/* ==========================================================================
   中国区VPN (zoogvpn.best) - 瑞士国际主义排版系统 (Swiss International Typographic Style)
   Palette: 米白 #FAFAF8 | 近黑 #141414 | 国际橙 #FF4D00 | 发丝线 #E2E2DC / #141414
   Architecture: Zero JavaScript, 100% Pure CSS, Ultra-fast load
   ========================================================================== */

:root {
  --bg-color: #FAFAF8;
  --text-primary: #141414;
  --text-secondary: #5A5A55;
  --text-muted: #888880;
  --accent-orange: #FF4D00;
  --hairline: #E5E5DF;
  --hairline-dark: #141414;
  --card-bg: #FFFFFF;
  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "Roboto Mono", "Menlo", monospace;
  --max-width: 1240px;
  --spacing-unit: 8px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  line-height: 1.6;
  background-color: var(--bg-color);
  color: var(--text-primary);
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

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

/* 瑞士国际主义栅格与版心容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 顶部公告与导航栏 */
.header-wrapper {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(250, 250, 248, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hairline);
}

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

.logo-area {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.logo-text {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.logo-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  background-color: var(--accent-orange);
  border-radius: 50%;
  margin-left: 2px;
}

.logo-domain {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  text-transform: uppercase;
}

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

.nav-item a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  position: relative;
  padding: 6px 0;
}

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

.nav-item.highlight-nav a {
  color: var(--accent-orange);
  font-weight: 600;
}

.nav-item.highlight-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent-orange);
}

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

/* 按钮工艺标准 - 瑞士排版纯色与橙色 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 0px; /* 瑞士现代主义拒绝多余圆角，遵循纯粹几何与秩序感 */
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--text-primary);
  color: #FFFFFF;
  border: 1px solid var(--text-primary);
}

.btn-primary:hover {
  background-color: var(--accent-orange);
  border-color: var(--accent-orange);
  color: #FFFFFF;
  transform: translateY(-1px);
}

.btn-orange {
  background-color: var(--accent-orange);
  color: #FFFFFF;
  border: 1px solid var(--accent-orange);
}

.btn-orange:hover {
  background-color: #E04400;
  border-color: #E04400;
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--hairline-dark);
}

.btn-outline:hover {
  background-color: var(--text-primary);
  color: #FFFFFF;
}

/* 醒目主视觉区 (Hero Section) */
.hero-section {
  padding: 80px 0 60px 0;
  border-bottom: 1px solid var(--hairline);
}

.hero-meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.hero-meta-tag .tag-badge {
  background-color: var(--text-primary);
  color: #FFFFFF;
  padding: 2px 8px;
  font-weight: 600;
}

.hero-headline {
  font-size: clamp(38px, 6.2vw, 76px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.hero-headline .orange-period {
  color: var(--accent-orange);
  display: inline-block;
}

.hero-editorial {
  font-size: 20px;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 820px;
  font-weight: 400;
  margin-bottom: 40px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.hero-note {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-note svg {
  color: #10B981;
}

/* 技术规格表 (按行排，纯CSS hover 缩进 + 橙色左竖线工艺) */
.specs-panel {
  border: 1px solid var(--hairline-dark);
  background-color: #FFFFFF;
  margin-top: 20px;
}

.specs-header {
  padding: 14px 24px;
  background-color: #F0F0EC;
  border-bottom: 1px solid var(--hairline);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.spec-row {
  display: grid;
  grid-template-columns: 160px 1fr 140px;
  align-items: center;
  padding: 18px 24px;
  border-bottom: 1px solid var(--hairline);
  position: relative;
  transition: all 0.25s ease;
  background-color: #FFFFFF;
  border-left: 0px solid var(--accent-orange);
}

.spec-row:last-child {
  border-bottom: none;
}

.spec-row:hover {
  padding-left: 36px;
  border-left: 5px solid var(--accent-orange);
  background-color: #FCFCFB;
}

.spec-label {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.spec-value {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
}

.spec-status {
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
  color: var(--accent-orange);
  font-weight: 600;
}

/* 核心优势卡片区 (3个图文卡片) */
.section {
  padding: 90px 0;
  border-bottom: 1px solid var(--hairline);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-orange);
  margin-bottom: 12px;
  display: block;
  font-weight: 700;
}

.section-title {
  font-size: clamp(28px, 3.8vw, 44px);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 680px;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background-color: #FFFFFF;
  border: 1px solid var(--hairline-dark);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(20, 20, 20, 0.06);
  border-color: var(--accent-orange);
}

.feature-num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-orange);
  margin-bottom: 24px;
  display: block;
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  background-color: #FAFAF8;
  border: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.feature-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.feature-footer-tag {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* 流媒体与 AI 支持图卡 */
.unlock-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.unlock-box {
  background: #FFFFFF;
  border: 1px solid var(--hairline-dark);
  padding: 36px;
}

.unlock-category {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline);
}

.unlock-category-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.unlock-category-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  background-color: var(--accent-orange);
  color: #FFFFFF;
  font-weight: 700;
}

.service-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.service-pill {
  border: 1px solid var(--hairline);
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  background-color: #FAFAF8;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.service-pill:hover {
  background-color: var(--text-primary);
  color: #FFFFFF;
  border-color: var(--text-primary);
}

.service-pill .pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #10B981;
}

/* 索引 Index 编号列表 (hover 箭头滑出) */
.index-section {
  padding: 80px 0;
  border-bottom: 1px solid var(--hairline);
}

.index-grid {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--hairline-dark);
  background-color: #FFFFFF;
}

.index-item {
  display: grid;
  grid-template-columns: 100px 240px 1fr 60px;
  align-items: center;
  padding: 26px 32px;
  border-bottom: 1px solid var(--hairline);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  color: inherit;
  background-color: #FFFFFF;
}

.index-item:last-child {
  border-bottom: none;
}

.index-item:hover {
  background-color: #FCFCFB;
  padding-left: 42px;
}

.index-num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--accent-orange);
}

.index-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.index-desc {
  font-size: 14px;
  color: var(--text-secondary);
  padding-right: 20px;
}

.index-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-size: 18px;
  color: var(--text-muted);
  transform: translateX(0);
  transition: transform 0.25s ease, color 0.25s ease;
}

.index-item:hover .index-arrow {
  transform: translateX(8px);
  color: var(--accent-orange);
}

/* 真实套餐价格对比表 */
.pricing-section {
  padding: 90px 0;
  border-bottom: 1px solid var(--hairline);
  background-color: #FAFAF8;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.pricing-card {
  background-color: #FFFFFF;
  border: 1px solid var(--hairline-dark);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform 0.2s ease;
}

.pricing-card.popular {
  border: 2px solid var(--accent-orange);
  background-color: #FFFFFF;
}

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

.popular-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background-color: var(--accent-orange);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  font-weight: 700;
  text-transform: uppercase;
}

.pricing-plan-name {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.pricing-plan-desc {
  font-size: 12px;
  color: var(--text-muted);
  min-height: 36px;
  margin-bottom: 20px;
}

.pricing-cost {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--hairline);
}

.currency-symbol {
  font-size: 20px;
  font-weight: 700;
  vertical-align: top;
  color: var(--text-primary);
}

.price-num {
  font-size: 42px;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
}

.price-cycle {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.price-discount-tag {
  display: inline-block;
  background-color: #F0FDF4;
  color: #166534;
  border: 1px solid #BBF7D0;
  font-size: 11px;
  padding: 2px 6px;
  font-weight: 600;
  margin-top: 6px;
}

.plan-features {
  list-style: none;
  margin-bottom: 30px;
  flex-grow: 1;
}

.plan-feature-item {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 8px 0;
  border-bottom: 1px dashed var(--hairline);
  display: flex;
  align-items: center;
  gap: 8px;
}

.plan-feature-item svg {
  color: var(--accent-orange);
  flex-shrink: 0;
}

/* 客户真实评价模块 (AggregateRating 4.9分，580+真实口碑) */
.reviews-section {
  padding: 90px 0;
  border-bottom: 1px solid var(--hairline);
}

.rating-header-bar {
  display: flex;
  align-items: baseline;
  gap: 20px;
  margin-bottom: 40px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--hairline);
}

.rating-score {
  font-size: 54px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

.rating-stars {
  color: var(--accent-orange);
  font-size: 20px;
  letter-spacing: 2px;
}

.rating-stats {
  font-size: 14px;
  color: var(--text-secondary);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background-color: #FFFFFF;
  border: 1px solid var(--hairline-dark);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-content {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 20px;
  position: relative;
}

.review-author {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--hairline);
}

.author-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.author-avatar {
  width: 36px;
  height: 36px;
  background-color: var(--text-primary);
  color: #FFFFFF;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-family: var(--font-mono);
}

.author-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}

.author-role {
  font-size: 11px;
  color: var(--text-muted);
}

.review-verified {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #10B981;
  text-transform: uppercase;
  font-weight: 600;
}

/* 常见问题解答 FAQ */
.faq-section {
  padding: 90px 0;
  border-bottom: 1px solid var(--hairline);
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--hairline-dark);
  background-color: #FFFFFF;
  margin-top: 36px;
}

.faq-item {
  border-bottom: 1px solid var(--hairline);
  padding: 28px 32px;
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-size: 17px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.faq-q-mark {
  font-family: var(--font-mono);
  color: var(--accent-orange);
  font-size: 15px;
}

.faq-answer {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  padding-left: 28px;
}

/* 黑色通栏 CTA 区域 ("黄金档, 不等人.") */
.black-cta-strip {
  background-color: #141414;
  color: #FAFAF8;
  padding: 80px 0;
  border-bottom: 1px solid var(--hairline-dark);
}

.black-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.black-cta-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #FFFFFF;
}

.black-cta-sub {
  font-size: 16px;
  color: #A0A09B;
  margin-top: 14px;
  max-width: 600px;
  line-height: 1.6;
}

.black-cta-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
  flex-shrink: 0;
}

/* 页脚 Footer - 严格仅保留四个规定标题，target="_blank" */
.site-footer {
  background-color: var(--bg-color);
  padding: 48px 0;
  border-top: 1px solid var(--hairline);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-logo {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.footer-copy {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

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

.footer-links-four a {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.footer-links-four a:hover {
  color: var(--accent-orange);
  border-bottom-color: var(--accent-orange);
}

/* ==========================================================================
   移动端响应式适配 (@media 媒体查询)
   ========================================================================== */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .site-nav {
    height: auto;
    padding: 16px 0;
    flex-direction: column;
    gap: 16px;
  }

  .nav-menu {
    gap: 18px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-actions {
    width: 100%;
    justify-content: center;
  }

  .nav-actions .btn {
    width: 100%;
    padding: 14px;
  }

  .hero-section {
    padding: 40px 0;
  }

  .hero-headline {
    font-size: 36px;
  }

  .hero-editorial {
    font-size: 17px;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta-group .btn {
    width: 100%;
    padding: 16px;
    font-size: 16px;
  }

  .spec-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px;
  }

  .spec-row:hover {
    padding-left: 20px;
  }

  .spec-status {
    text-align: left;
  }

  .features-grid,
  .unlock-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .index-item {
    grid-template-columns: 40px 1fr;
    gap: 12px;
    padding: 20px;
  }

  .index-desc {
    grid-column: 2 / 3;
    padding-right: 0;
  }

  .index-arrow {
    display: none;
  }

  .black-cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .black-cta-actions {
    width: 100%;
  }

  .black-cta-actions .btn {
    width: 100%;
    padding: 16px;
    text-align: center;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

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

  .faq-answer {
    padding-left: 0;
  }
}