/* Public product-support site: intentionally limited to personal developer information and help. */
:root {
  --ink: #10203f;
  --muted: #5f6f8d;
  --line: #dce4f2;
  --canvas: #f5f8fd;
  --surface: #ffffff;
  --blue: #2563eb;
  --violet: #7047e8;
  --radius: 18px;
  --content: min(1120px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--canvas); font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid rgba(37, 99, 235, .3); outline-offset: 3px; }

.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(220, 228, 242, .88); background: rgba(255, 255, 255, .92); backdrop-filter: blur(16px); }
.site-nav { width: var(--content); min-height: 68px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 750; letter-spacing: -.02em; }
.brand img { width: 36px; height: 36px; border-radius: 10px; }
.nav-links { display: flex; align-items: center; gap: 20px; color: var(--muted); font-size: 14px; }
.nav-links a:hover { color: var(--blue); }
.full-site-only { display: none !important; }
.nav-account { min-height: 44px; align-items: center; padding: 0 14px; border: 1px solid #cdd9f2; border-radius: 999px; color: var(--blue); font-weight: 700; }
.nav-account:hover { border-color: #a9bdea; background: #f5f8ff; }
.site-main { width: var(--content); margin: 0 auto; }
.hero { padding: 104px 0 72px; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(280px, .72fr); align-items: center; gap: 56px; }
.eyebrow { margin: 0 0 13px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .14em; }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -.04em; }
h1 { max-width: 670px; font-size: clamp(42px, 6vw, 70px); }
h2 { font-size: clamp(28px, 4vw, 42px); }
h3 { font-size: 19px; }
.hero p:not(.eyebrow) { max-width: 600px; margin: 25px 0 0; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 0 18px; border: 1px solid transparent; border-radius: 999px; font-weight: 700; }
.button.primary { color: #fff; background: linear-gradient(110deg, var(--blue), var(--violet)); box-shadow: 0 12px 30px rgba(76, 73, 205, .22); }
.button.secondary { border-color: var(--line); background: var(--surface); color: var(--ink); }
.hero-art { padding: 28px; border: 1px solid #d7e1fb; border-radius: 28px; background: radial-gradient(circle at 95% 8%, #dcd5ff, transparent 33%), linear-gradient(145deg, #edf4ff, #f9f7ff); box-shadow: 0 28px 70px rgba(26, 52, 101, .12); }
.hero-art img { display: block; width: 96px; height: 96px; margin-bottom: 28px; border-radius: 26px; box-shadow: 0 18px 34px rgba(52, 78, 194, .22); }
.hero-art strong { display: block; font-size: 24px; }
.hero-art p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.section { padding: 74px 0; border-top: 1px solid var(--line); }
.section-heading { max-width: 670px; }
.section-heading p { color: var(--muted); margin: 15px 0 0; }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.card { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.card p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.card a { color: var(--blue); font-size: 14px; font-weight: 700; }
.card a:hover { text-decoration: underline; }
.notice { margin-top: 32px; padding: 20px 22px; border: 1px solid #d8e4ff; border-radius: 14px; color: #38517f; background: #eef4ff; font-size: 14px; }
.timeline { display: grid; gap: 0; margin-top: 30px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.timeline article { padding: 22px 24px; border-top: 1px solid var(--line); }
.timeline article:first-child { border-top: 0; }
.timeline time { display: block; margin-bottom: 5px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.timeline p { margin: 7px 0 0; color: var(--muted); font-size: 14px; }
.legal { max-width: 780px; padding: 70px 0; }
.legal h1 { font-size: clamp(34px, 5vw, 50px); }
.legal .updated { margin: 14px 0 38px; color: var(--muted); font-size: 14px; }
.legal h2 { margin-top: 42px; font-size: 24px; }
.legal p, .legal li { color: #34435e; }
.legal a { color: var(--blue); text-decoration: underline; }
.legal ul { padding-left: 22px; }
.deletion-steps { counter-reset: step; display: grid; gap: 16px; margin: 30px 0; }
.deletion-steps li { position: relative; min-height: 64px; padding: 18px 20px 18px 74px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); list-style: none; }
.deletion-steps li::before { counter-increment: step; content: counter(step); position: absolute; top: 18px; left: 20px; display: grid; width: 34px; height: 34px; place-items: center; border-radius: 50%; color: var(--blue); background: #eaf1ff; font-weight: 800; }
.site-footer { border-top: 1px solid var(--line); background: #fff; }
.footer-inner { width: var(--content); margin: 0 auto; padding: 28px 0; display: flex; align-items: center; justify-content: space-between; gap: 18px; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 14px; }
.footer-links a:hover { color: var(--blue); }

@media (max-width: 760px) {
  :root { --content: min(100% - 32px, 1120px); }
  .site-nav { min-height: 60px; }
  .nav-links { gap: 13px; font-size: 13px; }
  .nav-links a:nth-child(n+4) { display: none; }
  .hero { grid-template-columns: 1fr; gap: 32px; padding: 66px 0 54px; }
  .hero p:not(.eyebrow) { font-size: 16px; }
  .cards { grid-template-columns: 1fr; }
  .section { padding: 54px 0; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}