.page-faq {
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(22px, 3.6vw, 38px) 0 clamp(34px, 5vw, 58px);
  background: linear-gradient(170deg, var(--ivory) 0%, var(--ivory) 61%, var(--ivory-deep) 61%, var(--ivory-deep) 100%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -140px;
  right: -40px;
  width: clamp(200px, 32vw, 400px);
  height: clamp(200px, 32vw, 400px);
  background: var(--ice);
  opacity: 0.5;
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(30px, 4.5vw, 48px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-title {
  margin: clamp(10px, 1.6vw, 16px) 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 4.6vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 16em;
}

.page-faq .faq-lead {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 34em;
  font-size: clamp(15.5px, 1.5vw, 17.5px);
  line-height: 1.8;
  color: var(--ink-70);
}

.page-faq .faq-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 252, 246, 0.75);
  color: var(--ink-70);
  font-size: 0.85rem;
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-jump a:hover {
  border-color: var(--pulse);
  color: var(--pulse-deep);
  background: #FFFCF6;
}

/* 层叠图 */
.page-faq .faq-stack {
  position: relative;
  margin: 0;
  padding: 0;
}

.page-faq .faq-stack::before,
.page-faq .faq-stack::after {
  content: "";
  position: absolute;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-stack::before {
  inset: 14px -12px -12px 14px;
  background: var(--ivory-deep);
}

.page-faq .faq-stack::after {
  inset: -12px 12px 12px -12px;
  background: rgba(191, 227, 242, 0.5);
}

.page-faq .faq-stack__card {
  position: relative;
  z-index: 2;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #FFFCF6;
  box-shadow: 0 16px 34px rgba(18, 18, 20, 0.12);
}

.page-faq .faq-stack__note {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: baseline;
  gap: 8px;
  width: fit-content;
  margin: -26px 0 0 10px;
  padding: 9px 14px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--ivory);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
}

.page-faq .faq-stack__note strong {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--amber);
}

/* ---------- 手册主体 ---------- */
.page-faq .faq-manual {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding: clamp(30px, 5vw, 54px) 0 clamp(48px, 7vw, 84px);
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #FFFCF6;
  padding: 16px 14px 14px;
}

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--ink-55);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 8px 8px 7px;
  border-left: 2px solid transparent;
  color: var(--ink-70);
  font-size: 0.94rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-index__list a:hover {
  color: var(--pulse-deep);
  border-left-color: var(--pulse);
  background: var(--tint);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--pulse);
  letter-spacing: 0.06em;
}

.page-faq .faq-index__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--ink-55);
}

.page-faq .faq-index__foot a {
  color: var(--pulse-deep);
  text-underline-offset: 3px;
}

.page-faq .faq-section {
  padding: clamp(26px, 4vw, 44px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 84px;
}

.page-faq .faq-body > .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-sec-head {
  display: grid;
  gap: 9px;
}

.page-faq .faq-sec-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(21px, 2.7vw, 29px);
  line-height: 1.32;
  letter-spacing: -0.01em;
}

.page-faq .faq-sec-lead {
  margin: 0;
  max-width: 42em;
  font-size: 0.97rem;
  line-height: 1.78;
  color: var(--ink-70);
}

/* ---------- 自检清单 ---------- */
.page-faq .faq-check-wrap {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-check {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-check__item {
  position: relative;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 13px 12px 13px 8px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: background-color 0.18s ease;
}

.page-faq .faq-check__item:hover {
  background: rgba(255, 225, 214, 0.4);
}

.page-faq .faq-check__box {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
}

.page-faq .faq-check__mark {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1.5px solid var(--ink-55);
  border-radius: 2px;
  background: #FFFCF6;
  position: relative;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-check__mark::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--ivory);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0.6);
  opacity: 0;
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.page-faq .faq-check__box:checked + .faq-check__mark {
  background: var(--pulse);
  border-color: var(--pulse);
}

.page-faq .faq-check__box:checked + .faq-check__mark::after {
  opacity: 1;
  transform: rotate(45deg) scale(1);
}

.page-faq .faq-check__text {
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--ink-70);
}

.page-faq .faq-check__text strong {
  display: block;
  margin-bottom: 3px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  color: var(--ink-55);
}

/* ---------- 分区面板 ---------- */
.page-faq .faq-panel {
  margin-top: clamp(18px, 2.6vw, 26px);
  padding: clamp(18px, 2.8vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-panel--ice {
  background: rgba(191, 227, 242, 0.36);
  border-color: rgba(18, 18, 20, 0.1);
}

.page-faq .faq-panel--calm {
  background: rgba(143, 166, 160, 0.18);
}

.page-faq .faq-zones {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-zone {
  display: grid;
  gap: 5px;
  padding-bottom: 13px;
  border-bottom: 1px dashed rgba(18, 18, 20, 0.18);
}

.page-faq .faq-zone:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-zone dt {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 0.99rem;
  line-height: 1.5;
}

.page-faq .faq-zone dd {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.76;
  color: var(--ink-70);
}

.page-faq .faq-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(18, 18, 20, 0.12);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--ink-70);
}

.page-faq .faq-specs {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .faq-specs li {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid rgba(18, 18, 20, 0.16);
  border-radius: 2px;
  background: rgba(255, 252, 246, 0.8);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.03em;
}

.page-faq .faq-spec__k {
  color: var(--ink-55);
  text-transform: uppercase;
}

.page-faq .faq-spec__v {
  color: var(--ink);
  font-weight: 500;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-accordion {
  margin-top: clamp(16px, 2.4vw, 22px);
}

.page-faq .faq-item {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #FFFCF6;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(18, 18, 20, 0.07);
}

.page-faq .faq-item[open] {
  border-color: var(--ink);
  box-shadow: 0 12px 26px rgba(18, 18, 20, 0.09);
}

.page-faq .faq-item > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 14px 46px 14px 16px;
  font-size: 0.99rem;
  font-weight: 600;
  line-height: 1.55;
  transition: color 0.18s ease;
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--pulse);
}

.page-faq .faq-item[open] > summary::after {
  content: "−";
}

.page-faq .faq-item > summary:hover {
  color: var(--pulse-deep);
}

.page-faq .faq-answer {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-answer p {
  margin: 12px 0 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--ink-70);
}

.page-faq .faq-answer .faq-first {
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-answer a {
  color: var(--pulse-deep);
  text-underline-offset: 3px;
}

.page-faq .faq-steps-list {
  margin: 10px 0 0;
  padding: 0 0 0 4px;
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 7px;
}

.page-faq .faq-steps-list li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 26px;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--ink-70);
}

.page-faq .faq-steps-list li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--pulse);
}

/* ---------- 回归步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-faq .faq-steps > li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .faq-step-num {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(18, 18, 20, 0.2);
  border-radius: 50%;
  background: #FFFCF6;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--pulse-deep);
}

.page-faq .faq-steps h3 {
  margin: 4px 0 6px;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--ink-70);
}

/* ---------- 联系面板 ---------- */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  margin-top: clamp(18px, 2.6vw, 26px);
  padding: clamp(20px, 3vw, 34px);
  border-radius: var(--radius);
  background: var(--night);
  color: var(--ivory);
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pulse), var(--amber) 72%, rgba(255, 209, 102, 0));
}

.page-faq .faq-contact::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 77, 31, 0.34), rgba(255, 77, 31, 0) 70%);
}

.page-faq .faq-contact > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-faq .faq-contact__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.06rem;
  color: var(--ivory);
}

.page-faq .faq-channel {
  display: grid;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px solid var(--ivory-14);
}

.page-faq .faq-channel__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--ivory-46);
  text-transform: uppercase;
}

.page-faq .faq-channel__value {
  width: fit-content;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ivory);
  text-decoration: none;
  border-bottom: 1px solid rgba(247, 243, 234, 0.35);
  transition: color 0.18s ease, border-color 0.18s ease;
  word-break: break-all;
}

.page-faq .faq-channel__value:hover {
  color: var(--amber);
  border-color: var(--amber);
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--ivory-70);
}

.page-faq .faq-contact__note a {
  color: var(--amber);
  text-underline-offset: 3px;
}

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

.page-faq .faq-tips li {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  gap: 8px;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ivory-70);
}

.page-faq .faq-tips li::before {
  content: "—";
  font-family: var(--font-mono);
  color: var(--amber);
}

/* ---------- 行动点 ---------- */
.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(16px, 2.4vw, 22px);
}

/* ---------- 焦点态 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq .faq-check__box:focus-visible + .faq-check__mark {
  outline: 2px solid var(--pulse);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-check-wrap {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
    gap: clamp(22px, 3vw, 34px);
  }

  .page-faq .faq-figure {
    position: sticky;
    top: 24px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: center;
  }

  .page-faq .faq-manual {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 68px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__list {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-jump a,
  .page-faq .faq-index__list a,
  .page-faq .faq-check__mark,
  .page-faq .faq-check__mark::after {
    transition: none;
  }

  .page-faq .faq-item:hover {
    transform: none;
  }
}
<<<END>>>