/* ═══════════════════════════════════
   Coregy 科瑞际能源 — 新版网页
   Design v2 — Refined Edition
   ═══════════════════════════════════ */

/* ── CSS Variables ── */
:root {
  --indigo:       #24118A;
  --indigo-dark:  #180B62;
  --indigo-mid:   #3D2BAA;
  --indigo-soft:  #EAE6FF;
  --rose:         #7C3057;
  --rose-light:   #9E4070;
  --rose-soft:    #F5E8EF;
  --white:        #FFFFFF;
  --bg:           #F8F7FD;
  --bg-alt:       #EFECFA;
  --border:       #DDD8F5;
  --text:         #1A0B6B;
  --text-muted:   #6B60A8;
  --text-light:   #9E94C8;
  --accent:       #A78BFA;
  --max-width:    1200px;
  --nav-height:   70px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }
body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--indigo); text-decoration: none; }

/* ── Language Toggle (CSS-based) ── */
.lang-en .zh { display: none !important; }
.lang-zh .en { display: none !important; }

/* ── Typography ── */
h1 { font-size: clamp(32px, 4.5vw, 56px); font-weight: 800; line-height: 1.12; letter-spacing: -0.03em; }
h2 { font-size: clamp(24px, 3.5vw, 42px); font-weight: 800; line-height: 1.18; letter-spacing: -0.02em; }
h3 { font-size: clamp(16px, 1.6vw, 22px); font-weight: 700; line-height: 1.3; }
h4 { font-size: 15px; font-weight: 700; }
p  { font-size: 15px; color: var(--text-muted); line-height: 1.8; }

/* ── Utility ── */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 32px; }
section { padding: 100px 32px; }
.section-inner { max-width: var(--max-width); margin: 0 auto; }

.section-label {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--rose); margin-bottom: 14px;
}
.section-label::before {
  content: ''; display: block;
  width: 22px; height: 2px; background: var(--rose); border-radius: 2px;
}

.section-title { font-size: clamp(26px, 3.5vw, 42px); font-weight: 800; color: var(--text); line-height: 1.15; margin-bottom: 16px; letter-spacing: -0.02em; }
.section-title.on-dark { color: white; }
.section-desc { font-size: 15px; color: var(--text-muted); max-width: 580px; line-height: 1.8; }
.section-desc.on-dark { color: rgba(255,255,255,0.55); }

.section-header { text-align: center; margin-bottom: 52px; }
.section-header .section-label { justify-content: center; }
.section-header .section-label::before, .section-header .section-label::after { content: ''; display: block; width: 22px; height: 2px; background: var(--rose); border-radius: 2px; }
.section-header .section-desc { margin: 0 auto; }

/* ── Navigation ── */
nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(255,255,255,0.97); backdrop-filter: blur(16px);
  border-bottom: 1px solid #E8E4F5;
  box-shadow: 0 1px 16px rgba(36,17,138,0.06);
}
.nav-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 32px;
  height: var(--nav-height); display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 18px; font-weight: 700; color: var(--indigo); text-decoration: none;
  letter-spacing: -0.02em; flex-shrink: 0;
}
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a {
  color: var(--text); text-decoration: none; font-size: 14px; font-weight: 600;
  letter-spacing: 0.01em; transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--rose); }
.nav-right { display: flex; align-items: center; gap: 12px; }

.lang-toggle {
  background: var(--indigo); border: none; color: white;
  padding: 7px 16px; border-radius: 100px; cursor: pointer;
  font-size: 13px; font-family: inherit; font-weight: 600;
  transition: all 0.2s; letter-spacing: 0.03em;
}
.lang-toggle:hover { background: var(--indigo-mid); }

.nav-cta {
  background: var(--rose); color: white; padding: 8px 20px; border-radius: 100px;
  text-decoration: none; font-size: 13px; font-weight: 600;
  transition: background 0.2s; box-shadow: 0 2px 12px rgba(124,48,87,0.25);
}
.nav-cta:hover { background: var(--rose-light); }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none; padding: 4px;
}
.hamburger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.3s; }

/* ── Hero ── */
.hero {
  min-height: 100vh; background: var(--indigo-dark);
  position: relative; display: flex; align-items: center; overflow: hidden;
}
.hero-glow {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 70% at 65% 40%, rgba(61,43,170,0.7) 0%, transparent 65%),
              radial-gradient(ellipse 50% 60% at 10% 80%, rgba(124,48,87,0.35) 0%, transparent 55%),
              radial-gradient(ellipse 40% 40% at 90% 10%, rgba(36,17,138,0.4) 0%, transparent 50%);
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 56px 56px;
}
.hero-orb {
  position: absolute; right: -120px; top: 50%; transform: translateY(-50%);
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(124,48,87,0.18) 0%, transparent 70%);
  border: 1px solid rgba(255,255,255,0.04); pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 2;
  max-width: var(--max-width); margin: 0 auto; padding: 120px 32px 80px;
  width: 100%; display: grid; grid-template-columns: 1fr 420px; gap: 60px; align-items: center;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.85); padding: 7px 16px; border-radius: 100px;
  font-size: 13px; font-weight: 500; margin-bottom: 28px; letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }

.hero-brand {
  font-size: 13px; font-weight: 700; color: var(--accent); letter-spacing: 0.15em;
  text-transform: uppercase; margin-bottom: 10px;
}

.hero-title { font-size: clamp(34px, 4.5vw, 58px); font-weight: 800; color: white; line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 20px; }
.hero-title .accent { color: var(--accent); }
.hero-title .accent2 { color: #F9A8D4; }

.hero-subtitle {
  font-size: 16px; color: rgba(255,255,255,0.55); font-weight: 400;
  margin-bottom: 36px; line-height: 1.7; max-width: 520px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.btn-primary {
  background: var(--rose); color: white; padding: 14px 30px; border-radius: 10px;
  text-decoration: none; font-weight: 700; font-size: 15px; border: none; cursor: pointer; font-family: inherit;
  transition: all 0.2s; display: inline-flex; align-items: center; gap: 6px;
  box-shadow: 0 4px 20px rgba(124,48,87,0.4);
}
.btn-primary:hover { background: var(--rose-light); box-shadow: 0 6px 28px rgba(124,48,87,0.5); transform: translateY(-1px); }

.btn-ghost {
  border: 1px solid rgba(255,255,255,0.22); color: rgba(255,255,255,0.85);
  padding: 14px 30px; border-radius: 10px; text-decoration: none; font-weight: 500;
  font-size: 15px; font-family: inherit; cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
  transition: all 0.2s; backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: rgba(167,139,250,0.5); color: #C4AAFF; }

.btn-outline {
  border: 1px solid var(--border); color: var(--text); padding: 12px 24px;
  border-radius: 10px; text-decoration: none; font-weight: 600; font-size: 14px;
  transition: all 0.2s; display: inline-flex; align-items: center; gap: 6px; font-family: inherit;
}
.btn-outline:hover { border-color: var(--indigo); color: var(--indigo); background: var(--indigo-soft); }

/* Hero Stats */
.hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 48px; }
.stat-card {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 14px; padding: 20px; backdrop-filter: blur(8px); transition: background 0.2s;
}
.stat-card:hover { background: rgba(255,255,255,0.1); }
.stat-card .number { font-size: 30px; font-weight: 800; color: white; line-height: 1; margin-bottom: 4px; letter-spacing: -0.02em; }
.stat-card .number span { color: var(--accent); }
.stat-card .label { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.4; }

/* Hero Right Card */
.hero-card {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px; padding: 28px; backdrop-filter: blur(16px);
}
.hero-card-title { font-size: 13px; font-weight: 600; color: rgba(255,255,255,0.5); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 20px; }
.product-list-item {
  display: flex; align-items: center; gap: 14px; padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.product-list-item:last-child { border-bottom: none; }
.pli-icon { width: 36px; height: 36px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.pli-text .name { font-size: 14px; font-weight: 600; color: white; }
.pli-text .desc { font-size: 11px; color: rgba(255,255,255,0.45); margin-top: 2px; }
.pli-arrow { margin-left: auto; color: rgba(255,255,255,0.2); font-size: 16px; }

/* ── Page Header (sub-pages) ── */
.page-header {
  padding-top: 120px; padding-bottom: 60px;
  background: var(--indigo-dark); position: relative; overflow: hidden;
  text-align: center;
}
.page-header::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 80%, rgba(61,43,170,0.4) 0%, transparent 60%);
}
.page-header .section-inner { position: relative; z-index: 1; }
.page-header h1 { color: white; margin-bottom: 12px; }
.page-header .section-desc { color: rgba(255,255,255,0.55); margin: 0 auto; }
.page-header .section-label { justify-content: center; color: var(--accent); }
.page-header .section-label::before { background: var(--accent); }

/* ── Page Subnav (products etc) ── */
.page-subnav {
  display: flex; justify-content: center; gap: 8px; flex-wrap: wrap;
  padding: 24px 0; border-bottom: 1px solid var(--border); margin-bottom: 0;
  background: white; position: sticky; top: var(--nav-height); z-index: 50;
}
.page-subnav a {
  padding: 8px 18px; border-radius: 100px; font-size: 13px; font-weight: 600;
  color: var(--text-muted); transition: all 0.2s;
}
.page-subnav a:hover, .page-subnav a.active { background: var(--indigo-soft); color: var(--indigo); }

/* ── Grid Layouts ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

/* ── Product Cards ── */
.prod-card {
  background: white; border: 1px solid var(--border); border-radius: 18px;
  overflow: hidden; transition: all 0.3s; display: flex; flex-direction: column;
}
.prod-card:hover { border-color: var(--indigo); box-shadow: 0 12px 40px rgba(36,17,138,0.12); transform: translateY(-4px); }
.prod-img {
  height: 148px; display: flex; align-items: center; justify-content: center;
  background: #F4F4F2; font-size: 40px; position: relative; flex-shrink: 0;
}
.prod-badge {
  position: absolute; top: 12px; right: 12px;
  background: rgba(36,17,138,0.12); color: var(--indigo);
  font-size: 10px; font-weight: 700; padding: 3px 10px; border-radius: 100px;
  letter-spacing: 0.06em; backdrop-filter: blur(4px);
}
.prod-body { padding: 20px; flex-grow: 1; display: flex; flex-direction: column; }
.prod-body h3 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.prod-body .en-sub { font-size: 11px; color: var(--rose); font-weight: 600; margin-bottom: 10px; letter-spacing: 0.04em; }
.prod-body p { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-top: auto; }

/* ── Service / Advantage Cards ── */
.svc-card {
  background: white; border: 1px solid var(--border); border-radius: 18px;
  padding: 28px; transition: all 0.3s;
}
.svc-card:hover { border-color: var(--indigo); box-shadow: 0 8px 32px rgba(36,17,138,0.08); transform: translateY(-2px); }
.svc-icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 18px; border: 1px solid var(--border);
}
.svc-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.svc-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* Dark variant */
.svc-card.dark {
  background: rgba(255,255,255,0.05); border-color: rgba(255,255,255,0.09);
}
.svc-card.dark:hover { background: rgba(255,255,255,0.09); border-color: rgba(167,139,250,0.3); }
.svc-card.dark h3 { color: white; }
.svc-card.dark p { color: rgba(255,255,255,0.5); }
.svc-card.dark .svc-icon { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.1); }

/* ── Timeline ── */
.timeline { max-width: 720px; margin: 0 auto; position: relative; padding-left: 70px; }
.timeline::before {
  content: ''; position: absolute; left: 24px; top: 10px; bottom: 10px;
  width: 2px; background: var(--border);
}
.tl-item { position: relative; margin-bottom: 36px; }
.tl-num {
  position: absolute; left: -70px; top: 0;
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--indigo); color: white;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px; z-index: 1; border: 3px solid var(--bg);
}
.tl-item h4 { font-size: 16px; margin-bottom: 4px; }
.tl-item p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.tl-client {
  display: inline-block; margin-top: 8px; padding: 4px 14px;
  background: var(--rose-soft); color: var(--rose); border-radius: 100px;
  font-size: 12px; font-weight: 600;
}

/* ── Case Cards ── */
.case-card {
  background: white; border: 1px solid var(--border); border-radius: 20px;
  padding: 32px; margin-bottom: 24px; transition: all 0.3s;
}
.case-card:hover { border-color: var(--indigo); box-shadow: 0 8px 32px rgba(36,17,138,0.08); }
.case-card .tag { margin-bottom: 12px; display: inline-block; }
.case-card h3 { font-size: 18px; margin-bottom: 14px; }
.case-list { list-style: none; margin: 14px 0; }
.case-list li {
  padding: 5px 0 5px 20px; position: relative; font-size: 14px; color: var(--text-muted);
}
.case-list li::before { content: '•'; position: absolute; left: 0; color: var(--indigo); font-weight: 700; }
.case-result {
  margin-top: 16px; padding: 14px 20px; background: var(--indigo-soft);
  border-radius: 10px; font-weight: 600; font-size: 14px; color: var(--indigo);
}

/* ── Tags ── */
.tag {
  display: inline-block; padding: 4px 14px; border-radius: 100px;
  font-size: 11px; font-weight: 600; background: var(--indigo-soft); color: var(--indigo);
}
.tag-rose { background: var(--rose-soft); color: var(--rose); }

/* ── Vision Cards ── */
.vision-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.vision-card {
  background: white; border: 1px solid var(--border); border-radius: 18px;
  padding: 32px 24px; text-align: center; transition: all 0.3s;
}
.vision-card:hover { border-color: var(--indigo); box-shadow: 0 8px 32px rgba(36,17,138,0.08); }
.vision-period { font-size: 12px; font-weight: 700; color: var(--accent); letter-spacing: 0.08em; margin-bottom: 12px; }
.vision-card h3 { font-size: 18px; margin-bottom: 10px; }
.vision-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ── Dark Section ── */
.section-dark {
  background: var(--indigo-dark); position: relative; overflow: hidden;
}
.section-dark::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 80% at 80% 50%, rgba(61,43,170,0.4) 0%, transparent 60%),
              radial-gradient(ellipse 40% 50% at 10% 30%, rgba(124,48,87,0.2) 0%, transparent 50%);
}
.section-dark .section-inner { position: relative; z-index: 1; }

/* ── Country Chips ── */
.country-strip {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
  position: relative; z-index: 1;
}
.country-chip {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 100px; padding: 7px 16px; transition: all 0.2s; cursor: default;
}
.country-chip:hover { background: rgba(124,48,87,0.25); border-color: rgba(124,48,87,0.5); }
.country-chip .flag { font-size: 16px; }
.country-chip .name { font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.8); }

/* ── Map Stats ── */
.map-stats { display: flex; justify-content: center; gap: 60px; margin-top: 36px; position: relative; z-index: 1; }
.map-stat { text-align: center; }
.map-stat .n { font-size: 36px; font-weight: 800; color: white; letter-spacing: -0.03em; }
.map-stat .n span { color: var(--accent); }
.map-stat .l { font-size: 13px; color: rgba(255,255,255,0.5); margin-top: 4px; }

/* ── Stats Bar (light) ── */
.stats-bar { display: flex; justify-content: center; gap: 48px; padding: 0; }
.stat-item { text-align: center; }
.stat-item .num { font-size: 34px; font-weight: 800; color: var(--indigo); line-height: 1; letter-spacing: -0.02em; }
.stat-item .num span { color: var(--accent); }
.stat-item .lbl { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ── Trust Bar ── */
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 640px; margin: 0 auto; }
.trust-item {
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12);
  border-radius: 16px; padding: 28px 20px; text-align: center; backdrop-filter: blur(8px);
}
.trust-num { font-size: 28px; font-weight: 800; color: white; letter-spacing: -0.02em; }
.trust-lbl { font-size: 13px; color: rgba(255,255,255,0.55); margin-top: 4px; }

/* ── Form ── */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; color: var(--text); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 14px; font-family: inherit; transition: all 0.2s; background: white; color: var(--text);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--indigo); box-shadow: 0 0 0 3px var(--indigo-soft);
}
.form-textarea { min-height: 120px; resize: vertical; }

/* ── Contact Info ── */
.contact-info-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-info-item .icon {
  width: 48px; height: 48px; border-radius: 14px;
  background: var(--indigo-soft); display: flex; align-items: center;
  justify-content: center; font-size: 20px; flex-shrink: 0;
}
.contact-info-item .lbl { font-weight: 600; font-size: 14px; margin-bottom: 2px; }
.contact-info-item .val { font-size: 14px; color: var(--text-muted); }

/* ── Footer ── */
.footer {
  background: var(--indigo-dark); color: white; padding: 60px 0 32px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.footer h4 { color: white; font-size: 15px; margin-bottom: 16px; }
.footer a { color: rgba(255,255,255,0.55); display: block; margin-bottom: 8px; font-size: 14px; transition: color 0.2s; }
.footer a:hover { color: white; }
.footer p { color: rgba(255,255,255,0.45); font-size: 14px; line-height: 1.7; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px; text-align: center; font-size: 13px; color: rgba(255,255,255,0.35); }

/* ── Animations ── */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-right { max-width: 480px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  section { padding: 60px 20px; }
  .container { padding: 0 20px; }
  .section-header { margin-bottom: 36px; }

  .nav-links {
    display: none; position: fixed; top: var(--nav-height); left: 0; right: 0;
    background: white; flex-direction: column; padding: 20px 32px; gap: 20px;
    border-bottom: 1px solid var(--border); box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }
  .nav-links.open { display: flex; }
  .nav-right { flex-direction: column; align-items: stretch; gap: 10px; }
  .nav-cta { text-align: center; }
  .hamburger { display: flex; }

  .hero-inner { padding-top: 100px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); margin-top: 36px; }
  .hero-right { display: none; }

  .grid-2 { grid-template-columns: 1fr; gap: 24px; }
  .grid-3 { grid-template-columns: 1fr; gap: 16px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .vision-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .map-stats { gap: 32px; }
  .stats-bar { gap: 24px; flex-wrap: wrap; }
  .timeline { padding-left: 56px; }
  .tl-num { left: -56px; width: 40px; height: 40px; font-size: 15px; }

  .page-header { padding-top: 100px; padding-bottom: 40px; }
  .nav-cta { display: none; }
}

@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr; }
}