.page-faq {
  --faq-rail-w: 240px;
  --faq-hair: rgba(169, 155, 209, 0.26);
  padding-bottom: clamp(48px, 8vw, 104px);
  overflow-x: clip;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

.page-faq .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- hero ---------- */
.page-faq .faq-hero {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6.6vw, 74px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.9;
  color: rgba(234, 240, 248, 0.86);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-hero__figure {
  margin: 0;
  min-width: 0;
}

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

/* ---------- ratio bar ---------- */
.page-faq .faq-ratio {
  margin-top: clamp(22px, 3vw, 34px);
  max-width: 40em;
}

.page-faq .faq-ratio__bar {
  display: flex;
  gap: 4px;
  height: 12px;
  margin-top: 10px;
}

.page-faq .faq-ratio__seg {
  display: block;
  min-width: 6px;
  transition: flex-grow 0.32s var(--ease);
}

.page-faq .faq-ratio__seg--a { flex: 5; background: var(--cyan); }
.page-faq .faq-ratio__seg--b { flex: 4; background: var(--mute); }
.page-faq .faq-ratio__seg--c { flex: 4; background: var(--amber); }
.page-faq .faq-ratio__seg--d { flex: 3; background: var(--ink-700); box-shadow: inset 0 0 0 1px var(--line); }

.page-faq .faq-ratio__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ash);
}

.page-faq .faq-ratio__key {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.page-faq .faq-ratio__key b {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .faq-ratio__key::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--ink-700);
}

.page-faq .faq-ratio__key--a::before { background: var(--cyan); }
.page-faq .faq-ratio__key--b::before { background: var(--mute); }
.page-faq .faq-ratio__key--c::before { background: var(--amber); }

/* ---------- 六月版速览 ---------- */
.page-faq .faq-notes {
  margin-top: clamp(30px, 5vw, 58px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(95deg, rgba(53, 230, 218, 0.07), rgba(7, 14, 26, 0) 62%),
              var(--ink-800);
}

.page-faq .faq-notes__inner {
  display: grid;
  gap: 20px;
  padding-block: clamp(20px, 3vw, 28px);
}

.page-faq .faq-notes__item .mono-label {
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-faq .faq-notes__item p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(234, 240, 248, 0.82);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(34px, 6vw, 72px);
  align-items: start;
}

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

.page-faq .faq-rail__stick {
  background: var(--ink-800);
  border: 1px solid var(--line);
  padding: 18px 16px 16px;
  clip-path: var(--cut);
}

.page-faq .faq-rail__list {
  display: grid;
  gap: 2px;
  margin-top: 10px;
}

.page-faq .faq-rail__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  margin: 0;
  background: transparent;
  color: var(--paper);
  border: 0;
  border-left: 2px solid transparent;
  font-family: var(--font-body);
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-rail__btn:hover {
  background: var(--ink-700);
}

.page-faq .faq-rail__btn[aria-pressed="true"] {
  color: var(--cyan);
  background: rgba(53, 230, 218, 0.09);
  border-left-color: var(--cyan);
}

.page-faq .faq-rail__count {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ash);
}

.page-faq .faq-rail__btn[aria-pressed="true"] .faq-rail__count {
  color: var(--cyan);
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.75;
  color: var(--ash);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-list__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-list__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .faq-list__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ash);
}

.page-faq .faq-list__meta span {
  color: var(--amber);
  font-weight: 700;
}

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

.page-faq .faq-item[hidden] {
  display: none;
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: baseline;
  gap: 6px 14px;
  padding: 18px 16px 18px 14px;
  border-left: 3px solid transparent;
  cursor: pointer;
  list-style: none;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.page-faq .faq-item__q:hover {
  background: rgba(22, 36, 58, 0.72);
}

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

.page-faq .faq-item__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

.page-faq .faq-item__text {
  font-size: clamp(16px, 1.6vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-item__tags {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.page-faq .faq-item__cat {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 2px 6px;
  color: var(--ash);
  border: 1px solid var(--line);
}

.page-faq .faq-item__hot {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 2px 6px;
  color: var(--amber);
  border: 1px solid var(--amber-line);
}

.page-faq .faq-item__q::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  align-self: center;
}

.page-faq .faq-item[open] > .faq-item__q {
  background: var(--amber-950);
  border-left-color: var(--amber);
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "−";
  color: var(--amber);
}

.page-faq .faq-item__a {
  padding: 2px 18px 22px 16px;
  border-left: 3px solid transparent;
  max-width: 42em;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(234, 240, 248, 0.84);
}

.page-faq .faq-item__a p + p {
  margin-top: 1em;
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--cyan-line);
}

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

.page-faq .faq-item__a code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  padding: 1px 6px;
  background: var(--teal-950);
  color: var(--cyan);
  border: 1px solid rgba(53, 230, 218, 0.22);
}

/* ---------- 反馈 ---------- */
.page-faq .faq-feedback {
  margin-top: clamp(40px, 7vw, 88px);
  padding-block: clamp(30px, 5vw, 56px);
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-feedback__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

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

.page-faq .faq-feedback h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.24;
  color: var(--paper);
}

.page-faq .faq-feedback__steps {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .faq-feedback__steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(234, 240, 248, 0.8);
}

.page-faq .faq-feedback__steps li b {
  color: var(--paper);
  font-weight: 700;
}

.page-faq .faq-feedback__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--amber);
  padding-top: 3px;
}

.page-faq .faq-feedback__tail {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ash);
}

.page-faq .faq-feedback__tail a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--cyan-line);
}

.page-faq .faq-feedback__figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-feedback__figure img {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  background: var(--ink-700);
  clip-path: var(--cut);
}

.page-faq .faq-feedback__figure .media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ash);
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(40px, 6vw, 76px);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: clamp(22px, 3vw, 44px);
  padding: clamp(20px, 3.4vw, 36px);
  background: linear-gradient(120deg, rgba(53, 230, 218, 0.06), rgba(255, 162, 58, 0.05) 78%, transparent);
  border: 1px solid var(--line);
  clip-path: var(--cut);
}

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

.page-faq .faq-contact__intro h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.26;
  color: var(--paper);
}

.page-faq .faq-contact__intro p {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(234, 240, 248, 0.84);
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-contact__list li {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-contact__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-contact__list .mono-label {
  color: var(--ash);
}

.page-faq .faq-contact__list a,
.page-faq .faq-contact__list span:not(.mono-label),
.page-faq .faq-contact__list button {
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact__list a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--cyan-line);
  justify-self: start;
}

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

.page-faq .faq-contact__list .copy {
  justify-self: start;
  padding: 4px 10px;
  background: var(--teal-950);
  border: 1px solid rgba(53, 230, 218, 0.28);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.03em;
  cursor: pointer;
  text-align: left;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-contact__list .copy:hover {
  background: rgba(53, 230, 218, 0.14);
  border-color: var(--cyan);
}

.page-faq .faq-contact__list .copy:focus-visible,
.page-faq .faq-rail__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-notes__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq .faq-notes__item {
    padding-inline: 22px;
  }

  .page-faq .faq-notes__item:first-child {
    padding-left: 0;
  }

  .page-faq .faq-notes__item:last-child {
    padding-right: 0;
  }

  .page-faq .faq-notes__item + .faq-notes__item {
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-feedback__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 3vw, 44px);
  }

  .page-faq .faq-rail__stick {
    position: sticky;
    top: calc(var(--header-h-compact) + 18px);
  }

  .page-faq .faq-item__q {
    padding: 20px 20px 20px 16px;
  }

  .page-faq .faq-item__a {
    padding: 4px 20px 24px 18px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item__q {
    grid-template-columns: minmax(0, 1fr) auto auto;
    padding: 16px 12px 16px 12px;
  }

  .page-faq .faq-item__idx {
    display: none;
  }

  .page-faq .faq-item__cat {
    font-size: 10px;
  }

  .page-faq .faq-item__hot {
    display: none;
  }

  .page-faq .faq-item__a {
    padding: 2px 14px 20px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__btn,
  .page-faq .faq-item__q,
  .page-faq .faq-ratio__seg,
  .page-faq .faq-contact__list .copy {
    transition-duration: 0.01ms;
  }
}