:root{
  --k-green:#6BE01A;
  --k-green-deep:#1E7A2E;
  --k-green-soft:#C8FF6B;
  --k-orange:#FF6A13;
  --k-orange-soft:#FFE0C7;
  --k-night:#0B1B3A;
  --k-blue:#1B3B7A;
  --k-paper:#F7F8F5;
  --k-ink:#12161C;
  --k-grey:#6C7480;
  --k-hair:rgba(18,22,28,.12);
  --k-hair-dark:rgba(237,241,247,.18);
  --k-shell:1220px;
  --k-notch:18px;
  --k-header-h:76px;
  --k-font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --k-mono:"JetBrains Mono","Source Han Mono SC",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --k-ease:cubic-bezier(.22,.68,.24,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{
  margin:0;padding:0;
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--k-header-h) + 22px);
}
body{
  margin:0;
  font-family:var(--k-font);
  font-size:16px;
  line-height:1.8;
  color:var(--k-ink);
  background-color:var(--k-paper);
  background-image:
    linear-gradient(rgba(18,22,28,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(18,22,28,.035) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;height:auto;}
a{color:inherit;}
button{font:inherit;color:inherit;}
:focus-visible{outline:3px solid var(--k-orange);outline-offset:3px;}
#main-content{display:block;padding-top:calc(var(--k-header-h) + 6px);}

/* ---------- 通用排版 ---------- */
.mono-label{
  font-family:var(--k-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--k-grey);
}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}
.shell{
  width:100%;
  max-width:var(--k-shell);
  margin:0 auto;
  padding:0 clamp(16px,3vw,30px);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--k-font);font-weight:700;font-size:15px;line-height:1;
  padding:13px 22px;
  border:1px solid transparent;
  border-radius:2px 16px 2px 16px;
  text-decoration:none;cursor:pointer;
  transition:transform .22s var(--k-ease),background .22s var(--k-ease),color .22s var(--k-ease),border-color .22s var(--k-ease);
}
.btn--primary{background:var(--k-green);color:var(--k-night);border-color:var(--k-green);}
.btn--primary:hover{background:var(--k-green-soft);border-color:var(--k-green-soft);transform:translateY(-2px);}
.btn--ghost{background:transparent;color:var(--k-ink);border-color:rgba(18,22,28,.24);}
.btn--ghost:hover{background:var(--k-ink);color:#fff;border-color:var(--k-ink);transform:translateY(-2px);}
.btn--dark{background:var(--k-night);color:#fff;border-color:var(--k-night);}
.btn--dark:hover{background:var(--k-blue);border-color:var(--k-blue);transform:translateY(-2px);}
.btn--sm{padding:9px 15px;font-size:13px;border-radius:2px 12px 2px 12px;}
.btn--block{width:100%;}

/* ---------- 徽标 / 品牌标记 ---------- */
.brand-mark{
  display:flex;align-items:center;gap:10px;
  flex:0 0 auto;text-decoration:none;color:var(--k-ink);
}
.brand-mark__glyph{
  position:relative;flex:0 0 auto;
  width:34px;height:34px;
  background:var(--k-green);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand-mark__glyph i{
  position:absolute;left:8px;
  display:block;width:18px;height:3px;border-radius:1px;
  background:var(--k-night);
}
.brand-mark__glyph i:first-child{top:12px;transform:rotate(-34deg);}
.brand-mark__glyph i:last-child{top:20px;transform:rotate(-34deg);}
.brand-mark__text{display:flex;flex-direction:column;line-height:1.15;}
.brand-mark__text strong{font-size:15px;font-weight:800;letter-spacing:.02em;}
.brand-mark__text em{
  font-family:var(--k-mono);font-style:normal;font-size:10px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--k-grey);
}
.brand-mark--footer .brand-mark__text strong{color:#fff;}
.brand-mark--footer .brand-mark__text em{color:rgba(237,241,247,.6);}

/* ---------- 页头 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  padding:14px clamp(12px,2.6vw,30px);
  pointer-events:none;
}
.header-rail{max-width:var(--k-shell);margin:0 auto;pointer-events:none;}
.header-island{
  position:relative;pointer-events:auto;
  display:flex;align-items:center;gap:clamp(10px,1.4vw,20px);
  padding:8px 8px 8px 16px;
  background:rgba(247,248,245,.92);
  border:1px solid var(--k-hair);
  border-radius:2px 22px 2px 22px;
  box-shadow:0 16px 38px -26px rgba(11,27,58,.6);
  backdrop-filter:blur(12px);
  transition:padding .3s var(--k-ease),background .3s var(--k-ease);
}
.site-header[data-condensed] .header-island{padding:5px 6px 5px 14px;}
.site-header[data-condensed] .season-chip{display:none;}

.skip-link{
  position:absolute;left:16px;top:-120px;z-index:200;
  background:var(--k-ink);color:#fff;text-decoration:none;
  padding:10px 18px;font-size:14px;font-weight:700;
  border-radius:2px 14px 2px 14px;
  transition:top .2s var(--k-ease);
}
.skip-link:focus{top:12px;}

.nav-capsule{margin-left:auto;min-width:0;}
.nav-capsule__list{display:flex;align-items:center;gap:2px;}
.nav-capsule__link{
  display:block;padding:9px 13px;
  border-radius:2px 12px 2px 12px;
  font-size:14px;font-weight:600;color:var(--k-ink);
  text-decoration:none;white-space:nowrap;
  transition:background .2s var(--k-ease),color .2s var(--k-ease);
}
.nav-capsule__link:hover{background:var(--k-green-soft);}
.nav-capsule__link[aria-current="page"]{
  background:var(--k-night);color:#fff;
  box-shadow:inset 3px 0 0 var(--k-orange);
}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:6px;}
.season-chip{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--k-mono);font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--k-blue);
  background:rgba(27,59,122,.09);
  padding:6px 11px;border-radius:2px 10px 2px 10px;
  white-space:nowrap;
}
.season-chip__dot{
  width:7px;height:7px;border-radius:50%;background:var(--k-orange);
  box-shadow:0 0 0 3px rgba(255,106,19,.22);
}

.nav-toggle{
  display:none;width:44px;height:44px;padding:0;
  place-items:center;cursor:pointer;
  background:transparent;border:1px solid rgba(18,22,28,.2);
  border-radius:2px 14px 2px 14px;
}
.nav-toggle__bars{position:relative;display:block;width:18px;height:12px;}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;
  background:var(--k-ink);border-radius:1px;
  transition:transform .25s var(--k-ease);
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{bottom:0;}
.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);}

/* 移动端底部快捷栏 */
.quick-dock{display:none;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(56px,8vw,110px);
  background:var(--k-night);
  color:#EDF1F7;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:6px;
  background:linear-gradient(90deg,var(--k-green) 0 38%,var(--k-orange) 38% 62%,var(--k-blue) 62% 100%);
}
.footer-track{
  position:absolute;top:26px;right:-70px;
  width:360px;height:200px;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(107,224,26,.32) 0 2px,transparent 2px 13px);
  transform:skewX(-12deg);opacity:.55;
}
.footer-inner{
  position:relative;z-index:1;
  max-width:var(--k-shell);margin:0 auto;
  padding:clamp(42px,6vw,76px) clamp(16px,3vw,30px) 26px;
}
.footer-lead{
  display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;
  gap:20px;padding-bottom:26px;border-bottom:1px solid var(--k-hair-dark);
}
.footer-lead__note{
  font-family:var(--k-mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:rgba(237,241,247,.62);
}
.footer-columns{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
  padding:34px 0;border-bottom:1px solid var(--k-hair-dark);
}
.footer-col__title{
  font-family:var(--k-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--k-green);margin-bottom:14px;
}
.footer-col__list{display:grid;gap:9px;}
.footer-col__list li{font-size:15px;color:rgba(237,241,247,.78);}
.footer-col__link{
  color:rgba(237,241,247,.78);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--k-ease),border-color .2s var(--k-ease);
}
.footer-col__link:hover{color:var(--k-green);border-bottom-color:var(--k-green);}
.footer-contact{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:18px 28px;padding:26px 0;border-bottom:1px solid var(--k-hair-dark);
}
.footer-contact__item{display:flex;flex-direction:column;gap:4px;}
.footer-contact__key{
  font-family:var(--k-mono);font-size:10px;letter-spacing:.18em;
  text-transform:uppercase;color:rgba(237,241,247,.5);
}
.footer-contact__val{font-size:15px;color:#fff;word-break:break-word;}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 22px;padding-top:22px;
  font-family:var(--k-mono);font-size:12px;color:rgba(237,241,247,.6);
}
.footer-base__link{color:rgba(237,241,247,.6);text-decoration:none;}
.footer-base__link:hover{color:var(--k-green);}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin-bottom:18px;
  font-family:var(--k-mono);font-size:12px;letter-spacing:.06em;color:var(--k-grey);
}
.breadcrumbs__item{display:flex;align-items:center;gap:8px;}
.breadcrumbs__item:not(:last-child)::after{content:"/";color:rgba(18,22,28,.28);}
.breadcrumbs a{color:var(--k-grey);text-decoration:none;}
.breadcrumbs a:hover{color:var(--k-green-deep);}
.breadcrumbs [aria-current="page"]{color:var(--k-ink);}

/* ---------- 章节索引 ---------- */
.doc-index{
  display:grid;gap:1px;
  background:var(--k-hair);
  border:1px solid var(--k-hair);
  border-radius:2px 18px 2px 18px;
  overflow:hidden;
}
.doc-index__item{background:var(--k-paper);}
.doc-index__link{
  display:flex;align-items:baseline;gap:14px;
  padding:14px 16px;text-decoration:none;color:var(--k-ink);
  transition:background .2s var(--k-ease),padding-left .2s var(--k-ease),color .2s var(--k-ease);
}
.doc-index__link:hover{background:var(--k-green-soft);padding-left:22px;}
.doc-index__num{font-family:var(--k-mono);font-size:12px;letter-spacing:.08em;color:var(--k-orange);}
.doc-index__label{font-weight:700;font-size:16px;}
.doc-index__link[aria-current="true"]{background:var(--k-night);color:#fff;}
.doc-index__link[aria-current="true"] .doc-index__num{color:var(--k-green);}

/* ---------- 章节标题组 ---------- */
.section-head{
  position:relative;
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px 18px;
  margin-bottom:26px;padding-bottom:14px;
  border-bottom:2px solid var(--k-ink);
}
.section-head::after{
  content:"";position:absolute;left:0;bottom:-2px;width:88px;height:2px;background:var(--k-green);
}
.section-head__index{
  font-family:var(--k-mono);font-size:12px;letter-spacing:.16em;
  color:var(--k-orange);
}
.section-head__title{
  font-size:clamp(24px,3.3vw,38px);font-weight:800;line-height:1.12;
  letter-spacing:-.01em;
}
.section-head__note{
  flex:1 1 220px;font-size:14px;color:var(--k-grey);line-height:1.7;
}

/* ---------- 编辑部栅格 ---------- */
.editorial-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,3fr);
  gap:clamp(24px,4vw,60px);
  align-items:start;
}
.rail{display:grid;gap:20px;align-content:start;}
.rail__block{border-left:3px solid var(--k-green);padding-left:16px;}
.rail__title{
  font-family:var(--k-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--k-grey);margin-bottom:8px;
}

/* ---------- 卡片 ---------- */
.card{
  display:flex;flex-direction:column;gap:10px;
  padding:22px;
  background:#fff;
  border:1px solid var(--k-hair);
  border-radius:2px 20px 2px 20px;
  transition:transform .25s var(--k-ease),box-shadow .25s var(--k-ease);
}
.card:hover{transform:translateY(-4px);box-shadow:0 28px 46px -32px rgba(11,27,58,.6);}
.card__label{
  font-family:var(--k-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--k-orange);
}
.card__title{font-size:20px;font-weight:800;line-height:1.32;}
.card__meta{font-size:14px;color:var(--k-grey);line-height:1.7;}
.card--dark{background:var(--k-night);border-color:rgba(255,255,255,.14);color:#EEF2F8;}
.card--dark .card__label{color:var(--k-green);}
.card--dark .card__meta{color:rgba(238,242,248,.66);}
.card--accent{background:var(--k-green);border-color:var(--k-green);color:var(--k-night);}
.card--accent .card__label{color:var(--k-night);}
.card--accent .card__meta{color:rgba(18,22,28,.72);}

/* ---------- 标签 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-family:var(--k-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  background:var(--k-green-soft);color:var(--k-green-deep);
}
.chip--orange{background:var(--k-orange-soft);color:#A63A00;}
.chip--dark{background:var(--k-night);color:var(--k-green);}

/* ---------- 旁注块 ---------- */
.note-block{
  background:var(--k-orange-soft);
  border-radius:2px 18px 2px 18px;
  padding:18px 20px;font-size:15px;line-height:1.75;color:#5A2600;
}
.note-block__title{
  font-family:var(--k-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:#A63A00;margin-bottom:8px;
}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;display:block;margin:0;overflow:hidden;
  aspect-ratio:var(--frame-ratio,16 / 9);
  border-radius:2px 20px 2px 20px;
  background-color:#0E1E3F;
  background-image:linear-gradient(135deg,rgba(107,224,26,.24),rgba(27,59,122,.72) 58%,rgba(11,27,58,.95));
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--k-notch)),calc(100% - var(--k-notch)) 100%,0 100%);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(107,224,26,.18) 0 1px,transparent 1px 11px);
}
.media-frame__img{
  position:relative;z-index:1;
  width:100%;height:100%;object-fit:cover;
}
.media-frame__cap{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:26px 18px 14px;
  background:linear-gradient(transparent,rgba(11,27,58,.86));
  color:#fff;font-size:13px;line-height:1.6;
}

/* ---------- 正文 ---------- */
.prose{max-width:68ch;}
.prose h2{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.2;margin:1.6em 0 .55em;}
.prose h3{font-size:20px;font-weight:800;line-height:1.35;margin:1.4em 0 .45em;}
.prose p{margin-bottom:1.05em;}
.prose ul,.prose ol{margin-bottom:1.15em;padding-left:1.3em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.45em;}
.prose a{color:var(--k-green-deep);text-decoration:underline;text-underline-offset:3px;}
.prose a:hover{color:var(--k-orange);}
.prose strong{font-weight:800;}

/* ---------- 分区色带 ---------- */
.section-band{
  position:relative;
  padding:clamp(46px,6vw,92px) 0;
  margin:clamp(38px,6vw,78px) 0;
}
.section-band--night{background:var(--k-night);color:#EEF2F8;}
.section-band--green{background:var(--k-green);color:var(--k-night);}
.section-band--paper{background:#fff;border-top:1px solid var(--k-hair);border-bottom:1px solid var(--k-hair);}

/* ---------- 数据列表 ---------- */
.data-list{display:grid;gap:1px;background:var(--k-hair);border:1px solid var(--k-hair);}
.data-list__row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:12px 16px;background:#fff;
}
.data-list__key{font-size:14px;color:var(--k-grey);}
.data-list__val{font-family:var(--k-mono);font-size:15px;font-weight:600;}
.data-list__val--up{color:var(--k-green-deep);}
.data-list__val--hot{color:var(--k-orange);}

/* ---------- 延伸链接 ---------- */
.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;color:var(--k-ink);text-decoration:none;
  border-bottom:2px solid var(--k-green);padding-bottom:2px;
  transition:gap .2s var(--k-ease),color .2s var(--k-ease);
}
.link-more::after{content:"→";}
.link-more:hover{gap:14px;color:var(--k-green-deep);}

.divider-slash{
  height:clamp(24px,3.4vw,50px);
  background-image:repeating-linear-gradient(115deg,var(--k-green) 0 3px,transparent 3px 15px);
  opacity:.5;
}

/* ---------- 阅读进度 ---------- */
.reading-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:120;
  pointer-events:none;background:transparent;
}
.reading-progress__bar{
  display:block;width:100%;height:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--k-green),var(--k-orange));
}

/* ---------- 显现 ---------- */
[data-reveal]{
  opacity:0;transform:translate3d(0,18px,0);
  transition:opacity .42s var(--k-ease),transform .42s var(--k-ease);
}
[data-reveal].is-in{opacity:1;transform:none;}

/* ---------- 平板 ---------- */
@media (max-width:960px){
  :root{--k-header-h:66px;}
  .editorial-grid{grid-template-columns:minmax(0,1fr);}
  .footer-columns{grid-template-columns:repeat(2,minmax(0,1fr));}

  .site-header{padding:10px 12px;}
  .header-island{padding:7px 8px 7px 12px;gap:10px;}
  .header-actions{margin-left:auto;}
  .nav-toggle{display:grid;}

  .nav-capsule{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    display:none;margin-left:0;
    padding:14px;
    background:var(--k-night);
    border-radius:2px 22px 2px 22px;
    box-shadow:0 30px 56px -30px rgba(11,27,58,.8);
    max-height:min(70vh,520px);overflow-y:auto;
  }
  .nav-capsule[data-open]{display:block;}
  .nav-capsule__list{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-capsule__link{
    padding:12px 14px;font-size:16px;color:#fff;
    border-radius:2px 12px 2px 12px;
    border-left:3px solid transparent;
  }
  .nav-capsule__link:hover{background:rgba(107,224,26,.16);border-left-color:var(--k-green-soft);}
  .nav-capsule__link[aria-current="page"]{
    background:var(--k-green);color:var(--k-night);
    box-shadow:none;border-left-color:var(--k-orange);
  }
}

/* ---------- 手机 ---------- */
@media (max-width:760px){
  body{padding-bottom:calc(66px + env(safe-area-inset-bottom));}
  .quick-dock{
    display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
    position:fixed;left:0;right:0;bottom:0;z-index:95;
    padding:6px 6px calc(6px + env(safe-area-inset-bottom));
    background:rgba(11,27,58,.97);
    border-top:1px solid rgba(107,224,26,.32);
    backdrop-filter:blur(10px);
  }
  .quick-dock__item{
    display:flex;flex-direction:column;align-items:center;gap:2px;
    padding:7px 4px;text-decoration:none;
    font-size:12px;font-weight:600;color:rgba(237,241,247,.82);
    border-radius:2px 12px 2px 12px;
    transition:background .2s var(--k-ease),color .2s var(--k-ease);
  }
  .quick-dock__num{
    font-family:var(--k-mono);font-size:10px;letter-spacing:.1em;color:var(--k-green);
  }
  .quick-dock__item:hover,
  .quick-dock__item:focus-visible{background:rgba(107,224,26,.14);color:#fff;}
  .section-head__note{flex-basis:100%;}
}

@media (max-width:560px){
  .season-chip{display:none;}
  .footer-columns{grid-template-columns:minmax(0,1fr);}
  .footer-base{flex-direction:column;align-items:flex-start;}
  .doc-index__link{padding:12px 14px;}
  .card{padding:18px;}
}

/* ---------- 降低动态 ---------- */
@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;
  }
  [data-reveal]{opacity:1;transform:none;}
}