:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --surface-strong: #f1f5f9;
  --ink: #0f172a;
  --muted: #4b5b6f;
  --soft: #64748b;
  --line: #d8e0ea;
  --line-strong: #b9c5d4;
  --accent: #0f766e;
  --accent-strong: #0d9488;
  --accent-soft: #d8f5ee;
  --blue: #2563eb;
  --blue-soft: #dceafe;
  --warn: #b45309;
  --shadow: 0 22px 60px rgba(15, 23, 42, 0.12);
  --radius: 8px;
  --max: 1180px;
  --header: 72px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, #ffffff 0, #f7f9fc 36rem),
    var(--bg);
  line-height: 1.55;
  letter-spacing: 0;
}

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

img {
  display: block;
  max-width: 100%;
}

code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

pre {
  margin: 0;
  overflow-x: auto;
  border: 1px solid #233247;
  border-radius: var(--radius);
  background: #101827;
  color: #e5edf7;
  padding: 18px;
  font-size: 0.88rem;
  line-height: 1.58;
}

button,
select {
  font: inherit;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  transform: translateY(-160%);
  border-radius: 6px;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(216, 224, 234, 0.82);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(var(--max), calc(100vw - 40px));
  min-height: var(--header);
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-weight: 760;
  font-size: 1.02rem;
}

.brand img {
  width: 32px;
  height: 32px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  flex: 1 1 auto;
}

.site-nav a {
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  padding: 8px 10px;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a[aria-current="page"] {
  background: var(--surface-strong);
  color: var(--ink);
  outline: none;
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: max-content;
}

.language-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  padding: 3px;
}

.language-switch button {
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--soft);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 720;
  min-width: 42px;
  padding: 5px 9px;
}

.language-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: #fff;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font-weight: 720;
  padding: 9px 13px;
  transition: border-color 0.16s ease, background 0.16s ease, transform 0.16s ease;
}

.button:hover,
.button:focus-visible {
  border-color: var(--line-strong);
  background: var(--surface-strong);
  outline: none;
}

.button.primary {
  border-color: #0f766e;
  background: #0f766e;
  color: #fff;
}

.button.primary:hover,
.button.primary:focus-visible {
  background: #115e59;
}

.button.small {
  min-height: 34px;
  padding: 7px 11px;
  font-size: 0.88rem;
}

.hero {
  width: min(var(--max), calc(100vw - 40px));
  margin: 0 auto;
  padding: 52px 0 34px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(520px, 1.12fr);
  align-items: center;
  gap: 40px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  border: 1px solid #b6e7dc;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #0f5d56;
  font-size: 0.82rem;
  font-weight: 760;
  padding: 6px 10px;
}

.eyebrow.neutral {
  border-color: var(--line);
  background: var(--surface-strong);
  color: var(--muted);
}

.hero h1,
.page-hero h1 {
  max-width: 780px;
  margin: 18px 0 18px;
  color: #08111f;
  font-size: clamp(2.55rem, 5vw, 5.4rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.page-hero h1 {
  font-size: clamp(2.25rem, 4vw, 4.2rem);
}

.hero-copy,
.page-copy,
.section-copy {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 720px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.metric {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  padding: 13px;
}

.metric strong {
  display: block;
  font-size: 1.02rem;
}

.metric span {
  color: var(--soft);
  font-size: 0.86rem;
}

.hero-visual {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: #eaf0f7;
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  border-bottom: 1px solid #c9d4e3;
  background: #f6f8fb;
  padding: 0 12px;
}

.window-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #c6d0dd;
}

.window-dot:nth-child(1) {
  background: #ef6b64;
}

.window-dot:nth-child(2) {
  background: #f4b84a;
}

.window-dot:nth-child(3) {
  background: #3fbf72;
}

.hero-visual img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: center top;
}

.notice-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

.notice-inner {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, minmax(0, 1fr));
  gap: 18px;
  width: min(var(--max), calc(100vw - 40px));
  margin: 0 auto;
  padding: 18px 0;
}

.notice-item {
  color: var(--muted);
  font-size: 0.94rem;
}

.notice-item strong {
  display: block;
  color: var(--ink);
  margin-bottom: 2px;
}

.section {
  width: min(var(--max), calc(100vw - 40px));
  margin: 0 auto;
  padding: 58px 0;
}

.section.tight {
  padding: 34px 0;
}

.section-header {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(280px, 0.58fr);
  gap: 36px;
  align-items: end;
  margin-bottom: 24px;
}

.section h2 {
  margin: 0;
  color: #0b1220;
  font-size: clamp(2rem, 3.4vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.section h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.25;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 16px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.panel,
.feature,
.step,
.security-row,
.doc-link,
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.panel {
  padding: 20px;
}

.feature,
.step,
.security-row,
.doc-link {
  padding: 18px;
}

.feature p,
.step p,
.security-row p,
.doc-link p,
.panel p {
  margin: 0;
  color: var(--muted);
}

.feature-kicker {
  display: inline-flex;
  margin-bottom: 12px;
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  padding: 4px 8px;
}

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

.comparison .panel:first-child {
  background: #fbfcfe;
}

.comparison ul,
.check-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.comparison li,
.check-list li {
  position: relative;
  margin: 10px 0;
  padding-left: 22px;
  color: var(--muted);
}

.comparison li::before,
.check-list li::before {
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-strong);
  content: "";
}

.diagram {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 12px;
}

.diagram-node {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 18px;
}

.diagram-node strong {
  display: block;
  margin-bottom: 8px;
}

.diagram-node span {
  color: var(--muted);
}

.diagram-node:not(:last-child)::after {
  position: absolute;
  right: -15px;
  top: 50%;
  width: 18px;
  height: 1px;
  background: var(--line-strong);
  content: "";
}

.screenshot-tabs {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.tab-list {
  display: grid;
  gap: 8px;
}

.tab-list button {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  cursor: pointer;
  padding: 12px;
  text-align: left;
}

.tab-list button span {
  color: var(--muted);
  font-size: 0.84rem;
}

.tab-list button[aria-selected="true"] {
  border-color: #7dd3c7;
  background: #eefdf9;
}

.screen-panel {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: #e8eef7;
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.12);
}

.screen-panel img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: top center;
}

.page-hero {
  width: min(var(--max), calc(100vw - 40px));
  margin: 0 auto;
  padding: 52px 0 30px;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(360px, 0.62fr);
  gap: 38px;
  align-items: end;
}

.summary-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.summary-list li {
  border-left: 3px solid var(--accent-strong);
  background: #fff;
  padding: 10px 13px;
  color: var(--muted);
}

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

.timeline-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.timeline-label {
  color: var(--accent);
  font-weight: 820;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: #0f766e;
  color: #fff;
  font-weight: 820;
}

.code-panel {
  display: grid;
  gap: 12px;
}

.copy-row {
  display: flex;
  justify-content: flex-end;
}

.risk-table {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.risk-row {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) minmax(0, 0.8fr);
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding: 16px;
}

.risk-row:last-child {
  border-bottom: 0;
}

.risk-row strong {
  color: var(--ink);
}

.risk-row span,
.risk-row p {
  margin: 0;
  color: var(--muted);
}

.cta-band {
  width: min(var(--max), calc(100vw - 40px));
  margin: 28px auto 64px;
  border: 1px solid #9ce0d4;
  border-radius: 12px;
  background: #ecfdf8;
  padding: 28px;
}

.cta-band h2 {
  margin: 0 0 10px;
  font-size: clamp(1.75rem, 3vw, 3rem);
  line-height: 1.08;
}

.cta-band p {
  max-width: 760px;
  margin: 0 0 18px;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 24px;
  width: min(var(--max), calc(100vw - 40px));
  margin: 0 auto;
  padding: 34px 0;
}

.footer-inner p {
  margin: 8px 0 0;
  color: var(--muted);
}

.footer-links {
  display: grid;
  gap: 8px;
}

.footer-links a {
  color: var(--muted);
}

.footer-links a:hover,
.doc-link:hover {
  color: var(--ink);
}

.fine-print {
  width: min(var(--max), calc(100vw - 40px));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  padding: 18px 0 26px;
  color: var(--soft);
  font-size: 0.86rem;
}

.faq-item {
  padding: 0;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 760;
  padding: 16px 18px;
}

.faq-item p {
  margin: 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 0 18px 16px;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 700;
  padding: 6px 10px;
}

.muted {
  color: var(--muted);
}

@media (max-width: 1020px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 10px 0;
  }

  .site-nav {
    order: 3;
    justify-content: flex-start;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero-grid,
  .page-hero-grid,
  .section-header,
  .screenshot-tabs,
  .notice-inner {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 34px;
  }

  .hero-visual {
    max-width: 840px;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .diagram-node:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 720px) {
  .header-inner,
  .hero,
  .section,
  .page-hero,
  .notice-inner,
  .cta-band,
  .footer-inner,
  .fine-print {
    width: min(100vw - 28px, var(--max));
  }

  .hero h1,
  .page-hero h1 {
    font-size: 2.55rem;
  }

  .hero-points,
  .grid-2,
  .grid-3,
  .grid-4,
  .comparison,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .risk-row,
  .timeline-row {
    grid-template-columns: 1fr;
  }

  .header-actions .button {
    display: none;
  }

  .section {
    padding: 42px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}