/* ===== 问题排查页 faq ===== */

.page-faq {
  --faq-rail: 252px;
  --faq-cut: 18px;
  --faq-accent: var(--gw-pitch);
  --faq-split: clamp(18px, 3vw, 36px);
  background: var(--gw-wall);
  color: var(--gw-ink);
}

.page-faq .gw-shell {
  width: 100%;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-mast {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3.6vw, 42px) 0 clamp(24px, 4vw, 46px);
  border-bottom: 2px solid var(--gw-ink);
}

.page-faq .faq-mast::before {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: min(44%, 500px);
  background-image: repeating-linear-gradient(135deg, rgba(22, 19, 15, 0.07) 0 1px, transparent 1px 13px);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 45%);
  mask-image: linear-gradient(90deg, transparent, #000 45%);
  pointer-events: none;
}

.page-faq .faq-mast > .gw-shell {
  position: relative;
  z-index: 1;
}

.page-faq .gw-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gw-line);
}

.page-faq .gw-breadcrumb a {
  color: var(--gw-line);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease-out, border-color 0.18s ease-out;
}

.page-faq .gw-breadcrumb a:hover {
  color: var(--gw-flame-deep);
  border-bottom-color: var(--gw-flame-deep);
}

.page-faq .gw-breadcrumb [aria-current="page"] {
  color: var(--gw-ink);
  font-weight: 600;
}

.page-faq .faq-mast__grid {
  display: grid;
  gap: var(--faq-split);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-mast .gw-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gw-flame-deep);
  text-transform: uppercase;
}

.page-faq .faq-mast h1.gw-h1 {
  margin: 12px 0 0;
  font-family: var(--gw-font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.04;
  font-size: clamp(1.95rem, 6.2vw, 3.7rem);
  max-width: 17ch;
}

.page-faq .faq-mast .gw-lede {
  margin: 16px 0 0;
  max-width: 48ch;
  font-size: clamp(0.96rem, 1.5vw, 1.06rem);
  line-height: 1.78;
  color: var(--gw-ink-soft);
}

.page-faq .faq-mast__facts {
  display: grid;
  gap: 1px;
  background: var(--gw-brick);
  border: 1px solid var(--gw-ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 13px 15px;
  background: var(--gw-score);
}

.page-faq .faq-fact__num {
  flex: 0 0 auto;
  font-family: var(--gw-font-num);
  font-weight: 700;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--gw-flame-deep);
}

.page-faq .faq-fact__label {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--gw-ink-soft);
}

/* ---------- 主体两栏：索引 + 问答 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: var(--faq-split);
  padding: clamp(24px, 4vw, 52px) 0 clamp(34px, 5vw, 66px);
}

.page-faq .faq-rail {
  display: block;
  border-left: 3px solid var(--gw-ink);
  padding-left: 14px;
}

.page-faq .faq-rail .gw-eyebrow {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gw-line);
  text-transform: uppercase;
}

.page-faq .faq-rail__list {
  display: grid;
  gap: 2px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__item {
  min-width: 0;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid transparent;
  color: var(--gw-ink-soft);
  text-decoration: none;
  font-size: 0.9rem;
  line-height: 1.4;
  transition: background-color 0.18s ease-out, border-color 0.18s ease-out, color 0.18s ease-out;
}

.page-faq .faq-rail__idx {
  flex: 0 0 auto;
  font-family: var(--gw-font-num);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gw-flame-deep);
}

.page-faq .faq-rail__link:hover {
  background: var(--gw-score);
  color: var(--gw-ink);
}

.page-faq .faq-rail__link.is-current {
  background: var(--gw-score);
  border-color: var(--gw-flame);
  color: var(--gw-ink);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  position: relative;
  padding-top: clamp(22px, 3vw, 34px);
  margin-top: clamp(30px, 4.4vw, 58px);
  border-top: 1px solid var(--gw-brick);
}

.page-faq .faq-group:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group--pitch { --faq-accent: var(--gw-pitch); }
.page-faq .faq-group--night { --faq-accent: var(--gw-night); }
.page-faq .faq-group--line { --faq-accent: var(--gw-line); }

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-faq .faq-group__tag {
  flex: 0 0 auto;
  padding: 5px 12px;
  background: var(--faq-accent);
  color: var(--gw-score);
  font-family: var(--gw-font-num);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.page-faq .faq-group__head::after {
  content: "";
  flex: 1 1 60px;
  min-width: 24px;
  height: 4px;
  background: var(--faq-accent);
  opacity: 0.85;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--gw-font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  line-height: 1.18;
  flex: 1 1 100%;
  order: -1;
}

.page-faq .faq-group__intro {
  margin: 12px 0 0;
  max-width: 42ch;
  font-size: 0.98rem;
  line-height: 1.78;
  color: var(--gw-ink-soft);
}

.page-faq .faq-group__layout {
  display: grid;
  gap: var(--faq-split);
}

.page-faq .faq-group__col {
  min-width: 0;
}

/* ---------- 问答手风琴 ---------- */

.page-faq .faq-acc {
  margin-top: 18px;
  border-top: 1px solid var(--gw-brick);
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--gw-brick);
  transition: background-color 0.22s ease-out;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gw-signal);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.22s ease-out;
}

.page-faq .faq-item:hover::before,
.page-faq .faq-item:focus-within::before,
.page-faq .faq-item.is-open::before,
.page-faq .faq-item:has(.faq-item__btn[aria-expanded="true"])::before {
  transform: scaleY(1);
}

.page-faq .faq-item:hover,
.page-faq .faq-item:focus-within,
.page-faq .faq-item.is-open,
.page-faq .faq-item:has(.faq-item__btn[aria-expanded="true"]) {
  background: var(--gw-score);
}

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

.page-faq .faq-item__btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  width: 100%;
  padding: 15px 14px 15px 16px;
  background: transparent;
  border: 0;
  text-align: left;
  color: var(--gw-ink);
  font: inherit;
  cursor: pointer;
}

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--gw-font-num);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gw-flame-deep);
}

.page-faq .faq-item__q {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
}

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border-right: 2px solid var(--gw-ink);
  border-bottom: 2px solid var(--gw-ink);
  transform: rotate(45deg);
  transition: transform 0.22s ease-out;
}

.page-faq .faq-item.is-open .faq-item__mark,
.page-faq .faq-item:has(.faq-item__btn[aria-expanded="true"]) .faq-item__mark {
  transform: rotate(-135deg);
}

.page-faq .faq-acc .gw-acc__panel {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.24s ease-out, opacity 0.22s ease-out;
}

.page-faq .faq-item.is-open .gw-acc__panel,
.page-faq .faq-item:has(.faq-item__btn[aria-expanded="true"]) .gw-acc__panel {
  max-height: 420px;
  opacity: 1;
}

.page-faq .faq-item .gw-acc__body {
  max-width: 40em;
  padding: 0 16px 20px 58px;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--gw-ink-soft);
}

.page-faq .faq-item .gw-acc__body p {
  margin: 0;
}

.page-faq .faq-item .gw-acc__body a {
  color: var(--gw-flame-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--gw-flame-deep);
}

.page-faq .faq-item .gw-acc__body a:hover {
  color: var(--gw-ink);
  border-bottom-color: var(--gw-ink);
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 20px 0 0;
}

.page-faq .faq-media {
  position: relative;
  overflow: hidden;
  background: var(--gw-brick);
  border: 1px solid var(--gw-brick);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(251, 248, 242, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(251, 248, 242, 0.14) 1px, transparent 1px);
  background-size: 26px 26px;
  pointer-events: none;
}

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

.page-faq .faq-figure .gw-media__cap {
  display: block;
  margin-top: 9px;
  font-size: 12px;
  letter-spacing: 0.05em;
  line-height: 1.6;
  color: var(--gw-line);
}

/* ---------- 结尾联系面板 ---------- */

.page-faq .faq-help {
  padding: clamp(28px, 4.5vw, 56px) 0 clamp(34px, 6vw, 76px);
}

.page-faq .faq-help__panel {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.6vw, 46px);
  background: var(--gw-pitch);
  color: var(--gw-score);
  border: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-help__panel::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(38%, 340px);
  height: 100%;
  background-image: repeating-linear-gradient(135deg, rgba(247, 201, 72, 0.12) 0 1px, transparent 1px 14px);
  pointer-events: none;
}

.page-faq .faq-help__panel > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-help__eyebrow {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gw-signal);
  text-transform: uppercase;
}

.page-faq .faq-help__title {
  margin: 12px 0 0;
  font-family: var(--gw-font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: clamp(1.35rem, 3.8vw, 2.2rem);
  line-height: 1.2;
  color: var(--gw-score);
  max-width: 22ch;
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: rgba(251, 248, 242, 0.78);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-faq .faq-help__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 14px;
  border-left: 3px solid var(--gw-signal);
  background: rgba(251, 248, 242, 0.06);
}

.page-faq .faq-help__k {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gw-signal);
  text-transform: uppercase;
}

.page-faq .faq-help__v {
  font-family: var(--gw-font-num);
  font-weight: 700;
  font-size: clamp(0.9rem, 2.4vw, 1.05rem);
  line-height: 1.5;
  color: var(--gw-score);
  word-break: break-all;
}

.page-faq .faq-help .gw-copy {
  align-self: flex-start;
  padding: 5px 9px;
  background: transparent;
  border: 1px dashed rgba(251, 248, 242, 0.4);
  color: var(--gw-score);
  font-family: var(--gw-font-num);
  font-weight: 700;
  font-size: clamp(0.86rem, 2.2vw, 1rem);
  line-height: 1.5;
  cursor: pointer;
  transition: border-color 0.18s ease-out, background-color 0.18s ease-out;
}

.page-faq .faq-help .gw-copy:hover {
  border-color: var(--gw-signal);
  background: rgba(247, 201, 72, 0.12);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: 24px;
}

.page-faq .faq-help__link {
  color: rgba(251, 248, 242, 0.86);
  font-size: 0.9rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(251, 248, 242, 0.4);
  transition: color 0.18s ease-out, border-color 0.18s ease-out;
}

.page-faq .faq-help__link:hover {
  color: var(--gw-signal);
  border-bottom-color: var(--gw-signal);
}

/* ---------- 交互可见性 ---------- */

.page-faq a:focus-visible,
.page-faq button:focus-visible {
  outline: 2px solid var(--gw-flame);
  outline-offset: 2px;
}

.page-faq .faq-help a:focus-visible,
.page-faq .faq-help button:focus-visible {
  outline-color: var(--gw-signal);
}

/* ---------- 断点 ---------- */

@media (max-width: 959px) {
  .page-faq .faq-rail {
    position: sticky;
    top: var(--gw-topbar-h);
    z-index: 4;
    border-left: 0;
    border-bottom: 1px solid var(--gw-brick);
    padding: 10px 0 8px;
    background: var(--gw-wall);
  }

  .page-faq .faq-rail .gw-eyebrow {
    display: none;
  }

  .page-faq .faq-rail__list {
    display: flex;
    gap: 8px;
    margin-top: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    padding-bottom: 4px;
  }

  .page-faq .faq-rail__item {
    flex: 0 0 auto;
  }

  .page-faq .faq-rail__link {
    padding: 7px 11px;
    border: 1px solid var(--gw-brick);
    white-space: nowrap;
  }
}

@media (min-width: 640px) {
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-mast__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(240px, 0.85fr);
    align-items: end;
  }

  .page-faq .faq-group__title {
    flex: 0 1 auto;
    order: 0;
  }

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

  .page-faq .faq-item__q {
    font-size: 1.04rem;
  }

  .page-faq .faq-item .gw-acc__body {
    padding-left: 64px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--gw-topbar-h) + 20px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-group__layout {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 336px);
    align-items: start;
  }

  .page-faq .faq-figure {
    margin-top: 30px;
  }
}