:root{
  --bg:#f7f8f6;
  --panel:#fff;
  --panel2:#f9faf8;
  --line:#e1e8e4;
  --text:#1d302e;
  --muted:#667a75;
  --green:#126e64;
  --greenbg:#eaf4ef;
}
body{font-family:"Segoe UI Variable","Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--text)}
.top{background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:0 1px 12px #19352b08}
.top-inner{max-width:1180px;gap:24px}
.brand{font-family:"Segoe UI Variable","Segoe UI",system-ui,sans-serif;letter-spacing:-.8px;color:var(--text)}
.top nav{align-items:center;gap:4px}
.top nav a{font-size:12px;color:#536962;border-radius:9px;padding:10px 13px;white-space:nowrap}
.top nav a:hover,.top nav a[aria-current="page"]{background:#eff5f1;color:var(--green)}
.nav-more{position:relative;margin-left:auto}
.nav-more>summary{list-style:none;cursor:pointer;color:#536962;font-weight:650;font-size:12px;padding:10px 13px;border-radius:9px}
.nav-more>summary::-webkit-details-marker{display:none}
.nav-more>summary::after{content:"⌄";margin-left:7px;font-size:14px}
.nav-more[open]>summary,.nav-more>summary:hover{background:#eff5f1;color:var(--green)}
.nav-more-menu{position:absolute;right:0;top:calc(100% + 9px);z-index:30;min-width:190px;background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:0 18px 40px #18312a20;padding:7px;display:grid;gap:2px}
.nav-more-menu a{display:block!important;width:100%;font-size:12px!important}
button,.button{border-radius:9px}
.primary{background:var(--green);border-color:var(--green);color:#fff;box-shadow:none}
.primary:hover{background:#0a5b52;border-color:#0a5b52}
.question-card,.subject,.stats .stat{border-color:var(--line);border-radius:15px;box-shadow:0 8px 30px #18312a08}
.welcome{border-color:#dce9e2;background:linear-gradient(135deg,#eef6f1,#f7faf7);border-radius:22px}
.welcome h1{max-width:760px;font-size:clamp(34px,4vw,48px);letter-spacing:-1.7px}
.welcome>p{color:#435c56;line-height:1.7}
.stats .stat{padding:19px 22px}
.stat strong{color:var(--green)}
footer{border-color:var(--line)}

#author-main{max-width:1100px;margin-top:36px}
.author-hero{display:grid;grid-template-columns:minmax(0,1fr) 245px;gap:34px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px 40px;box-shadow:0 12px 36px #1b392d0a}
.author-intro .eyebrow{color:var(--green);font-size:10px;letter-spacing:1.8px;margin:0 0 10px}
.author-intro h1{font-size:clamp(29px,3.1vw,42px);letter-spacing:-1.5px;line-height:1.14;margin:0 0 12px;max-width:690px}
.author-lead{font-size:17px;color:#5a6e68;margin:0 0 19px}
.author-tags{display:flex;gap:8px;flex-wrap:wrap;margin:0}
.author-tags span{font-size:11px;font-weight:650;color:#49655b;background:#f1f6f2;border:1px solid #e2ede5;border-radius:999px;padding:5px 10px}
.author-about{margin-top:14px;font-size:12px;color:#61736d}
.author-about summary{cursor:pointer;color:var(--green);font-weight:650;display:inline-block}
.author-about p{max-width:640px;margin:9px 0 0;line-height:1.55}
.author-about a{display:inline-block;margin-top:8px;color:var(--green)}
.author-progress{align-self:stretch;display:flex;flex-direction:column;justify-content:center;background:#f5f8f5;border:1px solid #e7eee8;border-radius:15px;padding:22px}
.author-progress>span{font-size:11px;font-weight:700;letter-spacing:1.1px;text-transform:uppercase;color:#6b8074}
.author-progress strong{font-size:40px;letter-spacing:-1.6px;line-height:1.2;margin:11px 0;color:#1d4d43}
.author-progress strong small{font-size:15px;font-weight:500;letter-spacing:0;color:#7d9085}
.author-progress-track{height:7px;background:#dce9df;border-radius:999px;overflow:hidden}
.author-progress-track span{display:block;height:100%;background:var(--green);border-radius:999px}
.author-progress p{font-size:12px;margin:10px 0 0;color:#5f7669}
.author-controls{margin:22px 0 18px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:19px 23px}
.author-controls-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:13px}
.author-controls-head h2{font-size:17px;letter-spacing:-.3px;margin:0}
.author-controls-head span{font-size:11px;color:#7a8a80}
.author-filters{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.author-filters label{font-size:11px;font-weight:700;letter-spacing:.3px;color:#62766b}
.author-filters select{font-size:13px;font-weight:500;color:#233b33;background:#fff;border:1px solid #d9e4dc;border-radius:9px;padding:10px 12px;margin-top:5px;min-width:0}
.coverage-panel{margin:14px 0 0;padding:0;background:transparent;border:0;border-top:1px solid var(--line);border-radius:0}
.coverage-panel>summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:13px 2px 0;cursor:pointer;color:var(--green);font-size:12px;font-weight:700}
.coverage-panel>summary::-webkit-details-marker{display:none}
.coverage-panel>summary span::before{content:"＋";margin-right:7px;font-size:15px;vertical-align:-1px}
.coverage-panel[open]>summary span::before{content:"−"}
.coverage-panel>summary small{font-size:11px;font-weight:400;color:#7b8d81}
.coverage-inner{padding-top:12px}
.coverage-inner>p{font-size:12px;color:#728277;margin:0 0 13px}
.coverage-group{border-top:1px solid #e9eee9;padding:4px 0}
.coverage-group summary{font-size:12px;color:#3b594c;padding:6px 2px}
.coverage-group summary span{font-size:11px}
.coverage-topics{gap:7px}
.coverage-topics button{font-size:11px;border-color:#dde8df;color:#3e5d50;padding:7px 10px}
.coverage-topics button:hover{background:#eef7f0;border-color:#98bfa6}
.author-question{border-radius:18px;padding:34px 40px;box-shadow:0 12px 34px #18312a0a}
.author-question-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:11px;font-weight:750;letter-spacing:1.2px;text-transform:uppercase;color:#789084}
.author-subject{letter-spacing:0;text-transform:none;background:#eef5ef;color:#30674e;padding:5px 10px;border-radius:999px}
.author-question h2{font-size:23px;line-height:1.3;letter-spacing:-.5px;margin:19px 0 8px;color:#1d3329}
.author-question .question-stem{font-size:16px;line-height:1.75;color:#263c34;margin:10px 0 22px;white-space:pre-wrap}
.author-question fieldset{margin:0 0 20px}
.author-question legend{font-size:11px;letter-spacing:1px;text-transform:uppercase;font-weight:700;color:#7b8b7f;margin-bottom:8px}
.author-option{position:relative;display:flex;gap:14px;align-items:flex-start;margin:9px 0;padding:13px 16px;border:1px solid #e2e9e3;border-radius:12px;background:#fff;cursor:pointer;transition:border-color .15s,background .15s,box-shadow .15s}
.author-option:hover{border-color:#9dbdaf;background:#f8fbf8}
.author-option:has(input:focus-visible){outline:3px solid #6bb4a0;outline-offset:2px}
.author-option:has(input:checked){border-color:#5eaa8d;background:#f2faf5;box-shadow:0 0 0 1px #5eaa8d40}
.author-option input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.author-letter{display:grid;place-items:center;flex:none;width:29px;height:29px;border:1px solid #d9e5dc;border-radius:8px;background:#f7faf7;color:#4f7361;font-weight:750;font-size:12px}
.author-option:has(input:checked) .author-letter{background:var(--green);border-color:var(--green);color:#fff}
.author-option-text{font-size:14px;line-height:1.6;color:#2d4137;padding-top:3px}
.author-option.is-correct{border-color:#82b59a;background:#f2faf4}
.author-option.is-wrong{border-color:#d6a39b;background:#fff7f5}
.author-answer-action{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.author-answer-action .primary{padding:11px 19px}
#author-notice{font-size:12px;color:#a24b39;margin:0}
.author-question .feedback{background:#f5faf6;border:1px solid #d8eade;border-left:4px solid var(--green);border-radius:12px;padding:22px 25px;margin:24px 0 0}
.author-question .feedback.wrong{border-left-color:#bb826d;background:#fdf9f7;border-color:#eee0da}
.author-question .feedback .eyebrow{font-size:10px;color:#6b8a76;margin:0 0 4px}
.author-question .feedback h3{font-size:20px;letter-spacing:-.3px;margin:0 0 12px}
.author-explanation,.author-selected-explanation{font-size:14px;line-height:1.65;margin:0 0 13px}
.author-all-comments{border-top:1px solid #dbe9df;padding:12px 0 0;margin:14px 0}
.author-all-comments summary{font-size:12px;font-weight:700;color:var(--green);cursor:pointer}
.author-all-comments p{font-size:13px;line-height:1.6;padding:10px 0!important;margin:0;border-bottom:1px solid #e4ede6!important}
.author-source{font-size:11px!important;color:#6b7d70;border:0!important;padding:0!important;margin:10px 0!important}
.author-source a{color:var(--green)}
.author-pagination{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:20px 0 35px}
.author-pagination span{font-size:12px;color:#829087}
.author-pagination button{background:#fff;border-color:#dbe6dd;color:#325a47}
.author-pagination button:disabled{opacity:.4;cursor:not-allowed}
@media(max-width:760px){
  #author-main{margin-top:20px;padding:0 16px}
  .author-hero{grid-template-columns:1fr;gap:20px;padding:25px 23px}
  .author-progress{padding:15px 18px}
  .author-progress strong{font-size:30px;margin:5px 0}
  .author-progress p{margin-top:7px}
  .author-controls{padding:17px}
  .author-question{padding:24px 20px}
  .top nav{gap:2px}
  .nav-more{margin-left:0}
  .nav-more-menu{right:auto;left:0}
}
@media(max-width:520px){
  .author-intro h1{font-size:30px}
  .author-lead{font-size:15px}
  .author-filters{grid-template-columns:1fr}
  .author-controls-head span{display:none}
  .coverage-panel>summary small{display:none}
  .author-question-meta{font-size:10px;letter-spacing:.4px}
  .author-question h2{font-size:20px}
  .author-option{padding:12px;gap:10px}
  .author-option-text{font-size:13px}
  .author-pagination button{padding:9px 11px;font-size:12px}
  .top nav{overflow-x:auto;flex-wrap:nowrap;justify-content:flex-start;scrollbar-width:none}
  .top nav::-webkit-scrollbar{display:none}
}