.page-faq {
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-sans);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--c-ink);
  background-image:
    linear-gradient(rgba(201, 203, 216, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 203, 216, 0.09) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--c-white);
  padding: 20px 0 clamp(40px, 7vw, 76px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -12%;
  bottom: -18%;
  width: 62%;
  height: 260px;
  background: var(--c-red);
  opacity: 0.16;
  transform: skewX(-6deg) rotate(-6deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.page-faq .faq-hero .breadcrumb__link {
  color: rgba(255, 255, 255, 0.68);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb__link[aria-current="page"] {
  color: var(--c-yellow);
}

.page-faq .faq-hero .breadcrumb__sep {
  color: rgba(255, 255, 255, 0.34);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: 22px;
  align-items: end;
}

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

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 7vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--c-white);
}

.page-faq .faq-hero__text {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.82);
}

.page-faq .faq-hero__text strong {
  color: var(--c-yellow);
  font-weight: 700;
}

.page-faq .faq-hero__status {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 20px 0 0;
  padding: 8px 12px;
  border-left: 3px solid var(--c-green);
  background: rgba(43, 45, 66, 0.72);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.8);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid rgba(201, 203, 216, 0.24);
  background: var(--c-deep);
}

.page-faq .faq-hero__pic {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-hero__cap {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.56);
  border-top: 1px solid rgba(201, 203, 216, 0.18);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.page-faq .faq-rail {
  padding: 26px 0 8px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-rail__sticky {
  position: static;
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--c-graphite);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 14px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--c-ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 8px;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-left-color: var(--c-red);
  color: var(--c-red);
}

.page-faq .faq-rail__idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-red);
  flex: none;
}

.page-faq .faq-rail__tree {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 12px;
}

.page-faq .faq-rail__tree a {
  display: flex;
  gap: 7px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-graphite);
  text-decoration: none;
}

.page-faq .faq-rail__tree a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-blue);
  flex: none;
}

.page-faq .faq-rail__tree a:hover,
.page-faq .faq-rail__tree a:focus-visible {
  color: var(--c-red);
}

.page-faq .faq-rail__note {
  margin: 0;
  padding: 10px 12px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-yellow);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--c-graphite);
}

/* ---------- 通用分区 ---------- */
.page-faq .faq-sec {
  padding: clamp(36px, 6vw, 66px) 0;
  border-bottom: 1px solid var(--c-line);
  scroll-margin-top: calc(var(--hdr-h) + 16px);
}

.page-faq .faq-sec--last {
  border-bottom: 0;
  padding-bottom: clamp(48px, 7vw, 88px);
}

.page-faq .faq-sec__head {
  max-width: 62ch;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-sec__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--c-red);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.28;
  color: var(--c-ink);
}

.page-faq .faq-sec__lede {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-graphite);
}

/* ---------- 分类卡 ---------- */
.page-faq .faq-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-cat {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-red);
  padding: 16px 16px 14px;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-cat:hover {
  border-color: var(--c-blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(11, 12, 22, 0.07);
}

.page-faq .faq-cat__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-red);
}

.page-faq .faq-cat__name {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.3;
  color: var(--c-ink);
}

.page-faq .faq-cat__count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--c-ink);
  background: var(--c-yellow);
  padding: 1px 6px;
  white-space: nowrap;
}

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

.page-faq .faq-cat__qs li {
  position: relative;
  padding-left: 14px;
}

.page-faq .faq-cat__qs li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  background: var(--c-blue);
  transform: skewX(-6deg);
}

.page-faq .faq-cat__qs a {
  font-size: 14px;
  line-height: 1.55;
  color: var(--c-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-cat__qs a:hover,
.page-faq .faq-cat__qs a:focus-visible {
  color: var(--c-red);
  border-bottom-color: var(--c-red);
}

/* ---------- 指南章节 ---------- */
.page-faq .faq-guide__flag {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  margin-bottom: 16px;
  background: var(--c-ink);
  border-left: 4px solid var(--c-yellow);
}

.page-faq .faq-guide__flag p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.85);
}

.page-faq .faq-guide__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-guide__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--c-line);
  scroll-margin-top: calc(var(--hdr-h) + 20px);
}

.page-faq .faq-guide__num {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--c-red);
  padding-top: 3px;
}

.page-faq .faq-guide__title {
  margin: 0 0 4px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.35;
  color: var(--c-ink);
}

.page-faq .faq-guide__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--c-graphite);
}

.page-faq .faq-guide__item .tag {
  display: inline-block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 2px 7px;
}

/* ---------- 深色编号区 ---------- */
.page-faq .faq-sec--dark {
  background: var(--c-ink);
  color: var(--c-white);
  border-bottom: 0;
  padding: clamp(28px, 5vw, 44px) clamp(16px, 3vw, 32px);
  margin: clamp(28px, 5vw, 44px) 0;
}

.page-faq .faq-sec--dark .faq-sec__num {
  color: var(--c-yellow);
}

.page-faq .faq-sec--dark .faq-sec__title {
  color: var(--c-white);
}

.page-faq .faq-sec--dark .faq-sec__lede {
  color: rgba(255, 255, 255, 0.74);
}

.page-faq .faq-check__figure {
  margin: 0 0 20px;
  border: 1px solid rgba(201, 203, 216, 0.2);
  background: var(--c-deep);
}

.page-faq .faq-check__pic {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-check__cap {
  padding: 7px 12px;
  border-top: 1px solid rgba(201, 203, 216, 0.16);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.52);
}

.page-faq .faq-check__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: 20px 34px minmax(0, 1fr);
  align-items: start;
  gap: 8px;
  padding: 9px 10px;
  background: rgba(43, 45, 66, 0.62);
  border: 1px solid rgba(201, 203, 216, 0.2);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-check__item:hover {
  border-color: var(--c-blue);
}

.page-faq .faq-check__box {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  border: 1.5px solid var(--c-line);
  background: transparent;
  cursor: pointer;
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .faq-check__box:checked {
  background: var(--c-yellow);
  border-color: var(--c-yellow);
}

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

.page-faq .faq-check__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-blue);
  padding-top: 3px;
}

.page-faq .faq-check__text {
  font-size: 14px;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.88);
}

.page-faq .faq-check__box:checked ~ .faq-check__text {
  color: rgba(255, 255, 255, 0.48);
  text-decoration: line-through;
}

.page-faq .faq-check__box:checked ~ .faq-check__num {
  color: var(--c-yellow);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--c-blue);
  box-shadow: 0 8px 22px rgba(11, 12, 22, 0.07);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-ink);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--c-blue);
}

.page-faq .qa[open] .qa__q::after {
  content: "−";
  color: var(--c-red);
}

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

.page-faq .qa__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-red);
  padding-top: 3px;
}

.page-faq .qa__body {
  padding: 14px 16px 16px;
  border-top: 1px solid var(--c-line);
}

.page-faq .qa__answer {
  margin: 0 0 12px;
  padding: 10px 12px;
  background: rgba(76, 201, 240, 0.1);
  border-left: 3px solid var(--c-blue);
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--c-ink);
}

.page-faq .qa__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: qa;
  display: grid;
  gap: 7px;
}

.page-faq .qa__steps li {
  counter-increment: qa;
  position: relative;
  padding-left: 30px;
  font-size: 14.5px;
  line-height: 1.62;
  color: var(--c-graphite);
}

.page-faq .qa__steps li::before {
  content: counter(qa, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--c-red);
  border: 1px solid rgba(230, 57, 70, 0.42);
  padding: 0 3px;
}

/* ---------- 工单与联系 ---------- */
.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-support__box {
  background: var(--c-white);
  border: 1px solid var(--c-line);
  border-top: 3px solid var(--c-ink);
  padding: 18px 16px;
}

.page-faq .faq-support__box--contact {
  border-top-color: var(--c-red);
  background: var(--c-white);
}

.page-faq .faq-support__title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  color: var(--c-ink);
}

.page-faq .faq-support__prep {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 9px;
  counter-reset: prep;
}

.page-faq .faq-support__prep li {
  counter-increment: prep;
  position: relative;
  padding-left: 26px;
  font-size: 14.5px;
  line-height: 1.62;
  color: var(--c-graphite);
}

.page-faq .faq-support__prep li::before {
  content: counter(prep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-blue);
}

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

.page-faq .faq-support__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-graphite);
  margin-bottom: 2px;
}

.page-faq .faq-support__v {
  display: block;
  margin-bottom: 14px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-ink);
  word-break: break-word;
}

.page-faq .faq-support__tip {
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-graphite);
  padding-top: 10px;
  border-top: 1px dashed var(--c-line);
}

.page-faq .faq-support__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 18px 0 0;
}

.page-faq .faq-support__links a {
  font-size: 14px;
  color: var(--c-red);
  text-decoration: none;
  border-bottom: 1px solid rgba(230, 57, 70, 0.4);
  padding-bottom: 1px;
}

.page-faq .faq-support__links a:hover,
.page-faq .faq-support__links a:focus-visible {
  color: var(--c-ink);
  border-bottom-color: var(--c-ink);
}

/* ---------- 收藏 ---------- */
.page-faq .faq-keep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-keep__item {
  position: relative;
  padding: 14px 16px 14px 46px;
  background: var(--c-white);
  border: 1px solid var(--c-line);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-keep__item:hover {
  border-color: var(--c-blue);
  transform: translateY(-2px);
}

.page-faq .faq-keep__num {
  position: absolute;
  left: 14px;
  top: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-yellow);
  background: var(--c-ink);
  padding: 2px 5px;
}

.page-faq .faq-keep__link {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  color: var(--c-ink);
  text-decoration: none;
  border-bottom: 2px solid var(--c-red);
}

.page-faq .faq-keep__link:hover,
.page-faq .faq-keep__link:focus-visible {
  color: var(--c-red);
}

.page-faq .faq-keep__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.66;
  color: var(--c-graphite);
}

.page-faq .faq-keep__note {
  margin: 18px 0 0;
  padding: 12px 14px;
  background: rgba(249, 199, 79, 0.16);
  border-left: 3px solid var(--c-yellow);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-ink);
}

/* ---------- 焦点可见性 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--c-yellow);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-check__list {
    grid-template-columns: 1fr 1fr;
    gap: 8px 18px;
  }

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

  .page-faq .faq-keep__item {
    padding: 16px 14px 14px;
  }

  .page-faq .faq-keep__num {
    position: static;
    display: inline-block;
    margin-bottom: 8px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-support__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.2fr 0.9fr;
    gap: clamp(28px, 4vw, 52px);
  }

  .page-faq .faq-hero {
    padding-top: 26px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 246px minmax(0, 1fr);
    gap: clamp(26px, 4vw, 54px);
    padding-top: 12px;
  }

  .page-faq .faq-rail {
    padding: 32px 0 0;
    border-bottom: 0;
  }

  .page-faq .faq-rail__sticky {
    position: sticky;
    top: calc(var(--hdr-h-compact) + 20px);
    max-height: calc(100vh - var(--hdr-h-compact) - 44px);
    overflow-y: auto;
    padding-right: 6px;
  }

  .page-faq .faq-rail__list {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-rail__tree {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-body {
    border-left: 1px solid var(--c-line);
    padding-left: clamp(20px, 3vw, 40px);
  }

  .page-faq .faq-sec--dark {
    margin-left: calc(clamp(16px, 3vw, 32px) * -1);
    margin-right: calc(clamp(16px, 3vw, 32px) * -1);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-keep__item,
  .page-faq .faq-check__item,
  .page-faq .qa {
    transition: none;
  }

  .page-faq .faq-cat:hover,
  .page-faq .faq-keep__item:hover {
    transform: none;
  }
}
<<<END>>>