/* ============================================================
   金盾芯能源 · 官网主样式
   工业科技风 · 简洁专业 · B 端配色
   ============================================================ */

:root {
  --navy-950: #050a14;
  --navy-900: #070e1c;
  --navy-800: #0b1526;
  --navy-700: #10203a;
  --navy-600: #16294a;
  --blue: #1f66ff;
  --blue-dark: #0d4ad9;
  --blue-light: #4d86ff;
  --cyan: #26d0f5;
  --green: #22c55e;
  --amber: #f59e0b;
  --ink: #0e1a2e;
  --ink-2: #2a3b55;
  --muted: #64748b;
  --line: #e3e8f0;
  --bg: #f4f7fb;
  --bg-alt: #eef2f9;
  --white: #fff;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(14, 26, 46, .06);
  --shadow: 0 10px 30px rgba(14, 26, 46, .09);
  --shadow-lg: 0 24px 60px rgba(7, 14, 28, .18);
  --grad: linear-gradient(120deg, var(--blue) 0%, var(--cyan) 100%);
  --container: 1240px;
  --header-h: 76px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  font-size: 15px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: inherit; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
::selection { background: rgba(31, 102, 255, .18); }

/* ---------------------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 22px; border-radius: var(--radius-sm);
  border: 1px solid transparent; font-size: 15px; font-weight: 600;
  letter-spacing: .2px; transition: all .22s ease; white-space: nowrap; cursor: pointer;
}
.btn-sm { height: 36px; padding: 0 16px; font-size: 13.5px; }
.btn-lg { height: 52px; padding: 0 30px; font-size: 16px; }
.btn-block { width: 100%; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 22px rgba(31, 102, 255, .28); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(31, 102, 255, .38); }
.btn-outline { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-outline:hover { border-color: var(--blue); color: var(--blue); box-shadow: var(--shadow-sm); }
.btn-dark { background: var(--navy-800); color: #fff; }
.btn-dark:hover { background: var(--navy-700); }
.btn-ghost { border-color: rgba(255, 255, 255, .28); color: #fff; background: rgba(255, 255, 255, .04); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255, 255, 255, .12); }
.btn-outline-light { border-color: rgba(255, 255, 255, .35); color: #fff; }
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); }

/* ---------------------------------------------------------- topbar/header */
.topbar { background: var(--navy-950); color: #9fb2cc; font-size: 12.5px; }
.topbar-inner { display: flex; justify-content: space-between; align-items: center; height: 38px; }
.topbar-left, .topbar-right { display: flex; gap: 22px; align-items: center; }
.topbar span, .topbar a { display: inline-flex; align-items: center; gap: 6px; color: #9fb2cc; }
.topbar a:hover { color: #fff; }
.topbar-lang { font-weight: 600; color: #cfdcf2 !important; }

.site-header {
  position: sticky; top: 0; z-index: 90;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid rgba(14, 26, 46, .07);
  transition: box-shadow .25s;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(7, 14, 28, .08); }
.header-inner { display: flex; align-items: center; gap: 28px; height: var(--header-h); }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo img { border-radius: 10px; }
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-text strong { font-size: 17px; letter-spacing: .5px; }
.logo-text em { font-style: normal; font-size: 10.5px; color: var(--muted); letter-spacing: .4px; max-width: 230px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.main-nav > a {
  position: relative; padding: 10px 11px; font-size: 14px; font-weight: 500; color: var(--ink-2);
  border-radius: 8px; white-space: nowrap;
}
.main-nav > a:hover { color: var(--blue); background: rgba(31, 102, 255, .06); }
.main-nav > a.active { color: var(--blue); font-weight: 700; }
.main-nav > a.active::after {
  content: ""; position: absolute; left: 13px; right: 13px; bottom: 2px; height: 2.5px;
  background: var(--grad); border-radius: 2px;
}
.main-nav .nav-cta { display: none; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; border-radius: 10px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.nav-toggle span { width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: .25s; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------------------------------------------------- hero */
.hero { position: relative; background: var(--navy-950); color: #fff; overflow: hidden; }
.hero-slider { position: relative; height: clamp(460px, 62vh, 640px); }
.hero-slide {
  position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .8s ease, visibility .8s;
  display: flex; align-items: center;
}
.hero-slide.active { opacity: 1; visibility: visible; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(900px 500px at 78% 30%, rgba(38, 208, 245, .16), transparent 60%),
    linear-gradient(95deg, rgba(5, 10, 20, .96) 0%, rgba(5, 10, 20, .82) 45%, rgba(5, 10, 20, .45) 100%);
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-content { position: relative; z-index: 2; max-width: 780px; padding: 90px 24px 110px; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 10px; font-size: 12.5px; letter-spacing: 3.5px;
  color: var(--cyan); font-weight: 700; margin-bottom: 20px;
}
.hero-kicker::before { content: ""; width: 34px; height: 2px; background: var(--grad); }
.hero-content h1 {
  font-size: clamp(30px, 4.6vw, 54px); line-height: 1.18; font-weight: 800; letter-spacing: .5px;
  background: linear-gradient(100deg, #ffffff 20%, #bcd6ff 60%, #7ce4ff 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  margin-bottom: 20px;
}
.hero-content p { font-size: clamp(15px, 1.6vw, 18px); color: #b9c8de; max-width: 620px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-dots { position: absolute; left: 50%; transform: translateX(-50%); bottom: 118px; z-index: 3; display: flex; gap: 10px; }
.hero-dots button { width: 34px; height: 4px; border: none; border-radius: 4px; background: rgba(255, 255, 255, .25); transition: .3s; }
.hero-dots button.active { background: var(--grad); width: 52px; }
.hero-stats { position: relative; z-index: 4; background: rgba(10, 18, 32, .92); border-top: 1px solid rgba(255, 255, 255, .08); backdrop-filter: blur(8px); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 22px 24px; text-align: center; border-right: 1px solid rgba(255, 255, 255, .07); }
.stat:last-child { border-right: none; }
.stat strong { display: block; font-size: clamp(22px, 2.6vw, 32px); font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat span { font-size: 12.5px; color: #8fa3bf; letter-spacing: .5px; }

/* ---------------------------------------------------------- sections */
.section { padding: 84px 0; }
.section-alt { background: var(--bg); }
.section-dark { background: var(--navy-900); color: #dbe6f7; }
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: #93a6c2; }
.section-head { max-width: 760px; margin: 0 auto 48px; text-align: center; }
.section-head h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; letter-spacing: .5px; color: var(--ink); }
.section-head h2::after {
  content: ""; display: block; width: 46px; height: 3px; background: var(--grad);
  border-radius: 3px; margin: 16px auto 0;
}
.section-head p { margin-top: 14px; color: var(--muted); font-size: 15.5px; }
.section-head.light h2 { color: #fff; }
.section-head.light p { color: #93a6c2; }
.section-more { text-align: center; margin-top: 40px; }
.eyebrow { display: inline-block; font-size: 12.5px; font-weight: 700; letter-spacing: 2.5px; color: var(--blue); text-transform: uppercase; margin-bottom: 12px; }

/* ---------------------------------------------------------- core business */
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.biz-card {
  position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 26px 28px; overflow: hidden; transition: all .28s ease;
}
.biz-card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 3px; background: var(--grad);
  transform: scaleX(0); transform-origin: left; transition: transform .35s ease;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.biz-card:hover::before { transform: scaleX(1); }
.biz-index { position: absolute; top: 20px; right: 22px; font-size: 34px; font-weight: 800; color: rgba(31, 102, 255, .08); font-style: italic; }
.biz-icon {
  display: inline-flex; align-items: center; justify-content: center; width: 60px; height: 60px;
  border-radius: 14px; background: linear-gradient(140deg, rgba(31, 102, 255, .1), rgba(38, 208, 245, .14));
  color: var(--blue); margin-bottom: 20px;
}
.biz-card h3 { font-size: 19px; margin-bottom: 10px; }
.biz-card p { color: var(--muted); font-size: 14px; min-height: 66px; }
.link-more { display: inline-flex; align-items: center; gap: 6px; color: var(--blue); font-weight: 600; font-size: 14px; margin-top: 14px; }
.link-more i { font-style: normal; transition: transform .25s; }
.link-more:hover i { transform: translateX(5px); }

/* ---------------------------------------------------------- advantages */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv-card {
  position: relative; padding: 34px 26px; border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255, 255, 255, .06), rgba(255, 255, 255, .02));
  border: 1px solid rgba(255, 255, 255, .09); transition: all .28s ease;
}
.adv-card:hover { border-color: rgba(38, 208, 245, .45); transform: translateY(-6px); background: linear-gradient(160deg, rgba(31, 102, 255, .14), rgba(38, 208, 245, .05)); }
.adv-icon { display: inline-flex; align-items: center; justify-content: center; width: 54px; height: 54px; border-radius: 12px; background: rgba(38, 208, 245, .12); color: var(--cyan); margin-bottom: 18px; }
.adv-card h3 { font-size: 18px; color: #fff; margin-bottom: 10px; }
.adv-card p { color: #93a6c2; font-size: 14px; }

/* ---------------------------------------------------------- applications */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.app-item {
  display: flex; align-items: center; gap: 14px; padding: 22px 24px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); font-weight: 600; transition: all .25s;
}
.app-item:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-3px); }
.app-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--grad); box-shadow: 0 0 0 5px rgba(31, 102, 255, .1); flex-shrink: 0; }
.app-name { font-size: 15.5px; }

/* ---------------------------------------------------------- product cards */
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; transition: all .28s ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.pc-media { position: relative; aspect-ratio: 4 / 3; background: var(--navy-900); overflow: hidden; }
.pc-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.product-card:hover .pc-media img { transform: scale(1.06); }
.pc-model {
  position: absolute; left: 12px; bottom: 12px; background: rgba(5, 10, 20, .72); color: #cfe0ff;
  font-size: 11.5px; font-weight: 600; padding: 4px 10px; border-radius: 6px; backdrop-filter: blur(4px);
  letter-spacing: .4px;
}
.pc-body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.pc-body h3 { font-size: 16.5px; line-height: 1.45; margin-bottom: 8px; }
.pc-body p { color: var(--muted); font-size: 13.5px; flex: 1; }
.pc-certs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.pc-certs span {
  font-size: 11px; font-weight: 600; color: var(--blue); background: rgba(31, 102, 255, .08);
  border: 1px solid rgba(31, 102, 255, .16); padding: 2px 8px; border-radius: 4px;
}
.pc-body .link-more { margin-top: 16px; }

/* ---------------------------------------------------------- solution / case cards */
.solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.solution-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .28s; display: flex; flex-direction: column; }
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.sc-media { aspect-ratio: 16 / 10; background: var(--navy-900); overflow: hidden; }
.sc-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.solution-card:hover .sc-media img { transform: scale(1.05); }
.sc-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.sc-tag { align-self: flex-start; font-size: 11.5px; font-weight: 700; letter-spacing: 1px; color: var(--cyan); background: rgba(38, 208, 245, .1); border: 1px solid rgba(38, 208, 245, .25); padding: 3px 10px; border-radius: 20px; margin-bottom: 12px; }
.sc-body h3 { font-size: 18px; margin-bottom: 9px; }
.sc-body p { color: var(--muted); font-size: 13.5px; flex: 1; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .28s; display: flex; flex-direction: column; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.case-media { position: relative; aspect-ratio: 16 / 10; background: var(--navy-900); overflow: hidden; }
.case-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-media img { transform: scale(1.05); }
.case-industry { position: absolute; top: 12px; left: 12px; background: rgba(5, 10, 20, .74); color: #9fdcff; font-size: 11.5px; padding: 3px 10px; border-radius: 6px; }
.case-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.case-body h3 { font-size: 17px; margin-bottom: 9px; }
.case-body p { color: var(--muted); font-size: 13.5px; flex: 1; }

/* ---------------------------------------------------------- partners */
.partner-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 14px; }
.partner-item { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px; transition: all .25s; }
.partner-item:hover { border-color: var(--blue); box-shadow: var(--shadow-sm); }
.partner-item img { width: 100%; height: auto; opacity: .85; }

/* ---------------------------------------------------------- news cards */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .28s; display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.nc-media { aspect-ratio: 16 / 9; background: var(--navy-900); overflow: hidden; }
.nc-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-card:hover .nc-media img { transform: scale(1.05); }
.nc-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.nc-meta { display: flex; align-items: center; gap: 12px; font-size: 12.5px; color: var(--muted); margin-bottom: 12px; flex-wrap: wrap; }
.nc-cat { color: var(--blue); font-weight: 700; background: rgba(31, 102, 255, .08); padding: 2px 9px; border-radius: 4px; }
.nc-body h3 { font-size: 16.5px; line-height: 1.5; margin-bottom: 9px; }
.nc-body p { color: var(--muted); font-size: 13.5px; flex: 1; }

/* ---------------------------------------------------------- news list (page) */
.filter-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.filter-tabs a { padding: 9px 20px; border: 1px solid var(--line); border-radius: 30px; font-size: 14px; font-weight: 500; background: #fff; }
.filter-tabs a:hover { border-color: var(--blue); color: var(--blue); }
.filter-tabs a.active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(31, 102, 255, .25); }
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-row { display: grid; grid-template-columns: 300px 1fr; gap: 26px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .28s; }
.news-row:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.nr-media { aspect-ratio: 16 / 10; background: var(--navy-900); overflow: hidden; }
.nr-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-row:hover .nr-media img { transform: scale(1.05); }
.nr-body { padding: 26px 26px 26px 0; display: flex; flex-direction: column; }
.nr-body h3 { font-size: 20px; margin-bottom: 10px; }
.nr-body p { color: var(--muted); flex: 1; }

/* ---------------------------------------------------------- page hero */
.page-hero { position: relative; background: var(--navy-900); color: #fff; padding: 66px 0 54px; overflow: hidden; }
.page-hero-deco {
  position: absolute; inset: 0; opacity: .9;
  background:
    radial-gradient(600px 320px at 82% 10%, rgba(38, 208, 245, .18), transparent 65%),
    linear-gradient(90deg, rgba(31, 102, 255, .12), transparent 40%);
}
.page-hero-deco::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 85%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(26px, 3.4vw, 40px); font-weight: 800; letter-spacing: .5px; margin-top: 14px; }
.page-hero-sub { color: #a9bcd8; margin-top: 12px; max-width: 720px; font-size: 15.5px; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 13px; color: #7f93b3; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb em { font-style: normal; color: #cfdcf2; }

/* ---------------------------------------------------------- products page */
.products-layout { display: grid; grid-template-columns: 260px 1fr; gap: 36px; align-items: start; }
.products-sidebar { position: sticky; top: calc(var(--header-h) + 20px); display: flex; flex-direction: column; gap: 20px; }
.sidebar-block { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.sidebar-block h3 { font-size: 16px; margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.cat-list li + li { margin-top: 4px; }
.cat-list a { display: block; padding: 10px 12px; border-radius: 8px; font-size: 14px; color: var(--ink-2); }
.cat-list a:hover { background: var(--bg); color: var(--blue); }
.cat-list a.active { background: rgba(31, 102, 255, .09); color: var(--blue); font-weight: 700; }
.sidebar-help { background: linear-gradient(160deg, var(--navy-900), var(--navy-700)); color: #cddcf3; }
.sidebar-help h3 { border-color: rgba(255, 255, 255, .12); color: #fff; }
.sidebar-help p { font-size: 13.5px; color: #9fb2cc; margin-bottom: 16px; }
.sidebar-phone { margin-top: 16px; color: #9fb2cc; font-size: 13px; }
.sidebar-phone strong { color: #fff; font-size: 17px; }
.products-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 18px; margin-bottom: 24px; flex-wrap: wrap; }
.search-form { display: flex; gap: 10px; flex: 1; max-width: 420px; }
.search-form input {
  flex: 1; height: 42px; padding: 0 16px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: #fff; outline: none; transition: border-color .2s;
}
.search-form input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(31, 102, 255, .1); }
.products-count { font-size: 13.5px; color: var(--muted); }

/* ---------------------------------------------------------- pagination */
.pagination { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 44px; flex-wrap: wrap; }
.page-num, .page-btn {
  min-width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  padding: 0 14px; border: 1px solid var(--line); border-radius: 8px; background: #fff;
  font-size: 14px; font-weight: 500; transition: all .2s;
}
.page-num:hover, .page-btn:hover { border-color: var(--blue); color: var(--blue); }
.page-num.active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(31, 102, 255, .25); }
.page-info { font-size: 13.5px; color: var(--muted); padding: 0 6px; }

/* ---------------------------------------------------------- product detail */
.product-detail { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 48px; align-items: start; }
.pd-main { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--navy-900); aspect-ratio: 4 / 3; }
.pd-main img { width: 100%; height: 100%; object-fit: cover; }
.pd-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.pd-thumb { width: 76px; height: 76px; border: 2px solid var(--line); border-radius: 8px; overflow: hidden; padding: 0; background: var(--navy-900); transition: border-color .2s; }
.pd-thumb.active { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(31, 102, 255, .12); }
.pd-thumb img { width: 100%; height: 100%; object-fit: cover; }
.pd-video { margin-top: 14px; }
.pd-video video { width: 100%; border-radius: var(--radius); }
.pd-info h1 { font-size: clamp(22px, 2.6vw, 30px); line-height: 1.35; margin: 10px 0 14px; }
.pd-meta { display: flex; gap: 14px; align-items: center; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.pd-cat { color: var(--blue); font-weight: 700; background: rgba(31, 102, 255, .08); padding: 3px 10px; border-radius: 5px; }
.pd-model { letter-spacing: .4px; }
.pd-summary { color: var(--ink-2); font-size: 15px; margin-bottom: 18px; }
.pd-certs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.cert-badge {
  font-size: 12px; font-weight: 600; color: var(--blue); border: 1px solid rgba(31, 102, 255, .22);
  background: rgba(31, 102, 255, .06); padding: 4px 12px; border-radius: 20px;
}
.pd-quick-specs { width: 100%; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 24px; font-size: 13.5px; }
.pd-quick-specs tr:nth-child(even) { background: var(--bg); }
.pd-quick-specs th, .pd-quick-specs td { padding: 9px 14px; text-align: left; }
.pd-quick-specs th { width: 42%; color: var(--muted); font-weight: 500; border-right: 1px solid var(--line); }
.pd-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.pd-tip { font-size: 13px; color: var(--muted); margin-top: 16px; }
.pd-sections { max-width: 960px; }
.pd-block { margin-bottom: 52px; }
.pd-block:last-child { margin-bottom: 0; }
.pd-block h2 { font-size: 22px; margin-bottom: 18px; padding-left: 14px; border-left: 4px solid; border-image: var(--grad) 1; }
.feature-list li { position: relative; padding: 10px 0 10px 30px; border-bottom: 1px dashed var(--line); color: var(--ink-2); }
.feature-list li::before {
  content: ""; position: absolute; left: 4px; top: 19px; width: 8px; height: 8px; border-radius: 2px;
  background: var(--grad); transform: rotate(45deg);
}
.spec-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-sm); }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 520px; }
.spec-table thead th { background: var(--navy-800); color: #fff; text-align: left; padding: 13px 18px; font-size: 13px; letter-spacing: .6px; }
.spec-table td { padding: 12px 18px; border-bottom: 1px solid var(--line); }
.spec-table tbody tr:nth-child(even) { background: var(--bg); }
.spec-table tbody tr:hover { background: rgba(31, 102, 255, .04); }
.pd-apps { color: var(--ink-2); }
.service-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 20px; }
.service-grid > div { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px; text-align: center; }
.service-grid strong { display: block; color: var(--blue); font-size: 14.5px; margin-bottom: 6px; }
.service-grid span { font-size: 13px; color: var(--muted); }

/* ---------------------------------------------------------- rich content */
.rich { color: var(--ink-2); font-size: 15px; }
.rich p { margin-bottom: 16px; }
.rich h3 { font-size: 18px; color: var(--ink); margin: 24px 0 12px; }
.rich ul, .rich ol { margin: 0 0 16px 22px; }
.rich ul li { list-style: disc; margin-bottom: 8px; }
.rich ol li { list-style: decimal; margin-bottom: 8px; }
.rich a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.rich img { border-radius: var(--radius-sm); margin: 10px 0; }
.rich strong { color: var(--ink); }

/* ---------------------------------------------------------- about */
.about-intro { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.about-text h2 { font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 20px; }
.about-badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.about-badges span { font-size: 12.5px; font-weight: 600; color: var(--ink-2); border: 1px solid var(--line); background: var(--bg); padding: 6px 14px; border-radius: 20px; }
.about-media > img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.about-media-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.about-media-grid img { border-radius: var(--radius-sm); aspect-ratio: 16/10; object-fit: cover; }
.timeline { position: relative; max-width: 820px; margin: 0 auto; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--blue), var(--cyan), transparent); }
.timeline li { position: relative; padding: 0 0 38px 34px; }
.timeline li::before {
  content: ""; position: absolute; left: -30px; top: 6px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--navy-900); border: 3px solid var(--cyan); box-shadow: 0 0 0 5px rgba(38, 208, 245, .12);
}
.tl-year { display: inline-block; font-size: 20px; font-weight: 800; color: var(--cyan); letter-spacing: 1px; margin-bottom: 6px; }
.tl-body h3 { font-size: 17px; color: #fff; margin-bottom: 6px; }
.tl-body p { color: #93a6c2; font-size: 14px; }
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: start; }
.split-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.split-gallery figure, .gallery-item { position: relative; border-radius: var(--radius-sm); overflow: hidden; margin: 0; }
.split-gallery img, .gallery-item img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: transform .5s; }
.split-gallery figure:hover img, .gallery-item:hover img { transform: scale(1.05); }
.split-gallery figcaption, .gallery-item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 14px 10px; font-size: 13px; color: #fff;
  background: linear-gradient(transparent, rgba(5, 10, 20, .82));
}
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.gallery-subtitle { font-size: 18px; margin: 36px 0 16px; }
.factory-text { margin-bottom: 30px; }
.culture-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.culture-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 24px; transition: all .28s; }
.culture-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.culture-card > span { font-size: 26px; font-weight: 800; color: rgba(31, 102, 255, .16); font-style: italic; }
.culture-card h3 { font-size: 17px; margin: 10px 0 8px; }
.culture-card p { font-size: 13.5px; color: var(--muted); }
.culture-rich { max-width: 860px; margin-top: 34px; }

/* ---------------------------------------------------------- solution detail / case detail */
.solution-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-bottom: 56px; }
.sd-media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.sd-body h2 { font-size: clamp(22px, 2.6vw, 30px); margin: 12px 0 18px; }
.solution-split { display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; margin-bottom: 70px; }
.sd-panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.sd-panel h2 { font-size: 19px; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.adv-list li { position: relative; padding: 9px 0 9px 28px; color: var(--ink-2); font-size: 14.5px; }
.adv-list li::before { content: "✓"; position: absolute; left: 0; top: 9px; color: var(--blue); font-weight: 800; }
.rec-list li { display: flex; gap: 10px; align-items: center; padding: 9px 0; font-size: 14.5px; }
.rec-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--grad); flex-shrink: 0; }
.rec-list { margin-bottom: 18px; }
.case-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: start; margin-bottom: 34px; }
.casc-media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); }
.case-facts { display: flex; flex-direction: column; gap: 18px; }
.fact { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 22px; }
.fact > span { display: block; font-size: 12.5px; font-weight: 700; letter-spacing: 1.5px; color: var(--blue); margin-bottom: 8px; text-transform: uppercase; }
.fact strong, .fact p { color: var(--ink-2); font-size: 14.5px; }
.case-note { margin-top: 26px; color: var(--muted); font-size: 13px; text-align: center; }

/* ---------------------------------------------------------- certificates */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.cert-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .28s; display: flex; flex-direction: column; }
.cert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.cert-thumb { border: none; padding: 0; background: var(--bg); aspect-ratio: 3/4; overflow: hidden; cursor: zoom-in; }
.cert-thumb img { width: 100%; height: 100%; object-fit: cover; }
.cert-body { padding: 18px 18px 20px; flex: 1; display: flex; flex-direction: column; }
.cert-body h3 { font-size: 15.5px; margin-bottom: 8px; }
.cert-body p { font-size: 12.5px; color: var(--muted); margin-bottom: 3px; }
.cert-no { word-break: break-all; }
.cert-actions { display: flex; gap: 8px; margin-top: auto; padding-top: 14px; flex-wrap: wrap; }

/* ---------------------------------------------------------- downloads */
.download-list { display: flex; flex-direction: column; gap: 14px; }
.download-item { display: flex; align-items: center; gap: 20px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; transition: all .25s; }
.download-item:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-2px); }
.dl-icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 12px; background: linear-gradient(140deg, rgba(31, 102, 255, .1), rgba(38, 208, 245, .14)); color: var(--blue); flex-shrink: 0; }
.dl-info { flex: 1; min-width: 0; }
.dl-info h3 { font-size: 16px; margin-bottom: 6px; }
.dl-meta { display: flex; gap: 16px; font-size: 12.5px; color: var(--muted); flex-wrap: wrap; }
.dl-cat { color: var(--blue); font-weight: 600; }
.dl-actions { display: flex; gap: 10px; flex-shrink: 0; }

/* ---------------------------------------------------------- article */
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; align-items: start; }
.article-meta { display: flex; gap: 16px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 22px; flex-wrap: wrap; }
.article-cover { border-radius: var(--radius); overflow: hidden; margin-bottom: 28px; }
.article-content { font-size: 15.5px; }
.article-actions { display: flex; justify-content: space-between; margin-top: 40px; padding-top: 26px; border-top: 1px solid var(--line); }
.article-side { position: sticky; top: calc(var(--header-h) + 20px); }
.article-side h3 { font-size: 16px; margin-bottom: 18px; }
.related-item { display: flex; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px dashed var(--line); }
.related-item img { width: 74px; height: 50px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.related-item span { font-size: 13.5px; color: var(--ink-2); line-height: 1.5; }
.related-item:hover span { color: var(--blue); }
.side-cta { margin-top: 26px; background: linear-gradient(160deg, var(--navy-900), var(--navy-700)); border-radius: var(--radius); padding: 24px; color: #cddcf3; }
.side-cta h4 { color: #fff; font-size: 15.5px; margin-bottom: 8px; }
.side-cta p { font-size: 13px; color: #9fb2cc; margin-bottom: 14px; }

/* ---------------------------------------------------------- inquiry / forms */
.inquiry-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.inquiry-intro h2 { font-size: clamp(22px, 2.4vw, 30px); color: #fff; margin-bottom: 14px; }
.inquiry-intro > p { color: #9fb2cc; margin-bottom: 24px; }
.inquiry-points li { position: relative; padding: 8px 0 8px 28px; color: #cddcf3; }
.inquiry-points li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 800; }
.inquiry-contact { color: #9fb2cc; font-size: 14px; margin-top: 14px; }
.inquiry-contact a { color: var(--cyan); }
.inquiry-form-wrap { background: #fff; border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-lg); }
.section-dark .inquiry-form-wrap { background: #fff; }
.form-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 18px; }
.form-item { grid-column: span 6; display: flex; flex-direction: column; gap: 8px; }
.form-item-full { grid-column: span 12; }
.form-item label { font-size: 13.5px; font-weight: 600; color: var(--ink-2); display: flex; gap: 4px; align-items: center; }
.form-item label em { color: #e11d48; font-style: normal; }
.form-item input, .form-item textarea, .form-item select {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: #fff; outline: none; transition: all .2s; color: var(--ink); font-size: 14.5px;
}
.form-item input:focus, .form-item textarea:focus, .form-item select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(31, 102, 255, .1); }
.form-item textarea { resize: vertical; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-tip { font-size: 12.5px; color: var(--muted); margin-top: 14px; text-align: center; }
.inquiry-form .btn-block { margin-top: 22px; }
.alert { border-radius: var(--radius-sm); padding: 13px 18px; margin-bottom: 18px; font-size: 14px; }
.alert-ok { background: rgba(34, 197, 94, .1); border: 1px solid rgba(34, 197, 94, .3); color: #15803d; }

/* ---------------------------------------------------------- contact */
.contact-layout { display: grid; grid-template-columns: .95fr 1.05fr; gap: 48px; align-items: start; }
.contact-info h2 { font-size: 24px; margin-bottom: 24px; }
.contact-list { display: flex; flex-direction: column; gap: 20px; margin-bottom: 28px; }
.contact-list li { display: flex; gap: 16px; }
.ci-icon { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(140deg, rgba(31, 102, 255, .1), rgba(38, 208, 245, .14)); color: var(--blue); flex-shrink: 0; }
.contact-list strong { display: block; font-size: 13px; color: var(--muted); font-weight: 600; margin-bottom: 3px; }
.contact-list p { font-size: 15px; color: var(--ink); }
.contact-list a:hover { color: var(--blue); }
.contact-map { margin-top: 8px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.contact-map iframe { width: 100%; height: 260px; border: 0; display: block; }
.contact-map-link { position: relative; display: block; margin-top: 8px; border-radius: var(--radius); overflow: hidden; }
.contact-map-link img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.contact-map-link span { position: absolute; left: 18px; bottom: 16px; background: rgba(5, 10, 20, .78); color: #fff; padding: 8px 16px; border-radius: 8px; font-size: 14px; }
.contact-form-col h2 { font-size: 24px; margin-bottom: 8px; }
.contact-form-sub { color: var(--muted); margin-bottom: 26px; }

/* ---------------------------------------------------------- faq */
.faq-layout { max-width: 880px; margin: 0 auto; }
.faq-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 70px; }
.faq-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .25s; }
.faq-item[open] { border-color: rgba(31, 102, 255, .35); box-shadow: var(--shadow-sm); }
.faq-item summary {
  display: flex; justify-content: space-between; align-items: center; gap: 18px;
  padding: 20px 24px; cursor: pointer; font-weight: 600; font-size: 16px; list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i { position: relative; width: 18px; height: 18px; flex-shrink: 0; }
.faq-item summary i::before, .faq-item summary i::after {
  content: ""; position: absolute; background: var(--blue); border-radius: 2px; transition: transform .25s;
}
.faq-item summary i::before { top: 8px; left: 0; width: 18px; height: 2px; }
.faq-item summary i::after { top: 0; left: 8px; width: 2px; height: 18px; }
.faq-item[open] summary i::after { transform: scaleY(0); }
.faq-answer { padding: 0 24px 22px; color: var(--muted); font-size: 14.5px; }

/* ---------------------------------------------------------- cta band */
.cta-band { position: relative; background: var(--navy-900); color: #fff; padding: 66px 0; overflow: hidden; }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(700px 360px at 20% 20%, rgba(31, 102, 255, .28), transparent 65%), radial-gradient(600px 320px at 85% 80%, rgba(38, 208, 245, .2), transparent 65%);
}
.cta-inner { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 40px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(22px, 2.6vw, 30px); margin-bottom: 10px; }
.cta-inner p { color: #a9bcd8; max-width: 620px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------------------------------------------------------- footer */
.site-footer { background: var(--navy-950); color: #93a6c2; padding-top: 66px; position: relative; }
.site-footer::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(38, 208, 245, .5), transparent);
}
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 44px; padding-bottom: 50px; }
.footer-col h4 { color: #fff; font-size: 15px; letter-spacing: .8px; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 2px; background: var(--grad); }
.footer-col ul li { margin-bottom: 11px; font-size: 14px; }
.footer-col a:hover { color: var(--cyan); }
.footer-about p { font-size: 13.5px; line-height: 1.8; margin: 18px 0; }
.footer-logo img { height: 40px; width: auto; }
.footer-certs { display: flex; gap: 8px; flex-wrap: wrap; }
.footer-certs span { font-size: 11px; border: 1px solid rgba(255, 255, 255, .15); padding: 3px 10px; border-radius: 4px; color: #9fb2cc; }
.footer-contact li { color: #93a6c2; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .08); padding: 20px 0; font-size: 12.5px; }
.footer-bottom-inner { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 18px; }
.footer-links a:hover { color: var(--cyan); }

/* ---------------------------------------------------------- floating */
.float-service {
  position: fixed; right: 22px; bottom: 92px; z-index: 80; display: flex; align-items: center; gap: 10px;
  background: var(--grad); color: #fff; padding: 12px 18px; border-radius: 30px;
  box-shadow: 0 12px 30px rgba(31, 102, 255, .35); font-size: 14px; font-weight: 600;
}
.float-service:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(31, 102, 255, .45); }
.fs-icon { display: inline-flex; }
.back-top {
  position: fixed; right: 22px; bottom: 30px; z-index: 80; width: 46px; height: 46px; border-radius: 12px;
  border: 1px solid var(--line); background: #fff; color: var(--ink); display: none; align-items: center; justify-content: center;
  box-shadow: var(--shadow); transition: all .2s;
}
.back-top.show { display: inline-flex; }
.back-top:hover { border-color: var(--blue); color: var(--blue); }

/* ---------------------------------------------------------- empty / 404 */
.empty-state { text-align: center; padding: 70px 20px; color: var(--muted); }
.empty-state svg { opacity: .4; margin: 0 auto 14px; }
.error-page { text-align: center; padding: 100px 0 120px; }
.error-code {
  font-size: clamp(90px, 16vw, 160px); font-weight: 900; line-height: 1;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.error-page h1 { font-size: 26px; margin: 12px 0 10px; }
.error-page p { color: var(--muted); margin-bottom: 28px; }
.error-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------------------------------------------------------- reveal animation */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease var(--d, 0ms), transform .7s cubic-bezier(.22, .68, .32, 1) var(--d, 0ms); }
.reveal.in-view { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------------------------------------------------------- lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200; background: rgba(5, 10, 20, .92);
  display: none; align-items: center; justify-content: center; padding: 40px; cursor: zoom-out;
}
.lightbox.show { display: flex; }
.lightbox img { max-width: 92vw; max-height: 90vh; border-radius: 8px; box-shadow: var(--shadow-lg); }

/* ---------------------------------------------------------- responsive */
@media (max-width: 1280px) {
  .header-inner { gap: 18px; }
  .main-nav > a { padding: 10px 9px; font-size: 13.5px; }
  .logo-text em { max-width: 180px; }
}
@media (max-width: 1180px) {
  .partner-grid { grid-template-columns: repeat(4, 1fr); }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .header-actions .hide-sm { display: none; }
  .main-nav > a { padding: 10px 8px; font-size: 13px; }
  .logo-text em { display: none; }
}
@media (max-width: 1024px) {
  .section { padding: 64px 0; }
  .biz-grid, .adv-grid, .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .news-grid, .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
  .products-layout { grid-template-columns: 1fr; }
  .products-sidebar { position: static; flex-direction: row; }
  .products-sidebar .sidebar-block { flex: 1; }
  .product-detail, .about-intro, .split, .solution-detail, .case-detail,
  .contact-layout, .inquiry-layout, .article-layout, .solution-split { grid-template-columns: 1fr; }
  .article-side { position: static; }
  .inquiry-intro h2 { color: #fff; }
  .pd-sections { max-width: none; }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { padding-left: 20px; }
  .main-nav > a { padding: 10px 9px; font-size: 13.5px; }
}
@media (max-width: 1024px) {
  .topbar-left .hide-sm, .topbar-right .hide-sm { display: none; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 0; right: 0; bottom: 0; width: min(82vw, 340px); z-index: 120;
    background: #fff; flex-direction: column; align-items: stretch; gap: 2px; padding: 86px 22px 30px;
    transform: translateX(105%); transition: transform .32s cubic-bezier(.4, 0, .2, 1);
    box-shadow: -18px 0 50px rgba(7, 14, 28, .16); overflow-y: auto; margin-left: 0;
  }
  .nav-open .main-nav { transform: none; }
  .main-nav > a { padding: 14px 12px; font-size: 15.5px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .main-nav > a.active::after { display: none; }
  .main-nav .nav-cta { display: flex; margin-top: 20px; background: var(--grad); color: #fff; border-radius: 8px; justify-content: center; border: none; }
  .header-actions .hide-sm { display: none; }
  .header-actions { margin-left: auto; }
  .nav-mask { position: fixed; inset: 0; background: rgba(5, 10, 20, .45); z-index: 110; opacity: 0; visibility: hidden; transition: .3s; }
  .nav-open .nav-mask { opacity: 1; visibility: visible; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .news-row { grid-template-columns: 1fr; }
  .nr-body { padding: 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid rgba(255, 255, 255, .07); }
  .stat:nth-child(2n) { border-right: none; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .container { padding: 0 18px; }
  .section { padding: 52px 0; }
  .product-grid, .case-grid, .news-grid, .solution-grid, .cert-grid { grid-template-columns: 1fr; }
  .gallery-grid, .app-grid, .split-gallery { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: 1fr; }
  .products-sidebar { flex-direction: column; }
  .footer-top { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .hero-stats .stat strong { font-size: 24px; }
  .hero-dots { bottom: auto; top: calc(100% - 70px); }
  .pd-thumb { width: 62px; height: 62px; }
  .dl-actions { flex-direction: column; }
  .download-item { flex-wrap: wrap; }
  .form-item { grid-column: span 12; }
  .float-service .fs-text { display: none; }
  .float-service { padding: 13px; bottom: 84px; right: 16px; }
  .back-top { right: 16px; bottom: 24px; }
  .article-layout { gap: 30px; }
}