/* Zace 官网样式 · 移动优先 · 品牌蓝 #2B6FE8 */
:root{
  --brand:#2B6FE8; --brand-d:#1B4FA8; --brand-l:#EAF1FE;
  --ink:#0F1A2E; --body:#33415C; --muted:#6B7A94; --line:#E4E9F2;
  --bg:#FFFFFF; --bg-soft:#F6F8FC; --dark:#0F1A2E;
  --r:14px; --max:1080px;
  --shadow:0 1px 2px rgba(15,26,46,.04),0 8px 24px rgba(15,26,46,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--body);background:var(--bg);line-height:1.7;font-size:16px;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(1.6) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:14px;height:60px}
.logo{display:flex;align-items:center;gap:9px;font-weight:700;color:var(--ink);letter-spacing:.5px;flex-shrink:0}
.logo img{width:30px;height:30px;border-radius:7px}
.logo span{font-size:17px}
.nav-links{display:none;gap:26px;margin-left:auto;font-size:14.5px;color:var(--body)}
.nav-links a:hover{color:var(--brand)}
.nav-cta{display:none;margin-left:8px;padding:8px 16px;background:var(--brand);color:#fff;border-radius:9px;font-size:14.5px;font-weight:600}
.nav-cta:hover{background:var(--brand-d)}
@media(min-width:860px){.nav-links,.nav-cta{display:flex}}

/* ---------- hero ---------- */
.hero{background:linear-gradient(165deg,#0F1A2E 0%,#16305C 55%,#1E4A9E 100%);color:#fff;padding:52px 0 56px;position:relative;overflow:hidden}
.hero:after{content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(43,111,232,.5),transparent 68%)}
.hero .wrap{position:relative;z-index:1}
.badge{display:inline-flex;align-items:center;gap:7px;padding:6px 13px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:999px;font-size:13px;color:#D6E3FA;margin-bottom:18px}
h1{font-size:29px;line-height:1.35;font-weight:800;letter-spacing:-.4px;color:#fff;margin-bottom:14px;max-width:16em}
.sub{font-size:16px;color:#B9CCEC;max-width:30em;margin-bottom:26px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:13px 24px;border-radius:11px;font-weight:600;font-size:15.5px;transition:.18s}
.btn-p{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(43,111,232,.34)}
.btn-p:hover{background:#3C7BF0;transform:translateY(-1px)}
.btn-s{background:rgba(255,255,255,.09);color:#fff;border:1px solid rgba(255,255,255,.2)}
.btn-s:hover{background:rgba(255,255,255,.16)}
.trust{margin-top:26px;padding-top:20px;border-top:1px solid rgba(255,255,255,.13);font-size:13.5px;color:#9FB6DA}
@media(min-width:860px){.hero{padding:78px 0 84px}h1{font-size:42px}.sub{font-size:17.5px}}

/* ---------- section ---------- */
section{padding:52px 0}
.s-soft{background:var(--bg-soft)}
.shead{margin-bottom:30px}
.shead h2{font-size:25px;font-weight:800;color:var(--ink);letter-spacing:-.3px;margin-bottom:9px}
.shead p{color:var(--muted);max-width:44em}
@media(min-width:860px){section{padding:70px 0}.shead h2{font-size:30px}}

/* ---------- 痛点 ---------- */
.pains{display:grid;gap:14px}
@media(min-width:720px){.pains{grid-template-columns:repeat(3,1fr)}}
.pain{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.pain b{display:block;color:var(--ink);font-size:16.5px;margin-bottom:7px}
.pain p{font-size:14.5px;color:var(--muted)}
.pain .emo{font-size:21px;margin-bottom:9px;display:block}

/* ---------- 服务卡 ---------- */
.cards{display:grid;gap:14px}
@media(min-width:680px){.cards{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1000px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:.18s}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(15,26,46,.1)}
.card .num{font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:1px;margin-bottom:9px}
.card h3{font-size:18px;color:var(--ink);font-weight:700;margin-bottom:8px}
.card p{font-size:14.5px;color:var(--muted);margin-bottom:15px;flex:1}
.price{font-size:14px;font-weight:700;color:var(--brand);border-top:1px dashed var(--line);padding-top:12px}
.price small{display:block;font-weight:400;color:var(--muted);font-size:12.5px;margin-top:3px}

/* ---------- 流程 ---------- */
.steps{display:grid;gap:12px;counter-reset:s}
@media(min-width:720px){.steps{grid-template-columns:repeat(5,1fr)}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px 16px;text-align:center}
.step i{display:block;width:32px;height:32px;line-height:32px;border-radius:50%;background:var(--brand-l);color:var(--brand);font-style:normal;font-weight:800;margin:0 auto 11px}
.step b{display:block;color:var(--ink);font-size:15.5px;margin-bottom:5px}
.step span{font-size:13.5px;color:var(--muted)}

/* ---------- 检测门 ---------- */
.checkbox{background:linear-gradient(150deg,#16305C,#1E4A9E);border-radius:20px;padding:32px 24px;color:#fff;display:grid;gap:24px;align-items:center}
@media(min-width:860px){.checkbox{grid-template-columns:1.3fr .7fr;padding:42px 38px}}
.checkbox h2{color:#fff;font-size:25px;font-weight:800;margin-bottom:10px}
.checkbox p{color:#B9CCEC;margin-bottom:20px}
.ck-list{list-style:none;display:grid;gap:9px}
.ck-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:#D6E3FA}
.ck-list li:before{content:"✓";color:#6EE7B7;font-weight:800;flex-shrink:0}
.ck-side{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:22px;text-align:center}
.ck-side b{display:block;font-size:31px;color:#fff;line-height:1.1}
.ck-side span{font-size:13.5px;color:#9FB6DA}

/* ---------- 联系 ---------- */
.contact{display:grid;gap:22px}
@media(min-width:860px){.contact{grid-template-columns:1fr 1fr;align-items:start}}
.qr{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px;text-align:center;box-shadow:var(--shadow)}
.qr img{width:100%;max-width:270px;margin:0 auto 14px;border-radius:10px}
.qr h3{font-size:17px;color:var(--ink);margin-bottom:6px}
.qr p{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.qr .tag{display:inline-block;background:var(--brand-l);color:var(--brand);padding:5px 12px;border-radius:999px;font-size:13px;font-weight:600}
.info h3{font-size:20px;color:var(--ink);margin-bottom:12px}
.info dl{display:grid;gap:11px;font-size:14.5px}
.info dt{color:var(--muted);font-size:13px}
.info dd{color:var(--ink);font-weight:600}
.info .note{margin-top:16px;font-size:13.5px;color:var(--muted);background:var(--bg-soft);border-radius:10px;padding:13px 15px;border:1px solid var(--line)}
/* 三入口 */
.chans{display:grid;gap:10px}
@media(min-width:560px){.chans{grid-template-columns:repeat(3,1fr)}}
.chan{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:15px 16px}
.chan-t{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:6px}
.chan p{font-size:13.5px;color:var(--muted);margin-bottom:9px}
.chan-t2{display:inline-block;font-size:12.5px;font-weight:600;color:var(--brand);background:var(--brand-l);padding:4px 10px;border-radius:999px;word-break:break-all}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:10px;max-width:820px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px 18px}
.faq summary{cursor:pointer;font-weight:600;color:var(--ink);font-size:15.5px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";float:right;color:var(--brand);font-weight:700}
.faq details[open] summary:after{content:"−"}
.faq p{margin-top:10px;font-size:14.5px;color:var(--muted)}

/* ---------- footer ---------- */
footer{background:var(--dark);color:#8FA5C7;padding:38px 0 30px;font-size:13.5px}
.fgrid{display:flex;flex-wrap:wrap;gap:22px;justify-content:space-between;align-items:flex-start}
.fbrand{display:flex;align-items:center;gap:9px;color:#fff;font-weight:700;font-size:16px;margin-bottom:9px}
.fbrand img{width:28px;height:28px;border-radius:6px}
.flinks{display:flex;gap:22px;flex-wrap:wrap}
.flinks a:hover{color:#fff}
.fbot{margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:12.5px;color:#6C82A5;line-height:1.9}

/* ---------- 移动端底部CTA ---------- */
.mcta{display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.97);border-top:1px solid var(--line);gap:10px}
.mcta .btn{flex:1 1 0;min-width:0;padding:12px 8px;font-size:15px;white-space:nowrap}
@media(max-width:859px){.mcta{display:flex}body{padding-bottom:72px}}