/* ===== 全局变量与基础样式 ===== */
:root {
  --bg: #0b0710;
  --bg-soft: #140d1c;
  --card: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.08);
  --text: #f3eef7;
  --text-dim: #a99fb8;
  --red: #e8395a;
  --purple: #8b2ff5;
  --blue: #2fc8ff;
  --grad-main: linear-gradient(135deg, #ff3d6e 0%, #8b2ff5 55%, #4a2ff0 100%);
  --grad-soft: linear-gradient(135deg, rgba(255, 61, 110, 0.35), rgba(139, 47, 245, 0.35));
  --radius: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

.container {
  width: min(1120px, 90%);
  margin: 0 auto;
}

/* ===== 通用标题 ===== */
.sec-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.6rem;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sec-desc {
  text-align: center;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.section {
  padding: 4.5rem 0;
}

/* ===== 导航栏 ===== */
.nav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem clamp(1rem, 4vw, 3rem);
}

.nav-brand {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 2px;
}

.nav-brand span {
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-dim);
  font-size: 0.95rem;
  transition: color 0.3s;
}

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

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

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* 移动端导航打开状态 */
.nav-links.open {
  display: flex;
  animation: fadeIn 0.3s ease;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s, opacity 0.3s;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--grad-main);
  color: #fff;
  box-shadow: 0 8px 30px rgba(232, 57, 90, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(139, 47, 245, 0.45);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--purple);
  color: var(--blue);
}

.btn-lg {
  padding: 1rem 2.6rem;
  font-size: 1.1rem;
}

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 5rem;
  overflow: hidden;
  background:
    radial-gradient(circle at 15% 80%, rgba(255, 61, 110, 0.25), transparent 45%),
    radial-gradient(circle at 85% 20%, rgba(139, 47, 245, 0.3), transparent 50%),
    radial-gradient(circle at 60% 55%, rgba(47, 200, 255, 0.12), transparent 40%),
    var(--bg);
}

.hero-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, var(--bg) 100%);
  pointer-events: none;
}

.hero-tag {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 4px;
  color: var(--blue);
  border: 1px solid rgba(47, 200, 255, 0.4);
  padding: 0.35rem 1.2rem;
  border-radius: 50px;
  margin-bottom: 1.4rem;
}

.hero-inner h1 {
  font-size: clamp(2rem, 6vw, 3.6rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: var(--grad-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-dim);
  margin-bottom: 1.2rem;
}

.hero-meta {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 2rem;
  letter-spacing: 1px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 剧情简介 ===== */
.intro-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 2.4rem;
  max-width: 800px;
  margin: 0 auto;
}

.intro-card p {
  color: var(--text-dim);
  margin-bottom: 1.2rem;
}

.intro-card p:last-child {
  margin-bottom: 0;
  color: var(--text);
  font-size: 0.92rem;
}

.intro-card strong {
  color: var(--red);
}

/* ===== 看点卡片 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.4rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.6rem;
  text-align: center;
  transition: transform 0.4s, border-color 0.4s, background 0.4s;
}

.card:hover {
  transform: translateY(-8px);
  border-color: var(--purple);
  background: var(--grad-soft);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  font-size: 1.8rem;
  border-radius: 50%;
  background: var(--grad-main);
  color: #fff;
  margin-bottom: 1.2rem;
  box-shadow: 0 8px 24px rgba(232, 57, 90, 0.3);
}

.card h3 {
  margin-bottom: 0.6rem;
  font-size: 1.15rem;
}

.card p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* ===== 剧照区 ===== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem;
}

.gallery-item {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 3 / 2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

/* ===== 下载区 ===== */
.download {
  background:
    radial-gradient(circle at 50% 0%, rgba(232, 57, 90, 0.18), transparent 60%),
    var(--bg-soft);
}

.download-actions {
  display: flex;
  gap: 1.2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.4rem;
}

.download-tip {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
  transition: border-color 0.3s;
}

.faq-item[open] {
  border-color: var(--purple);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  font-size: 1.02rem;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--purple);
  transition: transform 0.3s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin-top: 0.8rem;
  color: var(--text-dim);
}

/* ===== 页脚 ===== */
.footer {
  padding: 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

/* ===== 滚动渐入动画 ===== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

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

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 1rem;
    right: 1rem;
    flex-direction: column;
    gap: 0.5rem;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.4rem;
    display: none;
  }

  .hero-inner {
    padding: 0 1.2rem;
  }

  .section {
    padding: 3.5rem 0;
  }

  .intro-card {
    padding: 1.5rem 1.4rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(45%, 1fr));
  }

  .btn-lg {
    font-size: 1rem;
    padding: 0.9rem 1.8rem;
  }
}