:root {
    color: #172033;
    background: #f4f7fb;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    line-height: 1.65;
    background:
        radial-gradient(circle at top left, #dff6e9, transparent 34rem),
        radial-gradient(circle at top right, #e2eeff, transparent 34rem),
        #f4f7fb;
}

header, main, footer { width: min(960px, calc(100% - 32px)); margin: 0 auto; }
header { padding: 44px 0 24px; }

nav { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-bottom: 34px; }
nav a { color: #245b9b; font-weight: 700; text-decoration: none; }
nav a[aria-current="page"] { color: #176b4b; }

.lang-switch { margin-left: auto; display: flex; gap: 12px; }
.lang-switch a { font-weight: 700; }
.lang-switch a[aria-current="true"] { color: #176b4b; text-decoration: underline; }

.hero, article, .card {
    padding: clamp(24px, 5vw, 44px);
    border: 1px solid #dce4ed;
    border-radius: 22px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 18px 48px rgba(20, 33, 61, .10);
}

.hero { margin-bottom: 22px; }

h1 { margin: 0; font-size: clamp(2rem, 6vw, 3.2rem); line-height: 1.1; }
h2 { margin: 0 0 12px; font-size: 1.4rem; }
h3 { margin: 0 0 8px; font-size: 1.1rem; }
p { margin: 0 0 14px; }
ul, ol { padding-left: 24px; }
li + li { margin-top: 8px; }
section + section { margin-top: 32px; padding-top: 28px; border-top: 1px solid #dce4ed; }
a { color: #245b9b; }

.button {
    display: inline-block;
    padding: 12px 18px;
    border-radius: 12px;
    color: #fff;
    background: #176b4b;
    font-weight: 750;
    text-decoration: none;
}

.tag {
    display: inline-block;
    margin-bottom: 16px;
    padding: 6px 14px;
    border-radius: 999px;
    background: #e8f7ef;
    color: #12633f;
    font-weight: 700;
    font-size: .85rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
    margin-top: 8px;
}

.grid .card { padding: 24px; box-shadow: none; }

details.faq-item {
    padding: 18px 22px;
    border: 1px solid #dce4ed;
    border-radius: 16px;
    background: rgba(255, 255, 255, .96);
    margin-bottom: 14px;
}

details.faq-item summary {
    cursor: pointer;
    font-weight: 700;
    font-size: 1.05rem;
}

details.faq-item p { margin-top: 12px; margin-bottom: 0; }

footer { padding: 30px 0 44px; color: #526175; text-align: center; }
footer nav { justify-content: center; margin-bottom: 12px; }