:root{--navy:#0d2240;--navy-2:#13315c;--gold:#c2902f;--gold-light:#e0b454;--ink:#1c2733;--muted:#5c6b7a;--line:#e6e9ee;--bg:#fff;--bg-soft:#f6f8fb;--shadow:0 10px 30px rgba(13,34,64,.08);--shadow-lg:0 18px 50px rgba(13,34,64,.16)}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Be Vietnam Pro',system-ui,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.bwrap{max-width:880px;margin:0 auto;padding:0 22px}
.bhead{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bhead .nav{display:flex;align-items:center;justify-content:space-between;height:68px;max-width:1100px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;color:var(--navy)}
.brand .logo{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:var(--gold-light);display:grid;place-items:center;font-weight:700;font-size:1.2rem}
.brand small{display:block;font-weight:500;color:var(--muted);font-size:.7rem}
.bnav{display:flex;align-items:center;gap:20px}
.bnav a{font-weight:500;color:var(--ink);font-size:.93rem}
.bnav a:hover{color:var(--gold)}
.bnav .callbtn{background:var(--gold);color:#fff;padding:9px 16px;border-radius:50px;font-weight:700}
@media(max-width:720px){.bnav a:not(.callbtn){display:none}}
.article{padding:34px 0 60px}
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:18px}
.crumb a:hover{color:var(--gold)}
.article h1{color:var(--navy);font-size:clamp(1.6rem,4vw,2.3rem);font-weight:800;line-height:1.25;margin-bottom:20px}
.cover{width:100%;border-radius:14px;box-shadow:var(--shadow);margin-bottom:28px}
.content h2{color:var(--navy);font-size:1.4rem;font-weight:800;margin:30px 0 12px}
.content h3{color:var(--navy);font-size:1.13rem;font-weight:700;margin:22px 0 10px}
.content p{margin:0 0 16px}
.content ul,.content ol{margin:0 0 16px 22px}
.content li{margin-bottom:7px}
.content strong{color:var(--ink)}
.content blockquote{border-left:4px solid var(--gold);background:var(--bg-soft);padding:14px 18px;border-radius:8px;color:var(--muted);font-size:.95rem;margin:18px 0}
.cta-box{margin:40px 0 10px;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;border-radius:16px;padding:32px;text-align:center}
.cta-box h3{color:#fff;font-size:1.3rem;margin-bottom:8px}
.cta-box p{color:#cdd6e2;margin-bottom:20px}
.cta-box .btn{display:inline-block;margin:6px;background:var(--gold);color:#fff;font-weight:700;padding:13px 24px;border-radius:50px}
.cta-box .btn.alt{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.5)}
.back{display:inline-block;margin-top:26px;color:var(--gold);font-weight:700}
.bfoot{background:var(--navy);color:#cdd6e2;padding:40px 0;font-size:.9rem;text-align:center}
.bfoot a{color:var(--gold-light)}
.bfoot p{margin-bottom:8px}.bfoot .cpy{color:#8fa0b6;margin-top:12px}
/* blog index */
.bhero{background:linear-gradient(150deg,var(--navy),#0a1c34);color:#fff;padding:60px 0;text-align:center}
.bhero h1{color:#fff;font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;margin-bottom:12px}
.bhero p{color:#cdd6e2;max-width:620px;margin:0 auto}
.cat-title{font-size:1.4rem;font-weight:800;color:var(--navy);margin:42px 0 18px;padding-left:14px;border-left:5px solid var(--gold)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media(max-width:860px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid{grid-template-columns:1fr}}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--gold)}
.card img{width:100%;height:170px;object-fit:cover}
.card .cbody{padding:16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.card h3{font-size:1.04rem;color:var(--navy);font-weight:700;line-height:1.3}
.card p{font-size:.9rem;color:var(--muted);flex:1}
.card .more{color:var(--gold);font-weight:700;font-size:.9rem}
.idxwrap{max-width:1100px;margin:0 auto;padding:0 22px 60px}