/* ==========================================================================
   components.css — 全站共享组件（页眉 / 页脚 / 按钮 / 标签 / 卡片 / 手风琴 …）
   只包含跨页面复用的构件；页面专属样式一律放在 css/pages/*.css。
   ========================================================================== */

/* ==========================================================================
   1. 页眉
   ========================================================================== */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-header);
  height: var(--header-h);
  padding-inline: var(--header-pad);
  display: flex;
  align-items: center;
  background: var(--grad-header);
  transition:
    background var(--dur) var(--ease-out),
    backdrop-filter var(--dur) var(--ease-out);
}

.site-header.is-stuck {
  background: rgba(1, 1, 4, 0.82);
  backdrop-filter: var(--blur-float);
  -webkit-backdrop-filter: var(--blur-float);
  border-bottom: 1px solid var(--c-line-soft);
}

.site-header__inner {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  margin-left: -12px;
  border-radius: var(--r-sm);
  flex: none;
}

.brand__mark {
  width: 22px;
  height: 22px;
}

.brand__word {
  width: 75px;
  height: 20px;
}

/* 中文品牌名（真实徽标旁的活字，不再依赖英文图片字标） */
.brand__name {
  color: var(--c-ink);
  font-size: 17px;
  line-height: 20px;
  font-weight: 600;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

/* 主导航（桌面居中） */
.nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav__item {
  position: relative;
}

.nav__link,
.nav__trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 4px 0;
  font-size: var(--fs-body);
  line-height: 24px;
  letter-spacing: var(--ls-body);
  color: var(--c-ink);
  white-space: nowrap;
  transition: color var(--dur-fast) ease;
}

.nav__link:hover,
.nav__trigger:hover {
  color: var(--c-accent);
}

.nav__link[aria-current='page'],
.nav__item.is-active > .nav__trigger {
  color: var(--c-accent);
}

.nav__chevron {
  width: 10px;
  height: 6px;
  flex: none;
  transition: transform var(--dur-fast) var(--ease-out);
}

.nav__trigger[aria-expanded='true'] .nav__chevron {
  transform: rotate(180deg);
}

/* 下拉面板 */
.dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 248px; /* 容得下「< One's SkinID > ＋ 待发布」徽标同排，不折行 */
  padding: 10px;
  background: rgba(12, 12, 15, 0.94);
  backdrop-filter: var(--blur-float);
  -webkit-backdrop-filter: var(--blur-float);
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  box-shadow: var(--sh-float);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--dur) var(--ease-out),
    transform var(--dur) var(--ease-out),
    visibility var(--dur);
}

.nav__item.is-open .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown__link {
  display: block;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  font-size: var(--fs-body);
  line-height: 22px;
  color: var(--c-body);
  transition:
    background var(--dur-fast) ease,
    color var(--dur-fast) ease;
}

.dropdown__link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--c-ink);
}

.dropdown__link[aria-current='page'] {
  color: var(--c-accent);
}

/* 「待发布」徽标：未上线业务线在导航里占位但不跳转，明确告知访客状态 */
.dropdown__link[aria-disabled='true'],
.drawer__link[aria-disabled='true'] {
  cursor: default;
  color: var(--c-muted);
}

.dropdown__link[aria-disabled='true']:hover,
.drawer__link[aria-disabled='true']:hover {
  background: none;
  color: var(--c-muted);
}

.link-badge {
  display: inline-block;
  margin-left: 7px;
  padding: 1px 6px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  color: var(--c-muted);
  font-size: var(--fs-label);
  line-height: 1.7;
  letter-spacing: 0.04em;
  vertical-align: 1px;
  white-space: nowrap;
}

/* 页眉右侧 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 25px;
  flex: none;
}

/* 移动端汉堡 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-line);
}

.nav-toggle span {
  position: relative;
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--c-ink);
  border-radius: 2px;
}

.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 18px;
  height: 1.5px;
  background: var(--c-ink);
  border-radius: 2px;
  transition: transform var(--dur-fast) var(--ease-out);
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

.nav-toggle[aria-expanded='true'] span {
  background: transparent;
}

.nav-toggle[aria-expanded='true'] span::before {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded='true'] span::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* 移动抽屉 */
.drawer {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  padding: calc(var(--header-h) + 16px) var(--gutter) var(--sp-8);
  background: rgba(1, 1, 4, 0.96);
  backdrop-filter: var(--blur-float);
  -webkit-backdrop-filter: var(--blur-float);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--dur) var(--ease-out),
    visibility var(--dur);
}

.drawer.is-open {
  opacity: 1;
  visibility: visible;
}

.drawer__group + .drawer__group {
  margin-top: var(--sp-6);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--c-line-soft);
}

.drawer__label {
  margin-bottom: var(--sp-3);
  color: var(--c-muted);
  font-size: var(--fs-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
}

.drawer__link {
  display: block;
  padding: 11px 0;
  font-size: var(--fs-lead);
  color: var(--c-body);
}

.drawer__link:hover,
.drawer__link[aria-current='page'] {
  color: var(--c-accent);
}

.drawer__cta {
  margin-top: var(--sp-8);
  width: 100%;
}

/* ==========================================================================
   2. 按钮
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 57px;
  padding-inline: 32px;
  border-radius: var(--r-pill);
  font-size: var(--fs-lead);
  line-height: 25.2px;
  letter-spacing: var(--ls-lead);
  white-space: nowrap;
  color: var(--c-on-light);
  transition:
    transform var(--dur-fast) var(--ease-out),
    filter var(--dur-fast) ease,
    background-color var(--dur-fast) ease,
    color var(--dur-fast) ease;
}

.btn svg,
.btn img {
  width: 24px;
  height: 24px;
  flex: none;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn--accent {
  background: var(--c-accent);
  color: var(--c-accent-ink);
}

.btn--accent:hover {
  filter: brightness(1.06);
}

.btn--light {
  background: var(--c-ink);
  color: var(--c-on-light);
}

.btn--light:hover {
  background: #f0f0f0;
}

.btn--ghost {
  background: transparent;
  color: var(--c-ink);
  border: 1px solid var(--c-line-strong);
}

.btn--ghost:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.btn--sm {
  height: 45px;
  padding-inline: 24px;
  font-size: 16.5px;
  line-height: 25.2px;
}

.btn--block {
  width: 100%;
}

/* ==========================================================================
   3. 标签（Tag / Badge）
   ========================================================================== */
.tag {
  display: inline-flex;
  align-items: center;
  height: 29px;
  padding-inline: 15px;
  border-radius: var(--r-xs);
  background: var(--c-accent-soft);
  color: var(--c-accent-ink);
  font-size: var(--fs-label);
  line-height: 21px;
  letter-spacing: var(--ls-label);
  white-space: nowrap;
}

.tag--bright {
  background: var(--c-accent-deep);
}

.tag--light {
  background: var(--c-ink);
}

/* 胶囊提示条（Hero / CTA 顶部） */
.notice {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 44px;
  padding-inline: 20px;
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--c-line);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: var(--sh-card);
  color: var(--c-ink);
  font-size: var(--fs-body);
  line-height: 24px;
}

.notice::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-accent);
  flex: none;
}

/* ==========================================================================
   4. 区块标题
   ========================================================================== */
.section-head {
  display: flex;
  flex-direction: column;
  gap: 19px;
}

.section-head--center {
  align-items: center;
  text-align: center;
}

.section-head__sub {
  max-width: 582px;
  color: var(--c-body);
}

.section-head--center .section-head__sub {
  text-align: center;
}

/* 区块标题 + 右侧动作 */
.section-head--split {
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-8);
}

.section-head--split .section-head__text {
  display: flex;
  flex-direction: column;
  gap: 22px;
  max-width: 570px;
}

/* ==========================================================================
   5. 卡片
   ========================================================================== */
.card {
  position: relative;
  border-radius: var(--r-xl);
  background: rgba(248, 248, 248, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--sh-card);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  overflow: hidden;
}

.card--plain {
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

/* ==========================================================================
   6. 跑马灯（无缝滚动 + 两侧遮罩）
   ========================================================================== */
.marquee {
  position: relative;
  overflow: hidden;
  --marquee-duration: 40s;
  mask-image: linear-gradient(90deg, transparent 0%, #000 12%, #000 88%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 12%, #000 88%, transparent 100%);
}

.marquee__track {
  display: flex;
  width: max-content;
  align-items: center;
  animation: marquee-scroll var(--marquee-duration) linear infinite;
}

.marquee--reverse .marquee__track {
  animation-direction: reverse;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

@keyframes marquee-scroll {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-50%, 0, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .marquee__track {
    animation: none;
  }
}

/* ==========================================================================
   7. 手风琴（FAQ）—— 用 <details> 保证无 JS 可用
   ========================================================================== */
.accordion {
  width: 100%;
  max-width: 945px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.accordion__item {
  border: 1px solid var(--c-line);
  border-radius: var(--r-md);
  background: transparent;
  transition: border-color var(--dur) ease;
}

.accordion__item[open] {
  border-color: var(--c-line-strong);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  height: 108px;
  padding: 40px;
  cursor: pointer;
  list-style: none;
  color: var(--c-ink);
  font-size: var(--fs-h5);
  line-height: 30px;
  letter-spacing: var(--ls-h5);
}

.accordion__trigger::-webkit-details-marker {
  display: none;
}

.accordion__item[open] > .accordion__trigger {
  height: auto;
  padding-bottom: 0;
}

.accordion__icon {
  width: 30px;
  height: 30px;
  flex: none;
  /* 设计稿：收起时箭头向下（点击展开），展开时向上 */
  transform: rotate(180deg);
  transition: transform var(--dur) var(--ease-out);
}

.accordion__item[open] .accordion__icon {
  transform: none;
}

.accordion__panel {
  padding: 18px 40px 40px;
  color: var(--c-body);
}

.accordion__panel p {
  max-width: 739px;
  line-height: 22.7px;
}

/* ==========================================================================
   8. 头像 / 作品图
   ========================================================================== */
.avatar {
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgb(var(--c-accent-rgb) / 0.14);
  flex: none;
}

.figure {
  border-radius: var(--r-md);
  overflow: hidden;
}

.figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ==========================================================================
   9. 页脚
   ========================================================================== */
.site-footer {
  background: var(--c-bg);
  padding: 60px 0 30px;
}

.site-footer__top {
  display: grid;
  /* 列宽 / 间距全部可收缩：1100–1440px 之间不再横向溢出（原来固定 353+186+686=1225px） */
  grid-template-columns: minmax(240px, 353px) minmax(0, 1fr);
  column-gap: clamp(40px, 8vw, 186px);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.site-footer__tagline {
  color: var(--c-body);
}

.site-footer__cols {
  display: grid;
  grid-template-columns: minmax(64px, 84px) minmax(96px, 132px) minmax(170px, 230px);
  column-gap: clamp(24px, 5vw, 120px);
  justify-content: start;
}

.site-footer__col h3,
.site-footer__title {
  margin-bottom: var(--sp-4);
  color: var(--c-ink);
  font-size: var(--fs-lead);
  font-weight: 400;
  line-height: 24px;
  letter-spacing: var(--ls-body);
}

.site-footer__col ul {
  display: flex;
  flex-direction: column;
  gap: 17px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer__col li {
  line-height: 22px;
}

.site-footer__col a {
  color: var(--c-body);
  transition: color var(--dur-fast) ease;
}

.site-footer__col a:hover {
  color: var(--c-accent);
}

.site-footer__contact {
  display: flex;
  flex-direction: column;
  gap: 50px;
}

.site-footer__contact p {
  color: var(--c-body);
  max-width: 222px;
}

.site-footer__bottom {
  margin-top: 81px;
  padding-top: 30px;
  border-top: 1px solid var(--c-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  color: var(--c-body);
  font-size: var(--fs-body);
}

.site-footer__legal {
  display: flex;
  gap: 32px;
}

.site-footer__legal a:hover {
  color: var(--c-accent);
}

.site-footer__icp {
  color: var(--c-muted);
}

.site-footer__police {
  color: var(--c-muted);
}

/* ==========================================================================
   10. 响应式
   ========================================================================== */
/* ≥1440px 恢复设计稿的原始列宽与间距（该宽度下空间充足） */
@media (min-width: 1440px) {
  .site-footer__top {
    grid-template-columns: 353px minmax(0, 1fr);
    column-gap: 186px;
  }

  .site-footer__cols {
    grid-template-columns: 84px 132px 230px;
    column-gap: 120px;
  }
}

@media (max-width: 1100px) {
  .nav,
  .header-actions .nav__item,
  .header-actions .btn {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: var(--sp-8);
  }

  .site-footer__cols {
    grid-template-columns: repeat(3, 1fr);
    justify-content: start;
    gap: var(--sp-6);
  }
}

@media (max-width: 720px) {
  :root {
    --header-h: 68px;
  }

  .site-footer__cols {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8) var(--sp-6);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-4);
  }

  .btn {
    height: 52px;
    padding-inline: 24px;
  }
}

/* ==========================================================================
   11. 内页页头（Hero）—— 所有内页共用
   设计稿：内容从 y=250 起，居中；徽标 → 标题 → 段落，间距 20
   ========================================================================== */
.page-hero {
  position: relative;
  contain: paint;
  padding-top: 250px;
  padding-bottom: 120px;
  overflow: hidden;
  isolation: isolate;
  background: var(--c-bg);
}

.page-hero__bg {
  position: absolute;
  top: var(--hero-bg-offset);
  left: 0;
  width: 100%;
  height: calc(100% - var(--hero-bg-offset));
  object-fit: cover;
  object-position: center top;
  z-index: -2;
}

.page-hero__fade {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(1, 1, 5, 0.28) 0%, rgba(1, 1, 5, 0) 46%);
}

/* 底部渐隐（设计稿 Bottom Overlay） */
.page-hero__fade--bottom {
  background: linear-gradient(180deg, rgba(1, 1, 5, 0) 0%, var(--c-bg) 100%);
}

.page-hero__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page-hero__inner .notice {
  margin-bottom: 20px;
}

.page-hero__title {
  max-width: 720px;
  margin-bottom: 20px;
}

.page-hero__sub {
  max-width: 540px;
  margin-bottom: 0;
  color: var(--c-body);
}

.page-hero--left .page-hero__inner {
  align-items: flex-start;
  text-align: left;
}

.page-hero--left .page-hero__sub {
  max-width: 485px;
}

.page-hero--flush .page-hero__title {
  margin-bottom: 0;
}

/* 页头角落的柔光圆（设计稿 Ellipse 400×400） */
.hero-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: var(--c-ink);
  filter: blur(175px);
  opacity: 0.29;
  pointer-events: none;
  z-index: -1;
}

.hero-glow--tl {
  left: -60px;
  top: -60px;
}

.hero-glow--br {
  right: -40px;
  bottom: -160px;
  opacity: 0.18;
}

/* 虚线大圆（career 页） */
.hero-dashed {
  position: absolute;
  left: 50%;
  top: -378px;
  width: 1520px;
  height: 1520px;
  margin-left: -760px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background-image: radial-gradient(rgba(255, 255, 255, 0.16) 1px, transparent 1.2px);
  background-size: 14px 14px;
  opacity: 0.5;
  pointer-events: none;
  z-index: -1;
  mask-image: radial-gradient(closest-side, #000 62%, transparent 100%);
  -webkit-mask-image: radial-gradient(closest-side, #000 62%, transparent 100%);
}

/* ==========================================================================
   12. 合作企业条（内页复用）
   ========================================================================== */
.logo-strip {
  padding-block: 60px;
}

.logo-strip--tight {
  padding-block: 40px 80px;
}

.logo-strip__title {
  text-align: center;
  color: var(--c-ink);
  font-size: 14.5px;
  line-height: 24px;
  letter-spacing: var(--ls-body);
}

.logo-strip__marquee {
  margin-top: 30px;
}

.logo-strip__list {
  display: flex;
  align-items: center;
}

/* 同上：间距用 margin-right，保证接缝间距 = 内部间距 */
.logo-strip__list li {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 35px;
  flex: none;
  margin-right: 80px;
}

.logo-strip__list img {
  max-height: 33px;
  width: auto;
  opacity: 0.8;
}

/* ==========================================================================
   13. 收束 CTA 带（内页复用）
   ========================================================================== */
.cta-band {
  position: relative;
  overflow: hidden;
  /* 绝对定位的倾斜截图在软件合成下可能逃逸到页顶，paint containment 强制裁剪 */
  contain: paint;
  padding-block: 100px;
  background: linear-gradient(
    180deg,
    rgb(var(--c-accent-rgb) / 0.2) 0%,
    rgb(var(--c-accent-rgb) / 0) 34%
  );
  border-block: 1px solid var(--c-line);
  isolation: isolate;
}

.cta-band__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.cta-band__apps {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.cta-band__app {
  position: absolute;
  width: 939px;
  height: 740px;
  object-fit: contain;
}

.cta-band__app--back {
  left: -180px;
  top: 56px;
}

.cta-band__app--front {
  left: -200px;
  top: 61px;
}

.cta-band__inner {
  display: flex;
  justify-content: flex-end;
}

.cta-band__content {
  width: 593px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.cta-band__title {
  margin-top: 16px;
  max-width: 577px;
  font-size: var(--fs-display);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  font-weight: 600;
}

.cta-band__sub {
  margin-top: 19px;
  max-width: 528px;
  color: var(--c-body);
}

.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 42px;
}

/* ==========================================================================
   14. 常见问题块（内页复用）
   ========================================================================== */
.faq-block {
  padding-block: 120px;
  background: var(--c-panel);
}

.faq-block--plain {
  background: transparent;
}

.faq-block__title {
  text-align: center;
  margin-bottom: 74px;
}

/* ==========================================================================
   15. 动态卡片网格（首页 / 动态列表 / 相关阅读共用）
   ========================================================================== */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.post-card a {
  display: flex;
  flex-direction: column;
}

.post-card__image {
  width: 100%;
  aspect-ratio: 407 / 347;
  object-fit: cover;
  border-radius: var(--r-md);
  margin-bottom: 20px;
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 30px;
}

.post-card__date {
  display: inline-grid;
  place-items: center;
  width: 57px;
  height: 23px;
  border-radius: var(--r-pill);
  background: var(--c-panel);
  color: var(--c-ink);
}

.post-card__date svg {
  width: 15px;
  height: 15px;
}

.post-card__author {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 30px;
  padding: 4px 8px 4px 4px;
  border-radius: var(--r-pill);
  background: var(--c-panel);
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--fs-label);
  line-height: 21px;
}

.post-card__author img {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
}

.post-card__title {
  margin-top: 19px;
  display: block;
  color: var(--c-ink);
  font-size: 18.6px;
  line-height: 30px;
  letter-spacing: -0.4px;
  transition: color var(--dur-fast) ease;
}

.post-card a:hover .post-card__title {
  color: var(--c-accent);
}

/* ==========================================================================
   16. 长文（隐私 / 条款 / 单篇文章）
   ========================================================================== */
.longform {
  padding-block: 120px;
}

.longform__inner {
  max-width: 823px;
  margin-inline: auto;
}

.longform h2 {
  margin-bottom: 24px;
  font-size: var(--fs-h4);
  line-height: var(--lh-h4);
  letter-spacing: var(--ls-h4);
}

.longform h2:not(:first-child) {
  margin-top: 56px;
}

.longform p,
.longform li {
  color: var(--c-body);
  font-size: var(--fs-lead);
  line-height: 27px;
}

.longform p + p {
  margin-top: 20px;
}

.longform ul {
  margin-top: 16px;
  padding-left: 22px;
  list-style: disc;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.longform figure {
  margin: 40px 0;
  border-radius: var(--r-md);
  overflow: hidden;
}

/* ==========================================================================
   17. 表单（联系页）
   ========================================================================== */
.field {
  display: flex;
  flex-direction: column;
}

.field__label {
  margin-bottom: 16px;
  color: var(--c-ink);
  font-size: 17px;
  line-height: 25px;
}

.field__control {
  height: 58px;
  padding-inline: 20px;
  border-radius: var(--r-md);
  border: 1px solid var(--c-line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--c-ink);
  transition:
    border-color var(--dur-fast) ease,
    background-color var(--dur-fast) ease;
}

.field__control::placeholder {
  color: var(--c-muted);
}

.field__control:focus {
  outline: none;
  border-color: var(--c-accent);
  background: rgba(255, 255, 255, 0.04);
}

textarea.field__control {
  height: 148px;
  padding-block: 16px;
  resize: vertical;
}

.field--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ==========================================================================
   18. 通用响应式
   ========================================================================== */
@media (max-width: 1180px) {
  .cta-band__inner {
    justify-content: flex-start;
  }

  .cta-band__content {
    width: min(100%, 593px);
  }

  .cta-band__app {
    width: 640px;
    height: auto;
    opacity: 0.5;
  }

  .post-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .page-hero {
    padding-top: 170px;
    padding-bottom: 72px;
  }

  .faq-block,
  .longform {
    padding-block: 72px;
  }

  .faq-block__title {
    margin-bottom: 40px;
  }

  .post-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .cta-band__app {
    display: none;
  }

  .field--split {
    grid-template-columns: 1fr;
  }
}