@charset "UTF-8";

/*================================================================

  KNOWLEDGE — 雑誌風メディア専用スタイル
  開発: BUDDY株式会社

  ・html font-size:10px（1rem = 10px）を踏襲
  ・配色はテーマ変数（--main-color 等）に追従
  ・single / archive / taxonomy で共用

=================================================================*/

:root {
    --kn-ink: #222420;
    --kn-sub: #6a6a6a;
    --kn-line: #e4e2da;
    --kn-paper: #ffffff;
    --kn-accent: var(--main-color);
    /* #7E7E1D */
    --kn-radius: 16px;
}

/*--------------------------------------------------
  共通
---------------------------------------------------*/
.kn_single,
.kn_index {
    color: var(--kn-ink);
    font-family: var(--font-notosans);
}

.kn_fv .kn_fv_lead {
    text-align: center;
    margin-top: 16px;
    color: var(--kn-sub);
    font-size: 1.5rem;
    line-height: 1.9;
}

/*==================================================
  アーカイブ / カテゴリー
===================================================*/
.kn_filter {
    margin: 48px auto 0;
    max-width: 1150px;
    padding: 0 20px;
}

.kn_filter ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 14px;
}

.kn_filter li a {
    display: inline-block;
    font-family: var(--font-jost);
    font-size: 1.4rem;
    letter-spacing: .06em;
    padding: 8px 20px;
    border: 1px solid var(--kn-line);
    border-radius: 999px;
    color: var(--kn-sub);
    background: var(--kn-paper);
    transition: all .35s ease;
}

.kn_filter li a:hover,
.kn_filter li a.is-current {
    color: #fff;
    background: var(--kn-accent);
    border-color: var(--kn-accent);
}

.kn_index {
    padding-top: 56px;
}

.kn_grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px 36px;
}

.kn_empty {
    text-align: center;
    color: var(--kn-sub);
    padding: 60px 0;
}

/* カード */
.kn_card {
    background: transparent;
}

.kn_card_link {
    display: block;
    color: inherit;
}

.kn_card_thumb {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--kn-radius);
    background: #eceae2;
}

.kn_card_thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .8s cubic-bezier(.2, .8, .2, 1);
}

.kn_card_link:hover .kn_card_thumb img {
    transform: scale(1.06);
}

.kn_card_cat {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
    font-family: var(--font-jost);
    font-size: 1.1rem;
    letter-spacing: .08em;
    padding: 5px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, .92);
    color: var(--kn-accent);
    font-weight: 600;
}

.kn_card_body {
    padding: 18px 4px 0;
}

.kn_card_ttl {
    font-family: var(--font-notosans);
    font-size: 1.9rem;
    font-weight: 700;
    line-height: 1.5;
    letter-spacing: .02em;
    transition: color .35s ease;
}

.kn_card_link:hover .kn_card_ttl {
    color: var(--kn-accent);
}

.kn_card_excerpt {
    margin-top: 10px;
    font-size: 1.35rem;
    line-height: 1.8;
    color: var(--kn-sub);
}

.kn_card_meta {
    margin-top: 14px;
    display: flex;
    align-items: center;
    gap: 14px;
    font-family: var(--font-jost);
    font-size: 1.2rem;
    letter-spacing: .04em;
    color: var(--kn-sub);
}

.kn_card_meta .kn_card_writer {
    position: relative;
    padding-left: 16px;
}

.kn_card_meta .kn_card_writer::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--kn-accent);
    transform: translateY(-50%);
}

/*==================================================
  個別記事 (single)
===================================================*/
.kn_single {
    padding-top: 160px;
}

/* ---- ヒーロー ---- */
.kn_hero_inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.kn_cats {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.kn_cats li a {
    font-family: var(--font-jost);
    font-size: 1.2rem;
    letter-spacing: .08em;
    color: var(--kn-accent);
    border: 1px solid var(--kn-accent);
    border-radius: 999px;
    padding: 4px 14px;
    transition: all .35s ease;
}

.kn_cats li a:hover {
    background: var(--kn-accent);
    color: #fff;
}

.kn_title {
    font-family: var(--font-notosans);
    font-size: 3.6rem;
    font-weight: 700;
    line-height: 1.45;
    letter-spacing: .02em;
}

.kn_lead {
    margin-top: 20px;
    font-size: 1.55rem;
    line-height: 2;
    color: var(--kn-sub);
}

.kn_hero_info {
    margin-top: 26px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 18px;
    font-family: var(--font-jost);
    font-size: 1.3rem;
    letter-spacing: .05em;
    color: var(--kn-sub);
}

.kn_hero_info .kn_readtime,
.kn_hero_info .kn_byline {
    position: relative;
    padding-left: 19px;
}

.kn_hero_info .kn_readtime::before,
.kn_hero_info .kn_byline::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 1px;
    height: 14px;
    background: var(--kn-line);
    transform: translateY(-50%);
}

.kn_hero_thumb {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    border-radius: var(--kn-radius);
    background: #eceae2;
}

.kn_hero_thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---- 本文（1カラム・中央寄せ） ---- */
.kn_body {
    margin-top: 64px;
}

.kn_main {
    min-width: 0;
}

/* ---- 目次（本文上部のボックス） ---- */
.kn_toc {
    background: #f3f2eb;
    border: 1px solid var(--kn-line);
    border-radius: var(--kn-radius);
    padding: 24px 28px 26px;
    margin-bottom: 56px;
}

.kn_toc_ttl {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-family: var(--font-jost);
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: .12em;
    color: var(--kn-ink);
    margin-bottom: 14px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--kn-line);
}

.kn_toc_toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    color: var(--kn-sub);
    font-family: var(--font-notosans);
    padding: 2px 4px;
}

.kn_toc_list,
.kn_toc_sub {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: kn-toc;
}

.kn_toc_h2 {
    counter-increment: kn-toc;
}

.kn_toc_h2>a {
    display: block;
    position: relative;
    padding: 8px 0 8px 28px;
    font-size: 1.4rem;
    line-height: 1.6;
    color: var(--kn-ink);
    font-weight: 500;
    transition: color .3s ease;
}

.kn_toc_h2>a::before {
    content: counter(kn-toc, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 8px;
    font-family: var(--font-jost);
    font-size: 1.15rem;
    color: var(--kn-accent);
    font-weight: 600;
}

.kn_toc_sub {
    padding-left: 28px;
}

.kn_toc_h3 a {
    display: block;
    position: relative;
    padding: 6px 0 6px 16px;
    font-size: 1.3rem;
    line-height: 1.55;
    color: var(--kn-sub);
    transition: color .3s ease;
}

.kn_toc_h3 a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14px;
    width: 7px;
    height: 1px;
    background: var(--kn-line);
}

.kn_toc a:hover,
.kn_toc a.is-active {
    color: var(--kn-accent);
}

.kn_toc.is-collapsed .kn_toc_list {
    display: none;
}

/* ---- 本文タイポグラフィ ---- */
.kn_content {
    font-size: 1.6rem;
    line-height: 2.05;
    letter-spacing: .03em;
    color: var(--kn-ink);
    word-break: break-word;
}

.kn_content> :first-child {
    margin-top: 0;
}

.kn_content h2 {
    font-family: var(--font-notosans);
    font-size: 2.6rem;
    font-weight: 700;
    line-height: 1.5;
    letter-spacing: .02em;
    margin: 64px 0 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--kn-ink);
    scroll-margin-top: 100px;
}

.kn_content h3 {
    font-family: var(--font-notosans);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.55;
    margin: 44px 0 18px;
    padding-left: 16px;
    border-left: 4px solid var(--kn-accent);
    scroll-margin-top: 100px;
}

.kn_content h4 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 32px 0 14px;
}

.kn_content p {
    margin: 0 0 28px;
    line-height: 2.05;
}

.kn_content a {
    color: var(--kn-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.kn_content a:hover {
    opacity: .7;
}

.kn_content strong {
    font-weight: 700;
    background: linear-gradient(transparent 60%, rgba(126, 126, 29, .18) 60%);
}

.kn_content ul,
.kn_content ol {
    margin: 0 0 28px;
    padding-left: 1.6em;
}

.kn_content ul li {
    list-style: disc;
    margin-bottom: 10px;
    line-height: 1.9;
}

.kn_content ol li {
    list-style: decimal;
    margin-bottom: 10px;
    line-height: 1.9;
}

.kn_content img,
.kn_content figure img {
    border-radius: var(--kn-radius);
    margin: 12px 0;
}

.kn_content figure {
    margin: 32px 0;
}

.kn_content figcaption {
    margin-top: 10px;
    font-size: 1.25rem;
    color: var(--kn-sub);
    text-align: center;
}

.kn_content blockquote {
    margin: 32px 0;
    padding: 24px 28px;
    background: #f3f2eb;
    border-radius: var(--kn-radius);
    border-left: 4px solid var(--kn-accent);
    font-size: 1.5rem;
    line-height: 1.95;
    color: #4a4a44;
}

.kn_content blockquote p:last-child {
    margin-bottom: 0;
}

.kn_content hr {
    border: none;
    border-top: 1px solid var(--kn-line);
    margin: 48px 0;
}

.kn_content table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 28px;
    font-size: 1.45rem;
}

.kn_content th,
.kn_content td {
    border: 1px solid var(--kn-line);
    padding: 12px 14px;
    text-align: left;
    line-height: 1.7;
}

.kn_content th {
    background: #f3f2eb;
    font-weight: 600;
}

/* ---- 執筆者エリア ---- */
.kn_writer {
    margin-top: 72px;
}

.kn_writer_label {
    font-family: var(--font-jost);
    font-size: 1.3rem;
    letter-spacing: .18em;
    color: var(--kn-accent);
    margin-bottom: 16px;
    text-align: center;
}

.kn_writer_card {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    background: var(--kn-paper);
    border: 1px solid var(--kn-line);
    border-radius: var(--kn-radius);
    padding: 32px;
}

.kn_writer_avatar {
    flex: 0 0 92px;
    width: 92px;
    height: 92px;
    border-radius: 50%;
    overflow: hidden;
    background: #eceae2;
}

.kn_writer_avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.kn_writer_name {
    font-size: 1.9rem;
    font-weight: 700;
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 12px;
}

.kn_writer_role {
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--kn-sub);
}

.kn_writer_bio {
    margin-top: 12px;
    font-size: 1.4rem;
    line-height: 1.95;
    color: #4a4a44;
}

.kn_writer_link {
    display: inline-block;
    margin-top: 14px;
    font-family: var(--font-jost);
    font-size: 1.3rem;
    letter-spacing: .04em;
    color: var(--kn-accent);
    border-bottom: 1px solid var(--kn-accent);
    padding-bottom: 2px;
}

/* ---- 前後ナビ ---- */
.kn_nav {
    margin-top: 80px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 24px;
    align-items: center;
}

.kn_nav a {
    color: var(--kn-ink);
    transition: color .3s ease;
}

.kn_nav a:hover {
    color: var(--kn-accent);
}

.kn_nav_prev a,
.kn_nav_next a {
    display: block;
    font-size: 1.35rem;
    line-height: 1.6;
}

.kn_nav_prev a span,
.kn_nav_next a span {
    display: block;
    font-family: var(--font-jost);
    font-size: 1.15rem;
    color: var(--kn-sub);
    margin-bottom: 6px;
}

.kn_nav_next {
    text-align: right;
}

.kn_nav_back a {
    display: inline-block;
    font-family: var(--font-jost);
    font-size: 1.3rem;
    letter-spacing: .06em;
    padding: 12px 28px;
    border-radius: 999px;
    border: 1px solid var(--kn-ink);
    white-space: nowrap;
}

.kn_nav_back a:hover {
    background: var(--kn-ink);
    color: #fff;
}

/*==================================================
  レスポンシブ
===================================================*/
@media (max-width: 1024px) {
    .kn_grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 28px;
    }
}

@media (max-width: 767px) {
    .kn_single {
        padding-top: 110px;
    }

    .kn_hero_inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .kn_hero_thumb {
        order: -1;
    }

    .kn_title {
        font-size: 2.6rem;
    }

    .kn_lead {
        font-size: 1.45rem;
    }

    .kn_grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .kn_card_ttl {
        font-size: 1.9rem;
    }

    .kn_content {
        font-size: 1.55rem;
    }

    .kn_content h2 {
        font-size: 2.2rem;
        margin: 48px 0 20px;
    }

    .kn_content h3 {
        font-size: 1.85rem;
    }

    .kn_writer_card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 28px 20px;
        gap: 16px;
    }

    .kn_writer_name {
        justify-content: center;
    }

    .kn_nav {
        grid-template-columns: 1fr;
        gap: 16px;
        text-align: center;
    }

    .kn_nav_next {
        text-align: center;
    }

    .kn_nav_back {
        order: -1;
    }
}