.page-faq {
  --faq-line: 1px solid var(--c-rule);
  --faq-tagbar: var(--c-cyan);
  display: block;
  padding-bottom: clamp(56px, 9vw, 120px);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  margin: clamp(18px, 3.6vw, 34px) 0 clamp(30px, 5vw, 56px);
  padding: clamp(24px, 4.4vw, 54px) clamp(20px, 3.6vw, 50px) clamp(26px, 4.6vw, 58px);
  border: var(--faq-line);
  border-radius: var(--r);
  background:
    linear-gradient(138deg, rgba(29, 91, 255, .24), transparent 46%),
    linear-gradient(316deg, rgba(18, 224, 255, .16), transparent 54%),
    var(--c-panel);
  box-shadow: var(--shadow-deep);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 11px;
  border: 1px dashed rgba(244, 241, 233, .16);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(20px, 3.6vw, 50px);
  width: clamp(56px, 9vw, 108px);
  height: 4px;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-orange));
}

.page-faq .faq-hero__eyebrow {
  position: relative;
  display: inline-block;
  margin: 0 0 clamp(16px, 2.6vw, 24px);
  padding: 6px 12px;
  background: var(--c-paper);
  color: var(--c-void);
  border-radius: var(--r);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  position: relative;
  margin: 0 0 clamp(14px, 2.2vw, 20px);
  max-width: 22ch;
  font-size: clamp(28px, 5.6vw, 52px);
  line-height: 1.14;
  letter-spacing: -.012em;
  color: var(--c-text);
}

.page-faq .faq-hero__lead {
  position: relative;
  margin: 0 0 clamp(22px, 3.4vw, 32px);
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--c-muted);
}

.page-faq .faq-hero__meta {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  padding-top: clamp(16px, 2.4vw, 22px);
  border-top: var(--faq-line);
}

/* 快速定位 */
.page-faq .faq-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.page-faq .faq-toc__link {
  display: inline-block;
  padding: 8px 13px;
  border: var(--faq-line);
  border-radius: var(--r);
  background: rgba(10, 22, 48, .7);
  color: var(--c-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  text-decoration: none;
  transition: color .22s ease, border-color .22s ease, background-color .22s ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
  background: rgba(18, 224, 255, .08);
}

/* 区块 */
.page-faq .faq-block {
  margin-top: clamp(52px, 8.5vw, 108px);
}

.page-faq .faq-block:first-of-type {
  margin-top: 0;
}

.page-faq .faq-block .section-head {
  margin-bottom: clamp(22px, 3.4vw, 34px);
}

/* 图片容器 */
.page-faq .faq-flowfig,
.page-faq .faq-tagfig {
  margin: 0 0 clamp(24px, 3.8vw, 40px);
  border: var(--faq-line);
  border-radius: var(--r);
  background: var(--c-void);
  overflow: hidden;
}

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

.page-faq .faq-flowfig img {
  aspect-ratio: 2 / 1;
}

.page-faq .faq-tagfig img {
  aspect-ratio: 20 / 13;
}

/* 三步步骤条 */
.page-faq .faq-steplist {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 34px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 0;
}

.page-faq .faq-step__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  margin-bottom: 16px;
  border: 1px solid var(--c-cyan);
  border-radius: 50%;
  background: var(--c-void);
  box-shadow: 0 0 0 6px rgba(18, 224, 255, .07);
  color: var(--c-cyan);
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .04em;
}

.page-faq .faq-step:nth-child(2) .faq-step__idx {
  border-color: var(--c-orange);
  color: var(--c-orange);
  box-shadow: 0 0 0 6px rgba(255, 122, 47, .08);
}

.page-faq .faq-step:nth-child(3) .faq-step__idx {
  border-color: var(--c-neon);
  color: var(--c-neon);
  box-shadow: 0 0 0 6px rgba(57, 255, 158, .08);
}

.page-faq .faq-step__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.4;
  color: var(--c-text);
}

.page-faq .faq-step__text {
  margin: 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* 兴趣标签墙 */
.page-faq .faq-tagwall {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: 12px;
}

.page-faq .faq-tag {
  border: var(--faq-line);
  border-radius: var(--r);
  background: var(--c-panel);
  transition: border-color .25s ease, box-shadow .25s ease;
}

.page-faq .faq-tag:nth-child(1) { --faq-tagbar: var(--c-cyan); }
.page-faq .faq-tag:nth-child(2) { --faq-tagbar: var(--c-orange); }
.page-faq .faq-tag:nth-child(3) { --faq-tagbar: var(--c-neon); }
.page-faq .faq-tag:nth-child(4) { --faq-tagbar: var(--c-blue-lift); }
.page-faq .faq-tag:nth-child(5) { --faq-tagbar: var(--c-cyan); }
.page-faq .faq-tag:nth-child(6) { --faq-tagbar: var(--c-orange); }

.page-faq .faq-tag[open] {
  border-color: var(--faq-tagbar);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .38);
  background: linear-gradient(180deg, rgba(18, 224, 255, .08), transparent 68%), var(--c-panel);
}

.page-faq .faq-tag__face {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-left: 3px solid var(--faq-tagbar);
  cursor: pointer;
  list-style: none;
  color: var(--c-text);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .01em;
}

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

.page-faq .faq-tag__face::after {
  content: "+";
  flex: none;
  padding-left: 10px;
  color: var(--c-orange);
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 400;
  line-height: 1;
}

.page-faq .faq-tag[open] .faq-tag__face::after {
  content: "\2013";
  color: var(--c-cyan);
}

.page-faq .faq-tag__face:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 2px;
}

.page-faq .faq-tag__body {
  padding: 0 16px 18px;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--c-muted);
}

.page-faq .faq-tag__body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-tag__rec {
  padding-top: 10px;
  border-top: 1px dashed var(--c-rule);
  color: var(--c-text);
}

.page-faq .faq-tag__rec span {
  display: inline-block;
  margin-right: 8px;
  padding: 3px 7px;
  background: var(--c-neon);
  color: var(--c-void);
  border-radius: var(--r);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
}

/* 手风琴问答 */
.page-faq .faq-acc {
  border-top: var(--faq-line);
}

.page-faq .faq-acc__item {
  border-bottom: var(--faq-line);
}

.page-faq .faq-acc__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 8px 18px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--c-text);
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.6;
  font-weight: 700;
}

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

.page-faq .faq-acc__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--c-cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .3s ease;
}

.page-faq .faq-acc__item[open] .faq-acc__q::before {
  transform: scaleY(1);
}

.page-faq .faq-acc__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  padding-left: 12px;
  color: var(--c-orange);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
}

.page-faq .faq-acc__item[open] .faq-acc__q::after {
  content: "\2013";
  color: var(--c-cyan);
}

.page-faq .faq-acc__q:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 2px;
}

.page-faq .faq-acc__a {
  max-width: 68ch;
  padding: 0 20px 22px 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-faq .faq-acc__a p {
  margin: 0;
}

/* 更新节奏表格 */
.page-faq .faq-tablewrap {
  border: var(--faq-line);
  border-radius: var(--r);
  background: var(--c-panel);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
}

.page-faq .faq-table__caption {
  padding: 14px 16px 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--c-muted);
  caption-side: top;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 14px 16px;
  border-bottom: var(--faq-line);
  text-align: left;
  vertical-align: top;
  font-size: 14.5px;
  line-height: 1.7;
}

.page-faq .faq-table thead th {
  background: rgba(29, 91, 255, .13);
  color: var(--c-muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .12em;
  white-space: nowrap;
}

.page-faq .faq-th-note {
  display: block;
  margin-top: 5px;
  color: transparent;
  font-family: var(--font-sans);
  font-size: 11.5px;
  letter-spacing: 0;
  white-space: normal;
  transition: color .2s ease;
}

.page-faq .faq-table thead th:hover .faq-th-note {
  color: var(--c-cyan);
}

.page-faq .faq-table tbody td:first-child {
  color: var(--c-text);
  font-weight: 700;
}

.page-faq .faq-table tbody td:nth-child(2) {
  color: var(--c-neon);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.page-faq .faq-table tbody td:last-child {
  color: var(--c-muted);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table-note {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 68ch;
  padding-left: 14px;
  border-left: 2px solid var(--c-blue);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* 追踪看板 */
.page-faq .faq-track {
  display: grid;
  gap: 1px;
  border: var(--faq-line);
  border-radius: var(--r);
  background: var(--c-rule);
  overflow: hidden;
}

.page-faq .faq-track__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 18px 20px;
  background: var(--c-panel);
}

.page-faq .faq-track__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--c-cyan);
}

.page-faq .faq-track__val {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--c-muted);
}

/* 联系方式与延伸链接 */
.page-faq .faq-helpgrid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-faq .faq-helpcard {
  padding: clamp(20px, 3vw, 28px);
  border: var(--faq-line);
  border-radius: var(--r);
  background: linear-gradient(160deg, rgba(29, 91, 255, .16), transparent 62%), var(--c-panel);
}

.page-faq .faq-helpcard--links {
  background: var(--c-panel);
}

.page-faq .faq-helpcard__title {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--c-rule);
  font-size: 16px;
  color: var(--c-text);
}

.page-faq .faq-helpcard__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  margin: 0 0 14px;
}

.page-faq .faq-helpcard__row:last-child {
  margin-bottom: 0;
}

.page-faq .faq-helpcard__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--c-orange);
}

.page-faq .faq-helpcard__val {
  font-size: 15px;
  line-height: 1.72;
  color: var(--c-text);
  word-break: break-word;
}

.page-faq .faq-linklist {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-linklist li + li {
  margin-top: 10px;
}

.page-faq .faq-link {
  display: block;
  padding: 10px 12px 10px 14px;
  border-left: 2px solid var(--c-rule);
  color: var(--c-muted);
  font-size: 14.5px;
  line-height: 1.62;
  text-decoration: none;
  transition: color .22s ease, border-color .22s ease, background-color .22s ease;
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  border-left-color: var(--c-cyan);
  background: rgba(18, 224, 255, .07);
  color: var(--c-text);
}

/* 桌面布局 */
@media (min-width: 700px) {
  .page-faq .faq-tagwall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-helpcard__row {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-track__row {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
    padding: 20px 24px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-steplist {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 2.6vw, 34px);
  }

  .page-faq .faq-steplist::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 25px;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--c-rule) 0 9px, transparent 9px 18px);
  }

  .page-faq .faq-step__idx {
    position: relative;
    z-index: 1;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-tagwall {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-helpgrid {
    grid-template-columns: 1.1fr .9fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tag,
  .page-faq .faq-toc__link,
  .page-faq .faq-link,
  .page-faq .faq-acc__q::before,
  .page-faq .faq-th-note {
    transition: none;
  }
}