:root {
  --ink: #081118;
  --surface: #0d1a23;
  --surface-2: #132633;
  --surface-3: #1b3442;
  --paper: #f3f0e9;
  --text: #edf4f4;
  --muted: #a8bbc0;
  --copper: #d58c52;
  --copper-light: #f0bb83;
  --cyan: #55c4c8;
  --line: rgba(218, 237, 238, .14);
  --shadow: 0 24px 70px rgba(0, 0, 0, .28);
  --radius: 18px;
  --max: 1180px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-color: rgba(213, 140, 82, .6); text-underline-offset: .22em; }
a:hover { color: var(--copper-light); }
button, input, textarea { font: inherit; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 3px; }
.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; padding: .7rem 1rem; background: var(--paper); color: var(--ink); }
.skip-link:focus { top: 1rem; }
.container { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
.narrow { width: min(100%, 760px); }
.section { padding: clamp(4rem, 8vw, 7rem) 0; }
.section-tight { padding: 3rem 0; }
.surface { background: var(--surface); }
.eyebrow { margin: 0 0 .7rem; color: var(--copper-light); font-size: .78rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3 { margin: 0 0 .8rem; font-family: Georgia, "Times New Roman", serif; line-height: 1.08; letter-spacing: -.025em; }
h1 { max-width: 900px; font-size: clamp(2.75rem, 7vw, 5.9rem); }
h2 { font-size: clamp(2rem, 4vw, 3.6rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.7rem); }
p { margin: 0 0 1rem; }
.lede { max-width: 760px; color: #c8d8da; font-size: clamp(1.08rem, 2vw, 1.35rem); }
.muted { color: var(--muted); }
.accent { color: var(--copper-light); }
.header { position: sticky; top: 0; z-index: 40; border-bottom: 1px solid var(--line); background: rgba(8, 17, 24, .9); backdrop-filter: blur(15px); }
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; font-size: 1rem; font-weight: 850; letter-spacing: .05em; text-decoration: none; }
.brand img { width: 34px; }
.nav-menu { display: flex; align-items: center; gap: 1.5rem; }
.nav-menu > a { color: #c6d6d9; font-size: .92rem; font-weight: 650; text-decoration: none; }
.nav-menu > a:hover, .nav-menu > a[aria-current="page"] { color: #fff; }
.nav-toggle { display: none; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); color: var(--text); padding: .6rem .75rem; }
.button { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; gap: .5rem; border: 1px solid var(--copper); border-radius: 999px; padding: .72rem 1.15rem; background: var(--copper); color: #111b20; font-size: .9rem; font-weight: 850; text-decoration: none; }
.button:hover { background: var(--copper-light); color: #111b20; }
.button-ghost { background: transparent; color: var(--text); }
.button-small { min-height: 40px; padding: .55rem .9rem; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.8rem; }
.hero { position: relative; min-height: 690px; display: grid; align-items: center; padding: clamp(5rem, 10vw, 8rem) 0; isolation: isolate; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -2; background: radial-gradient(circle at 80% 30%, rgba(85, 196, 200, .18), transparent 27%), linear-gradient(145deg, #081118 15%, #102734 68%, #081118); }
.hero-grid { display: grid; grid-template-columns: 1.25fr .75fr; align-items: center; gap: 3rem; }
.hero-art { position: relative; padding: 2rem; }
.hero-art::before { content: ""; position: absolute; inset: 11% 3%; z-index: -1; border: 1px solid rgba(85, 196, 200, .28); border-radius: 50%; filter: drop-shadow(0 0 35px rgba(85, 196, 200, .17)); }
.metric-row, .trust-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-block: 1px solid var(--line); }
.metric { padding: 1.45rem; border-left: 1px solid var(--line); }
.metric:first-child { border-left: 0; }
.metric strong { display: block; color: var(--copper-light); font-size: 1.1rem; }
.grid-2, .grid-3, .grid-4 { display: grid; gap: 1.15rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card { position: relative; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(155deg, rgba(27, 52, 66, .75), rgba(13, 26, 35, .9)); padding: clamp(1.3rem, 3vw, 2rem); box-shadow: 0 1px 0 rgba(255,255,255,.04) inset; }
.card img { width: 100%; height: 230px; object-fit: contain; margin-bottom: 1.2rem; }
.card-link { display: inline-flex; margin-top: .6rem; color: var(--copper-light); font-weight: 800; }
.tag { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: .3rem .65rem; color: var(--muted); font-size: .75rem; font-weight: 750; text-transform: uppercase; letter-spacing: .08em; }
.steps { counter-reset: step; }
.step { position: relative; padding-left: 4rem; }
.step::before { counter-increment: step; content: "0" counter(step); position: absolute; left: 0; top: -.2rem; color: var(--copper-light); font-family: Georgia, serif; font-size: 1.7rem; }
.band { border-block: 1px solid var(--line); background: linear-gradient(90deg, rgba(213, 140, 82, .14), rgba(85, 196, 200, .09)); }
.band-inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding-block: 2.4rem; }
.page-hero { padding: clamp(5rem, 10vw, 8rem) 0 4rem; background: radial-gradient(circle at 78% 15%, rgba(85, 196, 200, .13), transparent 25%); }
.breadcrumbs { margin-bottom: 1.4rem; color: var(--muted); font-size: .86rem; }
.breadcrumbs a { text-decoration: none; }
.specs { width: 100%; border-collapse: collapse; margin-top: 1.5rem; }
.specs th, .specs td { border-bottom: 1px solid var(--line); padding: 1rem; text-align: left; vertical-align: top; }
.specs th { color: var(--copper-light); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }
.check-list { padding: 0; list-style: none; }
.check-list li { position: relative; padding: .45rem 0 .45rem 1.7rem; }
.check-list li::before { content: "◇"; position: absolute; left: 0; color: var(--cyan); }
.notice { border-left: 3px solid var(--copper); background: rgba(213, 140, 82, .1); padding: 1.15rem 1.3rem; }
.faq details { border-top: 1px solid var(--line); padding: 1.2rem 0; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-size: 1.1rem; font-weight: 800; }
.faq details p { margin: .8rem 0 0; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { display: grid; gap: .35rem; }
.field-full { grid-column: 1 / -1; }
label { color: #dbe6e7; font-size: .86rem; font-weight: 750; }
input, textarea { width: 100%; border: 1px solid #31505c; border-radius: 10px; background: #09141b; color: #fff; padding: .8rem .9rem; }
textarea { min-height: 150px; resize: vertical; }
button:disabled { opacity: .65; cursor: wait; }
.form-status { min-height: 1.5rem; margin-top: .75rem; color: var(--copper-light); }
.article-layout { display: grid; grid-template-columns: minmax(0, 2.2fr) minmax(240px, .8fr); gap: 3rem; align-items: start; }
.article-body h2 { margin-top: 2.4rem; font-size: clamp(1.7rem, 3vw, 2.5rem); }
.article-body h3 { margin-top: 1.8rem; }
.article-body li { margin-bottom: .5rem; }
.toc { position: sticky; top: 105px; }
.toc a { display: block; padding: .4rem 0; color: var(--muted); text-decoration: none; }
.footer { border-top: 1px solid var(--line); padding: 4rem 0 2rem; background: #060d12; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 2rem; }
.footer h2, .footer h3 { font-family: inherit; font-size: .85rem; letter-spacing: .09em; text-transform: uppercase; }
.footer a { display: block; margin: .48rem 0; color: var(--muted); text-decoration: none; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; margin-top: 3rem; border-top: 1px solid var(--line); padding-top: 1.5rem; color: #758d94; font-size: .82rem; }
.hp-field { position: absolute !important; left: -9999px !important; }

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .nav-menu { display: none; position: absolute; left: 1rem; right: 1rem; top: 68px; flex-direction: column; align-items: stretch; border: 1px solid var(--line); border-radius: 14px; background: #0d1a23; padding: 1rem; box-shadow: var(--shadow); }
  .nav-menu[data-open] { display: flex; }
  .hero-grid, .article-layout { grid-template-columns: 1fr; }
  .hero-art { max-width: 480px; margin-inline: auto; }
  .grid-4, .metric-row, .trust-strip { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .toc { position: static; }
}

@media (max-width: 620px) {
  .grid-2, .grid-3, .grid-4, .form-grid, .metric-row, .trust-strip { grid-template-columns: 1fr; }
  .metric { border-left: 0; border-top: 1px solid var(--line); }
  .metric:first-child { border-top: 0; }
  .band-inner, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
  .field-full { grid-column: auto; }
  .specs { display: block; overflow-x: auto; }
}

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

@media print {
  .header, .footer, .actions, .nav-toggle { display: none; }
  body { background: #fff; color: #111; }
  .card { border-color: #bbb; background: #fff; box-shadow: none; }
}