/* ==========================================================================
   一枝红杏官网 (yzhxjc.my) - 核心样式表
   主题：暗黑绯红御系/极速时尚 | 居中包含式布局 | 动态背景图与复合光影
   ========================================================================== */

/* 1. 全局变量与 Reset */
:root {
  --bg-dark: #0b0c12;
  --bg-card: rgba(20, 22, 34, 0.75);
  --bg-card-hover: rgba(28, 31, 48, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  
  --primary: #ff4d7d;        /* 红杏绯红 */
  --primary-hover: #ff2a63;
  --primary-glow: rgba(255, 77, 125, 0.35);
  --secondary: #a855f7;      /* 高光紫 */
  --accent-cyan: #06b6d4;     /* 极速青 */
  --accent-green: #10b981;    /* 在线绿 */
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(255, 77, 125, 0.3);
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.6), 0 0 30px rgba(255, 77, 125, 0.15);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 2. 动态背景图与复合光影效果 (Dynamic Background Image & Orbs) */
.bg-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
}

.dynamic-bg-img {
  position: absolute;
  top: -5%;
  left: -5%;
  width: 110%;
  height: 110%;
  background-image: url('../images/apricot_bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.28;
  filter: blur(3px) contrast(1.1);
  animation: kenBurns 35s infinite alternate ease-in-out;
}

@keyframes kenBurns {
  0% { transform: scale(1) translate(0, 0); }
  50% { transform: scale(1.08) translate(-1.5%, -2%); }
  100% { transform: scale(1.04) translate(1.5%, 1%); }
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.45;
  pointer-events: none;
}

.glow-orb-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(255, 77, 125, 0.45) 0%, rgba(230, 57, 70, 0) 70%);
  top: -120px;
  right: -120px;
  animation: floatOrb1 22s infinite alternate ease-in-out;
}

.glow-orb-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.4) 0%, rgba(138, 43, 226, 0) 70%);
  bottom: -180px;
  left: -180px;
  animation: floatOrb2 28s infinite alternate ease-in-out;
}

.glow-orb-3 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.3) 0%, rgba(0, 242, 254, 0) 70%);
  top: 40%;
  left: 28%;
  animation: floatOrb3 18s infinite alternate ease-in-out;
}

@keyframes floatOrb1 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-90px, 130px) scale(1.2); }
}

@keyframes floatOrb2 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(110px, -100px) scale(1.15); }
}

@keyframes floatOrb3 {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-70px, -70px) scale(0.85); }
}

.bg-grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.6;
}

#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

/* 3. 核心布局容器 (居中布局) */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 4. 通用组件与按钮 */
a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.3s ease;
}
a:hover {
  color: var(--primary-hover);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #d92656 100%);
  color: #fff;
  box-shadow: 0 8px 24px var(--primary-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 77, 125, 0.5);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 600;
  background: rgba(255, 77, 125, 0.12);
  border: 1px solid rgba(255, 77, 125, 0.3);
  color: var(--primary);
}

.badge-green {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--accent-green);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px auto;
}
.section-header .sub-title {
  color: var(--primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.9rem;
  margin-bottom: 12px;
  display: block;
}
.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* 5. 导航栏 Sticky Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 16px 0;
  transition: all 0.3s ease;
}
.navbar.scrolled {
  background: rgba(11, 12, 18, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 0;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  color: #fff;
}
.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 0 15px var(--primary-glow);
}
.logo-text span {
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 400;
  margin-left: 6px;
  opacity: 0.8;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}
.nav-links a:hover {
  color: var(--primary);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* 6. Hero 区域 */
.hero {
  padding: 160px 0 90px 0;
  text-align: center;
  position: relative;
}
.hero-badge-wrap {
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, #ff4d7d 0%, #f43f5e 50%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p.lead {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 36px auto;
}
.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(12px);
}
.stat-item {
  text-align: center;
}
.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  display: block;
}
.stat-value span {
  color: var(--primary);
}
.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* 7. 核心优势板块 */
.features {
  padding: 80px 0;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: rgba(255, 77, 125, 0.1);
  border: 1px solid rgba(255, 77, 125, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 8. 节点延迟与状态板块 */
.nodes-section {
  padding: 80px 0;
}
.nodes-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(12px);
  overflow-x: auto;
}
.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.nodes-table th, .nodes-table td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.nodes-table th {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.nodes-table td {
  font-size: 0.95rem;
  color: var(--text-main);
}
.node-name-cell {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}
.flag-icon {
  font-size: 1.3rem;
}
.ping-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  font-family: monospace;
}
.ping-low {
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
}
.ping-mid {
  background: rgba(245, 158, 11, 0.15);
  color: #f59e0b;
}
.load-bar-wrap {
  width: 100px;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
  margin-right: 8px;
}
.load-bar-inner {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-green), var(--primary));
  border-radius: 3px;
  transition: width 0.5s ease;
}

/* 9. 套餐价格板块 */
.pricing {
  padding: 80px 0;
}
.pricing-grid {
  display grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}
.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-lg);
}
.pricing-card.featured {
  border: 2px solid var(--primary);
  background: linear-gradient(180deg, rgba(255, 77, 125, 0.12) 0%, rgba(20, 22, 34, 0.85) 100%);
  box-shadow: 0 0 35px rgba(255, 77, 125, 0.25);
}
.ribbon {
  position: absolute;
  top: -12px;
  right: 20px;
  background: linear-gradient(135deg, var(--primary), #e63946);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.pricing-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}
.pricing-header p {
  color: var(--text-muted);
  font-size: 0.85rem;
  min-height: 38px;
}
.price-wrap {
  margin: 24px 0;
}
.price {
  font-size: 2.5rem;
  font-weight: 900;
  color: #fff;
}
.price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}
.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}
.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 12px;
}
.pricing-features li i {
  color: var(--primary);
}

/* 10. 知识库与 8 篇 SEO 教程板块 */
.kb-section {
  padding: 80px 0;
}
.kb-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.kb-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
  cursor: pointer;
}
.kb-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}
.kb-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  display: block;
}
.kb-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.kb-card p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.kb-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-dim);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
}

/* 文章模态框 / 全屏阅读器 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(11, 12, 18, 0.9);
  backdrop-filter: blur(16px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 20px;
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}
.modal-content {
  background: #141624;
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 900px;
  max-height: 88vh;
  overflow-y: auto;
  padding: 40px;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
  color: #e2e8f0;
}
.modal-close {
  position: sticky;
  top: 0;
  float: right;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 10;
}
.modal-close:hover {
  background: var(--primary);
}
.article-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
  margin-bottom: 30px;
}
.article-header h1 {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}
.article-meta-info {
  display: flex;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.article-body {
  line-height: 1.8;
  font-size: 1.05rem;
}
.article-body h2 {
  font-size: 1.4rem;
  color: #fff;
  margin: 32px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 77, 125, 0.2);
}
.article-body h3 {
  font-size: 1.15rem;
  color: var(--primary);
  margin: 24px 0 12px 0;
}
.article-body p {
  margin-bottom: 18px;
  color: #cbd5e1;
}
.article-body ul, .article-body ol {
  margin: 0 0 20px 24px;
}
.article-body li {
  margin-bottom: 8px;
}
.article-body code {
  background: rgba(255, 77, 125, 0.15);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.9em;
}
.article-body pre {
  background: #0f111a;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  overflow-x: auto;
  margin-bottom: 20px;
}
.article-cta-box {
  background: linear-gradient(135deg, rgba(255, 77, 125, 0.15) 0%, rgba(168, 85, 247, 0.15) 100%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  margin: 36px 0;
}

/* 11. 用户评价板块 */
.reviews {
  padding: 80px 0;
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.stars {
  color: #fbbf24;
  font-size: 1rem;
  margin-bottom: 16px;
}
.review-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
  line-height: 1.6;
}
.reviewer {
  display: flex;
  align-items: center;
  gap: 14px;
}
.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1rem;
}
.reviewer-info h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
}
.reviewer-info p {
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* 12. 常见问题 FAQ 板块 */
.faq {
  padding: 80px 0;
}
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: all 0.3s ease;
}
.faq-question {
  padding: 22px 28px;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}
.faq-question i {
  color: var(--primary);
  transition: transform 0.3s ease;
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--text-muted);
  font-size: 0.95rem;
  padding: 0 28px;
}
.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 28px 22px 28px;
}

/* 13. 底部 Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px 0;
  background: rgba(7, 8, 12, 0.95);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 320px;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 20px;
  font-weight: 700;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 12px;
}
.footer-col a {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.footer-col a:hover {
  color: var(--primary);
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 30px;
  color: var(--text-dim);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 14. 响应式布局 (Responsive Breakpoints) */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.75rem; }
  .features-grid, .pricing-grid, .kb-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #0d0e16;
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-links.active { display: flex; }
  .mobile-toggle { display: block; }
  .hero h1 { font-size: 2.2rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .features-grid, .pricing-grid, .kb-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; }
  .modal-content { padding: 24px; }
}