*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{font-family:"Helvetica Neue","PingFang SC","Microsoft YaHei",sans-serif;color:#222;line-height:1.6;background:#fff;-webkit-text-size-adjust:100%}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;background:none;border:0;cursor:pointer;color:inherit;padding:0}

/* 覆盖 common.html 引入的 bootstrap 等框架对首页区块的默认 margin/line-height 污染；
   下面会给 .section-title/.pc-name/.sc-name 等自定义类显式重设，因此不会冲突 */
.home-section h1,
.home-section h2,
.home-section h3,
.home-section h4,
.home-section h5,
.home-section h6,
.home-section p,
.home-section ul,
.home-section ol,
.home-section li{margin:0;padding:0}

:root{
  --brand:#012b51;
  --brand-dark:#001a33;
  --header-h:80px;
  --container:1280px;
  --gutter:24px;
  --color-text:#222;
  --color-text-2:#666;
  --color-border:#eee;
}

.site-header{background:transparent}
.header-inner{position:sticky;top:0;z-index:100;width:100%;height:var(--header-h);background:#fff;box-shadow:0 1px 0 rgba(0,0,0,.06)}
.header-nav{max-width:100%;margin:0 auto;padding:0 60px;height:100%;display:flex;align-items:center;gap:32px}

.site-logo{display:flex;align-items:center;flex-shrink:0;padding:10px 0;gap:10px;text-decoration:none}
.site-logo img{height:48px;width:auto;display:block;border-radius:6px}
.site-logo .logo-text{display:flex;flex-direction:column;align-items:flex-start;gap:2px;line-height:1.2;white-space:nowrap}
.site-logo .logo-name{font-size:20px;font-weight:700;color:var(--brand);letter-spacing:.5px}
.site-logo .logo-tag{font-size:11px;font-weight:500;color:#8a94a6;letter-spacing:.5px}

.site-nav{flex:1;display:flex;justify-content:center}
.nav-list{display:flex;align-items:center;gap:4px}
.nav-list>li{position:relative}
.nav-list>li>a{display:block;padding:10px 18px;font-size:15px;font-weight:500;color:var(--color-text);transition:color .2s;white-space:nowrap}
.nav-list>li>a:hover,.nav-list>li.active>a{color:var(--brand)}
.nav-list .submenu{position:absolute;top:100%;left:0;min-width:200px;background:#fff;border:1px solid var(--color-border);box-shadow:0 8px 24px rgba(0,0,0,.08);padding:8px 0;opacity:0;visibility:hidden;transform:translateY(8px);transition:.2s;z-index:50}
.nav-list>li:hover>.submenu{opacity:1;visibility:visible;transform:translateY(0)}
.submenu li a{display:block;padding:10px 18px;font-size:14px;color:#333;transition:color .2s,background .2s;white-space:nowrap}
.submenu li a:hover{color:var(--brand);background:#faf6f6}
.has-sub>a::after{content:"\25BE";margin-left:4px;font-size:10px;color:#999;display:inline-block;transition:transform .2s}
.has-sub.submenu-open>a::after{transform:rotate(180deg)}

/* 三级下拉（对接旧站 vo.child 嵌套：产品中心 > 分类 > 细分） */
.nav-list .submenu .submenu{top:0;left:100%;margin-top:0;transform:translateX(8px)}
.nav-list .submenu .has-sub:hover>.submenu{opacity:1;visibility:visible;transform:translateX(0)}
.submenu li.has-sub>a::after{content:"\25B8";margin-left:auto}

.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}

/* GET QUOTE 按钮（bentewei 风，红色胶囊） */
.get-quote{display:inline-flex;align-items:center;justify-content:center;padding:11px 24px;background:var(--brand);color:#fff;font-size:14px;font-weight:700;letter-spacing:1px;border-radius:30px;transition:.2s;white-space:nowrap;line-height:1;border:2px solid var(--brand)}
.get-quote:hover{background:#fff;color:var(--brand)}

/* 语言切换器（地球图标 + CN/EN 下拉） */
.lang-switcher{position:relative}
.lang-toggle{display:flex;align-items:center;gap:8px;padding:9px 16px;border:1px solid #e5e5e5;border-radius:30px;font-size:14px;color:#333;font-weight:600;background:#fff;transition:.2s;cursor:pointer;line-height:1}
.lang-toggle:hover{border-color:var(--brand);color:var(--brand)}
.lang-toggle .globe-icon{flex-shrink:0;color:var(--brand);width:16px;height:16px}
.lang-toggle .caret-icon{transition:transform .2s;color:#999;width:10px;height:6px}
.lang-switcher.is-open .lang-toggle .caret-icon{transform:rotate(180deg)}
.lang-menu{position:absolute;top:calc(100% + 10px);right:0;min-width:160px;background:#fff;border-radius:10px;box-shadow:0 8px 28px rgba(0,0,0,.12);padding:6px 0;opacity:0;visibility:hidden;transform:translateY(-8px);transition:.2s;z-index:60;border:1px solid #f0f0f0}
.lang-switcher.is-open .lang-menu{opacity:1;visibility:visible;transform:translateY(0)}
.lang-menu li a{display:flex;align-items:center;gap:8px;padding:9px 16px;font-size:14px;color:#333;transition:.2s}
.lang-menu li a:hover{background:#faf6f6;color:var(--brand)}
.lang-menu li.is-active a{color:var(--brand);font-weight:600;background:#faf6f6}

/* 抽屉底部行动区（仅移动端显示） */
.drawer-actions{display:none}

.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:5px;margin-left:auto}
.nav-toggle span{display:block;width:24px;height:2px;background:#222;border-radius:1px;transition:transform .25s,opacity .25s}
.menu-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-open .nav-toggle span:nth-child(2){opacity:0}
.menu-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

a:focus,a:focus-visible,a:active,button:focus,button:focus-visible,button:active{outline:none}

.preview-note{background:#fffbe6;border:1px dashed #f0c040;padding:14px 20px;margin:24px auto;max-width:var(--container);border-radius:6px;font-size:14px;color:#666}
.preview-note strong{color:#8a6d00}

.site-main{min-height:50vh}

@media (max-width:1761px){
  .header-nav{gap:12px;padding:0 16px}
  .site-logo .logo-text{flex-direction:column;align-items:flex-start;gap:2px;line-height:1.2}
  .site-logo .logo-name{font-size:17px}
  .site-logo .logo-tag{font-size:10px;letter-spacing:.3px}
  .nav-list>li>a{padding:10px 10px;font-size:12px}
  .get-quote{padding:9px 14px;font-size:12px}
}

@media (max-width:992px){
  :root{--header-h:64px}
  .header-nav{gap:12px;padding:0 16px}
  .site-logo .logo-tag{display:none}
  .header-actions{margin-left:auto;display:flex;align-items:center;gap:8px;flex-shrink:0}
  .nav-toggle{display:flex;order:99;margin-left:0}
  .site-nav{position:fixed;top:0;left:0;right:0;width:auto;max-width:85%;height:100vh;height:100dvh;background:#fff;z-index:9999;transform:translateX(-100%);transition:transform .3s ease;overflow-y:auto;padding:64px 0 24px;box-shadow:2px 0 16px rgba(0,0,0,.12);display:flex;flex-direction:column}
  .menu-open{overflow:hidden}
  .menu-open .site-nav{transform:translateX(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list>li{border-bottom:1px solid #f0f0f0}
  .nav-list>li>a{padding:14px 20px;display:block;position:relative;padding-right:48px}
  .has-sub>a::after{position:absolute;right:20px;top:50%;transform:translateY(-50%);margin:0}
  .has-sub.submenu-open>a::after{transform:translateY(-50%) rotate(180deg)}
  .nav-list .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;background:#fafafa;padding:0;max-height:0;overflow:hidden;transition:max-height .3s;display:block}
  .has-sub.submenu-open>.submenu{max-height:600px}
  .submenu li a{padding:12px 20px 12px 36px}
  .header-phone .phone-text{display:none}
  .header-actions .get-quote{display:none}
  .drawer-actions{display:block;margin-top:auto;padding:20px 16px 16px;border-top:1px solid #f0f0f0;background:#fff;position:sticky;bottom:0;flex-shrink:0}
  .drawer-actions .get-quote{display:flex;width:100%;padding:14px 20px;font-size:15px;letter-spacing:1.5px;justify-content:center}
}

/* 首页 Hero 轮播（原生，无第三方库） */
.hero-carousel{position:relative;overflow:hidden;background:#0a1a2a}
.hero-track{display:flex;transition:transform .6s ease;will-change:transform}
.hero-slide{flex:0 0 100%;position:relative}
.hero-slide img{width:100%;height:72vh;min-height:440px;object-fit:cover;display:block}
.hero-caption{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:0 24px;color:#fff}
.hero-caption h1{font-size:48px;font-weight:800;letter-spacing:1px;text-shadow:0 2px 14px rgba(0,0,0,.4);max-width:920px;line-height:1.18}
.hero-caption p{font-size:18px;margin:16px 0 28px;opacity:.92;text-shadow:0 1px 8px rgba(0,0,0,.3)}
.hero-caption .hero-cta{display:inline-flex;padding:13px 36px;background:var(--brand);color:#fff;font-size:16px;font-weight:700;border-radius:30px;border:2px solid var(--brand);transition:.2s}
.hero-caption .hero-cta:hover{background:transparent;color:#fff}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.18);color:#fff;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:26px;line-height:1;transition:.2s;z-index:3}
.hero-arrow:hover{background:var(--brand)}
.hero-arrow.prev{left:20px}
.hero-arrow.next{right:20px}
.hero-dots{position:absolute;left:0;right:0;bottom:22px;display:flex;justify-content:center;gap:10px;z-index:3}
.hero-dot{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.5);border:0;cursor:pointer;padding:0;transition:.2s}
.hero-dot.is-active{background:#fff;width:26px;border-radius:6px}

/* 内页栏目图 banner：首页走 hero-carousel，内页（$is_inside eq 1）走此占位；后续接 {$cateimg} 或后台广告位 */
.page-banner{height:200px;background:linear-gradient(120deg,var(--brand),var(--brand-dark))}

/* 简易 footer（占位，后续细化） */
.site-footer{background:#1c2530;color:#c9d2dc;padding:48px 0 0}
.footer-inner{max-width:var(--container);margin:0 auto;padding:0 var(--gutter);display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.footer-logo{display:flex;align-items:center;gap:12px}
.footer-logo-img{height:36px;width:auto;display:block;filter:brightness(1.18) contrast(1.08)}
.footer-logo-text{display:flex;flex-direction:column;align-items:flex-start;gap:2px;line-height:1.2}
.footer-logo-name{font-size:24px;font-weight:800;color:#fff;letter-spacing:.5px}
.footer-logo-tag{font-size:11px;font-weight:500;color:#8aa0b4;letter-spacing:.5px}
.footer-col p{font-size:14px;line-height:1.9;margin-top:12px;color:#9fb0c0}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:#9fb0c0;padding:5px 0;transition:.2s}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:40px;padding:18px 0;text-align:center;font-size:13px;color:#7e8c9a}

/* footer 联系信息（图标 + 电话/邮箱） */
.footer-contact{list-style:none;margin-top:18px;display:flex;flex-direction:column;gap:10px}
.footer-contact li{display:flex;align-items:center;gap:10px;font-size:14px;color:#9fb0c0}
.footer-contact svg{flex-shrink:0;color:#fff}
.footer-contact a{color:#9fb0c0;transition:.2s}
.footer-contact a:hover{color:#fff}

/* footer 目标市场彩色圆点 */
.fm-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--fm-dot,#012b51);margin-right:8px;flex-shrink:0}

/* 页脚获取报价按钮 + 移动端底部 tab 栏 + 返回顶部 */
.footer-cta{display:inline-block;margin-top:10px;padding:9px 22px;background:var(--brand);color:#fff;font-size:14px;font-weight:600;border-radius:30px;transition:.2s}
.footer-cta:hover{background:var(--brand-dark)}
.mobile-footer{display:none}
/* ===== Right floating quick-contact bar (WhatsApp / TikTok / Facebook / Back to top) ===== */
.side-contact{position:fixed;right:14px;bottom:24px;z-index:9992;display:flex;flex-direction:column;align-items:flex-end;gap:12px}
.side-item{position:relative;display:flex;align-items:center;justify-content:flex-end;gap:10px;text-decoration:none;cursor:pointer}
.side-item svg{width:46px;height:46px;border-radius:50%;background:#fff;color:#25D366;fill:#25D366;padding:12px;box-sizing:border-box;box-shadow:0 4px 14px rgba(0,0,0,.16);transition:transform .2s,box-shadow .2s;flex-shrink:0}
.side-whatsapp svg{color:#25D366;fill:#25D366}
.side-tiktok svg{color:#000;fill:#000}
.side-facebook svg{color:#1877F2;fill:#1877F2}
.side-item:hover svg{transform:translateY(-2px);box-shadow:0 8px 20px rgba(1,43,81,.32)}
.side-label{position:absolute;right:58px;top:50%;transform:translateY(-50%) translateX(8px);background:#fff;color:#333;font-size:13px;font-weight:600;padding:6px 12px;border-radius:6px;box-shadow:0 2px 10px rgba(0,0,0,.12);white-space:nowrap;opacity:0;visibility:hidden;transition:.2s;pointer-events:none}
.side-item:hover .side-label{opacity:1;visibility:visible;transform:translateY(-50%) translateX(0)}
.side-qr{position:absolute;right:58px;bottom:0;background:#fff;border-radius:10px;padding:10px;box-shadow:0 8px 28px rgba(0,0,0,.18);opacity:0;visibility:hidden;transform:translateX(8px);transition:.2s;pointer-events:none;width:140px}
.side-qr::after{content:"";position:absolute;right:-7px;top:50%;transform:translateY(-50%);border:7px solid transparent;border-left-color:#fff}
.side-qr img{width:120px;height:120px;object-fit:contain;display:block;margin:0 auto;border-radius:4px}
.side-item:hover .side-qr{opacity:1;visibility:visible;transform:translateX(0)}
.side-top svg{background:#fff;color:var(--brand);fill:var(--brand)}
/* Back-to-top: suppress hover label bubble */
.side-top .side-label{display:none}

@media (max-width:992px){
  .mobile-footer{position:fixed;left:0;right:0;bottom:0;z-index:9990;display:flex;background:#fff;border-top:1px solid #eee;box-shadow:0 -2px 10px rgba(0,0,0,.06)}
  .mobile-footer a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:7px 0;color:#666;font-size:12px}
  .mobile-footer a:active{color:var(--brand)}
  .mobile-footer svg{width:22px;height:22px}
  .mobile-footer h5{font-size:11px;font-weight:500;margin:0}
  .side-whatsapp,.side-tiktok,.side-facebook{display:none}
  .side-contact{bottom:70px;right:12px}
  body{padding-bottom:56px}
}

@media (max-width:992px){
  .hero-slide img{height:46vh;min-height:280px}
  .hero-caption h1{font-size:26px}
  .hero-caption p{font-size:14px;margin:10px 0 18px}
  .hero-arrow{width:40px;height:40px;font-size:22px}
  .hero-arrow.prev{left:10px}
  .hero-arrow.next{right:10px}
  .hero-dots{bottom:14px}
  .footer-inner{grid-template-columns:1fr;gap:24px}
}

/* ===== 首页内容区块通用 ===== */
.home-section{padding:76px 0;background:#fff}
.home-section.alt{background:#f6fafd}
.section-inner{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section-head{text-align:center;max-width:780px;margin:0 auto 52px}
.section-title{font-size:34px;font-weight:800;color:#1a1a1a;letter-spacing:1px;line-height:1.3;margin:0}
.section-desc{margin:14px 0 0;font-size:15px;color:var(--color-text-2);line-height:1.8}

/* 区块1：核心产品系列卡片网格（仿 bentewei：图 + 标签 + 标题 + 文案 + 按钮） */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.product-card{background:#fff;border:1px solid var(--color-border);border-radius:10px;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s;display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(1,43,81,.18);border-color:rgba(1,43,81,.4)}
.pc-thumb{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#eef3f7}
.pc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.product-card:hover .pc-thumb img{transform:scale(1.05)}
.pc-tag{position:absolute;top:14px;left:14px;background:var(--brand);color:#fff;font-size:12px;font-weight:700;letter-spacing:1px;padding:5px 12px;border-radius:4px;line-height:1.2}
.pc-body{padding:24px 22px 26px;display:flex;flex-direction:column;flex:1;text-align:center}
.pc-name{font-size:19px;font-weight:700;color:#1a1a1a;line-height:1.4;margin:0 0 10px}
.pc-desc{font-size:13px;color:var(--color-text-2);line-height:1.75;flex:1;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pc-btn{display:inline-block;align-self:center;padding:8px 28px;border:1px solid #d8d8d8;border-radius:4px;color:#444;font-size:14px;font-weight:600;transition:.2s;line-height:1.4;background:#fff}
.pc-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff}

@media (max-width:992px){
  .home-section{padding:52px 0}
  .section-title{font-size:26px}
  .section-head{margin-bottom:36px}
  .product-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .pc-body{padding:20px 18px 22px}
  .pc-name{font-size:17px}
}
@media (max-width:560px){
  .product-grid{grid-template-columns:1fr;gap:18px}
  .pc-body{padding:22px 20px 24px}
  .pc-tag{top:10px;left:10px;font-size:11px;padding:4px 10px}
}

/* 区块2：应用场景｜系统解决方案 */
.solution-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.solution-card{background:#fff;border-radius:14px;overflow:hidden;border:1px solid #e6edf2;transition:transform .25s,box-shadow .25s,border-color .25s;display:flex;flex-direction:column}
.solution-card:hover{transform:translateY(-6px);box-shadow:0 16px 38px rgba(1,43,81,.14);border-color:rgba(1,43,81,.35)}
.sc-thumb{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:#eef3f7}
.sc-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.solution-card:hover .sc-thumb img{transform:scale(1.05)}
.sc-body{padding:22px 24px 26px;text-align:center;display:flex;flex-direction:column;flex:1}
.sc-name{font-size:18px;font-weight:700;color:#1a1a1a;line-height:1.4;margin:0 0 10px}
.sc-desc{font-size:14px;color:var(--color-text-2);line-height:1.75;margin-bottom:16px;flex:1}
.sc-link{font-size:14px;font-weight:600;color:var(--brand);transition:.2s}
.sc-link:hover{text-decoration:underline}

@media (max-width:992px){
  .solution-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .sc-body{padding:20px 18px 24px}
}
@media (max-width:400px){
  .solution-grid{grid-template-columns:1fr;gap:16px}
  .sc-body{padding:18px 20px 22px}
}

/* 区块3：我们的优势（左图右文 + 2×2 优势项） */
.advantages{background:#fff}
.adv-layout{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:56px;align-items:center}
.adv-media{position:relative;border-radius:14px;overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.1)}
.adv-media img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;display:block}
.adv-badge{position:absolute;left:20px;bottom:20px;display:inline-block;padding:8px 18px;background:#012b51;color:#fff;font-size:13px;font-weight:700;letter-spacing:.5px;border-radius:4px;text-transform:uppercase}
.adv-content .section-title{text-align:left}
.adv-content .section-desc{text-align:left;margin:14px 0 34px;color:var(--color-text-2)}
.adv-feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px 28px}
.adv-feature{display:flex;align-items:flex-start;gap:14px}
.adv-check{flex:0 0 24px;width:24px;height:24px;border-radius:50%;background:#22c55e;color:#fff;display:flex;align-items:center;justify-content:center}
.adv-check svg{width:14px;height:14px}
.adv-feature-text h3{font-size:17px;font-weight:700;color:#1a1a1a;line-height:24px;margin:0 0 6px}
.adv-feature-text p{font-size:14px;color:var(--color-text-2);line-height:1.75;margin:0}
.adv-btn{display:inline-block;margin-top:32px;padding:12px 34px;border:1px solid #d8d8d8;border-radius:4px;color:#444;font-size:15px;font-weight:600;transition:.2s}
.adv-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff}

@media (max-width:992px){
  .adv-layout{grid-template-columns:1fr;gap:36px}
  .adv-media{max-width:680px;margin:0 auto;width:100%}
  .adv-content .section-title,.adv-content .section-desc{text-align:center}
  .adv-btn{display:table;margin-left:auto;margin-right:auto}
}
@media (max-width:560px){
  .adv-feature-grid{grid-template-columns:1fr;gap:18px}
  .adv-content .section-title{font-size:26px}
  .adv-btn{width:100%;text-align:center}
}

/* ===== Section 4: Installation Service (left 4-step list / right large image) ===== */
.is-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:stretch}
.is-steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;justify-content:space-between;height:100%;min-height:460px}
.is-step{display:flex;align-items:flex-start;gap:28px;padding:8px 0;border-bottom:1px solid var(--color-border)}
.is-step:last-child{border-bottom:none}
.is-num{font-family:Georgia,'Times New Roman',serif;font-size:76px;line-height:1;color:var(--brand);opacity:.18;font-weight:700;flex:0 0 88px;text-align:center;letter-spacing:-1px}
.is-body{flex:1;min-width:0;padding-top:4px}
.is-title{font-size:22px;font-weight:700;color:var(--brand);margin:0 0 12px;letter-spacing:.5px}
.is-desc{font-size:15px;line-height:1.85;color:var(--color-text-2);margin:0}
.is-image{border-radius:12px;overflow:hidden;background:#f0f3f6;aspect-ratio:4/3}
.is-image img{width:100%;height:100%;object-fit:cover;display:block}

.is-btn-wrap{grid-column:1 / -1;display:flex;justify-content:center;margin-top:6px}
.is-btn{display:inline-block;padding:12px 34px;border:1px solid #d8d8d8;border-radius:4px;background:#fff;color:#444;font-size:15px;font-weight:600;letter-spacing:0;transition:.2s;box-shadow:none;text-decoration:none}
.is-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:none;box-shadow:none}
.is-btn .is-arrow{display:inline-block;transition:transform .2s;margin-left:8px}
.is-btn:hover .is-arrow{transform:translateX(4px)}

@media (max-width:992px){
  .is-grid{grid-template-columns:1fr;gap:36px}
  .is-steps{height:auto;min-height:0;justify-content:flex-start;gap:0}
  .is-step{gap:18px;padding:20px 0}
  .is-num{font-size:48px;flex:0 0 54px}
  .is-title{font-size:17px}
  .is-desc{font-size:14px}
  .is-btn{padding:11px 28px;font-size:14px}
  .is-image{aspect-ratio:4/3}
}

/* ===== FAQ 区块（浅灰蓝背景，同解决方案） ===== */
.faq-section{background:#f6fafd}
.faq-section .section-title{color:#1a1a1a}
.faq-section .section-desc{color:var(--color-text-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.faq-head{display:grid;grid-template-columns:1fr auto;align-items:end;gap:40px;margin-bottom:48px}
.faq-head-left{max-width:900px;min-width:0}
.faq-tag{display:inline-block;font-size:13px;font-weight:700;letter-spacing:2px;color:var(--brand);margin-bottom:14px;text-transform:uppercase}
.faq-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 30px;background:var(--brand);color:#fff;font-size:15px;font-weight:700;border-radius:6px;transition:.2s;white-space:nowrap;line-height:1}
.faq-btn:hover{background:var(--brand-dark);transform:translateY(-2px)}
.faq-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.faq-card{background:#fff;border:1px solid #e6edf2;border-radius:14px;padding:30px 24px;transition:transform .25s,box-shadow .25s,border-color .25s}
.faq-card:hover{transform:translateY(-6px);box-shadow:0 16px 38px rgba(1,43,81,.14);border-color:rgba(1,43,81,.35)}
.faq-card h3{font-size:18px;font-weight:700;color:#1a1a1a;margin:0 0 12px;line-height:1.4}
.faq-card p{font-size:14px;color:var(--color-text-2);line-height:1.75;margin:0}

@media (max-width:992px){
  .faq-head{grid-template-columns:1fr;gap:24px;text-align:center}
  .faq-head-left{max-width:100%}
  .faq-btn{margin:0 auto}
  .faq-grid{grid-template-columns:repeat(2,1fr);gap:18px}
  .faq-card{padding:26px 22px}
}
@media (max-width:560px){
  .faq-grid{grid-template-columns:1fr;gap:16px}
  .faq-card{padding:22px 20px}
  .faq-btn{width:100%;text-align:center}
}

/* ===== 区块6：询盘表单 ===== */
.home-section.inquiry-section.alt{background:#fff}
.inquiry-section .section-head{max-width:1180px}
.inquiry-section .section-title{letter-spacing:.3px}
.inquiry-section .section-desc{max-width:980px;margin-left:auto;margin-right:auto}
.inquiry-form{max-width:980px;margin:0 auto;background:#fff;border:1px solid #e6edf2;border-radius:16px;padding:42px 48px;box-shadow:0 8px 30px rgba(0,0,0,.04)}
.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:22px 28px;margin-bottom:22px}
.form-row-3{grid-template-columns:repeat(3,1fr)}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field-full{grid-column:1/-1}
.inquiry-form label{font-size:14px;font-weight:600;color:#1a1a1a;line-height:1.4}
.inquiry-form input,
.inquiry-form select,
.inquiry-form textarea{width:100%;padding:13px 16px;border:1px solid #d8dde3;border-radius:8px;font-size:14px;color:#333;background:#fff;transition:border-color .2s,box-shadow .2s;line-height:1.5}
.inquiry-form input:focus,
.inquiry-form select:focus,
.inquiry-form textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(1,43,81,.12)}
.inquiry-form input::placeholder,
.inquiry-form textarea::placeholder{color:#aab2ba}
.inquiry-form select{color:#666;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 1l5 5 5-5'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}
.inquiry-form textarea{resize:vertical;min-height:110px}
.form-actions{text-align:center;margin-top:32px}
.inquiry-submit{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 40px;background:var(--brand);color:#fff;font-size:16px;font-weight:700;border:0;border-radius:30px;transition:.2s;cursor:pointer;line-height:1}
.inquiry-submit:hover{background:var(--brand-dark);transform:translateY(-2px)}
.inquiry-submit svg{flex-shrink:0}
.inquiry-privacy{margin-top:18px;font-size:13px;color:#888;line-height:1.6}

@media (max-width:992px){
  .inquiry-form{padding:32px 28px}
  .form-row{gap:18px 22px}
}
@media (max-width:560px){
  .inquiry-form{padding:26px 20px;border-radius:12px}
  .form-row,.form-row-3{grid-template-columns:1fr}
  .inquiry-submit{width:100%}
  .inquiry-section .section-title{white-space:normal}
}

/* ===== Inquiry Form: Restricted Browser Notice (WeChat/QQ/Weibo/DingTalk) ===== */
.wzt-wechat-notice{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:9999;display:flex;align-items:center;justify-content:center;padding:20px;animation:wn-fade .2s ease}
.wzt-wechat-notice .wn-inner{background:#fff;border-radius:14px;max-width:480px;width:100%;padding:28px 28px 22px;box-shadow:0 20px 50px rgba(0,0,0,.25);animation:wn-slide .25s ease;position:relative}
.wzt-wechat-notice h3{margin:0 0 10px;font-size:17px;color:#012b51;text-align:center;line-height:1.4;font-weight:600}
.wzt-wechat-notice p{margin:0 0 18px;font-size:13.5px;color:#555;line-height:1.7;text-align:left}
.wzt-wechat-notice p b{color:#012b51}
.wzt-wechat-notice .wn-actions{display:flex;flex-direction:column;gap:10px;margin-bottom:12px}
.wzt-wechat-notice .wn-copy,
.wzt-wechat-notice .wn-tel{display:flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:8px;font-size:14.5px;font-weight:600;cursor:pointer;border:none;text-decoration:none;line-height:1;transition:.2s;font-family:inherit}
.wzt-wechat-notice .wn-copy{background:#012b51;color:#fff}
.wzt-wechat-notice .wn-copy:hover{background:#023a63}
.wzt-wechat-notice .wn-tel{background:#fff;color:#012b51;border:1px solid #012b51}
.wzt-wechat-notice .wn-tel:hover{background:#f0f4f8}
.wzt-wechat-notice .wn-preview{font-size:13px;color:#666;border-top:1px solid #eef1f5;padding-top:12px}
.wzt-wechat-notice .wn-preview summary{cursor:pointer;font-weight:600;color:#012b51;outline:none;user-select:none;list-style:none}
.wzt-wechat-notice .wn-preview summary::-webkit-details-marker{display:none}
.wzt-wechat-notice .wn-preview pre{margin:10px 0 0;padding:12px;background:#f6fafd;border-radius:6px;white-space:pre-wrap;word-break:break-word;font-family:inherit;font-size:12px;line-height:1.6;max-height:200px;overflow:auto;color:#333}
@keyframes wn-fade{from{opacity:0}to{opacity:1}}
@keyframes wn-slide{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
@media (max-width: 480px){
  .wzt-wechat-notice .wn-inner{padding:24px 20px}
  .wzt-wechat-notice h3{font-size:16px}
  .wzt-wechat-notice .wn-copy,
  .wzt-wechat-notice .wn-tel{font-size:14px;padding:11px 14px}
}