/* ============ 0. reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0}
img,svg{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
a{color:inherit}

/* ============ 1. tokens ============ */
:root{
  --ink:#16201A;
  --deep:#102A1E;
  --green:#2F7D4E;
  --moss:#6E8F5A;
  --leaf:#CFE3C4;
  --mist:#F4F1E8;
  --dew:#E7EDE2;
  --paper:#FBFAF4;
  --gold:#D8A63A;
  --clay:#C96B3F;
  --bronze:#7A5A1E;

  --font-head:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --fs-body:clamp(16px,0.55vw + 14px,17.5px);

  --rail:236px;
  --gutter:clamp(18px,4vw,48px);
  --gap:clamp(22px,3vw,40px);
  --header-h:72px;

  --line:rgba(16,42,30,.14);
  --line-soft:rgba(16,42,30,.08);
  --line-dark:rgba(207,227,196,.18);
  --ease:cubic-bezier(.22,.72,.2,1);
  --shadow:0 1px 0 rgba(16,42,30,.04),0 18px 40px -32px rgba(16,42,30,.55);
}

/* ============ 2. 中文排版与页面底 ============ */
body{
  font-family:var(--font-body);
  font-size:var(--fs-body);
  line-height:1.75;
  color:var(--ink);
  background-color:var(--mist);
  background-image:
    radial-gradient(1200px 700px at 84% -14%,rgba(47,125,78,.10),transparent 62%),
    repeating-linear-gradient(90deg,rgba(16,42,30,.045) 0 1px,transparent 1px 96px);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-head);font-weight:400;line-height:1.14;letter-spacing:.01em;color:var(--deep)}
h1{font-size:clamp(2.6rem,6vw,5.4rem);font-weight:300;line-height:1.04;letter-spacing:.005em}
h2{font-size:clamp(2rem,4vw,3.4rem)}
h3{font-size:clamp(1.25rem,2vw,1.75rem);font-weight:600;line-height:1.3}
h4{font-size:clamp(1.05rem,1.4vw,1.2rem);font-weight:600}
p{text-wrap:pretty}
strong,b{font-weight:700;color:var(--deep)}
::selection{background:rgba(216,166,58,.38);color:var(--ink)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:1px}
#main-content:focus{outline:none}

/* ============ 3. 骨架 ============ */
.gx-shell{
  display:grid;
  grid-template-columns:var(--rail) minmax(0,1fr);
  gap:var(--gap);
  width:100%;
  max-width:1560px;
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.gx-rail{
  align-self:start;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--moss);
}
.gx-main{min-width:0;padding-block:clamp(20px,3.5vw,44px) 0}
.gx-section{padding-block:clamp(28px,5vw,64px)}
.gx-prose{max-width:68ch}
.gx-prose p + p{margin-top:1em}
.gx-prose h2,.gx-prose h3{margin-top:1.5em;margin-bottom:.5em}
.gx-prose ul,.gx-prose ol{margin-block:1em;padding-left:1.1em;list-style:disc}
.gx-prose ol{list-style:decimal}
.gx-prose li + li{margin-top:.4em}
.gx-prose a{color:var(--green);text-decoration:underline;text-decoration-color:rgba(47,125,78,.35);text-underline-offset:3px}
.gx-prose a:hover{text-decoration-color:var(--gold)}
@media (min-width:1025px){
  .gx-rail{position:sticky;top:calc(var(--header-h) + 24px)}
}
@media (max-width:1024px){
  .gx-shell{grid-template-columns:minmax(0,1fr)}
}

/* ============ 4. 索引文字与标签 ============ */
.gx-eyebrow{font-size:12px;letter-spacing:.24em;color:var(--bronze);margin:0}
.gx-meta{font-size:12px;letter-spacing:.14em;color:var(--moss)}
.gx-rule{height:1px;border:0;margin-block:clamp(20px,3vw,32px);background:linear-gradient(90deg,var(--line),transparent)}
.gx-tag{
  display:inline-block;font-size:11px;letter-spacing:.12em;line-height:1.6;
  padding:2px 9px;border-radius:2px;
  background:var(--dew);color:#2b4632;border:1px solid rgba(110,143,90,.35);
}
.gx-tag--gold{background:rgba(216,166,58,.16);border-color:rgba(216,166,58,.45);color:var(--bronze)}

/* ============ 5. 按钮 ============ */
.gx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:.72em 1.15em;border:1px solid transparent;border-radius:2px;
  font-family:var(--font-body);font-size:.95rem;font-weight:600;line-height:1.2;
  letter-spacing:.02em;text-decoration:none;cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease);
}
.gx-btn--sm{padding:.58em .95em;font-size:.85rem}
.gx-btn--primary{background:var(--green);color:#F6F3E8}
.gx-btn--primary:hover{background:#276a41}
.gx-btn--gold{background:var(--gold);color:#1B2412}
.gx-btn--gold:hover{background:#e3b455}
.gx-btn--ghost{background:transparent;color:var(--leaf);border-color:rgba(207,227,196,.38)}
.gx-btn--ghost:hover{border-color:var(--gold);color:var(--gold)}
.gx-btn--quiet{background:transparent;color:var(--green);border-color:rgba(47,125,78,.4)}
.gx-btn--quiet:hover{background:rgba(47,125,78,.08);border-color:var(--green)}

/* ============ 6. 页头 ============ */
.gx-skip{
  position:absolute;top:8px;left:8px;z-index:120;
  padding:.6em 1em;border-radius:2px;
  background:var(--gold);color:#1B2412;font-size:.85rem;font-weight:700;text-decoration:none;
  transform:translateY(-160%);
  transition:transform .2s var(--ease);
}
.gx-skip:focus-visible{transform:translateY(0)}

.gx-header{
  position:sticky;top:0;z-index:60;
  background-color:#102A1E;
  background-image:
    radial-gradient(680px 140px at 10% -50%,rgba(47,125,78,.55),transparent 72%),
    radial-gradient(520px 120px at 92% -60%,rgba(216,166,58,.16),transparent 70%),
    linear-gradient(180deg,#102A1E,#0E2419);
  color:var(--leaf);
  box-shadow:0 1px 0 rgba(207,227,196,.14);
}
.gx-header__bar{
  display:flex;align-items:center;gap:clamp(14px,2vw,28px);
  min-height:var(--header-h);
  width:100%;max-width:1560px;margin-inline:auto;
  padding:10px var(--gutter);
}
.gx-header__rail{
  display:flex;align-items:center;
  flex:0 0 auto;
  padding-right:clamp(14px,2vw,26px);
  border-right:1px solid var(--line-dark);
}
.gx-brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none}
.gx-brand__mark{
  position:relative;flex:none;width:34px;height:34px;border-radius:50%;
  border:1px solid rgba(216,166,58,.55);
  background:radial-gradient(circle at 32% 28%,rgba(207,227,196,.34),transparent 62%);
}
.gx-brand__mark::before{
  content:"";position:absolute;inset:6px;border-radius:50%;
  border:1px solid rgba(207,227,196,.35);
}
.gx-brand__mark::after{
  content:"";position:absolute;top:50%;left:50%;width:1px;height:22px;
  background:linear-gradient(180deg,transparent,var(--gold),transparent);
  transform:translate(-50%,-50%) rotate(38deg);
}
.gx-brand__text{display:grid;gap:2px}
.gx-brand__name{
  font-family:var(--font-head);font-weight:400;
  font-size:1.05rem;letter-spacing:.1em;color:#F1EEE2;line-height:1.2;
}
.gx-brand__sub{
  font-size:10.5px;letter-spacing:.18em;color:rgba(207,227,196,.6);line-height:1.4;
}

.gx-navtoggle{gap:9px}

/* 导航 */
.gx-nav{
  display:flex;align-items:center;gap:clamp(14px,2.2vw,30px);
  margin-left:auto;
}
.gx-nav__list{display:flex;align-items:center;gap:clamp(8px,1.5vw,22px)}
.gx-nav__item{flex:none}
.gx-nav__link{
  position:relative;display:grid;gap:1px;
  padding:6px 2px 8px;
  text-decoration:none;color:rgba(207,227,196,.82);
  transition:color .2s var(--ease);
}
.gx-nav__idx{
  font-size:10px;letter-spacing:.18em;line-height:1.2;
  color:rgba(207,227,196,.48);
  transition:color .2s var(--ease);
}
.gx-nav__label{font-size:14px;letter-spacing:.06em;line-height:1.3}
.gx-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left center;
  transition:transform .24s var(--ease);
}
.gx-nav__link:hover,.gx-nav__link:focus-visible{color:#F6F1E2}
.gx-nav__link:hover .gx-nav__idx,.gx-nav__link:focus-visible .gx-nav__idx{color:var(--gold)}
.gx-nav__link:hover::after,.gx-nav__link:focus-visible::after{transform:scaleX(1)}
.gx-nav__link[aria-current="page"]{color:#FBF7EA}
.gx-nav__link[aria-current="page"] .gx-nav__idx{color:var(--gold)}
.gx-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.gx-nav__actions{display:flex;align-items:center;gap:10px}

/* 滚动进度 */
.gx-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;
  background:rgba(207,227,196,.10);
  overflow:hidden;
}
.gx-progress__bar{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--green),rgba(216,166,58,.95));
  transform:scaleX(0);transform-origin:left center;
  transition:transform .18s linear;
}

/* 移动抽屉 */
@media (min-width:1081px){
  .gx-navtoggle{display:none}
}
@media (max-width:1080px){
  :root{--header-h:64px}
  html{scroll-padding-top:84px}
  .gx-header{position:sticky}
  .gx-navtoggle{
    display:inline-flex;align-items:center;
    margin-left:auto;padding:8px 12px;
    border:1px solid rgba(207,227,196,.32);border-radius:2px;
    background:transparent;color:var(--leaf);
    font-size:12px;letter-spacing:.14em;cursor:pointer;
    transition:border-color .2s var(--ease),color .2s var(--ease);
  }
  .gx-navtoggle:hover{border-color:var(--gold);color:var(--gold)}
  .gx-navtoggle__bars{display:grid;gap:4px;width:16px}
  .gx-navtoggle__bars span{
    display:block;height:1px;width:100%;background:currentColor;
    transition:transform .22s var(--ease),opacity .22s var(--ease);
  }
  .gx-navtoggle__label{line-height:1}
  .gx-header[data-open="true"] .gx-navtoggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
  .gx-header[data-open="true"] .gx-navtoggle__bars span:nth-child(2){opacity:0}
  .gx-header[data-open="true"] .gx-navtoggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

  .gx-nav{
    position:absolute;top:100%;left:0;right:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    margin-left:0;
    padding:8px var(--gutter) 22px;
    background-color:var(--deep);
    background-image:linear-gradient(180deg,rgba(47,125,78,.28),transparent 60%);
    border-top:1px solid var(--line-dark);
    border-bottom:1px solid rgba(216,166,58,.42);
    box-shadow:0 28px 44px -32px rgba(0,0,0,.85);
    max-height:calc(100vh - var(--header-h) - 16px);
    max-height:calc(100dvh - var(--header-h) - 16px);
    overflow-y:auto;
    overscroll-behavior:contain;
  }
  .gx-header[data-open="true"] .gx-nav{display:flex;animation:gx-drawer .22s var(--ease) both}
  .gx-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .gx-nav__item + .gx-nav__item{border-top:1px solid rgba(207,227,196,.12)}
  .gx-nav__link{
    grid-template-columns:auto 1fr;align-items:baseline;gap:14px;
    padding:13px 2px;
  }
  .gx-nav__label{font-size:16px}
  .gx-nav__link::after{display:none}
  .gx-nav__actions{
    flex-direction:column;align-items:stretch;gap:10px;margin-top:18px;
  }
  .gx-nav__actions .gx-btn{justify-content:center;padding:.85em 1.1em}
}
@keyframes gx-drawer{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ============ 7. 页脚 ============ */
.gx-footer{
  margin-top:clamp(48px,8vw,96px);
  color:rgba(231,237,226,.86);
  background-color:#102A1E;
  background-image:
    radial-gradient(900px 420px at 10% 0%,rgba(47,125,78,.34),transparent 66%),
    radial-gradient(700px 360px at 88% 8%,rgba(216,166,58,.10),transparent 70%),
    linear-gradient(180deg,#102A1E,#0B1D14);
}
.gx-footer__path{
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(216,166,58,.6),rgba(207,227,196,.28),transparent);
}
.gx-footer__legend{
  display:flex;flex-wrap:wrap;gap:8px 26px;
  width:100%;max-width:1560px;margin-inline:auto;
  padding:14px var(--gutter);
  border-bottom:1px solid var(--line-dark);
  font-size:12px;letter-spacing:.1em;color:rgba(207,227,196,.72);
}
.gx-legend{display:inline-flex;align-items:center;gap:8px}
.gx-legend__dot{
  width:7px;height:7px;flex:none;border-radius:50%;
  background:var(--green);box-shadow:0 0 0 3px rgba(47,125,78,.22);
}
.gx-legend__dot--gold{background:var(--gold);box-shadow:0 0 0 3px rgba(216,166,58,.2)}
.gx-legend__dot--clay{background:var(--clay);box-shadow:0 0 0 3px rgba(201,107,63,.2)}

.gx-footer__inner{
  display:grid;
  grid-template-columns:minmax(220px,1fr) minmax(280px,1.25fr) minmax(260px,1fr);
  gap:clamp(26px,4vw,56px);
  width:100%;max-width:1560px;margin-inline:auto;
  padding:clamp(30px,5vw,56px) var(--gutter);
}
.gx-footer__brand{display:grid;gap:16px;align-content:start}
.gx-brand--footer .gx-brand__name{font-size:1.2rem}
.gx-brand--footer .gx-brand__mark{width:40px;height:40px}
.gx-footer__note{
  font-size:13px;line-height:1.72;color:rgba(207,227,196,.68);max-width:34ch;
}
.gx-footer__cols{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.gx-footer__col{min-width:0}
.gx-footer__coltitle{
  font-size:12px;font-family:var(--font-body);font-weight:700;
  letter-spacing:.22em;color:var(--gold);margin-bottom:12px;
}
.gx-footer__links{display:grid;gap:9px;font-size:14px}
.gx-footer__links a{
  color:rgba(231,237,226,.84);text-decoration:none;
  transition:color .18s var(--ease);
}
.gx-footer__links a:hover,.gx-footer__links a:focus-visible{
  color:#FBF7EA;text-decoration:underline;
  text-decoration-color:rgba(216,166,58,.7);text-underline-offset:4px;
}
.gx-footer__contact{display:grid;gap:14px;align-content:start}
.gx-footer__links--contact{gap:12px}
.gx-footer__links--contact li{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;
}
.gx-footer__label{
  font-size:11px;letter-spacing:.16em;color:rgba(207,227,196,.55);
  min-width:34px;flex:none;
}
.gx-footer__value{font-size:14px;color:#F1EEE2;word-break:break-all}
.gx-copy{
  padding:2px 9px;border-radius:2px;
  background:transparent;border:1px solid rgba(207,227,196,.3);
  color:rgba(231,237,226,.85);font-size:11px;letter-spacing:.1em;
  cursor:pointer;transition:border-color .18s var(--ease),color .18s var(--ease);
}
.gx-copy:hover,.gx-copy:focus-visible{border-color:var(--gold);color:var(--gold)}
.gx-copy[data-copied="true"]{border-color:var(--gold);color:var(--gold);background:rgba(216,166,58,.12)}
.gx-footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:8px 24px;
  width:100%;max-width:1560px;margin-inline:auto;
  padding:16px var(--gutter) 30px;
  border-top:1px solid var(--line-dark);
  font-size:12px;letter-spacing:.08em;color:rgba(207,227,196,.6);
}
.gx-footer__icp{letter-spacing:.06em}

@media (max-width:1080px){
  .gx-footer__inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .gx-footer__brand{grid-column:1 / -1}
}
@media (max-width:720px){
  .gx-footer__inner{grid-template-columns:minmax(0,1fr)}
  .gx-footer__cols{grid-template-columns:1fr 1fr}
  .gx-footer__legal{flex-direction:column;align-items:flex-start}
}

/* ============ 8. 通用组件 ============ */
.gx-grid{display:grid;gap:var(--gap)}
.gx-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.gx-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){
  .gx-grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  .gx-grid--2,.gx-grid--3{grid-template-columns:minmax(0,1fr)}
}

.gx-card{
  position:relative;
  padding:clamp(18px,2vw,26px);
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:2px;
  box-shadow:var(--shadow);
  transition:border-color .2s var(--ease),transform .2s var(--ease);
}
.gx-card:hover{border-color:rgba(47,125,78,.45)}
.gx-card__kicker{
  font-size:11px;letter-spacing:.18em;color:var(--bronze);margin-bottom:8px;
}

.gx-panel{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:2px;
}
.gx-panel + .gx-panel{margin-top:10px}
.gx-panel > summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:14px 18px;cursor:pointer;
  font-weight:600;color:var(--deep);
  list-style:none;
}
.gx-panel > summary::-webkit-details-marker{display:none}
.gx-panel > summary::after{
  content:"＋";flex:none;font-size:14px;color:var(--green);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.gx-panel[open] > summary::after{transform:rotate(45deg);color:var(--gold)}
.gx-panel > summary:hover{color:var(--green)}
.gx-panel__body{
  padding:0 18px 18px;
  border-top:1px solid var(--line-soft);
  font-size:.97rem;color:#2c3a30;
}
.gx-panel__body > :first-child{margin-top:12px}

.gx-table{width:100%;border-collapse:collapse;font-size:.94rem}
.gx-table caption{
  text-align:left;font-size:12px;letter-spacing:.14em;color:var(--moss);
  padding-bottom:8px;
}
.gx-table th{
  text-align:left;font-size:11px;letter-spacing:.14em;font-weight:600;
  color:var(--moss);padding:10px 12px;border-bottom:1px solid var(--line);
}
.gx-table td{
  padding:12px;border-bottom:1px solid var(--line-soft);vertical-align:top;
}
.gx-table tbody tr:nth-child(even){background:rgba(231,237,226,.55)}
.gx-table--compact th,.gx-table--compact td{padding:7px 10px}

.gx-crumbs{
  display:flex;flex-wrap:wrap;gap:4px 0;
  font-size:12px;letter-spacing:.12em;color:var(--moss);
}
.gx-crumbs li{display:inline-flex;align-items:center}
.gx-crumbs li::after{content:"/";margin-inline:8px;color:rgba(110,143,90,.55)}
.gx-crumbs li:last-child::after{content:none}
.gx-crumbs a{text-decoration:none;color:var(--moss)}
.gx-crumbs a:hover{color:var(--green);text-decoration:underline;text-underline-offset:3px}
.gx-crumbs [aria-current="page"]{color:var(--deep)}

.gx-figure{margin:0;display:grid;gap:.65rem}
.gx-figure__media{
  position:relative;overflow:hidden;border-radius:2px;
  aspect-ratio:4 / 3;
  background-color:#102A1E;
  background-image:
    linear-gradient(140deg,rgba(16,42,30,.95),rgba(47,125,78,.8) 58%,rgba(110,143,90,.75)),
    repeating-linear-gradient(45deg,rgba(207,227,196,.16) 0 1px,transparent 1px 18px),
    repeating-linear-gradient(-45deg,rgba(207,227,196,.12) 0 1px,transparent 1px 24px);
  background-size:cover,cover,cover;
  border:1px solid rgba(16,42,30,.12);
}
.gx-figure__media img{
  width:100%;height:100%;object-fit:cover;display:block;
}
.gx-figure__caption{
  font-size:12px;letter-spacing:.08em;line-height:1.7;color:var(--moss);
}
.gx-figure--wide .gx-figure__media{aspect-ratio:16 / 9}
.gx-figure--tall .gx-figure__media{aspect-ratio:3 / 4}

.gx-sr{
  position:absolute;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;
}

/* 进场显现 */
.gx-js [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.gx-js [data-reveal].is-revealed{opacity:1;transform:none}

/* ============ 9. 动效偏好 ============ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .gx-js [data-reveal]{opacity:1 !important;transform:none !important}
  .gx-progress__bar{transition:none}
}