/* ===== 九五至尊3官网 · 档案舱共享样式 ===== */

:root{
  --ink:#07080A;
  --ink-2:#111318;
  --ink-3:#191C22;
  --silver:#D6D9DE;
  --silver-2:#8C95A1;
  --gold-deep:#8A6A1F;
  --gold:#C9A227;
  --cinnabar:#C8402E;
  --cinnabar-deep:#7A1F18;
  --paper:#F2EFE8;
  --mist:#5F6670;

  --line:#24272E;
  --line-strong:#343841;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Consolas,monospace;

  --shell:1240px;
  --gutter:clamp(18px,4vw,48px);
  --header-h:64px;

  --ease:cubic-bezier(0.22,1,0.36,1);
  --dur:220ms;

  --shadow-hard:8px 8px 0 0 rgba(0,0,0,.55);
  --border-hard:2px solid var(--line-strong);
}

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

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  min-height:100%;
  color:var(--silver);
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(214,217,222,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(214,217,222,.035) 1px,transparent 1px);
  background-size:64px 64px;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}

img,svg{max-width:100%;}
img{height:auto;display:block;}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.18;
  letter-spacing:.01em;
  color:var(--paper);
  margin:0 0 .5em;
  text-wrap:balance;
}
h1{font-size:clamp(2.25rem,5vw,4rem);letter-spacing:.005em;}
h2{font-size:clamp(1.6rem,3vw,2rem);}
h3{font-size:clamp(1.2rem,2vw,1.5rem);}
p{margin:0 0 1em;}
ul,ol{margin:0 0 1em;padding-left:1.15em;}
li{margin-bottom:.35em;}
li::marker{color:var(--gold-deep);}
a{color:var(--gold);text-decoration:none;}
a:hover{color:var(--paper);}
strong{color:var(--paper);font-weight:700;}
code,kbd,samp{font-family:var(--font-mono);font-size:.9em;color:var(--gold);}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0;}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:3px solid var(--gold);
  outline-offset:3px;
  border-radius:1px;
}

/* ===== 骨架容器 ===== */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

#main-content{display:block;}

/* ===== 跳转链 ===== */
.skip-link{
  position:absolute;
  left:16px;
  top:-80px;
  z-index:120;
  padding:10px 18px;
  background:var(--gold);
  color:var(--ink);
  font-weight:700;
  font-size:13px;
  letter-spacing:.06em;
  text-decoration:none;
  border:2px solid var(--ink);
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px;color:var(--ink);}

/* ===== 头部 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--ink);
}

.header-rail{
  background:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.header-rail__inner{
  display:flex;
  align-items:center;
  gap:clamp(10px,2.4vw,28px);
  min-height:38px;
  padding-block:7px;
}
.header-brandline{
  flex:1 1 auto;
  min-width:0;
  margin:0;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--silver-2);
}
.header-utility{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,20px);
  flex:0 0 auto;
}
.header-utility a{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--silver-2);
  padding-block:2px;
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.header-utility a:hover{color:var(--gold);border-bottom-color:var(--gold-deep);}

.header-main{
  position:relative;
  background:rgba(7,8,10,.94);
  border-bottom:2px solid var(--line-strong);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-main__inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.2vw,28px);
  min-height:var(--header-h);
}

/* 品牌 */
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--paper);
}
.brand__mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  flex:0 0 auto;
  border:2px solid var(--gold);
  background:linear-gradient(150deg,#171A20,#07080A 62%);
  box-shadow:inset 0 0 0 1px rgba(201,162,39,.18);
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--gold);
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{
  display:block;
  font-family:var(--font-display);
  font-size:18px;
  font-weight:700;
  letter-spacing:.07em;
  color:var(--paper);
}
.brand__meta{
  display:block;
  margin-top:5px;
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.24em;
  color:var(--mist);
}
.brand:hover .brand__mark{border-color:var(--cinnabar);color:var(--paper);}
.brand--footer .brand__mark{width:40px;height:40px;font-size:14px;}
.brand--footer .brand__name{font-size:17px;}

/* 移动开关 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:9px 13px;
  border:2px solid var(--line-strong);
  background:transparent;
  color:var(--silver);
  font-family:var(--font-sans);
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold);}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
  width:16px;
  height:12px;
}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg);}
.nav-toggle__label{white-space:nowrap;}

/* 主导航 */
.primary-nav{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,26px);
  margin-left:auto;
}
.primary-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.primary-nav__list li{margin:0;}
.primary-nav__list li::marker{content:none;}
.primary-nav__list a{
  display:block;
  padding:10px 11px;
  font-size:13.5px;
  letter-spacing:.04em;
  color:var(--silver-2);
  border-bottom:2px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.primary-nav__list a:hover{color:var(--paper);border-bottom-color:var(--gold-deep);}
.primary-nav__list a[aria-current="page"]{
  color:var(--gold);
  border-bottom-color:var(--cinnabar);
}
.primary-nav__cta{flex:0 0 auto;}

/* 阅读进度 */
.read-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  pointer-events:none;
}
.read-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--cinnabar),var(--gold));
  transition:width 120ms linear;
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:2px solid transparent;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  letter-spacing:.07em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease),
             color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.btn--solid{
  background:var(--cinnabar);
  border-color:var(--cinnabar);
  color:var(--paper);
  box-shadow:4px 4px 0 0 var(--cinnabar-deep);
}
.btn--solid:hover{
  background:var(--cinnabar-deep);
  border-color:var(--cinnabar-deep);
  color:var(--paper);
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 0 rgba(0,0,0,.65);
}
.btn--solid:active{transform:translate(0,0);box-shadow:2px 2px 0 0 rgba(0,0,0,.65);}
.btn--ghost{
  background:transparent;
  border-color:var(--line-strong);
  color:var(--silver);
}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold);background:rgba(201,162,39,.06);}
.btn--sm{font-size:12px;padding:7px 14px;letter-spacing:.1em;}

/* ===== 通用版式组件 ===== */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold);
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--cinnabar);flex:0 0 auto;}

.breadcrumb{margin:0 0 24px;}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
}
.breadcrumb li{margin:0;display:flex;align-items:center;gap:10px;color:var(--mist);}
.breadcrumb li::marker{content:none;}
.breadcrumb li+li::before{content:"/";color:var(--mist);}
.breadcrumb a{color:var(--silver-2);}
.breadcrumb a:hover{color:var(--gold);}

.prose{max-width:70ch;color:var(--silver);}
.prose h2,.prose h3{margin-top:1.8em;}
.prose h2:first-child,.prose h3:first-child{margin-top:0;}
.prose p{margin:0 0 1.15em;}
.prose ul,.prose ol{padding-left:1.2em;margin:0 0 1.3em;line-height:1.65;}
.prose a{color:var(--gold);border-bottom:1px solid var(--gold-deep);}
.prose a:hover{color:var(--paper);border-bottom-color:var(--paper);}
.prose blockquote{
  margin:1.6em 0;
  padding:14px 20px;
  border-left:3px solid var(--cinnabar);
  background:var(--ink-2);
  color:var(--silver);
}
.prose blockquote p:last-child{margin-bottom:0;}

.grid-split{
  display:grid;
  grid-template-columns:minmax(0,3fr) minmax(0,8fr);
  gap:clamp(24px,4vw,56px);
  align-items:start;
}

.panel{
  border:var(--border-hard);
  background:var(--ink-2);
  padding:clamp(18px,3vw,28px);
  box-shadow:var(--shadow-hard);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  border:1px solid var(--line-strong);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--silver-2);
}
.tag--gold{color:var(--gold);border-color:var(--gold-deep);}

/* 图片容器基础规则（页面阶段放置占位） */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  border:var(--border-hard);
  background-color:var(--ink-2);
  background-image:
    linear-gradient(145deg,rgba(138,106,31,.16),rgba(7,8,10,0) 55%),
    linear-gradient(rgba(214,217,222,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(214,217,222,.06) 1px,transparent 1px);
  background-size:auto,32px 32px,32px 32px;
  box-shadow:var(--shadow-hard);
}
.media-frame__img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame__caption{
  margin:10px 0 0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--mist);
}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--tall{aspect-ratio:3/4;}

/* 章节坐标 */
.toc{
  position:sticky;
  top:calc(var(--header-h) + 52px);
  border-left:2px solid var(--line);
  padding-left:2px;
}
.toc__list{margin:0;padding:0;list-style:none;}
.toc__list li{margin:0;}
.toc__list li::marker{content:none;}
.toc__link{
  display:block;
  padding:8px 0 8px 14px;
  margin-left:-2px;
  border-left:2px solid transparent;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--silver-2);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.toc__link:hover{color:var(--paper);}
.toc__link.is-active{color:var(--gold);border-left-color:var(--cinnabar);}

/* 显现动画 */
.js-reveal{
  opacity:0;
  transform:translateY(10px);
  transition:opacity 320ms var(--ease),transform 320ms var(--ease);
}
.js-reveal.is-visible{opacity:1;transform:none;}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:clamp(48px,8vw,96px);
  background-color:var(--ink-2);
  background-image:
    linear-gradient(rgba(214,217,222,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(214,217,222,.03) 1px,transparent 1px);
  background-size:64px 64px;
  border-top:2px solid var(--gold-deep);
  color:var(--silver-2);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.7fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,4vw,48px);
  padding-block:clamp(36px,6vw,64px) clamp(28px,4vw,44px);
}
.footer-brand{min-width:0;order:0;}
.footer-brand__summary{
  margin:20px 0 22px;
  max-width:46ch;
  font-size:14px;
  line-height:1.75;
  color:var(--silver-2);
}
.footer-contact{
  border-left:2px solid var(--gold-deep);
  padding-left:14px;
}
.footer-contact__item{
  display:flex;
  flex-wrap:wrap;
  gap:4px 10px;
  margin:0 0 8px;
  font-size:13px;
  line-height:1.6;
}
.footer-contact__label{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gold-deep);
  padding-top:2px;
}
.footer-contact__value{color:var(--silver);word-break:break-word;}
.footer-contact__note{
  margin:12px 0 0;
  font-size:12.5px;
  line-height:1.65;
  color:var(--mist);
}
.footer-col__title{
  margin:0 0 16px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--gold);
}
.footer-list{margin:0;padding:0;list-style:none;}
.footer-list li{margin:0 0 2px;}
.footer-list li::marker{content:none;}
.footer-list a{
  display:block;
  padding:7px 0;
  font-size:13.5px;
  letter-spacing:.02em;
  color:var(--silver-2);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-list a:hover{color:var(--paper);border-bottom-color:var(--cinnabar);}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:18px 26px;
  border-top:1px solid var(--line);
}
.footer-legal,
.footer-copy{
  margin:0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--mist);
}
.footer-copy{color:var(--silver-2);}

/* ===== 响应式 ===== */
@media (max-width:1100px){
  .primary-nav__list a{padding:10px 8px;font-size:13px;}
  .primary-nav{gap:14px;}
}

@media (max-width:960px){
  .nav-toggle{display:inline-flex;}
  .primary-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:block;
    margin:0;
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    opacity:0;
    background:var(--ink-2);
    border-bottom:2px solid var(--gold-deep);
    transition:max-height 300ms var(--ease),opacity 200ms var(--ease),visibility 200ms linear;
  }
  .primary-nav[data-open="true"]{
    max-height:min(80vh,660px);
    overflow-y:auto;
    visibility:visible;
    opacity:1;
  }
  .primary-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:6px 0;
  }
  .primary-nav__list a{
    padding:14px var(--gutter);
    font-size:15px;
    border-bottom:1px solid var(--line);
    border-left:2px solid transparent;
  }
  .primary-nav__list a[aria-current="page"]{
    border-bottom-color:var(--line);
    border-left-color:var(--cinnabar);
    background:rgba(200,64,46,.09);
  }
  .primary-nav__cta{
    margin:14px var(--gutter) 20px;
    width:calc(100% - var(--gutter) * 2);
  }
  .grid-split{grid-template-columns:1fr;}
  .toc{position:static;margin-bottom:8px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
}

@media (max-width:680px){
  :root{--header-h:58px;}
  .header-brandline{display:none;}
  .header-rail__inner{justify-content:space-between;}
  .brand__mark{width:38px;height:38px;font-size:13px;}
  .brand__name{font-size:16px;}
  .brand__meta{display:none;}
  .button,.btn{font-size:13px;padding:11px 18px;}
  .footer-grid{padding-block:32px 24px;}
  .media-frame--tall{aspect-ratio:4/5;}
}

@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .read-progress__bar{transition:none;}
  .js-reveal{opacity:1;transform:none;}
}