:root {
  color-scheme: light;
  --ink: #14213d;
  --muted: #5f6c80;
  --line: #dce4ef;
  --surface: #ffffff;
  --surface-soft: #f5f8fc;
  --primary: #11998e;
  --primary-dark: #08776f;
  --accent: #ffb703;
  --danger: #b42318;
  --success: #027a48;
  --shadow: 0 24px 60px rgba(20, 33, 61, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--surface-soft);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 22px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.05rem;
}

.brand img,
.not-found img {
  border-radius: 12px;
  box-shadow: 0 8px 22px rgba(17, 153, 142, 0.24);
}

nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 650;
}

nav a:hover {
  color: var(--ink);
}

.nav-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 14px;
  background: var(--surface);
  color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.7fr);
  gap: 56px;
  align-items: center;
  max-width: 1160px;
  min-height: 620px;
  margin: 0 auto;
  padding: 52px 24px 84px;
}

.hero-copy h1,
.legal-content h1,
.contact-intro h1,
.not-found h1 {
  margin: 0;
  font-size: clamp(2.7rem, 7vw, 5.8rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.lead {
  max-width: 660px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.24rem;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border: 0;
  border-radius: 8px;
  padding: 12px 18px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.button.primary {
  background: var(--primary);
  color: #ffffff;
}

.button.primary:hover {
  background: var(--primary-dark);
}

.button.secondary {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
}

.phone-preview {
  position: relative;
  width: min(100%, 360px);
  aspect-ratio: 9 / 16;
  margin: 0 auto;
  border: 12px solid #101828;
  border-radius: 34px;
  background:
    radial-gradient(circle at 70% 20%, rgba(255, 183, 3, 0.36), transparent 28%),
    linear-gradient(145deg, #e7fff8, #ffffff 48%, #ecf4ff);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.phone-top {
  width: 96px;
  height: 22px;
  margin: 12px auto 0;
  border-radius: 0 0 14px 14px;
  background: #101828;
}

.scan-frame {
  position: absolute;
  inset: 22% 17% auto;
  height: 210px;
}

.scan-frame span {
  position: absolute;
  width: 54px;
  height: 54px;
  border-color: var(--primary);
  border-style: solid;
}

.scan-frame span:nth-child(1) {
  top: 0;
  left: 0;
  border-width: 5px 0 0 5px;
}

.scan-frame span:nth-child(2) {
  top: 0;
  right: 0;
  border-width: 5px 5px 0 0;
}

.scan-frame span:nth-child(3) {
  bottom: 0;
  left: 0;
  border-width: 0 0 5px 5px;
}

.scan-frame span:nth-child(4) {
  right: 0;
  bottom: 0;
  border-width: 0 5px 5px 0;
}

.scan-line {
  position: absolute;
  top: 44%;
  left: 17%;
  width: 66%;
  height: 3px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 22px rgba(255, 183, 3, 0.72);
}

.preview-panel {
  position: absolute;
  right: 18px;
  bottom: 22px;
  left: 18px;
  display: grid;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
}

.preview-panel small {
  color: var(--muted);
}

.feature-band,
.support-band,
.legal-page,
.contact-page {
  max-width: 1160px;
  margin: 0 auto;
  padding: 56px 24px;
}

.section-heading {
  max-width: 680px;
}

.section-heading h2,
.support-band h2,
.contact-note h2,
.legal-content h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.feature-card,
.contact-form,
.contact-note,
.legal-content {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 12px 32px rgba(20, 33, 61, 0.06);
}

.feature-card {
  padding: 22px;
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: #e3fbf7;
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 900;
}

.feature-card h3 {
  margin: 18px 0 8px;
  font-size: 1.05rem;
}

.feature-card p,
.support-band p,
.contact-intro p,
.contact-note p,
.legal-content p {
  color: var(--muted);
}

.support-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}

.support-band p {
  max-width: 650px;
}

.legal-content {
  max-width: 820px;
  margin: 0 auto;
  padding: 42px;
}

.legal-content h1,
.contact-intro h1 {
  font-size: clamp(2.4rem, 5vw, 4.3rem);
}

.legal-content h2 {
  margin-top: 34px;
  font-size: 1.35rem;
}

.legal-content a {
  color: var(--primary-dark);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.contact-intro {
  max-width: 680px;
  margin-bottom: 28px;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 24px;
}

.contact-form {
  display: grid;
  gap: 18px;
  padding: 28px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: var(--ink);
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  background: #fbfdff;
  color: var(--ink);
  font: inherit;
  font-weight: 500;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 3px solid rgba(17, 153, 142, 0.18);
  border-color: var(--primary);
}

.user-id-field {
  display: none;
}

.user-id-field.is-visible {
  display: grid;
}

.contact-note {
  align-self: start;
  padding: 24px;
}

.form-status {
  min-height: 24px;
  margin: 0;
  font-weight: 750;
}

.form-status[data-type="success"] {
  color: var(--success);
}

.form-status[data-type="error"] {
  color: var(--danger);
}

.form-status[data-type="pending"] {
  color: var(--muted);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 32px 24px 46px;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.site-footer a {
  font-weight: 750;
}

.not-found {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px;
  text-align: center;
}

@media (max-width: 900px) {
  .hero,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 32px;
  }

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

  .support-band,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    width: 100%;
    flex-wrap: wrap;
  }

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

  .legal-content,
  .contact-form {
    padding: 24px;
  }

  .phone-preview {
    width: min(100%, 310px);
  }
}