/* ==========================================================================
   恩特易 ENTEYI · 品牌视觉系统
   Base: Bootstrap 5.3.8 (MIT)
   Layout reference: Start Bootstrap "Modern Business" (MIT)
   ========================================================================== */

:root {
  --ink: #071724;
  --ink-2: #0b2130;
  --ink-3: #113246;
  --blue: #0065af;
  --blue-2: #0b82d4;
  --blue-3: #e8f2f9;
  --blue-4: #cfe4f3;
  --orange: #ff6b2c;
  --paper: #f3f6f8;
  --paper-2: #e9eef2;
  --line: #d9e2e8;
  --line-dark: rgba(255, 255, 255, 0.12);
  --muted: #647987;
  --muted-2: #8fa2ae;
  --white: #fff;
  --radius: 2px;
  --shadow-sm: 0 2px 10px rgba(7, 23, 36, 0.05);
  --shadow-md: 0 18px 40px rgba(7, 23, 36, 0.1);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Hiragino Sans GB", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --header-h: 76px;
}

* { -webkit-tap-highlight-color: transparent; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--blue); color: #fff; }

img { max-width: 100%; height: auto; }

a { color: var(--blue); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--blue-2); }

h1, h2, h3, h4, h5, h6 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.18;
  color: inherit;
}

p { margin-bottom: 1rem; }

.container { max-width: 1280px; padding-left: 24px; padding-right: 24px; }

/* ---------- Typography helpers ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
  display: inline-block;
}
.eyebrow--light { color: #7fc4ee; }
.eyebrow--orange { color: var(--orange); }

.section { padding: 96px 0; }
.section--tight { padding: 72px 0; }
.section--paper { background: var(--paper); }
.section--dark { background: var(--ink); color: #fff; }
.section--line { border-top: 1px solid var(--line); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 48px;
}
.section-head__main { max-width: 760px; }
.section-title {
  font-size: clamp(30px, 3.4vw, 46px);
  font-weight: 900;
  margin: 0 0 14px;
}
.section-sub { color: var(--muted); font-size: 16px; max-width: 640px; margin: 0; }
.section--dark .section-sub { color: #a9bcc9; }
.section-head__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 6px;
}
.section-head__link:hover { color: var(--blue); border-color: var(--blue); }
.section--dark .section-head__link { color: #fff; border-color: rgba(255,255,255,.4); }

.mono { font-family: var(--mono); }
.text-blue { color: var(--blue) !important; }
.text-orange { color: var(--orange) !important; }
.text-muted-2 { color: var(--muted) !important; }
.bg-paper { background: var(--paper) !important; }

/* ---------- Buttons ---------- */
.btn-ent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 26px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: var(--radius);
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-ent:hover { background: var(--blue); border-color: var(--blue); color: #fff; transform: translateY(-1px); }
.btn-ent svg { width: 18px; height: 18px; }
.btn-ent--blue { background: var(--blue); border-color: var(--blue); }
.btn-ent--blue:hover { background: #005493; border-color: #005493; }
.btn-ent--orange { background: var(--orange); border-color: var(--orange); }
.btn-ent--orange:hover { background: #e85a1c; border-color: #e85a1c; }
.btn-ent--ghost { background: transparent; border-color: rgba(255,255,255,.32); color: #fff; }
.btn-ent--ghost:hover { background: #fff; border-color: #fff; color: var(--ink); }
.btn-ent--line { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ent--line:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn-ent--sm { min-height: 42px; padding: 0 18px; font-size: 13px; }
.btn-ent--block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1030;
  height: var(--header-h);
  background: rgba(7, 23, 36, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: background 0.25s ease, height 0.25s ease;
}
.site-header.is-scrolled { background: rgba(7, 23, 36, 0.97); }
.site-header .container { height: 100%; }
.header-inner { display: flex; align-items: center; height: 100%; gap: 28px; }
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { height: 30px; width: auto; display: block; }
.brand__text { display: none; }

.main-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.main-nav .nav-link {
  position: relative;
  color: rgba(255,255,255,.82);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 14px !important;
  letter-spacing: 0.02em;
}
.main-nav .nav-link:hover,
.main-nav .nav-link.active { color: #fff; }
.main-nav .nav-link.active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--blue-2);
}
.header-actions { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 9px 16px;
  border: 1px solid rgba(255,255,255,.26);
  border-radius: var(--radius);
  transition: all .2s ease;
}
.header-phone:hover { background: #fff; color: var(--ink); border-color: #fff; }
.header-phone svg { width: 15px; height: 15px; }

.navbar-toggler {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid rgba(255,255,255,.24);
  background: transparent;
  border-radius: var(--radius);
  align-items: center;
  justify-content: center;
  padding: 0;
}
.navbar-toggler span { display: block; width: 20px; height: 2px; background: #fff; position: relative; }
.navbar-toggler span::before,
.navbar-toggler span::after { content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: #fff; transition: .2s; }
.navbar-toggler span::before { top: -6px; }
.navbar-toggler span::after { top: 6px; }
.navbar-toggler[aria-expanded="true"] span { background: transparent; }
.navbar-toggler[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.navbar-toggler[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  background: var(--ink);
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 18px 24px 28px;
  z-index: 1029;
  max-height: calc(100vh - var(--header-h));
  overflow-y: auto;
}
.mobile-nav.is-open { display: block; }
.mobile-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(255,255,255,.9);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.mobile-nav a:hover { color: #7fc4ee; }
.mobile-nav .sub { padding-left: 16px; }
.mobile-nav .sub a { font-size: 14px; color: rgba(255,255,255,.66); font-weight: 500; }
.mobile-nav .mobile-phone { margin-top: 20px; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--ink);
  color: #fff;
  padding: calc(var(--header-h) + 64px) 0 64px;
  overflow: hidden;
}
.hero__grid {
  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: 64px 64px;
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0,0,0,.5) 55%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0,0,0,.5) 55%, transparent 100%);
  pointer-events: none;
}
.hero__glow {
  position: absolute;
  width: 52vw; height: 52vw;
  right: -12vw; top: -12vw;
  background: radial-gradient(circle, rgba(0,101,175,.42) 0%, rgba(0,101,175,0) 62%);
  pointer-events: none;
}
.hero__inner { position: relative; z-index: 2; }
.hero-title {
  font-size: clamp(44px, 6.6vw, 92px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin: 0 0 28px;
}
.hero-title span { color: #3fa5e4; }
.hero-title em { font-style: normal; color: var(--orange); }
.hero-sub {
  max-width: 540px;
  color: #b7c9d5;
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 32px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 48px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid rgba(255,255,255,.14);
  padding-top: 22px;
  max-width: 600px;
}
.hero-stat { padding-right: 18px; border-right: 1px solid rgba(255,255,255,.1); }
.hero-stat:last-child { border-right: 0; }
.hero-stat b { display: block; font-family: var(--mono); font-size: 26px; font-weight: 700; color: #fff; line-height: 1.2; }
.hero-stat span { font-size: 12px; color: #8fa6b4; letter-spacing: .06em; }

.hero-stage {
  position: relative;
  background: linear-gradient(160deg, #ffffff 0%, #eef4f8 60%, #e2ebf1 100%);
  border: 1px solid rgba(255,255,255,.18);
  padding: 18px;
  box-shadow: 0 40px 80px rgba(0,0,0,.35);
}
.hero-stage::before,
.hero-stage::after {
  content: "";
  position: absolute;
  width: 18px; height: 18px;
  border-color: var(--blue-2);
  border-style: solid;
}
.hero-stage::before { top: -1px; left: -1px; border-width: 2px 0 0 2px; }
.hero-stage::after { bottom: -1px; right: -1px; border-width: 0 2px 2px 0; }
.hero-stage__img { display: block; width: 100%; aspect-ratio: 4/3; object-fit: contain; background: #fff; }
.hero-stage__bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid #cddbe4;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: #557080;
  text-transform: uppercase;
}
.hero-stage__tag {
  position: absolute;
  top: 30px; right: 30px;
  background: var(--ink);
  color: #fff;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  padding: 5px 9px;
}
.hero-stage__label {
  position: absolute;
  left: 34px; bottom: 74px;
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(7,23,36,.9);
  color: #fff;
  font-size: 12px;
  padding: 7px 12px;
  letter-spacing: .04em;
}
.hero-stage__label::before { content: ""; width: 6px; height: 6px; background: var(--orange); display: inline-block; }

/* ---------- Industry marquee ---------- */
.industry-strip {
  background: var(--ink-2);
  border-top: 1px solid rgba(255,255,255,.08);
  border-bottom: 1px solid rgba(255,255,255,.08);
  color: #fff;
}
.industry-strip__inner {
  display: flex; align-items: center; gap: 0;
  overflow: hidden;
}
.industry-strip__label {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: #7f97a6;
  padding: 15px 24px 15px 0;
  border-right: 1px solid rgba(255,255,255,.1);
  margin-right: 24px;
  white-space: nowrap;
}
.industry-strip__list {
  display: flex; align-items: center; gap: 32px;
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
}
.industry-strip__list::-webkit-scrollbar { display: none; }
.industry-strip__list span {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: #c3d2dc; letter-spacing: .04em;
  padding: 15px 0;
}
.industry-strip__list span::before { content: ""; width: 5px; height: 5px; background: var(--blue-2); }

/* ---------- Category cards ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
}
.cat-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  overflow: hidden;
}
.cat-card:hover { transform: translateY(-5px); border-color: var(--blue-4); box-shadow: var(--shadow-md); }
.cat-card__img {
  position: relative;
  aspect-ratio: 4/3;
  background: #fff;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.cat-card__img img {
  width: 100%; height: 100%; object-fit: contain; padding: 12px;
  transition: transform .4s ease;
}
.cat-card:hover .cat-card__img img { transform: scale(1.04); }
.cat-card__num {
  position: absolute; top: 10px; left: 10px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .1em;
  color: var(--blue); background: rgba(255,255,255,.94);
  padding: 3px 7px; border: 1px solid var(--blue-4);
}
.cat-card__body { padding: 18px 18px 20px; display: flex; flex-direction: column; flex: 1; }
.cat-card__en { font-family: var(--mono); font-size: 9px; letter-spacing: .14em; color: var(--muted-2); margin-bottom: 6px; }
.cat-card__title { font-size: 19px; font-weight: 800; margin: 0 0 8px; }
.cat-card__desc { font-size: 12px; color: var(--muted); line-height: 1.65; margin: 0 0 16px; flex: 1; }
.cat-card__link { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; color: var(--blue); }
.cat-card__link svg { width: 14px; height: 14px; transition: transform .2s ease; }
.cat-card:hover .cat-card__link svg { transform: translateX(4px); }

/* ---------- Product cards ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.product-card {
  position: relative;
  display: flex; flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  overflow: hidden;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--blue-4); }
.product-card__img {
  position: relative;
  aspect-ratio: 4/3;
  background: #fff;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.product-card__img img {
  width: 100%; height: 100%; object-fit: contain; padding: 10px;
  transition: transform .45s ease;
}
.product-card:hover .product-card__img img { transform: scale(1.035); }
.product-card__cat {
  position: absolute; left: 10px; top: 10px;
  font-family: var(--mono); font-size: 9px; letter-spacing: .1em;
  color: var(--blue); background: rgba(255,255,255,.94);
  border: 1px solid var(--blue-4); padding: 3px 7px;
}
.product-card__body { padding: 16px 16px 18px; display: flex; flex-direction: column; flex: 1; }
.product-card__model { font-family: var(--mono); font-size: 10px; color: var(--muted-2); letter-spacing: .05em; margin-bottom: 4px; }
.product-card__title { font-size: 16px; font-weight: 800; margin: 0 0 6px; line-height: 1.35; }
.product-card__title a { color: var(--ink); }
.product-card__title a:hover { color: var(--blue); }
.product-card__desc { font-size: 12px; color: var(--muted); line-height: 1.6; margin: 0 0 12px; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-card__foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding-top: 10px; border-top: 1px solid var(--line); }
.product-card__tags { display: flex; flex-wrap: wrap; gap: 4px; }
.tag {
  display: inline-flex; align-items: center;
  font-size: 10px; color: var(--muted); background: var(--paper);
  border: 1px solid var(--line); padding: 2px 6px; line-height: 1.5;
}
.tag--blue { color: var(--blue); background: var(--blue-3); border-color: var(--blue-4); }
.product-card__arrow { width: 26px; height: 26px; border: 1px solid var(--line); display: inline-flex; align-items: center; justify-content: center; color: var(--muted); flex: 0 0 auto; }
.product-card__arrow svg { width: 13px; height: 13px; }
.product-card:hover .product-card__arrow { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ---------- Feature strip ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.feature-item { padding: 30px 26px; border-right: 1px solid var(--line); }
.feature-item:last-child { border-right: 0; }
.feature-item__icon { width: 40px; height: 40px; color: var(--blue); margin-bottom: 16px; }
.feature-item__icon svg { width: 100%; height: 100%; }
.feature-item h3 { font-size: 17px; margin: 0 0 8px; }
.feature-item p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.7; }
.feature-item__num { display: block; font-family: var(--mono); font-size: 10px; color: var(--muted-2); letter-spacing: .12em; margin-bottom: 10px; }

/* ---------- Video cards ---------- */
.video-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.video-card {
  position: relative;
  display: block;
  aspect-ratio: 3/4;
  background: var(--ink-2);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.1);
  color: #fff;
}
.video-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease, opacity .3s ease; opacity: .82; }
.video-card:hover img { transform: scale(1.04); opacity: .95; }
.video-card::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(7,23,36,.92) 0%, rgba(7,23,36,.18) 52%, rgba(7,23,36,.05) 100%);
}
.video-card__play {
  position: absolute; z-index: 2; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 54px; height: 54px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.6);
  background: rgba(7,23,36,.35);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
  transition: all .2s ease;
}
.video-card__play svg { width: 18px; height: 18px; margin-left: 2px; }
.video-card:hover .video-card__play { background: var(--blue); border-color: var(--blue); transform: translate(-50%, -50%) scale(1.06); }
.video-card__body { position: absolute; z-index: 2; left: 0; right: 0; bottom: 0; padding: 18px; }
.video-card__cat { font-family: var(--mono); font-size: 9px; letter-spacing: .12em; color: #8fd0f5; margin-bottom: 6px; }
.video-card__title { font-size: 15px; font-weight: 700; line-height: 1.4; margin: 0 0 6px; }
.video-card__meta { font-size: 11px; color: #9eb3c1; display: flex; align-items: center; gap: 8px; }

/* ---------- Solutions ---------- */
.solution-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.solution-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  padding: 28px;
  transition: all .25s ease;
  overflow: hidden;
}
.solution-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--blue); transform: scaleY(0); transform-origin: top; transition: transform .3s ease;
}
.solution-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.solution-card:hover::before { transform: scaleY(1); }
.solution-card__num { font-family: var(--mono); font-size: 10px; color: var(--muted-2); letter-spacing: .12em; }
.solution-card h3 { font-size: 22px; margin: 10px 0 4px; }
.solution-card__en { font-family: var(--mono); font-size: 9px; letter-spacing: .14em; color: var(--blue); margin-bottom: 14px; }
.solution-card p { font-size: 13px; color: var(--muted); line-height: 1.7; margin-bottom: 18px; }
.solution-card__points { list-style: none; padding: 0; margin: 0 0 18px; }
.solution-card__points li { position: relative; padding-left: 14px; font-size: 12px; color: #40525e; margin-bottom: 6px; }
.solution-card__points li::before { content: ""; position: absolute; left: 0; top: 8px; width: 5px; height: 5px; background: var(--blue); }
.solution-card__links { display: flex; flex-wrap: wrap; gap: 6px; }
.solution-card__links a { font-size: 11px; color: var(--muted); border-bottom: 1px solid var(--line); padding-bottom: 1px; }
.solution-card__links a:hover { color: var(--blue); border-color: var(--blue); }

/* ---------- Process ---------- */
.process-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 0; position: relative; }
.process-item { padding: 0 28px; position: relative; border-left: 1px solid rgba(255,255,255,.14); }
.process-item:first-child { border-left: 0; padding-left: 0; }
.process-item__num { font-family: var(--mono); font-size: 12px; color: #6f8fa2; letter-spacing: .12em; margin-bottom: 18px; }
.process-item h3 { font-size: 20px; margin: 0 0 10px; color: #fff; }
.process-item p { font-size: 13px; color: #9fb3c1; line-height: 1.75; margin: 0; }

/* ---------- Stats band ---------- */
.stats-band { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stats-band__item { padding: 28px 24px; border-right: 1px solid var(--line); }
.stats-band__item:last-child { border-right: 0; }
.stats-band__item b { display: block; font-family: var(--mono); font-size: 34px; line-height: 1.1; color: var(--blue); font-weight: 700; }
.stats-band__item span { font-size: 12px; color: var(--muted); letter-spacing: .04em; }

/* ---------- About strip ---------- */
.about-strip { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
.about-strip__logo { height: 34px; margin-bottom: 28px; }
.about-strip h2 { font-size: clamp(28px, 3vw, 42px); margin: 0 0 20px; }
.about-strip p { color: #a9bcc9; font-size: 15px; line-height: 1.85; }
.about-strip__list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 24px; margin-top: 28px; }
.about-strip__list div { border-top: 1px solid rgba(255,255,255,.14); padding-top: 12px; }
.about-strip__list b { display: block; font-size: 13px; color: #fff; margin-bottom: 4px; }
.about-strip__list span { font-size: 12px; color: #8fa6b4; }
.about-strip__panel { border: 1px solid rgba(255,255,255,.14); padding: 30px; background: rgba(255,255,255,.02); }
.about-strip__panel h3 { font-size: 16px; margin: 0 0 16px; color: #fff; }
.about-strip__panel ul { list-style: none; margin: 0; padding: 0; }
.about-strip__panel li { position: relative; padding-left: 18px; color: #a9bcc9; font-size: 13px; margin-bottom: 10px; }
.about-strip__panel li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border: 1px solid var(--blue-2); }

/* ---------- CTA ---------- */
.cta-band { position: relative; background: var(--blue); color: #fff; overflow: hidden; }
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 80px 100%;
  pointer-events: none;
}
.cta-band__inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 64px 0; }
.cta-band h2 { font-size: clamp(28px, 3.4vw, 44px); margin: 0 0 10px; color: #fff; }
.cta-band p { margin: 0; color: rgba(255,255,255,.78); font-size: 15px; }
.cta-band__actions { display: flex; gap: 12px; flex: 0 0 auto; flex-wrap: wrap; }
.cta-band .btn-ent { background: #fff; border-color: #fff; color: var(--ink); }
.cta-band .btn-ent:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.cta-band .btn-ent--ghost { background: transparent; border-color: rgba(255,255,255,.5); color: #fff; }
.cta-band .btn-ent--ghost:hover { background: #fff; color: var(--ink); }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: #9fb3c1; padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 0.8fr 0.9fr 1.1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand img { height: 30px; margin-bottom: 20px; }
.footer-brand p { font-size: 13px; line-height: 1.8; color: #8fa6b4; max-width: 320px; }
.footer-col h4 { font-size: 12px; font-family: var(--mono); letter-spacing: .14em; color: #fff; text-transform: uppercase; margin: 0 0 18px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 9px; }
.footer-col a { color: #9fb3c1; font-size: 13px; }
.footer-col a:hover { color: #fff; }
.footer-contact div { display: flex; gap: 10px; margin-bottom: 12px; font-size: 13px; }
.footer-contact svg { width: 16px; height: 16px; flex: 0 0 auto; margin-top: 2px; color: var(--blue-2); }
.footer-contact b { color: #fff; display: block; font-family: var(--mono); font-size: 14px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.09); padding: 20px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 11px; color: #6f8796; }
.footer-bottom a { color: #8fa6b4; }
.footer-note { max-width: 720px; line-height: 1.7; }

/* ---------- Inner page hero ---------- */
.page-hero {
  position: relative;
  background: var(--ink);
  color: #fff;
  padding: calc(var(--header-h) + 56px) 0 56px;
  overflow: hidden;
}
.page-hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to right, #000, transparent 80%);
  -webkit-mask-image: linear-gradient(to right, #000, transparent 80%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(36px, 4.6vw, 62px); margin: 0 0 18px; }
.page-hero p { color: #adc0cd; max-width: 680px; font-size: 16px; margin: 0; }
.page-hero__meta { display: flex; flex-wrap: wrap; gap: 20px; margin-top: 24px; font-family: var(--mono); font-size: 11px; color: #8fa6b4; letter-spacing: .08em; }
.page-hero__meta span { display: inline-flex; align-items: center; gap: 7px; }
.page-hero__meta span::before { content: ""; width: 5px; height: 5px; background: var(--blue-2); }
.breadcrumb-ent { display: flex; flex-wrap: wrap; gap: 8px; font-size: 12px; color: #7f97a6; margin-bottom: 22px; }
.breadcrumb-ent a { color: #9fb3c1; }
.breadcrumb-ent a:hover { color: #fff; }
.breadcrumb-ent span { color: #5f7787; }
.breadcrumb-ent .current { color: #fff; }

/* ---------- Filter bar ---------- */
.filter-bar {
  position: sticky;
  top: var(--header-h);
  z-index: 900;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.filter-inner { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.filter-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-pill {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--radius);
  transition: all .2s ease;
  cursor: pointer;
}
.filter-pill:hover { border-color: var(--blue-4); color: var(--blue); }
.filter-pill.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.filter-search { margin-left: auto; position: relative; flex: 0 0 280px; }
.filter-search input {
  width: 100%;
  height: 40px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 0 40px 0 14px;
  font-size: 13px;
  border-radius: var(--radius);
  outline: none;
}
.filter-search input:focus { border-color: var(--blue); }
.filter-search svg { position: absolute; right: 13px; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; color: var(--muted-2); }
.filter-count { font-family: var(--mono); font-size: 11px; color: var(--muted-2); letter-spacing: .06em; }

/* ---------- Product detail ---------- */
.product-hero { padding: calc(var(--header-h) + 40px) 0 60px; background: var(--paper); border-bottom: 1px solid var(--line); }
.product-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.product-media {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  padding: 20px;
}
.product-media img { width: 100%; aspect-ratio: 4/3; object-fit: contain; display: block; }
.product-media__tag {
  position: absolute; top: 20px; left: 20px;
  background: var(--ink); color: #fff;
  font-family: var(--mono); font-size: 9px; letter-spacing: .12em;
  padding: 5px 9px;
}
.product-media__foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 10px; color: var(--muted-2); letter-spacing: .08em; }
.product-info__cat { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--blue); margin-bottom: 12px; }
.product-info h1 { font-size: clamp(30px, 3.6vw, 48px); margin: 0 0 8px; }
.product-info__model { font-family: var(--mono); font-size: 12px; color: var(--muted-2); letter-spacing: .06em; margin-bottom: 18px; }
.product-info__tagline { font-size: 18px; font-weight: 700; color: var(--blue); margin-bottom: 14px; }
.product-info__summary { font-size: 15px; color: #465b68; line-height: 1.85; margin-bottom: 24px; }
.check-list { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 10px; }
.check-list li { position: relative; padding-left: 26px; font-size: 14px; color: #334854; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 4px;
  width: 16px; height: 16px; border: 1px solid var(--blue);
  background: var(--blue-3);
}
.check-list li::after {
  content: ""; position: absolute; left: 5px; top: 8px;
  width: 7px; height: 4px; border-left: 2px solid var(--blue); border-bottom: 2px solid var(--blue);
  transform: rotate(-45deg);
}
.product-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 22px; }
.product-meta { display: flex; flex-wrap: wrap; gap: 18px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.product-meta span { display: inline-flex; align-items: center; gap: 7px; }
.product-meta svg { width: 14px; height: 14px; color: var(--blue); }

.detail-section { padding: 72px 0; border-bottom: 1px solid var(--line); }
.detail-section:last-of-type { border-bottom: 0; }
.detail-grid { display: grid; grid-template-columns: 260px 1fr; gap: 48px; align-items: start; }
.detail-aside { position: sticky; top: calc(var(--header-h) + 24px); }
.detail-aside__label { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--blue); margin-bottom: 10px; }
.detail-aside h2 { font-size: 28px; margin: 0 0 14px; }
.detail-aside p { font-size: 13px; color: var(--muted); line-height: 1.75; }
.detail-body h3 { font-size: 20px; margin: 0 0 14px; }
.detail-body p { font-size: 14px; color: #465b68; line-height: 1.85; }

.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.spec-table th, .spec-table td { padding: 12px 14px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.spec-table th { width: 30%; background: var(--paper); font-weight: 700; color: var(--ink); white-space: nowrap; }
.spec-table td { color: #465b68; }

.app-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.app-chip { display: inline-flex; align-items: center; gap: 7px; background: var(--paper); border: 1px solid var(--line); padding: 8px 12px; font-size: 12px; color: #40525e; }
.app-chip::before { content: ""; width: 5px; height: 5px; background: var(--blue); }

.step-list { list-style: none; padding: 0; margin: 0; counter-reset: step; }
.step-list li { position: relative; padding: 0 0 22px 52px; counter-increment: step; }
.step-list li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  width: 34px; height: 34px;
  border: 1px solid var(--blue); background: var(--blue-3); color: var(--blue);
  font-family: var(--mono); font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.step-list li::after {
  content: ""; position: absolute; left: 17px; top: 40px; bottom: 6px;
  width: 1px; background: var(--line);
}
.step-list li:last-child::after { display: none; }
.step-list strong { display: block; font-size: 14px; margin-bottom: 4px; }
.step-list span { display: block; font-size: 13px; color: var(--muted); line-height: 1.7; }

.info-box { border: 1px solid var(--line); border-left: 3px solid var(--blue); background: var(--paper); padding: 18px 20px; }
.info-box h4 { font-size: 14px; margin: 0 0 8px; }
.info-box ul { margin: 0; padding-left: 18px; }
.info-box li { font-size: 13px; color: #465b68; margin-bottom: 6px; }
.info-box--warn { border-left-color: var(--orange); background: #fff7f2; }

.config-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px 18px; }
.config-item { display: flex; align-items: center; gap: 10px; border-bottom: 1px dashed var(--line); padding: 9px 0; font-size: 13px; color: #40525e; }
.config-item::before { content: ""; width: 6px; height: 6px; background: var(--blue); flex: 0 0 auto; }

.related-section { background: var(--paper); }

/* ---------- Category page ---------- */
.cat-hero { padding: calc(var(--header-h) + 48px) 0 0; background: var(--ink); color: #fff; }
.cat-hero__top { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: end; padding-bottom: 48px; }
.cat-hero__num { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; color: #7fc4ee; margin-bottom: 16px; }
.cat-hero h1 { font-size: clamp(38px, 5vw, 68px); margin: 0 0 16px; }
.cat-hero__en { font-family: var(--mono); font-size: 11px; letter-spacing: .18em; color: #6f8fa2; }
.cat-hero p { color: #adc0cd; font-size: 16px; line-height: 1.8; max-width: 620px; }
.cat-hero__img { background: #fff; padding: 14px; border: 1px solid rgba(255,255,255,.18); }
.cat-hero__img img { width: 100%; aspect-ratio: 4/3; object-fit: contain; display: block; }
.cat-principle { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.principle-box { border: 1px solid var(--line); background: #fff; padding: 28px; }
.principle-box__label { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--blue); margin-bottom: 12px; }
.principle-box h3 { font-size: 22px; margin: 0 0 12px; }
.principle-box p { font-size: 14px; color: #465b68; line-height: 1.85; margin: 0; }
.suitable-list { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 18px; }
.suitable-list li { position: relative; padding-left: 16px; font-size: 13px; color: #40525e; }
.suitable-list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; background: var(--blue); }

/* ---------- Selector ---------- */
.selector-shell { max-width: 980px; margin: 0 auto; }
.selector-card { background: #fff; border: 1px solid var(--line); padding: 40px; box-shadow: var(--shadow-sm); }
.selector-progress { display: flex; align-items: center; gap: 8px; margin-bottom: 28px; }
.selector-progress__bar { flex: 1; height: 3px; background: var(--paper-2); position: relative; overflow: hidden; }
.selector-progress__bar span { position: absolute; inset: 0 auto 0 0; width: 0; background: var(--blue); transition: width .3s ease; }
.selector-progress__text { font-family: var(--mono); font-size: 11px; color: var(--muted-2); white-space: nowrap; }
.selector-q { font-size: clamp(24px, 2.6vw, 34px); margin: 0 0 8px; }
.selector-hint { font-size: 13px; color: var(--muted); margin-bottom: 28px; }
.selector-options { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.selector-opt {
  text-align: left;
  border: 1px solid var(--line);
  background: #fff;
  padding: 18px 18px;
  cursor: pointer;
  transition: all .2s ease;
  display: flex; flex-direction: column; gap: 6px;
}
.selector-opt:hover { border-color: var(--blue); background: var(--blue-3); }
.selector-opt.is-selected { border-color: var(--blue); background: var(--blue-3); box-shadow: inset 0 0 0 1px var(--blue); }
.selector-opt b { font-size: 15px; }
.selector-opt span { font-size: 11px; color: var(--muted); line-height: 1.5; }
.selector-nav { display: flex; justify-content: space-between; align-items: center; margin-top: 28px; gap: 12px; }
.selector-back { background: none; border: 0; color: var(--muted); font-size: 13px; cursor: pointer; padding: 8px 0; }
.selector-back:hover { color: var(--blue); }
.selector-result { display: none; }
.selector-result.is-active { display: block; }
.selector-result__head { text-align: center; margin-bottom: 32px; }
.selector-result__head h2 { font-size: 30px; margin: 0 0 10px; }
.selector-result__head p { color: var(--muted); font-size: 14px; }
.selector-result__grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.selector-reason { font-size: 11px; color: var(--blue); margin-top: 6px; }
.selector-again { margin: 28px auto 0; display: flex; justify-content: center; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-card { border: 1px solid var(--line); background: #fff; padding: 30px; }
.contact-card__label { font-family: var(--mono); font-size: 10px; letter-spacing: .14em; color: var(--blue); margin-bottom: 14px; }
.contact-card h3 { font-size: 22px; margin: 0 0 10px; }
.contact-card p { font-size: 13px; color: var(--muted); line-height: 1.75; }
.contact-phone { display: block; font-family: var(--mono); font-size: clamp(24px, 3vw, 36px); font-weight: 700; color: var(--ink); letter-spacing: .01em; margin: 6px 0 4px; }
.contact-phone:hover { color: var(--blue); }
.contact-address { display: flex; gap: 10px; font-size: 14px; color: #334854; margin-top: 16px; }
.contact-address svg { width: 18px; height: 18px; color: var(--blue); flex: 0 0 auto; margin-top: 2px; }
.checklist { list-style: none; margin: 0; padding: 0; counter-reset: c; }
.checklist li { position: relative; padding: 10px 0 10px 38px; border-bottom: 1px dashed var(--line); font-size: 13px; color: #40525e; counter-increment: c; }
.checklist li::before { content: counter(c, decimal-leading-zero); position: absolute; left: 0; top: 11px; font-family: var(--mono); font-size: 10px; color: var(--blue); border: 1px solid var(--blue-4); background: var(--blue-3); width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; }

/* ---------- FAQ / accordion ---------- */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q { width: 100%; text-align: left; background: none; border: 0; padding: 22px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-size: 15px; font-weight: 700; color: var(--ink); cursor: pointer; }
.faq-q svg { width: 18px; height: 18px; flex: 0 0 auto; color: var(--blue); transition: transform .2s ease; }
.faq-item.is-open .faq-q svg { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 0 22px; font-size: 14px; color: var(--muted); line-height: 1.85; max-width: 820px; }
.faq-item.is-open .faq-a { display: block; }

/* ---------- Video modal ---------- */
.modal-video .modal-content { background: #000; border: 0; border-radius: 0; }
.modal-video .modal-body { padding: 0; display: flex; align-items: center; justify-content: center; background: #000; }
.modal-video video { width: 100%; max-height: 82vh; display: block; background: #000; }
.modal-video .btn-close { position: absolute; right: 14px; top: 14px; z-index: 5; filter: invert(1); opacity: .9; }
.modal-video__caption { background: var(--ink); color: #fff; padding: 14px 18px; display: flex; justify-content: space-between; gap: 16px; font-size: 12px; }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-in { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }

/* ---------- Utilities ---------- */
.hr-line { height: 1px; background: var(--line); border: 0; margin: 0; }
.sticky-cta { display: none; }
.badge-ent { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 10px; letter-spacing: .1em; color: var(--blue); background: var(--blue-3); border: 1px solid var(--blue-4); padding: 4px 8px; }
.badge-ent--orange { color: #c14a14; background: #fff1e9; border-color: #ffd5c1; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* ---------- Responsive ---------- */
@media (max-width: 1199.98px) {
  .cat-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .product-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .video-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .hero-title { font-size: clamp(44px, 7vw, 72px); }
  .about-strip { gap: 40px; }
  .footer-grid { grid-template-columns: 1.4fr .8fr 1fr 1.1fr; gap: 32px; }
}

@media (max-width: 991.98px) {
  :root { --header-h: 68px; }
  .main-nav, .header-phone { display: none; }
  .navbar-toggler { display: inline-flex; margin-left: auto; }
  .header-actions { margin-left: auto; }
  .hero { padding-top: calc(var(--header-h) + 44px); }
  .hero__inner .row { --bs-gutter-y: 40px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 18px 0; }
  .hero-stat:nth-child(2) { border-right: 0; }
  .hero-stat:nth-child(3), .hero-stat:nth-child(4) { padding-top: 14px; border-top: 0; }
  .cat-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .product-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .video-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .solution-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .feature-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .feature-item:nth-child(2) { border-right: 0; }
  .feature-item:nth-child(1), .feature-item:nth-child(2) { border-bottom: 1px solid var(--line); }
  .process-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 32px 0; }
  .process-item:nth-child(3) { border-left: 0; padding-left: 0; }
  .about-strip { grid-template-columns: 1fr; }
  .about-strip__panel { max-width: 640px; }
  .product-layout { grid-template-columns: 1fr; gap: 32px; }
  .detail-grid { grid-template-columns: 1fr; gap: 24px; }
  .detail-aside { position: static; }
  .cat-hero__top { grid-template-columns: 1fr; gap: 32px; }
  .cat-hero__img { max-width: 520px; }
  .cat-principle { grid-template-columns: 1fr; gap: 28px; }
  .contact-grid { grid-template-columns: 1fr; }
  .selector-options { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .selector-result__grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .cta-band__inner { flex-direction: column; align-items: flex-start; gap: 24px; padding: 52px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .stats-band__item:nth-child(2) { border-right: 0; }
  .stats-band__item:nth-child(1), .stats-band__item:nth-child(2) { border-bottom: 1px solid var(--line); }
  .filter-search { margin-left: 0; flex: 1 1 100%; }
}

@media (max-width: 767.98px) {
  .container { padding-left: 18px; padding-right: 18px; }
  .section { padding: 64px 0; }
  .section--tight { padding: 52px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 18px; margin-bottom: 32px; }
  .hero-title { font-size: clamp(40px, 12vw, 60px); }
  .hero-sub { font-size: 15px; }
  .hero-actions .btn-ent { flex: 1 1 100%; }
  .cat-grid, .product-grid, .video-grid, .solution-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .cat-card__body, .product-card__body { padding: 13px; }
  .cat-card__title { font-size: 16px; }
  .product-card__title { font-size: 14px; }
  .product-card__desc { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-item { border-right: 0; border-bottom: 1px solid var(--line); padding: 24px 0; }
  .feature-item:last-child { border-bottom: 0; }
  .process-grid { grid-template-columns: 1fr; gap: 28px; }
  .process-item { border-left: 0; padding-left: 0; border-top: 1px solid rgba(255,255,255,.14); padding-top: 24px; }
  .process-item:first-child { border-top: 0; padding-top: 0; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .stats-band__item b { font-size: 26px; }
  .selector-card { padding: 24px 18px; }
  .selector-options { grid-template-columns: 1fr; }
  .selector-result__grid { grid-template-columns: 1fr; }
  .config-grid { grid-template-columns: 1fr; }
  .suitable-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
  .page-hero { padding-top: calc(var(--header-h) + 40px); }
  .product-hero { padding-top: calc(var(--header-h) + 24px); }
  .detail-section { padding: 52px 0; }
  .spec-table th { width: 38%; white-space: normal; }
  .cta-band h2 { font-size: 28px; }
  .cta-band__actions { width: 100%; }
  .cta-band__actions .btn-ent { flex: 1 1 100%; }
  .about-strip__list { grid-template-columns: 1fr; }
  .modal-video video { max-height: 70vh; }
}

@media (max-width: 420px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* Print */
@media print {
  .site-header, .site-footer, .cta-band, .filter-bar, .sticky-cta, .mobile-nav { display: none !important; }
  body { color: #000; }
  .page-hero, .product-hero, .hero { background: #fff !important; color: #000 !important; padding: 20px 0 !important; }
  a { text-decoration: underline; }
}

/* ---------- Additions: page-specific ---------- */
.skip-link {
  position: fixed;
  left: 16px; top: -80px;
  z-index: 2000;
  background: var(--ink); color: #fff;
  padding: 12px 18px; font-size: 13px;
  transition: top .2s ease;
}
.skip-link:focus { top: 12px; color: #fff; }

.dropdown-menu-dark {
  background: var(--ink-2);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 2px;
  padding: 6px;
  min-width: 180px;
}
.dropdown-menu-dark .dropdown-item {
  color: rgba(255,255,255,.8);
  font-size: 13px;
  padding: 9px 12px;
  border-radius: 2px;
}
.dropdown-menu-dark .dropdown-item:hover,
.dropdown-menu-dark .dropdown-item:focus { background: var(--blue); color: #fff; }

.product-card, .product-card:hover,
.solution-card, .solution-card:hover,
.cat-card, .cat-card:hover { color: inherit; text-decoration: none; }
.product-card:hover .product-card__title { color: var(--blue); }
.solution-card__links span {
  font-size: 11px; color: var(--muted);
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
}

.about-intro { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: start; }
.about-intro .about-strip__list b { color: var(--ink); }
.about-intro .about-strip__list span { color: var(--muted); }
.about-intro .about-strip__list { grid-template-columns: 1fr 1fr; }
.feature-grid--5 { grid-template-columns: repeat(5, minmax(0,1fr)); }
.feature-grid--5 .feature-item { padding: 26px 18px; }

.detail-body > h3:first-child { margin-top: 0; }
.detail-body .step-list { margin-top: 8px; }
.product-info .check-list { margin-bottom: 24px; }

.video-card__body { display: block; }
.video-card__cat, .video-card__title, .video-card__meta { display: block; }

.selector-result__grid .product-card { height: 100%; }
.selector-result__grid .product-card__desc { display: -webkit-box; }

@media (max-width: 1199.98px) {
  .feature-grid--5 { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .feature-grid--5 .feature-item:nth-child(3) { border-right: 0; }
}
@media (max-width: 991.98px) {
  .about-intro { grid-template-columns: 1fr; gap: 32px; }
  .feature-grid--5 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 767.98px) {
  .feature-grid--5 { grid-template-columns: 1fr; }
  .about-intro .about-strip__list { grid-template-columns: 1fr; }
}

/* ---------- Fixes ---------- */
html { overflow-x: hidden; }
.section-head__link { white-space: nowrap; }
.industry-strip__inner { min-width: 0; }
.industry-strip__list { flex: 1 1 0; min-width: 0; }
.hero-stage__bar { flex-wrap: wrap; }
.product-hero .breadcrumb-ent a,
.product-hero .breadcrumb-ent span { color: var(--muted); }
.product-hero .breadcrumb-ent a:hover { color: var(--blue); }
.product-hero .breadcrumb-ent .current { color: var(--ink); }

/* ---------- Mobile refinements ---------- */
@media (max-width: 767.98px) {
  .hero-stage__tag { position: static; display: inline-block; margin-bottom: 12px; }
  .hero-stage__label { position: static; display: inline-flex; margin-top: 12px; }
  .hero-stage__bar { margin-top: 10px; }
  .industry-strip__label { display: none; }
  .industry-strip__list { gap: 22px; }
  .product-media__tag { position: static; display: inline-block; margin-bottom: 12px; max-width: 100%; white-space: normal; line-height: 1.5; }
  .product-media { padding: 14px; }
}
@media (max-width: 360px) {
  .cat-grid, .product-grid, .video-grid { grid-template-columns: 1fr; }
}

/* ---------- Mobile filter + focus ---------- */
.skip-link:focus:not(:focus-visible) { top: -80px; }
.skip-link:focus-visible { top: 12px; }
@media (max-width: 767.98px) {
  .filter-inner { gap: 10px; }
  .filter-pills {
    flex-wrap: nowrap;
    overflow-x: auto;
    width: 100%;
    padding-bottom: 4px;
    scrollbar-width: none;
  }
  .filter-pills::-webkit-scrollbar { display: none; }
  .filter-pill { white-space: nowrap; }
  .filter-search { flex: 1 1 100%; }
}
@media (max-width: 767.98px) {
  .selector-result__head h2 { font-size: 24px; }
}

/* ==========================================================================
   Hero product carousel (transparent cutouts on light stage)
   ========================================================================== */
.hero-carousel {
  background: transparent;
  border: 1px solid rgba(255,255,255,.12);
  padding: 0;
  box-shadow: 0 40px 80px rgba(0,0,0,.35);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.hero-carousel .hero-stage__tag {
  z-index: 5;
  background: rgba(7,23,36,.82);
  border: 1px solid rgba(255,255,255,.14);
}
.hero-carousel__viewport {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 50% 55%, rgba(226,242,252,.55) 0%, rgba(170,210,235,.28) 32%, rgba(90,150,190,.08) 62%, rgba(90,150,190,0) 82%),
    linear-gradient(150deg, rgba(255,255,255,.13) 0%, rgba(255,255,255,.035) 55%, rgba(255,255,255,.08) 100%);
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.hero-carousel__viewport::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 55%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 55%, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero-carousel__viewport::after {
  content: "";
  position: absolute;
  left: 7%; right: 7%; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.22), transparent);
}
.hero-slide {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7% 8% 8%;
  opacity: 0;
  transform: scale(.982);
  transition: opacity .8s ease, transform .8s ease;
  pointer-events: none;
}
.hero-slide.is-active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  z-index: 2;
}
.hero-slide img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 22px 30px rgba(0,0,0,.45));
  user-select: none;
  -webkit-user-drag: none;
}
.hero-carousel__info {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 18px 12px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.hero-carousel__cat {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .14em;
  color: #7fc4ee;
  text-transform: uppercase;
  margin-bottom: 3px;
}
.hero-carousel__name {
  display: block;
  font-size: 17px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  letter-spacing: -.01em;
}
.hero-carousel__model {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  color: #8fa6b4;
  letter-spacing: .04em;
  margin-top: 3px;
}
.hero-carousel__controls {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
}
.hero-carousel__arrow {
  width: 30px; height: 30px;
  border: 1px solid rgba(255,255,255,.2);
  background: transparent;
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  transition: all .2s ease;
}
.hero-carousel__arrow:hover { background: var(--blue); border-color: var(--blue); }
.hero-carousel__arrow svg { width: 14px; height: 14px; }
#heroPrev svg { transform: rotate(180deg); }
.hero-carousel__dots { display: flex; align-items: center; gap: 6px; }
.hero-carousel__dot {
  width: 6px; height: 6px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255,255,255,.28);
  cursor: pointer;
  transition: all .2s ease;
}
.hero-carousel__dot:hover { background: rgba(255,255,255,.6); }
.hero-carousel__dot.is-active { width: 18px; border-radius: 3px; background: #3fa5e4; }
.hero-carousel .hero-stage__bar {
  color: #8fa6b4;
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: 0;
  padding: 11px 18px;
}
.hero-carousel .hero-stage__bar span:last-child { color: #d7e4ec; }

@media (max-width: 991.98px) {
  .hero-carousel__viewport { aspect-ratio: 4 / 3; }
}
@media (max-width: 767.98px) {
  .hero-carousel__viewport { aspect-ratio: 1 / 1; }
  .hero-slide { padding: 5% 6%; }
  .hero-carousel__info { flex-direction: column; align-items: stretch; gap: 10px; padding: 13px 14px 12px; }
  .hero-carousel__controls { justify-content: space-between; }
  .hero-carousel .hero-stage__bar { padding: 10px 14px; }
}

/* ==========================================================================
   Product detail gallery / spec grid
   ========================================================================== */
.product-gallery-section { background: var(--paper); }
.product-gallery__stage {
  position: relative;
  aspect-ratio: 4 / 3;
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
}
.pg-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3%;
  opacity: 0;
  transform: scale(.99);
  transition: opacity .7s ease, transform .7s ease;
  pointer-events: none;
}
.pg-slide.is-active { opacity: 1; transform: none; pointer-events: auto; z-index: 2; }
.pg-slide img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; }
.product-gallery__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}
.product-gallery__caption { display: flex; align-items: baseline; gap: 14px; min-width: 0; }
.product-gallery__index { font-family: var(--mono); font-size: 10px; color: var(--blue); letter-spacing: .08em; white-space: nowrap; }
.product-gallery__label { font-size: 15px; font-weight: 700; color: var(--ink); }
.product-gallery__controls { display: flex; align-items: center; gap: 9px; flex: 0 0 auto; }
.product-gallery__arrow {
  width: 32px; height: 32px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer; padding: 0;
  transition: all .2s ease;
}
.product-gallery__arrow:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.product-gallery__arrow svg { width: 14px; height: 14px; }
.product-gallery__prev svg { transform: rotate(180deg); }
.product-gallery__dots { display: flex; align-items: center; gap: 6px; }
.product-gallery__dot {
  width: 6px; height: 6px; padding: 0; border: 0; border-radius: 50%;
  background: var(--line); cursor: pointer; transition: all .2s ease;
}
.product-gallery__dot.is-active { width: 18px; border-radius: 3px; background: var(--blue); }
.product-gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px;
  padding-top: 10px;
}
.product-gallery__thumb {
  border: 1px solid var(--line);
  background: #fff;
  padding: 4px;
  cursor: pointer;
  transition: all .2s ease;
}
.product-gallery__thumb:hover { border-color: var(--blue-4); }
.product-gallery__thumb.is-active { border-color: var(--blue); box-shadow: inset 0 0 0 1px var(--blue); }
.product-gallery__thumb img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain; }

.spec-gallery {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}
.spec-item {
  margin: 0;
  background: #fff;
  border: 1px solid var(--line);
  padding: 10px 10px 12px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.spec-item:hover { border-color: var(--blue-4); box-shadow: var(--shadow-sm); }
.spec-item img { display: block; width: 100%; aspect-ratio: 1 / 1; object-fit: contain; background: #fff; }
.spec-item figcaption { margin-top: 8px; font-size: 11px; line-height: 1.55; color: var(--muted); text-align: center; }

@media (max-width: 1199.98px) {
  .spec-gallery { grid-template-columns: repeat(4, minmax(0,1fr)); }
}
@media (max-width: 991.98px) {
  .spec-gallery { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .product-gallery__thumbs { grid-template-columns: repeat(4, minmax(0,1fr)); }
}
@media (max-width: 767.98px) {
  .product-gallery__bar { flex-direction: column; align-items: stretch; gap: 10px; }
  .product-gallery__controls { justify-content: space-between; }
  .product-gallery__caption { flex-direction: column; gap: 4px; }
  .product-gallery__thumbs { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .spec-gallery { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
  .spec-item figcaption { font-size: 10px; }
}

/* ---------- Contact: WeChat + logo aspect ---------- */
.footer-brand img { width: auto; }
.about-strip__logo { width: auto; }
.wechat-block { display: flex; align-items: center; gap: 18px; margin-top: 14px; }
.wechat-block img { width: 150px; height: 150px; flex: 0 0 auto; background: #fff; border: 1px solid var(--line); padding: 8px; }
.wechat-block strong { display: block; font-size: 15px; margin-bottom: 4px; }
.wechat-block p { margin: 0 0 6px; font-size: 12px; color: var(--muted); }
.wechat-block a { font-size: 12px; color: var(--blue); word-break: break-all; }
@media (max-width: 575.98px) {
  .wechat-block { flex-direction: column; align-items: flex-start; }
}

/* Long product names: balance lines instead of leaving one character */
.product-info h1 { font-size: clamp(28px, 3.2vw, 44px); text-wrap: balance; }