* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
    color: #222;
    background: #f3f3f3;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    min-height: 100dvh;
}

.page {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: max(36px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(28px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
}

.card {
    width: min(100%, 920px);
    background: transparent;
    border-radius: 0;
    padding: 0;
    text-align: center;
    box-shadow: none;
    border: none;
}

.brand {
    margin-top: 12px;
    color: #ff8a2a;
    font-size: clamp(40px, 6.2vw, 62px);
    font-weight: 700;
    line-height: 1.18;
}

.domain-name {
    margin-top: 10px;
    color: #ff8a2a;
    font-size: clamp(34px, 5.2vw, 50px);
    line-height: 1.2;
    font-weight: 700;
    word-break: break-word;
}

.title {
    margin: 38px 0 0;
    color: #222;
    font-size: clamp(18px, 2.15vw, 27px);
    line-height: 1.75;
    font-weight: 700;
}

.action-wrap {
    margin-top: 56px;
}

.enter-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
    min-width: 470px;
    max-width: 100%;
    padding: 19px 34px;
    border-radius: 10px;
    background: #222;
    color: #fff;
    text-decoration: none;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.4;
    box-shadow: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.enter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(34, 34, 34, 0.2);
}

.tips {
    margin-top: 34px;
}

.tip-item {
    margin: 18px 0 0;
    color: #222;
    font-size: clamp(18px, 2.15vw, 27px);
    line-height: 1.75;
}

@media (max-width: 640px) {
    .page {
        align-items: stretch;
        padding: max(28px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
    }

    .card {
        width: 100%;
        margin: auto;
        padding: 0;
        border-radius: 0;
        box-shadow: none;
    }

    .brand {
        font-size: 34px;
    }

    .domain-name {
        margin-top: 6px;
        font-size: 29px;
    }

    .title {
        margin-top: 26px;
        font-size: 16px;
        line-height: 1.8;
    }

    .action-wrap,
    .tips {
        margin-top: 24px;
    }

    .enter-btn {
        min-width: 100%;
        width: 100%;
        font-size: 21px;
        line-height: 1.55;
        padding: 16px 16px;
        border-radius: 9px;
    }

    .tip-item {
        margin-top: 14px;
        font-size: 16px;
        line-height: 1.8;
    }
}

@media (max-width: 380px) {
    .card {
        padding: 0;
    }

    .brand {
        font-size: 30px;
    }

    .domain-name {
        font-size: 24px;
    }

    .title {
        font-size: 14px;
    }

    .enter-btn {
        font-size: 18px;
        padding: 14px 14px;
    }

    .tip-item {
        font-size: 14px;
    }
}