:root {
  --primary: #6c5ce7;
  --primary-dark: #5142c7;
  --secondary: #2a9d8f;
  --accent: #ffb35c;
  --ink: #1f243a;
  --muted: #667085;
  --line: #e4e1ef;
  --surface: #ffffff;
  --surface-soft: #f7f6fc;
  --surface-mint: #effaf7;
  --surface-warm: #fff8ef;
  --shadow: 0 20px 55px rgba(48, 42, 87, 0.10);
  --shadow-sm: 0 10px 30px rgba(48, 42, 87, 0.08);
  --radius: 22px;
  --container: 1140px;
  --header-height: 78px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fbfbfe;
  font-family: "Poppins", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  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, select { font: inherit; font-family: "Poppins", "Segoe UI", Arial, sans-serif; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid rgba(108,92,231,.38); outline-offset: 3px; }
::selection { background: rgba(108,92,231,.18); }

.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
.section { padding: 92px 0; position: relative; }
.section[id] { scroll-margin-top: calc(var(--header-height) + 22px); }
.section-soft { background: var(--surface-soft); }
.section-mint { background: var(--surface-mint); }
.section-warm { background: var(--surface-warm); }
.section-heading { max-width: 780px; margin: 0 auto 42px; text-align: center; }
.section-heading.left { margin-left: 0; text-align: left; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px; margin-bottom: 10px;
  color: var(--primary-dark); font-size: 13px; font-weight: 700; letter-spacing: .11em; text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 26px; height: 3px; border-radius: 99px; background: linear-gradient(90deg,var(--primary),var(--secondary)); }
h1,h2,h3,h4 { margin: 0 0 16px; line-height: 1.18; letter-spacing: -.025em; }
h1 { font-size: clamp(42px, 6vw, 72px); }
h2 { font-size: clamp(31px, 4vw, 44px); }
h3 { font-size: 23px; }
p { margin: 0 0 18px; }
.lead { font-size: 19px; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.center { text-align: center; }

.skip-link { position: fixed; left: 14px; top: -80px; background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 10px; z-index: 9999; }
.skip-link:focus { top: 14px; }
.site-header-shell { position: sticky; top: 0; z-index: 1000; background: rgba(251,251,254,.93); backdrop-filter: blur(15px); border-bottom: 1px solid transparent; transition: box-shadow .25s ease, border-color .25s ease; }
.site-header-shell.is-scrolled { box-shadow: 0 10px 28px rgba(33,37,58,.08); border-color: var(--line); }
.nav-wrap { min-height: var(--header-height); display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 800; font-size: 22px; letter-spacing: -.03em; flex: 0 0 auto; }
.brand img { width: 42px; height: 42px; border-radius: 12px; }
.primary-nav { display: flex; align-items: center; gap: 7px; }
.nav-link { color: #3d4357; font-weight: 600; font-size: 14px; padding: 10px 11px; border-radius: 10px; }
.nav-link:hover, .nav-link.is-active { color: var(--primary-dark); background: #f0eefc; }
.nav-cta { margin-left: 7px; }
.mobile-toggle { display: none; width: 46px; height: 46px; border: 1px solid var(--line); background: #fff; border-radius: 12px; color: var(--ink); align-items: center; justify-content: center; }
.mobile-toggle span, .mobile-toggle::before, .mobile-toggle::after { content: ""; width: 20px; height: 2px; background: currentColor; border-radius: 5px; display: block; transition: transform .2s ease, opacity .2s ease; }
.mobile-toggle span { margin: 5px 0; }
.mobile-toggle[aria-expanded="true"]::before { transform: translateY(7px) rotate(45deg); }
.mobile-toggle[aria-expanded="true"] span { opacity: 0; }
.mobile-toggle[aria-expanded="true"]::after { transform: translateY(-7px) rotate(-45deg); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 50px; padding: 12px 20px; border: 1px solid transparent; border-radius: 13px; font-weight: 700; line-height: 1.2; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: linear-gradient(135deg,var(--primary),var(--primary-dark)); box-shadow: 0 12px 26px rgba(108,92,231,.26); }
.btn-primary:hover { color: #fff; box-shadow: 0 16px 32px rgba(108,92,231,.32); }
.btn-secondary { color: var(--ink); background: #fff; border-color: var(--line); box-shadow: var(--shadow-sm); }
.btn-secondary:hover { color: var(--primary-dark); }
.button-row { display: flex; flex-wrap: wrap; gap: 13px; }

.hero { padding: 72px 0 88px; background: radial-gradient(circle at 88% 15%, rgba(108,92,231,.12), transparent 34%), radial-gradient(circle at 8% 78%, rgba(42,157,143,.10), transparent 28%), #fbfbfe; }
.hero-grid { display: grid; grid-template-columns: .95fr 1.05fr; align-items: center; gap: 62px; }
.hero-copy .lead { max-width: 650px; }
.hero-copy h1 span { color: var(--primary); }
.hero-visual { position: relative; }
.hero-visual img { border-radius: 28px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.floating-note { position: absolute; background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 11px 14px; box-shadow: var(--shadow-sm); font-size: 13px; font-weight: 700; }
.floating-note.one { left: -24px; bottom: 90px; }
.floating-note.two { right: -16px; top: 80px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 25px 0 30px; }
.trust-pill { display: inline-flex; align-items: center; gap: 8px; color: #4c5369; background: #fff; border: 1px solid var(--line); border-radius: 999px; padding: 8px 12px; font-size: 13px; font-weight: 600; }
.trust-pill::before { content: "✓"; color: var(--secondary); font-weight: 800; }

.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 58px; align-items: center; }
.about-media img { border-radius: 26px; border: 1px solid var(--line); box-shadow: var(--shadow); }
.about-points { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 27px; }
.mini-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px; }
.mini-card strong { display: block; margin-bottom: 4px; }

.feature-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; }
.feature-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 23px; box-shadow: 0 12px 35px rgba(41,43,74,.05); transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease; }
.feature-card:hover { transform: translateY(-5px); border-color: #cac3f4; box-shadow: var(--shadow-sm); }
.icon-chip { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 14px; background: #eeeafd; color: var(--primary-dark); font-weight: 800; margin-bottom: 18px; }
.feature-card:nth-child(3n+2) .icon-chip { background: #e8f8f4; color: #18796d; }
.feature-card:nth-child(3n) .icon-chip { background: #fff1dd; color: #a96116; }
.feature-card p { color: var(--muted); margin-bottom: 0; }

.steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; counter-reset: step; }
.step-card { position: relative; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 28px 24px; box-shadow: var(--shadow-sm); }
.step-card::before { counter-increment: step; content: counter(step); width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center; background: var(--primary); color: #fff; font-weight: 800; margin-bottom: 17px; }
.step-card:not(:last-child)::after { content: ""; position: absolute; width: 22px; height: 2px; background: #cfc9ef; right: -22px; top: 47px; }
.step-card p { color: var(--muted); margin: 0; }

.split-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: stretch; }
.panel { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 30px; box-shadow: var(--shadow-sm); }
.check-list, .plain-list { list-style: none; padding: 0; margin: 20px 0 0; }
.check-list li, .plain-list li { position: relative; padding-left: 30px; margin: 12px 0; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 1px; color: var(--secondary); font-weight: 800; }
.plain-list li::before { content: "•"; position: absolute; left: 8px; top: 0; color: var(--primary); font-weight: 900; }
.compat-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin-top: 25px; }
.compat-item { background: var(--surface-soft); border: 1px solid var(--line); border-radius: 16px; padding: 18px; }
.compat-item strong { display: block; }

.use-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.use-card { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 25px; }
.use-card .tag { color: var(--primary-dark); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .08em; }

.setup-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 36px; align-items: start; }
.code-window { background: #20243b; color: #f4f5ff; border-radius: 22px; overflow: hidden; box-shadow: var(--shadow); }
.code-bar { padding: 14px 18px; background: #2b304b; color: #cdd3ea; font-size: 13px; }
pre { margin: 0; padding: 24px; overflow-x: auto; white-space: pre; font-family: Consolas, "Courier New", monospace; line-height: 1.7; font-size: 14px; }
.inline-code { font-family: Consolas, "Courier New", monospace; background: #f0eef8; border: 1px solid #e0dcf0; border-radius: 7px; padding: 2px 6px; font-size: .92em; }
.setup-notes { display: grid; gap: 13px; margin-top: 20px; }
.note { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 17px 18px; }

.download-shell { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 48px; padding: 48px; background: linear-gradient(135deg,#f5f2ff,#ecfbf7); border: 1px solid #dcd7ef; border-radius: 32px; box-shadow: var(--shadow); }
.download-shell img { border-radius: 22px; border: 1px solid var(--line); }
.download-meta { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin: 24px 0; }
.download-meta div { background: rgba(255,255,255,.75); border: 1px solid var(--line); border-radius: 14px; padding: 14px; }
.download-meta strong { display: block; font-size: 14px; }
.download-meta span { color: var(--muted); font-size: 13px; }

.notice { display: flex; gap: 20px; align-items: flex-start; background: #fff; border: 1px solid #f2d5aa; border-left: 5px solid var(--accent); border-radius: 18px; padding: 26px; }
.notice-icon { flex: 0 0 44px; width: 44px; height: 44px; display: grid; place-items: center; border-radius: 13px; background: #fff1dd; color: #9b5a12; font-weight: 900; }

.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.pros, .cons { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 30px; }
.pros { border-top: 5px solid var(--secondary); }
.cons { border-top: 5px solid var(--accent); }
.pros li::before { content: "+"; color: var(--secondary); }
.cons li::before { content: "–"; color: #b36a17; }
.pros li::before, .cons li::before { position: absolute; left: 7px; font-weight: 900; }

.release-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 26px; }
.release-badge { display: flex; flex-direction: column; justify-content: center; align-items: center; min-height: 250px; background: linear-gradient(145deg,var(--primary),var(--primary-dark)); color: #fff; border-radius: 26px; text-align: center; box-shadow: var(--shadow); }
.release-badge .version { font-size: 58px; font-weight: 800; line-height: 1; }
.release-badge span { margin-top: 12px; opacity: .84; }
.release-copy { background: #fff; border: 1px solid var(--line); border-radius: 26px; padding: 32px; }

.issue-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.issue { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.issue h3 { font-size: 19px; }
.issue p { color: var(--muted); margin: 0; }

.guide-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.guide-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: 21px; overflow: hidden; box-shadow: var(--shadow-sm); }
.guide-card img { aspect-ratio: 16/9; object-fit: cover; }
.guide-card-body { padding: 23px; display: flex; flex-direction: column; flex: 1; }
.guide-card p { color: var(--muted); }
.guide-card .text-link { margin-top: auto; font-weight: 700; }

.faq-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: start; }
.faq-category { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 22px; box-shadow: var(--shadow-sm); }
.faq-category-title { display: flex; align-items: center; gap: 12px; padding: 5px 4px 18px; }
.faq-category-title span { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; background: #eeeafd; color: var(--primary-dark); font-weight: 800; }
.faq-item { border-top: 1px solid var(--line); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 18px; background: transparent; border: 0; padding: 18px 2px; text-align: left; color: var(--ink); font-weight: 700; }
.faq-question::after { content: "+"; flex: 0 0 30px; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--surface-soft); color: var(--primary-dark); font-size: 20px; }
.faq-question[aria-expanded="true"]::after { content: "–"; background: var(--primary); color: #fff; }
.faq-answer { padding: 0 38px 19px 2px; color: var(--muted); }
.faq-answer[hidden] { display: none; }

.site-footer { background: #22263b; color: #d7dbea; padding: 62px 0 24px; }
.site-footer .brand { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.25fr .7fr 1.1fr; gap: 48px; }
.footer-description { max-width: 440px; color: #b9bfd2; margin-top: 18px; }
.footer-title { color: #fff; font-size: 17px; margin-bottom: 16px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin: 10px 0; }
.footer-links a { color: #cfd4e5; text-decoration: none; }
.footer-links a:hover { color: #fff; }
.footer-email { display: inline-block; color: #fff; font-weight: 700; margin-top: 6px; }
.copyright { margin-top: 38px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); text-align: center; color: #abb2c8; font-size: 14px; }
.copyright a { color: #fff; text-decoration: none; }
.footer-disclaimer { margin: 9px 0 0; text-align: center; color: #929bb7; font-size: 13px; line-height: 1.55; }

.scroll-top { position: fixed; right: 22px; bottom: 22px; width: 48px; height: 48px; border: 0; border-radius: 14px; background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); opacity: 0; visibility: hidden; transform: translateY(12px); transition: .2s ease; z-index: 900; }
.scroll-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* Inner pages */
.page-hero { padding: 70px 0 62px; background: radial-gradient(circle at 78% 25%,rgba(108,92,231,.12),transparent 32%), var(--surface-soft); border-bottom: 1px solid var(--line); }
.page-hero .container { max-width: 900px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--muted); font-size: 14px; margin-bottom: 18px; }
.breadcrumbs a { font-weight: 600; }
.content-shell { max-width: 900px; margin: 0 auto; }
.content-card { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 36px; box-shadow: var(--shadow-sm); }
.content-card + .content-card { margin-top: 20px; }
.content-card h2 { font-size: 31px; margin-top: 10px; }
.content-card h3 { margin-top: 24px; }

.blog-listing { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.blog-card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: 22px; overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .2s ease; }
.blog-card:hover { transform: translateY(-4px); }
.blog-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.blog-card-content { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.blog-card .category { color: var(--primary-dark); font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.blog-card h2 { font-size: 24px; margin-top: 9px; }
.blog-card p { color: var(--muted); }
.blog-card .text-link { margin-top: auto; font-weight: 700; }

.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 32px; align-items: start; }
.article-main { min-width: 0; }
.article-main > img { border-radius: 24px; border: 1px solid var(--line); box-shadow: var(--shadow-sm); margin-bottom: 30px; }
.article-content { background: #fff; border: 1px solid var(--line); border-radius: 24px; padding: 38px; }
.article-content h2 { font-size: 31px; margin-top: 38px; }
.article-content h2:first-of-type { margin-top: 8px; }
.article-content h3 { margin-top: 26px; }
.article-content ul, .article-content ol { padding-left: 22px; }
.article-content li { margin: 9px 0; }
.article-content table { width: 100%; border-collapse: collapse; margin: 22px 0; font-size: 15px; }
.article-content th, .article-content td { border: 1px solid var(--line); padding: 12px; text-align: left; vertical-align: top; }
.article-content th { background: var(--surface-soft); }
.article-sidebar { position: sticky; top: calc(var(--header-height) + 22px); display: grid; gap: 18px; }
.sidebar-box { background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 22px; box-shadow: var(--shadow-sm); }
.sidebar-box h2 { font-size: 19px; }
.sidebar-links { list-style: none; padding: 0; margin: 0; }
.sidebar-links li { border-top: 1px solid var(--line); }
.sidebar-links li:first-child { border-top: 0; }
.sidebar-links a { display: block; padding: 10px 0; font-size: 14px; font-weight: 600; }
.related-guides { margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--line); }
.related-guides ul { display: grid; grid-template-columns: repeat(2,1fr); gap: 12px; list-style: none; padding: 0; }
.related-guides a { display: block; background: var(--surface-soft); border: 1px solid var(--line); border-radius: 13px; padding: 13px; font-weight: 700; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1040px) {
  .feature-grid { grid-template-columns: repeat(2,1fr); }
  .guide-grid, .blog-listing { grid-template-columns: repeat(2,1fr); }
  .hero-grid { gap: 36px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  :root { --header-height: 70px; }
  .container { width: min(100% - 28px, var(--container)); }
  .section { padding: 72px 0; }
  .mobile-toggle { display: block; }
  .primary-nav { position: absolute; left: 14px; right: 14px; top: calc(100% + 8px); display: none; flex-direction: column; align-items: stretch; gap: 3px; padding: 14px; background: #fff; border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
  .primary-nav.is-open { display: flex; }
  .nav-link { padding: 12px 13px; }
  .nav-cta { margin: 6px 0 0; width: 100%; }
  .hero-grid, .about-layout, .setup-layout, .download-shell, .release-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 52px; }
  .hero-copy { text-align: center; }
  .hero-copy .lead { margin-inline: auto; }
  .hero-copy .button-row, .hero-copy .trust-row { justify-content: center; }
  .floating-note { display: none; }
  .steps { grid-template-columns: repeat(2,1fr); }
  .step-card::after { display: none; }
  .use-grid { grid-template-columns: repeat(2,1fr); }
  .faq-wrap { grid-template-columns: 1fr; }
  .download-shell { padding: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > :first-child { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  body { font-size: 15px; }
  h1 { font-size: 40px; }
  .section { padding: 60px 0; }
  .button-row { flex-direction: column; }
  .button-row .btn { width: 100%; }
  .feature-grid, .steps, .split-panel, .use-grid, .compat-grid, .pros-cons, .issue-grid, .guide-grid, .blog-listing, .footer-grid, .article-sidebar, .related-guides ul { grid-template-columns: 1fr; }
  .about-points { grid-template-columns: 1fr; }
  .download-meta { grid-template-columns: 1fr; }
  .download-shell { padding: 24px; border-radius: 24px; }
  .content-card, .article-content { padding: 24px; }
  .article-content table { display: block; overflow-x: auto; }
  .footer-grid > :first-child { grid-column: auto; }
  .notice { flex-direction: column; }
  .page-hero { padding: 54px 0 48px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
}