:root {
  --color-primary: #0d2f5f;
  --color-primary-2: #15457f;
  --color-accent: #d1a95b;
  --color-bg: #f3f6fb;
  --color-surface: #ffffff;
  --color-text: #1f2937;
  --color-text-muted: #5b677a;
  --color-border: #d7deea;
  --max-width: 1200px;
  --radius: 12px;
  --radius-sm: 10px;
  --shadow: 0 10px 30px rgba(13, 47, 95, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(6px);
}

.header-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-2));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 700;
}

.brand-text {
  font-size: 14px;
  line-height: 1.35;
}

.brand-text strong {
  display: block;
  color: var(--color-primary);
  font-size: 15px;
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.main-nav a {
  text-decoration: none;
  font-size: 14px;
  color: #334155;
  padding: 7px 10px;
  border-radius: 999px;
}

.main-nav a.active {
  background: #e8eef8;
  color: var(--color-primary);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch {
  font-size: 12px;
  color: var(--color-text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  padding: 10px 16px;
}

.btn-primary {
  background: linear-gradient(120deg, var(--color-primary), var(--color-primary-2));
  color: #fff;
}

.btn-secondary {
  background: #e8eef8;
  color: var(--color-primary);
}

.menu-toggle {
  display: none;
}

.hero {
  background: linear-gradient(135deg, #09284f, #143f74 70%, #2b5d95 100%);
  color: #fff;
}

.hero-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 72px 20px 64px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
  align-items: center;
}

.hero h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.22;
}

.hero p {
  margin: 16px 0 24px;
  font-size: 17px;
  line-height: 1.7;
  color: #dce7f8;
}

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

.hero-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 10px 36px rgba(2, 12, 25, 0.25);
}

.page-head {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 52px 20px 22px;
}

.page-head h1 {
  margin: 0;
  font-size: clamp(28px, 3vw, 40px);
  color: var(--color-primary);
}

.page-head p {
  margin: 12px 0 0;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 20px 70px;
}

.section {
  margin-top: 28px;
}

.section-title {
  margin: 0;
  color: var(--color-primary);
  font-size: 28px;
}

.section-desc {
  margin: 10px 0 0;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.section-head {
  margin-bottom: 16px;
}

/* Hide wireframe stage labels such as "屏2/屏3" in production pages. */
.section-head > .tag {
  display: none !important;
}

.grid {
  display: grid;
  gap: 18px;
}

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

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

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

.module,
.card,
.stat,
.timeline-item,
.form-shell,
.placeholder-image {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.module,
.card,
.stat,
.timeline-item,
.form-shell {
  padding: 20px;
}

.module h3,
.card h3,
.timeline-item h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.module p,
.card p,
.timeline-item p,
.stat p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.module .tag,
.card .tag,
.section .tag {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--color-primary);
  background: #e8eef8;
  border-radius: 999px;
  padding: 4px 10px;
}

.card-media {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 14px;
  border: 1px solid var(--color-border);
}

.card-media img {
  width: 100%;
  height: auto;
}

.card-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card-list.platforms {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.stat {
  text-align: center;
}

.stat .num {
  margin: 0;
  font-size: 34px;
  color: var(--color-primary);
  font-weight: 800;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 5px;
  height: calc(100% + 2px);
  background: linear-gradient(180deg, var(--color-primary), var(--color-accent));
  border-top-left-radius: var(--radius);
  border-bottom-left-radius: var(--radius);
}

.timeline-item h3 {
  font-size: 17px;
  padding-left: 10px;
}

.timeline-item p {
  font-size: 14px;
  padding-left: 10px;
}

.badge-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.badge {
  background: #f8fbff;
  border: 1px dashed #b5c6dd;
  border-radius: 10px;
  padding: 14px;
  text-align: center;
  color: #38557a;
  font-size: 14px;
  font-weight: 600;
}

.office-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.office-card {
  background: #f8fbff;
  border: 1px solid #ced9ea;
  border-radius: var(--radius-sm);
  padding: 14px;
}

.office-card h4 {
  margin: 0 0 8px;
  color: var(--color-primary);
  font-size: 16px;
}

.office-card p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.7;
  font-size: 14px;
}

.inquiry-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.inquiry-grid.inquiry-grid-single {
  grid-template-columns: 1fr;
}

.form-shell h3 {
  margin: 0 0 10px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.form-group {
  margin-top: 10px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  color: #44556f;
}

.req-mark,
.opt-mark {
  margin-left: 6px;
  font-size: 12px;
  border-radius: 999px;
  padding: 1px 8px;
}

.req-mark {
  color: #b12620;
  background: #ffe9e7;
  border: 1px solid #ffc7c2;
}

.opt-mark {
  color: #496384;
  background: #edf3fb;
  border: 1px solid #d6e2f2;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border: 1px solid #c8d4e7;
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  color: var(--color-text);
  background: #fff;
}

.form-group textarea {
  min-height: 110px;
  resize: vertical;
}

.form-group textarea::placeholder {
  color: #8a97ab;
}

.form-group input.input-error,
.form-group textarea.input-error {
  border-color: #c1322a;
  background: #fff7f7;
}

.form-tip {
  margin-top: 10px;
  font-size: 13px;
  color: #6a7a91;
}

.form-tip.error {
  color: #b12620;
}

.form-tip.success {
  color: #1d6d3a;
}

.inquiry-modal-mask {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(9, 27, 51, 0.45);
  z-index: 9999;
  padding: 16px;
}

.inquiry-modal-mask.open {
  display: flex;
}

.inquiry-modal {
  width: min(420px, 100%);
  border-radius: 14px;
  border: 1px solid #d8e2f1;
  background: #fff;
  box-shadow: 0 20px 48px rgba(12, 35, 67, 0.25);
  padding: 18px 16px;
}

.inquiry-modal-title {
  margin: 0;
  font-size: 18px;
  color: #173a68;
}

.inquiry-modal-body {
  margin: 12px 0 0;
  color: #4f6078;
  line-height: 1.7;
}

.inquiry-modal-actions {
  margin-top: 14px;
  display: flex;
  justify-content: flex-end;
}

.inquiry-modal-actions .btn {
  min-width: 86px;
}

.component-demo {
  background: #eff4fc;
  border: 1px solid #d4dfef;
  border-radius: var(--radius);
  padding: 18px;
}

.component-demo h3 {
  margin: 0 0 12px;
  color: var(--color-primary);
}

.chip-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  border: 1px solid #bfd0e6;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
  color: #2f4f77;
  background: #f7fbff;
}

.chip.active {
  background: #0d2f5f;
  color: #fff;
  border-color: #0d2f5f;
}

.check-list {
  margin: 0;
  padding-left: 18px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 12px;
  color: #61728b;
  margin-bottom: 8px;
}

.news-feed {
  display: grid;
  gap: 14px;
}

.news-item {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 18px;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

.news-item-media {
  display: block;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.news-item-media img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.news-item-body h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.45;
}

.news-item-body h2 a {
  text-decoration: none;
  color: #183e71;
}

.news-item-body h2 a:hover {
  text-decoration: underline;
}

.news-detail {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.news-detail-head h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.3;
  color: var(--color-primary);
}

.news-detail-head .meta {
  margin-top: 10px;
}

.news-detail-cover {
  margin: 16px 0 20px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.news-detail-body p {
  margin: 0 0 12px;
  color: var(--color-text-muted);
  line-height: 1.85;
  font-size: 16px;
}

.news-text-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.news-text-item {
  display: grid;
  grid-template-columns: 140px 1fr 110px;
  gap: 20px;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.news-text-item:last-child {
  border-bottom: none;
}

.news-date {
  color: #60708a;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.news-title {
  margin: 0;
  font-size: 22px;
  line-height: 1.4;
}

.news-title a {
  text-decoration: none;
  color: #163b6e;
}

.news-title a:hover {
  text-decoration: underline;
}

.news-category {
  justify-self: end;
  border: 1px solid #bfd0e6;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  color: #2f4f77;
  background: #f7fbff;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.faq-item {
  border: 1px solid #d4dfef;
  border-radius: 10px;
  background: #f9fbff;
  padding: 14px;
}

.faq-item h4 {
  margin: 0 0 8px;
  color: var(--color-primary);
  font-size: 16px;
}

.faq-item p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.7;
  font-size: 14px;
}

.office-detail {
  border-top: 4px solid #1d4e86;
}

.office-detail h3 {
  margin: 0 0 8px;
}

.mini-form {
  display: flex;
  gap: 10px;
}

.mini-form input {
  flex: 1;
  border: 1px solid #c8d4e7;
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
}

.placeholder-image {
  min-height: 210px;
  padding: 16px;
  display: grid;
  place-content: center;
  text-align: center;
  color: #4b5e79;
  background-image: linear-gradient(135deg, #f8fbff 0%, #edf3fb 100%);
}

.placeholder-image strong {
  font-size: 16px;
  color: var(--color-primary);
}

.placeholder-image span {
  display: block;
  font-size: 13px;
  margin-top: 6px;
}

.site-footer {
  background: #0c213f;
  color: #dde6f6;
}

.footer-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 34px 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
}

.footer-title {
  margin: 0 0 10px;
  color: #fff;
  font-size: 16px;
}

.footer-wrap p,
.footer-wrap li {
  margin: 0;
  color: #c7d6ee;
  line-height: 1.8;
  font-size: 14px;
}

.footer-wrap ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  margin-top: 20px;
  padding-top: 14px;
  font-size: 13px;
  color: #aebede;
}

@media (max-width: 1199px) {
  .header-wrap {
    grid-template-columns: 1fr auto;
  }

  .main-nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .hero-grid,
  .inquiry-grid {
    grid-template-columns: 1fr;
  }

  .split {
    grid-template-columns: 1fr;
  }

  .news-item {
    grid-template-columns: 280px 1fr;
  }

  .news-text-item {
    grid-template-columns: 120px 1fr 100px;
    gap: 14px;
  }

  .news-title {
    font-size: 20px;
  }

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

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

  .office-list,
  .badge-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

}

@media (max-width: 767px) {
  .menu-toggle {
    display: inline-flex;
    border: 1px solid var(--color-border);
    background: #fff;
    border-radius: 8px;
    padding: 7px 10px;
    font-size: 13px;
  }

  .header-wrap {
    grid-template-columns: 1fr auto auto;
  }

  .main-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 10px;
    margin-top: 8px;
  }

  .main-nav.open {
    display: flex;
  }

  .header-actions {
    display: none;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .card-list,
  .card-list.platforms,
  .footer-grid,
  .timeline,
  .office-list,
  .badge-wall,
  .form-row {
    grid-template-columns: 1fr;
  }

  .news-item {
    grid-template-columns: 1fr;
    padding: 12px;
  }

  .news-item-media img {
    height: auto;
  }

  .news-item-body h2 {
    font-size: 20px;
  }

  .news-detail-head h1 {
    font-size: 28px;
  }

  .news-text-item {
    grid-template-columns: 1fr;
    gap: 8px;
    align-items: start;
  }

  .news-category {
    justify-self: start;
  }

  .news-title {
    font-size: 18px;
  }

  .hero-wrap {
    padding-top: 58px;
  }

  .section-title {
    font-size: 24px;
  }

  .mini-form {
    flex-direction: column;
  }
}