:root {
  --navy: #0B1D3A;
  --navy-soft: #12294F;
  --navy-98: rgba(11, 29, 58, .98);
  --navy-92: rgba(11, 29, 58, .92);
  --navy-soft-98: rgba(18, 41, 79, .98);
  --navy-caption: rgba(11, 29, 58, .86);
  --paper: #F4EFE6;
  --paper-deep: #E3EAF0;
  --white: #FFFFFF;
  --white-85: rgba(255, 255, 255, .85);
  --white-80: rgba(255, 255, 255, .8);
  --white-75: rgba(255, 255, 255, .75);
  --white-72: rgba(255, 255, 255, .72);
  --white-68: rgba(255, 255, 255, .68);
  --white-60: rgba(255, 255, 255, .6);
  --white-55: rgba(255, 255, 255, .55);
  --white-48: rgba(255, 255, 255, .48);
  --white-40: rgba(255, 255, 255, .4);
  --white-08: rgba(255, 255, 255, .08);
  --white-06: rgba(255, 255, 255, .06);
  --ink: #1A2638;
  --electric: #00E5FF;
  --electric-deep: #00758A;
  --electric-soft: rgba(0, 229, 255, .08);
  --electric-mist: rgba(0, 229, 255, .16);
  --electric-faint: rgba(0, 229, 255, .04);
  --electric-glow: rgba(0, 229, 255, .06);
  --electric-line-faint: rgba(0, 229, 255, .12);
  --electric-border: rgba(0, 229, 255, .55);
  --electric-border-soft: rgba(0, 229, 255, .3);
  --orange: #FF6A00;
  --orange-soft: #FF7D1A;
  --orange-shadow: rgba(255, 106, 0, .35);
  --orange-glow: rgba(255, 106, 0, .28);
  --amber: #FFC24B;
  --amber-deep: #8A5D00;
  --amber-mist: rgba(255, 194, 75, .22);
  --line-faint: rgba(11, 29, 58, .08);
  --line-light: rgba(11, 29, 58, .1);
  --line-dash: rgba(11, 29, 58, .18);
  --line-repeat: rgba(11, 29, 58, .22);
  --text-muted: rgba(11, 29, 58, .66);
  --text-faint: rgba(11, 29, 58, .4);
  --navy-shadow: rgba(11, 29, 58, .28);
  --navy-shadow-light: rgba(11, 29, 58, .06);
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-display: 'Anton', 'Impact', 'Arial Black', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container-max: 1200px;
  --ease-out: cubic-bezier(.25, 1, .5, 1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{min-height:100vh;display:flex;flex-direction:column;font-family:var(--font-body);font-size:16px;line-height:1.6;color:var(--ink);background:var(--paper);letter-spacing:.01em}
main{display:block;flex:1}
h1,h2,h3,h4,h5{font-family:var(--font-display);font-weight:900;line-height:1.1;color:var(--navy)}
p{margin:0 0 1em}
a{color:var(--navy);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--orange)}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px}
::selection{background:var(--orange);color:var(--navy)}
#main-content{scroll-margin-top:120px;outline:none}
.container{max-width:var(--container-max);margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
.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}

/* 跳过链接 */
.skip-link{position:fixed;top:-100%;left:16px;z-index:9999;background:var(--white);color:var(--navy);padding:12px 24px;border:2px solid var(--orange);font-size:15px;font-weight:700;text-decoration:none;clip-path:polygon(0 0,100% 0,calc(100% - 8px) 100%,0 100%);transition:top .25s var(--ease-out)}
.skip-link:focus{top:16px}

/* 头条 */
.site-header{position:relative;z-index:500;width:100%;background:var(--navy)}
.scroll-progress{position:fixed;top:0;left:0;width:100%;height:3px;background:var(--white-08);z-index:1000;pointer-events:none}
.scroll-progress-bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--orange),var(--electric))}
.header-top{border-bottom:1px solid var(--electric-line-faint);background-color:var(--navy);background-image:linear-gradient(var(--electric-faint) 1px,transparent 1px),linear-gradient(90deg,var(--electric-faint) 1px,transparent 1px);background-size:32px 32px}
.header-top-inner{height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:relative;z-index:2}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--white)}
.brand:hover{color:var(--white)}
.brand-mark{display:grid;place-items:center;width:36px;height:36px;background:var(--orange);color:var(--navy);font-family:var(--font-display);font-size:19px;font-weight:900;clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);box-shadow:0 2px 10px var(--orange-shadow)}
.brand-text{display:flex;flex-direction:column;line-height:1}
.brand-name{font-family:var(--font-display);font-size:20px;font-weight:900;letter-spacing:.06em;color:var(--white)}
.brand-label{font-size:11px;letter-spacing:.18em;color:var(--white-55);margin-top:3px}
.header-status{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--white-72);white-space:nowrap}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--electric);position:relative;flex:none}
.status-dot::after{content:'';position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--electric);animation:pulse-ring 2s ease-out infinite}
@keyframes pulse-ring{0%{transform:scale(.7);opacity:1}80%{transform:scale(1.5);opacity:0}100%{transform:scale(1.8);opacity:0}}

/* 头部下层 */
.header-bottom{position:relative;background:var(--navy-98);border-bottom:1px solid var(--electric-line-faint)}
.header-bottom-inner{height:64px;display:flex;align-items:center;justify-content:flex-end;position:relative}
.site-nav{display:flex}
.nav-list{display:flex;align-items:center;gap:2px;list-style:none;padding:0;margin:0}
.nav-link{position:relative;display:block;padding:20px 14px 18px;font-family:var(--font-display);font-size:15px;font-weight:700;letter-spacing:.1em;color:var(--white-85);text-decoration:none;transition:color .25s ease}
.nav-link:hover{color:var(--white)}
.nav-link[aria-current="page"]{color:var(--white)}
.nav-link[aria-current="page"]::after{content:'';position:absolute;left:10px;right:10px;bottom:0;height:4px;background:var(--orange);clip-path:polygon(12% 0,100% 0,88% 100%,0 100%)}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;align-items:center;gap:5px;background:transparent;border:1px solid var(--electric-border-soft);border-radius:4px;cursor:pointer;transition:border-color .3s ease}
.nav-toggle:hover{border-color:var(--electric)}
.nav-toggle-bar{display:block;width:20px;height:2px;background:var(--white);transition:transform .3s var(--ease-out),opacity .25s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 返回顶部 */
.back-top{position:fixed;right:24px;bottom:28px;width:46px;height:46px;display:flex;align-items:center;justify-content:center;background:var(--navy-92);border:1px solid var(--electric-border);color:var(--electric);font-size:20px;line-height:1;cursor:pointer;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s ease,visibility .3s ease,transform .3s ease,background .3s ease;z-index:950;box-shadow:0 8px 24px var(--navy-shadow);clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%)}
.back-top:hover{background:var(--navy-soft);color:var(--orange);border-color:var(--orange);transform:translateY(-3px)}
.back-top.is-visible{opacity:1;visibility:visible;pointer-events:auto}

/* 页脚 */
.site-footer{margin-top:auto;background:var(--navy);color:var(--white-75)}
.footer-top{padding:40px 0 24px;background:var(--navy);border-bottom:1px solid var(--electric-line-faint)}
.footer-top-grid{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px}
.footer-brand{display:inline-flex;align-items:center;gap:12px;font-family:var(--font-display);font-size:30px;font-weight:900;letter-spacing:.08em;color:var(--white);text-decoration:none}
.footer-brand:hover{color:var(--white)}
.footer-brand-icon{display:grid;place-items:center;width:40px;height:40px;background:var(--orange);color:var(--navy);font-size:21px;clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%)}
.footer-nav-list{display:flex;flex-wrap:wrap;gap:8px 22px;list-style:none;padding:0;margin:0}
.footer-nav-list a{color:var(--white-68);font-size:14px;text-decoration:none;letter-spacing:.06em;transition:color .25s ease}
.footer-nav-list a:hover{color:var(--electric)}
.footer-middle{padding:24px 0;background:var(--navy)}
.footer-contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px 32px}
.footer-contact-item{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--white-80)}
.footer-contact-label{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--electric);font-weight:600}
.footer-bottom{padding:18px 0 26px;background:var(--navy);border-top:1px solid var(--white-06)}
.footer-bottom-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;font-size:13px;color:var(--white-48)}
.footer-copy{margin:0}
.footer-icp{margin:0}
.footer-links{display:flex;flex-wrap:wrap;gap:4px 20px}
.footer-links a{color:var(--white-48);font-size:13px;text-decoration:none}
.footer-links a:hover{color:var(--electric)}

/* 通用按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;font-family:-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;font-size:15px;font-weight:700;line-height:1;letter-spacing:.05em;color:var(--white);background:var(--navy-soft);border:1px solid transparent;border-radius:2px;cursor:pointer;text-decoration:none;transition:transform .3s ease,box-shadow .3s ease,background .3s ease,color .3s ease}
.btn:hover{transform:translateY(-2px);color:var(--white)}
.btn:active{transform:translateY(0)}
.btn-orange{background:var(--orange);color:var(--white);clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,0 100%);padding-right:32px}
.btn-orange:hover{background:var(--orange-soft);box-shadow:0 8px 24px var(--orange-glow);color:var(--white)}
.btn-outline{background:transparent;color:var(--electric);border:1px solid var(--electric-border)}
.btn-outline:hover{background:var(--electric-soft);color:var(--electric);border-color:var(--electric)}

/* 标签 */
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;font-size:12px;line-height:1.6;font-weight:600;letter-spacing:.12em;border-radius:999px;background:var(--paper-deep);color:var(--ink)}
.tag-electric{background:var(--electric-mist);color:var(--electric-deep)}
.tag-amber{background:var(--amber-mist);color:var(--amber-deep)}
.tag-dark{background:var(--navy-soft);color:var(--white)}

/* 面板 */
.panel{background:var(--white);border:1px solid var(--line-light);border-radius:4px;padding:24px;box-shadow:0 2px 12px var(--navy-shadow-light)}
.panel-dark{background:var(--navy-soft);color:var(--white);box-shadow:inset 0 0 0 1px var(--electric-line-faint)}
.panel-light{background:var(--paper);color:var(--ink)}
.panel-slice{position:relative;background:var(--navy-soft);color:var(--white);clip-path:polygon(0 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%);padding:28px 28px 32px;box-shadow:0 12px 32px var(--navy-shadow)}

/* 章节标题 */
.section-head{display:flex;align-items:flex-end;flex-wrap:wrap;gap:10px 20px;margin-bottom:32px;position:relative}
.section-head::after{content:'';flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--line-repeat) 0 6px,transparent 6px 12px);margin-bottom:6px;min-width:40px}
.section-index{font-family:var(--font-display);font-size:13px;font-weight:700;letter-spacing:.22em;color:var(--orange);padding-bottom:2px}
.section-title{font-size:clamp(26px,4vw,38px);line-height:1.12;color:var(--ink);margin:0}

/* 面包屑 */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:4px;list-style:none;padding:0;margin:0 0 24px;font-size:13px}
.breadcrumb li{display:flex;align-items:center;gap:4px}
.breadcrumb li+li::before{content:'/';margin:0 4px;color:var(--electric)}
.breadcrumb a{color:var(--navy-soft);text-decoration:none}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:700}

/* 图片容器 */
.figure{position:relative;overflow:hidden;background:var(--paper-deep);border:1px solid var(--line-faint)}
.figure img{display:block;width:100%;height:100%;object-fit:cover}
.figure::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,transparent 55%,var(--electric-glow));pointer-events:none}
.figure-ratio-16-9{aspect-ratio:16/9}
.figure-ratio-4-3{aspect-ratio:4/3}
.figure-ratio-3-2{aspect-ratio:3/2}
.figure-ratio-1-1{aspect-ratio:1/1}
.figure-caption{position:absolute;left:0;right:0;bottom:0;padding:40px 16px 12px;font-size:13px;color:var(--white);background:linear-gradient(transparent,var(--navy-caption))}
.figure-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}

/* 网格 */
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px}
.col-span-3{grid-column:span 3}
.col-span-4{grid-column:span 4}
.col-span-6{grid-column:span 6}
.col-span-8{grid-column:span 8}
.col-span-12{grid-column:span 12}

/* 数据组件 */
.data-row{display:flex;justify-content:space-between;align-items:baseline;gap:16px;padding:10px 0;border-bottom:1px solid var(--line-faint)}
.data-row:last-child{border-bottom:none}
.data-label{font-size:14px;color:var(--text-muted)}
.data-value{font-family:var(--font-display);font-size:24px;font-weight:700;color:var(--navy)}
.panel-dark .data-label{color:var(--white-60)}
.panel-dark .data-value{color:var(--electric)}
.data-panel{background:rgba(255,255,255,.03);border-left:2px solid var(--electric);padding:16px 20px}

/* 分隔线 */
.divider{display:flex;align-items:center;gap:12px;margin:32px 0}
.divider::before,.divider::after{content:'';flex:1;height:1px;background:repeating-linear-gradient(90deg,var(--line-dash) 0 5px,transparent 5px 10px)}
.divider::marker{content:none}
.divider-dot{width:6px;height:6px;background:var(--orange);transform:rotate(45deg);position:relative}
.divider-dot::after{content:'';position:absolute;inset:-3px;border:1px solid var(--electric)}

/* 蓝图背景 */
.blueprint-grid{background-color:var(--navy);background-image:linear-gradient(var(--electric-faint) 1px,transparent 1px),linear-gradient(90deg,var(--electric-faint) 1px,transparent 1px);background-size:24px 24px}

/* 直播角标 */
.live-badge{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;font-size:12px;font-weight:700;letter-spacing:.18em;color:var(--white);background:var(--orange);clip-path:polygon(0 0,100% 0,calc(100% - 6px) 100%,0 100%);line-height:1.4}
.live-badge::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--white);animation:live-pulse 1.4s ease-in-out infinite}
@keyframes live-pulse{0%,100%{opacity:1}50%{opacity:.3}}

/* 角注 */
.corner-note{writing-mode:vertical-rl;font-size:12px;line-height:1.8;letter-spacing:.28em;color:var(--text-faint);transform:rotate(180deg)}
.dark .corner-note{color:var(--white-40)}

/* 响应式 */
@media(max-width:1024px){
  .grid-12{grid-template-columns:repeat(6,1fr)}
  .col-span-3,.col-span-4{grid-column:span 3}
  .col-span-6,.col-span-8{grid-column:span 6}
}
@media(max-width:860px){
  .header-top-inner{height:52px}
  .header-bottom-inner{height:48px;justify-content:flex-end}
  .header-status{font-size:12px}
  .site-nav{position:absolute;top:100%;left:0;right:0;z-index:300;display:block;visibility:hidden;opacity:0;transform:translateY(-10px);transition:visibility .3s ease,opacity .3s ease,transform .3s ease;pointer-events:none;background:var(--navy-soft-98);border-top:2px solid var(--orange);box-shadow:0 24px 48px rgba(0,0,0,.45);backdrop-filter:blur(10px)}
  .site-nav[data-open]{visibility:visible;opacity:1;transform:translateY(0);pointer-events:auto}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;padding:8px 0 12px}
  .nav-link{padding:15px 20px;font-size:15px;border-bottom:1px solid var(--white-06);color:var(--white-85)}
  .nav-link:hover{background:var(--electric-soft);color:var(--electric)}
  .nav-link[aria-current="page"]{color:var(--white);background:rgba(255,106,0,.08)}
  .nav-link[aria-current="page"]::after{left:auto;right:auto;bottom:auto;top:50%;width:4px;height:26px;transform:translateY(-50%);left:0;right:auto;clip-path:polygon(0 10%,100% 0,100% 90%,0 100%)}
  .nav-toggle{display:flex}
}
@media(max-width:768px){
  .grid-12{grid-template-columns:1fr}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .col-span-3,.col-span-4,.col-span-6,.col-span-8,.col-span-12{grid-column:span 1}
  .footer-top-grid{flex-direction:column;align-items:flex-start}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;gap:6px}
  .back-top{right:16px;bottom:16px}
}
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}
@media print{
  .site-header,.site-footer,.scroll-progress,.back-top{display:none!important}
  body{background:var(--white);color:#000}
}