:root{
  --blue:#0f3a6d; --blue2:#1a5fa8; --blue3:#2d7dd2; --sky:#eaf3fc;
  --bg:#f5f8fb; --card:#ffffff; --ink:#1f2937; --muted:#5b6b7d;
  --line:#dfe7ef; --gold:#c9a227; --green:#15803d; --red:#c0392b;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Segoe UI",sans-serif;background:var(--bg);color:var(--ink);line-height:1.8;font-size:15.5px}
a{color:var(--blue2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* 顶部 */
header.site{background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(15,58,109,.06);position:sticky;top:0;z-index:50}
header.site .wrap{max-width:1280px;display:flex;align-items:center;justify-content:space-between;height:68px;gap:10px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{height:42px}
.brand .bt{line-height:1.25;white-space:nowrap}
.brand .bt b{display:block;font-size:17px;color:var(--blue)}
.brand .bt span{font-size:11px;color:var(--muted);letter-spacing:.3px}
nav.main{display:flex;flex-wrap:nowrap;gap:0;justify-content:center;flex:1;min-width:0}
nav.main a{padding:7px 15px;font-size:16px;color:#2c3e50;border-radius:6px;white-space:nowrap;flex-shrink:0}
nav.main a:hover,nav.main a.on{background:var(--sky);color:var(--blue);text-decoration:none}
.top-tel{background:var(--blue);color:#fff;padding:8px 14px;border-radius:8px;font-size:13.5px;white-space:nowrap;flex-shrink:0}
.top-tel small{display:block;font-size:11px;opacity:.8;line-height:1.2}
@media(max-width:1260px){.brand .bt span{display:none}}
@media(max-width:1140px){.brand .bt{display:none}}
@media(max-width:980px){.top-tel{display:none}nav.main{display:none}}

/* 首屏 */
.hero{background:linear-gradient(135deg,#0b2c55 0%,#0f3a6d 45%,#1a5fa8 100%);color:#fff;padding:72px 0 84px}
.hero h1{font-size:34px;line-height:1.4;margin-bottom:14px}
.hero h1 em{font-style:normal;color:#7fc0ff}
.hero p.sub{font-size:16.5px;opacity:.92;max-width:760px;margin-bottom:26px}
.hero .chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.hero .chips span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:6px 15px;border-radius:20px;font-size:13.5px}
.btnrow{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:8px;font-size:15px;font-weight:600}
.btn.primary{background:#fff;color:var(--blue)}
.btn.ghost{border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn:hover{text-decoration:none;opacity:.92}

/* 区块 */
section.block{padding:52px 0}
section.block.alt{background:#fff}
h2.sec{font-size:25px;color:var(--blue);text-align:center;margin-bottom:8px}
p.secsub{text-align:center;color:var(--muted);font-size:14px;margin-bottom:32px}
.grid{display:grid;gap:18px}
.g-contact{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:1020px){.g-contact{grid-template-columns:repeat(2,1fr)}}
@media(max-width:860px){.g2,.g3,.g4,.g-contact{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px 24px}
.card h3{font-size:17px;color:var(--blue);margin-bottom:8px}
.card p{font-size:14px;color:var(--muted)}
.card .ic{font-size:26px;margin-bottom:8px;display:block}
.num-badge{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--sky);color:var(--blue2);font-weight:700;margin-bottom:10px}

/* 信任条 */
.trustbar{background:var(--blue);color:#fff;padding:34px 0}
.trustbar .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center}
@media(max-width:860px){.trustbar .wrap{grid-template-columns:repeat(2,1fr)}}
.trustbar b{font-size:24px;display:block}
.trustbar span{font-size:13px;opacity:.85}

/* FAQ */
details.faq{background:#fff;border:1px solid var(--line);border-radius:10px;padding:0;margin-bottom:12px}
details.faq summary{cursor:pointer;padding:15px 20px;font-weight:600;color:var(--blue);font-size:15px;list-style:none;position:relative;padding-right:44px}
details.faq summary::after{content:"+";position:absolute;right:18px;top:12px;font-size:20px;color:var(--blue3)}
details.faq[open] summary::after{content:"−"}
details.faq .ans{padding:0 20px 16px;font-size:14.5px;color:#3d4a5a}

/* 表格 */
table.t{width:100%;border-collapse:collapse;font-size:14px;background:#fff}
table.t th{background:var(--sky);color:var(--blue);text-align:left;padding:10px 14px;border:1px solid var(--line)}
table.t td{padding:10px 14px;border:1px solid var(--line);vertical-align:top}

/* 服务页头部 */
.pagehero{background:linear-gradient(120deg,#0f3a6d,#1a5fa8);color:#fff;padding:46px 0 38px}
.pagehero h1{font-size:28px;margin-bottom:8px}
.pagehero p{opacity:.9;max-width:780px;font-size:15px}
.crumbs{font-size:12.5px;opacity:.75;margin-bottom:10px}
.crumbs a{color:#cfe4ff}

/* 页脚 */
footer.site{background:#0b2c55;color:#c9d8ea;margin-top:0;padding:46px 0 0;font-size:13.5px}
footer.site h4{color:#fff;font-size:15px;margin-bottom:12px}
footer.site a{color:#8fc1f5}
.fgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;padding-bottom:30px}
@media(max-width:860px){.fgrid{grid-template-columns:1fr}}
.fgrid p{margin:3px 0}
.copyright{border-top:1px solid rgba(255,255,255,.15);padding:16px 0;text-align:center;font-size:12.5px;opacity:.7}

/* 标签/徽章 */
.tag{display:inline-block;padding:2px 12px;border-radius:20px;font-size:12.5px;background:var(--sky);color:var(--blue2);margin:0 6px 8px 0}
.big-list li{margin:10px 0;font-size:15px}
.callout{background:var(--sky);border-left:4px solid var(--blue2);border-radius:0 10px 10px 0;padding:16px 20px;font-size:14.5px;margin:18px 0}
.two-col{display:grid;grid-template-columns:1.2fr .8fr;gap:26px}
@media(max-width:860px){.two-col{grid-template-columns:1fr}}
.timeline{border-left:2px solid var(--line);padding-left:22px;margin:10px 0}
.timeline li{margin:8px 0;position:relative}
.timeline li::before{content:"";position:absolute;left:-28px;top:11px;width:10px;height:10px;border-radius:50%;background:var(--blue3)}