.page-faq {
  --faq-cut-s: 14px;
  --faq-cut-m: 20px;
  --faq-cut-l: 26px;
  --faq-paper-mute: #56607A;
  --faq-paper-line: #D3D8E0;
  --faq-soft: #C7D0E0;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  margin-top: clamp(1.25rem, 3vw, 2.25rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(1.5rem, 3.5vw, 2.5rem) 0 clamp(2rem, 4.5vw, 3.5rem);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -8%;
  width: min(72%, 640px);
  height: 124%;
  background: linear-gradient(155deg, var(--turf) 0%, var(--turf-deep) 100%);
  clip-path: polygon(48% 0, 100% 0, 100% 100%, 0 100%);
  opacity: .17;
  pointer-events: none;
  z-index: -1;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 .9rem;
  font-family: var(--font-num);
  font-size: var(--step-1);
  letter-spacing: .12em;
  color: var(--turf);
}

.page-faq .faq-hero__title {
  margin: 0 0 1.1rem;
  max-width: 17em;
  font-size: clamp(1.85rem, 4.6vw, 3.2rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--on-ink);
}

.page-faq .faq-hero__lead {
  max-width: 33em;
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem 2rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__fact {
  display: flex;
  align-items: baseline;
  gap: .4rem;
  padding-left: .8rem;
  border-left: 2px solid var(--track);
  font-size: var(--step-2);
  color: var(--mute);
}

.page-faq .faq-hero__fact .num {
  font-family: var(--font-num);
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--on-ink);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 1.75rem;
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.page-faq .faq-layout > * {
  min-width: 0;
}

/* ---------- 左栏索引 ---------- */
.page-faq .faq-index {
  border-top: 2px solid var(--turf);
  padding-top: .9rem;
}

.page-faq .faq-index__head {
  margin: 0 0 .7rem;
  font-size: var(--step-1);
  letter-spacing: .1em;
  color: var(--mute);
}

.page-faq .faq-index__list {
  display: grid;
  gap: .4rem;
  margin: 0;
  padding: 0 0 .2rem;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding: .5rem .7rem;
  background: var(--ink-2);
  color: var(--on-ink);
  font-size: var(--step-2);
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  transition: background .15s var(--ease), color .15s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--turf-deep);
  color: var(--on-ink);
}

.page-faq .faq-index__num {
  font-family: var(--font-num);
  font-size: var(--step-1);
  color: var(--turf);
  letter-spacing: .04em;
}

.page-faq .faq-index__link:hover .faq-index__num,
.page-faq .faq-index__link:focus-visible .faq-index__num {
  color: var(--lime);
}

.page-faq .faq-index__foot {
  margin: 1rem 0 0;
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--mute);
}

.page-faq .faq-index__foot a {
  color: var(--turf);
}

/* ---------- 内容块通用 ---------- */
.page-faq .faq-block {
  padding: clamp(1.75rem, 4vw, 2.75rem) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-block__head {
  margin-bottom: 1.35rem;
}

.page-faq .faq-block__num {
  display: block;
  margin-bottom: .3rem;
  font-family: var(--font-num);
  font-size: var(--step-2);
  letter-spacing: .1em;
  color: var(--turf);
  transform: skewX(-6deg);
  transform-origin: left bottom;
}

.page-faq .faq-block__title {
  margin: 0 0 .5rem;
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--on-ink);
}

.page-faq .faq-block__note {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--mute);
}

.page-faq .faq-block p {
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-block__tail {
  margin: 1.35rem 0 0;
  padding-left: .85rem;
  border-left: 2px solid var(--line);
  font-size: var(--step-2);
  line-height: 1.75;
  color: var(--mute);
}

.page-faq .faq-block a {
  color: var(--turf);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-block a:hover,
.page-faq .faq-block a:focus-visible {
  color: var(--lime);
}

/* ---------- 01 三步排查 ---------- */
.page-faq .triage {
  display: grid;
  gap: .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .triage__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .9rem;
  padding: 1.15rem 1.15rem 1.15rem 1rem;
  background: var(--ink-2);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-m)) 0, 100% var(--faq-cut-m), 100% 100%, var(--faq-cut-m) 100%, 0 calc(100% - var(--faq-cut-m)));
}

.page-faq .triage__num {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  background: var(--turf);
  color: var(--ink);
  font-family: var(--font-num);
  font-size: var(--step-4);
  font-weight: 700;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.page-faq .triage__title {
  margin: 0 0 .45rem;
  font-size: var(--step-4);
  line-height: 1.4;
  font-weight: 700;
  color: var(--on-ink);
}

.page-faq .triage__body p {
  margin: 0 0 .55rem;
}

.page-faq .triage__expect {
  padding-left: .7rem;
  border-left: 2px solid var(--turf);
  font-size: var(--step-2) !important;
  color: var(--mute) !important;
}

.page-faq .triage__next {
  margin: 0 !important;
  font-size: var(--step-2) !important;
  font-weight: 700;
  color: var(--track) !important;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 1.4rem;
  background: linear-gradient(135deg, var(--ink-2), var(--ink-3));
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-l)) 0, 100% var(--faq-cut-l), 100% 100%, var(--faq-cut-l) 100%, 0 calc(100% - var(--faq-cut-l)));
}

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

/* ---------- 02 现象清单 ---------- */
.page-faq .symptom {
  display: grid;
  gap: 1px;
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
  background: var(--line);
}

.page-faq .symptom__item {
  padding: 1rem 1.1rem;
  background: var(--ink);
}

.page-faq .symptom__title {
  margin: 0 0 .35rem;
  font-size: var(--step-3);
  font-weight: 700;
  color: var(--on-ink);
}

.page-faq .symptom__item p {
  margin: 0;
  font-size: var(--step-2);
  color: var(--faq-soft);
}

/* ---------- 03 检查项 ---------- */
.page-faq .check-list {
  display: grid;
  gap: 1rem;
  margin: 0 0 1.25rem;
  padding: 0;
  list-style: none;
}

.page-faq .check-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: var(--step-3);
  line-height: 1.7;
  color: var(--faq-soft);
}

.page-faq .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: .72rem;
  height: .72rem;
  background: var(--track);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.page-faq .check-list__k {
  display: block;
  margin-bottom: .1rem;
  font-size: var(--step-3);
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--turf);
}

/* ---------- 04 纸白信息区 ---------- */
.page-faq .faq-block--paper {
  margin: .5rem 0;
  padding: clamp(1.35rem, 3.5vw, 2.25rem);
  background: var(--paper);
  color: var(--text);
  border-top: 0;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-l)) 0, 100% var(--faq-cut-l), 100% 100%, var(--faq-cut-l) 100%, 0 calc(100% - var(--faq-cut-l)));
}

.page-faq .faq-block--paper .faq-block__title {
  color: var(--text);
}

.page-faq .faq-block--paper .faq-block__num {
  color: var(--turf-deep);
}

.page-faq .faq-block--paper .faq-block__note--paper {
  color: var(--faq-paper-mute);
}

.page-faq .faq-block--paper p {
  color: var(--text);
}

.page-faq .faq-block--paper a {
  color: var(--turf-deep);
}

.page-faq .faq-block--paper .media__caption {
  color: var(--text);
}

.page-faq .faq-figure--paper {
  background: linear-gradient(135deg, #E2E7DC, #CDD5C8);
  margin-bottom: 1.5rem;
}

.page-faq .checklist {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--step-2);
  color: var(--text);
}

.page-faq .checklist th,
.page-faq .checklist td {
  padding: .8rem .6rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--faq-paper-line);
  line-height: 1.65;
}

.page-faq .checklist thead th {
  padding-top: 0;
  border-bottom: 2px solid var(--turf-deep);
  font-size: var(--step-1);
  letter-spacing: .08em;
  font-weight: 700;
  color: var(--faq-paper-mute);
}

.page-faq .checklist tbody th {
  font-weight: 700;
  color: var(--text);
}

.page-faq .checklist tbody td {
  color: #3A4256;
}

.page-faq .checklist tbody tr:last-child th,
.page-faq .checklist tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-block__tail--paper {
  margin-top: 1.2rem;
  padding-left: .85rem;
  border-left: 2px solid var(--turf-deep);
  font-size: var(--step-2);
  color: var(--faq-paper-mute) !important;
}

/* ---------- 05 问答折叠 ---------- */
.page-faq .qa {
  display: grid;
  gap: .6rem;
}

.page-faq .qa__item {
  background: var(--ink-2);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-s)) 0, 100% var(--faq-cut-s), 100% 100%, var(--faq-cut-s) 100%, 0 calc(100% - var(--faq-cut-s)));
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  padding: .95rem 1.1rem;
  font-size: var(--step-3);
  font-weight: 700;
  line-height: 1.5;
  color: var(--on-ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q::after {
  content: "";
  flex: none;
  margin-left: auto;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--lime);
  transform: translateY(.1em);
  transition: transform .18s var(--ease);
}

.page-faq .qa__item[open] .qa__q::after {
  transform: translateY(.1em) rotate(180deg);
}

.page-faq .qa__q:hover {
  color: var(--lime);
}

.page-faq .qa__a {
  padding: 0 1.1rem 1rem;
  border-top: 1px solid var(--line);
  padding-top: .8rem;
}

.page-faq .qa__a p {
  margin: 0;
  font-size: var(--step-2);
  color: var(--faq-soft);
}

/* ---------- 06 联系 ---------- */
.page-faq .contact-grid {
  display: grid;
  gap: .9rem;
}

.page-faq .contact-card {
  padding: 1.15rem 1.15rem 1.25rem;
  background: var(--ink-2);
  border-left: 3px solid var(--turf);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut-s)) 0, 100% var(--faq-cut-s), 100% 100%, 0 100%);
}

.page-faq .contact-card__title {
  margin: 0 0 .5rem;
  font-size: var(--step-1);
  letter-spacing: .1em;
  font-weight: 700;
  color: var(--turf);
}

.page-faq .contact-card__v {
  margin: 0 0 .6rem;
  font-family: var(--font-num);
  font-size: var(--step-4);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--on-ink);
  word-break: break-all;
}

.page-faq .contact-card__desc {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--mute);
}

/* ---------- 焦点可见 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--turf);
  outline-offset: 3px;
}

/* ---------- 桌面 ---------- */
@media (min-width: 760px) {
  .page-faq .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 2rem;
  }

  .page-faq .faq-index__list {
    gap: .25rem;
  }

  .page-faq .faq-index__link {
    background: transparent;
    padding: .5rem .55rem;
    border-left: 2px solid transparent;
    clip-path: none;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: var(--ink-2);
    border-left-color: var(--lime);
  }

  .page-faq .triage {
    gap: 1rem;
  }
}

@media (max-width: 899px) {
  .page-faq .faq-index__list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    padding-bottom: .5rem;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-hero::before {
    width: 86%;
    right: -18%;
    opacity: .14;
  }

  .page-faq .triage__item {
    grid-template-columns: 1fr;
    gap: .65rem;
  }

  .page-faq .checklist thead th,
  .page-faq .checklist th,
  .page-faq .checklist td {
    padding: .7rem .35rem;
  }

  .page-faq .checklist {
    font-size: var(--step-1);
  }
}
<<<END>>>