.page-faq {
  --faq-hair: 1px solid rgba(22, 23, 26, 0.16);
  --faq-hair-light: 1px solid rgba(244, 241, 234, 0.24);
  --faq-mark: var(--green);
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey);
}

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

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 46px;
  border-bottom: 3px solid var(--ink);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: 0;
  width: 46%;
  height: 10px;
  background: var(--clay);
  transform: skewX(-24deg);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__kicker {
  color: var(--clay);
  letter-spacing: 0.16em;
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(29px, 6.6vw, 58px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 16ch;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: #2c2e33;
}

.page-faq .faq-hero__meta {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--grey);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
  background: #fff;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 8;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */

.page-faq .faq-body {
  padding: 42px 0 56px;
}

.page-faq .faq-body__grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-index {
  border-top: 3px solid var(--ink);
  padding-top: 12px;
}

.page-faq .faq-index__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--grey);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 13px;
  border: 2px solid var(--ink);
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.35;
  text-decoration: none;
  transition: background 0.18s ease, transform 0.18s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--cyan);
}

/* ---------- 问答簇 ---------- */

.page-faq .faq-cluster {
  --faq-mark: var(--green);
  scroll-margin-top: 110px;
}

.page-faq .faq-cluster--clay {
  --faq-mark: var(--clay);
}

.page-faq .faq-cluster + .faq-cluster {
  margin-top: 54px;
  padding-top: 46px;
  border-top: 3px solid var(--ink);
}

.page-faq .faq-cluster__head {
  margin-bottom: 16px;
}

.page-faq .faq-cluster__title {
  margin: 14px 0 8px;
  font-size: clamp(21px, 3.4vw, 30px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-faq .faq-cluster:target .faq-cluster__title {
  color: var(--clay);
}

.page-faq .faq-cluster__desc {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-list {
  border-bottom: var(--faq-hair);
}

.page-faq .faq-item {
  border-top: var(--faq-hair);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 17px 40px 17px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: var(--faq-mark);
  transition: transform 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "\2013";
}

.page-faq .faq-item__mark {
  flex: none;
  padding: 2px 7px;
  background: var(--faq-mark);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.5;
}

.page-faq .faq-item__a {
  padding: 0 0 20px;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: #34363a;
}

.page-faq .faq-item__next {
  padding-left: 14px;
  border-left: 3px solid var(--cyan);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-item__next a {
  color: var(--clay);
  text-decoration: none;
  border-bottom: 2px solid var(--clay);
}

/* ---------- 三步排查 ---------- */

.page-faq .faq-trouble {
  position: relative;
  padding: 50px 0 54px;
  background: var(--ink);
  color: var(--lime);
  overflow: hidden;
}

.page-faq .faq-trouble::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(128deg, rgba(193, 68, 46, 0.34), transparent 58%);
  pointer-events: none;
}

.page-faq .faq-trouble .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-trouble__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-trouble__title {
  margin: 14px 0 10px;
  font-size: clamp(22px, 3.8vw, 34px);
  font-weight: 900;
  line-height: 1.18;
  color: var(--lime);
}

.page-faq .faq-trouble__text {
  margin: 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(244, 241, 234, 0.8);
}

.page-faq .faq-trouble__figure {
  margin: 0;
  border: 3px solid var(--lime);
  box-shadow: 8px 8px 0 var(--clay);
  background: #1d1f23;
}

.page-faq .faq-trouble__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-step {
  padding: 20px;
  border: 2px solid rgba(244, 241, 234, 0.34);
  background: rgba(244, 241, 234, 0.045);
}

.page-faq .faq-step__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-step__title {
  margin: 12px 0 8px;
  font-size: 17.5px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--lime);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 241, 234, 0.82);
}

.page-faq .faq-trouble__foot {
  margin: 24px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.76);
}

.page-faq .faq-trouble__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
}

/* ---------- 现象速查表 ---------- */

.page-faq .faq-symptom {
  padding: 52px 0 56px;
  background: #fbf8f1;
}

.page-faq .faq-symptom__title {
  margin: 14px 0 8px;
  font-size: clamp(21px, 3.4vw, 30px);
  font-weight: 900;
  line-height: 1.2;
}

.page-faq .faq-symptom__desc {
  margin: 0 0 20px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-symptom__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-faq .filter-btn {
  min-height: 44px;
  padding: 9px 15px;
  border: 2px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--cyan);
  font-weight: 700;
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-symptom__scroll {
  width: 100%;
}

.page-faq .symptom-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

.page-faq .symptom-table th {
  padding: 11px 14px;
  background: var(--ink);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-align: left;
}

.page-faq .symptom-table td {
  padding: 14px;
  border-bottom: var(--faq-hair);
  line-height: 1.65;
  vertical-align: top;
}

.page-faq .symptom-table tbody tr:nth-child(even) {
  background: rgba(22, 23, 26, 0.035);
}

.page-faq .symptom-table td:first-child {
  font-weight: 700;
}

.page-faq .symptom-table td:last-child {
  color: var(--green-deep);
}

.page-faq .faq-sym-row[data-hidden="true"] {
  display: none;
}

/* ---------- 查版本前确认 ---------- */

.page-faq .faq-version {
  padding: 52px 0 58px;
  border-top: 3px solid var(--ink);
}

.page-faq .faq-version__title {
  margin: 14px 0 8px;
  font-size: clamp(21px, 3.4vw, 30px);
  font-weight: 900;
  line-height: 1.2;
}

.page-faq .faq-version__desc {
  margin: 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-version__grid {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.page-faq .faq-version__card {
  position: relative;
  padding: 24px 22px;
  border: 3px solid var(--ink);
  background: #fff;
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-version__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--clay);
}

.page-faq .faq-version__card-title {
  margin: 12px 0 8px;
  font-size: 18px;
  font-weight: 800;
}

.page-faq .faq-version__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: #34363a;
}

.page-faq .faq-version__foot {
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-version__foot a {
  color: var(--clay);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--clay);
}

/* ---------- 求助准备 ---------- */

.page-faq .faq-prepare {
  padding: 0 0 72px;
}

.page-faq .faq-prepare__panel {
  position: relative;
  padding: clamp(24px, 4.4vw, 46px);
  background: var(--green-deep);
  color: var(--lime);
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-prepare__panel::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border: 3px solid rgba(43, 217, 192, 0.28);
  transform: rotate(18deg);
  pointer-events: none;
}

.page-faq .faq-prepare__title {
  margin: 14px 0 10px;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 900;
  line-height: 1.18;
  color: var(--lime);
}

.page-faq .faq-prepare__intro {
  margin: 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(244, 241, 234, 0.84);
}

.page-faq .faq-prepare__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-prepare__item {
  padding: 14px 16px;
  border: 2px solid rgba(244, 241, 234, 0.32);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.9);
}

.page-faq .faq-prepare__num {
  display: inline-block;
  margin-right: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
}

.page-faq .faq-prepare__item strong {
  margin-right: 8px;
  color: var(--lime);
  font-weight: 800;
}

.page-faq .faq-prepare__contacts {
  margin-top: 26px;
  border-top: 2px solid rgba(244, 241, 234, 0.3);
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 14px 0;
  border-bottom: var(--faq-hair-light);
}

.page-faq .faq-contact-row__label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(244, 241, 234, 0.7);
}

.page-faq .faq-contact-row__value {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--lime);
  word-break: break-all;
}

.page-faq .copy-chip {
  min-height: 44px;
  margin-left: auto;
  padding: 9px 14px;
  border: 2px solid var(--ink);
  background: var(--orange);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  transition: background 0.18s ease;
}

.page-faq .copy-chip[data-copied="true"] {
  background: var(--whistle);
}

.page-faq .copy-chip[data-copied="true"]::after {
  content: " 已复制";
}

.page-faq .faq-prepare__note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.72);
}

.page-faq .faq-prepare__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
}

/* ---------- 桌面端 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 44px;
  }

  .page-faq .faq-trouble__grid {
    grid-template-columns: 6fr 4fr;
    align-items: center;
    gap: 40px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
  }

  .page-faq .faq-version__grid {
    grid-template-columns: 1fr 1fr;
    gap: 34px;
    align-items: start;
  }

  .page-faq .faq-version__card:nth-child(2) {
    margin-top: 30px;
  }

  .page-faq .faq-prepare__list {
    grid-template-columns: 1fr 1fr;
    gap: 14px 20px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    padding: 52px 0 66px;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 238px minmax(0, 1fr);
    gap: 58px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    border-top: 3px solid var(--ink);
    padding-top: 14px;
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: 2px;
    margin-top: 14px;
  }

  .page-faq .faq-index__link {
    min-height: 0;
    padding: 10px 12px;
    border: 0;
    border-left: 3px solid transparent;
    background: transparent;
    font-size: 14.5px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: rgba(22, 23, 26, 0.05);
    border-left-color: var(--clay);
  }

  .page-faq .faq-item__q {
    font-size: 17px;
  }
}

/* ---------- 窄屏适配 ---------- */

@media (max-width: 719px) {
  .page-faq .symptom-table thead {
    display: none;
  }

  .page-faq .symptom-table,
  .page-faq .symptom-table tbody,
  .page-faq .symptom-table tr,
  .page-faq .symptom-table td {
    display: block;
    width: 100%;
  }

  .page-faq .symptom-table tbody tr {
    margin-bottom: 14px;
    padding: 6px 0;
    border: 2px solid var(--ink);
  }

  .page-faq .symptom-table tbody tr:nth-child(even) {
    background: #fff;
  }

  .page-faq .symptom-table td {
    padding: 9px 14px;
    border-bottom: 0;
  }

  .page-faq .symptom-table td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 3px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    color: var(--grey);
  }

  .page-faq .faq-contact-row__value {
    flex: 1 1 100%;
    order: 3;
  }

  .page-faq .copy-chip {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .filter-btn,
  .page-faq .copy-chip,
  .page-faq .faq-item__q::after {
    transition: none;
  }
}