.page-faq {
  --faq-line: rgba(90, 104, 102, .5);
  --faq-panel: #0F2A24;
  --faq-soft: rgba(18, 59, 51, .5);
  --group-accent: var(--cyan);
  color: var(--warm);
}

.page-faq #login { --group-accent: var(--cyan); }
.page-faq #index { --group-accent: var(--celadon); }
.page-faq #favorites { --group-accent: var(--orange); }
.page-faq #display { --group-accent: var(--mist); }
.page-faq #support { --group-accent: var(--cyan); }

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero__frame {
  position: relative;
  margin-top: 20px;
  padding: clamp(22px, 4vw, 46px);
  border: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(56, 225, 208, .12), transparent 58%),
    linear-gradient(180deg, rgba(18, 59, 51, .78), rgba(12, 31, 27, .94));
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  inset: -1px;
  pointer-events: none;
  background-image:
    linear-gradient(var(--cyan), var(--cyan)),
    linear-gradient(var(--cyan), var(--cyan)),
    linear-gradient(var(--cyan), var(--cyan)),
    linear-gradient(var(--cyan), var(--cyan)),
    linear-gradient(var(--cyan), var(--cyan)),
    linear-gradient(var(--cyan), var(--cyan)),
    linear-gradient(var(--cyan), var(--cyan)),
    linear-gradient(var(--cyan), var(--cyan));
  background-repeat: no-repeat;
  background-position:
    left top, left top,
    right top, right top,
    left bottom, left bottom,
    right bottom, right bottom;
  background-size:
    22px 2px, 2px 22px,
    22px 2px, 2px 22px,
    22px 2px, 2px 22px,
    22px 2px, 2px 22px;
  opacity: .75;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 17em;
  font-size: var(--fs-h1);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.01em;
}

.page-faq .faq-hero__lead {
  margin-top: 18px;
  max-width: var(--measure);
  color: var(--celadon);
}

.page-faq .faq-hero__strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 30px;
  border: 1px solid var(--faq-line);
  background: var(--faq-line);
}

.page-faq .faq-hero__strip .data-strip__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  padding: 14px 16px;
  background: var(--ink);
}

.page-faq .faq-hero__strip .data-strip__num {
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-hero__strip .data-strip__label {
  color: var(--celadon);
  font-size: 12px;
  letter-spacing: .12em;
}

/* ---------- 分类入口 ---------- */
.page-faq .faq-cats__grid {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

.page-faq .faq-cats__cards {
  display: grid;
  gap: 12px;
}

.page-faq .faq-cat {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--cyan);
  background: var(--faq-soft);
  color: inherit;
  text-decoration: none;
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  background: rgba(18, 59, 51, .82);
  border-left-color: var(--orange);
  transform: translateY(-2px);
}

.page-faq .faq-cat__ico {
  display: block;
  color: var(--cyan);
  line-height: 0;
}

.page-faq .faq-cat__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-faq .faq-cat__no {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-faq .faq-cat__name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
}

.page-faq .faq-cat__desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--celadon);
}

.page-faq .faq-cats__figure {
  margin: 0;
}

.page-faq .faq-cats__figure figcaption,
.page-faq .faq-login-figure figcaption {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--celadon);
}

/* ---------- 两栏主体 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-faq .faq-side {
  padding: 18px 16px;
  border: 1px solid var(--faq-line);
  background: rgba(20, 23, 26, .72);
}

.page-faq .faq-side__title {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--celadon);
}

.page-faq .faq-side__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-side__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  color: var(--celadon);
  font-size: 15px;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-side__link .mono {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-faq .faq-side__link:hover,
.page-faq .faq-side__link:focus-visible {
  color: var(--warm);
  border-left-color: var(--cyan);
}

.page-faq .faq-side__foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
  font-size: 14px;
  line-height: 1.65;
  color: var(--celadon);
}

.page-faq .faq-side__foot a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 51, .45);
}

.page-faq .faq-side__foot a:hover {
  color: var(--warm);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-main > .faq-group + .faq-group,
.page-faq .faq-main > .faq-group + .faq-route,
.page-faq .faq-main > .faq-route + .faq-login-figure,
.page-faq .faq-main > .faq-login-figure + .faq-group {
  margin-top: 56px;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 8px;
  padding-left: 18px;
  margin-bottom: 22px;
  border-left: 3px solid var(--group-accent);
}

.page-faq .faq-group__coord {
  justify-self: start;
  padding: 2px 8px;
  border: 1px solid currentColor;
  color: var(--group-accent);
  font-size: 12px;
  letter-spacing: .14em;
  opacity: .9;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: var(--fs-h3);
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.2;
}

.page-faq .faq-group__head p {
  margin: 0;
  max-width: var(--measure);
  font-size: 15px;
  line-height: 1.7;
  color: var(--celadon);
}

.page-faq .faq-folds {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-fold {
  border-bottom: 1px solid var(--faq-line);
  border-left: 3px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-fold:has(.fold__trigger[aria-expanded="true"]) {
  border-left-color: var(--group-accent);
  background: rgba(18, 59, 51, .35);
}

.page-faq .faq-fold:target {
  border-left-color: var(--orange);
  background: rgba(255, 122, 51, .08);
}

.page-faq .faq-fold__trigger {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  width: 100%;
  min-height: 44px;
  padding: 18px 14px;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-fold__trigger:hover {
  background: rgba(18, 59, 51, .5);
}

.page-faq .faq-fold__trigger::after {
  content: "＋";
  font-size: 18px;
  line-height: 1.2;
  color: var(--cyan);
}

.page-faq .faq-fold__trigger[aria-expanded="true"]::after {
  content: "－";
  color: var(--orange);
}

.page-faq .faq-fold__no {
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--group-accent);
}

.page-faq .faq-fold__q {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-fold__panel {
  padding: 0 14px 20px 14px;
}

.page-faq .faq-fold__panel p {
  margin: 0 0 12px;
  max-width: var(--measure);
  font-size: 16px;
  line-height: 1.75;
  color: var(--celadon);
}

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

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

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--celadon);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--orange);
}

.page-faq .faq-steps li .mono {
  color: var(--warm);
  font-size: 14px;
}

/* ---------- 排查步骤线 ---------- */
.page-faq .faq-route {
  padding: 24px 20px;
  border: 1px solid var(--faq-line);
  background: linear-gradient(120deg, rgba(18, 59, 51, .78), rgba(20, 23, 26, .92));
}

.page-faq .faq-route__title {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--celadon);
}

.page-faq .faq-route__scroll {
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-route__svg {
  display: block;
  width: 100%;
  min-width: 480px;
  height: auto;
  margin-top: 14px;
}

.page-faq .faq-route__svg .rt-line {
  stroke: var(--line);
  stroke-width: 2;
  stroke-dasharray: 6 8;
}

.page-faq .faq-route__svg .rt-tick {
  stroke: var(--cyan);
  stroke-width: 2;
  opacity: .55;
}

.page-faq .faq-route__svg .rt-node {
  fill: var(--ink);
  stroke: var(--cyan);
  stroke-width: 2;
}

.page-faq .faq-route__svg .rt-node--last {
  stroke: var(--orange);
  fill: rgba(255, 122, 51, .18);
}

.page-faq .faq-route__legend {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-route__legend li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 15px;
  line-height: 1.5;
}

.page-faq .faq-route__legend .mono {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orange);
}

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

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: 20px;
}

.page-faq .faq-support__channels {
  display: grid;
  gap: 12px;
  padding: 20px 18px;
  border: 1px solid var(--faq-line);
  background: var(--faq-soft);
}

.page-faq .faq-support__channels .copy-chip {
  width: 100%;
}

.page-faq .faq-support__note {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--celadon);
}

.page-faq .faq-support__list {
  padding: 20px 18px;
  border: 1px solid var(--faq-line);
  background: rgba(20, 23, 26, .72);
}

.page-faq .faq-support__listtitle {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .faq-support__items {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-support__items li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--celadon);
}

.page-faq .faq-support__items li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 9px;
  height: 2px;
  background: var(--orange);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-next {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-next__title {
  margin: 0;
  font-size: var(--fs-h4);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.page-faq .faq-next__links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--faq-line);
  color: var(--warm);
  font-size: 15px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-next__links a:hover,
.page-faq .faq-next__links a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 返回顶部 ---------- */
.page-faq .faq-totop {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 40;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--cyan);
  background: rgba(12, 31, 27, .94);
  color: var(--cyan);
  font: inherit;
  font-size: 14px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-totop:hover,
.page-faq .faq-totop:focus-visible {
  background: var(--cyan);
  color: var(--carbon);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-cats__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-cats__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 48px;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--ticker-h) + var(--utilbar-h) + 16px);
  }

  .page-faq .faq-side__list {
    flex-direction: column;
    flex-wrap: nowrap;
  }

  .page-faq .faq-fold__trigger {
    padding: 20px 18px;
  }

  .page-faq .faq-fold__panel {
    padding: 0 18px 24px 60px;
  }
}

@media (max-width: 400px) {
  .page-faq .faq-hero__frame {
    padding: 20px 16px;
  }

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

  .page-faq .faq-fold__trigger::after {
    grid-column: 2;
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-fold,
  .page-faq .faq-fold__trigger,
  .page-faq .faq-next__links a,
  .page-faq .faq-totop {
    transition: none;
  }

  .page-faq .faq-cat:hover {
    transform: none;
  }
}