@charset "UTF-8";

:root {
  color-scheme: light;
  --pkplus-ink: #172431;
  --pkplus-deep: #101923;
  --pkplus-red: #b12033;
  --pkplus-paper: #eef0ee;
  --pkplus-sheet: #fbfcfa;
  --pkplus-line: #bac2c5;
  --pkplus-muted: #53616a;
  --pkplus-serif: "Noto Serif CJK SC", "Songti SC", "SimSun", serif;
  --pkplus-sans: "Microsoft YaHei", "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--pkplus-paper);
  color: var(--pkplus-ink);
  font-family: var(--pkplus-sans);
  line-height: 1.8;
}

.b35-brand {
  min-height: 70px;
  display: flex;
  align-items: center;
  padding: 10px clamp(18px, 5vw, 72px);
  background: var(--pkplus-deep);
}

.b35-brand a {
  color: #f7f8f6;
  font-family: var(--pkplus-serif);
  font-size: 25px;
  letter-spacing: 0.16em;
  text-decoration: none;
}

.b35-navigation {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  gap: 2px;
  overflow-x: auto;
  padding: 0 clamp(10px, 4vw, 58px);
  background: #f8f9f7;
  border-bottom: 2px solid var(--pkplus-red);
  scrollbar-width: thin;
}

.b35-navigation a {
  flex: 0 0 auto;
  padding: 13px 12px 11px;
  color: var(--pkplus-ink);
  font-size: 13px;
  text-decoration: none;
  border-bottom: 3px solid transparent;
}

.b35-navigation a:hover,
.b35-navigation a:focus-visible {
  border-bottom-color: var(--pkplus-red);
  outline: 0;
}

main {
  width: min(1510px, 100%);
  margin: 0 auto;
  padding: 32px clamp(16px, 4vw, 60px) 100px;
}

.pkplus-cover {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 6vw, 82px) clamp(22px, 7vw, 100px) 46px;
  background:
    linear-gradient(112deg, rgba(177, 32, 51, 0.2), transparent 42%),
    var(--pkplus-deep);
  color: #f6f7f4;
}

.pkplus-cover::after {
  position: absolute;
  top: 0;
  right: 6%;
  width: 1px;
  height: 100%;
  background: rgba(255, 255, 255, 0.17);
  content: "";
}

.pkplus-cover h1 {
  max-width: 980px;
  margin: 0 0 24px;
  font-family: var(--pkplus-serif);
  font-size: clamp(31px, 4.6vw, 56px);
  font-weight: 500;
  line-height: 1.3;
}

.pkplus-cover-copy {
  max-width: 890px;
  margin: 0;
  color: #e0e5e3;
  font-family: var(--pkplus-serif);
  font-size: clamp(16px, 1.3vw, 19px);
  line-height: 2.05;
}

.pkplus-cover h2 {
  display: inline-block;
  margin: 38px 0 0;
  padding-top: 10px;
  border-top: 2px solid var(--pkplus-red);
  color: #f7f8f6;
  font-family: var(--pkplus-serif);
  font-size: 16px;
  font-weight: 500;
}

.pkplus-home-index {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
  padding-top: 20px;
}

.pkplus-section {
  min-width: 0;
  scroll-margin-top: 78px;
  padding: clamp(20px, 2.6vw, 34px);
  background: var(--pkplus-sheet);
  border-top: 3px solid var(--pkplus-ink);
}

.pkplus-section-title {
  display: flex;
  align-items: center;
  margin-bottom: 22px;
}

.pkplus-section-title::before {
  width: 10px;
  height: 10px;
  margin-right: 12px;
  background: var(--pkplus-red);
  content: "";
}

.pkplus-section-title h2 {
  margin: 0;
  font-family: var(--pkplus-serif);
  font-size: clamp(21px, 2vw, 28px);
  font-weight: 500;
  line-height: 1.35;
}

.pkplus-insights {
  grid-column: span 7;
}

.pkplus-service {
  grid-column: span 5;
  border-top-color: var(--pkplus-red);
}

.pkplus-data-range {
  grid-column: span 5;
  background: #e3e8e7;
}

.pkplus-vision {
  grid-column: span 7;
  border-top-color: #71838b;
}

.pkplus-news,
.pkplus-faq,
.pkplus-community {
  grid-column: 1 / -1;
}

.pkplus-insight-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18px;
  gap: 20px;
  align-items: stretch;
}

.pkplus-insight-margin {
  background: linear-gradient(var(--pkplus-red), var(--pkplus-red)) center / 2px 100% no-repeat;
}

.pkplus-copy-block {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.pkplus-art {
  width: 48px;
  height: 48px;
  margin: 3px 0 0;
}

.pkplus-art img {
  display: block;
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.pkplus-copy h3,
.site-viewpoint h3 {
  margin: 0 0 12px;
  font-family: var(--pkplus-serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
}

.pkplus-copy p,
.site-viewpoint > p:last-child {
  margin: 0;
  color: #46535b;
  font-size: 14px;
  line-height: 1.95;
}

.pkplus-service-strip {
  padding: 22px 18px;
  background: #f0f2f0;
  border-left: 4px solid var(--pkplus-red);
}

.pkplus-service-copy {
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
}

.pkplus-range-board {
  position: relative;
  padding: 26px 0 6px;
}

.pkplus-range-copy {
  position: relative;
  z-index: 1;
  padding: 22px;
  background: rgba(251, 252, 250, 0.9);
}

.pkplus-range-rule {
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 78%;
  border-top: 1px solid var(--pkplus-red);
  border-right: 1px solid var(--pkplus-red);
}

.pkplus-vision-band {
  padding: 24px;
  background: var(--pkplus-deep);
  color: #f5f7f4;
}

.pkplus-vision-copy p {
  color: #dbe0de;
}

.pkplus-news {
  background: var(--pkplus-ink);
  color: #f6f8f5;
  border-top-color: var(--pkplus-red);
}

.pkplus-news .pkplus-section-title {
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding-bottom: 14px;
}

.pkplus-news-index {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.pkplus-news-note {
  min-width: 0;
  padding: 18px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.pkplus-news-note:nth-child(3n + 1) {
  grid-column: span 2;
  background: rgba(255, 255, 255, 0.095);
}

.pkplus-news-note time,
.pkplus-long-read time {
  display: block;
  margin-bottom: 9px;
  color: #e0a6aa;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.pkplus-news-link {
  color: inherit;
  text-decoration-color: rgba(255, 255, 255, 0.36);
  text-underline-offset: 4px;
}

.pkplus-news-link h3 {
  margin: 0 0 12px;
  font-family: var(--pkplus-serif);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
}

.pkplus-news-note .news-body {
  margin: 0;
  color: #d4dcda;
  font-size: 13px;
  line-height: 1.9;
}

.pkplus-question-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
}

.pkplus-question {
  padding: 17px 4px;
  border-bottom: 1px solid var(--pkplus-line);
}

.pkplus-question summary {
  cursor: pointer;
  font-family: var(--pkplus-serif);
  font-size: 15px;
  font-weight: 600;
}

.pkplus-answer {
  padding-top: 12px;
  color: var(--pkplus-muted);
  font-size: 13px;
}

.pkplus-answer p {
  margin: 0;
}

.pkplus-dialogue-field {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.pkplus-community .site-viewpoint {
  padding: 22px;
  background: #e8eceb;
  border-left: 3px solid var(--pkplus-red);
}

.pkplus-community .site-viewpoint:last-child {
  grid-column: span 2;
  background: #f0ece8;
}

.pkplus-topic {
  margin: 0 0 14px;
  color: var(--pkplus-red);
  font-size: 12px;
  letter-spacing: 0.05em;
}

.pkplus-page-heading {
  margin: 18px 0 30px;
  padding: clamp(26px, 5vw, 58px);
  background: var(--pkplus-deep);
  color: #f7f8f6;
  border-left: 8px solid var(--pkplus-red);
}

.pkplus-page-heading h1 {
  margin: 0 0 10px;
  font-family: var(--pkplus-serif);
  font-size: clamp(29px, 4vw, 46px);
  font-weight: 500;
}

.pkplus-page-heading p {
  max-width: 690px;
  margin: 0;
  color: #d5ddda;
  font-size: 14px;
}

.pkplus-inner-field {
  position: relative;
  padding: 8px clamp(0px, 4vw, 54px) 24px;
}

.pkplus-history-rail {
  display: grid;
  grid-template-columns: 22px minmax(0, 1.2fr) minmax(230px, 0.8fr);
  gap: 22px;
}

.pkplus-history-rail::before {
  grid-row: 1 / span 2;
  background: linear-gradient(var(--pkplus-red), var(--pkplus-red)) center / 2px 100% no-repeat;
  content: "";
}

.pkplus-history-sheet {
  min-height: 270px;
  padding: 28px;
  background: var(--pkplus-sheet);
  border-bottom: 1px solid var(--pkplus-line);
}

.pkplus-history-sheet:nth-child(2) {
  margin-top: 76px;
  background: #e4e8e6;
}

.pkplus-metric-glossary {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(250px, 0.65fr);
  gap: 18px;
}

.pkplus-metric-sheet {
  padding: 30px;
  background: var(--pkplus-sheet);
  border-top: 2px solid var(--pkplus-ink);
}

.pkplus-metric-sheet:first-child {
  grid-row: span 2;
  padding-top: 54px;
}

.pkplus-translation-leaves {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 26px;
  align-items: center;
}

.pkplus-language-sheet {
  padding: 28px;
  background: var(--pkplus-sheet);
  border-top: 3px solid var(--pkplus-red);
}

.pkplus-language-sheet:nth-child(2) {
  margin-top: 62px;
  border-top-color: #71838b;
}

.pkplus-mobile-reading {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(250px, 0.85fr);
  gap: 18px;
  align-items: center;
}

.pkplus-mobile-sheet {
  padding: 28px;
  background: var(--pkplus-sheet);
  border: 1px solid var(--pkplus-line);
}

.pkplus-mobile-sheet:first-child {
  min-height: 330px;
  padding-top: 48px;
  background: #e2e7e6;
}

.pkplus-reading-room {
  padding: 4px clamp(0px, 5vw, 72px);
}

.pkplus-reading-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.pkplus-long-read {
  padding: 28px clamp(22px, 5vw, 70px);
  background: var(--pkplus-sheet);
  border-top: 2px solid var(--pkplus-line);
}

.pkplus-long-read:nth-child(4n + 1) {
  border-top-color: var(--pkplus-red);
}

.pkplus-long-read h2 {
  margin: 0 0 15px;
  font-family: var(--pkplus-serif);
  font-size: 21px;
  font-weight: 500;
  line-height: 1.5;
}

.pkplus-long-read .news-body {
  max-width: 900px;
  margin: 0;
  color: #46535b;
  font-size: 15px;
  line-height: 2;
}

.pkplus-home-return {
  display: inline-block;
  margin-top: 26px;
  color: var(--pkplus-red);
  text-underline-offset: 4px;
}

.b35-footer {
  padding: 32px clamp(20px, 5vw, 72px);
  background: var(--pkplus-deep);
  color: #f4f6f4;
  font-size: 13px;
}

.b35-footer p {
  margin: 4px 0;
}

.b35-footer div {
  display: flex;
  flex-wrap: wrap;
  gap: 17px;
  margin-top: 16px;
}

.b35-footer a {
  color: #f0b5b8;
  text-underline-offset: 3px;
}

@media (max-width: 960px) {
  .pkplus-home-index {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .pkplus-insights,
  .pkplus-service,
  .pkplus-data-range,
  .pkplus-vision {
    grid-column: span 3;
  }

  .pkplus-news-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pkplus-history-rail,
  .pkplus-metric-glossary,
  .pkplus-translation-leaves,
  .pkplus-mobile-reading {
    grid-template-columns: minmax(0, 1fr);
  }

  .pkplus-history-rail::before {
    display: none;
  }

  .pkplus-history-sheet:nth-child(2),
  .pkplus-language-sheet:nth-child(2) {
    margin-top: 0;
  }

  .pkplus-metric-sheet:first-child {
    grid-row: auto;
    padding-top: 30px;
  }
}

@media (max-width: 640px) {
  main {
    padding: 16px 12px 56px;
  }

  .b35-navigation a {
    padding: 11px 9px;
    font-size: 12px;
  }

  .pkplus-cover {
    padding: 30px 22px;
  }

  .pkplus-cover::after {
    right: 16px;
  }

  .pkplus-home-index {
    grid-template-columns: minmax(0, 1fr);
  }

  .pkplus-insights,
  .pkplus-service,
  .pkplus-data-range,
  .pkplus-vision,
  .pkplus-news,
  .pkplus-faq,
  .pkplus-community {
    grid-column: auto;
  }

  .pkplus-section {
    padding: 20px 16px;
  }

  .pkplus-news-index,
  .pkplus-question-list,
  .pkplus-dialogue-field {
    grid-template-columns: minmax(0, 1fr);
  }

  .pkplus-news-note:nth-child(3n + 1),
  .pkplus-community .site-viewpoint:last-child {
    grid-column: auto;
  }

  .pkplus-copy-block {
    grid-template-columns: minmax(0, 1fr);
  }

  .pkplus-art {
    margin-bottom: 4px;
  }

  .pkplus-history-sheet,
  .pkplus-history-sheet:nth-child(2),
  .pkplus-metric-sheet,
  .pkplus-language-sheet,
  .pkplus-language-sheet:nth-child(2),
  .pkplus-mobile-sheet,
  .pkplus-mobile-sheet:first-child {
    min-height: 0;
    margin-top: 0;
    padding: 22px;
  }

  .pkplus-reading-room {
    padding: 0;
  }
}