/* ============================================
   天博TB体育 · Site Kit
   共享样式表 /assets/site.css
   ============================================ */

/* ---------- 1. CSS 变量 ---------- */
:root{
  --deep-plum-blue:#0B1A3C;
  --mid-navy:#122A5A;
  --signal-orange:#FF6B00;
  --light-orange:#FFB37A;
  --ice-white:#F5F7FA;
  --graphite-line:#DCE3EC;
  --ink-dark:#0A1220;
  --data-green:#10B981;
  --data-red:#EF4444;
  --stone-gray:#6B7280;

  --font-heading:"Barlow Condensed","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-number:"DIN Alternate","Roboto Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --sidebar-width:220px;
  --content-max:1240px;
  --header-h-mobile:64px;
  --ease:cubic-bezier(0.4,0,0.2,1);
}

/* ---------- 2. Reset 与基础排版 ---------- */
*,
*::before,
*::after{
  box-sizing:border-box;
  margin:0;
  padding:0;
}

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

body{
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.75;
  color:var(--ink-dark);
  background-color:var(--ice-white);
  background-image:radial-gradient(rgba(11,26,60,0.045) 1px,transparent 1px);
  background-size:32px 32px;
  min-height:100vh;
  padding-left:var(--sidebar-width);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

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

a{
  color:inherit;
  text-underline-offset:3px;
  text-decoration-color:rgba(255,107,0,0.4);
}

button{
  font:inherit;
  border:none;
  background:none;
  cursor:pointer;
  color:inherit;
}

ul,
ol{
  list-style:none;
  margin:0;
  padding:0;
}

h1,
h2,
h3,
h4,
h5,
h6{
  font-family:var(--font-heading);
  font-weight:700;
  line-height:1.2;
  letter-spacing:0.02em;
  overflow-wrap:break-word;
  margin-bottom:1rem;
}

h1{font-size:clamp(2rem,5vw,3rem);}
h2{font-size:clamp(1.75rem,4vw,2.25rem);}
h3{font-size:clamp(1.25rem,3vw,1.5rem);}

p{
  overflow-wrap:break-word;
}

:focus-visible{
  outline:3px solid var(--signal-orange);
  outline-offset:2px;
}

::selection{
  background:rgba(255,107,0,0.25);
  color:var(--deep-plum-blue);
}

/* ---------- 3. 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:16px;
  z-index:2100;
  background:var(--signal-orange);
  color:var(--deep-plum-blue);
  padding:10px 20px;
  font-weight:700;
  font-size:0.9375rem;
  text-decoration:none;
  transition:top 180ms var(--ease);
}

.skip-link:focus-visible{
  top:16px;
  outline:none;
}

/* ---------- 4. 侧边轨道头部 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  width:var(--sidebar-width);
  z-index:1000;
  background:
    radial-gradient(circle at 18% 8%,rgba(255,107,0,0.1) 0%,transparent 55%),
    linear-gradient(180deg,var(--deep-plum-blue) 0%,#0e2147 100%);
  border-right:1px solid rgba(255,255,255,0.06);
  overflow-y:auto;
  overflow-x:hidden;
}

.header-inner{
  display:flex;
  flex-direction:column;
  min-height:100%;
  padding:24px 12px 20px;
}

/* 品牌区 */
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 4px;
  color:#fff;
  text-decoration:none;
}

.brand:hover{
  color:#fff;
}

.brand-mark{
  flex-shrink:0;
  width:48px;
  height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--signal-orange);
  color:var(--deep-plum-blue);
  font-family:var(--font-heading);
  font-size:1.375rem;
  font-weight:800;
  letter-spacing:0.04em;
  clip-path:polygon(0 0,100% 0,100% 74%,84% 100%,0 100%);
}

.brand-text{
  display:flex;
  flex-direction:column;
  min-width:0;
}

.brand-name{
  font-family:var(--font-heading);
  font-size:1.375rem;
  font-weight:700;
  line-height:1.1;
  letter-spacing:0.03em;
}

.brand-slogan{
  font-size:0.625rem;
  color:rgba(255,255,255,0.5);
  letter-spacing:0.12em;
  text-transform:uppercase;
  margin-top:2px;
}

/* 移动端汉堡按钮 */
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:5px;
  width:40px;
  height:40px;
  padding:8px;
  background:transparent;
  border:1px solid rgba(255,255,255,0.14);
}

.nav-toggle-line{
  display:block;
  width:18px;
  height:2px;
  background:#fff;
  transition:transform 180ms var(--ease),opacity 180ms var(--ease);
}

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

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

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

/* 导航容器 */
.site-nav{
  display:flex;
  flex-direction:column;
  flex:1;
  margin-top:32px;
}

.nav-list{
  display:flex;
  flex-direction:column;
  gap:2px;
  flex:1;
}

.nav-item{
  margin:0;
}

.nav-link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:11px 14px;
  color:rgba(255,255,255,0.65);
  text-decoration:none;
  font-size:0.9375rem;
  font-weight:500;
  line-height:1.3;
  border-left:3px solid transparent;
  transition:color 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease);
}

.nav-link:hover{
  color:#fff;
  background:rgba(255,255,255,0.06);
  border-left-color:rgba(255,107,0,0.6);
}

.nav-link[aria-current="page"]{
  color:#fff;
  background:linear-gradient(90deg,rgba(255,107,0,0.16) 0%,rgba(255,107,0,0) 100%);
  border-left-color:var(--signal-orange);
}

.nav-link[aria-current="page"] .nav-index{
  color:var(--signal-orange);
  opacity:1;
}

.nav-index{
  width:22px;
  text-align:right;
  font-family:var(--font-number);
  font-size:0.75rem;
  font-weight:500;
  color:rgba(255,255,255,0.35);
  letter-spacing:0.06em;
  transition:color 180ms var(--ease);
}

.nav-label{
  flex:1;
  min-width:0;
}

/* 头部 CTA 与联系信息 */
.header-cta{
  margin:24px 0 16px;
}

.header-cta .btn{
  width:100%;
  padding:12px 16px;
  font-size:0.875rem;
}

.header-contact{
  display:flex;
  flex-direction:column;
  gap:4px;
}

.header-contact::before{
  content:"";
  display:block;
  width:28px;
  height:3px;
  background:var(--signal-orange);
  margin-bottom:10px;
}

.contact-line{
  font-size:0.75rem;
  color:rgba(255,255,255,0.45);
  line-height:1.4;
  word-break:break-all;
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border:1px solid transparent;
  font-family:var(--font-body);
  font-size:0.9375rem;
  font-weight:600;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background-color 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
}

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

.btn-primary{
  background:var(--signal-orange);
  border-color:var(--signal-orange);
  color:var(--deep-plum-blue);
}

.btn-primary:hover{
  background:#e85e00;
  border-color:#e85e00;
  color:var(--deep-plum-blue);
}

.btn-outline{
  background:transparent;
  border-color:var(--signal-orange);
  color:var(--signal-orange);
}

.btn-outline:hover{
  background:var(--signal-orange);
  color:var(--deep-plum-blue);
}

.btn-arrow{
  font-size:1.125rem;
  line-height:1;
  transition:transform 180ms var(--ease);
}

.btn:hover .btn-arrow{
  transform:translateX(3px);
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  margin-top:64px;
  color:#fff;
  background:
    radial-gradient(circle at 80% 0%,rgba(255,107,0,0.06) 0%,transparent 50%),
    linear-gradient(180deg,var(--deep-plum-blue) 0%,#0a1220 100%);
  border-top:4px solid var(--signal-orange);
}

.footer-top,
.footer-bottom{
  max-width:var(--content-max);
  margin:0 auto;
  padding-left:clamp(20px,4vw,40px);
  padding-right:clamp(20px,4vw,40px);
}

.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-top:56px;
  padding-bottom:48px;
}

.footer-brand{
  display:flex;
  flex-direction:column;
  gap:10px;
}

.footer-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-heading);
  font-size:1.75rem;
  font-weight:800;
  color:#fff;
  text-decoration:none;
  letter-spacing:0.04em;
}

.footer-logo:hover{
  color:#fff;
}

.footer-logo::before{
  content:"TB";
  display:flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  background:var(--signal-orange);
  color:var(--deep-plum-blue);
  font-size:1rem;
  font-weight:800;
  clip-path:polygon(0 0,100% 0,100% 74%,84% 100%,0 100%);
}

.footer-slogan{
  font-size:0.875rem;
  color:rgba(255,255,255,0.6);
}

.footer-trust{
  max-width:34ch;
  font-size:0.8125rem;
  line-height:1.6;
  color:rgba(255,255,255,0.45);
  border-left:2px solid var(--signal-orange);
  padding-left:12px;
}

.footer-col{
  display:flex;
  flex-direction:column;
  gap:12px;
}

.footer-heading{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:4px;
  font-family:var(--font-heading);
  font-size:1.125rem;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:0.08em;
  color:#fff;
}

.footer-heading::before{
  content:"";
  display:block;
  width:18px;
  height:3px;
  background:var(--signal-orange);
}

.footer-links{
  display:flex;
  flex-direction:column;
  gap:8px;
}

.footer-links a{
  color:rgba(255,255,255,0.65);
  text-decoration:none;
  font-size:0.875rem;
  transition:color 180ms var(--ease),padding-left 180ms var(--ease);
}

.footer-links a:hover{
  color:var(--signal-orange);
  padding-left:6px;
}

.footer-email,
.footer-phone,
.footer-address,
.footer-icp{
  font-size:0.8125rem;
  line-height:1.6;
  color:rgba(255,255,255,0.55);
  word-break:break-all;
}

.footer-icp{
  margin-top:4px;
  display:inline-flex;
  padding:3px 8px;
  border:1px solid rgba(255,255,255,0.15);
  font-family:var(--font-number);
  font-size:0.75rem;
}

.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.08);
  padding-top:20px;
  padding-bottom:24px;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  font-size:0.8125rem;
  color:rgba(255,255,255,0.45);
}

/* ---------- 7. 页面通用组件 ---------- */
.container{
  width:100%;
  max-width:var(--content-max);
  margin:0 auto;
  padding:clamp(24px,5vw,56px) clamp(20px,4vw,40px);
}

main,
#main-content{
  display:block;
  margin-top:var(--header-h-mobile);
}

.section-title{
  margin-bottom:24px;
  font-size:clamp(1.875rem,4vw,2.5rem);
  font-weight:800;
  line-height:1.05;
  color:var(--deep-plum-blue);
}

.section-title--light{
  color:#fff;
}

.section-title--orange{
  color:var(--signal-orange);
}

.card{
  position:relative;
  background:#fff;
  border:1px solid var(--graphite-line);
  border-radius:0;
  padding:clamp(16px,3vw,24px);
  transition:transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}

.card:hover{
  transform:translateY(-2px);
  border-color:var(--signal-orange);
  box-shadow:0 8px 28px rgba(10,18,32,0.08);
}

.card--dark{
  background:linear-gradient(145deg,var(--mid-navy) 0%,var(--deep-plum-blue) 100%);
  border-color:rgba(255,255,255,0.08);
  color:#fff;
}

.card--dark:hover{
  border-color:var(--signal-orange);
}

.card--flat{
  background:transparent;
  border-color:transparent;
  box-shadow:none;
}

.card--data{
  padding-top:48px;
}

.card--data::before{
  content:attr(data-index);
  position:absolute;
  top:0;
  left:0;
  min-width:36px;
  padding:5px 10px;
  background:var(--signal-orange);
  color:var(--deep-plum-blue);
  font-family:var(--font-number);
  font-size:0.875rem;
  font-weight:700;
  text-align:center;
  clip-path:polygon(0 0,100% 0,100% 74%,84% 100%,0 100%);
}

.status-item{
  position:relative;
  padding-left:16px;
}

.status-item::before{
  content:"";
  position:absolute;
  left:0;
  top:4px;
  bottom:4px;
  width:3px;
}

.status-item--fixed::before{
  background:var(--deep-plum-blue);
}

.status-item--pending::before{
  background:var(--signal-orange);
}

.status-item--confirm::before{
  background:var(--data-green);
}

.data-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:16px;
}

.data-grid > *{
  grid-column:span 12;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  font-size:0.75rem;
  font-weight:600;
  line-height:1.6;
  background:rgba(11,26,60,0.08);
  color:var(--deep-plum-blue);
}

.tag::before{
  content:"";
  width:6px;
  height:6px;
  background:currentColor;
  border-radius:50%;
  flex-shrink:0;
}

.tag--confirm{
  background:rgba(16,185,129,0.12);
  color:#0a7c5e;
}

.tag--fixed{
  background:rgba(11,26,60,0.1);
  color:var(--deep-plum-blue);
}

.tag--pending{
  background:rgba(255,107,0,0.12);
  color:#b34a00;
}

.tag--danger{
  background:rgba(239,68,68,0.1);
  color:#c0392b;
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  margin:0 0 24px;
  font-size:0.8125rem;
  color:var(--stone-gray);
}

.breadcrumb a{
  color:var(--stone-gray);
  text-decoration:none;
  transition:color 180ms var(--ease);
}

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

.breadcrumb li + li::before{
  content:"/";
  margin-right:6px;
  color:var(--graphite-line);
}

.breadcrumb [aria-current="page"]{
  color:var(--deep-plum-blue);
  font-weight:600;
}

.text-muted{
  color:var(--stone-gray);
  font-size:0.875rem;
}

.text-num{
  font-family:var(--font-number);
  font-variant-numeric:tabular-nums;
  letter-spacing:0.01em;
}

/* ---------- 8. 图片占位容器 ---------- */
.img-holder{
  position:relative;
  overflow:hidden;
  background:linear-gradient(135deg,var(--mid-navy) 0%,var(--deep-plum-blue) 100%);
  aspect-ratio:16 / 9;
}

.img-holder::before{
  content:"IMG";
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  z-index:1;
  font-family:var(--font-heading);
  font-size:1.5rem;
  font-weight:700;
  letter-spacing:0.2em;
  color:rgba(255,255,255,0.25);
}

.img-holder::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  background:radial-gradient(circle at 30% 30%,rgba(255,107,0,0.12) 0%,transparent 60%);
  opacity:0;
  transition:opacity 180ms var(--ease);
}

.img-holder:hover::after{
  opacity:1;
}

.img-holder img{
  position:absolute;
  inset:0;
  z-index:2;
  width:100%;
  height:100%;
  object-fit:cover;
}

.img-holder--square{
  aspect-ratio:1 / 1;
}

.img-holder--portrait{
  aspect-ratio:3 / 4;
}

.img-holder--wide{
  aspect-ratio:21 / 9;
}

/* ---------- 9. 滚动指示与返回顶部 ---------- */
.scroll-indicator{
  position:fixed;
  top:0;
  left:0;
  width:0%;
  height:3px;
  background:linear-gradient(90deg,var(--signal-orange) 0%,var(--light-orange) 100%);
  z-index:1500;
  pointer-events:none;
}

.back-top{
  position:fixed;
  right:20px;
  bottom:20px;
  width:44px;
  height:44px;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:0;
  background:var(--signal-orange);
  color:var(--deep-plum-blue);
  font-size:1.25rem;
  font-weight:700;
  cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% 74%,84% 100%,0 100%);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity 180ms var(--ease),transform 180ms var(--ease),visibility 180ms var(--ease);
  z-index:900;
}

.back-top:hover{
  background:var(--light-orange);
}

.back-top.is-visible{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}

/* ---------- 10. 屏幕阅读器辅助 ---------- */
.sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  white-space:nowrap;
  border:0;
}

/* ---------- 11. 响应式断点 ---------- */
@media (min-width:768px) and (max-width:1023px){
  :root{
    --sidebar-width:200px;
  }

  .header-inner{
    padding:20px 10px;
  }

  .brand-mark{
    width:40px;
    height:40px;
    font-size:1.125rem;
  }

  .brand-name{
    font-size:1.125rem;
  }

  .brand-slogan{
    display:none;
  }

  .nav-link{
    padding:10px 12px;
  }

  .footer-top{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
}

@media (max-width:767px){
  :root{
    --sidebar-width:0px;
  }

  body{
    padding-left:0;
  }

  main,
  #main-content{
    margin-top:0;
  }

  .container{
    padding:24px 16px;
  }

  .site-header{
    width:100%;
    height:var(--header-h-mobile);
    bottom:auto;
    border-right:none;
    border-bottom:1px solid rgba(255,255,255,0.08);
    overflow:visible;
  }

  .header-inner{
    flex-direction:row;
    justify-content:space-between;
    align-items:center;
    height:var(--header-h-mobile);
    min-height:0;
    padding:0 14px;
  }

  .brand{
    padding:0;
  }

  .brand-mark{
    width:38px;
    height:38px;
    font-size:1rem;
  }

  .brand-name{
    font-size:1.125rem;
  }

  .brand-slogan{
    display:none;
  }

  .nav-toggle{
    display:flex;
  }

  .site-nav{
    position:fixed;
    top:var(--header-h-mobile);
    left:0;
    bottom:0;
    width:280px;
    max-width:86vw;
    margin:0;
    padding:20px 16px 24px;
    background:
      radial-gradient(circle at 20% 0%,rgba(255,107,0,0.12) 0%,transparent 50%),
      var(--deep-plum-blue);
    box-shadow:8px 0 32px rgba(0,0,0,0.3);
    transform:translateX(-110%);
    visibility:hidden;
    transition:transform 280ms var(--ease),visibility 280ms var(--ease);
    z-index:1010;
    overflow-y:auto;
  }

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

  .nav-list{
    flex:0 0 auto;
    gap:4px;
  }

  .header-cta{
    margin:28px 0 16px;
  }

  .header-contact{
    margin-top:auto;
  }

  .footer-top{
    grid-template-columns:1fr;
    gap:28px;
    padding-top:40px;
    padding-bottom:32px;
  }

  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }

  .back-top{
    right:14px;
    bottom:14px;
    width:40px;
    height:40px;
    font-size:1.125rem;
  }
}

/* ---------- 12. 动效偏好 ---------- */
@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;
  }

  .site-nav,
  .back-top,
  .nav-toggle-line,
  .scroll-indicator{
    transition:none;
  }
}