:root{--navy-900: #0b131d;--navy-800: #0e1621;--navy-700: #131e2b;--navy-600: #1b2839;--navy-card: #16212f;--line: rgba(255, 255, 255, .08);--light-bg: #eef1ee;--light-card: #ffffff;--light-soft: #e7ece8;--ink: #16202b;--ink-soft: #5d6b76;--accent: #2ecc8f;--accent-deep: #1faf76;--radius: 18px;--radius-lg: 22px;font-synthesis:none;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--navy-900);color:#fff}.app{min-height:100vh;max-width:520px;margin:0 auto;background:linear-gradient(180deg,var(--navy-800),var(--navy-900))}.app-header{position:sticky;top:0;z-index:20;padding:18px 18px 14px;background:linear-gradient(180deg,#0b131df5,#0b131dd1);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px}.brand-mark{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;background:#fff;overflow:hidden}.brand-mark img{width:100%;height:100%;object-fit:contain;padding:5px}.brand-text h1{margin:0;font-size:21px;letter-spacing:-.02em}.brand-text p{margin:2px 0 0;font-size:13px;color:var(--ink-soft)}.app-main{padding:16px 14px 120px}.page{display:flex;flex-direction:column;gap:16px}.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:11px;font-weight:700;color:var(--ink-soft)}.eyebrow.light{color:#ffffff80}.muted{color:var(--ink-soft);font-size:14px}.muted-light{color:#ffffff80;font-size:13px;margin:4px 0 0}.error{color:#ff8585;font-size:14px;background:#ff50501a;padding:10px 12px;border-radius:12px}.breadcrumb{color:var(--ink-soft);text-decoration:none;font-size:14px}.breadcrumb.dark{color:#8a97a3}.panel{background:var(--navy-700);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px;display:flex;flex-direction:column;gap:14px}.panel-head{display:flex;align-items:center;justify-content:space-between}.project-list{display:flex;flex-direction:column;gap:12px}.project-card{display:block;background:var(--light-card);color:var(--ink);border-radius:var(--radius);padding:18px;text-decoration:none;box-shadow:0 8px 24px #00000040}.project-card h2{margin:0;font-size:21px;letter-spacing:-.02em}.project-card-sub{margin:4px 0 14px;color:var(--ink-soft);font-size:14px}.chips{display:flex;gap:8px;flex-wrap:wrap}.chip{font-size:13px;padding:6px 12px;border-radius:999px;background:#ffffff14;color:#ffffffd9}.chip.light{background:var(--light-soft);color:var(--ink-soft)}.project-card .chip{background:#eef1ee;color:var(--ink-soft)}.project-hero{background:#f7f8f6;color:var(--ink);border-radius:var(--radius);padding:20px}.project-hero h2{margin:0;font-size:24px;letter-spacing:-.02em}.project-hero p{margin:4px 0 14px;color:var(--ink-soft)}.surface-list{display:flex;flex-direction:column;gap:10px}.surface-card{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--navy-600);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;text-decoration:none;color:#fff}.surface-card:first-child{border-color:#46c2a899;box-shadow:inset 0 0 0 1px #46c2a840}.surface-card-main{display:flex;flex-direction:column;gap:4px}.surface-card-name{font-size:17px;font-weight:600}.surface-card-sub{font-size:13px;color:#ffffff8c}.surface-card-area{font-size:17px;font-weight:700;white-space:nowrap}.add-surface{border:1px dashed rgba(255,255,255,.25);background:transparent;color:#fff;border-radius:var(--radius);padding:16px;font-size:15px;font-weight:600;cursor:pointer}.add-surface:hover{background:#ffffff0a}.summary-panel{background:linear-gradient(180deg,var(--navy-700),var(--navy-800));border:1px solid var(--line);border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;gap:6px;color:#eef2f0}.summary-panel h3{margin:6px 0 0;font-size:22px;letter-spacing:-.02em}.total{font-size:44px;font-weight:800;letter-spacing:-.03em;margin-top:6px}.cost-table{margin-top:14px;background:#ffffff08;border-radius:16px;padding:4px 16px}.cost-row{display:flex;justify-content:space-between;align-items:center;padding:14px 0;font-size:16px}.cost-row+.cost-row{border-top:1px solid var(--line)}.material-mini{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;color:#fff9;font-size:13px}.material-mini span{background:#ffffff0f;padding:6px 12px;border-radius:999px}.plan-head{margin-top:18px}.plan{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:16px}.plan li{display:flex;gap:12px;align-items:flex-start}.plan-dot{width:11px;height:11px;border-radius:50%;margin-top:4px;background:#57a8e6;flex-shrink:0}.plan-label{display:block;font-size:16px;font-weight:600}.plan-meta{display:block;font-size:13px;color:#ffffff80}.light-page{background:var(--light-bg);color:var(--ink);margin:-16px -14px -120px;padding:16px 14px 140px;min-height:100vh}.light-page .breadcrumb.dark{color:#6b7780}.surface-title{margin:10px 0 2px;font-size:30px;letter-spacing:-.02em}.surface-subtitle{margin:0 0 14px;color:var(--ink-soft)}.calc-hero{background:var(--light-soft);border-radius:var(--radius);padding:18px 20px;display:flex;flex-direction:column;gap:4px;margin-bottom:16px}.calc-hero span{color:var(--ink-soft);font-size:15px}.calc-hero strong{font-size:34px;letter-spacing:-.02em}.card{background:var(--light-card);border-radius:var(--radius-lg);padding:20px;margin-bottom:16px;box-shadow:0 1px 2px #0000000a}.card h3{margin:0 0 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th{text-align:left;font-size:12px;color:var(--ink-soft);padding:6px 8px}.price-table td{padding:6px 8px;border-top:1px solid #eceeec}.price-field{width:110px}.link-button{background:none;border:none;color:#2b6cb0;cursor:pointer;font-size:13px;padding:0}.prices-head{margin-top:28px}.invite-row{display:flex;gap:8px;flex-wrap:wrap}.invite-row .field{flex:1 1 180px}.invite-list{list-style:none;padding:0;margin:12px 0 0;font-size:14px}.invite-list li{padding:6px 0;border-top:1px solid #eceeec}