/* ==========================================================================
   风车云马 WindMillVPN - 东方国潮风原生样式表
   Pure Vanilla CSS - 秒开级无依赖优化
   ========================================================================== */

/* 引入 Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Ma+Shan+Zheng&family=Noto+Sans+SC:wght@300;400;500;700&family=Noto+Serif+SC:wght@400;500;600;700;900&family=ZCOOL+QingKe+HuangYou&display=swap');

/* 全局变量定义 (国潮配色 + 水墨朱红) */
:root {
  --bg-rice: #F5F1E8;          /* 米白 (主背景) */
  --bg-soft: #EFE9DA;          /* 软米色 (卡片背景) */
  --bg-deep: #1A1A1A;          /* 墨黑 (页脚深色背景) */
  --fg-main: #2B2B2B;          /* 浓墨字色 */
  --fg-sub: #5A5247;           /* 灰褐字色 */
  --fg-mute: #8A8270;          /* 浅赭英文译文色 */
  
  --cinnabar: #C8453C;         /* 朱红 (核心主色) */
  --cinnabar-deep: #9B2D26;    /* 浓朱红 */
  --indigo: #2C5F7C;           /* 黛蓝 */
  --ochre-gold: #B89968;       /* 赭金 */
  --ochre-dark: #6B5230;       /* 沉香木褐 */
  
  --border-light: #D9CFB8;     /* 米宣纸边框 */
  --border-dark: #B5A989;      /* 深刻边框 */
  --radius-restrained: 4px;    /* 克制微圆角 (非大圆角) */
  
  --font-serif: 'Noto Serif SC', 'Songti SC', SimSun, serif;
  --font-sans: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-brush: 'Ma Shan Zheng', cursive;
  --font-huangyou: 'ZCOOL QingKe HuangYou', cursive;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-rice);
  color: var(--fg-main);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-serif);
  font-size: 17px;
  line-height: 1.7;
  color: var(--fg-main);
  background-color: var(--bg-rice);
  background-image: radial-gradient(rgba(184, 153, 104, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  overflow-x: hidden;
}

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

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

/* 印章通用样式 */
.seal-stamp {
  font-family: var(--font-brush);
  background-color: var(--cinnabar);
  color: #FFF8EE;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-restrained);
  transform: rotate(-3deg);
  box-shadow: 2px 3px 8px rgba(200, 69, 60, 0.35);
  user-select: none;
  border: 1px dashed rgba(255, 255, 255, 0.4);
}

/* 英文副标题通用样式 */
.en-sub {
  display: block;
  font-family: var(--font-sans);
  font-size: 13px;
  font-style: italic;
  color: var(--fg-mute);
  font-weight: 400;
  line-height: 1.4;
  margin-top: 4px;
}

/* 容器规范 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   导航栏 Header & Nav
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(245, 241, 232, 0.94);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 12px rgba(90, 82, 71, 0.06);
}

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

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

.brand-stamp {
  width: 40px;
  height: 40px;
  background-color: var(--cinnabar);
  color: #FFF8EE;
  font-family: var(--font-huangyou);
  font-size: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-restrained);
  transform: rotate(-3deg);
  box-shadow: 2px 3px 6px rgba(155, 45, 38, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

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

.brand-name-cn {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 900;
  color: var(--fg-main);
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.brand-name-en {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--cinnabar);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--fg-main);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--cinnabar);
  transition: width 0.25s ease;
}

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

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

.nav-link.highlight-pill {
  background-color: rgba(200, 69, 60, 0.08);
  padding: 6px 14px;
  border-radius: var(--radius-restrained);
  border: 1px solid rgba(200, 69, 60, 0.3);
  color: var(--cinnabar);
}

.nav-link.highlight-pill:hover {
  background-color: var(--cinnabar);
  color: #FFF8EE;
}

.nav-link.highlight-pill::after {
  display: none;
}

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

/* 按钮规范 */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: #FFF8EE;
  background: linear-gradient(135deg, var(--cinnabar) 0%, var(--cinnabar-deep) 100%);
  border: 1px solid var(--cinnabar-deep);
  border-radius: var(--radius-restrained);
  box-shadow: 0 4px 14px rgba(200, 69, 60, 0.32);
  cursor: pointer;
  letter-spacing: 0.04em;
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200, 69, 60, 0.45);
  background: linear-gradient(135deg, #d44d44 0%, var(--cinnabar) 100%);
  color: #FFFFFF;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--indigo);
  background-color: transparent;
  border: 1px solid var(--indigo);
  border-radius: var(--radius-restrained);
  cursor: pointer;
  letter-spacing: 0.03em;
  transition: all 0.25s ease;
  text-decoration: none;
}

.btn-secondary:hover {
  background-color: var(--indigo);
  color: #FFF8EE;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(44, 95, 124, 0.25);
}

/* ==========================================================================
   Hero 主视觉区 (2-Column)
   ========================================================================== */
.hero-section {
  padding: 60px 0 70px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-light);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 40px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background-color: #EFE9DA;
  border: 1px solid var(--border-light);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-sub);
  margin-bottom: 20px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background-color: var(--cinnabar);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.15;
  color: var(--fg-main);
  margin-bottom: 16px;
}

.hero-title .text-cinnabar {
  color: var(--cinnabar);
  position: relative;
  display: inline-block;
}

.hero-title-en {
  font-family: var(--font-sans);
  font-size: 16px;
  font-style: italic;
  color: var(--fg-mute);
  margin-top: 6px;
  display: block;
  font-weight: 400;
}

.hero-lead {
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 1.8;
  color: var(--fg-sub);
  margin-bottom: 30px;
  max-width: 580px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-meta-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding-top: 24px;
  border-top: 1px dashed var(--border-light);
}

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

.meta-main {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--fg-main);
}

.meta-sub {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--fg-mute);
  font-style: italic;
}

/* ==========================================================================
   3D 交互风车舞台 (Interactive 3D Windmill)
   ========================================================================== */
.windmill-stage-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.stage-3d {
  width: 520px;
  height: 520px;
  max-width: 100%;
  position: relative;
  background-color: var(--bg-soft);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-restrained);
  perspective: 1200px;
  perspective-origin: 50% 40%;
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(90, 82, 71, 0.12);
  cursor: grab;
  user-select: none;
  background-image: 
    radial-gradient(circle at 30% 30%, rgba(200, 69, 60, 0.08) 0%, transparent 60%),
    radial-gradient(circle at 75% 75%, rgba(44, 95, 124, 0.08) 0%, transparent 60%);
}

.stage-3d:active {
  cursor: grabbing;
}

/* 水印大字 */
.watermark-feng {
  position: absolute;
  top: 10px;
  right: 20px;
  font-family: var(--font-brush);
  font-size: 220px;
  line-height: 1;
  color: rgba(200, 69, 60, 0.08);
  pointer-events: none;
  z-index: 1;
}

.watermark-yun {
  position: absolute;
  bottom: 10px;
  left: 20px;
  font-family: var(--font-brush);
  font-size: 180px;
  line-height: 1;
  color: rgba(44, 95, 124, 0.08);
  pointer-events: none;
  z-index: 1;
}

/* 祥云漂浮 */
.floating-cloud {
  position: absolute;
  pointer-events: none;
  filter: blur(3px);
  opacity: 0.7;
  z-index: 2;
}

.floating-cloud svg {
  fill: #FFFFFF;
}

.cloud-1 {
  width: 130px;
  top: 60px;
  left: -20px;
  animation: cloud-drift-1 20s ease-in-out infinite alternate;
}

.cloud-2 {
  width: 170px;
  bottom: 110px;
  right: -30px;
  animation: cloud-drift-2 25s ease-in-out infinite alternate;
}

@keyframes cloud-drift-1 {
  0% { transform: translateX(0) translateY(0); }
  100% { transform: translateX(70px) translateY(18px); }
}

@keyframes cloud-drift-2 {
  0% { transform: translateX(0) translateY(0); }
  100% { transform: translateX(-80px) translateY(-22px); }
}

/* 奔马剪影 SVG */
.horse-silhouette {
  position: absolute;
  bottom: 25px;
  right: 25px;
  width: 100px;
  height: 80px;
  opacity: 0.4;
  pointer-events: none;
  z-index: 2;
}

/* 3D 场景容器 */
.scene {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
  transform: translate(-50%, -50%) rotateX(-12deg) rotateY(0deg);
  z-index: 3;
}

/* 支撑木杆 */
.pole {
  position: absolute;
  left: -8px;
  top: -40px;
  width: 16px;
  height: 230px;
  background: linear-gradient(to right, #6B5230, #8B6840 50%, #6B5230);
  border-radius: 3px;
  box-shadow: 4px 6px 15px rgba(0, 0, 0, 0.25);
  transform-style: preserve-3d;
}

.pole-base {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 24px;
  background: linear-gradient(to top, #47351c, #6B5230);
  border-radius: var(--radius-restrained);
  border-top: 1px solid #8B6840;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

/* 风车轮盘容器 */
.blades-container {
  position: absolute;
  left: 0;
  top: -30px;
  width: 280px;
  height: 280px;
  margin-left: -140px;
  margin-top: -140px;
  transform-style: preserve-3d;
  animation: spin-blades 8s linear infinite;
}

@keyframes spin-blades {
  0% { transform: rotateZ(0deg); }
  100% { transform: rotateZ(360deg); }
}

/* 四片扇叶 */
.blade {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 140px;
  margin-left: -10px;
  background: linear-gradient(to bottom, var(--cinnabar) 0%, var(--cinnabar-deep) 100%);
  border-radius: 0 0 10px 10px;
  transform-origin: 10px 0;
  box-shadow: 2px 4px 10px rgba(155, 45, 38, 0.4);
}

.blade-0   { transform: rotate(0deg); }
.blade-90  { transform: rotate(90deg); }
.blade-180 { transform: rotate(180deg); }
.blade-270 { transform: rotate(270deg); }

/* 扇叶金饰圆圈 */
.blade-tip {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 28px;
  background-color: var(--ochre-gold);
  border: 2px solid var(--cinnabar-deep);
  border-radius: 50%;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
}

.blade-tip::after {
  content: '';
  width: 8px;
  height: 8px;
  background-color: var(--cinnabar-deep);
  border-radius: 50%;
}

/* 中心轮毂 */
.hub {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 32px;
  height: 32px;
  margin-left: -16px;
  margin-top: -16px;
  background: radial-gradient(circle, var(--ochre-gold) 40%, var(--ochre-dark) 100%);
  border: 2px solid #FFF8EE;
  border-radius: 50%;
  box-shadow: 
    inset 0 2px 4px rgba(255, 255, 255, 0.4),
    0 4px 12px rgba(0, 0, 0, 0.4);
  z-index: 5;
}

/* 操作提示小浮层 */
.stage-hint {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background-color: rgba(245, 241, 232, 0.88);
  border: 1px solid var(--border-light);
  padding: 6px 12px;
  font-size: 12px;
  color: var(--fg-sub);
  border-radius: var(--radius-restrained);
  pointer-events: none;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   通用 Section 头部装饰标签
   「壹 · 產品特性」双横线装饰
   ========================================================================== */
.section-wrapper {
  padding: 85px 0;
  border-bottom: 1px solid var(--border-light);
}

.section-head {
  text-align: center;
  margin-bottom: 50px;
}

.section-num-tag {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.section-num-tag .line {
  width: 48px;
  height: 1px;
  background-color: var(--border-dark);
}

.section-tag-text {
  font-family: var(--font-brush);
  font-size: 26px;
  color: var(--cinnabar);
  letter-spacing: 0.1em;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 46px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--fg-main);
  line-height: 1.25;
}

/* ==========================================================================
   产品核心优势 (Features 3-Col Grid)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-restrained);
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(90, 82, 71, 0.04);
}

/* Hover 展现左侧朱红装饰条由上至下伸长 */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background-color: var(--cinnabar);
  transition: height 0.35s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-dark);
  box-shadow: 0 10px 24px rgba(90, 82, 71, 0.1);
}

.feature-card:hover::before {
  height: 100%;
}

.feature-num {
  font-family: var(--font-brush);
  font-size: 34px;
  color: var(--ochre-gold);
  line-height: 1;
  margin-bottom: 16px;
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  background-color: rgba(200, 69, 60, 0.08);
  border: 1px solid rgba(200, 69, 60, 0.2);
  border-radius: var(--radius-restrained);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cinnabar);
  margin-bottom: 20px;
}

.feature-icon-wrapper svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.feature-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--fg-main);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-sub);
}

/* ==========================================================================
   流媒体与 AI 支持图卡 (Streaming & AI Support)
   ========================================================================== */
.media-ai-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-top: 10px;
}

.media-ai-card {
  background-color: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-restrained);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 16px rgba(90, 82, 71, 0.05);
}

.media-ai-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  border-bottom: 1px dashed var(--border-light);
  padding-bottom: 16px;
}

.media-ai-tag {
  font-family: var(--font-brush);
  font-size: 22px;
  color: var(--cinnabar);
}

.app-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.app-chip {
  background-color: #FFFDF9;
  border: 1px solid var(--border-light);
  padding: 8px 14px;
  border-radius: var(--radius-restrained);
  font-size: 14px;
  font-weight: 600;
  color: var(--fg-main);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.app-chip .status-dot {
  width: 6px;
  height: 6px;
  background-color: #27ae60;
  border-radius: 50%;
}

/* ==========================================================================
   套餐价格对比表 (Pricing)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background-color: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-restrained);
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 28px rgba(90, 82, 71, 0.12);
}

/* 推荐主推款高亮 */
.pricing-card.featured {
  border: 2px solid var(--cinnabar);
  background-color: #FFFDF9;
  box-shadow: 0 10px 30px rgba(200, 69, 60, 0.15);
}

.featured-stamp {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 46px;
  height: 46px;
  font-size: 16px;
  letter-spacing: 0.05em;
}

.plan-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--fg-main);
  margin-bottom: 6px;
}

.plan-price-box {
  margin: 20px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-currency {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--cinnabar);
}

.plan-amount {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 900;
  color: var(--cinnabar);
  line-height: 1;
}

.plan-period {
  font-size: 14px;
  color: var(--fg-mute);
}

.plan-divider {
  border: none;
  border-top: 1px dashed var(--border-light);
  margin: 20px 0;
}

.plan-features-list {
  list-style: none;
  margin-bottom: 30px;
}

.plan-features-list li {
  font-size: 15px;
  line-height: 2;
  color: var(--fg-sub);
  display: flex;
  align-items: center;
  gap: 8px;
}

.plan-features-list li::before {
  content: '◈';
  color: var(--cinnabar);
  font-size: 12px;
}

/* ==========================================================================
   节点覆盖与网络规模 (Nodes Stat Band)
   ========================================================================== */
.nodes-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.node-stat-card {
  background-color: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-restrained);
  padding: 30px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* 底部 2px 朱红装饰条 */
.node-stat-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--cinnabar);
}

.stat-value {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 900;
  color: var(--fg-main);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--fg-sub);
}

.nodes-chip-container {
  background-color: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-restrained);
  padding: 26px;
  text-align: center;
}

.nodes-chip-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--fg-main);
  margin-bottom: 16px;
}

.nodes-chip-wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.node-pill {
  background-color: #FFFDF9;
  border: 1px solid var(--border-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  color: var(--fg-sub);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.node-pill .flag-icon {
  font-size: 16px;
}

/* ==========================================================================
   用户口碑评价 (Testimonials)
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.testimonial-card {
  background-color: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-restrained);
  padding: 36px 32px;
  position: relative;
  box-shadow: 0 4px 16px rgba(90, 82, 71, 0.05);
}

.testimonial-card .quote-mark {
  position: absolute;
  top: 12px;
  right: 24px;
  font-family: var(--font-brush);
  font-size: 72px;
  line-height: 1;
  color: var(--cinnabar);
  opacity: 0.2;
  user-select: none;
}

.testimonial-text {
  font-size: 16px;
  line-height: 1.85;
  color: var(--fg-main);
  margin-bottom: 24px;
  position: relative;
  z-index: 2;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  background-color: var(--cinnabar);
  color: #FFF8EE;
  font-family: var(--font-brush);
  font-size: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(200, 69, 60, 0.3);
}

.author-info-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--fg-main);
}

.author-info-role {
  font-size: 13px;
  color: var(--fg-mute);
}

/* ==========================================================================
   常见问题 FAQ Accordion
   ========================================================================== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background-color: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-restrained);
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  background: none;
  border: none;
  outline: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--fg-main);
}

.faq-icon {
  font-size: 22px;
  color: var(--cinnabar);
  font-weight: 400;
  transition: transform 0.25s ease;
  line-height: 1;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 28px;
  background-color: #FFFDF9;
  border-top: 1px dashed transparent;
}

.faq-item.active {
  border-color: var(--border-dark);
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 20px 28px 24px;
  border-top-color: var(--border-light);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--fg-sub);
  margin-bottom: 8px;
}

/* ==========================================================================
   页脚 Footer (深墨大报质感，严格仅保留四个规定标题)
   ========================================================================== */
.site-footer {
  background-color: var(--bg-deep);
  color: #C0B59D;
  padding: 60px 0 40px;
  border-top: 4px solid var(--cinnabar);
}

.footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 35px;
}

.footer-brand-title {
  font-family: var(--font-brush);
  font-size: 32px;
  color: var(--ochre-gold);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.footer-brand-slogan {
  font-size: 14px;
  color: #8A8270;
}

.footer-nav-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 36px;
  padding: 24px 0;
  border-top: 1px solid #333333;
  border-bottom: 1px solid #333333;
  margin-bottom: 30px;
}

.footer-nav-link {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: #DDD5C7;
  letter-spacing: 0.04em;
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-restrained);
  transition: all 0.25s ease;
}

.footer-nav-link:hover {
  color: var(--ochre-gold);
  border-color: rgba(184, 153, 104, 0.4);
  background-color: rgba(255, 255, 255, 0.03);
}

.footer-copyright {
  text-align: center;
  font-size: 13px;
  color: #706859;
  letter-spacing: 0.02em;
}

/* ==========================================================================
   独立文章页/关于/条款通用文章排版
   ========================================================================== */
.article-header {
  padding: 60px 0 30px;
  border-bottom: 1px solid var(--border-light);
  background-color: var(--bg-soft);
}

.article-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--fg-mute);
  margin-bottom: 16px;
}

.article-title {
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 900;
  color: var(--fg-main);
  line-height: 1.3;
  margin-bottom: 14px;
}

.article-meta {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--fg-mute);
}

.article-content {
  padding: 50px 0 80px;
  max-width: 860px;
  margin: 0 auto;
}

.article-content h2 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 800;
  color: var(--fg-main);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.article-content h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--fg-main);
  margin: 28px 0 12px;
}

.article-content p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--fg-sub);
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin: 16px 0 24px 24px;
  color: var(--fg-sub);
}

.article-content li {
  line-height: 1.85;
  margin-bottom: 8px;
}

.article-content a.pbn-link {
  color: var(--cinnabar);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-content a.pbn-link:hover {
  color: var(--cinnabar-deep);
  background-color: rgba(200, 69, 60, 0.08);
}

.article-content blockquote {
  background-color: var(--bg-soft);
  border-left: 4px solid var(--cinnabar);
  padding: 16px 20px;
  margin: 24px 0;
  font-style: italic;
  color: var(--fg-main);
}

/* 资讯列表网格 */
.news-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 30px;
}

.news-card-item {
  background-color: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-restrained);
  padding: 28px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.news-card-item:hover {
  transform: translateY(-4px);
  border-color: var(--cinnabar);
  box-shadow: 0 8px 24px rgba(90, 82, 71, 0.1);
}

.news-card-tag {
  display: inline-block;
  padding: 3px 10px;
  background-color: rgba(200, 69, 60, 0.1);
  color: var(--cinnabar);
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-restrained);
  margin-bottom: 12px;
  width: fit-content;
}

.news-card-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--fg-main);
  line-height: 1.4;
  margin-bottom: 10px;
}

.news-card-desc {
  font-size: 14px;
  color: var(--fg-sub);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* ==========================================================================
   响应式媒体查询 (@media) - 完美单栏适配手机
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

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

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

  .hero-title {
    font-size: 48px;
  }

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

  .media-ai-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .news-cards-grid {
    grid-template-columns: 1fr;
  }

  .stage-3d {
    width: 440px;
    height: 440px;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none; /* 移动端精简 */
  }

  .hero-title {
    font-size: 38px;
  }

  .section-title {
    font-size: 32px;
  }

  .stage-3d {
    width: 320px;
    height: 320px;
  }

  .watermark-feng {
    font-size: 140px;
  }

  .watermark-yun {
    font-size: 120px;
  }

  .blades-container {
    width: 220px;
    height: 220px;
    margin-left: -110px;
    margin-top: -110px;
  }

  .blade {
    height: 110px;
  }

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

  .btn-cta, .btn-secondary {
    width: 100%;
    padding: 14px 20px;
    font-size: 16px;
  }

  .footer-nav-bar {
    gap: 16px;
    flex-direction: column;
  }
}