/* 多页面共用白灰底色与系统蓝，用留白连接品牌叙事和交互示例。 */
.primary-nav {
  gap: 21px;
  white-space: nowrap;
  font-size: 13px;
}
.primary-nav a[aria-current="page"] {
  color: var(--accent-dark);
  font-weight: 650;
}
.primary-nav a[aria-current="page"]::after {
  content: "";
  display: block;
  width: 13px;
  height: 2px;
  margin: 4px auto -6px;
  border-radius: 3px;
  background: var(--accent);
}
.subhero {
  padding: 54px 0 82px;
  border-bottom: 1px solid var(--line);
  background: radial-gradient(ellipse at 90% 100%, #e1e1e588, transparent 58%);
}
.breadcrumb {
  display: flex;
  gap: 13px;
  align-items: center;
  color: #707178;
  font-size: 13px;
  margin-bottom: 65px;
}
.breadcrumb a:hover {
  color: var(--accent);
}
.subhero .eyebrow {
  font-size: 12px;
}
.subhero h1 {
  margin-top: 22px;
  font-size: clamp(38px, 4.65vw, 66px);
  line-height: 1.26;
  letter-spacing: -0.045em;
  font-weight: 650;
}
.subhero .lead {
  margin-top: 27px;
  max-width: 760px;
}
.lead {
  color: #6c6d74;
  font-size: 17px;
  line-height: 1.95;
}
.subhero-actions {
  justify-content: flex-start;
  margin-top: 30px;
  gap: 25px;
}
.subhero-actions .button:not(.button-primary) {
  border-color: #cfcfd1;
}
.content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 42px;
}
.content-card {
  min-width: 0;
  padding: 30px;
  border: 1px solid #dedee2;
  border-radius: 24px;
  background: #ffffffa3;
}
.card-index,
.sample-kicker {
  display: block;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.05em;
}
.content-card h3 {
  font-size: 21px;
  line-height: 1.5;
  letter-spacing: -0.025em;
  margin: 14px 0 13px;
}
.content-card > p,
.content-card .detail-list {
  color: #6a6a71;
  font-size: 14px;
  line-height: 1.95;
}
.content-card .text-link {
  display: inline-flex;
  margin-top: 20px;
}
.card-illustration {
  height: 128px;
  border-radius: 15px;
  background: linear-gradient(145deg, #ebebee, #e6e6e8);
  color: #606066;
  display: grid;
  place-items: center;
  margin: 20px 0 24px;
}
.card-illustration svg {
  width: 218px;
  height: 100px;
  max-width: 100%;
}
.content-card:nth-child(3n + 2) .card-illustration {
  background: linear-gradient(145deg, #ececee, #e1e1e4);
  color: #6b6b72;
}
.content-card:nth-child(3n + 3) .card-illustration {
  background: linear-gradient(145deg, #eaf0f2, #e3e9ed);
  color: #6a7e8a;
}
.detail-list {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}
.detail-list li {
  position: relative;
  padding-left: 17px;
  margin: 9px 0;
}
.detail-list li::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #7c7d84;
  position: absolute;
  top: 0.85em;
  left: 0;
}
.detail-list b {
  color: #404044;
  font-weight: 600;
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 22px;
}
.tag-list span {
  border: 1px solid #dddde1;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: #616268;
}
.callout-note {
  margin-top: 28px;
  padding: 20px 24px;
  border-left: 2px solid #b1b2b6;
  border-radius: 0 12px 12px 0;
  background: #e6e6e96b;
  color: #64646a;
  font-size: 13px;
  line-height: 1.95;
}
.callout-note .eyebrow {
  margin-bottom: 16px;
}
.callout-note h2 {
  color: var(--ink);
  font-size: 32px;
  line-height: 1.5;
  margin-bottom: 22px;
}
.callout-note p + p {
  margin-top: 14px;
}
.callout-note .actions {
  margin-top: 25px;
  justify-content: flex-start;
}
.subhero .callout-note {
  max-width: 900px;
  margin-top: 38px;
}
.split-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 30px;
}
.table-scroll {
  margin-top: 40px;
  border: 1px solid #dadadd;
  border-radius: 20px;
  overflow-x: auto;
  background: #ffffff9c;
}
.comparison-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.85;
  text-align: left;
}
.comparison-table caption {
  text-align: left;
  padding: 20px 25px;
  font-size: 13px;
  color: #6a6a71;
  border-bottom: 1px solid #dadadd;
}
.comparison-table th,
.comparison-table td {
  padding: 20px 25px;
  border-bottom: 1px solid #e2e2e5;
  vertical-align: top;
}
.comparison-table thead {
  background: #e7e7ea;
  color: #4b4c51;
}
.comparison-table th {
  font-weight: 600;
}
.comparison-table td {
  color: #696a71;
}
.comparison-table tbody tr:last-child > * {
  border-bottom: 0;
}
.comparison-table tbody th {
  width: 21%;
}
.scenario-block {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 64px;
  align-items: center;
}
.scenario-copy h2 {
  font-size: clamp(32px, 3.1vw, 44px);
  line-height: 1.4;
  letter-spacing: -0.04em;
  margin: 20px 0 25px;
}
.scenario-copy .lead {
  font-size: 15px;
}
.scenario-copy .detail-list {
  font-size: 14px;
  color: #6a6a71;
}
.scenario-copy .text-link {
  display: inline-flex;
  margin-top: 25px;
}
.scenario-board {
  min-width: 0;
  background: #fff;
  border: 1px solid #dfdfe3;
  border-radius: 27px;
  padding: 30px;
  box-shadow: 0 20px 50px #33333608;
}
.scenario-board > .sample-kicker {
  padding-bottom: 20px;
  border-bottom: 1px solid #e5e5e7;
}
.sample-heading {
  margin-top: 25px;
}
.sample-heading h3 {
  font-size: 25px;
  letter-spacing: -0.025em;
  margin: 15px 0 10px;
}
.sample-heading p {
  color: #787980;
  font-size: 13px;
}
.sample-list,
.timeline {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
}
.sample-list > li {
  display: grid;
  grid-template-columns: 65px minmax(0, 1fr);
  gap: 10px 12px;
  align-items: start;
  padding: 20px 0;
  border-top: 1px solid #ebebed;
}
.sample-list > li > .pill {
  grid-column: 2;
  justify-self: start;
  font-size: 11px;
}
.sample-list b,
.timeline b {
  font-weight: 600;
  font-size: 15px;
}
.sample-list p,
.timeline p {
  font-size: 13px;
  color: #75767d;
  margin-top: 6px;
}
.sample-list .card-index {
  padding-top: 3px;
}
.scenario-board .callout-note {
  margin-top: 18px;
  padding: 14px 17px;
  font-size: 12px;
}
.timeline-step {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid #e0e0e3;
}
.timeline-step .card-index {
  padding-top: 3px;
}
.timeline-step .pill {
  margin-top: 12px;
  display: inline-flex;
}
.content-card .timeline-step {
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 10px;
}
.guide-layout {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: 65px;
  margin-top: 46px;
  align-items: start;
}
.guide-nav {
  position: sticky;
  top: 110px;
  border-left: 1px solid #d5d5da;
  padding: 7px 0 7px 20px;
  display: grid;
  gap: 7px;
}
.guide-nav a {
  color: #73737a;
  padding: 7px 0;
  font-size: 14px;
}
.guide-nav a:hover {
  color: var(--accent);
}
.guide-content {
  min-width: 0;
}
.guide-step {
  display: grid;
  grid-template-columns: 45px minmax(0, 1fr);
  gap: 22px;
  padding-bottom: 38px;
  margin-bottom: 38px;
  border-bottom: 1px solid #dcdce0;
  scroll-margin-top: 105px;
}
.guide-step:last-child {
  margin-bottom: 0;
}
.guide-step-number {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid #ceced0;
  border-radius: 50%;
  color: #5f6066;
  font-size: 13px;
}
.guide-step h3 {
  font-size: 23px;
  line-height: 1.6;
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: 14px;
}
.guide-step p,
.guide-step .detail-list {
  color: #696a71;
  font-size: 14px;
  line-height: 2;
}
.guide-step p + p {
  margin-top: 14px;
}
.guide-step .text-link {
  display: inline-flex;
  margin-top: 19px;
}
.guide-example {
  background: white;
  border: 1px solid #dddde0;
  border-radius: 18px;
  padding: 24px;
  margin-top: 24px;
  color: #525358;
  font-size: 14px;
}
.guide-example h4 {
  margin: 0 0 14px;
  font-size: 16px;
}
.guide-example ul,
.guide-example ol {
  padding-left: 20px;
  margin: 13px 0;
}
.guide-example li {
  padding: 5px 0;
}
.guide-example > span {
  display: block;
}
.manifesto {
  scroll-margin-top: 100px;
  max-width: 920px;
}
.manifesto h2 {
  font-size: clamp(31px, 3.4vw, 48px);
  letter-spacing: -0.04em;
  line-height: 1.5;
  margin: 22px 0 30px;
}
.manifesto > p:not(.eyebrow) {
  max-width: 730px;
  color: #6d6e75;
  font-size: 16px;
  line-height: 2.1;
  margin-top: 18px;
}
.principles-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 42px;
}
.service-layout {
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 70px;
}
.service-layout > div:first-child h2 {
  font-size: clamp(32px, 3.3vw, 46px);
  line-height: 1.4;
  letter-spacing: -0.035em;
  margin: 20px 0 25px;
  font-weight: 600;
}
.service-layout .lead {
  font-size: 15px;
  line-height: 1.95;
}
@media (max-width: 900px) {
  .service-layout {
    grid-template-columns: 1fr;
    gap: 35px;
  }
}
.principle-card {
  padding: 35px;
  border-top: 1px solid #c9c9cb;
}
.principle-card h3 {
  font-size: 24px;
  margin: 20px 0 15px;
}
.principle-card p {
  font-size: 15px;
  color: #707077;
  line-height: 1.95;
  max-width: 440px;
}
.page-cta {
  text-align: center;
  padding: 70px 45px;
  border-radius: 30px;
  background: #e5e5e8;
}
section.page-cta {
  border-radius: 0;
}
.page-cta h2 {
  font-size: clamp(32px, 3.4vw, 48px);
  line-height: 1.4;
  letter-spacing: -0.04em;
  margin: 20px 0 22px;
}
.page-cta p:not(.eyebrow) {
  color: #68696f;
  font-size: 15px;
  line-height: 1.95;
}
.page-cta .actions {
  margin-top: 30px;
}
.site-explore {
  border-top: 1px solid var(--line);
}
.explore-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
}
.explore-heading h2 {
  font-size: clamp(32px, 3.4vw, 47px);
  line-height: 1.4;
  letter-spacing: -0.04em;
  margin-top: 16px;
}
.explore-heading > .text-link {
  margin-bottom: 8px;
  flex-shrink: 0;
}
.preview-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 42px;
}
.preview-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: white;
  border: 1px solid #dddde1;
  border-radius: 24px;
  overflow: hidden;
  transition:
    transform 0.25s,
    box-shadow 0.25s;
}
.preview-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px #28282b0b;
}
.preview-art {
  height: 240px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 27px;
}
.preview-art > span {
  font-size: 11px;
  letter-spacing: 0.12em;
  position: relative;
  z-index: 1;
}
.preview-art strong {
  font-size: 29px;
  line-height: 1.4;
  letter-spacing: -0.035em;
  font-weight: 550;
  position: relative;
  z-index: 1;
}
.art-course {
  background: #dadadd;
  color: #46474b;
}
.art-course > i {
  width: 170px;
  height: 170px;
  border: 1px solid #797a8255;
  border-radius: 50%;
  position: absolute;
  right: -30px;
  bottom: -60px;
}
.art-course > i::before {
  content: "";
  position: absolute;
  inset: 17px;
  border: 1px solid #797a8255;
  border-radius: 50%;
}
.art-practice {
  background: #e5e5e8;
  color: #57585d;
}
.art-answers {
  display: flex;
  gap: 9px;
  transform: rotate(-6deg);
}
.art-answers b {
  background: #ffffffb8;
  border: 1px solid #c5c6c9;
  width: 45px;
  height: 38px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 13px;
}
.art-answers b:nth-child(2) {
  background: #5c5c62;
  color: white;
}
.art-scenario {
  background: #dedee2;
  color: #636369;
}
.art-stack {
  position: absolute;
  width: 115px;
  height: 90px;
  right: -7px;
  bottom: -15px;
  transform: rotate(-14deg);
}
.art-stack i {
  position: absolute;
  inset: 0;
  border: 1px solid #a1a1a5;
  background: #eeeeefa6;
  border-radius: 11px;
}
.art-stack i:nth-child(2) {
  transform: translate(-14px, -14px);
}
.art-stack i:nth-child(3) {
  transform: translate(-28px, -28px);
}
.preview-card-copy {
  padding: 27px;
  flex: 1;
}
.preview-card-copy h3 {
  font-size: 20px;
  margin-bottom: 10px;
}
.preview-card-copy p {
  font-size: 14px;
  color: #727279;
  line-height: 1.9;
}
.preview-card-copy > span {
  display: block;
  font-size: 13px;
  color: var(--accent);
  margin-top: 25px;
}
.explore-note {
  font-size: 12px;
  color: #787981;
  margin-top: 20px;
}
.experience-hero h1 span {
  color: #75757c;
}
.demo-notice {
  display: flex;
  align-items: start;
  gap: 12px;
  max-width: 800px;
  border: 1px solid #d3d3d7;
  border-radius: 12px;
  padding: 16px 20px;
  margin-top: 32px;
  background: #f3f3f5a6;
}
.demo-notice .status-dot {
  flex: 0 0 6px;
  width: 6px;
  height: 6px;
  margin-top: 9px;
  background: #6a6a71;
  border-radius: 50%;
}
.demo-notice p {
  font-size: 13px;
  line-height: 1.9;
  color: #66676d;
}
.demo-notice b {
  color: #4a4b50;
  font-weight: 600;
}
.demo-section {
  padding: 60px 0 0;
}
.demo-workspace {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  border: 1px solid #d8d8dd;
  border-radius: 24px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 20px 60px #32323508;
  min-height: 790px;
}
.demo-rail {
  display: flex;
  flex-direction: column;
  background: #ededef;
  padding: 26px 20px;
  border-right: 1px solid #dddde1;
}
.demo-space-brand {
  display: flex;
  gap: 9px;
  align-items: center;
}
.demo-space-brand img {
  border-radius: 10px;
  flex-shrink: 0;
}
.demo-space-brand b {
  font-size: 14px;
  font-weight: 650;
  display: block;
}
.demo-space-brand small {
  font-size: 11px;
  color: #787981;
  display: block;
  margin-top: 2px;
}
.demo-rail-label {
  font-size: 12px;
  color: #75767d;
  margin-top: 40px;
  padding: 0 9px;
}
.demo-view-nav {
  display: grid;
  gap: 9px;
  margin-top: 16px;
}
.demo-view-nav a {
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 13px;
  font-size: 14px;
  color: #6c6c73;
  border-radius: 10px;
  transition: background 0.2s;
}
.demo-view-nav a span {
  font-size: 11px;
  opacity: 0.65;
}
.demo-view-nav a:hover {
  background: #e4e4e6;
}
.demo-view-nav a[aria-current="true"] {
  color: #424246;
  background: #dddde1;
  font-weight: 600;
}
.demo-rail-footer {
  margin-top: auto;
  padding: 30px 9px 0;
  color: #787981;
  font-size: 12px;
}
.demo-rail-footer small {
  display: block;
  font-size: 11px;
  margin-top: 5px;
}
.demo-content {
  padding: 38px 32px;
  min-width: 0;
}
.demo-content > section {
  scroll-margin-top: 100px;
}
.demo-section-head {
  display: flex;
  align-items: end;
  gap: 20px;
  justify-content: space-between;
}
.demo-section-head h2 {
  font-size: 29px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.035em;
  margin-top: 12px;
}
.demo-section-head p {
  font-size: 13px;
  color: #77787f;
  margin-top: 8px;
}
.demo-count {
  white-space: nowrap;
  font-size: 12px;
  color: #787980;
  padding-bottom: 3px;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 15px;
  border: 1px solid #dadadd;
  border-radius: 11px;
  background: #f9f9fa;
  margin-top: 28px;
}
.search-box > span {
  color: #7a7b83;
  font-size: 24px;
  line-height: 1;
}
.search-box input {
  flex: 1;
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  color: #4d4d52;
  font-size: 13px;
  padding: 2px 0;
  outline: none;
}
.search-box:focus-within {
  outline: 2px solid #6a6b72;
  outline-offset: 2px;
}
.search-box input::placeholder {
  color: #83848b;
}
.course-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 18px 0 24px;
}
.course-filters button {
  background: none;
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 12px;
  color: #777880;
}
.course-filters button:hover {
  background: #efeff0;
}
.course-filters button[aria-pressed="true"] {
  background: #e8e8ea;
  color: #4f4f54;
  font-weight: 600;
}
.demo-course-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.demo-course-card {
  border: 1px solid #e0e0e3;
  border-radius: 17px;
  overflow: hidden;
  min-width: 0;
  transition: box-shadow 0.25s;
}
.demo-course-card:hover {
  box-shadow: 0 12px 25px #3131340c;
}
.demo-course-art {
  height: 175px;
  padding: 22px;
  position: relative;
  overflow: hidden;
  color: #4f5055;
  background: #d6d6da;
}
.demo-course-art > span {
  font-size: 10px;
  letter-spacing: 0.13em;
  display: block;
  position: relative;
  z-index: 1;
}
.demo-course-art strong {
  font-size: 23px;
  line-height: 1.55;
  display: block;
  margin-top: 22px;
  letter-spacing: -0.02em;
  font-weight: 550;
  position: relative;
  z-index: 1;
}
.demo-course-art i {
  font-style: normal;
  position: absolute;
  font-size: 150px;
  line-height: 1;
  right: -10px;
  bottom: -25px;
  opacity: 0.13;
}
.art-paper {
  background: #dcdcdf;
  color: #68696f;
}
.art-blue {
  background: #dfe7ea;
  color: #587582;
}
.art-rose {
  background: #eddcda;
  color: #98695e;
}
.art-sage {
  background: #dfdfe2;
  color: #696a70;
}
.art-charcoal {
  background: #515257;
  color: #ebebed;
}
.demo-course-body {
  padding: 20px;
}
.demo-course-body > span {
  color: #7b7c84;
  font-size: 11px;
}
.demo-course-body h3 {
  font-size: 17px;
  line-height: 1.6;
  margin-top: 9px;
  letter-spacing: -0.025em;
}
.demo-course-body p {
  color: #787980;
  font-size: 12px;
  line-height: 1.8;
  margin-top: 8px;
  min-height: 43px;
}
.demo-course-body .text-link {
  display: inline-flex;
  font-size: 12px;
  margin-top: 18px;
}
.demo-empty {
  text-align: center;
  padding: 70px 20px;
  border: 1px dashed #c9c9cc;
  border-radius: 15px;
}
.demo-empty h3 {
  font-size: 22px;
  font-weight: 550;
}
.demo-empty p {
  font-size: 13px;
  color: #797a81;
  margin: 18px 0 25px;
}
.button-outline {
  border: 1px solid #cbcbce;
  background: none;
  color: #4f4f54;
}
.demo-bottom-note {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 19px;
  color: #7b7c83;
  font-size: 12px;
}
.demo-bottom-note a {
  color: #5b5c62;
  flex-shrink: 0;
}
.quiz-card {
  border: 1px solid #dddde1;
  border-radius: 18px;
  padding: 28px;
  margin-top: 30px;
}
.quiz-meta {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  font-size: 12px;
  color: #76777f;
}
.quiz-progress-track {
  margin: 17px 0 30px;
  height: 3px;
  background: #e8e8eb;
  border-radius: 2px;
  overflow: hidden;
}
.quiz-progress-track span {
  display: block;
  height: 100%;
  background: #66666c;
  width: 0;
  transition: width 0.3s;
}
#quiz-question {
  font-size: 22px;
  font-weight: 550;
  line-height: 1.65;
}
.quiz-options {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}
.quiz-options button {
  display: flex;
  align-items: center;
  gap: 15px;
  background: #f9f9fa;
  border: 1px solid #dddde1;
  border-radius: 10px;
  padding: 16px;
  text-align: left;
  font-size: 14px;
  line-height: 1.8;
}
.quiz-options button > span {
  flex: 0 0 29px;
  height: 29px;
  background: #eeeeef;
  border-radius: 7px;
  display: grid;
  place-items: center;
  font-size: 12px;
  color: #717279;
}
.quiz-options button[aria-pressed="true"] {
  background: #ececee;
  border-color: #909196;
}
.quiz-options button.is-correct {
  border-color: #67686e;
  background: #e7e7e9;
}
.quiz-options button:disabled {
  opacity: 1;
}
.quiz-feedback {
  font-size: 14px;
  line-height: 1.95;
  background: #eeeef0;
  color: #5c5c62;
  padding: 20px;
  border-radius: 12px;
  margin-top: 23px;
}
.quiz-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.quiz-actions > span {
  color: #7f8088;
  font-size: 12px;
}
.quiz-actions .button:disabled {
  background: #ceced0;
  color: #66666c;
  box-shadow: none;
}
.quiz-summary {
  text-align: center;
  padding: 25px 0;
}
.quiz-result-mark {
  background: #e4e4e7;
  color: #626268;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  margin: auto;
  font-size: 25px;
  border-radius: 50%;
}
.quiz-summary h3 {
  font-size: 30px;
  line-height: 1.5;
  letter-spacing: -0.035em;
  margin: 23px 0 18px;
  font-weight: 550;
}
.quiz-summary > p {
  color: #696a71;
  font-size: 14px;
}
.quiz-summary ul {
  padding: 0;
  list-style: none;
  text-align: left;
  font-size: 13px;
  color: #67686f;
  margin: 30px 0;
}
.quiz-summary li {
  border-top: 1px solid #e1e1e4;
  padding: 13px 0;
}
.demo-tip {
  margin-top: 30px;
  padding: 22px 25px;
  border-left: 2px solid #b1b2b6;
  background: #f3f3f4;
}
.demo-tip > b {
  font-size: 14px;
  font-weight: 550;
}
.demo-tip p {
  font-size: 13px;
  color: #77787f;
  margin-top: 12px;
  line-height: 1.95;
}
.demo-tip .text-link {
  display: inline-flex;
  margin-top: 18px;
  font-size: 13px;
}
.demo-material-list {
  margin-top: 30px;
  display: grid;
  gap: 17px;
}
.demo-material-list details {
  border: 1px solid #dddde0;
  border-radius: 15px;
  overflow: hidden;
}
.demo-material-list summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 23px;
  cursor: pointer;
  list-style: none;
}
.demo-material-list summary::-webkit-details-marker {
  display: none;
}
.demo-material-list summary > span:last-child {
  margin-left: auto;
  font-size: 18px;
  color: #7c7d84;
}
.demo-material-list details[open] summary > span:last-child {
  transform: rotate(45deg);
}
.document-icon {
  flex: 0 0 43px;
  height: 48px;
  border-radius: 7px;
  background: #e4e4e6;
  color: #777880;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 600;
}
.doc-green {
  background: #e4e4e7;
  color: #72737a;
}
.doc-blue {
  background: #e1e9ee;
  color: #748fa0;
}
.demo-material-list summary b {
  font-size: 15px;
  font-weight: 550;
}
.demo-material-list summary small {
  display: block;
  color: #808189;
  font-size: 11px;
  margin-top: 5px;
}
.material-body {
  padding: 0 25px 25px 82px;
  color: #707178;
  font-size: 14px;
  line-height: 2;
}
.material-body ol,
.material-body ul {
  padding-left: 19px;
  margin: 15px 0 25px;
}
.material-body li {
  padding: 3px 0;
}
.material-body .text-link {
  font-size: 13px;
}
.small-note {
  font-size: 12px;
  color: #787980;
  line-height: 1.9;
  margin-top: 16px;
}
.folder-example {
  background: #f2f2f4;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
  font-size: 13px;
}
.folder-example span {
  display: block;
}
.access-demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 30px;
  align-items: start;
}
.access-form {
  border: 1px solid #dddde0;
  border-radius: 15px;
  padding: 25px;
}
.access-form > label {
  font-size: 14px;
  font-weight: 550;
  display: block;
  margin-bottom: 13px;
}
.access-form select {
  width: 100%;
  font: inherit;
  font-size: 14px;
  color: #606167;
  border: 1px solid #d6d6db;
  background: #f9f9fa;
  border-radius: 9px;
  padding: 12px;
}
.access-form fieldset {
  border: 0;
  padding: 0;
  margin: 28px 0 0;
}
.access-form legend {
  font-size: 13px;
  margin-bottom: 12px;
}
.access-form fieldset label {
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 7px 0;
  font-size: 14px;
  color: #72737a;
}
.access-form input {
  width: 16px;
  height: 16px;
  accent-color: #5f5f65;
}
.access-form .text-link {
  display: inline-flex;
  margin-top: 20px;
  font-size: 12px;
}
.access-preview {
  background: #eeeeef;
  padding: 27px;
  border-radius: 15px;
  min-width: 0;
}
.access-status {
  display: inline-block;
  border: 1px solid #b1b1b5;
  border-radius: 6px;
  padding: 4px 9px;
  font-size: 11px;
  color: #58595f;
  margin: 22px 0 17px;
}
.access-status[data-state="none"],
.access-status[data-state="expired"] {
  color: #6e6f76;
  border-color: #bcbcbf;
}
.access-preview h3 {
  font-size: 21px;
  font-weight: 550;
}
.access-preview > p {
  font-size: 13px;
  color: #75767d;
  margin-top: 14px;
}
.access-preview ul {
  padding: 0;
  list-style: none;
  margin: 22px 0;
}
.access-preview li {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  padding: 14px 0;
  border-top: 1px solid #dadadd;
  font-size: 13px;
  color: #7b7c83;
}
.access-preview li b {
  font-size: 12px;
  font-weight: 500;
  color: #8d8e93;
  white-space: nowrap;
}
.access-preview li.is-allowed b {
  color: #5d5e64;
}
.access-preview-footer {
  font-size: 11px;
  color: #7b7c83;
  line-height: 1.9;
  border-top: 1px solid #dadadd;
  padding-top: 20px;
}
.course-dialog {
  width: min(920px, calc(100% - 48px));
  max-height: calc(100dvh - 60px);
  padding: 0;
  border: 1px solid #dadade;
  border-radius: 24px;
  background: #f9f9fa;
  color: var(--ink);
  overflow-y: auto;
}
.course-dialog::backdrop {
  background: #25252866;
  backdrop-filter: blur(7px);
}
.course-dialog-top {
  padding: 38px 38px 26px;
  border-bottom: 1px solid #dedee2;
}
.course-dialog-top h2 {
  font-size: 27px;
  margin-top: 14px;
  font-weight: 600;
  letter-spacing: -0.025em;
  padding-right: 20px;
}
.course-dialog-top > p:last-child {
  color: #7a7b82;
  font-size: 12px;
  margin-top: 15px;
}
.course-dialog-layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
}
.lesson-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 25px 20px;
  background: #eeeeef;
  border-right: 1px solid #dcdce0;
}
.lesson-nav button {
  text-align: left;
  font-size: 13px;
  line-height: 1.8;
  padding: 13px;
  border-radius: 9px;
  color: #787980;
  background: transparent;
}
.lesson-nav button[aria-pressed="true"] {
  background: #dedee2;
  color: #545459;
}
.sample-lesson {
  min-width: 0;
  padding: 32px;
}
.sample-lesson h3 {
  font-size: 24px;
  font-weight: 550;
  margin: 16px 0 20px;
  letter-spacing: -0.02em;
}
.sample-lesson > p:not(.small-note) {
  font-size: 15px;
  line-height: 2.1;
  color: #6f6f76;
}
.sample-takeaway {
  border-left: 2px solid #a7a7ab;
  background: #ebebed;
  padding: 18px;
  margin: 25px 0;
}
.sample-takeaway > span {
  font-size: 12px;
  color: #65656b;
  font-weight: 600;
}
.sample-takeaway p {
  font-size: 14px;
  color: #717178;
  line-height: 1.95;
  margin-top: 9px;
}
.sample-lesson .button {
  font-size: 12px;
}
.sample-lesson .button:disabled {
  opacity: 0.65;
}
@media (max-width: 1100px) {
  .scenario-block {
    gap: 35px;
  }
  .content-card {
    padding: 25px;
  }
  .demo-workspace {
    grid-template-columns: 200px minmax(0, 1fr);
  }
  .demo-rail {
    padding-inline: 15px;
  }
  .demo-content {
    padding: 30px 25px;
  }
  .demo-count {
    display: none;
  }
  .demo-course-art {
    padding: 19px;
  }
  .demo-course-art strong {
    font-size: 22px;
  }
  .access-demo-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 1050px) {
  .site-header {
    height: 67px;
  }
  .admin-link {
    display: none;
  }
  .menu-toggle {
    width: 35px;
    height: 38px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 5px;
    background: none;
    margin-left: auto;
    order: 3;
    padding: 7px;
  }
  .menu-toggle span {
    display: block;
    width: 18px;
    height: 1px;
    background: #545459;
    transition: transform 0.2s;
  }
  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(3px) rotate(45deg);
  }
  .menu-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }
  .nav-actions {
    margin-left: auto;
  }
  .primary-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 66px;
    display: none;
    background: #f3f3f5fa;
    border-bottom: 1px solid #d9d9dd;
    padding: 18px 30px;
    flex-wrap: wrap;
    gap: 6px 20px;
    font-size: 14px;
    box-shadow: 0 15px 20px #30303408;
  }
  .primary-nav.is-open {
    display: flex;
  }
  .primary-nav a {
    padding: 8px 5px;
  }
  .primary-nav a[aria-current="page"]::after {
    display: none;
  }
}
@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .scenario-block {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .scenario-copy {
    max-width: 650px;
  }
  .scenario-board {
    padding: 30px;
  }
  .sample-list > li {
    grid-template-columns: 75px minmax(0, 1fr) auto;
    align-items: center;
  }
  .sample-list > li > .pill {
    grid-column: auto;
  }
  .guide-layout {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 30px;
  }
  .guide-nav {
    padding-left: 15px;
  }
  .guide-nav a {
    font-size: 12px;
  }
  .preview-cards {
    gap: 15px;
  }
  .preview-art {
    padding: 22px;
    height: 220px;
  }
  .preview-art strong {
    font-size: 23px;
  }
  .preview-card-copy {
    padding: 22px;
  }
  .preview-card-copy h3 {
    font-size: 18px;
  }
  .demo-workspace {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .demo-rail {
    padding: 20px 25px 0;
    border-right: 0;
    border-bottom: 1px solid #dcdce0;
  }
  .demo-rail-label,
  .demo-rail-footer {
    display: none;
  }
  .demo-view-nav {
    display: flex;
    gap: 5px;
    margin-top: 17px;
    padding-bottom: 16px;
    flex-wrap: wrap;
  }
  .demo-view-nav a {
    padding: 9px 12px;
    font-size: 13px;
  }
  .demo-course-grid {
    gap: 22px;
  }
  .demo-course-art {
    height: 190px;
    padding: 23px;
  }
  .demo-course-art strong {
    font-size: 25px;
  }
  .access-demo-grid {
    grid-template-columns: 1fr 1fr;
  }
  .course-dialog-layout {
    grid-template-columns: 220px minmax(0, 1fr);
  }
}
@media (max-width: 700px) {
  .site-header {
    height: 64px;
  }
  .primary-nav {
    top: 63px;
    padding: 15px 20px;
    gap: 5px 22px;
    font-size: 13px;
  }
  .subhero {
    padding: 32px 0 48px;
  }
  .breadcrumb {
    margin-bottom: 40px;
    font-size: 12px;
  }
  .subhero .eyebrow,
  .sample-kicker {
    font-size: 10px;
    letter-spacing: 0.08em;
  }
  .subhero h1 {
    font-size: clamp(30px, 7.7vw, 48px);
    margin-top: 18px;
    line-height: 1.4;
  }
  .subhero .lead {
    margin-top: 21px;
    font-size: 14px;
  }
  .subhero .lead br {
    display: none;
  }
  .subhero-actions {
    margin-top: 27px;
    gap: 15px 20px;
  }
  .subhero-actions .button {
    font-size: 12px;
    padding: 12px 19px;
  }
  .content-grid {
    grid-template-columns: 1fr;
    margin-top: 30px;
    gap: 17px;
  }
  .content-card {
    padding: 26px;
    border-radius: 20px;
  }
  .content-card h3 {
    font-size: 22px;
  }
  .card-illustration {
    height: 125px;
  }
  .callout-note {
    padding: 18px;
    font-size: 12px;
    margin-top: 23px;
  }
  .callout-note h2 {
    font-size: 28px;
  }
  .split-section {
    grid-template-columns: 1fr;
    gap: 17px;
  }
  .table-scroll {
    margin-top: 30px;
    border-radius: 15px;
  }
  .comparison-table {
    font-size: 13px;
  }
  .comparison-table th,
  .comparison-table td {
    padding: 17px 20px;
  }
  .scenario-copy h2 {
    font-size: 32px;
  }
  .scenario-board {
    padding: 23px;
    border-radius: 22px;
  }
  .sample-heading h3 {
    font-size: 23px;
  }
  .sample-list > li {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 10px;
  }
  .sample-list > li > .pill {
    grid-column: 2;
  }
  .timeline-step {
    grid-template-columns: 75px minmax(0, 1fr);
    gap: 12px;
  }
  .timeline p {
    font-size: 13px;
  }
  .guide-layout {
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 30px;
  }
  .guide-nav {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 6px 16px;
    padding: 15px 20px;
    border: 1px solid #dadadd;
    border-radius: 13px;
    background: #ebebed;
  }
  .guide-nav a {
    font-size: 12px;
  }
  .guide-step {
    grid-template-columns: 33px minmax(0, 1fr);
    gap: 14px;
    margin-bottom: 30px;
    padding-bottom: 30px;
  }
  .guide-step-number {
    width: 32px;
    height: 32px;
    font-size: 11px;
  }
  .guide-step h3 {
    font-size: 20px;
  }
  .guide-example {
    padding: 19px;
  }
  .manifesto > p:not(.eyebrow) {
    font-size: 15px;
  }
  .principles-grid {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-top: 30px;
  }
  .principle-card {
    padding: 27px 5px;
  }
  .principle-card h3 {
    font-size: 23px;
  }
  .page-cta {
    padding: 45px 24px;
    border-radius: 23px;
  }
  .page-cta h2 {
    font-size: 32px;
  }
  .page-cta p:not(.eyebrow) {
    font-size: 14px;
  }
  .page-cta .actions {
    gap: 20px;
  }
  .explore-heading {
    display: block;
  }
  .explore-heading h2 {
    font-size: 31px;
  }
  .explore-heading > .text-link {
    display: inline-flex;
    margin-top: 24px;
  }
  .preview-cards {
    grid-template-columns: 1fr;
    margin-top: 30px;
    gap: 23px;
  }
  .preview-art {
    height: 215px;
    padding: 28px;
  }
  .preview-art strong {
    font-size: 30px;
  }
  .preview-card-copy {
    padding: 25px 28px;
  }
  .preview-card-copy h3 {
    font-size: 21px;
  }
  .demo-notice {
    padding: 16px;
    gap: 10px;
    margin-top: 27px;
  }
  .demo-notice p {
    font-size: 12px;
  }
  .demo-section {
    padding-top: 32px;
  }
  .demo-workspace {
    border-radius: 19px;
  }
  .demo-rail {
    padding: 20px 18px 0;
  }
  .demo-view-nav {
    gap: 6px;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  .demo-view-nav a {
    padding: 9px 11px;
    font-size: 12px;
    gap: 9px;
  }
  .demo-view-nav a span {
    font-size: 10px;
  }
  .demo-content {
    padding: 27px 18px;
  }
  .demo-section-head h2 {
    font-size: 26px;
  }
  .demo-section-head p {
    font-size: 12px;
  }
  .demo-course-grid {
    grid-template-columns: 1fr;
    gap: 21px;
  }
  .demo-course-art {
    height: 185px;
    padding: 24px;
  }
  .demo-course-art strong {
    font-size: 26px;
  }
  .demo-course-body {
    padding: 23px;
  }
  .demo-course-body h3 {
    font-size: 19px;
  }
  .demo-course-body p {
    min-height: 0;
  }
  .course-filters {
    gap: 4px;
  }
  .course-filters button {
    padding: 7px 10px;
    font-size: 11px;
  }
  .search-box {
    padding: 10px 12px;
  }
  .search-box input {
    font-size: 12px;
  }
  .demo-bottom-note {
    display: block;
    font-size: 12px;
  }
  .demo-bottom-note a {
    display: inline-block;
    margin-top: 12px;
  }
  .quiz-card {
    padding: 22px 17px;
  }
  .quiz-meta {
    font-size: 11px;
  }
  #quiz-question {
    font-size: 20px;
  }
  .quiz-options button {
    padding: 14px 11px;
    gap: 10px;
    font-size: 13px;
  }
  .quiz-options button > span {
    flex-basis: 25px;
    height: 25px;
  }
  .quiz-feedback {
    padding: 16px;
    font-size: 13px;
  }
  .quiz-summary h3 {
    font-size: 27px;
  }
  .quiz-summary > p {
    font-size: 13px;
  }
  .demo-tip {
    padding: 20px;
  }
  .demo-material-list summary {
    padding: 18px 14px;
    gap: 11px;
  }
  .demo-material-list summary b {
    font-size: 14px;
  }
  .document-icon {
    flex-basis: 34px;
    height: 42px;
    font-size: 10px;
  }
  .material-body {
    padding: 0 18px 22px;
    font-size: 13px;
  }
  .access-demo-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .access-form,
  .access-preview {
    padding: 23px;
  }
  .course-dialog {
    width: calc(100% - 26px);
    max-height: calc(100dvh - 30px);
    border-radius: 18px;
  }
  .course-dialog-top {
    padding: 29px 22px 22px;
  }
  .course-dialog-top h2 {
    font-size: 23px;
    padding-right: 8px;
  }
  .course-dialog-layout {
    grid-template-columns: 1fr;
  }
  .lesson-nav {
    padding: 17px;
    gap: 4px;
    border-right: 0;
    border-bottom: 1px solid #dcdce0;
  }
  .lesson-nav button {
    padding: 9px 11px;
    font-size: 12px;
  }
  .sample-lesson {
    padding: 25px 22px;
  }
  .sample-lesson h3 {
    font-size: 23px;
  }
  .sample-lesson > p:not(.small-note) {
    font-size: 14px;
  }
}
.platform-overview {
  background: #fff;
}
.overview-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 50px;
}
.overview-heading h2,
.gallery-heading h2 {
  font-size: clamp(34px, 3.6vw, 50px);
  font-weight: 650;
  line-height: 1.3;
  letter-spacing: -0.045em;
  margin-top: 20px;
}
.overview-heading > p {
  font-size: 15px;
  color: #6e6e73;
  line-height: 1.9;
  padding-bottom: 5px;
}
.overview-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
  margin-top: 58px;
}
.overview-metrics > a {
  display: block;
  min-width: 0;
  border-top: 1px solid #d2d2d7;
  padding-top: 28px;
}
.overview-metrics > a > div {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.overview-metrics strong {
  font-size: 66px;
  font-weight: 600;
  line-height: 1;
  color: #0071e3;
  letter-spacing: -0.045em;
}
.overview-metrics > a > div > span {
  font-size: 19px;
  font-weight: 600;
}
.overview-metrics p {
  font-size: 13px;
  color: #6e6e73;
  margin-top: 14px;
  line-height: 1.9;
  max-width: 220px;
  min-height: 50px;
}
.metric-link {
  color: #0066cc;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 13px;
  margin-top: 25px;
}
.metric-link > span {
  transition: transform 0.2s;
}
.overview-metrics a:hover .metric-link > span {
  transform: translate(2px, -2px);
}
.overview-note {
  color: #86868b;
  font-size: 12px;
  margin-top: 30px;
}
.space-gallery {
  background: #f5f5f7;
}
.gallery-heading {
  text-align: center;
}
.gallery-heading h2 > span {
  color: #86868b;
}
.gallery-heading > p:last-child {
  color: #6e6e73;
  margin-top: 22px;
  font-size: 16px;
}
.space-gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 46px;
}
.space-card {
  min-width: 0;
  background: #fff;
  border-radius: 25px;
  overflow: hidden;
  padding-bottom: 28px;
  transition:
    transform 0.25s,
    box-shadow 0.25s;
}
.space-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 18px 40px #00000008;
}
.space-card-art {
  height: 220px;
  position: relative;
  background: linear-gradient(140deg, #e5effc, #bdd5f4);
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}
.space-card-art > span {
  position: absolute;
  bottom: 20px;
  left: 25px;
  color: #5b7da8;
  font-size: 10px;
  letter-spacing: 0.14em;
}
.space-study .space-card-art {
  background: linear-gradient(140deg, #eeeaf9, #d1cce9);
}
.space-digital .space-card-art {
  background: linear-gradient(140deg, #f5e9df, #ecd0b9);
}
.space-study .space-card-art > span {
  color: #81779f;
}
.space-digital .space-card-art > span {
  color: #a18267;
}
.camera-shape {
  width: 140px;
  height: 95px;
  border-radius: 24px;
  border: 1px solid #ffffffc4;
  background: linear-gradient(160deg, #ffffffa6, #c8d8ef9c);
  box-shadow: 12px 18px 25px #577cad20;
  display: grid;
  place-items: center;
  transform: rotate(-10deg);
  position: relative;
  margin-bottom: 10px;
}
.camera-shape::before {
  content: "";
  position: absolute;
  width: 42px;
  height: 16px;
  border-radius: 9px 9px 0 0;
  top: -12px;
  left: 23px;
  background: #e6f0ff;
  border: 1px solid #ffffff;
}
.camera-shape::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #9ab7db;
  position: absolute;
  top: 15px;
  right: 18px;
}
.camera-shape > i {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 9px solid #f4f8ff;
  box-shadow: 0 2px 10px #537aaa20;
  background: linear-gradient(140deg, #b1c6e7, #6e96c6);
}
.study-shape {
  display: flex;
  gap: 12px;
  transform: rotate(-9deg);
  margin-bottom: 18px;
}
.study-shape i {
  font-size: 24px;
  font-style: normal;
  color: #8c83ae;
  width: 61px;
  height: 75px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: #f9f7ffb8;
  border: 1px solid #ffffffa6;
  box-shadow: 8px 12px 20px #8176a718;
}
.study-shape i:nth-child(2) {
  background: linear-gradient(145deg, #9d93c8, #8274b4);
  color: white;
  transform: translateY(-12px);
}
.folder-shape {
  width: 133px;
  height: 88px;
  border-radius: 15px;
  border: 1px solid #ffffffa8;
  background: linear-gradient(150deg, #fff9f1d9, #f3dfc9bd);
  transform: rotate(-10deg);
  box-shadow: 9px 16px 25px #ac835e20;
  display: grid;
  align-content: center;
  gap: 8px;
  padding: 23px;
  margin-bottom: 12px;
  position: relative;
}
.folder-shape::before {
  content: "";
  position: absolute;
  top: -12px;
  left: 0;
  width: 58px;
  height: 17px;
  background: #f9ecdd;
  border-radius: 11px 11px 0 0;
}
.folder-shape i {
  height: 3px;
  width: 65px;
  background: #c5a485;
  border-radius: 2px;
}
.folder-shape i:last-child {
  width: 40px;
}
.space-card-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 25px 26px 0;
}
.space-icon {
  display: grid;
  place-items: center;
  width: 43px;
  height: 43px;
  background: #e8f1ff;
  color: #5582bd;
  border-radius: 13px;
  font-size: 17px;
  font-weight: 550;
}
.space-study .space-icon {
  color: #8c7cb5;
  background: #f0ecf8;
}
.space-digital .space-icon {
  color: #b08964;
  background: #f7efe6;
}
.space-type {
  font-size: 11px;
  color: #86868b;
}
.space-card-info h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.025em;
}
.space-arrow {
  margin-left: auto;
  font-size: 20px;
  color: #86868b;
}
.space-card > p {
  font-size: 14px;
  line-height: 1.9;
  color: #6e6e73;
  padding: 0 26px;
  margin-top: 20px;
}
.space-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 21px 26px 0;
}
.space-card-tags span {
  font-size: 11px;
  color: #86868b;
  padding: 3px 8px;
  border-radius: 5px;
  background: #f5f5f7;
}
.space-gallery-foot {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  margin-top: 24px;
  align-items: center;
}
.space-gallery-foot p {
  font-size: 12px;
  color: #86868b;
}
.space-gallery-foot .text-link {
  flex-shrink: 0;
  font-size: 13px;
}
@media (max-width: 900px) {
  .overview-metrics {
    gap: 25px;
  }
  .space-gallery-grid {
    gap: 16px;
  }
  .space-card-info {
    padding-inline: 20px;
  }
  .space-card > p {
    padding-inline: 20px;
  }
  .space-card-tags {
    margin-inline: 20px;
  }
  .space-card-art {
    height: 200px;
  }
  .study-shape {
    gap: 8px;
  }
  .study-shape i {
    width: 48px;
  }
}
@media (max-width: 700px) {
  .overview-heading {
    display: block;
  }
  .overview-heading h2,
  .gallery-heading h2 {
    font-size: 32px;
  }
  .overview-heading > p {
    margin-top: 24px;
    font-size: 14px;
  }
  .overview-metrics {
    grid-template-columns: 1fr 1fr;
    gap: 33px 24px;
    margin-top: 35px;
  }
  .overview-metrics strong {
    font-size: 54px;
  }
  .overview-metrics > a > div > span {
    font-size: 16px;
  }
  .overview-metrics p {
    font-size: 12px;
    min-height: 69px;
  }
  .metric-link {
    font-size: 12px;
    gap: 8px;
    margin-top: 17px;
  }
  .overview-note {
    font-size: 12px;
    margin-top: 25px;
  }
  .gallery-heading {
    text-align: left;
  }
  .gallery-heading > p:last-child {
    font-size: 14px;
  }
  .space-gallery-grid {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 32px;
  }
  .space-card-art {
    height: 220px;
  }
  .space-card-info {
    padding: 25px 25px 0;
  }
  .space-card > p {
    padding-inline: 25px;
  }
  .space-card-tags {
    margin-inline: 25px;
  }
  .space-gallery-foot {
    display: block;
  }
  .space-gallery-foot .text-link {
    display: inline-flex;
    margin-top: 19px;
  }
}
/* 关键产品区域使用清晰的白、浅灰与系统蓝；辅助内容保持中性色。 */
body {
  background: #fff;
}
.site-header {
  background: #ffffffd9;
  border-bottom-color: #e8e8ed;
}
.hero {
  background: linear-gradient(180deg, #fff 0%, #fff 44%, #f5f5f7 100%);
}
.hero h1 {
  color: #1d1d1f;
  font-weight: 650;
}
.hero h1 > span {
  color: #0071e3;
}
.hero-eyebrow {
  color: #6e6e73;
}
.hero-eyebrow .status-dot {
  background: #0071e3;
}
.hero-description {
  color: #6e6e73;
}
.eyebrow {
  color: #6e6e73;
  letter-spacing: 0.12em;
}
.text-link {
  color: #0066cc;
}
.button-primary {
  color: #fff;
  background: #0071e3;
  box-shadow: none;
}
.button-primary:hover {
  background: #0077ed;
  box-shadow: 0 5px 18px #0071e31c;
}
.button-dark {
  background: #1d1d1f;
}
.muted-heading {
  color: #86868b;
}
.subhero {
  background: #f5f5f7;
  border-bottom-color: #e8e8ed;
}
.subhero h1,
.subhero h1 .muted-heading,
.experience-hero h1 span {
  color: #1d1d1f;
}
.subhero .lead,
.lead {
  color: #6e6e73;
}
.primary-nav a[aria-current="page"] {
  color: #0071e3;
}
.primary-nav a[aria-current="page"]::after {
  background: #0071e3;
}
.section-heading > p:last-child {
  color: #6e6e73;
}
.lightweight {
  background: #f5f5f7;
}
.delivery-card {
  background: #fff;
  border-color: #e8e8ed;
  box-shadow: 0 8px 40px #00000004;
}
.content-card {
  background: #f5f5f7;
  border: 0;
}
.content-card > p,
.content-card .detail-list {
  color: #6e6e73;
}
.card-index,
.sample-kicker {
  color: #6e6e73;
}
.card-illustration {
  background: #e8f2ff;
  color: #3284d6;
}
.content-card:nth-child(3n + 2) .card-illustration {
  background: #ebedf4;
  color: #7b87a1;
}
.content-card:nth-child(3n + 3) .card-illustration {
  background: #e8edf6;
  color: #6f8ebc;
}
.tag-list span {
  border-color: #dcdce2;
  color: #6e6e73;
}
.callout-note {
  background: #f5f5f7;
  border-left-color: #b9d7f6;
  color: #6e6e73;
}
.page-cta {
  background: #f5f5f7;
}
.page-cta p:not(.eyebrow) {
  color: #6e6e73;
}
.page-cta h2 {
  color: #1d1d1f;
}
.scenario-board {
  border-color: #e8e8ed;
  box-shadow: 0 14px 55px #00000006;
}
.guide-nav {
  border-color: #d2d2d7;
}
.guide-nav a:hover {
  color: #0071e3;
}
.guide-step-number {
  border-color: #d2e5f9;
  background: #f2f7fd;
  color: #0071e3;
}
.comparison-table thead {
  background: #f5f5f7;
  color: #1d1d1f;
}
.demo-rail {
  background: #f5f5f7;
}
.demo-view-nav a[aria-current="true"] {
  background: #e4f0ff;
  color: #0071e3;
}
.demo-view-nav a:hover {
  background: #eeeef0;
}
.demo-space-brand small,
.demo-rail-label,
.demo-rail-footer {
  color: #86868b;
}
.demo-workspace {
  border-color: #e2e2e7;
  box-shadow: 0 12px 55px #00000006;
}
.demo-notice {
  border-color: #dfe5ef;
  background: #f0f6fd;
}
.demo-notice p,
.demo-notice b {
  color: #58718d;
}
.demo-notice .status-dot {
  background: #0071e3;
}
.search-box {
  background: #f5f5f7;
  border-color: #e8e8ed;
}
.search-box input {
  color: #1d1d1f;
}
.search-box:focus-within {
  outline-color: #0071e3;
}
.course-filters button[aria-pressed="true"] {
  background: #e8f2ff;
  color: #0071e3;
}
.art-forest,
.art-course {
  background: linear-gradient(130deg, #e8f2ff, #c6ddff);
  color: #376baf;
}
.art-paper {
  background: linear-gradient(130deg, #eeeef5, #dadceb);
  color: #727b9b;
}
.art-blue {
  background: linear-gradient(130deg, #e6f1fc, #c7dff1);
  color: #5380a2;
}
.art-rose {
  background: linear-gradient(130deg, #fbeced, #f0d8de);
  color: #a57083;
}
.art-sage {
  background: linear-gradient(130deg, #eaf0f7, #d8e1ed);
  color: #6c83a4;
}
.art-charcoal {
  background: linear-gradient(130deg, #373d48, #1d222a);
  color: #f5f5f7;
}
.art-practice {
  background: #eeeef5;
  color: #737c9d;
}
.art-scenario {
  background: #e8edf5;
  color: #627e9b;
}
.art-answers b:nth-child(2) {
  background: #0071e3;
}
.quiz-options button[aria-pressed="true"] {
  background: #f0f6ff;
  border-color: #72aceb;
}
.quiz-options button.is-correct {
  background: #edf5ff;
  border-color: #0071e3;
}
.quiz-options button > span {
  background: #f0f3f8;
  color: #6e7f97;
}
.quiz-progress-track span {
  background: #0071e3;
}
.quiz-feedback,
.quiz-result-mark,
.demo-tip {
  background: #f0f6fd;
  color: #5e7795;
}
.access-preview {
  background: #f5f5f7;
}
.access-form input {
  accent-color: #0071e3;
}
.access-status,
.access-preview li.is-allowed b {
  color: #0071e3;
}
.access-status {
  border-color: #b5d3f5;
}
.lesson-nav {
  background: #f5f5f7;
}
.lesson-nav button[aria-pressed="true"] {
  background: #e4f0ff;
  color: #0071e3;
}
.sample-takeaway {
  background: #f0f6fd;
  border-color: #b5d3f5;
}
.phone-banner {
  background: linear-gradient(135deg, #dceaff, #bcd2f3);
  color: #3d587a;
}
.phone-course-art,
.cover-green {
  background: linear-gradient(140deg, #d6e7ff, #a8c9f7);
  color: #456895;
}
.cover-cream {
  background: linear-gradient(140deg, #e9eaf3, #d3d7e8);
  color: #697390;
}
.sidebar-item.active {
  background: #e6f0ff;
  color: #0071e3;
}
.workspace-sidebar {
  background: #f5f5f7;
}
.phone-bottom .selected {
  color: #0071e3;
}
.protection {
  background: #1d1d1f;
}
.protection::after {
  opacity: 0.25;
}
.closing-card {
  background: #f5f5f7;
}
.closing-card h2 {
  color: #1d1d1f;
}
.closing-card .eyebrow,
.closing-card > p:not(.eyebrow) {
  color: #6e6e73;
}
.closing-card::before,
.closing-card::after {
  opacity: 0.25;
}
.closing-card .button {
  color: #fff;
  background: #0071e3;
}
.closing-card .text-link {
  color: #0066cc;
}
.site-footer {
  background: #f5f5f7;
}
@media (max-width: 1050px) {
  .primary-nav {
    background: #fffffffa;
  }
}
@media (prefers-reduced-motion: reduce) {
  .preview-card,
  .demo-course-card,
  .quiz-progress-track span {
    transition: none;
  }
}