter:blur(18px)}.nav a{min-height:58px;padding:5px 2px;gap:2px;flex-direction:column;justify-content:center;color:#aebdca;border-radius:16px;font-size:.64rem}.nav a span{width:auto;font-size:1.05rem}.nav a.active{background:rgba(255,255,255,.11);box-shadow:none}.hero{grid-template-columns:1fr}.hero-visual{display:none}.mission-grid,.mode-grid,.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.rank-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.progress-layout{grid-template-columns:1fr}}
@media(max-width:620px){.topbar{height:68px;padding:8px 12px}.brand img{width:43px;height:43px}.brand b{font-size:.91rem}.brand small{font-size:.61rem}.streak-chip{height:43px;padding:0 9px}.streak-chip small{display:none}.account-button{width:43px;height:43px}.shell{padding:16px 12px 105px}.hero{min-height:350px;border-radius:27px;padding:26px 21px}.hero h1{font-size:2.35rem}.hero p{font-size:.91rem}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions a{width:100%}.metric-grid{grid-template-columns:repeat(2,1fr)}.metric{padding:15px}.metric strong{font-size:1.42rem}.section-title{align-items:start}.section-title p{display:none}.mission-grid,.mode-grid,.lesson-grid{grid-template-columns:1fr}.feature-card{min-height:170px}.rank-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.rank-image{height:145px;padding:14px}.rank-image img{max-height:112px}.rank-copy{padding:12px}.rank-copy b{font-size:.79rem}.answers{grid-template-columns:1fr}.question-card{border-radius:25px;padding:18px}.question-visual{height:215px;padding:15px}.question-visual img{max-height:185px}.answer{min-height:57px}.answer.image-answer{min-height:125px}.modal{width:calc(100% - 16px);max-height:calc(100dvh - 16px)}.modal-card{padding:18px;border-radius:23px;max-height:calc(100dvh - 16px)}.detail-grid{grid-template-columns:1fr}.colt-hero{border-radius:27px;padding:26px 20px}.page-head h1{font-size:2.25rem}.filter-bar{margin-right:-12px;padding-right:18px}.toast{max-width:calc(100% - 30px);width:max-content;text-align:center}.nav a b{font-size:.61rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}
.branch-clue{height:100%;display:grid;grid-template-rows:minmax(0,1fr) auto;place-items:center;gap:8px;text-align:center}.branch-clue img{min-height:0}.branch-clue b{font-size:1rem}

/* Shared interaction and layout safeguards. */
html{scroll-padding-top:96px}
body{min-height:100dvh;-webkit-text-size-adjust:100%}
button,input,select,textarea{touch-action:manipulation}
button{line-height:1.4}
button:disabled{cursor:default}
button:disabled:not(.answer){opacity:.55}
button,a,input,select,textarea{outline-offset:4px}
:where(button,a,input,select,textarea,[tabindex]):focus-visible{outline:3px solid var(--cyan-dark);box-shadow:0 0 0 2px #fff}
.topbar :focus-visible,.nav :focus-visible,.hero :focus-visible,.music-card :focus-visible{outline-color:var(--cyan)}
::selection{background:#a7edf0;color:var(--navy)}
[hidden]{display:none!important}
.shell{padding-bottom:calc(50px + var(--safe-bottom))}
.topbar{height:calc(76px + var(--safe-top));padding-top:calc(10px + var(--safe-top))}
.page-head h1,.hero h1,.colt-hero h1,.section-title h2,.modal-head h2{overflow-wrap:break-word;text-wrap:balance}
.page-head p,.hero p,.feature-card p,.mode-card p,.lesson-card p{max-width:68ch}
.hero .eyebrow{color:#83e8ed}
.metric,.feature-card,.mode-card,.lesson-card,.progress-card,.detail-box,.info-card{min-width:0}
.metric strong,.training-counter,.big-score,.bar-label b{font-variant-numeric:tabular-nums}
.metric span{display:block;line-height:1.45;overflow-wrap:anywhere}
.progress-card .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.progress-card .metric{padding:13px;box-shadow:none;background:#f7fafb}
.section-title a{min-height:44px;display:inline-flex;align-items:center;flex:0 0 auto}
.feature-card h3,.mode-card h3,.lesson-card h3,.rank-copy b,.detail-box b,.weak-item b{overflow-wrap:anywhere}
.filter-chip,.close{min-width:44px;min-height:44px}
.weak-item{border:1px solid transparent;color:var(--ink);text-align:left}
button.weak-item{min-height:68px;width:100%}
.weak-item img{flex:0 0 48px}
.weak-item small{line-height:1.5;overflow-wrap:anywhere}
.bar-label{gap:12px;line-height:1.4}
.bar-label span{min-width:0}
.bar-label b{flex:0 0 auto}
.question-meta span{line-height:1.55;overflow-wrap:anywhere}
.question-meta time{flex:0 0 auto}
.answer>span:not(.letter){min-width:0;overflow-wrap:anywhere}
.answer:disabled:not(.correct):not(.wrong){color:#63717e;background:#f7f9fa}
.answer.correct .letter{background:#c9eacf;color:#245e35}
.answer.wrong .letter{background:#f6d2cc;color:#902c25}
.question-visual .no-mark,.rank-detail-visual .no-mark,.flash-card .no-mark{display:grid;place-items:center;min-width:105px;min-height:105px;padding:14px;border:2px dashed #aebfc4;border-radius:22px;color:#596e79;text-align:center;font-size:.85rem;font-weight:800;line-height:1.45}
.modal{overflow:visible}
.modal-card{overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#c5d4dc transparent}
.modal-head{position:relative}
.close{width:44px;height:44px}
.empty{padding:clamp(22px,5vw,44px);line-height:1.6;overflow-wrap:anywhere}
.result-card p,.detail-note,.source-note{line-height:1.65;overflow-wrap:anywhere}
.primary,.secondary,.ghost{padding-top:10px;padding-bottom:10px;text-align:center}
.primary,.secondary,.ghost,.filter-chip,.rank-card,.lesson-card,.answer{transition:background-color .16s,border-color .16s,box-shadow .16s,transform .16s}

/* Daily routine: one clear target and a quiet seven-day rhythm. */
.daily-panel{margin:18px 0 24px;padding:22px 24px;border:1px solid #cce6ec;border-radius:var(--radius);background:linear-gradient(120deg,#fff 20%,#e9f7fa);box-shadow:0 10px 30px rgba(11,31,47,.045)}
.daily-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.daily-heading>div{min-width:0}
.daily-heading h2,.daily-heading h3{margin:0 0 5px;font-size:1.15rem;letter-spacing:-.025em}
.daily-heading p{margin:0;color:var(--muted);font-size:.86rem;line-height:1.55}
.daily-heading>strong,.daily-heading>b{flex:0 0 auto;padding:9px 12px;border-radius:13px;background:#d9f4f5;color:#076875;font-size:.9rem;font-variant-numeric:tabular-nums}
.daily-track{display:grid;gap:8px;font-size:.8rem;color:var(--muted);line-height:1.5}
.daily-track .bar{height:9px;background:#d7e8ed}
.daily-track .bar span{background:linear-gradient(90deg,#0b8090,var(--cyan));transition:width .25s ease}
.daily-track.bar{display:block;height:9px;background:#d7e8ed}
.daily-track.bar>span{background:linear-gradient(90deg,#0b8090,var(--cyan));transition:width .25s ease}
.week-strip{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px;margin-top:17px}
.day-dot{min-width:0;display:grid;place-items:center;gap:4px;padding:9px 3px;border:1px solid #e0eaee;border-radius:13px;background:rgba(255,255,255,.8);color:var(--muted);font-size:.7rem;font-weight:750;text-align:center;line-height:1.3}
.day-dot b,.day-dot strong{font-size:.92rem;color:#6f8794}
.day-dot.done{border-color:#a8e4e8;background:#dff5f6;color:#086d78}
.day-dot.done b,.day-dot.done strong{color:#086d78}
.day-dot.today{border-color:var(--cyan-dark);box-shadow:inset 0 0 0 1px var(--cyan-dark)}

/* Inputs stay usable at mobile zoom and keyboard focus. */
.study-controls{display:flex;align-items:end;flex-wrap:wrap;gap:12px;margin:16px 0 22px;padding:16px;border:1px solid var(--line);border-radius:20px;background:rgba(255,255,255,.85)}
.study-controls label{flex:1 1 180px;min-width:0;display:grid;gap:7px;color:#43596b;font-size:.77rem;font-weight:850;line-height:1.4}
.study-controls input,.study-controls select,.rank-search input{width:100%;min-width:0;min-height:46px;border:1px solid #cadbe3;border-radius:12px;background:#fff;color:var(--ink);padding:10px 12px;font-size:1rem;line-height:1.4}
.study-controls select{padding-right:30px;cursor:pointer}
.study-controls input:focus,.study-controls select:focus,.rank-search input:focus{border-color:var(--cyan-dark)}
.rank-search{display:block;position:relative;margin:0 0 14px;color:var(--muted);font-size:.8rem;font-weight:800;line-height:1.5}
.rank-search input{min-height:50px;margin-top:7px;border-radius:16px;padding:12px 16px;font-weight:500;box-shadow:0 4px 14px rgba(11,31,47,.025)}
.rank-search input::placeholder{color:#728696;opacity:1}
.rank-search label,.rank-search>span{display:block;margin:0 0 7px;color:var(--muted);font-size:.8rem;font-weight:750}

/* Flash cards use rendered faces, so hidden-state ownership stays in the app. */
.flash-card{display:grid;place-items:center;width:100%;min-height:360px;padding:26px;border:1px solid #d4e5e9;border-radius:28px;background:linear-gradient(150deg,#fff 10%,#ecf7f9);color:var(--ink);text-align:center;box-shadow:0 14px 36px rgba(11,31,47,.07)}
.flash-front,.flash-back{width:100%;display:grid;justify-items:center;align-content:center;gap:16px;min-width:0}
.flash-card img{max-width:min(260px,92%);max-height:220px;object-fit:contain;filter:drop-shadow(0 12px 13px rgba(11,31,47,.12))}
.flash-card .question-visual{width:100%;margin:0;background:transparent}
.flash-card strong,.flash-card h2{margin:0;max-width:24ch;font-size:clamp(1.55rem,4vw,2.3rem);font-weight:900;letter-spacing:-.04em;line-height:1.15;overflow-wrap:anywhere}
.flash-card b{font-size:1.12rem;line-height:1.35}
.flash-card p{max-width:42ch;margin:0;color:var(--muted);line-height:1.65;font-size:.92rem}
.flash-card small{color:var(--cyan-dark);font-size:.78rem;font-weight:800;line-height:1.5}
.flash-card.revealed,.flash-card.is-flipped{border-color:#80d7de;background:linear-gradient(145deg,#fff,#dff4f6)}
.flash-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:15px}
.flash-actions>*{flex:1 1 170px;min-width:0;min-height:50px}
.rank-neighbours{display:grid;grid-template-columns:repeat(auto-fit,minmax(0,1fr));gap:10px;margin:15px 0}
.rank-neighbours>.rank-card{width:100%}
.rank-neighbours .rank-image{height:132px;padding:12px}
.rank-neighbours .rank-image img{max-height:106px}
.rank-neighbours .rank-copy{padding:12px}
.rank-neighbours .rank-copy b{font-size:.8rem}

/* A distinct, deliberately calm leisure panel. */
.music-card{position:relative;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:20px;overflow:hidden;margin:24px 0 0;padding:26px;border:1px solid #21455e;border-radius:var(--radius);background:radial-gradient(ellipse at 95% 0,rgba(21,215,223,.15),transparent 65%),linear-gradient(130deg,#071a2d,#12344d);color:#fff;box-shadow:0 14px 36px rgba(7,26,45,.11)}
.music-card>div{flex:1 1 260px;min-width:0}
.music-card .eyebrow{color:#84e8ed}
.music-card h2,.music-card h3{margin:7px 0 8px;font-size:1.45rem;letter-spacing:-.035em;line-height:1.2}
.music-card p{margin:0;max-width:58ch;color:#c2d9e3;font-size:.88rem;line-height:1.65}
.music-card>button,.music-card>a{flex:0 1 auto}
.music-card .ghost{border-color:#517087;color:#e8f7fb}
.music-frame{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden;margin:20px 0 15px;border-radius:19px;background:#071a2d;border:1px solid #d4e3e8}
.music-frame iframe{position:absolute;inset:0;display:block;width:100%;height:100%;border:0}
.music-links{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}
.music-links a{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 13px;border:1px solid var(--line);border-radius:12px;background:#f4fafb;color:var(--cyan-dark);font-size:.8rem;font-weight:800;line-height:1.4}

/* Results, review and earned milestones. */
.exam-summary{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;margin:22px 0;text-align:center}
.exam-summary>div{min-width:0;padding:16px 12px;border:1px solid var(--line);border-radius:17px;background:#f3f8fa}
.exam-summary strong,.exam-summary b{display:block;font-size:1.5rem;letter-spacing:-.035em;font-variant-numeric:tabular-nums}
.exam-summary small,.exam-summary span{display:block;margin-top:4px;color:var(--muted);font-size:.77rem;line-height:1.45}
.review-list{display:grid;gap:10px;margin:18px 0;text-align:left}
.review-row{display:flex;align-items:center;gap:13px;min-width:0;padding:14px;border:1px solid var(--line);border-radius:16px;background:#f8fafb;text-align:left;color:var(--ink)}
.review-row img{width:48px;height:58px;object-fit:contain;flex:0 0 48px}
.review-row>div,.review-row>span{min-width:0;flex:1}
.review-row b,.review-row strong{display:block;font-size:.87rem;line-height:1.45;overflow-wrap:anywhere}
.review-row small,.review-row p{display:block;margin:4px 0 0;color:var(--muted);font-size:.78rem;line-height:1.55;overflow-wrap:anywhere}
.review-row.correct{border-color:#bcdcc5;background:#f0f8f2}
.review-row.wrong{border-color:#ecd0cb;background:#fff6f3}
.badge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px;margin-top:16px}
.achievement{position:relative;min-width:0;padding:20px 16px;border:1px solid var(--line);border-radius:19px;background:#f0f4f6;color:#677d8c;text-align:center}
.achievement>span{display:grid;place-items:center;width:42px;height:42px;margin:0 auto 11px;border-radius:14px;background:#e2e9ed;color:#7a8e9b;font-size:1.3rem}
.achievement strong{display:block;font-size:.88rem;line-height:1.35;overflow-wrap:anywhere}
.achievement small{display:block;margin-top:6px;font-size:.73rem;line-height:1.55}
.achievement.earned{border-color:#a8dde3;background:linear-gradient(145deg,#fff,#e5f7f8);color:#126874}
.achievement.earned>span{background:#c9f1f1;color:#087581}
.session-history{display:grid;gap:0;margin-top:12px}
.history-row{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:0;padding:14px 0;border-bottom:1px solid #e3ecf0;font-size:.85rem;line-height:1.45}
.history-row:last-child{border-bottom:0;padding-bottom:0}
.history-row>div,.history-row>span{min-width:0}
.history-row b,.history-row strong{display:block;overflow-wrap:anywhere}
.history-row small{display:block;margin-top:4px;color:var(--muted);font-size:.75rem}
.history-row>strong,.history-row>b{flex:0 0 auto;font-size:.88rem;color:var(--cyan-dark);font-variant-numeric:tabular-nums}

/* Live room: readable join code, participant state and compact actions. */
.battle-card{min-width:0;margin:18px 0;padding:25px;border:1px solid #c6e1e8;border-radius:var(--radius);background:linear-gradient(145deg,#fff 40%,#edf9fb);box-shadow:0 12px 32px rgba(11,31,47,.06)}
.battle-card h2,.battle-card h3{margin:0 0 9px;letter-spacing:-.035em;line-height:1.2;overflow-wrap:anywhere}
.battle-card p{margin:8px 0 16px;color:var(--muted);line-height:1.6;font-size:.9rem}
.battle-card input,.battle-card select{min-width:0;max-width:100%;min-height:46px;padding:10px 13px;border:1px solid #bdd6e0;border-radius:12px;background:#fff;color:var(--ink);font-size:1rem}
.battle-card form{display:flex;align-items:end;flex-wrap:wrap;gap:10px}
.battle-card form>label{display:grid;gap:7px;flex:1 1 180px;min-width:0;color:var(--muted);font-size:.8rem;font-weight:800}
.battle-code{display:inline-block;max-width:100%;margin:10px 0 16px;padding:13px 17px;border:1px solid #b1dce3;border-radius:15px;background:#e4f7f9;color:var(--navy);font-size:clamp(1.5rem,5vw,2.2rem);font-weight:900;font-variant-numeric:tabular-nums;letter-spacing:.16em;line-height:1.25;overflow-wrap:anywhere;user-select:all}
.battle-players{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin:17px 0}
.battle-player{display:flex;align-items:center;justify-content:space-between;gap:12px;min-width:0;padding:13px 14px;border:1px solid #d7e5ea;border-radius:15px;background:#fff;color:var(--ink);font-size:.85rem;line-height:1.4}
.battle-player>div,.battle-player>span{min-width:0}
.battle-player b,.battle-player strong{overflow-wrap:anywhere}
.battle-player small{display:block;margin-top:3px;color:var(--muted);font-size:.73rem}
.battle-player.answered{border-color:#a7dce0;background:#e8f8f9}
.battle-player.answered small{color:#087582}
.battle-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:17px}
.battle-actions>*{min-width:0;min-height:46px}
.battle-score{flex:0 0 auto;color:var(--cyan-dark);font-size:1.45rem;font-weight:900;font-variant-numeric:tabular-nums;letter-spacing:-.035em;line-height:1.1}
.battle-score small{font-size:.7rem;letter-spacing:0;font-weight:700}

@media(hover:hover){
  .lesson-card:hover,.rank-card:hover{border-color:#a6c9d2;box-shadow:0 12px 30px rgba(11,31,47,.09)}
  .secondary:hover{background:#173e59}.ghost:hover{background:#eaf3f6;border-color:#adc8d2}
  .hero .secondary:hover{background:rgba(255,255,255,.18)}
  .flash-card:hover{border-color:#87cbd5;box-shadow:0 18px 42px rgba(11,31,47,.1)}
  .music-links a:hover{background:#e4f6f8;border-color:#acdce3}
}
@media(max-width:950px){
  .shell{padding-bottom:calc(110px + var(--safe-bottom))}
  .nav{max-width:680px;margin-inline:auto}
  .nav a{min-width:0}
  .hero{min-height:340px}
  .daily-panel{padding:20px}
}
@media(max-width:620px){
  html{scroll-padding-top:84px}
  .topbar{height:calc(68px + var(--safe-top));padding-top:calc(8px + var(--safe-top))}
  .streak-chip,.account-button{min-width:44px;min-height:44px}
  .shell{padding-bottom:calc(106px + var(--safe-bottom))}
  .page-head{margin-bottom:20px}.page-head p{font-size:.93rem;line-height:1.6}
  .hero{min-height:0;padding:24px 21px}.hero h1{font-size:clamp(2.1rem,8.5vw,2.65rem);line-height:1.03}.hero p{margin-bottom:20px}
  .hero-actions{gap:9px}.hero-actions>*{width:100%}
  .metric-grid{gap:9px;margin:13px 0 22px}.metric{border-radius:17px;padding:13px}
  .metric span{font-size:.68rem;letter-spacing:.015em}
  .section-title{gap:12px;margin:25px 0 12px}.section-title h2{font-size:1.35rem}
  .feature-card{min-height:156px;padding:19px}.mode-card,.lesson-card{padding:19px}
  .feature-card h3,.mode-card h3,.lesson-card h3{margin-top:14px}
  .progress-card{padding:19px}.progress-card h2{font-size:1.18rem;margin-bottom:15px}
  .question-card{padding:17px}.question-card h1{line-height:1.17}
  .question-visual{height:205px;border-radius:19px}.question-visual img{max-height:173px}
  .answer{min-height:59px;padding:12px;font-size:.9rem}
  .training-top{gap:10px;margin-bottom:14px}
  .daily-panel{margin:14px 0 21px;padding:18px 16px;border-radius:21px}
  .daily-heading{gap:11px;flex-wrap:wrap;margin-bottom:13px}.daily-heading h2,.daily-heading h3{font-size:1.06rem}
  .daily-heading>div{flex:1 1 160px}.daily-heading>button{flex:1 1 150px;min-height:44px;font-size:.83rem}
  .daily-heading p{font-size:.79rem}.daily-heading>strong,.daily-heading>b{padding:8px 9px;font-size:.82rem}
  .week-strip{gap:5px;margin-top:14px}.day-dot{padding:8px 2px;border-radius:10px;font-size:.61rem}
  .study-controls{gap:11px;padding:14px;border-radius:18px}.study-controls label{flex-basis:140px}
  .rank-search input{font-size:1rem}
  .flash-card{min-height:330px;padding:22px 17px;border-radius:24px}.flash-card img{max-height:195px}
  .flash-actions{gap:9px}.flash-actions>*{flex-basis:120px;padding-inline:12px;font-size:.88rem}
  .rank-neighbours{gap:7px}.rank-neighbours .rank-image{height:112px;padding:10px}.rank-neighbours .rank-image img{max-height:90px}
  .rank-neighbours .rank-copy{padding:10px}.rank-neighbours .rank-copy small{font-size:.59rem}.rank-neighbours .rank-copy b{font-size:.74rem}
  .music-card{padding:22px 20px;gap:17px;border-radius:22px}.music-card h2,.music-card h3{font-size:1.3rem}
  .music-card>button,.music-card>a{width:100%}.music-links a{flex:1 1 140px}
  .music-frame{border-radius:15px;margin-top:17px}
  .exam-summary{gap:8px;grid-template-columns:repeat(auto-fit,minmax(90px,1fr))}.exam-summary>div{padding:13px 8px}
  .review-row{padding:12px;gap:10px}.review-row img{width:40px;flex-basis:40px;height:50px}
  .badge-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.achievement{padding:16px 12px}
  .history-row{gap:10px;font-size:.81rem}
  .battle-card{padding:19px;border-radius:21px}.battle-players{grid-template-columns:1fr;gap:8px}
  .battle-actions>*{flex:1 1 135px}.battle-code{font-size:1.65rem;letter-spacing:.12em;padding:12px 14px}
  .battle-card form>button{flex:1 1 135px}.battle-card form>input{width:100%}
  .result-card{padding:26px 18px}.result-card h1{font-size:1.65rem}.result-actions>*{flex:1 1 160px}
  .modal-card{padding-bottom:calc(18px + var(--safe-bottom))}
}
@media(max-width:360px){
  .top-actions{gap:6px}.brand{gap:8px}.brand b{font-size:.83rem}.brand small{font-size:.56rem}
  .nav{left:6px;right:6px;padding:5px;gap:1px}.nav a b{font-size:.56rem}
  .daily-heading{align-items:flex-start}.daily-heading>strong,.daily-heading>b{max-width:100px;text-align:center}
  .week-strip{gap:3px}.day-dot{font-size:.58rem}
  .rank-neighbours .rank-copy{padding:8px}.rank-neighbours .rank-copy b{font-size:.68rem}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}
  .mode-card:hover,.rank-card:hover{transform:none}
}
@media(forced-colors:active){
  .bar,.training-progress,.result-ring{border:1px solid CanvasText}
  .day-dot.today,.day-dot.done,.achievement.earned,.answer.correct,.answer.wrong,.battle-player.answered{outline:2px solid CanvasText;outline-offset:-3px}
  :focus-visible{outline:3px solid Highlight!important}
}
.scenario-scene{position:relative;min-height:245px;display:flex;align-items:flex-end;justify-content:space-between;gap:30px;padding:80px 25px 36px;margin:16px 0 24px;border-radius:22px;overflow:hidden;background:linear-gradient(180deg,#e5f2f0 0 78%,#c9d8cd 78%);border:1px solid var(--line)}
.scene-person{position:relative;display:grid;place-items:center;width:78px;height:96px;border-radius:30px 30px 12px 12px;background:var(--olive);color:white;font-size:28px;font-weight:900;animation:scene-breathe 3s ease-in-out infinite}
.scene-person:before{content:'';position:absolute;top:-38px;left:21px;width:36px;height:39px;background:#b7cbc5;border-radius:50%}.scene-person.instructor{background:var(--navy);animation-delay:.8s}
.scene-speech{position:absolute;top:16px;left:16px;max-width:calc(100% - 32px);margin:0;padding:12px 18px;background:white;border-radius:16px 16px 16px 2px;font-weight:750;box-shadow:0 6px 18px #071a2d12;animation:page-in .35s ease}
.scene-label{position:absolute;bottom:10px;left:0;right:0;text-align:center;font-size:11px;color:#304e40}.scenario-scene.resolved{background:linear-gradient(180deg,#d8f5ef 0 78%,#b4d3be 78%)}.resolved .scene-speech{color:#087654}
@keyframes scene-breathe{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
@media(prefers-reduced-motion:reduce){.scene-person,.scene-speech{animation:none}}