.page-faq {
  padding: 1.75rem 0 5rem;
  color: var(--ice);
  font-family: var(--font-body);
}

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

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.6rem;
  margin-bottom: 2rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-faq .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero h1 {
  margin: 0.6rem 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 6.6vw, 3.05rem);
  letter-spacing: 0.05em;
  line-height: 1.22;
  color: var(--ice);
}

.page-faq .faq-lede {
  max-width: 60ch;
  margin: 0 0 1.5rem;
  font-family: var(--font-serif);
  font-size: 1.02rem;
  line-height: 1.95;
  color: var(--ice-dim);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .faq-jump .tag,
.page-faq .faq-tagbar .tag {
  text-decoration: none;
}

/* ---------- 主网格 ---------- */

.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.75rem;
}

.page-faq .faq-main {
  display: grid;
  gap: 3.25rem;
  min-width: 0;
}

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

.page-faq .section-head {
  margin-bottom: 1.5rem;
}

.page-faq .section-head h2 {
  margin: 0.5rem 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.32rem, 4.6vw, 1.82rem);
  letter-spacing: 0.045em;
  line-height: 1.32;
  color: var(--ice);
}

.page-faq .faq-note {
  max-width: 64ch;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 三步自检 ---------- */

.page-faq .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}

.page-faq .check-list > li {
  position: relative;
  min-width: 0;
}

.page-faq .check-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-faq .check-label {
  display: flex;
  gap: 0.85rem;
  height: 100%;
  padding: 1.1rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.page-faq .check-label:hover {
  border-color: rgba(56, 242, 224, 0.45);
}

.page-faq .check-input:focus-visible + .check-label {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .check-input:checked + .check-label {
  border-color: var(--cyan);
  background: var(--glass);
}

.page-faq .check-box {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--line-soft);
  border-radius: 6px;
  background: var(--panel-soft);
}

.page-faq .check-box::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 3px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg) scale(0);
  transition: transform 0.18s ease;
}

.page-faq .check-input:checked + .check-label .check-box::after {
  transform: rotate(45deg) scale(1);
}

.page-faq .check-body {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
}

.page-faq .check-num {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .check-title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ice);
}

.page-faq .check-desc {
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 图像 ---------- */

.page-faq .faq-figure,
.page-faq .faq-wave {
  overflow: hidden;
  margin: 1.9rem 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel-soft);
}

.page-faq .faq-figure img,
.page-faq .faq-wave img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure .media-cap,
.page-faq .faq-wave .media-cap {
  display: block;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-wave {
  max-width: 34rem;
  margin: 1.7rem 0 2.2rem;
  background: linear-gradient(145deg, var(--panel-soft) 0%, var(--bg-deep) 100%);
}

/* ---------- 现象标签 ---------- */

.page-faq .faq-tagbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- 记录时间线 ---------- */

.page-faq .faq-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.5rem;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 1.9rem;
}

.page-faq .faq-timeline > li {
  position: relative;
  min-width: 0;
}

.page-faq .faq-timeline > li::before {
  content: "";
  position: absolute;
  top: 0.42rem;
  left: -1.5rem;
  transform: translateX(-50%);
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(56, 242, 224, 0.1);
}

.page-faq .faq-stamp {
  margin: 0 0 0.4rem;
  font-size: 0.7rem;
  letter-spacing: 0.07em;
  color: var(--amber);
}

.page-faq .faq-timeline h3 {
  margin: 0 0 0.45rem;
  font-size: 1.03rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ice);
}

.page-faq .faq-timeline p {
  max-width: 68ch;
  margin: 0 0 0.45rem;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-timeline .faq-action {
  padding-left: 0.8rem;
  border-left: 2px solid var(--line);
  color: var(--ice-dim);
}

/* ---------- 手风琴 ---------- */

.page-faq .faq-acc-group {
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-acc {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-acc[open] {
  border-color: rgba(56, 242, 224, 0.45);
  background: var(--panel-soft);
}

.page-faq .faq-acc summary {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  font-size: 0.97rem;
  line-height: 1.6;
  color: var(--ice);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-acc summary::before {
  content: "+";
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 1.4rem;
  height: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-acc[open] summary::before {
  content: "−";
}

.page-faq .faq-acc summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-acc-body {
  padding: 0 1.1rem 1.2rem;
  font-size: 0.89rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-acc-body p {
  max-width: 66ch;
  margin: 0 0 0.6rem;
}

.page-faq .faq-acc-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 提交支持 ---------- */

.page-faq .faq-prepare {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.7rem;
}

.page-faq .faq-prepare li {
  display: flex;
  gap: 0.7rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--panel-soft);
  font-size: 0.89rem;
  line-height: 1.7;
  color: var(--ice-dim);
}

.page-faq .faq-prepare li::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 0.55rem;
  border-radius: 50%;
  background: var(--amber);
}

.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-faq .faq-actions a {
  text-decoration: none;
}

.page-faq .faq-tail {
  max-width: 68ch;
  margin: 1.5rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 侧边联系卡 ---------- */

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

.page-faq .faq-contact {
  padding: 1.35rem 1.25rem 1.5rem;
  border: 1px solid rgba(56, 242, 224, 0.3);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, #0F3B3A 0%, #0A2233 100%);
  box-shadow: 0 18px 40px rgba(7, 11, 28, 0.55);
}

.page-faq .faq-contact-title {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-size: 1.14rem;
  letter-spacing: 0.045em;
  line-height: 1.42;
  color: var(--ice);
}

.page-faq .faq-contact .contact-list {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-faq .faq-contact .contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}

.page-faq .faq-contact .contact-label {
  flex: 0 0 100%;
  font-size: 0.66rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(234, 246, 255, 0.62);
}

.page-faq .faq-contact .contact-value {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--ice);
  word-break: break-all;
}

.page-faq .faq-contact .copy-btn {
  flex: 0 0 auto;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--cyan);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-contact .copy-btn:hover {
  background: rgba(56, 242, 224, 0.1);
}

.page-faq .faq-contact .copy-btn[data-copied] {
  color: var(--ok);
  border-color: rgba(74, 222, 128, 0.55);
}

.page-faq .faq-contact .contact-note {
  margin: 1.1rem 0 1.25rem;
  font-size: 0.79rem;
  line-height: 1.85;
  color: rgba(234, 246, 255, 0.72);
}

.page-faq .faq-contact .cta-btn {
  display: block;
  text-align: center;
  text-decoration: none;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-prepare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .check-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-wave {
    margin-left: auto;
  }
}

@media (min-width: 1000px) {
  .page-faq {
    padding: 2.25rem 0 6rem;
  }

  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1fr) 20rem;
    gap: 3.5rem;
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 5.5rem;
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .check-label,
  .page-faq .check-box::after,
  .page-faq .faq-acc,
  .page-faq .faq-contact .copy-btn {
    transition: none;
  }
}