* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, PingFang SC, "Microsoft YaHei", Arial;
    color: #101828;
    background:
            radial-gradient(900px 500px at 20% 0%, rgba(255, 120, 210, 0.25), transparent 60%),
            radial-gradient(900px 500px at 80% 20%, rgba(0, 198, 255, 0.25), transparent 60%),
            linear-gradient(140deg, #0b1220, #101a2e 45%, #0b1220);
}

.page {
    min-height: 100%;
    display: grid;
    place-items: center;
    padding: 20px 16px;
}

.card {
    width: min(420px, 100%);
    border-radius: 18px;
    padding: 22px 18px 18px;
    background: rgba(255,255,255,0.78);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.28);
    box-shadow:
            0 18px 60px rgba(0,0,0,0.35),
            0 1px 0 rgba(255,255,255,0.4) inset;
    text-align: center;
}

.logo-wrap {
    width: 108px;
    height: 108px;          /* 正方形 */
    margin: 2px auto 12px;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(16,24,40,0.12);
    background: rgba(255,255,255,0.6);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.logo-wrap-2 {
    height: 108px;          /* 正方形 */
    margin: 2px auto 12px;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(16,24,40,0.12);
    background: rgba(255,255,255,0.6);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.logo {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.title {
    margin: 6px 0 8px;
    font-size: 40px;
    font-weight: 800;
    letter-spacing: 0.2px;
}

h4.title {
    margin: 6px 0 8px;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.2px;
}

.desc {
    margin: 0 auto 14px;
    font-size: 14px;
    line-height: 1.55;
    color: rgba(16,24,40,0.78);
}

.tip {
    text-align: left;
    padding: 12px 12px;
    border-radius: 14px;
    background: rgba(16, 24, 40, 0.05);
    border: 1px solid rgba(16, 24, 40, 0.08);
    margin-bottom: 14px;
}

.tip__title {
    font-weight: 800;
    font-size: 13px;
    margin-bottom: 8px;
}

.tip__list {
    margin: 0;
    padding-left: 18px;
    color: rgba(16,24,40,0.75);
    font-size: 13px;
    line-height: 1.6;
}

.mail-btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 900;
    font-size: 14px;
    color: #ffffff;
    background: #0075ff;
    box-shadow: 0 14px 34px rgba(0,117,255,0.32);
    border: 1px solid rgba(255,255,255,0.18);
}

.mail-btn:active { transform: translateY(1px); }

.footer {
    margin: 14px 0 0;
    font-size: 12.5px;
    line-height: 1.55;
    color: rgba(16,24,40,0.75);
}

.safe-area {
    height: env(safe-area-inset-bottom, 0px);
    text-align: center;
}

.safe-area a {
    color: #fff;
}