:root{--blue:#0b5cab;--blue2:#083d78;--orange:#f59e0b;--text:#1f2937;--muted:#6b7280;--border:#e5e7eb;--soft:#f7f9fc;--white:#fff;--shadow:0 16px 40px rgba(10,40,80,.11);--radius:18px}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:#fff;line-height:1.65}.container{width:min(1180px,92%);margin:auto}.topbar{background:#071f3c;color:#dcecff;font-size:.9rem}.topbar-inner{display:flex;justify-content:space-between;gap:16px;padding:7px 0}.site-header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--border);box-shadow:0 3px 14px rgba(0,0,0,.04)}.nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:72px}.brand{display:flex;gap:10px;align-items:center;font-weight:800;color:var(--blue2);text-decoration:none;font-size:1.14rem}.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),var(--blue2));color:#fff}.main-nav{display:flex;align-items:center;gap:18px}.main-nav a{color:#1f2937;text-decoration:none;font-weight:650}.main-nav a:hover{color:var(--blue)}.nav-toggle{display:none;border:0;background:var(--blue);color:#fff;border-radius:9px;padding:8px 12px}.hero{background:linear-gradient(135deg,#082447,#0b5cab);color:#fff;padding:64px 0 52px}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:center}.badge{display:inline-flex;gap:8px;align-items:center;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);padding:7px 12px;border-radius:999px}.hero h1{font-size:clamp(2rem,4vw,3.6rem);line-height:1.08;margin:16px 0}.hero p{font-size:1.08rem;color:#e5f2ff}.hero-card{background:#fff;color:var(--text);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.hero-card h3{margin-top:0}.stat{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--border)}.stat:last-child{border-bottom:0}.section{padding:46px 0}.section.soft{background:var(--soft)}.section-title{display:flex;justify-content:space-between;align-items:end;gap:14px;margin-bottom:20px}.section-title h2{margin:0;font-size:1.75rem}.grid{display:grid;gap:20px}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:0 10px 30px rgba(18,43,80,.06)}.card h3{margin-top:0}.card a{text-decoration:none;color:var(--blue);font-weight:750}.pill{display:inline-block;padding:5px 10px;border-radius:999px;background:#eaf3ff;color:var(--blue2);font-weight:700;font-size:.82rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--blue);color:#fff!important;text-decoration:none;border:0;border-radius:12px;padding:10px 16px;font-weight:750;cursor:pointer}.btn.alt{background:#f3f7fc;color:var(--blue2)!important}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:start}.article{background:#fff}.article h1{font-size:clamp(2rem,4vw,3rem);line-height:1.12}.meta{color:var(--muted);font-size:.94rem}.article-content{font-size:1.06rem}.article-content img{max-width:100%;height:auto;border-radius:12px}.sidebar-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:18px}.list-clean{list-style:none;margin:0;padding:0}.list-clean li{border-bottom:1px solid var(--border);padding:10px 0}.list-clean li:last-child{border-bottom:0}.calc-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.form-row{display:grid;gap:8px;margin-bottom:14px}.form-row label{font-weight:750}.input,.select,textarea{width:100%;border:1px solid #cfd8e3;border-radius:12px;padding:11px 12px;font:inherit}.result{background:#eef7ff;border-left:4px solid var(--blue);padding:16px;border-radius:12px;margin-top:18px}.table-wrap{overflow:auto;border:1px solid var(--border);border-radius:14px;background:#fff}table{width:100%;border-collapse:collapse}th,td{padding:12px;border-bottom:1px solid var(--border);text-align:left}th{background:#f3f7fc}.site-footer{background:#071f3c;color:#dcecff;margin-top:40px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.5fr;gap:30px;padding:40px 0}.site-footer a{display:block;color:#fff;text-decoration:none;margin:8px 0}.footer-bottom{text-align:center;padding:14px;border-top:1px solid rgba(255,255,255,.12);color:#b9d4ee}.notice{background:#fff8e6;border:1px solid #fedc84;border-radius:14px;padding:14px;color:#754600}.searchbar{display:flex;gap:10px}.searchbar input{flex:1}.tag-list{display:flex;gap:8px;flex-wrap:wrap}.download-card{display:flex;justify-content:space-between;gap:16px;align-items:center}.pagination{display:flex;gap:8px;margin-top:20px}.pagination a,.pagination span{padding:8px 12px;border-radius:10px;border:1px solid var(--border);text-decoration:none;color:var(--text)}.pagination .active{background:var(--blue);color:#fff}@media(max-width:900px){.hero-grid,.article-layout,.footer-grid{grid-template-columns:1fr}.grid-3,.grid-4{grid-template-columns:1fr 1fr}.main-nav{position:absolute;left:0;right:0;top:72px;background:#fff;display:none;flex-direction:column;align-items:start;padding:18px 4%;border-bottom:1px solid var(--border)}.main-nav.open{display:flex}.nav-toggle{display:block}.topbar-inner{flex-direction:column;gap:2px}}@media(max-width:580px){.grid-3,.grid-4{grid-template-columns:1fr}.download-card{display:block}.hero{padding:44px 0}}