:root{--bg: #f2f4f7;--panel: #ffffff;--ink: #16202e;--ink-soft: #5a6572;--line: #dde3ea;--accent: #0f4c81;--accent-dark: #0b3a63;--accent-soft: #e8f0f8;--ok: #1a7f4b;--err: #b3362b;--radius: 10px;--shadow: 0 1px 3px rgba(22, 32, 46, .08), 0 4px 14px rgba(22, 32, 46, .06)}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:Inter,Segoe UI,-apple-system,PingFang SC,Helvetica Neue,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}.app{min-height:100%;display:flex;flex-direction:column}.site-header{display:flex;align-items:center;justify-content:space-between;padding:8px 20px;background:#fff;color:var(--ink);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px}.brand-logo{height:44px;width:auto;display:block}.brand strong{font-size:15px;letter-spacing:.06em;display:block;line-height:1.2;color:var(--ink)}.brand-sub{font-size:12px;color:var(--ink-soft);display:block}.site-header nav a{color:var(--accent-dark);text-decoration:none;font-size:13px;margin-left:16px;font-weight:600}.site-header nav a:hover{color:var(--accent)}.site-nav{display:flex;align-items:center}.site-nav .lang-switch button{padding:4px 12px;font-size:12px;color:var(--ink-soft)}.site-nav .lang-switch button.active{background:var(--accent);color:#fff}.site-nav a{white-space:nowrap}.layout{flex:1;display:grid;grid-template-columns:400px 1fr;gap:14px;padding:14px 20px;max-width:1680px;width:100%;margin:0 auto}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);display:flex;flex-direction:column;max-height:calc(100vh - 120px);position:sticky;top:14px}.steps{list-style:none;margin:0;padding:10px;display:grid;grid-template-columns:repeat(4,1fr);gap:6px;border-bottom:1px solid 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560px){.layout{padding:10px;gap:10px}.size-grid{grid-template-columns:repeat(4,1fr)}.form-grid,.option-list{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr)}.slider-head .hint{display:none}}