.page-faq {
  --faq-side-w: 308px;
  --faq-gap: clamp(24px, 3vw, 48px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(24px, 4vw, 44px) clamp(40px, 6vw, 76px);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(22px, 3.6vw, 44px);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-size: clamp(32px, 5.2vw, 70px);
  line-height: 1.08;
  max-width: 20ch;
  overflow-wrap: anywhere;
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 58ch;
  color: var(--mute);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 3.4vw, 52px);
  margin-top: clamp(28px, 4vw, 46px);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 7px;
  min-width: 0;
}

.page-faq .faq-stat__num {
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 700;
  color: var(--green);
  line-height: 1;
}

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

.page-faq .faq-hero__side {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .faq-hero__figure {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 420px;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
  background:
    radial-gradient(120% 90% at 18% 8%, rgba(53, 242, 160, .22), transparent 62%),
    linear-gradient(150deg, rgba(30, 58, 110, .8), rgba(5, 11, 26, .96));
}

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

.page-faq .faq-hero__side-note {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--mute);
  max-width: 420px;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "side"
    "main";
  gap: var(--faq-gap);
}

.page-faq .faq-side {
  grid-area: side;
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-side__block {
  padding: clamp(18px, 2.4vw, 26px);
  background: linear-gradient(158deg, rgba(30, 58, 110, .62), rgba(15, 34, 73, .94));
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-faq .faq-side__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mute);
}

.page-faq .faq-side__btn {
  margin-top: 16px;
}

.page-faq .faq-chips {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.page-faq .faq-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 10px 15px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--mute);
  font: inherit;
  font-size: 13.5px;
  letter-spacing: .02em;
  text-align: left;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-chip:hover {
  color: var(--ink);
  border-color: var(--green-deep);
}

.page-faq .faq-chip:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.page-faq .faq-chip[aria-pressed="true"] {
  color: var(--bg-night);
  background: var(--green);
  border-color: var(--green);
  font-weight: 700;
}

.page-faq .faq-chip__n {
  font-size: 11.5px;
  opacity: .8;
}

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

.page-faq .faq-main__title {
  margin: 0;
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 900;
  letter-spacing: -.01em;
  line-height: 1.15;
  color: var(--ink);
}

.page-faq .faq-main__sub {
  margin: 12px 0 0;
  font-size: 14.5px;
  color: var(--mute);
}

.page-faq .faq-list {
  margin-top: clamp(20px, 3vw, 32px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  border-left: 2px solid transparent;
  transition: border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--green);
  background: linear-gradient(90deg, rgba(53, 242, 160, .08), rgba(53, 242, 160, 0) 68%);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: clamp(12px, 2vw, 22px);
  padding: clamp(17px, 2.2vw, 24px) clamp(4px, 1vw, 14px);
  list-style: none;
  cursor: pointer;
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  transition: color .22s var(--ease);
}

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

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

.page-faq .faq-item__q:hover {
  color: var(--green);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: -2px;
}

.page-faq .faq-item__marker {
  flex: 0 0 3.4ch;
  font-size: 13px;
  font-weight: 500;
  color: var(--mute);
  letter-spacing: .06em;
}

.page-faq .faq-item[open] .faq-item__marker {
  color: var(--green);
}

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-size: 22px;
  font-weight: 400;
  line-height: 1;
  color: var(--gold);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
}

.page-faq .faq-item__a {
  padding: 0 clamp(4px, 1vw, 14px) clamp(20px, 2.6vw, 28px);
  padding-left: calc(3.4ch + clamp(16px, 2vw, 22px));
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mute);
}

/* ---------- 自助排查 ---------- */
.page-faq .faq-trouble {
  position: relative;
  padding-block: clamp(60px, 8vw, 108px);
  background: var(--bg-night);
  clip-path: polygon(0 30px, 100% 0, 100% calc(100% - 30px), 0 100%);
}

.page-faq .faq-trouble::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(58% 76% at 10% 0%, rgba(53, 242, 160, .12), transparent 70%),
    radial-gradient(46% 62% at 92% 100%, rgba(255, 198, 99, .1), transparent 72%);
}

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

.page-faq .faq-trouble__title {
  margin: 16px 0 0;
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.015em;
  color: var(--ink);
  max-width: 22ch;
}

.page-faq .faq-trouble__lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mute);
}

.page-faq .faq-steps {
  position: relative;
  list-style: none;
  margin: clamp(30px, 4.4vw, 52px) 0 0;
  padding: 0;
  counter-reset: none;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  top: 30px;
  bottom: 30px;
  left: calc(clamp(56px, 7vw, 78px) / 2);
  width: 1px;
  background: linear-gradient(180deg, rgba(53, 242, 160, .85), rgba(53, 242, 160, .06));
  pointer-events: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: clamp(56px, 7vw, 78px) minmax(0, 1fr);
  gap: clamp(14px, 2.6vw, 30px);
  padding-block: clamp(16px, 2.4vw, 26px);
  align-items: start;
}

.page-faq .faq-step__no {
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  opacity: .9;
  padding-top: 2px;
  text-align: center;
}

.page-faq .faq-step__name {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-step__body p {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mute);
}

.page-faq .faq-trouble__figure {
  margin-top: clamp(30px, 4.6vw, 54px);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
  background: linear-gradient(150deg, rgba(30, 58, 110, .7), rgba(5, 11, 26, .9));
}

.page-faq .faq-trouble__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

/* ---------- 底部窄带 ---------- */
.page-faq .faq-band {
  padding-block: clamp(48px, 7vw, 88px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-band__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4.4vw, 60px);
}

.page-faq .faq-help__title {
  margin: 16px 0 0;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--ink);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-help__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
  padding-block: 13px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-help__k {
  flex: 0 0 5.4em;
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--mute);
}

.page-faq .faq-help__v {
  font-family: var(--font-mono);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__note {
  margin: 20px 0 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute);
}

.page-faq .faq-help .btn {
  margin-top: 24px;
}

.page-faq .faq-read__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-read__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 18px 16px 20px;
  text-decoration: none;
  background: var(--bg-panel);
  border-left: 2px solid var(--ridge);
  transition: border-color .22s var(--ease), background-color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-read__item:hover {
  border-left-color: var(--green);
  background: rgba(53, 242, 160, .08);
  transform: translateY(-3px);
}

.page-faq .faq-read__item:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.page-faq .faq-read__k {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-read__name {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-read__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mute);
}

/* ---------- 响应式 ---------- */
@media (min-width: 680px) {
  .page-faq .faq-read__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-hero__side {
    justify-items: end;
  }

  .page-faq .faq-hero__figure,
  .page-faq .faq-hero__side-note {
    max-width: 100%;
  }

  .page-faq .faq-band__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 1fr) var(--faq-side-w);
    grid-template-areas: "main side";
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }
}

@media (max-width: 899px) {
  .page-faq .faq-hero__side {
    justify-items: start;
  }

  .page-faq .faq-hero__figure {
    max-width: 340px;
  }

  .page-faq .faq-trouble {
    clip-path: none;
  }

  .page-faq .faq-trouble__title,
  .page-faq .faq-step__body p,
  .page-faq .faq-item__a p {
    max-width: none;
  }
}

@media (max-width: 480px) {
  .page-faq .faq-item__a {
    padding-left: clamp(4px, 1vw, 14px);
  }

  .page-faq .faq-step {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .page-faq .faq-steps::before {
    left: 22px;
  }
}
<<<END>>>