:root {
  --primary: #00d2ff;
  --primary-dark: #0088cc;
  --secondary: #7928ca;
  --accent-pink: #ff0080;
  --accent-green: #00df89;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-glow: rgba(0, 210, 255, 0.35);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 10px 30px rgba(0, 210, 255, 0.12);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  background: radial-gradient(circle at 10% 10%, rgba(0, 210, 255, 0.04) 0%, transparent 40%),
              radial-gradient(circle at 90% 90%, rgba(121, 40, 202, 0.04) 0%, transparent 40%),
              #f8fafc;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

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

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 210, 255, 0.2);
  box-shadow: 0 4px 20px rgba(0, 210, 255, 0.05);
}

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

.brand-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-box .ai-page-logo {
  max-height: 42px;
  width: auto;
}

.brand-title-group {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, #0070f3, #7928ca);
  -webkit-background-clip: text;
  color: #0070f3;
  letter-spacing: -0.5px;
}

.brand-tag {
  font-size: 0.75rem;
  color: var(--text-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-links a {
  padding: 8px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: #0070f3;
  background: rgba(0, 210, 255, 0.08);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  padding: 10px 22px;
  border-radius: 9999px;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, #00d2ff, #7928ca);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(121, 40, 202, 0.45);
  color: #ffffff;
}

.btn-secondary {
  background: #ffffff;
  color: #0f172a;
  border-color: #cbd5e1;
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  border-color: #00d2ff;
  color: #0070f3;
  transform: translateY(-2px);
}

.btn-neon {
  background: linear-gradient(135deg, #ff0080, #7928ca);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(255, 0, 128, 0.3);
}

.btn-neon:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 0, 128, 0.45);
  color: #ffffff;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.85rem;
}

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

/* Sections General */
section {
  padding: 70px 0;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 50px auto;
}

.badge-glow {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #7928ca;
  background: rgba(121, 40, 202, 0.08);
  border: 1px solid rgba(121, 40, 202, 0.2);
  border-radius: 9999px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Hero Section (No Images!) */
.hero-section {
  padding: 90px 0 80px 0;
  text-align: center;
  background: linear-gradient(180deg, rgba(0, 210, 255, 0.08) 0%, rgba(121, 40, 202, 0.04) 50%, transparent 100%);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  position: relative;
  overflow: hidden;
}

.hero-glow-blob-1 {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 350px;
  background: radial-gradient(circle, rgba(0, 210, 255, 0.2) 0%, rgba(121, 40, 202, 0.1) 60%, transparent 80%);
  filter: blur(50px);
  z-index: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: #ffffff;
  border: 1px solid #7928ca;
  border-radius: 9999px;
  box-shadow: 0 4px 15px rgba(121, 40, 202, 0.12);
  font-size: 0.88rem;
  font-weight: 700;
  color: #7928ca;
  margin-bottom: 24px;
}

.hero-pill-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 20px;
  color: #0f172a;
  letter-spacing: -1px;
}

.hero-h1 span.gradient-text {
  background: linear-gradient(135deg, #0070f3 0%, #7928ca 50%, #ff0080 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 820px;
  margin: 0 auto 36px auto;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-actions .btn-hero-main {
  font-size: 1.15rem;
  padding: 14px 38px;
  background: linear-gradient(135deg, #00d2ff, #7928ca);
  border: none;
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 210, 255, 0.4);
}

.hero-actions .btn-hero-main:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(121, 40, 202, 0.55);
}

.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 20px;
}

.hero-stat-card {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 210, 255, 0.3);
  padding: 22px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.hero-stat-card:hover {
  border-color: #7928ca;
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.hero-stat-num {
  font-size: 2rem;
  font-weight: 900;
  color: #0f172a;
  background: linear-gradient(135deg, #0070f3, #7928ca);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}

.hero-stat-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* Card System & Hover */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: rgba(0, 210, 255, 0.6);
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 210, 255, 0.15);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #00d2ff, #7928ca, #ff0080);
  opacity: 0;
  transition: var(--transition);
}

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

/* Model Matrix Wall */
.models-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 30px;
}

.model-tag {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  padding: 8px 16px;
  border-radius: 9999px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
  transition: var(--transition);
}

.model-tag:hover {
  border-color: #00d2ff;
  color: #0070f3;
  background: rgba(0, 210, 255, 0.05);
  transform: scale(1.05);
}

.model-tag.highlight {
  border-color: #7928ca;
  background: linear-gradient(135deg, rgba(121, 40, 202, 0.08), rgba(0, 210, 255, 0.08));
  color: #7928ca;
}

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(0, 210, 255, 0.15), rgba(121, 40, 202, 0.15));
  border: 1px solid rgba(0, 210, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
  color: #7928ca;
}

.service-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}

.service-text {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Steps / Process */
.step-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.step-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.step-card:hover {
  transform: translateY(-4px);
  border-color: #7928ca;
  box-shadow: var(--shadow-glow);
}

.step-num {
  font-size: 1.6rem;
  font-weight: 900;
  color: #00d2ff;
  margin-bottom: 8px;
  letter-spacing: -1px;
}

.step-card h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.step-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Comparison Table */
.table-container {
  width: 100%;
  overflow-x: auto;
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.compare-table th,
.compare-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.95rem;
}

.compare-table th {
  background: #f8fafc;
  font-weight: 700;
  color: var(--text-main);
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.compare-table td.highlight-col {
  background: rgba(0, 210, 255, 0.04);
  font-weight: 700;
  color: #0070f3;
  border-left: 2px solid #00d2ff;
  border-right: 2px solid #00d2ff;
}

.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: linear-gradient(135deg, #ff0080, #7928ca);
  color: #ffffff;
  font-weight: 800;
  border-radius: 9999px;
  font-size: 0.9rem;
}

/* Images & Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.gallery-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.gallery-item:hover {
  transform: translateY(-4px);
  border-color: #00d2ff;
  box-shadow: var(--shadow-glow);
}

.gallery-item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover img {
  transform: scale(1.04);
}

.gallery-caption {
  padding: 14px 18px;
}

.gallery-caption h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.gallery-caption p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

.review-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.review-card:hover {
  border-color: #7928ca;
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00d2ff, #7928ca);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
}

.review-user h4 {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
}

.review-user p {
  font-size: 0.8rem;
  color: var(--text-light);
}

.review-content {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.review-rating {
  color: #ff9900;
  font-size: 0.95rem;
  margin-top: 14px;
}

/* FAQ Accordion */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(0, 210, 255, 0.6);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 20px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  color: #0070f3;
}

.faq-icon {
  font-size: 1.2rem;
  font-weight: 400;
  transition: transform 0.3s ease;
  color: #7928ca;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 20px 18px 20px;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px dashed #f1f5f9;
}

.faq-item.active .faq-answer {
  display: block;
}

/* Form & Contact */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: #f8fafc;
  color: var(--text-main);
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  border-color: #00d2ff;
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(0, 210, 255, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 110px;
}

.contact-info-card {
  background: linear-gradient(135deg, rgba(0, 210, 255, 0.05), rgba(121, 40, 202, 0.05));
  border: 1px solid rgba(0, 210, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 28px;
}

.contact-info-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 18px;
}

.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.contact-list li {
  font-size: 0.95rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-list strong {
  color: var(--text-main);
}

.qr-box {
  display: flex;
  align-items: center;
  gap: 16px;
  background: #ffffff;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid #e2e8f0;
}

.qr-box img {
  width: 90px;
  height: 90px;
  border-radius: var(--radius-sm);
  border: 1px solid #cbd5e1;
}

.qr-text h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.qr-text p {
  font-size: 0.8rem;
  color: var(--text-light);
  line-height: 1.4;
}

/* Articles Section */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.article-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-card:hover {
  border-color: #00d2ff;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.article-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}

.article-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.article-card .read-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: #0070f3;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Footer & Friendly Links */
.site-footer {
  background: #0b1120;
  color: #94a3b8;
  padding: 60px 0 30px 0;
  margin-top: 60px;
  border-top: 1px solid rgba(0, 210, 255, 0.2);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: #94a3b8;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: #00d2ff;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  color: #94a3b8;
  font-size: 0.88rem;
}

.footer-col ul li a:hover {
  color: #00d2ff;
}

.friend-links-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 30px;
}

.friend-links-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #e2e8f0;
  margin-bottom: 10px;
}

.friend-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.friend-links-list a {
  color: #94a3b8;
  font-size: 0.85rem;
}

.friend-links-list a:hover {
  color: #00d2ff;
}

.footer-bottom {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: #64748b;
}

/* Floating Tools */
.float-tools {
  position: fixed;
  right: 20px;
  bottom: 30px;
  z-index: 99;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #ffffff;
  border: 1px solid #00d2ff;
  color: #0070f3;
  box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
}

.float-btn:hover {
  background: #00d2ff;
  color: #ffffff;
  transform: scale(1.1);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-h1 {
    font-size: 2.2rem;
  }
  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3, .gallery-grid, .reviews-grid, .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .step-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: #ffffff;
    flex-direction: column;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
  }
  .nav-links.show {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    padding: 10px 0;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-h1 {
    font-size: 1.8rem;
  }
  .hero-lead {
    font-size: 1rem;
  }
  .grid-3, .grid-2, .grid-4, .gallery-grid, .reviews-grid, .article-grid, .step-list {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
}