:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --surface-soft: #eef4f2;
  --border: #d7e0e4;
  --text: #17202a;
  --muted: #526170;
  --accent: #0f766e;
  --sky: #2278bf;
  --violet: #7056b8;
  --coral: #c95f51;
  --green: #287f5b;
  --amber: #ad7514;
  --teal: #0f766e;
  --radius: 8px;
  --radius-lg: 18px;
  --shadow: 0 12px 28px rgba(16,24,40,0.08);
  --shadow-sm: 0 6px 14px rgba(16,24,40,0.06);
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #fbfcfe 0%, #f4f7f8 56%, #f7f8fb 100%);
  line-height: 1.65;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
.container { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(247,248,251,0.84);
  border-bottom: 1px solid rgba(217,225,234,0.8);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 0; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, #0f766e, #2278bf); color: white; font-size: 1.2rem; font-weight: 800;
  box-shadow: var(--shadow-sm);
}
.brand-text { font-weight: 800; font-size: 1.15rem; letter-spacing: 0; }
.brand-text span { color: var(--accent); }
.nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.nav a {
  text-decoration: none; color: var(--muted); padding: 10px 14px; border-radius: 999px;
  font-weight: 600; font-size: .95rem;
}
.nav a:hover, .nav a.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm); }
.nav .cta { background: var(--accent); color: #fff; }
.nav .cta:hover { background: #1d4ed8; color: #fff; }
.hero { padding: 76px 0 34px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: center; }
.hero-copy h1 { font-size: 4.05rem; line-height: 1.04; letter-spacing: 0; margin: 0 0 16px; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; padding: 8px 14px;
  background: #eef4ff; color: #1e4fd1; border-radius: 999px; font-weight: 700; font-size: .88rem;
}
.hero-copy p.lead, .lead { font-size: 1.08rem; color: var(--muted); max-width: 66ch; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.button {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none; cursor: pointer;
  background: var(--text); color: #fff; padding: 13px 18px; border-radius: 999px; font-weight: 700;
  box-shadow: var(--shadow-sm);
}
.button.secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.hero-panel, .card, .app-hero-screen, .metric, .guide-card, .faq, .callout, .article-card, .policy-box, .table-wrap {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-sm);
}
.hero-panel { padding: 18px; }
.hero-panel-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; }
.metric { padding: 18px; }
.metric strong { display: block; font-size: 1.6rem; letter-spacing: 0; }
.metric span { color: var(--muted); font-size: .95rem; }
.section { padding: 30px 0; }
.section-head { display: flex; justify-content: space-between; gap: 16px; align-items: end; margin-bottom: 20px; }
.section-head h2 { font-size: 2.25rem; margin: 0; letter-spacing: 0; }
.section-head p { margin: 0; color: var(--muted); max-width: 60ch; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.app-card { overflow: hidden; display: flex; flex-direction: column; }
.app-card .thumb-wrap { background: linear-gradient(180deg, #ecf2fb, #f8fbff); padding: 18px; }
.app-card .thumb { border-radius: 16px; overflow: hidden; max-width: 230px; margin: 0 auto; box-shadow: var(--shadow); }
.app-card .content { padding: 20px 20px 22px; display: flex; flex-direction: column; gap: 12px; height: 100%; }
.app-card.featured { grid-column: span 2; flex-direction: row; }
.app-card.featured .thumb-wrap { flex: 0 0 42%; display: grid; place-items: center; }
.app-card.featured .content { justify-content: center; }
.badges, .tag-row { display: flex; gap: 8px; flex-wrap: wrap; }
.badge, .tag {
  display: inline-flex; align-items: center; gap: 7px; padding: 7px 11px; border-radius: 999px; font-size: .83rem; font-weight: 700;
  background: var(--surface-soft); color: var(--muted); border: 1px solid var(--border);
}
.app-card h3 { margin: 0; font-size: 1.28rem; letter-spacing: 0; }
.app-card.featured h3 { font-size: 1.7rem; }
.app-card p { margin: 0; color: var(--muted); }
.eyebrow { color: var(--muted); text-transform: uppercase; letter-spacing: 0; font-size: .77rem; font-weight: 800; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.list { margin: 0; padding-left: 18px; }
.list li { margin: 0 0 8px; }
.band {
  margin: 26px 0; padding: 22px; border-radius: calc(var(--radius) + 6px);
  background: linear-gradient(135deg, rgba(37,99,235,.08), rgba(37,99,235,.02)); border: 1px solid rgba(37,99,235,.16);
}
.site-footer { margin-top: 56px; padding: 28px 0 46px; border-top: 1px solid var(--border); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .9fr .9fr .9fr; gap: 18px; }
.footer-grid h4 { margin: 0 0 10px; }
.footer-grid a { display: block; color: var(--muted); text-decoration: none; margin: 8px 0; }
.footer-grid a:hover { color: var(--text); }
.footer-note { color: var(--muted); margin-top: 18px; font-size: .92rem; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.page-hero { padding: 54px 0 20px; }
.breadcrumbs { color: var(--muted); font-size: .92rem; margin-bottom: 14px; }
.breadcrumbs a { color: inherit; text-decoration: none; }
.page-hero h1 { font-size: 3.45rem; line-height: 1.06; letter-spacing: 0; margin: 0 0 14px; }
.page-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 28px; align-items: start; }
.app-hero-screen { padding: 18px; }
.device-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.device-grid img, .gallery-grid img {
  width: 100%; height: auto; border-radius: 16px; box-shadow: var(--shadow); border: 1px solid rgba(0,0,0,0.04);
}
.gallery-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 14px; }
.content-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
.content-grid .card, .faq, .callout, .article-card, .policy-box, .table-wrap { padding: 22px; }
.content-grid h2, .article h2, .policy-box h2, .table-wrap h2 { margin-top: 0; font-size: 1.5rem; letter-spacing: 0; }
.details-list { margin: 0; padding-left: 18px; }
.details-list li { margin-bottom: 8px; }
.faq details { border-top: 1px solid var(--border); padding: 12px 0; }
.faq details:first-child { border-top: 0; padding-top: 0; }
.faq summary { cursor: pointer; font-weight: 700; }
.article { max-width: 800px; }
.article .intro { font-size: 1.1rem; color: var(--muted); }
.article section { margin: 0 0 20px; }
.article-card + .article-card { margin-top: 18px; }
.article-card h3 { margin-top: 0; font-size: 1.2rem; }
.callout h3 { margin-top: 0; }
.policy-grid { display: grid; gap: 18px; }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.table-wrap th, .table-wrap td { padding: 12px 10px; border-bottom: 1px solid var(--border); text-align: left; }
.table-wrap tr:last-child td { border-bottom: 0; }
.info-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.mini-card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 16px; box-shadow: var(--shadow-sm); }
.notice { color: var(--muted); font-size: .95rem; }
.trust-strip { padding: 6px 0 24px; }
.trust-strip .container {
  display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px;
}
.trust-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px;
}
.trust-item strong { display: block; font-size: .95rem; }
.trust-item span { color: var(--muted); font-size: .88rem; }
.feature-list { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.feature-list div { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; background: var(--surface-soft); }
.feature-list h3, .mini-card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.feature-list p, .mini-card p { margin: 0; color: var(--muted); }
.inline-table { box-shadow: none; margin: 14px 0 18px; overflow-x: auto; }
.check-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; margin-top: 14px; }
.article-meta { color: var(--muted); font-size: .9rem; margin-top: 16px; }
.resource-list { display: grid; gap: 14px; }
.resource-row {
  display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: center;
  padding: 16px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface);
}
.resource-row h3 { margin: 0 0 6px; }
.resource-row p { margin: 0; color: var(--muted); }
.seo-note {
  background: #eef4f2; border: 1px solid #c8ded9; border-radius: var(--radius); padding: 18px;
}
.theme-sky { --accent: var(--sky); }
.theme-violet { --accent: var(--violet); }
.theme-coral { --accent: var(--coral); }
.theme-green { --accent: var(--green); }
.theme-amber { --accent: var(--amber); }
.theme-teal { --accent: var(--teal); }
.theme-sky .kicker, .theme-sky .button.cta, .theme-sky .accent-block { background: rgba(41,146,255,.1); color: var(--sky); }
.theme-violet .kicker, .theme-violet .button.cta, .theme-violet .accent-block { background: rgba(124,89,255,.1); color: var(--violet); }
.theme-coral .kicker, .theme-coral .button.cta, .theme-coral .accent-block { background: rgba(239,111,94,.12); color: var(--coral); }
.theme-green .kicker, .theme-green .button.cta, .theme-green .accent-block { background: rgba(47,154,109,.12); color: var(--green); }
.theme-amber .kicker, .theme-amber .button.cta, .theme-amber .accent-block { background: rgba(196,135,25,.12); color: var(--amber); }
.theme-teal .kicker, .theme-teal .button.cta, .theme-teal .accent-block { background: rgba(22,128,137,.12); color: var(--teal); }
.site-header .accent-link { color: var(--accent); }
@media (max-width: 980px) {
  .hero-grid, .page-grid, .content-grid, .split, .footer-grid { grid-template-columns: 1fr; }
  .cards, .info-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .gallery-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .app-card.featured { grid-column: span 1; flex-direction: column; }
  .trust-strip .container, .check-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hero-copy h1 { font-size: 3.1rem; }
  .page-hero h1 { font-size: 2.8rem; }
}
@media (max-width: 680px) {
  .site-header .container { align-items: flex-start; }
  .nav { justify-content: flex-start; }
  .cards, .info-grid, .gallery-grid, .hero-panel-grid, .device-grid, .trust-strip .container, .feature-list, .check-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 40px; }
  .page-hero { padding-top: 34px; }
  .container { width: min(var(--max), calc(100% - 22px)); }
  .content-grid .card, .faq, .callout, .article-card, .policy-box, .table-wrap { padding: 18px; }
  .hero-copy h1 { font-size: 2.45rem; }
  .page-hero h1 { font-size: 2.25rem; }
  .section-head h2 { font-size: 1.8rem; }
  .resource-row { grid-template-columns: 1fr; }
}