:root{--bg:#f7f8fb;--surface:#fff;--surface2:#f1f3f8;--text:#111827;--muted:#5d667a;--line:#dfe3eb;--ink:#0b1020;--violet:#5f4ad9;--violet2:#7f6df1;--teal:#0e8f83;--amber:#b76b17;--red:#c9424d;--green:#137a54;--shadow:0 22px 68px rgba(26,34,58,.12);--radius:24px;--sans:Inter,"Avenir Next","Segoe UI",system-ui,-apple-system,sans-serif;--serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 80% 0,rgba(95,74,217,.08),transparent 28rem),var(--bg);color:var(--text);font-family:var(--sans);line-height:1.55}button,input{font:inherit}button{cursor:pointer}a{color:inherit}.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:12px;z-index:100;background:#fff;padding:10px 14px;border-radius:10px;box-shadow:var(--shadow)}
.shell{width:min(1180px,calc(100% - 32px));margin:auto}.topbar{position:sticky;top:0;z-index:20;background:rgba(247,248,251,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(223,227,235,.86)}.topbar-inner{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:760;letter-spacing:-.02em}.brand-mark{width:36px;height:36px;border-radius:12px;background:linear-gradient(145deg,var(--ink),#2e3970);display:grid;place-items:center;color:white;box-shadow:0 8px 22px rgba(11,16,32,.2)}.brand-mark svg{width:21px}.nav{display:flex;align-items:center;gap:20px;font-size:.92rem;color:var(--muted)}.nav a{text-decoration:none}.nav a:hover{color:var(--text)}.ready{display:inline-flex;align-items:center;gap:7px;padding:7px 10px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.8rem;color:var(--muted)}.ready:before{content:"";width:7px;height:7px;border-radius:50%;background:#aaa}.ready[data-ready=true]:before{background:var(--green)}
.hero{padding:76px 0 38px}.eyebrow{font-size:.76rem;text-transform:uppercase;letter-spacing:.16em;font-weight:800;color:var(--violet)}h1,h2,h3{font-family:var(--serif);letter-spacing:-.035em;margin:0;color:#101522}.hero h1{font-size:clamp(3rem,8vw,6.7rem);line-height:.9;max-width:850px}.hero h1 span{color:var(--violet)}.hero-copy{font-size:clamp(1.05rem,2vw,1.32rem);color:var(--muted);max-width:740px;margin:26px 0 0}.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.pill{font-size:.82rem;padding:8px 11px;border:1px solid var(--line);background:rgba(255,255,255,.78);border-radius:999px;color:var(--muted)}
.workspace{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(330px,.96fr);gap:22px;align-items:stretch;margin:24px 0 72px}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 35px rgba(26,34,58,.06)}.upload-panel{padding:24px}.mode-label{font-size:.76rem;text-transform:uppercase;letter-spacing:.12em;font-weight:800;color:var(--muted);margin-bottom:9px}.mode-switch{display:flex;background:var(--surface2);padding:4px;border-radius:14px;width:max-content;max-width:100%}.mode-switch button{border:0;background:transparent;border-radius:11px;padding:9px 13px;color:var(--muted);font-weight:700;font-size:.88rem}.mode-switch button[aria-pressed=true]{background:#fff;color:var(--text);box-shadow:0 2px 8px rgba(30,36,54,.08)}.mode-note{margin:10px 0 18px;font-size:.84rem;color:var(--muted)}.dropzone{min-height:310px;border:1.5px dashed #cbd1de;border-radius:20px;display:flex;align-items:center;justify-content:center;text-align:center;padding:34px;background:linear-gradient(145deg,#fbfbfd,#f5f6fa);transition:.18s ease;outline:none}.dropzone:hover,.dropzone:focus,.dropzone.drag{border-color:var(--violet);background:#f7f5ff;transform:translateY(-1px)}.drop-icon{width:64px;height:64px;border-radius:20px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;margin:0 auto 17px;color:var(--violet);box-shadow:0 12px 28px rgba(63,55,120,.09)}.drop-icon svg{width:29px}.dropzone h2{font-size:1.55rem;font-family:var(--sans);letter-spacing:-.03em}.dropzone p{margin:7px auto 0;color:var(--muted);max-width:420px;font-size:.94rem}.dropzone small{display:block;margin-top:16px;color:#858da0}.btn{border:1px solid var(--ink);background:var(--ink);color:#fff;border-radius:12px;padding:10px 15px;font-weight:760;transition:.15s ease}.btn:hover{transform:translateY(-1px)}.btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}.btn-small{font-size:.83rem;padding:7px 10px;border-radius:9px}
.method-panel{padding:27px;display:flex;flex-direction:column}.method-panel h2{font-size:2rem;line-height:1.08}.method-lede{color:var(--muted);margin:12px 0 22px}.pipeline{display:grid;gap:9px}.pipe-row{display:grid;grid-template-columns:34px 1fr;gap:12px;align-items:start;padding:13px;border-radius:14px;background:var(--surface2)}.pipe-n{width:30px;height:30px;border-radius:10px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;font-size:.78rem;font-weight:800;color:var(--violet)}.pipe-row strong{display:block;font-size:.91rem}.pipe-row span{display:block;color:var(--muted);font-size:.82rem;margin-top:2px}.method-foot{margin-top:auto;padding-top:20px}.metric-mini{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.metric-mini div{border-top:1px solid var(--line);padding-top:12px}.metric-mini strong{font-size:1.45rem;display:block}.metric-mini span{font-size:.75rem;color:var(--muted)}
.progress{padding:24px;margin-bottom:28px}.progress h2{font-family:var(--sans);font-size:1.05rem;letter-spacing:-.02em}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:16px}.step{position:relative;padding:12px 10px;background:var(--surface2);border-radius:12px;font-size:.78rem;color:var(--muted)}.step:before{content:"";display:block;width:8px;height:8px;border-radius:50%;background:#bbc1cf;margin-bottom:8px}.step.done{color:var(--text);background:#f0f8f6}.step.done:before{background:var(--green)}
.results{scroll-margin-top:90px;margin-bottom:82px}.result-shell{padding:26px}.result-top{display:grid;grid-template-columns:190px 1fr;gap:24px}.preview{aspect-ratio:1;border-radius:18px;overflow:hidden;background:var(--surface2)}.preview img{width:100%;height:100%;object-fit:cover;display:block}.fileline{font-size:.78rem;color:var(--muted);margin-top:7px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.verdict-badge{display:inline-flex;border-radius:999px;padding:7px 10px;font-size:.78rem;font-weight:800;letter-spacing:.03em;background:#eef1f5;color:var(--muted)}.verdict-badge[data-kind=ai]{background:#fff0f1;color:#9e2832}.verdict-badge[data-kind=real]{background:#eaf8f1;color:#116746}.result-head h2{font-size:clamp(2.1rem,5vw,4rem);line-height:.96;margin:10px 0}.confidence{color:var(--muted)}.score-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:20px}.score-card{padding:16px;border:1px solid var(--line);border-radius:15px}.score-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}.score-card span{font-size:.8rem;color:var(--muted)}.score-card strong{font-size:1.15rem}.bar{height:7px;background:#edf0f5;border-radius:999px;overflow:hidden;margin-top:10px}.bar i{display:block;height:100%;width:0;border-radius:inherit;transition:width .45s ease}.bar.ai i{background:var(--red)}.bar.real i{background:var(--green)}.regime-box{margin-top:13px;font-size:.82rem;color:var(--muted)}.regime-box strong{color:var(--text)}.result-columns{display:grid;grid-template-columns:1.05fr .95fr;gap:20px;margin-top:24px}.subpanel{border-top:1px solid var(--line);padding-top:20px}.subpanel h3{font-family:var(--sans);font-size:1rem;letter-spacing:-.02em;margin-bottom:12px}.evidence-list,.limitations{padding-left:20px;margin:0;display:grid;gap:9px;color:#3c4659}.evidence-list li::marker{color:var(--violet)}.meta-table{width:100%;border-collapse:collapse;font-size:.83rem}.meta-table th,.meta-table td{padding:9px 0;border-bottom:1px solid #edf0f5;text-align:left;vertical-align:top}.meta-table th{width:36%;color:var(--muted);font-weight:600}.result-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:22px;border-top:1px solid var(--line);padding-top:18px}.result-actions p{margin:0;color:var(--muted);font-size:.78rem;max-width:660px}
.section{padding:62px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.section h2{font-size:clamp(2.4rem,5vw,4.4rem);line-height:.95;max-width:760px}.section-lede{color:var(--muted);max-width:650px;margin-top:15px}.metrics-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.metric{padding:20px;background:#fff;border:1px solid var(--line);border-radius:18px}.metric strong{font-size:2rem;display:block;letter-spacing:-.04em}.metric span{font-size:.8rem;color:var(--muted)}.benchmark-note{margin-top:14px;color:var(--muted);font-size:.84rem}.benchmark-note a{color:var(--violet)}
.practice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.sample-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}.sample-image-wrap{aspect-ratio:4/3;background:var(--surface2)}.sample-image-wrap img{width:100%;height:100%;object-fit:cover}.sample-body{padding:13px}.sample-kicker{font-size:.76rem;color:var(--muted);margin-bottom:10px}.sample-actions{display:flex;gap:7px}.sample-label{margin-top:10px;font-size:.82rem;padding:9px;background:var(--surface2);border-radius:9px}.research-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.research-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:20px}.research-card h3{font-size:1.5rem}.research-card p{color:var(--muted);margin-bottom:0}.callout{background:var(--ink);color:#fff;padding:34px;border-radius:26px;margin:45px 0 80px}.callout h2{color:#fff;font-size:clamp(2rem,5vw,3.7rem)}.callout p{color:#bac2d4;max-width:750px}.callout a{display:inline-block;margin-top:10px;color:#fff;font-weight:800}.footer{border-top:1px solid var(--line);padding:28px 0 50px;color:var(--muted);font-size:.82rem}.footer-inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}.toast{position:fixed;right:20px;bottom:20px;max-width:420px;background:var(--ink);color:#fff;padding:14px 16px;border-radius:14px;z-index:100;box-shadow:var(--shadow);font-size:.88rem}.toast[data-kind=warn]{background:#6d4315}
@media(max-width:900px){.nav{display:none}.workspace,.result-columns,.research-grid{grid-template-columns:1fr}.result-top{grid-template-columns:145px 1fr}.metrics-row{grid-template-columns:1fr 1fr}.practice-grid{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr}.hero{padding-top:54px}}@media(max-width:620px){.shell{width:min(100% - 22px,1180px)}.hero h1{font-size:3.25rem}.workspace{margin-top:8px}.upload-panel,.method-panel,.result-shell{padding:17px}.dropzone{min-height:260px;padding:24px 14px}.result-top{grid-template-columns:1fr}.preview{max-width:210px}.score-grid,.metrics-row,.practice-grid{grid-template-columns:1fr}.section{padding:44px 0}.topbar-inner{min-height:62px}.brand{font-size:.94rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
/* v0.2 — private GPU access, provenance and benchmark-practice refinements */
.lock-dot{font-size:.68rem;margin-left:5px;padding:2px 6px;border-radius:999px;background:#ece9ff;color:#5748a7}.gpu-status{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center;padding:11px 13px;border:1px solid var(--line);border-radius:13px;background:#fbfbfd;margin:0 0 18px;font-size:.8rem}.gpu-status strong,.gpu-status span{display:block}.gpu-status span{color:var(--muted);font-size:.74rem}.status-dot{width:9px!important;height:9px;border-radius:50%;background:#b6bdc9}.gpu-status[data-state=online] .status-dot{background:var(--green);box-shadow:0 0 0 4px rgba(26,138,98,.1)}.gpu-status[data-state=locked] .status-dot{background:#c28b24}.gpu-status[data-state=offline] .status-dot{background:#bd5360}.text-button{border:0;background:transparent;color:var(--violet);font-weight:800;padding:5px;cursor:pointer}.result-evidence-extra{margin-top:0}.evidence-summary{font-weight:780;font-size:.92rem;padding:11px 12px;border-radius:12px;background:var(--surface2)}.microcopy{font-size:.77rem;line-height:1.5;color:var(--muted);margin-top:8px}.practice-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:13px 14px;border:1px solid var(--line);border-radius:15px;background:#fff;margin-bottom:16px}.practice-toolbar label{font-size:.78rem;font-weight:760}.practice-toolbar select{padding:9px 30px 9px 10px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--text)}.gpu-practice-stage{margin-bottom:18px;border:1px solid var(--line);border-radius:20px;background:#fff;padding:16px}.gpu-practice-stage .sample-card{max-width:520px;margin:auto}.auth-dialog{border:0;border-radius:24px;padding:0;width:min(92vw,480px);box-shadow:0 28px 90px rgba(9,14,31,.32);background:#fff;color:var(--text)}.auth-dialog::backdrop{background:rgba(9,14,31,.54);backdrop-filter:blur(5px)}.auth-dialog form{padding:30px;position:relative}.auth-dialog h2{font-size:2rem;line-height:1.02;margin:9px 0 10px}.auth-dialog p{color:var(--muted);font-size:.9rem}.dialog-close{position:absolute;right:17px;top:14px;border:0;background:var(--surface2);width:34px;height:34px;border-radius:50%;font-size:1.3rem;cursor:pointer}.dialog-mark{margin-bottom:17px;font-size:.7rem;font-weight:900}.field{display:grid;gap:6px;margin-top:20px}.field span{font-size:.78rem;font-weight:800}.field input{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:11px;font:inherit;outline:none}.field input:focus{border-color:var(--violet);box-shadow:0 0 0 3px rgba(106,90,205,.12)}.form-error{color:#9e2832;background:#fff0f1;border-radius:9px;padding:9px 10px;font-size:.8rem;margin-top:10px}.auth-submit{width:100%;margin-top:14px}.tunnel-help{border-top:1px solid var(--line);margin-top:20px;padding-top:15px;font-size:.76rem;color:var(--muted)}.tunnel-help strong{display:block;margin-bottom:5px;color:var(--text)}.tunnel-help code{display:block;padding:9px;background:var(--surface2);border-radius:9px;overflow:auto}.gpu-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:9px}.gpu-metrics span{display:block;background:var(--surface2);padding:8px;border-radius:9px;font-size:.72rem}@media(max-width:620px){.gpu-status{grid-template-columns:auto 1fr}.gpu-status .text-button{grid-column:2;justify-self:start}.auth-dialog form{padding:23px}.gpu-metrics{grid-template-columns:1fr}}
.mode-dialog{width:min(94vw,720px)}.mode-dialog-body{padding:32px}.mode-dialog-lede{max-width:590px}.mode-choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}.mode-choice-card{appearance:none;text-align:left;border:1px solid var(--line);background:#fff;border-radius:18px;padding:20px;display:grid;gap:8px;color:var(--text);cursor:pointer;transition:.18s ease;min-height:180px}.mode-choice-card:hover,.mode-choice-card:focus-visible{border-color:var(--violet);transform:translateY(-2px);box-shadow:0 14px 35px rgba(44,38,94,.10);outline:none}.mode-choice-card.preferred{background:linear-gradient(145deg,#fbfaff,#f5f2ff);border-color:#d8d0ff}.mode-choice-card strong{font-size:1.05rem}.mode-choice-card span:not(.mode-choice-icon){font-size:.86rem;line-height:1.5;color:var(--muted)}.mode-choice-card small{font-size:.74rem;color:#6f7688;margin-top:auto}.mode-choice-icon{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:var(--surface2);color:var(--violet);font-weight:900}.mode-choice-status{margin-top:16px;padding:10px 12px;border-radius:11px;background:var(--surface2);color:var(--muted);font-size:.78rem}.tunnel-help span{display:block;line-height:1.45}@media(max-width:620px){.mode-choice-grid{grid-template-columns:1fr}.mode-dialog-body{padding:24px}.mode-choice-card{min-height:0}}

/* Cross-platform SSH connector dialog */
.ssh-grid{display:grid;grid-template-columns:minmax(0,1fr) 120px;gap:12px}.trust-row{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line,#dfe3ea);border-radius:12px;background:rgba(127,127,127,.05);margin:10px 0}.trust-row input{margin-top:3px}.trust-row span{display:grid;gap:3px}.trust-row small{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow-wrap:anywhere;opacity:.78}.connect-progress{margin:10px 0;padding:10px 12px;border-radius:10px;background:rgba(90,84,255,.08);font-size:.92rem}.field-port input{text-align:center}@media(max-width:560px){.ssh-grid{grid-template-columns:1fr}.field-port input{text-align:left}}

/* v0.2.1 — human-centered typography refresh */
:root{
  --sans:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --serif:var(--sans);
}
body{font-family:var(--sans);font-size:16px;line-height:1.62;letter-spacing:-.006em;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,.method-panel h2,.result-head h2,.section h2,.research-card h3,.callout h2,.auth-dialog h2{font-family:var(--sans);font-weight:760;letter-spacing:-.045em}
.hero h1{font-size:clamp(2.9rem,6.3vw,5.65rem);line-height:.97;max-width:900px;font-weight:790}
.hero-copy{font-size:clamp(1.04rem,1.65vw,1.24rem);line-height:1.62;max-width:760px}
.method-panel h2{font-size:clamp(1.7rem,2.8vw,2.15rem);line-height:1.12}
.pipe-row strong{font-size:.95rem;font-weight:740;letter-spacing:-.015em}.pipe-row span{font-size:.86rem;line-height:1.52}
.pipe-n{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;font-weight:820}
.result-head h2{font-size:clamp(2rem,4.25vw,3.55rem);line-height:1.01}
.section h2{font-size:clamp(2.05rem,4vw,3.55rem);line-height:1.02;max-width:820px}
.section-lede,.method-lede,.research-card p,.callout p{line-height:1.65}
.metric strong,.metric-mini strong,.score-card strong{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.auth-dialog h2{font-size:clamp(1.7rem,3vw,2.2rem);line-height:1.08}
@media(max-width:620px){.hero h1{font-size:clamp(2.55rem,14vw,3.45rem);line-height:.98}.section h2{font-size:clamp(1.9rem,10vw,2.65rem)}}