/* ==========================================================================
   MOJIENET.CLICK | 魔戒 · 品牌官方落地页
   设计风格：黑白高级排版风 (High-End Monochrome Editorial Typography)
   核心框架：世界时区 · 世界时钟表盘缓动 (Framework 87)
   ========================================================================== */

:root {
  /* 高级黑白调色板 (Monochrome Base) */
  --bg-primary: #08080a;
  --bg-secondary: #0f1015;
  --bg-card: rgba(18, 19, 26, 0.75);
  --bg-card-hover: rgba(26, 28, 38, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-elevated: rgba(255, 255, 255, 0.06);

  /* 边框与极细标线 (Hairline Grids & Borders) */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.14);
  --border-focus: rgba(255, 255, 255, 0.4);
  --border-dashed: rgba(255, 255, 255, 0.12);

  /* 文字系统 (Editorial Typography) */
  --text-primary: #ffffff;
  --text-secondary: #d4d4d8;
  --text-muted: #8e8e99;
  --text-faint: #52525b;

  /* 魔戒黄金点缀 (The Golden Ring Subtle Accent) */
  --gold-primary: #f59e0b;
  --gold-light: #fde68a;
  --gold-dark: #b45309;
  --gold-glow: rgba(245, 158, 11, 0.22);
  --gold-badge-bg: rgba(245, 158, 11, 0.1);
  --gold-badge-border: rgba(245, 158, 11, 0.28);

  /* 空间与排版尺寸 */
  --font-serif: "Cinzel", "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;

  --container-max: 1240px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* 缓动曲线 (Watchmaker Precision Easing) */
  --ease-chrono: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s var(--ease-smooth);
  --transition-normal: 0.35s var(--ease-chrono);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.68;
  letter-spacing: -0.01em;
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 背景精密标线与网格 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: -2;
}

/* 柔和环境光晕 */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.05) 0%, rgba(255, 255, 255, 0.02) 40%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

/* 链接与排版基础 */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

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

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

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

/* 标题字体 */
h1, h2, h3, h4, .serif-heading {
  font-family: var(--font-serif);
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* 标签与编目小字 */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--gold-light);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--gold-primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--gold-primary);
}

/* 瑞士黑白排版章节标号 */
.section-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
  margin-bottom: 32px;
}

.section-number {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
}

.section-coord {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-faint);
}

/* ==========================================================================
   顶部导航栏 (Editorial Header / Nav)
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(8, 8, 10, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
  transition: transform var(--transition-normal), filter var(--transition-normal);
  filter: drop-shadow(0 0 8px rgba(245, 158, 11, 0.4));
}

.brand-logo:hover .brand-logo-img {
  transform: rotate(25deg) scale(1.08);
  filter: drop-shadow(0 0 14px rgba(245, 158, 11, 0.75));
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  line-height: 1.1;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--text-primary);
  transition: width var(--transition-fast);
}

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

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

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

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border: 1px solid var(--text-primary);
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.12);
}

.btn-primary:hover {
  background-color: #e4e4e7;
  color: #000000;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 255, 255, 0.22);
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: var(--bg-glass-elevated);
  border-color: var(--border-focus);
  transform: translateY(-2px);
}

.btn-gold {
  background: linear-gradient(135deg, #fde68a 0%, #f59e0b 60%, #d97706 100%);
  color: #09090b;
  font-weight: 700;
  border: 1px solid rgba(253, 230, 138, 0.5);
  box-shadow: 0 4px 18px var(--gold-glow);
}

.btn-gold:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(245, 158, 11, 0.45);
}

.nav-toggle {
  display: none;
  padding: 8px;
  color: var(--text-primary);
}

/* ==========================================================================
   首屏 Hero 区域 (Chrono Hero & Dial Showcase)
   ========================================================================== */
.hero-section {
  padding-top: 140px;
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 3.8rem);
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero-title-accent {
  background: linear-gradient(135deg, #ffffff 30%, #fde68a 80%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: clamp(1rem, 1.3vw, 1.2rem);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 36px;
  padding: 18px 24px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
}

.hero-stat-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.hero-stat-value span {
  color: var(--gold-primary);
  font-size: 1rem;
}

.hero-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-top: 4px;
}

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

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.hero-guarantee-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-guarantee-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-muted);
}

/* ==========================================================================
   世界时钟表盘缓动 (Framework 87 Core Interactive Dial)
   ========================================================================== */
.dial-stage-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.dial-chassis {
  position: relative;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, #161821 0%, #0d0e13 70%, #060608 100%);
  border: 2px solid rgba(255, 255, 255, 0.12);
  box-shadow: 
    0 0 0 8px rgba(255, 255, 255, 0.02),
    0 24px 60px rgba(0, 0, 0, 0.7),
    inset 0 2px 6px rgba(255, 255, 255, 0.2),
    inset 0 -4px 12px rgba(0, 0, 0, 0.8);
  user-select: none;
  cursor: grab;
  touch-action: none;
}

.dial-chassis:active {
  cursor: grabbing;
}

/* 黄金外环刻度 (魔戒金环光芒) */
.dial-gold-ring {
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  border: 3px solid transparent;
  border-image: linear-gradient(135deg, #fde68a, #f59e0b, #92400e, #fde68a) 1;
  box-shadow: 0 0 25px var(--gold-glow);
  pointer-events: none;
}

/* 缓动世界刻度盘 (Rotating World Bezel) */
.dial-bezel-rotating {
  position: absolute;
  inset: 18px;
  border-radius: 50%;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  transition: transform 0.8s var(--ease-chrono);
  will-change: transform;
}

/* 表盘刻度 SVG */
.dial-face-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 时钟指针 */
.dial-hands-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.dial-hand {
  position: absolute;
  bottom: 50%;
  left: 50%;
  transform-origin: 50% 100%;
  border-radius: 4px;
}

.hand-hour {
  width: 4px;
  height: 70px;
  margin-left: -2px;
  background: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
  z-index: 5;
}

.hand-minute {
  width: 2.5px;
  height: 105px;
  margin-left: -1.25px;
  background: #d4d4d8;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
  z-index: 6;
}

.hand-second {
  width: 1.5px;
  height: 125px;
  margin-left: -0.75px;
  background: var(--gold-primary);
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.8);
  z-index: 7;
}

.hand-second::after {
  content: "";
  position: absolute;
  top: 100%;
  left: -2px;
  width: 5.5px;
  height: 24px;
  background: var(--gold-primary);
  border-radius: 2px;
}

.dial-center-cap {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  margin-left: -7px;
  border-radius: 50%;
  background: #ffffff;
  border: 2px solid var(--gold-primary);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.7);
  z-index: 8;
}

/* 表盘状态读数小徽章 */
.dial-telemetry-badge {
  margin-top: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 18px;
  background: rgba(18, 19, 26, 0.85);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.dial-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

/* ==========================================================================
   世界时区节点矩阵 (Timezone Nodes Hub)
   ========================================================================== */
.timezone-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.01) 50%, transparent 100%);
}

.section-header-centered {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px auto;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.timezone-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.timezone-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  cursor: pointer;
  transition: all var(--transition-normal);
  overflow: hidden;
}

.timezone-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--text-primary);
  transition: height var(--transition-normal);
}

.timezone-card:hover, .timezone-card.active {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.timezone-card.active::before {
  height: 100%;
  background: var(--gold-primary);
  box-shadow: 0 0 12px var(--gold-primary);
}

.tz-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.tz-city-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
}

.tz-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 2px 8px;
  background: var(--bg-glass-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.tz-time-display {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.tz-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  border-top: 1px dashed var(--border-subtle);
  padding-top: 12px;
}

.tz-latency {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #10b981;
}

.tz-features {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.4;
}

/* ==========================================================================
   深度解读文章专栏 (Editorial In-Depth Article Feature)
   ========================================================================== */
.editorial-article-section {
  padding: 96px 0;
  position: relative;
}

.editorial-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  position: relative;
}

.editorial-sidebar {
  border-right: 1px solid var(--border-subtle);
  padding-right: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.editorial-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--gold-badge-bg);
  border: 1px solid var(--gold-badge-border);
  color: var(--gold-light);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.editorial-title-side {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.35;
  margin-bottom: 20px;
}

.editorial-meta-list {
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.editorial-meta-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border-subtle);
  padding-bottom: 6px;
}

.editorial-body {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.editorial-body h3 {
  font-size: 1.35rem;
  margin: 28px 0 12px 0;
  color: var(--text-primary);
}

.editorial-body p {
  margin-bottom: 18px;
}

.editorial-pullquote {
  margin: 24px 0;
  padding: 20px 24px;
  background: var(--bg-glass-elevated);
  border-left: 3px solid var(--gold-primary);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-primary);
}

/* ==========================================================================
   套餐价格展示 (Pricing Grid with 3D Tilt)
   ========================================================================== */
.pricing-section {
  padding: 96px 0;
  position: relative;
}

.pricing-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 20px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  border-radius: var(--radius-full);
  background: var(--bg-glass);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
}

.filter-btn.active {
  background: var(--text-primary);
  color: var(--bg-primary);
  border-color: var(--text-primary);
  font-weight: 600;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}

.pricing-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  transform-style: preserve-3d;
}

.pricing-card:hover {
  border-color: var(--border-focus);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}

.pricing-card.featured {
  border-color: rgba(245, 158, 11, 0.4);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.05) 0%, rgba(18, 19, 26, 0.85) 100%);
}

.pricing-card.featured::after {
  content: "HOT · 热门推荐";
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--gold-primary);
  color: #000000;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.1em;
}

.pricing-card.value-max::after {
  content: "BEST VALUE · 最高性价比";
  position: absolute;
  top: -12px;
  right: 20px;
  background: #ffffff;
  color: #000000;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.1em;
}

.pricing-card-header {
  margin-bottom: 20px;
}

.plan-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 16px 0 8px 0;
}

.plan-currency {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--text-primary);
  font-weight: 600;
}

.plan-price {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.plan-cycle {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.plan-ratio-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--bg-glass-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold-light);
  margin-bottom: 20px;
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.plan-feature-icon {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  color: var(--gold-primary);
  flex-shrink: 0;
}

/* ==========================================================================
   文章专栏列表入口 (Knowledge Hub Cards)
   ========================================================================== */
.articles-section {
  padding: 96px 0;
  border-top: 1px solid var(--border-subtle);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.article-summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.article-summary-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.article-card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-primary);
  margin-bottom: 12px;
  transition: color var(--transition-fast);
}

.article-summary-card:hover .article-card-title {
  color: var(--gold-light);
}

.article-card-excerpt {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.article-card-link-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.05em;
}

.article-card-link-text svg {
  transition: transform var(--transition-fast);
}

.article-summary-card:hover .article-card-link-text svg {
  transform: translateX(4px);
}

/* ==========================================================================
   常见问题 FAQ (Collapsible Accordion)
   ========================================================================== */
.faq-section {
  padding: 96px 0;
  border-top: 1px solid var(--border-subtle);
}

.faq-container {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast);
}

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  gap: 16px;
  transition: color var(--transition-fast);
}

.faq-question-btn:hover {
  color: var(--gold-light);
}

.faq-icon-cross {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.35s var(--ease-chrono);
  color: var(--text-muted);
}

.faq-item.open .faq-icon-cross {
  transform: rotate(45deg);
  color: var(--gold-primary);
}

.faq-answer-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-chrono), opacity 0.3s ease;
  opacity: 0;
}

.faq-item.open .faq-answer-panel {
  max-height: 400px;
  opacity: 1;
}

.faq-answer-inner {
  padding-bottom: 24px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ==========================================================================
   用户评价专区 (Testimonials Section - 6 Users Grid)
   ========================================================================== */
.testimonials-section {
  padding: 96px 0;
  border-top: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.015) 50%, transparent 100%);
  position: relative;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-focus);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.55);
}

.testimonial-quote {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-style: normal;
}

.user {
  display: flex;
  align-items: center;
  border-top: 1px dashed var(--border-subtle);
  padding-top: 18px;
}

.user-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  margin-right: 14px;
  border: 2px solid rgba(255, 255, 255, 0.12);
  background: #18181b;
}

.user-info h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 4px;
}

.user-info span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   页脚 (Editorial Semantic Footer)
   ========================================================================== */
.site-footer {
  padding: 80px 0 36px 0;
  background: #040405;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand p {
  color: var(--text-muted);
  max-width: 320px;
  margin: 16px 0;
  line-height: 1.65;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-primary);
  text-transform: uppercase;
  margin-bottom: 20px;
}

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

.footer-nav-link {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

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

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 32px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.footer-legal-links {
  display: flex;
  gap: 24px;
}

/* ==========================================================================
   移动端与多分辨率适配 (Responsive Breakpoints)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

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

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

  .hero-stats-row {
    width: 100%;
    max-width: 520px;
  }

  .hero-cta-group {
    justify-content: center;
  }

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

  .editorial-layout {
    grid-template-columns: 1fr;
    padding: 32px;
  }

  .editorial-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    padding-right: 0;
    padding-bottom: 24px;
  }

  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn-secondary {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .dial-chassis {
    width: 290px;
    height: 290px;
  }

  .hand-hour { height: 56px; }
  .hand-minute { height: 86px; }
  .hand-second { height: 100px; }

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

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

  .footer-bottom-bar {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-stats-row {
    grid-template-columns: 1fr;
    gap: 12px;
    text-align: center;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .dial-chassis {
    width: 260px;
    height: 260px;
  }
}

/* 动效尊重系统设置 */
@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;
  }
}