:root{color-scheme:dark;--navy:#0b1026;--ivory:#f4e7b2;--gold:#e8b95b;--red:#b84038;--jade:#75a99a;--text:#f7f2e8;--muted:#b4b8c8;--line:rgba(244,231,178,.2)}*{box-sizing:border-box}body{margin:0;background:var(--navy);color:var(--text);font-family:system-ui,-apple-system,'Noto Sans TC','Microsoft JhengHei',sans-serif;font-size:16px;line-height:1.6}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.4}button,a,input{touch-action:manipulation}button:focus-visible,input:focus-visible{outline:3px solid var(--ivory);outline-offset:4px}button{color:inherit}button,input{min-height:48px}button{transition:transform .18s,border-color .2s,background .2s}button:active{transform:scale(.98)}.night{position:fixed;inset:0;background:linear-gradient(180deg,rgba(11,16,38,.1),rgba(11,16,38,.4) 45%,#0b1026 100%),url('night.webp') center 28%/cover no-repeat;z-index:-3;animation:moonrise 1.8s ease-out both}.cloud{position:fixed;pointer-events:none;width:75vw;height:17vh;top:18%;left:-20%;background:radial-gradient(ellipse,rgba(190,198,213,.06),transparent 65%);filter:blur(16px);z-index:-2;animation:drift 35s ease-in-out infinite alternate}.cloud-two{top:38%;left:40%;animation-duration:49s;opacity:.5}.stars{position:fixed;top:12%;left:8%;width:80%;color:#f4e7b255;letter-spacing:2vw;pointer-events:none;animation:star 7s ease-in-out infinite alternate;z-index:-1}.mast{display:flex;align-items:center;justify-content:space-between;padding:26px 5vw;border-bottom:1px solid #ffffff0d}.brand{font-size:22px;letter-spacing:.18em;font-weight:700;color:var(--ivory)}.brand small{font-size:12px;letter-spacing:.22em;color:var(--muted);display:block;font-weight:400}.edition{font-size:12px;letter-spacing:.18em;color:var(--muted)}.entry{max-width:1140px;margin:auto;min-height:calc(100svh - 106px);display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:center;padding:60px 36px 80px}.hero{animation:rise .8s .15s both}.eyebrow{font-size:12px;letter-spacing:.24em;color:var(--gold);font-weight:600}.hero h1{font-family:'Noto Serif TC','Songti TC','PMingLiU',serif;font-size:clamp(40px,5.5vw,68px);font-weight:500;line-height:1.45;letter-spacing:.08em;margin:18px 0 22px;text-shadow:0 2px 24px #0b1026}.hero h1 span{color:var(--ivory)}.hero p{color:#dadbdc;font-size:17px;letter-spacing:.06em}.ornament{display:flex;gap:16px;align-items:center;margin-top:48px;color:var(--gold);font-size:13px;letter-spacing:.18em}.ornament:before{content:'';width:42px;height:1px;background:var(--gold)}.entry-panel{padding:32px;background:linear-gradient(150deg,#182137eb,#10172aec);border:1px solid #f4e7b22b;border-radius:20px;backdrop-filter:blur(16px);box-shadow:0 25px 60px #0003;animation:rise .8s .25s both}.panel-heading{display:flex;justify-content:space-between;align-items:center}.panel-heading h2{font-size:20px;margin:0}.badge{font-size:12px;border:1px solid #75a99a60;color:#a3cbbf;padding:3px 9px;border-radius:5px}.score-rules{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:24px 0 12px}.rule{border:1px solid var(--line);border-radius:10px;padding:14px 12px;font-size:14px}.rule strong{font-size:25px;display:block;color:var(--ivory);font-weight:500}.rule.pro{border-color:#e8b95b55}.rule.pro strong{color:var(--gold)}.fine{font-size:12px;color:var(--muted)}.brief{font-size:14px;color:#c6cad4;padding:0;list-style:none;margin:20px 0}.brief li{margin:7px 0;display:flex;gap:10px}.brief li:before{content:'·';color:var(--gold)}label{display:block;font-size:14px;margin:20px 0 8px}input{width:100%;border:1px solid #8c92a350;border-radius:10px;background:#0b1026a8;color:var(--text);padding:14px 16px}input::placeholder{color:#969daf}.primary{width:100%;background:var(--gold);border:1px solid var(--gold);color:#241e12;font-weight:700;border-radius:10px;padding:14px 20px;box-shadow:0 4px 18px #e8b95b12}.entry-panel .primary{margin-top:15px}.privacy{font-size:12px;color:var(--muted);line-height:1.7;margin:14px 0 0;text-align:center}.entry-foot{position:absolute;bottom:16px;left:0;right:0;text-align:center;font-size:12px;color:#8e96ad;letter-spacing:.12em}.topbar{position:sticky;top:0;z-index:5;background:#0b1026ef;backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}.top-inner{max-width:850px;margin:auto;padding:16px 24px 10px}.top-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.arena-brand{font-weight:600;color:var(--ivory);letter-spacing:.04em}.student{font-size:12px;color:var(--muted);max-width:210px;overflow-wrap:anywhere}.timer{font-variant-numeric:tabular-nums;font-size:28px;font-weight:500;color:var(--ivory);letter-spacing:.05em;transition:color 1s,transform .2s}.timer.gold{color:var(--gold)}.timer.red{color:#ff9c90;animation:pulse 2s infinite}.timer.last{transform:scale(1.08)}.progress-row{display:flex;align-items:center;justify-content:space-between;margin-top:12px;gap:8px}.lantern-nav{display:flex;gap:2px;flex:1;max-width:570px}.lantern{position:relative;border:0;background:none;color:#697184;min-height:44px;min-width:0;flex:1;padding:5px 1px;display:flex;align-items:center;justify-content:center;transition:color .4s,filter .4s}.lantern svg{width:22px;height:29px;fill:transparent;stroke:currentColor;stroke-width:1.4;transition:fill .4s}.lantern.lit{color:var(--gold);filter:drop-shadow(0 0 5px #e8b95b55)}.lantern.lit svg{fill:#b8403855}.lantern.current:after{content:'';position:absolute;bottom:0;width:4px;height:4px;border-radius:50%;background:var(--ivory)}.progress-text{white-space:nowrap;font-size:12px;color:var(--muted)}.quiz-shell{max-width:780px;margin:0 auto;padding:30px 24px 120px}.chapter{display:flex;justify-content:space-between;font-size:12px;letter-spacing:.1em;color:var(--muted);margin-bottom:18px}.question{position:relative;overflow:hidden;border:1px solid #f4e7b239;border-radius:18px;background:linear-gradient(140deg,#1a243bdc,#10182eea);padding:30px;animation:rise .3s ease-out}.question.pro{border-color:#e8b95b88;animation:glow .55s ease-out}.question.pro:before{content:'';position:absolute;pointer-events:none;inset:0;background:linear-gradient(100deg,transparent 20%,#e8b95b13 50%,transparent 70%);transform:translateX(100%);animation:sweep .55s ease-out}.q-meta{display:flex;justify-content:space-between;align-items:center;gap:10px;color:var(--ivory);font-size:13px;letter-spacing:.06em}.pro .q-meta{color:var(--gold)}.points{padding:3px 10px;border:1px solid var(--line);border-radius:6px;white-space:nowrap}.question h2{font-size:25px;font-weight:500;line-height:1.8;letter-spacing:.04em;margin:26px 0 8px;white-space:pre-line}.hint{color:var(--muted);font-size:14px;margin:0 0 25px}.choices{display:grid;gap:12px}.choice{text-align:left;width:100%;display:flex;align-items:center;gap:16px;padding:14px 16px;background:#0b102650;border:1px solid #ffffff20;border-radius:10px;min-height:61px}.choice .letter{color:#a9afc0;font-size:13px}.choice.selected{border-color:var(--gold);background:#e8b95b12;transform:translateY(-2px)}.choice.selected .letter{color:var(--gold)}.chosen{margin-left:auto;color:var(--gold);font-size:12px;white-space:nowrap}.answer-status{font-size:12px;color:var(--jade);min-height:24px;margin:12px 0 0}.question-controls{display:flex;justify-content:space-between;gap:14px;margin-top:22px}.secondary{border:1px solid #ffffff2a;background:#10182ed9;border-radius:9px;padding:11px 18px}.question-controls button{min-width:110px}.question-controls .next{color:var(--ivory);border-color:#e8b95b70}.bottom-bar{position:fixed;bottom:0;left:0;right:0;z-index:4;background:#0b1026f5;border-top:1px solid var(--line);padding:14px 24px max(14px,env(safe-area-inset-bottom))}.bottom-inner{display:flex;gap:14px;max-width:732px;margin:auto}.bottom-inner .secondary{flex:1;white-space:nowrap}.bottom-inner .primary{flex:1.5}.pair-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:14px;position:relative}.pair-column{display:grid;gap:12px}.pair{position:relative;min-height:75px;text-align:left;border:1px solid #ffffff30;background:#0b102660;border-radius:10px;padding:10px;font-size:14px}.pair.active{outline:2px solid var(--ivory);outline-offset:2px}.pair.matched{border-color:var(--pair);background:color-mix(in srgb,var(--pair) 12%,#0b1026)}.pair-code{font-size:12px;color:var(--pair,var(--muted));display:block}.pair.flash:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,#e8b95b44,transparent);animation:sweep .5s;pointer-events:none}.pair-line{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}.pair-line line{stroke:var(--gold);stroke-width:2;stroke-dasharray:200;animation:draw .5s both}.result-page{min-height:100svh;display:flex;align-items:center;justify-content:center;padding:20px}.result-card{width:100%;max-width:400px;padding:26px 25px 20px;background:linear-gradient(160deg,#1b263cef,#0d152bef);border:1px solid #e8b95b80;border-radius:22px;text-align:center;box-shadow:0 15px 80px #0005,0 0 60px #f4e7b20a;position:relative;overflow:hidden;animation:rise .6s}.result-brand{font-size:17px;letter-spacing:.06em;color:var(--ivory)}.complete{font-size:11px;letter-spacing:.2em;color:var(--gold);margin-top:8px}.result-name{font-size:25px;font-weight:600;margin:16px 0 0;overflow-wrap:anywhere;line-height:1.4}.big-score{font-size:94px;line-height:1.1;font-weight:400;letter-spacing:-.06em;color:var(--ivory);font-variant-numeric:tabular-nums;margin-top:7px}.points-caption{font-size:11px;letter-spacing:.3em;color:var(--gold)}.result-title{display:inline-block;margin:18px 0 20px;padding:6px 15px;border:1px solid #e8b95b44;border-radius:30px;color:var(--ivory);font-size:16px;background:#e8b95b0c}.stats{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;gap:16px}.stat small{display:block;color:var(--muted);font-size:12px}.stat strong{font-size:21px;font-weight:500}.stat strong span{color:#969eb2;font-size:14px}.stat:nth-child(odd){border-right:1px solid var(--line)}.result-year{font-size:12px;margin:17px 0 5px;color:var(--muted)}.result-code{font-size:12px;letter-spacing:.17em;color:var(--gold)}.capture-note{margin-top:16px;background:#f4e7b20a;border-radius:9px;padding:11px;font-size:14px;line-height:1.7;color:var(--ivory)}.capture-note strong{font-weight:500}.particle{position:absolute;pointer-events:none;width:3px;height:3px;background:var(--gold);border-radius:50%;top:30%;left:50%;animation:particle 1.3s ease-out both}.result-mode .night{filter:brightness(1.15)}dialog{background:#131d33;color:var(--text);border:1px solid #e8b95b66;border-radius:18px;max-width:440px;width:calc(100% - 36px);padding:25px;max-height:85svh}dialog::backdrop{background:#030711b8;backdrop-filter:blur(5px)}dialog h2{font-size:21px;margin:0 0 12px}dialog p{font-size:15px;color:#c2c7d4}.dialog-actions{display:flex;gap:10px;margin-top:22px}.dialog-actions button{flex:1}.review-list{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:20px}.review-list button{text-align:left;font-size:13px;padding:10px}.review-list span{display:block;font-size:12px;color:var(--jade)}.review-list .missing{color:var(--gold)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.time-up{text-align:center;padding:25px;font-size:27px;color:var(--ivory)}@keyframes moonrise{from{opacity:.35;transform:translateY(35px)}to{opacity:1;transform:translateY(0)}}@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes drift{to{transform:translateX(30vw)}}@keyframes star{to{opacity:.4}}@keyframes pulse{50%{opacity:.7}}@keyframes glow{50%{box-shadow:0 0 30px #e8b95b22}}@keyframes sweep{from{transform:translateX(-100%)}to{transform:translateX(100%)}}@keyframes draw{from{stroke-dashoffset:200;opacity:1}to{stroke-dashoffset:0;opacity:0}}@keyframes particle{to{transform:translate(var(--x),var(--y));opacity:0}}@media(hover:hover){.choice:hover,.secondary:hover{border-color:#e8b95b80;background:#e8b95b0a}.primary:hover{background:#f0c773}.lantern:hover{color:var(--ivory)}}@media(max-width:700px){.mast{padding:18px 23px}.brand{font-size:19px}.brand small{display:none}.edition{font-size:10px}.entry{display:block;padding:26px 23px 30px;min-height:auto}.hero{text-align:center}.eyebrow{font-size:11px}.hero h1{font-size:38px;line-height:1.35;margin:15px 0 12px}.hero p{font-size:14px;margin:0 0 26px}.ornament{display:none}.entry-panel{padding:23px;border-radius:16px;max-width:440px;margin:auto}.panel-heading h2{font-size:18px}.score-rules{margin:18px 0 8px}.rule{padding:10px 12px}.rule strong{font-size:23px}.brief{margin:14px 0;font-size:13px}.entry-panel label{margin-top:16px}.entry-foot{position:static;margin-bottom:18px;font-size:10px}.night{background-position:center top;background-size:auto 100svh}.top-inner{padding:12px 16px 8px}.arena-brand{font-size:15px}.timer{font-size:26px}.progress-row{margin-top:4px}.lantern svg{width:18px}.progress-text{font-size:11px}.quiz-shell{padding:23px 16px 115px}.chapter{font-size:11px;margin-bottom:13px}.question{padding:22px 18px;border-radius:15px}.question h2{font-size:23px;margin:22px 0 8px}.hint{font-size:13px;margin-bottom:20px}.choice{padding:13px;gap:12px}.chosen{font-size:11px}.bottom-bar{padding:12px 16px max(12px,env(safe-area-inset-bottom))}.question-controls{margin-top:18px}.result-page{padding:16px}.result-card{padding:23px 23px 18px}.result-name{font-size:24px}.pair-grid{gap:12px}.pair{font-size:13px}.q-meta{font-size:12px}}@media(max-height:720px){.result-card{padding:17px 22px 15px}.result-name{margin-top:11px}.big-score{font-size:78px}.result-title{margin:12px 0}.stats{padding:12px 0;gap:10px}.result-year{margin-top:12px}.capture-note{margin-top:10px;padding:8px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:opacity .15s!important;scroll-behavior:auto!important}.particle,.pair-line{display:none}.night{transform:none}.choice.selected{transform:none}}

.hero{position:relative}.festival-icons{display:flex;justify-content:space-between;position:absolute;top:-42px;left:0;right:0;pointer-events:none;opacity:.6}.festival-icons span{font-size:24px;transform-origin:top center;animation:sway 6s ease-in-out infinite alternate}.festival-icons span:last-child{animation-delay:-3s}@keyframes sway{from{transform:rotate(-3deg)}to{transform:rotate(3deg)}}@media(max-width:700px){.festival-icons{top:4px;left:3px;right:3px}.festival-icons span{font-size:20px}}

/* Typography revision: clear Traditional Chinese on phone screens. */
:root{--muted:#c1c7d5;--line:rgba(244,231,178,.26)}
body{font-family:'PingFang TC','Microsoft JhengHei','Noto Sans TC',system-ui,-apple-system,sans-serif;line-height:1.7}
.hero h1{font-family:inherit;font-weight:700;letter-spacing:.045em;line-height:1.4;text-shadow:0 2px 12px #0b1026}
.hero p{font-size:1.0625rem;font-weight:500;color:#e3e6ed;letter-spacing:.025em}
.brand{font-weight:750}.brand small,.edition,.eyebrow,.entry-foot{font-size:.75rem}
.entry-panel{background:linear-gradient(150deg,#172139f5,#10172af7)}
.panel-heading{gap:12px;align-items:flex-start}.panel-heading h2{line-height:1.55;font-weight:650}.badge{flex-shrink:0}
.rule{font-size:1rem;font-weight:550}.rule strong{font-weight:650}.rule strong small{font-size:.875rem}
.fine,.privacy{font-size:.875rem;color:var(--muted);line-height:1.75}
.brief{font-size:.9375rem;color:#e0e3eb;line-height:1.75}.brief li{margin:9px 0}
label{font-size:1rem;font-weight:550}input{font-size:1.0625rem;font-weight:500;background:#0b1026d9;border-color:#8994ad80}input::placeholder{color:#bac2d1;font-weight:400}
.primary,.secondary{font-size:1rem;font-weight:650}.primary{color:#1f190c}
.arena-brand{font-size:1.0625rem;font-weight:650}.student{font-size:.875rem;color:#d2d8e4}.timer{font-weight:650;letter-spacing:.025em}
.progress-text{font-size:.8125rem;color:#d2d8e4}.chapter{font-size:.8125rem;letter-spacing:.025em}.q-meta{font-size:.9375rem;font-weight:600;letter-spacing:.025em}
.question{background:linear-gradient(140deg,#19233bf7,#10182ef7)}
.question h2{font-size:1.625rem;font-weight:650;line-height:1.75;letter-spacing:.025em;color:#fffaf0}
.hint{font-size:1rem;line-height:1.75;color:#cbd2df}
.choice{font-size:1.125rem;font-weight:550;background:#0b10268c;min-height:64px}.choice .letter{font-size:.9375rem;color:#c1c9d8}.chosen{font-size:.875rem;font-weight:600}
.answer-status{font-size:.875rem;color:#a0d1c0;line-height:1.7}
.pair{font-size:1rem;line-height:1.7;font-weight:550;min-height:90px}.pair-code{font-size:.8125rem;font-weight:500}
.result-brand{font-size:1.125rem;font-weight:650}.complete{font-size:.75rem;letter-spacing:.16em}.result-name{font-size:1.625rem;font-weight:700}.big-score{font-weight:600}.points-caption{font-size:.75rem;letter-spacing:.22em}
.result-title{font-weight:600}.stat small{font-size:.875rem;color:#cbd2df}.stat strong{font-size:1.5rem;font-weight:650}.stat strong span{font-size:.9375rem;color:#bac3d4}
.result-year,.result-code{font-size:.8125rem}.capture-note{font-size:1rem;line-height:1.6}.capture-note strong{font-weight:650}
dialog p{font-size:1rem;color:#d4dbe7}.review-list button{font-size:.9375rem}.review-list span{font-size:.875rem;color:#a0d1c0}
@media(max-width:700px){
.hero h1{font-size:2.5rem}.hero p{font-size:1rem}.panel-heading h2{font-size:1.125rem}.entry-panel{padding:22px}
.eyebrow{letter-spacing:.15em}.edition{letter-spacing:.06em}.entry-foot{letter-spacing:.06em}
.question h2{font-size:1.5rem}.q-meta{font-size:.875rem}.hint{font-size:.9375rem}.choice{font-size:1.0625rem;gap:10px;flex-wrap:wrap}.choice .chosen{margin-left:auto}
.pair{font-size:.9375rem;padding:10px 9px}.arena-brand{font-size:1rem}.chapter{font-size:.8125rem}.student{max-width:230px}
.result-name{font-size:1.625rem}.result-title{margin:14px 0 16px}.stats{gap:12px;padding:14px 0}
}

/* Mid-Autumn display typography; controls retain the readable sans-serif. */
@font-face{font-family:'ARIS Moon Serif';src:url('fonts/aris-moon-serif.woff') format('woff');font-style:normal;font-weight:600;font-display:swap}
:root{--festival-font:'ARIS Moon Serif','Noto Serif TC','Songti TC','PMingLiU',serif}
.hero h1{font-family:var(--festival-font);font-weight:600;font-size:clamp(2.75rem,5.5vw,4.25rem);line-height:1.45;letter-spacing:.09em;color:#fff7dc;text-shadow:0 2px 8px #0b1026}
.hero h1 span{color:var(--ivory)}
.question h2{font-family:var(--festival-font);font-weight:600;font-size:1.75rem;line-height:1.85;letter-spacing:.04em;color:#fff4d5}
.arena-brand,.result-brand,.result-title,.ornament{font-family:var(--festival-font);font-weight:600;letter-spacing:.06em}
.result-brand{font-size:1.1875rem}.result-title{font-size:1.0625rem;line-height:1.6}
@media(max-width:700px){.hero h1{font-size:2.75rem;letter-spacing:.07em}.question h2{font-size:1.5625rem;line-height:1.85}.arena-brand{font-size:1rem}.result-title{letter-spacing:.025em}}

/* V1 functional adaptation only: four clue rows / six answer lanterns. */
.pair-column{grid-auto-rows:1fr;min-width:0}.pair-copy{white-space:pre-line}.lantern-answer-label{display:flex;align-items:center;gap:7px}.lantern-answer-label svg{width:18px;height:26px;flex-shrink:0;fill:transparent;stroke:var(--pair);stroke-width:1.4}.matched .lantern-answer-label svg{fill:#b8403844}.answer-lantern{min-height:82px}.score-denominator{font-family:inherit;font-size:1.5rem;letter-spacing:0;font-weight:500;color:var(--ivory)}
@media(max-width:400px){.lantern-answer-label{gap:5px}.lantern-answer-label svg{width:14px}.answer-lantern{padding:9px 7px}.result-card .big-score{font-size:5rem}.score-denominator{font-size:1.375rem}}

/* V1 R1: unambiguous matching states, without changing the approved theme. */
.quiz-shell{padding-bottom:40px}
.pair{border-width:2px;background:#0b1026;color:#f7f2e8}
.pair.matched{background:var(--pair);border-color:var(--pair);color:#10182e}
.pair.matched .pair-code{color:#10182e;font-weight:700}
.pair.active{outline:3px solid #fff5cf;outline-offset:3px;box-shadow:0 0 0 6px #0b1026}
.pair.active .pair-code{font-weight:750}
.pair-code{display:block;line-height:1.65;margin-bottom:5px}
.matched .lantern-answer-label svg{stroke:#10182e;fill:#10182e0a}
.answer-lantern:not(.matched){border-color:#8998b5}
.question h2:last-child{margin-bottom:20px}