:root{--brand:#2563eb;--brand-dark:#1e40af;--brand-light:#eff6ff;--brand-tint:#f5f8ff;--text:#0f172a;--text-muted:#64748b;--text-subtle:#94a3b8;--on-brand:#fff;--bg:#f8fafc;--surface:#fff;--border:#e2e8f0;--success:#16a34a;--danger:#dc2626;--warning:#d97706;--radius:8px;--radius-lg:14px;--shadow-card:0 8px 24px #0f172a14;--font:"Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Segoe UI", Roboto, sans-serif;font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:14px;line-height:1.5}*{box-sizing:border-box}body{min-height:100vh;margin:0}h1,h2,h3{color:var(--text);margin:0;font-weight:700}button{font-family:inherit}a{color:var(--brand);text-decoration:none}.muted{color:var(--text-muted)}.hint{color:var(--text-subtle);margin:0;font-size:12px}.error{color:var(--danger);margin:0;font-size:13px}.saved{color:var(--success);margin:0;font-size:13px}.field{flex-direction:column;gap:6px;display:flex}.field>span{color:#334155;font-size:13px;font-weight:500}input{font:inherit;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);outline:none;width:100%;padding:11px 14px}input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-light)}.btn-primary{background:var(--brand);color:var(--on-brand);border-radius:var(--radius);cursor:pointer;border:none;width:100%;padding:12px 16px;font-size:15px;font-weight:500}.btn-primary:hover{background:var(--brand-dark)}.btn-primary:disabled{opacity:.55;cursor:default}.btn-ghost{border:1px solid var(--border);background:var(--surface);color:#334155;border-radius:var(--radius);cursor:pointer;padding:7px 12px;font-size:13px;font-weight:500}.btn-ghost:hover{background:var(--bg)}.auth-bg{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);width:400px;max-width:100%;box-shadow:var(--shadow-card);flex-direction:column;gap:16px;padding:36px 32px;display:flex}.brand{color:var(--brand);margin:0;font-size:26px}.brand-block{flex-direction:column;gap:4px;display:flex}.app{min-height:100vh}.topbar{background:var(--surface);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 28px;display:flex}.brand-sm{color:var(--brand);font-size:18px;font-weight:700}.userbox{align-items:center;gap:14px;display:flex}.content{justify-content:center;padding:40px 20px;display:flex}.col{flex-direction:column;gap:20px;width:760px;max-width:100%;display:flex}.page-head{flex-direction:column;gap:4px;display:flex}.page-head h2{font-size:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;gap:14px;padding:20px;display:flex}.card-title{font-size:15px;font-weight:700}.grade-cards{gap:12px;display:flex}.grade-card{border:1px solid var(--border);background:var(--surface);cursor:pointer;text-align:left;border-radius:10px;flex-direction:column;flex:1;gap:6px;padding:14px;display:flex}.grade-card:hover{border-color:var(--brand)}.grade-card.on{border:2px solid var(--brand);background:var(--brand-light)}.grade-card .g-name{font-size:15px;font-weight:700}.grade-card.on .g-name{color:var(--brand-dark)}.grade-card .g-load{color:var(--brand);font-size:13px;font-weight:600}.grade-card.on .g-load{color:var(--brand-dark)}.grade-card .g-spec{color:var(--text-muted);font-size:12px}.callout{background:var(--brand-light);color:var(--brand-dark);border:1px solid #dbeafe;border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.6}.card-sub{color:var(--text-muted);margin:0;font-size:13px}.stmt{flex-direction:column;gap:8px;display:flex}.stmt-divider{background:#dbeafe;height:1px;margin:4px 0}.info-list{color:var(--text-muted);flex-direction:column;gap:8px;margin:0;padding-left:18px;font-size:13px;line-height:1.6;display:flex}.info-list strong{color:var(--text)}.pill-fixed{background:var(--brand-light);color:var(--brand-dark);border-radius:999px;align-items:center;gap:8px;width:fit-content;padding:8px 14px;font-size:14px;font-weight:600;display:inline-flex}.card.locked{opacity:.5;pointer-events:none}.calc-layout{justify-content:center;align-items:flex-start;gap:24px;display:flex}.summary{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);flex:none;width:260px;padding:20px;position:sticky;top:24px}.summary-title{margin-bottom:14px;font-size:15px}.summary-list{flex-direction:column;gap:12px;margin:0;display:flex}.summary-list>div{justify-content:space-between;gap:12px;font-size:13px;display:flex}.summary-list dt{color:var(--text-muted);flex:none}.summary-list dd{color:var(--text);text-align:right;margin:0;font-weight:500}.summary-list .summary-sub{padding-left:10px}.summary-sub dt,.summary-sub dd{color:var(--text-muted);font-size:12px;font-weight:400}@media (width<=1024px){.calc-layout{flex-direction:column;align-items:stretch}.summary{width:auto;position:static}}.flute-card{text-align:center;align-items:center;gap:4px}.flute-card svg{margin-bottom:4px}.layers{flex-direction:column;gap:10px;margin-top:6px;display:flex}select{font:inherit;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);width:100%;padding:10px 12px}select:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-light);outline:none}.dim-wrap{align-items:center;gap:20px;display:flex}.dim-wrap .dims{flex:1}@media (width<=560px){.dim-wrap{flex-direction:column;align-items:stretch}}.dims{align-items:flex-end;gap:12px;display:flex}.dims .field{flex:1}.dims .x{color:var(--text-subtle);padding-bottom:11px}.result{background:var(--brand-tint);border:1.5px solid var(--brand)}.result .r-title{color:var(--brand-dark);font-size:15px;font-weight:700}.price-row{justify-content:space-between;align-items:center;display:flex}.price-big{color:var(--brand);font-size:28px;font-weight:700}.price-sub{font-size:13px}.stat-cards{grid-template-columns:repeat(4,1fr);gap:14px;display:grid}@media (width<=720px){.stat-cards{grid-template-columns:repeat(2,1fr)}}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;gap:6px;padding:16px 18px;display:flex}.stat-label{color:var(--text-muted);font-size:12px}.stat-value{color:var(--brand-dark);font-size:22px;font-weight:700}.stat-sub{color:var(--text-subtle);font-size:11px}.doc-wrap{max-width:760px;margin:0 auto;padding:32px 20px}.doc-actions{justify-content:space-between;margin-bottom:20px;display:flex}.doc{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px}.doc-head{border-bottom:2px solid var(--text);justify-content:space-between;align-items:flex-start;padding-bottom:16px;display:flex}.doc-title{letter-spacing:8px;margin:0;font-size:28px}.doc-sub{color:var(--text-muted);margin:4px 0 0;font-size:12px}.doc-brand{text-align:right}.doc-brand-name{color:var(--brand);font-size:18px;font-weight:700}.doc-meta{justify-content:space-between;margin:20px 0;font-size:14px;display:flex}.doc-meta>div{align-items:baseline;gap:10px;display:flex}.doc-table{border-collapse:collapse;width:100%;margin-bottom:20px;font-size:14px}.doc-table th,.doc-table td{border:1px solid var(--border);text-align:left;padding:11px 14px}.doc-table th{background:var(--bg);color:#334155;width:180px;font-weight:600}.doc-table .num{text-align:right;font-weight:600}.doc-amount th{background:var(--brand-light);color:var(--brand-dark)}.doc-amount .num{color:var(--brand-dark);font-size:16px}.doc-notes{color:var(--text-muted);margin:24px 0 0;padding-left:18px;font-size:12px;line-height:1.7}@media print{.no-print{display:none!important}.doc-wrap{max-width:none;padding:0}.doc{border:none;border-radius:0;padding:0}body{background:#fff}}.nav{align-items:center;gap:20px;display:flex}.navlink{color:var(--text-muted);font-weight:500}.navlink:hover{color:var(--text)}.navlink.active{color:var(--brand)}.backlink{color:var(--brand);font-size:13px;font-weight:500}.small{font-size:12px}.badge{white-space:nowrap;border-radius:999px;padding:3px 10px;font-size:12px;font-weight:600}.toast-stack{z-index:1000;flex-direction:column;gap:10px;max-width:360px;display:flex;position:fixed;bottom:20px;right:20px}.toast{box-shadow:var(--shadow-card);border-radius:10px;padding:12px 16px;font-size:13.5px;font-weight:500;animation:.18s ease-out toast-in}.toast-success{color:#065f46;background:#ecfdf5;border:1px solid #a7f3d0}.toast-error{color:#991b1b;background:#fef2f2;border:1px solid #fecaca}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.list{overflow-x:auto}.table{border-collapse:collapse;width:100%;font-size:13.5px}.table th{text-align:left;color:var(--text-muted);border-bottom:1px solid var(--border);background:var(--bg);white-space:nowrap;padding:12px 16px;font-size:12px;font-weight:600}.table td{border-bottom:1px solid var(--border);vertical-align:middle;padding:13px 16px}.table tbody tr:last-child td{border-bottom:none}.table tbody tr.clickable{cursor:pointer}.table tbody tr.clickable:hover{background:var(--bg)}.table .num{text-align:right;white-space:nowrap}.table th:first-child,.table td:first-child{padding-left:20px}.table th:last-child,.table td:last-child{padding-right:20px}.table .cell-actions{justify-content:flex-end;gap:6px;display:flex}.table .btn-ghost{padding:5px 10px;font-size:12px}.list{gap:0;padding:0}.order-row{border-bottom:1px solid var(--border);color:var(--text);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.order-row:last-child{border-bottom:none}.order-row:hover{background:var(--bg)}.order-no{color:var(--text);font-weight:600}.order-right{align-items:center;gap:14px;display:flex}.timeline{flex-direction:column;gap:14px;margin:0;padding:0;list-style:none;display:flex}.timeline li{align-items:flex-start;gap:10px;display:flex}.timeline .dot{background:var(--brand);border-radius:50%;flex:none;width:8px;height:8px;margin-top:6px}.code-area{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);resize:vertical;width:100%;padding:12px 14px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12.5px;line-height:1.5}.code-area:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-light);outline:none}.admin-panel{border:1.5px dashed var(--border);background:var(--bg)}.admin-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}@media (width<=560px){.admin-grid{grid-template-columns:1fr}}.admin-row{border-bottom:1px solid var(--border);align-items:center;gap:14px;padding:14px 20px;display:flex}.admin-row:last-child{border-bottom:none}.admin-main{flex-direction:column;flex:1;gap:2px;display:flex}.admin-actions{flex-wrap:wrap;gap:8px;display:flex}