/* ============================================
   棱术餐厨设备 — 企业官方网站
   设计方向：黑金 · 高端 · 沉稳
   ============================================ */

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

:root {
  /* 主色调 */
  --bg-deep: #0a0a0a;
  --bg-surface: #111111;
  --bg-card: #181818;
  --bg-elevated: #1e1e1e;
  --gold: #bf9b60;
  --gold-light: #d4b87a;
  --gold-pale: #e8d5b7;
  --gold-dim: #8b723d;

  /* 文字 */
  --text-primary: #f0ede8;
  --text-secondary: #a09888;
  --text-muted: #6b6560;

  /* 边框 & 分割 */
  --border: #2a2520;
  --border-light: #353028;

  /* 布局 */
  --max-width: 1400px;
  --nav-height: 80px;

  /* 字体 */
  --font-cn: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --font-en: "Baskerville", "Palatino Linotype", "Georgia", "Times New Roman", serif;
  --font-number: "Didot", "Baskerville", "Palatino Linotype", serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-cn);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-weight: 600;
  line-height: 1.3;
}

h1 { font-size: clamp(2.4rem, 4vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

.section-title {
  text-align: center;
  margin-bottom: 72px;
}

.section-title h2 {
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: 3px;
  font-size: clamp(2rem, 3.5vw, 2.8rem);
}

.section-title .en {
  font-family: var(--font-en);
  font-size: 0.95rem;
  color: var(--gold);
  text-transform: uppercase;
  letter-spacing: 5px;
  font-style: italic;
}

.section-title .line {
  display: block;
  width: 72px;
  height: 2px;
  background: var(--gold);
  margin: 20px auto 0;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.95);
  border-bottom-color: var(--border-light);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 2px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dim));
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--bg-deep);
  font-weight: 900;
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  letter-spacing: 2px;
  position: relative;
  padding: 6px 0;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--gold-light);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* 移动端汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gold);
  transition: all 0.3s;
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 30%, rgba(191, 155, 96, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 30% 70%, rgba(139, 114, 61, 0.05) 0%, transparent 60%),
    var(--bg-deep);
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(191, 155, 96, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(191, 155, 96, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text .overline {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold-dim);
  padding: 6px 16px;
  margin-bottom: 28px;
  font-family: var(--font-en);
}

.hero-text h1 {
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: 3px;
}

.hero-text h1 .highlight {
  color: var(--gold);
  position: relative;
}

.hero-text .hero-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 460px;
}

.hero-btns {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gold);
  color: var(--bg-deep);
  padding: 14px 36px;
  font-size: 0.9rem;
  letter-spacing: 2px;
  font-weight: 600;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(191, 155, 96, 0.25);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  padding: 14px 36px;
  font-size: 0.9rem;
  letter-spacing: 2px;
  font-weight: 600;
  border: 1px solid var(--text-secondary);
  border-radius: 2px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 48px 40px;
  position: relative;
  text-align: center;
  max-width: 420px;
  width: 100%;
}

.hero-card .card-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold);
  color: var(--bg-deep);
  font-size: 0.7rem;
  letter-spacing: 3px;
  padding: 4px 20px;
  font-weight: 700;
  white-space: nowrap;
}

.hero-card .card-number {
  font-family: var(--font-number);
  font-size: 5rem;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 8px;
  font-weight: 400;
}

.hero-card .card-unit {
  font-size: 1rem;
  color: var(--text-secondary);
  letter-spacing: 2px;
  transition: opacity 0.3s ease;
}

.hero-card .card-info {
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-card .card-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 28px;
}

.hero-card .card-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-light);
}

.hero-card .card-dot.active {
  background: var(--gold);
}

/* Hero 区域标签 */
.hero-area {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 20px;
}

.area-tag {
  padding: 10px 24px;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 1rem;
  letter-spacing: 3px;
  border-radius: 2px;
}

.area-badge {
  padding: 14px 36px;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: 1.15rem;
  letter-spacing: 3px;
  border-radius: 2px;
  transition: all 0.3s;
}

.area-badge:hover {
  background: var(--gold);
  color: var(--bg-deep);
}

/* 海绵宝宝画风设备插图 */
/* --- Stats Strip --- */
.stats-strip {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-surface);
}

.stats-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 52px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-number);
  font-size: 2.4rem;
  color: var(--gold);
  margin-bottom: 4px;
}

.stat-number .plus {
  font-size: 1.4rem;
  vertical-align: top;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

/* --- Sections --- */
.section {
  padding: 120px 40px;
}

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

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* --- Service Cards --- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

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

@media (max-width: 1024px) {
  .service-grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .service-grid-4 {
    grid-template-columns: 1fr;
  }
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 48px 40px;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.service-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  font-size: 2.2rem;
  margin-bottom: 20px;
  display: block;
}

.service-card h3 {
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
}

/* ====== 首页热门设备卡片轮播 ====== */
.feat-carousel-wrap {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  overflow: hidden;
}

.feat-card-track {
  display: flex;
  transition: transform 0.5s ease;
}

.feat-card-page {
  min-width: 100%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feat-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  color: #fff;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.3s;
}

.feat-carousel-wrap:hover .feat-btn { opacity: 1; }
.feat-btn:hover { background: var(--gold); color: var(--bg-deep); }
.feat-prev { left: -8px; }
.feat-next { right: -8px; }

.feat-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}

.feat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: all 0.3s;
}

.feat-dot.active {
  background: var(--gold);
  width: 24px;
  border-radius: 4px;
}

@media (max-width: 768px) {
  .feat-card-page { grid-template-columns: 1fr; }
  .feat-btn { opacity: 1; width: 36px; height: 36px; }
}

/* ====== Apple 风格产品展示 ====== */
.apple-prod {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 40px;
  padding: 20px 0;
}

.apple-prod-rev {
  flex-direction: row-reverse;
}

.apple-prod-img {
  flex: 0 0 52%;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: 8px;
  background: #000;
}

.apple-prod-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #000;
}

.apple-prod-text {
  flex: 1;
  padding: 20px 0;
}

.apple-prod-text h3 {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.apple-prod-text p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 400px;
}

@media (max-width: 768px) {
  .apple-prod {
    flex-direction: column;
    gap: 20px;
    margin-bottom: 50px;
  }
  .apple-prod-img {
    flex: none;
    width: 100%;
  }
  .apple-prod-text h3 {
    font-size: 1.3rem;
  }
}

/* 产品卡片网格 */
.prod-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.prod-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.4s;
}

.prod-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}

.prod-card-img {
  aspect-ratio: 4/3;
  background: #000;
  overflow: hidden;
}

.prod-card-img {
  position: relative;
}

.prod-card-img::after {
  content: '🔍 点击放大';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  letter-spacing: 1px;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 1;
}

.prod-card-img:hover::after {
  opacity: 1;
}

.prod-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transition: transform 0.4s;
}

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

.prod-card-info {
  padding: 28px 32px;
}

.prod-card-info h3 {
  font-size: 1.1rem;
  letter-spacing: 1px;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.prod-card-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

@media (max-width: 1024px) {
  .prod-card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .prod-card-grid { grid-template-columns: 1fr; }
}

/* 图片灯箱放大 */
.img-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.img-lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.img-lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
}

.img-lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 2rem;
  color: #fff;
  cursor: pointer;
  z-index: 1;
  transition: color 0.3s;
}

.img-lightbox-close:hover {
  color: var(--gold);
}

/* --- Product Cards --- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: 0 50px;
  max-width: 1000px;
  margin: 0 auto;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: all 0.4s;
  display: flex;
  flex-direction: row;
}

.product-card:nth-child(even) {
  flex-direction: row-reverse;
}

.product-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}

.product-img {
  width: 45%;
  min-height: 360px;
  background: var(--bg-elevated);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

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

.product-img .tag {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--gold);
  color: var(--bg-deep);
  font-size: 0.7rem;
  padding: 4px 10px;
  font-weight: 700;
  letter-spacing: 1px;
  z-index: 2;
  border-radius: 2px;
}

.product-info {
  padding: 36px 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.product-info h3 {
  margin-bottom: 10px;
  letter-spacing: 1px;
  font-size: 1.2rem;
}

.product-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
}

@media (max-width: 768px) {
  .product-card {
    flex-direction: column;
  }
  .product-img {
    width: 100%;
    min-height: 280px;
  }
  .product-info {
    padding: 24px;
  }
}

/* --- Case Cards --- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.4s;
  cursor: pointer;
}

.case-card:hover {
  border-color: var(--gold-dim);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

/* ====== Apple 风格案例卡片 ====== */
.apple-case {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
  margin-bottom: 2px;
  overflow: hidden;
}

.apple-case-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.apple-case-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.apple-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(10,10,10,0.92) 0%,
    rgba(10,10,10,0.75) 45%,
    rgba(10,10,10,0.35) 70%,
    rgba(10,10,10,0.15) 100%
  );
}

.apple-case.apple-reverse .apple-overlay {
  background: linear-gradient(
    270deg,
    rgba(10,10,10,0.92) 0%,
    rgba(10,10,10,0.75) 45%,
    rgba(10,10,10,0.35) 70%,
    rgba(10,10,10,0.15) 100%
  );
}

.apple-case-content {
  position: relative;
  z-index: 1;
  grid-column: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 64px;
  max-width: 600px;
}

.apple-case.apple-reverse .apple-case-content {
  grid-column: 2;
}

.apple-tag {
  font-size: 0.7rem;
  letter-spacing: 4px;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.apple-case-content h2 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
  letter-spacing: 2px;
  line-height: 1.15;
}

.apple-case-content h3 {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 400;
  color: #c0b8a8;
  margin-bottom: 28px;
  letter-spacing: 1px;
}

.apple-case-content p {
  font-size: 0.95rem;
  color: #a09888;
  line-height: 1.9;
  margin-bottom: 36px;
  max-width: 480px;
}

.apple-stats {
  display: flex;
  gap: 40px;
}

.apple-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.apple-stat strong {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
}

.apple-stat span {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* 响应式 */
@media (max-width: 768px) {
  .apple-case {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .apple-overlay {
    background: linear-gradient(0deg, rgba(10,10,10,0.95) 0%, rgba(10,10,10,0.5) 50%, rgba(10,10,10,0.2) 100%);
  }
  .apple-case-content {
    grid-column: 1;
    padding: 60px 28px 40px;
    margin-top: auto;
  }
  .apple-case-content h2 {
    font-size: 1.8rem;
  }
  .apple-stats {
    gap: 24px;
  }
}

.case-info {
  padding: 28px;
}

.case-info .case-tag {
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--gold);
  margin-bottom: 8px;
}

.case-info h3 {
  margin-bottom: 8px;
}

.case-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* --- Contact Section --- */
/* 联系信息横排 */
.contact-info-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px 24px;
  transition: all 0.35s ease;
  cursor: pointer;
}

.contact-info-item:hover {
  border-color: var(--gold);
  box-shadow: 0 0 20px rgba(191,155,96,0.15), inset 0 0 20px rgba(191,155,96,0.03);
  transform: translateY(-2px);
}

.contact-info-item span {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.contact-info-item h4 {
  font-size: 0.75rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-info-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* 表单 */
.form-card-full {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 40px;
  max-width: 100%;
}

.form-card-full h3 {
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.form-card-full .form-subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 28px;
}

.form-iframe-wrapper {
  width: 100%;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.form-iframe-wrapper iframe {
  width: 100%;
  height: 600px;
  border: none;
  display: block;
}

/* ====== 自建询价表单 ====== */
.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 温馨提示条 */
.form-notice {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(191, 155, 96, 0.08);
  border: 1px solid rgba(191, 155, 96, 0.25);
  border-left: 3px solid var(--gold);
  border-radius: 4px;
  padding: 14px 16px;
  margin-bottom: 24px;
}

.form-notice .notice-icon {
  font-size: 1.2rem;
  line-height: 1.6;
  flex-shrink: 0;
}

.form-notice p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

.form-notice a,
.consent-text a {
  color: var(--gold);
  text-decoration: underline;
}

.form-notice a:hover,
.consent-text a:hover {
  color: var(--gold-light);
}

/* 同意复选框 */
.consent-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  padding: 12px 16px;
  background: #141414;
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.2s;
}

.consent-check:hover {
  border-color: rgba(191, 155, 96, 0.4);
}

.consent-check input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  min-width: 18px;
  margin-top: 2px;
  border: 1px solid var(--text-muted);
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: all 0.2s;
}

.consent-check input[type="checkbox"]:checked {
  background: var(--gold);
  border-color: var(--gold);
}

.consent-check input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-deep);
  font-size: 12px;
  font-weight: 700;
}

.consent-check input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.consent-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
}

.form-group .required {
  color: #e74c3c;
}

.inquiry-form input,
.inquiry-form textarea {
  background: #0f0f0f;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
  outline: none;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
  border-color: var(--gold);
}

.inquiry-form input::placeholder,
.inquiry-form textarea::placeholder {
  color: var(--text-muted);
}

.inquiry-form textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  font-size: 0.8rem;
  color: #e74c3c;
  min-height: 1em;
}

.btn-submit {
  align-self: flex-start;
  min-width: 180px;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  padding: 14px 28px;
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.privacy-notice {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
  line-height: 1.6;
}

/* 提交成功 */
.form-success {
  text-align: center;
  padding: 60px 20px;
}

.success-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--bg-deep);
  font-size: 2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.form-success h3 {
  margin-bottom: 8px;
}

.form-success p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.btn-restart {
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  padding: 10px 24px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.3s;
}

.btn-restart:hover {
  background: var(--gold);
  color: var(--bg-deep);
}

/* ====== 隐私政策页面 ====== */
.privacy-content {
  max-width: 780px;
  margin: 0 auto;
}

.privacy-content .privacy-update {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 32px;
  text-align: right;
}

.privacy-content h2 {
  font-size: 1.2rem;
  margin: 36px 0 16px;
  letter-spacing: 1px;
  color: var(--text-primary);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.privacy-content h2:first-of-type {
  margin-top: 0;
}

.privacy-content p {
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.privacy-content ul {
  list-style: none;
  margin: 0 0 16px;
}

.privacy-content ul li {
  color: var(--text-secondary);
  line-height: 2;
  padding-left: 20px;
  position: relative;
  font-size: 0.95rem;
}

.privacy-content ul li::before {
  content: '·';
  position: absolute;
  left: 6px;
  color: var(--gold);
  font-weight: 700;
}

@media (max-width: 768px) {
  .contact-info-row { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .contact-info-item { padding: 16px 18px; }
  .form-card-full { padding: 24px 20px; }
  .form-iframe-wrapper iframe { height: 480px; }
  .contact-info-item span { font-size: 1.2rem; }
}
@media (max-width: 480px) {
  .contact-info-row { grid-template-columns: 1fr; }
  .form-card-full { padding: 20px 16px; }
  .form-iframe-wrapper iframe { height: 420px; }
}

/* --- Footer --- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 80px 40px 30px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 56px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.8;
}

.footer-col h4 {
  font-size: 0.8rem;
  letter-spacing: 2px;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.3s;
}

.footer-col ul li a:hover {
  color: var(--gold-light);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom .filing-links {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  text-align: right;
}

.footer-bottom .filing-links a,
.footer-bottom .filing-links .police-filing {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-bottom .police-filing {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.footer-bottom .police-filing-icon {
  width: 18px;
  height: 18px;
  object-fit: contain;
  vertical-align: middle;
}

.footer-bottom .filing-links a:hover {
  color: var(--gold-light);
}

@media (max-width: 600px) {
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .footer-bottom .filing-links {
    align-items: flex-start;
    text-align: left;
  }
}

/* --- Page Hero (内页通用) --- */
.page-hero {
  padding: 180px 40px 100px;
  text-align: center;
  position: relative;
  background:
    radial-gradient(ellipse at center top, rgba(191, 155, 96, 0.08) 0%, transparent 70%),
    var(--bg-surface);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  margin-bottom: 16px;
  letter-spacing: 6px;
  font-size: clamp(2.4rem, 5vw, 3.8rem);
}

.page-hero .breadcrumb {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.page-hero .breadcrumb a {
  color: var(--gold);
  text-decoration: none;
}

.page-hero .breadcrumb span {
  margin: 0 8px;
  color: var(--text-muted);
}

/* --- About Page --- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  border-radius: 6px;
  overflow: hidden;
}

/* 轮播容器 */
.about-carousel {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid var(--border);
  user-select: none;
}

.about-carousel-track {
  display: flex;
  height: 100%;
  transition: transform 0.4s ease;
  cursor: grab;
}

.about-carousel-track:active {
  cursor: grabbing;
}

.about-slide {
  min-width: 100%;
  height: 100%;
}

.about-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  pointer-events: none;
}

/* 图片裁剪位置 */
.slide-crop-top img {
  object-position: top center;
}
.slide-crop-center img {
  object-position: center center;
}

/* 左右按钮 */
.about-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  color: #fff;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 3;
  opacity: 0;
  transition: opacity 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-carousel:hover .about-carousel-btn {
  opacity: 1;
}

.about-carousel-btn:hover {
  background: var(--gold);
  color: var(--bg-deep);
}

.about-carousel-prev { left: 10px; }
.about-carousel-next { right: 10px; }

/* 圆点指示器 */
.about-carousel-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 3;
}

.about-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all 0.3s;
}

.about-dot.active {
  background: var(--gold);
  width: 24px;
  border-radius: 4px;
}

.about-text h2 {
  margin-bottom: 20px;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.value-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: all 0.3s;
}

.value-item:hover {
  border-color: var(--gold-dim);
}

.value-item .value-icon {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.value-item h4 {
  font-size: 0.9rem;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.value-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-text .hero-desc {
    max-width: 100%;
    margin-inline: auto;
  }
  .hero-btns {
    justify-content: center;
  }
  .hero-visual {
    display: none;
  }
  .stats-inner {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-grid,
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-intro {
    grid-template-columns: 1fr;
  }
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
  }

  .nav-links { display: none; }
  .hamburger { display: flex; }

/* 独立移动菜单 */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(10,10,10,0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  display: block;
  width: 220px;
  text-align: center;
  padding: 16px 0;
  font-size: 1.1rem;
  color: #ccc;
  text-decoration: none;
  letter-spacing: 4px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s;
}

.mobile-menu a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.mobile-menu a:last-child {
  margin-top: 20px;
  border: 1px solid var(--gold);
  color: var(--gold);
  padding: 12px 0;
}

.mobile-menu a:last-child:hover {
  background: var(--gold);
  color: #000;
}

.mobile-menu-close {
  position: absolute;
  top: 24px;
  right: 28px;
  font-size: 2rem;
  color: #fff;
  cursor: pointer;
  z-index: 1;
  transition: color 0.3s;
}
.mobile-menu-close:hover { color: var(--gold); }

  .hamburger {
    display: flex;
    position: relative;
    z-index: 1001;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

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

  .service-grid,
  .product-grid {
    grid-template-columns: 1fr;
  }

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

  .stats-inner {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .section {
    padding: 60px 20px;
  }

  .section-title {
    margin-bottom: 36px;
  }

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

@media (max-width: 480px) {
  .stats-inner {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .hero-btns {
    flex-direction: column;
    align-items: center;
  }
  .values-grid {
    grid-template-columns: 1fr;
  }
}

/* ====== 全局手机适配 ====== */
@media (max-width: 768px) {
  /* 导航 */
  .nav-inner { padding: 0 20px; }
  .logo span:last-child { font-size: 1rem; }

  /* Hero 首页 */
  .hero-content { padding: 60px 20px; }
  .hero-text h1 { font-size: 1.8rem; }
  .hero-text .hero-desc { font-size: 0.9rem; }
  .hero-btns { flex-direction: column; align-items: flex-start; }
  .hero-visual { display: none; }

  /* 数据条 */
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 16px; padding: 24px 20px; }
  .stat-number { font-size: 1.8rem; }

  /* 标题 */
  .section-title h2 { font-size: 1.5rem; }
  .section { padding: 60px 20px; }
  .section-dark { border-top: 1px solid rgba(255,255,255,0.06); border-bottom: 1px solid rgba(255,255,255,0.06); }

  /* 服务卡片 */
  .service-grid { grid-template-columns: 1fr; }
  .service-card { padding: 28px 24px; }

  /* 产品卡片网格 */
  .prod-card-grid { grid-template-columns: 1fr; }

  /* 首页卡片轮播 */
  .feat-card-page { grid-template-columns: 1fr; }

  /* 覆盖区域 */
  .area-badge { padding: 10px 24px; font-size: 0.9rem; }

  /* Page Hero 内页 */
  .page-hero { padding: 120px 20px 60px; }
  .page-hero h1 { font-size: 1.8rem; }

  /* 关于我们 */
  .about-intro { grid-template-columns: 1fr; }
  .about-carousel { aspect-ratio: 16/10; }

  /* Apple案例 */
  .apple-case { grid-template-columns: 1fr; min-height: auto; }
  .apple-overlay { background: rgba(10,10,10,0.82); }
  .apple-case-content { grid-column: 1; padding: 80px 24px 40px; margin-top: 200px; }
  .apple-case-content h2 { font-size: 1.6rem; }
  .apple-stats { gap: 20px; flex-wrap: wrap; }

  /* 联系页 */
  .contact-info-row { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .contact-info-item { padding: 14px 16px; }

  /* 页脚 */
  .footer-inner { grid-template-columns: repeat(2, 1fr); }
  .footer { padding: 40px 20px 20px; }
}

@media (max-width: 480px) {
  .stats-inner { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .contact-info-row { grid-template-columns: 1fr; }
  .hero-text h1 { font-size: 1.5rem; }
  .apple-case-content { margin-top: 150px; padding: 60px 20px 30px; }
  .apple-case-content h2 { font-size: 1.3rem; }
  .apple-stat strong { font-size: 1.2rem; }
  .area-badge { padding: 8px 18px; font-size: 0.8rem; }
}