:root {
  --color-blue: #2563EB;
  --color-ink: #0A0A0A;
  --color-dark: #0B0F14;
  --color-white: #FFFFFF;
  --color-border: #E5E7EB;
  --color-soft: #F7F9FC;
  --color-muted: #4B5563;
  --max-width: 1120px;
  --max-width-narrow: 820px;
  --radius: 18px;
  --font-ui: system-ui, "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--color-ink);
  background: var(--color-white);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

main {
  overflow-x: hidden;
}

a {
  color: inherit;
}

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

section[id] {
  scroll-margin-top: 110px;
}

.container {
  width: min(100% - 40px, var(--max-width));
  margin: 0 auto;
}

.narrow {
  width: min(100% - 40px, var(--max-width-narrow));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(229, 231, 235, 0.95);
  backdrop-filter: blur(10px);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-inner {
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  width: fit-content;
}

.brand-mark {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.brand-logo {
  display: block;
  width: auto;
  height: 34px;
}

.site-nav,
.footer-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a,
.footer-nav a {
  text-decoration: none;
  color: var(--color-muted);
  font-weight: 500;
}

.site-nav a:hover,
.footer-nav a:hover,
.text-link:hover,
.contact-box a:hover {
  color: var(--color-blue);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--color-blue);
  color: var(--color-white);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
}

.button:hover {
  opacity: 0.94;
}

.button-small {
  min-height: 42px;
  padding: 0 16px;
  font-size: 0.95rem;
}

.hero {
  padding: 78px 0 68px;
}

.hero-inner {
  max-width: 880px;
}

.eyebrow,
.section-label {
  margin: 0 0 14px;
  color: var(--color-blue);
  font-weight: 700;
  letter-spacing: 0.01em;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 780px;
  font-size: clamp(2.4rem, 5.2vw, 4.8rem);
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.8rem, 3vw, 2.55rem);
}

h3 {
  margin-bottom: 14px;
  font-size: 1.12rem;
}

p {
  margin: 0 0 18px;
}

.hero-text {
  margin-top: 24px;
  max-width: 720px;
  font-size: 1.12rem;
  color: var(--color-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 30px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-weight: 600;
  color: var(--color-muted);
}

.section {
  padding: 76px 0;
}

.section-alt {
  background: var(--color-soft);
}

.section-contact {
  border-top: 1px solid var(--color-border);
  padding-top: 82px;
  padding-bottom: 86px;
}

.feature-list {
  margin: 0 0 18px;
  padding-left: 20px;
}

.feature-list li {
  margin-bottom: 10px;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 30px 0;
}

.principles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.card,
.note-box,
.contact-box {
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-white);
}

.card,
.note-box {
  box-shadow: 0 1px 2px rgba(11, 15, 20, 0.03);
}

.note-box {
  margin-top: 20px;
}

.contact-box {
  margin-top: 28px;
  max-width: 680px;
  background: #FBFCFE;
}

.contact-box p {
  margin-bottom: 14px;
}

.contact-box p:last-child {
  margin-bottom: 0;
}

.site-footer {
  padding: 38px 0 46px;
  border-top: 1px solid var(--color-border);
  background: #FBFCFE;
}

.footer-inner {
  align-items: flex-start;
}

.footer-brand-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-logo-link {
  display: inline-flex;
  width: fit-content;
}

.footer-logo {
  display: block;
  width: auto;
  height: 26px;
}

.footer-company {
  margin: 0;
  font-weight: 600;
  color: #374151;
}

.site-footer p:last-child {
  margin-bottom: 0;
}

.legal-page h1 {
  margin-bottom: 28px;
}

.legal-page h2 {
  margin-top: 34px;
  margin-bottom: 12px;
  font-size: 1.35rem;
}

.legal-page p,
.legal-page ul {
  max-width: 760px;
}

.legal-page ul {
  margin-bottom: 18px;
}

@media (max-width: 860px) {
  .header-inner {
    flex-wrap: wrap;
    align-items: center;
    row-gap: 14px;
    padding: 14px 0;
    min-height: unset;
  }

  .site-nav {
    order: 3;
    width: 100%;
    gap: 18px;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
  }

  .content-grid,
  .principles {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 24px;
  }
}

@media (max-width: 560px) {
  .container,
  .narrow {
    width: min(100% - 28px, var(--max-width));
  }

  .brand-logo {
    height: 30px;
  }

  .footer-logo {
    height: 24px;
  }

  .site-nav,
  .footer-nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero {
    padding: 64px 0 54px;
  }

  .section {
    padding: 62px 0;
  }

  .section-contact {
    padding-top: 68px;
    padding-bottom: 72px;
  }

  .card,
  .note-box,
  .contact-box {
    padding: 22px;
  }
}