/* 页面布局、组件与响应式样式 */
.section {
  padding-block:84px;
}
.section-label {
  display:block;
  color:var(--blue);
  font-size:14px;
  font-weight:600;
  margin-bottom:12px;
}
.section h2 {
  font-size:34px;
  line-height:1.4;
  letter-spacing:-.7px;
  margin:0 0 17px;
  font-weight:700;
  text-wrap:balance;
}
.section-intro {
  max-width:780px;
  color:var(--muted);
  margin:0 0 36px;
  line-height:1.8;
}
.section--tinted {
  background:var(--pale);
}
.small-note {
  font-size:13px;
  line-height:1.8;
  color:var(--muted);
}
.facts {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  padding-block:29px;
  border-bottom:1px solid var(--line);
}
.facts p {
  margin:0;
  padding-left:35px;
  border-right:1px solid var(--line);
  display:flex;
  gap:16px;
  align-items:center;
}
.facts p:first-child {
  padding-left:0;
}
.facts p:last-child {
  border-right:0;
}
.facts b {
  font-size:34px;
  line-height:1.2;
  font-weight:600;
  color:var(--blue);
}
.facts span {
  font-size:14px;
  color:var(--muted);
  max-width:110px;
}
.features,.principles,.audiences,.pitfalls,.experience,.trust-section {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.features>.section-label,.features>h2,.features>.section-intro,.principles>.section-label,.principles>h2,.principles>.section-intro,.audiences>.section-label,.audiences>h2,.audiences>.section-intro,.pitfalls>.section-label,.pitfalls>h2,.pitfalls>.section-intro,.experience>.section-label,.experience>h2,.experience>.section-intro,.trust-section>.section-label,.trust-section>h2,.trust-section>.section-intro {
  grid-column:1/-1;
  margin-bottom:0;
}
.features>.section-label,.principles>.section-label,.audiences>.section-label,.pitfalls>.section-label,.experience>.section-label,.trust-section>.section-label {
  margin-bottom:-13px;
}
.features>.section-intro,.principles>.section-intro,.audiences>.section-intro,.pitfalls>.section-intro,.experience>.section-intro,.trust-section>.section-intro {
  margin-bottom:13px;
}
.feature-card {
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:31px;
  background:#fff;
}
.feature-icon {
  width:42px;
  height:42px;
  fill:none;
  stroke:currentColor;
  stroke-width:1.5;
  stroke-linecap:round;
  stroke-linejoin:round;
  color:var(--blue);
  margin-bottom:15px;
}
.feature-card h3,.principles h3,.trust-section h3 {
  font-size:20px;
  font-weight:650;
  margin:0 0 12px;
}
.feature-card p,.principles article p,.trust-section article p {
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
  margin:0 0 18px;
}
.feature-card a,.scene-card a {
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:14px;
  font-weight:600;
  min-height:48px;
  text-decoration:none;
  gap:8px;
}
.feature-card a span,.scene-card a span {
  font-size:20px;
}
.feature-card a:hover,.scene-card a:hover {
  text-decoration:underline;
  text-underline-offset:5px;
}
.inline-note {
  grid-column:1/-1;
  display:flex;
  gap:12px;
  align-items:center;
  background:#eff5ff;
  border:1px solid #dfe9fa;
  border-radius:8px;
  padding:17px 21px;
  color:#36516f;
}
.inline-note p {
  margin:0;
  font-size:14px;
}
.inline-note .icon {
  color:var(--blue);
}
.pricing-grid {
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.pricing-grid>.section-label,.pricing-grid>h2,.pricing-grid>.section-intro,.pricing-note {
  grid-column:1/-1;
}
.pricing-grid>.section-label {
  margin-bottom:-13px;
}
.pricing-grid>h2 {
  margin-bottom:0;
}
.pricing-grid>.section-intro {
  margin-bottom:13px;
}
.price-card {
  padding:31px 29px 28px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:#fff;
  position:relative;
  display:flex;
  flex-direction:column;
}
.price-tag {
  color:#425e83;
  background:#f1f5fb;
  align-self:flex-start;
  padding:5px 10px;
  font-size:12px;
  border-radius:5px;
}
.price-card h3 {
  font-size:24px;
  margin:20px 0 7px;
}
.price-summary {
  font-size:13px;
  color:var(--muted);
  margin:0;
}
.price {
  display:flex;
  align-items:baseline;
  gap:9px;
  margin:25px 0 22px;
}
.price b {
  font-size:48px;
  line-height:1.2;
  letter-spacing:-1px;
  font-weight:650;
}
.price span {
  font-size:14px;
  color:var(--muted);
}
.price-card ul {
  list-style:none;
  border-top:1px solid var(--line);
  padding:21px 0 23px;
  margin:0;
  font-size:14px;
  color:#435672;
  line-height:2.6;
}
.price-card li::before {
  content:'✓';
  color:var(--green);
  margin-right:10px;
}
.price-card .btn {
  width:100%;
  margin-top:auto;
  font-size:14px;
}
.price-card--featured {
  border:2px solid var(--blue);
  padding:30px 28px 27px;
  box-shadow:0 9px 22px #1555d508;
}
.price-card--featured .price-tag {
  background:#eaf1ff;
  color:var(--blue);
}
.price-card--featured .price b {
  color:var(--blue);
}
.pricing-note {
  font-size:13px;
  color:var(--muted);
  margin:0;
  line-height:1.8;
}
.estimate-section {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:100px;
  border-bottom:1px solid var(--line);
}
.estimate-copy>p {
  color:var(--muted);
  max-width:440px;
  margin:0 0 22px;
}
.estimate-form {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:13px 16px;
  align-items:center;
  background:#f5f8fd;
  border:1px solid var(--line);
  padding:28px;
  border-radius:var(--radius);
}
.estimate-form label {
  font-size:14px;
  font-weight:600;
}
.estimate-form input,.estimate-form select {
  grid-column:2;
  border:1px solid #bfcee2;
  background:#fff;
  border-radius:6px;
  min-height:48px;
  padding:10px;
  width:100%;
  font-size:14px;
}
.estimate-form #estimate-hint,.estimate-form .form-error {
  grid-column:1/-1;
  margin:0;
}
.form-error {
  color:#b32330;
}
.estimate-result {
  grid-column:1;
  display:flex;
  flex-direction:column;
  font-size:13px;
  color:var(--muted);
  margin-top:7px;
}
.estimate-result b {
  font-size:33px;
  line-height:1.3;
  color:var(--blue);
  font-weight:650;
}
.estimate-form .btn {
  font-size:14px;
  margin-top:7px;
}
.compare-table {
  border-collapse:collapse;
  width:100%;
  font-size:14px;
  margin:0 0 19px;
}
.compare-table caption {
  text-align:left;
  font-size:13px;
  color:var(--muted);
  padding-bottom:13px;
}
.compare-table th,.compare-table td {
  text-align:left;
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  width:25%;
}
.compare-table thead th {
  background:#f0f5fd;
  color:#294970;
  border-top:1px solid var(--line);
  font-weight:650;
}
.compare-table tbody th {
  font-weight:500;
  color:#53647c;
}
.compare-table td:nth-child(3),.compare-table th:nth-child(3) {
  background:#f1f6ff;
  color:#1948a0;
}
.section--navy {
  background:#16365d;
  color:#fff;
}
.section--navy .section-label {
  color:#adc9ff;
}
.section--navy .section-intro {
  color:#c8d8ec;
}
.guide-grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:35px;
}
.guide-grid>.section-label,.guide-grid>h2,.guide-grid>.section-intro,.guide-note {
  grid-column:1/-1;
  margin-bottom:0;
}
.guide-grid>.section-label {
  margin-bottom:-23px;
}
.guide-grid>.section-intro {
  margin-bottom:8px;
}
.step {
  position:relative;
}
.step-num {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:47px;
  height:47px;
  border:1px solid #6e91c0;
  border-radius:50%;
  color:#d4e4ff;
  font-size:18px;
  margin-bottom:21px;
}
.step:not(:last-of-type)::after {
  content:'';
  position:absolute;
  height:1px;
  background:#577596;
  top:23px;
  left:70px;
  width:calc(100% - 55px);
}
.step h3 {
  font-size:19px;
  margin:0 0 12px;
  font-weight:600;
}
.step p {
  font-size:14px;
  line-height:1.9;
  color:#c4d3e7;
  margin:0;
}
.guide-note {
  display:flex;
  align-items:center;
  gap:13px;
  border-top:1px solid #547290;
  padding-top:27px;
  margin-top:12px;
}
.guide-note p {
  font-size:13px;
  color:#d5e0ee;
  flex:1;
  margin:0;
}
.btn--light {
  color:#18395f;
  font-size:14px;
}
.report-section {
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:25px 60px;
}
.report-section>.section-label,.report-section>h2,.report-section>.section-intro {
  grid-column:1/-1;
  margin-bottom:0;
}
.report-section>.section-label {
  margin-bottom:-13px;
}
.report-section>.section-intro {
  margin-bottom:12px;
}
.report-chart {
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:30px;
  background:#fff;
}
.report-chart h3 {
  font-size:18px;
  margin:0 0 28px;
}
.similarity-bar {
  height:66px;
  display:flex;
  border-radius:7px;
  overflow:hidden;
  gap:3px;
}
.similarity-bar span {
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:12px;
  font-weight:600;
}
.bar-citation {
  background:#2462d5;
  color:#fff;
  flex:5;
  min-width:36px;
}
.bar-review {
  background:#a34c00;
  color:#fff;
  flex:7;
  min-width:40px;
}
.bar-original {
  background:#eaf1fb;
  color:#395577;
  flex:88;
}
.chart-legend {
  padding:0;
  margin:24px 0 22px;
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  list-style:none;
  font-size:12px;
  color:var(--muted);
}
.chart-legend li::before {
  content:'';
  width:8px;
  height:8px;
  display:inline-block;
  margin-right:7px;
  border-radius:2px;
  background:#2462d5;
}
.chart-legend li:nth-child(2)::before {
  background:#a34c00;
}
.chart-legend li:nth-child(3)::before {
  background:#b6cbed;
}
.report-chart p {
  font-size:14px;
  color:var(--muted);
  margin:0;
  line-height:1.9;
}
.report-terms {
  margin:0;
}
.report-terms dt {
  font-size:15px;
  font-weight:600;
  margin:0 0 4px;
}
.report-terms dd {
  margin:0 0 21px;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
}
.ai-grid {
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:85px;
  align-items:center;
}
.ai-copy>p {
  color:var(--muted);
  line-height:1.85;
  margin:0 0 20px;
}
.ai-copy ul {
  padding-left:22px;
  color:#455a76;
  font-size:14px;
  line-height:2.2;
  margin:0 0 23px;
}
.ai-copy .btn {
  margin-top:4px;
  font-size:14px;
}
.ai-states {
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:29px;
}
.ai-states h3 {
  font-size:18px;
  margin:0 0 22px;
}
.ai-state {
  display:flex;
  gap:22px;
  align-items:center;
  border-bottom:1px solid var(--line);
  padding:19px 0;
}
.ai-state b {
  font-size:30px;
  font-weight:600;
  color:var(--blue);
  min-width:95px;
}
.ai-state p {
  margin:0;
  color:var(--muted);
  font-size:14px;
  line-height:1.8;
}
.ai-state-note {
  font-size:12px;
  color:var(--muted);
  margin:19px 0 0;
  line-height:1.8;
}
.principles {
  border-bottom:1px solid var(--line);
}
.principles article {
  padding:13px 27px 0 0;
  border-right:1px solid var(--line);
}
.principles article:last-child {
  border:0;
  padding-right:0;
}
.scene-card {
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  padding-bottom:20px;
}
.image-open {
  display:block;
  width:100%;
  padding:0;
  border:0;
  background:#e5edf7;
  cursor:zoom-in;
  overflow:hidden;
  aspect-ratio:8/5;
}
.image-open picture {
  display:block;
}
.image-open img {
  display:block;
  width:100%;
  height:auto;
  transition:transform .3s;
}
.image-open:hover img {
  transform:scale(1.03);
}
.scene-card h3 {
  margin:24px 25px 12px;
  font-size:19px;
}
.scene-card p {
  margin:0 25px 14px;
  font-size:14px;
  color:var(--muted);
  line-height:1.9;
}
.scene-card a {
  margin:0 25px;
}
.product-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.product-grid>.section-label,.product-grid>h2,.product-grid>.section-intro,.product-grid>.small-note {
  grid-column:1/-1;
  margin-bottom:0;
}
.product-grid>.section-label {
  margin-bottom:-13px;
}
.product-grid>.section-intro {
  margin-bottom:12px;
}
.product-card {
  padding:32px 35px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
}
.product-name {
  display:block;
  font-family:Arial,sans-serif;
  font-size:24px;
  font-weight:650;
  color:var(--blue);
  margin-bottom:15px;
}
.product-card h3 {
  font-size:18px;
  margin:0 0 10px;
}
.product-card p {
  font-size:14px;
  line-height:1.85;
  color:var(--muted);
  margin:0 0 15px;
}
.product-card ul {
  list-style:none;
  font-size:14px;
  line-height:2.3;
  padding:0;
  margin:0;
  color:var(--muted);
}
.product-card li::before {
  content:'✓';
  margin-right:9px;
  color:var(--green);
}
.pitfalls {
  gap:24px 36px;
  border-bottom:1px solid var(--line);
}
.pitfalls article {
  display:grid;
  grid-template-columns:25px 1fr;
  gap:4px 11px;
  padding-block:14px;
}
.tip-check {
  color:var(--green);
  margin-top:1px;
}
.pitfalls h3 {
  font-size:17px;
  margin:0;
  font-weight:600;
}
.pitfalls article p {
  grid-column:2;
  font-size:14px;
  color:var(--muted);
  line-height:1.9;
  margin:7px 0 0;
}
.quote-card {
  display:grid;
  grid-template-columns:45px 1fr;
  gap:0 13px;
  padding:25px 24px;
  border:1px solid var(--line);
  border-radius:12px;
}
.quote-avatar {
  width:44px;
  height:44px;
  padding:10px;
  background:#edf3fb;
  border-radius:50%;
  grid-row:1/3;
  stroke:var(--blue);
  fill:none;
  stroke-width:1.7;
  stroke-linejoin:round;
  stroke-linecap:round;
}
.quote-card h3 {
  font-size:15px;
  margin:0;
  font-weight:600;
}
.quote-card>span {
  font-size:12px;
  color:var(--muted);
}
.quote-card p {
  grid-column:1/-1;
  font-size:14px;
  color:#475c76;
  line-height:1.9;
  margin:19px 0 0;
}
.faq-layout {
  display:grid;
  grid-template-columns:320px 1fr;
  gap:90px;
}
.faq-heading h2 {
  font-size:36px;
  line-height:1.5;
}
.faq-heading>p {
  color:var(--muted);
  font-size:15px;
  line-height:1.85;
  margin:0 0 27px;
}
.faq-heading .small-note {
  display:block;
  margin-top:20px;
}
.faq-heading .btn {
  font-size:14px;
  background:transparent;
}
.faq-tabs {
  display:flex;
  border-bottom:1px solid #d0dceb;
  gap:20px;
  flex-wrap:wrap;
  margin-bottom:7px;
}
.faq-tabs button {
  min-height:51px;
  border:0;
  border-bottom:2px solid transparent;
  font-size:14px;
  color:var(--muted);
  padding:0 1px;
  background:transparent;
}
.faq-tabs [aria-selected=true] {
  color:var(--blue);
  border-bottom-color:var(--blue);
  font-weight:600;
}
.faq-content details {
  border-bottom:1px solid #d7e1ee;
}
.faq-content summary {
  padding:20px 35px 20px 0;
  position:relative;
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  list-style-type:'';
}
.faq-content summary::-webkit-details-marker {
  visibility:hidden;
}
.faq-content summary::after {
  content:'+';
  position:absolute;
  right:2px;
  top:15px;
  font-size:22px;
  font-weight:400;
  color:#607b9c;
}
.faq-content details[open] summary::after {
  content:'−';
}
.faq-content details[open] summary {
  color:var(--blue);
}
.faq-content details p {
  font-size:14px;
  line-height:1.85;
  color:var(--muted);
  margin:0;
  padding:0 25px 22px 0;
}
.glossary {
  border-bottom:1px solid var(--line);
}
.glossary dl {
  display:grid;
  grid-template-columns:245px 1fr;
  gap:22px 45px;
  margin:0;
}
.glossary dt {
  font-size:15px;
  font-weight:600;
}
.glossary dd {
  font-size:14px;
  color:var(--muted);
  line-height:1.9;
  margin:0;
}
.trust-section article {
  padding:21px 24px;
  background:#f7f9fd;
  border-radius:12px;
}
.trust-section h3 {
  font-size:18px;
}
.trust-section .feature-icon {
  width:34px;
  height:34px;
}
.trust-section article p {
  font-size:14px;
  margin:0;
}
.reading-tools {
  grid-column:1/-1;
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:13px;
  margin-top:14px;
  padding-top:25px;
  border-top:1px solid var(--line);
}
.reading-tools>span {
  color:var(--muted);
  font-size:14px;
  margin-right:auto;
}
.reading-tools button {
  display:flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:6px;
  min-height:48px;
  padding:11px 13px;
  color:#435975;
}
.reading-tools [aria-pressed=true] {
  color:var(--blue);
  border-color:#94b2ea;
  background:#eef4ff;
}
.reading-tools .icon {
  width:17px;
  height:17px;
}
.final-cta {
  padding:70px 0 75px;
  background:#edf4ff;
  text-align:center;
}
.final-icon {
  height:42px;
  width:42px;
  fill:none;
  stroke:var(--blue);
  stroke-width:1.6;
  stroke-linecap:round;
  stroke-linejoin:round;
  margin-bottom:17px;
}
.final-cta h2 {
  font-size:32px;
  line-height:1.4;
  margin:0 0 15px;
  letter-spacing:-.7px;
  text-wrap:balance;
}
.final-cta p {
  color:var(--muted);
  margin:0 0 28px;
  font-size:15px;
}
.final-cta .btn {
  margin:0 6px;
  font-size:15px;
  min-width:175px;
}
.final-cta .small-note {
  display:block;
  margin-top:22px;
  font-size:12px;
}
.site-footer {
  background:#fff;
  padding:59px 0 27px;
}
.footer-grid {
  display:grid;
  grid-template-columns:2.25fr repeat(3,1fr);
  gap:35px;
}
.footer-brand img {
  width:157px;
  height:auto;
  margin-bottom:15px;
}
.footer-brand p {
  font-size:13px;
  max-width:320px;
  color:var(--muted);
  line-height:1.9;
  margin:0 0 17px;
}
.footer-brand>span {
  font-size:12px;
  color:var(--muted);
}
.footer-group {
  display:flex;
  flex-direction:column;
  align-items:flex-start;
}
.footer-group b {
  font-size:14px;
  font-weight:600;
  margin-bottom:10px;
}
.footer-group button {
  font-size:13px;
  color:var(--muted);
  border:0;
  background:transparent;
  padding:10px 0;
  min-height:44px;
  text-align:left;
}
.footer-group button:hover {
  color:var(--blue);
}
.footer-legal {
  grid-column:1/-1;
  font-size:12px;
  color:var(--muted);
  line-height:1.8;
  margin:0;
  padding-top:25px;
  border-top:1px solid var(--line);
}
.footer-meta {
  grid-column:1/-1;
  margin:-20px 0 0;
  display:flex;
  gap:25px;
  color:var(--muted);
  font-size:12px;
  align-items:center;
  flex-wrap:wrap;
}
.footer-meta button {
  border:0;
  background:transparent;
  min-height:48px;
  padding:8px 0;
  margin-left:auto;
  color:var(--muted);
  font-size:12px;
}
.quick-nav {
  position:fixed;
  right:15px;
  bottom:30px;
  display:flex;
  flex-direction:column;
  z-index:10;
  background:#fff;
  box-shadow:0 3px 22px #183b6910;
  border:1px solid var(--line);
  border-radius:9px;
  overflow:hidden;
}
.quick-nav a,.quick-nav button {
  width:49px;
  min-height:55px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:3px;
  padding:7px;
  background:#fff;
  border:0;
  border-bottom:1px solid var(--line);
  text-decoration:none;
  color:#4f6480;
  font-size:10px;
}
.quick-nav .icon {
  width:19px;
  height:19px;
}
.quick-nav a:hover,.quick-nav button:hover {
  color:var(--blue);
  background:#f3f7ff;
}
.quick-nav button {
  border-bottom:0;
}
.mobile-cta {
  position:absolute;
  visibility:hidden;
  pointer-events:none;
}
.mobile-menu {
  position:fixed;
  inset:72px 0 auto;
  background:#fff;
  z-index:30;
  border-bottom:1px solid var(--line);
  box-shadow:0 15px 30px #152b4914;
  padding:18px 24px;
  max-height:calc(100dvh - 72px);
  overflow:auto;
}
.mobile-menu p {
  font-size:13px;
  color:var(--muted);
  margin:8px 0;
}
.mobile-menu a,.mobile-menu button {
  display:block;
  text-align:left;
  border:0;
  border-bottom:1px solid #edf1f7;
  text-decoration:none;
  min-height:48px;
  padding:12px 0;
  background:#fff;
  width:100%;
  color:var(--ink);
  font-size:16px;
}
.mobile-menu button {
  color:var(--blue);
}
dialog {
  border:1px solid var(--line);
  border-radius:16px;
  color:var(--ink);
  padding:35px;
  width:min(590px,calc(100% - 40px));
  max-height:85dvh;
  box-shadow:0 15px 65px #16335733;
}
dialog::backdrop {
  background:#10254199;
  backdrop-filter:blur(3px);
}
.dialog-close {
  position:absolute;
  right:9px;
  top:9px;
  width:48px;
  height:48px;
  border:0;
  background:#fff;
  border-radius:8px;
  display:grid;
  place-content:center;
  color:var(--muted);
}
.info-dialog h2 {
  font-size:25px;
  margin:10px 32px 22px 0;
}
.info-dialog p,.info-dialog li {
  font-size:16px;
  line-height:1.8;
  color:#455972;
}
.info-dialog ul {
  padding-left:23px;
}
.info-dialog .btn {
  font-size:14px;
}
.info-dialog form {
  display:flex;
  flex-direction:column;
  gap:14px;
}
.info-dialog textarea {
  font:inherit;
  border:1px solid #b9cae1;
  border-radius:8px;
  padding:12px;
  resize:vertical;
  min-height:130px;
}
.image-dialog {
  width:min(1030px,calc(100% - 32px));
  padding:56px 20px 15px;
}
.image-dialog img {
  display:block;
  width:100%;
  height:auto;
  border-radius:8px;
}
.image-dialog p {
  font-size:14px;
  margin:13px 0 0;
  color:var(--muted);
}
#toast {
  position:fixed;
  bottom:30px;
  left:50%;
  transform:translateX(-50%);
  z-index:80;
  background:#17365a;
  color:#fff;
  padding:12px 23px;
  border-radius:8px;
  box-shadow:0 8px 25px #10223c20;
  font-size:14px;
  max-width:calc(100% - 40px);
  text-align:center;
  margin:0;
  pointer-events:none;
}
.site-header.is-away {
  transform:translateY(-102%);
}
body.large-text {
  --body-size:18px;
}
body.large-text .section p,body.large-text .section li,body.large-text .section dd,body.large-text .faq-content summary {
  font-size:18px;
}
body.large-text .small-note {
  font-size:15px;
}
.noscript-notice {
  padding:20px;
  margin:0;
  background:#fff5d9;
  color:#72520e;
}
body:has(dialog[open]) {
  overflow:hidden;
}
@media(min-width:1600px) {
  .quick-nav {
    right:max(25px,calc((100vw - 1340px)/2 - 55px));
  }
}
@media(max-width:1280px) {
  .quick-nav {
    right:8px;
  }
  .quick-nav a,.quick-nav button {
    width:42px;
  }
  .wrap {
    width:calc(100% - 100px);
  }
}
@media(max-width:1100px) {
  .section {
    padding-block:65px;
  }
  .section h2 {
    font-size:30px;
  }
  .estimate-section {
    gap:45px;
  }
  .faq-layout {
    gap:45px;
    grid-template-columns:260px 1fr;
  }
  .feature-card {
    padding:25px;
  }
  .price-card {
    padding:25px 22px;
  }
  .price-card--featured {
    padding:24px 21px;
  }
  .price-summary {
    font-size:12px;
  }
  .ai-grid {
    gap:45px;
  }
  .report-section {
    gap:25px 35px;
  }
  .guide-grid {
    gap:23px;
  }
  .footer-grid {
    gap:25px;
  }
  .hero h1 {
    font-size:43px;
  }
}
@media(max-width:800px) {
  .wrap {
    width:calc(100% - 40px);
  }
  .section {
    padding-block:52px;
  }
  .section h2 {
    font-size:28px;
    letter-spacing:-.5px;
    line-height:1.45;
  }
  .section-intro {
    font-size:16px;
    line-height:1.6;
    margin-bottom:28px;
  }
  .section-label {
    font-size:14px;
  }
  .features,.principles,.audiences,.pitfalls,.experience,.trust-section,.pricing-grid {
    grid-template-columns:1fr;
    gap:20px;
  }
  .feature-card {
    padding:27px;
  }
  .feature-card p,.principles article p,.trust-section article p,.scene-card p,.pitfalls article p,.quote-card p,.product-card p,.product-card li {
    font-size:16px;
    line-height:1.6;
  }
  .feature-card h3,.principles h3 {
    font-size:21px;
  }
  .feature-card a,.scene-card a {
    font-size:16px;
  }
  .features>.section-label,.principles>.section-label,.audiences>.section-label,.pitfalls>.section-label,.experience>.section-label,.trust-section>.section-label,.pricing-grid>.section-label {
    margin-bottom:-8px;
  }
  .inline-note {
    align-items:flex-start;
    padding:18px;
  }
  .inline-note p {
    font-size:16px;
    line-height:1.6;
  }
  .inline-note .icon {
    margin-top:2px;
  }
  .facts {
    grid-template-columns:1fr 1fr;
    padding-block:26px;
    gap:25px 10px;
  }
  .facts p {
    padding-left:0;
    gap:12px;
    border-right:0;
  }
  .facts b {
    font-size:30px;
  }
  .facts span {
    font-size:13px;
    max-width:140px;
  }
  .pricing-grid>.section-intro {
    margin-bottom:8px;
  }
  .price-card,.price-card--featured {
    padding:28px;
  }
  .price-card h3 {
    font-size:25px;
  }
  .price-summary {
    font-size:14px;
  }
  .price-card ul {
    font-size:16px;
    line-height:2.3;
  }
  .price-card .btn {
    font-size:16px;
    min-height:52px;
  }
  .pricing-note {
    font-size:14px;
    line-height:1.7;
  }
  .estimate-section {
    grid-template-columns:1fr;
    gap:24px;
  }
  .estimate-copy>p {
    max-width:none;
    font-size:16px;
    line-height:1.6;
  }
  .estimate-copy>.small-note {
    font-size:14px;
  }
  .estimate-form {
    padding:23px;
    grid-template-columns:1fr;
    gap:10px;
  }
  .estimate-form label {
    font-size:16px;
  }
  .estimate-form input,.estimate-form select {
    grid-column:1;
    font-size:16px;
    margin-bottom:10px;
  }
  .estimate-form .btn {
    font-size:16px;
    grid-column:1;
    min-height:52px;
  }
  .estimate-result {
    margin:10px 0;
  }
  .compare-table {
    font-size:16px;
  }
  .compare-table thead {
    position:absolute;
    clip-path:inset(50%);
    width:1px;
    height:1px;
    overflow:hidden;
  }
  .compare-table tr {
    display:block;
    border:1px solid var(--line);
    border-radius:8px;
    overflow:hidden;
    margin-bottom:16px;
  }
  .compare-table tbody th {
    display:block;
    width:100%;
    background:#edf3fc;
    padding:14px 17px;
    font-weight:600;
    color:var(--ink);
    font-size:16px;
  }
  .compare-table td {
    display:flex;
    width:100%;
    gap:15px;
    justify-content:space-between;
    align-items:center;
    padding:14px 17px;
    font-size:15px;
    text-align:right;
  }
  .compare-table td::before {
    content:attr(data-label);
    font-weight:500;
    text-align:left;
    color:#52637b;
    flex-shrink:0;
  }
  .compare-table td:last-child {
    border:0;
  }
  .comparison>.small-note {
    font-size:14px;
  }
  .guide-grid {
    grid-template-columns:1fr;
    gap:25px;
  }
  .guide-grid>.section-label {
    margin-bottom:-13px;
  }
  .guide-grid>.section-intro {
    margin-bottom:5px;
  }
  .step {
    display:grid;
    grid-template-columns:48px 1fr;
    gap:0 17px;
  }
  .step-num {
    grid-row:1/3;
    margin:0;
    font-size:18px;
  }
  .step h3 {
    font-size:19px;
    margin:0 0 8px;
  }
  .step p {
    font-size:16px;
    line-height:1.6;
  }
  .step:not(:last-of-type)::after {
    height:calc(100% - 28px);
    width:1px;
    left:23px;
    top:65px;
  }
  .guide-note {
    flex-wrap:wrap;
    margin-top:0;
  }
  .guide-note p {
    font-size:16px;
    line-height:1.6;
    flex-basis:calc(100% - 45px);
  }
  .guide-note .btn {
    width:100%;
    margin-top:10px;
    font-size:16px;
  }
  .report-section {
    grid-template-columns:1fr;
    gap:23px;
  }
  .report-chart {
    padding:25px;
  }
  .report-chart p,.report-terms dd {
    font-size:16px;
    line-height:1.6;
  }
  .report-terms dt {
    font-size:17px;
  }
  .chart-legend {
    font-size:13px;
    gap:12px;
  }
  .ai-grid {
    grid-template-columns:1fr;
    gap:28px;
  }
  .ai-copy p {
    font-size:16px;
    line-height:1.6;
  }
  .ai-copy ul {
    font-size:16px;
    line-height:1.8;
  }
  .ai-copy .small-note {
    font-size:14px;
    line-height:1.6;
  }
  .ai-copy .btn {
    width:100%;
    font-size:16px;
  }
  .ai-states {
    padding:24px;
  }
  .ai-state {
    gap:15px;
  }
  .ai-state b {
    font-size:27px;
    min-width:80px;
  }
  .ai-state p {
    font-size:16px;
    line-height:1.6;
  }
  .ai-state-note {
    font-size:14px;
    line-height:1.6;
  }
  .principles article {
    padding:20px 0;
    border-right:0;
    border-bottom:1px solid var(--line);
  }
  .principles article:last-child {
    padding:20px 0 0;
  }
  .scene-card h3 {
    font-size:21px;
  }
  .scene-card p {
    margin-bottom:15px;
  }
  .product-grid {
    grid-template-columns:1fr;
    gap:20px;
  }
  .product-card {
    padding:27px;
  }
  .product-card h3 {
    font-size:20px;
  }
  .product-card li {
    margin-bottom:9px;
  }
  .product-grid>.small-note {
    font-size:14px;
  }
  .pitfalls article {
    padding-block:9px;
  }
  .pitfalls h3 {
    font-size:18px;
  }
  .tip-check {
    font-size:20px;
  }
  .quote-card {
    padding:24px;
  }
  .quote-card h3 {
    font-size:17px;
  }
  .quote-card>span {
    font-size:13px;
  }
  .faq-layout {
    grid-template-columns:1fr;
    gap:26px;
  }
  .faq-heading h2 {
    font-size:30px;
  }
  .faq-heading h2 br {
    position:absolute;
    visibility:hidden;
  }
  .faq-heading p {
    font-size:16px;
    line-height:1.6;
  }
  .faq-heading .btn {
    font-size:16px;
  }
  .faq-tabs {
    gap:18px;
  }
  .faq-tabs button {
    font-size:14px;
  }
  .faq-content summary {
    font-size:16px;
    line-height:1.6;
    padding-block:21px;
  }
  .faq-content details p {
    font-size:16px;
    line-height:1.6;
    padding-right:14px;
  }
  .glossary dl {
    grid-template-columns:1fr;
    gap:9px;
  }
  .glossary dt {
    font-size:17px;
  }
  .glossary dd {
    font-size:16px;
    line-height:1.6;
    margin-bottom:20px;
  }
  .reading-tools {
    gap:12px;
  }
  .reading-tools>span {
    width:100%;
    font-size:16px;
  }
  .reading-tools button {
    font-size:14px;
    flex:1 1 40%;
    justify-content:center;
  }
  .final-cta {
    padding:50px 0;
  }
  .final-cta h2 {
    font-size:27px;
    line-height:1.5;
  }
  .final-cta p {
    font-size:16px;
    line-height:1.6;
  }
  .final-cta .btn {
    width:100%;
    margin:0 0 12px;
    min-height:53px;
    font-size:16px;
  }
  .final-cta .small-note {
    font-size:13px;
    margin-top:8px;
  }
  .footer-grid {
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:28px 18px;
  }
  .footer-brand {
    grid-column:1/-1;
  }
  .footer-brand p {
    font-size:16px;
    line-height:1.6;
    max-width:none;
  }
  .footer-brand>span {
    font-size:14px;
  }
  .footer-group b {
    font-size:14px;
  }
  .footer-group button {
    font-size:14px;
    min-height:48px;
  }
  .footer-legal {
    font-size:14px;
    line-height:1.6;
  }
  .footer-meta {
    font-size:13px;
    gap:10px;
    line-height:1.6;
    margin-top:-14px;
  }
  .footer-meta button {
    margin-left:0;
    font-size:13px;
    min-height:48px;
  }
  .site-footer {
    padding-top:42px;
    padding-bottom:110px;
  }
  .quick-nav {
    visibility:hidden;
    pointer-events:none;
    position:absolute;
    right:0;
    bottom:0;
  }
  .mobile-cta {
    position:fixed;
    visibility:visible;
    pointer-events:auto;
    bottom:0;
    left:0;
    right:0;
    padding:11px 20px calc(11px + env(safe-area-inset-bottom));
    display:grid;
    grid-template-columns:.8fr 1.2fr;
    gap:12px;
    background:#ffffffed;
    border-top:1px solid var(--line);
    backdrop-filter:blur(12px);
    z-index:25;
  }
  .mobile-cta .btn {
    font-size:16px;
    min-height:48px;
    padding:10px 16px;
  }
  #toast {
    bottom:100px;
    font-size:16px;
  }
  dialog {
    padding:28px 23px;
    max-height:80dvh;
  }
  .image-dialog {
    padding:56px 14px 15px;
  }
  .hero h1 {
    font-size:40px;
  }
  .site-header.is-away:has(~.mobile-menu:not([hidden])) {
    transform:none;
  }
}
@media(max-width:374px) {
  .hero h1 {
    font-size:35px;
  }
  .hero-actions {
    gap:10px;
  }
  .hero-actions .btn {
    font-size:14px;
    padding:12px;
  }
  .hero-actions .icon {
    width:18px;
  }
  .hero-points {
    font-size:12px;
  }
  .report-score-row {
    gap:18px;
  }
  .report-score-row p {
    font-size:12px;
  }
  .report-score-row b {
    font-size:14px;
  }
  .hero-shortcuts {
    gap:15px;
    font-size:13px;
  }
  .faq-tabs {
    gap:11px;
  }
  .faq-tabs button {
    font-size:13px;
  }
  .footer-grid {
    gap:25px 10px;
  }
  .footer-group b,.footer-group button {
    font-size:13px;
  }
}
@media(prefers-reduced-motion:reduce) {
  .image-open:hover img {
    transform:none;
  }
}
.btn {
  white-space:nowrap;
}
.header-cta,.footer-group button {
  min-height:48px;
}
.score-ring {
  border:0;
  background:radial-gradient(closest-side,#fff 81%,transparent 82%),conic-gradient(var(--blue) 0 12%,#e9f0fb 12% 100%);
}
.badge-ai {
  top:-20px;
}
.image-open.report-preview-trigger {
  aspect-ratio:1000/758;
  background:#fff;
}
.report-demo {
  padding-bottom:35px;
}
.badge-download {
  bottom:-20px;
}
.brand {
  min-height:48px;
}
.quick-nav a,.quick-nav button {
  width:48px;
}
@media(min-width:801px) and (max-width:1280px) {
  .wrap {
    width:calc(100% - 120px);
  }
}
@media(max-width:800px) {
  .hero h1 {
    font-size:clamp(30px,8.5vw,40px);
  }
  .hero-actions .btn {
    padding-inline:16px;
  }
}
@media(max-width:374px) {
  .header-inner {
    gap:8px;
  }
  .brand img {
    width:116px;
  }
  .header-cta {
    padding:10px;
    font-size:13px;
    gap:6px;
  }
  .header-cta .icon {
    width:18px;
    height:18px;
  }
  .menu-toggle {
    flex-shrink:0;
  }
}
.header-inner .brand span {
  position: static;
  visibility: visible;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand span b {
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

.brand span small {
  font-size: 11px;
  white-space: nowrap;
}

.estimate-check {
  grid-column: 1 / -1;
}

.report-picker-actions,
.support-actions {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.report-picker > p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

/* 平板和手机使用折叠菜单，保留中文品牌名称。 */
@media (max-width: 1100px) {
  .brand img {
    width: 136px;
  }

  .brand {
    gap: 12px;
  }

  .brand span {
    padding-left: 12px;
  }

  .main-nav {
    gap: 12px;
  }

  .main-nav a {
    font-size: 13px;
  }
}

@media (max-width: 950px) {
  .main-nav {
    position: absolute;
    visibility: hidden;
    pointer-events: none;
  }

  .header-cta {
    margin-left: auto;
  }

  .menu-toggle {
    position: static;
    visibility: visible;
    pointer-events: auto;
    display: grid;
    place-content: center;
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    border: 0;
    background: transparent;
    color: var(--ink);
  }
}

@media (min-width: 801px) and (max-width: 950px) {
  .mobile-menu {
    top: 88px;
  }
}

@media (max-width: 800px) {
  .header-cta {
    position: absolute;
    visibility: hidden;
    pointer-events: none;
  }

  .menu-toggle {
    margin-left: auto;
  }

  .hero h1 {
    max-width: 19ch;
  }

  .report-picker-actions .btn,
  .support-actions .btn {
    white-space: normal;
    line-height: 1.6;
  }
}

@media (max-width: 374px) {
  .brand img {
    width: 108px;
  }

  .brand span b {
    font-size: 13px;
  }
}