/* 作用：全站通用样式。修改颜色、间距、移动端布局时优先改这里。 */
:root{--primary-color:#043e8b;--accent-color:#f47c20;--neutral-light:#f5f5f5;--text-color:#333;--surface:#fff;--line:#d8dee8;--dark:#0d1b2a}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"Helvetica Neue","Segoe UI",sans-serif;color:var(--text-color);line-height:1.6;background:#fff}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}a:hover{color:var(--accent-color)}button,input,select,textarea{font:inherit}
.site-header{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}.nav-wrap{max-width:1180px;margin:0 auto;min-height:72px;padding:0 20px;display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--primary-color)}.brand-mark{width:40px;height:40px;border-radius:8px;background:var(--primary-color);color:#fff;display:grid;place-items:center}.nav-menu{display:flex;gap:18px;margin-left:auto;font-size:15px}.lang-switch{display:flex;gap:8px;align-items:center;color:#667}.nav-toggle{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);border-radius:8px;background:#fff}.nav-toggle span{display:block;width:20px;height:2px;background:var(--dark);margin:5px auto}
.hero{min-height:620px;display:flex;align-items:center;background:linear-gradient(90deg,rgba(4,62,139,.9),rgba(4,62,139,.58),rgba(4,62,139,.16)),url("../images/hero_tower_crane.svg") center/cover no-repeat;color:#fff}.hero-content{max-width:760px;margin-left:calc((100vw - 1180px)/2);padding:80px 20px}.hero h1{font-size:56px;line-height:1.05;margin:10px 0 18px}.hero p{font-size:20px;max-width:680px}.eyebrow{text-transform:uppercase;letter-spacing:0;font-weight:800;color:var(--accent-color);font-size:13px}.section{max-width:1180px;margin:0 auto;padding:74px 20px}.section-head{max-width:760px;margin-bottom:28px}.section h2,.page-hero h1{font-size:36px;line-height:1.15;margin:8px 0 12px}.grid{display:grid;gap:22px}.cards{grid-template-columns:repeat(4,minmax(0,1fr))}.feature-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.product-card,.news-card,.feature,.contact-panel,.case-card,details{border:1px solid var(--line);border-radius:8px;background:var(--surface);overflow:hidden}.card-body,.feature{padding:18px}.product-card img,.news-card img{aspect-ratio:4/3;object-fit:cover;background:var(--neutral-light)}.badge{display:inline-block;background:#eef5ff;color:var(--primary-color);border-radius:999px;padding:3px 10px;font-size:13px;font-weight:700}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:13px 22px;border-radius:8px;border:1px solid transparent;font-weight:800;cursor:pointer;font-size:16px}.btn-primary{background:var(--accent-color);color:#fff;box-shadow:0 10px 22px rgba(244,124,32,.24)}.btn-outline{border-color:var(--primary-color);color:var(--primary-color);background:#fff}.btn-light{background:#fff;color:var(--primary-color)}.btn-zalo{width:100%;margin-bottom:18px;background:#0068ff;color:#fff}.text-link{font-weight:800;color:var(--primary-color)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.stats.wide{grid-template-columns:repeat(4,1fr)}.stats div{padding:24px;border-left:4px solid var(--accent-color);background:var(--neutral-light);border-radius:8px}.stats strong{display:block;font-size:34px;color:var(--primary-color)}.stats span{display:block}.cta-band{background:var(--primary-color);color:#fff;text-align:center;padding:70px 20px}.cta-band h2{font-size:36px;margin:0 0 12px}.page-hero{background:linear-gradient(90deg,#043e8b,#1f6aa5);color:#fff;padding:90px 20px;text-align:center}.page-hero.compact h1{margin:0 auto 12px;max-width:900px}.page-hero p{max-width:760px;margin:0 auto}.filter-bar{display:grid;grid-template-columns:repeat(5,minmax(150px,1fr));gap:16px;margin-bottom:22px}.filter-bar label,.contact-form label{display:grid;gap:8px;font-weight:700}.filter-bar input,.filter-bar select,.contact-form input,.contact-form textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:12px;background:#fff}.category-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}.category-tabs a{padding:9px 12px;border:1px solid var(--line);border-radius:999px;background:var(--neutral-light)}
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:44px}.detail-media{border:1px solid var(--line);border-radius:8px;background:var(--neutral-light);padding:20px}.spec-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.spec-list div{background:var(--neutral-light);border-radius:8px;padding:12px}.spec-list dt{font-weight:800;color:var(--primary-color)}.spec-list dd{margin:0}.button-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.source-note{margin-top:18px;font-size:13px;color:#667}.service-list,.case-list{display:grid;gap:20px}.service-row,.case-card{display:grid;grid-template-columns:260px 1fr;gap:24px;padding:20px;align-items:center}.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.gallery-grid figure{margin:0}.gallery-grid img{border-radius:8px;border:1px solid var(--line)}.gallery-grid figcaption{margin-top:8px;color:#667}.check-list{display:grid;gap:12px}.rounded-media{border-radius:8px;border:1px solid var(--line)}.article{max-width:860px;margin:0 auto;padding:76px 20px}.article h1{font-size:42px;line-height:1.14}.article img{border-radius:8px;margin:28px 0;border:1px solid var(--line)}details{padding:18px;margin-bottom:14px}summary{font-weight:800;cursor:pointer}.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:28px}.contact-panel,.contact-form{padding:24px;border:1px solid var(--line);border-radius:8px}.inline-icon-link,.footer-icon-link{display:inline-flex;align-items:center;gap:8px}.inline-icon-link img,.footer-icon-link img{width:22px;height:22px}.qr-link img{width:96px;height:96px;border-radius:8px;background:#fff;padding:6px}.map-placeholder{margin-top:18px;min-height:180px;border:1px dashed var(--line);border-radius:8px;display:grid;place-items:center;background:var(--neutral-light);text-align:center;padding:16px}.form-message{font-weight:800}.floating-contact{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:30;display:grid;gap:10px}.floating-contact a{width:52px;height:52px;border-radius:999px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 28px rgba(13,27,42,.18);display:grid;place-items:center}.floating-contact img{width:28px;height:28px}.cookie-banner{position:fixed;left:20px;right:20px;bottom:18px;z-index:40;display:none;align-items:center;justify-content:space-between;gap:16px;max-width:980px;margin:0 auto;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 12px 34px rgba(13,27,42,.18)}.cookie-banner.is-visible{display:flex}.cookie-banner p{margin:0}.cookie-banner .btn{min-height:40px;padding:8px 14px}.site-footer{background:var(--dark);color:#dbe6f1}.footer-grid{max-width:1180px;margin:0 auto;padding:46px 20px;display:grid;grid-template-columns:1.2fr 1.1fr .9fr .9fr;gap:28px}.footer-grid h2{color:#fff;font-size:20px}.footer-grid a{display:block;margin:7px 0}.footer-grid .footer-icon-link{display:inline-flex}.copyright{max-width:1180px;margin:0 auto;padding:16px 20px;border-top:1px solid rgba(255,255,255,.12)}
@media (max-width:900px){.nav-toggle{display:block}.nav-menu{position:absolute;left:0;right:0;top:72px;display:none;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:18px 20px}.nav-menu.is-open{display:flex}.lang-switch{margin-left:0}.hero{min-height:560px}.hero-content{margin-left:0}.hero h1{font-size:38px}.cards,.feature-grid,.stats.wide{grid-template-columns:repeat(2,1fr)}.split,.product-detail,.contact-grid,.gallery-grid{grid-template-columns:1fr}.filter-bar{grid-template-columns:repeat(2,1fr)}.service-row,.case-card{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.cookie-banner{align-items:flex-start;flex-direction:column}}
@media (max-width:560px){.nav-wrap{padding:0 14px}.brand span:last-child{max-width:150px}.hero h1{font-size:32px}.hero p{font-size:17px}.section{padding:52px 16px}.section h2,.page-hero h1,.cta-band h2{font-size:28px}.cards,.feature-grid,.stats,.stats.wide,.filter-bar,.spec-list{grid-template-columns:1fr}.product-card img,.news-card img{aspect-ratio:16/10}.floating-contact{right:12px;bottom:12px;top:auto;transform:none;grid-auto-flow:column}.floating-contact a{width:48px;height:48px}.footer-grid{grid-template-columns:1fr;padding:34px 16px}}