/* v体育 — 高端运动装备制造企业首页 */

:root {
  --bg: #0b0f14;
  --bg-elev: #121826;
  --panel: rgba(255, 255, 255, 0.06);
  --stroke: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.66);
  --faint: rgba(255, 255, 255, 0.48);
  --gold: #d6b36a;
  --gold-2: #b8924a;
  --accent: #7ee0c5;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.55);
  --radius: 16px;
  --radius-sm: 12px;
  --container: 1120px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 12% -10%, rgba(214, 179, 106, 0.18), transparent 60%),
    radial-gradient(900px 600px at 90% 10%, rgba(126, 224, 197, 0.12), transparent 55%),
    linear-gradient(180deg, #070a0f, var(--bg) 38%, #070a0f 100%);
  line-height: 1.65;
  letter-spacing: 0.01em;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  padding: 0.75rem 1rem;
  background: #fff;
  color: #000;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.narrow {
  width: min(100% - 40px, 820px);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(7, 10, 15, 0.72);
  border-bottom: 1px solid var(--stroke);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  font-weight: 750;
  letter-spacing: 0.06em;
  text-decoration: none;
  font-size: 1.05rem;
}

.brand::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-left: 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--gold), var(--accent));
  vertical-align: middle;
  transform: translateY(-1px);
}

.site-nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

.site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  padding: 8px 10px;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.site-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.mobile-menu {
  display: none;
}

.mobile-menu > summary {
  list-style: none;
}

.mobile-menu > summary::-webkit-details-marker {
  display: none;
}

.mobile-menu-btn {
  cursor: pointer;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 0.9rem;
}

.mobile-nav {
  position: absolute;
  left: 20px;
  right: 20px;
  top: 64px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 10px;
  margin: 10px 0 0;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background: rgba(7, 10, 15, 0.92);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.mobile-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
  padding: 12px 12px;
  border-radius: 12px;
}

.mobile-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

/* Hero */

.hero {
  padding: clamp(48px, 6vw, 96px) 0 clamp(40px, 5vw, 72px);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(1.75rem, 3.6vw, 2.55rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.lead {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 1.05rem;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 650;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  color: #0b0f14;
  background: linear-gradient(135deg, var(--gold), var(--gold-2));
  box-shadow: 0 14px 40px rgba(214, 179, 106, 0.22);
}

.btn-primary:hover {
  box-shadow: 0 18px 55px rgba(214, 179, 106, 0.30);
}

.btn-ghost {
  color: var(--text);
  border-color: var(--stroke);
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost:hover {
  border-color: rgba(214, 179, 106, 0.55);
}

.hero-media {
  margin: 0;
  border-radius: calc(var(--radius) + 6px);
  overflow: hidden;
  border: 1px solid var(--stroke);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.05);
}

.hero-media figcaption {
  padding: 14px 16px;
  color: var(--muted);
  font-size: 0.92rem;
  border-top: 1px solid var(--stroke);
  background: rgba(0, 0, 0, 0.18);
}

/* Sections */

.section {
  padding: clamp(44px, 6vw, 84px) 0;
}

.section-head {
  margin-bottom: 26px;
}

.section-head h2 {
  margin: 0 0 10px;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  letter-spacing: -0.015em;
}

.section-head p {
  margin: 0;
  color: var(--muted);
}

.about {
  border-top: 1px solid var(--stroke);
  border-bottom: 1px solid var(--stroke);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 38%);
}

.prose p {
  margin: 0 0 16px;
  color: rgba(255, 255, 255, 0.86);
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose strong {
  color: var(--text);
  font-weight: 700;
}

/* Features */

.feature-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-grid li {
  padding: 18px 18px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
}

.feature-grid h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.feature-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Gallery */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

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

.card-title {
  margin: 14px 16px 6px;
  font-size: 1.05rem;
}

.card-meta {
  margin: 0 16px 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

.kw {
  color: rgba(255, 255, 255, 0.78);
}

/* Video */

.video-spotlight {
  border-top: 1px solid var(--stroke);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.video-card {
  border-radius: var(--radius);
  border: 1px solid var(--stroke);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.03);
}

.video-thumb {
  display: block;
  text-decoration: none;
  color: inherit;
}

.video-thumb-inner {
  position: relative;
  display: block;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transform: scale(1.001);
  transition: transform 0.35s ease;
}

.video-thumb:hover img {
  transform: scale(1.03);
}

.video-play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(closest-side, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.35));
}

.video-play::before {
  content: "";
  width: 58px;
  height: 58px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(8px);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
}

.video-play::after {
  content: "";
  position: absolute;
  width: 0;
  height: 0;
  border-left: 16px solid rgba(255, 255, 255, 0.92);
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  transform: translateX(3px);
  filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.45));
}

.video-duration {
  position: absolute;
  right: 12px;
  bottom: 12px;
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.95);
  background: rgba(7, 10, 15, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(10px);
}

.video-body {
  padding: 16px 16px 18px;
}

.video-name {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.video-desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* CTA */

.cta {
  padding-bottom: clamp(52px, 7vw, 96px);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 22px;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid rgba(214, 179, 106, 0.28);
  background:
    radial-gradient(700px 260px at 10% 0%, rgba(214, 179, 106, 0.16), transparent 60%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  box-shadow: var(--shadow);
}

.cta-inner h2 {
  margin: 0 0 8px;
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
}

.cta-inner p {
  margin: 0;
  color: var(--muted);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--stroke);
  padding: 28px 0 18px;
  background: rgba(0, 0, 0, 0.22);
}

.footer-grid {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.foot-brand {
  font-weight: 750;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.muted {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
  padding: 8px 10px;
  border-radius: 999px;
}

.footer-links a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.fineprint {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.fineprint p {
  margin: 0;
  color: var(--faint);
  font-size: 0.85rem;
}

/* Responsive */

@media (max-width: 980px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

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

@media (max-width: 720px) {
  .desktop-nav {
    display: none;
  }

  .mobile-menu {
    display: block;
  }

  .header-inner {
    position: relative;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .video-thumb img,
  .btn {
    transition: none;
  }

  .video-thumb:hover img {
    transform: none;
  }
}