.page-faq {
  --faq-rail-w: 232px;
  --faq-gold-line: rgba(201, 150, 43, .3);
  --faq-wine-line: rgba(90, 18, 32, .12);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: clamp(14px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 42px) 0 clamp(38px, 7vw, 82px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -20%;
  width: min(640px, 76vw);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(circle at 48% 46%,
    rgba(201, 150, 43, .36),
    rgba(226, 118, 43, .14) 52%,
    rgba(201, 150, 43, 0) 72%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(26px, 5vw, 48px);
}

.page-faq .faq-hero__copy .display--xl {
  margin: 14px 0 18px;
  line-height: 1.06;
  color: var(--wine-deep);
  letter-spacing: .02em;
}

.page-faq .faq-hero__copy .lede {
  max-width: 48ch;
  color: var(--ink);
}

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

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(150deg, var(--wine), var(--black));
  box-shadow: var(--shadow-float);
}

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

.page-faq .faq-hero__caption {
  padding: 12px 18px 16px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gold-light);
}

@media (min-width: 980px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    align-items: center;
  }
}

/* ---------- 三步流程 ---------- */
.page-faq .faq-flow {
  padding-block: clamp(36px, 6vw, 76px);
}

.page-faq .faq-flow__inner {
  display: grid;
  gap: 30px;
}

.page-faq .faq-flow__rail {
  padding: 20px 20px 18px;
  border-radius: var(--radius-md);
  background: rgba(90, 18, 32, .05);
  border: 1px solid var(--faq-wine-line);
}

.page-faq .flow-rail {
  position: relative;
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 0 20px;
  display: grid;
  gap: 6px;
}

.page-faq .flow-rail::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(201, 150, 43, .12));
}

.page-faq .flow-rail__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
}

.page-faq .flow-rail__link::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 50%;
  width: 10px;
  height: 10px;
  margin-top: -7px;
  border-radius: 50%;
  background: var(--cream);
  border: 2px solid var(--gold);
  box-sizing: content-box;
  transition: background var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .flow-rail__link:hover {
  background: rgba(201, 150, 43, .14);
}

.page-faq .flow-rail__link[aria-current="true"] {
  background: var(--wine);
  color: var(--cream);
}

.page-faq .flow-rail__link[aria-current="true"]::before {
  background: var(--jade-bright);
  border-color: var(--jade-bright);
}

.page-faq .flow-rail__num {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .flow-rail__link[aria-current="true"] .flow-rail__num {
  color: var(--gold-light);
}

.page-faq .flow-rail__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
  opacity: .72;
}

@media (min-width: 1020px) {
  .page-faq .faq-flow__inner {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-flow__rail {
    position: sticky;
    top: 104px;
  }
}

.page-faq .faq-flow__body > .display--lg {
  margin-bottom: 12px;
  color: var(--wine-deep);
}

.page-faq .faq-flow__lede {
  max-width: 64ch;
  margin: 0 0 26px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 步骤卡片 ---------- */
.page-faq .step {
  position: relative;
  overflow: hidden;
  margin-top: 18px;
  padding: clamp(24px, 4vw, 38px);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg,
    rgba(255, 255, 255, .94) 0%,
    rgba(246, 241, 230, .8) 58%,
    rgba(201, 150, 43, .14) 100%);
  border: 1px solid var(--faq-gold-line);
  box-shadow: var(--shadow-card);
  transition: transform var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.page-faq .step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-float);
}

.page-faq .step__num {
  position: absolute;
  top: -20px;
  right: 8px;
  font-family: var(--font-mono);
  font-size: clamp(88px, 15vw, 158px);
  line-height: 1;
  color: rgba(201, 150, 43, .18);
  pointer-events: none;
  user-select: none;
}

.page-faq .step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.page-faq .step__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--wine);
}

.page-faq .step__time {
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  background: var(--gold);
  color: var(--black);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .step__text {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .step__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .step__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .step__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--gold);
}

.page-faq .step__flag {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 20px 0 0;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--jade);
  background: rgba(15, 107, 84, .1);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .step__flag .status-dot {
  margin-top: .62em;
  flex: none;
}

.page-faq .step__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding-bottom: 2px;
  font-size: 15px;
  font-weight: 600;
  color: var(--wine-mid);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 32, 54, .35);
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-faq .step__link::after {
  content: "→";
}

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

/* ---------- 检索横带 ---------- */
.page-faq .faq-search {
  overflow: hidden;
}

.page-faq .faq-search h2,
.page-faq .faq-search p,
.page-faq .faq-search li {
  color: var(--cream);
}

.page-faq .faq-search .eyebrow {
  color: var(--gold-light);
}

.page-faq .faq-search__inner {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  padding-block: clamp(24px, 4vw, 44px);
}

.page-faq .faq-search__copy p {
  margin: 0 0 14px;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.85;
}

.page-faq .faq-search__figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(201, 150, 43, .38);
  box-shadow: var(--shadow-float);
}

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

@media (min-width: 900px) {
  .page-faq .faq-search__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
    align-items: center;
  }
}

.page-faq .faq-search__dims {
  display: grid;
  gap: 16px;
  padding-bottom: clamp(20px, 4vw, 34px);
}

@media (min-width: 820px) {
  .page-faq .faq-search__dims {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

.page-faq .dim {
  padding: 18px 20px 20px;
  border-radius: var(--radius-md);
  background: rgba(246, 241, 230, .08);
  border: 1px solid rgba(201, 150, 43, .34);
}

.page-faq .dim__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold-light);
}

.page-faq .chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .chip {
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  line-height: 1.2;
  background: rgba(246, 241, 230, .1);
  border: 1px solid rgba(201, 150, 43, .42);
  color: var(--cream);
}

.page-faq .chip--on {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--black);
  font-weight: 600;
}

.page-faq .chip--alt {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--black);
  font-weight: 600;
}

.page-faq .faq-search__example {
  margin-bottom: clamp(24px, 5vw, 48px);
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: rgba(18, 14, 12, .34);
  border: 1px dashed rgba(201, 150, 43, .5);
}

.page-faq .retrieval-example__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .retrieval-example__path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 14px 0 10px;
}

.page-faq .retrieval-example__path strong {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--gold);
}

.page-faq .retrieval-example__arrow {
  color: var(--gold-light);
}

.page-faq .retrieval-example__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(246, 241, 230, .86);
}

/* ---------- 设备差异 ---------- */
.page-faq .faq-devices {
  padding-block: clamp(42px, 7vw, 86px);
}

.page-faq .device-grid {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

@media (min-width: 820px) {
  .page-faq .device-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

.page-faq .device-card {
  padding: clamp(22px, 3vw, 34px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-gold-line);
  box-shadow: var(--shadow-card);
}

.page-faq .device-card--mobile {
  background: linear-gradient(165deg, rgba(15, 107, 84, .18), rgba(246, 241, 230, .88) 62%);
}

.page-faq .device-card--desktop {
  background: linear-gradient(165deg, rgba(90, 18, 32, .16), rgba(246, 241, 230, .88) 62%);
}

.page-faq .device-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.page-faq .device-card__title {
  margin: 0;
  flex: 1 1 200px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 25px);
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--wine-deep);
}

.page-faq .device-card__specs {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .device-card__specs div {
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(90, 18, 32, .1);
}

.page-faq .device-card__specs div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .device-card__specs dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--clay);
  margin-bottom: 5px;
}

.page-faq .device-card__specs dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .device-note {
  max-width: 70ch;
  margin: 24px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--gold);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 旧版迁移 ---------- */
.page-faq .faq-migrate {
  padding-block: clamp(36px, 6vw, 74px);
}

.page-faq .faq-migrate__inner {
  display: grid;
  gap: 28px;
}

@media (min-width: 900px) {
  .page-faq .faq-migrate__inner {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    gap: 52px;
    align-items: start;
  }
}

.page-faq .faq-migrate__copy .display--md {
  margin: 14px 0 16px;
  color: var(--wine-deep);
}

.page-faq .faq-migrate__copy p {
  margin: 0 0 14px;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .migrate-map {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .migrate-map li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: rgba(166, 90, 60, .12);
  border-left: 3px solid var(--clay);
  font-size: 15px;
}

.page-faq .migrate-map__old {
  color: var(--ink);
  opacity: .68;
  text-decoration: line-through;
}

.page-faq .migrate-map__arrow {
  color: var(--gold);
  font-size: 16px;
}

.page-faq .migrate-map__new {
  color: var(--wine);
  font-weight: 600;
}

/* ---------- 常见疑问 ---------- */
.page-faq .faq-qa {
  padding-block: clamp(42px, 7vw, 86px);
}

.page-faq .qa-grid {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

@media (min-width: 900px) {
  .page-faq .qa-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 28px;
    align-items: start;
  }

  .page-faq .qa-grid > .qa:nth-child(even) {
    margin-top: 26px;
  }
}

.page-faq .qa {
  border-radius: var(--radius-md);
  background: rgba(246, 241, 230, .9);
  border: 1px solid var(--faq-wine-line);
  overflow: hidden;
  transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(201, 150, 43, .62);
  box-shadow: var(--shadow-card);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--wine);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--gold);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
  color: var(--jade);
}

.page-faq .qa__q:focus-visible {
  outline: 3px solid var(--jade-bright);
  outline-offset: -3px;
}

.page-faq .qa__idx {
  flex: none;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--clay);
}

.page-faq .qa__a {
  padding: 0 18px 18px 44px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
}

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

/* ---------- 反馈收尾 ---------- */
.page-faq .faq-help {
  padding-block: clamp(30px, 5vw, 62px) clamp(50px, 8vw, 98px);
}

.page-faq .help-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 28px;
  padding: clamp(26px, 4vw, 48px);
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, var(--wine-deep) 0%, var(--wine) 46%, var(--wine-mid) 100%);
  box-shadow: var(--shadow-float);
}

.page-faq .help-card::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 150, 43, .4), rgba(201, 150, 43, 0) 70%);
  pointer-events: none;
}

@media (min-width: 880px) {
  .page-faq .help-card {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .85fr);
    align-items: center;
    gap: 44px;
  }
}

.page-faq .help-card .eyebrow {
  color: var(--gold-light);
}

.page-faq .help-card h2 {
  margin: 12px 0 16px;
  color: var(--cream);
}

.page-faq .help-card__copy p {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(246, 241, 230, .9);
}

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

.page-faq .help-card__contact {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 22px 24px;
  border-radius: var(--radius-md);
  background: rgba(18, 14, 12, .32);
  border: 1px solid rgba(201, 150, 43, .36);
}

.page-faq .help-card__contact dt {
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold-light);
}

.page-faq .help-card__contact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream);
  word-break: break-word;
}

/* ---------- 无障碍与动效降级 ---------- */
.page-faq .flow-rail__link:focus-visible,
.page-faq .step__link:focus-visible,
.page-faq .btn:focus-visible {
  outline: 3px solid var(--jade-bright);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step,
  .page-faq .flow-rail__link,
  .page-faq .flow-rail__link::before,
  .page-faq .qa,
  .page-faq .step__link {
    transition: none;
  }

  .page-faq .step:hover {
    transform: none;
  }
}

@media (max-width: 560px) {
  .page-faq .step__num {
    font-size: 78px;
    top: -12px;
    right: 6px;
  }

  .page-faq .qa__a {
    padding-left: 20px;
  }

  .page-faq .migrate-map li {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-faq .migrate-map__arrow {
    display: none;
  }
}