.page-faq {
  --faq-line: #E4DFD2;
  --faq-body-text: rgba(14, 22, 32, .78);
  background: var(--paper-100);
  color: var(--ink-900);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 7vw, 92px) 0 clamp(38px, 6vw, 76px);
  background:
    radial-gradient(130% 150% at 16% -10%, rgba(43, 231, 206, .18), transparent 58%),
    linear-gradient(158deg, var(--deep-900) 0%, var(--deep-700) 100%);
  color: var(--paper-100);
  border-bottom: 1px solid var(--deep-500);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(140, 163, 180, .11) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 163, 180, .11) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 92%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 92%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .crumbs {
  margin: 0 0 clamp(26px, 4vw, 46px);
}

.page-faq .faq-hero .crumbs ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
}

.page-faq .faq-hero .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--deep-500);
}

.page-faq .faq-hero .crumbs a,
.page-faq .faq-hero .crumbs span {
  color: var(--mist-400);
  text-decoration: none;
}

.page-faq .faq-hero .crumbs a:hover {
  color: var(--cyan-400);
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 18px;
  color: var(--cyan-400);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.page-faq .faq-hero h1 {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.6vw, 4.1rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--paper-100);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(.96rem, 1.6vw, 1.06rem);
  line-height: 1.85;
  color: rgba(246, 243, 234, .76);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 44px);
  padding: clamp(36px, 6vw, 76px) 0 clamp(64px, 9vw, 118px);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-side {
  min-width: 0;
}

.page-faq .faq-side__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan-700);
}

.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 clamp(26px, 4vw, 38px);
}

.page-faq .faq-filters .faq-side__title {
  flex: 0 0 100%;
}

.page-faq .faq-filters .filter-btn {
  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--faq-line);
  background: #fff;
  color: var(--ink-900);
  border-radius: 999px;
  padding: 7px 15px;
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 500;
  line-height: 1.3;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-filters .filter-btn:hover {
  border-color: var(--cyan-400);
  color: var(--cyan-700);
}

.page-faq .faq-filters .filter-btn.is-active {
  background: var(--deep-700);
  border-color: var(--deep-700);
  color: var(--paper-100);
}

.page-faq .faq-jump {
  border-top: 1px solid var(--faq-line);
  padding-top: 20px;
}

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

.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px dotted var(--faq-line);
  color: var(--ink-900);
  text-decoration: none;
  font-size: .92rem;
  line-height: 1.5;
  transition: color .16s var(--ease);
}

.page-faq .faq-jump a .mono {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan-700);
}

.page-faq .faq-jump a:hover {
  color: var(--cyan-700);
}

/* ---------- 区块 ---------- */
.page-faq .faq-block {
  margin: 0 0 clamp(40px, 6vw, 72px);
  scroll-margin-top: 132px;
}

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

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.page-faq .faq-block__num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan-700);
}

.page-faq .faq-block h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ink-900);
}

.page-faq .faq-block__lead {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 54ch;
  font-size: .97rem;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .faq-block__sub {
  margin: clamp(24px, 3vw, 34px) 0 14px;
  padding-left: 12px;
  border-left: 3px solid var(--cyan-400);
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--deep-700);
}

/* ---------- 图版 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 10px;
  background: #fff;
  border: 1px solid var(--faq-line);
  border-radius: 2px;
  box-shadow: 0 1px 0 var(--faq-line), 0 14px 30px -26px rgba(4, 18, 31, .65);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 1px;
  background: var(--deep-700);
}

.page-faq .faq-figure__cap {
  display: block;
  margin-top: 9px;
  padding: 0 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .07em;
  color: var(--cyan-700);
}

.page-faq .faq-figure--side {
  margin-top: clamp(22px, 3vw, 30px);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-item {
  margin-bottom: 10px;
  background: #fff;
  border: 1px solid var(--faq-line);
  border-left: 3px solid transparent;
  border-radius: 2px;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

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

.page-faq .faq-item[open] {
  border-left-color: var(--cyan-400);
  box-shadow: 0 12px 28px -24px rgba(4, 18, 31, .8);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 16px 16px;
  list-style: none;
  cursor: pointer;
  color: var(--ink-900);
  font-weight: 700;
  font-size: .98rem;
  line-height: 1.62;
  transition: color .16s var(--ease);
}

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

.page-faq .faq-item summary:hover {
  color: var(--cyan-700);
}

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  padding-top: 2px;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan-700);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin: 7px 2px 0 auto;
  border-right: 2px solid var(--deep-500);
  border-bottom: 2px solid var(--deep-500);
  transform: rotate(45deg);
  transition: transform .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(-135deg);
  border-color: var(--orange-500);
}

.page-faq .faq-item__body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--faq-line);
  margin-top: 0;
}

.page-faq .faq-item__body > p {
  margin: 14px 0 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--faq-body-text);
}

.page-faq .faq-item__body a {
  color: var(--cyan-700);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item__body a:hover {
  color: var(--orange-500);
}

/* ---------- 勾选步骤 ---------- */
.page-faq .faq-check {
  list-style: none;
  margin: 16px 0 0;
  padding: 14px 14px 12px;
  display: grid;
  gap: 10px;
  background: rgba(228, 223, 210, .32);
  border-left: 2px solid var(--deep-500);
}

.page-faq .faq-check li label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: .92rem;
  line-height: 1.65;
  color: var(--faq-body-text);
}

.page-faq .faq-check input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  border: 1px solid var(--deep-500);
  border-radius: 2px;
  background: #fff;
  position: relative;
  cursor: pointer;
  transition: background .15s var(--ease), border-color .15s var(--ease);
}

.page-faq .faq-check input:checked {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-faq .faq-check input:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--deep-900);
  border-bottom: 2px solid var(--deep-900);
  transform: rotate(42deg);
}

.page-faq .faq-check input:checked + span {
  color: rgba(14, 22, 32, .42);
  text-decoration: line-through;
}

/* ---------- 速查表 ---------- */
.page-faq .faq-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--faq-line);
  border-radius: 2px;
  background: #fff;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 580px;
  border-collapse: collapse;
  font-size: .9rem;
}

.page-faq .faq-table thead th {
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan-700);
  background: transparent;
  border-bottom: 1px solid var(--deep-500);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  padding: 13px 16px;
  line-height: 1.7;
  color: var(--faq-body-text);
  vertical-align: top;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-table tbody tr:first-child td {
  border-top: none;
}

.page-faq .faq-table tbody tr:nth-child(even) {
  background: rgba(228, 223, 210, .4);
}

.page-faq .faq-table tbody td:first-child {
  font-weight: 700;
  color: var(--ink-900);
  white-space: nowrap;
}

/* ---------- 人工支持卡片 ---------- */
.page-faq .faq-support {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--orange-500);
  border-radius: 3px;
  background:
    radial-gradient(120% 140% at 90% 0%, rgba(255, 122, 47, .18), transparent 60%),
    linear-gradient(150deg, var(--deep-900), var(--deep-700));
  color: var(--paper-100);
}

.page-faq .faq-support__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange-500);
}

.page-faq .faq-support__title {
  margin: 0 0 clamp(22px, 3vw, 30px);
  max-width: 24em;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  line-height: 1.42;
  letter-spacing: -.01em;
  color: var(--paper-100);
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-support__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 12px 0;
  border-top: 1px solid rgba(18, 58, 85, .9);
}

.page-faq .faq-support__label {
  flex: 0 0 auto;
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist-400);
}

.page-faq .faq-support__mail {
  min-width: 0;
  flex: 1 1 auto;
  font-family: var(--font-mono);
  font-size: clamp(.92rem, 2.6vw, 1.08rem);
  letter-spacing: .02em;
  color: var(--cyan-400);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-faq .faq-support__time {
  flex: 1 1 auto;
  font-size: .96rem;
  line-height: 1.6;
  color: var(--paper-100);
}

.page-faq .faq-copy {
  flex: 0 0 auto;
  appearance: none;
  -webkit-appearance: none;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .09em;
  color: var(--mist-400);
  background: transparent;
  border: 1px solid var(--deep-500);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-copy:hover {
  border-color: var(--cyan-400);
  color: var(--cyan-400);
}

.page-faq .faq-support__foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(18, 58, 85, .9);
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist-400);
}

.page-faq .faq-support__foot a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-support__foot a:hover {
  color: var(--orange-500);
}

/* ---------- 平板 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-support__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px 28px;
  }

  .page-faq .faq-support__item {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .page-faq .faq-support__label {
    min-width: 0;
  }

  .page-faq .faq-figure {
    padding: 12px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: 246px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 68px);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 128px;
    align-self: start;
  }

  .page-faq .faq-item summary {
    padding: 18px 20px;
    font-size: 1.01rem;
  }

  .page-faq .faq-item__body {
    padding: 0 20px 20px;
  }

  .page-faq .faq-block__head {
    gap: 16px;
  }

  .page-faq .faq-table {
    font-size: .93rem;
  }

  .page-faq .faq-support__grid {
    gap: 6px 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__mark,
  .page-faq .faq-copy,
  .page-faq .faq-filters .filter-btn,
  .page-faq .faq-jump a,
  .page-faq .faq-check input {
    transition: none;
  }
}