:root {
    color-scheme: light dark;
    --ink: #171225;
    --muted: #5c5668;
    --brand: #190034;
    --brand-2: #34145d;
    --accent: #12a88a;
    --accent-strong: #08745f;
    --line: #e7deef;
    --paper: #fff;
    --surface: #fff;
    --wash: #f7f4fa;
    --warm: #fff6df;
    --danger: #8c2f24;
    --shadow: 0 18px 46px rgba(25, 0, 52, .12);
    --radius: 8px;
    --wrap: min(1120px, calc(100% - 32px));
    --section: clamp(2rem, 4.5vw, 3.4rem);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--ink);
    background: var(--paper);
    line-height: 1.55;
}

a {
    color: var(--accent-strong);
}

.skip {
    position: absolute;
    left: -999px;
    top: 1rem;
    z-index: 10;
    padding: .75rem 1rem;
    color: #fff;
    background: var(--brand);
}

.skip:focus {
    left: 1rem;
}

.site-header {
    position: relative;
    overflow: hidden;
    color: #fff;
    background:
        linear-gradient(135deg, rgba(25, 0, 52, .98), rgba(47, 20, 86, .92)),
        radial-gradient(circle at top right, rgba(18, 168, 138, .5), transparent 38%);
}

.site-header::after {
    content: "";
    position: absolute;
    inset: auto -8rem -10rem auto;
    width: 34rem;
    height: 34rem;
    border: 1px solid rgba(116, 241, 213, .22);
    border-radius: 50%;
    transform: rotate(-12deg);
}

nav,
.hero,
.content,
footer > div {
    width: var(--wrap);
    margin: 0 auto;
}

nav {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .75rem 0;
    font-size: .95rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    color: #fff;
    font-weight: 800;
    text-decoration: none;
}

.brand img {
    width: clamp(4.5rem, 9vw, 7rem);
    height: auto;
    flex: 0 0 auto;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: .75rem 1rem;
}

.nav-links a {
    color: rgba(255, 255, 255, .86);
    text-decoration: none;
}

.hero {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(280px, .88fr);
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: center;
    min-height: 540px;
    padding: clamp(2.2rem, 5.5vw, 4rem) 0 clamp(2.5rem, 6vw, 4.5rem);
}

.eyebrow {
    margin: 0 0 .75rem;
    color: var(--accent);
    font-weight: 800;
    text-transform: uppercase;
    font-size: .8rem;
    letter-spacing: .08em;
}

.site-header .eyebrow {
    color: #bdf4e8;
}

h1,
h2,
h3 {
    line-height: 1.08;
    letter-spacing: 0;
}

h1 {
    max-width: 760px;
    margin: 0;
    font-size: clamp(2.4rem, 7vw, 5.6rem);
}

h2 {
    margin: 0 0 1rem;
    font-size: clamp(1.9rem, 4vw, 3.1rem);
}

h3 {
    margin: 0 0 .55rem;
    font-size: 1.18rem;
}

p {
    margin: 0 0 1rem;
}

.lede {
    max-width: 700px;
    margin-top: 1.2rem;
    color: rgba(255, 255, 255, .86);
    font-size: clamp(1.05rem, 2.2vw, 1.35rem);
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: .8rem;
    margin-top: 1.5rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: .8rem 1.15rem;
    border: 2px solid transparent;
    border-radius: var(--radius);
    color: var(--brand);
    background: #fff;
    font-weight: 800;
    text-decoration: none;
    text-align: center;
}

.button.primary {
    color: #071b17;
    background: #74f1d5;
    box-shadow: 0 12px 32px rgba(18, 168, 138, .22);
}

.button.secondary {
    color: #fff;
    border-color: rgba(255, 255, 255, .42);
    background: transparent;
}

.button.dark {
    color: #fff;
    background: var(--brand);
}

.proof {
    display: grid;
    gap: .9rem;
    padding: clamp(1.1rem, 3vw, 1.5rem);
    border: 1px solid rgba(255, 255, 255, .24);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .1);
    backdrop-filter: blur(12px);
    box-shadow: 0 24px 64px rgba(0, 0, 0, .2);
}

.code {
    display: block;
    padding: 1rem;
    border: 1px dashed rgba(255, 255, 255, .5);
    border-radius: var(--radius);
    color: #fff;
    background: rgba(0, 0, 0, .22);
    font: 800 1.45rem/1.2 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    overflow-wrap: anywhere;
}

.proof p {
    margin: 0;
    color: rgba(255, 255, 255, .82);
}

.business-bonus {
    display: grid;
    gap: .2rem;
    padding: .95rem;
    border: 1px solid rgba(116, 241, 213, .48);
    border-radius: var(--radius);
    color: #071b17;
    background: #74f1d5;
}

.business-bonus strong,
.business-bonus span {
    display: block;
}

.quick {
    width: var(--wrap);
    margin: 0 auto;
    transform: translateY(-1.25rem);
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--line);
    box-shadow: var(--shadow);
}

.quick div {
    padding: 1.2rem;
    background: var(--surface);
}

.quick strong {
    display: block;
    color: var(--brand);
    font-size: 1.45rem;
}

.content {
    padding: var(--section) 0;
}

.breadcrumb {
    margin: 0 0 1rem;
    color: var(--muted);
    font-size: .95rem;
}

.breadcrumb a {
    font-weight: 800;
}

.quick + .content {
    padding-top: calc(var(--section) - 1.25rem);
}

.band {
    background: var(--wash);
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
    padding: 1.35rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: 0 10px 26px rgba(25, 0, 52, .05);
}

.card.highlight {
    background: linear-gradient(180deg, var(--surface), var(--wash));
}

.note {
    margin-top: 1rem;
    padding: 1rem;
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    background: #eefbf7;
}

.warning {
    border-left-color: var(--danger);
    background: #fff1ee;
}

.steps {
    counter-reset: step;
    display: grid;
    gap: .8rem;
    margin: 1.4rem 0 0;
    padding: 0;
    list-style: none;
}

.steps li {
    counter-increment: step;
    display: grid;
    grid-template-columns: 42px 1fr;
    gap: .9rem;
    align-items: start;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}

.steps li::before {
    content: counter(step);
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    color: #fff;
    background: var(--brand);
    font-weight: 800;
}

.list {
    padding-left: 1.15rem;
}

.list li {
    margin: .45rem 0;
}

.soft-link {
    margin-top: 1rem;
    color: var(--muted);
    font-size: .95rem;
}

.guide-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.guide-list a {
    display: block;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--ink);
    font-weight: 800;
    text-decoration: none;
}

.guide-list span {
    display: block;
    margin-top: .35rem;
    color: var(--muted);
    font-weight: 500;
}

.article-body {
    max-width: 820px;
}

.article-body h2 {
    margin-top: 2rem;
}

.article-body .note h2 {
    margin-top: 0;
}

.keyword-map {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.keyword-map .card:first-child {
    grid-row: span 2;
}

.tariff-table {
    width: 100%;
    border-collapse: collapse;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}

.tariff-table th,
.tariff-table td {
    padding: .9rem;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

.tariff-table th {
    color: #fff;
    background: var(--brand);
}

.tariff-table tr:last-child td {
    border-bottom: 0;
}

details {
    border-top: 1px solid var(--line);
    padding: 1rem 0;
}

details:last-child {
    border-bottom: 1px solid var(--line);
}

summary {
    cursor: pointer;
    font-weight: 800;
}

footer {
    padding: 2rem 0;
    color: rgba(255, 255, 255, .78);
    background: var(--brand);
    font-size: .95rem;
}

footer a {
    color: #bdf4e8;
}

@media (prefers-color-scheme: dark) {
    :root {
        --ink: #f3eef8;
        --muted: #c8bfd1;
        --brand: #120022;
        --brand-2: #2a104a;
        --accent: #66e5cb;
        --accent-strong: #83f4df;
        --line: #3a284b;
        --paper: #10091a;
        --surface: #191022;
        --wash: #15101d;
        --warm: #251d12;
        --danger: #ff8c79;
        --shadow: 0 18px 46px rgba(0, 0, 0, .34);
    }

    .site-header {
        background:
            linear-gradient(135deg, rgba(12, 0, 25, .98), rgba(30, 12, 54, .94)),
            radial-gradient(circle at top right, rgba(102, 229, 203, .24), transparent 38%);
    }

    .button.primary {
        color: #041814;
    }

    .button.dark {
        color: #071b17;
        background: #74f1d5;
    }

    .quick strong {
        color: var(--accent);
    }

    .note {
        background: #102c27;
    }

    .warning {
        background: #2a1514;
    }

}

@media (max-width: 780px) {
    nav,
    .hero {
        display: block;
    }

    .nav-links {
        justify-content: flex-start;
        margin-top: .8rem;
    }

    .hero {
        min-height: auto;
    }

    .proof {
        margin-top: 1.5rem;
    }

    .quick,
    .grid,
    .two,
    .guide-list,
    .keyword-map {
        grid-template-columns: 1fr;
    }

    .keyword-map .card:first-child {
        grid-row: auto;
    }

    .quick {
        transform: none;
        margin-top: 0;
        border-radius: 0;
        border-left: 0;
        border-right: 0;
        width: 100%;
    }

    .quick + .content {
        padding-top: var(--section);
    }

}