/* ============================================================
   Shuo Cu — 成都硕促淋科技有限公司
   Computer Systems Design & Related Services
   Design System — Mobile-First
   ============================================================ */

/* --- Custom Properties ----------------------------------- */
:root {
  /* Palette */
  --color-deep: #0f1729;
  --color-deep-alt: #1a1f35;
  --color-surface: #ffffff;
  --color-surface-alt: #f8f7fc;
  --color-surface-muted: #f1f0f6;
  --color-accent: #7c3aed;
  --color-accent-deep: #5b21b6;
  --color-accent-light: #c084fc;
  --color-rose: #f472b6;
  --color-rose-light: #fbcfe8;
  --color-amber: #f59e0b;
  --color-emerald: #10b981;
  --color-text: #1e1b2e;
  --color-text-secondary: #4a4558;
  --color-text-on-dark: #e8e6f0;
  --color-text-muted: #6b647a;
  --color-border: #e4e0ec;
  --color-border-light: #f0edf5;
  --color-success: #059669;
  --color-error: #dc2626;

  /* Typography */
  --font-sans: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-sc: 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 80px;
  --container-max: 1200px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-base: 300ms;
  --duration-slow: 500ms;
}

/* --- Reset ----------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }
address { font-style: normal; }

/* --- Utility --------------------------------------------- */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
.section-padding { padding: var(--section-padding) 0; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(124, 58, 237, 0.08);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--color-deep);
  margin-bottom: 16px;
}
.section-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  max-width: 540px;
  margin: 0 auto;
}

/* --- Buttons --------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  padding: 14px 28px;
  border-radius: 12px;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 1px 2px rgba(124, 58, 237, 0.2), 0 4px 16px rgba(124, 58, 237, 0.15);
}
.btn-primary:hover {
  background: var(--color-accent-deep);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(124, 58, 237, 0.25), 0 8px 24px rgba(124, 58, 237, 0.2);
}
.btn-outline {
  border: 2px solid var(--color-border);
  color: var(--color-text);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.btn-light {
  background: #fff;
  color: var(--color-accent);
  font-weight: 700;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05), 0 4px 16px rgba(0,0,0,0.08);
}
.btn-light:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.08), 0 8px 24px rgba(0,0,0,0.12);
}
.btn-submit {
  width: 100%;
  justify-content: center;
  padding: 16px 28px;
  font-size: 16px;
}

/* --- Header ---------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-light);
  transition: box-shadow var(--duration-base) var(--ease-out);
}
.site-header.scrolled { box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04); }
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  z-index: 101;
}
.logo-icon { flex-shrink: 0; }
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-deep);
  letter-spacing: -0.02em;
  font-family: var(--font-sans);
}
.logo-sub {
  font-family: var(--font-sc);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(124, 58, 237, 0.08);
  padding: 3px 8px;
  border-radius: 5px;
  letter-spacing: 0.04em;
}

/* Nav */
.main-nav ul { display: flex; align-items: center; gap: 8px; }
.main-nav a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 8px 16px;
  border-radius: 8px;
  transition: all var(--duration-fast) var(--ease-out);
}
.main-nav a:hover { color: var(--color-text); background: var(--color-surface-muted); }
.main-nav .nav-cta {
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  margin-left: 8px;
}
.main-nav .nav-cta:hover { background: var(--color-accent-deep); color: #fff; }

/* Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 101;
}
.hamburger-line {
  width: 24px;
  height: 2.5px;
  background: var(--color-deep);
  border-radius: 2px;
  transition: all var(--duration-base) var(--ease-out);
}
.nav-toggle.active .hamburger-line:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.active .hamburger-line:nth-child(2) { opacity: 0; }
.nav-toggle.active .hamburger-line:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* --- Hero ------------------------------------------------ */
.hero {
  position: relative;
  padding: 140px 0 100px;
  overflow: hidden;
  background: var(--color-surface-alt);
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

/* Hero Background */
.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(124, 58, 237, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(244, 114, 182, 0.04) 0%, transparent 50%);
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  opacity: 0.5;
}
.hero-glow--1 {
  width: 500px; height: 500px;
  background: rgba(124, 58, 237, 0.1);
  top: -200px; left: -100px;
}
.hero-glow--2 {
  width: 400px; height: 400px;
  background: rgba(244, 114, 182, 0.08);
  bottom: -150px; right: -100px;
}

/* Hero Content */
.hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
}
.badge-dot {
  width: 8px; height: 8px;
  background: var(--color-emerald);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero-title {
  font-size: clamp(36px, 5.5vw, 58px);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: 24px;
  color: var(--color-deep);
}
.title-line { display: block; }
.title-line--accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-rose));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Hero Visual */
.hero-visual {
  position: relative;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-shape {
  width: 340px;
  height: 340px;
  color: var(--color-accent);
  animation: float 6s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
.hero-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 14px 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04);
  white-space: nowrap;
  animation: card-float 5s ease-in-out infinite;
}
.hero-card--1 { top: 5%; left: 5%; animation-delay: 0s; }
.hero-card--2 { top: 55%; right: 0; animation-delay: 1s; }
.hero-card--3 { bottom: 5%; left: 15%; animation-delay: 2s; }
@keyframes card-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.hero-card-icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(124, 58, 237, 0.08);
  border-radius: 10px;
  color: var(--color-accent);
}
.hero-card-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

/* --- Services -------------------------------------------- */
.services { background: var(--color-surface); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 18px;
  padding: 36px 28px 28px;
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.03), rgba(244, 114, 182, 0.03));
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}
.service-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent-light);
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.06), 0 16px 40px rgba(0,0,0,0.06);
}
.service-card:hover::before { opacity: 1; }
.service-card > * { position: relative; z-index: 1; }
.service-icon {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(124, 58, 237, 0.06);
  border-radius: 14px;
  color: var(--color-accent);
  margin-bottom: 20px;
  transition: all var(--duration-base) var(--ease-out);
}
.service-card:hover .service-icon { background: var(--color-accent); color: #fff; }
.service-card h3 { font-size: 18px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 10px; color: var(--color-deep); }
.service-card p { font-size: 14.5px; color: var(--color-text-secondary); line-height: 1.65; margin-bottom: 20px; }
.service-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  transition: gap var(--duration-fast);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.service-link:hover { gap: 8px; }

/* --- About ----------------------------------------------- */
.about { background: var(--color-surface-alt); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 380px;
}
.about-geo { width: 280px; height: 280px; color: var(--color-accent); }
.about-stat-card {
  position: absolute;
  bottom: 5%;
  right: 5%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 16px 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04);
  text-align: center;
}
.asc-value { font-size: 15px; font-weight: 800; color: var(--color-accent); letter-spacing: -0.02em; line-height: 1.3; }
.asc-label { font-size: 12px; color: var(--color-text-muted); margin-top: 2px; }
.about-content .section-tag { margin-bottom: 12px; }
.about-content .section-title { text-align: left; margin-bottom: 20px; }
.about-lead {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.55;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.about-content p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}
.about-contacts {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.about-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--color-text-secondary);
}

/* --- Process --------------------------------------------- */
.process { background: var(--color-surface); }
.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}
.process-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--color-border) 0, var(--color-border) 6px, transparent 6px, transparent 12px);
}
.process-step { position: relative; padding-top: 60px; }
.process-marker {
  position: absolute;
  top: 0;
  left: 0;
  width: 56px; height: 56px;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: all var(--duration-base) var(--ease-out);
}
.process-marker span {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
}
.process-step:hover .process-marker {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.25);
}
.process-step:hover .process-marker span { color: #fff; }
.process-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 16px;
  padding: 24px;
  transition: all var(--duration-base) var(--ease-out);
}
.process-step:hover .process-card {
  border-color: var(--color-accent-light);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}
.process-card h3 { font-size: 17px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px; color: var(--color-deep); }
.process-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.65; margin-bottom: 14px; }
.process-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.process-tags li {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.01em;
}

/* --- Industries ------------------------------------------ */
.industries { background: var(--color-surface-alt); }
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.industry-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 16px;
  padding: 32px 28px;
  transition: all var(--duration-base) var(--ease-out);
}
.industry-card:hover { transform: translateY(-3px); box-shadow: 0 4px 20px rgba(0,0,0,0.04); }
.industry-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(124, 58, 237, 0.06);
  border-radius: 12px;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.industry-card h3 { font-size: 17px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 8px; color: var(--color-deep); }
.industry-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; }

/* --- Stats ----------------------------------------------- */
.stats { background: var(--color-deep); padding: 64px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item { padding: 20px; }
.stat-number {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0;
}
.stat-suffix { font-size: 0.6em; font-weight: 700; }
.stat-label { font-size: 15px; font-weight: 600; color: var(--color-accent-light); margin-bottom: 4px; }
.stat-desc { font-size: 13px; color: var(--color-text-on-dark); opacity: 0.6; }

/* --- Contact --------------------------------------------- */
.contact { background: var(--color-surface); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.contact-info .section-title { text-align: left; }
.contact-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 32px;
}
.contact-details { display: flex; flex-direction: column; gap: 20px; }
.contact-detail { display: flex; gap: 14px; align-items: flex-start; }
.contact-detail-icon {
  width: 44px; height: 44px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(124, 58, 237, 0.06);
  border-radius: 12px;
  color: var(--color-accent);
}
.contact-detail strong { display: block; font-size: 13px; font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 2px; }
.contact-detail a, .contact-detail address { font-size: 15px; color: var(--color-text); line-height: 1.5; font-weight: 500; }

/* Contact Form */
.contact-form-wrapper { background: var(--color-surface-alt); border: 1px solid var(--color-border-light); border-radius: 20px; padding: 36px; }
.contact-form {}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13.5px; font-weight: 600; color: var(--color-text); margin-bottom: 6px; letter-spacing: -0.01em; }
.form-group .required { color: var(--color-accent); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  color: var(--color-text);
  transition: all var(--duration-fast) var(--ease-out);
  outline: none;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--color-text-muted); opacity: 0.6; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b647a' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group.error input, .form-group.error select, .form-group.error textarea { border-color: var(--color-error); }
.form-error { display: none; font-size: 12.5px; color: var(--color-error); margin-top: 4px; }
.form-group.error .form-error { display: block; }
.form-success {
  margin-top: 20px;
  padding: 20px 24px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 12px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  color: var(--color-success);
}
.form-success svg { flex-shrink: 0; margin-top: 1px; }
.form-success p { font-size: 15px; line-height: 1.5; font-weight: 500; }

/* --- CTA ------------------------------------------------- */
.cta { padding-bottom: var(--section-padding); }
.cta-card {
  position: relative;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-deep));
  border-radius: 24px;
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
}
.cta-card h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.cta-card p {
  font-size: 17px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
  position: relative;
  z-index: 1;
}
.cta-card .btn { position: relative; z-index: 1; }
.cta-ornament {
  position: absolute;
  width: 200px; height: 200px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.12);
  pointer-events: none;
}
.cta-ornament--tl { top: -60px; left: -60px; }
.cta-ornament--br { bottom: -60px; right: -60px; }

/* --- Footer ---------------------------------------------- */
.site-footer {
  background: var(--color-deep);
  color: var(--color-text-on-dark);
  padding: 64px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo { margin-bottom: 16px; display: inline-flex; }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.5); line-height: 1.65; max-width: 360px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer-col h4 { font-size: 13px; font-weight: 700; color: #fff; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: rgba(255,255,255,0.5); transition: color var(--duration-fast); }
.footer-col a:hover { color: var(--color-accent-light); }
.footer-bottom { padding-top: 28px; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.35); line-height: 1.6; }

/* --- Tablet (<= 1024px) --------------------------------- */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { height: 300px; }
  .hero-shape { width: 240px; height: 240px; }
  .hero-card--1 { left: 0; }
  .hero-card--2 { right: 0; }
  .hero-card--3 { left: 25%; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { min-height: 280px; }
  .process-timeline { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .process-timeline::before { display: none; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; }
}

/* --- Mobile (<= 768px) ---------------------------------- */
@media (max-width: 768px) {
  :root { --section-padding: 56px; }
  .container { padding: 0 20px; }

  /* Nav */
  .main-nav {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-base) var(--ease-out);
    z-index: 100;
  }
  .main-nav.open { opacity: 1; pointer-events: auto; }
  .main-nav ul { flex-direction: column; gap: 8px; text-align: center; }
  .main-nav a { font-size: 18px; padding: 14px 24px; }
  .main-nav .nav-cta { margin-left: 0; }
  .nav-toggle { display: flex; }
  .site-header .container { height: 64px; }

  /* Hero */
  .hero { padding: 112px 0 56px; }
  .hero-visual { display: none; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }

  /* Services */
  .services-grid { grid-template-columns: 1fr; }
  .process-timeline { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrapper { padding: 24px; }
  .cta-card { padding: 40px 24px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

/* --- Small Mobile (<= 480px) ---------------------------- */
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-links { grid-template-columns: 1fr 1fr; }
}

/* --- Reduced Motion -------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}