@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+Thai:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap";:root{--primary: #3B82F6;--primary-700:#2563EB;--secondary: #60A5FA;--cta: #F97316;--cta-600: #EA580C;--bg: #F8FAFC;--surface: #FFFFFF;--text: #1E293B;--muted: #475569;--success: #16A34A;--warning: #F59E0B;--danger: #DC2626;--line: #E2E8F0;--line-2: #EDF1F6;--slate-50: #F8FAFC;--slate-100: #F1F5F9;--slate-200: #E2E8F0;--slate-400: #94A3B8;--slate-500: #64748B;--primary-tint: #EFF6FF;--cta-tint: #FFF4ED;--success-tint: #ECFDF3;--warning-tint: #FEF6E7;--danger-tint: #FEF2F2;--r-sm: 8px;--r: 12px;--r-lg: 16px;--r-xl: 20px;--sh-sm: 0 1px 2px rgba(15,23,42,.05);--sh: 0 1px 2px rgba(15,23,42,.04), 0 4px 14px rgba(15,23,42,.06);--sh-md: 0 4px 8px rgba(15,23,42,.05), 0 12px 28px rgba(15,23,42,.1);--sh-lg: 0 18px 50px rgba(15,23,42,.18);--ff: "Inter","Noto Sans Thai",system-ui,-apple-system,sans-serif;--ff-mono: "JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;--z-header: 10;--z-drawer: 20;--z-dropdown: 30;--z-modal: 50}*{box-sizing:border-box}html,body,#root{height:100%}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--ff);font-size:16px;line-height:1.55;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}:lang(th),.th{font-family:var(--ff)}.mono{font-family:var(--ff-mono);font-feature-settings:"liga" 0}h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;color:var(--text)}p{margin:0}button{font-family:inherit}a{color:var(--primary);text-decoration:none}::selection{background:#bfdbfe}:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important}}.app-bg{min-height:100%;background:var(--bg)}.container{width:100%;max-width:960px;margin:0 auto;padding:0 24px}.stack{display:flex;flex-direction:column}.row{display:flex;align-items:center}.spread{display:flex;align-items:center;justify-content:space-between}.muted{color:var(--muted)}.tnum{font-variant-numeric:tabular-nums}.btn{--btn-bg: var(--surface);--btn-fg: var(--text);display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 18px;font-size:15px;font-weight:600;line-height:1;color:var(--btn-fg);background:var(--btn-bg);border:1px solid var(--line);border-radius:var(--r-sm);cursor:pointer;transition:background .16s,border-color .16s,color .16s,box-shadow .16s;white-space:nowrap;-webkit-user-select:none;user-select:none}.btn svg{width:18px;height:18px;flex:0 0 auto}.btn:hover{background:var(--slate-50)}.btn:active{transform:translateY(.5px)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{--btn-bg: var(--primary);--btn-fg: #fff;border-color:transparent;box-shadow:0 1px 2px #2563eb40}.btn-primary:hover{--btn-bg: var(--primary-700)}.btn-cta{--btn-bg: var(--cta);--btn-fg: #fff;border-color:transparent;box-shadow:0 1px 2px #ea580c47}.btn-cta:hover{--btn-bg: var(--cta-600)}.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}.btn-ghost:hover{background:var(--slate-100);color:var(--text)}.btn-outline{background:var(--surface)}.btn-danger-ghost{background:transparent;border-color:transparent;color:var(--danger)}.btn-danger-ghost:hover{background:var(--danger-tint)}.btn-sm{min-height:36px;padding:0 12px;font-size:14px;gap:6px}.btn-sm svg{width:16px;height:16px}.btn-block{width:100%}.spin{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite}.spin.dark{border-color:#1e293b40;border-top-color:var(--muted)}@keyframes spin{to{transform:rotate(360deg)}}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh)}.card-pad{padding:24px}.badge{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;font-size:13px;font-weight:600;line-height:1;border-radius:999px;white-space:nowrap;flex:0 0 auto;background:var(--slate-100);color:var(--muted)}.badge svg{width:14px;height:14px}.badge-primary{background:var(--primary-tint);color:var(--primary-700)}.badge-cta{background:var(--cta-tint);color:var(--cta-600)}.badge-success{background:var(--success-tint);color:#15803d}.badge-warning{background:var(--warning-tint);color:#b45309}.badge-danger{background:var(--danger-tint);color:var(--danger)}.badge-dot{width:7px;height:7px;border-radius:50%;background:currentColor}.field{display:flex;flex-direction:column;gap:7px}.field label{font-size:14px;font-weight:600;color:var(--text)}.input{width:100%;min-height:46px;padding:0 14px;font-family:inherit;font-size:16px;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-sm);transition:border-color .16s,box-shadow .16s}.input::placeholder{color:var(--slate-400)}.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f629}.input.is-error{border-color:var(--danger)}.input.is-error:focus{box-shadow:0 0 0 3px #dc262624}textarea.input{padding:12px 14px;line-height:1.6;resize:vertical;min-height:120px}.field-error{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--danger);font-weight:500}.field-error svg{width:15px;height:15px}.score-input{width:64px;min-height:44px;text-align:center;font-family:var(--ff-mono);font-size:18px;font-weight:600;border:1.5px solid var(--line);border-radius:var(--r-sm);color:var(--text);background:var(--surface)}.score-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f629}.topbar{position:sticky;top:0;z-index:var(--z-header);display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 24px;background:#ffffffd9;-webkit-backdrop-filter:saturate(140%) blur(10px);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:16px;letter-spacing:-.01em}.brand-mark{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;color:#fff;background:linear-gradient(150deg,var(--primary),var(--primary-700));box-shadow:0 2px 6px #2563eb59}.brand-mark svg{width:18px;height:18px}.usermenu{display:flex;align-items:center;gap:10px;padding:5px 6px 5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);cursor:pointer}.usermenu:hover{background:var(--slate-50)}.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700;color:#fff;background:var(--slate-500)}.avatar.judge{background:linear-gradient(150deg,#8b5cf6,#6d28d9)}.choice{display:flex;align-items:flex-start;gap:13px;padding:14px 16px;min-height:44px;border:1.5px solid var(--line);border-radius:var(--r);cursor:pointer;background:var(--surface);transition:border-color .15s,background .15s,box-shadow .15s}.choice:hover{border-color:var(--secondary);background:var(--primary-tint)}.choice .dot{flex:0 0 auto;width:22px;height:22px;margin-top:1px;border-radius:50%;border:2px solid var(--slate-400);display:grid;place-items:center;transition:border-color .15s}.choice .dot:after{content:"";width:11px;height:11px;border-radius:50%;background:var(--primary);transform:scale(0);transition:transform .15s}.choice .opt-label{flex:0 0 auto;font-weight:700;color:var(--muted);margin-right:2px}.choice .opt-body{color:var(--text)}.choice.is-selected{border-color:var(--primary);background:var(--primary-tint);box-shadow:0 0 0 1px var(--primary)}.choice.is-selected .dot{border-color:var(--primary)}.choice.is-selected .dot:after{transform:scale(1)}.choice.is-selected .opt-label{color:var(--primary-700)}.choice.rev-correct{border-color:var(--success);background:var(--success-tint)}.choice.rev-correct .opt-label{color:#15803d}.choice.rev-chosen-wrong{border-color:var(--danger);background:var(--danger-tint)}.choice.rev-chosen-wrong .opt-label{color:var(--danger)}.qcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh);scroll-margin-top:84px}.qcard-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 22px 0}.qno{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px}.qno .num{display:grid;place-items:center;min-width:28px;height:28px;padding:0 6px;border-radius:8px;background:var(--slate-100);color:var(--muted);font-size:14px}.qcard-body{padding:14px 22px 22px}.qprompt{font-size:17px;line-height:1.6;color:var(--text);margin-bottom:18px;text-wrap:pretty}.choices-grid{display:flex;flex-direction:column;gap:10px}.codeblock{font-family:var(--ff-mono);font-size:13.5px;line-height:1.7;background:#0f172a;color:#e2e8f0;border-radius:var(--r);padding:16px 18px;overflow-x:auto;white-space:pre;-moz-tab-size:2;tab-size:2}.codeblock .c-kw{color:#93c5fd}.codeblock .c-fn{color:#fcd34d}.codeblock .c-str{color:#86efac}.codeblock .c-cm{color:#64748b;font-style:italic}.nav-panel{width:268px;flex:0 0 268px}.nav-sticky{position:sticky;top:84px}.nav-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh);padding:18px}.nav-sec-title{font-size:13px;font-weight:600;color:var(--muted);margin:0 0 10px;letter-spacing:.01em}.nav-sec+.nav-sec{margin-top:18px;padding-top:18px;border-top:1px solid var(--line-2)}.qchips{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.qchip{aspect-ratio:1;min-width:0;padding:0;display:grid;place-items:center;font-size:14px;font-weight:600;font-variant-numeric:tabular-nums;border-radius:9px;cursor:pointer;border:1.5px solid var(--line);background:var(--surface);color:var(--muted);transition:all .14s}.qchip:hover{border-color:var(--secondary)}.qchip.answered{background:var(--success-tint);border-color:#bbf7d0;color:#15803d}.qchip.current{border-color:var(--primary);color:var(--primary-700);box-shadow:0 0 0 3px #3b82f62e}.qchip.optional{border-style:dashed}.qchip .chkmark{position:absolute}.nav-legend{display:flex;flex-wrap:wrap;gap:10px 14px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line-2);font-size:12.5px;color:var(--muted)}.nav-legend span{display:inline-flex;align-items:center;gap:6px}.legend-box{width:14px;height:14px;border-radius:4px;border:1.5px solid var(--line)}.legend-box.answered{background:var(--success-tint);border-color:#bbf7d0}.legend-box.current{border-color:var(--primary)}.progress{height:8px;border-radius:999px;background:var(--slate-100);overflow:hidden}.progress>i{display:block;height:100%;border-radius:999px;background:var(--success);transition:width .4s cubic-bezier(.2,.7,.3,1)}.timer{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 14px;border-radius:999px;font-family:var(--ff-mono);font-weight:600;font-size:17px;font-variant-numeric:tabular-nums;background:var(--slate-100);color:var(--text);border:1px solid var(--line);transition:background .25s,color .25s,border-color .25s}.timer svg{width:17px;height:17px}.timer.warning{background:var(--warning-tint);color:#b45309;border-color:#fcd9a4}.timer.danger{background:var(--danger-tint);color:var(--danger);border-color:#fca5a5;animation:tpulse 1s ease-in-out infinite}@keyframes tpulse{0%,to{box-shadow:0 0 #dc262600}50%{box-shadow:0 0 0 4px #dc262624}}.autosave{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:500;color:var(--muted)}.autosave svg{width:15px;height:15px}.autosave.saving{color:var(--slate-500)}.autosave.saved{color:var(--success)}.autosave.error{color:var(--danger)}.scrim{position:fixed;top:0;right:0;bottom:0;left:0;z-index:var(--z-modal);background:#0f172a73;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);display:grid;place-items:center;padding:24px;animation:fade .18s ease}@keyframes fade{0%{opacity:0}}.modal{width:100%;max-width:440px;background:var(--surface);border-radius:var(--r-xl);box-shadow:var(--sh-lg);padding:28px;animation:pop .22s cubic-bezier(.2,.8,.3,1)}@keyframes pop{0%{opacity:0;transform:translateY(8px) scale(.98)}}.modal-icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px}.modal-icon svg{width:24px;height:24px}.score-ring{position:relative;width:196px;height:196px}.score-ring .label{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;text-align:center}.attempt-item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:12px 14px;border-radius:var(--r);border:1px solid transparent;cursor:pointer;background:transparent;transition:background .14s,border-color .14s}.attempt-item:hover{background:var(--slate-50)}.attempt-item.active{background:var(--primary-tint);border-color:#bfdbfe}.sk{background:linear-gradient(90deg,#eef2f7 25%,#e2e8f0 37%,#eef2f7 63%);background-size:400% 100%;animation:shimmer 1.3s infinite;border-radius:6px}@keyframes shimmer{to{background-position:-200% 0}}.hr{height:1px;background:var(--line);border:0;margin:0}.scroll-y{overflow-y:auto}.scroll-y::-webkit-scrollbar{width:10px}.scroll-y::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:999px;border:3px solid var(--surface)}.metalist{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:14px}.metalist>span{white-space:nowrap}.metalist .sep{width:3px;height:3px;border-radius:50%;background:var(--slate-400)}.collapse-head{display:flex;align-items:center;gap:8px;cursor:pointer;color:var(--muted);font-size:14px;font-weight:600;-webkit-user-select:none;user-select:none}.collapse-head svg{width:16px;height:16px;transition:transform .18s}.collapse-head.open svg{transform:rotate(90deg)}._wrap_1un3v_1{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(60% 50% at 50% 0%,rgba(59,130,246,.08),transparent 70%),var(--bg)}._card_1un3v_12{width:100%;max-width:384px}._header_1un3v_17{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;margin-bottom:24px}._title_1un3v_26{font-size:22px;margin-top:4px}._dropdown_1uowu_1{position:absolute;top:calc(100% + 8px);right:0;min-width:230px;background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh-md);padding:6px;z-index:var(--z-dropdown)}._head_1uowu_14{padding:10px 12px 12px}._row_1uowu_18{display:flex;align-items:center;gap:10px;width:100%;padding:10px 12px;border:0;background:transparent;border-radius:8px;font:inherit;font-size:14px;font-weight:500;color:var(--text);cursor:pointer;text-align:left}._row_1uowu_18:hover{background:var(--slate-100)}._examCard_11mw3_1{display:flex;align-items:center;gap:20px}._examBody_11mw3_7{flex:1 1 auto;min-width:0}._examAction_11mw3_12{flex:0 0 auto}._empty_11mw3_16{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;padding:48px 24px}._errorCard_11mw3_25{display:flex;align-items:center;gap:10px;color:var(--danger);border-color:#fca5a5;background:var(--danger-tint);margin-bottom:16px;font-size:14px;font-weight:500}@media(max-width:560px){._examCard_11mw3_1{flex-direction:column;align-items:stretch}._examAction_11mw3_12 .btn{width:100%}}._examTop_lnm4y_1{gap:12px}._layout_lnm4y_5{display:flex;align-items:flex-start;gap:28px;padding-top:24px;padding-bottom:80px;max-width:1180px}._content_lnm4y_17{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:36px}._sectionTitle_lnm4y_25{font-size:16px;font-weight:700;color:var(--muted);padding-bottom:10px;border-bottom:1px solid var(--line)}@media(max-width:920px){._layout_lnm4y_5{flex-direction:column}._navPanel_lnm4y_14{width:100%;flex:1 1 auto;order:-1}._navPanel_lnm4y_14 .nav-sticky{position:static}._navPanel_lnm4y_14 .nav-legend{display:none}}@media(max-width:560px){._brandText_lnm4y_52,._submitLabel_lnm4y_55{display:none}}@media(max-width:680px){._autosaveHideMobile_lnm4y_60{display:none}}._pending_slh72_1{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;padding:32px 16px 12px}._scoreRow_slh72_10{display:flex;align-items:center;gap:32px;margin:24px 0 8px}._levelBox_slh72_17{flex:1 1 auto}._breakdown_slh72_21{margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}@media(max-width:560px){._scoreRow_slh72_10{flex-direction:column;gap:20px;text-align:center}}._layout_1qe52_1{display:flex;align-items:flex-start;gap:24px;padding-top:24px;padding-bottom:64px;max-width:1180px}._listPanel_1qe52_10{width:300px;flex:0 0 300px;position:sticky;top:88px}._gradeMain_1qe52_17{flex:1 1 auto;min-width:0}._gradeRow_1qe52_22{display:flex;align-items:center;gap:12px;margin-top:16px;padding-top:16px;border-top:1px solid var(--line-2);flex-wrap:wrap}@media(max-width:900px){._layout_1qe52_1{flex-direction:column}._listPanel_1qe52_10{width:100%;flex:1 1 auto;position:static}}