/* ============================================
   日升五金 · 官网设计系统
   ============================================ */
:root {
  --ink: #0e2b57;
  --ink-2: #123a75;
  --navy: #072f6e;
  --blue: #0b3f8e;
  --blue-2: #1460c4;
  --cyan: #1d9fe5;
  --sky: #8fcdf5;
  --accent: #1d9fe5;
  --bg: #f4f6f9;
  --surface: #ffffff;
  --muted: #5f7082;
  --muted-2: #8896a5;
  --line: #e3e9f0;
  --line-dark: rgba(255, 255, 255, 0.12);
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 6px 20px rgba(11, 63, 142, 0.06);
  --shadow: 0 24px 60px rgba(11, 63, 142, 0.1);
  --container: 1220px;
  --font: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
h1, h2, h3, h4, p, ul, dl, dd { margin: 0; }
ul { padding: 0; list-style: none; }
::selection { background: var(--blue); color: #fff; }

.container { width: min(var(--container), calc(100% - 48px)); margin: 0 auto; }
.pc-only { display: inline; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s, color 0.25s, border-color 0.25s, box-shadow 0.25s;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; flex: none; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(120deg, var(--blue-2), var(--blue)); color: #fff; box-shadow: 0 10px 26px rgba(29, 159, 229, 0.28); }
.btn-primary:hover { box-shadow: 0 14px 32px rgba(29, 159, 229, 0.38); }
.btn-white { background: #fff; color: var(--blue); box-shadow: 0 10px 26px rgba(0, 0, 0, 0.16); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: var(--blue); }
.btn-outline { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }
.btn-ghost { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.24); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.14); border-color: rgba(255, 255, 255, 0.5); }
.btn-sm { padding: 11px 20px; font-size: 14px; }
.btn-block { width: 100%; }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
}
.text-link svg { width: 16px; height: 16px; transition: transform 0.25s; }
.text-link:hover svg { transform: translateX(4px); }

/* ---------- top bar ---------- */
.topbar {
  background: #05224e;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12.5px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
.topbar-inner { display: flex; align-items: center; justify-content: space-between; min-height: 40px; }
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 24px; }
.topbar-item { display: inline-flex; align-items: center; gap: 7px; transition: color 0.2s; }
.topbar-item:hover { color: #fff; }
.topbar-item svg { width: 14px; height: 14px; opacity: 0.8; }
.topbar-slogan { color: rgba(255, 255, 255, 0.4); letter-spacing: 0.06em; }
.topbar-slogan::after { content: ""; display: inline-block; width: 1px; height: 12px; background: rgba(255, 255, 255, 0.18); margin-left: 24px; vertical-align: -1px; }

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s;
}
.site-header.is-scrolled { box-shadow: 0 10px 30px rgba(11, 63, 142, 0.09); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 84px; gap: 20px; }

.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand-mark {
  width: 46px; height: 46px; border-radius: 12px;
  background: linear-gradient(140deg, var(--blue-2), var(--blue) 55%, #083677);
  color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center;
  box-shadow: 0 8px 18px rgba(11, 63, 142, 0.32);
  position: relative; overflow: hidden;
}
.brand-mark::after { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(255,255,255,.28), transparent 45%); }
.brand-mark b { font-size: 15px; letter-spacing: 0.08em; line-height: 1.1; font-weight: 700; }
.brand-mark i { font-style: normal; font-size: 8px; letter-spacing: 0.28em; opacity: 0.65; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 15px; font-weight: 700; letter-spacing: 0.01em; white-space: nowrap; }
.brand-text em { font-style: normal; font-size: 9px; letter-spacing: 0.11em; text-transform: uppercase; color: var(--muted-2); white-space: nowrap; }
.brand-logo { height: 46px; width: auto; max-width: 180px; object-fit: contain; display: block; flex: none; }

.main-nav { display: flex; align-items: center; gap: 4px; height: 100%; }
.main-nav > a, .nav-drop > a {
  position: relative;
  display: inline-flex; align-items: center; gap: 4px;
  padding: 10px 8px;
  font-size: 13.5px; font-weight: 500; color: #22384d;
  border-radius: 8px;
  transition: color 0.2s;
  white-space: nowrap;
}
.main-nav > a::after, .nav-drop > a::after {
  content: ""; position: absolute; left: 8px; right: 8px; bottom: 4px; height: 2px;
  background: var(--blue); transform: scaleX(0); transform-origin: left; transition: transform 0.3s var(--ease);
}
.main-nav > a:hover, .nav-drop > a:hover, .main-nav > a.is-active, .nav-drop.is-active > a { color: var(--blue); }
.main-nav > a:hover::after, .nav-drop > a:hover::after,
.main-nav > a.is-active::after, .nav-drop.is-active > a::after { transform: scaleX(1); }
.nav-drop > a svg { width: 13px; height: 13px; opacity: 0.6; }
.nav-drop { position: relative; height: 100%; display: flex; align-items: center; }
.nav-drop-panel {
  position: absolute; top: calc(100% - 8px); left: -12px;
  width: 440px; padding: 14px;
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow);
  display: grid; grid-template-columns: 1fr 1fr; gap: 2px;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: all 0.25s var(--ease);
}
.nav-drop:hover .nav-drop-panel { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-drop-panel a {
  display: block; padding: 9px 12px; border-radius: 8px;
  font-size: 13.5px; color: #33485d; line-height: 1.45;
  transition: background 0.2s, color 0.2s;
}
.nav-drop-panel a:hover { background: #eef5fb; color: var(--blue); }
.nav-drop-panel .nav-drop-all { grid-column: 1 / -1; margin-top: 6px; padding-top: 12px; border-top: 1px solid var(--line); color: var(--blue); font-weight: 600; text-align: right; }

.header-actions { display: flex; align-items: center; gap: 18px; flex: none; }
.header-phone { display: inline-flex; align-items: center; gap: 10px; }
.header-phone-icon {
  width: 38px; height: 38px; border-radius: 50%;
  background: #eaf4fc; color: var(--blue);
  display: flex; align-items: center; justify-content: center;
}
.header-phone-icon svg { width: 18px; height: 18px; }
.header-phone span:last-child { display: flex; flex-direction: column; line-height: 1.2; }
.header-phone em { font-style: normal; font-size: 11px; color: var(--muted-2); }
.header-phone strong { font-size: 16px; font-weight: 700; letter-spacing: 0.02em; color: var(--ink); }
.header-phone:hover strong { color: var(--blue); }

.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; border-radius: 10px; cursor: pointer; padding: 0; align-items: center; justify-content: center; flex-direction: column; gap: 4px; }
.nav-toggle span { width: 18px; height: 2px; background: var(--ink); transition: 0.3s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-overlay { display: none; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 640px at 86% -12%, rgba(110, 204, 255, 0.2), transparent 62%),
    radial-gradient(900px 560px at -6% 108%, rgba(36, 114, 199, 0.32), transparent 66%),
    linear-gradient(118deg, #0a2b57 0%, #0d3a72 52%, #12518f 100%);
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; left: 50%; bottom: -220px; width: 1100px; height: 420px;
  transform: translateX(-50%); pointer-events: none;
  background: radial-gradient(closest-side, rgba(126, 203, 255, 0.14), transparent 72%);
}
.hero-pattern {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.55;
  background-image: radial-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1.4px);
  background-size: 30px 30px;
  mask-image: radial-gradient(ellipse 85% 75% at 50% 16%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 85% 75% at 50% 16%, #000 0%, transparent 78%);
}
.hero::-webkit-scrollbar { display: none; }
.hero-slides { position: relative; z-index: 1; }
.hero-slide {
  position: absolute; inset: 0; visibility: hidden; opacity: 0;
  transition: opacity 0.7s var(--ease), visibility 0.7s;
  pointer-events: none;
}
.hero-slide.is-active { visibility: visible; opacity: 1; position: relative; pointer-events: auto; }
.hero-inner {
  display: grid; grid-template-columns: 1.05fr 0.95fr; align-items: center;
  gap: 64px; padding: 84px 0 106px; min-height: 592px;
}
.hero-content { max-width: 600px; position: relative; z-index: 2; animation: heroIn 0.7s var(--ease) both; }
.hero-slide.is-active .hero-content { animation: heroIn 0.75s var(--ease) both; }
@keyframes heroIn { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: none; } }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 11.5px; letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(214, 235, 253, 0.72);
  margin-bottom: 22px;
}
.hero-eyebrow i { width: 26px; height: 1px; background: var(--sky); display: inline-block; opacity: 0.85; }
.hero-content h1 {
  font-size: clamp(34px, 4.1vw, 52px);
  line-height: 1.22;
  letter-spacing: -0.012em;
  font-weight: 700;
  margin-bottom: 18px;
  text-wrap: balance;
  background: linear-gradient(180deg, #ffffff 28%, #d8ecff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
html[lang="zh-CN"] .hero-content h1 {
  max-width: 7.3em;
  text-wrap: wrap;
}
.hero-content > p {
  font-size: 15.5px; line-height: 1.9;
  color: rgba(226, 241, 255, 0.72);
  max-width: 548px;
  margin-bottom: 34px;
  text-wrap: pretty;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-bottom: 40px; }
.hero .btn-primary {
  background: linear-gradient(120deg, #ffffff, #eaf5ff);
  color: #0b3f8e;
  box-shadow: 0 12px 30px rgba(3, 18, 43, 0.32);
}
.hero .btn-primary:hover { box-shadow: 0 16px 38px rgba(3, 18, 43, 0.42); }
.hero .btn-ghost { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.24); }
.hero .btn-ghost:hover { background: rgba(255, 255, 255, 0.16); border-color: rgba(255, 255, 255, 0.42); }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; }
.hero-points li {
  display: flex; flex-direction: column; gap: 3px;
  padding: 12px 19px; border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.11);
  backdrop-filter: blur(6px);
}
.hero-points b { font-size: 20px; font-weight: 700; letter-spacing: 0.01em; line-height: 1.3; }
.hero-points span { font-size: 11.5px; color: rgba(220, 237, 252, 0.55); letter-spacing: 0.04em; }

.hero-visual { position: relative; }
.hero-visual::before {
  content: ""; position: absolute; inset: -12% -8%; z-index: 0; pointer-events: none;
  background: radial-gradient(closest-side, rgba(74, 168, 236, 0.3), transparent 72%);
  filter: blur(24px);
}
.hero-visual::after {
  content: ""; position: absolute; inset: 18px -18px -18px 18px; z-index: 0; pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.13); border-radius: 30px;
}
.hero-image-frame {
  position: relative; z-index: 1; border-radius: 26px; overflow: hidden;
  aspect-ratio: 4 / 3.4;
  border: 1px solid rgba(255, 255, 255, 0.24);
  box-shadow: 0 34px 70px rgba(2, 14, 32, 0.42), inset 0 1px 0 rgba(255, 255, 255, 0.26);
  background: #0a367d;
}
.hero-image-frame::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(5, 18, 36, 0.04) 42%, rgba(5, 18, 36, 0.46) 100%);
}
.hero-image-frame img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.03); filter: saturate(1.03); }
.hero-image-tag {
  position: absolute; left: 18px; bottom: 18px; z-index: 2;
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; letter-spacing: 0.08em;
  background: rgba(8, 25, 42, 0.5); backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 14px; border-radius: 999px;
}
.hero-image-tag i { width: 6px; height: 6px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 0 3px rgba(74, 222, 128, 0.18); }
.hero-float-card {
  position: absolute; right: -12px; bottom: 38px; z-index: 3;
  background: rgba(255, 255, 255, 0.95); color: var(--ink);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 16px; padding: 15px 20px;
  box-shadow: 0 20px 44px rgba(3, 18, 43, 0.26);
  backdrop-filter: blur(12px);
  display: flex; flex-direction: column; gap: 2px;
  animation: floatCard 5s ease-in-out infinite;
}
@keyframes floatCard { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.hero-float-card span { font-size: 10.5px; letter-spacing: 0.16em; color: var(--muted-2); text-transform: uppercase; }
.hero-float-card strong { font-size: 17px; font-weight: 700; }
.hero-float-card em { font-style: normal; font-size: 11px; color: var(--muted); }

.hero-controls { position: relative; z-index: 3; border-top: 1px solid rgba(255, 255, 255, 0.08); padding-bottom: 34px; }
.hero-controls-inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.hero-dots { display: flex; gap: 14px; }
.hero-dots button {
  display: inline-flex; align-items: center; gap: 8px;
  background: none; border: 0; padding: 6px 0; cursor: pointer;
  color: rgba(255, 255, 255, 0.4); font-size: 11px; letter-spacing: 0.1em;
  transition: color 0.3s;
}
.hero-dots button span { width: 30px; height: 2px; border-radius: 2px; background: rgba(255, 255, 255, 0.18); position: relative; overflow: hidden; }
.hero-dots button span::after { content: ""; position: absolute; inset: 0; background: var(--sky); transform: scaleX(0); transform-origin: left; transition: transform 0.4s; }
.hero-dots button.is-active { color: #fff; }
.hero-dots button.is-active span::after { transform: scaleX(1); }
.hero-dots em { font-style: normal; }
.hero-scroll { font-size: 10.5px; letter-spacing: 0.22em; color: rgba(255, 255, 255, 0.32); }

/* ---------- stats ---------- */
.stats-strip { position: relative; z-index: 5; margin-top: -34px; }
.stats-grid {
  background: #fff; border-radius: 18px; box-shadow: var(--shadow);
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding: 6px; overflow: hidden;
}
.stat-item { padding: 28px 30px; position: relative; }
.stat-item + .stat-item::before { content: ""; position: absolute; left: 0; top: 26%; bottom: 26%; width: 1px; background: var(--line); }
.stat-item strong { display: block; font-size: 36px; line-height: 1.1; font-weight: 700; color: var(--navy); letter-spacing: -0.02em; }
.stat-item strong i { font-style: normal; font-size: 15px; margin-left: 2px; color: var(--blue); font-weight: 600; }
.stat-item > span { display: block; margin-top: 6px; font-size: 13.5px; font-weight: 600; color: #253a4d; }
.stat-item > em { display: block; margin-top: 4px; font-style: normal; font-size: 12px; color: var(--muted-2); }

/* ---------- sections ---------- */
.section { padding: 96px 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 48px; margin-bottom: 48px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--muted-2); margin-bottom: 16px;
}
.eyebrow b { color: var(--blue); font-weight: 700; }
.eyebrow-light { color: rgba(255, 255, 255, 0.5); }
.eyebrow-light b { color: var(--sky); }
.section-head h2 {
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.3; font-weight: 700; letter-spacing: -0.01em;
  text-wrap: balance;
}
.section-head-side { max-width: 340px; flex: none; text-align: right; }
.section-head-side p { font-size: 13.5px; color: var(--muted); line-height: 1.9; margin-bottom: 12px; }
.section-head-side .text-link { margin-top: 4px; }
.section-head-light h2 { color: #fff; }
.section-head-light .section-head-side p { color: rgba(255, 255, 255, 0.55); }

/* ---------- categories ---------- */
.product-range { padding-bottom: 40px; }
.category-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 14px; }
.category-card {
  position: relative; display: block;
  border-radius: 14px; overflow: hidden; background: #e8eef4;
  aspect-ratio: 1 / 1.24;
  transition: transform 0.35s var(--ease), box-shadow 0.35s;
}
.category-card:hover { transform: translateY(-5px); box-shadow: 0 22px 44px rgba(11, 63, 142, 0.18); }
.category-media { position: absolute; inset: 0; }
.category-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.category-card:hover .category-media img { transform: scale(1.06); }
.category-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6, 20, 35, 0) 32%, rgba(6, 20, 35, 0.86) 100%); }
.category-info { position: absolute; left: 14px; right: 14px; bottom: 14px; z-index: 2; color: #fff; }
.category-info strong { display: block; font-size: 13.5px; font-weight: 600; line-height: 1.45; }
.category-info em { display: block; margin-top: 3px; font-style: normal; font-size: 11px; color: rgba(255, 255, 255, 0.58); }
.category-arrow {
  position: absolute; top: 12px; right: 12px; z-index: 2;
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.16); backdrop-filter: blur(8px);
  color: #fff; display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(-4px); transition: 0.3s;
}
.category-arrow svg { width: 14px; height: 14px; }
.category-card:hover .category-arrow { opacity: 1; transform: none; }

/* ---------- products ---------- */
.featured { padding-top: 64px; }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform 0.35s var(--ease), box-shadow 0.35s, border-color 0.35s;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 26px 50px rgba(11, 63, 142, 0.12); border-color: #cfe0ee; }
.product-media {
  position: relative; display: block; aspect-ratio: 4 / 3.2;
  background: linear-gradient(160deg, #f2f6fa, #e9eff5);
  overflow: hidden;
}
.product-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.product-card:hover .product-media img { transform: scale(1.05); }
.product-badge {
  position: absolute; left: 12px; top: 12px;
  background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(8px);
  color: var(--navy); font-size: 10.5px; font-weight: 600; letter-spacing: 0.06em;
  padding: 5px 10px; border-radius: 6px;
}
.product-body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.product-cat { font-size: 10.5px; letter-spacing: 0.12em; color: var(--blue); font-weight: 600; text-transform: uppercase; }
.product-body h3 { margin-top: 8px; font-size: 15.5px; line-height: 1.45; font-weight: 600; }
.product-body h3 a:hover { color: var(--blue); }
.product-body p {
  margin-top: 8px; font-size: 12.5px; color: var(--muted); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.product-link {
  margin-top: auto; padding-top: 18px;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 600; color: var(--muted-2);
  transition: color 0.25s;
}
.product-link svg { width: 15px; height: 15px; transition: transform 0.25s; }
.product-card:hover .product-link { color: var(--blue); }
.product-card:hover .product-link svg { transform: translateX(4px); }
.media-fallback { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; background: repeating-linear-gradient(45deg, #eef3f8, #eef3f8 12px, #e6edf4 12px, #e6edf4 24px); }
.media-fallback i { font-style: normal; font-size: 24px; letter-spacing: 0.2em; color: #b6c5d3; font-weight: 700; }

/* ---------- why ---------- */
.why { position: relative; background: linear-gradient(155deg, #072a63, #0b3f8e 70%, #1250ad); color: #fff; overflow: hidden; }
.why-pattern {
  position: absolute; inset: 0; opacity: 0.5;
  background-image: radial-gradient(circle at 20% 20%, rgba(31, 169, 221, 0.18), transparent 42%),
                    radial-gradient(circle at 88% 75%, rgba(29, 159, 229, 0.16), transparent 45%);
}
.why .container { position: relative; z-index: 2; }
.why-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  grid-template-areas: "visual head" "visual list";
  gap: 0 72px;
  align-items: start;
}
.why-visual { grid-area: visual; align-self: center; position: relative; width: 100%; max-width: 540px; }
.why-visual::before {
  content: ""; position: absolute; inset: -30px -22px; z-index: -1;
  background: radial-gradient(circle at 40% 35%, rgba(29, 159, 229, 0.38), transparent 62%);
  filter: blur(38px);
}
.why-photo {
  position: relative; padding: 12px; border-radius: 24px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.04));
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 34px 70px rgba(1, 12, 34, 0.45);
}
.why-photo img { width: 100%; height: auto; border-radius: 15px; background: #fff; }
.why-badge {
  position: absolute; left: 28px; bottom: -22px;
  display: flex; align-items: center; gap: 14px;
  padding: 14px 20px; border-radius: 14px; background: #fff;
  box-shadow: 0 18px 40px rgba(1, 12, 34, 0.3);
}
.why-badge strong { font-size: 24px; line-height: 1; color: var(--blue); letter-spacing: -0.02em; }
.why-badge em { font-style: normal; font-size: 12px; line-height: 1.4; color: var(--muted); max-width: 96px; }
.why-head { grid-area: head; }
.why-head h2 {
  font-size: clamp(28px, 3.1vw, 38px); line-height: 1.28; font-weight: 700;
  letter-spacing: -0.01em; color: #fff; margin-bottom: 14px;
}
.why-lead { font-size: 14px; line-height: 1.9; color: rgba(255, 255, 255, 0.58); max-width: 470px; }
.why-list { grid-area: list; margin-top: 30px; }
.why-item { display: flex; gap: 18px; padding: 15px 0; border-top: 1px solid rgba(255, 255, 255, 0.09); }
.why-item:first-child { border-top: 0; padding-top: 0; }
.why-item:last-child { padding-bottom: 0; }
.why-item-num {
  flex: none; width: 40px; height: 40px; border-radius: 12px;
  display: grid; place-items: center;
  font-size: 13px; font-weight: 700; letter-spacing: 0.02em;
  color: var(--sky); background: rgba(143, 205, 245, 0.1);
  border: 1px solid rgba(143, 205, 245, 0.2);
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.why-item:hover .why-item-num { background: var(--sky); color: var(--blue); border-color: transparent; }
.why-item h3 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 3px; }
.why-item p { font-size: 13px; line-height: 1.8; color: rgba(255, 255, 255, 0.5); }

/* ---------- about preview ---------- */
.about-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 72px; align-items: center; }
.about-media { position: relative; }
.about-media-main { border-radius: 20px; overflow: hidden; aspect-ratio: 4 / 3.4; box-shadow: var(--shadow); }
.about-media-main img { width: 100%; height: 100%; object-fit: cover; }
.about-media-sub {
  position: absolute; right: -20px; bottom: -28px;
  background: #fff; border-radius: 16px; padding: 22px 24px;
  box-shadow: var(--shadow); display: flex; align-items: center; gap: 16px;
}
.about-media-badge { display: flex; flex-direction: column; }
.about-media-badge b { font-size: 30px; line-height: 1; color: var(--blue); font-weight: 700; letter-spacing: -0.02em; }
.about-media-badge em { font-style: normal; font-size: 11px; color: var(--muted-2); margin-top: 4px; }
.about-media-line { width: 1px; height: 34px; background: var(--line); }
.about-media-caption { font-size: 12.5px; line-height: 1.6; color: #2c4359; font-weight: 600; }
.about-copy h2 { font-size: clamp(28px, 3vw, 38px); line-height: 1.32; font-weight: 700; margin-bottom: 20px; }
.about-copy > p { font-size: 14px; color: var(--muted); line-height: 1.95; margin-bottom: 24px; }
.check-list { display: grid; gap: 10px; margin-bottom: 32px; }
.check-list li { position: relative; padding-left: 26px; font-size: 13.5px; color: #31465a; line-height: 1.7; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #e8f3fc url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231d9fe5' stroke-width='3.4'%3E%3Cpath d='m5 12 4 4L19 6'/%3E%3C/svg%3E") center/9px no-repeat;
}
.about-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; }
.about-phone { display: inline-flex; align-items: center; gap: 10px; }
.about-phone svg { width: 34px; height: 34px; padding: 8px; border-radius: 50%; background: #eaf4fc; color: var(--blue); }
.about-phone span { display: flex; flex-direction: column; line-height: 1.3; }
.about-phone em { font-style: normal; font-size: 11px; color: var(--muted-2); }
.about-phone b { font-size: 17px; color: var(--navy); }

/* ---------- news ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.35s var(--ease), box-shadow 0.35s; }
.news-card:hover { transform: translateY(-5px); box-shadow: 0 24px 46px rgba(11, 63, 142, 0.1); }
.news-media { position: relative; display: block; aspect-ratio: 16 / 9.6; overflow: hidden; background: #e9eff5; }
.news-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.news-card:hover .news-media img { transform: scale(1.05); }
.news-date {
  position: absolute; left: 14px; bottom: 14px;
  background: rgba(255, 255, 255, 0.94); border-radius: 10px;
  padding: 8px 12px; display: flex; flex-direction: column; line-height: 1.1;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}
.news-date b { font-size: 18px; font-weight: 700; color: var(--navy); }
.news-date em { font-style: normal; font-size: 10px; color: var(--muted-2); margin-top: 3px; }
.news-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-body strong { font-size: 16px; line-height: 1.55; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body p { margin-top: 10px; font-size: 12.5px; color: var(--muted); line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-more { margin-top: auto; padding-top: 18px; display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; color: var(--blue); }
.news-more svg { width: 14px; height: 14px; transition: transform 0.25s; }
.news-card:hover .news-more svg { transform: translateX(4px); }

/* ---------- cta ---------- */
.cta-band {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(115deg, #0b3f8e, #1460c4 55%, #1d9fe5);
}
.cta-pattern {
  position: absolute; inset: 0; opacity: 0.5;
  background-image: radial-gradient(circle at 82% 20%, rgba(122, 212, 242, 0.3), transparent 42%),
                    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: auto, 60px 60px, 60px 60px;
  mask-image: linear-gradient(90deg, transparent, #000 60%);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 60%);
}
.cta-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 48px; padding: 68px 0; }
.cta-inner h2 { font-size: clamp(26px, 3vw, 36px); line-height: 1.35; font-weight: 700; margin-bottom: 10px; }
.cta-inner p { font-size: 13.5px; color: rgba(255, 255, 255, 0.66); }
.cta-actions { display: flex; align-items: center; gap: 28px; flex: none; }
.cta-phone { display: flex; flex-direction: column; }
.cta-phone em { font-style: normal; font-size: 11px; letter-spacing: 0.14em; color: rgba(255, 255, 255, 0.55); }
.cta-phone strong { font-size: 26px; font-weight: 700; letter-spacing: 0.01em; }
.cta-inline { background: linear-gradient(115deg, #0b3f8e, #1460c4 60%, #1d9fe5); color: #fff; position: relative; overflow: hidden; }
.cta-inline::after { content: ""; position: absolute; right: 6%; top: -60%; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(122, 212, 242, 0.25), transparent 62%); }
.cta-inline-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 46px 0; }
.cta-inline span { font-size: 12px; letter-spacing: 0.16em; color: rgba(255, 255, 255, 0.6); }
.cta-inline h2 { font-size: clamp(22px, 2.4vw, 30px); margin-top: 6px; font-weight: 700; }
.cta-inline-actions { display: flex; align-items: center; gap: 26px; flex: none; }

/* ---------- footer ---------- */
.site-footer { background: #05224e; color: rgba(255, 255, 255, 0.55); }
.footer-main { padding: 66px 0 48px; }
.footer-grid { display: grid; grid-template-columns: 1.55fr 1fr 0.85fr 1.15fr; gap: 48px; }
.brand-light .brand-text strong { color: #fff; }
.brand-light .brand-text em { color: rgba(255, 255, 255, 0.4); }
.footer-brand p { margin-top: 20px; font-size: 12.5px; line-height: 1.9; color: rgba(255, 255, 255, 0.42); max-width: 340px; }
.footer-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.footer-tags span { font-size: 10.5px; padding: 4px 10px; border: 1px solid rgba(255, 255, 255, 0.14); border-radius: 999px; color: rgba(255, 255, 255, 0.5); }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 20px; letter-spacing: 0.03em; }
.footer-col ul { display: grid; gap: 11px; }
.footer-col ul a { font-size: 12.5px; color: rgba(255, 255, 255, 0.5); transition: color 0.2s; }
.footer-col ul a:hover { color: var(--sky); }
.footer-contact p { display: grid; gap: 2px; margin-bottom: 13px; font-size: 12.5px; line-height: 1.6; }
.footer-contact p span { font-size: 10.5px; color: rgba(255, 255, 255, 0.32); letter-spacing: 0.06em; }
.footer-contact p a:hover { color: var(--sky); }
.footer-phone { font-size: 20px; font-weight: 700; color: #fff !important; letter-spacing: 0.01em; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); font-size: 11.5px; color: rgba(255, 255, 255, 0.34); }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 0; }
.footer-bottom em { font-style: normal; opacity: 0.7; }

/* ---------- side rail / mobile bar ---------- */
.side-rail {
  position: fixed; right: 18px; top: 50%; transform: translateY(-50%);
  z-index: 80; display: flex; flex-direction: column; gap: 8px;
}
.side-rail-item {
  width: 52px; height: 52px; border-radius: 13px;
  background: #fff; border: 1px solid var(--line);
  color: #35506a; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  font-size: 10px; cursor: pointer;
  box-shadow: 0 8px 22px rgba(11, 63, 142, 0.08);
  transition: 0.25s;
}
.side-rail-item svg { width: 19px; height: 19px; }
.side-rail-item:hover { background: var(--blue); border-color: var(--blue); color: #fff; transform: translateX(-3px); }
.wechat-pop {
  position: fixed; right: 84px; top: 50%; transform: translateY(-50%) translateX(8px);
  z-index: 85; width: 250px; padding: 20px;
  background: #fff; border-radius: 14px; box-shadow: var(--shadow);
  border: 1px solid var(--line);
  opacity: 0; visibility: hidden; transition: 0.25s;
}
.wechat-pop.is-open { opacity: 1; visibility: visible; transform: translateY(-50%); }
.wechat-pop strong { font-size: 13.5px; display: block; margin-bottom: 12px; }
.wechat-id { background: #f1f6fb; border-radius: 10px; padding: 12px 14px; display: flex; flex-direction: column; gap: 2px; margin-bottom: 12px; }
.wechat-id span { font-size: 10.5px; color: var(--muted-2); }
.wechat-id b { font-size: 17px; letter-spacing: 0.06em; color: var(--blue); }
.wechat-pop p { font-size: 11.5px; color: var(--muted); line-height: 1.6; }
.wechat-pop p a { color: var(--blue); font-weight: 600; }
.mobile-bar { display: none; }

/* ---------- page hero ---------- */
.page-hero {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(145deg, #072a63, #0a2440 60%, #0c3052);
}
.page-hero-pattern {
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 78% 15%, rgba(31, 169, 221, 0.25), transparent 45%),
                    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: auto, 70px 70px, 70px 70px;
  mask-image: linear-gradient(90deg, transparent 10%, #000 55%);
  -webkit-mask-image: linear-gradient(90deg, transparent 10%, #000 55%);
}
.page-hero-inner { position: relative; z-index: 2; display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; padding: 64px 0 56px; }
.page-hero h1 { font-size: clamp(28px, 3.4vw, 42px); line-height: 1.3; font-weight: 700; max-width: 780px; text-wrap: balance; }
.page-hero p { margin-top: 14px; font-size: 13.5px; color: rgba(255, 255, 255, 0.6); max-width: 640px; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 11.5px; color: rgba(255, 255, 255, 0.4); flex: none; padding-bottom: 6px; }
.breadcrumb a:hover { color: var(--sky); }
.breadcrumb em { font-style: normal; color: rgba(255, 255, 255, 0.72); max-width: 220px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- products page ---------- */
.products-page { padding-top: 64px; }
.products-layout { display: grid; grid-template-columns: 268px 1fr; gap: 40px; align-items: start; }
.products-side { display: flex; flex-direction: column; gap: 20px; position: sticky; top: 104px; }
.side-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 26px 24px; }
.side-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 16px; }
.side-cats { display: grid; gap: 2px; }
.side-cats a { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 9px 12px; border-radius: 8px; font-size: 12.5px; color: #40566c; transition: 0.2s; }
.side-cats a em { font-style: normal; font-size: 10.5px; color: var(--muted-2); }
.side-cats a:hover { background: #f0f6fb; color: var(--blue); }
.side-cats a.is-active { background: var(--blue); color: #fff; font-weight: 600; }
.side-cats a.is-active em { color: rgba(255, 255, 255, 0.7); }
.side-contact { background: linear-gradient(150deg, #0a367d, #1460c4); border-color: transparent; color: #fff; }
.side-contact-eyebrow { font-size: 9.5px; letter-spacing: 0.2em; color: var(--sky); }
.side-contact h3 { margin: 10px 0 8px; font-size: 18px; }
.side-contact p { font-size: 12px; line-height: 1.8; color: rgba(255, 255, 255, 0.6); margin-bottom: 18px; }
.side-contact .btn { box-shadow: none; background: #fff; color: var(--blue); }
.side-contact-mail { display: block; text-align: center; margin-top: 12px; font-size: 11.5px; color: rgba(255, 255, 255, 0.6); }
.side-contact-mail:hover { color: #fff; }

.products-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.search-box { display: flex; align-items: center; gap: 10px; background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 4px 4px 4px 16px; flex: 1; max-width: 520px; transition: border-color 0.25s; }
.search-box:focus-within { border-color: var(--blue-2); }
.search-box svg { width: 17px; height: 17px; color: var(--muted-2); flex: none; }
.search-box input { flex: 1; border: 0; outline: none; background: none; font-size: 13px; padding: 10px 0; font-family: inherit; color: var(--ink); }
.search-box button { border: 0; background: var(--ink); color: #fff; font-size: 12.5px; padding: 9px 18px; border-radius: 999px; cursor: pointer; transition: background 0.2s; }
.search-box button:hover { background: var(--blue); }
.result-count { font-size: 12.5px; color: var(--muted-2); flex: none; }
.result-count b { color: var(--blue); }
.product-grid-page { grid-template-columns: repeat(3, 1fr); }

.empty-state { background: #fff; border: 1px dashed var(--line); border-radius: var(--radius); padding: 70px 30px; text-align: center; }
.empty-state span { font-size: 10px; letter-spacing: 0.24em; color: var(--muted-2); }
.empty-state h3 { margin: 12px 0 8px; font-size: 20px; }
.empty-state p { font-size: 13px; color: var(--muted); margin-bottom: 22px; }

/* ---------- product detail ---------- */
.product-detail { padding-top: 64px; padding-bottom: 56px; }
.detail-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: start; }
.detail-media { position: sticky; top: 108px; }
.detail-image { border-radius: 20px; overflow: hidden; background: linear-gradient(160deg, #f2f6fa, #e8eff6); aspect-ratio: 1 / 0.86; box-shadow: var(--shadow-sm); }
.detail-image img { width: 100%; height: 100%; object-fit: cover; }
.detail-thumbs { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.detail-thumb {
  width: 84px; aspect-ratio: 1 / 1; padding: 0; overflow: hidden;
  border: 1px solid var(--line); border-radius: 10px; background: #fff;
  cursor: pointer; opacity: 0.66; transition: opacity 0.2s, border-color 0.2s;
}
.detail-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.detail-thumb:hover { opacity: 1; }
.detail-thumb.is-active { opacity: 1; border-color: var(--blue); box-shadow: 0 0 0 2px rgba(29, 159, 229, 0.14); }
.detail-media-note { margin-top: 14px; font-size: 11.5px; color: var(--muted-2); display: flex; align-items: center; gap: 8px; }
.detail-media-note b { color: var(--blue); font-weight: 600; }
.detail-info h1 { font-size: clamp(26px, 3vw, 36px); line-height: 1.35; font-weight: 700; margin: 10px 0 14px; }
.detail-summary { font-size: 14px; color: var(--muted); line-height: 1.9; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.detail-specs { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 26px 0; }
.detail-specs > div { background: #fff; padding: 14px 18px; }
.detail-specs dt { font-size: 10.5px; color: var(--muted-2); letter-spacing: 0.06em; }
.detail-specs dd { font-size: 13.5px; font-weight: 600; color: #22384d; margin-top: 2px; }
.detail-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.detail-trust { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }
.detail-trust span { display: inline-flex; align-items: center; gap: 7px; font-size: 11.5px; color: var(--muted); }
.detail-trust i { width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); }

.detail-body { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.detail-body-layout { display: grid; grid-template-columns: 1fr 320px; gap: 60px; align-items: start; }
.prose-head { display: flex; align-items: baseline; gap: 14px; padding-bottom: 18px; border-bottom: 1px solid var(--line); margin-bottom: 26px; }
.prose-head h2 { font-size: 24px; font-weight: 700; }
.prose-head span { font-size: 10px; letter-spacing: 0.2em; color: var(--muted-2); }
.prose { font-size: 14px; color: #3c5064; line-height: 2; }
.prose p { margin-bottom: 18px; }
.prose h2, .prose h3 { color: var(--ink); margin: 30px 0 14px; line-height: 1.4; }
.prose h2 { font-size: 22px; }
.prose h3 { font-size: 18px; }
.prose ul, .prose ol { margin: 0 0 20px; padding-left: 20px; list-style: disc; }
.prose li { margin-bottom: 8px; }
.prose img { border-radius: 12px; margin: 20px 0; }
.prose strong { color: var(--ink); }
.prose table { width: 100%; border-collapse: collapse; margin: 6px 0 24px; font-size: 13px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; line-height: 1.7; }
.prose th { width: 34%; background: #f7f9fb; color: var(--ink); font-weight: 600; }
.detail-aside { position: sticky; top: 108px; }
.detail-aside .side-card p { font-size: 12.5px; color: var(--muted); line-height: 1.8; margin-bottom: 18px; }
.aside-contact { display: grid; gap: 10px; margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--line); }
.aside-contact a { display: flex; flex-direction: column; }
.aside-contact span { font-size: 10.5px; color: var(--muted-2); }
.aside-contact b { font-size: 13.5px; color: var(--navy); }
.aside-contact a:hover b { color: var(--blue); }

.related { padding-bottom: 72px; }
.inquiry-section { background: #fff; border-top: 1px solid var(--line); padding: 80px 0; }
.inquiry-layout { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 60px; align-items: start; }
.inquiry-copy h2 { font-size: clamp(24px, 2.6vw, 32px); line-height: 1.4; margin-bottom: 14px; }
.inquiry-copy > p { font-size: 13.5px; color: var(--muted); line-height: 1.9; margin-bottom: 28px; }
.inquiry-contacts { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.inquiry-contacts > a, .inquiry-contacts > div { display: flex; flex-direction: column; gap: 2px; padding: 16px 18px; background: #f5f8fb; border-radius: 12px; }
.inquiry-contacts span { font-size: 10.5px; color: var(--muted-2); }
.inquiry-contacts b { font-size: 13.5px; color: var(--navy); line-height: 1.5; }
.inquiry-card { background: #f5f8fb; border-radius: 18px; padding: 32px; }

/* ---------- forms ---------- */
.inquiry-form .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field-full { grid-column: 1 / -1; }
.field > span { font-size: 12px; font-weight: 500; color: #3b5064; }
.field > span i { font-style: normal; color: #e5484d; }
.field input, .field select, .field textarea {
  width: 100%; border: 1px solid var(--line); border-radius: 10px;
  background: #fff; padding: 12px 14px; font-size: 13px; font-family: inherit; color: var(--ink);
  outline: none; transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { resize: vertical; min-height: 104px; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue-2); box-shadow: 0 0 0 4px rgba(29, 159, 229, 0.08); }
.field input::placeholder, .field textarea::placeholder { color: #a9b6c2; }
.form-foot { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; margin-top: 22px; }
.form-note { font-size: 11px; color: var(--muted-2); line-height: 1.6; }
.form-feedback { margin-top: 14px; font-size: 12.5px; min-height: 20px; }
.form-feedback.is-error { color: #d33; }
.form-feedback.is-success { color: #168a4b; }
.alert-success { background: #eaf8f0; border: 1px solid #bfe8d0; color: #146c3c; padding: 14px 16px; border-radius: 10px; font-size: 13px; margin-bottom: 20px; }

/* ---------- news page ---------- */
.news-page { padding-top: 64px; }
.news-filter { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; max-width: 980px; margin: 0 auto 28px; }
.news-filter-label { font-size: 11px; letter-spacing: 0.12em; color: var(--muted-2); text-transform: uppercase; margin-right: 4px; }
.news-filter .chip { gap: 6px; }
.news-filter .chip i { font-style: normal; font-size: 11px; opacity: 0.55; }
.news-filter .chip.is-active { border-color: var(--blue); color: #fff; background: var(--blue); }
.news-filter .chip.is-active i { opacity: 0.8; }
.news-list { display: grid; gap: 20px; max-width: 980px; margin: 0 auto; }
.news-row { display: grid; grid-template-columns: 300px 1fr; gap: 28px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.3s var(--ease), box-shadow 0.3s; }
.news-row:hover { transform: translateY(-4px); box-shadow: 0 22px 44px rgba(11, 63, 142, 0.09); }
.news-row-media { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: #e9eff5; }
.news-row-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.news-row:hover .news-row-media img { transform: scale(1.05); }
.news-row-date { position: absolute; left: 14px; bottom: 14px; display: flex; flex-direction: column; background: rgba(255, 255, 255, 0.94); border-radius: 10px; padding: 7px 12px; line-height: 1.1; }
.news-row-date b { font-size: 17px; color: var(--navy); }
.news-row-date em { font-style: normal; font-size: 9.5px; color: var(--muted-2); margin-top: 2px; }
.news-row-body { padding: 24px 26px 22px 0; display: flex; flex-direction: column; }
.news-row-meta { font-size: 10.5px; letter-spacing: 0.08em; color: var(--muted-2); margin-bottom: 8px; }
.news-row-body strong { font-size: 17px; line-height: 1.5; font-weight: 600; }
.news-row-body p { margin-top: 9px; font-size: 12.5px; color: var(--muted); line-height: 1.8; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- article ---------- */
.article-page { padding-top: 64px; }
.article-cat { display: inline-flex; align-items: center; margin-bottom: 20px; padding: 6px 14px; border-radius: 999px; background: #eef5fd; color: var(--blue); font-size: 11.5px; letter-spacing: 0.06em; }
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 60px; align-items: start; }
.article-body { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 44px; }
.article-cover { width: 100%; height: auto; border-radius: 12px; margin-bottom: 26px; display: block; }
.article-body p:first-of-type { font-size: 15px; color: #2c4359; }
.article-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 28px; }
.article-gallery a { display: block; aspect-ratio: 4 / 3; border-radius: 12px; overflow: hidden; background: #eef3f8; }
.article-gallery img { width: 100%; height: 100%; object-fit: cover; margin: 0; transition: transform 0.5s var(--ease); }
.article-gallery a:hover img { transform: scale(1.05); }
.article-foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); }
.article-aside { position: sticky; top: 108px; display: flex; flex-direction: column; gap: 20px; }
.aside-news { display: grid; gap: 4px; }
.aside-news a { display: block; padding: 10px 0; border-bottom: 1px solid #f0f4f8; }
.aside-news a span { display: block; font-size: 10.5px; color: var(--muted-2); }
.aside-news a strong { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-size: 12.5px; font-weight: 500; line-height: 1.65; color: #33485d; margin-top: 3px; }
.aside-news a:hover strong { color: var(--blue); }
.aside-news li:last-child a { border-bottom: 0; }

/* ---------- about page ---------- */
.about-page { padding-top: 64px; }
.about-intro-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: start; }
.about-copy h2 { font-size: clamp(26px, 3vw, 36px); line-height: 1.4; margin-bottom: 22px; font-weight: 700; }
.about-copy > p { font-size: 14px; color: var(--muted); line-height: 2; margin-bottom: 16px; }
.about-intro-media { display: flex; flex-direction: column; gap: 14px; }
.about-intro-main { border-radius: 18px; overflow: hidden; aspect-ratio: 4 / 3; background: #e9eff5; }
.about-intro-main img { width: 100%; height: 100%; object-fit: cover; }
.about-intro-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.about-intro-row img { border-radius: 14px; aspect-ratio: 4 / 3; object-fit: cover; background: #e9eff5; }

.values-band { background: linear-gradient(150deg, #072a63, #0b3f8e 70%, #1250ad); color: #fff; }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.value-card { padding: 30px 26px; border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 16px; background: rgba(255, 255, 255, 0.035); }
.value-card span { font-size: 11px; letter-spacing: 0.16em; color: var(--sky); }
.value-card h3 { font-size: 20px; margin: 14px 0 10px; font-weight: 600; }
.value-card p { font-size: 12.5px; line-height: 1.9; color: rgba(255, 255, 255, 0.55); }

.capability-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 70px; align-items: center; }
.capability-copy h2 { font-size: clamp(26px, 3vw, 34px); margin-bottom: 16px; }
.capability-copy > p { font-size: 13.5px; color: var(--muted); line-height: 1.9; margin-bottom: 28px; }
.capability-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.capability-list li { display: grid; grid-template-columns: 110px 1fr; gap: 18px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.capability-list span { font-size: 12px; color: var(--muted-2); }
.capability-list b { font-size: 13px; font-weight: 500; color: #2c4359; line-height: 1.7; }
.capability-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.capability-stats > div { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 28px 24px; box-shadow: var(--shadow-sm); }
.capability-stats strong { display: block; font-size: 34px; font-weight: 700; color: var(--navy); line-height: 1.1; letter-spacing: -0.02em; }
.capability-stats span { display: block; margin-top: 6px; font-size: 12px; color: var(--muted); }
.about-photo { padding-top: 0; }
.about-photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.about-photo-grid figure { border-radius: 16px; overflow: hidden; background: #fff; border: 1px solid var(--line); }
.about-photo-grid img { aspect-ratio: 4 / 3; width: 100%; object-fit: cover; }
.about-photo-grid figcaption { padding: 14px 18px; font-size: 12px; color: var(--muted); }

/* ---------- contact page ---------- */
.contact-page { padding-top: 64px; }
.contact-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 56px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 26px 24px; transition: transform 0.3s var(--ease), box-shadow 0.3s; }
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.contact-icon { width: 42px; height: 42px; border-radius: 11px; background: #eaf4fc; color: var(--blue); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.contact-icon svg { width: 20px; height: 20px; }
.contact-card > span { font-size: 10.5px; letter-spacing: 0.1em; color: var(--muted-2); }
.contact-card > strong { display: block; font-size: 16px; line-height: 1.5; color: var(--navy); margin: 5px 0 4px; word-break: break-word; }
.contact-card > strong a:hover { color: var(--blue); }
.contact-card > em { display: block; font-style: normal; font-size: 11.5px; color: var(--muted); line-height: 1.6; }
.contact-layout { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 24px; align-items: start; }
.contact-form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 38px 40px; }
.contact-form-head h2 { font-size: 26px; margin-bottom: 8px; }
.contact-form-head p { font-size: 12.5px; color: var(--muted); margin-bottom: 24px; }
.contact-form-head p i { font-style: normal; color: #e5484d; }
.contact-side { display: flex; flex-direction: column; gap: 20px; }
.contact-location { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.contact-location h3 { font-size: 17px; margin: 12px 0 6px; }
.contact-location > p { font-size: 12.5px; color: var(--muted); margin-bottom: 18px; }
.location-map {
  position: relative; height: 190px; border-radius: 12px; overflow: hidden;
  background: #e8eef4;
  background-image: linear-gradient(rgba(11, 63, 142, 0.08) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(11, 63, 142, 0.08) 1px, transparent 1px);
  background-size: 26px 26px;
  margin-bottom: 18px;
}
.location-map::before, .location-map::after { content: ""; position: absolute; background: #fff; opacity: 0.9; }
.location-map::before { width: 100%; height: 22px; top: 46%; transform: rotate(-8deg); }
.location-map::after { width: 18px; height: 100%; left: 58%; }
.location-pin { position: absolute; left: 50%; top: 44%; width: 34px; height: 34px; border-radius: 50%; background: rgba(29, 159, 229, 0.16); display: flex; align-items: center; justify-content: center; }
.location-pin i { width: 14px; height: 14px; border-radius: 50%; background: var(--blue); border: 3px solid #fff; box-shadow: 0 3px 8px rgba(11, 63, 142, 0.4); }
.location-label { position: absolute; left: 50%; top: 62%; transform: translateX(-50%); background: #fff; border: 1px solid var(--line); border-radius: 999px; font-size: 10.5px; padding: 5px 12px; white-space: nowrap; color: var(--navy); box-shadow: var(--shadow-sm); }
.contact-hours { background: linear-gradient(150deg, #0a367d, #1460c4); border-radius: var(--radius); padding: 26px 28px; color: #fff; display: grid; gap: 12px; }
.contact-hours > span { font-size: 10px; letter-spacing: 0.18em; color: var(--sky); margin-bottom: 2px; }
.contact-hours a, .contact-hours > div { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding-bottom: 10px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.contact-hours em { font-style: normal; font-size: 11px; color: rgba(255, 255, 255, 0.5); }
.contact-hours b { font-size: 13px; font-weight: 600; }

/* ---------- enamel wire stripping machine page ---------- */
.machine-page { padding-top: 72px; }
.machine-page .check-list { margin-top: 4px; }
.machine-lineup { background: #f6f9fc; }
.machine-more { display: flex; justify-content: center; margin-top: 34px; }
.chip-list { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  display: inline-flex; align-items: center; padding: 9px 18px;
  border: 1px solid var(--line); border-radius: 999px; background: #fff;
  font-size: 13px; color: #33485d; transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.chip:hover { border-color: var(--blue); color: var(--blue); background: #f2f8fe; }

/* ---------- videos page ---------- */
.videos-page { padding-top: 72px; padding-bottom: 80px; }
.videos-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 26px; }
.videos-count { font-size: 12px; color: var(--muted-2); letter-spacing: 0.04em; }
.video-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.video-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.3s var(--ease), box-shadow 0.3s; }
.video-card:hover { transform: translateY(-4px); box-shadow: 0 22px 44px rgba(11, 63, 142, 0.09); }
.video-cover { position: relative; display: block; width: 100%; padding: 0; border: 0; background: #e9eff5; aspect-ratio: 16 / 10; cursor: pointer; overflow: hidden; }
.video-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.video-card:hover .video-cover img { transform: scale(1.04); }
.video-cover .media-fallback { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.video-play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: #fff; }
.video-play::before {
  content: ""; position: absolute; width: 64px; height: 64px; border-radius: 50%;
  background: rgba(9, 35, 70, 0.62); border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(4px); transition: transform 0.25s, background 0.25s;
}
.video-play svg { position: relative; width: 22px; height: 22px; margin-left: 2px; }
.video-card:hover .video-play::before { transform: scale(1.08); background: rgba(29, 159, 229, 0.86); }
.video-body { padding: 18px 20px 20px; }
.video-body h3 { font-size: 16px; line-height: 1.5; color: var(--navy); }
.video-body p { margin-top: 7px; font-size: 12.5px; color: var(--muted); line-height: 1.75; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.empty-icon { display: flex; align-items: center; justify-content: center; margin-bottom: 4px; }
.empty-icon svg { width: 46px; height: 46px; color: var(--blue); opacity: 0.75; }
.empty-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }
.video-modal[hidden] { display: none; }
.video-modal { position: fixed; inset: 0; z-index: 120; background: rgba(4, 15, 29, 0.82); backdrop-filter: blur(6px); display: flex; align-items: center; justify-content: center; padding: 24px; }
.video-modal-box { position: relative; width: min(1040px, 100%); background: #05111f; border-radius: 16px; overflow: hidden; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5); }
.video-modal-stage { aspect-ratio: 16 / 9; background: #000; }
.video-modal-stage video, .video-modal-stage iframe { width: 100%; height: 100%; display: block; border: 0; background: #000; }
.video-modal-close {
  position: absolute; right: 12px; top: 12px; z-index: 2; width: 40px; height: 40px;
  border-radius: 50%; border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(0, 0, 0, 0.5); color: #fff; font-size: 22px; line-height: 1;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.video-modal-close:hover { background: rgba(29, 159, 229, 0.9); }
body.video-open { overflow: hidden; }

/* ---------- not found ---------- */
.notfound { position: relative; overflow: hidden; background: linear-gradient(145deg, #072a63, #0a2440 60%, #0c3052); color: #fff; padding: 120px 0; }
.notfound-pattern { position: absolute; inset: 0; background: radial-gradient(circle at 70% 30%, rgba(31, 169, 221, 0.22), transparent 45%); }
.notfound-inner { position: relative; z-index: 2; text-align: center; }
.notfound-code { font-size: clamp(72px, 12vw, 140px); font-weight: 700; line-height: 1; color: rgba(255, 255, 255, 0.1); letter-spacing: 0.04em; }
.notfound h1 { font-size: 28px; margin: 10px 0 12px; }
.notfound p { font-size: 13.5px; color: rgba(255, 255, 255, 0.6); max-width: 500px; margin: 0 auto 28px; }
.notfound-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); transition-delay: var(--d, 0s); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-float-card { animation: none; }
  html { scroll-behavior: auto; }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1280px) {
  .header-inner { gap: 20px; }
  .header-phone { display: none; }
}

@media (max-width: 1180px) {
  .header-inner { gap: 18px; }
  .main-nav { gap: 2px; }
  .main-nav > a, .nav-drop > a { padding: 10px 9px; font-size: 13.5px; }
  .header-cta { display: none; }
  .video-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-grid { grid-template-columns: repeat(5, 1fr); }
  .why-layout { gap: 0 48px; }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 0.8fr 1.1fr; gap: 32px; }
}

@media (max-width: 1024px) {
  .topbar-slogan { display: none; }
  .header-phone span:last-child { display: none; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; padding: 64px 0 84px; }
  .hero-content { max-width: 100%; }
  .hero-visual { max-width: 620px; }
  .hero-float-card { right: 0; }
  .why-layout {
    grid-template-columns: 1fr;
    grid-template-areas: "head" "visual" "list";
    gap: 30px;
  }
  .why-visual { max-width: 520px; margin: 0 auto; }
  .why-list { margin-top: 0; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 56px; }
  .about-media { max-width: 560px; }
  .products-layout { grid-template-columns: 230px 1fr; gap: 28px; }
  .detail-grid { grid-template-columns: 1fr; gap: 36px; }
  .detail-media { position: static; max-width: 640px; }
  .detail-body-layout { grid-template-columns: 1fr; gap: 30px; }
  .detail-aside { position: static; }
  .inquiry-layout { grid-template-columns: 1fr; gap: 32px; }
  .about-intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .capability-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; gap: 32px; }
  .article-aside { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-brand p { max-width: 520px; }
}

@media (max-width: 1100px) {
  .brand-text { display: none; }
}

@media (max-width: 960px) {
  .header-phone { display: none; }
  .brand-text em { display: none; }
  .brand-text strong { font-size: 15px; }
  .main-nav > a, .nav-drop > a { padding: 10px 8px; font-size: 13px; }
}

@media (max-width: 860px) {
  .container { width: calc(100% - 36px); }
  .topbar { display: none; }
  .header-inner { height: 68px; }
  .main-nav {
    position: fixed; top: 68px; left: 0; right: 0; bottom: 0;
    background: #fff; flex-direction: column; align-items: stretch; gap: 0;
    padding: 18px 22px 100px; overflow-y: auto;
    transform: translateX(100%); transition: transform 0.35s var(--ease);
    z-index: 95; height: auto; display: flex;
  }
  .main-nav.is-open { transform: none; }
  .main-nav > a, .nav-drop > a { padding: 15px 4px; font-size: 16px; border-bottom: 1px solid var(--line); border-radius: 0; width: 100%; justify-content: space-between; }
  .main-nav > a::after, .nav-drop > a::after { display: none; }
  .nav-drop { flex-direction: column; align-items: stretch; }
  .nav-drop-panel {
    position: static; width: 100%; opacity: 1; visibility: visible; transform: none;
    display: none; grid-template-columns: 1fr 1fr; box-shadow: none; border: 0; padding: 4px 0 12px;
  }
  .nav-drop.is-open .nav-drop-panel { display: grid; }
  .nav-drop-panel .nav-drop-all { grid-column: 1 / -1; border-top: 1px solid var(--line); }
  .header-phone { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-overlay { display: block; position: fixed; inset: 0; background: rgba(6, 17, 30, 0.45); z-index: 92; opacity: 0; visibility: hidden; transition: 0.3s; }
  .nav-overlay.is-open { opacity: 1; visibility: visible; }
  .brand-text strong { font-size: 15px; }
  .brand-text em { font-size: 8px; }
  .brand-mark { width: 42px; height: 42px; }
  .brand-logo { height: 42px; max-width: 140px; }

  .hero-inner { padding: 48px 0 76px; min-height: 0; }
  .hero-content h1 { font-size: 34px; }
  .hero-content > p { font-size: 14px; margin-bottom: 26px; }
  .hero-actions { margin-bottom: 30px; }
  .hero-points { gap: 8px; }
  .hero-points li { padding: 11px 16px; border-radius: 12px; }
  .hero-visual { display: none; }
  .hero-controls { padding-bottom: 24px; }
  .hero-controls-inner { padding: 14px 0; }
  .hero-scroll { display: none; }
  .stats-strip { margin-top: -24px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item { padding: 22px; }
  .stat-item + .stat-item::before { display: none; }
  .stat-item:nth-child(even)::before { content: ""; display: block; left: 0; top: 22%; bottom: 22%; }
  .stat-item strong { font-size: 28px; }
  .stat-item > em { display: none; }

  .section { padding: 64px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 16px; margin-bottom: 30px; }
  .section-head-side { text-align: left; max-width: 100%; }
  .category-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .category-info strong { font-size: 12px; }
  .product-grid, .product-grid-page { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .product-body { padding: 15px 15px 17px; }
  .product-body h3 { font-size: 13.5px; }
  .product-body p { font-size: 11.5px; -webkit-line-clamp: 2; }
  .product-link { padding-top: 13px; }
  .news-grid { grid-template-columns: 1fr; gap: 16px; }
  .video-grid { grid-template-columns: 1fr; gap: 16px; }
  .videos-page { padding-top: 52px; }
  .video-modal { padding: 12px; }
  .values-grid { grid-template-columns: 1fr; gap: 12px; }
  .why-badge { left: 16px; bottom: -18px; gap: 10px; padding: 12px 16px; }
  .why-badge strong { font-size: 20px; }
  .why-item { gap: 14px; padding: 14px 0; }
  .why-item-num { width: 36px; height: 36px; border-radius: 10px; }
  .about-media-sub { right: 0; bottom: -18px; padding: 16px 18px; }
  .about-phone { display: none; }
  .cta-inner { flex-direction: column; align-items: flex-start; padding: 46px 0; gap: 26px; }
  .cta-inline-inner { flex-direction: column; align-items: flex-start; gap: 22px; padding: 36px 0; }
  .cta-inline-actions { flex-wrap: wrap; gap: 18px; }
  .cta-phone strong { font-size: 22px; }

  .page-hero-inner { flex-direction: column; align-items: flex-start; gap: 18px; padding: 44px 0 36px; }
  .page-hero p { font-size: 12.5px; }
  .breadcrumb { padding-bottom: 0; }

  .products-layout { grid-template-columns: 1fr; }
  .products-side { position: static; }
  .side-card { padding: 20px; }
  .side-cats { grid-template-columns: 1fr 1fr; }
  .products-toolbar { flex-direction: column; align-items: stretch; gap: 12px; }
  .search-box { max-width: none; }
  .result-count { text-align: right; }

  .detail-info h1 { font-size: 24px; }
  .detail-specs { grid-template-columns: 1fr; }
  .inquiry-card { padding: 20px; }
  .inquiry-form .form-grid { grid-template-columns: 1fr; }
  .inquiry-contacts { grid-template-columns: 1fr; }

  .news-row { grid-template-columns: 1fr; gap: 0; }
  .news-row-media { aspect-ratio: 16 / 9; }
  .news-row-body { padding: 18px 20px 20px; }
  .news-row-body strong { font-size: 15px; }

  .article-body { padding: 24px 20px; }
  .article-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-foot { flex-direction: column; align-items: flex-start; }

  .contact-cards { grid-template-columns: 1fr 1fr; gap: 12px; }
  .contact-card { padding: 20px 18px; }
  .contact-form-card { padding: 24px 20px; }
  .about-photo-grid { grid-template-columns: 1fr; }
  .capability-list li { grid-template-columns: 90px 1fr; }
  .capability-stats > div { padding: 22px 20px; }

  .side-rail { display: none; }
  .wechat-pop { display: none; }
  .mobile-bar {
    display: grid; grid-template-columns: 1fr 1fr;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 88;
    background: #fff; border-top: 1px solid var(--line);
    box-shadow: 0 -8px 24px rgba(11, 63, 142, 0.08);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .mobile-bar a { display: flex; align-items: center; justify-content: center; gap: 8px; height: 56px; font-size: 14px; font-weight: 600; color: var(--ink); }
  .mobile-bar svg { width: 18px; height: 18px; }
  .mobile-bar-primary { background: linear-gradient(120deg, var(--blue-2), var(--blue)); color: #fff !important; }
  body { padding-bottom: 56px; }
  .site-footer { padding-bottom: 0; }
  .footer-bottom { margin-bottom: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-main { padding: 44px 0 32px; }
  .footer-bottom-inner { flex-direction: column; align-items: flex-start; gap: 6px; padding: 16px 0; }
}

@media (max-width: 560px) {
  .container { width: calc(100% - 28px); }
  .hero-content h1 { font-size: 30px; }
  .hero-eyebrow { font-size: 9.5px; letter-spacing: 0.1em; }
  .hero-points b { font-size: 18px; }
  .hero-points span { font-size: 10.5px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .category-card { aspect-ratio: 1 / 1.1; }
  .product-grid, .product-grid-page { grid-template-columns: 1fr 1fr; gap: 10px; }
  .product-media { aspect-ratio: 1 / 0.92; }
  .product-badge { display: none; }
  .product-cat { font-size: 9px; }
  .product-body h3 { font-size: 12.5px; }
  .product-body p { display: none; }
  .contact-cards { grid-template-columns: 1fr; }
  .inquiry-contacts { grid-template-columns: 1fr 1fr; gap: 10px; }
  .inquiry-contacts > a, .inquiry-contacts > div { padding: 12px 14px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand p { font-size: 11.5px; }
  .article-body { padding: 20px 16px; }
  .side-cats { grid-template-columns: 1fr; }
  .about-media-sub { display: none; }
  .stats-grid { border-radius: 14px; }
  .stat-item strong { font-size: 24px; }
  .stat-item > span { font-size: 11.5px; }
  .cta-actions { flex-direction: column; align-items: flex-start; gap: 18px; }
}

/* language switch */
.lang-switch{display:inline-flex;align-items:center;height:32px;padding:0 12px;border:1px solid rgba(0,0,0,.15);border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.05em;color:inherit;text-decoration:none;transition:.2s}
.lang-switch:hover{border-color:currentColor;opacity:.8}
.nav-lang{display:none}
@media(max-width:860px){.nav-lang{display:block}}
.lang-switch{gap:7px}.lang-switch img{width:20px;height:14px;border-radius:2px;display:block;box-shadow:0 0 0 1px rgba(0,0,0,.08)}.nav-lang img{width:18px;height:12px;border-radius:2px;vertical-align:-1px}
.topbar .lang-switch{height:26px;padding:0 10px;border-color:rgba(255,255,255,.3);color:#fff;font-size:11px}.topbar .lang-switch:hover{border-color:#fff;color:#fff}.topbar .lang-switch img{width:18px;height:12px}
.lang-switch-group{display:inline-flex;align-items:center;gap:6px}
.lang-switch-group-mobile{display:none}
@media(max-width:860px){.lang-switch-group-mobile{display:inline-flex}}
.lang-switch.is-active{font-weight:700}
.topbar .lang-switch.is-active{background:rgba(255,255,255,.18);border-color:rgba(255,255,255,.9)}
.site-header .lang-switch.is-active{background:var(--blue);border-color:var(--blue);color:#fff}
.lang-switch.is-active:hover{opacity:1}
html,body{overflow-x:clip}@media(max-width:860px){.site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:#fff}}