/* ============================================
   闫宝龙 - AI优化营销 官网样式
   配色：深底#0f172a + 琥珀金#f59e0b + 青蓝#06b6d4
   ============================================ */

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

:root {
  --c-dark: #0f172a;
  --c-dark-light: #1e293b;
  --c-accent: #f59e0b;
  --c-accent-hover: #d97706;
  --c-cyan: #06b6d4;
  --c-cyan-light: #22d3ee;
  --c-white: #ffffff;
  --c-bg-light: #f8fafc;
  --c-text: #1e293b;
  --c-text-muted: #64748b;
  --c-border: #e2e8f0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-card-hover: 0 12px 40px rgba(15, 23, 42, 0.15);
  --transition: 0.3s ease;
  --font-stack: system-ui, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font-stack);
  font-weight: 400;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ========== Utility ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-padding { padding: 80px 0; }
.text-center { text-align: center; }
.text-accent { color: var(--c-accent); }
.text-cyan { color: var(--c-cyan); }
.text-muted { color: var(--c-text-muted); }

/* Fade-in animation */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Header / Navigation ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}
.header.scrolled {
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--c-white);
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.logo .logo-name { color: var(--c-white); }
.logo .reg-mark {
  font-size: 12px;
  vertical-align: super;
  color: var(--c-accent);
  margin-left: 2px;
  font-weight: 400;
}
.logo .divider {
  color: var(--c-text-muted);
  margin: 0 10px;
  font-weight: 300;
}
.logo .logo-sub {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-accent);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--c-accent);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--c-accent);
  transition: width 0.3s ease;
}
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 8px 24px;
  background: var(--c-accent);
  color: var(--c-dark) !important;
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  transition: background var(--transition), transform var(--transition);
}
.nav-cta:hover { background: var(--c-accent-hover); transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--c-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== Hero Banner ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #0f172a 0%, #1a1e3a 30%, #0f172a 60%, #162033 100%);
  background-size: 300% 300%;
  animation: gradientFlow 8s linear infinite;
  overflow: hidden;
}

@keyframes gradientFlow {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Animated particles overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(2px 2px at 20% 30%, rgba(6, 182, 212, 0.4), transparent),
    radial-gradient(2px 2px at 40% 70%, rgba(245, 158, 11, 0.3), transparent),
    radial-gradient(1px 1px at 60% 20%, rgba(6, 182, 212, 0.3), transparent),
    radial-gradient(1px 1px at 80% 60%, rgba(245, 158, 11, 0.2), transparent),
    radial-gradient(1.5px 1.5px at 10% 80%, rgba(6, 182, 212, 0.3), transparent),
    radial-gradient(1.5px 1.5px at 90% 40%, rgba(245, 158, 11, 0.25), transparent),
    radial-gradient(1px 1px at 55% 50%, rgba(6, 182, 212, 0.2), transparent),
    radial-gradient(2px 2px at 75% 15%, rgba(245, 158, 11, 0.2), transparent);
  animation: particleDrift 12s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes particleDrift {
  0% { transform: translateY(0) translateX(0); }
  100% { transform: translateY(-20px) translateX(10px); }
}

/* Glow orbs */
.hero-glow-1 {
  position: absolute;
  top: 10%;
  right: 10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  animation: glowPulse 6s ease-in-out infinite;
  pointer-events: none;
}
.hero-glow-2 {
  position: absolute;
  bottom: 15%;
  left: 5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: glowPulse 8s ease-in-out infinite reverse;
  pointer-events: none;
}

@keyframes glowPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.15); opacity: 1; }
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: 40px;
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  animation: dotBlink 2s ease-in-out infinite;
}
@keyframes dotBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero h1 {
  font-size: 52px;
  font-weight: 700;
  color: var(--c-white);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero h1 .highlight {
  background: linear-gradient(135deg, var(--c-accent), var(--c-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero .hero-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 560px;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: var(--c-accent);
  color: var(--c-dark);
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-primary:hover {
  background: var(--c-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: transparent;
  color: var(--c-white);
  font-size: 16px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-outline:hover {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  background: rgba(6, 182, 212, 0.08);
}

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.hero-stats .stat-item {}
.hero-stats .stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--c-white);
  letter-spacing: -0.02em;
}
.hero-stats .stat-num .unit {
  font-size: 18px;
  font-weight: 500;
  color: var(--c-accent);
  margin-left: 2px;
}
.hero-stats .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 4px;
}

/* ========== Section Title ========== */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-header .section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 16px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.15);
  border-radius: 40px;
  color: var(--c-accent);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--c-dark);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-header p {
  font-size: 16px;
  color: var(--c-text-muted);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ========== Services Section ========== */
.services {
  background: var(--c-white);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  padding: 32px 24px;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  transition: all var(--transition);
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-cyan));
  opacity: 0;
  transition: opacity var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}
.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(6, 182, 212, 0.08));
  color: var(--c-accent);
}

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-dark);
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.7;
}
.service-card .service-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--c-cyan);
  transition: gap var(--transition);
}
.service-card:hover .service-link { gap: 8px; }

/* ========== Why Choose Section ========== */
.why-choose {
  background: var(--c-bg-light);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.why-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--c-white);
  border-radius: var(--radius);
  border: 1px solid var(--c-border);
  transition: all var(--transition);
}
.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}
.why-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-accent), var(--c-cyan));
  color: var(--c-white);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}
.why-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--c-dark);
  margin-bottom: 10px;
}
.why-card p {
  font-size: 14px;
  color: var(--c-text-muted);
  line-height: 1.7;
}

/* ========== Process Section ========== */
.process {
  background: var(--c-white);
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent), var(--c-cyan));
}
.process-step {
  text-align: center;
  padding: 0 16px;
  position: relative;
}
.process-step .step-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--c-white);
  border: 3px solid var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 28px;
  position: relative;
  z-index: 1;
}
.process-step:nth-child(2) .step-circle { border-color: #e8a317; }
.process-step:nth-child(3) .step-circle { border-color: #4da8b4; }
.process-step:nth-child(4) .step-circle { border-color: var(--c-cyan); }

.process-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--c-dark);
  margin-bottom: 8px;
}
.process-step p {
  font-size: 13px;
  color: var(--c-text-muted);
  line-height: 1.6;
}

/* ========== FAQ Section ========== */
.faq {
  background: var(--c-bg-light);
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--c-white);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  border: 1px solid var(--c-border);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item:hover {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-dark);
  text-align: left;
  line-height: 1.5;
  font-family: var(--font-stack);
  transition: color var(--transition);
}
.faq-question:hover { color: var(--c-accent); }
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--c-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--c-accent);
  transition: transform var(--transition), background var(--transition);
  margin-left: 16px;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--c-accent);
  color: var(--c-white);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.active .faq-answer {
  max-height: 400px;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--c-text-muted);
  line-height: 1.8;
}

/* ========== About Section ========== */
.about {
  background: var(--c-white);
}
.about-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 56px;
  align-items: center;
}
.about-photo-wrap {
  position: relative;
}
.about-photo {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: top;
}
.about-photo-badge {
  position: absolute;
  bottom: -16px;
  right: -16px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-cyan));
  color: var(--c-white);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
}
.about-info h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--c-dark);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.about-info .about-subtitle {
  font-size: 16px;
  color: var(--c-accent);
  font-weight: 500;
  margin-bottom: 24px;
}
.about-info .about-desc {
  font-size: 16px;
  color: var(--c-text-muted);
  line-height: 1.9;
  margin-bottom: 28px;
}
.about-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.about-highlight-item {
  padding: 20px;
  background: var(--c-bg-light);
  border-radius: var(--radius-sm);
  text-align: center;
}
.about-highlight-item .num {
  font-size: 28px;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: -0.02em;
}
.about-highlight-item .label {
  font-size: 13px;
  color: var(--c-text-muted);
  margin-top: 4px;
}

/* ========== Contact Section ========== */
.contact {
  background: var(--c-dark);
  color: var(--c-white);
}
.contact .section-header h2 { color: var(--c-white); }
.contact .section-header p { color: rgba(255, 255, 255, 0.6); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
}
.contact-card {
  padding: 32px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  text-align: center;
  transition: all var(--transition);
}
.contact-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(245, 158, 11, 0.3);
  transform: translateY(-4px);
}
.contact-card .contact-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
}
.contact-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}
.contact-card p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
}
.contact-card a {
  color: var(--c-accent);
  font-weight: 500;
}
.contact-card a:hover {
  color: var(--c-accent-hover);
}

.contact-qr {
  text-align: center;
  padding: 32px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  max-width: 240px;
  margin: 0 auto;
}
.contact-qr img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-sm);
  margin: 0 auto 12px;
  background: var(--c-white);
  padding: 8px;
}
.contact-qr p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

/* ========== Friend Links ========== */
.friend-links {
  background: var(--c-white);
  border-top: 1px solid var(--c-border);
}
.friend-links-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.friend-links-grid a {
  display: block;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--c-text-muted);
  background: var(--c-bg-light);
  border-radius: 6px;
  text-align: center;
  transition: all var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.friend-links-grid a:hover {
  background: var(--c-dark);
  color: var(--c-accent);
}

/* ========== Footer ========== */
.footer {
  background: #0a0f1a;
  color: rgba(255, 255, 255, 0.5);
  padding: 32px 0;
}
.footer .container {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  text-align: center;
}
.footer a {
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}
.footer a:hover { color: var(--c-accent); }
.footer .sep { margin: 0 8px; }

/* ========== Back to Top ========== */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--c-accent);
  color: var(--c-dark);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 999;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}
.back-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top:hover {
  background: var(--c-accent-hover);
  transform: translateY(-2px);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .process-steps::before { display: none; }
  .about-layout { grid-template-columns: 1fr; gap: 32px; }
  .about-photo-wrap { max-width: 280px; margin: 0 auto; }
  .friend-links-grid { grid-template-columns: repeat(4, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 40px; }
}

@media (max-width: 768px) {
  .section-padding { padding: 56px 0; }
  .hero h1 { font-size: 32px; }
  .hero .hero-desc { font-size: 16px; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stats .stat-num { font-size: 28px; }
  .section-header h2 { font-size: 28px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.97);
    backdrop-filter: blur(16px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .menu-toggle { display: flex; }
  .services-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .about-highlights { grid-template-columns: repeat(3, 1fr); }
  .friend-links-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .hero-content { padding-top: 32px; }
  .container { padding: 0 16px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 28px; }
  .logo .logo-sub { font-size: 13px; }
  .about-highlights { grid-template-columns: 1fr; }
  .friend-links-grid { grid-template-columns: repeat(2, 1fr); }
}