/* Responsive hardening pass: tablet, phone and small-laptop layouts. */

@media (max-width: 1100px) {
  .container {
    width: min(100% - 40px, 1040px);
  }

  .nav-links {
    gap: 18px;
    font-size: 13px;
  }

  .hero {
    padding: 72px 0 78px;
  }

  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 42px;
  }

  h1 {
    font-size: clamp(46px, 6vw, 64px);
  }

  .system-map {
    min-height: 390px;
  }

  .map-node {
    width: 142px;
    padding: 14px;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card {
    min-height: 270px;
  }

  .downloads {
    grid-template-columns: 1fr;
  }

  .download-card p {
    min-height: 0;
  }
}

@media (max-width: 900px) {
  html {
    scroll-padding-top: 78px;
  }

  .container {
    width: min(100% - 36px, 760px);
  }

  .nav {
    position: relative;
    min-height: 72px;
    gap: 16px;
  }

  .brand {
    position: relative;
    z-index: 3;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

  .nav-toggle {
    position: relative;
    z-index: 3;
    display: inline-grid;
    place-items: center;
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 12px;
    background: rgba(255,255,255,.035);
    color: #fff;
    cursor: pointer;
    line-height: 1;
  }

  .nav-toggle:focus-visible {
    outline: 3px solid rgba(86,229,143,.35);
    outline-offset: 3px;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 1px);
    left: 18px;
    right: 18px;
    z-index: 2;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    max-height: calc(100vh - 92px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 14px;
    border: 1px solid rgba(86,229,143,.15);
    border-radius: 18px;
    background: rgba(5,15,10,.98);
    box-shadow: 0 22px 60px rgba(0,0,0,.35);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a:not(.btn) {
    padding: 12px 13px;
    border-radius: 10px;
  }

  .nav-links a:not(.btn)::after {
    display: none;
  }

  .nav-links a:not(.btn):hover {
    background: rgba(32,199,101,.07);
  }

  .nav-links .btn {
    width: 100%;
    margin-top: 6px;
  }

  .hero {
    padding: 62px 0 70px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  h1 {
    max-width: 690px;
    font-size: clamp(48px, 9vw, 68px);
  }

  .hero p {
    max-width: 650px;
  }

  .hero-card {
    width: 100%;
    max-width: 680px;
    justify-self: center;
  }

  .system-map {
    min-height: 410px;
  }

  .section,
  .solution-showcase,
  .principles,
  .contact-section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .split {
    grid-template-columns: 1fr;
  }

  .solution-row,
  .solution-row:nth-child(even) {
    grid-template-columns: 1fr;
  }

  .solution-row:nth-child(even) .solution-copy,
  .solution-row:nth-child(even) .solution-visual {
    order: initial;
  }

  .solution-copy {
    padding: 34px;
  }

  .solution-visual {
    min-height: 290px;
  }

  .principle-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-row {
    gap: 18px;
    flex-wrap: wrap;
  }
}

@media (max-width: 620px) {
  html {
    scroll-padding-top: 70px;
  }

  .container {
    width: min(100% - 28px, 560px);
  }

  .site-header {
    border-top-width: 2px;
  }

  .nav {
    min-height: 68px;
  }

  .nav-toggle {
    flex-basis: 42px;
    width: 42px;
    height: 42px;
    border-radius: 11px;
  }

  .brand {
    gap: 10px;
    font-size: 15px;
  }

  .brand small {
    font-size: 8px;
    letter-spacing: .14em;
  }

  .nav-links {
    left: 14px;
    right: 14px;
  }

  .hero {
    padding: 48px 0 56px;
  }

  h1 {
    margin-top: 11px;
    font-size: clamp(40px, 12.4vw, 58px);
    line-height: 1.01;
    letter-spacing: -.045em;
    overflow-wrap: break-word;
  }

  .hero p,
  .section-head p,
  .section-copy,
  .solution-copy p {
    font-size: 16px;
  }

  .hero-actions {
    width: 100%;
    gap: 10px;
    margin-top: 25px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
    width: 100%;
  }

  .hero-actions .status-pill {
    width: 100%;
    justify-content: center;
    min-height: 42px;
    text-align: center;
  }

  .hero-points {
    display: grid;
    grid-template-columns: 1fr;
    gap: 9px;
    margin-top: 24px;
  }

  .hero-card {
    padding: 18px;
    border-radius: 24px;
  }

  .system-map {
    min-height: 470px;
  }

  .map-core {
    width: 116px;
    height: 116px;
    font-size: 12px;
    box-shadow: 0 0 0 10px rgba(32,199,101,.08), 0 0 0 22px rgba(32,199,101,.035), 0 16px 38px rgba(0,0,0,.26);
  }

  .map-node {
    width: calc(50% - 13px);
    padding: 12px;
    border-radius: 14px;
  }

  .map-node strong {
    font-size: 13px;
  }

  .map-node small {
    font-size: 11px;
  }

  .node-a { left: 0; top: 22px; }
  .node-b { right: 0; top: 42px; }
  .node-c { left: 0; bottom: 34px; }
  .node-d { right: 0; bottom: 16px; }

  .section,
  .solution-showcase,
  .principles,
  .contact-section {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .section-head {
    margin-bottom: 30px;
  }

  .section h2,
  .contact-info h2,
  .contact-form-wrap h2 {
    font-size: clamp(32px, 10vw, 44px);
    overflow-wrap: break-word;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: 0;
    padding: 24px;
  }

  .panel,
  .solution-copy,
  .contact-info,
  .contact-form-wrap {
    padding: 25px;
    border-radius: 22px;
  }

  .downloads {
    grid-template-columns: 1fr;
  }

  .solution-visual {
    min-height: 260px;
    padding: 20px;
  }

  .visual-board {
    grid-template-columns: 1fr;
  }

  .visual-tile,
  .visual-tile.wide {
    grid-column: auto;
    min-height: 0;
  }

  .solution-tags {
    gap: 7px;
  }

  .principle {
    padding: 24px;
  }

  .contact-form {
    grid-template-columns: 1fr;
  }

  .form-field.full,
  .contact-form-actions {
    grid-column: auto;
  }

  .contact-form-actions {
    align-items: stretch;
  }

  .contact-form-actions .btn {
    width: 100%;
  }

  .form-field input,
  .form-field select,
  .form-field textarea {
    font-size: 16px;
  }

  .form-status {
    line-height: 1.45;
  }

  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 14px;
  }
}

@media (max-width: 420px) {
  .container {
    width: calc(100% - 22px);
  }

  .nav {
    gap: 8px;
  }

  .hero-card {
    padding: 14px;
  }

  .system-map {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    min-height: 0;
  }

  .system-map::before,
  .system-map::after {
    display: none;
  }

  .map-core,
  .map-node,
  .node-a,
  .node-b,
  .node-c,
  .node-d {
    position: static;
    inset: auto;
    transform: none;
  }

  .map-core {
    order: -1;
    width: 104px;
    height: 104px;
    margin: 4px auto 8px;
    font-size: 11px;
  }

  .map-node {
    width: 100%;
    min-height: 0;
    padding: 13px 14px;
  }

  .map-node::before {
    margin-bottom: 7px;
  }

  .map-node small {
    font-size: 11px;
  }

  .panel,
  .solution-copy,
  .contact-info,
  .contact-form-wrap,
  .principle,
  .card {
    padding-left: 21px;
    padding-right: 21px;
  }

  .contact-detail {
    padding: 15px;
  }

  .contact-detail a,
  .contact-detail strong {
    overflow-wrap: anywhere;
  }
}

@media (max-width: 340px) {
  .container {
    width: calc(100% - 18px);
  }

  h1 {
    font-size: 38px;
  }

  .panel,
  .solution-copy,
  .contact-info,
  .contact-form-wrap,
  .principle,
  .card {
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (hover: none) {
  .card:hover,
  .btn-primary:hover,
  .btn-secondary:hover {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}