:root {
  --rockbrain-green: #176247;
  --rockbrain-green-dark: #0f4935;
  --rockbrain-green-soft: #eaf3ef;
  --rockbrain-ink: #18201d;
  --rockbrain-muted: #5d6863;
  --rockbrain-line: #dfe5e2;
  --rockbrain-surface: #f5f7f6;
  --rockbrain-font-sans: Inter, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans CJK SC", "Source Han Sans SC", Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body,
button,
input,
select,
textarea {
  color: var(--rockbrain-ink);
  font-family: var(--rockbrain-font-sans);
}

h1,
h2,
h3,
h4,
h5,
h6,
.wp-block-site-title {
  font-family: var(--rockbrain-font-sans);
  letter-spacing: -0.02em;
}

.wp-site-blocks h1,
.wp-site-blocks h2,
.wp-site-blocks h3,
.wp-site-blocks h4,
.wp-site-blocks h5,
.wp-site-blocks h6 {
  font-family: var(--rockbrain-font-sans);
}

a {
  text-underline-offset: 0.18em;
}

/* 不支持 :where() 的旧版内核（Chrome 88 以下，如 360 安全浏览器 13）会丢弃主题的链接与按钮样式，
   这里只为这些浏览器补上主要部分，新版浏览器不会应用。 */
@supports not selector(:where(a)) {
  a {
    color: var(--wp--preset--color--contrast);
  }

  a:hover {
    text-decoration: none;
  }

  .wp-block-site-title a {
    color: inherit;
    text-decoration: none;
  }

  .wp-block-navigation a,
  .wp-block-post-title a,
  .wp-block-post-terms a,
  .wp-block-post-date a,
  .wp-block-post-author-name a {
    text-decoration: none;
  }

  .wp-block-post-date a {
    color: var(--wp--preset--color--contrast-2);
  }

  .wp-block-button__link {
    display: inline-block;
    padding: 0.6rem 1rem;
    border-radius: 0.33rem;
    color: var(--wp--preset--color--base);
    font-size: var(--wp--preset--font-size--small);
    font-weight: 500;
    text-decoration: none;
  }
}

body > .wp-site-blocks > header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}

body > .wp-site-blocks > header,
body > .wp-site-blocks > main,
body > .wp-site-blocks > footer {
  margin-top: 0;
}

body > .wp-site-blocks > header .wp-block-navigation-item__content {
  position: relative;
  transition: color 160ms ease;
}

body > .wp-site-blocks > header .wp-block-navigation-item__content:hover,
body > .wp-site-blocks > header .wp-block-navigation-item__content:focus-visible {
  color: var(--rockbrain-green);
}

body > .wp-site-blocks > header .wp-block-navigation-item__content::after {
  position: absolute;
  right: 0;
  bottom: -0.35rem;
  left: 0;
  height: 2px;
  background: var(--rockbrain-green);
  content: "";
  opacity: 0;
  transform: scaleX(0.5);
  transition: opacity 160ms ease, transform 160ms ease;
}

body > .wp-site-blocks > header .wp-block-navigation-item__content:hover::after,
body > .wp-site-blocks > header .wp-block-navigation-item__content:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

#business,
#about,
#news,
#contact {
  scroll-margin-top: 100px;
}

.wp-block-button__link {
  border: 1px solid var(--rockbrain-green);
  background: var(--rockbrain-green);
  transition: background-color 160ms ease, border-color 160ms ease,
    transform 160ms ease;
}

.wp-block-button__link:hover,
.wp-block-button__link:focus-visible {
  border-color: var(--rockbrain-green-dark);
  background: var(--rockbrain-green-dark);
  transform: translateY(-1px);
}

.rockbrain-business-cards {
  align-items: stretch;
}

.rockbrain-business-cards > .wp-block-column {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 2.4vw, 2rem);
  border: 1px solid var(--rockbrain-line);
  border-radius: 16px;
  background: #fff;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.rockbrain-business-cards > .wp-block-column::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: var(--rockbrain-green);
  content: "";
}

.rockbrain-business-cards > .wp-block-column:hover {
  border-color: rgba(23, 98, 71, 0.35);
  box-shadow: 0 14px 34px rgba(15, 73, 53, 0.1);
  transform: translateY(-2px);
}

.rockbrain-business-cards h3 {
  margin-top: 0;
}

.rockbrain-business-cards h3 a,
.rockbrain-business-cards p a {
  color: var(--rockbrain-green-dark);
}

.rockbrain-secondary-business {
  max-width: 960px;
}

.rockbrain-about-section {
  margin: 0;
  padding: clamp(4rem, 8vw, 7.5rem) clamp(1.25rem, 5vw, 4rem);
  background: linear-gradient(135deg, #f4f7f5 0%, #eaf2ee 100%);
}

.rockbrain-about-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(3rem, 7vw, 7rem);
  width: min(1180px, 100%);
  margin: 0 auto;
}

.rockbrain-about-intro {
  align-self: start;
  max-width: 36rem;
}

.rockbrain-eyebrow {
  margin: 0 0 0.75rem;
  color: var(--rockbrain-green);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.rockbrain-about-intro h2 {
  margin: 0 0 1.5rem;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.12;
}

.rockbrain-about-intro p:not(.rockbrain-eyebrow) {
  color: var(--rockbrain-muted);
  line-height: 1.85;
}

.rockbrain-timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rockbrain-timeline::before {
  position: absolute;
  top: 1.2rem;
  bottom: 1.2rem;
  left: 3.2rem;
  width: 1px;
  background: rgba(23, 98, 71, 0.25);
  content: "";
}

.rockbrain-timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr);
  gap: 1.5rem;
  padding: 0 0 2.2rem;
}

.rockbrain-timeline li:last-child {
  padding-bottom: 0;
}

.rockbrain-timeline-year {
  position: relative;
  z-index: 1;
  align-self: start;
  width: max-content;
  padding: 0.32rem 0.72rem;
  border: 1px solid rgba(23, 98, 71, 0.24);
  border-radius: 999px;
  color: var(--rockbrain-green-dark);
  background: #fff;
  font-size: 0.84rem;
  font-weight: 700;
}

.rockbrain-timeline h3 {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
}

.rockbrain-timeline p {
  margin: 0;
  color: var(--rockbrain-muted);
  line-height: 1.75;
}

.rockbrain-news-grid {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  gap: clamp(1rem, 2.4vw, 1.75rem) !important;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rockbrain-news-card {
  min-width: 0;
  margin: 0 !important;
  padding: 0;
  border: 1px solid var(--rockbrain-line);
  border-radius: 14px;
  background: #fff;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.rockbrain-news-card:hover {
  border-color: rgba(23, 98, 71, 0.35);
  box-shadow: 0 16px 38px rgba(15, 73, 53, 0.09);
  transform: translateY(-2px);
}

.rockbrain-news-card article {
  display: flex;
  min-height: 100%;
  box-sizing: border-box;
  flex-direction: column;
  align-items: flex-start;
  padding: clamp(1.25rem, 2.8vw, 2rem);
}

.rockbrain-news-date {
  margin-bottom: 0.8rem;
  color: var(--rockbrain-green);
  font-size: 0.82rem;
  font-weight: 650;
}

.rockbrain-news-card.sticky .rockbrain-news-date::after {
  margin-left: 0.55rem;
  padding: 0.16rem 0.45rem;
  border-radius: 999px;
  color: #fff;
  background: var(--rockbrain-green);
  content: "置顶";
  font-size: 0.72rem;
}

.rockbrain-news-title {
  margin: 0 0 0.85rem;
  font-size: clamp(1.12rem, 2.1vw, 1.45rem);
  line-height: 1.42;
}

.rockbrain-news-title a {
  color: var(--rockbrain-ink);
  text-decoration: none;
}

.rockbrain-news-title a:hover,
.rockbrain-news-title a:focus-visible {
  color: var(--rockbrain-green);
}

.rockbrain-news-summary {
  display: -webkit-box;
  overflow: hidden;
  margin: 0 0 1.2rem;
  color: var(--rockbrain-muted);
  line-height: 1.75;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.rockbrain-news-more {
  margin-top: auto;
  color: var(--rockbrain-green-dark);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.rockbrain-news-more:hover,
.rockbrain-news-more:focus-visible {
  text-decoration: underline;
}

.wp-block-query-pagination {
  margin-top: 2.5rem;
}

.wp-block-query-pagination a,
.wp-block-query-pagination .page-numbers {
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  text-decoration: none;
}

.wp-block-query-pagination a:hover,
.wp-block-query-pagination a:focus-visible,
.wp-block-query-pagination .current {
  color: #fff;
  background: var(--rockbrain-green);
}

.rockbrain-breadcrumb {
  display: flex;
  gap: 0.65rem;
  align-items: center;
  width: min(1280px, calc(100% - 2.5rem));
  margin: clamp(2rem, 5vw, 4rem) auto 0;
  color: var(--rockbrain-muted);
  font-size: 0.9rem;
}

.rockbrain-breadcrumb a {
  color: var(--rockbrain-green-dark);
}

.rockbrain-page-number {
  display: inline-block;
  margin-left: 0.65rem;
  color: var(--rockbrain-muted);
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: 0;
  vertical-align: middle;
}

.entry-content.wp-block-post-content {
  max-width: 46rem;
  margin-right: auto;
  margin-left: auto;
}

.entry-content.wp-block-post-content p,
.entry-content.wp-block-post-content li {
  line-height: 1.85;
}

.page-template-default main {
  padding-bottom: clamp(3.5rem, 7vw, 6rem);
}

.single-post main > .wp-block-group:last-child {
  margin-top: clamp(2.5rem, 5vw, 4rem) !important;
  padding-bottom: clamp(2.5rem, 5vw, 4rem) !important;
}

.single-post main > .wp-block-group:last-child .wp-block-spacer {
  display: none;
}

.single-post main > .wp-block-group:last-child .wp-block-separator {
  margin: 0 0 1.5rem !important;
}

.single-post nav[aria-label="文章"] {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
}

.single-post .wp-block-post-navigation-link {
  min-width: 0;
}

.single-post .wp-block-post-navigation-link__arrow-previous,
.single-post .wp-block-post-navigation-link__arrow-next {
  display: none;
}

.single-post .wp-block-post-navigation-link a {
  display: block;
  min-height: 100%;
  box-sizing: border-box;
  padding: 1rem 1.15rem;
  border: 1px solid var(--rockbrain-line);
  border-radius: 12px;
  color: var(--rockbrain-ink);
  background: #fff;
  line-height: 1.55;
  text-decoration: none;
}

.single-post .wp-block-post-navigation-link a:hover,
.single-post .wp-block-post-navigation-link a:focus-visible {
  border-color: rgba(23, 98, 71, 0.38);
  color: var(--rockbrain-green-dark);
  background: var(--rockbrain-green-soft);
}

.single-post .post-navigation-link-next {
  text-align: right;
}

.single-post .post-navigation-link__label {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--rockbrain-muted);
  font-size: 0.78rem;
}

.rockbrain-footer {
  width: 100%;
  margin-top: 0 !important;
  color: rgba(255, 255, 255, 0.76);
  background: #101915;
}

.rockbrain-footer-inner {
  width: min(1180px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.rockbrain-contact-band {
  color: #fff;
  background: var(--rockbrain-green);
}

.rockbrain-contact-band-inner {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: space-between;
  padding-top: clamp(1.5rem, 3.5vw, 2.3rem);
  padding-bottom: clamp(1.5rem, 3.5vw, 2.3rem);
}

.rockbrain-contact-label {
  display: block;
  margin-bottom: 0.22rem;
  font-size: 0.78rem;
  letter-spacing: 0.13em;
  opacity: 0.8;
}

.rockbrain-contact-band strong {
  font-size: clamp(1.2rem, 2.4vw, 1.65rem);
}

.rockbrain-contact-actions {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  flex-wrap: wrap;
}

.rockbrain-contact-actions a {
  color: #fff;
  font-weight: 700;
  text-decoration: none;
}

.rockbrain-contact-actions a:hover,
.rockbrain-contact-actions a:focus-visible {
  text-decoration: underline;
}

.rockbrain-footer-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr 0.75fr;
  gap: clamp(2rem, 6vw, 5.5rem);
  padding-top: clamp(3rem, 6vw, 5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.rockbrain-footer h2 {
  margin: 0 0 1rem;
  color: #fff;
  font-size: 1rem;
  line-height: 1.4;
}

.rockbrain-footer h2 a {
  color: inherit;
  text-decoration: none;
}

.rockbrain-footer p {
  max-width: 38rem;
  margin: 0;
  line-height: 1.8;
}

.rockbrain-footer ul {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rockbrain-footer li,
.rockbrain-footer a {
  overflow-wrap: anywhere;
}

.rockbrain-footer li a {
  color: rgba(255, 255, 255, 0.76);
  text-decoration: none;
}

.rockbrain-footer li a:hover,
.rockbrain-footer li a:focus-visible {
  color: #fff;
  text-decoration: underline;
}

.rockbrain-wechat {
  display: grid;
  gap: 0.55rem;
  justify-items: start;
  margin: 1.4rem 0 0;
}

.rockbrain-wechat img {
  display: block;
  box-sizing: border-box;
  width: 7.5rem;
  height: 7.5rem;
  padding: 0.3rem;
  border-radius: 6px;
  background: #fff;
}

.rockbrain-wechat figcaption {
  font-size: 0.78rem;
  line-height: 1.5;
}

.rockbrain-footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 1.15rem;
  padding-bottom: 1.4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.78rem;
}

@media (max-width: 782px) {
  body > .wp-site-blocks > header .wp-block-site-title {
    max-width: 13em;
    font-size: 0.95rem;
    line-height: 1.35;
  }

  .rockbrain-about-inner,
  .rockbrain-footer-grid {
    grid-template-columns: 1fr;
  }

  .rockbrain-about-inner {
    gap: 2.5rem;
  }

  .rockbrain-news-grid {
    grid-template-columns: 1fr !important;
  }

  .rockbrain-contact-band-inner,
  .rockbrain-footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .rockbrain-footer-grid {
    gap: 2.25rem;
  }

  .single-post nav[aria-label="文章"] {
    grid-template-columns: 1fr;
  }

  .single-post .post-navigation-link-next {
    text-align: left;
  }
}

@media (max-width: 520px) {
  .rockbrain-business-cards > .wp-block-column {
    padding: 1.25rem;
  }

  .rockbrain-about-section {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }

  .rockbrain-timeline::before {
    left: 0.55rem;
  }

  .rockbrain-timeline li {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    padding-left: 2rem;
  }

  .rockbrain-timeline-year::before {
    position: absolute;
    top: 50%;
    left: -1.7rem;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: var(--rockbrain-green);
    content: "";
    transform: translateY(-50%);
  }

  .rockbrain-contact-actions {
    flex-direction: column;
    gap: 0.55rem;
  }
}

/* 旧版浏览器内核（如 360 安全浏览器 13 的 Chromium 86）不支持 clip-path: path()，
   主题的星号装饰会显示成灰色方块，此时直接隐藏。 */
@supports not (clip-path: path("M0 0")) {
  .is-style-asterisk::before {
    content: none;
  }
}

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

  .rockbrain-business-cards > .wp-block-column,
  .rockbrain-news-card,
  .wp-block-button__link,
  body > .wp-site-blocks > header .wp-block-navigation-item__content,
  body > .wp-site-blocks > header .wp-block-navigation-item__content::after {
    transition: none;
  }
}