@charset "UTF-8";
:root {
  --primary: #0b6cff;
  --primary-dark: #0754c7;
  --secondary: #08274a;
  --secondary-2: #0d3c69;
  --accent: #16c2a3;
  --accent-dark: #0d997f;
  --warm: #ff9d48;
  --ink: #102a43;
  --muted: #5c7085;
  --line: #d9e6f2;
  --surface: #ffffff;
  --surface-soft: #f5f9fd;
  --surface-blue: #eaf4ff;
  --success-soft: #eafaf6;
  --danger-soft: #fff3ec;
  --shadow-sm: 0 8px 28px rgba(8,39,74,.08);
  --shadow-md: 0 20px 60px rgba(8,39,74,.14);
  --radius-sm: 14px;
  --radius: 22px;
  --radius-lg: 34px;
  --container: 1140px;
  --header-h: 78px;
  --heading-font: "Bahnschrift", "Segoe UI Variable Display", "Segoe UI", Arial, sans-serif;
  --body-font: "Segoe UI Variable Text", "Segoe UI", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 18px); }
body { margin: 0; color: var(--ink); background: var(--surface); font-family: var(--body-font); font-size: 17px; line-height: 1.72; overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-dark); text-decoration: none; }
a:hover { color: var(--primary); }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
svg { flex: 0 0 auto; }
.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 10000; background: #fff; color: var(--secondary); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow-sm); }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.94); backdrop-filter: blur(14px); border-bottom: 1px solid rgba(217,230,242,.75); transition: box-shadow .25s ease; }
.site-header.is-scrolled { box-shadow: 0 12px 32px rgba(8,39,74,.11); }
.header-inner { min-height: var(--header-h); display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-logo { display: inline-flex; align-items: center; line-height: 0; min-width: 185px; }
.site-logo img { width: 205px; height: auto; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a { display: inline-flex; align-items: center; color: #29445f; font-weight: 650; font-size: 15px; padding: 12px 11px; border-radius: 10px; white-space: nowrap; }
.main-nav a:hover, .main-nav a.active { color: var(--primary); background: var(--surface-blue); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.menu-toggle { display: none; width: 46px; height: 46px; border: 1px solid var(--line); border-radius: 12px; background: #fff; color: var(--secondary); align-items: center; justify-content: center; }
.menu-toggle .bars, .menu-toggle .bars::before, .menu-toggle .bars::after { width: 22px; height: 2px; background: currentColor; display: block; border-radius: 10px; position: relative; transition: .25s ease; }
.menu-toggle .bars::before, .menu-toggle .bars::after { content: ""; position: absolute; left: 0; }
.menu-toggle .bars::before { top: -7px; }
.menu-toggle .bars::after { top: 7px; }
.menu-toggle[aria-expanded="true"] .bars { background: transparent; }
.menu-toggle[aria-expanded="true"] .bars::before { top: 0; transform: rotate(45deg); }
.menu-toggle[aria-expanded="true"] .bars::after { top: 0; transform: rotate(-45deg); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 50px; padding: 13px 20px; border-radius: 14px; border: 1px solid transparent; font-weight: 750; line-height: 1.2; text-align: center; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--primary), #268cff); box-shadow: 0 12px 30px rgba(11,108,255,.28); }
.btn-primary:hover { color: #fff; box-shadow: 0 18px 36px rgba(11,108,255,.34); }
.btn-secondary { color: var(--secondary); border-color: #bcd3e7; background: #fff; }
.btn-secondary:hover { color: var(--secondary); border-color: var(--primary); box-shadow: var(--shadow-sm); }
.btn-accent { color: #052f2a; background: linear-gradient(135deg, #59e0c8, var(--accent)); box-shadow: 0 13px 30px rgba(22,194,163,.28); }
.btn-accent:hover { color: #052f2a; box-shadow: 0 18px 36px rgba(22,194,163,.34); }
.btn-sm { min-height: 44px; padding: 11px 16px; border-radius: 12px; font-size: 15px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--primary-dark); font-size: 13px; line-height: 1; font-weight: 800; letter-spacing: .13em; text-transform: uppercase; margin-bottom: 14px; }
.eyebrow::before { content: ""; width: 30px; height: 3px; border-radius: 99px; background: linear-gradient(90deg, var(--primary), var(--accent)); }
h1,h2,h3,h4 { font-family: var(--heading-font); color: var(--secondary); line-height: 1.16; margin: 0 0 18px; letter-spacing: -.025em; }
h1 { font-size: clamp(42px, 5.4vw, 72px); }
h2 { font-size: clamp(32px, 4vw, 46px); }
h3 { font-size: clamp(21px, 2.2vw, 26px); }
h4 { font-size: 19px; }
p { margin: 0 0 18px; }
.lead { font-size: clamp(18px, 2vw, 21px); color: #48657f; line-height: 1.7; }
.muted { color: var(--muted); }
.section { padding: 92px 0; position: relative; }
.section-sm { padding: 66px 0; }
.section-soft { background: var(--surface-soft); }
.section-blue { background: linear-gradient(180deg, #eff7ff, #f8fbff); }
.section-dark { color: #d9eaff; background: radial-gradient(circle at 90% 5%, rgba(11,108,255,.28), transparent 35%), linear-gradient(135deg, #061c35, #0a345c); }
.section-dark h2, .section-dark h3, .section-dark .eyebrow { color: #fff; }
.section-dark .eyebrow::before { background: var(--accent); }
.section-head { max-width: 790px; margin: 0 auto 46px; text-align: center; }
.section-head p { max-width: 720px; margin-inline: auto; color: var(--muted); }
.section-dark .section-head p { color: #b9d2eb; }
.hero { min-height: 680px; padding: 92px 0 78px; overflow: hidden; background: radial-gradient(circle at 78% 18%, rgba(22,194,163,.15), transparent 28%), radial-gradient(circle at 18% 4%, rgba(11,108,255,.14), transparent 32%), #f8fbff; }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .5; background-image: linear-gradient(rgba(11,108,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(11,108,255,.045) 1px, transparent 1px); background-size: 46px 46px; mask-image: linear-gradient(to bottom, #000, transparent 90%); pointer-events: none; }
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.18fr .82fr; align-items: center; gap: 48px; }
.hero-copy { max-width: 660px; }
.hero-copy h1 { max-width: 660px; font-size: clamp(36px, 3.2vw, 44px); line-height: 1.1; letter-spacing: -.032em; }
.hero-title-line { display: block; white-space: nowrap; }
.hero-copy h1 .hero-keyword { color: var(--primary); }
.hero-copy .lead { max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 24px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px; }
.trust-chip { display: inline-flex; align-items: center; gap: 8px; color: #365570; background: rgba(255,255,255,.86); border: 1px solid #d5e4f1; padding: 9px 12px; border-radius: 999px; font-weight: 700; font-size: 13px; box-shadow: 0 6px 18px rgba(8,39,74,.05); }
.trust-chip svg { color: var(--accent-dark); }
.hero-visual { position: relative; }
.hero-frame { padding: 14px; border-radius: 32px; background: linear-gradient(135deg, rgba(11,108,255,.42), rgba(22,194,163,.22)); border: 1px solid rgba(255,255,255,.78); box-shadow: 0 28px 75px rgba(8,39,74,.18); transform: rotate(.6deg); transition: transform .3s ease, box-shadow .3s ease; }
.hero-frame:hover { transform: rotate(0) translateY(-4px); box-shadow: 0 34px 88px rgba(8,39,74,.22); }
.hero-frame img { width: 100%; border-radius: 23px; aspect-ratio: 16 / 9; object-fit: cover; }
.floating-note { position: absolute; display: flex; align-items: center; gap: 11px; padding: 13px 16px; border-radius: 15px; background: rgba(255,255,255,.96); border: 1px solid #d6e7f4; box-shadow: var(--shadow-sm); font-size: 14px; font-weight: 750; color: var(--secondary); }
.floating-note.one { left: -28px; bottom: 54px; }
.floating-note.two { right: -20px; top: 38px; }
.floating-note svg { color: var(--primary); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 58px; align-items: center; }
.content-copy > *:last-child { margin-bottom: 0; }
.media-card { position: relative; padding: 13px; border-radius: 30px; background: linear-gradient(145deg, #d9ebfa, #ffffff); box-shadow: var(--shadow-md); }
.media-card img { border-radius: 20px; aspect-ratio: 16 / 9; object-fit: cover; }
.info-strip { margin-top: 22px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.info-strip > div { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.info-strip strong { display: block; color: var(--secondary); font-family: var(--heading-font); font-size: 18px; }
.info-strip span { font-size: 13px; color: var(--muted); }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card-grid.two { grid-template-columns: repeat(2, 1fr); }
.card-grid.four { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.card:hover { transform: translateY(-5px); border-color: #a9cae6; box-shadow: var(--shadow-md); }
.card p:last-child { margin-bottom: 0; }
.icon-box { width: 54px; height: 54px; display: inline-flex; align-items: center; justify-content: center; border-radius: 16px; color: var(--primary); background: var(--surface-blue); margin-bottom: 20px; }
.icon-box.teal { color: var(--accent-dark); background: var(--success-soft); }
.icon-box.warm { color: #c35a00; background: var(--danger-soft); }
.feature-card { position: relative; overflow: hidden; }
.feature-card::after { content: ""; width: 90px; height: 90px; position: absolute; right: -36px; top: -40px; border-radius: 50%; background: rgba(11,108,255,.07); }
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.step { counter-increment: step; position: relative; padding: 30px 24px 24px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.step::before { content: "0" counter(step); display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; margin-bottom: 22px; border-radius: 15px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--accent)); font-family: var(--heading-font); font-weight: 800; }
.step:not(:last-child)::after { content: ""; position: absolute; width: 18px; height: 2px; right: -19px; top: 53px; background: #b7d2e8; }
.compatibility-layout { display: grid; grid-template-columns: .88fr 1.12fr; gap: 36px; align-items: stretch; }
.compatibility-panel { border-radius: var(--radius-lg); padding: 36px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.os-list { display: grid; gap: 14px; }
.os-item { display: grid; grid-template-columns: 48px 1fr auto; gap: 15px; align-items: center; padding: 16px; border-radius: 16px; background: var(--surface-soft); border: 1px solid #e3edf6; }
.status { display: inline-flex; align-items: center; justify-content: center; min-width: 92px; padding: 7px 10px; border-radius: 999px; font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; }
.status.verified { color: #08725e; background: #dff8f1; }
.status.check { color: #9b4c00; background: #fff0df; }
.notice { display: flex; gap: 18px; padding: 24px; border-radius: 20px; border: 1px solid #f1c79f; background: #fff7ef; color: #64350c; }
.notice strong { color: #6c3500; }
.notice.info { border-color: #b9d9f3; background: #f0f8ff; color: #244c6c; }
.notice.success { border-color: #a9e1d4; background: #eefbf8; color: #15584d; }
.check-list, .plain-list { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.check-list li, .plain-list li { position: relative; padding-left: 34px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; width: 23px; height: 23px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; color: #066652; background: #dff8f1; font-weight: 900; font-size: 13px; }
.plain-list li::before { content: ""; position: absolute; left: 6px; top: 13px; width: 8px; height: 8px; border-radius: 50%; background: var(--primary); }
.download-shell { display: grid; grid-template-columns: 1.03fr .97fr; align-items: center; gap: 44px; padding: 44px; border-radius: 34px; color: #d7e9fa; background: radial-gradient(circle at 95% 10%, rgba(22,194,163,.23), transparent 31%), linear-gradient(135deg, #061d37, #0b3c69); box-shadow: var(--shadow-md); }
.download-shell h2, .download-shell h3 { color: #fff; }
.download-shell .eyebrow { color: #90f0df; }
.download-shell .eyebrow::before { background: var(--accent); }
.download-shell p { color: #c0d7eb; }
.download-meta { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 28px; }
.download-meta span { display: inline-flex; align-items: center; gap: 7px; padding: 9px 12px; border-radius: 999px; background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.13); color: #e8f5ff; font-size: 13px; font-weight: 700; }
.download-visual { padding: 12px; border-radius: 24px; background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.12); }
.download-visual img { border-radius: 17px; aspect-ratio: 16/9; object-fit: cover; }
.split-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.procon { border-radius: var(--radius); padding: 30px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-sm); }
.procon.pro { border-top: 5px solid var(--accent); }
.procon.con { border-top: 5px solid var(--warm); }
.troubleshooting { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.problem-card { display: grid; grid-template-columns: 46px 1fr; gap: 16px; padding: 23px; border-radius: 18px; border: 1px solid var(--line); background: #fff; }
.problem-card .number { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 13px; background: var(--surface-blue); color: var(--primary-dark); font-family: var(--heading-font); font-weight: 800; }
.release-box { display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: start; max-width: 920px; margin: auto; padding: 34px; border: 1px solid #b9d7ef; background: linear-gradient(135deg, #f7fbff, #eaf6ff); border-radius: 28px; box-shadow: var(--shadow-sm); }
.release-icon { width: 74px; height: 74px; border-radius: 22px; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.guide-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.guide-card { overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: .25s ease; }
.guide-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.guide-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.guide-card-body { padding: 24px; }
.guide-card .meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 11px; color: var(--muted); font-size: 13px; font-weight: 700; }
.guide-link { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; }
.faq-list { max-width: 900px; margin-inline: auto; display: grid; gap: 13px; }
.faq-item { border: 1px solid var(--line); border-radius: 17px; background: #fff; overflow: hidden; }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 21px 22px; border: 0; background: #fff; color: var(--secondary); text-align: left; font-weight: 800; }
.faq-question svg { transition: transform .25s ease; }
.faq-question[aria-expanded="true"] svg { transform: rotate(45deg); }
.faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .25s ease; }
.faq-answer > div { overflow: hidden; }
.faq-answer p { padding: 0 22px 22px; margin: 0; color: var(--muted); }
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.page-hero { padding: 78px 0 56px; background: radial-gradient(circle at 90% 20%, rgba(22,194,163,.15), transparent 30%), linear-gradient(180deg,#f4f9ff,#fff); border-bottom: 1px solid #e0ebf4; }
.page-hero h1 { font-size: clamp(38px,5vw,60px); max-width: 900px; }
.page-hero p { max-width: 760px; color: var(--muted); font-size: 19px; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; color: #6b7f92; font-size: 14px; font-weight: 700; margin-bottom: 22px; }
.breadcrumb a { color: var(--primary-dark); }
.article-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: 42px; align-items: start; }
.article { min-width: 0; }
.article-feature { margin: 0 0 34px; padding: 12px; border-radius: 25px; background: #edf5fb; border: 1px solid var(--line); }
.article-feature img { border-radius: 16px; aspect-ratio: 16/9; object-fit: cover; width: 100%; }
.article h2 { margin-top: 46px; font-size: clamp(29px,3vw,38px); }
.article h3 { margin-top: 32px; }
.article ul, .article ol { margin: 0 0 22px; padding-left: 24px; }
.article li { margin-bottom: 10px; }
.article code { padding: 2px 7px; border-radius: 7px; color: #0b4f85; background: #edf6ff; font-family: Consolas, monospace; font-size: .92em; overflow-wrap: anywhere; }
.article .callout { margin: 28px 0; padding: 24px; border-left: 5px solid var(--primary); border-radius: 0 16px 16px 0; background: #f0f7ff; }
.article .callout.warning { border-left-color: var(--warm); background: #fff7ef; }
.article .related-inline { margin-top: 42px; padding: 28px; border-radius: 22px; background: var(--surface-soft); border: 1px solid var(--line); }
.article .related-inline ul { margin-bottom: 0; }
.sidebar { position: sticky; top: calc(var(--header-h) + 24px); display: grid; gap: 20px; }
.sidebar-card { padding: 23px; border-radius: 20px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-sm); }
.sidebar-card h3 { font-size: 21px; }
.sidebar-card ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 11px; }
.sidebar-card a { font-weight: 700; line-height: 1.4; }
.sidebar-card .btn { width: 100%; margin-top: 6px; }
.blog-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.blog-count { color: var(--muted); font-weight: 700; }
.policy-content { max-width: 900px; margin-inline: auto; }
.policy-content h2 { font-size: 34px; margin-top: 42px; }
.policy-content h3 { margin-top: 30px; }
.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 28px; }
.contact-panel { padding: 32px; border-radius: 24px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow-sm); }
.email-display { display: inline-flex; align-items: center; gap: 10px; padding: 14px 17px; border-radius: 13px; color: var(--secondary); background: var(--surface-blue); border: 1px solid #cce1f4; font-weight: 800; overflow-wrap: anywhere; }
.site-footer { color: #c8dbed; background: #061b31; }
.footer-main { padding: 68px 0 42px; display: grid; grid-template-columns: 1.25fr .75fr 1fr; gap: 54px; }
.footer-brand img { width: 210px; margin-bottom: 18px; }
.footer-logo { min-width: 0; }
.footer-brand p { max-width: 420px; color: #9fb9d1; }
.footer-title { color: #fff; font-size: 18px; margin-bottom: 18px; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-links a { color: #c8dbed; text-decoration: none; }
.footer-links a:hover { color: #fff; }
.footer-bottom { padding: 22px 0; border-top: 1px solid rgba(255,255,255,.11); color: #a9c1d7; font-size: 14px; }
.footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer-copyright { text-align: left; }
.footer-disclaimer { max-width: 600px; text-align: right; color: #91abc3; }
.footer-bottom a { color: #fff; text-decoration: none; font-weight: 800; }
.scroll-top { position: fixed; right: 22px; bottom: 22px; z-index: 900; width: 48px; height: 48px; display: grid; place-items: center; border: 0; border-radius: 15px; color: #fff; background: var(--secondary); box-shadow: var(--shadow-md); opacity: 0; visibility: hidden; transform: translateY(12px); transition: .25s ease; }
.scroll-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }
.visually-hidden { position: absolute!important; width: 1px!important; height: 1px!important; padding: 0!important; margin: -1px!important; overflow: hidden!important; clip: rect(0,0,0,0)!important; white-space: nowrap!important; border: 0!important; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *,*::before,*::after { animation-duration: .01ms!important; animation-iteration-count: 1!important; transition-duration: .01ms!important; } .reveal { opacity: 1; transform: none; } }
@media (max-width: 1060px) {
  .main-nav a { padding-inline: 8px; font-size: 14px; }
  .hero-copy h1 { font-size: 34px; }
  .card-grid.four { grid-template-columns: repeat(2,1fr); }
  .steps { grid-template-columns: repeat(2,1fr); }
  .step:nth-child(2)::after { display: none; }
}
@media (max-width: 900px) {
  :root { --header-h: 72px; }
  .menu-toggle { display: inline-flex; }
  .main-nav { position: fixed; top: var(--header-h); left: 20px; right: 20px; display: none; align-items: stretch; flex-direction: column; gap: 4px; padding: 14px; max-height: calc(100vh - 100px); overflow-y: auto; border: 1px solid var(--line); border-radius: 18px; background: #fff; box-shadow: var(--shadow-md); }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 13px 14px; }
  .hero { min-height: auto; padding-top: 70px; }
  .hero-grid, .two-col, .download-shell, .compatibility-layout, .contact-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: none; text-align: center; }
  .hero-copy h1 { max-width: 760px; margin-inline: auto; }
  .hero-copy .lead { margin-inline: auto; }
  .hero-actions, .trust-row { justify-content: center; }
  .hero-visual { max-width: 760px; margin-inline: auto; }
  .floating-note.one { left: 10px; }
  .floating-note.two { right: 10px; }
  .two-col .media-card { order: 2; }
  .article-wrap { grid-template-columns: 1fr; }
  .sidebar { position: static; grid-template-columns: repeat(2,1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .container { width: min(100% - 28px, var(--container)); }
  .section { padding: 72px 0; }
  .section-sm { padding: 52px 0; }
  .site-logo img { width: 178px; }
  .card-grid, .card-grid.two, .guide-grid, .troubleshooting, .split-list { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step::after { display: none; }
  .info-strip { grid-template-columns: 1fr; }
  .download-shell { padding: 28px; }
  .sidebar { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom-inner { align-items: flex-start; flex-direction: column; gap: 8px; }
  .footer-disclaimer { max-width: none; text-align: left; }
  .footer-brand { grid-column: auto; }
  .blog-toolbar { align-items: flex-start; flex-direction: column; }
  .os-item { grid-template-columns: 44px 1fr; }
  .os-item .status { grid-column: 2; justify-self: start; }
  .release-box { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  h1 { font-size: 40px; }
  .hero-copy h1 { font-size: 34px; }
  .hero-title-line { white-space: normal; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .floating-note { display: none; }
  .card { padding: 23px; }
  .compatibility-panel { padding: 24px; }
  .download-shell { padding: 24px; border-radius: 24px; }
  .notice { flex-direction: column; }
  .article-feature { padding: 8px; }
  .page-hero { padding-top: 58px; }
}