/* =========================================================
   千赢体育VIP — 全站共享样式 /assets/site.css
   框架式左侧导航 + 奶油正文区 + 复古出版色体系
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption,
blockquote, dl, dt, dd, pre, fieldset, legend {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
table { border-collapse: collapse; width: 100%; }
[hidden] { display: none !important; }

/* ---------- 2. 变量 ---------- */
:root {
  --navy: #0B1B3A;
  --navy-deep: #071228;
  --blue: #123A6B;
  --cream: #F4EBD7;
  --cream-2: #EBE0C8;
  --ink: #241C15;
  --ink-soft: #4A4038;
  --orange: #FF6B1A;
  --orange-soft: #FF8A45;
  --cyan: #2EF2E2;
  --cyan-ink: #0C8A82;
  --verm: #E4451F;
  --steel: #7F8EA3;
  --white: #FFFFFF;

  --rail-w: 250px;
  --topbar-h: 58px;

  --line: rgba(36, 28, 21, 0.16);
  --line-strong: rgba(36, 28, 21, 0.32);
  --line-dark: rgba(244, 235, 215, 0.16);
  --line-cyan: rgba(46, 242, 226, 0.28);

  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system,
    "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Menlo,
    Consolas, "Liberation Mono", monospace;

  --ease: cubic-bezier(0.22, 0.68, 0.32, 1);
  --z-rail: 90;
  --z-progress: 120;
}

/* ---------- 3. 基础排版 ---------- */
body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background-color: var(--cream);
  background-image:
    linear-gradient(to right, rgba(36, 28, 21, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 28, 21, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  min-height: 100vh;
  overflow-x: hidden;
}

main { display: block; }

h1, h2, h3, h4 {
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--navy);
}

strong { font-weight: 800; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

::selection { background: var(--orange); color: var(--white); }

/* ---------- 4. 焦点可见性 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgba(11, 27, 58, 0.55);
}

/* ---------- 5. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  padding: 11px 18px;
  background: var(--orange);
  color: var(--white);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  transform: translateY(-180%);
  transition: transform 0.18s var(--ease);
}

.skip-link:focus { transform: translateY(0); }

/* ---------- 6. 页面偏移（为固定导航让位）---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}

@media (max-width: 1023.98px) {
  body { padding-top: var(--topbar-h); }
}

#main-content { scroll-margin-top: 24px; }

/* ---------- 7. 头部框架 ---------- */
.site-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: var(--z-rail);
  background: var(--navy);
  color: var(--cream);
  border-right: 1px solid var(--line-cyan);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: var(--z-progress);
  background: linear-gradient(90deg, var(--cyan) 0%, var(--orange) 100%);
  transition: width 0.08s linear;
  pointer-events: none;
}

.rail-frame {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
  padding: 28px 22px 22px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* 品牌标记 */
.rail-brand {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line-dark);
}

.rail-brand__mark,
.rail-topbar__mark,
.foot-brand__mark {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: var(--navy);
  font-weight: 900;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 74%, 76% 100%, 0 100%);
}

.rail-brand__mark {
  width: 44px;
  height: 44px;
  font-size: 22px;
}

.rail-brand__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.rail-brand__name {
  font-size: 16.5px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.rail-brand__tag {
  font-family: var(--font-mono);
  font-size: 9.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

/* 导航 */
.rail-nav {
  margin-top: 22px;
  flex: 1 1 auto;
  min-height: 0;
}

.rail-nav__label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.24em;
  color: rgba(244, 235, 215, 0.42);
  margin-bottom: 10px;
}

.rail-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rail-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  padding: 10px 10px 10px 34px;
  font-size: 14px;
  font-weight: 600;
  color: rgba(244, 235, 215, 0.76);
  border-left: 2px solid transparent;
  transition: background 0.16s var(--ease), color 0.16s var(--ease),
    border-color 0.16s var(--ease), transform 0.16s var(--ease);
}

.rail-nav__link::before {
  content: attr(data-index);
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--steel);
  transition: color 0.16s var(--ease);
}

.rail-nav__link:hover {
  background: rgba(46, 242, 226, 0.09);
  color: var(--white);
  border-left-color: var(--cyan);
  transform: translateX(2px);
}

.rail-nav__link:hover::before { color: var(--cyan); }

.rail-nav__link[aria-current="page"] {
  background: rgba(255, 107, 26, 0.14);
  color: var(--white);
  font-weight: 800;
  border-left-color: var(--orange);
}

.rail-nav__link[aria-current="page"]::before { color: var(--orange); }

.rail-nav__link[aria-current="page"]:hover {
  background: rgba(255, 107, 26, 0.2);
  border-left-color: var(--orange);
}

/* 导航栏内按钮组 */
.rail-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
}

.rail-actions .btn {
  width: 100%;
  padding: 11px 14px;
  font-size: 13.5px;
}

.rail-foot {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.04em;
}

.rail-foot__k { color: rgba(46, 242, 226, 0.7); }
.rail-foot__v { color: rgba(244, 235, 215, 0.5); word-break: break-all; }

/* 移动端顶栏与按钮（桌面端隐藏） */
.rail-topbar { display: none; }
.rail-toggle { display: none; }

/* ---------- 8. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-align: center;
  border: 1px solid transparent;
  border-radius: 0;
  transition: background 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.btn--primary {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
}

.btn--primary:hover {
  background: var(--orange-soft);
  border-color: var(--orange-soft);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(244, 235, 215, 0.34);
  color: var(--cream);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  transform: translateY(-1px);
}

.btn--line {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}

.btn--line:hover {
  border-color: var(--orange);
  color: var(--verm);
  transform: translateY(-1px);
}

/* ---------- 9. 页脚 ---------- */
.site-foot {
  position: relative;
  overflow: hidden;
  background: var(--navy);
  color: rgba(244, 235, 215, 0.82);
  border-top: 1px solid var(--line-cyan);
}

.site-foot::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--orange) 0 34%,
    var(--cyan) 34% 62%,
    transparent 62%
  );
}

.site-foot::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 240px;
  height: 240px;
  transform: skewX(-14deg);
  background: repeating-linear-gradient(
    135deg,
    rgba(46, 242, 226, 0.1) 0 1px,
    transparent 1px 14px
  );
  pointer-events: none;
}

.foot-frame {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  padding: 54px 32px 30px;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(3, minmax(0, 1fr));
  gap: 38px 32px;
}

.foot-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.foot-brand__link {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  align-self: flex-start;
}

.foot-brand__mark {
  width: 38px;
  height: 38px;
  font-size: 19px;
}

.foot-brand__name {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--white);
}

.foot-brand__desc {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 235, 215, 0.66);
  max-width: 34ch;
}

.foot-contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.6;
}

.foot-contact__row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.foot-contact__row dt {
  flex: 0 0 42px;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.foot-contact__row dd {
  color: rgba(244, 235, 215, 0.8);
  word-break: break-all;
}

.foot-note {
  max-width: 38ch;
  padding-left: 10px;
  border-left: 2px solid var(--verm);
  font-size: 12px;
  line-height: 1.7;
  color: rgba(244, 235, 215, 0.46);
}

.foot-col {
  display: flex;
  flex-direction: column;
}

.foot-col__title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.foot-col__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.foot-col__link {
  align-self: flex-start;
  font-size: 14.5px;
  color: rgba(244, 235, 215, 0.78);
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.foot-col__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.foot-base {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  margin-top: 4px;
  padding-top: 22px;
  border-top: 1px solid var(--line-dark);
}

.foot-base__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  font-size: 12.5px;
  color: rgba(244, 235, 215, 0.5);
}

.foot-base__meta .mono { color: rgba(244, 235, 215, 0.62); }

.to-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid rgba(46, 242, 226, 0.42);
  background: transparent;
  color: var(--cyan);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.12em;
  transition: background 0.18s var(--ease), color 0.18s var(--ease),
    border-color 0.18s var(--ease);
}

.to-top:hover {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--navy);
}

/* ---------- 10. 通用容器与标题组件 ---------- */
.wrap {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 26px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--verm);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--orange);
  transform: skewX(-24deg);
}

.h-display {
  font-size: clamp(30px, 4.4vw, 52px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.h-section {
  font-size: clamp(21px, 2.4vw, 28px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.h-section::before {
  content: "";
  display: block;
  width: 26px;
  height: 3px;
  margin-bottom: 10px;
  background: var(--orange);
  transform: skewX(-30deg);
}

.lead {
  font-size: 18px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 70ch;
}

.prose {
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink-soft);
  max-width: 72ch;
}

.prose p + p { margin-top: 16px; }

.prose h2,
.prose h3 { margin-top: 30px; margin-bottom: 12px; color: var(--navy); }

.prose ul,
.prose ol {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.prose li {
  position: relative;
  padding-left: 20px;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 8px;
  height: 2px;
  background: var(--orange);
  transform: skewX(-30deg);
}

.prose a {
  color: var(--verm);
  border-bottom: 1px solid var(--orange);
}

.prose a:hover { color: var(--orange); }

/* ---------- 11. 面包屑 ---------- */
.crumbs { display: block; }

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.crumbs__list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.crumbs__list li:not(:last-child)::after {
  content: "/";
  color: rgba(127, 142, 163, 0.7);
}

.crumbs__list a {
  color: var(--steel);
  border-bottom: 1px solid transparent;
}

.crumbs__list a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.crumbs__list [aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 12. 面板 ---------- */
.panel {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 22px;
}

.panel--cream {
  background: var(--cream-2);
}

.panel--navy {
  background: var(--navy);
  border-color: var(--line-cyan);
  color: var(--cream);
}

.panel--navy h2,
.panel--navy h3 { color: var(--white); }

/* ---------- 13. 网格 ---------- */
.grid {
  display: grid;
  gap: 20px;
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 14. 标签与切换 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border: 1px solid currentColor;
  background: rgba(228, 69, 31, 0.07);
  color: var(--verm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.tag--cyan {
  background: rgba(12, 138, 130, 0.08);
  color: var(--cyan-ink);
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tabs__btn {
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: background 0.16s var(--ease), color 0.16s var(--ease),
    border-color 0.16s var(--ease);
}

.tabs__btn:hover {
  border-color: var(--cyan-ink);
  color: var(--cyan-ink);
}

.tabs__btn[aria-selected="true"] {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--cream);
}

/* ---------- 15. 图片容器基础规则 ---------- */
.media {
  position: relative;
  overflow: hidden;
  background-color: var(--navy);
  background-image: repeating-linear-gradient(
    135deg,
    rgba(46, 242, 226, 0.1) 0 1px,
    transparent 1px 14px
  );
  border: 1px solid var(--line-cyan);
}

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

.media--wide img { aspect-ratio: 21 / 9; }
.media--tall img { aspect-ratio: 3 / 4; }
.media--square img { aspect-ratio: 1 / 1; }

.media__cap {
  display: block;
  padding: 10px 13px;
  background: var(--cream-2);
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
}

/* ---------- 16. 响应式 ---------- */
@media (max-width: 1180px) {
  .foot-frame {
    grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
    gap: 32px 24px;
  }
}

@media (max-width: 1023.98px) {
  /* 顶栏 */
  .rail-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-h);
    z-index: 95;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 14px;
    background: var(--navy);
    border-bottom: 1px solid var(--line-cyan);
    pointer-events: auto;
  }

  .rail-topbar__brand {
    display: inline-flex;
    align-items: center;
    gap: 9px;
  }

  .rail-topbar__mark {
    width: 30px;
    height: 30px;
    font-size: 15px;
  }

  .rail-topbar__name {
    font-size: 15px;
    font-weight: 900;
    letter-spacing: -0.01em;
    color: var(--white);
  }

  .rail-toggle {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 8px 13px;
    border: 1px solid rgba(46, 242, 226, 0.5);
    background: rgba(46, 242, 226, 0.06);
    color: var(--cream);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
  }

  .rail-toggle__bars {
    display: grid;
    gap: 4px;
    width: 16px;
  }

  .rail-toggle__bars i {
    display: block;
    height: 2px;
    background: var(--cyan);
    transition: transform 0.2s var(--ease), opacity 0.2s var(--ease);
  }

  .site-rail[data-open="true"] .rail-toggle__bars i:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  .site-rail[data-open="true"] .rail-toggle__bars i:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }

  /* 遮罩层 */
  .site-rail {
    position: fixed;
    inset: 0;
    width: auto;
    background: transparent;
    border-right: 0;
    pointer-events: none;
    transition: background 0.24s var(--ease);
  }

  .site-rail[data-open="true"] {
    background: rgba(7, 18, 40, 0.66);
    pointer-events: auto;
  }

  /* 底部抽屉 */
  .rail-frame {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    width: auto;
    height: auto;
    max-height: 86vh;
    padding: 22px 20px calc(26px + env(safe-area-inset-bottom));
    background: var(--navy);
    border-top: 2px solid var(--cyan);
    transform: translateY(104%);
    transition: transform 0.3s var(--ease);
    pointer-events: auto;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .site-rail[data-open="true"] .rail-frame {
    transform: translateY(0);
  }

  .rail-brand { display: none; }

  .rail-nav { margin-top: 4px; }

  .rail-nav__link {
    padding: 13px 12px 13px 38px;
    font-size: 15px;
  }

  .rail-nav__link::before { left: 12px; }

  .rail-actions { margin-top: 18px; }

  .rail-foot { margin-top: 14px; }

  /* 页脚折行 */
  .foot-frame {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 44px 22px 26px;
  }

  .foot-base { justify-content: flex-start; }
}

@media (max-width: 720px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .wrap { padding-inline: 18px; }

  .h-display { letter-spacing: -0.015em; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }

  .foot-frame {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
    padding: 38px 18px 24px;
  }

  .foot-contact__row dt { flex-basis: 38px; }

  .foot-base {
    flex-direction: column;
    align-items: flex-start;
  }

  .to-top { width: 100%; justify-content: center; }
}

/* ---------- 17. 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .rail-nav__link:hover,
  .btn:hover { transform: none; }
}