/* ===== 品牌概览页 /mission/ ===== */

.page-about .grid-12 > * {
  min-width: 0;
}

/* --- 首屏 --- */
.page-about .about-hero {
  padding-top: 28px;
}

.page-about .about-hero-grid {
  margin-top: 26px;
  gap: 28px;
  align-items: start;
}

.page-about .about-hero-lead h1 {
  font-family: var(--font-display);
  font-size: clamp(38px, 9vw, 84px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
}

.page-about .about-h1-accent {
  color: var(--cyan);
  box-shadow: inset 0 -0.14em 0 rgba(255, 162, 60, 0.35);
}

.page-about .about-hero-sub {
  max-width: 46ch;
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-metrics {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-metric {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 14px;
  background: var(--panel);
}

.page-about .about-metric-value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6vw, 34px);
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-metric-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* --- 章节索引条 --- */
.page-about .about-index {
  margin-top: 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
}

.page-about .about-index-list > li {
  flex: 1 1 auto;
}

.page-about .about-index-link {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  border-left: 1px solid var(--line);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-index-list > li:first-child .about-index-link {
  border-left: 0;
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--cyan);
  background: rgba(53, 240, 200, 0.06);
}

.page-about .about-index-idx {
  color: var(--amber);
}

/* --- 首屏通栏图 --- */
.page-about .about-hero-figure {
  margin: 30px 0 0;
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- 01 服务内容 --- */
.page-about .about-serve-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-serve-item {
  padding: 22px 20px;
  background: var(--ink);
  transition: background var(--dur) var(--ease);
}

.page-about .about-serve-item:hover {
  background: var(--panel);
}

.page-about .about-serve-idx {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .about-serve-title {
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 10px 0 8px;
}

.page-about .about-serve-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
}

/* --- 02 覆盖范围 --- */
.page-about .about-scope-grid {
  margin-top: 28px;
  gap: 28px;
  align-items: start;
}

.page-about .about-matrix-box {
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
}

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

.page-about .about-matrix-cap {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .about-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}

.page-about .about-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-about .about-table caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--amber);
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.page-about .about-table th,
.page-about .about-table td {
  padding: 11px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-about .about-table thead th {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--muted);
  background: var(--panel);
}

.page-about .about-table tbody tr:nth-child(odd) {
  background: rgba(23, 66, 58, 0.28);
}

.page-about .about-table tbody tr {
  transition: background var(--dur) var(--ease);
}

.page-about .about-table tbody tr:hover {
  background: rgba(53, 240, 200, 0.09);
}

.page-about .about-table tbody th {
  font-weight: 600;
  color: var(--text);
}

.page-about .about-table tbody td:first-of-type {
  font-family: var(--font-mono);
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.page-about .about-table tbody td:last-child {
  color: var(--muted);
}

.page-about .about-scope-foot {
  margin: 22px 0 0;
  padding: 18px 20px;
  border-left: 3px solid var(--cyan);
  background: var(--panel);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

/* --- 03 团队与节奏 --- */
.page-about .about-team-grid {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-role {
  padding: 18px;
  background: var(--panel);
  border-left: 3px solid var(--teal);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-role:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
}

.page-about .about-role-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role-name {
  font-family: var(--font-display);
  font-size: 22px;
  margin: 10px 0 6px;
}

.page-about .about-role-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-team-notes {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-team-notes p {
  margin: 0;
  padding: 14px 16px;
  background: var(--ink);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-about .about-team-notes p::before {
  content: "▪";
  margin-right: 8px;
  color: var(--amber);
}

/* --- 04 版本演进 --- */
.page-about .about-version-grid {
  margin-top: 28px;
  gap: 32px;
  align-items: start;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.page-about .about-tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 18px 0 20px 22px;
  border-bottom: 1px dashed var(--line);
  transition: background var(--dur) var(--ease);
}

.page-about .about-tl-item:last-child {
  border-bottom: 0;
}

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 26px;
  width: 9px;
  height: 9px;
  background: var(--teal);
  transform: rotate(45deg);
  transition: background var(--dur) var(--ease);
}

.page-about .about-tl-item:hover {
  background: rgba(53, 240, 200, 0.04);
}

.page-about .about-tl-item:hover::before {
  background: var(--amber);
}

.page-about .about-tl-ver {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  transition: color var(--dur) var(--ease);
}

.page-about .about-tl-item:hover .about-tl-ver {
  color: var(--amber);
}

.page-about .about-tl-title {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.25;
  margin: 0 0 8px;
}

.page-about .about-tl-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-tl-note {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 2px solid rgba(255, 162, 60, 0.5);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-tl-item:hover .about-tl-note {
  border-color: var(--amber);
  color: var(--text);
}

.page-about .about-tl-figure figure {
  margin: 0;
}

.page-about .about-tl-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-tl-cap {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* --- 05 数据来源与合作 --- */
.page-about .about-partner-grid {
  gap: 32px;
  align-items: start;
}

.page-about .about-partner-figure figure {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-about .about-partner-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-partner-text {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-partner-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-partner-item {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-partner-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--cyan);
}

/* --- 06 标签墙 --- */
.page-about .about-tabs {
  margin-top: 26px;
}

.page-about .about-tag-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 20px;
}

.page-about .about-tag-wall .tag {
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-tag-wall .tag:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-2px);
}

/* --- 结尾 --- */
.page-about .about-close-inner {
  padding: 28px 22px;
  border: 1px solid var(--line);
  background: linear-gradient(140deg, #0A2E27 0%, #05201A 72%);
}

.page-about .about-close h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 5.4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.page-about .about-close p {
  margin: 0 0 22px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-close-links {
  gap: 10px;
}

/* --- 断点 --- */
@media (min-width: 720px) {
  .page-about .about-serve-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-team-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-tl-item {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }

  .page-about .about-close-inner {
    padding: 40px 36px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero-grid {
    gap: 44px;
  }

  .page-about .about-scope-grid {
    gap: 40px;
  }

  .page-about .about-team-notes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-scope-foot {
    padding: 22px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    transform: none !important;
  }
}