/* ========================================
   酷编程 - 少儿编程主题网站样式
   ======================================== */

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #6C5CE7;
  --primary-light: #A29BFE;
  --secondary: #FDCB6E;
  --mint: #00B894;
  --mint-light: #55EFC4;
  --coral: #FF7675;
  --coral-light: #FD79A8;
  --bg: #F8F9FE;
  --bg-white: #FFFFFF;
  --text: #2D3436;
  --text-light: #636E72;
  --text-lighter: #B2BEC3;
  --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.08);
  --shadow-md: 0 8px 30px rgba(108, 92, 231, 0.12);
  --shadow-lg: 0 20px 60px rgba(108, 92, 231, 0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 92, 231, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(108, 92, 231, 0.08);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.3rem;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 900;
  font-family: 'Courier New', monospace;
}

.logo-text {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 36px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  transition: var(--transition);
  border-radius: 2px;
}

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

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

.nav-cta {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white !important;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: var(--transition);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: linear-gradient(180deg, #EEEDFF 0%, var(--bg) 100%);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(108, 92, 231, 0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--coral), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  display: inline;
}

.stat-suffix {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

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

/* Code Window */
.hero-visual {
  position: relative;
}

.code-window {
  background: #1E1E2E;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
  transition: var(--transition);
}

.code-window:hover {
  transform: perspective(1000px) rotateY(-2deg) rotateX(1deg);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: #181825;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #FF5F57; }
.dot.yellow { background: #FEBC2E; }
.dot.green { background: #28C840; }

.code-title {
  margin-left: 12px;
  color: #6C7086;
  font-size: 0.8rem;
  font-family: 'Courier New', monospace;
}

.code-body {
  padding: 20px;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.8;
  min-height: 280px;
}

.code-line {
  display: flex;
  gap: 16px;
  opacity: 0;
  animation: fadeInLine 0.3s ease forwards;
}

.code-line:nth-child(1) { animation-delay: 0.2s; }
.code-line:nth-child(2) { animation-delay: 0.4s; }
.code-line:nth-child(3) { animation-delay: 0.5s; }
.code-line:nth-child(4) { animation-delay: 0.6s; }
.code-line:nth-child(5) { animation-delay: 0.8s; }
.code-line:nth-child(6) { animation-delay: 1.0s; }
.code-line:nth-child(7) { animation-delay: 1.2s; }
.code-line:nth-child(8) { animation-delay: 1.3s; }
.code-line:nth-child(9) { animation-delay: 1.4s; }
.code-line:nth-child(10) { animation-delay: 1.6s; }

@keyframes fadeInLine {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.line-num {
  color: #45475A;
  min-width: 24px;
  text-align: right;
  user-select: none;
}

.code-comment { color: #6C7086; }
.code-keyword { color: #CBA6F7; }
.code-module { color: #89B4FA; }
.code-func { color: #89DCEB; }
.code-param { color: #FAB387; }
.code-builtin { color: #F9E2AF; }
.code-num { color: #A6E3A1; }

/* Floating Blocks */
.floating-blocks {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.block {
  position: absolute;
  width: 50px;
  height: 50px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-md);
  animation: float 6s ease-in-out infinite;
}

.block-1 {
  top: -20px;
  right: 40px;
  background: linear-gradient(135deg, #6C5CE7, #A29BFE);
  animation-delay: 0s;
}

.block-2 {
  bottom: 60px;
  left: -30px;
  background: linear-gradient(135deg, #00B894, #55EFC4);
  animation-delay: 1.5s;
}

.block-3 {
  top: 40%;
  right: -20px;
  background: linear-gradient(135deg, #FDCB6E, #F39C12);
  animation-delay: 3s;
}

.block-4 {
  bottom: -10px;
  right: 30%;
  background: linear-gradient(135deg, #FF7675, #FD79A8);
  animation-delay: 4.5s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(5deg); }
}

/* Hero Wave */
.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
}

.hero-wave svg {
  display: block;
  width: 100%;
  height: 80px;
}

/* ---------- Section Common ---------- */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(108, 92, 231, 0.1);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Features ---------- */
.features {
  padding: 100px 0;
  background: var(--bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.feature-age {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(108, 92, 231, 0.08);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ---------- Learning Path ---------- */
.path {
  padding: 100px 0;
  background: var(--bg-white);
}

.path-timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.path-timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--mint), var(--secondary), var(--coral));
  border-radius: 3px;
}

.path-step {
  display: flex;
  gap: 32px;
  margin-bottom: 48px;
  position: relative;
}

.path-step:last-child {
  margin-bottom: 0;
}

.path-marker {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
  z-index: 1;
}

.path-num {
  color: white;
  font-weight: 900;
  font-size: 1.1rem;
}

.path-content {
  background: var(--bg);
  border-radius: var(--radius-md);
  padding: 28px;
  flex: 1;
  transition: var(--transition);
}

.path-content:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.path-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.path-content h3 span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-light);
  margin-left: 8px;
}

.path-content p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.path-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.path-tags span {
  padding: 4px 12px;
  background: rgba(108, 92, 231, 0.08);
  color: var(--primary);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* ---------- Works ---------- */
.works {
  padding: 100px 0;
  background: var(--bg);
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.work-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.work-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.work-preview {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.work-emoji {
  font-size: 3.5rem;
  transition: var(--transition);
}

.work-card:hover .work-emoji {
  transform: scale(1.2);
}

.work-overlay {
  position: absolute;
  bottom: 12px;
  left: 12px;
}

.work-type {
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text);
}

.work-info {
  padding: 20px;
}

.work-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.work-info p {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.5;
}

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

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
}

.work-author span {
  font-size: 0.8rem;
  color: var(--text-light);
}

/* ---------- Reviews ---------- */
.reviews {
  padding: 100px 0;
  background: var(--bg-white);
}

.reviews-carousel {
  max-width: 800px;
  margin: 0 auto;
  overflow: hidden;
}

.reviews-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.review-card {
  min-width: 100%;
  padding: 48px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  text-align: center;
}

.review-stars {
  font-size: 1.4rem;
  color: var(--secondary);
  margin-bottom: 24px;
  letter-spacing: 4px;
}

.review-text {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 32px;
  font-style: italic;
}

.review-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
  font-weight: 700;
}

.review-author strong {
  display: block;
  font-size: 1rem;
}

.review-author span {
  font-size: 0.85rem;
  color: var(--text-light);
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 32px;
}

.carousel-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--primary);
  background: transparent;
  color: var(--primary);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-btn:hover {
  background: var(--primary);
  color: white;
}

.carousel-dots {
  display: flex;
  gap: 8px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-lighter);
  cursor: pointer;
  transition: var(--transition);
}

.carousel-dot.active {
  background: var(--primary);
  width: 28px;
  border-radius: 5px;
}

/* ---------- CTA ---------- */
.cta {
  padding: 100px 0;
  background: var(--bg);
}

.cta-card {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-xl);
  padding: 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.cta-content h2 {
  font-size: 2.2rem;
  font-weight: 900;
  color: white;
  margin-bottom: 16px;
}

.cta-content > p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 14px 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}

.form-group input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.form-group select {
  appearance: none;
  cursor: pointer;
}

.form-group select option {
  color: var(--text);
  background: white;
}

.form-group input:focus,
.form-group select:focus {
  border-color: white;
  background: rgba(255, 255, 255, 0.25);
}

.cta-form .btn-primary {
  background: white;
  color: var(--primary);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.cta-form .btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.cta-note {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 12px;
}

.cta-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.cta-illustration {
  position: relative;
  width: 280px;
  height: 280px;
}

.cta-circle {
  position: absolute;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.cta-circle.c1 {
  inset: 0;
  animation: spin 20s linear infinite;
}

.cta-circle.c2 {
  inset: 30px;
  animation: spin 15s linear infinite reverse;
}

.cta-circle.c3 {
  inset: 60px;
  animation: spin 10s linear infinite;
}

.cta-emoji {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  animation: float 3s ease-in-out infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ---------- Footer ---------- */
.footer {
  background: #1E1E2E;
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand .logo-text {
  -webkit-text-fill-color: white;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 300px;
}

.footer-links h4 {
  color: white;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: var(--primary-light);
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ---------- Scroll Animations ---------- */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Wechat Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: white;
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  max-width: 400px;
  width: 90%;
  text-align: center;
  position: relative;
  transform: scale(0.85) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 24px 80px rgba(108, 92, 231, 0.2);
}

.modal-overlay.show .modal-box {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--bg);
  border-radius: 50%;
  font-size: 1.3rem;
  color: var(--text-light);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--coral);
  color: white;
}

.modal-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--mint), var(--mint-light));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  color: white;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 12px;
}

.modal-text {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 32px;
}

.modal-text strong {
  color: var(--primary);
  font-size: 1.15rem;
}

.modal-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: white;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

.modal-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 92, 231, 0.5);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  top: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--bg-white);
  padding: 16px 32px;
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transition: all 0.4s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  border-left: 4px solid var(--mint);
  color: var(--mint);
}

.toast.error {
  border-left: 4px solid var(--coral);
  color: var(--coral);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .features-grid,
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-desc {
    margin: 0 auto 36px;
  }

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

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

  .hero-visual {
    max-width: 500px;
    margin: 0 auto;
  }

  .code-window {
    transform: none;
  }

  .code-window:hover {
    transform: none;
  }

  .cta-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cta-visual {
    display: none;
  }

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

@media (max-width: 768px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: white;
    padding: 24px;
    gap: 20px;
    box-shadow: var(--shadow-md);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat-num {
    font-size: 1.5rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

  .path-timeline::before {
    left: 20px;
  }

  .path-marker {
    width: 42px;
    height: 42px;
  }

  .path-num {
    font-size: 0.9rem;
  }

  .path-step {
    gap: 20px;
  }

  .review-card {
    padding: 32px 24px;
  }

  .review-text {
    font-size: 1rem;
  }

  .cta-card {
    padding: 36px 24px;
  }

  .cta-content h2 {
    font-size: 1.6rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}