/* ============================================================
   秦皇岛市金爵科技发展有限公司 - 静态站点统一样式
   主题：科技蓝 + 品牌红 | 响应式：电脑 / 平板 / 手机
   ============================================================ */

/* ---------- 基础重置 ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  font-size:15px;
  line-height:1.7;
  color:#2b3445;
  background:#f4f7fb;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color .25s}
a:hover{color:#e60012}
img{max-width:100%;display:block;border:0}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}

/* ---------- 主题变量 ---------- */
:root{
  --c-primary:#e60012;          /* 品牌红 */
  --c-dark:#0d1b2a;             /* 深科技蓝 */
  --c-blue:#1565d8;             /* 科技蓝 */
  --c-blue-light:#e8f1ff;
  --c-text:#2b3445;
  --c-muted:#6b7689;
  --c-line:#e3e8f0;
  --c-bg:#f4f7fb;
  --radius:14px;
  --shadow:0 10px 30px rgba(13,27,42,.08);
  --shadow-hover:0 18px 40px rgba(13,27,42,.14);
  --maxw:1200px;
}

/* ---------- 通用容器 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section--alt{background:#fff}
.section--dark{background:var(--c-dark);color:#dfe6f0}

.section-head{text-align:center;max-width:760px;margin:0 auto 50px}
.section-head h2{
  font-size:clamp(26px,3.4vw,38px);
  color:var(--c-dark);
  font-weight:800;
  letter-spacing:1px;
  margin-bottom:14px;
}
.section--dark .section-head h2{color:#fff}
.section-head .bar{
  width:60px;height:4px;background:var(--c-primary);border-radius:2px;margin:0 auto 18px;
}
.section-head p{color:var(--c-muted);font-size:16px}
.section--dark .section-head p{color:#9fb0c8}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:72px;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .3s,background .3s;
}
.site-header.scrolled{box-shadow:0 4px 20px rgba(13,27,42,.08)}
.nav{max-width:var(--maxw);margin:0 auto;padding:0 24px;height:100%;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;/*gap:12px*/}
.brand img{height:42px}
.brand .brand-txt b{display:block;font-size:19px;color:var(--c-dark);font-weight:800;letter-spacing:1px;line-height: 1.0;}
.brand .brand-txt span{display:block;font-size:9px;color:var(--c-muted);letter-spacing:.5px;line-height: 1.5;}
.brand .brand-txt-en b{display:block;font-size:14px;color:var(--c-dark);font-weight:800;/*letter-spacing:1px*/line-height: 1.0;}
.brand .brand-txt-en span{display:block;font-size:9px;color:var(--c-muted);letter-spacing:.5px}

.main-menu{display:flex;align-items:center;gap:6px}
.main-menu a{
  position:relative;padding:10px 18px;font-size:15px;font-weight:600;color:var(--c-text);border-radius:8px;
}
.main-menu a:hover{color:var(--c-primary);background:#fff5f5}
.main-menu a.active{color:var(--c-primary)}
.main-menu a.active::after{
  content:"";position:absolute;left:18px;right:18px;bottom:2px;height:3px;background:var(--c-primary);border-radius:2px;
}
.nav-cta{
  margin-left:10px;padding:9px 22px;background:var(--c-primary);color:#fff!important;border-radius:24px;font-weight:600;
}
.nav-cta:hover{background:#c4000f;color:#fff!important;transform:translateY(-2px);box-shadow:0 8px 20px rgba(230,0,18,.35)}
.lang-switch{
  margin-left:10px;padding:9px 22px;background:var(--c-blue);color:#fff!important;border-radius:24px;font-weight:600;
}
.lang-switch:hover{background:#0d47a1;color:#fff!important;transform:translateY(-2px);box-shadow:0 8px 20px rgba(21,101,216,.35)}

.nav-toggle{display:none;width:42px;height:42px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.nav-toggle span{width:24px;height:2px;background:var(--c-dark);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  padding:120px 0 60px;overflow:hidden;
  background:linear-gradient(135deg,#0a1626 0%,#11263f 45%,#1a3a5c 100%);
  color:#fff;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    radial-gradient(circle at 20% 30%,rgba(21,101,216,.35),transparent 45%),
    radial-gradient(circle at 80% 20%,rgba(230,0,18,.25),transparent 40%),
    radial-gradient(circle at 60% 80%,rgba(21,101,216,.2),transparent 45%);
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border:1px solid rgba(255,255,255,.25);border-radius:24px;
  font-size:13px;color:#bcd0ea;margin-bottom:24px;background:rgba(255,255,255,.05);
}
.hero-tag .dot{width:8px;height:8px;border-radius:50%;background:#19d07a;box-shadow:0 0 0 4px rgba(25,208,122,.2)}
.hero h1{
  font-size:clamp(32px,5vw,56px);font-weight:900;line-height:1.25;letter-spacing:1px;margin-bottom:24px;
}
.hero h1 .accent{color:#ff5a64}
.hero h1 .accent2{color:#5aa9ff}
.hero .lead{font-size:clamp(16px,1.8vw,20px);color:#c3d4ea;line-height:1.9;max-width:560px;margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 30px;border-radius:30px;font-size:15px;font-weight:700;letter-spacing:.5px;transition:.28s;
}
.btn--primary{background:var(--c-primary);color:#fff;box-shadow:0 10px 26px rgba(230,0,18,.4)}
.btn--primary:hover{background:#ff1a26;color:#fff;transform:translateY(-3px);box-shadow:0 16px 34px rgba(230,0,18,.5)}
.btn--ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn--ghost:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-3px)}

/* Hero 右侧视觉卡 */
.hero-visual{position:relative}
.hero-panel{
  position:relative;border-radius:28px;overflow:hidden;
  background:rgba(255,255,255,.96);padding:20px;
  box-shadow:0 30px 70px rgba(0,0,0,.4);
  animation:floaty 5s ease-in-out infinite;
}
.hero-panel img{width:100%;border-radius:18px}
.hero-badge{
  position:absolute;padding:14px 18px;border-radius:16px;background:rgba(13,27,42,.85);
  backdrop-filter:blur(8px);color:#fff;font-size:13px;box-shadow:0 12px 30px rgba(0,0,0,.35);
}
.hero-badge b{display:block;font-size:22px;color:#ff5a64;font-weight:800;line-height:1}
.hero-badge small{color:#aebfd6;display:block;margin-top:4px}
.hero-badge.b1{top:18px;left:-24px}
.hero-badge.b2{bottom:30px;right:-20px}
.hero-badge.b2 b{color:#5aa9ff}

@keyframes floaty{50%{transform:translateY(-16px)}}

/* ---------- 数据统计条 ---------- */
.stats{background:var(--c-dark);color:#fff;padding:40px 0}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat-item b{display:block;font-size:clamp(30px,4vw,46px);font-weight:900;color:#ff5a64;line-height:1}
.stat-item span{display:block;margin-top:8px;color:#9fb0c8;font-size:14px;letter-spacing:1px}

/* ---------- 业务卡片网格 ---------- */
.grid{display:grid;gap:26px}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--2{grid-template-columns:repeat(2,1fr)}

.feature-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);
  padding:36px 28px;transition:.3s;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;left:0;top:0;height:4px;width:100%;background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .35s;
}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover);border-color:transparent}
.feature-card:hover::before{transform:scaleX(1)}
.feature-card .ico{
  width:60px;height:60px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#e8f1ff,#dbe9ff);color:var(--c-blue);margin-bottom:22px;
}
.feature-card .ico svg{width:30px;height:30px}
.feature-card h3{font-size:20px;color:var(--c-dark);margin-bottom:12px;font-weight:700}
.feature-card p{color:var(--c-muted);font-size:14.5px;line-height:1.8}
.feature-card ul{margin-top:14px}
.feature-card ul li{position:relative;padding-left:20px;margin-bottom:8px;color:var(--c-muted);font-size:14px}
.feature-card ul li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--c-primary)}

/* ---------- 关于简介区 ---------- */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-intro .img-wrap{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3;background:linear-gradient(135deg,#1565d8,#0d1b2a)}
.about-intro .img-wrap img{width:100%;height:100%;object-fit:cover}
.about-intro h2{font-size:clamp(24px,3vw,34px);color:var(--c-dark);font-weight:800;margin-bottom:8px}
.about-intro .sub{color:var(--c-primary);font-weight:700;letter-spacing:1px;margin-bottom:20px;font-size:15px}
.about-intro p{color:var(--c-muted);margin-bottom:16px}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px}
.about-points div{display:flex;gap:12px;align-items:flex-start}
.about-points .pi{flex:none;width:38px;height:38px;border-radius:10px;background:var(--c-blue-light);color:var(--c-blue);display:flex;align-items:center;justify-content:center;font-weight:800}
.about-points b{display:block;color:var(--c-dark);font-size:15px}
.about-points span{font-size:13px;color:var(--c-muted)}

/* ---------- 优势区 ---------- */
.adv-list{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv-item{text-align:center;padding:30px 20px;background:#fff;border-radius:var(--radius);border:1px solid var(--c-line);transition:.3s}
.adv-item:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.adv-item .num{font-size:42px;font-weight:900;color:var(--c-blue-light);line-height:1;margin-bottom:6px}
.adv-item h4{color:var(--c-dark);font-size:17px;margin-bottom:8px}
.adv-item p{color:var(--c-muted);font-size:13.5px;line-height:1.7}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  position:relative;padding:70px 0;color:#fff;text-align:center;overflow:hidden;
  background:linear-gradient(120deg,var(--c-primary) 0%,#b3000f 100%);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.25;
  background-image:radial-gradient(circle at 10% 20%,#fff,transparent 30%),radial-gradient(circle at 90% 80%,#fff,transparent 30%);
}
.cta-band .container{position:relative;z-index:2}
.cta-band h2{font-size:clamp(24px,3vw,36px);font-weight:800;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.9);font-size:16px;margin-bottom:28px}
.cta-band .btn--ghost{background:#fff;color:var(--c-primary);border-color:#fff}
.cta-band .btn--ghost:hover{background:#fff;color:#c4000f}

/* ---------- 客户/合作 ---------- */
.clients{display:flex;flex-wrap:wrap;justify-content:center;gap:16px}
.client-chip{
  padding:18px 26px;background:#fff;border:1px solid var(--c-line);border-radius:12px;
  font-size:15px;color:var(--c-dark);font-weight:600;transition:.3s;min-width:160px;text-align:center;
}
.client-chip:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-4px);box-shadow:var(--shadow)}

/* ---------- 子页通用 Banner ---------- */
.page-banner{
  position:relative;padding:140px 0 70px;color:#fff;text-align:center;overflow:hidden;
  background:linear-gradient(135deg,#0a1626 0%,#11263f 60%,#1a3a5c 100%);
}
.page-banner::before{
  content:"";position:absolute;inset:0;opacity:.4;
  background-image:
    radial-gradient(circle at 15% 40%,rgba(21,101,216,.4),transparent 40%),
    radial-gradient(circle at 85% 30%,rgba(230,0,18,.3),transparent 35%);
}
.page-banner::after{
  content:"";position:absolute;inset:0;opacity:.4;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:44px 44px;
}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{font-size:clamp(28px,4vw,44px);font-weight:900;letter-spacing:2px;margin-bottom:14px}
.page-banner .crumb{color:#9fb0c8;font-size:14px}
.page-banner .crumb a{color:#cfe0f5}
.page-banner .crumb a:hover{color:#fff}
.page-banner .bar{width:60px;height:4px;background:var(--c-primary);border-radius:2px;margin:18px auto 0}

/* ---------- 文章/内容排版 ---------- */
.article{max-width:880px;margin:0 auto;color:var(--c-text);font-size:16px;line-height:2}
.article h3{font-size:22px;color:var(--c-dark);margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--c-primary)}
.article p{margin-bottom:16px;color:#41506a}
.article .lead-p{font-size:17px;color:var(--c-dark);font-weight:600}

/* ---------- 卡片式内容块（关于/服务） ---------- */
.content-row{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.info-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:32px;transition:.3s}
.info-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.info-card .ih{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.info-card .ih .ico{width:48px;height:48px;border-radius:12px;background:var(--c-blue-light);color:var(--c-blue);display:flex;align-items:center;justify-content:center}
.info-card .ih .ico svg{width:26px;height:26px}
.info-card h3{font-size:19px;color:var(--c-dark)}
.info-card p{color:var(--c-muted);font-size:14.5px;line-height:1.9}
.info-card ul{margin-top:12px}
.info-card ul li{position:relative;padding-left:22px;margin-bottom:8px;color:#41506a;font-size:14.5px}
.info-card ul li::before{content:"✓";position:absolute;left:0;color:var(--c-primary);font-weight:800}

/* ---------- 联系页 ---------- */
.contact-wrap{display:grid;/*grid-template-columns:1fr 1fr;*/gap:40px;align-items:start}
.contact-cards{display:grid;gap:18px}
.contact-card{display:flex;gap:18px;align-items:center;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:22px 24px;transition:.3s}
.contact-card:hover{box-shadow:var(--shadow);transform:translateX(6px)}
.contact-card .ico{flex:none;width:54px;height:54px;border-radius:14px;background:linear-gradient(135deg,#e8f1ff,#dbe9ff);color:var(--c-blue);display:flex;align-items:center;justify-content:center}
.contact-card .ico svg{width:26px;height:26px}
.contact-card b{display:block;color:var(--c-dark);font-size:15px;margin-bottom:2px}
.contact-card span{color:var(--c-muted);font-size:14px;word-break:break-all}
.contact-card a:hover{color:var(--c-primary)}

.contact-form{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.contact-form h3{font-size:20px;color:var(--c-dark);margin-bottom:6px}
.contact-form .hint{color:var(--c-muted);font-size:13.5px;margin-bottom:24px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13.5px;color:var(--c-dark);font-weight:600;margin-bottom:8px}
.field label .req{color:var(--c-primary)}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--c-line);border-radius:10px;font-size:14.5px;font-family:inherit;color:var(--c-text);background:#fbfcfe;transition:.25s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--c-blue);background:#fff;box-shadow:0 0 0 3px rgba(21,101,216,.12)}
.field textarea{resize:vertical;min-height:120px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-note{font-size:12.5px;color:var(--c-muted);margin-top:10px;text-align:center}
.form-success{display:none;padding:14px;border-radius:10px;background:#e8f9ef;color:#1a8a4a;font-size:14px;margin-bottom:18px;border:1px solid #bce8cf}
.form-success.show{display:block}

/* ---------- 联系行动卡（替代无效表单） ---------- */
.contact-action{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.contact-action h3{font-size:20px;color:var(--c-dark);margin-bottom:6px}
.contact-action .hint{color:var(--c-muted);font-size:13.5px;margin-bottom:24px}
.action-row{
  display:flex;align-items:center;gap:16px;
  padding:18px 18px;border:1px solid var(--c-line);border-radius:12px;margin-bottom:14px;
  background:#fbfcfe;transition:.25s;
}
.action-row:hover{border-color:var(--c-primary);background:#fff;box-shadow:0 8px 22px rgba(13,27,42,.08);transform:translateX(4px)}
.action-row .ai{flex:none;width:50px;height:50px;border-radius:12px;background:linear-gradient(135deg,#e8f1ff,#dbe9ff);color:var(--c-blue);display:flex;align-items:center;justify-content:center}
.action-row .ai svg{width:26px;height:26px}
.action-row .at{flex:1}
.action-row .at b{display:block;color:var(--c-dark);font-size:15.5px;margin-bottom:3px}
.action-row .at small{color:var(--c-muted);font-size:13px;line-height:1.5;display:block}
.action-row .arrow{flex:none;color:var(--c-primary);font-size:20px;font-weight:700;transition:.25s}
.action-row:hover .arrow{transform:translateX(4px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-dark);color:#9fb0c8;padding:60px 0 0}
.footer-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand img{height:44px;margin-bottom:18px;border-radius:6px}
.footer-brand p{font-size:13.5px;line-height:1.9;color:#8295ad}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:1px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:#9fb0c8;transition:.25s}
.footer-col ul li a:hover{color:#fff;padding-left:4px}
.footer-contact li{font-size:14px;margin-bottom:12px;display:flex;gap:10px;align-items:flex-start}
.footer-contact .fi{color:var(--c-primary);font-weight:800;flex:none}
.footer-bottom{padding:22px 0;text-align:center;font-size:13px;color:#6b7689}
.footer-bottom a{color:#9fb0c8}
.footer-bottom a:hover{color:#fff}
.footer-bottom .icp{margin-top:6px}

/* ---------- 返回顶部 ---------- */
.back-top{
  position:fixed;right:26px;bottom:26px;width:48px;height:48px;border-radius:50%;
  background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(230,0,18,.4);opacity:0;visibility:hidden;transform:translateY(20px);transition:.3s;z-index:900;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:#c4000f;transform:translateY(-4px)}
.back-top svg{width:22px;height:22px}

/* ============================================================
   响应式：平板
   ============================================================ */
@media(max-width:992px){
  :root{--maxw:960px}
  .section{padding:64px 0}
  .hero{min-height:auto;padding:120px 0 60px}
  .hero .container{grid-template-columns:1fr;gap:40px}
  .hero-visual{max-width:420px;margin:0 auto}
  .hero-badge.b1{left:0}
  .hero-badge.b2{right:0}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .adv-list{grid-template-columns:repeat(2,1fr)}
  .about-intro{grid-template-columns:1fr;gap:30px}
  .footer-top{grid-template-columns:1fr 1fr;gap:30px}
  .contact-wrap{grid-template-columns:1fr}
}

/* ============================================================
   响应式：手机
   ============================================================ */
@media(max-width:768px){
  body{font-size:14.5px}
  .container{padding:0 18px}
  .section{padding:54px 0}
  .section-head{margin-bottom:36px}

  /* 移动端导航 */
  .nav-toggle{display:flex}
  .main-menu{
    position:fixed;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;padding:10px 18px 24px;
    box-shadow:0 16px 30px rgba(13,27,42,.14);
    border-bottom:1px solid var(--c-line);
    transform:translateY(-150%);transition:transform .35s;visibility:hidden;
  }
  .main-menu.open{transform:translateY(0);visibility:visible}
  .main-menu a{padding:14px 12px;border-radius:8px;font-size:16px;border-bottom:1px solid #f0f3f8}
  .main-menu a.active::after{display:none}
  .main-menu a.active{background:#fff5f5}
  .nav-cta{margin:14px 0 0;text-align:center}
  .lang-switch{margin:14px 0 0;text-align:center}

  .brand .brand-txt-en b{font-size:12px;line-height: 1.0;}
  .brand .brand-txt b{font-size:14px}
  .brand .brand-txt span{display:none}
  .brand img{height:36px}

  .hero{padding:110px 0 50px;text-align:center}
  .hero-tag{margin:0 auto 20px}
  .hero .lead{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .hero-panel{padding:14px}
  .hero-badge{display:none}

  .grid--4,.grid--3,.grid--2,.content-row,.adv-list{grid-template-columns:1fr}
  .stats .container{grid-template-columns:repeat(2,1fr);gap:30px 16px}
  .about-points{grid-template-columns:1fr}

  .form-row{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:30px;text-align:left}
  .contact-form{padding:24px}

  .page-banner{padding:110px 0 54px}
  .client-chip{min-width:140px}
}

/* ============================================================
   响应式：小屏手机
   ============================================================ */
@media(max-width:380px){
  .hero h1{font-size:26px}
  .section-head h2{font-size:23px}
  .btn{padding:12px 24px;font-size:14px}
}