/* ===== 帮助与排查 · page-faq ===== */

.page-faq {
  --faq-node: 34px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 5vw, 48px) 0 clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, transparent, var(--line) 28%, var(--line) 72%, transparent);
  display: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 40px);
  margin-top: 16px;
  align-items: start;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 16px;
  font-size: clamp(2rem, 8vw, 3.85rem);
  line-height: 1.07;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--cream);
}

.page-faq .faq-hero .lede {
  max-width: 54ch;
  color: var(--silver);
}

/* 快速跳转面板 */
.page-faq .faq-jump {
  padding: 16px 14px 12px;
}

.page-faq .faq-jump__title {
  margin: 0 0 10px;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mid);
}

.page-faq .faq-jump__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-jump__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  font-size: 0.92rem;
  color: var(--silver);
  text-decoration: none;
  border-left: 2px solid var(--line);
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-jump__list a::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mid);
  transition: background 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-jump__list a:hover,
.page-faq .faq-jump__list a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: rgba(31, 224, 207, 0.07);
  outline: none;
}

.page-faq .faq-jump__list a:hover::before,
.page-faq .faq-jump__list a:focus-visible::before {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(31, 224, 207, 0.18);
}

/* ---------- 01 三种外部原因 ---------- */
.page-faq .faq-check__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 18px 18px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
}

.page-faq .faq-check__num {
  padding-top: 3px;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-check__body h3 {
  margin: 0 0 8px;
  font-size: 1.04rem;
  font-weight: 800;
  color: var(--cream);
}

.page-faq .faq-check__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.74;
  color: var(--silver);
}

/* ---------- 02 四步排查 ---------- */
.page-faq .faq-steps__figure {
  margin: 0 0 clamp(24px, 4vw, 38px);
}

.page-faq .faq-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: var(--faq-node) 1fr;
  gap: 16px;
}

.page-faq .faq-step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: calc(var(--faq-node) / 2 - 0.5px);
  top: calc(var(--faq-node) + 8px);
  bottom: 2px;
  width: 1px;
  background: var(--line);
}

.page-faq .faq-step__node {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: var(--faq-node);
  height: var(--faq-node);
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--ink);
  color: var(--mid);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-step:has(input:checked) .faq-step__node {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-step__body {
  padding: 2px 0 6px;
}

.page-faq .faq-step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.page-faq .faq-step__head h3 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--cream);
}

.page-faq .faq-step__body > p {
  margin: 0 0 10px;
  font-size: 0.95rem;
  line-height: 1.74;
  color: var(--silver);
}

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

.page-faq .faq-step__body > p .tag {
  margin-right: 8px;
  vertical-align: 1px;
}

/* 勾选 */
.page-faq .faq-step__check {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.78rem;
  color: var(--mid);
  user-select: none;
  transition: color 0.16s var(--ease);
}

.page-faq .faq-step__check input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.page-faq .faq-step__box {
  position: relative;
  flex: none;
  width: 15px;
  height: 15px;
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-step__check input:checked + .faq-step__box {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-step__check input:checked + .faq-step__box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.5px;
  width: 4px;
  height: 8px;
  border: solid var(--ink);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-faq .faq-step__check input:focus-visible + .faq-step__box {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-step__check input:checked ~ .faq-step__text {
  color: var(--cyan);
}

/* ---------- 03 十二类现象 ---------- */
.page-faq .faq-symptoms__figure {
  margin: 0 0 clamp(22px, 3.6vw, 32px);
}

.page-faq .faq-sym__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-sym {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-sym[open] {
  border-color: rgba(31, 224, 207, 0.34);
  background: linear-gradient(180deg, rgba(31, 224, 207, 0.05), transparent 62%), var(--panel);
}

.page-faq .faq-sym > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 15px;
  cursor: pointer;
  list-style: none;
  font-size: 0.95rem;
  color: var(--silver);
}

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

.page-faq .faq-sym > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--mid);
  transition: color 0.18s var(--ease);
}

.page-faq .faq-sym[open] > summary::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .faq-sym__name {
  font-weight: 500;
  color: var(--cream);
}

.page-faq .faq-sym > p {
  margin: 0;
  padding: 12px 15px 15px;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
  line-height: 1.76;
  color: var(--mid);
}

/* ---------- 04 内容中心切换 ---------- */
.page-faq .faq-switch__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-qa {
  position: relative;
  padding: 20px 18px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(31, 224, 207, 0));
}

.page-faq .faq-qa h3 {
  margin: 0 0 10px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--cream);
}

.page-faq .faq-qa p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.76;
  color: var(--silver);
}

/* ---------- 05 转人工 ---------- */
.page-faq .faq-escalate__panel {
  padding: clamp(24px, 4vw, 42px);
}

.page-faq .faq-escalate__panel h2 {
  margin: 14px 0 12px;
  font-size: clamp(1.35rem, 4vw, 2rem);
  line-height: 1.2;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .faq-escalate__panel > p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.75;
  color: rgba(11, 13, 15, 0.74);
}

.page-faq .faq-escalate__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 24px;
}

.page-faq .faq-escalate__grid h3 {
  margin: 0 0 12px;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .faq-escalate__grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-escalate__grid li {
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 8px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(11, 13, 15, 0.76);
}

.page-faq .faq-escalate__grid li::before {
  content: "";
  justify-self: start;
  width: 7px;
  height: 7px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--orange);
}

.page-faq .faq-escalate .copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.page-faq .faq-escalate .copy-value {
  padding: 8px 12px;
  background: rgba(11, 13, 15, 0.06);
  border: 1px dashed rgba(11, 13, 15, 0.24);
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-escalate__grid p {
  margin: 0 0 10px;
  font-size: 0.92rem;
  line-height: 1.72;
  color: rgba(11, 13, 15, 0.72);
}

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

/* ---------- 06 问答索引 ---------- */
.page-faq .faq-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-cat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  align-self: start;
}

.page-faq .faq-cat > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  border-left: 3px solid var(--line);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

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

.page-faq .faq-cat[open] > summary {
  border-left-color: var(--cyan);
  background: rgba(31, 224, 207, 0.05);
}

.page-faq .faq-cat__name {
  font-size: 1rem;
  font-weight: 800;
  color: var(--cream);
}

.page-faq .faq-cat__count {
  margin-left: auto;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .faq-cat__list {
  list-style: none;
  margin: 0;
  padding: 12px 16px 16px 19px;
  display: grid;
  gap: 7px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-cat__list li {
  position: relative;
  padding-left: 14px;
  font-size: 0.89rem;
  line-height: 1.66;
  color: var(--mid);
}

.page-faq .faq-cat__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--mid);
}

/* ---------- 图片兜底 ---------- */
.page-faq .media-frame img {
  max-width: 100%;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-sym__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-faq .faq-escalate__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 32px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-hero::after {
    display: block;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 288px;
    gap: 52px;
  }

  .page-faq .faq-check__list {
    max-width: 900px;
  }

  .page-faq .faq-step {
    grid-template-columns: var(--faq-node) minmax(0, 1fr);
    gap: 22px;
  }

  .page-faq .faq-step__body {
    padding-bottom: 10px;
  }

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

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

  .page-faq .faq-steps__figure {
    margin-bottom: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__list a,
  .page-faq .faq-jump__list a::before,
  .page-faq .faq-step__node,
  .page-faq .faq-step__box,
  .page-faq .faq-sym,
  .page-faq .faq-sym > summary::after,
  .page-faq .faq-cat > summary {
    transition: none;
  }
}