.page-faq {
  --faq-toc-w: 168px;
  --faq-ink-soft: rgba(246, 241, 230, 0.82);
  --faq-ink-mute: rgba(159, 176, 192, 0.95);
  --faq-card-bg: rgba(18, 41, 61, 0.62);
  padding-block: clamp(20px, 3vw, 36px) clamp(72px, 10vw, 128px);
  color: var(--paper);
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--fog);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-faq .breadcrumbs a {
  color: var(--fog);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover {
  color: var(--cyan);
}

.page-faq .breadcrumbs [aria-current="page"] {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: clamp(26px, 4vw, 48px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0;
}

.page-faq .faq-hero h1 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 64ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-band {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-band .tag {
  display: inline-block;
  padding: 5px 14px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--fog);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.5vw, 40px);
  padding-top: clamp(26px, 4vw, 52px);
}

/* ---------- 章节索引 ---------- */
.page-faq .faq-toc {
  position: static;
  align-self: start;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--faq-card-bg);
}

.page-faq .faq-toc .toc__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 14px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-faq .toc__link {
  display: block;
  padding: 5px 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--fog);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}

.page-faq .toc__link::before {
  content: "";
  display: inline-block;
  width: 0;
  height: 1px;
  margin-right: 0;
  vertical-align: middle;
  background: currentColor;
  transition: width 0.2s var(--ease), margin-right 0.2s var(--ease);
}

.page-faq .toc__link:hover {
  color: var(--paper);
}

.page-faq .toc__link[aria-current="true"] {
  color: var(--cyan);
}

.page-faq .toc__link[aria-current="true"]::before {
  width: 12px;
  margin-right: 6px;
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding-block: clamp(28px, 4.5vw, 52px);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--bar-h) + 28px);
}

.page-faq .faq-main > .faq-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-section h2 {
  margin: 0 0 14px;
  max-width: 24ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-section > p {
  margin: 0 0 1.2em;
  max-width: 68ch;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-sub {
  margin: 26px 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-note {
  margin-top: 22px;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--fog);
}

.page-faq a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 224, 208, 0.35);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

.page-faq .faq-hint {
  margin: 18px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--fog);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-folds {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-fold {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--faq-card-bg);
  overflow: hidden;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-fold:hover {
  border-color: #2b5476;
  transform: translateY(-2px);
}

.page-faq .faq-fold__headwrap {
  margin: 0;
  font: inherit;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-fold .fold__head {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 6px 16px;
  width: 100%;
  padding: 18px 20px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.page-faq .faq-fold__q {
  grid-column: 1;
  grid-row: 1;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.42;
  color: var(--paper);
}

.page-faq .faq-fold__head .fold__chev {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  color: var(--cyan);
}

.page-faq .faq-fold__a {
  grid-column: 1 / -1;
  grid-row: 2;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-faq .faq-fold .fold__inner {
  padding: 4px 20px 22px;
}

/* ---------- 步骤列表 ---------- */
.page-faq .step-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 26px;
  padding: 0 8px;
  border: 1px solid rgba(63, 224, 208, 0.28);
  border-radius: var(--radius-sm);
  background: rgba(63, 224, 208, 0.1);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .step__text {
  padding-top: 2px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--faq-ink-soft);
}

.page-faq .faq-checklist .step__num {
  border-color: rgba(255, 178, 92, 0.3);
  background: rgba(255, 178, 92, 0.1);
  color: var(--amber);
}

/* ---------- 图文分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
  margin-top: 24px;
}

.page-faq .media-frame {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-deep);
  overflow: hidden;
}

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

.page-faq .media-frame__caption {
  padding: 10px 16px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.04em;
  color: var(--fog);
}

/* ---------- 阅读形态面板 ---------- */
.page-faq .faq-formats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: clamp(18px, 3vw, 28px);
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-format__k {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8a5a12;
}

.page-faq .faq-format p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: rgba(10, 26, 43, 0.84);
}

/* ---------- 登录方式 ---------- */
.page-faq .faq-methods {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-method {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(7, 19, 32, 0.5);
}

.page-faq .faq-method__k {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-method p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

/* ---------- 状态提示 ---------- */
.page-faq .faq-status-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-status {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(7, 19, 32, 0.5);
}

.page-faq .faq-status .status-dot {
  grid-column: 1;
  grid-row: 1;
  align-self: center;
}

.page-faq .faq-status__label {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
}

.page-faq .faq-status__desc {
  grid-column: 2;
  grid-row: 2;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--fog);
}

.page-faq .faq-status--ok .faq-status__label {
  color: var(--ok);
}

.page-faq .faq-status--warn .faq-status__label {
  color: var(--amber);
}

.page-faq .faq-status--err .faq-status__label {
  color: var(--err);
}

/* ---------- 下载问题卡片 ---------- */
.page-faq .faq-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-card {
  padding: 20px 20px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--faq-card-bg);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-card:hover {
  border-color: #2b5476;
  transform: translateY(-2px);
}

.page-faq .faq-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.35;
  color: var(--amber);
}

.page-faq .faq-card p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--faq-ink-soft);
}

/* ---------- 联系信息 ---------- */
.page-faq .faq-need {
  display: grid;
  gap: 10px;
  margin: 20px 0 24px;
  padding: 0 0 0 4px;
  list-style: none;
  counter-reset: need;
}

.page-faq .faq-need li {
  position: relative;
  padding-left: 26px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--faq-ink-soft);
}

.page-faq .faq-need li::before {
  counter-increment: need;
  content: counter(need, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-contact {
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-contact__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #8a5a12;
}

.page-faq .faq-contact__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0;
}

.page-faq .faq-contact__item {
  display: grid;
  grid-template-columns: minmax(0, 6.5em) minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--paper-2);
}

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

.page-faq .faq-contact__item dt {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: rgba(10, 26, 43, 0.6);
}

.page-faq .faq-contact__item dd {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-contact__more {
  margin: 18px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(10, 26, 43, 0.78);
}

.page-faq .faq-contact a {
  color: #0b5f5a;
  border-bottom-color: rgba(11, 95, 90, 0.4);
}

.page-faq .faq-contact a:hover {
  color: #8a5a12;
  border-bottom-color: #8a5a12;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-formats {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }

  .page-faq .faq-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-contact__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-contact__item {
    grid-template-columns: 1fr;
    gap: 6px;
    padding-bottom: 0;
    border-bottom: 0;
    border-left: 2px solid var(--paper-2);
    padding-left: 12px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-toc-w) minmax(0, 1fr);
    column-gap: clamp(30px, 4vw, 64px);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
    padding: 16px 16px 14px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
  }

  .page-faq .toc__link {
    padding: 8px 0;
    white-space: normal;
    line-height: 1.5;
    border-bottom: 1px solid var(--line);
  }

  .page-faq .faq-toc__list li:last-child .toc__link {
    border-bottom: 0;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-faq .faq-split--wide-media {
    grid-template-columns: minmax(0, 6fr) minmax(0, 7fr);
  }

  .page-faq .faq-split__media {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-folds {
    gap: 14px;
  }

  .page-faq .faq-fold .fold__head {
    padding: 22px 24px;
  }

  .page-faq .faq-fold .fold__inner {
    padding: 4px 24px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-fold,
  .page-faq .faq-card,
  .page-faq .toc__link,
  .page-faq .toc__link::before {
    transition: none;
  }

  .page-faq .faq-fold:hover,
  .page-faq .faq-card:hover {
    transform: none;
  }
}