.page-faq {
  --faq-radius: 6px;
  overflow-x: clip;
}

.page-faq .ds-container {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: 18px;
  padding-right: 18px;
}

/* ---------- 面包屑 ---------- */
.page-faq .ds-breadcrumb {
  padding: 22px 0 4px;
}

.page-faq .ds-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .ds-breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--copper);
}

.page-faq .ds-breadcrumb a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-faq .ds-breadcrumb a:hover {
  border-bottom-color: var(--copper);
  color: var(--copper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 28px 0 44px;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.page-faq .ds-eyebrow {
  display: inline-block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--copper);
  text-transform: uppercase;
}

.page-faq .ds-eyebrow--block {
  display: block;
  margin-bottom: 8px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.4vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--text);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--card);
  overflow: hidden;
}

.page-faq .faq-hero__facts .ds-fact {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 18px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-hero__facts .ds-fact:first-child {
  border-top: 0;
}

.page-faq .ds-fact__value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--copper);
}

.page-faq .ds-fact__label {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 通用按钮 ---------- */
.page-faq .ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .ds-btn--action {
  background: var(--cinnabar);
  color: #fff;
}

.page-faq .ds-btn--action:hover {
  background: var(--cinnabar-deep);
}

.page-faq .ds-btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}

.page-faq .ds-btn--ghost:hover {
  border-color: var(--copper);
  color: var(--copper);
}

/* ---------- 章节 ---------- */
.page-faq .ds-section {
  padding: 46px 0;
}

.page-faq .ds-section__head {
  max-width: 40em;
}

.page-faq .ds-section__title {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.6vw, 2.2rem);
  line-height: 1.28;
  color: var(--ink);
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-topics {
  scroll-margin-top: 96px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-topics__intro {
  margin: 14px 0 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-media {
  margin: 26px 0 0;
}

.page-faq .ds-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.page-faq .ds-media__caption {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.page-faq .faq-index__card {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "no title"
    "no text"
    "count count";
  gap: 6px 14px;
  padding: 20px 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible {
  border-color: var(--copper);
  box-shadow: 0 8px 20px rgba(30, 58, 52, 0.08);
}

.page-faq .ds-index-card__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1;
  color: var(--copper);
  letter-spacing: 0.02em;
}

.page-faq .ds-index-card__title {
  grid-area: title;
  align-self: center;
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .ds-index-card__text {
  grid-area: text;
  align-self: start;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-index__count {
  grid-area: count;
  justify-self: start;
  margin-top: 10px;
  padding: 3px 11px;
  border-radius: var(--radius-pill);
  background: var(--copper-soft);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 96px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-group__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.page-faq .faq-group__aside {
  padding-left: 16px;
  border-left: 3px solid var(--copper);
}

.page-faq .faq-group__count {
  margin: 12px 0 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--ink);
}

.page-faq .faq-group__desc {
  margin: 0 0 16px;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-group__link {
  padding: 9px 18px;
  font-size: 0.84rem;
}

.page-faq .faq-group__list {
  min-width: 0;
}

.page-faq .faq-group__figure {
  margin: 0 0 22px;
}

/* ---------- 折叠面板 ---------- */
.page-faq .ds-fold {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .ds-fold:first-of-type {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-q__trigger {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding: 18px 2px;
  margin: 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.99rem;
  font-weight: 500;
  line-height: 1.62;
  color: var(--text);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-q__no {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--copper);
}

.page-faq .faq-q__trigger:hover .faq-q__label {
  color: var(--copper);
}

.page-faq .faq-q__trigger:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 2px;
  border-radius: 4px;
}

.page-faq .ds-fold__icon {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  flex: none;
}

.page-faq .ds-fold__icon::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--copper);
  border-bottom: 2px solid var(--copper);
  transform: translate(-50%, -70%) rotate(45deg);
  transition: transform 0.24s var(--ease);
}

.page-faq .faq-q__trigger[aria-expanded="true"] .ds-fold__icon::before {
  transform: translate(-50%, -30%) rotate(-135deg);
}

.page-faq .ds-fold__panel {
  padding: 0 2px 20px 0;
  overflow: hidden;
}

.page-faq .faq-q__panel > p {
  margin: 0 0 10px;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .faq-q__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-q__steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 28px;
  margin-bottom: 9px;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--text);
}

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

.page-faq .faq-q__steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.24em;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--copper);
}

.page-faq .faq-q__panel a {
  color: var(--cinnabar);
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 57, 43, 0.35);
}

.page-faq .faq-q__panel a:hover {
  border-bottom-color: var(--cinnabar);
}

.page-faq .faq-num {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  background: var(--copper-soft);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: 0.84em;
  letter-spacing: 0.02em;
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact {
  scroll-margin-top: 96px;
  padding-bottom: 72px;
}

.page-faq .faq-contact__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 30px 22px;
  background: var(--ink);
  border-radius: var(--radius-sign);
}

.page-faq .faq-contact__panel .ds-eyebrow {
  color: var(--copper-soft);
}

.page-faq .faq-contact__panel .ds-section__title {
  color: var(--paper);
}

.page-faq .faq-contact__lead {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: 0.95rem;
  line-height: 1.9;
  color: rgba(247, 242, 231, 0.82);
}

.page-faq .faq-contact__list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 12px;
  padding: 13px 0;
  border-top: 1px solid rgba(247, 242, 231, 0.16);
}

.page-faq .faq-contact__key {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--copper-soft);
}

.page-faq .faq-contact__val {
  min-width: 0;
  font-size: 0.96rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-copy {
  flex: none;
  padding: 5px 13px;
  background: transparent;
  border: 1px solid rgba(226, 185, 140, 0.45);
  border-radius: var(--radius-pill);
  color: var(--copper-soft);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-copy:hover {
  background: rgba(226, 185, 140, 0.14);
  border-color: var(--copper-soft);
}

.page-faq .faq-copy:focus-visible {
  outline: 2px solid var(--copper-soft);
  outline-offset: 2px;
}

.page-faq .faq-copy[data-copied] {
  background: var(--copper-soft);
  color: var(--ink-deep);
  border-color: var(--copper-soft);
}

.page-faq .faq-contact__btn {
  margin-top: 24px;
}

.page-faq .faq-contact__aside .ds-note {
  display: block;
  margin: 0;
  padding: 16px 18px;
  background: var(--note);
  border-radius: var(--radius-card);
  font-size: 0.86rem;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .ds-container {
    padding-left: 30px;
    padding-right: 30px;
  }

  .page-faq .faq-hero {
    padding: 40px 0 56px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 44px;
  }

  .page-faq .faq-hero__facts {
    margin-top: 8px;
  }

  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .ds-section {
    padding: 58px 0;
  }

  .page-faq .faq-group__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
    gap: 44px;
  }

  .page-faq .faq-group__aside {
    position: sticky;
    top: 108px;
  }

  .page-faq .ds-fold__panel {
    padding-right: 48px;
  }

  .page-faq .faq-contact__panel {
    padding: 40px 34px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-group__grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
    gap: 60px;
  }

  .page-faq .faq-group__list {
    max-width: 70ch;
  }

  .page-faq .faq-contact__panel {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 48px;
    padding: 48px 46px;
    align-items: start;
  }

  .page-faq .faq-contact__aside {
    padding-top: 6px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .ds-fold__icon::before,
  .page-faq .faq-index__card,
  .page-faq .ds-btn,
  .page-faq .faq-copy {
    transition: none;
  }
}