:root {
  color-scheme: light;
  --bg: #fbfaf7;
  --panel: #ffffff;
  --ink: #161a1b;
  --body: #394445;
  --muted: #687576;
  --line: #dddcd6;
  --line-dark: rgba(255, 255, 255, .16);
  --accent: #126f70;
  --accent-soft: #e6efec;
  --warm: #f1ede5;
  --warn: #946516;
  --bad: #a33c3c;
  --header: #111719;
  --radius: 6px;
  --content: 1240px;
  --font-body: "Noto Sans JP", system-ui, sans-serif;
  --font-display: "Outfit", "Noto Sans JP", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100dvh;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  letter-spacing: 0;
}
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
p, h1, h2, h3 { margin-top: 0; }
h1, h2, h3 { font-family: var(--font-display); letter-spacing: 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 36px;
  height: 82px;
  padding: 0 max(calc((100% - var(--content)) / 2), 24px);
  border-bottom: 1px solid rgba(255,255,255,.1);
  background: var(--header);
  color: #f6f6f2;
}
.home-page .site-header {
  position: fixed;
  right: 0;
  left: 0;
  height: 96px;
  border-bottom-color: transparent;
  background: transparent;
  transition: background .22s ease, border-color .22s ease, height .22s ease;
}
.home-page .site-header.is-scrolled {
  height: 82px;
  border-bottom-color: rgba(255,255,255,.1);
  background: rgba(17,23,25,.96);
}
.brand { display: inline-flex; align-items: center; width: 158px; }
.brand img {
  display: block;
  width: 150px;
  height: auto;
  object-fit: contain;
  transition: width .22s ease, transform .22s ease;
}
.home-page .brand { width: 196px; }
.home-page .brand img { width: 188px; }
.home-page .site-header.is-scrolled .brand { width: 158px; }
.home-page .site-header.is-scrolled .brand img { width: 150px; }
.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 30px;
}
.nav-links a {
  color: #bbc4c5;
  font-size: 14px;
  font-weight: 500;
  transition: color .18s ease;
}
.nav-links a:hover { color: #fff; }
.nav-links a.active { color: #fff; }
.join-button,
.primary-link,
.secondary-link {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border-radius: var(--radius);
  font-weight: 700;
  transition: transform .16s ease, background .16s ease, border-color .16s ease;
}
.join-button,
.primary-link {
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
}
.join-button { min-height: 42px; margin-left: 8px; }
.secondary-link {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--body);
}
.join-button:hover, .primary-link:hover { background: #105f61; }
.secondary-link:hover { border-color: #b1b0a9; background: rgba(255,255,255,.48); }
.join-button:active, .primary-link:active, .secondary-link:active { transform: translateY(1px); }

.hero-section {
  min-height: min(680px, calc(100dvh - 72px));
  background:
    linear-gradient(90deg, rgba(12,18,20,.9) 0%, rgba(12,18,20,.79) 36%, rgba(12,18,20,.3) 65%, rgba(12,18,20,.2) 100%),
    url("/assets/media/citizen-observation-hero.webp") center center / cover no-repeat;
  color: #fff;
}
.hero-inner {
  display: flex;
  align-items: center;
  width: min(calc(100% - 48px), var(--content));
  min-height: inherit;
  margin: 0 auto;
  padding: 54px 0 60px;
}
.hero-copy { width: min(600px, 100%); }
.eyebrow {
  margin: 0 0 17px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}
.hero-section .eyebrow { color: #8dc8c7; }
h1 {
  margin-bottom: 22px;
  font-size: clamp(43px, 4.6vw, 64px);
  font-weight: 800;
  line-height: 1.14;
}
.hero-lead {
  max-width: 550px;
  margin-bottom: 0;
  color: rgba(255,255,255,.82);
  font-size: 16px;
  line-height: 2;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 33px;
}
.hero-section .secondary-link {
  border-color: rgba(255,255,255,.38);
  color: #fff;
}
.hero-section .secondary-link:hover { background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.64); }

.notice, .section-shell, .trust-strip, .site-footer {
  width: min(calc(100% - 48px), var(--content));
  margin-left: auto;
  margin-right: auto;
}
.notice {
  margin-top: 20px;
  padding: 14px 18px;
  border-radius: var(--radius);
  font-weight: 700;
}
.notice.error { border: 1px solid rgba(163,60,60,.25); background: rgba(163,60,60,.06); color: var(--bad); }
.notice.success { border: 1px solid rgba(18,111,112,.25); background: var(--accent-soft); color: var(--accent); }

.trust-strip {
  display: grid;
  grid-template-columns: .95fr 1.05fr 1fr;
  margin-top: 34px;
  margin-bottom: 66px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.trust-strip div {
  min-width: 0;
  padding: 23px 30px 24px 0;
}
.trust-strip div + div {
  padding-left: 30px;
  border-left: 1px solid var(--line);
}
.trust-strip small {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}
.trust-strip strong, .trust-strip span { display: block; overflow-wrap: anywhere; }
.trust-strip strong { margin-bottom: 7px; font-size: 16px; }
.trust-strip span { color: var(--muted); font-size: 13px; line-height: 1.72; }

.section-shell { margin-bottom: 84px; scroll-margin-top: 90px; }
.section-heading {
  display: grid;
  grid-template-columns: minmax(340px, .9fr) minmax(300px, .62fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 30px;
}
.section-heading.compact { display: block; margin-bottom: 26px; }
.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(31px, 3.4vw, 46px);
  font-weight: 700;
  line-height: 1.23;
}
.section-heading p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.9;
}

.join-section {
  display: grid;
  grid-template-columns: minmax(360px, 1fr) minmax(330px, 440px);
  gap: 60px;
  align-items: center;
  width: 100%;
  max-width: none;
  margin-bottom: 78px;
  padding: 56px max(calc((100% - var(--content)) / 2), 24px);
  background: var(--accent-soft);
}
.join-copy { max-width: 650px; }
.join-copy h2 {
  margin-bottom: 17px;
  font-size: clamp(34px, 3.4vw, 46px);
  line-height: 1.22;
}
.join-copy > p:last-of-type { max-width: 570px; margin-bottom: 22px; color: var(--body); line-height: 1.85; }
.release-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.release-list li {
  padding: 9px 12px;
  border: 1px solid rgba(18,111,112,.2);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
}
.panel, .level-panel, .rank-panel, .exam-form fieldset, .case-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.panel, .level-panel, .rank-panel, .exam-form fieldset, .case-card { padding: 25px; }
.join-form { box-shadow: 0 16px 34px rgba(30,44,43,.06); }
.join-form h3 { margin-bottom: 8px; font-size: 24px; }
.join-form .primary-link { width: 100%; }
.form-note { margin: 13px 0 0; color: var(--muted); font-size: 12px; text-align: center; }
label {
  display: grid;
  gap: 8px;
  margin: 19px 0;
  color: var(--body);
  font-size: 13px;
  font-weight: 700;
}
input, textarea, select {
  width: 100%;
  border: 1px solid #cccbc4;
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  padding: 13px 14px;
  outline: none;
}
select { appearance: auto; }
input:focus, textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(18,111,112,.09); }
textarea { min-height: 112px; resize: vertical; }
.muted { color: var(--muted); line-height: 1.7; }
.location-picker {
  display: grid;
  gap: 12px;
  margin: 19px 0;
}
.location-picker label { margin: 0; }
.japan-location {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.japan-location[hidden] { display: none; }

.library-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-bottom: 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.library-category {
  display: block;
  flex: 1 1 188px;
  min-width: 0;
  padding: 19px 18px 20px 0;
}
.library-category + .library-category { padding-left: 18px; border-left: 1px solid var(--line); }
.library-categories span {
  display: block;
  margin-bottom: 10px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}
.library-categories strong { display: block; margin-bottom: 7px; font-size: 16px; }
.library-category:hover strong { color: var(--accent); }
.library-categories p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}
.article-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr .8fr;
  gap: 14px;
}
.article-grid article {
  min-width: 0;
  padding: 21px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.article-grid article:first-child {
  grid-row: span 2;
  padding: 28px;
  background: var(--warm);
}
.article-grid small {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}
.article-grid h3 {
  margin: 20px 0 10px;
  font-size: 22px;
  line-height: 1.35;
}
.article-grid article:first-child h3 { margin-top: 34px; font-size: 31px; }
.article-grid p {
  margin-bottom: 12px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.78;
}
.article-grid a, .case-card a {
  display: inline-flex;
  margin-top: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}
.home-guide {
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(360px, .74fr);
  gap: 18px;
  align-items: stretch;
}
.home-guide-feature {
  display: grid;
  min-height: 520px;
  grid-template-rows: auto auto auto auto 1fr;
  padding: 18px 18px 26px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: transform .18s ease, border-color .18s ease;
}
.home-guide-feature:hover {
  transform: translateY(-2px);
  border-color: rgba(18,111,112,.32);
}
.home-guide-feature img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: calc(var(--radius) - 1px);
  margin-bottom: 24px;
}
.home-guide-feature span,
.home-guide-list small {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.home-guide-feature h3 {
  max-width: 620px;
  margin: 16px 0 12px;
  font-size: clamp(26px, 3.1vw, 38px);
  line-height: 1.35;
}
.home-guide-feature p {
  max-width: 620px;
  margin: 0;
  color: var(--body);
  font-size: 15px;
  line-height: 1.9;
}
.home-guide-feature strong {
  align-self: end;
  margin-top: 28px;
  color: var(--accent);
  font-size: 14px;
}
.home-guide-list {
  padding: 23px 24px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.home-guide-list > p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.home-guide-list ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
.home-guide-list li { border-top: 1px solid var(--line); }
.home-guide-list a {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 5px 12px;
  padding: 15px 0;
}
.home-guide-list span {
  grid-row: span 2;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}
.home-guide-list strong {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.55;
}
.home-guide-list a:hover strong { color: var(--accent); }

.community-first { padding-top: 8px; }
.connection-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.connection-grid li {
  min-width: 0;
  padding: 27px 27px 0 0;
}
.connection-grid li + li { padding-left: 27px; border-left: 1px solid var(--line); }
.connection-grid span {
  display: block;
  margin-bottom: 38px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.connection-grid strong {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-display);
  font-size: 23px;
}
.connection-grid p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.78; }

.exam-locked { display: flex; max-width: 560px; gap: 20px; align-items: center; justify-content: space-between; }
.exam-locked p { margin: 0; }
.exam-form { display: grid; gap: 14px; }
.exam-form fieldset { margin: 0; padding: 22px; }
.exam-form legend { padding: 0 0 10px; font-weight: 700; }
.exam-form label { display: flex; align-items: flex-start; gap: 10px; margin: 13px 0; font-size: 14px; }
.exam-form input[type="radio"] { width: auto; margin-top: 4px; }
.exam-banner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
  padding: 34px 36px;
  border: 1px solid rgba(18,111,112,.18);
  border-radius: var(--radius);
  background: var(--accent-soft);
}
.exam-banner h2 {
  margin: 8px 0 12px;
  font-size: clamp(31px, 3.4vw, 44px);
  line-height: 1.25;
}
.exam-banner p:not(.eyebrow) {
  max-width: 760px;
  margin: 0;
  color: var(--body);
  font-size: 15px;
  line-height: 1.85;
}
.exam-banner .primary-link { flex: none; background: var(--ink); }
.exam-landing {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, .72fr);
  gap: 54px;
  align-items: center;
  margin: 34px 0 70px;
}
.exam-landing-copy h1 {
  margin: 12px 0 18px;
  font-size: clamp(48px, 7vw, 88px);
  line-height: .98;
}
.exam-landing-copy > p:not(.eyebrow) {
  max-width: 680px;
  color: var(--body);
  font-size: 17px;
  line-height: 1.95;
}
.exam-landing-image {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.exam-landing-image img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.category-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
}
.category-map article {
  min-width: 0;
  padding: 22px 23px 20px 0;
}
.category-map article:nth-child(4n+2),
.category-map article:nth-child(4n+3),
.category-map article:nth-child(4n+4) { padding-left: 23px; border-left: 1px solid var(--line); }
.category-map small { color: var(--accent); font-family: var(--font-mono); font-size: 10px; font-weight: 700; }
.category-map strong { display: block; margin: 13px 0 9px; font-size: 20px; }
.category-map p { color: var(--muted); font-size: 13px; line-height: 1.7; }
.category-map ul {
  display: grid;
  gap: 7px;
  padding: 13px 0 0;
  margin: 17px 0 0;
  border-top: 1px solid var(--line);
  color: var(--body);
  font-size: 13px;
  list-style: none;
}
.category-map li::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: 2px;
}

.community-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.profile-row { display: flex; gap: 15px; align-items: center; margin-bottom: 22px; }
.avatar {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
}
.profile-row strong, .profile-row span { display: block; }
.profile-row strong { font-size: 26px; }
.profile-row span { color: var(--muted); }
.rank-title { position: relative; display: inline-flex !important; align-items: center; gap: 8px; }
.rank-info { display: inline-block; font-family: var(--font-body); font-size: 14px; }
.rank-info summary {
  display: inline-grid;
  place-items: center;
  width: 23px;
  height: 23px;
  border: 1px solid rgba(18,111,112,.25);
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  list-style: none;
}
.rank-info summary::-webkit-details-marker { display: none; }
.rank-info div {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  z-index: 25;
  width: min(82vw, 430px);
  padding: 17px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 18px 42px rgba(19,25,26,.1);
}
.rank-info b { display: block; font-size: 18px; }
.rank-info p { margin: 7px 0 0; color: var(--body); font-size: 13px; }
.rank-info ul { display: grid; gap: 8px; padding: 12px 0 0; margin: 12px 0 0; border-top: 1px solid var(--line); list-style: none; }
.rank-info li { color: var(--body); font-size: 13px; }
.rank-info li span { display: block; color: var(--muted); font-family: var(--font-mono); font-size: 10px; }
.rank-progress { margin: 4px 0 24px; }
.rank-progress div { height: 8px; overflow: hidden; border-radius: 99px; background: #eceae4; }
.rank-progress span { display: block; height: 100%; border-radius: inherit; background: var(--accent); }
.rank-progress p { margin: 8px 0 0; color: var(--muted); font-size: 12px; }
.certificate-row { padding: 15px 0; border-top: 1px solid var(--line); }
.certificate-row b, .certificate-row span { display: block; }
.certificate-row span { margin-top: 5px; color: var(--accent); font-family: var(--font-mono); font-size: 12px; }
.text-button { margin-top: 20px; padding: 0; border: 0; background: transparent; color: var(--muted); }
.invite-panel {
  margin-top: 16px;
  padding: 23px;
  border: 1px solid rgba(18,111,112,.18);
  border-radius: var(--radius);
  background: var(--accent-soft);
}
.invite-panel h3, .reward-policy h3 { margin-bottom: 9px; font-size: 23px; }
.invite-panel input { margin-top: 13px; font-family: var(--font-mono); color: var(--accent); }
.reward-policy, .rank-ladder, .management-roles {
  display: grid;
  gap: 0;
  overflow: hidden;
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.reward-policy { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.reward-policy h3, .management-roles h3 { grid-column: 1 / -1; margin: 0; padding: 18px; border-bottom: 1px solid var(--line); }
.reward-policy article { min-height: 135px; padding: 17px; }
.reward-policy article + article { border-left: 1px solid var(--line); }
.reward-policy strong, .reward-policy span, .reward-policy em { display: block; }
.reward-policy strong { font-size: 18px; }
.reward-policy span { margin-top: 9px; color: var(--accent); font-family: var(--font-mono); font-size: 13px; font-weight: 700; }
.reward-policy em { margin-top: 5px; color: var(--warn); font-size: 12px; font-style: normal; }
.reward-policy p { margin: 9px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.rank-ladder { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.rank-ladder article { min-height: 142px; padding: 16px; }
.rank-ladder article.current { background: var(--accent-soft); }
.rank-ladder article + article { border-left: 1px solid var(--line); }
.rank-ladder span, .rank-ladder em { display: block; font-family: var(--font-mono); font-size: 10px; font-style: normal; font-weight: 700; }
.rank-ladder span { color: var(--accent); }
.rank-ladder strong { display: block; margin: 11px 0 7px; font-size: 17px; }
.rank-ladder em { color: var(--warn); }
.rank-ladder p { margin: 10px 0 0; color: var(--muted); font-size: 12px; line-height: 1.55; }
.management-roles { grid-template-columns: repeat(4, minmax(0, 1fr)); border-color: rgba(148,101,22,.18); }
.management-roles article { padding: 18px; }
.management-roles article + article { border-left: 1px solid rgba(148,101,22,.18); }
.management-roles strong { display: block; color: var(--warn); font-size: 19px; }
.management-roles p { margin: 9px 0 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.case-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.case-status {
  display: inline-flex;
  min-height: 27px;
  align-items: center;
  padding: 0 10px;
  border-radius: 99px;
  background: var(--warm);
  color: var(--warn);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}
.case-card h3 { margin: 15px 0 9px; font-size: 23px; }
.case-card p { margin-bottom: 10px; color: var(--body); font-size: 14px; line-height: 1.82; }
.site-footer {
  padding: 27px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.reading-main {
  width: min(calc(100% - 48px), var(--content));
  margin: 0 auto;
  padding: 40px 0 92px;
}
.reading-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 62px;
  padding-bottom: 25px;
  border-bottom: 1px solid var(--line);
}
.reading-nav a {
  min-height: 39px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: 99px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}
.reading-nav a:hover { border-color: var(--line); color: var(--ink); }
.reading-nav a.selected { border-color: rgba(18,111,112,.2); background: var(--accent-soft); color: var(--accent); }
.reading-intro {
  display: grid;
  grid-template-columns: minmax(460px, 1fr) 400px;
  gap: 70px;
  align-items: end;
  margin-bottom: 46px;
}
.reading-intro h1 {
  margin: 12px 0 0;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(44px, 4.5vw, 61px);
  line-height: 1.13;
}
.reading-intro > p {
  margin: 0 0 8px;
  color: var(--body);
  font-size: 16px;
  line-height: 2;
}
.evidence-key,
.evidence-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.evidence-key { margin-bottom: 72px; }
.evidence-key div,
.evidence-panel div { min-height: 105px; padding: 19px 21px; border-top: 3px solid transparent; }
.evidence-key div + div,
.evidence-panel div + div { border-left: 1px solid var(--line); }
.evidence-key strong,
.evidence-panel strong { display: block; margin-bottom: 9px; font-size: 14px; }
.evidence-key p,
.evidence-panel p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.evidence-key .fact,
.evidence-panel .fact { border-top-color: var(--accent); }
.evidence-key .fact strong,
.evidence-panel .fact strong { color: var(--accent); }
.evidence-key .open,
.evidence-panel .open { border-top-color: var(--warn); }
.evidence-key .open strong,
.evidence-panel .open strong { color: var(--warn); }
.evidence-key .imagination,
.evidence-panel .imagination { border-top-color: #99a3a2; }
.columns-title { margin-bottom: 31px; }
.columns-title h2 {
  max-width: 680px;
  margin: 11px 0 0;
  font-family: var(--font-display);
  font-size: 37px;
  line-height: 1.3;
}
.column-index {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.column-index article {
  display: flex;
  min-height: 289px;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.column-index article:first-child {
  grid-column: span 2;
  background: var(--warm);
}
.column-meta {
  display: flex;
  justify-content: space-between;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.column-meta time { color: var(--muted); }
.column-index h3 {
  margin: 32px 0 13px;
  font-size: 24px;
  line-height: 1.5;
}
.column-index article:first-child h3 {
  max-width: 570px;
  font-size: 32px;
  line-height: 1.4;
}
.column-index h3 a:hover { color: var(--accent); }
.column-index p {
  margin: 0 0 23px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.85;
}
.read-more {
  margin-top: auto;
  color: var(--accent);
  font-size: 14px;
  font-weight: 700;
}
.read-more::after { content: "  ->"; font-family: var(--font-mono); }
.column-hero {
  max-width: 880px;
  margin: 8px auto 50px;
}
.column-hero h1 {
  margin: 18px 0 20px;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(42px, 4.7vw, 62px);
  line-height: 1.2;
}
.column-deck {
  max-width: 710px;
  margin: 0 0 31px;
  color: var(--body);
  font-size: 18px;
  line-height: 1.95;
}
.column-byline {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}
.evidence-panel {
  max-width: 1100px;
  margin: 0 auto 62px;
}
.column-layout {
  display: grid;
  grid-template-columns: minmax(0, 702px) 285px;
  gap: 78px;
  max-width: 1100px;
  margin: 0 auto 86px;
}
.column-body section + section { margin-top: 55px; }
.column-body h2 {
  margin: 0 0 20px;
  color: var(--ink);
  font-size: 29px;
  line-height: 1.45;
}
.column-body p {
  margin: 0 0 22px;
  color: var(--body);
  font-size: 17px;
  line-height: 2.13;
}
.source-sidebar {
  position: sticky;
  top: 102px;
  align-self: start;
  padding-top: 22px;
  border-top: 2px solid var(--ink);
}
.source-sidebar h2 { margin: 10px 0 19px; font-size: 22px; }
.source-sidebar ul { margin: 0 0 24px; padding: 0; list-style: none; }
.source-sidebar li { padding: 13px 0; border-top: 1px solid var(--line); }
.source-sidebar a {
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
}
.source-sidebar > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}
.related-columns {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.related-columns h2 { margin: 10px 0 0; font-size: 27px; }
.related-links { display: grid; gap: 12px; width: min(480px, 100%); }
.related-links a {
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  color: var(--body);
  font-weight: 700;
}
.related-links a:hover { color: var(--accent); }

/* UFO guide: simple entry points for first-time Japanese readers. */
.breadcrumb {
  display: flex;
  gap: 11px;
  align-items: center;
  margin-bottom: 32px;
  color: var(--muted);
  font-size: 13px;
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb strong { color: var(--body); font-weight: 500; }
.guide-intro {
  display: grid;
  grid-template-columns: minmax(430px, 1fr) minmax(380px, .86fr);
  gap: 54px;
  align-items: center;
  margin-bottom: 60px;
}
.guide-label,
.article-label {
  display: inline-flex;
  min-height: 29px;
  align-items: center;
  margin: 0 0 16px;
  padding: 0 12px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}
.guide-copy h1 {
  margin: 0 0 18px;
  color: var(--ink);
  font-size: clamp(44px, 5vw, 64px);
  line-height: 1.18;
}
.guide-copy > p:not(.guide-label) {
  max-width: 540px;
  margin: 0 0 30px;
  color: var(--body);
  font-size: 17px;
  line-height: 2;
}
.guide-image {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.guide-image img {
  display: block;
  width: 100%;
  height: 259px;
  object-fit: cover;
}
.guide-image p {
  margin: 0;
  padding: 19px 22px 21px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.65;
}
.guide-image strong {
  display: block;
  margin-bottom: 5px;
  color: var(--accent);
  font-size: 13px;
}
.topic-section {
  margin-bottom: 64px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.topic-section h2 {
  margin: 0 0 21px;
  font-size: 25px;
}
.topic-menu {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.topic-menu a {
  min-height: 100px;
  padding: 17px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color .18s ease, background-color .18s ease;
}
.topic-menu a:hover,
.topic-menu a.selected {
  border-color: rgba(18,111,112,.35);
  background: var(--accent-soft);
}
.topic-menu strong {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
  font-size: 16px;
}
.topic-menu span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}
.columns-title {
  display: flex;
  gap: 28px;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 27px;
}
.columns-title h2 {
  margin: 0;
  font-family: inherit;
  font-size: 30px;
}
.columns-title p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}
.column-index {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.column-index article,
.column-index article:first-child {
  grid-column: auto;
  min-height: 240px;
  padding: 24px 25px;
  background: var(--panel);
}
.column-index article:first-child { border-top: 3px solid var(--accent); }
.column-index h3,
.column-index article:first-child h3 {
  margin: 20px 0 11px;
  font-size: 23px;
  line-height: 1.55;
}
.read-more::after { content: "  >"; }
.column-page {
  max-width: 1120px;
  margin: 0 auto;
}
.column-hero {
  max-width: 780px;
  margin: 26px 0 42px;
}
.column-hero h1 {
  margin: 0 0 19px;
  font-size: clamp(37px, 4.2vw, 53px);
  line-height: 1.3;
}
.column-deck {
  margin-bottom: 23px;
  font-size: 17px;
  line-height: 1.9;
}
.column-byline {
  flex-wrap: wrap;
  gap: 8px 20px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
}
.article-points {
  max-width: 780px;
  margin-bottom: 54px;
  padding: 26px 28px 20px;
  border-radius: var(--radius);
  background: #f2f6f4;
}
.article-points h2 {
  margin: 0 0 18px;
  font-size: 22px;
}
.article-points .point {
  display: grid;
  grid-template-columns: 172px 1fr;
  gap: 19px;
  padding: 15px 0;
  border-top: 1px solid rgba(18,111,112,.13);
}
.article-points strong { font-size: 14px; }
.article-points p {
  margin: 0;
  color: var(--body);
  font-size: 14px;
  line-height: 1.75;
}
.article-points .fact strong { color: var(--accent); }
.article-points .open strong { color: var(--warn); }
.article-points .imagination strong { color: var(--muted); }
.column-layout {
  grid-template-columns: minmax(0, 720px) 275px;
  gap: 62px;
  align-items: start;
  margin: 0 0 76px;
}
.column-main { min-width: 0; }
.column-body section + section { margin-top: 46px; }
.column-body h2 { margin-bottom: 17px; font-size: 27px; }
.column-body p { font-size: 16px; line-height: 2.05; }
.source-sidebar {
  top: 86px;
  max-height: calc(100dvh - 106px);
  overflow: auto;
  scrollbar-gutter: stable;
  padding-top: 0;
  border-top: 0;
}
.column-visual {
  max-width: 780px;
  margin: -10px 0 34px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.column-visual img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.article-list {
  margin: 0 0 22px;
  padding-left: 1.3em;
  color: var(--body);
  font-size: 16px;
  line-height: 2.05;
}
.article-list li + li { margin-top: 8px; }
.article-table-wrap {
  margin: 10px 0 28px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.article-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
}
.article-table th,
.article-table td {
  padding: 14px 15px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
  line-height: 1.7;
}
.article-table tr:last-child td { border-bottom: 0; }
.article-table th {
  color: var(--accent);
  background: var(--accent-soft);
}
.article-code {
  margin: 10px 0 28px;
  overflow-x: auto;
  padding: 18px;
  border-radius: var(--radius);
  background: #111719;
  color: #f6f6f2;
  font-size: 13px;
  line-height: 1.7;
}
.column-list-nav {
  margin-bottom: 34px;
  padding: 18px 0 4px;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.column-list-nav h2 {
  margin: 0 0 14px;
  font-size: 18px;
}
.column-list-nav ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
.column-list-nav li { border-top: 1px solid var(--line); }
.column-list-nav a {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 10px 11px;
  padding: 13px 0;
  color: var(--body);
}
.column-list-nav span {
  grid-row: span 2;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.column-list-nav strong {
  font-size: 13px;
  line-height: 1.55;
}
.column-list-nav small {
  color: var(--muted);
  font-size: 11px;
}
.column-list-nav a:hover strong { color: var(--accent); }
.column-list-nav .current a {
  margin: 0 -10px;
  padding-right: 10px;
  padding-left: 10px;
  border-radius: var(--radius);
  background: var(--accent-soft);
}
.column-list-nav .current span,
.column-list-nav .current strong { color: var(--accent); }
.article-toc {
  margin-bottom: 38px;
  padding: 20px;
  border-radius: var(--radius);
  background: var(--warm);
}
.article-toc h2 {
  margin: 0 0 12px;
  font-size: 18px;
}
.article-toc a {
  display: block;
  padding: 10px 0;
  border-top: 1px solid rgba(22,26,27,.1);
  color: var(--body);
  font-size: 13px;
  line-height: 1.6;
}
.source-sidebar > h2 {
  padding-top: 18px;
  border-top: 2px solid var(--ink);
  font-size: 19px;
}
.related-columns { margin: 0; }
.guide-head {
  max-width: 780px;
  margin: 22px 0 55px;
}
.guide-head h1 {
  margin: 0 0 17px;
  color: var(--ink);
  font-size: clamp(41px, 4.2vw, 55px);
  line-height: 1.2;
}
.guide-lead {
  max-width: 660px;
  margin: 0;
  color: var(--body);
  font-size: 16px;
  line-height: 1.95;
}
.starter-course {
  display: grid;
  grid-template-columns: 254px minmax(0, 1fr);
  gap: 38px;
  margin-bottom: 61px;
  padding: 33px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.starter-heading p {
  margin: 0 0 11px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}
.starter-heading h2 {
  margin: 0 0 13px;
  font-size: 29px;
}
.starter-heading span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}
.starter-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 10px;
}
.starter-grid a {
  display: flex;
  min-height: 134px;
  flex-direction: column;
  justify-content: center;
  padding: 21px 23px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color .18s ease, transform .18s ease;
}
.starter-grid a:first-child {
  grid-row: span 2;
  border-color: rgba(18,111,112,.26);
  background: var(--accent-soft);
}
.starter-grid a:hover { border-color: rgba(18,111,112,.45); transform: translateY(-1px); }
.starter-grid small {
  margin-bottom: 13px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.starter-grid strong {
  margin-bottom: 9px;
  font-size: 19px;
  line-height: 1.55;
}
.starter-grid a:first-child strong { font-size: 24px; }
.starter-grid span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}
.filter-section { scroll-margin-top: 94px; }
.filter-heading {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: baseline;
  margin-bottom: 23px;
}
.filter-heading h2 { margin: 0; font-size: 29px; }
.filter-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 37px;
}
.filter-chips a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: var(--panel);
  color: var(--body);
  font-size: 14px;
  font-weight: 700;
  transition: border-color .18s ease, background-color .18s ease, transform .18s ease;
}
.filter-chips a:hover { border-color: rgba(18,111,112,.36); }
.filter-chips a:active { transform: translateY(1px); }
.filter-chips a.selected {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}
.filter-result {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) auto;
  gap: 22px;
  align-items: baseline;
  padding: 0 0 17px;
  border-bottom: 2px solid var(--ink);
}
.filter-result h3 { margin: 0; font-size: 22px; }
.filter-result p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.filter-result strong {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 13px;
}
.guide-article-list article {
  display: grid;
  grid-template-columns: 144px minmax(225px, .84fr) minmax(285px, 1fr) 112px;
  gap: 26px;
  align-items: center;
  padding: 25px 0;
  border-bottom: 1px solid var(--line);
}
.guide-article-list .column-meta {
  display: grid;
  justify-content: start;
  gap: 8px;
}
.guide-article-list h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.55;
}
.guide-article-list h3 a:hover { color: var(--accent); }
.guide-article-list p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.72;
}
.guide-card-foot {
  display: grid;
  justify-items: end;
  gap: 13px;
}
.guide-card-foot small {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.guide-card-foot .read-more { margin: 0; }
.reading-progress {
  max-width: 780px;
  margin: 14px 0 34px;
}
.reading-progress p {
  display: flex;
  justify-content: space-between;
  margin: 0 0 11px;
  color: var(--muted);
  font-size: 13px;
}
.reading-progress strong {
  color: var(--accent);
  font-family: var(--font-mono);
}
.reading-progress div {
  height: 3px;
  overflow: hidden;
  background: var(--line);
}
.reading-progress span {
  display: block;
  height: 100%;
  background: var(--accent);
}
.next-reading {
  position: relative;
  display: flex;
  max-width: 780px;
  gap: 28px;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 40px;
  padding: 30px 31px 58px;
  border: 1px solid rgba(18,111,112,.18);
  border-radius: var(--radius);
  background: var(--accent-soft);
}
.next-reading p {
  margin: 0 0 9px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.next-reading h2 { margin: 0 0 9px; font-size: 24px; line-height: 1.45; }
.next-reading span {
  display: block;
  max-width: 470px;
  color: var(--body);
  font-size: 13px;
  line-height: 1.72;
}
.next-reading .primary-link { flex: none; }
.back-to-list {
  position: absolute;
  bottom: 19px;
  left: 31px;
  color: var(--body);
  font-size: 13px;
  font-weight: 700;
}
.back-to-list:hover { color: var(--accent); }

@media (max-width: 1000px) {
  .site-header { padding: 0 20px; grid-template-columns: auto 1fr auto; gap: 16px; }
  .nav-links { gap: 16px; }
  .section-heading, .join-section, .community-layout { grid-template-columns: 1fr; gap: 26px; }
  .article-grid { grid-template-columns: 1fr 1fr; }
  .article-grid article:first-child { grid-column: 1 / -1; grid-row: auto; }
  .home-guide { grid-template-columns: 1fr; }
  .home-guide-feature { min-height: 0; }
  .exam-banner,
  .exam-landing { grid-template-columns: 1fr; }
  .exam-banner .primary-link { width: fit-content; }
  .connection-grid, .category-map { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .connection-grid li:nth-child(3), .connection-grid li:nth-child(4) { margin-top: 26px; padding-top: 26px; border-top: 1px solid var(--line); }
  .category-map article:nth-child(odd) { border-left: 0; padding-left: 0; }
  .category-map article:nth-child(even) { padding-left: 23px; border-left: 1px solid var(--line); }
  .reward-policy, .rank-ladder, .management-roles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .reading-intro { grid-template-columns: 1fr; gap: 22px; }
  .guide-intro { grid-template-columns: 1fr; gap: 31px; }
  .guide-image { max-width: 600px; }
  .topic-menu { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .starter-course { grid-template-columns: 1fr; gap: 22px; }
  .starter-heading span { display: block; max-width: 560px; }
  .guide-article-list article { grid-template-columns: 130px 1fr 112px; gap: 22px; }
  .guide-article-list article > p { grid-column: 2 / 3; }
  .columns-title { display: block; }
  .columns-title p { margin-top: 10px; }
  .column-index { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .column-layout { grid-template-columns: 1fr; gap: 50px; }
  .source-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
  }
}
@media (max-width: 720px) {
  .site-header {
    height: 68px;
    grid-template-columns: 1fr auto;
    padding: 0 14px;
  }
  .brand { width: 124px; }
  .brand img { width: 116px; }
  .home-page .site-header { height: 76px; }
  .home-page .site-header.is-scrolled { height: 68px; }
  .home-page .brand { width: 148px; }
  .home-page .brand img { width: 140px; }
  .home-page .site-header.is-scrolled .brand { width: 124px; }
  .home-page .site-header.is-scrolled .brand img { width: 116px; }
  .nav-links { display: none; }
  .join-button { min-height: 40px; padding: 0 14px; font-size: 14px; }
  .hero-section {
    min-height: 550px;
    background-position: 67% center;
    background-image:
      linear-gradient(90deg, rgba(12,18,20,.91) 0%, rgba(12,18,20,.69) 66%, rgba(12,18,20,.36) 100%),
      url("/assets/media/citizen-observation-hero.webp");
  }
  .hero-inner, .notice, .section-shell, .trust-strip, .site-footer {
    width: min(calc(100% - 28px), var(--content));
  }
  .hero-inner { align-items: flex-end; padding: 54px 0 35px; }
  h1 { margin-bottom: 17px; font-size: 37px; line-height: 1.18; }
  .hero-lead { font-size: 14px; line-height: 1.82; }
  .hero-actions { margin-top: 25px; gap: 9px; }
  .hero-actions .primary-link, .hero-actions .secondary-link { min-height: 44px; padding: 0 15px; font-size: 14px; }
  .trust-strip { grid-template-columns: 1fr; margin-top: 24px; margin-bottom: 49px; }
  .trust-strip div { padding: 18px 0; }
  .trust-strip div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .section-shell { margin-bottom: 58px; }
  .section-heading { grid-template-columns: 1fr; gap: 17px; margin-bottom: 23px; }
  .section-heading h2, .join-copy h2 { font-size: 31px; }
  .join-section {
    margin-bottom: 55px;
    padding: 36px 14px;
  }
  .release-list { display: grid; }
  .library-categories { display: block; }
  .library-category { padding: 16px 0; }
  .library-category + .library-category { padding-left: 0; border-top: 1px solid var(--line); border-left: 0; }
  .article-grid, .connection-grid, .category-map, .case-list, .reward-policy, .rank-ladder, .management-roles {
    grid-template-columns: 1fr;
  }
  .home-guide { gap: 12px; }
  .home-guide-feature { padding: 14px 14px 21px; }
  .home-guide-feature img { margin-bottom: 20px; }
  .home-guide-feature h3 { font-size: 25px; }
  .home-guide-list { padding: 18px 18px 10px; }
  .home-guide-list a { grid-template-columns: 30px 1fr; padding: 13px 0; }
  .japan-location { grid-template-columns: 1fr; }
  .exam-banner { padding: 25px 18px; }
  .exam-banner .primary-link { width: 100%; }
  .exam-landing { gap: 26px; margin: 18px 0 48px; }
  .exam-landing-copy h1 { font-size: 47px; }
  .exam-landing-copy > p:not(.eyebrow) { font-size: 15px; line-height: 1.85; }
  .article-grid article:first-child { padding: 22px; }
  .article-grid article:first-child h3 { margin-top: 20px; font-size: 25px; }
  .connection-grid li, .connection-grid li + li {
    margin-top: 0;
    padding: 22px 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }
  .connection-grid span { margin-bottom: 17px; }
  .category-map article,
  .category-map article:nth-child(even),
  .category-map article:nth-child(odd) {
    padding: 18px 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }
  .exam-locked { display: grid; gap: 15px; }
  .rank-ladder article + article,
  .reward-policy article + article,
  .management-roles article + article { border-top: 1px solid var(--line); border-left: 0; }
  .reading-main { width: calc(100% - 28px); padding: 22px 0 62px; }
  .breadcrumb { margin-bottom: 22px; }
  .guide-head { margin: 6px 0 39px; }
  .guide-head h1 { font-size: 34px; line-height: 1.3; }
  .guide-lead { font-size: 14px; line-height: 1.85; }
  .starter-course { margin-bottom: 42px; padding: 25px 0; }
  .starter-heading h2 { font-size: 25px; }
  .starter-grid { display: block; }
  .starter-grid a,
  .starter-grid a:first-child { min-height: 0; padding: 16px; }
  .starter-grid a + a { margin-top: 8px; }
  .starter-grid a:first-child strong { font-size: 20px; }
  .filter-heading { display: block; margin-bottom: 18px; }
  .filter-heading h2 { margin-bottom: 8px; font-size: 24px; }
  .filter-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin: 0 -14px 26px;
    padding: 0 14px;
    scrollbar-width: none;
  }
  .filter-chips::-webkit-scrollbar { display: none; }
  .filter-chips a { flex: none; min-height: 44px; }
  .filter-result { display: block; padding-bottom: 13px; }
  .filter-result h3 { margin-bottom: 5px; font-size: 20px; }
  .filter-result strong { display: block; margin-top: 10px; }
  .guide-article-list article { display: block; padding: 20px 0; }
  .guide-article-list .column-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 13px;
  }
  .guide-article-list h3 { margin-bottom: 9px; font-size: 20px; }
  .guide-article-list p { margin-bottom: 16px; }
  .guide-card-foot { display: flex; align-items: center; justify-content: space-between; }
  .guide-intro { margin-bottom: 38px; }
  .guide-copy h1 { margin-bottom: 13px; font-size: 40px; }
  .guide-copy > p:not(.guide-label) { margin-bottom: 25px; font-size: 15px; line-height: 1.9; }
  .guide-image img { height: 187px; }
  .guide-image p { padding: 15px 16px 17px; }
  .topic-section { margin-bottom: 43px; padding: 25px 0; }
  .topic-section h2 { margin-bottom: 16px; font-size: 22px; }
  .topic-menu { grid-template-columns: 1fr; gap: 8px; }
  .topic-menu a { min-height: 0; padding: 14px 15px; }
  .reading-nav {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin-bottom: 39px;
    padding-bottom: 17px;
    scrollbar-width: none;
  }
  .reading-nav::-webkit-scrollbar { display: none; }
  .reading-nav a { flex: none; }
  .reading-intro { margin-bottom: 30px; }
  .reading-intro h1 { font-size: 37px; }
  .reading-intro > p { font-size: 14px; line-height: 1.9; }
  .evidence-key,
  .evidence-panel { grid-template-columns: 1fr; }
  .evidence-key { margin-bottom: 49px; }
  .evidence-key div,
  .evidence-panel div { min-height: 0; padding: 16px; }
  .evidence-key div + div,
  .evidence-panel div + div { border-left: 0; }
  .columns-title h2 { font-size: 28px; }
  .column-index { grid-template-columns: 1fr; }
  .column-index article,
  .column-index article:first-child { grid-column: auto; min-height: 0; padding: 20px; }
  .column-index h3,
  .column-index article:first-child h3 { margin: 22px 0 10px; font-size: 23px; }
  .column-hero { margin-bottom: 34px; }
  .article-label { margin-bottom: 13px; }
  .reading-progress { margin: 5px 0 25px; }
  .column-hero h1 { margin: 0 0 17px; font-size: 32px; }
  .column-deck { margin-bottom: 24px; font-size: 15px; line-height: 1.9; }
  .article-points { margin-bottom: 36px; padding: 20px 16px 14px; }
  .article-points h2 { font-size: 20px; }
  .article-points .point { display: block; padding: 13px 0; }
  .article-points strong { display: block; margin-bottom: 7px; }
  .evidence-panel { margin-bottom: 39px; }
  .column-layout { gap: 37px; margin-bottom: 51px; }
  .column-list-nav { margin-bottom: 28px; }
  .column-list-nav a { grid-template-columns: 26px 1fr; }
  .column-body section + section { margin-top: 39px; }
  .column-body h2 { margin-bottom: 15px; font-size: 24px; }
  .column-body p { margin-bottom: 17px; font-size: 15px; line-height: 2; }
  .related-columns { display: block; padding-top: 29px; }
  .related-links { margin-top: 23px; }
  .next-reading {
    display: block;
    padding: 22px 17px 54px;
  }
  .next-reading h2 { font-size: 21px; }
  .next-reading .primary-link { width: 100%; margin-top: 21px; }
  .back-to-list { bottom: 18px; left: 17px; }
}