:root {
  --ink: #172235;
  --muted: #5f6b7a;
  --line: #dbe0e7;
  --paper: #ffffff;
  --soft: #f5f7fa;
  --yellow: #ffdd1f;
  --yellow-soft: #fff7bf;
  --orange: #ff8a00;
  --blue: #2447d8;
  --green: #16835d;
  --max: 1120px;
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Yu Gothic", YuGothic, "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.75;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(23, 34, 53, 0.12);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.header-inner {
  width: min(calc(100% - 32px), var(--max));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  min-height: 42px;
  padding: 8px 12px;
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus-visible { border-color: var(--ink); }

.site-nav .nav-store {
  padding-inline: 16px;
  color: #fff;
  background: var(--ink);
  border: 0;
  border-radius: 6px;
}

.language-switch {
  margin: 0 6px;
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
}

.language-switch a,
.language-switch span {
  min-height: 32px;
  padding: 4px 8px;
  display: inline-flex;
  align-items: center;
  border: 0;
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.language-switch span {
  color: #fff;
  background: var(--ink);
}

.language-switch a:hover,
.language-switch a:focus-visible { background: var(--yellow-soft); }

.hero {
  position: relative;
  min-height: min(670px, calc(100svh - 100px));
  overflow: hidden;
  background: var(--yellow);
  isolation: isolate;
}

.hero-inner {
  width: min(calc(100% - 32px), var(--max));
  min-height: inherit;
  margin: 0 auto;
  padding: 36px 0 30px;
  position: relative;
  display: flex;
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 3;
  width: min(650px, 65%);
}

.eyebrow {
  margin: 0 0 16px;
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
}

.eyebrow span {
  display: inline-block;
  padding: 5px 10px;
  color: #fff;
  background: var(--ink);
  border-radius: 5px;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: 72px;
  line-height: 1.02;
  font-weight: 900;
}

.hero-lead {
  max-width: 620px;
  margin: 20px 0 0;
  font-size: 20px;
  line-height: 1.6;
  font-weight: 700;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
}

.button {
  min-height: 52px;
  padding: 12px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  font-weight: 800;
  line-height: 1.3;
  text-decoration: none;
  background: #fff;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 6px 0 rgba(23, 34, 53, 0.16);
}

.button-primary { color: #fff; background: var(--ink); }
.button-light { color: var(--ink); background: #fff; }

.price-note {
  margin: 12px 0 0;
  font-size: 13px;
  font-weight: 700;
}

.hero-screen {
  position: absolute;
  z-index: 1;
  width: min(48vw, 520px);
  right: -34px;
  bottom: -43%;
  transform: rotate(2deg);
  filter: drop-shadow(0 28px 28px rgba(23, 34, 53, 0.24));
}

.hero-icon {
  position: absolute;
  z-index: 0;
  width: 280px;
  right: 12%;
  top: 8%;
  opacity: 0.12;
  border-radius: 36px;
  transform: rotate(-7deg);
}

.band { padding: 88px 0; }
.band-soft { background: var(--soft); }
.band-dark { color: #fff; background: var(--ink); }
.band-yellow { background: var(--yellow); }

.shell {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.section-head {
  max-width: 760px;
  margin-bottom: 42px;
}

.section-kicker {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.band-dark .section-kicker { color: var(--yellow); }

.band-yellow .section-kicker {
  color: var(--ink);
  font-size: 14px;
}

.section-head h2,
.article-header h1,
.article-body h2,
.cta-band h2 {
  margin: 0;
  line-height: 1.25;
  font-weight: 900;
}

.section-head h2 { font-size: 48px; }
.section-head p { margin: 14px 0 0; color: var(--muted); font-size: 17px; }
.band-dark .section-head p { color: #cbd3df; }
.band-yellow .section-head p {
  color: #293345;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.8;
}

.steps,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-top: 2px solid var(--ink);
}

.friction-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.friction-item {
  min-width: 0;
  padding: 28px 30px 28px 0;
  border-bottom: 1px solid var(--line);
}

.band-yellow .friction-grid { border-bottom-color: rgba(23, 34, 53, 0.42); }
.band-yellow .friction-item { border-bottom-color: rgba(23, 34, 53, 0.42); }

.friction-item:nth-child(even) {
  padding-right: 0;
  padding-left: 30px;
  border-left: 1px solid var(--line);
}

.band-yellow .friction-item:nth-child(even) { border-left-color: rgba(23, 34, 53, 0.42); }

.friction-item:nth-last-child(-n + 2) { border-bottom: 0; }
.friction-item h3 { margin: 0 0 8px; font-size: 20px; line-height: 1.45; }
.friction-item p { margin: 0; color: var(--muted); }
.friction-answer { display: block; margin-top: 12px; color: var(--blue); font-size: 14px; font-weight: 800; }

.band-yellow .friction-item h3 {
  margin-bottom: 10px;
  font-size: 21px;
  font-weight: 900;
  line-height: 1.5;
}

.band-yellow .friction-item p {
  color: #293345;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.8;
}

.band-yellow .friction-answer {
  margin-top: 14px;
  color: #17379f;
  font-size: 15px;
  font-weight: 900;
  line-height: 1.55;
}

.step,
.feature {
  min-width: 0;
  padding: 28px 30px 0 0;
  border-right: 1px solid var(--line);
}

.step:last-child,
.feature:last-child { border-right: 0; padding-right: 0; padding-left: 30px; }
.step:nth-child(2),
.feature:nth-child(2) { padding-left: 30px; }

.step-number {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--yellow);
  border: 2px solid var(--ink);
  border-radius: 50%;
  font-weight: 900;
}

.step h3,
.feature h3 { margin: 18px 0 8px; font-size: 21px; line-height: 1.4; }
.step p,
.feature p { margin: 0; color: var(--muted); }

.proof-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
  gap: 72px;
  align-items: center;
}

.proof-media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.proof-media img { width: 100%; }

.proof-copy h2 {
  margin: 0;
  font-size: 48px;
  line-height: 1.2;
}

.proof-copy p { margin: 20px 0 0; font-size: 17px; }

.check-list {
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 12px 0 12px 34px;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 900;
}

.columns-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.column-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.column-card:hover,
.column-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--ink);
  box-shadow: 0 12px 24px rgba(23, 34, 53, 0.1);
}

.column-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.column-card .mock-thumb {
  aspect-ratio: 3 / 2;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--yellow-soft);
}

.column-copy { padding: 22px; }
.column-copy small { color: var(--blue); font-weight: 800; }
.column-copy h3 { margin: 7px 0 8px; font-size: 20px; line-height: 1.45; }
.column-copy p { margin: 0; color: var(--muted); font-size: 14px; }
.column-copy .read-more { display: inline-block; margin-top: 14px; font-weight: 800; }

.mask-demo {
  width: min(100%, 360px);
  display: grid;
  gap: 12px;
}

.mask-line {
  height: 22px;
  border-radius: 3px;
  background: var(--ink);
}

.mask-line:nth-child(2) { width: 78%; }
.mask-line:nth-child(3) { width: 92%; background: #fff; border: 1px solid var(--line); }

.cta-band { padding: 76px 0; background: var(--yellow); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta-band h2 { max-width: 720px; font-size: 58px; }
.cta-band p { margin: 12px 0 0; font-weight: 700; }
.cta-actions { margin: 0; flex: 0 0 auto; }

.site-footer { padding: 44px 0; color: #c7cfdb; background: #0d1624; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: start; }
.footer-brand { color: #fff; font-weight: 900; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-links a { color: #fff; font-size: 14px; }
.privacy-note { max-width: 760px; margin: 18px 0 0; font-size: 12px; }
.copyright { margin: 22px 0 0; font-size: 12px; }

.breadcrumbs {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  background: var(--soft);
}

.breadcrumbs ol {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; color: #99a3b0; }

.article-header {
  padding: 72px 0 54px;
  background: var(--yellow);
}

.article-header .shell { max-width: 920px; }
.article-label { margin: 0 0 10px; font-weight: 900; }
.article-header h1 { font-size: 64px; }
.article-description { max-width: 780px; margin: 22px 0 0; font-size: 19px; font-weight: 700; }
.article-meta { margin: 20px 0 0; font-size: 13px; font-weight: 700; }

.article-layout {
  width: min(calc(100% - 32px), 1080px);
  margin: 0 auto;
  padding: 64px 0 88px;
  display: grid;
  grid-template-columns: minmax(0, 720px) 260px;
  gap: 72px;
  align-items: start;
}

.article-body { min-width: 0; }
.article-body > p:first-child { margin-top: 0; font-size: 18px; }
.article-body h2 { margin: 56px 0 16px; font-size: 36px; scroll-margin-top: 90px; }
.article-body h3 { margin: 34px 0 10px; font-size: 21px; line-height: 1.5; }
.article-body p { margin: 0 0 20px; }
.article-body ul,
.article-body ol { margin: 0 0 24px; padding-left: 1.4em; }
.article-body li { margin-bottom: 9px; }
.article-body strong { font-weight: 900; }

.article-figure {
  margin: 34px 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.article-figure img { width: 100%; }
.article-figure figcaption { padding: 12px 16px; color: var(--muted); font-size: 12px; }

.notice {
  margin: 30px 0;
  padding: 20px 22px;
  border-left: 5px solid var(--orange);
  background: #fff5e7;
}

.notice strong { display: block; margin-bottom: 4px; }
.notice p:last-child { margin-bottom: 0; }

.quick-answer {
  margin: 0 0 36px;
  padding: 24px 26px;
  border: 2px solid var(--ink);
  background: var(--yellow-soft);
}

.quick-answer strong { display: block; margin-bottom: 8px; font-size: 18px; }
.quick-answer p { margin: 0; }

.article-cta {
  margin-top: 56px;
  padding: 30px;
  color: #fff;
  background: var(--ink);
  border-radius: 8px;
}

.article-cta h2 { margin: 0 0 10px; font-size: 27px; }
.article-cta p { margin: 0; color: #d4dbe5; }
.article-cta .button { margin-top: 20px; }

.article-aside {
  position: sticky;
  top: 92px;
  padding-left: 22px;
  border-left: 1px solid var(--line);
}

.article-aside h2 { margin: 0 0 12px; font-size: 14px; }
.article-aside ul { margin: 0; padding: 0; list-style: none; }
.article-aside li { padding: 9px 0; border-bottom: 1px solid var(--line); }
.article-aside a { color: var(--muted); font-size: 13px; font-weight: 700; text-decoration: none; }
.article-aside a:hover,
.article-aside a:focus-visible { color: var(--blue); }

.mock-screenshot {
  padding: 26px;
  color: #263348;
  background: #edf1f7;
}

.mock-window {
  width: min(100%, 520px);
  margin: 0 auto;
  padding: 20px;
  border: 1px solid #ccd4df;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 30px rgba(23, 34, 53, 0.12);
}

.mock-window .row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.mock-window .row b { color: var(--muted); }
.mock-window .redacted { height: 18px; align-self: center; border-radius: 2px; background: var(--ink); }

.faq { margin-top: 54px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { padding: 18px 36px 18px 0; cursor: pointer; font-weight: 800; }
.faq details p { padding: 0 0 18px; margin: 0; color: var(--muted); }

@media (max-width: 900px) {
  .hero-copy { width: 72%; }
  .hero h1 { font-size: 60px; }
  .section-head h2 { font-size: 40px; }
  .cta-band h2 { font-size: 44px; }
  .article-header h1 { font-size: 50px; }
  .article-body h2 { font-size: 31px; }
  .proof-copy h2 { font-size: 40px; }
  .hero-screen { width: 52vw; right: -90px; opacity: 0.78; }
  .proof-grid { gap: 42px; }
  .columns-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .article-aside { position: static; order: -1; padding: 16px 0; border-left: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .article-aside ul { display: flex; flex-wrap: wrap; gap: 6px 18px; }
  .article-aside li { border: 0; padding: 2px 0; }
}

@media (max-width: 720px) {
  .header-inner { min-height: 60px; }
  .brand span { display: none; }
  .brand img { width: 36px; height: 36px; }
  .site-nav { min-width: 0; gap: 0; }
  .site-nav a { padding-inline: 9px; font-size: 12px; }
  .site-nav .nav-store { padding-inline: 11px; }
  .site-nav .nav-secondary { display: none; }
  .language-switch { margin: 0 4px; }
  .language-switch a,
  .language-switch span { padding-inline: 7px; font-size: 10px; }
  .hero { min-height: calc(100svh - 96px); }
  .hero-inner { padding: 36px 0 32px; align-items: flex-start; }
  .hero-copy { width: 100%; }
  .hero h1 { max-width: 600px; font-size: 44px; }
  .section-head h2 { font-size: 32px; }
  .cta-band h2 { font-size: 34px; }
  .article-header h1 { font-size: 38px; }
  .article-body h2 { font-size: 28px; }
  .proof-copy h2 { font-size: 32px; }
  .hero-lead { width: 92%; margin-top: 20px; font-size: 17px; }
  .hero-actions { margin-top: 22px; }
  .hero-screen { width: min(62vw, 350px); right: -72px; bottom: -280px; opacity: 0.42; }
  .hero-icon { width: 190px; right: -30px; top: 22%; }
  .hero-actions { flex-wrap: nowrap; gap: 8px; }
  .hero-actions .button { min-width: 0; padding-inline: 14px; font-size: 14px; }
  html[lang="en"] .hero h1 { font-size: 42px; }
  html[lang="en"] .hero-lead { font-size: 16px; line-height: 1.5; }
  html[lang="en"] .price-note { font-size: 12px; line-height: 1.5; }
  .band { padding: 64px 0; }
  .steps,
  .feature-grid,
  .friction-grid { grid-template-columns: 1fr; }
  .step,
  .feature,
  .step:nth-child(2),
  .feature:nth-child(2),
  .step:last-child,
  .feature:last-child { padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .step:last-child,
  .feature:last-child { border-bottom: 0; }
  .friction-item,
  .friction-item:nth-child(even),
  .friction-item:nth-last-child(-n + 2) { padding: 22px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .friction-item:last-child { border-bottom: 0; }
  .proof-grid { grid-template-columns: 1fr; }
  .proof-copy { order: -1; }
  .columns-grid { grid-template-columns: 1fr; }
  .cta-inner { display: block; }
  .cta-actions { margin-top: 24px; }
  .footer-inner { grid-template-columns: 1fr; }
  .article-header { padding: 52px 0 40px; }
  .article-description { font-size: 17px; }
  .article-layout { padding-top: 44px; }
  .mock-screenshot { padding: 16px; }
  .mock-window { padding: 14px; }
  .mock-window .row { grid-template-columns: 74px 1fr; }
}

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