@charset "UTF-8";
/* ============================================================
   layout.css — ヘッダー / ヒーロー / セクション / カード / 一覧 / フッター
   ============================================================ */

/* ------------------------------------------------------------
   ロゴマーク（ホバーで2つのリンクがわずかに噛み合う）
   ------------------------------------------------------------ */
.logo-mark .logo-mark__link {
  transition: transform 0.35s var(--ease-out);
}

a:hover > .logo-mark .logo-mark__link--a { transform: translateX(1px); }
a:hover > .logo-mark .logo-mark__link--b { transform: translateX(-1px); }

/* ------------------------------------------------------------
   サイトヘッダー（すりガラスで追従。高さは低く保つ）
   ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: saturate(170%) blur(14px);
  -webkit-backdrop-filter: saturate(170%) blur(14px);
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 80%, transparent);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-height: 64px;
}

.site-header__brand {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.site-header__brand a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-heading);
  text-decoration: none;
}

.site-header__logo {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.site-header__name {
  display: flex;
  flex-direction: column;
}

.site-header__name small {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--color-text-faint);
}

/* PC用ナビ：pill型のセグメント */
.site-nav-desktop {
  display: none;
  margin-inline: auto;
}

.site-nav-desktop__list {
  display: flex;
  gap: 2px;
  padding: 4px;
  background: color-mix(in srgb, var(--color-bg-paper) 70%, transparent);
  border-radius: var(--radius-pill);
  box-shadow: var(--ring);
}

.site-nav-desktop__list a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition), color var(--transition);
}

.site-nav-desktop__icon {
  width: 15px;
  height: 15px;
  color: var(--cat-color);
  opacity: 0.85;
}

.site-nav-desktop__list a:hover {
  color: var(--color-heading);
  background: var(--color-bg-subtle);
}

.site-nav-desktop__list a[aria-current="page"] {
  color: var(--color-heading);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

.site-header__search {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 38px;
  padding: 0 14px 0 12px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-decoration: none;
}

.site-header__search svg {
  width: 16px;
  height: 16px;
}

.site-header__search:hover {
  color: var(--color-heading);
}

@media (min-width: 1040px) {
  .site-nav-desktop { display: block; }
  .site-header__actions { margin-left: 0; }
  .site-nav { display: none; }
}

@media (max-width: 480px) {
  .site-header__search-label { display: none; }
  .site-header__search { padding: 0; width: 38px; justify-content: center; }
}

/* ------------------------------------------------------------
   スマホ用メニュー（details）
   ------------------------------------------------------------ */
.site-nav {
  position: relative;
}

.site-nav__toggle {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  color: #fff;
  cursor: pointer;
  list-style: none;
}

.site-nav__toggle::-webkit-details-marker { display: none; }

.site-nav__toggle-bar,
.site-nav__toggle-bar::before,
.site-nav__toggle-bar::after {
  display: block;
  width: 15px;
  height: 1.8px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}

.site-nav__toggle-bar { position: relative; }

.site-nav__toggle-bar::before,
.site-nav__toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
}

.site-nav__toggle-bar::before { top: -5px; }
.site-nav__toggle-bar::after  { top: 5px; }

.site-nav[open] .site-nav__toggle-bar { background: transparent; }
.site-nav[open] .site-nav__toggle-bar::before { transform: translateY(5px) rotate(45deg); }
.site-nav[open] .site-nav__toggle-bar::after  { transform: translateY(-5px) rotate(-45deg); }

.site-nav__panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 50;
  width: min(360px, calc(100vw - 24px));
  padding: var(--space-4);
  background: var(--color-bg-paper);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-float);
  animation: nav-in 0.28s var(--ease-out);
}

@keyframes nav-in {
  from { opacity: 0; transform: translateY(-6px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}

.site-nav__heading {
  margin: 2px 6px var(--space-2);
}

.site-nav__list a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px 8px;
  border-radius: 12px;
  color: var(--color-heading);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.site-nav__list a:hover {
  background: var(--color-bg-subtle);
}

.site-nav__icon-wrap {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: var(--cat-color-subtle);
  color: var(--cat-color);
  flex-shrink: 0;
}

.site-nav__icon { width: 18px; height: 18px; }

.site-nav__text {
  display: flex;
  flex-direction: column;
  line-height: 1.35;
}

.site-nav__text small {
  font-size: var(--font-size-xxs);
  font-weight: 500;
  color: var(--color-text-muted);
}

.site-nav__arrow {
  width: 16px;
  height: 16px;
  margin-left: auto;
  color: var(--color-text-faint);
}

.site-nav__foot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.site-nav__foot .button {
  min-height: 42px;
  padding: 0 var(--space-3);
  font-size: var(--font-size-xs);
}

.site-nav__lang {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.site-nav__lang a {
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-pill);
  box-shadow: var(--ring);
  text-decoration: none;
}

.site-nav__lang a[aria-current="true"] {
  background: var(--color-ink);
  color: #fff;
}

/* 記事ページ：読了プログレス（ヘッダー下端の細い線） */
.read-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}

.read-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-bright));
  transform-origin: left center;
  transform: scaleX(0);
  box-shadow: 0 0 10px color-mix(in srgb, var(--color-primary-bright) 60%, transparent);
}

/* ------------------------------------------------------------
   ヒーロー（トップページ）
   ------------------------------------------------------------ */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3rem, 2rem + 4vw, 6rem) clamp(2.5rem, 2rem + 2vw, 4rem);
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 60% at 78% 30%, color-mix(in srgb, var(--color-primary-bright) 10%, transparent), transparent 70%),
    url("/images/site/hero-bg.webp") right center / cover no-repeat;
  opacity: 0.55;
}

.hero__bg::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--color-bg));
}

.hero__inner {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 980px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    gap: var(--space-8);
  }
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px 6px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-heading);
}

.hero__eyebrow-dot {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary-bright);
}

.hero__eyebrow-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1.5px solid var(--color-primary-bright);
  animation: ping 2.2s var(--ease-out) infinite;
}

@keyframes ping {
  0%   { transform: scale(0.6); opacity: 0.9; }
  80%, 100% { transform: scale(1.8); opacity: 0; }
}

.hero__title {
  margin-top: var(--space-6);
  font-size: var(--font-size-display);
  font-weight: 700;
  line-height: 1.22;
  letter-spacing: -0.035em;
  color: var(--color-heading);
}

.hero__title .hl {
  border-radius: 12px;
}

/* 見出しのハイライト語は途中で折り返さない */
.hero__title .hl { white-space: nowrap; }

.hero__desc {
  max-width: 34em;
  margin-top: var(--space-6);
  font-size: var(--font-size-lg);
  line-height: 1.9;
  color: var(--color-text-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-8);
  margin: var(--space-10) 0 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.hero__stat dt {
  font-size: var(--font-size-xxs);
  font-weight: 600;
  color: var(--color-text-muted);
}

.hero__stat dd {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.04em;
  color: var(--color-heading);
  font-variant-numeric: tabular-nums;
}

.hero__stat dd small {
  margin-left: 3px;
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--color-text-muted);
}

/* ヒーロー右側の図 */
.hero__visual {
  position: relative;
  max-width: 600px;
  width: 100%;
  margin-inline: auto;
}

.chain-art {
  width: 100%;
  height: auto;
  overflow: visible;
}

.chain-art__label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  fill: #78716c;
}

.chain-art__label--inv { fill: #a8a29e; }

.chain-art__hash {
  font-family: var(--font-mono);
  font-size: 11.5px;
  fill: #0c0a09;
}

.chain-art__hash--inv { fill: #e7e5e4; }

/* ブロックが順番にせり上がって並ぶ */
.chain-art__block,
.chain-art__float {
  animation: block-in 0.8s var(--ease-out) both;
  animation-delay: calc(var(--i) * 0.16s + 0.2s);
}

@keyframes block-in {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

/* フロートカードはゆっくり浮遊 */
.chain-art__float > rect:first-child {
  filter: drop-shadow(0 14px 24px rgba(17, 12, 46, 0.1));
}

.chain-art__float {
  animation: block-in 0.8s var(--ease-out) both, bob 6s ease-in-out infinite;
  animation-delay: calc(var(--i) * 0.16s + 0.2s), calc(var(--i) * 0.4s + 1.4s);
}

@keyframes bob {
  0%, 100% { translate: 0 0; }
  50%      { translate: 0 -6px; }
}

/* 流れる光（点線の上を光が走る） */
.chain-art__flow {
  stroke-dasharray: 16 84;
  animation: flow 3.2s linear infinite;
}

@keyframes flow {
  from { stroke-dashoffset: 100; }
  to   { stroke-dashoffset: 0; }
}

/* 取引パケット：線に沿って移動し、最後のブロックに吸い込まれる */
.chain-art__packet {
  offset-path: path("M118 150 C 190 150, 190 230, 262 230 S 334 310, 406 310");
  offset-rotate: 0deg;
  animation: packet 3.6s var(--ease-out) infinite;
}

.chain-art__packet--2 { animation-delay: 1.2s; }
.chain-art__packet--3 { animation-delay: 2.4s; }

@keyframes packet {
  0%   { offset-distance: 0%; opacity: 0; }
  10%  { opacity: 1; }
  85%  { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}

/* 承認中ブロック：データが書き込まれ、チェックが灯る */
.chain-art__typing {
  transform-box: fill-box;
  transform-origin: left center;
  animation: typing 3.6s var(--ease-out) infinite;
}

@keyframes typing {
  0%   { transform: scaleX(0.05); }
  60%  { transform: scaleX(1); }
  100% { transform: scaleX(1); }
}

.chain-art__verify {
  transform-box: fill-box;
  transform-origin: center;
  animation: verify 3.6s var(--ease-out) infinite;
}

@keyframes verify {
  0%, 55% { transform: scale(0); opacity: 0; }
  65%     { transform: scale(1.2); opacity: 1; }
  75%, 100% { transform: scale(1); opacity: 1; }
}

.chain-art__halo {
  transform-box: fill-box;
  transform-origin: center;
  animation: halo 3.6s ease-in-out infinite;
}

@keyframes halo {
  0%, 50% { opacity: 0.35; transform: scale(0.9); }
  70%     { opacity: 1; transform: scale(1.05); }
  100%    { opacity: 0.35; transform: scale(0.9); }
}

/* 承認数バー：1本ずつ積み上がる */
.chain-art__bars rect {
  transform-box: fill-box;
  transform-origin: center bottom;
  animation: bar-grow 0.7s var(--ease-out) both;
  animation-delay: calc(var(--b) * 0.12s + 1.1s);
}

@keyframes bar-grow {
  from { transform: scaleY(0.1); }
  to   { transform: scaleY(1); }
}

.chain-art__bar-pending {
  animation: bar-grow 0.7s var(--ease-out) both, pending 1.8s ease-in-out 2s infinite !important;
}

@keyframes pending {
  0%, 100% { fill: #efeeec; }
  50%      { fill: #cfe3fa; }
}

/* 最新記事のフロートカード（HTML。図の上に重ねる） */
.hero__float-card {
  position: absolute;
  left: 3%;
  bottom: 3%;
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: min(290px, 58%);
  padding: 14px 16px;
  border-radius: 18px;
  background: color-mix(in srgb, var(--color-bg-paper) 92%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow-float);
  color: var(--color-heading);
  text-decoration: none;
  animation: block-in 0.8s var(--ease-out) 1s both;
  transition: box-shadow var(--transition), transform var(--transition);
}

.hero__float-card:hover {
  color: var(--color-heading);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-primary) 40%, transparent), 0 24px 60px -12px rgba(17, 12, 46, 0.22);
}

.hero__float-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xxs);
  font-weight: 700;
  color: var(--color-primary);
}

.hero__live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #22a06b;
  box-shadow: 0 0 0 3px rgba(34, 160, 107, 0.18);
  animation: live 1.6s ease-in-out infinite;
}

@keyframes live {
  50% { box-shadow: 0 0 0 6px rgba(34, 160, 107, 0.05); }
}

.hero__float-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  line-height: 1.5;
}

.hero__float-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xxs);
  color: var(--color-text-muted);
}

.hero__float-arrow {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}


@media (max-width: 520px) {
  .hero__float-card { position: relative; left: auto; bottom: auto; width: 100%; margin-top: var(--space-4); }
}

/* ------------------------------------------------------------
   話題タグの帯（横に流れる。ホバーで止まる）
   ------------------------------------------------------------ */
.topics {
  overflow: hidden;
  padding-block: var(--space-4);
  border-block: 1px solid var(--color-border);
  background: var(--color-bg-paper);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.topics__track {
  display: flex;
  width: max-content;
  animation: marquee 60s linear infinite;
}

.topics:hover .topics__track,
.topics:focus-within .topics__track {
  animation-play-state: paused;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.topics__list {
  display: flex;
  gap: var(--space-2);
  padding-right: var(--space-2);
}

.topics__list a {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  box-shadow: var(--ring);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.topics__list a span {
  color: var(--color-primary-bright);
  font-family: var(--font-mono);
}

.topics__list a:hover {
  color: var(--color-primary);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--color-primary) 35%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  .topics__track { animation: none; }
  .topics { overflow-x: auto; }
}

/* ------------------------------------------------------------
   セクション見出し
   ------------------------------------------------------------ */
.section {
  margin-block: var(--section-gap);
}

.section-head {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
  max-width: 44em;
}

.section-head__title,
.section__title {
  font-size: clamp(1.625rem, 1.2rem + 1.6vw, 2.375rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.03em;
  color: var(--color-heading);
}

.section__title {
  margin-bottom: var(--space-8);
  font-size: var(--font-size-h2);
}

.section-head__desc {
  font-size: var(--font-size-base);
  line-height: 1.85;
  color: var(--color-text-muted);
}

/* ------------------------------------------------------------
   メタ情報の行（日付・読了時間）
   ------------------------------------------------------------ */
.meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.meta-row > span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.meta-row svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  opacity: 0.8;
}

/* ------------------------------------------------------------
   新着（大きい1本＋番号付きリスト）
   ------------------------------------------------------------ */
.latest {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 980px) {
  .latest { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); align-items: stretch; }
}

.feature-card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  transition: box-shadow var(--transition);
}

.feature-card__link:hover {
  color: inherit;
  box-shadow: var(--shadow-card-hover);
}

.feature-card__media {
  overflow: hidden;
  aspect-ratio: 16 / 8.2;
  background: var(--color-bg-sunken);
}

.feature-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}

.feature-card__link:hover .feature-card__media img {
  transform: scale(1.03);
}

.feature-card__body {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-6) var(--space-8);
  justify-items: start;
}

.feature-card__title {
  font-size: clamp(1.25rem, 1rem + 0.8vw, 1.625rem);
  line-height: 1.45;
  letter-spacing: -0.02em;
}

.feature-card__link:hover .feature-card__title {
  color: var(--color-primary);
}

.feature-card__excerpt {
  font-size: var(--font-size-sm);
  line-height: 1.85;
  color: var(--color-text-muted);
}

.latest-list {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.latest-list__item + .latest-list__item {
  border-top: 1px solid var(--color-border);
}

.latest-list__item {
  flex: 1;
}

.latest-list__item a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
  height: 100%;
  padding: var(--space-5) var(--space-5);
  color: inherit;
  text-decoration: none;
  transition: background-color var(--transition);
}

.latest-list__item a:hover {
  background: var(--color-bg);
  color: inherit;
}

.latest-list__num {
  align-self: start;
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text-faint);
  padding-top: 2px;
}

.latest-list__text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.latest-list__cat {
  font-size: var(--font-size-xxs);
  font-weight: 700;
  color: var(--cat-color);
}

.latest-list__title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  line-height: 1.55;
  color: var(--color-heading);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.latest-list__item a:hover .latest-list__title { color: var(--color-primary); }

.latest-list__date {
  font-size: var(--font-size-xxs);
  color: var(--color-text-muted);
}

.latest-list__thumb {
  width: 96px;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 10px;
  background: var(--color-bg-sunken);
}

@media (max-width: 420px) {
  .latest-list__thumb { width: 72px; }
}

/* ------------------------------------------------------------
   記事カードグリッド
   ------------------------------------------------------------ */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.card-grid--more {
  margin-top: var(--space-6);
}

@media (min-width: 640px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 980px) {
  .card-grid { grid-template-columns: repeat(3, 1fr); }
}

.card-grid--compact {
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .card-grid--compact { grid-template-columns: repeat(2, 1fr); }
}

/* ------------------------------------------------------------
   記事カード
   ⚠️ hoverでカード自体を動かさない。画像だけわずかに寄る
   ------------------------------------------------------------ */
.card {
  border-radius: var(--radius-lg);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
}

.card__link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

.card__link:hover { color: inherit; }

.card__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--color-bg-sunken);
}

.card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}

.card__link:hover .card__image {
  transform: scale(1.04);
}

.card__placeholder {
  display: grid;
  place-items: center;
  height: 100%;
  color: var(--cat-color);
  background: var(--cat-color-subtle);
}

.card__placeholder svg { width: 44px; height: 44px; }

.card__body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  flex: 1;
  padding: var(--space-5) var(--space-5) var(--space-5);
}

.card__category-icon {
  width: 13px;
  height: 13px;
}

.card__title {
  font-size: 1.0625rem;
  line-height: 1.55;
  letter-spacing: -0.01em;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__link:hover .card__title {
  color: var(--color-primary);
}

.card__excerpt {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  width: 100%;
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-border);
}

.card__arrow {
  width: 16px;
  height: 16px;
  margin-left: auto;
  color: var(--color-text-faint);
  transition: color var(--transition), transform var(--transition);
}

.card__link:hover .card__arrow {
  color: var(--color-primary);
  transform: translate(2px, -2px);
}

/* ------------------------------------------------------------
   学習ロードマップ
   ------------------------------------------------------------ */
.roadmap {
  position: relative;
}

.roadmap__rail {
  display: none;
}

.roadmap__list {
  display: grid;
  gap: var(--space-4);
  counter-reset: step;
}

@media (min-width: 640px) {
  .roadmap__list { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1080px) {
  .roadmap__list { grid-template-columns: repeat(5, 1fr); }

  /* PCでは5枚のカードの上を1本の線がつなぐ */
  .roadmap__rail {
    display: block;
    height: 24px;
    margin: 0 8% -12px;
    position: relative;
    z-index: 1;
  }

  .roadmap__line { width: 100%; height: 24px; }
}

.roadmap__line-draw {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 2.2s var(--ease-out) 0.3s;
}

.roadmap.is-inview .roadmap__line-draw,
html:not(.js-reveal-ready) .roadmap__line-draw {
  stroke-dashoffset: 0;
}

.roadmap-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  height: 100%;
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  transition: box-shadow var(--transition);
}

.roadmap-card:hover {
  color: inherit;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--cat-color) 45%, transparent), 0 16px 36px -12px color-mix(in srgb, var(--cat-color) 30%, transparent);
}

.roadmap-card__step {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
}

.roadmap-card__step span {
  font-size: 0.5625rem;
  letter-spacing: 0.14em;
  color: #a8a29e;
}

.roadmap-card__art {
  display: block;
  margin: var(--space-2) calc(var(--space-5) * -1) 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}

.roadmap-card__art img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;               /* 挿絵の背景色を紙面に溶かす */
  transition: transform 0.9s var(--ease-out);
}

.roadmap-card:hover .roadmap-card__art img {
  transform: translateY(-4px) scale(1.04);
}

.roadmap-card__art--icon {
  display: grid;
  place-items: center;
  color: var(--cat-color);
}

.roadmap-card__art--icon svg { width: 56px; height: 56px; }

.roadmap-card__name {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-heading);
}

.roadmap-card__icon {
  width: 18px;
  height: 18px;
  color: var(--cat-color);
}

.roadmap-card__desc {
  font-size: var(--font-size-xs);
  line-height: 1.8;
  color: var(--color-text-muted);
}

.roadmap-card__foot {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: auto;
  padding-top: var(--space-3);
}

.roadmap-card__count {
  font-size: var(--font-size-xxs);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.roadmap-card__count strong {
  margin-right: 2px;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-heading);
}

.roadmap-card__meter {
  flex: 1;
  height: 4px;
  border-radius: 4px;
  background: var(--color-bg-sunken);
  overflow: hidden;
}

.roadmap-card__meter span {
  display: block;
  width: var(--w);
  height: 100%;
  border-radius: inherit;
  background: var(--cat-color);
  transform-origin: left center;
  transform: scaleX(0);
  transition: transform 1.2s var(--ease-out) 0.4s;
}

.is-inview .roadmap-card__meter span,
html:not(.js-reveal-ready) .roadmap-card__meter span {
  transform: scaleX(1);
}

.roadmap-card__arrow {
  width: 18px;
  height: 18px;
  color: var(--color-text-faint);
  transition: transform var(--transition), color var(--transition);
}

.roadmap-card:hover .roadmap-card__arrow {
  color: var(--cat-color);
  transform: translateX(3px);
}

/* ------------------------------------------------------------
   3つの約束（インクのパネル）
   ------------------------------------------------------------ */
.promise__panel {
  position: relative;
  display: grid;
  gap: var(--space-8);
  padding: clamp(1.75rem, 1rem + 3vw, 3.5rem);
  border-radius: calc(var(--radius-lg) + 4px);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(59, 143, 240, 0.18), transparent 60%),
    var(--color-ink);
  color: #d6d3d1;
  overflow: hidden;
}

.promise__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 18px 18px;
  -webkit-mask-image: linear-gradient(135deg, transparent 30%, #000);
  mask-image: linear-gradient(135deg, transparent 30%, #000);
  pointer-events: none;
}

@media (min-width: 980px) {
  .promise__panel { grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr); align-items: start; }
}

.promise__head {
  position: relative;
  display: grid;
  gap: var(--space-4);
  justify-items: start;
}

.promise__head .eyebrow { color: #a8a29e; }
.promise__head .section-head__title { color: #fafaf9; }

.promise__more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #93c2f7;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
}

.promise__more svg { width: 16px; height: 16px; transition: transform var(--transition); }
.promise__more:hover { color: #cfe3fa; }
.promise__more:hover svg { transform: translateX(3px); }

.promise__mascot {
  width: 150px;
  margin-top: var(--space-4);
  filter: drop-shadow(0 14px 22px rgba(0, 0, 0, 0.35));
}

@media (max-width: 979px) {
  .promise__mascot { position: absolute; right: 0; top: 0; width: 96px; margin: 0; }
}

.promise__list {
  position: relative;
  display: grid;
  gap: var(--space-3);
}

.promise__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 2px var(--space-4);
  padding: var(--space-5);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.promise__icon {
  grid-row: span 2;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(59, 143, 240, 0.16);
  color: #93c2f7;
}

.promise__icon svg { width: 22px; height: 22px; }

.promise__item h3 {
  font-size: 1.0625rem;
  color: #fafaf9;
}

.promise__item p {
  font-size: var(--font-size-sm);
  line-height: 1.85;
  color: #bdb7b1;
}

/* ------------------------------------------------------------
   ページヘッダー（カテゴリー・検索・固定ページ）
   ------------------------------------------------------------ */
.page-hero {
  position: relative;
  margin-top: var(--space-4);
  padding: clamp(1.75rem, 1rem + 3vw, 3rem);
  border-radius: calc(var(--radius-lg) + 4px);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  isolation: isolate;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(70% 90% at 100% 0%, color-mix(in srgb, var(--cat-color, var(--color-primary)) 12%, transparent), transparent 65%),
    radial-gradient(#e7e5e4 1px, transparent 1px) 0 0 / 18px 18px;
  -webkit-mask-image: linear-gradient(100deg, transparent 20%, #000 75%);
  mask-image: linear-gradient(100deg, transparent 20%, #000 75%);
}

.page-hero__grid {
  display: grid;
  gap: var(--space-6);
  align-items: center;
}

@media (min-width: 820px) {
  .page-hero__grid { grid-template-columns: minmax(0, 1fr) 300px; }
}

.page-hero__body {
  display: grid;
  gap: var(--space-4);
  justify-items: start;
}

.page-hero__title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: clamp(1.75rem, 1.2rem + 2vw, 2.75rem);
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.page-hero__icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: var(--cat-color-subtle, var(--color-primary-subtle));
  color: var(--cat-color, var(--color-primary));
  flex-shrink: 0;
}

.page-hero__icon svg { width: 28px; height: 28px; }

.page-hero__desc {
  max-width: 38em;
  color: var(--color-text-muted);
  line-height: 1.85;
}

.page-hero__art {
  display: none;
}

@media (min-width: 820px) {
  .page-hero__art { display: block; }
  .page-hero__art img { width: 100%; mix-blend-mode: multiply; animation: float-y 7s ease-in-out infinite; }
}

@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

.page-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  box-shadow: var(--ring);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.stat-pill strong {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--color-heading);
}

.stat-pill svg { width: 14px; height: 14px; }

/* 他カテゴリーへの切り替えチップ */
.cat-switch {
  display: flex;
  gap: var(--space-2);
  margin-block: var(--space-6) var(--space-8);
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

.cat-switch::-webkit-scrollbar { display: none; }

.cat-switch a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

.cat-switch a svg { width: 15px; height: 15px; color: var(--cat-color); }
.cat-switch a:hover { color: var(--color-heading); box-shadow: var(--shadow-card-hover); }

.cat-switch a[aria-current="page"] {
  background: var(--color-ink);
  color: #fff;
}

.cat-switch a[aria-current="page"] svg { color: #93c2f7; }

/* 旧レイアウト互換（page-header を使う固定ページ用） */
.page-header {
  padding-block: var(--space-8) var(--space-6);
  max-width: var(--measure);
}

.page-header__title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-h1);
  letter-spacing: -0.03em;
}

.page-header__icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  color: var(--cat-color, var(--color-primary));
}

.page-header__desc {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
}

.page-header__count {
  margin-top: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ------------------------------------------------------------
   カテゴリー一覧（404などで使う小さいリスト）
   ------------------------------------------------------------ */
.category-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 640px) {
  .category-list { grid-template-columns: repeat(2, 1fr); }
}

.category-list__item a {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  transition: box-shadow var(--transition);
}

.category-list__item a:hover {
  color: inherit;
  box-shadow: var(--shadow-card-hover);
}

.category-list__icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 9px;
  border-radius: 12px;
  background: var(--cat-color-subtle);
  color: var(--cat-color);
  flex-shrink: 0;
}

.category-list__name {
  font-weight: 700;
  color: var(--color-heading);
}

.category-list__count {
  margin-left: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-text-muted);
}

/* ------------------------------------------------------------
   パンくず
   ------------------------------------------------------------ */
.breadcrumb {
  padding-block: var(--space-5) var(--space-3);
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-top: 1.5px solid var(--color-border-strong);
  border-right: 1.5px solid var(--color-border-strong);
  transform: rotate(45deg);
  margin-right: 4px;
}

.breadcrumb__item a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumb__item a:hover {
  color: var(--color-primary);
}

.breadcrumb__item [aria-current] {
  color: var(--color-heading);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 28em;
}

/* ------------------------------------------------------------
   ページネーション
   ------------------------------------------------------------ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-top: var(--space-12);
}

.pagination a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 42px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-pill);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  color: var(--color-heading);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
}

.pagination a svg { width: 16px; height: 16px; }

.pagination a:hover {
  box-shadow: var(--shadow-card-hover);
  color: var(--color-primary);
}

.pagination__status {
  padding: 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ------------------------------------------------------------
   検索フォーム
   ------------------------------------------------------------ */
.search-form {
  max-width: 44em;
}

.search-form__label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.search-form__row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 6px 6px 18px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card), 0 8px 24px -12px rgba(12, 10, 9, 0.12);
  transition: box-shadow var(--transition);
}

.search-form__row:focus-within {
  box-shadow: 0 0 0 2px var(--color-primary), 0 8px 24px -12px rgba(31, 111, 214, 0.35);
}

.search-form__row > svg {
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.search-form__input {
  flex: 1;
  min-width: 0;
  padding: var(--space-2) 0;
  border: none;
  background: transparent;
  font-size: var(--font-size-base);
  outline: none;
}

.search-form__button {
  height: 44px;
  padding: 0 var(--space-6);
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  color: #fff;
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.search-form__button:hover {
  background: var(--color-primary);
}

.search-suggest {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.search-suggest a {
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-paper);
  box-shadow: var(--ring);
  color: var(--color-text);
  text-decoration: none;
}

.search-suggest a:hover {
  color: var(--color-primary);
}

.search-result-count {
  margin-block: var(--space-8) var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.search-result-count strong {
  color: var(--color-heading);
}

/* ------------------------------------------------------------
   404ページ
   ------------------------------------------------------------ */
.notfound {
  display: grid;
  gap: var(--space-6);
  align-items: center;
  margin-top: var(--space-8);
  padding: clamp(1.75rem, 1rem + 3vw, 3.5rem);
  border-radius: calc(var(--radius-lg) + 4px);
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
}

@media (min-width: 820px) {
  .notfound { grid-template-columns: minmax(0, 1fr) 260px; }
}

.notfound__code {
  font-family: var(--font-mono);
  font-size: clamp(3.5rem, 2rem + 6vw, 6rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.06em;
  color: var(--color-heading);
}

.notfound__code span { color: var(--color-primary-bright); }

.notfound__title {
  margin-top: var(--space-4);
  font-size: var(--font-size-h2);
  letter-spacing: -0.02em;
}

.notfound__desc {
  margin-top: var(--space-3);
  color: var(--color-text-muted);
}

.notfound-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.notfound__art {
  max-width: 240px;
  margin-inline: auto;
  animation: float-y 6s ease-in-out infinite;
}

/* ------------------------------------------------------------
   サイトフッター（インクの面）
   ------------------------------------------------------------ */
.site-footer {
  position: relative;
  margin-top: var(--section-gap);
  padding-block: var(--space-16) var(--space-8);
  background: var(--color-ink);
  color: #a8a29e;
  overflow: hidden;
  isolation: isolate;
}

.site-footer__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: url("/images/site/footer-bg.webp") center / cover no-repeat;
  opacity: 0.55;
}

.site-footer__inner {
  display: grid;
  gap: var(--space-10);
}

.site-footer__top {
  display: grid;
  gap: var(--space-10);
}

@media (min-width: 820px) {
  .site-footer__top { grid-template-columns: 1.5fr 1fr 1fr; }
}

.site-footer__brand {
  display: grid;
  gap: var(--space-4);
  justify-items: start;
}

.site-footer__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fafaf9;
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
}

.site-footer__logo-link:hover { color: #fff; }

.site-footer__logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14);
}

.site-footer__tagline {
  max-width: 24em;
  font-size: var(--font-size-sm);
  line-height: 1.85;
}

.site-footer__cta { margin-top: var(--space-2); }

.site-footer__heading {
  margin-bottom: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--font-size-xxs);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  color: #78716c;
}

.site-footer__nav li + li { margin-top: 2px; }

.site-footer__nav a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-block: 6px;
  color: #d6d3d1;
  font-size: var(--font-size-sm);
  text-decoration: none;
}

.site-footer__nav a:hover { color: #fff; }

.site-footer__icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: #93c2f7;
}

.site-footer__count {
  margin-left: auto;
  padding: 0 8px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  font-family: var(--font-mono);
  font-size: var(--font-size-xxs);
  color: #a8a29e;
}

.site-footer__disclaimer {
  padding: var(--space-5);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
  font-size: var(--font-size-xs);
  line-height: 1.85;
  color: #a8a29e;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer__copyright {
  font-size: var(--font-size-xs);
  color: #78716c;
}

.site-footer__wordmark {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 1rem + 5vw, 4.5rem);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, 0.14);
  user-select: none;
}

/* ------------------------------------------------------------
   固定ページ（about）用のヒーロー拡張
   ------------------------------------------------------------ */
@media (min-width: 820px) {
  .page-hero__grid--wide { grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr); }
}

.page-hero__art--photo img {
  mix-blend-mode: multiply;
  border-radius: var(--radius);
  animation: none;
}

.page-hero__toc {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-hero__toc a {
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  box-shadow: var(--ring);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

.page-hero__toc a:hover { color: var(--color-primary); }

.page-hero--search .search-form { width: 100%; }

/* 検索結果ゼロ件 */
.search-empty {
  display: grid;
  justify-items: center;
  gap: var(--space-2);
  margin-top: var(--space-10);
  text-align: center;
}

.search-empty img { width: 140px; animation: float-y 6s ease-in-out infinite; }
.search-empty__title { font-weight: 700; color: var(--color-heading); }
.search-empty__text { font-size: var(--font-size-sm); color: var(--color-text-muted); }

/* 固定ページの本文（about / privacy） */
.is-page .article__body {
  max-width: 46rem;
  margin-top: var(--space-8);
}

.is-page .article__body h2::before { content: none; }
.is-page .article__body h2 { margin-top: var(--space-12); }

/* スマホではロードマップのカードを横長にして、挿絵を右に小さく置く */
@media (max-width: 639px) {
  .roadmap-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 96px;
    gap: 6px var(--space-3);
  }
  .roadmap-card > * { grid-column: 1; }
  .roadmap-card__art {
    grid-column: 2;
    grid-row: 1 / span 3;
    margin: 0;
    align-self: center;
  }
  .roadmap-card__foot { grid-column: 1 / -1; }
}


/* ------------------------------------------------------------
   R1レビュー対応
   ------------------------------------------------------------ */

/* 一覧のサムネイル：記事ごとに画風が違うので、彩度と明るさをそろえ、下端を紙面になじませる */
.card__media::after,
.feature-card__media { position: relative; }

.card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(12, 10, 9, 0.16));
  pointer-events: none;
}

.card__image,
.feature-card__media img,
.latest-list__thumb {
  filter: saturate(0.8) contrast(0.97);
}

/* 自動生成のタイトル画像の代わりに出すプレースホルダー（カテゴリー挿絵） */
.card__placeholder--art {
  background:
    radial-gradient(#e7e5e4 1px, transparent 1px) 0 0 / 14px 14px,
    var(--color-bg-subtle);
}

.card__placeholder--art img {
  width: 62%;
  height: auto;
  mix-blend-mode: multiply;
  filter: none;
}

.latest-list__thumb--art {
  object-fit: contain;
  background: var(--color-bg-subtle);
  mix-blend-mode: multiply;
  filter: none;
}

/* スマホ：STEPラベルを pill のまま保つ */
@media (max-width: 639px) {
  .roadmap-card__step { justify-self: start; width: max-content; }
}

/* スマホ：ヒーローを短くし、新着まで早く届くようにする */
@media (max-width: 520px) {
  .hero { padding-block: var(--space-8) var(--space-6); }
  .hero__inner { gap: var(--space-6); }
  .hero__desc { font-size: 0.9375rem; line-height: 1.85; margin-top: var(--space-4); }
  .hero__actions { flex-wrap: nowrap; margin-top: var(--space-6); }
  .hero__actions .button { flex: 1; padding-inline: 12px; font-size: var(--font-size-xs); }
  .hero__stats { margin-top: var(--space-6); padding-top: var(--space-4); }
  .hero__stat dd { font-size: 1.5rem; }
  .chain-art { display: none; }
  .hero__float-card { margin-top: 0; }
}

/* 話題タグの帯：一時停止ボタン（タッチ端末でも止められるように） */
.topics { position: relative; }

.topics__pause {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-top: -15px;
  border-radius: 50%;
  background: var(--color-bg-paper);
  box-shadow: var(--shadow-card);
  color: var(--color-text-muted);
}

.topics__pause svg { width: 12px; height: 12px; }
.topics__pause:hover { color: var(--color-heading); }
.topics.is-paused .topics__track { animation-play-state: paused; }
.topics__pause .icon-play { display: none; }
.topics.is-paused .topics__pause .icon-play { display: block; }
.topics.is-paused .topics__pause .icon-pause { display: none; }

/* マスク（両端のフェード）は流れるトラックだけに掛け、一時停止ボタンは外に置く */
.topics {
  -webkit-mask-image: none;
  mask-image: none;
  padding-right: 52px;
}

.topics__track {
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}

.topics__viewport {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}

.topics__viewport .topics__track {
  -webkit-mask-image: none;
  mask-image: none;
}

/* フッター細部 */
.site-footer__count { min-width: 2.25em; text-align: center; }
.site-footer__cta { align-self: start; }
.site-footer__brand { align-content: start; }

/* インクの面に置くマスコット：透過の縁を目立たせない */
.promise__mascot { mix-blend-mode: normal; }

/* スマホで検索フォームがカードからはみ出さないように */
.page-hero__body { min-width: 0; }
.page-hero--search .page-hero__body > * { max-width: 100%; }
.search-form__input { width: 0; }
@media (max-width: 520px) {
  .search-form__row { padding-left: 14px; }
  .search-form__button { padding: 0 var(--space-4); }
}

/* 旧記事（2026年1〜2月・WordPress移行）の画像：ネオン調の彩度を大きく落として紙面に寄せる。
   右下の透かしは少し拡大して枠の外へ出す */
.card__media.is-legacy img,
.latest-list__thumb.is-legacy {
  filter: saturate(0.45) contrast(0.92) brightness(1.04);
  object-position: 50% 40%;
  transform: scale(1.07);
}

.card__link:hover .card__media.is-legacy img { transform: scale(1.1); }

.card__media.is-legacy::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: color-mix(in srgb, var(--color-bg) 18%, transparent);
  mix-blend-mode: soft-light;
  pointer-events: none;
}