/* ============================================================
   蓝科环保 — 主样式表 (style.css)
   工业暗色主题：深蓝 + 钢灰 + 白 + 橙
   架构：第三方模板模式 ({pboot:sitedomain}/skin/)
   ★ 直角为主，硬朗工业感
   ★ 响应式断点：768px
   ============================================================ */

/* ===== CSS Variables ===== */
:root {
  /* 主色系 */
  --navy: #1A2A3A;
  --navy-light: #1E3A5F;
  --navy-dark: #0D1520;
  --steel: #3A4A5A;
  --steel-light: #4A5A6A;
  --orange: #F97316;
  --orange-hover: #EA580C;
  --orange-dark: #C2410C;
  --white: #FFFFFF;
  --off-white: #F0F4F8;

  /* 背景 */
  --bg-body: #0A1018;
  --bg-section: #0D1520;
  --bg-section-alt: #111D2E;
  --bg-card: #152234;
  --bg-card-hover: #1A2D42;
  --bg-header: rgba(13, 21, 32, 0.95);
  --bg-footer: #080D14;

  /* 文字 */
  --text-primary: #FFFFFF;
  --text-secondary: #B0C4D8;
  --text-muted: #6B7D93;

  /* 边框 */
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);
  --border-orange: rgba(249, 115, 22, 0.3);

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-orange: 0 4px 20px rgba(249, 115, 22, 0.25);

  /* 圆角 */
  --radius: 0px;
  --radius-sm: 0px;
  --radius-md: 2px;

  /* 间距 */
  --section-pad: 80px;
  --container-max: 1200px;

  /* 过渡 */
  --transition: 200ms ease;
  --transition-slow: 350ms ease;

  /* 字体 */
  --font-heading: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", sans-serif;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-secondary);
  background: var(--bg-body);
  overflow-x: hidden;
}

::selection {
  background: var(--orange);
  color: var(--white);
}

/* 自定义滚动条 */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-body); }
::-webkit-scrollbar-thumb { background: var(--steel); }
::-webkit-scrollbar-thumb:hover { background: var(--steel-light); }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--orange); }

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

ul, ol { list-style: none; }

button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 12px;
  position: relative;
  padding-left: 32px;
}
.section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 2px;
  background: var(--orange);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 600px;
}

/* ===== Header & Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-header);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.header__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header__logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--orange), var(--orange-hover));
  display: flex;
  align-items: center;
  justify-content: center;
}
.header__logo-icon i {
  font-size: 1.4rem;
  color: var(--white);
}
.header__logo-text {
  display: flex;
  flex-direction: column;
}
.header__logo-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}
.header__logo-sub {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Nav */
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.header__nav-item {
  position: relative;
}
.header__nav-link {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  white-space: nowrap;
}
.header__nav-link:hover,
.header__nav-link.active { color: var(--orange); }

/* 下拉菜单 ★ 13.3: z-index */
.header__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition);
  z-index: 60;
}
.header__nav-item:hover .header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.header__dropdown a {
  display: block;
  padding: 10px 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}
.header__dropdown a:last-child { border-bottom: none; }
.header__dropdown a:hover {
  background: var(--bg-card-hover);
  color: var(--orange);
  padding-left: 20px;
}

/* Header Actions */
.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--orange);
  color: var(--white);
  transition: all var(--transition);
}
.header__btn:hover {
  background: var(--orange-hover);
  color: var(--white);
  box-shadow: var(--shadow-orange);
}

/* 汉堡菜单 ★ 13.4: 独立于 header__actions */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
  z-index: 110;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero / Banner ===== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero__swiper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero__slide {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 16, 24, 0.5) 0%,
    rgba(10, 16, 24, 0.3) 40%,
    rgba(10, 16, 24, 0.85) 100%
  );
  z-index: 2;
}

.hero__content {
  position: absolute;
  bottom: 20%;
  left: 0;
  right: 0;
  z-index: 3;
  padding: 0 20px;
}
.hero__content .container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero__title {
  font-size: 3rem;
  font-weight: 800;
  color: var(--white);
  max-width: 700px;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 550px;
  margin-bottom: 32px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__pagination {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  gap: 8px;
}
.hero__pagination .swiper-pagination-bullet {
  width: 40px;
  height: 3px;
  border-radius: 0;
  background: rgba(255,255,255,0.3);
  opacity: 1;
  transition: all var(--transition);
}
.hero__pagination .swiper-pagination-bullet-active {
  background: var(--orange);
  width: 60px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}
.btn--primary {
  background: var(--orange);
  color: var(--white);
}
.btn--primary:hover {
  background: var(--orange-hover);
  color: var(--white);
  box-shadow: var(--shadow-orange);
}
.btn--outline {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.3);
}
.btn--outline:hover {
  border-color: var(--orange);
  color: var(--orange);
}
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn--ghost:hover {
  border-color: var(--orange);
  color: var(--orange);
}
.btn--white {
  background: var(--white);
  color: var(--navy);
}
.btn--white:hover {
  background: var(--off-white);
  color: var(--navy);
}

/* ===== Sections ===== */
.section {
  padding: var(--section-pad) 0;
}
.section--dark { background: var(--bg-body); }
.section--alt { background: var(--bg-section); }
.section--navy { background: var(--bg-section-alt); }

/* ===== Stats Section ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 40px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.stat-item:hover {
  border-color: var(--border-orange);
  background: var(--bg-card-hover);
}
.stat-item__number {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-item__number .orange { color: var(--orange); }
.stat-item__label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ===== Card Grid ===== */
.card-grid { display: grid; gap: 24px; }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }

/* ===== Product / Category Card ===== */
.card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all var(--transition);
}
.card:hover {
  border-color: var(--border-orange);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-section);
}
.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.card:hover .card__image img {
  transform: scale(1.05);
}

.card__body { padding: 20px; }
.card__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 10px;
  background: rgba(249,115,22,0.15);
  color: var(--orange);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}
.card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.card__meta i { color: var(--orange); margin-right: 4px; }
.card__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--orange);
  margin-top: 12px;
  transition: gap var(--transition);
}
.card:hover .card__more { gap: 10px; }

/* ===== Category Card (with icon) ===== */
.cat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.cat-card:hover {
  border-color: var(--border-orange);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}
.cat-card__icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(249,115,22,0.1);
  margin-bottom: 16px;
}
.cat-card__icon i {
  font-size: 1.8rem;
  color: var(--orange);
}
.cat-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.cat-card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== About Section ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about__image {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border: 1px solid var(--border);
}
.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about__image-badge {
  position: absolute;
  bottom: 0;
  left: 0;
  background: var(--orange);
  color: var(--white);
  padding: 16px 32px;
  font-weight: 700;
  font-size: 1.2rem;
}
.about__certs {
  display: flex;
  gap: 20px;
  margin-top: 24px;
  flex-wrap: wrap;
}
.about__cert {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}
.about__cert i { color: var(--orange); font-size: 1.1rem; }

/* ===== Feature / Tech Cards ===== */
.features { display: grid; gap: 24px; }
.features--4 { grid-template-columns: repeat(4, 1fr); }
.feature-card {
  padding: 32px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: var(--border-orange);
  background: var(--bg-card-hover);
}
.feature-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(249,115,22,0.1);
  margin-bottom: 16px;
}
.feature-card__icon i { font-size: 1.5rem; color: var(--orange); }
.feature-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.feature-card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: var(--bg-section-alt);
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, var(--orange));
}
.cta-section__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-footer);
  border-top: 1px solid var(--border);
}
.footer__top-line {
  height: 2px;
  background: linear-gradient(to right, transparent, var(--orange), transparent);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1fr;
  gap: 40px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 60px 20px 40px;
}
.footer__col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--orange);
  display: inline-block;
}
.footer__brand-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer__social {
  display: flex;
  gap: 12px;
}
.footer__social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
}
.footer__social a:hover {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
}
.footer__links a {
  display: block;
  padding: 6px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: all var(--transition);
}
.footer__links a:hover {
  color: var(--orange);
  padding-left: 8px;
}
.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer__contact-item i {
  color: var(--orange);
  margin-top: 4px;
  flex-shrink: 0;
}
.footer__bottom {
  border-top: 1px solid var(--border);
  padding: 20px;
}
.footer__bottom-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 友情链接 */
.friend-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
}
.friend-links__label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}
.friend-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 4px 12px;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.friend-links a:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* ===== Inner Page Banner ===== */
.inner-banner {
  position: relative;
  height: 320px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  margin-top: 70px;
}
.inner-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10,16,24,0.6), rgba(10,16,24,0.9));
}
.inner-banner__content {
  position: relative;
  z-index: 2;
  text-align: center;
}
.inner-banner__title {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 8px;
}
.inner-banner__subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  background: var(--bg-section);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.breadcrumb .container {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--orange); }
.breadcrumb .separator { margin: 0 8px; color: var(--steel); }

/* ===== Sidebar Layout ===== */
.page-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  align-items: start;
}

/* Sidebar */
.sidebar {
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.sidebar__title {
  padding: 20px;
  background: var(--bg-section-alt);
  border-bottom: 1px solid var(--border);
}
.sidebar__title h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.sidebar__title p {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}
.sidebar__nav a {
  display: block;
  padding: 12px 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}
.sidebar__nav a:hover,
.sidebar__nav a.active {
  color: var(--orange);
  background: rgba(249,115,22,0.05);
  padding-left: 24px;
}

/* Main Content */
.main-content { min-width: 0; }

/* ===== Product Detail ===== */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.product-gallery__main {
  aspect-ratio: 4/3;
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-card);
}
.product-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-info__title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.product-info__specs {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}
.product-info__specs th,
.product-info__specs td {
  padding: 12px 16px;
  text-align: left;
  border: 1px solid var(--border);
  font-size: 0.9rem;
}
.product-info__specs th {
  background: var(--bg-section-alt);
  color: var(--text-primary);
  font-weight: 600;
  width: 140px;
}
.product-info__specs td {
  color: var(--text-secondary);
}

/* ===== Case List ===== */
.case-card {
  position: relative;
  display: block;
  aspect-ratio: 4/3;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.case-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-card:hover img { transform: scale(1.08); }
.case-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,16,24,0.9) 0%, rgba(10,16,24,0.2) 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  transition: all var(--transition);
}
.case-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}
.case-card__tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 3px 10px;
  background: var(--orange);
  color: var(--white);
  align-self: flex-start;
}

/* ===== News List ===== */
.news-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  transition: all var(--transition);
}
.news-item:hover {
  border-color: var(--border-orange);
  background: var(--bg-card-hover);
}
.news-item__image {
  aspect-ratio: 4/3;
  overflow: hidden;
  border: 1px solid var(--border);
}
.news-item__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.news-item:hover .news-item__image img { transform: scale(1.05); }
.news-item__body { display: flex; flex-direction: column; justify-content: center; }
.news-item__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.news-item__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item__date {
  font-size: 0.8rem;
  color: var(--steel);
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.pagination a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.pagination a:hover,
.pagination a.active {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
}

/* ===== No Data ===== */
.no-data {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.contact-info-card {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  margin-bottom: 16px;
  transition: all var(--transition);
}
.contact-info-card:hover { border-color: var(--border-orange); }
.contact-info__icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(249,115,22,0.1);
}
.contact-info__icon i { font-size: 1.2rem; color: var(--orange); }
.contact-info__text h4 {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.contact-info__text p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Contact Form */
.contact-form {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-section);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.form-control:focus { border-color: var(--orange); }
textarea.form-control { min-height: 120px; resize: vertical; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ===== About Page ===== */
.timeline {
  position: relative;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline__item {
  position: relative;
  padding-bottom: 32px;
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: -37px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--orange);
}
.timeline__year {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 4px;
}
.timeline__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Certificates Grid */
.certs-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cert-card {
  padding: 24px;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.cert-card:hover { border-color: var(--border-orange); }
.cert-card__icon {
  font-size: 2.5rem;
  color: var(--orange);
  margin-bottom: 12px;
}
.cert-card__title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.cert-card__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===== Service Page ===== */
.service-card {
  padding: 32px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.service-card:hover { border-color: var(--border-orange); }
.service-card__icon {
  font-size: 2rem;
  color: var(--orange);
  margin-bottom: 16px;
}
.service-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.service-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== Content Area (Detail) ===== */
.content-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.85;
}
.content-body img {
  max-width: 100%;
  margin: 20px 0;
}
.content-body p { margin-bottom: 16px; }
.content-body h2, .content-body h3 {
  margin: 28px 0 12px;
  color: var(--text-primary);
}
.content-body ul, .content-body ol {
  margin-bottom: 16px;
  padding-left: 20px;
}
.content-body ul li { list-style: disc; margin-bottom: 8px; }
.content-body ol li { list-style: decimal; margin-bottom: 8px; }

/* Meta bar */
.meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}
.meta-bar i { color: var(--orange); margin-right: 4px; }

/* Prev/Next */
.prev-next {
  margin-top: 40px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.prev-next a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}
.prev-next a:hover { color: var(--orange); }

/* ===== Search ===== */
.search-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto 40px;
}
.search-form input {
  flex: 1;
  padding: 12px 16px;
  font-size: 0.9rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.search-form input:focus { border-color: var(--orange); }
.search-form button {
  padding: 12px 24px;
  background: var(--orange);
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;
  transition: background var(--transition);
}
.search-form button:hover { background: var(--orange-hover); }

/* ===== Back to Top ===== */
.back-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--orange);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  cursor: pointer;
}
.back-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-top:hover {
  background: var(--orange-hover);
  transform: translateY(-2px);
}

/* ===== Online Service ===== */
.online-service {
  position: fixed;
  bottom: 90px;
  right: 30px;
  z-index: 90;
}
.online-service__btn {
  width: 52px;
  height: 52px;
  border-radius: 0;
  background: var(--orange);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow-orange);
  animation: pulse-orange 2s infinite;
}
.online-service__btn:hover {
  background: var(--orange-hover);
  transform: scale(1.05);
}

@keyframes pulse-orange {
  0%, 100% { box-shadow: 0 0 0 0 rgba(249,115,22,0.4); }
  70% { box-shadow: 0 0 0 14px rgba(249,115,22,0); }
}

/* ===== Loading & Lazy ===== */
.lazy-img {
  opacity: 0;
  transition: opacity 0.4s ease;
}
.lazy-img.loaded { opacity: 1; }

/* ===== Section header ===== */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header--left {
  text-align: left;
}

/* ===== Utility ===== */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-20 { margin-bottom: 20px; }
.divider {
  width: 60px;
  height: 3px;
  background: var(--orange);
  margin: 0 auto 32px;
}

/* ===== Counter Up Numbers ===== */
.countup {
  display: inline-block;
  transition: all 0.1s ease;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .features--4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .page-layout { grid-template-columns: 1fr; }
  .product-detail { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero__title { font-size: 2.4rem; }
}

@media (max-width: 768px) {
  :root { --section-pad: 48px; }

  /* 移动端导航 */
  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-card);
    flex-direction: column;
    align-items: stretch;
    padding: 80px 20px 20px;
    transition: right 0.3s ease;
    z-index: 105;
    overflow-y: auto;
    gap: 0;
  }
  .header__nav.active { right: 0; }

  .header__nav-link {
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
  }
  .header__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: transparent;
    border: none;
    padding-left: 16px;
    display: none;
  }
  .header__nav-item.active .header__dropdown { display: block; }
  .header__dropdown a {
    padding: 10px 0;
    border-bottom: none;
    font-size: 0.85rem;
  }
  .header__actions { display: none; }

  .hamburger { display: flex; }

  /* Banner */
  .hero { height: 70vh; min-height: 450px; }
  .hero__title { font-size: 1.8rem; }
  .hero__subtitle { font-size: 0.95rem; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }

  /* Sections */
  .section-title { font-size: 1.6rem; }

  .stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-item { padding: 24px 16px; }
  .stat-item__number { font-size: 2rem; }

  .card-grid--4,
  .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .features--4 { grid-template-columns: 1fr 1fr; }

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

  .news-item { grid-template-columns: 1fr; }
  .news-item__image { aspect-ratio: 16/9; }

  .inner-banner { height: 200px; }
  .inner-banner__title { font-size: 1.6rem; }

  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__bottom-inner { flex-direction: column; text-align: center; }

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

  .case-card { aspect-ratio: 16/9; }
}

@media (max-width: 480px) {
  .card-grid--4,
  .card-grid--3,
  .card-grid--2 { grid-template-columns: 1fr; }
  .features--4 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .hero__title { font-size: 1.5rem; }
  .hero { height: 60vh; min-height: 380px; }
  .certs-grid { grid-template-columns: 1fr; }
}

/* ===== AOS Overrides ===== */
[data-aos] { transition-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94); }

/* ===== Respect prefers-reduced-motion ===== */
@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;
  }
  .online-service__btn { animation: none; }
}