/* ===== 变量与重置 ===== */
:root {
  --primary: #ffffff;
  --primary-dark: #e5e5e5;
  --primary-light: #fafafa;
  --accent: #d4d4d4;
  --accent-light: #f5f5f5;
  --gradient: linear-gradient(135deg, #ffffff 0%, #a3a3a3 100%);
  --gradient-warm: linear-gradient(135deg, #f5f5f5 0%, #737373 100%);
  --bg: #000000;
  --bg-card: #0a0a0a;
  --bg-card-hover: #171717;
  --text: #ffffff;
  --text-muted: #a3a3a3;
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

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

/* ===== Lucide Icons ===== */
[data-lucide] {
  display: inline-block;
  vertical-align: middle;
}

.icon svg,
.logo-icon svg,
.float-icon svg,
.about-icon svg,
.orbit-center svg,
.orbit-item svg,
.service-icon svg,
.service-mini-icon svg,
.feature-icon svg,
.contact-icon svg,
.testimonial-stars svg,
.faq-icon svg,
.slider-btn svg,
.back-to-top svg,
.loader-globe svg {
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  animation: bounce-soft 2s ease-in-out infinite;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 加载动画 ===== */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s, visibility 0.6s;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-inner {
  text-align: center;
}

.loader-globe {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: #ffffff;
  animation: pulse-globe 1.5s ease-in-out infinite;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000000;
}

.loader-globe svg {
  width: 36px;
  height: 36px;
  animation: spin-slow 3s linear infinite;
}

.loader-inner p {
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
}

.loader-bar {
  width: 200px;
  height: 4px;
  background: var(--bg-card);
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto;
}

.loader-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: #ffffff;
  border-radius: 2px;
  animation: load-bar 1.5s ease-in-out forwards;
}

@keyframes load-bar {
  to { width: 100%; }
}

@keyframes pulse-globe {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4); }
  50% { transform: scale(1.05); box-shadow: 0 0 30px 10px rgba(255, 255, 255, 0.2); }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ===== 粒子画布 ===== */
#particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn-primary {
  background: #ffffff;
  color: #000000;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.12);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.2);
  background: #f5f5f5;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 2px solid rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* ===== 导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
}

.logo-text {
  color: #ffffff;
}

@keyframes bounce-soft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-links a {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: #ffffff;
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a:hover::after {
  width: 60%;
}

.nav-cta {
  padding: 10px 22px;
  font-size: 14px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

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

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(255, 255, 255, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 60% 80%, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
}

.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%230a0a0a' fill-opacity='0.8' d='M0,192L48,197.3C96,203,192,213,288,229.3C384,245,480,267,576,250.7C672,235,768,181,864,181.3C960,181,1056,235,1152,234.7C1248,235,1344,181,1392,154.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") no-repeat bottom;
  background-size: cover;
  animation: wave-move 8s ease-in-out infinite;
}

@keyframes wave-move {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(-20px); }
}

.floating-icons {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.float-icon {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.2;
  color: #ffffff;
  animation: float-around 15s ease-in-out infinite;
  animation-delay: calc(var(--i) * -2s);
}

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

.float-icon:nth-child(1) { top: 15%; left: 10%; }
.float-icon:nth-child(2) { top: 25%; right: 15%; }
.float-icon:nth-child(3) { top: 60%; left: 5%; }
.float-icon:nth-child(4) { top: 70%; right: 10%; }
.float-icon:nth-child(5) { top: 40%; left: 20%; }
.float-icon:nth-child(6) { top: 10%; right: 30%; }
.float-icon:nth-child(7) { top: 80%; left: 30%; }
.float-icon:nth-child(8) { top: 50%; right: 25%; }

@keyframes float-around {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(20px, -30px) rotate(10deg); }
  50% { transform: translate(-10px, 20px) rotate(-5deg); }
  75% { transform: translate(15px, 10px) rotate(5deg); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 24px 120px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
  animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 255, 255, 0); }
  50% { box-shadow: 0 0 20px 5px rgba(255, 255, 255, 0.06); }
}

.hero-title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 24px;
}

.gradient-text {
  color: #ffffff;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 60px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

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

.stat-num {
  display: block;
  font-size: 36px;
  font-weight: 800;
  color: #ffffff;
}

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

.animate-in {
  opacity: 0;
  transform: translateY(30px);
  animation: fade-up 0.8s ease forwards;
}

.animate-in:nth-child(1) { animation-delay: 0.2s; }
.animate-in:nth-child(2) { animation-delay: 0.4s; }
.animate-in:nth-child(3) { animation-delay: 0.6s; }
.animate-in:nth-child(4) { animation-delay: 0.8s; }
.animate-in:nth-child(5) { animation-delay: 1s; }

@keyframes fade-up {
  to { opacity: 1; transform: translateY(0); }
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  animation: fade-bounce 2s ease-in-out infinite;
}

.scroll-mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  margin: 8px auto 0;
  position: relative;
}

.scroll-mouse::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: #ffffff;
  border-radius: 2px;
  animation: scroll-dot 2s ease-in-out infinite;
}

@keyframes scroll-dot {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.3; transform: translateX(-50%) translateY(12px); }
}

@keyframes fade-bounce {
  0%, 100% { opacity: 0.6; transform: translateX(-50%) translateY(0); }
  50% { opacity: 1; transform: translateX(-50%) translateY(-5px); }
}

/* ===== 通用 Section ===== */
.section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

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

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 17px;
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ===== 关于我们 ===== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: #ffffff;
  transform: scaleX(0);
  transition: var(--transition);
}

.about-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow);
}

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

.about-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

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

.about-card h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.about-card p {
  color: var(--text-muted);
  font-size: 15px;
}

.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
}

.about-story h3 {
  font-size: 24px;
  margin-bottom: 20px;
}

.about-story p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 15px;
}

.orbit {
  width: 280px;
  height: 280px;
  margin: 0 auto;
  position: relative;
  animation: orbit-spin 20s linear infinite;
}

.orbit-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.orbit-center svg {
  width: 40px;
  height: 40px;
}

.orbit-item {
  position: absolute;
  top: 50%;
  left: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: #ffffff;
  transform: rotate(var(--angle)) translateX(120px) rotate(calc(-1 * var(--angle)));
  animation: counter-spin 20s linear infinite;
}

.orbit-item svg {
  width: 22px;
  height: 22px;
}

@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes counter-spin {
  from { transform: rotate(var(--angle)) translateX(120px) rotate(calc(-1 * var(--angle))); }
  to { transform: rotate(calc(var(--angle) + 360deg)) translateX(120px) rotate(calc(-1 * (var(--angle) + 360deg))); }
}

/* ===== 核心服务 ===== */
.services {
  background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 10, 0.8) 50%, transparent 100%);
}

.services-showcase {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

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

.service-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: var(--shadow);
}

.service-card:hover::after {
  top: -30%;
  right: -30%;
}

.service-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 4px 14px;
  background: #ffffff;
  color: #000000;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
}

.service-badge.premium {
  background: transparent;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.service-icon-wrap {
  width: 72px;
  height: 72px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  animation: icon-float 3s ease-in-out infinite;
}

@keyframes icon-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.service-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

.service-icon svg {
  width: 36px;
  height: 36px;
}

.service-card h3 {
  font-size: 28px;
  margin-bottom: 12px;
}

.service-desc {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 15px;
}

.service-features {
  margin-bottom: 32px;
}

.service-features li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  color: var(--text-muted);
  font-size: 14px;
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 14px;
  height: 14px;
  background-color: #ffffff;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") no-repeat center / contain;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") no-repeat center / contain;
}

.services-extra {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-mini {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
}

.service-mini:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.3);
}

.service-mini-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin: 0 auto 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.service-mini-icon svg {
  width: 26px;
  height: 26px;
}

.service-mini h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.service-mini p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 平台优势 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  position: relative;
  transition: var(--transition);
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow);
}

.feature-num {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 48px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.08);
  line-height: 1;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  transition: var(--transition);
}

.feature-icon svg {
  width: 26px;
  height: 26px;
}

.feature-card:hover .feature-icon {
  transform: scale(1.2) rotate(5deg);
}

.feature-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== 使用流程 ===== */
.process-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
}

.process-tab {
  padding: 12px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.process-tab.active,
.process-tab:hover {
  background: #ffffff;
  color: #000000;
  border-color: transparent;
}

.process-content {
  display: none;
}

.process-content.active {
  display: block;
  animation: tab-fade 0.5s ease;
}

@keyframes tab-fade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.process-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.process-step {
  text-align: center;
  flex: 1;
  max-width: 220px;
}

.step-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #ffffff;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  margin: 0 auto 16px;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
  animation: step-pulse 2s ease-in-out infinite;
}

.process-step:nth-child(1) .step-circle { animation-delay: 0s; }
.process-step:nth-child(3) .step-circle { animation-delay: 0.5s; }
.process-step:nth-child(5) .step-circle { animation-delay: 1s; }
.process-step:nth-child(7) .step-circle { animation-delay: 1.5s; }

@keyframes step-pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15); }
  50% { box-shadow: 0 4px 30px rgba(255, 255, 255, 0.25); }
}

.process-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, #ffffff, #737373);
  margin-top: 28px;
  flex-shrink: 0;
  animation: line-grow 1s ease forwards;
}

@keyframes line-grow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.process-step h4 {
  font-size: 16px;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 热门目的地 ===== */
.destinations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.dest-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  min-height: 200px;
  cursor: pointer;
  transition: var(--transition);
}

.dest-large {
  grid-row: span 2;
  min-height: 420px;
}

.dest-card:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow);
}

.dest-bg {
  position: absolute;
  inset: 0;
  transition: var(--transition);
}

.dest-card:hover .dest-bg {
  transform: scale(1.1);
}

.dest-info {
  position: absolute;
  inset: 0;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(transparent 30%, rgba(0, 0, 0, 0.7));
}

.dest-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border-radius: 50px;
  font-size: 12px;
  margin-bottom: 8px;
  width: fit-content;
}

.dest-info h3 {
  font-size: 22px;
  margin-bottom: 4px;
}

.dest-large .dest-info h3 {
  font-size: 28px;
}

.dest-info p {
  font-size: 14px;
  opacity: 0.85;
}

.dest-count {
  margin-top: 8px;
  font-size: 13px;
  color: #d4d4d4;
  font-weight: 600;
}

/* ===== 用户评价 ===== */
.testimonials {
  background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 10, 0.8) 50%, transparent 100%);
}

.testimonials-slider {
  overflow: hidden;
  position: relative;
}

.testimonials-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
  min-width: 100%;
  padding: 0 12px;
}

.testimonial-card > div:first-child,
.testimonial-card > p,
.testimonial-card > .testimonial-author {
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.testimonial-card {
  box-sizing: border-box;
}

.testimonial-card .testimonial-stars {
  display: flex;
  gap: 4px;
  color: #ffffff;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: var(--radius) var(--radius) 0 0;
  padding: 32px 32px 0;
}

.testimonial-stars svg {
  width: 18px;
  height: 18px;
  fill: #ffffff;
  stroke: #ffffff;
}

.testimonial-card p {
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  padding: 16px 32px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-muted);
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 20px 32px 32px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
}

.testimonial-author strong {
  display: block;
  font-size: 15px;
}

.testimonial-author span {
  font-size: 13px;
  color: var(--text-muted);
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 32px;
}

.slider-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slider-btn svg {
  width: 22px;
  height: 22px;
}

.slider-btn:hover {
  background: #ffffff;
  color: #000000;
  border-color: transparent;
}

.slider-dots {
  display: flex;
  gap: 8px;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg-card-hover);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.slider-dot.active {
  background: var(--primary);
  width: 28px;
  border-radius: 5px;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: rgba(255, 255, 255, 0.3);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: var(--bg-card);
  border: none;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: var(--transition);
}

.faq-question:hover {
  background: var(--bg-card-hover);
}

.faq-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

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

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

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

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

.faq-answer p {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ===== 联系我们 ===== */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
}

.contact-info h2 {
  font-size: 32px;
  margin: 12px 0 16px;
}

.contact-info > p {
  color: var(--text-muted);
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-item span.contact-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  flex-shrink: 0;
}

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

.contact-item strong {
  display: block;
  margin-bottom: 4px;
}

.contact-item p {
  color: var(--text-muted);
  font-size: 14px;
}

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

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.15);
}

.form-group textarea {
  resize: vertical;
}

/* ===== 页脚 ===== */
.footer {
  background: rgba(0, 0, 0, 0.95);
  border-top: 1px solid var(--border);
  padding: 60px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  margin: 16px 0 20px;
  line-height: 1.8;
}

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

.social-links a {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  transition: var(--transition);
}

.social-links a:hover {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

.footer-links h4 {
  font-size: 15px;
  margin-bottom: 16px;
}

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

.footer-links a {
  color: var(--text-muted);
  font-size: 14px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 4px;
}

.footer-bottom a {
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: #ffffff;
}

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  color: #000000;
  border: none;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

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

.back-to-top:hover {
  transform: translateY(-4px);
}

/* ===== 法律页面 ===== */
.legal-page {
  min-height: 100vh;
  padding-top: var(--header-h);
}

.legal-hero {
  padding: 60px 0 40px;
  text-align: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0%, transparent 100%);
}

.legal-hero h1 {
  font-size: 36px;
  margin-bottom: 12px;
}

.legal-hero p {
  color: var(--text-muted);
}

.legal-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 40px 0;
  flex-wrap: wrap;
}

.legal-tab {
  padding: 14px 36px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: 50px;
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.legal-tab.active {
  background: #ffffff;
  color: #000000;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.12);
}

.legal-tab:hover:not(.active) {
  border-color: #ffffff;
  color: var(--text);
}

.legal-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.legal-panel {
  display: none;
  animation: tab-fade 0.5s ease;
}

.legal-panel.active {
  display: block;
}

.legal-panel h2 {
  font-size: 24px;
  margin: 32px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}

.legal-panel h2:first-child {
  margin-top: 0;
}

.legal-panel h3 {
  font-size: 18px;
  margin: 24px 0 12px;
  color: #ffffff;
}

.legal-panel p,
.legal-panel li {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 12px;
}

.legal-panel ol,
.legal-panel ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-panel li {
  margin-bottom: 8px;
}

.legal-update {
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 32px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .about-grid,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-links a {
    padding: 12px 16px;
    font-size: 16px;
  }

  .nav-cta {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-stats {
    gap: 24px;
  }

  .about-grid,
  .services-showcase,
  .features-grid,
  .destinations-grid,
  .contact-wrapper,
  .about-story {
    grid-template-columns: 1fr;
  }

  .dest-large {
    grid-row: auto;
    min-height: 240px;
  }

  .process-steps {
    flex-direction: column;
    align-items: center;
  }

  .process-line {
    width: 2px;
    height: 40px;
    margin: 0;
  }

  .services-extra {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-form .form-row {
    grid-template-columns: 1fr;
  }

  .contact-wrapper {
    padding: 28px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .services-extra {
    grid-template-columns: 1fr;
  }

  .stat-num {
    font-size: 28px;
  }
}