.page-faq {
  --faq-line: rgba(20, 55, 79, .7);
  --faq-line-soft: rgba(20, 55, 79, .42);
  background: var(--ink-900);
  color: var(--paper);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding: clamp(20px, 4vw, 40px) 0 clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero__frame {
  position: relative;
  margin-top: clamp(16px, 2.5vw, 26px);
  padding: clamp(26px, 5vw, 58px) clamp(20px, 4.5vw, 58px) clamp(22px, 3.5vw, 42px);
  border: 1px solid var(--hair);
  border-radius: var(--radius-l);
  overflow: hidden;
  background:
    radial-gradient(120% 150% at 8% 0%, rgba(0, 232, 210, .12), transparent 56%),
    radial-gradient(90% 130% at 100% 108%, rgba(255, 138, 61, .12), transparent 58%),
    var(--ink-800);
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--hair) 0 1px, transparent 1px 44px);
  opacity: .9;
}

.page-faq .faq-hero__title {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 64ch;
  font-size: clamp(1rem, 1.4vw, 1.075rem);
  line-height: 1.8;
  color: var(--paper-soft);
}

.page-faq .faq-hero__meta {
  list-style: none;
  margin: clamp(26px, 3.5vw, 40px) 0 0;
  padding: clamp(16px, 2.2vw, 22px) 0 0;
  border-top: 1px solid var(--hair);
  display: flex;
  flex-wrap: wrap;
  gap: 10px clamp(20px, 3.5vw, 46px);
  font-size: 14px;
  color: var(--mist);
}

.page-faq .faq-hero__meta-item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

/* ---------- 左轴右流布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(56px, 8vw, 100px);
}

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

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  border-top: 1px solid var(--hair);
  padding-top: 10px;
  scrollbar-width: thin;
}

.page-faq .faq-toc__item {
  flex: none;
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  min-height: 44px;
  padding: 12px 8px;
  border-bottom: 2px solid transparent;
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-toc__num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ink-700);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible,
.page-faq .faq-toc__link.is-current {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-toc__link.is-current .faq-toc__num {
  color: var(--cyan);
}

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

/* ---------- 章节 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-section {
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--faq-line);
  margin-top: clamp(36px, 5vw, 68px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-flow > .faq-section:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-section__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-faq .faq-section__lede {
  margin: 12px 0 clamp(22px, 3vw, 32px);
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 三分钟上手 ---------- */
.page-faq .startmap {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-faq .startmap__svg {
  display: block;
  width: 100%;
  height: 68px;
  margin-bottom: 12px;
}

.page-faq .sm-line {
  stroke: var(--faq-line);
  stroke-width: 2;
}

.page-faq .sm-tick {
  stroke: var(--faq-line-soft);
  stroke-width: 1;
}

.page-faq .sm-node {
  fill: var(--ink-900);
  stroke: var(--cyan);
  stroke-width: 2;
}

.page-faq .sm-node--now {
  fill: var(--cyan);
}

.page-faq .sm-node--end {
  stroke: var(--orange);
}

.page-faq .steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
}

.page-faq .steps__item {
  position: relative;
  padding: 0 0 clamp(20px, 3vw, 28px) 46px;
}

.page-faq .steps__item::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .04em;
}

.page-faq .steps__item::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 36px;
  bottom: 4px;
  width: 1px;
  background: var(--faq-line-soft);
}

.page-faq .steps__item:last-child {
  padding-bottom: 6px;
}

.page-faq .steps__item:last-child::after {
  display: none;
}

.page-faq .steps__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.12rem;
  color: var(--paper);
}

.page-faq .steps__item p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--paper-soft);
}

.page-faq .startmap__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.5vw, 26px);
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa-list {
  display: block;
}

.page-faq .qa {
  position: relative;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13, 39, 64, 0), rgba(13, 39, 64, .92));
  opacity: 0;
  transition: opacity .28s var(--ease);
  pointer-events: none;
}

.page-faq .qa[open]::before {
  opacity: 1;
}

.page-faq .qa > * {
  position: relative;
  z-index: 1;
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-height: 44px;
  padding: 18px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.04rem, 2.1vw, 1.3rem);
  line-height: 1.42;
  color: var(--paper);
}

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

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

.page-faq .qa__num {
  flex: none;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .qa__text {
  flex: 1 1 auto;
}

.page-faq .qa__icon {
  flex: none;
  position: relative;
  align-self: center;
  width: 14px;
  height: 14px;
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  background: var(--orange);
}

.page-faq .qa__icon::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .qa__icon::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  transition: transform .25s var(--ease);
}

.page-faq .qa[open] .qa__icon::after {
  transform: scaleY(0);
}

.page-faq .qa__a {
  padding: 0 4px clamp(20px, 2.6vw, 26px);
  max-width: 68ch;
  color: var(--paper-soft);
  font-size: 15.5px;
  line-height: 1.8;
  animation: faq-fade .28s var(--ease) both;
}

.page-faq .qa__a p {
  margin: 0 0 .85em;
}

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 232, 210, .42);
}

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

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

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--hair);
  border-radius: var(--radius-m);
}

.page-faq .faq-figure--tall img {
  aspect-ratio: 4 / 5;
  object-position: center top;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 日历章节分栏 ---------- */
.page-faq .cal-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

/* ---------- 提示块 ---------- */
.page-faq .faq-tip {
  margin-top: clamp(24px, 3vw, 34px);
  padding: clamp(18px, 2.6vw, 24px) clamp(18px, 2.6vw, 26px);
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(255, 138, 61, .08);
}

.page-faq .faq-tip__title {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--orange-soft);
}

.page-faq .faq-tip p:last-child {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--paper-soft);
}

/* ---------- 结尾 ---------- */
.page-faq .faq-section--last {
  padding-bottom: clamp(8px, 2vw, 18px);
}

.page-faq .support-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(8px, 2vw, 16px);
}

/* ---------- 断点 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 228px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
  }

  .page-faq .faq-toc__inner {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-toc__title {
    margin-bottom: 14px;
  }

  .page-faq .faq-toc__list {
    display: block;
    border-top: 0;
    border-left: 1px solid var(--hair);
    padding-top: 0;
    overflow: visible;
  }

  .page-faq .faq-toc__link {
    margin-left: -1px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 11px 12px;
    white-space: normal;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible,
  .page-faq .faq-toc__link.is-current {
    border-bottom-color: transparent;
    border-left-color: var(--cyan);
  }

  .page-faq .startmap {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: clamp(32px, 4vw, 56px);
  }
}

@media (min-width: 900px) {
  .page-faq .cal-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero__frame {
    padding-right: clamp(58px, 6vw, 88px);
  }

  .page-faq .qa__q {
    padding-right: 28px;
  }
}

@media (max-width: 600px) {
  .page-faq .faq-hero__frame {
    border-radius: var(--radius-m);
  }

  .page-faq .steps__item {
    padding-left: 40px;
  }

  .page-faq .qa__q {
    gap: 10px;
  }

  .page-faq .startmap__svg {
    height: 52px;
  }

  .page-faq .support-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }

  .page-faq .qa__icon::after,
  .page-faq .qa::before,
  .page-faq .faq-toc__link {
    transition: none;
  }
}