/* ============================================================
   苏州璟丰机电 - 全新官网  |  style.css
   工业科技风 · 深空蓝 + 橙色动能
   ============================================================ */
:root{
  --navy:#0a1526;
  --navy-2:#0e1f3a;
  --navy-3:#13294b;
  --ink:#0f172a;
  --text:#475569;
  --line:#e6eaf2;
  --bg:#f5f7fb;
  --white:#fff;
  --orange:#ff7a1a;
  --orange-2:#ff9a3d;
  --blue:#2f7df6;
  --cyan:#19b5c8;
  --radius:14px;
  --shadow:0 10px 30px rgba(10,21,38,.08);
  --shadow-lg:0 24px 60px rgba(10,21,38,.16);
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{font-family:var(--font);color:var(--ink);background:var(--white);line-height:1.7;font-size:15px;overflow-x:hidden}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .25s}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{width:min(1200px,92%);margin:0 auto}
::selection{background:var(--orange);color:#fff}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--navy);color:#aebad0;font-size:12.5px;position:relative;z-index:60}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:34px}
.topbar strong{color:#e8edf5;font-weight:600}
.topbar .hot{color:var(--orange-2);font-weight:600}
.topbar-right{display:flex;gap:18px}
.topbar-right a:hover{color:#fff}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.site-header.scrolled{box-shadow:0 6px 24px rgba(10,21,38,.1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand img{height:44px;width:auto}
.brand .brand-txt{line-height:1.25}
.brand .brand-cn{font-size:19px;font-weight:800;letter-spacing:2px;color:var(--navy)}
.brand .brand-en{font-size:10.5px;color:#8b98ad;letter-spacing:1.6px;text-transform:uppercase}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav>li{position:relative}
.main-nav>li>a{display:flex;align-items:center;gap:4px;padding:10px 13px;font-size:15px;font-weight:600;color:var(--navy-2);border-radius:8px;white-space:nowrap}
.main-nav>li>a .arrow{font-size:10px;color:#94a3b8;transition:transform .25s}
.main-nav>li:hover>a{color:var(--orange)}
.main-nav>li:hover>a .arrow{transform:rotate(180deg)}
.main-nav>li.active>a{color:var(--orange)}
.dropdown{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(8px);background:#fff;border-radius:12px;box-shadow:var(--shadow-lg);padding:10px;min-width:190px;opacity:0;visibility:hidden;transition:all .28s}
.main-nav>li:hover .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown a{display:block;padding:9px 14px;border-radius:8px;font-size:14px;color:var(--text);white-space:nowrap}
.dropdown a:hover{background:#fff4ea;color:var(--orange)}
.header-cta{flex-shrink:0;display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,var(--orange),#ff9d42);color:#fff;padding:10px 20px;border-radius:999px;font-weight:700;font-size:14.5px;box-shadow:0 8px 20px rgba(255,122,26,.35)}
.header-cta .ico{font-size:16px}
.header-cta:hover{transform:translateY(-1px);box-shadow:0 12px 26px rgba(255,122,26,.45);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.nav-toggle span{width:24px;height:2.5px;background:var(--navy);border-radius:2px;transition:.3s}

/* ---------- Hero 轮播 ---------- */
.hero{position:relative;height:min(78vh,680px);min-height:520px;background:var(--navy);overflow:hidden}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease;pointer-events:none}
.hero-slide.active{opacity:1;pointer-events:auto}
.hero-slide .bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1.06);transition:transform 7s linear}
.hero-slide.active .bg{transform:scale(1)}
.hero-slide::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,15,30,.86) 0%,rgba(7,15,30,.55) 45%,rgba(7,15,30,.15) 80%)}
.hero-caption{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;color:#fff}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,122,26,.16);border:1px solid rgba(255,154,61,.5);color:var(--orange-2);font-size:13px;font-weight:600;letter-spacing:2px;padding:6px 16px;border-radius:999px;width:fit-content;margin-bottom:22px}
/* 轮播标题原为 h1，因每页须唯一故降为 h2，此处让 h2 继承原有字号/字重，视觉效果完全不变 */
.hero-caption h1,.hero-caption h2{font-size:clamp(30px,4.6vw,54px);font-weight:800;line-height:1.22;letter-spacing:1px;max-width:760px}
.hero-caption h1 em,.hero-caption h2 em{font-style:normal;color:var(--orange-2)}
/* 屏幕阅读器/AI 可读取，但视觉隐藏：用于承载页面唯一的 h1 主标题 */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.hero-caption p{margin-top:18px;font-size:clamp(14px,1.4vw,17px);color:#c6d2e4;max-width:640px}
.hero-actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 30px;border-radius:999px;font-size:15px;font-weight:700;transition:.28s}
.btn-primary{background:linear-gradient(135deg,var(--orange),#ff9d42);color:#fff;box-shadow:0 10px 26px rgba(255,122,26,.4)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,122,26,.5);color:#fff}
.btn-ghost{border:1.5px solid rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff}
.btn-line{border:1.5px solid var(--orange);color:var(--orange)}
.btn-line:hover{background:var(--orange);color:#fff}
.hero-dots{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.hero-dots button{width:34px;height:5px;border-radius:3px;background:rgba(255,255,255,.32);transition:.3s}
.hero-dots button.active{background:var(--orange);width:52px}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.3);color:#fff;font-size:18px;display:flex;align-items:center;justify-content:center;background:rgba(10,21,38,.3);transition:.3s}
.hero-arrow:hover{background:var(--orange);border-color:var(--orange)}
.hero-arrow.prev{left:22px}.hero-arrow.next{right:22px}

/* ---------- 数字统计条 ---------- */
.stats-band{background:linear-gradient(120deg,var(--navy) 0%,var(--navy-3) 60%,#1a3a66 100%);position:relative;overflow:hidden}
.stats-band::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 200px at 85% 20%,rgba(47,125,246,.18),transparent 60%),radial-gradient(500px 220px at 10% 90%,rgba(255,122,26,.12),transparent 60%)}
.stats-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:46px 0}
.stat{text-align:center;color:#fff;padding:10px 8px;position:relative}
.stat+.stat::before{content:"";position:absolute;left:0;top:18%;height:64%;width:1px;background:rgba(255,255,255,.12)}
.stat .num{font-size:clamp(30px,3.4vw,42px);font-weight:800;color:#fff;line-height:1.15}
.stat .num em{font-style:normal;font-size:.55em;color:var(--orange-2);margin-left:2px}
.stat .lab{margin-top:6px;font-size:13.5px;color:#9fb0ca;letter-spacing:1px}

/* ---------- 通用 Section ---------- */
.section{padding:84px 0}
.section.alt{background:var(--bg)}
.section-head{text-align:center;max-width:760px;margin:0 auto 52px}
.section-head .kicker{display:inline-flex;align-items:center;gap:10px;color:var(--orange);font-weight:700;font-size:13.5px;letter-spacing:3px;text-transform:uppercase;margin-bottom:12px}
.section-head .kicker::before,.section-head .kicker::after{content:"";width:26px;height:2px;background:var(--orange);opacity:.6}
.section-head h2{font-size:clamp(26px,3vw,36px);font-weight:800;color:var(--navy);letter-spacing:1px;line-height:1.35}
.section-head p{margin-top:14px;color:var(--text);font-size:15.5px}
.section-head.left{text-align:left;margin-left:0}

/* ---------- 首页：关于分栏 ---------- */
.about-split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.about-media{position:relative}
.about-media .main-img{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;object-fit:cover;aspect-ratio:4/3}
.about-media .badge-card{position:absolute;right:-18px;bottom:-24px;background:linear-gradient(135deg,var(--navy),var(--navy-3));color:#fff;border-radius:14px;padding:20px 26px;box-shadow:var(--shadow-lg);text-align:center}
.about-media .badge-card .num{font-size:34px;font-weight:800;color:var(--orange-2)}
.about-media .badge-card .lab{font-size:12.5px;color:#aebad0;margin-top:2px;letter-spacing:1px}
.about-copy h2{font-size:clamp(24px,2.8vw,34px);font-weight:800;color:var(--navy);line-height:1.4}
.about-copy .lead{margin:18px 0 10px;color:var(--text)}
.about-copy .em{color:var(--orange);font-weight:700}
.point-list{margin-top:22px;display:grid;gap:14px}
.point-list li{position:relative;padding-left:38px;font-size:14.5px;color:var(--text)}
.point-list li strong{color:var(--navy)}
.point-list .pt-ico{position:absolute;left:0;top:2px;width:26px;height:26px;border-radius:8px;background:#fff2e6;color:var(--orange);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}
.about-copy .actions{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 品牌带 ---------- */
.brand-band{background:var(--navy);padding:40px 0}
.brand-band .container{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.brand-cell{display:flex;align-items:center;gap:16px;color:#fff;padding:18px 22px;border:1px solid rgba(255,255,255,.1);border-radius:14px;background:rgba(255,255,255,.03);transition:.3s}
.brand-cell:hover{background:rgba(255,122,26,.1);border-color:rgba(255,122,26,.5);transform:translateY(-3px)}
.brand-cell .b-logo{width:54px;height:54px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;flex-shrink:0}
.brand-cell:nth-child(1) .b-logo{background:#0b2d6b;color:#7fb1ff}
.brand-cell:nth-child(2) .b-logo{background:#7a1f04;color:#ffb08a}
.brand-cell:nth-child(3) .b-logo{background:#5c1230;color:#ff9ec4}
.brand-cell h3{font-size:16.5px;font-weight:700}
.brand-cell p{font-size:12.5px;color:#93a4c0;margin-top:3px}
.brand-cell .go{margin-left:auto;color:var(--orange-2);font-size:18px}

/* ---------- 产品精选卡片 ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod-card{background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);transition:.35s;display:flex;flex-direction:column}
.prod-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.prod-card .thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:#eef2f8}
.prod-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.prod-card:hover .thumb img{transform:scale(1.07)}
.prod-card .flag{position:absolute;top:12px;left:12px;background:rgba(10,21,38,.82);backdrop-filter:blur(4px);color:#ffd9b8;font-size:11px;font-weight:700;letter-spacing:1px;padding:4px 10px;border-radius:6px}
.prod-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.prod-card h3{font-size:16.5px;font-weight:700;color:var(--navy);line-height:1.45}
.prod-card .desc{margin-top:10px;font-size:13.5px;color:var(--text);flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.prod-card .more{margin-top:16px;display:inline-flex;align-items:center;gap:6px;color:var(--orange);font-weight:700;font-size:13.5px}
.prod-card .more i{font-style:normal;transition:transform .3s}
.prod-card:hover .more i{transform:translateX(4px)}
.center-more{text-align:center;margin-top:44px}

/* ---------- 产品页筛选 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:44px}
.filter-bar button{padding:9px 22px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--text);font-size:14px;font-weight:600;transition:.25s}
.filter-bar button:hover{border-color:var(--orange);color:var(--orange)}
.filter-bar button.active{background:linear-gradient(135deg,var(--orange),#ff9d42);border-color:transparent;color:#fff;box-shadow:0 8px 18px rgba(255,122,26,.3)}
.prod-page-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.prod-card.wide .thumb{aspect-ratio:16/10}
.spec-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.spec-chips span{font-size:11.5px;background:#f1f5fb;color:#5b6b85;border:1px solid var(--line);padding:3px 9px;border-radius:6px}

/* ---------- 页内 Banner ---------- */
.page-banner{position:relative;background:var(--navy);color:#fff;padding:92px 0 78px;overflow:hidden}
.page-banner .bgimg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.28}
.page-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,15,30,.9),rgba(13,32,60,.72))}
.page-banner .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#9fb0ca;margin-bottom:14px}
.crumb a{color:#c8d4e6}
.crumb a:hover{color:var(--orange-2)}
.page-banner h1{font-size:clamp(28px,3.6vw,42px);font-weight:800;letter-spacing:1px}
.page-banner .sub{margin-top:12px;color:#b8c6dc;font-size:15px;max-width:720px}
.page-banner .hl{color:var(--orange-2);font-weight:700}

/* ---------- 微纳加工中心页 ---------- */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;transition:.3s;position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;top:0;left:0;width:44px;height:4px;background:linear-gradient(90deg,var(--orange),var(--orange-2));border-radius:0 0 4px 0;transition:width .4s}
.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.feature-card:hover::before{width:100%}
.feature-card .f-ico{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,#0e1f3a,#1d3b6b);color:#ffd9b8;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:18px}
.feature-card h3{font-size:17px;font-weight:700;color:var(--navy);margin-bottom:10px}
.feature-card p{font-size:13.8px;color:var(--text)}
.spec-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.spec-table th,.spec-table td{padding:14px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.spec-table th{background:var(--navy);color:#fff;font-weight:600;letter-spacing:1px}
.spec-table td:first-child{font-weight:700;color:var(--navy);width:200px;background:#f8fafd}
.spec-table tr:last-child td{border-bottom:none}
.camera-split{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.camera-card{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
.camera-card .cam-head{padding:18px 24px;background:linear-gradient(120deg,var(--navy),var(--navy-3));color:#fff;display:flex;align-items:center;gap:12px}
.camera-card .cam-head .tag{background:rgba(255,122,26,.2);border:1px solid rgba(255,154,61,.5);color:var(--orange-2);font-size:11.5px;padding:3px 10px;border-radius:99px;font-weight:700}
.camera-card ul{padding:20px 24px 24px;display:grid;gap:10px}
.camera-card li{position:relative;padding-left:22px;font-size:14px;color:var(--text)}
.camera-card li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:2px;background:var(--orange);transform:rotate(45deg)}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery-grid img{border-radius:12px;aspect-ratio:4/3;object-fit:cover;width:100%;transition:.35s;border:1px solid var(--line)}
.gallery-grid img:hover{transform:scale(1.03);box-shadow:var(--shadow-lg)}

/* ---------- 案例页 ---------- */
.case-card{display:grid;grid-template-columns:1fr 1.15fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-bottom:34px;transition:.35s}
.case-card:nth-child(even){direction:rtl}
.case-card>*{direction:ltr}
.case-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.case-card .case-img{position:relative;min-height:300px}
.case-card .case-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.case-card .case-no{position:absolute;top:18px;left:18px;background:linear-gradient(135deg,var(--orange),#ff9d42);color:#fff;font-weight:800;font-size:13px;padding:6px 14px;border-radius:8px;letter-spacing:1px;box-shadow:0 8px 18px rgba(255,122,26,.4)}
.case-card .case-body{padding:36px 40px}
.case-card h3{font-size:21px;font-weight:800;color:var(--navy)}
.case-card .case-desc{margin-top:14px;color:var(--text);font-size:14.5px}
.case-spec{margin-top:22px;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.case-spec .kv{background:var(--bg);border-radius:10px;padding:12px 16px}
.case-spec .k{font-size:12px;color:#8b98ad;letter-spacing:.5px}
.case-spec .v{font-size:15.5px;font-weight:700;color:var(--navy);margin-top:2px}
.case-spec .v em{font-style:normal;color:var(--orange)}

/* ---------- 新闻页 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:.35s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#eef2f8}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.news-card:hover .thumb img{transform:scale(1.08)}
.news-card .body{padding:22px 22px 24px;flex:1;display:flex;flex-direction:column}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:#8b98ad}
.news-meta .cat{background:#fff2e6;color:var(--orange);font-weight:700;padding:2px 10px;border-radius:99px}
.news-card h3{margin-top:12px;font-size:16.5px;font-weight:700;color:var(--navy);line-height:1.5;flex:1}
.news-card .abs{margin-top:10px;font-size:13px;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .read{margin-top:14px;color:var(--orange);font-size:13px;font-weight:700}
/* 文章弹窗 */
.modal-mask{position:fixed;inset:0;background:rgba(7,13,26,.72);backdrop-filter:blur(6px);z-index:200;display:none;align-items:flex-start;justify-content:center;padding:5vh 18px;overflow-y:auto}
.modal-mask.open{display:flex}
.modal-box{background:#fff;border-radius:18px;max-width:860px;width:100%;padding:44px 50px;position:relative;animation:pop .35s ease}
@keyframes pop{from{opacity:0;transform:translateY(24px) scale(.98)}to{opacity:1;transform:none}}
.modal-close{position:absolute;top:16px;right:18px;width:38px;height:38px;border-radius:50%;background:var(--bg);font-size:17px;color:var(--text);display:flex;align-items:center;justify-content:center;transition:.25s}
.modal-close:hover{background:var(--orange);color:#fff}
.modal-box h2{font-size:24px;font-weight:800;color:var(--navy);padding-right:40px;line-height:1.5}
.modal-box .meta{margin:12px 0 22px;font-size:13px;color:#8b98ad;display:flex;gap:14px;flex-wrap:wrap}
.modal-box .article{color:#374151;font-size:15px;line-height:1.95}
.modal-box .article h4{font-size:16.5px;color:var(--navy);margin:22px 0 10px;padding-left:12px;border-left:4px solid var(--orange)}
.modal-box .article p{margin-bottom:10px}
.modal-box .article ul{margin:6px 0 14px 4px}
.modal-box .article li{position:relative;padding-left:20px;margin-bottom:6px}
.modal-box .article li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;background:var(--orange);border-radius:50%}
.modal-box .article figure{margin:18px 0}
.modal-box .article figure img{border-radius:10px;margin:0 auto;border:1px solid var(--line)}
.modal-box .article figcaption{text-align:center;font-size:12.5px;color:#8b98ad;margin-top:8px}

/* ---------- 关于我们 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.value-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 24px;text-align:center;transition:.3s}
.value-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(255,122,26,.4)}
.value-card .v-ico{width:60px;height:60px;margin:0 auto 16px;border-radius:50%;background:linear-gradient(135deg,#fff2e6,#ffe3c7);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--orange)}
.value-card h3{font-size:17px;color:var(--navy);font-weight:800;letter-spacing:2px}
.value-card p{margin-top:8px;font-size:13.2px;color:var(--text)}
.field-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.field-cell{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 20px;display:flex;gap:14px;align-items:center;transition:.3s}
.field-cell:hover{border-color:var(--orange);box-shadow:var(--shadow)}
.field-cell .f-emo{font-size:26px}
.field-cell h4{font-size:15px;color:var(--navy);font-weight:700}
.field-cell p{font-size:12.5px;color:#8b98ad;margin-top:2px}
.contact-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:stretch}
.contact-card{background:linear-gradient(135deg,var(--navy),var(--navy-3));border-radius:var(--radius);color:#fff;padding:40px 42px;position:relative;overflow:hidden}
.contact-card::before{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(255,122,26,.25),transparent 70%)}
.contact-card h3{font-size:21px;font-weight:800;margin-bottom:26px}
.contact-line{display:flex;gap:14px;padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.14);font-size:14.5px}
.contact-line:last-of-type{border-bottom:none}
.contact-line .c-ico{width:38px;height:38px;flex-shrink:0;border-radius:10px;background:rgba(255,255,255,.09);display:flex;align-items:center;justify-content:center;font-size:16px}
.contact-line .k{color:#8fa1bd;font-size:12px;letter-spacing:1px}
.contact-line .v{font-weight:600;color:#f2f6fc;margin-top:2px}
.contact-line .v a:hover{color:var(--orange-2)}
.qr-side{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;box-shadow:var(--shadow)}
.qr-side img{width:200px;border-radius:12px;border:1px solid var(--line)}
.qr-side h4{margin-top:18px;font-size:16px;color:var(--navy)}
.qr-side p{font-size:12.8px;color:#8b98ad;margin-top:6px}
.msg-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px 40px;box-shadow:var(--shadow)}
.msg-form h3{font-size:19px;font-weight:800;color:var(--navy);margin-bottom:6px}
.msg-form .tip{font-size:13px;color:#8b98ad;margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--navy);margin-bottom:7px}
.form-group input,.form-group textarea,.form-group select{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:11px 14px;font-size:14px;font-family:inherit;color:var(--ink);outline:none;transition:.25s;background:#fbfcfe}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--orange);background:#fff;box-shadow:0 0 0 4px rgba(255,122,26,.12)}
.form-group textarea{min-height:110px;resize:vertical}
/* 表单提交反馈（成功 / 警告 / 必填提示） */
.form-note{display:none;margin-top:14px;padding:12px 16px;border-radius:10px;font-size:13.5px;line-height:1.75}
.form-note.show{display:block}
.form-note strong{font-weight:700}
.form-note a{text-decoration:underline}
.form-note-ok{background:#e8f9ef;color:#0f8a4b;border:1px solid #b8ecd0}
.form-note-ok a{color:#0f8a4b}
.form-note-warn{background:#fff5e9;color:#b45309;border:1px solid #fbd9a8}
.form-note-warn a{color:#b45309}
.form-ok{display:none;margin-top:14px;background:#e8f9ef;color:#0f8a4b;border:1px solid #b8ecd0;padding:12px 16px;border-radius:10px;font-size:13.5px}
.form-ok.show{display:block}
/* 提交中：按钮不可点击 */
button[type="submit"]:disabled{opacity:.7;cursor:not-allowed;transform:none!important;box-shadow:none!important}

/* ---------- CTA 条 ---------- */
.cta-band{background:linear-gradient(115deg,#0a1526 0%,#13294b 55%,#1d3f70 100%);position:relative;overflow:hidden;padding:58px 0}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 240px at 90% 30%,rgba(255,122,26,.16),transparent 65%)}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:30px;color:#fff;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);font-weight:800}
.cta-inner p{margin-top:8px;color:#a9bad4;font-size:14.5px}
.cta-phone{display:flex;align-items:center;gap:16px}
.cta-phone .ring{width:58px;height:58px;border-radius:50%;background:linear-gradient(135deg,var(--orange),#ff9d42);display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 10px 26px rgba(255,122,26,.45);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(255,122,26,.45)}55%{box-shadow:0 0 0 16px rgba(255,122,26,0)}}
.cta-phone .lab{font-size:12.5px;color:#9fb0ca;letter-spacing:1px}
.cta-phone .tel{font-size:24px;font-weight:800;letter-spacing:1px;color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:#060d1a;color:#8fa0ba;font-size:13.5px}
.footer-main{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr .8fr;gap:36px;padding:64px 0 46px}
.site-footer h4{color:#fff;font-size:15.5px;font-weight:700;margin-bottom:20px;letter-spacing:1px;position:relative;padding-bottom:12px}
.site-footer h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:3px;background:var(--orange);border-radius:2px}
.f-about p{line-height:1.85}
.f-contact{margin-top:16px;display:grid;gap:8px}
.f-contact li{display:flex;gap:8px}
.f-contact .fc-ico{color:var(--orange-2)}
.f-links{display:grid;gap:9px}
.f-links a:hover{color:var(--orange-2)}
.f-nav2{margin-top:4px;display:flex;flex-wrap:wrap;gap:6px 0}
.f-nav2 a{font-size:12.5px;color:#7788a3}
.f-nav2 a:hover{color:var(--orange-2)}
.f-shop{display:flex;gap:12px;margin-top:14px}
.f-shop a{flex:1;text-align:center;border:1px solid rgba(255,255,255,.14);border-radius:10px;padding:10px 6px;color:#c6d2e4;font-size:12.5px;transition:.25s}
.f-shop a:hover{border-color:var(--orange);color:var(--orange-2)}
.f-qr{text-align:center}
.f-qr img{width:132px;margin:0 auto;border-radius:10px}
.f-qr p{margin-top:10px;font-size:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:12.5px;color:#5f7089}
.footer-bottom .container{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.footer-bottom a:hover{color:var(--orange-2)}
.friend-links{padding:0 0 26px;font-size:12.5px;color:#5f7089;line-height:2}
.friend-links a{color:#7788a3;margin-right:14px}
.friend-links a:hover{color:var(--orange-2)}

/* ---------- 悬浮工具条 ---------- */
.float-tools{position:fixed;right:20px;bottom:110px;z-index:90;display:flex;flex-direction:column;gap:10px}
.float-tools a,.float-tools button{width:48px;height:48px;border-radius:12px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:10.5px;color:var(--navy);gap:2px;transition:.28s;position:relative}
.float-tools .f-big{font-size:17px;line-height:1}
.float-tools a:hover,.float-tools button:hover{background:var(--orange);color:#fff;border-color:var(--orange);transform:translateY(-3px)}
.float-tools .qr-pop{position:absolute;right:60px;top:0;width:150px;background:#fff;border-radius:10px;box-shadow:var(--shadow-lg);padding:8px;opacity:0;visibility:hidden;transition:.25s;pointer-events:none}
.float-tools li{position:relative}
.float-tools li:hover .qr-pop{opacity:1;visibility:visible}
#toTop{opacity:0;visibility:hidden}
#toTop.show{opacity:1;visibility:visible}

/* ---------- 滚动动效 ---------- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}.reveal.d4{transition-delay:.4s}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 5% 20px;box-shadow:0 20px 40px rgba(10,21,38,.15);gap:2px}
  .main-nav.open{display:flex}
  .main-nav>li>a{padding:13px 10px;border-bottom:1px solid var(--line);border-radius:0;justify-content:space-between}
  .dropdown{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;padding:0 0 8px 14px;display:none;min-width:0}
  .main-nav>li:hover .dropdown{display:block;transform:none}
  .main-nav>li.drop-open .dropdown{display:block}
  .nav-toggle{display:flex}
  .header-cta{display:none}
  .about-split,.camera-split,.contact-wrap{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .prod-page-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid,.feature-grid,.gallery-grid{grid-template-columns:repeat(2,1fr)}
  .value-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat+.stat::before{display:none}
  .brand-band .container{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr 1fr}
  .case-card{grid-template-columns:1fr}
  .case-card:nth-child(even){direction:ltr}
  .case-card .case-img{min-height:240px}
  .modal-box{padding:32px 24px}
}
@media (max-width:640px){
  .topbar .container{justify-content:center}
  .topbar-right{display:none}
  .topbar-left{font-size:11px;text-align:center}
  .header-inner{height:60px;gap:8px}
  .brand img{height:34px}
  .brand .brand-cn{font-size:16px;letter-spacing:1px}
  .brand .brand-en{font-size:9px;letter-spacing:1px}
  .main-nav>li>a{font-size:14.5px}
  .hero{min-height:480px;height:72vh}
  .prod-grid,.prod-page-grid,.news-grid,.feature-grid,.gallery-grid,.form-row,.case-spec{grid-template-columns:1fr}
  .value-grid{grid-template-columns:1fr 1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:8px}
  .section{padding:60px 0}
  .footer-main{grid-template-columns:1fr}
  .contact-card{padding:30px 24px}
  .hero-arrow{display:none}
}

/* ============================================================
   产品中心：品牌分类下拉 + 产品卡/详情弹窗
   ============================================================ */
.dropdown.mega{width:860px;min-width:0;padding:20px 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:8px 24px}
.dd-brand h5{font-size:12.5px;letter-spacing:1.5px;color:var(--orange);margin-bottom:10px;padding-bottom:9px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:8px}
.dd-brand h5 em{font-style:normal;font-size:11px;color:#8b98ad;letter-spacing:0;margin-left:auto}
.dd-brand a{display:block;padding:6px 10px;border-radius:8px;font-size:13px;color:#6b7a92;line-height:1.45}
.dd-brand a b{display:block;color:var(--navy);font-weight:700;font-size:13.5px;margin-bottom:1px}
.dd-brand a.dd-more{margin-top:8px;color:var(--orange);font-weight:700;font-size:12.5px}
.dd-brand a:hover{background:#fff4ea;color:var(--orange)}
.dd-brand a:hover b{color:var(--orange)}
.dd-full{grid-column:1/-1;border-top:1px solid var(--line);margin-top:4px;padding-top:14px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.dd-full .lb{font-size:12px;color:#8b98ad;letter-spacing:1px}
.dd-full a{font-size:12.8px;color:var(--navy);border:1px solid var(--line);padding:5px 13px;border-radius:99px;background:#fbfcfe}
.dd-full a:hover{border-color:var(--orange);color:var(--orange);background:#fff4ea}

/* 二级筛选 */
.filter-bar.sub{margin-top:-24px;margin-bottom:36px}
.filter-bar.sub button{padding:7px 16px;font-size:13px;background:#fff}

/* 产品卡计数 */
.filter-bar button .n{font-size:11.5px;opacity:.7;margin-left:4px}

/* 详情弹窗 */
.p-modal-head{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;margin-bottom:24px}
.p-modal-head .big-img{border-radius:12px;border:1px solid var(--line);overflow:hidden;background:#eef2f8}
.p-modal-head .big-img img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:.4s}
.p-modal-head .big-img:hover img{transform:scale(1.04)}
.p-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px}
.p-thumbs img{aspect-ratio:1;object-fit:cover;border-radius:8px;border:1.5px solid var(--line);cursor:pointer;transition:.25s}
.p-thumbs img:hover,.p-thumbs img.on{border-color:var(--orange)}
.p-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.p-tags span{font-size:12px;font-weight:700;padding:4px 12px;border-radius:99px}
.p-tags .b-parker{background:#e8f1ff;color:#14509e}
.p-tags .b-harmonic{background:#ffe9f1;color:#a41250}
.p-tags .b-apex{background:#ffeee2;color:#a4450a}
.p-tags .c-cat{background:#f1f5fb;color:#5b6b85}
.p-gallery{margin-top:26px}
.p-gallery h5{font-size:14.5px;color:var(--navy);margin-bottom:12px;padding-left:12px;border-left:4px solid var(--orange)}
.p-gallery .p-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.p-gallery img{border-radius:10px;border:1px solid var(--line);width:100%;aspect-ratio:4/3;object-fit:cover}
.p-cta{margin-top:26px;background:linear-gradient(120deg,var(--navy),var(--navy-3));color:#fff;border-radius:12px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.p-cta strong{font-size:16px}
.p-cta p{font-size:13px;color:#9fb0ca;margin-top:3px}

@media (max-width:1080px){
  .dropdown.mega{width:100%;grid-template-columns:1fr;gap:16px}
  .p-modal-head{grid-template-columns:1fr}
}
@media (max-width:640px){
  .p-gallery .p-grid{grid-template-columns:1fr 1fr}
  .p-thumbs{grid-template-columns:repeat(4,1fr)}
}

/* 修复：子类筛选 active 状态 */
.filter-bar.sub button.active{background:linear-gradient(135deg,var(--orange),#ff9d42);border-color:transparent;color:#fff;box-shadow:0 8px 18px rgba(255,122,26,.3)}

/* 中等屏幕下拉收窄 */
@media (max-width:1200px){ .dropdown.mega{width:720px;gap:8px 16px} }

/* ============================================================
   新闻详情页 · Article Detail
   ============================================================ */
.art-top{background:linear-gradient(135deg,var(--navy),var(--navy-3));padding:20px 0;margin-top:0}
.art-top .crumb{color:#aebad0;font-size:13.5px}
.art-top .crumb a{color:#fff}
.art-top .crumb a:hover{color:var(--orange-2)}
.art-top .crumb span{color:var(--orange-2)}

.art-wrap{max-width:900px;margin:0 auto;background:var(--white);border:1px solid var(--line);
         border-radius:var(--radius);padding:52px 62px;box-shadow:var(--shadow)}
.art-title{font-size:32px;font-weight:800;color:var(--navy);line-height:1.4;letter-spacing:-.3px}
.art-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:18px;
          padding-bottom:22px;border-bottom:1px solid var(--line);font-size:13px;color:#8b98ad}
.art-meta .tag{background:#fff4ea;color:var(--orange);border-radius:20px;padding:4px 14px;
               font-weight:700;font-size:12.5px}
.art-cover{width:100%;border-radius:12px;margin:26px 0 6px;display:block}

.art-body{margin-top:26px;font-size:16px;line-height:1.95;color:var(--text)}
.art-body>*:first-child{margin-top:0}
.art-body p{margin:16px 0}
.art-body h4{font-size:18px;font-weight:800;color:var(--navy);margin:34px 0 14px;
             padding-left:14px;border-left:4px solid var(--orange);line-height:1.5}
.art-body h4:first-of-type{margin-top:8px}
.art-body ul{margin:16px 0;padding:0;list-style:none}
.art-body ul li{position:relative;padding-left:20px;margin:9px 0}
.art-body ul li::before{content:"";position:absolute;left:4px;top:.72em;width:6px;height:6px;
                        border-radius:50%;background:var(--orange)}
.art-body strong{color:var(--navy);font-weight:700}
.art-body figure.art-img{margin:24px 0;text-align:center}
.art-body figure.art-img img{max-width:100%;height:auto;border-radius:10px;
                             border:1px solid var(--line);box-shadow:var(--shadow)}
.art-body a{color:var(--blue)}

.art-back{margin-top:42px;padding-top:28px;border-top:1px solid var(--line)}

.art-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:900px;margin:22px auto 0}
.art-nav .an-item{display:block;background:var(--white);border:1px solid var(--line);
                  border-radius:12px;padding:16px 20px;text-decoration:none;transition:.25s}
.art-nav .an-item.next{text-align:right}
.art-nav a.an-item:hover{border-color:var(--orange);box-shadow:var(--shadow);
                         transform:translateY(-2px)}
.art-nav .an-item span{display:block;font-size:12px;color:#8b98ad;margin-bottom:4px}
.art-nav .an-item strong{display:block;font-size:14.5px;font-weight:600;color:var(--navy);line-height:1.5}
.art-nav a.an-item:hover strong{color:var(--orange)}
.art-nav .an-item.none{background:#f8fafc}
.art-nav .an-item.none strong{color:#a9b4c6;font-weight:500}
.art-nav a.an-item.none:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-2px);background:#fff}
.art-nav a.an-item.none:hover strong{color:var(--orange)}

@media (max-width:1080px){
  .art-wrap{padding:38px 32px}
  .art-title{font-size:26px}
}
@media (max-width:640px){
  .art-wrap{padding:26px 20px}
  .art-title{font-size:22px}
  .art-body{font-size:15.5px;line-height:1.9}
  .art-nav{grid-template-columns:1fr}
  .art-nav .an-item.next{text-align:left}
}

/* 新闻卡片作为链接时的样式重置 */
a.news-card{text-decoration:none;color:inherit}
a.news-card:hover h3{color:var(--orange)}
a.news-card h3{transition:color .25s}

/* ============================================================
   产品详情页 · Product Detail
   ============================================================ */
.pd-wrap{max-width:1180px;margin:0 auto;background:var(--white);border:1px solid var(--line);
         border-radius:var(--radius);padding:44px 48px;box-shadow:var(--shadow)}
.pd-head{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:start}
.pd-media{position:relative}
.pd-media .big-img{border-radius:12px;border:1px solid var(--line);overflow:hidden;background:#eef2f8}
.pd-media .big-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.pd-info h1{font-size:29px;font-weight:800;color:var(--navy);line-height:1.4;margin:12px 0 0}
.pd-intro{margin-top:16px;font-size:15px;line-height:1.85;color:var(--text)}
.pd-btn{margin-top:24px;display:inline-flex;align-items:center;gap:8px}
.pd-wrap .spec-table{margin-top:38px}
.pd-body{margin-top:34px;padding-top:28px;border-top:1px solid var(--line)}
.pd-body p{font-size:15.5px;line-height:1.95;color:var(--text);margin:14px 0}
.pd-body p:first-child{margin-top:0}
.pd-back{margin-top:40px;padding-top:28px;border-top:1px solid var(--line);display:flex;gap:12px;flex-wrap:wrap}

@media (max-width:1080px){
  .pd-wrap{padding:32px 26px}
  .pd-head{grid-template-columns:1fr;gap:26px}
  .pd-info h1{font-size:24px}
}
@media (max-width:640px){
  .pd-wrap{padding:22px 16px}
  .pd-info h1{font-size:20px}
  .pd-back .btn{flex:1;justify-content:center}
}

/* ============================================================
   品牌栏目列表页 · Brand Category
   ============================================================ */
.brand-top{display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center;
           background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
           padding:24px 28px;margin-bottom:36px;box-shadow:var(--shadow)}
.brand-logo{width:118px;height:118px;flex-shrink:0;border-radius:10px;object-fit:contain;
            background:#f5f7fb;border:1px solid var(--line);padding:10px}
.brand-top h2{font-size:24px;font-weight:800;color:var(--navy);margin-bottom:6px}
.brand-top p{font-size:14.5px;color:var(--text);line-height:1.8}
.brand-top .bstat{display:flex;gap:22px;margin-top:12px;flex-wrap:wrap}
.brand-top .bstat div{font-size:13px;color:#8b98ad}
.brand-top .bstat b{display:block;font-size:22px;color:var(--orange);font-weight:800}

.cat-block{margin-bottom:44px}
.cat-block>h3{font-size:19px;font-weight:800;color:var(--navy);margin-bottom:18px;
              padding-left:14px;border-left:4px solid var(--orange);display:flex;align-items:center;gap:10px}
.cat-block>h3 em{font-style:normal;font-size:12.5px;font-weight:700;color:#8b98ad}
.brand-switch{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:8px}
.brand-switch a{padding:9px 20px;border-radius:99px;border:1px solid var(--line);background:#fff;
                font-size:14px;font-weight:600;color:var(--navy);text-decoration:none;transition:.25s}
.brand-switch a:hover{border-color:var(--orange);color:var(--orange)}
.brand-switch a.cur{background:linear-gradient(135deg,var(--orange),#ff9d42);color:#fff;border-color:transparent}

@media (max-width:640px){
  .brand-top{grid-template-columns:1fr;text-align:center;justify-items:center;padding:22px 18px}
  .brand-top h2,.brand-top .bstat{justify-content:center}
}

/* 页脚链接数量标记 */
.f-links a{display:flex;align-items:center;gap:8px}
.f-links em.fn{font-style:normal;font-size:11px;font-weight:700;color:#8fa1bd;background:rgba(255,255,255,.08);
               border-radius:20px;padding:1px 8px;min-width:22px;text-align:center}
.f-links a:hover em.fn{background:var(--orange);color:#fff}

/* 产品卡片作为链接时的样式重置 */
a.prod-card{text-decoration:none;color:inherit}
a.prod-card:hover h3{color:var(--orange)}
a.prod-card h3{transition:color .25s}

/* ---------- 网站地图页 · Sitemap Page ---------- */
.sm-intro{background:var(--white);border:1px solid var(--line);border-left:4px solid var(--orange);
          border-radius:10px;padding:14px 18px;margin-bottom:34px;color:var(--text);font-size:15px}
.sm-intro a{color:var(--orange);font-weight:700}
.sm-group{margin-bottom:34px}
.sm-group>h3{font-size:19px;font-weight:800;color:var(--navy);margin-bottom:16px;
             padding-left:12px;border-left:4px solid var(--orange);line-height:1.3}
.sm-group>h3 em{font-style:normal;font-size:12.5px;color:#8b98ad;font-weight:600;margin-left:9px}
.sm-links{display:grid;grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:10px}
.sm-links a{display:block;background:var(--white);border:1px solid var(--line);border-radius:10px;
            padding:11px 15px;color:var(--text);font-size:14.5px;line-height:1.5;text-decoration:none;
            transition:.22s}
.sm-links a:hover{border-color:var(--orange);color:var(--orange);box-shadow:var(--shadow);transform:translateY(-2px)}
@media (max-width:640px){
  .sm-links{grid-template-columns:1fr}
}

/* ============================================================
   常见问题 FAQ（用户可读 + 供 AI 问答直接引用）
   ============================================================ */
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;max-width:1080px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 24px;transition:.3s}
.faq-item:hover{border-color:var(--orange);box-shadow:var(--shadow)}
.faq-q{font-size:15.5px;font-weight:700;color:var(--navy);margin-bottom:9px;display:flex;gap:10px;align-items:flex-start;line-height:1.6}
.faq-q::before{content:"Q";flex-shrink:0;width:22px;height:22px;border-radius:6px;background:var(--orange);
               color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:3px}
.faq-a{font-size:13.5px;line-height:1.95;color:#5c6a80;padding-left:32px}
@media (max-width:860px){
  .faq-grid{grid-template-columns:1fr}
  .faq-a{padding-left:32px}
}

/* ============================================================
   404 页面 —— 延续「深空蓝 + 橙色动能」工业科技风
   ============================================================ */
.e404-wrap{position:relative;background:var(--navy);overflow:hidden;padding:78px 0 92px}
.e404-bg{position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(760px 420px at 50% -8%,rgba(47,125,246,.24),transparent 62%),
    radial-gradient(560px 360px at 88% 108%,rgba(255,122,26,.17),transparent 60%),
    linear-gradient(180deg,#0a1526 0%,#0e1f3a 52%,#0a1526 100%)}
.e404-bg::after{content:"";position:absolute;inset:0;opacity:.42;
  background-image:linear-gradient(rgba(120,160,220,.075) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(120,160,220,.075) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(circle at 50% 34%,#000 0%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 50% 34%,#000 0%,transparent 76%)}
.e404-inner{position:relative;z-index:2;text-align:center}

/* ---- 404 数字（中间的 0 是旋转的谐波减速机齿轮感圆环）---- */
.e404-code{display:flex;align-items:center;justify-content:center;gap:clamp(4px,1.2vw,14px);
  font-size:clamp(78px,15vw,168px);font-weight:800;line-height:.92;letter-spacing:-.02em;
  font-family:"Helvetica Neue",Arial,var(--font);user-select:none}
.e404-code .d{display:block;background:linear-gradient(180deg,#ffffff 18%,#9fb6d6 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 8px 26px rgba(120,170,255,.32))}
.e404-code .d-zero{display:inline-flex;align-items:center;justify-content:center;
  width:.92em;height:.92em;font-size:1em;background:none;-webkit-text-fill-color:currentColor;
  color:var(--orange);filter:drop-shadow(0 8px 30px rgba(255,122,26,.5))}
.e404-code .d-zero svg{width:100%;height:100%;display:block}
@media (prefers-reduced-motion:reduce){
  .e404-code .d-zero svg animate{display:none}
}

/* ---- 文案 ---- */
.e404-title{margin-top:26px;font-size:clamp(21px,3vw,31px);font-weight:800;color:#fff;letter-spacing:1px}
.e404-sub{margin:14px auto 0;max-width:640px;color:#a9b9d0;font-size:14.6px;line-height:2}
.e404-sub br{display:block}

/* ---- 按钮组 ---- */
.e404-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:32px}
.e404-btn{display:inline-flex;align-items:center;gap:9px;padding:13px 27px;border-radius:999px;
  font-size:14.5px;font-weight:700;color:#dbe5f3;background:rgba(255,255,255,.07);
  border:1px solid rgba(160,190,235,.26);backdrop-filter:blur(6px);transition:.28s}
.e404-btn svg{width:17px;height:17px;flex-shrink:0}
.e404-btn:hover{background:rgba(255,255,255,.14);border-color:rgba(255,160,90,.6);
  color:#fff;transform:translateY(-2px)}
.e404-btn-primary{background:linear-gradient(135deg,var(--orange),#ff9d42);border-color:transparent;
  color:#fff;box-shadow:0 12px 30px rgba(255,122,26,.4)}
.e404-btn-primary:hover{color:#fff;box-shadow:0 16px 38px rgba(255,122,26,.55)}

/* ---- 常被查找的产品入口 ---- */
.e404-cats{margin-top:64px;text-align:left}
.e404-cats-hd{display:flex;align-items:center;gap:13px;justify-content:center;margin-bottom:26px}
.e404-hl{width:5px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,var(--orange),var(--orange-2));flex-shrink:0}
.e404-cats-hd h2{font-size:17.5px;font-weight:800;color:#fff;letter-spacing:.6px}
.e404-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.e404-card{display:block;background:rgba(255,255,255,.045);border:1px solid rgba(150,180,225,.17);
  border-radius:var(--radius);padding:24px 21px;transition:.32s;position:relative;overflow:hidden}
.e404-card::before{content:"";position:absolute;top:0;left:0;width:40px;height:3px;
  background:linear-gradient(90deg,var(--orange),var(--orange-2));
  border-radius:0 0 4px 0;transition:width .42s}
.e404-card:hover{background:rgba(255,255,255,.1);border-color:rgba(255,160,90,.5);
  transform:translateY(-5px);box-shadow:0 20px 44px rgba(0,0,0,.34)}
.e404-card:hover::before{width:100%}
.e404-card .ic{width:46px;height:46px;border-radius:13px;
  background:linear-gradient(135deg,#12305c,#1d3b6b);color:#ffd2a8;
  display:flex;align-items:center;justify-content:center;margin-bottom:15px}
.e404-card .ic svg{width:23px;height:23px}
.e404-card:hover .ic{background:linear-gradient(135deg,var(--orange),#ff9d42);color:#fff}
.e404-card h3{font-size:15.5px;font-weight:700;color:#fff;margin-bottom:8px}
.e404-card p{font-size:12.8px;line-height:1.82;color:#8fa4c0;min-height:46px}
.e404-card em{display:inline-block;margin-top:13px;font-size:11.5px;font-style:normal;
  font-weight:700;color:var(--orange-2);padding:3px 11px;border-radius:999px;
  background:rgba(255,122,26,.13);border:1px solid rgba(255,122,26,.3)}

/* ---- 兜底提示 ---- */
.e404-tip{margin-top:42px;font-size:13.6px;color:#8ba0bd}
.e404-tip a{color:var(--orange-2);font-weight:600;border-bottom:1px solid rgba(255,154,61,.42);
  padding-bottom:1px}
.e404-tip a:hover{color:#fff;border-bottom-color:#fff}

/* ---- 响应式 ---- */
@media (max-width:1080px){
  .e404-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:860px){
  .e404-wrap{padding:58px 0 70px}
  .e404-grid{grid-template-columns:repeat(2,1fr);gap:13px}
  .e404-cats{margin-top:48px}
  .e404-card{padding:20px 17px}
  .e404-card p{min-height:auto}
}
@media (max-width:560px){
  .e404-sub br{display:none}
  .e404-actions{gap:10px}
  .e404-btn{flex:1 1 calc(50% - 5px);justify-content:center;padding:12px 16px;font-size:13.8px}
  .e404-btn:first-child{flex-basis:100%}
  .e404-grid{grid-template-columns:1fr}
  .e404-cats-hd h2{font-size:16px}
  .e404-tip br{display:none}
}

/* 404 页在深色底上，浮动工具条/返回顶部保持原有交互 */
body[data-page="404"] .site-header{position:sticky}