:root{
    --teal:#00D1B2; --teal-dark:#00A68C; --teal-deep:#0B7A70; --teal-light:#E6FAF7;
    --ink:#15303b; --muted:#5b7280; --bg:#F9FAFB; --line:#dfeaec;
}
*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);line-height:1.7;background:#fff;}

/* 抵消 Bootstrap 3 默认排版间距，保持页内原有布局 */
.hero h1,.hero h2,.hero h3,.hero h4,.hero p,.hero ul,
.section h1,.section h2,.section h3,.section h4,.section p,.section ul{margin:0;}

.wrap{max-width:1280px;margin:0 auto;padding:0 24px;}
.section{padding:76px 0;}
#subs{max-width:1920px;margin:0 auto;}
.kicker{font-size:12px;letter-spacing:4px;color:var(--teal-dark);font-weight:700;margin-bottom:12px;}
.section .hy-h2{font-size:30px;font-weight:800;margin-bottom:12px;letter-spacing:.5px;}
.sub{font-size:15px;color:var(--muted);max-width:680px;}

/* ===== Hero ===== */
.hero{background:linear-gradient(170deg,#e6faf6 0%,#eef9fb 55%,#ffffff 100%);padding:64px 0 0;border-bottom:1px solid var(--line);max-width:1920px;margin:0 auto;}
.hero-grid{max-width:1280px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.crumb{font-size:13px;color:var(--muted);margin-bottom:20px;}
.crumb b{color:var(--teal-deep);}
.hero h1{font-size:42px;font-weight:800;line-height:1.35;}
.hero h1 em{font-style:normal;color:var(--teal-dark);}
.hero .lead{font-size:16px;font-weight:400;color:var(--muted);margin:20px 0 32px;max-width:580px;}
.hy-btn{display:inline-block;padding:13px 38px;border-radius:30px;font-size:15px;font-weight:600;text-decoration:none;transition:.25s;cursor:pointer;}
.hy-btn-main{background:linear-gradient(90deg,#00A68C,#00D1B2);color:#fff;box-shadow:0 6px 16px rgba(0,209,178,.3);}
.hy-btn-main:hover{transform:translateY(-2px);}
.hy-btn-ghost{background:#fff;color:var(--teal-deep);border:1px solid #9fe8dd;}
/* 产业链标签 */
.chain-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:0 10px 40px rgba(14,80,88,.08);}
.chain-card h4{font-size:13px;letter-spacing:2px;color:var(--teal-deep);margin-bottom:18px;}
.chain-item{display:flex;align-items:center;gap:14px;padding:13px 0;border-bottom:1px dashed var(--line);}
.chain-item:last-child{border-bottom:none;}
.chain-item .dot{width:10px;height:10px;border-radius:50%;background:var(--teal);flex-shrink:0;}
.chain-item .t{font-size:14px;font-weight:700;}
.chain-item .d{font-size:12px;color:var(--muted);}
.hero-note{font-size:11px;color:#9db4bb;padding:16px 24px 26px;max-width:1280px;margin:0 auto;}

/* ===== 子行业版块 ===== */
.sub-block{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-bottom:32px;box-shadow:0 4px 20px rgba(14,80,88,.05);transition:.25s;}
.sub-block:hover{box-shadow:0 12px 36px rgba(14,80,88,.1);}
.sub-head{display:flex;align-items:center;gap:14px;padding:22px 34px;background:linear-gradient(90deg,rgba(0,209,178,.1),rgba(11,122,112,.07));border-bottom:1px solid var(--line);}
.sub-head .badge{font-size:12px;font-weight:800;color:#fff;background:linear-gradient(90deg,#00D1B2,#0B7A70);padding:4px 16px;border-radius:20px;letter-spacing:1px;}
.sub-head h3{font-size:21px;font-weight:800;}
.sub-head .pos{margin-left:auto;font-size:12px;color:#8aa5ad;letter-spacing:1px;}
.sub-body{display:grid;grid-template-columns:1fr 1.35fr;}
.pains{padding:28px 32px;background:#fbfcfe;border-right:1px dashed var(--line);}
.pains h4,.sols h4{font-size:13px;font-weight:800;letter-spacing:3px;margin-bottom:16px;}
.pains h4{color:#c0564f;}
.sols h4{color:var(--teal-deep);}
.pains li{list-style:none;font-size:14px;color:#555;padding:8px 0 8px 24px;position:relative;}
.pains li::before{content:"✖";position:absolute;left:0;color:#d98c86;font-size:12px;top:11px;}
.sols{padding:28px 32px;}
.sols li{list-style:none;font-size:14px;color:#3c525c;padding:8px 0 8px 26px;position:relative;}
.sols li::before{content:"✔";position:absolute;left:0;color:var(--teal);font-weight:700;}
.sols li b{color:#17323c;}

/* ===== 平台能力 ===== */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:48px;}
.cap{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px 26px;transition:.25s;}
.cap:hover{transform:translateY(-3px);border-color:#9fe8dd;box-shadow:0 10px 28px rgba(14,80,88,.1);}
.cap .ic{width:46px;height:46px;border-radius:12px;background:var(--teal-light);display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px;}
.cap h3{font-size:16px;font-weight:700;margin-bottom:8px;}
.cap p{font-size:13px;color:var(--muted);}

/* ===== 安全 ===== */
.sec-band{background:linear-gradient(140deg,#0B7A70,#00A68C 55%,#00D1B2);border-radius:18px;padding:52px 48px;color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.sec-band h2{font-size:26px;font-weight:800;margin-bottom:12px;}
.sec-band p{font-size:14px;opacity:.88;}
.sec-list{list-style:none;}
.sec-list li{padding:12px 0 12px 32px;position:relative;font-size:14px;border-bottom:1px dashed rgba(255,255,255,.2);}
.sec-list li:last-child{border-bottom:none;}
.sec-list li::before{content:"◆";position:absolute;left:2px;top:15px;color:var(--teal-light);font-size:10px;}

/* ===== CTA ===== */
.cta{background:#fff;border:1px solid var(--line);border-left:5px solid var(--teal);border-radius:12px;padding:44px 48px;display:flex;justify-content:space-between;align-items:center;gap:32px;box-shadow:0 8px 30px rgba(14,80,88,.08);}
.cta h2{font-size:24px;font-weight:800;}
.cta p{font-size:14px;color:var(--muted);margin-top:6px;}
.hy-btn-cta{background:linear-gradient(90deg,#00A68C,#00D1B2);color:#fff;border-radius:30px;}

@media(max-width:900px){
    .hero-grid,.sub-body,.sec-band,.cta{grid-template-columns:1fr;}
    .pains{border-right:none;border-bottom:1px dashed var(--line);}
    .cap-grid{grid-template-columns:1fr;}
    .sub-head .pos{display:none;}
    .cta{flex-direction:column;align-items:flex-start;}
    .hero h1{font-size:30px;}
}