.page-faq {
  background: var(--ink);
  color: var(--paper);
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(26px, 6vw, 54px)) 0 clamp(32px, 6vw, 56px);
  background:
    radial-gradient(760px 380px at 88% 2%, rgba(255, 90, 31, 0.18), transparent 62%),
    radial-gradient(620px 340px at 4% 96%, rgba(45, 125, 255, 0.12), transparent 66%),
    var(--ink);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-faq .faq-hero .breadcrumb {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(244, 241, 234, 0.55);
}

.page-faq .faq-hero .breadcrumb a {
  color: rgba(244, 241, 234, 0.72);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb a:hover {
  color: var(--orange);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

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

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 8.4vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 10px 0 18px;
  max-width: 16ch;
  text-wrap: balance;
}

.page-faq .faq-hero__lede {
  margin: 0 0 26px;
  max-width: 44ch;
  font-size: clamp(15.5px, 2.3vw, 18px);
  line-height: 1.78;
  color: rgba(244, 241, 234, 0.78);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero__media {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__hint {
  margin: 0;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 241, 234, 0.82);
}

/* ---------- 三步路径 ---------- */
.page-faq .steps {
  padding: clamp(34px, 7vw, 64px) 0;
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .steps__head {
  display: grid;
  gap: 10px;
  max-width: 60ch;
  margin-bottom: clamp(20px, 4vw, 34px);
}

.page-faq .steps__head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 4.6vw, 36px);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.page-faq .steps__head p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.64);
}

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

.page-faq .step {
  position: relative;
  padding: 20px 0 24px;
  border-top: 1px solid var(--line);
}

.page-faq .step__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(32px, 6vw, 50px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--orange);
}

.page-faq .step__title {
  margin: 12px 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(17px, 2.6vw, 21px);
  line-height: 1.32;
}

.page-faq .step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 241, 234, 0.72);
}

.page-faq .kw {
  border-bottom: 2px solid var(--orange);
  padding-bottom: 1px;
  color: var(--paper);
}

/* ---------- 问答 ---------- */
.page-faq .qa {
  padding: clamp(42px, 8vw, 86px) 0;
  background: var(--paper);
  color: var(--ink);
}

.page-faq .qa__layout {
  display: grid;
  gap: clamp(22px, 5vw, 56px);
}

.page-faq .qa__index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--smoke);
}

.page-faq .qa__index ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-faq .qa__index li {
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .qa__index a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 11px 0;
  font-size: 14px;
  color: var(--ink);
  text-decoration: none;
  transition: color 0.18s var(--ease);
}

.page-faq .qa__index a span {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--smoke);
  transition: color 0.18s var(--ease);
}

.page-faq .qa__index a:hover,
.page-faq .qa__index a:focus-visible {
  color: var(--orange);
}

.page-faq .qa__index a:hover span,
.page-faq .qa__index a:focus-visible span {
  color: var(--orange);
}

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

.page-faq .qa__main h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(25px, 4.4vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-faq .qa__lede {
  margin: 0 0 clamp(16px, 3vw, 26px);
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(18, 20, 23, 0.7);
}

.page-faq .qa__item {
  border-top: 1px solid var(--line-dark);
}

.page-faq .qa__item:last-child {
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .qa__item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  gap: 13px;
  align-items: flex-start;
  padding: 19px 0;
}

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

.page-faq .qa__item summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 4px;
}

.page-faq .qa__num {
  flex: 0 0 auto;
  margin-top: 3px;
  padding: 3px 7px;
  border: 1px solid rgba(255, 90, 31, 0.45);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-faq .qa__item[open] .qa__num {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--ink);
}

.page-faq .qa__q {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: clamp(16.5px, 2.6vw, 20px);
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .qa__sign {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 4px;
  color: var(--smoke);
  transition: color 0.18s var(--ease);
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
}

.page-faq .qa__sign::before {
  width: 12px;
  height: 2px;
}

.page-faq .qa__sign::after {
  width: 2px;
  height: 12px;
}

.page-faq .qa__item[open] .qa__sign {
  color: var(--orange);
}

.page-faq .qa__item[open] .qa__sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .qa__body {
  padding: 0 0 24px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(18, 20, 23, 0.78);
}

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

.page-faq .qa__body li {
  position: relative;
  padding-left: 17px;
}

.page-faq .qa__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
}

/* ---------- 订阅 ---------- */
.page-faq .sub {
  position: relative;
  overflow: hidden;
  padding: clamp(42px, 8vw, 84px) 0;
  background:
    radial-gradient(620px 320px at 92% 12%, rgba(87, 214, 163, 0.14), transparent 66%),
    var(--deep);
}

.page-faq .sub__grid {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: center;
}

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

.page-faq .sub h2 {
  margin: 10px 0 14px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(25px, 4.6vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-faq .sub__intro p {
  margin: 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(244, 241, 234, 0.74);
}

.page-faq .sub__nums {
  list-style: none;
  margin: 22px 0;
  padding: 16px 0;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 4vw, 42px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .sub__nums li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .sub__nums .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--mint);
}

.page-faq .sub__nums li span:last-child {
  font-size: 13px;
  color: rgba(244, 241, 234, 0.66);
}

.page-faq .sub__note {
  margin: 0 0 22px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.6);
}

.page-faq .sub__panel {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-faq .sub__media {
  margin: 0;
}

.page-faq .sub__switches {
  display: grid;
  gap: 10px;
}

.page-faq .switch {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: var(--glass);
  cursor: pointer;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

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

.page-faq .switch__track {
  position: relative;
  flex: 0 0 auto;
  width: 46px;
  height: 26px;
  border-radius: 999px;
  background: rgba(244, 241, 234, 0.18);
  border: 1px solid var(--line);
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .switch__track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--paper);
  transition: transform 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .switch input:checked ~ .switch__track {
  background: var(--orange);
  border-color: var(--orange);
}

.page-faq .switch input:checked ~ .switch__track::after {
  transform: translateX(20px);
  background: var(--ink);
}

.page-faq .switch input:focus-visible ~ .switch__track {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.page-faq .switch__body {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.page-faq .switch__body strong {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .switch__body em {
  font-style: normal;
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(244, 241, 234, 0.6);
}

.page-faq .switch:has(input:checked) {
  border-color: rgba(255, 90, 31, 0.5);
  background: rgba(255, 90, 31, 0.08);
}

/* ---------- 反馈 ---------- */
.page-faq .feedback {
  padding: clamp(42px, 8vw, 84px) 0;
  background: var(--paper);
  color: var(--ink);
}

.page-faq .feedback__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .feedback h2 {
  margin: 10px 0 14px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(25px, 4.4vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-faq .feedback__intro p {
  margin: 0 0 12px;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(18, 20, 23, 0.74);
}

.page-faq .feedback__intro .btn {
  margin-top: 8px;
}

.page-faq .feedback__card {
  display: grid;
  gap: 14px;
  padding: clamp(20px, 3.6vw, 30px);
  border-radius: var(--radius-l);
  background: var(--ink);
  color: var(--paper);
  min-width: 0;
}

.page-faq .feedback__card .contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 12px;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .feedback__card .contact-key {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--smoke);
}

.page-faq .feedback__card .contact-value {
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .feedback__card .copy-btn {
  justify-self: end;
  padding: 5px 14px;
  border: 1px solid rgba(244, 241, 234, 0.28);
  border-radius: 999px;
  background: transparent;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 12px;
  cursor: pointer;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .feedback__card .copy-btn:hover,
.page-faq .feedback__card .copy-btn:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

.page-faq .feedback__card .copy-btn.is-copied {
  border-color: var(--mint);
  color: var(--mint);
}

.page-faq .feedback__card .contact-note {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.72;
  color: rgba(244, 241, 234, 0.6);
}

.page-faq .feedback__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 4px;
}

.page-faq .feedback__links .link {
  font-size: 13px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(244, 241, 234, 0.3);
  padding-bottom: 1px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .feedback__links .link:hover,
.page-faq .feedback__links .link:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 断点 ---------- */
@media (max-width: 640px) {
  .page-faq .qa__body {
    padding-bottom: 20px;
  }

  .page-faq .faq-hero__actions .btn {
    flex: 1 1 100%;
    justify-content: center;
    text-align: center;
  }

  .page-faq .feedback__card .contact-item {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 820px) {
  .page-faq .steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .step {
    padding: 22px clamp(18px, 3vw, 34px) 26px 0;
  }

  .page-faq .step + .step {
    border-left: 1px solid var(--line-soft);
    padding-left: clamp(18px, 3vw, 34px);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-faq .sub__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-faq .feedback__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  }
}

@media (min-width: 960px) {
  .page-faq .qa__layout {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }

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

  .page-faq .qa__body {
    padding-left: 47px;
  }
}