/**
 * Section 13 — Newsletter signup
 */
.tnk-s13 {
    --tnk-red: #E31E24;
    --tnk-black: #0e0e10;
    --tnk-mute: #888;
    --tnk-line: rgba(255,255,255,0.14);
    --tnk-line-soft: rgba(255,255,255,0.08);
    --tnk-ease: cubic-bezier(0.4, 0, 0.2, 1);

    background: var(--tnk-black);
    color: #fff;
    padding: 56px 32px;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    position: relative;
    -webkit-font-smoothing: antialiased;
}
.tnk-s13 *, .tnk-s13 *::before, .tnk-s13 *::after { box-sizing: border-box; }
.tnk-s13__inner {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.tnk-s13__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.7);
    margin-bottom: 14px;
}
.tnk-s13__eyebrow-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--tnk-red);
}
.tnk-s13__title {
    font-size: clamp(28px, 3.6vw, 42px);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.05;
    margin: 0 0 12px;
    color: #fff;
}
.tnk-s13__title em {
    font-style: normal;
    background: #fff;
    color: var(--tnk-black);
    padding: 0 10px;
    border-radius: 3px;
    display: inline-block;
    line-height: 1.0;
    margin: 0 2px;
}
.tnk-s13__sub {
    font-size: 14px;
    line-height: 1.65;
    color: rgba(255,255,255,0.62);
    margin: 0;
    max-width: 460px;
}

.tnk-s13__form-wrap { width: 100%; }
.tnk-s13__form { display: flex; gap: 8px; width: 100%; }
.tnk-s13__input {
    flex: 1;
    background: #fff;
    border: 1.5px solid #fff;
    color: var(--tnk-black);
    padding: 15px 18px;
    font-size: 14px;
    font-family: inherit;
    border-radius: 4px;
    outline: none;
    min-width: 0;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.tnk-s13__input::placeholder { color: rgba(14,14,16,0.4); }
.tnk-s13__input:focus {
    border-color: var(--tnk-red);
    box-shadow: 0 0 0 3px rgba(227,30,36,0.25);
}
.tnk-s13__input.is-invalid {
    border-color: var(--tnk-red);
    box-shadow: 0 0 0 3px rgba(227,30,36,0.35);
}

.tnk-s13__button {
    background: transparent;
    color: #fff;
    border: 1.5px solid #fff;
    padding: 15px 24px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    white-space: nowrap;
    transition: background-color 0.2s var(--tnk-ease), color 0.2s var(--tnk-ease), gap 0.2s var(--tnk-ease);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.tnk-s13__button svg {
    width: 14px;
    height: 14px;
    transition: transform 0.2s var(--tnk-ease);
}
.tnk-s13__button:hover {
    background: #fff;
    color: var(--tnk-black);
    gap: 12px;
}
.tnk-s13__button:hover svg { transform: translateX(2px); }
.tnk-s13__button:active { transform: scale(0.98); }
.tnk-s13__button:focus-visible {
    outline: 3px solid var(--tnk-red);
    outline-offset: 2px;
}

.tnk-s13__trust {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 12px 0 0;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.55);
}
.tnk-s13__trust-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.tnk-s13__trust-item::before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--tnk-red) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center/9px no-repeat;
    flex-shrink: 0;
}

.tnk-s13__error {
    font-size: 12px;
    color: var(--tnk-red);
    margin: 10px 0 0;
    display: none;
    letter-spacing: 0.01em;
    font-weight: 600;
}
.tnk-s13__error.is-visible { display: block; }

.tnk-s13__disclaimer {
    font-size: 10px;
    letter-spacing: 0.04em;
    color: var(--tnk-mute);
    margin: 10px 0 0;
    line-height: 1.5;
}
.tnk-s13__disclaimer a {
    color: rgba(255,255,255,0.85);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

.tnk-s13__success {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: #fff;
    color: var(--tnk-black);
    border-radius: 4px;
    font-size: 14px;
    font-weight: 700;
}
.tnk-s13__success.is-visible { display: flex; }
.tnk-s13__success svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    stroke: var(--tnk-red);
}

.tnk-s13__form-wrap.is-success .tnk-s13__form,
.tnk-s13__form-wrap.is-success .tnk-s13__disclaimer,
.tnk-s13__form-wrap.is-success .tnk-s13__trust,
.tnk-s13__form-wrap.is-success .tnk-s13__error { display: none; }

/* Tablet */
@media (max-width: 1024px) {
    .tnk-s13 { padding: 48px 24px; }
    .tnk-s13__inner { gap: 36px; }
}

/* Mobile */
@media (max-width: 720px) {
    .tnk-s13 { padding: 40px 20px; }
    .tnk-s13__inner {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .tnk-s13__title { font-size: 26px; }
    .tnk-s13__form {
        flex-direction: column;
        gap: 10px;
    }
    .tnk-s13__button { width: 100%; justify-content: center; }
    .tnk-s13__trust { flex-wrap: wrap; gap: 10px; }
}

@media (prefers-reduced-motion: reduce) {
    .tnk-s13__input, .tnk-s13__button, .tnk-s13__button svg { transition: none; }
}