.page-faq {
  background: var(--c-black);
  color: var(--c-white);
  overflow-x: hidden;
}

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-topbar {
  padding-top: 28px;
}

.page-faq .faq-topbar .breadcrumbs {
  font-size: 14px;
  color: var(--c-gray);
}

.page-faq .faq-topbar .breadcrumbs a {
  color: var(--c-silver);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .faq-topbar .breadcrumbs a:hover {
  color: var(--c-white);
}

.page-faq .faq-topbar .breadcrumbs [aria-current="page"] {
  color: var(--c-red);
  font-weight: 600;
}

/* ---------- 首屏标题 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 32px 0 48px;
  border-bottom: 1px solid rgba(184, 184, 208, .16);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--c-red) 0%, var(--c-red) 120px, transparent 120px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 10%;
  top: 0;
  width: 120px;
  height: 100%;
  background: repeating-linear-gradient(
    115deg,
    transparent 0,
    transparent 14px,
    rgba(184, 184, 208, .06) 14px,
    rgba(184, 184, 208, .06) 15px
  );
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.page-faq .faq-hero .section-label {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: .18em;
  color: var(--c-silver);
  background: rgba(230, 57, 70, .12);
  border: 1px solid rgba(230, 57, 70, .3);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 20px;
}

.page-faq .faq-hero .page-title {
  position: relative;
  font-size: clamp(44px, 9vw, 96px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -.03em;
  margin: 0 0 20px;
  padding-left: 24px;
}

.page-faq .faq-hero .page-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 4px;
  background: var(--c-red);
  border-radius: 2px;
}

.page-faq .faq-hero .page-lead {
  max-width: 600px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-silver);
  margin: 0;
}

.page-faq .faq-hero__deco {
  position: absolute;
  right: 0;
  top: 28px;
  font-family: var(--font-num);
  font-size: clamp(56px, 8vw, 96px);
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px rgba(230, 57, 70, .32);
  opacity: .7;
  pointer-events: none;
  user-select: none;
  line-height: 1;
  text-align: right;
  z-index: 0;
}

.page-faq .faq-hero__deco span {
  color: var(--c-red);
  -webkit-text-stroke: 0;
  opacity: .55;
  padding: 0 4px;
}

/* ---------- 快速导航 ---------- */
.page-faq .faq-quicknav {
  padding: 48px 0 40px;
  position: relative;
}

.page-faq .faq-quicknav::before {
  content: "";
  position: absolute;
  top: 0;
  left: -10%;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at 20% 30%, rgba(29, 53, 87, .55), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-quicknav__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-faq .faq-quicknav__visual {
  position: relative;
}

.page-faq .faq-quicknav__visual::after {
  content: "";
  position: absolute;
  right: -12px;
  bottom: -12px;
  width: 120px;
  height: 120px;
  border-right: 2px solid var(--c-red);
  border-bottom: 2px solid var(--c-red);
  border-radius: 0 0 12px 0;
  pointer-events: none;
}

.page-faq .faq-quicknav__visual .media-frame {
  border: 1px solid rgba(184, 184, 208, .22);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-panel);
  background: #10141C;
}

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

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

.page-faq .faq-quicknav__panel .section-label {
  color: var(--c-red);
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: .18em;
  display: block;
  margin-bottom: 10px;
}

.page-faq .faq-quicknav__panel .section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 10px;
}

.page-faq .faq-quicknav__desc {
  color: var(--c-silver);
  font-size: 15px;
  line-height: 1.6;
  margin: 0 0 28px;
}

.page-faq .faq-quicknav__panel .tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid rgba(184, 184, 208, .2);
  padding-bottom: 16px;
}

.page-faq .faq-quicknav__panel .tab-button {
  background: transparent;
  border: 1px solid rgba(184, 184, 208, .25);
  color: var(--c-silver);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 14px;
  cursor: pointer;
  transition: all .25s var(--ease);
}

.page-faq .faq-quicknav__panel .tab-button:hover {
  border-color: var(--c-white);
  color: var(--c-white);
}

.page-faq .faq-quicknav__panel .tab-button.is-active {
  background: var(--c-red);
  border-color: var(--c-red);
  color: var(--c-white);
  font-weight: 600;
}

.page-faq .faq-quicknav__panel .tab-panel {
  margin-top: 16px;
}

.page-faq .tab-panel[hidden] {
  display: none;
}

.page-faq .faq-quicknav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-quicknav__list li {
  margin-bottom: 8px;
}

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

.page-faq .faq-quicknav__list a {
  display: block;
  padding: 12px 16px;
  background: rgba(255, 255, 255, .045);
  border: 1px solid rgba(184, 184, 208, .18);
  border-radius: var(--radius);
  color: var(--c-white);
  font-size: 15px;
  line-height: 1.45;
  text-decoration: none;
  transition: border-color .25s var(--ease), background-color .25s var(--ease), transform .2s var(--ease-out);
}

.page-faq .faq-quicknav__list a::before {
  content: "→";
  color: var(--c-red);
  margin-right: 8px;
  font-family: var(--font-num);
}

.page-faq .faq-quicknav__list a:hover {
  background: rgba(230, 57, 70, .08);
  border-color: rgba(230, 57, 70, .45);
  transform: translateX(4px);
}

/* ---------- 热点问题 ---------- */
.page-faq .faq-questions {
  padding: 48px 0 56px;
  background: linear-gradient(180deg, #0D0F14 0%, #090B0F 100%);
  border-top: 1px solid rgba(184, 184, 208, .12);
  border-bottom: 1px solid rgba(184, 184, 208, .12);
}

.page-faq .faq-questions .section-head {
  margin-bottom: 40px;
}

.page-faq .faq-questions .section-label {
  color: var(--c-red);
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: .18em;
  display: block;
  margin-bottom: 10px;
}

.page-faq .faq-questions .section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 8px;
}

.page-faq .faq-questions .section-desc {
  color: var(--c-silver);
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
}

.page-faq .faq-questions__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-faq .faq-questions__side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-faq .faq-index {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  color: var(--c-white);
  text-decoration: none;
  font-size: 15px;
  border-left: 2px solid rgba(184, 184, 208, .25);
  transition: all .25s var(--ease);
}

.page-faq .faq-index__link:hover {
  border-left-color: var(--c-red);
  background: rgba(230, 57, 70, .06);
}

.page-faq .faq-index__count {
  font-family: var(--font-num);
  font-size: 13px;
  color: var(--c-red);
}

.page-faq .faq-index__note {
  padding: 16px 14px;
  background: rgba(29, 53, 87, .3);
  border: 1px solid rgba(184, 184, 208, .14);
  border-radius: 8px;
}

.page-faq .faq-index__note-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-red);
  margin-bottom: 8px;
  box-shadow: 0 0 12px rgba(230, 57, 70, .7);
  animation: faqPulse 1.6s infinite;
}

@keyframes faqPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .35; }
}

.page-faq .faq-index__note p {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--c-silver);
}

.page-faq .btn-sm {
  padding: 8px 16px;
  font-size: 13px;
  border-radius: var(--radius);
}

.page-faq .btn-ghost {
  background: transparent;
  border: 1px solid rgba(184, 184, 208, .45);
  color: var(--c-white);
  text-decoration: none;
  display: inline-block;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .btn-ghost:hover {
  border-color: var(--c-red);
  color: var(--c-red);
}

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

.page-faq .faq-group {
  margin-bottom: 48px;
}

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

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(184, 184, 208, .14);
}

.page-faq .faq-group__num {
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--c-red);
  background: rgba(230, 57, 70, .1);
  border: 1px solid rgba(230, 57, 70, .28);
  border-radius: 4px;
  padding: 4px 8px;
}

.page-faq .faq-item {
  border-bottom: 1px solid rgba(184, 184, 208, .12);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 12px;
  cursor: pointer;
  list-style: none;
  transition: background-color .25s var(--ease);
}

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

.page-faq .faq-item__summary:hover {
  background: rgba(255, 255, 255, .03);
}

.page-faq .faq-item__num {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-red);
  min-width: 36px;
  flex-shrink: 0;
}

.page-faq .faq-item__question {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-white);
}

.page-faq .faq-item__icon {
  flex-shrink: 0;
  color: var(--c-silver);
  transition: transform .35s var(--ease-out);
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(180deg);
}

.page-faq .faq-item__answer {
  padding: 0 12px 20px 20px;
  color: var(--c-silver);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .faq-item__answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__answer a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-faq .faq-item__answer a:hover {
  color: var(--c-red);
}

/* ---------- 操作指南 ---------- */
.page-faq .faq-guide {
  padding: 48px 0;
  position: relative;
}

.page-faq .faq-guide__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.page-faq .faq-guide__media .media-frame {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(184, 184, 208, .18);
  box-shadow: var(--shadow-panel);
  background: #10141C;
}

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

.page-faq .faq-guide__content .section-label {
  color: var(--c-red);
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: .18em;
  display: block;
  margin-bottom: 10px;
}

.page-faq .faq-guide__content .section-title {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 16px;
}

.page-faq .faq-guide__content p {
  color: var(--c-silver);
  font-size: 15px;
  line-height: 1.75;
  margin: 0 0 24px;
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact {
  padding: 48px 0;
  background: var(--c-blue);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(230, 57, 70, .18), transparent 65%);
  pointer-events: none;
}

.page-faq .faq-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-contact .section-label {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: .18em;
  display: block;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, .75);
}

.page-faq .faq-contact .section-title {
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 12px;
}

.page-faq .faq-contact__desc {
  font-size: 15px;
  line-height: 1.6;
  margin: 0 0 20px;
  color: rgba(255, 255, 255, .8);
}

.page-faq .faq-contact__email {
  font-family: var(--font-num);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-white);
  background: rgba(230, 57, 70, .22);
  border: 1px solid rgba(230, 57, 70, .5);
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  margin: 0 0 12px;
  word-break: break-all;
}

.page-faq .faq-contact__note {
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, .65);
  margin: 0;
}

.page-faq .faq-contact__action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.page-faq .faq-contact__action .btn-primary {
  background: var(--c-red);
  border-color: var(--c-red);
  font-size: 16px;
  padding: 14px 28px;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: background-color .25s var(--ease), transform .2s var(--ease-out);
}

.page-faq .faq-contact__action .btn-primary:hover {
  background: #d32f3d;
  transform: translateY(-2px);
}

.page-faq .faq-contact__hint {
  font-size: 13px;
  color: rgba(255, 255, 255, .55);
  line-height: 1.5;
}

/* ---------- 桌面端增强 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-quicknav__grid {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 40px 0 64px;
  }

  .page-faq .faq-quicknav {
    padding: 72px 0 56px;
  }

  .page-faq .faq-questions {
    padding: 64px 0 72px;
  }

  .page-faq .faq-guide {
    padding: 72px 0;
  }

  .page-faq .faq-contact {
    padding: 72px 0;
  }

  .page-faq .faq-questions__layout {
    grid-template-columns: 220px 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-questions__side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-questions__main {
    border-left: 1px solid rgba(184, 184, 208, .1);
    padding-left: 32px;
  }

  .page-faq .faq-item__answer {
    padding-left: 64px;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 48px;
  }

  .page-faq .faq-contact__action {
    align-items: flex-end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-guide__grid {
    grid-template-columns: 1.05fr 1fr;
    gap: 64px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-questions__layout {
    grid-template-columns: 260px 1fr;
    gap: 64px;
  }

  .page-faq .faq-questions__main {
    padding-left: 48px;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-hero__deco {
    display: none;
  }
}