.page-faq {
  --faq-cut: 14px;
  background: var(--paper);
  color: var(--charcoal);
}

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

.page-faq .breadcrumb {
  color: rgba(247, 250, 248, .68);
  margin-bottom: 14px;
}

.page-faq .breadcrumb a {
  color: rgba(247, 250, 248, .82);
  text-decoration: none;
}

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

.page-faq .breadcrumb__sep {
  color: rgba(143, 252, 232, .55);
  margin: 0 6px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4.6vw, 48px) 0 clamp(52px, 9vw, 96px);
  color: var(--paper);
  background:
    radial-gradient(78% 120% at 100% 0%, rgba(47, 243, 208, .20) 0%, rgba(47, 243, 208, 0) 62%),
    linear-gradient(152deg, var(--ink) 0%, var(--ink-3) 52%, var(--ink-2) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: auto -8% -1px -8%;
  height: clamp(34px, 6vw, 74px);
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: start;
}

.page-faq .faq-hero .eyebrow {
  color: var(--cyan-soft);
  margin-bottom: 10px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.12;
  letter-spacing: -.02em;
  margin: 0 0 16px;
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(14px, 1.7vw, 16px);
  line-height: 1.85;
  color: rgba(247, 250, 248, .78);
}

.page-faq .faq-hero__figure {
  margin: 0;
  padding: 6px;
  background: linear-gradient(158deg, rgba(47, 243, 208, .42), rgba(11, 42, 36, .55));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-hero__figure img {
  width: 100%;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  object-fit: cover;
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(20px, 3.4vw, 32px);
  background: rgba(143, 252, 232, .2);
  border: 1px solid rgba(143, 252, 232, .2);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background: rgba(11, 42, 36, .78);
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-faq .faq-stat__num--amber {
  color: var(--amber);
}

.page-faq .faq-stat__unit {
  font-size: .58em;
  margin-left: 1px;
}

.page-faq .faq-stat__label {
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: .06em;
  color: rgba(247, 250, 248, .62);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-main {
  padding-block: clamp(32px, 5.4vw, 68px);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-faq .faq-toc {
  padding: 20px 18px 22px;
  background: var(--ink);
  color: var(--paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-toc .eyebrow {
  color: var(--cyan-soft);
  margin-bottom: 12px;
}

.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: 11px 8px;
  border-bottom: 1px solid rgba(143, 252, 232, .16);
  color: rgba(247, 250, 248, .84);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--cyan);
  background: rgba(47, 243, 208, .09);
  outline: none;
}

.page-faq .faq-toc__link:focus-visible {
  box-shadow: inset 0 0 0 2px var(--amber);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-faq .faq-toc__tip {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: rgba(247, 250, 248, .5);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 5vw, 56px);
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 14px;
  margin-bottom: 14px;
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--ink-2) 100%);
}

.page-faq .faq-group__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--steel);
}

.page-faq .faq-group h2 {
  margin: 4px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.2vw, 29px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-group__intro {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: #45554f;
}

.page-faq .faq-list {
  border-top: 1px solid var(--line-light);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line-light);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item:nth-of-type(even) {
  background: rgba(232, 228, 220, .5);
}

.page-faq .faq-item[open] {
  background: rgba(47, 243, 208, .07);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.55;
  color: var(--ink);
}

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

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -3px;
}

.page-faq .faq-item__idx {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--steel);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: none;
  margin-left: auto;
  width: 24px;
  height: 24px;
  background: rgba(47, 243, 208, .22);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--ink);
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::before {
  width: 11px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 11px;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(.2);
}

.page-faq .faq-item__a {
  padding: 0 16px 18px;
  animation: faq-open var(--dur) var(--ease);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: #3b4b46;
}

.page-faq .faq-item__a p + p {
  margin-top: 10px;
}

.page-faq .faq-item__a a {
  color: var(--ink-2);
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-all;
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(38px, 6vw, 76px);
  padding-block: clamp(30px, 5vw, 56px);
  color: var(--paper);
  background:
    radial-gradient(90% 130% at 0% 0%, rgba(47, 243, 208, .16) 0%, rgba(47, 243, 208, 0) 58%),
    linear-gradient(158deg, var(--ink) 0%, var(--ink-3) 58%, var(--ink-2) 100%);
  clip-path: polygon(0 18px, 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-contact__inner {
  display: grid;
  gap: clamp(20px, 4vw, 40px);
  align-items: start;
}

.page-faq .faq-contact .eyebrow {
  color: var(--cyan-soft);
  margin-bottom: 8px;
}

.page-faq .faq-contact h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.15;
  letter-spacing: -.02em;
}

.page-faq .faq-contact__lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(14px, 1.7vw, 16px);
  line-height: 1.85;
  color: rgba(247, 250, 248, .8);
}

.page-faq .faq-channels {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(143, 252, 232, .2);
  border: 1px solid rgba(143, 252, 232, .2);
}

.page-faq .faq-channels li {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  background: rgba(11, 42, 36, .82);
}

.page-faq .faq-channels li span:first-child {
  font-size: 11px;
  letter-spacing: .1em;
  color: rgba(143, 252, 232, .82);
}

.page-faq .faq-channels li span:last-child {
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.6vw, 15px);
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-channels a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 208, .45);
  word-break: break-all;
}

.page-faq .faq-channels a:hover,
.page-faq .faq-channels a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
  outline: none;
}

.page-faq .faq-contact__note {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(247, 250, 248, .58);
}

.page-faq .faq-contact__figure {
  margin: 0;
  padding: 5px;
  background: linear-gradient(150deg, rgba(47, 243, 208, .4), rgba(11, 42, 36, .2));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-faq .faq-contact__figure img {
  width: 100%;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-item__q {
    padding: 17px 18px;
  }

  .page-faq .faq-item__a {
    padding: 0 18px 20px 46px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(200px, 264px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    animation: none !important;
    transition: none !important;
  }
}