:root {
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-alt: #fbfbfd;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --line: #e5e5ea;
  --primary: #0071e3;
  --primary-hover: #0063cc;
  --success: #1f8f4a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, "Helvetica Neue", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--primary-hover);
}

.container {
  width: min(1220px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 12px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  object-fit: cover;
  border: 1px solid #ebebf0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

nav a {
  color: #4a4a50;
  font-size: 14px;
  padding: 4px 0;
}

nav a.active {
  color: var(--text);
  border-bottom: 2px solid var(--text);
}

.nav-cta {
  white-space: nowrap;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid #d9d9df;
  background: #fff;
  color: #1d1d1f;
}

.nav-cta:hover {
  border-color: #1d1d1f;
  color: #1d1d1f;
}

.hero {
  padding: 36px 0 18px;
  position: relative;
  overflow: hidden;
}

.radar {
  position: absolute;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  right: -140px;
  top: -170px;
  background: radial-gradient(circle, rgba(0, 113, 227, 0.16) 0%, rgba(0, 113, 227, 0) 68%);
  filter: blur(10px);
}

.banner-card {
  display: none;
  position: relative;
  border-radius: 26px;
  overflow: hidden;
  border: 1px solid #ececf2;
  background: #000;
  box-shadow: 0 12px 36px rgba(20, 20, 40, 0.08);
}

.banner-card.active {
  display: block;
}

.banner-card img {
  width: 100%;
  height: 520px;
  object-fit: cover;
}

.banner-overlay {
  position: absolute;
  inset: 0;
  padding: 74px;
  isolation: isolate;
}

.banner-overlay::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    rgba(12, 20, 36, 0.52) 0%,
    rgba(12, 20, 36, 0.28) 38%,
    rgba(12, 20, 36, 0.08) 58%,
    rgba(12, 20, 36, 0) 72%
  );
  pointer-events: none;
  z-index: -1;
}

.banner-overlay h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4vw, 52px);
  max-width: 800px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.28);
}

.banner-overlay p {
  max-width: 700px;
  color: rgba(255, 255, 255, 0.88);
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.22);
}

.banner-kicker {
  margin: 0 0 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(8, 16, 32, 0.22);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
}

.hero-subtitle {
  margin: 0;
  font-size: 18px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 22px;
}

.btn-text {
  color: #fff;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.46);
}

.btn-text:hover {
  color: rgba(255, 255, 255, 0.9);
  border-bottom-color: rgba(255, 255, 255, 0.72);
}

.btn-text-dark {
  color: #1d1d1f;
  font-weight: 500;
  border-bottom: 1px solid #a8a8ae;
}

.btn-text-dark:hover {
  color: #000;
  border-bottom-color: #1d1d1f;
}

.hero-footnote {
  margin-top: 24px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
}

.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: 999px;
  font-weight: 500;
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
}

.section {
  padding: 82px 0;
}

.section-dark {
  background: var(--surface-alt);
}

.lead {
  color: var(--text-secondary);
  font-size: 17px;
}

h1,
h2,
h3,
h4 {
  letter-spacing: -0.02em;
}

h2 {
  margin: 0 0 18px;
  color: var(--text);
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.2;
}

h3 {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 21px;
}

p {
  color: var(--text-secondary);
}

.section-eyebrow {
  margin: 0 0 8px;
  color: #8a8a90;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.intro-block {
  max-width: 900px;
}

.intro-block p:not(.section-eyebrow) {
  font-size: 18px;
}

.section-title-line {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "eyebrow eyebrow"
    "title link";
  align-items: end;
  gap: 6px 10px;
  margin-bottom: 24px;
}

.section-title-line .section-eyebrow {
  grid-area: eyebrow;
  margin-bottom: 0;
}

.section-title-line h2 {
  grid-area: title;
  margin: 0;
}

.section-title-line > a {
  grid-area: link;
  font-weight: 500;
}

.card-grid {
  display: grid;
  gap: 22px;
}

.card-grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid #ececf2;
  border-radius: 22px;
  padding: 18px;
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.04);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.08);
}

.card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 14px;
  margin-bottom: 12px;
}

.card small {
  font-size: 12px;
  color: #fff;
  background: #1d1d1f;
  border-radius: 999px;
  padding: 2px 8px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stat {
  text-align: center;
  padding: 28px 12px;
  border: 1px solid #ececf2;
  background: #fff;
  border-radius: 20px;
}

.stat strong {
  font-size: clamp(32px, 3.3vw, 46px);
  color: var(--text);
  font-weight: 600;
}

.stat em {
  color: var(--success);
  font-style: normal;
  margin-left: 3px;
  font-weight: 600;
}

.stat span {
  display: block;
  margin-top: 8px;
  color: var(--text-secondary);
}

.partners {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.partner-item {
  padding: 14px 10px;
  background: #fff;
  border-radius: 16px;
  border: 1px solid #ececf2;
  text-align: center;
}

.partner-item img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 8px;
}

.partner-item span {
  color: #55555b;
  font-size: 13px;
}

.form-panel {
  max-width: 960px;
}

.form-grid {
  display: grid;
  gap: 12px;
}

input,
textarea,
button,
select,
pre {
  width: 100%;
  padding: 11px 13px;
  border-radius: 12px;
  border: 1px solid #d7d7de;
  background: #fff;
  color: var(--text);
  font-size: 15px;
}

pre {
  white-space: pre-wrap;
  line-height: 1.6;
}

textarea {
  min-height: 130px;
  resize: vertical;
}

button {
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  border: none;
  font-weight: 500;
}

button:hover {
  background: var(--primary-hover);
}

.success {
  color: #0b7f42;
}

.error {
  color: #cf2f2f;
}

.page-hero {
  padding: 88px 0 42px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #ffffff 0%, #f7f7fa 100%);
}

.page-hero h1 {
  margin: 0 0 12px;
  font-size: clamp(34px, 4.2vw, 58px);
  line-height: 1.08;
  color: var(--text);
}

.page-hero p {
  font-size: 18px;
  max-width: 840px;
}

.story-section {
  gap: 30px;
}

.detail-stack {
  display: grid;
  gap: 14px;
}

.detail-block {
  background: #fff;
  border: 1px solid #ececf2;
  border-radius: 18px;
  padding: 18px 18px 12px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
}

.detail-block h2 {
  font-size: 26px;
  margin-bottom: 10px;
}

.split {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
  align-items: start;
}

.split img,
.detail-images img {
  width: 100%;
  border-radius: 16px;
  border: 1px solid #ececf2;
  object-fit: cover;
}

.detail-images {
  display: grid;
  gap: 12px;
  position: sticky;
  top: 92px;
}

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

.timeline-item {
  border-left: 2px solid #d1d1d8;
  background: #fff;
  border-radius: 14px;
  padding: 14px 16px;
  border: 1px solid #ececf2;
}

.timeline-item strong {
  color: #35353a;
}

.filters {
  display: flex;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.filters a {
  padding: 7px 12px;
  border: 1px solid #d8d8de;
  border-radius: 999px;
  color: #5f5f66;
  background: #fff;
}

.filters a.active {
  border-color: #1d1d1f;
  color: #1d1d1f;
}

.pagination {
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.pagination a,
.pagination .disabled {
  border: 1px solid #d8d8de;
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 14px;
  background: #fff;
}

.pagination .disabled {
  color: #b0b0b7;
  background: #f6f6f9;
}

.pagination .page-info {
  color: #66666d;
  font-size: 14px;
}

.news-meta {
  margin: 0 0 8px;
  color: #8a8a90;
  font-size: 13px;
}

.contact-line {
  margin: 0 0 6px;
  color: #3f3f45;
}

.contact-cta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.cta-card {
  background: #fff;
  border: 1px solid #ececf2;
  border-radius: 18px;
  padding: 18px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
}

.cta-card h3 {
  margin: 0 0 10px;
}

.cta-card .btn-primary {
  margin-top: 8px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding-top: 28px;
  background: #fff;
}

.site-footer h4,
.site-footer h5 {
  color: var(--text);
}

.site-footer p {
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr;
  gap: 20px;
}

.footer-brand h4 {
  margin: 4px 0 10px;
}

.footer-contact h5,
.footer-links h5 {
  margin: 4px 0 10px;
}

.legal-bar {
  margin-top: 20px;
  border-top: 1px solid #ececf2;
  padding: 12px 0 18px;
}

.legal-links {
  margin: 0;
  color: #8b8b92;
  font-size: 12px;
  line-height: 1.8;
  text-align: center;
}

.legal-links a {
  color: #6f6f76;
  text-decoration: none;
  transition: color 0.2s ease;
}

.legal-links a:hover {
  color: #1d1d1f;
}

.legal-links span {
  margin: 0 5px;
  color: #b1b1b7;
}

.legal-page {
  max-width: 980px;
}

.legal-content {
  margin: 0;
  white-space: pre-line;
  line-height: 1.8;
}

.sitemap-links {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 14px;
}

.sitemap-links a {
  color: #1d1d1f;
  border: 1px solid #e5e5ea;
  border-radius: 10px;
  padding: 8px 10px;
  background: #fafafd;
}

.sitemap-links a:hover {
  border-color: #c8c8cf;
}

@media (max-width: 1080px) {
  .nav-right {
    align-items: flex-end;
    flex-direction: column;
    gap: 8px;
  }

  nav {
    display: grid;
    grid-template-columns: repeat(3, auto);
    gap: 8px 14px;
  }

  .banner-overlay {
    padding: 34px;
  }

  .hero-footnote {
    margin-top: 18px;
  }

  .banner-card img {
    height: 390px;
  }

  .card-grid.three,
  .card-grid.four,
  .stats,
  .partners,
  .contact-cta-grid,
  .sitemap-links,
  .footer-grid,
  .split {
    grid-template-columns: 1fr 1fr;
  }

  .detail-images {
    position: static;
  }
}

@media (max-width: 680px) {
  .section {
    padding: 56px 0;
  }

  .card-grid.two,
  .card-grid.three,
  .card-grid.four,
  .stats,
  .partners,
  .contact-cta-grid,
  .sitemap-links,
  .footer-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .nav-wrap {
    padding: 8px 0;
  }

  nav {
    grid-template-columns: repeat(2, auto);
  }

  .nav-right {
    align-items: stretch;
  }

  .nav-cta {
    text-align: center;
  }

  .banner-overlay h1 {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-actions {
    gap: 12px;
    flex-wrap: wrap;
  }

  .section-title-line {
    grid-template-columns: 1fr;
    grid-template-areas:
      "eyebrow"
      "title"
      "link";
  }

  .legal-links {
    text-align: left;
  }
}