/* ============================================================
   SAMANSTAR v4 — brand palette + more visual layout
   Brand: navy #122337, accent amber #F59E0B (from the logo kit)
   Loaded after style.css + v2.css + v3.css
   ============================================================ */

/* ---------- 1. Brand tokens ---------- */
:root{
  --brand:#122337;
  --brand-d:#0a1522;
  --brand-l:#eef2f7;
  --amber:#F59E0B;
  --amber-d:#b45309;
  --amber-l:#fef3c7;
  --ink:#111d2e;
  --ink-2:#22314b;
  --muted:#5b6b80;
  --muted-2:#8494a6;
  --line:#e4e8ee;
  --line-2:#cfd7e0;
  --bg:#f5f7fa;
  --bg-2:#eef2f7;
  --sh-md:0 16px 36px -20px rgba(10,21,34,.30);
  --sh-lg:0 32px 64px -32px rgba(10,21,34,.42);
}

/* amber accents */
.eyebrow{color:var(--amber-d);background:var(--amber-l);border-color:#fcd34d}
.sect-head span.kicker{color:var(--amber-d)}
.sect-head h2::after{background:linear-gradient(90deg,var(--amber),var(--brand))}
.arrow-link{color:var(--amber-d)}
.arrow-link:hover{color:var(--amber)}
.hd__link.is-active,.hd__item.is-open > .hd__link{color:var(--brand);border-bottom-color:var(--amber)}
.side__link.is-active{background:var(--brand-l);color:var(--brand-d);border-left-color:var(--amber)}
.check-list svg{color:var(--amber)}
.feature__icon{background:linear-gradient(150deg,#fff8ec,#fdf0d8);border-color:#fbe3b4;color:var(--amber-d)}
.fgroup > h4,.spectable th{color:var(--brand)}
.spectable th{background:var(--brand-l)}
.filters__head{background:var(--brand)}
.kv b{color:var(--brand)}
.about-stats b{color:var(--brand)}
.about-stats b em{color:var(--amber);font-style:normal}

.btn--amber{--btn-bg:var(--amber);--btn-fg:#122337;font-weight:800}
.btn--amber:hover{--btn-bg:#e08c04}

/* ---------- 2. Header: amber logo chip + topbar language button ---------- */
.hd__logo img{width:auto;height:42px}
.footer-brand--chip{
  display:inline-flex;align-items:center;padding:14px 18px;
  background:#fff;border-radius:14px;margin-bottom:18px;
}
.footer-brand--chip img{width:auto;height:40px;display:block}
.langbtn{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.30);
  background:none;color:#dbe6f2;font-size:.74rem;font-weight:800;letter-spacing:.08em;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.langbtn:hover{background:rgba(255,255,255,.14);color:#fff}
.langbtn.is-current{background:var(--amber);border-color:var(--amber);color:#122337}
.topbar__list .langbtn{margin-left:4px}

/* ---------- 3. Visual hero (navy band) ---------- */
.hero-v4{
  position:relative;isolation:isolate;overflow:hidden;color:#dfe8f2;
  background:radial-gradient(1000px 520px at 82% -12%,#1b3550 0%,transparent 62%),
             radial-gradient(700px 420px at 4% 108%,#16304a 0%,transparent 62%),
             linear-gradient(160deg,#122337 0%,#0a1522 100%);
  padding-top:clamp(34px,4.2vw,62px);padding-bottom:clamp(36px,4.4vw,64px);
}
.hero-v4::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 76%);
  -webkit-mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 76%);
}
.hero-v4 .container{position:relative;z-index:1}
.hero-v4 h1{color:#fff;font-size:clamp(1.9rem,1.25rem + 2.2vw,3.1rem)}
.hero-v4 h1 .accent{color:var(--amber)}
.hero-v4 .hero__lead{color:#9fb3c8;margin-top:18px;max-width:56ch}
.hero-v4 .eyebrow{color:var(--amber);background:rgba(245,158,11,.12);border-color:rgba(245,158,11,.35)}
.hero-v4 .hero--badges li{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.16);color:#cfe0f0}
.hero-v4 .hero--badges svg{color:var(--amber)}
.hero-v4 .form-note{color:#7f96ad!important}
.hero-v4__stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
  margin-top:clamp(28px,3.2vw,46px);padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
}
.hero-v4__stats b{display:block;font-size:clamp(1.3rem,1rem + 1vw,1.9rem);color:#fff;font-weight:800;line-height:1}
.hero-v4__stats b em{color:var(--amber);font-style:normal}
.hero-v4__stats span{display:block;margin-top:6px;font-size:.78rem;color:#8fa6bd}
@media (max-width:640px){.hero-v4__stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- 4. Compact sections (shorter home page) ---------- */
.section--tight{padding-block:clamp(34px,3.6vw,56px)}
.sect-head{margin-bottom:clamp(20px,2.6vw,34px)}

/* ---------- 5. Bigger, more visual category tiles ---------- */
.cat-tile--big .cat-tile__media{aspect-ratio:16/11}
.cat-tile--big .cat-tile__media img{inset:22px}
.cat-tile--big .cat-tile__body{padding:22px 24px 26px}
.cat-tile--big .cat-tile__body h3{font-size:1.12rem}
.cat-tile:hover .cat-tile__media img{transform:scale(1.07)}

/* dark stat band */
.statband{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:radial-gradient(700px 380px at 86% 0%,#1b3550 0%,transparent 62%),linear-gradient(150deg,#122337,#0a1522);
  padding:clamp(24px,3vw,38px);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;
}
.statband b{display:block;font-size:clamp(1.4rem,1.05rem + 1.2vw,2rem);font-weight:800;color:#fff;line-height:1}
.statband b em{color:var(--amber);font-style:normal}
.statband span{display:block;margin-top:7px;font-size:.79rem;color:#8fa6bd}
@media (max-width:760px){.statband{grid-template-columns:repeat(2,1fr)}}

/* ---------- 6. News cards ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--sh-md);border-color:#c9d6e4}
.news-card__media{
  aspect-ratio:16/9;position:relative;overflow:hidden;
  background:linear-gradient(150deg,#122337,#1b3550);
  display:grid;place-items:center;
}
.news-card__media img{width:58%;height:auto;opacity:.95}
.news-card__tag{
  position:absolute;top:12px;left:12px;font-size:.68rem;font-weight:800;letter-spacing:.09em;
  text-transform:uppercase;padding:5px 10px;border-radius:999px;
  background:var(--amber);color:#122337;
}
.news-card__body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.news-card__date{font-size:.74rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--muted-2)}
.news-card__body h3{margin-top:9px;font-size:1rem;line-height:1.4}
.news-card__body p{margin-top:9px;font-size:.875rem;color:var(--muted);flex:1}
.news-card__body .arrow-link{margin-top:14px}
@media (max-width:900px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.news-grid{grid-template-columns:1fr}}

/* ---------- 7. Expandable product rows ---------- */
.prow{grid-template-columns:132px minmax(0,1fr) auto}
.prow__head{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.prow__toggle{
  margin-left:auto;font-size:.78rem;font-weight:800;letter-spacing:.04em;
  color:var(--amber-d);background:none;border:0;cursor:pointer;white-space:nowrap;
  display:inline-flex;align-items:center;gap:5px;
}
.prow__toggle svg{width:12px;height:12px;transition:transform .22s var(--ease)}
.prow.is-open .prow__toggle svg{transform:rotate(180deg)}
.prow__detail{
  grid-column:1/-1;display:none;
  border-top:1px solid var(--line);margin-top:16px;padding-top:16px;
}
.prow.is-open .prow__detail{display:block}
.prow__detail .spectable td{padding:8px 12px;font-size:.86rem}

/* ---------- 8. Solutions / service cards ---------- */
.svc{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.svc:hover{transform:translateY(-5px);box-shadow:var(--sh-md);border-color:#c9d6e4}
.svc__icon{
  width:48px;height:48px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(150deg,#122337,#1b3550);color:var(--amber);
}
.svc__icon svg{width:23px;height:23px}
.svc h3{font-size:1.02rem}
.svc p{font-size:.89rem;color:var(--muted)}
.svc ul{margin-top:2px;display:grid;gap:7px}
.svc li{display:flex;gap:8px;align-items:flex-start;font-size:.85rem;color:var(--ink-2)}
.svc li svg{width:15px;height:15px;flex:none;margin-top:3px;color:var(--amber)}

/* ---------- 9. Company / about strip ---------- */
.about-strip{
  display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(24px,3.2vw,50px);align-items:center;
}
.about-strip__facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}
.about-strip__facts div{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:14px 16px}
.about-strip__facts dt{font-size:.72rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--muted-2)}
.about-strip__facts dd{margin:6px 0 0;font-size:.95rem;font-weight:700;color:var(--ink)}
@media (max-width:900px){.about-strip{grid-template-columns:1fr}}

/* ---------- 10. Misc ---------- */
.emailrow{display:flex;flex-wrap:wrap;gap:14px;margin-top:18px}
.emailrow a{font-size:.92rem;font-weight:700;color:var(--brand)}
.emailrow a:hover{color:var(--amber-d)}
.tag-amber{
  display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  color:#122337;background:var(--amber);border-radius:999px;padding:4px 10px;
}

/* real-datasheet details on the product page */
.pdp__oem{display:block;margin-top:6px;font-size:.82rem;color:var(--muted)}
.pdp__oem b{color:var(--ink-2)}
.tech__box{display:grid;place-items:center;overflow:hidden;text-decoration:none}
.tech__box img{border-radius:var(--r-sm)}

/* ---------- 11. Top bar: contact details emphasised ---------- */
.topbar{background:#0a1c2e;border-bottom:1px solid rgba(255,255,255,.08)}
.topbar__in{height:46px}
.topbar__list{gap:22px}
.topbar__list--contact li{font-weight:700;color:#eaf2ff}
.topbar__list--contact a{color:#fff}
.topbar__list--contact > li > svg{color:var(--amber);width:15px;height:15px}
.topbar__list--meta{color:#9db2c9;font-weight:500}
.topbar__hot{display:inline-flex;align-items:center;gap:8px;font-weight:800!important;color:#7ee2a8!important}
.topbar__hot svg{width:16px;height:16px;color:#7ee2a8}
.topbar__hot:hover{color:#fff!important}
@media (max-width:900px){
  .topbar__list--meta{display:none}
  .topbar__in{height:40px}
}

/* ---------- 12. Header search ---------- */
.hd__search{
  width:40px;height:40px;border-radius:11px;display:grid;place-items:center;flex:none;
  color:var(--ink);background:none;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.hd__search svg{width:19px;height:19px}
.hd__search:hover{background:var(--brand-l);color:var(--brand-d)}

.searchbox{
  position:fixed;inset:0;z-index:130;display:none;
  background:rgba(8,15,30,.74);backdrop-filter:blur(7px);
  padding:clamp(14px,6vh,80px) 18px;overflow-y:auto;
}
.searchbox.is-open{display:block}
.searchbox__panel{
  max-width:780px;margin:0 auto;background:#fff;border-radius:var(--r-xl);
  box-shadow:var(--sh-lg);padding:clamp(18px,2.4vw,28px);
}
.searchbox__bar{display:flex;gap:12px;align-items:center}
.searchbox__bar input{
  flex:1;min-width:0;padding:14px 18px;border-radius:var(--r-md);
  border:1px solid var(--line-2);background:#fbfdff;font-size:1.05rem;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease);
}
.searchbox__bar input:focus{outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(11,92,171,.13)}
.searchbox__close{
  width:44px;height:44px;border-radius:12px;flex:none;font-size:1.7rem;line-height:1;
  color:var(--muted);background:var(--bg);cursor:pointer;transition:background-color .2s var(--ease),color .2s var(--ease);
}
.searchbox__close:hover{background:var(--line);color:var(--ink)}
.searchbox__hint{margin-top:12px;font-size:.82rem;color:var(--muted-2)}
.searchbox__hint b{color:var(--brand-d)}
.searchbox__results{margin-top:14px;display:grid;gap:8px;max-height:56vh;overflow-y:auto}
.sres{
  display:flex;gap:14px;align-items:center;padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--r-md);background:#fff;
  transition:border-color .18s var(--ease),background-color .18s var(--ease),transform .18s var(--ease);
}
.sres:hover{border-color:#c9dcf1;background:var(--brand-l);transform:translateX(3px)}
.sres img{width:54px;height:54px;object-fit:contain;background:#f7fafd;border-radius:9px;flex:none;padding:4px}
.sres b{display:block;font-size:.94rem;color:var(--ink);line-height:1.35}
.sres span{display:block;font-size:.78rem;color:var(--muted);margin-top:3px}
.sres em{
  margin-left:auto;flex:none;font-style:normal;font-size:.71rem;font-weight:800;letter-spacing:.06em;
  color:var(--brand-d);background:var(--brand-l);border-radius:999px;padding:4px 10px;white-space:nowrap;
}
.searchbox__empty{padding:26px 4px;color:var(--muted);font-size:.92rem}
@media (max-width:640px){
  .sres img{width:42px;height:42px}
  .sres em{display:none}
}

/* ---------- 13. Slide-in reveals ----------
   Utility classes, plus an automatic rule: inside a two column split the image
   column always slides in from its own side, text columns keep the fade-up. */
.js .reveal-left,.js .reveal-right{opacity:0;transition:opacity .82s var(--ease),transform .82s var(--ease)}
.js .reveal-left{transform:translateX(-52px)}
.js .reveal-right{transform:translateX(52px)}
.js .reveal-left.is-in,.js .reveal-right.is-in{opacity:1;transform:none}

.js .split .split__media.reveal,
.js .split .split__media > .reveal,
.js .split .media-frame.reveal,
.js .about-blk__art.reveal,
.js .about-blk .media-frame.reveal{
  opacity:0;transform:translateX(58px);
  transition:opacity .85s var(--ease),transform .85s var(--ease);
}
.js .split--rev .split__media.reveal,
.js .split--rev .split__media > .reveal,
.js .split--rev .media-frame.reveal{
  transform:translateX(-58px);
}
.js .split .split__media.reveal.is-in,
.js .split .split__media > .reveal.is-in,
.js .split .media-frame.reveal.is-in,
.js .about-blk__art.reveal.is-in,
.js .about-blk .media-frame.reveal.is-in{opacity:1;transform:none}

@media (max-width:900px){
  .js .split .split__media.reveal,
  .js .split .split__media > .reveal,
  .js .split .media-frame.reveal,
  .js .split--rev .split__media.reveal,
  .js .split--rev .split__media > .reveal,
  .js .split--rev .media-frame.reveal,
  .js .about-blk__art.reveal{transform:translateY(24px)}
}

@media (prefers-reduced-motion:reduce){
  .js .reveal-left,.js .reveal-right,
  .js .split .split__media.reveal,
  .js .split .split__media > .reveal,
  .js .split .media-frame.reveal,
  .js .about-blk__art.reveal{opacity:1!important;transform:none!important}
}

/* ---------- 14. Brand pages ----------
   Lenses-by-brand landing pages list every configuration of one manufacturer,
   grouped under a category heading. */
.brand-group{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin:38px 0 14px;padding-bottom:12px;border-bottom:2px solid var(--line);
  font-size:1.22rem;font-weight:800;letter-spacing:-.01em;color:var(--ink);
}
.brand-group:first-child{margin-top:0}
.brand-group a{color:var(--ink);text-decoration:none}
.brand-group a:hover{color:var(--brand-d)}
.brand-group span{
  font-size:.76rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase;
  color:var(--brand-d);background:var(--brand-l);border-radius:999px;padding:5px 12px;
}

/* ---------- 15. Rich text (product overview from the CMS) ---------- */
.prose{max-width:74ch;color:var(--muted);font-size:.98rem;line-height:1.72}
.prose > * + *{margin-top:14px}
.prose h3,.prose h4{color:var(--ink);font-size:1.06rem;font-weight:800;margin-top:26px}
.prose strong{color:var(--ink);font-weight:700}
.prose ul,.prose ol{padding-left:1.35em}
.prose li{margin-top:7px;list-style:disc}
.prose ol li{list-style:decimal}
.prose blockquote{
  margin:18px 0;padding:14px 18px;border-left:3px solid var(--brand);
  background:var(--brand-l);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-2);
}


/* ---------- 16. 产品图库：超宽的图片不能撑破版面 ----------
   .pdp 是 CSS Grid，两个格子的 min-width 默认是 auto —— 遇到很宽的图片
   （比如机械尺寸图）会把整列撑开，图片就溢出到右边盖住规格卡片。
   把 min-width 归零 + 给外框加裁剪，宽图会被等比缩到框内。 */
.pdp > *{min-width:0}
.pdp__gallery{min-width:0}
.pdp__main{min-width:0;overflow:hidden}
.pdp__main img{display:block;max-width:100%;max-height:100%}
.pdp__thumbs div{overflow:hidden}
.pdp__thumbs img{max-width:100%;max-height:100%}