/* ==========================================================================
   KAIYUN 赛后数据档案室 /assets/site.css
   共享外壳：reset、设计变量、中文排版、头部、页脚、通用组件、图片容器
   ========================================================================== */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:#0B2E2A;
  --cream:#F5F0E6;
  --brown:#211A17;
  --paper:#F7F8F5;
  --cyan:#3DE0D2;
  --orange:#FF6A2B;
  --teal-gray:#9AB7B0;
  --teal-deep:#144A42;
  --amber:#F2C14E;
  --rose:#D94F5C;

  --line:rgba(33,26,23,.16);
  --line-soft:rgba(33,26,23,.08);
  --line-dark:rgba(154,183,176,.26);
  --cream-78:rgba(245,240,230,.78);
  --cream-62:rgba(245,240,230,.62);

  --font-head:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC",sans-serif;
  --font-body:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans SC",sans-serif;
  --font-num:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --font-label:"Inter","Helvetica Neue",Arial,"Noto Sans SC",sans-serif;

  --max:1440px;
  --gutter:clamp(20px,5vw,96px);
  --gutter-head:clamp(14px,3vw,40px);
  --radius:2px;
  --dur:.18s;
  --shadow-card:0 1px 0 var(--line-soft),0 20px 34px -28px rgba(11,46,42,.6);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:84px;
}
body{
  margin:0;
  background:var(--cream);
  color:var(--brown);
  font-family:var(--font-body);
  font-size:clamp(16px,1.05vw,17.5px);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
main{display:block}
img,svg,video{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
button{font:inherit;color:inherit}
a{color:var(--teal-deep);text-decoration-thickness:1px;text-underline-offset:3px}
::selection{background:var(--cyan);color:var(--ink)}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:1px}
.site-header :focus-visible,
.site-footer :focus-visible{outline-color:var(--cyan)}
hr{border:0}

/* ---------- 3. 中文排版与字级 ---------- */
h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.12;
  letter-spacing:-.015em;
  margin:0 0 .5em;
  text-wrap:balance;
}
h1{font-size:clamp(2.35rem,5vw,3.4rem);line-height:1.05}
h2{font-size:clamp(1.85rem,3vw,2.25rem)}
h3{font-size:clamp(1.3rem,2vw,1.6rem);font-weight:800}
h4{font-size:1.125rem;font-weight:800;letter-spacing:.01em}
p+p{margin-top:.95em}
.display{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(2.9rem,8vw,6rem);
  line-height:.94;
  letter-spacing:-.035em;
  margin:0;
  text-wrap:balance;
}
.num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:-.01em;
}
.label{
  display:inline-block;
  font-family:var(--font-label);
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--teal-deep);
}
.lead{
  font-size:clamp(1.05rem,1.5vw,1.25rem);
  line-height:1.7;
  color:rgba(33,26,23,.78);
  max-width:62ch;
}

/* ---------- 4. 布局骨架 ---------- */
.wrap{
  width:min(var(--max),100% - (var(--gutter) * 2));
  margin-inline:auto;
}
.section{padding-block:clamp(48px,7vw,96px)}
.section--dark{background:var(--ink);color:var(--cream)}
.section--dark h1,.section--dark h2,.section--dark h3{color:var(--cream)}
.section--dark .lead{color:var(--cream-78)}
.section--paper{background:var(--paper)}
.rule{height:1px;background:var(--line);margin-block:clamp(24px,4vw,48px)}
.section-head{
  display:grid;
  gap:10px;
  padding-top:14px;
  border-top:1px solid var(--line);
  margin-bottom:clamp(18px,3vw,34px);
}
.section--dark .section-head{border-top-color:var(--line-dark)}
.section-head h2{margin:0}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-label);
  font-size:11px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--teal-deep);
}
.kicker::before{
  content:"";
  width:22px;
  height:2px;
  background:var(--orange);
  flex:0 0 auto;
}
.section--dark .kicker{color:var(--cyan)}

.grid{display:grid;gap:clamp(16px,2.2vw,28px)}
.cols-2{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.cols-3{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.cols-4{grid-template-columns:repeat(auto-fit,minmax(min(100%,190px),1fr))}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
@media (max-width:820px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
}

/* ---------- 5. 通用组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:13px 24px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-head);
  font-size:15px;
  font-weight:800;
  letter-spacing:.04em;
  text-decoration:none;
  cursor:pointer;
  transition:background var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease,transform var(--dur) ease,box-shadow var(--dur) ease;
}
.btn-primary{background:var(--orange);color:var(--brown);border-color:var(--orange)}
.btn-primary:hover{background:#ff8352;transform:translate(-1px,-1px);box-shadow:4px 4px 0 rgba(11,46,42,.85)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(11,46,42,.42)}
.btn-ghost:hover{background:var(--ink);color:var(--cream);border-color:var(--ink)}
.section--dark .btn-ghost{color:var(--cream);border-color:rgba(245,240,230,.44)}
.section--dark .btn-ghost:hover{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid rgba(20,74,66,.34);
  border-radius:999px;
  background:rgba(61,224,210,.09);
  font-family:var(--font-label);
  font-size:11px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--teal-deep);
  white-space:nowrap;
}
.tag--live{background:rgba(61,224,210,.16);border-color:rgba(61,224,210,.6);color:#0d5a52}
.tag--check{background:rgba(242,193,78,.18);border-color:rgba(242,193,78,.75);color:#6a4c05}
.section--dark .tag{border-color:rgba(61,224,210,.45);color:var(--cyan);background:rgba(61,224,210,.1)}

.breadcrumbs{
  font-family:var(--font-label);
  font-size:11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:rgba(33,26,23,.6);
}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs li+li::before{content:"/";margin-right:8px;color:var(--orange)}
.breadcrumbs a{color:inherit;text-decoration:none;border-bottom:1px solid transparent}
.breadcrumbs a:hover{border-bottom-color:currentColor}
.breadcrumbs [aria-current="page"]{color:var(--brown);font-weight:700}

.card{
  position:relative;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(18px,2.2vw,26px);
  box-shadow:var(--shadow-card);
}
.card--dark{background:var(--teal-deep);color:var(--cream);border-color:rgba(61,224,210,.28)}
.card--dark h3,.card--dark h4{color:var(--cream)}
.card-title{
  font-family:var(--font-head);
  font-size:clamp(1.15rem,1.7vw,1.4rem);
  font-weight:800;
  line-height:1.28;
  letter-spacing:-.01em;
  margin:0 0 8px;
}

.prose{max-width:68ch}
.prose p+p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.8em}
.prose ul{list-style:disc;padding-left:1.15em;margin-block:1em}
.prose li+li{margin-top:.4em}
.prose blockquote{
  margin:1.4em 0;
  padding:14px 20px;
  border-left:3px solid var(--orange);
  background:rgba(61,224,210,.07);
  font-size:1.02em;
}

/* 图片容器基础规则 */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:var(--frame-ratio,16 / 9);
  background:var(--teal-deep);
  border-radius:var(--radius);
  border:1px solid rgba(20,74,42,.35);
}
.media-frame > img,
.media-frame > picture,
.media-frame > picture > img,
.media-frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(135deg,rgba(61,224,210,.16) 0 11%,rgba(61,224,210,0) 11.4% 100%),
             linear-gradient(315deg,rgba(255,106,43,.18) 0 8%,rgba(255,106,43,0) 8.4% 100%);
}
.media-frame--wide{--frame-ratio:21 / 9}
.media-frame--tall{--frame-ratio:3 / 4}
.media-frame--square{--frame-ratio:1 / 1}

/* 章节目录跟随 */
.section-index{
  position:sticky;
  top:calc(56px + 16px);
  align-self:start;
  font-family:var(--font-label);
}
.section-index ol,
.section-index ul{display:grid;gap:2px;border-left:1px solid var(--line)}
.section-index a{
  display:block;
  margin-left:-1px;
  padding:8px 12px;
  border-left:2px solid transparent;
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:rgba(33,26,23,.6);
  text-decoration:none;
  transition:color var(--dur) ease,background var(--dur) ease,border-color var(--dur) ease;
}
.section-index a:hover{color:var(--ink);background:rgba(61,224,210,.1)}
.section-index a[aria-current]{
  color:var(--ink);
  border-left-color:var(--orange);
  background:rgba(61,224,210,.14);
}

/* 入场微位移 */
html.js-reveal [data-reveal]{opacity:0;transform:translateY(14px)}
html.js-reveal [data-reveal].is-revealed{
  opacity:1;
  transform:none;
  transition:opacity .4s ease,transform .4s ease;
}

/* ---------- 6. 头部命令栏 ---------- */
.skip-link{
  position:fixed;
  top:-88px;
  left:16px;
  z-index:300;
  padding:10px 18px;
  background:var(--orange);
  color:var(--brown);
  font-family:var(--font-head);
  font-weight:800;
  letter-spacing:.04em;
  text-decoration:none;
  border-radius:var(--radius);
  transition:top var(--dur) ease;
}
.skip-link:focus{top:10px}

.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:var(--ink);
  color:var(--cream);
  border-bottom:1px solid var(--teal-deep);
}
.header-rail{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(8px,1.4vw,20px);
  width:min(1560px,100% - (var(--gutter-head) * 2));
  margin-inline:auto;
  min-height:56px;
  padding-block:8px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  min-height:38px;
  color:var(--cream);
  text-decoration:none;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:30px;
  height:30px;
  flex:0 0 auto;
  border:1px solid rgba(61,224,210,.5);
  border-radius:var(--radius);
  background:linear-gradient(150deg,var(--teal-deep) 0 52%,var(--orange) 52% 100%);
  font-family:var(--font-num);
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--cream);
}
.brand-text{display:flex;flex-direction:column;gap:3px;line-height:1.05}
.brand-name{
  font-family:var(--font-head);
  font-size:17px;
  font-weight:900;
  letter-spacing:.1em;
  color:var(--cream);
}
.brand-suffix{
  font-family:var(--font-label);
  font-size:9.5px;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--teal-gray);
}

.header-status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 11px 4px 9px;
  border:1px solid rgba(154,183,176,.32);
  border-radius:999px;
  font-family:var(--font-label);
  font-size:11px;
  letter-spacing:.08em;
  color:rgba(245,240,230,.74);
  white-space:nowrap;
}
.status-dot{
  width:6px;
  height:6px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(61,224,210,.18);
  animation:status-pulse 2.6s ease-in-out infinite;
}
.status-text{display:inline-block}
@keyframes status-pulse{
  0%,100%{opacity:1}
  50%{opacity:.32}
}

.primary-nav{margin-left:auto}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(1px,.6vw,8px);
}
.nav-item{flex:0 0 auto}
.nav-link{
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:8px 10px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-head);
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.03em;
  color:rgba(245,240,230,.8);
  text-decoration:none;
  white-space:nowrap;
  transition:color var(--dur) ease,background var(--dur) ease,border-color var(--dur) ease;
}
.nav-index{
  font-family:var(--font-num);
  font-size:10px;
  font-weight:700;
  letter-spacing:.04em;
  color:rgba(61,224,210,.62);
}
.nav-link:hover{color:var(--cyan);background:rgba(20,74,66,.9);border-color:rgba(61,224,210,.32)}
.nav-link[aria-current="page"]{
  background:var(--orange);
  border-color:var(--orange);
  color:var(--brown);
}
.nav-link[aria-current="page"] .nav-index{color:rgba(33,26,23,.55)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:8px 12px;
  background:rgba(20,74,66,.72);
  border:1px solid rgba(61,224,210,.42);
  border-radius:var(--radius);
  color:var(--cream);
  font-family:var(--font-label);
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  cursor:pointer;
}
.nav-toggle-lines{display:flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle-lines span{
  display:block;
  height:2px;
  background:var(--cyan);
  transition:transform var(--dur) ease,opacity var(--dur) ease;
}
.nav-toggle-label{display:inline-block}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.header-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(61,224,210,.14);
  pointer-events:none;
}
.header-progress-fill{
  display:block;
  width:100%;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .12s linear;
}

@media (max-width:1240px){
  .nav-index{display:none}
  .nav-link{font-size:13px;padding:8px}
}
@media (max-width:1100px){
  .header-status{display:none}
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    margin:0;
    padding:8px var(--gutter-head) 16px;
    background:var(--ink);
    border-top:1px solid var(--teal-deep);
    border-bottom:1px solid rgba(61,224,210,.28);
    box-shadow:0 30px 48px -22px rgba(0,0,0,.7);
    max-height:calc(100vh - 80px);
    overflow-y:auto;
  }
  .primary-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{border-bottom:1px solid rgba(20,74,66,.9)}
  .nav-item:last-child{border-bottom:0}
  .nav-link{
    width:100%;
    justify-content:flex-start;
    padding:14px 8px;
    border-radius:0;
    font-size:16px;
  }
  .nav-index{display:inline-block;font-size:11px}
  html.nav-open{overflow:hidden}
}
@media (max-width:420px){
  .brand-suffix{display:none}
  .brand-name{font-size:16px}
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  background:var(--ink);
  color:var(--cream);
  border-top:1px solid var(--teal-deep);
}
.footer-ruler{
  height:9px;
  background-color:var(--teal-deep);
  background-image:repeating-linear-gradient(90deg,rgba(61,224,210,.7) 0 1px,transparent 1px 14px);
  opacity:.6;
}
.footer-main{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1.35fr);
  gap:clamp(28px,4vw,64px);
  width:min(var(--max),100% - (var(--gutter) * 2));
  margin-inline:auto;
  padding-block:clamp(36px,5vw,64px) clamp(26px,4vw,40px);
}
.footer-brand{min-width:0}
.footer-brand-link{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
  color:var(--cream);
  text-decoration:none;
}
.footer-blurb{
  max-width:44ch;
  margin-bottom:20px;
  font-size:15px;
  line-height:1.75;
  color:var(--cream-78);
}
.footer-contact{
  display:grid;
  gap:0;
  padding-block:8px;
  margin-bottom:16px;
  border-top:1px solid var(--line-dark);
  border-bottom:1px solid var(--line-dark);
}
.contact-row{
  display:flex;
  align-items:baseline;
  flex-wrap:wrap;
  gap:6px 12px;
  padding:8px 0;
  border-bottom:1px dashed rgba(154,183,176,.16);
}
.contact-row:last-child{border-bottom:0}
.contact-label{
  flex:0 0 42px;
  font-family:var(--font-label);
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--teal-gray);
}
.contact-value{
  font-size:14px;
  letter-spacing:.01em;
  color:var(--cream);
  font-variant-numeric:tabular-nums;
  word-break:break-word;
}
.copy-chip{
  margin-left:auto;
  padding:4px 10px;
  background:transparent;
  border:1px solid rgba(61,224,210,.42);
  border-radius:999px;
  color:var(--cyan);
  font-family:var(--font-label);
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  cursor:pointer;
  transition:background var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease;
}
.copy-chip:hover{background:rgba(61,224,210,.16);border-color:var(--cyan)}
.copy-chip.is-copied{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.footer-note{
  max-width:46ch;
  font-size:13px;
  line-height:1.7;
  color:var(--cream-62);
}
.copy-status{
  min-height:1.2em;
  margin-top:8px;
  font-family:var(--font-label);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--amber);
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(min(100%,148px),1fr));
  gap:clamp(20px,3vw,32px);
}
.footer-col{min-width:0}
.footer-col-title{
  margin:0 0 14px;
  padding-bottom:8px;
  border-bottom:1px solid var(--line-dark);
  font-family:var(--font-label);
  font-size:11px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-list{display:grid;gap:1px}
.footer-link{
  display:inline-block;
  padding:6px 0;
  border-bottom:1px solid transparent;
  font-size:14.5px;
  color:rgba(245,240,230,.82);
  text-decoration:none;
  transition:color var(--dur) ease,border-color var(--dur) ease;
}
.footer-link:hover{color:var(--cyan);border-bottom-color:rgba(61,224,210,.55)}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  width:min(var(--max),100% - (var(--gutter) * 2));
  margin-inline:auto;
  padding:16px 0 clamp(20px,3vw,28px);
  border-top:1px solid var(--line-dark);
  font-family:var(--font-label);
  font-size:11.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:rgba(154,183,176,.86);
}
.footer-icp{margin:0}
.footer-copy{margin:0}
@media (min-width:760px){
  .footer-copy{margin-left:auto}
}

.to-top{
  position:fixed;
  right:clamp(14px,2.5vw,28px);
  bottom:clamp(14px,2.5vw,28px);
  z-index:130;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  background:var(--ink);
  border:1px solid var(--cyan);
  border-radius:var(--radius);
  color:var(--cream);
  font-family:var(--font-label);
  font-size:11px;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity var(--dur) ease,transform var(--dur) ease,visibility var(--dur) ease,color var(--dur) ease,border-color var(--dur) ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{color:var(--orange);border-color:var(--orange)}

@media (max-width:900px){
  .footer-main{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{font-size:11px}
}

/* ---------- 8. 无障碍动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;scroll-padding-top:84px}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js-reveal [data-reveal]{opacity:1;transform:none;transition:none}
  .to-top{transform:none}
}