/* ========================================
   全站样式 - 原创视频创作发布平台
   配色方案：深红金色系 + 暗色背景
   ======================================== */

/* CSS变量定义 */
:root {
  --color-primary: #C41E3A;
  --color-primary-dark: #9B1730;
  --color-primary-light: #E8365A;
  --color-gold: #FFD700;
  --color-gold-dark: #D4A800;
  --color-bg-dark: #0F0F14;
  --color-bg-card: #1A1A24;
  --color-bg-section: #12121A;
  --color-text: #E8E8EC;
  --color-text-muted: #9A9AAE;
  --color-border: #2A2A3A;
  --color-success: #28C76F;
  --color-warning: #FF9F43;
  --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-heading: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
  --shadow-hover: 0 8px 32px rgba(196,30,58,0.2);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 重置与基础 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-dark);
  color: var(--color-text);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover { color: var(--color-gold-dark); }

ul, ol { list-style: none; }

/* 容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ========== 顶部导航 ========== */
.site-header {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1A1028 100%);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
  position: relative;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-logo img {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
}

.site-logo span {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 1px;
}

/* 汉堡菜单 */
.menu-toggle {
  display: none;
  background: none;
  border: 2px solid var(--color-gold);
  color: var(--color-gold);
  font-size: 1.5rem;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  line-height: 1;
}

.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 0.88rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--color-primary);
  color: #fff;
}

/* 移动端导航 */
@media (max-width: 768px) {
  .menu-toggle { display: block; }
  .main-nav {
    display: none;
    width: 100%;
    order: 3;
  }
  .main-nav.open { display: block; }
  .main-nav ul {
    flex-direction: column;
    gap: 2px;
  }
  .main-nav a {
    padding: 12px 16px;
    font-size: 1rem;
    border-bottom: 1px solid var(--color-border);
  }
}

/* ========== Hero横幅 ========== */
.hero-section {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(145deg, #1A0A1E 0%, var(--color-bg-dark) 50%, #0A1628 100%);
}

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

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
  filter: blur(2px);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 60px 16px;
  max-width: 720px;
}

.hero-content h1 {
  font-size: 2.2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}

.hero-content h1 em {
  font-style: normal;
  color: var(--color-gold);
}

.hero-content p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  max-width: 560px;
}

.btn-cta {
  display: inline-block;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  box-shadow: 0 4px 16px rgba(196,30,58,0.4);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(196,30,58,0.5);
  color: #fff;
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: #1A1A24;
  box-shadow: 0 4px 16px rgba(255,215,0,0.3);
}

.btn-gold:hover {
  box-shadow: 0 6px 24px rgba(255,215,0,0.4);
  color: #1A1A24;
}

/* ========== 面包屑 ========== */
.breadcrumb {
  padding: 14px 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.breadcrumb a { color: var(--color-gold); }
.breadcrumb span { margin: 0 6px; }

/* ========== 通用段落标题 ========== */
.section-block {
  padding: 48px 0;
}

.section-block:nth-child(even) {
  background: var(--color-bg-section);
}

.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 4px;
  height: 28px;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-gold) 100%);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  max-width: 680px;
}

/* ========== 视频卡片网格 ========== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.video-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary);
}

.video-card .thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.video-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.video-card:hover .thumb img {
  transform: scale(1.06);
}

.video-card .play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  background: rgba(196,30,58,0.85);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.video-card .play-icon::after {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}

.video-card:hover .play-icon {
  background: var(--color-primary-light);
  transform: translate(-50%, -50%) scale(1.1);
}

.video-card .card-body {
  padding: 14px 16px;
}

.video-card .card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card .card-meta {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: flex;
  gap: 12px;
  align-items: center;
}

.video-card .card-meta .tag {
  background: rgba(196,30,58,0.2);
  color: var(--color-primary-light);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
}

/* ========== 视频播放器 ========== */
.video-player-wrap {
  position: relative;
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/9;
  max-width: 800px;
  margin: 0 auto 24px;
}

.video-player-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-player-wrap .play-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.35);
  cursor: pointer;
  transition: var(--transition);
}

.video-player-wrap .play-overlay:hover {
  background: rgba(0,0,0,0.2);
}

.play-btn-large {
  width: 72px;
  height: 72px;
  background: rgba(196,30,58,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 24px rgba(196,30,58,0.5);
  transition: var(--transition);
}

.play-btn-large::after {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 14px 0 14px 24px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}

.play-btn-large:hover {
  transform: scale(1.1);
}

/* ========== 评论模块 ========== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-card);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-gold) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.review-info .name {
  font-weight: 600;
  color: #fff;
  font-size: 0.95rem;
}

.review-info .city {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.review-stars {
  color: var(--color-gold);
  font-size: 1rem;
  margin-bottom: 10px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 8px;
}

.review-date {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

/* ========== 注册模块 ========== */
.register-section {
  background: linear-gradient(135deg, #1A0A28 0%, var(--color-bg-dark) 100%);
}

.register-form {
  max-width: 480px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.95rem;
  font-family: var(--font-main);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(196,30,58,0.15);
}

/* ========== 上传模块 ========== */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
  text-align: center;
  background: var(--color-bg-card);
  transition: var(--transition);
  cursor: pointer;
}

.upload-zone:hover {
  border-color: var(--color-primary);
  background: rgba(196,30,58,0.05);
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.upload-zone h3 {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 8px;
}

.upload-zone p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ========== 授权徽章 ========== */
.badge-section {
  text-align: center;
}

.badge-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin-top: 24px;
}

.badge-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  width: 200px;
  text-align: center;
  transition: var(--transition);
}

.badge-item:hover {
  border-color: var(--color-gold);
  transform: translateY(-2px);
}

.badge-item .badge-icon {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.badge-item h4 {
  font-size: 0.9rem;
  color: #fff;
  margin-bottom: 6px;
}

.badge-item p {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

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

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--color-bg-card);
}

.faq-question {
  padding: 18px 20px;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

.faq-question:hover {
  background: rgba(196,30,58,0.1);
}

.faq-question::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--color-gold);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 12px;
}

.faq-item.open .faq-question::after {
  content: "−";
}

.faq-answer {
  display: none;
  padding: 0 20px 18px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ========== 新闻模块 ========== */
.news-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.news-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.news-item:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.news-item .news-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}

.news-item .news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-item .news-body {
  padding: 16px;
}

.news-item h3 {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 8px;
}

.news-item p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.news-item .news-date {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 10px;
}

/* ========== 客户支持 ========== */
.support-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

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

.support-card:hover {
  border-color: var(--color-primary);
}

.support-card .support-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.support-card h4 {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 8px;
}

.support-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ========== APP下载页面 ========== */
.app-hero {
  text-align: center;
  padding: 60px 16px;
  background: linear-gradient(145deg, #1A0A28 0%, var(--color-bg-dark) 50%, #0A1628 100%);
}

.app-hero h1 {
  font-size: 2rem;
  color: #fff;
  margin-bottom: 16px;
}

.app-hero p {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 32px;
}

.download-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  border: 2px solid var(--color-border);
  background: var(--color-bg-card);
  color: #fff;
}

.download-btn:hover {
  border-color: var(--color-primary);
  background: rgba(196,30,58,0.1);
  color: #fff;
}

.download-btn .dl-icon {
  font-size: 1.8rem;
}

.app-features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.app-feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
}

.app-feature-card .feat-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.app-feature-card h3 {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 8px;
}

.app-feature-card p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ========== 页脚 ========== */
.site-footer {
  background: linear-gradient(180deg, var(--color-bg-section) 0%, #08080C 100%);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 32px;
}

.footer-col h4 {
  font-size: 1rem;
  color: var(--color-gold);
  margin-bottom: 16px;
  font-weight: 600;
}

.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  padding: 4px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--color-gold);
  padding-left: 4px;
}

.footer-col p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.footer-bottom a {
  color: var(--color-text-muted);
  margin: 0 8px;
}

.footer-bottom a:hover { color: var(--color-gold); }

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

.social-links a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ========== 内页样式 ========== */
.page-header {
  padding: 40px 0 24px;
  background: linear-gradient(135deg, #1A0A28 0%, var(--color-bg-dark) 100%);
}

.page-header h1 {
  font-size: 1.8rem;
  color: #fff;
  margin-bottom: 8px;
}

.page-header p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.content-area {
  padding: 32px 0;
}

.content-area article {
  max-width: 860px;
}

.content-area h2 {
  font-size: 1.4rem;
  color: #fff;
  margin: 28px 0 12px;
  padding-left: 14px;
  border-left: 3px solid var(--color-primary);
}

.content-area h3 {
  font-size: 1.15rem;
  color: var(--color-gold);
  margin: 20px 0 10px;
}

.content-area p {
  margin-bottom: 16px;
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.85;
}

.content-area .inline-img {
  border-radius: var(--radius-md);
  margin: 20px 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.content-area .inline-img img {
  width: 100%;
  height: auto;
}

.content-area .img-caption {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  text-align: center;
  padding: 8px;
  background: var(--color-bg-card);
}

/* ========== 关于我们 ========== */
.about-section {
  padding: 48px 0;
}

.about-section .about-text {
  max-width: 860px;
}

.about-section .about-text p {
  font-size: 0.95rem;
  line-height: 1.85;
  margin-bottom: 16px;
}

/* ========== 响应式 ========== */
@media (max-width: 640px) {
  .hero-content h1 { font-size: 1.6rem; }
  .hero-content { padding: 40px 16px; }
  .section-title { font-size: 1.3rem; }
  .video-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .news-list { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .badge-grid { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  html { font-size: 15px; }
  .container { padding: 0 12px; }
  .hero-content h1 { font-size: 1.4rem; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* ========== 动画 ========== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
}

/* ========== 评分条 ========== */
.rating-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.rating-bar .bar-label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  width: 80px;
  flex-shrink: 0;
}

.rating-bar .bar-track {
  flex: 1;
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}

.rating-bar .bar-fill {
  height: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-gold) 100%);
}

.rating-bar .bar-value {
  font-size: 0.82rem;
  color: var(--color-gold);
  width: 36px;
  text-align: right;
}

/* ========== 标签云 ========== */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud a {
  padding: 6px 14px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  transition: var(--transition);
}

.tag-cloud a:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}