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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #F0F4F8;
    color: #263238;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.landing {
    max-width: 480px;
    margin: 0 auto;
    padding: 48px 24px 32px;
}

.hero {
    text-align: center;
    margin-bottom: 40px;
}

.hero-icon {
    font-size: 72px;
    margin-bottom: 16px;
    line-height: 1;
}

.hero h1 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #263238;
}

.hero-desc {
    font-size: 15px;
    color: #78909C;
    line-height: 1.7;
    max-width: 360px;
    margin: 0 auto;
}

/* Features */
.features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 40px;
}

.feature-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 20px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.05);
}

.feature-icon {
    font-size: 32px;
    flex-shrink: 0;
    line-height: 1;
}

.feature-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    color: #263238;
}

.feature-card p {
    font-size: 13px;
    color: #78909C;
    line-height: 1.5;
}

/* QR section */
.qr-section {
    text-align: center;
    margin-bottom: 32px;
}

.qr-placeholder {
    display: inline-block;
    padding: 32px 40px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.05);
}

.qr-label {
    font-size: 16px;
    font-weight: 600;
    color: #263238;
    margin-bottom: 8px;
}

.qr-hint {
    font-size: 12px;
    color: #78909C;
}

/* Footer */
.footer {
    text-align: center;
}

.footer p {
    font-size: 13px;
    color: #90A4AE;
}