.page-faq {
  --faq-gap: clamp(20px, 4vw, 40px);
  --faq-sticky: 104px;
  color: var(--graphite);
  background: var(--cream);
  overflow-x: clip;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-head);
  color: var(--ink-900);
  letter-spacing: -0.01em;
}

.page-faq h1 {
  font-size: clamp(30px, 6.2vw, 54px);
  line-height: 1.1;
  font-weight: 800;
  margin: 10px 0 16px;
  max-width: 15em;
}

.page-faq h2 {
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.18;
  font-weight: 800;
  margin: 8px 0 12px;
}

.page-faq h3 {
  font-size: clamp(18px, 3vw, 21px);
  line-height: 1.3;
  font-weight: 700;
  margin: 0 0 10px;
}

.page-faq p {
  margin: 0 0 12px;
  line-height: 1.68;
}

.page-faq .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* 面包屑 */
.page-faq .faq-crumb-wrap {
  padding-top: 14px;
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: 18px 0 clamp(36px, 6vw, 68px);
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(to right, rgba(11, 43, 38, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(11, 43, 38, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-lede {
  font-size: clamp(15px, 2.4vw, 17px);
  max-width: 40em;
  color: var(--graphite);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.page-faq .faq-hero-aside {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-left: 4px solid var(--copper);
  border-radius: var(--radius-card);
  padding: 20px 20px 18px;
  box-shadow: var(--shadow-card);
}

.page-faq .faq-aside-title {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--copper-ink);
  margin: 0 0 6px;
}

.page-faq .faq-aside-big {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 27px);
  line-height: 1.15;
  color: var(--ink-900);
  margin: 0 0 14px;
}

.page-faq .faq-aside-big .mono {
  font-size: 0.82em;
  letter-spacing: 0.04em;
}

.page-faq .faq-aside-list {
  list-style: none;
  margin: 0;
  padding: 12px 0 0;
  border-top: 1px dashed var(--line-strong);
  display: grid;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.5;
}

.page-faq .faq-aside-num {
  display: inline-block;
  min-width: 2.6em;
  color: var(--copper-ink);
  font-weight: 600;
}

/* 章节标题组 */
.page-faq .faq-sec-head {
  max-width: 44em;
  margin-bottom: clamp(20px, 3.4vw, 32px);
}

.page-faq .faq-sec-sub {
  font-size: 15.5px;
  color: var(--graphite);
  margin: 0;
}

/* 三步进度带 */
.page-faq .faq-steps {
  padding-block: clamp(40px, 6.5vw, 76px);
}

.page-faq .faq-progress-line {
  display: none;
  color: var(--copper);
  margin: 0 0 14px;
}

.page-faq .faq-progress-line svg {
  display: block;
  width: 100%;
  height: 28px;
}

.page-faq .faq-steps-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
  min-width: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 22px 20px 18px;
  box-shadow: var(--shadow-card);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  width: 46px;
  height: 4px;
  background: var(--copper);
  border-radius: 0 0 3px 3px;
}

.page-faq .faq-step--flag::before {
  background: var(--orange);
}

.page-faq .faq-step--flag {
  border-color: rgba(217, 95, 31, 0.35);
}

.page-faq .faq-step-no {
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--copper-ink);
  margin: 0 0 6px;
}

.page-faq .faq-step > p {
  font-size: 15px;
}

.page-faq .faq-step .tag {
  margin: 0 0 10px;
}

.page-faq .faq-step-done {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.55;
  color: var(--graphite);
}

.page-faq .faq-step-figure {
  margin: 0 0 clamp(36px, 6vw, 68px);
}

/* 折叠面板 */
.page-faq .faq-acc {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-faq .faq-acc + .faq-acc {
  margin-top: 12px;
}

.page-faq .faq-acc summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 46px 15px 18px;
  position: relative;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.4;
  color: var(--ink-900);
}

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

.page-faq .faq-acc summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--copper);
}

.page-faq .faq-acc[open] summary::after {
  content: "−";
}

.page-faq .faq-acc[open] {
  border-left: 3px solid var(--copper);
}

.page-faq .faq-acc summary:hover {
  color: var(--copper-ink);
}

.page-faq .faq-acc-no {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--copper-ink);
  padding-top: 2px;
}

.page-faq .faq-acc-body {
  padding: 0 18px 18px;
  font-size: 14.5px;
  color: var(--graphite);
}

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

.page-faq .faq-acc-body strong {
  color: var(--ink-900);
}

.page-faq .faq-acc-body a {
  color: var(--copper-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-acc-steps {
  list-style: none;
  margin: 10px 0 12px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-acc-steps li {
  position: relative;
  padding-left: 20px;
  line-height: 1.6;
}

.page-faq .faq-acc-steps li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--copper);
  border-radius: 50%;
}

.page-faq .faq-acc-foot {
  font-size: 13.5px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  color: var(--graphite);
  margin: 0;
}

/* 分栏 */
.page-faq .faq-split {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-side p {
  font-size: 15.5px;
}

.page-faq .faq-side-note {
  font-size: 13.5px;
  color: var(--copper-ink);
  border-left: 3px solid var(--copper-300);
  padding-left: 12px;
  margin-top: 16px;
}

/* 设备与登录 */
.page-faq .faq-device-grid {
  display: grid;
  gap: var(--faq-gap);
}

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

.page-faq .faq-four-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-card);
  padding: 16px 16px 14px;
  min-width: 0;
}

.page-faq .faq-four-key {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--copper-ink);
  margin: 0 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-four-where {
  font-size: 14px;
  color: var(--ink-900);
  margin: 0 0 8px;
}

.page-faq .faq-four-why {
  font-size: 13.5px;
  color: var(--graphite);
  margin: 0;
}

.page-faq .faq-device-figure {
  margin: 0;
}

.page-faq .faq-link-row {
  margin: 22px 0 0;
  font-size: 14.5px;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px dashed var(--line-strong);
  border-radius: 10px;
}

.page-faq .faq-link-row a {
  color: var(--copper-ink);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 面板与记录 */
.page-faq .faq-panel-grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-panel-table {
  display: grid;
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-faq .faq-panel-col {
  background: var(--paper);
  padding: 16px 16px 14px;
  min-width: 0;
}

.page-faq .faq-panel-head {
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--ink-900);
  margin: 0 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .faq-panel-head::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--copper);
  border-radius: 2px;
  flex: 0 0 auto;
}

.page-faq .faq-panel-col p:last-child {
  margin: 0;
  font-size: 13.8px;
}

.page-faq .faq-record-card {
  background: var(--ink-700);
  color: var(--cream);
  border-radius: var(--radius-card);
  padding: 22px 20px;
  border-bottom: 4px solid var(--copper);
}

.page-faq .faq-record-label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper-300);
  margin: 0 0 10px;
}

.page-faq .faq-record-value {
  font-size: clamp(19px, 3.4vw, 24px);
  letter-spacing: 0.06em;
  color: var(--paper);
  background: rgba(251, 248, 242, 0.08);
  border: 1px dashed rgba(217, 178, 124, 0.55);
  border-radius: 8px;
  padding: 12px 14px;
  margin: 0 0 12px;
  overflow-wrap: anywhere;
}

.page-faq .faq-record-note {
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(245, 240, 230, 0.82);
  margin: 0 0 16px;
}

/* 帮助文档 */
.page-faq .faq-docs-grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

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

.page-faq .faq-docs-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 14px 16px;
  min-width: 0;
}

.page-faq .faq-docs-count {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  min-width: 44px;
  height: 34px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
  background: rgba(176, 122, 42, 0.14);
  border: 1px solid rgba(176, 122, 42, 0.45);
  border-radius: 6px;
}

.page-faq .faq-docs-text {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.page-faq .faq-docs-text strong {
  font-family: var(--font-head);
  font-size: 16px;
  color: var(--ink-900);
}

.page-faq .faq-docs-text span {
  font-size: 13.2px;
  line-height: 1.5;
  color: var(--graphite);
}

/* 联系准备 */
.page-faq .faq-prepare {
  background-color: var(--ink-900);
  background-image:
    linear-gradient(to right, rgba(175, 196, 186, 0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(175, 196, 186, 0.09) 1px, transparent 1px);
  background-size: 56px 56px;
  color: var(--cream);
}

.page-faq .faq-prepare h2 {
  color: var(--paper);
}

.page-faq .faq-prepare .section-index {
  color: var(--copper-300);
}

.page-faq .faq-prepare-grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-prepare-lede {
  color: rgba(245, 240, 230, 0.82);
  font-size: 15px;
  max-width: 34em;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 30px;
  line-height: 1.6;
  font-size: 14.5px;
  color: rgba(245, 240, 230, 0.9);
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 14px;
  height: 14px;
  border: 1px solid var(--copper-300);
  border-radius: 3px;
  background: rgba(217, 178, 124, 0.12);
}

.page-faq .faq-prepare-note {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(217, 178, 124, 0.4);
  font-size: 13.5px;
  color: rgba(245, 240, 230, 0.72);
}

.page-faq .faq-contact-card {
  background: var(--paper);
  color: var(--ink-900);
  border-radius: var(--radius-card);
  border-top: 4px solid var(--copper);
  padding: 22px 20px;
  box-shadow: var(--shadow-card);
}

.page-faq .faq-contact-label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper-ink);
  margin: 0 0 12px;
}

.page-faq .faq-contact-line {
  margin: 0 0 8px;
  font-size: 16px;
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-line a {
  color: var(--ink-900);
  text-decoration: underline;
  text-decoration-color: var(--copper-300);
  text-underline-offset: 4px;
}

.page-faq .faq-contact-addr {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--graphite);
  padding: 10px 0 0;
  border-top: 1px solid var(--line);
  margin: 10px 0 12px;
}

.page-faq .faq-contact-note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--graphite);
  margin: 0 0 16px;
}

/* 中等屏 */
@media (min-width: 620px) {
  .page-faq .faq-four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

/* 桌面 */
@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.75fr) minmax(250px, 0.8fr);
    align-items: end;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-hero-aside {
    margin-bottom: 6px;
  }

  .page-faq .faq-progress-line {
    display: block;
  }

  .page-faq .faq-steps-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-faq .faq-step {
    padding: 26px 22px 20px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-device-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(28px, 4vw, 48px);
    align-items: start;
  }

  .page-faq .faq-panel-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.7fr);
    gap: clamp(24px, 3.5vw, 40px);
  }

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

  .page-faq .faq-record-card {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-docs-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(28px, 5vw, 56px);
  }

  .page-faq .faq-prepare-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-acc summary::after {
    transition: none;
  }
}
<<<END>>>