:root {
    --login-brand: #335dff;
    --login-brand-dark: #2349d8;
    --login-ink: #101828;
    --login-muted: #667085;
    --login-border: #e4e7ec;
    --login-page: #f5f7fb;
    --login-card: #ffffff;
    color-scheme: light;
}

* {
    box-sizing: border-box;
}

html {
    min-width: 320px;
    background: var(--login-page);
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 10% 4%, rgba(51, 93, 255, .1), transparent 28%),
        radial-gradient(circle at 88% 95%, rgba(233, 180, 101, .12), transparent 25%),
        var(--login-page);
    color: var(--login-ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

.login-header {
    border-bottom: 1px solid rgba(228, 231, 236, .9);
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(14px);
}

.login-header__inner,
.login-main,
.login-footer {
    width: min(calc(100% - 40px), 1240px);
    margin: 0 auto;
}

.login-header__inner {
    display: flex;
    min-height: 72px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.login-logo {
    display: inline-flex;
    align-items: center;
}

.login-logo img {
    display: block;
    width: 184px;
    height: auto;
}

.login-back {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
    border-radius: 9px;
    color: #475467;
    font-size: 14px;
    font-weight: 650;
    text-decoration: none;
}

.login-back:hover,
.login-back:focus-visible {
    background: #eef3ff;
    color: var(--login-brand-dark);
    outline: none;
}

.login-main {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, 410px);
    align-items: center;
    gap: clamp(40px, 7vw, 96px);
    min-height: calc(100vh - 148px);
    padding: 56px 0 44px;
}

.login-result {
    min-width: 0;
}

.login-result__copy {
    max-width: 680px;
}

.login-eyebrow {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 0 12px;
    border: 1px solid #d8e2ff;
    border-radius: 999px;
    background: #eef3ff;
    color: var(--login-brand-dark);
    font-size: 13px;
    font-weight: 750;
}

.login-result h1 {
    max-width: 660px;
    margin: 18px 0 12px;
    font-size: clamp(34px, 4vw, 52px);
    line-height: 1.14;
    letter-spacing: -.035em;
}

.login-result__copy > p {
    margin: 0;
    color: var(--login-muted);
    font-size: 17px;
    line-height: 1.75;
}

.login-preview {
    position: relative;
    overflow: hidden;
    width: min(100%, 720px);
    min-height: 360px;
    margin: 30px 0 0;
    border: 1px solid rgba(208, 213, 221, .85);
    border-radius: 24px;
    background: #fff;
    box-shadow: 0 24px 64px rgba(16, 24, 40, .12);
}

.login-preview figcaption {
    position: absolute;
    right: 18px;
    bottom: 16px;
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, .72);
    border-radius: 999px;
    background: rgba(255, 255, 255, .88);
    box-shadow: 0 6px 18px rgba(16, 24, 40, .1);
    color: #475467;
    font-size: 12px;
    font-weight: 650;
    backdrop-filter: blur(8px);
}

.login-preview--size-chart {
    display: grid;
    grid-template-columns: 42% 58%;
}

.login-preview__photo {
    min-height: 380px;
    overflow: hidden;
    background: #eadbcf;
}

.login-preview__photo img {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 380px;
    object-fit: cover;
    object-position: center top;
}

.login-preview__chart {
    display: flex;
    min-width: 0;
    flex-direction: column;
    justify-content: center;
    padding: clamp(26px, 4vw, 48px);
    background: #fff;
    text-align: center;
}

.login-preview__label {
    align-self: center;
    margin-bottom: 20px;
    padding: 6px 10px;
    border-radius: 999px;
    background: #f2f4f7;
    color: #667085;
    font-size: 11px;
    font-weight: 700;
}

.login-preview__chart h2 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(25px, 3vw, 34px);
    letter-spacing: .04em;
}

.login-preview__chart > p {
    margin: 7px 0 28px;
    color: #98a2b3;
    font-size: 12px;
}

.login-preview__chart table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    font-variant-numeric: tabular-nums;
}

.login-preview__chart th,
.login-preview__chart td {
    padding: 10px 7px;
    border-bottom: 1px solid #e4e7ec;
    white-space: nowrap;
}

.login-preview__chart th {
    border-bottom: 2px solid #101828;
    font-weight: 750;
}

.login-preview__chart small {
    margin-top: 20px;
    color: #98a2b3;
    font-size: 11px;
    letter-spacing: .1em;
}

.login-preview--document {
    display: grid;
    place-items: center;
    min-height: 390px;
    padding: 26px;
    background: linear-gradient(145deg, #e9eef7, #f9fbff);
}

.login-preview--document img {
    display: block;
    width: auto;
    max-width: 82%;
    height: 340px;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 14px 34px rgba(16, 24, 40, .16);
}

.login-benefits {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 22px;
    margin: 24px 0 0;
    padding: 0;
    color: #475467;
    font-size: 13px;
    font-weight: 650;
    list-style: none;
}

.login-benefits li {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.login-benefits li span {
    display: grid;
    width: 20px;
    height: 20px;
    place-items: center;
    border-radius: 50%;
    background: #eaf8ef;
    color: #168a45;
    font-size: 12px;
}

.login-card {
    width: 100%;
    padding: 28px 30px 24px;
    border: 1px solid rgba(228, 231, 236, .95);
    border-radius: 22px;
    background: rgba(255, 255, 255, .96);
    box-shadow: 0 24px 70px rgba(16, 24, 40, .14);
}

.login-card__heading {
    display: flex;
    align-items: center;
    gap: 13px;
}

.login-card__icon {
    display: grid;
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 13px;
    background: #eaf8ef;
    color: #168a45;
}

.login-card__icon svg {
    width: 26px;
    height: 26px;
    fill: currentColor;
}

.login-card__heading h2 {
    margin: 0;
    font-size: 22px;
    line-height: 1.35;
}

.login-card__heading p {
    margin: 4px 0 0;
    color: var(--login-muted);
    font-size: 13px;
    line-height: 1.55;
}

.login-card__qr {
    display: grid;
    min-height: 310px;
    margin: 20px 0 12px;
    place-items: center;
    overflow: hidden;
    border: 1px solid #eaecf0;
    border-radius: 18px;
    background: #fbfcfe;
}

.ch-wechat-login {
    display: grid;
    width: 100%;
    min-height: 300px;
    place-items: center;
}

.ch-wechat-login iframe {
    display: block;
    max-width: 100%;
    margin: 0 auto;
}

.ch-wechat-login__status {
    display: flex;
    min-height: 300px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 20px;
    color: var(--login-muted);
    font-size: 14px;
    text-align: center;
}

.ch-wechat-login__spinner {
    width: 30px;
    height: 30px;
    border: 3px solid #e4e7ec;
    border-top-color: var(--login-brand);
    border-radius: 50%;
    animation: login-spin .8s linear infinite;
}

.ch-wechat-login__retry {
    min-height: 40px;
    padding: 0 16px;
    border: 1px solid var(--login-brand);
    border-radius: 9px;
    background: #fff;
    color: var(--login-brand-dark);
    font: inherit;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.ch-wechat-login__retry:hover,
.ch-wechat-login__retry:focus-visible {
    background: #eef3ff;
    outline: 3px solid rgba(51, 93, 255, .14);
}

.login-card__trust {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    color: #667085;
    font-size: 12px;
}

.login-card__mobile-help {
    margin-top: 18px;
    border-top: 1px solid #eaecf0;
    color: #475467;
    font-size: 13px;
}

.login-card__mobile-help summary {
    padding-top: 16px;
    text-align: center;
    cursor: pointer;
}

.login-card__mobile-help p {
    margin: 9px 0 0;
    color: var(--login-muted);
    line-height: 1.6;
    text-align: center;
}

.login-footer {
    display: flex;
    min-height: 76px;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid rgba(228, 231, 236, .75);
    color: #98a2b3;
    font-size: 12px;
}

.login-footer nav {
    display: flex;
    gap: 18px;
}

.login-footer a {
    text-decoration: none;
}

.login-footer a:hover,
.login-footer a:focus-visible {
    color: var(--login-brand-dark);
    outline: none;
}

@keyframes login-spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 960px) {
    .login-main {
        grid-template-columns: minmax(0, 1fr) minmax(330px, 390px);
        gap: 32px;
    }

    .login-preview--size-chart {
        grid-template-columns: 38% 62%;
    }

    .login-preview__chart {
        padding: 26px;
    }
}

@media (max-width: 800px) {
    .login-header__inner,
    .login-main,
    .login-footer {
        width: min(calc(100% - 28px), 620px);
    }

    .login-header__inner {
        min-height: 64px;
    }

    .login-logo img {
        width: 150px;
    }

    .login-main {
        grid-template-columns: 1fr;
        min-height: 0;
        padding: 36px 0 48px;
    }

    .login-result h1 {
        font-size: clamp(30px, 8vw, 42px);
    }

    .login-result__copy > p {
        font-size: 15px;
    }

    .login-preview {
        min-height: 300px;
        margin-top: 24px;
        border-radius: 18px;
    }

    .login-preview__photo,
    .login-preview__photo img {
        min-height: 320px;
    }

    .login-card {
        max-width: 440px;
        margin: 0 auto;
    }
}

@media (max-width: 520px) {
    .login-header__inner,
    .login-main,
    .login-footer {
        width: min(calc(100% - 24px), 440px);
    }

    .login-back {
        padding: 0 4px;
        font-size: 13px;
    }

    .login-preview--size-chart {
        grid-template-columns: 40% 60%;
    }

    .login-preview__photo,
    .login-preview__photo img {
        min-height: 280px;
    }

    .login-preview__chart {
        padding: 20px 14px 46px;
    }

    .login-preview__label,
    .login-preview__chart small {
        display: none;
    }

    .login-preview__chart h2 {
        font-size: 21px;
    }

    .login-preview__chart > p {
        margin-bottom: 14px;
    }

    .login-preview__chart table {
        font-size: 11px;
    }

    .login-preview__chart th,
    .login-preview__chart td {
        padding: 8px 3px;
    }

    .login-preview--document {
        min-height: 310px;
        padding: 18px;
    }

    .login-preview--document img {
        max-width: 90%;
        height: 280px;
    }

    .login-benefits {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .login-card {
        padding: 24px 18px 20px;
        border-radius: 18px;
    }

    .login-card__heading h2 {
        font-size: 20px;
    }

    .login-card__qr {
        min-height: 300px;
    }

    .login-footer {
        flex-direction: column;
        justify-content: center;
        padding: 20px 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .ch-wechat-login__spinner {
        animation-duration: 1.8s;
    }
}