.page-faq {
  --faq-cut: 12px;
  --faq-pad: clamp(18px, 2.6vw, 28px);
  position: relative;
  padding-bottom: clamp(64px, 9vw, 120px);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: 22px 0 0;
}
.page-faq .breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-faq .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 4vw, 48px) 0 clamp(36px, 5vw, 68px);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: min(700px, 100vw);
  height: min(700px, 100vw);
  background: radial-gradient(circle, rgba(55, 226, 213, 0.14), transparent 66%);
  pointer-events: none;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(240px, 46vw);
  height: 2px;
  background: linear-gradient(90deg, var(--orange), transparent);
}
.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
}
.page-faq .faq-hero__kick {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 0;
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.06em;
}
.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(46px, 12vw, 100px);
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--paper);
  margin: 0.16em 0 0.3em;
}
.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 46ch;
  color: rgba(233, 240, 247, 0.86);
  font-size: 16.5px;
  line-height: 1.85;
}
.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-hero__figure {
  position: relative;
  border-left: 1px solid var(--line-soft);
  padding-left: clamp(0px, 2vw, 22px);
}
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-height: 380px;
  height: auto;
  object-fit: cover;
  object-position: center top;
  border-radius: 0 var(--faq-cut) 0 var(--faq-cut);
}

/* ---------- 三件小事 ---------- */
.page-faq .faq-brief {
  padding: clamp(8px, 2vw, 20px) 0 clamp(36px, 5vw, 64px);
}
.page-faq .faq-brief__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-faq .faq-brief__item {
  position: relative;
  background: linear-gradient(158deg, var(--ink-800), rgba(16, 42, 69, 0.5));
  padding: var(--faq-pad);
}
.page-faq .faq-brief__item h3 {
  margin: 14px 0 10px;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}
.page-faq .faq-brief__item p {
  margin: 0;
  color: rgba(233, 240, 247, 0.8);
  font-size: 15px;
  line-height: 1.85;
}
.page-faq .faq-brief__num {
  display: block;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  color: var(--cyan);
  font-size: 12.5px;
  letter-spacing: 0.1em;
}

/* ---------- 检索 ---------- */
.page-faq .faq-search {
  padding: clamp(20px, 3vw, 36px) 0 clamp(36px, 5vw, 64px);
}
.page-faq .faq-filter {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
  padding: 6px 16px 6px 18px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.page-faq .faq-filter:focus-within {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(55, 226, 213, 0.16);
}
.page-faq .faq-filter__icon {
  display: flex;
  flex: 0 0 auto;
  color: var(--cyan);
}
.page-faq .faq-filter .filter-input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 12px 2px;
  background: transparent;
  border: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
}
.page-faq .faq-filter .filter-input::placeholder {
  color: var(--muted);
}
.page-faq .faq-filter .filter-input:focus {
  outline: none;
}
.page-faq .faq-filter .filter-count {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.page-faq .filter-empty {
  margin: 16px 0 0;
  padding: 14px 18px;
  border-left: 2px solid var(--orange);
  background: rgba(255, 138, 61, 0.08);
  color: var(--amber);
  font-size: 15px;
  line-height: 1.8;
}
.page-faq .filter-empty a {
  color: var(--cyan);
}
.page-faq .faq-search__figure {
  margin: clamp(24px, 3vw, 36px) 0 0;
}
.page-faq .faq-search__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-radius: 0 var(--faq-cut) 0 var(--faq-cut);
}

/* ---------- 条目主体 ---------- */
.page-faq .faq-body {
  padding: clamp(12px, 2vw, 24px) 0 0;
}
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
}
.page-faq .faq-index__title {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-left: 2px solid var(--line);
  color: var(--paper);
  font-size: 15px;
  text-decoration: none;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-faq .faq-index__link .mono {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.page-faq .faq-index__n {
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
}
.page-faq .faq-index__link:hover {
  background: var(--ink-800);
  border-left-color: var(--cyan);
}
.page-faq .faq-index__link[aria-current="true"] {
  background: rgba(255, 138, 61, 0.1);
  border-left-color: var(--orange);
  color: var(--amber);
}
.page-faq .faq-index__link[aria-current="true"] .mono {
  color: var(--amber);
}
.page-faq .faq-index__tip {
  margin: 16px 0 14px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}
.page-faq .faq-index__cta {
  display: inline-block;
}

.page-faq .faq-group {
  scroll-margin-top: 108px;
  margin-bottom: clamp(26px, 3vw, 40px);
}
.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 20px;
  font-weight: 600;
  color: var(--paper);
}
.page-faq .faq-group__title .mono {
  color: var(--cyan);
  font-size: 12.5px;
  letter-spacing: 0.1em;
}

.page-faq .faq-item {
  margin-bottom: 10px;
  background: var(--ink-800);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--faq-cut) 0 var(--faq-cut);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.page-faq .faq-item:hover {
  border-left-color: var(--cyan-soft);
}
.page-faq .faq-item[hidden] {
  display: none;
}
.page-faq .faq-item .acc-trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px 18px;
  background: transparent;
  border: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}
.page-faq .faq-item .acc-trigger:hover {
  background: var(--ink-700);
}
.page-faq .faq-item .acc-trigger:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}
.page-faq .faq-item .acc-trigger__i {
  flex: 0 0 auto;
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.06em;
}
.page-faq .faq-item__q {
  flex: 1 1 auto;
}
.page-faq .faq-item .acc-trigger__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}
.page-faq .faq-item .acc-trigger__sign::before,
.page-faq .faq-item .acc-trigger__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.page-faq .faq-item .acc-trigger__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}
.page-faq .faq-item .acc-trigger__sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}
.page-faq .faq-item .acc-trigger[aria-expanded="true"] .acc-trigger__sign::after {
  transform: scaleY(0);
}
.page-faq .faq-item .acc-panel__inner {
  padding: 2px 18px 16px;
}
.page-faq .faq-item .acc-panel__inner p {
  margin: 0 0 14px;
  color: rgba(233, 240, 247, 0.88);
  font-size: 15.5px;
  line-height: 1.85;
}
.page-faq .faq-item .acc-panel__inner a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid rgba(55, 226, 213, 0.35);
}
.page-faq .faq-item .acc-panel__inner a:hover {
  border-bottom-color: var(--cyan);
}
.page-faq .faq-item__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}
.page-faq .faq-item__id {
  color: var(--muted);
  font-size: 11.5px;
  letter-spacing: 0.1em;
}
.page-faq .faq-item .copy-btn {
  padding: 6px 13px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--cyan);
  font-family: var(--font-body);
  font-size: 12px;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-faq .faq-item .copy-btn:hover {
  border-color: var(--cyan);
  background: rgba(55, 226, 213, 0.1);
}
.page-faq .faq-item .copy-btn[data-copied] {
  border-color: var(--green);
  color: var(--green);
}

/* ---------- 兜底联系 ---------- */
.page-faq .faq-help {
  padding: clamp(32px, 5vw, 64px) 0 0;
}
.page-faq .faq-help__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  padding: var(--faq-pad);
  background: linear-gradient(140deg, var(--ink-800), rgba(23, 57, 91, 0.55));
  border: 1px solid var(--line);
}
.page-faq .faq-help__text h2 {
  margin: 0.25em 0 0.6em;
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 600;
  line-height: 1.35;
  color: var(--paper);
}
.page-faq .faq-help__text p {
  margin: 0;
  max-width: 52ch;
  color: rgba(233, 240, 247, 0.84);
  font-size: 15.5px;
  line-height: 1.85;
}
.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}
.page-faq .faq-help__label {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.page-faq .faq-help__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-help__links a {
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--paper);
  font-size: 14.5px;
  line-height: 1.6;
  text-decoration: none;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.page-faq .faq-help__links a:hover {
  color: var(--cyan);
  padding-left: 6px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-filter {
    flex-wrap: wrap;
    border-radius: 0 var(--faq-cut) 0 var(--faq-cut);
    padding: 10px 14px;
  }
  .page-faq .faq-filter .filter-input {
    flex: 1 1 100%;
    order: 2;
    padding: 6px 2px 10px;
  }
  .page-faq .faq-filter__icon {
    order: 1;
  }
  .page-faq .faq-filter .filter-count {
    order: 3;
    width: 100%;
    padding-top: 8px;
    border-top: 1px solid var(--line-soft);
  }
  .page-faq .faq-item .acc-trigger {
    gap: 10px;
    padding: 14px 14px;
    font-size: 15.5px;
  }
  .page-faq .faq-item .acc-panel__inner {
    padding: 2px 14px 14px;
  }
  .page-faq .faq-hero__figure img {
    max-height: 260px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-brief__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-brief__item:nth-child(2) {
    transform: translateY(20px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.85fr);
  }
  .page-faq .faq-hero__figure img {
    max-height: 440px;
  }
  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 264px minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.01ms !important;
  }
  .page-faq .faq-brief__item:nth-child(2) {
    transform: none;
  }
}