body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #fff5f7;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

a {
    color: #ff859b;
    text-decoration: none;
}

.card {
    width: 100%;
    max-width: 720px;
    background: #ffffff;
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.icon {
    width: 56px;
    height: 56px;
    background: #ffe1e8;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 28px;
}

h1 {
    font-size: 20px;
    text-align: center;
    margin: 0 0 14px;
    color: #333;
    line-height: 1.4;
}

.highlight {
    color: #ff4d6d;
    font-weight: 600;
}

.label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fff0f4;
    color: #ff4d6d;
    padding: 6px 10px;
    border-radius: 12px;
    font-size: 13px;
    margin-bottom: 8px;
}

.message {
    background: #f5f6f8;
    border-radius: 14px;
    padding: 14px;
    font-size: 14px;
    color: #333;
    line-height: 1.4;
    margin-bottom: 14px;
}

.timer {
    text-align: center;
    font-size: 13px;
    color: #666;
    margin-bottom: 16px;
}

.timer span {
    color: #ff4d6d;
    font-weight: 600;
}

.pay-btn {
    width: 100%;
    border: none;
    background: linear-gradient(135deg, #ff5f7e, #ff3d68);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    padding: 14px;
    border-radius: 14px;
    cursor: pointer;
    transition: transform .1s ease, box-shadow .1s ease;
    box-shadow: 0 6px 14px rgba(255,77,109,0.35);
}

.pay-btn:active {
    transform: translateY(1px);
    box-shadow: 0 3px 8px rgba(255,77,109,0.35);
}

.terms {
    display: grid;
    gap: 5px;
    font-size: 11px;
    color: #999;
    margin-top: 14px;
    line-height: 1.4;
}

.terms input {
    vertical-align: middle;
    margin-right: 6px;
}

.letter {
    background: linear-gradient(180deg, #ffe8f0, #ffecec);
    border-radius: 16px;
    padding: 12px;
    margin-bottom: 16px;
    position: relative;
    box-shadow: inset 0 0 0 1px #ffe1ea;
}

.letter::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 24px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 10px solid #ffffff;
}

.letter-header {
    display: inline-block;
    color: #ff4d6d;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 999px;
    margin-bottom: 10px;
}

.letter-body {
    background: white;
    border-radius: 12px;
    padding: 14px;
    font-size: 14px;
    color: #333;
    line-height: 1.45;
}