/* =========================================================
   奇异果CN 共享样式表 /assets/site.css
   1 变量  2 重置与中文排版  3 排版组件  4 布局与网格
   5 按钮与标签  6 头部竖轨  7 页脚  8 图片容器  9 动效与可访问性
   ========================================================= */

/* ===== 1 变量 ===== */
:root{
  --kiwi-flesh:#8FCB4A;
  --kiwi-flesh-soft:#DDF0B8;
  --deep-ink-green:#17301E;
  --skin-brown:#6B4A2F;
  --skin-brown-soft:#C9A987;
  --lemon-sour:#F2D129;
  --sakura-sweet:#F7C6D0;
  --paper-cream:#FBF8F1;
  --seed-black:#2B2B23;
  --alert-clay:#B5442B;

  --hair:rgba(107,74,47,.28);
  --hair-light:rgba(201,169,135,.34);

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"MiSans","Alibaba PuHuiTi","HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"SFMono-Regular",ui-monospace,"Menlo","Consolas","Courier New",monospace;

  --topbar-h:56px;
  --rail-w:88px;
  --rail-w-open:276px;
  --gutter:24px;
  --maxw:1280px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ===== 2 重置与中文排版 ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-top:var(--topbar-h);
  background-color:var(--paper-cream);
  background-image:repeating-linear-gradient(90deg,rgba(107,74,47,.055) 0 1px,transparent 1px 96px);
  color:var(--deep-ink-green);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{max-width:100%;height:auto;display:block}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.2;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
::selection{background:var(--lemon-sour);color:var(--deep-ink-green)}
:focus-visible{outline:2px solid var(--kiwi-flesh);outline-offset:3px}
.site-header :focus-visible,.site-footer :focus-visible{outline-color:var(--lemon-sour)}

/* ===== 3 排版组件 ===== */
.display{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(2.6rem,7.5vw,6.4rem);
  line-height:.98;
  letter-spacing:-.02em;
  margin:0;
}
.display--sm{font-size:clamp(2rem,5vw,3.4rem);line-height:1.04}
.section-label{
  display:inline-flex;align-items:center;gap:10px;
  font-size:15px;font-weight:700;letter-spacing:.08em;
  color:var(--deep-ink-green);margin:0 0 14px;
}
.section-label::before{content:"";width:22px;height:8px;background:var(--kiwi-flesh);flex:none}
.section--ink .section-label{color:var(--paper-cream)}
.section--ink .section-label::before{background:var(--lemon-sour)}
.eyebrow{
  display:block;font-size:13px;font-weight:700;letter-spacing:.2em;
  color:var(--skin-brown);margin:0 0 10px;
}
.lede{font-size:20px;line-height:1.7;font-weight:400}
.prose{max-width:37em}
.prose p,.prose ul,.prose ol{max-width:37em}
.prose ul{list-style:disc;padding-left:1.2em}
.prose ol{list-style:decimal;padding-left:1.4em}
.prose li{margin:.3em 0}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.hairline{height:1px;background:var(--hair);border:0;margin:0}

/* ===== 4 布局与网格 ===== */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.container--narrow{max-width:820px}
@media (min-width:768px){.container{padding:0 32px}}
@media (min-width:1024px){.container{padding:0 44px}}
.section{padding:56px 0}
.section--soft{background:var(--kiwi-flesh-soft)}
.section--ink{background:var(--deep-ink-green);color:var(--paper-cream)}
.section--ink a{color:var(--kiwi-flesh)}
@media (min-width:1024px){.section{padding:96px 0}}
.flow>*+*{margin-top:1.1em}
.grid12{display:grid;grid-template-columns:1fr;gap:var(--gutter)}
@media (min-width:768px){
  .grid12{grid-template-columns:repeat(12,1fr)}
  .span-3{grid-column:span 3}
  .span-4{grid-column:span 4}
  .span-5{grid-column:span 5}
  .span-6{grid-column:span 6}
  .span-7{grid-column:span 7}
  .span-8{grid-column:span 8}
  .span-12{grid-column:span 12}
  .offset-1{grid-column-start:2}
}
.card-wall{display:grid;gap:var(--gutter);grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

/* ===== 5 按钮与标签 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 22px;border:1px solid var(--deep-ink-green);
  background:transparent;color:var(--deep-ink-green);
  font-size:16px;font-weight:700;text-decoration:none;cursor:pointer;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),
             border-color 180ms var(--ease),transform 180ms var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--flesh{background:var(--kiwi-flesh);border-color:var(--kiwi-flesh)}
.btn--flesh:hover{background:var(--lemon-sour);border-color:var(--lemon-sour)}
.btn--ink{background:var(--deep-ink-green);color:var(--paper-cream)}
.btn--ink:hover{background:var(--kiwi-flesh);color:var(--deep-ink-green);border-color:var(--kiwi-flesh)}
.btn--ghost{border-color:var(--skin-brown);color:var(--skin-brown)}
.btn--ghost:hover{background:var(--kiwi-flesh-soft);border-color:var(--deep-ink-green);color:var(--deep-ink-green)}
.btn--block{width:100%}
.tag{
  display:inline-block;padding:3px 11px;border-radius:999px;
  border:1px solid var(--skin-brown-soft);color:var(--skin-brown);
  font-size:13px;font-weight:700;line-height:1.6;white-space:nowrap;
}
.tag--lemon{background:var(--lemon-sour);border-color:var(--lemon-sour);color:var(--deep-ink-green)}
.tag--sakura{background:var(--sakura-sweet);border-color:var(--sakura-sweet);color:var(--deep-ink-green)}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:0;font-size:14px;color:var(--skin-brown);margin:0 0 18px}
.breadcrumb a{color:var(--deep-ink-green);text-decoration:none;border-bottom:1px solid var(--kiwi-flesh)}
.breadcrumb a:hover{border-bottom-color:var(--lemon-sour)}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li+li::before{content:"/";margin:0 9px;color:var(--skin-brown-soft)}

/* ===== 6 头部竖轨 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;height:var(--topbar-h);z-index:90;
  background:var(--deep-ink-green);border-bottom:1px solid var(--hair-light);
  pointer-events:auto;
}
.skip-link{
  position:fixed;top:8px;left:8px;z-index:12;pointer-events:auto;
  padding:10px 18px;background:var(--deep-ink-green);color:var(--paper-cream);
  border:2px solid var(--kiwi-flesh);font-weight:700;font-size:15px;text-decoration:none;
  transform:translateY(-220%);transition:transform 180ms var(--ease);
}
.skip-link:focus{transform:translateY(0)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;height:100%;padding:0 16px}
.topbar__brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--paper-cream)}
.topbar__name{font-size:16px;font-weight:700;letter-spacing:.02em}
.rail__seed{
  width:27px;height:27px;flex:none;border-radius:50%;
  background-image:
    radial-gradient(circle at 50% 50%,var(--seed-black) 0 1.6px,transparent 1.7px),
    radial-gradient(circle at 50% 50%,#A7DC63 0%,var(--kiwi-flesh) 62%,#6FA83A 100%);
  background-size:9px 9px,100% 100%;
  background-position:1px 1px,0 0;
}
.nav-toggle{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 12px;border:1px solid var(--kiwi-flesh);color:var(--kiwi-flesh);
  font-size:14px;font-weight:700;cursor:pointer;
  transition:background-color 180ms var(--ease),color 180ms var(--ease);
}
.nav-toggle:hover{background:var(--kiwi-flesh);color:var(--deep-ink-green)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform 200ms var(--ease),opacity 160ms var(--ease)}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.nav-scrim{
  position:fixed;inset:0;z-index:1;background:rgba(23,48,30,.52);
  opacity:0;pointer-events:none;transition:opacity 240ms var(--ease);
}
.site-header[data-open="true"] .nav-scrim{opacity:1;pointer-events:auto}

.rail{
  position:fixed;top:var(--topbar-h);left:0;bottom:0;z-index:2;
  width:min(84vw,340px);
  display:flex;flex-direction:column;
  background:var(--deep-ink-green);color:var(--paper-cream);
  border-right:1px solid var(--skin-brown);
  overflow-y:auto;overflow-x:hidden;
  transform:translateX(-104%);visibility:hidden;
  transition:transform 280ms var(--ease),visibility 0s linear 280ms;
}
.site-header[data-open="true"] .rail{transform:translateX(0);visibility:visible;transition:transform 280ms var(--ease),visibility 0s}
.rail__brand{
  display:flex;align-items:center;gap:12px;
  padding:20px 22px 18px;text-decoration:none;color:var(--paper-cream);
  border-bottom:1px solid var(--hair-light);
}
.rail__brand-text{display:flex;flex-direction:column;min-width:0}
.rail__brand-line{display:none;font-size:16px;font-weight:700}
.rail__tagline{font-size:13px;color:var(--kiwi-flesh);letter-spacing:.04em;white-space:nowrap}
.rail__nav{flex:1 1 auto;padding:12px 0}
.nav-list{display:flex;flex-direction:column;gap:2px;padding:0 22px}
.nav-seed{
  display:flex;align-items:center;gap:14px;
  padding:12px 10px;border-left:2px solid transparent;
  color:rgba(251,248,241,.78);text-decoration:none;
  font-size:17px;font-weight:700;
  transition:color 180ms var(--ease),background-color 180ms var(--ease),border-color 180ms var(--ease);
}
.nav-seed__dot{
  width:10px;height:10px;flex:none;border-radius:50%;background:var(--skin-brown-soft);
  transition:transform 220ms var(--ease),background-color 180ms var(--ease);
}
.nav-seed__label{white-space:nowrap}
.nav-seed:hover{color:var(--paper-cream);background:rgba(143,203,74,.12)}
.nav-seed:hover .nav-seed__dot{background:var(--kiwi-flesh);transform:scale(1.35)}
.nav-seed:active .nav-seed__dot{transform:scale(1.1)}
.nav-seed[aria-current="page"]{color:var(--lemon-sour);border-left-color:var(--lemon-sour)}
.nav-seed[aria-current="page"] .nav-seed__dot{background:var(--lemon-sour);transform:scale(1.1)}
.rail__foot{padding:18px 22px 26px;border-top:1px solid var(--hair-light);margin-top:auto}
.rail__cta{
  display:flex;align-items:center;justify-content:center;gap:10px;
  width:100%;padding:13px 18px;
  background:var(--kiwi-flesh);color:var(--deep-ink-green);
  border:1px solid var(--deep-ink-green);
  font-size:16px;font-weight:700;text-decoration:none;
  transition:background-color 180ms var(--ease),width 240ms var(--ease);
}
.rail__cta:hover{background:var(--lemon-sour)}
.rail__cta-dot{width:8px;height:8px;flex:none;border-radius:50%;background:var(--seed-black)}
.rail__cta-label{white-space:nowrap}

@media (min-width:1024px){
  body{padding-top:0;padding-left:var(--rail-w)}
  .site-header{
    top:0;bottom:0;left:0;right:auto;height:auto;width:auto;
    background:transparent;border:0;pointer-events:none;
  }
  .topbar{display:none}
  .nav-scrim{display:none}
  .rail{
    position:relative;top:0;left:0;bottom:auto;height:100%;
    width:var(--rail-w);transform:none;visibility:visible;
    overflow:hidden;pointer-events:auto;z-index:auto;
    transition:width 260ms var(--ease);
  }
  .site-header:hover .rail,.site-header:focus-within .rail{width:var(--rail-w-open)}
  .rail__brand{padding:22px 20px 20px 30px}
  .rail__brand-line{display:block}
  .rail__brand-text{opacity:0;transform:translateX(-6px);transition:opacity 160ms var(--ease),transform 220ms var(--ease)}
  .site-header:hover .rail__brand-text,.site-header:focus-within .rail__brand-text{opacity:1;transform:none}
  .rail__nav{padding:18px 0;overflow:hidden}
  .nav-list{padding:0 20px 0 30px}
  .nav-seed{padding:11px 0}
  .nav-seed__dot{margin-left:9px}
  .nav-seed__label{
    opacity:0;transform:translateX(-6px);
    transition:opacity 160ms var(--ease),transform 220ms var(--ease);
  }
  .site-header:hover .nav-seed__label,.site-header:focus-within .nav-seed__label{opacity:1;transform:none}
  .rail__foot{padding:20px 0 28px}
  .rail__cta{width:44px;margin:0 0 0 22px;padding:12px;justify-content:flex-start;overflow:hidden}
  .rail__cta-label{opacity:0;transition:opacity 160ms var(--ease)}
  .site-header:hover .rail__cta{width:calc(var(--rail-w-open) - 44px)}
  .site-header:hover .rail__cta-label,.site-header:focus-within .rail__cta-label{opacity:1}
}

/* ===== 7 页脚 ===== */
.site-footer{position:relative;color:var(--paper-cream)}
.foot-slash{height:34px;background:var(--deep-ink-green);clip-path:polygon(100% 0,100% 100%,0 100%)}
.foot-body{
  background-color:var(--deep-ink-green);
  background-image:repeating-linear-gradient(90deg,rgba(251,248,241,.045) 0 1px,transparent 1px 72px);
  padding:26px 0 30px;
}
@media (min-width:1024px){.foot-slash{height:64px}.foot-body{padding:34px 0 38px}}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.foot-grid{grid-template-columns:1.6fr 1fr 1.2fr 1fr 1.4fr;gap:36px}}
.foot-brand__link{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--paper-cream)}
.foot-brand__name{font-size:20px;font-weight:800;letter-spacing:.02em}
.foot-brand__tagline{margin:14px 0 10px;font-size:16px;font-weight:700;color:var(--kiwi-flesh)}
.foot-brand__note{font-size:15px;line-height:1.8;color:rgba(251,248,241,.7);max-width:30em}
.seed-array{display:grid;grid-template-columns:repeat(5,8px);gap:9px;margin:20px 0 0}
.seed-array__dot{width:8px;height:8px;border-radius:50%;background:rgba(201,169,135,.55);transition:transform 220ms var(--ease),background-color 180ms var(--ease)}
.seed-array__dot.is-on{background:var(--lemon-sour);transform:scale(1.1)}
.foot-col__title{margin:0 0 14px;font-size:14px;font-weight:700;letter-spacing:.16em;color:var(--kiwi-flesh)}
.foot-links li{margin:0}
.foot-links a{
  display:inline-block;padding:5px 0;font-size:16px;
  color:rgba(251,248,241,.78);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.foot-links a:hover{color:var(--lemon-sour);border-bottom-color:var(--lemon-sour)}
.foot-links a[aria-current="page"]{color:var(--lemon-sour);border-bottom-color:var(--kiwi-flesh)}
.foot-contact li{display:flex;flex-wrap:wrap;gap:0 10px;padding:4px 0;font-size:15px;color:rgba(251,248,241,.82)}
.foot-contact__key{min-width:3em;color:var(--skin-brown-soft);font-weight:700}
.foot-contact__value{word-break:break-all}
.foot-contact__note{margin:12px 0 0;font-size:14px;line-height:1.7;color:rgba(251,248,241,.6)}
.foot-base{margin-top:34px;padding-top:18px;border-top:1px solid var(--hair-light)}
.foot-legal{margin:0;font-size:14px;line-height:1.8;color:rgba(251,248,241,.66);font-variant-numeric:tabular-nums}

/* ===== 8 图片容器（供各页面复用） ===== */
.media{position:relative;display:block;overflow:hidden;background:var(--kiwi-flesh-soft);border:1px solid var(--hair)}
.media img,.media video{width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--3x2{aspect-ratio:3/2}
.media--1x1{aspect-ratio:1/1}
.media--3x4{aspect-ratio:3/4}
.media--flesh{
  background-image:
    radial-gradient(circle at 34% 32%,rgba(255,255,255,.55),transparent 56%),
    radial-gradient(circle at 72% 68%,rgba(143,203,74,.85),transparent 60%),
    repeating-linear-gradient(115deg,rgba(255,255,255,.18) 0 2px,transparent 2px 9px),
    radial-gradient(circle at 50% 50%,var(--seed-black) 0 1.5px,transparent 1.6px),
    linear-gradient(140deg,var(--kiwi-flesh),var(--kiwi-flesh-soft));
  background-size:auto,auto,auto,12px 12px,auto;
}
.media__overlay{
  position:absolute;right:6%;bottom:8%;width:38%;min-width:120px;
  border:1px solid var(--deep-ink-green);background:var(--paper-cream);padding:10px;
}
.media__caption{margin:10px 0 0;font-size:14px;color:var(--skin-brown)}

/* ===== 9 折叠、动效与可访问性 ===== */
.fold{border-top:1px solid var(--hair)}
.fold:last-child{border-bottom:1px solid var(--hair)}
.fold__summary{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:18px 0;cursor:pointer;font-size:17px;font-weight:700;color:var(--deep-ink-green);
  list-style:none;
}
.fold__summary::-webkit-details-marker{display:none}
.fold__summary:hover{color:var(--skin-brown)}
.fold__mark{position:relative;width:18px;height:18px;flex:none;margin-top:4px;transition:transform 260ms var(--ease)}
.fold__mark::before,.fold__mark::after{content:"";position:absolute;background:var(--skin-brown)}
.fold__mark::before{left:0;right:0;top:8px;height:2px}
.fold__mark::after{top:0;bottom:0;left:8px;width:2px;transition:transform 260ms var(--ease)}
.fold[open] .fold__mark::after{transform:scaleY(0)}
.fold__body{padding:0 0 22px;overflow:hidden;color:var(--deep-ink-green)}

.has-js [data-reveal]{opacity:0;transform:translateY(8px);transition:opacity 320ms var(--ease),transform 320ms var(--ease)}
.has-js [data-reveal].is-in{opacity:1;transform:none}
.has-js .wipe{position:relative;overflow:hidden}
.has-js .wipe::after{
  content:"";position:absolute;inset:0;background:var(--kiwi-flesh);
  transform:scaleY(1);transform-origin:bottom;
  transition:transform 240ms var(--ease);
}
.has-js .wipe.is-in::after{transform:scaleY(0)}
.scroll-progress{
  position:fixed;top:0;left:0;width:100%;height:3px;z-index:120;
  background:var(--lemon-sour);transform:scaleX(0);transform-origin:0 50%;
  pointer-events:none;
}
@media (min-width:1024px){.scroll-progress{left:var(--rail-w);width:calc(100% - var(--rail-w))}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .has-js .wipe::after{display:none}
  .btn:hover{transform:none}
}