@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Manrope";
  src: url("../fonts/manrope-latin-800-normal.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #fffdfb;
  --surface: #ffffff;
  --surface-soft: #f8f9fd;
  --line: #ece7e2;
  --line-strong: #d8dde8;
  --text: #2d2a28;
  --text-heading: #1f2430;
  --muted: #8e8a87;
  --muted-strong: #686461;
  --brand: #7aa0ff;
  --brand-strong: #4b76eb;
  --brand-soft: #eef3ff;
  --footer: #f4f1ec;
  --footer-heading: #1f2430;
  --footer-muted: #6f6b68;
  --footer-faint: #948f8b;
  --footer-line: #e6e1db;
  --header-bg: rgba(255, 253, 251, 0.9);
  --nav-link: #44423f;
  --shadow-card: 0 14px 48px rgba(43, 53, 84, 0.08);
  --radius-lg: 24px;
  --content: 1320px;
  --nav-h: 104px;
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-soft: #1c2028;
  --line: #2a2f3a;
  --line-strong: #3d4454;
  --text: #e8eaef;
  --text-heading: #f1f3f7;
  --muted: #8b95a5;
  --muted-strong: #aeb6c3;
  --brand: #9bb4ff;
  --brand-strong: #b8c8ff;
  --brand-soft: #252a38;
  --footer: #0c0e12;
  --footer-heading: #f1f3f7;
  --footer-muted: #8a91a0;
  --footer-faint: #6d7584;
  --footer-line: #2a2f3a;
  --header-bg: rgba(15, 17, 21, 0.88);
  --nav-link: #c9d0db;
  --shadow-card: 0 14px 48px rgba(0, 0, 0, 0.4);
  color-scheme: dark;
}

.site-lang-en body,
.site-lang-fr body {
  font-family: Manrope, "Segoe UI", system-ui, sans-serif;
}

.site-lang-ja body {
  font-family:
    Manrope,
    "Hiragino Sans",
    "Hiragino Kaku Gothic ProN",
    "Noto Sans JP",
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Manrope, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  text-rendering: optimizeLegibility;
}

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

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

button {
  font: inherit;
}

.page-shell {
  position: relative;
  overflow-x: clip;
}

.container {
  width: min(calc(100% - 48px), var(--content));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(16px);
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: var(--line);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--nav-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: none;
}

.brand-copy {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-heading);
}

.nav-links {
  display: inline-flex;
  align-items: center;
  gap: 34px;
  flex-wrap: wrap;
}

.nav-link {
  position: relative;
  padding: 8px 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--nav-link);
  letter-spacing: 0.04em;
}

.nav-link.current {
  color: var(--brand);
}

.nav-link.current::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -10px;
  margin: auto;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.header-tools {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.lang-switch {
  position: relative;
}

.lang-switch summary {
  list-style: none;
  cursor: pointer;
}

.lang-switch summary::-webkit-details-marker {
  display: none;
}

.lang-switch-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  min-width: 168px;
  padding: 8px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow-card);
  z-index: 120;
}

.lang-switch-panel a {
  display: block;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.lang-switch-panel a:hover,
.lang-switch-panel a:focus-visible {
  background: var(--brand-soft);
  color: var(--brand-strong);
}

.lang-switch-panel a.current {
  color: var(--brand-strong);
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--text-heading);
  cursor: pointer;
}

.theme-toggle-btn:hover {
  border-color: var(--line-strong);
}

.theme-toggle-btn .icon-dark {
  display: none;
}

[data-theme="dark"] .theme-toggle-btn .icon-light {
  display: none;
}

[data-theme="dark"] .theme-toggle-btn .icon-dark {
  display: block;
}

.locale-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted-strong);
  font-size: 12px;
  font-weight: 700;
}

.locale-pill svg {
  width: 10px;
  height: 10px;
  flex-shrink: 0;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 14px;
  background: var(--surface);
  box-shadow: 0 8px 24px rgba(49, 50, 56, 0.08);
  color: var(--text);
  cursor: pointer;
}

.mobile-menu {
  display: none;
  padding: 0 0 24px;
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 14px 18px;
  border-radius: 16px;
  font-size: 15px;
  font-weight: 700;
}

.mobile-menu a.current {
  background: var(--brand-soft);
  color: var(--brand-strong);
}

.hero {
  padding: 92px 0 60px;
}

.home-hero {
  text-align: center;
  padding: 72px 0 36px;
}

.home-kicker {
  margin: 0 0 16px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.home-lead {
  max-width: 36em;
  margin: 16px auto 0;
  color: var(--muted-strong);
  font-size: 18px;
  line-height: 1.7;
}

.home-hero .hero-actions {
  margin-top: 28px;
}

.about-hero {
  padding-bottom: 12px;
}

.hero-title {
  margin: 0;
  color: var(--text-heading);
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.btn-outline {
  border-color: rgba(122, 160, 255, 0.4);
  color: var(--brand);
  background: rgba(255, 255, 255, 0.72);
}

[data-theme="dark"] .btn-outline {
  background: rgba(23, 26, 33, 0.72);
}

.btn-primary {
  background: linear-gradient(135deg, #7aa0ff, #5f84ef);
  color: #fff;
  box-shadow: 0 14px 34px rgba(95, 132, 239, 0.28);
}

.section {
  padding: 122px 0;
}

.section.compact {
  padding-top: 88px;
  padding-bottom: 88px;
}

.section-head {
  margin: 0 auto 58px;
  text-align: center;
}

.section-title {
  margin: 0;
  color: var(--text-heading);
  font-size: clamp(26px, 3.3vw, 48px);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.section-copy {
  max-width: 780px;
  margin: 22px auto 0;
  color: var(--muted-strong);
  font-size: 15px;
  line-height: 1.95;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
}

.feature-card {
  position: relative;
  min-height: 100%;
  padding: 34px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.feature-card h3 {
  margin: 0 0 16px;
  color: var(--text-heading);
  font-size: 28px;
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.feature-card p {
  margin: 0;
  color: var(--muted-strong);
  font-size: 15px;
  line-height: 1.9;
}

.mini-link {
  display: inline-flex;
  margin-top: 26px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px;
}

.product-kicker {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.product-card .mini-link {
  margin-top: 18px;
}

.about-stack {
  display: grid;
  gap: 18px;
}

.about-stack h2 {
  margin: 0 0 10px;
  color: var(--text-heading);
  font-size: 26px;
}

.about-stack p {
  margin: 0;
  color: var(--muted-strong);
  line-height: 1.8;
}

.about-products {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 18px;
}

.about-products a {
  color: var(--brand-strong);
  font-weight: 700;
}

.about-products a:hover {
  text-decoration: underline;
}

.site-footer {
  margin-top: 120px;
  background: var(--footer);
  color: var(--footer-heading);
  border-top: 1px solid var(--footer-line);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 0.8fr;
  gap: 48px;
  padding: 60px 0 40px;
}

.site-footer h3 {
  margin: 0 0 18px;
  color: var(--footer-heading);
  font-size: 18px;
  letter-spacing: -0.01em;
}

.site-footer p,
.site-footer a {
  color: var(--footer-muted);
  font-size: 14px;
  line-height: 2;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--footer-heading);
}

.footer-links {
  display: grid;
  gap: 6px;
}

.footer-bottom {
  border-top: 1px solid var(--footer-line);
  padding: 22px 0 30px;
  color: var(--footer-faint);
  font-size: 12px;
  text-align: center;
}

.footer-legal-line {
  margin: 0;
  line-height: 1.65;
}

.site-footer .footer-icp-link {
  color: var(--footer-muted);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer .footer-icp-link:hover {
  color: var(--footer-heading);
}

.footer-trademark {
  margin: 14px auto 0;
  max-width: 720px;
  color: var(--footer-faint);
  font-size: 11px;
  line-height: 1.7;
}

.bg-wash {
  position: relative;
}

.bg-wash::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 12% 12%, rgba(122, 160, 255, 0.08), transparent 24%),
    radial-gradient(circle at 88% 18%, rgba(242, 136, 119, 0.08), transparent 22%),
    radial-gradient(circle at 78% 86%, rgba(122, 160, 255, 0.05), transparent 24%);
  pointer-events: none;
}

.bg-wash > * {
  position: relative;
}

@media (max-width: 1180px) {
  .site-nav {
    min-height: 88px;
  }

  .nav-links,
  .lang-switch {
    display: none;
  }

  .mobile-lang {
    padding: 8px 0 4px;
    margin-top: 8px;
    border-top: 1px solid var(--line);
  }

  .mobile-lang p {
    margin: 0 0 8px;
    padding: 0 18px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .mobile-lang a {
    display: block;
    padding: 10px 18px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 700;
  }

  .mobile-lang a.current {
    background: var(--brand-soft);
    color: var(--brand-strong);
  }

  .mobile-menu .theme-toggle-btn {
    margin: 12px 18px 0;
    width: calc(100% - 36px);
  }

  .menu-toggle {
    display: inline-flex;
  }

  .product-grid,
  .footer-main,
  .grid-two {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  :root {
    --nav-h: 84px;
  }

  .container {
    width: min(calc(100% - 32px), var(--content));
  }

  .hero {
    padding: 64px 0 32px;
  }

  .section {
    padding: 82px 0;
  }

  .feature-card {
    padding: 26px;
  }

  .brand-copy {
    gap: 6px;
    font-size: 24px;
  }

  .hero-title {
    font-size: clamp(28px, 8.4vw, 40px);
    overflow-wrap: break-word;
  }

  .home-lead {
    font-size: 17px;
    line-height: 1.65;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .site-footer {
    margin-top: 82px;
  }
}