/* ============================================================
   IDEAL Electrical 中国站
   视觉：品牌红 #FF3700 / 黑 #0B1114 / 白，工业目录排版
   ============================================================ */

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.7;
  color:var(--ink);background:var(--white);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.16;letter-spacing:-.02em;font-weight:800;text-wrap:balance}
h1{font-size:clamp(36px,4.8vw,66px)}
h2{font-size:clamp(26px,3vw,40px)}
h3{font-size:clamp(18px,1.5vw,22px)}
p{margin:0;text-wrap:pretty}
ul{margin:0;padding:0;list-style:none}
dl,dd,dt{margin:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.wrap--narrow{max-width:860px}
.skip{position:absolute;left:-999px;top:0;background:var(--red);color:var(--white);padding:10px 16px;z-index:200}
.skip:focus{left:12px;top:12px}
:focus-visible{outline:3px solid var(--red);outline-offset:2px}
::selection{background:var(--red);color:var(--white)}

/* ── topbar / header ─────────────────────────────────────── */
.topbar{background:var(--ink-2);color:#C7CDD3;font-size:12px;letter-spacing:.03em}
.topbar__inner{display:flex;justify-content:space-between;gap:16px;align-items:center;min-height:34px}
.topbar__tag{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar__links{display:flex;gap:22px;flex:none}
.topbar__links a:hover{color:var(--red)}

.header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.header__inner{display:flex;align-items:center;gap:24px;min-height:var(--header-h)}
.logo{display:flex;align-items:center;gap:10px;flex:none;line-height:1}
.logo__mark{width:30px;height:30px;background:var(--red);display:grid;place-items:center;position:relative}
.logo__mark span{display:block;width:10px;height:18px;background:var(--white);clip-path:polygon(0 0,100% 0,100% 34%,40% 34%,40% 66%,100% 66%,100% 100%,0 100%)}
.logo__word{font-size:20px;font-weight:900;letter-spacing:-.04em;line-height:.9;display:flex;flex-direction:column}
.logo__word small{font-size:8.5px;letter-spacing:.24em;font-weight:800;color:var(--steel);margin-top:4px}
.logo__cn{font-size:10.5px;font-weight:700;letter-spacing:.14em;color:var(--steel);border-left:1px solid var(--line);padding-left:9px;margin-left:2px}
.logo--footer{color:var(--white)}
.logo--footer .logo__word small{color:#9AA1A5}

.nav{display:flex;gap:0;margin-left:auto}
.nav__link{position:relative;padding:9px 11px;font-size:13.5px;font-weight:700;color:var(--slate);white-space:nowrap}
.nav__link:hover{color:var(--red)}
.nav__link.is-active{color:var(--red)}
.nav__link.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:0;height:3px;background:var(--red)}
.header__actions{display:flex;align-items:center;gap:8px;flex:none}
.header__cta{height:40px;padding:0 16px;font-size:13.5px}
.icon-btn{width:38px;height:38px;border:0;background:transparent;display:grid;place-items:center;border-radius:50%}
.icon-btn:hover{background:var(--paper)}
.icon-btn svg{width:19px;height:19px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round}
.searchbar .icon-btn{font-size:26px;line-height:1}
.menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);background:var(--white);padding:10px}
.menu-btn span{display:block;height:2px;background:var(--ink);margin:4.5px 0;transition:.2s}
.menu-btn[aria-expanded=true] span:first-child{transform:translateY(6.5px) rotate(45deg)}
.menu-btn[aria-expanded=true] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded=true] span:last-child{transform:translateY(-6.5px) rotate(-45deg)}

.searchbar{border-top:1px solid var(--line);background:var(--white)}
.searchbar__inner{display:flex;align-items:center;gap:12px;padding-top:15px;padding-bottom:15px}
.searchbar svg{width:20px;height:20px;fill:none;stroke:var(--steel);stroke-width:1.8;flex:none}
.searchbar input{flex:1;border:0;background:transparent;font-size:18px;outline:0;min-width:0}

/* ── buttons / pills / labels ────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;padding:0 18px;height:44px;font-size:14.5px;font-weight:800;letter-spacing:.01em;border-radius:var(--r);transition:background .16s,color .16s,border-color .16s,transform .16s}
.btn:active{transform:translateY(1px)}
.btn--lg{height:52px;padding:0 24px;font-size:15.5px}
.btn--sm{height:36px;padding:0 13px;font-size:13px}
.btn--full{width:100%}
.btn--red{background:var(--red);color:var(--white)}
.btn--red:hover{background:var(--red-deep)}
.btn--dark{background:var(--ink);color:var(--white)}
.btn--dark:hover{background:var(--slate)}
.btn--white{background:var(--white);color:var(--ink)}
.btn--white:hover{background:var(--paper-2)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--ink)}
.btn--ghost:hover{border-color:var(--ink);background:var(--paper)}
.btn--ghost-light{background:transparent;border-color:rgba(255,255,255,.4);color:var(--white)}
.btn--ghost-light:hover{border-color:var(--white);background:rgba(255,255,255,.08)}
.pill{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);padding:6px 12px;font-size:13px;font-weight:700;color:var(--slate);background:var(--white)}
.pill:hover{border-color:var(--red);color:var(--red)}
.pill span{font-family:var(--font-mono);font-size:11px;color:var(--muted)}
.pill--muted{background:var(--paper);color:var(--steel)}
.pill--sm{font-size:12px;padding:4px 9px}
.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.eyebrow{display:inline-block;font-size:11.5px;font-weight:900;letter-spacing:.18em;text-transform:uppercase;color:var(--red);margin-bottom:14px}
.eyebrow--red{color:var(--red)}
.eyebrow--light{color:#FF7A52}
.label{display:block;font-size:11px;font-weight:900;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:7px}
.text-link{font-size:13.5px;font-weight:800;color:var(--ink);border-bottom:2px solid var(--red);padding-bottom:3px;white-space:nowrap}
.text-link:hover{color:var(--red)}
.text-link--light{color:var(--white);border-color:var(--red)}

/* ── hero ────────────────────────────────────────────────── */
.hero{background:var(--ink);color:var(--white);position:relative;overflow:hidden;padding-top:clamp(34px,5vw,64px)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:64px 64px;pointer-events:none}
.hero__grid{position:relative;display:grid;grid-template-columns:1.03fr .97fr;gap:clamp(24px,4vw,60px);align-items:center;min-height:520px}
.hero__h1{font-size:clamp(46px,6vw,88px);letter-spacing:-.045em;line-height:.98;margin-bottom:24px}
.hero__sub{font-size:clamp(16px,1.5vw,19px);color:#C3C9CC;max-width:36em;line-height:1.75}
.hero__actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.hero__proof{display:flex;flex-wrap:wrap;gap:16px;margin-top:30px;font-size:11.5px;font-weight:700;letter-spacing:.06em;color:#9AA1A5}
.hero__proof span{display:flex;align-items:center;gap:8px}
.hero__proof span::before{content:"";width:6px;height:6px;background:var(--red)}
.hero__visual{position:relative;min-height:520px}
.hero__red{position:absolute;inset:10% 2% 4% 10%;background:var(--red)}
.hero__red::after{content:"WIRE / CONNECT";position:absolute;right:-1px;bottom:-28px;font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:#9AA1A5}
.hero__photo{position:absolute;inset:8% 8% 8% 4%;display:grid;place-items:center;z-index:1}
.hero__photo img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 30px 26px rgba(0,0,0,.28))}
.hero__card{position:absolute;right:0;bottom:2%;z-index:3;background:var(--white);color:var(--ink);padding:16px 18px;min-width:210px;max-width:260px;box-shadow:var(--shadow-hard)}
.hero__card-art{display:block;font-family:var(--font-mono);font-size:10px;color:var(--steel);margin-bottom:5px;letter-spacing:.04em}
.hero__card strong{display:block;font-size:14.5px;line-height:1.3}
.hero__card > span{display:block;font-size:12.5px;color:var(--steel);margin-top:5px}
.hero__card a{display:inline-block;margin-top:10px;font-size:12px;font-weight:800;color:var(--red)}
.hero__badge{position:absolute;left:0;top:2%;z-index:3;background:var(--red);color:var(--white);font-size:10px;font-weight:900;letter-spacing:.16em;line-height:1.2;padding:9px 11px;text-align:center}
.hero__stats{position:relative;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.16);margin-top:clamp(34px,5vw,62px)}
.stat{padding:22px 0 26px;border-right:1px solid rgba(255,255,255,.14)}
.stat:last-child{border-right:0}
.stat strong{display:block;font-size:clamp(28px,3vw,42px);font-weight:900;letter-spacing:-.04em;color:var(--white);line-height:1}
.stat span{display:block;font-size:12.5px;color:#9AA1A5;margin-top:7px;letter-spacing:.04em}

/* ── sections ────────────────────────────────────────────── */
.section{padding:clamp(52px,6vw,92px) 0}
.section--tight{padding:clamp(38px,4vw,62px) 0}
.section--paper{background:var(--paper)}
.section--dark{background:var(--ink);color:var(--white)}
.section__head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:32px}
.section__head > div{min-width:0}
.section__head h2{max-width:22em}
.section__head--light h2{color:var(--white)}
.section__head--light .text-link{color:var(--white)}
.page-head{padding:clamp(38px,4.5vw,64px) 0 clamp(34px,4vw,54px);border-bottom:1px solid var(--line);background:var(--white)}
.page-head--dark{background:var(--ink);color:var(--white);border-bottom:0}
.page-head--dark h1{color:var(--white)}
.page-head__intro{font-size:clamp(16px,1.4vw,18px);color:var(--steel);max-width:48em;line-height:1.75;margin-top:16px}
.page-head--dark .page-head__intro{color:#C3C9CC}
.page-head__chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.crumbs{display:flex;flex-wrap:wrap;gap:7px;font-size:12px;color:var(--muted);margin-bottom:20px}
.crumbs a:hover{color:var(--red)}
.crumbs span{color:var(--line-strong)}
.crumbs--light{color:#9AA1A5}
.crumbs--light a:hover{color:var(--red)}
.crumbs--light span{color:#5E666A}
.block__lead{font-size:15px;color:var(--steel);margin-bottom:18px;max-width:52em}
.lead{font-size:clamp(16px,1.5vw,19px);line-height:1.75;color:var(--steel);margin:18px 0 22px;max-width:38em}
.prose{font-size:16px;line-height:1.8;color:var(--slate);margin-bottom:16px;max-width:48em}
.prose--note{font-size:13px;color:var(--muted);line-height:1.7}
.prose--article h2{margin:34px 0 10px;font-size:clamp(21px,2vw,26px)}
.prose--article p{max-width:44em}
.prose--article ul{margin:10px 0 18px;padding-left:1.2em;list-style:disc}
.empty{text-align:center;padding:40px 0;color:var(--muted)}

/* ── category grid / cards ───────────────────────────────── */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cat-grid--wide{grid-template-columns:repeat(3,1fr)}
.cat-card{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);background:var(--white);overflow:hidden;transition:transform .18s,box-shadow .18s,border-color .18s}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-strong)}
.cat-card::before{content:"";position:absolute;left:0;top:0;width:0;height:4px;background:var(--red);transition:width .2s;z-index:2}
.cat-card:hover::before{width:100%}
.cat-card__img{aspect-ratio:16/11;background:linear-gradient(145deg,#F7F8F8,#E9EAEA);display:grid;place-items:center;padding:16px;overflow:hidden}
.cat-card__img img{max-height:100%;width:auto;object-fit:contain;transition:transform .25s}
.cat-card:hover .cat-card__img img{transform:scale(1.04)}
.cat-card__glyph{font-family:var(--font-mono);font-size:44px;font-weight:700;color:var(--line-strong)}
.cat-card__body{padding:20px 20px 22px;border-top:1px solid var(--line);position:relative;flex:1}
.cat-card__count{font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:.03em}
.cat-card__body h3{margin:7px 0 9px;font-size:19px}
.cat-card__body p{font-size:13.5px;color:var(--steel);line-height:1.65;max-width:30em}
.cat-card__arrow{position:absolute;right:18px;bottom:20px;font-size:18px;color:var(--red);transition:transform .18s}
.cat-card:hover .cat-card__arrow{transform:translateX(5px)}

/* ── product cards ───────────────────────────────────────── */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.p-card{display:flex;flex-direction:column;border:1px solid var(--line);background:var(--white);height:100%;transition:border-color .18s,transform .18s,box-shadow .18s}
.p-card:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:var(--shadow)}
.p-card__media{position:relative;aspect-ratio:1/1;background:var(--paper);display:grid;place-items:center;padding:18px;overflow:hidden}
.p-card__media img{width:100%;height:100%;object-fit:contain;transition:transform .25s}
.p-card:hover .p-card__media img{transform:scale(1.04)}
.p-card__cat{position:absolute;left:10px;top:10px;background:var(--white);border:1px solid var(--line);padding:3px 7px;font-size:10.5px;font-weight:700;color:var(--steel);max-width:calc(100% - 20px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.p-card__body{padding:16px 17px 18px;display:flex;flex-direction:column;flex:1;border-top:1px solid var(--line)}
.p-card__sku{font-family:var(--font-mono);font-size:10.5px;color:var(--red);letter-spacing:.02em;margin-bottom:5px;overflow-wrap:anywhere}
.p-card__body h3{font-size:16.5px;line-height:1.35;margin-bottom:7px}
.p-card__body p{font-size:12.5px;color:var(--steel);line-height:1.55;flex:1}
.p-card__meta{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:11.5px;color:var(--muted);font-weight:700}
.p-card__meta span{color:var(--red)}

/* ── models / series / applications ──────────────────────── */
.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.m-card{display:grid;grid-template-columns:150px 1fr;border:1px solid var(--line);background:var(--white);transition:border-color .18s,transform .18s}
.m-card:hover{border-color:var(--red);transform:translateY(-3px)}
.m-card__media{background:var(--paper);display:grid;place-items:center;padding:12px}
.m-card__media img{width:100%;height:130px;object-fit:contain}
.m-card__body{padding:16px 16px 16px 4px;display:flex;flex-direction:column}
.m-card__sku{font-family:var(--font-mono);font-size:11px;color:var(--red);margin-bottom:5px}
.m-card__body h3{font-size:15px;line-height:1.35;margin-bottom:5px}
.m-card__body p{font-size:12px;color:var(--steel);flex:1}
.m-card__link{font-size:11.5px;font-weight:800;color:var(--ink);margin-top:8px}
.series-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.16)}
.series-chip{background:var(--ink);padding:18px 18px 20px;transition:background .16s}
.series-chip:hover{background:#151D21}
.series-chip strong{display:block;font-size:16px;color:var(--white);margin-bottom:5px}
.series-chip span{font-size:11.5px;color:#9AA1A5}
.series-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.series-card{display:flex;flex-direction:column;border:1px solid var(--line);padding:22px 22px 20px;background:var(--white);transition:border-color .18s,transform .18s}
.series-card:hover{border-color:var(--red);transform:translateY(-3px)}
.series-card__count{font-family:var(--font-mono);font-size:11px;color:var(--muted);margin-bottom:10px}
.series-card h3{font-size:23px;margin-bottom:9px}
.series-card p{font-size:13.5px;color:var(--steel);line-height:1.65;flex:1}
.series-card__link{font-size:12px;font-weight:800;color:var(--red);margin-top:14px}
.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.app-grid--wide{grid-template-columns:repeat(2,1fr)}
.app-card{position:relative;display:flex;flex-direction:column;border:1px solid var(--line);padding:24px 22px 22px;background:var(--white);transition:border-color .18s,transform .18s}
.app-card:hover{border-color:var(--red);transform:translateY(-3px)}
.app-card__no{font-family:var(--font-mono);font-size:11px;color:var(--red);margin-bottom:12px;letter-spacing:.06em}
.app-card h3{font-size:20px;margin-bottom:8px}
.app-card p{font-size:13.5px;color:var(--steel);flex:1}
.app-card__link{font-size:12px;font-weight:800;color:var(--ink);margin-top:16px}
.app-facts{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.app-facts .fact{background:var(--white);padding:24px}
.app-facts .fact strong{font-size:44px}

/* ── split / facts ───────────────────────────────────────── */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,70px);align-items:center}
.split__copy{min-width:0}
.split__visual{min-width:0}
.check-list{margin:20px 0 26px;display:grid;gap:10px}
.check-list li{position:relative;padding-left:24px;font-size:14.5px;color:var(--slate)}
.check-list li::before{content:"";position:absolute;left:0;top:.65em;width:10px;height:2px;background:var(--red)}
.fact-stack{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.fact{background:var(--white);padding:20px 22px}
.fact strong{display:block;font-size:15px;color:var(--red);margin-bottom:5px}
.fact span{font-size:13.5px;color:var(--steel);line-height:1.6}
.fact-list{display:grid;gap:0;border-top:1px solid var(--line)}
.fact-list > div{display:grid;grid-template-columns:9em 1fr;gap:18px;padding:15px 0;border-bottom:1px solid var(--line)}
.fact-list dt{font-size:13px;font-weight:800;color:var(--ink)}
.fact-list dd{font-size:14.5px;color:var(--steel);line-height:1.7}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px);align-items:center}
.doc-preview{border:1px solid var(--line);background:var(--white)}
.doc-preview__row{display:grid;grid-template-columns:9em 1fr;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line);font-size:12.5px}
.doc-preview__row:last-child{border-bottom:0}
.doc-preview__row span{color:var(--red);font-weight:800;font-size:10.5px;letter-spacing:.06em;text-transform:uppercase}
.doc-preview__row strong{font-weight:600;overflow-wrap:anywhere}

/* ── articles / faq ──────────────────────────────────────── */
.article-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.article-card{display:flex;flex-direction:column;border:1px solid var(--line);padding:22px 20px;background:var(--white);transition:border-color .18s,transform .18s}
.article-card:hover{border-color:var(--red);transform:translateY(-3px)}
.article-card__tag{font-size:10.5px;font-weight:900;letter-spacing:.14em;text-transform:uppercase;color:var(--red);margin-bottom:12px}
.article-card h3{font-size:18px;line-height:1.4;margin-bottom:9px}
.article-card p{font-size:13px;color:var(--steel);line-height:1.65;flex:1}
.article-card__link{font-size:11.5px;font-weight:800;color:var(--ink);margin-top:14px}
.article-sources{margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.article-sources h2{font-size:19px;margin-bottom:10px}
.article-sources li{font-size:12.5px;color:var(--muted);overflow-wrap:anywhere;margin-bottom:6px}
.article-nav{display:flex;justify-content:space-between;gap:12px;margin-top:34px}
.faq{border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item summary{list-style:none;cursor:pointer;padding:20px 40px 20px 0;font-size:16px;font-weight:800;position:relative}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";position:absolute;right:4px;top:16px;font-size:24px;font-weight:400;color:var(--red)}
.faq__item[open] summary::after{content:"−"}
.faq__answer{padding:0 0 20px;max-width:52em}
.faq__answer p{font-size:14.5px;color:var(--steel);line-height:1.75;margin-bottom:8px}

/* ── product detail ──────────────────────────────────────── */
.product{padding:clamp(24px,3vw,40px) 0 0}
.product__grid{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(28px,4vw,60px);align-items:start;margin-top:8px}
.gallery{min-width:0}
.gallery__main{border:1px solid var(--line);background:var(--paper);aspect-ratio:1/1;display:grid;place-items:center;padding:clamp(16px,3vw,34px)}
.gallery__main img{width:100%;height:100%;object-fit:contain}
.gallery__thumbs{display:flex;gap:8px;margin-top:10px;overflow-x:auto;padding-bottom:2px}
.gallery__thumb{width:72px;height:72px;flex:none;border:1px solid var(--line);background:var(--white);padding:5px}
.gallery__thumb.is-active{border-color:var(--red)}
.gallery__thumb img{width:100%;height:100%;object-fit:contain}
.product__info{min-width:0;padding-top:6px}
.product__artline{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}
.product__art{font-family:var(--font-mono);font-size:11px;color:var(--red);letter-spacing:.04em}
.product__cat{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.product__info h1{font-size:clamp(28px,3.4vw,44px);line-height:1.12;margin-bottom:8px}
.product__en{font-size:13px;color:var(--muted);line-height:1.5;margin-bottom:10px;overflow-wrap:anywhere}
.product__tagline{font-size:clamp(16px,1.5vw,19px);font-weight:700;color:var(--slate);margin-bottom:16px}
.product__badges{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:18px}
.product__actions{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.product__summary{border-left:3px solid var(--red);padding:10px 0 10px 14px;margin-bottom:16px}
.product__summary p{font-size:13.5px;color:var(--steel);line-height:1.65}
.product__meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px}
.product__cols{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:clamp(24px,3.5vw,48px);align-items:start}
.product__main{min-width:0}
.product__aside{display:grid;gap:16px;position:sticky;top:calc(var(--header-h) + 16px)}
.block{margin-bottom:clamp(30px,4vw,48px)}
.block > h2{font-size:clamp(21px,2.1vw,28px);margin-bottom:14px}
.spec-card{border:1px solid var(--line);border-top:4px solid var(--red);padding:20px;background:var(--paper)}
.spec-card h2{font-size:18px;margin-bottom:14px}
.spec-card dl{display:grid;gap:0;margin-bottom:16px}
.spec-card dl > div{display:grid;grid-template-columns:8.5em 1fr;gap:10px;padding:8px 0;border-bottom:1px solid var(--line);font-size:12.5px}
.spec-card dt{color:var(--muted)}
.spec-card dd{font-weight:700;color:var(--ink);overflow-wrap:anywhere}
.aside-card{border:1px solid var(--line);padding:18px 20px;background:var(--white)}
.aside-card h3{font-size:16px;margin-bottom:8px}
.aside-card p{font-size:12.5px;color:var(--steel);line-height:1.65}
.sibling-list li{border-bottom:1px solid var(--line)}
.sibling-list li:last-child{border-bottom:0}
.sibling-list a{display:flex;justify-content:space-between;gap:10px;padding:8px 0;font-size:12.5px}
.sibling-list a:hover{color:var(--red)}
.sibling-list span{font-family:var(--font-mono);font-weight:700}
.sibling-list em{font-style:normal;color:var(--muted);font-size:11.5px}
.mono-title{font-family:var(--font-mono);letter-spacing:-.04em;overflow-wrap:anywhere;word-break:normal}

/* ── tables ──────────────────────────────────────────────── */
.table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.data-table{width:100%;min-width:680px;border-collapse:collapse;font-size:13.5px}
.data-table th{text-align:left;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:900;padding:10px 12px;border-bottom:2px solid var(--ink);background:var(--white);white-space:nowrap}
.data-table td{padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.5;overflow-wrap:anywhere}
.data-table tbody tr:hover{background:var(--paper)}
.data-table a:hover{color:var(--red)}
.data-table--specs{min-width:520px}
.data-table--specs td:first-child{width:38%;color:var(--muted)}
.mono-link{font-family:var(--font-mono);font-weight:700;overflow-wrap:anywhere}
.cell-spec{color:var(--steel);font-size:12.5px}
.row-link{font-size:12px;font-weight:800;color:var(--red);white-space:nowrap}
@media (min-width:1000px){
  .table-wrap{overflow:visible}
  .data-table{min-width:0}
  .data-table thead th{position:sticky;top:calc(var(--header-h) + 1px);z-index:5}
}
@media (max-width:999px){
  .data-table thead th{position:static}
}

/* ── documents ───────────────────────────────────────────── */
.doc-list{border-top:1px solid var(--line)}
.doc-list li{display:grid;grid-template-columns:minmax(80px,130px) minmax(0,1fr) 52px 90px auto;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);font-size:13px}
.doc-list__kind{font-size:10px;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--red);line-height:1.3}
.doc-list__name{font-weight:600;overflow-wrap:anywhere;line-height:1.45}
.doc-list__lang,.doc-list__meta{font-size:11px;color:var(--muted)}
.doc-list__dl{font-size:12px;font-weight:800;color:var(--red);white-space:nowrap;text-align:right}
.doc-list__dl:hover{text-decoration:underline}
.doc-group{padding-top:10px}

/* ── filters / selector / search ─────────────────────────── */
.filterbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;border:1px solid var(--line);padding:12px;background:var(--paper);margin-bottom:24px}
.filterbar__search{display:flex;align-items:center;gap:8px;background:var(--white);border:1px solid var(--line);padding:0 12px;height:40px;flex:1;min-width:200px}
.filterbar__search svg{width:17px;height:17px;fill:none;stroke:var(--steel);stroke-width:1.8;flex:none}
.filterbar__search input{border:0;outline:0;background:transparent;width:100%;font-size:14px}
.filterbar select,.selector select,.selector input{height:40px;border:1px solid var(--line);background:var(--white);padding:0 10px;font-size:13.5px;min-width:130px}
.filterbar__count{font-size:12px;color:var(--muted);font-family:var(--font-mono);margin-left:auto}
.grid-item{display:flex}
.grid-item > .p-card{width:100%}
.selector{display:grid;grid-template-columns:repeat(5,1fr) auto auto;gap:10px;align-items:end;border:1px solid var(--line);padding:16px;background:var(--paper)}
.selector__field{display:grid;gap:5px;min-width:0}
.selector__field label{font-size:11px;font-weight:800;color:var(--steel);letter-spacing:.04em}
.selector__field select,.selector__field input{width:100%;min-width:0}
.selector__count{margin:18px 0 10px;font-size:13px;color:var(--steel)}
.search-page{display:flex;gap:10px;margin-top:24px;max-width:720px}
.search-page input{flex:1;height:52px;border:1px solid var(--line-strong);padding:0 16px;font-size:17px;outline:0;min-width:0}
.search-page input:focus{border-color:var(--red)}
.search-results{display:grid;gap:0;border-top:1px solid var(--line)}
.search-result{display:grid;grid-template-columns:150px 1fr auto;gap:16px;padding:14px 0;border-bottom:1px solid var(--line);align-items:center}
.search-result__sku{font-family:var(--font-mono);font-size:12px;color:var(--red);overflow-wrap:anywhere}
.search-result h3{font-size:15px;line-height:1.4}
.search-result p{font-size:12px;color:var(--steel)}
.search-result__go{font-size:12px;font-weight:800;color:var(--ink)}

/* ── contact ─────────────────────────────────────────────── */
.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(28px,5vw,64px);align-items:start}
.contact-list{border-top:1px solid var(--line);margin:18px 0 24px}
.contact-list > div{display:grid;grid-template-columns:8em 1fr;gap:14px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
.contact-list dt{font-size:12px;color:var(--muted);font-weight:700}
.contact-list dd{font-weight:600;overflow-wrap:anywhere}
.contact-list a:hover{color:var(--red)}
.inquiry{border:1px solid var(--line);border-top:4px solid var(--red);padding:clamp(20px,3vw,30px);background:var(--paper)}
.inquiry h2{font-size:22px;margin-bottom:18px}
.field{display:grid;gap:6px;margin-bottom:14px}
.field label{font-size:12.5px;font-weight:800;color:var(--slate)}
.field label span{color:var(--red)}
.field input,.field textarea{width:100%;border:1px solid var(--line-strong);background:var(--white);padding:10px 12px;font-size:14.5px;outline:0}
.field input:focus,.field textarea:focus{border-color:var(--red)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.6}
.form-note.is-error{color:var(--red-deep)}
.form-note.is-ok{color:#1B7A2F}

/* ── CTA / footer ────────────────────────────────────────── */
.cta-band{background:var(--red);color:var(--white);padding:clamp(34px,4vw,52px) 0}
.cta-band__inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
.cta-band h2{font-size:clamp(22px,2.6vw,34px);max-width:24em;line-height:1.25}
.cta-band .eyebrow{color:rgba(255,255,255,.8)}
.cta-band__actions{display:flex;gap:10px;flex-wrap:wrap;flex:none}
.footer{background:var(--ink);color:#C3C9CC;padding:clamp(40px,5vw,64px) 0 24px;font-size:13px}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:clamp(24px,4vw,56px)}
.footer__brand p{margin-top:12px;line-height:1.7;max-width:30em}
.footer__operator{color:var(--white);font-weight:700}
.footer__note{font-size:11.5px;color:#8B9297}
.footer__col{display:flex;flex-direction:column;gap:7px;min-width:0}
.footer__col h4{color:var(--white);font-size:12px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:4px}
.footer__col a:hover{color:var(--red)}
.footer__contact span{font-size:12px;color:#9AA1A5}
.footer__bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:18px;font-size:11px;color:#8B9297}
.footer__legal{display:flex;gap:16px}
.footer__legal a:hover{color:var(--red)}
.footer__source{max-width:40em}

/* ── responsive ──────────────────────────────────────────── */
@media (max-width:1180px){
  .nav__link{padding:9px 8px;font-size:13px}
  .header__cta{display:none}
  .cat-grid,.product-grid{grid-template-columns:repeat(3,1fr)}
  .article-grid{grid-template-columns:repeat(2,1fr)}
  .series-strip{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:1024px){
  :root{--header-h:70px}
  .hero__grid{grid-template-columns:1fr;min-height:0;padding-bottom:20px}
  .hero__visual{min-height:400px;order:2}
  .hero__photo{inset:4% 10% 6% 6%}
  .hero__red{inset:8% 0 8% 12%}
  .hero__card{bottom:0}
  .hero__stats{margin-top:30px}
  .split,.two-col,.contact-grid{grid-template-columns:1fr}
  .product__grid{grid-template-columns:1fr}
  .product__cols{grid-template-columns:1fr}
  .product__aside{position:static}
  .model-grid,.series-grid{grid-template-columns:repeat(2,1fr)}
  .app-grid{grid-template-columns:repeat(2,1fr)}
  .series-strip{grid-template-columns:repeat(2,1fr)}
  .selector{grid-template-columns:repeat(3,1fr)}
  .selector .btn{width:100%}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--white);border-bottom:1px solid var(--line);padding:10px var(--pad) 18px;flex-direction:column;gap:0;box-shadow:0 20px 40px rgba(0,0,0,.08)}
  .nav.is-open{display:flex}
  .nav__link{padding:12px 0;border-bottom:1px solid var(--line);font-size:15px}
  .nav__link.is-active::after{display:none}
  .menu-btn{display:block}
  .header__inner{gap:16px}
  .topbar__tag{font-size:11px}
  .topbar__links{gap:12px;font-size:11px}
  .cat-grid,.product-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid--wide{grid-template-columns:repeat(2,1fr)}
  .section__head{align-items:flex-start;flex-direction:column;gap:10px}
  .doc-list li{grid-template-columns:1fr auto;gap:4px 12px}
  .doc-list__kind,.doc-list__lang,.doc-list__meta{grid-column:1}
  .doc-list__dl{grid-column:2;grid-row:1 / span 3;align-self:center}
  .cta-band__inner{flex-direction:column;align-items:flex-start}
  .search-result{grid-template-columns:1fr auto;gap:6px 12px}
  .search-result__sku{grid-column:1}
  .search-result__go{grid-column:2;grid-row:1 / span 2}
}
@media (max-width:640px){
  :root{--pad:18px}
  body{font-size:15.5px}
  .topbar__tag{display:none}
  .topbar__inner{justify-content:center}
  .hero__h1{font-size:clamp(38px,11vw,56px)}
  .hero__stats{grid-template-columns:1fr 1fr}
  .stat{border-bottom:1px solid rgba(255,255,255,.14)}
  .stat:nth-child(2n){border-right:0}
  .cat-grid,.product-grid,.model-grid,.series-grid,.app-grid,.article-grid,.cat-grid--wide,.app-grid--wide{grid-template-columns:1fr}
  .series-strip{grid-template-columns:1fr}
  .m-card{grid-template-columns:120px 1fr}
  .selector{grid-template-columns:1fr 1fr}
  .selector__field:nth-child(n+4){grid-column:span 2}
  .filterbar__search{flex-basis:100%}
  .filterbar select{flex:1;min-width:0}
  .filterbar__count{margin-left:0;width:100%}
  .field-row{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column}
  .article-nav{flex-direction:column}
  .hero__visual{min-height:330px}
  .hero__card{max-width:190px;padding:12px 14px}
  .hero__badge{left:auto;right:0;top:0}
  .doc-list li{grid-template-columns:1fr}
  .doc-list__dl{grid-column:1;grid-row:auto;text-align:left}
  .fact-list > div{grid-template-columns:1fr;gap:4px}
  .contact-list > div{grid-template-columns:1fr;gap:4px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* ── category / series hero ─────────────────────────────── */
.hero__copy{position:relative;z-index:2;min-width:0}
.cat-hero{padding:clamp(28px,4vw,48px) 0;border-bottom:1px solid var(--line);background:var(--paper)}
.cat-hero--series{background:var(--white)}
.cat-hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:clamp(28px,5vw,64px);align-items:center}
.cat-hero__desc{font-size:clamp(16px,1.5vw,18px);color:var(--steel);line-height:1.75;max-width:44em;margin-top:14px}
.cat-hero__actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.cat-hero__img{border:1px solid var(--line);background:var(--white);aspect-ratio:4/3;display:grid;place-items:center;padding:clamp(16px,3vw,32px);overflow:hidden}
.cat-hero__img img{width:100%;height:100%;object-fit:contain}
.cat-nav{margin-top:8px}
.cat-nav h2{font-size:20px;margin-bottom:14px}
.contact-info{min-width:0}
.product--model .product__info h1{letter-spacing:-.03em}
@media (max-width:1024px){
  .cat-hero__grid{grid-template-columns:1fr}
  .cat-hero__img{order:2;max-height:420px}
}

/* 确保 hidden 属性胜过组件 display */
[hidden]{display:none !important}