/* LogisticsInsider.vn — B2B professional: navy · trắng ngà · vàng đồng */
:root{
  --navy:#12263f; --navy2:#1b3a5c; --ink:#22303f; --mut:#5b6b7c;
  --paper:#fbf9f4; --card:#ffffff; --line:#e3ddd0;
  --gold:#b8860b; --gold2:#8a6d2a; --good:#2f6b4a; --bad:#9e2b25;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:Georgia,'Times New Roman',serif;background:var(--paper);color:var(--ink);line-height:1.75;font-size:17px}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
a{color:var(--navy2);text-decoration:none}
a:hover{color:var(--gold)}

/* header */
header{background:var(--navy);color:#f5f0e6;padding:14px 0;position:sticky;top:0;z-index:9;box-shadow:0 2px 8px rgba(0,0,0,.15)}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.brand{font-size:20px;font-weight:700;letter-spacing:.02em;color:#f5f0e6}
.brand em{color:var(--gold);font-style:normal}
nav a{color:#d8d2c4;margin-left:18px;font-size:14.5px;font-family:system-ui,sans-serif}
nav a:hover{color:#fff}

/* hero */
.hero{background:linear-gradient(160deg,var(--navy) 0%,var(--navy2) 100%);color:#f5f0e6;padding:64px 0 56px}
.hero h1{font-size:clamp(28px,4.5vw,42px);line-height:1.25;max-width:640px}
.hero h1 em{color:var(--gold);font-style:normal}
.hero p.sub{margin-top:16px;max-width:560px;color:#cfc8b8;font-size:18px}
.hero .cta{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:6px;font-family:system-ui,sans-serif;font-size:15px;font-weight:600}
.btn.gold{background:var(--gold);color:#fff}
.btn.gold:hover{background:#9a7009;color:#fff}
.btn.ghost{border:1px solid #cfc8b8;color:#f5f0e6}
.btn.ghost:hover{border-color:var(--gold);color:var(--gold)}

/* sections */
section{padding:52px 0}
h2.sec{font-size:26px;color:var(--navy);margin-bottom:8px}
p.lead{color:var(--mut);margin-bottom:26px;font-size:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:24px 26px;margin-bottom:16px;box-shadow:0 1px 4px rgba(20,30,50,.04)}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.tier h3{color:var(--navy);font-size:19px;margin-bottom:6px}
.tier .price{font-family:system-ui,sans-serif;font-weight:700;color:var(--gold2);font-size:15px;margin-bottom:10px}
.tier ul{list-style:none}
.tier li{padding:4px 0 4px 22px;position:relative;font-size:15.5px}
.tier li:before{content:"—";position:absolute;left:0;color:var(--gold)}

/* article list */
.post{display:block;border-left:3px solid var(--gold);padding:14px 18px;background:var(--card);border-radius:0 8px 8px 0;margin-bottom:12px;border-top:1px solid var(--line);border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.post h3{color:var(--navy);font-size:18.5px}
.post p{color:var(--mut);font-size:15px;margin-top:4px}
.post .tag{font-family:system-ui,sans-serif;font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--gold2)}

/* article page */
article{padding:48px 0}
article h1{font-size:clamp(26px,3.6vw,34px);color:var(--navy);line-height:1.3;margin-bottom:10px}
article .meta{font-family:system-ui,sans-serif;font-size:13.5px;color:var(--mut);margin-bottom:28px}
article h2{font-size:22px;color:var(--navy);margin:34px 0 10px}
article h3{font-size:18px;color:var(--navy2);margin:24px 0 8px}
article p{margin-bottom:16px}
article ul,article ol{margin:0 0 16px 26px}
article li{margin-bottom:6px}
article table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15.5px}
article th,article td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
article th{background:#f2ede1;color:var(--navy);font-family:system-ui,sans-serif;font-size:14px}
.callout{border-left:4px solid var(--gold);background:#faf5e8;padding:14px 18px;border-radius:0 8px 8px 0;margin:20px 0;font-size:16px}
.placeholder{background:#fdf0d5;border:1px dashed var(--gold);padding:2px 8px;border-radius:4px;font-family:system-ui,sans-serif;font-size:13.5px;color:var(--gold2)}

/* author + disclaimer */
.author{display:flex;gap:16px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:20px;margin:36px 0 16px}
.author .avatar{width:56px;height:56px;border-radius:50%;background:var(--navy);color:var(--gold);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;flex-shrink:0;font-family:system-ui,sans-serif}
.author p{font-size:15px;color:var(--mut);margin:2px 0 0}
.author b{color:var(--navy)}
.disclaimer{font-family:system-ui,sans-serif;font-size:12.5px;color:var(--mut);border-top:1px solid var(--line);padding-top:14px;margin-top:8px}

/* newsletter */
.news-box{background:var(--navy);color:#f5f0e6;border-radius:12px;padding:32px;text-align:center}
.news-box h2{color:#f5f0e6;font-size:24px}
.news-box p{color:#cfc8b8;margin:8px 0 18px;font-size:15.5px}

/* footer */
footer{background:var(--navy);color:#a8a091;padding:34px 0;margin-top:40px;font-family:system-ui,sans-serif;font-size:13.5px}
footer a{color:#d8d2c4}
footer .cols{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
@media(max-width:640px){.hero{padding:44px 0 40px}section{padding:36px 0}}