/* ===== 艾涛科技官网重构版 main.css ===== */
:root {
  --bg: #060b1a;
  --bg-2: #0a1226;
  --bg-3: #0e1730;
  --card: rgba(148, 178, 255, 0.05);
  --card-border: rgba(148, 178, 255, 0.14);
  --text: #e8eefc;
  --text-2: #93a4c4;
  --text-3: #5d6d8f;
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --violet: #8b5cf6;
  --grad: linear-gradient(120deg, #22d3ee, #3b82f6 55%, #8b5cf6);
  --radius: 18px;
  --nav-h: 72px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, "Segoe UI", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
::selection { background: rgba(34, 211, 238, .3); }

.container { width: min(1180px, 92%); margin: 0 auto; }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== 导航 ===== */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: background .35s, border-color .35s, backdrop-filter .35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(6, 11, 26, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: rgba(148, 178, 255, .12);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; width: min(1180px, 92%); margin: 0 auto; }
.logo { display: flex; align-items: center; }
.logo-img {
  height: 52px; width: auto; display: block;
  filter: brightness(1.5) saturate(1.15) drop-shadow(0 0 12px rgba(34, 211, 238, .35));
}
.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links a {
  padding: 8px 16px; border-radius: 999px; font-size: 15px; color: var(--text-2);
  transition: color .25s, background .25s;
}
.nav-links a:hover { color: var(--text); background: rgba(148, 178, 255, .08); }
.nav-links a.active { color: var(--text); background: rgba(34, 211, 238, .13); }
.nav-cta {
  margin-left: 10px;
  background: var(--grad); color: #04122b !important; font-weight: 600;
  box-shadow: 0 4px 18px rgba(59, 130, 246, .4);
}
.nav-cta:hover { filter: brightness(1.1); }
.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--card-border);
  border-radius: 10px; background: transparent; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .3s, opacity .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 首页 Hero ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + 40px) 0 80px;
  overflow: hidden;
}
#particles { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(640px 420px at 12% 18%, rgba(34, 211, 238, .14), transparent 65%),
    radial-gradient(720px 480px at 88% 12%, rgba(139, 92, 246, .12), transparent 65%),
    radial-gradient(560px 560px at 55% 105%, rgba(59, 130, 246, .14), transparent 65%);
  pointer-events: none;
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 178, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 178, 255, .05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 40%, #000 30%, transparent 75%);
}
.hero-content { position: relative; z-index: 2; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px; border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, .35);
  background: rgba(34, 211, 238, .08);
  color: var(--cyan); font-size: 13.5px; letter-spacing: 1px;
  margin-bottom: 28px;
}
.hero-badge::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--cyan); box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2s infinite;
}
@keyframes pulse { 50% { opacity: .35; } }
.hero h1 {
  font-size: clamp(34px, 5.6vw, 62px);
  line-height: 1.25; font-weight: 800; letter-spacing: 1px;
  margin-bottom: 22px;
}
.hero p.lead {
  max-width: 720px; margin: 0 auto 40px;
  color: var(--text-2); font-size: clamp(15px, 1.8vw, 18px);
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 34px; border-radius: 999px;
  font-size: 15.5px; font-weight: 600; letter-spacing: .5px;
  transition: transform .25s, box-shadow .25s, filter .25s, border-color .25s, background .25s;
  cursor: pointer; border: none;
}
.btn-primary { background: var(--grad); color: #04122b; box-shadow: 0 8px 28px rgba(59, 130, 246, .42); }
.btn-primary:hover { transform: translateY(-3px); filter: brightness(1.08); box-shadow: 0 12px 36px rgba(34, 211, 238, .5); }
.btn-ghost { border: 1px solid var(--card-border); color: var(--text); background: rgba(148, 178, 255, .05); }
.btn-ghost:hover { border-color: rgba(34, 211, 238, .5); background: rgba(34, 211, 238, .08); transform: translateY(-3px); }

.hero-stats {
  margin-top: 72px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.stat {
  padding: 26px 14px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--card-border);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: transform .3s, border-color .3s;
}
.stat:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .4); }
.stat b { display: block; font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; }
.stat b span { font-size: inherit; color: inherit; }
.stat b em { font-style: normal; color: var(--cyan); }
.stat > span { color: var(--text-3); font-size: 13.5px; letter-spacing: .5px; }

/* ===== 通用 Section ===== */
.section { position: relative; padding: 110px 0; }
.section.alt { background: linear-gradient(180deg, transparent, rgba(14, 23, 48, .55) 18%, rgba(14, 23, 48, .55) 82%, transparent); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 4px;
  color: var(--cyan); text-transform: uppercase; margin-bottom: 14px; font-weight: 600;
}
.section-head h2 { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: 1px; margin-bottom: 16px; }
.section-head p { color: var(--text-2); font-size: 16px; }

/* 关于我们（首页摘要） */
.about-wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 64px; align-items: center; }
.about-visual {
  position: relative; border-radius: 24px; overflow: hidden;
  border: 1px solid var(--card-border);
  background:
    radial-gradient(420px 300px at 20% 15%, rgba(34, 211, 238, .22), transparent 60%),
    radial-gradient(420px 340px at 85% 85%, rgba(139, 92, 246, .2), transparent 60%),
    var(--bg-3);
  aspect-ratio: 4 / 3.1;
  display: grid; place-items: center;
}
.orbit { position: relative; width: 260px; height: 260px; }
.orbit-core {
  position: absolute; inset: 50% auto auto 50%; transform: translate(-50%, -50%);
  width: 92px; height: 92px; border-radius: 26px;
  background: var(--grad); display: grid; place-items: center;
  font-weight: 800; color: #04122b; font-size: 21px; text-align: center; line-height: 1.3;
  box-shadow: 0 0 46px rgba(34, 211, 238, .5);
}
.orbit-ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px dashed rgba(148, 178, 255, .35);
  animation: spin 22s linear infinite;
}
.orbit-ring.r2 { inset: -44px; animation-duration: 34s; animation-direction: reverse; border-color: rgba(34, 211, 238, .25); }
.orbit-ring i {
  position: absolute; top: -6px; left: 50%; width: 12px; height: 12px;
  border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px var(--cyan);
}
.orbit-ring.r2 i { background: var(--violet); box-shadow: 0 0 14px var(--violet); }
@keyframes spin { to { transform: rotate(360deg); } }
.orbit-tags { position: absolute; inset: 0; }
.orbit-tags b {
  position: absolute; padding: 6px 14px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
  background: rgba(6, 11, 26, .85); border: 1px solid var(--card-border); color: var(--text-2);
  animation: float 5s ease-in-out infinite;
}
.orbit-tags b:nth-child(1) { top: 4%; left: 6%; animation-delay: 0s; }
.orbit-tags b:nth-child(2) { top: 12%; right: 2%; animation-delay: 1.2s; }
.orbit-tags b:nth-child(3) { bottom: 10%; left: 0%; animation-delay: 2.1s; }
.orbit-tags b:nth-child(4) { bottom: 2%; right: 8%; animation-delay: .6s; }
@keyframes float { 50% { transform: translateY(-9px); } }
.about-body h3 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; margin-bottom: 20px; line-height: 1.4; }
.about-body p { color: var(--text-2); margin-bottom: 16px; font-size: 15.5px; }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 26px 0 32px; }
.about-points li {
  display: flex; gap: 10px; align-items: center; font-size: 14.5px; color: var(--text);
  padding: 12px 16px; border-radius: 12px; background: var(--card); border: 1px solid var(--card-border);
}
.about-points li::before {
  content: ""; flex: none; width: 8px; height: 8px; border-radius: 50%;
  background: var(--grad); box-shadow: 0 0 8px rgba(34, 211, 238, .6);
}

/* 产品服务 / 优势卡片 */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.card {
  position: relative; padding: 34px 26px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--card-border);
  transition: transform .35s, border-color .35s, box-shadow .35s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: var(--grad); opacity: 0; transition: opacity .35s;
}
.card:hover { transform: translateY(-8px); border-color: rgba(34, 211, 238, .42); box-shadow: 0 22px 44px rgba(2, 8, 23, .6); }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 56px; height: 56px; border-radius: 15px; margin-bottom: 22px;
  background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .28);
  display: grid; place-items: center; color: var(--cyan);
}
.card h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 6px; }
.card .en { display: block; font-size: 11px; letter-spacing: 2px; color: var(--text-3); text-transform: uppercase; margin-bottom: 14px; }
.card p { color: var(--text-2); font-size: 14.5px; }

/* 解决方案卡片 */
.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.sol-card {
  position: relative; padding: 38px 30px; border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(148, 178, 255, .07), rgba(148, 178, 255, .02));
  border: 1px solid var(--card-border);
  transition: transform .35s, border-color .35s, box-shadow .35s;
  display: flex; flex-direction: column;
}
.sol-card:hover { transform: translateY(-8px); border-color: rgba(59, 130, 246, .5); box-shadow: 0 24px 48px rgba(2, 8, 23, .65); }
.sol-num {
  position: absolute; top: 24px; right: 26px;
  font-size: 15px; font-weight: 800; color: rgba(148, 178, 255, .28); letter-spacing: 1px;
}
.sol-card h3 { font-size: 20px; font-weight: 700; margin: 18px 0 12px; }
.sol-card p { color: var(--text-2); font-size: 14.5px; flex: 1; }
.sol-link {
  margin-top: 22px; display: inline-flex; align-items: center; gap: 7px;
  color: var(--cyan); font-size: 14px; font-weight: 600;
  transition: gap .25s;
}
.sol-card:hover .sol-link { gap: 12px; }
.sol-link::after { content: "→"; }

/* AI 主打卡片（通栏横向） */
.sol-card.sol-featured {
  grid-column: 1 / -1;
  flex-direction: row; align-items: center; gap: 26px;
  background:
    radial-gradient(420px 200px at 8% 0%, rgba(34, 211, 238, .14), transparent 60%),
    radial-gradient(420px 220px at 95% 100%, rgba(139, 92, 246, .14), transparent 60%),
    linear-gradient(160deg, rgba(148, 178, 255, .07), rgba(148, 178, 255, .02));
}
.sol-featured .card-icon { margin-bottom: 0; flex: none; width: 64px; height: 64px; }
.sol-featured-body { flex: 1; }
.sol-featured-body h3 { margin: 0 0 10px; }
.sol-featured .sol-link { margin-top: 0; flex: none; }
.sol-badge {
  display: inline-block; vertical-align: middle; margin-left: 10px;
  padding: 3px 10px; border-radius: 999px; font-size: 11px; letter-spacing: 1px;
  background: var(--grad); color: #04122b; font-weight: 800;
}

/* 业务范围标签云 */
.biz-strip { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.biz-strip li {
  padding: 13px 26px; border-radius: 999px; font-size: 15px;
  background: var(--card); border: 1px solid var(--card-border); color: var(--text);
  transition: transform .3s, border-color .3s, color .3s;
}
.biz-strip li:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .5); color: var(--cyan); }

/* 合作伙伴 */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.partner {
  padding: 30px 18px; text-align: center; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--card-border);
  font-size: 16.5px; font-weight: 600; color: var(--text-2);
  transition: transform .3s, border-color .3s, color .3s;
}
.partner small { display: block; margin-top: 6px; font-size: 12px; font-weight: 400; color: var(--text-3); letter-spacing: 1px; }
.partner:hover { transform: translateY(-5px); border-color: rgba(139, 92, 246, .5); color: var(--text); }

/* 联系我们 */
.contact-wrap {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px;
  border-radius: 26px; overflow: hidden;
  border: 1px solid var(--card-border);
  background:
    radial-gradient(500px 300px at 8% 0%, rgba(34, 211, 238, .13), transparent 60%),
    radial-gradient(500px 340px at 100% 100%, rgba(139, 92, 246, .13), transparent 60%),
    var(--bg-3);
  padding: 56px;
}
.contact-info h3 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; margin-bottom: 28px; }
.contact-list li { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 22px; }
.contact-list .ci {
  flex: none; width: 44px; height: 44px; border-radius: 12px;
  background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .28);
  display: grid; place-items: center; color: var(--cyan);
}
.contact-list b { display: block; font-size: 13px; color: var(--text-3); font-weight: 500; letter-spacing: 1px; }
.contact-list span { font-size: 16.5px; font-weight: 600; }
.contact-qr { text-align: center; align-self: center; }
.contact-qr img {
  width: 168px; height: 168px; object-fit: cover; margin: 0 auto 14px;
  border-radius: 16px; border: 1px solid var(--card-border); padding: 8px; background: #fff;
}
.contact-qr p { color: var(--text-2); font-size: 14px; }

/* ===== 页脚 ===== */
.footer { border-top: 1px solid rgba(148, 178, 255, .1); padding: 44px 0 36px; background: var(--bg-2); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer .logo-img { height: 42px; }
.footer-links { display: flex; gap: 22px; font-size: 14px; color: var(--text-2); flex-wrap: wrap; }
.footer-links a:hover { color: var(--cyan); }
.footer-copy { margin-top: 26px; padding-top: 22px; border-top: 1px solid rgba(148, 178, 255, .07); text-align: center; color: var(--text-3); font-size: 13px; }
.footer-copy a { color: var(--text-3); }
.footer-copy a:hover { color: var(--cyan); }

/* ===== 二级页 ===== */
.page-hero {
  position: relative; padding: calc(var(--nav-h) + 90px) 0 80px;
  overflow: hidden; text-align: center;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(560px 380px at 50% -10%, rgba(34, 211, 238, .16), transparent 65%),
    radial-gradient(500px 380px at 85% 110%, rgba(139, 92, 246, .12), transparent 65%);
  pointer-events: none;
}
.page-hero .hero-grid { opacity: .6; }
.page-hero h1 { position: relative; font-size: clamp(30px, 4.6vw, 50px); font-weight: 800; letter-spacing: 1px; margin-bottom: 18px; }
.page-hero p { position: relative; max-width: 660px; margin: 0 auto; color: var(--text-2); font-size: 16.5px; }
.crumb { position: relative; display: inline-flex; gap: 8px; font-size: 13.5px; color: var(--text-3); margin-bottom: 24px; letter-spacing: .5px; }
.crumb a:hover { color: var(--cyan); }

.prose { max-width: 860px; margin: 0 auto; }
.prose-block {
  padding: 40px 44px; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--card-border);
  margin-bottom: 26px;
}
.prose-block h2 {
  font-size: 22px; font-weight: 800; margin-bottom: 18px;
  display: flex; align-items: center; gap: 12px;
}
.prose-block h2::before { content: ""; width: 5px; height: 22px; border-radius: 3px; background: var(--grad); }
.prose-block p { color: var(--text-2); font-size: 15.5px; margin-bottom: 12px; }
.prose-block p:last-child { margin-bottom: 0; }
.company-photo { width: 100%; border-radius: 14px; border: 1px solid var(--card-border); }
.photo-caption { text-align: center; color: var(--text-3); font-size: 13.5px; margin-top: 16px; }
.check-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 8px; }
.check-grid li {
  display: flex; gap: 10px; align-items: center; font-size: 14.5px;
  padding: 13px 18px; border-radius: 12px;
  background: rgba(6, 11, 26, .5); border: 1px solid var(--card-border);
}
.check-grid li::before {
  content: "✓"; flex: none; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(34, 211, 238, .14); color: var(--cyan);
  display: grid; place-items: center; font-size: 12px; font-weight: 700;
}

.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.detail-grid .card { padding: 30px 24px; }

.cta-band {
  position: relative; margin: 90px auto 0; text-align: center;
  padding: 60px 40px; border-radius: 26px; overflow: hidden;
  border: 1px solid rgba(34, 211, 238, .3);
  background:
    radial-gradient(480px 260px at 15% 0%, rgba(34, 211, 238, .18), transparent 60%),
    radial-gradient(480px 280px at 90% 100%, rgba(139, 92, 246, .18), transparent 60%),
    var(--bg-3);
}
.cta-band h2 { font-size: clamp(24px, 3.2vw, 34px); font-weight: 800; margin-bottom: 14px; }
.cta-band p { color: var(--text-2); margin-bottom: 30px; }

/* 时间线 */
.timeline { position: relative; max-width: 720px; margin: 0 auto; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--cyan), var(--violet)); opacity: .5; }
.timeline li { position: relative; padding-bottom: 34px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -32px; top: 7px; width: 14px; height: 14px;
  border-radius: 50%; background: var(--bg); border: 3px solid var(--cyan);
  box-shadow: 0 0 12px rgba(34, 211, 238, .6);
}
.timeline b { display: block; font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.timeline b em { font-style: normal; color: var(--cyan); margin-right: 10px; }
.timeline p { color: var(--text-2); font-size: 14.5px; }

/* ===== 滚动动画 ===== */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s cubic-bezier(.2, .6, .2, 1), transform .8s cubic-bezier(.2, .6, .2, 1); }
.reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .1s; }
.reveal.d2 { transition-delay: .2s; }
.reveal.d3 { transition-delay: .3s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .orbit-ring, .orbit-tags b, .hero-badge::before { animation: none; }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-grid, .detail-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .about-wrap { grid-template-columns: 1fr; gap: 44px; }
  .about-visual { max-width: 520px; margin: 0 auto; width: 100%; }
}
@media (max-width: 768px) {
  .section { padding: 78px 0; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; padding: 40px 28px; }
  .prose-block { padding: 28px 22px; }
  .check-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: rgba(6, 11, 26, .97); backdrop-filter: blur(16px);
    padding: 16px 4% 24px; border-bottom: 1px solid var(--card-border);
    transform: translateY(-130%); transition: transform .4s cubic-bezier(.2, .7, .2, 1);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 13px 18px; font-size: 16px; }
  .nav-cta { margin: 8px 0 0; text-align: center; }
}
@media (max-width: 560px) {
  .feat-grid, .sol-grid, .detail-grid, .partner-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .footer-inner { flex-direction: column; text-align: center; }
}