/* ==========================================================
   宝威赛场 · 共享样式 /assets/site.css
   深靛底 + 草皮荧光绿 + 补时牌橙红 + 金属铜细节
   ========================================================== */

/* ---------- 01 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-weight:900;line-height:1.14;letter-spacing:-.01em}

/* ---------- 02 设计变量 ---------- */
:root{
  --gobi:#0B1220;
  --night:#141E33;
  --board:#22314F;
  --scale:#4B5C7E;
  --turf:#35E08C;
  --stoppage:#FF6B35;
  --copper:#C98A4B;
  --paper:#E8EEF7;
  --mist:#9AA8C0;
  --sand:#F4F1EA;

  --rail-w:232px;
  --gutter:24px;
  --maxw:1180px;
  --radius:14px;

  --line:rgba(75,92,126,.45);
  --line-soft:rgba(75,92,126,.26);
  --line-faint:rgba(75,92,126,.16);

  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,"Roboto Mono","JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;

  --fs-12:12px;
  --fs-14:14px;
  --fs-16:16px;
  --fs-20:20px;
  --fs-28:28px;
  --fs-44:44px;
  --fs-72:72px;
  --fs-112:112px;
  --fs-160:160px;
}

/* ---------- 03 页面基座 ---------- */
body{
  min-height:100vh;
  background:var(--gobi);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:var(--fs-16);
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:1000px){
  body{padding-left:var(--rail-w)}
}
@media (max-width:640px){
  body{font-size:15px}
}
::selection{background:var(--turf);color:#04170e}
:focus-visible{outline:2px solid var(--copper);outline-offset:3px}

.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:200;
  padding:10px 20px;
  border-radius:999px;
  background:var(--turf);
  color:#04170e;
  font-size:var(--fs-14);
  font-weight:700;
  letter-spacing:.06em;
  transform:translateY(-180%);
  transition:transform .2s ease;
}
.skip-link:focus{
  transform:translateY(0);
  outline:2px solid var(--copper);
  outline-offset:2px;
}

/* ---------- 04 侧边数据轨道（页头） ---------- */
.rail{
  position:fixed;
  top:0;bottom:0;left:0;
  width:var(--rail-w);
  z-index:90;
  display:flex;
  flex-direction:column;
  padding:30px 20px 22px;
  background:linear-gradient(180deg,#0C1526 0%,#141E33 62%,#101A2C 100%);
  border-right:1px solid var(--line-soft);
  overflow-y:auto;
}
.rail::after{
  content:"";
  position:absolute;
  top:0;right:-1px;
  width:1px;height:100%;
  background:repeating-linear-gradient(180deg,var(--scale) 0 7px,transparent 7px 19px);
  opacity:.55;
  pointer-events:none;
}
.rail__top{
  display:flex;
  flex-direction:column;
  gap:12px;
}
.rail__brand{
  display:flex;
  gap:12px;
  align-items:flex-start;
  text-decoration:none;
}
.rail__brand-mark{
  flex:none;
  width:8px;
  height:42px;
  border-radius:2px;
  background:linear-gradient(180deg,var(--turf),rgba(53,224,140,.15));
  box-shadow:0 0 20px rgba(53,224,140,.45);
}
.rail__brand-text{display:block}
.rail__brand-name{
  display:block;
  font-size:22px;
  font-weight:900;
  letter-spacing:.08em;
  color:var(--paper);
  line-height:1.2;
}
.rail__brand-sub{
  display:block;
  margin-top:4px;
  font-size:var(--fs-12);
  letter-spacing:.12em;
  color:var(--mist);
  line-height:1.5;
}
.rail__toggle{display:none}

.rail__nav{margin-top:44px}
.rail__list{display:block}
.rail__item{position:relative;margin-bottom:2px}
.rail__link{
  position:relative;
  display:block;
  padding:10px 12px 10px 18px;
  border-radius:9px;
  font-size:var(--fs-16);
  color:var(--mist);
  letter-spacing:.06em;
  transition:color .2s ease,background-color .2s ease;
}
.rail__link::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:3px;height:20px;
  border-radius:2px;
  background:var(--turf);
  transform:translateY(-50%) scaleY(.35);
  opacity:0;
  transition:opacity .22s ease,transform .22s ease;
}
.rail__link:hover{color:var(--paper);background:rgba(34,49,79,.62)}
.rail__link[aria-current="page"]{
  color:var(--paper);
  font-weight:700;
  background:rgba(53,224,140,.09);
}
.rail__link[aria-current="page"]::before{
  opacity:1;
  transform:translateY(-50%) scaleY(1);
}

.rail__foot{margin-top:auto;padding-top:26px}
.rail__cta{
  display:flex;
  align-items:center;
  justify-content:center;
  padding:13px 16px;
  border-radius:11px;
  background:var(--stoppage);
  color:#200C03;
  font-size:var(--fs-14);
  font-weight:900;
  letter-spacing:.08em;
  box-shadow:0 10px 26px rgba(255,107,53,.26);
  transition:transform .2s ease,box-shadow .2s ease;
}
.rail__cta:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 32px rgba(255,107,53,.42);
}
.rail__note{
  margin-top:12px;
  font-size:var(--fs-12);
  letter-spacing:.14em;
  color:var(--mist);
  text-align:center;
}

/* ---------- 05 页脚 ---------- */
.foot{
  position:relative;
  background:#09101B;
  border-top:1px solid var(--line-soft);
  padding:clamp(52px,7vw,84px) var(--gutter) 30px;
}
.foot::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:150px;height:2px;
  background:linear-gradient(90deg,var(--turf),var(--stoppage));
}
.foot::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:6px;
  background:repeating-linear-gradient(90deg,var(--scale) 0 1px,transparent 1px 26px);
  opacity:.34;
  pointer-events:none;
}
.foot__grid{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.6fr;
  gap:44px 34px;
}
.foot__col{min-width:0}
.foot__brand{
  font-size:var(--fs-20);
  font-weight:900;
  letter-spacing:.1em;
  color:var(--paper);
}
.foot__tagline{
  margin-top:10px;
  font-size:var(--fs-14);
  color:var(--mist);
  letter-spacing:.06em;
}
.foot__stamp{
  display:inline-block;
  margin-top:18px;
  padding:5px 12px;
  border:1px solid rgba(201,138,75,.5);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.16em;
  color:var(--copper);
}
.foot__head{
  font-size:var(--fs-12);
  font-weight:700;
  letter-spacing:.2em;
  color:var(--mist);
  margin-bottom:16px;
}
.foot__list{display:block}
.foot__list li{margin-bottom:9px}
.foot__link{
  font-size:var(--fs-14);
  color:var(--paper);
  letter-spacing:.05em;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.foot__link:hover{color:var(--turf);border-bottom-color:var(--turf)}
.foot__list--plain .foot__item{
  font-size:var(--fs-14);
  color:var(--mist);
  line-height:1.7;
  word-break:break-word;
}
.foot__note{
  margin-top:14px;
  font-size:var(--fs-12);
  line-height:1.75;
  color:rgba(154,168,192,.78);
}
.foot__base{
  max-width:var(--maxw);
  margin:46px auto 0;
  padding-top:22px;
  border-top:1px solid var(--line-faint);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px 26px;
}
.foot__copy{
  font-size:var(--fs-12);
  letter-spacing:.1em;
  color:var(--mist);
}
.foot__legal{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
}
.foot__legal .foot__link{font-size:var(--fs-12);letter-spacing:.12em;color:var(--mist)}
.foot__legal .foot__link:hover{color:var(--copper)}

/* ---------- 06 布局辅助 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gutter);
}
.section{
  position:relative;
  padding:clamp(56px,8vw,120px) 0;
}
.section--night{background:var(--night)}
.section--board{background:var(--board)}
.section--sand{background:var(--sand);color:#0B1220}
.section--sand .body-text,
.section--sand .annot,
.section--sand .metric__label{color:#4A5670}
.section--sand .t-lg,
.section--sand .t-xl,
.section--sand .t-huge,
.section--sand .t-md{color:#0B1220}
.section--sand .rule{background:linear-gradient(90deg,rgba(11,18,32,.4),transparent)}
.section__head{
  display:flex;
  flex-direction:column;
  gap:14px;
  margin-bottom:clamp(32px,5vw,56px);
}
.section__index{
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.28em;
  color:var(--copper);
}
.grid{display:grid;gap:28px}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 07 排版体系 ---------- */
.t-huge{
  font-size:clamp(64px,12vw,var(--fs-160));
  line-height:.86;
  font-weight:900;
  letter-spacing:-.03em;
}
.t-xl{
  font-size:clamp(34px,5.6vw,var(--fs-72));
  line-height:1.02;
  font-weight:900;
  letter-spacing:-.02em;
}
.t-lg{
  font-size:clamp(24px,3.2vw,var(--fs-44));
  line-height:1.14;
  font-weight:900;
}
.t-md{
  font-size:clamp(19px,2.1vw,var(--fs-28));
  line-height:1.3;
  font-weight:700;
}
.lead{
  font-size:var(--fs-20);
  line-height:1.78;
  color:var(--paper);
  max-width:34em;
}
.body-text{
  font-size:var(--fs-16);
  line-height:1.85;
  color:var(--mist);
  max-width:38em;
}
@media (max-width:640px){.body-text{font-size:15px}}
.annot{
  font-size:var(--fs-12);
  letter-spacing:.12em;
  line-height:1.65;
  color:var(--mist);
}
.annot--vertical{
  writing-mode:vertical-rl;
  letter-spacing:.34em;
  text-orientation:mixed;
}

/* ---------- 08 数据与交互组件 ---------- */
.num{
  display:inline-block;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
  font-weight:700;
  line-height:.9;
}
.num--hero{
  font-size:clamp(66px,12vw,var(--fs-160));
  color:var(--turf);
  letter-spacing:.02em;
}
.num--warm{color:var(--stoppage)}
.num__unit{
  font-size:.26em;
  letter-spacing:.16em;
  color:var(--mist);
  margin-left:.35em;
  vertical-align:.35em;
}
.metric{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-width:0;
}
.metric__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(38px,5.4vw,var(--fs-72));
  font-weight:700;
  line-height:.94;
  letter-spacing:.04em;
  color:var(--turf);
}
.metric__label{
  font-size:var(--fs-12);
  letter-spacing:.14em;
  color:var(--mist);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 28px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:var(--fs-14);
  font-weight:700;
  letter-spacing:.08em;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{
  background:var(--turf);
  color:#04170E;
  box-shadow:0 10px 26px rgba(53,224,140,.2);
}
.btn--primary:hover{box-shadow:0 14px 32px rgba(53,224,140,.34)}
.btn--warm{
  background:var(--stoppage);
  color:#200C03;
  box-shadow:0 10px 26px rgba(255,107,53,.22);
}
.btn--warm:hover{box-shadow:0 14px 32px rgba(255,107,53,.38)}
.btn--ghost{
  border-color:var(--line);
  color:var(--paper);
  background:transparent;
}
.btn--ghost:hover{border-color:var(--turf);color:var(--turf)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:var(--fs-12);
  letter-spacing:.1em;
  color:var(--mist);
}
.tag--turf{color:var(--turf);border-color:rgba(53,224,140,.5)}
.tag--warm{color:var(--stoppage);border-color:rgba(255,107,53,.5)}

.rule{
  height:1px;
  border:0;
  background:linear-gradient(90deg,var(--scale),transparent);
}
.rule--full{background:var(--scale);opacity:.4}

.sticker{
  position:relative;
  padding:clamp(20px,3vw,30px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--board);
}
.sticker--turf{border-color:rgba(53,224,140,.42)}
.sticker--warm{border-color:rgba(255,107,53,.42)}
.sticker--copper{border-color:rgba(201,138,75,.45)}

.timeline{
  position:relative;
  padding-left:30px;
}
.timeline::before{
  content:"";
  position:absolute;
  left:6px;top:8px;bottom:8px;
  width:1px;
  background:repeating-linear-gradient(180deg,var(--scale) 0 6px,transparent 6px 15px);
}
.timeline__node{
  position:relative;
  padding-bottom:30px;
}
.timeline__node::before{
  content:"";
  position:absolute;
  left:-30px;top:6px;
  width:13px;height:13px;
  border-radius:4px;
  background:var(--board);
  border:1px solid var(--scale);
}
.timeline__node[data-state="done"]::before{
  background:var(--turf);
  border-color:var(--turf);
  box-shadow:0 0 14px rgba(53,224,140,.5);
}
.timeline__node[data-state="live"]::before{
  background:var(--stoppage);
  border-color:var(--stoppage);
  box-shadow:0 0 14px rgba(255,107,53,.5);
}

.media-frame{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(155deg,#17253F 0%,#0B1220 72%);
}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--wide{aspect-ratio:21/9}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:contrast(1.08) saturate(.92) brightness(.86);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(var(--line-faint) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-faint) 1px,transparent 1px);
  background-size:44px 44px;
  pointer-events:none;
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  font-size:var(--fs-12);
  letter-spacing:.12em;
  color:var(--mist);
}
.breadcrumb li+li::before{
  content:"/";
  margin-right:10px;
  color:var(--scale);
}
.breadcrumb a{color:var(--mist);transition:color .2s ease}
.breadcrumb a:hover{color:var(--turf)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

/* ---------- 09 动效 ---------- */
[data-reveal]{
  opacity:0;
  transform:translate3d(0,12px,0);
  transition:opacity .6s ease,transform .6s ease;
  will-change:opacity,transform;
}
[data-reveal].is-in{
  opacity:1;
  transform:none;
}
html:not(.js) [data-reveal]{
  opacity:1;
  transform:none;
}
@media (scripting:none){
  [data-reveal]{opacity:1;transform:none}
}
.scroll-progress{
  position:fixed;
  top:0;left:0;
  width:100%;height:2px;
  z-index:120;
  background:linear-gradient(90deg,var(--turf),var(--copper) 62%,var(--stoppage));
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  [data-reveal]{opacity:1 !important;transform:none !important;transition:none !important}
  .btn:hover,.rail__cta:hover{transform:none}
  .scroll-progress{background:var(--turf)}
}

/* ---------- 10 响应式 ---------- */
@media (max-width:999px){
  .rail{
    position:sticky;
    top:0;
    width:100%;
    height:auto;
    padding:0;
    border-right:0;
    border-bottom:1px solid var(--line-soft);
    background:rgba(11,18,32,.97);
    backdrop-filter:blur(10px);
    overflow:visible;
  }
  .rail::after{display:none}
  .rail__top{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    padding:12px 18px;
  }
  .rail__brand{gap:10px;align-items:center}
  .rail__brand-mark{height:28px;width:7px}
  .rail__brand-name{font-size:17px;letter-spacing:.06em}
  .rail__brand-sub{font-size:11px;letter-spacing:.08em;margin-top:1px}
  .rail__toggle{
    display:inline-flex;
    align-items:center;
    gap:9px;
    flex:none;
    padding:8px 15px;
    border:1px solid var(--line);
    border-radius:999px;
    font-size:var(--fs-12);
    letter-spacing:.16em;
    color:var(--paper);
  }
  .rail__toggle:hover{border-color:var(--turf);color:var(--turf)}
  .rail__toggle-icon{
    position:relative;
    display:block;
    width:14px;height:10px;
  }
  .rail__toggle-icon::before,
  .rail__toggle-icon::after{
    content:"";
    position:absolute;
    left:0;
    width:100%;
    height:1.5px;
    background:var(--turf);
    transition:transform .25s ease,opacity .25s ease;
  }
  .rail__toggle-icon::before{top:0}
  .rail__toggle-icon::after{bottom:0}
  .rail[data-open="true"] .rail__toggle-icon::before{transform:translateY(4.25px) rotate(45deg)}
  .rail[data-open="true"] .rail__toggle-icon::after{transform:translateY(-4.25px) rotate(-45deg)}

  .rail__nav,
  .rail__foot{
    max-height:0;
    opacity:0;
    visibility:hidden;
    overflow:hidden;
    transform:translateY(-6px);
    margin:0;
    padding:0;
    transition:max-height .32s cubic-bezier(.4,0,.2,1),opacity .24s ease,transform .24s ease,visibility 0s linear .32s;
  }
  .rail[data-open="true"] .rail__nav{
    max-height:56vh;
    overflow-y:auto;
    opacity:1;
    visibility:visible;
    transform:none;
    transition-delay:0s;
    padding:4px 18px 8px;
  }
  .rail[data-open="true"] .rail__foot{
    max-height:30vh;
    opacity:1;
    visibility:visible;
    transform:none;
    transition-delay:0s;
    padding:6px 18px 20px;
  }
  .rail__list{display:grid;grid-template-columns:1fr}
  .rail__item{margin-bottom:0}
  .rail__link{
    padding:13px 14px;
    border-radius:0;
    border-bottom:1px solid var(--line-faint);
    font-size:var(--fs-16);
  }
  .rail__link::before{
    left:0;
    width:3px;height:22px;
  }
  .rail__link[aria-current="page"]{background:transparent}
  .rail__cta{padding:14px}
  .rail__note{margin-top:10px}

  .foot__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 26px}
}

@media (max-width:760px){
  .grid--2,
  .grid--3{grid-template-columns:1fr}
}

@media (max-width:560px){
  :root{--gutter:18px}
  .foot__grid{grid-template-columns:1fr;gap:34px}
  .foot__base{flex-direction:column;align-items:flex-start;gap:14px}
  .foot__brand{font-size:18px}
  .annot--vertical{writing-mode:horizontal-tb;letter-spacing:.16em}
  .lead{font-size:17px}
}