:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--background:#f6f8fb;--surface:#fff;--surface-muted:#eef4f8;--text:#18222f;--muted:#607086;--line:#d9e2ec;--primary:#0b7285;--primary-strong:#075a6a;--accent:#f2a541;--danger:#c2410c;--shadow:0 14px 34px #17243214}*{box-sizing:border-box}html{background:var(--background);min-width:320px}body{color:var(--text);background:var(--background);margin:0;font-family:Arial,PingFang SC,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}.site-shell{width:min(1180px,100% - 32px);margin:0 auto;padding:24px 0 56px}.site-header{justify-content:space-between;align-items:center;gap:24px;min-height:56px;padding:10px 0;display:flex}.brand{color:var(--text);white-space:nowrap;font-size:18px;font-weight:800}.nav-links{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.nav-links a{color:var(--muted);border:1px solid #0000;border-radius:8px;padding:10px 12px;font-size:14px;line-height:1}.nav-links a:hover{border-color:var(--line);color:var(--text);background:var(--surface)}.page-heading{gap:12px;padding:48px 0 28px;display:grid}.eyebrow{color:var(--primary);margin:0;font-size:14px;font-weight:800}.page-heading h1{letter-spacing:0;max-width:760px;margin:0;font-size:44px;line-height:1.14}.page-heading p{max-width:760px;color:var(--muted);margin:0;font-size:17px;line-height:1.75}.tool-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.tool-card{border:1px solid var(--line);background:var(--surface);min-height:220px;box-shadow:var(--shadow);border-radius:8px;align-content:start;gap:18px;padding:22px;display:grid}.tool-card h2{margin:0;font-size:22px;line-height:1.25}.tool-card p{color:var(--muted);margin:0;font-size:15px;line-height:1.7}.tool-card span{color:var(--primary);align-self:end;font-weight:800}.calculator-layout{grid-template-columns:minmax(300px,.8fr) 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var(--line);background:#fbfcfd;align-content:start;gap:9px;min-height:116px;padding:18px;display:grid}.result-item:nth-child(2n){border-right:0}.result-item:nth-last-child(-n+2){border-bottom:0}.result-item span{color:var(--muted);font-size:14px;font-weight:700}.result-item strong{color:var(--text);word-break:break-word;font-size:24px;line-height:1.2}.result-item p{color:var(--muted);margin:0;font-size:13px;line-height:1.5}.result-good strong{color:var(--primary-strong)}.result-warn strong{color:var(--danger)}.schedule-preview{gap:12px;display:grid}.schedule-table{border:1px solid var(--line);border-radius:8px;display:grid;overflow-x:auto}.schedule-row{border-bottom:1px solid var(--line);grid-template-columns:92px repeat(4,minmax(120px,1fr));min-width:620px;display:grid}.schedule-row:last-child{border-bottom:0}.schedule-row span{color:var(--text);white-space:nowrap;padding:12px;font-size:14px}.schedule-head{background:var(--surface-muted);font-weight:800}.loan-section{gap:12px;display:grid}.loan-section+.loan-section{border-top:1px solid var(--line);padding-top:18px}.explain-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.explain-grid section{border-left:4px solid var(--accent);background:#fffaf2;padding:16px}.error-text{color:var(--danger);background:#fff7ed;border:1px solid #c2410c38;border-radius:8px;margin:0;padding:12px;font-weight:800}@media (max-width:960px){.site-header{flex-direction:column;align-items:flex-start}.nav-links{justify-content:flex-start}.tool-grid,.calculator-layout{grid-template-columns:1fr}.page-heading h1{font-size:34px}}@media (max-width:640px){.site-shell{width:min(100% - 20px,1180px);padding-top:14px}.page-heading{padding:30px 0 20px}.page-heading h1{font-size:30px}.page-heading p{font-size:15px}.calculator-card,.tool-card{padding:16px}.form-grid,.result-grid,.explain-grid{grid-template-columns:1fr}.result-item,.result-item:nth-child(2n),.result-item:nth-last-child(-n+2){border-right:0;border-bottom:1px solid var(--line)}.result-item:last-child{border-bottom:0}.result-item strong{font-size:21px}}