/* ============================================
   Officezy租易 - 上海办公室租赁
   自定义样式表 - 明亮科技风主题
   ============================================ */

/* ---- CSS 自定义属性 ---- */
:root {
  /* 主色调 - 明亮背景 */
  --bg-primary: #ffffff;
  --bg-secondary: #f0f4f8;
  --bg-tertiary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-card-hover: rgba(255, 255, 255, 1);
  --bg-glass: rgba(255, 255, 255, 0.75);
  --bg-glass-strong: rgba(255, 255, 255, 0.9);

  /* 强调色 - 专业蓝色系 */
  --accent: #2563eb;
  --accent-dim: #1d4ed8;
  --accent-light: #3b82f6;
  --accent-glow: rgba(37, 99, 235, 0.2);
  --accent-gradient: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #1d4ed8 100%);
  --accent-gradient-warm: linear-gradient(135deg, #2563eb 0%, #6366f1 100%);

  /* 辅助色 */
  --teal: #0ea5e9;
  --purple: #6366f1;
  --purple-glow: rgba(99, 102, 241, 0.15);
  --gold: #f59e0b;
  --green: #10b981;
  --red: #ef4444;

  /* CTA 按钮色 */
  --cta: #f97316;
  --cta-hover: #ea580c;
  --cta-gradient: linear-gradient(135deg, #f97316 0%, #fb923c 100%);

  /* 文字色 */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;
  --text-link: #2563eb;

  /* 边框与阴影 */
  --border-glass: rgba(0, 0, 0, 0.08);
  --border-accent: rgba(37, 99, 235, 0.2);
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 30px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 30px var(--accent-glow);
  --shadow-glow-purple: 0 0 30px var(--purple-glow);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  /* 过渡 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* 字体 */
  --font-display: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Fira Code", monospace;
}

/* ---- 基础重置 ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* ---- 自定义滚动条 ---- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-dim), var(--accent));
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-light);
}

/* ---- 文字选择 ---- */
::selection {
  background: var(--accent);
  color: var(--text-inverse);
}

/* ---- 通用动画 ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50%      { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(37, 99, 235, 0.1); }
}

@keyframes floatUpDown {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-12px); }
}

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes borderGlow {
  0%, 100% { border-color: var(--border-glass); }
  50%      { border-color: var(--border-accent); }
}

@keyframes qrBounceIn {
  0%   { opacity: 0; transform: translateY(20px) scale(0.9); }
  60%  { opacity: 1; transform: translateY(-4px) scale(1.02); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes qrPulse {
  0%, 100% { box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2); }
  50%      { box-shadow: 0 4px 24px rgba(37, 99, 235, 0.4); }
}

/* 初始隐藏动画元素 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟动画 */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }
.delay-600 { transition-delay: 0.6s; }

/* ---- 导航栏 ---- */
.navbar {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glass);
  padding: 0.75rem 0;
  transition: all var(--transition-smooth);
  z-index: 1050;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-bottom-color: var(--border-accent);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.navbar-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--text-primary) !important;
  letter-spacing: 1px;
}

.navbar-brand i {
  color: var(--accent);
  margin-right: 8px;
}

.navbar .nav-link {
  color: var(--text-secondary) !important;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: all var(--transition-fast);
  position: relative;
}

.navbar .nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  border-radius: 1px;
  transition: width var(--transition-smooth);
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: var(--accent) !important;
}

.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
  width: 60%;
}

.navbar .nav-phone {
  color: var(--accent) !important;
  font-weight: 600;
  font-size: 0.95rem;
}

.navbar .nav-phone i {
  margin-right: 4px;
}

.navbar-toggler {
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 0.4rem 0.6rem;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 2px var(--accent-glow);
  outline: none;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15, 23, 42, 0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ---- Hero 区域 ---- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url("../images/bg-1.jpg") center/cover no-repeat;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 2rem;
  max-width: 860px;
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1.6rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50px;
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease-out;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.hero-title {
  font-family: var(--font-display);
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1.25rem;
  color: #ffffff;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.35rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.btn-primary-glow {
  background: var(--cta-gradient);
  color: #fff;
  border: none;
  padding: 0.8rem 2rem;
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary-glow::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, transparent 50%);
  transition: opacity var(--transition-fast);
}

.btn-primary-glow:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.4);
  color: #fff;
}

.btn-outline-glass {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  padding: 0.8rem 2rem;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-smooth);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  backdrop-filter: blur(10px);
}

.btn-outline-glass:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(37, 99, 235, 0.06);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  animation: floatUpDown 2s ease-in-out infinite;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
  text-align: center;
  cursor: pointer;
}

.hero-scroll-hint i {
  display: block;
  font-size: 1.2rem;
  margin-top: 4px;
}

/* ---- 通用区块样式 ---- */
.section-padding {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-block;
  padding: 0.3rem 1.2rem;
  background: rgba(37, 99, 235, 0.06);
  border: 1px solid var(--border-accent);
  border-radius: 50px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-title .highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0 auto;
}

/* ---- 区块分隔线 ---- */
.section-divider {
  width: 60px;
  height: 4px;
  background: var(--accent-gradient);
  border-radius: 2px;
  margin: 0 auto 1.5rem;
}

/* ---- 服务优势卡片 ---- */
.service-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: all var(--transition-smooth);
  height: 100%;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card .card-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  transition: all var(--transition-smooth);
}

.service-card:hover .card-icon {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
  background: rgba(37, 99, 235, 0.1);
}

.service-card .card-icon i {
  font-size: 1.8rem;
  color: var(--accent);
  transition: transform var(--transition-bounce);
}

.service-card:hover .card-icon i {
  transform: scale(1.15);
}

.service-card .card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.service-card .card-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* 统计数据行 */
.stats-row {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  gap: 1.5rem;
  box-shadow: var(--shadow-card);
}

.stat-item {
  text-align: center;
  flex: 1;
  min-width: 140px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.stat-suffix {
  font-size: 1.4rem;
  font-weight: 600;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* ---- 办公空间展示 ---- */
.gallery-filter {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 0.6rem 1.5rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-gradient);
  color: var(--text-inverse);
  border-color: transparent;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.gallery-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-smooth);
  cursor: pointer;
  margin-bottom: 1.5rem;
  height: 100%;
  box-shadow: var(--shadow-card);
}

.gallery-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--border-accent);
}

.gallery-card .card-img-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.gallery-card .card-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.gallery-card .card-img-overlay-zone {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(15, 23, 42, 0.85) 100%);
  opacity: 0;
  transition: opacity var(--transition-smooth);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 1.5rem;
}

.gallery-card:hover .card-img-overlay-zone {
  opacity: 1;
}

.gallery-card .card-info {
  padding: 1.25rem;
}

.gallery-card .card-info .location-tag {
  display: inline-block;
  padding: 0.2rem 0.8rem;
  background: var(--accent-gradient);
  color: var(--text-inverse);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.gallery-card .card-info h5 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.gallery-card .card-info p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* ---- 关于我们 ---- */
.about-section {
  position: relative;
  background: var(--bg-secondary);
}

.about-image-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-card);
}

.about-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.about-image-badge {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(15px);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-card);
}

.about-image-badge .badge-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.about-image-badge .badge-text {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.about-content h3 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.about-content h3 .highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

/* ---- 联系我们 ---- */
.contact-section {
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
}

.contact-section::before {
  content: "";
  position: absolute;
  top: -200px;
  right: -200px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.contact-info-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  height: 100%;
  box-shadow: var(--shadow-card);
}

.contact-info-card h4 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-info-item i {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.06);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: 1.1rem;
  flex-shrink: 0;
}

.contact-info-item .info-text .info-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}

.contact-info-item .info-text .info-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-info-item .info-text a {
  color: var(--accent);
  text-decoration: none;
}

.contact-info-item .info-text a:hover {
  text-decoration: underline;
}

/* 联系表单 */
.contact-form-card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  height: 100%;
  box-shadow: var(--shadow-card);
}

.contact-form-card h4 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.contact-form-card .form-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.form-glass .form-control,
.form-glass .form-select {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  transition: all var(--transition-smooth);
}

.form-glass .form-control:focus,
.form-glass .form-select:focus {
  background: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  color: var(--text-primary);
  outline: none;
}

.form-glass .form-control::placeholder {
  color: var(--text-muted);
}

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

.form-glass .form-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}

.form-glass .btn-submit {
  width: 100%;
  padding: 0.85rem;
  background: var(--cta-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.form-glass .btn-submit:hover {
  box-shadow: 0 4px 20px rgba(249, 115, 22, 0.4);
  transform: translateY(-2px);
}

.form-glass .btn-submit:active {
  transform: translateY(0);
}

.form-glass .btn-submit .spinner-border {
  width: 1.2rem;
  height: 1.2rem;
  margin-right: 0.5rem;
  display: none;
}

.form-glass .btn-submit.loading .spinner-border {
  display: inline-block;
}

.form-glass .btn-submit.loading .btn-text {
  display: inline;
}

.form-feedback {
  display: none;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 1rem;
}

.form-feedback.success {
  display: block;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #059669;
}

.form-feedback.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #dc2626;
}

/* ---- 悬浮微信群二维码 ---- */
.floating-qr {
  position: fixed;
  bottom: 5.5rem;
  right: 2rem;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

.floating-qr-btn {
  width: 50px;
  height: 50px;
  background: var(--cta-gradient);
  border: none;
  border-radius: 50%;
  color: #fff;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(249, 115, 22, 0.35);
  transition: all var(--transition-smooth);
  position: relative;
}

.floating-qr-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(249, 115, 22, 0.5);
}

.floating-qr-btn::after {
  content: "租";
  position: absolute;
  top: -6px;
  right: -6px;
  width: 22px;
  height: 22px;
  background: var(--accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
}

.floating-qr-popup {
  display: none;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
  animation: qrBounceIn 0.35s ease-out;
  width: 200px;
}

.floating-qr-popup.show {
  display: block;
}

.floating-qr-popup img {
  width: 150px;
  height: 150px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  object-fit: cover;
  margin-bottom: 0.6rem;
  animation: qrPulse 3s ease-in-out infinite;
}

.floating-qr-popup .qr-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.floating-qr-popup .qr-text i {
  color: #07c160;
  margin-right: 3px;
}

.floating-qr-popup .qr-close {
  position: absolute;
  top: 6px;
  right: 8px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
}

.floating-qr-popup .qr-close:hover {
  color: var(--text-primary);
}

/* ---- 页脚 ---- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-glass);
  padding: 3rem 0 1.5rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.footer-brand i {
  color: var(--accent);
  margin-right: 6px;
}

.footer-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-contact-item i {
  color: var(--accent);
  width: 20px;
  text-align: center;
}

.footer-divider {
  border-color: var(--border-glass);
  margin: 2rem 0 1.5rem;
  opacity: 0.4;
}

.footer-bottom {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-bottom a {
  color: var(--text-secondary);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* ---- 返回顶部按钮 ---- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: 50%;
  color: var(--accent);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-smooth);
  box-shadow: var(--shadow-card);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 18px rgba(37, 99, 235, 0.2);
  transform: translateY(-4px);
}

/* ---- 响应式 ---- */
@media (max-width: 1200px) {
  .hero-title   { font-size: 3.2rem; }
  .section-title { font-size: 2.2rem; }
}

@media (max-width: 991.98px) {
  .navbar .navbar-collapse {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-top: 0.5rem;
    box-shadow: var(--shadow-card);
  }

  .navbar .nav-link::after { display: none; }

  .hero-title    { font-size: 2.8rem; }
  .hero-subtitle { font-size: 1.2rem; }
  .hero-badge    { font-size: 0.85rem; }
  .section-padding { padding: 4rem 0; }
  .section-title   { font-size: 1.9rem; }
  .stats-row       { gap: 2rem; }

  .about-content   { margin-top: 2rem; }
  .contact-info-card { margin-top: 2rem; }
}

@media (max-width: 767.98px) {
  .hero-title    { font-size: 2.3rem; }
  .hero-subtitle { font-size: 1.1rem; }
  .hero-badge    { font-size: 0.8rem; }

  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; justify-content: center; }

  .section-padding { padding: 3rem 0; }
  .section-title   { font-size: 1.6rem; }
  .section-header  { margin-bottom: 2.5rem; }

  .service-card     { padding: 1.75rem 1.25rem; }
  .stat-number      { font-size: 2.2rem; }
  .contact-form-card  { padding: 1.5rem; }

  .about-content h3 { font-size: 1.5rem; }

  .back-to-top { bottom: 1.25rem; right: 1.25rem; width: 40px; height: 40px; }

  .floating-qr { bottom: 4.75rem; right: 1.25rem; }
  .floating-qr-btn { width: 42px; height: 42px; font-size: 1.1rem; }
}

@media (max-width: 480px) {
  .hero-title    { font-size: 1.9rem; }
  .section-title { font-size: 1.4rem; }
  .hero-badge    { font-size: 0.75rem; padding: 0.3rem 1rem; }
}

/* ---- 打印样式 ---- */
@media print {
  .navbar,
  .hero-scroll-hint,
  .back-to-top,
  .gallery-filter,
  .floating-qr { display: none !important; }

  body { background: #fff; color: #000; }
  .section-padding { padding: 2rem 0; }
}