:root {
  --paper: #f6f1e7;
  --card: #fffdf8;
  --ink: #1d2233;
  --soft: #5b6275;
  --navy: #16224a;
  --navy-2: #22346d;
  --gold: #b07a1e;
  --gold-2: #d9a441;
  --line: #e2d9c6;
  --r: 12px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 18px/1.7 Georgia, "Times New Roman", "Noto Serif", serif;
}

.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 18px; }

a { color: var(--navy-2); text-underline-offset: 3px; }
a:hover { color: var(--gold); }
:focus-visible { outline: 3px solid var(--gold-2); outline-offset: 2px; border-radius: 4px; }

h1, h2, h3, .logo, .menu, .toc, .btn, table, .age, .bottom, .crumbs, .note, .demo-cover {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", Arial, sans-serif;
}
h1 { font-size: clamp(1.8rem, 5.5vw, 2.7rem); line-height: 1.15; margin: 0 0 .5em; color: var(--navy); letter-spacing: -.01em; }
h2 { font-size: clamp(1.35rem, 4vw, 1.75rem); line-height: 1.25; margin: 0 0 .6em; color: var(--navy); }
h3 { font-size: 1.05rem; margin: 0; }
p { margin: 0 0 1.1em; }
ul, ol { margin: 0 0 1.1em; padding-left: 1.3em; }
li { margin-bottom: .55em; }

.top { position: sticky; top: 0; z-index: 20; background: var(--navy); color: #fff; }
.top-in { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; min-height: 60px; }
.logo { display: inline-flex; align-items: center; gap: 8px; color: #fff; font-weight: 700; font-size: 1.05rem; text-decoration: none; }
.logo:hover { color: var(--gold-2); }
.logo svg { width: 24px; height: 24px; fill: var(--gold-2); }
.menu-btn { width: 44px; height: 44px; background: none; border: 1px solid rgba(255, 255, 255, .3); border-radius: 10px; position: relative; cursor: pointer; }
.menu-btn i, .menu-btn i::before, .menu-btn i::after { content: ""; position: absolute; left: 11px; width: 20px; height: 2px; background: #fff; }
.menu-btn i { top: 20px; }
.menu-btn i::before { left: 0; top: -6px; }
.menu-btn i::after { left: 0; top: 6px; }
.menu { display: none; flex-basis: 100%; flex-direction: column; padding: 4px 0 14px; }
.menu.open { display: flex; }
.menu a { color: #fff; text-decoration: none; padding: 11px 4px; border-top: 1px solid rgba(255, 255, 255, .14); font-size: .98rem; }
.menu a[aria-current="page"] { color: var(--gold-2); }

.age { background: #ece3d0; color: var(--soft); font-size: .82rem; text-align: center; padding: 6px 12px; }
.age b { background: var(--navy); color: #fff; border-radius: 4px; padding: 1px 6px; margin-right: 6px; }

.crumbs { font-size: .86rem; color: var(--soft); padding-top: 18px; }
.head { padding: 26px 0 10px; max-width: 820px; }
.lead { font-size: 1.12rem; color: var(--soft); }

.btn {
  display: inline-block; border: 0; cursor: pointer; text-decoration: none;
  background: var(--gold-2); color: var(--navy); font-weight: 700; font-size: 1rem; line-height: 1.2;
  padding: 14px 26px; border-radius: 8px;
}
.btn:hover { background: #e7b658; color: var(--navy); }

.demo { margin: 14px 0 22px; }
.demo-frame { position: relative; width: 100%; aspect-ratio: 16 / 9; min-height: 420px; background: #0b1230; border-radius: var(--r); overflow: hidden; border: 3px solid var(--navy); }
.demo-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.demo-cover {
  position: absolute; inset: 0; display: flex; flex-direction: column; gap: 10px; align-items: center; justify-content: center; text-align: center; padding: 20px; color: #fff;
  background: radial-gradient(500px 280px at 50% 35%, rgba(217, 164, 65, .28), transparent 70%), linear-gradient(160deg, #22346d, #0b1230);
}
.demo-cover strong { font-size: 1.3rem; }
.demo-cover span { color: #c9cfe3; max-width: 30em; font-size: .95rem; }
.demo-bolt svg { width: 54px; height: 54px; fill: var(--gold-2); }
.note { font-size: .85rem; color: var(--soft); margin-top: 8px; }

.layout { display: block; }
.toc { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); padding: 16px 18px; margin: 8px 0 10px; font-size: .93rem; }
.toc strong { display: block; margin-bottom: 8px; color: var(--navy); text-transform: uppercase; letter-spacing: .06em; font-size: .78rem; }
.toc ol { margin: 0; padding-left: 1.2em; }
.toc li { margin-bottom: .35em; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

article { min-width: 0; }
article section { padding: 26px 0; border-bottom: 1px solid var(--line); }
article section:last-child { border-bottom: 0; }

.table-wrap { overflow-x: auto; margin: 0 0 1.1em; border: 1px solid var(--line); border-radius: var(--r); background: var(--card); }
table { width: 100%; border-collapse: collapse; font-size: .93rem; line-height: 1.45; }
th, td { padding: 11px 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
thead th { background: var(--navy); color: #fff; font-weight: 600; }
tbody th { font-weight: 600; color: var(--navy); }
tbody tr:nth-child(even) { background: #faf5ea; }

.faq details { background: var(--card); border: 1px solid var(--line); border-radius: var(--r); margin-bottom: 10px; }
.faq summary { cursor: pointer; padding: 14px 44px 14px 18px; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); font: 400 1.5rem system-ui, sans-serif; color: var(--gold); }
.faq details[open] summary::after { content: "−"; }
.faq summary h3 { display: inline; color: var(--navy); }
.faq details p { padding: 0 18px 16px; margin: 0; }

.bottom { margin-top: 34px; background: var(--navy); color: #c9cfe3; padding: 28px 0 36px; font-size: .9rem; line-height: 1.55; }
.bottom a { color: #fff; }
.resp { display: flex; gap: 14px; align-items: flex-start; padding-bottom: 18px; border-bottom: 1px solid rgba(255, 255, 255, .16); }
.resp b { flex: none; display: grid; place-items: center; width: 46px; height: 46px; border: 2px solid var(--gold-2); border-radius: 50%; color: var(--gold-2); }
.resp p { margin: 0; }
.resp strong { color: #fff; }
.foot { display: flex; flex-wrap: wrap; gap: 8px 20px; padding: 18px 0; }
.disc { margin: 0; font-size: .82rem; }

@media (min-width: 1100px) {
  .menu-btn { display: none; }
  .top-in { flex-wrap: nowrap; gap: 14px; }
  .top .wrap { max-width: 1280px; }
  .top-act { order: 3; }
  .menu { margin-left: auto; align-items: center; }
  .langs { padding: 0 0 0 8px; }
  .menu { display: flex; flex-direction: row; flex-basis: auto; padding: 0; gap: 2px; }
  .menu a { border: 0; padding: 8px 10px; border-radius: 6px; font-size: .92rem; white-space: nowrap; }
  .menu .lang { padding: 5px 8px; }
  .menu a:hover { background: var(--navy-2); }
  .head { padding-top: 40px; }
  .demo-frame { min-height: 0; }
  .layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 40px; align-items: start; }
  .layout > article:only-child { grid-column: 1 / -1; max-width: 820px; }
  .toc { position: sticky; top: 78px; margin: 26px 0 0; max-height: calc(100vh - 100px); overflow: auto; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.top-act { display: flex; align-items: center; gap: 10px; }
.bonus { background: #1f9d55; color: #fff; box-shadow: 0 4px 14px rgba(31, 157, 85, .35); }
.bonus:hover { background: #23b061; color: #fff; }
.bonus.small { padding: 10px 16px; font-size: .92rem; white-space: nowrap; }
.langs { display: flex; gap: 6px; padding: 12px 4px 0; }
.menu .lang { border: 1px solid rgba(255, 255, 255, .35); border-radius: 6px; padding: 6px 10px; font-size: .85rem; font-weight: 600; }
.menu .lang.on { background: #fff; color: var(--navy); border-color: #fff; }
.demo-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 10px 0 0; }
.demo-actions .note { margin: 0; }
.cta { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; margin: 26px 0 8px; padding: 22px 24px; background: var(--card); border: 2px solid #1f9d55; border-radius: var(--r); }
.cta h2 { margin-bottom: .2em; }
.cta p { margin: 0; }
@media (min-width: 760px) { .cta { flex-direction: row; align-items: center; justify-content: space-between; } }
.logo .full { display: none; }
.top-in { flex-wrap: wrap; column-gap: 10px; }
.bonus.small { padding: 9px 13px; font-size: .88rem; }
@media (min-width: 560px) { .logo .full { display: inline; } .logo .short { display: none; } .bonus.small { padding: 10px 16px; font-size: .92rem; } }

.help { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 16px 0; border-bottom: 1px solid rgba(255, 255, 255, .16); }
.help .hb { display: inline-flex; align-items: center; gap: 6px; border: 1px solid rgba(255, 255, 255, .35); border-radius: 999px; padding: 6px 14px; color: #fff; text-decoration: none; font-weight: 600; font-size: .86rem; }
.help a.hb:hover { border-color: var(--gold-2); color: var(--gold-2); }
.help .age18 { border-color: var(--gold-2); color: var(--gold-2); }
.help b { color: var(--gold-2); }
.byline { font: .86rem/1.4 system-ui, -apple-system, 'Segoe UI', sans-serif; color: var(--soft); margin: 0 0 .9em; }