.page-faq {
  --faq-orange: #FF6B35;
  --faq-blue: #003366;
  --faq-green: #39FF14;
  --faq-terracotta: #C87A5A;
  --faq-bg-warm: #F5F0E8;
  --faq-text: #1A1A1A;
  --faq-white: #FFFFFF;
  --faq-stone: #8A8A7A;
  --faq-radius: 12px;
  --faq-cut: 8px;
  --faq-shadow: 0 8px 32px rgba(0,51,102,0.08);
  --faq-shadow-hover: 0 16px 48px rgba(0,51,102,0.15);
  --faq-font-heading: Montserrat,Helvetica Neue,sans-serif;
  --faq-font-data: Fira Code,monospace;
  --faq-font-body: -apple-system,PingFang SC,Helvetica Neue,sans-serif;
  --faq-transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);

  max-width: var(--container-max, 1280px);
  margin: 0 auto;
  padding: 32px 24px 64px;
  font-family: var(--faq-font-body);
  color: var(--faq-text);
  background: var(--faq-white);
}

/* 面包屑 */
.faq-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-family: var(--faq-font-data);
  color: var(--faq-stone);
  margin-bottom: 16px;
}
.faq-breadcrumb-link {
  color: var(--faq-orange);
  text-decoration: none;
  transition: opacity 0.2s;
}
.faq-breadcrumb-link:hover,
.faq-breadcrumb-link:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--faq-orange);
  outline-offset: 2px;
}
.faq-breadcrumb-sep {
  color: var(--faq-stone);
  font-weight: 600;
}
.faq-breadcrumb-current {
  color: var(--faq-text);
  font-weight: 600;
}

/* Hero 区 */
.faq-hero {
  margin-bottom: 48px;
}
.faq-hero-title {
  font-family: var(--faq-font-heading);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--faq-blue);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.faq-hero-desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--faq-text);
  max-width: 640px;
  margin: 0;
}
.faq-hero-link {
  color: var(--faq-orange);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 600;
  transition: color 0.2s;
}
.faq-hero-link:hover,
.faq-hero-link:focus-visible {
  color: var(--faq-blue);
  outline: 2px solid var(--faq-orange);
  outline-offset: 2px;
}

/* 分类区域卡片 */
.faq-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.faq-category {
  background: var(--faq-white);
  border-radius: var(--faq-radius);
  box-shadow: var(--faq-shadow);
  border-left: 6px solid transparent;
  overflow: hidden;
  transition: box-shadow var(--faq-transition);
}
.faq-category:hover {
  box-shadow: var(--faq-shadow-hover);
}
.faq-category--login {
  border-left-color: var(--faq-orange);
}
.faq-category--calendar {
  border-left-color: var(--faq-blue);
}
.faq-category--data {
  border-left-color: var(--faq-green);
}
.faq-category--general {
  border-left-color: var(--faq-terracotta);
}

.faq-category-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px 0;
}
.faq-category-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--faq-stone);
  background: var(--faq-bg-warm);
  display: block;
  max-width: 100%;
  height: auto;
}
.faq-category-icon--placeholder {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--faq-bg-warm);
  border: 2px solid var(--faq-stone);
  color: var(--faq-stone);
}
.faq-category-title {
  font-family: var(--faq-font-heading);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--faq-blue);
  margin: 0;
}

/* 手风琴列表 */
.faq-list {
  padding: 16px 24px 24px;
}
.faq-item {
  border-bottom: 1px solid #eae8e0;
  transition: border-color 0.3s;
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-item[open] {
  border-bottom-color: transparent;
}
.faq-item + .faq-item {
  margin-top: 0;
}

/* 问题标题（summary） */
.faq-question {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: gap 0.3s;
}
.faq-question::-webkit-details-marker {
  display: none;
}
.faq-question::marker {
  display: none;
  content: "";
}
.faq-question:hover .faq-qtext,
.faq-question:focus-visible .faq-qtext {
  font-weight: 700;
}
.faq-question:focus-visible {
  outline: 2px solid var(--faq-orange);
  outline-offset: 4px;
  border-radius: 4px;
}

.faq-tag {
  font-family: var(--faq-font-data);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 10px;
  border-radius: 4px;
  clip-path: polygon(4px 0,100% 0,calc(100% - 4px) 100%,0 100%);
  flex-shrink: 0;
  line-height: 1.4;
  color: var(--faq-white);
  background: var(--faq-stone);
  transition: background 0.3s;
}
.faq-tag--login {
  background: var(--faq-orange);
}
.faq-tag--calendar {
  background: var(--faq-blue);
}
.faq-tag--data {
  background: var(--faq-green);
  color: var(--faq-text);
}
.faq-tag--general {
  background: var(--faq-terracotta);
}

.faq-qtext {
  flex: 1;
  font-family: var(--faq-font-heading);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--faq-text);
  transition: font-weight 0.2s;
}
.faq-item[open] .faq-qtext {
  font-weight: 700;
  color: var(--faq-blue);
}

.faq-toggle {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--faq-bg-warm);
  color: var(--faq-blue);
  font-size: 18px;
  font-weight: 700;
  transition: transform 0.4s ease, background 0.3s;
  line-height: 1;
  position: relative;
}
.faq-toggle::before {
  content: "+";
  display: block;
  transition: transform 0.4s ease;
}
.faq-item[open] .faq-toggle::before {
  transform: rotate(45deg);
}
.faq-item[open] .faq-toggle {
  background: var(--faq-orange);
  color: var(--faq-white);
}

/* 答案区域 */
.faq-answer {
  padding: 4px 0 20px;
  margin-top: -4px;
  background: var(--faq-bg-warm);
  border-radius: 0 0 8px 8px;
  padding-left: 16px;
  padding-right: 16px;
  animation: faqFadeIn 0.35s ease;
}
.faq-answer p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--faq-text);
  margin: 0;
}
.faq-answer-link {
  color: var(--faq-orange);
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 600;
  transition: color 0.2s;
}
.faq-answer-link:hover,
.faq-answer-link:focus-visible {
  color: var(--faq-blue);
  outline: 2px solid var(--faq-orange);
  outline-offset: 2px;
}

.faq-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--faq-blue);
  color: var(--faq-white);
  font-family: var(--faq-font-data);
  font-size: 13px;
  font-weight: 700;
  margin: 0 4px;
  vertical-align: middle;
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 底部CTA */
.faq-cta {
  margin-top: 48px;
  padding: 32px 24px;
  background: var(--faq-bg-warm);
  border-radius: var(--faq-radius);
  text-align: center;
  box-shadow: var(--faq-shadow);
}
.faq-cta-text {
  font-family: var(--faq-font-heading);
  font-size: 18px;
  font-weight: 600;
  color: var(--faq-blue);
  margin: 0 0 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 32px;
  border-radius: 8px;
  font-family: var(--faq-font-heading);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
  border: 2px solid transparent;
  line-height: 1.4;
}
.btn-primary {
  background: var(--faq-orange);
  color: var(--faq-white);
  border-color: var(--faq-orange);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  background: transparent;
  color: var(--faq-orange);
  outline: none;
}
.btn-primary:focus-visible {
  outline: 2px solid var(--faq-blue);
  outline-offset: 2px;
}

/* 响应式 - 桌面端 */
@media (min-width: 768px) {
  .page-faq {
    padding: 48px 40px 80px;
  }
  .faq-hero {
    margin-bottom: 56px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-end;
  }
  .faq-hero-title {
    width: 100%;
  }
  .faq-hero-desc {
    font-size: 18px;
    max-width: 70%;
    margin-top: 4px;
  }
  .faq-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .faq-category {
    break-inside: avoid;
  }
  .faq-category-header {
    padding: 24px 28px 0;
  }
  .faq-list {
    padding: 20px 28px 28px;
  }
  .faq-question {
    padding: 18px 0;
  }
  .faq-qtext {
    font-size: 17px;
  }
  .faq-answer p {
    font-size: 16px;
  }
  .faq-cta {
    margin-top: 56px;
    padding: 40px 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    text-align: left;
  }
  .faq-cta-text {
    margin: 0;
    font-size: 20px;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    padding: 56px 48px 96px;
  }
  .faq-content {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .faq-category-header {
    padding: 28px 32px 0;
  }
  .faq-list {
    padding: 24px 32px 32px;
  }
  .faq-hero-desc {
    font-size: 18px;
    max-width: 60%;
  }
}

/* 窄屏安全 */
@media (max-width: 420px) {
  .page-faq {
    padding-left: 16px;
    padding-right: 16px;
  }
  .faq-category-header {
    padding: 16px 16px 0;
    gap: 12px;
  }
  .faq-category-icon {
    width: 48px;
    height: 48px;
  }
  .faq-category-icon--placeholder {
    width: 48px;
    height: 48px;
  }
  .faq-category-title {
    font-size: 18px;
  }
  .faq-list {
    padding: 12px 16px 20px;
  }
  .faq-qtext {
    font-size: 15px;
  }
  .faq-tag {
    font-size: 10px;
    padding: 2px 8px;
  }
  .faq-answer {
    padding-left: 12px;
    padding-right: 12px;
  }
  .faq-answer p {
    font-size: 14px;
  }
  .faq-cta {
    padding: 24px 16px;
    flex-direction: column;
    gap: 12px;
  }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  .faq-answer {
    animation: none;
  }
  .faq-toggle,
  .faq-toggle::before,
  .faq-question,
  .faq-item,
  .faq-category {
    transition: none;
  }
}
<<<PAGE_END>>>

注意：我已按要求生成了主体HTML和专属CSS。页面采用手风琴式折叠面板，四个分类区域用不同颜色的切角标签区分，答案区域使用浅灰背景，步骤用等宽字体圆形标识展示。所有交互通过原生 `<details>` / `<summary>` 实现渐进增强，图片使用占位协议，站内链接指向合法路径，色彩节奏清晰，移动端优先并包含多级媒体查询。