:root {
  color-scheme: light;
  --ink: #172133;
  --muted: #647085;
  --line: #e3e8f0;
  --paper: #fff;
  --wash: #f5f7fb;
  --blue: #386ee8;
  --blue-dark: #2753bd;
  --violet: #7256dc;
  --mint: #dff6ee;
  --shadow: 0 22px 70px rgba(28, 43, 72, .12);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #82a8ff; outline-offset: 3px; }

.container { width: min(1120px, calc(100% - 44px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.9); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(226,231,239,.8); }
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; font-size: 19px; font-weight: 800; letter-spacing: -.6px; }
.brand img { width: 39px; height: 39px; }
.brand small { display: block; color: var(--muted); font: 600 10px -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; letter-spacing: .09em; text-transform: uppercase; margin-top: 1px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: #515e72; text-decoration: none; font-size: 14px; font-weight: 600; white-space: nowrap; transition: color .18s ease; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--blue); }
.nav-links .nav-cta { padding: 11px 16px; background: var(--ink); color: white; border-radius: 10px; }
.nav-links .nav-cta:hover { background: var(--blue-dark); color: white; }
.mobile-menu { display: none; position: relative; }
.mobile-menu summary { min-height: 40px; display: inline-flex; align-items: center; gap: 9px; padding: 0 12px; border: 1px solid var(--line); border-radius: 11px; background: white; color: var(--ink); font-size: 13px; font-weight: 700; cursor: pointer; list-style: none; }
.mobile-menu summary::-webkit-details-marker { display: none; }
.mobile-menu summary::marker { content: ''; }
.menu-icon { color: var(--blue); font-size: 16px; line-height: 1; transition: transform .18s ease; }
.mobile-menu[open] .menu-icon { transform: rotate(90deg); }
.mobile-menu-panel { position: absolute; z-index: 30; top: calc(100% + 10px); right: 0; width: min(250px, calc(100vw - 32px)); padding: 7px; border: 1px solid var(--line); border-radius: 14px; background: white; box-shadow: 0 16px 38px rgba(22, 34, 55, .17); }
.mobile-menu-panel a { display: block; padding: 12px 13px; border-radius: 9px; color: #46536a; font-size: 14px; font-weight: 600; text-decoration: none; }
.mobile-menu-panel a:hover, .mobile-menu-panel a[aria-current="page"] { color: var(--blue-dark); background: #f0f5ff; }

.hero { overflow: hidden; padding: 86px 0 82px; background: radial-gradient(ellipse at 78% 43%, #e4ecff 0, rgba(237,240,255,.5) 30%, transparent 61%), linear-gradient(180deg, #fbfcff, #fff); }
.hero-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: 46px; }
.hero-grid > * { min-width: 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--blue-dark); background: #edf3ff; border: 1px solid #dbe7ff; border-radius: 999px; padding: 7px 11px; font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.eyebrow-dot { width: 7px; height: 7px; border-radius: 50%; background: #4aa984; box-shadow: 0 0 0 4px #d9f2e8; }
h1, h2, h3 { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; letter-spacing: -.045em; }
h1 { max-width: 560px; font-size: clamp(42px, 5.4vw, 67px); line-height: 1.06; margin: 22px 0 20px; }
h1 em { color: var(--blue); font-style: normal; }
.hero-copy { max-width: 520px; color: #58657a; font-size: 18px; line-height: 1.72; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 28px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border-radius: 12px; padding: 0 18px; text-decoration: none; font-weight: 700; font-size: 14px; transition: transform .18s ease, background .18s ease, box-shadow .18s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--blue); color: white; box-shadow: 0 9px 22px rgba(56,110,232,.24); }
.button-primary:hover { background: var(--blue-dark); }
.button-secondary { color: var(--ink); border: 1px solid #dce2ec; background: white; }
.hero-note { color: #7c8799; font-size: 12px; margin: 14px 0 0; }
.hero-art { position: relative; margin: 0; }
.hero-art img { display: block; width: 100%; border-radius: 22px; box-shadow: var(--shadow); }
.preview-caption { margin: 12px 8px 0; text-align: right; color: #69758a; font-size: 11px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 13px 23px; margin-top: 32px; color: #69758a; font-size: 13px; }
.trust-row span { display: inline-flex; align-items: center; gap: 7px; }
.trust-row b { color: #23835e; font-size: 15px; }

.section { padding: 82px 0; }
.section-soft { background: var(--wash); }
.section-heading { max-width: 670px; margin: 0 auto 42px; text-align: center; }
.section-heading h2 { font-size: clamp(30px, 4vw, 44px); line-height: 1.15; margin: 13px 0; }
.section-heading p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.7; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 17px; }
.feature-card { background: white; border: 1px solid var(--line); border-radius: 18px; padding: 24px; min-height: 205px; }
.feature-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 13px; color: var(--blue); background: #edf3ff; font-size: 21px; }
.feature-card h3 { margin: 20px 0 8px; font-size: 18px; letter-spacing: -.025em; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.workflow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: flow; }
.step { position: relative; counter-increment: flow; padding-top: 57px; }
.step::before { content: '0' counter(flow); position: absolute; left: 0; top: 0; color: var(--blue); font: 800 31px -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; letter-spacing: -.06em; }
.step h3 { font-size: 19px; margin: 0 0 9px; }
.step p { color: var(--muted); margin: 0; line-height: 1.7; font-size: 14px; }
.callout { display: flex; align-items: center; justify-content: space-between; gap: 28px; margin-top: 54px; padding: 28px 32px; border-radius: 20px; background: #172133; color: white; }
.callout h2 { margin: 0 0 7px; font-size: 24px; }
.callout p { margin: 0; color: #bac5d7; line-height: 1.6; font-size: 14px; }
.callout .button { flex: none; background: white; color: var(--ink); }
.requirements { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 28px; }
.requirements span { border: 1px solid var(--line); border-radius: 999px; background: white; color: #526075; padding: 9px 13px; font-size: 12px; }

.page-hero { padding: 66px 0 44px; background: linear-gradient(180deg, #f7f9ff, #fff); }
.page-hero h1 { font-size: clamp(38px, 5vw, 54px); margin: 14px 0; }
.page-hero p { max-width: 720px; color: var(--muted); line-height: 1.75; font-size: 17px; }
.content-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 48px; padding: 20px 0 88px; align-items: start; }
.toc { position: sticky; top: 102px; padding: 17px; border: 1px solid var(--line); border-radius: 15px; background: #fbfcfe; }
.toc strong { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: #8792a4; margin: 0 0 12px; }
.toc a { display: block; padding: 8px 0; color: #556278; font-size: 13px; text-decoration: none; }
.toc a:hover { color: var(--blue); }
.article { max-width: 760px; }
.article h2 { margin: 36px 0 11px; font-size: 25px; letter-spacing: -.03em; scroll-margin-top: 105px; }
.article h2:first-child { margin-top: 0; }
.article h3 { margin: 23px 0 8px; font-size: 17px; letter-spacing: -.02em; }
.article p, .article li { color: #536075; font-size: 15px; line-height: 1.78; }
.article p { margin: 9px 0; }
.article ul, .article ol { padding-left: 22px; }
.article li { padding-left: 4px; margin: 6px 0; }
.article a { color: var(--blue-dark); text-underline-offset: 3px; }
.tip { margin: 17px 0; padding: 16px 18px; border-left: 3px solid var(--blue); background: #f0f5ff; border-radius: 0 12px 12px 0; color: #44526b; line-height: 1.7; font-size: 14px; }
.warning { border-left-color: #d58e26; background: #fff8e9; }
.privacy-meta { color: #7b8698 !important; font-size: 13px !important; }
.policy-card { margin: 18px 0; padding: 19px; border: 1px solid var(--line); border-radius: 14px; background: #fbfcff; }
.policy-card h3 { margin-top: 0; }
.faq-list { max-width: 820px; margin: auto; border-top: 1px solid var(--line); }
.faq-list details { padding: 18px 3px; border-bottom: 1px solid var(--line); }
.faq-list summary { cursor: pointer; font-weight: 700; font-size: 16px; list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: '+'; color: var(--blue); font-size: 23px; line-height: 1; }
.faq-list details[open] summary::after { content: '−'; }
.faq-list p { margin: 12px 34px 0 0; color: var(--muted); font-size: 14px; line-height: 1.7; }

.site-footer { border-top: 1px solid var(--line); background: #fbfcfe; padding: 31px 0; }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.footer-copy { color: #768195; font-size: 12px; line-height: 1.65; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-links a { color: #566277; font-size: 12px; text-decoration: none; }
.footer-links a:hover { color: var(--blue); }

@media (max-width: 860px) {
  .hero { padding: 62px 0 56px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-art { margin: 0 -5px; }
  .hero-art img { border-radius: 16px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .content-layout { grid-template-columns: 1fr; gap: 26px; }
  .toc { position: static; display: flex; flex-wrap: wrap; gap: 5px 16px; align-items: center; }
  .toc strong { width: 100%; }
  .toc a { padding: 3px 0; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .mobile-menu { display: block; }
}
@media (max-width: 600px) {
  .container { width: min(100% - 32px, 1120px); }
  .nav { min-height: 66px; }
  .brand { font-size: 17px; }
  .brand img { width: 35px; height: 35px; }
  .hero { padding: 48px 0 48px; }
  h1 { font-size: clamp(39px, 12vw, 54px); }
  .hero-copy { font-size: 16px; }
  .section { padding: 60px 0; }
  .feature-grid, .workflow { grid-template-columns: 1fr; gap: 12px; }
  .feature-card { min-height: auto; }
  .workflow { gap: 26px; }
  .callout { align-items: flex-start; flex-direction: column; padding: 24px; }
  .page-hero { padding: 48px 0 26px; }
  .content-layout { padding-bottom: 62px; }
  .footer-row { align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}