.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 56px) 0 clamp(26px, 4vw, 48px);
  border-bottom: 2px solid var(--line-2);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 86%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 86%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 40px);
}

.page-faq .faq-hero__lead h1 {
  font-family: var(--font-serif);
  font-size: clamp(30px, 6vw, 54px);
  line-height: 1.18;
  font-weight: 600;
  color: var(--paper);
  margin: 10px 0 14px;
}

.page-faq .faq-hero__lead .lead {
  margin: 0 0 14px;
  color: var(--paper);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.62;
  max-width: 60ch;
}

.page-faq .faq-hero__note {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  max-width: 58ch;
}

.page-faq .faq-meter {
  background: var(--grid);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  padding: 18px 20px 12px;
  align-self: end;
}

.page-faq .faq-meter__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

.page-faq .faq-meter__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-meter__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6vw, 46px);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--cyan);
  flex: 0 0 auto;
}

.page-faq .faq-meter__label {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 40px);
  padding: clamp(28px, 4vw, 52px) 0 clamp(48px, 7vw, 96px);
}

.page-faq .section-nav__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .section-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .section-nav__list::-webkit-scrollbar {
  display: none;
}

.page-faq .section-nav__list li {
  flex: 0 0 auto;
}

.page-faq .section-nav a {
  display: block;
  padding: 7px 12px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 120ms linear, border-color 120ms linear;
}

.page-faq .section-nav a:hover {
  color: var(--cyan);
  border-color: var(--cyan-dim);
}

.page-faq .section-nav a[data-active] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-section {
  border-top: 2px solid var(--line-2);
  padding-top: clamp(18px, 3vw, 28px);
  margin-top: clamp(36px, 5vw, 68px);
}

.page-faq .faq-section:first-child {
  margin-top: 0;
}

.page-faq .faq-section .section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: clamp(16px, 2vw, 26px);
}

.page-faq .section-head__index {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.24;
  font-weight: 600;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-faq .section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.62;
  max-width: 62ch;
}

/* 步骤条 */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 26px;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 44px;
  bottom: 0;
  width: 1px;
  background: var(--cyan-dim);
  opacity: 0.55;
}

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

.page-faq .faq-step__num {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--cyan-dim);
  background: var(--ink);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
}

.page-faq .faq-step h3 {
  margin: 8px 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
  letter-spacing: 0.01em;
}

.page-faq .faq-step__body p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.62;
  max-width: 66ch;
}

/* 图片容器 */
.page-faq .faq-figure {
  margin: clamp(18px, 3vw, 28px) 0 0;
  border: 1px solid var(--line);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

.page-faq .faq-figure--square {
  max-width: 460px;
}

.page-faq .faq-crosslink {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

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

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

/* 两级查询说明 */
.page-faq .faq-lookup {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--line);
}

.page-faq .faq-lookup__step {
  padding: 20px 20px 22px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-lookup__tag {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-lookup__step h3 {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .faq-lookup__step p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.62;
  max-width: 64ch;
}

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

/* 呼吸带 */
.page-faq .faq-breath {
  margin-top: clamp(22px, 3vw, 34px);
  border-top: 2px solid var(--line-2);
  border-bottom: 1px solid var(--line);
}

/* 四类划分对照表 */
.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
}

.page-faq .faq-table__caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px 10px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 11px 14px;
  border-bottom: 1px solid var(--line-2);
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.55;
  vertical-align: top;
}

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

.page-faq .faq-table tbody tr:hover {
  background: var(--grid);
}

.page-faq .faq-table td:first-child {
  font-family: var(--font-mono);
  color: var(--cyan);
  white-space: nowrap;
}

/* 两级分类 */
.page-faq .faq-levels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-faq .faq-level {
  border: 1px solid var(--line);
  padding: 18px 18px 20px;
}

.page-faq .faq-level--season {
  border-left: 2px solid var(--line-amber);
}

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

.page-faq .faq-level__bar {
  height: 10px;
  background: var(--grid);
  border: 1px solid var(--line);
  margin-bottom: 12px;
  overflow: hidden;
}

.page-faq .faq-level__bar .bar__fill {
  display: block;
  height: 100%;
  width: var(--fill, 0%);
  background: var(--cyan-dim);
  transition: width 400ms var(--ease), background-color 120ms linear;
}

.page-faq .faq-level:hover .faq-level__bar .bar__fill {
  background: var(--cyan);
}

.page-faq .faq-level--season .faq-level__bar .bar__fill {
  background: var(--amber-dim);
}

.page-faq .faq-level--season:hover .faq-level__bar .bar__fill {
  background: var(--amber);
}

.page-faq .faq-level__desc {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  max-width: 62ch;
}

.page-faq .faq-levels__note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line-amber);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.62;
  max-width: 66ch;
}

/* 折叠问答 */
.page-faq .faq-qa-list {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-qa__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 14px;
  cursor: pointer;
  list-style: none;
  transition: background-color 120ms linear;
}

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

.page-faq .faq-qa__head:hover {
  background: var(--grid);
}

.page-faq .faq-qa__head:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .faq-qa__q {
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
  line-height: 1.5;
}

.page-faq .faq-qa__toggle {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
}

.page-faq .faq-qa__toggle::before,
.page-faq .faq-qa__toggle::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}

.page-faq .faq-qa__toggle::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .faq-qa__toggle::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
  transition: transform 120ms linear, opacity 120ms linear;
}

.page-faq details[open] .faq-qa__toggle::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq details[open] .faq-qa__head {
  background: var(--grid);
}

.page-faq .faq-qa__body {
  background: var(--plate);
  color: var(--ink);
  padding: 18px 16px 20px;
}

.page-faq .faq-qa__verdict {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.55;
  font-weight: 600;
  color: var(--ink);
}

.page-faq .faq-qa__steps {
  margin: 0;
  padding-left: 20px;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.62;
}

.page-faq .faq-qa__steps li + li {
  margin-top: 6px;
}

.page-faq .faq-qa__steps li::marker {
  font-family: var(--font-mono);
  color: #0E7A6B;
}

/* 联络 */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border: 1px solid var(--line);
}

.page-faq .faq-contact__item {
  padding: 18px 20px 20px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-contact__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .faq-contact__value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.6vw, 17px);
  letter-spacing: 0.02em;
  color: var(--cyan);
  word-break: break-word;
}

.page-faq .faq-contact__item:last-child .faq-contact__value {
  color: var(--amber);
}

.page-faq .faq-contact__note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  max-width: 62ch;
}

.page-faq .faq-contact__tail {
  margin: clamp(16px, 2vw, 22px) 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
  max-width: 70ch;
}

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

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

/* 平板及以上 */
@media (min-width: 760px) {
  .page-faq .faq-lookup {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-lookup__step {
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .page-faq .faq-lookup__step:last-child {
    border-right: 0;
  }

  .page-faq .faq-levels {
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1px solid var(--line);
  }

  .page-faq .faq-level {
    border: 0;
    border-right: 1px solid var(--line);
  }

  .page-faq .faq-level--season {
    border-left: 0;
    border-right: 0;
  }

  .page-faq .faq-levels .faq-level:last-child {
    border-right: 0;
  }

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

  .page-faq .faq-contact__item {
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }

  .page-faq .faq-contact__item:last-child {
    border-right: 0;
  }
}

/* 桌面 */
@media (min-width: 1000px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-layout.grid-12 {
    grid-template-columns: 196px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .col-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .section-nav__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .section-nav a {
    border: 0;
    border-left: 2px solid var(--line);
    padding: 8px 12px;
    white-space: normal;
  }

  .page-faq .section-nav a[data-active] {
    background: transparent;
    color: var(--cyan);
    border-left-color: var(--cyan);
  }
}

/* 大屏 */
@media (min-width: 1240px) {
  .page-faq .col-main {
    padding-right: clamp(0px, 2vw, 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-level__bar .bar__fill,
  .page-faq .faq-qa__toggle::after,
  .page-faq .faq-qa__head,
  .page-faq .section-nav a {
    transition: none;
  }
}

.page-faq {
  --fill: currentColor;
}