@charset "UTF-8";
:root {
  --nlt-paper: #f4f1e8;
  --nlt-ink: #27322f;
  --nlt-pine: #174f43;
  --nlt-berry: #c4126a;
  --nlt-brass: #c8a959;
  --nlt-line: rgba(39, 50, 47, 0.22);
  --nlt-soft: #e4e9df;
  --nlt-serif: "Noto Serif CJK SC", "Songti SC", serif;
  --nlt-sans: "Microsoft YaHei", "PingFang SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--nlt-paper);
  color: var(--nlt-ink);
  font-family: var(--nlt-sans);
  line-height: 1.78;
}
a { color: var(--nlt-pine); text-underline-offset: 0.24em; }
a:hover { color: var(--nlt-berry); }

.b35-brand,
.b35-navigation,
.b35-footer {
  width: min(1280px, calc(100% - 44px));
  margin: 0 auto;
}
.b35-brand { padding: 20px 0 8px; font-size: 1.05rem; font-weight: 800; }
.b35-brand a { color: var(--nlt-pine); text-decoration: none; }
.b35-navigation {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
  padding: 9px 0 17px;
  border-bottom: 1px solid var(--nlt-line);
  font-size: 0.83rem;
}
.b35-navigation a { color: var(--nlt-ink); text-decoration: none; }
.b35-footer {
  margin-top: 72px;
  padding: 25px 0 36px;
  border-top: 2px solid var(--nlt-pine);
  color: #59625e;
  font-size: 0.83rem;
}
.b35-footer div { display: flex; flex-wrap: wrap; gap: 17px; }

.nlt-home-page,
.nlt-interior {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
}
.nlt-front-page { padding: clamp(38px, 7vw, 86px) 0 20px; }
.nlt-front-page h1,
.nlt-page-header h1 {
  max-width: 1040px;
  margin: 0 0 25px;
  font-family: var(--nlt-serif);
  font-size: clamp(2rem, 5.5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.2;
}
.nlt-subject-ledger {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 128px;
  gap: 24px 58px;
  align-items: center;
  padding: clamp(24px, 4vw, 48px) 0 25px;
  border-top: 5px solid var(--nlt-pine);
  border-bottom: 1px solid var(--nlt-line);
  scroll-margin-top: 22px;
}
.nlt-subject-copy { max-width: 900px; }
.nlt-subject-copy h2 { margin: 0 0 12px; color: var(--nlt-berry); font-size: 1rem; letter-spacing: 0.09em; }
.nlt-subject-copy p { margin: 0; font-size: clamp(1rem, 1.5vw, 1.12rem); }
.nlt-subject-mark { display: block; width: 128px; height: 128px; object-fit: contain; }
.nlt-sequence-rule {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--nlt-pine);
  font-size: 0.82rem;
}
.nlt-sequence-rule i { flex: 1; height: 1px; background: var(--nlt-brass); }

.nlt-block { margin: clamp(52px, 8vw, 96px) 0; scroll-margin-top: 22px; }
.nlt-block-heading {
  display: flex;
  align-items: center;
  gap: 17px;
  margin-bottom: 21px;
}
.nlt-block-heading h2 {
  margin: 0;
  font-family: var(--nlt-serif);
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.35;
}
.nlt-rule-seal { width: 34px; height: 12px; border-top: 3px solid var(--nlt-berry); border-bottom: 1px solid var(--nlt-brass); }
.nlt-explainer {
  display: grid;
  grid-template-columns: minmax(190px, 0.36fr) minmax(0, 1fr);
  gap: clamp(18px, 5vw, 72px);
  padding: clamp(20px, 3.5vw, 38px);
  border-top: 1px solid var(--nlt-line);
  border-bottom: 1px solid var(--nlt-line);
  background: rgba(255, 255, 255, 0.48);
}
.nlt-explainer h3 { margin: 0; color: var(--nlt-pine); font-size: 1.12rem; }
.nlt-explainer p { margin: 0; }
.nlt-features .nlt-explainer { border-left: 7px solid var(--nlt-pine); }
.nlt-insight .nlt-explainer { grid-template-columns: minmax(0, 1fr); max-width: 920px; margin-left: auto; background: transparent; }
.nlt-deep-read .nlt-explainer { border-top: 4px double var(--nlt-brass); background: var(--nlt-soft); }

.nlt-data-sheet {
  display: grid;
  grid-template-columns: minmax(180px, 0.72fr) minmax(0, 1.28fr);
  min-height: 200px;
  border: 1px solid var(--nlt-line);
  background: #fff;
}
.nlt-data-fields { display: flex; flex-direction: column; justify-content: center; gap: 8px; padding: 26px; background: var(--nlt-pine); color: white; }
.nlt-data-fields span { padding: 5px 10px; border-bottom: 1px solid rgba(255,255,255,0.28); }
.nlt-data-explainer { padding: clamp(22px, 4vw, 42px); }
.nlt-data-explainer h3 { margin: 0 0 12px; color: var(--nlt-pine); font-size: 1.15rem; }
.nlt-data-explainer p { margin: 0; }

.nlt-question-register { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.nlt-question { align-self: start; border-top: 2px solid var(--nlt-berry); padding: 17px 19px; background: #fff; }
.nlt-question summary { cursor: pointer; color: var(--nlt-pine); font-weight: 700; }
.nlt-question p { margin: 14px 0 0; }
.nlt-discussion-ledger { display: grid; grid-template-columns: 1.12fr 0.92fr 1fr; gap: 15px; align-items: start; }
.nlt-discussion-note { padding: 22px; border: 1px solid var(--nlt-line); background: var(--nlt-soft); }
.nlt-discussion-note:nth-child(2) { margin-top: 33px; border-top: 5px solid var(--nlt-brass); background: #fff; }
.nlt-discussion-note:nth-child(3) { margin-top: 13px; border-left: 5px solid var(--nlt-pine); }
.nlt-discussion-note h3 { margin: 0 0 10px; font-family: var(--nlt-serif); font-size: 1.08rem; }
.nlt-discussion-note p { margin: 0; }

.nlt-news-heading { justify-content: space-between; }
.nlt-record-ledger { border-top: 3px solid var(--nlt-pine); }
.nlt-record-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 18px;
  padding: 23px 15px;
  border-bottom: 1px solid var(--nlt-line);
}
.nlt-record-row:nth-child(odd) { background: rgba(255,255,255,0.45); }
.nlt-record-thumb { width: 76px; height: 76px; object-fit: contain; }
.nlt-record-main time,
.nlt-archive-entry time { color: #68716d; font-size: 0.82rem; }
.nlt-record-main h3 { margin: 4px 0 8px; font-size: 1.08rem; line-height: 1.5; }
.nlt-news-copy { margin: 0; }
.nlt-record-main a { display: inline-block; margin-top: 9px; font-size: 0.86rem; }

.nlt-interior { padding-top: clamp(34px, 6vw, 68px); }
.nlt-page-header { max-width: 920px; margin-bottom: 36px; padding-bottom: 20px; border-bottom: 4px solid var(--nlt-pine); }
.nlt-page-return { margin: 0 0 12px; font-size: 0.84rem; }
.nlt-page-header h1 { margin-bottom: 10px; font-size: clamp(1.9rem, 4vw, 3.3rem); }
.nlt-page-kicker { margin: 0; color: #68716d; }
.nlt-history-rail { display: grid; grid-template-columns: 1fr 1.12fr; gap: 18px; align-items: start; }
.nlt-history-entry,
.nlt-stat-entry,
.nlt-language-entry,
.nlt-display-entry {
  display: grid;
  grid-template-columns: 98px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: clamp(20px, 3vw, 33px);
  border-left: 1px solid var(--nlt-line);
  background: rgba(255,255,255,0.58);
}
.nlt-history-entry:first-child { margin-top: 37px; grid-template-columns: 128px minmax(0, 1fr); background: var(--nlt-soft); }
.nlt-panel-mark { display: block; width: 98px; height: 98px; object-fit: contain; }
.nlt-history-entry:first-child .nlt-panel-mark { width: 128px; height: 128px; }
.nlt-panel-copy h2 { margin: 0 0 12px; color: var(--nlt-pine); font-family: var(--nlt-serif); font-size: 1.2rem; line-height: 1.45; }
.nlt-panel-copy p { margin: 0; }
.nlt-stat-archive { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 17px; }
.nlt-stat-entry:first-child { border-top: 5px solid var(--nlt-berry); }
.nlt-stat-entry:nth-child(2) { margin-top: 42px; background: var(--nlt-soft); }
.nlt-language-spread { display: grid; grid-template-columns: 0.86fr 1.14fr; gap: 19px; }
.nlt-language-entry:first-child { display: block; border-top: 5px solid var(--nlt-brass); }
.nlt-language-entry:first-child .nlt-panel-mark { margin-bottom: 16px; }
.nlt-language-entry:nth-child(2) { grid-template-columns: minmax(0, 1fr) 98px; }
.nlt-language-entry:nth-child(2) .nlt-panel-mark { grid-column: 2; grid-row: 1; }
.nlt-language-entry:nth-child(2) .nlt-panel-copy { grid-column: 1; grid-row: 1; }
.nlt-display-panels { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 17px; }
.nlt-display-entry:first-child { border-radius: 32px 0 0; }
.nlt-display-entry:nth-child(2) { margin-top: 34px; border-top: 5px solid var(--nlt-pine); }
.nlt-return-home { margin-top: 34px; }

.nlt-archive-register { border-top: 3px solid var(--nlt-pine); }
.nlt-archive-entry {
  display: grid;
  grid-template-columns: 96px 92px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 23px 12px;
  border-bottom: 1px solid var(--nlt-line);
  scroll-margin-top: 22px;
}
.nlt-archive-entry:nth-child(even) { padding-left: 5%; background: rgba(255,255,255,0.42); }
.nlt-archive-mark { width: 88px; height: 88px; object-fit: contain; }
.nlt-archive-copy h2 { margin: 0 0 9px; font-family: var(--nlt-serif); font-size: 1.22rem; line-height: 1.45; }
.nlt-archive-copy p { margin: 0; }

@media (max-width: 780px) {
  .nlt-home-page,
  .nlt-interior { width: min(100% - 32px, 700px); }
  .nlt-subject-ledger { grid-template-columns: minmax(0, 1fr) 92px; gap: 20px; }
  .nlt-subject-mark { width: 92px; height: 92px; }
  .nlt-discussion-ledger,
  .nlt-question-register,
  .nlt-history-rail,
  .nlt-stat-archive,
  .nlt-language-spread,
  .nlt-display-panels { grid-template-columns: 1fr; }
  .nlt-discussion-note:nth-child(2),
  .nlt-discussion-note:nth-child(3),
  .nlt-stat-entry:nth-child(2),
  .nlt-display-entry:nth-child(2),
  .nlt-history-entry:first-child { margin-top: 0; }
  .nlt-archive-entry { grid-template-columns: 78px minmax(0, 1fr); }
  .nlt-archive-entry time { grid-column: 1 / -1; }
  .nlt-archive-mark { width: 76px; height: 76px; }
}

@media (max-width: 520px) {
  .nlt-subject-ledger { grid-template-columns: 1fr; }
  .nlt-subject-mark { width: 76px; height: 76px; }
  .nlt-sequence-rule { gap: 6px; font-size: 0.73rem; }
  .nlt-explainer,
  .nlt-data-sheet,
  .nlt-history-entry,
  .nlt-history-entry:first-child,
  .nlt-stat-entry,
  .nlt-language-entry,
  .nlt-language-entry:nth-child(2),
  .nlt-display-entry { grid-template-columns: 1fr; }
  .nlt-record-row { grid-template-columns: 1fr; }
  .nlt-record-thumb { width: 68px; height: 68px; }
  .nlt-data-fields { flex-direction: row; flex-wrap: wrap; }
  .nlt-archive-entry { grid-template-columns: 1fr; }
  .nlt-archive-entry time { grid-column: auto; }
  .nlt-archive-mark { width: 68px; height: 68px; }
  .nlt-language-entry:nth-child(2) .nlt-panel-mark,
  .nlt-language-entry:nth-child(2) .nlt-panel-copy { grid-column: auto; grid-row: auto; }
}