:root{--bg: #FFFFFF;--bg-soft: #F4F6F9;--text: #16181D;--text-sub: #454B54;--line: #C7CDD6;--brand: #1B4D8F;--brand-dark: #113463;--brand-soft: #E8F0FB;--source: #1F6B3E;--source-soft: #E6F4EC;--warn: #8A5300;--warn-soft: #FFF4DC;--danger: #A32020;--fs-body: 19px;--fs-lead: 21px;--fs-title: 27px;--fs-big: 32px;--lh: 1.75;--btn-h: 60px;--radius: 14px;--shadow: 0 3px 0 rgba(0,0,0,.18)}*{box-sizing:border-box;-webkit-tap-highlight-color:rgba(27,77,143,.2)}html,body,#root{height:100%}body{margin:0;background:var(--bg-soft);color:var(--text);font-family:Pretendard,Apple SD Gothic Neo,Malgun Gothic,system-ui,sans-serif;font-size:var(--fs-body);font-weight:500;line-height:var(--lh);word-break:keep-all}.app{max-width:520px;margin:0 auto;min-height:100%;background:var(--bg);padding:20px 18px 120px}.header{display:flex;align-items:baseline;gap:10px;padding:8px 0 18px;border-bottom:3px solid var(--brand);margin-bottom:22px}.header h1{font-size:var(--fs-title);margin:0;color:var(--brand);font-weight:800}.header .tagline{font-size:16px;color:var(--text-sub)}h2{font-size:var(--fs-title);line-height:1.45;margin:0 0 14px;font-weight:800}h3{font-size:var(--fs-lead);margin:0 0 10px;font-weight:700}p{font-size:var(--fs-body);margin:0 0 14px}.lead{font-size:var(--fs-lead)}.sub{font-size:17px;color:var(--text-sub)}.btn{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:var(--btn-h);padding:14px 18px;margin:0 0 14px;font-size:var(--fs-lead);font-weight:700;font-family:inherit;color:#fff;background:var(--brand);border:3px solid var(--brand-dark);border-radius:var(--radius);box-shadow:var(--shadow);cursor:pointer}.btn:active{transform:translateY(2px);box-shadow:0 1px #0000002e}.btn:focus-visible{outline:4px solid var(--warn);outline-offset:3px}.btn.secondary{background:#fff;color:var(--brand-dark);border-color:var(--brand)}.btn.choice{background:#fff;color:var(--text);border-color:var(--line);justify-content:flex-start;text-align:left}.btn.choice.selected{background:var(--brand-soft);border-color:var(--brand)}.btn.ghost{background:transparent;color:var(--text-sub);border-color:transparent;box-shadow:none;text-decoration:underline}.btn:disabled{opacity:.5;cursor:not-allowed}.card{background:#fff;border:2px solid var(--line);border-radius:var(--radius);padding:20px 18px;margin:0 0 18px}.ai-block{background:var(--brand-soft);border-left:8px solid var(--brand);border-radius:12px;padding:18px 16px;margin-bottom:4px}.ai-label{display:inline-block;font-size:16px;font-weight:800;color:var(--brand-dark);background:#fff;border:2px solid var(--brand);border-radius:999px;padding:3px 12px;margin-bottom:12px}.ai-question{font-size:23px;font-weight:800;line-height:1.6;margin:0}.ai-why{font-size:17px;color:var(--brand-dark);margin:12px 0 0}.source-block{background:var(--source-soft);border:2px dashed var(--source);border-radius:12px;padding:16px;margin-top:14px}.source-label{display:inline-block;font-size:16px;font-weight:800;color:#fff;background:var(--source);border-radius:999px;padding:3px 12px;margin-bottom:10px}.source-link{display:block;min-height:56px;display:flex;align-items:center;gap:8px;font-size:18px;font-weight:700;color:var(--source);background:#fff;border:2px solid var(--source);border-radius:10px;padding:12px 14px;margin-bottom:10px;text-decoration:underline}.source-empty{font-size:17px;color:var(--warn);font-weight:700}.signal{display:flex;gap:10px;align-items:flex-start;background:var(--warn-soft);border-left:6px solid var(--warn);border-radius:10px;padding:14px;margin-bottom:10px;font-size:18px}.badge{display:inline-block;font-size:16px;font-weight:700;padding:4px 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand-dark);border:2px solid var(--brand)}.mock-flag{display:inline-block;font-size:15px;font-weight:700;color:var(--warn);background:var(--warn-soft);border:2px solid var(--warn);border-radius:8px;padding:4px 10px;margin-bottom:12px}.progress{display:flex;gap:8px;margin-bottom:18px}.progress span{flex:1;height:10px;background:var(--line);border-radius:999px}.progress span.on{background:var(--brand)}.loading{text-align:center;padding:60px 0}.spinner{width:64px;height:64px;margin:0 auto 24px;border:8px solid var(--brand-soft);border-top-color:var(--brand);border-radius:50%;animation:spin 1.1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.spinner{animation-duration:3s}}.upload-box{border:3px dashed var(--brand);background:var(--brand-soft);border-radius:var(--radius);padding:26px 18px;text-align:center;margin-bottom:18px}.textarea{width:100%;min-height:130px;font-family:inherit;font-size:var(--fs-body);line-height:var(--lh);padding:14px;border:2px solid var(--line);border-radius:10px;resize:vertical}.textarea:focus{border-color:var(--brand);outline:3px solid var(--brand-soft)}.stat-row{display:flex;gap:12px;margin-bottom:16px}.stat{flex:1;text-align:center;background:var(--bg-soft);border:2px solid var(--line);border-radius:12px;padding:16px 8px}.stat .num{display:block;font-size:var(--fs-big);font-weight:800;color:var(--brand)}.stat .cap{font-size:16px;color:var(--text-sub)}.trend-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:17px}.trend-bar{height:20px;background:var(--brand);border-radius:999px;min-width:6px}.error-box{background:#fdecec;border:2px solid var(--danger);color:var(--danger);border-radius:10px;padding:14px;font-size:17px;font-weight:700;margin-bottom:14px}