/* ==================== 全局样式 ==================== */
:root {
  --color-bg-primary: #0a0e27;
  --color-bg-secondary: #1a1f3a;
  --color-bg-tertiary: #252d4a;
  --color-accent-primary: #00d4ff;
  --color-accent-secondary: #ff006e;
  --color-accent-tertiary: #8338ec;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b0b8d4;
  --color-text-tertiary: #7a8199;
  --color-border: rgba(0, 212, 255, 0.1);
  --color-border-light: rgba(255, 255, 255, 0.05);
  --header-height: 70px;
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html,
body {
  width: 100%;
  height: 100%;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  overflow-x: hidden;
}

body {
  cursor: pointer;
}

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

button {
  font: inherit;
  border: none;
  background: transparent;
  padding: 0;
  cursor: pointer;
  color: inherit;
}

/* ==================== 导航栏 ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 14, 39, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.navbar__content {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-smooth);
}

.navbar__logo:hover {
  color: var(--color-accent-primary);
}

.navbar__logo img {
  width: 28px;
  height: 28px;
}

.navbar__download-btn {
  padding: 10px 24px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-tertiary));
  color: var(--color-bg-primary);
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.navbar__download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.navbar__download-btn:active {
  transform: translateY(0);
}

/* ==================== 主要内容 ==================== */
.main-content {
  padding-top: var(--header-height);
  width: 100%;
}

/* ==================== 英雄区域 ==================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 60px 30px;
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(131, 56, 236, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero__container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__text {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.hero__title {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
  animation: slideInLeft 0.8s ease-out;
}

.hero__title .highlight {
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  animation: slideInLeft 0.8s ease-out 0.1s both;
}

.hero__cta {
  padding: 16px 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-tertiary));
  color: var(--color-bg-primary);
  font-weight: 600;
  font-size: 16px;
  transition: all var(--transition-smooth);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.3);
  animation: slideInLeft 0.8s ease-out 0.2s both;
}

.hero__cta:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(0, 212, 255, 0.4);
}

.hero__cta:active {
  transform: translateY(-2px);
}

.hero__visual {
  position: relative;
  height: 600px;
  animation: slideInRight 0.8s ease-out;
}

/* 手机展示 */
.phone-showcase {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-frame {
  position: relative;
  width: 280px;
  height: 560px;
  background: var(--color-bg-secondary);
  border: 12px solid var(--color-bg-tertiary);
  border-radius: 40px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 212, 255, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: all var(--transition-smooth);
}

.phone-frame:hover {
  box-shadow: 0 30px 80px rgba(0, 212, 255, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transform: translateY(-10px);
}

.phone-screen {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 32px;
}

/* 浮动卡片 */
.floating-card {
  position: absolute;
  background: rgba(26, 31, 58, 0.8);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 12px;
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-smooth);
}

.floating-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-accent-primary);
  box-shadow: 0 12px 48px rgba(0, 212, 255, 0.2);
}

.floating-card img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 8px;
}

.card-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  text-align: center;
  font-weight: 500;
}

.card-1 {
  top: 50px;
  right: -80px;
  width: 200px;
  animation: float 3s ease-in-out infinite;
}

.card-2 {
  bottom: 40px;
  left: -100px;
  width: 220px;
  animation: float 3.5s ease-in-out infinite 0.5s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* ==================== 特性区域 ==================== */
.features {
  padding: 120px 30px;
  background: var(--color-bg-secondary);
  position: relative;
}

.features::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent-primary), transparent);
}

.features__header {
  max-width: 1200px;
  margin: 0 auto 80px;
  text-align: center;
}

.features__header h2 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--color-text-primary), var(--color-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.features__header p {
  font-size: 18px;
  color: var(--color-text-secondary);
}

.features__grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.feature-item {
  position: relative;
  padding: 40px;
  background: linear-gradient(135deg, rgba(37, 45, 74, 0.5), rgba(26, 31, 58, 0.5));
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all var(--transition-smooth);
  overflow: hidden;
}

.feature-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.feature-item:hover {
  border-color: var(--color-accent-primary);
  background: linear-gradient(135deg, rgba(37, 45, 74, 0.8), rgba(26, 31, 58, 0.8));
  transform: translateY(-10px);
  box-shadow: 0 20px 50px rgba(0, 212, 255, 0.15);
}

.feature-item:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(131, 56, 236, 0.2));
  border: 1px solid var(--color-border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: all var(--transition-smooth);
}

.feature-item:hover .feature-icon {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.3), rgba(131, 56, 236, 0.3));
  border-color: var(--color-accent-primary);
}

.feature-item h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--color-text-primary);
}

.feature-item p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.feature-bg,
.feature-preview,
.feature-manga {
  margin-top: 20px;
  border-radius: 12px;
  overflow: hidden;
  opacity: 0.8;
  transition: opacity var(--transition-smooth);
}

.feature-item:hover .feature-bg,
.feature-item:hover .feature-preview,
.feature-item:hover .feature-manga {
  opacity: 1;
}

.feature-bg img,
.feature-preview img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.feature-manga {
  display: flex;
  gap: 15px;
  justify-content: center;
}

.feature-manga img {
  width: 170px;
  height: auto;
  border-radius: 8px;
}

/* ==================== 优势区域 ==================== */
.benefits {
  padding: 120px 30px;
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.benefits h2 {
  font-size: 48px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 80px;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.benefits__list {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
}

.benefit-item {
  padding: 40px;
  background: rgba(26, 31, 58, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: all var(--transition-smooth);
  position: relative;
}

.benefit-item:hover {
  border-color: var(--color-accent-tertiary);
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(131, 56, 236, 0.15);
}

.benefit-number {
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 15px;
}

.benefit-item h4 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.benefit-item p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==================== CTA 区域 ==================== */
.cta-section {
  padding: 100px 30px;
  background: var(--color-bg-secondary);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 0, 110, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-section h2 {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.cta-section p {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}

.cta-button {
  padding: 16px 50px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-accent-secondary), var(--color-accent-primary));
  color: var(--color-bg-primary);
  font-weight: 600;
  font-size: 16px;
  transition: all var(--transition-smooth);
  box-shadow: 0 8px 25px rgba(255, 0, 110, 0.3);
  position: relative;
  z-index: 1;
}

.cta-button:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(255, 0, 110, 0.4);
}

/* ==================== 页脚 ==================== */
.footer {
  padding: 40px 30px;
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 14px;
}

/* ==================== 下载弹窗 ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-smooth);
  z-index: 2000;
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.download-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  width: 90%;
  max-width: 500px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-smooth);
  z-index: 2010;
}

.download-modal.show {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  font-size: 28px;
  color: var(--color-text-secondary);
  transition: color var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--color-accent-primary);
}

.modal-content h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 10px;
}

.modal-content p {
  color: var(--color-text-secondary);
  margin-bottom: 30px;
  font-size: 15px;
}

.download-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
  margin-bottom: 30px;
}

.download-option {
  padding: 20px;
  background: rgba(37, 45, 74, 0.5);
  border: 2px solid var(--color-border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transition: all var(--transition-smooth);
  cursor: pointer;
}

.download-option:hover {
  border-color: var(--color-accent-primary);
  background: rgba(37, 45, 74, 0.8);
  transform: translateY(-4px);
}

.option-icon {
  font-size: 32px;
}

.option-text {
  font-weight: 600;
  color: var(--color-text-primary);
}

.download-info {
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
}

.download-info p {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-bottom: 15px;
}

.download-link-box {
  display: flex;
  gap: 10px;
}

.download-link-input {
  flex: 1;
  padding: 12px;
  background: rgba(10, 14, 39, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-primary);
  font-size: 13px;
  font-family: monospace;
}

.download-link-input:focus {
  outline: none;
  border-color: var(--color-accent-primary);
}

.copy-btn {
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-tertiary));
  color: var(--color-bg-primary);
  border-radius: 8px;
  font-weight: 600;
  font-size: 13px;
  transition: all var(--transition-smooth);
  white-space: nowrap;
}

.copy-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

/* ==================== 加载指示器 ==================== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  opacity: 1;
  visibility: visible;
  transition: all var(--transition-smooth);
}

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

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.spinner-ring {
  width: 60px;
  height: 60px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-spinner p {
  color: var(--color-text-secondary);
  font-size: 16px;
  font-weight: 500;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ==================== 动画 ==================== */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .navbar__content {
    padding: 0 20px;
  }

  .hero {
    min-height: auto;
    padding: 40px 20px;
  }

  .hero__container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero__title {
    font-size: 36px;
  }

  .hero__visual {
    height: 400px;
  }

  .phone-frame {
    width: 200px;
    height: 400px;
  }

  .card-1 {
    width: 150px;
    right: -30px;
  }

  .card-2 {
    width: 160px;
    left: -40px;
  }

  .features {
    padding: 80px 20px;
  }

  .features__header h2 {
    font-size: 32px;
  }

  .features__grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .benefits h2 {
    font-size: 32px;
  }

  .benefits__list {
    grid-template-columns: 1fr;
  }

  .cta-section {
    padding: 60px 20px;
  }

  .cta-section h2 {
    font-size: 32px;
  }

  .download-modal {
    width: 95%;
    padding: 30px;
  }

  .download-options {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .navbar__content {
    padding: 0 15px;
  }

  .navbar__logo {
    gap: 8px;
    font-size: 14px;
  }

  .navbar__download-btn {
    padding: 8px 16px;
    font-size: 12px;
  }

  .hero {
    padding: 30px 15px;
  }

  .hero__title {
    font-size: 28px;
  }

  .hero__subtitle {
    font-size: 15px;
  }

  .hero__cta {
    padding: 14px 30px;
    font-size: 14px;
  }

  .hero__visual {
    height: 300px;
  }

  .phone-frame {
    width: 150px;
    height: 300px;
  }

  .features {
    padding: 60px 15px;
  }

  .features__header h2 {
    font-size: 24px;
  }

  .features__header {
    margin-bottom: 50px;
  }

  .feature-item {
    padding: 25px;
  }

  .benefits {
    padding: 60px 15px;
  }

  .benefits h2 {
    font-size: 24px;
    margin-bottom: 50px;
  }

  .benefit-number {
    font-size: 36px;
  }

  .benefit-item h4 {
    font-size: 16px;
  }

  .cta-section {
    padding: 40px 15px;
  }

  .cta-section h2 {
    font-size: 24px;
  }

  .cta-button {
    padding: 12px 30px;
    font-size: 14px;
  }

  .download-modal {
    width: 98%;
    padding: 20px;
  }

  .modal-content h2 {
    font-size: 22px;
  }

  .download-link-box {
    flex-direction: column;
  }

  .copy-btn {
    width: 100%;
  }
}