/* ==========================================================================
   新花园国际CN · /assets/site.css
   共享层：变量 / 中文排版 / 侧轨头部 / 信息带页脚 / 基础组件
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --moon:#F7F5EE;
  --moss:#2F4A3A;
  --ink:#14251C;
  --mist:#AEBFB2;
  --paper:#EFE8D8;
  --gold:#C6A15B;
  --coral:#E8A091;
  --wine:#6E2F3A;
  --iris:#4A3B66;
  --char:#22231F;

  --rail-w:104px;
  --maxw:1320px;
  --gutter:clamp(18px,4vw,56px);

  --serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;

  --rule:rgba(34,35,31,.16);
  --rule-soft:rgba(34,35,31,.09);
  --rule-light:rgba(247,245,238,.16);
  --shadow-1:0 1px 0 rgba(20,37,28,.06),0 18px 34px -22px rgba(20,37,28,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol,fieldset{margin:0}
ul,ol{padding:0}
ul[class],ol[class]{list-style:none}
img,svg,video{max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit}
main{display:block}

/* ---------- 3. 中文排版基线 ---------- */
body{
  min-height:100vh;
  background-color:var(--moon);
  color:var(--char);
  font-family:var(--sans);
  font-size:clamp(15px,0.55vw + 13px,17px);
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{
  font-family:var(--serif);
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.28;
  color:var(--ink);
}
h1{font-size:clamp(2.6rem,5.6vw,5.4rem);font-weight:800}
h2{font-size:clamp(1.5rem,2.4vw,2.1rem)}
h3{font-size:clamp(1.15rem,1.6vw,1.35rem);letter-spacing:.03em}
p{max-width:68ch}
::selection{background:var(--gold);color:var(--ink)}

:where(a,button,summary,input,[tabindex]):focus-visible{
  outline:2px solid var(--coral);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- 4. 排版工具 ---------- */
.mono{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.12em;
  font-variant-numeric:tabular-nums;
}
.lede{
  font-size:clamp(16px,1.3vw,19px);
  line-height:1.95;
  color:rgba(34,35,31,.78);
  max-width:56ch;
}
.prose{max-width:68ch}
.prose p + p{margin-top:1em}
.divider{
  height:1px;border:0;margin:clamp(24px,4vw,44px) 0;
  background:linear-gradient(90deg,var(--gold),rgba(198,161,91,0) 72%);
}

/* ---------- 5. 布局 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.grid{display:grid;gap:clamp(20px,3vw,40px);grid-template-columns:1fr}
.grid--thirds{grid-template-columns:1fr}
@media (min-width:900px){
  .grid--split{grid-template-columns:5fr 7fr}
  .grid--thirds{grid-template-columns:repeat(3,1fr)}
}

/* ---------- 6. 基础组件 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55em;
  font-family:var(--sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:2px;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),
             color .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--solid{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn--solid:hover{background:#d5b478;border-color:#d5b478}
.btn--ghost{background:transparent;color:var(--moon);border-color:rgba(247,245,238,.45)}
.btn--ghost:hover{color:var(--gold);border-color:var(--gold)}
.btn--moss{background:var(--moss);color:var(--moon);border-color:var(--moss)}
.btn--moss:hover{background:var(--ink);border-color:var(--ink)}

.tag{
  display:inline-block;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.14em;
  padding:3px 9px;
  border:1px solid var(--rule);
  background:var(--paper);
  color:var(--moss);
  white-space:nowrap;
}
.tag--gold{background:rgba(198,161,91,.14);border-color:rgba(198,161,91,.65);color:#7d5f28}
.tag--wine{background:rgba(110,47,58,.1);border-color:rgba(110,47,58,.4);color:var(--wine)}
.tag--iris{background:rgba(74,59,102,.1);border-color:rgba(74,59,102,.4);color:var(--iris)}

.paper-card{
  position:relative;
  background:var(--paper);
  border:1px solid var(--rule);
  box-shadow:var(--shadow-1);
  padding:clamp(18px,3vw,32px);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.paper-card:hover{transform:translateY(-3px);box-shadow:0 2px 0 rgba(20,37,28,.06),0 26px 42px -26px rgba(20,37,28,.55)}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:.7em;
  padding-bottom:.55em;
  margin-bottom:1.6em;
  border-bottom:1px solid var(--rule);
}
.section-head__idx{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--gold);
}
.section-head__title{
  font-family:var(--serif);
  font-size:clamp(1.2rem,1.8vw,1.5rem);
  font-weight:700;
  letter-spacing:.04em;
  color:var(--ink);
}

.breadcrumb{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  color:rgba(34,35,31,.55);
}
.breadcrumb ol{
  display:flex;flex-wrap:wrap;gap:.5em;
  list-style:none;margin:0;padding:0;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:.5em}
.breadcrumb li::after{content:"/";color:rgba(34,35,31,.3)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--moss);text-decoration:none;border-bottom:1px solid transparent}
.breadcrumb a:hover{color:var(--ink);border-bottom-color:var(--gold)}
.breadcrumb [aria-current="page"]{color:rgba(34,35,31,.62)}

/* 图片容器基础规则：页面阶段在其中放置 <img class="media__img"> */
.media{
  position:relative;
  overflow:hidden;
  border:1px solid var(--rule);
  background:
    linear-gradient(135deg,var(--mist) 0%,#dfe6dd 52%,var(--paper) 100%);
}
.media::before{
  content:"";
  position:absolute;inset:0;
  background:
    repeating-linear-gradient(90deg,rgba(20,37,28,.09) 0 1px,transparent 1px 16px),
    repeating-linear-gradient(0deg,rgba(20,37,28,.09) 0 1px,transparent 1px 16px);
  opacity:.55;
  pointer-events:none;
}
.media--4x3{aspect-ratio:4 / 3}
.media--16x9{aspect-ratio:16 / 9}
.media--tall{aspect-ratio:3 / 4}
.media__img{
  display:block;
  width:100%;height:100%;
  object-fit:cover;
  position:relative;z-index:1;
}
.media__cap{
  position:absolute;left:0;bottom:0;z-index:2;
  font-family:var(--mono);
  font-size:10px;letter-spacing:.16em;
  padding:6px 10px;
  background:rgba(20,37,28,.72);
  color:var(--moon);
}

/* ---------- 7. 头部 / 侧轨 ---------- */
.skip-link{
  position:fixed;
  top:8px;left:8px;
  z-index:200;
  transform:translateY(-180%);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:13px;font-weight:600;
  padding:12px 18px;
  border:1px solid var(--gold);
  text-decoration:none;
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

.site-head{position:sticky;top:0;z-index:80}

.rail{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:12px clamp(14px,4vw,22px);
  background-color:var(--moss);
  background-image:linear-gradient(180deg,rgba(20,37,28,.45),rgba(47,74,58,0) 70%);
  color:var(--moon);
  border-bottom:1px solid rgba(198,161,91,.34);
}

.rail__brand{order:1;flex:1 1 auto;min-width:0}

.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}
.brand__mark{
  display:grid;place-items:center;
  flex:0 0 auto;
  width:34px;height:34px;
  border:1px solid rgba(198,161,91,.55);
  color:var(--gold);
}
.brand__mark svg{display:block;width:20px;height:20px}
.brand__text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand__name{
  font-family:var(--serif);
  font-weight:700;
  font-size:15px;
  letter-spacing:.14em;
  color:var(--moon);
}
.brand__tag{
  font-family:var(--mono);
  font-size:9px;
  letter-spacing:.2em;
  color:rgba(198,161,91,.85);
}

.rail__foot{order:2;flex:0 0 auto;display:flex;align-items:center;gap:10px}
.rail__utility{
  display:inline-block;
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.16em;
  padding:6px 9px;
  color:var(--gold);
  text-decoration:none;
  border:1px solid rgba(198,161,91,.45);
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.rail__utility:hover{background:var(--gold);color:var(--ink)}
.rail__note{
  display:none;
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.1em;
  color:rgba(247,245,238,.48);
}

.rail__toggle{
  order:3;
  position:relative;
  z-index:100;
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border:1px solid rgba(247,245,238,.35);
  border-radius:2px;
  color:var(--moon);
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.18em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.rail__toggle:hover{border-color:var(--gold);color:var(--gold)}
.rail__toggle-bars{display:grid;gap:4px;width:16px}
.rail__toggle-bars span{
  display:block;
  height:1.5px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(2){opacity:0}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}
.rail__toggle-text{white-space:nowrap}

/* 导航：移动端抽屉 */
.nav{
  position:fixed;
  inset:0 auto 0 0;
  z-index:90;
  width:min(80vw,320px);
  padding:calc(72px + env(safe-area-inset-top,0px)) 22px 32px;
  overflow-y:auto;
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(180deg,transparent 0 39px,rgba(198,161,91,.1) 39px 40px);
  color:var(--moon);
  border-right:1px solid rgba(198,161,91,.4);
  transform:translateX(-104%);
  visibility:hidden;
  transition:transform .24s var(--ease),visibility .24s var(--ease);
}
.site-head[data-open] .nav{transform:translateX(0);visibility:visible}

.nav__list{display:flex;flex-direction:column;gap:2px;margin:0;padding:0;list-style:none}
.nav__item{min-width:0}
.nav__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 6px;
  border-bottom:1px solid rgba(247,245,238,.12);
  color:rgba(247,245,238,.78);
  text-decoration:none;
  font-family:var(--sans);
  font-size:15px;
  letter-spacing:.08em;
  transition:color .18s var(--ease),background-color .18s var(--ease),
             box-shadow .18s var(--ease);
}
.nav__idx{
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.1em;
  color:rgba(198,161,91,.9);
  min-width:2.2em;
}
.nav__label{letter-spacing:.08em}
.nav__link:hover{color:var(--moon);background:rgba(247,245,238,.06)}
.nav__link[aria-current="page"]{
  color:var(--gold);
  box-shadow:inset 2px 0 0 var(--gold);
  padding-left:14px;
}
.nav__link[aria-current="page"] .nav__idx{color:var(--gold)}

.nav-scrim{
  position:fixed;
  inset:0;
  z-index:85;
  padding:0;
  border:0;
  background:rgba(20,37,28,.55);
  opacity:0;
  visibility:hidden;
  cursor:pointer;
  transition:opacity .2s var(--ease),visibility .2s var(--ease);
}
.site-head[data-open] .nav-scrim{opacity:1;visibility:visible}

/* 阅读进度 */
.read-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  z-index:95;
  height:2px;
  background:rgba(247,245,238,.14);
  overflow:hidden;
}
.read-progress__bar{
  display:block;
  width:100%;height:100%;
  transform:scaleX(var(--p,0));
  transform-origin:left center;
  background:linear-gradient(90deg,var(--gold),var(--coral));
  transition:transform .1s linear;
}

/* ---------- 8. 页脚信息带 ---------- */
.site-foot{
  margin-top:clamp(48px,7vw,96px);
  background-color:var(--moss);
  background-image:linear-gradient(160deg,rgba(20,37,28,.5),rgba(47,74,58,0) 58%);
  color:var(--moon);
  border-top:1px solid rgba(198,161,91,.45);
}
.foot__band{padding:clamp(36px,5vw,64px) 0}
.foot__inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(28px,4vw,44px);
}
.foot__brand{min-width:0}
.foot__kicker{
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.24em;
  color:var(--gold);
  margin-bottom:10px;
}
.foot__title{
  font-family:var(--serif);
  font-weight:700;
  font-size:clamp(22px,2.6vw,32px);
  letter-spacing:.04em;
  line-height:1.35;
  color:var(--moon);
  margin-bottom:12px;
}
.foot__meta{
  font-size:14px;
  line-height:1.85;
  color:rgba(247,245,238,.7);
  max-width:34ch;
}
.foot__nav{min-width:0}
.foot__nav-title{
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.22em;
  color:rgba(198,161,91,.92);
  margin-bottom:14px;
}
.foot__nav-list{display:grid;gap:8px;margin:0;padding:0;list-style:none}
.foot__nav-link{
  display:inline-block;
  padding:2px 0;
  font-size:14px;
  letter-spacing:.06em;
  color:rgba(247,245,238,.8);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.foot__nav-link:hover{color:var(--gold);border-bottom-color:rgba(198,161,91,.55)}
.foot__contact{min-width:0}
.foot__contact-list{display:grid;gap:12px;margin:0;padding:0}
.foot__contact-row{
  display:grid;
  grid-template-columns:48px 1fr;
  gap:10px;
  align-items:baseline;
}
.foot__contact-row dt{
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.16em;
  color:rgba(247,245,238,.48);
}
.foot__contact-row dd{
  margin:0;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--moon);
  overflow-wrap:anywhere;
}
.foot__note{
  margin-top:14px;
  max-width:36ch;
  font-size:12px;
  line-height:1.8;
  color:rgba(247,245,238,.55);
}
.foot__actions{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:12px;
}
.foot__actions .btn{width:100%}

.foot__legal{
  background:var(--ink);
  border-top:1px solid rgba(198,161,91,.25);
}
.foot__legal-inner{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:16px var(--gutter);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.12em;
  color:rgba(247,245,238,.55);
}
.foot__icp{margin:0}
.foot__legal-list{display:flex;flex-wrap:wrap;gap:18px;margin:0;padding:0;list-style:none}
.foot__legal-link{
  color:rgba(247,245,238,.72);
  text-decoration:none;
  padding-bottom:1px;
  border-bottom:1px solid rgba(247,245,238,.22);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.foot__legal-link:hover{color:var(--gold);border-bottom-color:var(--gold)}
.foot__sig{margin:0 0 0 auto;color:rgba(198,161,91,.85)}

/* ---------- 9. 断点 ---------- */
@media (min-width:760px){
  .foot__inner{grid-template-columns:1.2fr 1fr}
  .foot__actions .btn{width:auto}
}
@media (min-width:1100px){
  .foot__inner{grid-template-columns:1.15fr .72fr 1fr .86fr;align-items:start}
  .foot__actions{justify-self:end}
}

@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  body[data-nav-lock]{overflow:auto}

  .site-head{
    position:fixed;
    inset:0 auto 0 0;
    width:var(--rail-w);
    z-index:80;
  }
  .rail{
    height:100vh;
    height:100dvh;
    flex-direction:column;
    align-items:center;
    justify-content:flex-start;
    gap:0;
    padding:22px 0 16px;
    border-bottom:0;
    border-right:1px solid rgba(198,161,91,.35);
    overflow:hidden;
  }
  .rail__brand{order:1;flex:0 0 auto;width:100%}
  .brand{flex-direction:column;gap:12px;align-items:center;text-align:center}
  .brand__mark{width:38px;height:38px}
  .brand__mark svg{width:22px;height:22px}
  .brand__text{flex-direction:row;gap:6px;align-items:flex-start;justify-content:center}
  .brand__name{
    writing-mode:vertical-rl;
    text-orientation:upright;
    font-size:13px;
    letter-spacing:.26em;
  }
  .brand__tag{
    writing-mode:vertical-rl;
    text-orientation:upright;
    font-size:9px;
    letter-spacing:.24em;
  }

  .nav{
    position:static;
    inset:auto;
    width:100%;
    flex:1 1 auto;
    min-height:0;
    order:2;
    display:flex;
    align-items:center;
    justify-content:center;
    margin-top:18px;
    padding:8px 0;
    overflow-y:auto;
    overflow-x:hidden;
    background-color:transparent;
    background-image:none;
    color:inherit;
    border-right:0;
    transform:none;
    visibility:visible;
    transition:none;
    scrollbar-width:none;
  }
  .nav::-webkit-scrollbar{display:none}
  .nav__list{
    flex-direction:column;
    align-items:center;
    gap:14px;
    width:100%;
  }
  .nav__link{
    display:block;
    width:100%;
    padding:4px 0;
    border-bottom:0;
    writing-mode:vertical-rl;
    text-orientation:upright;
    text-align:center;
    font-size:12px;
    letter-spacing:.24em;
    color:rgba(247,245,238,.66);
  }
  .nav__link:hover{background:transparent;color:var(--moon)}
  .nav__idx{display:none}
  .nav__link[aria-current="page"]{
    padding-left:0;
    box-shadow:none;
    color:var(--gold);
  }
  .nav__link[aria-current="page"]::before{
    content:"";
    position:absolute;
    left:50%;
    top:-9px;
    width:4px;height:4px;
    margin-left:-2px;
    border-radius:50%;
    background:var(--gold);
  }

  .rail__foot{
    order:3;
    width:100%;
    flex-direction:column;
    align-items:center;
    gap:10px;
    margin-top:auto;
    padding-top:14px;
    border-top:1px solid rgba(247,245,238,.14);
  }
  .rail__utility{font-size:9px;padding:5px 8px;letter-spacing:.14em}
  .rail__note{
    display:block;
    padding:0 10px;
    font-size:9px;
    line-height:1.6;
    letter-spacing:.08em;
    text-align:center;
  }
  .rail__toggle{display:none}
  .nav-scrim{display:none}

  .read-progress{
    left:auto;right:0;top:0;bottom:0;
    width:2px;height:auto;
    background:rgba(247,245,238,.12);
  }
  .read-progress__bar{
    transform:scaleY(var(--p,0));
    transform-origin:center top;
    background:linear-gradient(180deg,var(--gold),var(--coral));
  }
}

/* ---------- 10. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}