.page-faq {
  --faq-rail: 220px;
  background: var(--ink-green);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: clamp(56px, 8vw, 112px);
  overflow-x: hidden;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq a {
  color: inherit;
}

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

.page-faq .wrap {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(24px, 4vw, 48px) clamp(40px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -30%;
  right: -18%;
  width: min(820px, 128%);
  height: 175%;
  background:
    linear-gradient(148deg, rgba(198, 255, 61, 0.09) 0%, rgba(28, 58, 49, 0.92) 44%, rgba(18, 21, 20, 0) 80%);
  transform: skewX(-14deg) skewY(-4deg);
  pointer-events: none;
}

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

.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cool-gray);
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-faq .faq-crumbs a {
  color: var(--cool-gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-crumbs__sep {
  color: var(--line);
}

.page-faq .faq-hero__inner {
  max-width: 46rem;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 5.4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 56px);
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stats div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__stats dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cool-gray);
}

.page-faq .faq-hero__stats dd {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 32px);
  line-height: 1.1;
  color: var(--lime);
}

/* ---------- 通用标题 ---------- */
.page-faq .faq-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-p {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 快速排查 ---------- */
.page-faq .faq-triage {
  padding-block: clamp(44px, 6vw, 84px);
  border-bottom: 1px solid var(--line);
}

.page-faq .triage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-faq .triage-list {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .triage-list li {
  background: var(--teal);
}

.page-faq .triage-list a {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 20px;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .triage-list a:hover {
  background: var(--carbon);
}

.page-faq .triage-list__n {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  line-height: 1.6;
  color: var(--lime);
}

.page-faq .triage-list__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .triage-list__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-faq .triage-list a:hover .triage-list__title {
  color: var(--lime);
}

.page-faq .triage-list__hint {
  font-size: 13px;
  line-height: 1.7;
  color: var(--cool-gray);
}

.page-faq .triage-figure {
  margin: 0;
}

.page-faq .triage-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  filter: saturate(0.72);
}

.page-faq .triage-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--cool-gray);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-block: clamp(40px, 6vw, 80px);
}

.page-faq .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cool-gray);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  color: var(--cool-gray);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover {
  border-color: var(--lime);
  color: var(--lime);
}

.page-faq .faq-index__n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--lime);
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-group {
  padding-block: 0 clamp(26px, 4vw, 44px);
}

.page-faq .qa-group + .qa-group {
  border-top: 1px solid var(--line);
  padding-top: clamp(26px, 4vw, 44px);
}

.page-faq .qa-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: clamp(14px, 2vw, 20px);
}

.page-faq .qa-group__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1;
  color: var(--lime);
}

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

.page-faq .qa:last-of-type {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa summary {
  position: relative;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 40px 18px 0;
  cursor: pointer;
  list-style: none;
  transition: padding-left var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

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

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  top: 16px;
  right: 2px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--lime-dark);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa summary:hover::after {
  color: var(--lime);
}

.page-faq .qa[open] summary {
  box-shadow: inset 3px 0 0 var(--lime);
  padding-left: 14px;
}

.page-faq .qa[open] summary::after {
  content: "–";
  color: var(--lime);
}

.page-faq .qa__num {
  flex: 0 0 auto;
  min-width: 34px;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--cool-gray);
}

.page-faq .qa__q {
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa summary:hover .qa__q {
  color: var(--lime);
}

.page-faq .qa__a {
  margin: 0;
  padding: 0 0 22px 48px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .qa__a a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, 0.45);
  transition: border-color var(--dur) var(--ease);
}

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

.page-faq .qa-figure {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-faq .qa-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  filter: saturate(0.72);
}

.page-faq .qa-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.7;
  color: var(--cool-gray);
}

/* ---------- 人工协助面板 ---------- */
.page-faq .faq-contact {
  padding-top: clamp(8px, 2vw, 24px);
}

.page-faq .contact-panel {
  background: var(--paper);
  color: var(--ink-green);
  border-left: 6px solid var(--lime);
  padding: clamp(24px, 4vw, 52px);
}

.page-faq .contact-panel__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--lime-dark);
}

.page-faq .contact-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink-green);
}

.page-faq .contact-panel__lead {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: #2b3f37;
}

.page-faq .contact-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  background: rgba(11, 31, 26, 0.16);
  border: 1px solid rgba(11, 31, 26, 0.16);
}

.page-faq .contact-list div {
  background: var(--paper);
  padding: 16px 18px;
}

.page-faq .contact-list dt {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: #5b6f66;
}

.page-faq .contact-list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--ink-green);
  overflow-wrap: anywhere;
}

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

.page-faq .faq-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-btn--solid {
  background: var(--ink-green);
  color: var(--paper);
}

.page-faq .faq-btn--solid:hover {
  background: var(--lime);
  color: var(--ink-green);
}

.page-faq .faq-btn--line {
  border-color: rgba(11, 31, 26, 0.32);
  color: var(--ink-green);
}

.page-faq .faq-btn--line:hover {
  border-color: var(--ink-green);
  background: rgba(11, 31, 26, 0.07);
}

.page-faq .contact-panel a:focus-visible {
  outline-color: var(--ink-green);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .contact-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .triage-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-index__list li {
    flex: none;
  }

  .page-faq .faq-index__list a {
    display: flex;
    border: 0;
    border-bottom: 1px solid var(--line);
    padding: 13px 0 13px 16px;
    font-size: 14px;
    white-space: normal;
    color: var(--paper);
    position: relative;
  }

  .page-faq .faq-index__list a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 3px;
    height: 18px;
    background: var(--lime);
    transform: translateY(-50%) scaleY(0);
    transform-origin: center;
    transition: transform var(--dur) var(--ease);
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-bottom-color: var(--line);
    color: var(--lime);
  }

  .page-faq .faq-index__list a:hover::before,
  .page-faq .faq-index__list a:focus-visible::before {
    transform: translateY(-50%) scaleY(1);
  }

  .page-faq .qa summary {
    padding-right: 48px;
  }

  .page-faq .qa[open] summary {
    padding-left: 18px;
  }

  .page-faq .qa__a {
    padding-left: 66px;
  }
}

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