* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    width: 100%;
    min-height: 100vh;
    font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ef 100%);
}

a {
    text-decoration: none
}

.box {
    margin: 0 auto;
    padding: 40px 24px 24px 24px;
    max-width: 100vw;
    min-height: 100vh;
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 6px 32px 0 rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.ip {
    margin-bottom: 18px;
    color: #e74c3c;
    font-weight: 800;
    font-size: 2rem;
    letter-spacing: 2px;
    text-align: center;
}

.title {
    color: #c96501;
    font-size: 1.1rem;
    text-align: center;
    margin-bottom: 8px;
    font-weight: 500;
    line-height: 1.5;
}

.main {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin: 18px auto 0 auto;
    width: 100%;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.main a {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin: 0;
    padding: 0 16px;
    width: 100%;
    height: 44px;
    border: 1.5px solid #e0e0e0;
    border-radius: 8px;
    background: #f7fafd;
    color: #444;
    font-weight: 600;
    font-size: 15px;
    line-height: 44px;
    box-shadow: 0 2px 8px 0 rgba(0,0,0,0.03);
    transition: box-shadow 0.2s, border 0.2s;
    cursor: not-allowed;
    pointer-events: none;
}

.main .success {
    border: 1.5px solid #53c957;
    background: linear-gradient(90deg, #eaffea 0%, #d2f8d2 100%);
    color: #1a7f2e;
    cursor: pointer;
    pointer-events: auto;
    box-shadow: 0 2px 12px 0 rgba(83,201,87,0.08);
}

.main .warn {
    border: 1.5px solid #ffc107;
    background: linear-gradient(90deg, #fffbe6 0%, #fff3cd 100%);
    color: #b8860b;
    cursor: pointer;
    pointer-events: auto;
    box-shadow: 0 2px 12px 0 rgba(255,193,7,0.08);
}

.main .err {
    border: 1.5px solid #e74c3c;
    background: linear-gradient(90deg, #ffeaea 0%, #ffd6d6 100%);
    color: #c0392b;
}

.main a .time {
    margin-left: auto;
    margin-right: 8px;
    text-align: right;
    font-size: 13px;
    flex-grow: 1;
    opacity: 0.7;
}

.main a i {
    display: block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 8px;
    background: #333;
}

.main .success i { background: #53c957; }
.main .warn i { background: #ffc107; }
.main .err i { background: #e74c3c; }

.btn {
    margin: 18px auto 0 auto;
    width: 90%;
    max-width: 320px;
    height: 48px;
    border-radius: 24px;
    background: linear-gradient(90deg, #53c957 0%, #43b26c 100%);
    color: #fff;
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    line-height: 48px;
    cursor: pointer;
    box-shadow: 0 2px 8px 0 rgba(83,201,87,0.10);
    border: none;
    transition: background 0.2s, box-shadow 0.2s;
    margin-bottom: 12px;
}
.btn:hover {
    background: linear-gradient(90deg, #43b26c 0%, #53c957 100%);
    box-shadow: 0 4px 16px 0 rgba(83,201,87,0.18);
}

.appbtn {
    background: linear-gradient(90deg, #00aeff 0%, #0077b6 100%);
    box-shadow: 0 2px 8px 0 rgba(0,174,255,0.10);
}
.appbtn:hover {
    background: linear-gradient(90deg, #0077b6 0%, #00aeff 100%);
}
.kfbtn {
    background: linear-gradient(90deg, #ff4d4f 0%, #c0392b 100%);
    box-shadow: 0 2px 8px 0 rgba(255,77,79,0.10);
}
.kfbtn:hover {
    background: linear-gradient(90deg, #c0392b 0%, #ff4d4f 100%);
}

/* 延迟分级颜色 */
.delay-fast {
    background: linear-gradient(90deg, #eaffea 0%, #d2f8d2 100%) !important;
    border-color: #53c957 !important;
    color: #1a7f2e !important;
}
.delay-medium {
    background: linear-gradient(90deg, #fffbe6 0%, #fff3cd 100%) !important;
    border-color: #ffc107 !important;
    color: #b8860b !important;
}
.delay-slow {
    background: linear-gradient(90deg, #fff4e6 0%, #ffd6a0 100%) !important;
    border-color: #ff9800 !important;
    color: #ff9800 !important;
}
.delay-error {
    background: linear-gradient(90deg, #ffeaea 0%, #ffd6d6 100%) !important;
    border-color: #e74c3c !important;
    color: #e74c3c !important;
}

/* 响应式适配 */
@media (max-width: 600px) {
    .box {
        max-width: 100vw;
        min-height: 100vh;
        border-radius: 0;
        padding: 24px 4vw 16vw 4vw;
        box-shadow: none;
    }
    .ip {
        font-size: 1.3rem;
    }
    .title {
        font-size: 1rem;
    }
    .main {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px;
        width: 100%;
    }
    .main a {
        width: 100%;
        min-width: 0;
        max-width: 100%;
        font-size: 15px;
        margin: 0;
    }
    .btn {
        width: 98vw;
        font-size: 18px;
        height: 44px;
        line-height: 44px;
    }
}