/* 全局重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
}

/* 全局变量 - 科技蓝渐变 */
:root {
  --primary: #4361ee;
  --secondary: #3a0ca3;
  --light: #f8f9fa;
  --dark: #121212;
  --card: #1e1e2f;
  --gradient: linear-gradient(135deg, #4361ee, #3a0ca3);
}

body {
  background-color: var(--dark);
  color: var(--light);
  line-height: 1.7;
}

.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

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

ul {
  list-style: none;
}

.btn {
  display: inline-block;
  background: var(--gradient);
  color: #fff;
  padding: 12px 30px;
  border-radius: 50px;
  font-weight: bold;
  transition: 0.3s;
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(67, 97, 238, 0.3);
}

.section {
  padding: 70px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 32px;
  display: inline-block;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

/* 导航 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(18, 18, 18, 0.85);
  backdrop-filter: blur(10px);
  z-index: 999;
  padding: 15px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 22px;
  font-weight: bold;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav {
  display: flex;
  gap: 24px;
}

.nav a {
  font-size: 15px;
  transition: 0.3s;
}

.nav a:hover {
  color: #4361ee;
}

.menu-btn {
  display: none;
  font-size: 22px;
  cursor: pointer;
}

/* banner */
.banner {
  height: 100vh;
  min-height: 600px;
  background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url("banner.jpg");
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  text-align: center;
}

.banner h1 {
  font-size: 52px;
  margin-bottom: 10px;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.banner h2 {
  font-size: 20px;
  margin-bottom: 30px;
  font-weight: normal;
}

/* 简介 */
.intro-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  font-size: 16px;
  line-height: 1.9;
}

/* 下载 */
.download-section {
  background: #181825;
}

.download-box {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.download-item {
  background: var(--card);
  padding: 40px 30px;
  border-radius: 16px;
  text-align: center;
  width: 260px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transition: 0.3s;
}

.download-item:hover {
  transform: translateY(-5px);
}

.download-item i {
  font-size: 40px;
  color: #4361ee;
  margin-bottom: 20px;
}

.download-item h3 {
  margin-bottom: 20px;
}

/* 剧情 */
.story-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  font-size: 16px;
}

/* 特色 */
.feature-section {
  background: #181825;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.feature-item {
  background: var(--card);
  padding: 30px;
  border-radius: 14px;
  text-align: center;
  transition: 0.3s;
}

.feature-item:hover {
  transform: translateY(-4px);
}

.feature-item i {
  font-size: 30px;
  color: #4361ee;
  margin-bottom: 15px;
}

.feature-item h4 {
  margin-bottom: 10px;
  font-size: 18px;
}

/* 攻略 */
.guide-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--card);
  padding: 30px;
  border-radius: 14px;
}

.guide-content li {
  padding: 8px 0;
  position: relative;
  padding-left: 20px;
}

.guide-content li::before {
  content: "✓";
  color: #4361ee;
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* 截图 */
.screenshot-section {
  background: #181825;
}

.screenshot-box {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.screenshot-box img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 10px;
  transition: 0.3s;
}

.screenshot-box img:hover {
  transform: scale(1.03);
}

/* 评价 */
.comment-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
}

.comment-item {
  background: var(--card);
  padding: 25px;
  border-radius: 14px;
}

.comment-item .user {
  font-weight: bold;
  margin-bottom: 8px;
  color: #4361ee;
}

.comment-item .star {
  color: #ffb703;
  margin-bottom: 10px;
}

/* 底部 */
.footer {
  text-align: center;
  padding: 30px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 14px;
}

/* 自适应 */
@media (max-width: 992px) {
  .feature-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }
  .menu-btn {
    display: block;
  }
  .banner h1 {
    font-size: 36px;
  }
  .screenshot-box {
    grid-template-columns: repeat(2, 1fr);
  }
  .comment-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .section {
    padding: 50px 0;
  }
  .section-title h2 {
    font-size: 26px;
  }
  .screenshot-box {
    grid-template-columns: 1fr;
  }
  .feature-list {
    grid-template-columns: 1fr;
  }
}