/* ===== 页面：新手答疑 ===== */
.page-faq {
  --faq-hero-pad: clamp(34px, 6vw, 68px);
  --faq-gap-lg: clamp(48px, 7vw, 88px);
  --faq-gap-md: clamp(28px, 4vw, 48px);
  --faq-rule: rgba(242, 237, 228, 0.14);
  --faq-rule-strong: rgba(242, 237, 228, 0.28);
  --faq-anchor-offset: 150px;
  background: var(--ink);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: var(--faq-hero-pad) 0 clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 62% 74% at 88% 8%, rgba(63, 224, 208, 0.18), transparent 62%),
    linear-gradient(122deg, transparent 60%, rgba(201, 123, 90, 0.13) 60%, rgba(201, 123, 90, 0.13) 75%, transparent 75%),
    linear-gradient(165deg, rgba(127, 163, 122, 0.11) 0%, transparent 44%);
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 34px);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__intro {
  margin: 0 0 20px;
  max-width: 44ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--text-dim);
}

.page-faq .faq-hero__facts .mono {
  color: var(--cyan);
  font-size: 15px;
  margin-right: 4px;
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 4fr;
    align-items: end;
    gap: clamp(30px, 5vw, 76px);
  }
  .page-faq .faq-hero__aside {
    padding-bottom: 10px;
  }
}

/* ---------- 入门四步 ---------- */
.page-faq .faq-steps {
  padding-top: var(--faq-gap-lg);
  padding-bottom: var(--faq-gap-lg);
}

.page-faq .step-list {
  display: grid;
  gap: 2px;
  margin: var(--faq-gap-md) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 6px 16px;
  padding: clamp(18px, 2.6vw, 26px) clamp(16px, 3vw, 30px);
  background: var(--ink-2);
  border-left: 2px solid var(--faq-rule-strong);
  transition: background 260ms var(--ease), border-color 260ms var(--ease);
}

.page-faq .step:hover {
  border-left-color: var(--moss);
}

.page-faq .step:has(.step__check:checked) {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(63, 224, 208, 0.09), rgba(19, 41, 74, 0.9) 62%);
}

.page-faq .step__check {
  width: 22px;
  height: 22px;
  margin: 4px 0 0;
  accent-color: var(--cyan);
  cursor: pointer;
  flex: none;
}

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

.page-faq .step__label {
  display: block;
  cursor: pointer;
}

.page-faq .step__num {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .step__title {
  display: block;
  margin-bottom: 6px;
  font-size: clamp(19px, 2.4vw, 22px);
  font-weight: 500;
  line-height: 1.3;
  color: var(--text);
  transition: color 240ms var(--ease);
}

.page-faq .step__desc {
  display: block;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-faq .step__check:checked ~ .step__label .step__title {
  color: var(--rock);
  text-decoration: line-through;
  text-decoration-color: var(--cyan);
  text-decoration-thickness: 2px;
}

.page-faq .step__check:checked ~ .step__label .step__num {
  color: var(--moss);
}

/* ---------- 问题分类 ---------- */
.page-faq .faq-map {
  padding-top: var(--faq-gap-lg);
  padding-bottom: var(--faq-gap-lg);
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}

.page-faq .faq-map__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-map__intro .section__lead {
  margin-bottom: clamp(20px, 3vw, 30px);
}

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

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--faq-rule-strong);
  background: rgba(242, 237, 228, 0.04);
  color: var(--text);
  font-size: 15px;
  line-height: 1.4;
  text-decoration: none;
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  transform: translateY(-2px);
  background: rgba(242, 237, 228, 0.09);
}

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

.page-faq .faq-chip__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
  background: var(--cyan);
}

.page-faq .faq-chip--cyan { border-color: rgba(63, 224, 208, 0.4); }
.page-faq .faq-chip--cyan .faq-chip__dot { background: var(--cyan); }
.page-faq .faq-chip--moss { border-color: rgba(127, 163, 122, 0.45); }
.page-faq .faq-chip--moss .faq-chip__dot { background: var(--moss); }
.page-faq .faq-chip--orange { border-color: rgba(255, 138, 61, 0.45); }
.page-faq .faq-chip--orange .faq-chip__dot { background: var(--orange); }
.page-faq .faq-chip--clay { border-color: rgba(201, 123, 90, 0.5); }
.page-faq .faq-chip--clay .faq-chip__dot { background: var(--clay); }
.page-faq .faq-chip--magenta { border-color: rgba(255, 77, 141, 0.45); }
.page-faq .faq-chip--magenta .faq-chip__dot { background: var(--magenta); }

@media (min-width: 900px) {
  .page-faq .faq-map__grid {
    grid-template-columns: 7fr 4fr;
  }
}

/* ---------- 左侧目录 + 右侧问答 ---------- */
.page-faq .faq-body {
  padding-top: var(--faq-gap-lg);
  padding-bottom: var(--faq-gap-lg);
  background: var(--ink);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(30px, 5vw, 60px);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  font-size: 15px;
  line-height: 1.4;
  color: var(--text-dim);
  text-decoration: none;
  border-left: 2px solid var(--faq-rule);
  transition: color 220ms var(--ease), border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-faq .faq-index__link .mono {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--rock);
  transition: color 220ms var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
  background: rgba(63, 224, 208, 0.07);
}

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

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

.page-faq .faq-index__hint {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--faq-rule);
  font-size: 14px;
  line-height: 1.7;
  color: var(--rock);
}

@media (min-width: 980px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 3fr 8fr;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 140px;
  }
  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }
  .page-faq .faq-index__link {
    display: flex;
    width: 100%;
  }
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: var(--faq-anchor-offset);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(46px, 6vw, 76px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--faq-rule-strong);
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  flex: none;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .qa__q {
  position: relative;
  display: block;
  padding: 20px 46px 20px 22px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color 220ms var(--ease);
}

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

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: var(--faq-rule-strong);
  transition: background 240ms var(--ease);
}

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--rock);
  transition: color 240ms var(--ease);
}

.page-faq .qa__q:hover {
  color: var(--cyan);
}

.page-faq .qa__q:hover::before {
  background: var(--moss);
}

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

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

.page-faq .qa[open] .qa__q::before {
  background: var(--cyan);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .qa__a {
  padding: 0 46px 22px 22px;
  font-size: 16px;
  line-height: 1.76;
  color: var(--text-dim);
  animation: faqQaIn 280ms var(--ease) both;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  max-width: 62ch;
}

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

.page-faq .qa__steps {
  display: grid;
  gap: 10px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .qa__steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 16px;
  line-height: 1.7;
  counter-increment: faqstep;
}

.page-faq .qa__steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

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

/* ---------- 换机专题 ---------- */
.page-faq .switch-block {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin: 22px 0 8px;
  padding: clamp(20px, 3.4vw, 34px);
  background: linear-gradient(140deg, var(--ink-3) 0%, var(--ink-2) 62%, rgba(201, 123, 90, 0.16) 100%);
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-faq .switch-block__media {
  margin: 0;
}

.page-faq .switch-block__title {
  margin: 10px 0 18px;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 400;
  line-height: 1.35;
  color: var(--text);
}

.page-faq .switch-flow {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .switch-flow__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-faq .switch-flow__idx {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  padding-top: 2px;
}

.page-faq .switch-flow__text strong {
  color: var(--text);
  font-weight: 500;
}

@media (min-width: 760px) {
  .page-faq .switch-block {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: center;
  }
}

/* ---------- 兜底与联系 ---------- */
.page-faq .faq-help {
  padding-top: var(--faq-gap-lg);
  padding-bottom: var(--faq-gap-lg);
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-3) 100%);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-help__lead {
  max-width: 58ch;
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.76;
  color: var(--text-dim);
}

.page-faq .faq-help__cards {
  display: grid;
  gap: 16px;
  margin: clamp(26px, 4vw, 40px) 0 0;
}

.page-faq .faq-help__card {
  padding: clamp(20px, 3vw, 28px);
}

.page-faq .faq-help__card-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-help__card-value {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.4;
  color: var(--cream);
  word-break: break-word;
}

.page-faq .faq-help__card-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-faq .faq-help__note {
  max-width: 58ch;
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--magenta);
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.5vw, 34px);
}

@media (min-width: 760px) {
  .page-faq .faq-help__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 559px) {
  .page-faq .qa__q {
    padding-right: 38px;
    padding-left: 18px;
    font-size: 16px;
  }
  .page-faq .qa__a {
    padding-right: 18px;
    padding-left: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }
  .page-faq .step,
  .page-faq .faq-chip,
  .page-faq .qa__q,
  .page-faq .qa__q::before,
  .page-faq .qa__q::after,
  .page-faq .faq-index__link {
    transition: none;
  }
  .page-faq .faq-chip:hover {
    transform: none;
  }
}