:root{--bg: #0b0f1a;--bg-soft: #121829;--card: #161d31;--border: #263149;--text: #e8edf7;--muted: #93a1bf;--accent: #6ea8fe;--track: #24304a;--danger: #ff6b6b;--ok: #3ddc84;--accent-gradient: linear-gradient(135deg, #6ea8fe 0%, #00d9ff 100%);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 8px 16px rgba(0, 0, 0, .4);color-scheme:dark}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:radial-gradient(1400px 700px at 50% -10%,rgba(22,32,58,.8) 0%,var(--bg) 50%);color:var(--text);font-family:Pretendard,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Apple SD Gothic Neo,Noto Sans KR,sans-serif;-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.5}.app{min-height:100%;display:flex;flex-direction:column;max-width:860px;margin:0 auto;padding:0 20px}.topbar{display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100;background:#0b0f1abf;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid rgba(38,49,73,.4);margin:0 -20px;padding:20px}.logo{font-weight:800;font-size:20px;letter-spacing:-.02em;background:var(--accent-gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;transition:transform .2s ease}.logo:hover{transform:scale(1.02)}.lang{background:#161d3199;border:1px solid rgba(38,49,73,.5);color:var(--text);border-radius:999px;padding:8px 16px;cursor:pointer;font-size:13px;font-weight:600;transition:all .2s ease}.lang:hover{border-color:var(--accent);background:#2631494d}.lang:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.hero{display:flex;flex-direction:column;align-items:center;text-align:center;padding:40px 0 48px}.logo{text-decoration:none;color:var(--text)}.nav{display:flex;align-items:center;gap:24px}.nav>a{color:var(--muted);text-decoration:none;font-size:14px;font-weight:600;transition:color .2s ease;position:relative}.nav>a:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--accent);transition:width .3s ease}.nav>a:hover{color:var(--accent)}.nav>a:hover:after{width:100%}@media (max-width: 560px){.nav>a{display:none}}.engine{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--muted);background:#16203a80;border:1px solid rgba(110,168,254,.2);border-radius:999px;padding:8px 16px;margin-bottom:20px;transition:all .3s ease}.engine.ready{color:var(--ok);border-color:#3ddc8480;background:#3ddc8414}.engine-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 1.1s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1.1)}}.usecases{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:24px}.usecase-chip{background:#161d3180;border:1px solid rgba(38,49,73,.4);color:var(--muted);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;transition:all .2s ease}.usecase-chip:hover{border-color:#6ea8fe80;color:var(--accent);background:#6ea8fe0d}.hero h1{font-size:clamp(28px,5.5vw,48px);line-height:1.2;letter-spacing:-.04em;font-weight:800;margin:12px 0 16px;max-width:18em;word-break:keep-all;text-wrap:balance}.privacy{color:var(--muted);font-size:14px;margin:0 0 32px;font-weight:500}.dropzone{width:100%;border:2px dashed rgba(110,168,254,.3);border-radius:24px;background:linear-gradient(135deg,#161d3166,#1218294d);padding:56px 24px;cursor:pointer;transition:all .3s ease;-webkit-user-select:none;user-select:none}.dropzone:hover{border-color:#6ea8fe99;background:linear-gradient(135deg,#16203a99,#181e3080)}.dropzone.dragging{border-color:var(--accent);border-width:2px;background:linear-gradient(135deg,#6ea8fe1a,#00d9ff14);transform:scale(1.015);box-shadow:0 0 20px #6ea8fe33}.dropzone.busy{cursor:progress}.dz-icon{font-size:48px;transition:transform .3s ease}.dropzone:hover .dz-icon{transform:scale(1.1)}.dz-title{font-size:20px;font-weight:800;margin-top:14px;letter-spacing:-.02em}.dz-sub{color:var(--muted);font-size:14px;margin-top:8px;font-weight:500}.dz-error{color:var(--danger);margin-top:12px;font-size:13px;font-weight:600}.status{display:flex;align-items:center;justify-content:center;gap:16px;font-size:15px}.status-body{display:flex;flex-direction:column;align-items:flex-start;gap:10px;min-width:240px;max-width:360px}.status-text{font-weight:700;letter-spacing:-.01em}.status-sub{color:var(--muted);font-size:13px;font-weight:500}.progress{width:100%;height:6px;background:#24304a80;border-radius:999px;overflow:hidden}.progress-fill{height:100%;width:30%;border-radius:999px;background:var(--accent-gradient);box-shadow:0 0 8px #6ea8fe99;transition:width .4s ease}.progress.indeterminate .progress-fill{width:40%;animation:indet 1.1s ease-in-out infinite}@keyframes indet{0%{margin-left:-40%}to{margin-left:100%}}.spinner{width:24px;height:24px;border:3px solid rgba(36,48,74,.5);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;box-shadow:inset 0 0 #6ea8fe33}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.result{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:28px;background:linear-gradient(135deg,#161d3180,#12182966);border:1px solid rgba(38,49,73,.5);border-radius:24px;padding:28px;text-align:left;box-shadow:0 8px 32px #0000004d,inset 0 1px #6ea8fe1a;animation:fadeInUp .6s ease-out}@media (max-width: 640px){.result{grid-template-columns:1fr;gap:20px}}.preview{width:100%;max-height:340px;object-fit:contain;border-radius:16px;background:#000;border:1px solid rgba(38,49,73,.3);box-shadow:0 4px 16px #0006}.result-body{display:flex;flex-direction:column;align-items:center;animation:fadeInUp .6s ease-out .15s backwards}.gauge{position:relative;width:100%;max-width:260px;margin:0 auto}.gauge-value{position:absolute;top:52%;left:0;right:0;text-align:center;font-size:48px;font-weight:800;letter-spacing:-.03em;transition:color .9s ease}.gauge-pct{font-size:22px;margin-left:2px}.gauge-label{text-align:center;color:var(--muted);font-size:13px;margin-top:4px;font-weight:500}.verdict{font-size:20px;font-weight:800;margin:16px 0 8px;text-align:center;letter-spacing:-.02em;transition:color .3s ease}.verdict-likely-ai{color:#ff6b6b}.verdict-likely-real{color:#3ddc84}.verdict-uncertain{color:#ffd166}.framebars{display:flex;align-items:flex-end;gap:5px;height:64px;margin:16px 0 0;width:100%;padding-top:12px;border-top:1px solid rgba(38,49,73,.2)}.framebar{flex:1;height:100%;display:flex;align-items:flex-end;background:#24304a66;border-radius:4px;overflow:hidden;transition:background .2s ease}.framebar:hover{background:#24304a99}.framebar-fill{width:100%;border-radius:4px;transition:height .5s ease;box-shadow:inset 0 0 #6ea8fe33}.meta{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:10px 12px;margin:20px 0 0;font-size:12px;padding-top:16px;border-top:1px solid rgba(38,49,73,.3)}.meta div{background:#161d3166;border:1px solid rgba(38,49,73,.3);border-radius:12px;padding:10px 12px;transition:all .2s ease}.meta div:hover{border-color:#6ea8fe4d;background:#6ea8fe0a}.meta dt{color:var(--muted);margin:0 0 4px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.4px}.meta dd{margin:0;font-weight:700;word-break:break-all}.actions{display:flex;gap:10px;width:100%;margin-top:20px}.btn{flex:1;padding:12px 16px;border-radius:14px;border:1px solid rgba(38,49,73,.5);background:#161d3199;color:var(--text);font-weight:700;font-size:14px;cursor:pointer;transition:all .2s ease}.btn:hover{border-color:#6ea8fe80;background:#6ea8fe14;transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn.primary{background:var(--accent-gradient);border-color:transparent;color:#06122b;box-shadow:0 4px 12px #6ea8fe66}.btn.primary:hover{box-shadow:0 6px 16px #6ea8fe99;transform:translateY(-3px)}.disclaimer{color:var(--muted);font-size:13px;max-width:36em;margin:32px auto 0;line-height:1.65;font-weight:500}.footer{text-align:center;color:var(--muted);font-size:12px;padding:22px 0 28px}.subscores{display:flex;gap:12px;width:100%;margin:12px 0 20px}.subscore{flex:1;background:#161d3180;border:1px solid rgba(38,49,73,.4);border-radius:14px;padding:12px 14px;display:flex;flex-direction:column;gap:6px;transition:all .2s ease}.subscore:hover{border-color:#6ea8fe66;background:#6ea8fe0d}.subscore span{color:var(--muted);font-size:12px;font-weight:600}.subscore b{font-size:22px;font-weight:800;letter-spacing:-.02em}.bymodel{width:100%;margin-bottom:12px}.bymodel-title{color:var(--muted);font-size:12px;margin-bottom:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}.bymodel-row{display:grid;grid-template-columns:1fr 90px 48px;align-items:center;gap:10px;margin-bottom:8px;font-size:12px;padding:8px 0;border-bottom:1px solid rgba(38,49,73,.2)}.bymodel-row:last-child{border-bottom:none}.bm-name{font-weight:600}.bm-name em{color:var(--muted);font-style:normal;font-size:11px;margin-left:4px;font-weight:400}.bm-bar{height:6px;background:#24304a80;border-radius:999px;overflow:hidden}.bm-fill{display:block;height:100%;border-radius:999px;transition:width .6s ease;box-shadow:inset 0 0 #6ea8fe33}.bm-val{text-align:right;font-weight:700}.feedback{display:flex;align-items:center;gap:10px;width:100%;margin:16px 0;color:var(--muted);font-size:13px;padding:12px 0;border-top:1px solid rgba(38,49,73,.3);border-bottom:1px solid rgba(38,49,73,.3);flex-wrap:wrap}.btn.mini{padding:6px 12px;font-size:12px;border-radius:10px;flex:none}.contribute{width:100%;margin:16px 0;padding:12px 14px;border-radius:12px;background:#24304a66;border:1px solid rgba(38,49,73,.3);font-size:13px}.contribute summary{cursor:pointer;color:var(--text);font-weight:700;transition:color .2s ease}.contribute summary:hover{color:var(--accent)}.contrib-body{margin:10px 0;color:var(--muted);font-size:12px;line-height:1.6}.contrib-consent{display:flex;gap:8px;align-items:flex-start;margin-bottom:10px;font-size:12px;line-height:1.5;cursor:pointer}.contrib-consent input{margin-top:3px;cursor:pointer}.contrib-error{margin-top:8px;color:#ff6b6b;font-size:12px;font-weight:600}.contribute.contrib-done{color:var(--ok);background:#3ddc8414;border-color:#3ddc844d}.disagreement{margin-top:12px;padding:10px 12px;border-radius:12px;background:#ffc1071a;border:1px solid rgba(255,193,7,.3);color:#ffd666e6;font-size:12px;line-height:1.6;font-weight:500}.provenance{width:100%;margin:14px 0;padding:12px 14px;border-radius:12px;background:#24304a66;border:1px solid rgba(38,49,73,.3);font-size:13px}.provenance.prov-ai-declared{background:#ff4d4d1a;border-color:#ff4d4d66}.provenance.prov-credentials-present{background:#3ddc8414;border-color:#3ddc844d}.prov-title{color:var(--muted);font-size:11px;margin-bottom:6px;font-weight:700;text-transform:uppercase;letter-spacing:.4px}.prov-line{font-weight:700;margin:4px 0}.prov-line.prov-alert{color:#ff6b6b}.prov-line.prov-muted{color:var(--muted);font-weight:600}.prov-note{margin-top:6px;color:var(--muted);font-size:12px;line-height:1.6}.result-media{animation:fadeInUp .6s ease-out .1s backwards}.result-media .framebars{margin-top:12px}.section{padding:48px 0;border-top:1px solid rgba(38,49,73,.3)}.section h2{font-size:28px;font-weight:800;letter-spacing:-.03em;margin:0 0 24px}.section-lead{color:var(--muted);line-height:1.75;margin:0 0 24px;font-size:16px;font-weight:500}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}@media (max-width: 640px){.steps{grid-template-columns:1fr}}.step{background:linear-gradient(135deg,#161d3166,#1218294d);border:1px solid rgba(38,49,73,.4);border-radius:18px;padding:24px;transition:all .3s ease}.step:hover{border-color:#6ea8fe4d;background:linear-gradient(135deg,#161d3180,#12182966);transform:translateY(-4px);box-shadow:0 8px 24px #0003}.step-icon{font-size:36px;display:block;margin-bottom:4px}.step h3{font-size:17px;font-weight:800;margin:12px 0 8px;letter-spacing:-.02em}.step p{color:var(--muted);font-size:14px;line-height:1.65;margin:0;font-weight:500}.ticks{list-style:none;padding:0;margin:0 0 24px;display:grid;gap:12px}.ticks li{position:relative;padding-left:32px;color:var(--text);font-size:15px;line-height:1.65;font-weight:500}.ticks li:before{content:"✓";position:absolute;left:0;top:0;color:var(--ok);font-weight:800;font-size:18px}.callout{background:#ffd1661a;border:1px solid rgba(255,209,102,.3);color:#ffe6a3f2;border-radius:14px;padding:14px 16px;font-size:14px;line-height:1.7;margin:0;font-weight:500}.faq{display:grid;gap:12px}.faq-item{background:linear-gradient(135deg,#161d3166,#1218294d);border:1px solid rgba(38,49,73,.4);border-radius:14px;overflow:hidden;transition:all .2s ease}.faq-item:hover{border-color:#6ea8fe4d}.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;background:transparent;border:none;color:var(--text);padding:16px;font-size:15px;font-weight:700;cursor:pointer;text-align:left;transition:color .2s ease}.faq-item:hover .faq-q{color:var(--accent)}.faq-caret{color:var(--accent);font-size:20px;flex-shrink:0;transition:transform .3s ease}.faq-item.open .faq-caret{transform:rotate(180deg)}.faq-a{color:var(--muted);font-size:14px;line-height:1.75;margin:0;padding:0 16px 16px;font-weight:500}.ad{width:100%;margin:20px 0}.ad-placeholder{display:flex;align-items:center;justify-content:center;min-height:90px;border:1px dashed rgba(38,49,73,.4);border-radius:14px;color:#93a1bf80;font-size:12px;font-weight:500;background:repeating-linear-gradient(45deg,transparent,transparent 12px,rgba(110,168,254,.02) 12px,rgba(110,168,254,.02) 24px)}.ad-rectangle.ad-placeholder{min-height:250px}.ad-leaderboard.ad-placeholder{min-height:90px}.footer{text-align:center;color:var(--muted);font-size:12px;padding:32px 0 40px;margin-top:24px;border-top:1px solid rgba(38,49,73,.3);font-weight:500}.footer-nav{display:flex;justify-content:center;gap:20px;margin-bottom:12px}.footer-nav a{color:var(--muted);text-decoration:none;font-size:13px;transition:color .2s ease}.footer-nav a:hover{color:var(--accent)}.footer-copy{opacity:.6;margin-top:8px}.result.shared-result{grid-template-columns:1fr;max-width:480px;margin:0 auto;text-align:center}.shared-badge{align-self:center;font-size:12px;font-weight:700;color:var(--accent);background:#6ea8fe14;border:1px solid rgba(110,168,254,.3);border-radius:999px;padding:8px 16px;margin-bottom:12px}.shared-note{color:var(--muted);font-size:14px;line-height:1.65;margin:14px 0 20px;font-weight:500}.bm-why{margin-top:6px;color:var(--muted);font-size:11.5px;line-height:1.5}.bm-why em{font-style:normal;font-weight:700;color:var(--accent);margin-right:6px}.benchnote{margin:14px 0 6px;padding:12px 14px;border-radius:12px;background:linear-gradient(135deg,#6ea8fe1a,#00d9ff0f);border:1px solid rgba(110,168,254,.25);color:var(--text);font-size:13.5px;font-weight:600;line-height:1.6}.footer-credit{margin-top:6px;color:var(--muted);font-size:12px;opacity:.85}.footer-credit a{color:var(--accent);text-decoration:none;font-weight:600}.footer-credit a:hover{text-decoration:underline}