/* ==========================================================================
   云上极速 (Cloud Velocity) - Kinetic Typography Engine & Master Stylesheet
   配色体系：黑白纯色基底 + 电光高能黄 (#FFE600)
   字体方案：Bebas Neue (主视觉与大排版) + Space Mono (数据与细节) + 汉仪/苹方黑体回退
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Noto+Sans+SC:wght@400;600;800;900&display=swap');

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #121212;
  --bg-card: #181818;
  --text-main: #f5f5f5;
  --text-muted: #888888;
  --text-dim: #555555;
  --accent-yellow: #FFE600;
  --accent-yellow-glow: rgba(255, 230, 0, 0.35);
  --border-light: rgba(255, 255, 255, 0.12);
  --border-yellow: rgba(255, 230, 0, 0.4);
  --font-display: 'Bebas Neue', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'Space Mono', 'Noto Sans SC', monospace;
  --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 链接基础样式 */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ==========================================================================
   自定义磁吸光标效果 (Desktop Only)
   ========================================================================== */
.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  border: 2px solid var(--accent-yellow);
  border-radius: 50%;
  pointer-events: none;
  z-index: 99999;
  transform: translate(-50%, -50%);
  transition: width 0.2s ease, height 0.2s ease, background-color 0.2s ease, transform 0.05s ease;
  mix-blend-mode: difference;
}

.custom-cursor.active {
  width: 50px;
  height: 50px;
  background-color: rgba(255, 230, 0, 0.2);
  border-color: #ffffff;
}

/* ==========================================================================
   导航系统 (Header & Nav)
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: transform 0.3s ease, background 0.3s ease;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 2px;
  font-weight: 900;
  color: #ffffff;
  text-transform: uppercase;
}

.brand-logo .logo-dot {
  width: 12px;
  height: 12px;
  background-color: var(--accent-yellow);
  display: inline-block;
  box-shadow: 0 0 12px var(--accent-yellow-glow);
  transform: rotate(45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

.nav-link {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: #cccccc;
  position: relative;
  padding: 6px 0;
  transition: color 0.2s;
}

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

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

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

.nav-link.highlight {
  color: var(--accent-yellow);
  border: 1px solid var(--border-yellow);
  padding: 6px 14px;
  border-radius: 4px;
  background: rgba(255, 230, 0, 0.05);
}

.nav-link.highlight:hover {
  background: var(--accent-yellow);
  color: #000000;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-yellow);
  color: #000000;
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.95rem;
  padding: 10px 22px;
  border-radius: 4px;
  border: 2px solid var(--accent-yellow);
  cursor: pointer;
  box-shadow: 0 0 15px rgba(255, 230, 0, 0.2);
  transition: all 0.25s ease;
}

.header-cta:hover {
  background: transparent;
  color: var(--accent-yellow);
  box-shadow: 0 0 25px rgba(255, 230, 0, 0.5);
  transform: translateY(-2px);
}

/* 移动端汉堡菜单 */
.menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #ffffff;
  margin: 5px 0;
  transition: 0.3s;
}

/* ==========================================================================
   Kinetic Hero 区域
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 130px 5% 70px;
  text-align: center;
  background: radial-gradient(circle at 50% 30%, #1c1c1c 0%, #0a0a0a 70%);
  overflow: hidden;
}

.hero-glow-bg {
  position: absolute;
  top: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 230, 0, 0.12) 0%, rgba(0, 0, 0, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
  filter: blur(60px);
  z-index: 1;
}

.hero-tagline-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  border-radius: 50px;
  margin-bottom: 24px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 1px;
  color: var(--accent-yellow);
}

.hero-title-kinetic {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 9vw, 8.5rem);
  line-height: 0.95;
  font-weight: 900;
  letter-spacing: 2px;
  color: #ffffff;
  text-transform: uppercase;
  margin-bottom: 20px;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title-kinetic .word-highlight {
  color: var(--accent-yellow);
  display: inline-block;
  text-shadow: 0 0 35px rgba(255, 230, 0, 0.45);
  letter-spacing: 4px;
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2.8vw, 2rem);
  font-weight: 700;
  color: #e0e0e0;
  margin-bottom: 18px;
  z-index: 2;
  letter-spacing: 1px;
}

.hero-description {
  max-width: 780px;
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0 auto 36px;
  z-index: 2;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  z-index: 2;
}

/* 主 CTA 磁吸动效按钮 */
.btn-magnetic {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 36px;
  font-size: 1.1rem;
  font-weight: 800;
  border-radius: 4px;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary-cta {
  background: var(--accent-yellow);
  color: #000000;
  border: 2px solid var(--accent-yellow);
  box-shadow: 0 8px 30px rgba(255, 230, 0, 0.35);
}

.btn-primary-cta:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 12px 40px rgba(255, 230, 0, 0.6);
  background: #ffffff;
  border-color: #ffffff;
}

/* 博客权重传递外链按钮（严格 Dofollow） */
.btn-secondary-blog {
  background: rgba(255, 255, 255, 0.04);
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
}

.btn-secondary-blog:hover {
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
  background: rgba(255, 230, 0, 0.08);
  transform: translateY(-4px) scale(1.03);
}

/* 动效数据展示 */
.hero-metrics {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 55px;
  z-index: 2;
  border-top: 1px solid var(--border-light);
  padding-top: 35px;
  flex-wrap: wrap;
}

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

.metric-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  color: var(--accent-yellow);
  line-height: 1;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ==========================================================================
   跑马灯文字带 (Kinetic Marquee Band)
   ========================================================================== */
.marquee-band {
  background: var(--accent-yellow);
  color: #000000;
  overflow: hidden;
  white-space: nowrap;
  padding: 16px 0;
  position: relative;
  z-index: 5;
  border-top: 2px solid #000000;
  border-bottom: 2px solid #000000;
  transform: rotate(-1deg) scale(1.02);
  margin: 20px 0;
}

.marquee-inner {
  display: inline-flex;
  animation: marquee-roll 22s linear infinite;
}

.marquee-item {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: 2px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.marquee-item::after {
  content: '✦';
  font-size: 1.2rem;
}

@keyframes marquee-roll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ==========================================================================
   通栏布局容器
   ========================================================================== */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 100px 0;
  position: relative;
}

.section-head {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-yellow);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  line-height: 1.1;
  letter-spacing: 1px;
  color: #ffffff;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 14px auto 0;
}

/* ==========================================================================
   产品核心优势介绍 (3个图文卡片)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  transition: background 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-yellow);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
}

.feature-card:hover::before {
  background: var(--accent-yellow);
}

.feature-badge-num {
  font-family: var(--font-display);
  font-size: 2.8rem;
  color: var(--text-dim);
  line-height: 1;
  margin-bottom: 20px;
  transition: color 0.3s;
}

.feature-card:hover .feature-badge-num {
  color: var(--accent-yellow);
}

.feature-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

.feature-visual {
  margin-top: 24px;
  padding: 16px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-yellow);
}

/* ==========================================================================
   流媒体与 AI 支持图卡
   ========================================================================== */
.support-section {
  background: #0f0f0f;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.support-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.support-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 230, 0, 0.1);
  border: 1px solid var(--accent-yellow);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--accent-yellow);
}

.support-card-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
}

.support-badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.support-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #202020;
  border: 1px solid var(--border-light);
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #e0e0e0;
}

.support-badge.active {
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
  background: rgba(255, 230, 0, 0.05);
}

/* ==========================================================================
   套餐价格对比表 (Pricing Matrix)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 45px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.3);
}

.pricing-card.featured {
  background: #1c1c1c;
  border: 2px solid var(--accent-yellow);
  box-shadow: 0 0 35px rgba(255, 230, 0, 0.15);
  transform: scale(1.04);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.06) translateY(-4px);
}

.popular-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-yellow);
  color: #000000;
  font-weight: 900;
  font-size: 0.8rem;
  letter-spacing: 1px;
  padding: 4px 16px;
  border-radius: 20px;
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  min-height: 44px;
  margin-bottom: 24px;
}

.plan-price-wrapper {
  margin-bottom: 30px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-currency {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent-yellow);
}

.price-value {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.price-period {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-left: 6px;
}

.plan-features-list {
  list-style: none;
  margin-bottom: 36px;
  flex-grow: 1;
}

.plan-features-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: #d0d0d0;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.plan-features-list li .check-icon {
  color: var(--accent-yellow);
  font-weight: 900;
  font-size: 1.1rem;
}

.btn-pricing-cta {
  width: 100%;
  padding: 14px 20px;
  text-align: center;
  font-size: 1.05rem;
  font-weight: 800;
  border-radius: 4px;
  display: inline-block;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-pricing-default {
  background: transparent;
  color: #ffffff;
  border: 1px solid var(--border-light);
}

.btn-pricing-default:hover {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
}

.btn-pricing-featured {
  background: var(--accent-yellow);
  color: #000000;
  border: 2px solid var(--accent-yellow);
}

.btn-pricing-featured:hover {
  background: #ffffff;
  border-color: #ffffff;
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   用户评价 (User Reviews)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-rating {
  color: var(--accent-yellow);
  font-size: 1.2rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.98rem;
  color: #dcdcdc;
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 16px;
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #252525;
  border: 1px solid var(--accent-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--accent-yellow);
}

.reviewer-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: #ffffff;
}

.reviewer-tag {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   常见问题解答 (FAQ)
   ========================================================================== */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.25s;
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.3);
}

.faq-summary {
  padding: 22px 28px;
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon-arrow {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--accent-yellow);
  transition: transform 0.3s ease;
}

details[open] .faq-icon-arrow {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 28px 24px;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 8px;
}

/* ==========================================================================
   页脚规范 (只保留4个标题，点击新页面展示)
   ========================================================================== */
.site-footer {
  background: #050505;
  border-top: 1px solid var(--border-light);
  padding: 60px 0 40px;
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 36px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.footer-nav-link {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.footer-nav-link:hover {
  color: var(--accent-yellow);
  border-color: var(--border-yellow);
  background: rgba(255, 230, 0, 0.05);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

/* ==========================================================================
   文章详情页与内页专属样式
   ========================================================================== */
.article-container {
  max-width: 900px;
  margin: 120px auto 80px;
  padding: 0 24px;
}

.article-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 30px;
  margin-bottom: 40px;
}

.article-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.3;
  color: #ffffff;
  margin-bottom: 16px;
}

.article-meta-bar {
  display: flex;
  gap: 20px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.article-content {
  font-size: 1.1rem;
  line-height: 1.85;
  color: #d5d5d5;
}

.article-content h2 {
  font-size: 1.8rem;
  color: #ffffff;
  margin: 45px 0 18px;
  border-left: 4px solid var(--accent-yellow);
  padding-left: 14px;
}

.article-content h3 {
  font-size: 1.4rem;
  color: #ffffff;
  margin: 32px 0 14px;
}

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

.article-content ul, .article-content ol {
  margin: 0 0 24px 24px;
}

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

/* 自然植入的外链/内链卡片式样式 */
.dofollow-insert-box {
  background: #141414;
  border: 1px solid var(--border-yellow);
  border-radius: 6px;
  padding: 20px 24px;
  margin: 30px 0;
}

.dofollow-insert-box a {
  color: var(--accent-yellow);
  font-weight: 700;
  text-decoration: underline;
  font-size: 1.1rem;
}

.dofollow-insert-box a:hover {
  color: #ffffff;
}

/* ==========================================================================
   响应式媒体查询 (@media 移动端完美适配)
   ========================================================================== */
@media (max-width: 992px) {
  .features-grid,
  .pricing-grid,
  .reviews-grid,
  .support-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .pricing-card.featured {
    transform: none;
  }

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

  .hero-title-kinetic {
    font-size: 3.8rem;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 66px;
    padding: 0 16px;
  }

  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 66px;
    left: 0;
    right: 0;
    background: #0f0f0f;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-light);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    gap: 20px;
  }

  .site-nav.open {
    transform: translateY(0);
  }

  .nav-links {
    flex-direction: column;
    gap: 18px;
    width: 100%;
    text-align: center;
  }

  .header-cta {
    width: 100%;
  }

  .hero-section {
    padding: 100px 16px 50px;
  }

  .hero-title-kinetic {
    font-size: 2.8rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn-magnetic {
    width: 100%;
    min-height: 52px; /* 适合手指点击 */
  }

  .hero-metrics {
    gap: 24px;
  }

  .metric-item {
    width: 45%;
  }

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

  .custom-cursor {
    display: none;
  }
}