/* ==========================================================================
   山水云 (Shanshui Cloud) - 东方禅意极简 · 现代高级科技美学样式库
   Atmospheric Zen-Minimalist UI Design for High-End Proxy Service
   Palette: Deep Charcoal (#121316) · Misty Parchment (#fbf9f5) · Celadon Green (#538067)
   ========================================================================== */

:root {
  /* ---------------- 亮色模式 (默认: 烟岚素纸 & 青瓷温润) ---------------- */
  --bg-primary: #fbf9f5;             /* 素绢纸白，温和不刺眼 */
  --bg-surface: #ffffff;             /* 浮层纯白 */
  --bg-surface-elevated: #f5f2eb;    /* 微泛宣纸微黄底色 */
  --bg-subtle: #efeae1;              /* 浅墨晕染底色 */
  --bg-glass: rgba(251, 249, 245, 0.88);
  --bg-card-glass: rgba(255, 255, 255, 0.72);

  --text-main: #121316;              /* 浓墨玄黑 */
  --text-secondary: #4a505b;         /* 灰黛山石色 */
  --text-muted: #848c96;             /* 淡墨苍烟色 */
  --text-inverse: #fbf9f5;

  /* 核心意象色彩: 青瓷绿 (Celadon Green) & 苍山黛 (Muted Stone) */
  --celadon: #538067;
  --celadon-light: #6ea184;
  --celadon-subtle: rgba(83, 128, 103, 0.1);
  --celadon-glow: rgba(83, 128, 103, 0.25);
  --stone-accent: #2c3038;
  --gold-accent: #b69255;

  /* 渐变体系：山湖水波与日照浮光 */
  --gradient-lake: linear-gradient(135deg, #446d57 0%, #5d8e73 50%, #7db094 100%);
  --gradient-shimmer: linear-gradient(120deg, #446d57 0%, #689a7f 25%, #d1e5d8 50%, #446d57 75%, #5d8e73 100%);
  --gradient-mist: radial-gradient(circle at 50% 30%, rgba(110, 161, 132, 0.12) 0%, rgba(251, 249, 245, 0) 70%);

  --border-light: rgba(18, 19, 22, 0.08);
  --border-glass: rgba(83, 128, 103, 0.2);
  --border-focus: rgba(83, 128, 103, 0.5);

  --shadow-sm: 0 2px 8px rgba(18, 19, 22, 0.04);
  --shadow-md: 0 8px 24px -4px rgba(18, 19, 22, 0.07);
  --shadow-lg: 0 20px 48px -8px rgba(18, 19, 22, 0.09);
  --shadow-celadon: 0 8px 30px rgba(83, 128, 103, 0.25);

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", "STSong", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-pill: 9999px;

  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --max-width: 1220px;
}

/* ---------------- 暗色模式 (沉稳玄炭 #121316 & 烟岚青瓷微光) ---------------- */
[data-theme="dark"] {
  --bg-primary: #121316;             /* 深炭黑底色 (Deep Charcoal) */
  --bg-surface: #181a1f;             /* 浮层深墨 */
  --bg-surface-elevated: #20232a;    /* 提亮石板色 */
  --bg-subtle: #272b34;              /* 幽暗黛青 */
  --bg-glass: rgba(18, 19, 22, 0.88);
  --bg-card-glass: rgba(24, 26, 31, 0.75);

  --text-main: #f3f1ec;              /* 素雪白 */
  --text-secondary: #a7adb7;         /* 雾岩灰 */
  --text-muted: #6b7280;             /* 深苔灰 */
  --text-inverse: #121316;

  --celadon: #6fa186;
  --celadon-light: #8cbfa3;
  --celadon-subtle: rgba(111, 161, 134, 0.15);
  --celadon-glow: rgba(111, 161, 134, 0.35);
  --stone-accent: #c4cad4;

  --gradient-lake: linear-gradient(135deg, #4f7963 0%, #6fa186 50%, #90c2a7 100%);
  --gradient-shimmer: linear-gradient(120deg, #4f7963 0%, #7db095 25%, #e1f0e8 50%, #4f7963 75%, #6fa186 100%);
  --gradient-mist: radial-gradient(circle at 50% 30%, rgba(111, 161, 134, 0.18) 0%, rgba(18, 19, 22, 0) 70%);

  --border-light: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(111, 161, 134, 0.25);
  --border-focus: rgba(111, 161, 134, 0.6);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 30px -4px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 50px -8px rgba(0, 0, 0, 0.7);
  --shadow-celadon: 0 8px 35px rgba(111, 161, 134, 0.28);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: 86px; /* 锚点跳转避开顶部导航 */
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
  overflow-x: hidden;
  position: relative;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, opacity 0.25s ease;
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
}

/* 优雅宋体/明体优雅标题 */
.zen-serif {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* 水波青瓷渐变文字 */
.text-celadon-gradient {
  background: var(--gradient-lake);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------------- 顶部导航栏 (Header) ---------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-smooth);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-main);
}

.brand-icon-zen {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--gradient-lake);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: var(--shadow-celadon);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand-logo:hover .brand-icon-zen {
  transform: rotate(6deg) scale(1.05);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.nav-link {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 4px;
  transition: color 0.25s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--celadon);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--celadon);
  border-radius: 2px;
  transition: width 0.3s ease;
}

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

/* 推荐资讯特殊微高亮标记 */
.nav-badge-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--celadon);
  border-radius: 50%;
  margin-left: 4px;
  vertical-align: middle;
  box-shadow: 0 0 6px var(--celadon);
}

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

/* 精致透明化昼夜模式切换按钮 */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(83, 128, 103, 0.08);
  border: 1px solid var(--border-light);
  color: var(--text-secondary);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  transition: all 0.3s ease;
}

.theme-toggle-btn:hover {
  border-color: var(--border-glass);
  color: var(--celadon);
  transform: scale(1.05);
  box-shadow: var(--shadow-sm);
}

.theme-icon-sun,
.theme-icon-moon {
  width: 20px;
  height: 20px;
  position: absolute;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.3s ease;
}

[data-theme="light"] .theme-icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
[data-theme="light"] .theme-icon-moon {
  opacity: 0;
  transform: rotate(90deg) scale(0.4);
}

[data-theme="dark"] .theme-icon-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0.4);
}
[data-theme="dark"] .theme-icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
  color: #7db095;
}

/* ---------------- 按钮体系：湖面日照粼光 (Liquid Shimmer) ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  position: relative;
  overflow: hidden;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

/* 湖水潋滟流光效果 (Liquid Shimmer Button) */
.btn-shimmer {
  background: var(--gradient-lake);
  color: #ffffff !important;
  box-shadow: var(--shadow-celadon);
  border: 1px solid rgba(255, 255, 255, 0.25);
  background-size: 200% 200%;
}

.btn-shimmer::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.4) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: skewX(-25deg);
  transition: none;
}

.btn-shimmer:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px var(--celadon-glow);
  filter: brightness(1.05);
}

.btn-shimmer:hover::before {
  left: 140%;
  transition: left 0.85s ease-in-out;
}

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

.btn-zen-outline:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-glass);
  color: var(--celadon);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 36px;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.btn-block {
  width: 100%;
}

/* ---------------- 主视觉区 (Hero Section) ---------------- */
.hero-section {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 140px;
  padding-bottom: 90px;
  overflow: hidden;
  text-align: center;
}

/* 背景 Canvas：水墨群峦多层视差与交互水波涟漪 */
#heroCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
  z-index: 1;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1160px;
  margin: 0 auto;
  pointer-events: none; /* 让鼠标水波事件穿透到 Canvas，按钮区域单独启用 */
}

.hero-inner a,
.hero-inner button,
.hero-badge,
.hero-stats {
  pointer-events: auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 22px;
  background: var(--bg-card-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  color: var(--celadon);
  margin-bottom: 28px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  white-space: nowrap;
}

.hero-badge-gem {
  width: 7px;
  height: 7px;
  background: var(--celadon);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--celadon);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3.2vw, 3rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-main);
  margin-bottom: 24px;
  white-space: nowrap; /* 强制单行，严禁任何字符分行折行 */
}

/* 品牌专属高光突出样式 (山水云 特殊字体渐变与立体质感) */
.hero-brand-highlight {
  display: inline-block;
  font-family: var(--font-serif);
  font-weight: 850;
  letter-spacing: 0.08em;
  background: linear-gradient(135deg, #1f4a33 0%, #3e7355 35%, #5e9b77 70%, #8ec5a7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 4px 14px rgba(62, 115, 85, 0.3));
  position: relative;
  padding: 0 4px;
  transform: translateZ(0);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), filter 0.3s ease;
}

.hero-brand-highlight:hover {
  transform: translateY(-2px) scale(1.04);
  filter: drop-shadow(0 6px 20px rgba(62, 115, 85, 0.45));
}

.hero-brand-highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 6px;
  right: 6px;
  height: 3px;
  background: linear-gradient(90deg, rgba(62, 115, 85, 0) 0%, rgba(94, 155, 119, 0.5) 50%, rgba(62, 115, 85, 0) 100%);
  border-radius: var(--radius-pill);
  pointer-events: none;
}

[data-theme="dark"] .hero-brand-highlight {
  background: linear-gradient(135deg, #5da07c 0%, #7ec49e 45%, #b4ebd1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 18px rgba(111, 161, 134, 0.45));
}

[data-theme="dark"] .hero-brand-highlight::after {
  background: linear-gradient(90deg, rgba(126, 196, 158, 0) 0%, rgba(126, 196, 158, 0.6) 50%, rgba(126, 196, 158, 0) 100%);
}

.hero-subtitle {
  font-size: 1.22rem;
  line-height: 1.85;
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 40px auto;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

/* 核心指标统计 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  background: var(--bg-card-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 26px 36px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(14px);
}

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

.stat-num {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 4px;
}

.stat-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

/* ---------------- 章节通用规范 ---------------- */
.section {
  padding: 104px 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-surface);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 64px auto;
}

.section-subtag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: var(--celadon-subtle);
  color: var(--celadon);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  border: 1px solid var(--border-glass);
  white-space: nowrap;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---------------- 3D 陀螺仪无框浮动玻璃卡片 (Floating Glass Tiles) ---------------- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  perspective: 1000px; /* 3D 物理倾斜基底 */
}

.zen-tile {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 42px 34px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.25s ease-out, box-shadow 0.25s ease-out, border-color 0.25s ease-out;
  overflow: hidden;
}

.zen-tile:hover {
  border-color: var(--border-glass);
  box-shadow: var(--shadow-lg), 0 0 30px var(--celadon-subtle);
}

.zen-tile-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: var(--celadon-subtle);
  color: var(--celadon);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 26px;
  border: 1px solid var(--border-glass);
  transition: all 0.3s ease;
}

.zen-tile:hover .zen-tile-icon {
  background: var(--gradient-lake);
  color: #ffffff;
  transform: translateZ(24px);
  box-shadow: var(--shadow-celadon);
}

.zen-tile-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 650;
  color: var(--text-main);
  margin-bottom: 14px;
}

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

.zen-points {
  list-style: none;
  margin-top: auto;
  border-top: 1px dashed var(--border-light);
  padding-top: 20px;
}

.zen-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.zen-points li:last-child {
  margin-bottom: 0;
}

.zen-point-icon {
  width: 15px;
  height: 15px;
  color: var(--celadon);
  flex-shrink: 0;
}

/* ---------------- 流媒体 & AI 支持图卡 ---------------- */
.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.showcase-tile {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 44px 38px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(14px);
  position: relative;
  transition: all 0.35s ease;
}

.showcase-tile:hover {
  transform: translateY(-4px);
  border-color: var(--border-glass);
  box-shadow: var(--shadow-lg);
}

.showcase-header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
}

.showcase-symbol {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  background: var(--gradient-lake);
  box-shadow: var(--shadow-celadon);
}

.showcase-title {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 650;
  color: var(--text-main);
}

.showcase-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 28px;
}

.service-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.service-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  color: var(--text-main);
  transition: all 0.25s ease;
  white-space: nowrap;
}

.service-pill:hover {
  background: var(--celadon-subtle);
  border-color: var(--border-glass);
  color: var(--celadon);
  transform: translateY(-2px);
}

.showcase-meta-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
}

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
}

.meta-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
}

.meta-tag {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--celadon-subtle);
  color: var(--celadon);
  border: 1px solid var(--border-glass);
  white-space: nowrap;
}

/* ---------------- 套餐价格表 (真实市场价格参考) ---------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
}

.pricing-tile {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 44px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(14px);
  transition: all 0.35s ease;
}

.pricing-tile:hover {
  transform: translateY(-6px);
  border-color: var(--border-glass);
  box-shadow: var(--shadow-lg);
}

.pricing-tile.featured {
  border: 2px solid var(--celadon);
  box-shadow: var(--shadow-celadon), var(--shadow-md);
  background: linear-gradient(180deg, var(--bg-surface-elevated) 0%, var(--bg-surface) 100%);
}

.featured-flag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-lake);
  color: #ffffff;
  padding: 4px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.plan-heading {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.plan-summary {
  font-size: 0.92rem;
  color: var(--text-secondary);
  min-height: 44px;
  margin-bottom: 24px;
}

.price-display {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 26px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--border-light);
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.price-figure {
  font-family: var(--font-serif);
  font-size: 3.3rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
}

.price-tenure {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-left: 6px;
}

.plan-features {
  list-style: none;
  margin-bottom: 34px;
  flex-grow: 1;
}

.plan-feature-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.94rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.plan-feature-row.prominent {
  color: var(--text-main);
  font-weight: 600;
}

/* ---------------- 用户评价 ---------------- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.review-tile {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.review-tile:hover {
  transform: translateY(-4px);
  border-color: var(--border-glass);
  box-shadow: var(--shadow-md);
}

.review-stars-zen {
  color: var(--gold-accent);
  letter-spacing: 3px;
  margin-bottom: 18px;
  font-size: 1.1rem;
}

.review-quote {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  flex-grow: 1;
  font-style: italic;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border-light);
  padding-top: 18px;
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-lake);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
}

.reviewer-name {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
}

.reviewer-role {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ---------------- 常见问题 FAQ ---------------- */
.faq-box {
  max-width: 860px;
  margin: 0 auto;
}

.faq-card {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-card:hover {
  border-color: var(--border-glass);
}

.faq-trigger {
  width: 100%;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-main);
  background: transparent;
  cursor: pointer;
}

.faq-arrow {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-collapse {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 28px;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.8;
}

.faq-card.open .faq-arrow {
  transform: rotate(180deg);
  color: var(--celadon);
}

.faq-card.open .faq-collapse {
  max-height: 350px;
  padding-bottom: 24px;
}

/* ---------------- 推荐资讯 (Article/Insights) 页面专用样式 ---------------- */
.insight-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  margin-top: 40px;
}

.insight-tile {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.insight-tile:hover {
  transform: translateY(-4px);
  border-color: var(--border-glass);
  box-shadow: var(--shadow-lg);
}

.insight-category {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--celadon-subtle);
  color: var(--celadon);
  margin-bottom: 16px;
  width: fit-content;
  white-space: nowrap;
}

.insight-title {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  line-height: 1.4;
}

.insight-excerpt {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 20px;
  flex-grow: 1;
}

.insight-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.84rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

/* ---------------- 深度长文文章 (Long-form SEO Article) 样式 ---------------- */
.article-page {
  padding: 130px 0 96px 0;
}

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

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

.article-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.article-breadcrumbs a {
  color: var(--text-muted);
}

.article-breadcrumbs a:hover {
  color: var(--celadon);
}

.article-title {
  font-family: var(--font-serif);
  font-size: 2.35rem;
  font-weight: 750;
  line-height: 1.35;
  color: var(--text-main);
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 24px;
  flex-wrap: wrap;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 目录 (TOC) */
.article-toc {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 48px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
}

.article-toc-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-left: 4px;
}

.article-toc-list a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color 0.2s ease, transform 0.2s ease;
  display: inline-block;
}

.article-toc-list a:hover {
  color: var(--celadon);
  transform: translateX(4px);
}

/* 正文 */
.article-content {
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--text-secondary);
}

.article-content h2 {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 48px 0 20px 0;
  padding-left: 14px;
  border-left: 4px solid var(--celadon);
  line-height: 1.35;
}

.article-content h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 650;
  color: var(--text-main);
  margin: 32px 0 14px 0;
}

.article-content p {
  margin-bottom: 22px;
}

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

.article-content li {
  margin-bottom: 10px;
}

.article-content strong {
  color: var(--text-main);
}

.article-content a.internal-link {
  color: var(--celadon);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-content a.internal-link:hover {
  color: var(--celadon-light);
}

.article-box-quote {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--celadon);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 30px 0;
  font-size: 0.98rem;
  color: var(--text-secondary);
  font-style: italic;
}

.article-table-wrap {
  overflow-x: auto;
  margin: 30px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
}

.article-table th, 
.article-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.94rem;
}

.article-table th {
  background: var(--bg-subtle);
  color: var(--text-main);
  font-weight: 700;
}

/* 文章专属 FAQ 区域 */
.article-faq-section {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border-light);
}

.article-faq-title {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 相关阅读卡片 */
.article-related-section {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border-light);
}

.article-related-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 24px;
}

.article-related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.article-related-card {
  background: var(--bg-card-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.article-related-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glass);
  box-shadow: var(--shadow-md);
}

.article-related-card h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 650;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
}

.article-related-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 12px;
}

.article-related-link {
  font-size: 0.85rem;
  color: var(--celadon);
  font-weight: 600;
}

/* ---------------- 页脚规范 (只保留4个标题链接在独立页面展示) ---------------- */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  padding: 72px 0 40px 0;
  transition: background-color var(--transition-smooth);
}

.footer-main-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 36px;
  flex-wrap: wrap;
  gap: 28px;
}

.footer-brand-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-brand-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
}

.footer-slogan {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* 规范：页脚只保留这四个标题链接 */
.footer-four-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-four-nav a {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 0;
  position: relative;
  transition: color 0.25s ease;
}

.footer-four-nav a:hover {
  color: var(--celadon);
}

.footer-credit-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-credit-row a {
  color: var(--text-muted);
}

.footer-credit-row a:hover {
  color: var(--celadon);
}

/* ---------------- 响应式断点 (@media) ---------------- */
@media (max-width: 1024px) {
  .hero-title {
    font-size: clamp(1.3rem, 3.2vw, 2.4rem);
    white-space: nowrap;
  }
  .advantages-grid,
  .pricing-grid,
  .reviews-grid,
  .insight-card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .showcase-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-container {
    height: 68px;
  }

  .nav-menu {
    display: none; /* 移动端顶部空间优先保留品牌与动作 */
  }

  .hero-section {
    padding-top: 110px;
    padding-bottom: 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: clamp(1.1rem, 3.8vw, 1.85rem);
    white-space: nowrap;
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 2rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero-cta-group .btn {
    width: 100%;
    min-height: 50px;
  }

  /* 手机端完美单栏展示 */
  .advantages-grid,
  .pricing-grid,
  .reviews-grid,
  .insight-card-grid,
  .article-related-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .article-title {
    font-size: 1.8rem;
  }

  .article-toc {
    padding: 22px 18px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: 20px 16px;
    gap: 16px;
  }

  .stat-num {
    font-size: 1.7rem;
  }

  .zen-tile,
  .showcase-tile,
  .pricing-tile,
  .review-tile,
  .insight-tile {
    padding: 30px 22px;
  }

  .footer-main-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
  }

  .footer-four-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    width: 100%;
  }

  .footer-four-nav a {
    display: block;
    width: 100%;
    padding: 6px 0;
    font-size: 1.05rem;
  }

  .footer-credit-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: clamp(0.95rem, 4.6vw, 1.25rem);
    white-space: nowrap;
  }
}