@charset "utf-8";
/* =========================================================================
   青岛铭泰机床（mingtaiqd.com）前台样式表
   设计语言：德系精密工业风
   象牙白底 + 石墨黑 + 精密红点缀，直线网格、大留白、参数表格化
   ========================================================================= */

/* ---------- 1. 设计变量 ---------- */
:root {
  /* 石墨黑系 —— 主文字与深色区块 */
  --ink: #17191C;
  --ink-2: #2A2E33;
  --ink-3: #4A5058;

  /* 精密红 —— 仅用于行动点、章节序号、关键标记，占比严格克制 */
  --red: #C8102E;
  --red-dark: #A00D25;
  --red-soft: #FBF0F2;

  /* 纸白系 —— 页面底色 */
  --paper: #FAFAF8;
  --paper-2: #F3F3EF;
  --white: #FFFFFF;

  /* 灰阶 —— 细线与辅助文字 */
  --line: #E3E3DD;
  --line-2: #CFCFC7;
  --line-strong: #B8B8AF;
  --gray: #74797F;
  --gray-2: #9AA0A6;

  /* 深色区块内文字 */
  --on-dark: #A8ADB4;
  --on-dark-dim: #7E858D;
  --on-dark-hi: #E8EAEC;
  --on-dark-line: rgba(255, 255, 255, .12);

  /* 尺寸 */
  --wrap: 1400px;
  --gap: 32px;
  --radius: 2px;
  --shadow-sm: 0 1px 2px rgba(23, 25, 28, .04);
  --shadow: 0 8px 28px rgba(23, 25, 28, .07);
  --shadow-lg: 0 22px 60px rgba(23, 25, 28, .13);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-num: "SF Mono", "Roboto Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

/* ---------- 2. 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

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

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-3);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; transition: color .22s ease, background-color .22s ease, border-color .22s ease; }
a:hover { color: var(--red); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5 { color: var(--ink); font-weight: 600; line-height: 1.28; letter-spacing: -.01em; }
b, strong { font-weight: 600; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }
::selection { background: var(--red); color: #fff; }

.container { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }

/* 数字统一等宽，强化工程感 */
.num, .stat__num, .spec-val, .meta-date { font-variant-numeric: tabular-nums; }

/* ---------- 3. 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 26px;
  height: 46px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .04em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: all .22s ease;
  white-space: nowrap;
  cursor: pointer;
}
.btn svg { width: 16px; height: 16px; fill: currentColor; }

.btn--primary { background: var(--ink); color: #fff; }
.btn--primary:hover { background: var(--red); color: #fff; }

.btn--red { background: var(--red); color: #fff; }
.btn--red:hover { background: var(--red-dark); color: #fff; }

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

.btn--ghost { border-color: rgba(255, 255, 255, .38); color: #fff; }
.btn--ghost:hover { border-color: #fff; background: #fff; color: var(--ink); }

.btn--sm { height: 38px; padding: 0 18px; font-size: 13px; }
.btn--block { width: 100%; }
.btn--lg { height: 54px; padding: 0 34px; font-size: 15px; }

/* 文字箭头链接 */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: .02em;
}
.link-arrow::after {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--red);
  transition: width .25s ease;
}
.link-arrow:hover { color: var(--red); }
.link-arrow:hover::after { width: 30px; }

/* ---------- 4. 顶部信息条 ---------- */
.topbar {
  background: var(--ink);
  color: var(--on-dark);
  font-size: 12.5px;
  line-height: 1;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 38px;
}
.topbar__left, .topbar__right { display: flex; align-items: center; gap: 22px; }
.topbar__item { display: inline-flex; align-items: center; gap: 7px; color: var(--on-dark); }
.topbar__item svg { width: 13px; height: 13px; fill: var(--on-dark-dim); flex: none; }
.topbar__item:hover { color: #fff; }

/* 语言切换 */
.lang { display: inline-flex; align-items: center; gap: 9px; }
.lang a { color: var(--on-dark); font-size: 12.5px; letter-spacing: .04em; }
.lang a:hover { color: #fff; }
.lang a.is-on { color: #fff; position: relative; }
.lang a.is-on::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -5px;
  height: 1px;
  background: var(--red);
}
.lang__sep { color: rgba(255, 255, 255, .22); }

/* ---------- 5. 头部与导航 ---------- */
.header {
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 120;
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 26px;
}

.logo { display: flex; align-items: center; gap: 12px; flex: none; }
.logo__img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  flex: none;
}
.logo__img--chip {
  width: 48px;
  height: 48px;
  padding: 4px;
  background: #fff;
  border-radius: 6px;
  box-sizing: border-box;
}
.drawer__head .logo__img { width: 38px; height: 38px; }
.logo__mark {
  width: 44px;
  height: 44px;
  background: var(--red);
  color: #fff;
  font-size: 25px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  letter-spacing: 0;
  position: relative;
}
.logo__mark::after {
  content: "";
  position: absolute;
  right: 0; bottom: 0;
  width: 10px; height: 10px;
  background: var(--ink);
}
.logo__mark--lg { width: 48px; height: 48px; }
.logo__mark--lg::after { background: rgba(255, 255, 255, .18); }
.logo__text { display: flex; flex-direction: column; line-height: 1.16; }
.logo__name { font-size: 18px; font-weight: 700; color: var(--ink); letter-spacing: .01em; }
.logo__en { font-size: 10px; letter-spacing: .18em; color: var(--gray-2); text-transform: uppercase; }

.nav { flex: 1; display: flex; justify-content: center; }
.nav__list { display: flex; align-items: center; gap: 4px; }
.nav__item { position: relative; flex: none; }
.nav__link {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 76px;
  padding: 0 13px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink-2);
  white-space: nowrap;
  position: relative;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 0;
  height: 2px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .26s ease;
}
.nav__item:hover .nav__link, .nav__item.is-active .nav__link { color: var(--ink); }
.nav__item:hover .nav__link::after, .nav__item.is-active .nav__link::after { transform: scaleX(1); }

.nav__caret {
  width: 5px; height: 5px;
  border-right: 1px solid var(--gray-2);
  border-bottom: 1px solid var(--gray-2);
  transform: rotate(45deg) translateY(-1px);
  transition: transform .22s ease;
}
.nav__item:hover .nav__caret { border-color: var(--red); transform: rotate(225deg) translateY(-2px); }

/* 下拉面板 */
.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 268px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transition: all .24s ease;
  display: grid;
  gap: 1px;
}
.nav__item:hover .nav__dropdown { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav__dropdown a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 14px;
  font-size: 14px;
  color: var(--ink-3);
  border-left: 2px solid transparent;
}
.nav__dropdown a:hover { background: var(--paper-2); color: var(--ink); border-left-color: var(--red); }

.header__cta { display: flex; align-items: center; gap: 18px; flex: none; }
.header__phone { display: flex; align-items: center; gap: 10px; }
.header__phone-icon svg { width: 24px; height: 24px; fill: var(--red); }
.header__phone-label { display: block; font-size: 11px; color: var(--gray-2); line-height: 1.2; letter-spacing: .06em; }
.header__phone-num { display: block; font-size: 17px; font-weight: 700; color: var(--ink); line-height: 1.25; letter-spacing: .01em; }

.burger { display: none; width: 40px; height: 40px; flex-direction: column; justify-content: center; gap: 5px; padding: 0 8px; }
.burger span { display: block; height: 1.5px; background: var(--ink); transition: all .25s ease; }

/* ---------- 6. 移动端抽屉 ---------- */
.drawer { position: fixed; inset: 0; z-index: 300; visibility: hidden; }
.drawer.is-open { visibility: visible; }
.drawer__mask {
  position: absolute; inset: 0;
  background: rgba(23, 25, 28, .55);
  opacity: 0;
  transition: opacity .28s ease;
}
.drawer.is-open .drawer__mask { opacity: 1; }
.drawer__panel {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: min(88vw, 400px);
  background: var(--paper);
  transform: translateX(100%);
  transition: transform .32s cubic-bezier(.4, 0, .2, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.drawer.is-open .drawer__panel { transform: translateX(0); }
.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.drawer__head .logo__mark { width: 36px; height: 36px; font-size: 20px; }
.drawer__close { font-size: 20px; color: var(--gray); padding: 4px 8px; }
.drawer__nav { flex: 1; padding: 6px 0; }
.drawer__nav > li { border-bottom: 1px solid var(--line); }
.drawer__nav > li > a, .drawer__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 15px 20px;
  font-size: 15.5px;
  font-weight: 500;
  color: var(--ink-2);
  text-align: left;
}
.drawer__sub { display: none; background: var(--paper-2); padding: 6px 0; }
.drawer__sub.is-open { display: block; }
.drawer__sub a { display: block; padding: 11px 20px 11px 34px; font-size: 14px; color: var(--ink-3); border-bottom: 1px solid var(--line); }
.drawer__sub a:last-child { border-bottom: 0; }
.drawer__foot { padding: 20px; background: #fff; border-top: 1px solid var(--line); display: grid; gap: 10px; }
.drawer__foot p { font-size: 13px; color: var(--gray); line-height: 1.7; }

/* ---------- 7. 通用区块 ---------- */
.section { padding: 96px 0; }
.section--tight { padding: 68px 0; }
.section--alt { background: var(--white); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section--paper { background: var(--paper-2); }
.section--dark { background: var(--ink); color: var(--on-dark); }
.section--dark h2, .section--dark h3 { color: #fff; }

/* 章节标题 */
.head { margin-bottom: 52px; max-width: 780px; }
.head--center { text-align: center; margin-left: auto; margin-right: auto; }
.head__en {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 14px;
}
.head__en::before { content: ""; width: 26px; height: 1px; background: var(--red); }
.head--center .head__en::before { display: none; }
.head__title { font-size: 38px; letter-spacing: -.02em; }
.head__desc { margin-top: 16px; font-size: 15.5px; color: var(--gray); line-height: 1.85; }
.section--dark .head__desc { color: var(--on-dark); }

/* ---------- 8. 首页 Hero ---------- */
.hero { position: relative; background: var(--ink); overflow: hidden; }
.hero__slides { position: absolute; inset: 0; }
.hero__slide {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.1s ease;
  transform: scale(1.04);
}
.hero__slide.is-active { opacity: 1; animation: heroZoom 7s ease-out forwards; }
@keyframes heroZoom { from { transform: scale(1.04); } to { transform: scale(1); } }
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(17, 19, 22, .93) 0%, rgba(17, 19, 22, .82) 42%, rgba(17, 19, 22, .42) 100%);
}
.hero__inner { position: relative; z-index: 3; padding-top: 128px; padding-bottom: 132px; }

/* 工程图纸感的网格底纹 */
.hero__grid {
  position: absolute; inset: 0; z-index: 2;
  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: 76px 76px;
  pointer-events: none;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 8px 12px;
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .05);
  color: #fff;
  font-size: 12.5px;
  letter-spacing: .06em;
  margin-bottom: 26px;
}
.hero__badge i { width: 6px; height: 6px; background: var(--red); display: block; flex: none; }

.hero__title {
  font-size: 56px;
  line-height: 1.16;
  color: #fff;
  letter-spacing: -.025em;
  font-weight: 700;
  max-width: 15em;
}
.hero__title em {
  font-style: normal;
  color: #fff;
  position: relative;
  display: inline-block;
}
.hero__title em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 4px;
  height: 3px;
  background: var(--red);
}
.hero__desc {
  margin-top: 24px;
  max-width: 40em;
  font-size: 16.5px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .78);
}
.hero__actions { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 14px; }

/* 轮播控制组：箭头 + 圆点（右下角） */
.hero__ctrl {
  position: absolute;
  z-index: 5;
  right: 28px;
  bottom: 128px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
}
.hero__arrows { display: flex; gap: 10px; }
.hero__arrow {
  width: 46px; height: 46px;
  padding: 0;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, .55);
  border-radius: 50%;
  background: rgba(10, 12, 16, .5);
  color: #fff;
  cursor: pointer;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: background .25s ease, border-color .25s ease, transform .2s ease;
}
.hero__arrow:hover { background: var(--red); border-color: var(--red); }
.hero__arrow:active { transform: scale(.93); }
.hero__arrow:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.hero__arrow svg {
  width: 20px; height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hero__dots {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.hero__dot {
  width: 26px; height: 2px;
  background: rgba(255, 255, 255, .3);
  transition: all .3s ease;
}
.hero__dot.is-active { background: var(--red); width: 42px; }

/* 关键指标条 */
.metrics {
  position: relative;
  z-index: 4;
  background: var(--ink-2);
  border-top: 1px solid rgba(255, 255, 255, .08);
}
.metrics__inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.metric {
  padding: 30px 28px;
  border-right: 1px solid rgba(255, 255, 255, .08);
  text-align: center;
}
.metric:last-child { border-right: 0; }
.metric__num {
  display: flex;
  align-items: baseline;
  justify-content: center;
  font-size: 38px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
}
.metric__num i { font-style: normal; font-size: 15px; color: var(--red); margin-left: 4px; font-weight: 600; }
.metric__label { display: block; margin-top: 10px; font-size: 13px; color: var(--on-dark-dim); letter-spacing: .04em; }

/* ---------- 9. 产品系列网格 ---------- */
.series-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.series-card {
  --pad-y: 0px;
  --pad-x: 0px;
  background: var(--white);
  border: 1px solid var(--line);
  padding: var(--pad-y) var(--pad-x) 26px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: background .25s ease, border-color .25s ease;
}
.series-card__media {
  display: block;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--white);
  margin-bottom: 18px;
}
.series-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .45s ease; }
.series-card__media:hover img { transform: scale(1.045); }
/* 详情页型号行双语（lang class 方案，避免 if 解析链差异） */
.detail__model .dm-en { display: none; }
.detail__model.lang-en .dm-cn { display: none; }
.detail__model.lang-en .dm-en { display: inline; }
.series-card__body { padding: 4px 26px 0; display: flex; flex-direction: column; flex: 1; }
.series-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 3px;
  background: var(--red);
  transition: width .32s ease;
  z-index: 1;
}
.series-card:hover { background: var(--white); border-color: var(--line-2); }
.series-card:hover::before { width: 100%; }
.series-card__idx {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--line-strong);
  letter-spacing: .1em;
  margin-bottom: 14px;
}
.series-card__title { font-size: 19px; margin-bottom: 6px; }
.series-card__en { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--gray-2); margin-bottom: 18px; }
.series-card__subs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.series-card__sub {
  font-size: 12.5px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  color: var(--ink-3);
  background: var(--paper);
  transition: all .2s ease;
}
.series-card__sub:hover { border-color: var(--red); color: var(--red); background: var(--red-soft); }
.series-card__more { margin-top: auto; }

/* ---------- 10. 图文分栏（关于） ---------- */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.split--rev .split__media { order: 2; }
.split__media { position: relative; }
.split__media img { width: 100%; border: 1px solid var(--line); }
.split__media::after {
  content: "";
  position: absolute;
  right: -14px; bottom: -14px;
  width: 108px; height: 108px;
  border-right: 2px solid var(--red);
  border-bottom: 2px solid var(--red);
  z-index: -1;
}
.split__badge {
  position: absolute;
  left: 0; bottom: 0;
  background: var(--ink);
  color: #fff;
  padding: 20px 26px;
  border-left: 3px solid var(--red);
}
.split__badge b { display: block; font-size: 34px; line-height: 1; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.split__badge span { display: block; margin-top: 6px; font-size: 12.5px; color: var(--on-dark); letter-spacing: .05em; }

.check-list { display: grid; gap: 13px; margin: 26px 0 32px; }
.check-list li { display: flex; align-items: flex-start; gap: 11px; font-size: 15px; color: var(--ink-3); }
.check-list li::before {
  content: "";
  flex: none;
  width: 7px; height: 7px;
  margin-top: 9px;
  background: var(--red);
}

/* ---------- 11. 优势卡片（编号制） ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--on-dark-line); border: 1px solid var(--on-dark-line); }
.adv-card { background: var(--ink); padding: 34px 28px; position: relative; transition: background .25s ease; }
.adv-card:hover { background: var(--ink-2); }
.adv-card__idx {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--red);
  margin-bottom: 18px;
  display: block;
}
.adv-card__ico { display: block; margin-bottom: 16px; }
.adv-card__ico svg { width: 30px; height: 30px; fill: #fff; opacity: .9; }
.adv-card h3 { font-size: 17px; margin-bottom: 11px; }
.adv-card p { font-size: 13.8px; line-height: 1.8; color: var(--on-dark); }

/* ---------- 12. 产品卡片 ---------- */
.grid-products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.grid-products--3 { grid-template-columns: repeat(3, 1fr); }

.pcard {
  background: var(--white);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  transition: box-shadow .28s ease, border-color .28s ease, transform .28s ease;
}
.pcard:hover { box-shadow: var(--shadow); border-color: var(--line-2); transform: translateY(-3px); }
.pcard__media {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.pcard__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s cubic-bezier(.22, .61, .36, 1); }
.pcard:hover .pcard__media img { transform: scale(1.05); }
.pcard__tag {
  position: absolute;
  top: 0; left: 0;
  padding: 5px 12px;
  font-size: 11.5px;
  letter-spacing: .06em;
  background: var(--red);
  color: #fff;
}
.pcard__body { padding: 22px 22px 20px; display: flex; flex-direction: column; flex: 1; }
.pcard__cat { font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--gray-2); margin-bottom: 9px; }
.pcard__title { font-size: 17px; margin-bottom: 9px; }
.pcard__title a:hover { color: var(--red); }
.pcard__desc {
  font-size: 13.5px;
  color: var(--gray);
  line-height: 1.75;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.pcard__foot {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.pcard__model { font-family: var(--font-num); font-size: 12.5px; color: var(--gray-2); }

/* ---------- 13. 页面头部 / 面包屑 ---------- */
.page-head {
  background: var(--ink);
  color: #fff;
  padding: 74px 0 66px;
  position: relative;
  overflow: hidden;
}
.page-head::before {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
  background-size: 76px 76px;
}
.page-head::after {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 4px; height: 100%;
  background: var(--red);
}
.page-head .container { position: relative; z-index: 2; }
.page-head__en {
  display: block;
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--on-dark-dim);
  margin-bottom: 14px;
}
.page-head__title { font-size: 40px; color: #fff; letter-spacing: -.02em; }
.page-head__desc { margin-top: 16px; max-width: 62em; font-size: 15px; line-height: 1.85; color: var(--on-dark); }

.crumb { background: var(--white); border-bottom: 1px solid var(--line); }
.crumb .container { display: flex; align-items: center; gap: 9px; height: 52px; font-size: 13px; color: var(--gray); }
.crumb a { color: var(--gray); }
.crumb a:hover { color: var(--red); }
.crumb__sep { color: var(--line-strong); }

/* ---------- 14. 侧栏布局 ---------- */
.layout-side { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 52px; align-items: start; }

.side-box { border: 1px solid var(--line); background: var(--white); margin-bottom: 24px; }
.side-box__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 17px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
}
.side-box__head span { font-family: var(--font-num); font-size: 10.5px; letter-spacing: .14em; color: var(--gray-2); }
.side-box__body { padding: 8px 0; }

.side-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  font-size: 14.2px;
  color: var(--ink-3);
  border-left: 2px solid transparent;
}
.side-nav a::after { content: "›"; color: var(--line-strong); font-size: 16px; }
.side-nav a:hover { background: var(--paper-2); color: var(--ink); border-left-color: var(--red); }
.side-nav a.is-on { background: var(--red-soft); color: var(--red); border-left-color: var(--red); font-weight: 600; }
.side-nav a.is-on::after { color: var(--red); }

.side-contact { background: var(--ink); color: var(--on-dark); padding: 24px 20px; border: 0; }
.side-contact__title { font-size: 15.5px; color: #fff; margin-bottom: 6px; }
.side-contact__en { font-family: var(--font-num); font-size: 10.5px; letter-spacing: .14em; color: var(--gray-2); margin-bottom: 18px; }
.side-contact__row { display: flex; gap: 10px; padding: 9px 0; font-size: 13.5px; line-height: 1.65; border-bottom: 1px solid var(--on-dark-line); }
.side-contact__row:last-of-type { border-bottom: 0; }
.side-contact__row svg { width: 15px; height: 15px; fill: var(--red); flex: none; margin-top: 4px; }
.side-contact__tel { font-size: 20px; font-weight: 700; color: #fff; letter-spacing: .01em; }
.side-contact .btn { margin-top: 18px; }

/* ---------- 15. 产品详情 ---------- */
.detail { display: grid; grid-template-columns: minmax(0, 1.02fr) 1fr; gap: 56px; align-items: start; }
.detail__media { border: 1px solid var(--line); background: var(--white); padding: 22px; }
.detail__media img { width: 100%; }
.detail__thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 12px; }
.detail__thumbs button {
  border: 1px solid var(--line);
  background: var(--white);
  padding: 6px;
  aspect-ratio: 1;
  overflow: hidden;
  transition: border-color .2s ease;
}
.detail__thumbs button.is-on, .detail__thumbs button:hover { border-color: var(--red); }
.detail__thumbs img { width: 100%; height: 100%; object-fit: cover; }

.detail__info h1 { font-size: 33px; margin-bottom: 14px; letter-spacing: -.02em; }
.detail__model {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 14px;
  background: var(--paper-2);
  border-left: 2px solid var(--red);
  font-size: 13.5px;
  color: var(--ink-3);
  margin-bottom: 20px;
}
.detail__model b { font-family: var(--font-num); color: var(--ink); letter-spacing: .02em; }
/* 型号行被选项卡替换后的变体（JS 将 .model-tabs__nav 移入） */
.detail__model--tabs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  background: none;
  padding: 0;
  border-left: 0;
}
.detail__model--tabs .model-tabs__nav { margin-bottom: 0; gap: 8px; }
.detail__model--tabs .model-tab { padding: 6px 16px; font-size: 13px; }
.detail__summary { font-size: 15px; line-height: 1.9; color: var(--gray); margin-bottom: 26px; }

.detail__actions { display: flex; flex-wrap: wrap; gap: 12px; padding-top: 24px; border-top: 1px solid var(--line); }
.detail__note {
  margin-top: 22px;
  padding: 16px 18px;
  background: var(--red-soft);
  border-left: 2px solid var(--red);
  font-size: 13px;
  color: var(--ink-3);
  line-height: 1.75;
}

/* ---------- 16. 技术参数表 ---------- */
.spec-block { margin-top: 66px; }
.spec-table-wrap { border: 1px solid var(--line); background: var(--white); overflow-x: auto; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 13.8px; min-width: 720px; }
.spec-table caption {
  caption-side: top;
  text-align: left;
  padding: 20px 22px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}
.spec-table caption span { font-family: var(--font-num); font-size: 10.5px; letter-spacing: .14em; color: var(--gray-2); display: block; margin-top: 5px; font-weight: 400; }

/* 型号 / 案例区块（与参数表同风格） */
.spec-cap {
  padding: 20px 22px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  border: 1px solid var(--line);
  border-bottom: 0;
  background: var(--white);
}
.spec-cap span { font-family: var(--font-num); font-size: 10.5px; letter-spacing: .14em; color: var(--gray-2); display: block; margin-top: 5px; font-weight: 400; }
.model-grid {
  border: 1px solid var(--line);
  background: var(--white);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}
.model-grid .model-card { margin: 0; background: var(--white); padding: 14px 14px 16px; }
.model-grid .model-card__media { display: block; border: 1px solid var(--line); background: var(--paper-2); overflow: hidden; }
.model-grid .model-card__media img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; transition: transform .35s ease; }
.model-grid .model-card:hover .model-card__media img { transform: scale(1.04); }
.model-grid .model-card--noimg .model-card__media {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  background: var(--paper-2);
}
.model-grid .model-card--noimg .model-card__media::before {
  content: "IMG";
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--line-2);
}
.model-grid .model-card figcaption {
  margin-top: 10px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  text-align: center;
  font-family: var(--font-num);
  letter-spacing: .02em;
}
/* 型号选项卡 + 大图切换（点击型号名换图） */
.model-tabs__nav { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.model-tab {
  appearance: none;
  border: 1px solid var(--line-2);
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  padding: 9px 22px;
  cursor: pointer;
  transition: all .2s ease;
}
.model-tab:hover { border-color: var(--red); color: var(--red); }
.model-tab.is-active { background: var(--red); border-color: var(--red); color: #fff; }
.model-tabs__stage {
  position: relative;
  border: 1px solid var(--line);
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  padding: 26px;
}
.model-tabs__img { max-width: 100%; max-height: 560px; width: auto; height: auto; display: block; }
.model-tabs__empty { display: none; color: var(--gray-2); font-size: 13.5px; letter-spacing: .08em; }
.model-tabs__stage.is-empty .model-tabs__img { display: none; }
.model-tabs__stage.is-empty .model-tabs__empty { display: block; }
.case-grid {
  border: 1px solid var(--line);
  background: var(--white);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}
.case-grid .case-item { display: block; background: var(--white); padding: 12px 12px 14px; }
.case-grid .case-item img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--paper-2);
  transition: transform .35s ease;
}
.case-grid .case-item:hover img { transform: scale(1.03); }
.case-grid .case-item span {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  color: var(--gray-2);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.case-grid .case-item:hover span { color: var(--red); }
@media (max-width: 980px) {
  .model-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
}
.spec-table th, .spec-table td {
  padding: 12px 16px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
  font-variant-numeric: tabular-nums;
}
.spec-table thead th {
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: .02em;
  border-color: var(--ink);
  white-space: nowrap;
}
.spec-table tbody tr:nth-child(even) { background: var(--paper); }
.spec-table tbody tr:hover { background: var(--red-soft); }
.spec-table tbody td:first-child, .spec-table tbody th:first-child {
  background: var(--paper-2);
  color: var(--ink-2);
  font-weight: 500;
  white-space: nowrap;
}
.spec-table td[colspan], .spec-table th[colspan] { background: var(--paper-2); color: var(--ink); font-weight: 600; }
.spec-table:not(:has(thead)) tr:first-child td { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- 17. 富文本内容 ---------- */
.rich-content { font-size: 15.5px; line-height: 1.95; color: var(--ink-3); }
.rich-content > * + * { margin-top: 20px; }
.rich-content h2 { font-size: 24px; margin-top: 42px; padding-left: 15px; border-left: 3px solid var(--red); }
.rich-content h3 { font-size: 19px; margin-top: 34px; }
.rich-content h4 { font-size: 16.5px; margin-top: 28px; }
.rich-content strong, .rich-content b { color: var(--ink); }
.rich-content img { margin: 8px 0; border: 1px solid var(--line); }
.rich-content ul, .rich-content ol { padding-left: 22px; }
.rich-content ul li { list-style: none; position: relative; padding-left: 16px; margin: 9px 0; }
.rich-content ul li::before { content: ""; position: absolute; left: 0; top: 11px; width: 5px; height: 5px; background: var(--red); }
.rich-content ol { list-style: decimal; }
.rich-content ol li { margin: 9px 0; }
.rich-content blockquote {
  padding: 18px 22px;
  background: var(--paper-2);
  border-left: 3px solid var(--ink);
  color: var(--ink-2);
}
.rich-content table { width: 100%; border-collapse: collapse; font-size: 13.8px; margin: 22px 0; }
.rich-content table th, .rich-content table td { border: 1px solid var(--line); padding: 11px 14px; text-align: left; }
.rich-content table th { background: var(--paper-2); color: var(--ink); font-weight: 600; }
.rich-content table tr:first-child td { background: var(--ink); color: #fff; border-color: var(--ink); font-weight: 600; }
.rich-content table tr:nth-child(even) td { background: var(--paper); }
.rich-content a { color: var(--red); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 18. 文章详情 ---------- */
.article__head { padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 34px; }
.article__head h1 { font-size: 32px; letter-spacing: -.02em; margin-bottom: 18px; }
.article__meta { display: flex; flex-wrap: wrap; gap: 22px; font-size: 13px; color: var(--gray-2); }
.article__meta span { display: inline-flex; align-items: center; gap: 7px; }
.article__meta svg { width: 14px; height: 14px; fill: var(--line-strong); }

.article-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 54px; padding-top: 30px; border-top: 1px solid var(--line); }
.article-nav a {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--line);
  background: var(--white);
  transition: all .22s ease;
}
.article-nav a:hover { border-color: var(--red); }
.article-nav a span { display: block; font-size: 12px; letter-spacing: .08em; color: var(--gray-2); margin-bottom: 7px; }
.article-nav a b { display: block; font-size: 14.2px; font-weight: 500; color: var(--ink-2); line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-nav .is-next { text-align: right; }

/* 新闻列表 */
.news-list { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.news-item { background: var(--white); display: grid; grid-template-columns: 118px minmax(0, 1fr) auto; gap: 26px; align-items: center; padding: 24px 26px; transition: background .22s ease; }
.news-item:hover { background: var(--paper); }
.news-item__date { text-align: center; border-right: 1px solid var(--line); padding-right: 22px; }
.news-item__day { font-family: var(--font-num); font-size: 30px; font-weight: 700; color: var(--ink); line-height: 1; letter-spacing: -.02em; }
.news-item__ym { display: block; margin-top: 7px; font-size: 12px; color: var(--gray-2); letter-spacing: .05em; }
.news-item__title { font-size: 17px; margin-bottom: 8px; }
.news-item__desc {
  font-size: 13.5px; color: var(--gray); line-height: 1.75;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.news-item__go { flex: none; }

/* ---------- 19. 表单 ---------- */
.form-card { border: 1px solid var(--line); background: var(--white); padding: 42px 46px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 22px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 500; color: var(--ink-2); }
.field label i { color: var(--red); font-style: normal; margin-left: 3px; }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line-2);
  background: var(--paper);
  color: var(--ink);
  font-size: 14.5px;
  border-radius: var(--radius);
  transition: border-color .2s ease, background .2s ease;
}
.field textarea { min-height: 132px; resize: vertical; line-height: 1.7; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--ink); background: #fff; }
.field input::placeholder, .field textarea::placeholder { color: var(--gray-2); }
.form-actions { margin-top: 28px; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.form-tip { font-size: 12.5px; color: var(--gray-2); }

/* ---------- 20. 联系方式 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.contact-card { background: var(--white); padding: 32px 28px; }
.contact-card__ico svg { width: 26px; height: 26px; fill: var(--red); margin-bottom: 16px; }
.contact-card h3 { font-size: 16px; margin-bottom: 10px; }
.contact-card p { font-size: 14.8px; line-height: 1.85; color: var(--ink-3); }
.map-wrap { border: 1px solid var(--line); background: var(--white); padding: 12px; }
.map-wrap iframe { display: block; width: 100%; height: 420px; border: 0; }

/* ---------- 21. 分页 ---------- */
.pager { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 46px; }
.pager a, .pager span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 13px;
  border: 1px solid var(--line);
  background: var(--white);
  font-size: 14px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.pager a:hover { border-color: var(--ink); color: var(--ink); }
.pager .is-on { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ---------- 22. 页脚 ---------- */
.footer { background: var(--ink); color: var(--on-dark); padding: 74px 0 0; }
.footer__top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.25fr; gap: 46px; padding-bottom: 52px; }
.footer__brand .logo__name { color: #fff; }
.footer__brand .logo__en { color: var(--on-dark-dim); }
.footer__brand { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.footer__brand img { height: 44px; }
.footer__intro { font-size: 13.5px; line-height: 1.9; color: var(--on-dark-dim); max-width: 34em; }
.footer__title { font-size: 15px; color: #fff; margin-bottom: 20px; letter-spacing: .02em; }
.footer__list { display: grid; gap: 11px; }
.footer__list a { font-size: 13.8px; color: var(--on-dark); }
.footer__list a:hover { color: #fff; }
.footer__row { display: flex; gap: 11px; font-size: 13.8px; line-height: 1.75; padding: 8px 0; }
.footer__row svg { width: 15px; height: 15px; fill: var(--red); flex: none; margin-top: 4px; }
.footer__tel { font-size: 22px; font-weight: 700; color: #fff; letter-spacing: .01em; }
.footer__qr { margin-top: 20px; }
.footer__qr img { width: 108px; border: 4px solid #fff; }
.footer__qr span { display: block; margin-top: 9px; font-size: 12.5px; color: var(--on-dark-dim); }
.footer__bottom {
  border-top: 1px solid var(--on-dark-line);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 12.8px;
  color: var(--on-dark-dim);
}
.footer__bottom a { color: var(--on-dark-dim); }
.footer__bottom a:hover { color: #fff; }
.footer__links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------- 23. 浮动联系栏 ---------- */
.float-bar {
  position: fixed;
  right: 18px;
  bottom: 92px;
  z-index: 150;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.float-bar__item {
  width: 52px;
  height: 52px;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all .22s ease;
}
.float-bar__item svg { width: 21px; height: 21px; fill: var(--ink-2); transition: fill .22s ease; }
.float-bar__item:hover { background: var(--red); }
.float-bar__item:hover svg { fill: #fff; }
.float-bar__pop {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%) translateX(6px);
  background: var(--ink);
  color: #fff;
  padding: 9px 14px;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all .24s ease;
}
.float-bar__pop::after {
  content: "";
  position: absolute;
  right: -5px; top: 50%;
  margin-top: -5px;
  border: 5px solid transparent;
  border-left-color: var(--ink);
}
.float-bar__item:hover .float-bar__pop { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
.float-bar__item--qr { cursor: pointer; }
.float-bar__item--qr.is-on .float-bar__pop { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
.float-bar__item--qr .float-bar__pop { padding: 12px; }
.float-bar__item--qr .float-bar__pop img { width: 116px; max-width: none; display: block; }
.float-bar__item--top { display: none; }
.float-bar__item--top.is-show { display: flex; }

/* ---------- 24. 滚动动效 ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s cubic-bezier(.22, .61, .36, 1); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal--d1 { transition-delay: .09s; }
.reveal--d2 { transition-delay: .18s; }
.reveal--d3 { transition-delay: .27s; }
.reveal--d4 { transition-delay: .36s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__slide.is-active { animation: none; }
}

/* ---------- 25. 分页条（内容区通用） ---------- */
.sec-foot { margin-top: 56px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

/* ---------- 26. 产品中心系列分组 ---------- */
.series-block { margin-bottom: 72px; }
.series-block:last-child { margin-bottom: 0; }
.series-block__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 32px;
}
.series-block__idx {
  display: block;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--red);
  margin-bottom: 10px;
}
.series-block__title { font-size: 27px; letter-spacing: -.02em; }
.series-block__title a:hover { color: var(--red); }
.series-block__en {
  display: block;
  margin-top: 7px;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray-2);
}

/* ---------- 27. IE 提示 ---------- */
.ie-tip {
  padding: 12px 20px;
  background: var(--red-soft);
  border-bottom: 1px solid var(--red);
  color: var(--red-dark);
  font-size: 14px;
  text-align: center;
}

/* ---------- 28. 分页条兼容（PbootCMS 输出） ---------- */
.pager > a, .pager > span, .pager > b, .pager > em, .pager > i, .pager > strong, .pager > label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: 0 13px;
  border: 1px solid var(--line);
  background: var(--white);
  font-size: 14px;
  font-style: normal;
  font-weight: 400;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.pager > a:hover { border-color: var(--ink); color: var(--ink); }
.pager > b, .pager > strong, .pager > .is-on, .pager > .current, .pager > .active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
  font-weight: 600;
}

/* ---------- 29. 404 ---------- */
.err-page { padding: 120px 0; text-align: center; }
.err-page__code {
  font-family: var(--font-num);
  font-size: 106px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -.04em;
}
.err-page__code i { color: var(--red); font-style: normal; }
.err-page h1 { font-size: 26px; margin: 20px 0 12px; }
.err-page p { color: var(--gray); margin-bottom: 32px; }

/* ---------- 27. 响应式 ---------- */
@media (max-width: 1360px) {
  .header__phone { display: none; }
  .header__cta { gap: 14px; }
}

@media (max-width: 1180px) {
  .nav__link { padding: 0 11px; font-size: 14.2px; }
  .header__phone { display: none; }
  .header__cta { display: none; }
  .burger { display: flex; }
  .series-grid { grid-template-columns: repeat(3, 1fr); }
  .grid-products { grid-template-columns: repeat(3, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__top { grid-template-columns: 1.4fr 1fr 1.2fr; }
  .footer__top > .footer__col:nth-child(3) { display: none; }
  .hero__title { font-size: 46px; }
}

@media (max-width: 980px) {
  .section { padding: 68px 0; }
  .nav, .header__phone { display: none; }
  .header__cta { display: none; }
  .burger { display: flex; }
  .header__inner { height: 64px; }
  .topbar__left { display: none; }
  .topbar .container { justify-content: flex-end; height: 34px; }
  .head__title { font-size: 30px; }
  .page-head { padding: 52px 0 46px; }
  .page-head__title { font-size: 30px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .split--rev .split__media { order: 0; }
  .layout-side { grid-template-columns: 1fr; gap: 40px; }
  .detail { grid-template-columns: 1fr; gap: 36px; }
  .hero__inner { padding-top: 84px; padding-bottom: 92px; }
  .hero__title { font-size: 38px; }
  .hero__ctrl { bottom: 92px; right: 16px; gap: 10px; }
  .hero__arrow { width: 42px; height: 42px; }
  .news-item { grid-template-columns: 84px minmax(0, 1fr); gap: 18px; padding: 20px; }
  .news-item__go { display: none; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .footer__top > .footer__col:nth-child(3) { display: grid; }
  .form-card { padding: 30px 24px; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .container { padding: 0 18px; }
  .section { padding: 52px 0; }
  .head { margin-bottom: 34px; }
  .head__title { font-size: 25px; }
  .hero__title { font-size: 29px; }
  .hero__title em::after { height: 2px; }
  .hero__desc { font-size: 15px; }
  .hero__inner { padding-top: 64px; padding-bottom: 76px; }
  .hero__actions { gap: 10px; }
  .hero__actions .btn { flex: 1; min-width: 140px; padding: 0 16px; }
  .hero__dots { display: none; }
  .hero__ctrl { bottom: 20px; right: 16px; gap: 0; }
  .hero__arrow { width: 38px; height: 38px; }
  .hero__arrow svg { width: 17px; height: 17px; }
  .metrics__inner { grid-template-columns: repeat(2, 1fr); }
  .metric { padding: 22px 18px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
  .metric:nth-child(2n) { border-right: 0; }
  .metric__num { font-size: 28px; }
  .series-grid, .grid-products, .grid-products--3 { grid-template-columns: repeat(2, 1fr); }
  .series-card__body { padding: 2px 18px 0; }
  .series-card__title { font-size: 16.5px; }
  .adv-grid { grid-template-columns: 1fr; }
  .page-head__title { font-size: 25px; }
  .detail__info h1 { font-size: 24px; }
  .article__head h1 { font-size: 23px; }
  .article-nav { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer { padding-top: 50px; }
  .footer__top { grid-template-columns: 1fr; gap: 34px; }
  .footer__top > .footer__col:nth-child(3) { display: grid; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .float-bar { right: 12px; bottom: 74px; }
  .float-bar__item { width: 46px; height: 46px; }
  .err-page__code { font-size: 72px; }
  .spec-table { font-size: 12.8px; }
  .spec-table th, .spec-table td { padding: 9px 11px; }
}

@media (max-width: 420px) {
  .series-grid, .grid-products, .grid-products--3 { grid-template-columns: 1fr; }
  .logo__mark { width: 38px; height: 38px; font-size: 21px; }
  .logo__name { font-size: 15.5px; }
}

/* ---------- 28. 打印 ---------- */
@media print {
  .header, .topbar, .float-bar, .footer, .crumb, .hero__dots, .hero__ctrl { display: none; }
  body { background: #fff; }
}