.page-faq {
  background: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: 18px 34px;
  background:
    linear-gradient(180deg, rgba(244, 241, 234, 0) 55%, rgba(228, 224, 215, 0.7)),
    var(--c-bone);
  border-bottom: 3px solid var(--c-rock);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 18px;
  background: repeating-linear-gradient(90deg, var(--c-red) 0 9px, var(--c-bone) 9px 18px);
  opacity: 0.9;
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 26px;
  margin-top: 16px;
}

.page-faq .faq-h1 {
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-steel);
  margin: 10px 0 14px;
  transform: skewX(-2deg);
  transform-origin: left top;
  text-wrap: balance;
}

.page-faq .faq-lede {
  max-width: 58ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.62;
  color: var(--c-rock);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-hero-media {
  display: block;
  margin: 0;
  aspect-ratio: 10 / 7;
  border: 3px solid var(--c-rock);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  background: var(--c-paper);
  overflow: hidden;
}

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

.page-faq .faq-facts {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  border-top: var(--rule);
}

.page-faq .faq-facts li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 8px 2px;
  border-bottom: 1px dashed var(--c-cement);
  font-size: 14px;
  line-height: 1.5;
}

.page-faq .faq-facts .mono {
  flex: none;
  min-width: 22px;
  font-size: 22px;
  font-weight: 700;
  color: var(--c-red);
}

/* ---------- 症状跳转条 ---------- */
.page-faq .faq-symptom-bar {
  background: var(--c-steel);
  border-bottom: 3px solid var(--c-night);
}

.page-faq .faq-symptom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 12px;
}

.page-faq .faq-symptom-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-lime);
}

.page-faq .faq-symptom {
  display: inline-block;
  padding: 6px 12px;
  border: 2px solid rgba(244, 241, 234, 0.45);
  border-radius: 2px;
  font-size: 14px;
  color: var(--c-bone);
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-symptom:hover,
.page-faq .faq-symptom:focus-visible {
  background: var(--c-red);
  border-color: var(--c-red);
  color: #fff;
}

/* ---------- 章节节奏 ---------- */
.page-faq .section {
  padding-block: 42px;
}

.page-faq .faq-head {
  max-width: 720px;
}

.page-faq .faq-head .section-title,
.page-faq .faq-triage-title {
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--c-steel);
  margin: 8px 0 12px;
}

.page-faq .eyebrow {
  color: var(--c-clay);
  letter-spacing: 0.08em;
}

/* ---------- 三张步骤卡 ---------- */
.page-faq .step-grid {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.page-faq .step-card {
  background: var(--c-paper);
  border: 3px solid var(--c-rock);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  padding: 16px 16px 18px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.page-faq .step-card:hover {
  transform: translate(2px, 2px);
  box-shadow: 4px 4px 0 var(--c-rock);
}

.page-faq .step-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-faq .step-num {
  display: inline-block;
  padding: 6px 12px;
  background: var(--c-red);
  color: #fff;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1;
  letter-spacing: 0.04em;
  border-radius: 2px;
}

.page-faq .step-title {
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: 21px;
  line-height: 1.24;
  color: var(--c-steel);
  margin: 14px 0 10px;
}

.page-faq .step-symptom {
  margin: 0;
  font-size: 14px;
  line-height: 1.58;
  color: var(--c-rock);
}

.page-faq .step-symptom strong {
  color: var(--c-red-deep);
}

.page-faq .step-divider {
  width: 44px;
  height: 4px;
  margin: 14px 0;
  background: var(--c-lime);
}

.page-faq .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: st;
  display: grid;
  gap: 10px;
}

.page-faq .step-list li {
  counter-increment: st;
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--c-rock);
}

.page-faq .step-list li::before {
  content: counter(st);
  position: absolute;
  left: 0;
  top: 1px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-steel);
  color: var(--c-bone);
  font-family: var(--font-mono);
  font-size: 12px;
  border-radius: 2px;
}

.page-faq .step-check {
  display: flex;
  gap: 8px;
  margin: 16px 0 0;
  padding: 10px 12px;
  background: rgba(91, 107, 79, 0.14);
  border-left: 3px solid var(--c-moss);
  font-size: 13.5px;
  line-height: 1.52;
  color: var(--c-rock);
}

.page-faq .step-check-dot {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 5px;
  border-radius: 50%;
  background: var(--c-moss);
}

/* ---------- 九条清单 ---------- */
.page-faq .faq-checklist {
  background: linear-gradient(180deg, var(--c-bone), var(--c-paper));
  border-top: 3px solid var(--c-rock);
  border-bottom: 3px solid var(--c-rock);
}

.page-faq .checklist-wrap {
  display: grid;
  gap: 22px;
  margin-top: 26px;
}

.page-faq .checklist-main {
  counter-reset: done;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-faq .check-progress {
  order: -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  padding: 12px 14px;
  background: var(--c-steel);
  border: 2px solid var(--c-night);
  border-radius: var(--radius);
}

.page-faq .seg-bar {
  display: flex;
  flex: 1 1 190px;
  gap: 4px;
}

.page-faq .seg {
  flex: 1 1 auto;
  height: 12px;
  background: rgba(244, 241, 234, 0.22);
  border-radius: 1px;
  transition: background 0.2s ease;
}

.page-faq .check-progress-text {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-lime);
}

.page-faq .done-count::after {
  content: counter(done);
}

.page-faq .checklist-main:has(#faq-a01:checked) .seg-1,
.page-faq .checklist-main:has(#faq-a02:checked) .seg-2,
.page-faq .checklist-main:has(#faq-a03:checked) .seg-3,
.page-faq .checklist-main:has(#faq-a04:checked) .seg-4,
.page-faq .checklist-main:has(#faq-a05:checked) .seg-5,
.page-faq .checklist-main:has(#faq-a06:checked) .seg-6,
.page-faq .checklist-main:has(#faq-a07:checked) .seg-7,
.page-faq .checklist-main:has(#faq-a08:checked) .seg-8,
.page-faq .checklist-main:has(#faq-a09:checked) .seg-9 {
  background: var(--c-lime);
}

.page-faq .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--c-bone);
  border: 3px solid var(--c-rock);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
}

.page-faq .check-item {
  position: relative;
}

.page-faq .check-item + .check-item {
  border-top: 2px solid rgba(58, 64, 72, 0.22);
}

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

.page-faq .chk + label {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px 14px;
  cursor: pointer;
}

.page-faq .chk + label::before {
  content: "✓";
  width: 24px;
  height: 24px;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 2px solid var(--c-rock);
  border-radius: 2px;
  color: transparent;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
}

.page-faq .chk:checked + label {
  background: rgba(91, 107, 79, 0.1);
}

.page-faq .chk:checked + label::before {
  background: var(--c-moss);
  border-color: var(--c-moss);
  color: #fff;
}

.page-faq .chk:focus-visible + label {
  outline: 2px solid var(--c-lime);
  outline-offset: -4px;
}

.page-faq .check-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}

.page-faq .chk-id {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--c-red);
}

.page-faq .chk-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--c-rock);
}

.page-faq .check-desc {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-rock);
}

.page-faq .checklist-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-side-media {
  display: block;
  margin: 0;
  aspect-ratio: 4 / 3;
  border: 3px solid var(--c-rock);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  background: var(--c-paper);
  overflow: hidden;
}

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

.page-faq .aside-note {
  padding: 14px 16px;
  background: var(--c-steel);
  border: 2px solid var(--c-night);
  border-radius: var(--radius);
  color: var(--c-bone);
}

.page-faq .aside-note-label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-lime);
}

.page-faq .aside-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.58;
}

.page-faq .aside-note a {
  color: var(--c-lime);
  text-underline-offset: 3px;
}

/* ---------- 排查顺序 ---------- */
.page-faq .faq-triage {
  background: var(--c-steel);
  color: var(--c-bone);
  border-top: 3px solid var(--c-night);
  border-bottom: 3px solid var(--c-night);
}

.page-faq .faq-triage .eyebrow {
  color: var(--c-lime);
}

.page-faq .faq-triage-title {
  color: var(--c-bone);
}

.page-faq .triage-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .triage-step {
  padding-top: 12px;
  border-top: 2px solid rgba(244, 241, 234, 0.34);
}

.page-faq .triage-num {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--c-lime);
}

.page-faq .triage-step h3 {
  margin: 8px 0 8px;
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.24;
  color: var(--c-bone);
}

.page-faq .triage-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.62;
  color: rgba(244, 241, 234, 0.86);
}

.page-faq .triage-foot {
  margin: 24px 0 0;
  padding-top: 14px;
  border-top: 2px solid rgba(244, 241, 234, 0.34);
  font-size: 14px;
  line-height: 1.62;
  color: rgba(244, 241, 234, 0.86);
}

.page-faq .triage-foot a {
  color: var(--c-lime);
  text-underline-offset: 3px;
}

/* ---------- 问答 ---------- */
.page-faq .qa-layout {
  display: grid;
  gap: 24px;
}

.page-faq .qa-intro .section-title,
.page-faq .qa-intro h2 {
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: clamp(24px, 4.2vw, 38px);
  line-height: 1.15;
  color: var(--c-steel);
  margin: 8px 0 12px;
}

.page-faq .qa-intro .prose a {
  color: var(--c-red-deep);
  text-underline-offset: 3px;
}

.page-faq .qa-item {
  background: var(--c-bone);
  border: 2px solid var(--c-rock);
  border-radius: var(--radius);
}

.page-faq .qa-item + .qa-item {
  margin-top: 10px;
}

.page-faq .qa-item[open] {
  border-left: 4px solid var(--c-red);
  background: #fff;
}

.page-faq .qa-item summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-steel);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-item summary::before {
  content: "+";
  flex: none;
  width: 18px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--c-red);
}

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

.page-faq .qa-item summary:focus-visible {
  outline: 2px solid var(--c-lime);
  outline-offset: 2px;
}

.page-faq .qa-body {
  padding: 0 16px 15px 42px;
}

.page-faq .qa-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.66;
  color: var(--c-rock);
}

/* ---------- 联系前准备 ---------- */
.page-faq .faq-prepare {
  background: linear-gradient(180deg, var(--c-paper), var(--c-bone));
  border-top: 3px solid var(--c-rock);
}

.page-faq .prepare-grid {
  display: grid;
  gap: 24px;
}

.page-faq .prepare-main h2 {
  font-family: var(--font-narrow);
  font-weight: 900;
  font-size: clamp(24px, 4.2vw, 38px);
  line-height: 1.15;
  color: var(--c-steel);
  margin: 8px 0 12px;
}

.page-faq .prepare-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .prepare-item {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 12px;
  padding-top: 10px;
  border-top: 2px solid var(--c-rock);
}

.page-faq .prepare-num {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-red);
  line-height: 1.2;
}

.page-faq .prepare-item h3 {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-steel);
}

.page-faq .prepare-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.56;
  color: var(--c-rock);
}

.page-faq .prepare-side {
  background: var(--c-paper);
  padding: 16px;
}

.page-faq .prepare-side-label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-red-deep);
}

.page-faq .prepare-template {
  margin: 10px 0 16px;
  padding: 12px;
  background: var(--c-night);
  color: var(--c-bone);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.75;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

.page-faq .prepare-mail-label {
  margin: 0 0 2px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-cement);
}

.page-faq .prepare-contact {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-steel);
  word-break: break-all;
}

.page-faq .prepare-side-note {
  margin: 0 0 14px;
  padding-top: 10px;
  border-top: 2px dashed var(--c-cement);
  font-size: 13.5px;
  line-height: 1.56;
  color: var(--c-rock);
}

.page-faq .prepare-btn {
  width: 100%;
  text-align: center;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding-block: 24px 44px;
  }

  .page-faq .faq-hero::after {
    width: 42px;
    background: repeating-linear-gradient(90deg, var(--c-red) 0 12px, var(--c-bone) 12px 24px);
  }

  .page-faq .section {
    padding-block: 56px;
  }

  .page-faq .triage-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 7fr 5fr;
    gap: 32px;
    align-items: start;
    margin-top: 22px;
  }

  .page-faq .step-grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
    gap: 20px;
  }

  .page-faq .step-card:nth-child(2) {
    margin-top: 26px;
  }

  .page-faq .step-card:nth-child(3) {
    margin-top: 52px;
  }

  .page-faq .prepare-grid {
    grid-template-columns: 7fr 5fr;
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .checklist-wrap {
    grid-template-columns: 8fr 4fr;
    gap: 24px;
    align-items: start;
  }

  .page-faq .qa-layout {
    grid-template-columns: 4fr 8fr;
    gap: 36px;
    align-items: start;
  }

  .page-faq .section {
    padding-block: 66px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-card,
  .page-faq .seg,
  .page-faq .faq-symptom {
    transition: none;
  }

  .page-faq .step-card:hover {
    transform: none;
    box-shadow: var(--shadow-hard);
  }

  .page-faq .faq-h1 {
    transform: none;
  }
}