* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    color: #111827;
    background: #ededed;
}

.landing-shell {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    background: #d9dde6;
}

.phone-page {
    width: min(100%, 430px);
    min-height: 100vh;
    overflow-x: hidden;
    background: var(--page-bg, #ededed);
}

.banner {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.banner img,
.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.chat-row {
    display: flex;
    gap: 8px;
    padding: 0 8px;
    margin-top: 16px;
}

.chat-row.user {
    justify-content: flex-end;
}

.avatar {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: 2px;
    overflow: hidden;
    background: #fff;
}

.bubble {
    max-width: calc(100% - 48px);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 15px;
    line-height: 1.55;
    word-break: break-word;
    position: relative;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.bubble.bot {
    background: var(--bot-bubble, #fff);
}

.bubble.user {
    background: var(--user-bubble, #fff);
}

.bubble p {
    margin: 0;
}

.answers {
    display: flex;
    flex-wrap: wrap;
    margin-top: 8px;
    gap: 8px;
}

.answer-btn {
    max-width: 100%;
    border: 0;
    border-radius: 6px;
    padding: 7px 10px;
    font-size: 14px;
    color: #fff;
    background: var(--answer-color, #3d82f6);
    cursor: pointer;
    text-align: left;
}

.answer-btn:disabled {
    cursor: default;
    opacity: 0.65;
}

.hidden {
    display: none !important;
}

.cta-wrap {
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 40px 16px;
}

.target-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 240px;
    min-height: 42px;
    border-radius: 999px;
    background: var(--button-color, #67d377);
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    animation: pulse 1.2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.08);
    }
}

.empty-page {
    padding: 40px 20px;
    text-align: center;
}