:root {
    --page-bg: #f4f8ff;
    --text-primary: #171b24;
    --text-secondary: #6d7484;
    --line-color: #e7eef8;
    --brand-blue: #2b79ff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-primary);
    background:
        radial-gradient(circle at left 180px, rgba(159, 196, 255, 0.22), transparent 220px),
        linear-gradient(180deg, #f7fbff 0%, #f6f9ff 100%);
}

a {
    color: inherit;
    text-decoration: none;
}

.PlanDialog {
    position: fixed;
    inset: 0;
    z-index: 999;
}

.PlanDialog__mask {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.42);
}

.PlanDialog__panel {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 560px;
    padding: 28px 32px 34px;
    border-radius: 18px;
    background: #fff;
    transform: translate(-50%, -50%);
    box-shadow: 0 28px 48px rgba(0, 0, 0, 0.16);
}

.PlanDialog__close {
    position: absolute;
    top: 18px;
    right: 20px;
    font-size: 34px;
    line-height: 1;
    color: #8d919a;
    cursor: pointer;
}

.PlanDialog__title {
    margin: 8px 0 18px;
    font-size: 30px;
    font-weight: 700;
    text-align: center;
    color: #1f1f1f;
}

.PlanDialog__desc {
    margin: 0 0 26px;
    font-size: 16px;
    line-height: 1.8;
    text-align: center;
    color: #4d5566;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 1px solid rgba(227, 235, 247, 0.9);
    backdrop-filter: blur(14px);
    background: rgba(255, 255, 255, 0.86);
}

.site-header__inner,
.hero__inner,
.feature-section__inner,
.site-footer__inner {
    width: min(1240px, calc(100vw - 48px));
    margin: 0 auto;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 82px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
}

.site-logo__mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 14px;
    background: linear-gradient(135deg, #1f7cff 0%, #5bbfff 100%);
    font-size: 22px;
    color: #fff;
}

.site-logo__text {
    font-size: 28px;
}

.site-nav {
    display: flex;
    gap: 38px;
    font-size: 16px;
    color: #4b5468;
}

.site-nav .is-active {
    font-weight: 700;
    color: #1b2433;
}

.site-header__cta {
    width: 118px;
    height: 44px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, #2c7cff 0%, #60d0ff 100%);
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
}

.hero {
    padding: 72px 0 48px;
    margin-top: 64px;
}

.hero h1 {
    margin: 0;
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    text-align: center;
}

.hero p {
    margin: 18px 0 0;
    font-size: 22px;
    text-align: center;
    color: var(--text-secondary);
}

.plan-grid {
    display: grid;
    grid-template-columns: repeat(2, 330px);
    justify-content: center;
    gap: 20px;
    margin-top: 56px;
}

.plan-card {
    position: relative;
    min-height: 550px;
    padding: 40px 0 0;
    border-radius: 20px;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    box-shadow: 0 24px 48px rgba(103, 133, 180, 0.12);
}

.plan-card__badge,
.plan-card__recommend {
    position: absolute;
    top: 0;
    left: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 34px;
    padding: 0 18px;
    border-radius: 20px 0 20px 0;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
}

.plan-card__badge {
    min-width: 102px;
    background: #435166;
}

.plan-card__recommend {
    min-width: 132px;
    background: linear-gradient(90deg, #ff9a37 0%, #ff2f63 100%);
}

.plan-card__top {
    position: relative;
    min-height: 120px;
    padding: 0 35px;
}

.plan-card__title {
    position: relative;
    z-index: 1;
    margin-top: 0;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.1;
    font-style: italic;
}
.plan-card__title__desc {
    color: #4596F6;
    font-size: 16px;
    font-style: normal;
    margin-bottom: 3px;
    font-weight: 500;
    margin-top: 6px;
}

.plan-card__desc {
    position: relative;
    z-index: 1;
    max-width: 210px;
    margin-top: 10px;
    font-size: 15px;
    line-height: 1.75;
    white-space: pre-line;
}

.plan-card__icon {
    position: absolute;
    top: -20px;
    right: 17px;
    width: 130px;
    height: 130px;
    object-fit: contain;
}

.plan-card__content {
    min-height: 405px;
    margin-top: 0;
    padding: 30px 35px 0;
    border: 1px solid rgba(255, 255, 255, 0.68);
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.32) 0%, rgba(255, 255, 255, 0.18) 20%, rgba(255, 255, 255, 0.08) 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.45);
    backdrop-filter: blur(4px);
}

.plan-card__feature {
    display: flex;
    align-items: baseline;
    margin-bottom: 16px;
    font-size: 18px;
    line-height: 1.2;
}

.plan-card__feature:last-child {
    margin-bottom: 0;
}

.plan-card__feature-label {
    flex-shrink: 0;
    font-size: 16px;
    width: 120px;
}

.plan-card__feature-value {
    margin-left: 10px;
    font-size: 18px;
    font-weight: 700;
}

.plan-card__footer {
    position: absolute;
    right: 40px;
    bottom: 40px;
    left: 40px;
}

.plan-card__price {
    display: flex;
    align-items: baseline;
    margin-bottom: 12px;
}

.plan-card__currency,
.plan-card__price-unit {
    margin-right: 6px;
    font-size: 22px;
    font-weight: 700;
}

.plan-card__price-value {
    font-size: 38px;
    font-weight: 700;
    line-height: 1;
}

.plan-card__btn {
    width: 100%;
    height: 40px;
    border: 0;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    line-height: 40px;
    text-align: center;
    cursor: pointer;
}

.plan-card.is-trial {
    color: #3d4a61;
}

.plan-card.is-trial .plan-card__feature-label {
    color: rgba(91, 103, 123, 0.76);
}

.plan-card.is-trial .plan-card__feature-value,
.plan-card.is-trial .plan-card__currency,
.plan-card.is-trial .plan-card__price-value {
    color: #3d4a61;
}

.plan-card.is-trial .plan-card__btn {
    background: linear-gradient(180deg, #4a505a 0%, #393e48 100%);
    color: #fff;
}

.plan-card.is-standard {
    color: #2577ef;
}

.plan-card.is-standard .plan-card__desc {
    color: #4596f6;
    font-size: 16px;
}

.plan-card.is-standard .plan-card__feature-label {
    color: rgba(37, 119, 239, 0.68);
}

.plan-card.is-standard .plan-card__feature-value,
.plan-card.is-standard .plan-card__currency,
.plan-card.is-standard .plan-card__price-value {
    color: #2577ef;
}

.plan-card.is-standard .plan-card__btn {
    background: linear-gradient(90deg, #2577ef 0%, #47d5f1 100%);
    color: #fff;
}

.plan-card.is-premium {
    color: #fff2ca;
}

.plan-card.is-premium .plan-card__title__desc {
    color: #d1c8a3;
    font-size: 16px;
}

.plan-card.is-premium .plan-card__feature-label {
    color: rgba(255, 242, 202, 0.82);
}

.plan-card.is-premium .plan-card__feature-value,
.plan-card.is-premium .plan-card__currency,
.plan-card.is-premium .plan-card__price-value {
    color: #fff2ca;
}

.plan-card.is-premium .plan-card__btn {
    background: linear-gradient(90deg, #ffb000 0%, #ffd98b 100%);
    color: #fff;
}

.feature-section {
    padding: 0 0 88px;
}

.feature-section__inner {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
}

.feature-tabs {
    background: linear-gradient(180deg, rgba(235, 241, 252, 0.72) 0%, rgba(246, 249, 255, 0.9) 100%);
    position: sticky;
    top: 108px;
    align-self: start;
}

.feature-tab {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 60px;
    padding: 0 28px;
    border-bottom: 1px solid rgba(227, 235, 247, 0.9);
    font-size: 18px;
    color: #8b93a4;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.feature-tab.is-active {
    background: rgba(255, 255, 255, 0.62);
    color: #1b2230;
    font-weight: 700;
    padding-left: 34px;
}

.feature-tab__index {
    width: 32px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.feature-content {
    min-width: 0;
    padding: 0;
    background: #fff;
}

.feature-groups {
    display: grid;
}

.feature-group {
    scroll-margin-top: 110px;
    background: #fff;
}

.feature-group + .feature-group {
    border-top: 1px solid #edf2fb;
}

.feature-group__header {
    display: grid;
    grid-template-columns: 278px minmax(0, 1fr);
    min-height: 96px;
    position: sticky;
    top: 72px;
    z-index: 1;
}

.feature-group__heading,
.feature-group__desc-title {
    display: flex;
    align-items: center;
    min-width: 0;
    padding: 0 32px;
    background: linear-gradient(180deg, #edf3ff 0%, #e8eefb 100%);
    border-bottom: 1px solid #edf2fb;
}

.feature-group__heading {
    gap: 14px;
    border-right: 1px solid #edf2fb;
}

.feature-group__serial {
    font-size: 36px;
    font-weight: 700;
    line-height: 1;
    color: #111722;
}

.feature-group__title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.1;
    color: #111722;
}

.feature-group__desc-title {
    font-size: 18px;
    color: #5a6578;
}

.feature-group__body {
    display: grid;
}

.feature-group__row {
    display: grid;
    grid-template-columns: 278px minmax(0, 1fr);
    min-height: 102px;
}

.feature-group__row + .feature-group__row {
    border-top: 1px solid #edf2fb;
}

.feature-group__name,
.feature-group__desc {
    display: flex;
    align-items: center;
    min-width: 0;
    padding: 24px 32px;
}

.feature-group__name {
    border-right: 1px solid #edf2fb;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.5;
    color: #121826;
}

.feature-group__desc {
    font-size: 16px;
    line-height: 1.8;
    color: #586173;
}

.site-footer {
    background: #0f1622;
    color: rgba(255, 255, 255, 0.82);
}

.site-footer__inner {
    display: grid;
    grid-template-columns: 1.2fr 1.8fr;
    gap: 60px;
    padding: 56px 0 40px;
}

.site-footer__logo {
    margin-bottom: 18px;
    font-size: 32px;
    font-weight: 700;
    color: #fff;
}

.site-footer__brand p {
    max-width: 420px;
    margin: 0;
    font-size: 15px;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.66);
}

.site-footer__links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.site-footer__links h4 {
    margin: 0 0 18px;
    font-size: 18px;
    color: #fff;
}

.site-footer__links a {
    display: block;
    margin-bottom: 12px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.68);
}

.site-footer__copyright {
    padding: 18px 24px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 13px;
    text-align: center;
    color: rgba(255, 255, 255, 0.46);
}

@media (max-width: 1200px) {
    .hero h1 {
        font-size: 40px;
    }

    .plan-grid {
        grid-template-columns: 1fr;
    }

    .plan-card {
        min-height: auto;
    }

    .plan-card__footer {
        position: static;
        margin: 16px 40px 40px;
    }

    .feature-section__inner {
        grid-template-columns: 1fr;
    }

    .feature-tabs {
        position: static;
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .site-header__inner {
        height: auto;
        padding: 18px 0;
        flex-wrap: wrap;
        gap: 16px;
    }

    .site-nav {
        gap: 18px;
        flex-wrap: wrap;
        font-size: 14px;
    }

    .hero {
        padding-top: 48px;
    }

    .hero h1 {
        font-size: 30px;
    }

    .hero p {
        font-size: 16px;
    }

    .plan-card__top {
        min-height: 105px;
        padding: 0 24px;
    }

    .plan-card__icon {
        top: -18px;
        right: 18px;
        width: 138px;
        height: 138px;
    }

    .plan-card__content {
        min-height: auto;
        padding: 30px 24px 0;
    }

    .plan-card__footer {
        margin: 16px 24px 24px;
    }

    .feature-tabs {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .feature-tab {
        height: 68px;
        padding: 0 16px;
        font-size: 15px;
    }

    .feature-group__header,
    .feature-group__row {
        grid-template-columns: 1fr;
    }

    .feature-group__heading,
    .feature-group__desc-title,
    .feature-group__name,
    .feature-group__desc {
        padding: 16px 18px;
    }

    .feature-group__heading,
    .feature-group__name {
        border-right: 0;
    }

    .feature-group__serial,
    .feature-group__title {
        font-size: 28px;
    }

    .feature-group__row {
        min-height: auto;
    }

    .site-footer__inner {
        grid-template-columns: 1fr;
    }

    .site-footer__links {
        grid-template-columns: 1fr;
    }
}