.page-faq {
  --faq-card: rgba(11, 37, 69, 0.58);
  --faq-ok: var(--green-500);
  --faq-warn: var(--orange-500);
  --faq-info: var(--cyan-400);
  display: block;
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  margin: 0 0 clamp(16px, 3vw, 26px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey-400);
}

.page-faq .faq-crumb a {
  color: var(--cyan-400);
  text-decoration: none;
}

.page-faq .faq-crumb a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  padding: clamp(22px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(43, 224, 166, 0.18), transparent 58%),
    radial-gradient(90% 90% at 0% 100%, rgba(124, 92, 255, 0.18), transparent 62%),
    linear-gradient(150deg, var(--blue-700), var(--blue-900));
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: radial-gradient(rgba(143, 163, 184, 0.34) 1px, transparent 1px);
  background-size: 22px 22px;
  -webkit-mask-image: radial-gradient(85% 75% at 78% 18%, #000 0%, transparent 72%);
  mask-image: radial-gradient(85% 75% at 78% 18%, #000 0%, transparent 72%);
  opacity: 0.6;
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--white-100);
}

.page-faq .faq-lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey-400);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-lamps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey-400);
}

.page-faq .faq-lamp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-lamp i {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.page-faq .faq-lamp--ok i {
  background: var(--green-500);
  box-shadow: 0 0 0 4px rgba(43, 224, 166, 0.16);
}

.page-faq .faq-lamp--warn i {
  background: var(--orange-500);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.16);
}

.page-faq .faq-lamp--info i {
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(56, 217, 255, 0.16);
}

.page-faq .faq-hero-media {
  margin: 0;
}

.page-faq .faq-console-frame {
  border-radius: var(--r-md);
}

.page-faq .faq-console-frame img,
.page-faq .path-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 通用区块 ---------- */
.page-faq .faq-section {
  padding: clamp(38px, 6vw, 72px) 0 0;
}

.page-faq .faq-section h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.3vw, 36px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--white-100);
}

.page-faq .section-lede {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey-400);
}

/* ---------- 30 秒快速判断 ---------- */
.page-faq .quick-grid {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-faq .quick-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(11, 37, 69, 0.75), rgba(6, 20, 38, 0.8));
}

.page-faq .quick-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
}

.page-faq .quick-card--ok::before { background: var(--green-500); }
.page-faq .quick-card--warn::before { background: var(--orange-500); }
.page-faq .quick-card--info::before { background: var(--cyan-400); }

.page-faq .quick-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--grey-400);
}

.page-faq .quick-card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--white-100);
}

.page-faq .quick-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey-400);
}

.page-faq .quick-card p.quick-pass {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--cyan-400);
  opacity: 0.9;
}

/* ---------- 清单 ---------- */
.page-faq .check-groups {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-faq .check-group {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--faq-card);
  overflow: hidden;
}

.page-faq .check-group-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
  padding: 15px 18px;
  background: rgba(234, 242, 250, 0.05);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .check-group-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--green-500);
}

.page-faq .check-group-head h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--white-100);
}

.page-faq .check-group-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--grey-400);
}

.page-faq .check-list {
  list-style: none;
  margin: 0;
  padding: 4px 0;
}

.page-faq .check-item {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  align-items: start;
  gap: 8px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-faq .check-index {
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey-400);
}

.page-faq .check-label {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 5px 0;
  cursor: pointer;
}

.page-faq .check-label input,
.page-faq .check-box {
  grid-column: 1;
  grid-row: 1;
}

.page-faq .check-label input {
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  opacity: 0;
  cursor: pointer;
  z-index: 1;
}

.page-faq .check-box {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1.5px solid var(--line);
  border-radius: 7px;
  background: rgba(6, 20, 38, 0.6);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .check-box::after {
  content: "";
  display: block;
  width: 6px;
  height: 10px;
  margin: 2px auto 0;
  border-right: 2px solid var(--blue-900);
  border-bottom: 2px solid var(--blue-900);
  transform: rotate(42deg) scale(0);
  transition: transform var(--dur) var(--ease);
}

.page-faq .check-label input:checked + .check-box {
  background: var(--green-500);
  border-color: var(--green-500);
}

.page-faq .check-label input:checked + .check-box::after {
  transform: rotate(42deg) scale(1);
}

.page-faq .check-label input:focus-visible + .check-box {
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}

.page-faq .check-body {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .check-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--white-100);
  transition: color var(--dur) var(--ease);
}

.page-faq .check-label input:checked ~ .check-body .check-text {
  color: var(--grey-400);
}

.page-faq .check-pass {
  font-size: 13px;
  line-height: 1.6;
  color: var(--green-500);
  opacity: 0.82;
}

.page-faq .check-note {
  position: relative;
  margin: 0;
  padding: 14px 16px 14px 42px;
  border-left: 2px solid var(--cyan-400);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(56, 217, 255, 0.06);
  font-size: 14px;
  line-height: 1.72;
  color: var(--grey-400);
}

.page-faq .check-note::before {
  content: "!";
  position: absolute;
  left: 16px;
  top: 13px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid var(--cyan-400);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 16px;
  text-align: center;
  color: var(--cyan-400);
}

/* ---------- 异常对照 ---------- */
.page-faq .fault-list {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .fault {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--faq-card);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .fault[open] {
  border-color: rgba(43, 224, 166, 0.45);
}

.page-faq .fault summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .fault-tag {
  flex: none;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.page-faq .fault-tag--orange { color: var(--orange-500); }
.page-faq .fault-tag--violet { color: var(--violet-300); }
.page-faq .fault-tag--green { color: var(--green-500); }

.page-faq .fault-title {
  flex: 1 1 200px;
  min-width: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white-100);
}

.page-faq .fault-mark {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-left: auto;
}

.page-faq .fault-mark::before,
.page-faq .fault-mark::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 1px;
  width: 16px;
  height: 1.5px;
  background: var(--cyan-400);
  transition: transform var(--dur) var(--ease);
}

.page-faq .fault-mark::after {
  transform: rotate(90deg);
}

.page-faq .fault[open] .fault-mark::after {
  transform: rotate(0deg);
}

.page-faq .fault-body {
  padding: 0 18px 18px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .fault-body p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey-400);
}

.page-faq .fault-body ul {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .fault-body li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--white-100);
}

.page-faq .fault-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--green-500);
  opacity: 0.85;
}

/* ---------- 两击路径 ---------- */
.page-faq .path-layout {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-faq .path-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .path-step {
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 22px;
}

.page-faq .path-step:last-child {
  padding-bottom: 0;
}

.page-faq .path-step::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 18px;
  bottom: 0;
  width: 1.5px;
  background: linear-gradient(180deg, var(--green-500), rgba(43, 224, 166, 0.08));
}

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

.page-faq .path-dot {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 50%;
  border: 1.5px solid var(--green-500);
  background: rgba(43, 224, 166, 0.14);
}

.page-faq .path-dot::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background: var(--green-500);
}

.page-faq .path-step-body h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--white-100);
}

.page-faq .path-step-body p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey-400);
}

.page-faq .path-media {
  margin: 0;
}

.page-faq .path-media .img-frame {
  border-radius: var(--r-md);
}

/* ---------- 收藏 ---------- */
.page-faq .favorite-grid {
  margin-top: 28px;
}

.page-faq .favorite-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.page-faq .favorite-card h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white-100);
}

.page-faq .favorite-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey-400);
}

/* ---------- 提交排查信息 ---------- */
.page-faq .contact-panel {
  display: grid;
  gap: 24px;
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(110% 120% at 100% 0%, rgba(43, 224, 166, 0.16), transparent 60%),
    linear-gradient(150deg, rgba(16, 52, 92, 0.9), rgba(6, 20, 38, 0.95));
}

.page-faq .contact-copy h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--white-100);
}

.page-faq .contact-copy > p {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--grey-400);
}

.page-faq .contact-lines {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .contact-lines li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .contact-lines .contact-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--green-500);
}

.page-faq .contact-lines .contact-val {
  font-size: 14px;
  line-height: 1.65;
  color: var(--white-100);
  word-break: break-word;
}

.page-faq .contact-tip {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey-400);
}

.page-faq .contact-template {
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: rgba(6, 20, 38, 0.55);
}

.page-faq .contact-template h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--white-100);
}

.page-faq .template-list {
  list-style: none;
  margin: 16px 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
  counter-reset: none;
}

.page-faq .template-list li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--grey-400);
}

.page-faq .tpl-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border-radius: 6px;
  background: rgba(56, 217, 255, 0.14);
  border: 1px solid rgba(56, 217, 255, 0.4);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan-400);
}

/* ---------- 尾注 ---------- */
.page-faq .faq-footnote {
  margin: clamp(30px, 5vw, 52px) 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.8;
  color: var(--grey-400);
}

.page-faq .faq-footnote a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 217, 255, 0.35);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .check-item {
    grid-template-columns: 38px minmax(0, 1fr);
    padding: 12px 20px;
  }

  .page-faq .check-label {
    gap: 4px 14px;
  }

  .page-faq .contact-lines li {
    grid-template-columns: 60px minmax(0, 1fr);
  }
}

@media (min-width: 780px) {
  .page-faq .quick-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-faq .path-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
    align-items: center;
    gap: 36px;
  }
}

@media (min-width: 940px) {
  .page-faq .contact-panel {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .check-box,
  .page-faq .check-box::after,
  .page-faq .check-text,
  .page-faq .fault-mark::before,
  .page-faq .fault-mark::after,
  .page-faq .fault {
    transition: none;
  }
}