.page-faq {
  --faq-cut: 14px;
  --faq-gap: clamp(0.9rem, 2.2vw, 1.5rem);
  background: var(--ink);
  color: var(--paper);
}

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

/* ---------- 右侧问题索引刻度 ---------- */
.page-faq .faq-rail {
  display: none;
}

@media (min-width: 1560px) {
  .page-faq .faq-rail {
    display: block;
    position: fixed;
    top: 50%;
    right: calc((100vw - 1400px) / 4);
    transform: translateY(-50%);
    z-index: 4;
    padding-left: 0.9rem;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-rail__list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.85rem;
  }

  .page-faq .faq-rail__link {
    display: flex;
    align-items: baseline;
    gap: 0.45rem;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.1em;
    color: var(--index);
    text-decoration: none;
    transition: color 0.18s var(--ease);
  }

  .page-faq .faq-rail__num {
    color: var(--accent);
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    color: var(--paper);
  }
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(1.1rem, 3vw, 2rem) clamp(2.4rem, 6vw, 4.6rem);
  background:
    repeating-linear-gradient(115deg, rgba(255, 255, 255, 0.022) 0 1px, transparent 1px 11px),
    var(--ink);
}

@media (min-width: 900px) {
  .page-faq .faq-hero::before {
    content: "";
    position: absolute;
    z-index: -1;
    top: -16%;
    right: -13%;
    width: 41vw;
    height: 134%;
    background: linear-gradient(205deg, var(--accent) 0%, #c2451a 82%);
    clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
    opacity: 0.9;
  }
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  grid-template-columns: minmax(0, 1fr);
  align-items: end;
}

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

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

.page-faq .faq-hero__eyebrow {
  margin: 1.3rem 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 21em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.95rem, 7.2vw, 3.6rem);
  line-height: 1.03;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 1.15rem 0 0;
  max-width: 34em;
  font-size: clamp(0.94rem, 2.1vw, 1.02rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.page-faq .faq-hero__media {
  margin: 0;
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--ink-deep);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__media {
    aspect-ratio: 3 / 4;
  }
}

/* ---------- 章节通用 ---------- */
.page-faq .section {
  padding-block: clamp(2.4rem, 6vw, 4.6rem);
}

.page-faq .section + .section {
  border-top: 1px solid var(--line);
}

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

.page-faq .section__note {
  max-width: 36em;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .chapter-mark {
  color: var(--accent);
}

/* ---------- 01 设备与问题 ---------- */
.page-faq .faq-picker__block {
  margin-top: clamp(1.5rem, 3.4vw, 2.4rem);
}

.page-faq .faq-picker__label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--index);
}

.page-faq .faq-devices {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.55rem;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-devices > .tag {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
}

.page-faq .faq-picker__hint {
  margin: 0.55rem 0 0;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--index);
}

.page-faq .faq-problems {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 720px) {
  .page-faq .faq-problems {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-problem:nth-child(even) {
    margin-top: 2.4rem;
  }
}

.page-faq .faq-problem {
  position: relative;
  display: block;
  padding: 1.05rem 2.4rem 1.1rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 2px solid var(--index);
  color: var(--paper);
  text-decoration: none;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-problem::after {
  content: "";
  position: absolute;
  top: 1.5rem;
  right: 1.2rem;
  width: 0.5rem;
  height: 0.5rem;
  border-top: 2px solid var(--index);
  border-right: 2px solid var(--index);
  transform: rotate(45deg);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-problem:hover,
.page-faq .faq-problem:focus-visible {
  border-left-color: var(--accent);
  background: var(--line);
  transform: translateX(2px);
}

.page-faq .faq-problem:hover::after,
.page-faq .faq-problem:focus-visible::after {
  border-color: var(--accent);
  transform: translateX(2px) rotate(45deg);
}

.page-faq .faq-problem__title {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-problem__meta {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--index);
}

/* ---------- 02 步骤卡片 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 0.6rem;
  margin-top: clamp(1.3rem, 3vw, 2.1rem);
}

.page-faq .step-card {
  background: var(--surface);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  transition: background-color 0.18s var(--ease);
}

.page-faq .step-card__head {
  margin: 0;
  font-size: 1rem;
  font-weight: 400;
}

.page-faq .step-card__trigger {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) 1rem;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  padding: 1rem 1.15rem;
  background: transparent;
  border: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.18s var(--ease);
}

.page-faq .step-card__trigger:hover {
  background: var(--line);
}

.page-faq .step-card__trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -3px;
}

.page-faq .step-card__num {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--accent);
}

.page-faq .step-card__label {
  font-size: 0.98rem;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .step-card__icon {
  display: inline-block;
  width: 0.58rem;
  height: 0.58rem;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 0.18s var(--ease);
}

.page-faq .step-card__trigger[aria-expanded="true"] .step-card__icon {
  transform: rotate(-135deg);
}

.page-faq .step-card__panel {
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--line);
}

.page-faq .step-card__steps {
  counter-reset: faqstep;
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 1rem 0 0;
  list-style: none;
}

.page-faq .step-card__steps > li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 2.05rem;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .step-card__steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  top: 0.24em;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--accent);
}

/* ---------- 03 按机型 ---------- */
.page-faq .faq-device-groups {
  display: grid;
  gap: var(--faq-gap);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(1.3rem, 3vw, 2.1rem);
}

@media (min-width: 720px) {
  .page-faq .faq-device-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-device-groups {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .device-card {
  padding: 1.1rem 1.2rem 1.3rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 2px solid var(--card-yellow);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  scroll-margin-top: 5.5rem;
}

.page-faq .device-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .device-card .step-card__steps {
  padding-top: 0.85rem;
}

/* ---------- 04 标签顺序 ---------- */
.page-faq .order-blocks {
  display: grid;
  gap: var(--faq-gap);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(1.3rem, 3vw, 2.1rem);
}

@media (min-width: 880px) {
  .page-faq .order-blocks {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-faq .order-block:nth-child(2) {
    margin-top: 3rem;
  }
}

.page-faq .order-block {
  padding: 1.2rem 1.3rem 1.4rem;
  background: var(--ink-deep);
  border: 1px solid var(--line);
}

.page-faq .order-block:first-child {
  border-left: 3px solid var(--card-yellow);
}

.page-faq .order-block:last-child {
  border-left: 3px solid var(--accent);
}

.page-faq .order-block__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .order-block .step-card__steps {
  padding-top: 0;
}

/* ---------- 05 旧赛季资料 ---------- */
.page-faq .archive-split {
  display: grid;
  gap: var(--faq-gap);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  margin-top: clamp(1.3rem, 3vw, 2.1rem);
}

@media (min-width: 880px) {
  .page-faq .archive-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

.page-faq .archive-split__media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
  background: var(--ink-deep);
}

.page-faq .archive-split__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.92);
}

.page-faq .archive-split__body {
  padding: clamp(1rem, 2.6vw, 1.5rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-left: 2px solid var(--accent);
}

.page-faq .archive-steps {
  padding-top: 0;
}

.page-faq .archive-split__note {
  margin: 1.1rem 0 1.2rem;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line);
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 06 人工帮助 ---------- */
.page-faq .human-grid {
  display: grid;
  gap: var(--faq-gap);
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(1.3rem, 3vw, 2.1rem);
}

@media (min-width: 880px) {
  .page-faq .human-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }
}

.page-faq .human-brief {
  padding: 1.2rem 1.3rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .human-brief__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .human-brief__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.page-faq .human-brief__list > li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .human-brief__list > li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 0.62rem;
  height: 2px;
  background: var(--accent);
}

.page-faq .human-grid .contact-list {
  margin: 0;
  padding: 1.2rem 1.3rem;
  background: var(--ink-deep);
  border: 1px solid var(--line);
}

.page-faq .human-grid .contact-list__row {
  display: grid;
  gap: 0.3rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .human-grid .contact-list__row:last-child {
  border-bottom: 0;
}

.page-faq .human-grid .contact-list__term {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--index);
}

.page-faq .human-grid .contact-list__desc {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-faq .faq-human__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 480px) {
  .page-faq .faq-hero__actions .btn,
  .page-faq .faq-human__actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .page-faq .step-card__trigger {
    grid-template-columns: 2rem minmax(0, 1fr) 0.9rem;
    padding: 0.95rem 1rem;
  }

  .page-faq .step-card__num {
    font-size: 1.1rem;
  }

  .page-faq .step-card__panel {
    padding: 0 1rem 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-problem,
  .page-faq .faq-problem::after,
  .page-faq .step-card__icon,
  .page-faq .step-card__trigger,
  .page-faq .faq-rail__link {
    transition: none;
  }
}