.page-faq {
  --faq-cut: 16px;
  --faq-line: rgba(11, 26, 43, 0.10);
  --faq-dark-line: rgba(232, 237, 244, 0.16);
  background: var(--paper);
  color: var(--ink-900);
  overflow-x: hidden;
}

.page-faq .section {
  padding: clamp(40px, 6vw, 76px) 0;
}

.page-faq .section-title {
  margin: 6px 0 14px;
  letter-spacing: -0.02em;
}

.page-faq .lede {
  max-width: 66ch;
  color: var(--ink-700);
  line-height: 1.75;
}

.page-faq .faq-link {
  color: var(--celadon-700);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(78, 156, 138, 0.45);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-link:hover {
  color: var(--orange-500);
  border-color: var(--orange-500);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4vw, 48px) 0 clamp(28px, 4vw, 46px);
  background:
    radial-gradient(120% 95% at 88% 2%, rgba(242, 115, 63, 0.20), transparent 58%),
    radial-gradient(95% 80% at 4% 96%, rgba(78, 156, 138, 0.16), transparent 62%),
    linear-gradient(180deg, #FBF9F6 0%, var(--paper) 100%);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  max-width: 22ch;
  margin: 8px 0 18px;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero .lede {
  font-size: clamp(15px, 1.6vw, 18px);
  max-width: 68ch;
}

.page-faq .faq-filters {
  margin-top: clamp(22px, 3vw, 34px);
}

/* ---------- 筛选按钮 ---------- */
.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .filter-btn {
  appearance: none;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  padding: 10px 17px;
  color: var(--ink-700);
  background: #FFFFFF;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease);
}

.page-faq .filter-btn:hover {
  transform: translateY(-2px);
  border-color: var(--orange-500);
  color: var(--ink-900);
}

.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--orange-500);
  border-color: var(--orange-500);
  color: var(--ink-900);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .accordion-item {
  position: relative;
  background: #FFFFFF;
  border: 1px solid var(--faq-line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  transition: background 180ms var(--ease);
}

.page-faq .accordion-item[open] {
  background: linear-gradient(180deg, #FFFFFF 0%, #FDF8F4 100%);
}

.page-faq .accordion-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 0;
  background: var(--orange-500);
  transition: width 180ms var(--ease);
}

.page-faq .accordion-item[open]::before {
  width: 3px;
}

.page-faq .accordion-trigger {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 18px 54px 18px 20px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.55;
}

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

.page-faq .accordion-trigger::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--orange-500);
  transition: transform 180ms var(--ease);
}

.page-faq .accordion-item[open] .accordion-trigger::after {
  content: "\2212";
}

.page-faq .accordion-panel {
  padding: 0 20px 20px;
  color: var(--ink-700);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .accordion-panel p {
  max-width: 72ch;
  margin: 0 0 8px;
}

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

/* ---------- 材料准备 ---------- */
.page-faq .prep-layout {
  align-items: start;
  row-gap: 32px;
}

.page-faq .prep-intro .lede {
  margin-bottom: 22px;
}

.page-faq .prep-figure {
  margin: 0;
}

.page-faq .prep-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-faq .prep-card {
  background: #FFFFFF;
  border: 1px solid var(--faq-line);
  padding: 22px 20px 24px;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .prep-num {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--orange-500);
}

.page-faq .prep-card h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-faq .prep-card p {
  margin: 0;
  color: var(--ink-700);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-faq .note-strip {
  margin-top: 16px;
  padding: 18px 20px;
  background: var(--orange-100);
  border-left: 3px solid var(--orange-500);
  color: var(--ink-700);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .note-strip p {
  margin: 0;
  max-width: 72ch;
}

.page-faq .note-strip strong {
  color: var(--ink-900);
}

/* ---------- 深色技术区 ---------- */
.page-faq .faq-dark {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, var(--ink-900) 0%, var(--ink-700) 80%);
  color: var(--paper);
}

.page-faq .faq-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232, 237, 244, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 237, 244, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
}

.page-faq .dark-block {
  position: relative;
  z-index: 1;
  padding: clamp(34px, 5vw, 60px) 0;
}

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

.page-faq .section-head-dark .eyebrow {
  color: var(--amber);
}

.page-faq .section-head-dark .section-title {
  color: #FFFFFF;
}

.page-faq .section-head-dark .lede {
  color: rgba(232, 237, 244, 0.78);
}

.page-faq .domain-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  margin-top: 26px;
}

.page-faq .domain-card {
  padding: 18px 18px 20px;
  background: rgba(232, 237, 244, 0.05);
  border: 1px solid var(--faq-dark-line);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.page-faq .domain-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: #FFFFFF;
}

.page-faq .domain-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(232, 237, 244, 0.72);
}

.page-faq .ver-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .ver-chip {
  display: inline-block;
  padding: 6px 13px;
  font-size: 13px;
  border-radius: 6px;
  color: #CFE9E1;
  background: rgba(78, 156, 138, 0.18);
  border: 1px solid rgba(78, 156, 138, 0.45);
}

.page-faq .faq-doc-figure {
  margin: 26px 0 0;
}

.page-faq .media-frame {
  overflow: hidden;
  border-radius: 4px;
}

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

/* ---------- 参数表 ---------- */
.page-faq .ver-filters {
  margin: 24px 0 18px;
}

.page-faq .faq-dark .filter-btn {
  background: transparent;
  color: var(--ink-100);
  border-color: var(--faq-dark-line);
}

.page-faq .faq-dark .filter-btn:hover {
  color: #FFFFFF;
  border-color: var(--orange-500);
}

.page-faq .faq-dark .filter-btn[aria-pressed="true"] {
  background: var(--orange-500);
  border-color: var(--orange-500);
  color: var(--ink-900);
}

.page-faq .table-scroll {
  overflow-x: auto;
  border: 1px solid var(--faq-dark-line);
}

.page-faq .params-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .params-caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px;
  font-size: 12px;
  font-weight: 600;
  color: rgba(232, 237, 244, 0.62);
}

.page-faq .params-table th {
  text-align: left;
  padding: 12px 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: #CFE9E1;
  background: rgba(78, 156, 138, 0.12);
  border-bottom: 1px solid rgba(78, 156, 138, 0.5);
  white-space: nowrap;
}

.page-faq .params-table td {
  padding: 13px 14px;
  color: rgba(232, 237, 244, 0.86);
  border-bottom: 1px solid var(--faq-dark-line);
  vertical-align: top;
  line-height: 1.6;
}

.page-faq .params-table tbody tr {
  transition: background 180ms var(--ease);
}

.page-faq .params-table tbody tr:hover {
  background: rgba(242, 115, 63, 0.12);
}

.page-faq .params-table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq .params-table .mono {
  font-size: 13px;
  color: #FFCDA5;
}

.page-faq .dark-note {
  margin: 16px 0 0;
  max-width: 78ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(232, 237, 244, 0.66);
}

/* ---------- 账户 ---------- */
.page-faq .acct-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin-top: 26px;
}

.page-faq .acct-card {
  padding: 22px 20px 24px;
  background: #FFFFFF;
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--ink-700);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .acct-card--channel {
  border-top-color: var(--orange-500);
}

.page-faq .acct-card--project {
  border-top-color: var(--celadon-500);
}

.page-faq .acct-card h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-faq .acct-card > p {
  margin: 0 0 14px;
  color: var(--ink-700);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .acct-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .acct-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-500);
}

.page-faq .acct-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--celadon-500);
  transform: rotate(45deg);
}

.page-faq .account-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  align-items: center;
  justify-content: space-between;
  margin-top: 26px;
  padding: 20px 22px;
  background: var(--ink-100);
}

.page-faq .account-foot p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-700);
}

/* ---------- 批量支持 ---------- */
.page-faq .bulk-band {
  padding: clamp(26px, 4vw, 46px);
  background: linear-gradient(120deg, var(--orange-100) 0%, #FFF6EF 55%, rgba(78, 156, 138, 0.12) 100%);
  border-left: 4px solid var(--orange-500);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-faq .bulk-copy .lede {
  color: var(--ink-700);
}

.page-faq .bulk-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
}

.page-faq .bulk-list li {
  padding: 8px 15px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-900);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(11, 26, 43, 0.08);
  border-radius: 999px;
}

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

/* ---------- 报修流程 ---------- */
.page-faq .step-flow {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

.page-faq .step-flow li {
  position: relative;
  padding-left: 44px;
  min-width: 0;
}

.page-faq .step-dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--orange-500);
  box-shadow: 0 0 0 6px rgba(242, 115, 63, 0.18);
}

.page-faq .step-flow li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 12px;
  top: 32px;
  bottom: -20px;
  width: 1px;
  background: linear-gradient(180deg, var(--orange-500), rgba(78, 156, 138, 0.55));
}

.page-faq .step-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-faq .step-text {
  margin: 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-700);
}

.page-faq .flow-figure {
  margin: 32px 0 0;
}

.page-faq .flow-foot {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .flow-foot > p {
  margin: 0;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-700);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .domain-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-faq .prep-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-faq .acct-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-faq .step-flow {
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
  }
  .page-faq .step-flow::before {
    content: "";
    position: absolute;
    left: 13px;
    right: calc(20% - 13px);
    top: 13px;
    height: 1px;
    background: linear-gradient(90deg, var(--orange-500), var(--celadon-500));
  }
  .page-faq .step-flow {
    position: relative;
  }
  .page-faq .step-flow li {
    padding-left: 0;
    padding-top: 46px;
  }
  .page-faq .step-dot {
    left: 0;
    top: 0;
  }
  .page-faq .step-flow li:not(:last-child)::after {
    display: none;
  }
  .page-faq .step-text {
    max-width: 28ch;
  }
}

@media (min-width: 1000px) {
  .page-faq .domain-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-faq .acct-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-faq .prep-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1180px) {
  .page-faq .prep-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 560px) {
  .page-faq .accordion-trigger {
    font-size: 16px;
    padding-right: 48px;
  }
  .page-faq .bulk-band {
    padding: 24px 18px;
    clip-path: none;
  }
  .page-faq .account-foot {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-faq .faq-cta .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .filter-btn,
  .page-faq .accordion-item,
  .page-faq .accordion-item::before,
  .page-faq .accordion-trigger::after,
  .page-faq .params-table tbody tr {
    transition: none;
  }
  .page-faq .filter-btn:hover {
    transform: none;
  }
}