.page-faq {
  --faq-rail: 250px;
  --faq-ink-line: rgba(154, 174, 201, .28);
  --faq-body-text: #3d4c66;
  background: var(--ink-800);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 32px 0 60px;
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -140px;
  width: 560px;
  height: 560px;
  background:
    linear-gradient(125deg, rgba(255, 107, 53, .34), rgba(255, 107, 53, 0) 62%),
    radial-gradient(circle at 32% 34%, rgba(0, 194, 168, .24), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--faq-ink-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--faq-ink-line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: .34;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 80%);
  mask-image: linear-gradient(to bottom, #000, transparent 80%);
  pointer-events: none;
}

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

.page-faq .faq-hero__kicker {
  margin: 20px 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
  font-weight: 700;
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 15ch;
  font-size: clamp(2rem, 8.4vw, 4.4rem);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.08;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 640px;
  color: var(--steel);
  font-size: 17px;
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  font-size: 14px;
  color: var(--steel);
}

.page-faq .faq-hero__facts .mono {
  color: var(--orange);
  font-weight: 700;
  margin-right: 6px;
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  background: var(--paper);
  color: var(--graphite);
  padding: 44px 0 80px;
}

.page-faq .faq-shell {
  display: grid;
  gap: 30px;
}

/* 问题目录 */
.page-faq .faq-toc {
  min-width: 0;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  font-weight: 700;
  color: var(--teal-deep);
}

.page-faq .faq-toc__nav {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 12px 10px;
  font-size: 14px;
  color: #4a5a75;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

.page-faq .faq-toc__link:hover {
  color: var(--ink-900);
  border-bottom-color: var(--orange);
}

.page-faq .faq-toc__link:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .faq-toc__no {
  font-size: 12px;
  color: var(--orange);
}

.page-faq .faq-toc__hint {
  display: none;
}

/* 章节 */
.page-faq .faq-content {
  min-width: 0;
}

.page-faq .faq-sec {
  scroll-margin-top: 24px;
  padding: 0 0 42px;
}

.page-faq .faq-sec__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-sec__title {
  margin: 6px 0 12px;
  font-size: clamp(1.5rem, 5vw, 2.1rem);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--ink-900);
}

.page-faq .faq-sec__lede {
  margin: 0 0 22px;
  max-width: 640px;
  color: #4a5a75;
}

/* 深色段 */
.page-faq .faq-sec--ink {
  background: var(--ink-800);
  color: var(--paper);
  border: 1px solid var(--rule-strong);
  box-shadow: 10px 10px 0 var(--ink-900);
  padding: 28px 20px 30px;
  margin-bottom: 46px;
}

.page-faq .faq-sec--ink .faq-sec__title {
  color: var(--paper);
}

.page-faq .faq-sec--ink .faq-sec__lede {
  color: var(--steel);
}

.page-faq .faq-sec--ink .qa__q {
  color: var(--paper);
}

.page-faq .faq-sec--ink .qa__a {
  color: #c3d3e6;
}

.page-faq .faq-sec--ink .qa__a a {
  color: var(--orange-soft);
}

/* 三步 */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-faq .step {
  border-top: 3px solid var(--orange);
  padding-top: 14px;
}

.page-faq .step__no {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .14em;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .step__title {
  margin: 0 0 8px;
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink-900);
}

.page-faq .step__text {
  margin: 0;
  font-size: 15px;
  color: var(--faq-body-text);
}

.page-faq .note-strip {
  margin: 26px 0 0;
}

.page-faq .note-strip__label {
  color: var(--teal-deep);
}

/* 两步对照 */
.page-faq .duo {
  display: grid;
  gap: 18px;
  margin: 26px 0 0;
}

.page-faq .duo__step {
  border-left: 3px solid var(--orange);
  padding: 4px 0 4px 16px;
}

.page-faq .duo__no {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange-soft);
}

.page-faq .duo__title {
  margin: 0 0 8px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .duo__text {
  margin: 0;
  font-size: 15px;
  color: #c3d3e6;
}

.page-faq .duo__arrow {
  display: none;
  align-self: center;
  justify-self: center;
  transform: rotate(-8deg);
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--orange);
}

.page-faq .duo__done {
  display: inline-block;
  margin-top: 20px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--teal);
  border: 1px solid rgba(0, 194, 168, .5);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 22px 0 32px;
}

.page-faq .faq-figure .figure__frame {
  background: var(--ink-900);
  border: 1px solid var(--rule);
  padding: 8px;
}

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

.page-faq .faq-figure .figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: #4a5a75;
}

.page-faq .faq-sec--ink .faq-figure .figure__caption {
  color: var(--steel);
}

/* 问答折叠 */
.page-faq .qa {
  border-bottom: 1px solid var(--rule-strong);
  scroll-margin-top: 20px;
}

.page-faq .qa[open] {
  box-shadow: inset 3px 0 0 var(--teal);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink-900);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  line-height: 1.4;
  color: var(--orange);
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .qa__a {
  padding: 0 0 18px 12px;
  font-size: 15.5px;
  color: var(--faq-body-text);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 640px;
}

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

.page-faq .qa__a a {
  color: var(--teal-deep);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* 权限卡 */
.page-faq .roles {
  display: grid;
  gap: 14px;
  margin: 0 0 26px;
}

.page-faq .role-card {
  background: #fff;
  border: 1px solid var(--rule-strong);
  border-top: 3px solid var(--ink-700);
  padding: 16px 16px 18px;
}

.page-faq .role-card:nth-child(2) {
  border-top-color: var(--teal);
}

.page-faq .role-card:nth-child(3) {
  border-top-color: var(--orange);
}

.page-faq .role-card__name {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink-900);
}

.page-faq .role-card__desc {
  margin: 0;
  font-size: 14.5px;
  color: var(--faq-body-text);
}

/* 联系卡 */
.page-faq .contact-grid {
  display: grid;
  gap: 14px;
  margin: 0 0 28px;
}

.page-faq .contact-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--rule-strong);
  border-left: 3px solid var(--orange);
  padding: 16px;
}

.page-faq .contact-card__label {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .14em;
  font-weight: 700;
  color: var(--teal-deep);
}

.page-faq .contact-card__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
  word-break: break-all;
}

.page-faq .contact-card__val--mail {
  font-size: 14px;
}

.page-faq .contact-card__note {
  margin: 0;
  font-size: 13px;
  color: #4a5a75;
}

.page-faq .copy-btn {
  margin-top: auto;
  align-self: flex-start;
  font: inherit;
  font-size: 13px;
  padding: 6px 14px;
  border: 1px solid var(--teal);
  background: transparent;
  color: var(--teal-deep);
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  background: var(--teal);
  color: var(--ink-900);
}

.page-faq .copy-btn[data-copied] {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--ink-900);
}

/* 收尾 */
.page-faq .faq-cta {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 6px;
  padding-top: 26px;
  border-top: 1px solid var(--rule-strong);
}

.page-faq .faq-cta__text {
  margin: 0;
  max-width: 520px;
  font-size: 15px;
  color: #4a5a75;
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-cta .btn--accent {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink-900);
}

.page-faq .faq-cta .btn--ghost {
  background: transparent;
  border: 1px solid var(--ink-700);
  color: var(--ink-900);
}

/* ---------- 中等宽度 ---------- */
@media (min-width: 700px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .duo {
    grid-template-columns: 1fr auto 1fr;
    align-items: stretch;
    gap: 20px;
  }

  .page-faq .duo__arrow {
    display: block;
  }

  .page-faq .roles,
  .page-faq .contact-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 52px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 32px;
    align-self: start;
  }

  .page-faq .faq-toc__nav {
    flex-direction: column;
    overflow: visible;
    gap: 0;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__link {
    display: flex;
    width: 100%;
    white-space: normal;
    padding: 10px 8px 10px 12px;
    border-bottom: 0;
    border-left: 3px solid transparent;
    transition: color .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
  }

  .page-faq .faq-toc__link:hover {
    color: var(--ink-900);
    border-left-color: var(--orange);
  }

  .page-faq .faq-toc__link.is-active,
  .page-faq .faq-toc__link[aria-current] {
    color: var(--ink-900);
    font-weight: 700;
    border-left-color: var(--orange);
    background: rgba(255, 107, 53, .07);
  }

  .page-faq .faq-toc__hint {
    display: block;
    margin: 20px 0 0;
    padding-top: 16px;
    border-top: 1px solid var(--rule-strong);
    font-size: 13px;
    line-height: 1.7;
    color: #4a5a75;
  }

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

  .page-faq .faq-sec--ink {
    padding: 36px 32px 38px;
  }
}
<<<END>>>