/* ==========================================================================
   淮安馨雅自动化设备有限公司 · 企业官网样式表
   色系：红 / 白  —— 主色 #C8102E，中性灰阶 + 纯白留白
   ========================================================================== */

:root {
  --red: #c8102e;
  --red-dark: #9d0b23;
  --red-light: #e23a52;
  --red-50: #fdf2f4;
  --red-100: #f9e0e4;

  --ink: #0f1418;
  --ink-2: #1b2229;
  --body: #4a5159;
  --muted: #868d96;
  --line: #e7e9ec;
  --line-strong: #d6dae0;
  --soft: #f6f7f9;
  --white: #ffffff;

  --radius: 6px;
  --radius-lg: 10px;
  --container: 1200px;
  --header-h: 76px;
  --ease: cubic-bezier(0.22, 0.68, 0.28, 1);

  --font: "Inter", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei",
    "Hiragino Sans GB", "Source Han Sans SC", sans-serif;
  --font-num: "Inter", "DIN Alternate", "Bahnschrift", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4, p { margin: 0; }

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

/* ---------------------------------------------------------------- 布局 */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

.section { padding: 104px 0; position: relative; }
.section--soft { background: var(--soft); }
.section--tight { padding: 72px 0; }
.section--dark { background: var(--ink); color: rgba(255, 255, 255, 0.66); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 52px;
}
.section-head__main { max-width: 720px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--red);
}
.eyebrow--light { color: var(--red-light); }

.h2 {
  font-size: clamp(26px, 2.6vw, 36px);
  line-height: 1.28;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.section--dark .h2 { color: #fff; }

.lead {
  margin-top: 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 620px;
}
.section--dark .lead { color: rgba(255, 255, 255, 0.55); }

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
  transition: color 0.25s;
}
.link-more svg { transition: transform 0.3s var(--ease); }
.link-more:hover { color: var(--red); }
.link-more:hover svg { transform: translateX(5px); }

/* ---------------------------------------------------------------- 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 50px;
  padding: 0 26px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.28s var(--ease);
  white-space: nowrap;
}
.btn svg { transition: transform 0.3s var(--ease); }

.btn--primary { background: var(--red); color: #fff; box-shadow: 0 6px 18px rgba(200, 16, 46, 0.22); }
.btn--primary:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(200, 16, 46, 0.28); }
.btn--primary:hover svg { transform: translateX(4px); }

.btn--outline { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn--outline:hover { border-color: var(--ink); background: var(--ink); color: #fff; }

/* 产品弹窗 · 选取完整型号 */
.btn--pick { border-color: var(--red-100); background: var(--red-50); color: var(--red); }
.btn--pick:hover { border-color: var(--red); background: var(--red); color: #fff; }

.btn--white { background: #fff; color: var(--red); }
.btn--white:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }

.btn--sm { height: 42px; padding: 0 18px; font-size: 14px; }

/* ---------------------------------------------------------------- 顶部信息条 */
.topbar {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.62);
  font-size: 12.5px;
  letter-spacing: 0.02em;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
}
.topbar__items { display: flex; align-items: center; gap: 26px; }
.topbar__item { display: inline-flex; align-items: center; gap: 7px; }
.topbar__item svg { color: var(--red-light); flex: none; }
.topbar__item a:hover { color: #fff; }

/* ---------------------------------------------------------------- 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s, border-color 0.3s;
}
.site-header.is-stuck { box-shadow: 0 6px 24px rgba(15, 20, 24, 0.07); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand__mark { width: 40px; height: 40px; flex: none; object-fit: contain; }
.brand__mark.is-custom { width: auto; height: 40px; max-width: 190px; }
.brand__text { display: flex; flex-direction: column; line-height: 1.25; }
.brand__cn {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.brand__en {
  font-size: 9px;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  font-weight: 500;
  margin-top: 2px;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav__link {
  position: relative;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  border-radius: 4px;
  transition: color 0.22s;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}
.nav__link:hover { color: var(--red); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link.is-active { color: var(--red); }
.nav__link.is-active::after { transform: scaleX(1); }

.header__actions { display: flex; align-items: center; gap: 14px; flex: none; }
.header__tel { display: flex; align-items: center; gap: 9px; }
.header__tel svg { color: var(--red); }
.header__tel span { display: block; font-size: 10px; color: var(--muted); letter-spacing: 0.08em; }
.header__tel strong {
  display: block;
  font-family: var(--font-num);
  font-size: 16px;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 4px;
  padding: 0;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 11px;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  transition: 0.3s var(--ease);
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 20px; }
.nav-toggle span:nth-child(3) { top: 25px; }
.nav-toggle.is-open span:nth-child(1) { top: 20px; transform: rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { top: 20px; transform: rotate(-45deg); }

.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: #fff;
  padding: 8px 0 20px;
}
.mobile-nav.is-open { display: block; }
.mobile-nav a {
  display: block;
  padding: 13px 4px;
  font-size: 16px;
  color: var(--ink-2);
  border-bottom: 1px solid var(--soft);
}
.mobile-nav a.is-active { color: var(--red); font-weight: 600; }
.mobile-nav .btn { width: 100%; margin-top: 16px; }

/* ---------------------------------------------------------------- 首页 Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 84px 0 72px;
  background: #fff;
}
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(to right, rgba(15, 20, 24, 0.038) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 20, 24, 0.038) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: radial-gradient(120% 90% at 62% 20%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 90% at 62% 20%, #000 20%, transparent 78%);
}
.hero-bg::after {
  content: "";
  position: absolute;
  top: -220px;
  right: -120px;
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(200, 16, 46, 0.09) 0%, rgba(200, 16, 46, 0) 62%);
}

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 64px;
  align-items: center;
}
.hero__title {
  font-size: clamp(36px, 4.3vw, 58px);
  line-height: 1.16;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}
.hero__title .hl { color: var(--red); position: relative; display: inline-block; z-index: 0; }
.hero__title .hl::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  bottom: 6px;
  height: 8px;
  background: var(--red-100);
  z-index: -1;
  opacity: 0.9;
}
.hero__text {
  font-size: 16px;
  line-height: 1.95;
  color: var(--body);
  max-width: 520px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.hero__certs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.cert-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.02em;
}
.cert-chip::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--red);
}

.hero__visual { position: relative; display: flex; justify-content: center; }
.gauge-wrap { position: relative; width: 100%; max-width: 430px; }
.gauge { width: 100%; height: auto; }

.needle { transform-origin: 210px 210px; animation: needle 6s var(--ease) infinite alternate; }
@keyframes needle {
  0% { transform: rotate(-16deg); }
  100% { transform: rotate(24deg); }
}

.float-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: 0 14px 34px rgba(15, 20, 24, 0.1);
  backdrop-filter: blur(6px);
}
.float-card__label { font-size: 10.5px; letter-spacing: 0.14em; color: var(--muted); text-transform: uppercase; }
.float-card__value {
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.01em;
  margin-top: 3px;
}
.float-card--tl { top: 4%; left: -6%; }
.float-card--br { bottom: 8%; right: -4%; }
.float-card--br .float-card__value { color: var(--red); }

.dot-live {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
  margin-right: 6px;
  box-shadow: 0 0 0 0 rgba(200, 16, 46, 0.5);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  70% { box-shadow: 0 0 0 8px rgba(200, 16, 46, 0); }
  100% { box-shadow: 0 0 0 0 rgba(200, 16, 46, 0); }
}

/* ---------------------------------------------------------------- 数据条 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  margin-top: 68px;
  padding-top: 34px;
  position: relative;
}
.stat { padding-right: 20px; }
.stat + .stat { border-left: 1px solid var(--line); padding-left: 30px; }
.stat__value {
  font-family: var(--font-num);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.stat__suffix { font-size: 16px; font-weight: 500; color: var(--red); margin-left: 3px; }
.stat__label { margin-top: 6px; font-size: 13px; color: var(--muted); letter-spacing: 0.02em; }

/* ---------------------------------------------------------------- 产品卡片 */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.pcard {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 26px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.3s, box-shadow 0.35s, transform 0.35s var(--ease);
  overflow: hidden;
}
.pcard::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 16px;
  height: 16px;
  border-top: 2px solid var(--red);
  border-right: 2px solid var(--red);
  opacity: 0;
  transition: opacity 0.3s;
}
.pcard:hover {
  border-color: rgba(200, 16, 46, 0.35);
  box-shadow: 0 18px 40px rgba(15, 20, 24, 0.08);
  transform: translateY(-4px);
}
.pcard:hover::after { opacity: 1; }

.pcard__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.pcard__icon {
  width: 48px;
  height: 48px;
  border-radius: 6px;
  background: var(--red-50);
  display: grid;
  place-items: center;
  color: var(--red);
  flex: none;
  transition: background 0.3s, color 0.3s;
}
.pcard:hover .pcard__icon { background: var(--red); color: #fff; }
.pcard__model {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding-top: 4px;
}
.pcard__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-top: 18px;
  letter-spacing: 0.01em;
}
.pcard__desc {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 48px;
}
.pcard__tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.tag {
  font-size: 11.5px;
  color: var(--body);
  background: var(--soft);
  border: 1px solid transparent;
  border-radius: 3px;
  padding: 3px 8px;
  letter-spacing: 0.01em;
}
.pcard__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}
.pcard__cat { font-size: 12px; color: var(--muted); letter-spacing: 0.06em; }
.pcard__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--red);
}
.pcard__more svg { transition: transform 0.3s var(--ease); }
.pcard:hover .pcard__more svg { transform: translateX(4px); }

/* 带产品主图的卡片 */
.pcard--media { padding: 0; }
.pcard__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: radial-gradient(120% 95% at 50% 0%, #ffffff 0%, #f5f7fa 62%, #edf0f4 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.pcard__media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(15, 20, 24, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 20, 24, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.pcard__media img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 16px 20px 10px;
  transition: transform 0.55s var(--ease);
}
.pcard--media:hover .pcard__media img { transform: scale(1.05); }
.pcard__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 5px 7px 4px;
}
.pcard__body { display: flex; flex-direction: column; flex: 1; padding: 20px 24px 22px; }
.pcard--media .pcard__name { margin-top: 0; font-size: 17px; }
.pcard--media .pcard__foot { margin-top: auto; }

.modal__figure {
  margin-bottom: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: radial-gradient(120% 95% at 50% 0%, #ffffff 0%, #f5f7fa 65%, #edf0f4 100%);
  overflow: hidden;
}
.modal__figure img {
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  padding: 14px;
}

/* ---------------------------------------------------------------- 优势 */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.feature {
  padding: 34px 28px 0 0;
  position: relative;
}
.feature + .feature { border-left: 1px solid var(--line); padding-left: 28px; }
.feature__no {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 600;
  color: var(--red);
  letter-spacing: 0.16em;
}
.feature__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin: 14px 0 10px;
}
.feature__text { font-size: 13.5px; line-height: 1.85; color: var(--muted); }

/* 推荐仪表组合 */
.rec { position: relative; margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }
.rec__title {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 12px;
}
.rec__item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  color: var(--ink-2);
  padding: 9px 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  margin-bottom: 8px;
}
.rec__item svg { color: var(--red); flex: none; }
.rec__item:last-child { margin-bottom: 0; }

/* ---------------------------------------------------------------- 新闻 */
.news-list { border-top: 1px solid var(--line); }
.news-item {
  display: grid;
  grid-template-columns: 96px 1fr 40px;
  gap: 28px;
  align-items: center;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.3s;
}
.news-item:hover { background: rgba(200, 16, 46, 0.02); }
.news-item__date { border-right: 1px solid var(--line); }
.news-item__day {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1;
}
.news-item__ym { font-size: 11.5px; color: var(--muted); letter-spacing: 0.06em; margin-top: 6px; }
.news-item__cat {
  display: inline-block;
  font-size: 11px;
  color: var(--red);
  background: var(--red-50);
  border-radius: 3px;
  padding: 2px 7px;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.news-item__title {
  font-size: 17.5px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
  transition: color 0.25s;
}
.news-item:hover .news-item__title { color: var(--red); }
.news-item__summary {
  font-size: 13.5px;
  color: var(--muted);
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item__arrow {
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--muted);
  transition: 0.3s var(--ease);
}
.news-item:hover .news-item__arrow {
  border-color: var(--red);
  background: var(--red);
  color: #fff;
  transform: rotate(-45deg);
}

/* ---------------------------------------------------------------- CTA */
.cta {
  position: relative;
  background: var(--red);
  color: #fff;
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.07) 0 1px,
    transparent 1px 14px
  );
}
.cta::after {
  content: "";
  position: absolute;
  right: -140px;
  top: -140px;
  width: 460px;
  height: 460px;
  pointer-events: none;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(255, 255, 255, 0.05), 0 0 0 130px rgba(255, 255, 255, 0.04);
}
.cta__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 66px 0;
}
.cta__title {
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}
.cta__text { font-size: 14.5px; color: rgba(255, 255, 255, 0.82); margin-top: 12px; }
.cta__actions { display: flex; align-items: center; gap: 24px; flex: none; }

/* ---------------------------------------------------------------- 页脚 */
.footer { background: #0c1014; color: rgba(255, 255, 255, 0.5); padding: 64px 0 0; }
.footer__grid {
  display: grid;
  grid-template-columns: 1.45fr 0.92fr 0.92fr 1.12fr 132px;
  gap: 40px;
  padding-bottom: 52px;
}
.footer__col { min-width: 0; }
.footer__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.footer__brand img { flex: none; object-fit: contain; }
.footer__brand img.is-custom { width: auto; height: 36px; max-width: 170px; }
.footer__brand .brand__cn { color: #fff; font-size: 16px; }
.footer__brand .brand__en { color: rgba(255, 255, 255, 0.35); }
.footer__desc { font-size: 13px; line-height: 1.9; max-width: 330px; }
.footer__title {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}
.footer__links { display: grid; gap: 11px; }
.footer__links a { font-size: 13px; transition: color 0.22s; }
.footer__links a:hover { color: var(--red-light); }
.footer__contact { display: grid; gap: 13px; }
.footer__contact li { display: flex; gap: 10px; font-size: 13px; line-height: 1.7; }
.footer__contact svg { color: var(--red-light); flex: none; margin-top: 4px; }
.footer__contact strong {
  display: block;
  font-family: var(--font-num);
  font-size: 17px;
  color: #fff;
  letter-spacing: 0.02em;
}

/* 页脚微信二维码 */
.footer__qr { display: flex; flex-direction: column; }
.footer__qr-card {
  position: relative;
  width: 128px;
  height: 128px;
  padding: 7px;
  border-radius: 5px;
  background: #fff;
  display: grid;
  place-items: center;
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.38);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.footer__qr:hover .footer__qr-card {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.46);
}
.footer__qr-card img { width: 100%; height: 100%; object-fit: contain; }
.footer__qr-card.is-empty { color: var(--red); }
.footer__qr-card::before,
.footer__qr-card::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--red);
  border-radius: 1px;
}
.footer__qr-card::before { top: -5px; left: -5px; border-right: 0; border-bottom: 0; }
.footer__qr-card::after { right: -5px; bottom: -5px; border-left: 0; border-top: 0; }
.footer__qr-text { margin-top: 13px; }
.footer__qr-cap { font-size: 12px; color: rgba(255, 255, 255, 0.62); letter-spacing: 0.04em; white-space: nowrap; }
.footer__qr-id { margin-top: 4px; font-family: var(--font-num); font-size: 11.5px; color: rgba(255, 255, 255, 0.34); }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
}
.footer__bottom a:hover { color: rgba(255, 255, 255, 0.7); }

/* ---------------------------------------------------------------- 内页页头 */
.page-hero {
  position: relative;
  padding: 52px 0 46px;
  background: var(--soft);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(15, 20, 24, 0.045) 1px, transparent 1px);
  background-size: 68px 100%;
  mask-image: linear-gradient(to right, #000, transparent 70%);
  -webkit-mask-image: linear-gradient(to right, #000, transparent 70%);
}
.page-hero__inner { position: relative; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 20px;
}
.breadcrumb a:hover { color: var(--red); }
.breadcrumb span { color: var(--line-strong); }
.page-hero__title {
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.page-hero__desc {
  margin-top: 14px;
  font-size: 15px;
  color: var(--muted);
  max-width: 640px;
}
.page-hero__en {
  position: absolute;
  right: 0;
  bottom: -6px;
  font-family: var(--font-num);
  font-size: clamp(40px, 7vw, 88px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(200, 16, 46, 0.16);
  line-height: 1;
  pointer-events: none;
  white-space: nowrap;
}

/* ---------------------------------------------------------------- 通用分栏 */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.split--media-right { grid-template-columns: 1.05fr 0.95fr; }
.split__body p + p { margin-top: 14px; }
.split__body { font-size: 14.5px; line-height: 1.95; color: var(--body); }

.panel-visual {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, #fbfbfc 0%, #f3f4f6 100%);
  padding: 34px;
  overflow: hidden;
}
.panel-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(15, 20, 24, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 20, 24, 0.04) 1px, transparent 1px);
  background-size: 34px 34px;
}

.kv-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.kv {
  background: #fff;
  padding: 22px 20px;
}
.kv__value {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 600;
  color: var(--red);
  line-height: 1;
}
.kv__label { font-size: 12.5px; color: var(--muted); margin-top: 8px; }

/* ---------------------------------------------------------------- 时间轴 */
.timeline { position: relative; margin-top: 8px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line-strong);
}
.tl-item { position: relative; padding: 0 0 32px 38px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--red);
}
.tl-item::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
}
.tl-year {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.tl-title { font-size: 15px; font-weight: 600; color: var(--ink); margin-top: 4px; }
.tl-text { font-size: 13.5px; color: var(--muted); margin-top: 5px; line-height: 1.8; }

/* ---------------------------------------------------------------- 证书 */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 26px 22px;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s var(--ease);
}
.cert-card:hover { border-color: rgba(200, 16, 46, 0.4); transform: translateY(-3px); }
.cert-card svg { margin: 0 auto 14px; color: var(--red); }
.cert-card__name { font-size: 14.5px; font-weight: 600; color: var(--ink); }
.cert-card__desc { font-size: 12px; color: var(--muted); margin-top: 6px; line-height: 1.7; }

/* ---------------------------------------------------------------- 筛选 */
.filters {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 34px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.filter-group { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-btn {
  height: 38px;
  padding: 0 18px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 3px;
  font-size: 13.5px;
  color: var(--body);
  transition: 0.25s;
}
.filter-btn:hover { border-color: var(--red); color: var(--red); }
.filter-btn.is-active { background: var(--red); border-color: var(--red); color: #fff; font-weight: 600; }
.filter-btn__n { font-family: var(--font-num); font-size: 11px; opacity: 0.6; margin-left: 5px; }

.search-box { position: relative; }
.search-box svg { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); color: var(--muted); }
.search-box input {
  height: 40px;
  width: 240px;
  padding: 0 14px 0 38px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-family: inherit;
  font-size: 13.5px;
  color: var(--ink);
  outline: none;
  transition: border-color 0.25s;
}
.search-box input:focus { border-color: var(--red); }

/* ---------------------------------------------------------------- 表单 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; }
.contact-panel { display: grid; gap: 18px; }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.3s;
}
.contact-item:hover { border-color: rgba(200, 16, 46, 0.35); }
.contact-item__icon {
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 6px;
  background: var(--red-50);
  color: var(--red);
  display: grid;
  place-items: center;
}
.contact-item__label { font-size: 12px; color: var(--muted); letter-spacing: 0.08em; }
.contact-item__value {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 4px;
  line-height: 1.6;
  word-break: break-all;
}
.contact-item__value--num { font-family: var(--font-num); font-size: 19px; letter-spacing: 0.03em; }

.form-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(15, 20, 24, 0.05);
}
.form-card__title { font-size: 20px; font-weight: 700; color: var(--ink); }
.form-card__sub { font-size: 13px; color: var(--muted); margin-top: 6px; margin-bottom: 26px; }

.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-2);
  margin-bottom: 7px;
  letter-spacing: 0.03em;
}
.field label .req { color: var(--red); margin-left: 2px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: #fcfcfd;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  outline: none;
  transition: border-color 0.22s, box-shadow 0.22s, background 0.22s;
}
.field textarea { min-height: 116px; resize: vertical; line-height: 1.7; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--red);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.08);
}
.field input::placeholder,
.field textarea::placeholder { color: #a9afb7; }

.form__foot { display: flex; align-items: center; gap: 16px; margin-top: 8px; flex-wrap: wrap; }
.form__hint { font-size: 12px; color: var(--muted); line-height: 1.7; }
.form__status {
  margin-top: 14px;
  font-size: 13.5px;
  padding: 11px 14px;
  border-radius: 4px;
  display: none;
}
.form__status.is-ok { display: block; background: #f0f9f2; color: #1f7a3d; border: 1px solid #cfe9d7; }
.form__status.is-err { display: block; background: var(--red-50); color: var(--red-dark); border: 1px solid var(--red-100); }

.map-card {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  background: #f4f5f7;
  height: 190px;
}
.map-card svg { width: 100%; height: 100%; }
.map-card__tag {
  position: absolute;
  left: 16px;
  bottom: 14px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 7px 12px;
  font-size: 12px;
  color: var(--ink-2);
}

/* ---------------------------------------------------------------- 弹窗 */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.28s, visibility 0.28s;
}
.modal.is-open { opacity: 1; visibility: visible; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(10, 14, 18, 0.55); backdrop-filter: blur(3px); }
.modal__panel {
  position: relative;
  width: 100%;
  max-width: 820px;
  max-height: 86vh;
  overflow-y: auto;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 80px rgba(10, 14, 18, 0.3);
  transform: translateY(16px) scale(0.99);
  transition: transform 0.32s var(--ease);
}
.modal.is-open .modal__panel { transform: none; }
.modal__head {
  position: sticky;
  top: 0;
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 24px 32px 20px;
  z-index: 2;
}
.modal__eyebrow { font-family: var(--font-num); font-size: 11px; letter-spacing: 0.14em; color: var(--red); }
.modal__title { font-size: 22px; font-weight: 700; color: var(--ink); margin-top: 6px; }
.modal__body { padding: 26px 32px 32px; }
.modal__close {
  position: absolute;
  right: 18px;
  top: 18px;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: #fff;
  color: var(--muted);
  display: grid;
  place-items: center;
  transition: 0.25s;
}
.modal__close:hover { background: var(--red); border-color: var(--red); color: #fff; transform: rotate(90deg); }

.spec-table { width: 100%; border-collapse: collapse; margin-top: 18px; font-size: 13.5px; }
.spec-table th, .spec-table td {
  text-align: left;
  padding: 11px 14px;
  border: 1px solid var(--line);
}
.spec-table th {
  background: var(--soft);
  color: var(--ink-2);
  font-weight: 500;
  width: 34%;
  white-space: nowrap;
}
.spec-table td { color: var(--body); }

.modal__section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.08em;
  margin: 26px 0 10px;
  padding-left: 10px;
  border-left: 2px solid var(--red);
}
.modal__text { font-size: 14px; line-height: 1.95; color: var(--body); }
.modal__actions { display: flex; gap: 12px; margin-top: 26px; flex-wrap: wrap; }

/* 产品弹窗 · 微信二维码（点击「联系工程师」展开） */
.modal__qr {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 20px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #fff, var(--soft));
  box-shadow: 0 10px 26px rgba(15, 20, 24, 0.05);
  animation: qrIn 0.32s var(--ease) both;
}
@keyframes qrIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}
.modal__qr-card {
  flex: none;
  width: 136px;
  height: 136px;
  padding: 8px;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 6px 16px rgba(15, 20, 24, 0.07);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal__qr-card img { width: 100%; height: 100%; object-fit: contain; display: block; image-rendering: pixelated; }
.modal__qr-body { min-width: 0; }
.modal__qr-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.modal__qr-desc { margin: 8px 0 0; font-size: 13.5px; line-height: 1.85; color: var(--body); }
.modal__qr-id { margin-top: 10px; font-size: 12.5px; color: var(--muted); }
.modal__qr-id b { color: var(--ink-2); font-family: var(--font-num); font-weight: 600; }
.modal__qr-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--red);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease);
}
.modal__qr-link:hover { border-color: var(--red); }
.modal__qr-link svg { transition: transform 0.25s var(--ease); }
.modal__qr-link:hover svg { transform: translateX(3px); }
.btn.is-active { border-color: var(--red); color: var(--red); }
.btn.is-active:hover { background: var(--red-50); color: var(--red); }

/* ---------------------------------------------------------------- 内容页排版 */
.article { max-width: 820px; margin: 0 auto; }
.article__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12.5px;
  color: var(--muted);
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}
.article__meta span { display: inline-flex; align-items: center; gap: 6px; }
.article__body p { font-size: 15.5px; line-height: 2.05; color: var(--body); margin-bottom: 18px; }
.article__body h3 { font-size: 18px; color: var(--ink); margin: 30px 0 12px; }

.notice {
  border-left: 3px solid var(--red);
  background: var(--red-50);
  padding: 16px 20px;
  border-radius: 0 4px 4px 0;
  font-size: 13.5px;
  color: var(--red-dark);
  line-height: 1.85;
}

/* ---------------------------------------------------------------- 空态 */
.empty {
  padding: 70px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
}

/* ---------------------------------------------------------------- 动效 */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.75s var(--ease), transform 0.75s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .needle { animation: none; }
  .dot-live { animation: none; }
}

/* ---------------------------------------------------------------- 响应式 */
@media (max-width: 1080px) {
  .container { padding: 0 28px; }
  .nav__link { padding: 10px 12px; font-size: 14.5px; }
  .header__tel { display: none; }
  .hero__grid { gap: 40px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .feature { padding: 28px 24px 0 0; }
  .feature + .feature:nth-child(3) { border-left: none; padding-left: 0; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 36px 28px; }
  .footer__about { grid-column: 1 / -1; }
  .footer__qr {
    grid-column: auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding-top: 4px;
  }
  .footer__qr-card { width: 120px; height: 120px; }
  .footer__qr-text { margin-top: 12px; }
  .page-hero__en { display: none; }
}

@media (max-width: 860px) {
  .section { padding: 68px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 18px; margin-bottom: 36px; }
  .nav, .header__actions .btn { display: none; }
  .nav-toggle { display: block; }
  .hero { padding: 52px 0 48px; }
  .hero__grid { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { order: -1; }
  .gauge-wrap { max-width: 320px; }
  .float-card--tl { left: 0; }
  .float-card--br { right: 0; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 24px 0; margin-top: 44px; }
  .stat:nth-child(3) { border-left: none; padding-left: 0; }
  .split { grid-template-columns: 1fr; gap: 34px; }
  .contact-grid { grid-template-columns: 1fr; gap: 34px; }
  .cta__inner { flex-direction: column; align-items: flex-start; gap: 26px; padding: 52px 0; }
  .cta__actions { gap: 18px; }
  .news-item { grid-template-columns: 72px 1fr; gap: 18px; }
  .news-item__arrow { display: none; }
  .form-card { padding: 26px 22px; }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 24px; padding-bottom: 42px; }
  .footer__about { grid-column: 1 / -1; }
  .footer__col--contact { grid-column: 1 / -1; }
  .footer__qr { grid-column: 1 / -1; flex-direction: row; align-items: center; gap: 18px; padding-top: 0; }
  .footer__qr-card { width: 104px; height: 104px; }
  .footer__qr-text { margin-top: 0; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (max-width: 560px) {
  .container { padding: 0 20px; }
  .product-grid, .features, .cert-grid { grid-template-columns: 1fr; }
  .feature { padding: 24px 0 0; border-left: none !important; }
  .feature + .feature { border-top: 1px solid var(--line); }
  .form__row { grid-template-columns: 1fr; }
  .hero__actions .btn { flex: 1 1 100%; }
  .modal { padding: 0; }
  .modal__panel { max-height: 100vh; border-radius: 0; height: 100%; }
  .modal__head { padding: 20px 20px 16px; }
  .modal__body { padding: 20px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { padding-right: 12px; }
  .stat + .stat { padding-left: 16px; }
  .search-box input { width: 100%; }
  .filters { flex-direction: column; align-items: stretch; }
  .kv-grid { grid-template-columns: 1fr; }
  .modal__qr { flex-direction: column; align-items: flex-start; gap: 18px; padding: 18px; }
  .modal__qr-card { width: 122px; height: 122px; }
  .footer { padding-top: 48px; }
  .footer__grid { gap: 28px 18px; }
  .footer__title { margin-bottom: 14px; }
  .footer__links { gap: 9px; }
}

/* ---------------------------------------------------------------- 资讯页布局 */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 56px;
  align-items: start;
}
.side-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  background: #fff;
}
.side-card + .side-card { margin-top: 20px; }
.side-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 14px;
  padding-left: 10px;
  border-left: 2px solid var(--red);
  line-height: 1.4;
}
.side-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  font-size: 13.5px;
  color: var(--body);
  border-bottom: 1px dashed var(--line);
  transition: color 0.22s;
}
.side-list a:last-child { border-bottom: none; }
.side-list a span { font-family: var(--font-num); font-size: 12px; color: var(--muted); }
.side-list a:hover { color: var(--red); }

@media (max-width: 860px) {
  .news-layout { grid-template-columns: 1fr; gap: 34px; }
}

/* ---------------------------------------------------------------- 选型页 */
.sel-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.86fr);
  gap: 40px;
  align-items: start;
}

.sel-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 32px 34px 24px;
}

.sel-step { padding-bottom: 30px; }
.sel-step + .sel-step { border-top: 1px solid var(--line); padding-top: 30px; }
.sel-step__head { display: flex; gap: 18px; align-items: flex-start; margin-bottom: 20px; }
.sel-step__no {
  flex: none;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--red);
  padding-top: 5px;
}
.sel-step__title { font-size: 18px; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; line-height: 1.4; }
.sel-step__hint { font-size: 13px; color: var(--muted); margin-top: 5px; }

.sel-cats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.sel-cat {
  display: flex;
  flex-direction: column;
  gap: 7px;
  text-align: left;
  padding: 14px 15px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--muted);
  transition: border-color 0.22s, background 0.22s, color 0.22s, box-shadow 0.22s;
}
.sel-cat:hover { border-color: var(--red); color: var(--red); }
.sel-cat svg { color: var(--muted); transition: color 0.22s; }
.sel-cat:hover svg { color: var(--red); }
.sel-cat__name { font-size: 14px; font-weight: 600; color: var(--ink); transition: color 0.22s; }
.sel-cat__count { font-family: var(--font-num); font-size: 11px; color: var(--muted); letter-spacing: 0.02em; }
.sel-cat.is-active { border-color: var(--red); background: var(--red-50); box-shadow: inset 0 0 0 1px var(--red); }
.sel-cat.is-active svg,
.sel-cat.is-active .sel-cat__count { color: var(--red); }
.sel-cat.is-active .sel-cat__name { color: var(--red); }

.sel-chips { display: flex; flex-wrap: wrap; gap: 9px; }
.sel-chip {
  height: 36px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  font-size: 13px;
  color: var(--body);
  transition: 0.22s;
}
.sel-chip:hover { border-color: var(--red); color: var(--red); }
.sel-chip.is-active { background: var(--red); border-color: var(--red); color: #fff; font-weight: 500; }

/* 型号编码 */
.sel-model { display: grid; gap: 18px; }
.sel-model__products {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}
.sel-prod {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  padding: 9px 14px;
  min-width: 132px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  text-align: left;
  cursor: pointer;
  transition: 0.22s;
}
.sel-prod:hover { border-color: var(--red); }
.sel-prod__name { font-size: 13px; font-weight: 600; color: var(--ink); line-height: 1.35; }
.sel-prod__base {
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.sel-prod.is-active { border-color: var(--red); background: var(--red-50); }
.sel-prod.is-active .sel-prod__name { color: var(--red); }
.sel-prod.is-active .sel-prod__base { color: var(--red); opacity: 0.78; }
.sel-model__group + .sel-model__group { border-top: 1px dashed var(--line); padding-top: 18px; }
.sel-model__none { margin: 2px 0 0; padding: 13px 16px; border: 1px dashed var(--line); border-radius: 10px; background: #fafafa; font-size: 13px; color: var(--muted); line-height: 1.7; }
.sel-model__head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.sel-model__name { font-size: 13px; font-weight: 600; color: var(--ink-2); letter-spacing: 0.01em; }
.sel-model__pos {
  font-family: var(--font-num);
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.1em;
}
.sel-chip--code { display: inline-flex; align-items: center; gap: 8px; padding-right: 9px; }
.sel-chip__code {
  font-family: var(--font-num);
  font-style: normal;
  font-size: 11px;
  line-height: 1.5;
  padding: 0 6px;
  border-radius: 3px;
  background: var(--soft);
  color: var(--muted);
  transition: 0.22s;
}
.sel-chip:hover .sel-chip__code { background: var(--red-50); color: var(--red); }
.sel-chip.is-active .sel-chip__code { background: rgba(255, 255, 255, 0.24); color: #fff; }

.sel-form__foot {
  display: flex;
  align-items: center;
  gap: 18px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.sel-form__note { font-size: 12.5px; color: var(--muted); line-height: 1.7; }

.sel-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 24px 24px 22px;
  box-shadow: 0 14px 32px rgba(15, 20, 24, 0.06);
}
.sel-panel__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.sel-panel__eyebrow { font-size: 11px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.sel-panel__count { font-family: var(--font-num); font-size: 12px; font-weight: 600; color: var(--red); white-space: nowrap; }

.sel-result { padding-top: 4px; }

.sel-model-result {
  margin-top: 14px;
  padding: 13px 14px 12px;
  border: 1px solid var(--red-100);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--red-50), #fff);
}
.sel-model-result__head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.sel-model-result__label {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
}
.sel-model-result__meta { font-size: 11px; color: var(--muted); white-space: nowrap; }
.sel-model-result__code {
  margin-top: 7px;
  font-family: var(--font-num);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
  line-height: 1.5;
  word-break: break-all;
}
.sel-item { padding: 16px 0 14px; border-bottom: 1px dashed var(--line); }
.sel-item:last-child { border-bottom: none; padding-bottom: 2px; }
.sel-item__head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.sel-item__model { font-family: var(--font-num); font-size: 13.5px; font-weight: 700; color: var(--red); letter-spacing: 0.01em; }
.sel-item__cat { flex: none; font-size: 11.5px; color: var(--muted); }
.sel-item__name { font-size: 15px; font-weight: 600; color: var(--ink); margin-top: 4px; line-height: 1.5; }
.sel-item__specs { font-size: 12.5px; color: var(--muted); margin-top: 6px; line-height: 1.65; }
.sel-item__reasons { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.sel-item__reason { font-size: 11px; color: var(--red); background: var(--red-50); padding: 2px 8px; border-radius: 3px; }
.sel-item__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-2);
  margin-top: 10px;
  transition: color 0.22s;
}
.sel-item__link:hover { color: var(--red); }
.sel-item__link svg { transition: transform 0.28s var(--ease); }
.sel-item__link:hover svg { transform: translateX(3px); }

.sel-empty { text-align: center; padding: 38px 10px 32px; }
.sel-empty__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
}
.sel-empty__title { font-size: 14.5px; font-weight: 600; color: var(--ink-2); }
.sel-empty__text { font-size: 12.5px; color: var(--muted); margin-top: 6px; line-height: 1.7; }

.sel-summary {
  margin-top: 14px;
  padding: 12px 14px;
  background: var(--soft);
  border-left: 2px solid var(--red);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--body);
  word-break: break-word;
}
.sel-summary strong { color: var(--ink); font-weight: 600; }
.sel-panel__actions { display: flex; gap: 10px; margin-top: 18px; }
.sel-panel__actions .btn { flex: 1; padding: 0 8px; }
.sel-panel__tip { font-size: 11.5px; color: var(--muted); margin-top: 12px; line-height: 1.7; }

@media (max-width: 1080px) {
  .sel-layout { grid-template-columns: 1fr; gap: 26px; }
  .sel-panel { position: static; box-shadow: none; }
}

@media (max-width: 860px) {
  .sel-form { padding: 26px 22px 20px; }
  .sel-cats { grid-template-columns: repeat(2, 1fr); }
  .sel-form__foot { flex-direction: column; align-items: flex-start; gap: 12px; }
}

@media (max-width: 560px) {
  .sel-panel__actions { flex-direction: column; }
  .sel-step__head { gap: 12px; }
  .sel-step__title { font-size: 17px; }
}

/* ---------------------------------------------------------------- 回到顶部 */
.back-top {
  position: fixed;
  right: 26px;
  bottom: 34px;
  z-index: 80;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: #fff;
  color: var(--red);
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(15, 20, 24, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px) scale(0.9);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease),
    background 0.24s, color 0.24s, border-color 0.24s, box-shadow 0.24s, visibility 0.28s;
}
.back-top.is-on { opacity: 1; visibility: visible; transform: none; }
.back-top:hover {
  background: var(--red);
  border-color: var(--red);
  color: #fff;
  box-shadow: 0 12px 28px rgba(200, 16, 46, 0.26);
  transform: translateY(-3px);
}
.back-top:active { transform: translateY(-1px) scale(0.97); }
.back-top:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; }
.back-top svg { transition: transform 0.26s var(--ease); }
.back-top:hover svg { transform: translateY(-2px); }

.back-top__tip {
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  padding: 5px 10px;
  border-radius: 5px;
  background: var(--ink);
  color: #fff;
  font-size: 12px;
  line-height: 1.5;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(6px);
  transition: opacity 0.24s, transform 0.24s var(--ease);
}
.back-top__tip::after {
  content: "";
  position: absolute;
  left: 100%;
  top: 50%;
  border: 5px solid transparent;
  border-left-color: var(--ink);
  transform: translateY(-50%);
}
.back-top:hover .back-top__tip { opacity: 1; transform: translateY(-50%); }

@media (max-width: 860px) {
  .back-top { right: 16px; bottom: 20px; width: 42px; height: 42px; }
  .back-top__tip { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .back-top { transition: opacity 0.2s; transform: none; }
  .back-top:hover { transform: none; }
}

/* ---------------------------------------------------------------- 首页产品分类切换 */
.home-cats {
  display: flex;
  flex-wrap: wrap;
  gap: 0 30px;
  margin: 0 0 28px;
  border-bottom: 1px solid var(--line);
}
.hcat {
  position: relative;
  padding: 0 1px 14px;
  border: 0;
  background: none;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.4;
  color: var(--body);
  cursor: pointer;
  transition: color 0.22s;
}
.hcat::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--ease);
}
.hcat:hover { color: var(--ink); }
.hcat.is-active { color: var(--red); font-weight: 600; }
.hcat.is-active::after { transform: scaleX(1); }
.hcat:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; border-radius: 2px; }
.hcat__n {
  margin-left: 6px;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 400;
  color: var(--muted);
  transition: color 0.22s;
}
.hcat.is-active .hcat__n { color: var(--red); opacity: 0.72; }

.home-prod-empty {
  grid-column: 1 / -1;
  padding: 52px 0;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}
.home-prod-empty a { color: var(--red); text-decoration: none; }
.home-prod-empty a:hover { text-decoration: underline; }

.home-prod-more {
  margin: 22px 0 0;
  text-align: right;
  font-size: 12.5px;
  color: var(--muted);
}
.home-prod-more a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-left: 4px;
  color: var(--red);
  text-decoration: none;
}
.home-prod-more a svg { transition: transform 0.26s var(--ease); }
.home-prod-more a:hover { text-decoration: underline; }
.home-prod-more a:hover svg { transform: translateX(3px); }

@media (max-width: 860px) {
  .home-cats {
    flex-wrap: nowrap;
    gap: 0 22px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    margin-bottom: 22px;
  }
  .home-cats::-webkit-scrollbar { display: none; }
  .hcat { flex: none; white-space: nowrap; font-size: 13.5px; }
  .home-prod-more { text-align: left; }
}

/* ---------------------------------------------------------------- 站内图片保护
   禁止拖拽 / 选中 / 长按呼出系统菜单（另存图片） */
img {
  -webkit-user-drag: none;
  user-select: none;
  -webkit-touch-callout: none;
}

/* ==========================================================================
   SEO：服务端渲染页（产品详情 / 分类 / 新闻）与站内链接索引
   这些页面由服务端直接输出正文，爬虫无需执行 JS 也能读到完整内容
   ========================================================================== */

a.pcard { color: inherit; text-decoration: none; }
a.pcard:hover .pcard__name { color: var(--red); }

.btn--ghost { border-color: transparent; background: var(--soft); color: var(--body); }
.btn--ghost:hover { border-color: var(--line-strong); background: #fff; color: var(--ink); }

.section-head__title,
.seo-h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 26px;
}

/* 产品详情 */
.pdp {
  display: grid;
  grid-template-columns: minmax(0, 440px) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}
.pdp__media {
  margin: 0;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 26px;
}
.pdp__media img { width: 100%; height: auto; display: block; }
.pdp__media figcaption {
  margin-top: 14px;
  font-size: 12.5px;
  color: var(--muted);
  text-align: center;
}
.pdp__model {
  font-size: 15px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.04em;
  margin-left: 8px;
}
.pdp__body { min-width: 0; }
.pdp__h2 { font-size: 19px; margin: 30px 0 12px; color: var(--ink); }
.pdp__h2:first-of-type { margin-top: 18px; }
.pdp__text { color: var(--body); line-height: 1.95; font-size: 15.5px; margin: 0; }
.pdp__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* 分类入口 */
.seo-cats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 12px;
}
.seo-cats__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 15px;
  text-decoration: none;
  transition: border-color 0.25s, color 0.25s, transform 0.25s var(--ease);
}
.seo-cats__item span { color: var(--muted); font-size: 12.5px; }
.seo-cats__item:hover { border-color: var(--red); color: var(--red); transform: translateY(-2px); }

/* 站内链接索引（产品页/新闻页底部） */
.seo-index {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 36px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.seo-index h2 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink);
  margin: 0 0 14px;
}
.seo-index ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}
.seo-index li { font-size: 13.5px; }
.seo-index a { color: var(--muted); text-decoration: none; transition: color 0.2s; }
.seo-index a:hover { color: var(--red); }

/* 新闻详情 */
.seo-article { max-width: 820px; }
.seo-article p {
  font-size: 16px;
  line-height: 2.05;
  color: var(--body);
  margin: 0 0 18px;
}
.seo-news-list { list-style: none; margin: 0 0 22px; padding: 0; }
.seo-news-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.seo-news-list a { color: var(--ink); text-decoration: none; }
.seo-news-list a:hover { color: var(--red); }
.seo-news-list span { color: var(--muted); font-size: 12.5px; white-space: nowrap; }
.seo-back a { color: var(--red); font-size: 14px; text-decoration: none; }
.seo-intro { color: var(--body); font-size: 15.5px; line-height: 1.9; margin: 0 0 28px; }

/* 服务端页脚（含企业 NAP 信息） */
.seo-footer {
  margin-top: 48px;
  padding: 44px 0 24px;
  background: var(--soft);
  border-top: 1px solid var(--line);
}
.seo-footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
}
.seo-footer__brand strong { font-size: 17px; color: var(--ink); }
.seo-footer__brand p { color: var(--muted); font-size: 13.5px; margin: 8px 0 16px; }
.seo-footer__nav { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.seo-footer__nav a { color: var(--body); font-size: 13.5px; text-decoration: none; }
.seo-footer__nav a:hover { color: var(--red); }
.seo-footer__contact p {
  display: flex;
  gap: 12px;
  margin: 0 0 10px;
  font-size: 13.5px;
  color: var(--body);
}
.seo-footer__contact span { color: var(--muted); min-width: 36px; }
.seo-footer__contact a { color: var(--ink); text-decoration: none; }
.seo-footer__contact a:hover { color: var(--red); }
.seo-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}

@media (max-width: 1024px) {
  .pdp { grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: 36px; }
  .seo-index { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 860px) {
  .pdp { grid-template-columns: 1fr; gap: 26px; }
  .seo-index { grid-template-columns: 1fr; gap: 26px; margin-top: 40px; padding-top: 28px; }
  .seo-footer__top { grid-template-columns: 1fr; gap: 22px; }
  .section-head__title, .seo-h2 { font-size: 21px; }
  .seo-article p { font-size: 15.5px; }
  .pdp__actions .btn { flex: 1 1 auto; }
}