@charset "UTF-8";

/* Shared page components — DESIGN.md rhythm (Inter substitute, hairline depth, cool tech palette) */

/* ── Typography scale ── */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3 {
  color: var(--ds-ink);
}

h1, .h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

h2, .h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

h3, .h3 {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
}

.lead {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ds-body);
}

.ds-section-label {
  display: block;
  font-family: var(--ds-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ds-accent);
  margin-bottom: 8px;
}

/* ── Page heroes ── */
.help-header,
body.page-site .page-product-body,
body.page-site .page-about-body {
  position: relative;
  z-index: 1;
}

.hero-mini {
  text-align: center;
  padding: clamp(40px, 6vw, 60px) 20px 28px;
  max-width: 720px;
  margin: 0 auto;
}

.help-header h1,
.hero-mini h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  color: var(--ds-ink);
  margin-bottom: 12px;
}

.help-header .subhead,
.hero-mini .tagline {
  font-size: 16px;
  line-height: 1.55;
  color: var(--ds-body);
  margin-bottom: 32px;
}

.hero-product {
  padding: clamp(48px, 8vw, var(--ds-section)) 0;
}

.hero-product h1 {
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero-product .lead {
  font-size: 17px;
  opacity: 1;
}

.hero-product .badge-free {
  background: rgba(59, 130, 246, 0.1);
  color: var(--ds-primary);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 9999px;
}

.product-image {
  max-width: 100%;
  border-radius: var(--ds-radius-lg);
  border: 1px solid var(--ds-hairline);
  box-shadow: none;
}

.feature-tags {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  color: var(--ds-ink);
  font-size: 14px;
}

.feature-tags span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}

.feature-tags i {
  color: var(--ds-primary);
  font-size: 1rem;
}

/* ── Search ── */
.search-box {
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

.search-box input {
  width: 100%;
  min-height: 44px;
  padding: 12px 52px 12px 16px;
  border: 1px solid var(--ds-hairline);
  border-radius: var(--ds-radius-md);
  font-size: 16px;
  background: var(--ds-surface-card);
  box-shadow: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-box input:focus {
  outline: none;
  border-color: var(--ds-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.search-box button {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  background: transparent;
  border: none;
  padding: 0 16px;
  color: var(--ds-muted);
  font-size: 1.1rem;
  cursor: pointer;
  transition: color 0.15s ease;
}

.search-box button:hover {
  color: var(--ds-primary);
}

/* ── Grids ── */
.help-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 48px auto var(--ds-section);
  padding: 0 20px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1080px;
  margin: 56px auto 64px;
  padding: 0 24px;
}

.teacher-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.sdk-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.dev-section {
  margin-bottom: clamp(48px, 8vw, var(--ds-section));
  position: relative;
  z-index: 1;
}

.page-developer > .container {
  position: relative;
  z-index: 1;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ds-hairline-soft);
}

.section-header h2 {
  font-size: clamp(1.375rem, 2.5vw, 1.625rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ds-ink);
  margin: 0;
}

.section-header a {
  color: var(--ds-primary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}

.section-header a:hover {
  text-decoration: underline;
}

/* ── Surface cards (unified) ── */
.help-card,
.product-card,
.teacher-card,
.sdk-card,
.blog-card,
.feature-card,
.app-item,
.contact-card,
.join-card,
.investor-card,
.company-intro {
  border: 1px solid var(--ds-hairline);
  border-radius: var(--ds-radius-lg);
  box-shadow: none;
  transition: border-color 0.2s ease;
}

.help-card {
  padding: 24px;
}

.help-card:hover,
.product-card:hover,
.sdk-card:hover,
.blog-card:hover {
  border-color: rgba(59, 130, 246, 0.28);
  transform: none;
  box-shadow: none;
}

.help-card .card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  background: transparent;
  border: none;
  padding: 0;
}

.help-card .card-header i {
  font-size: 1.25rem;
  color: var(--ds-primary);
  background: var(--primary-tint);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--ds-radius-md);
  flex-shrink: 0;
}

.help-card .card-header h2 {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
}

.question-list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}

.question-list li {
  margin-bottom: 10px;
}

.question-list a {
  color: var(--ds-ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  line-height: 1.5;
  transition: color 0.15s ease;
}

.question-list a:hover {
  color: var(--ds-primary);
}

.question-list a i {
  font-size: 0.75rem;
  color: var(--ds-muted-soft);
}

.question-list a:hover i {
  color: var(--ds-primary);
}

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ds-primary);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
}

.more-link:hover {
  text-decoration: underline;
}

/* ── Product / experience cards ── */
.product-card {
  padding: 32px 28px 28px;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  min-height: 100%;
}

.product-card .card-icon {
  width: 48px;
  height: 48px;
  margin: 0 0 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.product-card .card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--ds-ink);
  letter-spacing: -0.01em;
}

.product-card .card-desc {
  color: var(--ds-body);
  font-size: 15px;
  line-height: 1.65;
  margin-bottom: 0;
  flex: 1 1 auto;
}

.product-card .card-btn {
  background: var(--ds-primary);
  border: 1px solid var(--ds-primary);
  color: var(--ds-on-primary);
  border-radius: var(--ds-radius-md);
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  margin-top: 24px;
  min-width: 9rem;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.product-card .card-btn:hover {
  background: var(--ds-primary-active);
  border-color: var(--ds-primary-active);
  color: var(--ds-on-primary);
  text-decoration: none;
}

.product-card .card-btn--soon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  margin-top: 24px;
  min-width: 9rem;
  background: var(--ds-surface-strong);
  border: 1px solid var(--ds-hairline);
  color: var(--ds-muted);
  border-radius: var(--ds-radius-md);
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: not-allowed;
}

.product-card .card-btn.is-loading {
  opacity: 0.65;
  pointer-events: none;
}

.core-capabilities {
  text-align: center;
  max-width: 960px;
  margin: var(--ds-section) auto 48px;
  padding: 0 20px;
}

.core-capabilities h2 {
  font-size: clamp(1.375rem, 2.5vw, 1.625rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  color: var(--ds-ink);
}

.capability-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.capability-item {
  background: var(--ds-surface-card);
  border: 1px solid var(--ds-hairline);
  border-radius: 9999px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ds-ink);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: none;
}

.capability-item i {
  color: var(--ds-primary);
  font-size: 0.875rem;
}

/* ── Developer page ── */
.teacher-card {
  background: var(--ds-canvas-soft);
  padding: 24px 20px;
  text-align: center;
}

.teacher-avatar {
  width: 80px;
  height: 80px;
  background: var(--ds-surface-strong);
  border-radius: 50%;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ds-primary);
  font-size: 2rem;
}

.teacher-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--ds-ink);
}

.teacher-title {
  color: var(--ds-body);
  font-size: 13px;
  margin-bottom: 8px;
}

.teacher-desc {
  color: var(--ds-muted);
  font-size: 13px;
  line-height: 1.5;
}

.sdk-card {
  padding: 24px;
  text-decoration: none;
  color: inherit;
  display: block;
}

.sdk-icon {
  font-size: 1.5rem;
  color: var(--ds-primary);
  margin-bottom: 12px;
}

.sdk-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ds-ink);
}

.sdk-desc {
  color: var(--ds-body);
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 12px;
}

.sdk-tag {
  display: inline-block;
  background: var(--ds-surface-strong);
  color: var(--ds-ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 9999px;
}

.blog-card {
  padding: 24px;
}

.blog-date {
  color: var(--ds-muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.blog-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
}

.blog-title a {
  color: var(--ds-ink);
  text-decoration: none;
}

.blog-title a:hover {
  color: var(--ds-primary);
}

.blog-desc {
  color: var(--ds-body);
  font-size: 14px;
  margin-bottom: 0;
}

.docs-category {
  background: var(--ds-canvas-soft);
  border: 1px solid var(--ds-hairline);
  border-radius: var(--ds-radius-lg);
  padding: 24px;
}

.docs-category h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--ds-hairline);
}

.docs-category h3 a {
  color: var(--ds-ink);
  text-decoration: none;
}

.docs-category h3 a:hover {
  color: var(--ds-primary);
}

.docs-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-list li {
  margin-bottom: 10px;
}

.docs-list a {
  color: var(--ds-ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.docs-list a:hover {
  color: var(--ds-primary);
}

.docs-list a i {
  font-size: 0.75rem;
  color: var(--ds-muted-soft);
}

/* ── Product detail page ── */
.feature-card {
  padding: 24px 20px;
  text-align: center;
  height: 100%;
}

.feature-icon {
  width: 52px;
  height: 52px;
  line-height: 52px;
  font-size: 1.25rem;
  color: var(--ds-primary);
  background: var(--primary-tint);
  border-radius: var(--ds-radius-md);
  margin: 0 auto 16px;
}

.feature-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--ds-ink);
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 12px;
}

.app-item {
  padding: 14px 8px;
  text-align: center;
}

.app-item:hover {
  border-color: rgba(59, 130, 246, 0.28);
}

.app-icon {
  font-size: 1.5rem;
  color: var(--ds-primary);
  margin-bottom: 6px;
}

.app-name {
  font-size: 12px;
  color: var(--ds-body);
}

.purchase-guide {
  border-radius: var(--ds-radius-lg);
  padding: clamp(36px, 5vw, 48px) clamp(28px, 4vw, 40px);
}

.purchase-guide h2 {
  font-size: clamp(1.375rem, 2.5vw, 1.625rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.purchase-guide .lead {
  margin-bottom: 28px;
}

.purchase-guide #userTypeToggle {
  margin-bottom: 28px !important;
}

.stats-badge {
  background: var(--ds-canvas-soft);
  border: 1px solid var(--ds-hairline);
  border-radius: var(--ds-radius-md);
  padding: 18px 16px;
  text-align: center;
  height: 100%;
}

.stats-badge .number {
  display: block;
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--ds-ink);
  line-height: 1.2;
}

.stats-badge > span:not(.number) {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--ds-muted);
  line-height: 1.4;
}

.store-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.store-icon {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--ds-primary);
  background: var(--ds-surface-strong);
  border: 1px solid var(--ds-hairline);
  border-radius: var(--ds-radius-md);
  margin-bottom: 16px;
}

.store-card h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ds-ink);
}

.store-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ds-body);
  margin-bottom: 0;
  flex: 1 1 auto;
}

.btn-buy {
  background: var(--ds-primary);
  color: var(--ds-on-primary);
  border-radius: var(--ds-radius-md);
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 500;
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.learn-more-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  height: 100%;
  padding: 28px 24px;
  text-align: left;
}

.learn-more-card > i {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  color: var(--ds-primary);
  background: var(--ds-surface-strong);
  border: 1px solid var(--ds-hairline);
  border-radius: var(--ds-radius-md);
  margin-bottom: 16px;
}

.learn-more-card h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--ds-ink);
}

.learn-more-card p {
  font-size: 14px;
  line-height: 1.65;
  margin-bottom: 0;
  flex: 1 1 auto;
}

.learn-more-card .btn {
  margin-top: 20px;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 500;
}

.learn-more-grid > [class*="col-"] {
  display: flex;
}

.learn-more-grid .learn-more-card {
  width: 100%;
}

.btn-buy:hover {
  background: var(--ds-primary-active);
  color: var(--ds-on-primary);
  text-decoration: none;
}

/* ── About page ── */
#aboutCarousel {
  height: 420px;
  width: 100%;
  overflow: hidden;
  border-bottom: 1px solid var(--ds-hairline);
}

#aboutCarousel .carousel-inner,
#aboutCarousel .carousel-item,
#aboutCarousel .carousel-item a {
  height: 100%;
}

#aboutCarousel .carousel-item img {
  height: 100%;
  width: 100%;
  object-fit: cover;
}

#aboutCarousel .carousel-caption {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(15, 23, 42, 0.55) 0%, rgba(15, 23, 42, 0.42) 100%);
  display: flex !important;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  z-index: 10;
}

#aboutCarousel .carousel-caption h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  color: #fff;
  -webkit-text-fill-color: #fff;
  background: none;
  text-shadow: none;
}

#aboutCarousel .carousel-caption p {
  font-size: 16px;
  max-width: 640px;
  margin: 0 auto;
  opacity: 0.92;
  line-height: 1.55;
}

#aboutCarousel .carousel-indicators li {
  background-color: rgba(255, 255, 255, 0.45);
  width: 24px;
  height: 2px;
  border-radius: 0;
}

#aboutCarousel .carousel-indicators .active {
  background-color: #fff;
}

.company-intro {
  padding: clamp(32px, 5vw, 48px) clamp(24px, 4vw, 40px);
  position: relative;
}

.company-intro::before {
  display: none;
}

.contact-card {
  padding: 24px 16px;
  text-align: center;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact-card i {
  font-size: 1.75rem;
  color: var(--ds-primary);
  margin-bottom: 12px;
  background: none;
  -webkit-text-fill-color: unset;
}

.contact-card h5 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ds-ink);
}

.contact-card p {
  margin-bottom: 0;
  font-size: 14px;
  color: var(--ds-body);
}

.contact-card a {
  color: var(--ds-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
}

.contact-card a:hover {
  text-decoration: underline;
}

.contact-card small {
  color: var(--ds-muted);
  font-size: 12px;
  margin-top: 4px;
}

.join-card {
  padding: 32px 24px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.join-card::before {
  display: none;
}

.join-card:hover {
  border-color: rgba(59, 130, 246, 0.28);
  transform: none;
  box-shadow: none;
}

.join-icon {
  font-size: 2.5rem;
  color: var(--ds-primary);
  margin-bottom: 16px;
  background: none;
  -webkit-text-fill-color: unset;
  filter: none;
}

.join-card h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  color: var(--ds-ink);
  background: none;
  -webkit-text-fill-color: unset;
}

.join-card p {
  color: var(--ds-body);
  margin-bottom: 20px;
  font-size: 15px;
  line-height: 1.6;
}

.btn-join {
  background: var(--ds-primary);
  border: none;
  color: var(--ds-on-primary);
  padding: 10px 22px;
  border-radius: var(--ds-radius-md);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0;
  box-shadow: none;
  text-decoration: none;
  display: inline-block;
  transition: background 0.15s ease;
}

.btn-join:hover {
  background: var(--ds-primary-active);
  color: var(--ds-on-primary);
  transform: none;
  box-shadow: none;
  text-decoration: none;
}

.investor-card {
  padding: clamp(32px, 5vw, 48px);
  color: var(--ds-ink);
  position: relative;
}

.investor-card::before,
.investor-card::after {
  display: none;
}

.investor-card h2 {
  margin-bottom: 32px;
  font-size: clamp(1.375rem, 2.5vw, 1.625rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  text-align: center;
  color: var(--ds-ink);
  background: none;
  -webkit-text-fill-color: unset;
}

.investor-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.investor-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  padding: 14px 16px;
  background: var(--ds-canvas-soft);
  border-radius: var(--ds-radius-md);
  border: 1px solid var(--ds-hairline);
  box-shadow: none;
}

.investor-item i {
  font-size: 1.125rem;
  color: var(--ds-primary);
  width: 28px;
  text-align: center;
  flex-shrink: 0;
}

.investor-item .label {
  color: var(--ds-muted);
  margin-right: 4px;
}

.investor-item .value {
  color: var(--ds-ink);
  font-weight: 500;
}

.investor-item a {
  color: var(--ds-primary);
  text-decoration: none;
}

.investor-item a:hover {
  text-decoration: underline;
}

/* ── Support page ── */
.support-content {
  color: var(--ds-ink);
  line-height: 1.6;
}

.support-content .container {
  max-width: 1200px;
}

.support-content .section-title {
  font-size: clamp(1.375rem, 2.5vw, 1.625rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ds-ink);
  margin: clamp(40px, 6vw, 60px) 0 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ds-hairline);
}

.support-content .section-title::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, #64748b 0%, #94a3b8 100%);
}

.support-content .section-title {
  position: relative;
  margin-bottom: 28px;
}

.support-content .card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-bottom: 56px;
  align-items: stretch;
}

.support-content .service-card {
  border-radius: var(--ds-radius-lg);
  padding: 32px;
  border: 1px solid var(--ds-hairline);
  display: flex;
  flex-direction: column;
}

.support-content .service-card:hover {
  border-color: rgba(59, 130, 246, 0.22);
  box-shadow: none;
}

.support-content .service-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ds-ink);
}

.support-content .service-card h3.service-subhead {
  margin-top: 4px;
  margin-bottom: 16px;
}

.support-content .service-card h3 i {
  color: #475569;
  font-size: 1.125rem;
  width: 1.25rem;
  text-align: center;
  flex-shrink: 0;
}

.support-content .hotline-box {
  border-radius: var(--ds-radius-md);
  padding: 20px 18px;
  margin-bottom: 24px;
  text-align: center;
}

.support-content .hotline-label {
  font-size: 13px;
  color: var(--ds-muted);
  margin-bottom: 4px;
}

.support-content .hotline-number {
  font-size: clamp(1.625rem, 3vw, 1.875rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ds-ink);
  margin: 8px 0 6px;
  line-height: 1.2;
  font-family: var(--ds-mono);
}

.support-content .service-time {
  color: var(--ds-body);
  font-size: 14px;
}

.support-content .feature-list {
  list-style: none;
  padding: 0;
  margin: 4px 0 0;
  flex: 1 1 auto;
}

.support-content .feature-list li {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  margin-bottom: 0;
  align-items: flex-start;
  font-size: 15px;
  color: var(--ds-body);
  border-bottom: 1px solid var(--ds-hairline-soft);
}

.support-content .feature-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.support-content .feature-list li i {
  color: #64748b;
  font-size: 1rem;
  margin-top: 2px;
}

.support-content .warranty-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.support-content .warranty-card {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
}

.support-content .warranty-card:hover {
  border-color: rgba(59, 130, 246, 0.28);
  transform: none;
  box-shadow: none;
}

.support-content .warranty-card .card-icon {
  font-size: 1.5rem;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--ds-radius-md);
  margin-bottom: 18px;
  border: 1px solid rgba(203, 213, 225, 0.85);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

.page-support .warranty-card--essentials {
  --tier-accent: #64748b;
  --tier-icon-bg: rgba(248, 250, 252, 0.95);
}

.page-support .warranty-card--smart {
  --tier-accent: #334155;
  --tier-icon-bg: rgba(241, 245, 249, 0.95);
}

.page-support .warranty-card--elite {
  --tier-accent: #92400e;
  --tier-icon-bg: rgba(255, 251, 235, 0.92);
}

.page-support .warranty-card .card-icon {
  color: var(--tier-accent, #475569);
  background: var(--tier-icon-bg, rgba(255, 255, 255, 0.82)) !important;
  border-color: rgba(203, 213, 225, 0.85) !important;
}

.support-content .warranty-card .card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--ds-ink);
}

.support-content .warranty-card .card-subtitle {
  font-size: 13px;
  color: var(--ds-muted);
  margin-bottom: 16px;
  border-bottom: 1px solid var(--ds-hairline-soft);
  padding-bottom: 14px;
}

.support-content .warranty-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  flex-grow: 1;
}

.support-content .warranty-card li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  color: var(--ds-body);
  font-size: 14px;
}

.support-content .warranty-card li i {
  color: var(--tier-accent, #64748b);
  font-size: 0.875rem;
  width: 18px;
  text-align: center;
  opacity: 0.88;
}

.support-content .badge-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.support-content .badge {
  background: rgba(255, 255, 255, 0.72);
  color: var(--ds-body);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(203, 213, 225, 0.85);
  letter-spacing: 0.01em;
}

.support-content .badge i {
  font-size: 0.75rem;
  color: var(--tier-accent, #64748b);
  opacity: 0.9;
}

.support-content .feedback-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0 var(--ds-section);
}

.support-content .feedback-card {
  background: var(--ds-canvas-soft);
  border-radius: var(--ds-radius-lg);
  padding: 28px;
  border: 1px solid var(--ds-hairline);
}

.support-content .feedback-card:hover {
  border-color: rgba(59, 130, 246, 0.22);
  box-shadow: none;
}

.support-content .feedback-card h4 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--ds-ink);
}

.support-content .feedback-card p {
  font-size: 14px;
  color: var(--ds-body);
  margin-bottom: 18px;
}

.support-content .btn-outline-primary {
  border: 1px solid var(--ds-hairline-strong);
  color: var(--ds-ink);
  background: var(--ds-surface-card);
  padding: 10px 18px;
  border-radius: var(--ds-radius-md);
  font-weight: 500;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.support-content .btn-outline-primary:hover {
  border-color: var(--ds-primary);
  color: var(--ds-primary);
  background: rgba(59, 130, 246, 0.05);
}

/* ── Legal / article content ── */
.legal-content {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ds-body);
  max-width: 800px;
  margin: 0 auto;
  padding: clamp(28px, 4vw, 40px) clamp(20px, 3vw, 32px);
  background: var(--ds-surface-card);
  border-radius: var(--ds-radius-lg);
  border: 1px solid var(--ds-hairline);
  box-shadow: none;
}

.legal-content h1,
.legal-content h2,
.legal-content h3 {
  font-weight: 600;
  color: var(--ds-ink);
  margin-top: 1.5em;
  margin-bottom: 0.75em;
}

.legal-content h1 {
  font-weight: 400;
  letter-spacing: -0.02em;
}

.legal-content p {
  margin-bottom: 1em;
}

.legal-content ul,
.legal-content ol {
  margin-bottom: 1em;
  padding-left: 1.5em;
}

.legal-content li {
  margin-bottom: 0.35em;
}

.legal-content a {
  color: var(--ds-primary);
}

.legal-content th,
.legal-content td {
  border: 1px solid var(--ds-hairline);
  padding: 10px 12px;
  font-size: 14px;
}

.legal-content th {
  background: var(--ds-canvas-soft);
  font-weight: 600;
  color: var(--ds-ink);
}

.hero-section {
  height: 360px;
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--ds-hairline);
}

.hero-section h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  text-shadow: none;
}

.hero-section p {
  font-size: 16px;
  opacity: 0.95;
}

/* ── Mem user (connect page) ── */
.page-mem-user body,
body.page-mem-user {
  background: var(--ds-canvas);
}

.mem-user .wrapper,
body:not(.page-mem-user) .wrapper {
  /* fallback for mem_user without body class */
}

.glass-card {
  background: var(--ds-surface-card);
  border: 1px solid var(--ds-hairline);
  border-radius: var(--ds-radius-lg);
  box-shadow: none;
  padding: clamp(32px, 5vw, 48px) clamp(24px, 4vw, 40px);
  max-width: 480px;
  width: 100%;
  transition: border-color 0.2s ease;
}

.glass-card:hover {
  transform: none;
  border-color: rgba(59, 130, 246, 0.22);
}

.badge-upgrade {
  background: var(--ds-surface-strong);
  color: var(--ds-ink);
  border-radius: 9999px;
  padding: 6px 14px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 20px;
  border: 1px solid var(--ds-hairline);
}

.display-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  color: var(--ds-ink);
  margin-bottom: 8px;
  background: none;
  -webkit-text-fill-color: unset;
}

.input-group-clean {
  border-radius: var(--ds-radius-md);
  background: var(--ds-surface-card);
  border: 1px solid var(--ds-hairline);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  overflow: hidden;
}

.input-group-clean:focus-within {
  border-color: var(--ds-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.input-group-clean input {
  border: none;
  background: transparent;
  padding: 12px 16px;
  font-size: 16px;
  outline: none;
  width: 100%;
  color: var(--ds-ink);
}

.input-group-clean input::placeholder {
  color: var(--ds-muted);
}

.btn-connect {
  background: var(--ds-muted-soft);
  color: var(--ds-on-primary);
  border: none;
  border-radius: var(--ds-radius-md);
  padding: 12px 20px;
  font-weight: 500;
  font-size: 14px;
  width: 100%;
  min-height: 44px;
  transition: background 0.15s ease;
  opacity: 1;
  pointer-events: none;
  box-shadow: none;
}

.btn-connect.active {
  background: var(--ds-primary);
  pointer-events: auto;
  cursor: pointer;
}

.btn-connect.active:hover {
  background: var(--ds-primary-active);
  transform: none;
  box-shadow: none;
}

.feature-mini {
  background: var(--ds-canvas-soft);
  border: 1px solid var(--ds-hairline);
  border-radius: 9999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ds-ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: none;
}

.bg-decoration .circle {
  background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
}

.circle-2 {
  background: radial-gradient(circle, rgba(148, 163, 184, 0.08) 0%, transparent 70%) !important;
}

/* ── Responsive ── */
@media (max-width: 1000px) {
  .help-grid,
  .teacher-grid,
  .sdk-grid,
  .docs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .support-content .warranty-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  #aboutCarousel {
    height: 280px;
  }

  .investor-info {
    grid-template-columns: 1fr;
  }

  .support-content .card-grid,
  .support-content .feedback-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 650px) {
  .help-grid,
  .product-grid,
  .teacher-grid,
  .sdk-grid,
  .blog-grid,
  .docs-grid,
  .support-content .warranty-grid {
    grid-template-columns: 1fr;
  }
}

/* Cookie 同意提示条 */
.cookie-consent-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1080;
  background: rgba(15, 23, 42, 0.96);
  color: #e2e8f0;
  padding: 14px 16px;
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.18);
}

.cookie-consent-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.cookie-consent-text {
  flex: 1 1 280px;
  font-size: 13px;
  line-height: 1.6;
  color: #cbd5e1;
}

.cookie-consent-text a {
  color: #93c5fd;
  text-decoration: underline;
}

.cookie-consent-btn {
  flex-shrink: 0;
  min-width: 88px;
}

body.cookie-consent-visible {
  padding-bottom: 72px;
}

@media (max-width: 576px) {
  body.cookie-consent-visible {
    padding-bottom: 96px;
  }

  .cookie-consent-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .cookie-consent-btn {
    width: 100%;
  }
}

/* 加入我们：查看职位悬浮提示 */
.btn-join[title] {
  cursor: default;
}