*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:132px}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}
hr{border:0}

:root{
  --pitch-deep:#061A13;
  --pitch-stand:#0D2B20;
  --pitch-line:#1F5C43;
  --score-orange:#FF7A1A;
  --warm-orange:#FFC46B;
  --signal-white:#F4F7F2;
  --paper:#F3EBDD;
  --deep-ink:#101512;
  --mint:#7FE0B0;
  --alert-red:#FF5C4D;
  --line-soft:rgba(31,92,67,.5);
  --line-faint:rgba(31,92,67,.32);
  --line-strong:rgba(31,92,67,.92);
  --shell:1240px;
  --gutter:clamp(16px,4vw,24px);
  --shadow-card:0 1px 0 rgba(0,0,0,.45),0 22px 44px -34px rgba(0,0,0,.95);
  --font-display:"Archivo Black","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

body{
  background:var(--pitch-deep);
  color:var(--signal-white);
  font-family:var(--font-body);
  font-size:clamp(16px,1.05vw,17px);
  line-height:1.75;
  letter-spacing:.01em;
  word-break:break-word;
  overflow-wrap:anywhere;
  -webkit-font-smoothing:antialiased;
}

::selection{background:var(--score-orange);color:#1A0C02}

:where(a,button,input,select,textarea,summary):focus-visible{
  outline:2px solid var(--score-orange);
  outline-offset:3px;
}

/* ---------- 容器与章节 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(44px,7vw,88px)}
.section--paper{background:var(--paper);color:var(--deep-ink)}
.section--paper .lede{color:rgba(16,21,18,.78)}
.section--paper .eyebrow{color:#B4530C}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.22em;
  color:var(--warm-orange);
  text-transform:uppercase;
}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor}
.display-title{
  font-family:var(--font-display);
  font-size:clamp(2.4rem,6vw,5rem);
  line-height:1.04;
  letter-spacing:-.03em;
}
.lede{
  max-width:62ch;
  margin-top:16px;
  font-size:clamp(15px,1.4vw,18px);
  line-height:1.8;
  color:rgba(244,247,242,.78);
}

.prose{max-width:720px;font-size:17px;line-height:1.85;letter-spacing:.01em}
.prose > * + *{margin-top:1.05em}
.prose h2{
  margin-top:1.9em;
  font-family:var(--font-display);
  font-size:clamp(1.5rem,2.6vw,2.1rem);
  line-height:1.28;
  letter-spacing:-.02em;
}
.prose h3{font-size:1.15rem;line-height:1.55;margin-top:1.6em}
.prose ul{display:grid;gap:.55em;padding-left:1.1em}
.prose li{position:relative}
.prose li::before{content:"";position:absolute;left:-1.1em;top:.8em;width:6px;height:1px;background:var(--score-orange)}
.section--paper .prose li::before{background:#B4530C}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:46px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
}
.btn--primary{background:var(--score-orange);border-color:var(--score-orange);color:#1A0C02}
.btn--primary:hover{background:var(--warm-orange);border-color:var(--warm-orange);transform:translateY(-2px)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--signal-white)}
.btn--ghost:hover{border-color:var(--score-orange);color:var(--warm-orange);transform:translateY(-2px)}
.btn-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px}

/* ---------- 标签、面板、数据 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--line-soft);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--mint);
}
.tag--orange{color:var(--warm-orange);border-color:rgba(255,122,26,.55);background:rgba(255,122,26,.08)}
.tag--mint{color:var(--mint);border-color:rgba(127,224,176,.42);background:rgba(127,224,176,.08)}

.panel{
  min-width:0;
  padding:clamp(18px,2.4vw,28px);
  background:var(--pitch-stand);
  border:1px solid var(--line-soft);
  border-radius:2px;
  box-shadow:var(--shadow-card);
}
.panel-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:10px;
  padding-bottom:12px;
  margin-bottom:16px;
  border-bottom:1px solid var(--line-soft);
}
.panel-title{font-family:var(--font-display);font-size:1.05rem;letter-spacing:.01em}
.data-num{
  font-family:var(--font-mono);
  font-size:clamp(28px,4vw,46px);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--warm-orange);
  font-variant-numeric:tabular-nums;
}
.rule{height:1px;background:var(--line-soft);margin-block:18px}

/* ---------- 面包屑 ---------- */
.breadcrumbs{padding-block:13px;border-bottom:1px solid var(--line-faint)}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:rgba(244,247,242,.55);
}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--pitch-line)}
.breadcrumb-link{color:rgba(244,247,242,.72)}
.breadcrumb-link:hover{color:var(--warm-orange)}
.breadcrumb-current{color:var(--warm-orange)}

/* ---------- 栅格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--two{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--three{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--line-soft);
  border-radius:2px;
  background:
    repeating-linear-gradient(90deg,rgba(31,92,67,.26) 0 1px,transparent 1px 52px),
    repeating-linear-gradient(0deg,rgba(31,92,67,.18) 0 1px,transparent 1px 52px),
    linear-gradient(160deg,#0D2B20,#04120d 62%,#123a29);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.85) contrast(1.06) brightness(.92);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,26,19,0) 38%,rgba(6,26,19,.74));
  pointer-events:none;
}
.media-caption{
  position:absolute;
  left:14px;
  bottom:12px;
  z-index:1;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:rgba(244,247,242,.85);
}

/* ---------- 筛选协议 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-block:10px}
.filter-btn{
  padding:7px 13px;
  border:1px solid var(--line-soft);
  background:rgba(13,43,32,.55);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(244,247,242,.76);
  cursor:pointer;
  transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.filter-btn:hover{border-color:var(--warm-orange);color:var(--warm-orange)}
.filter-btn[aria-pressed="true"]{background:var(--score-orange);border-color:var(--score-orange);color:#1A0C02}
.filter-count{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:rgba(127,224,176,.88);
}
[data-filter-item][hidden]{display:none}

/* ---------- 显现协议 ---------- */
html.has-js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .5s ease,transform .5s cubic-bezier(.22,.7,.3,1);
}
html.has-js [data-reveal].is-inview{opacity:1;transform:none}

/* ---------- 跳至主要内容 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:10px 16px;
  background:var(--warm-orange);
  color:var(--deep-ink);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  border-radius:2px;
  transform:translateY(-200%);
  transition:transform .18s ease;
}
.skip-link:focus{transform:none}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--pitch-deep);
  color:var(--signal-white);
  border-bottom:1px solid var(--line-strong);
  box-shadow:0 1px 0 rgba(0,0,0,.4);
}
.header-status{
  max-height:64px;
  overflow:hidden;
  background:linear-gradient(90deg,#04120D,#071F16 55%,#04120D);
  border-bottom:1px solid rgba(31,92,67,.58);
  transition:max-height .28s ease,opacity .2s ease,border-color .2s ease;
}
.site-header[data-scrolled="true"] .header-status{max-height:0;opacity:0;border-bottom-color:transparent}
.status-strip{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:34px;
  padding-block:5px;
  font-size:12px;
  letter-spacing:.06em;
}
.status-signal{
  flex:0 0 auto;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 3px rgba(127,224,176,.14);
  animation:status-pulse 3.2s ease-in-out infinite;
}
@keyframes status-pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(127,224,176,.14)}
  50%{box-shadow:0 0 0 6px rgba(127,224,176,.05)}
}
.status-text{
  flex:1 1 auto;
  min-width:0;
  overflow:hidden;
  white-space:nowrap;
  text-overflow:ellipsis;
  color:rgba(244,247,242,.84);
}
.status-meta{
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--warm-orange);
}

.masthead{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:16px;
  padding-block:14px 12px;
}
.masthead-note{
  justify-self:start;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.5;
  letter-spacing:.18em;
  color:rgba(244,247,242,.55);
  text-transform:uppercase;
}
.masthead-note-sub{
  display:block;
  margin-top:4px;
  font-size:10px;
  letter-spacing:.14em;
  color:rgba(127,224,176,.78);
}
.brand-lockup{
  justify-self:center;
  display:inline-grid;
  grid-auto-flow:column;
  align-items:center;
  gap:10px;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  border:1px solid var(--pitch-line);
  background:rgba(13,43,32,.72);
  color:var(--score-orange);
  font-family:var(--font-mono);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
}
.brand-word{
  font-family:var(--font-display);
  font-size:clamp(20px,2.4vw,26px);
  letter-spacing:-.02em;
  color:var(--signal-white);
}
.brand-sub{
  padding-left:10px;
  border-left:1px solid var(--line-strong);
  font-size:11px;
  letter-spacing:.28em;
  color:var(--warm-orange);
}

.header-quick{
  justify-self:end;
  display:flex;
  align-items:center;
  gap:8px;
  min-width:0;
}
.quick-title{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:rgba(244,247,242,.42);
  white-space:nowrap;
}
.quick-list{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:6px}
.quick-item{display:inline-flex}
.quick-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 9px;
  border:1px solid var(--line-soft);
  background:rgba(13,43,32,.6);
  font-size:11px;
  letter-spacing:.06em;
  color:rgba(244,247,242,.88);
  white-space:nowrap;
  transition:border-color .16s ease,color .16s ease,transform .16s ease;
}
.quick-link:hover,.quick-link:focus-visible{border-color:var(--score-orange);color:#fff;transform:translateY(-1px)}
.quick-dot{flex:0 0 auto;width:5px;height:5px;border-radius:50%;background:var(--mint)}
.quick-dot.is-orange{background:var(--score-orange)}
.quick-dot.is-mint{background:var(--mint);box-shadow:0 0 0 2px rgba(127,224,176,.2)}

.nav-toggle{
  display:none;
  justify-self:end;
  align-items:center;
  gap:9px;
  padding:8px 10px;
  border:1px solid var(--line-strong);
  color:var(--signal-white);
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease;
}
.nav-toggle:hover{border-color:var(--score-orange);color:var(--warm-orange)}
.nav-toggle-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em}
.nav-toggle-bars{display:grid;gap:3px;width:16px}
.nav-toggle-bar{
  display:block;
  height:1.5px;
  background:currentColor;
  transition:transform .2s ease,opacity .2s ease;
}
.site-header[data-open="true"] .nav-toggle-bar:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-bar:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle-bar:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}

.site-nav{
  border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(13,43,32,.55),rgba(6,26,19,0));
}
.nav-list{display:flex;flex-wrap:wrap;justify-content:center;gap:clamp(8px,2.4vw,34px)}
.nav-item{display:inline-flex}
.nav-link{
  display:inline-block;
  padding:13px 2px 11px;
  border-bottom:2px solid transparent;
  font-size:13.5px;
  letter-spacing:.16em;
  color:rgba(244,247,242,.74);
  transition:color .16s ease,border-color .16s ease;
}
.nav-link:hover{color:var(--signal-white);border-bottom-color:var(--warm-orange)}
.nav-link[aria-current="page"]{color:var(--warm-orange);border-bottom-color:var(--score-orange)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  background:linear-gradient(180deg,#071E16,#04120D);
  color:var(--signal-white);
  border-top:1px solid var(--line-strong);
}
.site-footer::before{
  content:"";
  position:absolute;
  right:-8%;
  bottom:-45%;
  width:min(620px,80vw);
  height:360px;
  background:radial-gradient(closest-side,rgba(255,122,26,.16),transparent 72%);
  pointer-events:none;
}
.footer-scale{
  height:14px;
  border-bottom:1px solid var(--line-faint);
  background-image:
    repeating-linear-gradient(90deg,rgba(31,92,67,.95) 0 1px,transparent 1px 24px),
    repeating-linear-gradient(90deg,rgba(255,122,26,.65) 0 1px,transparent 1px 120px);
  background-size:auto 9px,auto 14px;
  background-position:0 100%,0 100%;
  background-repeat:repeat-x;
  opacity:.85;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.25fr) minmax(0,1fr) minmax(0,1.1fr);
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(34px,5vw,62px) clamp(24px,3vw,40px);
}
.footer-brand{display:flex;min-width:0;flex-direction:column;gap:12px}
.footer-lockup{display:inline-flex;align-items:center;gap:10px}
.footer-mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border:1px solid var(--pitch-line);
  background:rgba(13,43,32,.85);
  color:var(--score-orange);
  font-family:var(--font-mono);
  font-size:14px;
  font-weight:700;
}
.footer-word{font-family:var(--font-display);font-size:22px;letter-spacing:-.02em}
.footer-line{font-size:15px;line-height:1.7;color:var(--signal-white)}
.footer-note{max-width:34ch;font-size:13px;line-height:1.8;color:rgba(244,247,242,.62)}
.footer-hours{
  margin-top:2px;
  padding-top:10px;
  border-top:1px solid var(--line-faint);
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.9;
  letter-spacing:.06em;
  color:rgba(127,224,176,.86);
}
.footer-col{min-width:0}
.footer-heading{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.24em;
  color:var(--warm-orange);
}
.footer-links{display:grid;gap:9px}
.footer-link{
  display:inline-block;
  padding-block:2px;
  border-bottom:1px solid transparent;
  font-size:14px;
  color:rgba(244,247,242,.8);
  transition:color .16s ease,border-color .16s ease;
}
.footer-link:hover{color:var(--warm-orange);border-bottom-color:var(--score-orange)}
.footer-contacts{display:grid;gap:10px}
.contact-row{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:baseline;gap:10px;font-size:13px;line-height:1.7}
.contact-key{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:rgba(244,247,242,.42)}
.contact-value{color:rgba(244,247,242,.88)}
.footer-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  padding:10px 16px;
  border:1px solid var(--score-orange);
  color:var(--warm-orange);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  transition:background .16s ease,color .16s ease;
}
.footer-cta:hover{background:var(--score-orange);color:var(--deep-ink)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  padding-block:16px 30px;
  border-top:1px solid var(--line-faint);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:rgba(244,247,242,.52);
}
.footer-copy{color:rgba(244,247,242,.72)}
.footer-legal{color:rgba(244,247,242,.52)}
.footer-icp{margin-left:auto;color:rgba(244,247,242,.62)}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .brand-sub{display:none}
  .masthead-note{font-size:10px;letter-spacing:.12em}
}
@media (max-width:900px){
  html{scroll-padding-top:150px}
  .masthead{grid-template-columns:1fr auto;gap:12px;padding-block:12px 10px}
  .masthead-note{display:none}
  .brand-lockup{justify-self:start}
  .nav-toggle{display:inline-flex}
  .header-quick{
    grid-column:1 / -1;
    justify-self:stretch;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:10px;
    padding-top:9px;
    border-top:1px solid var(--line-faint);
  }
  .quick-title{display:none}
  .quick-list{justify-content:flex-start}
  .site-nav{display:none;border-top:1px solid var(--line-strong);background:var(--pitch-stand)}
  .site-header[data-open="true"] .site-nav{display:block}
  .nav-list{flex-direction:column;gap:0;padding-block:6px 12px}
  .nav-item + .nav-item{border-top:1px solid rgba(31,92,67,.42)}
  .nav-item{display:block}
  .nav-link{
    display:block;
    padding:13px 0 13px 12px;
    border-bottom:0;
    border-left:2px solid transparent;
    letter-spacing:.12em;
  }
  .nav-link[aria-current="page"]{border-left-color:var(--score-orange);background:rgba(255,122,26,.08)}
  .status-meta{display:none}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .grid--three{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  .grid--two,.grid--three{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr;gap:26px}
  .footer-icp{margin-left:0}
  .footer-note{max-width:none}
  .quick-link{font-size:10.5px;padding:5px 7px}
  .display-title{font-size:clamp(2rem,10vw,3rem)}
}

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