.page-faq {
  --faq-sticky: 96px;
  display: block;
  overflow-x: clip;
  background: var(--snow);
  color: var(--high-blue);
  font-family: var(--font-body);
}

/* ---------- 封面区 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-4) 0 var(--space-6);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(25, 227, 196, 0.16), transparent 62%),
    linear-gradient(165deg, var(--night) 0%, var(--high-blue) 72%, #0d3355 100%);
  color: var(--snow);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -48%;
  width: 124%;
  height: 260px;
  background: repeating-linear-gradient(112deg, rgba(185, 214, 234, 0.14) 0 1px, transparent 1px 28px);
  transform: skewY(-7deg);
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumb__link {
  color: rgba(245, 248, 251, 0.74);
  text-decoration: none;
  transition: color 0.18s ease;
}

.page-faq .faq-hero .breadcrumb__link:hover,
.page-faq .faq-hero .breadcrumb__link:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.page-faq .faq-hero__lead {
  min-width: 0;
}

.page-faq .faq-hero__lead .section-label {
  margin: 0 0 var(--space-2);
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 var(--space-3);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(245, 248, 251, 0.82);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-3);
}

.page-faq .faq-hero__tags .data-chip {
  border-color: var(--line-cyan);
  color: var(--ice);
  background: rgba(25, 227, 196, 0.08);
}

.page-faq .faq-hero__quick {
  align-self: start;
  border: 1px solid var(--line-cyan);
  background: rgba(6, 22, 38, 0.55);
  padding: var(--space-3);
}

.page-faq .faq-hero__quick-label {
  margin: 0 0 var(--space-2);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(185, 214, 234, 0.16);
}

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

.page-faq .faq-hero__stat-num {
  flex: 0 0 auto;
  min-width: 56px;
  font-size: 1.45rem;
  line-height: 1;
  font-weight: 600;
  color: var(--orange);
}

.page-faq .faq-hero__stat-label {
  font-size: 0.82rem;
  line-height: 1.5;
  color: rgba(245, 248, 251, 0.76);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding: var(--space-5) 0 var(--space-7);
}

.page-faq .faq-layout {
  display: grid;
  gap: var(--space-5);
}

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

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  border-top: 2px solid var(--high-blue);
  padding-top: var(--space-2);
}

.page-faq .faq-toc__label {
  margin: 0 0 var(--space-2);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--stone);
}

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

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  border-left: 2px solid transparent;
  color: var(--high-blue);
  text-decoration: none;
  font-size: 0.94rem;
  line-height: 1.4;
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(185, 214, 234, 0.24);
}

.page-faq .faq-toc__num {
  position: relative;
  flex: 0 0 auto;
  padding-left: 12px;
  font-size: 0.7rem;
  color: var(--stone);
}

.page-faq .faq-toc__num::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--ice);
  transform: translateY(-50%);
  transition: background-color 0.18s ease;
}

.page-faq .faq-toc__link:hover .faq-toc__num::before,
.page-faq .faq-toc__link:focus-visible .faq-toc__num::before {
  background: var(--orange);
}

.page-faq .faq-toc__note {
  margin: var(--space-3) 0 0;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--stone);
}

.page-faq .faq-toc__note-link {
  color: var(--high-blue);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-underline-offset: 3px;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  scroll-margin-top: 88px;
}

.page-faq .faq-section + .faq-section {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line-light);
}

.page-faq .faq-section__head .section-label {
  margin: 0 0 var(--space-1);
  color: var(--clay);
}

.page-faq .faq-section__head .section-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.2vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-faq .faq-section__head .section-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 三步 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-faq .faq-steps__item {
  position: relative;
  padding-top: var(--space-2);
  border-top: 3px solid var(--orange);
  background: linear-gradient(180deg, rgba(255, 106, 26, 0.07), rgba(255, 106, 26, 0) 64%);
}

.page-faq .faq-steps__num {
  display: block;
  margin-bottom: 6px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-faq .faq-steps__title {
  margin: 0 0 6px;
  font-size: 1.06rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(10, 40, 70, 0.78);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: var(--space-4) 0 0;
}

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

.page-faq .faq-figure .media-frame__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--stone);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-accordion {
  margin-top: var(--space-4);
  border-top: 1px solid var(--line-light);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-light);
  transition: background-color 0.18s ease;
}

.page-faq .faq-item[open] {
  background: rgba(185, 214, 234, 0.2);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 15px 12px;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--high-blue);
  box-shadow: inset 2px 0 0 transparent;
  transition: box-shadow 0.18s ease, color 0.18s ease;
}

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

.page-faq .faq-item__summary:hover,
.page-faq .faq-item__summary:focus-visible {
  box-shadow: inset 2px 0 0 var(--cyan);
  color: var(--high-blue);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--orange);
  border-radius: 1px;
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
  transition: transform 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-item__body {
  padding: 0 12px 18px;
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
  font-size: 0.93rem;
  line-height: 1.78;
  color: rgba(10, 40, 70, 0.82);
}

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

.page-faq .faq-item__body ol {
  counter-reset: faqstep;
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-item__body ol li {
  counter-increment: faqstep;
  position: relative;
  padding-left: 34px;
  font-size: 0.93rem;
  line-height: 1.72;
  color: rgba(10, 40, 70, 0.82);
}

.page-faq .faq-item__body ol li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--orange);
  background: rgba(255, 106, 26, 0.12);
  padding: 0 4px;
}

.page-faq .faq-tip {
  margin: 12px 0 0;
  padding: 11px 14px;
  background: var(--ice);
  border-left: 3px solid var(--high-blue);
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--high-blue);
}

.page-faq .faq-inline-link {
  color: var(--high-blue);
  text-decoration: underline;
  text-decoration-color: var(--cyan);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: text-decoration-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--clay);
  text-decoration-color: var(--orange);
}

/* ---------- 支持区 ---------- */
.page-faq .faq-support {
  position: relative;
  padding: var(--space-4) var(--space-3) var(--space-5);
  background:
    repeating-linear-gradient(118deg, rgba(185, 214, 234, 0.08) 0 1px, transparent 1px 30px),
    linear-gradient(150deg, var(--night) 0%, var(--high-blue) 100%);
  color: var(--snow);
}

.page-faq .faq-support__label {
  margin: 0 0 var(--space-2);
  color: var(--cyan);
}

.page-faq .faq-support__title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.4vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.page-faq .faq-support__lede {
  margin: 0 0 var(--space-3);
  max-width: 54ch;
  font-size: 0.94rem;
  line-height: 1.78;
  color: rgba(245, 248, 251, 0.8);
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-faq .faq-support .contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(185, 214, 234, 0.18);
}

.page-faq .faq-support .contact-label {
  flex: 0 0 auto;
  min-width: 72px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ice);
}

.page-faq .faq-support .contact-value {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  word-break: break-all;
  color: var(--snow);
}

.page-faq .faq-support .contact-value--email {
  color: var(--cyan);
}

.page-faq .faq-support .copy-email {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: var(--space-3);
  padding: 11px 18px;
  border: 0;
  background: var(--orange);
  color: var(--night);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-support .copy-email:hover,
.page-faq .faq-support .copy-email:focus-visible {
  background: var(--cyan);
  color: var(--night);
}

.page-faq .faq-support .copy-email__status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.page-faq .faq-support__note {
  margin: var(--space-3) 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: rgba(245, 248, 251, 0.72);
}

.page-faq .faq-support__note .faq-inline-link {
  color: var(--ice);
  text-decoration-color: var(--cyan);
}

.page-faq .faq-support__note .faq-inline-link:hover,
.page-faq .faq-support__note .faq-inline-link:focus-visible {
  color: var(--cyan);
  text-decoration-color: var(--orange);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: var(--space-5) 0 var(--space-7);
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
  }

  .page-faq .faq-support {
    padding: var(--space-5) var(--space-5) var(--space-6);
  }

  .page-faq .faq-support .contact-value {
    font-size: 1rem;
  }

  .page-faq .faq-item__summary {
    padding: 17px 16px;
    font-size: 1.04rem;
  }

  .page-faq .faq-item__body {
    padding: 0 16px 22px;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 268px;
    gap: var(--space-6);
    align-items: start;
  }

  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-item__body p,
  .page-faq .faq-item__body ol li {
    font-size: 0.96rem;
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
  }
}