/* Star Marine — B2B marine equipment design system */
@font-face{font-family:"Inter";src:url("../fonts/inter-400.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-500.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-600.woff2") format("woff2");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("../fonts/inter-700.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}

:root{
  --brand:#0B1F3A;
  --brand-2:#12325A;
  --brand-3:#1A3F6C;
  --brand-ink:#071422;
  --accent:#C5A572;
  --accent-2:#B08D4E;
  --accent-soft:#E8D7B5;
  --sea:#1F6F8B;
  --sea-2:#15586E;
  --wa:#128C7E;
  --wa-2:#0E6E63;
  --paper:#F3F0E8;
  --paper-2:#E8E4D8;
  --white:#FFFFFF;
  --ink:#122033;
  --ink-2:#2A3A4D;
  --muted:#5B6B7C;
  --muted-2:#7A8794;
  --line:#D5DCE3;
  --line-2:#E6EBEF;
  --danger:#8B2E2E;
  --ok:#1B7A4A;
  --shadow-1:0 1px 2px rgba(11,31,58,.06);
  --shadow-2:0 8px 28px rgba(11,31,58,.10);
  --shadow-3:0 16px 48px rgba(11,31,58,.16);
  --radius:10px;
  --radius-sm:6px;
  --radius-lg:16px;
  --header-h:76px;
  --topbar-h:34px;
  --container:1240px;
  --gutter:24px;
  --fs-xs:12px;
  --fs-sm:14px;
  --fs-md:16px;
  --fs-lg:18px;
  --fs-xl:22px;
  --fs-2xl:28px;
  --fs-3xl:36px;
  --fs-4xl:48px;
  --lh:1.65;
  --lh-tight:1.2;
  --tracking:0.04em;
  --ease:cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{margin:0;padding:0}
body{
  font-family:"Inter",Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--white);
  font-size:var(--fs-md);
  line-height:var(--lh);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-2);text-decoration:none}
a:hover{color:var(--sea)}
button{font-family:inherit}
h1,h2,h3,h4{font-weight:700;line-height:var(--lh-tight);color:var(--brand);letter-spacing:-0.02em;margin:0 0 .6em}
h1{font-size:var(--fs-4xl)}
h2{font-size:var(--fs-3xl)}
h3{font-size:var(--fs-xl)}
h4{font-size:var(--fs-lg)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}

.skip{position:absolute;left:-999px;top:0;background:var(--brand);color:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px;top:8px}

.container{width:min(100% - 2*var(--gutter), var(--container));margin-inline:auto}
.topbar{
  background:var(--brand-ink);
  color:#D6DCE3;
  font-size:var(--fs-xs);
  height:var(--topbar-h);
  display:flex;align-items:center;
}
.topbar .container{display:flex;justify-content:space-between;gap:16px;align-items:center}
.topbar a{color:#D6DCE3}
.topbar a:hover{color:var(--accent)}
.topbar-links{display:flex;gap:18px;flex-wrap:wrap}

/* ===== Header + anti-flicker mega menu ===== */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(1.2) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;gap:20px;
  min-height:var(--header-h);
}
.logo{flex:0 0 auto;display:flex;align-items:center;line-height:0}
.logo img{
  height:44px;width:auto;display:block;
  max-width:220px;
}
.nav-desktop{flex:1 1 auto;min-width:0}
.nav-root{
  display:flex;align-items:stretch;list-style:none;
  margin:0;padding:0;gap:0;
}
.nav-item{position:relative;display:flex;align-items:center}
.nav-item > a{
  display:flex;align-items:center;gap:6px;
  padding:26px 13px;
  color:var(--brand);
  font-size:13.5px;font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
}
.nav-item > a:hover{color:var(--sea)}
.nav-item.has-mega > a::after{
  content:"";
  width:0;height:0;
  border-left:4px solid transparent;
  border-right:4px solid transparent;
  border-top:5px solid currentColor;
  opacity:.7;
}

/* Bridge so cursor can travel trigger → panel without 闪退 */
.nav-item.has-mega::after{
  content:"";
  position:absolute;left:0;right:0;top:100%;
  height:20px;
  pointer-events:none;
}
.nav-item.has-mega:hover::after,
.nav-item.has-mega:focus-within::after{pointer-events:auto}

.mega{
  position:absolute;
  top:100%;
  left:0;
  width:min(1080px, calc(100vw - 48px));
  background:var(--white);
  border:1px solid var(--line);
  border-top:3px solid var(--brand);
  box-shadow:var(--shadow-3);
  padding:22px 22px 18px;
  border-radius:0 0 var(--radius) var(--radius);
  /* NEVER display:none — that is the flicker/crash */
  visibility:hidden;
  opacity:0;
  transform:translateY(8px);
  pointer-events:none;
  transition:opacity 140ms var(--ease), transform 140ms var(--ease), visibility 0s linear 160ms;
  z-index:90;
}
.nav-item.has-mega:hover .mega,
.nav-item.has-mega:focus-within .mega{
  visibility:visible;
  opacity:1;
  transform:translateY(0);
  pointer-events:auto;
  transition-delay:0s;
}
.mega-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
}
.mega-col h3{
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--muted);font-weight:700;margin:0 0 10px;
  border-bottom:1px solid var(--line-2);padding-bottom:8px;
}
.mega-col a.mega-link{
  display:flex;align-items:center;gap:10px;
  padding:6px 0;color:var(--ink-2);font-size:13.5px;font-weight:500;
}
.mega-col a.mega-link:hover{color:var(--brand)}
.mega-thumb{
  width:42px;height:42px;flex:0 0 42px;
  object-fit:cover;border-radius:4px;background:var(--paper);
  border:1px solid var(--line-2);
}
.mega-all{
  display:inline-block;margin-top:8px;
  font-size:12px;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;color:var(--sea);
}

.header-cta{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 16px;border-radius:4px;
  font-size:13px;font-weight:700;letter-spacing:.04em;
  text-transform:uppercase;border:1px solid transparent;
  white-space:nowrap;cursor:pointer;
}
.btn-quote{background:var(--brand);color:#fff}
.btn-quote:hover{background:var(--brand-3);color:#fff}
.btn-wa{background:var(--wa);color:#fff}
.btn-wa:hover{background:var(--wa-2);color:#fff}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-line{background:transparent;color:var(--brand);border-color:var(--brand)}
.btn-line:hover{background:var(--brand);color:#fff}

.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:6px;align-items:center;justify-content:center;
  flex-direction:column;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand)}

.nav-mobile{
  display:none;border-top:1px solid var(--line);background:#fff;
  padding:8px 0 18px;
}
.nav-mobile.is-open{display:block}
.nav-mobile a{
  display:block;padding:12px 0;border-bottom:1px solid var(--line-2);
  color:var(--brand);font-weight:600;
}
.nav-mobile details{border-bottom:1px solid var(--line-2)}
.nav-mobile summary{
  padding:12px 0;font-weight:700;color:var(--brand);cursor:pointer;list-style:none;
}
.nav-mobile summary::-webkit-details-marker{display:none}
.nav-mobile details a{padding-left:12px;font-weight:500;font-size:14px}

/* ===== Hero ===== */
.hero{position:relative;min-height:620px;color:#fff;overflow:hidden;background:var(--brand)}
.hero-slides{position:absolute;inset:0}
.hero-slide{
  position:absolute;inset:0;
  opacity:0;transition:opacity 700ms ease;
  background:#0B1F3A center/cover no-repeat;
}
.hero-slide.is-active{opacity:1}
.hero-slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(7,20,34,.72) 0%,rgba(7,20,34,.42) 48%,rgba(7,20,34,.22) 100%);
}
.hero-content{
  position:relative;z-index:2;
  min-height:620px;display:flex;flex-direction:column;justify-content:center;
  padding:72px 0 88px;max-width:760px;
}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--accent);margin-bottom:14px;
}
.hero h1{color:#fff;font-size:clamp(32px,4.4vw,52px);max-width:18ch;margin-bottom:16px}
.hero .lede{font-size:18px;color:#E6EBEF;max-width:46ch;margin-bottom:28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-dots{
  position:absolute;z-index:3;left:var(--gutter);bottom:24px;
  display:flex;gap:8px;
}
.hero-dots button{
  width:34px;height:4px;border:0;padding:0;background:rgba(255,255,255,.35);cursor:pointer;
}
.hero-dots button.is-active{background:var(--accent)}

/* ===== Sections ===== */
.section{padding:72px 0}
.section-alt{background:var(--paper)}
.section-dark{background:var(--brand);color:#E6EBEF}
.section-dark h2,.section-dark h3{color:#fff}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}
.section-head p{margin:0;color:var(--muted);max-width:52ch}
.kicker{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--sea);font-weight:700;margin-bottom:8px}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}

.cat-card,.prod-card,.case-card,.info-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform 180ms var(--ease), box-shadow 180ms var(--ease);
}
.cat-card:hover,.prod-card:hover,.case-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.card-media{aspect-ratio:4/3;background:var(--paper);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{padding:16px 16px 18px}
.card-body h3{font-size:16px;margin:0 0 6px}
.card-body p{font-size:14px;color:var(--muted);margin:0}
.card-meta{font-size:12px;color:var(--muted-2);letter-spacing:.04em;text-transform:uppercase;margin-bottom:6px}

.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  padding:22px 18px;border-radius:var(--radius);
}
.stat b{display:block;font-size:28px;color:var(--accent);letter-spacing:-.02em}
.stat span{font-size:13px;color:#C9D3DC}

.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.split img{width:100%;border-radius:var(--radius);object-fit:cover;aspect-ratio:4/3}

.specs{width:100%;border-collapse:collapse;font-size:14px}
.specs th,.specs td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.specs th{width:34%;color:var(--muted);font-weight:600;background:var(--paper)}

.crumbs{font-size:13px;color:var(--muted);padding:16px 0 8px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--brand)}

.prose{max-width:72ch}
.prose h2{margin-top:1.4em}
.prose li{margin-bottom:.35em}

.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:6px;background:var(--paper)}

.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px}
.contact-card{background:var(--paper);padding:28px;border-radius:var(--radius)}
.contact-card dt{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:14px}
.contact-card dd{margin:4px 0 0;font-weight:600;color:var(--brand)}

.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:700;color:var(--brand)}
.faq details p{margin:10px 0 0;color:var(--ink-2)}

/* Footer */
.site-footer{background:var(--brand-ink);color:#C9D3DC;padding:56px 0 24px;font-size:14px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.site-footer a{color:#C9D3DC}
.site-footer a:hover{color:var(--accent)}
.site-footer h3{color:#fff;font-size:13px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:0 0 8px}
.foot-logo img{height:40px;width:auto}
.legal{border-top:1px solid rgba(255,255,255,.1);padding-top:16px;display:flex;justify-content:space-between;gap:12px;font-size:12px;color:#8A97A6}

/* Floating WhatsApp */
.float-cta{
  position:fixed;right:20px;bottom:20px;z-index:70;
  display:flex;flex-direction:column;gap:8px;
}
.float-cta a{
  width:52px;height:52px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-2);color:#fff;
}
.float-cta .wa{background:var(--wa)}
.float-cta .mail{background:var(--brand)}
.float-cta svg{width:24px;height:24px;fill:currentColor}

.page-hero{
  background:var(--brand) url("../img/hero-fallback.webp") center/cover;
  color:#fff;padding:48px 0 40px;position:relative;
}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,20,34,.82),rgba(7,20,34,.45))}
.page-hero .container{position:relative;z-index:1}
.page-hero h1{color:#fff;margin:0 0 8px}
.page-hero p{color:#D6DCE3;margin:0;max-width:56ch}

.related{margin-top:48px}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}
.badge{
  border:1px solid var(--line);padding:6px 10px;border-radius:999px;
  font-size:12px;font-weight:600;color:var(--brand-2);background:#fff;
}

.cta-band{
  background:linear-gradient(90deg,var(--brand),var(--brand-3));
  color:#fff;padding:40px 0;
}
.cta-band h2{color:#fff;margin:0 0 8px}
.cta-band p{margin:0 0 16px;color:#D6DCE3}

/* Product layout */
.pdp{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
.pdp-gallery img{width:100%;border-radius:var(--radius);background:var(--paper);aspect-ratio:4/3;object-fit:cover}
.thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:8px}
.thumbs img{aspect-ratio:1;object-fit:cover;border-radius:4px;border:1px solid var(--line)}
.pdp-buy{position:sticky;top:96px}
.pdp-buy .lede{color:var(--ink-2)}

/* ===== Responsive ===== */
@media (max-width:1440px){
  .mega{width:min(980px, calc(100vw - 40px))}
}
@media (max-width:1280px){
  .nav-item > a{padding:26px 10px;font-size:13px}
  .grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}
  .mega-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
}
@media (max-width:1100px){
  .header-cta .btn-wa{display:none}
  .split,.contact-grid,.pdp{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .stat-row{grid-template-columns:1fr 1fr}
}
@media (max-width:1024px){
  .nav-desktop,.header-cta .btn-quote{display:none}
  .nav-toggle{display:inline-flex}
  .mega{visibility:hidden !important;opacity:0 !important;pointer-events:none !important;transform:none}
  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero,.hero-content{min-height:520px}
  h1{font-size:34px}
  h2{font-size:28px}
}
@media (max-width:860px){
  .topbar-links span.hide-sm{display:none}
  .gallery{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  :root{--gutter:16px;--header-h:64px}
  .logo img{height:40px}
  .grid-3,.grid-4,.stat-row,.foot-grid,.gallery{grid-template-columns:1fr}
  .hero,.hero-content{min-height:460px;padding:48px 0 72px}
  .hero h1{font-size:30px}
  .section{padding:48px 0}
  .float-cta{right:14px;bottom:72px}
  .legal{flex-direction:column}
  .thumbs{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:480px){
  .hero-actions .btn{width:100%}
  .btn{height:44px}
}
@media (min-width:1024px){
  .nav-toggle{display:none}
  .nav-mobile{display:none !important}
}
@media (prefers-reduced-motion:reduce){
  .mega,.hero-slide,.cat-card,.prod-card{transition:none;transform:none}
  html{scroll-behavior:auto}
}
@media (hover:none){
  .nav-item.has-mega:hover .mega{visibility:hidden;opacity:0;pointer-events:none}
}

/* Extra layout tokens and polish — keep visual system consistent */
:root{
  --space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;
  --space-5:24px;--space-6:32px;--space-7:48px;--space-8:72px;
  --focus:0 0 0 3px rgba(197,165,114,.45);
  --header-blur:12px;
  --z-float:70;--z-header:80;--z-mega:90;--z-skip:100;
}
a:focus-visible,.btn:focus-visible,.nav-toggle:focus-visible,.hero-dots button:focus-visible{
  outline:none;box-shadow:var(--focus);
}
.logo:focus-visible{box-shadow:var(--focus);border-radius:4px}
.site-header .container.header-inner{max-width:var(--container)}
.nav-item > a{border-bottom:2px solid transparent}
.nav-item:hover > a,.nav-item:focus-within > a{border-bottom-color:var(--accent)}
.mega-col a.mega-link span{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  line-height:1.35;
}
.prod-card h3,.cat-card h3,.case-card h3{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:2.4em;
}
.card-media img{transition:transform 320ms var(--ease)}
.prod-card:hover .card-media img,.cat-card:hover .card-media img{transform:scale(1.04)}
.page-hero{
  background-color:var(--brand);
  background-image:linear-gradient(90deg,rgba(7,20,34,.82),rgba(7,20,34,.45)), url("../img/hero-fallback.webp");
  background-size:cover;background-position:center;
}
.page-hero::after{display:none}
.cert-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.cert-row span{
  min-width:64px;text-align:center;padding:8px 12px;
  border:1px solid var(--line);border-radius:4px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  color:var(--brand);
}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
.callout{
  border-left:3px solid var(--accent);background:var(--paper);
  padding:16px 18px;margin:18px 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;
}
.muted{color:var(--muted)}
.small{font-size:var(--fs-sm)}
.center{text-align:center}
.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;
}
.hero-content .btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.pdp-buy .btn{margin-right:8px;margin-bottom:8px}
.thumbs img{cursor:default}
.site-footer .foot-logo{display:inline-block;margin-bottom:8px}
.topbar{letter-spacing:.02em}

@media (min-width:1440px){
  :root{--container:1280px}
  .hero{min-height:660px}
  .hero-content{min-height:660px}
}
@media (min-width:1600px){
  .mega{min-width:1080px}
}
@media print{
  .topbar,.site-header,.float-cta,.hero-dots,.nav-toggle,.header-cta{display:none !important}
  .hero{min-height:auto;color:#000}
  a{color:#000}
  body{background:#fff}
}
@media (max-width:360px){
  .logo img{height:36px;max-width:160px}
  .float-cta a{width:46px;height:46px}
}
/* Type scale helpers */
.lead{font-size:18px;line-height:1.6;color:var(--ink-2)}
.h-display{font-size:clamp(36px,5vw,56px);letter-spacing:-0.03em}
.stack-sm > * + *{margin-top:8px}
.stack-md > * + *{margin-top:16px}
.stack-lg > * + *{margin-top:28px}
.rule{height:1px;background:var(--line);border:0;margin:24px 0}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;background:var(--paper);
  font-size:12px;font-weight:600;color:var(--brand-2);
}
.img-frame{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper)}
.site-header{box-shadow:0 1px 0 rgba(11,31,58,.04)}
.mega-grid + .mega-note{margin-top:12px;font-size:12px;color:var(--muted)}
.btn[disabled]{opacity:.5;pointer-events:none}
::selection{background:var(--accent-soft);color:var(--brand-ink)}
input,textarea,select{font-family:inherit} /* no forms shipped; keeps type consistent if added later */
@media (min-width:721px) and (max-width:859px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1025px) and (max-width:1099px){
  .nav-item > a{padding-inline:8px}
}

.float-cta a:hover{transform:translateY(-2px)}
.float-cta a{transition:transform 160ms var(--ease)}