.page-faq {
  --faq-gap: clamp(14px, 2.2vw, 24px);
  --faq-pad: clamp(18px, 3vw, 38px);
  --faq-soft: rgba(185, 255, 61, 0.12);
  display: block;
  margin-left: var(--rail-w);
  padding-block: clamp(14px, 3vw, 30px) 0;
  color: var(--fog);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  background:
    radial-gradient(110% 55% at 85% -8%, rgba(185, 255, 61, 0.09), transparent 62%),
    radial-gradient(90% 50% at 0% 105%, rgba(23, 61, 47, 0.55), transparent 72%);
}

.page-faq .faq-shell {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 0 var(--gutter);
  display: grid;
  gap: var(--faq-gap);
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-faq p {
  margin: 0;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pitch);
}

/* ---------- hero ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  gap: var(--faq-gap);
  padding: var(--faq-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(90% 70% at 8% 0%, rgba(185, 255, 61, 0.13), transparent 58%),
    linear-gradient(165deg, var(--board-green), var(--deep-green) 58%, var(--ink-black));
  box-shadow: var(--shadow-float);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -40% 55%;
  height: 60%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(244, 214, 74, 0.14), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero__body {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .faq-hero h1 {
  font-size: clamp(32px, 7vw, 62px);
  line-height: 1.05;
  color: var(--fog);
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  color: rgba(243, 247, 240, 0.84);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 2px;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(104px, 1fr));
  gap: 12px;
  margin: 6px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stat dt {
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--sage);
}

.page-faq .faq-hero__stat dd {
  margin: 4px 0 0;
  font-size: 15px;
  color: var(--pitch);
}

.page-faq .faq-hero__figure {
  position: relative;
  z-index: 1;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(180deg, var(--glass), var(--ink-black));
  border: 1px solid var(--line);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 300px;
  object-fit: cover;
  object-position: center 30%;
}

.page-faq .faq-hero__figure figcaption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(7, 11, 9, 0.72);
  color: var(--sage);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

/* ---------- 共用小节标题 ---------- */
.page-faq .faq-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  margin-bottom: 16px;
}

.page-faq .faq-head h2 {
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.12;
}

.page-faq .faq-head__note {
  flex: 1 1 240px;
  font-size: var(--fs-sm);
  color: var(--sage);
}

/* ---------- 两步速查 ---------- */
.page-faq .faq-quick {
  padding: var(--faq-pad);
  border-radius: var(--radius-lg);
  background: var(--deep-green);
  border: 1px solid var(--line);
}

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

.page-faq .faq-step {
  position: relative;
  padding: 18px 18px 20px;
  border-radius: var(--radius-md);
  background: var(--glass);
  border: 1px solid var(--line);
  border-left: 3px solid var(--pitch);
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-step__no {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--pitch);
}

.page-faq .faq-step h3 {
  font-size: var(--fs-h3);
  line-height: 1.25;
}

.page-faq .faq-step p {
  font-size: var(--fs-sm);
  color: rgba(243, 247, 240, 0.82);
}

.page-faq .faq-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--pitch);
}

.page-faq .faq-path span:not([aria-hidden]) {
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(185, 255, 61, 0.1);
  border: 1px solid rgba(185, 255, 61, 0.28);
  white-space: nowrap;
}

.page-faq .faq-path span[aria-hidden] {
  color: var(--sage);
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
  font-size: var(--fs-sm);
  color: var(--sage);
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 20px;
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ref-yellow);
}

.page-faq .faq-step__meta {
  font-size: 13px;
  color: var(--sage);
}

.page-faq .faq-ver {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--ref-yellow);
  color: var(--ink-black);
  font-weight: 700;
}

/* ---------- 分类折叠 ---------- */
.page-faq .faq-guides {
  display: grid;
  gap: var(--faq-gap);
  padding-top: 4px;
}

.page-faq .faq-guides__aside {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-guides__aside h2 {
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.12;
}

.page-faq .faq-guides__intro {
  font-size: var(--fs-sm);
  color: var(--sage);
}

.page-faq .faq-guides__figure {
  margin: 2px 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--deep-green);
}

.page-faq .faq-guides__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 220px;
  object-fit: cover;
}

.page-faq .faq-guides__figure figcaption {
  padding: 8px 14px;
  font-size: 12px;
  color: var(--sage);
  border-top: 1px solid var(--line);
}

.page-faq .faq-guides__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: var(--fs-sm);
}

.page-faq .faq-guides__links a {
  color: var(--pitch);
  text-decoration: none;
  border-bottom: 1px solid rgba(185, 255, 61, 0.3);
  padding-bottom: 1px;
}

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

.page-faq .faq-acc {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-acc__item {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--board-green);
  overflow: hidden;
  transition: background 240ms var(--ease), border-color 240ms var(--ease);
}

.page-faq .faq-acc__item[open] {
  background: var(--glass);
  border-color: rgba(185, 255, 61, 0.4);
}

.page-faq .faq-acc__item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--fog);
  font-weight: 600;
}

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

.page-faq .faq-acc__item summary::marker {
  content: "";
}

.page-faq .faq-acc__title {
  flex: 1 1 auto;
  font-size: 16px;
  letter-spacing: 0.01em;
}

.page-faq .faq-acc__item summary .pill {
  flex: 0 0 auto;
  font-size: 12px;
}

.page-faq .faq-acc__item summary::after {
  content: "+";
  flex: 0 0 auto;
  width: 22px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--pitch);
}

.page-faq .faq-acc__item[open] summary::after {
  content: "−";
}

.page-faq .faq-acc__item summary:focus-visible {
  outline: 2px solid var(--pitch);
  outline-offset: -3px;
}

.page-faq .faq-acc__list {
  list-style: none;
  margin: 0;
  padding: 2px 16px 16px;
  display: grid;
  gap: 8px;
  font-size: var(--fs-sm);
  color: var(--sage);
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.page-faq .faq-acc__list li {
  position: relative;
  padding-left: 18px;
}

.page-faq .faq-acc__list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: rgba(185, 255, 61, 0.55);
  font-family: var(--font-mono);
}

/* ---------- 热门问题 ---------- */
.page-faq .faq-hot {
  padding: var(--faq-pad);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, var(--deep-green), var(--ink-black));
  border: 1px solid var(--line);
}

.page-faq .faq-hot__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-hot__item {
  position: relative;
  padding: 16px 16px 16px 46px;
  border-radius: var(--radius-md);
  background: rgba(27, 46, 38, 0.72);
  border: 1px solid var(--line);
}

.page-faq .faq-hot__item::before {
  content: "?";
  position: absolute;
  left: 14px;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--ref-yellow);
}

.page-faq .faq-hot__item h3 {
  font-size: 16px;
  line-height: 1.35;
  color: var(--fog);
  margin-bottom: 6px;
}

.page-faq .faq-hot__item p {
  font-size: var(--fs-sm);
  color: var(--sage);
}

/* ---------- 版本时间线 ---------- */
.page-faq .faq-history {
  padding: var(--faq-pad);
  border-radius: var(--radius-lg);
  background: var(--deep-green);
  border: 1px solid var(--line);
}

.page-faq .faq-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-timeline__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(7, 11, 9, 0.42);
  border: 1px solid var(--line);
  border-left: 3px solid var(--board-green);
}

.page-faq .faq-timeline__item--now {
  border-left-color: var(--ref-yellow);
  background: rgba(244, 214, 74, 0.07);
}

.page-faq .faq-timeline__ver {
  justify-self: start;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--board-green);
  color: var(--pitch);
  font-size: 13px;
  letter-spacing: 0.05em;
}

.page-faq .faq-timeline__item--now .faq-timeline__ver {
  background: var(--ref-yellow);
  color: var(--ink-black);
  font-weight: 700;
}

.page-faq .faq-timeline__body h3 {
  font-size: 17px;
  line-height: 1.35;
  margin-bottom: 4px;
}

.page-faq .faq-timeline__body p {
  font-size: var(--fs-sm);
  color: var(--sage);
}

/* ---------- 底部固定反馈条 ---------- */
.page-faq .faq-feedback {
  position: sticky;
  bottom: 0;
  z-index: 6;
  margin-top: 2px;
  padding: 14px clamp(14px, 3vw, 22px) calc(14px + env(safe-area-inset-bottom, 0px));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  border: 1px solid rgba(185, 255, 61, 0.32);
  border-bottom: 0;
  background: rgba(27, 46, 38, 0.95);
  box-shadow: 0 -22px 46px -34px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-feedback__inner {
  display: grid;
  gap: 10px;
  max-width: var(--content-max);
  margin-inline: auto;
}

.page-faq .faq-feedback__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--pitch);
  letter-spacing: 0.01em;
}

.page-faq .faq-feedback__text {
  font-size: 13px;
  color: var(--sage);
  max-width: 62ch;
}

.page-faq .faq-feedback__contacts {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.page-faq .faq-feedback__line {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--fog);
  word-break: break-all;
}

.page-faq .faq-feedback__label {
  color: var(--sage);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .faq-feedback__link {
  justify-self: start;
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  background: var(--pitch);
  color: var(--ink-black);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

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

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

  .page-faq .faq-timeline__item {
    grid-template-columns: 96px 1fr;
    align-items: start;
    gap: 14px;
  }

  .page-faq .faq-hero__figure img {
    max-height: 340px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: 1.18fr 0.82fr;
    align-items: stretch;
  }

  .page-faq .faq-hero__figure img {
    max-height: none;
    height: 100%;
    min-height: 320px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-feedback__inner {
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 16px 24px;
  }

  .page-faq .faq-feedback__contacts {
    flex-direction: column;
    gap: 4px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-guides {
    grid-template-columns: 320px minmax(0, 1fr);
    align-items: start;
    gap: clamp(20px, 3vw, 44px);
  }

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

  .page-faq .faq-head {
    margin-bottom: 20px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hot__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

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