/**
 * xxyun 音乐录音室主题系统样式 (Light Music Studio Design System)
 * 配色体系:
 *   背景: #FAF4FA
 *   浅丁香: #E1CAE6
 *   淡玫瑰: #EFCBD8
 *   淡蓝: #CEDFF0
 *   奶油黄: #F5E6BC
 *   正文: #514657
 * 字体规范:
 *   标题: "Microsoft YaHei", "PingFang SC", sans-serif (粗体)
 *   拉丁文字: Verdana, sans-serif
 *   正文: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif
 */

:root {
  --bg-studio: #FAF4FA;
  --bg-surface: #FFFFFF;
  --bg-card: rgba(255, 255, 255, 0.88);
  --color-lilac: #E1CAE6;
  --color-lilac-dark: #C9A7D1;
  --color-rose: #EFCBD8;
  --color-rose-dark: #DEA4B8;
  --color-blue: #CEDFF0;
  --color-blue-dark: #A9CAE8;
  --color-cream: #F5E6BC;
  --color-cream-dark: #E4CE93;
  --color-text: #514657;
  --color-text-light: #7E7085;
  --color-text-subtle: #9F93A5;
  --border-soft: rgba(142, 118, 153, 0.18);
  --border-strong: rgba(142, 118, 153, 0.35);
  --shadow-sleeve: 0 14px 34px -10px rgba(81, 70, 87, 0.12), 0 4px 12px rgba(81, 70, 87, 0.06);
  --shadow-knob: inset 0 2px 4px rgba(255, 255, 255, 0.9), 0 4px 8px rgba(81, 70, 87, 0.15);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --font-heading: "Microsoft YaHei", "PingFang SC", "Heiti SC", sans-serif;
  --font-latin: Verdana, Geneva, Tahoma, sans-serif;
  --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-max: 1240px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-studio);
  color: var(--color-text);
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--bg-studio);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(225, 202, 230, 0.22) 0%, transparent 40%),
    radial-gradient(circle at 90% 60%, rgba(206, 223, 240, 0.25) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(245, 230, 188, 0.2) 0%, transparent 50%);
  background-attachment: fixed;
}

/* 字体分类 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.latin-text, [lang="en"], .font-latin {
  font-family: var(--font-latin);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease;
}

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

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

/* 容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 细唱片纹理 (Vinyl Micro-Grooves) */
.vinyl-grooves-bg {
  background-image: repeating-radial-gradient(
    circle at center,
    rgba(81, 70, 87, 0.02) 0,
    rgba(81, 70, 87, 0.02) 2px,
    transparent 2px,
    transparent 4px
  );
}

.vinyl-disc {
  position: relative;
  border-radius: 50%;
  background: radial-gradient(circle at center, 
    #FAF4FA 0%, #FAF4FA 16%, 
    #514657 16.5%, #3d3442 20%, 
    #4a3f50 20.5%, #423847 38%, 
    #4e4354 38.5%, #3e3543 55%, 
    #4a3f50 55.5%, #3c3341 72%, 
    #4e4354 72.5%, #38303d 88%,
    #2f2834 100%
  );
  box-shadow: 0 10px 24px rgba(81, 70, 87, 0.22), inset 0 0 0 1px rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.vinyl-disc::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: repeating-radial-gradient(
    circle at center,
    transparent 0,
    transparent 2px,
    rgba(255, 255, 255, 0.05) 2.5px,
    transparent 3px
  );
  pointer-events: none;
}

.vinyl-center-label {
  width: 36%;
  height: 36%;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-rose) 0%, var(--color-lilac) 100%);
  border: 3px solid #FAF4FA;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
  position: relative;
  z-index: 2;
}

.vinyl-center-hole {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #FAF4FA;
  border: 2px solid rgba(81, 70, 87, 0.3);
}

/* 纸质专辑封套质感 (Paper Album Sleeve) */
.paper-sleeve {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sleeve);
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.paper-sleeve::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-lilac), var(--color-rose));
  opacity: 0.8;
}

.paper-sleeve:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px -10px rgba(81, 70, 87, 0.18);
  border-color: var(--border-strong);
}

/* 圆形旋钮 (Studio Potentiometer Knob) */
.studio-knob {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #FFFFFF 0%, #EDE4F0 60%, #D8C8DE 100%);
  border: 2px solid rgba(142, 118, 153, 0.28);
  box-shadow: var(--shadow-knob);
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

.studio-knob::after {
  content: "";
  position: absolute;
  top: 5px;
  width: 3px;
  height: 10px;
  background-color: var(--color-text);
  border-radius: 2px;
  transform-origin: center 19px;
  transform: rotate(var(--knob-angle, 0deg));
}

.knob-label {
  font-size: 11px;
  font-family: var(--font-latin);
  text-transform: uppercase;
  color: var(--color-text-light);
  letter-spacing: 0.5px;
  margin-top: 4px;
}

/* 波形分隔线 (Waveform Divider) */
.waveform-divider {
  width: 100%;
  overflow: hidden;
  line-height: 0;
  margin: 40px 0;
}

.waveform-divider svg {
  position: relative;
  display: block;
  width: 100%;
  height: 28px;
  stroke: var(--color-lilac);
  stroke-width: 1.5;
  fill: none;
  opacity: 0.75;
}

/* 按钮规范 */
.btn-studio {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-weight: 700;
  font-size: 15px;
  border-radius: var(--radius-full);
  transition: all 0.22s ease;
  position: relative;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-rose) 0%, var(--color-lilac) 100%);
  color: var(--color-text);
  box-shadow: 0 4px 14px rgba(225, 202, 230, 0.6);
  border: 1px solid rgba(222, 164, 184, 0.5);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(225, 202, 230, 0.85);
  background: linear-gradient(135deg, var(--color-rose-dark) 0%, var(--color-lilac-dark) 100%);
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--color-text);
  border: 1px solid var(--border-strong);
  box-shadow: 0 2px 8px rgba(81, 70, 87, 0.05);
}

.btn-secondary:hover {
  background: var(--bg-studio);
  border-color: var(--color-lilac-dark);
  transform: translateY(-1px);
}

.btn-cream {
  background: linear-gradient(135deg, var(--color-cream) 0%, #FFF3D6 100%);
  color: var(--color-text);
  border: 1px solid var(--color-cream-dark);
  box-shadow: 0 4px 12px rgba(245, 230, 188, 0.6);
}

.btn-cream:hover {
  background: linear-gradient(135deg, var(--color-cream-dark) 0%, var(--color-cream) 100%);
  transform: translateY(-2px);
}

/* 顶部导航栏 (Header) */
.studio-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 244, 250, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  padding: 14px 0;
  transition: all 0.3s ease;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-disc-mini {
  width: 38px;
  height: 38px;
  animation: discIdleSpin 18s linear infinite;
  animation-play-state: paused;
}

.brand-logo-wrap:hover .logo-disc-mini {
  animation-play-state: running;
}

@keyframes discIdleSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.brand-title-box {
  display: flex;
  flex-direction: column;
}

.brand-title-box .brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--color-text);
  line-height: 1.1;
}

.brand-title-box .brand-tagline {
  font-size: 11px;
  color: var(--color-text-light);
  letter-spacing: 1px;
}

/* 居中导航 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-light);
  position: relative;
  padding: 6px 2px;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-lilac), var(--color-rose));
  border-radius: 2px;
  transition: all 0.25s ease;
  transform: translateX(-50%);
}

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

.nav-link:hover::after {
  width: 100%;
}

.header-action {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 移动端菜单按钮 */
.mobile-nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  border: 1px solid var(--border-soft);
}

.mobile-nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  transition: 0.3s;
}

/* 核心首屏布局 (Hero Section) */
.hero-section {
  padding: 40px 0 60px 0;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: stretch;
}

/* 左侧超大专辑封面式品牌介绍 */
.hero-album-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sleeve);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.album-vinyl-peek {
  position: absolute;
  right: -70px;
  top: -40px;
  width: 260px;
  height: 260px;
  opacity: 0.28;
  pointer-events: none;
  animation: discSlowRotate 30s linear infinite;
}

@keyframes discSlowRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.album-badge-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: linear-gradient(135deg, rgba(225, 202, 230, 0.4) 0%, rgba(206, 223, 240, 0.4) 100%);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 24px;
  width: fit-content;
}

.hero-album-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  color: var(--color-text);
}

.hero-album-title span.accent-highlight {
  background: linear-gradient(120deg, var(--color-lilac) 0%, var(--color-rose) 100%);
  padding: 2px 8px;
  border-radius: 6px;
}

.hero-album-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-light);
  margin-bottom: 30px;
}

.album-track-meta {
  background: rgba(250, 244, 250, 0.7);
  border: 1px dashed var(--border-soft);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.meta-item {
  display: flex;
  flex-direction: column;
}

.meta-label {
  font-size: 12px;
  font-family: var(--font-latin);
  color: var(--color-text-subtle);
  text-transform: uppercase;
}

.meta-val {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
}

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

.hero-disclaimer-note {
  font-size: 12px;
  color: var(--color-text-subtle);
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 产品优势：三条横向音轨式内容区 */
.advantages-section {
  padding: 40px 0 70px 0;
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px auto;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-latin);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-text-light);
  background: rgba(225, 202, 230, 0.35);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* 三条横向音轨 */
.audio-track-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.audio-track-lane {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 24px 30px;
  box-shadow: var(--shadow-sleeve);
  display: grid;
  grid-template-columns: 140px 1fr 200px;
  align-items: center;
  gap: 28px;
  position: relative;
  overflow: hidden;
  transition: all 0.25s ease;
}

.audio-track-lane:hover {
  border-color: var(--border-strong);
  transform: translateX(4px);
}

.track-lane-sidebar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-right: 1px dashed var(--border-soft);
  padding-right: 18px;
}

.track-number {
  font-family: var(--font-latin);
  font-size: 14px;
  font-weight: 800;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 6px;
}

.track-badges {
  display: flex;
  gap: 6px;
}

.badge-mute-solo {
  font-family: var(--font-latin);
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(81, 70, 87, 0.08);
  color: var(--color-text-light);
}

.badge-mute-solo.active {
  background: var(--color-rose);
  color: var(--color-text);
}

.track-lane-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.track-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
}

.track-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.track-waveform-visual {
  height: 48px;
  background: repeating-linear-gradient(90deg, 
    var(--color-lilac) 0px, var(--color-lilac) 4px,
    transparent 4px, transparent 8px
  );
  opacity: 0.45;
  border-radius: 6px;
  position: relative;
}

.track-meters-col {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
}

.vu-meter-bar {
  width: 14px;
  height: 60px;
  background: rgba(81, 70, 87, 0.08);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}

.vu-meter-fill {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 82%;
  background: linear-gradient(to top, var(--color-blue), var(--color-lilac) 70%, var(--color-rose) 90%);
  border-radius: 3px;
}

/* 节点网络：城市节目单 (City Program Playlist) */
.nodes-section {
  padding: 40px 0 70px 0;
}

.program-schedule-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.schedule-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sleeve);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.schedule-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-soft);
  padding-bottom: 12px;
}

.session-badge {
  font-family: var(--font-latin);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-light);
  background: var(--color-blue);
  padding: 2px 8px;
  border-radius: 4px;
}

.node-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  color: #2F7C48;
}

.node-status-badge.pending {
  color: #B47317;
}

.node-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: currentColor;
}

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

.schedule-cities {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 18px;
  line-height: 1.5;
}

.schedule-meta-list {
  list-style: none;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
  background: rgba(250, 244, 250, 0.6);
  padding: 12px;
  border-radius: var(--radius-sm);
}

.schedule-meta-list li {
  display: flex;
  justify-content: space-between;
}

.schedule-meta-list span.val {
  font-family: var(--font-latin);
  font-weight: 600;
  color: var(--color-text);
}

/* AI 与流媒体：工作室双页说明 (Dual-Page Booklet) */
.booklet-section {
  padding: 40px 0 70px 0;
}

.booklet-spread {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sleeve);
  position: relative;
  overflow: hidden;
}

/* 中缝装订线 */
.booklet-spread::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--border-strong) 20%, var(--border-strong) 80%, transparent);
  box-shadow: -2px 0 6px rgba(81, 70, 87, 0.08), 2px 0 6px rgba(81, 70, 87, 0.08);
}

.booklet-page {
  padding: 46px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.booklet-page.page-left {
  border-right: 1px solid var(--border-soft);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(206, 223, 240, 0.15) 100%);
}

.booklet-page.page-right {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(239, 203, 216, 0.15) 100%);
}

.page-folio {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-latin);
  font-size: 11px;
  color: var(--color-text-subtle);
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.page-header h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--color-text);
}

.page-lead {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 24px;
}

.service-capsules {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.service-capsule {
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--border-soft);
  color: var(--color-text);
}

.spec-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.spec-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14px;
  color: var(--color-text);
}

.spec-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-lilac-dark);
}

/* 五档套餐：五行混音台通道 (5-Row Mixer Channel Strips) */
.pricing-section {
  padding: 40px 0 80px 0;
}

.mixer-console {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 16px 40px rgba(81, 70, 87, 0.08);
}

.mixer-header-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  border-bottom: 2px dashed var(--border-soft);
  margin-bottom: 24px;
}

.mixer-title {
  font-size: 20px;
  font-weight: 800;
}

.mixer-channels-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 单条混音通道 (Mixer Strip) */
.mixer-channel-strip {
  display: grid;
  grid-template-columns: 160px 1fr 140px 140px 150px;
  align-items: center;
  gap: 20px;
  padding: 18px 24px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  background: rgba(250, 244, 250, 0.5);
  transition: all 0.25s ease;
  position: relative;
}

.mixer-channel-strip:hover {
  background: #FFFFFF;
  border-color: var(--border-strong);
  box-shadow: 0 8px 24px rgba(81, 70, 87, 0.08);
}

/* 推荐套餐：高亮强调 */
.mixer-channel-strip.channel-recommended {
  background: linear-gradient(135deg, rgba(245, 230, 188, 0.35) 0%, rgba(239, 203, 216, 0.35) 100%);
  border: 2px solid var(--color-rose-dark);
  box-shadow: 0 10px 30px rgba(222, 164, 184, 0.25);
}

.rec-banner-badge {
  position: absolute;
  top: -12px;
  right: 32px;
  background: linear-gradient(135deg, #E2799A, #9F6EA3);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  box-shadow: 0 3px 8px rgba(159, 110, 163, 0.3);
  letter-spacing: 0.5px;
}

.channel-id-cell {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.channel-id-tag {
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-subtle);
}

.channel-name {
  font-size: 17px;
  font-weight: 800;
  color: var(--color-text);
}

.channel-knobs-features {
  display: flex;
  align-items: center;
  gap: 24px;
}

.channel-knobs-group {
  display: flex;
  gap: 14px;
}

.knob-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.channel-feature-tags {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
}

.channel-fader-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}

.fader-track {
  width: 70px;
  height: 8px;
  background: rgba(81, 70, 87, 0.12);
  border-radius: 4px;
  position: relative;
}

.fader-handle {
  position: absolute;
  top: -6px;
  left: 65%;
  width: 12px;
  height: 20px;
  background: #FFFFFF;
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.channel-fader-cell span.db-val {
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-light);
}

.channel-price-cell {
  display: flex;
  flex-direction: column;
  text-align: right;
}

.channel-price-cell .price-num {
  font-family: var(--font-latin);
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
}

.channel-price-cell .price-cycle {
  font-size: 11px;
  color: var(--color-text-subtle);
}

.channel-cta-cell {
  display: flex;
  justify-content: flex-end;
}

/* 九篇文章：唱片目录 (Discography Catalog) */
.articles-section {
  padding: 40px 0 80px 0;
}

.catalog-stack {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.catalog-entry {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 36px;
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sleeve);
  align-items: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.catalog-entry:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(81, 70, 87, 0.1);
  border-color: var(--border-strong);
}

/* 交替布局：偶数项封面在右 */
.catalog-entry.reverse {
  grid-template-columns: 1fr 280px;
}

.catalog-entry.reverse .catalog-cover-col {
  order: 2;
}

.catalog-entry.reverse .catalog-text-col {
  order: 1;
}

/* 封面艺术框 */
.catalog-cover-col {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(81, 70, 87, 0.12);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px;
  border: 1px solid var(--border-soft);
}

.catalog-cover-disc {
  position: absolute;
  top: 15px;
  right: -30px;
  width: 120px;
  height: 120px;
  opacity: 0.18;
  pointer-events: none;
}

.catalog-cat-no {
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-text);
  background: rgba(255,255,255,0.7);
  padding: 2px 8px;
  border-radius: 4px;
  width: fit-content;
}

.catalog-cover-title {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
}

.catalog-text-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.catalog-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--color-text-subtle);
  font-family: var(--font-latin);
}

.catalog-text-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.35;
}

.catalog-text-title a:hover {
  color: var(--color-rose-dark);
}

.catalog-excerpt {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.catalog-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-top: 6px;
}

.catalog-read-more:hover {
  color: var(--color-rose-dark);
  text-decoration: underline;
}

/* 评价：电台短评 (FM Radio Comments) */
.reviews-section {
  padding: 40px 0 70px 0;
}

.radio-reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.radio-review-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 26px;
  box-shadow: var(--shadow-sleeve);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.radio-quote-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.radio-station-tag {
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 700;
  background: var(--color-lilac);
  padding: 3px 8px;
  border-radius: 4px;
  color: var(--color-text);
}

.radio-broadcast-time {
  font-size: 11px;
  color: var(--color-text-subtle);
  font-family: var(--font-latin);
}

.review-quote-body {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text);
  font-style: italic;
  margin-bottom: 20px;
  position: relative;
}

.review-author-row {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px dashed var(--border-soft);
  padding-top: 14px;
}

.author-avatar-mini {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-lilac), var(--color-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  color: var(--color-text);
}

.author-info-text {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 14px;
  font-weight: 700;
}

.author-role {
  font-size: 12px;
  color: var(--color-text-light);
}

/* 常见问题：细线列表 (Fine-Line FAQ) */
.faq-section {
  padding: 40px 0 80px 0;
}

.fine-line-faq {
  max-width: 860px;
  margin: 0 auto;
  border-top: 1px solid var(--border-strong);
}

.faq-line-item {
  border-bottom: 1px solid var(--border-soft);
  padding: 20px 0;
  transition: all 0.2s ease;
}

.faq-line-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
}

.faq-toggle-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-latin);
  font-weight: 700;
  color: var(--color-text-light);
  transition: transform 0.25s ease;
}

.faq-line-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  background: var(--color-lilac);
  color: var(--color-text);
}

.faq-line-answer {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s ease, opacity 0.3s ease, margin-top 0.3s ease;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-light);
}

.faq-line-item.active .faq-line-answer {
  max-height: 400px;
  opacity: 1;
  margin-top: 14px;
}

/* 页脚 (Footer) */
.studio-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-soft);
  padding: 60px 0 30px 0;
  margin-top: 60px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-brand-title {
  font-size: 22px;
  font-weight: 800;
}

.footer-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.footer-links-col h4 {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  color: var(--color-text);
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
  color: var(--color-text-light);
}

.footer-links-list a:hover {
  color: var(--color-text);
  text-decoration: underline;
}

.footer-bottom-bar {
  border-top: 1px solid var(--border-soft);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--color-text-subtle);
  flex-wrap: wrap;
  gap: 14px;
}

.partner-links-single {
  display: flex;
  gap: 16px;
  align-items: center;
}

.partner-links-single a {
  color: var(--color-text-light);
  text-decoration: underline;
}

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

/* 独立内容页通用样式 (Article & Legal & About & Sitemap) */
.article-page-wrap {
  padding: 50px 0 80px 0;
}

.article-header {
  margin-bottom: 36px;
  text-align: center;
}

.article-header h1 {
  font-size: 34px;
  font-weight: 800;
  margin: 16px 0;
  line-height: 1.35;
}

.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  color: var(--color-text-subtle);
  font-family: var(--font-latin);
}

.article-card-body {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 46px;
  box-shadow: var(--shadow-sleeve);
  max-width: 900px;
  margin: 0 auto;
}

.article-rich-text {
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-text);
}

.article-rich-text h2 {
  font-size: 22px;
  margin: 34px 0 16px 0;
  border-left: 4px solid var(--color-lilac-dark);
  padding-left: 12px;
}

.article-rich-text h3 {
  font-size: 18px;
  margin: 24px 0 12px 0;
}

.article-rich-text p {
  margin-bottom: 18px;
}

.article-rich-text ul, .article-rich-text ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.article-rich-text li {
  margin-bottom: 8px;
}

.article-rich-text blockquote {
  background: rgba(225, 202, 230, 0.2);
  border-left: 4px solid var(--color-rose-dark);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}

.article-rich-text table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.article-rich-text th, .article-rich-text td {
  border: 1px solid var(--border-soft);
  padding: 12px 14px;
  text-align: left;
}

.article-rich-text th {
  background: rgba(206, 223, 240, 0.35);
  font-weight: 700;
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr;
  }
  
  .booklet-spread {
    grid-template-columns: 1fr;
  }
  
  .booklet-spread::after {
    display: none;
  }
  
  .booklet-page.page-left {
    border-right: none;
    border-bottom: 1px solid var(--border-soft);
  }
  
  .mixer-channel-strip {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }
  
  .channel-knobs-features {
    grid-column: 1 / -1;
  }
  
  .channel-fader-cell {
    grid-column: 1 / -1;
  }
  
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-strong);
    padding: 20px;
    box-shadow: 0 10px 24px rgba(81, 70, 87, 0.1);
  }
  
  .mobile-nav-toggle {
    display: flex;
  }
  
  .audio-track-lane {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .track-lane-sidebar {
    border-right: none;
    border-bottom: 1px dashed var(--border-soft);
    padding-right: 0;
    padding-bottom: 10px;
  }
  
  .catalog-entry, .catalog-entry.reverse {
    grid-template-columns: 1fr;
  }
  
  .catalog-entry.reverse .catalog-cover-col {
    order: 1;
  }
  
  .catalog-entry.reverse .catalog-text-col {
    order: 2;
  }
  
  .mixer-channel-strip {
    grid-template-columns: 1fr;
  }
  
  .channel-cta-cell {
    justify-content: flex-start;
  }
  
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-album-title {
    font-size: 28px;
  }
  
  .article-card-body {
    padding: 24px;
  }
}

/* 无障碍：减弱动态效果模式 (prefers-reduced-motion) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .logo-disc-mini, .album-vinyl-peek {
    animation: none !important;
  }
}