.rules {
    display: flex;
    gap: 40px;
    align-items: flex-start;
    padding-top: 20px;
    padding-bottom: 40px;
}

.rules__title {
    font-size: 37px;
    font-weight: 700;
    letter-spacing: -0.74px;
    line-height: 1.15;
    white-space: nowrap;
    position: sticky;
    top: 24px;
    flex-shrink: 0;
}

.rules__list {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 0;
}

/* Accordion item */
.rules__item {
    border-radius: 26px;
    border: 1px solid rgba(255, 255, 255, 0.04);
    background: radial-gradient(ellipse at left bottom, rgba(21, 21, 21, 1) 0%, rgba(27, 27, 27, 1) 97%);
    overflow: hidden;
}

.rules__item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 12px 12px 12px 28px;
    cursor: pointer;
    gap: 12px;
}

.rules__item-title {
    font-size: 16px;
    font-weight: 700;
    text-align: left;
}

.rules__item-toggle {
    width: 50px;
    height: 50px;
    min-width: 50px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background 0.2s;
}

.rules__item-toggle svg {
    transition: transform 0.3s;
    transform: rotate(180deg);
}

.rules__item.open > .rules__item-header .rules__item-toggle svg {
    transform: rotate(0deg);
}

.rules__item-header:hover .rules__item-toggle {
    background: rgba(255, 255, 255, 0.08);
}

/* Content collapse — grid trick */
.rules__item-content {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.35s ease;
}

.rules__item.open > .rules__item-content {
    grid-template-rows: 1fr;
}

.rules__item-content > .rules__item-inner {
    overflow: hidden;
    min-height: 0;
}

/* Text styling */
.rules__text {
    padding: 0 28px 28px;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.3;
    letter-spacing: -0.14px;
    color: white;
}

.rules__text p {
    margin-bottom: 0;
}

.rules__text p + p {
    margin-top: 2px;
}

.rules__num {
    color: #ff005a;
}

.rules__num--underline {
    text-decoration: underline;
}

.rules__text--note {
    margin-top: 12px;
}

/* Nested item */
.rules__item--nested {
    margin: 12px 28px 28px;
    border-radius: 26px;
}

/* ===== Adaptive ===== */

@media (max-width: 960px) {
    .rules {
        flex-direction: column;
        gap: 24px;
    }

    .rules__title {
        position: static;
        font-size: 32px;
    }
}

@media (max-width: 580px) {
    .rules__title {
        font-size: 28px;
    }

    .rules__item {
        border-radius: 22px;
    }

    .rules__item-header {
        padding: 10px 10px 10px 20px;
    }

    .rules__item-toggle {
        width: 44px;
        height: 44px;
        min-width: 44px;
        border-radius: 14px;
    }

    .rules__text {
        padding: 0 20px 20px;
        font-size: 13px;
    }

    .rules__item--nested {
        margin: 10px 20px 20px;
        border-radius: 22px;
    }
}

@media (max-width: 460px) {
    .rules {
        padding-top: 10px;
        gap: 18px;
    }

    .rules__title {
        font-size: 26px;
    }

    .rules__item {
        border-radius: 20px;
    }

    .rules__item-header {
        padding: 8px 8px 8px 16px;
    }

    .rules__item-title {
        font-size: 14px;
    }

    .rules__item-toggle {
        width: 40px;
        height: 40px;
        min-width: 40px;
        border-radius: 12px;
    }

    .rules__item-toggle svg {
        width: 16px;
        height: 16px;
    }

    .rules__text {
        padding: 0 16px 16px;
        font-size: 12px;
    }

    .rules__item--nested {
        margin: 8px 16px 16px;
        border-radius: 20px;
    }
}