/* ===== 品牌档案页 · page-about ===== */
.page-about {
  --ab-orange: #FF4F00;
  --ab-deep: #0B0F19;
  --ab-blue: #00B4D8;
  --ab-green: #0E7C66;
  --ab-wine: #7B2D2D;
  --ab-paper: #F4F7FB;
  --ab-muted: #94A3B8;
  --ab-charcoal: #1E293B;
  --ab-white: #FFFFFF;
  --ab-line: #CBD5E1;
  background: var(--ab-deep);
  color: var(--ab-paper);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about .ab-hero,
.page-about .ab-section[id] {
  scroll-margin-top: 84px;
}

/* 首屏 */
.page-about .ab-hero {
  position: relative;
  padding: 32px 0 64px;
  background: linear-gradient(135deg, rgba(255, 79, 0, 0.1), transparent 45%), var(--ab-deep);
  border-bottom: 2px solid rgba(255, 79, 0, 0.4);
}

.page-about .ab-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  margin-top: 32px;
}

.page-about .ab-hero-title {
  margin: 20px 0 16px;
  font-size: 32px;
  line-height: 1.18;
  font-style: italic;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-about .ab-hero-intro {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 247, 251, 0.74);
  max-width: 38ch;
}

.page-about .ab-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 24px;
}

.page-about .ab-hero-link {
  color: var(--ab-blue);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 2px solid rgba(0, 180, 216, 0.35);
  padding-bottom: 2px;
  transition: border-color 0.3s ease;
}

.page-about .ab-hero-link:hover {
  border-color: var(--ab-blue);
}

.page-about .ab-hero-visual {
  position: relative;
  min-height: 260px;
  overflow: hidden;
}

.page-about .ab-hero-plate {
  position: absolute;
  border-radius: 4px;
  pointer-events: none;
}

.page-about .ab-hero-plate--one {
  width: 82%;
  height: 72%;
  left: 6%;
  top: 4%;
  background: linear-gradient(135deg, rgba(255, 79, 0, 0.25), rgba(11, 15, 25, 0.2));
  clip-path: polygon(0 0, 86% 0, 100% 14%, 100% 100%, 0 100%);
  border: 1px solid rgba(255, 79, 0, 0.4);
}

.page-about .ab-hero-plate--two {
  width: 60%;
  height: 44%;
  right: 0;
  bottom: 0;
  background: linear-gradient(120deg, rgba(0, 180, 216, 0.25), rgba(11, 15, 25, 0.3));
  clip-path: polygon(10% 0, 100% 0, 100% 86%, 90% 100%, 0 100%, 0 14%);
  border: 1px solid rgba(0, 180, 216, 0.3);
}

.page-about .ab-hero-track {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.page-about .ab-hero-chip {
  position: absolute;
  right: 8%;
  bottom: 18%;
  background: rgba(11, 15, 25, 0.78);
  border-left: 4px solid var(--ab-orange);
  padding: 10px 14px;
  color: var(--ab-paper);
  backdrop-filter: blur(6px);
}

.page-about .ab-hero-chip span {
  display: block;
  font-size: 12px;
  font-family: var(--ff-mono, "JetBrains Mono", Consolas, monospace);
  font-style: italic;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ab-orange);
}

.page-about .ab-hero-chip strong {
  font-size: 18px;
  font-weight: 900;
}

.page-about .ab-hero-chip--alt {
  right: auto;
  left: 4%;
  bottom: 6%;
  border-left: 0;
  border-right: 4px solid var(--ab-blue);
  text-align: right;
}

.page-about .ab-hero-chip--alt span {
  color: var(--ab-blue);
}

@media (min-width: 768px) {
  .page-about .ab-hero {
    padding: 48px 0 80px;
  }

  .page-about .ab-hero-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
    min-height: 460px;
    margin-top: 20px;
  }

  .page-about .ab-hero-title {
    font-size: 44px;
  }

  .page-about .ab-hero-intro {
    font-size: 16px;
  }

  .page-about .ab-hero-visual {
    min-height: 360px;
  }
}

@media (min-width: 1200px) {
  .page-about .ab-hero-title {
    font-size: 52px;
  }

  .page-about .ab-hero-visual {
    min-height: 420px;
  }
}

/* 通用章节 */
.page-about .ab-section {
  padding: 64px 0;
}

@media (min-width: 768px) {
  .page-about .ab-section {
    padding: 84px 0;
  }
}

.page-about .ab-section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 32px;
}

.page-about .ab-index {
  font-family: var(--ff-mono, "JetBrains Mono", Consolas, monospace);
  font-size: 13px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.18em;
  color: var(--ab-orange);
}

.page-about .ab-title {
  font-size: 28px;
  font-style: italic;
  font-weight: 900;
  line-height: 1.2;
  margin: 0;
}

.page-about .ab-section-side {
  display: none;
}

@media (min-width: 768px) {
  .page-about .ab-title {
    font-size: 36px;
  }

  .page-about .ab-section-side {
    display: inline-block;
    margin-left: auto;
    height: 64px;
    font-family: var(--ff-mono, "JetBrains Mono", Consolas, monospace);
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    writing-mode: vertical-rl;
    opacity: 0.55;
  }
}

/* 01 品牌使命与愿景 */
.page-about .ab-mission {
  background: var(--ab-paper);
  color: var(--ab-charcoal);
}

.page-about .ab-mission-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .ab-mission-copy p {
  margin: 0 0 16px;
  line-height: 1.8;
  font-size: 15px;
}

.page-about .ab-mission-panel {
  padding: 24px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
}

.page-about .ab-mission-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-mission-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about .ab-mission-list li:last-child {
  border-bottom: 0;
}

.page-about .ab-stat {
  font-family: var(--ff-mono, "JetBrains Mono", Consolas, monospace);
  font-size: 26px;
  font-weight: 800;
  font-style: italic;
  color: var(--ab-orange);
}

.page-about .ab-desc {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ab-muted);
}

@media (min-width: 960px) {
  .page-about .ab-mission-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 48px;
  }
}

/* 02 发展历程 */
.page-about .ab-history {
  background: var(--ab-deep);
  color: var(--ab-paper);
}

.page-about .ab-history-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .ab-tl-rail {
  display: grid;
  gap: 14px;
}

.page-about .ab-tl-item {
  background: rgba(255, 255, 255, 0.04);
  border-left: 3px solid var(--ab-orange);
  border-radius: 0 8px 8px 0;
  overflow: hidden;
  transition: background 0.35s ease;
}

.page-about .ab-tl-item[open] {
  background: rgba(255, 79, 0, 0.1);
}

.page-about .ab-tl-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
}

.page-about .ab-tl-item summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-tl-version {
  font-family: var(--ff-mono, "JetBrains Mono", Consolas, monospace);
  font-size: 13px;
  font-weight: 900;
  font-style: italic;
  color: var(--ab-orange);
  border: 1px solid rgba(255, 79, 0, 0.55);
  border-radius: 2px;
  padding: 2px 8px;
}

.page-about .ab-tl-name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
}

.page-about .ab-tl-toggle {
  margin-left: auto;
  font-family: var(--ff-mono, "JetBrains Mono", Consolas, monospace);
  font-size: 24px;
  color: var(--ab-orange);
  transition: transform 0.3s ease;
}

.page-about .ab-tl-item[open] .ab-tl-toggle {
  transform: rotate(45deg);
}

.page-about .ab-tl-detail {
  padding: 0 20px 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ab-muted);
  max-width: 64ch;
}

.page-about .ab-history-figure {
  margin: 0;
}

.page-about .ab-history-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
}

.page-about .ab-history-figure figcaption {
  margin-top: 10px;
  font-family: var(--ff-mono, "JetBrains Mono", Consolas, monospace);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ab-muted);
}

@media (min-width: 960px) {
  .page-about .ab-history-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-tl-detail {
    padding: 0 28px 22px 82px;
  }
}

/* 03 福建本地优势 */
.page-about .ab-fujian {
  background: var(--ab-charcoal);
  color: var(--ab-paper);
}

.page-about .ab-fujian .ab-index {
  color: var(--ab-green);
}

.page-about .ab-fujian-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .ab-fujian-figure {
  margin: 0;
  position: relative;
}

.page-about .ab-fujian-figure::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -12px;
  width: 46%;
  height: 5px;
  background: var(--ab-orange);
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
}

.page-about .ab-fujian-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 6px;
}

.page-about .ab-fujian-copy p {
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 16px;
  color: rgba(244, 247, 251, 0.82);
}

.page-about .ab-coastline {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 20px;
}

@media (min-width: 960px) {
  .page-about .ab-fujian-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: center;
  }
}

/* 04 团队规模与专业资质 */
.page-about .ab-team {
  background: var(--ab-paper);
  color: var(--ab-charcoal);
}

.page-about .ab-team-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-about .ab-team-copy p {
  margin: 0 0 16px;
  line-height: 1.8;
  font-size: 15px;
}

.page-about .ab-team-figure {
  margin: 0;
}

.page-about .ab-team-figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 6px;
  filter: saturate(0.9) contrast(1.05);
}

.page-about .ab-team-badges {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-about .ab-badge {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  position: relative;
  background: var(--ab-white);
  border: 1px solid var(--ab-line);
  border-radius: 4px;
  padding: 16px;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .ab-badge:hover,
.page-about .ab-badge:focus-within {
  box-shadow: 0 12px 28px rgba(11, 15, 25, 0.14);
  transform: translateY(-2px);
}

.page-about .ab-badge-shield {
  flex-shrink: 0;
  width: 48px;
}

.page-about .ab-badge-info strong {
  display: block;
  font-size: 17px;
  font-weight: 900;
  font-style: italic;
  line-height: 1.2;
}

.page-about .ab-badge-info span {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ab-muted);
}

.page-about .ab-badge-tip {
  grid-column: 1 / -1;
  margin: 0;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.7;
  background: rgba(255, 79, 0, 0.07);
  border-left: 3px solid var(--ab-orange);
  color: var(--ab-charcoal);
}

@media (min-width: 700px) {
  .page-about .ab-team-badges {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .ab-team-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .ab-team-copy {
    grid-column: 1;
  }

  .page-about .ab-team-figure {
    grid-column: 1;
    grid-row: 2;
  }

  .page-about .ab-team-badges {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
    grid-template-columns: minmax(0, 1fr);
    align-content: flex-start;
  }

  .page-about .ab-badge-tip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    width: 230px;
    padding: 12px 14px;
    background: var(--ab-charcoal);
    border-left: 3px solid var(--ab-orange);
    color: var(--ab-paper);
    box-shadow: 0 14px 30px rgba(11, 15, 25, 0.35);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: 6;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
  }

  .page-about .ab-badge:hover .ab-badge-tip,
  .page-about .ab-badge:focus-within .ab-badge-tip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
  }
}

/* 05 服务承诺 */
.page-about .ab-promise {
  position: relative;
  padding: 72px 0;
  overflow: hidden;
  background: linear-gradient(125deg, #0B0F19 0%, #1E293B 55%, #7B2D2D 130%);
  color: var(--ab-paper);
  text-align: center;
}

.page-about .ab-promise::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ab-orange), transparent 40%, var(--ab-blue));
}

.page-about .ab-promise-inner {
  position: relative;
  z-index: 1;
}

.page-about .ab-promise-statement {
  margin: 0 auto 16px;
  max-width: 46ch;
  font-size: 20px;
  font-weight: 700;
  font-style: italic;
  line-height: 1.55;
}

.page-about .ab-promise-note {
  margin: 0 auto 28px;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 247, 251, 0.65);
}

.page-about .ab-promise-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.page-about .ab-btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(244, 247, 251, 0.55);
  color: var(--ab-paper);
  padding: 12px 22px;
  font-size: 14px;
  text-decoration: none;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.page-about .ab-btn-ghost:hover {
  background: rgba(244, 247, 251, 0.1);
  border-color: var(--ab-white);
}

.page-about .ab-promise-link {
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--ab-blue);
  text-decoration: none;
  border-bottom: 2px solid rgba(0, 180, 216, 0.4);
  transition: border-color 0.3s ease;
}

.page-about .ab-promise-link:hover {
  border-color: var(--ab-blue);
}

@media (min-width: 640px) {
  .page-about .ab-promise-actions {
    flex-direction: row;
    justify-content: center;
    gap: 20px;
  }
}