.page-faq {
  --faq-paper-ink: #0A231D;
  --faq-paper-line: rgba(10, 35, 29, 0.18);
  --faq-hair: rgba(124, 154, 146, 0.28);
}

.page-faq h2 {
  font-family: var(--font-display);
  font-size: clamp(23px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--fog);
  margin: 10px 0 16px;
}

.page-faq h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--fog);
  margin: 0 0 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-bottom: clamp(36px, 6vw, 78px);
}

.page-faq .faq-hero__frame {
  position: relative;
  margin-top: clamp(16px, 2.4vw, 28px);
  padding: clamp(24px, 4vw, 54px) clamp(20px, 3.6vw, 50px) clamp(20px, 3vw, 40px);
  background: linear-gradient(152deg, #0A2A22 0%, #061A16 58%, #071F1A 100%);
  border: 1px solid rgba(53, 240, 208, 0.22);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
  overflow: hidden;
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(53, 240, 208, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53, 240, 208, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  left: 26px;
  bottom: 0;
  width: 132px;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--cyan) 0 2px, transparent 2px 9px);
  pointer-events: none;
}

.page-faq .faq-hero__head {
  position: relative;
  max-width: 760px;
}

.page-faq .faq-hero__head h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 6.2vw, 58px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: 0.005em;
  color: var(--fog);
  margin: 10px 0 18px;
}

.page-faq .faq-hero__head .lede {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--muted);
  max-width: 700px;
}

.page-faq .faq-steps {
  position: relative;
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-step {
  position: relative;
  padding: 20px 20px 22px;
  background: rgba(12, 43, 36, 0.72);
  border: 1px solid rgba(53, 240, 208, 0.14);
  border-left: 2px solid var(--teal);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

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

.page-faq .faq-step__title {
  margin: 12px 0 8px;
  font-size: clamp(19px, 2.3vw, 22px);
}

.page-faq .faq-step__text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
}

.page-faq .faq-step__check {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-hair);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-step__flag {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

/* ---------- 纸面对照区 ---------- */
.page-faq .section--paper .eyebrow {
  color: var(--teal);
}

.page-faq .section--paper h2 {
  color: var(--faq-paper-ink);
}

.page-faq .faq-read__lede {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(10, 35, 29, 0.78);
  margin: 0 0 clamp(22px, 3vw, 34px);
}

.page-faq .faq-table__wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--faq-paper-line);
  background: rgba(255, 255, 255, 0.32);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-table__caption {
  caption-side: top;
  text-align: left;
  padding: 14px 16px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  border-bottom: 1px solid var(--faq-paper-line);
}

.page-faq .faq-table th[scope="col"] {
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #0C6C60;
  background: rgba(12, 43, 36, 0.07);
  border-bottom: 1px solid var(--faq-paper-line);
}

.page-faq .faq-table tbody tr {
  transition: background var(--dur), box-shadow var(--dur);
}

.page-faq .faq-table tbody tr:hover,
.page-faq .faq-table tbody tr:focus-within {
  background: rgba(53, 240, 208, 0.16);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-faq .faq-table th[scope="row"] {
  text-align: left;
  padding: 14px 16px;
  width: 22%;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--faq-paper-ink);
  border-bottom: 1px dashed var(--faq-paper-line);
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: 14px 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(10, 35, 29, 0.84);
  border-bottom: 1px dashed var(--faq-paper-line);
  vertical-align: top;
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: none;
}

.page-faq .faq-read__more {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 15px;
  color: rgba(10, 35, 29, 0.76);
}

.page-faq .faq-read__more a {
  color: #0C6C60;
  text-decoration: underline;
  text-decoration-color: rgba(12, 108, 96, 0.45);
  text-underline-offset: 3px;
}

.page-faq .faq-read__more a:hover {
  text-decoration-color: var(--flare);
}

/* ---------- 记录调取 ---------- */
.page-faq .fetch-grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 48px);
}

.page-faq .fetch-visual .figure {
  margin-bottom: 14px;
}

.page-faq .fetch-svg {
  display: block;
  width: 100%;
  height: auto;
  background: var(--panel-deep);
}

.page-faq .fetch-body__lede {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 660px;
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-faq .fetch-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .fetch-step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  padding: 16px 16px 16px 0;
  border-top: 1px solid rgba(53, 240, 208, 0.14);
}

.page-faq .fetch-step:last-child {
  border-bottom: 1px solid rgba(53, 240, 208, 0.14);
}

.page-faq .fetch-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .fetch-step__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .fetch-step:hover {
  background: rgba(18, 59, 50, 0.55);
}

/* ---------- 常见疑问 ---------- */
.page-faq .faq-ask {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .faq-ask__lede {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 420px;
}

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

.page-faq .faq-ask__main .filter {
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  position: relative;
  background: var(--panel);
  border: 1px solid rgba(53, 240, 208, 0.14);
  border-left: 3px solid var(--faq-hair);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: border-color var(--dur), background var(--dur);
}

.page-faq .faq-item:hover {
  background: var(--panel-2);
}

.page-faq .faq-item[open] {
  background: var(--panel-2);
  border-left-color: var(--cyan);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 20px 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item summary::after {
  content: "＋";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] summary::after {
  content: "－";
  color: var(--flare);
}

.page-faq .faq-item__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--teal);
  padding-top: 2px;
}

.page-faq .faq-item__text {
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.62;
  color: var(--fog);
}

.page-faq .faq-item__a {
  margin: 0 18px;
  padding: 14px 0 18px;
  border-top: 1px dashed var(--faq-hair);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 帮助块 ---------- */
.page-faq .faq-help {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  padding: clamp(24px, 3.4vw, 46px);
}

.page-faq .faq-help__text p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 560px;
}

.page-faq .faq-help__contact {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 20px;
  background: rgba(6, 26, 22, 0.62);
  border-left: 2px solid var(--cyan);
}

.page-faq .faq-help__contact .btn {
  justify-self: start;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid rgba(53, 240, 208, 0.16);
  }

  .page-faq .faq-step {
    background: none;
    border: none;
    padding: 26px 24px 4px 0;
  }

  .page-faq .faq-step + .faq-step {
    padding-left: 24px;
  }

  .page-faq .faq-step + .faq-step::before {
    content: "";
    position: absolute;
    top: 8%;
    left: 0;
    width: 1px;
    height: 84%;
    background: linear-gradient(180deg, transparent, rgba(53, 240, 208, 0.55), transparent);
    transform: rotate(9deg);
    transform-origin: top center;
  }
}

@media (min-width: 900px) {
  .page-faq .fetch-grid {
    grid-template-columns: 0.92fr 1.08fr;
    align-items: start;
  }

  .page-faq .faq-help {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-ask {
    grid-template-columns: minmax(260px, 340px) 1fr;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}