:root {
  color-scheme: dark;
  --background: #0d1013;
  --background-deep: #090b0e;
  --panel: #15191d;
  --panel-raised: #1b2025;
  --line: #30363c;
  --line-soft: #23292f;
  --text: #e7e9eb;
  --muted: #a6abb1;
  --subtle: #747a82;
  --purple: #9a4de2;
  --purple-bright: #b45bf0;
  --purple-deep: #64238e;
  --max: 1440px;
  --radius: 10px;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: radial-gradient(circle at 72% 10%, rgba(120, 45, 173, .09), transparent 30%), var(--background); color: var(--text); line-height: 1.55; }
img { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; top: 8px; left: 8px; transform: translateY(-150%); background: #fff; color: #111; padding: 8px 12px; border-radius: 4px; }
.skip-link:focus { transform: none; }
.section-shell { width: min(calc(100% - 64px), var(--max)); margin-inline: auto; }

.site-header { position: sticky; z-index: 40; top: 0; border-bottom: 1px solid var(--line-soft); background: rgba(11, 14, 17, .94); backdrop-filter: blur(16px); }
.header-inner { width: min(calc(100% - 64px), var(--max)); min-height: 78px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 0; text-decoration: none; letter-spacing: .03em; font-weight: 700; font-size: 1.2rem; white-space: nowrap; }
.brand img { width: 42px; height: 42px; object-fit: contain; margin-right: 12px; }
.brand-star { color: var(--purple-bright); }
.brand-mentor { color: #999da3; font-weight: 400; }
.primary-nav { display: flex; align-items: stretch; align-self: stretch; gap: 6px; }
.nav-link { position: relative; display: flex; align-items: center; gap: 6px; padding: 0 23px; border: 0; background: none; color: var(--muted); text-decoration: none; text-transform: uppercase; letter-spacing: .055em; font: 600 .88rem/1 inherit; cursor: pointer; }
.nav-link:hover, .nav-link:focus-visible, .nav-link.active { color: var(--text); }
.nav-link.active::after { content: ""; position: absolute; left: 20px; right: 20px; bottom: 0; height: 3px; background: var(--purple); }
.product-menu { position: relative; display: flex; }
.product-dropdown { position: absolute; top: calc(100% - 8px); right: 0; width: 260px; padding: 8px; border: 1px solid var(--line); border-radius: 8px; background: #14181c; box-shadow: 0 18px 50px rgba(0,0,0,.42); visibility: hidden; opacity: 0; transform: translateY(-5px); transition: .16s ease; }
.product-menu.open .product-dropdown { visibility: visible; opacity: 1; transform: none; }
.product-dropdown a, .coming-soon { display: flex; flex-direction: column; gap: 1px; padding: 12px; border-radius: 5px; text-decoration: none; }
.product-dropdown a:hover { background: var(--panel-raised); }
.product-dropdown span { color: var(--subtle); font-size: .79rem; }
.coming-soon { border-top: 1px solid var(--line-soft); color: var(--subtle); }
.menu-toggle { display: none; width: 44px; height: 40px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel); padding: 10px; }
.menu-toggle > span:not(.sr-only) { display: block; height: 2px; margin: 4px 0; background: var(--text); }

.hero { display: grid; grid-template-columns: minmax(360px, .88fr) minmax(520px, 1.12fr); align-items: center; gap: clamp(48px, 6vw, 100px); padding-block: clamp(72px, 8vw, 126px) 74px; }
.eyebrow { margin: 0 0 18px; color: var(--purple-bright); font-size: .78rem; letter-spacing: .14em; font-weight: 700; }
.hero h1 { margin: 0; font-size: clamp(3.7rem, 7vw, 7.2rem); font-weight: 650; letter-spacing: -.055em; line-height: .94; }
.hero h1 span:first-child { color: #f2f2ef; }
.hero h1 span:last-child { color: var(--purple); font-weight: 300; }
.hero-tagline { margin: 27px 0 20px; font-size: clamp(1.3rem, 2vw, 1.85rem); font-weight: 620; color: #cbd0d5; }
.hero-description { max-width: 620px; margin: 0; color: var(--muted); font-size: 1.05rem; }
.hero-actions { display: flex; gap: 14px; margin-top: 34px; }
.primary-button { display: inline-flex; align-items: center; min-height: 52px; padding: 0 24px; border: 1px solid #b456e8; border-radius: 5px; background: linear-gradient(180deg, #a433d3, #721caa); box-shadow: 0 8px 24px rgba(111, 26, 157, .22); text-decoration: none; font-weight: 650; }
.primary-button:hover, .primary-button:focus-visible { background: linear-gradient(180deg, #b742e6, #8322bc); }
.primary-button[data-unavailable="true"] { cursor: not-allowed; filter: saturate(.58); }
.primary-button[data-unavailable="true"]:hover, .primary-button[data-unavailable="true"]:focus-visible { background: linear-gradient(180deg, #a433d3, #721caa); filter: saturate(.58); }
.compatibility { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 32px; }
.compatibility span { padding: 9px 13px; border: 1px solid var(--line); border-radius: 4px; background: rgba(19, 23, 27, .75); color: #bcc1c7; font-size: .86rem; }
.product-visual { margin: 0; padding: 17px; border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(145deg, #171b20, #0a0d10); box-shadow: 0 38px 75px rgba(0,0,0,.35); }
.product-visual img { width: 100%; border-radius: 4px; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding-block: 34px 78px; border-top: 1px solid var(--line-soft); }
.feature-card { min-height: 164px; display: flex; align-items: flex-start; gap: 24px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, var(--panel), #101418); }
.feature-card svg { flex: 0 0 48px; width: 48px; stroke: var(--purple); stroke-width: 2.5; fill: none; }
.feature-card h2 { margin: 0 0 6px; font-size: 1.03rem; }
.feature-card p { margin: 0; color: var(--muted); font-size: .93rem; }
.availability { margin-bottom: 82px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; align-items: center; padding: 32px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.availability .eyebrow { margin-bottom: 7px; }
.availability h2 { margin: 0; font-size: 1.45rem; }
.availability > p { margin: 0; color: var(--muted); }

.page-hero { padding-block: 72px 34px; }
.page-hero h1 { margin: 0; font-size: clamp(2.7rem, 5vw, 4.6rem); line-height: 1; }
.page-hero p:last-child { max-width: 700px; margin: 22px 0 0; color: var(--muted); font-size: 1.05rem; }
.document-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; padding-bottom: 84px; }
.document-card { display: flex; flex-direction: column; min-height: 224px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.document-card h2 { margin: 0 0 8px; font-size: 1.2rem; }
.document-card p { margin: 0 0 24px; color: var(--muted); }
.document-card .doc-link { align-self: flex-start; margin-top: auto; color: #d8b9ee; text-underline-offset: 4px; }
.content-panel { max-width: 940px; margin: 0 auto 84px; padding: 36px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.content-panel h2 { margin-top: 32px; }
.content-panel h2:first-child { margin-top: 0; }
.content-panel p, .content-panel li { color: var(--muted); }
.content-panel a { color: #d8b9ee; text-underline-offset: 4px; }
.support-address { display: inline-block; margin: 12px 0; font-size: 1.35rem; }

.site-footer { border-top: 1px solid var(--line-soft); background: var(--background-deep); }
.footer-links { display: grid; grid-template-columns: repeat(4, 1fr); border-inline: 1px solid var(--line-soft); }
.footer-links a { padding: 25px 18px; border-right: 1px solid var(--line-soft); color: #b9bec4; text-align: center; text-decoration: none; }
.footer-links a:last-child { border-right: 0; }
.footer-links a:hover { color: var(--text); background: rgba(255,255,255,.018); }
.footer-meta { display: flex; justify-content: space-between; padding-block: 20px; color: var(--subtle); font-size: .8rem; }

:focus-visible { outline: 2px solid var(--purple-bright); outline-offset: 3px; }

@media (max-width: 1040px) {
  .hero { grid-template-columns: 1fr; gap: 48px; padding-top: 70px; }
  .hero-copy { max-width: 750px; }
  .product-visual { max-width: 820px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .availability { grid-template-columns: 1fr; gap: 16px; }
}

@media (max-width: 720px) {
  .section-shell, .header-inner { width: min(calc(100% - 32px), var(--max)); }
  .header-inner { min-height: 68px; }
  .brand { font-size: 1.02rem; }
  .brand img { width: 36px; height: 36px; margin-right: 9px; }
  .menu-toggle { display: block; }
  .primary-nav { position: absolute; top: 100%; left: 0; right: 0; display: none; padding: 10px 16px 18px; border-bottom: 1px solid var(--line); background: #0d1013; }
  .primary-nav.open { display: block; }
  .nav-link { width: 100%; min-height: 48px; padding: 0 12px; }
  .nav-link.active::after { left: 12px; right: 12px; height: 2px; }
  .product-menu { display: block; }
  .product-dropdown { position: static; display: none; width: 100%; visibility: visible; opacity: 1; transform: none; box-shadow: none; }
  .product-menu.open .product-dropdown { display: block; }
  .hero { grid-template-columns: minmax(0, 1fr); padding-block: 52px 42px; }
  .hero h1 { font-size: clamp(3.25rem, 18vw, 5.2rem); }
  .hero-tagline { margin-top: 22px; }
  .hero-description { font-size: 1rem; }
  .primary-button { width: 100%; justify-content: center; }
  .product-visual { padding: 8px; }
  .feature-grid { padding-bottom: 50px; }
  .feature-card { padding: 22px; gap: 18px; }
  .feature-card svg { flex-basis: 40px; width: 40px; }
  .availability { margin-bottom: 54px; padding: 24px; }
  .document-grid { grid-template-columns: 1fr; }
  .content-panel { width: min(calc(100% - 32px), 940px); padding: 24px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .footer-links a:nth-child(2) { border-right: 0; }
  .footer-links a:nth-child(-n+2) { border-bottom: 1px solid var(--line-soft); }
  .footer-meta { flex-direction: column; gap: 5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}