:root {
    --bg: #f4f1ea;
    --paper: #fffdf8;
    --ink: #1f2933;
    --ink-soft: #4d5b6a;
    --brand: #0b5f6d;
    --brand-2: #187f8f;
    --accent: #cc6f32;
    --border: #d9d4c7;
    --ok: #2c7a3f;
    --warn: #9a5b00;
    --bad: #a12828;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Source Sans 3", "Segoe UI", Tahoma, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 0 0, #f8f5ef 0, #f4f1ea 42%),
        linear-gradient(170deg, rgba(11, 95, 109, 0.08), rgba(204, 111, 50, 0.07));
}

.site-wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 24px 18px 40px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.badge {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    background: #0b5f6d14;
    color: var(--brand);
    font-weight: 700;
    letter-spacing: 0.03em;
    font-size: 0.78rem;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-links a,
.btn {
    text-decoration: none;
    border: 1px solid var(--border);
    background: var(--paper);
    color: var(--ink);
    padding: 8px 12px;
    border-radius: 10px;
    font-weight: 600;
}

.nav-links a:hover,
.btn:hover {
    border-color: var(--brand);
    color: var(--brand);
}

.hero {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 20px 35px #0000000d;
}

.hero h1 {
    margin: 0 0 10px;
    line-height: 1.1;
    font-size: clamp(1.75rem, 4.6vw, 2.8rem);
}

.hero p {
    margin: 0;
    color: var(--ink-soft);
    font-size: 1.04rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 14px;
    margin-top: 20px;
}

.card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
}

.card h2,
.card h3 {
    margin-top: 0;
}

.small {
    color: var(--ink-soft);
    font-size: 0.93rem;
}

.kicker {
    color: var(--brand);
    font-weight: 700;
    margin: 0 0 6px;
    font-size: 0.82rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.module-list {
    margin: 8px 0 0;
    padding-left: 18px;
}

.module-list li {
    margin-bottom: 6px;
}

.section-title {
    margin: 24px 0 8px;
    font-size: 1.3rem;
}

.form-wrap {
    margin-top: 18px;
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
}

.field {
    margin-bottom: 12px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

input[type="text"],
select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    font-size: 1rem;
}

.btn-primary {
    border-color: var(--brand);
    background: var(--brand);
    color: #fff;
}

.btn-primary:hover {
    background: var(--brand-2);
    color: #fff;
}

.notice {
    border-radius: 10px;
    padding: 10px 12px;
    margin-bottom: 14px;
}

.notice.ok {
    border: 1px solid #9fd8ab;
    background: #edf8f0;
    color: var(--ok);
}

.notice.warn {
    border: 1px solid #e3cd98;
    background: #fff7e6;
    color: var(--warn);
}

.notice.bad {
    border: 1px solid #e3a3a3;
    background: #fff0f0;
    color: var(--bad);
}

.quiz-choice {
    display: block;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 8px;
}

.quiz-choice input {
    margin-right: 8px;
}

.explain {
    margin-top: 6px;
    color: var(--ink-soft);
}

.table-wrap {
    overflow-x: auto;
    margin-top: 10px;
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: 12px;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

th,
td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 0.92rem;
}

thead th {
    background: #f2f8fa;
    color: var(--ink);
    font-weight: 700;
}

.pill {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.pill-ok {
    color: #1c6b34;
    background: #e8f7ee;
    border: 1px solid #9fd8ab;
}

.pill-warn {
    color: #8d5700;
    background: #fff4de;
    border: 1px solid #e3cd98;
}

.pill-bad {
    color: #8d1f1f;
    background: #ffe8e8;
    border: 1px solid #e3a3a3;
}

footer {
    margin-top: 24px;
    color: var(--ink-soft);
    font-size: 0.92rem;
}

@media (max-width: 640px) {
    .hero,
    .card,
    .form-wrap {
        border-radius: 12px;
    }
}