:root{--bg:#f3f4f6;--panel:#fff;--text:#111;--muted:#666;--meta:#999;--line:#e5e5e5;--accent:#111;--danger:red;--success:#10b981;--shadow:0 18px 46px #0f172a14;--radius-lg:20px;--radius-md:16px;--radius-sm:10px;--max-width:420px;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{min-height:100vh;color:var(--text);background:var(--bg);font-family:var(--font-sans);margin:0;font-size:14px;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}.shell{width:100%;max-width:none;min-height:100vh;box-shadow:none;padding-bottom:calc(28px + env(safe-area-inset-bottom));background:radial-gradient(circle at top,#f1f5f9eb,#fff0 220px),#fff;margin:0 auto}.topbar{z-index:100;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:calc(12px + env(safe-area-inset-top)) 16px 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var(--line);width:100%;color:var(--text);background:#fff;border-radius:12px;padding:12px 14px;font-size:15px;transition:border-color .2s}.input:focus,.textarea:focus,.select:focus{border-color:#999;outline:none}.textarea{resize:vertical;min-height:128px}.option-grid{grid-template-columns:1fr;gap:10px}.option-card{border:1px solid var(--line);color:#333;cursor:pointer;background:#fff;border-radius:14px;align-items:stretch;padding:12px;font-size:13px;display:flex}.option-card.active{background:#f5f5f5;border-color:#111}.radio-row,.checkbox-row{align-items:center;gap:8px;display:flex}.option-card-stack{gap:10px;width:100%;display:grid}.option-price-row{gap:4px;display:grid}.option-price-row strong{color:#111;font-size:17px}.option-card input[type=checkbox],.option-card input[type=radio]{flex-shrink:0;width:16px;height:16px}.option-card .hint{display:block}.radio-group{flex-wrap:wrap;gap:8px;display:flex}.radio-item{border:1px solid 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