.page-faq {
  --faq-surface: rgba(247, 244, 239, .045);
  --faq-surface-strong: rgba(247, 244, 239, .09);
  --faq-shadow: 0 26px 62px -34px rgba(0, 0, 0, .95);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 5.5vw, 60px) 0 clamp(30px, 6vw, 74px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -14%;
  width: min(78vw, 640px);
  height: min(78vw, 640px);
  background: radial-gradient(circle at 68% 32%, rgba(255, 77, 28, .3), transparent 62%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  bottom: 8%;
  width: 46%;
  height: 3px;
  background: linear-gradient(90deg, var(--c-orange), rgba(255, 176, 32, .4), transparent);
  transform: rotate(-3.4deg);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 5vw, 48px);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-size: clamp(31px, 8.4vw, 80px);
  line-height: 1.04;
  letter-spacing: -.04em;
  color: var(--c-white);
}

.page-faq .faq-hero .lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(247, 244, 239, .78);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__frame {
  margin: 0;
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--faq-shadow);
  background: linear-gradient(150deg, rgba(14, 59, 58, .9), rgba(11, 14, 19, .95));
}

.page-faq .faq-hero__frame .frame__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-index {
  padding: clamp(20px, 4vw, 34px) 0 clamp(30px, 5vw, 56px);
}

.page-faq .faq-index__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .2em;
  color: var(--c-gray);
  font-weight: 500;
}

.page-faq .faq-cmd {
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-faq .faq-cmd__link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--c-orange);
  border-radius: 10px;
  background: var(--faq-surface);
  color: var(--c-white);
  text-decoration: none;
  transition: background .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-cmd__link:hover,
.page-faq .faq-cmd__link:focus-visible {
  background: rgba(255, 77, 28, .14);
  border-left-color: var(--c-amber);
  transform: translateX(4px);
}

.page-faq .faq-cmd__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-cyan);
  letter-spacing: .04em;
}

.page-faq .faq-cmd__label {
  font-size: 15px;
  line-height: 1.4;
}

/* ---------- 章节通用 ---------- */
.page-faq .section {
  padding: clamp(38px, 7vw, 84px) 0;
}

.page-faq .chapter {
  margin: 0 0 clamp(16px, 3vw, 26px);
}

.page-faq .chapter__num {
  font-size: clamp(54px, 13vw, 118px);
  line-height: .9;
}

.page-faq .chapter__title {
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.2vw, 42px);
  line-height: 1.22;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .lead {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(247, 244, 239, .76);
}

/* ---------- 01 观赛分类 ---------- */
.page-faq .faq-classes {
  background: linear-gradient(180deg, rgba(14, 59, 58, .34), rgba(11, 14, 19, 0) 72%);
}

.page-faq .faq-classes__lead {
  max-width: 68ch;
  margin: 0 0 clamp(22px, 4vw, 36px);
}

.page-faq .faq-cats {
  display: grid;
  gap: clamp(16px, 2.6vw, 24px);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-cat {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--c-orange);
  border-radius: var(--radius);
  background: var(--faq-surface);
}

.page-faq .faq-cat:nth-child(2) {
  border-top-color: var(--c-cyan);
}

.page-faq .faq-cat:nth-child(3) {
  border-top-color: var(--c-amber);
}

.page-faq .faq-cat:nth-child(4) {
  border-top-color: var(--c-indigo);
}

.page-faq .faq-cat__head {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--c-gray);
  font-weight: 500;
}

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

.page-faq .faq-cat__list li {
  display: grid;
  gap: 4px;
  padding: 10px 0 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-cat__list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-cat__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-white);
}

.page-faq .faq-cat__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(247, 244, 239, .62);
}

.page-faq .faq-classes__foot {
  margin: clamp(22px, 4vw, 34px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 244, 239, .74);
}

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

/* ---------- 02 数据说明 ---------- */
.page-faq .faq-data__lead {
  max-width: 66ch;
  margin: 0 0 clamp(22px, 4vw, 34px);
}

.page-faq .faq-metrics {
  display: grid;
  gap: clamp(16px, 2.6vw, 24px);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-metric {
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(247, 244, 239, .075), rgba(247, 244, 239, .015));
  position: relative;
}

.page-faq .faq-metric:nth-child(2) {
  background: linear-gradient(155deg, rgba(0, 216, 255, .11), rgba(59, 47, 128, .12));
  border-color: rgba(0, 216, 255, .28);
}

.page-faq .faq-metric__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 27px);
  letter-spacing: -.015em;
  color: var(--c-white);
}

.page-faq .faq-metric__text {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 244, 239, .78);
}

.page-faq .faq-range {
  display: flex;
  gap: 6px;
  margin: 20px 0 14px;
}

.page-faq .faq-range__seg {
  height: 8px;
  border-radius: 999px;
  flex: 1;
}

.page-faq .faq-range__seg--low {
  background: var(--c-gray);
  opacity: .55;
}

.page-faq .faq-range__seg--mid {
  background: var(--c-cyan);
}

.page-faq .faq-range__seg--high {
  background: var(--c-orange);
}

.page-faq .faq-metric__keys {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-metric__keys li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(247, 244, 239, .66);
}

.page-faq .faq-metric__dot {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-radius: 50%;
  background: var(--c-gray);
}

.page-faq .faq-metric__dot--mid {
  background: var(--c-cyan);
}

.page-faq .faq-metric__dot--high {
  background: var(--c-orange);
}

.page-faq .faq-metric__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-gray);
}

/* ---------- 03 规则说明 ---------- */
.page-faq .faq-rules {
  background: linear-gradient(180deg, rgba(122, 31, 61, .34), rgba(11, 14, 19, 0) 68%);
}

.page-faq .faq-rules__lead {
  max-width: 68ch;
  margin: 0 0 clamp(22px, 4vw, 36px);
}

.page-faq .faq-rules__layout {
  display: grid;
  gap: clamp(20px, 3.4vw, 34px);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-rules__fig {
  align-self: start;
}

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

.page-faq .faq-rulelist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-rulelist__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-rulelist__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--c-amber);
  letter-spacing: .06em;
  padding-top: 3px;
}

.page-faq .faq-rulelist__title {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--c-white);
}

.page-faq .faq-rulelist__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247, 244, 239, .7);
}

.page-faq .faq-rules__foot {
  margin: 20px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(247, 244, 239, .72);
}

/* ---------- 04 订正与反馈 ---------- */
.page-faq .faq-update__grid {
  display: grid;
  gap: clamp(16px, 2.6vw, 24px);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-update__stat {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--faq-surface);
  border-bottom: 3px solid var(--c-orange);
}

.page-faq .faq-update__stat:nth-child(2) {
  border-bottom-color: var(--c-cyan);
}

.page-faq .faq-update__stat .stat__value {
  font-family: var(--font-display);
  font-size: clamp(38px, 7vw, 62px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--c-white);
}

.page-faq .faq-update__stat .stat__label {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(247, 244, 239, .66);
}

.page-faq .faq-update__text {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(59, 47, 128, .3), rgba(11, 14, 19, .5));
}

.page-faq .faq-update__text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 244, 239, .8);
}

.page-faq .faq-update__text .btn {
  margin-top: 6px;
}

/* ---------- 05 常见问答 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--faq-surface);
  overflow: hidden;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(255, 77, 28, .5);
  background: rgba(255, 77, 28, .07);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  padding: 18px clamp(16px, 2.4vw, 24px);
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-white);
}

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

.page-faq .faq-item__q:hover {
  color: var(--c-orange-soft);
}

.page-faq .faq-item__idx {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--c-cyan);
  padding-top: 4px;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--c-gray);
  transition: transform .25s var(--ease), background .25s var(--ease);
}

.page-faq .faq-item__sign::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-item[open] .faq-item__sign::before {
  background: var(--c-orange);
}

.page-faq .faq-item__a {
  padding: 0 clamp(16px, 2.4vw, 24px) 20px;
  padding-left: calc(clamp(16px, 2.4vw, 24px) + 44px);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(247, 244, 239, .76);
}

/* ---------- 联系 ---------- */
.page-faq .faq-contact {
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .faq-contact__inner {
  display: grid;
  gap: clamp(22px, 3.6vw, 38px);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-contact__title {
  margin: 14px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .faq-contact__lead p {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 244, 239, .76);
}

.page-faq .faq-contact__card {
  display: grid;
  gap: 2px;
  padding: clamp(18px, 2.8vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(0, 216, 255, .1), rgba(11, 14, 19, .6));
}

.page-faq .faq-contact__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 13px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-contact__item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-contact__key {
  flex: none;
  min-width: 78px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--c-gray);
}

.page-faq .faq-contact__value {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-white);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(247, 244, 239, .6);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-cmd {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-rules__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-faq .faq-update__grid {
    grid-template-columns: minmax(0, .7fr) minmax(0, .7fr) minmax(0, 1.6fr);
    align-items: stretch;
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-hero {
    padding-top: clamp(40px, 5vw, 72px);
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: center;
  }

  .page-faq .faq-hero__frame {
    clip-path: polygon(0 6%, 100% 0, 100% 90%, 9% 100%, 0 88%);
    border-radius: 0;
  }

  .page-faq .faq-cats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-cmd {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-cmd__link {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    min-height: 104px;
  }

  .page-faq .faq-cmd__link:hover,
  .page-faq .faq-cmd__link:focus-visible {
    transform: translateY(-3px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cmd__link,
  .page-faq .faq-item,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }

  .page-faq .faq-cmd__link:hover,
  .page-faq .faq-cmd__link:focus-visible {
    transform: none;
  }
}