:root {
  --bg: #080c0f;
  --panel: #1b2023;
  --panel-soft: rgba(27, 32, 35, 0.9);
  --blue: #1e88e5;
  --cyan: #4da3ff;
  --white: #ffffff;
  --muted: #a5adb4;
  --dim: #7f878d;
  --line: rgba(30, 136, 229, 0.32);
  --line-soft: rgba(30, 136, 229, 0.18);
  --shadow: 0 30px 110px rgba(0, 0, 0, 0.58);
  --glow: 0 0 0 1px rgba(30, 136, 229, 0.12), 0 0 32px rgba(30, 136, 229, 0.16);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--white);
  background:
    radial-gradient(ellipse 80% 26% at 50% 22%, rgba(30, 75, 160, 0.14), transparent 72%),
    linear-gradient(180deg, #0b0f12 0%, #080c0f 52%, #0b0f12 100%);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: geometricPrecision;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

img,
svg {
  display: block;
}

svg {
  max-width: 100%;
  max-height: 100%;
}

.page {
  position: relative;
  min-height: 100vh;
  padding: 49px 0 60px;
  overflow-x: clip;
}

.site-header,
main {
  width: min(1556px, calc(100% - 342px));
  margin-inline: auto;
}

.site-header {
  min-height: 169px;
  padding: 28px 34px 28px 31px;
  border: 1px solid rgba(77, 163, 255, 0.17);
  border-radius: 45px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  background:
    linear-gradient(180deg, rgba(32, 38, 41, 0.96), rgba(24, 29, 32, 0.96));
  box-shadow: var(--shadow), var(--glow);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 23px;
  min-width: 0;
}

.brand-logo {
  width: 96px;
  height: 96px;
  min-width: 96px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(77, 163, 255, 0.4);
  background:
    url("../images/edufeed24-logo.png") center / 78px 78px no-repeat,
    radial-gradient(circle, rgba(30, 136, 229, 0.22), rgba(7, 11, 14, 0.96) 67%);
  box-shadow: 0 0 30px rgba(30, 136, 229, 0.24);
}

.brand-logo img {
  width: 78px;
  height: 78px;
  object-fit: contain;
}

.brand-copy {
  display: grid;
  gap: 9px;
}

.brand-copy strong {
  font-size: clamp(30px, 2.35vw, 45px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-copy span {
  color: var(--muted);
  font-size: clamp(16px, 1.28vw, 24px);
  line-height: 1.18;
  font-weight: 450;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 17px;
  flex-wrap: wrap;
}

.socials,
.footer-socials {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 17px;
}

.social {
  width: 72px;
  height: 72px;
  min-width: 72px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(12, 17, 20, 0.77);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.social svg {
  width: 30px;
  height: 30px;
  fill: currentColor;
}

.social:hover {
  transform: scale(1.05);
}

.social-youtube {
  color: #ff0000;
  border: 1px solid rgba(255, 0, 0, 0.58);
  box-shadow: 0 0 18px rgba(255, 0, 0, 0.25);
}

.social-youtube:hover {
  box-shadow: 0 0 28px rgba(255, 0, 0, 0.42);
}

.social-facebook {
  color: #1877f2;
  border: 1px solid rgba(24, 119, 242, 0.58);
  box-shadow: 0 0 18px rgba(24, 119, 242, 0.25);
}

.social-facebook:hover {
  box-shadow: 0 0 28px rgba(24, 119, 242, 0.4);
}

.social-linkedin {
  color: #0a66c2;
  border: 1px solid rgba(10, 102, 194, 0.58);
  box-shadow: 0 0 18px rgba(10, 102, 194, 0.24);
}

.social-linkedin:hover {
  box-shadow: 0 0 28px rgba(10, 102, 194, 0.4);
}

.social-tiktok {
  color: #69c9d0;
  border: 1px solid rgba(105, 201, 208, 0.58);
  box-shadow: 0 0 18px rgba(105, 201, 208, 0.22);
}

.social-tiktok:hover {
  box-shadow: 0 0 28px rgba(105, 201, 208, 0.36);
}

.header-button,
.hero-button {
  min-height: 72px;
  border-radius: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  line-height: 1;
  font-weight: 760;
  white-space: nowrap;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.header-button {
  min-width: 222px;
  padding: 0 29px;
}

.header-button-blue {
  color: var(--blue);
  border: 2px solid rgba(30, 136, 229, 0.92);
  background: rgba(10, 15, 18, 0.24);
  box-shadow: 0 0 18px rgba(30, 136, 229, 0.12);
}

.header-button-light {
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.27);
  background: rgba(255, 255, 255, 0.02);
}

.header-button:hover,
.hero-button:hover {
  transform: translateY(-2px);
}

.header-button-blue:hover {
  box-shadow: 0 0 28px rgba(30, 136, 229, 0.32);
}

.header-button-light:hover {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.055);
}

main {
  display: block;
}

.hero {
  padding: 149px 20px 121px;
  text-align: center;
}

.kicker {
  margin: 0 0 32px;
  color: var(--blue);
  font-size: clamp(16px, 1.16vw, 22px);
  font-weight: 800;
  letter-spacing: 0.15em;
}

.hero h1 {
  margin: 0;
  color: var(--white);
  font-size: clamp(45px, 4.36vw, 84px);
  line-height: 1.09;
  font-weight: 820;
  letter-spacing: 0;
}

.hero-copy {
  width: min(1110px, 100%);
  margin: 33px auto 0;
  color: var(--muted);
  font-size: clamp(19px, 1.43vw, 27px);
  line-height: 1.62;
  font-weight: 440;
}

.hero-actions {
  margin-top: 49px;
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
}

.hero-button {
  min-width: 245px;
  padding: 0 34px;
}

.hero-button-white {
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.86);
  background: transparent;
}

.hero-button-white:hover {
  color: #0b0f12;
  background: var(--white);
}

.hero-button-blue {
  color: var(--blue);
  border: 2px solid rgba(30, 136, 229, 0.92);
  background: transparent;
}

.hero-button-blue:hover {
  color: var(--white);
  background: var(--blue);
  box-shadow: 0 0 28px rgba(30, 136, 229, 0.36);
}

.platforms {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 31px;
  padding-top: 12px;
}

.platform-card {
  min-height: 294px;
  border: 1px solid var(--line);
  border-radius: 31px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 26px;
  color: var(--white);
  background: linear-gradient(180deg, rgba(30, 36, 39, 0.94), rgba(23, 28, 31, 0.95));
  box-shadow: var(--shadow), 0 0 0 1px rgba(30, 136, 229, 0.09), 0 0 24px rgba(30, 136, 229, 0.09);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.platform-card:hover {
  transform: translateY(-5px);
  border-color: rgba(30, 136, 229, 0.72);
  background: linear-gradient(180deg, rgba(30, 69, 104, 0.84), rgba(26, 45, 61, 0.9));
  box-shadow: var(--shadow), 0 0 0 1px rgba(30, 136, 229, 0.4), 0 0 38px rgba(30, 136, 229, 0.28);
}

.platform-icon {
  width: 52px;
  height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
}

.platform-card > span:last-child {
  display: block;
  font-size: clamp(47px, 3.82vw, 73px);
  line-height: 1;
  font-weight: 780;
  letter-spacing: 0;
}

.ai-section {
  position: relative;
  margin-top: 71px;
  scroll-margin-top: 29px;
  border: 1px solid var(--line-soft);
  border-radius: 36px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(14, 18, 22, 0.96), rgba(8, 12, 15, 0.98));
  box-shadow: var(--shadow), var(--glow);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

.ai-atmosphere {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 62% 45% at 50% 54%, rgba(30, 72, 178, 0.46), rgba(15, 32, 95, 0.22) 38%, rgba(8, 12, 15, 0) 72%),
    radial-gradient(circle at 50% 45%, rgba(77, 163, 255, 0.18), transparent 43%);
  pointer-events: none;
}

.ai-panel {
  position: relative;
  z-index: 1;
  padding: 37px 42px 50px;
  text-align: center;
}

.ai-panel h2 {
  margin: 0;
  color: var(--blue);
  font-size: 50px;
  line-height: 1.05;
  font-weight: 820;
}

.ai-copy {
  width: min(1240px, 100%);
  margin: 21px auto 0;
  color: var(--muted);
  font-size: 24px;
  line-height: 1.45;
}

.ai-thread {
  width: min(1038px, 100%);
  margin: 43px auto 0;
  padding: 27px;
  border: 1px solid rgba(30, 136, 229, 0.26);
  border-radius: 31px;
  background: rgba(16, 21, 25, 0.62);
  box-shadow: 0 0 0 1px rgba(30, 136, 229, 0.08), 0 0 36px rgba(30, 136, 229, 0.18);
}

.question-form,
.followup-form {
  min-height: 98px;
  padding: 10px 12px 10px 34px;
  border: 1px solid rgba(30, 136, 229, 0.45);
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 18px;
  background: rgba(22, 26, 29, 0.95);
  box-shadow: 0 0 0 1px rgba(30, 136, 229, 0.12), 0 0 21px rgba(30, 136, 229, 0.18);
}

.question-form input,
.followup-form input {
  min-width: 0;
  width: 100%;
  border: 0;
  outline: 0;
  color: var(--white);
  background: transparent;
  font-size: clamp(16px, 1.08vw, 21px);
}

.question-form input::placeholder,
.followup-form input::placeholder {
  color: rgba(165, 173, 180, 0.78);
}

.question-form button,
.followup-form button {
  width: 62px;
  height: 62px;
  min-width: 62px;
  border: 0;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  background: var(--blue);
  font-size: 31px;
  line-height: 1;
  box-shadow: 0 0 19px rgba(30, 136, 229, 0.32);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.question-form button:hover,
.followup-form button:hover {
  transform: scale(1.05);
  box-shadow: 0 0 28px rgba(30, 136, 229, 0.44);
}

.chip-row {
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 13px;
}

.chip-row button {
  min-height: 50px;
  border: 1px solid rgba(77, 163, 255, 0.22);
  border-radius: 999px;
  padding: 10px 18px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.035);
  font-size: 17px;
  transition: color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.chip-row button:hover {
  color: var(--white);
  border-color: rgba(77, 163, 255, 0.48);
  box-shadow: 0 0 20px rgba(30, 136, 229, 0.18);
}

.ai-response article {
  margin-top: 28px;
  padding: 28px;
  border: 1px solid rgba(30, 136, 229, 0.3);
  border-radius: 28px;
  color: var(--muted);
  text-align: left;
  background: rgba(18, 23, 27, 0.88);
  box-shadow: 0 0 0 1px rgba(30, 136, 229, 0.1), 0 0 28px rgba(30, 136, 229, 0.14);
  animation: fadeIn 0.28s ease both;
}

.ai-response h3,
.ai-response h4 {
  margin: 0;
  color: var(--white);
}

.ai-response p {
  margin: 10px 0 0;
  line-height: 1.72;
  font-size: 16px;
}

.response-label,
.demo-label {
  margin-top: 0 !important;
  color: var(--cyan);
  font-size: 12px !important;
  font-weight: 820;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.demo-label {
  margin-top: 24px !important;
}

.action-row {
  margin: 20px 0 9px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}

.action-row button {
  position: relative;
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.76);
  background: transparent;
  transition: transform 0.22s ease, color 0.22s ease, box-shadow 0.22s ease;
}

.action-row button:hover,
.action-row button.is-active {
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 0 18px rgba(30, 136, 229, 0.24);
}

.action-row button::after {
  content: attr(aria-label);
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  opacity: 0;
  pointer-events: none;
  padding: 7px 10px;
  border: 1px solid rgba(77, 163, 255, 0.2);
  border-radius: 999px;
  color: var(--white);
  background: rgba(8, 12, 15, 0.96);
  white-space: nowrap;
  font-size: 12px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.action-row button:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.action-row svg {
  width: 22px;
  height: 22px;
}

.action-status {
  min-height: 19px;
  margin: 0 0 12px !important;
  color: var(--cyan) !important;
  font-size: 13px !important;
}

.reference-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 15px 0 18px;
}

.reference {
  flex: 1 1 240px;
}

.reference > button {
  width: 100%;
  min-height: 42px;
  border: 1px solid rgba(77, 163, 255, 0.18);
  border-radius: 14px;
  padding: 10px 13px;
  color: var(--muted);
  text-align: left;
  background: rgba(255, 255, 255, 0.03);
}

.reference-panel {
  display: none;
  margin-top: 9px;
  padding: 14px;
  border: 1px solid rgba(77, 163, 255, 0.16);
  border-radius: 14px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  font-size: 14px;
  line-height: 1.6;
}

.reference.is-open .reference-panel {
  display: block;
}

.directory-box {
  margin-top: 19px;
  padding: 18px;
  border: 1px solid rgba(77, 163, 255, 0.24);
  border-radius: 20px;
  background: rgba(30, 136, 229, 0.06);
}

.directory-box a {
  display: inline-flex;
  margin-top: 12px;
  min-height: 42px;
  align-items: center;
  border-radius: 999px;
  padding: 10px 16px;
  color: var(--white);
  background: var(--blue);
  font-weight: 780;
}

.followup-form {
  margin-top: 20px;
}

.ai-disclaimer {
  width: min(1120px, 100%);
  margin: 29px auto 0;
  color: var(--dim);
  font-size: clamp(14px, 0.98vw, 18px);
  line-height: 1.64;
}

.footer {
  width: 100%;
  margin-top: 71px;
  padding: 64px 42px 51px;
  border: 1px solid var(--line-soft);
  border-radius: 36px;
  text-align: center;
  background: linear-gradient(180deg, rgba(18, 23, 27, 0.96), rgba(11, 15, 18, 0.98));
  box-shadow: var(--shadow), var(--glow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.footer-socials {
  margin-bottom: 47px;
}

.slogan {
  margin: 0;
  color: var(--white);
  text-transform: uppercase;
  font-size: clamp(45px, 3.88vw, 74px);
  line-height: 1.14;
  font-weight: 820;
  letter-spacing: 0;
}

.divider {
  width: min(1420px, 100%);
  height: 1px;
  margin: 52px auto;
  background: rgba(77, 163, 255, 0.18);
}

.footer-disclaimer {
  width: min(1280px, 100%);
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(16px, 1.22vw, 23px);
  line-height: 1.66;
}

.footer-disclaimer strong,
.copyright strong {
  color: var(--blue);
  font-weight: 820;
}

.footer-disclaimer strong {
  display: block;
  margin-bottom: 18px;
}

.footer-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px 22px;
}

.footer-menu a {
  color: var(--muted);
  font-size: clamp(16px, 1.15vw, 22px);
  font-weight: 530;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}

.footer-menu a:hover {
  color: var(--white);
  text-shadow: 0 0 15px rgba(30, 136, 229, 0.48);
}

.footer-menu span {
  width: 2px;
  height: 29px;
  border-radius: 999px;
  background: var(--blue);
  box-shadow: 0 0 10px rgba(30, 136, 229, 0.55);
}

.copyright {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(15px, 1.04vw, 20px);
  line-height: 1.55;
  font-weight: 760;
}

.side-rail {
  position: fixed;
  z-index: 30;
  left: 0;
  top: 338px;
  width: 90px;
  padding: 18px 13px;
  border: 1px solid rgba(77, 163, 255, 0.18);
  border-left: 0;
  border-radius: 0 28px 28px 0;
  display: grid;
  gap: 16px;
  background: rgba(14, 18, 21, 0.88);
  box-shadow: 0 0 31px rgba(30, 136, 229, 0.12), var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.side-rail a {
  position: relative;
  width: 58px;
  height: 58px;
  border: 1px solid rgba(30, 136, 229, 0.44);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  background: rgba(30, 136, 229, 0.035);
  box-shadow: 0 0 17px rgba(30, 136, 229, 0.18);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.side-rail a:hover {
  transform: scale(1.05);
  box-shadow: 0 0 28px rgba(30, 136, 229, 0.34);
}

.side-rail svg {
  width: 24px;
  height: 24px;
}

.side-rail span,
.float span {
  position: absolute;
  top: 50%;
  transform: translateY(-50%) translateX(7px);
  opacity: 0;
  pointer-events: none;
  padding: 8px 12px;
  border: 1px solid rgba(77, 163, 255, 0.2);
  border-radius: 999px;
  color: var(--white);
  background: rgba(8, 12, 15, 0.96);
  box-shadow: 0 0 18px rgba(30, 136, 229, 0.18);
  white-space: nowrap;
  font-size: 13px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.side-rail span {
  left: calc(100% + 12px);
}

.side-rail a:hover span,
.float:hover span {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.floating-actions {
  position: fixed;
  z-index: 40;
  right: 25px;
  bottom: 25px;
  display: grid;
  gap: 20px;
}

.float {
  position: relative;
  width: 72px;
  height: 72px;
  border: 1px solid rgba(77, 163, 255, 0.22);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  background: rgba(14, 18, 21, 0.88);
  box-shadow: 0 0 22px rgba(30, 136, 229, 0.18), var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: transform 0.25s ease, box-shadow 0.25s ease, color 0.25s ease;
}

.float:hover {
  transform: scale(1.05);
  box-shadow: 0 0 32px rgba(30, 136, 229, 0.34), var(--shadow);
}

.float svg {
  width: 29px;
  height: 29px;
  fill: currentColor;
}

.float-contact svg {
  fill: none;
}

.float-whatsapp {
  color: #25d366;
  border-color: rgba(37, 211, 102, 0.32);
  box-shadow: 0 0 22px rgba(37, 211, 102, 0.23), var(--shadow);
}

.float-contact {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.26);
}

.float-top {
  color: #a3adb5;
  border-color: rgba(163, 173, 181, 0.2);
  box-shadow: 0 0 16px rgba(163, 173, 181, 0.12), var(--shadow);
}

.float span {
  right: calc(100% + 13px);
  transform: translateY(-50%) translateX(7px);
}

.modal {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(3, 6, 8, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.modal-panel {
  width: min(900px, 100%);
  max-height: min(780px, 88vh);
  overflow: auto;
  padding: 32px;
  border: 1px solid rgba(77, 163, 255, 0.26);
  border-radius: 30px;
  color: var(--muted);
  background: rgba(18, 23, 27, 0.96);
  box-shadow: var(--shadow), var(--glow);
}

.modal-panel h3,
.modal-panel h4 {
  color: var(--white);
}

.modal-close {
  float: right;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 50%;
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
}

:focus-visible {
  outline: 2px solid rgba(77, 163, 255, 0.85);
  outline-offset: 4px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1500px) {
  .page {
    padding-top: 30px;
  }

  .site-header,
  main {
    width: min(1154px, calc(100% - 108px));
  }

  .site-header {
    min-height: 110px;
    border-radius: 28px;
    padding: 17px 23px 17px 26px;
  }

  .brand-logo {
    width: 70px;
    height: 70px;
    min-width: 70px;
    background-size: 56px 56px, auto;
  }

  .brand-logo img {
    width: 56px;
    height: 56px;
  }

  .social {
    width: 52px;
    height: 52px;
    min-width: 52px;
  }

  .social svg {
    width: 24px;
    height: 24px;
  }

  .header-button,
  .hero-button {
    min-height: 52px;
    border-radius: 18px;
    font-size: 14px;
  }

  .header-button {
    min-width: 168px;
    padding-inline: 21px;
  }

  .hero {
    padding-top: 66px;
    padding-bottom: 73px;
  }

  .kicker {
    margin-bottom: 20px;
    font-size: 14px;
  }

  .hero h1 {
    font-size: 49px;
    line-height: 1.08;
  }

  .hero-copy {
    width: min(760px, 100%);
    margin-top: 24px;
    font-size: 20px;
    line-height: 1.36;
  }

  .hero-actions {
    margin-top: 22px;
  }

  .hero-button {
    min-width: 190px;
  }

  .platform-card {
    min-height: 191px;
    border-radius: 24px;
    gap: 16px;
  }

  .platforms {
    gap: 19px;
  }

  .platform-card > span:last-child {
    font-size: 48px;
  }

  .floating-actions {
    right: 22px;
    bottom: 18px;
    gap: 12px;
  }

  .float {
    width: 50px;
    height: 50px;
  }

  .float svg {
    width: 24px;
    height: 24px;
  }

  .side-rail {
    top: 170px;
    width: 58px;
    padding: 8px 7px;
    gap: 10px;
  }

  .side-rail a {
    width: 44px;
    height: 44px;
  }

  .side-rail svg {
    width: 20px;
    height: 20px;
  }
}

@media (max-width: 1120px) {
  .site-header {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .header-actions {
    justify-content: center;
  }

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

  .side-rail {
    display: none;
  }
}

@media (max-width: 760px) {
  .page {
    padding-top: 18px;
    padding-bottom: 26px;
  }

  .site-header,
  main {
    width: calc(100% - 24px);
  }

  .site-header {
    padding: 16px;
    gap: 18px;
    border-radius: 26px;
  }

  .brand {
    gap: 12px;
  }

  .brand-logo {
    width: 58px;
    height: 58px;
    min-width: 58px;
    background-size: 47px 47px, auto;
  }

  .brand-logo img {
    width: 47px;
    height: 47px;
  }

  .brand-copy {
    gap: 4px;
    text-align: left;
  }

  .brand-copy strong {
    font-size: 24px;
  }

  .brand-copy span {
    font-size: 13px;
  }

  .header-actions {
    width: 100%;
    gap: 10px;
  }

  .socials,
  .footer-socials {
    width: 100%;
    flex-wrap: nowrap;
    gap: 11px;
  }

  .social {
    width: 44px;
    height: 44px;
    min-width: 44px;
  }

  .social svg {
    width: 21px;
    height: 21px;
  }

  .header-button {
    min-width: 0;
    flex: 1 1 150px;
    min-height: 48px;
    padding-inline: 14px;
    font-size: 13px;
  }

  .hero {
    padding: 72px 4px 64px;
  }

  .kicker {
    margin-bottom: 18px;
    font-size: 12px;
  }

  .hero h1 {
    font-size: clamp(31px, 9vw, 48px);
    line-height: 1.12;
  }

  .hero-copy {
    margin-top: 24px;
    font-size: 16px;
    line-height: 1.62;
  }

  .hero-actions {
    margin-top: 31px;
    gap: 13px;
  }

  .hero-button {
    min-width: 210px;
    min-height: 52px;
    font-size: 14px;
  }

  .platforms {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .platform-card {
    min-height: 190px;
    gap: 18px;
    border-radius: 25px;
  }

  .platform-card > span:last-child {
    font-size: 42px;
  }

  .ai-section {
    margin-top: 45px;
    border-radius: 28px;
  }

  .ai-panel {
    padding: 44px 13px 36px;
  }

  .ai-panel h2 {
    font-size: 37px;
  }

  .ai-copy {
    font-size: 16px;
  }

  .ai-thread {
    margin-top: 28px;
  }

  .question-form,
  .followup-form {
    min-height: 62px;
    padding: 8px 8px 8px 16px;
  }

  .question-form input,
  .followup-form input {
    font-size: 14px;
  }

  .question-form button,
  .followup-form button {
    width: 44px;
    height: 44px;
    min-width: 44px;
    font-size: 24px;
  }

  .chip-row {
    gap: 9px;
    margin-top: 18px;
  }

  .chip-row button {
    font-size: 12px;
    min-height: 39px;
    padding: 8px 11px;
  }

  .ai-response article {
    padding: 18px;
    border-radius: 22px;
  }

  .reference-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .ai-disclaimer {
    font-size: 12px;
  }

  .footer {
    margin-top: 45px;
    padding: 38px 15px 32px;
    border-radius: 28px;
  }

  .footer-socials {
    margin-bottom: 31px;
  }

  .slogan {
    font-size: clamp(28px, 8.5vw, 42px);
  }

  .divider {
    margin: 31px auto;
  }

  .footer-disclaimer,
  .footer-menu a,
  .copyright {
    font-size: 14px;
  }

  .footer-menu {
    gap: 12px 14px;
  }

  .footer-menu span {
    width: 2px;
    height: 20px;
  }

  .floating-actions {
    right: 13px;
    bottom: 13px;
    gap: 10px;
  }

  .float {
    width: 46px;
    height: 46px;
  }

  .float svg {
    width: 21px;
    height: 21px;
  }
}

@media (max-width: 390px) {
  .brand-copy strong {
    font-size: 22px;
  }

  .brand-copy span {
    font-size: 12px;
  }

  .header-button {
    flex-basis: 100%;
  }

  .slogan {
    font-size: 27px;
  }
}