:root{--ink:#17152b;--muted:#706d83;--line:#e7e4ef;--bg:#f7f7fb;--card:#fff;--purple:#6d3df5;--purple2:#8c5cff;--purple-soft:#f0ebff;--blue:#2481ff;--green:#169b67;--red:#dc3c4d;--shadow:0 20px 60px rgba(31,24,71,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Manrope,Arial,sans-serif}button,input{font:inherit}button,a{transition:.18s ease}a{color:inherit;text-decoration:none}.topbar{position:sticky;z-index:20;top:0;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;height:72px;padding:0 4vw;border-bottom:1px solid rgba(231,228,239,.8);background:rgba(255,255,255,.86);backdrop-filter:blur(18px)}.brand{display:flex;align-items:center;gap:10px;width:max-content;font-weight:800;letter-spacing:-.3px}.brand-symbol{display:grid;width:34px;height:34px;place-items:center;border-radius:11px;background:linear-gradient(140deg,var(--purple2),var(--purple));color:#fff;font-weight:800;box-shadow:0 8px 18px rgba(109,61,245,.25)}.topbar-center{display:flex;align-items:center;gap:9px;color:#59556e;font-size:12px;font-weight:700}.nav-dot{width:7px;height:7px;border-radius:50%;background:var(--purple);box-shadow:0 0 0 5px var(--purple-soft)}.user-menu{display:flex;justify-self:end;align-items:center;gap:9px;color:#5f5b70;font-size:12px;font-weight:600}.user-avatar{display:grid;width:30px;height:30px;place-items:center;border-radius:10px;background:#f0edfa;color:var(--purple);font-weight:800}.user-menu form{margin-left:6px}.user-menu button{padding:7px 11px;border:1px solid var(--line);border-radius:9px;background:#fff;color:#5f5b70;cursor:pointer}.user-menu button:hover{border-color:#cac4dc;color:var(--ink)}.page-shell{width:min(1180px,calc(100% - 36px));margin:0 auto;padding:64px 0 80px}.messages{margin-bottom:18px}.toast{padding:13px 16px;border:1px solid #ccebdd;border-radius:12px;background:#effbf5;color:#13704c;font-size:13px;font-weight:650}.toast.error{border-color:#ffd0d5;background:#fff3f4;color:#a51f30}.hero-section{display:grid;grid-template-columns:1fr auto;align-items:end;gap:32px;margin-bottom:34px}.overline{display:block;font:500 10px DM 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#e6e0fa;border-radius:18px;background:linear-gradient(120deg,#fbfaff,#f3efff)}.status-strip>div{display:flex;align-items:center;gap:13px}.status-strip>div>span{display:grid;width:38px;height:38px;place-items:center;border-radius:12px;background:#fff;color:var(--purple);font:500 11px DM Mono,monospace;box-shadow:0 6px 18px rgba(109,61,245,.1)}.status-strip p{display:grid;gap:3px;margin:0;font-size:12px}.status-strip small{color:var(--muted);font-size:10px;font-weight:500}.status-strip>i{width:36px;height:1px;background:#d9d0f6}.token-callout{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:22px;padding:18px 20px;border:1px solid #ead48d;border-radius:16px;background:#fffaf0}.token-callout>div{display:flex;align-items:center;gap:13px}.callout-icon{display:grid;width:38px;height:38px;place-items:center;border-radius:12px;background:#fff1c3;color:#9d6a00;font-size:20px}.token-callout b{font-size:13px}.token-callout p{margin:3px 0 0;color:#826f42;font-size:11px}.token-callout form{display:flex;gap:8px}.token-callout input{width:260px;padding:10px 12px;border:1px solid #e5d5aa;border-radius:10px;background:#fff;outline:none}.token-callout button{border:0;border-radius:10px;background:#9b7118;color:#fff;padding:10px 14px;font-weight:700;cursor:pointer}.solver-card,.result-section,.api-section{padding:28px;border:1px solid var(--line);border-radius:22px;background:var(--card);box-shadow:var(--shadow)}.section-title{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:21px}.section-title h2{margin:7px 0 0;font-size:23px;letter-spacing:-.8px}.secure-badge,.api-state{padding:7px 10px;border:1px solid #e5e1ef;border-radius:999px;background:#faf9fc;color:#757184;font:500 9px DM Mono,monospace}.api-state.ready{border-color:#ccebdd;background:#effbf5;color:#13704c}.form-alert{margin-bottom:17px;padding:12px 14px;border:1px solid #ffd0d5;border-radius:11px;background:#fff3f4;color:#a51f30;font-size:12px}.upload-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.drop-zone{position:relative;display:grid;min-height:310px;place-items:center;overflow:hidden;border:1.5px dashed #cfc9dd;border-radius:18px;background:linear-gradient(145deg,#fcfbff,#f7f5fc);cursor:pointer;transition:.2s}.drop-zone:hover{border-color:#9373ee;background:#f8f5ff;transform:translateY(-2px)}.drop-zone input{position:absolute;width:1px;height:1px;opacity:0}.image-letter{position:absolute;z-index:4;top:15px;left:15px;display:grid;width:34px;height:34px;place-items:center;border-radius:11px;background:var(--purple);color:#fff;font-size:13px;font-weight:800;box-shadow:0 8px 20px rgba(109,61,245,.24)}.image-letter.blue{background:var(--blue);box-shadow:0 8px 20px rgba(36,129,255,.24)}.upload-copy{position:relative;z-index:3;display:grid;place-items:center;text-align:center}.upload-copy:before{content:'+';display:grid;width:50px;height:50px;margin-bottom:16px;place-items:center;border:1px solid #ddd6ed;border-radius:15px;background:#fff;color:var(--purple);font-size:24px;box-shadow:0 8px 24px rgba(31,24,71,.06)}.upload-copy b{font-size:14px}.upload-copy small{margin-top:6px;color:var(--muted);font-size:11px}.upload-copy em{margin-top:16px;padding:8px 12px;border-radius:9px;background:var(--purple-soft);color:var(--purple);font-size:10px;font-style:normal;font-weight:800}.upload-preview{position:absolute;z-index:2;display:none;max-width:calc(100% - 34px);max-height:calc(100% - 34px);object-fit:contain;border-radius:10px}.upload-preview.visible{display:block}.drop-zone.has-image .upload-copy{opacity:0}.drop-zone.has-image{border-style:solid;background:#f5f4f8}.solver-actions{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:20px}.solver-actions>span{color:var(--muted);font:10px DM Mono,monospace}.solve-button,.primary-button{display:flex;align-items:center;gap:10px;padding:13px 20px;border:0;border-radius:12px;background:linear-gradient(135deg,var(--purple2),var(--purple));color:#fff;font-size:12px;font-weight:800;cursor:pointer;box-shadow:0 10px 24px rgba(109,61,245,.24)}.solve-button:hover,.primary-button:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(109,61,245,.32)}.solve-button:disabled{opacity:.48;cursor:not-allowed;transform:none}.solve-button>b{margin-left:6px}.button-icon{font-size:15px}.spinner{width:15px;height:15px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.result-section{margin-top:24px}.success-result{border-color:#d7eee4}.error-result{border-color:#f3cdd2}.result-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:22px}.result-state{font:500 9px DM Mono,monospace;letter-spacing:1.2px;color:var(--green)}.error-result .result-state{color:var(--red)}.result-heading h2{margin:7px 0 0;font-size:25px;letter-spacing:-.8px}.result-meta{display:flex;gap:7px}.result-meta span{padding:6px 9px;border-radius:8px;background:#f5f3f8;color:var(--muted);font:9px DM Mono,monospace}.result-visual-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:16px}.result-visual-grid article{overflow:hidden;border:1px solid var(--line);border-radius:16px}.visual-label{display:flex;align-items:center;gap:9px;padding:11px 13px;border-bottom:1px solid var(--line);color:var(--muted);font-size:10px}.visual-label b{display:grid;width:26px;height:26px;place-items:center;border-radius:8px;background:var(--purple-soft);color:var(--purple)}.visual-label b.blue{background:#e9f3ff;color:var(--blue)}.visual-canvas{display:grid;min-height:250px;padding:20px;place-items:center;background:#f7f7fa}.visual-canvas img{display:block;max-width:100%;max-height:310px}.target-canvas{position:relative;min-height:0;padding:0}.target-canvas img{width:100%;max-height:none}.point-marker{position:absolute;width:40px;height:40px;transform:translate(-50%,-50%);border:3px solid var(--purple);border-radius:50%;background:rgba(109,61,245,.16);box-shadow:0 0 0 4px rgba(255,255,255,.9),0 8px 20px rgba(109,61,245,.35)}.point-marker i{position:absolute;top:-10px;right:-8px;display:grid;width:20px;height:20px;place-items:center;border-radius:50%;background:var(--purple);color:#fff;font-size:9px;font-style:normal;font-weight:800}.result-data-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:16px;margin-top:16px}.point-cards{display:grid;gap:9px}.point-cards>div{display:flex;align-items:center;gap:11px;padding:13px;border:1px solid var(--line);border-radius:13px}.point-cards>div>span{display:grid;width:30px;height:30px;place-items:center;border-radius:9px;background:var(--purple-soft);color:var(--purple);font-weight:800}.point-cards p{display:grid;flex:1;gap:2px;margin:0}.point-cards b{font-size:12px}.point-cards small{color:var(--muted);font:9px DM Mono,monospace}.point-cards code{color:var(--purple);font:500 10px DM Mono,monospace}.code-card{overflow:hidden;border:1px solid #29263a;border-radius:14px;background:#1c1a29;color:#e7e3f4}.code-card>div{display:flex;align-items:center;justify-content:space-between;padding:10px 13px;border-bottom:1px solid #332f47}.code-card>div span{color:#a89ec8;font:500 8px DM Mono,monospace;letter-spacing:1px}.code-card button{border:0;background:none;color:#b8afe0;font-size:9px;cursor:pointer}.code-card pre{overflow:auto;margin:0;padding:15px;color:#d8d2ed;font:10px/1.65 DM Mono,monospace;white-space:pre-wrap}.error-summary{display:flex;align-items:flex-start;gap:13px;padding:16px;border:1px solid #f3cdd2;border-radius:14px;background:#fff6f7}.error-summary>span{display:grid;width:34px;height:34px;place-items:center;border-radius:10px;background:#ffe4e7;color:var(--red);font-weight:800}.error-summary b{color:var(--red);font:500 10px DM Mono,monospace}.error-summary p{margin:5px 0 0;color:#6f5055;font-size:12px}.debug-panel{margin-top:15px;border:1px solid var(--line);border-radius:14px;background:#faf9fc}.debug-panel summary{padding:13px 15px;cursor:pointer;font-size:11px;font-weight:800}.debug-panel>div{border-top:1px solid var(--line);padding:13px 15px}.debug-panel>div>span{color:var(--purple);font:500 8px DM Mono,monospace;letter-spacing:1px}.debug-panel pre{overflow:auto;max-height:300px;margin:9px 0 0;color:#4d485e;font:9px/1.65 DM Mono,monospace;white-space:pre-wrap;word-break:break-word}.api-section{margin-top:24px}.endpoint-row{display:grid;grid-template-columns:auto auto 1fr;align-items:center;gap:12px;margin-bottom:16px;padding:13px 15px;border:1px solid var(--line);border-radius:13px}.endpoint-row>span{padding:5px 8px;border-radius:7px;background:#e8f8f1;color:var(--green);font:500 9px DM Mono,monospace}.endpoint-row code{font:500 11px DM Mono,monospace}.endpoint-row p{justify-self:end;margin:0;color:var(--muted);font-size:10px}.api-doc-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.login-page{min-height:100vh;background:#fff}.login-shell{display:grid;grid-template-columns:1.1fr .9fr;min-height:100vh}.login-visual{position:relative;display:flex;overflow:hidden;flex-direction:column;padding:45px 5vw;background:radial-gradient(circle at 75% 20%,rgba(141,91,255,.35),transparent 30%),linear-gradient(145deg,#17122a,#24154d 60%,#42269a);color:#fff}.brand.light{color:#fff}.login-copy{position:relative;z-index:2;margin:auto 0}.login-copy .overline{color:#baabed}.login-copy h1{margin:18px 0;font-size:clamp(46px,6vw,82px);line-height:.98;letter-spacing:-4px}.login-copy p{max-width:550px;color:#c6bee0;font-size:14px;line-height:1.7}.visual-grid{position:absolute;right:-100px;bottom:-180px;display:grid;grid-template-columns:repeat(3,180px);gap:18px;transform:rotate(-12deg);opacity:.15}.visual-grid i{height:180px;border:1px solid #fff;border-radius:30px}.login-panel{display:grid;padding:30px;place-items:center}.login-card{width:min(390px,100%)}.login-card h2{margin:12px 0 6px;font-size:34px;letter-spacing:-1.5px}.login-card>p{margin:0 0 26px;color:var(--muted);font-size:12px}.login-card label{display:grid;gap:7px;margin-top:15px;color:#4d485c;font-size:11px;font-weight:800}.login-card input{width:100%;padding:13px 14px;border:1px solid #ddd9e6;border-radius:11px;outline:none}.login-card input:focus{border-color:#9272ee;box-shadow:0 0 0 3px rgba(109,61,245,.1)}.login-card .primary-button{justify-content:space-between;width:100%;margin-top:22px;padding:14px 16px}.mobile-brand{display:none}.login-card .form-alert{margin-top:18px}
@media(max-width:800px){.topbar{grid-template-columns:1fr auto}.topbar-center{display:none}.page-shell{padding-top:38px}.hero-section{grid-template-columns:1fr}.hero-section h1{letter-spacing:-2px}.service-status{width:100%}.status-strip{grid-template-columns:1fr;gap:12px}.status-strip>i{display:none}.token-callout{align-items:stretch;flex-direction:column}.token-callout form{display:grid;grid-template-columns:1fr auto}.token-callout input{width:100%}.upload-grid,.result-visual-grid,.result-data-grid,.api-doc-grid{grid-template-columns:1fr}.drop-zone{min-height:250px}.login-shell{grid-template-columns:1fr}.login-visual{display:none}.mobile-brand{display:flex;align-items:center;gap:9px;margin-bottom:50px;font-weight:800}.login-panel{padding:24px}.endpoint-row{grid-template-columns:auto 1fr}.endpoint-row p{grid-column:1/-1;justify-self:start}.solver-actions{align-items:stretch;flex-direction:column}.solve-button{justify-content:center}.result-heading{align-items:flex-start;flex-direction:column}.result-meta{flex-wrap:wrap}}
@media(max-width:520px){.topbar{height:62px;padding:0 14px}.brand>span:last-child{display:none}.user-menu>span:not(.user-avatar){display:none}.page-shell{width:min(100% - 22px,1180px)}.hero-section h1{font-size:39px}.solver-card,.result-section,.api-section{padding:18px;border-radius:18px}.section-title{align-items:flex-start;flex-direction:column}.drop-zone{min-height:220px}.token-callout form{grid-template-columns:1fr}.result-meta{font-size:8px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.new-api-key{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:14px;padding:15px 16px;border:1px solid #c8eadb;border-radius:14px;background:#effbf5}.new-api-key>div{display:grid;gap:7px;min-width:0}.new-api-key span{color:var(--green);font:500 8px DM Mono,monospace;letter-spacing:1px}.new-api-key code{overflow:auto;color:#115b40;font:500 11px DM Mono,monospace;white-space:nowrap}.new-api-key button,.secondary-button{padding:9px 12px;border:1px solid #dcd7e7;border-radius:9px;background:#fff;color:#514b64;font-size:10px;font-weight:800;cursor:pointer}.api-key-control{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:14px;padding:14px 15px;border:1px solid var(--line);border-radius:13px;background:#fbfafc}.api-key-control b{font-size:11px}.api-key-control p{margin:4px 0 0;color:var(--muted);font:9px DM Mono,monospace}.api-key-control>div:last-child{display:flex;gap:7px}.api-key-control form{margin:0}.secondary-button.danger{color:var(--red)}
@media(max-width:600px){.new-api-key,.api-key-control{align-items:stretch;flex-direction:column}.api-key-control>div:last-child{justify-content:flex-end}}

.switch-link{padding:7px 11px;border:1px solid var(--line);border-radius:9px;background:#fff;color:#5f5b70;font-size:11px;font-weight:700}.switch-link:hover{border-color:#cac4dc;color:var(--purple)}
.switch-link.sonnet-switch{border-color:#efd395;background:#fffaf0;color:#8a5715}.switch-link.sonnet-switch:hover{border-color:#d69e2e;background:#fff5d6;color:#6f420d}
.switch-link.sonnet46-switch{border-color:#b9d5f5;background:#f4f9ff;color:#245b91}.switch-link.sonnet46-switch:hover{border-color:#5794d0;background:#eaf4ff;color:#174a7c}
.model-nav{position:sticky;top:70px;z-index:19;display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 24px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);box-shadow:0 7px 22px rgba(23,21,43,.05);backdrop-filter:blur(14px)}
.model-nav-label{margin-right:4px;color:#9994a8;font:800 9px/1 Manrope,sans-serif;letter-spacing:.18em}
.model-nav-item{display:flex;align-items:center;gap:7px;padding:8px 11px;border:1px solid var(--line);border-radius:10px;background:#fff;color:#5f5b70;transition:.18s ease}
.model-nav-item b{font:750 11px/1 Manrope,sans-serif;white-space:nowrap}.model-nav-item small{font:600 9px/1 Manrope,sans-serif;color:#9691a3;white-space:nowrap}
.model-nav-item:hover{transform:translateY(-1px);border-color:#c9c4d7;box-shadow:0 5px 14px rgba(23,21,43,.08)}
.model-nav-item.active{color:#fff;border-color:transparent;box-shadow:0 7px 18px rgba(23,21,43,.16)}.model-nav-item.active small{color:rgba(255,255,255,.78)}
.model-nav-item.opus.active{background:linear-gradient(135deg,#7651d6,#5937b5)}
.model-nav-item.sonnet5.active{background:linear-gradient(135deg,#d69e2e,#975a16)}
.model-nav-item.sonnet46.active{background:linear-gradient(135deg,#4e91d4,#245b91)}
.model-nav-item.haiku45.active{background:linear-gradient(135deg,#2f9e74,#187052)}
.model-nav-item.local.active{background:linear-gradient(135deg,#158a67,#09634c)}
@media(max-width:900px){.model-nav{justify-content:flex-start;overflow-x:auto;padding:9px 14px;top:60px}.model-nav-label{display:none}.model-nav-item{flex:0 0 auto}.model-nav-item small{display:none}}