/* ===================================
   17C 官网 - 主样式表
   高端极简 · 深灰+香槟金+纯黑
=================================== */

:root {
  --color-black: #0a0a0a;
  --color-deep-gray: #1a1a1a;
  --color-mid-gray: #2a2a2a;
  --color-gray: #3a3a3a;
  --color-light-gray: #888888;
  --color-silver: #b0b0b0;
  --color-off-white: #f5f0e8;
  --color-white: #ffffff;
  --color-gold: #c9a96e;
  --color-gold-light: #e0c898;
  --color-gold-dark: #a07840;
  --font-serif: 'Georgia', 'Times New Roman', 'SimSun', serif;
  --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
  --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --shadow-gold: 0 4px 24px rgba(201, 169, 110, 0.15);
  --shadow-dark: 0 8px 40px rgba(0, 0, 0, 0.4);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-black);
  color: var(--color-off-white);
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--color-black); }
::-webkit-scrollbar-thumb { background: var(--color-gold-dark); border-radius: 2px; }

/* ===== 通用容器 ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-sm {
  padding: 60px 0;
}

/* ===== 标题系统 ===== */
.section-label {
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-gold);
  font-family: var(--font-sans);
  display: block;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 400;
  line-height: 1.3;
  color: var(--color-off-white);
  margin-bottom: 20px;
}

.section-title .gold {
  color: var(--color-gold);
}

.section-desc {
  font-size: 15px;
  color: var(--color-silver);
  line-height: 1.9;
  max-width: 600px;
}

/* ===== 分隔线 ===== */
.divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-gold), transparent);
  margin: 24px 0;
}

.divider-center {
  margin: 24px auto;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 36px;
  font-size: 13px;
  letter-spacing: 2px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
  text-decoration: none;
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold));
  color: var(--color-black);
  font-weight: 600;
}

.btn-gold:hover {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

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

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

/* ===== 顶部公告条 ===== */
.top-bar {
  background: var(--color-mid-gray);
  padding: 10px 0;
  text-align: center;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--color-gold);
  border-bottom: 1px solid rgba(201, 169, 110, 0.2);
}

/* ===== 导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(201, 169, 110, 0.15);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(10, 10, 10, 0.98);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo-text {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 400;
  color: var(--color-gold);
  letter-spacing: 4px;
}

.nav-logo-sub {
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--color-silver);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 13px;
  letter-spacing: 1.5px;
  color: var(--color-silver);
  position: relative;
  padding-bottom: 4px;
}

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

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

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

.nav-cta {
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--color-gold);
  color: var(--color-gold) !important;
  font-size: 12px !important;
  letter-spacing: 2px;
}

.nav-cta:hover {
  background: var(--color-gold) !important;
  color: var(--color-black) !important;
}

.nav-cta::after {
  display: none !important;
}

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-gold);
  transition: var(--transition);
}

/* ===== 搜索框 ===== */
.search-bar {
  background: var(--color-deep-gray);
  border-bottom: 1px solid rgba(201, 169, 110, 0.1);
  padding: 14px 0;
}

.search-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 600px;
  margin: 0 auto;
  background: var(--color-mid-gray);
  border: 1px solid rgba(201, 169, 110, 0.2);
  padding: 10px 20px;
  transition: var(--transition);
}

.search-inner:focus-within {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 2px rgba(201, 169, 110, 0.1);
}

.search-icon {
  color: var(--color-gold);
  font-size: 16px;
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--color-off-white);
  font-size: 14px;
  font-family: var(--font-sans);
  letter-spacing: 1px;
}

.search-input::placeholder {
  color: var(--color-light-gray);
  font-size: 13px;
}

.search-btn {
  background: var(--color-gold);
  color: var(--color-black);
  border: none;
  padding: 6px 18px;
  font-size: 12px;
  letter-spacing: 1.5px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: var(--transition);
  flex-shrink: 0;
}

.search-btn:hover {
  background: var(--color-gold-light);
}

/* ===== HERO BANNER ===== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

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

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 10, 10, 0.85) 0%,
    rgba(10, 10, 10, 0.5) 50%,
    rgba(10, 10, 10, 0.7) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(201, 169, 110, 0.4);
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--color-gold);
  margin-bottom: 32px;
}

.hero-badge::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--color-gold);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(40px, 6vw, 80px);
  font-weight: 400;
  line-height: 1.15;
  color: var(--color-off-white);
  margin-bottom: 24px;
}

.hero-title .brand {
  color: var(--color-gold);
  display: block;
}

.hero-subtitle {
  font-size: 15px;
  color: var(--color-silver);
  line-height: 1.9;
  margin-bottom: 48px;
  max-width: 500px;
}

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

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--color-silver);
  font-size: 11px;
  letter-spacing: 2px;
  animation: scrollBounce 2s infinite;
}

.hero-scroll::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gold), transparent);
}

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

/* ===== 统计数字 ===== */
.stats-bar {
  background: var(--color-deep-gray);
  border-top: 1px solid rgba(201, 169, 110, 0.15);
  border-bottom: 1px solid rgba(201, 169, 110, 0.15);
  padding: 40px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: 20px;
  border-right: 1px solid rgba(201, 169, 110, 0.1);
}

.stat-item:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 40px;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--color-light-gray);
}

/* ===== 服务区域 ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 60px;
}

.service-card {
  position: relative;
  overflow: hidden;
  background: var(--color-deep-gray);
  aspect-ratio: 4/3;
  cursor: pointer;
}

.service-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.service-card:hover img {
  transform: scale(1.08);
}

.service-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,0.9) 0%, rgba(10,10,10,0.2) 60%, transparent 100%);
  transition: var(--transition);
}

.service-card:hover .service-card-overlay {
  background: linear-gradient(to top, rgba(10,10,10,0.95) 0%, rgba(10,10,10,0.4) 60%, rgba(10,10,10,0.1) 100%);
}

.service-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
}

.service-card-num {
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--color-gold);
  margin-bottom: 8px;
}

.service-card-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-off-white);
  margin-bottom: 8px;
  line-height: 1.3;
}

.service-card-desc {
  font-size: 13px;
  color: var(--color-silver);
  line-height: 1.7;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.4s ease;
  opacity: 0;
}

.service-card:hover .service-card-desc {
  max-height: 80px;
  opacity: 1;
}

/* ===== 流程区域 ===== */
.process-section {
  background: var(--color-deep-gray);
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-top: 60px;
  position: relative;
}

.process-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold-dark), var(--color-gold), var(--color-gold-dark), transparent);
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step-num {
  width: 56px;
  height: 56px;
  border: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-gold);
  background: var(--color-deep-gray);
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.process-step:hover .process-step-num {
  background: var(--color-gold);
  color: var(--color-black);
}

.process-step-title {
  font-size: 16px;
  color: var(--color-off-white);
  margin-bottom: 12px;
  font-family: var(--font-serif);
}

.process-step-desc {
  font-size: 13px;
  color: var(--color-light-gray);
  line-height: 1.8;
}

/* ===== 视频卡片区域 ===== */
.videos-section {
  background: var(--color-black);
}

.videos-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
}

.videos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.video-card {
  background: var(--color-deep-gray);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid rgba(201, 169, 110, 0.08);
}

.video-card:hover {
  border-color: rgba(201, 169, 110, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-dark);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.video-card:hover .video-thumb img {
  transform: scale(1.05);
}

.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 10, 10, 0.4);
  opacity: 0;
  transition: var(--transition);
}

.video-card:hover .video-play-btn {
  opacity: 1;
}

.video-play-icon {
  width: 64px;
  height: 64px;
  border: 2px solid var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201, 169, 110, 0.15);
  backdrop-filter: blur(4px);
  transition: var(--transition);
}

.video-play-icon svg {
  width: 24px;
  height: 24px;
  fill: var(--color-gold);
  margin-left: 4px;
}

.video-card:hover .video-play-icon {
  background: var(--color-gold);
  transform: scale(1.1);
}

.video-card:hover .video-play-icon svg {
  fill: var(--color-black);
}

.video-duration {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(10, 10, 10, 0.8);
  color: var(--color-off-white);
  font-size: 11px;
  padding: 3px 8px;
  letter-spacing: 1px;
}

.video-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--color-gold);
  color: var(--color-black);
  font-size: 10px;
  padding: 3px 10px;
  letter-spacing: 1.5px;
  font-weight: 600;
}

.video-info {
  padding: 20px;
}

.video-category {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--color-gold);
  margin-bottom: 8px;
}

.video-title {
  font-size: 15px;
  color: var(--color-off-white);
  line-height: 1.5;
  margin-bottom: 12px;
  font-family: var(--font-serif);
}

.video-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--color-light-gray);
}

.video-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ===== 隐奢空间 ===== */
.space-section {
  background: var(--color-deep-gray);
  overflow: hidden;
}

.space-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  min-height: 600px;
}

.space-image {
  position: relative;
  overflow: hidden;
}

.space-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.space-image:hover img {
  transform: scale(1.04);
}

.space-content {
  padding: 80px 60px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.space-features {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.space-feature {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.space-feature-icon {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(201, 169, 110, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-gold);
  font-size: 16px;
}

.space-feature-text h4 {
  font-size: 15px;
  color: var(--color-off-white);
  margin-bottom: 6px;
  font-family: var(--font-serif);
}

.space-feature-text p {
  font-size: 13px;
  color: var(--color-light-gray);
  line-height: 1.7;
}

/* ===== 评价区域 ===== */
.reviews-section {
  background: var(--color-black);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.review-card {
  background: var(--color-deep-gray);
  padding: 36px;
  border: 1px solid rgba(201, 169, 110, 0.08);
  position: relative;
  transition: var(--transition);
}

.review-card:hover {
  border-color: rgba(201, 169, 110, 0.25);
  box-shadow: var(--shadow-gold);
}

.review-card::before {
  content: '\201C';
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 80px;
  color: rgba(201, 169, 110, 0.1);
  font-family: var(--font-serif);
  line-height: 1;
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.review-stars span {
  color: var(--color-gold);
  font-size: 14px;
}

.review-text {
  font-size: 14px;
  color: var(--color-silver);
  line-height: 1.9;
  margin-bottom: 24px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-black);
  font-family: var(--font-serif);
  font-weight: 600;
  flex-shrink: 0;
}

.review-author-info h5 {
  font-size: 14px;
  color: var(--color-off-white);
  margin-bottom: 3px;
}

.review-author-info span {
  font-size: 12px;
  color: var(--color-light-gray);
  letter-spacing: 1px;
}

.review-video-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--color-gold);
  margin-top: 12px;
  padding: 4px 10px;
  border: 1px solid rgba(201, 169, 110, 0.25);
}

/* ===== 案例区域 ===== */
.cases-section {
  background: var(--color-deep-gray);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 60px;
}

.case-card {
  background: var(--color-mid-gray);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid rgba(201, 169, 110, 0.06);
}

.case-card:hover {
  border-color: rgba(201, 169, 110, 0.25);
  transform: translateY(-6px);
  box-shadow: var(--shadow-dark);
}

.case-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.case-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.case-play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10,10,10,0.5);
  opacity: 0;
  transition: var(--transition);
}

.case-card:hover .case-play-overlay {
  opacity: 1;
}

.case-play-circle {
  width: 56px;
  height: 56px;
  border: 2px solid var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201,169,110,0.2);
}

.case-play-circle svg {
  width: 20px;
  height: 20px;
  fill: var(--color-gold);
  margin-left: 3px;
}

.case-info {
  padding: 24px;
}

.case-tag {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--color-gold);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.case-tag::before {
  content: '';
  width: 16px;
  height: 1px;
  background: var(--color-gold);
}

.case-title {
  font-size: 16px;
  color: var(--color-off-white);
  margin-bottom: 10px;
  font-family: var(--font-serif);
  line-height: 1.4;
}

.case-desc {
  font-size: 13px;
  color: var(--color-light-gray);
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-stats {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--color-silver);
  border-top: 1px solid rgba(201,169,110,0.1);
  padding-top: 14px;
}

.case-stats span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--color-black);
}

.faq-list {
  max-width: 800px;
  margin: 60px auto 0;
}

.faq-item {
  border-bottom: 1px solid rgba(201, 169, 110, 0.12);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  cursor: pointer;
  gap: 20px;
  transition: var(--transition);
}

.faq-question:hover .faq-q-text {
  color: var(--color-gold);
}

.faq-q-text {
  font-size: 16px;
  color: var(--color-off-white);
  line-height: 1.5;
  font-family: var(--font-serif);
  transition: var(--transition);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border: 1px solid rgba(201, 169, 110, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-gold);
  font-size: 18px;
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  background: var(--color-gold);
  color: var(--color-black);
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 24px;
}

.faq-answer p {
  font-size: 14px;
  color: var(--color-silver);
  line-height: 1.9;
  padding-left: 0;
}

/* ===== 预约区域 ===== */
.booking-section {
  background: var(--color-deep-gray);
  position: relative;
  overflow: hidden;
}

.booking-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  border: 1px solid rgba(201, 169, 110, 0.08);
  border-radius: 50%;
}

.booking-section::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -50px;
  width: 300px;
  height: 300px;
  border: 1px solid rgba(201, 169, 110, 0.05);
  border-radius: 50%;
}

.booking-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.booking-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--color-gold);
}

.form-input,
.form-select,
.form-textarea {
  background: var(--color-mid-gray);
  border: 1px solid rgba(201, 169, 110, 0.15);
  padding: 14px 18px;
  color: var(--color-off-white);
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
  transition: var(--transition);
  width: 100%;
}

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

.form-select {
  appearance: none;
  cursor: pointer;
}

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

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

/* ===== 联系区域 ===== */
.contact-section {
  background: var(--color-black);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 60px;
}

.contact-item {
  text-align: center;
  padding: 36px 20px;
  border: 1px solid rgba(201, 169, 110, 0.1);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: rgba(201, 169, 110, 0.3);
  background: var(--color-deep-gray);
}

.contact-icon {
  font-size: 28px;
  color: var(--color-gold);
  margin-bottom: 16px;
  display: block;
}

.contact-label {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--color-light-gray);
  margin-bottom: 8px;
}

.contact-value {
  font-size: 14px;
  color: var(--color-off-white);
  line-height: 1.6;
  word-break: break-all;
}

/* ===== 地图/地址 ===== */
.address-section {
  background: var(--color-deep-gray);
}

.address-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.address-map {
  aspect-ratio: 4/3;
  background: var(--color-mid-gray);
  border: 1px solid rgba(201, 169, 110, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.map-placeholder {
  text-align: center;
  color: var(--color-light-gray);
}

.map-pin {
  font-size: 40px;
  color: var(--color-gold);
  margin-bottom: 12px;
  display: block;
}

.address-details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.address-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.address-row-icon {
  color: var(--color-gold);
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

.address-row-content h4 {
  font-size: 13px;
  letter-spacing: 1.5px;
  color: var(--color-silver);
  margin-bottom: 4px;
}

.address-row-content p {
  font-size: 15px;
  color: var(--color-off-white);
  line-height: 1.6;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--color-black);
  border-top: 1px solid rgba(201, 169, 110, 0.15);
  padding: 60px 0 30px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(201, 169, 110, 0.1);
}

.footer-brand-logo {
  font-family: var(--font-serif);
  font-size: 36px;
  color: var(--color-gold);
  letter-spacing: 4px;
  margin-bottom: 16px;
}

.footer-brand-desc {
  font-size: 13px;
  color: var(--color-light-gray);
  line-height: 1.9;
  margin-bottom: 24px;
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(201, 169, 110, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-silver);
  font-size: 14px;
  transition: var(--transition);
}

.footer-social a:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  background: rgba(201, 169, 110, 0.1);
}

.footer-col-title {
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--color-gold);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 13px;
  color: var(--color-light-gray);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-gold);
  padding-left: 6px;
}

.footer-bottom {
  padding-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 12px;
  color: var(--color-light-gray);
  letter-spacing: 1px;
}

.footer-update {
  font-size: 12px;
  color: var(--color-light-gray);
}

.footer-icp {
  font-size: 12px;
  color: var(--color-light-gray);
}

/* ===== 模态框 ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--color-deep-gray);
  width: 90%;
  max-width: 800px;
  position: relative;
  border: 1px solid rgba(201,169,110,0.2);
}

.modal-close {
  position: absolute;
  top: -40px;
  right: 0;
  color: var(--color-off-white);
  font-size: 24px;
  cursor: pointer;
  background: none;
  border: none;
  line-height: 1;
  transition: var(--transition);
}

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

.modal-video {
  aspect-ratio: 16/9;
  width: 100%;
  background: var(--color-black);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-video-placeholder {
  text-align: center;
  color: var(--color-silver);
}

.modal-video-placeholder .play-big {
  font-size: 60px;
  color: var(--color-gold);
  margin-bottom: 16px;
  display: block;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .videos-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item:nth-child(2) {
    border-right: none;
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps::before {
    display: none;
  }
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10,10,10,0.98);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid rgba(201,169,110,0.15);
    z-index: 999;
  }
  .nav-toggle { display: flex; }
  .hero-title { font-size: 36px; }
  .hero-actions { flex-direction: column; }
  .services-grid { grid-template-columns: 1fr; }
  .space-inner { grid-template-columns: 1fr; }
  .space-content { padding: 40px 24px; }
  .booking-inner { grid-template-columns: 1fr; gap: 40px; }
  .address-inner { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .videos-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .form-row { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 28px; }
  .section-title { font-size: 24px; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

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

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ===== 辅助类 ===== */
.text-center { text-align: center; }
.text-gold { color: var(--color-gold); }
.text-silver { color: var(--color-silver); }
.mt-auto { margin-top: auto; }
.w-full { width: 100%; }