* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f7fb;
    color: #1f2937;
    line-height: 1.75;
    font-size: 16px;
}

a {
    color: #166534;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.topbar {
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    max-width: 1160px;
    margin: auto;
    padding: 13px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #14532d;
    text-decoration: none;
}

.brand img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 10px;
    background: #ffffff;
}

.brand strong {
    display: block;
    font-size: 18px;
    line-height: 1.2;
}

.brand small {
    display: block;
    font-size: 12px;
    color: #64748b;
    margin-top: 2px;
}

.menu {
    display: flex;
    align-items: center;
    gap: 18px;
    font-size: 14px;
    font-weight: 700;
}

.menu a {
    color: #374151;
}

.menu a:hover {
    color: #166534;
    text-decoration: none;
}

.nav-toggle {
    display: none;
    border: 0;
    background: #14532d;
    color: #ffffff;
    border-radius: 10px;
    padding: 9px 12px;
    font-size: 20px;
    cursor: pointer;
}

.hero {
    background:
        radial-gradient(circle at top left, rgba(255,255,255,.22), transparent 28%),
        linear-gradient(135deg, #14532d, #16a34a 55%, #15803d);
    color: #ffffff;
    padding: 74px 18px;
    text-align: center;
}

.hero-inner {
    max-width: 940px;
    margin: auto;
}

.hero-logo {
    width: 112px;
    height: 112px;
    background: #ffffff;
    border-radius: 22px;
    padding: 10px;
    margin: 0 auto 20px;
    box-shadow: 0 16px 36px rgba(0,0,0,.18);
}

.hero-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.eyebrow {
    display: inline-block;
    background: rgba(255,255,255,.16);
    border: 1px solid rgba(255,255,255,.25);
    padding: 7px 14px;
    border-radius: 999px;
    margin: 0 0 16px;
    font-weight: 800;
    font-size: 13px;
}

.hero h1 {
    margin: 0 0 16px;
    font-size: 40px;
    line-height: 1.22;
    letter-spacing: -.3px;
}

.hero-text {
    max-width: 780px;
    margin: auto;
    font-size: 17px;
    opacity: .96;
}

.layout {
    max-width: 1160px;
    margin: 30px auto;
    padding: 0 18px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
    align-items: start;
}

.single {
    max-width: 920px;
    margin: 30px auto;
    padding: 0 18px;
}

.card,
.side-box {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, .06);
}

.card {
    padding: 30px;
    margin-bottom: 24px;
}

.card h1,
.card h2,
.card h3 {
    color: #14532d;
    line-height: 1.3;
}

.card h1 {
    font-size: 34px;
    margin: 0 0 18px;
}

.card h2 {
    font-size: 27px;
    margin: 0 0 14px;
}

.card h3 {
    font-size: 21px;
    margin-top: 22px;
}

.card p {
    margin: 0 0 16px;
}

.badge {
    display: inline-block;
    background: #dcfce7;
    color: #166534;
    padding: 7px 13px;
    border-radius: 999px;
    font-weight: 800;
    font-size: 13px;
    margin-bottom: 14px;
}

.notice {
    background: #fff7ed;
    border-left: 5px solid #f97316;
    color: #7c2d12;
    padding: 16px 18px;
    border-radius: 12px;
    margin: 20px 0;
}

.toc {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 16px;
    padding: 20px;
    margin: 22px 0;
}

.toc strong {
    display: block;
    color: #14532d;
    margin-bottom: 10px;
}

.toc ol {
    margin: 0;
    padding-left: 22px;
}

.toc li {
    margin: 7px 0;
}

.sidebar {
    position: sticky;
    top: 88px;
}

.side-box {
    padding: 22px;
    margin-bottom: 22px;
}

.side-box h3 {
    color: #14532d;
    margin: 0 0 10px;
    font-size: 20px;
}

.side-box p {
    margin: 0;
    font-size: 15px;
}

.side-box ul {
    padding-left: 19px;
    margin: 0;
}

.side-box li {
    margin: 7px 0;
}

.warning {
    background: #fff7ed;
    border-color: #fed7aa;
}

.contact-box {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    padding: 18px;
    border-radius: 14px;
    margin: 18px 0;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.footer {
    background: #0f172a;
    color: #d1d5db;
    margin-top: 38px;
    padding: 32px 18px;
}

.footer-inner {
    max-width: 1160px;
    margin: auto;
    display: flex;
    align-items: center;
    gap: 16px;
    justify-content: center;
    text-align: left;
}

.footer img {
    width: 58px;
    height: 58px;
    object-fit: contain;
    background: #ffffff;
    padding: 7px;
    border-radius: 12px;
}

.footer strong {
    color: #ffffff;
}

.footer p {
    margin: 4px 0;
    max-width: 720px;
}

.footer small {
    color: #94a3b8;
}

@media (max-width: 900px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

    .hero h1 {
        font-size: 31px;
    }
}

@media (max-width: 700px) {
    .nav {
        align-items: flex-start;
    }

    .nav-toggle {
        display: block;
    }

    .menu {
        display: none;
        position: absolute;
        left: 18px;
        right: 18px;
        top: 78px;
        background: #ffffff;
        border: 1px solid #e5e7eb;
        border-radius: 16px;
        padding: 14px;
        flex-direction: column;
        align-items: flex-start;
        box-shadow: 0 15px 35px rgba(15, 23, 42, .12);
    }

    .menu-open .menu {
        display: flex;
    }

    .hero {
        padding: 48px 18px;
    }

    .hero-logo {
        width: 92px;
        height: 92px;
    }

    .hero h1 {
        font-size: 27px;
    }

    .hero-text {
        font-size: 16px;
    }

    .card {
        padding: 22px;
    }

    .card h1 {
        font-size: 28px;
    }

    .card h2 {
        font-size: 23px;
    }

    .footer-inner {
        text-align: center;
        flex-direction: column;
    }
}