/* ============ :root 设计变量 ============ */
:root {
  --primary: #2B221C;
  --secondary: #21382D;
  --gold: #C59A4A;
  --gold-light: #E4C277;
  --bg: #F6F1E8;
  --card-bg: #FFFFFF;
  --card-warm: #FCFAF5;
  --text: #2A2622;
  --text-secondary: #6B6258;
  --text-muted: #989083;
  --border: #E4DCCE;
  --border-light: #EEE5D8;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow: 0 4px 16px rgba(43, 34, 28, 0.06);
  --shadow-hover: 0 12px 32px rgba(43, 34, 28, 0.12);
  --gradient: linear-gradient(135deg, #C59A4A 0%, #E4C277 100%);
  --gradient-reverse: linear-gradient(135deg, #E4C277 0%, #C59A4A 100%);
  --transition: 0.25s ease;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* ============ reset / base ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input {
  font-family: inherit;
}
ul,
ol {
  list-style: none;
}
h1, h2, h3, h4, h5 {
  line-height: 1.25;
  font-weight: 700;
}

/* ============ 容器 / 栅格 ============ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}
.section {
  padding: 96px 0;
}
.section-head {
  margin-bottom: 48px;
}
.section-head .section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.25;
}
.section-head .section-desc {
  margin-top: 12px;
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.7;
}
.section-title-bar {
  width: 16px;
  height: 4px;
  background: var(--gradient);
  border-radius: 2px;
  margin-top: 12px;
}
.gold-divider {
  width: 48px;
  height: 2px;
  background: var(--gold);
  margin: 16px 0;
}

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 64px;
  display: flex;
  box-shadow: 0 4px 12px rgba(43, 34, 28, 0.05);
}
.header-left {
  flex: 0 0 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  padding-left: 40px;
  gap: 32px;
}
.header-right {
  flex: 0 0 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 40px;
  gap: 16px;
}
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  flex-shrink: 0;
}
.logo-small {
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.08em;
  font-weight: 600;
}
.logo-large {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.02em;
}
.main-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}
.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}
.main-nav a:hover {
  color: var(--text);
}
.main-nav a.active {
  color: var(--text);
  font-weight: 600;
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient);
  border-radius: 1px;
}
.search-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.search-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}
.search-toggle svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  color: #2B221C;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  box-shadow: 0 2px 8px rgba(197, 154, 74, 0.35);
}
.header-cta:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(197, 154, 74, 0.45);
}
.header-cta:active {
  transform: translateY(0);
}
.search-bar {
  position: absolute;
  top: 64px;
  left: 0;
  width: 100%;
  background: #fff;
  padding: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  box-shadow: 0 8px 20px rgba(43, 34, 28, 0.08);
  z-index: 999;
}
.search-bar.open {
  max-height: 160px;
}
.search-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 40px;
  display: flex;
  gap: 12px;
  align-items: center;
}
.search-bar input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  font-size: 15px;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-bar input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(197, 154, 74, 0.25);
}
.search-bar .search-btn {
  background: var(--gradient);
  color: #2B221C;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  transition: all var(--transition);
}
.search-bar .search-btn:hover {
  filter: brightness(1.06);
}
.search-hot {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px 16px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
}
.search-hot .tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--bg);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.search-hot .tag:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: #fff;
}
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 12px;
  cursor: pointer;
}
.burger span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ============ Hero 分屏 ============ */
.hero {
  display: flex;
  min-height: calc(100vh - 64px);
  padding-top: 64px;
}
.hero-left {
  flex: 0 0 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px 60px 60px 40px;
  background: var(--bg);
}
.hero-left .hero-kicker {
  font-size: 14px;
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.hero-left h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--text);
}
.hero-left .hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: 20px;
  max-width: 480px;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-align: center;
}
.btn-primary {
  background: var(--gradient);
  color: #2B221C;
  box-shadow: 0 4px 12px rgba(197, 154, 74, 0.3);
}
.btn-primary:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(197, 154, 74, 0.4);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 3px 8px rgba(197, 154, 74, 0.3);
}
.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--primary);
}
.btn-secondary:hover {
  background: rgba(197, 154, 74, 0.1);
  border-color: var(--gold);
  color: var(--text);
}
.btn-secondary:active {
  background: rgba(197, 154, 74, 0.2);
}
.btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}
.hero-badges {
  display: flex;
  gap: 12px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.data-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 20px;
  background: #FCFAF5;
  border: 1px solid var(--border);
  border-radius: 999px;
}
.data-badge .num {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}
.data-badge .label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}
.hero-right {
  flex: 0 0 50%;
  position: relative;
  min-height: 480px;
  overflow: hidden;
}
.hero-right img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(43, 34, 28, 0.55) 0%, rgba(33, 56, 45, 0.6) 100%);
  z-index: 1;
}
.info-panel {
  position: absolute;
  bottom: 32px;
  left: 32px;
  right: 32px;
  z-index: 2;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(43, 34, 28, 0.9);
  border: 1px solid rgba(228, 216, 206, 0.3);
  max-width: 360px;
}
.info-panel-header {
  background: var(--secondary);
  color: var(--gold-light);
  font-size: 15px;
  font-weight: 700;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.info-panel-header::before {
  content: '口';
  font-size: 14px;
  color: var(--gold);
  font-weight: 800;
}
.info-panel-body {
  padding: 4px 0;
}
.info-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
}
.info-row .k {
  color: rgba(255, 255, 255, 0.6);
}
.info-row .v {
  color: #fff;
  font-weight: 500;
}

/* ============ 功能分组 ============ */
.features-section {
  background: var(--bg);
}
.features-wrap {
  display: flex;
  gap: 40px;
}
.features-index {
  flex: 0 0 240px;
  position: sticky;
  top: 100px;
  align-self: flex-start;
  background: #FCFAF5;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.features-index-title {
  background: var(--primary);
  color: var(--gold-light);
  font-size: 15px;
  font-weight: 700;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.features-index-title::before {
  content: '口';
  font-size: 14px;
  color: var(--gold);
  font-weight: 800;
}
.features-index-list a {
  display: block;
  padding: 14px 16px;
  font-size: 15px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition);
  border-left: 3px solid transparent;
}
.features-index-list a:last-child {
  border-bottom: none;
}
.features-index-list a:hover {
  background: rgba(197, 154, 74, 0.08);
  color: var(--text);
  border-left-color: var(--gold);
}
.features-index-list a.active {
  background: rgba(197, 154, 74, 0.12);
  color: var(--text);
  border-left-color: var(--gold);
  font-weight: 600;
}
.features-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.feature-card {
  background: var(--card-warm);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--gold);
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #2B221C;
  font-weight: 800;
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  flex: 1;
}
.feature-tags {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(197, 154, 74, 0.1);
  border: 1px solid rgba(197, 154, 74, 0.3);
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-secondary);
}
.feature-link {
  margin-top: 12px;
  font-size: 14px;
  color: var(--gold);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition);
}
.feature-link:hover {
  gap: 8px;
}
.feature-link .arrow {
  transition: transform var(--transition);
}

/* ============ 使用场景 ============ */
.scenarios-section {
  background: #FCFAF5;
}
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.scenario-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.scenario-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--gold);
}
.scenario-img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.scenario-card:hover .scenario-img {
  transform: scale(1.03);
}
.scenario-body {
  padding: 24px;
}
.scenario-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}
.scenario-tags {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.scenario-tags .tag {
  background: var(--bg);
}
.scenario-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============ 成功案例 ============ */
.testimonials-section {
  background: var(--bg);
}
.stats-row {
  display: flex;
  gap: 20px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  justify-content: center;
}
.stat-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 32px;
  text-align: center;
  min-width: 160px;
  transition: all var(--transition);
}
.stat-item:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow-hover);
}
.stat-item .num {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.stat-item .label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}
.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.testimonial-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  transition: all var(--transition);
}
.testimonial-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--gold);
}
.testimonial-card .quote-icon {
  font-size: 32px;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 12px;
  font-family: Georgia, serif;
}
.testimonial-card .text {
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 16px;
}
.testimonial-card .person {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
}
.testimonial-card .scene-tag {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 12px;
  background: rgba(197, 154, 74, 0.1);
  border: 1px solid rgba(197, 154, 74, 0.3);
  padding: 4px 12px;
  border-radius: 999px;
  color: var(--text-secondary);
}

/* ============ 价格表 ============ */
.pricing-section {
  background: #FCFAF5;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.price-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.price-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.price-card.featured {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 12px 32px rgba(43, 34, 28, 0.25);
}
.price-card.featured .recommend-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  color: #2B221C;
  font-size: 13px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 999px;
  white-space: nowrap;
  letter-spacing: 0.03em;
}
.price-card .plan-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.price-card.featured .plan-name {
  color: #fff;
}
.price-card .price-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 20px;
}
.price-card .price-row .currency {
  font-size: 18px;
  color: var(--text-secondary);
  font-weight: 600;
}
.price-card.featured .price-row .currency {
  color: var(--gold-light);
}
.price-card .price-row .amount {
  font-size: 42px;
  font-weight: 800;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.price-card.featured .price-row .amount {
  color: var(--gold-light);
}
.price-card .price-row .unit {
  font-size: 14px;
  color: var(--text-secondary);
}
.price-card.featured .price-row .unit {
  color: rgba(255, 255, 255, 0.6);
}
.price-details {
  flex: 1;
  margin-bottom: 20px;
}
.price-details .detail-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-light);
  font-size: 14px;
}
.price-details .detail-row:last-child {
  border-bottom: none;
}
.price-details .detail-row .dk {
  color: var(--text-muted);
}
.price-details .detail-row .dv {
  color: var(--text);
  font-weight: 500;
}
.price-card.featured .price-details .detail-row {
  border-bottom-color: rgba(255, 255, 255, 0.1);
}
.price-card.featured .price-details .detail-row .dk {
  color: rgba(255, 255, 255, 0.55);
}
.price-card.featured .price-details .detail-row .dv {
  color: #fff;
}
.price-btn {
  display: block;
  text-align: center;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  border: 1px solid var(--gold);
  color: var(--text);
}
.price-btn:hover {
  background: rgba(197, 154, 74, 0.12);
  border-color: var(--gold);
}
.price-card.featured .price-btn {
  background: var(--gradient);
  color: #2B221C;
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(197, 154, 74, 0.3);
}
.price-card.featured .price-btn:hover {
  filter: brightness(1.06);
}

/* ============ FAQ ============ */
.faq-section {
  background: var(--bg);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
}
.faq-item {
  border-top: 1px solid var(--border);
  padding: 4px 0;
}
.faq-item:last-child {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  min-height: 48px;
  user-select: none;
}
.faq-question .num {
  font-size: 24px;
  font-weight: 800;
  color: var(--gold);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.faq-question .text {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}
.faq-question .icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  position: relative;
  transition: transform 0.3s ease;
}
.faq-question .icon::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
}
.faq-question .icon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 2px;
  height: 14px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: opacity 0.3s ease;
}
.faq-item.open .faq-question .icon {
  transform: rotate(45deg);
}
.faq-item.open .faq-question .icon::after {
  opacity: 0;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-answer-inner {
  padding: 0 0 18px 40px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============ CTA ============ */
.cta-section {
  background: var(--primary);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(197, 154, 74, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  transform: translateY(-50%);
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient);
}
.cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 80px 40px;
}
.cta-inner h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 12px;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 32px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  color: #2B221C;
  font-size: 16px;
  font-weight: 700;
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(197, 154, 74, 0.35);
}
.cta-btn:hover {
  filter: brightness(1.08);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(197, 154, 74, 0.45);
}
.cta-btn:active {
  transform: translateY(0);
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--primary);
  color: #C9BDAE;
  padding: 64px 0 0;
}
.footer-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}
.footer-brand .footer-logo span {
  color: var(--gold-light);
  font-size: 14px;
  font-weight: 600;
  display: block;
  letter-spacing: 0.05em;
}
.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.7;
  margin-top: 12px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--gradient);
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition);
}
.footer-col ul a:hover {
  color: var(--gold-light);
}
.footer-col p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 6px;
}
.footer-qr {
  width: 80px;
  height: 80px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  margin-top: 12px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 40px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a:hover {
  color: var(--gold-light);
}

/* ============ 返回顶部 ============ */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--gold);
  cursor: pointer;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 999;
}
.back-top.show {
  opacity: 1;
  visibility: visible;
}
.back-top:hover {
  background: var(--gold);
  color: #fff;
}

/* ============ 工具类 ============ */
.text-center {
  text-align: center;
}
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* ============ 焦点可见性 ============ */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ============ 图片 ============ */
img {
  object-fit: cover;
}

/* ============ 响应式：≥1200px 默认 ============ */
/* 桌面默认样式已覆盖 */

/* ============ 响应式：992—1199px ============ */
@media (max-width: 1199px) {
  .features-index {
    flex-basis: 220px;
  }
  .scenarios-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .pricing-grid {
    gap: 16px;
  }
  .price-card {
    padding: 24px;
  }
  .hero-left h1 {
    font-size: 42px;
  }
}

/* ============ 响应式：768—991px ============ */
@media (max-width: 991px) {
  .container {
    padding: 0 24px;
  }
  .section {
    padding: 64px 0;
  }
  .hero {
    flex-direction: column;
    padding-top: 64px;
  }
  .hero-left {
    flex-basis: auto;
    padding: 48px 24px 24px;
    text-align: center;
    align-items: center;
  }
  .hero-left h1 {
    font-size: 36px;
  }
  .hero-left .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-ctas {
    justify-content: center;
  }
  .hero-badges {
    justify-content: center;
  }
  .hero-right {
    flex-basis: auto;
    min-height: 400px;
    height: 480px;
  }
  .features-wrap {
    flex-direction: column;
  }
  .features-index {
    position: static;
    flex-basis: auto;
    display: flex;
    flex-wrap: wrap;
    border-radius: var(--radius-md);
    overflow: hidden;
  }
  .features-index-title {
    width: 100%;
  }
  .features-index-list {
    display: flex;
    flex-wrap: wrap;
  }
  .features-index-list a {
    flex: 1;
    white-space: nowrap;
    text-align: center;
    padding: 12px 16px;
    border-bottom: none;
    border-left: none;
    border-top: 1px solid var(--border-light);
  }
  .scenarios-grid {
    grid-template-columns: 1fr 1fr;
  }
  .testimonial-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr 1fr;
  }
  .price-card.featured {
    order: -1;
    grid-column: 1 / -1;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .header-left {
    padding-left: 24px;
  }
  .header-right {
    padding-right: 24px;
  }
}

/* ============ 响应式：<768px ============ */
@media (max-width: 767px) {
  .container {
    padding: 0 20px;
  }
  .section {
    padding: 56px 0;
  }
  .site-header {
    height: 56px;
  }
  .header-left {
    flex: 1;
    background: var(--primary);
    padding-left: 16px;
    gap: 8px;
  }
  .header-left .logo-small {
    color: var(--gold-light);
  }
  .header-left .logo-large {
    color: #fff;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    width: 100%;
    background: var(--primary);
    flex-direction: column;
    padding: 16px;
    gap: 0;
    box-shadow: 0 8px 24px rgba(43, 34, 28, 0.4);
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 16px;
    padding: 14px 0;
    width: 100%;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }
  .main-nav a:last-child {
    border-bottom: none;
  }
  .main-nav a.active {
    color: var(--gold-light);
  }
  .main-nav a.active::after {
    display: none;
  }
  .header-right {
    flex: 0 0 auto;
    background: var(--primary);
    padding-right: 12px;
  }
  .search-toggle {
    display: none;
  }
  .header-cta {
    padding: 8px 16px;
    font-size: 14px;
  }
  .burger {
    display: flex;
  }
  .search-bar-inner {
    flex-direction: column;
    padding: 12px 16px;
  }
  .search-bar.open {
    max-height: 200px;
  }
  .hero {
    padding-top: 56px;
  }
  .hero-left {
    padding: 32px 16px 24px;
  }
  .hero-left h1 {
    font-size: 32px;
  }
  .hero-left .hero-subtitle {
    font-size: 15px;
    margin-top: 12px;
  }
  .hero-ctas {
    flex-direction: column;
    width: 100%;
    align-items: stretch;
  }
  .hero-ctas .btn {
    width: 100%;
  }
  .hero-badges {
    flex-direction: column;
    align-items: center;
  }
  .data-badge {
    width: 100%;
    max-width: 240px;
  }
  .hero-right {
    min-height: 320px;
    height: 400px;
  }
  .hero-right img {
    position: absolute;
  }
  .info-panel {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .features-index-list {
    flex-direction: column;
  }
  .features-index-list a {
    flex: none;
    text-align: left;
    border-left: 3px solid transparent;
    border-top: none;
    border-bottom: 1px solid var(--border-light);
  }
  .scenarios-grid {
    grid-template-columns: 1fr;
  }
  .stats-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-item {
    padding: 16px;
    min-width: auto;
  }
  .stat-item .num {
    font-size: 28px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .price-card.featured {
    order: 0;
    grid-column: auto;
  }
  .faq-question {
    gap: 12px;
    padding: 16px 0;
  }
  .faq-question .num {
    font-size: 18px;
  }
  .faq-question .text {
    font-size: 15px;
  }
  .cta-inner {
    padding: 56px 20px;
  }
  .cta-inner h2 {
    font-size: 28px;
  }
  .cta-inner p {
    font-size: 15px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 0 20px 32px;
  }
  .footer-bottom .container {
    flex-direction: column;
    align-items: center;
  }
  .back-top {
    bottom: 16px;
    right: 16px;
  }
}

/* ============ 响应式：≤520px ============ */
@media (max-width: 520px) {
  .hero-left h1 {
    font-size: 28px;
  }
  .section-head .section-title {
    font-size: 26px;
  }
  .feature-card {
    padding: 20px;
  }
  .scenario-body {
    padding: 20px;
  }
  .testimonial-card {
    padding: 20px;
  }
  .price-card {
    padding: 20px;
  }
}

/* ============ 图片圆角优化 ============ */
.info-panel {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* 场景图图片容器 */
.scenario-img-wrap {
  overflow: hidden;
  border-radius: 16px 16px 0 0;
  position: relative;
}
.scenario-img-wrap::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 30%;
  background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.2));
  pointer-events: none;
}