:root {
  --navy:#0c376a;
  --blue:#1462ab;
  --blue-soft:#edf5ff;
  --text:#16273b;
  --muted:#63758a;
  --border:#dfe7f0;
  --bg:#f5f7fb;
  --white:#fff;
  --gold:#edc36e;
  --red:#ab3030;
  --shadow:0 14px 42px rgba(20,49,80,.075);
}
*,*::before,*::after {box-sizing:border-box}
html {font-size:16px;scroll-behavior:smooth}
body {margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font:400 16px/1.55 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;-webkit-font-smoothing:antialiased}
button,input {font:inherit}
button {cursor:pointer;touch-action:manipulation}
button:disabled {cursor:not-allowed}
button:focus-visible,input:focus-visible {outline:3px solid #f4bc4b;outline-offset:3px}
.school-header {background:var(--navy);color:#fff;border-bottom:4px solid var(--gold);padding:17px max(20px,env(safe-area-inset-right)) 15px}
.school-header-inner {max-width:650px;margin:auto;display:flex;align-items:center;gap:12px}
.school-monogram {display:grid;place-items:center;flex-shrink:0;width:43px;height:43px;border:1px solid rgba(255,255,255,.55);border-radius:12px;font-size:13px;font-weight:800;letter-spacing:.07em}
.school-identity p {margin:0}
.dept {font-size:10px;letter-spacing:.065em;opacity:.75;font-weight:700}
.school {font-size:12px;line-height:1.35;font-weight:750;max-width:390px}
.app {width:100%;max-width:620px;margin:0 auto;flex:1;padding:23px 18px 28px}
.card {background:var(--white);border:1px solid #e8edf4;border-radius:22px;padding:26px 23px;box-shadow:var(--shadow)}
.eyebrow {display:inline-flex;align-items:center;gap:7px;color:#205b9b;text-transform:uppercase;font-size:11px;font-weight:850;letter-spacing:.11em;margin:0 0 12px}
h1,h2,p {margin-top:0}
h1 {font-size:clamp(25px,6.4vw,34px);letter-spacing:-.035em;line-height:1.18;margin:0 0 13px;font-weight:800}
h2 {font-size:clamp(22px,5.4vw,27px);line-height:1.32;letter-spacing:-.023em;font-weight:750}
.subtitle {color:var(--muted);font-size:14px;line-height:1.65;margin:0 0 22px}
.badges {display:flex;flex-wrap:wrap;gap:7px;margin:0 0 25px}
.mini-badge {display:inline-flex;border-radius:7px;background:#eef4fa;color:#355c80;font-size:12px;font-weight:700;padding:6px 10px}
.field {display:block;margin-bottom:17px}
.field-label {display:block;margin:0 0 7px;font-size:13px;font-weight:800}
.text-field {display:block;width:100%;min-height:52px;padding:12px 14px;background:#fff;border:1.5px solid #cad6e3;border-radius:12px;color:var(--text);font-size:16px;transition:border-color .15s,box-shadow .15s}
.text-field:focus {border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,98,171,.12);outline:0}
.primary-button,.secondary-button {display:flex;align-items:center;justify-content:center;gap:9px;width:100%;border:0;border-radius:13px;min-height:55px;padding:13px 16px;font-size:16px;font-weight:800;transition:transform .14s,filter .14s}
.primary-button {background:var(--navy);color:#fff;box-shadow:0 6px 16px rgba(12,55,106,.16)}
.primary-button:not(:disabled):active,.secondary-button:not(:disabled):active {transform:scale(.992)}
.primary-button:disabled {background:#bdcbd9;color:#f8fafd;box-shadow:none}
.secondary-button {background:#e8f1fc;color:var(--navy)}
.small-print {margin:16px 0 0;color:var(--muted);font-size:12px;line-height:1.7}
.rule {height:1px;background:var(--border);margin:23px 0}
.rules {padding-left:21px;margin:0;color:#445770;font-size:13px;line-height:1.85}
.rules li+li {margin-top:3px}
.topline {display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.number {font-weight:850;font-size:14px;color:var(--navy)}
.attempt-pill {background:#f2f5f8;color:#516578;border:1px solid #e0e8ef;padding:5px 9px;border-radius:20px;font-size:11px;font-weight:800;white-space:nowrap}
.progress-track {height:7px;overflow:hidden;background:#e8eef6;border-radius:9px;margin-bottom:20px}
.progress-fill {height:100%;border-radius:9px;background:var(--blue);transition:width .22s ease}
.student-caption {font-size:12px;color:var(--muted);margin:0 0 11px}
.question-title {margin:0 0 24px;min-height:68px}
.answer-group {border:0;margin:0;padding:0;min-width:0}
.answer-group legend {color:var(--muted);font-size:12px;font-weight:800;margin-bottom:10px;padding:0}
.choice {position:relative;display:flex;align-items:center;gap:13px;min-height:64px;padding:13px 15px;margin:0 0 11px;border:1.5px solid #d9e3ef;border-radius:13px;background:white;cursor:pointer;transition:border-color .16s,background .16s,box-shadow .16s;-webkit-tap-highlight-color:transparent}
.choice input {position:absolute;opacity:0;inline-size:1px;block-size:1px;overflow:hidden}
.choice:has(input:focus-visible) {outline:3px solid #edc36e;outline-offset:2px}
.choice:has(input:checked) {border-color:var(--blue);background:var(--blue-soft);box-shadow:0 0 0 1px var(--blue)}
.choice-letter {display:grid;place-items:center;min-width:35px;height:35px;border-radius:9px;background:#eff3f7;color:#526a83;font-size:14px;font-weight:850;flex-shrink:0}
.choice:has(input:checked) .choice-letter {background:var(--blue);color:#fff}
.choice-text {font-size:15px;line-height:1.5;font-weight:560;flex:1}
.choice-check {font-size:18px;color:var(--blue);opacity:0;font-weight:800}
.choice:has(input:checked) .choice-check {opacity:1}
.exam-actions {margin-top:20px}
.no-back {display:flex;gap:8px;justify-content:center;align-items:center;color:#7b8a9a;font-size:12px;text-align:center;margin:14px 0 0}
.result-panel {text-align:center}
.result-icon {margin:3px auto 16px;display:grid;place-items:center;width:60px;height:60px;background:#eaf5ee;color:#1e7a45;border-radius:18px;font-size:29px;font-weight:800}
.result-panel h1 {font-size:29px}
.score-area {display:flex;flex-direction:column;align-items:center;justify-content:center;background:#f1f6fd;border:1px solid #dce8f7;border-radius:19px;padding:24px 18px;margin:26px 0 18px}
.score-label {color:#597089;font-size:13px;font-weight:800;letter-spacing:.07em;text-transform:uppercase}
.score-line {display:flex;align-items:baseline;gap:7px;margin:6px 0}
.score {color:var(--navy);font-size:clamp(53px,15vw,74px);font-weight:850;letter-spacing:-.07em;line-height:1.1}
.score-total {font-size:24px;color:#607891;font-weight:700}
.score-note {color:var(--muted);font-size:12px}
.result-meta {font-size:13px;color:var(--muted);margin-bottom:24px}
.retake-area {padding:16px;border:1px solid #dfe8f1;background:#fafcfe;border-radius:16px;text-align:left}
.retake-area h2 {font-size:16px;margin:0 0 7px}
.retake-area p {color:var(--muted);font-size:13px;line-height:1.65;margin:0 0 15px}
.retake-confirm {padding:15px;border:1px solid #eccd7a;background:#fffbec;border-radius:15px;text-align:left}
.retake-confirm p {font-size:13px;color:#62522c;margin:0 0 14px}
.retake-buttons {display:grid;grid-template-columns:1fr 1fr;gap:10px}
.retake-buttons button {font-size:14px}
.page-footer {padding:6px 20px max(22px,env(safe-area-inset-bottom));color:#8796a8;text-align:center;font-size:11px;line-height:1.6}
.notice {position:fixed;z-index:20;top:max(13px,env(safe-area-inset-top));left:16px;right:16px;max-width:590px;margin:0 auto;background:#fff2f1;color:var(--red);border:1px solid #ecc6c4;border-radius:12px;padding:14px 17px;box-shadow:0 14px 36px rgba(50,40,30,.17);font-size:13px;font-weight:700}
.notice[hidden]{display:none}
.loading-card {display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:260px;color:var(--muted);font-size:14px;gap:15px}
.loading-spinner {height:30px;width:30px;border:3px solid #e0eaf5;border-top-color:var(--blue);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin {to {transform:rotate(360deg)}}
@media(min-width:600px){.app {padding-top:45px}.card {padding:36px 38px}.school-header{padding-top:20px;padding-bottom:18px}.school {font-size:14px}}
@media(max-width:360px){.app{padding:18px 12px}.card{padding:22px 17px}.choice{padding:11px 12px;gap:10px}.choice-text{font-size:14px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition-duration:0s!important;animation-duration:0s!important;scroll-behavior:auto!important}}