/* ============================================================
   爱游戏赛事 · /assets/site.css
   共享层：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用组件
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --c-ink:#0B1220;
  --c-panel:#131C2E;
  --c-panel-2:#0E1729;
  --c-line:#243450;
  --c-green:#3BF59A;
  --c-orange:#FF8A3D;
  --c-cyan:#5FD8FF;
  --c-text:#E7EDF7;
  --c-text-soft:#C6D3E7;
  --c-muted:#8DA1BF;
  --c-danger:#FF5C6C;
  --c-paper:#F5F8FF;

  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --r-pill:999px;

  --ff-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --ff-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --ff-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --fs-13:13px; --fs-14:14px; --fs-17:17px; --fs-22:22px;
  --fs-32:32px; --fs-48:48px; --fs-64:64px;

  --maxw:1240px;
  --gut:clamp(18px,4vw,40px);
  --ease:cubic-bezier(.4,.1,.2,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-ink);
  color:var(--c-text);
  font-family:var(--ff-body);
  font-size:var(--fs-17);
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,picture,svg,video{max-width:100%;display:block}
h1,h2,h3,h4,h5{margin:0;font-family:var(--ff-head);font-weight:900;line-height:1.16;letter-spacing:-.02em;color:#fff}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:3px;border-radius:8px}
::selection{background:var(--c-green);color:#04211A}

/* ---------- 3. 中文排版与通用类 ---------- */
.mono{font-family:var(--ff-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.eyebrow{
  font-size:var(--fs-13);
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--c-cyan);
}
.lead{
  font-size:clamp(17px,2.2vw,22px);
  line-height:1.6;
  color:var(--c-text-soft);
  max-width:48ch;
}
.prose{max-width:68ch;color:var(--c-text-soft)}
.prose p + p{margin-top:1.1em}
.prose strong{color:#fff}
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gut);
}
.section{padding-block:clamp(44px,7vw,96px)}
.divider{
  height:1px;border:0;margin-block:clamp(26px,4vw,54px);
  background:linear-gradient(90deg,transparent,var(--c-line) 12%,var(--c-line) 88%,transparent);
}

/* ---------- 4. 网格与分屏 ---------- */
.grid{display:grid;gap:clamp(18px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(232px,1fr))}
.split{display:grid;gap:clamp(20px,3vw,40px);grid-template-columns:1fr}
@media (min-width:900px){
  .split{grid-template-columns:5fr 7fr}
  .split--rev{grid-template-columns:7fr 5fr}
}

/* ---------- 5. 通用组件 ---------- */
.panel{
  background:var(--c-panel);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:clamp(20px,3vw,32px);
}
.panel--paper{background:var(--c-paper);color:#101A2C;border-color:rgba(11,18,32,.14)}
.panel--paper h2,.panel--paper h3{color:#0B1220}
.panel--paper .prose{color:#33425C}
.panel--paper .eyebrow{color:#5A6B85}

.card{
  position:relative;
  display:flex;flex-direction:column;gap:12px;
  padding:22px;
  background:linear-gradient(160deg,rgba(19,28,46,.96),rgba(11,18,32,.96));
  border:1px solid var(--c-line);
  border-radius:var(--r-md);
  transition:transform .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(95,216,255,.5)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:16px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn--primary{background:var(--c-green);color:#04211A;box-shadow:0 10px 30px rgba(59,245,154,.18)}
.btn--primary:hover{transform:translateY(-2px);background:#5bffb0}
.btn--accent{background:var(--c-orange);color:#2A1102}
.btn--accent:hover{transform:translateY(-2px);background:#ffa163}
.btn--ghost{border-color:var(--c-line);color:var(--c-text)}
.btn--ghost:hover{border-color:var(--c-cyan);color:var(--c-cyan)}

.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:var(--r-pill);
  font-size:var(--fs-13);font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.pill--ghost{border-color:var(--c-line);color:var(--c-muted)}
.pill--ghost:hover{color:var(--c-cyan);border-color:var(--c-cyan)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
  border:1px solid transparent;
}
.tag--green{color:var(--c-green);border-color:rgba(59,245,154,.4);background:rgba(59,245,154,.1)}
.tag--orange{color:var(--c-orange);border-color:rgba(255,138,61,.4);background:rgba(255,138,61,.1)}
.tag--cyan{color:var(--c-cyan);border-color:rgba(95,216,255,.4);background:rgba(95,216,255,.1)}

.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:var(--fs-14);color:var(--c-muted)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb a{color:var(--c-cyan)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb li:not(:last-child)::after{content:"/";margin-left:8px;color:var(--c-line)}

/* 图容器基础规则（页面阶段放图片） */
.media{
  position:relative;overflow:hidden;
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  aspect-ratio:16/9;
  background:
    radial-gradient(120% 90% at 18% 0%,rgba(59,245,154,.12),transparent 58%),
    radial-gradient(90% 80% at 100% 100%,rgba(255,138,61,.12),transparent 62%),
    linear-gradient(160deg,#131C2E,#0B1220);
}
.media > img,.media > svg{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media__badge{position:absolute;top:16px;left:16px;z-index:2}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:16px 18px 14px;font-size:var(--fs-13);color:var(--c-text-soft);
  background:linear-gradient(0deg,rgba(11,18,32,.92),rgba(11,18,32,0));
}

/* 章节目录 */
.toc{
  border:1px solid var(--c-line);border-radius:var(--r-md);
  background:rgba(19,28,46,.7);
  padding:16px;
}
.toc__title{
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-muted);margin-bottom:12px;
}
.toc a{
  display:flex;gap:10px;align-items:baseline;
  padding:8px 12px;border-radius:12px;
  font-size:var(--fs-14);color:var(--c-muted);
  border-left:2px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.toc a:hover{color:var(--c-text);background:rgba(36,52,80,.5)}
.toc a[aria-current="true"]{color:#fff;background:rgba(59,245,154,.1);border-left-color:var(--c-green)}

/* ---------- 6. 跳过链接 ---------- */
.skip-link{
  position:fixed;left:16px;top:-70px;z-index:100;
  padding:11px 20px;border-radius:var(--r-pill);
  background:var(--c-green);color:#04211A;
  font-size:var(--fs-14);font-weight:700;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:16px}

/* ---------- 7. 页头 ---------- */
.site-header{
  position:relative;
  background:linear-gradient(180deg,#0E1729 0%,#0B1220 100%);
  border-bottom:1px solid var(--c-line);
}
.site-header::before{
  content:"";position:absolute;right:-160px;top:-210px;
  width:520px;height:520px;border-radius:50%;
  border:1px dashed rgba(36,52,80,.9);
  pointer-events:none;
}
html[data-nav-locked]{overflow:hidden}
html[data-nav-locked] .site-header::after{
  content:"";position:fixed;inset:0;z-index:70;
  background:rgba(6,11,20,.74);
}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:60;
  background:rgba(36,52,80,.55);pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--c-green),var(--c-cyan) 58%,var(--c-orange));
}

.utility-strip{
  position:relative;z-index:2;
  padding-block:7px;
  background:linear-gradient(90deg,rgba(19,28,46,.9),rgba(11,18,32,.9));
  border-bottom:1px solid rgba(36,52,80,.75);
}
.utility-strip__inner{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between}
.utility-strip__meta{
  display:flex;align-items:center;gap:10px;
  font-size:var(--fs-13);color:var(--c-muted);letter-spacing:.04em;
}
.utility-strip__meta .mono{color:var(--c-green);font-weight:700}
.utility-strip__dot{
  width:8px;height:8px;border-radius:50%;background:var(--c-green);
  box-shadow:0 0 0 4px rgba(59,245,154,.16);
  animation:status-pulse 3.6s ease-in-out infinite;
}
@keyframes status-pulse{0%,100%{opacity:1}50%{opacity:.45}}
.utility-strip__links{display:flex;flex-wrap:wrap;gap:8px}

.masthead{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1fr auto;
  align-items:center;gap:18px 32px;
  padding-block:22px 24px;
}
.masthead__brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.brand{display:flex;align-items:center;gap:14px}
.brand__mark{
  position:relative;flex:0 0 44px;width:44px;height:44px;
  border-radius:var(--r-sm);
  background:linear-gradient(150deg,#3BF59A,#0FA96A);
  box-shadow:0 0 0 1px rgba(59,245,154,.35),0 10px 26px rgba(59,245,154,.18);
}
.brand__mark::before{
  content:"";position:absolute;left:50%;top:50%;
  width:20px;height:2px;border-radius:2px;background:#062018;
  transform:translate(-50%,-50%) rotate(-32deg);
}
.brand__mark::after{
  content:"";position:absolute;left:50%;top:50%;
  width:6px;height:6px;border-radius:50%;background:#062018;
  transform:translate(-50%,-50%);
}
.brand__text{display:flex;flex-direction:column;gap:2px}
.brand__name{font-family:var(--ff-head);font-size:22px;font-weight:900;letter-spacing:.02em;color:#fff}
.brand__line{font-size:12.5px;letter-spacing:.08em;color:var(--c-muted)}

.nav-toggle{
  justify-self:end;
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 16px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-panel);
  font-size:var(--fs-14);font-weight:700;color:var(--c-text);
  position:relative;z-index:90;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:var(--c-cyan);transition:transform .25s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg)}

.primary-nav{
  position:fixed;top:0;left:0;z-index:80;
  width:min(88vw,360px);height:100vh;height:100dvh;
  padding:calc(var(--gut) + 10px) var(--gut) 44px;
  overflow-y:auto;
  background:linear-gradient(180deg,#101A2C,#0B1220);
  border-right:1px solid var(--c-line);
  box-shadow:24px 0 60px rgba(4,8,16,.5);
  transform:translateX(-102%);
  visibility:hidden;
  transition:transform .34s var(--ease),visibility .34s linear;
}
.primary-nav[data-open]{transform:translateX(0);visibility:visible}
.primary-nav__label{
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-muted);margin-bottom:14px;
}
.nav-list{display:grid;gap:4px}
.nav-list__link{
  display:flex;align-items:center;gap:12px;
  padding:12px 14px;border-radius:var(--r-sm);
  border:1px solid transparent;
  font-size:16px;font-weight:500;color:#D6E1F2;
  transition:background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.nav-list__link:hover{background:var(--c-panel);border-color:var(--c-line);color:#fff}
.nav-list__num{font-family:var(--ff-mono);font-size:12px;letter-spacing:.04em;color:var(--c-cyan)}
.nav-list__link[aria-current="page"]{
  background:linear-gradient(90deg,rgba(59,245,154,.16),rgba(59,245,154,0));
  border-color:rgba(59,245,154,.42);
  color:#fff;font-weight:700;
}
.nav-list__link[aria-current="page"] .nav-list__num{color:var(--c-green)}
.nav-list__link[aria-current="page"]::after{
  content:"";margin-left:auto;width:7px;height:7px;border-radius:50%;
  background:var(--c-green);box-shadow:0 0 0 4px rgba(59,245,154,.18);
}

@media (min-width:980px){
  .masthead{grid-template-columns:minmax(230px,1fr) minmax(0,1.9fr);align-items:start;padding-block:28px 30px}
  .nav-toggle{display:none}
  .primary-nav{
    position:static;width:auto;height:auto;padding:0;
    background:none;border:0;box-shadow:none;overflow:visible;
    transform:none;visibility:visible;transition:none;
  }
  .nav-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 20px}
  .nav-list__link{padding:11px 14px}
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,8vw,110px);
  background:linear-gradient(180deg,#0B1220 0%,#0E1729 58%,#0A101C 100%);
  border-top:1px solid var(--c-line);
}
.footer-arc{
  position:absolute;left:50%;top:-300px;
  width:760px;height:760px;margin-left:-380px;
  border-radius:50%;border:1px dashed rgba(36,52,80,.85);
  pointer-events:none;
}
.footer-top{
  position:relative;z-index:2;
  display:grid;gap:clamp(26px,4vw,40px);
  padding-block:clamp(42px,6vw,72px) 34px;
}
.footer-brand__name{
  font-family:var(--ff-head);font-size:clamp(26px,4vw,36px);font-weight:900;
  letter-spacing:-.01em;color:#fff;
}
.footer-brand__note{margin-top:12px;max-width:36ch;font-size:15px;color:var(--c-muted)}
.footer-brand__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.footer-grid{display:grid;gap:24px;grid-template-columns:1fr}
.footer-col__title{
  font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-cyan);margin-bottom:14px;
}
.footer-links li + li{margin-top:10px}
.footer-links a{
  display:inline-block;font-size:15px;color:var(--c-text-soft);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-links a:hover{color:var(--c-green);border-bottom-color:rgba(59,245,154,.5)}
.footer-contact__line{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:10px;font-size:14.5px;color:var(--c-text-soft);
}
.footer-contact__k{color:var(--c-muted);flex:0 0 auto}
.footer-bottom{
  position:relative;z-index:2;
  display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between;
  padding-block:20px 28px;
  border-top:1px solid var(--c-line);
  font-size:var(--fs-13);color:var(--c-muted);
}
.footer-legal{font-family:var(--ff-mono);letter-spacing:.02em}

.to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:65;
  display:inline-flex;align-items:center;gap:9px;
  padding:11px 18px;border-radius:var(--r-pill);
  background:rgba(19,28,46,.94);border:1px solid var(--c-line);
  color:var(--c-text);font-size:var(--fs-14);font-weight:700;
  backdrop-filter:blur(6px);
  opacity:0;pointer-events:none;transform:translateY(14px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.to-top.is-on{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{color:var(--c-green);border-color:rgba(59,245,154,.55)}
.to-top__arrow{
  width:9px;height:9px;
  border-left:2px solid currentColor;border-top:2px solid currentColor;
  transform:rotate(45deg);margin-top:3px;
}

@media (min-width:640px){
  .footer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:1000px){
  .footer-top{grid-template-columns:1.15fr 1.9fr 1fr}
}

/* ---------- 9. 入场显现 ---------- */
.js-ready [data-reveal]{
  opacity:0;transform:translateY(24px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.js-ready [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 10. 响应式收敛 ---------- */
@media (max-width:979px){
  .brand__name{font-size:20px}
  .site-header::before{width:360px;height:360px;right:-140px;top:-170px}
}
@media (max-width:560px){
  body{font-size:16px;line-height:1.72}
  .masthead{padding-block:18px 20px}
  .utility-strip__meta{font-size:12px}
  .masthead__brand{gap:14px}
  .btn{padding:12px 20px;font-size:15px}
  .footer-bottom{justify-content:flex-start}
}

/* ---------- 11. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-ready [data-reveal]{opacity:1;transform:none}
  .primary-nav{transition:none}
}