:root {
  --color-primary: #1d482d;
  --color-primary-dark: #132f1f;
  --color-secondary: #efb344;
  --color-secondary-dark: #d99a2f;
  --color-surface: #ffffff;
  --color-muted: #6b7a71;
  --color-bg: #0a140f;
  --color-border: rgba(255, 255, 255, 0.08);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.18);
  --shadow-card: 0 18px 36px rgba(29, 72, 45, 0.32);
  --max-width: 1200px;
  color-scheme: light;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: rgba(255, 255, 255, 0.88);
  background: var(--color-bg);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

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

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

a:hover,
a:focus-visible {
  color: var(--color-secondary);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 20, 15, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
}

.logo {
  display: flex;
  flex-direction: column;
  font-family: "Orbitron", "Inter", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  line-height: 1.1;
}

.logo__accent {
  font-size: 0.9rem;
  color: var(--color-secondary-dark);
}

.logo__primary {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-secondary);
}

.logo__tagline {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
}

.site-nav ul {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.4rem;
  cursor: pointer;
}

.nav-toggle__bar,
.nav-toggle__bar::before,
.nav-toggle__bar::after {
  display: block;
  width: 24px;
  height: 2px;
  background: rgba(255, 255, 255, 0.9);
  position: relative;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__bar::before {
  top: -7px;
}

.nav-toggle__bar::after {
  top: 7px;
}

.cta-button {
  padding: 0.75rem 1.5rem;
  background: var(--color-secondary);
  color: var(--color-primary-dark);
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.08em;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(239, 179, 68, 0.4);
}

.hero-background {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(29, 72, 45, 0.55), transparent 45%),
    radial-gradient(circle at bottom right, rgba(239, 179, 68, 0.45), transparent 40%),
    radial-gradient(circle at center, rgba(19, 47, 31, 0.65), rgba(10, 20, 15, 0.95) 70%);
  z-index: -2;
}

.hero {
  padding: clamp(6rem, 12vw, 10rem) 0 clamp(4rem, 8vw, 6rem);
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 10% 5%;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  pointer-events: none;
}

.hero .container {
  display: grid;
  gap: 3rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.hero__content h1 {
  font-family: "Orbitron", "Inter", sans-serif;
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  margin: 0.25rem 0 1.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__content .lead {
  max-width: 28rem;
  color: rgba(255, 255, 255, 0.78);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.button--primary {
  background: var(--color-secondary);
  color: var(--color-primary-dark);
  border-color: var(--color-secondary);
}

.button--primary:hover {
  box-shadow: 0 12px 30px rgba(239, 179, 68, 0.4);
  transform: translateY(-2px);
}

.button--ghost {
  background: transparent;
  color: rgba(255, 255, 255, 0.88);
  border-color: rgba(255, 255, 255, 0.36);
}

.button--ghost:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-weight: 600;
  color: rgba(239, 179, 68, 0.8);
  font-size: 0.75rem;
  margin-bottom: 0.85rem;
}

.hero-stats {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  background: rgba(19, 47, 31, 0.35);
  backdrop-filter: blur(6px);
  margin: 2rem 0 0;
}

.hero-stats dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.6);
}

.hero-stats dd {
  margin: 0.35rem 0 0;
  font-size: 1.3rem;
  font-weight: 600;
  color: #fff;
}

.hero__visual {
  position: relative;
  min-height: 360px;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.hero__orb {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(239, 179, 68, 0.9), rgba(29, 72, 45, 0.4));
  box-shadow: 0 0 60px rgba(239, 179, 68, 0.5);
  animation: pulse 8s infinite;
}

.hero__ring {
  position: absolute;
  border: 1px solid rgba(239, 179, 68, 0.35);
  border-radius: 50%;
  animation: rotate 14s linear infinite;
}

.hero__ring--1 {
  width: 320px;
  height: 320px;
}

.hero__ring--2 {
  width: 420px;
  height: 420px;
  animation-duration: 18s;
}

.hero__diagram {
  position: absolute;
  inset: 35% 10% auto;
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  font-family: "Orbitron", "Inter", sans-serif;
}

.diagram-label::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 0.45rem;
  border-radius: 50%;
  background: var(--color-secondary);
  vertical-align: middle;
}

.section {
  padding: clamp(4rem, 9vw, 6rem) 0;
}

.section--accent {
  background: linear-gradient(180deg, rgba(29, 72, 45, 0.28), rgba(12, 24, 18, 0.92));
}

.section--dark {
  background: linear-gradient(180deg, rgba(12, 24, 18, 0.96), rgba(6, 12, 9, 1));
}

.section__intro h2 {
  font-family: "Orbitron", "Inter", sans-serif;
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 0 0 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.section__intro p {
  max-width: 46rem;
  color: rgba(255, 255, 255, 0.78);
}

.grid {
  display: grid;
  gap: 2rem;
}

.grid--three {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: rgba(12, 24, 18, 0.75);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-soft);
}

.card h3 {
  font-family: "Orbitron", "Inter", sans-serif;
  text-transform: uppercase;
  font-size: 1.2rem;
  margin-top: 0;
  letter-spacing: 0.12em;
  color: var(--color-secondary);
}

.timeline {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 3rem;
}

.timeline__card {
  background: rgba(10, 20, 15, 0.85);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.timeline__card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(239, 179, 68, 0.12);
  pointer-events: none;
}

.timeline__date {
  display: inline-flex;
  padding: 0.35rem 0.75rem;
  background: rgba(239, 179, 68, 0.12);
  color: var(--color-secondary);
  border-radius: 999px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.timeline__card h3 {
  margin: 0 0 0.75rem;
  font-family: "Orbitron", "Inter", sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
}

.live-feed {
  margin-top: 3rem;
  background: rgba(10, 20, 15, 0.92);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 4vw, 3rem);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-card);
}

.feed-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.feed-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  justify-items: center;
}

.feed-card {
  background: rgba(12, 24, 18, 0.78);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  min-height: 320px;
}

.feed-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.feed-card__body {
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.feed-card__caption {
  flex: 1;
  color: rgba(255, 255, 255, 0.78);
  margin: 0 0 1rem;
  font-size: 0.95rem;
}

.feed-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.54);
}

.instagram-media {
  width: 100% !important;
  max-width: 540px !important;
  border-radius: var(--radius-md) !important;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  background: rgba(12, 24, 18, 0.6) !important;
  box-shadow: var(--shadow-soft);
}

.feed-note {
  margin-top: 1.25rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  text-align: center;
}

.feed-placeholder {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2rem;
  border-radius: var(--radius-md);
  border: 1px dashed rgba(239, 179, 68, 0.5);
  background: rgba(239, 179, 68, 0.12);
  color: rgba(255, 255, 255, 0.8);
}

.feed-placeholder__tip {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
}

.section--dark .section__intro p {
  color: rgba(255, 255, 255, 0.78);
}

.media-grid {
  display: grid;
  gap: 2.5rem;
}

.media-feature {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
  background: rgba(12, 24, 18, 0.75);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-card);
  padding: clamp(1.5rem, 3vw, 2.5rem);
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.video-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.media-feature__content h3 {
  margin: 0 0 1rem;
  font-family: "Orbitron", "Inter", sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
}

.gallery-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.gallery-slot {
  border: 1px dashed rgba(239, 179, 68, 0.4);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  background: rgba(239, 179, 68, 0.08);
  text-align: center;
  color: rgba(255, 255, 255, 0.75);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1rem;
}

.gallery-slot__canvas {
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  background-color: rgba(12, 24, 18, 0.7);
  background-image: repeating-linear-gradient(
      45deg,
      rgba(239, 179, 68, 0.32),
      rgba(239, 179, 68, 0.32) 10px,
      rgba(239, 179, 68, 0.12) 10px,
      rgba(239, 179, 68, 0.12) 20px
    );
  background-size: var(--gallery-size, cover);
  background-position: var(--gallery-position, center);
  background-repeat: no-repeat;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.gallery-slot__canvas::after {
  content: attr(data-status);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  opacity: 0.6;
}

.gallery-slot figcaption {
  margin-top: 0.85rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sponsor-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: stretch;
  margin-top: 2.5rem;
}

.sponsor-card {
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(12, 24, 18, 0.78);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.sponsor-card__media {
  width: min(100%, 220px);
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: rgba(12, 24, 18, 0.85);
  border: 1px solid rgba(239, 179, 68, 0.32);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.25);
}
.sponsor-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain; /* 显示完整图像，不裁剪 */
}

.sponsor-card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  background: rgba(10, 20, 15, 0.95);
}

.sponsor-card__label {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.58);
}

.sponsor-card__caption {
  margin: 0;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.68);
  line-height: 1.5;
}

.sponsor-card--cta {
  background: linear-gradient(135deg, rgba(239, 179, 68, 0.22), rgba(29, 72, 45, 0.65));
  border-color: rgba(239, 179, 68, 0.38);
  align-items: center;
}

.sponsor-card--cta h3 {
  font-family: "Orbitron", "Inter", sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0;
}

.contact-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: start;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  gap: 1.25rem;
}

.contact-label {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: rgba(239, 179, 68, 0.8);
  margin-bottom: 0.4rem;
}

.map-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(12, 24, 18, 0.85);
  box-shadow: var(--shadow-card);
}

.map-wrapper iframe {
  display: block;
  width: 100%;
  min-height: 320px;
  border: 0;
}

.map-note {
  margin: 0;
  padding: 1rem 1.25rem;
  background: rgba(239, 179, 68, 0.12);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.85rem;
  border-top: 1px solid rgba(239, 179, 68, 0.3);
}

.site-footer {
  padding: 2rem 0 2.5rem;
  background: rgba(6, 12, 9, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  color: rgba(255, 255, 255, 0.58);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-weight: 500;
  letter-spacing: 0.04em;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.9;
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@media (max-width: 960px) {
  .site-nav ul {
    position: absolute;
    top: 100%;
    right: 5%;
    left: 5%;
    flex-direction: column;
    background: rgba(10, 20, 15, 0.95);
    border-radius: var(--radius-md);
    padding: 1rem 0;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-soft);
    transform-origin: top right;
    transform: scaleY(0);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .site-nav ul.is-open {
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .cta-button {
    display: none;
  }
}

@media (max-width: 720px) {
  .hero::before {
    inset: 5% 4%;
  }

  .hero__diagram {
    font-size: 0.65rem;
  }

  .media-feature {
    grid-template-columns: 1fr;
  }

  .feed-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }
}

@media (max-width: 480px) {
  body {
    font-size: 0.95rem;
  }

  .hero__ring--1 {
    width: 260px;
    height: 260px;
  }

  .hero__ring--2 {
    width: 320px;
    height: 320px;
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .feed-controls {
    flex-direction: column;
    align-items: stretch;
  }
}