/* ==========================================================================
   德信赛场 · 共享样式 /assets/site.css
   框架式导航 + 夜间赛场矿物色体系
   ========================================================================== */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,dl,dt,dd,figure,blockquote{margin:0}
ul,ol{padding:0}
img,svg{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
a{color:inherit}
[hidden]{display:none !important}
.is-active{opacity:1}

:root{
  --ink:#071A16;
  --ink-2:#0E2A24;
  --moss:#164034;
  --moss-line:#2F5D4E;
  --stone:#8A938E;
  --paper:#F2EFE6;
  --cyan:#35F0C8;
  --amber:#E8A33D;
  --clay:#A9603F;
  --active:#0A3B33;

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

  --axis-w:12.5rem;
  --rail-h:3.25rem;

  --z-nav:58;
  --z-rail:60;
  --z-skip:200;
}
@media (min-width:900px){
  :root{--axis-w:12.5rem}
}

html{scroll-behavior:smooth}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:clamp(16px,0.35vw + 15px,18px);
  font-weight:400;
  line-height:1.75;
  min-height:100vh;
  padding-top:var(--rail-h);
  overflow-x:hidden;
}
@media (min-width:900px){
  body{padding-left:var(--axis-w)}
}

/* ---------------------------------------------------------------- 焦点 */
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
}

/* ---------------------------------------------------------------- 框架外壳 */
.site-frame{position:relative;z-index:var(--z-rail)}

.skip-link{
  position:absolute;
  top:0;left:0;
  transform:translateY(-160%);
  z-index:var(--z-skip);
  display:inline-block;
  padding:.6rem 1rem;
  background:var(--cyan);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  text-decoration:none;
  transition:transform .16s ease;
}
.skip-link:focus{transform:translateY(0)}

/* 顶部细条 */
.frame-rail{
  position:fixed;
  top:0;left:0;right:0;
  z-index:var(--z-rail);
  height:var(--rail-h);
  display:flex;
  align-items:center;
  gap:1rem;
  padding:0 1rem;
  background:var(--ink-2);
  border-bottom:1px solid var(--moss-line);
  font-family:var(--font-mono);
}
@media (min-width:900px){
  .frame-rail{left:var(--axis-w);padding:0 1.75rem}
}

.frame-brand{
  display:flex;
  align-items:baseline;
  gap:.75rem;
  text-decoration:none;
  min-width:0;
}
.frame-brand__name{
  font-family:var(--font-sans);
  font-size:1rem;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--paper);
  white-space:nowrap;
}
.frame-brand__strap{
  display:none;
  font-size:.6875rem;
  letter-spacing:.14em;
  color:var(--stone);
  white-space:nowrap;
}
@media (min-width:760px){
  .frame-brand__strap{display:inline}
}

.frame-rail__season{
  display:none;
  align-items:baseline;
  gap:.55rem;
  margin-left:auto;
  font-size:.6875rem;
  letter-spacing:.16em;
  color:var(--stone);
  white-space:nowrap;
}
.frame-rail__value{color:var(--cyan);font-size:.8125rem}
@media (min-width:640px){
  .frame-rail__season{display:inline-flex}
}

.frame-utility{
  display:none;
  gap:1.25rem;
  margin-left:1.5rem;
  list-style:none;
  font-size:.6875rem;
  letter-spacing:.14em;
  white-space:nowrap;
}
.frame-utility a{text-decoration:none;color:var(--stone);transition:color .18s ease}
.frame-utility a:hover{color:var(--cyan)}
@media (min-width:900px){
  .frame-utility{display:flex}
}

.frame-rail__progress{
  position:absolute;
  left:0;bottom:-1px;
  width:0;
  height:2px;
  background:var(--cyan);
  transition:width .18s linear;
}

/* 移动目录按钮 */
.nav-toggle{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.5rem .8rem;
  background:transparent;
  border:1px solid var(--moss-line);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{
  position:relative;
  display:inline-block;
  width:14px;height:2px;
  background:currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;
  width:14px;height:2px;
  background:currentColor;
  transition:transform .18s ease;
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}
@media (min-width:640px){
  .nav-toggle{margin-left:1.25rem}
}
@media (min-width:900px){
  .nav-toggle{display:none}
}

/* 导航：移动端下拉面板 */
.frame-nav{
  position:fixed;
  top:var(--rail-h);left:0;right:0;
  z-index:var(--z-nav);
  max-height:calc(100vh - var(--rail-h));
  max-height:calc(100dvh - var(--rail-h));
  overflow-y:auto;
  padding:1.25rem 1.25rem 1.75rem;
  background:var(--ink-2);
  border-bottom:1px solid var(--moss-line);
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s;
}
.frame-nav[data-open="true"]{
  opacity:1;
  visibility:visible;
  transform:translateY(0);
}
@media (min-width:900px){
  .frame-nav{
    top:var(--rail-h);bottom:0;right:auto;
    width:var(--axis-w);
    max-height:none;
    overflow-y:auto;
    border-bottom:0;
    border-right:1px solid var(--moss-line);
    padding:1.75rem 1.15rem 1.5rem;
    opacity:1;
    visibility:visible;
    transform:none;
    display:flex;
    flex-direction:column;
  }
}

.frame-nav__caption{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.18em;
  color:var(--stone);
  margin-bottom:1rem;
}
.frame-nav__list{
  list-style:none;
  display:grid;
}
.frame-nav__item{border-bottom:1px solid rgba(47,93,78,.6)}
.frame-nav__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:.7rem;
  padding:.7rem .3rem .7rem .1rem;
  color:var(--stone);
  text-decoration:none;
  transition:color .18s ease,padding-left .18s ease,background-color .18s ease;
}
.frame-nav__link:hover{color:var(--paper);background:var(--active)}
.frame-nav__link[aria-current="page"]{
  color:var(--paper);
  padding-left:1.15rem;
  background:var(--active);
}
.frame-nav__link[aria-current="page"]::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:.45rem;height:.45rem;
  margin-top:-.225rem;
  border-radius:50%;
  background:var(--cyan);
}
.frame-nav__no{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  color:var(--moss-line);
}
.frame-nav__link[aria-current="page"] .frame-nav__no{color:var(--cyan)}
.frame-nav__text{font-size:1rem}

.frame-nav__foot{
  display:grid;
  gap:.5rem;
  margin-top:1.75rem;
}
@media (min-width:900px){
  .frame-nav__foot{margin-top:auto;padding-top:2rem}
}

/* ---------------------------------------------------------------- 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.7rem 1rem;
  border:1px solid transparent;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--solid{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}
.btn--solid:hover{background:var(--paper);border-color:var(--paper)}
.btn--line{background:transparent;color:var(--paper);border-color:var(--moss-line)}
.btn--line:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--quiet{background:transparent;color:var(--stone);border-color:transparent;padding-inline:.4rem}
.btn--quiet:hover{color:var(--cyan)}

/* ---------------------------------------------------------------- 布局容器 */
.wrap{width:min(100% - 2.5rem,76rem);margin-inline:auto}
@media (min-width:900px){
  .wrap{width:min(100% - 4rem,76rem)}
}

.section{padding-block:clamp(3.5rem,9vw,7rem)}
.section--ink{background:var(--ink-2)}
.section--moss{background:var(--moss)}
.section--paper{background:var(--paper);color:#1C2A26}
.section--paper .eyebrow{color:var(--clay)}
.section--paper .lede{color:#33453E}
.section--paper .note{color:#5C6A63}
.section--paper .rule{border-top-color:#CFC9B8}
.section--paper .card{background:#E7E2D5;border-color:#CFC9B8}
.section--paper .panel{background:#E7E2D5;border-color:#CFC9B8}
.section--paper .link-more{color:#1C2A26;border-bottom-color:#A9603F}
.section--paper .btn--line{color:#1C2A26;border-color:#B9B2A0}
.section--paper .btn--line:hover{border-color:var(--clay);color:var(--clay)}

.section__head{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:clamp(.75rem,2.5vw,1.75rem);
  align-items:start;
  margin-bottom:clamp(1.75rem,4vw,3rem);
}

/* ---------------------------------------------------------------- 排版 */
.display{
  font-size:clamp(2.6rem,8vw,7.5rem);
  line-height:.95;
  letter-spacing:-.02em;
  font-weight:700;
  margin:0;
}
.chapter-no{
  font-family:var(--font-mono);
  font-size:clamp(2rem,5.5vw,4rem);
  font-weight:500;
  line-height:1;
  letter-spacing:.02em;
  color:var(--clay);
  transition:color .3s ease;
}
[data-chapter]{position:relative}
[data-chapter].is-active .chapter-no{color:var(--cyan)}

.eyebrow{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:.75rem;
}
.lede{
  font-size:clamp(1.0625rem,1.5vw,1.375rem);
  line-height:1.7;
  font-weight:400;
  max-width:34em;
}
.numeric{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.25rem,2.4vw,2.25rem);
  letter-spacing:.02em;
  line-height:1.2;
}
.note{
  font-size:.875rem;
  line-height:1.7;
  color:var(--stone);
  max-width:34em;
}
.prose p{margin-bottom:1.1em;max-width:34em}
.prose h2,.prose h3{margin:1.8em 0 .6em;font-weight:500;line-height:1.35}
.prose h2{font-size:1.375rem}
.prose h3{font-size:1.125rem}
.prose ul{margin:0 0 1.2em;padding-left:1.1em;max-width:34em}
.prose li{margin-bottom:.4em}
.prose a{color:var(--cyan);text-decoration:none;border-bottom:1px solid rgba(53,240,200,.4)}
.section--paper .prose a{color:var(--clay);border-bottom-color:rgba(169,96,63,.45)}

/* ---------------------------------------------------------------- 栅格 */
.grid{display:grid;gap:clamp(1rem,2.5vw,2rem)}
.grid--2{grid-template-columns:1fr}
.grid--3{grid-template-columns:1fr}
.grid--aside{grid-template-columns:1fr}
@media (min-width:720px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1080px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:900px){
  .grid--aside{grid-template-columns:minmax(0,1fr) minmax(0,3fr)}
}

/* ---------------------------------------------------------------- 组件 */
.panel{
  background:var(--moss);
  border:1px solid var(--moss-line);
  padding:clamp(1.25rem,3vw,2rem);
}
.card{
  display:flex;
  flex-direction:column;
  gap:.75rem;
  background:var(--ink-2);
  border:1px solid var(--moss-line);
  padding:clamp(1.1rem,2.6vw,1.75rem);
  transition:border-color .18s ease;
}
.card:hover{border-color:var(--cyan)}
.card__title{font-size:1.125rem;font-weight:500;line-height:1.4}
.card__meta{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--stone);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.25rem .5rem;
  border:1px solid var(--moss-line);
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  color:var(--stone);
  white-space:nowrap;
}
.tag--cyan{color:var(--cyan);border-color:var(--cyan)}
.tag--amber{color:var(--amber);border-color:var(--amber)}

.pulse{
  display:inline-block;
  width:.5rem;height:.5rem;
  border-radius:50%;
  background:var(--cyan);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:.45}
  50%{opacity:1}
}

.rule{border:0;border-top:1px solid var(--moss-line);margin:0}

.breadcrumb{margin-bottom:clamp(1rem,2vw,1.5rem)}
.breadcrumb ol{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:.4rem .2rem;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  color:var(--stone);
}
.breadcrumb li::after{content:"/";margin:0 .6rem;color:var(--moss-line)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{text-decoration:none;color:var(--stone);transition:color .18s ease}
.breadcrumb a:hover{color:var(--cyan)}

.link-more{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding-bottom:.15rem;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  text-decoration:none;
  color:var(--cyan);
  border-bottom:1px solid rgba(53,240,200,.35);
}
.link-more::after{content:"→";transition:transform .18s ease}
.link-more:hover::after{transform:translateX(4px)}

.data-table{
  font-family:var(--font-mono);
  font-size:.8125rem;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}
.data-table th,
.data-table td{
  padding:.6rem .75rem;
  text-align:left;
  border-bottom:1px solid var(--moss-line);
}
.data-table thead th{
  background:var(--moss);
  color:var(--paper);
  font-size:.6875rem;
  font-weight:500;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.data-table tbody tr:hover{background:var(--active)}
.section--paper .data-table thead th{background:#1C2A26;color:var(--paper)}
.section--paper .data-table th,
.section--paper .data-table td{border-bottom-color:#CFC9B8}

.kv{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:.5rem 1.25rem;
  font-size:.9375rem;
}
.kv dt{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  color:var(--stone);
}
.kv dd{margin:0}

/* ---------------------------------------------------------------- 图片容器 */
.media{
  position:relative;
  overflow:hidden;
  background:var(--moss);
  border:1px solid var(--moss-line);
}
.media > img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:grayscale(1) contrast(1.06);
}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:.75rem 1rem;
  background:linear-gradient(to top,rgba(7,26,22,.92),rgba(7,26,22,0));
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.14em;
  color:var(--paper);
}
.media__overlay{position:absolute;top:.75rem;left:.75rem}

/* ---------------------------------------------------------------- 标签页 */
.tabs__list{
  display:flex;
  flex-wrap:wrap;
  gap:.25rem;
  border-bottom:1px solid var(--moss-line);
}
.tabs__tab{
  appearance:none;
  background:transparent;
  border:1px solid transparent;
  color:var(--stone);
  padding:.6rem .9rem;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  cursor:pointer;
  transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.tabs__tab:hover{color:var(--paper);background:var(--active)}
.tabs__tab[aria-selected="true"]{
  color:var(--cyan);
  background:var(--active);
  box-shadow:inset 0 -2px 0 0 var(--cyan);
}
.tabs__panel{padding-top:1.5rem}

/* ---------------------------------------------------------------- 页脚 */
.site-foot{
  background:var(--ink);
  border-top:1px solid var(--moss-line);
  padding:clamp(2.5rem,6vw,4.5rem) 0 1.5rem;
  color:var(--stone);
}
.site-foot__inner{
  width:min(100% - 2.5rem,76rem);
  margin-inline:auto;
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(1.75rem,4vw,2.5rem);
}
@media (min-width:700px){
  .site-foot__inner{grid-template-columns:1.3fr 1fr 1fr}
}
@media (min-width:1080px){
  .site-foot__inner{grid-template-columns:1.6fr .9fr .9fr .9fr 1.5fr}
}

.site-foot__brand{display:grid;gap:.5rem;align-content:start}
.site-foot__name{
  font-size:1.25rem;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--paper);
  text-decoration:none;
}
.site-foot__name:hover{color:var(--cyan)}
.site-foot__strap{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  color:var(--stone);
}
.site-foot__closing{
  font-size:.9375rem;
  color:var(--paper);
  max-width:24em;
}

.site-foot__col{display:grid;gap:0;align-content:start}
.site-foot__title{
  font-family:var(--font-mono);
  font-size:.6875rem;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--stone);
  margin-bottom:.9rem;
}
.site-foot__list{
  list-style:none;
  display:grid;
  gap:.55rem;
  font-size:.9375rem;
}
.site-foot__list a{
  text-decoration:none;
  color:var(--paper);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.site-foot__list a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

.site-foot__contact{display:grid;gap:.85rem;align-content:start}
.site-foot__data{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:.4rem 1rem;
  font-size:.875rem;
}
.site-foot__data dt{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.14em;
  color:var(--stone);
  padding-top:.15rem;
}
.site-foot__value{
  margin:0;
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:.8125rem;
  letter-spacing:.02em;
  word-break:break-word;
}
.site-foot__note{
  font-size:.8125rem;
  line-height:1.7;
  color:var(--stone);
  max-width:30em;
}

.site-foot__legal{
  width:min(100% - 2.5rem,76rem);
  margin:clamp(2.5rem,5vw,4rem) auto 0;
  padding-top:1.25rem;
  border-top:1px solid var(--moss-line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.75rem 1.5rem;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.14em;
  color:var(--stone);
}
.site-foot__icp{color:var(--stone)}
.site-foot__links{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:1.25rem;
}
.site-foot__links a{text-decoration:none;color:var(--stone);transition:color .18s ease}
.site-foot__links a:hover{color:var(--cyan)}
.site-foot__year{margin-left:auto;color:var(--stone)}

/* ---------------------------------------------------------------- 显现 */
[data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .5s ease,transform .5s ease;
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------------------------------------------------------------- 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;
  }
  [data-reveal]{opacity:1;transform:none}
  .frame-rail__progress{transition:none}
  .nav-toggle__bars::before,
  .nav-toggle__bars::after{transition:none}
}