/* Humming Lift — elevator systems
   Pure CSS, zero external requests, zero runtime dependencies.
   Dark industrial palette: deep navy + champagne gold. */

:root {
  --bg: #0b1220;
  --bg-2: #101b2d;
  --panel: #14223a;
  --panel-2: #182a46;
  --line: rgba(255, 255, 255, .10);
  --line-strong: rgba(217, 185, 106, .38);
  --txt: #eef3f9;
  --muted: #a2b3c9;
  --dim: #7d90a9;
  --gold: #d9b96a;
  --gold-bright: #f0d89b;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--gold-bright); text-decoration: none; }
a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }
img, svg { max-width: 100%; }
h1, h2, h3, h4 { line-height: 1.22; letter-spacing: -.025em; font-weight: 620; margin: 0 0 .6em; }
h1 { font-size: clamp(2.1rem, 4.8vw, 3.9rem); }
h2 { font-size: clamp(1.55rem, 2.7vw, 2.25rem); }
h3 { font-size: 1.12rem; letter-spacing: -.01em; }
p { margin: 0 0 1.1em; }
ul, ol { padding-left: 1.25em; }
strong { color: #fff; font-weight: 640; }
em { color: var(--gold-bright); font-style: normal; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }

.wrap { width: min(var(--wrap), calc(100% - 48px)); margin-inline: auto; }
.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 {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--gold); color: #0b1220; padding: 10px 16px; font-weight: 700;
}
.skip:focus { left: 12px; top: 12px; }

.eyebrow {
  text-transform: uppercase; letter-spacing: .20em; font-size: .72rem;
  font-weight: 700; color: var(--gold); margin: 0 0 .9rem;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .78rem 1.5rem; border: 1px solid transparent; border-radius: 2px;
  font-size: .88rem; font-weight: 650; letter-spacing: .02em;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-gold { background: var(--gold); color: #0a1120; }
.btn-gold:hover { background: var(--gold-bright); color: #0a1120; }
.btn-ghost { border-color: var(--line-strong); color: var(--txt); background: transparent; }
.btn-ghost:hover { border-color: var(--gold); color: var(--gold-bright); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(11, 18, 32, .92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 22px; min-height: 76px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--txt); flex-shrink: 0; }
.brand:hover { text-decoration: none; color: var(--txt); }
.brand-mark { color: var(--gold); display: inline-flex; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: .95rem; letter-spacing: .13em; font-weight: 750; color: #fff; }
.brand-text small { font-size: .58rem; letter-spacing: .26em; color: var(--dim); margin-top: 4px; }
.main-nav { margin-left: auto; }
.main-nav ul { display: flex; align-items: center; gap: 26px; list-style: none; margin: 0; padding: 0; }
.main-nav a {
  color: var(--muted); font-size: .86rem; font-weight: 560; letter-spacing: .01em;
  padding: 6px 0; border-bottom: 1px solid transparent;
}
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--gold-bright); border-bottom-color: var(--gold); text-decoration: none; }
.header-cta { padding: .62rem 1.1rem; font-size: .82rem; }
.navtoggle, .navtoggle-label { display: none; }

/* ---------- hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 460px at 78% 8%, rgba(217, 185, 106, .13), transparent 65%),
    radial-gradient(700px 480px at 8% 100%, rgba(48, 86, 140, .22), transparent 70%),
    linear-gradient(180deg, var(--bg-2), var(--bg));
  border-bottom: 1px solid var(--line);
}
.hero-inner { position: relative; z-index: 2; padding: 78px 0 76px; max-width: 820px; }
.hero-home .hero-inner { padding: 116px 0 104px; }
.hero h1 { max-width: 15ch; margin-bottom: 1.1rem; }
.hero-intro { font-size: clamp(1rem, 1.5vw, 1.18rem); color: var(--muted); max-width: 68ch; margin-bottom: 0; }
.hero-art { position: absolute; right: 2%; top: -40px; height: 108%; width: min(42%, 560px); opacity: .85; pointer-events: none; }
.hero-art svg { height: 100%; width: 100%; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2.2rem; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 10px 26px; margin-top: 3.2rem; padding-top: 22px; border-top: 1px solid var(--line); }
.hero-trust span { font-size: .76rem; letter-spacing: .1em; text-transform: uppercase; color: var(--dim); }
.hero-trust span::before { content: ""; display: inline-block; width: 5px; height: 5px; background: var(--gold); margin-right: 10px; vertical-align: 2px; transform: rotate(45deg); }

/* ---------- breadcrumbs ---------- */
.breadcrumbs { padding-top: 20px; font-size: .78rem; color: var(--dim); }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; }
.breadcrumbs li + li::before { content: "/"; margin-right: 8px; color: rgba(255, 255, 255, .22); }
.breadcrumbs a { color: var(--muted); }
.crumb-current { color: var(--dim); }

/* ---------- key facts ---------- */
.facts {
  width: min(var(--wrap), calc(100% - 48px)); margin: 56px auto 0;
  display: grid; grid-template-columns: minmax(220px, .72fr) 1.4fr; gap: 34px;
  background: linear-gradient(135deg, var(--panel), rgba(20, 34, 58, .45));
  border: 1px solid var(--line); border-left: 2px solid var(--gold);
  padding: 30px 34px;
}
.facts-head h2 { font-size: 1.5rem; }
.facts-note { color: var(--dim); font-size: .84rem; margin: 0; }
.facts-table, .data-table { width: 100%; border-collapse: collapse; font-size: .89rem; }
.facts-table th, .facts-table td { padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: top; text-align: left; }
.facts-table tr:last-child th, .facts-table tr:last-child td { border-bottom: 0; }
.facts-table th { color: var(--dim); font-weight: 560; width: 40%; white-space: nowrap; }
.facts-table td { color: var(--txt); }

/* ---------- article body ---------- */
.article-body { padding-top: 20px; padding-bottom: 30px; }
.block { padding: 42px 0; border-bottom: 1px solid var(--line); }
.block:last-child { border-bottom: 0; }
.block > p { color: var(--muted); max-width: 78ch; }
.block h2 { margin-bottom: 1rem; }
.block a { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--line-strong); }
.block a:hover { text-decoration-color: var(--gold); }

.data-table { margin: 1.5rem 0 1.8rem; border: 1px solid var(--line); }
.data-table caption { text-align: left; }
.data-table thead { background: rgba(217, 185, 106, .07); }
.data-table th, .data-table td { padding: 12px 15px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; color: var(--muted); font-weight: 460; }
.data-table thead th { color: var(--gold-bright); font-weight: 650; font-size: .8rem; letter-spacing: .04em; text-transform: uppercase; }
.data-table tbody th[scope="row"] { color: var(--txt); font-weight: 600; }
.data-table tbody tr:last-child th, .data-table tbody tr:last-child td { border-bottom: 0; }
.data-table tbody tr:hover { background: rgba(255, 255, 255, .025); }

.tick-list { list-style: none; padding: 0; margin: 1.3rem 0; max-width: 82ch; }
.tick-list li { position: relative; padding: 7px 0 7px 26px; color: var(--muted); }
.tick-list li::before { content: ""; position: absolute; left: 2px; top: 17px; width: 8px; height: 8px; border: 1px solid var(--gold); transform: rotate(45deg); }
.step-list { list-style: none; counter-reset: step; padding: 0; margin: 1.4rem 0; max-width: 82ch; }
.step-list li { counter-increment: step; position: relative; padding: 12px 0 12px 48px; border-bottom: 1px solid var(--line); color: var(--muted); }
.step-list li::before {
  content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 12px;
  color: var(--gold); font-size: .8rem; font-weight: 700; letter-spacing: .08em;
}
.step-list li:last-child { border-bottom: 0; }
.step-list strong { color: var(--txt); }
.callout {
  background: rgba(217, 185, 106, .06); border-left: 2px solid var(--gold);
  padding: 16px 20px; font-size: .9rem; color: var(--muted); margin: 1.5rem 0 0;
}

/* ---------- cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 1.8rem 0; }
.card {
  display: flex; flex-direction: column; position: relative;
  background: linear-gradient(160deg, var(--panel), rgba(16, 27, 45, .7));
  border: 1px solid var(--line); padding: 24px 22px 22px; color: var(--txt);
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
a.card:hover { border-color: var(--line-strong); transform: translateY(-3px); text-decoration: none; color: var(--txt); background: linear-gradient(160deg, var(--panel-2), rgba(16, 27, 45, .8)); }
.card-num { font-size: .7rem; letter-spacing: .2em; color: var(--gold); margin-bottom: 18px; }
.card h3 { margin-bottom: .55em; color: #fff; }
.card p { font-size: .88rem; color: var(--muted); margin: 0 0 1.2em; }
.card-link { margin-top: auto; font-size: .8rem; color: var(--gold); letter-spacing: .03em; }
.card-static { cursor: default; }
.card-static p:last-child { margin-bottom: 0; }

/* ---------- FAQ ---------- */
.section { padding: 68px 0; border-top: 1px solid var(--line); }
.section h2 { margin-bottom: 1.8rem; }
.faq-section { background: var(--bg-2); }
.faq-list { max-width: 900px; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-child { border-top: 1px solid var(--line); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 19px 4px; cursor: pointer; list-style: none; font-weight: 600; color: var(--txt);
  font-size: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--gold-bright); }
.faq-plus { position: relative; width: 16px; height: 16px; flex-shrink: 0; }
.faq-plus::before, .faq-plus::after {
  content: ""; position: absolute; background: var(--gold); transition: transform .2s ease;
}
.faq-plus::before { left: 0; top: 7px; width: 16px; height: 1.5px; }
.faq-plus::after { left: 7px; top: 0; width: 1.5px; height: 16px; }
.faq-item[open] .faq-plus::after { transform: rotate(90deg); }
.faq-answer { padding: 0 4px 22px; color: var(--muted); max-width: 82ch; font-size: .94rem; }
.faq-answer p { margin: 0 0 .7em; }

/* ---------- related ---------- */
.related { background: var(--bg); }
.mini-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; }
.mini-card {
  display: flex; align-items: center; gap: 12px; padding: 16px 18px;
  border: 1px solid var(--line); color: var(--muted); font-size: .9rem;
  transition: border-color .2s ease, color .2s ease;
}
.mini-card:hover { border-color: var(--line-strong); color: var(--txt); text-decoration: none; }
.mini-arrow { color: var(--gold); font-size: 1.05rem; }

/* ---------- CTA ---------- */
.cta-band {
  background: linear-gradient(120deg, #172844, #0e192b 60%, #1a2c4a);
  border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line);
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 56px 0; }
.cta-inner h2 { font-size: clamp(1.4rem, 2.4vw, 2rem); max-width: 22ch; }
.cta-inner p { color: var(--muted); max-width: 58ch; margin: 0; font-size: .94rem; }
.cta-actions { display: flex; flex-direction: column; gap: 10px; flex-shrink: 0; min-width: 210px; }

/* ---------- footer ---------- */
.site-footer { background: #080e19; border-top: 1px solid var(--line); padding: 56px 0 28px; }
.footer-top { display: grid; grid-template-columns: 1.5fr repeat(4, 1fr); gap: 34px; }
.fcol h3 { font-size: .76rem; letter-spacing: .16em; text-transform: uppercase; color: var(--gold); margin-bottom: 1.1rem; }
.fcol ul { list-style: none; padding: 0; margin: 0; }
.fcol li { margin-bottom: 9px; }
.fcol a { color: var(--muted); font-size: .85rem; }
.fcol a:hover { color: var(--gold-bright); }
.fcol-brand .brand-text { margin-bottom: 1rem; }
.foot-desc, .foot-addr { font-size: .83rem; color: var(--dim); max-width: 34ch; }
.footer-bottom {
  display: flex; flex-wrap: wrap; gap: 10px 30px; align-items: center;
  margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line);
  font-size: .76rem; color: var(--dim);
}
.footer-bottom p { margin: 0; }
.foot-fine { max-width: 62ch; }
.foot-links { margin-left: auto; }
.foot-links a { color: var(--dim); }

/* ---------- 404 ---------- */
.error-page { padding: 120px 0 140px; }
.error-page h1 { max-width: 20ch; }
.error-page p { color: var(--muted); max-width: 60ch; }

/* ---------- responsive ---------- */
@media (max-width: 1020px) {
  .main-nav ul { gap: 16px; }
  .header-cta { display: none; }
  .footer-top { grid-template-columns: 1.4fr repeat(2, 1fr); }
}
@media (max-width: 820px) {
  .header-inner { min-height: 66px; flex-wrap: wrap; }
  .navtoggle-label {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    margin-left: auto; width: 34px; height: 34px; cursor: pointer; order: 3;
  }
  .navtoggle-label span { display: block; height: 1.5px; width: 24px; background: var(--txt); }
  .navtoggle { position: absolute; opacity: 0; pointer-events: none; }
  .main-nav { order: 4; flex-basis: 100%; margin-left: 0; display: none; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 8px 0 14px; }
  .main-nav li { border-bottom: 1px solid var(--line); }
  .main-nav a { display: block; padding: 12px 0; font-size: .95rem; }
  .navtoggle:checked ~ .main-nav { display: block; }
  .hero-art { opacity: .32; right: -10%; }
  .hero-home .hero-inner { padding: 78px 0 70px; }
  .hero-inner { padding: 58px 0 56px; }
  .facts { grid-template-columns: 1fr; gap: 20px; padding: 26px 22px; }
  .cta-inner { flex-direction: column; align-items: flex-start; gap: 26px; }
  .cta-actions { flex-direction: row; flex-wrap: wrap; min-width: 0; }
  .footer-top { grid-template-columns: repeat(2, 1fr); }
  .fcol-brand { grid-column: 1 / -1; }
  .foot-links { margin-left: 0; }
  .data-table { display: block; overflow-x: auto; }
  .data-table th, .data-table td { min-width: 130px; }
}
@media (max-width: 520px) {
  .wrap, .facts { width: min(100% - 32px, var(--wrap)); }
  .hero-trust { gap: 8px 16px; }
  .hero-trust span { font-size: .68rem; }
  .block { padding: 34px 0; }
  .section { padding: 52px 0; }
  .footer-top { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
}

@media print {
  .site-header, .cta-band, .site-footer, .hero-art, .related, .navtoggle-label { display: none !important; }
  body { background: #fff; color: #000; }
  .block > p, .block li, .data-table th, .data-table td, .faq-answer { color: #222; }
}