:root{
  --navy:#0B2A47; --navy2:#123A5E; --steel:#2E6E9E; --gold:#C39B3C; --goldl:#E4C77A;
  --ink:#16212C; --ink2:#3C4C5B; --muted:#6E7F8F; --line:#DFE6EC; --soft:#F5F8FA; --white:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);line-height:1.72;
  font-family:"Segoe UI","Helvetica Neue",Helvetica,Arial,sans-serif;-webkit-text-size-adjust:100%}
h1,h2,h3,h4{margin:0;color:var(--navy);line-height:1.24;letter-spacing:-.015em;font-weight:700}
p{margin:0}
a{color:inherit}
img{display:block;max-width:100%;height:auto}
.wrap{width:min(1180px,92vw);margin:0 auto}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.hd{display:flex;align-items:center;gap:26px;height:74px}
.brand{font-size:20px;font-weight:700;color:var(--navy);letter-spacing:-.01em;text-decoration:none;white-space:nowrap}
.brand small{display:block;font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--steel);font-weight:700}
nav{margin-left:auto;display:flex;gap:26px}
nav a{font-size:14px;color:var(--ink2);text-decoration:none;font-weight:600;white-space:nowrap}
nav a:hover{color:var(--navy);box-shadow:inset 0 -2px 0 var(--gold)}
.hd .btn{flex:0 0 auto}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;padding:12px 22px;border-radius:8px;
  font-size:14px;font-weight:700;text-decoration:none;border:1px solid transparent;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn--gold{background:var(--gold);color:#22180A;box-shadow:0 8px 20px rgba(195,155,60,.28)}
.btn--navy{background:var(--navy);color:#fff}
.btn--ghost{border-color:#C9D4DE;color:var(--navy);background:#fff}
.btn svg{width:16px;height:16px;flex:0 0 auto}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.hero .wrap{position:relative;z-index:2;padding:92px 0 0}
.hero h1{color:#fff;font-size:clamp(30px,4.4vw,54px);max-width:16em;letter-spacing:-.022em}
.hero p.sub{margin-top:22px;font-size:clamp(15px,1.5vw,18px);color:#CBD8E3;max-width:44em}
.hero .cta{margin-top:34px;display:flex;flex-wrap:wrap;gap:14px}
.tags{margin-top:30px;display:flex;flex-wrap:wrap;gap:10px}
.tag{font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:#DCE6EF;border:1px solid rgba(255,255,255,.24);border-radius:99px;padding:7px 14px}
.hero figure{margin:56px 0 0;position:relative;border-radius:14px 14px 0 0;overflow:hidden;
  box-shadow:0 -20px 60px rgba(0,0,0,.28)}
.hero figure img{width:100%;aspect-ratio:16/7.4;object-fit:cover}
.hero .facts{position:relative;z-index:2;background:var(--navy2);border-top:1px solid rgba(255,255,255,.12)}
.hero .facts .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;padding:0}
.fact{padding:26px 4px 26px 0}
.fact b{display:block;font-size:clamp(20px,2.3vw,28px);color:#fff;letter-spacing:-.01em}
.fact span{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#9FB4C6;font-weight:700}

/* ---------- sections ---------- */
.sec{padding:88px 0}
.sec--soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.kicker{display:flex;align-items:center;gap:12px;font-size:11px;font-weight:700;letter-spacing:.24em;
  text-transform:uppercase;color:var(--steel);margin-bottom:14px}
.kicker i{width:34px;height:3px;background:var(--gold);display:block;flex:0 0 auto}
.sec h2{font-size:clamp(24px,3vw,36px);max-width:22em}
.sec .lead{margin-top:18px;font-size:16.5px;color:var(--ink2);max-width:62em}
.grid{display:grid;gap:22px;margin-top:40px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.sec--soft .card{box-shadow:0 10px 26px rgba(11,42,71,.05)}
.card .ph{width:100%;aspect-ratio:16/10;object-fit:cover}
.card .cb{padding:22px 22px 24px}
.card h3{font-size:16.5px;margin-bottom:8px}
.card p{font-size:14px;color:var(--ink2)}
.card .meta{margin-top:12px;font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--gold)}
.spec{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink2)}
.spec b{color:var(--navy)}

/* profile split */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:start}
.split .txt p+p{margin-top:16px}
.split img{border-radius:12px;width:100%;object-fit:cover}

/* logos */
.logo-strip{background:#fff;border:1px solid var(--line);border-radius:12px;padding:30px 34px;margin-top:34px}
.logo-strip img{width:100%;max-width:900px;margin:0 auto}

/* certification */
.certs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.cert{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;
  display:flex;flex-direction:column;gap:14px;text-decoration:none;
  box-shadow:0 10px 26px rgba(11,42,71,.05);transition:transform .15s ease,box-shadow .15s ease}
.cert:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(11,42,71,.12)}
.cert img{width:100%;aspect-ratio:3/3.4;object-fit:contain;object-position:top;background:var(--soft);border-radius:8px}
.cert h3{font-size:15px}
.cert span{font-size:12.5px;color:var(--muted)}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.badge{font-size:12px;font-weight:700;color:var(--navy);background:#fff;border:1px solid var(--line);
  border-radius:99px;padding:9px 16px}

/* contact */
.ccards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:38px}
.cc{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.cc img{width:100%;aspect-ratio:3/2;object-fit:cover}
.cc .in{padding:16px 18px 20px}
.cc .rg{font-size:10.5px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);margin-bottom:8px}
.cc p{font-size:13px;color:var(--ink2);line-height:1.62}
.cc a{color:var(--navy);font-weight:600;text-decoration:none;border-bottom:1px solid #EBDCB4}
.chatrow{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}

/* footer */
footer{background:var(--navy);color:#9FB4C6;padding:56px 0 34px;font-size:13.5px}
footer .fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px}
footer b{color:#fff}
footer a{color:#CBD8E3;text-decoration:none;display:block;margin-top:9px}
footer a:hover{color:var(--goldl)}
footer .fbot{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px}

/* floating chat */
.chat{position:fixed;right:22px;bottom:22px;z-index:80;font-family:inherit}
.chat .menu{background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 18px 44px rgba(11,42,71,.22);padding:12px 14px 11px;text-align:center}
.chat .mtitle{font-size:12.5px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  color:var(--navy);margin-bottom:9px;white-space:nowrap}
.chat .mrow{display:flex;gap:8px;justify-content:center}
.chat .mrow a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;
  border-radius:10px;text-decoration:none;transition:background .15s ease}
.chat .mrow a:hover{background:var(--soft)}
.chat .mrow svg{width:18px;height:18px;display:block}
.chat{right:14px;bottom:14px}

/* responsive */
@media (max-width:1020px){
  .g4,.ccards{grid-template-columns:repeat(2,1fr)}
  .g3,.certs{grid-template-columns:repeat(2,1fr)}
  nav{display:none}
}
@media (max-width:720px){
  .sec{padding:60px 0}
  .hero .wrap{padding:60px 0 0}
  .split{grid-template-columns:1fr;gap:30px}
  .g2,.g3,.g4,.certs,.ccards{grid-template-columns:1fr}
  .hero .facts .wrap{grid-template-columns:repeat(2,1fr);gap:0}
  .fact{padding:18px 0}
  footer .fgrid{grid-template-columns:1fr;gap:26px}
  .chat{right:14px;bottom:14px}
  .hd{height:64px;gap:14px}
  .brand{font-size:17px}
}

/* ---------- SEO v1 additions ---------- */
.lede{font-size:17px;color:var(--ink2);max-width:860px;margin-top:22px}
.hero .lede{color:rgba(255,255,255,.82)}
.crumbs{font-size:12.5px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;font-weight:700;margin-bottom:18px}
.crumbs a{color:var(--steel);text-decoration:none}
.langbar{display:flex;flex-wrap:wrap;gap:8px;font-size:12.5px}
.langbar a{padding:5px 10px;border:1px solid var(--line);border-radius:6px;text-decoration:none;color:var(--ink2)}
.langbar a[aria-current="true"]{border-color:var(--gold);color:var(--navy);font-weight:700}
.art{max-width:900px}
.art h2{font-size:26px;margin-top:38px}
.art h3{font-size:18px;margin-top:26px}
.art p{margin-top:14px;color:var(--ink2)}
.art ul,.art ol{margin:14px 0 0 20px;color:var(--ink2)}
.art li{margin-top:8px}
.art table{width:100%;border-collapse:collapse;margin-top:20px;font-size:14px}
.art th{background:var(--navy);color:#fff;text-align:left;padding:11px 14px;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase}
.art td{padding:11px 14px;border-bottom:1px solid var(--line);color:var(--ink2);vertical-align:top}
.art tr:nth-child(even) td{background:var(--soft)}
.art .note{background:var(--soft);border-left:3px solid var(--gold);padding:16px 20px;margin-top:22px;font-size:14.5px;color:var(--ink2)}
.art .note b{color:var(--navy)}
.art figure{margin-top:24px}
.art figure img{border-radius:12px;width:100%}
.art figcaption{font-size:12.5px;color:var(--muted);margin-top:10px}
.cta-inline{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
@media(max-width:720px){.art h2{font-size:22px}}

/* ---------- knowledge hub ---------- */
.kb{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:74px 0;margin-top:0}
.kbgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.kbcard{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 26px;
  text-decoration:none;transition:transform .16s ease,box-shadow .16s ease}
.kbcard:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(11,42,71,.10)}
.kbcard h3{font-size:19px;color:var(--navy)}
.kbcard p{font-size:14.5px;color:var(--ink2);margin-top:10px}
.kbcard .kblink{display:inline-block;margin-top:16px;font-size:12.5px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;color:var(--gold)}
@media(max-width:940px){.kbgrid{grid-template-columns:1fr}}

/* ---------- header logo（2026-09-25 加入） ---------- */
/* 品牌块改为「图标在上、两行文字在下」；行高收紧，使整块 67px 仍容于 74px 的 .hd */
.brand{line-height:1.25}
.brand .blogo{display:block;height:30px;width:auto;margin:0 0 3px}
@media (max-width:720px){.brand{line-height:1.2}.brand .blogo{height:23px;margin-bottom:2px}}

/* ---------- 右侧竖排四个悬浮联系图标（2026-09-25 加入） ---------- */
.talkrail{position:fixed;right:14px;top:50%;transform:translateY(-50%);z-index:80;display:flex;flex-direction:column;gap:8px}
.talkrail a{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 20px rgba(11,42,71,.16);text-decoration:none;transition:transform .15s ease,box-shadow .15s ease}
.talkrail a:hover{transform:translateX(-3px);box-shadow:0 10px 24px rgba(11,42,71,.24)}
.talkrail svg{width:20px;height:20px;display:block}
@media (max-height:560px){.talkrail{top:auto;bottom:14px;transform:none}}
@media (max-width:720px){.talkrail{right:8px;gap:6px}.talkrail a{width:38px;height:38px;border-radius:10px}.talkrail svg{width:18px;height:18px}}

/* ---------- 移动端头部收口（2026-09-25 加入）：品牌标语换行 + 按钮缩小，消除 375px 横向溢出 ---------- */
@media (max-width:720px){
  .hd{gap:10px}
  .brand{white-space:normal;font-size:15px;line-height:1.2}
  .brand small{letter-spacing:.1em}
  .hd .btn{padding:8px 12px;font-size:12px}
}
.tbl-scroll{overflow-x:auto;max-width:100%}

/* 子页紧凑品牌条 */
.bbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;max-width:1180px;margin:0 auto;padding:14px 24px 10px;border-bottom:1px solid rgba(11,42,71,.08)}
.bbar-logo{display:block;line-height:0;text-decoration:none}
.bbar-logo img{display:block;height:30px;width:auto}
.bbar-lang{display:flex;flex-wrap:wrap;gap:5px;align-items:center}
.bbar-lang a{display:block;line-height:0;border-radius:2px}
.bbar-lang svg{display:block;width:22px;height:15px;border:1px solid rgba(11,42,71,.20);border-radius:2px}
.bbar-lang a[aria-current="true"] svg{border-color:#C39B3C;box-shadow:0 0 0 2px #C39B3C}
@media(max-width:720px){.bbar{padding:12px 14px 8px;justify-content:center}.bbar-logo img{height:24px}.bbar-lang svg{width:19px;height:13px}}