/* ========================================
   好酷游官网 - 主样式文件
   深色科技风格主题
   ======================================== */

/* CSS 变量定义 */
:root {
  /* 主色调 - 保持不变 */
  --color-primary: #4f46e5;
  --color-primary-dark: #3730a3;
  --color-secondary: #ec4899;
  --color-accent: #10b981;

  /* 背景色 - 深色模式 */
  --color-bg-dark: #020617;
  /* 极深蓝/黑 */
  --color-bg-darker: #000000;
  --color-bg-card: #050512;
  --color-bg-card-hover: #080a18;
  /* Darker Hover */

  /* 文字色 - 浅色模式 */
  --color-text: #f8fafc;
  /* Slate 50 */
  --color-text-secondary: #cbd5e1;
  /* Slate 300 */
  --color-text-muted: #94a3b8;
  /* Slate 400 */

  /* 边框和阴影 */
  --color-border: #1a1a3a;
  --color-cyan: #00d2ff;
  --color-glow: rgba(0, 210, 255, 0.3);
  --shadow-card: 0 10px 40px -10px rgba(0, 0, 0, 0.8), 0 0 1px rgba(0, 210, 255, 0.1);
  --shadow-glow: 0 0 20px rgba(0, 210, 255, 0.2);

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
  /* slightly lighter for dark bg */
  --gradient-bg: radial-gradient(circle at top left, #050512 0%, #000000 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);

  /* 字体 - 系统原生优化 */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: clamp(0.75rem, 1.5vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 1.8vw, 0.95rem);
  --font-size-base: clamp(0.95rem, 2vw, 1rem);
  --font-size-lg: clamp(1rem, 2.2vw, 1.125rem);
  --font-size-xl: clamp(1.125rem, 2.5vw, 1.25rem);
  --font-size-2xl: clamp(1.25rem, 3vw, 1.5rem);
  --font-size-3xl: clamp(1.5rem, 4vw, 1.875rem);
  --font-size-4xl: clamp(1.875rem, 5vw, 2.25rem);
  --font-size-5xl: clamp(2.5rem, 7vw, 3rem);

  /* 间距 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* 过渡 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);

  /* 导航栏高度 */
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  font-size: clamp(14px, 1.5vw, 16px);
  scrollbar-width: none;
  /* Firefox */
  -ms-overflow-style: none;
  /* IE and Edge */
}

/* Hide scrollbar for Chrome, Safari and Opera */
html::-webkit-scrollbar {
  display: none;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

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

ul,
ol {
  list-style: none;
}

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

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

/* 容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* 区块标题 */
.section__title {
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__subtitle {
  font-size: clamp(0.95rem, 2.5vw, 1.125rem);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-text);
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
}


/* ========================================
   导航栏样式
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-base);
  background: transparent;
}

.header.scrolled {
  background: rgba(15, 23, 42, 0.9);
  /* Opaque Black-Gray (Slate 900) */
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: contain;
  /* background: #fff; Optional: if transparency needs a bg, but usually png handles itself */
  flex-shrink: 0;
}

.logo-info {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 6px;
  line-height: 1;
}

/* Logo Text Styles - Unified & Animated */
.logo-brand,
.logo-dot,
.logo-desc {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.5px;

  /* Gradient Text Flow - Adjusted for Light Theme */
  background: linear-gradient(90deg, #4f46e5 0%, #7c3aed 33%, #ec4899 66%, #4f46e5 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;

  /* Animation: Flowing Color + Subtle Glow */
  animation: logoFlow 3s linear infinite;
}

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

  50% {
    background-position: 100% 50%;
    filter: drop-shadow(0 0 8px rgba(79, 70, 229, 0.3));
  }

  100% {
    background-position: 200% 50%;
  }
}

.logo-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.nav__menu {
  display: flex;
  gap: var(--spacing-xl);
}

.nav__link {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  padding: var(--spacing-sm) var(--spacing-md);
  position: relative;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: all var(--transition-base);
  transform: translateX(-50%);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  width: 32px;
  height: 32px;
  position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  position: absolute;
  transition: all var(--transition-base);
}

.hamburger {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hamburger::before,
.hamburger::after {
  content: '';
  left: 0;
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  top: 8px;
}

/* ========================================
   Hero 首屏样式
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  overflow: hidden;
}

.hero__particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: auto;
}

.hero__content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: var(--spacing-4xl) 0;
}

.hero__title {
  margin-bottom: var(--spacing-lg);
}

.hero__title-main {
  display: block;
  font-size: clamp(3rem, 10vw, 5rem);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 20px 80px rgba(79, 70, 229, 0.15);
  line-height: 1.2;
}

.hero__title-sub {
  display: block;
  font-size: clamp(1.125rem, 3.5vw, 1.75rem);
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-md);
}

.hero__tagline {
  font-size: clamp(1rem, 2.5vw, 1.125rem);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-2xl);
  background: var(--gradient-primary);
  color: var(--color-text);
  font-size: var(--font-size-lg);
  font-weight: 600;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
}

.hero__cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 50px rgba(0, 212, 255, 0.5);
}

.hero__scroll {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.hero__scroll-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.hero__scroll-icon {
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-text-muted);
  border-radius: var(--radius-full);
  position: relative;
}

.hero__scroll-icon::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transform: translateX(-50%);
  animation: scrollDown 1.5s ease-in-out infinite;
}

@keyframes scrollDown {

  0%,
  100% {
    opacity: 1;
    top: 8px;
  }

  50% {
    opacity: 0.3;
    top: 20px;
  }
}


/* ========================================
   服务展示样式
   ======================================== */
.services {
  padding: var(--spacing-4xl) 0;
  background: transparent;
  position: relative;
  z-index: 1;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  perspective: 1000px;
}

.service__card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  transform: perspective(1000px);
}

.service__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.service__card:hover {
  background: var(--color-bg-card-hover);
  box-shadow: 0 0 30px rgba(0, 210, 255, 0.15);
  border-color: var(--color-cyan);
  transform: translateY(-5px);
}

.service__card:hover::before {
  transform: scaleX(1);
}

.service__icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateZ(20px);
  transition: all var(--transition-base);
}

.service__icon svg {
  width: 100%;
  height: 100%;
  color: var(--color-cyan);
  filter: drop-shadow(0 0 15px rgba(0, 210, 255, 0.6));
  transition: all var(--transition-base);
}

.service__card:hover .service__icon svg {
  color: #ffffff;
  /* White Icon on Hover */
  filter: drop-shadow(0 0 20px var(--color-cyan)) drop-shadow(0 0 10px var(--color-cyan));
  /* Strong Cyan Glow */
  transform: scale(1.1) rotate(0deg);
}

.service__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  transform: translateZ(15px);
}

.service__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
  transform: translateZ(10px);
}

.service__features {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
}

.service__feature {
  font-size: var(--font-size-xs);
  color: var(--color-cyan);
  background: rgba(0, 210, 255, 0.08);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 210, 255, 0.2);
  transition: all var(--transition-base);
}

.service__feature:hover {
  background: rgba(0, 210, 255, 0.2);
  box-shadow: 0 0 10px rgba(0, 210, 255, 0.2);
}

/* ========================================
   关于我们样式
   ======================================== */
.about {
  padding: var(--spacing-4xl) 0;
  background: transparent;
  position: relative;
  z-index: 1;
}

.about__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.about__intro p {
  font-size: clamp(0.95rem, 2vw, 1.0625rem);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.stat__item {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.stat__number {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__suffix {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
}

.stat__label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
}

.about__advantages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.advantage__item {
  text-align: center;
  padding: var(--spacing-xl);
}

.advantage__icon {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.advantage__icon svg {
  width: 100%;
  height: 100%;
  color: var(--color-primary);
  filter: drop-shadow(0 0 10px var(--color-glow));
  transition: all var(--transition-base);
}

.advantage__item:hover .advantage__icon svg {
  color: #fff;
  filter: drop-shadow(0 0 20px var(--color-primary)) drop-shadow(0 0 12px var(--color-primary));
  transform: scale(1.2) rotate(-5deg);
}

.advantage__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.advantage__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ========================================
   联系我们样式
   ======================================== */
.contact {
  padding: var(--spacing-4xl) 0;
  background: transparent;
  position: relative;
  z-index: 1;
}

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

.contact__info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.contact__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  background: var(--color-bg-card);
  /* Made opaque as requested */
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.contact__item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.contact__icon {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent !important;
  box-shadow: none !important;
  border: none !important;
  transition: all var(--transition-base);
}

.contact__icon svg {
  width: 100%;
  height: 100%;
  color: var(--color-primary);
  filter: drop-shadow(0 0 10px var(--color-glow));
  transition: all var(--transition-base);
}

.contact__item:hover .contact__icon svg {
  color: #fff;
  filter: drop-shadow(0 0 18px var(--color-primary)) drop-shadow(0 0 10px var(--color-primary));
  transform: scale(1.15);
}

.contact__detail h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.contact__detail p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.contact__cta {
  text-align: center;
}

/* ========================================
   页脚样式
   ======================================== */
.footer {
  padding: var(--spacing-2xl) 0;
  background: transparent;
  border-top: 1px solid var(--color-border);
  position: relative;
  z-index: 1;
}

.footer__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
}

.footer__logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

.footer__links {
  display: flex;
  gap: var(--spacing-xl);
}

.footer__links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.footer__bottom p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}