/* 为什么电脑可以同时运行很多程序？ */

.multi-story {
    color: var(--article-text-color);
    font-size: 14px;
    line-height: 1.6;
}

.multi-story * { box-sizing: border-box; }
.multi-story img { display: block; max-width: 100%; }
.multi-story p { margin: 0 0 12px; }
.multi-story strong { color: var(--article-heading-color); }

.multi-section {
    margin-top: 22px;
    scroll-margin-top: 110px;
}

.multi-story .multi-section > h2 {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 0 0 8px;
    color: var(--article-heading-color);
    font-size: 20px;
    line-height: 1.35;
    font-weight: 900;
}

.multi-number {
    display: inline-flex;
    flex: 0 0 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #0752ff;
    color: #fff;
    font-size: 16px;
    font-weight: 700;
}

.multi-key,
.multi-note,
.multi-warning {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-top: 14px;
    padding: 14px 16px;
    border-radius: 14px;
}

.multi-key { background: #eaf5ff; }
.multi-note { background: #fff8e5; }
.multi-warning {
    border: 1px solid #ffd0dc;
    background: #fff2f6;
}

.multi-key img,
.multi-warning img {
    width: 54px;
    height: 54px;
    flex: 0 0 54px;
    object-fit: contain;
}

.multi-note__icon {
    display: inline-flex;
    width: 52px;
    height: 52px;
    flex: 0 0 52px;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}

.multi-story .multi-key h3,
.multi-story .multi-note h3,
.multi-story .multi-warning h3 {
    margin: 0 0 4px;
    font-size: 15px;
}

.multi-story .multi-key h3 { color: #0752ff; }
.multi-story .multi-note h3 { color: #9a6800; }
.multi-story .multi-warning h3 { color: #d83265; }

.multi-key p,
.multi-note p,
.multi-warning p { margin: 0; }

/* 总览 */

.multi-overview {
    display: grid;
    grid-template-columns: 1.5fr 35px 1fr 35px 1fr;
    gap: 8px;
    align-items: center;
    margin-top: 14px;
}

.multi-overview__apps {
    display: grid;
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: 7px;
}

.multi-overview__apps article {
    display: flex;
    min-height: 92px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    border: 1px solid #e1ebff;
    border-radius: 13px;
    background: #f9fbff;
}

.multi-overview__apps i {
    color: #0752ff;
    font-size: 28px;
}

.multi-overview__apps span {
    font-size: 11px;
    font-weight: 800;
}

.multi-overview__scheduler,
.multi-overview__cpu {
    display: flex;
    min-height: 165px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 13px;
    border-radius: 15px;
    text-align: center;
}

.multi-overview__scheduler { background: #f3efff; }
.multi-overview__cpu { background: #eef5ff; }

.multi-overview__scheduler > span {
    color: #7654d6;
    font-size: 54px;
}

.multi-overview__cpu img {
    width: 74px;
    height: 74px;
    object-fit: contain;
}

.multi-story .multi-overview h3 {
    margin: 7px 0 4px;
    color: var(--article-heading-color);
    font-size: 14px;
}

.multi-overview p {
    margin: 0;
    color: #617296;
    font-size: 10px;
}

.multi-overview__arrow,
.multi-process__arrow,
.multi-scheduler__arrow,
.multi-switch__arrow {
    color: #4f82ff;
    font-size: 23px;
    font-weight: 900;
    text-align: center;
}

/* 程序/进程/线程 */

.multi-process {
    display: grid;
    grid-template-columns: 1fr 35px 1.4fr 35px 1fr;
    gap: 8px;
    align-items: center;
    margin-top: 14px;
}

.multi-process__program,
.multi-process__process-box,
.multi-process__cpu {
    min-width: 0;
    min-height: 175px;
    padding: 14px;
    border-radius: 15px;
    text-align: center;
}

.multi-process__program { background: #eef5ff; }
.multi-process__process-box { background: #f3efff; }
.multi-process__cpu { background: #eef9f0; }

.multi-process__program > span {
    color: #0752ff;
    font-size: 58px;
}

.multi-process__cpu img {
    width: 72px;
    height: 72px;
    object-fit: contain;
    margin: 0 auto;
}

.multi-process__threads {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 5px;
    margin: 10px 0;
}

.multi-process__threads span {
    padding: 8px 4px;
    border-radius: 8px;
    background: #fff;
    color: #6049b8;
    font-size: 10px;
    font-weight: 800;
}

.multi-story .multi-process h3 {
    margin: 7px 0 4px;
    color: var(--article-heading-color);
    font-size: 15px;
}

.multi-process p {
    margin: 0;
    color: #617296;
    font-size: 10px;
}

/* 调度器 */

.multi-scheduler {
    display: grid;
    grid-template-columns: 1.5fr 35px 1fr 35px 1fr;
    gap: 8px;
    align-items: center;
    margin-top: 14px;
}

.multi-scheduler__ready,
.multi-scheduler__os,
.multi-scheduler__run {
    min-width: 0;
    padding: 14px;
    border-radius: 15px;
}

.multi-scheduler__ready { background: #f7f8fc; }
.multi-scheduler__os {
    background: #fff6df;
    text-align: center;
}
.multi-scheduler__run {
    background: #eef9f0;
    text-align: center;
}

.multi-scheduler__ready > div {
    display: grid;
    gap: 6px;
    margin-top: 8px;
}

.multi-scheduler__ready span {
    padding: 7px 9px;
    border-radius: 8px;
    background: #fff;
    color: #315176;
    font-size: 10px;
    font-weight: 800;
}

.multi-scheduler__os > span,
.multi-scheduler__run > span {
    font-size: 54px;
}

.multi-scheduler__os > span { color: #d58d00; }
.multi-scheduler__run > span { color: #2a9b55; }

.multi-story .multi-scheduler h3 {
    margin: 0 0 4px;
    color: var(--article-heading-color);
    font-size: 14px;
}

.multi-scheduler p {
    margin: 0;
    color: #617296;
    font-size: 10px;
}

/* 上下文切换 */

.multi-switch {
    display: grid;
    grid-template-columns: 1fr 22px 1fr 22px 1fr 22px 1fr;
    gap: 5px;
    align-items: center;
    margin-top: 14px;
}

.multi-switch article {
    position: relative;
    min-width: 0;
    min-height: 190px;
    padding: 14px 8px;
    border: 1px solid #e1ebff;
    border-radius: 14px;
    background: #f9fbff;
    text-align: center;
}

.multi-switch__badge {
    position: absolute;
    top: 8px;
    left: 8px;
    display: inline-flex;
    width: 25px;
    height: 25px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #0752ff;
    color: #fff;
    font-size: 11px;
    font-weight: 800;
}

.multi-switch article > i {
    margin: 15px 0 8px;
    color: #0752ff;
    font-size: 42px;
}

.multi-story .multi-switch h3 {
    margin: 0 0 4px;
    color: var(--article-heading-color);
    font-size: 13px;
}

.multi-switch p {
    margin: 0;
    color: #607296;
    font-size: 10px;
}

.multi-key--switch { background: #eaf5ff; }

/* I/O 等待 */

.multi-io {
    display: grid;
    grid-template-columns: repeat(3,minmax(0,1fr));
    gap: 10px;
    margin-top: 14px;
}

.multi-io > div {
    min-width: 0;
    min-height: 170px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 13px;
    border-radius: 15px;
    text-align: center;
}

.multi-io__browser { background: #eef5ff; }
.multi-io__wait { background: #fff6df; }
.multi-io__cpu { background: #eef9f0; }

.multi-io__browser > span,
.multi-io__wait > span {
    font-size: 56px;
}

.multi-io__browser > span { color: #0752ff; }
.multi-io__wait > span { color: #d58d00; }

.multi-io__cpu img {
    width: 72px;
    height: 72px;
    object-fit: contain;
}

.multi-story .multi-io h3 {
    margin: 7px 0 4px;
    color: var(--article-heading-color);
    font-size: 14px;
}

.multi-io p {
    margin: 0;
    color: #617296;
    font-size: 10px;
}

.multi-io-return {
    display: flex;
    gap: 11px;
    align-items: center;
    margin-top: 12px;
    padding: 13px 15px;
    border-radius: 14px;
    background: #f3efff;
}

.multi-io-return > span {
    color: #7654d6;
    font-size: 28px;
}

.multi-io-return p { margin: 0; }

.multi-note--io { background: #eef9f0; }

/* 多核 */

.multi-cores {
    display: grid;
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: 12px;
    margin-top: 14px;
}

.multi-cores > div {
    min-width: 0;
    padding: 16px;
    border-radius: 15px;
}

.multi-cores__single { background: #f7f8fc; }
.multi-cores__multi { background: #eef5ff; }

.multi-story .multi-cores h3 {
    margin: 0 0 10px;
    color: var(--article-heading-color);
    font-size: 15px;
}

.multi-cores__timeline {
    display: grid;
    grid-template-columns: repeat(5,1fr);
    gap: 4px;
}

.multi-cores__timeline span,
.multi-cores__grid span {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 7px;
    color: #fff;
    font-size: 11px;
    font-weight: 900;
}

.task-a { background: #5687e8; }
.task-b { background: #7558da; }
.task-c { background: #2aa05a; }
.task-d { background: #d58d00; }

.multi-cores__timeline span {
    min-height: 48px;
}

.multi-cores__grid {
    display: grid;
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: 7px;
}

.multi-cores__grid > div {
    display: grid;
    gap: 5px;
}

.multi-cores__grid strong {
    font-size: 10px;
}

.multi-cores__grid span {
    min-height: 42px;
}

.multi-cores p {
    margin: 10px 0 0;
    color: #617296;
    font-size: 10px;
}

/* 资源限制 */

.multi-limits {
    display: grid;
    grid-template-columns: repeat(4,minmax(0,1fr));
    gap: 10px;
    margin-top: 14px;
}

.multi-limits article {
    min-width: 0;
    padding: 14px 9px;
    border: 1px solid #e1ebff;
    border-radius: 14px;
    background: #f9fbff;
    text-align: center;
}

.multi-limits article > span {
    display: inline-flex;
    width: 64px;
    height: 64px;
    align-items: center;
    justify-content: center;
    margin-bottom: 6px;
    border-radius: 19px;
    background: #eaf3ff;
    color: #0752ff;
    font-size: 27px;
}

.multi-story .multi-limits h3 {
    margin: 0 0 4px;
    color: var(--article-heading-color);
    font-size: 13px;
}

.multi-limits p {
    margin: 0;
    color: #617296;
    font-size: 10px;
}

.multi-balance {
    display: flex;
    gap: 11px;
    align-items: center;
    margin-top: 12px;
    padding: 13px 15px;
    border-radius: 14px;
    background: #eef9f0;
}

.multi-balance > span {
    color: #2a9b55;
    font-size: 28px;
}

.multi-balance p { margin: 0; }

/* 总结 */

.multi-summary {
    display: flex;
    gap: 12px;
    margin-top: 22px;
    padding: 18px;
    border-radius: 16px;
    background: #e9f3ff;
    scroll-margin-top: 110px;
}

.multi-summary__icon {
    width: 54px;
    height: 54px;
    flex: 0 0 54px;
    object-fit: contain;
}

.multi-story .multi-summary h2 {
    margin: 0 0 7px;
    color: #0752ff;
    font-size: 19px;
}

.multi-summary ul {
    margin: 0;
    padding-left: 20px;
    line-height: 1.75;
}

.multi-summary__next {
    margin: 10px 0 0 !important;
    padding-top: 10px;
    border-top: 1px dashed #b8d3f6;
}

.multi-summary__next em {
    color: #0752ff;
    font-style: normal;
    font-weight: 800;
}

/* 翻页 */

.multi-pagination {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    margin-top: 14px;
}

.multi-pagination a {
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 49%;
    padding: 10px 13px;
    border: 1px solid #d9e7ff;
    border-radius: 12px;
    background: #ffffffb3;
    text-decoration: none;
    box-shadow: 0 3px 10px #c5dbff30;
}

.multi-pagination a:last-child { text-align: right; }

.multi-pagination strong {
    display: block;
    color: #0752ff;
    font-size: 16px;
}

.multi-pagination small {
    display: block;
    color: #576b9f;
    font-size: 12px;
}

.multi-pagination__arrow {
    display: inline-flex;
    width: 31px;
    height: 31px;
    flex: 0 0 31px;
    align-items: center;
    justify-content: center;
    border: 1px solid #d9e7ff;
    border-radius: 7px;
    color: #0752ff;
    font-size: 22px;
}

.multi-pagination a:hover { background: #edf4ff; }

.multi-pagination a:focus-visible {
    outline: 3px solid #0752ff;
    outline-offset: 3px;
}

@media (max-width: 900px) {
    .multi-switch {
        grid-template-columns: repeat(2,minmax(0,1fr));
        gap: 9px;
    }

    .multi-switch > .multi-switch__arrow { display: none; }
}

@media (max-width: 640px) {
    .multi-story {
        font-size: 12px;
        line-height: 1.6;
    }

    .multi-section { margin-top: 18px; }

    .multi-story .multi-section > h2 {
        gap: 9px;
        margin-bottom: 6px;
        font-size: 16px;
    }

    .multi-number {
        flex-basis: 31px;
        height: 31px;
        font-size: 14px;
    }

    .multi-overview,
    .multi-process,
    .multi-scheduler,
    .multi-switch {
        grid-template-columns: minmax(0,1fr);
        gap: 7px;
    }

    .multi-overview__arrow,
    .multi-process__arrow,
    .multi-scheduler__arrow,
    .multi-switch > .multi-switch__arrow {
        display: block;
        transform: rotate(90deg);
        line-height: 1;
    }

    .multi-key,
    .multi-note,
    .multi-warning {
        gap: 9px;
        padding: 11px 12px;
    }

    .multi-key img,
    .multi-warning img,
    .multi-note__icon {
        width: 44px;
        height: 44px;
        flex-basis: 44px;
    }

    .multi-switch article {
        min-height: auto;
        padding: 12px 9px;
    }

    .multi-io,
    .multi-cores {
        grid-template-columns: minmax(0,1fr);
        gap: 8px;
    }

    .multi-limits {
        grid-template-columns: repeat(2,minmax(0,1fr));
        gap: 8px;
    }

    .multi-summary {
        gap: 8px;
        padding: 14px;
    }

    .multi-summary__icon {
        width: 44px;
        height: 44px;
        flex-basis: 44px;
    }

    .multi-story .multi-summary h2 { font-size: 17px; }

    .multi-pagination { gap: 9px; }

    .multi-pagination a {
        flex: 1;
        min-width: 0;
        gap: 5px;
        padding: 8px 6px;
    }

    .multi-pagination strong { font-size: 13px; }

    .multi-pagination small {
        font-size: 10px;
        line-height: 1.35;
    }

    .multi-pagination__arrow {
        width: 26px;
        height: 27px;
        flex-basis: 26px;
        font-size: 18px;
    }
}