*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --navy:         #1a3560;
    --navy-dark:    #122444;
    --navy-light:   #254878;
    --red:          #cc0a2b;
    --red-dark:     #a00820;
    --white:        #ffffff;
    --off-white:    #f0f4fa;
    --text:         #1a2a40;
    --text-light:   #4a5a70;
    --border:       #c8d4e8;
    --radius:       8px;
    --shadow:       0 4px 18px rgba(26,53,96,0.13);
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--off-white);
    color: var(--text);
    min-height: 100vh;
}

header {
    background: var(--navy);
    color: var(--white);
    padding: 0;
    box-shadow: 0 3px 12px rgba(18,36,68,0.25);
    position: relative;
    overflow: hidden;
}

header::after {
    content: '';
    display: block;
    height: 6px;
    background: var(--red);
}

.header-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 32px 24px 26px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.header-inner h1 {
    font-size: 2.1rem;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    text-align: center;
    line-height: 1.15;
}

.header-inner h1 span {
    color: var(--red);
}

.header-inner .subtitle {
    font-size: 1rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    opacity: 0.85;
    text-align: center;
    font-weight: 400;
}

.contact-email {
    margin-top: 14px;
    background: rgba(255,255,255,0.10);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--radius);
    padding: 9px 22px;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-email a {
    color: var(--white);
    font-weight: 600;
    text-decoration: none;
    word-break: break-all;
}

.contact-email a:hover {
    color: #ffd0d8;
    text-decoration: underline;
}

.contact-email .label {
    opacity: 0.7;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.newsletter-section {
    background: var(--white);
    border-bottom: 4px solid var(--red);
    padding: 32px 24px;
    box-shadow: 0 2px 8px rgba(26,53,96,0.07);
}

.newsletter-inner {
    max-width: 900px;
    margin: 0 auto;
}

.newsletter-inner h2 {
    font-size: 1.2rem;
    color: var(--navy);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 700;
}

.newsletter-inner p {
    color: var(--text-light);
    font-size: 0.97rem;
    margin-bottom: 18px;
}

.newsletter-form {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.newsletter-form input[type="email"] {
    flex: 0 1 280px;
    padding: 10px 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
    color: var(--text);
    background: var(--off-white);
    max-width: 100%;
}

.newsletter-form input[type="email"]:focus {
    border-color: var(--navy);
    background: var(--white);
}

.newsletter-form input[type="email"].invalid {
    border-color: var(--red);
}

.newsletter-form input[type="email"].valid {
    border-color: #1a8a3a;
}

.newsletter-form button {
    padding: 10px 22px;
    background: var(--navy);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s;
    white-space: nowrap;
}

.newsletter-form button:disabled {
    background: #8a9ab8;
    cursor: not-allowed;
    opacity: 0.65;
}

.newsletter-form button:not(:disabled):hover {
    background: var(--red);
}

.form-hint {
    font-size: 0.83rem;
    color: var(--text-light);
    margin-top: 7px;
    width: 100%;
}

.form-hint.error {
    color: var(--red);
}

.form-hint.success {
    color: #1a8a3a;
    font-weight: 600;
}

.content-section {
    max-width: 900px;
    margin: 32px auto;
    padding: 0 24px 40px;
}

.content-section h2 {
    font-size: 1rem;
    color: var(--navy);
    margin-bottom: 14px;
    border-bottom: 3px solid var(--red);
    padding-bottom: 7px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
}

.frame-wrapper {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    min-height: 500px;
    border-top: 4px solid var(--navy);
}

.frame-wrapper iframe {
    width: 100%;
    min-height: 500px;
    border: none;
    display: block;
}

footer {
    background: var(--navy-dark);
    color: rgba(255,255,255,0.6);
    text-align: center;
    padding: 18px;
    font-size: 0.85rem;
    margin-top: 20px;
    letter-spacing: 0.03em;
    border-top: 3px solid var(--red);
}

@media (max-width: 600px) {
    .header-inner h1 {
        font-size: 1.4rem;
    }
    .newsletter-form {
        flex-direction: column;
        align-items: stretch;
    }
    .newsletter-form input[type="email"] {
        flex: 1 1 auto;
        width: 100%;
    }
    .newsletter-form button {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .newsletter-section {
        padding: 24px 16px;
    }
    .newsletter-inner h2 {
        font-size: 1.1rem;
    }
    .newsletter-inner p {
        font-size: 0.9rem;
    }
}