/* 高质量数据集页 v1.4 */
.dataset-v14 {
  background: #000;
  color: #f5f5f7;
}

.dataset-v14 .td-nav-spacer {
  height: 48px;
}

.ds-layout {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Subnav */
.ds-subnav {
  position: sticky;
  top: 48px;
  z-index: 40;
  width: 100%;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ds-subnav__inner {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
  height: 44px;
  display: flex;
  align-items: center;
}

.ds-subnav__label {
  flex-shrink: 0;
  margin-right: 32px;
  font-size: 12px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.04em;
}

.ds-subnav__links {
  display: flex;
  align-items: stretch;
  height: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.ds-subnav__links a {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 16px;
  flex-shrink: 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s;
}

.ds-subnav__links a.is-active,
.ds-subnav__links a:hover {
  color: #f5f5f7;
}

.ds-subnav__links a.is-active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  border-radius: 2px 2px 0 0;
  background: #38bdf8;
}

/* Hero */
.ds-hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #000;
  padding: 64px 0;
}

.ds-hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.04;
  background-image:
    linear-gradient(rgba(0, 113, 227, 0.9) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 113, 227, 0.9) 1px, transparent 1px);
  background-size: 60px 60px;
}

.ds-hero__glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 70% 55% at 50% 40%, rgba(56, 189, 248, 0.14) 0%, transparent 70%);
}

.ds-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 56px;
}

.ds-hero__copy {
  flex: 1 1 280px;
  min-width: 280px;
}

.ds-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  margin-bottom: 24px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  font-size: 12px;
  font-weight: 500;
  color: #38bdf8;
  letter-spacing: 0.04em;
}

.ds-hero__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #38bdf8;
  animation: ds-pulse 1.6s ease-in-out infinite;
}

@keyframes ds-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.ds-hero__title {
  margin: 0 0 20px;
  font-size: clamp(2.6rem, 5.5vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
  line-height: 1.08;
}

.ds-hero__title-grad {
  background: linear-gradient(135deg, #38bdf8 0%, #22d3ee 45%, #7dd3fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.ds-hero__desc {
  margin: 0 0 32px;
  max-width: 480px;
  font-size: clamp(0.95rem, 1.7vw, 1.0625rem);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.75;
}

.ds-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s;
}

.ds-btn:hover {
  opacity: 0.85;
}

.ds-btn--primary {
  background: #0071e3;
  color: #fff;
}

.ds-hero__metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  margin-top: 40px;
}

.ds-hero__metrics strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  line-height: 1;
}

.ds-hero__metrics span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.32);
}

.ds-hero__panel {
  flex: 0 0 380px;
  max-width: 100%;
  width: 380px;
}

.ds-panel {
  border-radius: 16px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
}

.ds-panel__live {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
}

.ds-panel__live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  animation: ds-pulse 1.6s ease-in-out infinite;
}

.ds-panel__card {
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(56, 189, 248, 0.13);
}

.ds-panel__card-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.ds-panel__tag {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent, #38bdf8);
  margin-bottom: 2px;
}

.ds-panel__name {
  font-size: 14px;
  font-weight: 600;
  color: #f5f5f7;
}

.ds-panel__count {
  font-size: 12px;
  font-weight: 700;
  color: var(--accent, #38bdf8);
  white-space: nowrap;
}

.ds-panel__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.ds-panel__chips span {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  background: rgba(56, 189, 248, 0.09);
}

.ds-panel__foot {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.ds-panel__foot strong {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

.ds-panel__foot span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.32);
}

/* Sections */
.ds-section {
  position: relative;
  padding: 96px 0;
  overflow: hidden;
}

.ds-section--light {
  background: #f5f5f7;
  color: #1d1d1f;
}

.ds-section--dark {
  background: #000;
  color: #f5f5f7;
}

.ds-section--dark::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(56, 189, 248, 0.07) 0%, transparent 70%);
}

.ds-section__row {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 56px;
}

.ds-section__row--flip {
  flex-direction: row-reverse;
}

.ds-section__text {
  flex: 1 1 280px;
  min-width: 280px;
}

.ds-section__eyebrow {
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #0071e3;
}

.ds-section__title {
  margin: 0 0 16px;
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.ds-section--light .ds-section__title { color: #1d1d1f; }
.ds-section--dark .ds-section__title { color: #fff; }

.ds-section__desc {
  margin: 0 0 20px;
  font-size: 0.9375rem;
  line-height: 1.75;
}

.ds-section--light .ds-section__desc { color: #6e6e73; }
.ds-section--dark .ds-section__desc { color: rgba(255, 255, 255, 0.55); }

.ds-section__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.ds-section__tags span {
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12px;
  background: rgba(0, 113, 227, 0.08);
  color: #0071e3;
  border: 1px solid rgba(0, 113, 227, 0.19);
}

.ds-section__tags--dark span {
  background: rgba(56, 189, 248, 0.1);
  color: #38bdf8;
  border-color: rgba(56, 189, 248, 0.19);
}

.ds-features {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
}

.ds-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.55;
}

.ds-section--light .ds-features li { color: #6e6e73; }
.ds-section--dark .ds-features li { color: rgba(255, 255, 255, 0.55); }

.ds-section--light .ds-features strong { color: #1d1d1f; }
.ds-section--dark .ds-features strong { color: #f5f5f7; }

.ds-features__check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border-radius: 50%;
  background: rgba(0, 113, 227, 0.15);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10' fill='none'%3E%3Cpolyline points='2,5 4,7 8,3' stroke='%230071e3' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.ds-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: #0071e3;
  text-decoration: none;
}

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

/* Visuals */
.ds-visual {
  flex: 0 0 360px;
  max-width: 100%;
  width: 360px;
  border-radius: 16px;
  padding: 24px;
}

.ds-visual--light {
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.ds-visual--dark {
  background: rgba(14, 28, 54, 0.6);
  border: 1px solid rgba(56, 189, 248, 0.18);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.ds-visual__head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 12px;
  color: #86868b;
}

.ds-visual__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
}

.ds-visual__dot--blue {
  background: #0071e3;
}

.ds-visual__label {
  margin-bottom: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #38bdf8;
}

.ds-visual__label--blue {
  color: #0071e3;
}

.ds-bars__row {
  margin-bottom: 16px;
}

.ds-bars__row > span {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  color: #6e6e73;
}

.ds-bars__track {
  height: 6px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.06);
  overflow: hidden;
}

.ds-bars__track i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: #0071e3;
}

.ds-visual__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.07);
}

.ds-visual__stats--center {
  justify-items: center;
  text-align: center;
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.ds-visual__stats strong {
  display: block;
  font-size: 1.125rem;
  font-weight: 700;
  color: #1d1d1f;
}

.ds-visual__stats span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: #86868b;
}

.ds-mod-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.ds-mod-grid__item {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  padding: 16px;
  font-size: 14px;
  font-weight: 600;
  color: #f5f5f7;
  background: rgba(56, 189, 248, 0.06);
  border: 1px solid rgba(56, 189, 248, 0.14);
  text-align: center;
}

.ds-industries {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.ds-industries span {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  background: #f5f5f7;
  color: #1d1d1f;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.ds-visual__box {
  padding: 16px;
  border-radius: 12px;
  background: #f5f5f7;
  border: 1px solid rgba(0, 0, 0, 0.07);
}

/* Contact */
.ds-contact {
  position: relative;
  padding: 80px 0;
  background: #06080f;
  overflow: hidden;
}

.ds-contact::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, rgba(0, 113, 227, 0.5), transparent);
}

.ds-contact__title {
  margin: 0 0 48px;
  text-align: center;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: #f5f5f7;
  letter-spacing: -0.025em;
}

.ds-contact__grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: start;
}

.ds-contact__label {
  margin: 0 0 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.04em;
}

.ds-contact__value {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
  color: #f5f5f7;
}

.ds-contact__divider {
  height: 1px;
  margin: 32px 0;
  background: rgba(255, 255, 255, 0.06);
}

.ds-contact__form .apply-container {
  background: transparent;
  padding: 0;
}

.ds-contact__form .contact-try {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 24px;
}

.ds-contact__form .contact-try h2,
.ds-contact__form .contact-way {
  display: none;
}

.ds-contact__form .contact-message,
.ds-contact__form .contact-apply {
  float: none;
  width: 100%;
}

.ds-contact__form .input-contact {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
}

.ds-contact__form .ope-submit button {
  background: #0071e3;
  border-radius: 999px;
}

.ds-contact__form .contact-message.user-message {
  width: 100%;
  float: none;
}

.ds-contact__form .contact-message.user-message ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}

.ds-contact__form .contact-message.user-message li {
  width: auto;
  float: none;
  padding-bottom: 0;
  position: relative;
}

.ds-contact__form .contact-message.user-message li input.input-contact,
.ds-contact__form .contact-message.user-message li input {
  width: 100%;
  height: 42px;
  line-height: 42px;
  padding: 0 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 14px;
  box-sizing: border-box;
}

.ds-contact__form .contact-message.user-message li input::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.ds-contact__form .contact-message.user-message li span[name="vcode"] i {
  position: absolute;
  right: 12px;
  top: 8px;
  height: 26px;
  line-height: 26px;
  color: #38bdf8;
  font-size: 13px;
  font-style: normal;
  cursor: pointer;
}

.ds-contact__form .contact-message.user-message li span em {
  position: absolute;
  left: 4px;
  top: 46px;
  color: #f87171;
  font-size: 12px;
  font-style: normal;
}

.ds-contact__form .ope-submit {
  clear: both;
  width: 100%;
  float: none;
  margin-top: 20px;
}

.ds-contact__form .ope-submit button {
  width: 100%;
  max-width: 240px;
  margin-bottom: 12px;
  padding: 12px 20px;
  border: none;
  border-radius: 999px;
  background: #0071e3;
  color: #fff;
  font-size: 15px;
  cursor: pointer;
}

.ds-contact__form .ope-submit .success-msg,
.ds-contact__form .ope-submit .error-msg {
  display: block;
  font-size: 12px;
  color: #fbbf24;
}

@media (max-width: 900px) {
  .ds-hero__panel,
  .ds-visual {
    width: 100%;
    flex-basis: 100%;
  }

  .ds-section__row--flip {
    flex-direction: column;
  }

  .ds-contact__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .ds-contact__form .contact-message.user-message ul {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .ds-subnav__label {
    display: none;
  }

  .ds-hero {
    min-height: auto;
    padding: 48px 0;
  }

  .ds-section {
    padding: 64px 0;
  }
}