/**
 * 商业空间设计 — 专业工装设计公司官网
 * 深色专业基调：深灰 #1A1A1A + 钢蓝 #2C3E50 + 白 + 橙色点缀
 * 设计语言：商业白皮书式排版，大留白，信息清晰
 * 依赖：Swiper 11, AOS 2.3, Font Awesome 6 Free, jQuery 3.x
 */

/* ============================================================
   CSS 变量体系 — 商业空间专业暗色主题
   ============================================================ */
:root {
  /* 基底色 */
  --bg-deep: #0D1117;
  --bg-primary: #1A1A1A;
  --bg-secondary: #141414;
  --bg-card: #1E1E1E;
  --bg-card-hover: #252525;
  --bg-input: #1A1A1A;

  /* 品牌色 */
  --steel: #2C3E50;
  --steel-light: #3D5064;
  --steel-dim: rgba(44, 62, 80, 0.25);
  --orange: #E67E22;
  --orange-light: #F0A04B;
  --orange-dim: rgba(230, 126, 34, 0.15);
  --orange-glow: rgba(230, 126, 34, 0.3);

  /* 文字色阶 */
  --text-primary: #EAECEF;
  --text-secondary: #9BA3AF;
  --text-muted: #7A8290;
  --text-inverse: #0D1117;

  /* 边框 */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-card: rgba(255, 255, 255, 0.08);
  --border-steel: rgba(44, 62, 80, 0.4);
  --border-orange: rgba(230, 126, 34, 0.3);

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-orange: 0 0 24px rgba(230, 126, 34, 0.1);

  /* 圆角 — 小圆角专业感 */
  --radius-xs: 3px;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-none: 0px;

  /* 间距 */
  --section-py: 90px;
  --container-max: 1240px;
  --header-h: 72px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* 字体 — Inter(拉丁) + 优质中文字体栈 */
  --font-heading: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Source Han Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Consolas', monospace;
  --font-number: 'Inter', 'DIN Alternate', 'SF Mono', 'Helvetica Neue', sans-serif;
}

/* ============================================================
   全局重置
   ============================================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  background: var(--bg-deep);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 60% 40% at 20% 10%, rgba(44, 62, 80, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 80% 80%, rgba(230, 126, 34, 0.02) 0%, transparent 60%),
    var(--bg-deep);
  pointer-events: none;
}

::selection {
  background: rgba(230, 126, 34, 0.3);
  color: #fff;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.15); }

a { color: inherit; text-decoration: none; transition: color var(--duration-fast) var(--ease-out); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}
input::placeholder, textarea::placeholder {
  color: var(--text-muted);
  opacity: 1;
}

/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.02em;
}

.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 28px;
}

.section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 1.5px;
  background: var(--orange);
}

.section-title {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.03em;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
}

/* ============================================================
   布局容器
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 28px;
}

.section {
  padding: var(--section-py) 0;
  position: relative;
}

.section--dark {
  background: var(--bg-secondary);
}

.section--steel {
  background: rgba(44, 62, 80, 0.08);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

/* 区块分割线 */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-subtle) 20%, var(--border-subtle) 80%, transparent);
  margin: 0 auto;
  max-width: var(--container-max);
}

/* ============================================================
   Header 头部 — 深色固定导航
   ============================================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(13, 17, 23, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--duration-normal) var(--ease-out);
}

.header.scrolled {
  background: rgba(13, 17, 23, 0.97);
  box-shadow: 0 1px 30px rgba(0, 0, 0, 0.5);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 28px;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  margin-right: 48px;
}

.header__logo-icon {
  width: 38px;
  height: 38px;
  background: var(--orange);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  font-weight: 700;
}

.header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.header__logo-sub {
  font-size: 0.58rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange-light);
}

/* 主导航 */
.header__nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.header__nav-link {
  padding: 8px 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  font-weight: 500;
}

.header__nav-link:hover,
.header__nav-link.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

/* 导航下拉 */
.header__nav-item {
  position: relative;
}

.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  padding: 9px 0;
  background: rgba(20, 20, 20, 0.98);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--duration-normal) var(--ease-out);
  z-index: 60;
}

.header__dropdown a {
  display: block;
  padding: 10px 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
}

.header__dropdown a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

/* 头部右侧 CTA */
.header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 22px;
  background: var(--orange);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-xs);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.header__cta:hover {
  color: #fff;
  background: var(--orange-light);
  box-shadow: var(--shadow-orange);
  transform: translateY(-1px);
}

/* ============================================================
   汉堡菜单（移动端）
   ============================================================ */
.hamburger {
  display: none;
  width: 38px;
  height: 38px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 110;
  margin-left: 8px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--duration-normal) var(--ease-out);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端侧滑菜单 */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 82%;
  max-width: 340px;
  background: var(--bg-secondary);
  z-index: 120;
  transform: translateX(-100%);
  transition: transform var(--duration-normal) var(--ease-out);
  overflow-y: auto;
}

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

.mobile-nav__inner {
  padding: 24px;
  padding-top: 80px;
}

.mobile-nav__link {
  display: block;
  padding: 13px 16px;
  font-size: 1rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}

.mobile-nav__link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.03);
}

.mobile-nav__sub {
  padding-left: 16px;
  display: none;
}

.mobile-nav__sub.open {
  display: block;
}

.mobile-nav__sub a {
  display: block;
  padding: 10px 16px;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}

.mobile-nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  z-index: 115;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-nav__overlay.show {
  opacity: 1;
  pointer-events: auto;
}

/* ============================================================
   内页 Banner
   ============================================================ */
.inner-banner {
  position: relative;
  height: 340px;
  overflow: hidden;
  background: var(--bg-secondary);
  margin-top: var(--header-h);
}

.inner-banner__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.inner-banner__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,17,23,0.6) 0%, rgba(13,17,23,0.3) 50%, var(--bg-deep) 100%);
}

.inner-banner__content {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 28px;
}

.inner-banner__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}

.inner-banner__subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* 面包屑 */
.breadcrumb-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 13px 28px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.breadcrumb a:hover {
  color: var(--orange);
}

.breadcrumb i {
  font-size: 0.6rem;
}

/* ============================================================
   按钮系统
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-xs);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.btn--primary {
  background: var(--orange);
  color: #fff;
}

.btn--primary:hover {
  background: var(--orange-light);
  box-shadow: var(--shadow-orange);
  transform: translateY(-2px);
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-steel);
}

.btn--outline:hover {
  border-color: var(--orange);
  color: var(--orange);
  transform: translateY(-2px);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border-color: var(--border-steel);
}

.btn--white {
  background: #fff;
  color: var(--bg-deep);
}

.btn--white:hover {
  background: var(--text-primary);
  transform: translateY(-2px);
}

/* ============================================================
   卡片系统 — 深色专业感
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-steel);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.card--steel-border:hover {
  border-color: var(--steel-light);
  box-shadow: 0 4px 24px rgba(44, 62, 80, 0.2);
}

.card--orange-accent {
  border-top: 2px solid transparent;
}

.card--orange-accent:hover {
  border-top-color: var(--orange);
}

.card__image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--bg-secondary);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.card:hover .card__image img {
  transform: scale(1.04);
}

.card__image--square {
  aspect-ratio: 1;
}

.card__body {
  padding: 22px 20px;
}

.card__tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--orange);
  background: var(--orange-dim);
  border-radius: var(--radius-xs);
  margin-bottom: 10px;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  line-height: 1.4;
}

.card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 14px;
  padding: 10px 14px;
  border-top: 1px solid var(--border-steel);
  background: rgba(230, 126, 34, 0.08);
  border-radius: var(--radius-xs);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

.card__meta i {
  color: var(--orange);
  margin-right: 6px;
  font-size: 0.85rem;
}

.card__meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 项目卡片（首页用） */
.project-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.project-card:hover {
  border-color: var(--border-steel);
}

.project-card:hover .project-card__img {
  transform: scale(1.05);
}

.project-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, rgba(13,17,23,0.9) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
}

.project-card__type {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 4px;
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: #fff;
}

/* ============================================================
   首页 — Hero Banner
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 620px;
  max-height: 860px;
  overflow: hidden;
  background: var(--bg-deep);
}

.hero .swiper {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, rgba(13,17,23,0.25) 0%, rgba(13,17,23,0.12) 40%, rgba(13,17,23,0.9) 100%);
}

.hero__content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-bottom: 120px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 28px;
  padding-right: 28px;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5.5vw, 3.75rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.12;
  margin-bottom: 1rem;
  max-width: 680px;
  text-shadow: 0 2px 30px rgba(0,0,0,0.5);
}

.hero__subtitle {
  font-size: clamp(0.95rem, 1.6vw, 1.15rem);
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
  max-width: 540px;
  font-weight: 300;
  line-height: 1.6;
}

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

/* Hero Swiper 分页器 */
.hero-pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}

.hero-pagination .swiper-pagination-bullet {
  width: 44px;
  height: 2px;
  border-radius: 1px;
  background: rgba(255,255,255,0.3);
  opacity: 1;
  transition: all 0.3s;
}

.hero-pagination .swiper-pagination-bullet-active {
  width: 64px;
  background: var(--orange);
  box-shadow: 0 0 10px var(--orange);
}

/* 滚动指示器 */
.hero__scroll {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.35);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: scrollFloat 2s ease-in-out infinite;
}

.hero__scroll-line {
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, var(--orange), transparent);
}

@keyframes scrollFloat {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   首页 — 数据统计
   ============================================================ */
.stats-section {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-item {
  text-align: center;
  padding: 32px 16px;
  position: relative;
}

.stat-item::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--border-subtle);
}

.stat-item:last-child::after {
  display: none;
}

.stat-item__number {
  font-family: var(--font-number);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-item__number span {
  color: var(--orange);
}

.stat-item__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ============================================================
   首页 — 服务范围
   ============================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.service-card {
  text-align: center;
  padding: 36px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  transition: all var(--duration-normal) var(--ease-out);
}

.service-card:hover {
  border-color: var(--border-steel);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.service-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: var(--radius-xs);
  background: var(--steel-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--orange);
  transition: all var(--duration-normal);
}

.service-card:hover .service-card__icon {
  background: var(--orange-dim);
  box-shadow: var(--shadow-orange);
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================================
   首页 — 设计流程
   ============================================================ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: var(--border-steel);
  z-index: 0;
}

.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
  padding: 0 16px;
}

.process-step__num {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--border-steel);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-number);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: all var(--duration-normal);
}

.process-step:hover .process-step__num {
  border-color: var(--orange);
  background: var(--orange-dim);
  color: var(--orange);
}

.process-step__title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.process-step__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ============================================================
   首页 — 行业分类
   ============================================================ */
.industry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.industry-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
  cursor: pointer;
}

.industry-item:hover {
  border-color: var(--border-steel);
  background: var(--bg-card-hover);
}

.industry-item__icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-xs);
  background: var(--steel-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  font-size: 1rem;
  flex-shrink: 0;
}

.industry-item__name {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.industry-item__count {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* ============================================================
   首页 — 客户评价
   ============================================================ */
.review-card {
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--orange);
  transition: all var(--duration-normal);
}

.review-card:hover {
  border-color: var(--border-steel);
  background: var(--bg-card-hover);
  border-left-color: var(--orange-light);
}

.review-card__text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
  font-style: italic;
}

.review-card__text::before {
  content: '\201C';
  color: var(--orange);
  font-size: 1.5rem;
  font-weight: 700;
  margin-right: 4px;
}

.review-card__author {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.review-card__author-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
}

.review-card__author-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ============================================================
   首页 — 新闻资讯
   ============================================================ */
.news-item {
  display: flex;
  gap: 20px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast);
  margin-bottom: 10px;
}

.news-item:hover {
  border-color: var(--border-steel);
  background: var(--bg-card-hover);
}

.news-item__thumb {
  width: 140px;
  height: 100px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.news-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-item__info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.news-item__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.news-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-item__date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* ============================================================
   CTA 区块
   ============================================================ */
.cta-section {
  background: linear-gradient(135deg, var(--steel) 0%, #1A252F 100%);
  padding: 70px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(230, 126, 34, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section__title {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  color: #fff;
  margin-bottom: 1rem;
}

.cta-section__desc {
  color: rgba(255,255,255,0.65);
  margin-bottom: 28px;
  font-size: 1rem;
}

.cta-section .btn--primary {
  background: var(--orange);
  font-size: 1rem;
  padding: 14px 36px;
}

/* ============================================================
   列表页 — 网格布局
   ============================================================ */
.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.list-grid--2col {
  grid-template-columns: repeat(2, 1fr);
}

.list-grid--4col {
  grid-template-columns: repeat(4, 1fr);
}

.list-header {
  text-align: center;
  margin-bottom: 48px;
}

.list-header h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  margin-bottom: 0.5rem;
}

/* 子栏目过滤栏 */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-bar a {
  display: inline-flex;
  padding: 9px 22px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
  transition: all var(--duration-fast);
}

.filter-bar a:hover,
.filter-bar a.active {
  color: var(--orange);
  border-color: var(--orange);
  background: var(--orange-dim);
}

/* ============================================================
   项目详情页
   ============================================================ */
.project-detail {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 48px;
}

.project-detail__gallery {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.project-detail__gallery .swiper-slide {
  aspect-ratio: 16/10;
}

.project-detail__gallery .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-detail__thumbs {
  margin-top: 12px;
}

.project-detail__thumbs .swiper-slide {
  width: 80px;
  height: 56px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity var(--duration-fast);
  border: 2px solid transparent;
}

.project-detail__thumbs .swiper-slide-thumb-active {
  opacity: 1;
  border-color: var(--orange);
}

.project-detail__thumbs .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-detail__info {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  align-self: start;
}

.project-detail__title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.project-detail__params {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.project-detail__param {
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  text-align: center;
}

.project-detail__param-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.project-detail__param-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Tab 切换 */
.detail-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
  margin-top: 40px;
  gap: 0;
}

.detail-tabs__btn {
  padding: 14px 24px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--duration-fast);
}

.detail-tabs__btn.active {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.detail-tabs__btn:hover {
  color: var(--text-primary);
}

.tab-panel {
  padding: 28px 0;
  color: var(--text-secondary);
  line-height: 1.9;
}

.tab-panel.hidden {
  display: none;
}

/* 相关项目 */
.related-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 56px 0 24px;
  color: var(--text-primary);
}

/* ============================================================
   分页
   ============================================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  margin-top: 48px;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
}

.pagination a:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
}

.pagination .active {
  background: var(--orange);
  color: #fff;
  font-weight: 600;
}

.pagination .disabled {
  color: var(--text-muted);
  pointer-events: none;
}

/* ============================================================
   空状态
   ============================================================ */
.empty-state {
  text-align: center;
  padding: 80px 20px;
}

.empty-state i {
  font-size: 3rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: block;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ============================================================
   联系页面
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  transition: all var(--duration-fast);
}

.contact-info__item:hover {
  border-color: var(--border-steel);
}

.contact-info__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-xs);
  background: var(--steel-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
  flex-shrink: 0;
  font-size: 1rem;
}

.contact-info__label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.contact-info__value {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* 联系表单 */
.contact-form-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group label .required {
  color: var(--orange);
}

.form-control {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: all var(--duration-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-dim);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%235C6370' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* ============================================================
   搜索页
   ============================================================ */
.search-form-row {
  display: flex;
  gap: 12px;
  max-width: 640px;
  margin: 0 auto;
}

.search-input-wrap {
  position: relative;
  flex: 1;
}

.search-input-wrap i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-input-wrap input {
  width: 100%;
  padding: 15px 20px 15px 44px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
}

.search-input-wrap input:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-dim);
}

.search-result-item {
  display: flex;
  gap: 18px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast);
  margin-bottom: 10px;
}

.search-result-item:hover {
  border-color: var(--border-steel);
  background: var(--bg-card-hover);
}

.search-result-item__thumb {
  width: 110px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--bg-secondary);
}

.search-result-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.search-result-item__info {
  flex: 1;
  min-width: 0;
}

.search-result-item__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.search-result-item__date {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.search-result-item__desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   关于我们页
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--border-steel);
  border-radius: inherit;
  top: 12px;
  left: 12px;
  right: -12px;
  bottom: -12px;
  z-index: -1;
  pointer-events: none;
}

/* ============================================================
   Footer 底部
   ============================================================ */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
}

.footer__top-line {
  height: 2px;
  background: var(--orange);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
  padding: 60px 0 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: 28px;
  padding-right: 28px;
}

.footer__brand-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 16px 0;
}

.footer__col-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast);
}

.footer__links a:hover {
  color: var(--orange);
}

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.footer__contact-item i {
  color: var(--orange);
  margin-top: 3px;
  flex-shrink: 0;
  font-size: 0.85rem;
}

.footer__qrcode {
  width: 100px;
  height: 100px;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: #999;
  text-align: center;
}

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 18px 0;
}

.footer__bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 28px;
  font-size: 0.78rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 8px;
}

.footer__bottom a {
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

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

/* 友情链接 */
.friend-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  padding: 16px 0;
}

.friend-links__label {
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.friend-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color var(--duration-fast);
}

.friend-links a:hover {
  color: var(--orange);
}

/* ============================================================
   返回顶部 + 在线客服
   ============================================================ */
.back-top {
  position: fixed;
  right: 20px;
  bottom: 80px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-xs);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  cursor: pointer;
  z-index: 80;
  opacity: 0;
  pointer-events: none;
  transition: all var(--duration-normal);
}

.back-top.show {
  opacity: 1;
  pointer-events: auto;
}

.back-top:hover {
  background: var(--orange);
  color: #fff;
  border-color: var(--orange);
}

/* 在线客服按钮 */
.online-service {
  position: fixed;
  right: 20px;
  bottom: 132px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  z-index: 80;
  box-shadow: 0 2px 12px rgba(230, 126, 34, 0.35);
  transition: all var(--duration-normal);
}

.online-service:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 20px rgba(230, 126, 34, 0.5);
}

/* ============================================================
   动画效果
   ============================================================ */

/* 渐入上移 */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 橙色呼吸脉冲 */
@keyframes orangePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(230, 126, 34, 0.4); }
  70% { box-shadow: 0 0 0 14px rgba(230, 126, 34, 0); }
}

.btn--primary.pulse {
  animation: orangePulse 2s infinite;
}

/* Hero 文字入场 */
.hero__title { animation: fadeInUp 1s var(--ease-out) both; }
.hero__subtitle { animation: fadeInUp 1s var(--ease-out) 0.2s both; }
.hero__actions { animation: fadeInUp 0.8s var(--ease-out) 0.4s both; }

/* 微光扫过 */
@keyframes shimmerSweep {
  0% { transform: translateX(-100%) skewX(-15deg); }
  100% { transform: translateX(200%) skewX(-15deg); }
}

.shimmer-overlay {
  position: relative;
  overflow: hidden;
}

.shimmer-overlay::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.02) 40%,
    rgba(255, 255, 255, 0.04) 50%,
    rgba(255, 255, 255, 0.02) 60%,
    transparent 100%
  );
  transform: translateX(-100%) skewX(-15deg);
  pointer-events: none;
}

.shimmer-overlay:hover::after {
  animation: shimmerSweep 0.7s ease-in-out;
}

/* AOS 覆盖 */
[data-aos] {
  transition-timing-function: var(--ease-out);
}

/* ============================================================
   响应式 — 平板 (768px - 1023px)
   ============================================================ */
@media (max-width: 1023px) {
  :root { --section-py: 64px; }

  .header__nav,
  .header__actions {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .process-steps::before { display: none; }

  .industry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .stat-item:nth-child(2)::after { display: none; }

  .list-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-detail {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================================
   响应式 — 移动端 (< 768px)
   ============================================================ */
@media (max-width: 767px) {
  :root { --section-py: 50px; }

  .container { padding: 0 18px; }

  /* 头部与内容区左右边距对齐，避免整体视觉偏移 */
  .header__inner,
  .hero__content,
  .inner-banner__content {
    padding-left: 18px;
    padding-right: 18px;
  }

  /* 正文/详情内容在手机端不撑破页面 */
  .detail__body {
    overflow-wrap: break-word;
    word-break: break-word;
  }
  .detail__body table {
    max-width: 100%;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .detail__body img {
    max-width: 100%;
    height: auto;
  }

  .hero {
    height: 66vh;
    min-height: 400px;
  }

  .hero__content {
    padding-bottom: 90px;
  }

  .hero__scroll {
    display: none;
  }

  .inner-banner {
    height: 220px;
  }

  .services-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }

  /* 服务范围：手机端压缩为两行（3+2） */
  .service-card {
    padding: 20px 8px;
  }
  .service-card__icon {
    width: 42px;
    height: 42px;
    margin: 0 auto 8px;
    border-radius: 8px;
    font-size: 1rem;
  }
  .service-card__title {
    font-size: 0.82rem;
  }

  .process-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px 8px;
  }
  /* 设计流程：手机端压缩为两行（3+2） */
  .process-step__num {
    width: 40px;
    height: 40px;
    margin: 0 auto 10px;
    font-size: 1.05rem;
  }
  .process-step__title {
    font-size: 0.85rem;
  }
  .process-step__desc {
    font-size: 0.72rem;
  }

  .industry-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  /* 行业案例：手机端压缩 */
  .industry-item {
    padding: 12px 14px;
    gap: 10px;
  }
  .industry-item__icon {
    width: 34px;
    height: 34px;
    font-size: 0.85rem;
  }
  .industry-item__name {
    font-size: 0.85rem;
  }
  .industry-item__count {
    font-size: 0.7rem;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .stat-item::after { display: none; }
  .stat-item {
    padding: 16px 8px;
  }
  .stat-item__number {
    font-size: 1.6rem;
  }
  .stat-item__label {
    font-size: 0.75rem;
  }

  .list-grid {
    grid-template-columns: 1fr;
  }

  /* 首页项目案例：手机端一行两个、只保留前4个 */
  .list-grid.list-grid--home-cases,
  .list-grid.list-grid--projects {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .list-grid--home-cases .card:nth-child(n+5) {
    display: none;
  }
  .list-grid--home-cases .card__body,
  .list-grid--projects .card__body {
    padding: 12px;
  }
  .list-grid--home-cases .card__tag,
  .list-grid--projects .card__tag {
    margin-bottom: 6px;
    padding: 3px 8px;
    font-size: 0.66rem;
  }
  .list-grid--home-cases .card__title,
  .list-grid--projects .card__title {
    font-size: 0.95rem;
    margin-bottom: 4px;
  }
  .list-grid--home-cases .card__meta,
  .list-grid--projects .card__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
    margin-top: 10px;
    padding: 8px 10px;
    font-size: 0.76rem;
  }

  /* 客户评价（列表页）：手机端压缩 */
  .review-card {
    padding: 20px 18px;
  }
  .review-card__text {
    font-size: 0.88rem;
    line-height: 1.65;
    margin-bottom: 12px;
  }
  .review-card__author {
    padding-top: 12px;
  }

  /* 首页客户评价：手机端只留2条并压缩 */
  .list-grid--home-reviews .review-card:nth-child(n+3) {
    display: none;
  }
  .list-grid--home-reviews .review-card {
    padding: 20px 18px;
  }
  .list-grid--home-reviews .review-card__text {
    font-size: 0.88rem;
    line-height: 1.65;
    margin-bottom: 12px;
  }
  .list-grid--home-reviews .review-card__author {
    padding-top: 12px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  /* 底部快速链接：手机端排成一行 */
  .footer__links {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 0;
  }
  .footer__links a {
    font-size: 0.8rem;
  }

  .footer__bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .card__body { padding: 16px; }

  .contact-form-card { padding: 24px; }

  .news-item { flex-direction: column; }
  .news-item__thumb { width: 100%; height: 180px; }

  /* 新闻资讯（列表页）：手机端压缩 */
  .news-item {
    padding: 14px;
    margin-bottom: 8px;
  }
  .news-item__thumb {
    height: 130px;
  }
  .news-item__title {
    font-size: 0.92rem;
  }
  .news-item__desc {
    font-size: 0.78rem;
  }

  /* 首页新闻资讯：手机端只留2条并压缩 */
  .section--home-news .news-item {
    padding: 14px;
    margin-bottom: 8px;
  }
  .section--home-news .news-item__thumb {
    height: 130px;
  }
  .section--home-news .news-item__title {
    font-size: 0.92rem;
  }
  .section--home-news .news-item__desc {
    font-size: 0.78rem;
  }
  .section--home-news .news-item + .news-item + .news-item {
    display: none;
  }

  .search-result-item { flex-direction: column; }
  .search-result-item__thumb { width: 100%; height: 160px; }

  .project-detail__params {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 允许项目详情网格项收缩，避免 Swiper 幻灯片宽度被锁死后撑破页面 */
  .project-detail > * {
    min-width: 0;
  }
  .project-detail__gallery {
    max-width: 100%;
  }
  .project-detail__gallery .swiper-slide {
    aspect-ratio: 16/9;
  }

  .back-top { right: 12px; bottom: 60px; }
  .online-service { right: 12px; bottom: 110px; }

  /* CTA 商务咨询：手机端压缩 */
  .cta-section {
    padding: 40px 0;
  }
  .cta-section__title {
    font-size: 1.4rem;
    margin-bottom: 12px;
  }
  .cta-section__desc {
    font-size: 0.85rem;
    margin-bottom: 20px;
  }
  .cta-section .btn--primary {
    font-size: 0.9rem;
    padding: 12px 28px;
  }
}

/* ============================================================
   响应式 — 小屏 (< 375px)
   ============================================================ */
@media (max-width: 374px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .service-card { padding: 16px 6px; }
  .service-card__icon { width: 36px; height: 36px; font-size: 0.9rem; }
  .service-card__title { font-size: 0.75rem; }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
  .process-step__num { width: 34px; height: 34px; font-size: 0.95rem; margin-bottom: 8px; }
  .process-step__title { font-size: 0.78rem; }
  .process-step__desc { font-size: 0.68rem; }
}

/* ============================================================
   减少动画偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}