/**
 * @file pages.css
 * @description 内页专用样式（解决方案 / 平台能力 / 技术架构 / 合规资质 / 关于我们 / 预约演示 / 404）。
 *              复用 styles.css 中的设计 Token，仅在需要独立版式的页面按需引入。
 * @author QQQ Dev Team
 * @created 2026-11-03
 */

/* ============================================================
 * 工具类
 * ============================================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.grid {
  display: grid;
  gap: 24px;
}

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

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

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--paper-light);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  white-space: nowrap;
}

.badge--blue {
  border-color: rgba(44, 107, 168, 0.28);
  background: var(--blue-wash);
  color: var(--blue-deep);
}

.badge--seal {
  border-color: rgba(168, 69, 58, 0.28);
  background: rgba(168, 69, 58, 0.08);
  color: var(--seal);
}

.badge--green {
  border-color: rgba(47, 125, 91, 0.28);
  background: rgba(47, 125, 91, 0.08);
  color: var(--green);
}

/* 内页补充按钮 */
.btn-light {
  background: var(--paper-light);
  color: var(--ink);
  border-color: transparent;
}

.btn-light:hover {
  background: #fff;
  transform: translateY(-2px);
}

.btn-outline-light {
  background: transparent;
  color: var(--paper-light);
  border-color: rgba(255, 253, 248, 0.36);
}

.btn-outline-light:hover {
  border-color: rgba(255, 253, 248, 0.8);
  background: rgba(255, 253, 248, 0.08);
}

/* ============================================================
 * 内页页头
 * ============================================================ */
.page-hero {
  position: relative;
  padding-top: calc(var(--header-h) + clamp(44px, 6vw, 78px));
  padding-bottom: clamp(38px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -34%;
  right: -8%;
  width: 44vw;
  height: 44vw;
  max-width: 540px;
  max-height: 540px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(44, 107, 168, 0.1) 0%,
    rgba(44, 107, 168, 0.03) 46%,
    transparent 68%
  );
  pointer-events: none;
}

.page-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.62fr);
  gap: clamp(26px, 4vw, 64px);
  align-items: end;
}

.page-hero-copy {
  display: grid;
  gap: 16px;
  justify-items: start;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
}

.breadcrumb a {
  color: var(--ink-4);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--blue);
}

.breadcrumb i {
  font-style: normal;
  opacity: 0.45;
}

.breadcrumb span {
  color: var(--ink-2);
}

.page-hero h1 {
  font-family: var(--serif);
  font-size: clamp(1.95rem, 4vw, 3.35rem);
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: 0.01em;
  max-width: 26ch;
}

.page-hero-lede {
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-3);
}

.page-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 4px;
}

/* 页头右侧摘要卡 */
.page-hero-aside {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.page-hero-aside > div {
  display: grid;
  gap: 2px;
  padding: 13px 16px;
  background: var(--paper-light);
}

.page-hero-aside dt {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--blue);
}

.page-hero-aside dd {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.55;
}

/* ============================================================
 * 文档式两栏：目录 + 正文
 * ============================================================ */
.doc-grid {
  display: grid;
  grid-template-columns: 188px minmax(0, 1fr);
  gap: clamp(28px, 4vw, 60px);
  align-items: start;
}

.toc {
  position: sticky;
  top: calc(var(--header-h) + 26px);
  display: grid;
  gap: 2px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.toc-title {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 8px;
}

.toc a {
  padding: 5px 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-3);
  border-left: 1px solid transparent;
  margin-left: -15px;
  padding-left: 14px;
  transition: color 0.2s, border-color 0.2s;
}

.toc a:hover {
  color: var(--blue);
}

.toc a.is-active {
  color: var(--blue-deep);
  font-weight: 600;
  border-left-color: var(--blue);
}

.doc-body {
  display: grid;
  gap: clamp(40px, 5vw, 66px);
  min-width: 0;
}

.doc-section {
  display: grid;
  gap: 16px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.doc-section-head {
  display: grid;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.doc-section-index {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--blue);
}

.doc-section h2 {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.4vw, 1.9rem);
  font-weight: 600;
  line-height: 1.35;
}

.doc-section > p {
  max-width: 70ch;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--ink-2);
}

.doc-section > p + p {
  margin-top: -4px;
}

/* 要点列表 */
.tick-list {
  display: grid;
  gap: 9px;
  max-width: 74ch;
}

.tick-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.tick-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  opacity: 0.55;
}

.tick-list li strong {
  color: var(--ink);
}

/* ============================================================
 * 角色卡（面向谁）
 * ============================================================ */
.role-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.role-card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(20px, 2.4vw, 30px);
  background: var(--paper-light);
  transition: background 0.3s;
}

.role-card:hover {
  background: var(--paper);
}

.role-head {
  display: flex;
  align-items: center;
  gap: 11px;
}

.role-icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex: none;
  border-radius: 2px;
  background: var(--blue-wash);
  color: var(--blue-deep);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.role-card h3 {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
}

.role-card > p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-3);
}

.role-points {
  display: grid;
  gap: 7px;
  margin-top: 2px;
}

.role-points li {
  position: relative;
  padding-left: 15px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

.role-points li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--blue);
  opacity: 0.6;
  font-size: 11px;
}

/* ============================================================
 * 证据卡（可核查的陈述）
 * ============================================================ */
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.evidence-card {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 20px 22px;
  background: var(--paper-light);
}

.evidence-card dt {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--seal);
}

.evidence-card dd {
  font-family: var(--serif);
  font-size: clamp(19px, 2.1vw, 25px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
}

.evidence-card p {
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-3);
}

/* ============================================================
 * 数据表格
 * ============================================================ */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper-light);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  font-size: 12.5px;
}

.data-table caption {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--ink-4);
  border-bottom: 1px solid var(--line);
}

.data-table th,
.data-table td {
  padding: 11px 16px;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  border-bottom: 1px solid var(--line-soft);
}

.data-table thead th {
  background: var(--paper-deep);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table td code {
  padding: 1px 5px;
  border-radius: 2px;
  background: var(--paper-deep);
  font-family: var(--mono);
  font-size: 11px;
  color: var(--blue-deep);
}

/* ============================================================
 * 专利清单
 * ============================================================ */
.patent-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.patent-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 15px 20px;
  background: var(--paper-light);
  transition: background 0.25s;
}

.patent-item:hover {
  background: var(--paper);
}

.patent-code {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--seal);
}

.patent-item strong {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

.patent-item small {
  display: block;
  margin-top: 3px;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink-3);
}

/* ============================================================
 * 架构分层
 * ============================================================ */
.layer-stack {
  display: grid;
  gap: 6px;
}

.layer {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  padding: 13px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--blue);
  border-radius: 2px;
  background: var(--paper-light);
  transition: border-left-color 0.25s, transform 0.25s var(--ease-out);
}

.layer:hover {
  border-left-color: var(--seal);
  transform: translateX(3px);
}

.layer-label {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
}

.layer-body {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.layer-body span {
  padding: 3px 10px;
  border-radius: 2px;
  background: var(--paper-deep);
  font-size: 11.5px;
  color: var(--ink-2);
  white-space: nowrap;
}

/* ============================================================
 * 代码块
 * ============================================================ */
.code-block {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--blue);
  border-radius: 2px;
  background: var(--paper-deep);
  overflow-x: auto;
}

.code-block pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.8;
  color: var(--ink-2);
  white-space: pre;
}

.code-block .c {
  color: var(--ink-4);
}

.code-block .k {
  color: var(--blue-deep);
  font-weight: 600;
}

.code-block .s {
  color: var(--seal);
}

/* ============================================================
 * 强调条
 * ============================================================ */
.callout {
  display: grid;
  grid-template-columns: 2px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--paper-deep);
}

.callout::before {
  content: '';
  border-radius: 1px;
  background: var(--seal);
}

.callout p {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ink-2);
  max-width: 72ch;
}

.callout strong {
  color: var(--ink);
}

/* ============================================================
 * 横向时间轴
 * ============================================================ */
.timeline-h {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(148px, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow-x: auto;
}

.timeline-h > div {
  padding: 15px 18px;
  background: var(--paper-light);
  min-width: 0;
}

.timeline-h span {
  display: block;
  margin-bottom: 4px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--seal);
}

.timeline-h strong {
  display: block;
  margin-bottom: 3px;
  font-size: 12.5px;
  color: var(--ink);
}

.timeline-h p {
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--ink-3);
}

/* ============================================================
 * FAQ
 * ============================================================ */
.faq-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.faq-item {
  background: var(--paper-light);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  transition: background 0.2s;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:hover {
  background: var(--paper);
}

.faq-item summary::after {
  content: '+';
  flex: none;
  font-family: var(--mono);
  font-size: 15px;
  color: var(--ink-4);
  transition: color 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
  color: var(--blue);
}

.faq-item p {
  padding: 0 20px 18px;
  max-width: 78ch;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

/* ============================================================
 * CTA 条
 * ============================================================ */
.cta-band {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper-light);
}

.cta-band::before {
  content: '';
  position: absolute;
  top: -46%;
  right: -4%;
  width: 38vw;
  height: 38vw;
  max-width: 460px;
  max-height: 460px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(74, 144, 217, 0.22) 0%,
    transparent 66%
  );
  pointer-events: none;
}

.cta-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  padding: clamp(42px, 5.5vw, 68px) 0;
}

.cta-copy {
  display: grid;
  gap: 9px;
}

.cta-band h2 {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 3vw, 2.3rem);
  font-weight: 600;
  line-height: 1.32;
  color: var(--paper-light);
  max-width: 24ch;
}

.cta-band p {
  max-width: 48ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(255, 253, 248, 0.66);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ============================================================
 * 下一页导航
 * ============================================================ */
.next-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.next-nav a {
  display: grid;
  gap: 5px;
  padding: 24px 40px;
  background: var(--paper);
  transition: background 0.25s;
}

.next-nav a:hover {
  background: var(--paper-light);
}

.next-nav span {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--ink-4);
}

.next-nav strong {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}

.next-nav a:last-child {
  text-align: right;
  justify-items: end;
}

/* ============================================================
 * 404
 * ============================================================ */
.err-wrap {
  display: grid;
  place-items: center;
  gap: 16px;
  min-height: 64vh;
  padding-top: calc(var(--header-h) + 60px);
  padding-bottom: 60px;
  text-align: center;
}

.err-code {
  font-family: var(--mono);
  font-size: clamp(68px, 13vw, 140px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--blue);
  opacity: 0.16;
}

.err-wrap h1 {
  margin-top: -12px;
  font-family: var(--serif);
  font-size: clamp(1.4rem, 3vw, 2.15rem);
  font-weight: 600;
}

.err-wrap p {
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-3);
}

.err-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 6px;
}

/* ============================================================
 * 内页响应式
 * ============================================================ */
@media (max-width: 1180px) {
  .page-hero-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.52fr);
  }

  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1024px) {
  .doc-grid {
    grid-template-columns: 156px minmax(0, 1fr);
    gap: 30px;
  }

  .evidence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 860px) {
  .page-hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-hero-aside {
    max-width: 100%;
  }

  .doc-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .toc {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 0 0 14px;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .toc-title {
    width: 100%;
    margin-bottom: 2px;
  }

  .toc a {
    margin-left: 0;
    padding: 5px 11px;
    border: 1px solid var(--line);
    border-radius: 2px;
    font-size: 12px;
  }

  .toc a.is-active {
    padding-left: 11px;
    border-color: var(--blue);
    background: var(--blue-wash);
  }

  .role-grid,
  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .layer {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .next-nav a {
    padding: 20px 24px;
  }
}

@media (max-width: 640px) {
  .role-grid,
  .evidence-grid,
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .patent-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
    padding: 14px 16px;
  }

  .patent-item .badge {
    grid-column: 2;
    justify-self: start;
  }

  .next-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .next-nav a:last-child {
    text-align: left;
    justify-items: start;
  }

  .next-nav a {
    padding: 18px 24px;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .timeline-h {
    grid-auto-columns: minmax(130px, 1fr);
  }

  .page-hero h1 {
    font-size: 1.75rem;
  }
}

/* ============================================================
 * 深色区块内的通用元件适配
 * .contact（深蓝）与 .trust（深墨）区域复用浅色页面的组件时，
 * 必须覆盖正文色，否则会形成深底深字。
 * ============================================================ */
.contact .tick-list li,
.trust .tick-list li {
  color: rgba(244, 241, 232, 0.78);
}

.contact .tick-list li strong,
.trust .tick-list li strong {
  color: #fff;
}

.contact .tick-list li::before,
.trust .tick-list li::before {
  background: #8fb6da;
  opacity: 1;
}

.contact .badge,
.trust .badge {
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
  color: rgba(244, 241, 232, 0.86);
}

.contact .callout,
.trust .callout {
  border-color: rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.06);
}

.contact .callout p,
.trust .callout p {
  color: rgba(244, 241, 232, 0.8);
}

.contact .callout strong,
.trust .callout strong {
  color: #fff;
}

/* ============================================================
 * 业务矩阵卡（首页首屏）
 * 用于表达「企业有多条业务线」，与单一产品档案卡形成区别。
 * ============================================================ */
.matrix {
  position: relative;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper-light);
  box-shadow: 0 30px 70px -34px rgba(16, 27, 42, 0.42);
}

.matrix::before,
.matrix::after {
  content: '';
  position: absolute;
  width: 13px;
  height: 13px;
  border: 1.5px solid var(--blue);
  opacity: 0.45;
}

.matrix::before {
  top: 9px;
  left: 9px;
  border-right: 0;
  border-bottom: 0;
}

.matrix::after {
  bottom: 9px;
  right: 9px;
  border-left: 0;
  border-top: 0;
}

.matrix-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

.matrix-head strong {
  display: block;
  margin-top: 3px;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
}

.matrix-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 2px;
  background: var(--blue-wash);
  color: var(--blue-deep);
  font-size: 10.5px;
  font-weight: 600;
  white-space: nowrap;
}

.matrix-list {
  display: grid;
  gap: 1px;
  margin-top: 16px;
  background: var(--line);
  border: 1px solid var(--line);
}

.matrix-row {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 13px 14px;
  background: #fff;
  transition: background 0.25s;
}

.matrix-row:hover {
  background: var(--paper);
}

.matrix-row .idx {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-4);
}

.matrix-row b {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}

.matrix-row small {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--ink-3);
}

.matrix-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
}

/* 业务方向卡（首页与业务页共用） */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.biz-card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(24px, 2.8vw, 34px);
  background: var(--paper-light);
  transition: background 0.3s;
}

.biz-card:hover {
  background: var(--paper);
}

.biz-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.biz-code {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--blue);
}

.biz-card h3 {
  font-family: var(--serif);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 600;
  line-height: 1.35;
}

.biz-card > p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-3);
}

.biz-points {
  display: grid;
  gap: 6px;
  margin-top: 2px;
}

.biz-points li {
  position: relative;
  padding-left: 15px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

.biz-points li::before {
  content: '·';
  position: absolute;
  left: 3px;
  top: -1px;
  font-size: 16px;
  color: var(--blue);
}

.biz-card .text-link {
  margin-top: 6px;
  justify-self: start;
}

@media (max-width: 860px) {
  .biz-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ============================================================
 * 通用卡片与浅色底区块
 * styles.css 未提供，供企业首页与项目页复用。
 * ============================================================ */
.card {
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--paper-light);
  box-shadow: 0 18px 44px -30px rgba(16, 27, 42, 0.28);
}

.card h3 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
}

.card p {
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-3);
}

.section--tint {
  background: var(--paper-deep);
}

/* ============================================================
 * 门户导航：分组下拉（桌面）/ 手风琴分组（移动端）
 * ============================================================ */
.nav-group {
  position: relative;
}

.nav-group-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 0;
  border: 0;
  background: transparent;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink-2);
  cursor: pointer;
  transition: color 0.2s;
}

.nav-group-btn:hover,
.nav-group-btn[aria-expanded='true'] {
  color: var(--blue);
}

.nav-group.has-active .nav-group-btn {
  color: var(--blue);
  font-weight: 600;
}

.nav-caret {
  width: 5px;
  height: 5px;
  margin-top: -3px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.25s var(--ease-out), margin 0.25s;
}

.nav-group.is-open .nav-caret {
  margin-top: 2px;
  transform: rotate(-135deg);
}

.nav-panel {
  position: absolute;
  top: calc(100% + 18px);
  left: -16px;
  z-index: 20;
  display: grid;
  gap: 2px;
  width: max-content;
  min-width: 214px;
  max-width: 320px;
  padding: 10px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--blue);
  background: var(--paper-light);
  box-shadow: 0 28px 56px -30px rgba(16, 27, 42, 0.42);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.24s, transform 0.24s var(--ease-out),
    visibility 0.24s;
}

/* 末个分组的展开面板右对齐，避免贴近视口右缘被裁切 */
.nav-group:last-of-type .nav-panel {
  left: auto;
  right: -16px;
}

.nav-group.is-open .nav-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-panel-label {
  padding: 5px 12px 7px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.2em;
  color: var(--ink-4);
}

.site-nav .nav-panel a {
  display: block;
  width: 100%;
  padding: 9px 12px;
  border: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-2);
  white-space: nowrap;
  transition: background 0.2s, color 0.2s;
}

.site-nav .nav-panel a::after {
  display: none;
}

.site-nav .nav-panel a:hover,
.site-nav .nav-panel a.is-active {
  background: var(--blue-wash);
  color: var(--blue-deep);
}

.site-nav .nav-login {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 12px;
  border: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-2);
  white-space: nowrap;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.site-nav .nav-login::after {
  display: none;
}

.site-nav .nav-login:hover {
  border-color: var(--blue);
  background: var(--blue-wash);
  color: var(--blue-deep);
}

/* ============================================================
 * 门户入口网格
 * ============================================================ */
.portal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.portal-card {
  position: relative;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  gap: 9px;
  padding: clamp(22px, 2.4vw, 30px);
  background: var(--paper-light);
  transition: background 0.3s;
}

.portal-card:hover {
  background: var(--blue-wash-soft);
}

.portal-card::after {
  content: '→';
  position: absolute;
  top: 24px;
  right: 26px;
  font-size: 14px;
  color: var(--ink-4);
  transition: color 0.25s, transform 0.25s var(--ease-out);
}

.portal-card:hover::after {
  color: var(--blue);
  transform: translateX(3px);
}

.portal-card .mono-label {
  color: var(--blue);
  padding-right: 20px;
}

.portal-card h3 {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 600;
  line-height: 1.4;
}

.portal-card p {
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-3);
}

.portal-card small {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  color: var(--ink-4);
}

.portal-card--external .mono-label {
  color: var(--seal);
}

/* ============================================================
 * 可信度条
 * ============================================================ */
.cred-wrap {
  padding: clamp(52px, 6vw, 76px) 0;
}

.cred-bar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--line);
}

.cred-item {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 24px 28px;
  background: var(--paper-deep);
}

.cred-item span {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--blue);
}

.cred-item strong {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.cred-item p {
  font-size: 11.5px;
  line-height: 1.75;
  color: var(--ink-3);
}

/* ============================================================
 * 洞察与动态：筛选与文章卡
 * ============================================================ */
.post-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.chip-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: transparent;
  font-size: 12.5px;
  color: var(--ink-2);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.chip:hover {
  border-color: var(--blue);
  color: var(--blue-deep);
}

.chip[aria-pressed='true'] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper-light);
}

.post-count {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 24px;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.post-card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(22px, 2.4vw, 28px);
  background: var(--paper-light);
  transition: background 0.3s;
}

.post-card:hover {
  background: var(--paper);
}

.post-card[hidden] {
  display: none;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.08em;
  color: var(--ink-4);
}

.post-meta em {
  font-style: normal;
  color: var(--seal);
}

.post-card h3 {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
}

.post-excerpt {
  font-size: 12.5px;
  line-height: 1.85;
  color: var(--ink-3);
}

.post-more {
  margin-top: 2px;
}

.post-more summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  list-style: none;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--blue);
  cursor: pointer;
}

.post-more summary::-webkit-details-marker {
  display: none;
}

.post-more summary::after {
  content: '+';
  font-size: 12px;
}

.post-more[open] summary::after {
  content: '−';
}

.post-more .post-body {
  display: grid;
  gap: 9px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.post-more .post-body p {
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.post-tags span {
  padding: 3px 8px;
  border: 1px dashed var(--line-strong);
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.05em;
  color: var(--ink-4);
}

.post-empty {
  display: none;
  padding: 44px 0;
  text-align: center;
  font-size: 13px;
  color: var(--ink-3);
}

/* ============================================================
 * 资料下载清单
 * ============================================================ */
.dl-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 20px;
  border: 1px solid var(--line);
  border-bottom: 0;
  background: var(--paper-deep);
}

.dl-toolbar p {
  font-size: 12.5px;
  color: var(--ink-3);
}

.dl-toolbar span {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  color: var(--ink-4);
}

.dl-list {
  border: 1px solid var(--line);
  border-radius: 0 0 3px 3px;
  background: var(--paper-light);
  overflow: hidden;
}

.dl-item {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) 132px 116px 108px;
  gap: 20px;
  align-items: center;
  padding: 20px 22px;
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.2s;
}

.dl-item:last-child {
  border-bottom: 0;
}

.dl-item:hover {
  background: var(--paper);
}

.dl-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: var(--paper-deep);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: var(--blue-deep);
}

.dl-item h3 {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
}

.dl-item p {
  margin-top: 4px;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--ink-3);
}

.dl-meta {
  display: grid;
  gap: 3px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.06em;
  color: var(--ink-4);
}

.dl-meta strong {
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--ink-2);
}

.dl-action {
  justify-self: end;
}

/* ============================================================
 * FAQ：分组 + 侧栏导航
 * ============================================================ */
.faq-layout {
  display: grid;
  grid-template-columns: 212px minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.faq-nav {
  position: sticky;
  top: calc(var(--header-h) + 26px);
  display: grid;
  gap: 2px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.faq-nav .toc-title {
  margin-bottom: 8px;
}

.faq-nav a {
  padding: 7px 0 7px 14px;
  margin-left: -15px;
  border-left: 1px solid transparent;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-3);
  transition: color 0.2s, border-color 0.2s;
}

.faq-nav a:hover {
  color: var(--blue);
}

.faq-nav a.is-active {
  border-left-color: var(--blue);
  color: var(--blue-deep);
  font-weight: 600;
}

.faq-body {
  display: grid;
  gap: clamp(34px, 4vw, 52px);
  min-width: 0;
}

.faq-group {
  display: grid;
  gap: 14px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.faq-group-head h2 {
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  font-weight: 600;
  line-height: 1.4;
}

.faq-group-head span {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--ink-4);
}

.faq-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 18px;
}

.faq-tools p {
  font-size: 12.5px;
  color: var(--ink-3);
}

/* ============================================================
 * 页脚联系方式
 * ============================================================ */
.footer-contact {
  display: grid;
  gap: 7px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(246, 244, 238, 0.12);
}

.footer-contact div {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.footer-contact dt {
  flex: 0 0 54px;
  font-family: var(--mono);
  font-size: 8.5px;
  letter-spacing: 0.14em;
  color: rgba(246, 244, 238, 0.38);
}

.footer-contact dd {
  font-size: 11.5px;
  line-height: 1.6;
  color: rgba(246, 244, 238, 0.6);
}

.footer-contact a:hover {
  color: var(--paper-light);
}

/* ============================================================
 * 返回顶部
 * ============================================================ */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 95;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line-strong);
  background: rgba(255, 253, 248, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-2);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s var(--ease-out),
    visibility 0.3s, background 0.2s, color 0.2s;
}

.to-top:hover {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper-light);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ============================================================
 * 门户新增组件响应式
 * ============================================================ */
@media (max-width: 1180px) {
  .portal-grid,
  .post-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dl-item {
    grid-template-columns: 48px minmax(0, 1fr) 118px 96px;
    gap: 16px;
  }

  .dl-action {
    grid-column: 2 / -1;
    justify-self: start;
  }
}

@media (max-width: 1024px) {
  .site-nav {
    gap: 16px;
  }

  .nav-panel {
    left: -12px;
  }

  .cred-item {
    padding: 20px 22px;
  }
}

@media (max-width: 860px) {
  .site-nav {
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .nav-group {
    width: 100%;
    border-bottom: 1px solid var(--line-soft);
  }

  .nav-group-btn {
    justify-content: space-between;
    width: 100%;
    padding: 14px 0;
    font-size: 14px;
  }

  .nav-panel {
    position: static;
    display: none;
    width: 100%;
    max-width: none;
    min-width: 0;
    grid-template-columns: 1fr 1fr;
    gap: 4px 8px;
    padding: 0 0 12px;
    border: 0;
    background: transparent;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-group.is-open .nav-panel {
    display: grid;
  }

  .nav-panel-label {
    display: none;
  }

  .site-nav .nav-panel a {
    padding: 9px 11px;
    border: 1px solid var(--line-soft);
    background: var(--paper);
    font-size: 12.5px;
    white-space: normal;
  }

  .site-nav .nav-login {
    justify-content: center;
    width: 100%;
    margin-top: 14px;
    padding: 12px 18px;
  }

  .faq-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .faq-nav {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 0 0 14px;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .faq-nav .toc-title {
    width: 100%;
    margin-bottom: 2px;
  }

  .faq-nav a {
    margin-left: 0;
    padding: 5px 11px;
    border: 1px solid var(--line);
    border-radius: 2px;
    font-size: 12px;
  }

  .faq-nav a.is-active {
    padding-left: 11px;
    background: var(--blue-wash);
  }

  .cred-bar {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .portal-grid,
  .post-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cred-bar {
    grid-template-columns: minmax(0, 1fr);
  }

  .cred-item {
    padding: 18px 20px;
  }

  .dl-item {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 12px;
    padding: 18px;
  }

  .dl-meta {
    grid-column: 2;
    grid-auto-flow: column;
    justify-content: start;
    gap: 12px;
  }

  .dl-action {
    grid-column: 2;
    justify-self: start;
  }

  .post-toolbar {
    align-items: flex-start;
  }

  .to-top {
    right: 16px;
    bottom: 16px;
    width: 38px;
    height: 38px;
  }
}

/* 奇数张业务卡时，最后一张跨列收尾，避免右下缺角 */
.biz-card--wide {
  grid-column: 1 / -1;
}

.biz-card--wide .biz-points {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 32px;
}

@media (max-width: 860px) {
  .biz-card--wide .biz-points {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ============================================================
 * 首页站内入口矩阵（.portal）
 * 用于把访客分流到平台能力、合规、洞察、资料等深层页面，
 * 同时为搜索引擎提供首页优先传递的内链结构。
 * ============================================================ */
.portal {
  background: var(--paper-deep);
}

.portal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
}

.portal-card {
  display: grid;
  gap: 7px;
  align-content: start;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--paper-light);
  transition: background 0.28s var(--ease-out);
}

.portal-card:hover {
  background: #fff;
}

.portal-card h3 {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  transition: color 0.25s;
}

.portal-card:hover h3 {
  color: var(--blue-deep);
}

.portal-card p {
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--ink-3);
}

.portal-card small {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  color: var(--blue);
  opacity: 0.85;
}

/* 外链卡片：右上角标记，避免访客误判为站内页 */
.portal-card--external {
  position: relative;
}

.portal-card--external::after {
  content: '↗';
  position: absolute;
  top: 14px;
  right: 16px;
  font-size: 13px;
  color: var(--ink-4);
}

@media (max-width: 1024px) {
  .portal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .portal-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* 深色区块内的编号标签适配（.trust / .contact） */
.trust .section-index span,
.contact .section-index span {
  border-color: rgba(255, 255, 255, 0.3);
}

.contact-index {
  margin-bottom: 14px;
}