:root{--txt:#111827;--muted:#6b7280;--line:#e5e7eb;--brand:#1d4ed8;--bg:#f3f4f6;--nav:#ffffff;--hero:#eef3f6;--footer:#0b1f46}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--txt);background:var(--bg)}
a{color:inherit;text-decoration:none}
.shell{max-width:1120px;margin:0 auto;padding:0 20px}
.topbar-wrap{background:#fff;border-bottom:1px solid var(--line)}
.topbar{height:62px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:700}
.logo img{width:56px;height:56px;border-radius:10px;border:1px solid #dbe2ef;padding:3px;background:#fff}
.brand{font-size:34px;line-height:1;font-weight:800;letter-spacing:-.3px}
.nav{display:flex;align-items:center;gap:24px;font-size:14px}
.nav a{color:#111827}
.nav .cta{background:var(--brand);color:#fff;padding:9px 14px;border-radius:10px;font-weight:600}
.hero-wrap{background:var(--hero);border-bottom:1px solid var(--line)}
.hero{padding:64px 0 56px;text-align:center}
.hero h1{font-size:64px;line-height:1.05;letter-spacing:-1px;margin:0 0 14px}
.hero p{margin:0 0 28px;color:#4b5563;font-size:24px}
.searchbar{max-width:760px;margin:0 auto;background:#fff;border:1px solid #e5e7eb;border-radius:16px;display:flex;align-items:center;box-shadow:0 6px 18px rgba(0,0,0,.06);overflow:hidden}
.searchbar input{flex:1;border:0;padding:16px 18px;font-size:15px;outline:none}
.searchbar button{margin:6px;background:var(--brand);color:#fff;border:0;padding:12px 18px;border-radius:10px;font-weight:600;cursor:pointer}
.section{padding:34px 0}
.chips{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.chip{background:#f8fafc;border:1px solid #e5e7eb;padding:9px 14px;border-radius:999px;font-size:14px;color:#374151}
.h2{font-size:40px;margin:26px 0 18px;letter-spacing:-.4px}
.tools-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.tool-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;box-shadow:0 2px 8px rgba(17,24,39,.06);min-height:210px}
.tool-card.skeleton{background:linear-gradient(90deg,#f3f4f6,#eef2f7,#f3f4f6);background-size:200% 100%;animation:sh 1.2s infinite}
@keyframes sh{0%{background-position:200% 0}100%{background-position:-200% 0}}
.tool-kicker{display:inline-block;font-size:12px;color:#1e3a8a;background:#eaf1ff;border:1px solid #c9d7f5;border-radius:999px;padding:3px 9px;margin-bottom:8px}
.tool-card h3{font-size:18px;line-height:1.2;margin:0 0 8px}
.tool-card p{margin:0;color:#6b7280;font-size:14px;min-height:38px;line-height:1.35}
.meta{margin-top:8px;font-size:13px;color:#4b5563}
.more{margin-top:10px;display:inline-block;background:#1d4ed8;color:#fff;padding:8px 12px;border-radius:8px;font-size:13px;font-weight:600}
.toolbar{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:10px;margin:14px 0 16px}
.input,.select{width:100%;min-height:44px;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;font-size:16px;color:#111827}
.posts-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 2px 8px rgba(17,24,39,.06)}
.post-card-link{display:block;transition:transform .14s ease, box-shadow .14s ease}
.post-card-link:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(17,24,39,.12)}
.tool-card.post-card-link{color:inherit;text-decoration:none}
.post-thumb{height:140px;background:linear-gradient(135deg,#1d4ed8,#0b1f46);display:flex;align-items:stretch;padding:0;color:#fff;font-weight:700;overflow:hidden}
.post-thumb picture{display:block;width:100%;height:100%}
.post-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.post-body{padding:14px}
.post-body h3{margin:0 0 8px;font-size:18px;line-height:1.2}
.post-body p{margin:0;color:#6b7280;font-size:14px;min-height:52px}
.date{font-size:12px;color:#6b7280;margin-top:10px}
.footer{margin-top:24px;background:var(--footer);color:#c9d4ee}
.footer-inner{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:24px;padding:34px 0}
.footer h4{margin:0 0 10px;font-size:15px;color:#fff}
.footer a{display:flex;align-items:center;min-height:30px;color:#c9d4ee;margin:4px 0;font-size:14px;padding:4px 0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);padding:14px 0;font-size:12px;color:#9fb0d5;display:flex;justify-content:space-between}
.detail-cols{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:980px){.hero h1{font-size:42px}.hero p{font-size:18px}.tools-grid{grid-template-columns:1fr 1fr}.posts-grid{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr 1fr}.brand{font-size:22px}.nav{gap:14px}.toolbar{grid-template-columns:1fr}.detail-cols{grid-template-columns:1fr}}
@media(max-width:640px){.topbar{height:auto;padding:10px 0;flex-direction:column;gap:10px}.tools-grid{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}}