:root{color-scheme:light;--bg:#f6f4ec;--card:#fff;--line:#dad6c4;--ink:#25281f;--muted:#5c6152;--brand:#3e5a44;--soft:#e9efe9;--danger:#a33b2f}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,"Noto Sans KR",sans-serif;line-height:1.65}
button,input,select{font:inherit}
.wrap{max-width:900px;margin:0 auto;padding:36px 20px 70px}
.hero,.panel{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:28px;margin-bottom:18px}
h1,h2,h3{line-height:1.35}.hero h1{margin:0 0 8px}.tag{margin:0;color:var(--brand);font-size:12px;font-weight:800;letter-spacing:.08em}.sub,.summary,.meta{color:var(--muted)}
.text-link{color:var(--brand);font-weight:700;text-decoration:none}
.tabs{display:flex;gap:8px;margin:0 0 18px}.tab{border:1px solid var(--line);border-radius:10px;padding:10px 15px;background:#fff;color:var(--ink);font-weight:700;cursor:pointer}.tab.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.search-form,.filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;align-items:end}
label,legend{font-weight:700}input[type="search"],select{display:block;width:100%;margin-top:6px;padding:12px;border:1px solid var(--line);border-radius:10px;background:#fff}
fieldset{margin:0;padding:8px 12px;border:1px solid var(--line);border-radius:10px}.radio{display:inline-flex;gap:6px;margin-right:14px;align-items:center}
.btn{display:inline-block;border:0;border-radius:10px;padding:12px 16px;background:var(--brand);color:#fff;font-weight:800;cursor:pointer;text-decoration:none}.btn:disabled{opacity:.45;cursor:not-allowed}.secondary{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.results{display:grid;gap:12px}.question-card{border:1px solid var(--line);border-radius:14px;padding:18px}.question-card h3{margin:8px 0}.chips{display:flex;flex-wrap:wrap;gap:6px}.chip{background:var(--soft);color:var(--brand);border-radius:999px;padding:3px 9px;font-size:12px;font-weight:700}
.options{display:grid;gap:8px;margin:16px 0}.option{width:100%;text-align:left;border:1px solid var(--line);border-radius:10px;padding:12px;background:#fff;cursor:pointer}.option.selected{border-color:var(--brand);background:var(--soft)}.option-list{margin:14px 0;padding-left:28px;display:grid;gap:7px}.option-list li{padding-left:4px;white-space:pre-wrap}.favorite-button.active{background:#fff5c8;border-color:#c89b22;color:#624900}.answer{border-left:4px solid var(--brand);background:var(--soft);padding:12px 14px;border-radius:8px}.wrong{color:var(--danger)}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.hidden{display:none!important}
.narrow{max-width:980px}.auth-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.stack{display:grid;gap:14px}.stack input{display:block;width:100%;margin-top:6px;padding:12px;border:1px solid var(--line);border-radius:10px}.stack small{display:block;color:var(--muted);font-weight:400}.consent{display:flex;gap:8px;align-items:flex-start}.consent input{width:auto;margin-top:6px}.notice{min-height:28px;padding:12px 16px;border-radius:10px;background:var(--soft);font-weight:700}.error-text{background:#fae9e6;color:var(--danger)}
.table-wrap{overflow:auto;margin-top:16px}table{width:100%;border-collapse:collapse;min-width:760px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:10px}td input,td select{width:100%;padding:8px;border:1px solid var(--line);border-radius:8px}td .btn{padding:8px 12px}
@media(max-width:640px){.wrap{padding:20px 14px 50px}.hero,.panel{padding:20px;border-radius:14px}.search-form,.filters,.auth-grid{grid-template-columns:1fr}.btn{width:100%}.tabs .tab{flex:1}.actions .btn{flex:1}}

/* 2026 renewal: calm blue study dashboard */
:root{--bg:#f4f7fb;--card:#fff;--line:#d6e1eb;--ink:#263746;--muted:#6a7b8b;--brand:#20364d;--blue:#3e72aa;--sky:#eaf4ff;--soft:#e8f7f0;--cream:#fff8e8;--danger:#a33b2f}
body{background:var(--bg)}
.wrap{max-width:1120px;padding:28px 16px 70px}
.hero,.panel{border-color:var(--line);box-shadow:0 10px 30px rgba(32,54,77,.07)}
.hero{background:linear-gradient(135deg,var(--sky),#effaf5,var(--cream))}
.tabs{flex-wrap:wrap}.tab{text-decoration:none;text-align:center;background:#fff;color:var(--ink)}.tab:hover{border-color:var(--blue);color:var(--blue)}.tab.active{background:var(--brand);border-color:var(--brand);color:#fff}
.btn{background:var(--brand)}.secondary{background:#fff;color:var(--brand)}
.chip{background:var(--sky);color:var(--blue)}
.question-card{background:#fff;box-shadow:0 5px 16px rgba(32,54,77,.05)}
.question-intro{display:block;margin-bottom:10px}
.stem-table{width:100%;min-width:0;margin:12px 0;border:1px solid var(--line);border-radius:12px;border-collapse:separate;border-spacing:0;overflow:hidden;font-size:16px}
.stem-table th{width:48px;text-align:center;background:var(--sky);color:var(--brand);vertical-align:top}.stem-table td{white-space:normal;vertical-align:top}.stem-table tr:last-child th,.stem-table tr:last-child td{border-bottom:0}
.guide-list{display:grid;gap:12px;padding-left:24px}.guide-list li{padding-left:6px}
@media(max-width:640px){.tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.tabs .tab{width:100%}.stem-table{font-size:14px}.stem-table th{width:40px}}