:root{--brand-main:#146b70;--brand-accent:#39a9a3;--accent:var(--brand-main);--bg:#f6f7f8;--card:#fff;--text:#1f2937;--muted:#6b7280;--border:#e5e7eb;--correct-bg:#ecfdf5;--correct-border:#10b981;--wrong-bg:#fef2f2;--wrong-border:#ef4444}*{box-sizing:border-box}*,:after,:before{--accent-strong:#10585c;--accent-soft:#e8f0f1}@supports (color:color-mix(in oklch,#000,#fff)){*,:after,:before{--accent-strong:color-mix(in srgb,var(--accent) 82%,#000);--accent-soft:color-mix(in srgb,var(--accent) 10%,#fff)}}body,html{margin:0;padding:0}@font-face{font-family:YuGothicM;font-weight:400;src:local("Yu Gothic Medium"),local("YuGothic-Medium"),local("游ゴシック Medium")}@font-face{font-family:YuGothicM;font-weight:700;src:local("Yu Gothic Bold"),local("YuGothic-Bold"),local("游ゴシック 太字")}body{background:var(--bg);color:var(--text);font-family:游ゴシック体,YuGothic,YuGothicM,Yu Gothic,ヒラギノ角ゴ ProN,Hiragino Kaku Gothic ProN,メイリオ,Meiryo,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}.container{max-width:720px;margin:0 auto;padding:16px 16px 48px}.site-header{background:var(--accent);color:#fff}.site-header-inner{max-width:720px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.site-title{display:inline-flex;align-items:center;gap:8px;min-width:0;font-size:1.05rem;font-weight:700}.site-logo{--brand-main:#fff;--brand-accent:hsla(0,0%,100%,.72)}.auth-area{gap:8px;font-size:.8rem}.auth-area,.site-nav{display:flex;align-items:center}.site-nav{gap:12px;margin-right:4px}.site-nav-link{color:hsla(0,0%,100%,.85);font-size:.8rem;text-decoration:none;white-space:nowrap}.site-nav-link:hover{color:#fff;text-decoration:underline}.auth-email{max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.btn-ghost{background:hsla(0,0%,100%,.15);color:#fff;border:1px solid hsla(0,0%,100%,.5);border-radius:6px;padding:4px 12px;font-size:.8rem}.btn-ghost:hover{background:hsla(0,0%,100%,.25)}.course-list{display:flex;flex-direction:column;gap:12px}.course-card{display:block;background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:12px;padding:16px;transition:box-shadow .15s}.course-card:hover{box-shadow:0 2px 8px rgba(0,0,0,.08)}.course-title{font-weight:700;font-size:1rem}.course-subtitle{color:var(--muted);font-size:.8rem;margin-top:4px}.course-meta{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;margin-top:8px;font-size:.75rem;color:var(--muted)}.course-rate{font-weight:700;font-size:.95rem;color:var(--accent)}.course-heading{font-size:1.25rem;font-weight:700;margin:8px 0 0}.subtitle{color:var(--muted);font-size:.9rem;margin:12px 0 20px}.mode-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:10px;gap:10px;margin-bottom:24px}.mode-link{display:block;background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:14px;font-weight:700;text-align:center;transition:box-shadow .15s}.mode-link:hover{box-shadow:0 2px 8px rgba(0,0,0,.08)}.mode-link .mode-desc{display:block;font-weight:400;font-size:.75rem;color:var(--muted);margin-top:4px}.section-title{font-size:1rem;font-weight:700;margin:24px 0 12px}.subject-list{display:flex;flex-direction:column;gap:10px}.subject-card{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px;transition:box-shadow .15s}.subject-card:hover{box-shadow:0 2px 8px rgba(0,0,0,.08)}.subject-name{font-weight:700;font-size:.95rem}.subject-code{margin-right:6px}.subject-code,.subject-stats{color:var(--muted);font-size:.75rem}.subject-stats{text-align:right;white-space:nowrap}.subject-rate{display:block;font-size:1rem;font-weight:700;color:var(--accent)}.progress-track{height:6px;background:var(--border);border-radius:3px;overflow:hidden;margin-top:8px}.progress-fill{height:100%;background:var(--accent);border-radius:3px;transition:width .25s}.quiz-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px;font-size:.85rem;color:var(--muted)}.question-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:18px;margin-top:12px}.question-text{font-size:1rem;font-weight:700;margin:0 0 16px;white-space:pre-wrap}.choices{display:flex;flex-direction:column;gap:10px}.choices.ox{flex-direction:row}.choice-btn{width:100%;text-align:left;background:var(--card);border:1.5px solid var(--border);border-radius:10px;padding:12px 14px;font-size:.95rem;line-height:1.5}.choices.ox .choice-btn{text-align:center;font-size:1.6rem;font-weight:700;padding:18px 0}.choice-btn:not(:disabled):hover{border-color:var(--accent)}.choice-btn:disabled{cursor:default}.choice-btn.correct{background:var(--correct-bg);border-color:var(--correct-border)}.choice-btn.wrong{background:var(--wrong-bg);border-color:var(--wrong-border)}.judge{font-size:1.05rem;font-weight:700;margin:16px 0 8px}.judge.ok{color:var(--correct-border)}.judge.ng{color:var(--wrong-border)}.explanation{background:var(--bg);border-radius:8px;padding:12px 14px;font-size:.9rem;white-space:pre-wrap}.quiz-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px}.flag-btn{background:none;border:1px solid var(--border);border-radius:8px;padding:8px 14px;font-size:.85rem;color:var(--muted)}.flag-btn.on{border-color:#f59e0b;color:#b45309;background:#fffbeb}.btn-primary{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:10px 24px;font-size:.95rem;font-weight:700}.btn-primary:hover{background:var(--accent-strong)}.btn-secondary{background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:10px 24px;font-size:.95rem}.summary-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;margin-top:12px;text-align:center}.summary-rate{font-size:2.2rem;font-weight:700;color:var(--accent)}.summary-detail{color:var(--muted);font-size:.9rem;margin-bottom:16px}.wrong-list{text-align:left;margin-top:20px}.wrong-item{border-top:1px solid var(--border);padding:10px 0;font-size:.85rem}.wrong-item .wq{font-weight:700}.wrong-item .wa{color:var(--muted);margin-top:2px}.summary-actions{gap:12px;margin-top:20px;flex-wrap:wrap}.flashcard,.summary-actions{display:flex;justify-content:center}.flashcard{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:28px 20px;min-height:220px;flex-direction:column;align-items:center;text-align:center;cursor:pointer;margin-top:16px;font-size:1rem;white-space:pre-wrap;transition:box-shadow .15s}.flashcard:hover{box-shadow:0 2px 10px rgba(0,0,0,.08)}.flashcard.back{background:var(--accent-soft);border-color:var(--accent)}.flashcard-hint{color:var(--muted);font-size:.75rem;margin-top:14px}.flashcard-nav{display:flex;justify-content:space-between;align-items:center;margin-top:16px;gap:12px}.login-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;margin-top:16px}.tab-row{display:flex;gap:8px;margin-bottom:16px}.tab-btn{flex:1 1;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:10px;font-size:.9rem}.tab-btn.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:700}.auth-heading{font-size:1.1rem;font-weight:700;margin-bottom:14px}.auth-switch{margin-top:14px;font-size:.85rem;color:var(--muted)}.link-btn{background:none;border:none;padding:0;font-size:inherit;color:var(--accent);font-weight:700;text-decoration:underline;cursor:pointer}.link-btn:hover{opacity:.8}.form-field{margin-bottom:12px}.form-field label{display:block;font-size:.8rem;color:var(--muted);margin-bottom:4px}.form-field input{width:100%;border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:1rem}.form-field input:focus{outline:2px solid var(--accent);outline-offset:-1px}.form-actions{display:flex;gap:10px;flex-wrap:wrap}.auth-msg{margin-top:12px;font-size:.85rem;color:var(--accent)}.auth-msg.error{color:var(--wrong-border)}.google-btn{width:100%;background:#fff;border:1px solid var(--border);border-radius:8px;padding:12px;font-size:.95rem;font-weight:700}.google-btn:hover{background:var(--bg)}.notice{background:#fffbeb;border:1px solid #f59e0b;border-radius:8px;padding:12px 14px;font-size:.85rem;color:#92400e}.admin-card{background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:12px;padding:16px}.admin-toggles{display:flex;flex-direction:column;gap:8px;margin-top:12px}.admin-toggle{display:flex;align-items:center;gap:8px;font-size:.9rem;cursor:pointer}.admin-toggle input{width:18px;height:18px;accent-color:var(--accent)}.admin-allowlist{margin-top:14px;padding-top:12px;border-top:1px dashed var(--border)}.admin-allowlist-title{font-size:.85rem;font-weight:700;margin-bottom:8px}.admin-empty{color:var(--muted);font-size:.8rem;margin:0 0 8px}.admin-list{list-style:none;margin:0 0 10px;padding:0;display:flex;flex-direction:column;gap:6px}.admin-list-item{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--bg);border-radius:8px;padding:8px 12px;font-size:.85rem}.admin-list-email{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.admin-self-badge{display:inline-block;background:var(--accent);color:#fff;border-radius:999px;font-size:.65rem;padding:1px 8px;margin-left:8px;vertical-align:middle}.admin-remove-btn{background:none;border:1px solid var(--border);border-radius:6px;padding:4px 10px;font-size:.75rem;color:var(--wrong-border);white-space:nowrap}.admin-remove-btn:not(:disabled):hover{background:var(--wrong-bg);border-color:var(--wrong-border)}.admin-remove-btn:disabled{color:var(--muted);cursor:default;opacity:.5}.admin-add-row{display:flex;gap:8px}.admin-add-row input{flex:1 1;min-width:0;border:1px solid var(--border);border-radius:8px;padding:8px 12px;font-size:.9rem}.admin-add-row input:focus{outline:2px solid var(--accent);outline-offset:-1px}.admin-note{color:var(--muted);font-size:.75rem;margin:12px 0 0}.admin-stats-heading{font-size:.9rem;font-weight:700;margin:16px 0 6px}.admin-stats-table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:0 0 4px;font-size:.8rem;-webkit-overflow-scrolling:touch}.admin-stats-table td,.admin-stats-table th{border:1px solid var(--border);padding:4px 8px;text-align:right;white-space:nowrap}.admin-stats-table th{background:var(--bg);font-weight:600;text-align:left}.site-footer{margin-top:40px;padding-top:16px;border-top:1px solid var(--border);font-size:.75rem;color:var(--muted)}.reset-btn{background:none;border:1px solid var(--border);border-radius:8px;padding:8px 14px;font-size:.8rem;color:var(--wrong-border);margin-bottom:12px}.reset-btn:hover{background:var(--wrong-bg);border-color:var(--wrong-border)}.empty-note{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px;text-align:center;color:var(--muted);margin-top:16px}.back-link{display:inline-block;color:var(--muted);font-size:.85rem;margin-bottom:8px}.back-link:hover{color:var(--accent)}@media (max-width:420px){.subject-card{flex-direction:column;align-items:stretch}.subject-stats{text-align:left;display:flex;align-items:baseline;gap:10px}}.chat-entry-card{--accent:var(--brand-main);margin-bottom:12px}.chat-beta-badge{display:inline-block;margin-left:8px;padding:1px 8px;border-radius:999px;background:var(--accent);color:#fff;font-size:.7rem;vertical-align:middle}.chat-heading{font-size:1.25rem;margin:16px 0 4px}.chat-shell{display:flex;flex-direction:column;min-height:calc(100vh - 150px);min-height:calc(100dvh - 150px)}body:has(.chat-shell){min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}body:has(.chat-shell) main.container{flex:1 1 auto;display:flex;flex-direction:column;width:100%;padding-bottom:0}body:has(.chat-shell) .chat-shell{flex:1 1 auto;min-height:0}.chat-thread{flex:1 1 auto;display:flex;flex-direction:column;gap:12px;padding-bottom:12px}.chat-empty{background:var(--card);border:1px dashed var(--border);border-radius:12px;padding:16px;color:var(--muted);font-size:.88rem}.chat-hero{display:flex;flex-direction:column;gap:14px;margin:12px 0 8px}.chat-hero-title{font-size:1.2rem;line-height:1.5;margin:8px 0 0;text-align:center}.chat-hero-sub{font-size:.85rem}.chat-hero-sub,.chat-restoring-note{margin:0;text-align:center;color:var(--muted)}.chat-restoring-note{font-size:.75rem}.chat-frame-cards{display:flex;flex-direction:column;gap:8px}.chat-frame-card{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:12px 14px}.chat-frame-card:hover{border-color:var(--accent)}.chat-frame-card.on{border:2px solid var(--accent);background:var(--accent-soft);padding:11px 13px}.chat-frame-title{font-weight:700;font-size:.95rem}.chat-frame-card.on .chat-frame-title{color:var(--accent-strong)}.chat-frame-desc{font-size:.78rem;color:var(--muted)}.chat-examples{display:flex;flex-direction:column;gap:6px}.chat-examples-label{font-size:.75rem;color:var(--muted)}.chat-examples.in-thread{margin:2px 0 4px 8px}.chat-example-card{text-align:left;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:9px 12px;font-size:.85rem;color:var(--text)}.chat-example-card:before{content:"💬 "}.chat-example-card:hover{border-color:var(--accent);color:var(--accent-strong)}.chat-mode-tag{font-size:.72rem;color:var(--muted);margin-bottom:6px}.chat-bubble{border-radius:12px;padding:12px 14px;font-size:.92rem;white-space:pre-wrap;word-break:break-word}.chat-bubble.user{align-self:flex-end;max-width:85%;background:var(--accent);color:#fff}.chat-bubble.assistant{align-self:stretch;background:var(--card);border:1px solid var(--border);scroll-margin-top:12px}.chat-loading{color:var(--muted);display:flex;align-items:center;gap:8px}.chat-loading-dot{width:9px;height:9px;border-radius:50%;background:var(--accent);flex-shrink:0;animation:chat-pulse 1.2s ease-in-out infinite}@keyframes chat-pulse{0%,to{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}.chat-sources{margin-top:12px;border-top:1px solid var(--border);padding-top:10px;white-space:normal}.chat-sources>summary{font-size:.78rem;font-weight:700;color:var(--muted);cursor:pointer;list-style:none;display:flex;align-items:center;gap:5px}.chat-sources>summary::-webkit-details-marker{display:none}.chat-sources>summary:before{content:"▶";font-size:.62rem;color:var(--accent);transition:transform .15s ease}.chat-sources[open]>summary:before{transform:rotate(90deg)}.chat-sources>summary:hover{color:var(--accent)}.chat-sources-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}.source-card{display:flex;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:.8rem;line-height:1.5}.source-card:hover{border-color:var(--accent)}.source-card:after{content:"↗";-webkit-margin-start:auto;margin-inline-start:auto;-webkit-padding-start:6px;padding-inline-start:6px;color:var(--muted);flex-shrink:0}.source-sid{color:var(--accent);font-weight:700;flex-shrink:0}.source-body{display:flex;flex-direction:column;min-width:0}.source-title{font-weight:700}.source-detail{color:var(--muted);font-size:.75rem}.chat-actions-row{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px}.chat-action-card{background:var(--accent-soft);border:1px solid #c9dcdd;border:1px solid color-mix(in srgb,var(--accent) 28%,#fff);color:var(--accent-strong);border-radius:8px;padding:6px 12px;font-size:.8rem}.chat-clarify{margin-top:12px;padding-top:12px;border-top:1px dashed var(--border)}.chat-clarify-question{margin:0 0 8px;font-size:.85rem;font-weight:700;color:var(--text)}.chat-clarify-options{display:flex;flex-direction:column;gap:8px;max-width:480px}.chat-clarify-option{min-height:44px;width:100%;background:var(--card);border:1px solid color-mix(in srgb,var(--accent) 32%,#fff);color:var(--accent-strong);border-radius:10px;padding:10px 14px;font-size:.9rem;font-weight:600;text-align:left;cursor:pointer}.chat-clarify-option:hover{border-color:var(--accent);background:var(--accent-soft)}.chat-clarify-item+.chat-clarify-item{margin-top:14px}.chat-clarify-option.is-selected{border-color:var(--accent);background:var(--accent);color:#fff}.chat-clarify-option.is-selected:hover,.chat-clarify-submit{background:var(--accent)}.chat-clarify-submit{margin-top:14px;min-height:44px;width:100%;max-width:480px;border:1px solid var(--accent);color:#fff;border-radius:10px;padding:10px 14px;font-size:.9rem;font-weight:700;cursor:pointer}.chat-clarify-submit:disabled{background:var(--card);border-color:var(--border);color:var(--muted);cursor:not-allowed}.chat-clarify-note{margin:8px 0 0;font-size:.72rem;color:var(--muted)}.chat-disclaimer{margin:10px 0 0;font-size:.72rem;color:var(--muted)}.chat-error{color:var(--wrong-border);font-size:.85rem}.chat-sources-incomplete{margin:8px 0 0;font-size:.72rem;color:var(--muted)}.chat-reset-row{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin:0 0 8px}.chat-reset-note{font-size:.75rem;color:var(--muted);margin-right:auto}.chat-reset{background:var(--card);color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:5px 14px;font-size:.78rem;cursor:pointer}.chat-reset:hover:not(:disabled){color:var(--accent);border-color:var(--accent)}.chat-reset:disabled{opacity:.5;cursor:default}.chat-dock{position:-webkit-sticky;position:sticky;bottom:0;background:var(--bg);padding:8px 0 calc(10px + env(safe-area-inset-bottom, 0px));box-shadow:0 -8px 12px -10px rgba(0,0,0,.12)}.chat-input-row{display:flex;gap:8px;align-items:flex-end}.chat-input{flex:1 1;border:1px solid var(--border);border-radius:14px;padding:12px 14px;font:inherit;font-size:16px;resize:none;min-height:48px;max-height:160px;background:var(--card)}.chat-input:focus{outline:2px solid var(--accent);outline-offset:-1px}.chat-send{flex-shrink:0;width:44px;height:44px;margin-bottom:2px;border:none;border-radius:50%;background:var(--accent);color:#fff;font-size:1.25rem;font-weight:700;line-height:1;display:flex;align-items:center;justify-content:center}.chat-send:hover:not(:disabled){background:var(--accent-strong)}.chat-send:disabled{background:var(--border);color:#fff;cursor:default}.chat-dock-note{margin:6px 0 0;font-size:.78rem;line-height:1.5;color:var(--muted);display:flex;align-items:baseline;gap:8px}.chat-remaining{flex-shrink:0;background:var(--card);border:1px solid var(--border);border-radius:999px;padding:1px 8px;white-space:nowrap}.chat-sources-link{color:var(--accent);text-decoration:underline;margin-left:4px}.chat-limit-notice p{margin:0}.chat-login-link{color:var(--accent);text-decoration:underline;margin:0 2px}.chat-modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;padding:24px;z-index:50}.chat-modal{background:var(--card);border-radius:12px;padding:20px;max-width:420px;font-size:.9rem}.chat-modal .btn-secondary{margin-top:12px}.source-doc-card{background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:12px;padding:16px;scroll-margin-top:16px}.source-doc-head{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px}.source-doc-type{background:var(--accent);color:#fff;border-radius:4px;padding:1px 8px;font-size:.72rem}.source-doc-year{background:var(--bg);border:1px solid var(--border);color:var(--muted);border-radius:4px;padding:1px 8px;font-size:.72rem}.source-doc-title{font-weight:700;font-size:.95rem;line-height:1.5}.source-doc-meta{margin:10px 0 8px;display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:4px 12px;gap:4px 12px;font-size:.8rem}.source-doc-meta div{display:flex;gap:6px}.source-doc-meta dt{color:var(--muted);flex-shrink:0}.source-doc-meta dd{margin:0}.source-doc-link{display:inline-block;font-size:.82rem;color:var(--accent);text-decoration:underline}.source-highlight{margin-top:12px;background:#fdf9e8;border:1px solid #ecd97f;border-radius:8px;padding:12px}.source-highlight-title{font-size:.78rem;font-weight:700;color:#8a6d1a;margin-bottom:6px}.source-highlight-body{margin:0;font-size:.8rem;white-space:pre-wrap;word-break:break-word}.source-section{margin-bottom:24px}.source-section-note{margin:4px 0 12px;font-size:.78rem;color:var(--muted)}.source-restricted-note{color:#a4553a;font-weight:400}.source-doc-restricted{background:#a4553a;color:#fff;border-radius:4px;padding:1px 8px;font-size:.72rem}.chat-answer-md{white-space:normal;line-height:1.75}.chat-answer-md>:first-child{margin-top:0}.chat-answer-md>:last-child{margin-bottom:0}.chat-answer-md p{margin:0 0 10px}.chat-answer-md h3,.chat-answer-md h4{font-size:.95rem;margin:14px 0 6px;padding-left:8px;border-left:3px solid var(--accent)}.chat-answer-md ol,.chat-answer-md ul{margin:6px 0 10px;padding-left:22px}.chat-answer-md li,.chat-answer-md li>ol,.chat-answer-md li>ul{margin:3px 0}.chat-answer-md strong{color:var(--accent-strong)}.chat-answer-md code{font-size:.85em}.chat-answer-md code,.chat-cite{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:0 4px}.chat-cite{display:inline;font-size:12px;color:var(--muted);white-space:normal;overflow-wrap:anywhere;box-decoration-break:clone;-webkit-box-decoration-break:clone;text-decoration:none;vertical-align:1px}.chat-cite,.chat-cite:after{-webkit-margin-start:2px;margin-inline-start:2px}.chat-cite:after{content:"↗";font-size:.9em}.chat-cite:focus-visible,.chat-cite:hover{color:var(--accent);border-color:var(--accent);text-decoration:underline}.chat-answer-md a:not(.chat-cite){color:var(--accent);text-decoration:underline}.chat-answer-md blockquote{margin:8px 0;padding:4px 12px;border-left:3px solid var(--border);color:var(--muted)}.chat-answer-md table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:8px 0 12px;font-size:.85rem;-webkit-overflow-scrolling:touch}.chat-answer-md td,.chat-answer-md th{border:1px solid var(--border);padding:5px 10px;white-space:nowrap;text-align:left}.chat-answer-md th{background:var(--bg);font-weight:700}.source-check-note{margin:8px 0 0;padding-top:8px;border-top:1px dashed var(--border);font-size:.78rem;color:#a4553a}.q-badges{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:10px}.origin-tag{display:inline-block;border-radius:999px;padding:2px 10px;font-size:.72rem;font-weight:700;line-height:1.6;border:1px solid;white-space:nowrap}.origin-tag.past_exam{background:#eef2ff;border-color:#6366f1;color:#3730a3}.origin-tag.ai_generated{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-strong)}.section-title .origin-tag{margin-left:8px;font-weight:400;vertical-align:middle}.exam-years{font-size:.75rem;color:var(--muted)}.ai-answer-warning{background:#fffbeb;border:1.5px solid #d97706;border-radius:8px;padding:10px 14px;margin:0 0 12px;color:#7c4a03;font-size:.85rem}.ai-answer-warning.low{background:#fef2f2;border-color:#dc2626;border-left-width:5px;color:#7f1d1d}.ai-answer-warning.low strong{color:#b91c1c}.ai-answer-warning.low .ai-answer-basis{border-top-color:#dc2626}.ai-answer-warning strong{display:block;font-size:.92rem;margin-bottom:4px}.ai-answer-warning p{margin:0}.ai-answer-basis{margin-top:6px!important;padding-top:6px;border-top:1px dashed #d97706;font-size:.8rem}.ai-answer-tag{display:inline-block;margin-left:8px;border-radius:999px;padding:1px 8px;background:#fffbeb;border:1px solid #d97706;color:#7c4a03;font-size:.7rem;font-weight:700}.ai-answer-tag.low{background:#fef2f2;border-color:#dc2626;color:#b91c1c}.kasan-verdict{display:inline-flex;align-items:center;gap:8px;border-radius:8px;padding:6px 14px;margin-bottom:10px;font-weight:700;font-size:.92rem;border:1px solid}.kasan-verdict-mark{font-size:1.05rem}.kasan-verdict.v-yes{background:#ecfdf5;border-color:#10b981;color:#047857}.kasan-verdict.v-conditional{background:#fefce8;border-color:#eab308;color:#854d0e}.kasan-verdict.v-no{background:#fef2f2;border-color:#ef4444;color:#b91c1c}.kasan-verdict.v-insufficient{background:var(--bg);border-color:var(--border);color:var(--muted)}.chat-disclaimer.kasan{color:#a4553a;font-weight:400}.chat-disclaimer.care{color:#14666b;font-weight:400}.about-page{padding-top:8px}.about-hero{text-align:center;padding:28px 0 4px}.about-hero-title{font-size:1.4rem;line-height:1.5;margin:0 0 10px}.about-hero-sub{color:var(--muted);font-size:.92rem;margin:0 auto 20px;max-width:34em}.about-cta{display:inline-block;background:var(--accent);color:#fff;border-radius:999px;padding:13px 30px;font-weight:700;font-size:1rem;box-shadow:0 2px 8px rgba(20,107,112,.25)}.about-cta:hover{background:var(--accent-strong)}.about-cta-note{font-size:.76rem;color:var(--muted);margin:8px 0 0}.about-section{margin-top:44px}.about-section-title{font-size:1.12rem;text-align:center;margin:0 0 16px}.about-pain-list{display:flex;flex-direction:column;gap:10px}.about-pain-card{background:var(--card);border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:12px;padding:14px 16px}.about-pain-quote{font-weight:700;margin:0}.about-pain-body{font-size:.85rem;color:var(--muted);margin:6px 0 0}.about-lead{text-align:center;font-size:.92rem;margin:20px 0 0;line-height:1.9}.about-demo{display:flex;flex-direction:column;gap:12px}.about-demo .chat-bubble{white-space:normal}.about-demo-answer p{margin:0 0 10px}.about-demo-answer p:last-child{margin-bottom:0}.about-demo-note{text-align:center;font-size:.82rem;color:var(--muted);margin:12px 0 0}.about-trust-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.about-trust-list li{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:13px 16px;font-size:.88rem}.about-trust-list strong{display:block;color:var(--accent-strong);margin-bottom:2px}.about-sources-link-row{text-align:center;margin:14px 0 0}.about-text-link{color:var(--accent);font-size:.88rem;font-weight:700;text-decoration:underline}.about-text-link:hover{color:var(--accent-strong)}.about-steps{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.about-step{display:flex;align-items:flex-start;gap:12px;background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 16px}.about-step-num{width:28px;height:28px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:.9rem}.about-step-title{font-weight:700;margin:2px 0}.about-step-body{font-size:.85rem;color:var(--muted);margin:0}.about-faq{display:flex;flex-direction:column;gap:10px}.about-faq-item{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:13px 16px}.about-faq-q{font-weight:700;margin:0}.about-faq-q:before{content:"Q. ";color:var(--accent)}.about-faq-a{font-size:.88rem;margin:6px 0 0;color:var(--text)}.about-final{text-align:center;margin-top:48px}.about-final-lead{font-size:.95rem;margin:0 0 16px}@media (min-width:640px){.about-hero-title{font-size:1.6rem}.about-pain-list{flex-direction:row}.about-pain-card{flex:1 1}.about-steps{flex-direction:row}.about-step{flex:1 1;flex-direction:column}}.global-footer{border-top:1px solid var(--border);margin-top:24px;background:var(--bg)}.global-footer-inner{max-width:720px;margin:0 auto;padding:20px 16px 28px}.global-footer-nav{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.8rem}.global-footer-nav a{color:var(--muted)}.global-footer-nav a:hover{color:var(--accent);text-decoration:underline}.global-footer-copy{margin:14px 0 0;font-size:.75rem;color:var(--muted)}body:has(.chat-shell) .global-footer{display:none}.chat-dock-legal{margin:4px 0 0;font-size:.68rem;line-height:1.5;color:var(--muted);display:flex;flex-wrap:wrap;gap:2px 12px}.chat-dock-legal a{color:var(--muted);text-decoration:underline}.chat-dock-legal a:hover{color:var(--accent)}.legal-page{padding-top:8px;font-size:.92rem}.legal-page h1{font-size:1.35rem;margin:16px 0 4px}.legal-date{color:var(--muted);font-size:.8rem;margin:0 0 20px}.legal-page section{margin-top:28px}.legal-page h2{font-size:1.02rem;color:var(--accent-strong);border-left:4px solid var(--accent);padding-left:10px;margin:0 0 10px}.legal-page h3{font-size:.92rem;margin:16px 0 6px}.legal-page p{margin:8px 0}.legal-page ol,.legal-page ul{margin:8px 0;padding-left:22px}.legal-page li{margin:6px 0}.legal-page a{color:var(--accent);text-decoration:underline;margin:0 2px}.company-table{margin:20px 0 0;border:1px solid var(--border);border-radius:10px;background:var(--card);overflow:hidden}.company-row{display:flex;border-top:1px solid var(--border)}.company-row:first-child{border-top:none}.company-table dt{flex:0 0 110px;padding:12px 14px;background:var(--accent-soft);font-weight:700;font-size:.85rem}.company-table dd{margin:0;padding:12px 14px;flex:1 1}.company-note{color:var(--muted);font-size:.8rem}@media (max-width:420px){.company-row{flex-direction:column}.company-table dt{flex:none;padding-bottom:4px}.company-table dd{padding-top:4px}}.auth-consent{margin:14px 0 0;font-size:.78rem;line-height:1.6;color:var(--muted)}.auth-consent a{color:var(--accent);text-decoration:underline}.faq-page{padding-top:8px}.faq-breadcrumb{display:flex;align-items:center;gap:6px;margin:8px 0 4px;font-size:.78rem;color:var(--muted);min-width:0}.faq-breadcrumb a{color:var(--muted);text-decoration:underline;white-space:nowrap}.faq-breadcrumb a:hover{color:var(--accent)}.faq-breadcrumb-current{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.faq-article{font-size:.92rem;line-height:1.85}.faq-article h1{font-size:1.3rem;line-height:1.5;margin:12px 0 16px}.faq-article h2{font-size:1.02rem;color:var(--accent-strong);border-left:4px solid var(--accent);padding-left:10px;margin:28px 0 10px}.faq-article p{margin:10px 0}.faq-article ol,.faq-article ul{margin:8px 0 12px;padding-left:22px}.faq-article li{margin:4px 0}.faq-article strong{color:var(--accent-strong)}.faq-article a{color:var(--accent);text-decoration:underline}.faq-article blockquote{margin:16px 0;padding:8px 12px;border-left:3px solid var(--border);background:var(--card);border-radius:0 8px 8px 0;color:var(--muted);font-size:.85rem}.faq-article blockquote p{margin:0}.faq-article hr{margin:24px 0;border:none;border-top:1px solid var(--border)}.faq-article table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:8px 0 12px;font-size:.85rem;-webkit-overflow-scrolling:touch}.faq-article td,.faq-article th{border:1px solid var(--border);padding:5px 10px;text-align:left}.faq-article th{background:var(--bg);font-weight:700}.faq-category{margin-top:28px}.faq-category-title{font-size:1.05rem;color:var(--accent-strong);border-left:4px solid var(--accent);padding-left:10px;margin:0 0 6px}.faq-category-description{color:var(--muted);font-size:.82rem;margin:0 0 12px}.faq-related{margin-top:28px}.faq-related-title{font-size:1.02rem;color:var(--accent-strong);border-left:4px solid var(--accent);padding-left:10px;margin:0 0 10px}.faq-related-list{margin:0;padding-left:22px;font-size:.9rem;line-height:1.7}.faq-related-list li{margin:6px 0}.faq-related-list a{color:var(--accent);text-decoration:underline}.faq-related-list a:hover{color:var(--accent-strong)}.faq-kango{margin-top:24px;padding:12px 14px;background:var(--card);border:1px solid var(--border);border-radius:10px;font-size:.8rem;color:var(--muted)}.faq-kango p{margin:0}.faq-kango a{color:var(--accent);text-decoration:underline}.faq-back-row{margin:20px 0 0;font-size:.85rem}.chat-share-button{cursor:pointer}.chat-share-modal{max-width:460px;width:100%}.chat-share-title{margin:0 0 10px;font-size:1rem;font-weight:700}.chat-share-warning{margin:0 0 10px;padding:10px 12px;background:#fff7ed;border:1px solid #fdba74;border-radius:8px;font-size:.85rem;line-height:1.6}.chat-share-question{margin:0 0 12px;padding:8px 12px;border-left:3px solid var(--border);color:var(--muted);font-size:.85rem;line-height:1.6;max-height:7.5em;overflow-y:auto;word-break:break-word}.chat-share-buttons{display:flex;flex-direction:column;gap:8px;margin-top:12px}.chat-share-buttons .btn-primary,.chat-share-buttons .btn-secondary{width:100%}.chat-share-copied{margin:0 0 8px;color:var(--accent-strong);font-size:.9rem;font-weight:700}.chat-share-url{margin:0;padding:8px 12px;background:var(--bg);border:1px solid var(--border);border-radius:8px;font-size:.8rem;word-break:break-all;-webkit-user-select:all;-moz-user-select:all;user-select:all}.chat-share-note{margin:10px 0 0;font-size:.75rem;color:var(--muted)}.share-page{max-width:720px;margin:0 auto;padding:16px 0 40px;display:flex;flex-direction:column;gap:12px}.share-lead{margin:0;font-size:.8rem;color:var(--muted)}.share-page .chat-bubble{max-width:100%}.share-disclaimer{padding:10px 12px;background:var(--card);border:1px solid var(--border);border-radius:8px;font-size:.78rem;color:var(--muted);line-height:1.7}.share-disclaimer p{margin:0}.share-disclaimer p+p{margin-top:4px}.share-cta{margin-top:8px;text-align:center}.share-cta-button{display:inline-block;text-decoration:none}.share-cta-note{margin:8px 0 0;font-size:.78rem;color:var(--muted)}