:root {
  --sk-primary: #0A1A2F;
  --sk-secondary: #1E3A5F;
  --sk-accent: #FF5A1F;
  --sk-accent-soft: #FFB347;
  --sk-azure: #3B82F6;
  --sk-ice: #F8FAFC;
  --sk-mist: #E2E8F0;
  --sk-steel: #475569;
  --sk-ink: #0B1120;
  --sk-blue-gradient: linear-gradient(135deg, #0A1A2F 0%, #1E3A5F 100%);
  --sk-orange-gradient: linear-gradient(135deg, #FF5A1F 0%, #FFB347 100%);
  --sk-serif: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
  --sk-body: 'Noto Sans SC', 'Source Han Sans SC', system-ui, sans-serif;
  --sk-max-width: 1440px;
  --sk-radius: 14px;
  --sk-header-h: 128px;
  --sk-pulse-h: 28px;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--sk-body);
  font-size: 17px;
  line-height: 1.8;
  color: var(--sk-ink);
  background: var(--sk-ice);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body,
#main-content {
  flex: 1 0 auto;
}

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

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

button {
  font-family: inherit;
  font-size: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 3px solid var(--sk-azure);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.18);
}

.skip-fix:focus,
.sk-skip:focus {
  outline: 3px solid var(--sk-accent);
}

/* ===== 容器 ===== */
.sk-container {
  width: 100%;
  max-width: var(--sk-max-width);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 72px);
}

.sk-section {
  margin: 0 auto;
  padding: clamp(48px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.sk-section-tight {
  padding: clamp(28px, 4vw, 56px) clamp(20px, 5vw, 72px);
}

/* ===== 通用眉题 / 标签 ===== */
.sk-eyebrow {
  font-family: var(--sk-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sk-azure);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.sk-eyebrow::before {
  content: "";
  width: 24px;
  height: 3px;
  background: var(--sk-orange-gradient);
  border-radius: 99px;
  flex: 0 0 auto;
}

.sk-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 999px;
  border: 1px solid var(--sk-mist);
  background: rgba(248, 250, 252, 0.8);
  color: var(--sk-steel);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.sk-label[data-accent] {
  border-color: transparent;
  background: linear-gradient(135deg, rgba(255, 90, 31, 0.16), rgba(255, 179, 71, 0.24));
  color: var(--sk-accent);
}

.sk-critical {
  font-weight: 900;
  font-family: var(--sk-serif);
  background: var(--sk-orange-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===== 标题排版 ===== */
.sk-title-serif {
  font-family: var(--sk-serif);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.sk-title-display {
  font-size: clamp(44px, 7.2vw, 88px);
}

.sk-title-large {
  font-size: clamp(34px, 5vw, 60px);
}

.sk-title-medium {
  font-size: clamp(26px, 3.4vw, 40px);
}

.sk-deco-text {
  font-family: var(--sk-serif);
  font-weight: 900;
  line-height: 1;
  font-size: clamp(72px, 12vw, 150px);
  color: transparent;
  -webkit-text-stroke: 1px rgba(30, 58, 95, 0.22);
  user-select: none;
  pointer-events: none;
}

/* ===== 通用按钮 ===== */
.sk-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  min-height: 48px;
  background: var(--sk-ice);
  border: 1px solid var(--sk-mist);
  color: var(--sk-primary);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.sk-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 24px -8px rgba(10, 26, 47, 0.18);
}

.sk-button-accent {
  background: var(--sk-orange-gradient);
  color: var(--sk-ice);
  border: none;
  box-shadow: 0 10px 22px -8px rgba(255, 90, 31, 0.4);
}

.sk-button-accent:hover {
  box-shadow: 0 16px 30px -8px rgba(255, 90, 31, 0.5);
}

.sk-button-ghost {
  background: transparent;
  border: 1px solid rgba(248, 250, 252, 0.4);
  color: var(--sk-ice);
}

.sk-button-ghost:hover {
  background: rgba(248, 250, 252, 0.1);
  border-color: rgba(248, 250, 252, 0.8);
}

/* ===== 通用卡片 ===== */
.sk-card {
  position: relative;
  background: var(--sk-ice);
  border: 1px solid var(--sk-mist);
  border-radius: var(--sk-radius);
  padding: clamp(24px, 3.5vw, 36px);
  box-shadow: 0 8px 24px -12px rgba(10, 26, 47, 0.1);
  overflow: hidden;
}

.sk-card::before {
  content: "";
  display: block;
  height: 4px;
  background: var(--sk-orange-gradient);
  border-radius: var(--sk-radius) var(--sk-radius) 0 0;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  opacity: 0.9;
}

.sk-card-media {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background:
    radial-gradient(circle at 28% 20%, rgba(59, 130, 246, 0.28), transparent 48%),
    radial-gradient(circle at 72% 80%, rgba(255, 90, 31, 0.22), transparent 52%),
    linear-gradient(135deg, #1E3A5F, #0A1A2F);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(248, 250, 252, 0.75);
  font-size: 13px;
  letter-spacing: 0.16em;
}

.sk-card-media::after {
  content: "B";
  position: absolute;
  font-family: var(--sk-serif);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 56px);
  color: rgba(248, 250, 252, 0.22);
  width: 100%;
  text-align: center;
  letter-spacing: 0.2em;
}

.sk-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
  background: var(--sk-blue-gradient);
  border-radius: var(--sk-radius);
  color: rgba(248, 250, 252, 0.55);
  font-size: 14px;
  letter-spacing: 0.12em;
  position: relative;
  overflow: hidden;
}

.sk-placeholder::before,
.sk-placeholder::after {
  content: "";
  position: absolute;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.14), transparent);
  width: 120px;
  height: 2px;
  top: 40%;
}

.sk-placeholder::after {
  top: 60%;
  left: 30%;
}

/* ===== 通用网格 ===== */
.sk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(16px, 2.6vw, 28px);
}

/* ===== 面包屑 ===== */
.sk-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  font-size: 14px;
  color: var(--sk-steel);
  padding: 14px 0;
}

.sk-breadcrumb a {
  color: var(--sk-primary);
  font-weight: 600;
}

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

.sk-breadcrumb-sep {
  color: var(--sk-mist);
  font-size: 16px;
}

/* ===== 头部整体 ===== */
.sk-header {
  background: var(--sk-blue-gradient);
  color: var(--sk-ice);
  position: relative;
  z-index: 80;
}

/* 顶部刊头条 */
.sk-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  height: 30px;
  padding: 0 clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(248, 250, 252, 0.16);
  font-size: 11px;
  letter-spacing: 0.18em;
  white-space: nowrap;
  overflow: hidden;
  color: rgba(248, 250, 252, 0.7);
}

.sk-topbar-mark {
  font-family: var(--sk-serif);
  font-weight: 900;
  font-size: 18px;
  line-height: 1;
  color: var(--sk-accent-soft);
  margin-right: 2px;
}

.sk-topbar-claim {
  font-weight: 700;
  color: rgba(248, 250, 252, 0.88);
  margin-right: auto;
}

.sk-topbar-note {
  font-weight: 400;
  color: rgba(248, 250, 252, 0.5);
}

/* 主体刊头区 */
.sk-header-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  min-height: 96px;
  padding: 18px clamp(20px, 5vw, 72px);
}

.sk-brand {
  flex: 0 0 auto;
}

.sk-brand-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px 0;
}

.sk-brand-name {
  font-family: var(--sk-serif);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--sk-ice);
}

.sk-brand-link:hover .sk-brand-name {
  background: linear-gradient(135deg, var(--sk-accent) 0%, var(--sk-accent-soft) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sk-brand-sub {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.42em;
  padding-left: 0.1em;
  color: rgba(248, 250, 252, 0.52);
}

/* ===== 导航 ===== */
.sk-nav {
  margin-left: auto;
}

.sk-nav-list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 32px);
}

.sk-nav-link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  color: rgba(248, 250, 252, 0.82);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.sk-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 3px;
  border-radius: 999px;
  background: var(--sk-orange-gradient);
  transition: width 0.24s ease;
}

.sk-nav-link:hover,
.sk-nav-link:focus-visible {
  color: var(--sk-ice);
}

.sk-nav-link:hover::after,
.sk-nav-link:focus-visible::after {
  width: 100%;
}

.sk-nav-link[aria-current="page"] {
  color: var(--sk-ice);
}

.sk-nav-link[aria-current="page"]::after {
  width: 100%;
  background: var(--sk-orange-gradient);
}

/* ===== 移动导航按钮 ===== */
.sk-nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 10px;
  border-radius: 8px;
  min-width: 52px;
  min-height: 48px;
  background: rgba(248, 250, 252, 0.08);
  border: 1px solid rgba(248, 250, 252, 0.2);
  color: var(--sk-ice);
  transition: background 0.2s ease;
}

.sk-nav-toggle:hover {
  background: rgba(248, 250, 252, 0.16);
}

.sk-nav-toggle[aria-expanded="true"] {
  background: rgba(255, 90, 31, 0.2);
  border-color: rgba(255, 90, 31, 0.5);
}

.sk-nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 99px;
  background: var(--sk-ice);
  transition: width 0.2s ease, transform 0.2s ease;
}

.sk-nav-toggle[aria-expanded="true"] .sk-nav-toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 0);
}

.sk-nav-toggle[aria-expanded="true"] .sk-nav-toggle-line:nth-child(2) {
  transform: rotate(-45deg) translate(-5px, 0);
}

.sk-nav-toggle-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

/* ===== 数据脉冲条 ===== */
.sk-pulse {
  position: relative;
  height: var(--sk-pulse-h);
  overflow: hidden;
  background: rgba(11, 17, 32, 0.4);
  border-top: 1px solid rgba(59, 130, 246, 0.35);
}

.sk-pulse-label {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: clamp(20px, 5vw, 72px);
  transform: translateY(-50%);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
  color: var(--sk-ice);
  background: var(--sk-orange-gradient);
  padding: 3px 10px;
  border-radius: 999px;
  box-shadow: 0 0 16px rgba(255, 90, 31, 0.55);
}

.sk-pulse-track {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, transparent 40%, rgba(59, 130, 246, 0.55) 50%, transparent 60%),
    repeating-linear-gradient(118deg, rgba(248, 250, 252, 0.14) 0px, rgba(248, 250, 252, 0.14) 1px, transparent 1px, transparent 18px);
  background-size: 160px 100%, auto;
  animation: pulse-slide 4.2s linear infinite;
}

/* ===== 头部响应式 ===== */
@media (max-width: 960px) {
  :root {
    --sk-header-h: 116px;
  }

  .sk-topbar-note {
    display: none;
  }

  .sk-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(360px, 88vw);
    background: rgba(10, 26, 47, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 90;
    padding: clamp(48px, 12vw, 80px) 28px 40px;
    box-shadow: -24px 0 60px rgba(11, 17, 32, 0.4);
    transform: translateX(105%);
    transition: transform 0.28s ease;
    margin-left: 0;
    border-left: 1px solid rgba(255, 90, 31, 0.32);
  }

  .sk-nav[data-open] {
    transform: translateX(0);
  }

  .sk-nav-list {
    flex-direction: column;
    gap: 6px;
    align-items: stretch;
  }

  .sk-nav-link {
    display: block;
    padding: 14px 8px;
    font-size: 19px;
    font-weight: 800;
    color: rgba(248, 250, 252, 0.8);
    border-bottom: 1px solid rgba(248, 250, 252, 0.1);
  }

  .sk-nav-link::after {
    display: none;
  }

  .sk-nav-link[aria-current="page"] {
    color: var(--sk-ice);
    background: linear-gradient(90deg, rgba(255, 90, 31, 0.2), transparent 70%);
    border-left: 3px solid var(--sk-accent);
    padding-left: 14px;
  }

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

@media (max-width: 560px) {
  .sk-topbar-claim {
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .sk-brand-name {
    font-size: 22px;
  }

  .sk-brand-sub {
    font-size: 9px;
  }
}

/* ===== 页脚 ===== */
.sk-footer {
  background: var(--sk-blue-gradient);
  color: var(--sk-ice);
  position: relative;
  margin-top: clamp(48px, 8vw, 96px);
  border-top: 3px solid var(--sk-orange-gradient);
}

.sk-footer::before {
  content: "";
  position: absolute;
  top: -24px;
  left: 0;
  right: 0;
  height: 24px;
  background:
    linear-gradient(112deg, transparent 29px, var(--sk-ice) 30px, var(--sk-ice) 32px, transparent 33px),
    linear-gradient(45deg, transparent 14px, var(--sk-secondary) 15px, var(--sk-secondary) 17px, transparent 18px);
  opacity: 0.12;
}

.sk-footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: clamp(20px, 3vw, 48px);
  padding: clamp(36px, 5vw, 64px) clamp(20px, 5vw, 72px);
  border-bottom: 1px solid rgba(248, 250, 252, 0.12);
}

.sk-footer-brand,
.sk-footer-contact,
.sk-footer-legal {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sk-footer-name {
  font-family: var(--sk-serif);
  font-weight: 900;
  font-size: 26px;
  line-height: 1;
}

.sk-footer-tagline {
  font-size: 14px;
  color: rgba(248, 250, 252, 0.62);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.sk-footer-icp {
  font-size: 13px;
  color: rgba(248, 250, 252, 0.48);
  border-top: 1px solid rgba(248, 250, 252, 0.08);
  padding-top: 12px;
  margin-top: auto;
}

.sk-footer-title {
  font-family: var(--sk-serif);
  font-weight: 700;
  font-size: 16px;
  color: var(--sk-accent-soft);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  border-left: 3px solid var(--sk-accent);
  padding-left: 10px;
}

.sk-footer-line {
  font-size: 15px;
  color: rgba(248, 250, 252, 0.72);
  line-height: 1.6;
}

.sk-footer-link {
  position: relative;
  display: inline-block;
  width: fit-content;
  color: rgba(248, 250, 252, 0.7);
  font-size: 15px;
  font-weight: 500;
  padding: 4px 0;
  transition: color 0.2s ease, transform 0.2s ease;
}

.sk-footer-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--sk-orange-gradient);
  transition: width 0.22s ease;
}

.sk-footer-link:hover,
.sk-footer-link:focus-visible {
  color: var(--sk-ice);
  transform: translateX(2px);
}

.sk-footer-link:hover::after,
.sk-footer-link:focus-visible::after {
  width: 100%;
}

/* ===== 页脚响应式 ===== */
@media (max-width: 860px) {
  .sk-footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .sk-footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .sk-footer-grid {
    grid-template-columns: 1fr;
  }

  .sk-footer-brand {
    grid-column: auto;
  }
}

/* ===== 无障碍跳转链接 ===== */
.sk-skip {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 200;
  background: var(--sk-ice);
  color: var(--sk-primary);
  padding: 12px 24px;
  border-radius: 0 0 12px 12px;
  font-weight: 700;
  transition: top 0.2s ease;
  box-shadow: 0 8px 20px rgba(10, 26, 47, 0.25);
}

.sk-skip:focus {
  top: 0;
}

/* ===== 滚动进度条 ===== */
.sk-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  z-index: 300;
  background: var(--sk-orange-gradient);
  border-radius: 0 99px 99px 0;
  box-shadow: 0 0 12px rgba(255, 90, 31, 0.6);
  pointer-events: none;
}

/* ===== 页面主区域基础节奏 ===== */
#main-content {
  display: block;
  width: 100%;
}

/* ===== 页面头部基础区 ===== */
.page-hero {
  position: relative;
  padding: clamp(32px, 6vw, 64px) 0;
  margin-bottom: clamp(24px, 4vw, 48px);
}

/* ===== 编辑器通栏信息带 ===== */
.full-bleed-info {
  background: var(--sk-blue-gradient);
  color: var(--sk-ice);
  padding: clamp(24px, 4vw, 48px) clamp(20px, 5vw, 72px);
  position: relative;
  overflow: hidden;
}

.full-bleed-info::after {
  content: "B体育";
  position: absolute;
  right: -1.5rem;
  top: -2rem;
  font-family: var(--sk-serif);
  font-weight: 900;
  font-size: clamp(96px, 18vw, 200px);
  color: transparent;
  -webkit-text-stroke: 1px rgba(248, 250, 252, 0.06);
  pointer-events: none;
  line-height: 1;
}

/* ===== 动画 ===== */
@keyframes pulse-slide {
  0% {
    background-position: -160px 0, 0 0;
  }

  100% {
    background-position: calc(100% + 200px) 0, 0 0;
  }
}

@keyframes sk-rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

.sk-rise {
  opacity: 0;
  animation: sk-rise-in 0.6s ease var(--sk-rise-delay, 0ms) forwards;
}

/* ===== 印刷选择 ===== */
::selection {
  background: rgba(255, 90, 31, 0.25);
  color: var(--sk-ink);
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--sk-mist);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--sk-secondary), var(--sk-primary));
  border-radius: 99px;
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .sk-pulse-track {
    background-image:
      linear-gradient(100deg, transparent 40%, rgba(59, 130, 246, 0.55) 50%, transparent 60%);
    background-size: 160px 100%, auto;
  }

  .sk-pulse-track,
  .sk-pulse label {
    animation: none;
  }
}