/*
Theme Name: Tansoman Media
Description: 脱炭素経営の教科書（株式会社タンソーマンGX）用のテーマ。Canary Media を参考にした黒×黄色のニュースメディア型デザイン。
Author: 株式会社タンソーマンGX
Version: 1.0.1
Requires at least: 5.5
Requires PHP: 7.0
Text Domain: tansoman-media
*/

:root {
  --ink: #0a0a0a;
  --paper: #ffffff;
  --accent: #ffd200;        /* ブランド色に変えるならここだけ */
  --accent-text: #8a6d00;   /* 白地で読める濃い黄色 */
  --on-dark: #ffffff;
  --on-dark-sub: rgba(255,255,255,.72);
  --on-dark-line: rgba(255,255,255,.16);
  --text: #111111;
  --text-sub: #5c5c5c;
  --line: #e4e4e4;
  --tint: #f6f5f1;
  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
  --wrap: 1240px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--text); font-family: var(--sans); font-size: 15px; line-height: 1.7; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; z-index: 100; background: var(--accent); color: var(--ink); padding: 8px 12px; }
.screen-reader-text { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(1px,1px,1px,1px); }

.ttl { font-family: var(--serif); font-weight: 700; margin: 0; letter-spacing: .01em; }
.ttl a:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.cat { display: inline-block; font-size: 12px; font-weight: 700; color: var(--accent-text); margin: 0 0 6px; letter-spacing: .04em; }
.by { font-size: 12px; color: var(--text-sub); margin: 8px 0 0; }
.by span { margin: 0 2px; }

/* サムネイル：アイキャッチの文字が切れないよう全体を見せる */
.lead-img, .row-thumb, .list-thumb, .card-thumb { display: block; aspect-ratio: 16 / 9; overflow: hidden; }
.lead-img img, .row-thumb img, .list-thumb img, .card-thumb img { display: block; width: 100%; height: 100%; object-fit: contain; }

/* ---------- ヘッダー ---------- */
.dark { background: var(--ink); color: var(--on-dark); }
.dark .cat { color: var(--accent); }
.dark .by { color: var(--on-dark-sub); }
.masthead { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 22px 0 18px; }
.masthead .corp { font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.logo { text-align: center; }
.logo .mark { font-family: var(--serif); font-weight: 900; font-size: 40px; line-height: 1.15; letter-spacing: .06em; margin: 0; }
.logo .tag { font-size: 13px; color: var(--on-dark-sub); margin-top: 6px; }
.cta { justify-self: end; background: var(--accent); color: var(--ink); font-size: 13px; font-weight: 700; padding: 9px 16px; border-radius: 3px; }
.cta:hover, .btn:hover { filter: brightness(.95); }
.nav { border-top: 1px solid var(--on-dark-line); border-bottom: 1px solid var(--on-dark-line); }
.nav-inner { position: relative; display: flex; align-items: center; justify-content: center; }
.nav ul { display: flex; justify-content: center; gap: 28px; list-style: none; margin: 0; padding: 13px 0; font-family: var(--serif); font-size: 14px; }
.nav li { white-space: nowrap; }
.nav a { color: var(--on-dark-sub); }
.nav a:hover { color: var(--on-dark); }
.search-toggle { position: absolute; right: 24px; top: 50%; transform: translateY(-50%); }
.search-toggle summary { list-style: none; cursor: pointer; color: var(--on-dark-sub); display: flex; padding: 6px; }
.search-toggle summary::-webkit-details-marker { display: none; }
.search-toggle summary:hover { color: var(--on-dark); }
.search-pop { position: absolute; right: 0; top: calc(100% + 10px); width: 320px; background: var(--paper); padding: 12px; box-shadow: 0 8px 24px rgba(0,0,0,.25); z-index: 20; }

.search-form { display: flex; gap: 6px; }
.search-form input { flex: 1; min-width: 0; border: 1px solid #bdbdbd; padding: 9px 12px; font: inherit; font-size: 14px; border-radius: 3px; color: var(--text); background: var(--paper); }
.search-form button { background: var(--ink); color: var(--paper); border: 0; font: inherit; font-size: 13px; font-weight: 700; padding: 0 16px; border-radius: 3px; cursor: pointer; }

/* ---------- トップ ---------- */
.hero { display: grid; grid-template-columns: 300px 1fr 300px; gap: 28px; padding: 28px 0 32px; }
.lead-text .ttl { font-size: 34px; line-height: 1.35; }
.lead-text .ex { color: var(--on-dark-sub); font-size: 14px; margin: 14px 0 0; }
.lead-img { align-self: start; }
.hero-side { display: flex; flex-direction: column; }
.side-item { padding: 16px 0; border-top: 1px solid var(--on-dark-line); }
.side-item:first-child { border-top: 0; padding-top: 0; }
.side-item .ttl { font-size: 17px; line-height: 1.5; }
.hero-row { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--on-dark-line); padding: 22px 0 36px; }
.row-item { display: grid; grid-template-columns: 1fr 112px; gap: 14px; padding: 0 20px; border-left: 1px solid var(--on-dark-line); }
.row-item:first-child { padding-left: 0; border-left: 0; }
.row-item .ttl { font-size: 15px; line-height: 1.55; }
.row-thumb { align-self: start; margin-top: 4px; }

.consult { background: #161616; color: var(--on-dark); }
.consult .wrap { display: flex; align-items: center; justify-content: space-between; gap: 32px; padding-top: 30px; padding-bottom: 30px; }
.consult h2 { font-family: var(--serif); font-size: 22px; margin: 0; }
.consult p { margin: 4px 0 0; color: var(--on-dark-sub); font-size: 13px; }
.btn { display: inline-block; background: var(--accent); color: var(--ink); font-weight: 700; font-size: 13px; padding: 11px 20px; border-radius: 3px; white-space: nowrap; }

.main { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 48px; padding: 44px 0 56px; }
.sec-h { font-family: var(--sans); font-size: 13px; font-weight: 700; letter-spacing: .12em; color: var(--text-sub); border-bottom: 2px solid var(--ink); padding-bottom: 10px; margin: 0 0 4px; }
.list-item { display: grid; grid-template-columns: 260px 1fr; gap: 24px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.list-thumb { align-self: start; }
.list-body .ttl { font-size: 21px; line-height: 1.5; }
.list-body .ex { color: var(--text-sub); font-size: 14px; margin: 10px 0 0; }
.more { display: inline-block; margin-top: 28px; border: 1px solid var(--ink); padding: 11px 26px; font-size: 13px; font-weight: 700; }
.more:hover { background: var(--ink); color: var(--paper); }
.empty { padding: 24px 0; }

.sidebar .box { margin-bottom: 32px; }
.svc { background: var(--ink); color: var(--on-dark); padding: 22px 24px; }
.svc .label { display: inline-block; background: var(--accent); color: var(--ink); font-size: 11px; font-weight: 700; padding: 3px 8px; letter-spacing: .08em; }
.svc h3 { font-family: var(--serif); font-size: 18px; line-height: 1.5; margin: 12px 0 8px; }
.svc p { font-size: 13px; color: var(--on-dark-sub); margin: 0 0 16px; }
.sidebar .search-form { margin-top: 14px; }
.cats { list-style: none; margin: 0; padding: 0; }
.cats li { border-bottom: 1px solid var(--line); }
.cats a { display: flex; justify-content: space-between; padding: 12px 0; font-family: var(--serif); font-weight: 600; }
.cats a::after { content: "→"; color: var(--text-sub); }
.cats a:hover { color: var(--accent-text); }

.band { background: var(--tint); padding: 44px 0 52px; }
.band-head { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 2px solid var(--ink); padding-bottom: 10px; margin-bottom: 24px; }
.band-head h2 { font-family: var(--serif); font-size: 24px; margin: 0; }
.band-head a { font-size: 13px; font-weight: 700; }
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.card-thumb { margin-bottom: 12px; }
.card .ttl { font-size: 16px; line-height: 1.55; }

/* ---------- 一覧ページ ---------- */
.archive-head .wrap { padding-top: 40px; padding-bottom: 40px; }
.archive-head .ttl { font-size: 36px; line-height: 1.3; }
.archive-head .desc { color: var(--on-dark-sub); margin: 12px 0 0; max-width: 720px; }
.pagination { margin-top: 32px; }
.pagination .nav-links { display: flex; flex-wrap: wrap; gap: 6px; }
.pagination .page-numbers { display: inline-block; min-width: 40px; text-align: center; padding: 8px 12px; border: 1px solid var(--line); font-size: 14px; }
.pagination .page-numbers.current { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.pagination a.page-numbers:hover { border-color: var(--ink); }
.pagination .dots { border: 0; }

/* ---------- 記事ページ ---------- */
.narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.entry-head { padding: 48px 0 0; }
.entry-title { font-size: 38px; line-height: 1.4; }
.entry-head .dek { font-size: 17px; color: var(--text-sub); margin: 16px 0 0; }
.entry-head .by { font-size: 13px; padding-bottom: 20px; border-bottom: 1px solid var(--line); margin-top: 18px; }
.entry-img { max-width: 1000px; margin: 32px auto 0; padding: 0 24px; }
.entry-img img { display: block; width: 100%; height: auto; }

.entry-content { font-size: 17px; line-height: 2; padding-top: 40px; padding-bottom: 40px; overflow-wrap: anywhere; }
.entry-content > * { margin-top: 0; margin-bottom: 1.6em; }
.entry-content a { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.entry-content a:hover { background: rgba(255,210,0,.25); }
.entry-content h2 { font-family: var(--serif); font-size: 27px; line-height: 1.5; margin: 2.4em 0 1em; padding-top: 18px; border-top: 3px solid var(--ink); }
.entry-content h3 { font-family: var(--serif); font-size: 21px; line-height: 1.55; margin: 2em 0 .8em; padding-left: 14px; border-left: 4px solid var(--accent); }
.entry-content h4 { font-size: 18px; margin: 1.8em 0 .6em; }
.entry-content strong { font-weight: 700; background: linear-gradient(transparent 62%, rgba(255,210,0,.45) 62%); }
.entry-content ul, .entry-content ol { padding-left: 1.4em; }
.entry-content li { margin-bottom: .4em; }
.entry-content img { height: auto; }
.entry-content figure { margin-left: 0; margin-right: 0; }
.entry-content figcaption { font-size: 13px; color: var(--text-sub); text-align: center; margin-top: 8px; }
.entry-content blockquote { margin-left: 0; margin-right: 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--line); color: var(--text-sub); }
.entry-content table { width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.7; }
.entry-content th, .entry-content td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.entry-content th, .entry-content thead td { background: var(--tint); font-weight: 700; }
.entry-content .wp-block-table { overflow-x: auto; }
.entry-content iframe { max-width: 100%; }
.entry-content hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }
.entry-content .wp-block-button__link { background: var(--ink); color: var(--paper); text-decoration: none; border-radius: 3px; }
.entry-tags { display: flex; flex-wrap: wrap; gap: 8px; padding-bottom: 40px; font-size: 13px; }
.entry-tags a { border: 1px solid var(--line); padding: 4px 10px; }

/* 記事末の著者・新着（VK Post Author Display） */
.entry-content #padSection { font-size: 14px; line-height: 1.7; border-top: 2px solid var(--ink); padding-top: 20px; }
.entry-content #padSection a { text-decoration: none; }
.entry-content #padSection h4, .entry-content #padSection .pad_title { font-size: 13px; letter-spacing: .1em; color: var(--text-sub); }

/* ---------- フッター ---------- */
.site-footer { background: var(--ink); color: var(--on-dark-sub); padding: 48px 0 32px; font-size: 13px; }
.site-footer .top { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; border-bottom: 1px solid var(--on-dark-line); padding-bottom: 32px; }
.site-footer .mark { font-family: var(--serif); font-weight: 900; font-size: 24px; color: var(--on-dark); letter-spacing: .06em; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, auto); gap: 8px 40px; }
.site-footer a:hover { color: var(--on-dark); }
.site-footer .copy { margin-top: 20px; font-size: 12px; }

@media (max-width: 1080px) {
  .nav-inner { justify-content: flex-start; padding-right: 56px; }
  .nav ul { justify-content: flex-start; overflow-x: auto; gap: 22px; scrollbar-width: none; }
  .nav ul::-webkit-scrollbar { display: none; }
  .hero { grid-template-columns: 1fr 1fr; }
  .lead-img { order: -1; grid-column: 1 / -1; }
  .hero-row, .cards { grid-template-columns: repeat(2, 1fr); row-gap: 24px; }
  .row-item:nth-child(3) { padding-left: 0; border-left: 0; }
  .main { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 720px) {
  .wrap { padding: 0 16px; }
  .narrow, .entry-img { padding: 0 16px; }
  .masthead { grid-template-columns: 1fr auto; gap: 12px; }
  .masthead .corp { display: none; }
  .logo { text-align: left; }
  .logo .mark { font-size: 26px; }
  .logo .tag { font-size: 11px; }
  .nav-inner { padding-right: 48px; }
  .nav ul { gap: 20px; padding: 12px 0; }
  .search-toggle { right: 12px; }
  .search-pop { width: calc(100vw - 32px); right: -4px; }
  .hero { grid-template-columns: 1fr; gap: 20px; }
  .lead-text .ttl { font-size: 25px; }
  .side-item:first-child { border-top: 1px solid var(--on-dark-line); padding-top: 16px; }
  .hero-row, .cards { grid-template-columns: 1fr; }
  .row-item { padding: 0 0 18px; border-left: 0; border-bottom: 1px solid var(--on-dark-line); }
  .row-item:nth-child(n) { padding-left: 0; }
  .row-item:last-child { border-bottom: 0; }
  .consult .wrap { flex-direction: column; align-items: stretch; gap: 16px; }
  .consult .btn { text-align: center; }
  .list-item { grid-template-columns: 120px 1fr; gap: 14px; padding: 18px 0; }
  .list-body .ttl { font-size: 16px; }
  .list-body .ex { display: none; }
  .archive-head .ttl { font-size: 26px; }
  .entry-head { padding-top: 28px; }
  .entry-title { font-size: 25px; }
  .entry-content { font-size: 16px; line-height: 1.95; padding-top: 28px; }
  .entry-content h2 { font-size: 22px; }
  .entry-content h3 { font-size: 18px; }
}