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

:root {
    --green: #34C759;
    --green-dark: #2AA748;
    --bg: #FAFAFA;
    --text: #1A1A1A;
    --text-secondary: #666;
    --card-bg: #FFF;
    --border: #E5E5E5;
    --max-width: 640px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Nav */
header {
    position: sticky;
    top: 0;
    background: rgba(250, 250, 250, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    z-index: 10;
}

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 18px;
    color: var(--green-dark);
}

.lang-switch {
    color: var(--green-dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 6px 12px;
    border: 1px solid var(--green);
    border-radius: 20px;
    transition: background 0.2s;
}

.lang-switch:hover {
    background: var(--green);
    color: #FFF;
}

/* Main */
main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero */
.hero {
    text-align: center;
    padding: 60px 0 48px;
}

.hero-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.hero-logo {
    width: 96px;
    height: 96px;
    border-radius: 22px;
    margin-bottom: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.hero h1 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 12px;
}

.subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 28px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    background: var(--green);
    color: #FFF;
    font-weight: 600;
    font-size: 16px;
    padding: 14px 32px;
    border-radius: 12px;
    text-decoration: none;
    transition: background 0.2s;
}

.cta-button:hover {
    background: var(--green-dark);
}

.cta-note {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* Features */
.features {
    padding: 48px 0;
}

.features h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}

.feature-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.feature-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Approach */
.approach {
    padding: 48px 0;
    text-align: center;
}

.approach h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.approach p {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
}

.approach-note {
    font-size: 13px !important;
    margin-top: 16px !important;
    opacity: 0.8;
}

/* Privacy */
.privacy {
    padding: 48px 0;
    border-top: 1px solid var(--border);
}

.privacy h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.privacy-date {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.privacy h3 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 8px;
}

.privacy p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.privacy ul {
    list-style: none;
    padding: 0;
}

.privacy ul li {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 4px 0 4px 20px;
    position: relative;
}

.privacy ul li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--text-secondary);
}

.privacy a {
    color: var(--green-dark);
}

/* Support */
.support {
    padding: 48px 0;
    border-top: 1px solid var(--border);
}

.support h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.support-intro {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.support-success {
    background: rgba(52, 199, 89, 0.12);
    border: 1px solid var(--green);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 20px;
}

.support-success p {
    font-size: 14px;
    color: var(--green-dark);
    font-weight: 500;
}

.support-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.support-form label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
}

.support-form input[type="text"],
.support-form input[type="email"],
.support-form textarea {
    font: inherit;
    font-size: 15px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text);
    resize: vertical;
}

.support-form input:focus,
.support-form textarea:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(52, 199, 89, 0.15);
}

.support-form button {
    align-self: flex-start;
    background: var(--green);
    color: #fff;
    font: inherit;
    font-weight: 600;
    font-size: 15px;
    border: none;
    border-radius: 20px;
    padding: 10px 22px;
    cursor: pointer;
    transition: background 0.2s;
}

.support-form button:hover {
    background: var(--green-dark);
}

.honeypot {
    position: absolute !important;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    margin-top: 24px;
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 24px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 16px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--text);
}

/* Tablet+ */
@media (min-width: 480px) {
    .feature-grid {
        grid-template-columns: 1fr 1fr;
    }

    .hero h1 {
        font-size: 32px;
    }
}