/* ========== 会员登录 / 注册 · 大气沉浸分屏 ========== */
:root {
    --auth-ink: #0a1628;
    --auth-muted: #64748b;
    --auth-line: #e4ebf4;
    --auth-accent: var(--primary, #1a56db);
    --auth-accent-dark: var(--primary-dark, #0f2d6e);
    --auth-gold: #c9a227;
    --auth-font: var(--font, 'Noto Serif SC', 'Source Han Serif SC', 'Source Han Serif CN', 'Songti SC', 'SimSun', serif);
}

/* 全文思源宋体 */
body.is-member-auth,
body.is-member-auth button,
body.is-member-auth input,
body.is-member-auth .form-control,
body.is-member-auth .nav-link,
body.is-member-auth a {
    font-family: var(--auth-font);
}

/* 沉浸模式：弱化站点壳层，突出登录主舞台 */
body.is-member-auth .top-bar { display: none !important; }
body.is-member-auth .site-footer .footer-main { display: none !important; }
body.is-member-auth .cs-float-wrap,
body.is-member-auth .cs-popup { display: none !important; }
body.is-member-auth .h5-tabbar { display: none !important; }
body.is-member-auth {
    background: #07111f;
}
body.is-member-auth .main-nav {
    background: rgba(7, 17, 31, .88) !important;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    backdrop-filter: blur(16px);
}
body.is-member-auth .main-nav .nav-link,
body.is-member-auth .main-nav .logo-text,
body.is-member-auth .main-nav .logo-text em {
    color: rgba(255, 255, 255, .9) !important;
}
body.is-member-auth .main-nav .nav-link:hover,
body.is-member-auth .main-nav .nav-link.active {
    color: #fff !important;
}
body.is-member-auth .main-nav .navbar-toggler {
    border-color: rgba(255, 255, 255, .25);
}
body.is-member-auth .main-nav .navbar-toggler-icon {
    filter: invert(1);
}
body.is-member-auth .main-nav .dropdown-menu {
    background: #fff;
    border: 1px solid var(--auth-line);
    box-shadow: 0 16px 40px rgba(10, 22, 40, .14);
}
body.is-member-auth .main-nav .dropdown-item {
    color: var(--auth-ink);
}
body.is-member-auth .site-footer {
    background: #07111f;
    border-top: 1px solid rgba(255, 255, 255, .08);
}
body.is-member-auth .footer-bottom {
    background: transparent;
    color: rgba(255, 255, 255, .45);
    padding: 14px 0;
    font-size: 12px;
}
body.is-member-auth .footer-bottom a {
    color: rgba(255, 255, 255, .55);
}

.member-auth-page {
    position: relative;
    min-height: calc(100vh - 72px - 48px);
    padding: 0;
    overflow: hidden;
    background: #07111f;
}

.member-auth-shell {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(380px, .88fr);
    min-height: calc(100vh - 72px - 48px);
}

/* ---- 左侧品牌深色区 ---- */
.member-auth-brand {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 56px 48px 56px 64px;
    color: #fff;
    overflow: hidden;
    background:
        radial-gradient(ellipse 60% 70% at 100% 0%, rgba(201, 162, 39, .24) 0%, transparent 50%),
        radial-gradient(ellipse 55% 60% at 0% 100%, rgba(59, 130, 246, .3) 0%, transparent 48%),
        linear-gradient(145deg, #07111f 0%, #0f2d6e 48%, #1a56db 100%);
}
.member-auth-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: linear-gradient(135deg, #000 20%, transparent 85%);
    pointer-events: none;
}
.member-auth-brand-glow {
    position: absolute;
    width: 520px;
    height: 520px;
    right: -140px;
    top: -160px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,.16) 0%, transparent 68%);
    pointer-events: none;
    animation: authGlow 8s ease-in-out infinite alternate;
}
@keyframes authGlow {
    from { opacity: .7; transform: scale(1); }
    to { opacity: 1; transform: scale(1.08); }
}
.member-auth-brand-inner {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 540px;
    animation: authRise .7s ease both;
}
@keyframes authRise {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

.member-auth-brand-home {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    text-decoration: none;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
}
.member-auth-brand-home:hover { color: #fff; opacity: .92; }
.member-auth-brand-logo {
    height: 40px;
    width: auto;
    border-radius: 8px;
    background: rgba(255,255,255,.1);
}
.member-auth-brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--auth-font);
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, rgba(255,255,255,.22), rgba(255,255,255,.08));
    border: 1px solid rgba(255,255,255,.2);
}

.member-auth-brand-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    padding: 7px 16px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .12em;
    color: #f5e6b0;
    background: rgba(201, 162, 39, .16);
    border: 1px solid rgba(201, 162, 39, .35);
}
.member-auth-brand-title {
    margin: 0 0 18px;
    font-family: var(--auth-font);
    font-size: clamp(36px, 4.6vw, 52px);
    font-weight: 700;
    line-height: 1.16;
    letter-spacing: .02em;
    color: #fff;
    text-shadow: 0 12px 40px rgba(0,0,0,.3);
}
.member-auth-brand-title em {
    font-style: normal;
    background: linear-gradient(120deg, #fff 15%, #f5e6b0 92%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.member-auth-brand-desc {
    margin: 0 0 32px;
    max-width: 28em;
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255,255,255,.76);
}

.member-auth-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    margin-bottom: 30px;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.16);
    border-radius: 18px;
    overflow: hidden;
    backdrop-filter: blur(12px);
}
.member-auth-stat {
    padding: 20px 10px;
    text-align: center;
    background: rgba(7, 17, 31, .34);
}
.member-auth-stat strong {
    display: block;
    font-family: var(--auth-font);
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}
.member-auth-stat span {
    font-size: 12px;
    color: rgba(255,255,255,.58);
    letter-spacing: .04em;
}

.member-auth-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
}
.member-auth-feature {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 15px 16px;
    border-radius: 16px;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.1);
    transition: background .25s, transform .25s;
}
.member-auth-feature:hover {
    background: rgba(255,255,255,.13);
    transform: translateX(6px);
}
.member-auth-feature-icon {
    flex-shrink: 0;
    width: 46px;
    height: 46px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    background: linear-gradient(135deg, rgba(255,255,255,.22), rgba(255,255,255,.08));
    border: 1px solid rgba(255,255,255,.18);
}
.member-auth-feature:nth-child(2) .member-auth-feature-icon {
    background: linear-gradient(135deg, #10b981, #047857);
    border-color: transparent;
}
.member-auth-feature:nth-child(3) .member-auth-feature-icon {
    background: linear-gradient(135deg, var(--auth-gold), #a67c00);
    border-color: transparent;
}
.member-auth-feature h3 {
    margin: 0 0 4px;
    font-size: 15px;
    font-weight: 700;
    color: #fff;
}
.member-auth-feature p {
    margin: 0;
    font-size: 13px;
    line-height: 1.55;
    color: rgba(255,255,255,.62);
}

.member-auth-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 22px;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255,255,255,.62);
}
.member-auth-trust span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.member-auth-trust i { color: #f5e6b0; }

/* ---- 右侧表单 ---- */
.member-auth-form-col {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 40px;
    background:
        radial-gradient(ellipse 70% 50% at 80% 10%, rgba(26, 86, 219, .1), transparent 55%),
        linear-gradient(180deg, #f7f9fc 0%, #eef2f8 100%);
}
.member-auth-form-card {
    width: 100%;
    max-width: 460px;
    background: rgba(255, 255, 255, .97);
    border: 1px solid rgba(255, 255, 255, .9);
    border-radius: 26px;
    box-shadow:
        0 32px 90px rgba(10, 22, 40, .16),
        0 0 0 1px rgba(228, 235, 244, .7);
    backdrop-filter: blur(18px);
    padding: 42px 40px 36px;
    position: relative;
    overflow: hidden;
    animation: authRise .75s .08s ease both;
}
.member-auth-form-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--auth-accent) 0%, var(--auth-gold) 50%, var(--auth-accent-dark) 100%);
}

.member-auth-form-head {
    text-align: center;
    margin-bottom: 28px;
}
.member-auth-form-head h2 {
    margin: 0 0 8px;
    font-family: var(--auth-font);
    font-size: 30px;
    font-weight: 700;
    color: var(--auth-ink);
    letter-spacing: .02em;
}
.member-auth-form-head p {
    margin: 0;
    font-size: 14px;
    color: var(--auth-muted);
}

.member-auth-mobile-brand {
    display: none;
    text-align: center;
    margin-bottom: 22px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--auth-line);
}
.member-auth-mobile-brand img {
    height: 44px;
    margin: 0 auto 10px;
    display: block;
}
.member-auth-mobile-brand .logo-mark {
    width: 52px;
    height: 52px;
    margin: 0 auto 12px;
    background: linear-gradient(135deg, var(--auth-accent), var(--auth-accent-dark));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-family: var(--auth-font);
    font-size: 22px;
    font-weight: 700;
    box-shadow: 0 10px 24px rgba(26, 86, 219, .3);
}
.member-auth-mobile-brand h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--auth-ink);
}

.member-auth-alert {
    border: none;
    border-radius: 12px;
    font-size: 14px;
    padding: 12px 16px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.member-auth-page .member-auth-tabs,
.member-auth-tabs {
    display: flex;
    gap: 6px;
    padding: 5px;
    margin-bottom: 24px;
    background: #eef2f7;
    border-radius: 14px;
    border: none;
}
.member-auth-tabs .nav-item { flex: 1; }
.member-auth-page .member-auth-tabs .nav-link,
.member-auth-tabs .nav-link {
    width: 100%;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 650;
    color: var(--auth-muted);
    padding: 10px 14px;
    background: transparent;
    transition: all .25s;
}
.member-auth-page .member-auth-tabs .nav-link.active,
.member-auth-tabs .nav-link.active {
    background: linear-gradient(135deg, var(--auth-accent), var(--auth-accent-dark));
    color: #fff;
    box-shadow: 0 8px 18px rgba(26, 86, 219, .32);
}

.member-auth-field { margin-bottom: 18px; }
.member-auth-field label {
    display: block;
    font-size: 13px;
    font-weight: 650;
    color: #334155;
    margin-bottom: 8px;
}

.member-auth-input-wrap {
    position: relative;
    display: flex;
    align-items: stretch;
}
.member-auth-input-wrap > i.bi {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    font-size: 17px;
    z-index: 2;
    pointer-events: none;
}
.member-auth-input-wrap .form-control {
    padding: 13px 16px 13px 46px;
    border: 1px solid var(--auth-line);
    border-radius: 12px;
    font-size: 15px;
    background: #fff;
    transition: border-color .2s, box-shadow .2s;
}
.member-auth-input-wrap .form-control:focus {
    border-color: var(--auth-accent);
    box-shadow: 0 0 0 4px rgba(26, 86, 219, .12);
}
.member-auth-input-wrap .form-control::placeholder { color: #94a3b8; }
.member-auth-input-wrap--sms .form-control { padding-right: 120px; }
.member-auth-input-wrap--captcha .form-control { padding-right: 126px; }

.member-auth-captcha-img {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    width: 110px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--auth-line);
    cursor: pointer;
    background: #F8FAFC;
    z-index: 2;
}
.member-auth-captcha-img:hover { border-color: #94A3B8; }

.member-auth-sms-btn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: linear-gradient(135deg, var(--auth-accent), var(--auth-accent-dark));
    color: #fff;
    font-size: 12px;
    font-weight: 650;
    padding: 8px 14px;
    border-radius: 8px;
    white-space: nowrap;
    z-index: 2;
    transition: opacity .2s, transform .2s;
}
.member-auth-sms-btn:hover {
    opacity: .92;
    color: #fff;
    transform: translateY(-50%) scale(1.02);
}
.member-auth-sms-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}

.member-auth-submit {
    width: 100%;
    padding: 15px 24px;
    margin-top: 8px;
    border: none;
    border-radius: 999px;
    font-size: 16px;
    font-weight: 750;
    color: #fff;
    background: linear-gradient(135deg, var(--auth-accent), var(--auth-accent-dark));
    box-shadow: 0 12px 28px rgba(26, 86, 219, .32);
    transition: transform .2s, box-shadow .2s;
}
.member-auth-submit:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 16px 36px rgba(26, 86, 219, .42);
}
.member-auth-submit:active { transform: translateY(0); }

.member-auth-switch {
    text-align: center;
    margin-top: 22px;
    font-size: 14px;
    color: var(--auth-muted);
}
.member-auth-switch a {
    color: var(--auth-accent);
    font-weight: 750;
    margin-left: 4px;
}
.member-auth-switch a:hover { color: var(--auth-accent-dark); }

.member-auth-page .oauth-divider {
    margin: 26px 0 18px;
    font-size: 12px;
    letter-spacing: .04em;
}
.member-auth-page .oauth-btns { gap: 10px; }
.member-auth-page .oauth-btn {
    flex: 1;
    min-width: 100px;
    justify-content: center;
    padding: 10px 14px;
    border-radius: 12px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .1);
}

@media (max-width: 1200px) {
    .member-auth-shell { grid-template-columns: minmax(0, 1fr) minmax(360px, .92fr); }
    .member-auth-brand { padding: 40px 32px; }
    .member-auth-form-col { padding: 36px 28px; }
}

@media (max-width: 991.98px) {
    body.is-member-auth {
        background: linear-gradient(180deg, #0f2d6e 0%, #eef2f8 42%);
    }
    body.is-member-auth .main-nav {
        background: rgba(7, 17, 31, .94) !important;
    }
    body.is-member-auth .site-footer {
        background: #eef2f8;
        border-top-color: var(--auth-line);
    }
    body.is-member-auth .footer-bottom {
        color: var(--auth-muted);
    }
    body.is-member-auth .footer-bottom a {
        color: var(--auth-muted);
    }
    .member-auth-page {
        min-height: auto;
        background: transparent;
    }
    .member-auth-shell {
        display: block;
        min-height: auto;
    }
    .member-auth-brand { display: none; }
    .member-auth-form-col {
        padding: 28px 16px 48px;
        background: transparent;
    }
    .member-auth-mobile-brand { display: block; }
    .member-auth-form-card {
        max-width: 480px;
        margin: 0 auto;
        padding: 32px 26px;
    }
    .member-auth-form-head h2 { font-size: 26px; }
}

@media (max-width: 575.98px) {
    .member-auth-form-col { padding: 20px 12px 40px; }
    .member-auth-form-card {
        padding: 26px 18px;
        border-radius: 20px;
    }
    .member-auth-input-wrap--sms .form-control { padding-right: 16px; }
    .member-auth-input-wrap--sms {
        flex-direction: column;
        gap: 10px;
    }
    .member-auth-input-wrap--sms .member-auth-sms-btn {
        position: static;
        transform: none;
        width: 100%;
        padding: 12px;
    }
    .member-auth-input-wrap--captcha {
        flex-wrap: wrap;
        gap: 10px;
    }
    .member-auth-input-wrap--captcha .form-control {
        padding-right: 16px;
        width: 100%;
    }
    .member-auth-captcha-img {
        position: static;
        transform: none;
        margin-left: 46px;
    }
    .member-auth-page .oauth-btn { flex: 1 1 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .member-auth-feature,
    .member-auth-submit,
    .member-auth-brand-glow,
    .member-auth-brand-inner,
    .member-auth-form-card {
        animation: none;
        transition: none;
    }
}