/* ==========================================================================
   锣锶紧固科技 · luosi800.com  站点样式（浅色工业风 / 钢蓝 + 铜金）
   ========================================================================== */
:root{
  --ink:#0b1b28;         /* 主文字 */
  --body:#3d4c5c;        /* 正文 */
  --muted:#7a8794;       /* 次要 */
  --line:#e3e9ef;        /* 分割线 */
  --line-2:#eef2f6;
  --bg:#ffffff;
  --surface:#f5f8fa;
  --surface-2:#eef4f8;
  --brand:#0f4460;       /* 钢蓝 */
  --brand-2:#1a6b8f;
  --brand-3:#0a3448;
  --accent:#c07a2c;      /* 铜金 */
  --accent-2:#e0a458;
  --ok:#1f8a70;
  --radius:14px;
  --shadow-s:0 2px 8px rgba(11,27,40,.05);
  --shadow-m:0 10px 30px rgba(11,27,40,.07);
  --shadow-l:0 24px 60px rgba(11,27,40,.10);
  --wrap:1220px;
  --hdr:74px;
  --font:"Microsoft YaHei","PingFang SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:15.5px;line-height:1.85;color:var(--body);
  background:var(--bg);-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--accent)}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.35;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 22px}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- 顶部工具条 ---------- */
.topbar{background:var(--brand-3);color:#c9dbe6;font-size:13px;line-height:1}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;height:38px}
.topbar a{color:#c9dbe6;display:inline-flex;align-items:center;gap:6px}
.topbar a:hover{color:#fff}
.topbar .tb-l{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.topbar .tb-r{display:flex;align-items:center;gap:16px}
.topbar svg{flex:none;opacity:.85}
.topbar .hot{color:#f0c48a;font-weight:700}

/* ---------- 页头 ---------- */
.header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;gap:26px;height:var(--hdr)}
.brand{display:flex;align-items:center;gap:11px;flex:none;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand-logo{height:46px;width:auto;flex:none;object-fit:contain}
.brand-mark{display:none}
.brand-txt b{display:block;font-size:18px;letter-spacing:.5px;color:var(--ink);line-height:1.25}
.brand-txt span{display:block;font-size:10.5px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase;line-height:1.4}

.nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav>li{position:relative}
.nav>li>a{display:flex;align-items:center;gap:5px;padding:0 13px;height:var(--hdr);font-size:15px;color:#22323f;font-weight:600;position:relative}
.nav>li>a::after{content:"";position:absolute;left:13px;right:13px;bottom:20px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .22s}
.nav>li>a:hover,.nav>li.on>a{color:var(--brand)}
.nav>li>a:hover::after,.nav>li.on>a::after{transform:scaleX(1)}
.nav .caret{width:8px;height:8px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.55}

.mega{position:absolute;top:100%;left:50%;transform:translate(-50%,10px);width:760px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-l);padding:22px;opacity:0;visibility:hidden;transition:.2s}
.nav>li:hover>.mega,.nav>li:focus-within>.mega{opacity:1;visibility:visible;transform:translate(-50%,0)}
.mega-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.mega a{display:block;padding:10px 12px;border-radius:9px;color:#33424f;font-size:14px;font-weight:600;border:1px solid transparent}
.mega a small{display:block;font-weight:400;font-size:12px;color:var(--muted);margin-top:2px}
.mega a:hover{background:var(--surface);border-color:var(--line);color:var(--brand)}
.mega-foot{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line);display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}

.hdr-act{display:flex;align-items:center;gap:10px;flex:none}
.icon-btn{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;display:grid;place-items:center;color:#33424f;transition:.18s}
.icon-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--surface)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border-radius:10px;border:1px solid transparent;font-size:14.5px;font-weight:700;transition:.18s;white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(15,68,96,.20)}
.btn-primary:hover{background:var(--brand-2);color:#fff}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#a9681f;color:#fff}
.btn-ghost{border-color:var(--line);color:#22323f;background:#fff}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn-sm{height:38px;padding:0 15px;font-size:13.5px;border-radius:9px}
.burger{display:none}

/* ---------- 通用区块 ---------- */
.sec{padding:78px 0}
.sec.surface{background:var(--surface)}
.sec.tight{padding:56px 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:38px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:12px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent)}
.sec-title{font-size:31px;letter-spacing:-.02em}
.sec-sub{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px}
.link-more{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--brand);flex:none;padding-bottom:4px}
.link-more:hover{gap:11px;color:var(--accent)}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;background:
   radial-gradient(900px 420px at 82% -8%,rgba(26,107,143,.16),transparent 60%),
   linear-gradient(180deg,#f7fafc 0%,#ffffff 78%);
   border-bottom:1px solid var(--line);overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line-2) 1px,transparent 1px),linear-gradient(90deg,var(--line-2) 1px,transparent 1px);background-size:56px 56px;opacity:.5;pointer-events:none;mask-image:linear-gradient(180deg,#000,transparent 70%)}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding-top:64px;padding-bottom:64px}
.hero h1{font-size:46px;line-height:1.24;letter-spacing:-.025em}
.hero h1 em{font-style:normal;color:var(--brand);position:relative;white-space:nowrap}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:9px;background:rgba(192,122,44,.18);border-radius:3px;z-index:-1}
.hero .lead{margin-top:18px;font-size:16.5px;color:#4b5b6b;max-width:540px}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.tag{font-size:12.5px;color:var(--brand);background:#eaf3f8;border:1px solid #d6e6ef;border-radius:999px;padding:6px 13px;font-weight:600}
.hero-btns{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.hero-note{margin-top:22px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.hero-note b{color:var(--ink)}
.hero-visual{position:relative}
.hero-frame{border-radius:20px;overflow:hidden;border:1px solid #dbe6ee;background:#fff;box-shadow:var(--shadow-l)}
.hero-frame img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-badge{position:absolute;left:-18px;bottom:26px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 18px;box-shadow:var(--shadow-m);display:flex;gap:14px;align-items:center}
.hero-badge .n{font-size:26px;font-weight:800;color:var(--brand);line-height:1}
.hero-badge .t{font-size:12px;color:var(--muted);line-height:1.5}
.hero-badge .t b{display:block;color:var(--ink);font-size:13px}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:26px;border-top:1px solid var(--line);padding-top:22px;max-width:520px}
.hero-stats div{padding-right:14px}
.hero-stats b{display:block;font-size:24px;color:var(--ink);line-height:1.1}
.hero-stats span{font-size:12.5px;color:var(--muted)}

/* ---------- 分类卡 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;display:flex;flex-direction:column;transition:.22s;overflow:hidden}
.cat-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:3px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transform:scaleX(0);transform-origin:left;transition:.28s}
.cat-card:hover{border-color:#c9dbe6;box-shadow:var(--shadow-m);transform:translateY(-3px)}
.cat-card:hover::before{transform:scaleX(1)}
.cat-ico{width:44px;height:44px;border-radius:12px;background:var(--surface-2);display:grid;place-items:center;color:var(--brand);margin-bottom:14px}
.cat-card h3{font-size:17.5px}
.cat-card .enu{font-size:11px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase;margin-top:3px}
.cat-card ul{margin:14px 0 16px;display:flex;flex-direction:column;gap:7px}
.cat-card ul li a{font-size:13.5px;color:#54636f;display:flex;gap:7px;align-items:baseline;line-height:1.5}
.cat-card ul li a::before{content:"";width:4px;height:4px;border-radius:50%;background:#c3ced8;flex:none;transform:translateY(-2px)}
.cat-card ul li a:hover{color:var(--accent)}
.cat-card .cfoot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--muted);border-top:1px dashed var(--line);padding-top:13px}
.cat-card .cfoot b{color:var(--accent);font-weight:700}
.cat-card .cfoot .arw{color:var(--brand);font-weight:700}

/* ---------- 优势 ---------- */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.adv{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative}
.adv .num{font-size:12px;font-weight:800;color:#c9d5de;letter-spacing:.1em}
.adv h3{font-size:16.5px;margin:8px 0 8px}
.adv p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.75}
.adv .ico{position:absolute;right:20px;top:22px;color:#cfdde7}

/* ---------- 行业条 ---------- */
.ind-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.ind{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 10px;text-align:center;transition:.2s}
.ind:hover{border-color:#c9dbe6;background:var(--surface);transform:translateY(-2px)}
.ind b{display:block;font-size:14px;color:var(--ink);margin-top:10px}
.ind span{font-size:11.5px;color:var(--muted)}
.ind svg{color:var(--brand);margin:0 auto}

/* ---------- 文章/技术内容 ---------- */
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tech-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;transition:.2s}
.tech-card:hover{border-color:#c9dbe6;box-shadow:var(--shadow-m)}
.tech-card .k{font-size:11.5px;letter-spacing:.08em;color:var(--accent);font-weight:700;text-transform:uppercase}
.tech-card h3{font-size:17px;margin:10px 0 10px;line-height:1.5}
.tech-card h3 a{color:var(--ink)}
.tech-card h3 a:hover{color:var(--brand)}
.tech-card p{font-size:13.5px;color:var(--muted);margin:0 0 16px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tech-card .m{margin-top:auto;font-size:12.5px;color:#98a5b1;display:flex;justify-content:space-between;align-items:center}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(110deg,var(--brand-3),var(--brand) 55%,#155a78);border-radius:20px;color:#fff;padding:46px 48px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;position:relative;overflow:hidden}
.cta::after{content:"";position:absolute;right:-60px;top:-60px;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.05)}
.cta h2{color:#fff;font-size:28px}
.cta p{color:#c5dae5;margin:10px 0 0;font-size:14.5px}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}
.cta .btn-accent{background:var(--accent);color:#fff}
.cta .btn-ghost{background:transparent;border-color:rgba(255,255,255,.35);color:#fff}
.cta .btn-ghost:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}

/* ---------- 页头小标题 ---------- */
.page-head{background:linear-gradient(180deg,var(--surface) 0%,#fff 100%);border-bottom:1px solid var(--line);padding:34px 0 38px}
.page-head h1{font-size:33px;margin-bottom:8px}
.page-head p{color:var(--muted);margin:0;max-width:760px;font-size:14.5px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--accent)}
.crumb i{font-style:normal;color:#c4cfd8}

/* ---------- 产品列表页 ---------- */
.plist-wrap{display:grid;grid-template-columns:262px 1fr;gap:36px;padding:44px 0 70px;align-items:start}
.plist-wrap>*,.detail-grid>*,.content-wrap>*,.detail-top>*{min-width:0}
.plist-wrap>*,.detail-grid>*,.content-wrap>*,.detail-top>*{min-width:0}
.side{position:sticky;top:calc(var(--hdr) + 18px);display:flex;flex-direction:column;gap:18px}
.side-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.side-box>h3{font-size:14px;padding:16px 18px;border-bottom:1px solid var(--line);background:var(--surface);letter-spacing:.02em}
.side-nav a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 18px;font-size:14px;color:#3f4f5d;border-bottom:1px solid var(--line-2)}
.side-nav a:last-child{border-bottom:0}
.side-nav a span{font-size:12px;color:#a7b3bd}
.side-nav a:hover{background:var(--surface);color:var(--brand)}
.side-nav a.on{background:#eef6fa;color:var(--brand);font-weight:700;box-shadow:inset 3px 0 0 var(--brand)}
.side-card{background:linear-gradient(160deg,var(--brand),var(--brand-3));color:#d7e7ef;border-radius:var(--radius);padding:22px}
.side-card b{color:#fff;font-size:15px;display:block}
.side-card p{font-size:12.5px;margin:8px 0 14px;color:#b9d2df}
.side-card .tel{font-size:23px;font-weight:800;color:#fff;letter-spacing:.02em;line-height:1.2}
.side-card .btn{width:100%;margin-top:14px;background:var(--accent);color:#fff}
.side-card .btn:hover{background:#a9681f}
.side-list a{display:flex;gap:11px;padding:11px 16px;border-bottom:1px solid var(--line-2);align-items:center}
.side-list a:last-child{border-bottom:0}
.side-list img{width:52px;height:52px;object-fit:cover;border-radius:8px;border:1px solid var(--line);background:#fff}
.side-list b{font-size:13px;color:#3f4f5d;font-weight:600;line-height:1.5}
.side-list a:hover b{color:var(--brand)}

.plist-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.plist-head h2{font-size:22px}
.plist-head .cnt{font-size:13px;color:var(--muted)}
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.22s}
.pcard:hover{border-color:#c9dbe6;box-shadow:var(--shadow-m);transform:translateY(-3px)}
.pcard .ph{aspect-ratio:4/3;background:#fff;display:grid;place-items:center;overflow:hidden;border-bottom:1px solid var(--line-2);padding:10px}
.pcard .ph img{width:100%;height:100%;object-fit:contain;transition:.35s}
.pcard:hover .ph img{transform:scale(1.04)}
.pcard .pb{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.pcard h3{font-size:15.5px;line-height:1.5;margin-bottom:6px}
.pcard h3 a{color:var(--ink)}
.pcard h3 a:hover{color:var(--brand)}
.pcard p{font-size:12.5px;color:var(--muted);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.7}
.pcard .pf{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#9aa7b2;border-top:1px dashed var(--line);padding-top:11px}
.pcard .pf .go{color:var(--brand);font-weight:700}

/* ---------- 产品详情 ---------- */
.detail{padding:30px 0 74px}
.detail-top{display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:start;margin-bottom:38px}
.gallery{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow-s)}
.gallery .main{border-radius:10px;overflow:hidden;background:#fbfdfe;border:1px solid var(--line-2);display:grid;place-items:center;aspect-ratio:16/10}
.gallery .main img{width:100%;height:100%;object-fit:contain;padding:8px}
.thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.thumbs button{width:74px;height:62px;border-radius:8px;border:1px solid var(--line);background:#fff;padding:4px;overflow:hidden;transition:.18s}
.thumbs button img{width:100%;height:100%;object-fit:contain}
.thumbs button:hover,.thumbs button.on{border-color:var(--brand);box-shadow:0 0 0 2px rgba(15,68,96,.10)}
.dt-body h1{font-size:30px;line-height:1.32;margin-bottom:12px}
.dt-desc{font-size:15px;color:#4c5c6b;margin-bottom:18px}
.dt-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.dt-meta span{font-size:12.5px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px 12px;color:#55646f}
.dt-meta span b{color:var(--brand)}
.dt-points{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:0 0 22px}
.dt-points div{background:var(--surface);border:1px solid var(--line-2);border-radius:10px;padding:12px 14px;font-size:13px;color:#4c5c6b;display:flex;gap:9px;align-items:flex-start}
.dt-points div::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:none;margin-top:8px}
.dt-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.dt-cta .phone{font-size:13px;color:var(--muted)}
.dt-cta .phone b{display:block;font-size:20px;color:var(--brand);letter-spacing:.02em}

.detail-grid{display:grid;grid-template-columns:1fr 336px;gap:40px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-bottom:24px}
.panel-head{display:flex;align-items:center;gap:12px;padding:17px 24px;border-bottom:1px solid var(--line);background:var(--surface)}
.panel-head h2{font-size:17px}
.panel-head .ln{width:4px;height:18px;border-radius:2px;background:var(--accent);flex:none}
.panel-head .r{margin-left:auto;font-size:12.5px;color:var(--muted)}
.panel-body{padding:26px 24px}
.panel-body.flush{padding:0}

/* 正文排版 */
.prose{font-size:15.5px;line-height:1.95;color:#3d4c5c}
.prose>*:first-child{margin-top:0}
.prose h2,.prose .sub{font-size:17.5px;color:var(--ink);margin:30px 0 12px;padding-left:13px;position:relative;line-height:1.5;font-weight:700}
.prose h2::before,.prose .sub::before{content:"";position:absolute;left:0;top:.35em;bottom:.35em;width:3px;border-radius:2px;background:var(--accent)}
.prose p{margin:0 0 15px;text-align:justify}
.prose ul,.prose .list{margin:0 0 16px;padding:0}
.prose .list li{position:relative;padding-left:18px;margin-bottom:8px;font-size:15px}
.prose .list li::before{content:"";position:absolute;left:2px;top:.72em;width:5px;height:5px;border-radius:50%;background:var(--brand-2)}
.prose figure{margin:22px 0}
.prose figure img{border-radius:12px;border:1px solid var(--line);background:#fff;margin:0 auto}
.prose figcaption{font-size:12.5px;color:var(--muted);text-align:center;margin-top:9px}
.prose strong{color:var(--ink)}

/* 表格 */
.tbl-wrap{max-width:100%;overflow-x:auto;border:1px solid var(--line);border-radius:12px;margin:20px 0;background:#fff;-webkit-overflow-scrolling:touch}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px;min-width:460px}
table.tbl th,table.tbl td{padding:11px 14px;border-bottom:1px solid var(--line-2);text-align:left;vertical-align:middle;line-height:1.6}
table.tbl thead th{background:var(--surface-2);color:var(--brand-3);font-weight:700;font-size:13px;white-space:nowrap;border-bottom:1px solid #d8e4ec}
table.tbl tbody tr:nth-child(even){background:#fbfdfe}
table.tbl tbody tr:hover{background:#f2f8fb}
table.tbl tbody tr:last-child td{border-bottom:0}
table.tbl td:first-child{color:var(--ink);font-weight:600}

/* 参数规格表（详情页专用） */
.spec{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:22px}
.spec div{padding:13px 16px;border-bottom:1px solid var(--line-2);font-size:13.5px;display:flex;gap:12px}
.spec div:nth-child(odd){background:#fbfdfe;border-right:1px solid var(--line-2)}
.spec dt,.spec .k{color:var(--muted);flex:none;width:86px}
.spec .v{color:var(--ink);font-weight:600}

/* 详情侧栏 */
.dside{position:sticky;top:calc(var(--hdr) + 18px);display:flex;flex-direction:column;gap:18px}
.dside .side-box>h3{display:flex;align-items:center;gap:9px}
.dside .side-box>h3::before{content:"";width:3px;height:14px;background:var(--accent);border-radius:2px}

/* 相邻产品 */
.pn{display:grid;grid-template-columns:1fr 1fr;gap:0;border-top:1px solid var(--line)}
.pn a{padding:16px 22px;font-size:13.5px;color:#4c5c6b;display:flex;gap:10px;align-items:center}
.pn a+a{border-left:1px solid var(--line);justify-content:flex-end;text-align:right}
.pn a:hover{background:var(--surface);color:var(--brand)}
.pn span{color:#a7b3bd;font-size:12px;flex:none}

/* ---------- 内容页（关于/联系等） ---------- */
.content-wrap{padding:46px 0 74px;display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin:22px 0}
.info-card{border:1px solid var(--line);border-radius:12px;padding:20px;background:#fff}
.info-card .k{font-size:12px;letter-spacing:.08em;color:var(--accent);font-weight:700;text-transform:uppercase}
.info-card b{display:block;font-size:16px;color:var(--ink);margin-top:6px;line-height:1.5}
.info-card p{font-size:13px;color:var(--muted);margin:6px 0 0}

/* 联系表 */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;color:#4c5c6b;font-weight:600}
.field label i{color:#d9534f;font-style:normal}
.field input,.field select,.field textarea{
  border:1px solid var(--line);border-radius:9px;padding:11px 13px;font-size:14px;font-family:inherit;color:var(--ink);background:#fff;transition:.18s;width:100%
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(26,107,143,.10)}
.field textarea{min-height:110px;resize:vertical}
.form-tip{font-size:12.5px;color:var(--muted);margin-top:12px}
.form-ok{display:none;background:#eef8f3;border:1px solid #bfe3d4;color:#17735c;border-radius:10px;padding:14px 16px;font-size:14px;margin-top:14px}

/* ---------- 搜索 ---------- */
.search-layer{position:fixed;inset:0;z-index:120;background:rgba(11,27,40,.42);backdrop-filter:blur(3px);display:none}
.search-layer.on{display:block}
.search-box{max-width:720px;margin:12vh auto 0;background:#fff;border-radius:16px;box-shadow:var(--shadow-l);overflow:hidden}
.search-bar{display:flex;align-items:center;gap:12px;padding:16px 20px;border-bottom:1px solid var(--line)}
.search-bar input{border:0;outline:0;font-size:17px;flex:1;font-family:inherit;color:var(--ink);background:#fff}
.search-bar kbd{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:2px 6px;background:var(--surface)}
.search-res{max-height:56vh;overflow:auto;padding:8px}
.sr-item{display:block;padding:12px 14px;border-radius:10px}
.sr-item:hover{background:var(--surface)}
.sr-item b{display:block;font-size:14.5px;color:var(--ink);font-weight:600}
.sr-item span{font-size:12.5px;color:var(--muted);display:block;margin-top:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sr-empty{padding:26px;text-align:center;color:var(--muted);font-size:13.5px}
.search-hint{padding:10px 20px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);display:flex;justify-content:space-between}

/* ---------- 页脚 ---------- */
.footer{background:var(--brand-3);color:#a9c3d1;padding:56px 0 0;font-size:13.5px;margin-top:0}
.footer .cols{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:40px;padding-bottom:40px}
.footer h4{color:#fff;font-size:14.5px;margin-bottom:16px;letter-spacing:.02em}
.footer a{color:#a9c3d1}
.footer a:hover{color:#fff}
.footer .fbrand{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.footer .fbrand .brand-logo{height:41px;background:rgba(255,255,255,.92);border-radius:9px;padding:4px}
.footer .fbrand b{font-size:16.5px}
.footer .fbrand b{color:#fff;font-size:17px;display:block;line-height:1.3}
.footer .fbrand span{font-size:10.5px;letter-spacing:.12em;color:#7d9aab}
.footer p{line-height:1.9;margin:0 0 8px;color:#93b0c0}
.footer ul{display:flex;flex-direction:column;gap:9px}
.footer .fline{display:flex;gap:9px;align-items:flex-start;margin-bottom:10px;line-height:1.7}
.footer .fline svg{flex:none;margin-top:5px;opacity:.7}
.footer .tel-big{color:#fff;font-size:19px;font-weight:800;letter-spacing:.02em}
.footer .bottom{border-top:1px solid rgba(255,255,255,.10);padding:16px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#7d9aab}
.footer .bottom a{color:#7d9aab}

/* 浮动工具 */
.float{position:fixed;right:18px;bottom:26px;z-index:70;display:flex;flex-direction:column;gap:10px}
.float a,.float button{width:46px;height:46px;border-radius:12px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-m);display:grid;place-items:center;color:var(--brand);transition:.18s}
.float a:hover,.float button:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* 移动端 */
@media(max-width:1120px){
  .nav>li>a{padding:0 10px;font-size:14px}
  .mega{width:640px}
  .cat-grid,.adv-grid{grid-template-columns:repeat(2,1fr)}
  .ind-grid{grid-template-columns:repeat(3,1fr)}
  .pgrid{grid-template-columns:repeat(2,1fr)}
  .detail-top{grid-template-columns:1fr 320px;gap:28px}
}
@media(max-width:960px){
  :root{--hdr:64px}
  .topbar .tb-l a.hide-sm,.topbar .tb-r{display:none}
  .header .wrap{gap:14px}
  .burger{display:grid;margin-left:auto}
  .nav{position:fixed;left:0;right:0;top:calc(var(--hdr) + 38px);background:#fff;flex-direction:column;align-items:stretch;padding:8px 14px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-m);display:none;max-height:calc(100vh - var(--hdr) - 38px);overflow:auto;margin:0}
  .nav.open{display:flex}
  .nav>li>a{height:auto;padding:14px 6px;border-bottom:1px solid var(--line-2)}
  .nav>li>a::after{display:none}
  .mega{position:static;transform:none;width:auto;box-shadow:none;border:0;border-radius:0;padding:0 0 8px;opacity:1;visibility:visible;display:none;background:var(--surface)}
  .nav>li.open>.mega{display:block}
  .mega-grid{grid-template-columns:1fr 1fr;padding:8px}
  .mega-foot{display:none}
  .hdr-act .btn{display:none}
  .hero .wrap{grid-template-columns:1fr;gap:34px;padding-top:40px;padding-bottom:44px}
  .hero h1{font-size:34px}
  .hero-badge{left:auto;right:14px;bottom:14px;padding:10px 14px}
  .hero-stats{max-width:none}
  .sec{padding:52px 0}
  .sec-title{font-size:25px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:26px}
  .tech-grid{grid-template-columns:1fr 1fr}
  .plist-wrap,.detail,.content-wrap{grid-template-columns:1fr}
  .plist-wrap{gap:22px;padding:26px 0 50px}
  .side,.dside{position:static;order:2}
  .detail-top{grid-template-columns:1fr;gap:24px}
  .detail-grid{grid-template-columns:1fr;gap:24px}
  .cta{grid-template-columns:1fr;padding:32px 26px}
  .footer .cols{grid-template-columns:1fr 1fr;gap:28px}
  .spec{grid-template-columns:1fr}
  .spec div:nth-child(odd){border-right:0}
}
@media(max-width:600px){
  body{font-size:15px}
  .wrap{padding:0 16px}
  .topbar{font-size:12px}
  .topbar .wrap{height:34px}
  .hero h1{font-size:27px}
  .hero .lead{font-size:15px}
  .hero-btns .btn{flex:1;min-width:140px}
  .hero-stats b{font-size:20px}
  .cat-grid,.adv-grid,.ind-grid,.pgrid,.tech-grid,.info-grid,.form-grid{grid-template-columns:1fr}
  .dt-points{grid-template-columns:1fr}
  .detail-top,.panel-body{padding-left:0;padding-right:0}
  .panel-body{padding:18px 16px}
  .panel-head{padding:14px 16px}
  .gallery{padding:12px}
  .dt-body h1,.page-head h1{font-size:23px}
  .sec-title{font-size:22px}
  .footer .cols{grid-template-columns:1fr;gap:24px}
  .cta h2{font-size:22px}
  .search-box{margin:6vh 12px 0}
  .float{right:12px;bottom:16px}
  .float a,.float button{width:42px;height:42px}
  .pn{grid-template-columns:1fr}
  .pn a+a{border-left:0;border-top:1px solid var(--line);justify-content:flex-start;text-align:left}
}