/* /assets/site.css — 开云竞猜赛场 共享外壳与通用组件 */

:root{
  --tone-base:#0B1622;
  --tone-panel:#12253A;
  --tone-panel-up:#152B44;
  --tone-grid:#1E3A52;
  --tone-deep:#063D31;
  --tone-cyan:#00E5A8;
  --tone-cyan-soft:rgba(0,229,168,.12);
  --tone-orange:#FF7A1A;
  --tone-ink:#EAF2F5;
  --tone-ink-soft:#C8D8E0;
  --tone-muted:#9BB0BD;
  --tone-light:#F4F7F8;
  --tone-stroke:#4A6675;

  --font-sans:"PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SF Mono","JetBrains Mono","Roboto Mono",Menlo,Consolas,monospace;

  --r-sm:12px;
  --r-md:18px;
  --r-lg:28px;
  --r-pill:999px;

  --shell:1200px;
  --gap:28px;
  --head-h:132px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}

html{
  background-color:var(--tone-base);
  background-image:
    linear-gradient(to right, rgba(30,58,82,.40) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,58,82,.40) 1px, transparent 1px);
  background-size:78px 78px;
  scroll-behavior:smooth;
  scroll-padding-top:150px;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  padding:0;
  background:transparent;
  color:var(--tone-ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,video{max-width:100%;display:block;}
a{color:inherit;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}

h1,h2,h3,h4,p,figure,blockquote{margin:0;}

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

::selection{background:rgba(0,229,168,.28);color:var(--tone-ink);}

#main-content{display:block;scroll-margin-top:120px;}

/* ---------- 布局外壳 ---------- */
.kx-container{
  width:min(100% - 40px, var(--shell));
  margin-inline:auto;
}

.kx-stack{display:flex;flex-direction:column;gap:18px;}
.kx-stack--tight{gap:10px;}
.kx-stack--loose{gap:34px;}

.kx-section{
  position:relative;
  padding:68px 0;
}
.kx-section--alt{background:var(--tone-panel);}
.kx-section--light{background:var(--tone-light);color:#0B1B26;}
.kx-section--light .kx-h1,
.kx-section--light .kx-h2,
.kx-section--light .kx-h3{color:#0B1B26;}
.kx-section--light .kx-lede,
.kx-section--light .kx-body{color:#3E5563;}
.kx-section--light .kx-note{color:#5B7383;}

.kx-section__head{max-width:48ch;margin-bottom:34px;}

.kx-rail{
  position:sticky;
  top:calc(var(--head-h) + 24px);
  align-self:start;
}

/* ---------- 排版 ---------- */
.kx-h1{
  font-size:clamp(34px,5.4vw,56px);
  line-height:1.06;
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--tone-ink);
  margin-bottom:18px;
}
.kx-h2{
  font-size:clamp(24px,3.4vw,34px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.015em;
  color:var(--tone-ink);
  margin-bottom:14px;
}
.kx-h3{
  font-size:clamp(19px,2.2vw,24px);
  line-height:1.3;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--tone-ink);
  margin-bottom:10px;
}
.kx-lede{
  font-size:clamp(16px,1.5vw,18px);
  line-height:1.78;
  color:var(--tone-muted);
  max-width:40ch;
}
.kx-body{
  font-size:17px;
  line-height:1.78;
  color:var(--tone-ink-soft);
  max-width:40ch;
}
.kx-note{
  font-size:12px;
  line-height:1.65;
  letter-spacing:.08em;
  color:var(--tone-muted);
}
.kx-note--vertical{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  letter-spacing:.3em;
  font-size:12px;
  color:var(--tone-stroke);
  user-select:none;
}
.kx-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.24em;
  color:var(--tone-cyan);
  margin-bottom:16px;
}
.kx-eyebrow::before{
  content:"";
  width:28px;
  height:1px;
  background:var(--tone-cyan);
}

.kx-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:600;
  letter-spacing:.01em;
}

/* ---------- 徽标 ---------- */
.kx-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:var(--r-pill);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.6;
  border:1px solid var(--tone-stroke);
  color:var(--tone-muted);
  background:rgba(18,37,58,.65);
  white-space:nowrap;
}
.kx-badge--live{
  color:var(--tone-cyan);
  border-color:rgba(0,229,168,.45);
  background:rgba(0,229,168,.1);
}
.kx-badge--live::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--tone-cyan);
}
.kx-badge--time{
  color:var(--tone-orange);
  border-color:rgba(255,122,26,.5);
  background:rgba(255,122,26,.1);
}

/* ---------- 按钮 ---------- */
.kx-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  letter-spacing:.03em;
  line-height:1.3;
  text-decoration:none;
  cursor:pointer;
  transition:transform .2s ease, background-color .2s ease, color .2s ease, border-color .2s ease;
}
.kx-btn:hover{transform:translateY(-2px);}
.kx-btn--primary{background:var(--tone-cyan);color:#04211A;}
.kx-btn--primary:hover{background:#3DF3C0;}
.kx-btn--ghost{background:transparent;border-color:var(--tone-stroke);color:var(--tone-ink);}
.kx-btn--ghost:hover{border-color:var(--tone-cyan);color:var(--tone-cyan);}
.kx-btn--signal{background:var(--tone-orange);color:#23100A;}
.kx-btn--signal:hover{background:#FF9445;}

/* ---------- 面包屑 ---------- */
.kx-breadcrumb{
  padding:26px 0 0;
  font-size:13px;
}
.kx-breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.kx-breadcrumb__item{
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--tone-muted);
}
.kx-breadcrumb__item + .kx-breadcrumb__item::before{
  content:"/";
  color:var(--tone-stroke);
}
.kx-breadcrumb__link{
  color:var(--tone-muted);
  text-decoration:none;
  transition:color .2s ease;
}
.kx-breadcrumb__link:hover{color:var(--tone-cyan);}
.kx-breadcrumb__current{color:var(--tone-ink);}

/* ---------- 网格 ---------- */
.kx-grid--12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gap);
}
.kx-c-3{grid-column:span 3;}
.kx-c-4{grid-column:span 4;}
.kx-c-5{grid-column:span 5;}
.kx-c-7{grid-column:span 7;}
.kx-c-8{grid-column:span 8;}
.kx-c-12{grid-column:span 12;}

/* ---------- 横向赛道分区 ---------- */
.kx-track{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:minmax(232px,1fr);
  gap:18px;
  overflow-x:auto;
  padding-bottom:10px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.kx-track > *{scroll-snap-align:start;}

/* ---------- 卡片 ---------- */
.kx-card{
  background:var(--tone-panel);
  border:1px solid var(--tone-grid);
  border-radius:var(--r-lg);
  padding:24px;
  transition:transform .22s ease, background-color .22s ease, border-color .22s ease;
}
.kx-card:hover{
  transform:translateY(-2px);
  background:var(--tone-panel-up);
  border-color:var(--tone-stroke);
}
.kx-card__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-bottom:16px;
}
.kx-card__body{
  font-size:15px;
  line-height:1.75;
  color:var(--tone-muted);
}

/* ---------- 清单 ---------- */
.kx-clist{
  border-top:1px solid var(--tone-grid);
}
.kx-clist__item{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:14px 2px;
  border-bottom:1px solid var(--tone-grid);
}
.kx-clist__label{
  font-size:15px;
  color:var(--tone-ink);
}
.kx-clist__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:15px;
  font-weight:600;
  color:var(--tone-cyan);
}

/* ---------- 图片容器 ---------- */
.kx-media{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid var(--tone-grid);
  background-image:linear-gradient(140deg,#12253A 0%,#0B1622 58%,#063D31 100%);
  background-size:cover;
  background-position:center;
}
.kx-media--16x9{aspect-ratio:16/9;}
.kx-media--4x3{aspect-ratio:4/3;}
.kx-media--21x9{aspect-ratio:21/9;}
.kx-media__img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.kx-media__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:32px 18px 14px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--tone-muted);
  background:linear-gradient(to top, rgba(7,15,24,.88), rgba(7,15,24,0));
}

/* ---------- 框景 ---------- */
.kx-frame{
  position:relative;
  border:1px solid var(--tone-grid);
  border-radius:var(--r-lg);
  padding:clamp(30px,4.6vw,60px);
  overflow:hidden;
  background-image:
    radial-gradient(120% 140% at 10% 0%, rgba(0,229,168,.10) 0%, rgba(0,229,168,0) 48%),
    linear-gradient(152deg, rgba(18,37,58,.96) 0%, rgba(11,22,34,.98) 62%, rgba(6,61,49,.55) 100%);
}
.kx-frame__corner{
  position:absolute;
  width:18px;
  height:18px;
  border:2px solid var(--tone-cyan);
  opacity:.85;
  pointer-events:none;
}
.kx-frame__corner--tl{top:10px;left:10px;border-right:0;border-bottom:0;border-top-left-radius:8px;}
.kx-frame__corner--tr{top:10px;right:10px;border-left:0;border-bottom:0;border-top-right-radius:8px;}
.kx-frame__corner--bl{bottom:10px;left:10px;border-right:0;border-top:0;border-bottom-left-radius:8px;}
.kx-frame__corner--br{bottom:10px;right:10px;border-left:0;border-top:0;border-bottom-right-radius:8px;}
.kx-frame__ticks{
  position:absolute;
  top:0;
  left:12%;
  right:12%;
  height:9px;
  opacity:.55;
  pointer-events:none;
  background-image:repeating-linear-gradient(to right, var(--tone-stroke) 0 1px, transparent 1px 20px);
}

/* ---------- 分段控制器 ---------- */
.kx-seg{
  display:inline-flex;
  flex-wrap:wrap;
  gap:4px;
  padding:5px;
  border-radius:var(--r-pill);
  background:var(--tone-panel);
  border:1px solid var(--tone-grid);
}
.kx-seg__btn{
  appearance:none;
  border:0;
  background:transparent;
  color:var(--tone-muted);
  padding:9px 20px;
  border-radius:var(--r-pill);
  font:inherit;
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  cursor:pointer;
  transition:background-color .22s ease, color .22s ease;
}
.kx-seg__btn:hover{color:var(--tone-ink);}
.kx-seg__btn[aria-selected="true"]{
  background:var(--tone-cyan-soft);
  color:var(--tone-cyan);
}
.kx-seg-panel{padding-top:24px;}

/* ---------- 标签页 ---------- */
.kx-tabs{
  display:flex;
  flex-wrap:wrap;
  gap:4px;
  border-bottom:1px solid var(--tone-grid);
}
.kx-tabs__tab{
  appearance:none;
  background:transparent;
  border:0;
  border-bottom:2px solid transparent;
  color:var(--tone-muted);
  font:inherit;
  font-size:15px;
  font-weight:600;
  padding:12px 18px;
  cursor:pointer;
  transition:color .22s ease, border-color .22s ease;
}
.kx-tabs__tab:hover{color:var(--tone-ink);}
.kx-tabs__tab[aria-selected="true"]{
  color:var(--tone-ink);
  border-bottom-color:var(--tone-cyan);
}
.kx-tabs__panel{padding-top:22px;}

/* ---------- 折叠面板 ---------- */
.kx-accordion{
  border-top:1px solid var(--tone-grid);
}
.kx-accordion__item{
  border-bottom:1px solid var(--tone-grid);
}
.kx-accordion__trigger{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:18px 4px;
  background:transparent;
  border:0;
  color:var(--tone-ink);
  font:inherit;
  font-size:16px;
  font-weight:600;
  text-align:left;
  cursor:pointer;
  transition:color .2s ease;
}
.kx-accordion__trigger::after{
  content:"+";
  font-family:var(--font-mono);
  font-size:18px;
  color:var(--tone-cyan);
  line-height:1;
  transition:transform .24s ease;
}
.kx-accordion__trigger[aria-expanded="true"]{color:var(--tone-cyan);}
.kx-accordion__trigger[aria-expanded="true"]::after{transform:rotate(45deg);}
.kx-accordion__panel{
  padding:0 4px 22px;
  font-size:15px;
  line-height:1.8;
  color:var(--tone-muted);
  max-width:52ch;
}

/* ---------- 显现 ---------- */
.kx-reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .42s ease, transform .42s ease;
}
.kx-reveal.is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 跳过链接 ---------- */
.kx-skip{
  position:fixed;
  top:-70px;
  left:50%;
  transform:translateX(-50%);
  z-index:200;
  padding:11px 22px;
  border-radius:0 0 14px 14px;
  background:var(--tone-cyan);
  color:#04211A;
  font-size:14px;
  font-weight:800;
  text-decoration:none;
  transition:top .22s ease;
}
.kx-skip:focus{top:0;}

/* ================= 页头 ================= */
.kx-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(11,22,34,.94);
  border-bottom:1px solid var(--tone-grid);
  backdrop-filter:blur(10px);
}

.kx-utility{
  max-height:52px;
  overflow:hidden;
  border-bottom:1px solid rgba(30,58,82,.7);
  transition:max-height .3s ease, opacity .24s ease;
}
.kx-utility__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:38px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--tone-muted);
}
.kx-utility__group{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}
.kx-utility__group--end{gap:12px;}
.kx-utility__label{
  color:var(--tone-stroke);
  letter-spacing:.2em;
}
.kx-utility__chip{
  padding:3px 12px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  color:var(--tone-muted);
  white-space:nowrap;
}
.kx-utility__chip--active{
  color:var(--tone-cyan);
  border-color:rgba(0,229,168,.42);
  background:rgba(0,229,168,.1);
}
.kx-utility__region{
  color:var(--tone-ink-soft);
  letter-spacing:.12em;
}
.kx-utility__sep{
  display:inline-block;
  width:1px;
  height:12px;
  background:var(--tone-stroke);
}
.kx-utility__hint{color:var(--tone-stroke);}

.kx-header__bar-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:14px;
  padding:16px 0 14px;
}
.kx-header__side{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:0;
}
.kx-header__side--start{justify-content:flex-start;}
.kx-header__side--end{justify-content:flex-end;}

.kx-masthead__line{
  font-size:11px;
  letter-spacing:.32em;
  color:var(--tone-stroke);
  transition:opacity .22s ease;
  white-space:nowrap;
}
.kx-masthead__mark{
  font-size:clamp(22px,3.2vw,36px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.1;
  color:var(--tone-ink);
  text-decoration:none;
  text-align:center;
  white-space:nowrap;
  transition:font-size .26s ease, color .22s ease;
}
.kx-masthead__mark:hover{color:var(--tone-cyan);}
.kx-masthead__meta{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--tone-muted);
  white-space:nowrap;
  transition:opacity .22s ease;
}
.kx-masthead__meta .kx-num{color:var(--tone-cyan);}

.kx-nav__toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 16px;
  border-radius:var(--r-pill);
  border:1px solid var(--tone-stroke);
  background:transparent;
  color:var(--tone-ink);
  font-size:13px;
  font-weight:600;
  letter-spacing:.06em;
  cursor:pointer;
  transition:border-color .2s ease, color .2s ease;
}
.kx-nav__toggle:hover{border-color:var(--tone-cyan);color:var(--tone-cyan);}
.kx-nav__toggle-bars{
  position:relative;
  display:inline-block;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
}
.kx-nav__toggle-bars::before,
.kx-nav__toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .24s ease, top .24s ease;
}
.kx-nav__toggle-bars::before{top:-6px;}
.kx-nav__toggle-bars::after{top:6px;}
.kx-nav__toggle[aria-expanded="true"] .kx-nav__toggle-bars{background:transparent;}
.kx-nav__toggle[aria-expanded="true"] .kx-nav__toggle-bars::before{top:0;transform:rotate(45deg);}
.kx-nav__toggle[aria-expanded="true"] .kx-nav__toggle-bars::after{top:0;transform:rotate(-45deg);}

.kx-nav{
  border-top:1px solid rgba(30,58,82,.6);
}
.kx-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:stretch;
  justify-content:center;
  gap:4px;
}
.kx-nav__item{display:flex;}
.kx-nav__link{
  position:relative;
  display:inline-block;
  padding:12px 18px 14px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--tone-muted);
  text-decoration:none;
  transition:color .2s ease, background-color .2s ease;
}
.kx-nav__link::after{
  content:"";
  position:absolute;
  left:18px;
  right:18px;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:var(--tone-cyan);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .24s ease;
}
.kx-nav__link:hover{color:var(--tone-ink);}
.kx-nav__link:hover::after{transform:scaleX(1);}
.kx-nav__link[aria-current="page"]{
  color:var(--tone-ink);
  background:var(--tone-cyan-soft);
}
.kx-nav__link[aria-current="page"]::after{transform:scaleX(1);}

.kx-header__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg, var(--tone-cyan), var(--tone-orange));
  pointer-events:none;
}

.kx-header[data-condensed] .kx-utility{
  max-height:0;
  opacity:0;
  border-bottom-color:transparent;
}
.kx-header[data-condensed] .kx-header__bar-inner{padding:10px 0;}
.kx-header[data-condensed] .kx-masthead__mark{font-size:clamp(18px,2.2vw,22px);}
.kx-header[data-condensed] .kx-masthead__line,
.kx-header[data-condensed] .kx-masthead__meta{opacity:0;}

/* ================= 页脚 ================= */
.kx-footer{
  position:relative;
  background:#070F18;
  border-top:1px solid var(--tone-grid);
  padding:62px 0 30px;
}
.kx-footer__top{
  display:grid;
  grid-template-columns:1.5fr repeat(3, minmax(110px,1fr));
  gap:38px 24px;
}
.kx-footer__brand{max-width:34ch;}
.kx-footer__brand-name{
  font-size:23px;
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--tone-ink);
  margin-bottom:8px;
}
.kx-footer__brand-line{
  font-size:11px;
  letter-spacing:.34em;
  color:var(--tone-stroke);
  margin-bottom:16px;
}
.kx-footer__brand-note{
  font-size:14px;
  line-height:1.8;
  color:var(--tone-muted);
  margin-bottom:18px;
}
.kx-footer__col-title{
  font-size:12px;
  font-weight:700;
  letter-spacing:.24em;
  color:var(--tone-cyan);
  margin-bottom:14px;
}
.kx-footer__list{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.kx-footer__link{
  font-size:14px;
  color:var(--tone-muted);
  text-decoration:none;
  transition:color .2s ease, padding-left .2s ease;
}
.kx-footer__link:hover{color:var(--tone-ink);padding-left:4px;}

.kx-footer__bottom{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);
  gap:22px 40px;
  align-items:end;
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid var(--tone-grid);
}
.kx-footer__bottom-main{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.kx-footer__bottom-side{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:12px;
}
.kx-footer__contact{
  font-size:14px;
  color:var(--tone-ink-soft);
  letter-spacing:.02em;
}
.kx-footer__footnote{
  font-size:12px;
  line-height:1.7;
  color:var(--tone-stroke);
  max-width:64ch;
}
.kx-footer__legal{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  justify-content:flex-end;
}
.kx-footer__legal-link{
  font-size:13px;
  color:var(--tone-muted);
  text-decoration:none;
  transition:color .2s ease;
}
.kx-footer__legal-link:hover{color:var(--tone-cyan);}
.kx-footer__meta{
  display:flex;
  flex-wrap:wrap;
  gap:6px 18px;
  justify-content:flex-end;
  font-size:12px;
  color:var(--tone-stroke);
  letter-spacing:.04em;
}

/* ================= 响应式 ================= */
@media (max-width:1100px){
  :root{--gap:22px;}
  .kx-masthead__line,
  .kx-masthead__meta{display:none;}
}

@media (max-width:980px){
  .kx-grid--12{grid-template-columns:1fr;gap:20px;}
  .kx-c-3,.kx-c-4,.kx-c-5,.kx-c-7,.kx-c-8,.kx-c-12{grid-column:1 / -1;}
  .kx-rail{position:static;}
  .kx-section{padding:52px 0;}
  .kx-footer__top{grid-template-columns:repeat(2,minmax(0,1fr));}
  .kx-footer__brand{grid-column:1 / -1;max-width:none;}
  .kx-footer__bottom{grid-template-columns:1fr;}
  .kx-footer__bottom-side{align-items:flex-start;}
  .kx-footer__legal,
  .kx-footer__meta{justify-content:flex-start;}
}

@media (max-width:900px){
  :root{--head-h:96px;}

  .kx-nav{
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease;
  }
  .kx-nav[data-open]{max-height:520px;}
  .kx-nav__list{flex-direction:column;gap:0;padding:8px 0 18px;}
  .kx-nav__item{display:block;}
  .kx-nav__link{display:block;padding:14px 6px;border-radius:var(--r-sm);}
  .kx-nav__link::after{left:6px;right:auto;bottom:8px;width:22px;}
  .kx-nav__toggle{display:inline-flex;}
  .kx-track{
    grid-auto-columns:minmax(250px,82%);
    margin-inline:-20px;
    padding-inline:20px;
  }
}

@media (max-width:640px){
  body{font-size:16px;}
  .kx-container{width:min(100% - 28px, var(--shell));}
  .kx-section{padding:44px 0;}
  .kx-header__bar-inner{padding:12px 0 11px;}
  .kx-utility__label{display:none;}
  .kx-utility__hint{display:none;}
  .kx-footer{padding:46px 0 26px;}
  .kx-footer__top{grid-template-columns:1fr;gap:30px;}
  .kx-tabs__tab{padding:11px 14px;font-size:14px;}
  .kx-seg__btn{padding:8px 15px;font-size:13px;}
}

/* ================= 动效降级 ================= */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .kx-reveal{opacity:1 !important;transform:none !important;}
  .kx-btn:hover,
  .kx-card:hover{transform:none;}
}