/* 91视频 - 官方网站样式 */
/* 黑白视觉系统 */

:root {
  --bg-main: #000000;
  --bg-deep: #0A0A0A;
  --bg-content: #111111;
  --bg-secondary: #1A1A1A;
  --bg-hover: #222222;
  --text-title: #FFFFFF;
  --text-body: #E8E8E8;
  --text-secondary: #B0B0B0;
  --text-assist: #777777;
  --text-light: #CCCCCC;
  --text-mid: #888888;
  --text-dark: #444444;
  --border: rgba(255,255,255,0.12);
  --border-strong: rgba(255,255,255,0.35);
  --shadow: 0 16px 48px rgba(0,0,0,0.7);
  --glow: 0 12px 36px rgba(255,255,255,0.08);
  --btn-bg: #FFFFFF;
  --btn-text: #000000;
  --footer-bg: #000000;
  --footer-text: #AAAAAA;
  --nav-height: 72px;
  --max-width: 1280px;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-main);
  color: var(--text-body);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--text-title);
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

a:hover {
  color: var(--text-light);
}

a:focus-visible {
  outline: 2px solid #FFFFFF;
  outline-offset: 3px;
}

ul, ol {
  list-style: none;
}

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

/* ========== 顶部导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
  min-width: 0;
}

.logo-link {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  height: 40px;
}

.logo-link img {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
}

.desktop-nav a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  padding: 8px 12px;
  border-radius: 20px;
  white-space: nowrap;
  position: relative;
}

.desktop-nav a:hover {
  color: #FFFFFF;
  background: var(--bg-hover);
}

.desktop-nav a.active {
  color: #FFFFFF;
  background: rgba(255,255,255,0.1);
}

.desktop-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: #FFFFFF;
  border-radius: 1px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 16px;
  border-radius: 22px;
  font-size: 0.9rem;
  color: var(--text-body);
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  background: var(--bg-hover);
  color: #FFFFFF;
}

.nav-btn-search {
  border: 1px solid var(--border);
}

.nav-btn-playlist {
  border: 1px solid var(--border-strong);
}

.nav-btn-app {
  background: #FFFFFF;
  color: #000000;
  font-weight: 600;
  border: none;
}

.nav-btn-app:hover {
  background: #E8E8E8;
  color: #000000;
}

.menu-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 1.4rem;
}

.mobile-logo {
  display: none;
}

/* ========== 频道面板 ========== */
.channel-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.channel-overlay.open {
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
}

.channel-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 460px;
  max-width: 88%;
  height: 100%;
  background: var(--bg-deep);
  z-index: 2001;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  visibility: hidden;
  pointer-events: none;
  border-left: 1px solid var(--border);
}

.channel-panel.open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
}

.channel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.channel-header .logo-link {
  gap: 10px;
}

.channel-close {
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-secondary);
  border-radius: 50%;
}

.channel-close:hover {
  background: var(--bg-hover);
  color: #FFFFFF;
}

.channel-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px 40px;
  -webkit-overflow-scrolling: touch;
}

.channel-group {
  margin-bottom: 28px;
}

.channel-group-title {
  font-size: 0.78rem;
  color: var(--text-assist);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  padding-left: 4px;
}

.channel-item {
  display: block;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 4px;
  transition: background 0.2s;
}

.channel-item:hover {
  background: var(--bg-hover);
}

.channel-item-name {
  font-size: 0.98rem;
  color: #FFFFFF;
  font-weight: 500;
  margin-bottom: 3px;
}

.channel-item-desc {
  font-size: 0.82rem;
  color: var(--text-assist);
  line-height: 1.45;
}

/* ========== 搜索面板 ========== */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 2100;
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.search-overlay.open {
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
}

.search-panel {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--bg-deep);
  z-index: 2101;
  padding: 24px 20px 40px;
  transform: translateY(-20px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.25s ease;
  border-bottom: 1px solid var(--border);
  max-height: 90vh;
  overflow-y: auto;
}

.search-panel.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.search-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.search-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.search-input-wrap {
  flex: 1;
  position: relative;
}

.search-input {
  width: 100%;
  padding: 14px 20px;
  background: var(--bg-content);
  border: 1px solid var(--border-strong);
  border-radius: 28px;
  color: #FFFFFF;
  font-size: 1rem;
  outline: none;
}

.search-input::placeholder {
  color: var(--text-assist);
}

.search-input:focus {
  border-color: #FFFFFF;
}

.search-close {
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--text-secondary);
  border-radius: 50%;
}

.search-close:hover {
  background: var(--bg-hover);
  color: #FFFFFF;
}

.search-section {
  margin-bottom: 28px;
}

.search-section-title {
  font-size: 0.85rem;
  color: var(--text-assist);
  margin-bottom: 12px;
}

.search-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.search-tag {
  padding: 8px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.9rem;
  color: var(--text-body);
}

.search-tag:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
  color: #FFFFFF;
}

.search-results {
  display: none;
  margin-top: 16px;
}

.search-results.show {
  display: block;
}

.search-result-item {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-body);
}

.search-result-item:hover {
  color: #FFFFFF;
}

/* ========== 主内容区 ========== */
main {
  min-height: 60vh;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 56px 0;
}

.section-title {
  font-size: 1.65rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 640px;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
  flex-wrap: wrap;
}

.section-more {
  font-size: 0.9rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 20px;
}

.section-more:hover {
  color: #FFFFFF;
  border-color: var(--border-strong);
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s ease;
  white-space: nowrap;
  text-align: center;
}

.btn-primary {
  background: var(--btn-bg);
  color: var(--btn-text);
}

.btn-primary:hover {
  background: #E0E0E0;
  color: #000000;
}

.btn-secondary {
  background: transparent;
  color: #FFFFFF;
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: #FFFFFF;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ========== 卡片通用 ========== */
.card {
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s, background 0.2s;
}

.card:hover {
  border-color: var(--border-strong);
  background: var(--bg-secondary);
}

.card-body {
  padding: 20px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.card-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.card-meta {
  font-size: 0.8rem;
  color: var(--text-assist);
  margin-top: 10px;
}

/* ========== 首页首屏 ========== */
.hero {
  padding: 40px 0 48px;
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.65fr 1fr;
  gap: 36px;
  align-items: stretch;
}

.hero-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-content);
  border: 1px solid var(--border);
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-visual-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #1A1A1A 0%, #0A0A0A 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
}

.hero-visual-placeholder span {
  font-size: 2rem;
  font-weight: 700;
  color: rgba(255,255,255,0.15);
  letter-spacing: 0.1em;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-brand {
  font-size: 0.85rem;
  color: var(--text-assist);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero-title {
  font-size: 2rem;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 24px;
}

.hero-recos {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-reco {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
}

.hero-reco-num {
  font-size: 0.85rem;
  color: var(--text-assist);
  font-weight: 600;
  min-width: 24px;
}

.hero-reco-text {
  font-size: 0.92rem;
  color: var(--text-body);
}

.hero-reco-text a {
  color: var(--text-body);
}

.hero-reco-text a:hover {
  color: #FFFFFF;
}

/* ========== 频道快捷条 ========== */
.quick-bar {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-deep);
}

.quick-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.quick-scroll::-webkit-scrollbar {
  display: none;
}

.quick-item {
  flex-shrink: 0;
  padding: 8px 16px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 20px;
  white-space: nowrap;
  background: var(--bg-content);
}

.quick-item:hover,
.quick-item.active {
  color: #FFFFFF;
  border-color: var(--border-strong);
  background: var(--bg-hover);
}

/* ========== 今日灵感 ========== */
.inspire-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.inspire-item {
  padding: 18px 16px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, background 0.2s;
}

.inspire-item:hover {
  border-color: var(--border-strong);
  background: var(--bg-secondary);
}

.inspire-name {
  font-size: 0.98rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.inspire-desc {
  font-size: 0.82rem;
  color: var(--text-assist);
  line-height: 1.5;
}

/* ========== 热点趋势 ========== */
.trend-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
}

.trend-feature {
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.trend-feature-type {
  font-size: 0.8rem;
  color: var(--text-assist);
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.trend-feature-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 14px;
  line-height: 1.35;
}

.trend-feature-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 16px;
}

.trend-feature-reason {
  font-size: 0.88rem;
  color: var(--text-light);
  padding: 12px 14px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.trend-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.trend-side-item {
  display: block;
  padding: 16px 18px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.trend-side-item:hover {
  border-color: var(--border-strong);
  background: var(--bg-secondary);
}

.trend-side-type {
  font-size: 0.75rem;
  color: var(--text-assist);
  margin-bottom: 4px;
}

.trend-side-title {
  font-size: 1rem;
  color: #FFFFFF;
  font-weight: 500;
}

/* ========== 明星观察横向 ========== */
.celeb-track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--text-dark) transparent;
}

.celeb-card {
  flex: 0 0 220px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.celeb-card:hover {
  border-color: var(--border-strong);
}

.celeb-label {
  font-size: 0.78rem;
  color: var(--text-assist);
  margin-bottom: 8px;
}

.celeb-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.celeb-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ========== 电影精选 ========== */
.film-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
}

.film-main {
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.film-main-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 14px;
}

.film-main-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
}

.film-types {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.film-type-item {
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.film-type-item:hover {
  border-color: var(--border-strong);
  background: var(--bg-hover);
}

.film-type-name {
  font-size: 0.95rem;
  color: #FFFFFF;
  font-weight: 500;
  margin-bottom: 4px;
}

.film-type-desc {
  font-size: 0.8rem;
  color: var(--text-assist);
}

/* ========== 短片推荐 ========== */
.clip-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.clip-item {
  display: flex;
  gap: 14px;
  padding: 18px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.clip-item:hover {
  border-color: var(--border-strong);
}

.clip-num {
  font-size: 1.4rem;
  font-weight: 700;
  color: rgba(255,255,255,0.2);
  line-height: 1;
  min-width: 36px;
}

.clip-info h3 {
  font-size: 1rem;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.clip-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ========== 剧集观察 ========== */
.series-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.series-card {
  padding: 22px;
  background: var(--bg-content);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
}

.series-card:hover {
  background: var(--bg-secondary);
}

.series-card h3 {
  font-size: 1.05rem;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.series-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== 幕后纪录 ========== */
.making-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.making-item {
  padding: 24px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.making-item:nth-child(odd) {
  transform: translateY(12px);
}

.making-item h3 {
  font-size: 1.1rem;
  color: #FFFFFF;
  margin-bottom: 10px;
}

.making-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ========== 片单 ========== */
.playlist-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.playlist-card {
  padding: 22px 18px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: left;
}

.playlist-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-secondary);
}

.playlist-card h3 {
  font-size: 1rem;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.playlist-card p {
  font-size: 0.84rem;
  color: var(--text-assist);
  line-height: 1.5;
}

/* ========== 榜单 ========== */
.chart-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chart-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 18px 20px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.chart-item:hover {
  border-color: var(--border-strong);
}

.chart-num {
  font-size: 1.6rem;
  font-weight: 700;
  color: rgba(255,255,255,0.25);
  min-width: 40px;
  line-height: 1;
}

.chart-info h3 {
  font-size: 1.05rem;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.chart-info p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ========== 上线计划时间轨道 ========== */
.schedule-track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.schedule-item {
  flex: 0 0 240px;
  padding: 20px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.schedule-status {
  display: inline-block;
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: var(--bg-secondary);
  color: var(--text-light);
  margin-bottom: 10px;
  border: 1px solid var(--border);
}

.schedule-item h3 {
  font-size: 1rem;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.schedule-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ========== 编辑观点 ========== */
.opinion-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.opinion-card {
  padding: 22px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.opinion-card:hover {
  border-color: var(--border-strong);
}

.opinion-tag {
  font-size: 0.75rem;
  color: var(--text-assist);
  margin-bottom: 8px;
}

.opinion-card h3 {
  font-size: 1.05rem;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.opinion-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== 探索发现 ========== */
.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.explore-item {
  padding: 20px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.explore-item:hover {
  border-color: var(--border-strong);
}

.explore-item h3 {
  font-size: 1rem;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.explore-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ========== APP区域 ========== */
.app-section {
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.app-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
}

.app-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-content);
  border: 1px solid var(--border);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.app-visual-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, #1A1A1A, #0A0A0A);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: rgba(255,255,255,0.12);
  font-weight: 700;
}

.app-content h2 {
  font-size: 1.6rem;
  color: #FFFFFF;
  margin-bottom: 14px;
}

.app-content p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
}

/* ========== 版权与分级 ========== */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.two-col-item {
  padding: 28px;
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.two-col-item h3 {
  font-size: 1.2rem;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.two-col-item p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ========== FAQ ========== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--bg-content);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  cursor: pointer;
  font-size: 0.98rem;
  color: #FFFFFF;
  font-weight: 500;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.2rem;
  color: var(--text-assist);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item .faq-answer {
  padding: 0 20px 18px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== 品牌宣言 ========== */
.brand-manifesto {
  padding: 48px 0;
  text-align: center;
  border-top: 1px solid var(--border);
}

.brand-manifesto h2 {
  font-size: 1.5rem;
  color: #FFFFFF;
  margin-bottom: 18px;
}

.brand-manifesto p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 780px;
  margin: 0 auto;
}

/* ========== 内页通用 ========== */
.page-hero {
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
  line-height: 1.3;
}

.page-hero-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.7;
}

.page-content {
  padding: 40px 0 60px;
}

.content-block {
  margin-bottom: 40px;
}

.content-block h2 {
  font-size: 1.35rem;
  color: #FFFFFF;
  margin-bottom: 14px;
  font-weight: 600;
}

.content-block h3 {
  font-size: 1.15rem;
  color: #FFFFFF;
  margin-bottom: 10px;
  margin-top: 24px;
}

.content-block p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
}

.content-block ul {
  margin: 12px 0 16px 20px;
}

.content-block ul li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 6px;
  list-style: disc;
}

.content-block a {
  color: var(--text-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.content-block a:hover {
  color: #FFFFFF;
}

.img-block {
  margin: 24px 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-content);
}

.img-block img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.img-placeholder {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #1A1A1A, #0A0A0A);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.12);
  font-size: 1.2rem;
  font-weight: 600;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border);
  padding: 48px 0 100px;
  color: var(--footer-text);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.footer-brand .logo-text {
  font-size: 1.2rem;
}

.footer-brand-en {
  font-size: 0.8rem;
  color: var(--text-assist);
  letter-spacing: 0.1em;
  margin-left: 8px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: var(--text-assist);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.6;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.footer-col-title {
  font-size: 0.85rem;
  color: #FFFFFF;
  margin-bottom: 14px;
  font-weight: 600;
}

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

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-note {
  font-size: 0.82rem;
  color: var(--text-assist);
  line-height: 1.65;
  max-width: 800px;
  margin-bottom: 20px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dark);
}

/* ========== 手机底部导航 ========== */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: rgba(0,0,0,0.95);
  border-top: 1px solid var(--border);
  padding: 0 0 env(safe-area-inset-bottom);
  height: calc(56px + env(safe-area-inset-bottom));
}

.mobile-bottom-inner {
  display: flex;
  height: 56px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.mobile-bottom-inner a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 0.72rem;
  color: var(--text-assist);
  min-height: 48px;
}

.mobile-bottom-inner a.active {
  color: #FFFFFF;
}

.mobile-bottom-inner a span.icon {
  font-size: 1.15rem;
  line-height: 1;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .trend-main {
    grid-template-columns: 1fr;
  }
  .film-layout {
    grid-template-columns: 1fr;
  }
  .making-item:nth-child(odd) {
    transform: none;
  }
  .inspire-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clip-list {
    grid-template-columns: 1fr 1fr;
  }
  .series-grid {
    grid-template-columns: 1fr 1fr;
  }
  .playlist-grid {
    grid-template-columns: 1fr 1fr;
  }
  .opinion-list {
    grid-template-columns: 1fr;
  }
  .explore-grid {
    grid-template-columns: 1fr 1fr;
  }
  .app-layout {
    grid-template-columns: 1fr;
  }
  .two-col {
    grid-template-columns: 1fr;
  }
  .footer-cols {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
  }

  .desktop-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-left .logo-link {
    display: none;
  }

  .mobile-logo {
    display: flex;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }

  .nav-inner {
    position: relative;
    justify-content: space-between;
  }

  .nav-right .nav-btn-search,
  .nav-right .nav-btn-playlist {
    display: none;
  }

  .nav-btn-app {
    padding: 8px 14px;
    font-size: 0.85rem;
  }

  .hero-title {
    font-size: 1.55rem;
  }

  .section {
    padding: 40px 0;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .page-hero h1 {
    font-size: 1.6rem;
  }

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

  .clip-list {
    grid-template-columns: 1fr;
  }

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

  .making-layout {
    grid-template-columns: 1fr;
  }

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

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

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .mobile-bottom-nav {
    display: block;
  }

  .site-footer {
    padding-bottom: 120px;
  }

  .container {
    padding: 0 16px;
  }

  .channel-panel {
    width: 88%;
  }

  .search-panel {
    top: 0;
    bottom: 0;
    max-height: 100%;
    border-radius: 0;
  }
}

@media (max-width: 480px) {
  .inspire-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 1.4rem;
  }
  .btn-group {
    flex-direction: column;
  }
  .btn {
    width: 100%;
  }
}

/* 防止横向滚动 */
body, html {
  max-width: 100vw;
  overflow-x: hidden;
}

img, video, iframe {
  max-width: 100%;
}