/* ==========================================================================
   Optical Comms Store — global stylesheet
   Design system: deep navy + signal blue, Barlow / IBM Plex Sans / Plex Mono
   ========================================================================== */

:root{
  --navy-900:#06172E;
  --navy-800:#0B2545;
  --navy-700:#123A63;
  --navy-600:#1B4A7A;

  --blue-700:#0F5CC4;
  --blue-600:#1B6FE0;
  --blue-500:#4DA3FF;
  --blue-100:#E3EFFD;
  --blue-50:#F2F7FE;

  --red-600:#D93A3A;
  --red-100:#FBEAEA;

  --green-600:#1F8A4C;

  --ink-900:#0E1B2A;
  --ink-700:#28394B;
  --ink-500:#5B6B7C;
  --ink-400:#8295A6;

  --line-300:#CFD8E2;
  --line-200:#E3E8EF;
  --line-100:#EEF1F5;

  --bg-50:#F6F8FB;
  --bg-100:#EDF1F6;

  --font-display:'Barlow','Segoe UI',Arial,sans-serif;
  --font-body:'IBM Plex Sans',-apple-system,'Segoe UI',Arial,sans-serif;
  --font-mono:'IBM Plex Mono',Consolas,monospace;

  --radius-s:4px;
  --radius-m:8px;
  --radius-l:14px;

  --shadow-1:0 1px 2px rgba(11,37,69,.06),0 1px 3px rgba(11,37,69,.05);
  --shadow-2:0 8px 24px rgba(11,37,69,.10);
  --shadow-3:0 18px 44px rgba(11,37,69,.16);

  --ease:cubic-bezier(.4,0,.2,1);
  --container:1280px;
  --head-h:70px;
  --nav-h:48px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.65;
  color:var(--ink-900);
  background:#fff;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--blue-600);text-decoration:none}
a:hover{color:var(--blue-700)}
h1,h2,h3,h4,h5{font-family:var(--font-display);font-weight:700;line-height:1.2;margin:0 0 12px;color:var(--navy-800);letter-spacing:-.01em;text-wrap:balance}
h1{font-size:clamp(34px,4.6vw,54px)}
h2{font-size:clamp(28px,3vw,42px)}
h3{font-size:22px}
h4{font-size:18px;font-weight:600}
p{text-wrap:pretty;margin:0 0 16px;color:var(--ink-700)}
ul,ol{margin:0 0 16px;padding-left:20px;color:var(--ink-700)}
li+li{margin-top:6px}
hr{border:0;border-top:1px solid var(--line-200);margin:32px 0}
code,.mono{font-family:var(--font-mono);font-size:.92em}
strong{color:var(--ink-900)}
:focus-visible{outline:2px solid var(--blue-600);outline-offset:2px;border-radius:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--navy-800);color:#fff;padding:10px 16px;z-index:200}
.skip-link:focus{left:0}

/* ---------- layout ---------- */
.container{max-width:var(--container);margin:0 auto;padding:0 28px}
.section{padding:104px 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--bg-50)}
.section--navy{background:var(--navy-800);color:#C9D6E4}
.section--navy h2,.section--navy h3{color:#fff}
.section--navy p{color:#A9BDD1}
.section-head{max-width:760px;margin:0 auto 56px;text-align:center}
.section-head--left{margin:0 0 40px;text-align:left}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);font-weight:600;font-size:13px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--blue-600);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--blue-600)}
.section-head--center .eyebrow::after{content:"";width:22px;height:2px;background:var(--blue-600)}
.section-sub{font-size:17px;color:var(--ink-500);margin:0}
.lead{font-size:19px;color:var(--ink-700)}
.grid{display:grid;gap:24px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g5{grid-template-columns:repeat(5,1fr)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-display);font-weight:600;font-size:16px;
  letter-spacing:.02em;line-height:1;padding:0 26px;height:48px;
  border-radius:6px;border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;text-align:center;
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--blue-600);color:#fff}
.btn--primary:hover{background:var(--blue-700);color:#fff;box-shadow:var(--shadow-2)}
.btn--navy{background:var(--navy-800);color:#fff}
.btn--navy:hover{background:var(--navy-700);color:#fff}
.btn--outline{background:transparent;color:var(--blue-600);border-color:var(--blue-600)}
.btn--outline:hover{background:var(--blue-50);color:var(--blue-700)}
.btn--outline-white{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.btn--outline-white:hover{background:rgba(255,255,255,.12);color:#fff}
.btn--ghost{background:transparent;color:var(--ink-700);border-color:var(--line-300)}
.btn--ghost:hover{border-color:var(--navy-800);color:var(--navy-800)}
.btn--light{background:#fff;color:var(--navy-800)}
.btn--light:hover{background:var(--blue-50)}
.btn--lg{height:52px;padding:0 30px;font-size:16px}
.btn--sm{height:36px;padding:0 14px;font-size:14px;border-radius:5px}
.btn--block{width:100%}
.btn[disabled]{opacity:.45;cursor:not-allowed;pointer-events:none}
.link-arrow{font-weight:600;display:inline-flex;align-items:center;gap:6px}
.link-arrow::after{content:"";width:6px;height:6px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);transition:transform .18s var(--ease)}
.link-arrow:hover::after{transform:translateX(3px) rotate(-45deg)}

/* ---------- top bar ---------- */
.topbar{background:var(--navy-900);color:#8FA3B8;font-size:13px}
.topbar__in{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px}
.topbar__list{display:flex;gap:20px;list-style:none;margin:0;padding:0}
.topbar__list li{display:flex;align-items:center;gap:6px;margin:0}
.topbar a{color:#C9D6E4}
.topbar a:hover{color:#fff}
.topbar__tools{display:flex;align-items:center;gap:14px}
.topbar select{
  background:transparent;border:0;color:#C9D6E4;font:inherit;cursor:pointer;padding:0;
}
.topbar select option{color:#111}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:90;background:#fff;border-bottom:1px solid var(--line-200);box-shadow:0 1px 0 rgba(11,37,69,.02)}
.header-main{display:flex;align-items:center;gap:40px;height:var(--head-h)}
.brand{display:flex;align-items:center;flex:none}
.brand img{height:46px;width:auto}
.search{position:relative;flex:1;max-width:680px}
.search__box{display:flex;height:50px;border:2px solid var(--navy-800);border-radius:8px;overflow:hidden;background:#fff;transition:border-color .18s var(--ease),box-shadow .18s var(--ease)}
.search__box:focus-within{border-color:var(--blue-600);box-shadow:0 0 0 3px rgba(27,111,224,.12)}
.search__box input{
  flex:1;border:0;padding:0 18px;font:inherit;font-size:16px;color:var(--ink-900);
  min-width:0;
}
.search__box input::placeholder{color:var(--ink-400)}
.search__box select{
  border:0;border-right:1px solid var(--line-200);background:var(--bg-50);
  font:inherit;font-size:14.5px;color:var(--ink-500);padding:0 12px;cursor:pointer;max-width:160px;
}
.search__btn{
  border:0;background:var(--navy-800);color:#fff;padding:0 24px;cursor:pointer;
  font:inherit;font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px;
  transition:background .18s var(--ease);
}
.search__btn:hover{background:var(--blue-600)}
.search__hot{
  display:flex;gap:18px;font-size:13px;color:var(--ink-400);margin-top:8px;flex-wrap:wrap;
}
.search__hot a{color:var(--ink-400)}
.search__hot a:hover{color:var(--blue-600)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.hact{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:8px 14px;border-radius:8px;color:var(--ink-700);font-size:13.5px;position:relative;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.hact:hover{background:var(--bg-50);color:var(--navy-800)}
.hact svg{width:24px;height:24px;stroke:currentColor;fill:none;stroke-width:1.6}
.hact__badge{
  position:absolute;top:2px;right:6px;background:var(--red-600);color:#fff;
  font-size:11px;font-weight:600;line-height:1;min-width:17px;height:17px;border-radius:9px;
  display:flex;align-items:center;justify-content:center;padding:0 4px;
}

/* ---------- main nav + mega ---------- */
.mainnav{background:#fff;border-top:1px solid var(--line-100)}
.mainnav__in{display:flex;align-items:center;height:var(--nav-h);gap:4px}
.mainnav__list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0;height:100%}
.mainnav__list>li{position:relative;height:100%}
.mainnav__link{
  display:flex;align-items:center;height:100%;padding:0 16px;
  font-family:var(--font-display);font-weight:600;font-size:15px;color:var(--ink-700);
  transition:color .18s var(--ease),background .18s var(--ease);
  gap:6px;white-space:nowrap;
}
.mainnav__link:hover,.mainnav__list>li:hover .mainnav__link{color:var(--blue-600)}
.mainnav__list>li:hover>.mega,.mainnav__list>li:hover>.dropdown,
.mainnav__list>li.is-open>.mega,.mainnav__list>li.is-open>.dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.caret{width:9px;height:9px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);opacity:.6}
.mega{
  position:absolute;left:0;top:100%;width:min(1140px,calc(100vw - 48px));
  background:#fff;border:1px solid var(--line-200);border-top:2px solid var(--blue-600);
  border-radius:0 0 var(--radius-m) var(--radius-m);box-shadow:var(--shadow-3);
  padding:36px 40px 0;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;z-index:60;
}
.mega--center{left:50%;transform:translate(-50%,8px)}
.mega__grid{display:grid;grid-template-columns:repeat(5,1fr);gap:32px}
.mega__col h4{
  display:flex;align-items:center;gap:9px;
  font-size:13.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--navy-800);
  margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line-200);
}
.mega__col h4 svg{width:20px;height:20px;stroke:var(--blue-600);fill:none;stroke-width:1.6;flex:none}
.mega__col ul{list-style:none;margin:0;padding:0}
.mega__col li{margin:0 0 2px}
.mega__col a{display:block;padding:7px 0;font-size:15px;color:var(--ink-700)}
.mega__col a:hover{color:var(--blue-600);transform:translateX(2px)}
.mega__foot{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  margin-top:28px;padding-top:18px;border-top:1px solid var(--line-200);
  background:var(--bg-50);margin-left:-40px;margin-right:-40px;margin-bottom:-36px;
  padding:20px 40px;border-radius:0 0 var(--radius-m) var(--radius-m);
}
.mega__foot p{margin:0;font-size:15px;color:var(--ink-500)}
.dropdown{
  position:absolute;left:0;top:100%;min-width:230px;background:#fff;
  border:1px solid var(--line-200);border-top:2px solid var(--blue-600);
  border-radius:0 0 var(--radius-s) var(--radius-s);box-shadow:var(--shadow-3);
  padding:10px 0;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s var(--ease),transform .18s var(--ease),visibility .18s;z-index:60;
}
.dropdown a{display:block;padding:9px 20px;font-size:14px;color:var(--ink-700)}
.dropdown a:hover{background:var(--blue-50);color:var(--blue-600)}
.mainnav__cta{margin-left:auto;display:flex;gap:10px;align-items:center}

/* ---------- breadcrumbs ---------- */
.breadcrumb{background:var(--bg-50);border-bottom:1px solid var(--line-200)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:12px 0;font-size:13.5px}
.breadcrumb li{display:flex;align-items:center;gap:8px;color:var(--ink-500);margin:0}
.breadcrumb li+li::before{content:"";width:5px;height:5px;border-right:1px solid var(--line-300);border-bottom:1px solid var(--line-300);transform:rotate(-45deg)}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--blue-600)}
.breadcrumb [aria-current]{color:var(--ink-900);font-weight:500}

/* ---------- page head ---------- */
.page-head{padding:56px 0 40px}
.page-head h1{margin-bottom:12px}
.page-head p{font-size:18px;color:var(--ink-500);max-width:760px;margin:0}
.page-head--navy{background:var(--navy-800);color:#fff;padding:72px 0}
.page-head--navy h1{color:#fff}
.page-head--navy p{color:#A9BDD1}

/* ---------- hero ---------- */
.hero{position:relative;background:var(--navy-900);color:#fff;overflow:hidden}
.hero__slide{position:relative;display:none;min-height:600px;align-items:center}
.hero__slide.is-active{display:flex}
.hero__bg{position:absolute;inset:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;opacity:.55}
.hero__bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,23,46,.94) 0%,rgba(6,23,46,.72) 45%,rgba(6,23,46,.25) 100%)}
.hero__content{position:relative;padding:96px 0;max-width:680px}
.hero__tag{
  display:inline-flex;align-items:center;gap:8px;background:rgba(77,163,255,.16);
  border:1px solid rgba(77,163,255,.4);color:#9EC9FF;font-size:13px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;padding:6px 12px;border-radius:4px;margin-bottom:20px;
}
.hero h1{color:#fff;margin-bottom:18px}
.hero p{font-size:18px;color:#C9D6E4;max-width:520px}
.hero__list{list-style:none;margin:22px 0 30px;padding:0}
.hero__list li{display:flex;gap:10px;align-items:flex-start;color:#DCE6F0;margin:0 0 10px;font-size:15.5px}
.hero__list li::before{content:"";flex:none;width:6px;height:6px;margin-top:8px;border-radius:50%;background:var(--blue-500)}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}
.hero__dots{position:absolute;bottom:26px;left:0;right:0;display:flex;justify-content:center;gap:10px;z-index:5}
.hero__dot{width:28px;height:3px;background:rgba(255,255,255,.3);border:0;padding:0;cursor:pointer;transition:background .18s var(--ease)}
.hero__dot.is-active{background:#fff}
.hero__arrow{
  position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);color:#fff;cursor:pointer;z-index:5;
  display:flex;align-items:center;justify-content:center;transition:background .18s var(--ease);
}
.hero__arrow:hover{background:rgba(255,255,255,.22)}
.hero__arrow--prev{left:24px}
.hero__arrow--next{right:24px}

/* ---------- category tiles ---------- */
.cat-strip{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.cat-tile{
  background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);
  padding:28px 20px;text-align:center;color:var(--ink-700);
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.cat-tile:hover{border-color:var(--blue-600);box-shadow:var(--shadow-2);transform:translateY(-2px);color:var(--blue-600)}
.cat-tile svg{width:40px;height:40px;margin:0 auto 14px;stroke:var(--blue-600);fill:none;stroke-width:1.5}
.cat-tile span{display:block;font-family:var(--font-display);font-weight:600;font-size:15.5px;line-height:1.3}
.cat-tile em{display:block;font-style:normal;font-size:12.5px;color:var(--ink-400);margin-top:5px}

/* ---------- product cards ---------- */
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pcard{
  position:relative;background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);
  overflow:hidden;display:flex;flex-direction:column;
  transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.pcard:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:var(--line-300)}
.pcard__media{position:relative;aspect-ratio:1/1;background:#fff;border-bottom:1px solid var(--line-100);overflow:hidden}
.pcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.pcard:hover .pcard__media img{transform:scale(1.04)}
.badges{position:absolute;top:10px;left:10px;display:flex;flex-direction:column;gap:6px;z-index:2}
.badge{
  font-family:var(--font-display);font-weight:600;font-size:11px;letter-spacing:.08em;
  text-transform:uppercase;padding:4px 8px;border-radius:3px;color:#fff;background:var(--navy-800);
}
.badge--hot{background:var(--red-600)}
.badge--sale{background:var(--blue-600)}
.badge--new{background:var(--green-600)}
.pcard__body{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.pcard__sku{font-family:var(--font-mono);font-size:11.5px;color:var(--ink-400);letter-spacing:.04em}
.pcard__title{font-family:var(--font-body);font-weight:600;font-size:15.5px;line-height:1.35;color:var(--navy-800);margin:0;text-wrap:pretty}
.pcard__title a{color:inherit}
.pcard__title a:hover{color:var(--blue-600)}
.pcard__spec{font-size:13.5px;color:var(--ink-500);line-height:1.5}
.pcard__meta{display:flex;align-items:center;gap:12px;font-size:12.5px;color:var(--ink-400);margin-top:auto}
.stars{color:#F5A623;letter-spacing:1px;font-size:12px}
.stars span{color:var(--ink-400);margin-left:4px}
.pcard__price{display:flex;align-items:baseline;gap:8px;margin-top:4px}
.price-now{font-family:var(--font-display);font-weight:700;font-size:21px;color:var(--red-600)}
.price-was{font-size:13.5px;color:var(--ink-400);text-decoration:line-through}
.price-unit{font-size:12px;color:var(--ink-400)}
.pcard__actions{display:flex;gap:8px;margin-top:12px}
.pcard__actions .btn{flex:1;height:38px;font-size:14px;padding:0 10px}

/* ---------- tabs ---------- */
.tabs{border-bottom:1px solid var(--line-200);display:flex;gap:4px;flex-wrap:wrap}
.tab{
  background:transparent;border:0;border-bottom:2px solid transparent;cursor:pointer;
  font-family:var(--font-display);font-weight:600;font-size:15px;color:var(--ink-500);
  padding:14px 18px;margin-bottom:-1px;transition:color .18s var(--ease),border-color .18s var(--ease);
}
.tab:hover{color:var(--navy-800)}
.tab.is-active{color:var(--blue-600);border-bottom-color:var(--blue-600)}
.tabpanel{display:none;padding-top:32px}
.tabpanel.is-active{display:block;animation:fadeUp .3s var(--ease)}

/* ---------- spec table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line-200);border-radius:var(--radius-m)}
table.spec{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
table.spec th,table.spec td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line-100);vertical-align:top}
table.spec tbody tr:last-child th,table.spec tbody tr:last-child td{border-bottom:0}
table.spec thead th{background:var(--bg-50);font-family:var(--font-display);font-weight:600;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-500)}
table.spec th[scope=row]{width:230px;color:var(--ink-500);background:#FCFDFE;font-weight:500}
table.spec td{color:var(--ink-900)}

/* ---------- accordion ---------- */
.acc{border:1px solid var(--line-200);border-radius:var(--radius-m);overflow:hidden}
.acc__item+.acc__item{border-top:1px solid var(--line-200)}
.acc__q{
  width:100%;background:#fff;border:0;cursor:pointer;text-align:left;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding:18px 22px;font:inherit;font-weight:600;font-size:15.5px;color:var(--navy-800);
  transition:background .18s var(--ease);
}
.acc__q:hover{background:var(--bg-50)}
.acc__q .sign{flex:none;width:18px;height:18px;position:relative}
.acc__q .sign::before,.acc__q .sign::after{content:"";position:absolute;background:var(--blue-600);transition:transform .2s var(--ease)}
.acc__q .sign::before{top:8px;left:0;width:18px;height:2px}
.acc__q .sign::after{left:8px;top:0;width:2px;height:18px}
.acc__item.is-open .acc__q .sign::after{transform:scaleY(0)}
.acc__a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.acc__a>div{padding:0 22px 20px;color:var(--ink-700);font-size:15px}
.acc__a p:last-child{margin-bottom:0}

/* ---------- cards: advantage / case / article / video ---------- */
.adv{background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);padding:30px 26px;transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.adv:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.adv__icon{width:48px;height:48px;border-radius:10px;background:var(--blue-50);border:1px solid var(--blue-100);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.adv__icon svg{width:24px;height:24px;stroke:var(--blue-600);fill:none;stroke-width:1.6}
.adv h3{font-size:18px;margin-bottom:8px}
.adv p{font-size:14.5px;color:var(--ink-500);margin:0}
.section--navy .adv{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}
.section--navy .adv h3{color:#fff}
.section--navy .adv p{color:#A9BDD1}
.section--navy .adv__icon{background:rgba(77,163,255,.12);border-color:rgba(77,163,255,.3)}

.case{background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.case:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.case__media{aspect-ratio:16/9;background:var(--bg-100);overflow:hidden}
.case__media img{width:100%;height:100%;object-fit:cover}
.case__body{padding:22px;flex:1;display:flex;flex-direction:column;gap:10px}
.case__tag{font-family:var(--font-display);font-weight:600;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--blue-600)}
.case h3{font-size:17.5px;margin:0;line-height:1.35}
.case p{font-size:14px;color:var(--ink-500);margin:0}
.case .link-arrow{margin-top:auto;font-size:14px}

.article{background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
.article:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.article__media{aspect-ratio:16/9;background:var(--bg-100);overflow:hidden}
.article__media img{width:100%;height:100%;object-fit:cover}
.article__body{padding:20px;flex:1;display:flex;flex-direction:column;gap:8px}
.article__meta{font-size:12.5px;color:var(--ink-400);display:flex;gap:10px;align-items:center}
.article h3{font-size:17px;margin:0;line-height:1.35}
.article p{font-size:14px;color:var(--ink-500);margin:0}
.article .link-arrow{margin-top:auto;font-size:14px}

.video-card{position:relative;background:var(--navy-800);border-radius:var(--radius-m);overflow:hidden;aspect-ratio:16/9;display:block}
.video-card img{width:100%;height:100%;object-fit:cover;opacity:.72;transition:transform .35s var(--ease),opacity .3s var(--ease)}
.video-card:hover img{transform:scale(1.04);opacity:.85}
.video-card__play{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:#fff;
}
.video-card__play span{
  width:58px;height:58px;border-radius:50%;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.45);
  display:flex;align-items:center;justify-content:center;backdrop-filter:blur(4px);
}
.video-card__play span::after{content:"";margin-left:4px;border-left:14px solid #fff;border-top:9px solid transparent;border-bottom:9px solid transparent}
.video-card__play em{font-style:normal;font-family:var(--font-display);font-weight:600;font-size:15px;text-shadow:0 2px 8px rgba(0,0,0,.5)}
.video-card__dur{
  position:absolute;bottom:12px;right:12px;background:rgba(6,23,46,.8);color:#fff;
  font-family:var(--font-mono);font-size:12px;padding:3px 7px;border-radius:3px;
}

/* ---------- quote band ---------- */
.quote-band{background:var(--navy-800);border-radius:var(--radius-l);padding:56px;color:#fff;display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;position:relative;overflow:hidden}
.quote-band::before{content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(77,163,255,.28),transparent 70%)}
.quote-band h2{color:#fff;font-size:30px;margin-bottom:12px}
.quote-band p{color:#A9BDD1;margin:0}
.quote-band__form{display:grid;grid-template-columns:1fr 1fr;gap:12px;position:relative}
.quote-band__form .full{grid-column:1/-1}
.quote-band__note{font-size:12.5px;color:#8FA3B8;margin:12px 0 0}

/* ---------- forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-grid .full{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13.5px;font-weight:600;color:var(--ink-700)}
.field label .req{color:var(--red-600)}
.field input,.field select,.field textarea{
  font:inherit;font-size:15px;color:var(--ink-900);background:#fff;
  border:1px solid var(--line-300);border-radius:6px;padding:11px 14px;width:100%;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{resize:vertical;min-height:110px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:0;border-color:var(--blue-600);box-shadow:0 0 0 3px rgba(27,111,224,.12);
}
.field input[aria-invalid=true],.field select[aria-invalid=true]{border-color:var(--red-600)}
.field .hint{font-size:12.5px;color:var(--ink-400)}
.field--check{flex-direction:row;align-items:flex-start;gap:10px}
.field--check input{width:17px;height:17px;margin-top:3px;accent-color:var(--blue-600)}
.field--check label{font-weight:400;font-size:14px;color:var(--ink-500)}
.alert{border-radius:var(--radius-m);padding:14px 18px;font-size:14.5px;border:1px solid;margin-bottom:20px}
.alert--info{background:var(--blue-50);border-color:var(--blue-100);color:var(--navy-700)}
.alert--success{background:#EDF7F1;border-color:#CBE7D6;color:var(--green-600)}
.alert--warn{background:var(--red-100);border-color:#F3CFCF;color:var(--red-600)}

/* ---------- filter sidebar ---------- */
.plp{display:grid;grid-template-columns:268px 1fr;gap:36px;align-items:start}
.filters{background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);padding:6px 0;position:sticky;top:calc(var(--head-h) + var(--nav-h) + 16px)}
.fgroup{padding:18px 22px;border-bottom:1px solid var(--line-100)}
.fgroup:last-child{border-bottom:0}
.fgroup__h{
  width:100%;background:0;border:0;padding:0;cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  font-family:var(--font-display);font-weight:600;font-size:14px;color:var(--navy-800);letter-spacing:.02em;
}
.fgroup__h .sign{width:10px;height:10px;border-right:1.6px solid var(--ink-400);border-bottom:1.6px solid var(--ink-400);transform:rotate(45deg) translateY(-2px);transition:transform .2s var(--ease)}
.fgroup.is-closed .fgroup__h .sign{transform:rotate(-135deg) translateY(-2px)}
.fgroup__body{padding-top:14px}
.fgroup.is-closed .fgroup__body{display:none}
.check{display:flex;align-items:center;gap:10px;padding:5px 0;font-size:14.5px;color:var(--ink-700);cursor:pointer}
.check input{width:16px;height:16px;accent-color:var(--blue-600);flex:none}
.check .cnt{margin-left:auto;font-size:12px;color:var(--ink-400);font-family:var(--font-mono)}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.toolbar__result{font-size:14.5px;color:var(--ink-500)}
.toolbar__result strong{color:var(--navy-800);font-family:var(--font-mono)}
.toolbar__sort{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--ink-500)}
.toolbar__sort select{font:inherit;font-size:14px;padding:8px 12px;border:1px solid var(--line-300);border-radius:6px;background:#fff;color:var(--ink-900)}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.chip{
  display:inline-flex;align-items:center;gap:7px;background:var(--blue-50);border:1px solid var(--blue-100);
  color:var(--navy-700);font-size:13px;padding:5px 10px;border-radius:20px;
}
.chip button{background:0;border:0;cursor:pointer;color:var(--ink-400);font-size:15px;line-height:1;padding:0}
.chip button:hover{color:var(--red-600)}
.chip--reset{background:#fff;border-color:var(--line-300);color:var(--ink-500);cursor:pointer}
.chip--reset:hover{border-color:var(--ink-400);color:var(--ink-700)}

/* ---------- pagination ---------- */
.pagination{display:flex;justify-content:center;gap:6px;margin-top:44px}
.pagination a,.pagination span{
  min-width:40px;height:40px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-300);border-radius:6px;padding:0 12px;
  font-family:var(--font-mono);font-size:14px;color:var(--ink-700);background:#fff;
}
.pagination a:hover{border-color:var(--blue-600);color:var(--blue-600)}
.pagination .is-current{background:var(--navy-800);border-color:var(--navy-800);color:#fff}
.pagination .is-dots{border:0;background:0;color:var(--ink-400)}

/* ---------- PDP ---------- */
.pdp{display:grid;grid-template-columns:1.05fr 1fr;gap:52px;align-items:start}
.pdp__gallery{position:sticky;top:calc(var(--head-h) + var(--nav-h) + 16px)}
.pdp__main{background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);overflow:hidden;aspect-ratio:1/1}
.pdp__main img{width:100%;height:100%;object-fit:cover}
.pdp__thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:12px}
.pdp__thumb{aspect-ratio:1/1;border:1px solid var(--line-200);border-radius:6px;overflow:hidden;cursor:pointer;background:#fff;transition:border-color .18s var(--ease)}
.pdp__thumb img{width:100%;height:100%;object-fit:cover}
.pdp__thumb.is-active,.pdp__thumb:hover{border-color:var(--blue-600)}
.pdp__title{font-size:30px;margin-bottom:12px}
.pdp__meta{display:flex;align-items:center;gap:16px;font-size:13.5px;color:var(--ink-500);flex-wrap:wrap;margin-bottom:16px}
.pdp__meta .mono{color:var(--ink-400)}
.pdp__pricebox{
  background:var(--bg-50);border:1px solid var(--line-200);border-radius:var(--radius-m);
  padding:20px 22px;margin-bottom:20px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
}
.pdp__pricebox .price-now{font-size:32px}
.pdp__pricebox .price-was{font-size:16px}
.price-save{
  background:var(--red-100);color:var(--red-600);font-size:12.5px;font-weight:600;
  padding:4px 9px;border-radius:3px;
}
.pdp__stock{display:flex;align-items:center;gap:7px;font-size:13.5px;color:var(--green-600);font-weight:500}
.pdp__stock::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green-600)}
.opt{margin-bottom:18px}
.opt__label{font-size:13.5px;font-weight:600;color:var(--ink-700);margin-bottom:9px;display:flex;justify-content:space-between}
.opt__label span{color:var(--ink-400);font-weight:400;font-family:var(--font-mono)}
.swatches{display:flex;gap:8px;flex-wrap:wrap}
.swatch{
  font-family:var(--font-mono);font-size:13px;padding:8px 13px;border:1px solid var(--line-300);
  border-radius:5px;background:#fff;cursor:pointer;color:var(--ink-700);
  transition:border-color .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
}
.swatch:hover{border-color:var(--navy-800)}
.swatch.is-active{border-color:var(--blue-600);background:var(--blue-50);color:var(--blue-700);font-weight:500}
.qty{display:flex;align-items:center;border:1px solid var(--line-300);border-radius:6px;overflow:hidden;width:140px}
.qty button{width:40px;height:44px;border:0;background:var(--bg-50);cursor:pointer;font-size:18px;color:var(--ink-700);transition:background .18s var(--ease)}
.qty button:hover{background:var(--line-100)}
.qty input{width:60px;border:0;border-left:1px solid var(--line-200);border-right:1px solid var(--line-200);text-align:center;font:inherit;font-size:15px;height:44px}
.qty input:focus{outline:0}
.buy-row{display:flex;gap:12px;margin:22px 0 14px;flex-wrap:wrap}
.buy-row .btn{flex:1;min-width:170px}
.pdp__assure{list-style:none;margin:0;padding:14px 0 0;border-top:1px solid var(--line-200);display:grid;grid-template-columns:1fr 1fr;gap:10px 20px}
.pdp__assure li{display:flex;gap:9px;align-items:flex-start;font-size:13.5px;color:var(--ink-500);margin:0}
.pdp__assure li::before{content:"";flex:none;width:15px;height:15px;margin-top:3px;border-radius:50%;background:var(--green-600);
  -webkit-mask: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>') center/contain no-repeat;
  mask: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>') center/contain no-repeat;}

.addon{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);padding:14px}
.addon+.addon{margin-top:12px}
.addon img{width:76px;height:76px;object-fit:cover;border-radius:6px;flex:none;border:1px solid var(--line-100)}
.addon__b{flex:1;min-width:0}
.addon__b h4{font-size:14.5px;margin:0 0 3px}
.addon__b p{font-size:12.5px;color:var(--ink-400);margin:0;font-family:var(--font-mono)}
.addon__p{font-family:var(--font-display);font-weight:700;color:var(--navy-800);font-size:17px;white-space:nowrap}
.addon input{width:17px;height:17px;accent-color:var(--blue-600)}

.reviews{display:grid;grid-template-columns:280px 1fr;gap:44px;align-items:start}
.review{border-bottom:1px solid var(--line-100);padding:18px 0}
.review:first-child{padding-top:0}
.review__h{display:flex;align-items:center;gap:12px;margin-bottom:8px;flex-wrap:wrap}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--navy-800);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:600;font-size:14px}
.review__h strong{font-size:14.5px}
.review__h .stars{font-size:13px}
.review__h time{margin-left:auto;font-size:12.5px;color:var(--ink-400)}
.review p{font-size:14.5px;color:var(--ink-700);margin:0}
.verified{font-size:11.5px;font-weight:600;color:var(--green-600);background:#EDF7F1;padding:2px 7px;border-radius:3px}

/* ---------- floating cart bar (加购浮窗) ---------- */
.cartbar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;background:#fff;border-top:1px solid var(--line-200);
  box-shadow:0 -8px 24px rgba(11,37,69,.10);padding:12px 0;
  transform:translateY(110%);transition:transform .3s var(--ease);
}
.cartbar.is-visible{transform:translateY(0)}
.cartbar__in{display:flex;align-items:center;gap:18px}
.cartbar img{width:54px;height:54px;object-fit:cover;border-radius:6px;border:1px solid var(--line-100);flex:none}
.cartbar__t{flex:1;min-width:0}
.cartbar__t strong{display:block;font-size:14.5px;color:var(--navy-800);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cartbar__t span{font-size:13px;color:var(--ink-500)}
.cartbar__p{font-family:var(--font-display);font-weight:700;font-size:20px;color:var(--red-600);white-space:nowrap}

/* ---------- floating side widgets ---------- */
.side-tab{
  position:fixed;right:0;top:44%;z-index:75;transform-origin:right center;
  writing-mode:vertical-rl;background:var(--navy-800);color:#fff;border:0;cursor:pointer;
  font-family:var(--font-display);font-weight:600;font-size:13.5px;letter-spacing:.12em;text-transform:uppercase;
  padding:18px 12px;border-radius:8px 0 0 8px;box-shadow:var(--shadow-2);
  transition:background .18s var(--ease),padding .18s var(--ease);
}
.side-tab:hover{background:var(--blue-600);padding-right:18px}
.totop{
  position:fixed;right:22px;bottom:26px;z-index:70;width:44px;height:44px;border-radius:50%;
  background:#fff;border:1px solid var(--line-300);color:var(--navy-800);cursor:pointer;
  box-shadow:var(--shadow-2);display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease);
  transform:translateY(8px);
}
.totop.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}
.totop:hover{border-color:var(--navy-800)}
.totop svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2}

/* ---------- steps ---------- */
.steps{counter-reset:s;display:grid;gap:0}
.step{display:grid;grid-template-columns:52px 1fr;gap:20px;padding-bottom:32px;position:relative}
.step:last-child{padding-bottom:0}
.step::before{
  counter-increment:s;content:counter(s,decimal-leading-zero);
  width:52px;height:52px;border-radius:50%;background:var(--blue-50);border:1px solid var(--blue-100);
  color:var(--blue-600);font-family:var(--font-display);font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;flex:none;z-index:1;
}
.step::after{content:"";position:absolute;left:26px;top:52px;bottom:0;width:1px;background:var(--line-200)}
.step:last-child::after{display:none}
.step h3{font-size:18px;margin:12px 0 8px}
.step p{font-size:15px;color:var(--ink-500);margin:0}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
.stat b{display:block;font-family:var(--font-display);font-weight:700;font-size:56px;color:#fff;line-height:1;letter-spacing:-.02em}
.stat span{display:block;margin-top:12px;font-size:15px;color:#A9BDD1}

/* ---------- service blocks ---------- */
.service-nav{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-bottom:56px}
.service-nav a{
  background:#fff;border:1px solid var(--line-200);border-radius:var(--radius-m);padding:18px 14px;text-align:center;
  font-family:var(--font-display);font-weight:600;font-size:14px;color:var(--ink-700);
  transition:border-color .18s var(--ease),color .18s var(--ease),box-shadow .18s var(--ease);
}
.service-nav a:hover{border-color:var(--blue-600);color:var(--blue-600);box-shadow:var(--shadow-2)}
.service-block{display:grid;grid-template-columns:64px 1fr;gap:24px;padding:36px 0;border-top:1px solid var(--line-200);scroll-margin-top:130px}
.service-block:first-of-type{border-top:0;padding-top:0}
.service-block__icon{width:56px;height:56px;border-radius:12px;background:var(--blue-50);border:1px solid var(--blue-100);display:flex;align-items:center;justify-content:center}
.service-block__icon svg{width:26px;height:26px;stroke:var(--blue-600);fill:none;stroke-width:1.6}
.service-block h2{font-size:24px;margin-bottom:10px}
.service-block p{color:var(--ink-500)}
.service-block ul{margin:0;padding-left:18px;font-size:15px}

/* ---------- cart / checkout ---------- */
.cart-table{width:100%;border-collapse:collapse}
.cart-table th{
  text-align:left;font-family:var(--font-display);font-weight:600;font-size:12.5px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink-400);padding:0 16px 14px;border-bottom:1px solid var(--line-200);
}
.cart-table td{padding:18px 16px;border-bottom:1px solid var(--line-100);vertical-align:middle;font-size:14.5px}
.cart-item{display:flex;gap:14px;align-items:center;min-width:260px}
.cart-item img{width:66px;height:66px;object-fit:cover;border-radius:6px;border:1px solid var(--line-100);flex:none}
.cart-item strong{display:block;font-size:14.5px;color:var(--navy-800);font-weight:600;margin-bottom:3px}
.cart-item span{font-size:12.5px;color:var(--ink-400);font-family:var(--font-mono)}
.cart-remove{background:0;border:0;color:var(--ink-400);cursor:pointer;font-size:13px;padding:4px 0}
.cart-remove:hover{color:var(--red-600)}
.summary{
  background:var(--bg-50);border:1px solid var(--line-200);border-radius:var(--radius-m);padding:26px;
  position:sticky;top:calc(var(--head-h) + var(--nav-h) + 16px);
}
.summary h3{font-size:18px;margin-bottom:18px}
.sumrow{display:flex;justify-content:space-between;align-items:center;font-size:14.5px;padding:9px 0;color:var(--ink-500)}
.sumrow b{color:var(--ink-900);font-weight:500}
.sumrow--total{border-top:1px solid var(--line-200);margin-top:10px;padding-top:18px;font-size:16px;color:var(--ink-900);font-weight:600}
.sumrow--total .amount{font-family:var(--font-display);font-weight:700;font-size:26px;color:var(--red-600)}
.cart-layout{display:grid;grid-template-columns:1fr 380px;gap:40px;align-items:start}
.pay-icons{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.pay-icons span{
  border:1px solid var(--line-300);border-radius:4px;padding:6px 11px;font-family:var(--font-display);
  font-weight:600;font-size:12.5px;color:var(--ink-500);letter-spacing:.04em;
}

/* ---------- auth ---------- */
.auth{min-height:calc(100vh - var(--head-h) - var(--nav-h));display:grid;grid-template-columns:1fr 1fr}
.auth__aside{background:var(--navy-800);color:#fff;padding:72px 60px;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden}
.auth__aside::before{content:"";position:absolute;right:-140px;bottom:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(77,163,255,.25),transparent 70%)}
.auth__aside h2{color:#fff;font-size:30px;position:relative}
.auth__aside p{color:#A9BDD1;position:relative;max-width:400px}
.auth__list{list-style:none;margin:26px 0 0;padding:0;position:relative}
.auth__list li{display:flex;gap:11px;align-items:flex-start;color:#C9D6E4;margin:0 0 14px;font-size:15px}
.auth__list li::before{content:"";flex:none;width:6px;height:6px;margin-top:8px;border-radius:50%;background:var(--blue-500)}
.auth__panel{display:flex;align-items:center;justify-content:center;padding:64px 40px;background:#fff}
.auth__card{width:100%;max-width:420px}
.auth__card h1{font-size:28px;margin-bottom:8px}
.auth__card>p{color:var(--ink-500);font-size:15px;margin-bottom:28px}
.auth__foot{margin-top:22px;font-size:14.5px;color:var(--ink-500);text-align:center}
.divider{display:flex;align-items:center;gap:14px;color:var(--ink-400);font-size:13px;margin:24px 0}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line-200)}

/* ---------- about / content ---------- */
.prose{max-width:800px}
.prose h2{margin-top:44px}
.prose h2:first-child{margin-top:0}
.timeline{display:grid;gap:0;margin-top:8px}
.tl{display:grid;grid-template-columns:120px 1fr;gap:26px;padding:0 0 30px;position:relative}
.tl__year{font-family:var(--font-display);font-weight:700;font-size:20px;color:var(--blue-600)}
.tl__year::after{content:"";position:absolute;left:120px;top:9px;bottom:0;width:1px;background:var(--line-200)}
.tl:last-child .tl__year::after{display:none}
.tl h3{font-size:17px;margin:2px 0 6px}
.tl p{font-size:14.5px;color:var(--ink-500);margin:0}

.value-card{background:var(--bg-50);border:1px solid var(--line-200);border-radius:var(--radius-m);padding:26px}
.value-card h3{font-size:17px;margin-bottom:8px}
.value-card p{font-size:14.5px;color:var(--ink-500);margin:0}

/* ---------- docs / article ---------- */
.doc-layout{display:grid;grid-template-columns:250px 1fr;gap:56px;align-items:start}
.toc{position:sticky;top:calc(var(--head-h) + var(--nav-h) + 16px);border-left:2px solid var(--line-200);padding-left:22px}
.toc h4{font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-400);margin-bottom:14px}
.toc ul{list-style:none;margin:0;padding:0}
.toc a{display:block;padding:6px 0;font-size:14.5px;color:var(--ink-500);border-left:2px solid transparent;margin-left:-24px;padding-left:22px}
.toc a:hover{color:var(--blue-600)}
.doc-meta{display:flex;gap:18px;align-items:center;font-size:13.5px;color:var(--ink-400);margin-bottom:24px;flex-wrap:wrap}
.doc-hero{border-radius:var(--radius-l);overflow:hidden;margin-bottom:36px;border:1px solid var(--line-200)}
.doc-hero img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- solution cards ---------- */
.sol{position:relative;border-radius:var(--radius-m);overflow:hidden;background:var(--navy-800);min-height:320px;display:flex;flex-direction:column;justify-content:flex-end;padding:28px;color:#fff}
.sol img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5;transition:transform .4s var(--ease),opacity .3s var(--ease)}
.sol:hover img{transform:scale(1.05);opacity:.62}
.sol__b{position:relative}
.sol__tag{font-family:var(--font-display);font-weight:600;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:#9EC9FF;margin-bottom:10px;display:block}
.sol h3{color:#fff;font-size:21px;margin-bottom:8px}
.sol p{color:#C9D6E4;font-size:14.5px;margin:0 0 14px}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-900);color:#8FA3B8;font-size:15px;margin-top:0}
.footer-top{display:grid;grid-template-columns:1.3fr repeat(4,1fr);gap:44px;padding:72px 0 52px}
.footer-brand img{height:40px;width:auto;margin-bottom:18px}
.footer-brand p{color:#7E93A8;font-size:14.5px;max-width:300px;margin-bottom:20px}
.footer-social{display:flex;gap:10px}
.footer-social a{width:36px;height:36px;border-radius:6px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center;color:#C9D6E4}
.footer-social a:hover{background:var(--blue-600);color:#fff;border-color:var(--blue-600)}
.footer-social svg{width:17px;height:17px;fill:currentColor}
.footer-col h4{font-family:var(--font-display);font-weight:600;font-size:13.5px;letter-spacing:.1em;text-transform:uppercase;color:#fff;margin-bottom:18px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin:0 0 10px}
.footer-col a{color:#8FA3B8;font-size:14.5px}
.footer-col a:hover{color:#fff}
.footer-news{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-m);padding:26px 28px;margin-bottom:40px;display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}
.footer-news>div{max-width:520px}
.footer-news h4{color:#fff;margin-bottom:8px;font-size:17px}
.footer-news p{font-size:13.5px;color:#7E93A8;margin:0}
.footer-news form{display:flex;gap:8px;flex:1;min-width:300px;max-width:440px}
.footer-news input{flex:1;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:6px;padding:10px 13px;color:#fff;font:inherit;font-size:14px;min-width:0}
.footer-news input::placeholder{color:#6B8095}
.footer-news input:focus{outline:0;border-color:var(--blue-500)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-size:13.5px}
.footer-bottom ul{display:flex;gap:20px;list-style:none;margin:0;padding:0}
.footer-bottom a{color:#8FA3B8}
.footer-bottom a:hover{color:#fff}

/* ---------- helpers ---------- */
.mt-0{margin-top:0}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mt-48{margin-top:48px}.mt-64{margin-top:64px}
.mb-0{margin-bottom:0}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mb-32{margin-bottom:32px}
.text-center{text-align:center}
.text-muted{color:var(--ink-500)}
.flex{display:flex;gap:16px;align-items:center}
.flex-between{display:flex;justify-content:space-between;align-items:center;gap:16px}
.aspect-16-9{aspect-ratio:16/9;overflow:hidden;border-radius:var(--radius-m)}
.aspect-16-9 img{width:100%;height:100%;object-fit:cover}
.pill{
  display:inline-flex;align-items:center;gap:8px;background:var(--blue-50);border:1px solid var(--blue-100);
  color:var(--navy-700);font-size:13.5px;font-weight:500;padding:7px 14px;border-radius:20px;
}
.img-cover{width:100%;height:100%;object-fit:cover}
.rounded{border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line-200)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:8px 20px;font-size:14.5px}
.kv dt{color:var(--ink-400)}
.kv dd{margin:0;color:var(--ink-900)}
.note{font-size:13px;color:var(--ink-400);font-style:italic}

@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.reveal{opacity:0;transform:translateY(18px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .cat-strip{grid-template-columns:repeat(3,1fr)}
  .footer-top{grid-template-columns:1fr 1fr 1fr;gap:36px}
  .footer-brand{grid-column:1/-1}
  .mega__grid{grid-template-columns:repeat(3,1fr)}
  .stats{grid-template-columns:repeat(2,1fr);gap:40px}
}
@media (max-width:980px){
  .section{padding:64px 0}
  .topbar__list li:nth-child(n+2){display:none}
  .search{display:none}
  .header-main{justify-content:space-between}
  .split,.pdp,.cart-layout,.auth,.doc-layout,.reviews{grid-template-columns:1fr}
  .auth__aside{min-height:320px;padding:48px 32px}
  .plp{grid-template-columns:1fr}
  .filters{position:static}
  .g3,.g4,.g5{grid-template-columns:repeat(2,1fr)}
  .quote-band{grid-template-columns:1fr;padding:40px 32px}
  .footer-top{grid-template-columns:1fr 1fr;padding:48px 0 40px}
  .toc{position:static;border-left:0;padding-left:0}
  .toc a{margin-left:0;padding-left:0}
  .doc-layout{gap:32px}
  .service-nav{grid-template-columns:repeat(3,1fr)}
  .mainnav__in{overflow-x:auto;scrollbar-width:none}
  .mainnav__in::-webkit-scrollbar{display:none}
  .mainnav__cta{display:none}
  .cartbar__in{gap:12px}
  .cartbar .qty{display:none}
}
@media (max-width:720px){
  body{font-size:16px}
  .hero__slide{min-height:440px}
  .hero__content{padding:64px 0}
  .product-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .pcard__actions{display:none}
  .g2,.g3,.g4,.g5{grid-template-columns:1fr}
  .cat-strip{grid-template-columns:repeat(2,1fr)}
  .form-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr;gap:32px}
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .quote-band{padding:32px 22px}
  .quote-band__form{grid-template-columns:1fr}
  .buy-row{flex-direction:column}
  .buy-row .btn{width:100%}
  .pdp__assure{grid-template-columns:1fr}
  .side-tab{display:none}
  .cartbar__p{display:none}
  .service-nav{grid-template-columns:repeat(2,1fr)}
  .topbar__in{height:auto;padding:6px 0;flex-direction:column;align-items:flex-start;gap:2px}
  .topbar__tools{display:none}
  .service-block{grid-template-columns:1fr;gap:14px}
  .tl{grid-template-columns:1fr;gap:8px}
  .tl__year::after{display:none}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}
@media print{
  .topbar,.site-header,.site-footer,.cartbar,.side-tab,.totop,.hero__dots,.hero__arrow{display:none !important}
}