/* ==========================================================================
   昆明嘉言懿行商贸有限公司 · 挖掘机配件批发站
   设计系统 · Design System
   主色取自 logo 墨绿，强调色取工程机械黄，深色区营造工业质感
   ========================================================================== */

/* ---------- 1. 变量与重置 ---------- */
:root {
  /* 品牌绿（取自 logo 齿轮色） */
  --brand-900: #0B1F1A;
  --brand-800: #12332B;
  --brand-700: #1A4A3E;
  --brand-600: #226152;
  --brand-500: #2E7D68;
  --brand-400: #4E9B85;
  --brand-200: #BFDCD3;
  --brand-100: #E8F2EE;

  /* 工程黄（行动色） */
  --accent-700: #B57206;
  --accent-600: #D98908;
  --accent-500: #F0A31E;
  --accent-400: #FFB93D;
  --accent-100: #FDF2DC;

  /* 中性色 */
  --ink-900: #101815;
  --ink-800: #1B2622;
  --ink-700: #2B3833;
  --ink-600: #44534D;
  --ink-500: #5F6F68;
  --ink-400: #85948E;
  --ink-300: #A9B6B1;
  --line: #E3E9E6;
  --line-strong: #CFD9D5;
  --bg: #F5F8F6;
  --bg-alt: #EDF2EF;
  --white: #FFFFFF;

  /* 尺寸 */
  --container: 1240px;
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 21, .06), 0 1px 3px rgba(16, 24, 21, .04);
  --shadow: 0 4px 16px rgba(16, 24, 21, .07);
  --shadow-lg: 0 18px 44px rgba(16, 24, 21, .13);
  --ease: cubic-bezier(.22, .61, .36, 1);

  /* 字体栈：不依赖外部字体，保证离线可运行 */
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB",
          "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Oswald", Impact, var(--font);
}

*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, p { margin: 0; }
input, select, textarea { font: inherit; color: inherit; }

::selection { background: var(--brand-500); color: #fff; }

/* 通用容器 */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* 屏幕阅读器专用 */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 2. 顶部信息条 ---------- */
.topbar {
  background: var(--brand-900);
  color: rgba(255, 255, 255, .78);
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 38px;
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: 18px;
  min-width: 0;
}

.topbar__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-400);
  font-weight: 600;
  letter-spacing: .4px;
  white-space: nowrap;
}

.topbar__badge::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(240, 163, 30, .22);
}

.topbar__note {
  color: rgba(255, 255, 255, .55);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topbar__right {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-shrink: 0;
}

.topbar__item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: color .2s var(--ease);
}

.topbar__item:hover { color: #fff; }
.topbar__item svg { width: 14px; height: 14px; opacity: .85; }
.topbar__item b {
  font-family: var(--font-num);
  font-size: 16px;
  letter-spacing: .5px;
  color: #fff;
  font-weight: 700;
}

/* ---------- 3. 主导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s var(--ease);
}

.header.is-stuck { box-shadow: 0 6px 24px rgba(16, 24, 21, .09); }

.header__inner {
  display: flex;
  align-items: center;
  gap: 32px;
  min-height: 84px;
}

/* Logo 区：白底图直接落在白底导航上 */
.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.logo__img {
  width: 108px;
  height: auto;
  flex-shrink: 0;
}

.logo__text { display: flex; flex-direction: column; gap: 1px; }

.logo__name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .5px;
  color: var(--ink-900);
  line-height: 1.3;
}

.logo__sub {
  font-size: 11px;
  letter-spacing: 2.2px;
  color: var(--ink-400);
  text-transform: uppercase;
  font-weight: 600;
}

/* 导航菜单 */
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-700);
  border-radius: var(--radius-sm);
  transition: color .2s var(--ease), background .2s var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  background: var(--brand-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s var(--ease);
}

.nav__link:hover { color: var(--brand-600); }
.nav__link:hover::after { transform: scaleX(1); }

.nav__link.is-active { color: var(--brand-600); }
.nav__link.is-active::after { transform: scaleX(1); }

/* 导航右侧询价按钮 */
.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  height: 44px;
  padding: 0 20px;
  background: var(--accent-500);
  color: var(--brand-900);
  font-weight: 800;
  font-size: 14.5px;
  border-radius: var(--radius-sm);
  box-shadow: 0 3px 0 var(--accent-700);
  transition: transform .16s var(--ease), box-shadow .16s var(--ease), background .2s;
  white-space: nowrap;
}

.header__cta:hover {
  background: var(--accent-400);
  transform: translateY(-1px);
  box-shadow: 0 5px 0 var(--accent-700);
}

.header__cta:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--accent-700); }
.header__cta svg { width: 17px; height: 17px; }

/* 汉堡按钮（移动端） */
.burger {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--ink-800);
  transition: transform .28s var(--ease), opacity .2s;
}

.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mobile-menu {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(86vw, 340px);
  background: var(--white);
  z-index: 200;
  padding: 22px 22px 34px;
  transform: translateX(100%);
  transition: transform .34s var(--ease);
  overflow-y: auto;
  box-shadow: -20px 0 60px rgba(16, 24, 21, .2);
}

.mobile-menu.is-open { transform: translateX(0); }

.mobile-menu__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 8px;
}

.mobile-menu__title { font-weight: 800; font-size: 16px; color: var(--ink-900); }

.mobile-menu__close {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--bg-alt);
  font-size: 20px;
  line-height: 1;
  color: var(--ink-600);
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 4px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-800);
  border-bottom: 1px solid var(--line);
}

.mobile-menu__link span { font-size: 13px; color: var(--ink-300); font-weight: 500; }
.mobile-menu__link.is-active { color: var(--brand-600); }

.mobile-menu__contact {
  margin-top: 24px;
  padding: 18px;
  background: var(--brand-900);
  border-radius: var(--radius);
  color: #fff;
}

.mobile-menu__contact p { font-size: 12px; color: rgba(255, 255, 255, .6); letter-spacing: 1px; }
.mobile-menu__phone {
  display: block;
  font-family: var(--font-num);
  font-size: 25px;
  font-weight: 800;
  letter-spacing: .5px;
  margin: 4px 0 10px;
  color: var(--accent-400);
}
.mobile-menu__wx { font-size: 13px; color: rgba(255, 255, 255, .8); }
.mobile-menu__wx b { color: #fff; letter-spacing: .5px; }

.menu-mask {
  position: fixed;
  inset: 0;
  background: rgba(11, 31, 26, .45);
  backdrop-filter: blur(2px);
  z-index: 150;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s, visibility .3s;
}

.menu-mask.is-open { opacity: 1; visibility: visible; }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  height: 50px;
  padding: 0 26px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: all .2s var(--ease);
  white-space: nowrap;
  border: 1.5px solid transparent;
}

.btn svg { width: 17px; height: 17px; }

.btn--primary {
  background: var(--accent-500);
  color: var(--brand-900);
  box-shadow: 0 3px 0 var(--accent-700);
}

.btn--primary:hover {
  background: var(--accent-400);
  transform: translateY(-1px);
  box-shadow: 0 5px 0 var(--accent-700);
}

.btn--brand {
  background: var(--brand-600);
  color: #fff;
  box-shadow: 0 3px 0 var(--brand-900);
}

.btn--brand:hover {
  background: var(--brand-500);
  transform: translateY(-1px);
  box-shadow: 0 5px 0 var(--brand-900);
}

.btn--ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, .3);
}

.btn--ghost:hover {
  border-color: rgba(255, 255, 255, .75);
  background: rgba(255, 255, 255, .08);
}

.btn--outline {
  border-color: var(--line-strong);
  color: var(--ink-700);
  background: #fff;
}

.btn--outline:hover { border-color: var(--brand-500); color: var(--brand-600); }

.btn--sm { height: 40px; padding: 0 16px; font-size: 13.5px; }
.btn--block { width: 100%; }

/* ---------- 5. 首屏 Hero ---------- */
.hero {
  position: relative;
  background: var(--brand-900);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

/* 背景层：径向光晕 + 工程网格 */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(900px 520px at 78% 12%, rgba(46, 125, 104, .5), transparent 68%),
    radial-gradient(700px 420px at 12% 88%, rgba(240, 163, 30, .13), transparent 70%),
    linear-gradient(160deg, #0B1F1A 0%, #10322A 52%, #0C2620 100%);
  z-index: -2;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 30%, transparent 78%);
  z-index: -1;
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: 56px;
  align-items: center;
  padding: 78px 0 86px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 30px;
  padding: 0 14px 0 12px;
  margin-bottom: 24px;
  background: rgba(240, 163, 30, .12);
  border: 1px solid rgba(240, 163, 30, .34);
  border-radius: 30px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1.4px;
  color: var(--accent-400);
}

.hero__eyebrow i {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-500);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(240, 163, 30, .55); }
  50% { box-shadow: 0 0 0 7px rgba(240, 163, 30, 0); }
}

.hero__title {
  font-size: clamp(30px, 3.9vw, 52px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -.5px;
  color: #fff;
}

.hero__title em {
  font-style: normal;
  position: relative;
  color: var(--accent-400);
  white-space: nowrap;
}

/* 标题下的手工感下划线 */
.hero__title em::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 8px;
  background: rgba(240, 163, 30, .26);
  border-radius: 2px;
  z-index: -1;
}

.hero__desc {
  margin-top: 22px;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .72);
  max-width: 560px;
}

.hero__desc b { color: #fff; font-weight: 700; }

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

/* 首屏数据 */
.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 44px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero__stat {
  padding: 18px 18px 16px;
  background: rgba(11, 31, 26, .55);
}

.hero__stat strong {
  display: block;
  font-family: var(--font-num);
  font-size: 30px;
  font-weight: 800;
  line-height: 1.1;
  color: #fff;
  letter-spacing: .5px;
}

.hero__stat strong span { font-size: 15px; margin-left: 2px; color: var(--accent-400); }
.hero__stat small { display: block; margin-top: 4px; font-size: 12.5px; color: rgba(255, 255, 255, .55); }

/* 首屏右侧：产品图堆叠 */
.hero__visual {
  position: relative;
  height: 100%;
  min-height: 420px;
  display: grid;
  place-items: center;
}

.hero__disc {
  position: absolute;
  width: 420px; height: 420px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, .14);
  animation: spin 46s linear infinite;
}

.hero__disc::before {
  content: "";
  position: absolute;
  inset: 34px;
  border-radius: 50%;
  border: 1px solid rgba(240, 163, 30, .16);
}

@keyframes spin { to { transform: rotate(360deg); } }

.hero__card {
  position: relative;
  width: 100%;
  max-width: 400px;
  background: linear-gradient(165deg, rgba(255, 255, 255, .13), rgba(255, 255, 255, .04));
  border: 1px solid rgba(255, 255, 255, .17);
  border-radius: var(--radius-lg);
  padding: 22px;
  backdrop-filter: blur(10px);
  box-shadow: 0 28px 70px rgba(0, 0, 0, .38);
}

.hero__card img {
  width: 100%;
  height: 236px;
  object-fit: contain;
  background: rgba(255, 255, 255, .95);
  border-radius: var(--radius);
  padding: 12px;
}

.hero__card-meta {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
}

.hero__card-meta b {
  display: block;
  font-family: var(--font-num);
  font-size: 19px;
  letter-spacing: .6px;
  color: #fff;
}

.hero__card-meta small {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .6);
}

.hero__card-tag {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .6px;
  color: var(--brand-900);
  background: var(--accent-500);
  padding: 5px 10px;
  border-radius: 3px;
  white-space: nowrap;
}

/* 悬浮小徽标 */
.hero__float {
  position: absolute;
  background: #fff;
  color: var(--ink-900);
  border-radius: var(--radius);
  padding: 11px 15px;
  box-shadow: var(--shadow-lg);
  font-size: 12.5px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 9px;
  animation: floaty 5.5s ease-in-out infinite;
}

.hero__float--1 { top: -15px; left: -20px; }
.hero__float--2 { top: -15px; right: -18px; animation-delay: -2.6s; }

.hero__float i {
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--brand-100);
  color: var(--brand-600);
  font-style: normal;
  font-size: 13px;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* ---------- 6. 品牌/机型跑马灯 ---------- */
.marquee {
  background: var(--brand-800);
  border-top: 1px solid rgba(255, 255, 255, .07);
  overflow: hidden;
  padding: 14px 0;
}

.marquee__track {
  display: flex;
  gap: 46px;
  width: max-content;
  animation: marquee 34s linear infinite;
}

.marquee:hover .marquee__track { animation-play-state: paused; }

.marquee__item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  letter-spacing: .8px;
  color: rgba(255, 255, 255, .48);
  white-space: nowrap;
  font-weight: 600;
}

.marquee__item b { color: rgba(255, 255, 255, .85); font-weight: 700; }
.marquee__item::before {
  content: "";
  width: 4px; height: 4px;
  background: var(--accent-500);
  transform: rotate(45deg);
}

@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 7. 通用区块 ---------- */
.section { padding: 84px 0; }
.section--tight { padding: 62px 0; }
.section--gray { background: var(--bg); }
.section--dark { background: var(--brand-900); color: #fff; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 44px;
}

.section-head__left { max-width: 660px; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--brand-500);
  margin-bottom: 14px;
}

.section-label::before {
  content: "";
  width: 22px; height: 2px;
  background: var(--accent-500);
}

.section--dark .section-label { color: var(--accent-400); }

.section-title {
  font-size: clamp(24px, 2.7vw, 36px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -.3px;
  color: var(--ink-900);
}

.section--dark .section-title { color: #fff; }

.section-desc {
  margin-top: 14px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-500);
}

.section--dark .section-desc { color: rgba(255, 255, 255, .62); }

.section-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--brand-600);
  padding-bottom: 6px;
  border-bottom: 1.5px solid var(--brand-200);
  transition: gap .2s var(--ease), border-color .2s;
  white-space: nowrap;
}

.section-more:hover { gap: 14px; border-color: var(--brand-500); }
.section-more svg { width: 15px; height: 15px; }

/* ---------- 8. 优势条 ---------- */
.advantages {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: -46px;
  position: relative;
  z-index: 5;
}

.advantage {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px 24px;
  box-shadow: var(--shadow);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s;
}

.advantage:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-200);
}

.advantage__icon {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 11px;
  background: var(--brand-100);
  color: var(--brand-600);
  margin-bottom: 16px;
}

.advantage__icon svg { width: 23px; height: 23px; }

.advantage h3 {
  font-size: 16px;
  font-weight: 800;
  color: var(--ink-900);
  margin-bottom: 7px;
}

.advantage p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-500);
}

/* ---------- 9. 分类卡片 ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.cat-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s;
}

/* 左侧强调条，hover 时展开 */
.cat-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent-500);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .3s var(--ease);
}

.cat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-200);
}

.cat-card:hover::before { transform: scaleY(1); }

.cat-card__icon {
  flex-shrink: 0;
  width: 56px; height: 56px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: linear-gradient(150deg, var(--brand-100), #DCEAE5);
  color: var(--brand-600);
}

.cat-card__icon svg { width: 27px; height: 27px; }

.cat-card__body { min-width: 0; flex: 1; }

.cat-card__name {
  font-size: 15.5px;
  font-weight: 800;
  color: var(--ink-900);
  line-height: 1.4;
  transition: color .2s;
}

.cat-card:hover .cat-card__name { color: var(--brand-600); }

.cat-card__en {
  display: block;
  margin-top: 3px;
  font-size: 11.5px;
  letter-spacing: .7px;
  text-transform: uppercase;
  color: var(--ink-300);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cat-card__count {
  display: inline-block;
  margin-top: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--brand-600);
  background: var(--brand-100);
  padding: 2px 9px;
  border-radius: 20px;
}

.cat-card__arrow {
  flex-shrink: 0;
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--ink-400);
  transition: all .25s var(--ease);
}

.cat-card__arrow svg { width: 14px; height: 14px; }

.cat-card:hover .cat-card__arrow {
  background: var(--brand-600);
  border-color: var(--brand-600);
  color: #fff;
  transform: rotate(-45deg);
}

/* ---------- 10. 产品卡片 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-200);
}

.product-card__media {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(circle at 50% 42%, #fff 0%, #F2F5F3 62%, #E9EFEC 100%);
  overflow: hidden;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 14px;
  transition: transform .42s var(--ease);
}

.product-card:hover .product-card__media img { transform: scale(1.06); }

.product-card__cat {
  position: absolute;
  top: 10px; left: 10px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .4px;
  color: var(--brand-700);
  background: rgba(232, 242, 238, .95);
  border: 1px solid var(--brand-200);
  padding: 3px 8px;
  border-radius: 3px;
  backdrop-filter: blur(4px);
  max-width: calc(100% - 20px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.product-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 15px 16px 16px;
}

.product-card__code {
  font-family: var(--font-num);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .3px;
  color: var(--accent-700);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-card__title {
  margin-top: 5px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-900);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 42px;
}

.product-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 13px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.product-card__meta {
  font-size: 11.5px;
  color: var(--ink-400);
  line-height: 1.4;
  min-width: 0;
}

.product-card__meta b { display: block; color: var(--ink-600); font-weight: 700; }

.product-card__btn {
  flex-shrink: 0;
  height: 32px;
  padding: 0 12px;
  font-size: 12.5px;
  font-weight: 800;
  color: var(--brand-700);
  background: var(--brand-100);
  border-radius: 3px;
  transition: all .2s;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.product-card__btn:hover { background: var(--brand-600); color: #fff; }
.product-card__btn svg { width: 12px; height: 12px; }

/* ---------- 11. 产品中心页（筛选栏 + 列表） ---------- */
.page-hero {
  background: var(--brand-900);
  color: #fff;
  padding: 56px 0 52px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(700px 320px at 88% 0%, rgba(46, 125, 104, .45), transparent 70%),
    linear-gradient(120deg, #0B1F1A, #12332B);
}

.page-hero__inner { position: relative; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .5);
  margin-bottom: 14px;
}

.breadcrumb a { transition: color .2s; }
.breadcrumb a:hover { color: var(--accent-400); }
.breadcrumb span { opacity: .4; }

.page-hero h1 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 900;
  letter-spacing: -.3px;
  line-height: 1.25;
}

.page-hero p {
  margin-top: 12px;
  font-size: 15px;
  color: rgba(255, 255, 255, .62);
  max-width: 680px;
}

/* 工具条 */
.toolbar {
  position: sticky;
  top: 84px;
  z-index: 60;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

.toolbar__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "search cart"
    "chips  chips";
  align-items: center;
  gap: 12px 20px;
}

.search {
  position: relative;
  grid-area: search;
  width: 100%;
  max-width: 480px;
}

.search input {
  width: 100%;
  height: 44px;
  padding: 0 44px 0 42px;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.search input::placeholder { color: var(--ink-300); }

.search input:focus {
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(46, 125, 104, .12);
}

.search__icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 17px; height: 17px;
  color: var(--ink-400);
  pointer-events: none;
}

.search__clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px; height: 22px;
  border-radius: 50%;
  display: none;
  place-items: center;
  background: var(--bg-alt);
  color: var(--ink-500);
  font-size: 14px;
  line-height: 1;
}

.search__clear.is-show { display: grid; }

.chips {
  grid-area: chips;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
  /* 右侧渐隐，提示还能横向滚动 */
  -webkit-mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 36px), transparent 100%);
  mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 36px), transparent 100%);
}

.chips::-webkit-scrollbar { display: none; }

.chip {
  flex-shrink: 0;
  height: 36px;
  padding: 0 14px;
  border-radius: 20px;
  border: 1.5px solid var(--line-strong);
  background: #fff;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-600);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all .2s var(--ease);
  white-space: nowrap;
}

.chip:hover { border-color: var(--brand-400); color: var(--brand-600); }

.chip.is-active {
  background: var(--brand-600);
  border-color: var(--brand-600);
  color: #fff;
}

.chip small {
  font-size: 11px;
  font-weight: 700;
  background: rgba(0, 0, 0, .08);
  padding: 1px 6px;
  border-radius: 10px;
}

.chip.is-active small { background: rgba(255, 255, 255, .22); }

/* 结果统计 */
.result-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding: 22px 0 4px;
  font-size: 13.5px;
  color: var(--ink-500);
}

.result-bar b { color: var(--ink-900); font-family: var(--font-num); font-size: 16px; }

.select {
  height: 38px;
  padding: 0 32px 0 12px;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2385948E' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 11px center;
  font-size: 13px;
  font-weight: 600;
  appearance: none;
  outline: none;
  cursor: pointer;
}

.select:focus { border-color: var(--brand-500); }

/* 空状态 */
.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 80px 20px;
  color: var(--ink-400);
}

.empty svg { width: 56px; height: 56px; margin: 0 auto 18px; opacity: .45; }
.empty h3 { font-size: 17px; color: var(--ink-700); margin-bottom: 8px; }
.empty p { font-size: 14px; }

/* 分页 */
.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-top: 46px;
  flex-wrap: wrap;
}

.pager button,
.pager span {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--line-strong);
  background: #fff;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink-600);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all .18s;
}

.pager button:hover:not(:disabled) { border-color: var(--brand-500); color: var(--brand-600); }

.pager button.is-active {
  background: var(--brand-600);
  border-color: var(--brand-600);
  color: #fff;
}

.pager button:disabled { opacity: .4; cursor: not-allowed; }
.pager span { border: 0; }

/* ---------- 12. 产品详情弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .26s, visibility .26s;
}

.modal.is-open { opacity: 1; visibility: visible; }

.modal__mask {
  position: absolute;
  inset: 0;
  background: rgba(11, 31, 26, .62);
  backdrop-filter: blur(4px);
}

.modal__panel {
  position: relative;
  width: min(1000px, 100%);
  max-height: min(88vh, 900px);
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 40px 100px rgba(0, 0, 0, .35);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: translateY(16px) scale(.98);
  transition: transform .3s var(--ease);
}

.modal.is-open .modal__panel { transform: translateY(0) scale(1); }

.modal__close {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 5;
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .92);
  box-shadow: var(--shadow);
  display: grid;
  place-items: center;
  font-size: 20px;
  line-height: 1;
  color: var(--ink-600);
  transition: background .2s, color .2s;
}

.modal__close:hover { background: var(--ink-900); color: #fff; }

.modal__body {
  display: grid;
  grid-template-columns: 44% 56%;
  overflow: hidden;
  flex: 1;
  min-height: 0;
}

.pd__gallery {
  background: linear-gradient(160deg, #F4F7F5, #E7EEEB);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  overflow-y: auto;
}

.pd__main-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  max-height: 340px;
  object-fit: contain;
  background: #fff;
  border-radius: var(--radius);
  padding: 14px;
  border: 1px solid var(--line);
}

.pd__thumbs { display: flex; gap: 9px; flex-wrap: wrap; }

.pd__thumb {
  width: 62px; height: 62px;
  border-radius: 4px;
  border: 2px solid transparent;
  background: #fff;
  padding: 4px;
  transition: border-color .2s;
}

.pd__thumb img { width: 100%; height: 100%; object-fit: contain; }
.pd__thumb.is-active { border-color: var(--brand-500); }

.pd__info {
  padding: 30px 32px 26px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.pd__cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  align-self: flex-start;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: .8px;
  color: var(--brand-700);
  background: var(--brand-100);
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 12px;
}

.pd__title {
  font-size: 21px;
  font-weight: 900;
  line-height: 1.4;
  color: var(--ink-900);
  letter-spacing: -.2px;
  padding-right: 34px;
}

.pd__specs {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.pd__specs-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-alt);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 1.4px;
  color: var(--ink-600);
  border-bottom: 1px solid var(--line);
}

.pd__specs-title svg { width: 14px; height: 14px; color: var(--brand-500); }

.pd__spec-row {
  display: grid;
  grid-template-columns: 118px 1fr;
  gap: 12px;
  padding: 10px 14px;
  font-size: 13.5px;
  border-bottom: 1px solid var(--line);
}

.pd__spec-row:last-child { border-bottom: 0; }
.pd__spec-row:nth-child(odd) { background: #FAFCFB; }

.pd__spec-row dt { color: var(--ink-400); font-weight: 600; }

.pd__spec-row dd {
  margin: 0;
  color: var(--ink-800);
  font-weight: 700;
  word-break: break-word;
  font-family: var(--font-num);
  letter-spacing: .3px;
}

.pd__desc {
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--ink-500);
}

/* 询价动作区 */
.pd__actions {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 10px;
}

.pd__cta-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.pd__contact {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: var(--accent-100);
  border: 1px dashed var(--accent-500);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--accent-700);
  font-weight: 700;
  line-height: 1.5;
}

.pd__contact svg { width: 16px; height: 16px; flex-shrink: 0; }
.pd__contact b { font-family: var(--font-num); font-size: 15px; letter-spacing: .5px; }

/* ---------- 13. 服务流程 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  counter-reset: step;
}

.step {
  position: relative;
  padding: 0 22px;
  counter-increment: step;
}

.step:first-child { padding-left: 0; }

.step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
  color: rgba(240, 163, 30, .34);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.step__line {
  position: absolute;
  top: 23px;
  left: 60px;
  right: -4px;
  height: 1px;
  background: linear-gradient(90deg, rgba(240, 163, 30, .4), rgba(255, 255, 255, .05));
}

.step:last-child .step__line { display: none; }

.step__dot {
  position: absolute;
  top: 20px;
  left: 46px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(240, 163, 30, .14);
}

.step:first-child .step__dot { left: 46px; }
.step:not(:first-child) .step__dot { left: 68px; }

.step h3 {
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}

.step p { font-size: 13.5px; line-height: 1.75; color: rgba(255, 255, 255, .58); }

/* ---------- 14. 关于/优势大图区 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: 64px;
  align-items: center;
}

.about-visual {
  position: relative;
  padding-bottom: 32px;
}

.about-visual__main {
  aspect-ratio: 4 / 3.4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  padding: 28px;
}

.about-visual__main img { max-height: 100%; object-fit: contain; }

.about-visual__card {
  position: absolute;
  right: -18px;
  bottom: 0;
  width: 216px;
  background: var(--brand-900);
  color: #fff;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-lg);
}

.about-visual__card strong {
  display: block;
  font-family: var(--font-num);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
  color: var(--accent-400);
}

.about-visual__card span {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .68);
  line-height: 1.5;
}

.about-list { margin-top: 26px; display: grid; gap: 16px; }

.about-list li {
  display: flex;
  gap: 13px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-600);
}

.about-list li svg {
  flex-shrink: 0;
  width: 20px; height: 20px;
  margin-top: 2px;
  color: var(--brand-500);
}

.about-list b { color: var(--ink-900); }

/* ---------- 15. 联系区 ---------- */
.contact-band {
  position: relative;
  background: var(--brand-900);
  color: #fff;
  overflow: hidden;
  padding: 70px 0;
}

.contact-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 82% 20%, rgba(240, 163, 30, .16), transparent 68%),
    radial-gradient(700px 340px at 6% 96%, rgba(46, 125, 104, .4), transparent 70%);
}

.contact-band__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
  gap: 54px;
  align-items: center;
}

.contact-band h2 {
  font-size: clamp(24px, 2.8vw, 34px);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -.3px;
}

.contact-band p {
  margin-top: 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, .64);
  line-height: 1.8;
  max-width: 480px;
}

.contact-cards {
  display: grid;
  gap: 12px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: var(--radius);
  transition: background .2s, border-color .2s, transform .2s;
}

.contact-card:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(240, 163, 30, .45);
  transform: translateX(3px);
}

.contact-card__icon {
  flex-shrink: 0;
  width: 46px; height: 46px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: rgba(240, 163, 30, .14);
  color: var(--accent-400);
}

.contact-card__icon svg { width: 21px; height: 21px; }

.contact-card__body { min-width: 0; flex: 1; }

.contact-card__label {
  font-size: 11.5px;
  letter-spacing: 1.6px;
  color: rgba(255, 255, 255, .48);
  font-weight: 700;
}

.contact-card__value {
  display: block;
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: .6px;
  color: #fff;
  line-height: 1.35;
}

.contact-card__value--text {
  font-family: var(--font);
  font-size: 16px;
  letter-spacing: .4px;
}

.contact-card__copy {
  flex-shrink: 0;
  height: 30px;
  padding: 0 11px;
  font-size: 12px;
  font-weight: 700;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, .24);
  color: rgba(255, 255, 255, .8);
  transition: all .2s;
}

.contact-card__copy:hover { background: var(--accent-500); border-color: var(--accent-500); color: var(--brand-900); }

/* ---------- 16. 页脚 ---------- */
.footer {
  background: #081713;
  color: rgba(255, 255, 255, .58);
  font-size: 13.5px;
  padding: 58px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 44px;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer__brand img {
  width: 84px;
  height: auto;
  object-fit: contain;
  background: #fff;
  border-radius: 8px;
  padding: 6px;
  flex-shrink: 0;
}

.footer__brand b {
  display: block;
  font-size: 15.5px;
  color: #fff;
  font-weight: 800;
  line-height: 1.4;
}

.footer__brand small {
  display: block;
  font-size: 10.5px;
  letter-spacing: 1.6px;
  color: rgba(255, 255, 255, .35);
  text-transform: uppercase;
  margin-top: 2px;
}

.footer__desc { line-height: 1.85; color: rgba(255, 255, 255, .48); max-width: 320px; }

.footer__phone {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 18px;
  font-family: var(--font-num);
  font-size: 21px;
  font-weight: 800;
  color: var(--accent-400);
  letter-spacing: .6px;
}

.footer__phone svg { width: 18px; height: 18px; }

.footer h4 {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 1.8px;
  color: #fff;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.footer__links { display: grid; gap: 10px; }
.footer__links a { transition: color .2s, padding-left .2s; }
.footer__links a:hover { color: var(--accent-400); padding-left: 4px; }

.footer__contact { display: grid; gap: 12px; }

.footer__contact li {
  display: flex;
  gap: 10px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .52);
}

.footer__contact svg {
  flex-shrink: 0;
  width: 15px; height: 15px;
  margin-top: 4px;
  color: var(--brand-400);
}

.footer__contact b { color: #fff; font-family: var(--font-num); letter-spacing: .5px; }

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .35);
}

.footer__bottom a:hover { color: var(--accent-400); }

/* ---------- 17. 移动端悬浮联系条 ---------- */
.fab {
  position: fixed;
  right: 18px;
  bottom: 22px;
  z-index: 120;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fab__btn {
  width: 50px; height: 50px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 24px rgba(16, 24, 21, .25);
  transition: transform .2s, box-shadow .2s;
  position: relative;
}

.fab__btn:hover { transform: translateY(-3px) scale(1.04); }
.fab__btn svg { width: 23px; height: 23px; }

.fab__btn--phone { background: var(--accent-500); color: var(--brand-900); }
.fab__btn--wx { background: #22B573; color: #fff; }
.fab__btn--top {
  background: #fff;
  color: var(--ink-600);
  border: 1px solid var(--line);
  opacity: 0;
  visibility: hidden;
  transition: all .3s;
}

.fab__btn--top.is-show { opacity: 1; visibility: visible; }

/* 微信浮层 */
.wx-pop {
  position: absolute;
  right: 60px;
  bottom: 0;
  width: 206px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 16px;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px);
  transition: all .25s var(--ease);
  color: var(--ink-700);
}

.wx-pop.is-open { opacity: 1; visibility: visible; transform: translateX(0); }

.wx-pop__title {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-400);
  letter-spacing: 1px;
}

.wx-pop__id {
  display: block;
  margin: 6px 0 12px;
  font-family: var(--font-num);
  font-size: 17px;
  font-weight: 800;
  color: var(--ink-900);
  letter-spacing: .5px;
  word-break: break-all;
}

.wx-pop__btn {
  width: 100%;
  height: 34px;
  border-radius: 3px;
  background: var(--brand-600);
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
}

.wx-pop__btn:hover { background: var(--brand-500); }

/* 提示 toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translate(-50%, 14px);
  background: var(--ink-900);
  color: #fff;
  font-size: 13.5px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 30px;
  box-shadow: var(--shadow-lg);
  z-index: 500;
  opacity: 0;
  visibility: hidden;
  transition: all .28s var(--ease);
  white-space: nowrap;
}

.toast.is-show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

/* ---------- 18. 滚动入场动画 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .62s var(--ease), transform .62s var(--ease);
}

[data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- 18.5 产品详情补充元件 ---------- */
/* 件号行：详情弹窗标题下的醒目件号 */
.pd__code-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
  padding: 9px 13px;
  background: var(--bg-alt);
  border-left: 3px solid var(--accent-500);
  border-radius: 3px;
}

.pd__code-line span {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1.4px;
  color: var(--ink-400);
}

.pd__code-line b {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: .8px;
  color: var(--ink-900);
  word-break: break-all;
}

/* 可替换件号提示块 */
.pd__alt {
  padding: 12px 14px;
  background: rgba(255, 255, 255, .82);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-500);
}

.pd__alt b {
  display: block;
  margin-bottom: 3px;
  font-size: 11.5px;
  letter-spacing: 1px;
  color: var(--ink-400);
  text-transform: uppercase;
}

.pd__alt span {
  font-family: var(--font-num);
  color: var(--ink-700);
  letter-spacing: .4px;
  word-break: break-all;
}

/* 规格表内的 dl 取消默认缩进 */
.pd__specs dl { margin: 0; }

/* 询价单条目 */
.cart-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.cart-item:first-child { padding-top: 0; }

.cart-item img {
  width: 58px;
  height: 58px;
  object-fit: contain;
  background: var(--bg-alt);
  border-radius: 5px;
  padding: 5px;
  flex-shrink: 0;
}

.cart-item__body { flex: 1; min-width: 0; }

.cart-item__body b {
  display: block;
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 800;
  color: var(--accent-700);
  letter-spacing: .4px;
}

.cart-item__body span {
  display: block;
  margin-top: 2px;
  font-size: 12.5px;
  color: var(--ink-500);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cart-item__del {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg-alt);
  color: var(--ink-400);
  font-size: 16px;
  line-height: 1;
  display: grid;
  place-items: center;
  transition: all .18s;
}

.cart-item__del:hover { background: #FDE8E6; color: #C0392B; }

/* ---------- 18.6 联系方式大卡 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.cbox {
  display: flex;
  flex-direction: column;
  padding: 26px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .2s;
  position: relative;
  overflow: hidden;
}

.cbox::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -30px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--brand-100);
  opacity: .7;
  transition: transform .5s var(--ease);
}

.cbox:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-200);
}

.cbox:hover::after { transform: scale(1.5); }

.cbox__icon {
  position: relative;
  z-index: 1;
  width: 46px;
  height: 46px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  background: var(--brand-100);
  color: var(--brand-600);
  margin-bottom: 18px;
}

.cbox__icon svg { width: 22px; height: 22px; }

.cbox--phone .cbox__icon { background: var(--accent-100); color: var(--accent-700); }
.cbox--wx .cbox__icon { background: #E3F6EC; color: #22B573; }

.cbox__label {
  position: relative;
  z-index: 1;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--ink-400);
  margin-bottom: 6px;
}

.cbox__value {
  position: relative;
  z-index: 1;
  display: block;
  font-family: var(--font-num);
  font-size: 25px;
  font-weight: 800;
  letter-spacing: .6px;
  color: var(--ink-900);
  line-height: 1.2;
  word-break: break-all;
}

.cbox__value--text {
  font-family: var(--font);
  font-size: 17px;
  letter-spacing: .3px;
}

.cbox__sub {
  position: relative;
  z-index: 1;
  display: block;
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-400);
}

/* ---------- 18.7 询价表单 ---------- */
.inquiry-grid {
  display: grid;
  grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
  gap: 56px;
  align-items: start;
}

.form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-field {
  display: block;
  margin-bottom: 18px;
}

.form-field > span {
  display: block;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-700);
  letter-spacing: .3px;
}

.form-field > span i {
  font-style: normal;
  color: #D64545;
  margin-left: 2px;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: #FCFDFC;
  font-size: 14px;
  line-height: 1.6;
  outline: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
  resize: vertical;
}

.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--ink-300); }

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--brand-500);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(46, 125, 104, .12);
}

.form-tip {
  display: none;
  margin-top: 4px;
  font-size: 12.5px;
  font-weight: 600;
  color: #C0392B;
  background: #FDEDEB;
  border-left: 3px solid #D64545;
  padding: 8px 12px;
  border-radius: 3px;
}

.form-tip.is-show { display: block; }

.form-note {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-400);
  text-align: center;
}

/* 提交后的结果区 */
.form-result__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.form-result__badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: .6px;
  color: var(--brand-700);
  background: var(--brand-100);
  padding: 6px 13px;
  border-radius: 30px;
}

.form-result__badge::before {
  content: "✓";
  font-size: 11px;
}

.form-result pre {
  margin: 0;
  padding: 18px;
  max-height: 320px;
  overflow: auto;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-700);
  white-space: pre-wrap;
  word-break: break-word;
}

.form-result__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

/* ---------- 18.8 FAQ 手风琴 ---------- */
.faq {
  display: grid;
  gap: 12px;
  max-width: 920px;
  margin: 0 auto;
}

.faq__item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color .2s, box-shadow .2s;
}

.faq__item.is-open {
  border-color: var(--brand-200);
  box-shadow: var(--shadow);
}

.faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  text-align: left;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-800);
  transition: color .2s;
}

.faq__q:hover { color: var(--brand-600); }

.faq__q i {
  position: relative;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--line-strong);
  transition: all .25s var(--ease);
}

.faq__q i::before,
.faq__q i::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 1.6px;
  background: var(--ink-500);
  transform: translate(-50%, -50%);
  transition: transform .25s var(--ease), background .2s;
}

.faq__q i::after { transform: translate(-50%, -50%) rotate(90deg); }

.faq__item.is-open .faq__q i {
  border-color: var(--brand-500);
  background: var(--brand-500);
}

.faq__item.is-open .faq__q i::before,
.faq__item.is-open .faq__q i::after { background: #fff; }
.faq__item.is-open .faq__q i::after { transform: translate(-50%, -50%) rotate(0deg); }

.faq__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .32s var(--ease);
}

.faq__item.is-open .faq__a { grid-template-rows: 1fr; }

.faq__a > p {
  overflow: hidden;
  margin: 0;
  padding: 0 22px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-500);
  transition: padding .32s var(--ease);
}

.faq__item.is-open .faq__a > p { padding: 0 22px 20px; }

/* ---------- 18.9 机型对照表 ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 660px;
  font-size: 14px;
}

.spec-table thead th {
  background: var(--brand-900);
  color: rgba(255, 255, 255, .9);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-align: left;
  padding: 14px 18px;
  white-space: nowrap;
}

.spec-table tbody td {
  padding: 15px 18px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-600);
  line-height: 1.65;
  vertical-align: top;
}

.spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table tbody tr:nth-child(even) { background: #FAFCFB; }
.spec-table tbody tr:hover { background: var(--brand-100); }

.spec-table td b {
  font-family: var(--font-num);
  font-size: 15px;
  color: var(--ink-900);
  letter-spacing: .4px;
}

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1180px) {
  .product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .hero__inner { gap: 40px; }
  .hero__disc { width: 340px; height: 340px; }
}

@media (max-width: 1024px) {
  .nav { display: none; }
  .header__cta { display: none; }
  .burger { display: flex; }
  .hero__inner { grid-template-columns: 1fr; padding: 56px 0 64px; }
  .hero__visual { display: none; }
  .hero__stats { margin-top: 34px; }
  .advantages { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: -32px; }
  .cat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { max-width: 520px; }
  .contact-band__inner { grid-template-columns: 1fr; gap: 34px; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px 0; }
  .step__line { display: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .modal__body { grid-template-columns: 1fr; overflow-y: auto; }
  .pd__gallery { padding: 18px; }
  .pd__main-img { max-height: 300px; aspect-ratio: 4/3; }
  .pd__info { padding: 24px; }
  .toolbar { top: 72px; }

  /* 联系页与关于页 */
  .contact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .inquiry-grid { grid-template-columns: 1fr; gap: 34px; }
  .form-card { padding: 26px; }
  .spec-table { min-width: 620px; }
}

@media (max-width: 760px) {
  .container { padding: 0 16px; }
  body { font-size: 14.5px; }

  /* 顶部条：仅保留电话与微信 */
  .topbar__left .topbar__note { display: none; }
  .topbar__inner { min-height: 36px; }
  .topbar__right { gap: 14px; }
  .topbar__item--addr { display: none; }
  .topbar__item b { font-size: 14.5px; }

  .header__inner { min-height: 68px; gap: 12px; }
  .logo__img { width: 76px; height: auto; }
  .logo__name { font-size: 15px; }
  .logo__sub { font-size: 9px; letter-spacing: 1.2px; }

  .section { padding: 54px 0; }
  .section--tight { padding: 44px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 16px; margin-bottom: 30px; }
  .section-title { font-size: 23px; }
  .section-desc { font-size: 14px; }

  .hero__eyebrow {
    font-size: 11px;
    letter-spacing: .5px;
    height: auto;
    min-height: 28px;
    padding: 6px 12px;
    line-height: 1.4;
    white-space: nowrap;
  }

  .hero__title { font-size: 23px; letter-spacing: -.2px; }
  .hero__desc { font-size: 14.5px; margin-top: 16px; }
  .hero__actions { gap: 10px; margin-top: 26px; }
  .hero__actions .btn { flex: 1 1 100%; height: 48px; }
  .hero__stats { grid-template-columns: 1fr; }
  .hero__stat { display: flex; align-items: baseline; gap: 10px; padding: 13px 16px; }
  .hero__stat strong { font-size: 24px; }
  .hero__stat small { margin-top: 0; }

  .advantages { grid-template-columns: 1fr; gap: 12px; margin-top: -24px; }
  .advantage { padding: 20px; display: flex; gap: 15px; align-items: flex-start; }
  .advantage__icon { width: 40px; height: 40px; margin-bottom: 0; flex-shrink: 0; }
  .advantage h3 { font-size: 15px; }

  .cat-grid { grid-template-columns: 1fr; gap: 12px; }
  .cat-card { padding: 16px; gap: 14px; }
  .cat-card__icon { width: 46px; height: 46px; }
  .cat-card__arrow { display: none; }

  .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .product-card__media { aspect-ratio: 1 / 1; }
  .product-card__media img { padding: 8px; }
  .product-card__body { padding: 11px 12px 12px; }
  .product-card__code { font-size: 11px; }
  .product-card__title { font-size: 12.5px; min-height: 38px; -webkit-line-clamp: 2; }
  .product-card__foot { margin-top: 9px; padding-top: 9px; }
  .product-card__meta { display: none; }
  .product-card__btn { width: 100%; justify-content: center; height: 30px; font-size: 12px; }
  .product-card__cat { display: none; }

  .page-hero { padding: 36px 0 34px; }
  .page-hero p { font-size: 13.5px; }

  .toolbar { top: 68px; padding: 10px 0; }
  .toolbar__inner { gap: 10px; }
  .search { max-width: none; flex-basis: 100%; }
  .search input { height: 42px; }
  .chips { gap: 6px; }
  .chip { height: 32px; padding: 0 12px; font-size: 12.5px; }

  .steps { grid-template-columns: 1fr; gap: 24px; }
  .step { padding: 0 0 0 26px; }
  .step__dot { left: 0 !important; top: 14px; }
  .step::before { font-size: 24px; margin-bottom: 8px; }

  .about-visual__card { position: static; width: 100%; margin-top: 14px; }

  .footer { padding-top: 40px; }
  .footer__grid { grid-template-columns: 1fr; gap: 30px; padding-bottom: 30px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: 8px; }

  .modal { padding: 0; align-items: flex-end; }
  .modal__panel { max-height: 92vh; border-radius: 14px 14px 0 0; width: 100%; }
  .pd__title { font-size: 17px; padding-right: 30px; }
  .pd__spec-row { grid-template-columns: 96px 1fr; font-size: 12.5px; gap: 8px; }
  .pd__cta-row { grid-template-columns: 1fr; }

  .fab { right: 12px; bottom: 14px; gap: 8px; }
  .fab__btn { width: 46px; height: 46px; }
  .fab__btn svg { width: 20px; height: 20px; }
  .wx-pop { right: 0; bottom: 56px; }

  /* 联系页 */
  .contact-grid { grid-template-columns: 1fr; gap: 12px; }
  .cbox { padding: 20px; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 6px 14px; }
  .cbox__icon { margin-bottom: 0; width: 42px; height: 42px; }
  .cbox__label { width: calc(100% - 56px); margin-bottom: 0; font-size: 11.5px; }
  .cbox__value { font-size: 22px; width: 100%; }
  .cbox__value--text { font-size: 15.5px; }
  .cbox__sub { width: 100%; margin-top: 4px; }
  .cbox .btn { margin-top: 8px !important; }

  .form-card { padding: 22px 18px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-result__actions { grid-template-columns: 1fr; }
  .form-result pre { font-size: 12.5px; padding: 14px; }

  .faq__q { padding: 15px 16px; font-size: 14px; gap: 12px; }
  .faq__a > p { padding: 0 16px; font-size: 13.5px; }
  .faq__item.is-open .faq__a > p { padding: 0 16px 16px; }

  .table-wrap { border-radius: 6px; }
  .spec-table { min-width: 560px; font-size: 13px; }
  .spec-table thead th { padding: 11px 13px; font-size: 11.5px; }
  .spec-table tbody td { padding: 11px 13px; }

  .pd__code-line b { font-size: 16px; }
}

@media (max-width: 380px) {
  .product-grid { grid-template-columns: 1fr; }
  .product-card__media { aspect-ratio: 4/3; }
}

/* ==========================================================================
   18.10 语言切换 / 联系弹窗（多语言与电话改造新增）
   ========================================================================== */

/* 语言切换：胶囊双段 */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 30px;
  margin-right: 4px;
  flex-shrink: 0;
}

.lang-switch__btn {
  height: 28px;
  padding: 0 12px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: .3px;
  color: var(--ink-500);
  transition: all .2s var(--ease);
  white-space: nowrap;
}

.lang-switch__btn:hover { color: var(--brand-600); }

.lang-switch__btn.is-active {
  background: var(--brand-600);
  color: #fff;
  box-shadow: 0 2px 6px rgba(34, 97, 82, .28);
}

/* 移动端抽屉里的语言切换 */
.mobile-menu__lang {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  padding: 12px 14px;
  background: var(--bg-alt);
  border-radius: var(--radius);
}

.mobile-menu__lang span {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--ink-400);
}

/* 联系弹窗 */
.contact-sheet {
  padding: 34px 30px 30px;
  text-align: center;
}

.contact-sheet__icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  margin: 0 auto 16px;
  border-radius: 16px;
  background: var(--accent-100);
  color: var(--accent-700);
}

.contact-sheet__icon svg { width: 28px; height: 28px; }

.contact-sheet__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.6px;
  color: var(--ink-400);
  margin-bottom: 6px;
}

.contact-sheet__phone {
  display: block;
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 1.4px;
  color: var(--ink-900);
  line-height: 1.2;
  margin-bottom: 18px;
  user-select: all;
}

.contact-sheet__row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  padding: 12px 14px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  text-align: left;
  font-size: 13px;
  color: var(--ink-500);
}

.contact-sheet__row b {
  font-family: var(--font-num);
  font-size: 16px;
  letter-spacing: .5px;
  color: var(--ink-900);
  user-select: all;
}

.contact-sheet__row .contact-sheet__copy { margin-left: auto; }

.contact-sheet__copy {
  height: 28px;
  padding: 0 12px;
  border-radius: 3px;
  border: 1px solid var(--line-strong);
  background: #fff;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-600);
  transition: all .18s;
}

.contact-sheet__copy:hover { border-color: var(--brand-500); color: var(--brand-600); }

.contact-sheet__tip {
  margin-top: 18px;
  font-size: 12.5px;
  color: var(--ink-400);
  line-height: 1.6;
}

/* 英文模式：局部排版微调（英文单词更长，压缩一些字号与间距） */
html[lang="en"] .nav__link { padding: 0 12px; font-size: 14.5px; }
html[lang="en"] .logo__name { font-size: 15px; letter-spacing: 0; }
html[lang="en"] .logo__sub { letter-spacing: 1.2px; }
html[lang="en"] .hero__title { font-size: clamp(28px, 3.4vw, 46px); letter-spacing: -1px; }
html[lang="en"] .section-title { font-size: clamp(23px, 2.5vw, 33px); letter-spacing: -.6px; }
html[lang="en"] .advantage h3 { font-size: 15px; line-height: 1.4; }
html[lang="en"] .cat-card__name { font-size: 15px; }
html[lang="en"] .product-card__title { font-size: 13.5px; }
html[lang="en"] .step h3 { font-size: 15px; }
html[lang="en"] .mobile-menu__link-en { display: none; }
html[lang="en"] .contact-band h2 { font-size: clamp(22px, 2.5vw, 30px); }
html[lang="en"] .eyebrow,
html[lang="en"] .hero__eyebrow { letter-spacing: .8px; }

@media (max-width: 1024px) {
  .lang-switch--header { display: none; }
}

@media (max-width: 760px) {
  .contact-sheet { padding: 28px 22px 24px; }
  .contact-sheet__phone { font-size: 28px; }
  html[lang="en"] .hero__title { font-size: 22px; }
  html[lang="en"] .section-title { font-size: 20px; }
}

/* 英文模式下移动端排版修正：英文更长，需压缩避免溢出 */
@media (max-width: 760px) {
  html[lang="en"] .topbar__left { display: none; }
  html[lang="en"] .topbar__inner { justify-content: flex-end; }
  html[lang="en"] .logo { min-width: 0; flex: 1 1 auto; }
  html[lang="en"] .logo__text { min-width: 0; }
  html[lang="en"] .logo__name {
    font-size: 12.5px;
    line-height: 1.3;
    font-weight: 700;
    max-width: 190px;
    white-space: normal;
    word-break: break-word;
  }
  html[lang="en"] .logo__sub { display: none; }
  html[lang="en"] .logo__img { width: 56px; height: auto; }
  html[lang="en"] .burger { flex-shrink: 0; margin-left: 10px; }
  html[lang="en"] .hero__eyebrow { white-space: normal; text-align: center; }
}

@media (max-width: 420px) {
  html[lang="en"] .logo__name { font-size: 11.5px; max-width: 165px; }
}

/* 英文模式下分类卡片的英文副标题与主标题重复，隐藏副标题 */
html[lang="en"] .cat-card__en { display: none; }
html[lang="en"] .cat-card__name { margin-bottom: 2px; }
html[lang="en"] .section-label { letter-spacing: 1.8px; }
html[lang="en"] .footer__desc { max-width: 340px; }

/* a → button 改写后的样式补偿（保持原有外观） */
button.contact-card,
button.topbar__item,
button.header__cta,
button.mobile-menu__phone,
button.fab__btn {
  text-align: left;
  font-family: inherit;
}

button.contact-card {
  width: 100%;
  cursor: pointer;
}

button.mobile-menu__phone {
  width: 100%;
  cursor: pointer;
}

button.topbar__item {
  padding: 0;
  cursor: pointer;
}

button.header__cta,
button.fab__btn {
  cursor: pointer;
}

/* 移动端横向溢出修复：
   .mobile-menu 关闭时 transform: translateX(100%) 会跑到视口右侧，
   把 documentElement.scrollWidth 撑大。overflow-x: clip 不创建滚动容器，
   因此不会破坏 position: sticky 的导航吸顶。 */
html { overflow-x: clip; }
body { overflow-x: clip; }

@media (max-width: 760px) {
  .logo__img { width: 60px; }
  .logo__name {
    font-size: 13.5px;
    white-space: nowrap;
    letter-spacing: .2px;
  }
  .logo__sub { display: none; }
  .logo { gap: 10px; }

  /* 移动端触摸目标不小于 44px */
  .topbar__item { min-height: 32px; }
  .fab__btn { min-width: 46px; min-height: 46px; }
  .product-card__btn { min-height: 36px; }
  .chip { min-height: 34px; }
  .pager button { min-height: 42px; min-width: 42px; }
}

@media (max-width: 420px) {
  .logo__img { width: 52px; }
  .logo__name { font-size: 12.5px; letter-spacing: 0; }
  html[lang="en"] .logo__name { font-size: 11px; line-height: 1.25; }
  .header__inner { gap: 8px; }
}