:root{--color-mode: "dark";--ds-radius-card: 1rem;--ds-radius-pill: 999px;--ds-shadow-card: 0 20px 44px rgba(5, 4, 3, .28);--ds-panel-shadow: 0 16px 38px rgba(0, 0, 0, .24);--ds-bg: #121110;--ds-bg-soft: #1b1816;--ds-surface: rgba(28, 24, 19, .86);--ds-surface-strong: rgba(36, 31, 24, .96);--ds-text: #f7efe0;--ds-text-muted: #b6a58a;--ds-primary: #d9ac42;--ds-primary-strong: #f0c869;--ds-primary-contrast: #1f1706;--ds-border: rgba(217, 172, 66, .18);--ds-border-strong: rgba(217, 172, 66, .36);--ds-backdrop-one: rgba(177, 126, 21, .28);--ds-backdrop-two: rgba(80, 58, 18, .24);--layout-max: 1216px;--layout-width: min(var(--layout-max), calc(100% - 2rem) );--section-gap: 1.25rem;--toolbar-gap: .75rem;--bg-primary: var(--ds-bg);--bg-secondary: rgba(28, 24, 19, .9);--bg-tertiary: rgba(36, 31, 24, .96);--bg-elevated: rgba(47, 40, 31, .98);--glass-bg: rgba(24, 20, 16, .84);--glass-border: var(--ds-border);--surface-overlay: rgba(255, 244, 219, .04);--panel-code-bg: rgba(13, 10, 7, .94);--panel-code-text: #f7e7c3;--overlay-veil: rgba(7, 5, 3, .72);--text-primary: var(--ds-text);--text-secondary: #e6dac3;--text-muted: #c8b89e;--text-inverse: #19130a;--input-bg: rgba(42, 36, 29, .94);--input-border: rgba(217, 172, 66, .24);--input-text: var(--ds-text);--input-placeholder: #9e8e74;--accent-primary: var(--ds-primary);--accent-secondary: var(--ds-primary-strong);--accent: var(--ds-primary);--accent-hover: var(--ds-primary-strong);--accent-text: var(--ds-primary-contrast);--accent-gradient: linear-gradient(135deg, #f0c869 0%, #b4831f 100%);--accent-soft: rgba(217, 172, 66, .14);--accent-soft-strong: rgba(217, 172, 66, .22);--accent-highlight: rgba(240, 200, 105, .22);--bg-hover: rgba(49, 41, 32, .98);--focus-ring: rgba(240, 200, 105, .28);--success: #79d39c;--success-bg: rgba(78, 151, 103, .22);--success-strong: #c9f4d7;--warning: #f0c869;--warning-bg: rgba(176, 126, 21, .24);--warning-strong: #f9ddb1;--error: #f1a499;--error-bg: rgba(153, 70, 60, .26);--error-strong: #ffd8d1;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--space-xl: 32px;--space-2xl: 48px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-jp: "Noto Sans JP", serif;--font-cn: "Noto Sans SC", serif;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 2rem;--radius-sm: .8rem;--radius-md: var(--ds-radius-card);--radius-lg: var(--ds-radius-card);--radius-xl: var(--ds-radius-card);--radius-full: var(--ds-radius-pill);--shadow-sm: 0 8px 18px rgba(0, 0, 0, .18);--shadow-md: var(--ds-panel-shadow);--shadow-lg: 0 24px 54px rgba(0, 0, 0, .32);--shadow-glow: 0 12px 28px rgba(217, 172, 66, .22);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease;--z-overlay: 100;--z-modal: 200;--z-toast: 300}[data-theme=light]{--color-mode: "light";--ds-shadow-card: 0 18px 34px rgba(89, 63, 18, .12);--ds-panel-shadow: 0 12px 30px rgba(89, 63, 18, .12);--ds-bg: #fffdf9;--ds-bg-soft: #f9efe4;--ds-surface: rgba(246, 230, 201, .85);--ds-surface-strong: rgba(255, 253, 249, .95);--ds-text: #615044;--ds-text-muted: #866b55;--ds-primary: #b98a63;--ds-primary-strong: #866b55;--ds-primary-contrast: #fff8f0;--ds-border: rgba(115, 91, 75, .16);--ds-border-strong: rgba(115, 91, 75, .28);--ds-backdrop-one: rgba(221, 184, 112, .34);--ds-backdrop-two: rgba(255, 234, 190, .4);--bg-primary: var(--ds-bg);--bg-secondary: rgba(255, 250, 240, .84);--bg-tertiary: rgba(255, 255, 255, .94);--bg-elevated: #fffdf8;--glass-bg: rgba(255, 248, 236, .82);--glass-border: var(--ds-border);--surface-overlay: rgba(255, 255, 255, .42);--panel-code-bg: rgba(51, 38, 16, .94);--panel-code-text: #fff0cd;--overlay-veil: rgba(41, 28, 11, .38);--text-primary: var(--ds-text);--text-secondary: #554833;--text-muted: var(--ds-text-muted);--text-inverse: #fff7e6;--input-bg: rgba(255, 255, 255, .98);--input-border: rgba(89, 63, 18, .18);--input-text: var(--ds-text);--input-placeholder: #8e7b60;--accent-primary: var(--ds-primary);--accent-secondary: var(--ds-primary-strong);--accent: var(--ds-primary);--accent-hover: var(--ds-primary-strong);--accent-text: var(--ds-primary-contrast);--accent-gradient: linear-gradient(135deg, #c79a2f 0%, #8c6511 100%);--accent-soft: rgba(185, 138, 32, .12);--accent-soft-strong: rgba(185, 138, 32, .18);--accent-highlight: rgba(185, 138, 32, .16);--bg-hover: rgba(255, 247, 229, .98);--focus-ring: rgba(185, 138, 32, .24);--success: #1f7a56;--success-bg: rgba(31, 122, 86, .12);--success-strong: #175840;--warning: #8c6511;--warning-bg: rgba(185, 138, 32, .16);--warning-strong: #6d4e11;--error: #b2433b;--error-bg: rgba(178, 67, 59, .12);--error-strong: #872721;--shadow-sm: 0 6px 16px rgba(89, 63, 18, .08);--shadow-md: var(--ds-panel-shadow);--shadow-lg: 0 18px 40px rgba(89, 63, 18, .15);--shadow-glow: 0 10px 22px rgba(185, 138, 32, .2)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background:linear-gradient(180deg,var(--ds-bg-soft) 0%,var(--bg-primary) 22%,var(--bg-primary) 100%);color:var(--text-primary);line-height:1.5;min-height:100vh;min-height:100dvh;overflow-x:hidden}body.modal-open{overflow:hidden}body:before{content:"";position:fixed;inset:0;background:radial-gradient(circle at 14% 16%,var(--ds-backdrop-two) 0%,transparent 40%),radial-gradient(circle at 86% 10%,var(--ds-backdrop-one) 0%,transparent 32%),radial-gradient(circle at 50% 100%,rgba(255,255,255,.03) 0%,transparent 48%);pointer-events:none;z-index:-1;transition:opacity var(--transition-base)}[data-theme=light] body:before{background:radial-gradient(circle at 16% 12%,var(--ds-backdrop-two) 0%,transparent 42%),radial-gradient(circle at 85% 10%,var(--ds-backdrop-one) 0%,transparent 34%),radial-gradient(circle at 50% 100%,rgba(255,255,255,.36) 0%,transparent 48%)}#app{min-height:100vh;min-height:100dvh}.screen{display:none;min-height:100vh;min-height:100dvh}.screen.active{display:flex;flex-direction:column}.glass{background:var(--glass-bg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid var(--glass-border);box-shadow:var(--shadow-md)}.card{border-radius:var(--radius-lg);padding:var(--space-lg);box-shadow:var(--shadow-sm)}#login-screen{justify-content:center;align-items:center;padding:var(--space-lg)}.login-container{width:100%;max-width:400px;text-align:center}.logo-section{margin-bottom:var(--space-xl)}.logo-icon{width:min(240px,72vw);margin:0 auto var(--space-md)}.logo-icon img{width:100%;height:auto;display:block}.logo-icon .logo-light,[data-theme=light] .logo-icon .logo-dark{display:none}[data-theme=light] .logo-icon .logo-light{display:block}.logo-section h1{font-size:var(--text-2xl);font-weight:700;margin-bottom:var(--space-xs)}.subtitle{color:var(--text-muted);font-size:var(--text-sm)}.login-card{padding:var(--space-xl);border-radius:var(--radius-xl)}.login-card h2{font-size:var(--text-xl);margin-bottom:var(--space-sm)}.login-desc{color:var(--text-secondary);font-size:var(--text-sm);margin-bottom:var(--space-lg)}.login-divider{display:flex;align-items:center;margin:var(--space-lg) 0;color:var(--text-muted);font-size:var(--text-sm)}.login-divider:before,.login-divider:after{content:"";flex:1;height:1px;background:var(--glass-border)}.login-divider span{padding:0 var(--space-md)}.login-footer{margin-top:var(--space-xl);color:var(--text-muted);font-size:var(--text-xs)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);border:1px solid transparent;border-radius:var(--radius-full);font-family:inherit;font-size:var(--text-base);font-weight:600;cursor:pointer;transition:transform var(--transition-fast),background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast);touch-action:manipulation;-webkit-tap-highlight-color:transparent}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,select:focus-visible,input:focus-visible,.question-dot:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}@keyframes spin{to{transform:rotate(360deg)}}.loading-spinner{display:inline-block;width:1em;height:1em;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:spin .75s linear infinite;vertical-align:middle;margin-right:.5em}.btn-primary{background:var(--accent-gradient);color:var(--accent-text);box-shadow:var(--shadow-glow)}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-glow);filter:saturate(1.04)}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--glass-border)}.btn-secondary:hover:not(:disabled){background:var(--bg-hover);border-color:var(--ds-border-strong)}.btn-outline{background:transparent;color:var(--accent-primary);border-color:var(--glass-border)}.btn-outline:hover:not(:disabled){background:var(--accent-soft);color:var(--accent-secondary);border-color:var(--accent-primary)}.btn-lg{padding:var(--space-md) var(--space-lg);font-size:var(--text-lg);width:100%}.btn-xl{padding:var(--space-lg) var(--space-xl);font-size:var(--text-xl);width:100%;border-radius:var(--radius-lg)}.btn-sm{padding:var(--space-xs) var(--space-sm);font-size:var(--text-sm)}.btn-xs{padding:.35rem .7rem;font-size:var(--text-xs)}.btn-icon-only{width:44px;height:44px;padding:0;background:var(--bg-secondary);border-color:var(--glass-border);color:var(--text-primary);font-size:1rem;cursor:pointer}.btn-icon-only:hover:not(:disabled){background:var(--bg-hover);border-color:var(--ds-border-strong)}.btn-icon,.play-icon{font-size:1.2em}.app-header{display:flex;align-items:center;justify-content:space-between;width:var(--layout-width);margin:0 auto;padding:.85rem 1rem;position:sticky;top:0;z-index:50;border-radius:var(--radius-lg)}.header-left{display:flex;align-items:center;gap:var(--space-sm)}.logo-small{width:36px;height:36px;background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}.logo-small img{width:100%;height:100%;object-fit:contain;display:block;border-radius:var(--radius-sm)}.header-title{font-size:var(--text-lg);font-weight:600;color:var(--accent-secondary)}.header-right{display:flex;align-items:center;gap:var(--space-sm)}.user-badge{font-size:var(--text-sm);color:var(--text-secondary);max-width:220px;padding:.45rem .8rem;background:var(--bg-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-full);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.home-content{flex:1;width:min(1100px,var(--layout-width));margin:0 auto;padding:0 0 var(--space-xl);display:flex;flex-direction:column;gap:var(--section-gap)}.welcome-section h2{font-size:var(--text-xl);margin-bottom:var(--space-xs)}.welcome-section p{color:var(--text-secondary);font-size:var(--text-sm)}.card h3{font-size:var(--text-base);margin-bottom:var(--space-md);color:var(--text-primary);font-weight:500}.exam-tabs{display:flex;gap:var(--space-sm)}.exam-tab-wrapper{flex:1;display:flex;flex-direction:column;gap:var(--space-sm);padding:var(--space-md);background:var(--bg-tertiary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);position:relative}.exam-tab-wrapper:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}.exam-tab-wrapper.active{border-color:var(--accent-primary);background:var(--accent-soft)}.exam-tab-wrapper[aria-disabled=true]{opacity:.6;cursor:not-allowed}.exam-tab-header{display:flex;align-items:center;justify-content:center;gap:var(--space-sm)}.level-select{width:100%;padding:var(--space-xs) var(--space-sm);background:var(--bg-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:var(--text-sm);font-family:inherit;cursor:pointer;text-align:center}.level-select:focus{outline:none;border-color:var(--accent-primary)}.level-select:disabled{opacity:.5;cursor:not-allowed}.exam-flag{font-size:var(--text-xl)}.exam-name{font-weight:500}.coming-soon{position:absolute;top:-8px;right:-8px;background:var(--warning);color:var(--text-inverse);font-size:var(--text-xs);font-weight:600;padding:2px 6px;border-radius:var(--radius-full)}.exam-section-selector{margin:0;animation:slideDown .3s ease-out;padding:var(--space-lg);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.exam-section-selector h4{font-size:var(--text-sm);color:var(--text-secondary);margin-bottom:var(--space-sm);font-weight:500}.section-options{display:grid;grid-template-columns:1fr 1fr;grid-auto-rows:1fr;gap:var(--space-sm)}.section-option{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-md);background:var(--bg-tertiary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);gap:var(--space-xs);min-height:80px;color:var(--text-secondary);font-family:inherit}.section-option:hover{background:var(--bg-hover);transform:translateY(-2px)}.section-option.selected{border-color:var(--accent-primary);background:var(--accent-soft);color:var(--text-secondary)}.section-option i{font-size:var(--text-xl);margin-bottom:4px}.section-option span{font-size:var(--text-sm);font-weight:500;text-align:center}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.mode-cards{display:flex;flex-direction:column;gap:var(--space-sm)}.mode-card{display:flex;align-items:center;gap:var(--space-md);padding:var(--space-md);background:var(--bg-tertiary);border:2px solid transparent;border-radius:var(--radius-md);cursor:pointer;text-align:left;transition:all var(--transition-fast);width:100%;color:var(--text-secondary);font-family:inherit}.mode-card.selected{border-color:var(--accent-primary);background:var(--accent-soft)}.mode-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;font-size:var(--text-2xl);background:var(--bg-secondary);border-radius:var(--radius-md)}.mode-info h4{font-size:var(--text-base);margin-bottom:2px;color:var(--text-primary)}.mode-info p{font-size:var(--text-sm);color:var(--text-primary);opacity:.85}.provider-settings{overflow:hidden}.provider-settings.collapsed .settings-content{display:none}.settings-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:0;background:none;border:none;color:var(--text-secondary);font-size:var(--text-sm);cursor:pointer}.toggle-arrow{transition:transform var(--transition-fast)}.provider-settings:not(.collapsed) .toggle-arrow{transform:rotate(180deg)}.settings-content{display:flex;flex-direction:column;gap:var(--space-md);margin-top:var(--space-md);padding-top:var(--space-md);border-top:1px solid var(--glass-border)}.setting-group{display:flex;flex-direction:column;gap:var(--space-xs)}.setting-group label{font-size:var(--text-sm);color:var(--text-secondary)}.setting-group select{padding:var(--space-sm) var(--space-md);background:var(--input-bg);border:1px solid var(--input-border);border-radius:var(--radius-sm);color:var(--input-text);font-size:var(--text-base);font-family:inherit;cursor:pointer;transition:border-color var(--transition-fast)}.setting-group select:focus{outline:none;border-color:var(--accent-primary)}.setting-group select option{background:var(--bg-secondary);color:var(--text-primary)}.setting-group input{padding:var(--space-sm) var(--space-md);background:var(--input-bg);border:1px solid var(--input-border);border-radius:var(--radius-sm);color:var(--input-text);font-size:var(--text-base);font-family:inherit;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.setting-group input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--focus-ring)}.admin-panel{padding:var(--space-md);border:1px solid var(--glass-border);border-radius:var(--radius-md);background:linear-gradient(135deg,var(--surface-overlay),transparent),var(--bg-secondary)}.admin-panel-header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--space-md);margin-bottom:var(--space-md)}.admin-panel-header h4{margin:0 0 var(--space-xs);font-size:var(--text-lg);color:var(--text-primary)}.admin-panel-header p{margin:0;font-size:var(--text-sm);color:var(--text-secondary)}.status-badge{display:inline-flex;align-items:center;justify-content:center;min-height:2rem;padding:0 var(--space-sm);border-radius:999px;font-size:var(--text-xs);font-weight:700;white-space:nowrap}.status-badge.neutral{color:var(--text-secondary);background:var(--bg-tertiary)}.status-badge.success{color:var(--success-strong);background:var(--success-bg)}.status-badge.warning{color:var(--warning-strong);background:var(--warning-bg)}.status-badge.error{color:var(--error-strong);background:var(--error-bg)}.admin-actions{display:flex;flex-wrap:wrap;gap:var(--space-sm);margin-bottom:var(--space-md)}.admin-summary{display:grid;gap:var(--space-xs);margin-bottom:var(--space-md);color:var(--text-secondary);font-size:var(--text-sm)}.admin-summary p{margin:0}.admin-code-block{margin:0 0 var(--space-md);padding:var(--space-md);border-radius:var(--radius-md);background:var(--panel-code-bg);color:var(--panel-code-text);font-size:var(--text-sm);line-height:1.5;white-space:pre-wrap;word-break:break-word}.admin-health-results{display:grid;gap:var(--space-sm)}.admin-health-item{display:grid;gap:var(--space-xs);padding:var(--space-sm) var(--space-md);border:1px solid var(--glass-border);border-radius:var(--radius-md);background:var(--surface-overlay)}.admin-health-item header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-sm)}.admin-health-item strong{color:var(--text-primary);font-size:var(--text-sm)}.admin-health-meta,.admin-health-error{margin:0;font-size:var(--text-xs);color:var(--text-secondary)}@media(max-width:640px){.admin-panel-header,.admin-health-item header{flex-direction:column;align-items:flex-start}}.quick-links{display:flex;gap:var(--space-md);margin-top:.25rem}.quick-link{flex:1;display:flex;flex-direction:column;align-items:center;gap:var(--space-xs);padding:var(--space-md);background:var(--bg-secondary);border:1px solid var(--glass-border);border-radius:var(--radius-md);color:var(--text-secondary);font-size:var(--text-sm);cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-sm)}.quick-link:hover{color:var(--accent-secondary);border-color:var(--ds-border-strong);background:var(--bg-hover)}.quick-link span:first-child{font-size:var(--text-xl)}.home-col{display:flex;flex-direction:column;gap:var(--section-gap)}@media(min-width:1024px){.home-content{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(320px,.92fr);align-items:start}.welcome-section,.quick-links{grid-column:1 / -1}.home-col-left{grid-column:1}.home-col-right{grid-column:2}#btn-start-test{align-self:start}}#loading-screen{justify-content:center;align-items:center}.loading-container{text-align:center}.loader-icon{font-size:48px;margin-bottom:var(--space-md);color:var(--accent-primary)}.progress-container{width:100%;max-width:300px;margin:var(--space-lg) auto 0}.progress-bar{height:8px;background:var(--bg-tertiary);border-radius:var(--radius-full);overflow:hidden;position:relative}.progress-fill{height:100%;background:var(--accent-gradient);border-radius:var(--radius-full);transition:width .3s ease;width:0%}.progress-text{font-size:var(--text-sm);color:var(--text-secondary);margin-top:var(--space-sm);font-variant-numeric:tabular-nums}#loading-text{font-size:var(--text-lg);margin-bottom:var(--space-sm)}.loading-hint{color:var(--text-secondary);font-size:var(--text-sm)}#test-screen{display:none}#test-screen.active{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden}.test-header{display:flex;align-items:center;justify-content:space-between;width:var(--layout-width);margin:0 auto;padding:.85rem 1rem;flex-shrink:0;z-index:50;border-radius:var(--radius-lg)}.timer-bar{display:flex;gap:var(--space-lg)}.timer{display:flex;flex-direction:column;align-items:center}.timer-label{font-size:var(--text-xs);color:var(--text-secondary)}.timer-value{font-size:var(--text-lg);font-weight:700;font-variant-numeric:tabular-nums}.timer.warning .timer-value{color:var(--warning);animation:pulse 1s ease-in-out infinite}.timer.danger .timer-value{color:var(--error);animation:pulse .5s ease-in-out infinite}.test-actions{position:sticky;top:0;z-index:45;display:flex;justify-content:space-between;align-items:center;width:var(--layout-width);margin:0 auto;padding:.8rem 1rem;flex-shrink:0;border-radius:var(--radius-lg)}.mondai-nav{display:flex;align-items:center;justify-content:center;gap:var(--space-md);padding:var(--space-sm) 0;flex-shrink:0}.nav-btn{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border:1px solid var(--glass-border);border-radius:var(--radius-sm);color:var(--text-primary);font-size:var(--text-lg);cursor:pointer;transition:all var(--transition-fast)}.nav-btn:disabled{opacity:.3;cursor:not-allowed}.nav-btn:not(:disabled):hover{background:var(--accent-gradient);border-color:transparent;color:var(--accent-text)}.mondai-progress{font-size:var(--text-lg);font-weight:600}.mondai-sep{color:var(--text-muted);margin:0 var(--space-xs)}.test-content{flex:1;width:min(1100px,var(--layout-width));margin:0 auto;padding:0 0 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