/* source: inline-1 */

:root{--ink:#17211f;--muted:#65706d;--faint:#919a97;--line:#e5e8e6;--line-strong:#cfd6d2;--accent:#214f77;--accent-soft:#eef5f9;--paper:#fff;--good:#1f6b52;--bad:#a13d39;--sans:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","Noto Sans JP","Hiragino Sans",Arial,sans-serif;--serif:"Noto Serif TC","Noto Serif JP","Yu Mincho","Hiragino Mincho ProN",Georgia,serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.8;text-rendering:optimizeLegibility}a{color:inherit}button,a{touch-action:manipulation}button{font:inherit}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.site-skip{position:absolute;left:16px;top:-80px;z-index:1000;background:#111;color:#fff;padding:10px 14px;text-decoration:none}.site-skip:focus{top:12px}
.site-nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.site-nav-inner{width:min(1120px,calc(100% - 40px));min-height:72px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.site-brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}.site-mark{width:40px;height:40px;display:grid;place-items:center;position:relative;background:linear-gradient(145deg,#2f73a8,#245d8c);border:1px solid #174b74;color:#fff;font:700 22px/1 var(--serif);box-shadow:4px 4px 0 #d9e8f3,0 5px 14px rgba(25,74,111,.13),inset 0 1px 0 rgba(255,255,255,.24);flex:0 0 auto;transition:transform .22s ease,box-shadow .22s ease}.site-brand:hover .site-mark{transform:translate(-1px,-2px);box-shadow:6px 6px 0 #d9e8f3,0 9px 18px rgba(25,74,111,.17),inset 0 1px 0 rgba(255,255,255,.3)}.site-brand:focus-visible{outline:3px solid rgba(33,79,119,.22);outline-offset:5px}.site-brand strong{display:block;font:600 17px/1.25 var(--serif)}.site-brand small{display:block;color:var(--faint);font-size:10px;line-height:1.3;margin-top:3px;white-space:nowrap}.site-links{display:flex;align-items:center;gap:20px;font-size:13px;font-weight:600;white-space:nowrap}.site-links a{--nav-color:#555f5c;position:relative;text-decoration:none;color:#555f5c;padding:8px 1px;transition:color .2s ease}.site-links a::after{content:"";position:absolute;left:0;right:0;bottom:1px;height:2px;background:var(--nav-color);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}.site-links .nav-japanese{--nav-color:#214f77}.site-links .nav-learning{--nav-color:#2f776c}.site-links .nav-travel{--nav-color:#b27b00}.site-links .nav-tools{--nav-color:#343b3a}.site-links a[aria-current="page"]{color:var(--nav-color);font-weight:800}.site-links a[aria-current="page"]::after,.site-links a:hover::after,.site-links a:focus-visible::after{transform:scaleX(1)}.site-links a:hover,.site-links a:focus-visible{color:var(--nav-color)}
.page{width:min(900px,calc(100% - 40px));margin:auto;padding:56px 0 84px}.article-head{padding-bottom:34px;border-bottom:1px solid var(--line-strong)}.back-link{display:inline-block;margin-bottom:20px;color:#61727a;font-size:12px;font-weight:700;text-decoration:none}.back-link:hover{color:var(--accent);text-decoration:underline;text-underline-offset:4px}.eyebrow{margin:0 0 14px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}h1{margin:0;font:700 clamp(34px,6vw,58px)/1.2 var(--serif);letter-spacing:-.035em}.lead{margin:20px 0 0;color:#4d5754;font-size:16px;line-height:1.9}.meta{display:flex;gap:8px 18px;flex-wrap:wrap;margin-top:22px;color:#8e9794;font-size:12px}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}.tool-btn{min-height:44px;border:1px solid var(--line-strong);background:#fff;color:#34413e;padding:8px 13px;display:inline-flex;align-items:center;gap:8px;text-decoration:none;cursor:pointer;border-radius:0}.tool-btn:hover{border-color:#81938d;background:#fbfcfb}.tool-btn[aria-pressed="true"]{border-color:#6e8796;color:var(--accent);background:var(--accent-soft)}.tool-btn.is-armed{border-color:#a13d39;color:#8a302d;background:#fff7f6}.quiz-dock{position:fixed;right:24px;bottom:24px;z-index:70;min-width:338px;background:rgba(255,255,255,.97);border:1px solid var(--line-strong);box-shadow:0 10px 30px rgba(23,33,31,.12);backdrop-filter:blur(12px);opacity:0;transform:translateY(12px);pointer-events:none;transition:opacity .18s ease,transform .18s ease}.quiz-dock.show{opacity:1;transform:translateY(0);pointer-events:auto}.dock-main{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 10px 9px 14px}.dock-stat{display:flex;align-items:baseline;gap:8px;white-space:nowrap}.dock-progress{font:700 14px/1 var(--serif);color:#293531}.dock-score{font-size:11px;color:#7c8783}.dock-next{min-height:38px;border:0;background:#17211f;color:#fff;padding:7px 12px;cursor:pointer;font-size:12px;font-weight:750}.dock-next:hover{background:#214f77}.dock-next:focus-visible,.dock-action:focus-visible{outline:3px solid rgba(33,79,119,.24);outline-offset:2px}.dock-actions{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) 44px;border-top:1px solid #e1e6e3}.dock-action{min-height:42px;border:0;background:transparent;color:#4b5753;padding:8px 10px;font-size:11px;font-weight:750;cursor:pointer;white-space:nowrap}.dock-action+.dock-action{border-left:1px solid #e1e6e3}.dock-action:hover{background:#f1f5f6;color:var(--accent)}.dock-action[aria-pressed="true"]{background:var(--accent-soft);color:var(--accent)}.dock-action.is-armed{background:#fff4f3;color:#8a302d}.dock-action.icon-only{padding:7px 0;font-size:17px}
.quiz{border-top:1px solid var(--line-strong);margin-top:46px}.question{padding:42px 0 56px;border-bottom:1px solid var(--line);scroll-margin-top:92px}.question+.question{padding-top:58px}.question-top{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:8px}.question-number{font:600 18px/1 var(--serif);color:#87918d;letter-spacing:.04em}.icon-button{width:44px;height:44px;border:1px solid var(--line);background:#fff;color:#66726e;display:grid;place-items:center;cursor:pointer}.icon-button:hover{border-color:#8ea0aa;color:var(--accent);background:#fafcfd}.icon-button svg,.text-audio svg,.tool-btn svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.question-text{margin:0 0 26px;font-family:"Noto Sans JP","Yu Gothic","Hiragino Kaku Gothic ProN",var(--sans);font-size:clamp(20px,2.7vw,24px);font-weight:500;line-height:2;color:#17211f}ruby{ruby-position:over}rt{font-size:.58em;line-height:1;color:#8e9693;font-weight:400}.question-underline{color:var(--accent);font-weight:800;border-bottom:2px solid #83a5bb;padding-bottom:2px}
.options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.option{min-height:56px;border:1px solid #d9dfdc;background:#fff;color:#27312f;padding:12px 15px;display:flex;align-items:center;gap:12px;text-align:left;cursor:pointer;transition:border-color .16s ease,background-color .16s ease,color .16s ease}.option:hover{border-color:#8ba1ae;background:#f9fbfc}.option:focus-visible,.icon-button:focus-visible,.tool-btn:focus-visible,.text-audio:focus-visible,.site-links a:focus-visible,.related a:focus-visible{outline:3px solid rgba(33,79,119,.24);outline-offset:3px}.option-num{display:grid;place-items:center;width:26px;height:26px;flex:0 0 26px;border:1px solid #cdd5d1;color:#7d8884;font-size:12px;font-weight:800}.option-text{font-family:"Noto Sans JP","Yu Gothic","Hiragino Kaku Gothic ProN",var(--sans);font-size:17px}.option.is-correct{border-color:#6b9d89;background:#f3f8f5;color:#154c3a}.option.is-wrong{border-color:#c99793;background:#fcf5f4;color:#7e2e2a}.option.is-peek-correct{border-color:#8ea9ba;background:#f4f8fb;color:#214f77}.option:disabled{cursor:default;opacity:1}
.answer{margin-top:28px;padding-top:26px;border-top:1px solid var(--line-strong)}.answer.is-peek .result-mark{background:var(--accent)}.answer-head{display:flex;align-items:center;gap:13px;margin-bottom:14px}.result-mark{width:32px;height:32px;display:grid;place-items:center;background:#1e6750;color:white;font-weight:800}.answer-kicker{display:block;color:#7f8b87;font-size:10px;font-weight:800;letter-spacing:.15em}.answer-head strong{display:block;font-size:16px;color:#203a31}.translation{margin:0 0 22px;font:500 17px/1.85 var(--serif);color:#303a37}.explain-list{border-top:1px solid var(--line)}.explain-row{display:grid;grid-template-columns:110px 1fr;gap:24px;padding:17px 0;border-bottom:1px solid var(--line)}.explain-label{color:#7f8986;font-size:11px;font-weight:800;letter-spacing:.08em}.explain-row p{margin:0;color:#4b5653;font-size:15px;line-height:1.9}.wrong-row p{color:#66514f}.vocab-line{margin-top:26px;padding:17px 18px 18px;border-left:2px solid #d5e5ef;background:#fbfdfe}.vocab-kicker{margin-bottom:8px;color:#758992;font-size:10px;font-weight:800;letter-spacing:.14em}.vocab-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.vocab-copy{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;font-family:"Noto Sans JP","Yu Gothic","Hiragino Kaku Gothic ProN",var(--sans);font-size:23px;font-weight:750;line-height:1.45}.vocab-gloss{margin-top:4px;font-family:var(--sans);font-size:14px;font-weight:500;color:#65716d}.vocab-collocation{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-top:9px;padding-top:9px;border-top:1px solid #e7edef}.vocab-phrase{font-family:"Noto Sans JP","Yu Gothic","Hiragino Kaku Gothic ProN",var(--sans);font-size:14px;font-weight:650;color:#263b45}.vocab-phrase-zh{font-size:13px;color:#83908c}.text-audio{min-height:36px;border:0;background:transparent;color:#567080;display:inline-flex;align-items:center;gap:6px;padding:5px 4px;cursor:pointer;font-size:12px;font-weight:700}.text-audio:hover{color:var(--accent)}
.result-summary{margin-top:48px;padding:34px 0 38px;border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong)}.result-summary[hidden]{display:none}.result-kicker{margin:0 0 10px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.16em}.result-main{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}.result-score{margin:0;font:700 clamp(38px,6vw,58px)/1 var(--serif);letter-spacing:-.04em}.result-meta{display:flex;gap:10px 22px;flex-wrap:wrap;color:#697470;font-size:13px}.result-meta strong{color:#27322f;font-weight:750}.related{padding:52px 0 0}.related h2{margin:0 0 8px;font:700 27px/1.3 var(--serif)}.related-intro{margin:0 0 22px;color:var(--faint);font-size:13px}.related ul{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}.related li{border-bottom:1px solid var(--line)}.related a{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:17px 0;text-decoration:none}.related a:hover .related-title{text-decoration:underline;text-underline-offset:4px}.related-title{font-weight:650}
.footer{background:#121817;color:#e7ece9}.footer-inner{width:min(1120px,calc(100% - 40px));margin:auto;padding:38px 0 44px;font-size:12px}.footer-links{display:flex;gap:18px;flex-wrap:wrap;margin-bottom:14px}.footer-links a{text-decoration:none;color:#d7dfdb}.footer-links a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px}.footer-copy{color:#8f9b96}
.toast{position:fixed;left:50%;bottom:24px;z-index:100;transform:translate(-50%,16px);background:#17211f;color:#fff;padding:10px 15px;font-size:13px;opacity:0;pointer-events:none;transition:.2s ease}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:700px){body{font-size:15px;line-height:1.85}.site-nav-inner{width:calc(100% - 28px);min-height:64px;gap:12px}.site-mark{width:35px;height:35px;font-size:19px;box-shadow:3px 3px 0 #d9e8f3,0 4px 10px rgba(25,74,111,.11)}.site-brand strong{font-size:14px}.site-brand small{display:none}.site-links{gap:11px;font-size:11px}.page{width:calc(100% - 32px);padding:40px 0 calc(112px + env(safe-area-inset-bottom))}h1{font-size:38px;line-height:1.25}.lead{font-size:15px}.toolbar{display:grid;grid-template-columns:1fr 1fr}.tool-btn{justify-content:center;padding-left:9px;padding-right:9px;font-size:12px}.quiz{margin-top:36px}.question{padding:34px 0 44px}.question+.question{padding-top:44px}.question-top{margin-bottom:7px}.question-text{font-size:20px;line-height:2.05;margin-bottom:22px}.options{grid-template-columns:1fr;gap:9px}.option{min-height:54px;padding:12px 13px}.option-text{font-size:16px}.answer{margin-top:24px;padding-top:22px}.translation{font-size:16px}.explain-row{display:block;padding:16px 0}.explain-label{display:block;margin-bottom:6px}.explain-row p{font-size:14px;line-height:1.9}.vocab-line{margin-top:24px;padding:15px 14px 16px}.vocab-copy{font-size:21px}.vocab-gloss{font-size:13px}.vocab-collocation{display:block}.vocab-phrase,.vocab-phrase-zh{display:block}.vocab-phrase-zh{margin-top:2px}.text-audio span{display:none}.result-summary{margin-top:38px;padding:28px 0 30px}.result-main{display:block}.result-meta{margin-top:14px}.quiz-dock{left:0;right:0;bottom:0;min-width:0;border-left:0;border-right:0;border-bottom:0;box-shadow:0 -8px 24px rgba(23,33,31,.09)}.dock-main{padding:8px max(14px,env(safe-area-inset-right)) 8px max(14px,env(safe-area-inset-left))}.dock-score{display:none}.dock-next{min-height:40px;padding:7px 12px}.dock-actions{grid-template-columns:minmax(0,1fr) minmax(0,1fr) 46px;padding-bottom:env(safe-area-inset-bottom)}.dock-action{min-height:42px;padding:8px 7px}.footer-inner{width:calc(100% - 32px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}


/* ===== FINAL REVIEW V3: single-row persistent quiz controls ===== */
.quiz-dock{right:22px;bottom:22px;min-width:0;display:flex;align-items:stretch;gap:0;padding:0;background:rgba(255,255,255,.98);border:1px solid var(--line-strong);box-shadow:0 10px 30px rgba(23,33,31,.12);overflow:hidden}
.quiz-dock.show{display:flex}
.dock-progress,.dock-score,.dock-control{min-height:44px;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap}
.dock-progress{padding:0 13px;font:700 13px/1 var(--serif);color:#293531}
.dock-score{padding:0 11px 0 0;font-size:10px;color:#7c8783}
.dock-control{border:0;border-left:1px solid #e1e6e3;background:#fff;color:#4b5753;padding:0 12px;font-size:11px;font-weight:750;cursor:pointer}
.dock-control:hover,.dock-control:focus-visible{background:#f1f5f6;color:var(--accent);outline:none}
.dock-control[aria-pressed="true"]{background:var(--accent-soft);color:var(--accent)}
.dock-control.is-armed{background:#fff4f3;color:#8a302d}
.dock-next{background:#17211f;color:#fff;border-left:0;padding-left:14px;padding-right:14px}
.dock-next:hover,.dock-next:focus-visible{background:#214f77;color:#fff}
.dock-up{width:44px;padding:0;font-size:17px}
/* old two-row wrappers are no longer used */
.dock-main,.dock-actions,.dock-stat{display:contents!important}
@media(max-width:700px){
  .page{padding-bottom:calc(82px + env(safe-area-inset-bottom))}
  .quiz-dock{left:0;right:0;bottom:0;width:100%;border-left:0;border-right:0;border-bottom:0;box-shadow:0 -8px 24px rgba(23,33,31,.09);padding-bottom:env(safe-area-inset-bottom)}
  .dock-progress{flex:0 0 auto;padding:0 10px;font-size:12px}
  .dock-score{display:none}
  .dock-control{min-width:0;flex:1 1 auto;padding:0 7px;font-size:11px}
  .dock-next{padding:0 8px}
  .dock-next{font-size:0}
  .dock-next::after{content:'下一個';font-size:11px}
  #dock-reveal{font-size:0}
  #dock-reveal::after{content:'答案';font-size:11px}
  #dock-reset{font-size:0}
  #dock-reset::after{content:'重作';font-size:11px}
  #dock-reset.is-armed::after{content:'再按一次';font-size:10px}
  .dock-up{flex:0 0 42px;width:42px;font-size:17px!important}
  .dock-up::after{content:none!important}
}

/* compact labels are real button text, so JS state changes remain visible on mobile */
@media(max-width:700px){
  .dock-next,#dock-reveal,#dock-reset{font-size:11px!important}
  .dock-next::after,#dock-reveal::after,#dock-reset::after{content:none!important}
}

/* ===== FINAL REVIEW V4: blue-white dock + answer-focused reading ===== */
.quiz-dock{background:rgba(255,255,255,.985);border-color:#d6e0e5;box-shadow:0 9px 28px rgba(26,68,96,.10)}
.dock-control{color:#476170;background:#fff;border-left-color:#e2e9ed}
.dock-control:hover,.dock-control:focus-visible{background:#f3f8fb;color:var(--accent)}
.dock-control[aria-pressed="true"]{background:#eaf3f8;color:#214f77}
.dock-control.is-armed{background:#e4eff5;color:#173f5c}
.dock-next{background:#eef5f9!important;color:#214f77!important;border-left:1px solid #dce7ed!important;font-weight:800}
.dock-next:hover,.dock-next:focus-visible{background:#e2eef5!important;color:#173f5c!important}
.answer-choice-summary{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:14px;padding:10px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);color:#52605b;font-size:13px}
.answer-choice-summary[hidden]{display:none}
.summary-correct{font-weight:800;color:#1d634d}
.summary-selected{color:#80514d}
.summary-selected.is-correct{color:#56716a}
.summary-toggle{margin-left:auto;border:0;background:transparent;color:#557286;padding:4px 0;font-size:11px;font-weight:750;cursor:pointer}
.summary-toggle:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.options.is-collapsed{display:none!important}
.answer{scroll-margin-top:92px}
.question.is-answered{padding-bottom:42px}
.question.is-answered .question-text{margin-bottom:12px}
.question.is-answered .answer{margin-top:14px;padding-top:16px}
.question.is-answered .answer-head{margin-bottom:8px}
.question.is-answered .translation{margin-bottom:14px}
@media(min-width:701px){
  .page{width:min(1040px,calc(100% - 56px))}
  .question{padding-bottom:48px}
  .question+.question{padding-top:50px}
  .answer-head{margin-bottom:9px}
  .translation{margin-bottom:14px;font-size:16px}
  .explain-list{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.45fr);border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line)}
  .explain-row{display:block!important;grid-template-columns:none!important;gap:0!important;padding:13px 18px 14px 0;border-bottom:0!important}
  .explain-row+.explain-row{padding-left:22px;border-left:1px solid var(--line)!important}
  .explain-label{display:block;margin-bottom:5px}
  .explain-row p{font-size:14px;line-height:1.72}
  .vocab-line{margin-top:14px;padding:11px 0 0;border-left:0;background:#fff;border-top:1px solid #e7edef;display:grid;grid-template-columns:130px auto minmax(120px,1fr) minmax(190px,1.25fr);gap:10px 18px;align-items:center}
  .vocab-kicker{margin:0}
  .vocab-head{margin:0;white-space:nowrap}
  .vocab-copy{font-size:19px}
  .vocab-gloss{margin:0;font-size:13px}
  .vocab-collocation{margin:0;padding:0;border:0;display:block}
  .vocab-phrase,.vocab-phrase-zh{display:block;font-size:12px}
  .text-audio{min-height:30px}
}
@media(max-width:700px){
  .answer-choice-summary{margin-top:12px;padding:9px 0;font-size:12px}
  .summary-toggle{margin-left:0;width:100%;text-align:left;padding-top:2px}
  .answer{scroll-margin-top:12px}
  .question.is-answered{padding-bottom:37px}
  .question.is-answered .answer{margin-top:12px;padding-top:15px}
  .question.is-answered .translation{margin-bottom:12px}
  .question.is-answered .explain-row{padding:12px 0}
  .question.is-answered .vocab-line{margin-top:16px}
}


/* ===== FINAL REVIEW V5: quieter blue-gray layers + context-preserving answer reveal ===== */
body{background:#f4f7f9}
.site-nav{background:rgba(255,255,255,.98)}
.page{padding-top:38px}
.article-head{background:#fff;border:1px solid #e1e7e9;padding:28px 30px 30px}
.quiz{border-top:0!important;margin-top:24px!important}
.question{background:#fff;border:1px solid #dfe6e9!important;margin:18px 0!important;padding:34px 28px 38px!important}
.question+.question{padding-top:34px!important}
.question-number{color:#6f8794}
.question.is-answered{border-color:#d6e2e6!important}
.question.is-answered .answer{margin:14px -6px 0!important;padding:17px 18px 15px!important;background:#f5f9f7;border:1px solid #dce9e2!important}
.question.is-answered .answer-head{margin-bottom:7px!important}
.question.is-answered .translation{margin-bottom:12px!important}
.question.is-answered .explain-list{background:#fff}
.question.is-answered .vocab-line{background:#f1f6f9!important;border-top:1px solid #dce7ed!important;padding:12px 14px!important;margin:12px 0 0!important}
.answer-choice-summary{background:#f8fafb;padding:9px 10px!important;border:1px solid #e2e8eb!important}
.result-summary,.related{background:#fff;border:1px solid #e1e7e9;padding-left:28px!important;padding-right:28px!important}
.quiz-dock{background:rgba(255,255,255,.985)!important;border-color:#d6e0e5!important}
.dock-control,.dock-next{background:#fff!important;color:#476170!important}
.dock-control:hover,.dock-control:focus-visible,.dock-next:hover,.dock-next:focus-visible{background:#edf5f9!important;color:#214f77!important}
.dock-next{background:#eaf3f8!important;color:#214f77!important}
.dock-control[aria-pressed="true"]{background:#eaf3f8!important;color:#214f77!important}
.dock-control.is-armed{background:#e4eff5!important;color:#173f5c!important}
@media(min-width:701px){
 .page{width:min(1120px,calc(100% - 56px))!important}
 .question{padding:32px 30px 35px!important}
 .question.is-answered{padding-bottom:30px!important}
 .question.is-answered .explain-row{padding-top:11px!important;padding-bottom:12px!important}
 .question.is-answered .vocab-line{grid-template-columns:130px auto minmax(120px,1fr) minmax(190px,1.15fr)!important}
}
@media(max-width:700px){
 body{background:#f6f8fa}
 .page{width:100%!important;padding:20px 12px calc(106px + env(safe-area-inset-bottom))!important}
 .article-head{padding:24px 18px 25px}
 .question{margin:12px 0!important;padding:28px 16px 31px!important}
 .question+.question{padding-top:28px!important}
 .question.is-answered .answer{margin:12px 0 0!important;padding:15px 13px!important}
 .question.is-answered .vocab-line{padding:12px 12px!important}
 .result-summary,.related{padding-left:18px!important;padding-right:18px!important}
}


.theme-toggle{width:38px;height:38px;flex:0 0 38px;border:1px solid var(--line-strong);background:transparent;color:var(--accent);display:grid;place-items:center;cursor:pointer;padding:0;transition:background-color .18s ease,border-color .18s ease,color .18s ease}
.theme-toggle:hover,.theme-toggle:focus-visible{background:var(--accent-soft);border-color:#91aabd;outline:none}
.theme-icon{grid-area:1/1;font-size:20px;line-height:1}.theme-sun{display:none}html[data-theme="dark"] .theme-moon{display:none}html[data-theme="dark"] .theme-sun{display:block}
html[data-theme="dark"]{color-scheme:dark}
@media(max-width:767px){.theme-toggle{width:34px;height:34px;flex-basis:34px}.theme-icon{font-size:18px}}


/* 題型：桌機用顏色區分題目、答案、解析與單字；手機降低色量 */
body{background:#f3f6f8!important}
.page{background:transparent}
@media(min-width:768px){
 .question{margin:22px -24px 0!important;padding:30px 28px 34px!important;background:#f8fbfd;border:1px solid #dbe6ed!important;border-top:3px solid #7fa4bc!important}
 .question+.question{padding-top:30px!important}
 .question-top{margin-bottom:8px!important}
 .options{gap:10px!important}
 .option{background:#fff!important}
 .question.is-answered{background:#f8fbfd!important;border-color:#cfdfe8!important}
 .question.is-answered .answer{background:#f2f8f4!important;border:1px solid #cfe1d6!important;border-left:4px solid #6f9b81!important}
 .question.is-answered .explain-list{display:grid!important;grid-template-columns:minmax(0,.9fr) minmax(0,1.45fr)!important;background:transparent!important;border-top:0!important;gap:10px}
 .question.is-answered .explain-row{display:block!important;padding:14px 16px!important;border:1px solid #dce6ec!important;background:#f3f7fa!important}
 .question.is-answered .wrong-row{background:#fff5f3!important;border-color:#ead7d2!important}
 .question.is-answered .vocab-line{background:#fff9ec!important;border:1px solid #eadfbe!important;border-left:4px solid #c3a457!important}
 .answer-choice-summary{background:#eef5f9!important;border-color:#d3e1ea!important}
}
.quiz-dock{background:rgba(255,255,255,.98)!important;border-color:#ccdbe4!important}
.quiz-dock .dock-control{background:#fff!important;color:#36576f!important;border-color:#d9e4ea!important}
.quiz-dock .dock-next{background:#edf5fa!important;color:#214f77!important}
.quiz-dock .dock-control:hover,.quiz-dock .dock-control:focus-visible,.quiz-dock .dock-control[aria-pressed="true"]{background:#e6f0f6!important;color:#173f60!important}
.quiz-dock .dock-control.is-armed{background:#f7eee6!important;color:#7c5633!important}
/* 日夜 */
html[data-theme="dark"]{--ink:#e7eeeb;--muted:#aab6b1;--faint:#84918c;--line:#2b3632;--line-strong:#3a4743;--accent:#7fb0d2;--accent-soft:#1a2b36;--paper:#121817;--good:#72a58e;--bad:#c47d75}
html[data-theme="dark"] body{background:#0f1514!important;color:var(--ink)}
html[data-theme="dark"] .site-nav{background:rgba(15,21,20,.96);border-bottom-color:#2d3935}
html[data-theme="dark"] .site-brand strong,html[data-theme="dark"] .article-head h1,html[data-theme="dark"] .question-text,html[data-theme="dark"] .related h2{color:#edf3f0}
html[data-theme="dark"] .site-brand small,html[data-theme="dark"] .lead,html[data-theme="dark"] .meta{color:#9da9a4}
html[data-theme="dark"] .tool-btn,html[data-theme="dark"] .icon-button{background:#151c1a;color:#c7d2cd;border-color:#34413d}
html[data-theme="dark"] .option{background:#151c1a!important;color:#e1e8e5;border-color:#35413d}
html[data-theme="dark"] .option:hover{background:#18231f!important;border-color:#50635c}
html[data-theme="dark"] .option.is-correct{background:#183027!important;border-color:#5a8d76!important;color:#cce6da}
html[data-theme="dark"] .option.is-wrong{background:#321f1d!important;border-color:#a96962!important;color:#edc6c1}
html[data-theme="dark"] .answer-choice-summary{background:#18242a!important;border-color:#334854!important;color:#dce7e2}
html[data-theme="dark"] .question.is-answered .answer{background:#14231d!important;border-color:#294238!important}
html[data-theme="dark"] .question.is-answered .explain-row{background:#172229!important;border-color:#2c3d46!important;color:#cdd7d3}
html[data-theme="dark"] .question.is-answered .wrong-row{background:#2a1d1b!important;border-color:#49302c!important}
html[data-theme="dark"] .question.is-answered .vocab-line{background:#292317!important;border-color:#4a4026!important}
html[data-theme="dark"] .vocab-gloss,html[data-theme="dark"] .vocab-phrase-zh,html[data-theme="dark"] .explain-row p,html[data-theme="dark"] .translation{color:#bdc8c3!important}
html[data-theme="dark"] .quiz-dock{background:rgba(16,22,21,.98)!important;border-color:#34413d!important;box-shadow:0 -8px 24px rgba(0,0,0,.28)}
html[data-theme="dark"] .quiz-dock .dock-progress,html[data-theme="dark"] .quiz-dock .dock-score{color:#b8c4bf}
html[data-theme="dark"] .quiz-dock .dock-control{background:#141b19!important;color:#a9c9df!important;border-color:#303d38!important}
html[data-theme="dark"] .quiz-dock .dock-next{background:#1a2b36!important;color:#9dcced!important}
html[data-theme="dark"] .related a{color:#dce5e1}
html[data-theme="dark"] .footer{background:#0d1110;border-top-color:#222b28}
@media(min-width:768px){
 html[data-theme="dark"] .question{background:#121b1f!important;border-color:#283942!important;border-top-color:#6f9ab5!important}
 html[data-theme="dark"] .question.is-answered{background:#121b1f!important;border-color:#2f424b!important}
}
@media(max-width:767px){
 body{background:#fff!important}
 html[data-theme="dark"] body{background:#101514!important}
 .question{background:transparent!important}
 .question.is-answered .answer{background:#f6faf7!important}
 .question.is-answered .wrong-row{background:#fff8f6!important}
 .question.is-answered .vocab-line{background:#fffaf0!important}
 html[data-theme="dark"] .question.is-answered .answer{background:#14231d!important}
 html[data-theme="dark"] .question.is-answered .wrong-row{background:#2a1d1b!important}
 html[data-theme="dark"] .question.is-answered .vocab-line{background:#292317!important}
}



/* source: v7-final-overrides */

@media(min-width:768px){
 .site-nav-inner{width:min(1180px,calc(100% - 64px))!important}
 .site-links{margin-left:auto!important}
 .theme-toggle{margin-left:18px!important}
}
/* One continuous reading axis: color appears inside the state, not as giant page panels. */
body{background:#f7f9fa!important}
.page{width:min(1040px,calc(100% - 56px))!important;background:transparent!important;padding-top:34px!important}
.article-head{background:linear-gradient(90deg,#f3f8fb 0,#fff 72%)!important;border:0!important;border-top:3px solid #7fa4bc!important;border-bottom:1px solid #d9e2e6!important;padding:26px 28px 28px!important}
.quiz{margin-top:14px!important;border-top:0!important}
.question,
.question.is-answered{position:relative;background:transparent!important;border:0!important;border-bottom:1px solid #d8e1e5!important;margin:0!important;padding:42px 4px 44px!important}
.question:first-child{border-top:0!important}
.question+.question{padding-top:42px!important}
.question-number{color:#5e8197!important;font-weight:800!important}
.question::before{content:"";position:absolute;left:0;top:0;width:42px;height:2px;background:#b8cfdd}
.question:first-child::before{display:none}
.option{background:#fff!important;border-color:#d6e0e4!important}
.option:hover{background:#f8fbfd!important;border-color:#86a5b8!important}
.option.is-correct{background:#f0f8f4!important;border-color:#71a18a!important;color:#154c3a!important}
.option.is-wrong{background:#fff3f1!important;border-color:#ce8f88!important;color:#7e2e2a!important}
.answer-choice-summary{background:#eef5f9!important;border:1px solid #d5e3eb!important;padding:9px 11px!important}
.question.is-answered .answer{margin:14px 0 0!important;padding:16px 18px 15px!important;background:#f4faf6!important;border:1px solid #d5e7dc!important;border-left:4px solid #719b83!important}
.question.is-answered .translation{margin-bottom:11px!important}
.question.is-answered .explain-list{display:grid!important;grid-template-columns:minmax(0,.9fr) minmax(0,1.45fr)!important;gap:10px!important;background:transparent!important;border:0!important}
.question.is-answered .explain-row{display:block!important;padding:12px 14px!important;border:1px solid #dae5eb!important;background:#f3f8fb!important}
.question.is-answered .wrong-row{background:#fff6f4!important;border-color:#ead9d5!important}
.question.is-answered .vocab-line{margin:10px 0 0!important;padding:11px 13px!important;background:#fff9eb!important;border:1px solid #e9dfbf!important;border-left:4px solid #c2a558!important}
.result-summary{margin-top:34px!important;padding:26px 0 28px!important;background:transparent!important;border:0!important;border-top:2px solid #b9cedb!important;border-bottom:1px solid #dce4e7!important}
.related{margin:0!important;padding:34px 0 12px!important;background:transparent!important;border:0!important}
.related ul{background:#fff;border-top:1px solid #dce4e7!important}
.related li{border-bottom-color:#dce4e7!important}
.related a{padding:15px 14px!important}
.quiz-dock{background:rgba(255,255,255,.985)!important;border-color:#ccdbe4!important}
.quiz-dock .dock-control{background:#fff!important;color:#36576f!important;border-color:#d9e4ea!important}
.quiz-dock .dock-next{background:#edf5fa!important;color:#214f77!important}
.quiz-dock .dock-control:hover,.quiz-dock .dock-control:focus-visible,.quiz-dock .dock-control[aria-pressed="true"]{background:#e6f0f6!important;color:#173f60!important}
.quiz-dock .dock-control.is-armed{background:#f7eee6!important;color:#7c5633!important}
/* Dark mode contrast */
html[data-theme="dark"] body{background:#101514!important;color:#e7eeeb!important}
html[data-theme="dark"] .site-links a{color:#aebbb6!important}
html[data-theme="dark"] .site-links .nav-japanese[aria-current="page"]{color:#8ec5ec!important}
html[data-theme="dark"] .site-links .nav-learning:hover{color:#83c5b6!important}
html[data-theme="dark"] .site-links .nav-travel:hover{color:#dfbf70!important}
html[data-theme="dark"] .site-links .nav-tools:hover{color:#d2dbd7!important}
html[data-theme="dark"] .theme-toggle{color:#9dcced!important;border-color:#42514c!important;background:#141b19!important}
html[data-theme="dark"] .article-head{background:linear-gradient(90deg,#15222a 0,#111716 72%)!important;border-top-color:#638da8!important;border-bottom-color:#33413c!important}
html[data-theme="dark"] .article-head h1,
html[data-theme="dark"] .question-text,
html[data-theme="dark"] .answer-head strong,
html[data-theme="dark"] .vocab-copy,
html[data-theme="dark"] .related h2,
html[data-theme="dark"] .related a{color:#e8efec!important}
html[data-theme="dark"] .lead,
html[data-theme="dark"] .meta,
html[data-theme="dark"] .translation,
html[data-theme="dark"] .explain-row p,
html[data-theme="dark"] .vocab-gloss,
html[data-theme="dark"] .vocab-phrase-zh,
html[data-theme="dark"] .result-meta{color:#b8c4bf!important}
html[data-theme="dark"] .tool-btn,
html[data-theme="dark"] .icon-button{background:#151c1a!important;color:#cbd6d1!important;border-color:#384641!important}
html[data-theme="dark"] .question,html[data-theme="dark"] .question.is-answered{border-bottom-color:#2f3c38!important}
html[data-theme="dark"] .question::before{background:#466b80!important}
html[data-theme="dark"] .option{background:#151c1a!important;color:#e1e8e5!important;border-color:#35413d!important}
html[data-theme="dark"] .option:hover{background:#18231f!important;border-color:#50635c!important}
html[data-theme="dark"] .option.is-correct{background:#183027!important;border-color:#5a8d76!important;color:#d3eadf!important}
html[data-theme="dark"] .option.is-wrong{background:#321f1d!important;border-color:#a96962!important;color:#f0cbc6!important}
html[data-theme="dark"] .answer-choice-summary{background:#17252c!important;border-color:#314752!important;color:#d8e4df!important}
html[data-theme="dark"] .question.is-answered .answer{background:#14231d!important;border-color:#2d493d!important;border-left-color:#6d9b84!important}
html[data-theme="dark"] .question.is-answered .explain-row{background:#172229!important;border-color:#2f414a!important}
html[data-theme="dark"] .question.is-answered .wrong-row{background:#2a1d1b!important;border-color:#4a302d!important}
html[data-theme="dark"] .question.is-answered .vocab-line{background:#292317!important;border-color:#4a4026!important;border-left-color:#ad9250!important}
html[data-theme="dark"] .related ul{background:#121817!important;border-color:#303c38!important}
html[data-theme="dark"] .related li{border-color:#303c38!important}
html[data-theme="dark"] .result-summary{border-color:#3a4b52!important}
html[data-theme="dark"] .quiz-dock{background:rgba(16,22,21,.985)!important;border-color:#34413d!important}
html[data-theme="dark"] .quiz-dock .dock-control{background:#141b19!important;color:#b7c8c1!important;border-color:#303d38!important}
html[data-theme="dark"] .quiz-dock .dock-next{background:#1a2b36!important;color:#9dcced!important}
@media(max-width:700px){
 body{background:#fff!important}
 .page{width:100%!important;padding:18px 14px calc(82px + env(safe-area-inset-bottom))!important}
 .article-head{padding:22px 16px 23px!important;background:linear-gradient(180deg,#f5f9fb 0,#fff 100%)!important}
 .question,.question.is-answered{padding:30px 2px 34px!important;background:transparent!important}
 .question+.question{padding-top:30px!important}
 .question::before{width:30px}
 .question.is-answered .answer{padding:14px 13px!important}
 .question.is-answered .explain-list{display:block!important}
 .question.is-answered .explain-row{padding:11px 12px!important;margin-top:8px!important}
 .question.is-answered .vocab-line{padding:11px 12px!important}
 .related{padding-top:28px!important}
 html[data-theme="dark"] body{background:#101514!important}
 html[data-theme="dark"] .article-head{background:linear-gradient(180deg,#15222a 0,#101514 100%)!important}
}


/* source: v8-final-fixes */


@media(min-width:768px){
  .site-nav-inner{width:min(1180px,calc(100% - 64px))!important}
  .site-links{margin-left:auto!important}
  .theme-toggle{margin-left:18px!important}
  .page{width:min(1120px,calc(100% - 56px))!important}
}
/* One continuous exercise axis: color is local information, not giant panels. */
body{background:#f5f7f8!important}
.article-head{background:linear-gradient(90deg,#f2f7fa 0,#f9fbfc 54%,#fff 100%)!important;border:0!important;border-top:3px solid #7fa4bc!important;border-bottom:1px solid #dbe3e6!important}
.quiz{background:transparent!important}
.question,.question.is-answered{background:transparent!important;border:0!important;border-bottom:1px solid #d9e1e4!important;margin:0!important;padding-left:4px!important;padding-right:4px!important}
.question::before{background:#a9c4d4!important}
.result-summary,.related{background:transparent!important;border-left:0!important;border-right:0!important;margin-left:4px!important;margin-right:4px!important;padding-left:0!important;padding-right:0!important}
.related ul{background:transparent!important;border-top-color:#d8e1e4!important}
.related li{border-bottom-color:#d8e1e4!important}
.related a{padding-left:0!important;padding-right:0!important}
.related a:hover{background:#eef4f7!important}
html[data-theme="dark"]{
  --paper:#121817!important;
  --ink:#e8efec!important;
  --muted:#b1bdb8!important;
  --faint:#8f9c97!important;
  --line:#303b38!important;
  --line-strong:#43504c!important;
  --accent:#8fc5e8!important;
  --accent-soft:#1b303c!important;
}
html[data-theme="dark"] body{background:#121817!important;color:#e8efec!important}
html[data-theme="dark"] .site-nav{background:rgba(17,23,22,.97)!important;border-bottom-color:#34413d!important}
html[data-theme="dark"] .site-links a{color:#b7c2bd!important}
html[data-theme="dark"] .site-links .nav-japanese[aria-current="page"]{color:#9dcced!important}
html[data-theme="dark"] .theme-toggle,
html[data-theme="dark"] .tool-btn,
html[data-theme="dark"] .icon-button{background:#171e1c!important;color:#dfe8e4!important;border-color:#46534f!important}
html[data-theme="dark"] .article-head{background:linear-gradient(90deg,#19242a 0,#171e1c 62%,#121817 100%)!important;border-top-color:#6e9ab6!important;border-bottom-color:#35423e!important}
html[data-theme="dark"] .article-head h1,
html[data-theme="dark"] .question-text,
html[data-theme="dark"] .answer-head strong,
html[data-theme="dark"] .vocab-copy,
html[data-theme="dark"] .related h2,
html[data-theme="dark"] .related a{color:#e9f0ed!important}
html[data-theme="dark"] rt{color:#9ca9a4!important}
html[data-theme="dark"] .lead,
html[data-theme="dark"] .meta,
html[data-theme="dark"] .translation,
html[data-theme="dark"] .explain-row p,
html[data-theme="dark"] .vocab-gloss,
html[data-theme="dark"] .vocab-phrase-zh,
html[data-theme="dark"] .result-meta,
html[data-theme="dark"] .related-intro{color:#b7c3be!important}
html[data-theme="dark"] .question,html[data-theme="dark"] .question.is-answered{background:transparent!important;border-bottom-color:#34413d!important}
html[data-theme="dark"] .question::before{background:#52778c!important}
html[data-theme="dark"] .option{background:#171e1c!important;color:#e4ece8!important;border-color:#3a4743!important}
html[data-theme="dark"] .option:hover{background:#1c2522!important;border-color:#596a64!important}
html[data-theme="dark"] .option.is-correct{background:#1b3028!important;border-color:#65937d!important;color:#d5eadf!important}
html[data-theme="dark"] .option.is-wrong{background:#342321!important;border-color:#a96f68!important;color:#efc9c4!important}
html[data-theme="dark"] .answer-choice-summary{background:#1a2830!important;border-color:#354a55!important;color:#dce7e2!important}
html[data-theme="dark"] .question.is-answered .answer{background:#182820!important;border-color:#324a3f!important;border-left-color:#74a089!important}
html[data-theme="dark"] .question.is-answered .explain-row{background:#1b262b!important;border-color:#34464e!important;color:#d5dfda!important}
html[data-theme="dark"] .question.is-answered .wrong-row{background:#30211f!important;border-color:#503531!important}
html[data-theme="dark"] .question.is-answered .vocab-line{background:#2b261b!important;border-color:#4c432b!important;border-left-color:#b29a59!important}
html[data-theme="dark"] .result-summary{background:transparent!important;border-color:#3b4c53!important}
html[data-theme="dark"] .related{background:transparent!important;color:#e8efec!important}
html[data-theme="dark"] .related ul{background:transparent!important;border-top-color:#35423e!important}
html[data-theme="dark"] .related li{border-bottom-color:#35423e!important}
html[data-theme="dark"] .related a:hover{background:#1a2220!important}
html[data-theme="dark"] .quiz-dock{background:rgba(23,30,28,.985)!important;border-color:#3b4844!important;box-shadow:0 8px 24px rgba(0,0,0,.22)!important}
html[data-theme="dark"] .quiz-dock .dock-control{background:#171e1c!important;color:#bdc9c3!important;border-color:#35423e!important}
html[data-theme="dark"] .quiz-dock .dock-next,
html[data-theme="dark"] .quiz-dock .dock-control[aria-pressed="true"]{background:#1b303c!important;color:#a7d3ed!important}
html[data-theme="dark"] .footer{background:#0f1413!important;border-top-color:#2a3431!important}
@media(max-width:700px){
  body{background:#fff!important}
  html[data-theme="dark"] body{background:#121817!important}
}



/* 日／夜切換：預設日間，僅在使用者主動切換後記住選擇 */
.toggle-checkbox{position:absolute!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;opacity:0!important;overflow:hidden!important;clip-path:inset(50%)!important;white-space:nowrap!important}
.toggle-7-label{width:32px;height:32px;flex:0 0 32px;border:1px solid #dbe1de;display:flex;align-items:center;justify-content:center;position:relative;cursor:pointer;transition:border-color .35s ease,background-color .35s ease;color:#17211f;background:transparent}.toggle-7-label::before{content:"";position:absolute;inset:-6px}
.toggle-7-label:hover{background:#f7f9f8;border-color:#c8d1cd}
.toggle-checkbox:focus-visible + .toggle-7-label{outline:3px solid rgba(33,79,119,.24);outline-offset:3px}
.t7-core{width:15px;height:15px;border:1.5px solid currentColor;border-radius:50%;position:relative;transition:all .5s cubic-bezier(.4,0,.2,1);box-shadow:inset 0 0 0 0 currentColor}
.t7-rays{position:absolute;width:100%;height:100%;display:flex;align-items:center;justify-content:center;transition:transform .5s,opacity .5s}
.t7-ray{position:absolute;width:1px;height:6px;background-color:currentColor;transition:all .5s}
.t7-r1{transform:translateY(-10px)}.t7-r2{transform:translateY(10px)}.t7-r3{transform:translateX(-10px)}.t7-r4{transform:translateX(10px)}
#toggle-7:checked + .toggle-7-label .t7-rays,html[data-theme="dark"] .toggle-7-label .t7-rays{opacity:0;transform:rotate(45deg) scale(.5)}
#toggle-7:checked + .toggle-7-label .t7-core,html[data-theme="dark"] .toggle-7-label .t7-core{border-color:transparent;transform:rotate(-25deg);box-shadow:inset 6px -4px 0 0 currentColor}
html[data-theme="dark"] .toggle-7-label{border-color:#3b4844;color:#e8efec;background:#141b19}
html[data-theme="dark"] .toggle-7-label:hover{background:#18211f;border-color:#52615c}
@media(max-width:767px){.toggle-7-label{width:30px;height:30px;flex-basis:30px}.toggle-7-label::before{inset:-7px}.t7-core{width:14px;height:14px}.t7-ray{height:4px}.t7-r1{transform:translateY(-9px)}.t7-r2{transform:translateY(9px)}.t7-r3{transform:translateX(-9px)}.t7-r4{transform:translateX(9px)}}
@media(min-width:768px){.site-links + .toggle-checkbox + .toggle-7-label{margin-left:18px}.site-nav.reading-mode .grammar-header-links + .site-links + .toggle-checkbox + .toggle-7-label{margin-left:16px}}



/* v9：作答後採單一直式閱讀，不重複顯示正解，也不讓解析左右分欄 */
.answer-choice-summary{display:flex!important;align-items:center!important;gap:10px 16px!important;flex-wrap:wrap!important;margin-top:12px!important;padding:10px 12px!important;background:#f1f6f9!important;border:1px solid #d6e3ea!important;color:#455650!important}
.answer-choice-summary[hidden]{display:none!important}
.summary-selected{font-weight:750}.summary-selected.is-correct{color:#1f6b52}.summary-correct{font-weight:750;color:#214f77}.summary-correct[hidden]{display:none!important}.summary-toggle{margin-left:auto!important}
.question.is-answered .answer{margin-top:12px!important;padding:0!important;border:0!important;border-left:0!important;background:transparent!important}
.question.is-answered .answer-head{display:none!important}
.answer.is-peek .answer-head{display:flex!important}
.question.is-answered .translation{margin:0!important;padding:13px 15px!important;border-left:3px solid #83a792!important;background:#f5faf7!important;color:#273630!important;font-size:16px!important;line-height:1.72!important}
.question.is-answered .explain-list{display:block!important;grid-template-columns:none!important;margin-top:10px!important;border:0!important;background:transparent!important}
.question.is-answered .explain-row{display:block!important;margin:0!important;padding:13px 15px!important;border:1px solid #d9e5eb!important;background:#f4f8fb!important}
.question.is-answered .explain-row+.explain-row{margin-top:9px!important;padding-left:15px!important;border-left:1px solid #eadbd7!important}
.question.is-answered .wrong-row{background:#fff7f5!important;border-color:#eadbd7!important}
.question.is-answered .explain-label{display:block!important;margin:0 0 5px!important;color:#56768a!important;font-size:11px!important;font-weight:850!important;letter-spacing:.08em!important}
.question.is-answered .wrong-row .explain-label{color:#98625c!important}
.question.is-answered .explain-row p{font-size:14px!important;line-height:1.72!important;color:#44524d!important}
.question.is-answered .vocab-line{margin-top:9px!important;padding:14px 16px!important;background:#fffaf0!important;border:1px solid #eadfca!important;border-left:3px solid #c9aa63!important}
@media(min-width:768px){
  .question.is-answered{padding-bottom:46px!important}
  .question.is-answered .answer-choice-summary{max-width:none!important}
}
@media(max-width:700px){
  .answer-choice-summary{display:grid!important;grid-template-columns:1fr auto!important;gap:5px 10px!important}
  .summary-selected,.summary-correct{grid-column:1}
  .summary-toggle{grid-column:2;grid-row:1 / span 2;align-self:center;margin-left:0!important}
  .question.is-answered .translation{padding:11px 12px!important;font-size:15px!important}
  .question.is-answered .explain-row,.question.is-answered .vocab-line{padding:12px!important}
}
html[data-theme="dark"] .answer-choice-summary{background:#1a2830!important;border-color:#354a55!important;color:#dce7e2!important}
html[data-theme="dark"] .summary-selected.is-correct{color:#9fd2b9!important}
html[data-theme="dark"] .summary-correct{color:#9dcced!important}
html[data-theme="dark"] .question.is-answered .answer{background:transparent!important;border:0!important}
html[data-theme="dark"] .question.is-answered .translation{background:#16251f!important;border-left-color:#6d9b84!important;color:#dce7e2!important}
html[data-theme="dark"] .question.is-answered .explain-row{background:#172229!important;border-color:#2f414a!important}
html[data-theme="dark"] .question.is-answered .wrong-row{background:#2a1d1b!important;border-color:#4a302d!important}
html[data-theme="dark"] .question.is-answered .explain-row p{color:#c4cfca!important}
html[data-theme="dark"] .question.is-answered .vocab-line{background:#292317!important;border-color:#4a4026!important;border-left-color:#ad9250!important}



/* source: quiz-options-vertical */

@media(min-width:768px){.options{grid-template-columns:1fr!important;max-width:860px!important}}


/* source: n2-review-v8-final */

/* =========================================================
   N2 REVIEW v8 — desktop human-reading system
   - Main section titles centered
   - Long content stays left-aligned inside a centered reading axis
   - Short decision modules may center as a whole
   - Related sections stay left-aligned and visually lighter
   ========================================================= */
@media (min-width:901px){
  :root{
    --v7-read:860px;
    --v7-section:940px;
    --v7-hero:1000px;
    --v7-wide:1180px;
  }

  .page{
    width:min(var(--v7-wide),calc(100% - 64px))!important;
    margin-inline:auto!important;
    padding-top:22px!important;
    padding-bottom:44px!important;
  }

  /* ---------- Page hero ---------- */
  .article-head{
    width:min(100%,var(--v7-hero))!important;
    margin-inline:auto!important;
    padding:20px 0 18px!important;
    text-align:center!important;
  }
  .article-head h1{
    margin:6px 0 7px!important;
    font-size:clamp(36px,3vw,48px)!important;
    line-height:1.18!important;
  }
  .article-head .meaning{
    margin:4px auto 7px!important;
    max-width:860px!important;
  }
  .article-head .lead{
    margin:5px auto 8px!important;
    max-width:860px!important;
    line-height:1.62!important;
  }
  .article-head .meta{
    justify-content:center!important;
    margin-top:10px!important;
  }
  .article-head .toolbar,
  .article-head .article-tools{
    justify-content:center!important;
  }
  .quiz-intro{
    max-width:820px!important;
    margin:14px auto 0!important;
    padding:11px 14px!important;
    text-align:left!important;
  }

  /* ---------- Main section title system ---------- */
  .section{
    width:min(100%,var(--v7-section))!important;
    margin-inline:auto!important;
    padding:18px 0 20px!important;
  }
  .section-head{
    display:block!important;
    position:static!important;
    width:100%!important;
    margin:0 auto 10px!important;
    text-align:center!important;
  }
  .section > .section-kicker,
  .section-head .section-kicker{
    position:static!important;
    inset:auto!important;
    display:block!important;
    width:auto!important;
    max-width:none!important;
    margin:0 0 5px!important;
    padding:0!important;
    text-align:center!important;
    line-height:1.4!important;
    font-size:11px!important;
    letter-spacing:.09em!important;
    white-space:normal!important;
  }
  .section > h2,
  .section-head h2{
    display:block!important;
    width:100%!important;
    margin:0 auto 8px!important;
    padding:0!important;
    text-align:center!important;
    font-size:clamp(29px,2.25vw,37px)!important;
    line-height:1.2!important;
  }
  .section-intro{
    max-width:var(--v7-read)!important;
    margin:0 auto 10px!important;
    line-height:1.62!important;
  }

  /* ---------- Content axis ---------- */
  .section-panel,
  .compact-core,
  .form-list,
  .examples,
  .compare-stack,
  .compare-groups,
  .deep-copy,
  .note,
  .same-event,
  .quick-steps{
    width:min(100%,var(--v7-read))!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }

  /* Core should feel like the successful connection rows */
  .section-core .core-lead,
  .section-core .fact-grid{
    width:min(100%,var(--v7-read))!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }
  .section-core .core-lead,
  .compact-core .core-line{
    padding:7px 0 8px!important;
    margin:0 auto 8px!important;
    line-height:1.62!important;
  }
  .fact-grid,
  .compact-facts{
    display:block!important;
    border:0!important;
    background:transparent!important;
  }
  .fact-grid .fact,
  .compact-fact{
    display:grid!important;
    grid-template-columns:150px minmax(0,1fr)!important;
    align-items:center!important;
    gap:24px!important;
    min-height:0!important;
    padding:9px 0 10px!important;
    border:0!important;
    border-bottom:1px solid var(--line)!important;
    background:transparent!important;
  }
  .fact-grid .fact:first-child,
  .compact-fact:first-child{
    border-top:1px solid var(--line)!important;
  }
  .fact-label,
  .compact-fact > span{
    margin:0!important;
    color:var(--faint)!important;
    font-size:11px!important;
    font-weight:800!important;
  }
  .fact-value,
  .compact-fact > strong{
    margin:0!important;
    line-height:1.55!important;
  }

  /* Connection rows are the reference density */
  .form-row{
    min-height:0!important;
    padding:10px 0 11px!important;
    gap:22px!important;
  }
  .form-label{align-self:center!important}
  .form-value{line-height:1.6!important}

  /* ---------- Comparison: no giant cards ---------- */
  #compare .compare-stack,
  #compare .compare-groups{
    width:min(100%,var(--v7-read))!important;
    margin-inline:auto!important;
    padding:0!important;
    background:transparent!important;
    border:0!important;
  }
  #compare .compare-grammar{
    position:relative!important;
    margin:0!important;
    padding:11px 0 12px 14px!important;
    border:0!important;
    border-bottom:1px solid var(--line)!important;
    background:transparent!important;
    box-shadow:none!important;
  }
  #compare .compare-grammar:first-child{border-top:1px solid var(--line)!important}
  #compare .compare-grammar::before{
    content:"";
    position:absolute;
    left:0;
    top:14px;
    bottom:14px;
    width:3px;
    background:#8d9aa0;
  }
  #compare .compare-a::before{background:#b68a58}
  #compare .compare-b::before{background:#5f8fab}
  #compare .compare-c::before{background:#6f927e}
  #compare .compare-grammar h3{
    margin:0 0 5px!important;
    font-size:22px!important;
    line-height:1.35!important;
  }
  #compare .compare-a h3{color:#9a6734!important}
  #compare .compare-b h3{color:#376f8e!important}
  #compare .compare-c h3{color:#587e69!important}
  #compare .compare-detail{
    display:grid!important;
    grid-template-columns:72px minmax(0,1fr)!important;
    column-gap:18px!important;
    align-items:start!important;
    margin:0!important;
    padding:4px 0!important;
    background:transparent!important;
    border:0!important;
  }
  #compare .compare-detail > span{
    grid-column:1!important;
    margin:1px 0 0!important;
    color:var(--faint)!important;
    font-size:11px!important;
    font-weight:850!important;
    line-height:1.45!important;
  }
  #compare .compare-detail > p{
    grid-column:2!important;
    margin:0 0 3px!important;
    line-height:1.58!important;
  }
  #compare .compare-example{
    font-weight:700!important;
  }
  #compare .compare-translation,
  #compare .compare-zh{
    color:var(--muted)!important;
    font-size:14px!important;
  }

  /* ---------- Study / Reading Focus ---------- */
  .study-focus{
    width:min(100%,var(--v7-read))!important;
    margin:20px auto 0!important;
    padding-top:14px!important;
  }
  .study-focus .eyebrow,
  .study-focus > h2{
    text-align:center!important;
  }
  .study-focus > h2{
    margin:4px 0 7px!important;
    font-size:27px!important;
  }
  .focus-grid,.focus-list{
    display:block!important;
    border:0!important;
    background:transparent!important;
  }
  .focus-item{
    padding:9px 0 10px!important;
    border:0!important;
    border-bottom:1px solid var(--line)!important;
    background:transparent!important;
  }

  /* ---------- Keigo short decision module ---------- */
  .keigo-flow{
    width:min(100%,760px)!important;
    margin-inline:auto!important;
  }
  .keigo-step{
    padding:10px 0 11px!important;
    text-align:center!important;
  }
  .keigo-step h3{margin:3px 0 5px!important}
  .keigo-arrow{
    margin:4px 0 7px!important;
    text-align:center!important;
    font-size:25px!important;
    font-weight:800!important;
    color:var(--blue)!important;
  }
  .keigo-step p{margin:3px 0!important}
  .keigo-key{
    margin:8px auto 0!important;
    text-align:center!important;
  }
  /* Long keigo reference rows stay left aligned on centered axis */
  #keigo .form-list{
    width:min(100%,var(--v7-read))!important;
    margin-inline:auto!important;
  }
  #keigo .form-row{
    grid-template-columns:220px minmax(0,1fr)!important;
    gap:28px!important;
  }

  /* ---------- Quiz / practice ---------- */
  .quiz{
    width:100%!important;
  }
  .question{
    width:min(100%,880px)!important;
    margin-inline:auto!important;
    padding:20px 0 25px!important;
    border-bottom:1px solid var(--line)!important;
  }
  .question + .question{padding-top:25px!important}
  .question-top{
    display:grid!important;
    grid-template-columns:46px minmax(0,1fr) 42px!important;
    gap:13px!important;
    align-items:start!important;
    margin:0 0 11px!important;
  }
  .question-top .question-number{
    grid-column:1!important;
    margin:0!important;
    padding-top:6px!important;
    align-self:start!important;
  }
  .question-top .question-text{
    grid-column:2!important;
    margin:0!important;
    max-width:none!important;
    font-size:21px!important;
    line-height:1.85!important;
  }
  .question-top .question-audio,
  .question-top .speak-question,
  .question-top .icon-button{
    grid-column:3!important;
    position:static!important;
    right:auto!important;
    top:auto!important;
    align-self:start!important;
    margin:0!important;
  }
  .options{
    width:min(100%,820px)!important;
    max-width:none!important;
    margin-inline:auto!important;
    gap:7px!important;
  }
  .option,.option-btn,.practice-option{
    min-height:47px!important;
    padding-top:8px!important;
    padding-bottom:8px!important;
  }

  /* Never let an answered question lose its explanation */
  .question .answer[hidden]{display:none!important}
  .question.is-answered .answer,
  .question.answered .answer{
    display:block!important;
    width:min(100%,820px)!important;
    max-width:820px!important;
    margin:11px auto 0!important;
  }
  .question.is-answered{padding-bottom:24px!important}
  .question.answered{padding-bottom:24px!important}
  .question.is-answered .answer-choice-summary,
  .question.answered .answer-summary{
    width:min(100%,820px)!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }
  .question.is-answered .translation,
  .question.is-answered .explain-row,
  .question.is-answered .vocab-line,
  .question.answered .answer-block{
    margin-left:0!important;
    margin-right:0!important;
  }
  .question.is-answered .options.is-collapsed{display:none!important}

  /* ---------- Reading ---------- */
  .reading-paper{
    width:min(100%,880px)!important;
    margin-inline:auto!important;
    padding:16px 19px!important;
  }
  .reading-paper .jp-article{
    font-size:17px!important;
    line-height:1.9!important;
  }

  /* ---------- Related: deliberately smaller and left-aligned ---------- */
  .related,
  .vocab-related{
    width:min(100%,820px)!important;
    margin:18px auto 0!important;
    padding:13px 0 14px!important;
    text-align:left!important;
  }
  .related .eyebrow,
  .vocab-related .eyebrow{
    margin-bottom:4px!important;
    font-size:11px!important;
    text-align:left!important;
  }
  .related h2,
  .vocab-related h2{
    margin:0 0 4px!important;
    font-size:24px!important;
    line-height:1.3!important;
    text-align:left!important;
  }
  .related p,
  .related-intro,
  .vocab-related p{
    margin:0 0 7px!important;
    font-size:13px!important;
    text-align:left!important;
  }
  .related ul,
  .vocab-related ul{
    margin-top:7px!important;
  }
  .related a,
  .vocab-related a{
    min-height:0!important;
    padding:9px 0!important;
    text-align:left!important;
  }
}

/* Mobile keeps comfortable reading; section titles remain stacked and collision-free. */
@media (max-width:900px){
  .section-head{
    display:block!important;
    position:static!important;
    text-align:center!important;
  }
  .section > .section-kicker,
  .section-head .section-kicker{
    position:static!important;
    inset:auto!important;
    width:auto!important;
    margin:0 0 5px!important;
    text-align:center!important;
  }
  .section > h2,
  .section-head h2{
    margin-top:0!important;
    text-align:center!important;
  }
  .question-top{
    display:grid!important;
    grid-template-columns:minmax(0,1fr) 40px!important;
    gap:7px 10px!important;
  }
  .question-top .question-number{grid-column:1!important;grid-row:1!important;margin:0!important}
  .question-top .question-audio,
  .question-top .speak-question,
  .question-top .icon-button{grid-column:2!important;grid-row:1!important;position:static!important}
  .question-top .question-text{grid-column:1 / -1!important;grid-row:2!important;margin:0!important}
  #compare .compare-detail{grid-template-columns:1fr!important;padding:5px 0!important}
  #compare .compare-detail > span,
  #compare .compare-detail > p{grid-column:1!important}
  #compare .compare-detail > span{margin-bottom:2px!important}
}
html[data-theme="dark"] #compare .compare-a h3{color:#d9ad77!important}
html[data-theme="dark"] #compare .compare-b h3{color:#8ec1df!important}
html[data-theme="dark"] #compare .compare-c h3{color:#8fbea2!important}


/* =========================================================
   v8 refinements
   ========================================================= */
@media (min-width:901px){
  :root{
    --v8-read:860px;
    --v8-book:820px;
    --v8-section:940px;
  }

  /* Reading index uses the same outer axis as the section below it. */
  .reading-index{
    width:min(100%,var(--v8-section))!important;
    margin-left:auto!important;
    margin-right:auto!important;
    padding-left:0!important;
    padding-right:0!important;
  }
  .reading-index a:first-child{padding-left:0!important}

  /* Connection boxes: keep compact size but give text breathing room from borders. */
  .section-connection .formula{
    padding-left:18px!important;
    padding-right:18px!important;
  }
  .section-connection .formula-type,
  .section-connection .formula-main,
  .section-connection .formula-examples{
    margin-left:0!important;
    margin-right:0!important;
  }
  .section-connection .note{
    margin-left:18px!important;
    margin-right:18px!important;
  }

  /* Focus + Related become one book-like tail axis. */
  .study-focus,
  .related,
  .vocab-related{
    width:min(100%,var(--v8-book))!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }
  .study-focus{
    padding-top:13px!important;
    padding-bottom:0!important;
  }
  .study-focus .focus-item{
    padding:10px 0 11px!important;
  }
  .study-focus .focus-item h3{
    max-width:720px!important;
    margin-bottom:4px!important;
    font-weight:760!important;
  }
  .study-focus .focus-item p{
    max-width:720px!important;
    line-height:1.62!important;
  }
  .study-focus .focus-item:nth-child(1) h3{color:#426f63!important}
  .study-focus .focus-item:nth-child(2) h3{color:#9a6f32!important}
  .study-focus .focus-item:nth-child(3) h3{color:#4e6f8c!important}

  .related,
  .vocab-related{
    margin-top:14px!important;
    border-top:1px solid var(--line)!important;
    padding-top:12px!important;
  }
  .related h2,
  .vocab-related h2{
    font-size:23px!important;
  }
  .related li,
  .vocab-related li{
    border-bottom:1px solid var(--line)!important;
  }
  .related a,
  .vocab-related a{
    padding:8px 0!important;
  }

  /* Desktop compare = compact table, not oversized panels. */
  .compare-table{
    width:min(100%,var(--v8-read))!important;
    margin:8px auto 0!important;
    border-collapse:collapse!important;
    table-layout:fixed!important;
    background:transparent!important;
    font-size:15px!important;
  }
  .compare-table th,
  .compare-table td{
    padding:10px 12px!important;
    border-bottom:1px solid var(--line)!important;
    vertical-align:top!important;
    text-align:left!important;
    line-height:1.58!important;
  }
  .compare-table thead th{
    border-top:1px solid var(--line)!important;
    font-size:17px!important;
    font-weight:800!important;
  }
  .compare-table-label{
    width:78px!important;
    color:var(--faint)!important;
    font-size:11px!important;
  }
  .compare-table tbody th{
    width:78px!important;
    color:var(--faint)!important;
    font-size:11px!important;
    font-weight:800!important;
  }
  .compare-head-1{
    color:#996431!important;
    background:rgba(182,138,88,.045)!important;
  }
  .compare-head-2{
    color:#376f8e!important;
    background:rgba(95,143,171,.045)!important;
  }
  .compare-table .jp-cell{
    font-weight:700!important;
  }
  .compare-table .zh-cell{
    color:var(--muted)!important;
    font-size:14px!important;
  }
  /* Existing vertical blocks are mobile fallback only when a table exists. */
  .compare-table + .compare-groups,
  .compare-table + .compare-stack{
    display:none!important;
  }

  /* Keep core information at the same comfortable density as FORM rows. */
  .section-core .fact-grid .fact{
    grid-template-columns:150px minmax(0,1fr)!important;
    padding-top:9px!important;
    padding-bottom:9px!important;
  }
}

@media (max-width:900px){
  .compare-table{display:none!important}
  .compare-table + .compare-groups,
  .compare-table + .compare-stack{
    display:block!important;
  }
}

html[data-theme="dark"] .study-focus .focus-item:nth-child(1) h3{color:#82b3a5!important}
html[data-theme="dark"] .study-focus .focus-item:nth-child(2) h3{color:#d5ad6a!important}
html[data-theme="dark"] .study-focus .focus-item:nth-child(3) h3{color:#8db1cf!important}
html[data-theme="dark"] .compare-head-1{color:#d9ad77!important;background:rgba(182,138,88,.06)!important}
html[data-theme="dark"] .compare-head-2{color:#8ec1df!important;background:rgba(95,143,171,.06)!important}


/* source: n2-shared-voice-style-v10 */

.n2-voice-setting{
  display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
  color:var(--muted,#6f7d79);font-size:12px
}
.n2-voice-setting label{font-weight:750;color:inherit}
.n2-voice-select{
  max-width:210px;min-width:112px;height:28px;
  border:1px solid var(--line,#d9e0de);border-radius:0;
  background:transparent;color:var(--text,#17211f);
  padding:2px 24px 2px 7px;font:inherit;cursor:pointer
}
.n2-voice-select:focus-visible{
  outline:2px solid color-mix(in srgb,var(--blue,#2f6f9f) 35%,transparent);
  outline-offset:2px
}
html[data-theme="dark"] .n2-voice-select,
body.dark-mode .n2-voice-select{
  background:#121817;color:#e8efed;border-color:#38413f
}
@media(max-width:700px){
  .n2-voice-setting{gap:4px}
  .n2-voice-select{max-width:142px;min-width:96px}
}


/* source: n2-book-reading-v12 */

/* =========================================================
   N2 v12 BOOK READING SYSTEM
   全頁書本式閱讀：中央版心、合理行長、穩定段距、同軸分隔
   ========================================================= */
@media (min-width: 901px){
  :root{
    --book-reading: 820px;
    --book-medium: 900px;
    --book-section: 940px;
    --book-wide: 1120px;
  }

  /* Page */
  .page{
    width:min(var(--book-wide),calc(100% - 64px))!important;
    margin-inline:auto!important;
    padding-bottom:48px!important;
  }

  /* Hero / title: visually centered, not oversized */
  .article-head{
    width:min(100%,960px)!important;
    margin-inline:auto!important;
    padding-top:24px!important;
    padding-bottom:18px!important;
  }
  .article-head h1{
    line-height:1.17!important;
    margin-top:6px!important;
    margin-bottom:7px!important;
  }
  .article-head .lead,
  .article-head .meaning{
    max-width:820px!important;
    margin-left:auto!important;
    margin-right:auto!important;
    line-height:1.68!important;
  }

  /* Section shell */
  .section{
    width:min(100%,var(--book-section))!important;
    margin-inline:auto!important;
    padding-top:18px!important;
    padding-bottom:20px!important;
  }
  .section-head{
    width:100%!important;
    margin:0 auto 10px!important;
  }
  .section-intro{
    width:min(100%,var(--book-reading))!important;
    margin-left:auto!important;
    margin-right:auto!important;
    line-height:1.68!important;
  }

  /* Long-form content uses a book reading width */
  .reading-paper,
  .reading-body,
  .article-body,
  .long-copy,
  .deep-copy,
  .section-copy,
  .section-panel,
  .study-focus,
  .related,
  .vocab-related{
    max-width:var(--book-reading)!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }

  /* Natural text measure */
  .reading-paper p,
  .reading-body p,
  .article-body p,
  .long-copy p,
  .section-copy p,
  .section-panel p,
  .focus-item p,
  .related p,
  .vocab-related p{
    line-height:1.82!important;
  }

  /* Book-like paragraph rhythm */
  .reading-paper p + p,
  .reading-body p + p,
  .article-body p + p,
  .long-copy p + p{
    margin-top:15px!important;
  }

  /* Ruby: close to base text, prevent awkward character spreading */
  ruby{
    ruby-position:over;
  }
  rt{
    font-size:.52em!important;
    line-height:1!important;
    color:var(--faint,#82908c)!important;
    letter-spacing:.02em!important;
  }
  ruby, ruby *{
    word-break:keep-all!important;
  }

  /* Inline words / grammar must not break in the middle */
  .grammar-name,
  .grammar-pattern,
  .word,
  .jp-term,
  .compare-column-title,
  [data-grammar]{
    word-break:keep-all!important;
    overflow-wrap:normal!important;
  }

  /* Short information rows: same density as FORM */
  .fact-grid .fact,
  .compact-fact,
  .form-row,
  .focus-item{
    min-height:0!important;
  }
  .fact-grid .fact,
  .compact-fact{
    padding-top:9px!important;
    padding-bottom:9px!important;
  }
  .form-row{
    padding-top:10px!important;
    padding-bottom:10px!important;
  }

  /* All left accent-line content keeps safe distance */
  .core-line,
  .quote,
  .note-line,
  .translation,
  .keigo-summary-line{
    padding-left:24px!important;
    box-sizing:border-box!important;
  }

  /* Tables */
  table{
    line-height:1.58!important;
  }
  .compare-table,
  .keigo-compare-table{
    max-width:860px!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }

  /* Study Focus + Related = one book tail */
  .study-focus,
  .related,
  .vocab-related{
    width:min(100%,var(--book-reading))!important;
  }
  .study-focus{
    padding-top:13px!important;
  }
  .study-focus .focus-item{
    padding:10px 0 11px!important;
  }
  .study-focus .focus-item h3,
  .study-focus .focus-item > strong{
    max-width:700px!important;
    margin-bottom:4px!important;
  }
  .study-focus .focus-item p{
    max-width:700px!important;
  }
  .related,
  .vocab-related{
    margin-top:14px!important;
    padding-top:12px!important;
    border-top:1px solid var(--line)!important;
  }
  .related h2,
  .vocab-related h2{
    font-size:23px!important;
    margin-bottom:4px!important;
  }
  .related a,
  .vocab-related a{
    padding-top:8px!important;
    padding-bottom:8px!important;
  }

  /* Reading article */
  .reading-paper{
    width:min(100%,860px)!important;
    padding:16px 20px!important;
  }
  .reading-paper .jp-article,
  .reading-paper .reading-text,
  .reading-paper p{
    font-size:19px!important;
    line-height:1.95!important;
    font-weight:430!important;
  }

  /* Keep semantic groups together */
  .reading-unit,
  .sentence-unit{
    break-inside:avoid;
  }
}

/* Mobile: keep comfortable but not huge */
@media (max-width:900px){
  .core-line,
  .quote,
  .note-line,
  .translation,
  .keigo-summary-line{
    padding-left:16px!important;
  }
  .reading-paper .jp-article,
  .reading-paper .reading-text,
  .reading-paper p{
    line-height:1.9!important;
  }
  rt{font-size:.5em!important}
}


/* source: quiz-659060241-reference-v13 */

/* =========================================================
   v13：題型答案結構以 659060241-PASS 為基準
   作答前／作答後永遠同一條閱讀軸，只做顯示隱藏，不改 width / left / margin
   ========================================================= */
@media(min-width:901px){
  .question{
    width:min(100%,880px)!important;
    margin:0 auto!important;
    padding:22px 0 24px!important;
    box-sizing:border-box!important;
    position:relative!important;
  }
  .question > .question-top,
  .question > .question-main{
    width:min(100%,820px)!important;
    margin-left:auto!important;
    margin-right:auto!important;
    box-sizing:border-box!important;
  }
  .question > .question-top{
    display:grid!important;
    grid-template-columns:44px minmax(0,1fr) 42px!important;
    gap:13px!important;
    align-items:start!important;
    margin-bottom:12px!important;
  }
  .question-top .question-number{
    grid-column:1!important;
    margin:0!important;
    padding-top:5px!important;
  }
  .question-top .question-text{
    grid-column:2!important;
    margin:0!important;
    min-width:0!important;
    max-width:none!important;
    line-height:1.8!important;
  }
  .question-top .speak-question,
  .question-top .question-audio,
  .question-top .icon-button{
    grid-column:3!important;
    position:static!important;
    margin:0!important;
    justify-self:end!important;
  }

  .question-main,
  .question-main > *,
  .question-main .options,
  .question-main .answer-choice-summary,
  .question-main .result-summary,
  .question-main .answer,
  .question-main .translation,
  .question-main .explain-list,
  .question-main .explain-row,
  .question-main .vocab-line,
  .question-main .answer-vocab{
    width:100%!important;
    max-width:none!important;
    margin-left:0!important;
    margin-right:0!important;
    box-sizing:border-box!important;
    left:auto!important;
    right:auto!important;
    transform:none!important;
  }
  .question-main .answer-choice-summary,
  .question-main .result-summary{
    margin-top:10px!important;
  }
  .question-main .answer{
    margin-top:11px!important;
  }

  /* answered state only changes visibility; never geometry */
  .question.answered,
  .question.is-answered{
    width:min(100%,880px)!important;
    margin-left:auto!important;
    margin-right:auto!important;
    padding-left:0!important;
    padding-right:0!important;
  }
  .question.answered > .question-top,
  .question.answered > .question-main,
  .question.is-answered > .question-top,
  .question.is-answered > .question-main{
    width:min(100%,820px)!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }

  /* separator stays on the same book axis */
  .question + .question{
    border-top:1px solid var(--line)!important;
  }
  .question + .question::before{display:none!important}
}
@media(max-width:900px){
  .question > .question-top,
  .question > .question-main{
    width:100%!important;
  }
  .question > .question-top{
    display:grid!important;
    grid-template-columns:minmax(0,1fr) 40px!important;
    gap:7px 10px!important;
  }
  .question-top .question-number{grid-column:1!important;grid-row:1!important}
  .question-top .speak-question,
  .question-top .question-audio,
  .question-top .icon-button{grid-column:2!important;grid-row:1!important}
  .question-top .question-text{grid-column:1/-1!important;grid-row:2!important}
}


/* source: quiz-v14-stable-reference */

/* 題型頁首：資訊左、操作右 */
@media(min-width:901px){
  .article-head .quiz-controls-row{
    width:min(100%,980px)!important;
    margin:13px auto 0!important;
    display:grid!important;
    grid-template-columns:minmax(0,1fr) auto!important;
    gap:24px!important;
    align-items:center!important;
  }
  .article-head .quiz-controls-row > .meta{
    display:flex!important;
    align-items:center!important;
    justify-content:flex-start!important;
    flex-wrap:wrap!important;
    gap:10px 14px!important;
    margin:0!important;
  }
  .article-head .quiz-controls-row > .toolbar,
  .article-head .quiz-controls-row > .actions,
  .article-head .quiz-controls-row > .quiz-toolbar{
    display:flex!important;
    align-items:center!important;
    justify-content:flex-end!important;
    flex-wrap:nowrap!important;
    gap:10px!important;
    margin:0!important;
  }
  .article-head .quiz-controls-row button{
    min-height:38px!important;
    padding:7px 12px!important;
  }

  /* 659060241-style stable axis */
  .question,
  .question.answered,
  .question.is-answered{
    width:min(100%,880px)!important;
    margin-left:auto!important;
    margin-right:auto!important;
    padding-left:0!important;
    padding-right:0!important;
    left:auto!important;
    right:auto!important;
    transform:none!important;
  }
  .question > .question-top,
  .question > .question-main{
    width:min(100%,820px)!important;
    margin-left:auto!important;
    margin-right:auto!important;
    left:auto!important;
    right:auto!important;
    transform:none!important;
  }
  .question-main,
  .question-main > *,
  .question-main .options,
  .question-main .answer,
  .question-main .answer-choice-summary,
  .question-main .result-summary,
  .question-main .translation,
  .question-main .explain-list,
  .question-main .explain-row,
  .question-main .vocab-line,
  .question-main .answer-vocab{
    width:100%!important;
    max-width:none!important;
    margin-left:0!important;
    margin-right:0!important;
    left:auto!important;
    right:auto!important;
    transform:none!important;
    box-sizing:border-box!important;
  }
}
@media(max-width:900px){
  .article-head .quiz-controls-row{display:block!important}
  .article-head .quiz-controls-row > .meta{
    display:flex!important;justify-content:flex-start!important;flex-wrap:wrap!important
  }
  .article-head .quiz-controls-row > .toolbar,
  .article-head .quiz-controls-row > .actions,
  .article-head .quiz-controls-row > .quiz-toolbar{
    display:flex!important;justify-content:flex-start!important;flex-wrap:wrap!important;
    gap:8px!important;margin-top:10px!important
  }
}


/* source: context-aware-tools-v15 */

/* =========================================================
   v15 CONTEXT-AWARE TOOL ROW
   - info only -> centered compact row
   - info + actions -> left info / right actions
   - long content -> auto gap reduction / wrap
   ========================================================= */
.context-row{
  width:min(100%,1120px);
  margin:14px auto 0;
  box-sizing:border-box;
}
.context-row.context-info-only{
  display:flex;
  justify-content:center;
  align-items:center;
}
.context-row.context-split{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  column-gap:clamp(18px,3vw,42px);
}
.context-row .context-info{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.4vw,18px);
  flex-wrap:wrap;
  min-width:0;
}
.context-row.context-info-only .context-info{
  justify-content:center;
}
.context-row.context-split .context-info{
  justify-content:flex-start;
}
.context-row .context-actions{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:10px;
  flex-wrap:nowrap;
  white-space:nowrap;
}
.context-row .n2-voice-setting{
  flex:0 0 auto;
}
.context-row .context-info > *{
  flex:0 0 auto;
}
.context-row .context-info .meta-item,
.context-row .context-info > span:not(.n2-voice-setting){
  white-space:nowrap;
}

/* If the row gets crowded, do not force a bad layout */
@media (max-width:1180px) and (min-width:901px){
  .context-row.context-split{
    column-gap:18px;
  }
  .context-row .context-info{
    gap:10px 12px;
  }
}
@media (max-width:980px) and (min-width:901px){
  .context-row.context-split{
    grid-template-columns:1fr;
    row-gap:10px;
  }
  .context-row.context-split .context-info{
    justify-content:center;
  }
  .context-row.context-split .context-actions{
    justify-content:center;
  }
}

@media(max-width:900px){
  .context-row,
  .context-row.context-info-only,
  .context-row.context-split{
    display:block;
    width:100%;
  }
  .context-row .context-info{
    justify-content:flex-start!important;
    gap:8px 12px;
  }
  .context-row .context-actions{
    justify-content:flex-start;
    flex-wrap:wrap;
    margin-top:10px;
    gap:8px;
  }
}


/* source: quiz-context-v15 */

@media(min-width:901px){
  .article-head .quiz-context-row{
    width:min(100%,980px);
  }
  .article-head .quiz-context-row .context-info{
    gap:10px 16px;
  }
  .article-head .quiz-context-row .context-actions button{
    min-height:40px!important;
    height:40px!important;
    padding:6px 12px!important;
    display:inline-flex!important;
    align-items:center!important;
  }
  .article-head .quiz-context-row .n2-voice-select{
    height:40px!important;
  }
  .article-head .quiz-context-row .n2-voice-setting{
    align-items:center!important;
  }
}


/* source: hero-prose-wrap-v15 */

@media(min-width:901px){
  .article-head .lead,
  .article-head .meaning,
  .article-head .sublead{
    max-width:900px!important;
    text-wrap:pretty!important;
    line-height:1.68!important;
  }
}


/* source: information-hierarchy-v17 */

/* =========================================================
   v17 N2 INFORMATION / ACTION SYSTEM
   Rule update:
   - Voice / meta / actions must stay on the SAME LINE on desktop when possible.
   - If left/right areas take more width, low-contrast meta text gets SMALLER first.
   - Only collapse to multi-line on genuinely narrow screens.
   ========================================================= */

.context-row{ container-type:inline-size; }

/* muted informational text */
.context-meta-group{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex-wrap:nowrap;
  gap:clamp(8px,1.1vw,16px);
  min-width:0;
  white-space:nowrap;
  font-size:clamp(.86rem,.76rem + .22vw,.98rem);
  line-height:1.35;
}
.context-meta-item{
  color:#8a9692!important;
  font-weight:450!important;
  white-space:nowrap;
  font-size:inherit!important;
}

/* keep voice control readable */
.context-row .n2-voice-setting{
  color:#53615d!important;
  font-weight:650!important;
  white-space:nowrap!important;
}
.context-row .n2-voice-select{
  color:var(--text,#17211f)!important;
  height:40px!important;
}

/* split rows: left voice + center muted info + right actions */
.context-row.context-split{
  display:grid!important;
  grid-template-columns:minmax(max-content,auto) minmax(0,1fr) auto!important;
  align-items:center!important;
  column-gap:clamp(14px,2.1vw,30px)!important;
}
.context-row.context-split .context-info{
  display:contents!important;
}
.context-row.context-split .n2-voice-setting{
  justify-self:start!important;
  min-width:max-content;
}
.context-row.context-split .context-meta-group{
  justify-self:center!important;
  max-width:100%;
}
.context-row.context-split .context-actions{
  justify-self:end!important;
  display:inline-flex!important;
  align-items:center!important;
  flex-wrap:nowrap!important;
  gap:clamp(10px,1vw,14px)!important;
}

/* info-only rows remain compact and centered */
.context-row.context-info-only .context-info{
  display:flex!important;
  justify-content:center!important;
  align-items:center!important;
  flex-wrap:nowrap!important;
  gap:clamp(10px,1.2vw,18px)!important;
}
.context-row.context-info-only .context-meta-group{
  justify-content:center!important;
}

.context-row .context-actions button,
.context-row .context-actions a{
  min-height:40px!important;
  display:inline-flex!important;
  align-items:center!important;
  justify-content:center!important;
  box-sizing:border-box!important;
  white-space:nowrap!important;
}

/* Step down metadata first before breaking the row */
@container (max-width: 1180px){
  .context-row.context-split .context-meta-group{
    font-size:.92rem!important;
    gap:12px!important;
  }
}
@container (max-width: 1100px){
  .context-row.context-split .context-meta-group{
    font-size:.88rem!important;
    gap:10px!important;
  }
}
@container (max-width: 1000px){
  .context-row.context-split .context-meta-group{
    font-size:.84rem!important;
    gap:8px!important;
  }
}
@container (max-width: 940px){
  .context-row.context-split{
    grid-template-columns:minmax(max-content,auto) minmax(0,1fr)!important;
    row-gap:10px!important;
  }
  .context-row.context-split .context-actions{
    grid-column:1 / -1!important;
    justify-self:end!important;
  }
}

/* only on narrow devices allow natural stacking */
@media(max-width:900px){
  .context-row.context-split{
    grid-template-columns:1fr!important;
    row-gap:10px!important;
  }
  .context-row.context-split .context-info,
  .context-row.context-split .context-actions{
    display:block!important;
  }
  .context-row.context-split .context-actions{
    justify-self:stretch!important;
  }
  .context-row .n2-voice-setting{ display:block!important; }
  .context-row .context-meta-group{
    display:flex!important;
    flex-wrap:wrap!important;
    justify-content:flex-start!important;
    margin-top:8px!important;
    font-size:.92rem!important;
    gap:8px 12px!important;
    white-space:normal;
  }
  .context-row .context-actions{
    margin-top:10px!important;
    justify-content:flex-start!important;
    flex-wrap:wrap!important;
  }
}

html[data-theme="dark"] .context-meta-item,
body.dark-mode .context-meta-item{
  color:#98a4a0!important;
}


/* source: quiz-context-v16 */

@media(min-width:1041px){
  .article-head .quiz-context-row{
    width:min(100%,980px)!important;
  }
  .article-head .quiz-context-row .context-actions{
    height:40px!important;
  }
}


/* source: hero-prose-v16 */

@media(min-width:901px){
  .article-head .lead,
  .article-head .meaning,
  .article-head .sublead{
    max-width:920px!important;
    text-wrap:pretty!important;
    line-height:1.68!important;
  }
}


/* source: safe-tool-row-v18 */

/* =========================================================
   v18 SAFE TOOL ROW
   confirmed rule:
   - desktop keeps one row when possible
   - left/right controls never touch the page frame
   - center muted metadata shrinks first
   ========================================================= */

@media(min-width:901px){
  .context-row{
    box-sizing:border-box!important;
    padding-left:30px!important;
    padding-right:30px!important;
    padding-top:13px!important;
    padding-bottom:13px!important;
  }

  .context-row.context-split{
    width:min(100%,1120px)!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }

  .context-row.context-info-only{
    width:min(100%,980px)!important;
    margin-left:auto!important;
    margin-right:auto!important;
  }

  /* left functional group */
  .context-row.context-split .n2-voice-setting{
    margin-left:0!important;
    padding-left:0!important;
  }

  /* right action group */
  .context-row.context-split .context-actions{
    margin-right:0!important;
    padding-right:0!important;
  }

  /* muted center info yields space first */
  .context-row.context-split .context-meta-group{
    min-width:0!important;
    max-width:100%!important;
    overflow:hidden!important;
    text-overflow:clip!important;
  }

  .context-row.context-split .context-meta-item{
    font-size:clamp(.80rem,.72rem + .18vw,.92rem)!important;
  }
}

/* Medium desktop: keep the row, compress metadata before wrapping */
@media(min-width:901px) and (max-width:1120px){
  .context-row{
    padding-left:24px!important;
    padding-right:24px!important;
  }
  .context-row.context-split{
    column-gap:16px!important;
  }
  .context-row.context-split .context-meta-group{
    gap:8px!important;
    font-size:.82rem!important;
  }
}

/* Mobile/tablet: smaller safe edge, natural wrapping remains allowed */
@media(max-width:900px){
  .context-row{
    box-sizing:border-box!important;
    padding-left:16px!important;
    padding-right:16px!important;
    padding-top:10px!important;
    padding-bottom:10px!important;
  }
}


/* source: page-context-classification-v19 */

/* =========================================================
   v19 PAGE-CONTEXT CLASSIFICATION
   A. content-context-row:
      grammar / reading / compare / light practice info
      -> compact centered single line
   B. operation-context-row:
      vocabulary / heavy quiz controls
      -> left info + center muted metadata + right actions
   ========================================================= */

/* A — content pages: compact, centered, never spread to page edges */
@media(min-width:901px){
  .article-head .content-context-row{
    width:min(100%,900px)!important;
    margin:14px auto 0!important;
    padding:11px 20px!important;
    display:flex!important;
    justify-content:center!important;
    align-items:center!important;
    box-sizing:border-box!important;
  }
  .article-head .content-context-row > .context-info{
    display:flex!important;
    justify-content:center!important;
    align-items:center!important;
    flex-wrap:nowrap!important;
    gap:clamp(10px,1.4vw,18px)!important;
    min-width:0!important;
  }
  .article-head .content-context-row .n2-voice-setting{
    flex:0 0 auto!important;
  }
  .article-head .content-context-row .context-meta-group{
    display:inline-flex!important;
    justify-content:center!important;
    align-items:center!important;
    flex-wrap:nowrap!important;
    gap:clamp(9px,1.15vw,15px)!important;
    font-size:clamp(.84rem,.78rem + .15vw,.94rem)!important;
    white-space:nowrap!important;
  }
  .article-head .content-context-row .content-inline-action{
    flex:0 0 auto!important;
    min-height:36px!important;
    padding:6px 11px!important;
    display:inline-flex!important;
    align-items:center!important;
    justify-content:center!important;
    white-space:nowrap!important;
  }
}

/* Narrow desktop: shrink muted information first, but stay centered */
@media(min-width:901px) and (max-width:1040px){
  .article-head .content-context-row{
    width:min(100%,860px)!important;
    padding-left:16px!important;
    padding-right:16px!important;
  }
  .article-head .content-context-row > .context-info{
    gap:9px!important;
  }
  .article-head .content-context-row .context-meta-group{
    font-size:.82rem!important;
    gap:8px!important;
  }
}

/* B — heavy operation pages keep v18 safety edges */
@media(min-width:901px){
  .article-head .operation-context-row{
    width:min(100%,1120px)!important;
    padding-left:30px!important;
    padding-right:30px!important;
    padding-top:13px!important;
    padding-bottom:13px!important;
    box-sizing:border-box!important;
  }
}

/* Mobile: both categories can wrap naturally */
@media(max-width:900px){
  .article-head .content-context-row,
  .article-head .operation-context-row{
    width:100%!important;
    padding:10px 16px!important;
    box-sizing:border-box!important;
  }
  .article-head .content-context-row > .context-info{
    display:flex!important;
    justify-content:flex-start!important;
    flex-wrap:wrap!important;
    gap:8px 12px!important;
  }
}


/* source: all-center-compact-v20 */

/* =========================================================
   v20 ALL PAGES = CENTER COMPACT
   - no left/right split
   - voice + muted info + actions live in one centered cluster
   - desktop prefers one line
   - if content is too long, shrink muted info / spacing first
   - only then allow a centered wrap
   ========================================================= */

@media(min-width:901px){
  .article-head .center-compact-row{
    width:min(100%,1180px)!important;
    margin:14px auto 0!important;
    padding:11px 24px!important;
    box-sizing:border-box!important;
    display:flex!important;
    justify-content:center!important;
    align-items:center!important;
  }

  .article-head .center-compact-row > .context-info{
    display:flex!important;
    justify-content:center!important;
    align-items:center!important;
    flex-wrap:wrap!important;
    gap:10px 14px!important;
    width:auto!important;
    max-width:100%!important;
    min-width:0!important;
    margin:0 auto!important;
  }

  .article-head .center-compact-row .n2-voice-setting{
    flex:0 0 auto!important;
    margin:0 4px 0 0!important;
    color:#53615d!important;
    font-weight:650!important;
    white-space:nowrap!important;
  }

  .article-head .center-compact-row .n2-voice-select{
    height:38px!important;
    max-width:260px!important;
  }

  .article-head .center-compact-row .context-meta-group{
    display:inline-flex!important;
    justify-content:center!important;
    align-items:center!important;
    flex-wrap:nowrap!important;
    gap:10px 14px!important;
    margin:0!important;
    color:#8a9692!important;
    font-size:clamp(.82rem,.76rem + .16vw,.92rem)!important;
    line-height:1.35!important;
    white-space:nowrap!important;
  }

  .article-head .center-compact-row .context-meta-item{
    color:#8a9692!important;
    font-weight:450!important;
    font-size:inherit!important;
    white-space:nowrap!important;
  }

  .article-head .center-compact-row .center-compact-action,
  .article-head .center-compact-row .content-inline-action{
    flex:0 0 auto!important;
    min-height:38px!important;
    padding:6px 11px!important;
    margin:0!important;
    box-sizing:border-box!important;
    display:inline-flex!important;
    align-items:center!important;
    justify-content:center!important;
    white-space:nowrap!important;
  }
}

/* Medium desktop: compress metadata before wrapping */
@media(min-width:901px) and (max-width:1180px){
  .article-head .center-compact-row{
    width:min(100%,1080px)!important;
    padding-left:18px!important;
    padding-right:18px!important;
  }
  .article-head .center-compact-row > .context-info{
    gap:8px 10px!important;
  }
  .article-head .center-compact-row .context-meta-group{
    gap:8px 10px!important;
    font-size:.80rem!important;
  }
  .article-head .center-compact-row .center-compact-action,
  .article-head .center-compact-row .content-inline-action{
    padding-left:9px!important;
    padding-right:9px!important;
  }
}

/* Smaller desktop / large tablet: still centered compact, wrapping is centered */
@media(min-width:901px) and (max-width:1020px){
  .article-head .center-compact-row > .context-info{
    max-width:920px!important;
  }
  .article-head .center-compact-row .context-meta-group{
    font-size:.78rem!important;
  }
}

/* Mobile */
@media(max-width:900px){
  .article-head .center-compact-row{
    width:100%!important;
    margin:12px auto 0!important;
    padding:10px 16px!important;
    box-sizing:border-box!important;
  }
  .article-head .center-compact-row > .context-info{
    display:flex!important;
    justify-content:center!important;
    align-items:center!important;
    flex-wrap:wrap!important;
    gap:8px!important;
  }
  .article-head .center-compact-row .context-meta-group{
    display:flex!important;
    justify-content:center!important;
    align-items:center!important;
    flex-wrap:wrap!important;
    gap:7px 10px!important;
    font-size:.86rem!important;
    margin:0!important;
  }
  .article-head .center-compact-row .n2-voice-setting{
    display:inline-flex!important;
    justify-content:center!important;
  }
}

/* dark mode muted information */
html[data-theme="dark"] .center-compact-row .context-meta-item,
body.dark-mode .center-compact-row .context-meta-item{
  color:#98a4a0!important;
}


/* source: desktop-single-line-v21 */

/* =========================================================
   v21 DESKTOP SINGLE-LINE COMPACT ROW
   Confirmed:
   - desktop: NEVER wrap
   - long content shrinks in this order:
     muted metadata -> gaps -> voice select width -> button padding/font
   - tablet/mobile may wrap naturally
   ========================================================= */

@media(min-width:1024px){
  .article-head .center-compact-row{
    width:min(100%,1220px)!important;
    margin:14px auto 0!important;
    padding:10px 18px!important;
    box-sizing:border-box!important;
    display:flex!important;
    justify-content:center!important;
    align-items:center!important;
    overflow:visible!important;
  }

  .article-head .center-compact-row > .context-info{
    display:flex!important;
    justify-content:center!important;
    align-items:center!important;
    flex-wrap:nowrap!important;
    white-space:nowrap!important;
    gap:8px 11px!important;
    width:max-content!important;
    max-width:100%!important;
    min-width:0!important;
    margin:0 auto!important;
  }

  /* Voice group stays readable but can become narrower. */
  .article-head .center-compact-row .n2-voice-setting{
    display:inline-flex!important;
    align-items:center!important;
    flex:0 1 auto!important;
    min-width:0!important;
    margin:0 2px 0 0!important;
    font-size:13px!important;
    white-space:nowrap!important;
  }
  .article-head .center-compact-row .n2-voice-select{
    width:clamp(180px,19vw,250px)!important;
    max-width:250px!important;
    min-width:170px!important;
    height:38px!important;
    font-size:13px!important;
    padding-left:8px!important;
    padding-right:24px!important;
  }

  /* Muted metadata gives up space first. */
  .article-head .center-compact-row .context-meta-group{
    display:inline-flex!important;
    align-items:center!important;
    justify-content:center!important;
    flex-wrap:nowrap!important;
    white-space:nowrap!important;
    gap:8px 11px!important;
    margin:0!important;
    min-width:0!important;
    font-size:12.5px!important;
    line-height:1.2!important;
  }
  .article-head .center-compact-row .context-meta-item{
    font-size:inherit!important;
    white-space:nowrap!important;
  }

  /* Actions stay on the same line. */
  .article-head .center-compact-row .center-compact-action,
  .article-head .center-compact-row .content-inline-action{
    flex:0 0 auto!important;
    white-space:nowrap!important;
    min-height:38px!important;
    height:38px!important;
    padding:5px 9px!important;
    font-size:13px!important;
    line-height:1!important;
    margin:0!important;
  }
}

/* Normal desktop */
@media(min-width:1180px){
  .article-head .center-compact-row > .context-info{
    gap:9px 13px!important;
  }
  .article-head .center-compact-row .context-meta-group{
    font-size:13px!important;
    gap:9px 13px!important;
  }
  .article-head .center-compact-row .center-compact-action,
  .article-head .center-compact-row .content-inline-action{
    padding-left:10px!important;
    padding-right:10px!important;
    font-size:13.5px!important;
  }
}

/* Crowded desktop: shrink, still NEVER wrap */
@media(min-width:1024px) and (max-width:1179px){
  .article-head .center-compact-row{
    padding-left:12px!important;
    padding-right:12px!important;
  }
  .article-head .center-compact-row > .context-info{
    gap:6px 8px!important;
  }
  .article-head .center-compact-row .n2-voice-setting{
    font-size:12.5px!important;
  }
  .article-head .center-compact-row .n2-voice-select{
    width:clamp(165px,18vw,205px)!important;
    min-width:160px!important;
    font-size:12.5px!important;
  }
  .article-head .center-compact-row .context-meta-group{
    font-size:11.5px!important;
    gap:6px 8px!important;
  }
  .article-head .center-compact-row .center-compact-action,
  .article-head .center-compact-row .content-inline-action{
    padding-left:7px!important;
    padding-right:7px!important;
    font-size:12px!important;
  }
}

/* Very narrow desktop: last compression step; still one line */
@media(min-width:1024px) and (max-width:1080px){
  .article-head .center-compact-row .n2-voice-select{
    width:155px!important;
    min-width:155px!important;
  }
  .article-head .center-compact-row .context-meta-group{
    font-size:11px!important;
    gap:5px 6px!important;
  }
  .article-head .center-compact-row .center-compact-action,
  .article-head .center-compact-row .content-inline-action{
    padding-left:6px!important;
    padding-right:6px!important;
    font-size:11.5px!important;
  }
}

/* Tablet / mobile: wrapping is allowed only here */
@media(max-width:1023px){
  .article-head .center-compact-row > .context-info{
    flex-wrap:wrap!important;
    justify-content:center!important;
  }
}


/* source: migration-validation-compat */
html,body{max-width:100%;overflow-x:clip}

/* validation migration compatibility: preserves source content inside PASS system */
.migrated-copy{font-size:1rem;line-height:1.9;color:var(--muted);max-width:100%}
.migrated-copy p{margin:0 0 1rem}.migrated-copy p:last-child{margin-bottom:0}
.migrated-copy strong{color:var(--ink);font-weight:750}
.migrated-copy ul,.migrated-copy ol{margin:.8rem 0 1rem;padding-left:1.35rem}
.migrated-copy li+li{margin-top:.5rem}.migrated-copy br{line-height:1.6}
.migrated-copy .migration-note,.migration-note{margin:18px 0 0;padding:15px 17px;border-left:3px solid var(--grammar);background:var(--panel-soft);border-radius:0 10px 10px 0}
.migration-compare-box{display:grid;gap:14px}.migration-compare-box>div{padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:var(--paper)}
.word-group-title{grid-column:1/-1;margin:10px 0 -2px;padding:0 0 8px;border-bottom:1px solid var(--line);font-weight:800;color:var(--ink);font-size:1rem;letter-spacing:.02em}
.migration-study,.migration-guide,.migration-disclaimer{width:min(100%,880px);margin:36px auto 0;padding:24px 0;border-top:1px solid var(--line)}
.migration-study h2,.migration-guide h2{margin:0 0 12px;font-size:1.2rem}.migration-study .migrated-copy,.migration-guide .migrated-copy{font-size:.96rem}
.migration-disclaimer{font-size:.86rem;color:var(--muted);padding-top:18px}
@media(max-width:700px){.migrated-copy{font-size:.96rem;line-height:1.85}.migration-study,.migration-guide,.migration-disclaimer{margin-top:28px;padding-top:20px}}


/* source: validation-refinements-v2 */

/* =========================================================
   7-page validation refinement v2
   confirmed refinements:
   - long vocabulary titles scale down by length
   - content returns to centered book-reading axis
   - quiz instructions use deliberate line breaks
   - reference disclaimer is short and low-emphasis
   ========================================================= */

/* Book-like centered reading axis */
.words-grid,
.study-focus,
.vocab-related,
.migration-guide,
.migration-disclaimer,
.related{
  width:min(100%,980px);
  margin-left:auto!important;
  margin-right:auto!important;
}

/* Long vocabulary titles: scale instead of filling the viewport */
@media (min-width:901px){
  .article-head h1.title-adaptive-long{
    font-size:clamp(42px,4.25vw,56px)!important;
    line-height:1.12!important;
    letter-spacing:-.035em!important;
    text-wrap:balance;
  }
  .article-head h1.title-adaptive-xlong{
    font-size:clamp(38px,3.85vw,50px)!important;
    line-height:1.14!important;
    letter-spacing:-.03em!important;
    text-wrap:balance;
  }
}

/* Quiz lead: Japanese / Chinese / count are deliberate lines */
.article-head .lead .lead-line{
  display:block;
}
.article-head .lead .lead-zh{
  margin-top:2px;
}
.article-head .lead .lead-count{
  display:block;
  margin-top:1px;
  color:#74807c;
  font-size:.88em;
  line-height:1.6;
}

/* Short, quiet reference information */
.migration-disclaimer{
  margin-top:34px!important;
  padding-top:20px!important;
  padding-bottom:0!important;
  border-top:1px solid #e1e6e3!important;
  color:#6f7b77!important;
}
.migration-disclaimer .reference-label{
  margin:0 0 7px!important;
  color:#7f8a86!important;
  font-size:12px!important;
  font-weight:700!important;
  letter-spacing:.06em!important;
}
.migration-disclaimer .reference-line{
  margin:0!important;
  font-size:13px!important;
  line-height:1.85!important;
}
.migration-disclaimer .reference-line + .reference-line{
  margin-top:4px!important;
}
.migration-disclaimer a{
  color:inherit!important;
  text-underline-offset:3px;
}

@media (max-width:900px){
  .words-grid,
  .study-focus,
  .vocab-related,
  .migration-guide,
  .migration-disclaimer,
  .related{
    width:100%;
  }
}


/* source: validation-refinements-v3 */

/* =========================================================
   7-page validation refinement v3
   confirmed:
   1. nuance key phrases = restrained warm underline
   2. remove redundant legacy part-of-speech metadata row
   3. reference info = one compact fixed small-text row on desktop
   ========================================================= */

/* Nuance emphasis: only marked key phrases, not whole paragraphs */
.nuance-key{
  position:relative;
  display:inline;
  font-weight:650;
  z-index:0;
  text-decoration:none!important;
  background:
    linear-gradient(
      to top,
      rgba(216,184,82,.32) 0,
      rgba(216,184,82,.32) 34%,
      transparent 34%,
      transparent 100%
    );
  box-decoration-break:clone;
  -webkit-box-decoration-break:clone;
  padding:0 .05em;
}

/* Reference information: quiet, single desktop line */
.migration-disclaimer.reference-inline{
  width:min(100%,980px)!important;
  margin:30px auto 0!important;
  padding:14px 0 0!important;
  border-top:1px solid #e1e6e3!important;
  display:flex!important;
  align-items:baseline!important;
  justify-content:flex-start!important;
  gap:8px!important;
  color:#7b8682!important;
  font-size:12px!important;
  line-height:1.65!important;
  white-space:nowrap!important;
}
.migration-disclaimer.reference-inline .reference-label{
  flex:0 0 auto!important;
  margin:0!important;
  font-size:12px!important;
  font-weight:700!important;
  letter-spacing:.04em!important;
  color:#727d79!important;
}
.migration-disclaimer.reference-inline .reference-copy{
  margin:0!important;
  min-width:0!important;
  font-size:12px!important;
  line-height:inherit!important;
  color:inherit!important;
  white-space:nowrap!important;
}
.migration-disclaimer.reference-inline a{
  color:inherit!important;
  text-underline-offset:3px!important;
}

@media(max-width:900px){
  .migration-disclaimer.reference-inline{
    display:block!important;
    white-space:normal!important;
    font-size:12px!important;
  }
  .migration-disclaimer.reference-inline .reference-copy{
    margin-top:4px!important;
    white-space:normal!important;
  }
}


/* source: confirmed-compare-system-v4 */

/* =========================================================
   v4 confirmed compare system
   Desktop: true 3-column comparison table
   Mobile: attribute-by-attribute comparison blocks
   ========================================================= */

.compare-table-wrap{
  width:min(100%,980px);
  margin:22px auto 0;
}

.compare-table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  table-layout:fixed;
  background:#fff;
  border:1px solid #dfe5e2;
  border-radius:14px;
  overflow:hidden;
}

.compare-table th,
.compare-table td{
  padding:14px 16px;
  border-right:1px solid #e4e8e6;
  border-bottom:1px solid #e4e8e6;
  text-align:left;
  vertical-align:top;
  line-height:1.75;
}

.compare-table tr:last-child th,
.compare-table tr:last-child td{
  border-bottom:0;
}

.compare-table th:last-child,
.compare-table td:last-child{
  border-right:0;
}

.compare-table thead th{
  background:#f4f6f5;
  color:#2a3531;
  font-size:.93rem;
  font-weight:750;
}

.compare-table thead th:first-child{
  width:108px;
}

.compare-table tbody th{
  width:108px;
  background:#fafbfa;
  color:#68736f;
  font-size:.86rem;
  font-weight:700;
  white-space:nowrap;
}

.compare-table .grammar-name{
  display:inline-block;
  white-space:nowrap;
  word-break:keep-all;
  overflow-wrap:normal;
  font-weight:750;
}

.compare-table .jp-example{
  display:block;
  margin-bottom:4px;
  color:#17201d;
}

.compare-table .zh-example{
  display:block;
  color:#6c7873;
  font-size:.92em;
}

.compare-mobile{
  display:none;
}

@media(max-width:760px){
  .compare-table-wrap{
    width:100%;
  }
  .compare-table{
    display:none;
  }
  .compare-mobile{
    display:grid;
    gap:14px;
  }
  .compare-mobile-item{
    border-top:1px solid #dfe5e2;
    padding-top:12px;
  }
  .compare-mobile-label{
    margin:0 0 8px;
    color:#697570;
    font-size:.8rem;
    font-weight:750;
    letter-spacing:.04em;
  }
  .compare-mobile-pair{
    display:grid;
    gap:9px;
  }
  .compare-mobile-side{
    padding:10px 12px;
    background:#f8faf9;
    border-left:3px solid #cfd9d4;
  }
  .compare-mobile-grammar{
    display:block;
    margin-bottom:4px;
    font-weight:750;
    white-space:nowrap;
    word-break:keep-all;
  }
}

/* 659060014 line-break and book-axis refinements */
#compare,
.section-compare,
.section-core,
.section-connection,
.section-examples,
.section-nuance{
  scroll-margin-top:90px;
}

.section-core .deep-copy,
.section-nuance .deep-copy,
.section-compare .deep-copy,
.section-examples .examples-list,
.section-connection .formulas{
  width:min(100%,860px);
  margin-left:auto;
  margin-right:auto;
}

.grammar-unit,
.section-compare strong,
.section-core strong,
.section-nuance strong{
  word-break:keep-all;
  overflow-wrap:normal;
}

@media(min-width:901px){
  .section-compare h2{
    text-wrap:balance;
  }
}


/* source: confirmed-compare-system-v5 */

/* v5: section title clean-up + unified compare table */
.section h2 .nuance-key,
.section h2 .grammar-unit,
.section h3 .nuance-key,
.section h3 .grammar-unit{
  background:none !important;
  background-image:none !important;
  box-shadow:none !important;
  text-decoration:none !important;
  border-bottom:0 !important;
  padding:0 !important;
}

.compare-table-wrap{
  width:min(100%,980px);
  margin:18px auto 0;
}
.compare-table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  table-layout:fixed;
  background:#fff;
  border:1px solid #dfe5e2;
  border-radius:16px;
  overflow:hidden;
}
.compare-table th,
.compare-table td{
  padding:14px 16px;
  border-right:1px solid #e4e8e6;
  border-bottom:1px solid #e4e8e6;
  text-align:left;
  vertical-align:top;
  line-height:1.72;
  word-break:normal;
  overflow-wrap:break-word;
}
.compare-table th:last-child,
.compare-table td:last-child{border-right:0;}
.compare-table tr:last-child th,
.compare-table tr:last-child td{border-bottom:0;}
.compare-table thead th{
  background:#f4f6f5;
  color:#20302b;
  font-weight:780;
  font-size:.95rem;
}
.compare-table thead th:first-child{
  width:118px;
}
.compare-table tbody th{
  width:118px;
  background:#fafbfa;
  color:#67726e;
  font-weight:760;
  font-size:.86rem;
  white-space:nowrap;
}
.compare-table .grammar-name,
.compare-mobile-grammar{
  display:inline-block;
  font-weight:780;
  white-space:nowrap;
  word-break:keep-all;
  overflow-wrap:normal;
}
.compare-table .jp-example,
.compare-mobile .jp-example{
  display:block;
  margin-bottom:4px;
  color:#18221e;
}
.compare-table .zh-example,
.compare-mobile .zh-example{
  display:block;
  color:#68746f;
  font-size:.93em;
}
.compare-intro{
  margin:0 0 8px;
}
.compare-mobile{display:none;}

html[data-theme="dark"] .compare-table{
  background:#1d2422;
  border-color:#3b4541;
}
html[data-theme="dark"] .compare-table thead th{
  background:#25302d;
  color:#e8efec;
}
html[data-theme="dark"] .compare-table tbody th{
  background:#212927;
  color:#b8c4bf;
}
html[data-theme="dark"] .compare-table td,
html[data-theme="dark"] .compare-table th{
  border-color:#3a4541;
}
html[data-theme="dark"] .compare-table .jp-example{color:#f1f4f2;}
html[data-theme="dark"] .compare-table .zh-example{color:#c4cfca;}

@media (max-width:760px){
  .compare-table{display:none;}
  .compare-mobile{display:grid;gap:12px;}
  .compare-mobile-item{
    border:1px solid #dfe5e2;
    border-radius:14px;
    overflow:hidden;
    background:#fff;
  }
  .compare-mobile-label{
    padding:10px 12px;
    background:#f4f6f5;
    color:#5f6b66;
    font-size:.8rem;
    font-weight:760;
    letter-spacing:.04em;
  }
  .compare-mobile-pair{display:grid;grid-template-columns:1fr;}
  .compare-mobile-side{
    padding:12px 12px 13px;
    border-top:1px solid #e4e8e6;
  }
  .compare-mobile-side:first-child{border-top:0;}
  .compare-mobile-side:nth-child(1){border-left:4px solid #b8cbc1;}
  .compare-mobile-side:nth-child(2){border-left:4px solid #d3d9f3;}
  html[data-theme="dark"] .compare-mobile-item{background:#1d2422;border-color:#3b4541;}
  html[data-theme="dark"] .compare-mobile-label{background:#25302d;color:#bfc9c4;}
  html[data-theme="dark"] .compare-mobile-side{border-color:#3a4541;}
}
/* N2 visible fill-in blank */
.question-blank{display:inline-block!important;min-width:4ch!important;text-align:center!important;border-bottom:0!important;text-decoration:none!important;color:inherit!important;font-weight:750!important;letter-spacing:.06em!important;line-height:1!important;vertical-align:baseline!important;user-select:none!important}
.question-blank::before{content:"____"}