:root{
  --hb-ink:#111214;
  --hb-ink-2:#1B1E22;
  --hb-paper:#F4F1EA;
  --hb-flame:#F4511E;
  --hb-lava:#C62828;
  --hb-blue:#2F9BFF;
  --hb-steel:#8C95A3;
  --hb-line:#D8D2C6;
  --hb-amber:#FFC247;
  --hb-void:#07080A;
  --hb-hair:rgba(216,210,198,.16);
  --hb-hair-soft:rgba(216,210,198,.09);
  --hb-max:1320px;
  --hb-gutter:clamp(18px,4vw,48px);
  --hb-ease:cubic-bezier(.2,.7,.2,1);
  --hb-ease-cut:cubic-bezier(.3,1.2,.3,1);
  --hb-font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --hb-font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:clamp(96px,14vh,140px)}
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%;height:auto}
button{font:inherit;color:inherit}
a{color:inherit}

body{
  background-color:var(--hb-ink);
  background-image:
    linear-gradient(rgba(216,210,198,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(216,210,198,.045) 1px,transparent 1px);
  background-size:100% 60px,60px 100%;
  background-attachment:fixed;
  color:var(--hb-paper);
  font-family:var(--hb-font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

#main-content{display:block;min-height:46vh}
h1,h2,h3,h4{line-height:1.18;font-weight:900;letter-spacing:.01em}
h1{font-size:clamp(32px,5.2vw,64px)}
h2{font-size:clamp(24px,3.4vw,38px)}
h3{font-size:clamp(18px,2vw,24px)}
h4{font-size:clamp(16px,1.5vw,19px)}
p{max-width:68ch}
strong{font-weight:700}
::selection{background:var(--hb-flame);color:#111214}

:focus-visible{outline:2px solid var(--hb-blue);outline-offset:3px;border-radius:2px}

/* ---------- 基础工具 ---------- */
.hb-container{width:100%;max-width:var(--hb-max);margin-inline:auto;padding-inline:var(--hb-gutter)}
.hb-mono{font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.18em;font-weight:500;text-transform:uppercase}
.hb-visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.hb-rule{height:1px;border:0;margin:0;background:repeating-linear-gradient(90deg,var(--hb-line) 0 8px,transparent 8px 18px);opacity:.35}
.hb-kicker{font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--hb-steel);display:block;margin-bottom:10px}
.hb-index{font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--hb-flame)}
.hb-tag{display:inline-flex;align-items:center;gap:6px;font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.14em;padding:4px 9px;color:var(--hb-amber);border:1px solid rgba(255,194,71,.65);background:rgba(255,194,71,.08);border-radius:2px;line-height:1.4}
.hb-note{font-size:13px;line-height:1.7;color:var(--hb-steel);border-left:2px solid var(--hb-flame);padding-left:12px;margin:0 0 1em;max-width:52ch}
.hb-link{color:var(--hb-paper);text-decoration:none;border-bottom:1px solid var(--hb-flame);transition:color .2s var(--hb-ease),border-color .2s var(--hb-ease)}
.hb-link:hover{color:var(--hb-flame)}

/* ---------- 跳转链接 ---------- */
.hb-skip{position:absolute;left:14px;top:-80px;z-index:300;display:inline-block;padding:10px 18px;background:var(--hb-flame);color:#111214;font-weight:700;font-size:14px;text-decoration:none;border-radius:2px;transition:top .2s var(--hb-ease)}
.hb-skip:focus,.hb-skip:focus-visible{top:14px}

/* ---------- 刊头 ---------- */
.hb-header{
  position:sticky;top:0;z-index:120;
  background:rgba(17,18,20,.96);
  border-bottom:1px solid var(--hb-hair);
  box-shadow:0 12px 24px -22px rgba(0,0,0,.9);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.hb-header[data-scrolled="true"]{box-shadow:0 14px 28px -18px rgba(0,0,0,1)}
.hb-header__progress{display:block;height:3px;background:rgba(216,210,198,.12);overflow:hidden}
.hb-header__progress-bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--hb-flame),var(--hb-lava));transition:width .1s linear}
.hb-header__rail{position:relative}
.hb-header__rail-inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
  padding-block:14px;border-bottom:1px dashed var(--hb-hair);
  transition:padding .24s var(--hb-ease);
}
.hb-header[data-scrolled="true"] .hb-header__rail-inner{padding-block:9px}
.hb-header__coord{color:var(--hb-steel);justify-self:start;font-size:10px;letter-spacing:.2em;white-space:nowrap}
.hb-header__utility{display:flex;align-items:center;gap:8px;justify-self:end}

.hb-masthead{display:flex;align-items:center;gap:12px;text-decoration:none;justify-self:center;color:var(--hb-paper)}
.hb-masthead__brand{font-size:clamp(20px,2.4vw,28px);font-weight:900;letter-spacing:.05em;line-height:1;white-space:nowrap}
.hb-masthead__divider{width:1px;height:26px;background:linear-gradient(180deg,var(--hb-flame),rgba(244,81,30,0))}
.hb-masthead__meta{display:flex;flex-direction:column;gap:2px;line-height:1.1}
.hb-masthead__latin{font-family:var(--hb-font-mono);font-size:10px;letter-spacing:.24em;color:var(--hb-steel);white-space:nowrap}
.hb-masthead__tag{font-family:var(--hb-font-mono);font-size:10px;letter-spacing:.2em;color:var(--hb-flame);white-space:nowrap}
.hb-masthead:hover .hb-masthead__brand{color:#fff}

.hb-chip{display:inline-flex;align-items:center;gap:6px;font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.1em;color:var(--hb-paper);background:rgba(27,30,34,.92);border:1px solid rgba(216,210,198,.22);padding:6px 10px;border-radius:999px;line-height:1.2;white-space:nowrap}
.hb-chip__dot{width:6px;height:6px;border-radius:50%;background:var(--hb-blue);box-shadow:0 0 0 3px rgba(47,155,255,.18);flex:none}
.hb-chip--link{color:var(--hb-amber);text-decoration:none;transition:background-color .2s var(--hb-ease),color .2s var(--hb-ease),border-color .2s var(--hb-ease)}
.hb-chip--link:hover{background:var(--hb-amber);color:#111214;border-color:var(--hb-amber)}

/* ---------- 导航 ---------- */
.hb-nav{position:relative}
.hb-nav__inner{position:relative;display:flex;align-items:center;justify-content:center;padding-block:6px}
.hb-nav__list{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:clamp(8px,1.8vw,24px);margin:0;padding:6px 0}
.hb-nav__link{position:relative;display:inline-flex;align-items:baseline;gap:6px;padding:6px 2px;color:var(--hb-paper);text-decoration:none;font-size:14px;font-weight:500;letter-spacing:.05em;line-height:1.4;transition:color .2s var(--hb-ease)}
.hb-nav__num{font-family:var(--hb-font-mono);font-size:10px;letter-spacing:.1em;color:var(--hb-steel);transition:color .2s var(--hb-ease)}
.hb-nav__link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--hb-flame);transform:scaleX(0);transform-origin:left center;transition:transform .24s var(--hb-ease)}
.hb-nav__link:hover{color:#fff}
.hb-nav__link:hover::after,.hb-nav__link:focus-visible::after{transform:scaleX(1)}
.hb-nav__link[aria-current="page"]{color:#fff}
.hb-nav__link[aria-current="page"] .hb-nav__num{color:var(--hb-flame)}
.hb-nav__link[aria-current="page"]::after{transform:scaleX(1);background:linear-gradient(90deg,var(--hb-flame),var(--hb-lava))}
.hb-nav__cta{display:none;position:absolute;right:var(--hb-gutter);top:50%;transform:translateY(-50%)}
.hb-nav__quick{display:none}

.hb-nav__toggle{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;background:transparent;border:1px solid rgba(216,210,198,.3);border-radius:2px;color:var(--hb-paper);font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.16em;cursor:pointer;transition:border-color .2s var(--hb-ease),color .2s var(--hb-ease)}
.hb-nav__toggle:hover{border-color:var(--hb-flame);color:var(--hb-flame)}
.hb-nav__toggle-icon{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:16px;height:14px}
.hb-nav__bar{display:block;height:2px;width:100%;background:currentColor;transition:transform .24s var(--hb-ease),opacity .2s var(--hb-ease)}
.hb-nav__toggle[aria-expanded="true"] .hb-nav__bar:nth-child(1){transform:translateY(3px) rotate(45deg)}
.hb-nav__toggle[aria-expanded="true"] .hb-nav__bar:nth-child(2){transform:translateY(-3px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.hb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 20px;border:1px solid transparent;border-radius:2px;
  font-family:var(--hb-font-sans);font-size:14px;font-weight:700;letter-spacing:.06em;line-height:1;
  text-decoration:none;cursor:pointer;
  clip-path:polygon(0 0,100% 0,calc(100% - 11px) 100%,0 100%);
  transition:transform .2s var(--hb-ease),box-shadow .2s var(--hb-ease),background-color .2s var(--hb-ease),color .2s var(--hb-ease),border-color .2s var(--hb-ease);
}
.hb-btn--flame{background:var(--hb-flame);color:#111214;box-shadow:4px 4px 0 rgba(198,40,40,.55)}
.hb-btn--flame:hover{background:#ff6a34;transform:translate(-1px,-2px);box-shadow:6px 6px 0 rgba(198,40,40,.6)}
.hb-btn--ghost{background:transparent;color:var(--hb-paper);border-color:rgba(216,210,198,.4)}
.hb-btn--ghost:hover{border-color:var(--hb-flame);color:var(--hb-flame);transform:translate(-1px,-2px)}
.hb-btn--sm{padding:9px 15px;font-size:12px;letter-spacing:.1em;clip-path:polygon(0 0,100% 0,calc(100% - 8px) 100%,0 100%)}

/* ---------- 页面骨架 ---------- */
.hb-page-head{position:relative;padding-block:clamp(26px,4vw,52px);border-bottom:1px solid var(--hb-hair)}
.hb-page-head__title{margin:0 0 12px;max-width:20ch}
.hb-section{position:relative;padding-block:clamp(34px,6vw,80px)}
.hb-section + .hb-section{border-top:1px solid var(--hb-hair-soft)}
.hb-section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px 24px;margin-bottom:clamp(18px,3vw,34px)}
.hb-grid{display:grid;grid-template-columns:repeat(var(--hb-cols,12),minmax(0,1fr));gap:clamp(14px,2vw,26px)}
.hb-grid--auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.hb-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:clamp(22px,3vw,48px);align-items:start}

/* ---------- 面包屑 ---------- */
.hb-breadcrumb{font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.14em;color:var(--hb-steel);margin-bottom:clamp(14px,2vw,24px)}
.hb-breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0}
.hb-breadcrumb a{color:var(--hb-steel);text-decoration:none;transition:color .2s var(--hb-ease)}
.hb-breadcrumb a:hover{color:var(--hb-flame)}
.hb-breadcrumb__sep{color:rgba(216,210,198,.4)}
.hb-breadcrumb [aria-current="page"]{color:var(--hb-paper)}

/* ---------- 卡片 ---------- */
.hb-card{position:relative;display:flex;flex-direction:column;gap:10px;padding:clamp(16px,2vw,24px);background:var(--hb-ink-2);border:1px solid var(--hb-hair);transition:transform .24s var(--hb-ease),border-color .24s var(--hb-ease)}
.hb-card:hover{transform:translateY(-3px);border-color:rgba(244,81,30,.6)}
.hb-card__meta{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 12px;font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.14em;color:var(--hb-steel)}
.hb-card__title{font-size:clamp(17px,1.6vw,21px);font-weight:700;line-height:1.4;margin:0}
.hb-card--paper{background:var(--hb-paper);color:var(--hb-ink);border-color:var(--hb-line)}
.hb-card--paper .hb-card__meta{color:#5b6068}
.hb-card--paper .hb-card__title{color:var(--hb-ink)}

/* ---------- 图片容器 ---------- */
.hb-img{position:relative;display:block;width:100%;aspect-ratio:16/10;overflow:hidden;border:1px solid var(--hb-hair);background-color:#15181c;background-image:linear-gradient(135deg,rgba(244,81,30,.18),rgba(198,40,40,0) 55%),repeating-linear-gradient(45deg,rgba(216,210,198,.06) 0 1px,transparent 1px 12px)}
.hb-img img{width:100%;height:100%;object-fit:cover}
.hb-img--wide{aspect-ratio:21/9}
.hb-img--tall{aspect-ratio:3/4}
.hb-img--square{aspect-ratio:1/1}
.hb-img--cut{clip-path:polygon(0 0,100% 0,100% calc(100% - 46px),calc(100% - 46px) 100%,0 100%)}
.hb-img__frame{position:absolute;inset:10px;border:1px solid rgba(244,241,234,.22);pointer-events:none}
.hb-img__caption{display:block;margin-top:8px;font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.12em;color:var(--hb-steel)}

/* ---------- 目录跟随 ---------- */
.hb-toc{position:sticky;top:clamp(96px,14vh,140px);font-size:13px;line-height:1.6}
.hb-toc__title{margin:0 0 10px;font-family:var(--hb-font-mono);font-size:11px;font-weight:500;letter-spacing:.2em;color:var(--hb-flame);text-transform:uppercase}
.hb-toc__list{margin:0;padding:0;list-style:none;border-left:1px solid rgba(216,210,198,.2)}
.hb-toc__link{display:block;margin-left:-1px;padding:7px 0 7px 12px;color:var(--hb-steel);text-decoration:none;border-left:2px solid transparent;transition:color .2s var(--hb-ease),border-color .2s var(--hb-ease)}
.hb-toc__link:hover{color:var(--hb-paper)}
.hb-toc__link[aria-current="true"]{color:var(--hb-paper);border-left-color:var(--hb-flame);background:linear-gradient(90deg,rgba(244,81,30,.14),transparent)}

/* ---------- 返回顶部 ---------- */
.hb-totop{position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:110;display:inline-flex;align-items:center;gap:8px;padding:11px 15px;border:0;background:var(--hb-flame);color:#111214;font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.16em;cursor:pointer;clip-path:polygon(0 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .24s var(--hb-ease),transform .24s var(--hb-ease),visibility .24s var(--hb-ease)}
.hb-totop[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.hb-totop:hover{background:#ff6a34}

/* ---------- 入场 ---------- */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .52s var(--hb-ease),transform .52s var(--hb-ease)}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 页脚 ---------- */
.hb-footer{position:relative;margin-top:clamp(24px,5vw,64px);padding-top:clamp(38px,5vw,64px);background:var(--hb-void);color:var(--hb-paper);border-top:1px solid var(--hb-hair);overflow:hidden}
.hb-footer__stripe{position:absolute;top:0;left:0;right:0;height:8px;background:linear-gradient(90deg,var(--hb-flame),var(--hb-lava) 58%,var(--hb-blue));clip-path:polygon(0 0,100% 0,100% 45%,0 100%)}
.hb-footer__inner{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1.6fr);gap:clamp(26px,4vw,56px);padding-bottom:clamp(26px,4vw,46px);border-bottom:1px solid var(--hb-hair)}
.hb-footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:0}
.hb-footer__lockup{font-size:clamp(24px,3vw,34px);font-weight:900;letter-spacing:.03em;line-height:1;color:var(--hb-paper);text-decoration:none}
.hb-footer__lockup:hover{color:var(--hb-flame)}
.hb-footer__latin{margin:8px 0 12px;font-family:var(--hb-font-mono);font-size:10px;letter-spacing:.28em;color:var(--hb-steel)}
.hb-footer__note{margin:16px 0 0;max-width:34ch;font-size:13px;line-height:1.7;color:var(--hb-steel);border-left:2px solid rgba(244,81,30,.65);padding-left:12px}
.hb-footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(14px,3vw,30px)}
.hb-footer__col{min-width:0}
.hb-footer__title{margin:0 0 12px;font-family:var(--hb-font-mono);font-size:11px;font-weight:500;letter-spacing:.2em;color:var(--hb-flame);text-transform:uppercase;line-height:1.4}
.hb-footer__list{display:grid;gap:8px;margin:0;padding:0;list-style:none}
.hb-footer__list a{display:inline-block;color:var(--hb-paper);font-size:14px;text-decoration:none;line-height:1.6;transition:color .2s var(--hb-ease),padding-left .2s var(--hb-ease)}
.hb-footer__list a:hover{color:var(--hb-flame);padding-left:5px}
.hb-footer__meta{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px 24px;padding-block:20px 30px;font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.08em;line-height:1.8;color:var(--hb-steel)}
.hb-footer__meta p{margin:0;max-width:none}
.hb-footer__legal{color:var(--hb-steel)}
.hb-footer__contact{color:var(--hb-steel)}

/* ---------- 平板 ---------- */
@media (max-width:1180px){
  .hb-header__coord{display:none}
  .hb-header__rail-inner{grid-template-columns:1fr auto}
  .hb-masthead{justify-self:start}
}
@media (max-width:1023px){
  .hb-layout{grid-template-columns:minmax(0,1fr)}
  .hb-toc{position:static;top:auto}
  .hb-footer__inner{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 移动端刊头与抽屉 ---------- */
@media (max-width:959px){
  .hb-header__rail-inner{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-block:10px;border-bottom:none}
  .hb-nav{display:none;position:absolute;left:0;right:0;top:100%;z-index:130;background:var(--hb-ink-2);background-image:linear-gradient(rgba(216,210,198,.05) 1px,transparent 1px);background-size:100% 36px;border-top:1px solid var(--hb-hair);border-bottom:2px solid var(--hb-flame);padding:6px 0 18px;max-height:calc(100vh - 80px);max-height:calc(100dvh - 80px);overflow-y:auto;overscroll-behavior:contain}
  .hb-nav[data-open="true"]{display:block;animation:hb-drop .28s var(--hb-ease)}
  .hb-nav__inner{display:block;padding-inline:0}
  .hb-nav__list{flex-direction:column;align-items:stretch;gap:0;padding:0 var(--hb-gutter)}
  .hb-nav__link{display:flex;justify-content:space-between;align-items:center;padding:14px 4px;font-size:16px;border-bottom:1px solid rgba(216,210,198,.12)}
  .hb-nav__link::after{display:none}
  .hb-nav__link[aria-current="page"]{color:var(--hb-flame)}
  .hb-nav__num{order:2;font-size:11px}
  .hb-nav__cta{display:none}
  .hb-nav__quick{display:block;margin-top:14px;padding:14px var(--hb-gutter) 0;border-top:1px dashed var(--hb-hair)}
  .hb-nav__quick-title{margin:0 0 8px;font-family:var(--hb-font-mono);font-size:11px;letter-spacing:.2em;color:var(--hb-amber);text-transform:uppercase}
  .hb-nav__quick-list{display:grid;gap:2px;margin:0;padding:0;list-style:none}
  .hb-nav__quick-link{display:block;padding:10px 0;color:var(--hb-paper);font-size:14px;text-decoration:none;border-bottom:1px solid rgba(216,210,198,.08);transition:color .2s var(--hb-ease),padding-left .2s var(--hb-ease)}
  .hb-nav__quick-link:hover{color:var(--hb-flame);padding-left:5px}
  .hb-chip:not(.hb-chip--link){display:none}
  .hb-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:599px){
  .hb-nav__toggle-label{display:none}
  .hb-masthead__latin{letter-spacing:.18em}
  .hb-footer__cols{grid-template-columns:minmax(0,1fr)}
  .hb-footer__meta{flex-direction:column}
  .hb-btn{width:auto}
}

@keyframes hb-drop{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:none}
}

/* ---------- 动效与无障碍收敛 ---------- */
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  [data-reveal]{opacity:1;transform:none}
  .hb-header__progress-bar{transition:none}
  .hb-card:hover,.hb-btn--flame:hover,.hb-btn--ghost:hover{transform:none}
}