/* ============================================================
   绿野 Luye · Halo 2 Theme
   深绿玻璃拟态（Glassmorphism）设计系统
   视觉语言移植自 Ron567 个人主页（ron567-home）
   ============================================================ */

:root{
  /* Backgrounds */
  --bg-top:#0E1F17;
  --bg-mid:#09120E;
  --bg-bottom:#08120E;
  /* Brand & text */
  --text:#EAF3EC;      /* headings / brand name */
  --green:#7DD9A6;     /* accent（可被主题设置覆盖） */
  --sub:#9DB5A8;       /* secondary text */
  --muted:#6E8B7C;     /* muted / captions */
  --para:#B9CDBF;      /* paragraph body */
  --light:#C9D8CF;     /* nav links / traits / contacts */
  /* Glass surfaces */
  --glass:rgba(255,255,255,0.05);
  --glass-2:rgba(255,255,255,0.04);
  --glass-border:rgba(255,255,255,0.10);
  --glass-border-soft:rgba(255,255,255,0.08);
  /* 由 accent 派生的描边色（color-mix，现代浏览器均支持） */
  --green-stroke:color-mix(in srgb, var(--green) 25%, transparent);
  --green-stroke-strong:color-mix(in srgb, var(--green) 50%, transparent);
  --green-tint:color-mix(in srgb, var(--green) 10%, transparent);
  --green-shadow:color-mix(in srgb, var(--green) 35%, transparent);
  /* Layout */
  --container:1200px;
  --nav-h:76px;
  --radius-card:20px;
  --radius-item:18px;
  /* Fonts */
  --serif:"Noto Serif SC","Songti SC","STSong","SimSun",serif;
  --sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --serif-en:"Source Serif 4","Georgia",serif;
  --mono:"JetBrains Mono","SFMono-Regular","Consolas",monospace;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:linear-gradient(180deg,var(--bg-top) 0%,var(--bg-mid) 40%,var(--bg-bottom) 100%) fixed,var(--bg-bottom);
  color:var(--text);
  font-family:var(--sans);
  font-weight:300;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  min-height:100vh;
}
a{color:inherit;text-decoration:none;}
ul,ol{list-style:none;}
img{max-width:100%;}
button{font-family:inherit;}
::selection{background:color-mix(in srgb,var(--green) 30%,transparent);color:var(--text);}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-bottom);}
::-webkit-scrollbar-thumb{background:rgba(125,217,166,0.22);border-radius:9999px;border:2px solid var(--bg-bottom);}
::-webkit-scrollbar-thumb:hover{background:rgba(125,217,166,0.4);}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.content{position:relative;z-index:1;}

/* ---------- 天气背景画布 ---------- */
#weather-canvas{
  position:fixed;inset:0;width:100%;height:100%;
  z-index:0;pointer-events:none;
}

/* ---------- 装饰雾光 ---------- */
.fog{position:fixed;z-index:0;pointer-events:none;filter:blur(20px);}
.fog-1{left:-160px;top:-40px;width:760px;height:760px;
  background:radial-gradient(circle,rgba(125,217,166,0.30) 0%,rgba(125,217,166,0) 70%);}
.fog-2{right:-180px;top:200px;width:680px;height:680px;
  background:radial-gradient(circle,rgba(51,107,77,0.42) 0%,rgba(51,107,77,0) 70%);}
.fog-3{left:50%;bottom:-200px;margin-left:-470px;width:940px;height:620px;
  background:radial-gradient(circle,rgba(77,140,107,0.26) 0%,rgba(77,140,107,0) 70%);}

/* ============================ NAV ============================ */
.nav{
  position:sticky;top:0;z-index:50;
  height:var(--nav-h);
  display:flex;align-items:center;gap:24px;
  padding:0 clamp(16px,4vw,48px);
  background:rgba(9,18,14,0.55);
  border-bottom:1px solid var(--glass-border-soft);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo .leaf{width:22px;height:22px;display:block;}
.logo .brand{display:flex;flex-direction:column;line-height:1;}
.logo .brand .name{font-family:var(--serif);font-weight:500;font-size:21px;color:var(--text);white-space:nowrap;}
.logo .brand .sub{font-family:var(--serif-en);font-weight:500;font-size:10px;color:var(--green);margin-top:3px;letter-spacing:1px;white-space:nowrap;}
.nav-center{flex:1;display:flex;justify-content:center;gap:32px;min-width:0;}
.nav-center a{
  font-family:var(--sans);font-weight:400;font-size:15px;color:var(--light);
  padding:6px 2px;white-space:nowrap;
  transition:color .3s ease;
  border-bottom:2px solid transparent;
}
.nav-center a:hover{color:var(--text);}
.nav-center a.active{color:var(--green);border-bottom-color:var(--green-stroke-strong);}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-cta{
  display:flex;align-items:center;justify-content:center;
  height:38px;padding:0 20px;border-radius:9999px;
  background:color-mix(in srgb,var(--green) 12%,transparent);
  border:1px solid var(--green-stroke-strong);
  color:var(--green);font-size:14px;font-weight:500;white-space:nowrap;
  transition:background .3s ease;
}
.nav-cta:hover{background:color-mix(in srgb,var(--green) 20%,transparent);}

/* 移动端汉堡按钮 */
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;
  background:var(--glass);border:1px solid var(--glass-border);
  cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--light);transition:transform .3s ease,opacity .3s ease;}
.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-open .nav-toggle span:nth-child(2){opacity:0;}
.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* 天气切换器 */
.weather-switch{
  display:flex;align-items:center;gap:2px;
  height:38px;padding:0 4px;border-radius:9999px;
  background:var(--glass);border:1px solid var(--glass-border);
}
.weather-btn{
  display:flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9999px;border:none;background:transparent;
  color:var(--muted);cursor:pointer;padding:0;
  transition:color .3s ease,background .3s ease;
}
.weather-btn:hover{color:var(--light);}
.weather-btn.active{color:#0C1712;background:var(--green);}
.weather-btn:focus-visible{outline:2px solid var(--green-stroke-strong);outline-offset:2px;}
.weather-btn svg{width:15px;height:15px;display:block;}

/* ============================ HERO ============================ */
.hero{
  display:flex;flex-direction:column;align-items:center;
  gap:28px;padding:110px 24px 90px;text-align:center;
}
.eyebrow{font-family:var(--serif-en);font-style:italic;font-size:15px;color:var(--green);}
.hero .headline{
  max-width:1000px;
  font-family:var(--serif);font-weight:300;
  font-size:clamp(34px,5vw,60px);line-height:125%;color:var(--text);
}
.hero .sub{
  max-width:680px;
  font-weight:300;font-size:clamp(15px,1.4vw,18px);line-height:185%;color:var(--sub);
}
.cta-row{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:center;}
.cta-primary{
  display:flex;align-items:center;justify-content:center;
  height:52px;padding:0 32px;border-radius:9999px;
  background:var(--green);
  color:#0C1712;font-size:16px;font-weight:500;
  box-shadow:0 8px 24px var(--green-shadow);
  transition:transform .3s ease,box-shadow .3s ease;
}
.cta-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px var(--green-shadow);}
.secondary-link{font-weight:400;font-size:15px;color:var(--light);transition:color .3s ease;}
.secondary-link:hover{color:var(--text);}
.scroll-hint{font-weight:300;font-size:13px;color:var(--muted);}
.hero-img{
  width:100%;max-width:1100px;height:auto;aspect-ratio:3.5/1;object-fit:cover;
  border-radius:24px;border:1px solid var(--glass-border);display:block;
}

/* ============================ 区块标题 ============================ */
.section{padding:80px 0;}
.section-head{display:flex;flex-direction:column;align-items:center;gap:14px;margin-bottom:48px;text-align:center;}
.section-head .eyebrow{font-size:14px;}
.section-head .title{font-family:var(--serif);font-weight:300;font-size:clamp(28px,3vw,40px);color:var(--text);}
.section-head .desc{max-width:640px;font-size:15px;line-height:180%;color:var(--sub);}
.section-foot{display:flex;align-items:center;justify-content:center;gap:20px;margin-top:44px;}
.more-link{
  display:flex;align-items:center;height:40px;padding:0 22px;border-radius:9999px;
  background:var(--glass);border:1px solid var(--green-stroke);
  color:var(--light);font-size:14px;
  transition:border-color .3s ease,background .3s ease;
}
.more-link:hover{border-color:var(--green-stroke-strong);background:color-mix(in srgb,var(--green) 8%,transparent);}

/* ============================ 文章列表（首页 / 分类 / 标签 / 归档） ============================ */
.post-list{display:flex;flex-direction:column;gap:18px;}
.post-item{
  position:relative;
  display:flex;flex-direction:column;gap:10px;
  padding:26px 32px;
  background:var(--glass-2);
  border:1px solid var(--glass-border-soft);
  border-radius:var(--radius-item);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  transition:transform .3s cubic-bezier(.16,1,.3,1),border-color .3s ease,background .3s ease;
}
.post-item:hover{transform:translateX(6px);border-color:color-mix(in srgb,var(--green) 30%,transparent);background:color-mix(in srgb,var(--green) 5%,transparent);}
.post-item-head{display:flex;align-items:baseline;justify-content:space-between;gap:24px;}
.post-title{font-family:var(--serif);font-weight:400;font-size:21px;color:var(--text);transition:color .3s ease;}
.post-item:hover .post-title{color:var(--green);}
.post-date{font-family:var(--serif-en);font-style:italic;font-size:14px;color:var(--green);flex:0 0 auto;}
.post-excerpt{font-weight:300;font-size:15px;line-height:175%;color:var(--sub);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.cat-pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:9999px;
  background:var(--green-tint);border:1px solid var(--green-stroke);
  color:var(--green);font-size:12px;
}
.tag-pill{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:9999px;
  background:var(--glass);border:1px solid var(--glass-border-soft);
  color:var(--muted);font-size:12px;transition:color .3s ease,border-color .3s ease;
}
.tag-pill:hover{color:var(--green);border-color:var(--green-stroke);}

/* 置顶文章大卡片 */
.post-featured{
  display:flex;flex-direction:column;gap:16px;
  padding:36px 36px 32px;margin-bottom:22px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 12px 30px rgba(0,0,0,0.20);
  transition:transform .35s cubic-bezier(.16,1,.3,1),box-shadow .35s ease,border-color .35s ease;
}
.post-featured:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(0,0,0,0.35);border-color:var(--green-stroke);}
.post-featured .card-top{display:flex;align-items:center;justify-content:space-between;}
.post-featured .idx{font-family:var(--serif-en);font-style:italic;font-size:20px;color:var(--green);}
.post-featured .leaf{width:20px;height:20px;display:block;}
.post-featured .post-title{font-size:clamp(22px,2.4vw,30px);line-height:140%;}
.post-featured .post-excerpt{-webkit-line-clamp:3;}
.post-featured .cover{
  width:100%;aspect-ratio:2.8/1;object-fit:cover;border-radius:14px;
  border:1px solid var(--glass-border-soft);
}

/* ============================ 网格卡片（分类 / 标签 / 友链） ============================ */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.glass-card{
  display:flex;flex-direction:column;gap:12px;
  min-height:150px;padding:28px 28px 24px;
  background:var(--glass);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 12px 30px rgba(0,0,0,0.20);
  transition:transform .35s cubic-bezier(.16,1,.3,1),box-shadow .35s ease,border-color .35s ease;
}
.glass-card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(0,0,0,0.35);border-color:var(--green-stroke);}
.card-top{display:flex;align-items:center;justify-content:space-between;}
.card-top .idx{font-family:var(--serif-en);font-style:italic;font-size:20px;color:var(--green);}
.card-top .leaf{width:20px;height:20px;display:block;}
.card-title{font-family:var(--serif);font-weight:400;font-size:22px;color:var(--text);}
.card-desc{font-weight:300;font-size:15px;line-height:170%;color:var(--sub);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-tag{font-weight:400;font-size:13px;color:var(--muted);margin-top:auto;}

/* ============================ 文章正文页 ============================ */
.post-hero{padding:90px 0 40px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:20px;}
.post-hero .headline{
  max-width:900px;font-family:var(--serif);font-weight:300;
  font-size:clamp(30px,4vw,48px);line-height:135%;color:var(--text);
}
.post-meta-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;font-size:14px;color:var(--sub);}
.post-meta-bar .sep{color:var(--muted);opacity:.6;}
.post-cover{
  width:100%;max-width:1000px;margin:30px auto 0;display:block;
  border-radius:24px;border:1px solid var(--glass-border);object-fit:cover;
}
.post-panel{
  margin:40px auto 0;padding:clamp(28px,5vw,64px);
  background:var(--glass-2);
  border:1px solid var(--glass-border-soft);
  border-radius:24px;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
}

/* 正文排版（渲染后的 Markdown / 富文本） */
.post-content{font-size:16px;line-height:1.9;color:var(--para);word-break:break-word;}
.post-content > *:first-child{margin-top:0;}
.post-content > *:last-child{margin-bottom:0;}
.post-content h1,.post-content h2,.post-content h3,
.post-content h4,.post-content h5,.post-content h6{
  font-family:var(--serif);color:var(--text);line-height:1.4;
  margin:2em 0 .8em;font-weight:500;
}
.post-content h1{font-size:28px;}
.post-content h2{font-size:24px;display:flex;align-items:center;gap:12px;}
.post-content h2::before{content:"";flex:0 0 auto;width:6px;height:22px;border-radius:4px;background:var(--green);}
.post-content h3{font-size:20px;}
.post-content h4{font-size:18px;}
.post-content h5,.post-content h6{font-size:16px;color:var(--light);}
.post-content p{margin:1.1em 0;}
.post-content a{color:var(--green);border-bottom:1px solid var(--green-stroke);transition:border-color .3s ease;}
.post-content a:hover{border-bottom-color:var(--green);}
.post-content strong{color:var(--text);font-weight:500;}
.post-content em{font-family:var(--serif);font-style:italic;}
.post-content ul,.post-content ol{margin:1.1em 0;padding-left:1.6em;}
.post-content ul{list-style:disc;}
.post-content ol{list-style:decimal;}
.post-content li{margin:.45em 0;}
.post-content li::marker{color:var(--green);}
.post-content blockquote{
  margin:1.6em 0;padding:18px 24px;
  border-left:3px solid var(--green);
  border-radius:0 14px 14px 0;
  background:var(--glass);
  color:var(--sub);font-style:italic;
}
.post-content blockquote p{margin:.4em 0;}
.post-content code{
  font-family:var(--mono);font-size:.88em;
  background:rgba(125,217,166,0.10);color:#A9E8C6;
  padding:2px 7px;border-radius:6px;
}
.post-content pre{
  margin:1.6em 0;padding:22px 24px;overflow:auto;
  background:#0A1712;
  border:1px solid var(--glass-border-soft);
  border-radius:14px;
  line-height:1.7;
}
.post-content pre code{background:none;color:#C7E3D2;padding:0;font-size:13.5px;}
.post-content img{
  display:block;margin:1.8em auto;max-width:100%;
  border-radius:14px;border:1px solid var(--glass-border-soft);
}
.post-content hr{border:none;height:1px;background:var(--glass-border);margin:2.4em 0;}
.post-content table{
  width:100%;margin:1.6em 0;border-collapse:collapse;
  border:1px solid var(--glass-border-soft);border-radius:14px;overflow:hidden;
  font-size:15px;
}
.post-content th,.post-content td{padding:11px 16px;border:1px solid var(--glass-border-soft);text-align:left;}
.post-content th{background:var(--glass);color:var(--text);font-weight:500;}
.post-content td{color:var(--para);}
.post-content iframe{width:100%;border-radius:14px;border:1px solid var(--glass-border-soft);margin:1.8em 0;}

/* 文章标签行 / 上下篇 */
.post-tags-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;align-items:center;}
.post-tags-row .label{font-size:13px;color:var(--muted);margin-right:4px;}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:40px;}
.post-nav-card{
  display:flex;flex-direction:column;gap:8px;padding:22px 26px;
  background:var(--glass-2);border:1px solid var(--glass-border-soft);
  border-radius:var(--radius-item);
  transition:transform .3s ease,border-color .3s ease;
}
.post-nav-card:hover{transform:translateY(-4px);border-color:var(--green-stroke);}
.post-nav-card .hint{font-size:12px;color:var(--muted);}
.post-nav-card .ttl{font-family:var(--serif);font-size:16px;color:var(--text);}
.post-nav-card.next{text-align:right;align-items:flex-end;}

/* 作者信息条 */
.author-bar{
  display:flex;align-items:center;gap:16px;margin-top:36px;
  padding:22px 26px;border-radius:var(--radius-item);
  background:var(--glass);border:1px solid var(--glass-border-soft);
}
.author-bar .avatar{width:52px;height:52px;border-radius:9999px;object-fit:cover;border:1px solid var(--green-stroke);}
.author-bar .avatar-badge{
  width:52px;height:52px;border-radius:9999px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:var(--glass);border:1px solid var(--green-stroke);
}
.author-bar .avatar-badge img{width:24px;height:24px;}
.author-bar .info{display:flex;flex-direction:column;gap:4px;}
.author-bar .nm{font-family:var(--serif);font-size:16px;color:var(--text);font-weight:400;}
.author-bar .bio{font-size:13px;color:var(--muted);}

/* ============================ 归档时间线 ============================ */
.archive-year{
  font-family:var(--serif-en);font-style:italic;
  font-size:26px;color:var(--green);
  margin:52px 0 20px;display:flex;align-items:center;gap:16px;
}
.archive-year::after{content:"";flex:1;height:1px;background:var(--glass-border-soft);}
.archive-year:first-child{margin-top:0;}

/* ============================ 关于页 ============================ */
.about-hero{padding:100px 0 30px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:16px;}
.about-hero .title{font-family:var(--serif);font-weight:300;font-size:clamp(30px,4vw,44px);color:var(--text);}
.portrait{
  width:220px;height:220px;border-radius:9999px;margin:34px auto 0;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  background:var(--glass);
  border:1px solid color-mix(in srgb,var(--green) 30%,transparent);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 16px 40px rgba(0,0,0,0.25);
  overflow:hidden;
}
.portrait img.badge{width:64px;height:64px;display:block;}
.portrait img.photo{width:100%;height:100%;object-fit:cover;}
.portrait .cap{font-weight:300;font-size:12px;color:var(--sub);padding:0 16px;text-align:center;}
.about-content{max-width:760px;margin:48px auto 0;}

/* ============================ 分页 ============================ */
.pagination{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:48px;flex-wrap:wrap;}
.page-btn{
  display:flex;align-items:center;height:40px;padding:0 20px;border-radius:9999px;
  background:var(--glass);border:1px solid var(--green-stroke);
  color:var(--light);font-size:14px;
  transition:border-color .3s ease,background .3s ease;
}
.page-btn:hover{border-color:var(--green-stroke-strong);background:color-mix(in srgb,var(--green) 8%,transparent);}
.page-btn.disabled{opacity:.35;pointer-events:none;}
.page-info{font-family:var(--serif-en);font-style:italic;font-size:14px;color:var(--muted);}

/* ============================ FOOTER ============================ */
.footer{
  position:relative;margin-top:100px;
  display:flex;flex-direction:column;align-items:center;gap:36px;
  padding:80px 24px 40px;
  background:linear-gradient(180deg,transparent 0%,var(--bg-bottom) 30%);
  overflow:hidden;
}
.footer .watermark{
  position:absolute;top:20px;left:50%;transform:translateX(-50%);
  font-family:var(--serif);font-weight:300;font-size:clamp(90px,16vw,220px);line-height:1;
  color:rgba(234,243,236,0.035);white-space:nowrap;z-index:0;pointer-events:none;user-select:none;
}
.footer .content-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:32px;width:100%;}
.footer .top-line{width:100%;max-width:var(--container);height:1px;background:var(--glass-border-soft);}
.footer-head{display:flex;flex-direction:column;align-items:center;gap:12px;}
.footer-head .name{font-family:var(--serif);font-weight:300;font-size:clamp(34px,4vw,52px);color:var(--text);}
.footer-head .tag{font-weight:300;font-size:16px;color:var(--sub);}
.contact-row{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;}
.contact-pill{
  display:flex;align-items:center;height:40px;padding:0 20px;border-radius:9999px;
  background:var(--glass);border:1px solid var(--green-stroke);
  color:var(--light);font-size:14px;
  transition:border-color .3s ease,background .3s ease;
}
.contact-pill:hover{border-color:var(--green-stroke-strong);background:color-mix(in srgb,var(--green) 8%,transparent);}
.bottom-bar{
  width:100%;max-width:var(--container);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.bottom-bar span,.bottom-bar a{font-weight:300;font-size:13px;color:var(--muted);}
.bottom-bar a:hover{color:var(--green);}

/* ============================ 返回顶部 ============================ */
.to-top{
  position:fixed;right:28px;bottom:28px;z-index:60;
  display:flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:9999px;border:1px solid var(--green-stroke);
  background:rgba(14,31,23,0.72);color:var(--green);cursor:pointer;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  box-shadow:0 10px 26px rgba(0,0,0,0.35);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .35s ease,transform .35s cubic-bezier(.16,1,.3,1),visibility .35s,border-color .3s ease,background .3s ease;
}
.to-top.show{opacity:1;visibility:visible;transform:none;}
.to-top:hover{border-color:var(--green-stroke-strong);background:color-mix(in srgb,var(--green) 14%,transparent);}
.to-top:focus-visible{outline:2px solid var(--green-stroke-strong);outline-offset:2px;}
.to-top svg{width:18px;height:18px;display:block;}

/* ============================ 空状态 / 错误页 ============================ */
.empty-tip{
  padding:60px 20px;text-align:center;
  font-size:15px;color:var(--muted);
  background:var(--glass-2);border:1px dashed var(--glass-border);
  border-radius:var(--radius-item);
}
.error-wrap{display:flex;flex-direction:column;align-items:center;gap:24px;padding:140px 24px;text-align:center;}
.error-wrap .code{
  font-family:var(--serif-en);font-style:italic;
  font-size:clamp(80px,14vw,150px);line-height:1;color:var(--green);
  text-shadow:0 0 60px var(--green-shadow);
}
.error-wrap .msg{font-family:var(--serif);font-weight:300;font-size:clamp(22px,3vw,32px);color:var(--text);}
.error-wrap .hint{font-size:15px;color:var(--sub);max-width:480px;line-height:180%;}

/* ============================ 评论区 ============================ */
.comment-panel{margin-top:48px;}
.comment-panel .panel-title{
  display:flex;align-items:center;gap:12px;margin-bottom:20px;
  font-family:var(--serif);font-weight:400;font-size:22px;color:var(--text);
}
.comment-panel .panel-title::before{content:"";width:6px;height:20px;border-radius:4px;background:var(--green);}

/* ============================ 滚动显现 ============================ */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s cubic-bezier(.16,1,.3,1);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ============================ 响应式 ============================ */
@media (max-width:1024px){
  .card-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:860px){
  .nav{gap:14px;}
  .nav-center{
    position:fixed;top:var(--nav-h);left:0;right:0;z-index:49;
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(9,18,14,0.92);
    border-bottom:1px solid var(--glass-border-soft);
    backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    padding:10px 24px 16px;
    display:none;
  }
  .nav-open .nav-center{display:flex;}
  .nav-center a{padding:13px 4px;border-bottom:1px solid rgba(255,255,255,0.05);font-size:16px;}
  .nav-center a.active{border-bottom-color:rgba(255,255,255,0.05);color:var(--green);}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .logo .brand .sub{display:none;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-card.next{text-align:left;align-items:flex-start;}
}
@media (max-width:640px){
  .card-grid{grid-template-columns:1fr;}
  .hero{padding:80px 20px 60px;gap:22px;}
  .section{padding:56px 0;}
  .post-item{padding:20px 22px;}
  .post-item-head{flex-direction:column;gap:6px;}
  .post-featured{padding:26px 24px 22px;}
  .hero-img{aspect-ratio:2.4/1;border-radius:16px;}
  .footer{margin-top:64px;padding-top:60px;}
  .to-top{right:16px;bottom:16px;width:42px;height:42px;}
}