/* ============================================
   本音 BenYin 官网样式
   设计风格：深色音乐主题，藏青蓝→紫渐变
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a26;
  --bg-card-hover: #22222f;
  --text-primary: #ffffff;
  --text-secondary: #b0b0c0;
  --text-muted: #6a6a7a;
  --accent-start: #2d3a8c;
  --accent-mid: #5b3fa0;
  --accent-end: #7c3aed;
  --accent-glow: rgba(124, 58, 237, 0.3);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --max-width: 1200px;
  --nav-height: 72px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  opacity: 0.85;
}

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

ul, ol {
  list-style: none;
}

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

/* ---------- 通用容器 ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-end);
  margin-bottom: 16px;
}

.section-title {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

.text-center {
  text-align: center;
}

.text-center .section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* ---------- 渐变文字 ---------- */
.gradient-text {
  background: linear-gradient(135deg, #6b8aff 0%, #a78bfa 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-start) 0%, var(--accent-mid) 50%, var(--accent-end) 100%);
  color: #fff;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--accent-glow);
  opacity: 1;
}

.btn-outline {
  border: 1px solid var(--border-hover);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.btn-outline:hover {
  border-color: var(--accent-end);
  background: rgba(124, 58, 237, 0.1);
  opacity: 1;
}

.btn-lg {
  padding: 18px 40px;
  font-size: 17px;
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  border-bottom-color: var(--border-color);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.nav-links a:hover {
  color: var(--text-primary);
  opacity: 1;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-cta .btn {
  padding: 10px 22px;
  font-size: 14px;
}

/* ---------- Hero 区 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

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

.hero-bg::before {
  content: "";
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-bg::after {
  content: "";
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(45, 58, 140, 0.2) 0%, transparent 70%);
  border-radius: 50%;
}

/* 音频波形装饰 */
.hero-waves {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  opacity: 0.3;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-left {
  max-width: 620px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.3);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: #c4b5fd;
  margin-bottom: 28px;
}

.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #a78bfa;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: 64px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

.hero-slogan {
  font-size: 22px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-weight: 400;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-features {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  flex-wrap: wrap;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.hero-feature .check {
  color: #a78bfa;
  font-weight: 700;
}

/* Hero 右侧 - 手机模拟 */
.hero-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-mockup {
  position: relative;
  width: 300px;
  height: 600px;
  background: linear-gradient(145deg, #1e1e2e, #15151f);
  border-radius: 44px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 0 0 8px rgba(255, 255, 255, 0.02),
    0 40px 80px rgba(0, 0, 0, 0.5),
    0 0 100px rgba(124, 58, 237, 0.15);
  overflow: hidden;
}

.phone-notch {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 28px;
  background: #0a0a0f;
  border-radius: 0 0 18px 18px;
  z-index: 2;
}

.phone-screen {
  position: absolute;
  inset: 0;
  padding: 40px 20px 20px;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, rgba(45, 58, 140, 0.3) 0%, rgba(10, 10, 15, 1) 100%);
}

.phone-app-title {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #6b8aff, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.phone-search {
  height: 36px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-size: 12px;
  color: var(--text-muted);
}

.phone-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 10px;
}

.phone-card-lg {
  height: 72px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.phone-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.phone-card-text {
  flex: 1;
}

.phone-card-text .t1 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.phone-card-text .t2 {
  font-size: 11px;
  color: var(--text-muted);
}

.phone-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}

.phone-grid-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.phone-grid-item .icon {
  font-size: 18px;
}

.phone-grid-item .label {
  font-size: 12px;
  font-weight: 500;
}

.phone-song-list {
  flex: 1;
  overflow: hidden;
}

.phone-song-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.phone-song-cover {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: linear-gradient(135deg, #3b3b5c, #2a2a40);
  flex-shrink: 0;
}

.phone-song-info .n {
  font-size: 12px;
  font-weight: 500;
}

.phone-song-info .a {
  font-size: 10px;
  color: var(--text-muted);
}

.phone-mini-player {
  height: 48px;
  background: rgba(30, 30, 46, 0.95);
  border-radius: 12px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  margin-top: 8px;
  backdrop-filter: blur(10px);
}

.phone-mini-player .cover {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
}

.phone-mini-player .info {
  flex: 1;
  overflow: hidden;
}

.phone-mini-player .info .n {
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.phone-mini-player .info .a {
  font-size: 9px;
  color: var(--text-muted);
}

.phone-mini-player .play-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #fff;
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

/* ---------- 特性区 ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(45, 58, 140, 0.3), rgba(124, 58, 237, 0.3));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 24px;
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- 功能展示区 ---------- */
.showcase {
  background: var(--bg-secondary);
}

.showcase-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 100px;
}

.showcase-item:last-child {
  margin-bottom: 0;
}

.showcase-item.reverse .showcase-text {
  order: 2;
}

.showcase-item.reverse .showcase-visual {
  order: 1;
}

.showcase-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  color: #c4b5fd;
  margin-bottom: 20px;
}

.showcase-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}

.showcase-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.showcase-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.showcase-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-secondary);
}

.showcase-list li::before {
  content: "✓";
  color: #a78bfa;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* 功能视觉块 */
.showcase-visual {
  display: flex;
  justify-content: center;
}

.visual-box {
  width: 100%;
  max-width: 460px;
  aspect-ratio: 4 / 3;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.visual-box::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -30%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15), transparent 70%);
  border-radius: 50%;
}

/* 播放界面模拟 */
.visual-player {
  text-align: center;
  position: relative;
  z-index: 1;
}

.visual-cover {
  width: 140px;
  height: 140px;
  margin: 0 auto 24px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  box-shadow: 0 20px 60px rgba(124, 58, 237, 0.3);
}

.visual-song-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.visual-song-artist {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.visual-progress {
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  margin-bottom: 20px;
  overflow: hidden;
}

.visual-progress-bar {
  width: 45%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
  border-radius: 2px;
}

.visual-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
}

.visual-control-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-secondary);
}

.visual-control-btn.play {
  width: 56px;
  height: 56px;
  background: #fff;
  color: #000;
  font-size: 22px;
}

/* 歌单模拟 */
.visual-playlist {
  position: relative;
  z-index: 1;
}

.visual-playlist-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.visual-playlist-title {
  font-size: 18px;
  font-weight: 700;
}

.visual-playlist-count {
  font-size: 13px;
  color: var(--text-muted);
}

.visual-playlist-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px;
  border-radius: 10px;
  margin-bottom: 6px;
  transition: var(--transition);
}

.visual-playlist-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.visual-playlist-item.active {
  background: rgba(124, 58, 237, 0.12);
}

.visual-playlist-num {
  width: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.visual-playlist-cover {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  flex-shrink: 0;
}

.visual-playlist-info {
  flex: 1;
  min-width: 0;
}

.visual-playlist-name {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.visual-playlist-artist {
  font-size: 12px;
  color: var(--text-muted);
}

.visual-playlist-duration {
  font-size: 12px;
  color: var(--text-muted);
}

/* 局域网导入模拟 */
.visual-lan {
  position: relative;
  z-index: 1;
  text-align: center;
}

.visual-lan-devices {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-bottom: 32px;
}

.visual-lan-device {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.visual-lan-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(45, 58, 140, 0.4), rgba(124, 58, 237, 0.4));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}

.visual-lan-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.visual-lan-arrow {
  font-size: 24px;
  color: var(--accent-end);
  animation: arrowMove 1.5s infinite;
}

@keyframes arrowMove {
  0%, 100% { transform: translateX(0); opacity: 0.5; }
  50% { transform: translateX(6px); opacity: 1; }
}

.visual-lan-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 100px;
  font-size: 14px;
  color: #6ee7b7;
  font-weight: 500;
}

/* ---------- 定价区 ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 860px;
  margin: 60px auto 0;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 44px 36px;
  transition: var(--transition);
  position: relative;
}

.pricing-card.featured {
  border-color: rgba(124, 58, 237, 0.4);
  background: linear-gradient(180deg, rgba(124, 58, 237, 0.08) 0%, var(--bg-card) 100%);
}

.pricing-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 18px;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.pricing-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.pricing-price {
  margin-bottom: 28px;
}

.pricing-price .amount {
  font-size: 48px;
  font-weight: 900;
}

.pricing-price .unit {
  font-size: 16px;
  color: var(--text-muted);
  margin-left: 4px;
}

.pricing-price .original {
  font-size: 16px;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-left: 8px;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-secondary);
}

.pricing-features li::before {
  content: "✓";
  color: #a78bfa;
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-note {
  text-align: center;
  margin-top: 40px;
  font-size: 14px;
  color: var(--text-muted);
}

/* ---------- 下载区 ---------- */
.download-section {
  background: var(--bg-secondary);
}

.download-box {
  max-width: 720px;
  margin: 60px auto 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download-box::before {
  content: "";
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.15), transparent 70%);
  border-radius: 50%;
}

.download-platforms {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin: 40px 0;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}

.download-platform {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 28px 36px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  min-width: 160px;
}

.download-platform:hover {
  border-color: rgba(124, 58, 237, 0.4);
  background: rgba(124, 58, 237, 0.06);
}

.download-platform .icon {
  font-size: 40px;
}

.download-platform .name {
  font-size: 16px;
  font-weight: 600;
}

.download-platform .status {
  font-size: 12px;
  color: var(--text-muted);
}

.download-platform .status.coming {
  color: #fbbf24;
}

.download-platform .status.available {
  color: #6ee7b7;
}

.download-note {
  font-size: 14px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
  line-height: 1.8;
}

/* ---------- 页脚 ---------- */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 16px;
}

.footer-brand .slogan {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.7;
}

.footer-brand .copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom-left {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-bottom-left a {
  color: var(--text-muted);
}

.footer-bottom-left a:hover {
  color: var(--text-secondary);
}

.footer-bottom-right {
  font-size: 13px;
  color: var(--text-muted);
}

.icp-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ---------- 法律页面通用样式 ---------- */
.legal-page {
  padding-top: calc(var(--nav-height) + 60px);
  padding-bottom: 80px;
  min-height: 100vh;
}

.legal-header {
  margin-bottom: 48px;
}

.legal-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}

.legal-meta {
  font-size: 14px;
  color: var(--text-muted);
}

.legal-content {
  max-width: 820px;
}

.legal-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}

.legal-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 12px;
}

.legal-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 16px;
}

.legal-content ul, .legal-content ol {
  margin: 12px 0 20px 24px;
}

.legal-content ul li, .legal-content ol li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 8px;
  list-style: disc;
}

.legal-content ol li {
  list-style: decimal;
}

.legal-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

.legal-content .highlight {
  background: rgba(124, 58, 237, 0.08);
  border-left: 3px solid var(--accent-end);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 20px 0;
}

.legal-content .highlight p {
  margin-bottom: 0;
}

/* ---------- 关于页面 ---------- */
.about-hero {
  padding-top: calc(var(--nav-height) + 80px);
  padding-bottom: 60px;
  text-align: center;
}

.about-hero h1 {
  font-size: 48px;
  font-weight: 900;
  margin-bottom: 20px;
}

.about-hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

.about-section {
  padding: 60px 0;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 24px;
}

.about-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.about-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
}

.about-card p:last-child {
  margin-bottom: 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.contact-item .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(45, 58, 140, 0.3), rgba(124, 58, 237, 0.3));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-item .label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.contact-item .value {
  font-size: 15px;
  font-weight: 500;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-left {
    max-width: 100%;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-features {
    justify-content: center;
  }

  .hero-right {
    display: none;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .showcase-item,
  .showcase-item.reverse {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .showcase-item.reverse .showcase-text {
    order: 1;
  }

  .showcase-item.reverse .showcase-visual {
    order: 2;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 30px;
  }

  .hero-title {
    font-size: 42px;
  }

  .hero-slogan {
    font-size: 18px;
  }

  .nav-links {
    display: none;
  }

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

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

  .download-box {
    padding: 40px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

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

  .legal-title {
    font-size: 28px;
  }

  .about-hero h1 {
    font-size: 36px;
  }
}