/* Hearby legal / support site — clean, readable, responsive (mobile + desktop) */
:root {
  --bg: #ffffff;
  --fg: #1c1c1e;
  --muted: #6b6b73;
  --line: #e6e6ea;
  --card: #f7f7f9;
  --accent: #e23b4e;
  --link: #0a66c2;
  --maxw: 760px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f12; --fg: #ececf1; --muted: #9a9aa6;
    --line: #26262e; --card: #17171c; --link: #6ea8ff;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI",
    Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

/* Top bar */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar .inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 14px clamp(18px, 5vw, 40px);
  display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 17px; letter-spacing: .3px; color: var(--fg); text-decoration: none; }
.brand .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; }
.brand .en { color: var(--muted); font-weight: 400; }
.topbar nav a { color: var(--muted); text-decoration: none; font-size: 14px; margin-left: 16px; }
.topbar nav a:hover { color: var(--fg); }
@media (max-width: 560px) { .topbar nav { display: none; } }

/* Layout */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: clamp(28px, 6vw, 56px) clamp(18px, 5vw, 40px) 96px; }
h1 { font-size: clamp(26px, 6vw, 34px); line-height: 1.2; margin: 0 0 8px; letter-spacing: -.01em; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.lead { color: var(--fg); font-size: 17px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; margin: 0 0 28px; }
h2 { font-size: clamp(19px, 4.5vw, 22px); margin: 40px 0 12px; scroll-margin-top: 72px; letter-spacing: -.01em; }
h3 { font-size: 17px; margin: 24px 0 8px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); }
strong { font-weight: 650; }
ul, ol { padding-left: 22px; margin: 10px 0; }
li { margin: 6px 0; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
hr { border: none; border-top: 1px solid var(--line); margin: 40px 0; }

/* Table of contents */
.toc { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin: 0 0 36px; }
.toc h2 { font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin: 0 0 10px; }
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin: 5px 0; }
.toc a { color: var(--fg); }

/* Cards / callouts */
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin: 16px 0; }
.card p:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.note { border-left: 3px solid var(--accent); padding-left: 14px; color: var(--muted); margin: 16px 0; }

/* Contact rows (support page) */
.rows { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; margin: 14px 0; }
.row { display: flex; justify-content: space-between; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: none; }
.row .k { color: var(--muted); }
.row .v { font-weight: 600; text-align: right; word-break: break-all; }

/* Footer */
.foot { margin-top: 72px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.foot .nav { margin-top: 10px; }
.foot .nav a { margin-right: 18px; }