:root {
    --canvas: #0F1C24;
    --surface: #1E3748;
    --surface-hover: #284B63;
    --brand: #559DA1;
    --brand-light: #7FB6BA;
    --brand-dark: #468288;
    --brand-muted: #3C6E71;
    --brand-subtle: #2F5759;
    --brand-faint: #224042;
    --text-primary: #F4F8FB;
    --text-secondary: #D0E1EC;
    --text-tertiary: #A5C5DA;
    --text-muted: #75A6C7;
    --border-light: #1E3748;
    --border-strong: rgba(165, 197, 218, 0.4);
    --white: #FFFFFF;
    --on-brand: #FFFFFF;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--canvas);
    color: var(--text-primary);
    font-family: Charter, Georgia, Palatino, "Times New Roman", serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    display: flex;
    justify-content: center;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 100%;
    max-width: 720px; /* Constrained for simpler landing pages as per DESIGN.md */
    padding: 80px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-title {
    font-family: Charter, Georgia, Palatino, "Times New Roman", serif;
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 500;
    line-height: 1.1;
    margin: 0 0 24px 0;
    color: var(--text-primary);
}

.hero-subtitle {
    font-family: Charter, Georgia, Palatino, "Times New Roman", serif;
    font-size: 22px; /* body-lg */
    font-weight: 400;
    line-height: 1.4;
    margin: 0 0 48px 0;
    color: var(--text-secondary);
    max-width: 600px; /* Constrain measure to ~65 characters */
}

.form-container {
    width: 100%;
    min-height: 540px;
    background-color: var(--surface);
    border: 1px solid var(--border-strong);
    border-radius: 12px; /* rounded.lg */
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0,0,0,0.05); /* Whisper shadow for featured elements */
}

@media (max-width: 375px) {
    .container {
        padding: 48px 16px;
    }
    .hero-title {
        font-size: 2.5rem;
    }
}