:root { color-scheme: light; --primary: #16a34a; --primary-dark: #15803d; --surface: #f8fafc; --text: #0f172a; --muted: #475569; --border: #e2e8f0; }
* { box-sizing: border-box; }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: linear-gradient(135deg, #f8fafc, #eef2f7); color: var(--text); }
a { color: var(--primary-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid rgba(226, 232, 240, .9); background: rgba(255, 255, 255, .94); backdrop-filter: blur(12px); }
.nav { max-width: 1120px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; }
.brand img { width: 34px; height: 34px; }
.app-link { display: inline-flex; align-items: center; border-radius: 999px; background: var(--primary); color: white; padding: 9px 14px; font-weight: 600; }
.app-link:hover { background: var(--primary-dark); color: white; text-decoration: none; }
main { max-width: 1120px; margin: 0 auto; padding: 32px 20px 56px; }
.hero, .panel, .article { border: 1px solid var(--border); background: white; border-radius: 18px; box-shadow: 0 10px 28px rgba(15, 23, 42, .06); }
.hero { padding: clamp(28px, 5vw, 52px); }
.eyebrow { display: inline-flex; border-radius: 999px; background: #dcfce7; color: #166534; padding: 6px 12px; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
h1 { max-width: 840px; margin: 18px 0 0; font-size: clamp(32px, 5vw, 56px); line-height: 1.05; letter-spacing: 0; }
.intro { max-width: 820px; margin: 18px 0 0; color: var(--muted); font-size: 18px; line-height: 1.7; }
.language-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.language-links a { border: 1px solid var(--border); border-radius: 999px; padding: 7px 11px; color: var(--muted); background: #fff; font-size: 14px; }
.language-links a.active { border-color: #86efac; background: #dcfce7; color: #166534; font-weight: 700; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.panel { margin-top: 22px; padding: 24px; }
.panel h2, .article h2 { margin: 0; font-size: 24px; }
.card { border: 1px solid var(--border); border-radius: 14px; background: var(--surface); padding: 18px; }
.card h3 { margin: 0 0 9px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); line-height: 1.65; }
.contents { margin-top: 16px; }
.contents a { display: block; border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px; background: var(--surface); color: var(--text); font-weight: 600; }
.contents a:hover { border-color: #86efac; background: #f0fdf4; text-decoration: none; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; margin-top: 24px; align-items: start; }
.article { padding: 26px; scroll-margin-top: 92px; }
.article + .article { margin-top: 18px; }
.article p { color: var(--muted); line-height: 1.75; font-size: 16px; }
.steps { margin-top: 18px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); padding: 18px; }
.steps h3 { margin: 0 0 12px; font-size: 13px; color: #64748b; text-transform: uppercase; letter-spacing: .08em; }
ol { margin: 0; padding-left: 22px; }
li { margin: 9px 0; color: #334155; line-height: 1.65; }
aside { position: sticky; top: 88px; }
.support { background: #f0fdf4; border-color: #bbf7d0; }
footer { border-top: 1px solid var(--border); background: white; color: #64748b; }
.footer-inner { max-width: 1120px; margin: 0 auto; padding: 22px 20px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
@media (max-width: 900px) { .grid-2, .grid-3, .layout { grid-template-columns: 1fr; } aside { position: static; } .nav { align-items: flex-start; flex-direction: column; } }