/* ===== 看台知识库 /knowledge/ ===== */
.page-faq {
  background: var(--hk-cream);
  color: var(--hk-ink);
}

.page-faq .faq-crumbs {
  padding-top: 18px;
  padding-bottom: 14px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 46px 0 0;
  background: var(--hk-night);
  color: var(--hk-cream);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, transparent 0 92px, rgba(255, 255, 255, .05) 92px 94px),
    linear-gradient(126deg, var(--hk-plateau) 0%, rgba(11, 31, 51, .38) 46%, rgba(11, 31, 51, 0) 62%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__eyebrow {
  display: inline-block;
  padding-left: 10px;
  border-left: 3px solid var(--hk-red);
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-12);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--hk-lime);
}

.page-faq .faq-hero__title {
  margin: 18px 0 0;
  max-width: 18ch;
  font-family: var(--hk-font-head);
  font-weight: 800;
  font-size: var(--hk-fs-76);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--hk-cream);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: var(--hk-fs-18);
  line-height: 1.72;
  color: var(--hk-cream-soft);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 34px;
  background: var(--hk-glass-line);
  border: 1px solid var(--hk-glass-line);
}

.page-faq .faq-stat {
  padding: 14px 16px;
  background: rgba(11, 31, 51, .72);
}

.page-faq .faq-stat__num {
  display: block;
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-24);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--hk-lime);
}

.page-faq .faq-stat__label {
  display: block;
  margin-top: 5px;
  font-size: var(--hk-fs-12);
  letter-spacing: .06em;
  color: var(--hk-steel);
}

.page-faq .faq-hero__band {
  position: relative;
  margin-top: 40px;
  aspect-ratio: 16 / 8;
  overflow: hidden;
  background: var(--hk-plateau);
}

.page-faq .faq-hero__band img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-faq .faq-hero__band::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: linear-gradient(90deg,
    var(--hk-red) 0 33.4%,
    var(--hk-amber) 33.4% 66.7%,
    var(--hk-lime) 66.7% 100%);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding: 52px 0 68px;
  background: var(--hk-cream);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

/* ---------- 刻度式目录 ---------- */
.page-faq .faq-toc {
  border-top: 3px solid var(--hk-ink);
  padding-top: 14px;
}

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-12);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--hk-ink-soft);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-toc__num {
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-12);
  font-weight: 700;
  color: var(--hk-amber);
}

.page-faq .faq-toc__link {
  color: var(--hk-ink);
  text-decoration: none;
}

/* 窄屏：横向刻度条 */
@media (max-width: 979px) {
  .page-faq .faq-toc__list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .page-faq .faq-toc__link {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border: 1px solid var(--hk-ink-line);
    border-radius: 999px;
    background: rgba(255, 255, 255, .62);
    font-size: var(--hk-fs-12);
    white-space: nowrap;
  }
}

/* 宽屏：吸顶刻度目录 */
@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-toc__link {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 10px;
    align-items: baseline;
    padding: 11px 0;
    border-bottom: 1px solid var(--hk-ink-line);
    font-size: var(--hk-fs-14);
    line-height: 1.45;
    transition: color .2s var(--hk-ease), padding-left .2s var(--hk-ease);
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    color: var(--hk-red);
    padding-left: 5px;
  }

  .page-faq .faq-toc__link:focus-visible {
    outline: 2px solid var(--hk-red);
    outline-offset: 2px;
  }
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 58px;
  padding-top: 8px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--hk-ink);
}

.page-faq .faq-group__num {
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-18);
  font-weight: 700;
  line-height: 1;
  color: var(--hk-red);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--hk-font-head);
  font-size: var(--hk-fs-34);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--hk-ink);
}

.page-faq .faq-group__intro {
  margin: 14px 0 0;
  max-width: 64ch;
  font-size: var(--hk-fs-14);
  line-height: 1.72;
  color: var(--hk-ink-soft);
}

.page-faq .faq-group__list {
  margin-top: 18px;
}

/* ---------- 手风琴问答 ---------- */
.page-faq .faq-item {
  display: block;
  margin-bottom: 8px;
  background: #FFFFFF;
  border: 1px solid var(--hk-ink-line);
  border-left: 3px solid var(--hk-stand);
  transition: border-color .22s var(--hk-ease), box-shadow .22s var(--hk-ease);
}

.page-faq .faq-item:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item[open] {
  border-left-color: var(--hk-red);
  box-shadow: 0 14px 30px -22px rgba(11, 31, 51, .85);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 18px;
  gap: 12px;
  align-items: center;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q:focus-visible {
  outline: 3px solid var(--hk-lime);
  outline-offset: -3px;
}

.page-faq .faq-item__idx {
  display: inline-grid;
  place-items: center;
  min-width: 28px;
  height: 22px;
  padding: 0 6px;
  background: var(--hk-ink);
  color: var(--hk-cream);
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-12);
  font-weight: 700;
  letter-spacing: .04em;
  transition: background .2s var(--hk-ease);
}

.page-faq .faq-item[open] .faq-item__idx {
  background: var(--hk-red);
}

.page-faq .faq-item__title {
  font-family: var(--hk-font-head);
  font-size: var(--hk-fs-18);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--hk-ink);
  transition: color .2s var(--hk-ease);
}

.page-faq .faq-item__q:hover .faq-item__title {
  color: var(--hk-red);
}

.page-faq .faq-item__mark {
  position: relative;
  justify-self: end;
  width: 16px;
  height: 16px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--hk-red);
  transition: transform .24s var(--hk-ease), opacity .24s var(--hk-ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  margin: 0 16px 16px;
  padding: 14px 0 0;
  border-top: 1px solid var(--hk-ink-line);
  font-size: var(--hk-fs-14);
  line-height: 1.78;
  color: var(--hk-ink-soft);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a a {
  color: var(--hk-red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-steps {
  margin: 10px 0 12px;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
  display: grid;
  gap: 7px;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-12);
  font-weight: 700;
  color: var(--hk-red);
}

/* ---------- 索引配图 ---------- */
.page-faq .faq-index-visual {
  margin: 20px 0 4px;
  padding: 10px;
  background: #FFFFFF;
  border: 1px solid var(--hk-ink-line);
}

.page-faq .faq-index-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-faq .faq-index-visual__cap {
  margin: 10px 0 0;
  font-size: var(--hk-fs-12);
  line-height: 1.6;
  color: var(--hk-ink-soft);
}

/* ---------- 底部人工协助 ---------- */
.page-faq .faq-help {
  position: relative;
  overflow: hidden;
  padding: 60px 0 68px;
  background: var(--hk-night);
  color: var(--hk-cream);
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -6%;
  width: 58%;
  height: 170%;
  transform: rotate(-9deg);
  pointer-events: none;
  background: linear-gradient(150deg, rgba(20, 64, 111, .95), rgba(11, 31, 51, 0) 72%);
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--hk-lime) 0 25%,
    var(--hk-amber) 25% 50%,
    var(--hk-red) 50% 75%,
    var(--hk-plateau) 75% 100%);
}

.page-faq .faq-help__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-faq .faq-help__eyebrow {
  display: inline-block;
  padding-left: 10px;
  border-left: 3px solid var(--hk-red);
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-12);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--hk-lime);
}

.page-faq .faq-help__title {
  margin: 16px 0 14px;
  font-family: var(--hk-font-head);
  font-size: var(--hk-fs-34);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--hk-cream);
}

.page-faq .faq-help__lead {
  margin: 0 0 24px;
  max-width: 52ch;
  font-size: var(--hk-fs-14);
  line-height: 1.78;
  color: var(--hk-cream-soft);
}

.page-faq .faq-help .hk-btn--primary {
  background: var(--hk-red);
  border-color: var(--hk-red);
  color: var(--hk-cream);
}

.page-faq .faq-help .hk-contact-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-help .hk-contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 5px 14px;
  align-items: center;
  padding: 14px 16px;
  background: var(--hk-glass);
  border: 1px solid var(--hk-glass-line);
  border-radius: var(--hk-radius);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-faq .faq-help .hk-contact-item__key {
  grid-column: 1;
  font-size: var(--hk-fs-12);
  letter-spacing: .12em;
  color: var(--hk-steel);
}

.page-faq .faq-help .hk-contact-item__val {
  grid-column: 1;
  font-family: var(--hk-font-data);
  font-size: var(--hk-fs-14);
  color: var(--hk-cream);
  overflow-wrap: anywhere;
}

.page-faq .faq-help .faq-contact-item--plain .hk-contact-item__key,
.page-faq .faq-help .faq-contact-item--plain .hk-contact-item__val {
  grid-column: 1 / -1;
}

.page-faq .faq-help .hk-copy {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
  padding: 7px 12px;
  border: 0;
  border-radius: var(--hk-radius);
  background: var(--hk-lime);
  color: var(--hk-night);
  font-family: var(--hk-font-body);
  font-size: var(--hk-fs-12);
  font-weight: 700;
  cursor: pointer;
  transition: transform .18s var(--hk-ease), background .18s var(--hk-ease), color .18s var(--hk-ease);
}

.page-faq .faq-help .hk-copy:hover {
  transform: translateY(-2px);
}

.page-faq .faq-help .hk-copy:focus-visible {
  outline: 3px solid var(--hk-cream);
  outline-offset: 2px;
}

.page-faq .faq-help .hk-copy[data-copied] {
  background: var(--hk-red);
  color: var(--hk-cream);
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .faq-group--split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 296px;
    column-gap: 36px;
    align-items: start;
  }

  .page-faq .faq-group--split .faq-group__head,
  .page-faq .faq-group--split .faq-group__intro {
    grid-column: 1 / -1;
  }

  .page-faq .faq-group--split .faq-index-visual {
    grid-column: 2;
    grid-row: 3;
    position: sticky;
    top: 96px;
    margin-top: 18px;
  }

  .page-faq .faq-group--split .faq-group__list {
    grid-column: 1;
    grid-row: 3;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 60px;
  }

  .page-faq .faq-hero__band {
    aspect-ratio: 16 / 6;
    margin-top: 48px;
  }

  .page-faq .faq-body {
    padding: 76px 0 96px;
  }

  .page-faq .faq-help {
    padding: 78px 0 88px;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 430px);
    gap: 64px;
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-stats {
    max-width: 900px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item__idx,
  .page-faq .faq-item__title,
  .page-faq .faq-toc__link,
  .page-faq .faq-help .hk-copy {
    transition: none;
  }
}