.page-faq {
  --faq-cut: 16px;
  background: var(--night);
  color: var(--warm);
  overflow-x: clip;
}

.page-faq section {
  padding-block: 3rem;
}

.page-faq .eyebrow {
  color: var(--cyan);
  letter-spacing: .16em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: 1.25rem 3rem;
  background:
    radial-gradient(120% 90% at 82% -10%, rgba(217, 58, 28, .3), transparent 60%),
    radial-gradient(90% 70% at 0% 100%, rgba(50, 230, 208, .1), transparent 62%),
    var(--night);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 1.5rem;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 2rem;
}

.page-faq .faq-hero__title {
  margin: .6rem 0 0;
  font-size: clamp(2.4rem, 10vw, 5.4rem);
  line-height: .9;
  letter-spacing: -.035em;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--signal);
}

.page-faq .faq-hero__intro {
  margin: 1.4rem 0 0;
  max-width: 36ch;
  font-size: .97rem;
  line-height: 1.85;
  color: var(--concrete);
}

.page-faq .faq-quick {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  max-width: 46ch;
}

.page-faq .faq-quick li {
  position: relative;
  padding: .68rem 0 .68rem 1.5rem;
  border-bottom: 1px solid var(--line);
  font-size: .9rem;
  line-height: 1.65;
  color: var(--warm);
}

.page-faq .faq-quick li::before {
  content: "→";
  position: absolute;
  left: 0;
  top: .68rem;
  color: var(--signal);
  font-weight: 700;
}

.page-faq .faq-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.75rem;
}

.page-faq .faq-hero__fig {
  margin: 0;
}

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

/* ---------- 三步路径 ---------- */
.page-faq .faq-steps {
  background: var(--stand);
  border-block: 1px solid var(--line);
}

.page-faq .faq-steps__head {
  display: flex;
  align-items: baseline;
  gap: .85rem;
  margin-bottom: 1.6rem;
}

.page-faq .faq-steps__head h2 {
  margin: 0;
  font-size: clamp(1.35rem, 5vw, 2.2rem);
  line-height: 1.15;
}

.page-faq .faq-tablist {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: 1px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-tab {
  flex: 1 0 9.5rem;
  display: grid;
  gap: .2rem;
  padding: .85rem .95rem 1rem;
  background: rgba(245, 242, 234, .04);
  border: 1px solid var(--line);
  border-bottom: none;
  color: var(--concrete);
  font-family: inherit;
  text-align: start;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  transition: background .2s var(--ease), color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-tab:hover {
  background: rgba(245, 242, 234, .08);
  color: var(--warm);
}

.page-faq .faq-tab[aria-selected="true"] {
  background: rgba(50, 230, 208, .1);
  color: var(--warm);
  box-shadow: inset 0 3px 0 var(--cyan);
}

.page-faq .faq-tab__num {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--concrete);
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab__num {
  color: var(--cyan);
}

.page-faq .faq-tab__label {
  font-size: .95rem;
  font-weight: 700;
}

.page-faq .faq-tab__hint {
  font-size: .74rem;
  color: var(--concrete);
  opacity: .82;
}

.page-faq .faq-panels {
  margin-top: 1.85rem;
}

.page-faq .faq-panel {
  display: grid;
  gap: 2rem;
}

.page-faq .faq-panel:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .faq-panel__copy .data-text {
  color: var(--signal);
  letter-spacing: .12em;
}

.page-faq .faq-panel__title {
  margin: .55rem 0 .9rem;
  font-size: clamp(1.25rem, 4.6vw, 1.75rem);
  line-height: 1.25;
  font-weight: 700;
}

.page-faq .faq-panel__text {
  margin: 0;
  max-width: 40ch;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--concrete);
}

.page-faq .faq-path {
  list-style: none;
  counter-reset: faqp;
  margin: 1.35rem 0 0;
  padding: 0;
  display: grid;
  gap: .75rem;
  max-width: 44ch;
}

.page-faq .faq-path li {
  display: grid;
  grid-template-columns: 1.9rem 1fr;
  gap: .7rem;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--warm);
}

.page-faq .faq-path li::before {
  counter-increment: faqp;
  content: counter(faqp, decimal-leading-zero);
  padding-top: .22rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-panel__copy .btn {
  margin-top: 1.5rem;
}

.page-faq .faq-phone-wrap {
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

.page-faq .faq-phone {
  width: min(100%, 15.5rem);
  height: auto;
  filter: drop-shadow(0 22px 40px rgba(0, 0, 0, .5));
}

.page-faq .ph-body { fill: #060c18; stroke: var(--line-strong); stroke-width: 2; }
.page-faq .ph-notch { fill: var(--stand); }
.page-faq .ph-screen { fill: #0b1526; }
.page-faq .ph-line { fill: rgba(185, 190, 201, .26); }
.page-faq .ph-line--dim { fill: rgba(185, 190, 201, .13); }
.page-faq .ph-hi { fill: var(--signal); }
.page-faq .ph-cy { fill: var(--cyan); }
.page-faq .ph-arrow {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-toc {
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .9rem;
}

.page-faq .faq-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 44px;
  padding: .4rem .85rem;
  border: 1px solid var(--line-strong);
  color: var(--warm);
  font-size: .85rem;
  font-weight: 700;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

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

.page-faq .faq-toc__list .data-text {
  color: var(--signal);
  font-size: .68rem;
}

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

.page-faq .faq-qa__wrap {
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-qa__aside h2 {
  margin: .45rem 0 .85rem;
  font-size: clamp(1.3rem, 5vw, 2rem);
  line-height: 1.2;
}

.page-faq .faq-qa__note {
  margin: 0;
  max-width: 30ch;
  font-size: .86rem;
  line-height: 1.75;
  color: var(--concrete);
}

.page-faq .faq-qa__body {
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-q summary {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .95rem 0;
  min-height: 44px;
  font-size: .97rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--warm);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q summary::after {
  content: "+";
  margin-inline-start: auto;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
}

.page-faq .faq-q[open] summary::after {
  content: "–";
}

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

.page-faq .faq-answer {
  margin: 0 0 1.15rem;
  max-width: 62ch;
  font-size: .91rem;
  line-height: 1.9;
  color: var(--concrete);
}

.page-faq .faq-qa__fig {
  margin: 0;
}

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

/* ---------- 支持 ---------- */
.page-faq .faq-support {
  background:
    radial-gradient(110% 80% at 100% 0%, rgba(217, 58, 28, .22), transparent 58%),
    var(--night);
}

.page-faq .faq-support__panel {
  background: rgba(20, 33, 61, .78);
  border: 1px solid var(--line-strong);
  padding: 1.6rem 1.15rem;
}

.page-faq .faq-support__grid {
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-support__copy h2 {
  margin: .5rem 0 1rem;
  font-size: clamp(1.35rem, 5vw, 2.1rem);
  line-height: 1.2;
}

.page-faq .faq-support__text {
  margin: 0;
  max-width: 38ch;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--concrete);
}

.page-faq .faq-support__points {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
  max-width: 44ch;
}

.page-faq .faq-support__points li {
  position: relative;
  padding-inline-start: 1.15rem;
  font-size: .87rem;
  line-height: 1.7;
  color: var(--warm);
}

.page-faq .faq-support__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55rem;
  width: .45rem;
  height: .45rem;
  background: var(--signal);
  transform: rotate(45deg);
}

.page-faq .faq-support__copy .btn {
  margin-top: 1.5rem;
}

.page-faq .faq-support__contact {
  border-top: 1px solid var(--line-strong);
  padding-top: 1.4rem;
}

.page-faq .faq-support__contact .data-text {
  color: var(--amber);
  letter-spacing: .1em;
}

.page-faq .faq-support__note {
  margin: .6rem 0 1.2rem;
  font-size: .85rem;
  line-height: 1.75;
  color: var(--concrete);
}

.page-faq .faq-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-faq .faq-contact li {
  display: grid;
  gap: .15rem;
  padding: .7rem 0;
  border-top: 1px solid var(--line);
  font-size: .9rem;
  line-height: 1.6;
  color: var(--warm);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact .data-text {
  color: var(--concrete);
  font-size: .68rem;
  letter-spacing: .16em;
}

.page-faq .faq-support__more {
  margin: 1.15rem 0 0;
  font-size: .83rem;
  line-height: 1.8;
  color: var(--concrete);
}

.page-faq .faq-support__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(50, 230, 208, .45);
}

.page-faq .faq-support__more a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 数据带 ---------- */
.page-faq .data-strip {
  border-top: 1px solid var(--line);
  background: var(--stand);
}

.page-faq .data-strip__track span {
  padding-inline: 1.1rem;
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--concrete);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-support__panel {
    padding: 2.25rem 2rem;
  }
}

@media (min-width: 900px) {
  .page-faq section {
    padding-block: 4.5rem;
  }

  .page-faq .faq-hero {
    padding-block: 1.75rem 4.5rem;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 1.06fr .94fr;
    align-items: center;
    gap: 3rem;
  }

  .page-faq .faq-hero__intro {
    font-size: 1.01rem;
  }

  .page-faq .faq-panel {
    grid-template-columns: 1.15fr .85fr;
    gap: 3rem;
    align-items: start;
  }

  .page-faq .faq-qa__wrap {
    grid-template-columns: 15rem 1fr;
    gap: 3.25rem;
    align-items: start;
  }

  .page-faq .faq-qa__aside {
    position: sticky;
    top: calc(var(--bar-h) + 1.75rem);
    align-self: start;
  }

  .page-faq .faq-qa__body--split {
    grid-template-columns: 1fr 15rem;
    gap: 2.5rem;
    align-items: start;
  }

  .page-faq .faq-support__grid {
    grid-template-columns: 1.1fr .9fr;
    gap: 3rem;
  }

  .page-faq .faq-support__contact {
    border-top: none;
    border-inline-start: 1px solid var(--line-strong);
    padding-top: 0;
    padding-inline-start: 2.25rem;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__title {
    font-size: clamp(3.4rem, 6.6vw, 5.8rem);
  }

  .page-faq .faq-tab {
    flex: 1 1 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .faq-toc__list a {
    transition: none;
  }
}