/* ==========================================================================
   镀锌冷凝管 · 企业官网模板
   设计基调：深钢蓝 + 锌银灰 + 铜橙点缀，工业制造感
   说明：所有颜色、间距由 :root 变量控制，改品牌色只需改这里
   ========================================================================== */

:root{
  --ink:#0A1C2B;          /* 主深色 */
  --ink-2:#13303F;        /* 次深色 */
  --ink-3:#1E4055;
  --steel:#7A8C9B;        /* 钢灰 */
  --steel-2:#A9B7C2;
  --line:#E3E9EF;
  --line-2:#EEF2F6;
  --bg:#FFFFFF;
  --bg-soft:#F4F7FA;
  --bg-deep:#08161F;

  --acc:#C2612A;          /* 铜橙 */
  --acc-2:#E09B4C;
  --acc-soft:#FBEFE5;

  --ok:#1F7A5C;

  --radius:10px;
  --radius-lg:16px;
  --shadow-sm:0 1px 2px rgba(10,28,43,.06),0 2px 8px rgba(10,28,43,.05);
  --shadow:0 8px 30px rgba(10,28,43,.09);
  --shadow-lg:0 20px 60px rgba(10,28,43,.14);

  --wrap:1200px;
  --gutter:24px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;overflow-x:clip}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.75;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:clip;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font:inherit;color:inherit}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 通用排版 ---------- */
.h1{font-size:clamp(30px,4.4vw,54px);line-height:1.18;letter-spacing:-.02em;font-weight:700}
.h2{font-size:clamp(24px,2.9vw,36px);line-height:1.28;letter-spacing:-.015em;font-weight:700}
.h3{font-size:clamp(18px,1.7vw,22px);line-height:1.45;font-weight:650}
.lead{font-size:clamp(16px,1.35vw,18px);line-height:1.85;color:#40566A}
.muted{color:#6B8093}
.small{font-size:14px}

.kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:650;letter-spacing:.14em;text-transform:uppercase;
  color:var(--acc);
}
.kicker::before{content:"";width:26px;height:2px;background:var(--acc);border-radius:2px}
.kicker--light{color:var(--acc-2)}
.kicker--light::before{background:var(--acc-2)}

.sec{padding:clamp(56px,7vw,104px) 0}
.sec--soft{background:var(--bg-soft)}
.sec--ink{background:var(--ink);color:#E8EEF3}
.sec--ink .lead{color:#A9BCCA}
.sec-head{max-width:760px;margin-bottom:clamp(30px,4vw,52px)}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head .h2{margin:14px 0 14px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:8px;font-weight:650;font-size:15px;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px)}
.btn--acc{background:var(--acc);color:#fff;box-shadow:0 6px 18px rgba(194,97,42,.28)}
.btn--acc:hover{background:#AE5523;box-shadow:0 10px 26px rgba(194,97,42,.34)}
.btn--ink{background:var(--ink);color:#fff}
.btn--ink:hover{background:var(--ink-2)}
.btn--ghost{border:1.5px solid var(--line);color:var(--ink);background:#fff}
.btn--ghost:hover{border-color:var(--steel-2);background:#FBFDFE}
.btn--ghost-l{border:1.5px solid rgba(255,255,255,.26);color:#fff}
.btn--ghost-l:hover{border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.07)}
.btn--sm{padding:9px 18px;font-size:14px}
.btn svg{width:16px;height:16px;flex:0 0 auto}

.link-arrow{
  display:inline-flex;align-items:center;gap:7px;font-weight:650;font-size:15px;color:var(--acc);
}
.link-arrow svg{width:15px;height:15px;transition:transform .18s ease}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- 顶栏 ---------- */
.topbar{
  background:var(--bg-deep);color:#93A6B4;font-size:13px;
  border-bottom:1px solid rgba(255,255,255,.07);
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:40px}
.topbar-list{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.topbar-item{display:inline-flex;align-items:center;gap:7px}
.topbar-item svg{width:14px;height:14px;opacity:.7}
.topbar-item a:hover{color:#fff}
.topbar-right{display:flex;align-items:center;gap:18px}
.topbar-note{color:#6E8494}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.nav.is-stuck{box-shadow:0 6px 24px rgba(10,28,43,.08)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(145deg,var(--ink-2),var(--ink));
  display:grid;place-items:center;color:#fff;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
}
.brand-mark svg{width:22px;height:22px}
.brand-txt{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-weight:750;font-size:17px;letter-spacing:.01em}
.brand-sub{font-size:11.5px;color:var(--steel);letter-spacing:.1em;text-transform:uppercase}

.menu{display:flex;align-items:center;gap:4px}
.menu>li>a{
  display:block;padding:10px 14px;font-size:15px;font-weight:600;color:#2C4356;
  border-radius:7px;transition:color .16s,background .16s;
}
.menu>li>a:hover{color:var(--ink);background:var(--bg-soft)}
.menu>li>a.is-active{color:var(--acc)}
.menu>li>a.is-active::after{
  content:"";display:block;height:2px;background:var(--acc);border-radius:2px;margin-top:-3px;
}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-tel{display:flex;flex-direction:column;line-height:1.25;text-align:right}
.nav-tel b{font-size:16px;letter-spacing:.01em}
.nav-tel span{font-size:11.5px;color:var(--steel)}

.burger{display:none;width:42px;height:42px;border-radius:8px;border:1px solid var(--line);place-items:center}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
}
.burger span::before{top:-6px}
.burger span::after{top:6px}

/* ---------- HERO ---------- */
.hero{position:relative;overflow:hidden;background:var(--ink);color:#fff}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 480px at 78% 18%,rgba(194,97,42,.20),transparent 62%),
    radial-gradient(700px 420px at 12% 88%,rgba(56,120,150,.22),transparent 66%);
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.30;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.hero .wrap{position:relative;z-index:2}
.hero-inner{
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,64px);
  align-items:center;padding:clamp(52px,7vw,96px) 0 clamp(48px,6vw,84px);
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:10px;padding:7px 15px 7px 11px;
  border:1px solid rgba(255,255,255,.22);border-radius:999px;
  font-size:13px;font-weight:600;color:#D9E4EC;letter-spacing:.03em;
  background:rgba(255,255,255,.06);
}
.hero-eyebrow i{width:7px;height:7px;border-radius:50%;background:#4CC38A;box-shadow:0 0 0 4px rgba(76,195,138,.18)}
.hero h1{margin:20px 0 18px;font-size:clamp(30px,4.6vw,56px);line-height:1.16;letter-spacing:-.025em;font-weight:750}
.hero h1 em{font-style:normal;color:var(--acc-2)}
.hero p{font-size:clamp(15px,1.35vw,18px);line-height:1.85;color:#B6C7D4;max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:30px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 28px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14)}
.hero-meta div{display:flex;align-items:center;gap:8px;font-size:13.5px;color:#93A9B8}
.hero-meta svg{width:15px;height:15px;color:var(--acc-2)}

/* Hero 右侧视觉（占位图框，替换为实拍图即可） */
.hero-visual{position:relative}
.hero-shot{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);aspect-ratio:4/3.25;
  background:
    linear-gradient(135deg,#22394a 0%,#162b39 42%,#0f2130 100%);
  border:1px solid rgba(255,255,255,.10);
  display:grid;place-items:center;
}
.hero-shot img{width:100%;height:100%;object-fit:cover}
.hero-shot .ph-label{color:#8FA6B6}
.hero-badge{
  position:absolute;right:18px;bottom:18px;background:#fff;color:var(--ink);
  border-radius:12px;padding:13px 16px;box-shadow:var(--shadow);
  display:flex;align-items:center;gap:12px;
}
.hero-badge b{font-size:22px;letter-spacing:-.02em;line-height:1}
.hero-badge span{display:block;font-size:12px;color:var(--steel);margin-top:4px}
.hero-badge .ico{
  width:38px;height:38px;border-radius:9px;background:var(--acc-soft);color:var(--acc);
  display:grid;place-items:center;flex:0 0 auto;
}
.hero-badge svg{width:19px;height:19px}

/* ---------- 数据条 ---------- */
.stats{background:var(--bg-soft);border-bottom:1px solid var(--line)}
.stats-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.stat{background:#fff;padding:clamp(22px,2.6vw,34px) clamp(16px,2vw,26px)}
.stat b{display:block;font-size:clamp(26px,3.1vw,38px);line-height:1.1;letter-spacing:-.03em;font-weight:750}
.stat b i{font-style:normal;font-size:.52em;font-weight:650;color:var(--steel);margin-left:3px}
.stat span{display:block;margin-top:8px;font-size:14px;color:#5D7385}

/* ---------- 产品卡 ---------- */
.grid{display:grid;gap:clamp(16px,2vw,24px)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#D2DDE6}
.card-media{
  aspect-ratio:4/3;flex:0 0 auto;background:
    repeating-linear-gradient(115deg,#EDF1F5 0 2px,#F7F9FB 2px 22px);
  position:relative;display:grid;place-items:center;overflow:hidden;
  border-bottom:1px solid var(--line-2);
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.card:hover .card-media img{transform:scale(1.035)}
.card-media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 62%,rgba(10,28,43,.05));
}
.card-tag{
  position:absolute;top:12px;left:12px;z-index:2;
  background:rgba(255,255,255,.94);color:var(--ink);
  font-size:12px;font-weight:650;padding:5px 11px;border-radius:6px;
  letter-spacing:.02em;
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-size:17px;font-weight:700;line-height:1.45}
.card-body p{margin-top:9px;font-size:14px;line-height:1.75;color:#63798B}
.card-specs{
  margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);
  display:flex;flex-wrap:wrap;gap:6px 8px;
}
.chip{
  font-size:12px;font-weight:600;color:#3E5A6E;background:var(--bg-soft);
  border:1px solid var(--line);border-radius:5px;padding:3px 8px;
  font-variant-numeric:tabular-nums;
}
.card-foot{margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between}

/* ---------- 图片占位 ---------- */
.ph{
  width:100%;height:100%;display:grid;place-items:center;align-content:center;gap:10px;
  color:#9AAEBE;font-size:13px;font-weight:600;letter-spacing:.06em;
  background:
    linear-gradient(135deg,#E9EEF3,#F6F8FA 55%,#E4EBF1);
  position:relative;
}
.ph svg{width:34px;height:34px;opacity:.45}
.ph::before{
  content:"";position:absolute;inset:10px;border:1px dashed #C9D6E0;border-radius:8px;
}
.ph--dark{color:#7E96A7;background:linear-gradient(135deg,#1B3242,#122634)}

/* ---------- 图文分栏 ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,4.4vw,64px);align-items:center;
}
.split--rev .split-media{order:2}
.split-media{
  border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  aspect-ratio:5/4;background:#E9EEF3;
}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-body .h2{margin:14px 0 16px}
.split-body p+p{margin-top:14px}
.split-points{margin-top:26px;display:grid;gap:14px}
.split-points li{display:flex;gap:13px;align-items:flex-start}
.split-points .tick{
  width:24px;height:24px;border-radius:50%;background:var(--acc-soft);color:var(--acc);
  display:grid;place-items:center;flex:0 0 auto;margin-top:2px;
}
.split-points svg{width:13px;height:13px}
.split-points b{display:block;font-size:15.5px;font-weight:650}
.split-points span{display:block;font-size:14px;color:#63798B;line-height:1.7;margin-top:2px}

/* ---------- 参数表 ---------- */
.table-wrap{
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;
}
.table-scroll{overflow-x:auto}
table.spec{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
table.spec caption{
  caption-side:top;text-align:left;padding:16px 20px;font-weight:650;font-size:14px;
  background:var(--bg-soft);border-bottom:1px solid var(--line);color:#3E5A6E;
}
table.spec th,table.spec td{padding:12px 18px;text-align:left;border-bottom:1px solid var(--line-2)}
table.spec thead th{
  background:#FBFCFD;font-size:13px;font-weight:700;color:#3E5A6E;
  letter-spacing:.03em;white-space:nowrap;
}
table.spec tbody tr:last-child th,table.spec tbody tr:last-child td{border-bottom:0}
table.spec tbody th{
  width:36%;font-weight:600;color:#20374A;background:#FCFDFE;
}
table.spec td{color:#4B6274;font-variant-numeric:tabular-nums}
table.spec tbody tr:hover td{background:#FBFDFE}

/* ---------- 流程步骤 ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:step}
.flow-item{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px 24px;
}
.flow-item::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--mono);font-size:12px;font-weight:700;color:var(--acc);
  letter-spacing:.08em;
}
.flow-item h4{margin:10px 0 7px;font-size:15.5px;font-weight:700}
.flow-item p{font-size:13.5px;line-height:1.7;color:#6B8093}
.flow-item::after{
  content:"";position:absolute;top:50%;right:-14px;width:14px;height:1px;
  background:var(--line);display:block;
}
.flow-item:last-child::after{display:none}

/* ---------- 优势卡 ---------- */
.feat{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(22px,2.4vw,30px);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.feat:hover{border-color:#D2DDE6;box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.feat-ico{
  width:46px;height:46px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--ink-2),var(--ink));color:#fff;margin-bottom:18px;
}
.feat-ico svg{width:21px;height:21px}
.feat h3{font-size:16.5px;font-weight:700}
.feat p{margin-top:9px;font-size:14px;line-height:1.8;color:#63798B}

/* ---------- 应用领域 ---------- */
.app{
  position:relative;border-radius:var(--radius);overflow:hidden;min-height:250px;
  display:flex;align-items:flex-end;color:#fff;
  background:linear-gradient(160deg,#16303F,#0A1C2B);
  border:1px solid rgba(255,255,255,.06);
}
.app img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.42}
.app>.ph{position:absolute;inset:0;opacity:.62}
.app-body{position:relative;z-index:2;padding:26px 24px;width:100%;
  background:linear-gradient(180deg,transparent,rgba(6,18,26,.86) 62%)}
.app-body h3{font-size:17.5px;font-weight:700}
.app-body p{margin-top:7px;font-size:14px;line-height:1.72;color:#B4C6D3;min-height:3.44em}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;background:var(--ink);color:#fff;border-radius:var(--radius-lg);
  padding:clamp(32px,4.4vw,58px);
  display:grid;grid-template-columns:1.35fr auto;gap:30px;align-items:center;
}
.cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(620px 320px at 88% 0%,rgba(194,97,42,.32),transparent 62%);
}
.cta>*{position:relative;z-index:2}
.cta .h2{margin-bottom:12px}
.cta p{color:#AFC1CE;font-size:15.5px;line-height:1.8;max-width:44em}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 面包屑 ---------- */
.crumb{background:var(--bg-soft);border-bottom:1px solid var(--line);font-size:13.5px;color:#6B8093}
.crumb .wrap{display:flex;align-items:center;gap:9px;min-height:48px;flex-wrap:wrap}
.crumb a:hover{color:var(--acc)}
.crumb svg{width:13px;height:13px;opacity:.5}
.crumb b{color:#2C4356;font-weight:600}

/* ---------- 页头 ---------- */
.page-head{background:var(--ink);color:#fff;position:relative;overflow:hidden}
.page-head::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 380px at 82% 10%,rgba(194,97,42,.20),transparent 60%);
}
.page-head::after{
  content:"";position:absolute;inset:0;opacity:.24;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:58px 58px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),transparent 82%);
}
.page-head .wrap{position:relative;z-index:2;padding:clamp(40px,5.4vw,72px) var(--gutter)}
.page-head h1{margin:12px 0 12px;font-size:clamp(26px,3.6vw,42px);line-height:1.22;letter-spacing:-.02em;font-weight:750}
.page-head p{color:#AFC1CE;font-size:15.5px;line-height:1.8;max-width:52em}

/* ---------- 优势条 / 信任条 ---------- */
.trust{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:clamp(26px,3vw,36px) 0}
.trust-item{display:flex;gap:13px;align-items:flex-start}
.trust-ico{
  width:38px;height:38px;border-radius:9px;background:#fff;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--acc);flex:0 0 auto;
}
.trust-ico svg{width:18px;height:18px}
.trust-item b{display:block;font-size:14.5px;font-weight:700}
.trust-item span{display:block;font-size:13px;color:#6B8093;margin-top:2px;line-height:1.6}

/* ---------- 表单 ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:650;color:#2C4356}
.field label i{color:var(--acc);font-style:normal}
.field input,.field textarea,.field select{
  border:1px solid var(--line);border-radius:8px;padding:12px 14px;font-size:14.5px;
  background:#fff;transition:border-color .16s,box-shadow .16s;width:100%;
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:0;border-color:var(--acc);box-shadow:0 0 0 3px rgba(194,97,42,.12);
}
.field textarea{resize:vertical;min-height:110px}
.form-note{font-size:12.5px;color:#7A8C9B;line-height:1.7}

/* ---------- 联系卡 ---------- */
.contact-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;display:flex;gap:15px;align-items:flex-start;
}
.contact-card .ico{
  width:42px;height:42px;border-radius:10px;background:var(--acc-soft);color:var(--acc);
  display:grid;place-items:center;flex:0 0 auto;
}
.contact-card svg{width:19px;height:19px}
.contact-card b{display:block;font-size:14px;font-weight:650;color:#3E5A6E}
.contact-card strong{display:block;font-size:16.5px;font-weight:700;margin-top:3px;line-height:1.5}
.contact-card span{display:block;font-size:13px;color:#7A8C9B;margin-top:3px;line-height:1.65}

/* ---------- 列表 / 文章 ---------- */
.news-item{
  display:grid;grid-template-columns:190px 1fr;gap:24px;
  padding:24px 0;border-bottom:1px solid var(--line);
  transition:opacity .18s ease;
}
.news-item:first-child{padding-top:0}
.news-item:last-child{border-bottom:0;padding-bottom:0}
.news-item:hover h3{color:var(--acc)}
.news-thumb{
  aspect-ratio:16/10;border-radius:8px;overflow:hidden;background:var(--bg-soft);
  border:1px solid var(--line-2);
}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-meta{display:flex;align-items:center;gap:14px;font-size:12.5px;color:#7A8C9B;margin-bottom:8px}
.news-meta .tag{color:var(--acc);font-weight:650;background:var(--acc-soft);padding:2px 9px;border-radius:5px}
.news-item h3{font-size:17px;font-weight:700;line-height:1.5;transition:color .16s}
.news-item p{margin-top:7px;font-size:14px;color:#63798B;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 页脚 ---------- */
.footer{background:var(--bg-deep);color:#8FA3B2;font-size:14px;padding-top:clamp(44px,5vw,64px)}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:clamp(24px,3.4vw,48px);
  padding-bottom:44px;
}
.footer .brand-name{color:#fff}
.footer .brand-sub{color:#6E8494}
.footer-about{margin-top:16px;line-height:1.85;font-size:13.5px;color:#7E93A2;max-width:30em}
.footer h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.02em}
.footer-links li+li{margin-top:10px}
.footer-links a{font-size:13.5px;color:#8FA3B2;transition:color .16s}
.footer-links a:hover{color:#fff}
.footer-contact li{display:flex;gap:10px;font-size:13.5px;line-height:1.7}
.footer-contact li+li{margin-top:12px}
.footer-contact svg{width:15px;height:15px;flex:0 0 auto;margin-top:4px;opacity:.65}
.footer-contact a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:#64798A;
}
.footer-bottom nav{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom a:hover{color:#fff}

/* ---------- 浮动联系 ---------- */
.float{
  position:fixed;right:18px;bottom:20px;z-index:70;display:flex;flex-direction:column;gap:10px;
}
.float a{
  width:46px;height:46px;border-radius:12px;display:grid;place-items:center;
  background:#fff;color:var(--ink);box-shadow:var(--shadow);border:1px solid var(--line);
  transition:transform .16s ease,background .16s ease,color .16s ease;
}
.float a:hover{transform:translateY(-2px);background:var(--acc);color:#fff;border-color:var(--acc)}
.float svg{width:20px;height:20px}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-visual{max-width:560px}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(3,1fr)}
  .flow-item:nth-child(3)::after{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .topbar-note{display:none}
  .topbar .wrap{gap:10px;min-height:36px;font-size:12.5px}
  .topbar-list{gap:14px}
  .menu{
    display:none;position:absolute;top:100%;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    flex-direction:column;align-items:stretch;padding:10px 16px 18px;gap:2px;
  }
  .menu.is-open{display:flex}
  .menu>li>a{padding:13px 10px;font-size:15.5px;border-radius:8px}
  .menu>li>a.is-active::after{display:none}
  .burger{display:grid}
  .nav .wrap{position:relative;gap:10px;min-height:66px}
  .nav-tel{display:none}
  .nav-cta{gap:8px}
  .nav-cta .btn{padding:8px 14px;font-size:13.5px}
  .brand{gap:9px}
  .brand-mark{width:36px;height:36px;border-radius:8px}
  .brand-mark svg{width:20px;height:20px}
  .brand-name{font-size:15px}
  .brand-sub{font-size:10px;letter-spacing:.06em}
  .grid--3,.grid--4{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:30px}
  .split--rev .split-media{order:0}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-item::after{display:none}
}
@media (max-width:640px){
  :root{--gutter:18px}
  .hero-badge{left:auto;right:14px;bottom:14px;padding:11px 14px}
  .hero-badge b{font-size:18px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .news-item{grid-template-columns:1fr;gap:14px}
  .news-thumb{aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta{padding:26px 22px}
  .flow{grid-template-columns:1fr}
  .float{right:12px;bottom:14px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* 打印 */
@media print{
  .nav,.topbar,.float,.cta,.footer{display:none}
  body{color:#000}
}