:root{--bg:#f7f9fc;--surface:#fff;--surface2:#f4f7fb;--line:#e2e8f0;--text:#111827;--muted:#64748b;--primary:#087f8c;--primary2:#0ea5a8;--accent:#ff2d55;--shadow:0 12px 35px rgba(15,23,42,.07)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;line-height:1.72}a{color:inherit}.container{width:min(1120px,calc(100% - 32px));margin-inline:auto}.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}.logo{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;letter-spacing:-.4px}.logo:before{content:"♪";width:36px;height:36px;border-radius:9px;display:grid;place-items:center;background:#111;color:#fff;text-shadow:-2px 0 #20d5ec,2px 0 #fe2c55}.topnav{display:flex;gap:18px;font-size:14px;font-weight:700}.topnav a{text-decoration:none;color:#475569}.hero{padding:52px 0 12px;text-align:center}.eyebrow{display:inline-block;font-size:12px;font-weight:900;letter-spacing:1.4px;text-transform:uppercase;color:var(--primary);margin-bottom:8px}.page-title{font-size:clamp(36px,6vw,64px);line-height:1.02;letter-spacing:-2.6px;margin:0 auto 14px;max-width:900px}.lead{max-width:760px;margin:0 auto;color:var(--muted);font-size:18px}.tool-wrap{padding:22px 0 32px}.tool-card{max-width:820px;margin:auto;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:26px}.tool-heading{font-size:25px;line-height:1.15;margin:0 0 6px;letter-spacing:-.6px}.tool-desc{color:var(--muted);margin:0 0 18px}.tool-card input[type=text]{width:100%;height:54px;border:1px solid #cfd8e3;background:#fff;border-radius:10px;padding:0 16px;font:inherit;color:var(--text);outline:none}.tool-card 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var(--line);background:#f8fafc;border-radius:9px;text-decoration:none;color:#334155;font-size:14px;font-weight:750}.related a:hover{border-color:#9bcbd0;color:var(--primary)}.faq{display:grid;gap:9px}.faq-item{border:1px solid var(--line);background:#f8fafc;border-radius:10px;padding:15px}.faq-item b{display:block;margin-bottom:4px}.breadcrumbs{padding:25px 0 0;font-size:13px;color:#718096}.breadcrumbs a{text-decoration:none}.corp{max-width:900px;margin:45px auto 70px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:clamp(26px,5vw,52px)}.corp h1{font-size:clamp(34px,5vw,54px);letter-spacing:-1.8px;margin-top:0}.site-footer{background:#fff;border-top:1px solid var(--line);padding:34px 0;color:#64748b;font-size:13px}.footer-links{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:10px}.footer-links a{text-decoration:none;color:#475569;font-weight:650}.overlay{display:none;position:fixed;inset:0;z-index:100;background:rgba(15,23,42,.58);align-items:center;justify-content:center;padding:18px}.modal{width:min(440px,100%);background:#fff;border-radius:16px;padding:28px;text-align:center;box-shadow:0 25px 70px rgba(15,23,42,.25)}.modal h2{margin-top:0}.active-site{background:var(--primary);color:#fff}.cluster-intro{font-size:14px;color:#64748b}@media(max-width:820px){.topnav{display:none}.content-layout{grid-template-columns:1fr}.toc{position:static}.amount-grid{grid-template-columns:repeat(2,1fr)}.page-title{letter-spacing:-1.5px}.tool-card{padding:18px}.related{grid-template-columns:1fr}}@media(max-width:480px){.container{width:min(100% - 22px,1120px)}.hero{padding-top:34px}.page-title{font-size:36px}.tool-card{border-radius:14px}.amount-item{padding:13px 8px}}