/* =========================================================================
   VNC Viewer — refreshed production styles
   Modern dark-tech hero, clean white content, blue/mint accent system.
   ========================================================================= */

:root {
  --blue: #2563eb;
  --blue-2: #1d4ed8;
  --cyan: #06b6d4;
  --mint: #22c55e;
  --ink: #07111f;
  --ink-2: #111827;
  --slate: #475569;
  --muted: #64748b;
  --line: #dbe5f2;
  --surface: #f6f9ff;
  --surface-2: #eef6ff;
  --white: #ffffff;

  --grad-brand: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
  --grad-deep: radial-gradient(circle at 18% 18%, rgba(6,182,212,.28), transparent 30%), radial-gradient(circle at 86% 8%, rgba(37,99,235,.38), transparent 32%), linear-gradient(135deg, #07111f 0%, #0b1f3d 55%, #102a49 100%);
  --grad-soft: linear-gradient(180deg, #f2f7ff 0%, #ffffff 75%);

  --shadow-sm: 0 1px 2px rgba(7,17,31,.05), 0 10px 30px -24px rgba(7,17,31,.30);
  --shadow-md: 0 18px 42px -24px rgba(37,99,235,.42);
  --shadow-lg: 0 28px 70px -34px rgba(7,17,31,.55);

  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;
  --r-xl: 32px;

  --font-head: "Poppins", "Inter", "Segoe UI", system-ui, sans-serif;
  --font-body: "Poppins", "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;

  --maxw: 1160px;
  --header-h: 74px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 18px); }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--blue); text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--cyan); }
h1, h2, h3, h4 { font-family: var(--font-head); color: var(--ink); line-height: 1.14; margin: 0 0 .55em; letter-spacing: -.025em; }
h1 { font-size: clamp(1.9rem, 4vw, 3.05rem); }
h2 { font-size: clamp(1.55rem, 3.1vw, 2.28rem); }
h3 { font-size: 1.18rem; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0 0 1rem; padding-left: 1.2rem; }
li { margin: .3rem 0; }
:focus-visible { outline: 3px solid rgba(6,182,212,.55); outline-offset: 3px; border-radius: 8px; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }
.section { padding: 76px 0; }
.section--tint { background: var(--surface); }
.section--soft { background: var(--grad-soft); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head); font-weight: 700; font-size: .74rem;
  letter-spacing: .13em; text-transform: uppercase; color: var(--blue-2);
  background: rgba(37,99,235,.09); padding: 7px 14px; border: 1px solid rgba(37,99,235,.12);
  border-radius: 999px; margin-bottom: 16px;
}
.eyebrow::before { content:""; width:8px; height:8px; border-radius:50%; background: var(--grad-brand); box-shadow: 0 0 0 5px rgba(6,182,212,.14); }
.section-head { max-width: 740px; margin-bottom: 40px; }
.section-head.center { margin-inline: auto; text-align: center; }
.lead { font-size: 1.06rem; color: var(--slate); }
.muted { color: var(--muted); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-head); font-weight: 700; font-size: .96rem;
  padding: 13px 22px; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; transition: transform .18s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--grad-brand); color: #fff; box-shadow: var(--shadow-md); }
.btn-primary:hover { color:#fff; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-cyan { background: linear-gradient(135deg, #22d3ee 0%, #22c55e 100%); color: #062033; box-shadow: 0 12px 28px -16px rgba(6,182,212,.65); }
.btn-cyan:hover { color:#062033; transform: translateY(-2px); }
.btn-ghost { background: rgba(255,255,255,.9); color: var(--blue-2); border-color: var(--line); box-shadow: var(--shadow-sm); }
.btn-ghost:hover { border-color: rgba(37,99,235,.35); color: var(--blue-2); transform: translateY(-2px); }
.btn-lg { padding: 16px 30px; font-size: 1.02rem; }
.btn-block { width: 100%; }

.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,.88); backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(219,229,242,.65); transition: box-shadow .25s, background .25s;
}
.site-header.scrolled { box-shadow: 0 14px 34px -30px rgba(7,17,31,.65); background: rgba(255,255,255,.95); }
.nav { display: flex; align-items: center; gap: 18px; min-height: var(--header-h); }
.brand { display: flex; align-items: center; flex: 0 0 auto; }
.brand img { height: 40px; width: auto; }
.nav-menu { display: flex; align-items: center; gap: 2px; margin-left: auto; list-style: none; padding: 0; }
.nav-menu a {
  font-family: var(--font-head); font-weight: 600; font-size: .88rem; color: var(--slate);
  padding: 9px 10px; border-radius: 999px; transition: background .18s, color .18s;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--blue-2); background: rgba(37,99,235,.09); }
.nav-menu a.nav-guide { color: #fff; background: var(--ink); padding-inline: 15px; box-shadow: var(--shadow-sm); }
.nav-menu a.nav-guide:hover { color: #fff; background: var(--blue-2); }
.nav-toggle {
  display: none; margin-left: auto; width: 44px; height: 44px; border: 1px solid var(--line);
  background: #fff; border-radius: 13px; cursor: pointer; align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px;
  position: relative; transition: transform .25s, opacity .2s;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

.hero { background: var(--grad-deep); padding: 58px 0 66px; overflow: hidden; color: #e5edf8; position: relative; }
.hero::before {
  content:""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 42px 42px; mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 34px; align-items: center; position: relative; }
.hero h1 { color: #fff; max-width: 640px; font-size: clamp(1.9rem, 3.6vw, 2.85rem); }
.hero .lead { color: #cfdbeb; max-width: 620px; font-size: 1rem; }
.hero .eyebrow { color: #dff9ff; background: rgba(255,255,255,.10); border-color: rgba(255,255,255,.14); }
.hero-badges { display: flex; flex-wrap: wrap; gap: 9px; margin: 16px 0 22px; }
.chip {
  display: inline-flex; align-items: center; gap: 7px; font-size: .82rem; font-weight: 700;
  color: #dbeafe; background: rgba(255,255,255,.10); border: 1px solid rgba(255,255,255,.14);
  padding: 8px 13px; border-radius: 999px; backdrop-filter: blur(10px);
}
.chip svg { width: 15px; height: 15px; color: var(--mint); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.hero-note { margin-top: 16px; font-size: .86rem; color: #9fb3cf; }
.hero-visual { max-width: 520px; margin-left: auto; }
.hero-visual img { width: 100%; height: auto; border-radius: 28px; filter: drop-shadow(0 26px 54px rgba(0,0,0,.30)); }

.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: rgba(255,255,255,.94); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 27px; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(37,99,235,.32); }
.card h3 { margin-bottom: .42rem; }
.card p { color: var(--slate); margin: 0; font-size: .95rem; }
.icon-badge {
  width: 48px; height: 48px; border-radius: 16px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(37,99,235,.12), rgba(6,182,212,.12)); color: var(--blue-2); margin-bottom: 16px;
}
.icon-badge.cyan { background: linear-gradient(135deg, rgba(6,182,212,.16), rgba(34,197,94,.16)); color: #047a8d; }
.icon-badge svg { width: 24px; height: 24px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media img { width: 100%; border-radius: var(--r-xl); box-shadow: var(--shadow-md); }
.tick-list { list-style: none; padding: 0; margin: 18px 0 0; }
.tick-list li { position: relative; padding-left: 32px; margin: 10px 0; color: var(--slate); }
.tick-list li::before { content: ""; position: absolute; left: 0; top: 4px; width: 20px; height: 20px; border-radius: 50%; background: var(--grad-brand); }
.tick-list li::after { content: ""; position: absolute; left: 6px; top: 10px; width: 7px; height: 4px; border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: rotate(-45deg); }

.steps { counter-reset: step; display: grid; gap: 20px; }
.steps.grid-4 { grid-template-columns: repeat(4,1fr); }
.step { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px 24px; position: relative; box-shadow: var(--shadow-sm); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--font-head); font-weight: 800; font-size: .94rem; color: #fff; background: var(--grad-brand); width: 44px; height: 44px; border-radius: 15px; display: grid; place-items: center; margin-bottom: 14px; }
.step h3 { font-size: 1.04rem; }
.step p { color: var(--slate); font-size: .93rem; margin: 0; }

.download { background: linear-gradient(135deg, #3b0764 0%, #7c2d12 58%, #111827 100%); color: #fff; border-radius: 34px; padding: 44px; box-shadow: 0 34px 80px -34px rgba(124,45,18,.60); position: relative; overflow: hidden; border: 1px solid rgba(255,255,255,.13); }
.download::before { content:""; position:absolute; inset:0; background: radial-gradient(circle at 15% 18%, rgba(251,191,36,.28), transparent 28%), radial-gradient(circle at 88% 0%, rgba(168,85,247,.30), transparent 30%); pointer-events:none; }
.download::after { content:""; position:absolute; width: 310px; height: 310px; border-radius:50%; right:-90px; bottom:-130px; background: rgba(251,146,60,.24); filter: blur(2px); }
.download-grid { display: grid; grid-template-columns: 1.04fr .96fr; gap: 36px; align-items: center; position: relative; z-index: 1; }
.download h2, .download h3 { color: #fff; }
.download h2 { font-size: clamp(1.55rem, 2.7vw, 2.1rem); }
.download .eyebrow { color: #fff7ed; background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.18); }
.download p { color: #ffedd5; }
.download-facts { list-style: none; padding: 0; margin: 20px 0 0; display: grid; gap: 10px; }
.download-facts li { display: flex; gap: 11px; align-items: flex-start; color: #fff7ed; font-size: .92rem; }
.download-facts svg { width: 18px; height: 18px; color: #fbbf24; flex: none; margin-top: 3px; }
.download-card { background: rgba(255,255,255,.98); color: var(--ink); border-radius: 28px; padding: 24px; text-align: center; box-shadow: 0 28px 70px -36px rgba(0,0,0,.70); border: 1px solid rgba(251,191,36,.26); }
.download-card img { width: 66%; max-width: 340px; margin: 0 auto 14px; }
.download-card .btn { margin-top: 8px; background: linear-gradient(135deg, #f97316 0%, #7c3aed 100%); }
.download-card .btn:hover { box-shadow: 0 28px 70px -34px rgba(124,58,237,.62); }
.download-meta { margin-top: 12px; font-size: .8rem; color: var(--muted); }

.callout { display: flex; gap: 18px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-left: 6px solid var(--cyan); border-radius: var(--r-lg); padding: 25px; box-shadow: var(--shadow-sm); }
.callout .icon-badge { flex: none; margin: 0; background: rgba(6,182,212,.13); color: #0e7490; }
.callout h3 { margin-bottom: .3rem; }
.callout p { margin: 0; color: var(--slate); }
.usecase { display: flex; gap: 16px; align-items: flex-start; }
.usecase .icon-badge { flex: none; margin: 0; }
.usecase h3 { font-size: 1.05rem; margin-bottom: .2rem; }
.usecase p { margin: 0; color: var(--slate); font-size: .94rem; }

.pc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.pc { border-radius: var(--r-lg); padding: 27px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-sm); }
.pc h3 { display: flex; align-items: center; gap: 10px; }
.pc-tag { width: 32px; height: 32px; border-radius: 11px; display: grid; place-items: center; color:#fff; font-weight: 800; }
.pc.pros .pc-tag { background: var(--grad-brand); }
.pc.cons .pc-tag { background: #fee2e2; color: #b91c1c; }
.pc ul { list-style: none; padding: 0; margin: 12px 0 0; }
.pc li { position: relative; padding-left: 26px; margin: 9px 0; color: var(--slate); font-size: .95rem; }
.pc.pros li::before { content:"+"; position:absolute; left:0; color:#047a8d; font-weight:800; }
.pc.cons li::before { content:"–"; position:absolute; left:0; color:#b91c1c; font-weight:800; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background:#fff; box-shadow: var(--shadow-sm); }
table.tbl { width: 100%; border-collapse: collapse; min-width: 520px; }
table.tbl th, table.tbl td { text-align: left; padding: 14px 18px; border-bottom: 1px solid var(--line); font-size: .94rem; }
table.tbl th { font-family: var(--font-head); color: var(--ink); background: var(--surface-2); }
table.tbl tr:last-child td { border-bottom: none; }
table.tbl td:first-child { font-weight: 700; color: var(--ink); }

.release { display: grid; gap: 16px; }
.release-item { display: flex; gap: 16px; align-items: flex-start; background:#fff; border:1px solid var(--line); border-radius: var(--r-lg); padding: 21px 22px; box-shadow: var(--shadow-sm); }
.release-item .dot { width: 13px; height: 13px; border-radius: 50%; background: var(--grad-brand); margin-top: 7px; flex:none; box-shadow: 0 0 0 7px rgba(6,182,212,.11); }
.release-item h3 { font-size: 1.02rem; margin-bottom: .2rem; }
.release-item p { margin: 0; color: var(--slate); font-size: .94rem; }

.post-card { display: flex; flex-direction: column; overflow: hidden; padding: 0; }
.post-card .thumb { aspect-ratio: 20/11; background: var(--surface-2); overflow: hidden; }
.post-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.post-card .post-body { padding: 20px 22px 23px; display: flex; flex-direction: column; flex: 1; }
.post-tag { font-family: var(--font-head); font-size: .72rem; letter-spacing: .11em; text-transform: uppercase; color: #047a8d; font-weight: 800; }
.post-card h3 { font-size: 1.04rem; margin: 7px 0 .35rem; }
.post-card p { color: var(--slate); font-size: .88rem; margin: 0 0 14px; }
.post-card .read { margin-top: auto; font-family: var(--font-head); font-weight: 800; font-size: .78rem; color: var(--blue-2); display: inline-flex; align-items: center; gap: 5px; letter-spacing: .02em; }
.post-card .read svg { width: 13px; height: 13px; padding: 2px; border-radius: 999px; background: rgba(37,99,235,.09); }
.post-card:hover .read { gap: 7px; }

.faq { max-width: 840px; margin-inline: auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--r-lg); background: #fff; margin-bottom: 12px; box-shadow: var(--shadow-sm); overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: 0; cursor: pointer; font-family: var(--font-head); font-weight: 700; font-size: 1rem; color: var(--ink); padding: 18px 54px 18px 22px; position: relative; }
.faq-q::after { content: ""; position: absolute; right: 22px; top: 50%; width: 11px; height: 11px; border-right: 2px solid var(--blue); border-bottom: 2px solid var(--blue); transform: translateY(-70%) rotate(45deg); transition: transform .25s; }
.faq-item.open .faq-q::after { transform: translateY(-30%) rotate(-135deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a-inner { padding: 0 22px 20px; color: var(--slate); font-size: .95rem; }

.site-footer { background: #06101f; color: #cbd5e1; padding: 62px 0 26px; }
.footer-grid { display: grid; grid-template-columns: 1.55fr 1fr 1fr 1fr; gap: 34px; }
.footer-brand img { height: 40px; margin-bottom: 16px; }
.footer-brand p { color: #9fb3cf; font-size: .92rem; max-width: 340px; }
.footer-col h4 { color: #fff; font-size: .78rem; letter-spacing: .11em; text-transform: uppercase; margin-bottom: 14px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin: 9px 0; }
.footer-col a { color: #cbd5e1; font-size: .92rem; }
.footer-col a:hover { color: #67e8f9; }
.footer-mail { color: #9fb3cf; font-size: .9rem; }
.footer-bottom { margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(148,163,184,.18); display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; align-items: center; text-align: center; font-size: .84rem; color: #9fb3cf; }
.footer-bottom a { color: #e5edf8; font-weight: 700; }
.footer-bottom a:hover { color: #67e8f9; }

.to-top { position: fixed; right: 22px; bottom: 22px; width: 48px; height: 48px; border-radius: 16px; background: var(--grad-brand); color: #fff; border: 0; cursor: pointer; display: grid; place-items: center; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(12px); transition: opacity .25s, transform .25s, visibility .25s; z-index: 55; }
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top svg { width: 22px; height: 22px; }

.page-hero { background: var(--grad-deep); padding: 58px 0 50px; border-bottom: 1px solid rgba(255,255,255,.08); color: #dbeafe; position: relative; overflow: hidden; }
.page-hero::before { content:""; position:absolute; inset:0; background-image: radial-gradient(circle at 78% 20%, rgba(6,182,212,.25), transparent 28%); pointer-events:none; }
.page-hero .container { position: relative; }
.page-hero h1 { color: #fff; }
.page-hero p.lead { max-width: 760px; color: #cfdbeb; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; font-size: .84rem; color: #9fb3cf; margin-bottom: 14px; list-style: none; padding: 0; }
.breadcrumb li::after { content: "›"; margin-left: 8px; color: rgba(219,234,254,.45); }
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a { color: #dbeafe; }

.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 46px; align-items: start; }
.prose { font-size: 1rem; color: #1f2937; }
.prose h2 { margin-top: 2em; }
.prose h3 { margin-top: 1.6em; }
.prose img { border-radius: var(--r-lg); margin: 1.6em 0; box-shadow: var(--shadow-sm); }
.prose figure { margin: 1.6em 0; }
.prose figcaption { font-size: .85rem; color: var(--muted); text-align: center; margin-top: 8px; }
.feature-img { width: 100%; border-radius: var(--r-lg); box-shadow: var(--shadow-md); margin-bottom: 8px; }
.prose blockquote { margin: 1.5em 0; padding: 16px 22px; border-left: 5px solid var(--cyan); background: var(--surface); border-radius: 0 var(--r) var(--r) 0; color: var(--slate); }
.prose code { background: var(--surface-2); padding: 2px 7px; border-radius: 6px; font-size: .9em; color: var(--blue-2); }
.tip-box { background: rgba(37,99,235,.08); border: 1px solid rgba(37,99,235,.17); border-radius: var(--r-lg); padding: 18px 22px; margin: 1.6em 0; }
.tip-box strong { color: var(--blue-2); }

.sidebar { position: sticky; top: calc(var(--header-h) + 20px); display: grid; gap: 22px; }
.side-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 22px; box-shadow: var(--shadow-sm); }
.side-card h4 { font-family: var(--font-head); font-size: .95rem; margin-bottom: 12px; }
.side-card ul { list-style: none; padding: 0; margin: 0; }
.side-card li { margin: 9px 0; }
.side-card a { font-size: .92rem; color: var(--slate); }
.side-card a:hover { color: var(--blue-2); }
.side-cta { background: var(--grad-deep); color: #fff; }
.side-cta h4, .side-cta p { color: #fff; }
.side-cta p { font-size: .9rem; color: #cfdbeb; margin-bottom: 14px; }
.related-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; margin-top: 22px; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: start; }
.contact-card { background:#fff; border:1px solid var(--line); border-radius: var(--r-lg); padding: 28px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 16px; }
.field label { display:block; font-weight:700; font-size:.9rem; margin-bottom:6px; font-family: var(--font-head); }
.field input, .field textarea { width:100%; padding:12px 14px; border:1px solid var(--line); border-radius: var(--r-sm); font-family: var(--font-body); font-size: .95rem; background: var(--surface); }
.field input:focus, .field textarea:focus { outline:none; border-color: var(--blue); background:#fff; }

.reveal { opacity: 1; transform: none; }
.reveal-ready .reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal-ready .reveal.in { opacity: 1; transform: none; }

@media (max-width: 1060px) {
  .nav-menu a { font-size: .84rem; padding-inline: 8px; }
}
@media (max-width: 940px) {
  .nav-toggle { display: inline-flex; }
  .nav-menu { position: fixed; inset: var(--header-h) 0 auto 0; flex-direction: column; align-items: stretch; gap: 2px; background: #fff; padding: 14px 18px 22px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg); transform: translateY(-140%); transition: transform .3s ease; margin: 0; }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { padding: 12px 14px; font-size: 1rem; border-radius: 12px; }
  .nav-menu a.nav-guide { text-align: center; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 430px; margin-inline: auto; }
  .split, .download-grid, .contact-grid { grid-template-columns: 1fr; }
  .split.reverse .split-media { order: 0; }
  .article-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .steps.grid-4 { grid-template-columns: repeat(2,1fr); }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .container { padding-inline: 18px; }
  .section { padding: 56px 0; }
  .hero { padding: 42px 0 56px; }
  .download { padding: 30px; }
  .grid-2, .grid-3, .grid-4, .pc-grid { grid-template-columns: 1fr; }
  .steps.grid-4 { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .footer-bottom { justify-content: center; text-align: center; }
  .btn-lg { width: 100%; }
  .hero-cta { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
}