/* =========================================================
   PROTECTOR SAFETY IND CO.,LTD. — shared stylesheet
   Pure static, no frameworks. Layout reference: original site
   (canvas 1200px, header band 86px, logo 129px wide, dark nav bar)
   ========================================================= */

/* ---------- Tokens ---------- */
:root{
  --red:#C8102E;
  --red-dark:#8E0A1F;
  --red-soft:#fdeef1;
  --ink:#0F1722;
  --ink-2:#182233;
  --text:#1d2530;
  --muted:#5b6573;
  --line:#e6e8ee;
  --soft:#f6f7f9;
  --soft-2:#eef1f5;
  --shadow:0 6px 24px rgba(15,23,34,.06);
  --shadow-lg:0 18px 48px rgba(15,23,34,.14);
  --radius:14px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --container:1240px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  font-family:"Inter","Helvetica Neue","Segoe UI",Arial,"Microsoft YaHei",sans-serif;
  color:var(--text);background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);line-height:1.2}
p{margin:0}
button{font:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- Scroll progress ---------- */
.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:120;
  background:linear-gradient(90deg,var(--red),#ff7a8f);transition:width .12s linear}

/* ---------- Scroll reveal (only hidden when JS is available) ---------- */
.js .reveal{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
.js .reveal.zoom{transform:scale(.94)}
.js .reveal.zoom.in{transform:none}
.js .reveal.left{transform:translateX(-36px)}
.js .reveal.right{transform:translateX(36px)}
.js .reveal.left.in,.js .reveal.right.in{transform:none}
@media (prefers-reduced-motion: reduce){
  .js .reveal{opacity:1;transform:none;transition:none}
  *{animation-duration:.001s !important;animation-iteration-count:1 !important}
}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}
.d4{transition-delay:.32s}.d5{transition-delay:.4s}.d6{transition-delay:.48s}

@keyframes fadeUp{from{opacity:0;transform:translateY(28px)}to{opacity:1;transform:none}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes pulseRing{0%{box-shadow:0 0 0 0 rgba(200,16,46,.45)}70%{box-shadow:0 0 0 18px rgba(200,16,46,0)}100%{box-shadow:0 0 0 0 rgba(200,16,46,0)}}
@keyframes barGrow{from{width:0}to{width:64px}}
@keyframes shine{from{left:-120%}to{left:120%}}

/* ---------- Top utility bar ---------- */
.topbar{background:var(--ink);color:#c3cad6;font-size:14px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:44px;gap:16px}
.topbar a{color:#c3cad6;transition:color .2s}
.topbar a:hover{color:#fff}
.topbar .links{display:flex;gap:26px;flex-wrap:wrap}
.topbar .links i{font-style:normal;color:var(--red);margin-right:7px;font-weight:700}

/* ---------- Header ---------- */
.mainbar{position:sticky;top:0;z-index:110;background:#fff;box-shadow:0 1px 0 var(--line);transition:box-shadow .3s,background .3s}
.mainbar.scrolled{box-shadow:0 8px 26px rgba(15,23,34,.10)}
.mainbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:96px;transition:height .3s var(--ease)}
.mainbar.scrolled .mainbar-inner{height:80px}
.brand{display:flex;align-items:center;gap:16px;flex-shrink:0}
.brand-mark{width:150px;height:auto;transition:width .3s var(--ease)}
.mainbar.scrolled .brand-mark{width:128px}
/* 两行公司名共用同一个字号变量,改一处即可,不会再出现一行大一行小 */
.brand-name{--brand-size:19px}
.brand-name strong{display:block;font-size:var(--brand-size);letter-spacing:.4px;color:var(--ink);line-height:1.25;white-space:nowrap}
.brand-name em{display:block;font-style:normal;font-weight:700;font-size:var(--brand-size);letter-spacing:2.6px;color:var(--ink);line-height:1.25;margin-top:3px;white-space:nowrap}

nav.main{display:flex;align-items:center;height:58px;background:var(--ink);border-radius:10px;padding:0 6px;box-shadow:var(--shadow);transition:height .3s var(--ease)}
.mainbar.scrolled nav.main{height:52px}
nav.main a{
  position:relative;display:flex;align-items:center;height:100%;padding:0 22px;
  color:#fff;font-size:17px;font-weight:600;letter-spacing:.3px;white-space:nowrap;
  transition:color .25s,background .25s;border-radius:8px;
}
nav.main a:hover{color:#fff}
nav.main a::before{
  content:"";position:absolute;left:50%;right:50%;bottom:12px;height:3px;border-radius:3px;
  background:var(--red);transition:left .3s var(--ease),right .3s var(--ease);
}
nav.main a:hover::before,nav.main a.active::before{left:22px;right:22px}
nav.main a.active{color:#fff}
.menu-btn{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;position:relative}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{
  display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;position:absolute;left:50%;margin-left:-11px;
  transition:.3s var(--ease);
}
.menu-btn span{top:50%;margin-top:-1px}
.menu-btn span::before{content:"";top:-7px}
.menu-btn span::after{content:"";top:7px}
.menu-btn.open span{background:transparent}
.menu-btn.open span::before{transform:rotate(45deg);top:0}
.menu-btn.open span::after{transform:rotate(-45deg);top:0}

/* ---------- Buttons ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;gap:9px;padding:15px 28px;border-radius:10px;
  font-weight:600;font-size:16px;letter-spacing:.3px;border:1px solid transparent;cursor:pointer;
  transition:transform .25s var(--ease),background .25s,color .25s,box-shadow .25s,border-color .25s;
  overflow:hidden;
}
.btn:hover{transform:translateY(-2px)}
.btn.primary{background:var(--red);color:#fff;border-color:var(--red);box-shadow:0 10px 24px rgba(200,16,46,.24)}
.btn.primary:hover{background:var(--red-dark);border-color:var(--red-dark);box-shadow:0 14px 30px rgba(200,16,46,.32)}
.btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.62)}
.btn.ghost:hover{background:rgba(255,255,255,.14);border-color:#fff}
.btn.dark{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn.dark:hover{background:#000}
.btn.outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.outline:hover{border-color:var(--red);color:var(--red)}
.btn.mini{padding:11px 20px;font-size:14px}

/* ---------- Section headers ---------- */
section{padding:92px 0}
.sec-head{text-align:center;max-width:780px;margin:0 auto 58px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:3.4px;color:var(--red);font-weight:700;text-transform:uppercase;margin-bottom:12px;position:relative}
.sec-head h2{font-size:40px;margin-bottom:16px;letter-spacing:-.4px}
.sec-head h2::after{content:"";display:block;height:4px;border-radius:4px;background:var(--red);width:64px;margin:18px auto 0;animation:barGrow .9s var(--ease) both}
.sec-head p{color:var(--muted);font-size:17px}
.sec-head.left{text-align:left;margin-left:0}
.sec-head.left h2::after{margin-left:0}

/* ---------- Hero (home) ---------- */
.hero{position:relative;overflow:hidden;color:#fff;isolation:isolate;min-height:640px;display:flex;align-items:center}
/* 首页大图轮播:三张图交叉淡入淡出 + 缓慢推近,纯 CSS 驱动,不依赖 JS。
   周期 21s,每张独占 7s;淡入淡出各 1.2s 且互相重叠(前一张的淡出与后一张的
   淡入同步,两侧不透明度之和恒为 1),因此切换过程中不会闪过底色。
   图片:① 原首页大图 ② 旧站首页横幅 ③ Pexels 工业喷淋系统立管(见 assets/img/CREDITS.txt) */
.hero-bg{position:absolute;inset:0;z-index:-2;overflow:hidden}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;
  animation:heroFade 21s linear infinite,heroZoom 21s linear infinite}
.hero-slide.s1{background-image:url("../img/hero_1_flames.jpg?v=2")}
.hero-slide.s2{background-image:url("../img/hero_2_firefighters.jpg?v=2");animation-delay:7s}
.hero-slide.s3{background-image:url("../img/hero_3_sprinkler.jpg?v=2");animation-delay:14s}
@keyframes heroFade{
  0%{opacity:0}
  5.71%{opacity:1}      /* 1.2s  淡入结束 */
  33.33%{opacity:1}     /* 7s    开始淡出 */
  39.05%{opacity:0}     /* 8.2s  淡出结束,与下一张的淡入重合 */
  100%{opacity:0}}
@keyframes heroZoom{
  0%{transform:scale(1)}
  39.05%{transform:scale(1.065)}
  100%{transform:scale(1.065)}}
@media (prefers-reduced-motion:reduce){
  .hero-slide{animation:none}
  .hero-slide.s1{opacity:1}     /* 只保留第一张,不做任何动效 */
}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(115deg,rgba(15,23,34,.88) 0%,rgba(15,23,34,.6) 52%,rgba(200,16,46,.5) 100%)}
.hero-inner{padding:110px 24px;max-width:884px}
.kicker{display:inline-block;padding:8px 16px;border:1px solid rgba(255,255,255,.36);border-radius:999px;
  font-size:13px;letter-spacing:2.4px;text-transform:uppercase;color:#fff;margin-bottom:26px;
  background:rgba(255,255,255,.06);animation:fadeUp .8s var(--ease) both}
.hero h1{color:#fff;font-size:60px;line-height:1.1;letter-spacing:-.6px;margin-bottom:20px;animation:fadeUp .9s .1s var(--ease) both}
.hero .sub{font-size:21px;color:#e7ebf3;margin-bottom:38px;max-width:660px;animation:fadeUp .9s .2s var(--ease) both}
.cta{display:flex;gap:16px;flex-wrap:wrap;animation:fadeUp .9s .3s var(--ease) both}
.hero-stats{display:flex;gap:56px;margin-top:60px;flex-wrap:wrap;animation:fadeUp .9s .45s var(--ease) both}
.hero-stats strong{display:block;font-size:36px;font-weight:800;color:#fff;line-height:1.1}
/* 说明标签。必须用 >div>span 限定:数字 <span data-count> 嵌在 <strong> 里,
   若写成 .hero-stats span 会把它一起压成 13px,导致四项数字大小不一。 */
.hero-stats>div>span{font-size:13px;color:#b9c2d0;letter-spacing:1.4px;text-transform:uppercase}
.hero-stats strong span{font-size:inherit;letter-spacing:.5px;text-transform:none;color:inherit}
.scroll-hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);color:#fff;opacity:.72;
  font-size:12px;letter-spacing:2.4px;text-transform:uppercase;animation:floatY 2.4s ease-in-out infinite}
.scroll-hint::after{content:"";display:block;width:1px;height:34px;background:rgba(255,255,255,.6);margin:8px auto 0}

/* ---------- Page banner (inner pages) ---------- */
.page-banner{position:relative;min-height:360px;display:flex;align-items:center;color:#fff;isolation:isolate;overflow:hidden}
.page-banner .bg{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center;transform:scale(1.05)}
.page-banner::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(110deg,rgba(15,23,34,.9),rgba(15,23,34,.62) 60%,rgba(200,16,46,.42))}
.page-banner h1{color:#fff;font-size:48px;letter-spacing:-.5px;animation:fadeUp .8s var(--ease) both}
.page-banner .lead{color:#dbe1ea;font-size:18px;margin-top:14px;max-width:720px;animation:fadeUp .9s .12s var(--ease) both}
/* 站点有意不标注当前位置:头图里不放面包屑(.crumb 规则已移除) */

/* ---------- Stats band ---------- */
.stats-band{background:var(--ink);color:#fff;padding:56px 0}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stats-grid .n{font-size:42px;font-weight:800;color:#fff;line-height:1.1}
.stats-grid .n em{font-style:normal;color:var(--red)}
.stats-grid .l{font-size:13px;letter-spacing:2px;text-transform:uppercase;color:#9aa3b3;margin-top:6px}

/* ---------- Category cards ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.cat:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.cat .ph{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;padding:26px;background:#fff;overflow:hidden}
.cat .ph img{max-height:100%;width:auto;object-fit:contain;transition:transform .5s var(--ease)}
.cat:hover .ph img{transform:scale(1.08)}
.cat .meta{position:relative;padding:22px 24px 28px;border-top:1px solid var(--line)}
.cat .meta h3{font-size:18px;margin-bottom:7px}
.cat .meta span{font-size:12px;color:var(--muted);letter-spacing:1.4px;text-transform:uppercase}
.cat .arrow{position:absolute;right:20px;bottom:20px;width:38px;height:38px;border-radius:50%;background:var(--soft-2);
  color:var(--ink);display:flex;align-items:center;justify-content:center;font-weight:700;transition:.3s var(--ease)}
.cat:hover .arrow{background:var(--red);color:#fff;transform:rotate(-45deg)}

/* ---------- Feature cards ---------- */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 26px;text-align:center;transition:.35s var(--ease);position:relative;overflow:hidden}
.feat::before{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--red);transition:width .4s var(--ease)}
.feat:hover::before{width:100%}
.feat:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feat .ico{width:68px;height:68px;margin:0 auto 20px;border-radius:18px;background:var(--red);
  display:flex;align-items:center;justify-content:center;transition:transform .4s var(--ease)}
.feat:hover .ico{transform:rotate(-8deg) scale(1.06)}
.feat .ico img{width:36px;height:36px;object-fit:contain;filter:brightness(0) invert(1)}
.feat h3{font-size:19px;margin-bottom:11px}
.feat p{color:var(--muted);font-size:15px;line-height:1.75}

/* ---------- About split ---------- */
.about-split{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.about-split h2{font-size:38px;margin-bottom:18px}
.about-split .lead{color:var(--muted);font-size:17px;margin-bottom:20px}
.about-split .body{color:#3a4250;font-size:16px;margin-bottom:14px}
.about-img{position:relative}
.about-img .primary{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%}
.about-img .badge{position:absolute;left:-28px;bottom:-28px;width:172px;height:172px;border-radius:50%;
  background:var(--ink);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;
  box-shadow:var(--shadow-lg);border:7px solid #fff;text-align:center;padding:14px;animation:floatY 4s ease-in-out infinite}
.about-img .badge strong{font-size:36px;color:#fff;line-height:1}
.about-img .badge span{font-size:11px;letter-spacing:2px;color:#c3cad6;margin-top:7px;text-transform:uppercase}
.checklist{list-style:none;padding:0;margin:22px 0 0}
.checklist li{position:relative;padding:9px 0 9px 32px;color:#3a4250;font-size:15.5px}
.checklist li::before{content:"";position:absolute;left:0;top:12px;width:20px;height:20px;border-radius:50%;background:var(--red);
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'><path d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/></svg>");
  background-size:13px;background-repeat:no-repeat;background-position:center}

/* ---------- Product grid ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.prod{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .35s var(--ease),box-shadow .35s,border-color .35s}
.prod:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.prod .ph{position:relative;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;padding:22px;background:#fff;cursor:zoom-in;overflow:hidden}
.prod .ph img{max-height:100%;width:auto;object-fit:contain;transition:transform .5s var(--ease)}
.prod:hover .ph img{transform:scale(1.09)}
.prod .ph::after{content:"Click to enlarge";position:absolute;left:0;right:0;bottom:0;padding:9px;text-align:center;
  font-size:12px;letter-spacing:1.4px;text-transform:uppercase;color:#fff;background:linear-gradient(transparent,rgba(15,23,34,.82));
  opacity:0;transform:translateY(100%);transition:.35s var(--ease)}
.prod:hover .ph::after{opacity:1;transform:none}
.prod .tag{position:absolute;top:14px;left:14px;z-index:2;background:var(--ink);color:#fff;font-size:11px;
  padding:6px 11px;border-radius:5px;letter-spacing:1.2px;text-transform:uppercase}
.prod .tag.foam{background:var(--red)}
.prod .info{padding:20px 22px 24px;border-top:1px solid var(--line);flex:1;display:flex;flex-direction:column}
.prod .info h3{font-size:16.5px;line-height:1.4;min-height:46px}
.prod .info h3 a{transition:color .25s;cursor:zoom-in}
.prod .info h3 a:hover{color:var(--red)}
.prod .info .row{margin-top:auto;padding-top:14px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}
.prod .info .ask{color:var(--red);font-weight:600}
.prod .info .ask:hover{text-decoration:underline}

/* filter tabs */
.filters{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-bottom:44px}
.filters button{
  padding:12px 24px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--text);
  font-size:15px;font-weight:600;cursor:pointer;transition:.28s var(--ease);
}
.filters button:hover{border-color:var(--red);color:var(--red)}
.filters button.active{background:var(--red);border-color:var(--red);color:#fff;box-shadow:0 10px 24px rgba(200,16,46,.24)}
.prod.hide{display:none}
.prod.pop{animation:fadeUp .5s var(--ease) both}

/* ---------- Certification strip ---------- */
.certs-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:center;justify-items:center;
  background:#fff;padding:40px;border-radius:var(--radius);border:1px solid var(--line)}
.certs-strip img{max-height:96px;width:auto;object-fit:contain;filter:grayscale(1);opacity:.75;transition:.35s var(--ease)}
.certs-strip img:hover{filter:none;opacity:1;transform:scale(1.06)}

/* ---------- Gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.gallery a{position:relative;display:block;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:#fff;cursor:zoom-in}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .55s var(--ease)}
.gallery a:hover img{transform:scale(1.07)}
.gallery a::after{content:"";position:absolute;inset:0;background:linear-gradient(transparent 55%,rgba(15,23,34,.72));opacity:0;transition:.35s}
.gallery a:hover::after{opacity:1}
.gallery .cap{position:absolute;left:20px;bottom:16px;color:#fff;font-size:14px;font-weight:600;letter-spacing:.4px;
  z-index:2;opacity:0;transform:translateY(10px);transition:.35s var(--ease)}
.gallery a:hover .cap{opacity:1;transform:none}
/* document / certificate variant: show the whole sheet, never crop it */
.gallery.docs a{background:#fff;border:1px solid var(--line)}
.gallery.docs img{object-fit:contain;aspect-ratio:3/4;background:#fff;padding:10px}
.gallery.docs a::after{background:linear-gradient(transparent 62%,rgba(15,23,34,.75))}
/* the certificate scans are only ~200px wide, so use a tighter grid:
   6 across keeps the drawn size at ~160px (0.8x of native) instead of
   upscaling them to 330px (1.7x), which is what made them look blurry */
.gallery.docs{grid-template-columns:repeat(6,1fr);gap:18px}
.gallery.docs .cap{left:12px;right:12px;bottom:12px;font-size:12.5px;line-height:1.35;letter-spacing:.2px}

/* ---------- News grid ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.35s var(--ease);display:flex;flex-direction:column;position:relative}
.news:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.news .ph{display:block;aspect-ratio:16/10;overflow:hidden;cursor:pointer;position:relative}
.news .ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.news:hover .ph img{transform:scale(1.08)}
.news .info{padding:24px 26px 28px;display:flex;flex-direction:column;flex:1}
.news .meta{font-size:12px;color:var(--red);letter-spacing:2px;text-transform:uppercase;margin-bottom:10px;font-weight:700}
.news h3{font-size:18px;line-height:1.45;transition:color .25s}
.news h3 a{display:block}
/* 整张卡片可点:标题链接的伪元素铺满卡片,图片/标题/箭头都指向同一个详情页 */
.news h3 a::after{content:"";position:absolute;inset:0;z-index:2}
.news:hover h3{color:var(--red)}
.news .more{margin-top:auto;padding-top:16px;font-size:13px;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted)}

/* ---------- News article (static detail page) ---------- */
.page-banner.article{min-height:330px}
.page-banner.article h1{font-size:40px;max-width:1000px}
.page-banner.article .lead{font-size:17px}
.art-cat{display:inline-block;font-size:12px;letter-spacing:2.6px;text-transform:uppercase;font-weight:700;color:#fff;
  background:var(--red);padding:7px 15px;border-radius:999px;margin-bottom:16px;animation:fadeUp .8s var(--ease) both}
.art-sec{padding:64px 0 76px}
.art-wrap{max-width:860px;margin:0 auto}
.art-back{display:inline-block;font-size:14px;color:var(--muted);margin-bottom:22px;transition:color .2s}
.art-back:hover{color:var(--red)}
.art-meta{display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;font-size:14px;color:var(--muted);
  padding-bottom:24px;margin-bottom:30px;border-bottom:1px solid var(--line)}
.art-meta strong{color:var(--ink);font-weight:600;margin-right:6px}
.art-meta .pill{background:var(--red-soft);color:var(--red);font-weight:700;font-size:12px;letter-spacing:2px;
  text-transform:uppercase;padding:6px 13px;border-radius:999px}
.art-fig{margin:0 0 34px}
/* 新闻配图只有 560px 宽,按原始尺寸居中显示,不放大 */
.art-fig img{width:100%;max-width:560px;height:auto;margin:0 auto;border-radius:var(--radius);box-shadow:var(--shadow)}
.art-fig figcaption{text-align:center;font-size:13.5px;color:var(--muted);margin-top:12px}
.art-body{font-size:17px;color:#333c49}
.art-body > p:first-of-type{font-size:18.5px;color:var(--ink)}
.art-body h2{font-size:26px;margin:38px 0 14px}
.art-body h3{font-size:20px;margin:28px 0 10px}
.art-body p{margin:0 0 16px}
.art-body ul,.art-body ol{margin:0 0 18px;padding-left:22px}
.art-body li{margin-bottom:9px}
.art-body a{color:var(--red);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.art-body a:hover{color:var(--red-dark)}
.art-body strong{color:var(--ink)}
.art-body code{background:var(--soft-2);border-radius:6px;padding:2px 6px;font-size:15px}
.art-body .keypoints{background:var(--soft);border-left:4px solid var(--red);
  border-radius:0 var(--radius) var(--radius) 0;padding:24px 28px;margin:0 0 34px}
.art-body .keypoints h2{font-size:19px;margin:0 0 12px}
.art-body .keypoints ul{margin:0;padding-left:20px}
.art-body .keypoints li{font-size:15.5px;color:#3a4250;margin-bottom:8px}
.art-body .tbl{margin:0 0 26px;border:1px solid var(--line);border-radius:var(--radius);overflow:auto;background:#fff;box-shadow:var(--shadow)}
.art-body .tbl table{width:100%;border-collapse:collapse;font-size:15px}
.art-body .tbl th{background:var(--ink);color:#fff;text-align:left;padding:13px 16px;font-weight:600;font-size:13.5px;letter-spacing:.4px;white-space:nowrap}
.art-body .tbl td{padding:12px 16px;border-top:1px solid var(--line);vertical-align:top;color:#3a4250}
.art-body .tbl tbody tr:nth-child(even){background:#fafbfc}
.art-refs{margin-top:44px;padding-top:26px;border-top:1px solid var(--line)}
.art-refs h2{font-size:19px;margin-bottom:8px}
.art-refs p{font-size:14.5px;color:var(--muted);margin-bottom:12px}
.art-refs ul{margin:0;padding-left:20px}
.art-refs li{font-size:14.5px;color:var(--muted);margin-bottom:8px}
.art-refs a{color:#3a4250;text-decoration:underline;text-underline-offset:3px}
.art-refs a:hover{color:var(--red)}
.art-cta{margin-top:50px;position:relative;overflow:hidden;border-radius:18px;box-shadow:var(--shadow-lg);
  background:linear-gradient(115deg,var(--ink) 0%,var(--ink-2) 55%,var(--red-dark) 100%);
  color:#fff;padding:40px 44px;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.art-cta h3{color:#fff;font-size:26px;margin-bottom:8px;position:relative}
.art-cta p{color:#c3cad6;font-size:15.5px;position:relative}
.art-cta .actions{display:flex;gap:14px;flex-wrap:wrap;position:relative}
.art-related{background:var(--soft)}

/* ---------- Contact ---------- */
.contact-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 28px;transition:.35s var(--ease);position:relative;overflow:hidden}
.cc::after{content:"";position:absolute;right:-60px;top:-60px;width:150px;height:150px;border-radius:50%;background:var(--red-soft);
  opacity:0;transition:.4s var(--ease)}
.cc:hover::after{opacity:1;transform:scale(1.2)}
.cc:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.cc .ico{position:relative;z-index:2;width:56px;height:56px;border-radius:16px;background:var(--red);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.cc .ico svg{width:26px;height:26px;fill:#fff}
.cc .ico img{width:26px;height:26px;filter:brightness(0) invert(1)}
.cc .lbl{position:relative;z-index:2;font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-bottom:8px;font-weight:700}
.cc .val{position:relative;z-index:2;font-size:16px;color:var(--ink);font-weight:600;line-height:1.55;word-break:break-word}
.cc .val a{display:block}
.cc .val a:hover{color:var(--red)}
.cc .val small{display:block;font-weight:400;color:var(--muted);font-size:14px}

.cta-band{position:relative;overflow:hidden;border-radius:18px;background:linear-gradient(115deg,var(--ink) 0%,var(--ink-2) 55%,var(--red-dark) 100%);
  color:#fff;padding:56px 56px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;box-shadow:var(--shadow-lg)}
.cta-band::before{content:"";position:absolute;right:-90px;top:-90px;width:320px;height:320px;border-radius:50%;background:rgba(200,16,46,.35);filter:blur(30px)}
.cta-band h3{color:#fff;font-size:32px;margin-bottom:10px;position:relative}
.cta-band p{color:#c3cad6;font-size:16px;position:relative}
.cta-band .actions{display:flex;gap:14px;flex-wrap:wrap;position:relative}

/* Section that wraps the closing CTA band.
   It used to be flush with the block above (padding-top:0), which read as
   cramped. `.sec-cta` gives it the same top rhythm as every other section;
   the two modifiers below cover the pages that need a different gap. */
.sec-cta{padding-top:92px}
.sec-cta.tight{padding-top:0}          /* Contact — band tucks under the approvals card on purpose */
.sec-cta.after-band{padding-top:148px} /* Products — the dark stats band above only has a 56px bottom padding */
.contact-layout{display:grid;grid-template-columns:1.35fr 1fr;gap:40px;align-items:start}
.info-panel{background:var(--ink);border-radius:var(--radius);padding:44px 40px;color:#c3cad6;position:relative;overflow:hidden}
.info-panel::after{content:"";position:absolute;right:-70px;bottom:-70px;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle,rgba(200,16,46,.38),transparent 70%)}
.info-panel h3{color:#fff;font-size:26px;margin-bottom:8px;position:relative}
.info-panel .sub{color:#9aa3b3;font-size:15px;margin-bottom:28px;position:relative}
.ci-row{display:flex;gap:16px;padding:16px 0;border-top:1px solid rgba(255,255,255,.09);position:relative}
.ci-row .ico{flex:0 0 40px;height:40px;border-radius:11px;background:rgba(200,16,46,.2);display:flex;align-items:center;justify-content:center}
.ci-row .ico svg{width:19px;height:19px;fill:#fff}
.ci-row .ico img{width:19px;height:19px;filter:brightness(0) invert(1)}
.ci-row .lbl{font-size:11px;letter-spacing:2px;text-transform:uppercase;color:#9aa3b3;margin-bottom:3px}
.ci-row .val{color:#fff;font-size:16px;line-height:1.5}
.ci-row a.val:hover{color:#ff8598}

/* ---------- Footer ---------- */
footer{background:var(--ink);color:#98a1b0;padding:64px 0 0;position:relative;overflow:hidden}
footer::before{content:"";position:absolute;left:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(200,16,46,.22),transparent 70%)}
.footer-grid{position:relative;display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
footer h4{color:#fff;font-size:14px;letter-spacing:2px;text-transform:uppercase;margin-bottom:18px}
footer .brand-foot{display:flex;align-items:center;gap:14px;margin-bottom:18px}
footer .brand-foot img{width:120px;height:auto}
footer .brand-foot strong{color:#fff;font-size:17px;letter-spacing:.4px}
footer p{font-size:15px;line-height:1.75}
footer ul{list-style:none;padding:0;margin:0}
footer li{padding:7px 0;font-size:15px}
footer li a{transition:color .2s,padding-left .25s var(--ease);display:inline-block}
footer li a:hover{color:#fff;padding-left:6px}
.copy{position:relative;border-top:1px solid rgba(255,255,255,.09);padding:20px 0;text-align:center;font-size:14px;color:#8b94a3}

/* ---------- Lightbox ---------- */
.lb{position:fixed;inset:0;z-index:200;background:rgba(9,13,20,.94);display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .3s ease;padding:72px 84px}
.lb.show{opacity:1;pointer-events:auto}
.lb-img{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px;background:#fff;padding:8px;
  transform:scale(.94);transition:transform .35s var(--ease);box-shadow:0 30px 80px rgba(0,0,0,.5)}
.lb.show .lb-img{transform:none}
.lb-cap{position:absolute;left:0;right:0;bottom:26px;text-align:center;color:#fff;font-size:16px;font-weight:600;letter-spacing:.4px;padding:0 100px}
.lb-cap small{display:block;color:#9aa3b3;font-weight:400;margin-top:6px;font-size:13px;letter-spacing:1.4px;text-transform:uppercase}
.lb-close,.lb-prev,.lb-next{position:absolute;border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.08);color:#fff;
  width:52px;height:52px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:.25s var(--ease);backdrop-filter:blur(4px)}
.lb-close{top:24px;right:24px}
.lb-prev{left:24px;top:50%;margin-top:-26px}
.lb-next{right:24px;top:50%;margin-top:-26px}
.lb-close:hover,.lb-prev:hover,.lb-next:hover{background:var(--red);border-color:var(--red);transform:scale(1.08)}
.lb-close svg,.lb-prev svg,.lb-next svg{width:22px;height:22px;fill:#fff}
.lb-spin{position:absolute;width:38px;height:38px;border:3px solid rgba(255,255,255,.25);border-top-color:var(--red);
  border-radius:50%;animation:spin .8s linear infinite;opacity:0;transition:opacity .2s}
.lb.loading .lb-spin{opacity:1}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Back to top ---------- */
.totop{position:fixed;right:26px;bottom:30px;width:52px;height:52px;border-radius:50%;background:var(--red);color:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;border:0;z-index:90;opacity:0;pointer-events:none;
  transform:translateY(14px);transition:.35s var(--ease);box-shadow:0 12px 28px rgba(200,16,46,.34)}
.totop.show{opacity:1;pointer-events:auto;transform:none}
.totop:hover{background:var(--red-dark);transform:translateY(-3px)}
.totop svg{width:22px;height:22px;fill:#fff}

/* ---------- Marquee ---------- */
.marquee{overflow:hidden;background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0}
.marquee-track{display:flex;gap:64px;width:max-content;animation:scrollX 26s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee img{height:62px;width:auto;object-fit:contain;filter:grayscale(1);opacity:.6;transition:.3s}
.marquee img:hover{filter:none;opacity:1}
.marquee span{display:flex;align-items:center;font-size:15px;letter-spacing:2.6px;text-transform:uppercase;color:var(--muted);white-space:nowrap}
@keyframes scrollX{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- Table (spec sheet) ---------- */
.spec-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:12px;box-shadow:var(--shadow);overflow:auto}
.spec-wrap img{width:100%}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .brand-mark{width:132px}
  nav.main a{padding:0 16px;font-size:16px}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1024px){
  .hero h1{font-size:44px}
  .page-banner h1{font-size:38px}
  .cat-grid,.features-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid,.gallery{grid-template-columns:repeat(2,1fr)}
  .gallery.docs{grid-template-columns:repeat(4,1fr)}
  .contact-cards,.stats-grid{grid-template-columns:repeat(2,1fr)}
  .about-split,.contact-layout{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .brand-name{--brand-size:17px}
}
@media (max-width:820px){
  /* 移动端隐藏顶部条:电话 / 邮箱 / 营业时间在窄屏上没有价值,只会挤占首屏 */
  .topbar{display:none}
  section{padding:66px 0}
  .sec-cta{padding-top:66px}
  .sec-cta.tight{padding-top:0}
  .sec-cta.after-band{padding-top:92px}
  .sec-head h2{font-size:30px}
  .hero{min-height:auto}
  .hero-inner{padding:78px 24px}
  .hero h1{font-size:34px}
  .hero h1 br{display:none}
  .hero .sub{font-size:17px}
  .kicker{font-size:11px;letter-spacing:1.6px;padding:7px 13px;margin-bottom:20px}
  .hero-stats{gap:22px 28px;margin-top:40px;display:grid;grid-template-columns:repeat(2,1fr)}
  .hero-stats strong{font-size:26px}
  .filters{gap:9px}
  .filters button{padding:10px 16px;font-size:13.5px}
  .page-banner{min-height:280px}
  .page-banner h1{font-size:30px}
  .page-banner .lead{font-size:16px}
  .prod-grid{grid-template-columns:repeat(2,1fr)}
  .gallery.docs{grid-template-columns:repeat(3,1fr)}
  nav.main{position:absolute;top:100%;left:0;right:0;height:auto;border-radius:0;flex-direction:column;align-items:stretch;
    padding:10px;display:none;background:var(--ink)}
  nav.main.open{display:flex;animation:fadeIn .25s ease both}
  nav.main a{height:54px;padding:0 20px;font-size:17px}
  nav.main a::before{display:none}
  nav.main a.active{background:rgba(200,16,46,.22)}
  /* 打平桌面端的 .mainbar.scrolled 收缩组:
     它的特异性 (0,2,0)/(0,2,1) 高于本段的 nav.main{height:auto} (0,1,1),
     而滚动过 30px 头部就会挂上 .scrolled —— 展开的 5 条菜单会被压回 52px,
     深色底只剩一条,链接溢出到首屏大图上、白字压图看不清。
     移动端头部本来就是 80px,不需要收缩,这里逐条显式还原。 */
  .mainbar.scrolled .mainbar-inner{height:80px}
  .mainbar.scrolled .brand-mark{width:112px}
  nav.main,.mainbar.scrolled nav.main{height:auto}
  .menu-btn{display:block}
  .mainbar-inner{height:80px}
  .brand-mark{width:112px}
  .brand-name{--brand-size:14px}
  .brand-name em{letter-spacing:2px}
  .about-img .badge{width:126px;height:126px;left:-8px;bottom:-16px}
  .cta-band{padding:40px 32px}
  .cta-band h3{font-size:26px}
  /* CTA 里的邮箱按钮:文案含 sales@ulfirefighting.com 这个 25 字符的不可断词,
     inline-flex 按钮的 min-content 被它撑到 ~231px,而窄屏下卡片内容区只有 192~257px
     —— 按钮会顶破卡片右侧内边距,并被 .cta-band/.art-cta 的 overflow:hidden 裁掉。
     下面把按钮从 min-content 上解绑,并留一个兜底断行,任何宽度都不再溢出。 */
  .cta-band .actions,.art-cta .actions{min-width:0}
  .cta-band .actions .btn,.art-cta .actions .btn{min-width:0;max-width:100%;overflow-wrap:anywhere}
  .lb{padding:60px 16px}
  .lb-prev{left:8px}.lb-next{right:8px}
  .lb-close{top:12px;right:12px}
  .lb-cap{font-size:14px;padding:0 16px}
  /* 文章页 */
  .page-banner.article{min-height:260px}
  .page-banner.article h1{font-size:28px}
  .page-banner.article .lead{font-size:15.5px}
  .art-cat{font-size:11px;letter-spacing:2px;padding:6px 12px;margin-bottom:12px}
  .art-sec{padding:44px 0 56px}
  .art-body{font-size:16px}
  .art-body > p:first-of-type{font-size:17px}
  .art-body h2{font-size:22px;margin:32px 0 12px}
  .art-body h3{font-size:18px}
  .art-body .keypoints{padding:20px 22px}
  .art-cta{padding:32px 26px}
  .art-cta h3{font-size:22px}
}
@media (max-width:560px){
  .brand{gap:10px}
  .brand-mark{width:92px}
  .mainbar.scrolled .brand-mark{width:92px}
  .brand-name{--brand-size:12px}
  .brand-name strong{letter-spacing:.2px}
  .brand-name em{letter-spacing:1.4px;margin-top:1px}
  .cat-grid,.features-grid,.prod-grid,.news-grid,.gallery,.contact-cards,.stats-grid,.certs-strip{grid-template-columns:1fr}
  .gallery.docs{grid-template-columns:repeat(2,1fr);gap:12px}
  .gallery.docs .cap{left:10px;right:10px;bottom:10px;font-size:11.5px}
  /* 页脚:原来四块竖着堆,手机上一个页脚就 1100px 高。
     改成「品牌整行 + Quick Links/Categories 并排 + 联系整行」,并收紧行距与标题间距。 */
  footer{padding:40px 0 0}
  footer h4{font-size:13px;letter-spacing:1.6px;margin-bottom:10px}
  footer p{font-size:14px;line-height:1.62}
  footer li{padding:3.5px 0;font-size:14.5px}
  footer .brand-foot{margin-bottom:13px}
  footer .brand-foot img{width:104px}
  .copy{font-size:12.5px;line-height:1.65;padding:14px 0}
  .footer-grid{grid-template-columns:1fr;gap:19px;padding-bottom:24px}
  /* Quick Links 五个短词改横向自动换行,省掉一整段竖向列表 */
  .footer-grid > div:nth-child(2) ul{display:flex;flex-wrap:wrap;gap:2px 20px}
  .footer-grid > div:nth-child(2) li{padding:0}
  .footer-grid > div:nth-child(2) li a{padding:4px 0}
  .cta-band{flex-direction:column;align-items:flex-start}
  /* 手机上这两个 CTA 按钮本来就各占一行,索性让它们撑满卡片、文字居中,
     并把左右内边距收到 20px —— 这样 sales@ulfirefighting.com 能整行放下,
     不会挤到卡片边缘(320px 窄屏实测文字区 184px,地址 15px 只需 169px)。 */
  .cta-band,.art-cta{padding-left:20px;padding-right:20px}
  .cta-band .actions,.art-cta .actions{width:100%}
  .cta-band .actions .btn,.art-cta .actions .btn{
    flex:1 1 100%;justify-content:center;padding:15px 16px;font-size:15px;
  }
  .marquee img{height:46px}
  /* 文章页 */
  .art-meta{gap:9px 16px;font-size:13px;margin-bottom:24px;padding-bottom:18px}
  .art-fig img{max-width:100%}
  .art-back{font-size:13px}
}

/* ---------- GTranslate language switcher ----------
   挂件由 CDN 脚本运行时注入,插件默认 top:20px / right:20px / z-index:999999,
   会压住吸顶头部、并盖在图片灯箱(lb, z-index:200)之上。这里只做必要收正,
   **字号、旗帜尺寸、内边距一律保持插件默认**,不再收小:
   - z-index 收到 150:必须高于吸顶头部(110)才不会被挡住 —— 按钮与导航同水平
     时正好落在头部区域内;同时低于图片灯箱(200),灯箱打开时仍能盖住按钮
   - top 由 main.js 动态对齐导航条垂直中线(mainbar 是 sticky,静止 96px /
     吸顶 80px 两种高度,固定值无法同时对齐);此处给兜底值,防 JS 未执行时压住头部
   - 语言列表改为向下弹出:插件默认排在按钮上方,展开时会把按钮整体往下顶,
     点击位置和按钮对不上
   移动端地球按钮在左下角,不与头部重叠,只收 z-index(防盖住灯箱)并让开 iPhone 手势条。 */
#gt_float_wrapper{top:150px!important;right:20px!important;z-index:150!important}
/* 按钮与导航同水平时是白底压在白色头部上,插件默认没有描边会糊成一片,
   补一道浅边与投影,让它在白底和深色 hero 上都立得住。 */
.gt_float_switcher{overflow:visible!important;border:1px solid var(--line)!important;
  border-radius:10px!important;box-shadow:0 3px 12px rgba(15,23,34,.14)!important}
.gt_float_switcher .gt_options{position:absolute!important;top:100%!important;right:0!important;left:auto!important;
  margin-top:6px!important;background:#fff!important;white-space:nowrap!important;
  border:1px solid var(--line)!important;border-radius:10px!important;
  box-shadow:0 10px 26px rgba(15,23,34,.18)!important;transform:none!important;opacity:1!important}
.gt_float_switcher .gt_options a:hover{background:var(--red)!important;color:#fff!important}
/* 移动端地球按钮:同样是 z-index 999999,会盖住图片灯箱;位置再让开 iPhone 手势条。 */
.gt_switcher_wrapper{z-index:105!important;left:16px!important;
  bottom:calc(16px + env(safe-area-inset-bottom,0px))!important}

/* ---------- FAQ (SEO/GEO) ---------- */
.faq{margin-top:42px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);overflow:hidden}
.faq>h2{margin:0;padding:18px 22px;font-size:1.15rem;border-bottom:1px solid var(--line);background:var(--soft)}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{cursor:pointer;padding:15px 22px;font-weight:600;color:var(--ink);list-style:none;position:relative;padding-right:46px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:1.35rem;font-weight:400;color:var(--red)}
.faq details[open] summary::after{content:"–"}
.faq details .faq-a{padding:0 22px 16px;color:var(--muted);line-height:1.7;margin:0}