/* ============================================
   词速推 - 搜索下拉词推广官网样式
   ============================================ */

/* --- CSS变量 --- */
:root {
  --primary: #165DFF;
  --primary-dark: #0E42D2;
  --primary-light: #4080FF;
  --primary-50: #E8F3FF;
  --primary-100: #D4E8FF;
  --accent: #FF7D00;
  --accent-light: #FF9A2E;
  --accent-50: #FFF3E8;
  --success: #00B42A;
  --success-light: #23C343;
  --success-50: #E8FFEA;
  --warning: #FF7D00;
  --danger: #F53F3F;
  --text-primary: #1D2129;
  --text-secondary: #4E5969;
  --text-tertiary: #86909C;
  --text-placeholder: #C9CDD4;
  --border-light: #E5E6EB;
  --border-medium: #DCDCDE;
  --bg-page: #F7F8FA;
  --bg-white: #FFFFFF;
  --bg-secondary: #F2F3F5;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-primary: 0 4px 16px rgba(22, 93, 255, 0.25);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-main: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --max-width: 1200px;
  --nav-height: 68px;
}

/* --- Reset --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-white);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul, ol {
  list-style: none;
}

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

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

/* --- 通用组件 --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.text-primary {
  color: var(--primary);
}

.text-accent {
  color: var(--accent);
}

.text-success {
  color: var(--success);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.25s ease;
  cursor: pointer;
  white-space: nowrap;
  line-height: 1;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(22, 93, 255, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(22, 93, 255, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary-50);
  transform: translateY(-2px);
}

/* Section */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-50);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 38px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Reveal 动画 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  flex-shrink: 0;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-mark svg {
  width: 32px;
  height: 32px;
}

.logo-text {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transition: width 0.3s ease;
}

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-admin-link {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all 0.3s ease;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Hero 首屏
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--nav-height) + 60px) 0 80px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(180deg, #F0F6FF 0%, #FFFFFF 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(22, 93, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 93, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}

.hero-glow-1 {
  width: 400px;
  height: 400px;
  background: var(--primary);
  top: -100px;
  right: -100px;
  opacity: 0.15;
}

.hero-glow-2 {
  width: 300px;
  height: 300px;
  background: var(--accent);
  bottom: 50px;
  left: -50px;
  opacity: 0.1;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-content {
  animation: fadeInLeft 0.8s ease-out;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--primary-100);
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

.hero-title {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-title .text-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

.stat-num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  display: flex;
  align-items: baseline;
}

.stat-suffix {
  font-size: 24px;
  color: var(--accent);
  font-weight: 700;
}

.stat-label {
  font-size: 14px;
  color: var(--text-tertiary);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-light);
}

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

/* Hero 搜索框动画 */
.hero-visual {
  display: flex;
  justify-content: center;
  animation: fadeInRight 0.8s ease-out;
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

.search-mockup {
  width: 100%;
  max-width: 460px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(22, 93, 255, 0.15);
  overflow: hidden;
  border: 1px solid var(--border-light);
}

.search-platform-tabs {
  display: flex;
  gap: 4px;
  padding: 12px 16px 0;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-page);
  overflow-x: auto;
}

.search-platform-tabs .tab {
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-tertiary);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  white-space: nowrap;
  transition: all 0.2s ease;
  position: relative;
}

.search-platform-tabs .tab.active {
  color: var(--primary);
  background: #fff;
}

.search-platform-tabs .tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: #fff;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-light);
}

.search-icon {
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
}

.cursor {
  color: var(--primary);
  animation: blink 1s step-end infinite;
  font-weight: 300;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.dropdown-list {
  padding: 8px 0;
  min-height: 240px;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  opacity: 0;
  transform: translateY(-10px);
  animation: dropIn 0.4s ease forwards;
  cursor: pointer;
  transition: background 0.2s ease;
}

.dropdown-item:hover {
  background: var(--primary-50);
}

@keyframes dropIn {
  to { opacity: 1; transform: translateY(0); }
}

.dropdown-item-icon {
  width: 18px;
  display: flex;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-placeholder);
}

.dropdown-item-text {
  flex: 1;
  font-size: 15px;
  color: var(--text-primary);
}

.dropdown-item-text strong {
  color: var(--accent);
  font-weight: 700;
}

.dropdown-item-badge {
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-50);
  padding: 3px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}

.search-footer {
  padding: 12px 20px;
  background: var(--bg-page);
  border-top: 1px solid var(--border-light);
}

.search-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.scroll-hint {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-tertiary);
  font-size: 13px;
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--text-tertiary);
  border-bottom: 2px solid var(--text-tertiary);
  transform: rotate(45deg);
}

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

/* ============================================
   服务平台
   ============================================ */
.platforms {
  background: var(--bg-white);
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.platform-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
  cursor: default;
}

.platform-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-100);
}

.platform-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-icon svg {
  width: 100%;
  height: 100%;
}

.platform-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.platform-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.platform-tags span {
  font-size: 12px;
  color: var(--text-tertiary);
  background: var(--bg-secondary);
  padding: 4px 10px;
  border-radius: 100px;
}

/* ============================================
   服务优势
   ============================================ */
.advantages {
  background: var(--bg-page);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.adv-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.adv-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-100);
}

.adv-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.adv-card:hover .adv-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  transform: scale(1.05);
}

.adv-icon svg {
  width: 28px;
  height: 28px;
}

.adv-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.adv-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   服务流程
   ============================================ */
.process {
  background: var(--bg-white);
  overflow: hidden;
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.process-line {
  position: absolute;
  top: 48px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light), var(--accent-light), var(--accent));
  opacity: 0.3;
  z-index: 0;
}

.process-item {
  text-align: center;
  position: relative;
  z-index: 1;
  background: #fff;
}

.process-step {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-50);
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
}

.process-icon {
  width: 96px;
  height: 96px;
  margin: 0 auto 24px;
  background: #fff;
  border: 2px solid var(--primary-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  transition: all 0.3s ease;
  position: relative;
}

.process-icon svg {
  width: 40px;
  height: 40px;
}

.process-item:hover .process-icon {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: scale(1.05);
  box-shadow: var(--shadow-primary);
}

.process-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.process-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   价格方案
   ============================================ */
.pricing {
  background: var(--bg-page);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  border: 1px solid var(--border-light);
  transition: all 0.3s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.pricing-popular {
  border: 2px solid var(--primary);
  transform: scale(1.05);
  box-shadow: 0 12px 40px rgba(22, 93, 255, 0.2);
}

.pricing-card.pricing-popular:hover {
  transform: scale(1.05) translateY(-6px);
}

.popular-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 20px;
  border-radius: 100px;
  box-shadow: 0 4px 12px rgba(255, 125, 0, 0.35);
  white-space: nowrap;
}

.pricing-header h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.pricing-header p {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 2px;
  margin-bottom: 28px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border-light);
}

.price-currency {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.price-amount {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.pricing-popular .price-amount {
  color: var(--accent);
}

.price-unit {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-left: 4px;
}

.pricing-features {
  flex: 1;
  margin-bottom: 28px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.pricing-features li svg {
  width: 20px;
  height: 20px;
  color: var(--success);
  flex-shrink: 0;
  margin-top: 1px;
}

.pricing-features li.disabled {
  color: var(--text-placeholder);
  text-decoration: line-through;
}

.pricing-features li.disabled svg {
  color: var(--text-placeholder);
}

/* 单卡片价格方案 */
.pricing-single {
  max-width: 720px;
  margin: 0 auto;
}

.pricing-single-card {
  background: #fff;
  border-radius: var(--radius-xl);
  padding: 48px 56px;
  border: 1px solid var(--border-light);
  box-shadow: 0 12px 40px rgba(22, 93, 255, 0.1);
  position: relative;
  overflow: hidden;
}

.pricing-single-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.pricing-single-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.pricing-single-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 12px;
}

.pricing-single-price .price-currency {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
}

.pricing-single-price .price-amount {
  font-family: var(--font-mono);
  font-size: 64px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
}

.pricing-single-price .price-unit {
  font-size: 18px;
  color: var(--text-secondary);
  margin-left: 4px;
  font-weight: 500;
}

.pricing-single-desc {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.pricing-single-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 40px;
}

.feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.feature-item > svg {
  width: 24px;
  height: 24px;
  color: var(--success);
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.feature-item p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.pricing-single-cta {
  text-align: center;
  padding-top: 32px;
  border-top: 1px dashed var(--border-light);
}

.pricing-single-cta .btn {
  padding: 16px 36px;
  font-size: 16px;
  box-shadow: 0 6px 20px rgba(22, 93, 255, 0.35);
}

.pricing-single-cta .btn:hover {
  box-shadow: 0 8px 28px rgba(22, 93, 255, 0.45);
}

.cta-hint {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: 12px;
}

@media (max-width: 640px) {
  .pricing-single-card {
    padding: 32px 24px;
  }
  .pricing-single-price .price-amount {
    font-size: 48px;
  }
  .pricing-single-features {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .feature-item h4 {
    font-size: 15px;
  }
  .feature-item p {
    font-size: 13px;
  }
}

/* ============================================
   客户案例
   ============================================ */
.cases {
  background: var(--bg-white);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.case-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all 0.3s ease;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-100);
}

.case-industry {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  color: var(--primary);
  background: var(--primary-50);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.case-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.case-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.case-metrics {
  display: flex;
  gap: 32px;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

.case-metric {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}

.metric-label {
  font-size: 13px;
  color: var(--text-tertiary);
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: linear-gradient(135deg, var(--primary-50), #fff);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  border: 1px solid var(--primary-100);
}

.testimonial-quote {
  font-family: Georgia, serif;
  font-size: 64px;
  line-height: 1;
  color: var(--primary);
  opacity: 0.15;
  position: absolute;
  top: 16px;
  right: 24px;
}

.testimonial-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.author-info {
  flex: 1;
  min-width: 0;
}

.author-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.author-role {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.author-rating {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.author-rating svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   FAQ
   ============================================ */
.faq {
  background: var(--bg-page);
}

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

.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: var(--primary-100);
}

.faq-item.open {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(22, 93, 255, 0.1);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  text-align: left;
  gap: 16px;
  transition: color 0.2s ease;
}

.faq-item.open .faq-question {
  color: var(--primary);
}

.faq-arrow {
  width: 20px;
  height: 20px;
  color: var(--text-tertiary);
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.faq-item.open .faq-arrow {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============================================
   联系咨询
   ============================================ */
.contact {
  background: var(--bg-white);
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info .section-title {
  text-align: left;
  font-size: 36px;
}

.contact-info .section-eyebrow {
  margin-bottom: 16px;
}

.contact-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 36px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-method-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-50);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.contact-method-icon svg {
  width: 22px;
  height: 22px;
}

.contact-method-label {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 2px;
}

.contact-method-value {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
}

.qr-code {
  background: var(--bg-page);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  max-width: 280px;
  border: 1px solid var(--border-light);
}

.qr-img-wrap {
  width: 170px;
  height: 170px;
  margin: 0 auto 16px;
  background: #fff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.qr-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.qr-code p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.qr-wechat {
  display: inline-block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  background: var(--primary-50);
  padding: 4px 12px;
  border-radius: 100px;
}

/* 表单 */
.contact-form-wrap {
  background: #fff;
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  padding: 44px;
  border: 1px solid var(--border-light);
  position: relative;
}

.contact-form h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.required {
  color: var(--danger);
}

.form-group input[type="text"],
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text-primary);
  transition: all 0.2s ease;
  background: #fff;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.1);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--danger);
}

.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: 6px;
  min-height: 16px;
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
  user-select: none;
}

.checkbox-item input[type="checkbox"] {
  display: none;
}

.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--border-medium);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.checkbox-item input:checked + .checkbox-custom {
  background: var(--primary);
  border-color: var(--primary);
}

.checkbox-item input:checked + .checkbox-custom::after {
  content: '';
  width: 10px;
  height: 6px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translateY(-1px);
}

.checkbox-item input:checked ~ span {
  color: var(--primary);
  font-weight: 500;
}

.form-privacy {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 16px;
}

.form-privacy svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* 表单成功 */
.form-success {
  display: none;
  text-align: center;
  padding: 20px 0;
}

.form-success.show {
  display: block;
  animation: fadeInUp 0.4s ease;
}

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

.success-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
}

.success-icon svg {
  width: 100%;
  height: 100%;
}

.form-success h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.form-success p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: #1D2129;
  color: var(--text-placeholder);
  padding: 60px 0 24px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.footer-brand .logo-text {
  background: linear-gradient(135deg, #4080FF, #94BFFF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #86909C;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

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

.footer-col li {
  font-size: 14px;
  color: #86909C;
}

.footer-col a {
  color: #86909C;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: #4E5969;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-links a {
  color: #4E5969;
}

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

/* ============================================
   悬浮按钮（移动端）
   ============================================ */
.floating-cta {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 99;
}

.float-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 22px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease;
}

.float-btn svg {
  width: 20px;
  height: 20px;
}

.float-btn-primary {
  background: var(--primary);
  color: #fff;
}

.float-btn-primary:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}

.hide-mobile {
  display: inline;
}

/* ============================================
   响应式适配
   ============================================ */

/* 平板 */
@media (max-width: 1024px) {
  .section {
    padding: 80px 0;
  }

  .section-title {
    font-size: 32px;
  }

  .hero {
    min-height: auto;
    padding: calc(var(--nav-height) + 40px) 0 60px;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-title {
    font-size: 42px;
  }

  .hero-visual {
    order: -1;
  }

  .search-mockup {
    max-width: 420px;
  }

  .platforms-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .process-timeline {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .process-line {
    display: none;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
  }

  .pricing-card.pricing-popular {
    transform: none;
    order: -1;
  }

  .pricing-card.pricing-popular:hover {
    transform: translateY(-6px);
  }

  .cases-grid,
  .testimonials {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-wrap {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links.mobile-open {
    display: flex;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 0;
    justify-content: flex-start;
    overflow-y: auto;
  }

  .nav-links.mobile-open a {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 16px;
    width: 100%;
  }

  .nav-admin-link {
    display: flex !important;
    color: var(--primary) !important;
    font-weight: 600 !important;
  }

  .nav-links.mobile-open a::after {
    display: none;
  }
}

/* 手机 */
@media (max-width: 640px) {
  :root {
    --nav-height: 60px;
  }

  .container {
    padding: 0 20px;
  }

  .section {
    padding: 60px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .section-title {
    font-size: 26px;
  }

  .section-desc {
    font-size: 14px;
  }

  .hero {
    padding: calc(var(--nav-height) + 30px) 0 50px;
  }

  .hero-badge {
    font-size: 13px;
    padding: 6px 14px;
    margin-bottom: 18px;
  }

  .hero-title {
    font-size: 32px;
    margin-bottom: 14px;
  }

  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 28px;
  }

  .hide-mobile {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
    margin-bottom: 36px;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stats {
    gap: 20px;
    justify-content: space-between;
  }

  .stat-num {
    font-size: 26px;
  }

  .stat-label {
    font-size: 12px;
  }

  .stat-divider {
    height: 32px;
  }

  .search-mockup {
    max-width: 100%;
  }

  .search-platform-tabs {
    padding: 10px 12px 0;
  }

  .search-platform-tabs .tab {
    padding: 6px 12px;
    font-size: 12px;
  }

  .search-box {
    padding: 14px 16px;
  }

  .search-input {
    font-size: 14px;
  }

  .dropdown-item {
    padding: 10px 16px;
  }

  .dropdown-item-text {
    font-size: 14px;
  }

  .scroll-hint {
    display: none;
  }

  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .platform-card {
    padding: 24px 16px;
  }

  .platform-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 14px;
  }

  .platform-name {
    font-size: 15px;
    margin-bottom: 6px;
  }

  .platform-desc {
    font-size: 13px;
    margin-bottom: 12px;
  }

  .platform-tags span {
    font-size: 11px;
    padding: 3px 8px;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .adv-card {
    padding: 24px 20px;
  }

  .adv-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 14px;
  }

  .adv-icon svg {
    width: 24px;
    height: 24px;
  }

  .adv-card h3 {
    font-size: 17px;
    margin-bottom: 8px;
  }

  .adv-card p {
    font-size: 14px;
  }

  .process-timeline {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .process-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 16px;
  }

  .process-icon svg {
    width: 32px;
    height: 32px;
  }

  .process-item h3 {
    font-size: 16px;
    margin-bottom: 6px;
  }

  .process-item p {
    font-size: 13px;
  }

  .pricing-card {
    padding: 32px 24px;
  }

  .pricing-header h3 {
    font-size: 20px;
  }

  .price-amount {
    font-size: 42px;
  }

  .cases-grid,
  .testimonials {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .case-card {
    padding: 24px;
  }

  .case-title {
    font-size: 16px;
  }

  .testimonial-card {
    padding: 24px;
  }

  .testimonial-quote {
    font-size: 48px;
  }

  .faq-question {
    padding: 16px 20px;
    font-size: 15px;
  }

  .faq-item.open .faq-answer {
    padding: 0 20px 16px;
  }

  .faq-answer p {
    font-size: 14px;
  }

  .contact-form-wrap {
    padding: 28px 24px;
  }

  .contact-form h3 {
    font-size: 20px;
  }

  .checkbox-group {
    gap: 10px;
  }

  .checkbox-item {
    font-size: 13px;
  }

  .contact-info .section-title {
    font-size: 28px;
  }

  .qr-code {
    max-width: 100%;
  }

  .footer {
    padding: 40px 0 20px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 28px;
    margin-bottom: 20px;
  }

  .footer-brand p {
    max-width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 10px;
    font-size: 12px;
  }

  .floating-cta {
    display: block;
  }

  .nav-actions .btn {
    display: none;
  }

  .btn-lg {
    padding: 12px 24px;
    font-size: 15px;
  }
}

@media (max-width: 400px) {
  .hero-title {
    font-size: 28px;
  }

  .platform-tags {
    flex-direction: column;
    align-items: center;
  }
}

/* 减动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}