.page-faq {
  --faq-rail: 236px;
  --faq-gap: clamp(20px, 3vw, 40px);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.75;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq p a,
.page-faq li a,
.page-faq td a,
.page-faq .faq-block__lead a {
  color: var(--green);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-faq .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: var(--faq-gap);
  padding: clamp(24px, 4vw, 44px) 0 clamp(22px, 3vw, 34px);
  border-bottom: 2px solid var(--ink);
}

.page-faq .faq-hero__lead h1 {
  font-family: var(--font-title);
  font-size: clamp(30px, 5vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--ink);
}

.page-faq .faq-hero__text {
  margin: 18px 0 0;
  max-width: 62ch;
  color: var(--ink-80);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__meta {
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--green);
  background: var(--paper-2);
  padding: 18px 18px 14px;
  align-self: start;
}

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

.page-faq .faq-meta__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-meta__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-meta__k {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  color: var(--ink-60);
  letter-spacing: 0.04em;
  min-width: 68px;
}

.page-faq .faq-meta__v {
  font-family: var(--font-title);
  font-size: 14.5px;
  color: var(--ink);
}

/* ---------- 提示条带 ---------- */
.page-faq .faq-alert {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: clamp(18px, 3vw, 28px);
  padding: 14px 18px;
  background: var(--green-deep);
  color: var(--paper);
  border-left: 6px solid var(--amber);
}

.page-faq .faq-alert p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.65;
  flex: 1 1 260px;
}

.page-faq .faq-alert a {
  color: var(--amber-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-faq .faq-rail__inner {
  border-top: 3px solid var(--green);
  padding-top: 14px;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-60);
}

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

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-title);
  font-size: 14.5px;
  line-height: 1.4;
  color: var(--ink-80);
  text-decoration: none;
  transition: color 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--green);
  padding-left: 6px;
  border-bottom-color: var(--amber);
}

.page-faq .faq-rail__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
  flex: 0 0 auto;
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-60);
}

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

/* ---------- 章节 ---------- */
.page-faq .faq-block {
  padding: clamp(26px, 4vw, 44px) 0;
  border-top: 1px solid var(--line-strong);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.4vw, 30px);
  line-height: 1;
  color: var(--amber);
  flex: 0 0 auto;
}

.page-faq .faq-block__title {
  font-family: var(--font-title);
  font-size: var(--fs-h3);
  line-height: 1.3;
  margin: 0;
  color: var(--ink);
}

.page-faq .faq-block__lead {
  margin: 16px 0 22px;
  max-width: 68ch;
  color: var(--ink-80);
}

/* ---------- 步骤卡 ---------- */
.page-faq .check-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .check-step {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-left: 4px solid var(--amber);
}

.page-faq .check-step__input {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.page-faq .check-step__label {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 2px 12px;
  padding: 16px 16px 16px 14px;
  cursor: pointer;
}

.page-faq .check-step__box {
  grid-row: 1 / span 3;
  width: 20px;
  height: 20px;
  margin-top: 4px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  position: relative;
}

.page-faq .check-step__input:checked + .check-step__label .check-step__box {
  background: var(--green);
  border-color: var(--green);
}

.page-faq .check-step__input:checked + .check-step__label .check-step__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--paper);
  border-bottom: 2px solid var(--paper);
  transform: rotate(40deg);
}

.page-faq .check-step__input:focus-visible + .check-step__label {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.page-faq .check-step__num {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  letter-spacing: 0.1em;
  color: var(--warn);
}

.page-faq .check-step__title {
  font-family: var(--font-title);
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .check-step__text {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink-80);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 24px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-strong);
  background: var(--steel-soft);
}

.page-faq .faq-figure figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-60);
}

/* ---------- 编号详情步骤 ---------- */
.page-faq .steps-detail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
  counter-reset: none;
}

.page-faq .steps-detail__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--line);
}

.page-faq .steps-detail__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .steps-detail__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--green);
  border-top: 2px solid var(--green);
  padding-top: 6px;
}

.page-faq .steps-detail__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-title);
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .steps-detail__body p {
  margin: 0 0 8px;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--ink-80);
}

.page-faq .steps-detail__meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--ink-60);
  letter-spacing: 0.02em;
}

/* ---------- 对照表 ---------- */
.page-faq .compat-tabs {
  margin-top: 22px;
  position: relative;
}

.page-faq .compat-radio {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.page-faq .compat-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-faq .compat-switch label {
  cursor: pointer;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  background: transparent;
  font-family: var(--font-title);
  font-size: 14px;
  line-height: 1.4;
  color: var(--ink-80);
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .compat-switch label:hover {
  border-color: var(--green);
  color: var(--green);
}

.page-faq #faq-tab-desktop:checked ~ .compat-switch label[for="faq-tab-desktop"],
.page-faq #faq-tab-mobile:checked ~ .compat-switch label[for="faq-tab-mobile"] {
  background: var(--green);
  border-color: var(--green);
  color: var(--paper);
}

.page-faq .compat-pane {
  display: none;
}

.page-faq #faq-tab-desktop:checked ~ .compat-pane--desktop,
.page-faq #faq-tab-mobile:checked ~ .compat-pane--mobile {
  display: block;
}

.page-faq .compat-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--steel);
  background: var(--paper);
}

.page-faq .compat-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14.5px;
  line-height: 1.6;
}

.page-faq .compat-table th {
  text-align: left;
  font-family: var(--font-title);
  font-size: 13px;
  letter-spacing: 0.05em;
  background: var(--steel-soft);
  color: var(--green-deep);
  padding: 11px 14px;
  border-bottom: 2px solid var(--steel);
  white-space: nowrap;
}

.page-faq .compat-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--ink-80);
}

.page-faq .compat-table tbody tr:nth-child(even) {
  background: rgba(220, 229, 236, 0.4);
}

.page-faq .compat-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .compat-foot {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-60);
}

/* ---------- 判断方法 ---------- */
.page-faq .judge-grid {
  display: grid;
  gap: 12px;
}

.page-faq .judge-card {
  border: 1px solid var(--line);
  border-top: 3px solid var(--steel);
  background: var(--paper);
  padding: 18px;
}

.page-faq .judge-card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-title);
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .judge-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-80);
}

.page-faq .judge-foot {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--amber);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-80);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-group {
  margin-top: 22px;
}

.page-faq .qa-group__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  letter-spacing: 0.12em;
  color: var(--green);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .qa {
  border: 1px solid var(--line);
  background: var(--paper);
  margin-bottom: 8px;
}

.page-faq .qa summary {
  cursor: pointer;
  list-style: none;
  padding: 13px 42px 13px 16px;
  position: relative;
  font-family: var(--font-title);
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink);
  transition: background 180ms var(--ease);
}

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

.page-faq .qa summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--amber);
}

.page-faq .qa[open] summary {
  background: var(--amber-soft);
}

.page-faq .qa[open] summary::after {
  content: "–";
}

.page-faq .qa p {
  margin: 0;
  padding: 14px 16px 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-80);
  border-top: 1px solid var(--line);
}

/* ---------- 联系支持 ---------- */
.page-faq .support-grid {
  display: grid;
  gap: 12px;
}

.page-faq .support-card {
  border: 1px solid var(--line-strong);
  background: var(--paper-2);
  padding: 18px;
}

.page-faq .support-card--main {
  background: var(--green-deep);
  border-color: var(--green-deep);
  color: var(--paper);
}

.page-faq .support-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 16px;
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.page-faq .support-card--main h3 {
  color: var(--amber-soft);
}

.page-faq .support-card__line {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  word-break: break-all;
  color: var(--ink);
}

.page-faq .support-card--main .support-card__line {
  color: var(--paper);
  font-size: 15px;
}

.page-faq .support-card p {
  margin: 0 0 8px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-80);
}

.page-faq .support-card--main p {
  color: rgba(245, 242, 234, 0.82);
}

.page-faq .support-card p:last-child {
  margin-bottom: 0;
}

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

.page-faq .support-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink-80);
}

.page-faq .support-list li:last-child {
  border-bottom: 0;
}

.page-faq .support-list .status-dot {
  flex: 0 0 auto;
}

.page-faq .support-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line-strong);
}

.page-faq .support-foot p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-60);
  flex: 1 1 260px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .check-steps {
    grid-template-columns: 1fr;
  }

  .page-faq .judge-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .support-card--main {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail__inner {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .faq-block__head {
    gap: 18px;
  }

  .page-faq .support-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-faq .support-card--main {
    grid-column: auto;
    grid-row: span 2;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-figure {
    margin-top: 28px;
  }
}