/* ═══════════════════════════════════════════════════════════════
   Sheng Chong Network Technology Co., Ltd.
   Songyuan, Jilin — Computer Systems Design & Related Services
   Custom Design — No Templates
   ═══════════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ── */
:root {
  /* Palette: Midnight + Ember + Sky */
  --color-void:       #090714;
  --color-deep:       #12102a;
  --color-midnight:   #1c1840;
  --color-ember:      #e8a840;
  --color-ember-dark: #c48820;
  --color-sky:        #38b2ac;
  --color-sky-dark:   #2c8b86;

  --color-surface:    #fcfaf5;
  --color-surface-alt:#f3efe4;
  --color-border:     #e0d9c8;

  --color-text:       #17142a;
  --color-text-soft:  #4a465e;
  --color-text-inv:   #faf8f3;

  --font-display:  'Segoe UI', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-body:     'Segoe UI', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-mono:     'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  24px;
  --radius-xl:  40px;

  --shadow-card: 0 1px 3px rgba(9,7,20,0.08), 0 6px 20px rgba(9,7,20,0.05);
  --shadow-elevated: 0 2px 8px rgba(9,7,20,0.10), 0 12px 40px rgba(9,7,20,0.07);
  --shadow-button: 0 4px 14px rgba(200,136,32,0.28);

  --transition-fast: 180ms ease;
  --transition-smooth: 320ms cubic-bezier(0.22, 0.61, 0.36, 1);

  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-surface);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-sky-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-ember-dark); }

ul { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-deep);
}

h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); }
h2 { font-size: clamp(1.7rem, 3.8vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.5rem); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-sky-dark);
  background: linear-gradient(135deg, rgba(56,178,172,0.10) 0%, rgba(56,178,172,0.04) 100%);
  padding: 0.4em 1em;
  border-radius: 100vmax;
  margin-bottom: 0.75rem;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(252,250,245,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition-smooth), border-color var(--transition-smooth), box-shadow var(--transition-smooth);
}

.nav.scrolled {
  background: rgba(252,250,245,0.96);
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 8px rgba(9,7,20,0.05);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-deep);
  text-decoration: none;
}

.nav-logo-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-text-soft);
  transition: color var(--transition-fast);
}
.nav-links a:hover { color: var(--color-ember-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 7rem 0 5rem;
  overflow: hidden;
  background: linear-gradient(170deg, var(--color-deep) 0%, var(--color-midnight) 45%, var(--color-void) 100%);
  color: var(--color-text-inv);
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.06;
  background-image:
    radial-gradient(circle at 20% 30%, var(--color-ember) 1px, transparent 1px),
    radial-gradient(circle at 75% 60%, var(--color-sky) 1px, transparent 1px);
  background-size: 50px 50px, 70px 70px;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.18;
  pointer-events: none;
}

.hero-glow-ember {
  width: 500px;
  height: 500px;
  background: var(--color-ember);
  top: -15%;
  right: -8%;
}

.hero-glow-sky {
  width: 350px;
  height: 350px;
  background: var(--color-sky);
  bottom: -10%;
  left: -5%;
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image:
    linear-gradient(rgba(255,255,255,0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.3) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  color: var(--color-text-inv);
  margin-bottom: 1.25rem;
  line-height: 1.15;
}

.hero-content h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--color-ember) 0%, #f5c662 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: #c4bfd6;
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.75;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-icon-block {
  width: 320px;
  height: 320px;
  position: relative;
}

.hero-icon-outer {
  position: absolute;
  inset: 0;
  border: 2px solid rgba(232,168,64,0.25);
  border-radius: 38% 62% 55% 45% / 45% 48% 52% 55%;
  animation: heroMorph 8s ease-in-out infinite;
}

.hero-icon-mid {
  position: absolute;
  inset: 25px;
  border: 1.5px solid rgba(56,178,172,0.30);
  border-radius: 42% 58% 60% 40% / 52% 45% 55% 48%;
  animation: heroMorph 8s ease-in-out infinite reverse;
}

.hero-icon-inner {
  position: absolute;
  inset: 55px;
  background: linear-gradient(135deg, rgba(232,168,64,0.12) 0%, rgba(56,178,172,0.10) 100%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 48% 52% 44% 56% / 48% 50% 50% 52%;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: heroMorph 8s ease-in-out infinite;
}

@keyframes heroMorph {
  0%, 100% { border-radius: 38% 62% 55% 45% / 45% 48% 52% 55%; }
  25% { border-radius: 52% 48% 42% 58% / 55% 52% 48% 45%; }
  50% { border-radius: 44% 56% 58% 42% / 48% 42% 58% 52%; }
  75% { border-radius: 56% 44% 46% 54% / 42% 55% 45% 58%; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8em 1.8em;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 100vmax;
  cursor: pointer;
  transition: all var(--transition-smooth);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-ember) 0%, var(--color-ember-dark) 100%);
  color: var(--color-void);
  box-shadow: var(--shadow-button);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200,136,32,0.36);
  color: var(--color-void);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-inv);
  border: 1.5px solid rgba(255,255,255,0.35);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.6);
  color: var(--color-text-inv);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-sky-dark);
  border: 1.5px solid var(--color-sky);
}
.btn-ghost:hover {
  background: var(--color-sky);
  color: #fff;
  transform: translateY(-2px);
}

/* ── Section Spacing ── */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--color-text-soft);
  max-width: 520px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ── Services ── */
#services { background: var(--color-surface); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-ember) 0%, var(--color-sky) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevated);
  border-color: transparent;
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.6rem;
}

.service-icon.systems {
  background: linear-gradient(135deg, rgba(232,168,64,0.14) 0%, rgba(232,168,64,0.05) 100%);
  color: var(--color-ember-dark);
}

.service-icon.infrastructure {
  background: linear-gradient(135deg, rgba(56,178,172,0.14) 0%, rgba(56,178,172,0.05) 100%);
  color: var(--color-sky-dark);
}

.service-icon.consulting {
  background: linear-gradient(135deg, rgba(28,24,64,0.10) 0%, rgba(28,24,64,0.04) 100%);
  color: var(--color-midnight);
}

.service-icon.security {
  background: linear-gradient(135deg, rgba(200,136,32,0.12) 0%, rgba(56,178,172,0.08) 100%);
  color: var(--color-deep);
}

.service-card h3 { margin-bottom: 0.6rem; }

.service-card p {
  color: var(--color-text-soft);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ── About ── */
#about {
  background: var(--color-surface-alt);
  position: relative;
  overflow: hidden;
}

#about::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,168,64,0.05) 0%, transparent 70%);
  pointer-events: none;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.about-text h2 { margin-bottom: 1.25rem; }

.about-text p {
  color: var(--color-text-soft);
  margin-bottom: 1rem;
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}

.about-highlight {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.about-highlight-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  color: var(--color-ember-dark);
  margin-top: 2px;
}

.about-highlight h4 {
  font-size: 0.95rem;
  margin-bottom: 0.15rem;
}

.about-highlight p {
  font-size: 0.85rem;
  margin-bottom: 0;
  color: var(--color-text-soft);
}

.about-visual {
  position: relative;
}

.about-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-elevated);
  border-left: 5px solid var(--color-ember);
}

.about-card-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.about-stat {
  text-align: center;
}

.about-stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-deep);
  line-height: 1;
}

.about-stat-value span {
  color: var(--color-ember-dark);
}

.about-stat-label {
  font-size: 0.8rem;
  color: var(--color-text-soft);
  margin-top: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── Process ── */
#process { background: var(--color-surface); }

.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  counter-reset: step;
}

.process-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  text-align: center;
  transition: all var(--transition-smooth);
  counter-increment: step;
}

.process-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.process-step::after {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: -0.6rem;
  right: 1.25rem;
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-surface-alt);
  line-height: 1;
  pointer-events: none;
  z-index: 0;
}

.process-step:hover::after {
  color: rgba(232,168,64,0.10);
}

.process-step-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-surface-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  font-size: 1.3rem;
  position: relative;
  z-index: 1;
}

.process-step h3 { position: relative; z-index: 1; margin-bottom: 0.5rem; }
.process-step p { position: relative; z-index: 1; font-size: 0.9rem; color: var(--color-text-soft); line-height: 1.6; }

/* ── Industries ── */
#industries {
  background: linear-gradient(170deg, var(--color-midnight) 0%, var(--color-deep) 100%);
  position: relative;
  overflow: hidden;
  color: var(--color-text-inv);
}

#industries .section-label {
  color: var(--color-sky);
  background: linear-gradient(135deg, rgba(56,178,172,0.20) 0%, rgba(56,178,172,0.06) 100%);
}

#industries h2 { color: var(--color-text-inv); }
#industries .section-header p { color: #b0abcc; }

.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.industry-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  text-align: center;
  backdrop-filter: blur(4px);
  transition: all var(--transition-smooth);
}

.industry-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(232,168,64,0.30);
  transform: translateY(-4px);
}

.industry-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.industry-card h3 {
  color: var(--color-text-inv);
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.industry-card p {
  color: #9590b8;
  font-size: 0.88rem;
  line-height: 1.55;
}

/* ── Stats Section ── */
#stats {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat-item {
  padding: 1.5rem;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--color-deep);
  line-height: 1;
  margin-bottom: 0.3rem;
}

.stat-number .plus { color: var(--color-ember-dark); }

.stat-item p {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

/* ── Contact ── */
#contact { background: var(--color-surface-alt); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact-info h2 { margin-bottom: 1rem; }

.contact-info > p {
  color: var(--color-text-soft);
  margin-bottom: 2rem;
  max-width: 400px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-detail {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
}

.contact-detail-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: #fff;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ember-dark);
}

.contact-detail-text strong {
  display: block;
  font-size: 0.85rem;
  color: var(--color-deep);
  margin-bottom: 0.1rem;
}

.contact-detail-text span {
  font-size: 0.9rem;
  color: var(--color-text-soft);
}

.contact-form-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-deep);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.8em 1em;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-sky);
  box-shadow: 0 0 0 3px rgba(56,178,172,0.12);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.form-submit {
  margin-top: 0.5rem;
}

/* ── CTA ── */
.cta {
  background: linear-gradient(150deg, var(--color-deep) 0%, var(--color-midnight) 100%);
  text-align: center;
  padding: 5rem 0;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,255,255,0.5) 10px, rgba(255,255,255,0.5) 11px);
  pointer-events: none;
}

.cta h2 {
  color: var(--color-text-inv);
  margin-bottom: 0.75rem;
}

.cta p {
  color: #b0abcc;
  max-width: 480px;
  margin: 0 auto 2rem;
  font-size: 1.05rem;
}

.cta .btn-primary { margin: 0 0.5rem; }

/* ── Footer ── */
.footer {
  background: var(--color-void);
  color: #9590b8;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: #7a759e;
}

.footer h4 {
  color: var(--color-text-inv);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: #9590b8;
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--color-ember); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.82rem;
  color: #6a6588;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: #6a6588;
  font-size: 0.82rem;
}
.footer-bottom-links a:hover { color: var(--color-ember); }

/* ── Policy Pages (Privacy & Terms) ── */
.policy-page {
  padding: 7rem 0 5rem;
  background: var(--color-surface);
}

.policy-content {
  max-width: 780px;
  margin: 0 auto;
}

.policy-content h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin-bottom: 0.5rem;
}

.policy-content .policy-date {
  display: block;
  color: var(--color-text-soft);
  font-size: 0.9rem;
  margin-bottom: 2.5rem;
}

.policy-content h2 {
  font-size: 1.25rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-surface-alt);
}

.policy-content p,
.policy-content li {
  font-size: 1rem;
  color: var(--color-text-soft);
  margin-bottom: 0.85rem;
  line-height: 1.75;
}

.policy-content ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.policy-content li { margin-bottom: 0.5rem; }

.policy-content strong { color: var(--color-deep); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { order: -1; }
  .hero-icon-block { width: 240px; height: 240px; }
  .hero-content { text-align: center; }
  .hero-content p { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }

  .about-grid { grid-template-columns: 1fr; }
  .about-visual { max-width: 420px; margin: 0 auto; }

  .contact-grid { grid-template-columns: 1fr; }
  .contact-info > p { max-width: 100%; }

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

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-elevated);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition-smooth);
    pointer-events: none;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle { display: flex; }

  .hero { padding: 6rem 0 4rem; min-height: auto; }

  .section { padding: 4rem 0; }

  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; }
}

@media (max-width: 480px) {
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .about-highlights { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .contact-form-card { padding: 1.5rem; }
}