.page-faq {
  --kb-line: 2px;
  --kb-line-strong: 3px;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq img {
  max-width: 100%;
}

/* ---------- 首屏 ---------- */

.page-faq .kb-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
  padding: clamp(22px, 5vw, 48px) 0 clamp(40px, 8vw, 96px);
  border-bottom: var(--kb-line-strong) solid var(--steel);
}

.page-faq .kb-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 70% at 92% 8%, rgba(255, 90, 31, .3), transparent 62%),
    radial-gradient(52% 60% at 4% 96%, rgba(25, 211, 230, .16), transparent 58%);
  pointer-events: none;
}

.page-faq .kb-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: center;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(18px, 3vw, 28px);
  font-size: .8125rem;
  letter-spacing: .02em;
  color: var(--warm);
}

.page-faq .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .breadcrumb span[aria-current="page"] {
  color: var(--warm);
}

.page-faq .kb-title {
  margin: 0 0 clamp(14px, 2.4vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.75rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.035em;
  color: var(--white);
}

.page-faq .kb-title em {
  font-style: normal;
  color: var(--flame);
}

.page-faq .kb-lede {
  margin: 0 0 clamp(22px, 4vw, 34px);
  max-width: 46ch;
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.8;
  color: #d8dde2;
}

.page-faq .kb-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .kb-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--kb-line-strong) solid var(--steel);
  box-shadow: var(--shadow-flame);
}

/* ---------- 索引带 ---------- */

.page-faq .kb-index {
  background: var(--coal);
  border-bottom: var(--kb-line-strong) solid var(--steel);
}

.page-faq .kb-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-faq .kb-index-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 100%;
  padding: 16px clamp(12px, 2.2vw, 20px);
  text-decoration: none;
  color: var(--white);
  border-bottom: var(--kb-line) solid var(--steel);
  border-right: var(--kb-line) solid var(--steel);
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .kb-index-link:hover,
.page-faq .kb-index-link:focus-visible {
  background: var(--ember);
  color: var(--white);
  outline: none;
}

.page-faq .kb-index-num {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .12em;
  color: var(--cyan);
  transition: color .18s var(--ease);
}

.page-faq .kb-index-link:hover .kb-index-num,
.page-faq .kb-index-link:focus-visible .kb-index-num {
  color: var(--warn);
}

.page-faq .kb-index-name {
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.4;
}

/* ---------- 分区骨架 ---------- */

.page-faq .kb-body {
  background: var(--white);
}

.page-faq .kb-group {
  padding: clamp(40px, 8vw, 96px) 0;
}

.page-faq .kb-group + .kb-group {
  border-top: var(--kb-line-strong) solid var(--steel);
}

.page-faq .kb-group--dark {
  background: var(--coal);
  color: var(--white);
  border-top-color: var(--ink);
}

.page-faq .kb-group--dark + .kb-group {
  border-top-color: var(--ink);
}

.page-faq .kb-group-head {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 3vw, 28px);
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-faq .kb-num {
  flex: 0 0 auto;
  padding-top: .08em;
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--flame);
}

.page-faq .kb-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3.6vw, 2.125rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
}

.page-faq .kb-group-sub {
  margin: 8px 0 0;
  max-width: 52ch;
  font-size: .9375rem;
  color: var(--warm-ink);
}

.page-faq .kb-group--dark .kb-group-sub {
  color: var(--warm);
}

/* ---------- 问答组 ---------- */

.page-faq .accordion {
  border-top: var(--kb-line-strong) solid var(--ink);
}

.page-faq .kb-group--dark .accordion {
  border-top-color: var(--steel);
}

.page-faq .accordion-item {
  border-bottom: var(--kb-line) solid rgba(42, 47, 54, .38);
}

.page-faq .kb-group--dark .accordion-item {
  border-bottom-color: var(--steel);
}

.page-faq .accordion-trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin: 0;
  padding: clamp(16px, 2.6vw, 24px) 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.1vw, 1.1875rem);
  font-weight: 700;
  line-height: 1.5;
  color: inherit;
  cursor: pointer;
  transition: color .18s var(--ease);
}

.page-faq .accordion-trigger::after {
  content: "";
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  margin-top: .42em;
  border-right: 3px solid var(--cyan);
  border-bottom: 3px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .24s var(--ease), border-color .18s var(--ease);
}

.page-faq .accordion-trigger[aria-expanded="true"]::after {
  transform: rotate(-135deg);
  border-color: var(--flame);
}

.page-faq .accordion-trigger:hover,
.page-faq .accordion-trigger:focus-visible {
  color: var(--flame);
  outline: none;
}

.page-faq .kb-group--dark .accordion-trigger:hover,
.page-faq .kb-group--dark .accordion-trigger:focus-visible {
  color: var(--cyan);
}

.page-faq .accordion-panel-inner {
  max-width: 68ch;
  padding: 0 0 clamp(18px, 3vw, 28px);
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--warm-ink);
}

.page-faq .kb-group--dark .accordion-panel-inner {
  color: var(--warm);
}

.page-faq .accordion-panel-inner p {
  margin: 0 0 10px;
}

.page-faq .accordion-panel-inner p:last-child {
  margin-bottom: 0;
}

.page-faq .accordion-panel-inner a {
  color: var(--ember);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .kb-group--dark .accordion-panel-inner a {
  color: var(--cyan);
}

/* ---------- 比赛日节奏带 ---------- */

.page-faq .kb-timeline {
  display: grid;
  margin: 0 0 clamp(26px, 4vw, 42px);
  border: var(--kb-line-strong) solid var(--steel);
  background: var(--ink);
}

.page-faq .kb-node {
  padding: clamp(18px, 3vw, 26px);
  border-bottom: var(--kb-line) solid var(--steel);
}

.page-faq .kb-node:last-child {
  border-bottom: 0;
}

.page-faq .kb-node-time {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .kb-node-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .kb-node-text {
  margin: 0;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--warm);
}

/* ---------- 配图 ---------- */

.page-faq .kb-figure {
  margin: 0 0 clamp(26px, 4vw, 42px);
  max-width: 620px;
}

.page-faq .kb-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--kb-line-strong) solid var(--steel);
  box-shadow: var(--shadow-cyan);
}

.page-faq .kb-figure figcaption {
  margin-top: 12px;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--warm);
}

/* ---------- 联系信息条 ---------- */

.page-faq .kb-contact {
  display: grid;
  gap: 0;
  margin: clamp(4px, 1vw, 8px) 0 clamp(26px, 4vw, 40px);
  border: var(--kb-line-strong) solid var(--ink);
  background: var(--coal);
  color: var(--white);
}

.page-faq .kb-contact-item {
  padding: clamp(16px, 2.6vw, 22px);
  border-bottom: var(--kb-line) solid var(--steel);
}

.page-faq .kb-contact-item:last-child {
  border-bottom: 0;
}

.page-faq .kb-contact-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--warm);
}

.page-faq .kb-contact-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.4vw, 1.2rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--cyan);
  word-break: break-word;
}

.page-faq .kb-group-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 36px);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .kb-index-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .kb-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .kb-node {
    border-bottom: 0;
    border-right: var(--kb-line) solid var(--steel);
  }

  .page-faq .kb-node:last-child {
    border-right: 0;
  }

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

  .page-faq .kb-contact-item {
    border-bottom: 0;
    border-right: var(--kb-line) solid var(--steel);
  }

  .page-faq .kb-contact-item:last-child {
    border-right: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .kb-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .kb-index-list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-faq .kb-index-link {
    border-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion-trigger,
  .page-faq .accordion-trigger::after,
  .page-faq .kb-index-link,
  .page-faq .kb-index-num,
  .page-faq .breadcrumb a {
    transition: none;
  }
}