/* 布局：顶栏、阅读进度、页脚、启动画面 */
.scroll-progress{position:fixed;top:0;left:0;height:2px;width:100%;transform-origin:0 50%;transform:scaleX(var(--p,0));background:linear-gradient(90deg,var(--spring),var(--accent));z-index:60;pointer-events:none}

.site-header{position:sticky;top:0;z-index:50;height:var(--header-h);background:var(--nav);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);border-bottom:1px solid transparent;transition:border-color .3s,transform .4s var(--ease)}
.site-header.scrolled{border-bottom-color:var(--line)}
.site-header.hidden{transform:translateY(-100%)}
.nav{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--f-display);font-weight:700;letter-spacing:.08em;font-size:15px}
.brand-mark{position:relative;width:34px;height:34px;border-radius:10px;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-family:var(--f-mono);font-weight:800;font-size:18px;overflow:hidden;transition:transform .5s var(--ease-spring)}
.brand:hover .brand-mark{transform:rotate(-12deg) scale(1.06)}
.brand-mark::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.55) 50%,transparent 70%);transform:translateX(-120%);transition:transform .8s var(--ease)}
.brand:hover .brand-mark::after{transform:translateX(120%)}
.brand small{font-family:var(--f-mono);font-weight:400;font-size:10px;letter-spacing:.12em;color:var(--muted)}

.nav-links{display:flex;align-items:center;gap:4px;position:relative}
.nav-link{position:relative;padding:8px 14px;border-radius:8px;font-size:13.5px;color:var(--muted);transition:color .25s}
.nav-link:hover,.nav-link.active{color:var(--text)}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:-2px;width:4px;height:4px;border-radius:50%;background:var(--accent);translate:-50% 0;box-shadow:0 0 10px var(--accent)}
.nav-indicator{position:absolute;top:0;height:100%;border-radius:8px;background:var(--panel-2);z-index:-1;opacity:0;transition:left .35s var(--ease),width .35s var(--ease),opacity .25s}

.nav-tools{display:flex;align-items:center;gap:8px}
.icon-btn{width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:transparent;display:grid;place-items:center;color:var(--text-2);transition:border-color .25s,background .25s,transform .25s var(--ease-spring)}
.icon-btn:hover{border-color:var(--line-2);background:var(--panel-2);transform:translateY(-1px)}
.icon-btn:active{transform:scale(.92)}
.icon-btn svg{width:17px;height:17px}
.icon-btn[aria-pressed=false] .on,.icon-btn[aria-pressed=true] .off{display:none}
.search-trigger{display:flex;align-items:center;gap:10px;height:36px;padding:0 8px 0 12px;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--muted);font-size:12.5px;min-width:200px;transition:border-color .25s}
.search-trigger:hover{border-color:var(--line-2);color:var(--text-2)}
.search-trigger svg{width:15px;height:15px}
.search-trigger kbd{margin-left:auto}
.menu-btn{display:none}

.mobile-nav{position:fixed;inset:var(--header-h) 0 auto 0;z-index:49;background:var(--nav);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--line);padding:12px 16px 20px;display:none;flex-direction:column;gap:4px}
.mobile-nav.open{display:flex;animation:drop .35s var(--ease)}
.mobile-nav a{padding:12px 14px;border-radius:10px;font-size:15px}
.mobile-nav a.active{background:var(--panel-2);color:var(--accent)}
@keyframes drop{from{opacity:0;transform:translateY(-10px)}}

.site-footer{border-top:1px solid var(--line);padding:56px 0 36px;margin-top:40px;position:relative;overflow:hidden}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{color:var(--muted);font-size:13px;margin-top:14px;max-width:320px;line-height:1.9}
.footer-col h4{font-family:var(--f-mono);font-size:11px;letter-spacing:.16em;color:var(--faint);font-weight:500;margin-bottom:16px;text-transform:uppercase}
.footer-col a{display:block;font-size:13px;color:var(--muted);padding:4px 0;transition:color .2s,transform .2s}
.footer-col a:hover{color:var(--accent);transform:translateX(3px)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:48px;padding-top:24px;border-top:1px dashed var(--line);font-family:var(--f-mono);font-size:11px;color:var(--faint);letter-spacing:.04em}
.footer-bottom .live{display:inline-flex;align-items:center;gap:8px}
.footer-bottom .live i{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 0 var(--ok);animation:ping 2s infinite}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(123,220,138,.6)}70%{box-shadow:0 0 0 8px rgba(123,220,138,0)}100%{box-shadow:0 0 0 0 rgba(123,220,138,0)}}
.footer-mega{font-family:var(--f-display);font-weight:700;font-size:clamp(64px,15vw,220px);line-height:.8;letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1px var(--line);margin-top:48px;user-select:none;white-space:nowrap;text-align:center}

/* 启动画面：模拟 Spring Boot 启动日志 */
.boot{position:fixed;inset:0;z-index:200;background:var(--bg);display:flex;align-items:center;justify-content:center;padding:24px;transition:opacity .6s var(--ease),visibility .6s}
.boot.done{opacity:0;visibility:hidden}
.boot-term{width:min(760px,100%);font-family:var(--f-mono);font-size:12px;line-height:1.75;color:var(--muted)}
.boot-banner{color:var(--c-spring);white-space:pre;font-size:11px;line-height:1.25;margin-bottom:14px}
.boot-line{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;opacity:0;animation:bootIn .25s forwards}
.boot-line .t{color:var(--faint)}
.boot-line .lv{color:var(--ok);margin:0 8px}
.boot-line .cls{color:var(--c-cloud)}
.boot-line.ok{color:var(--accent)}
.boot-skip{position:absolute;bottom:28px;left:50%;translate:-50% 0;font-family:var(--f-mono);font-size:11px;color:var(--faint);letter-spacing:.1em}
.boot-bar{height:2px;background:var(--line);margin-top:18px;border-radius:2px;overflow:hidden}
.boot-bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .2s linear}
@keyframes bootIn{to{opacity:1}}

@media (max-width:980px){
  .search-trigger{min-width:0;padding:0 10px}
  .search-trigger span,.search-trigger kbd{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  :root{--header-h:62px}
  .nav-links{display:none}
  .menu-btn{display:grid}
  .brand small{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .boot-banner{font-size:7px}
  .boot-term{font-size:10.5px}
}