/* ============ 基础与变量 ============ */
:root{
  --blue:#009870;
  --blue-2:#009870;
  --blue-deep:#013b2e;
  --orange:#005f4e;
  --orange-2:#007a5c;
  --ink:#1b2733;
  --gray:#5b6b7b;
  --line:#e3e9f0;
  --bg-alt:#f4f7fb;
  --white:#fff;
  --radius:14px;
  --shadow:0 10px 30px rgba(0,95,78,.10);
  --shadow-lg:0 20px 50px rgba(0,95,78,.16);
  --max:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);line-height:1.7;background:var(--white);-webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:var(--max);margin:0 auto;padding:0 24px}

/* ===== 内联 SVG 图标 ===== */
.i{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.8;
  stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.i.xs{width:15px;height:15px;vertical-align:-3px;display:inline-block;margin-right:3px;opacity:.85}
.i.lg{width:32px;height:32px;stroke-width:1.6}

/* ============ 顶部条 ============ */
.topbar{background:var(--blue-deep);color:#d2ece0;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar-left{display:flex;gap:22px;flex-wrap:wrap}
.topbar-left a{color:#d2ece0;transition:.2s}
.topbar-left a:hover{color:var(--orange)}
.topbar-right{color:#9fd4c4;letter-spacing:.5px}
.ic{margin-right:4px;opacity:.8}

/* ============ 导航 ============ */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(180%) blur(8px);border-bottom:1px solid var(--line);
  transition:.3s}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:42px;height:42px;border-radius:10px;background:#009870;
  color:#fff;font-weight:800;font-size:22px;display:grid;place-items:center;box-shadow:var(--shadow)}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:19px;letter-spacing:.5px;color:var(--blue-deep)}
.logo-text em{font-style:normal;font-size:12px;color:var(--gray)}

/* ===== 速科德文字版 Logo（KASITE） ===== */
.brand-logo{display:flex;align-items:center;gap:8px}
.brand-logo .bl-mark{position:relative;width:28px;height:28px;flex:0 0 28px}
.brand-logo .bl-mark svg{width:100%;height:100%;display:block}
.brand-logo .bl-mark img{width:100%;height:100%;display:block;border-radius:50%}
.brand-logo .bl-text{display:flex;flex-direction:column;line-height:1.12}
.brand-logo .bl-cn{font-size:15px;font-weight:800;color:#171717;letter-spacing:2px}
.brand-logo .bl-cn i{font-style:normal;color:var(--blue)}
.brand-logo .bl-en{font-size:8px;font-weight:600;color:var(--blue);letter-spacing:2px}
.brand-logo.logo-footer .bl-cn{color:#fff}
.brand-logo.logo-footer .bl-cn i{color:#7cebc4}
.brand-logo.logo-footer .bl-en{color:#7cebc4}
.brand-logo.logo-footer .bl-mark img{box-shadow:0 0 0 2px rgba(255,255,255,.22)}
.nav{display:flex;gap:30px}
.nav a{font-size:15px;font-weight:500;color:var(--ink);position:relative;padding:6px 0;transition:.2s}
.nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--orange);transition:.25s}
.nav a:hover{color:var(--blue-2)}
.nav a:hover::after{width:100%}
.nav-cta{background:var(--orange);color:#fff;padding:10px 18px;border-radius:30px;font-weight:600;font-size:14px;
  display:flex;flex-direction:column;line-height:1.1;align-items:center;transition:.2s;box-shadow:0 6px 16px rgba(0,95,78,.28)}
.nav-cta span{font-size:13px;font-weight:700}
.nav-cta:hover{background:var(--orange-2);transform:translateY(-2px)}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--blue-deep);cursor:pointer}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:70px 0 110px;color:#fff}
.hero-bg{position:absolute;inset:0;z-index:-2;
  background:radial-gradient(1200px 600px at 80% -10%,#00b383 0%,transparent 55%),
             linear-gradient(135deg,var(--blue-deep) 0%,var(--blue) 60%,var(--blue-2) 100%)}
.hero-bg::after{content:"";position:absolute;inset:0;opacity:.12;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:radial-gradient(circle at 70% 30%,#000,transparent 70%);
          mask-image:radial-gradient(circle at 70% 30%,#000,transparent 70%)}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero-tag{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  padding:6px 16px;border-radius:30px;font-size:14px;letter-spacing:1px;margin-bottom:18px}
.hero h1{font-size:clamp(28px,3.7vw,46px);line-height:1.18;font-weight:800;margin-bottom:20px}
.hero h1 span{color:#7cebc4}
.hero-sub{font-size:17px;color:#d8f0e6;max-width:560px;margin-bottom:28px}
.hero-sub strong{color:#fff}
.hero-btns{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:36px}
.btn{display:inline-block;padding:14px 30px;border-radius:30px;font-weight:600;font-size:15px;transition:.25s;cursor:pointer;border:none}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 10px 24px rgba(0,95,78,.32)}
.btn-primary:hover{background:var(--orange-2);transform:translateY(-2px)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--blue-deep)}
.btn-block{width:100%;text-align:center}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:6px}
.hero-stats li{list-style:none;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
  border-radius:12px;padding:14px 10px;text-align:center}
.hero-stats strong{display:block;font-size:24px;color:#fff;font-weight:800}
.hero-stats strong span{font-size:13px;font-weight:600;margin-left:5px;color:#7cebc4}
.hero-stats span{font-size:12px;color:#bfe4d5}
.hero-visual{display:grid;place-items:center}
.hero-visual img{width:100%;max-width:440px;filter:drop-shadow(0 20px 40px rgba(0,0,0,.35));animation:float 5s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.hero-wave{position:absolute;left:0;right:0;bottom:-1px;height:60px;background:var(--white);
  clip-path:polygon(0 100%,100% 100%,100% 0,0 60%)}

/* ============ 通用区块 ============ */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-dark{background:linear-gradient(135deg,var(--blue-deep),var(--blue-2));color:#fff}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:3px;font-weight:700;color:var(--orange);margin-bottom:10px}
.section-head h2{font-size:clamp(26px,3.4vw,38px);color:var(--blue-deep);font-weight:800}
.section-head.light h2{color:#fff}
.section-head p{color:var(--gray);margin-top:12px;font-size:16px}
.section-head.light p{color:#d2ece0}

/* ============ 关于 ============ */
.about-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:start}
.about-text p{margin-bottom:16px;color:#33424f;font-size:16px}
.about-text strong{color:var(--blue-deep)}
.check-list{list-style:none;margin-top:22px;display:grid;gap:12px}
.check-list li{position:relative;padding-left:32px;color:#33424f}
.check-list li::before{content:"✓";position:absolute;left:0;top:-1px;width:22px;height:22px;border-radius:50%;
  background:var(--blue-2);color:#fff;font-size:13px;display:grid;place-items:center;font-weight:700}
.about-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.mini-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.25s;box-shadow:var(--shadow)}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--blue-2)}
.mc-num{font-size:26px;font-weight:800;color:var(--orange);display:block;margin-bottom:6px}
.mini-card h4{font-size:17px;color:var(--blue-deep);margin-bottom:6px}
.mini-card p{font-size:13.5px;color:var(--gray)}

/* ============ 产品 ============ */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  transition:.28s;position:relative;overflow:hidden}
.product-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--blue-2),var(--orange));transform:scaleX(0);transition:.3s;transform-origin:left}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.product-card:hover::before{transform:scaleX(1)}
.pc-icon{width:54px;height:54px;border-radius:12px;background:var(--bg-alt);color:var(--blue-2);
  display:grid;place-items:center;font-size:26px;margin-bottom:16px}
.product-card h3{font-size:19px;color:var(--blue-deep);margin-bottom:10px}
.product-card p{font-size:14px;color:var(--gray);margin-bottom:14px}
.product-card ul{list-style:none;display:grid;gap:7px}
.product-card ul li{font-size:13px;color:#46586a;padding-left:18px;position:relative}
.product-card ul li::before{content:"▸";position:absolute;left:0;color:var(--orange);font-weight:700}

/* ============ 应用 ============ */
.app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.app-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 18px;text-align:center;transition:.25s}
.app-item:hover{background:var(--blue-2);color:#fff;transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.app-ic{font-size:34px;display:block;margin-bottom:10px}
.app-item h4{font-size:15px;font-weight:600;margin-bottom:7px}
.app-item .i.lg{display:block;margin:0 auto 14px}
.app-desc{font-size:12.5px;line-height:1.55;color:var(--gray)}
.app-item:hover .app-desc{color:rgba(255,255,255,.88)}
.app-more{display:inline-block;margin-top:24px;padding:11px 26px;border-radius:30px;background:var(--blue-2);color:#fff;font-size:14px;font-weight:600;transition:.25s}
.app-more:hover{background:var(--blue-deep);transform:translateY(-2px)}

/* ============ 优势 ============ */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.why-item{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:28px 22px;transition:.25s}
.why-item:hover{background:rgba(255,255,255,.14);transform:translateY(-4px)}
.why-item h4{font-size:19px;color:#fff;margin-bottom:10px;position:relative;padding-left:16px}
.why-item h4::before{content:"";position:absolute;left:0;top:6px;width:5px;height:18px;border-radius:3px;background:var(--orange)}
.why-item p{font-size:14px;color:#d2ece0}

/* ============ 维修 ============ */
.service-layout{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:stretch}
.service-steps{list-style:none;display:grid;gap:14px}
.service-steps li{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 22px;align-items:center;box-shadow:var(--shadow)}
.service-steps li span{flex:0 0 40px;height:40px;border-radius:50%;background:#009870;color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
.service-steps h4{font-size:16px;color:var(--blue-deep)}
.service-steps p{font-size:13.5px;color:var(--gray)}
.service-callout{background:linear-gradient(135deg,var(--orange),var(--orange-2));color:#fff;border-radius:var(--radius);padding:34px 30px;display:flex;flex-direction:column;justify-content:center;box-shadow:var(--shadow-lg)}
.service-callout h3{font-size:22px;margin-bottom:10px}
.service-callout>p{font-size:14.5px;margin-bottom:22px;color:#fff6ec}
.callout-phones{display:grid;gap:14px}
.callout-phones div{background:rgba(255,255,255,.16);border-radius:10px;padding:12px 16px}
.callout-phones span{display:block;font-size:12px;opacity:.9}
.callout-phones a{font-size:22px;font-weight:800;color:#fff}

/* ============ 联系 ============ */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.ci-item{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;display:flex;gap:14px;align-items:flex-start}
.ci-ic{flex:0 0 40px;height:40px;border-radius:10px;background:var(--blue-2);color:#fff;display:grid;place-items:center;font-size:18px}
.ci-item h4{font-size:14px;color:var(--gray);font-weight:600;margin-bottom:2px}
.ci-item a,.ci-item p{font-size:15px;color:var(--blue-deep);font-weight:600}
.ci-item a:hover{color:var(--orange)}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.contact-form input,.contact-form textarea{width:100%;padding:13px 16px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;font-family:inherit;margin-bottom:14px;background:#fbfdff;transition:.2s;color:var(--ink)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--blue-2);background:#fff;box-shadow:0 0 0 3px rgba(21,101,192,.12)}
.contact-form textarea{resize:vertical}
.form-note{font-size:12.5px;color:var(--gray);margin-top:12px;text-align:center;display:none}
.form-note.show{display:block}
.form-note-ok{background:#eaf6f1;border:1px solid #009870;color:#013b2e;border-radius:10px;padding:12px 14px;line-height:1.7}
.form-note-ok a{color:#005f4e;text-decoration:underline}
.form-note-warn{background:#fff4e5;border:1px solid #f0a957;color:#7a4500;border-radius:10px;padding:10px 14px}

/* ============ 页脚 ============ */
.footer{background:var(--blue-deep);color:#bfe4d5;padding-top:56px}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1.2fr;gap:30px;padding-bottom:40px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;position:relative;padding-bottom:8px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:34px;height:2px;background:var(--orange)}
.footer-col a{display:block;color:#bfe4d5;font-size:14px;padding:4px 0;transition:.2s}
.footer-col a:hover{color:var(--orange);padding-left:4px}
.footer-col p{font-size:14px;margin-bottom:6px}
.logo-footer{margin-bottom:14px}
.logo-footer .logo-text strong{color:#fff}
.logo-footer .logo-text em{color:#9fd4c4}
.footer-about{font-size:13.5px;line-height:1.7;max-width:280px}
.footer-qr{margin-top:14px;display:flex;align-items:center;gap:12px}
.footer-qr img{width:96px;height:96px;border-radius:8px;background:#fff;padding:4px;display:block;box-shadow:0 2px 10px rgba(0,0,0,.18)}
.footer-qr span{font-size:12.5px;color:#9fd4c4;line-height:1.6}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;text-align:center;font-size:13px;color:#8fc4b4}
.footer-icp{margin:8px 0 0;font-size:12px;color:#7ba89a}
.footer-icp a{color:inherit;text-decoration:none;transition:color .2s}
.footer-icp a:hover{color:#fff;text-decoration:underline}

/* ============ 返回顶部 ============ */
.to-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;background:var(--orange);
  color:#fff;display:grid;place-items:center;font-size:22px;box-shadow:0 8px 20px rgba(0,95,78,.38);
  opacity:0;visibility:hidden;transform:translateY(12px);transition:.3s;z-index:40}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--orange-2)}

/* ============ 响应式 ============ */
@media(max-width:980px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .hero-text{order:2}
  .hero-visual{order:1;margin-bottom:10px}
  .hero-btns,.hero-stats{justify-content:center}
  .hero-sub{margin-left:auto;margin-right:auto}
  .about-grid,.service-layout,.contact-layout{grid-template-columns:1fr}
  .product-grid,.app-grid,.why-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .topbar-right{display:none}
  .nav{position:fixed;top:110px;left:0;right:0;background:#fff;flex-direction:column;gap:0;
    padding:10px 0;box-shadow:var(--shadow);transform:translateY(-150%);transition:.3s;border-bottom:1px solid var(--line)}
  .nav.open{transform:translateY(0)}
  .nav a{padding:14px 24px;width:100%;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:block}
  .header-inner{height:64px}
  .topbar-left{font-size:12px;gap:14px}
}
@media(max-width:560px){
  .product-grid,.app-grid,.why-grid,.about-cards,.contact-info{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .form-row{grid-template-columns:1fr}
  .section{padding:60px 0}
  .footer-inner{grid-template-columns:1fr;gap:26px}
  .footer-qr{justify-content:flex-start}
}

/* ============ 栏目页 Banner（应用领域） ============ */
.sub-hero{background:linear-gradient(135deg,var(--blue-deep),var(--blue-2));color:#fff;text-align:center;padding:76px 0 66px}
.sub-hero .eyebrow{color:#7cebc4}
.sub-hero h1{font-size:clamp(26px,3.6vw,42px);font-weight:800;margin:12px 0 16px;letter-spacing:.5px}
.sub-hero p{font-size:16px;line-height:1.85;max-width:760px;margin:0 auto 26px;color:#d2ece0}
.sub-hero p strong{color:#fff}
.sub-hero .hero-btns{justify-content:center}

/* ============ 应用领域详情列表 ============ */
.ind-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.ind-item{display:grid;grid-template-columns:150px 1fr;gap:34px;align-items:center;padding:42px 8px;border-bottom:1px solid var(--line)}
.ind-item:nth-child(even){background:var(--bg-alt)}
.ind-aside{position:relative;display:flex;flex-direction:column;align-items:center;gap:14px;padding-top:6px}
.ind-num{position:absolute;top:-34px;left:4px;font-size:44px;font-weight:800;color:var(--blue-2);opacity:.22;line-height:1}
.ind-ic{width:96px;height:96px;border-radius:22px;background:linear-gradient(135deg,var(--blue-2),#007a5c);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow)}
.ind-ic .i{width:46px;height:46px;stroke-width:1.6}
.ind-title{font-size:23px;font-weight:800;color:var(--blue-deep);margin-bottom:6px}
.ind-sub{font-size:15px;font-weight:700;color:var(--blue-2);margin-bottom:14px;letter-spacing:.5px}
.ind-sub::before{content:"";display:inline-block;width:22px;height:2px;background:var(--blue-2);vertical-align:middle;margin-right:9px}
.ind-desc{font-size:15px;line-height:1.85;color:var(--gray)}

/* 行动召唤框 */
.cta-box{display:flex;align-items:center;justify-content:space-between;gap:30px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 38px;box-shadow:var(--shadow)}
.cta-box h2{font-size:22px;color:var(--blue-deep);margin-bottom:8px}
.cta-box p{font-size:14.5px;color:var(--gray)}

/* 导航当前项高亮 */
.nav a.active{color:var(--blue-2)}
.nav a.active::after{left:0;width:100%}

@media(max-width:760px){
  .ind-item{grid-template-columns:1fr;text-align:center;gap:16px}
  .ind-aside{flex-direction:row;justify-content:center;padding-top:0}
  .ind-num{position:static}
  .ind-sub::before{display:none}
  .cta-box{flex-direction:column;text-align:center}
}