.page-faq {
  background: var(--c-paper);
  color: var(--c-navy);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-faq [hidden] {
  display: none !important;
}

.page-faq a {
  color: inherit;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--header-h) + 28px) 0 52px;
  background: var(--c-paper);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 62%;
  z-index: -1;
  background: linear-gradient(118deg, rgba(201, 43, 33, 0.12), rgba(255, 138, 42, 0.08) 52%, rgba(63, 107, 79, 0.05) 78%, transparent 88%);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 0 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  top: calc(var(--header-h) + 40px);
  width: 220px;
  height: 220px;
  z-index: -1;
  border: 1px solid rgba(94, 100, 95, 0.22);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

.page-faq .breadcrumbs {
  margin-bottom: 18px;
}

.page-faq .eyebrow {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-clay);
  margin: 0;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 62px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero__hl {
  display: inline-block;
  padding: 0 0.14em 0.04em;
  background: var(--c-lime);
  color: var(--c-navy);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.78;
  color: rgba(11, 31, 58, 0.84);
}

.page-faq .faq-hero__quick {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 10px;
  margin-top: 28px;
}

.page-faq .quick-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 16px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(94, 100, 95, 0.26);
  border-left: 3px solid var(--c-red);
  transition: transform 180ms var(--ease), border-left-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .quick-card:hover,
.page-faq .quick-card:focus-visible {
  transform: translateY(-3px);
  border-left-color: var(--c-lime);
  background: #fff;
}

.page-faq .quick-card__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-red);
}

.page-faq .quick-card__title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .quick-card__meta {
  font-size: 12px;
  line-height: 1.5;
  color: var(--c-rock);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  padding: 14px;
  background: var(--c-navy);
  clip-path: polygon(0 5%, 100% 0, 100% 95%, 0 100%);
}

.page-faq .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-hero__figure .media-frame__img {
  aspect-ratio: 3 / 2;
}

.page-faq .media-frame__caption {
  display: block;
  margin-top: 12px;
  padding: 0 2px 4px;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(246, 241, 231, 0.72);
  font-family: var(--font-serif);
  letter-spacing: 0.02em;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 24px;
  padding-bottom: 72px;
}

.page-faq .faq-index {
  border-top: 2px solid var(--c-navy);
  padding-top: 10px;
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--c-rock);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid rgba(94, 100, 95, 0.32);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.6);
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--c-lime);
  border-color: var(--c-lime);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--c-clay);
}

.page-faq .faq-index__link:hover .faq-index__no {
  color: var(--c-navy);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-filter {
  position: sticky;
  top: var(--header-h);
  z-index: 5;
  padding: 10px 0 14px;
  background: linear-gradient(180deg, var(--c-paper) 74%, rgba(246, 241, 231, 0));
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.page-faq .filter-btn {
  padding: 6px 13px;
  border: 1px solid rgba(11, 31, 58, 0.28);
  background: rgba(255, 255, 255, 0.66);
  color: var(--c-navy);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .filter-btn:hover,
.page-faq .filter-btn:focus-visible {
  border-color: var(--c-orange);
}

.page-faq .filter-btn[aria-pressed="true"],
.page-faq .filter-btn.is-active {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: var(--c-navy);
  font-weight: 700;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding-top: 30px;
  scroll-margin-top: calc(var(--header-h) + 76px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-faq .faq-group__note {
  margin: 10px 0 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-rock);
  max-width: 46em;
}

.page-faq .qa {
  border-top: 1px solid rgba(94, 100, 95, 0.3);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__num {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--c-clay);
}

.page-faq .qa__q {
  flex: 1;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.6;
}

.page-faq .qa summary:hover .qa__q {
  color: var(--c-red);
}

.page-faq .qa__sign {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid rgba(11, 31, 58, 0.4);
  transition: background 180ms var(--ease), border-color 180ms var(--ease), transform 220ms var(--ease);
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--c-navy);
  transform: translate(-50%, -50%);
}

.page-faq .qa__sign::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .qa__sign::after {
  width: 1.5px;
  height: 10px;
  transition: opacity 180ms var(--ease);
}

.page-faq .qa[open] .qa__sign {
  background: var(--c-lime);
  border-color: var(--c-lime);
  transform: rotate(180deg);
}

.page-faq .qa[open] .qa__sign::after {
  opacity: 0;
}

.page-faq .qa[open] summary .qa__q {
  font-weight: 700;
}

.page-faq .qa__a {
  padding: 0 2px 22px 34px;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(11, 31, 58, 0.86);
}

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

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

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

.page-faq .qa-steps {
  counter-reset: qstep;
  margin: 4px 0 12px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .qa-steps li {
  position: relative;
  padding: 10px 12px 10px 46px;
  background: rgba(28, 42, 58, 0.05);
  border-left: 3px solid var(--c-clay);
  font-size: 14.5px;
  line-height: 1.65;
}

.page-faq .qa-steps li::before {
  counter-increment: qstep;
  content: "0" counter(qstep);
  position: absolute;
  left: 12px;
  top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--c-clay);
}

.page-faq .qa-steps strong {
  font-weight: 700;
}

/* ---------- 三步路径 ---------- */
.page-faq .step-flow {
  margin: 18px 0 16px;
  padding: 22px 18px 20px;
  background: var(--c-navy);
  color: var(--c-paper);
  clip-path: polygon(0 0, 100% 0, 100% 97%, 0 100%);
}

.page-faq .step-flow__title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--c-paper);
}

.page-faq .step-flow__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step-card {
  padding: 14px 16px;
  background: var(--c-slate);
  border-top: 2px solid var(--c-lime);
}

.page-faq .step-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--c-lime);
  letter-spacing: 0.06em;
}

.page-faq .step-card__name {
  margin: 6px 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-faq .step-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: rgba(246, 241, 231, 0.78);
}

.page-faq .step-flow__figure {
  margin: 16px 0 0;
  padding: 8px;
  border: 1px solid rgba(246, 241, 231, 0.22);
}

/* ---------- 仍需协助 ---------- */
.page-faq .help-slab {
  background: var(--c-navy);
  color: var(--c-paper);
  padding: 52px 0 60px;
  clip-path: polygon(0 4%, 100% 0, 100% 100%, 0 100%);
}

.page-faq .help-slab__title {
  margin: 14px 0 0;
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--c-paper);
}

.page-faq .help-slab__lead {
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(246, 241, 231, 0.8);
}

.page-faq .help-rows {
  display: grid;
  gap: 2px;
  margin-top: 26px;
  border-top: 1px solid rgba(246, 241, 231, 0.18);
}

.page-faq .contact-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: 13px 2px;
  border-bottom: 1px solid rgba(246, 241, 231, 0.16);
}

.page-faq .contact-key {
  flex: none;
  width: 84px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
}

.page-faq .contact-value {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  font-weight: 500;
  word-break: break-word;
  color: var(--c-paper);
}

.page-faq .copy-btn {
  flex: none;
  padding: 5px 12px;
  border: 1px solid rgba(246, 241, 231, 0.4);
  background: transparent;
  color: var(--c-paper);
  font-family: var(--font-sans);
  font-size: 12.5px;
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  background: var(--c-lime);
  border-color: var(--c-lime);
  color: var(--c-navy);
}

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

.page-faq .help-slab__note {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(246, 241, 231, 0.66);
}

.page-faq .help-slab__note a {
  color: var(--c-lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 40px) 0 64px;
  }

  .page-faq .step-flow {
    padding: 26px 26px 24px;
  }

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

  .page-faq .help-rows {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

  .page-faq .help-slab {
    padding: 64px 0 76px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-faq .faq-hero__figure {
    padding: 18px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 46px;
    padding-bottom: 88px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    margin-top: 14px;
    padding: 0;
  }

  .page-faq .faq-index__list li + li {
    margin-top: 2px;
  }

  .page-faq .faq-index__link {
    display: flex;
    justify-content: flex-start;
    padding: 10px 10px 10px 0;
    border: 0;
    border-bottom: 1px dashed rgba(94, 100, 95, 0.34);
    background: transparent;
    font-size: 14px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: transparent;
    border-bottom-color: var(--c-red);
    color: var(--c-red);
  }

  .page-faq .faq-index__link:hover .faq-index__no {
    color: var(--c-red);
  }

  .page-faq .faq-group__title {
    letter-spacing: 0.02em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .quick-card,
  .page-faq .qa__sign,
  .page-faq .filter-btn,
  .page-faq .copy-btn {
    transition: none;
  }

  .page-faq .quick-card:hover {
    transform: none;
  }
}