/* 开云体育官方网站 - kaiyunsportofficial.com */
:root {
  --bg: #06140f;
  --bg-elevated: #0c2219;
  --bg-soft: #123328;
  --line: rgba(168, 230, 190, 0.16);
  --text: #eef8f2;
  --muted: #a7c4b5;
  --brand: #1dbf73;
  --brand-deep: #0f8f52;
  --accent: #e4c15a;
  --danger: #ff6b6b;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --container: 1120px;
  --font-display: "Saira Condensed", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(29, 191, 115, 0.18), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(228, 193, 90, 0.08), transparent 55%),
    linear-gradient(180deg, #071a13 0%, var(--bg) 40%, #04100c 100%);
  min-height: 100vh;
  line-height: 1.75;
  font-size: 16px;
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

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

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  background: rgba(6, 20, 15, 0.88);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  object-fit: cover;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-size: 1.15rem;
}

.brand-text span {
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.12em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav a {
  color: var(--muted);
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  font-size: 0.95rem;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  background: rgba(29, 191, 115, 0.12);
}

.nav-cta {
  display: flex;
  gap: 0.5rem;
  margin-left: 0.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  color: #04110c;
}

.btn-primary:hover {
  color: #04110c;
}

.btn-outline {
  border-color: rgba(29, 191, 115, 0.45);
  color: var(--text);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: min(92vh, 820px);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.03);
  animation: heroZoom 18s ease-in-out infinite alternate;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(4, 16, 12, 0.92) 0%, rgba(4, 16, 12, 0.72) 48%, rgba(4, 16, 12, 0.35) 100%),
    linear-gradient(180deg, rgba(4, 16, 12, 0.2) 0%, rgba(4, 16, 12, 0.88) 100%);
}

.hero-content {
  padding: 7rem 0 4.5rem;
  max-width: 680px;
}

.hero-kicker {
  display: inline-block;
  color: var(--accent);
  font-family: var(--font-display);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
  animation: fadeUp 0.8s ease both;
}

.hero h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  font-weight: 700;
  animation: fadeUp 0.9s ease 0.08s both;
}

.hero h1 em {
  font-style: normal;
  color: var(--brand);
}

.hero-lead {
  margin: 0 0 1.8rem;
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 34rem;
  animation: fadeUp 1s ease 0.16s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  animation: fadeUp 1.1s ease 0.24s both;
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background: linear-gradient(180deg, rgba(18, 51, 40, 0.35), transparent);
  border-block: 1px solid var(--line);
}

.section-head {
  margin-bottom: 2rem;
  max-width: 720px;
}

.section-head h2 {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: 0.03em;
  line-height: 1.15;
}

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

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feature-block {
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.feature-block h3 {
  margin: 0 0 0.6rem;
  font-size: 1.2rem;
}

.feature-block p {
  margin: 0;
  color: var(--muted);
}

.media-row {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: center;
}

.media-frame {
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: var(--bg-elevated);
}

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

.category-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.category-item {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  min-height: 180px;
  border: 1px solid var(--line);
}

.category-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.category-item:hover img {
  transform: scale(1.06);
}

.category-item span {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.78));
  font-weight: 700;
  font-family: var(--font-display);
  letter-spacing: 0.06em;
}

.logo-wall {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
}

.logo-wall.partners {
  grid-template-columns: repeat(4, 1fr);
}

.logo-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 96px;
}

.logo-item img {
  max-height: 64px;
  width: auto;
  object-fit: contain;
  filter: brightness(1.05);
}

.prose {
  color: var(--muted);
}

.prose h2,
.prose h3 {
  color: var(--text);
  font-family: var(--font-display);
  letter-spacing: 0.02em;
}

.prose h2 {
  margin-top: 2.2rem;
  font-size: 1.7rem;
}

.prose h3 {
  margin-top: 1.6rem;
  font-size: 1.25rem;
}

.prose p {
  margin: 0.85rem 0;
}

.prose ul,
.prose ol {
  padding-left: 1.2rem;
}

.prose li {
  margin: 0.45rem 0;
}

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

.faq details {
  border-top: 1px solid var(--line);
  padding: 1rem 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq details p {
  margin: 0.7rem 0 0;
  color: var(--muted);
}

.page-hero {
  padding: 4rem 0 2rem;
  border-bottom: 1px solid var(--line);
}

.page-hero h1 {
  margin: 0 0 0.8rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.03em;
}

.page-hero p {
  margin: 0;
  color: var(--muted);
  max-width: 46rem;
}

.auth-layout {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 2rem;
  align-items: start;
  padding: 2.5rem 0 4rem;
}

.auth-panel {
  background: rgba(12, 34, 25, 0.85);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.6rem;
  box-shadow: var(--shadow);
}

.auth-panel h2 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.auth-panel .sub {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.form-group input {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
  font: inherit;
}

.form-group input:focus {
  outline: 2px solid rgba(29, 191, 115, 0.35);
  border-color: var(--brand);
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.form-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 4rem 1rem;
}

.error-page .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 14vw, 8rem);
  line-height: 1;
  color: var(--brand);
  margin: 0;
}

.error-page h1 {
  margin: 0.4rem 0 0.8rem;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.error-page p {
  color: var(--muted);
  max-width: 34rem;
  margin: 0 auto 1.5rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  background: #040f0c;
  padding: 3rem 0 2rem;
  margin-top: 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 1.5rem;
}

.site-footer h3 {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  font-size: 1.05rem;
}

.site-footer p,
.site-footer a {
  color: var(--muted);
}

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

.site-footer li {
  margin: 0.45rem 0;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
}

.breadcrumb {
  padding: 1rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.breadcrumb a {
  color: var(--muted);
}

.breadcrumb span {
  margin: 0 0.4rem;
  opacity: 0.6;
}

.cta-band {
  margin: 1rem 0 0;
  padding: 2rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(29, 191, 115, 0.16), rgba(228, 193, 90, 0.08)),
    var(--bg-elevated);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.cta-band h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  letter-spacing: 0.03em;
}

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

.steps {
  counter-reset: step;
  display: grid;
  gap: 1rem;
}

.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroZoom {
  from {
    transform: scale(1.03);
  }
  to {
    transform: scale(1.1);
  }
}

@media (max-width: 960px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav {
    position: fixed;
    inset: 72px 0 auto 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding: 1rem;
    background: rgba(6, 20, 15, 0.97);
    border-bottom: 1px solid var(--line);
  }

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

  .nav a {
    padding: 0.85rem 1rem;
    border-radius: 12px;
  }

  .nav-cta {
    margin: 0.5rem 0 0;
    flex-direction: column;
  }

  .grid-3,
  .grid-2,
  .media-row,
  .category-rail,
  .logo-wall,
  .logo-wall.partners,
  .footer-grid,
  .auth-layout {
    grid-template-columns: 1fr;
  }

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

  .hero-content {
    padding-top: 5.5rem;
  }
}

@media (max-width: 560px) {
  .brand-text span {
    display: none;
  }

  .category-rail {
    grid-template-columns: 1fr;
  }
}

/* Top ads bar */
.ads-bar {
  position: relative;
  z-index: 20;
  background: rgba(8, 28, 20, 0.96);
  border-bottom: 1px solid var(--line);
  padding: 0.65rem 0 0.45rem;
}

#ads {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.35rem 0.55rem;
  background: transparent;
  margin: 0;
  min-height: 0;
}

#ads:empty {
  display: none;
}

#ads > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 70px;
  box-sizing: border-box;
}

#ads figure {
  margin: 0;
}

#ads img {
  width: 65px;
  height: 65px;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
  transition: transform 180ms ease, box-shadow 180ms ease;
  display: block;
  border: none;
  background: linear-gradient(135deg, #fff, #fff);
}

#ads a {
  display: inline-block;
  text-decoration: none;
  border-radius: 15px;
}

#ads img:hover {
  transform: translateY(-4px) scale(1.04);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

#ads figcaption,
#ads .caption {
  height: 15px;
  margin-top: 4px;
  font-size: 11px;
  color: #b7d0c3;
  text-align: center;
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}