.page-faq {
  --faq-dark-rule: rgba(147, 168, 166, 0.28);
  --faq-cream-rule: rgba(26, 20, 15, 0.22);
  --faq-gap-md: clamp(24px, 4vw, 44px);
  --faq-gap-lg: clamp(40px, 6vw, 76px);
  --faq-num-w: 48px;
  background: var(--night-blue);
  color: var(--board-white);
  padding: clamp(20px, 3.5vw, 36px) 0 clamp(48px, 8vw, 96px);
  overflow-x: clip;
}

@media (min-width: 720px) {
  .page-faq {
    --faq-num-w: 76px;
  }
}

/* ---------- 面包屑与页面标题 ---------- */

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--label-teal);
  padding-top: clamp(8px, 2vw, 20px);
}

.page-faq .breadcrumb a {
  color: var(--electric-teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-short) var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  border-bottom-color: var(--electric-teal);
}

.page-faq .breadcrumb__sep {
  color: var(--label-teal);
  opacity: 0.6;
}

.page-faq .faq-head {
  padding: clamp(18px, 3.5vw, 40px) 0 clamp(24px, 4vw, 44px);
  border-bottom: 2px solid var(--faq-dark-rule);
}

.page-faq .faq-head .label {
  color: var(--label-teal);
  display: block;
  margin: 0 0 12px;
}

.page-faq .faq-head h1 {
  margin: 0;
  font-family: var(--font-headline);
  font-size: clamp(33px, 5.4vw, 68px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: 0.01em;
  max-width: 20ch;
}

.page-faq .faq-head__lead {
  margin: clamp(16px, 2.5vw, 26px) 0 0;
  max-width: 42ch;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.8;
  color: rgba(246, 248, 247, 0.82);
}

/* ---------- 三步动线 ---------- */

.page-faq .faq-start {
  padding: clamp(36px, 6vw, 76px) 0 clamp(28px, 4vw, 52px);
}

.page-faq .faq-start__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

@media (min-width: 940px) {
  .page-faq .faq-start__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: start;
  }
}

.page-faq .faq-start__flow .label {
  color: var(--label-teal);
  display: block;
  margin: 0 0 10px;
}

.page-faq .faq-start__heading {
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-family: var(--font-headline);
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.2;
  font-weight: 700;
  color: var(--board-white);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: clamp(22px, 3vw, 34px);
}

@media (min-width: 720px) {
  .page-faq .faq-step {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 20px;
  }
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 52px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--signal-orange), rgba(255, 122, 26, 0.12));
}

@media (min-width: 720px) {
  .page-faq .faq-step::before {
    left: 30px;
    top: 66px;
  }
}

.page-faq .faq-step:last-child {
  padding-bottom: 0;
}

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step__no {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  background: var(--arena-green);
  border: 2px solid var(--signal-orange);
  color: var(--score-red);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .faq-step__body {
  padding-top: 4px;
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-family: var(--font-headline);
  font-size: clamp(18px, 2.1vw, 24px);
  line-height: 1.3;
  font-weight: 700;
  color: var(--board-white);
}

.page-faq .faq-step__text {
  margin: 0 0 12px;
  max-width: 38ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(246, 248, 247, 0.76);
}

.page-faq .faq-step__link {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--electric-teal);
  text-decoration: none;
  border-bottom: 1px solid var(--electric-teal);
  padding-bottom: 2px;
  transition: color var(--dur-short) var(--ease), border-color var(--dur-short) var(--ease);
}

.page-faq .faq-step__link:hover,
.page-faq .faq-step__link:focus-visible {
  color: var(--signal-orange);
  border-bottom-color: var(--signal-orange);
}

.page-faq .faq-start__figure {
  margin: 0;
  border: 3px solid var(--signal-orange);
  box-shadow: 10px 10px 0 var(--shadow-black);
  background: var(--arena-green);
  overflow: hidden;
}

.page-faq .faq-start__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

/* ---------- 找问题输入条 ---------- */

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: clamp(26px, 4vw, 46px);
  padding: 14px 18px;
  border: 2px solid var(--faq-dark-rule);
  background: rgba(16, 38, 31, 0.5);
}

.page-faq .faq-filter .label {
  color: var(--label-teal);
  flex: 0 0 auto;
}

.page-faq .faq-filter__input {
  flex: 1 1 220px;
  min-width: 0;
  background: transparent;
  border: 0;
  border-bottom: 2px solid var(--label-teal);
  color: var(--board-white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  padding: 6px 2px;
  outline: none;
  transition: border-color var(--dur-short) var(--ease);
}

.page-faq .faq-filter__input::placeholder {
  color: rgba(147, 168, 166, 0.85);
}

.page-faq .faq-filter__input:focus-visible {
  border-bottom-color: var(--electric-teal);
}

/* ---------- 问答主区（奶油纸） ---------- */

.page-faq .faq-qa {
  color: var(--ink-brown);
  padding: clamp(40px, 6vw, 84px) 0;
}

.page-faq .faq-qa__heading {
  margin: 0 0 clamp(30px, 4vw, 52px);
  font-family: var(--font-headline);
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.15;
  font-weight: 700;
  color: var(--ink-brown);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 18px;
  padding-bottom: 14px;
  border-bottom: 3px solid var(--ink-brown);
}

.page-faq .faq-group__head .label {
  color: rgba(26, 20, 15, 0.55);
  margin: 0;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-headline);
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.3;
  font-weight: 700;
  color: var(--ink-brown);
}

.page-faq .faq-group__items {
  margin-top: 4px;
}

/* 手风琴条目 */

.page-faq .faq-item {
  border-top: 1px solid var(--faq-cream-rule);
  border-left: 4px solid transparent;
  background: transparent;
  transition: border-left-color var(--dur-base) var(--ease),
              background-color var(--dur-base) var(--ease);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--faq-cream-rule);
}

.page-faq .faq-item[open] {
  border-left-color: var(--signal-orange);
  background: rgba(255, 122, 26, 0.07);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: var(--faq-num-w) minmax(0, 1fr) 24px;
  align-items: start;
  gap: 12px;
  padding: clamp(18px, 2.6vw, 26px) clamp(14px, 2vw, 22px) clamp(18px, 2.6vw, 26px) 8px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--dur-short) var(--ease);
}

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

.page-faq .faq-item__q:hover {
  background: rgba(26, 20, 15, 0.04);
}

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

.page-faq .faq-item__no {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  color: rgba(26, 20, 15, 0.24);
  transition: color var(--dur-base) var(--ease);
}

.page-faq .faq-item[open] .faq-item__no {
  color: var(--score-red);
}

.page-faq .faq-item__text {
  margin: 0;
  padding-top: 0.28em;
  font-family: var(--font-headline);
  font-size: clamp(17px, 2vw, 23px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--ink-brown);
  text-wrap: pretty;
}

.page-faq .faq-item__mark {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 0.45em;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--ink-brown);
  transition: transform var(--dur-base) var(--ease),
              background-color var(--dur-base) var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 10px;
  width: 22px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 10px;
  top: 0;
  width: 2px;
  height: 22px;
}

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

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

.page-faq .faq-item__a {
  padding: 0 clamp(14px, 2vw, 22px) clamp(20px, 2.8vw, 30px)
           calc(8px + var(--faq-num-w) + 12px);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(26, 20, 15, 0.82);
}

/* 分组之间的呼吸区 */

.page-faq .faq-divider {
  height: clamp(34px, 5vw, 66px);
  margin: clamp(28px, 4vw, 54px) 0;
  border-top: 2px solid var(--faq-cream-rule);
  border-bottom: 2px solid var(--faq-cream-rule);
  background:
    repeating-linear-gradient(
      90deg,
      rgba(26, 20, 15, 0.14) 0,
      rgba(26, 20, 15, 0.14) 2px,
      transparent 2px,
      transparent 18px
    );
}

/* ---------- 订阅卡片（奶油纸上的暗色块） ---------- */

.page-faq .faq-sub {
  display: grid;
  gap: clamp(24px, 3.5vw, 44px);
  margin-top: clamp(36px, 5vw, 64px);
  padding: clamp(24px, 4vw, 46px);
  background: var(--night-blue);
  color: var(--board-white);
  border: 4px solid var(--ink-brown);
  box-shadow: 12px 12px 0 var(--shadow-black);
}

@media (min-width: 900px) {
  .page-faq .faq-sub {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }
}

.page-faq .faq-sub .label {
  display: block;
  margin: 0 0 12px;
  color: var(--signal-orange);
}

.page-faq .faq-sub__title {
  margin: 0 0 clamp(18px, 2.5vw, 26px);
  font-family: var(--font-headline);
  font-size: clamp(22px, 2.8vw, 34px);
  line-height: 1.2;
  font-weight: 700;
  color: var(--board-white);
}

.page-faq .faq-sub__list {
  list-style: none;
  margin: 0 0 clamp(18px, 2.5vw, 26px);
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-sub__row {
  display: grid;
  gap: 4px;
  padding: 12px 0 12px 14px;
  border-left: 3px solid var(--signal-orange);
  background: rgba(16, 38, 31, 0.72);
}

.page-faq .faq-sub__key {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--electric-teal);
}

.page-faq .faq-sub__val {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(246, 248, 247, 0.84);
}

.page-faq .faq-sub__foot {
  margin: 0 0 clamp(20px, 2.6vw, 28px);
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(246, 248, 247, 0.76);
}

.page-faq .faq-sub__foot a {
  color: var(--electric-teal);
  text-decoration: none;
  border-bottom: 1px solid var(--electric-teal);
}

.page-faq .faq-sub__foot a:hover,
.page-faq .faq-sub__foot a:focus-visible {
  color: var(--signal-orange);
  border-bottom-color: var(--signal-orange);
}

.page-faq .faq-sub__figure {
  margin: 0;
  border: 3px solid var(--signal-orange);
  overflow: hidden;
  background: var(--arena-green);
}

.page-faq .faq-sub__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

/* ---------- 收尾区块 ---------- */

.page-faq .faq-more {
  padding: clamp(44px, 7vw, 96px) 0 0;
}

.page-faq .faq-more__panel {
  padding: clamp(26px, 4vw, 52px);
  background: var(--arena-green);
  border: 4px solid var(--signal-orange);
  box-shadow: 12px 12px 0 var(--shadow-black);
}

.page-faq .faq-more__panel .label {
  display: block;
  margin: 0 0 12px;
  color: var(--label-teal);
}

.page-faq .faq-more__panel h2 {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-headline);
  font-size: clamp(25px, 3.4vw, 44px);
  line-height: 1.15;
  font-weight: 700;
  color: var(--board-white);
  max-width: 22ch;
}

.page-faq .faq-more__text {
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(246, 248, 247, 0.8);
}

.page-faq .faq-more__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 窄屏收口 ---------- */

@media (max-width: 520px) {
  .page-faq .faq-item__q {
    grid-template-columns: var(--faq-num-w) minmax(0, 1fr) 20px;
    gap: 10px;
    padding-left: 6px;
  }

  .page-faq .faq-item__a {
    padding-left: calc(6px + var(--faq-num-w) + 10px);
  }

  .page-faq .faq-step {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 12px;
  }

  .page-faq .faq-step__no {
    width: 42px;
    height: 42px;
    font-size: 16px;
  }

  .page-faq .faq-step::before {
    left: 20px;
    top: 46px;
  }

  .page-faq .faq-more__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}