/* ==========================================================
   恒百川服务 HBC · 官网样式
   品牌色取自企业宣传 PPT：深墨 #0D1F2B / 主色 #0E7C86 / 点缀 #F2A93B
   ========================================================== */

:root{
  --ink:#0D1F2B;
  --ink-2:#1B2B33;
  --ink-3:#3A4A54;
  --teal:#0E7C86;
  --teal-600:#0B6A72;
  --teal-100:#E6F1F2;
  --teal-50:#F4F8F8;
  --amber:#F2A93B;
  --amber-100:#FDF3E2;
  --gray:#5C6B73;
  --gray-2:#97A4AC;
  --line:#E3E9EB;
  --line-2:#EDF1F3;
  --bg:#FFFFFF;
  --bg-soft:#F7F6F2;
  --bg-soft2:#F4F8F8;
  --radius:10px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(13,31,43,.06);
  --shadow:0 4px 16px rgba(13,31,43,.07);
  --shadow-lg:0 12px 36px rgba(13,31,43,.11);
  --maxw:1200px;
  --navh:72px;
  --font:"Microsoft YaHei","PingFang SC","Hiragino Sans GB",-apple-system,"Segoe UI",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font);
  color:var(--ink-2);
  background:var(--bg);
  font-size:15px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.wrap-nar{max-width:960px;margin:0 auto;padding:0 24px;}

/* ---------------- 顶部信息条 + 导航 ---------------- */
.topbar{
  background:var(--ink);
  color:#B7C6D0;
  font-size:12.5px;
  letter-spacing:.02em;
}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:36px;}
.topbar .tl{display:flex;gap:20px;align-items:center;}
.topbar b{color:#fff;font-weight:500;}
.topbar .tr{display:flex;gap:18px;align-items:center;}
.topbar .tr span{display:flex;align-items:center;gap:6px;}

header.nav{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:var(--navh);}
.brand{display:flex;align-items:center;gap:12px;flex:none;}
.brand img{height:44px;width:auto;}
.brand .bt{display:flex;flex-direction:column;line-height:1.15;}
.brand .bt strong{font-size:17px;color:var(--ink);font-weight:700;letter-spacing:.02em;}
.brand .bt small{font-size:10.5px;color:var(--gray-2);letter-spacing:.12em;}

.menu{display:flex;align-items:center;gap:4px;}
.menu a{
  display:block;padding:9px 15px;font-size:14.5px;color:var(--ink-3);
  border-radius:7px;transition:.18s;position:relative;
}
.menu a:hover{color:var(--teal);background:var(--teal-50);}
.menu a.on{color:var(--teal);font-weight:600;}
.menu a.on::after{
  content:"";position:absolute;left:15px;right:15px;bottom:3px;height:2px;
  background:var(--teal);border-radius:2px;
}
.nav-cta{
  display:inline-flex;align-items:center;gap:7px;flex:none;
  background:var(--teal);color:#fff;font-size:14px;font-weight:600;
  padding:10px 20px;border-radius:8px;transition:.18s;
}
.nav-cta:hover{background:var(--teal-600);}

.burger{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:8px;}
.burger span{display:block;width:19px;height:2px;background:var(--ink);position:relative;}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:19px;height:2px;background:var(--ink);
}
.burger span::before{top:-6px;}
.burger span::after{top:6px;}

/* ---------------- 通用区块 ---------------- */
.sec{padding:78px 0;}
.sec.soft{background:var(--bg-soft);}
.sec.soft2{background:var(--bg-soft2);}
.sec.ink{background:var(--ink);color:#D9E3E9;}

.head-c{text-align:center;max-width:720px;margin:0 auto 46px;}
.kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--teal);margin-bottom:12px;
}
.kicker.on-ink{color:#67C6CE;}
.sec.ink .kicker{color:#67C6CE;}
h2.t{font-size:30px;font-weight:700;color:var(--ink);letter-spacing:-.4px;line-height:1.3;}
.sec.ink h2.t{color:#fff;}
.head-c p{margin-top:12px;color:var(--gray);font-size:14.5px;}
.sec.ink .head-c p{color:#93A6B0;}
.rule{width:44px;height:3px;background:var(--teal);border-radius:2px;margin:18px auto 0;}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;
  padding:12px 24px;border-radius:8px;transition:.18s;
}
.btn-p{background:var(--teal);color:#fff;}
.btn-p:hover{background:var(--teal-600);transform:translateY(-1px);box-shadow:0 8px 20px rgba(14,124,134,.25);}
.btn-g{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.42);}
.btn-g:hover{background:rgba(255,255,255,.1);border-color:#fff;}
.btn-o{background:#fff;color:var(--teal);border:1px solid var(--teal);}
.btn-o:hover{background:var(--teal-50);}
.btn-a{background:var(--amber);color:#3A2A08;}
.btn-a:hover{background:#E09A2C;}

/* ---------------- 内页横幅 ---------------- */
.phero{
  position:relative;background:var(--ink);color:#fff;overflow:hidden;
  padding:58px 0 54px;
}
.phero .bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.30;
}
.phero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(13,31,43,.94) 0%,rgba(13,31,43,.78) 55%,rgba(14,124,134,.42) 100%);
}
.phero .wrap{position:relative;z-index:2;}
.crumb{font-size:12.5px;color:#8FA6B1;margin-bottom:14px;letter-spacing:.04em;}
.crumb a:hover{color:#67C6CE;}
.crumb span{margin:0 7px;opacity:.6;}
.phero h1{font-size:32px;font-weight:700;letter-spacing:-.4px;line-height:1.3;}
.phero .sub{margin-top:10px;color:#A9BCC6;font-size:14.5px;max-width:640px;}
.phero .en{font-size:11.5px;letter-spacing:.24em;color:#5E7C88;margin-bottom:10px;font-weight:600;}

/* ---------------- 首页 Hero ---------------- */
.hero{position:relative;min-height:490px;display:flex;align-items:center;color:#fff;overflow:hidden;background:var(--ink);}
.hero-slide{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:0;transition:opacity 1.4s ease;
}
.hero-slide.on{opacity:1;}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(9,22,30,.93) 0%,rgba(9,22,30,.80) 42%,rgba(9,22,30,.35) 100%);
}
.hero .wrap{position:relative;z-index:3;padding-top:52px;padding-bottom:60px;}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:12.5px;font-weight:600;
  color:#7FD3DA;letter-spacing:.14em;margin-bottom:20px;
}
.hero .eyebrow::before{content:"";width:26px;height:2px;background:var(--amber);}
.hero h1{font-size:46px;line-height:1.24;font-weight:700;letter-spacing:-.8px;max-width:660px;}
.hero h1 em{font-style:normal;color:var(--amber);}
.hero .lead{margin-top:20px;font-size:16px;color:#B4C6D0;max-width:560px;line-height:1.85;}
.hero .acts{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap;}
.hero .dots{position:absolute;right:32px;bottom:38px;z-index:4;display:flex;gap:9px;}
.hero .dots i{
  width:26px;height:3px;border-radius:2px;background:rgba(255,255,255,.32);
  cursor:pointer;transition:.25s;
}
.hero .dots i.on{background:var(--amber);width:40px;}

/* ---------------- 数据条 ---------------- */
.stats{background:var(--ink-2);position:relative;z-index:5;}
.stats .row{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:30px 24px;text-align:center;border-right:1px solid rgba(255,255,255,.08);}
.stat:last-child{border-right:none;}
.stat b{display:block;font-size:34px;font-weight:700;color:#fff;letter-spacing:-.5px;line-height:1.15;}
.stat b i{font-style:normal;font-size:16px;color:var(--amber);margin-left:2px;}
.stat span{display:block;margin-top:6px;font-size:13px;color:#8FA6B1;letter-spacing:.05em;}

/* ---------------- 卡片网格 ---------------- */
.grid{display:grid;gap:22px;}
.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:var(--radius-lg);
  padding:30px 26px;transition:.22s;
}
.card:hover{border-color:#C9DCDF;box-shadow:var(--shadow);transform:translateY(-3px);}
.card .ic{
  width:46px;height:46px;border-radius:11px;background:var(--teal-100);color:var(--teal);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.card h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:9px;}
.card p{font-size:14px;color:var(--gray);line-height:1.8;}

/* 服务卡（带图） */
.scard{
  border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:#fff;
  transition:.22s;display:flex;flex-direction:column;
}
.scard:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:#C9DCDF;}
.scard .ph{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-soft2);}
.scard .ph img{width:100%;height:100%;object-fit:cover;transition:.5s;}
.scard:hover .ph img{transform:scale(1.05);}
.scard .ph .tag{
  position:absolute;left:14px;top:14px;background:rgba(13,31,43,.78);color:#fff;
  font-size:11.5px;padding:4px 10px;border-radius:5px;letter-spacing:.05em;
}
.scard .bd{padding:22px 22px 24px;flex:1;display:flex;flex-direction:column;}
.scard h3{font-size:16.5px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.scard p{font-size:13.5px;color:var(--gray);line-height:1.8;flex:1;}
.scard .more{
  margin-top:16px;font-size:13px;color:var(--teal);font-weight:600;
  display:inline-flex;align-items:center;gap:5px;
}

/* ---------------- 特色双栏 ---------------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split .txt .kicker{margin-bottom:10px;}
.split .txt h2{font-size:28px;font-weight:700;color:var(--ink);line-height:1.35;letter-spacing:-.3px;}
.split .txt p{margin-top:16px;color:var(--gray);font-size:14.5px;line-height:1.9;}
.split .pic{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);}
.split .pic img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.ticks{margin-top:22px;display:grid;gap:12px;}
.ticks li{display:flex;gap:11px;align-items:flex-start;font-size:14px;color:var(--ink-3);}
.ticks svg{flex:none;margin-top:4px;color:var(--teal);}

/* ---------------- 优势大卡 ---------------- */
.adv{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.adv > div{
  display:flex;gap:18px;padding:26px;border:1px solid var(--line);border-radius:var(--radius-lg);
  background:#fff;transition:.22s;
}
.adv > div:hover{border-color:#C9DCDF;box-shadow:var(--shadow);}
.adv .n{
  flex:none;min-width:42px;height:42px;padding:0 12px;border-radius:10px;background:var(--ink);color:var(--amber);
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  white-space:nowrap;letter-spacing:.02em;
}
.adv h4{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:7px;}
.adv p{font-size:13.5px;color:var(--gray);line-height:1.8;}

/* ---------------- 业态 ---------------- */
.biz{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.biz .it{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 20px;text-align:center;transition:.22s;
}
.biz .it:hover{border-color:var(--teal);box-shadow:var(--shadow);transform:translateY(-3px);}
.biz .it .ic{
  width:52px;height:52px;margin:0 auto 15px;border-radius:14px;background:var(--teal-50);
  color:var(--teal);display:flex;align-items:center;justify-content:center;
}
.biz .it h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:7px;}
.biz .it p{font-size:12.5px;color:var(--gray-2);line-height:1.7;}

/* ---------------- 项目卡 ---------------- */
.pcard{border-radius:var(--radius-lg);overflow:hidden;position:relative;background:var(--ink);}
.pcard img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:.5s;}
.pcard:hover img{transform:scale(1.05);opacity:.9;}
.pcard .ov{
  position:absolute;left:0;right:0;bottom:0;padding:22px;
  background:linear-gradient(0deg,rgba(9,22,30,.92) 0%,rgba(9,22,30,.55) 55%,transparent 100%);
  color:#fff;
}
.pcard .ov span{
  display:inline-block;font-size:11px;color:#7FD3DA;letter-spacing:.1em;
  border:1px solid rgba(127,211,218,.5);border-radius:4px;padding:2px 8px;margin-bottom:9px;
}
.pcard .ov h4{font-size:16px;font-weight:700;}
.pcard .ov p{font-size:12.5px;color:#B4C6D0;margin-top:5px;}

/* ---------------- 荣誉 ---------------- */
.honor{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.honor .it{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:14px;text-align:center;transition:.22s;
}
.honor .it:hover{box-shadow:var(--shadow);}
.honor .it img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:8px;background:var(--bg-soft);}
.honor .it p{font-size:13px;color:var(--ink-3);margin-top:12px;font-weight:600;}

/* ---------------- 流程 ---------------- */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;}
.steps::before{
  content:"";position:absolute;left:9%;right:9%;top:26px;height:1px;
  background:repeating-linear-gradient(90deg,var(--line) 0 6px,transparent 6px 12px);
}
.step{text-align:center;position:relative;padding:0 14px;}
.step .dot{
  width:52px;height:52px;border-radius:50%;background:#fff;border:2px solid var(--teal);
  color:var(--teal);font-size:17px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;position:relative;z-index:2;
}
.step h4{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.step p{font-size:12.5px;color:var(--gray-2);line-height:1.7;}

/* ---------------- 表格 ---------------- */
.tbl{width:100%;border-collapse:collapse;font-size:14px;background:#fff;
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);}
.tbl th{
  background:var(--ink);color:#fff;font-weight:600;font-size:13.5px;
  padding:13px 16px;text-align:left;letter-spacing:.03em;
}
.tbl td{padding:13px 16px;border-bottom:1px solid var(--line-2);color:var(--ink-3);}
.tbl tr:last-child td{border-bottom:none;}
.tbl tbody tr:hover{background:var(--teal-50);}

/* ---------------- 联系 ---------------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:46px;align-items:start;}
.cinfo{display:grid;gap:16px;}
.cinfo .it{display:flex;gap:15px;align-items:flex-start;}
.cinfo .ic{
  flex:none;width:42px;height:42px;border-radius:11px;background:var(--teal-100);color:var(--teal);
  display:flex;align-items:center;justify-content:center;
}
.cinfo .lb{font-size:12.5px;color:var(--gray-2);margin-bottom:2px;}
.cinfo .vl{font-size:15.5px;color:var(--ink);font-weight:600;}
.cinfo .vl.grp{font-size:15px;line-height:1.9;}

.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow-sm);}
.form h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.form .ftip{font-size:13px;color:var(--gray-2);margin-bottom:22px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:var(--ink-3);font-weight:600;margin-bottom:7px;}
.field label i{color:#D9534F;font-style:normal;}
.field input,.field select,.field textarea{
  width:100%;font-family:inherit;font-size:14px;color:var(--ink-2);
  padding:11px 14px;border:1px solid var(--line);border-radius:8px;background:#FCFDFD;
  transition:.18s;outline:none;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(14,124,134,.1);
}
.field textarea{resize:vertical;min-height:104px;}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.form .btn{width:100%;justify-content:center;margin-top:6px;}
.form-note{font-size:12px;color:var(--gray-2);margin-top:12px;text-align:center;}
.form-note.ok{color:var(--teal);font-weight:600;}
.form-note.err{color:#C0392B;font-weight:600;}
.hp-field{position:absolute!important;left:-9999px!important;top:auto!important;width:1px!important;height:1px!important;overflow:hidden!important;}
.form .btn[disabled]{opacity:.6;cursor:not-allowed;}

/* ---------------- CTA 带 ---------------- */
.cta{
  background:var(--ink);color:#fff;position:relative;overflow:hidden;
}
.cta .bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.18;}
.cta::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(13,31,43,.95),rgba(14,124,134,.55));
}
.cta .wrap{position:relative;z-index:2;padding:56px 24px;display:flex;
  align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;}
.cta h3{font-size:25px;font-weight:700;letter-spacing:-.3px;}
.cta p{margin-top:8px;color:#A9BCC6;font-size:14px;}
.cta .acts{display:flex;gap:13px;flex-wrap:wrap;}

/* ---------------- 页脚 ---------------- */
footer{background:#091620;color:#8FA6B1;font-size:13.5px;padding:56px 0 0;}
.ftop{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;}
.ftop .brandbox img{height:40px;background:#fff;padding:6px 10px;border-radius:6px;width:auto;}
.ftop .brandbox p{margin-top:16px;line-height:1.9;color:#7C909B;font-size:13px;max-width:290px;}
.ftop h5{color:#fff;font-size:14.5px;font-weight:600;margin-bottom:16px;letter-spacing:.03em;}
.ftop ul{display:grid;gap:9px;}
.ftop ul a{color:#8FA6B1;transition:.16s;font-size:13.5px;}
.ftop ul a:hover{color:#67C6CE;}
.fbot{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  color:#6B818C;font-size:12.5px;
}
.fbot a:hover{color:#67C6CE;}

/* ---------------- 浮动侧栏 ---------------- */
.side{
  position:fixed;right:18px;bottom:78px;z-index:70;display:grid;gap:10px;
}
.side a,.side button{
  width:50px;height:50px;border-radius:12px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow);color:var(--teal);display:flex;align-items:center;justify-content:center;
  transition:.18s;
}
.side a:hover,.side button:hover{background:var(--teal);color:#fff;border-color:var(--teal);}
.side .qq{background:var(--teal);color:#fff;border-color:var(--teal);}

/* ---------------- 移动端底部操作条 ---------------- */
.mbar{display:none;}

/* ---------------- 进场动画 ---------------- */
.rise{transition:opacity .7s ease,transform .7s ease;}
/* 仅在 JS 正常执行（html.js）时才隐藏入场元素，脚本失效时内容照常显示 */
.js .rise{opacity:0;transform:translateY(22px);}
.js .rise.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js .rise{opacity:1;transform:none;transition:none;}
  .hero-slide{transition:none;}
  .btn-p:hover,.card:hover,.scard:hover,.biz .it:hover{transform:none;}
}

/* ---------------- 响应式 ---------------- */
@media (max-width:1080px){
  .adv{grid-template-columns:1fr;}
  .steps{grid-template-columns:repeat(3,1fr);row-gap:30px;}
  .steps::before{display:none;}
  .ftop{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:900px){
  .menu{display:none;}
  .menu.open{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    position:absolute;top:var(--navh);left:0;right:0;background:#fff;
    padding:14px 18px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);
  }
  .menu.open a{padding:12px 12px;border-radius:8px;font-size:15px;}
  .menu a.on::after{display:none;}
  .menu a.on{background:var(--teal-50);}
  .burger{display:flex;}
  .nav-cta{display:none;}
  .g3,.g4,.biz,.honor{grid-template-columns:repeat(2,1fr);}
  .split,.contact-grid,.g2{grid-template-columns:1fr;gap:34px;}
  .stats .row{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:none;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid rgba(255,255,255,.08);}
  .hero h1{font-size:34px;}
  .hero{min-height:420px;}
  .sec{padding:56px 0;}
  h2.t{font-size:25px;}
  .topbar .tl span:nth-child(2){display:none;}
}
@media (max-width:620px){
  .wrap{padding:0 18px;}
  .g3,.g4,.biz,.honor{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;row-gap:24px;}
  .steps .step{display:flex;gap:16px;text-align:left;align-items:flex-start;padding:0;}
  .step .dot{margin:0;flex:none;}
  .hero h1{font-size:28px;}
  .hero{min-height:370px;}
  .hero .wrap{padding-top:40px;padding-bottom:48px;}
  .hero .lead{font-size:14.5px;}
  .stats .row{grid-template-columns:1fr 1fr;}
  .stat b{font-size:26px;}
  .topbar{display:none;}
  :root{--navh:64px;}
  .brand img{height:38px;}
  .phero h1{font-size:24px;}
  .cta .wrap{padding:40px 18px;}
  .cta h3{font-size:20px;}
  .side{display:none;}
  .f2{grid-template-columns:1fr;}
  .ftop{grid-template-columns:1fr;}
  /* 底部操作条：小屏常驻，给页面底部留出它占的高度 */
  .mbar{
    display:flex;position:fixed;left:0;right:0;bottom:0;z-index:90;
    background:#fff;border-top:1px solid var(--line);
    box-shadow:0 -6px 20px rgba(13,31,43,.1);
    padding-bottom:env(safe-area-inset-bottom);
  }
  .mbar a{
    flex:1;display:flex;align-items:center;justify-content:center;gap:8px;
    height:52px;font-size:15px;font-weight:600;
  }
  .mbar a.call{color:var(--teal);border-right:1px solid var(--line);}
  .mbar a.msg{background:var(--teal);color:#fff;}
  body{padding-bottom:52px;}
}