/* The same sections stack cleanly on tablets and narrow mobile screens. */
@media (max-width: 1023px) {
    .main-nav { gap: 20px; font-size: 15px; }
    .feature-card { padding: 28px; }
    .card-heading { gap: 12px; }
    .card-heading h3 { font-size: 21px; }
    .card-icon { flex-basis: 52px; height: 52px; }
    .tip-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .file-grid { gap: 24px; }
    .address-file { padding: 40px; }
}
@media (max-width: 767px) {
    .container { width: calc(100% - 36px); }
    .header-inner { width: calc(100% - 36px); flex-wrap: wrap; gap: 0; min-height: 62px; }
    .brand { font-size: 25px; }
    .main-nav { width: 100%; justify-content: space-between; padding: 14px 0 4px; gap: 10px; font-size: 13px; }
    .js .menu-toggle { display: flex; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; padding: 10px; border: 0; background: none; color: #fff; cursor: pointer; }
    .menu-toggle span { display: block; width: 24px; height: 2px; background: currentColor; }
    .js .main-nav { display: none; }
    .js .main-nav.is-open { display: flex; }
    .hero { min-height: 610px; height: calc(100svh - 64px); }
    .hero h1 { font-size: clamp(31px, 6.1vw, 44px); letter-spacing: -1px; line-height: 1.35; }
    .hero-heading { padding-bottom: 32px; }
    .hero-badge { margin-bottom: 26px; font-size: 11px; }
    .hero-address { font-size: 12px; }
    .section { padding: 64px 0; }
    .section-heading { margin-bottom: 36px; }
    .section-heading p { font-size: 15px; }
    .quick-grid, .connection-grid, .mobile-grid, .file-grid { grid-template-columns: minmax(0, 1fr); }
    .feature-card { padding: 26px; }
    .steps { display: block; }
    .step:nth-child(odd), .step:nth-child(even) { text-align: left; }
    .step + .step { margin-top: 36px; }
    .step h3 { font-size: 23px; }
    .connection-section { padding: 95px 0; clip-path: polygon(0 2%, 100% 0, 100% 98%, 0 100%); }
    .connection-grid { gap: 36px; }
    .connection-intro { text-align: center; }
    .connection-intro h2 { font-size: 44px; }
    .connection-intro p { font-size: 18px; }
    .connection-list { transform: rotate(1deg); padding: 24px; }
    .simple-section { padding-block: 64px; }
    .simple-section h2 { font-size: 30px; letter-spacing: 1px; }
    .simple-section .section-heading p { font-size: 26px; }
    .ticker-track span { font-size: 27px; }
    .ticker-red .ticker-track span { font-size: 22px; }
    .mobile-grid { gap: 48px; }
    .phone { order: -1; }
    .mobile-copy { text-align: center; }
    .handwritten { font-size: 28px; }
    .checklist { text-align: left; font-size: 14px; }
    .chalkboard { padding: 26px 20px; border-width: 6px; }
    .chalkboard h3 { font-size: 28px; }
    .chalkboard p { padding-left: 8px; font-size: 24px; }
    .notebook { padding: 32px 20px 32px 42px; transform: none; }
    .notebook h3 { font-size: 18px; }
    .notebook p { font-size: 25px; }
    .notebook::before { width: 21px; }
    .address-file { padding: 32px 22px; }
    .file-stamp { font-size: 16px; top: 16px; right: 15px; border-width: 3px; }
    .file-heading { padding-top: 37px; margin-bottom: 30px; }
    .file-heading h2 { font-size: 29px; }
    .file-grid { gap: 34px; }
    .address-card { text-align: center; }
    .domain { font-size: clamp(25px, 7.5vw, 34px); }
    .final-section h2 { font-size: 30px; }
    .final-actions { flex-direction: column; align-items: center; }
    .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 36px 24px; }
    .footer-grid > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 420px) {
    .tip-grid { grid-template-columns: minmax(0, 1fr); gap: 18px; }
    .tip-card summary { min-height: 220px; }
    .card-heading h3 { font-size: 20px; }
    .tags span { padding-inline: 9px; font-size: 12px; }
    .footer-grid { grid-template-columns: minmax(0, 1fr); }
}