/* =========================================================
   使用教程页 —— 页面作用域 .page-faq
   ========================================================= */

.page-faq {
  --faq-gutter: clamp(16px, 4vw, 32px);
  display: block;
  padding-bottom: clamp(36px, 7vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(24px, 4vw, 46px);
  background:
    radial-gradient(96% 150% at 88% -12%, rgba(111, 242, 206, 0.10), transparent 58%),
    radial-gradient(70% 130% at 2% 112%, rgba(255, 139, 61, 0.07), transparent 62%);
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__title {
  max-width: 22ch;
  margin: 12px 0 18px;
}

.page-faq .faq-hero__lede {
  max-width: 66ch;
  margin: 0;
}

/* ---------- 两栏骨架：索引 + 内容流 ---------- */
.page-faq .faq-frame {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-top: clamp(20px, 3vw, 34px);
}

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

.page-faq .faq-index__label {
  margin: 12px 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gray-green);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--cream);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-index__list a:hover {
  border-color: var(--line-strong);
  background: var(--panel);
}

.page-faq .faq-index__no {
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

@media (min-width: 1024px) {
  .page-faq .faq-frame {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 62px;
    padding-top: clamp(28px, 4vw, 46px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 28px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-faq .faq-index__list a {
    padding: 11px 0 11px 14px;
    border: 0;
    border-left: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
  }

  .page-faq .faq-index__list a:hover {
    border-left-color: var(--cyan);
    background: transparent;
    color: var(--cyan);
  }
}

/* ---------- 内容流与区块 ---------- */
.page-faq .faq-flow {
  min-width: 0;
}

.page-faq .faq-block {
  padding-block: clamp(28px, 5vw, 56px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-block:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-block .display-2 {
  margin: 10px 0 14px;
}

.page-faq .faq-block .lede {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 3vw, 32px);
}

/* ---------- 第一节：五步路径 ---------- */
.page-faq .faq-lookup-grid {
  display: grid;
  gap: 26px;
}

@media (min-width: 900px) {
  .page-faq .faq-lookup-grid {
    grid-template-columns: minmax(0, 1fr) 296px;
    gap: 44px;
    align-items: start;
  }
}

.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-step:first-child {
  padding-top: 0;
}

.page-faq .faq-step:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-step__no {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .faq-step__no::after {
  content: "";
  width: 1px;
  flex: 1;
  min-height: 18px;
  background: linear-gradient(to bottom, var(--cyan), rgba(111, 242, 206, 0));
  opacity: 0.55;
}

.page-faq .faq-step:last-child .faq-step__no::after {
  display: none;
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--cream);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--cream);
}

@media (min-width: 768px) {
  .page-faq .faq-step {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 26px;
    padding: 26px 0;
  }

  .page-faq .faq-step__title {
    font-size: 1.18rem;
  }
}

.page-faq .faq-lookup-figure {
  margin: 0;
}

@media (min-width: 900px) {
  .page-faq .faq-lookup-figure {
    position: sticky;
    top: 32px;
  }
}

.page-faq figure {
  margin: 0;
}

.page-faq figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  object-fit: cover;
}

.page-faq figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--gray-green);
}

/* ---------- 第二节：两类标记 ---------- */
.page-faq .faq-marks {
  display: grid;
  gap: 16px;
}

@media (min-width: 768px) {
  .page-faq .faq-marks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

.page-faq .faq-mark {
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel), var(--ink));
}

.page-faq .faq-mark--match {
  border-left: 3px solid var(--cyan);
}

.page-faq .faq-mark--note {
  border-left: 3px solid var(--orange);
}

.page-faq .faq-mark__tag {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-faq .faq-mark--match .faq-mark__tag {
  color: var(--cyan);
}

.page-faq .faq-mark--note .faq-mark__tag {
  color: var(--orange);
}

.page-faq .faq-mark__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--cream);
}

.page-faq .faq-mark p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--cream);
}

.page-faq .faq-sub {
  margin: clamp(28px, 4vw, 42px) 0 6px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cream);
}

.page-faq .faq-sequence {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: seq;
}

.page-faq .faq-sequence li {
  padding: 18px 0 18px 42px;
  border-bottom: 1px solid var(--line);
  position: relative;
  counter-increment: seq;
}

.page-faq .faq-sequence li:last-child {
  border-bottom: 0;
}

.page-faq .faq-sequence li::before {
  content: counter(seq, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--orange);
  letter-spacing: 0.02em;
}

.page-faq .faq-sequence h4 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cream);
}

.page-faq .faq-sequence p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--cream);
}

/* ---------- 第三节：平板与手机 ---------- */
.page-faq .faq-devices {
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-faq .faq-devices {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 38px;
    align-items: start;
  }
}

.page-faq .faq-device h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--cream);
}

.page-faq .faq-device ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-device li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--cream);
}

.page-faq .faq-device li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 10px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .faq-device--phone {
  margin-top: 26px;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-device--phone li::before {
  background: var(--orange);
}

/* ---------- 第四节：折叠问答 ---------- */
.page-faq .faq-block--qa {
  padding: clamp(24px, 4vw, 40px) clamp(18px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel), var(--ink));
}

.page-faq .faq-qa {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  transition: color 200ms var(--ease);
}

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

.page-faq .faq-qa__q:hover .faq-qa__text {
  color: var(--cyan);
}

.page-faq .faq-qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.page-faq .faq-qa__cat {
  flex: none;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  color: var(--gray-green);
  white-space: nowrap;
}

.page-faq .faq-qa__text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--cream);
  transition: color 200ms var(--ease);
}

.page-faq .faq-qa__caret {
  flex: none;
  align-self: center;
  width: 8px;
  height: 8px;
  margin-left: auto;
  margin-right: 4px;
  border-right: 1.5px solid var(--orange);
  border-bottom: 1.5px solid var(--orange);
  transform: rotate(45deg);
  transition: transform 240ms var(--ease);
}

.page-faq .faq-qa__item[open] .faq-qa__caret {
  transform: rotate(-135deg);
}

.page-faq .faq-qa__a {
  padding: 0 4px 18px;
}

.page-faq .faq-qa__a p {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--cream);
}

@media (min-width: 768px) {
  .page-faq .faq-qa__q {
    padding: 18px 6px;
    gap: 16px;
  }

  .page-faq .faq-qa__text {
    font-size: 16px;
  }

  .page-faq .faq-qa__a {
    padding: 0 6px 22px 90px;
  }
}

/* ---------- 第五节：四步排查 ---------- */
.page-faq .faq-fix {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.page-faq .faq-fix__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-fix__item:first-child {
  padding-top: 0;
}

.page-faq .faq-fix__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-fix__no {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 14px;
  color: var(--cyan);
}

.page-faq .faq-fix__body h3 {
  margin: 4px 0 8px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--cream);
}

.page-faq .faq-fix__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--cream);
}

@media (min-width: 768px) {
  .page-faq .faq-fix__item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 22px;
    padding: 26px 0;
  }

  .page-faq .faq-fix__no {
    width: 44px;
    height: 44px;
    font-size: 16px;
  }

  .page-faq .faq-fix__body h3 {
    font-size: 1.15rem;
  }
}

/* ---------- 第六节：还没解决 ---------- */
.page-faq .faq-block--assist {
  border-top: 0;
  border: 1px solid var(--line);
  border-top: 2px solid var(--orange);
  border-radius: var(--radius);
  padding: clamp(24px, 4vw, 40px) clamp(18px, 3vw, 34px);
  background: linear-gradient(180deg, var(--ink), var(--panel));
}

.page-faq .faq-block--assist .eyebrow {
  color: var(--orange-soft);
}

.page-faq .faq-assist__list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-assist__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream);
}

.page-faq .faq-assist__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--orange);
}

.page-faq .faq-block--assist .note {
  display: block;
  margin: 0 0 24px;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray-green);
}

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

/* ---------- 通用小样式 ---------- */
.page-faq a {
  color: var(--cyan);
}

.page-faq .btn {
  text-decoration: none;
}

.page-faq .faq-step__body a,
.page-faq .faq-device a,
.page-faq .faq-qa__a a {
  text-decoration: underline;
  text-decoration-color: rgba(111, 242, 206, 0.45);
  text-underline-offset: 3px;
}

.page-faq .faq-step__body a:hover,
.page-faq .faq-device a:hover,
.page-faq .faq-qa__a a:hover {
  text-decoration-color: var(--cyan);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-qa__caret,
  .page-faq .faq-qa__q,
  .page-faq .faq-qa__text,
  .page-faq .faq-index__list a {
    transition: none;
  }
}