*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);font-size:16px;line-height:1.75;color:var(--dark-gray);background-color:var(--cream);-webkit-font-smoothing:antialiased}
img,svg,video{display:block;max-width:100%}
ul,ol{list-style:none}
a{color:inherit}
button{font:inherit}
:root{
  --kiwi:#8BC34A;
  --kiwi-tone:#7CB342;
  --accent:#FFB02E;
  --terracotta:#C06B3E;
  --rock-gray:#8C8C8C;
  --cream:#F7F2E9;
  --dark-gray:#1E1E1E;
  --dark-green:#3E6B48;
  --text-muted:#5F5F5F;
  --font-head:'Oswald','Noto Sans SC','PingFang SC',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --container:1440px;
  --header-h:84px;
  --shadow-panel:0 8px 24px rgba(30,30,30,.06);
  --shadow-lift:0 14px 32px rgba(30,30,30,.1)
}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
::selection{background:var(--kiwi);color:var(--dark-gray)}
#main-content{scroll-margin-top:calc(var(--header-h) + 8px)}
.skip-link{
  position:absolute;
  left:-999px;
  top:0;
  z-index:200;
  padding:12px 20px;
  background:var(--dark-green);
  color:var(--cream);
  font-weight:700;
  text-decoration:none;
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%)
}
.skip-link:focus{left:16px;top:12px;color:var(--cream)}
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(247,242,233,.94);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(140,140,140,.22)
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:3px;
  background:linear-gradient(90deg,var(--accent) 0 64px,transparent 64px 80px,var(--kiwi) 80px 176px,transparent 176px 192px,var(--terracotta) 192px 240px,transparent 240px);
  opacity:.85;
  pointer-events:none
}
.site-header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  max-width:var(--container);
  height:var(--header-h);
  margin:0 auto;
  padding:0 clamp(20px,4vw,48px)
}
.site-brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  flex-shrink:0
}
.site-brand__logo{
  display:block;
  width:44px;
  height:44px;
  border-radius:16px;
  background:
    radial-gradient(circle at 50% 50%,var(--cream) 0 4px,transparent 5px),
    radial-gradient(circle at 42% 36%,rgba(62,107,72,.75) 0 1.6px,transparent 2.2px),
    radial-gradient(circle at 58% 40%,rgba(62,107,72,.75) 0 1.6px,transparent 2.2px),
    radial-gradient(circle at 46% 58%,rgba(62,107,72,.75) 0 1.6px,transparent 2.2px),
    radial-gradient(circle at 56% 60%,rgba(62,107,72,.75) 0 1.6px,transparent 2.2px),
    radial-gradient(circle at 50% 50%,var(--kiwi) 0 62%,var(--dark-green) 64% 76%,var(--rock-gray) 77% 79%,var(--cream) 81%);
  clip-path:polygon(0 10px,10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  box-shadow:0 3px 0 rgba(255,176,46,.55);
  transition:transform .25s ease
}
.site-brand:hover .site-brand__logo{transform:rotate(-6deg) scale(1.04)}
.site-brand__name{
  font-family:var(--font-head);
  font-weight:900;
  font-size:22px;
  line-height:1;
  letter-spacing:.03em;
  color:var(--dark-gray);
  white-space:nowrap
}
.site-brand__accent{color:var(--kiwi-tone)}
.site-brand--footer .site-brand__name{color:var(--cream)}
.site-brand--footer .site-brand__accent{color:var(--kiwi)}
.site-nav{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:16px
}
.site-nav__list{display:flex;align-items:center;gap:2px}
.site-nav__link{
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--dark-gray);
  text-decoration:none;
  border-radius:6px;
  position:relative;
  transition:color .2s,background-color .2s
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:6px;
  height:2px;
  background:var(--kiwi);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .25s ease
}
.site-nav__link:hover{color:var(--dark-green)}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--dark-green);font-weight:700;background:rgba(139,195,74,.14)}
.site-header__cta{margin-left:8px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 24px;
  font-family:var(--font-head);
  font-size:15px;
  font-weight:700;
  letter-spacing:.06em;
  border:0;
  cursor:pointer;
  text-decoration:none;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease
}
.btn--primary{
  background:var(--kiwi);
  color:var(--dark-gray);
  clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));
  box-shadow:0 4px 0 var(--dark-green)
}
.btn--primary:hover{
  transform:translateY(2px);
  box-shadow:0 2px 0 var(--dark-green);
  background-color:var(--kiwi-tone)
}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:46px;
  height:46px;
  padding:12px;
  background:transparent;
  border:1px solid rgba(140,140,140,.35);
  border-radius:6px;
  cursor:pointer;
  position:relative;
  z-index:30
}
.nav-toggle__bar{display:block;height:2px;background:var(--dark-gray);transform-origin:50% 50%;transition:transform .25s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg);background:var(--dark-green)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg);background:var(--dark-green)}
.nav-toggle__sr{position:absolute;width:1px;height:1px;clip:rect(0 0 0 0);overflow:hidden;white-space:nowrap}
.header-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:3px;
  background:var(--kiwi);
  transform:scaleX(0);
  transform-origin:0 0;
  z-index:2;
  pointer-events:none
}
.back-top{
  position:fixed;
  right:22px;
  bottom:22px;
  width:52px;
  height:52px;
  display:grid;
  place-items:center;
  z-index:90;
  border:0;
  border-radius:50%;
  background:
    radial-gradient(circle at 50% 42%,var(--cream) 0 3px,transparent 4px),
    radial-gradient(circle at 50% 50%,var(--kiwi) 0 60%,var(--dark-green) 62% 76%,var(--cream) 78%);
  box-shadow:0 6px 18px rgba(62,107,72,.32);
  color:var(--dark-gray);
  font-family:var(--font-head);
  font-weight:900;
  font-size:22px;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{transform:translateY(-2px) scale(1.05)}
.site-footer{
  margin-top:96px;
  background:linear-gradient(150deg,rgba(139,195,74,.10),transparent 40%),var(--dark-green);
  color:rgba(247,242,233,.9);
  position:relative
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:5px;
  background:repeating-linear-gradient(135deg,var(--kiwi) 0 14px,var(--accent) 14px 28px,transparent 28px 42px);
  opacity:.9
}
.site-footer__inner{
  max-width:var(--container);
  margin:0 auto;
  padding:72px clamp(20px,4vw,48px) 40px
}
.site-footer__top{
  display:grid;
  grid-template-columns:1.2fr 2fr;
  gap:48px;
  align-items:start
}
.site-footer__brand{display:flex;flex-direction:column;gap:16px}
.site-footer__statement{font-size:15px;color:rgba(247,242,233,.75);max-width:30ch;letter-spacing:.02em}
.site-footer__columns{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.site-footer__title{
  font-family:var(--font-head);
  font-size:14px;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--kiwi);
  text-transform:uppercase;
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px
}
.site-footer__title::before{content:"";width:18px;height:2px;background:var(--accent)}
.site-footer__links{display:flex;flex-direction:column;gap:6px}
.site-footer__link{
  display:inline-flex;
  align-items:center;
  position:relative;
  padding:4px 0 4px 18px;
  color:rgba(247,242,233,.82);
  text-decoration:none;
  font-size:14px;
  transition:color .2s,transform .2s
}
.site-footer__link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:8px;
  height:8px;
  transform:translateY(-50%) rotate(45deg);
  background:var(--kiwi);
  transition:background-color .2s
}
.site-footer__link:hover{color:var(--cream);transform:translateX(4px)}
.site-footer__link:hover::before{background:var(--accent)}
.site-footer__contact{
  display:flex;
  flex-wrap:wrap;
  gap:12px 32px;
  margin-top:48px;
  padding-top:24px;
  border-top:1px solid rgba(247,242,233,.18);
  font-size:14px;
  color:rgba(247,242,233,.7)
}
.site-footer__meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid rgba(247,242,233,.12);
  font-size:13px;
  color:rgba(247,242,233,.6)
}
.site-footer__icp{color:var(--kiwi);text-decoration:none;transition:color .2s}
.site-footer__icp:hover{color:var(--accent)}
.container{max-width:var(--container);margin:0 auto;padding:0 clamp(20px,4vw,48px)}
.section{padding:72px 0 8px}
.section-head{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-bottom:36px;
  max-width:820px
}
.section-head__kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-head);
  font-size:13px;
  font-weight:700;
  letter-spacing:.24em;
  color:var(--dark-green);
  text-transform:uppercase
}
.section-head__kicker::before{content:"";width:28px;height:2px;background:var(--accent)}
.section-head__title{
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(28px,4.4vw,48px);
  line-height:1.12;
  color:var(--dark-gray);
  letter-spacing:.01em
}
.breadcrumb{display:flex;flex-wrap:wrap;gap:6px;padding:30px 0 8px;font-size:13px}
.breadcrumb__item{display:inline-flex;align-items:center;gap:6px;color:var(--text-muted)}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--rock-gray);opacity:.7}
.breadcrumb__link{color:var(--text-muted);text-decoration:none;transition:color .2s}
.breadcrumb__link:hover{color:var(--kiwi-tone)}
.breadcrumb__item[aria-current="page"]{color:var(--dark-gray);font-weight:600}
.bevel-panel{
  background:#fff;
  border:1px solid rgba(140,140,140,.18);
  box-shadow:var(--shadow-panel);
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px));
  padding:24px
}
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.card{
  background:#fff;
  border:1px solid rgba(140,140,140,.16);
  box-shadow:var(--shadow-panel);
  padding:24px;
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px));
  transition:transform .25s ease,box-shadow .25s ease
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}
.card__title{font-family:var(--font-head);font-size:20px;font-weight:700;color:var(--dark-gray);line-height:1.3;margin-bottom:8px}
.card__meta{font-size:13px;color:var(--text-muted);letter-spacing:.04em}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px 5px 10px;
  font-family:var(--font-head);
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--dark-gray);
  background:var(--kiwi);
  clip-path:polygon(0 0,calc(100% - 8px) 0,100% 8px,100% 100%,0 100%);
  text-transform:uppercase
}
.tag--accent{background:var(--accent);color:var(--dark-gray)}
.tag--terracotta{background:var(--terracotta);color:var(--dark-gray)}
.data-num{
  position:relative;
  padding-left:16px;
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(28px,3vw,40px);
  line-height:1;
  color:var(--dark-green);
  font-variant-numeric:tabular-nums
}
.data-num::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  width:6px;
  height:70%;
  background:var(--accent);
  clip-path:polygon(0 0,100% 0,100% 100%,0 100%)
}
.img-frame{
  position:relative;
  display:grid;
  place-items:center;
  overflow:hidden;
  aspect-ratio:16 / 10;
  background:linear-gradient(135deg,rgba(139,195,74,.16),rgba(255,176,46,.08) 55%,rgba(140,140,140,.08));
  border:1px dashed rgba(140,140,140,.45);
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,14px 100%,0 calc(100% - 14px))
}
.img-frame::after{
  content:"IMG";
  font-family:var(--font-head);
  font-weight:700;
  letter-spacing:.3em;
  font-size:14px;
  color:rgba(30,30,30,.28)
}
.img-frame img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover
}
.deco-stripe{
  height:12px;
  background:repeating-linear-gradient(135deg,var(--kiwi) 0 12px,var(--accent) 12px 24px,transparent 24px 40px);
  opacity:.5
}
.index-list{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:1px;
  background:rgba(140,140,140,.32);
  border:1px solid rgba(140,140,140,.32)
}
.index-list__item{background:var(--cream);padding:20px;min-height:120px}
.chapter-rail{
  position:fixed;
  right:18px;
  top:50%;
  transform:translateY(-50%);
  z-index:80;
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:10px 8px;
  background:rgba(247,242,233,.92);
  border:1px solid rgba(140,140,140,.22);
  box-shadow:var(--shadow-panel);
  clip-path:polygon(0 0,calc(100% - 10px) 0,100% 10px,100% 100%,0 100%)
}
.chapter-rail__item{
  display:block;
  width:100%;
  padding:8px 12px;
  border:0;
  border-left:3px solid transparent;
  background:transparent;
  font-family:var(--font-head);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  text-align:left;
  color:var(--text-muted);
  cursor:pointer;
  transition:color .2s,background-color .2s,border-color .2s
}
.chapter-rail__item:hover{color:var(--dark-green);background:rgba(139,195,74,.08)}
.chapter-rail__item.is-active{color:var(--dark-green);border-left-color:var(--kiwi);background:rgba(139,195,74,.14)}
@media (max-width:1100px){
  .site-nav__list{gap:0}
  .site-nav__link{padding:10px 10px;font-size:14px}
  .site-header__cta{padding:10px 18px}
}
@media (max-width:960px){
  :root{--header-h:68px}
  .nav-toggle{display:inline-flex}
  .site-header__inner{gap:12px}
  .site-nav{
    position:fixed;
    top:var(--header-h);
    right:0;
    bottom:0;
    width:min(340px,86vw);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:28px 22px 36px;
    background:rgba(247,242,233,.98);
    border-left:1px solid rgba(140,140,140,.24);
    box-shadow:-14px 0 34px rgba(30,30,30,.14);
    transform:translateX(104%);
    visibility:hidden;
    transition:transform .3s ease,visibility .3s ease;
    overflow-y:auto
  }
  .site-nav[data-open]{transform:translateX(0);visibility:visible}
  .site-nav__list{flex-direction:column;align-items:stretch;width:100%;gap:4px}
  .site-nav__item{width:100%}
  .site-nav__link{display:block;padding:14px 16px;font-size:17px}
  .site-nav__link::after{left:16px;right:auto;width:28px}
  .site-header__cta{margin:24px 0 0;width:100%}
  .chapter-rail{display:none}
  .site-footer__top{grid-template-columns:1fr;gap:32px}
  .site-footer{margin-top:64px}
}
@media (max-width:560px){
  .site-brand__name{font-size:19px}
  .site-brand__logo{width:38px;height:38px;border-radius:12px}
  .site-footer__inner{padding-top:48px}
  .site-footer__columns{grid-template-columns:1fr;gap:28px}
  .back-top{right:14px;bottom:14px;width:46px;height:46px;font-size:19px}
  .section{padding-top:48px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .site-nav{transition:none}
  .back-top{transition:none}
}