.page-faq {
  --faq-paper-ink: #1d2b20;
  --faq-card: rgba(16, 48, 31, .46);
  --faq-card-open: rgba(184, 255, 61, .07);
}

.page-faq a:focus-visible {
  outline: 2px solid var(--mq-lime);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-block: clamp(22px, 4.5vw, 52px) clamp(30px, 6vw, 68px);
}

.page-faq .faq-hero__grid {
  align-items: end;
  gap: clamp(24px, 4vw, 46px);
  margin-top: clamp(20px, 3.5vw, 40px);
}

.page-faq .faq-hero__title {
  font-family: var(--mq-font-sans);
  font-weight: 300;
  font-size: clamp(32px, 6.4vw, 64px);
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--mq-white);
  margin: 10px 0 18px;
  max-width: 16ch;
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.page-faq .faq-hero__jump .mq-pill {
  font-family: var(--mq-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}

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

.page-faq .faq-hero__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--mq-radius-lg);
}

/* ---------- 章节外壳 ---------- */

.page-faq .faq-block {
  padding-block: clamp(34px, 6vw, 76px);
}

.page-faq .faq-block + .faq-block {
  border-top: 1px dashed var(--mq-hair);
}

.page-faq .faq-block__head {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-block__no {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--mq-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mq-lime);
}

.page-faq .faq-block__no::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--mq-lime);
}

.page-faq .faq-block__title {
  font-family: var(--mq-font-sans);
  font-weight: 300;
  font-size: clamp(23px, 3.6vw, 40px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--mq-white);
  margin: 0;
  max-width: 24ch;
}

/* ---------- 折叠条目 ---------- */

.page-faq .faq-item {
  border: 1px solid var(--mq-hair-2);
  border-radius: var(--mq-radius-lg);
  background: var(--faq-card);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .28s var(--mq-ease), background-color .28s var(--mq-ease);
}

.page-faq .faq-item:hover {
  border-color: var(--mq-lime);
}

.page-faq .faq-item[open] {
  border-color: var(--mq-lime);
  background: var(--faq-card-open);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  transition: background-color .28s var(--mq-ease);
}

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

.page-faq .faq-item[open] > summary {
  background: var(--mq-lime-soft);
}

.page-faq .faq-item__no {
  font-family: var(--mq-font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--mq-flag);
  min-width: 26px;
}

.page-faq .faq-item__q {
  font-family: var(--mq-font-sans);
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--mq-white);
  transition: color .28s var(--mq-ease);
}

.page-faq .faq-item[open] > summary .faq-item__q {
  color: var(--mq-ink);
}

.page-faq .faq-item[open] > summary .faq-item__no {
  color: #2f4f16;
}

.page-faq .faq-item__sign {
  position: relative;
  width: 22px;
  height: 22px;
  flex: none;
  border: 1px solid var(--mq-hair-2);
  border-radius: var(--mq-pill);
  transition: border-color .28s var(--mq-ease);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  inset: 50% 5px auto 5px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--mq-lime);
  transform: translateY(-50%);
  transition: transform .28s var(--mq-ease), opacity .28s var(--mq-ease), background-color .28s var(--mq-ease);
}

.page-faq .faq-item__sign::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__sign {
  border-color: rgba(8, 23, 15, .3);
}

.page-faq .faq-item[open] .faq-item__sign::before,
.page-faq .faq-item[open] .faq-item__sign::after {
  background: var(--mq-ink);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}

.page-faq .faq-item__body {
  display: grid;
  gap: 14px;
  padding: 18px 18px 22px;
  border-top: 1px dashed var(--mq-hair);
}

.page-faq .faq-item__term {
  border-left: 2px solid var(--mq-flag);
  padding-left: 12px;
  font-family: var(--mq-font-mono);
  font-size: 12px;
  letter-spacing: .07em;
  line-height: 1.75;
}

.page-faq .faq-term__label {
  display: block;
  text-transform: uppercase;
  color: var(--mq-lime);
}

.page-faq .faq-term__text {
  display: block;
  color: var(--mq-mute);
}

.page-faq .faq-item__ans {
  font-size: 16px;
  line-height: 1.78;
  color: var(--mq-white);
}

.page-faq .faq-item__ans p {
  margin: 0 0 8px;
}

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

.page-faq .faq-item__ans a {
  color: var(--mq-lime);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size .3s var(--mq-ease);
}

.page-faq .faq-item__ans a:hover,
.page-faq .faq-item__ans a:focus-visible {
  background-size: 100% 1px;
}

.page-faq .faq-term__row {
  display: grid;
  gap: 12px;
}

/* ---------- 更新节奏 ---------- */

.page-faq .faq-update__grid {
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

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

.page-faq .faq-update__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--mq-radius-lg);
}

/* ---------- 角球说明 ---------- */

.page-faq .faq-corner__lead {
  display: grid;
  gap: 18px;
  align-items: center;
  margin-bottom: 22px;
  padding: 20px 22px;
  border: 1px solid var(--mq-hair);
  border-radius: var(--mq-radius-md);
  background: rgba(16, 48, 31, .34);
}

.page-faq .faq-arc {
  width: 100%;
  max-width: 210px;
  height: auto;
  justify-self: start;
}

.page-faq .faq-corner__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mq-white);
  max-width: 62ch;
}

/* ---------- 邮件咨询 ---------- */

.page-faq .faq-mail__grid {
  gap: clamp(22px, 3vw, 42px);
  align-items: start;
}

.page-faq .faq-mail__panel {
  padding: 22px;
  border: 1px solid var(--mq-hair-2);
  border-radius: var(--mq-radius-lg);
  background: rgba(16, 48, 31, .5);
}

.page-faq .faq-mail__label {
  margin: 0 0 14px;
  font-family: var(--mq-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mq-lime);
}

.page-faq .faq-mail__value {
  margin: 0 0 10px;
  font-family: var(--mq-font-display);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 600;
  letter-spacing: .01em;
  line-height: 1.3;
  color: var(--mq-white);
  word-break: break-word;
}

.page-faq .faq-mail__note {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mq-mute);
}

.page-faq .faq-mail__btn {
  margin-top: 10px;
}

/* ---------- 纸质面板 ---------- */

.page-faq .faq-block--paper {
  padding: clamp(22px, 4.5vw, 54px);
  border-radius: var(--mq-radius-lg);
  background: var(--mq-paper);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .35);
}

.page-faq .faq-block--paper .faq-block__no {
  color: var(--mq-flag);
}

.page-faq .faq-block--paper .faq-block__no::before {
  background: var(--mq-flag);
}

.page-faq .faq-block--paper .faq-block__title {
  color: var(--faq-paper-ink);
}

.page-faq .faq-block--paper .faq-item {
  background: rgba(255, 255, 255, .5);
  border-color: var(--mq-paper-2);
}

.page-faq .faq-block--paper .faq-item:hover {
  border-color: var(--mq-flag);
}

.page-faq .faq-block--paper .faq-item[open] {
  background: rgba(255, 255, 255, .74);
  border-color: var(--mq-flag);
}

.page-faq .faq-block--paper .faq-item__q {
  color: var(--faq-paper-ink);
}

.page-faq .faq-block--paper .faq-item__no {
  color: var(--mq-flag);
}

.page-faq .faq-block--paper .faq-item[open] > summary {
  background: var(--mq-flag);
}

.page-faq .faq-block--paper .faq-item[open] > summary .faq-item__q,
.page-faq .faq-block--paper .faq-item[open] > summary .faq-item__no {
  color: var(--mq-white);
}

.page-faq .faq-block--paper .faq-item[open] .faq-item__sign {
  border-color: rgba(255, 255, 255, .55);
}

.page-faq .faq-block--paper .faq-item[open] .faq-item__sign::before,
.page-faq .faq-block--paper .faq-item[open] .faq-item__sign::after {
  background: var(--mq-white);
}

.page-faq .faq-block--paper .faq-item__sign::before,
.page-faq .faq-block--paper .faq-item__sign::after {
  background: var(--mq-flag);
}

.page-faq .faq-block--paper .faq-item__sign {
  border-color: rgba(8, 23, 15, .22);
}

.page-faq .faq-block--paper .faq-item__body {
  border-top-color: rgba(8, 23, 15, .18);
}

.page-faq .faq-block--paper .faq-item__ans {
  color: var(--faq-paper-ink);
}

.page-faq .faq-block--paper .faq-item__ans a {
  color: #1c4a12;
}

.page-faq .faq-block--paper .faq-item__term {
  border-left-color: var(--mq-flag);
}

.page-faq .faq-block--paper .faq-term__label {
  color: #9c3a17;
}

.page-faq .faq-block--paper .faq-term__text {
  color: #5b6a55;
}

/* ---------- 收束 ---------- */

.page-faq .faq-block--end {
  border-top: 1px dashed var(--mq-hair);
}

.page-faq .faq-end {
  display: grid;
  gap: 20px;
  align-items: center;
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--mq-hair-2);
  border-radius: var(--mq-radius-lg);
  background: linear-gradient(120deg, rgba(255, 90, 43, .14), rgba(184, 255, 61, .08));
}

.page-faq .faq-end__lead {
  margin: 0;
  font-family: var(--mq-font-sans);
  font-weight: 300;
  font-size: clamp(19px, 2.6vw, 28px);
  line-height: 1.5;
  color: var(--mq-white);
  max-width: 40ch;
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-item > summary {
    padding: 18px 24px;
    gap: 18px;
  }

  .page-faq .faq-item__body {
    grid-template-columns: minmax(140px, 190px) 1fr;
    gap: 26px;
    padding: 20px 24px 26px;
  }

  .page-faq .faq-corner__lead {
    grid-template-columns: 210px 1fr;
    gap: 30px;
    padding: 24px 28px;
  }

  .page-faq .faq-end {
    grid-template-columns: 1fr auto;
    gap: 28px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-update__media {
    position: sticky;
    top: 120px;
  }

  .page-faq .faq-mail__panel {
    position: sticky;
    top: 120px;
  }
}

@media (max-width: 640px) {
  .page-faq .faq-hero__title {
    max-width: none;
  }

  .page-faq .faq-item__q {
    font-size: 15.5px;
  }

  .page-faq .faq-block--paper {
    padding: 20px 16px;
    border-radius: var(--mq-radius-md);
  }

  .page-faq .faq-mail__value {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item__q,
  .page-faq .faq-item__sign,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after,
  .page-faq .faq-item__ans a {
    transition: none;
  }
}