:root {
    --site-bg: #f4f7f6;
    --site-surface: #ffffff;
    --site-text: #24323b;
    --site-muted: #60717b;
    --site-border: #dce6eb;
    --site-input: #ffffff;
    --site-notice-bg: #e8f7f3;
    --site-notice-text: #31564e;
    --site-primary: #247fb6;
    --site-accent: #18a98d;
    --site-focus: #9b5de5;
    --site-shadow: rgba(25, 46, 58, 0.10);
    color-scheme: light;
}

html[data-theme="dark"] {
    --site-bg: #101820;
    --site-surface: #18232d;
    --site-text: #edf3f6;
    --site-muted: #b3c2ca;
    --site-border: #3a4b57;
    --site-input: #111b23;
    --site-notice-bg: #15372f;
    --site-notice-text: #c8eee5;
    --site-primary: #6db8e8;
    --site-accent: #43d5b7;
    --site-focus: #d4a7ff;
    --site-shadow: rgba(0, 0, 0, 0.28);
    color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--site-bg); color: var(--site-text); font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--site-primary); }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--site-focus); outline-offset: 3px; }
.skip-link { position: fixed; z-index: 1000; top: 8px; left: 8px; transform: translateY(-150%); padding: 10px 14px; border-radius: 6px; background: var(--site-surface); color: var(--site-text); }
.skip-link:focus { transform: translateY(0); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.site-header { width: 100%; min-height: 72px; border-bottom: 1px solid var(--site-border); background: color-mix(in srgb, var(--site-surface) 94%, transparent); }
.site-header-inner { width: min(1180px, calc(100% - 40px)); min-height: 72px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.site-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--site-text); font-size: 1.05rem; font-weight: 750; text-decoration: none; white-space: nowrap; }
.brand-mark { width: 36px; height: 36px; display: inline-grid; place-items: center; border-radius: 10px; background: var(--site-primary); color: #fff; font-size: .78rem; letter-spacing: .04em; }
.site-header-actions { display: flex; align-items: center; gap: 12px; }
.theme-control select, .site-menu summary { min-height: 42px; padding: 8px 11px; border: 1px solid var(--site-border); border-radius: 9px; background: var(--site-surface); color: var(--site-text); font: inherit; font-weight: 650; }
.site-menu summary { display: none; cursor: pointer; list-style-position: inside; }
.site-menu:not([open]) > .site-nav { display: flex; }
.site-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.site-nav a { padding: 9px 12px; border-radius: 8px; color: var(--site-muted); font-weight: 650; text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { background: var(--site-surface); color: var(--site-text); }
.site-main { width: min(1120px, calc(100% - 40px)); min-height: 65vh; margin: 0 auto; padding: 72px 0 88px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); align-items: center; gap: 56px; }
.eyebrow { margin: 0 0 14px; color: var(--site-accent); font-size: .88rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1 { max-width: 850px; margin: 0 0 22px; font-size: clamp(2.3rem, 6vw, 4.8rem); line-height: 1.02; letter-spacing: -.04em; }
.lead { max-width: 720px; color: var(--site-muted); font-size: clamp(1.1rem, 2vw, 1.3rem); line-height: 1.65; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button-link { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 11px 18px; border: 1px solid var(--site-primary); border-radius: 9px; background: var(--site-primary); color: #fff; font-weight: 750; text-decoration: none; }
.button-link.secondary { background: transparent; color: var(--site-primary); }
.hero-panel, .content-card, .project-card { border: 1px solid var(--site-border); border-radius: 18px; background: var(--site-surface); box-shadow: 0 14px 36px var(--site-shadow); }
.hero-panel { padding: 28px; }
.hero-panel ul { margin: 18px 0 0; padding-left: 22px; color: var(--site-muted); line-height: 1.8; }
.section-heading { margin: 72px 0 24px; font-size: clamp(1.7rem, 3vw, 2.4rem); }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.project-card, .content-card { padding: 26px; }
.project-card h2, .project-card h3, .content-card h1, .content-card h2 { margin-top: 0; }
.project-card p, .content-card p, .content-card li { color: var(--site-muted); line-height: 1.7; }
.status { display: inline-flex; padding: 5px 9px; border-radius: 999px; background: color-mix(in srgb, var(--site-accent) 15%, transparent); color: var(--site-accent); font-size: .8rem; font-weight: 800; }
.notice { padding: 18px 20px; border-left: 4px solid var(--site-accent); border-radius: 8px; background: color-mix(in srgb, var(--site-accent) 10%, var(--site-surface)); color: var(--site-muted); }
.closing-card { margin-top: 56px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.closing-card h2 { margin-bottom: 8px; }
.closing-card p:last-child { margin-bottom: 0; }
.site-footer { padding: 28px max(20px, calc((100% - 1180px) / 2)); display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid var(--site-border); color: var(--site-muted); }
.site-footer nav { display: flex; gap: 18px; }

@media (max-width: 760px) {
    .site-header-inner { width: min(100% - 28px, 1180px); min-height: 64px; flex-wrap: wrap; padding: 10px 0; }
    .site-brand > span:last-child { max-width: 180px; overflow: hidden; text-overflow: ellipsis; }
    .site-header-actions { margin-left: auto; }
    .theme-control select { max-width: 92px; }
    .site-menu { position: relative; }
    .site-menu summary { display: inline-flex; align-items: center; }
    .site-menu:not([open]) > .site-nav { display: none; }
    .site-menu[open] .site-nav { position: absolute; z-index: 50; top: calc(100% + 8px); right: 0; width: min(290px, calc(100vw - 28px)); padding: 10px; display: grid; border: 1px solid var(--site-border); border-radius: 12px; background: var(--site-surface); box-shadow: 0 16px 34px var(--site-shadow); }
    .site-nav a { width: 100%; text-align: left; }
    .site-main { width: min(100% - 28px, 1120px); padding: 44px 0 64px; }
    .hero { grid-template-columns: 1fr; gap: 30px; }
    h1 { font-size: clamp(2.15rem, 11vw, 3.4rem); }
    .closing-card { align-items: stretch; flex-direction: column; }
    .site-footer { align-items: flex-start; flex-direction: column; }
}

@media print {
    .site-header, .site-footer, .skip-link { display: none !important; }
}