.page-faq {
  --faq-gap: 16px;
  --faq-h1: clamp(30px, 7.2vw, 64px);
  --faq-h2: clamp(23px, 4.6vw, 40px);
  --faq-h3: clamp(18px, 2.4vw, 22px);
  display: block;
  background: var(--green-900);
  color: var(--ice);
  font-family: var(--font-body);
}

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

.page-faq .wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--topbar-h) + 36px) 0 46px;
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(232, 255, 77, 0.14), transparent 58%),
    linear-gradient(168deg, var(--green-900) 0%, var(--green-800) 62%, var(--green-700) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -20%;
  width: 64%;
  height: 160%;
  background: repeating-linear-gradient(105deg, rgba(232, 255, 77, 0.1) 0 2px, transparent 2px 17px);
  transform: rotate(6deg);
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 80%);
  mask-image: linear-gradient(to bottom, #000, transparent 80%);
}

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

.page-faq .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  font-family: var(--font-mono);
}

.page-faq .crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-faq .crumbs__link {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

.page-faq .crumbs__link:hover {
  color: var(--lime);
}

.page-faq .crumbs__sep {
  color: var(--line-strong);
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--faq-h1);
  line-height: 1.05;
  letter-spacing: -0.012em;
  color: var(--white);
  max-width: 18em;
}

.page-faq .faq-hero .lede {
  margin: 20px 0 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ice);
  opacity: 0.9;
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 16px;
  background: rgba(6, 29, 22, 0.78);
}

.page-faq .faq-fact__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-fact__txt {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

@media (min-width: 720px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(3, 1fr);
    max-width: 780px;
  }
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-sec {
  padding: 50px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-head {
  margin-bottom: 26px;
}

.page-faq .faq-head__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-faq .faq-head__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: var(--faq-h2);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--white);
  max-width: 24em;
}

.page-faq .faq-head__lead {
  margin: 14px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 五步排查 ---------- */

.page-faq .faq-work {
  background: linear-gradient(180deg, var(--green-900) 0%, #082b21 100%);
}

.page-faq .faq-work__figure {
  margin: 0 0 24px;
  padding: 0;
  border: 1px solid var(--line);
  background: rgba(42, 59, 54, 0.35);
  overflow: hidden;
  clip-path: var(--cut);
  position: relative;
}

.page-faq .faq-work__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

.page-faq .faq-work__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: rgba(6, 29, 22, 0.86);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-faq .faq-work__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

.page-faq .faq-index {
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  background: rgba(10, 59, 46, 0.5);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--lime);
}

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

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: center;
  gap: 10px;
  padding: 9px 8px;
  border-left: 2px solid transparent;
  color: var(--ice);
  font-size: 14px;
  text-decoration: none;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--lime-soft);
  border-left-color: var(--lime);
  color: var(--white);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--lime);
}

.page-faq .faq-index__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-strong);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-steps {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-step {
  border: 1px solid var(--line);
  background: rgba(20, 90, 60, 0.16);
  clip-path: var(--cut-sm);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-step[open] {
  border-color: rgba(232, 255, 77, 0.4);
  background: linear-gradient(150deg, rgba(20, 90, 60, 0.38), rgba(10, 59, 46, 0.55));
}

.page-faq .faq-step__head {
  display: grid;
  grid-template-columns: 42px 1fr 22px;
  align-items: center;
  gap: 12px;
  padding: 16px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-step__title {
  font-size: 17px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .faq-step__toggle {
  position: relative;
  width: 18px;
  height: 18px;
  justify-self: end;
}

.page-faq .faq-step__toggle::before,
.page-faq .faq-step__toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lime);
  transform: translate(-50%, -50%);
  transition: transform 0.28s var(--ease), opacity 0.28s var(--ease);
}

.page-faq .faq-step__toggle::before {
  width: 14px;
  height: 2px;
}

.page-faq .faq-step__toggle::after {
  width: 2px;
  height: 14px;
}

.page-faq .faq-step[open] .faq-step__toggle::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-step__body {
  padding: 16px 16px 18px;
  border-top: 1px dashed var(--line-strong);
}

.page-faq .faq-step__acts {
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step__acts li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ice);
}

.page-faq .faq-step__acts li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 7px;
  height: 7px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-faq .faq-step__done {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 11px 13px;
  background: var(--lime-soft);
  border-left: 3px solid var(--lime);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ice);
}

@media (min-width: 900px) {
  .page-faq .faq-sec {
    padding: 76px 0;
  }

  .page-faq .faq-head {
    margin-bottom: 34px;
  }

  .page-faq .faq-work__grid {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--topbar-h) + 24px);
  }

  .page-faq .faq-step__head {
    grid-template-columns: 56px 1fr 22px;
    padding: 18px 20px;
  }

  .page-faq .faq-step__body {
    padding: 18px 20px 22px;
  }
}

/* ---------- 苹果兼容 ---------- */

.page-faq .faq-apple {
  background: linear-gradient(140deg, var(--green-800) 0%, var(--green-900) 72%);
}

.page-faq .faq-apple__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-faq .faq-apple__figure {
  position: relative;
  margin: 0 auto;
  width: 100%;
  max-width: 340px;
  border: 1px solid var(--line);
  background: rgba(42, 59, 54, 0.35);
  overflow: hidden;
  clip-path: var(--cut);
}

.page-faq .faq-apple__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-faq .faq-apple__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: rgba(6, 29, 22, 0.86);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-faq .faq-matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-matrix__cell {
  padding: 16px;
  background: rgba(6, 29, 22, 0.8);
  border-top: 2px solid transparent;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-matrix__cell:hover {
  background: rgba(20, 90, 60, 0.55);
  border-top-color: var(--lime);
}

.page-faq .faq-matrix__plat {
  margin: 0;
  font-size: 15px;
  font-weight: 500;
  color: var(--white);
}

.page-faq .faq-matrix__ver {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ice);
}

.page-faq .faq-matrix__note {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-apple__notes {
  margin-top: 22px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--lime);
  background: rgba(10, 59, 46, 0.42);
}

.page-faq .faq-apple__notesTitle {
  margin: 0 0 12px;
  font-size: var(--faq-h3);
  font-weight: 400;
  color: var(--white);
}

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

.page-faq .faq-apple__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ice);
}

.page-faq .faq-apple__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background: var(--lime);
}

.page-faq .faq-apple__list strong {
  color: var(--white);
  font-weight: 500;
}

@media (min-width: 620px) {
  .page-faq .faq-matrix {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-apple__grid {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-apple__figure {
    max-width: none;
  }
}

/* ---------- 权限清单 ---------- */

.page-faq .faq-permsec {
  background: var(--green-900);
}

.page-faq .faq-perms {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-perm {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(42, 59, 54, 0.6), rgba(10, 59, 46, 0.45));
  clip-path: var(--cut);
}

.page-faq .faq-perm__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-faq .faq-perm__title {
  margin: 0;
  font-size: var(--faq-h3);
  font-weight: 400;
  line-height: 1.35;
  color: var(--white);
}

.page-faq .faq-perm__use {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--ice);
}

.page-faq .faq-perm__path {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mist);
  word-break: break-word;
}

@media (min-width: 780px) {
  .page-faq .faq-perms {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

/* ---------- 现象对照 ---------- */

.page-faq .faq-symsec {
  background: linear-gradient(180deg, var(--green-900) 0%, #07241c 100%);
}

.page-faq .faq-sym {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-sym__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 16px;
  background: rgba(6, 29, 22, 0.78);
  transition: background 0.25s var(--ease);
}

.page-faq .faq-sym__row:hover {
  background: rgba(20, 90, 60, 0.48);
}

.page-faq .faq-sym__sym {
  display: flex;
  align-items: center;
}

.page-faq .faq-sym__cause {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ice);
}

.page-faq .faq-sym__act {
  margin: 0;
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-sym__act::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 7px;
  height: 7px;
  background: var(--orange);
  transform: rotate(45deg);
}

@media (min-width: 860px) {
  .page-faq .faq-sym__row {
    grid-template-columns: 168px minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 24px;
    align-items: start;
    padding: 18px 22px;
  }
}

/* ---------- 反馈 ---------- */

.page-faq .faq-fbsec {
  background: var(--green-900);
  padding-bottom: 68px;
}

.page-faq .faq-feedback {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 26px 20px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(150deg, rgba(20, 90, 60, 0.45), rgba(6, 29, 22, 0.92));
  clip-path: var(--cut);
}

.page-faq .faq-feedback__lead {
  margin: 14px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ice);
}

.page-faq .faq-feedback__list {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-feedback__list li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ice);
}

.page-faq .faq-feedback__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 7px;
  width: 11px;
  height: 11px;
  border: 1px solid var(--lime);
}

.page-faq .faq-feedback__card {
  padding: 22px 18px;
  border: 1px solid rgba(232, 255, 77, 0.36);
  background: rgba(6, 29, 22, 0.72);
  align-self: start;
}

.page-faq .faq-feedback__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-faq .faq-mail {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.4vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--lime);
  word-break: break-all;
  user-select: all;
}

.page-faq .faq-feedback__note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-links__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 16px;
  border: 1px solid var(--line);
  background: rgba(42, 59, 54, 0.4);
  color: var(--ice);
  font-size: 14.5px;
  text-decoration: none;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-links__item:hover,
.page-faq .faq-links__item:focus-visible {
  background: var(--lime-soft);
  border-color: rgba(232, 255, 77, 0.42);
  color: var(--white);
}

.page-faq .faq-links__go {
  font-family: var(--font-mono);
  color: var(--lime);
}

@media (min-width: 900px) {
  .page-faq .faq-feedback {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    gap: 40px;
    padding: 40px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step__toggle::before,
  .page-faq .faq-step__toggle::after,
  .page-faq .faq-index__link,
  .page-faq .faq-matrix__cell,
  .page-faq .faq-sym__row,
  .page-faq .faq-links__item {
    transition: none;
  }
}