/* ===== KK直播 - 全局样式 ===== */
:root {
  --primary: #FF4D6A;
  --primary-dark: #E0334E;
  --primary-light: #FF7A90;
  --secondary: #6C5CE7;
  --accent: #00D2D3;
  --dark: #1A1A2E;
  --dark-light: #16213E;
  --gray-100: #F8F9FA;
  --gray-200: #E9ECEF;
  --gray-300: #DEE2E6;
  --gray-400: #CED4DA;
  --gray-500: #ADB5BD;
  --gray-600: #6C757D;
  --gray-700: #495057;
  --gray-800: #343A40;
  --white: #FFFFFF;
  --gradient-primary: linear-gradient(135deg, #FF4D6A 0%, #FF8A5C 100%);
  --gradient-secondary: linear-gradient(135deg, #6C5CE7 0%, #A29BFE 100%);
  --gradient-dark: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
  --shadow-primary: 0 4px 20px rgba(255,77,106,0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }
h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.5rem; }
p { line-height: 1.8; }

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
}
.header.scrolled {
  box-shadow: var(--shadow-sm);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.2rem;
  font-weight: 900;
}
.logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav { display: flex; align-items: center; gap: 8px; }
.nav a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: var(--transition);
}
.nav a:hover, .nav a.active {
  color: var(--primary);
  background: rgba(255,77,106,0.08);
}
.nav-cta {
  background: var(--gradient-primary) !important;
  color: var(--white) !important;
  -webkit-text-fill-color: var(--white) !important;
  padding: 10px 24px !important;
  border-radius: var(--radius-xl) !important;
  font-weight: 600 !important;
  box-shadow: var(--shadow-primary);
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255,77,106,0.4) !important;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.menu-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--gray-800);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
  padding: 140px 0 100px;
  background: linear-gradient(180deg, #FFF5F7 0%, #FFFFFF 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,77,106,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(108,92,231,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}
.hero-content { flex: 1; }
.hero-visual { flex: 1; display: flex; justify-content: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,77,106,0.1);
  color: var(--primary);
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.hero-badge::before { content: '🔥'; }
.hero h1 {
  font-size: 3.2rem;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--dark);
}
.hero h1 span {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.15rem;
  color: var(--gray-600);
  margin-bottom: 36px;
  max-width: 520px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-200);
}
.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--dark);
}
.hero-stat-label {
  font-size: 0.85rem;
  color: var(--gray-500);
  margin-top: 4px;
}

/* Phone Mockup */
.phone-mockup {
  width: 280px;
  height: 560px;
  background: var(--gradient-dark);
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-lg), 0 0 0 2px rgba(255,255,255,0.1);
  position: relative;
  transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
  transition: var(--transition);
}
.phone-mockup:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}
.phone-screen {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #2D1B69 0%, #1A1A2E 50%, #0D0D1A 100%);
  border-radius: 26px;
  overflow: hidden;
  position: relative;
}
.phone-notch {
  width: 120px;
  height: 28px;
  background: var(--dark);
  border-radius: 0 0 16px 16px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.phone-ui {
  padding: 16px;
  color: var(--white);
}
.phone-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.phone-live-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--white);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.phone-user {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}
.phone-avatar {
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: 50%;
}
.phone-username {
  font-size: 0.8rem;
  font-weight: 600;
}
.phone-chat {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
}
.phone-chat-item {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-bottom: 8px;
  font-size: 0.65rem;
  opacity: 0.8;
}
.phone-chat-name { color: var(--accent); font-weight: 600; white-space: nowrap; }
.phone-chat-msg { color: rgba(255,255,255,0.8); }
.phone-hearts {
  position: absolute;
  right: 16px;
  bottom: 80px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.phone-heart {
  font-size: 1.2rem;
  animation: floatUp 2s infinite;
  opacity: 0.7;
}
.phone-heart:nth-child(2) { animation-delay: 0.5s; }
.phone-heart:nth-child(3) { animation-delay: 1s; }
@keyframes floatUp {
  0% { transform: translateY(0) scale(1); opacity: 0.7; }
  100% { transform: translateY(-30px) scale(0.5); opacity: 0; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-xl);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
  justify-content: center;
}
.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255,77,106,0.4);
}
.btn-secondary {
  background: var(--white);
  color: var(--gray-800);
  border: 2px solid var(--gray-200);
}
.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.btn-dark {
  background: var(--dark);
  color: var(--white);
}
.btn-dark:hover {
  background: var(--dark-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.btn-icon { font-size: 1.2rem; }

/* ===== Section Common ===== */
.section { padding: 100px 0; }
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,77,106,0.08);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.section-title {
  font-size: 2.4rem;
  color: var(--dark);
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1.1rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Feature Cards ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}
.feature-icon.pink { background: rgba(255,77,106,0.1); }
.feature-icon.purple { background: rgba(108,92,231,0.1); }
.feature-icon.cyan { background: rgba(0,210,211,0.1); }
.feature-icon.orange { background: rgba(255,138,92,0.1); }
.feature-icon.green { background: rgba(0,206,209,0.1); }
.feature-icon.blue { background: rgba(54,153,255,0.1); }
.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--dark);
}
.feature-card p {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ===== Highlight Section ===== */
.highlight-section {
  background: var(--gradient-dark);
  color: var(--white);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}
.highlight-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
  z-index: 1;
}
.highlight-item {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
}
.highlight-item:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-4px);
}
.highlight-num {
  font-size: 2.8rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}
.highlight-label {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.7);
}

/* ===== Steps / How it works ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 48px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: var(--gray-200);
  z-index: 0;
}
.step-item {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-primary);
}
.step-item h3 {
  margin-bottom: 10px;
  color: var(--dark);
}
.step-item p {
  color: var(--gray-600);
  font-size: 0.92rem;
}

/* ===== Testimonials ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.testimonial-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.testimonial-stars {
  color: #FFC107;
  font-size: 1rem;
  margin-bottom: 16px;
}
.testimonial-text {
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.8;
  margin-bottom: 20px;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
}
.testimonial-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark);
}
.testimonial-role {
  font-size: 0.8rem;
  color: var(--gray-500);
}

/* ===== Download CTA ===== */
.download-cta {
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  padding: 64px;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.download-cta::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
}
.download-cta h2 {
  font-size: 2.2rem;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.download-cta p {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}
.download-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--white);
  color: var(--dark);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.download-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}
.download-btn-icon { font-size: 1.6rem; }
.download-btn-text { text-align: left; }
.download-btn-label { font-size: 0.7rem; color: var(--gray-600); display: block; }
.download-btn-store { font-size: 1rem; font-weight: 700; }

/* ===== FAQ Section ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary-light); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--dark);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-arrow {
  font-size: 0.8rem;
  transition: var(--transition);
  color: var(--gray-500);
}
.faq-item.active .faq-arrow { transform: rotate(180deg); color: var(--primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--gray-600);
  font-size: 0.95rem;
  line-height: 1.8;
}
.faq-item.active .faq-answer { max-height: 300px; }

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.8);
  padding: 80px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-top: 16px;
  color: rgba(255,255,255,0.6);
}
.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
}
.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}
.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom-links {
  display: flex;
  gap: 24px;
}
.footer-bottom-links a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom-links a:hover { color: var(--primary-light); }

/* ===== Page Header (for inner pages) ===== */
.page-header {
  padding: 140px 0 80px;
  background: linear-gradient(180deg, #FFF5F7 0%, #FFFFFF 100%);
  text-align: center;
}
.page-header h1 {
  font-size: 2.8rem;
  color: var(--dark);
  margin-bottom: 16px;
}
.page-header p {
  font-size: 1.15rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Download Page Specific ===== */
.download-platforms {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.platform-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  border: 2px solid var(--gray-200);
  transition: var(--transition);
  cursor: pointer;
}
.platform-card:hover {
  border-color: var(--primary);
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.platform-icon { font-size: 3rem; margin-bottom: 16px; }
.platform-card h3 { font-size: 1.2rem; color: var(--dark); margin-bottom: 8px; }
.platform-card p { font-size: 0.85rem; color: var(--gray-500); margin-bottom: 20px; }
.platform-card .btn { width: 100%; }

/* QR Code Box */
.qr-section {
  text-align: center;
  padding: 60px 0;
}
.qr-box {
  display: inline-block;
  background: var(--white);
  padding: 32px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
}
.qr-placeholder {
  width: 200px;
  height: 200px;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  margin-bottom: 16px;
}
.qr-box p {
  font-size: 0.9rem;
  color: var(--gray-600);
}

/* ===== About Page ===== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h2 {
  font-size: 2rem;
  color: var(--dark);
  margin-bottom: 20px;
}
.about-text p {
  color: var(--gray-600);
  margin-bottom: 16px;
  font-size: 1rem;
}
.about-image {
  background: var(--gradient-dark);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}
.about-image-inner {
  text-align: center;
  color: var(--white);
}
.about-image-inner .logo-icon {
  width: 80px;
  height: 80px;
  font-size: 2rem;
  margin: 0 auto 20px;
  border-radius: var(--radius-md);
}
.about-image-inner h3 {
  font-size: 1.8rem;
  margin-bottom: 8px;
}
.about-image-inner p {
  color: rgba(255,255,255,0.7);
}

.timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gray-200);
}
.timeline-item {
  position: relative;
  margin-bottom: 40px;
}
.timeline-dot {
  position: absolute;
  left: -33px;
  top: 4px;
  width: 18px;
  height: 18px;
  background: var(--gradient-primary);
  border-radius: 50%;
  border: 3px solid var(--white);
  box-shadow: var(--shadow-sm);
}
.timeline-date {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}
.timeline-item h3 {
  font-size: 1.15rem;
  color: var(--dark);
  margin-bottom: 8px;
}
.timeline-item p {
  color: var(--gray-600);
  font-size: 0.92rem;
}

/* Team */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.team-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}
.team-card h3 { font-size: 1.1rem; color: var(--dark); margin-bottom: 4px; }
.team-card p { font-size: 0.85rem; color: var(--gray-500); }

/* ===== Help Page ===== */
.help-search {
  max-width: 600px;
  margin: 0 auto 48px;
  position: relative;
}
.help-search input {
  width: 100%;
  padding: 18px 24px 18px 52px;
  border-radius: var(--radius-xl);
  border: 2px solid var(--gray-200);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
  background: var(--white);
}
.help-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255,77,106,0.1);
}
.help-search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--gray-500);
}
.help-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.help-category {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--gray-200);
  transition: var(--transition);
  cursor: pointer;
}
.help-category:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.help-category-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.help-category h3 {
  font-size: 1.1rem;
  color: var(--dark);
  margin-bottom: 8px;
}
.help-category p {
  font-size: 0.88rem;
  color: var(--gray-600);
}

/* Contact Cards */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.contact-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}
.contact-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.contact-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
}
.contact-card h3 { font-size: 1.1rem; color: var(--dark); margin-bottom: 8px; }
.contact-card p { font-size: 0.9rem; color: var(--gray-600); }
.contact-card a { color: var(--primary); font-weight: 600; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid, .testimonials-grid, .help-categories, .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .download-platforms { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .about-content { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  .hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.8rem; }
  .hero .container { flex-direction: column; text-align: center; }
  .hero-desc { margin: 0 auto 36px; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { order: -1; }
  .phone-mockup { width: 220px; height: 440px; }
  .nav { display: none; position: fixed; top: 72px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 20px; box-shadow: var(--shadow-md); gap: 4px; }
  .nav.active { display: flex; }
  .menu-toggle { display: flex; }
  .features-grid, .testimonials-grid, .steps-grid, .help-categories, .contact-grid { grid-template-columns: 1fr; }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .download-platforms { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .download-cta { padding: 40px 24px; }
  .download-cta h2 { font-size: 1.6rem; }
  .steps-grid::before { display: none; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .page-header h1 { font-size: 2rem; }
}

@media (max-width: 480px) {
  .hero-stats { flex-direction: column; gap: 16px; }
  .highlight-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .download-buttons { flex-direction: column; align-items: center; }
}