/* ============================================================
   K1体育赛场 · /assets/site.css
   共享层：reset、变量、中文排版、头部、页脚、通用组件
   ============================================================ */

/* 1. Reset */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100%}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit;margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
table{border-collapse:collapse;border-spacing:0}
[hidden]{display:none}

/* 2. 设计令牌 */
:root{
  --k1-bg:#07130F;
  --k1-panel:#0E1D18;
  --k1-panel-2:#14261F;
  --k1-lime:#C6FF3D;
  --k1-lime-06:rgba(198,255,61,.06);
  --k1-lime-14:rgba(198,255,61,.14);
  --k1-lime-30:rgba(198,255,61,.3);
  --k1-orange:#FF7A2F;
  --k1-amber:#FFC53D;
  --k1-red:#E5484D;
  --k1-cyan:#2FE6C8;
  --k1-text:#F2F6F4;
  --k1-muted:#9FB2A9;
  --k1-line:#1E3A31;
  --k1-line-soft:rgba(30,58,49,.72);
  --k1-line-strong:#2A5548;
  --k1-ink:#06120D;
  --k1-r:4px;
  --k1-shell:1360px;
  --k1-rail-w:240px;
  --k1-ease:cubic-bezier(.32,.72,0,1);
  --k1-display:"PingFang SC","Noto Sans SC","Source Han Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --k1-body:"PingFang SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --k1-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --k1-shadow:0 14px 34px rgba(0,0,0,.38);
}

/* 3. 基础排版 */
body{
  background-color:var(--k1-bg);
  background-image:
    radial-gradient(1100px 560px at 90% -10%,rgba(198,255,61,.10),transparent 62%),
    radial-gradient(880px 520px at 2% 8%,rgba(47,230,200,.07),transparent 58%),
    linear-gradient(180deg,#07130F 0%,#081713 46%,#07130F 100%);
  color:var(--k1-text);
  font-family:var(--k1-body);
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:.01em;
  word-break:break-word;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--k1-display);font-weight:800;font-stretch:condensed;letter-spacing:-.02em;line-height:1.12;color:var(--k1-text)}
h3,h4{font-weight:700}
p{text-wrap:pretty}
a{color:inherit;text-decoration:none}
a:hover{color:var(--k1-lime)}
:focus-visible{outline:2px solid var(--k1-lime);outline-offset:3px;border-radius:2px}
::selection{background:var(--k1-lime-30);color:var(--k1-text)}

/* 4. 通用工具类 */
.k1-shell{width:100%;max-width:var(--k1-shell);margin-inline:auto;padding-inline:clamp(16px,4.2vw,48px)}
.k1-container{padding-block:clamp(40px,6vw,88px)}
.k1-main{display:block}
.k1-mono{font-family:var(--k1-mono);letter-spacing:.06em}
.k1-meta{font-family:var(--k1-mono);font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--k1-muted)}
.k1-index{font-family:var(--k1-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--k1-lime)}
.k1-lead{font-size:16.5px;line-height:1.78;color:var(--k1-muted);max-width:64ch}
.k1-h2{font-size:clamp(28px,4vw,50px)}
.k1-h3{font-size:clamp(19px,2vw,24px)}
.k1-num{font-family:var(--k1-mono);font-size:clamp(26px,3.4vw,40px);letter-spacing:.06em;color:var(--k1-lime);line-height:1}
.k1-divider{height:1px;background:var(--k1-line);border:0}
.k1-band{height:6px;background:linear-gradient(90deg,var(--k1-lime),var(--k1-cyan) 55%,var(--k1-orange));border-radius:var(--k1-r)}
.k1-list{display:grid;gap:8px;color:var(--k1-muted)}
.k1-list li{padding-left:16px;position:relative}
.k1-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:1px;background:var(--k1-lime)}

/* 5. 按钮 */
.k1-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border:1px solid var(--k1-line);border-radius:var(--k1-r);
  background:var(--k1-panel);color:var(--k1-text);
  font-size:14px;font-weight:600;letter-spacing:.03em;cursor:pointer;
  transition:transform .15s ease,background-color .15s ease,border-color .15s ease,color .15s ease;
}
.k1-btn:hover{transform:translateY(-2px);background:var(--k1-panel-2);border-color:var(--k1-line-strong);color:var(--k1-text)}
.k1-btn--primary{background:var(--k1-lime);border-color:var(--k1-lime);color:var(--k1-ink)}
.k1-btn--primary:hover{background:#d6ff6b;border-color:#d6ff6b;color:var(--k1-ink)}
.k1-btn--ghost{background:transparent;border-color:var(--k1-lime-30);color:var(--k1-lime)}
.k1-btn--ghost:hover{background:var(--k1-lime-06);border-color:var(--k1-lime);color:var(--k1-lime)}
.k1-btn--sm{padding:8px 14px;font-size:12.5px}

/* 6. 跳至主内容 */
.k1-skip{
  position:fixed;left:16px;top:-70px;z-index:200;
  padding:10px 18px;border-radius:var(--k1-r);
  background:var(--k1-lime);color:var(--k1-ink);
  font-family:var(--k1-mono);font-size:12px;letter-spacing:.12em;font-weight:600;
  transition:top .16s ease;
}
.k1-skip:focus{top:12px;color:var(--k1-ink)}

/* 7. 头部 */
.k1-header{
  position:sticky;top:0;z-index:90;
  background:linear-gradient(180deg,#07130F 0%,#081713 100%);
  border-bottom:1px solid var(--k1-line);
  box-shadow:0 10px 24px rgba(0,0,0,.3);
}
.k1-progress{
  position:fixed;left:0;top:0;width:100%;height:2px;z-index:95;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--k1-lime),var(--k1-cyan) 62%,var(--k1-orange));
  pointer-events:none;
}
.k1-header__rail{
  background:linear-gradient(90deg,var(--k1-lime-14),rgba(47,230,200,.07) 42%,transparent 82%);
  border-bottom:1px solid var(--k1-line);
}
.k1-rail{
  display:flex;align-items:center;gap:18px;min-height:36px;
  font-family:var(--k1-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
}
.k1-season{display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.k1-season__dot{width:7px;height:7px;border-radius:50%;background:var(--k1-lime);box-shadow:0 0 0 4px var(--k1-lime-14)}
.k1-season__label{color:var(--k1-muted)}
.k1-season__code{color:var(--k1-text);font-weight:600}
.k1-season__sep{color:var(--k1-line-strong)}
.k1-rail__note{margin-left:auto;color:var(--k1-muted);letter-spacing:.1em}
.k1-rail__link{
  color:var(--k1-lime);border-bottom:1px solid var(--k1-lime-30);padding-bottom:2px;white-space:nowrap;
  transition:background-color .15s ease,border-color .15s ease;
}
.k1-rail__link:hover{background:var(--k1-lime-14);border-color:var(--k1-lime);color:var(--k1-lime)}
.k1-header__bar{background:rgba(7,19,15,.86)}
.k1-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px;padding-block:10px}

.k1-brand{display:flex;align-items:center;gap:14px;flex:0 0 auto;padding:6px 0}
.k1-brand:hover .k1-brand__name{color:var(--k1-lime)}
.k1-brand__mark{
  display:inline-flex;align-items:center;gap:3px;height:32px;padding:0 9px;
  border:1px solid var(--k1-line);border-radius:var(--k1-r);
  background:linear-gradient(150deg,var(--k1-lime-14),rgba(255,122,47,.06) 72%);
}
.k1-brand__mark span{width:3px;border-radius:1px;background:var(--k1-lime)}
.k1-brand__mark span:nth-child(1){height:8px;opacity:.5}
.k1-brand__mark span:nth-child(2){height:16px}
.k1-brand__mark span:nth-child(3){height:11px;background:var(--k1-orange)}
.k1-brand__text{display:block}
.k1-brand__name{display:block;font-family:var(--k1-display);font-weight:800;font-size:19px;letter-spacing:.02em;transition:color .15s ease}
.k1-brand__tagline{display:block;margin-top:3px;font-family:var(--k1-mono);font-size:11px;letter-spacing:.12em;color:var(--k1-muted)}

.k1-nav{display:flex;align-items:center;justify-content:flex-end;flex:1 1 auto}
.k1-nav__list{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:2px}
.k1-nav__link{
  display:inline-flex;align-items:baseline;gap:7px;padding:9px 11px;
  border:1px solid transparent;border-radius:var(--k1-r);
  font-size:14.5px;color:var(--k1-muted);
  transition:color .15s ease,background-color .15s ease,border-color .15s ease,transform .15s ease;
}
.k1-nav__link:hover{color:var(--k1-text);background:var(--k1-lime-06);border-color:var(--k1-line);transform:translateY(-2px)}
.k1-nav__index{font-family:var(--k1-mono);font-size:10.5px;letter-spacing:.14em;color:var(--k1-lime);opacity:.85}
.k1-nav__label{font-weight:500}
.k1-nav__link[aria-current="page"]{
  background:var(--k1-lime);border-color:var(--k1-lime);color:var(--k1-ink);font-weight:700;
}
.k1-nav__link[aria-current="page"] .k1-nav__index{color:rgba(6,18,13,.62);opacity:1}
.k1-nav__foot{display:none}
.k1-nav__meta{font-family:var(--k1-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--k1-muted)}

.k1-nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 14px;border:1px solid var(--k1-line);border-radius:var(--k1-r);
  background:var(--k1-panel);color:var(--k1-text);cursor:pointer;
  font-family:var(--k1-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  transition:border-color .15s ease,background-color .15s ease;
}
.k1-nav-toggle:hover{border-color:var(--k1-lime);background:var(--k1-panel-2)}
.k1-nav-toggle__bars{position:relative;display:block;width:16px;height:2px;background:var(--k1-lime);border-radius:1px}
.k1-nav-toggle__bars::before,.k1-nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--k1-lime);border-radius:1px;
  transition:transform .18s ease,opacity .18s ease;
}
.k1-nav-toggle__bars::before{top:-5px}
.k1-nav-toggle__bars::after{top:5px}
.k1-nav-toggle[aria-expanded="true"] .k1-nav-toggle__bars{background:transparent}
.k1-nav-toggle[aria-expanded="true"] .k1-nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.k1-nav-toggle[aria-expanded="true"] .k1-nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

.k1-nav-scrim{display:none}

/* 8. 面包屑 */
.k1-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:18px;
  font-family:var(--k1-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--k1-muted);
}
.k1-breadcrumb__sep{color:var(--k1-line-strong)}
.k1-breadcrumb a:hover{color:var(--k1-lime)}
.k1-breadcrumb [aria-current="page"]{color:var(--k1-text)}

/* 9. 栅格与长卷章节 */
.k1-layout{display:grid;grid-template-columns:var(--k1-rail-w) minmax(0,1fr);gap:clamp(24px,3vw,48px);align-items:start}
.k1-layout__rail{position:sticky;top:132px;display:grid;gap:18px}
.k1-layout__main{min-width:0}

.k1-grid{display:grid;gap:20px}
.k1-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.k1-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.k1-grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.k1-grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.k1-grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}

.k1-chapter{padding-block:clamp(56px,7vw,112px);border-top:1px solid var(--k1-line)}
.k1-chapter:first-of-type{border-top:0}
.k1-chapter__head{display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px 32px;align-items:start;margin-bottom:clamp(24px,3vw,44px)}
.k1-chapter__index{
  font-family:var(--k1-mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--k1-lime);
  padding-top:10px;border-top:1px solid var(--k1-lime-30);
}
.k1-chapter__title{font-size:clamp(30px,4.6vw,58px);letter-spacing:-.02em}
.k1-chapter__lead{margin-top:16px;font-size:16.5px;line-height:1.78;color:var(--k1-muted);max-width:62ch}

/* 10. 数据卡片 */
.k1-card{
  position:relative;min-width:0;
  background:var(--k1-panel);border:1px solid var(--k1-line);border-radius:var(--k1-r);
  padding:20px 22px;
  transition:transform .15s ease,border-color .15s ease,box-shadow .15s ease;
}
.k1-card:hover{transform:translateY(-2px);border-color:var(--k1-line-strong);box-shadow:var(--k1-shadow)}
.k1-card__label{font-family:var(--k1-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--k1-muted)}
.k1-card__value{margin-top:8px;font-family:var(--k1-mono);font-size:clamp(24px,3vw,34px);letter-spacing:.06em;color:var(--k1-lime);line-height:1}
.k1-card__text{margin-top:10px;font-size:14.5px;color:var(--k1-muted)}
.k1-card--accent{background:linear-gradient(150deg,var(--k1-lime-14),var(--k1-panel) 62%);border-color:var(--k1-lime-30)}
.k1-card--alert{background:linear-gradient(150deg,rgba(255,122,47,.14),var(--k1-panel) 62%);border-color:rgba(255,122,47,.42)}
.k1-card--alert .k1-card__value{color:var(--k1-orange)}

/* 11. 标签 */
.k1-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 8px;border:1px solid var(--k1-line);border-radius:3px;
  background:var(--k1-panel-2);color:var(--k1-muted);
  font-family:var(--k1-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
}
.k1-tag--lime{color:var(--k1-lime);border-color:var(--k1-lime-30)}
.k1-tag--cyan{color:var(--k1-cyan);border-color:rgba(47,230,200,.36)}
.k1-tag--amber{color:var(--k1-amber);border-color:rgba(255,197,61,.4)}
.k1-tag--orange{color:var(--k1-orange);border-color:rgba(255,122,47,.42)}
.k1-tag--red{color:var(--k1-red);border-color:rgba(229,72,77,.45)}

/* 12. 表格 */
.k1-table-wrap{
  overflow-x:auto;background:var(--k1-panel);
  border:1px solid var(--k1-line);border-radius:var(--k1-r);
}
.k1-table{width:100%;min-width:560px;font-size:14px}
.k1-table th{
  position:sticky;top:0;z-index:1;
  padding:12px 16px;text-align:left;white-space:nowrap;
  background:var(--k1-panel-2);border-bottom:1px solid var(--k1-line);
  font-family:var(--k1-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--k1-muted);
}
.k1-table td{padding:12px 16px;border-bottom:1px solid var(--k1-line-soft);color:var(--k1-text);vertical-align:top}
.k1-table tbody tr:nth-child(odd){background:var(--k1-panel)}
.k1-table tbody tr:nth-child(even){background:var(--k1-panel-2)}
.k1-table tbody tr:hover{background:var(--k1-lime-06)}
.k1-table [data-sort]{cursor:pointer}
.k1-table mark{background:var(--k1-lime-30);color:var(--k1-lime);padding:0 2px;border-radius:2px}

/* 13. 图片容器基础规则 */
.k1-media{
  position:relative;overflow:hidden;display:block;width:100%;
  aspect-ratio:16/9;border:1px solid var(--k1-line);border-radius:var(--k1-r);
  background:linear-gradient(150deg,#0E1D18,#07130F 78%);
}
.k1-media img{width:100%;height:100%;object-fit:cover}
.k1-media--wide{aspect-ratio:21/9}
.k1-media--tall{aspect-ratio:3/4}
.k1-media--square{aspect-ratio:1/1}
.k1-media__grid{
  position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(30,58,49,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(30,58,49,.7) 1px,transparent 1px);
  background-size:48px 48px;
}
.k1-media__badge{
  position:absolute;left:12px;top:12px;
  padding:3px 8px;border:1px solid var(--k1-lime-30);border-radius:3px;
  background:rgba(7,19,15,.72);color:var(--k1-lime);
  font-family:var(--k1-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
}
.k1-media__caption{margin-top:10px;font-family:var(--k1-mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--k1-muted)}

/* 14. 横向滚动条 */
.k1-scroll-x{
  display:flex;gap:10px;overflow-x:auto;padding-bottom:8px;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
}
.k1-scroll-x>*{flex:0 0 auto;scroll-snap-align:start}
.k1-scroll-x::-webkit-scrollbar{height:6px}
.k1-scroll-x::-webkit-scrollbar-track{background:var(--k1-panel)}
.k1-scroll-x::-webkit-scrollbar-thumb{background:var(--k1-line-strong);border-radius:3px}

/* 15. 显现与滚动锁 */
[data-reveal]{opacity:0;transform:translateY(10px);transition:opacity .5s var(--k1-ease),transform .5s var(--k1-ease)}
[data-reveal].is-visible{opacity:1;transform:none}
.k1-scroll-lock{overflow:hidden}

/* 16. 页脚 */
.k1-footer{
  margin-top:clamp(64px,8vw,120px);
  border-top:1px solid var(--k1-line);
  background:linear-gradient(180deg,#07130F 0%,#0A1A15 52%,#07130F 100%);
}
.k1-footer__band{
  border-bottom:1px solid var(--k1-line);
  background:linear-gradient(90deg,var(--k1-lime-14),rgba(47,230,200,.10) 55%,rgba(255,122,47,.10));
}
.k1-footer__band-inner{display:flex;flex-wrap:wrap;align-items:center;gap:14px 20px;min-height:60px;padding-block:10px}
.k1-footer__band-index{font-family:var(--k1-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--k1-lime)}
.k1-footer__band-text{margin-right:auto;font-size:13.5px;color:var(--k1-muted)}
.k1-footer__band-text .k1-mono{color:var(--k1-text)}
.k1-footer__grid{
  display:grid;grid-template-columns:1.5fr repeat(3,minmax(0,1fr));
  gap:40px 32px;padding-block:clamp(44px,5vw,68px);
}
.k1-footer__brand-name{font-family:var(--k1-display);font-weight:800;font-size:20px;letter-spacing:.02em}
.k1-footer__brand-line{margin-top:8px;font-family:var(--k1-mono);font-size:11.5px;letter-spacing:.1em;color:var(--k1-lime)}
.k1-footer__brand-note{margin-top:14px;font-size:14px;line-height:1.72;color:var(--k1-muted);max-width:34ch}
.k1-footer__title{
  font-family:var(--k1-mono);font-size:11.5px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--k1-text);padding-bottom:12px;border-bottom:1px solid var(--k1-line);
}
.k1-footer__list{margin-top:14px;display:grid;gap:4px}
.k1-footer__link{
  display:inline-block;padding:4px 0;font-size:14.5px;color:var(--k1-muted);
  border-bottom:1px solid transparent;
  transition:color .15s ease,border-color .15s ease;
}
.k1-footer__link:hover{color:var(--k1-lime);border-color:var(--k1-lime-30)}
.k1-footer__contact{
  display:grid;gap:8px;padding-block:22px;
  border-top:1px solid var(--k1-line);
}
.k1-footer__contact-line{font-size:14px;color:var(--k1-text);line-height:1.7}
.k1-footer__note{font-size:13px;color:var(--k1-muted);max-width:88ch}
.k1-footer__legal{border-top:1px solid var(--k1-line);background:rgba(4,10,8,.5)}
.k1-footer__legal-inner{
  display:flex;flex-wrap:wrap;gap:8px 28px;justify-content:space-between;
  padding-block:20px;
  font-family:var(--k1-mono);font-size:11.5px;letter-spacing:.06em;color:var(--k1-muted);
}
.k1-footer__legal-item{margin:0}

/* 17. 平板与手机 */
@media (max-width:1023px){
  body{font-size:16px}
  .k1-nav-toggle{display:inline-flex}
  .k1-nav{
    position:fixed;left:0;right:0;bottom:0;top:auto;z-index:110;
    display:block;max-height:82vh;overflow-y:auto;
    padding:18px clamp(16px,5vw,32px) calc(26px + env(safe-area-inset-bottom));
    background:linear-gradient(180deg,#0E1D18,#07130F 82%);
    border-top:1px solid var(--k1-lime);
    border-radius:var(--k1-r) var(--k1-r) 0 0;
    box-shadow:0 -18px 44px rgba(0,0,0,.56);
    transform:translateY(104%);visibility:hidden;
    transition:transform .22s ease,visibility .22s ease;
  }
  .k1-nav[data-open]{transform:translateY(0);visibility:visible}
  .k1-nav__list{display:grid;grid-template-columns:minmax(0,1fr);gap:0;justify-content:stretch;width:100%}
  .k1-nav__item{width:100%}
  .k1-nav__link{
    width:100%;justify-content:space-between;align-items:center;
    padding:15px 12px;border-bottom:1px solid var(--k1-line);border-radius:0;
    font-size:16px;color:var(--k1-text);
  }
  .k1-nav__link:hover{transform:none}
  .k1-nav__index{order:2;font-size:11.5px}
  .k1-nav__foot{display:grid;gap:10px;margin-top:18px}
  .k1-nav__foot .k1-btn{width:100%}
  .k1-nav-scrim{display:block;position:fixed;inset:0;z-index:100;background:rgba(4,10,8,.62)}
  .k1-nav-scrim[hidden]{display:none}
  .k1-rail{min-height:34px;font-size:10.5px;gap:12px}
  .k1-rail__note{display:none}
  .k1-bar{min-height:64px}
  .k1-brand__tagline{display:none}
  .k1-chapter__head{grid-template-columns:minmax(0,1fr);gap:10px}
  .k1-layout{grid-template-columns:minmax(0,1fr)}
  .k1-layout__rail{position:static;grid-auto-flow:column;grid-auto-columns:max-content;overflow-x:auto;padding-bottom:8px}
  .k1-grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .k1-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px}
}
@media (max-width:900px){
  .k1-grid--3,.k1-grid--7-5,.k1-grid--8-4{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:640px){
  .k1-grid--2,.k1-grid--4{grid-template-columns:minmax(0,1fr)}
  .k1-footer__grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .k1-footer__brand-note{max-width:none}
  .k1-footer__legal-inner{justify-content:flex-start}
  .k1-btn{width:auto}
}

/* 18. 减弱动效 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  [data-reveal]{opacity:1;transform:none}
  .k1-card:hover,.k1-btn:hover,.k1-nav__link:hover{transform:none}
}