.page-faq {
  --faq-deep-cyan: #17756c;
  --faq-gap: clamp(20px, 4vw, 40px);
  background: var(--ink);
  color: var(--silver);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding-top: clamp(104px, 15vw, 168px);
  padding-bottom: clamp(44px, 7vw, 84px);
  background:
    radial-gradient(720px 420px at 8% -12%, rgba(54, 224, 208, 0.18), transparent 64%),
    radial-gradient(620px 380px at 102% 4%, rgba(232, 180, 90, 0.12), transparent 62%),
    var(--ink);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: repeating-radial-gradient(circle at 88% 18%, transparent 0 40px, rgba(124, 139, 143, 0.12) 40px 41px);
  opacity: 0.7;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: end;
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-faq .breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--karst);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-faq .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover {
  color: var(--cyan);
}

.page-faq .breadcrumbs [aria-current="page"] {
  color: var(--cyan-soft);
}

.page-faq .display {
  margin: 0 0 18px;
  font-size: clamp(36px, 7vw, 72px);
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero .lede {
  max-width: 34em;
  color: var(--mist);
}

.page-faq .faq-hero__facts {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 36px);
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--karst);
}

.page-faq .faq-factnum {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-hero__facts li:nth-child(2) .faq-factnum {
  color: var(--gold);
}

/* 问题入口 */
.page-faq .faq-hero__finder {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(30, 43, 51, 0.94), rgba(17, 28, 46, 0.94));
}

.page-faq .faq-finder__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px 6px 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgba(11, 18, 32, 0.72);
  transition: border-color 0.24s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: rgba(54, 224, 208, 0.55);
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 11px 0;
  border: 0;
  background: transparent;
  color: var(--silver);
  font: inherit;
  font-size: 15px;
}

.page-faq .faq-search__input::placeholder {
  color: var(--karst);
}

.page-faq .faq-search__input:focus-visible {
  outline: none;
}

.page-faq .faq-search__dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(54, 224, 208, 0.16);
}

.page-faq .faq-finder__hint {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--karst);
}

.page-faq .faq-hotlist {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
}

.page-faq .faq-hotlist a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(11, 18, 32, 0.5);
  color: var(--mist);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-hotlist a::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
}

.page-faq .faq-hotlist a:hover,
.page-faq .faq-hotlist a:focus-visible {
  color: var(--cyan-soft);
  border-color: rgba(54, 224, 208, 0.5);
  background: rgba(54, 224, 208, 0.08);
}

/* ---------- 通用节律 ---------- */
.page-faq .faq-docs,
.page-faq .faq-questions,
.page-faq .faq-support,
.page-faq .faq-cta {
  padding-top: clamp(52px, 8vw, 100px);
  padding-bottom: clamp(52px, 8vw, 100px);
}

.page-faq .faq-shot {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, var(--ink-3), var(--ink-2));
}

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

.page-faq .faq-shot__cap {
  display: block;
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.03em;
  color: var(--karst);
}

/* ---------- 会员权益文档 ---------- */
.page-faq .faq-docs {
  background: var(--ink-2);
}

.page-faq .faq-docs__top {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-faq .faq-docs__intro .prose {
  max-width: 36em;
  color: var(--mist);
}

.page-faq .faq-docs__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 46px);
}

.page-faq .faq-plate {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(170deg, rgba(30, 43, 51, 0.72), rgba(17, 28, 46, 0.62));
  transition: border-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-faq .faq-plate:nth-child(1) {
  border-top-left-radius: var(--radius-lg);
}

.page-faq .faq-plate:nth-child(4) {
  border-bottom-right-radius: var(--radius-lg);
}

.page-faq .faq-plate[open] {
  border-color: rgba(54, 224, 208, 0.42);
  background: rgba(30, 43, 51, 0.82);
}

.page-faq .faq-plate__sum {
  display: grid;
  gap: 9px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-plate__sum:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 6px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-plate__meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-faq .faq-plate__num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-plate__title {
  display: block;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--silver);
}

.page-faq .faq-plate__abstract {
  display: block;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-plate__sum::after {
  content: "展开详情";
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan-soft);
}

.page-faq .faq-plate[open] .faq-plate__sum::after {
  content: "收起详情";
}

.page-faq .faq-plate__body {
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px dashed var(--line-strong);
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.75;
}

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

.page-faq .faq-plate__body li {
  position: relative;
  padding-left: 16px;
}

.page-faq .faq-plate__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--gold-deep);
}

/* ---------- 苗银白呼吸区：换机清单 ---------- */
.page-faq .faq-check {
  background: var(--silver);
  color: var(--ink);
}

.page-faq .faq-check .eyebrow {
  color: var(--faq-deep-cyan);
}

.page-faq .faq-check .section-title {
  color: var(--ink);
}

.page-faq .faq-check .prose {
  max-width: 36em;
  color: rgba(11, 18, 32, 0.72);
}

.page-faq .faq-check__inner {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-faq .faq-steps {
  list-style: none;
  display: grid;
  gap: 14px;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  column-gap: 14px;
  padding: 18px 20px;
  border: 1px solid rgba(11, 18, 32, 0.09);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
}

.page-faq .faq-steps__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.05;
  color: var(--faq-deep-cyan);
}

.page-faq .faq-steps h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-faq .faq-steps p {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(11, 18, 32, 0.72);
}

.page-faq .faq-check__link {
  margin: clamp(22px, 3vw, 28px) 0 0;
}

.page-faq .faq-check .btn--line {
  border-color: rgba(23, 117, 108, 0.45);
  color: var(--faq-deep-cyan);
}

.page-faq .faq-check .btn--line:hover,
.page-faq .faq-check .btn--line:focus-visible {
  background: rgba(23, 117, 108, 0.08);
  border-color: var(--faq-deep-cyan);
}

.page-faq .faq-check .faq-shot {
  border-color: rgba(11, 18, 32, 0.1);
  background: linear-gradient(150deg, #e7eeee, var(--silver));
}

.page-faq .faq-check .faq-shot__cap {
  color: rgba(11, 18, 32, 0.6);
}

/* ---------- 高频问题 ---------- */
.page-faq .faq-questions {
  background: var(--ink);
}

.page-faq .faq-questions__head {
  max-width: 760px;
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-faq .faq-questions__head .prose {
  color: var(--mist);
}

.page-faq .faq-groups {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-group {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
  padding-left: 14px;
  border-left: 3px solid var(--gold);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.04em;
  color: var(--cyan-soft);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.6;
  color: var(--silver);
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--cyan);
}

.page-faq .faq-item[open] summary {
  color: var(--cyan-soft);
}

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

.page-faq .faq-item__body {
  padding: 0 2px 16px;
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.76;
}

.page-faq .faq-item__body p {
  margin: 0;
}

/* ---------- 咨询 ---------- */
.page-faq .faq-support {
  background: var(--ink-2);
}

.page-faq .faq-support__inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-faq .faq-support__text .prose {
  max-width: 34em;
  color: var(--mist);
}

.page-faq .faq-mailtips {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
}

.page-faq .faq-mailtips li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-mailtips span {
  display: inline-flex;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: rgba(232, 180, 90, 0.14);
  color: var(--gold);
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.03em;
}

.page-faq .faq-support__card {
  padding: clamp(22px, 3.4vw, 34px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(30, 43, 51, 0.94), rgba(17, 28, 46, 0.96));
}

.page-faq .faq-support__kicker {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-contact {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-faq .faq-contact > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-contact dt {
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--karst);
}

.page-faq .faq-contact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--silver);
  word-break: break-all;
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 26px);
}

.page-faq .copy-btn {
  cursor: pointer;
}

.page-faq .faq-support__note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--karst);
}

.page-faq .faq-support__note a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(167, 245, 238, 0.4);
}

.page-faq .faq-support__note a:hover {
  color: var(--cyan);
}

/* ---------- 收束 ---------- */
.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  background: var(--ink);
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -160px;
  width: 520px;
  height: 520px;
  border-radius: 46% 54% 58% 42% / 52% 44% 56% 48%;
  background: radial-gradient(circle at 42% 42%, rgba(54, 224, 208, 0.24), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-cta__inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.page-faq .faq-cta__inner .prose {
  color: var(--mist);
}

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

  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 52px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .page-faq .faq-docs__top {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-check__inner {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-faq .faq-support__inner {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-docs__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-plate:nth-child(2),
  .page-faq .faq-plate:nth-child(5) {
    transform: translateY(18px);
  }

  .page-faq .faq-docs__grid {
    padding-bottom: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-plate,
  .page-faq .faq-plate__sum,
  .page-faq .faq-hotlist a,
  .page-faq .faq-item summary,
  .page-faq .faq-search {
    transition: none;
  }

  .page-faq .faq-plate:nth-child(2),
  .page-faq .faq-plate:nth-child(5) {
    transform: none;
  }
}