:root{--bg:#f7f7fa;--surface:#fff;--surface-2:#f0eef7;--surface-3:#e4e0f0;--border:rgba(22,18,31,.1);--border-strong:rgba(22,18,31,.22);--text:#16121f;--text-muted:rgba(22,18,31,.62);--text-faint:rgba(22,18,31,.4);--primary:#5b4fe9;--success:#1c8c6e;--danger:#c23b3b;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--radius:var(--radius-md);--fs-display:32px;--lh-display:1.15;--tr-display:-0.02em;--fs-title:23px;--lh-title:1.25;--tr-title:-0.015em;--fs-subtitle:15px;--lh-subtitle:1.4;--tr-subtitle:0;--fs-body:14px;--lh-body:1.5;--tr-body:0;--fs-label:13px;--lh-label:1.3;--tr-label:0;--fs-caption:12px;--lh-caption:1.4;--tr-caption:0;--fs-micro:11px;--lh-micro:1.3;--tr-micro:0.2px;--font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--text);font-family:var(--font);font-size:var(--fs-body);line-height:var(--lh-body);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}a{color:inherit}button{cursor:pointer}button,input,textarea{font-family:var(--font)}.app-container{max-width:1080px;margin:0 auto;padding:24px 20px 80px}.app-topbar{justify-content:space-between;flex-wrap:wrap;gap:16px;padding:16px 20px;border-bottom:1px solid var(--border)}.app-brand,.app-topbar{display:flex;align-items:center}.app-brand{gap:8px;font-weight:700;font-size:18px;letter-spacing:-.2px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;border:1px solid transparent;transition:filter .15s ease,background .15s ease,border-color .15s ease;text-decoration:none;white-space:nowrap}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{filter:brightness(1.1)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface-2);color:var(--text);border-color:var(--border)}.btn-secondary:hover{background:var(--surface-3)}.btn-ghost{background:transparent;color:var(--text-muted)}.btn-ghost:hover{color:var(--text)}.card-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;box-shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.28)}.page-heading,h1,h2,h3{font-weight:700;letter-spacing:var(--tr-title);line-height:var(--lh-title)}.page-heading{font-size:var(--fs-title);color:var(--text)}.page-subheading{font-size:var(--fs-subtitle);color:var(--text-muted);margin-top:3px}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:20px;overflow-x:auto}.tab{display:inline-flex;align-items:center;gap:6px;padding:10px 4px;margin-right:22px;font-size:14px;font-weight:600;color:var(--text-muted);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;white-space:nowrap;transition:color .15s ease,border-color .15s ease}.tab-active,.tab:hover{color:var(--text)}.tab-active{border-bottom-color:var(--primary)}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:18px;min-width:0}.field label{font-size:13px;font-weight:600;color:var(--text-muted);letter-spacing:0}.field input,.field textarea{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;color:var(--text);font-size:14px;width:100%}.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary)}.field-hint{font-size:12px;color:var(--text-faint);margin-top:2px}.field-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}@media (max-width:560px){.field-row{grid-template-columns:1fr}}.muted{color:var(--text-muted)}.section-title{font-size:var(--fs-label);font-weight:700;color:var(--primary);margin:24px 0 12px}.code-block{background:#000;border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;font-family:Courier New,monospace;font-size:12px;color:#d4d4d4;overflow-x:auto;white-space:pre-wrap;word-break:break-all}.color-swatch-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.color-swatch{width:30px;height:30px;border-radius:50%;border:2px solid transparent;cursor:pointer;padding:0;transition:transform .1s ease,border-color .1s ease}.color-swatch:hover{transform:scale(1.08)}.color-swatch-active{border-color:var(--text);box-shadow:0 0 0 2px var(--bg),0 0 0 3px var(--border-strong)}.color-swatch-custom{position:relative;width:30px;height:30px;border-radius:50%;overflow:hidden;flex-shrink:0;border:1px solid var(--border-strong);display:flex;align-items:center;justify-content:center;background:var(--surface-2);color:var(--text-muted)}.color-swatch-custom input[type=color]{position:absolute;inset:-4px;width:calc(100% + 8px);height:calc(100% + 8px);border:none;padding:0;cursor:pointer;opacity:0}.field-label-row{display:flex;align-items:center;justify-content:space-between;gap:8px}.field-status-valid{color:var(--success);display:inline-flex}.field-status-invalid{color:var(--primary);display:inline-flex}.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.spin-icon{animation:spin .8s linear infinite}.modal-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:0 24px 64px rgba(0,0,0,.5);padding:20px;width:100%;max-width:360px}