/* =========================================================
   Suzhou Xinyu New Material Technology Co., Ltd.
   Redesigned Corporate Website — Style System
   Aesthetic: light editorial / engineering, red-blue palette,
   serif display headings, restrained whitespace.
   ========================================================= */

/* ---------- Design Tokens ---------- */
:root {
  --red: #C8102E;
  --red-dark: #9E0C24;
  --red-soft: #FBE9EC;
  --navy: #14315C;
  --navy-2: #0E1F3A;
  --blue: #1E5AA8;
  --blue-soft: #EAF1FA;
  --ink: #18202E;
  --muted: #5A6678;
  --line: #E3E8EF;
  --bg: #FFFFFF;
  --bg-soft: #F5F7FA;
  --bg-tint: #FBFCFE;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 3px rgba(16,31,58,.08);
  --shadow-md: 0 10px 30px rgba(16,31,58,.10);
  --shadow-lg: 0 24px 60px rgba(16,31,58,.16);
  --radius: 14px;
  --radius-sm: 8px;
  --maxw: 1200px;
  --serif: "Source Serif 4", "Noto Serif SC", "Songti SC", Georgia, serif;
  --sans: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }
h1,h2,h3,h4 { font-family: var(--serif); font-weight: 700; line-height: 1.18; color: var(--navy-2); margin: 0; letter-spacing: -.01em; }
p { margin: 0 0 1em; }

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.section--tint { background: var(--bg-tint); }
.section-head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--sans); font-size: 13px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase; color: var(--red);
  margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: var(--red); display: inline-block; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 17px; margin: 0; }
.text-red { color: var(--red); }
.text-blue { color: var(--blue); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 26px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1.5px solid transparent; transition: all .28s var(--ease); white-space: nowrap;
}
.btn--primary { background: var(--red); color: #fff; box-shadow: 0 8px 20px rgba(200,16,46,.28); }
.btn--primary:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 12px 26px rgba(200,16,46,.34); }
.btn--outline { border-color: rgba(20,49,92,.25); color: var(--navy); background: #fff; }
.btn--outline:hover { border-color: var(--red); color: var(--red); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn--ghost:hover { background: #fff; color: var(--navy-2); }
.btn .arrow { transition: transform .28s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.86); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark {
  width: 42px; height: 42px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--red), var(--red-dark));
  display: grid; place-items: center; color: #fff; position: relative; overflow: hidden;
}
.brand__mark::after { content:""; position:absolute; inset:0; background: linear-gradient(135deg, transparent 60%, rgba(255,255,255,.25)); }
.brand__mark svg { width: 24px; height: 24px; }
.brand__text { line-height: 1.15; }
.brand__name { font-family: var(--serif); font-weight: 700; font-size: 17px; color: var(--navy-2); letter-spacing: -.01em; }
.brand__sub { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }

.nav__menu { display: flex; align-items: center; gap: 4px; }
.nav__item { position: relative; }
.nav__link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 16px; font-size: 15px; font-weight: 500; color: var(--navy);
  border-radius: 8px; transition: color .2s, background .2s;
}
.nav__link:hover { color: var(--red); background: var(--red-soft); }
.nav__item.has-sub .nav__link::after { content: ""; width: 6px; height: 6px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg) translateY(-2px); opacity: .6; }
.nav__sub {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 240px;
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  box-shadow: var(--shadow-md); padding: 8px; opacity: 0; visibility: hidden;
  transform: translateY(8px); transition: all .22s var(--ease); z-index: 20;
}
.nav__item.has-sub:hover .nav__sub { opacity: 1; visibility: visible; transform: translateY(0); }
.nav__sub a { display: block; padding: 9px 14px; border-radius: 8px; font-size: 14px; color: var(--ink); }
.nav__sub a:hover { background: var(--blue-soft); color: var(--blue); }
.nav__cta { margin-left: 12px; }
.nav__toggle { display: none; background: none; border: 0; padding: 8px; }
.nav__toggle span { display: block; width: 24px; height: 2px; background: var(--navy-2); margin: 5px 0; transition: .3s; }

/* ---------- Hero ---------- */
.hero { position: relative; color: #fff; overflow: hidden; }
.hero__bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(1100px 600px at 78% -10%, rgba(30,90,168,.55), transparent 60%),
    radial-gradient(900px 500px at 8% 110%, rgba(200,16,46,.42), transparent 55%),
    linear-gradient(160deg, #0E1F3A 0%, #14315C 55%, #0B1830 100%);
}
.hero__grid {
  position: absolute; inset: 0; z-index: 0; opacity: .5;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(120% 90% at 70% 20%, #000 40%, transparent 100%);
}
.hero__inner { position: relative; z-index: 2; padding: 110px 0 120px; }
.hero__eyebrow { color: #ffd9df; }
.hero__eyebrow::before { background: #ffd9df; }
.hero h1 { color: #fff; font-size: clamp(34px, 5.4vw, 62px); line-height: 1.08; margin-bottom: 22px; }
.hero h1 .hl { color: #FFC9D2; }
.hero__lead { color: rgba(255,255,255,.82); font-size: clamp(16px, 1.6vw, 20px); max-width: 620px; margin-bottom: 34px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 56px; }
.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px; overflow: hidden; max-width: 820px;
}
.hero__stat { background: rgba(14,31,58,.35); padding: 22px 20px; }
.hero__stat b { font-family: var(--serif); font-size: 32px; display: block; color: #fff; }
.hero__stat span { font-size: 13px; color: rgba(255,255,255,.7); }
.hero__stat em { color: var(--red); font-style: normal; }

/* ---------- Marquee strip ---------- */
.strip { background: var(--navy-2); color: #fff; padding: 16px 0; overflow: hidden; }
.strip__track { display: flex; gap: 48px; white-space: nowrap; animation: marquee 28s linear infinite; width: max-content; }
.strip__track span { font-size: 14px; letter-spacing: .08em; color: rgba(255,255,255,.78); display: inline-flex; align-items: center; gap: 10px; }
.strip__track span::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--red); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Feature cards ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 26px; transition: all .3s var(--ease); position: relative; overflow: hidden;
}
.feature::before { content:""; position:absolute; left:0; top:0; height:3px; width:0; background: var(--red); transition: width .35s var(--ease); }
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.feature:hover::before { width: 100%; }
.feature__no { font-family: var(--serif); font-size: 15px; color: var(--red); font-weight: 700; letter-spacing: .1em; }
.feature__icon { width: 52px; height: 52px; border-radius: 12px; background: var(--blue-soft); color: var(--blue); display: grid; place-items: center; margin: 14px 0 18px; }
.feature__icon svg { width: 28px; height: 28px; }
.feature h3 { font-size: 20px; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: 14.5px; margin: 0; }

/* ---------- Process steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 24px; position: relative; }
.step__no { font-family: var(--serif); font-size: 46px; color: var(--red-soft); font-weight: 700; line-height: 1; }
.step h3 { font-size: 18px; margin: 10px 0 8px; }
.step p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- Product catalog ---------- */
.cat-tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 44px; }
.cat-tab {
  padding: 11px 22px; border-radius: 999px; border: 1.5px solid var(--line);
  background: #fff; font-size: 14.5px; font-weight: 600; color: var(--navy); transition: all .25s var(--ease);
}
.cat-tab:hover { border-color: var(--blue); color: var(--blue); }
.cat-tab.is-active { background: var(--navy); color: #fff; border-color: var(--navy); }

.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.prod-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .3s var(--ease); display: flex; flex-direction: column;
}
.prod-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.prod-card__media {
  height: 180px; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--navy-2), var(--blue)); display: grid; place-items: center;
}
.prod-card__media svg { width: 84px; height: 84px; color: rgba(255,255,255,.9); transition: transform .4s var(--ease); }
.prod-card:hover .prod-card__media svg { transform: scale(1.08) rotate(-3deg); }
.prod-card__tag { position: absolute; top: 14px; left: 14px; background: var(--red); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: .08em; padding: 5px 11px; border-radius: 999px; }
.prod-card__body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.prod-card__body h3 { font-size: 20px; margin-bottom: 8px; }
.prod-card__body p { font-size: 14px; color: var(--muted); margin: 0 0 16px; flex: 1; }
.prod-card__meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.chip { font-size: 12px; background: var(--bg-soft); color: var(--navy); border: 1px solid var(--line); padding: 5px 11px; border-radius: 999px; }
.prod-card__link { font-weight: 600; color: var(--red); font-size: 14.5px; display: inline-flex; align-items: center; gap: 6px; }
.prod-card__link:hover { gap: 10px; }

/* ---------- Parameter spec card ---------- */
.spec { border: 1.5px solid var(--line); border-left: 4px solid var(--red); border-radius: var(--radius-sm); padding: 22px 24px; background: #fff; }
.spec h4 { font-family: var(--sans); font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.spec__row { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 14.5px; }
.spec__row:last-child { border-bottom: 0; }
.spec__row span { color: var(--muted); }
.spec__row b { color: var(--navy-2); font-weight: 600; }

/* ---------- Two column feature block ---------- */
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.split__media { border-radius: var(--radius); overflow: hidden; background: linear-gradient(150deg, var(--navy), var(--blue)); aspect-ratio: 4/3; position: relative; display: grid; place-items: center; }
.split__media svg { width: 60%; color: rgba(255,255,255,.92); }
.split h2 { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 16px; }
.split p { color: var(--muted); }
.checklist { margin-top: 22px; display: grid; gap: 14px; }
.checklist li { display: flex; gap: 12px; align-items: flex-start; }
.checklist .ic { flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--red-soft); color: var(--red); display: grid; place-items: center; margin-top: 2px; }
.checklist .ic svg { width: 15px; height: 15px; }
.checklist b { color: var(--navy-2); font-weight: 600; }

/* ---------- Certifications ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; text-align: center; transition: all .3s var(--ease); }
.cert:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.cert__badge { width: 64px; height: 64px; margin: 0 auto 14px; border-radius: 14px; background: var(--blue-soft); color: var(--blue); display: grid; place-items: center; }
.cert__badge svg { width: 32px; height: 32px; }
.cert h3 { font-size: 16px; margin-bottom: 6px; }
.cert p { font-size: 13px; color: var(--muted); margin: 0; }

/* ---------- Cases ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card { border-radius: var(--radius); overflow: hidden; position: relative; aspect-ratio: 4/3; border: 1px solid var(--line); }
.case-card__bg { position: absolute; inset: 0; background: linear-gradient(150deg, var(--navy-2), var(--blue)); opacity: .9; transition: transform .5s var(--ease); }
.case-card:hover .case-card__bg { transform: scale(1.06); }
.case-card__overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(11,24,48,.92), rgba(11,24,48,.05) 55%); z-index: 1; }
.case-card__content { position: absolute; inset: 0; z-index: 2; padding: 24px; display: flex; flex-direction: column; justify-content: flex-end; }
.case-card__cat { align-self: flex-start; background: var(--red); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: .08em; padding: 4px 10px; border-radius: 999px; margin-bottom: auto; }
.case-card h3 { color: #fff; font-size: 19px; margin-bottom: 4px; }
.case-card p { color: rgba(255,255,255,.72); font-size: 13.5px; margin: 0; }

/* ---------- News ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .3s var(--ease); display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.news-card__media { height: 170px; background: linear-gradient(135deg, var(--navy), var(--blue)); display: grid; place-items: center; color: rgba(255,255,255,.9); }
.news-card__media svg { width: 54px; height: 54px; }
.news-card__body { padding: 22px 24px 26px; }
.news-card__date { font-size: 12.5px; color: var(--red); font-weight: 600; letter-spacing: .04em; }
.news-card h3 { font-size: 17.5px; margin: 8px 0 10px; line-height: 1.4; }
.news-card p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- Contact ---------- */
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); border: 1px solid var(--line); }
.contact-info { background: linear-gradient(155deg, var(--navy-2), var(--navy)); color: #fff; padding: 48px 44px; }
.contact-info h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.contact-info > p { color: rgba(255,255,255,.75); }
.contact-list { margin-top: 28px; display: grid; gap: 18px; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; }
.contact-list .ic { flex: none; width: 42px; height: 42px; border-radius: 10px; background: rgba(255,255,255,.1); color: #FFC9D2; display: grid; place-items: center; }
.contact-list .ic svg { width: 20px; height: 20px; }
.contact-list b { display: block; font-weight: 600; font-size: 14px; color: rgba(255,255,255,.65); letter-spacing: .04em; }
.contact-list a, .contact-list span { color: #fff; font-size: 16px; }
.contact-form { background: #fff; padding: 48px 44px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--navy); margin-bottom: 7px; }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 10px;
  font-family: inherit; font-size: 15px; color: var(--ink); transition: border .2s, box-shadow .2s; background: var(--bg-tint);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); background: #fff; }
.field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

/* ---------- CTA band ---------- */
.cta { background: linear-gradient(135deg, var(--red), var(--red-dark)); color: #fff; border-radius: 20px; padding: 56px 56px; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; position: relative; overflow: hidden; }
.cta::after { content:""; position:absolute; right:-60px; top:-60px; width: 240px; height: 240px; border-radius: 50%; background: rgba(255,255,255,.12); }
.cta h2 { color: #fff; font-size: clamp(24px,3vw,34px); margin-bottom: 8px; position: relative; z-index: 1; }
.cta p { color: rgba(255,255,255,.85); margin: 0; position: relative; z-index: 1; max-width: 540px; }

/* ---------- Footer ---------- */
.footer { background: var(--navy-2); color: rgba(255,255,255,.7); padding: 64px 0 28px; }
.footer__top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer__brand .brand__name { color: #fff; }
.footer__brand p { font-size: 14px; margin: 16px 0 18px; max-width: 320px; }
.footer h4 { color: #fff; font-family: var(--sans); font-size: 14px; letter-spacing: .06em; text-transform: uppercase; margin-bottom: 16px; }
.footer__links li { margin-bottom: 10px; }
.footer__links a { font-size: 14px; transition: color .2s; }
.footer__links a:hover { color: #FFC9D2; }
.footer__contact li { display: flex; gap: 10px; font-size: 14px; margin-bottom: 12px; align-items: flex-start; }
.footer__contact .ic { color: var(--red); flex: none; }
.footer__bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding-top: 22px; font-size: 13px; color: rgba(255,255,255,.5); }
.footer__bottom a { color: rgba(255,255,255,.6); }
.footer__bottom a:hover { color: #fff; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { background: var(--bg-soft); border-bottom: 1px solid var(--line); padding: 16px 0; font-size: 13.5px; color: var(--muted); }
.breadcrumb a { color: var(--blue); }
.breadcrumb span { color: var(--ink); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero { background: linear-gradient(160deg, var(--navy-2), var(--navy)); color: #fff; padding: 70px 0 80px; position: relative; overflow: hidden; }
.page-hero::after { 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: 48px 48px; mask-image: radial-gradient(100% 80% at 80% 0%, #000 30%, transparent 100%); }
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: clamp(30px, 4.4vw, 48px); margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,.78); max-width: 640px; margin: 0; }

/* ---------- Catalog detail cards (products page) ---------- */
.pcard {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: all .3s var(--ease); margin-bottom: 26px;
}
.pcard:hover { box-shadow: var(--shadow-md); border-color: transparent; }
.pcard__info { padding: 30px 32px; border-right: 1px solid var(--line); }
.pcard__cat { font-size: 12px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--red); margin-bottom: 10px; }
.pcard__info h3 { font-size: 23px; margin-bottom: 6px; }
.pcard__model { font-size: 13px; color: var(--blue); font-weight: 600; margin-bottom: 14px; }
.pcard__info p { font-size: 14.5px; color: var(--muted); margin-bottom: 16px; }
.pcard__apps { display: flex; flex-wrap: wrap; gap: 7px; }
.pcard__spec { padding: 30px 32px; background: var(--bg-tint); }
.pcard__spec .spec { border-left-color: var(--blue); }
.pcard__head { display:flex; align-items:center; gap:14px; margin-bottom:18px; }
.pcard__head .pic { width: 64px; height:64px; border-radius:12px; background: linear-gradient(135deg, var(--navy-2), var(--blue)); color:#fff; display:grid; place-items:center; flex:none; }
.pcard__head .pic svg { width:34px; height:34px; }
@media (max-width: 760px) {
  .pcard { grid-template-columns: 1fr; }
  .pcard__info { border-right: 0; border-bottom: 1px solid var(--line); }
}

/* ---------- Accordion (FAQ) ---------- */
.acc { border: 1px solid var(--line); border-radius: var(--radius-sm); margin-bottom: 12px; background:#fff; overflow:hidden; }
.acc__head { width:100%; text-align:left; background:none; border:0; padding:18px 22px; font-size:16px; font-weight:600; color:var(--navy-2); display:flex; justify-content:space-between; align-items:center; gap:14px; }
.acc__head .pm { flex:none; width:22px; height:22px; border-radius:50%; border:1.5px solid var(--red); color:var(--red); display:grid; place-items:center; font-size:16px; transition:.3s; }
.acc.open .acc__head .pm { transform: rotate(45deg); background:var(--red); color:#fff; }
.acc__body { max-height:0; overflow:hidden; transition:max-height .35s var(--ease); }
.acc.open .acc__body { max-height: 400px; }
.acc__body p { padding: 0 22px 20px; margin:0; color:var(--muted); font-size:14.5px; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .feature-grid, .steps, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .footer__top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .section { padding: 64px 0; }
  .nav__menu { position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md); padding: 12px; transform: translateY(-120%); transition: transform .3s var(--ease); max-height: calc(100vh - 72px); overflow-y: auto; }
  .nav__menu.is-open { transform: translateY(0); }
  .nav__sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0 0 8px 12px; }
  .nav__cta { margin: 10px 0 0; }
  .nav__toggle { display: block; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .feature-grid, .steps, .cert-grid, .prod-grid, .case-grid, .news-grid { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .cta { padding: 36px 28px; }
}