.page-faq {
  --faq-gap: clamp(20px, 3vw, 36px);
  --faq-radius: 2px;
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .breadcrumbs {
  padding-top: clamp(16px, 3vw, 28px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-faq .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover {
  color: var(--orange-soft);
}

.page-faq .breadcrumbs__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-head {
  display: grid;
  gap: var(--faq-gap);
  padding: clamp(24px, 4vw, 44px) 0 clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-head__title h1 {
  margin: 12px 0 0;
  font-size: clamp(32px, 7.2vw, 62px);
  line-height: 1.02;
  letter-spacing: -.03em;
  font-weight: 900;
  color: var(--paper);
}

.page-faq .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-head__lead {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

/* ---------- 主体骨架 ---------- */
.page-faq .guide-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-top: clamp(24px, 4vw, 48px);
}

.page-faq .guide-rail {
  position: relative;
}

.page-faq .guide-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .guide-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-faq .guide-rail__list li {
  flex: 0 0 auto;
}

.page-faq .guide-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink-2);
  color: var(--paper);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .guide-rail__list a:hover,
.page-faq .guide-rail__list a:focus-visible {
  border-color: var(--orange);
  transform: translateY(-2px);
}

.page-faq .guide-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
}

.page-faq .guide-rail__jump {
  display: none;
}

/* ---------- 章节 ---------- */
.page-faq .guide-main {
  display: grid;
  gap: clamp(40px, 6vw, 76px);
  min-width: 0;
}

.page-faq .faq-section {
  min-width: 0;
  scroll-margin-top: 24px;
}

.page-faq .faq-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: -.02em;
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-size: clamp(21px, 3.4vw, 34px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-section__lead {
  max-width: 60ch;
  margin: 16px 0 clamp(20px, 3vw, 30px);
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 路径 SVG ---------- */
.page-faq .path-svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 96px;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 10px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink-3);
}

/* ---------- 两列 ---------- */
.page-faq .split-2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

/* ---------- 步骤卡 ---------- */
.page-faq .step-list,
.page-faq .step-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step-card {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 2px solid var(--jade);
  border-radius: var(--faq-radius);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .03);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .step-card:hover {
  transform: translateY(-2px);
  border-color: var(--orange);
  border-left-color: var(--jade);
}

.page-faq .step-card--flat {
  border-left-color: var(--orange);
  background: var(--ink-3);
}

.page-faq .step-card__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  letter-spacing: -.02em;
}

.page-faq .step-card h3 {
  margin: 10px 0 8px;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .step-card p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .step-card .tag {
  margin-top: 2px;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure .media__frame {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--ink-3);
}

.page-faq .faq-figure--panel .media__frame {
  aspect-ratio: 3 / 2;
  border-color: rgba(244, 240, 230, .16);
}

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

.page-faq .media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--mist);
}

/* ---------- 提示条 ---------- */
.page-faq .tip-strip {
  margin-top: 20px;
  padding: 18px;
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
}

.page-faq .tip-strip__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--jade);
}

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

.page-faq .tip-strip__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .tip-strip__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 2px;
  background: var(--orange);
}

/* ---------- 反馈色块 ---------- */
.page-faq .faq-section--panel {
  background: var(--jade-deep);
  border-radius: var(--faq-radius);
  padding: clamp(20px, 3vw, 36px);
  border-top: 0;
}

.page-faq .faq-section--panel .faq-section__head {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-section__head--light h2 {
  color: var(--white);
}

.page-faq .faq-section__num--jade {
  color: var(--jade);
}

.page-faq .faq-section--panel .faq-section__lead {
  color: rgba(255, 255, 255, .84);
}

.page-faq .split-2--panel {
  align-items: start;
}

/* ---------- 勾选清单 ---------- */
.page-faq .check-wrap {
  min-width: 0;
}

.page-faq .check-list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
  border-top: 1px solid rgba(244, 240, 230, .18);
}

.page-faq .check-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 4px;
  border-bottom: 1px solid rgba(244, 240, 230, .18);
  cursor: pointer;
}

.page-faq .check-row__input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.page-faq .check-row__box {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 1px solid var(--jade);
  border-radius: 1px;
  background: transparent;
  position: relative;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .check-row__box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(42deg) scale(0);
  transform-origin: center;
  transition: transform var(--dur) var(--ease);
}

.page-faq .check-row__input:checked + .check-row__box {
  background: var(--jade);
  border-color: var(--jade);
}

.page-faq .check-row__input:checked + .check-row__box::after {
  transform: rotate(42deg) scale(1);
}

.page-faq .check-row__input:focus-visible + .check-row__box {
  outline: 2px solid var(--orange-soft);
  outline-offset: 2px;
}

.page-faq .check-row__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--white);
}

.page-faq .check-row__text strong {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--jade);
}

.page-faq .check-row__input:checked ~ .check-row__text {
  color: rgba(255, 255, 255, .62);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

/* ---------- 模板 ---------- */
.page-faq .tpl {
  padding: 16px;
  border: 1px dashed rgba(244, 240, 230, .38);
  border-radius: var(--faq-radius);
  background: rgba(5, 18, 29, .28);
}

.page-faq .tpl__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--orange-soft);
}

.page-faq .tpl__line {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .88);
  word-break: break-word;
}

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

.page-faq .feedback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  border-top: 1px solid var(--line);
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa-item__q {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 16px 30px 16px 2px;
  cursor: pointer;
  list-style: none;
  position: relative;
  font-size: 15px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa-item__q::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
}

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

.page-faq .qa-item__q:hover {
  color: var(--orange-soft);
}

.page-faq .qa-item__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orange);
  padding-top: 3px;
}

.page-faq .qa-item__a {
  padding: 0 2px 18px 32px;
  border-top: 1px solid var(--line);
  animation: faq-fade var(--dur) var(--ease);
}

.page-faq .qa-item__a p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

@keyframes faq-fade {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 联系 ---------- */
.page-faq .faq-help {
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-2);
  border: 1px solid var(--orange);
  border-radius: var(--faq-radius);
}

.page-faq .faq-help h2 {
  margin: 10px 0 12px;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-help > p {
  max-width: 58ch;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-help__contact {
  display: grid;
  gap: 1px;
  margin: 0 0 20px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  overflow: hidden;
}

.page-faq .faq-help__row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding: 12px 14px;
  background: var(--ink-3);
}

.page-faq .faq-help__row dt {
  flex: 0 0 80px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--jade);
  padding-top: 3px;
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 平板以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-head {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
  }

  .page-faq .split-2 {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-faq .split-2--panel {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  }

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

  .page-faq .step-list {
    gap: 12px;
  }

  .page-faq .faq-help__row {
    flex-wrap: nowrap;
    align-items: baseline;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-faq .guide-shell {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(28px, 3.5vw, 56px);
    align-items: start;
  }

  .page-faq .guide-rail {
    position: sticky;
    top: 88px;
  }

  .page-faq .guide-rail__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-faq .guide-rail__list a {
    width: 100%;
    border-color: transparent;
    background: transparent;
    padding: 7px 8px;
    font-size: 13.5px;
    color: var(--mist);
  }

  .page-faq .guide-rail__list a:hover,
  .page-faq .guide-rail__list a:focus-visible {
    background: var(--ink-2);
    border-color: var(--line);
    color: var(--paper);
    transform: translateX(2px);
  }

  .page-faq .guide-rail__jump {
    display: inline-flex;
    margin-top: 16px;
    width: 100%;
    justify-content: center;
  }

  .page-faq .step-list {
    gap: 14px;
  }

  .page-faq .step-card {
    padding: 22px 22px 20px;
  }

  .page-faq .step-card:nth-child(2) {
    margin-left: 12px;
  }

  .page-faq .step-card:nth-child(3) {
    margin-left: 24px;
  }

  .page-faq .qa-item__q {
    font-size: 16px;
    padding-right: 40px;
  }

  .page-faq .qa-item__a {
    padding-left: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-card,
  .page-faq .guide-rail__list a,
  .page-faq .check-row__box,
  .page-faq .qa-item__a {
    transition: none;
    animation: none;
  }

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