:root {
  --ink: #19202a;
  --muted: #5d6675;
  --line: #dde3ea;
  --paper: #ffffff;
  --soft: #f5f7f9;
  --navy: #10243f;
  --red: #a93435;
  --gold: #c99841;
  --shadow: 0 18px 50px rgba(16, 36, 63, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Segoe UI", Arial, "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.header-inner {
  min-height: 78px;
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-weight: 800;
  line-height: 1.15;
  color: var(--navy);
}

.brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.brand span {
  max-width: 230px;
}

.site-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  border-radius: 6px;
  padding: 10px 14px;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.94rem;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--navy);
  background: #eef2f6;
}

.header-actions {
  position: relative;
  justify-self: end;
}

.language-button,
.nav-toggle {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--navy);
  cursor: pointer;
}

.language-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 800;
}

.language-button img,
.language-menu img {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
}

.language-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 160px;
  display: none;
  padding: 8px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.language-menu.open {
  display: grid;
  gap: 4px;
}

.language-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  border-radius: 6px;
  padding: 9px;
  color: var(--muted);
  font-weight: 700;
}

.language-menu a:hover {
  color: var(--navy);
  background: var(--soft);
}

.nav-toggle {
  width: 44px;
  height: 44px;
  display: none;
  place-items: center;
  border-radius: 8px;
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  display: block;
  margin: 3px 0;
  background: var(--navy);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 8vw, 104px) 0;
  background:
    linear-gradient(110deg, rgba(16, 36, 63, 0.96), rgba(16, 36, 63, 0.72)),
    url("../images/slider_bg.jpg") center / cover;
  color: #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: clamp(28px, 5vw, 62px);
  align-items: center;
}

.hero-copy h1,
.page-hero h1,
.split h2,
.band-inner h2 {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.08;
}

.hero-copy h1 {
  max-width: 780px;
  font-size: clamp(2.45rem, 5vw, 4.7rem);
}

.lead {
  max-width: 650px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(1.04rem, 1.7vw, 1.24rem);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--gold);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  padding: 12px 18px;
  font-weight: 800;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: #fff;
  background: var(--red);
}

.button.ghost {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.42);
}

.button.light {
  color: var(--navy);
  background: #fff;
}

.hero-media {
  display: grid;
  gap: 18px;
}

.hero-banner {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 8px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.stat-row span {
  min-height: 92px;
  display: grid;
  align-content: center;
  padding: 18px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.11);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
}

.stat-row strong {
  display: block;
  color: #fff;
  font-size: 1.8rem;
  line-height: 1;
}

.section {
  padding: clamp(54px, 7vw, 90px) 0;
}

.section.muted {
  background: var(--soft);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(260px, 0.7fr);
  gap: 38px;
  align-items: end;
  margin-bottom: 30px;
}

.split h2,
.band-inner h2 {
  font-size: clamp(2rem, 3.2vw, 3rem);
}

.split > p,
.prose p {
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
}

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

.feature-card,
.activity-card,
.contact-panel,
.contact-form {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 10px 30px rgba(16, 36, 63, 0.06);
}

.feature-card {
  padding: 26px;
}

.feature-mark {
  display: inline-block;
  margin-bottom: 22px;
  color: var(--red);
  font-weight: 900;
}

.feature-card h3,
.activity-card h2,
.contact-panel h2 {
  margin: 0 0 10px;
  color: var(--navy);
  line-height: 1.2;
}

.feature-card p,
.activity-card p,
.contact-panel p {
  margin: 0;
  color: var(--muted);
}

.image-band {
  background:
    linear-gradient(90deg, rgba(16, 36, 63, 0.94), rgba(169, 52, 53, 0.82)),
    url("../images/title.jpg") center / cover;
  color: #fff;
}

.band-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.page-hero {
  padding: clamp(58px, 7vw, 92px) 0;
  color: #fff;
  background:
    linear-gradient(110deg, rgba(16, 36, 63, 0.95), rgba(16, 36, 63, 0.66)),
    url("../images/slider_bg1.jpg") center / cover;
}

.page-hero h1 {
  max-width: 860px;
  font-size: clamp(2.2rem, 4vw, 4rem);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  gap: clamp(28px, 5vw, 58px);
  align-items: start;
}

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

.content-image {
  width: 100%;
  min-height: 320px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.activity-card {
  overflow: hidden;
}

.activity-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.activity-card div {
  padding: 22px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1fr);
  gap: 22px;
}

.contact-panel,
.contact-form {
  padding: clamp(22px, 4vw, 34px);
}

.contact-panel a {
  display: inline-block;
  margin-top: 12px;
  color: var(--red);
  font-weight: 800;
}

.qr-block {
  width: 148px;
  margin-top: 32px;
  color: var(--muted);
  font-weight: 800;
  text-align: center;
}

.qr-block img {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: #fff;
}

.contact-form {
  display: grid;
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: var(--navy);
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #cfd7e2;
  border-radius: 7px;
  padding: 12px 13px;
  color: var(--ink);
  font: inherit;
}

.contact-form textarea {
  resize: vertical;
}

.site-footer {
  color: rgba(255, 255, 255, 0.76);
  background: #0d1829;
}

.footer-inner {
  min-height: 94px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  color: #fff;
  font-weight: 800;
}

@media (max-width: 900px) {
  .header-inner {
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 8px;
  }

  .nav-toggle {
    display: grid;
    justify-self: end;
  }

  .header-actions {
    justify-self: start;
  }

  .site-nav {
    position: absolute;
    top: 78px;
    right: 54px;
    width: min(210px, calc(100vw - 28px));
    display: none;
    padding: 8px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: grid;
    gap: 6px;
  }

  .site-nav a {
    padding: 13px 12px;
  }

  .hero-grid,
  .split,
  .content-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .header-inner {
    min-height: 70px;
    gap: 10px;
  }

  .brand span {
    max-width: 150px;
    font-size: 0.86rem;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .language-button {
    padding: 8px 10px;
  }

  .language-button span {
    display: none;
  }

  .site-nav {
    top: 62px;
    right: 54px;
  }

  .hero {
    padding: 42px 0 52px;
  }

  .hero-copy h1 {
    font-size: 2.2rem;
  }

  .hero-actions,
  .band-inner,
  .footer-inner {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .stat-row,
  .feature-grid,
  .activity-grid {
    grid-template-columns: 1fr;
  }

  .stat-row span {
    min-height: auto;
  }

  .hero-banner {
    min-height: 122px;
    object-fit: cover;
    object-position: center;
  }

  .page-hero h1 {
    font-size: 2.05rem;
  }
}