:root {
  --ivory: #fff7ee;
  --paper: #fffdf9;
  --ink: #29403d;
  --muted: #667672;
  --teal: #087c9b;
  --teal-deep: #0b5e6d;
  --rust: #a87560;
  --gold: #b49253;
  --line: #e8d8c8;
  --shell: min(1180px, calc(100% - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--ivory);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--teal);
}

img {
  display: block;
  max-width: 100%;
}

.page-shell {
  width: var(--shell);
  margin: 0 auto;
}

.article-hero {
  padding: 18px 0 76px;
  background:
    linear-gradient(135deg, rgba(255, 247, 238, 0.97), rgba(250, 239, 226, 0.83)),
    radial-gradient(circle at 90% 15%, rgba(180, 146, 83, 0.16), transparent 33%);
  border-bottom: 1px solid var(--line);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  margin: 0 0 37px;
  color: var(--muted);
  font-size: 13px;
}

.breadcrumbs a:hover {
  color: var(--teal);
}

.breadcrumbs-separator {
  color: var(--gold);
}

.article-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  align-items: center;
  gap: clamp(34px, 6vw, 84px);
}

.article-eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 14px;
  letter-spacing: 0.16em;
}

.article-title {
  max-width: 620px;
  margin: 0;
  color: var(--teal);
  font-family: "STSong", "Songti SC", SimSun, serif;
  font-size: clamp(38px, 5vw, 66px);
  font-weight: 500;
  letter-spacing: 0.04em;
  line-height: 1.2;
}

.article-summary {
  max-width: 590px;
  margin: 23px 0 0;
  color: #455b57;
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.95;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin-top: 28px;
  color: var(--muted);
  font-size: 13px;
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.article-meta span::before {
  width: 6px;
  height: 6px;
  content: "";
  background: var(--gold);
  border-radius: 50%;
}

.article-hero-media {
  margin: 0;
}

.article-hero-media img {
  width: 100%;
  aspect-ratio: 1.58 / 1;
  object-fit: cover;
  box-shadow: 22px 22px 0 rgba(180, 146, 83, 0.18);
}

.article-hero-media figcaption {
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.article-layout {
  display: grid;
  grid-template-columns: 238px minmax(0, 1fr);
  align-items: start;
  gap: clamp(30px, 6vw, 84px);
  padding-top: 72px;
  padding-bottom: 82px;
}

.article-aside {
  position: sticky;
  top: 24px;
}

.toc-card {
  padding: 24px 22px 20px;
  background: rgba(255, 253, 249, 0.86);
  border-top: 3px solid var(--teal);
  box-shadow: 0 12px 30px rgba(80, 74, 61, 0.07);
}

.toc-title {
  margin: 0 0 13px;
  color: var(--teal-deep);
  font-size: 15px;
  font-weight: 700;
}

.toc-card a {
  display: block;
  padding: 8px 0;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.5;
}

.toc-card a:last-child {
  border-bottom: 0;
}

.toc-card a:hover {
  color: var(--teal);
  padding-left: 4px;
}

.aside-contact {
  display: block;
  margin-top: 18px;
  padding: 19px 22px;
  color: #fff;
  background: var(--rust);
  font-size: 14px;
  line-height: 1.7;
}

.aside-contact strong {
  display: block;
  margin-bottom: 5px;
  font-size: 17px;
  font-weight: 600;
}

.aside-contact:hover {
  color: #fff;
  background: #916150;
}

.article-content {
  min-width: 0;
  padding: 0 clamp(22px, 4vw, 60px) 0 0;
}

.article-section {
  scroll-margin-top: 28px;
}

.article-section + .article-section {
  margin-top: 58px;
  padding-top: 49px;
  border-top: 1px solid var(--line);
}

.article-section h2 {
  display: flex;
  align-items: baseline;
  gap: 15px;
  margin: 0 0 21px;
  color: var(--teal-deep);
  font-family: "STSong", "Songti SC", SimSun, serif;
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 500;
  line-height: 1.35;
}

.section-index {
  color: var(--gold);
  font-family: Arial, sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.article-content p {
  margin: 0;
  color: #455854;
  font-size: 16px;
  line-height: 2;
}

.article-content p + p {
  margin-top: 17px;
}

.lead-copy {
  max-width: 780px;
  color: var(--ink) !important;
  font-size: 19px !important;
  line-height: 2 !important;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.info-card {
  min-height: 180px;
  padding: 23px 24px 22px;
  background: var(--paper);
  border: 1px solid rgba(180, 146, 83, 0.22);
  border-top: 3px solid rgba(8, 124, 155, 0.65);
}

.info-card h3 {
  margin: 11px 0 9px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
}

.info-card p {
  font-size: 14px;
  line-height: 1.85;
}

.info-index {
  color: var(--gold);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.question-list {
  display: grid;
  gap: 0;
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.question-item {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 16px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.question-label {
  color: var(--teal);
  font-family: Arial, sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.question-item p {
  font-size: 15px;
  line-height: 1.85;
}

.notice {
  margin-top: 28px;
  padding: 22px 25px;
  background: #f3e6dc;
  border-left: 4px solid var(--rust);
}

.notice-title {
  margin: 0 0 6px !important;
  color: var(--rust) !important;
  font-size: 17px !important;
  font-weight: 700;
  line-height: 1.5 !important;
}

.notice p {
  font-size: 14px !important;
  line-height: 1.9 !important;
}

.source-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.source-list li {
  position: relative;
  padding-left: 19px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.source-list li::before {
  position: absolute;
  top: 0.75em;
  left: 0;
  width: 6px;
  height: 6px;
  content: "";
  background: var(--gold);
  border-radius: 50%;
}

.source-list a {
  color: var(--teal);
  text-decoration: underline;
  text-decoration-color: rgba(8, 124, 155, 0.35);
  text-underline-offset: 3px;
}

.article-cta {
  padding: 50px 0 55px;
  color: #fff;
  background: var(--teal-deep);
}

.article-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.article-cta h2 {
  margin: 0 0 6px;
  color: #fff;
  font-family: "STSong", "Songti SC", SimSun, serif;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 500;
  line-height: 1.4;
}

.article-cta p {
  margin: 0;
  color: rgba(255, 255, 255, 0.83);
  font-size: 14px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 130px;
  padding: 11px 19px;
  color: var(--teal-deep);
  background: var(--ivory);
  border: 1px solid var(--ivory);
  font-size: 14px;
  font-weight: 700;
  transition: background-color 180ms ease, color 180ms ease;
}

.cta-button:hover {
  color: #fff;
  background: var(--rust);
  border-color: var(--rust);
}

.cta-button.is-outline {
  color: #fff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.58);
}

.cta-button.is-outline:hover {
  color: var(--teal-deep);
  background: var(--ivory);
  border-color: var(--ivory);
}

#side-widget {
  position: fixed;
  top: 50%;
  right: 0;
  z-index: 1000;
  transform: translateY(-50%);
}

#side-widget ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.back-top {
  position: fixed;
  right: 18px;
  bottom: 20px;
  z-index: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  color: #fff;
  background: var(--rust);
  border: 0;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  cursor: pointer;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.back-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--teal);
}

@media (max-width: 960px) {
  :root {
    --shell: min(100% - 36px, 760px);
  }

  .article-hero-grid {
    gap: 36px;
  }

  .article-layout {
    grid-template-columns: 195px minmax(0, 1fr);
    gap: 28px;
  }

  .article-content {
    padding-right: 0;
  }
}

@media (max-width: 700px) {
  :root {
    --shell: calc(100% - 32px);
  }

  .article-hero {
    padding-bottom: 48px;
  }

  .breadcrumbs {
    margin-bottom: 24px;
    font-size: 12px;
  }

  .article-hero-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .article-title {
    font-size: clamp(34px, 11vw, 52px);
  }

  .article-summary {
    margin-top: 17px;
    font-size: 16px;
    line-height: 1.85;
  }

  .article-meta {
    margin-top: 19px;
  }

  .article-hero-media img {
    aspect-ratio: 1.48 / 1;
    box-shadow: 12px 12px 0 rgba(180, 146, 83, 0.18);
  }

  .article-layout {
    display: block;
    padding-top: 43px;
    padding-bottom: 54px;
  }

  .article-aside {
    position: static;
    margin-bottom: 37px;
  }

  .toc-card {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 18px;
    padding: 19px 18px 12px;
  }

  .toc-title {
    grid-column: 1 / -1;
    margin-bottom: 6px;
  }

  .toc-card a {
    padding: 7px 0;
  }

  .aside-contact {
    margin-top: 13px;
    padding: 15px 18px;
  }

  .article-section + .article-section {
    margin-top: 43px;
    padding-top: 38px;
  }

  .article-section h2 {
    gap: 10px;
    font-size: 27px;
  }

  .article-content p {
    font-size: 15px;
    line-height: 1.95;
  }

  .lead-copy {
    font-size: 17px !important;
  }

  .info-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 20px;
  }

  .info-card {
    min-height: 0;
    padding: 18px 18px 17px;
  }

  .question-item {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 10px;
  }

  .notice {
    padding: 18px 18px;
  }

  .article-cta {
    padding: 37px 0 40px;
  }

  .article-cta-inner {
    display: block;
  }

  .cta-actions {
    margin-top: 22px;
  }

  .back-top {
    right: 14px;
    bottom: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}



main { padding-top: 162px; font-family: "Microsoft YaHei", "PingFang SC", sans-serif; font-size: 16px; line-height: 1.8; }
@media (max-width: 767px) { main { padding-top: 150px; } }