.seo-page {
  min-height: 100vh;
  background: var(--nus-paper);
  color: var(--nus-ink);
}

.seo-shell {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.seo-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1.5px solid var(--nus-line);
  background: rgba(255, 250, 239, .86);
  backdrop-filter: blur(10px);
}

.seo-header .seo-shell { width: min(1380px, calc(100% - 96px)); }
.seo-nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  row-gap: 10px;
  gap: 24px;
}

.seo-nav-brand { flex: 0 0 auto; }
.seo-nav img { display: block; height: 36px; width: auto; }
.seo-nav-links, .seo-nav-tools, .seo-nav-languages, .seo-nav-clock { display: flex; align-items: center; }
.seo-nav-links { justify-content: center; flex-wrap: wrap; gap: 22px; }
.seo-nav-tools { flex: 0 0 auto; gap: 22px; }
.seo-nav a { color: var(--nus-muted); font-size: 11px; font-weight: 700; letter-spacing: .16em; text-decoration: none; text-transform: uppercase; transition: color 180ms, background 180ms, transform 180ms; }
.seo-nav a:hover { color: var(--nus-coral); }
.seo-nav .seo-nav-current { padding: 5px 0 4px; border-bottom: 2px solid var(--nus-sun); color: var(--nus-sun); }
.seo-nav-clock { gap: 8px; color: var(--nus-muted); font-family: var(--font-accent); font-size: 11.5px; letter-spacing: .1em; }
.seo-nav-time { display: inline-block; width: 76px; color: var(--nus-ink); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1; letter-spacing: .08em; white-space: nowrap; }
.seo-nav-languages { gap: 6px; font-size: 12px; letter-spacing: .08em; }
.seo-nav-languages span { color: var(--nus-muted); }
.seo-nav-languages a { padding: 4px 2px; border-bottom: 1.5px solid transparent; font-size: 12px; letter-spacing: .08em; }
.seo-nav-languages a.is-active { border-color: var(--nus-sun); color: var(--nus-ink); }
.seo-nav .seo-nav-cta { padding: 11px 22px; border-radius: 999px; background: var(--nus-sun); color: var(--nus-paper); white-space: nowrap; }
.seo-nav .seo-nav-cta:hover { background: var(--nus-ink); color: var(--nus-paper); }

.seo-hero {
  padding: 104px 0 88px;
  border-bottom: 1px solid var(--nus-line);
}

.seo-kicker {
  margin: 0 0 18px;
  color: var(--nus-sun);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.seo-hero h1 {
  max-width: 15ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.04;
  letter-spacing: -.025em;
}

.seo-lead {
  max-width: 720px;
  margin: 30px 0 0;
  color: var(--nus-muted);
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 500;
  line-height: 1.65;
}

.seo-proofline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 34px;
  color: var(--nus-ink-70);
  font-size: 13px;
  font-weight: 600;
}

.seo-proofline span:not(:last-child)::after { content: "·"; margin-left: 18px; color: var(--nus-sun); }

.seo-section { padding: 80px 0; border-bottom: 1px solid var(--nus-line); }
.seo-section-grid { display: grid; grid-template-columns: minmax(220px, .7fr) minmax(0, 1.5fr); gap: 64px; }
.seo-section h2 { margin: 0; font-family: var(--font-display); font-size: clamp(28px, 4vw, 42px); line-height: 1.12; }
.seo-copy { max-width: 760px; }
.seo-copy > :first-child { margin-top: 0; }
.seo-copy p { color: var(--nus-muted); font-size: 17px; font-weight: 500; line-height: 1.75; }
.seo-copy strong { color: var(--nus-ink); }

.seo-steps, .seo-cards, .seo-faq { display: grid; gap: 16px; }
.seo-steps { counter-reset: steps; }
.seo-step, .seo-card, .seo-faq details {
  border: 1px solid var(--nus-line);
  border-radius: 16px;
  background: var(--nus-card);
}

.seo-step { position: relative; padding: 26px 28px 26px 70px; counter-increment: steps; }
.seo-step::before {
  content: counter(steps, decimal-leading-zero);
  position: absolute;
  left: 24px;
  top: 26px;
  color: var(--nus-sun);
  font-family: var(--font-display);
  font-weight: 700;
}

.seo-step h3, .seo-card h3 { margin: 0 0 8px; font-family: var(--font-display); font-size: 20px; }
.seo-step p, .seo-card p { margin: 0; color: var(--nus-muted); font-size: 15px; font-weight: 500; line-height: 1.65; }
.seo-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.seo-card { padding: 26px; }
.seo-card a { display: inline-block; margin-top: 16px; color: var(--nus-ink); font-size: 13px; font-weight: 700; text-underline-offset: 4px; }

.seo-list { margin: 24px 0 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.seo-list li { position: relative; padding-left: 24px; color: var(--nus-muted); font-size: 16px; font-weight: 500; line-height: 1.65; }
.seo-list li::before { content: "→"; position: absolute; left: 0; color: var(--nus-sun); font-weight: 700; }

.seo-note { margin-top: 28px; padding: 22px 24px; border-left: 3px solid var(--nus-sun); background: rgba(255, 117, 31, .06); }
.seo-note p { margin: 0; color: var(--nus-ink-70); font-size: 15px; }

.seo-faq details { padding: 0 24px; }
.seo-faq summary { cursor: pointer; padding: 22px 0; font-family: var(--font-display); font-size: 18px; font-weight: 700; }
.seo-faq details p { margin: -4px 0 22px; color: var(--nus-muted); font-size: 15px; line-height: 1.7; }

.seo-spectrum { padding: 80px 0; border-bottom: 1px solid var(--nus-line); background: rgba(125, 199, 255, .05); }
.seo-spectrum-head { max-width: 720px; margin-bottom: 34px; }
.seo-spectrum h2 { margin: 0; font-family: var(--font-display); font-size: clamp(32px, 5vw, 48px); }
.seo-spectrum-head > p:last-child { margin: 16px 0 0; color: var(--nus-muted); font-size: 17px; line-height: 1.7; }
.seo-spectrum-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.seo-spectrum-card { display: block; padding: 26px; border: 1px solid var(--nus-line); border-radius: 16px; background: var(--nus-card); color: var(--nus-ink); text-decoration: none; transition: transform 180ms ease, box-shadow 180ms ease; }
.seo-spectrum-card:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(34, 34, 34, .07); }
.seo-spectrum-card span { color: var(--nus-sun); font-family: var(--font-display); font-size: 21px; font-weight: 700; }
.seo-spectrum-card strong { display: block; margin-top: 8px; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
.seo-spectrum-card p { margin: 14px 0 0; color: var(--nus-muted); font-size: 15px; line-height: 1.65; }

.seo-cta { padding: 88px 0; }
.seo-contact-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 72px; align-items: start; }
.seo-contact-intro h2 { max-width: 16ch; margin: 0; font-family: var(--font-display); font-size: clamp(32px, 5vw, 54px); }
.seo-contact-intro > p { max-width: 540px; margin: 20px 0 0; color: var(--nus-muted); font-size: 17px; line-height: 1.7; }
.seo-contact-emphasis { color: var(--nus-ink); font-weight: 800; }
.seo-contact-mail { display: inline-block; margin-top: 28px; color: var(--nus-ink); font-size: 17px; font-weight: 700; text-underline-offset: 5px; }

.seo-quick-contact { align-self: center; width: 100%; max-width: 540px; }
.seo-email-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 8px; padding: 6px 6px 6px 24px; border: 1.5px solid var(--nus-line); border-radius: 999px; background: var(--nus-card); transition: border-color 180ms, box-shadow 180ms; }
.seo-email-form:focus-within { border-color: var(--nus-sky); box-shadow: 0 0 0 3px rgba(14, 177, 210, .14); }
.seo-email-input { min-width: 0; width: 100%; padding: 10px 0; border: 0; outline: 0; background: transparent; color: var(--nus-ink); font: 500 16px/1.4 var(--font-body); }
.seo-email-input::placeholder { color: rgba(34, 34, 34, .38); }
.seo-email-submit { display: inline-flex; align-items: center; gap: 9px; padding: 13px 24px; border: 0; border-radius: 999px; background: var(--nus-sun); color: var(--nus-paper); cursor: pointer; font: 700 12px/1 var(--font-body); letter-spacing: .18em; text-transform: uppercase; transition: background 180ms, transform 180ms; }
.seo-email-submit:hover { background: var(--nus-ink); transform: translateY(-1px); }
.seo-email-submit:disabled { cursor: wait; opacity: .65; }
.seo-visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.seo-form-note { margin: 14px 8px 0; color: var(--nus-muted); font-size: 12px; line-height: 1.55; }
.seo-form-status { min-height: 20px; margin: 10px 8px 0; font-size: 14px; font-weight: 700; }
.seo-form-status.is-success { color: #26734d; }
.seo-form-status.is-error { color: #b33a3a; }
.seo-footer { padding: 28px 0; background: var(--nus-ink); color: rgba(255, 250, 239, .72); }
.seo-footer-row { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; font-size: 13px; }
.seo-footer a { color: inherit; }

@media (max-width: 1320px) {
  .seo-nav { padding: 14px 0; }
  .seo-nav-links { order: 3; width: 100%; justify-content: center; }
}

@media (max-width: 760px) {
  .seo-shell { width: min(100% - 32px, 1120px); }
  .seo-header .seo-shell { width: min(100% - 40px, 1380px); }
  .seo-nav { min-height: 64px; }
  .seo-nav-links { justify-content: flex-start; flex-wrap: nowrap; gap: 18px; overflow-x: auto; padding: 3px 0 2px; scrollbar-width: none; }
  .seo-nav-links::-webkit-scrollbar { display: none; }
  .seo-nav-links .seo-nav-current { order: -1; }
  .seo-nav-tools { gap: 14px; }
  .seo-nav-clock { display: none; }
  .seo-nav a { font-size: 10px; }
  .seo-nav .seo-nav-cta { padding: 10px 14px; }
  .seo-hero { padding: 72px 0 64px; }
  .seo-section { padding: 60px 0; }
  .seo-section-grid { grid-template-columns: 1fr; gap: 28px; }
  .seo-cards { grid-template-columns: 1fr; }
  .seo-spectrum-grid, .seo-contact-grid { grid-template-columns: 1fr; }
  .seo-contact-grid { gap: 38px; }
  .seo-quick-contact { max-width: none; }
  .seo-proofline { display: grid; gap: 8px; }
  .seo-proofline span:not(:last-child)::after { content: none; }
}

@media (max-width: 430px) {
  .seo-email-form { padding-left: 18px; }
  .seo-email-submit { padding: 13px 17px; }
}