/* ============================================================
   使用指南 · page-faq
   ============================================================ */

.page-faq {
  --faq-line: rgba(51, 56, 62, .18);
  --faq-line-dark: rgba(228, 230, 232, .14);
  --faq-card: rgba(255, 255, 255, .66);
  --faq-card-open: rgba(255, 255, 255, .94);
  --faq-read: #4A5057;
  display: block;
  background: var(--c-paper);
  color: var(--ink-body);
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--c-flame);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(34px, 6vw, 84px) 0 clamp(34px, 5vw, 70px);
  color: var(--on-dark);
  background: linear-gradient(168deg, #14161A 0%, #22262B 56%, #1B2A3A 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(228, 230, 232, .055) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(228, 230, 232, .04) 0 1px, transparent 1px 92px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -26%;
  width: 56vw;
  height: 56vw;
  max-width: 620px;
  max-height: 620px;
  border: 1px solid rgba(226, 102, 42, .26);
  transform: rotate(26deg);
  pointer-events: none;
}

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

.page-faq .faq-hero__crumb {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero .breadcrumb__link,
.page-faq .faq-hero .breadcrumb__current {
  color: var(--on-dark-dim);
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--c-flame);
}

.page-faq .faq-hero .breadcrumb__sep {
  color: var(--on-dark-faint);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 60px);
  align-items: start;
}

.page-faq .faq-hero__kicker {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: .3em;
  color: var(--c-flame);
}

.page-faq .faq-hero__kicker-line {
  flex: 1;
  max-width: 120px;
  height: 1px;
  background: rgba(226, 102, 42, .5);
}

.page-faq .faq-hero__kicker .annotation {
  color: var(--on-dark-faint);
}

.page-faq .faq-hero__title {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  font-size: clamp(32px, 5.6vw, 66px);
  line-height: 1.1;
  color: var(--on-dark);
}

.page-faq .faq-hero__lead {
  margin: 0 0 clamp(24px, 3vw, 36px);
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--on-dark-dim);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__stats {
  display: grid;
  gap: 1px;
  background: rgba(228, 230, 232, .14);
  border: 1px solid rgba(228, 230, 232, .14);
}

.page-faq .faq-stat {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  background: rgba(20, 22, 26, .72);
}

.page-faq .faq-stat__num {
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1;
  color: var(--c-flame);
}

.page-faq .faq-stat__label {
  font-size: 13px;
  line-height: 1.7;
  color: var(--on-dark-dim);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(260px, .6fr);
  }
}

/* ---------- 目录跳转条 ---------- */

.page-faq .faq-jump {
  background: var(--c-ink);
  border-bottom: 1px solid rgba(226, 102, 42, .36);
}

.page-faq .faq-jump__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-jump__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 20px;
  white-space: nowrap;
  font-size: 13.5px;
  color: var(--on-dark-dim);
  text-decoration: none;
  border-right: 1px solid var(--faq-line-dark);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-jump__no {
  font-size: 12px;
  color: var(--c-mid);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-jump__link:hover {
  color: var(--on-dark);
  background: rgba(226, 102, 42, .12);
}

.page-faq .faq-jump__link:hover .faq-jump__no {
  color: var(--c-flame);
}

/* ---------- 章节底色 ---------- */

.page-faq .faq-section--paper { background: var(--c-paper); }
.page-faq .faq-section--stone { background: var(--c-stone); }
.page-faq .faq-section--deep {
  background: var(--c-deep);
  color: var(--on-dark);
}

/* ---------- 章节标题 ---------- */

.page-faq .faq-head {
  max-width: 68ch;
  margin-bottom: clamp(22px, 3vw, 36px);
  padding-top: 16px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-head__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--c-flame);
}

.page-faq .faq-head__line {
  width: 46px;
  height: 1px;
  background: var(--c-flame);
  opacity: .6;
}

.page-faq .faq-head__kicker .annotation {
  color: var(--c-mid);
}

.page-faq .faq-head__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.22;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--c-ink);
}

.page-faq .faq-head__sub {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-read);
}

.page-faq .faq-section--deep .faq-head {
  border-top-color: var(--faq-line-dark);
}

.page-faq .faq-section--deep .faq-head__title { color: var(--on-dark); }
.page-faq .faq-section--deep .faq-head__sub { color: var(--on-dark-dim); }
.page-faq .faq-section--deep .faq-head__kicker .annotation { color: var(--on-dark-faint); }

/* ---------- 问答折叠面板 ---------- */

.page-faq .faq-list {
  max-width: 74ch;
}

.page-faq .qa {
  position: relative;
  margin-bottom: 8px;
  border: 1px solid var(--faq-line);
  background: var(--faq-card);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .qa__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 0;
  padding: 15px clamp(14px, 2vw, 22px);
  list-style: none;
  cursor: pointer;
  font-size: clamp(15px, 1.5vw, 16.5px);
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink-body);
}

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

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 2px;
  width: 0;
  background: var(--c-flame);
  transition: width 240ms var(--ease);
}

.page-faq .qa__idx {
  flex: none;
  padding-top: 3px;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--c-mid);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa__text { display: block; }

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin: 5px 0 0 auto;
  color: var(--c-mid);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: currentColor;
  transition: transform 240ms var(--ease), opacity 240ms var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1.5px;
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1.5px;
}

.page-faq .qa__a {
  padding: 0 clamp(14px, 2vw, 22px) 18px;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-read);
}

.page-faq .qa:hover {
  border-color: rgba(226, 102, 42, .38);
}

.page-faq .qa[open] {
  border-color: rgba(226, 102, 42, .62);
  background: var(--faq-card-open);
}

.page-faq .qa[open] .qa__q::before { width: 100%; }
.page-faq .qa[open] .qa__q { color: var(--c-ink); }
.page-faq .qa[open] .qa__idx { color: var(--c-flame); }
.page-faq .qa[open] .qa__mark { color: var(--c-flame); }
.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

/* 深色数据章节里的面板 */

.page-faq .faq-section--deep .qa {
  background: rgba(228, 230, 232, .045);
  border-color: var(--faq-line-dark);
}

.page-faq .faq-section--deep .qa__q { color: var(--on-dark); }

.page-faq .faq-section--deep .qa__idx { color: var(--on-dark-faint); }
.page-faq .faq-section--deep .qa__mark { color: var(--on-dark-faint); }
.page-faq .faq-section--deep .qa__a p { color: var(--on-dark-dim); }

.page-faq .faq-section--deep .qa[open] {
  background: rgba(228, 230, 232, .085);
  border-color: rgba(226, 102, 42, .62);
}

.page-faq .faq-section--deep .qa[open] .qa__q { color: var(--on-dark); }
.page-faq .faq-section--deep .qa[open] .qa__mark { color: var(--c-flame); }

/* ---------- 步骤流程条 ---------- */

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  list-style: none;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-steps__item {
  display: grid;
  gap: 8px;
  padding: 16px 18px 18px;
  background: var(--c-paper);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-steps__item:hover {
  background: var(--wash-flame);
}

.page-faq .faq-steps__no {
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--c-flame);
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-body);
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ---------- 日期轴示意 ---------- */

.page-faq .faq-axis {
  margin: 0 0 clamp(22px, 3vw, 34px);
  padding: 18px 2px 14px;
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  overflow-x: auto;
  background: linear-gradient(180deg, rgba(226, 102, 42, .04), transparent 70%);
}

.page-faq .faq-axis__ticks {
  display: flex;
  gap: clamp(20px, 3vw, 44px);
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: max-content;
}

.page-faq .faq-axis__tick {
  position: relative;
  display: grid;
  gap: 6px;
  padding-top: 18px;
  white-space: nowrap;
  font-size: 12.5px;
  color: var(--c-mid);
}

.page-faq .faq-axis__tick::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 10px;
  background: var(--c-brick);
  transition: background-color var(--dur) var(--ease), height var(--dur) var(--ease);
}

.page-faq .faq-axis__tick:hover::before {
  background: var(--c-flame);
  height: 14px;
}

.page-faq .faq-axis__day {
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .faq-axis__tick--now {
  color: var(--c-flame);
}

.page-faq .faq-axis__tick--now::before {
  height: 18px;
  background: var(--c-flame);
}

/* ---------- 配图 ---------- */

.page-faq .faq-shot {
  margin: clamp(24px, 3vw, 36px) 0 0;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--faq-line);
  background: var(--c-stone);
}

.page-faq .faq-shot figcaption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 2px solid var(--c-flame);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--c-mid);
}

@media (min-width: 860px) {
  .page-faq .faq-shot--narrow {
    max-width: 720px;
  }
}

/* ---------- 延伸链接 ---------- */

.page-faq .faq-more {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 14.5px;
}

.page-faq .faq-more .link-arrow {
  color: var(--c-flame);
}

.page-faq .faq-more--dark .link-arrow {
  color: var(--c-ember);
}

/* ---------- 联络信息 ---------- */

.page-faq .faq-contact {
  margin-top: clamp(24px, 3vw, 36px);
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--c-flame);
  background: rgba(255, 255, 255, .62);
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 15px clamp(14px, 2vw, 22px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-contact__row:last-of-type {
  border-bottom: 0;
}

.page-faq .faq-contact__label {
  color: var(--c-mid);
}

.page-faq .faq-contact__value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-ink);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 0;
  padding: 14px clamp(14px, 2vw, 22px);
  border-top: 1px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-read);
  background: var(--wash-flame);
}

@media (min-width: 720px) {
  .page-faq .faq-contact__row {
    grid-template-columns: 132px 1fr;
    align-items: baseline;
    gap: 18px;
  }
}
<<<END>>>