/* 本文件与 index_article.htm 同目录，用于本地保存离线展示 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

.za20dfbody {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, "Noto Sans SC",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #0f172a;
  background: radial-gradient(1200px 600px at 20% -10%, rgba(59, 130, 246, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(16, 185, 129, 0.14), transparent 60%),
    #f7fafc;
}

.za20dfpage {
  min-height: 100vh;
  overflow-x: clip;
}

.za20dfcontainer {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 18px;
  min-width: 0;
}

/* 避免锚点跳转时被 sticky header 遮挡 */
.za20dfmain section[id] {
  scroll-margin-top: 88px;
}

.za20dfheader {
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
  position: sticky;
  top: 0;
  z-index: 20;
}

.za20dfheaderInner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
}

.za20dfbrand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 240px;
}

.za20dfbrandMark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.95), rgba(16, 185, 129, 0.95));
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.za20dfbrandName {
  font-weight: 800;
  line-height: 1.15;
}

.za20dfbrandSub {
  margin-top: 2px;
  font-size: 12px;
  color: rgba(15, 23, 42, 0.7);
}

.za20dfnavToggle {
  display: none;
}

.za20dfnavToggleBtn {
  display: none;
}

.za20dfnavList {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.za20dfnavLink {
  text-decoration: none;
  color: rgba(15, 23, 42, 0.8);
  font-weight: 650;
  font-size: 14px;
  padding: 8px 10px;
  border-radius: 10px;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
  display: inline-block;
}

.za20dfnavLink:hover {
  background: rgba(37, 99, 235, 0.10);
  color: rgba(37, 99, 235, 0.95);
  transform: translateY(-1px);
}

.za20dfmain {
  padding-bottom: 32px;
}

.za20dfhero {
  padding: 34px 0 10px;
}

.za20dfheroGrid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 22px;
  align-items: start;
}

.za20dfheroLeft,
.za20dfheroRight,
.za20dfcard,
.za20dftimeItem,
.za20dffeature,
.za20dfprivacyCard,
.za20dfkeywordCol,
.za20dffaqItem {
  min-width: 0;
}

.za20dfheroRight {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
}

.za20dfheroImageWrap {
  width: 100%;
  max-width: 440px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 22px;
  padding: 10px;
  box-shadow: 0 22px 46px rgba(15, 23, 42, 0.06);
}

.za20dfheroImage {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 16px;
  object-fit: cover;
}

.za20dfh1 {
  margin: 0;
  font-size: clamp(28px, 4.2vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.2px;
}

.za20dflead {
  margin: 14px 0 18px;
  font-size: clamp(14px, 2.2vw, 16px);
  line-height: 1.8;
  color: rgba(15, 23, 42, 0.78);
}

.za20dfctaRow {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.za20dfbtn {
  text-decoration: none;
  border-radius: 12px;
  padding: 10px 14px;
  font-weight: 800;
  font-size: 14px;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}

.za20dfbtn_full {
  width: 100%;
}

.za20dfbtn_primary {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.95), rgba(16, 185, 129, 0.95));
  color: #fff;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.18);
}

.za20dfbtn_primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.24);
}

.za20dfbtn_ghost {
  background: rgba(255, 255, 255, 0.8);
  color: rgba(15, 23, 42, 0.86);
  border-color: rgba(15, 23, 42, 0.12);
}

.za20dfbtn_ghost:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 1);
  border-color: rgba(37, 99, 235, 0.25);
}

.za20dfquickFacts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.za20dffact {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  padding: 12px;
}

.za20dffactTop {
  font-weight: 900;
  color: rgba(37, 99, 235, 0.95);
}

.za20dffactTitle {
  margin-top: 6px;
  font-weight: 900;
}

.za20dffactText {
  margin-top: 6px;
  font-size: 13px;
  color: rgba(15, 23, 42, 0.75);
  line-height: 1.55;
}

.za20dfpanel {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.06);
}

.za20dfpanelTitle {
  font-weight: 950;
  font-size: 16px;
}

.za20dfpanelText {
  margin: 10px 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(15, 23, 42, 0.78);
}

.za20dftagRow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.za20dftag {
  background: rgba(37, 99, 235, 0.10);
  color: rgba(37, 99, 235, 0.95);
  border: 1px solid rgba(37, 99, 235, 0.18);
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 850;
  font-size: 12.5px;
}

.za20dfpanelDivider {
  height: 1px;
  background: rgba(15, 23, 42, 0.08);
  margin: 10px 0 14px;
}

.za20dfpanelSteps {
  display: grid;
  gap: 12px;
  margin-bottom: 14px;
}

.za20dfpanelStep {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.za20dfstepNo {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: rgba(16, 185, 129, 0.14);
  color: rgba(16, 185, 129, 0.95);
  font-weight: 900;
}

.za20dfstepTitle {
  font-weight: 900;
}

.za20dfstepText {
  margin-top: 4px;
  font-size: 12.8px;
  line-height: 1.55;
  color: rgba(15, 23, 42, 0.75);
}

.za20dfsection {
  padding: 34px 0;
}

/* 统一增强板块分隔感：相邻 section 之间增加更粗分割线 */
.za20dfmain > .za20dfsection + .za20dfsection {
  border-top: 2px solid rgba(148, 163, 184, 0.35);
}

/* 主横幅（hero）与服务范围首个 section 之间的分隔线 */
.za20dfmain > .za20dfhero + .za20dfsection {
  border-top: 2px solid rgba(148, 163, 184, 0.35);
}

.za20dfsectionAlt {
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.08), transparent 40%);
  border-top: 1px solid rgba(15, 23, 42, 0.05);
  border-bottom: 1px solid rgba(15, 23, 42, 0.05);
}

.za20dfsectionAlt2 {
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.08), transparent 45%);
  border-top: 1px solid rgba(15, 23, 42, 0.05);
}

.za20dfsectionHead {
  text-align: center;
  margin-bottom: 18px;
}

.za20dfh2 {
  margin: 0;
  font-size: 26px;
  line-height: 1.3;
  letter-spacing: -0.1px;
  font-weight: 980;
}

.za20dfsectionSub {
  margin: 10px auto 0;
  max-width: 720px;
  color: rgba(15, 23, 42, 0.75);
  line-height: 1.8;
  font-size: 14.5px;
}

.za20dfh3 {
  margin: 0;
  font-size: 16px;
  font-weight: 950;
}

.za20dfcardGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.za20dfcard {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.05);
  height: 100%;
}

.za20dfcardIcon {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  background: rgba(37, 99, 235, 0.10);
  color: rgba(37, 99, 235, 0.95);
  display: grid;
  place-items: center;
}

.za20dfcardText {
  margin-top: 10px;
  font-size: 13.7px;
  line-height: 1.75;
  color: rgba(15, 23, 42, 0.78);
}

.za20dfcardMeta {
  margin-top: 12px;
  font-size: 12.7px;
  color: rgba(15, 23, 42, 0.65);
}

.za20dfkeywordPanel {
  margin-top: 14px;
  border-radius: 22px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  background: rgba(255, 255, 255, 0.52);
  padding: 16px;
}

.za20dfkeywordPanelHead {
  margin-bottom: 12px;
}

.za20dfkeywordSub {
  margin-top: 8px;
  color: rgba(15, 23, 42, 0.75);
  line-height: 1.75;
  font-size: 13.8px;
  max-width: 720px;
}

.za20dfkeywordGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.za20dfkeywordCol {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 18px;
  padding: 12px;
}

.za20dfkeywordTitle {
  font-weight: 980;
  font-size: 14.5px;
  margin-bottom: 10px;
}

.za20dftimeline {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 10px;
}

.za20dftimeItem {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
  height: 100%;
}

.za20dftimeNo {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(37, 99, 235, 0.14);
  color: rgba(37, 99, 235, 0.95);
  font-weight: 980;
}

.za20dftimeBody .za20dfh3 {
  margin-top: 2px;
}

.za20dffeatureRow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.za20dffeature {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
  height: 100%;
}

.za20dffeatureTitle {
  font-weight: 980;
}

.za20dffeatureText {
  margin-top: 8px;
  font-size: 13.7px;
  line-height: 1.7;
  color: rgba(15, 23, 42, 0.76);
}

.za20dftwoCol {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 14px;
  align-items: start;
}

.za20dfarticle {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
}

.za20dflist {
  margin: 14px 0 0;
  padding: 0 0 0 18px;
  color: rgba(15, 23, 42, 0.78);
  line-height: 1.85;
  font-size: 14px;
}

.za20dflistItem {
  margin: 6px 0;
}

.za20dfstickyPanel {
  position: sticky;
  top: 96px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  overflow: hidden;
}

.za20dfstickyTop {
  padding: 14px 16px;
  font-weight: 980;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(16, 185, 129, 0.10));
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}

.za20dfstickyBody {
  padding: 14px 16px 10px;
  display: grid;
  gap: 10px;
}

.za20dfstickyRow {
  display: grid;
  gap: 6px;
}

.za20dfstickyK {
  font-size: 12.8px;
  font-weight: 850;
  color: rgba(15, 23, 42, 0.62);
}

.za20dfstickyV {
  font-weight: 980;
  letter-spacing: -0.1px;
}

.za20dfstickyBottom {
  padding: 12px 16px 16px;
}

.za20dfsubGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.za20dfsubCard {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
}

.za20dfprivacyFrame {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 14px;
  align-items: start;
}

.za20dfprivacyRail {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 20px;
  padding: 14px;
}

.za20dfprivacyRailTop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.za20dfprivacyBadge {
  font-size: 12px;
  font-weight: 900;
  color: #fff;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.95), rgba(16, 185, 129, 0.95));
  padding: 6px 10px;
  border-radius: 999px;
}

.za20dfprivacySteps {
  display: grid;
  gap: 10px;
}

.za20dfprivacyStep {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  padding: 10px;
  border: 1px solid rgba(15, 23, 42, 0.06);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.62);
}

.za20dfprivacyNo {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 980;
  color: rgba(37, 99, 235, 0.95);
  background: rgba(37, 99, 235, 0.14);
}

.za20dfprivacyStepTitle {
  font-weight: 950;
}

.za20dfprivacyStepText {
  margin-top: 4px;
  font-size: 13.3px;
  line-height: 1.65;
  color: rgba(15, 23, 42, 0.75);
}

.za20dfprivacyMain {
  display: grid;
  gap: 12px;
}

.za20dfprivacyGrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.za20dfprivacyCard {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 14px;
  height: 100%;
}

.za20dfprivacyTitle {
  font-weight: 980;
}

.za20dfprivacyNote {
  border-radius: 16px;
  border: 1px dashed rgba(16, 185, 129, 0.25);
  background: rgba(16, 185, 129, 0.08);
  padding: 12px 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(15, 23, 42, 0.82);
}

.za20dfcaseGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.za20dfcaseCard {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
}

.za20dfcaseTags {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.za20dfchip {
  font-size: 12.5px;
  font-weight: 900;
  color: rgba(15, 23, 42, 0.75);
  background: rgba(15, 23, 42, 0.05);
  border: 1px solid rgba(15, 23, 42, 0.08);
  padding: 6px 10px;
  border-radius: 999px;
}

.za20dffaqFrame {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 14px;
  align-items: start;
}

.za20dffaqAside {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 20px;
  padding: 14px;
  position: sticky;
  top: 92px;
}

.za20dffaqAsideTitle {
  font-weight: 980;
  font-size: 16px;
}

.za20dffaqAsideList {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.za20dffaqAsideItem {
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 14px;
  background: rgba(248, 250, 252, 0.85);
  padding: 10px 12px;
  font-weight: 850;
  font-size: 13.6px;
  color: rgba(15, 23, 42, 0.82);
}

.za20dffaqAsideTip {
  margin-top: 12px;
  border-radius: 14px;
  border: 1px dashed rgba(37, 99, 235, 0.25);
  background: rgba(37, 99, 235, 0.08);
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.65;
  color: rgba(15, 23, 42, 0.8);
}

.za20dffaqMain {
  display: grid;
  gap: 12px;
}

.za20dffaqGroupTitle {
  font-size: 14.8px;
  font-weight: 980;
  color: rgba(15, 23, 42, 0.84);
  margin-top: 2px;
}

.za20dffaqGrid {
  display: grid;
  gap: 10px;
}

.za20dffaqItem {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  padding: 0 14px;
}

.za20dffaqSummary {
  padding: 12px 0;
  list-style: none;
  cursor: pointer;
  font-weight: 980;
  font-size: 14.4px;
}

.za20dffaqSummary::-webkit-details-marker {
  display: none;
}

.za20dffaqBody {
  padding: 0 0 12px;
  color: rgba(15, 23, 42, 0.78);
  line-height: 1.75;
  font-size: 13.8px;
}

.za20dfcontactWrap {
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 22px;
  padding: 18px;
}

.za20dfcontactHead {
  text-align: center;
}

.za20dfcontactFrame {
  margin-top: 10px;
  display: grid;
  gap: 14px;
}

.za20dfcontactFlow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.za20dfcontactFlowItem {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: start;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  padding: 10px;
}

.za20dfcontactFlowNo {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-weight: 980;
  color: rgba(37, 99, 235, 0.95);
  background: rgba(37, 99, 235, 0.14);
}

.za20dfcontactFlowTitle {
  font-weight: 950;
}

.za20dfcontactFlowText {
  margin-top: 4px;
  font-size: 13.2px;
  line-height: 1.6;
  color: rgba(15, 23, 42, 0.75);
}

.za20dfcontactGrid {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 14px;
  margin-top: 10px;
}

.za20dfform {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
}

.za20dfformRow {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.za20dflabel {
  font-weight: 920;
  font-size: 14px;
}

.za20dfinput,
.za20dfselect,
.za20dftextarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  padding: 11px 12px;
  font-size: 14px;
  outline: none;
  background: rgba(248, 250, 252, 0.9);
}

.za20dftextarea {
  resize: vertical;
}

.za20dfinput:focus,
.za20dfselect:focus,
.za20dftextarea:focus {
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.za20dfformActions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.za20dfformHint {
  margin: 12px 0 0;
  font-size: 12.8px;
  color: rgba(15, 23, 42, 0.68);
  line-height: 1.6;
}

.za20dfcontactAside {
  display: grid;
  gap: 14px;
}

.za20dfasideCard {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 18px;
  padding: 16px;
}

.za20dfasideCardAlt {
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.08), rgba(255, 255, 255, 0.78));
}

.za20dfasideTitle {
  font-weight: 980;
  margin-bottom: 10px;
}

.za20dfbullets {
  display: grid;
  gap: 10px;
}

.za20dfbullet {
  display: flex;
  gap: 10px;
  align-items: center;
  font-weight: 850;
  color: rgba(15, 23, 42, 0.8);
}

.za20dfdot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.95), rgba(16, 185, 129, 0.95));
  box-shadow: 0 8px 16px rgba(37, 99, 235, 0.18);
}

.za20dffooter {
  margin-top: 12px;
  padding: 16px 0 12px;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.65);
}

.za20dffooterInner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 8px;
  align-items: start;
}

.za20dffooterBrand {
  font-weight: 980;
}

.za20dffooterText {
  margin-top: 6px;
  color: rgba(15, 23, 42, 0.72);
  line-height: 1.6;
  font-size: 13px;
}

.za20dffooterTitle {
  font-weight: 980;
  margin-bottom: 6px;
  font-size: 14px;
}

.za20dffooterLinks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.za20dffooterLink {
  text-decoration: none;
  color: rgba(15, 23, 42, 0.8);
  font-weight: 820;
  font-size: 13px;
  padding: 7px 8px;
  border-radius: 10px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.72);
  line-height: 1.25;
}

.za20dffooterLink:hover {
  border-color: rgba(37, 99, 235, 0.25);
}

.za20dfcopyright {
  margin-top: 8px;
  color: rgba(15, 23, 42, 0.65);
  font-size: 12.4px;
  line-height: 1.5;
}

.za20dffooter .za20dflist {
  margin: 6px 0 0;
  padding-left: 16px;
  line-height: 1.6;
  font-size: 13px;
}

.za20dffooter .za20dfcontainer + .za20dfcontainer {
  margin-top: 4px;
}

/* Responsive */
@media (max-width: 1200px) {
  .za20dfcontainer {
    max-width: 1040px;
  }
}

@media (max-width: 980px) {
  .za20dfcontainer {
    padding: 0 16px;
  }
  .za20dfsection {
    padding: 30px 0;
  }
  .za20dfheroGrid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .za20dfheroRight {
    justify-content: flex-start;
    order: 2;
    width: 100%;
  }
  .za20dfheroLeft {
    order: 1;
  }
  .za20dfheroImageWrap {
    max-width: 100%;
  }
  .za20dfquickFacts {
    grid-template-columns: 1fr;
  }
  .za20dfcardGrid {
    grid-template-columns: 1fr 1fr;
  }
  .za20dftimeline {
    grid-template-columns: 1fr;
  }
  .za20dffeatureRow {
    grid-template-columns: 1fr;
  }
  .za20dftwoCol {
    grid-template-columns: 1fr;
  }
  .za20dfstickyPanel {
    position: relative;
    top: auto;
  }
  .za20dfsubGrid {
    grid-template-columns: 1fr;
  }
  .za20dfprivacyFrame {
    grid-template-columns: 1fr;
  }
  .za20dfprivacyGrid {
    grid-template-columns: 1fr 1fr;
  }
  .za20dfcaseGrid {
    grid-template-columns: 1fr;
  }
  .za20dfcontactGrid {
    grid-template-columns: 1fr;
  }
  .za20dfcontactFlow {
    grid-template-columns: 1fr 1fr;
  }
  .za20dffaqFrame {
    grid-template-columns: 1fr;
  }
  .za20dffaqAside {
    position: relative;
    top: auto;
  }
  .za20dffooterInner {
    grid-template-columns: 1fr;
  }

  .za20dfkeywordGrid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .za20dfcontainer {
    padding: 0 14px;
  }
  .za20dfsection {
    padding: 24px 0;
  }
  .za20dfmain > .za20dfsection + .za20dfsection,
  .za20dfmain > .za20dfhero + .za20dfsection {
    border-top-width: 1px;
  }
  .za20dfh1 {
    font-size: 24px;
  }
  .za20dflead {
    line-height: 1.7;
  }
  .za20dfh2 {
    font-size: 23px;
  }
  .za20dfnav {
    width: 100%;
  }
  .za20dfnavList {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }
  .za20dfnavLink {
    width: 100%;
    text-align: center;
    padding: 8px 6px;
    font-size: 12.5px;
  }
  .za20dfbtn {
    width: 100%;
  }
  .za20dfctaRow {
    gap: 10px;
  }
  .za20dfh3 {
    font-size: 15px;
  }
  .za20dfcardText {
    font-size: 13.4px;
    line-height: 1.7;
  }
  .za20dfcardMeta {
    font-size: 12.4px;
    margin-top: 10px;
  }
  .za20dfcardIcon {
    width: 36px;
    height: 36px;
    border-radius: 12px;
  }
  .za20dfcardGrid {
    grid-template-columns: 1fr;
  }
  .za20dfprivacyGrid {
    grid-template-columns: 1fr;
  }
  .za20dfnavList {
    justify-content: flex-start;
  }
  .za20dfheaderInner {
    flex-direction: column;
    align-items: flex-start;
  }
  .za20dfcontactFlow {
    grid-template-columns: 1fr;
  }
  .za20dffooterLinks {
    grid-template-columns: 1fr 1fr;
  }
  .za20dfheroImageWrap {
    padding: 6px;
    border-radius: 14px;
    aspect-ratio: 16 / 9;
  }
  .za20dfheroImage {
    height: 100%;
    object-fit: cover;
    object-position: center;
  }
}

@media (max-width: 420px) {
  .za20dfheader {
    position: static;
  }
  .za20dfmain section[id] {
    scroll-margin-top: 12px;
  }
  .za20dfbrand {
    min-width: 0;
  }
  .za20dfbrandName {
    font-size: 16px;
  }
  .za20dfbrandSub {
    font-size: 11px;
  }
  .za20dfnavList {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    gap: 7px;
  }
  .za20dfnavLink {
    padding: 7px 6px;
    font-size: 12px;
  }
  .za20dftagRow {
    gap: 6px;
    margin-bottom: 10px;
  }
  .za20dfhero {
    padding-top: 20px;
  }
  .za20dfheroImageWrap {
    padding: 5px;
    border-radius: 12px;
  }
  .za20dfheroImage {
    border-radius: 10px;
  }
  .za20dfcard,
  .za20dftimeItem,
  .za20dffeature,
  .za20dfprivacyCard,
  .za20dffaqItem,
  .za20dfkeywordCol,
  .za20dfsubCard {
    padding: 12px;
    border-radius: 14px;
  }
  .za20dfprivacyRail,
  .za20dffaqAside,
  .za20dfkeywordPanel {
    border-radius: 16px;
    padding: 12px;
  }
  .za20dffaqSummary {
    font-size: 14px;
    padding: 10px 0;
  }
  .za20dffaqBody {
    font-size: 13.4px;
    line-height: 1.7;
  }
  .za20dftag {
    font-size: 12px;
    padding: 5px 9px;
  }
  .za20dffaqAsideItem {
    font-size: 13px;
    padding: 9px 10px;
  }
  .za20dfprivacyStepText,
  .za20dffaqBody,
  .za20dfsectionSub {
    line-height: 1.65;
  }
  .za20dffooter {
    margin-top: 14px;
    padding: 12px 0 8px;
  }
  .za20dffooterLinks {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 360px) {
  .za20dfcontainer {
    padding: 0 12px;
  }
  .za20dfh1 {
    font-size: 22px;
    line-height: 1.2;
  }
  .za20dfh2 {
    font-size: 21px;
  }
  .za20dflead,
  .za20dfsectionSub {
    font-size: 13.4px;
  }
  .za20dfbtn {
    font-size: 13px;
    padding: 9px 12px;
  }
  .za20dfnavLink {
    font-size: 11.5px;
    padding: 6px 5px;
  }
  .za20dfbrandName {
    font-size: 15px;
  }
  .za20dfbrandSub {
    font-size: 10.5px;
  }
  .za20dftag {
    font-size: 11.5px;
    padding: 4px 8px;
  }
  .za20dffaqSummary {
    font-size: 13.5px;
  }
}

@media (max-width: 320px) {
  .za20dfcontainer {
    padding: 0 10px;
  }
  .za20dfh1 {
    font-size: 20px;
  }
  .za20dfh2 {
    font-size: 19px;
  }
  .za20dfbtn {
    font-size: 12.5px;
    padding: 8px 10px;
  }
}

/* 移动端栏目导航：汉堡菜单收纳 */
@media (max-width: 768px) {
  .za20dfheaderInner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 10px;
  }
  .za20dfbrand {
    min-width: 0;
  }
  .za20dfnavToggleBtn {
    display: inline-flex;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    background: rgba(255, 255, 255, 0.82);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
  }
  .za20dfnavToggleBtn span {
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: rgba(15, 23, 42, 0.82);
    transition: transform 180ms ease, opacity 180ms ease;
  }
  .za20dfnav {
    grid-column: 1 / -1;
    width: 100%;
    max-height: 0;
    opacity: 0;
    overflow: hidden auto;
    pointer-events: none;
    transition: max-height 220ms ease, opacity 180ms ease, margin-top 180ms ease;
    margin-top: 0;
  }
  .za20dfnavList {
    display: grid;
    grid-template-columns: 1fr;
    justify-content: flex-start;
    width: 100%;
    gap: 6px;
  }
  .za20dfnavList li {
    width: 100%;
  }
  .za20dfnavLink {
    width: 100%;
    text-align: left;
    padding: 9px 10px;
    font-size: 13px;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: rgba(255, 255, 255, 0.7);
  }
  .za20dfnavToggle:checked + .za20dfnavToggleBtn + .za20dfnav {
    max-height: min(70vh, 480px);
    opacity: 1;
    margin-top: 4px;
    pointer-events: auto;
  }
  .za20dfnavToggle:checked + .za20dfnavToggleBtn span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .za20dfnavToggle:checked + .za20dfnavToggleBtn span:nth-child(2) {
    opacity: 0;
  }
  .za20dfnavToggle:checked + .za20dfnavToggleBtn span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
}

/* 触控设备统一提高可点击面积 */
@media (hover: none) and (pointer: coarse) {
  .za20dfnavLink,
  .za20dfbtn,
  .za20dffaqSummary,
  .za20dffooterLink {
    min-height: 42px;
  }
}

/* 窄屏且高度较低设备（小屏横屏/旧机型） */
@media (max-width: 768px) and (max-height: 520px) {
  .za20dfheader {
    position: static;
  }
  .za20dfhero {
    padding-top: 16px;
  }
  .za20dfsection {
    padding: 20px 0;
  }
}

/* 刘海屏安全区 */
@supports (padding: max(0px)) {
  .za20dfheader {
    padding-top: env(safe-area-inset-top);
  }
  .za20dffooter {
    padding-bottom: max(26px, env(safe-area-inset-bottom));
  }
}