.page-faq {
  padding-bottom: clamp(48px, 8vw, 104px);
}

.page-faq .crumbs {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.5vw, 54px) 0 clamp(30px, 5vw, 58px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(12, 36, 64, 0.72) 0%, rgba(7, 26, 47, 0) 68%),
    repeating-linear-gradient(90deg, rgba(30, 58, 90, 0.34) 0 1px, transparent 1px 68px),
    repeating-linear-gradient(0deg, rgba(30, 58, 90, 0.2) 0 1px, transparent 1px 68px);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(52vw, 560px);
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--orange));
  pointer-events: none;
}

.page-faq .faq-hero > .wrap {
  position: relative;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 3.5vw, 38px);
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: var(--step-3);
  line-height: 1.03;
  letter-spacing: -0.015em;
  color: var(--ice);
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  color: var(--body-text);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-facts {
  margin: 0;
  border: 1px solid var(--line);
  border-left: 3px solid var(--clay);
  background: rgba(12, 36, 64, 0.78);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--cut));
}

.page-faq .faq-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-facts__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-facts dt {
  color: var(--slate);
  font-size: var(--step--1);
}

.page-faq .faq-facts dd {
  margin: 0;
  color: var(--ice);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-align: right;
}

.page-faq .faq-hero__media {
  margin: clamp(26px, 4vw, 42px) 0 0;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  padding-top: clamp(34px, 5.5vw, 62px);
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clay);
}

.page-faq .faq-index ul {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: max-content;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 14px;
  background: var(--ink-850);
  border: 1px solid var(--line);
  color: var(--body-text);
  text-decoration: none;
  font-size: var(--step--1);
  white-space: nowrap;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  background: var(--ink-800);
  border-color: var(--cyan);
  color: var(--ice);
}

.page-faq .faq-index__num {
  color: var(--clay);
  font-size: 0.82em;
}

.page-faq .faq-main {
  display: grid;
  gap: clamp(34px, 5vw, 56px);
  min-width: 0;
}

.page-faq .faq-block,
.page-faq #support {
  scroll-margin-top: calc(var(--bar-h) + 20px);
  min-width: 0;
}

/* ---------- 章节头 ---------- */
.page-faq .faq-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  align-items: baseline;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-head__idx {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-faq .faq-head__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: var(--step-2);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-faq .faq-head__note {
  grid-column: 2;
  margin: 7px 0 0;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--slate);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--line);
  border-left: 2px solid var(--ink-700);
  background: linear-gradient(180deg, rgba(12, 36, 64, 0.92), rgba(9, 31, 56, 0.92));
  margin-bottom: 10px;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
  transition: border-color 0.2s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--step-1);
  line-height: 1.32;
  color: var(--ice);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15em;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "–";
}

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

.page-faq .faq-item__no {
  flex: none;
  padding-top: 0.28em;
  font-family: var(--font-mono);
  font-size: 0.74em;
  color: var(--clay);
}

.page-faq .faq-item__a {
  padding: 15px 18px 18px;
  border-top: 1px solid var(--line);
  color: var(--body-text);
  font-size: var(--step-0);
  line-height: 1.82;
}

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

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(39, 242, 210, 0.42);
}

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

/* ---------- 步骤编号 ---------- */
.page-faq .steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 12px 0 14px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .steps li {
  position: relative;
  counter-increment: faqstep;
  margin: 0;
  padding: 11px 14px 11px 48px;
  background: var(--ink-850);
  font-size: var(--step--1);
  line-height: 1.68;
  color: var(--body-text);
}

.page-faq .steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 15px;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

/* ---------- 支持区块 ---------- */
.page-faq .faq-support {
  margin-top: clamp(44px, 7vw, 84px);
  padding: clamp(32px, 5vw, 58px) 0;
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(181, 84, 45, 0.1) 0%, rgba(7, 26, 47, 0) 55%),
    repeating-linear-gradient(135deg, rgba(30, 58, 90, 0.24) 0 1px, transparent 1px 22px);
}

.page-faq .faq-support__grid {
  display: grid;
  gap: clamp(24px, 3.5vw, 42px);
}

.page-faq .faq-support__text > p {
  margin: 0 0 20px;
  max-width: 62ch;
  color: var(--body-text);
  font-size: var(--step-0);
  line-height: 1.82;
}

.page-faq .faq-contact {
  margin: 0 0 22px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__k {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-faq .faq-contact__v {
  margin: 0;
  color: var(--ice);
  font-size: var(--step-0);
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .faq-contact__v.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-faq .faq-support__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    align-items: end;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 268px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }

  .page-faq .faq-index ul {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    gap: 3px;
    overflow-x: visible;
  }

  .page-faq .faq-index a {
    padding: 11px 14px;
    border-left: 2px solid var(--line);
    font-size: var(--step-0);
    white-space: normal;
    clip-path: none;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}