/* ============================================================
   安博电竞 · ANBO LEGEND — /assets/site.css
   深夜训练室配色 · 左侧轨道导航 · Bento 信息板骨架
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}

/* ---------- 2. 设计令牌 ---------- */
:root{
  --bg:#0A0E27;
  --panel:#161C3F;
  --rail:#202A5C;
  --cyan:#2FF3E0;
  --orange:#FF7A2F;
  --violet:#7A3BFF;
  --magenta:#FF2E7A;
  --ink:#EDF0FF;
  --muted:#A7B0DB;
  --line:#3A4585;
  --green:#3BE38A;
  --grad-focus:linear-gradient(120deg,#7A3BFF 0%,#FF2E7A 100%);
  --grad-heat:linear-gradient(120deg,#FF7A2F 0%,#FF2E7A 100%);
  --grad-flow:linear-gradient(90deg,#2FF3E0 0%,#7A3BFF 55%,#FF2E7A 100%);
  --sans:"HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,"Cascadia Mono","JetBrains Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --rail-w:88px;
  --bar-h:38px;
  --mobile-bar-h:56px;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:26px;
  --ease:cubic-bezier(.22,1,.36,1);
  --shadow:0 30px 70px -40px rgba(0,0,0,.92);
}

/* ---------- 3. 基础排版 ---------- */
html{scroll-padding-top:calc(var(--mobile-bar-h) + var(--bar-h) + 16px)}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}

body{
  min-height:100vh;
  padding-top:calc(var(--mobile-bar-h) + var(--bar-h));
  background:
    radial-gradient(1100px 560px at 88% -12%,rgba(122,59,255,.20),transparent 68%),
    radial-gradient(820px 480px at 6% 104%,rgba(47,243,224,.10),transparent 70%),
    var(--bg);
  background-attachment:fixed;
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  overflow-x:hidden;
}
@media (min-width:1024px){
  :root{--bar-h:46px}
  body{padding-top:var(--bar-h);padding-left:var(--rail-w)}
  html{scroll-padding-top:calc(var(--bar-h) + 20px)}
}

h1,h2,h3,h4{font-weight:400;line-height:1.2;letter-spacing:.02em}
p{max-width:68ch}
a{color:var(--cyan);text-decoration:none}
a:hover{color:var(--ink)}
strong{font-weight:600;color:var(--ink)}
::selection{background:rgba(47,243,224,.30);color:var(--ink)}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

.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}

.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.06em}
.num-cyan{color:var(--cyan)}
.num-hot{color:var(--orange)}

/* ---------- 4. 布局容器与节奏 ---------- */
.wrap{width:min(1180px,100% - 36px);margin-inline:auto}
@media (min-width:1024px){.wrap{width:min(1180px,100% - 72px)}}

.section{position:relative;padding:clamp(52px,7vw,110px) 0}
.section--tight{padding:clamp(32px,4vw,60px) 0}

.grid{display:grid;gap:18px;grid-template-columns:minmax(0,1fr)}
@media (min-width:760px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--bento{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-2{grid-column:span 2}
  .span-3{grid-column:span 3}
  .span-4{grid-column:span 4}
  .span-6{grid-column:span 6}
}
.grid--bento{display:grid}

/* ---------- 5. 章节与标题系统 ---------- */
.display{
  margin:0;
  font-size:clamp(44px,7.6vw,120px);
  font-weight:200;
  line-height:.96;
  letter-spacing:.06em;
  text-transform:uppercase;
}
.display--soft{font-weight:200;text-transform:none;letter-spacing:.04em}
.lede{font-size:clamp(16px,1.5vw,18px);line-height:1.78;color:var(--muted)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;letter-spacing:.28em;text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;flex:0 0 auto}
.eyebrow--orange{color:var(--orange)}

.chapter{display:flex;align-items:baseline;gap:clamp(12px,2vw,22px);flex-wrap:wrap;margin-bottom:20px}
.chapter__num{
  font-family:var(--mono);font-weight:200;
  font-size:clamp(44px,6vw,84px);line-height:1;
  color:rgba(47,243,224,.22);
  -webkit-text-stroke:1px rgba(47,243,224,.55);
  letter-spacing:.02em;
}
.chapter__title{margin:0;font-size:clamp(22px,2.6vw,40px);font-weight:300;letter-spacing:.08em}

/* ---------- 6. 卡片 · 状态 · 按钮 ---------- */
.tile{
  position:relative;
  padding:clamp(18px,2vw,26px);
  background:var(--panel);
  border:1px solid var(--rail);
  border-radius:var(--r-lg);
  overflow:hidden;
  transition:transform .32s var(--ease),border-color .32s var(--ease),background .32s var(--ease);
}
.tile:nth-child(3n+1){border-radius:26px 14px 26px 14px}
.tile:nth-child(3n+2){border-radius:14px 26px 14px 26px}
.tile:nth-child(3n+3){border-radius:20px}
.tile:hover{transform:translateY(-3px);border-color:rgba(47,243,224,.42)}
.tile--focus{
  background:linear-gradient(150deg,rgba(122,59,255,.28),rgba(255,46,122,.14) 55%,var(--panel) 100%);
  border-color:rgba(122,59,255,.45);
}
.tile--flat:hover{transform:none}

.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background:rgba(22,28,63,.85);
  font-size:11px;letter-spacing:.16em;color:var(--muted);white-space:nowrap;
}
.pill--cyan{border-color:rgba(47,243,224,.42);color:var(--cyan)}
.pill--orange{border-color:rgba(255,122,47,.45);color:var(--orange)}
.pill--green{border-color:rgba(59,227,138,.42);color:var(--green)}

.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--muted);flex:0 0 auto}
.dot--cyan{background:var(--cyan);box-shadow:0 0 0 4px rgba(47,243,224,.16);animation:breathe 2.8s var(--ease) infinite}
.dot--green{background:var(--green);box-shadow:0 0 0 4px rgba(59,227,138,.16)}
.dot--orange{background:var(--orange);box-shadow:0 0 0 4px rgba(255,122,47,.18)}
@keyframes breathe{0%,100%{opacity:1}50%{opacity:.35}}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:12px 22px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:600;letter-spacing:.08em;text-decoration:none;cursor:pointer;
  transition:transform .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),color .28s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--grad-heat);color:#0A0E27}
.btn--primary:hover{color:#0A0E27}
.btn--ghost{background:rgba(22,28,63,.72);border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:rgba(47,243,224,.5);color:var(--cyan)}
.btn--cyan{background:rgba(47,243,224,.10);border-color:rgba(47,243,224,.45);color:var(--cyan)}
.btn--cyan:hover{background:rgba(47,243,224,.20);color:var(--cyan)}

/* ---------- 7. 面包屑 ---------- */
.crumbs{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--line)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--cyan)}

/* ---------- 8. 标签页 ---------- */
.tabs{position:relative}
.tablist{display:flex;gap:4px;border-bottom:1px solid var(--rail);overflow-x:auto;scrollbar-width:none}
.tablist::-webkit-scrollbar{display:none}
.tab{
  appearance:none;background:none;border:0;border-bottom:2px solid transparent;
  padding:12px 16px;cursor:pointer;white-space:nowrap;
  font-size:12px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);
  transition:color .26s var(--ease),border-color .26s var(--ease);
}
.tab:hover{color:var(--ink)}
.tab[aria-selected="true"],.tab.is-active{color:var(--cyan);border-bottom-color:var(--cyan)}
.tabpanel{padding-top:clamp(18px,2.4vw,30px);animation:fadeUp .38s var(--ease) both}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- 9. 图片容器（供页面阶段放置素材） ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  border:1px solid var(--rail);border-radius:var(--r-lg);
  background:
    radial-gradient(120% 120% at 18% 0%,rgba(122,59,255,.38),transparent 62%),
    radial-gradient(90% 90% at 100% 100%,rgba(47,243,224,.16),transparent 60%),
    linear-gradient(160deg,#161C3F,#0A0E27);
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(58,69,133,.30) 1px,transparent 1px),linear-gradient(90deg,rgba(58,69,133,.30) 1px,transparent 1px);
  background-size:52px 52px;opacity:.5;
}
.media__img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--hero{aspect-ratio:5/6}
@media (min-width:760px){.media--hero{aspect-ratio:4/3}}
.media__badge{
  position:absolute;z-index:2;top:12px;left:12px;
  padding:4px 10px;border-radius:999px;
  background:rgba(10,14,39,.78);border:1px solid rgba(47,243,224,.45);
  font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--cyan);
}
.media__cap{
  position:absolute;z-index:2;left:0;right:0;bottom:0;
  padding:26px 16px 14px;
  background:linear-gradient(transparent,rgba(10,14,39,.92));
  font-size:12px;letter-spacing:.16em;color:var(--muted);
}

/* ---------- 10. 装饰层 ---------- */
.fx-grid{
  position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(58,69,133,.26) 1px,transparent 1px),linear-gradient(90deg,rgba(58,69,133,.26) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(80% 62% at 50% 28%,#000,transparent 76%);
  mask-image:radial-gradient(80% 62% at 50% 28%,#000,transparent 76%);
}
.fx-slice{
  position:absolute;inset:0;pointer-events:none;z-index:0;
  background:var(--grad-focus);opacity:.16;
  clip-path:polygon(0 0,100% 0,100% 58%,0 100%);
}

/* ---------- 11. 头部：状态条 ---------- */
.skip-link{
  position:fixed;top:-120px;left:16px;z-index:200;
  padding:12px 20px;border-radius:0 0 12px 12px;
  background:var(--cyan);color:#04121A;font-size:13px;font-weight:600;letter-spacing:.1em;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:0;color:#04121A}

.site-header{position:relative;z-index:70}

.status-bar{
  position:fixed;z-index:72;
  top:var(--mobile-bar-h);left:0;right:0;height:var(--bar-h);
  display:flex;align-items:center;gap:22px;
  padding:0 14px;
  background:rgba(10,14,39,.88);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rail);
  font-size:11px;letter-spacing:.16em;color:var(--muted);
  white-space:nowrap;overflow-x:auto;scrollbar-width:none;
  transition:box-shadow .3s var(--ease),background .3s var(--ease);
}
.status-bar::-webkit-scrollbar{display:none}
.status-item{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto}
.status-item .mono{color:var(--ink);letter-spacing:.1em}
.status-item--hot{color:var(--orange)}
.status-item--hot .mono{color:var(--orange)}
.is-scrolled .status-bar{background:rgba(10,14,39,.96);box-shadow:0 18px 40px -34px #000}

/* ---------- 12. 头部：移动端顶栏 ---------- */
.mobile-bar{
  position:fixed;z-index:95;top:0;left:0;right:0;height:var(--mobile-bar-h);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:0 12px;
  background:rgba(10,14,39,.94);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rail);
}
.nav-toggle{
  width:44px;height:44px;padding:0;display:grid;place-items:center;
  background:rgba(22,28,63,.9);border:1px solid var(--line);border-radius:12px;cursor:pointer;
  transition:border-color .26s var(--ease),background .26s var(--ease);
}
.nav-toggle:hover{border-color:rgba(47,243,224,.55)}
.nav-toggle__bars{display:block;width:20px}
.nav-toggle__bars span{
  display:block;height:2px;border-radius:2px;background:var(--cyan);margin:4px 0;
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.mobile-brand{
  display:flex;flex-direction:column;align-items:flex-end;line-height:1.25;
  font-size:14px;font-weight:600;letter-spacing:.16em;color:var(--ink);
}
.mobile-brand:hover{color:var(--cyan)}
.mobile-brand__en{font-family:var(--mono);font-size:9px;letter-spacing:.3em;color:var(--cyan)}

/* ---------- 13. 头部：轨道导航（移动端 = 抽屉） ---------- */
.rail{
  position:fixed;z-index:90;top:0;right:0;bottom:0;
  width:min(86vw,340px);
  display:flex;flex-direction:column;gap:20px;
  padding:calc(var(--mobile-bar-h) + 16px) 18px 26px;
  background:linear-gradient(180deg,#141A3C 0%,#0A0E27 100%);
  border-left:1px solid var(--rail);
  box-shadow:var(--shadow);
  overflow-y:auto;
  transform:translateX(104%);
  visibility:hidden;
  transition:transform .4s var(--ease),visibility .4s var(--ease);
}
.rail[data-open]{transform:translateX(0);visibility:visible}
.rail-brand{
  display:flex;flex-direction:column;gap:6px;
  padding-bottom:16px;border-bottom:1px solid var(--rail);color:var(--ink);
}
.rail-brand:hover{color:var(--cyan)}
.rail-brand__cn{font-size:18px;font-weight:600;letter-spacing:.16em}
.rail-brand__en{font-family:var(--mono);font-size:9px;letter-spacing:.3em;color:var(--cyan)}

.rail-nav{flex:1 1 auto}
.rail-list{display:flex;flex-direction:column;gap:6px}
.rail-link{
  position:relative;display:flex;align-items:center;gap:14px;
  padding:13px 14px;border-radius:14px;
  color:var(--ink);font-size:15px;letter-spacing:.06em;
  transition:background .26s var(--ease),color .26s var(--ease),transform .26s var(--ease);
}
.rail-link:hover{background:rgba(47,243,224,.08);color:var(--cyan);transform:translateX(2px)}
.rail-index{font-size:10px;letter-spacing:.2em;color:var(--muted)}
.rail-label{writing-mode:horizontal-tb}
.rail-link[aria-current="page"]{
  color:var(--cyan);
  background:linear-gradient(90deg,rgba(47,243,224,.18),rgba(47,243,224,0));
  box-shadow:inset 2px 0 0 var(--cyan);
}
.rail-link[aria-current="page"] .rail-index{color:var(--cyan)}

.rail-cta{
  margin-top:auto;display:inline-flex;align-items:center;justify-content:center;
  padding:14px 18px;border-radius:999px;
  background:var(--grad-heat);color:#0A0E27;
  font-size:14px;font-weight:700;letter-spacing:.1em;text-align:center;
  transition:filter .26s var(--ease),transform .26s var(--ease);
}
.rail-cta:hover{color:#0A0E27;filter:brightness(1.08);transform:translateY(-2px)}

.nav-scrim{
  position:fixed;inset:0;z-index:85;
  background:rgba(6,8,22,.74);
  -webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);
  opacity:0;transition:opacity .3s var(--ease);
}
.nav-scrim.is-on{opacity:1}
html.nav-open,html.nav-open body{overflow:hidden}

@media (min-width:1024px){
  .mobile-bar{display:none}
  .nav-scrim{display:none!important}
  html.nav-open,html.nav-open body{overflow:visible}
  .rail{
    left:0;right:auto;width:var(--rail-w);
    padding:calc(var(--bar-h) + 22px) 8px 20px;
    gap:18px;
    transform:none;visibility:visible;
    border-left:0;border-right:1px solid var(--rail);
    background:linear-gradient(180deg,#141A3C 0%,#0B1030 100%);
    box-shadow:none;
    overflow:visible;
  }
  .rail-brand{padding-bottom:14px;align-items:center;text-align:center;width:100%}
  .rail-brand__cn{font-size:13px;letter-spacing:.1em;line-height:1.5}
  .rail-brand__en{font-size:8px;letter-spacing:.22em}
  .rail-nav{width:100%;overflow-y:auto;scrollbar-width:none}
  .rail-nav::-webkit-scrollbar{display:none}
  .rail-list{gap:2px;align-items:center}
  .rail-link{
    flex-direction:column;justify-content:center;gap:10px;
    width:100%;padding:12px 4px;border-radius:14px;
  }
  .rail-link:hover{transform:none}
  .rail-label{writing-mode:vertical-rl;text-orientation:mixed;font-size:12px;letter-spacing:.16em;line-height:1}
  .rail-cta{
    writing-mode:vertical-rl;text-orientation:mixed;
    padding:18px 10px;font-size:12px;letter-spacing:.2em;border-radius:999px;
  }
}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:clamp(48px,8vw,120px);
  background:linear-gradient(180deg,rgba(22,28,63,.55) 0%,rgba(10,14,39,.99) 100%);
  border-top:1px solid var(--rail);
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan) 30%,var(--magenta) 72%,transparent);
  opacity:.65;
}
.footer-inner{width:min(1180px,100% - 36px);margin-inline:auto;padding-top:clamp(42px,6vw,84px)}
@media (min-width:1024px){.footer-inner{width:min(1180px,100% - 72px)}}

.footer-top{display:grid;gap:32px;grid-template-columns:minmax(0,1fr)}
@media (min-width:640px){.footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-top{grid-template-columns:1.5fr repeat(4,minmax(0,1fr));gap:26px}}

.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.footer-logo{font-size:22px;font-weight:600;letter-spacing:.14em}
.footer-en{font-size:10px;letter-spacing:.32em;color:var(--cyan)}
.footer-note{font-size:14px;line-height:1.7;color:var(--muted);max-width:30ch}

.footer-col{min-width:0}
.footer-title{
  margin-bottom:14px;
  font-size:11px;font-weight:600;letter-spacing:.28em;text-transform:uppercase;color:var(--orange);
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{color:var(--muted);font-size:15px;transition:color .22s var(--ease)}
.footer-list a:hover,.footer-list a[aria-current="page"]{color:var(--cyan)}

.footer-contact{display:flex;flex-direction:column;gap:16px}
.footer-contact-item{display:flex;flex-direction:column;gap:6px;align-items:flex-start}
.footer-contact-label{font-size:10px;letter-spacing:.24em;color:var(--muted)}
.footer-contact-value{font-size:14px;color:var(--ink);word-break:break-all;max-width:100%}
.footer-icp{margin-top:18px;font-size:11px;letter-spacing:.14em;color:var(--muted)}

.copy-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  background:rgba(47,243,224,.08);border:1px solid rgba(47,243,224,.35);
  color:var(--cyan);font-size:11px;letter-spacing:.16em;cursor:pointer;
  transition:background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.copy-btn:hover{background:rgba(47,243,224,.2)}
.copy-btn.is-copied{background:rgba(59,227,138,.16);border-color:rgba(59,227,138,.55);color:var(--green)}

.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 22px;
  margin-top:clamp(34px,5vw,62px);padding:18px 0 26px;
  border-top:1px solid var(--rail);
  font-size:12px;letter-spacing:.1em;color:var(--muted);
}
.footer-bottom__text{margin:0}
.copy-status{font-size:11px;letter-spacing:.14em;color:var(--green)}

/* ---------- 15. 动效协议 ---------- */
.js [data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .44s var(--ease),transform .44s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
.js [data-reveal].is-visible{opacity:1;transform:none}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:120;
  background:var(--grad-flow);
  transform:scaleX(0);transform-origin:0 50%;
  pointer-events:none;
}

/* ---------- 16. 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .js [data-reveal]{opacity:1!important;transform:none!important}
  .dot--cyan{animation:none}
}