:root{--navy:#102a43;--ink:#183b56;--muted:#627d98;--green:#27ae72;--green-dark:#16845a;--blue:#2877c7;--sky:#eaf4ff;--line:#d9e2ec;--paper:#fff;--bg:#f5f8fb;--bad:#b42318;--bad-bg:#fff1f0;--good-bg:#e9f8f0;--radius:18px;--shadow:0 10px 28px rgba(16,42,67,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif;line-height:1.55}button,a{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid #f5c451;outline-offset:3px}.site-header{height:68px;background:var(--paper);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 max(20px,calc((100% - 1120px)/2));position:sticky;top:0;z-index:5}.brand{display:flex;align-items:center;gap:10px;color:var(--navy);font-weight:800;text-decoration:none}.brand-mark{display:grid;place-items:center;background:var(--green);color:#fff;border-radius:9px;width:30px;height:30px;font-weight:900}.text-button,.back-button{background:transparent;border:0;color:var(--muted);font-weight:700;padding:8px}.text-button:hover,.back-button:hover{color:var(--navy)}.app-shell{max-width:1120px;margin:0 auto;padding:42px 20px 72px}.view{animation:rise .25s ease-out}.hero{display:flex;justify-content:space-between;gap:30px;align-items:center;background:linear-gradient(120deg,var(--navy),#174c73);color:#fff;border-radius:var(--radius);padding:38px clamp(24px,5vw,58px);box-shadow:var(--shadow)}.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.75rem;font-weight:800;color:var(--green-dark);margin:0 0 8px}.hero .eyebrow{color:#9fe4c1}.hero h1{font-size:clamp(1.7rem,4vw,2.8rem);line-height:1.15;margin:0 0 12px}.hero-copy{max-width:680px;margin:0;color:#d8e9f7}.hero-stat{flex:0 0 130px;text-align:center;border-left:1px solid rgba(255,255,255,.25);padding-left:30px}.hero-stat strong{display:block;font-size:3rem;line-height:1;color:#a3efc7}.hero-stat span{font-size:.85rem;color:#d8e9f7}.section-heading{display:flex;align-items:baseline;gap:14px;margin:38px 0 16px}.section-heading h2{font-size:1.25rem;margin:0;color:var(--navy)}.section-heading p{color:var(--muted);margin:0;font-size:.92rem}.level-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.level-button,.full-bank,.category-card{border:1px solid var(--line);background:var(--paper);border-radius:14px;box-shadow:0 3px 8px rgba(16,42,67,.03);transition:transform .18s,box-shadow .18s,border-color .18s}.level-button{padding:16px;text-align:left;display:flex;justify-content:space-between;align-items:center;color:var(--navy)}.level-button:hover,.category-card:hover,.full-bank:hover{transform:translateY(-2px);border-color:#91c7f4;box-shadow:var(--shadow)}.level-button strong{font-size:1.25rem}.level-button small,.category-card small,.full-bank small{display:block;color:var(--muted);font-size:.78rem}.domain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.domain-section{background:transparent}.domain-heading{display:flex;align-items:center;gap:10px;margin-bottom:9px}.domain-icon{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;background:var(--sky);color:var(--blue);font-weight:900}.domain-heading h3{margin:0;font-size:1.1rem;color:var(--navy)}.domain-heading p{margin:0;color:var(--muted);font-size:.78rem}.category-list{display:grid;gap:10px}.category-card{width:100%;padding:14px;text-align:left;color:var(--ink);display:flex;justify-content:space-between;gap:12px}.category-card strong{display:block;color:var(--navy);font-size:.95rem}.chips{display:flex;flex-wrap:wrap;gap:4px;margin-top:7px}.level-chip{display:inline-block;background:#e6f2ff;color:#1763a3;border-radius:999px;padding:2px 8px;font-weight:800;font-size:.7rem;letter-spacing:.03em}.full-bank{margin-top:24px;width:100%;padding:18px 20px;display:flex;justify-content:space-between;text-align:left;align-items:center;color:var(--navy)}.full-bank strong{display:block;font-size:1.05rem}.resume-panel{margin-top:18px;background:#edf9f2;border:1px solid #b9e9cd;border-radius:14px;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px}.resume-panel p{margin:0}.resume-panel small{color:var(--muted)}.resume-actions{display:flex;gap:8px}.primary-button,.secondary-button{border-radius:10px;padding:11px 18px;font-weight:800;border:1px solid transparent}.primary-button{background:var(--green);color:#fff}.primary-button:hover{background:var(--green-dark)}.secondary-button{background:#fff;color:var(--navy);border-color:var(--line)}.session-bar{display:flex;align-items:center;gap:18px;margin-bottom:18px}.progress-wrap{flex:1}.progress-label{display:flex;justify-content:space-between;color:var(--muted);font-size:.82rem;margin-bottom:7px}.progress-track{height:8px;border-radius:8px;background:#dfeaf2;overflow:hidden}.progress-fill{height:100%;background:var(--green);border-radius:inherit;transition:width .2s}.question-card{background:#fff;border-radius:var(--radius);padding:clamp(22px,5vw,48px);box-shadow:var(--shadow);max-width:820px;margin:0 auto}.question-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:.85rem;margin-bottom:22px}.thai-instruction{color:var(--muted);margin:0 0 6px;font-size:.92rem}.question-card h1{color:var(--navy);font-size:clamp(1.3rem,3vw,1.75rem);line-height:1.35;margin:0 0 20px}.media-box{background:var(--sky);border-radius:14px;padding:14px;margin:0 0 20px}.media-box img{display:block;width:100%;max-height:300px;object-fit:contain;border-radius:9px}.audio-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.audio-button{border:1px solid #9cc8eb;background:#fff;border-radius:9px;padding:9px 13px;color:var(--blue);font-weight:800}.transcript{margin:10px 0 0;padding:10px;border-left:3px solid var(--blue);color:var(--ink);font-size:.9rem;background:#fff}.stimulus{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:0 0 20px;overflow:auto}.stimulus h2{font-size:1rem;margin:0 0 8px;color:var(--navy)}.stimulus p{margin:0;white-space:pre-line}.stimulus table{border-collapse:collapse;width:100%;min-width:420px}.stimulus th,.stimulus td{border:1px solid var(--line);padding:8px;text-align:left}.stimulus th{background:var(--sky);color:var(--navy)}.choices{display:grid;gap:10px}.choice{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--line);border-radius:11px;padding:13px 14px;background:#fff;text-align:left;color:var(--ink);width:100%}.choice:hover{border-color:#6aaee1;background:#f8fcff}.choice.selected{border:2px solid var(--blue);background:#f1f8ff;padding:12px 13px}.choice.correct{border-color:var(--green);background:var(--good-bg)}.choice.wrong{border-color:#e59a93;background:var(--bad-bg)}.choice-letter{display:grid;place-items:center;border:1px solid var(--line);border-radius:7px;min-width:27px;height:27px;color:var(--muted);font-weight:800}.choice.selected .choice-letter{background:var(--blue);color:#fff;border-color:var(--blue)}.feedback{margin-top:18px;border-radius:11px;padding:14px}.feedback.good{background:var(--good-bg);border:1px solid #a6e0bd}.feedback.bad{background:var(--bad-bg);border:1px solid #efb1ab}.feedback strong{display:block;color:var(--navy)}.feedback p{margin:4px 0 0}.question-actions{display:flex;justify-content:flex-end;margin-top:22px}.results-top{max-width:820px;margin:0 auto 20px}.results-top h1{color:var(--navy);margin:0}.score-card{max-width:820px;margin:auto;background:linear-gradient(120deg,var(--navy),#174c73);border-radius:var(--radius);color:#fff;padding:28px;display:flex;align-items:center;gap:28px}.score-number{font-size:3.4rem;font-weight:900;line-height:1;color:#a3efc7}.score-card p{margin:0;color:#d8e9f7}.breakdowns{max-width:820px;margin:18px auto;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.breakdown-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px}.breakdown-card h2{font-size:.95rem;margin:0 0 10px;color:var(--navy)}.breakdown-row{display:flex;justify-content:space-between;color:var(--muted);font-size:.88rem}.results-actions{max-width:820px;margin:22px auto;display:flex;justify-content:flex-end;gap:10px}.app-status{text-align:center;color:var(--muted);min-height:24px}.noscript{padding:20px;background:#fff4ce;color:#6b4e00;text-align:center}@keyframes rise{from{opacity:.5;transform:translateY(5px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media(max-width:760px){.site-header{padding:0 14px}.brand{font-size:.9rem}.app-shell{padding:24px 14px 50px}.hero{padding:26px 22px;display:block}.hero-stat{border:0;border-top:1px solid rgba(255,255,255,.25);padding:14px 0 0;margin-top:20px;text-align:left}.hero-stat strong{display:inline;margin-right:7px}.level-actions,.domain-grid{grid-template-columns:1fr 1fr}.domain-grid{gap:12px}.domain-section:first-child{grid-column:1/-1}.section-heading{display:block;margin-top:28px}.section-heading p{margin-top:3px}.resume-panel{display:block}.resume-actions{margin-top:10px}.question-card{padding:22px 16px}.session-bar{gap:7px}.back-button{padding-left:0}.breakdowns{grid-template-columns:1fr}.score-card{padding:22px}.results-actions{display:grid;grid-template-columns:1fr}.results-actions button{width:100%}}@media(max-width:420px){.level-actions{grid-template-columns:1fr}.domain-grid{grid-template-columns:1fr}.domain-section:first-child{grid-column:auto}.site-header{flex-wrap:wrap;row-gap:8px}.site-header .text-button{font-size:.75rem}.full-bank{margin-top:16px}}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.muted-note{font-size:.78rem;color:var(--muted)}
.domain-heading-copy{flex:1;min-width:0}.domain-practice{border:1px solid #9cc8eb;background:#fff;color:var(--blue);border-radius:9px;padding:7px 10px;font-size:.75rem;font-weight:800;white-space:nowrap}.domain-practice:hover{background:var(--sky)}.category-card{display:block;width:auto;padding:16px;text-align:left}.category-summary{display:flex;justify-content:space-between;gap:12px}.category-summary strong{display:block}.set-actions{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:7px;margin-top:13px}.set-button{border:1px solid var(--line);border-radius:9px;background:#f8fbfe;color:var(--navy);padding:8px 5px;text-align:center}.set-button:hover{border-color:var(--blue);background:var(--sky)}.set-button strong{font-size:.78rem}.set-button small{font-size:.68rem}@media(max-width:760px){.set-actions{grid-template-columns:repeat(3,minmax(0,1fr))}.domain-heading{flex-wrap:wrap}.domain-practice{margin-left:46px}}@media(max-width:420px){.set-actions{grid-template-columns:repeat(2,minmax(0,1fr))}.domain-practice{width:100%;margin-left:0}}
/* Safe-area (notch/Dynamic Island/home indicator) support + touch ergonomics for iPhone 15 Pro Max-class screens and up. All env() values resolve to 0 where there is no safe area, so this layer is a no-op on other devices. */
.resume-panel[hidden]{display:none}
button,a{-webkit-tap-highlight-color:transparent}
.header-actions{display:flex;align-items:center;gap:8px}.header-actions .text-button{text-decoration:none;white-space:nowrap}
.site-header{height:auto;min-height:68px;padding-top:env(safe-area-inset-top);padding-left:max(20px,calc((100% - 1120px)/2),env(safe-area-inset-left));padding-right:max(20px,calc((100% - 1120px)/2),env(safe-area-inset-right))}
.text-button,.back-button{min-height:44px;display:inline-flex;align-items:center}
.app-shell{padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right));padding-bottom:calc(72px + env(safe-area-inset-bottom))}
@media(max-width:760px){
.app-shell{padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right));padding-bottom:calc(50px + env(safe-area-inset-bottom))}
.question-actions{display:grid;grid-template-columns:1fr}
.question-actions button{width:100%}
}
@media(max-height:500px) and (orientation:landscape){
.app-shell{padding-top:20px;padding-bottom:calc(20px + env(safe-area-inset-bottom))}
.hero{padding:18px 24px}
.section-heading{margin:20px 0 12px}
}
.level-toggle,.domain-toggle{flex:1;min-width:0;display:flex;align-items:center;gap:10px;padding:0;border:0;background:transparent;color:inherit;text-align:left;cursor:default}
.level-heading-copy,.domain-heading-copy{display:block;flex:1;min-width:0}
.section-title,.domain-title{display:block;margin:0;font-size:1.1rem;font-weight:800;color:var(--navy)}
.section-copy,.domain-meta{display:block;margin:0;color:var(--muted);font-size:.78rem}
.section-chevron,.domain-chevron{display:none;width:30px;height:30px;place-items:center;border-radius:50%;background:var(--sky);color:var(--blue);font-size:1.2rem;font-weight:900;transition:transform .18s ease}
.level-panel[hidden],.category-list[hidden]{display:none}
.section-guidance,.domain-guidance{margin:0 0 12px;padding:9px 11px;border-radius:10px;background:#eef8f3;color:var(--green-dark);font-size:.78rem}
@media(max-width:760px){
.hero{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;max-height:25vh;max-height:25svh;padding:12px 14px;overflow:auto}
.hero .eyebrow{font-size:.6rem;margin-bottom:3px}.hero h1{font-size:1.15rem;margin-bottom:5px}.hero-copy{font-size:.72rem;line-height:1.35}.hero-stat{border:0;border-left:1px solid rgba(255,255,255,.25);padding:0 0 0 10px;margin:0;text-align:center}.hero-stat strong{display:block;font-size:1.55rem;margin:0}.hero-stat span{font-size:.65rem}
.level-heading{margin:28px 0 10px;padding:11px;background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:0 3px 8px rgba(16,42,67,.03)}
.level-heading.is-open{border-color:#91c7f4}.level-toggle{width:100%;cursor:pointer}.section-chevron{display:grid;margin-left:auto}.level-toggle[aria-expanded="true"] .section-chevron{transform:rotate(180deg)}
.level-actions{grid-template-columns:repeat(2,minmax(0,1fr))}.level-button{min-width:0;padding:11px}.level-button strong{font-size:1rem}.level-button small{font-size:.67rem}
.domain-grid{grid-template-columns:1fr}.domain-section:first-child{grid-column:auto}.domain-heading{align-items:stretch;padding:11px;background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:0 3px 8px rgba(16,42,67,.03)}.domain-section.is-open .domain-heading{border-color:#91c7f4}.domain-toggle{width:100%;cursor:pointer}.domain-chevron{display:grid;margin-left:auto}.domain-toggle[aria-expanded="true"] .domain-chevron{transform:rotate(180deg)}.domain-practice{margin-left:46px}
.set-actions{grid-template-columns:repeat(5,minmax(0,1fr));gap:4px}.set-button{min-width:0;padding:7px 2px}.set-button strong{font-size:.7rem}.set-button small{font-size:.58rem}
}
@media(max-width:420px){.domain-practice{margin-left:46px;width:auto}}

/* ---- มือถือ: หน้าแรกต้องเห็นตัวเลือกครบโดยไม่ต้องเลื่อน ----
   ที่กินความสูงจริงคือระยะห่างระหว่างบล็อกกับ hero ไม่ใช่ตัวปุ่ม
   จึงบีบ margin/padding เป็นหลัก และคุมไม่ให้หัวข้อหมวดตัดบรรทัดเกิน 2 บรรทัด
   ปุ่มทุกตัวยังต้อง >= 44px เพราะเป็นเป้าแตะ */
@media (max-width: 420px) {
  .site-header { min-height: 56px; row-gap: 4px; }
  .app-shell { padding-top: 10px; }

  .hero { padding: 10px 12px; gap: 8px; }
  .hero h1 { font-size: 1.08rem; line-height: 1.3; margin: 0 0 3px; }
  .hero .eyebrow { font-size: .6rem; margin-bottom: 2px; }
  /* ข้อความโปรยกิน 3 บรรทัด (54px) และบอกซ้ำกับตัวเลข 550 ที่อยู่ข้าง ๆ อยู่แล้ว
     บนจอเล็กมันดันตัวเลือกจริงตกจอ จึงตัดออกเฉพาะมือถือ */
  .hero-copy { display: none; }
  .hero-stat { padding-left: 10px; }

  .app-shell { padding-top: 6px; }
  .section-heading { margin: 6px 0 5px; }
  .section-heading h2 { font-size: 1rem; margin: 0; line-height: 1.35; }
  .section-heading p { font-size: .74rem; line-height: 1.4; margin: 2px 0 0; }

  .domain-grid { gap: 6px; }
  .domain-heading { padding: 5px 7px; margin-bottom: 4px; }
  .domain-toggle { font-size: .86rem; }
  /* ปุ่ม "ฝึกทั้งทักษะ" ถูกยืดสูงเท่าหัวข้อเพราะอยู่ในแถว flex เดียวกัน
     ทั้งที่ตัวมันเองต้องการแค่ ~40px — ตรึงไว้ที่ขนาดพอแตะ อย่าให้ยืด */
  .domain-practice { align-self: center; min-height: 44px; margin-left: 34px; padding: 6px 10px; }
}