:root {
  --bg: #f4f0e8;
  --bg-strong: #e9e1d4;
  --surface: rgba(255, 255, 255, 0.58);
  --surface-strong: rgba(255, 255, 255, 0.8);
  --line: rgba(28, 35, 43, 0.12);
  --text: #171b22;
  --muted: #5d6774;
  --accent: #3562d9;
  --accent-deep: #244ebf;
  --accent-soft: rgba(53, 98, 217, 0.12);
  --max-width: 1180px;
  --radius: 28px;
  --shadow: 0 24px 80px rgba(23, 27, 34, 0.08);
  --font-display: "Syne", "Plus Jakarta Sans", sans-serif;
  --font-body: "Plus Jakarta Sans", "Hiragino Sans", sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.92), transparent 36%),
    radial-gradient(circle at 84% 18%, rgba(83, 118, 205, 0.14), transparent 24%),
    linear-gradient(180deg, #f7f4ee 0%, #efe7dc 100%);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

.site-shell {
  padding: 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  justify-content: center;
  padding: 12px 0 18px;
  background: linear-gradient(180deg, rgba(247, 244, 238, 0.88), rgba(247, 244, 238, 0));
  backdrop-filter: blur(12px);
}

.site-header__inner,
.section,
.doc-shell {
  width: min(100%, var(--max-width));
  margin: 0 auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.wordmark {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
}

.wordmark__name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.wordmark__meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.topnav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.topnav a,
.lang-switch button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.56);
  color: var(--text);
  text-decoration: none;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.topnav a:hover,
.lang-switch button:hover,
.lang-switch button.is-active {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(23, 27, 34, 0.24);
  transform: translateY(-1px);
}

.lang-switch {
  display: inline-flex;
  gap: 8px;
}

.lang-switch button {
  font-family: var(--font-body);
  cursor: pointer;
}

.hero {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  min-height: calc(100svh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  align-items: end;
  gap: 28px;
  padding: 24px 0 80px;
}

.hero__copy {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 40px 0;
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(23, 27, 34, 0.08);
  font-family: var(--font-mono);
  font-size: 0.77rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero h1,
.doc-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 8.6rem);
  line-height: 0.92;
  letter-spacing: -0.05em;
}

.hero p {
  margin: 0;
  max-width: 48rem;
  font-size: clamp(1.06rem, 2vw, 1.34rem);
  color: var(--muted);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  background: var(--accent);
  color: white;
}

.btn--primary:hover {
  background: var(--accent-deep);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.62);
  border-color: var(--line);
}

.hero__visual {
  align-self: stretch;
  display: flex;
  align-items: stretch;
}

.poster {
  width: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 24px;
  padding: 28px;
  border-radius: 40px;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.44)),
    linear-gradient(145deg, rgba(53, 98, 217, 0.12), rgba(53, 98, 217, 0.02));
  border: 1px solid rgba(23, 27, 34, 0.08);
  box-shadow: var(--shadow);
}

.poster__meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.poster__stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-self: center;
}

.poster__line {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(23, 27, 34, 0.08);
  color: var(--muted);
  font-size: 0.96rem;
}

.poster__line strong {
  color: var(--text);
  font-weight: 600;
}

.poster__glyph {
  align-self: end;
  justify-self: end;
  font-family: var(--font-display);
  font-size: clamp(5rem, 10vw, 9rem);
  line-height: 0.85;
  letter-spacing: -0.05em;
  color: rgba(53, 98, 217, 0.18);
}

.section {
  display: grid;
  gap: 28px;
  padding: 46px 0;
}

.section--split {
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  align-items: start;
}

.section__intro {
  display: grid;
  gap: 12px;
}

.section__kicker {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

.section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.6vw, 3rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.section__lead {
  margin: 0;
  max-width: 34rem;
  color: var(--muted);
}

.feature-rail,
.support-layout,
.privacy-layout {
  display: grid;
  gap: 16px;
}

.feature {
  padding: 22px 0;
  border-top: 1px solid rgba(23, 27, 34, 0.09);
}

.feature:last-child {
  border-bottom: 1px solid rgba(23, 27, 34, 0.09);
}

.feature h3,
.faq-item h3,
.privacy-block h3 {
  margin: 0 0 8px;
  font-size: 1.06rem;
  letter-spacing: -0.02em;
}

.feature p,
.faq-item p,
.privacy-block p,
.doc-copy p,
.support-list li,
.privacy-list li {
  margin: 0;
  color: var(--muted);
}

.workflow-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 24px;
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(23, 27, 34, 0.08);
  box-shadow: 0 18px 48px rgba(23, 27, 34, 0.05);
}

.workflow-step {
  display: grid;
  gap: 14px;
}

.workflow-step__index {
  font-family: var(--font-mono);
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.77rem;
}

.workflow-step__label {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.detail-note {
  min-height: 220px;
  padding: 26px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.54);
  border: 1px solid rgba(23, 27, 34, 0.08);
}

.detail-note strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
}

.cta-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 30px;
  border-radius: 34px;
  background: linear-gradient(135deg, rgba(53, 98, 217, 0.14), rgba(255, 255, 255, 0.64));
  border: 1px solid rgba(23, 27, 34, 0.08);
}

.cta-strip__copy {
  display: grid;
  gap: 6px;
}

.cta-strip__copy strong {
  font-size: 1.18rem;
  letter-spacing: -0.03em;
}

.footer {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: 28px 0 56px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer__links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.doc-shell {
  padding: 24px 0 72px;
}

.doc-hero {
  display: grid;
  gap: 16px;
  padding: 34px 0 30px;
}

.doc-hero p {
  margin: 0;
  max-width: 50rem;
  color: var(--muted);
}

.doc-block {
  padding: 28px 0;
  border-top: 1px solid rgba(23, 27, 34, 0.08);
}

.doc-copy {
  display: grid;
  gap: 18px;
}

.meta-list,
.support-list,
.privacy-list {
  margin: 0;
  padding-left: 1.15rem;
}

.faq-item,
.privacy-block {
  display: grid;
  gap: 8px;
}

.pending {
  display: inline-flex;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(23, 27, 34, 0.09);
  color: var(--muted);
  font-size: 0.92rem;
}

[data-panel] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.js-ready [data-panel].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero,
  .section--split,
  .workflow-band,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-bottom: 44px;
  }
}

@media (max-width: 700px) {
  .site-shell {
    padding: 16px;
  }

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

  .topnav {
    justify-content: flex-start;
  }

  .poster,
  .cta-strip,
  .detail-note,
  .workflow-band {
    border-radius: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}