:root {
  --ink: #1c1612;
  --ink-soft: #4a3f36;
  --paper: #f3eee6;
  --paper-2: #fffaf4;
  --line: #e3d5c4;
  --gold: #8c6433;
  --gold-2: #c6a36a;
  --wine: #7c2436;
  --pine: #1d453b;
  --good: #1d6b45;
  --bad: #9d2e2e;
  --shadow: 0 18px 50px rgba(48, 28, 12, 0.08);
  --serif: "Fraunces", Georgia, serif;
  --sans: "Outfit", "Avenir Next", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 90% -10%, rgba(198, 163, 106, 0.28), transparent 60%),
    var(--paper);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.55;
}
a { color: inherit; }
img { max-width: 100%; }
.skip {
  position: absolute; left: 1rem; top: -4rem; background: var(--ink); color: white; padding: .5rem .8rem;
}
.skip:focus { top: .5rem; z-index: 20; }
.wrap { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }
.top {
  background: var(--ink); color: #f6efe6; position: sticky; top: 0; z-index: 10;
}
.top .wrap { display: flex; align-items: center; gap: 1.2rem; min-height: 72px; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; font-family: var(--serif); font-size: 1.35rem; }
.brand small { display: block; font-family: var(--sans); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold-2); }
.mark { width: 34px; height: 34px; border: 1px solid var(--gold-2); border-radius: 50%; display: grid; place-items: center; }
.nav { display: flex; gap: 1rem; align-items: center; margin-left: auto; }
.nav a { text-decoration: none; color: #f6efe6; font-size: .95rem; }
.nav a:hover, .nav a:focus-visible { color: var(--gold-2); }
.menu-toggle { display: none; background: transparent; color: white; border: 1px solid var(--gold-2); padding: .4rem .7rem; }
.hero { padding: 4.2rem 0 2rem; display: grid; grid-template-columns: 1.3fr .7fr; gap: 2rem; align-items: end; }
.kicker { letter-spacing: .16em; text-transform: uppercase; color: var(--gold); font-size: .78rem; margin: 0 0 .6rem; }
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 560; letter-spacing: -0.02em; line-height: 1.15; }
h1 { font-size: clamp(2.6rem, 5vw, 4.6rem); margin: 0 0 1rem; }
h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); margin: 0 0 .6rem; }
.lede { font-size: 1.15rem; max-width: 42rem; color: var(--ink-soft); }
.panel {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); padding: 1.1rem 1.2rem;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.section { padding: 2.2rem 0; }
.tier { border-top: 4px solid var(--gold); min-height: 100%; display: flex; flex-direction: column; gap: .4rem; }
.tier strong { font-family: var(--serif); font-size: 1.45rem; }
.price { font-size: 1.35rem; }
.muted { color: var(--ink-soft); }
.btn, button.btn, a.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  background: var(--ink); color: #fffaf4; text-decoration: none; border: 0; border-radius: 999px;
  padding: .7rem 1.05rem; font: inherit; cursor: pointer;
}
.btn.gold { background: var(--gold); color: white; }
.btn.wine { background: var(--wine); color: white; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--gold-2); outline-offset: 2px; }
.row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
.pill { display: inline-block; border-radius: 999px; padding: .15rem .55rem; background: #f0e4d2; font-size: .82rem; }
.pill.good { background: #e5f3ea; color: var(--good); }
.pill.bad { background: #fde8e8; color: var(--bad); }
.pill.warn { background: #fff1d6; }
.swatch { height: 148px; border-radius: 14px 14px 0 0; display: grid; place-items: end start; padding: .8rem; color: white; }
.product { padding: 0; overflow: hidden; }
.product .body { padding: 1rem 1rem 1.1rem; }
.field { display: flex; flex-direction: column; gap: .3rem; margin-bottom: .8rem; }
.field.inline { flex-direction: row; align-items: center; }
label { font-size: .92rem; }
input, select, textarea {
  font: inherit; padding: .65rem .75rem; border-radius: 10px; border: 1px solid #d9cbb8; background: white; color: var(--ink); width: 100%;
}
textarea { min-height: 110px; }
.notice { padding: .8rem 1rem; border-radius: 12px; background: #fff6df; border: 1px solid #ead7a4; margin: 1rem 0; }
.notice.bad { background: #fdecec; border-color: #f0c2c2; }
.notice.good { background: #e8f6ee; border-color: #b7e0c6; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: .7rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); }
.app { display: grid; grid-template-columns: 230px 1fr; gap: 1.2rem; padding: 1.2rem 0 3rem; }
.side a { display: block; text-decoration: none; padding: .45rem .2rem; border-bottom: 1px solid transparent; }
.side a.active, .side a:hover { color: var(--wine); }
.stat { font-family: var(--serif); font-size: 1.8rem; }
.tree, .tree ul { list-style: none; padding-left: 1rem; }
.tree > li, .tree li { margin: .35rem 0; }
.lesson-layout { display: grid; grid-template-columns: 1fr 280px; gap: 1rem; }
.chat {
  position: fixed; right: 1rem; bottom: 1rem; z-index: 30; width: min(380px, calc(100% - 2rem));
}
.chat summary { list-style: none; cursor: pointer; background: var(--wine); color: white; border-radius: 999px; padding: .75rem 1rem; width: fit-content; margin-left: auto; }
.chat summary::-webkit-details-marker { display: none; }
.chat .panel { margin-top: .5rem; max-height: 460px; display: flex; flex-direction: column; }
.log { overflow: auto; display: flex; flex-direction: column; gap: .55rem; max-height: 280px; }
.bubble { padding: .6rem .7rem; border-radius: 12px; background: #f6f0e7; }
.bubble.user { background: var(--ink); color: white; margin-left: 2rem; }
footer.site { margin-top: 2rem; padding: 2rem 0; color: #f6efe6; background: var(--ink); }
footer.site a { color: var(--gold-2); }
.stars { color: var(--gold); letter-spacing: .08em; }
hr.rule { border: 0; border-top: 1px solid var(--line); margin: 1rem 0; }
@media (max-width: 860px) {
  .hero, .grid-4, .grid-3, .grid-2, .app, .lesson-layout { grid-template-columns: 1fr; }
  .menu-toggle { display: inline-flex; margin-left: auto; }
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: var(--ink); padding: 1rem; flex-direction: column; align-items: flex-start; }
  .nav.open { display: flex; }
  .side { display: flex; gap: .8rem; overflow: auto; }
  .side a { white-space: nowrap; }
}