.page-faq {
  --faq-top-pad: calc(var(--header-h) + 28px);
  background: var(--ink-800);
  color: var(--paper);
  overflow-x: hidden;
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  position: relative;
  padding: var(--faq-top-pad) 0 52px;
  background-color: var(--ink-800);
  background-image:
    repeating-linear-gradient(0deg, transparent 0 23px, rgba(30, 42, 107, 0.5) 23px 24px),
    repeating-linear-gradient(90deg, transparent 0 23px, rgba(30, 42, 107, 0.5) 23px 24px);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 80% 8%, rgba(43, 227, 214, 0.13), transparent 62%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

@media (min-width: 940px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 52px;
    align-items: start;
  }
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
}

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

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--gold);
}

.page-faq .faq-hero__text h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__text .lead {
  margin: 20px 0 0;
  max-width: 32em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

/* 检索条 */
.page-faq .faq-search {
  margin-top: 30px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  background: var(--ink-700);
  border: 1px solid var(--line-blue);
  border-left: 3px solid var(--cyan);
  transition: border-color 160ms ease;
}

.page-faq .faq-search:focus-within {
  border-left-color: var(--gold);
}

.page-faq .faq-search__icon {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-search input {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
  padding: 15px 0;
  border: 0;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-faq .faq-search input::placeholder {
  color: var(--mist);
}

.page-faq .faq-search input:focus {
  outline: none;
}

/* 高频问题 */
.page-faq .faq-hot {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-blue);
  border: 1px solid var(--line-blue);
}

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

.page-faq .faq-hot li {
  background: var(--ink-800);
  min-width: 0;
}

.page-faq .faq-hot a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 14px;
  border-left: 2px solid transparent;
  color: var(--paper);
  font-size: 14px;
  line-height: 1.55;
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.page-faq .faq-hot a:hover,
.page-faq .faq-hot a:focus-visible {
  border-left-color: var(--gold);
  background: var(--ink-700);
  color: var(--white);
}

.page-faq .faq-hot__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* 首屏图 */
.page-faq .faq-hero__media {
  margin: 4px 0 0;
  padding: 8px;
  background: var(--ink-700);
  border: 1px solid var(--line-blue);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}

.page-faq .faq-hero__cap {
  display: block;
  margin-top: 9px;
  padding: 0 2px 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ===== 主体双栏 ===== */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 8px;
  padding-bottom: 56px;
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
    padding-top: 20px;
    padding-bottom: 80px;
  }
}

.page-faq .faq-toc {
  padding: 16px 16px 18px;
  background: var(--ink-700);
  border: 1px solid var(--line-blue);
  border-top: 3px solid var(--gold);
}

@media (min-width: 1000px) {
  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }
}

.page-faq .faq-toc__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

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

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  border-left: 2px solid transparent;
  color: var(--paper);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(43, 227, 214, 0.08);
  color: var(--white);
}

.page-faq .faq-toc__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-toc__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-blue);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ===== 问答组 ===== */
.page-faq .faq-groups {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: 48px;
  padding-bottom: 8px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--cyan);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 7vw, 46px);
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 3.4vw, 26px);
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__head .tag {
  margin-left: auto;
}

/* 折叠问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--line-blue);
}

.page-faq .qa summary {
  display: block;
  position: relative;
  padding: 17px 42px 17px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color 160ms ease;
}

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

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--gold);
}

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

.page-faq .qa[open] summary {
  color: var(--white);
}

.page-faq .qa[open] summary::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .qa__body {
  max-width: 44em;
  padding: 0 0 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .qa__body p {
  margin: 0 0 12px;
}

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

.page-faq .qa__body ol {
  counter-reset: qa-step;
  margin: 12px 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-faq .qa__body ol li {
  position: relative;
  padding-left: 34px;
}

.page-faq .qa__body ol li::before {
  counter-increment: qa-step;
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--green);
}

.page-faq .qa__body .qa__hint {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-left: 2px solid var(--gold);
  background: rgba(242, 196, 107, 0.08);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--paper);
}

/* 组内配图 */
.page-faq .faq-figure {
  margin: 26px 0 0;
  max-width: 460px;
  padding: 8px;
  background: var(--ink-700);
  border: 1px solid var(--line-blue);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 8px;
  padding: 0 2px 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ===== 教程区 ===== */
.page-faq .faq-tutorials {
  position: relative;
  padding: 52px 0 56px;
  background: var(--ink-900);
  border-top: 1px solid var(--line-blue);
  border-bottom: 1px solid var(--line-blue);
  overflow: hidden;
}

.page-faq .faq-tutorials::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0 95px,
    rgba(30, 42, 107, 0.6) 95px 96px
  );
  pointer-events: none;
}

.page-faq .faq-tutorials > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-tutorials__head {
  max-width: 640px;
  margin-bottom: 30px;
}

.page-faq .faq-tutorials__head h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 36px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-tutorials__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .tut-grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 680px) {
  .page-faq .tut-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-faq .tut-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .tut-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 16px 16px 18px;
  background: var(--ink-700);
  border: 1px solid var(--line-blue);
  border-left: 3px solid var(--gold);
}

.page-faq .tut-card__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .tut-card__title {
  margin: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .tut-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .demo-row {
  margin-top: 16px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 760px) {
  .page-faq .demo-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .demo-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  min-width: 0;
  padding: 16px 18px;
  background: rgba(43, 227, 214, 0.07);
  border: 1px solid var(--cyan);
}

.page-faq .demo-card__play {
  position: relative;
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  border: 1px solid var(--cyan);
}

.page-faq .demo-card__play::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 7px;
  border-left: 8px solid var(--cyan);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

.page-faq .demo-card__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .demo-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ===== 人工支持 ===== */
.page-faq .faq-contact {
  padding: 56px 0 64px;
}

.page-faq .faq-contact__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

@media (min-width: 900px) {
  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 430px);
    gap: 56px;
    align-items: start;
  }
}

.page-faq .faq-contact__text h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.2vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-contact__text p {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-contact__cta {
  margin-top: 20px;
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line-blue);
  border: 1px solid var(--line-blue);
  border-left: 3px solid var(--cyan);
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 13px 16px;
  background: var(--ink-700);
}

.page-faq .faq-contact__label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .faq-contact__list a {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  text-decoration: none;
  word-break: break-all;
}

.page-faq .faq-contact__list a:hover,
.page-faq .faq-contact__list a:focus-visible {
  color: var(--gold);
  text-decoration: underline;
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper);
}

@media (min-width: 620px) {
  .page-faq .qa summary {
    font-size: 16px;
  }
  .page-faq .qa__body {
    font-size: 15.5px;
  }
}