.seo-page {
  background: var(--paper);
}

.seo-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 244, 238, 0.94);
  backdrop-filter: blur(16px);
}

.seo-header-inner {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.seo-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.seo-brand img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  object-fit: cover;
}

.seo-brand strong,
.seo-brand small {
  display: block;
}

.seo-brand strong {
  font-size: 18px;
}

.seo-brand small {
  color: var(--ink-soft);
  font-size: 12px;
}

.seo-header-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--ink-soft);
  font-size: 14px;
}

.seo-header-nav a:hover {
  color: var(--red);
}

.seo-phone {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border-radius: 8px;
  color: var(--white);
  background: var(--red);
  font-weight: 700;
}

.seo-hero {
  overflow: hidden;
  padding: 92px 0 76px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(23, 20, 17, 0.94) 0%, rgba(23, 20, 17, 0.78) 52%, rgba(23, 20, 17, 0.35) 100%),
    var(--hero-image) center / cover no-repeat;
}

.seo-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 64px;
  align-items: end;
}

.seo-kicker {
  margin-bottom: 18px;
  color: #e8c899;
  font-size: 13px;
  font-weight: 700;
}

.seo-hero h1 {
  max-width: 800px;
  margin-bottom: 22px;
  font-size: clamp(40px, 5vw, 68px);
}

.seo-hero p {
  max-width: 760px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 18px;
}

.seo-hero-panel {
  padding: 26px;
  border: 1px solid var(--line-light);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.seo-hero-panel strong {
  display: block;
  margin-bottom: 10px;
  color: #e8c899;
}

.seo-hero-panel p {
  margin-bottom: 18px;
  font-size: 15px;
}

.seo-hero-panel a {
  display: inline-flex;
  padding: 11px 16px;
  border-radius: 8px;
  color: var(--ink);
  background: #e8c899;
  font-weight: 700;
}

.seo-content {
  padding: 86px 0;
}

.seo-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 58px;
  align-items: start;
}

.seo-article {
  min-width: 0;
}

.seo-article > section {
  padding: 0 0 54px;
}

.seo-article > section + section {
  padding-top: 54px;
  border-top: 1px solid var(--line);
}

.seo-article h2 {
  margin-bottom: 22px;
  font-size: 38px;
}

.seo-article h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.seo-lead {
  color: var(--ink-soft);
  font-size: 18px;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.seo-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.seo-card p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.seo-steps {
  display: grid;
  gap: 16px;
  margin: 28px 0 0;
  padding: 0;
  counter-reset: seo-step;
  list-style: none;
}

.seo-steps li {
  position: relative;
  padding: 22px 22px 22px 72px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  counter-increment: seo-step;
}

.seo-steps li::before {
  position: absolute;
  top: 22px;
  left: 22px;
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--jade);
  content: counter(seo-step, decimal-leading-zero);
  font-size: 12px;
  font-weight: 700;
}

.seo-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.seo-gallery figure {
  overflow: hidden;
  margin: 0;
  border-radius: 8px;
  background: var(--paper-deep);
}

.seo-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.seo-gallery figcaption {
  padding: 12px 14px;
  color: var(--ink-soft);
  font-size: 13px;
}

.seo-video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.seo-video-card {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.seo-video-card video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #111;
  object-fit: cover;
}

.seo-video-card figcaption {
  padding: 13px 15px;
  color: var(--ink-soft);
  font-size: 13px;
}

.case-detail-hero .seo-hero-panel {
  background: rgba(25, 22, 18, 0.64);
}

.case-disclosure {
  margin-top: 22px;
  padding: 20px 22px;
  border-left: 4px solid var(--red);
  background: rgba(183, 101, 69, 0.08);
}

.case-disclosure strong {
  display: block;
  margin-bottom: 7px;
  color: var(--ink);
}

.case-disclosure p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.case-gallery {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-video-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.case-video-grid .seo-video-card {
  position: relative;
}

.case-video-highlight {
  outline: 2px solid rgba(183, 101, 69, 0.52);
  outline-offset: -2px;
}

.case-video-highlight figcaption::after {
  margin-left: 7px;
  padding: 2px 6px;
  color: var(--white);
  background: var(--red);
  border-radius: 4px;
  content: "施工收尾";
  font-size: 11px;
}

.seo-faq {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.seo-faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.seo-faq summary {
  padding: 20px 22px;
  cursor: pointer;
  font-weight: 700;
}

.seo-faq details p {
  margin: 0;
  padding: 0 22px 22px;
  color: var(--ink-soft);
}

.seo-sidebar {
  position: sticky;
  top: 100px;
  display: grid;
  gap: 18px;
}

.seo-sidebar-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.seo-sidebar-card h3 {
  font-size: 18px;
}

.seo-sidebar-card p,
.seo-sidebar-card ul {
  color: var(--ink-soft);
  font-size: 14px;
}

.seo-sidebar-card ul {
  margin: 0;
  padding-left: 18px;
}

.seo-sidebar-card a {
  color: var(--red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.seo-cta {
  padding: 52px 0;
  color: var(--white);
  background: var(--jade);
}

.seo-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.seo-cta h2 {
  margin-bottom: 8px;
  color: var(--white);
  font-size: 34px;
}

.seo-cta p {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

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

.seo-cta-actions a {
  display: inline-flex;
  padding: 12px 18px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  font-weight: 700;
}

.seo-cta-actions a:first-child {
  border-color: #e8c899;
  color: var(--ink);
  background: #e8c899;
}

.seo-footer {
  padding: 28px 0;
  color: rgba(255, 255, 255, 0.68);
  background: var(--ink);
  font-size: 13px;
}

.seo-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.seo-footer a {
  color: #e8c899;
}

@media (max-width: 900px) {
  .seo-header-nav {
    display: none;
  }

  .seo-hero {
    padding-top: 64px;
  }

  .seo-hero-grid,
  .seo-layout {
    grid-template-columns: 1fr;
  }

  .seo-layout {
    gap: 36px;
  }

  .seo-sidebar {
    position: static;
  }

  .seo-cta-inner,
  .seo-footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .seo-header-inner {
    min-height: 66px;
  }

  .seo-brand small {
    display: none;
  }

  .seo-phone {
    padding: 9px 12px;
    font-size: 13px;
  }

  .seo-hero {
    padding: 54px 0;
  }

  .seo-hero h1 {
    font-size: 38px;
  }

  .seo-content {
    padding: 58px 0;
  }

  .seo-article h2 {
    font-size: 30px;
  }

  .seo-grid,
  .seo-gallery,
  .seo-video-grid {
    grid-template-columns: 1fr;
  }

  .case-gallery,
  .case-video-grid {
    grid-template-columns: 1fr;
  }

  .seo-cta h2 {
    font-size: 28px;
  }
}