.page-faq {
  --faq-gap: clamp(20px, 3vw, 36px);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 52px) 0 clamp(38px, 6vw, 74px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(48vw, 620px);
  height: 100%;
  background: linear-gradient(135deg, rgba(200, 23, 36, 0.72), rgba(200, 23, 36, 0) 68%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(30vw, 320px);
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), rgba(47, 227, 214, 0));
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(20px, 3.4vw, 40px);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 16em;
  font-size: clamp(30px, 5.4vw, 62px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero-main .lede {
  margin-top: 20px;
  max-width: 46em;
}

.page-faq .faq-hero-side {
  position: relative;
  align-self: start;
  padding: 22px 20px 20px;
  background: var(--iron);
  border: 1px solid var(--line);
}

.page-faq .faq-hero-side::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 54px;
  height: 3px;
  background: var(--red);
}

.page-faq .faq-side-label {
  margin: 16px 0 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--text);
}

.page-faq .faq-status-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-status-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
}

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

.page-faq .faq-status-list .tag {
  flex: none;
}

/* ---------- 通用区块 ---------- */
.page-faq .faq-block {
  padding: clamp(38px, 6vw, 78px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .section-head h2,
.page-faq .ticket-head h2 {
  margin: 10px 0 12px;
  font-size: clamp(22px, 3.2vw, 36px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .section-head .lede,
.page-faq .ticket-head .lede {
  max-width: 52em;
  margin: 0;
}

.page-faq .block-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(24px, 4vw, 42px);
}

.page-faq .block-aside {
  align-self: start;
}

/* ---------- 快速定位 ---------- */
.page-faq .faq-diagnose {
  position: relative;
  overflow: hidden;
  padding: clamp(38px, 6vw, 78px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .diagnose-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
}

.page-faq .faq-diagnose::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(10, 10, 14, 0.88), rgba(10, 10, 14, 0.97));
  pointer-events: none;
}

.page-faq .diagnose-inner {
  position: relative;
  z-index: 2;
}

.page-faq .diag-deck {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 36px);
}

.page-faq .diag-card {
  background: var(--iron);
  border: 1px solid var(--line);
  border-top: 2px solid var(--red);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .diag-card:hover {
  border-color: var(--red-bright);
  border-top-color: var(--red-bright);
}

.page-faq .diag-card[open] {
  border-color: rgba(200, 23, 36, 0.85);
  background: #191016;
}

.page-faq .diag-summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .diag-summary:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: -2px;
}

.page-faq .diag-code {
  flex: none;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--cyan);
  font-size: 13px;
}

.page-faq .diag-card[open] .diag-code {
  border-color: var(--red);
  background: var(--red);
  color: var(--white);
}

.page-faq .diag-head {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-faq .diag-name {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .diag-sub {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text);
}

.page-faq .diag-body {
  padding: 0 16px 20px 58px;
  border-top: 1px solid var(--line);
  margin-top: 2px;
  padding-top: 14px;
}

.page-faq .diag-body p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .diag-body .link-sweep {
  font-size: 14px;
}

/* ---------- 步骤路径 ---------- */
.page-faq .step-path {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 0;
}

.page-faq .step-path::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 14px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--red), var(--cyan) 52%, var(--line));
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-bottom: 16px;
}

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

.page-faq .step-toggle {
  position: absolute;
  top: 14px;
  left: 14px;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-faq .step-dot {
  position: relative;
  z-index: 1;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.02em;
  box-shadow: 0 0 0 5px var(--ink), 0 0 14px rgba(47, 227, 214, 0.22);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .step-body {
  min-width: 0;
  padding: 15px 17px 16px;
  background: var(--iron);
  border: 1px solid var(--line);
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .step-body:hover {
  border-color: var(--line);
  background: #191922;
}

.page-faq .step h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .step-line {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .step-line:last-of-type {
  margin-bottom: 0;
}

.page-faq .step-key {
  display: inline-block;
  min-width: 3.4em;
  margin-right: 6px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .step-line .link-sweep {
  color: var(--cyan);
}

.page-faq .step-check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 13px;
  padding: 6px 11px;
  border: 1px solid var(--line);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text);
  cursor: pointer;
  user-select: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .step-check::before {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  border: 1px solid var(--line);
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .step-check:hover {
  border-color: var(--red-bright);
  color: var(--white);
}

.page-faq .step-check .check-off {
  display: none;
}

.page-faq .step-toggle:focus-visible ~ .step-dot {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}

.page-faq .step-toggle:checked ~ .step-body {
  border-color: rgba(53, 224, 138, 0.5);
  background: rgba(53, 224, 138, 0.06);
}

.page-faq .step-toggle:checked ~ .step-dot {
  border-color: var(--green);
  color: var(--green);
  box-shadow: 0 0 0 5px var(--ink), 0 0 16px rgba(53, 224, 138, 0.32);
}

.page-faq .step-toggle:checked ~ .step-body .step-check {
  border-color: var(--green);
  color: var(--green);
}

.page-faq .step-toggle:checked ~ .step-body .step-check::before {
  background: var(--green);
  border-color: var(--green);
}

.page-faq .step-toggle:checked ~ .step-body .step-check .check-on {
  display: none;
}

.page-faq .step-toggle:checked ~ .step-body .step-check .check-off {
  display: inline;
}

/* ---------- 侧栏卡片 ---------- */
.page-faq .channel-card {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--iron);
  border: 1px solid var(--line);
}

.page-faq .channel-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 44px;
  height: 3px;
  background: var(--cyan);
}

.page-faq .channel-card .load-badge {
  display: inline-block;
}

.page-faq .channel-title {
  margin: 16px 0 14px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .channel-map {
  display: block;
  width: 100%;
  height: auto;
  padding: 6px 0 2px;
}

.page-faq .channel-note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

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

.page-faq .check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .check-list .tag {
  flex: none;
  margin-top: 2px;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--red);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 工单区 ---------- */
.page-faq .faq-ticket {
  padding: clamp(38px, 6vw, 78px) 0;
}

.page-faq .ticket-panel {
  position: relative;
  padding: clamp(26px, 4vw, 46px) clamp(20px, 3.2vw, 40px) clamp(24px, 3.6vw, 40px);
  background: var(--iron);
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
}

.page-faq .ticket-corner {
  position: absolute;
  top: -1px;
  right: -1px;
  padding: 6px 12px;
  background: var(--yellow);
  color: #14141B;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .ticket-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-faq .ticket-col-title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-faq .ticket-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .ticket-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .ticket-list .mono {
  flex: none;
  padding-top: 1px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--red-bright);
}

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

.page-faq .contact-list li {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .contact-key {
  display: block;
  margin-bottom: 4px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .contact-value {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .ticket-cta {
  margin-top: 22px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-faq .diag-deck {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .diag-body {
    padding-left: 16px;
  }

  .page-faq .ticket-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 52px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .diag-deck {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }

  .page-faq .diag-card {
    border-left-width: 0;
  }

  .page-faq .diag-card:first-child {
    border-left-width: 1px;
  }

  .page-faq .diag-card[open] {
    border-left-width: 1px;
    margin: -1px 0;
  }

  .page-faq .block-grid {
    grid-template-columns: minmax(0, 1.38fr) minmax(0, 0.82fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .block-grid--rev {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.38fr);
  }

  .page-faq .block-grid--rev .step-path {
    order: 2;
  }

  .page-faq .block-grid--rev .block-aside {
    order: 1;
  }
}

@media (max-width: 639px) {
  .page-faq .faq-hero::before {
    width: 76vw;
    opacity: 0.55;
  }

  .page-faq .step {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 10px;
  }

  .page-faq .step-dot {
    width: 30px;
    height: 30px;
    font-size: 11px;
    box-shadow: 0 0 0 5px var(--ink);
  }

  .page-faq .step-path::before {
    left: 14px;
  }

  .page-faq .step-body {
    padding: 13px 14px 15px;
  }

  .page-faq .step-key {
    min-width: 0;
    margin-right: 8px;
  }

  .page-faq .ticket-corner {
    position: static;
    display: inline-block;
    margin-bottom: 14px;
  }
}
<<<END>>>