/* ==========================================================
   极速彩主站 · 共享样式  /assets/site.css
   构图：深空黑骨架 + 光谱三色 + 粗野主义档案卡
   ========================================================== */

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

/* ---------- 2. Tokens ---------- */
:root{
  --ink:#0B0B12;
  --ink-2:#131A2B;
  --paper:#F4EFE6;
  --paper-2:#FFFDF8;
  --brown:#1E1A17;
  --magenta:#FF2E93;
  --blue:#2C7BFF;
  --green:#38F8B0;
  --amber:#FF7A1A;
  --violet:#6C6A8A;

  --on-dark:#F4EFE6;
  --on-light:#1E1A17;
  --on-dark-mute:rgba(244,239,230,.66);
  --on-light-mute:rgba(30,26,23,.66);
  --hair-dark:rgba(244,239,230,.16);
  --hair-light:rgba(30,26,23,.18);

  --spectrum:linear-gradient(90deg,var(--magenta) 0%,var(--blue) 48%,var(--green) 100%);
  --scan:repeating-linear-gradient(90deg,rgba(244,239,230,.03) 0 1px,transparent 1px 6px);

  --bd:2px;
  --shadow-1:4px 4px 0 var(--brown);
  --shadow-2:6px 6px 0 var(--brown);

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

  --wrap:1320px;
  --gutter:clamp(16px,4.4vw,52px);
  --dur:120ms;
  --dur-2:240ms;
  --ease:linear;

  accent-color:var(--magenta);
}

/* ---------- 3. Base typography ---------- */
body{
  background:var(--ink);
  color:var(--on-dark);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
.num,.mono,.footer-mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.surface-paper{background:var(--paper);color:var(--on-light)}
.visually-hidden{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}

/* ---------- 4. Focus ---------- */
:focus{outline:none}
:focus-visible{
  outline:2px solid var(--magenta);
  outline-offset:2px;
  box-shadow:0 0 0 4px var(--brown);
}

/* ---------- 5. Skip link ---------- */
.skip-link{
  position:fixed;left:var(--gutter);top:-80px;z-index:120;
  display:inline-block;padding:11px 18px;
  background:var(--magenta);color:#140610;
  border:var(--bd) solid var(--brown);
  font-size:14px;font-weight:800;letter-spacing:.02em;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 6. Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background-color:var(--ink);
  background-image:var(--scan);
  color:var(--on-dark);
  border-bottom:1px solid var(--hair-dark);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:var(--spectrum);opacity:.35;
  transition:opacity var(--dur) var(--ease);
}
.site-header.is-compact::before{opacity:1}

.scroll-progress{
  position:absolute;left:0;bottom:-1px;z-index:3;
  width:100%;height:2px;
  background:var(--spectrum);
  transform:scaleX(0);transform-origin:0 50%;
  will-change:transform;pointer-events:none;
}

.header-inner{
  position:relative;
  width:100%;max-width:var(--wrap);margin:0 auto;
  min-height:74px;
  padding:14px var(--gutter);
  display:flex;align-items:center;gap:clamp(12px,1.8vw,26px);
  transition:min-height var(--dur) var(--ease),padding var(--dur) var(--ease);
}
.site-header.is-compact .header-inner{min-height:56px;padding-top:7px;padding-bottom:7px}

/* 品牌簇 */
.brand-cluster{display:flex;align-items:baseline;gap:14px;flex:0 0 auto;min-width:0}
.brand-logo{
  display:inline-flex;align-items:center;gap:10px;
  font-size:clamp(20px,1.7vw,26px);font-weight:900;letter-spacing:-.02em;
  color:var(--on-dark);white-space:nowrap;
  transition:font-size var(--dur) var(--ease);
}
.site-header.is-compact .brand-logo{font-size:clamp(18px,1.4vw,22px)}
.brand-glyph{
  flex:none;width:15px;height:15px;
  background:linear-gradient(135deg,var(--magenta) 0%,var(--blue) 52%,var(--green) 100%);
  box-shadow:3px 3px 0 var(--brown);
  transform:skewX(-12deg);
}
.brand-tagline{
  display:inline-block;
  padding-left:12px;
  border-left:2px solid var(--amber);
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.22em;
  color:var(--on-dark-mute);
  white-space:nowrap;
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  margin-left:auto;
  padding:9px 13px;
  border:var(--bd) solid rgba(244,239,230,.55);
  color:var(--on-dark);
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.16em;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle-bars{position:relative;display:block;width:16px;height:2px;background:currentColor}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;
}
.nav-toggle-bars::before{top:-5px}
.nav-toggle-bars::after{top:5px}
.nav-toggle[data-open]{border-color:var(--magenta);color:var(--magenta)}

/* 导航面板 */
.nav-panel{
  display:flex;align-items:center;gap:clamp(10px,1.5vw,24px);
  flex:1 1 auto;min-width:0;
}
.nav-cluster{flex:0 0 auto;min-width:0}
.nav-list{display:flex;align-items:center;gap:clamp(8px,1.25vw,20px)}
.nav-link{
  position:relative;display:inline-block;
  padding:7px 2px;
  font-size:clamp(14px,1.06vw,15.5px);
  font-weight:500;
  color:var(--on-dark);
  white-space:nowrap;
  transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;
  background:var(--spectrum);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{font-weight:800}
.nav-link[aria-current="page"]::before{
  content:"";position:absolute;left:-10px;top:50%;
  width:5px;height:5px;background:var(--magenta);
  transform:translateY(-50%) rotate(45deg);
}

/* 速度线空隙 */
.nav-speed-gap{
  position:relative;flex:1 1 auto;
  min-width:26px;height:2px;overflow:hidden;
  background:linear-gradient(90deg,
    rgba(255,46,147,0) 0%,
    rgba(255,46,147,.6) 18%,
    rgba(44,123,255,.6) 52%,
    rgba(56,248,176,.6) 86%,
    rgba(56,248,176,0) 100%);
}
.nav-speed-gap::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent,var(--paper-2),transparent);
  transform:translateX(-110%);opacity:0;
  transition:transform var(--dur-2) var(--ease),opacity var(--dur-2) var(--ease);
}
.nav-panel:hover .nav-speed-gap::after,
.nav-panel:focus-within .nav-speed-gap::after{transform:translateX(110%);opacity:.9}

/* ---------- 7. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 19px;
  border:var(--bd) solid var(--brown);
  background:var(--paper-2);color:var(--brown);
  font-family:var(--font-sans);font-size:15px;font-weight:800;line-height:1.2;
  box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn:hover{transform:translate(-1px,-2px);box-shadow:var(--shadow-2)}
.btn:active{transform:translate(1px,1px);box-shadow:2px 2px 0 var(--brown)}
.btn--primary{background:var(--magenta);color:#140610;border-color:var(--brown)}
.btn--ghost{background:transparent;color:var(--on-dark);border-color:rgba(244,239,230,.5);box-shadow:4px 4px 0 rgba(244,239,230,.22)}
.btn--ghost:hover{box-shadow:6px 6px 0 rgba(244,239,230,.3)}
.header-cta{flex:0 0 auto;padding:9px 15px;font-size:14px;white-space:nowrap;box-shadow:3px 3px 0 rgba(30,26,23,.9)}

/* ---------- 8. Footer ---------- */
.site-footer{
  position:relative;
  background-color:var(--ink);
  background-image:var(--scan);
  color:var(--on-dark);
  border-top:1px solid var(--hair-dark);
  padding:clamp(44px,6vw,86px) 0 26px;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:2px;
  background:var(--spectrum);
}
.footer-inner{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.footer-grid{
  display:grid;
  grid-template-columns:1.35fr .8fr .95fr .9fr 1.55fr;
  gap:clamp(22px,2.8vw,44px);
  align-items:start;
}
.footer-brand{display:flex;flex-direction:column;gap:14px}
.footer-mark{
  display:inline-flex;align-items:center;gap:10px;
  font-size:clamp(22px,2vw,27px);font-weight:900;letter-spacing:-.02em;
  color:var(--on-dark);
}
.footer-mark-text{display:inline-block}
.footer-note{
  font-size:14px;line-height:1.75;color:var(--on-dark-mute);
  max-width:36ch;
}
.footer-col{min-width:0}
.footer-col-title{
  position:relative;
  margin-bottom:16px;padding-left:14px;
  font-family:var(--font-mono);
  font-size:12px;font-weight:500;letter-spacing:.2em;
  color:var(--on-dark);
}
.footer-col-title::before{
  content:"";position:absolute;left:0;top:.62em;
  width:6px;height:6px;background:var(--amber);
}
.footer-links{display:flex;flex-direction:column;gap:3px}
.footer-link{
  position:relative;display:inline-block;
  padding:5px 0;
  font-size:15px;color:var(--on-dark-mute);
  transition:color var(--dur) var(--ease);
}
.footer-link::after{
  content:"";position:absolute;left:0;right:0;bottom:3px;height:1px;
  background:var(--spectrum);
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform var(--dur) var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--on-dark)}
.footer-link:hover::after,.footer-link:focus-visible::after{transform:scaleX(1)}

.footer-contact{min-width:0}
.footer-contact-list{display:grid;gap:10px;margin-bottom:14px}
.footer-contact-item{
  display:grid;grid-template-columns:74px minmax(0,1fr);gap:10px;
  padding-bottom:9px;
  border-bottom:1px dashed var(--hair-dark);
}
.footer-contact-term{
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.12em;
  color:var(--violet);line-height:1.9;
}
.footer-contact-value{font-size:14.5px;line-height:1.6;color:var(--on-dark);overflow-wrap:anywhere}
.footer-contact-note{
  padding-left:11px;
  border-left:2px solid var(--blue);
  font-size:12.5px;line-height:1.75;
  color:var(--on-dark-mute);
}
.footer-bottom{
  margin-top:clamp(28px,4vw,54px);
  padding-top:16px;
  border-top:1px solid var(--hair-dark);
  display:flex;flex-wrap:wrap;gap:10px 28px;
  align-items:center;justify-content:space-between;
}
.footer-legal{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.05em;color:var(--on-dark-mute)}
.footer-meta{font-size:12.5px;color:var(--violet)}

/* ---------- 9. Layout helpers ---------- */
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.section{padding:clamp(48px,7vw,112px) 0}
.section--tight{padding:clamp(28px,4vw,56px) 0}
.spectrum-rule{width:100%;height:2px;background:var(--spectrum);opacity:.85}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(14px,1.8vw,26px)}

/* ---------- 10. Breadcrumbs ---------- */
.breadcrumbs{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;color:var(--on-dark-mute)}
.breadcrumbs--on-light{color:var(--on-light-mute)}
.breadcrumb-list{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--violet)}
.breadcrumb-item a{color:inherit;border-bottom:1px solid transparent;transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease)}
.breadcrumb-item a:hover,.breadcrumb-item a:focus-visible{color:var(--on-dark);border-bottom-color:var(--magenta)}
.breadcrumbs--on-light .breadcrumb-item a:hover{color:var(--on-light)}
.breadcrumb-item[aria-current="page"]{color:var(--on-dark)}

/* ---------- 11. Prose ---------- */
.prose{max-width:72ch;font-size:17px;line-height:1.75}
.prose > * + *{margin-top:1.05em}
.prose h2{margin-top:1.8em;font-size:clamp(24px,3vw,34px);font-weight:900;line-height:1.25;letter-spacing:-.02em}
.prose h3{margin-top:1.5em;font-size:20px;font-weight:900;line-height:1.35}
.prose ul{display:grid;gap:8px}
.prose ul li{position:relative;padding-left:22px}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:9px;height:2px;background:var(--amber)}
.prose ol{counter-reset:li;display:grid;gap:8px}
.prose ol li{position:relative;padding-left:30px;counter-increment:li}
.prose ol li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:.15em;
  font-family:var(--font-mono);font-size:12.5px;color:var(--magenta);
}
.prose a{color:var(--blue);border-bottom:1px solid rgba(44,123,255,.45);transition:border-color var(--dur) var(--ease)}
.prose a:hover,.prose a:focus-visible{border-bottom-color:var(--blue)}
.prose strong{font-weight:800}
.prose blockquote{
  padding:12px 0 12px 18px;border-left:3px solid var(--amber);
  font-size:17px;color:var(--on-dark-mute);
}

/* ---------- 12. Cards ---------- */
.card{
  position:relative;
  padding:clamp(16px,2vw,26px);
  background:var(--paper-2);color:var(--on-light);
  border:var(--bd) solid var(--brown);
  box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover,.card:focus-within{transform:translate(-1px,-2px);box-shadow:var(--shadow-2)}
.card--ink{background:var(--ink-2);color:var(--on-dark);border-color:var(--on-dark)}
.card--ink:hover{box-shadow:6px 6px 0 var(--on-dark)}
.card-title{font-size:clamp(19px,1.7vw,23px);font-weight:900;line-height:1.3;letter-spacing:-.01em}
.card-meta{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:var(--on-light-mute)}
.card--ink .card-meta{color:var(--on-dark-mute)}
.card-body{font-size:15.5px;line-height:1.7}

/* ---------- 13. Tags ---------- */
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;
  padding:3px 9px;
  border:1px solid var(--amber);color:var(--amber);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  line-height:1.5;white-space:nowrap;
}
.tag--magenta{border-color:var(--magenta);color:var(--magenta)}
.tag--blue{border-color:var(--blue);color:var(--blue)}
.tag--green{border-color:var(--green);color:var(--green)}

/* ---------- 14. Data table ---------- */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.table-scroll:focus-visible{outline:2px solid var(--magenta);outline-offset:4px}
.data-table{
  min-width:640px;
  background:var(--paper-2);color:var(--on-light);
  border:var(--bd) solid var(--brown);
  font-size:15px;
}
.data-table caption{
  padding:10px 14px;text-align:left;
  background:var(--paper-2);color:var(--on-light-mute);
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;
  border:var(--bd) solid var(--brown);border-bottom:0;
}
.data-table th,.data-table td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--hair-light)}
.data-table thead th{
  background:var(--brown);color:var(--paper-2);
  font-family:var(--font-mono);font-size:12.5px;font-weight:500;letter-spacing:.1em;
  white-space:nowrap;
}
.data-table tbody tr{transition:background-color var(--dur) var(--ease)}
.data-table tbody tr:hover{background:rgba(255,46,147,.08)}
.data-table tbody tr:last-child th,.data-table tbody tr:last-child td{border-bottom:0}
.data-table .num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ---------- 15. Rail（横向对比轨道） ---------- */
.rail{
  display:flex;gap:clamp(14px,2vw,24px);
  overflow-x:auto;overscroll-behavior-x:contain;
  padding:6px 2px 20px;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.rail > *{flex:0 0 clamp(238px,30vw,340px);scroll-snap-align:start}
.rail:focus-visible{outline:2px solid var(--magenta);outline-offset:4px}

/* ---------- 16. Media frames ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  border:var(--bd) solid var(--brown);
  background-color:var(--ink-2);
  background-image:
    repeating-linear-gradient(135deg,rgba(244,239,230,.06) 0 1px,transparent 1px 9px);
  box-shadow:6px 6px 0 var(--brown);
}
.media-frame img,.media-frame svg,.media-frame video{
  display:block;width:100%;height:100%;object-fit:cover;
}
.media-frame figcaption{
  position:absolute;left:0;bottom:0;
  padding:6px 11px;
  background:var(--brown);color:var(--paper-2);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  max-width:100%;
}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--21x9{aspect-ratio:21/9}
.media-frame--3x4{aspect-ratio:3/4}

/* ---------- 17. Reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity var(--dur-2) var(--ease),transform var(--dur-2) var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 18. Responsive ---------- */
@media (max-width:1180px){
  .nav-link{font-size:14px}
  .nav-list{gap:10px}
}

@media (max-width:1024px){
  .nav-toggle{display:inline-flex}
  .nav-panel{
    position:absolute;top:100%;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background-color:var(--ink);background-image:var(--scan);
    border-top:1px solid var(--hair-dark);
    border-bottom:var(--bd) solid var(--brown);
    padding:12px var(--gutter) 24px;
    max-height:calc(100vh - 74px);overflow-y:auto;
  }
  .nav-panel[data-open]{display:flex}
  .nav-cluster{padding-top:4px}
  .nav-cluster--info{padding-top:14px}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{display:block;padding:13px 2px;font-size:17px;border-bottom:1px dashed var(--hair-dark);white-space:normal}
  .nav-link[aria-current="page"]::before{left:auto;right:0}
  .nav-speed-gap{flex:0 0 auto;min-width:0;height:2px;margin:18px 0 2px}
  .header-cta{margin-top:20px;align-self:flex-start;padding:11px 20px;font-size:15px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-brand,.footer-contact{grid-column:1 / -1}
  .footer-note,.footer-contact-note{max-width:60ch}
}

@media (max-width:768px){
  html{scroll-padding-top:80px}
  body{font-size:16px}
  .header-inner{min-height:64px;padding-top:11px;padding-bottom:11px}
  .site-header.is-compact .header-inner{min-height:52px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

@media (max-width:560px){
  .brand-tagline{display:none}
  .nav-toggle-text{display:none}
  .nav-toggle{padding:9px 11px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-contact-item{grid-template-columns:minmax(0,1fr);gap:2px}
  .footer-contact-term{line-height:1.6}
}

/* ---------- 19. Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}
  [data-reveal]{opacity:1;transform:none}
  .btn:hover{transform:none}
  .card:hover,.card:focus-within{transform:none}
}