/* Trang chính sách ranalabs.net theo RANA ARC 1 (26/10/2026): phông hệ thống, nền xám, một thẻ trắng bo 24, bo góc vuông.
   51 ngôn ngữ, mỗi ngôn ngữ một trang (/<mã>/<trang>); ô chọn ở chân trang. Dùng thuộc tính logic (inline-start/end)
   nên tiếng Ả Rập, Do Thái, Ba Tư (dir="rtl") tự lật bố cục. */
:root {
  --bg: #eef0f3; --card: #fff; --ink: #1d1f23; --text: #3a3e45; --muted: #5b6069; --line: #d9dce3; --hover: #eceef2;
  --green: #8ccb72; --link: #2f6b12; --chip: #e7f4df; --chip-text: #2f5a16; --mark: #1d1f23; --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1113; --card: #1a1d21; --ink: #e8eaed; --text: #c9cdd3; --muted: #a6abb3; --line: #353a41; --hover: #272b31;
    --link: #9fd884; --chip: #24331d; --chip-text: #b6e3a0; --mark: #e8eaed; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh; min-height: 100dvh; display: flex; flex-direction: column; background: var(--bg); color: var(--text);
  font: 400 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--link); text-underline-offset: 3px; }
.wrap { width: 100%; max-width: 860px; margin: 0 auto; padding: 0 20px; }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px 20px; flex-wrap: wrap; min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-size: 17px; }
.brand b { font-weight: 700; }
.brand svg { width: 28px; height: 28px; color: var(--mark); }
nav { display: flex; gap: 4px 6px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; padding: 8px 10px; border-radius: var(--radius); }
nav a:hover { background: var(--hover); color: var(--ink); }
nav a[aria-current] { background: var(--chip); color: var(--chip-text); font-weight: 600; }
main { flex: 1 0 auto; padding: 28px 0 48px; }
h1 { color: var(--ink); font-size: 34px; font-weight: 500; line-height: 1.2; letter-spacing: -.6px; margin: 0; }
.updated { color: var(--muted); font-size: 14px; margin: 8px 0 22px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: 38px 46px; }
h2 { color: var(--ink); font-size: 19px; font-weight: 500; margin: 30px 0 8px; }
h2:first-child { margin-top: 0; }
h3 { color: var(--ink); font-size: 16px; font-weight: 500; margin: 20px 0 6px; }
p, li { margin: 0 0 12px; }
ul { padding-inline-start: 20px; margin: 0 0 12px; }
.lead { font-size: 16px; color: var(--ink); }
.note { color: var(--muted); font-size: 14px; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin: 16px 0 8px; }
.plan { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; background: var(--bg); }
.plan b { display: block; color: var(--ink); font-weight: 600; }
.plan .price { color: var(--ink); font-size: 22px; font-weight: 600; margin: 6px 0 2px; }
.plan small { color: var(--muted); font-size: 13px; }
footer .wrap {
  display: flex; justify-content: space-between; align-items: center; gap: 12px 20px; flex-wrap: wrap;
  padding-top: 18px; padding-bottom: calc(22px + env(safe-area-inset-bottom)); color: var(--muted); font-size: 13px;
}
footer .end { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

/* Nút ngôn ngữ ở chân trang + hộp chọn ngôn ngữ giống hệt account.ranalabs.net (chủ dự án yêu cầu đồng bộ 27/10/2026). */
.lang { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 12px; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--card); color: var(--ink); font: inherit; font-size: 14px; cursor: pointer;
}
.lang-btn:hover { background: var(--hover); }
.lang-btn svg { width: 16px; height: 16px; flex: none; }
dialog.langdialog {
  width: min(460px, calc(100% - 32px)); height: min(680px, calc(100vh - 48px)); height: min(680px, calc(100dvh - 48px));
  max-height: none; padding: 20px 12px 12px; border: 0; border-radius: 24px; background: var(--card); color: var(--ink);
  flex-direction: column; box-shadow: 0 24px 64px rgba(10, 12, 15, .24);
}
dialog.langdialog[open] { display: flex; }
dialog.langdialog::backdrop { background: rgba(10, 12, 15, .45); }
.lang-head { display: flex; align-items: center; gap: 8px; padding-inline: 12px 4px; margin-bottom: 12px; }
.lang-head h2 { flex: 1; min-width: 0; margin: 0; font-size: 20px; }
.lang-x { flex: none; width: 44px; height: 44px; border: 0; border-radius: 50%; display: grid; place-items: center; background: transparent; color: var(--muted); cursor: pointer; }
.lang-x:hover { background: var(--hover); color: var(--ink); }
.lang-x:focus-visible { outline: 2px solid var(--link); }
.lang-search { position: relative; flex: none; margin: 0 4px 4px; }
.lang-glass { position: absolute; inset-inline-start: 14px; top: 50%; transform: translateY(-50%); display: flex; color: var(--muted); pointer-events: none; }
.lang-q {
  width: 100%; height: 48px; padding-inline: 42px 14px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--bg); color: var(--ink); font: inherit; font-size: 16px;
}
.lang-q::placeholder { color: var(--muted); }
.lang-q:focus { outline: none; border: 2px solid var(--link); padding-inline: 41px 13px; background: var(--card); }
.lang-list { flex: 1; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 2px 4px 6px; scrollbar-width: none; }
.lang-list::-webkit-scrollbar { display: none; width: 0; height: 0; }
.lang-opt {
  width: 100%; min-height: 54px; display: flex; align-items: center; gap: 12px; padding: 8px 12px; margin: 1px 0;
  border: 0; border-radius: 14px; background: transparent; color: var(--ink); font: inherit; text-align: start; cursor: pointer;
}
.lang-opt:hover { background: var(--hover); }
.lang-opt:focus-visible { outline: 2px solid var(--link); outline-offset: -2px; }
.lang-opt[aria-selected="true"] { background: var(--chip); color: var(--chip-text); }
.lang-txt { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: flex-start; gap: 1px; text-align: start; }
.lang-txt b { font-size: 15px; font-weight: 600; unicode-bidi: isolate; }
.lang-txt small { font-size: 13px; color: var(--muted); }
.lang-opt[aria-selected="true"] small { color: var(--chip-text); }
.lang-tick { flex: none; display: flex; color: var(--link); visibility: hidden; }
.lang-tick svg { width: 20px; height: 20px; }
.lang-opt[aria-selected="true"] .lang-tick { visibility: visible; }
.lang-empty { margin: 28px 12px; text-align: center; color: var(--muted); }
@media (max-width: 760px) {
  .top .wrap { min-height: 0; padding-top: 16px; padding-bottom: 6px; }
  h1 { font-size: 26px; }
  .card { border-radius: 0; border-inline: 0; padding: 22px 20px; margin: 0 -20px; }
}
@media (max-width: 520px) {
  dialog.langdialog {
    width: 100%; max-width: 100%; height: calc(100vh - 40px); height: calc(100dvh - 40px); margin: auto 0 0;
    border-radius: 24px 24px 0 0; padding-bottom: calc(12px + env(safe-area-inset-bottom));
  }
}