:root {
  --bg: #f7f8fb;
  --text: #0b1220;
  --muted: #4e5f77;
  --panel: #ffffff;
  --panel-2: #eef3fb;
  --border: #b9c7dc;
  --brand: #123c69;
  --brand-2: #09233f;
  --accent: #c98a00;
  --danger: #a0202a;
  --success: #0f6b4e;
  --shadow: 0 18px 50px rgba(12, 42, 80, .14);
  --focus: #143fff;
}
[data-theme="dark"] {
  --bg: #070b14;
  --text: #f7fbff;
  --muted: #c5d3e8;
  --panel: #101827;
  --panel-2: #16243a;
  --border: #42617f;
  --brand: #8bd3ff;
  --brand-2: #d6ecff;
  --accent: #ffd166;
  --danger: #ff9aa2;
  --success: #98f5cf;
  --shadow: 0 22px 60px rgba(0, 0, 0, .45);
  --focus: #ffd166;
}
* { box-sizing: border-box; }
html { background: var(--bg); color: var(--text); }
body { margin: 0; min-height: 100vh; font-family: Inter, "Segoe UI", Arial, sans-serif; background: radial-gradient(circle at top left, rgba(244,176,0,.12), transparent 32rem), var(--bg); color: var(--text); }
a { color: var(--brand); }
a:hover { color: var(--brand-2); }
.skip { position: absolute; left: -999px; top: 1rem; background: var(--accent); color: #101010; padding: .7rem 1rem; border-radius: .8rem; z-index: 99; }
.skip:focus { left: 1rem; }
.topbar { position: sticky; top: 0; z-index: 20; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .8rem 1rem; background: color-mix(in srgb, var(--panel) 88%, transparent); border-bottom: 1px solid var(--border); backdrop-filter: blur(10px); }
.brand { display: flex; align-items: center; gap: .65rem; font-weight: 900; font-size: 1.05rem; text-decoration: none; color: var(--text); }
.brand-mark { display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border-radius: .9rem; background: var(--brand); color: var(--bg); box-shadow: var(--shadow); }
.theme-toggle, .btn, button { border: 0; border-radius: 999px; padding: .72rem 1rem; font-weight: 800; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: .35rem; }
.btn:disabled, button:disabled { opacity: .55; cursor: not-allowed; }
.theme-toggle { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.userbar { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .8rem; align-items: center; padding: .55rem 1rem; background: var(--panel-2); border-bottom: 1px solid var(--border); font-size: .92rem; }
.sidebar { position: fixed; top: 7.05rem; left: 0; bottom: 0; width: 15.5rem; overflow-y: auto; padding: .9rem; border-right: 1px solid var(--border); background: var(--panel); }
.nav-link { display: flex; align-items: center; gap: .55rem; padding: .78rem .85rem; border-radius: 1rem; color: var(--text); text-decoration: none; font-weight: 800; margin-bottom: .35rem; }
.nav-link:hover, .nav-link.active { background: var(--panel-2); outline: 1px solid var(--border); }
.main { padding: 1.25rem; max-width: 1480px; margin: 0 auto; }
.main.with-nav { margin-left: 15.5rem; }
.auth-main { display: grid; place-items: center; min-height: calc(100vh - 7rem); }
.panel, .auth-card, .hero-panel { background: var(--panel); border: 1px solid var(--border); border-radius: 1.35rem; padding: 1.25rem; box-shadow: var(--shadow); margin-bottom: 1.1rem; }
.hero-panel, .auth-card { display: flex; justify-content: space-between; gap: 1.25rem; align-items: center; background: linear-gradient(135deg, color-mix(in srgb, var(--panel) 75%, var(--panel-2)), var(--panel)); }
.auth-card.single { display: block; max-width: 720px; width: 100%; }
.form-card { background: var(--panel); border: 1px solid var(--border); border-radius: 1.1rem; padding: 1rem; min-width: min(420px, 100%); }
.form-card.wide { max-width: 680px; margin: auto; }
.purchase-hero { width: min(1160px, 100%); display: grid; grid-template-columns: 1.25fr .75fr; gap: 1.25rem; align-items: stretch; }
.purchase-copy, .purchase-form, .purchase-status { background: var(--panel); border: 1px solid var(--border); border-radius: 1.35rem; padding: 1.25rem; box-shadow: var(--shadow); }
.purchase-copy { display: flex; flex-direction: column; justify-content: center; }
.purchase-points { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1rem; }
.purchase-points span { border: 1px solid var(--border); border-radius: 999px; padding: .45rem .7rem; background: var(--panel-2); font-weight: 800; }
.eyebrow { text-transform: uppercase; color: var(--brand); font-weight: 900; letter-spacing: .08em; font-size: .76rem; margin: 0 0 .4rem; }
h1 { font-size: clamp(1.7rem, 3.2vw, 3.2rem); margin: 0 0 .55rem; line-height: 1.05; }
h2 { margin: 0 0 .6rem; }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 65rem; }
.stack { display: grid; gap: .85rem; }
label { display: grid; gap: .35rem; font-weight: 800; color: var(--text); }
input, textarea, select { width: 100%; border: 1px solid var(--border); background: var(--bg); color: var(--text); border-radius: .9rem; padding: .8rem .9rem; font: inherit; }
textarea { min-height: 8rem; resize: vertical; }
input:focus, textarea:focus, select:focus, button:focus, a:focus { outline: 3px solid var(--focus); outline-offset: 2px; }
.btn.primary { background: var(--brand); color: var(--bg); }
.btn.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
.btn.ghost { background: transparent; color: var(--brand); border: 1px solid var(--border); }
.btn.danger, .danger { background: var(--danger); color: var(--bg); }
.btn.small { padding: .45rem .65rem; font-size: .85rem; margin: .1rem; }
.hero-actions, .section-head, .inline-search, .filters, .audio-controls, .cta-strip { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.section-head { justify-content: space-between; margin-bottom: 1rem; }
.inline-search { margin: 1rem 0; }
.inline-search input { max-width: 30rem; }
.kpi-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: .85rem; margin-bottom: 1.1rem; }
.kpi, .result-card { background: var(--panel); border: 1px solid var(--border); border-radius: 1.15rem; padding: 1rem; box-shadow: var(--shadow); }
.kpi span, .result-card span { color: var(--muted); display: block; font-weight: 800; }
.kpi strong, .result-card strong { display: block; font-size: clamp(1.25rem, 2vw, 2rem); margin: .35rem 0; }
.kpi small, .smallprint { color: var(--muted); }
.grid.two { display: grid; grid-template-columns: 1.3fr .8fr; gap: 1rem; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 1rem; }
table { width: 100%; border-collapse: collapse; min-width: 780px; }
th, td { padding: .78rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { background: var(--panel-2); color: var(--text); position: sticky; top: 0; }
tr:hover td { background: color-mix(in srgb, var(--panel-2) 55%, transparent); }
.notice, .alert, .success { border-radius: .9rem; padding: .85rem; font-weight: 700; }
.notice { background: var(--panel-2); border: 1px solid var(--border); }
.alert { background: color-mix(in srgb, var(--danger) 14%, var(--panel)); border: 1px solid var(--danger); }
.success { background: color-mix(in srgb, var(--success) 14%, var(--panel)); border: 1px solid var(--success); }
.case-grid, .feature-grid, .content-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.case-card, .feature-card, .content-grid article { border: 1px solid var(--border); background: var(--panel); border-radius: 1.1rem; padding: 1rem; box-shadow: var(--shadow); }
.feature-emoji { font-size: 2rem; width: 3.2rem; height: 3.2rem; display: grid; place-items: center; background: var(--panel-2); border-radius: 1rem; }
.tag, .status { display: inline-flex; border-radius: 999px; padding: .28rem .55rem; background: var(--accent); color: #101010; font-weight: 900; font-size: .78rem; }
.meta { display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0; color: var(--muted); }
.meta span { border: 1px solid var(--border); padding: .3rem .55rem; border-radius: 999px; }
.meta.big span { font-weight: 800; }
.calc-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; align-items: end; }
.guide-text { font-size: 1.05rem; line-height: 1.75; background: var(--panel-2); border-radius: 1rem; padding: 1rem; border: 1px solid var(--border); }
.footer { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; padding: 1.2rem; color: var(--muted); border-top: 1px solid var(--border); margin-top: 2rem; }
pre { white-space: pre-wrap; overflow-x: auto; background: var(--panel-2); padding: 1rem; border-radius: 1rem; }
@media (max-width: 1100px) {
  .sidebar { position: static; width: auto; display: flex; overflow-x: auto; gap: .4rem; padding: .65rem; border-right: 0; border-bottom: 1px solid var(--border); }
  .main.with-nav { margin-left: 0; }
  .nav-link span { white-space: nowrap; }
  .kpi-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .case-grid, .feature-grid, .content-grid, .grid.two { grid-template-columns: 1fr; }
  .hero-panel, .auth-card { flex-direction: column; align-items: stretch; }
  .purchase-hero { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .kpi-grid, .calc-grid { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .theme-toggle { width: 100%; }
}