.page-faq {
  background: var(--c-bg);
  color: var(--c-white);
  padding-bottom: 4rem;
}

/* ========== Hero 头部区 ========== */
.faq-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--c-bg-deep) 0%, var(--c-raise) 55%, rgba(0, 191, 255, 0.16) 100%);
}

.faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(45deg, transparent 0 8px, rgba(0, 191, 255, 0.05) 8px 9px);
  pointer-events: none;
}

.faq-hero::after {
  content: "";
  position: absolute;
  top: -40px;
  right: -140px;
  width: 360px;
  height: 120%;
  background: linear-gradient(135deg, rgba(0, 191, 255, 0.18), rgba(255, 106, 0, 0.12));
  transform: skewX(-12deg);
  pointer-events: none;
}

.faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
  align-items: center;
  padding: 2rem 0 3rem;
}

.page-faq .breadcrumb {
  position: relative;
  z-index: 1;
  margin: 1.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}

.page-faq .breadcrumb a {
  color: var(--c-blue);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

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

.faq-hero__title {
  font-family: var(--font-head);
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  line-height: 1.12;
  margin: 0.6rem 0 0.75rem;
  letter-spacing: 0.02em;
}

.faq-hero__desc {
  color: var(--c-gray);
  font-size: 1rem;
  line-height: 1.75;
  max-width: 36rem;
  margin: 0 0 1.25rem;
}

.faq-search {
  display: grid;
  gap: 0.5rem;
  max-width: 34rem;
}

.faq-search__label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-green);
}

.faq-search__input {
  width: 100%;
  box-sizing: border-box;
  background: var(--c-bg-deep);
  border: 1px solid rgba(57, 255, 20, 0.5);
  border-radius: var(--radius);
  color: var(--c-white);
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.faq-search__input::placeholder {
  color: var(--c-gray);
}

.faq-search__input:focus {
  outline: none;
  border-color: var(--c-green);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.16);
}

.faq-search__hint {
  font-size: 0.82rem;
  color: var(--c-gray);
}

.faq-hero__media {
  margin: 0;
  border: 1px solid rgba(0, 191, 255, 0.3);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-card);
}

.faq-hero__media::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 72%;
  height: 4px;
  background: linear-gradient(90deg, var(--c-blue), var(--c-orange));
}

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

/* ========== 主体布局 ========== */
.faq-layout {
  display: grid;
  gap: 2.25rem;
  padding-top: 2.75rem;
  align-items: start;
}

.faq-layout__main {
  min-width: 0;
}

/* ========== 侧边分类索引 ========== */
.faq-index {
  background: var(--c-raise);
  border-left: 3px solid var(--c-blue);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 1.25rem 1.25rem 1.5rem;
}

.faq-index__title {
  font-family: var(--font-head);
  font-size: 1.06rem;
  margin: 0 0 1rem;
  letter-spacing: 0.04em;
  color: var(--c-white);
}

.faq-index__list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: grid;
  gap: 0.3rem;
}

.faq-index__link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.6rem;
  border-radius: var(--radius);
  color: var(--c-gray);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--duration) var(--ease), background-color var(--duration) var(--ease);
}

.faq-index__link:hover,
.faq-index__link:focus-visible {
  color: var(--c-white);
  background: rgba(0, 191, 255, 0.08);
  outline: none;
}

.faq-index__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.faq-index__dot--blue {
  background: var(--c-blue);
}

.faq-index__dot--orange {
  background: var(--c-orange);
}

.faq-index__dot--green {
  background: var(--c-green);
}

.faq-index__dot--paper {
  background: var(--c-paper);
}

.faq-index__panel {
  margin-top: 1rem;
}

.faq-index__panel a {
  color: var(--c-blue);
}

/* ========== 分类 Section ========== */
.faq-section {
  margin-bottom: 2.75rem;
  scroll-margin-top: 2rem;
}

.faq-section__title {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.3;
  margin: 0 0 1.25rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid rgba(160, 160, 168, 0.22);
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.faq-section:target .faq-section__title {
  color: var(--c-blue);
}

.faq-section__num {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 400;
  color: var(--c-orange);
  white-space: nowrap;
}

.faq-section__more {
  margin-top: 1rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius);
  background: rgba(0, 191, 255, 0.08);
  font-size: 0.9rem;
  color: var(--c-gray);
}

.faq-section__more a {
  color: var(--c-blue);
  text-decoration: none;
}

.faq-section__more a:hover {
  text-decoration: underline;
}

/* ========== 手风琴条目 ========== */
.faq-item {
  background: var(--c-raise);
  border: 1px solid rgba(160, 160, 168, 0.15);
  border-left: 3px solid transparent;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color var(--duration) var(--ease);
}

.faq-item[open] {
  border-color: rgba(0, 191, 255, 0.45);
}

.faq-section--entry .faq-item[open] {
  border-left-color: var(--c-blue);
}

.faq-section--login .faq-item[open] {
  border-left-color: var(--c-orange);
}

.faq-section--mobile .faq-item[open] {
  border-left-color: var(--c-green);
}

.faq-section--match .faq-item[open] {
  border-left-color: var(--c-paper);
}

.faq-item__summary {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.95rem 1.1rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background-color var(--duration) var(--ease);
}

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

.faq-item__summary:hover,
.faq-item__summary:focus-visible {
  background: rgba(0, 191, 255, 0.07);
  outline: none;
}

.faq-item__summary::before {
  content: "Q";
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--c-ink);
  background: var(--c-blue);
  width: 26px;
  height: 26px;
  border-radius: 5px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  transition: transform var(--duration) var(--ease);
}

.faq-section--login .faq-item__summary::before {
  background: var(--c-orange);
}

.faq-section--mobile .faq-item__summary::before {
  background: var(--c-green);
}

.faq-section--match .faq-item__summary::before {
  background: var(--c-paper);
}

.faq-item[open] .faq-item__summary::before {
  transform: rotate(-6deg);
}

.faq-item__question {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--c-white);
  line-height: 1.5;
  font-size: 0.98rem;
}

.faq-item__icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
  margin-left: auto;
  border: 1px solid var(--c-blue);
  border-radius: 50%;
  transition: transform var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.faq-item__icon::before,
.faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--c-blue);
  transform: translate(-50%, -50%);
  transition: background-color var(--duration) var(--ease);
}

.faq-item__icon::before {
  width: 10px;
  height: 2px;
}

.faq-item__icon::after {
  width: 2px;
  height: 10px;
}

.faq-item[open] .faq-item__icon {
  transform: rotate(45deg);
  border-color: var(--c-green);
}

.faq-item[open] .faq-item__icon::before,
.faq-item[open] .faq-item__icon::after {
  background: var(--c-green);
}

/* ========== 答案展开动画 ========== */
.faq-item__answer {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  transition: grid-template-rows var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

.faq-item[open] .faq-item__answer {
  grid-template-rows: 1fr;
  opacity: 1;
}

.faq-item__answer-inner {
  min-height: 0;
  overflow: hidden;
  padding: 0 1.1rem;
  color: #D8D8DF;
  font-size: 0.95rem;
  line-height: 1.75;
}

.faq-item[open] .faq-item__answer-inner {
  padding-top: 0.2rem;
  padding-bottom: 1.1rem;
}

.faq-item__answer-inner p {
  margin: 0 0 0.65rem;
}

.faq-item__answer-inner p:last-child {
  margin-bottom: 0;
}

.faq-item__answer-inner a {
  color: var(--c-blue);
  text-decoration: none;
}

.faq-item__answer-inner a:hover {
  text-decoration: underline;
}

.faq-steps {
  margin: 0.75rem 0;
  padding-left: 1.25rem;
}

.faq-steps li + li {
  margin-top: 0.3rem;
}

.faq-note {
  margin-top: 0.85rem;
  padding: 0.6rem 0.8rem;
  background: rgba(255, 106, 0, 0.1);
  border-left: 3px solid var(--c-orange);
  color: var(--c-paper);
  font-size: 0.88rem;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ========== 登录答案中的图文组合 ========== */
.faq-answer-media {
  display: grid;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.faq-answer-media__figure {
  margin: 0;
  border: 1px solid rgba(255, 106, 0, 0.35);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-bg-deep);
}

.faq-answer-media__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.faq-answer-media__figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-gray);
  padding: 0.45rem 0.75rem;
  background: var(--c-bg-deep);
  letter-spacing: 0.04em;
}

/* ========== 底部联系条 ========== */
.faq-contact {
  margin-top: 0.5rem;
  border-left: 4px solid var(--c-green);
}

.faq-contact a {
  color: var(--c-blue);
}

.faq-contact a:hover {
  text-decoration: underline;
}

/* ========== 响应式增强 ========== */
@media (min-width: 640px) {
  .faq-answer-media {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: start;
  }

  .faq-hero__grid {
    padding-top: 2.5rem;
  }
}

@media (min-width: 960px) {
  .faq-hero__grid {
    grid-template-columns: 1.2fr 0.8fr;
    padding: 3rem 0 3.5rem;
  }

  .faq-layout {
    grid-template-columns: 250px 1fr;
    gap: 3.5rem;
    padding-top: 3rem;
  }

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

  .faq-item__question {
    font-size: 1rem;
  }
}

@media (min-width: 1200px) {
  .faq-layout {
    grid-template-columns: 300px 1fr;
    gap: 4.5rem;
  }
}