:root {
  color-scheme: light;
  --ink: #161617;
  --muted: #6e6e73;
  --soft: #f5f5f7;
  --line: #d2d2d7;
  --blue: #0071e3;
  --blue-dark: #005bb5;
  --green: #1d7f56;
  --max: 1180px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #fff; color: var(--ink); line-height: 1.55; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(210,210,215,.78); background: rgba(255,255,255,.88); backdrop-filter: saturate(180%) blur(18px); }
.nav-wrap { width: min(100% - 40px, var(--max)); min-height: 52px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { font-weight: 700; letter-spacing: 0; }
.brand-mark { display: inline-grid; place-items: center; width: 25px; height: 25px; margin-right: 8px; border-radius: 7px; background: var(--ink); color: #fff; font-size: .72rem; vertical-align: -2px; }
.site-nav { display: flex; align-items: center; gap: 25px; color: #424245; font-size: .9rem; }
.site-nav a:hover { color: var(--blue); }
.nav-cta, .button-primary { border-radius: 999px; background: var(--blue); color: #fff; font-weight: 600; }
.nav-cta { padding: 7px 15px; }
.nav-cta:hover, .button-primary:hover { background: var(--blue-dark); color: #fff; }
.menu-toggle { display: none; border: 0; background: transparent; color: var(--ink); font-size: 1.25rem; }
.container { width: min(100% - 40px, var(--max)); margin: 0 auto; }
.hero { background: var(--soft); padding: clamp(72px, 10vw, 128px) 0 88px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(360px, .92fr); align-items: center; gap: clamp(40px, 8vw, 110px); }
.eyebrow { margin: 0 0 18px; color: var(--blue); font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 680px; margin-bottom: 22px; font-size: 6rem; line-height: .98; letter-spacing: 0; }
h2 { margin-bottom: 18px; font-size: 3.8rem; line-height: 1.04; letter-spacing: 0; }
h3 { margin-bottom: 9px; font-size: 1.15rem; letter-spacing: 0; }
.lead { max-width: 620px; color: #424245; font-size: 1.25rem; }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button-primary, .button-secondary { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 0 21px; border: 1px solid transparent; font-size: .96rem; }
.button-secondary { border-color: var(--line); background: #fff; color: var(--ink); }
.button-secondary:hover { border-color: var(--ink); }
.hero-visual { min-width: 0; }
.product-frame { overflow: hidden; border: 1px solid #d8d8dc; border-radius: 8px; background: #fff; box-shadow: 0 22px 55px rgba(0,0,0,.12); }
.window-bar { display: flex; align-items: center; gap: 6px; padding: 12px 15px; border-bottom: 1px solid #ececf0; }
.window-dot { width: 8px; height: 8px; border-radius: 50%; background: #d2d2d7; }
.window-title { margin-left: auto; margin-right: auto; color: var(--muted); font-size: .72rem; }
.product-frame img { width: 100%; aspect-ratio: 1.42; object-fit: cover; object-position: center; }
.caption { margin: 12px 2px 0; color: var(--muted); font-size: .75rem; }
.section { padding: 100px 0; }
.section-muted { background: var(--soft); }
.section-heading { max-width: 680px; margin-bottom: 42px; }
.section-heading p { color: var(--muted); font-size: 1.08rem; }
.feature-grid, .method-grid, .steps-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.feature, .method, .step { padding: 25px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.feature p, .method p, .step p { margin-bottom: 0; color: var(--muted); }
.feature-number { margin-bottom: 28px; color: var(--blue); font-size: .8rem; font-weight: 700; }
.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.list { padding: 0; margin: 0; list-style: none; }
.list li { padding: 14px 0; border-top: 1px solid var(--line); }
.list li:last-child { border-bottom: 1px solid var(--line); }
.list strong { display: block; }
.list span { color: var(--muted); font-size: .92rem; }
.auth-shell { min-height: calc(100vh - 52px); display: grid; place-items: center; padding: 64px 0; background: var(--soft); }
.auth-panel { width: min(100%, 430px); padding: 34px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.auth-panel h1 { margin-bottom: 12px; font-size: 2.5rem; }
.auth-panel > p { color: var(--muted); }
.form-field { display: block; margin: 20px 0; color: #424245; font-size: .9rem; font-weight: 600; }
.form-field input { width: 100%; height: 46px; margin-top: 7px; padding: 0 13px; border: 1px solid #b9b9c0; border-radius: 6px; color: var(--ink); font: inherit; font-weight: 400; }
.form-field input:focus { outline: 3px solid rgba(0,113,227,.18); border-color: var(--blue); }
.auth-panel .button-primary { width: 100%; border: 0; cursor: pointer; }
.form-notice { margin: 16px 0 0; padding: 11px 13px; border-left: 3px solid var(--green); background: #f0f8f4; color: #20553e; font-size: .9rem; }
.form-notice-error { border-left-color: #d70015; background: #fff2f2; color: #9b1020; }
.auth-switch { margin-top: 22px; color: var(--muted); font-size: .9rem; text-align: center; }
.auth-switch a { color: var(--blue); }
.account-shell { min-height: calc(100vh - 52px); padding: 72px 0 96px; background: var(--soft); }
.account-content h1 { max-width: none; margin-bottom: 14px; font-size: 3.6rem; }
.account-lead { color: var(--muted); font-size: 1.08rem; }
.account-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 38px; }
.account-card { min-height: 162px; padding: 25px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.account-label { margin-bottom: 14px; color: var(--muted); font-size: .82rem; font-weight: 700; }
.account-value { margin-bottom: 10px; font-size: 1.25rem; font-weight: 600; overflow-wrap: anywhere; }
.account-meta { margin-bottom: 0; color: var(--muted); font-size: .9rem; }
.account-actions { margin-top: 28px; }
.account-actions button { cursor: pointer; }
.account-actions button:disabled { cursor: wait; opacity: .65; }
.site-footer { padding: 28px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }
.footer-wrap { display: flex; justify-content: space-between; gap: 18px; }
@media (max-width: 820px) {
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: 52px; left: 0; right: 0; display: none; padding: 14px 20px 20px; border-bottom: 1px solid var(--line); background: #fff; }
  .site-nav.is-open { display: grid; }
  .hero-grid, .split { grid-template-columns: 1fr; gap: 44px; }
  .feature-grid, .method-grid, .steps-grid { grid-template-columns: 1fr; }
  .account-grid { grid-template-columns: 1fr; }
  h1 { font-size: 4rem; }
  h2 { font-size: 2.7rem; }
  .lead { font-size: 1.1rem; }
}
@media (max-width: 500px) {
  .nav-wrap, .container { width: min(100% - 28px, var(--max)); }
  .hero { padding-top: 60px; }
  .section { padding: 70px 0; }
  .auth-panel { padding: 24px; }
  .footer-wrap { display: grid; }
}