/* Flower Stream · 花溪 Theme ─── 仅兼容 Chrome / Firefox / Edge 最新版 */
:root {
  --accent:  #6e8b6e;
  --accent-h:#527052;
  --pale:    #eef3ee;
  --bg:      #f9f8f5;
  --sur:     #f1ece5;
  --bd:      #e2d8cd;
  --ink:     #242018;
  --ink2:    #7a7060;
  --ink3:    #b8aca0;
  --r:       4px;
  --hh:      52px;
  --w:       672px;
  --ease:    .2s ease;
}

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;text-size-adjust:100%}
body{
  font:16px/1.9 -apple-system,BlinkMacSystemFont,'Segoe UI',
    'PingFang SC','Hiragino Sans GB','Microsoft YaHei',
    'Noto Serif SC',Georgia,serif;
  color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased   /* macOS 字体渲染，保留 */
}
a{color:var(--accent);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--accent-h)}
img{max-width:100%;height:auto;display:block}

/* ── Layout ── */
.wrap{width:100%;max-width:var(--w);margin:0 auto;padding:0 22px}
#main{padding-top:calc(var(--hh) + 50px);padding-bottom:88px;min-height:80vh}

/* ── Header ── */
#hd{
  position:fixed;top:0;left:0;right:0;height:var(--hh);
  background:rgba(249,248,245,.93);
  backdrop-filter:blur(12px);          /* 现代浏览器无需 -webkit- 前缀 */
  border-bottom:1px solid var(--bd);z-index:100;
  transition:transform .28s ease;will-change:transform
}
#hd.hide{transform:translateY(-100%)}
.hd-inner{display:flex;align-items:center;gap:12px;height:100%}

.brand{
  font-size:1.05rem;font-weight:700;color:var(--ink);
  letter-spacing:.5px;white-space:nowrap;
  padding-bottom:1px;position:relative
}
.brand::after{
  content:'';position:absolute;bottom:0;left:0;right:0;
  height:1px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .3s ease
}
.brand:hover{color:var(--ink)}
.brand:hover::after{transform:scaleX(1)}

.tagline{font-size:.75rem;color:var(--ink3);font-style:italic;white-space:nowrap}

#nav{display:flex;align-items:center;gap:2px;margin-left:auto}
#nav a{
  padding:4px 9px;font-size:.85rem;color:var(--ink2);
  border-radius:var(--r);transition:color var(--ease),background var(--ease)
}
#nav a:hover{color:var(--accent);background:var(--pale)}

.nav-search input{
  border:1px solid var(--bd);border-radius:16px;
  padding:3px 11px;font-size:.8rem;width:96px;
  background:var(--sur);color:var(--ink);font-family:inherit;
  outline:none;transition:width var(--ease),border-color var(--ease)
}
.nav-search input:focus{width:144px;border-color:var(--accent)}

.nav-btn{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;cursor:pointer;padding:4px;margin-left:auto
}
.nav-btn span{display:block;width:20px;height:1.5px;background:var(--ink2);border-radius:2px}

@media(max-width:580px){
  .nav-btn{display:flex}
  .tagline{display:none}
  #nav{
    display:none;position:absolute;top:var(--hh);left:0;right:0;
    background:var(--bg);border-bottom:1px solid var(--bd);
    flex-direction:column;align-items:flex-start;
    padding:8px 22px 14px;
    box-shadow:0 8px 24px rgba(0,0,0,.06)
  }
  #nav.open{display:flex}
  #nav a{width:100%;padding:9px 0;border-radius:0;border-bottom:1px solid var(--bd)}
  #nav a:last-of-type{border:none}
  .nav-search{width:100%;padding:10px 0 2px}
  .nav-search input{width:100%!important}
}

/* ── Post List ── */
#post-list{display:flex;flex-direction:column}

.post-card{
  padding:38px 0;border-bottom:1px solid var(--bd);
  transition:opacity .4s,transform .4s
}
.post-card:first-child{padding-top:0}
.post-card:last-child{border-bottom:none}
.post-card.entering{opacity:0;transform:translateY(10px)}

.post-thumb{display:block;margin-bottom:18px;border-radius:var(--r);overflow:hidden}
.post-thumb img{
  width:100%;max-height:252px;object-fit:cover;
  filter:saturate(.88);transition:transform .5s ease,filter .5s ease
}
.post-thumb:hover img{transform:scale(1.02);filter:saturate(1)}

.post-title{font-size:1.12rem;font-weight:700;line-height:1.5;margin-bottom:7px}
.post-title a{color:var(--ink)}
.post-title a:hover{color:var(--accent)}

.post-meta{
  font-size:.76rem;color:var(--ink3);margin-bottom:12px;
  display:flex;flex-wrap:wrap;align-items:center;gap:5px;letter-spacing:.3px
}
.post-meta a{color:var(--ink3)}
.post-meta a:hover{color:var(--accent)}

.post-excerpt{
  font-size:.9rem;color:var(--ink2);line-height:1.82;
  overflow:hidden;display:-webkit-box;  /* line-clamp 目前仍需 -webkit- 写法 */
  -webkit-line-clamp:3;-webkit-box-orient:vertical
}

/* ── Infinite scroll ── */
#load-status{
  text-align:center;padding:36px 0 4px;
  font-size:.78rem;color:var(--ink3);letter-spacing:.8px
}
.spinner{
  display:inline-block;width:15px;height:15px;
  border:1.5px solid var(--bd);border-top-color:var(--accent);
  border-radius:50%;animation:spin .8s linear infinite;
  vertical-align:middle;margin-right:5px
}
@keyframes spin{to{transform:rotate(360deg)}}
.end-line{font-style:italic}
.page-navigator{display:none!important}

/* ── Single Post ── */
.post-single{margin-bottom:60px}
.post-hd{margin-bottom:34px;padding-bottom:22px;border-bottom:1px solid var(--bd)}
.post-single .post-title{font-size:1.6rem;line-height:1.38;margin-bottom:12px;letter-spacing:-.1px}

.post-content{font-size:.96rem;line-height:1.95;color:#272018}
.post-content h2,.post-content h3,.post-content h4{margin:1.8em 0 .65em;line-height:1.4;font-weight:700}
.post-content h2{font-size:1.2rem;border-bottom:1px solid var(--bd);padding-bottom:6px}
.post-content h3{font-size:1.06rem}
.post-content p{margin-bottom:1.1em}
.post-content ul,.post-content ol{padding-left:1.5em;margin-bottom:1em}
.post-content li{margin-bottom:.4em}
.post-content blockquote{
  border-left:2px solid var(--accent);margin:1.4em 0;
  padding:.55em 1.1em;color:var(--ink2);
  background:var(--pale);border-radius:0 var(--r) var(--r) 0;font-style:italic
}
.post-content code{
  font-family:'JetBrains Mono','Fira Code',Consolas,monospace;
  font-size:.84em;background:var(--sur);
  border:1px solid var(--bd);border-radius:3px;padding:1px 5px
}
.post-content pre{
  background:#1a1814;color:#e4dbd0;
  border-radius:var(--r);padding:18px;overflow-x:auto;
  margin-bottom:1.3em;font-size:.85em;line-height:1.65
}
.post-content pre code{background:none;border:none;padding:0;color:inherit}
.post-content img{border-radius:var(--r);margin:1.2em auto}
.post-content a{
  text-decoration:underline;
  text-decoration-color:color-mix(in srgb,var(--accent) 40%,transparent); /* Chrome 111+ / Firefox 113+ / Edge 111+ */
  text-underline-offset:2px
}
.post-content a:hover{text-decoration-color:var(--accent)}
.post-content hr{border:none;border-top:1px solid var(--bd);margin:2em 0}
.post-content table{width:100%;border-collapse:collapse;margin-bottom:1.2em;font-size:.88em}
.post-content th,.post-content td{border:1px solid var(--bd);padding:7px 11px}
.post-content th{background:var(--sur);font-weight:700}
.post-content tr:nth-child(even) td{background:#faf7f3}

/* ── Comments ── */
.comments-wrap{margin-top:54px;padding-top:36px;border-top:1px solid var(--bd)}
.sec-title{font-size:.88rem;font-weight:700;color:var(--ink3);margin-bottom:26px;letter-spacing:.7px}

.comments-list{list-style:none;display:flex;flex-direction:column;gap:24px;margin-bottom:42px}
.comment-item{display:flex;gap:12px}
.c-avatar img{width:34px;height:34px;border-radius:50%;flex-shrink:0;filter:saturate(.7)}
.c-body{flex:1;min-width:0}
.c-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:5px;font-size:.76rem;color:var(--ink3)}
.c-name{font-weight:700;color:var(--ink2);font-size:.8rem}
.c-reply{margin-left:auto;font-size:.72rem;cursor:pointer;color:var(--ink3)}
.c-reply:hover{color:var(--accent)}
.c-text{font-size:.9rem;line-height:1.78}
.by-author .c-name::after{
  content:'作者';font-size:.62rem;font-weight:400;
  background:var(--accent);color:#fff;
  padding:1px 4px;border-radius:2px;margin-left:5px;vertical-align:middle
}

/* Comment form */
#respond{margin-top:4px}
.c-msg{
  font-size:.82rem;border-radius:var(--r);
  padding:9px 13px;margin-bottom:13px;display:none
}
.c-msg.ok{display:block;background:#f0f5f0;color:#3a6a3a;border:1px solid #b8d4b8}
.c-msg.err{display:block;background:#f7f0f0;color:#7a3232;border:1px solid #d8b8b8}

.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.form-row .span2{grid-column:1/-1}
@media(max-width:440px){.form-row{grid-template-columns:1fr}}

#comment-form input[type=text],
#comment-form input[type=email],
#comment-form input[type=url],
#comment-form textarea{
  width:100%;border:1px solid var(--bd);border-radius:var(--r);
  padding:9px 11px;font-size:.88rem;font-family:inherit;
  outline:none;background:var(--bg);color:var(--ink);
  transition:border-color var(--ease),background var(--ease)
}
#comment-form input:focus,#comment-form textarea:focus{border-color:var(--accent);background:#fff}
#comment-form textarea{resize:vertical;margin-bottom:10px;min-height:100px}

.form-footer{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
#reply-to{font-size:.76rem;color:var(--ink3);flex:1;font-style:italic}
#c-submit{
  background:var(--accent);color:#fff;border:none;
  border-radius:var(--r);padding:8px 20px;
  font-size:.86rem;font-weight:700;font-family:inherit;
  cursor:pointer;letter-spacing:.3px;transition:background var(--ease),transform .1s
}
#c-submit:hover{background:var(--accent-h)}
#c-submit:active{transform:scale(.97)}
#c-submit:disabled{opacity:.5;cursor:not-allowed;transform:none}
.c-closed{color:var(--ink3);font-style:italic;font-size:.86rem}

/* ── Footer ── */
#ft{border-top:1px solid var(--bd);padding:28px 0}
.ft-inner{text-align:center;font-size:.76rem;color:var(--ink3);letter-spacing:.3px}
.ft-inner a{color:var(--ink3)}
.ft-inner a:hover{color:var(--accent)}
.ft-inner p+p{margin-top:5px}

/* ── Back to top ── */
#top-btn{
  position:fixed;bottom:26px;right:22px;
  width:34px;height:34px;background:var(--sur);color:var(--ink2);
  border:1px solid var(--bd);border-radius:50%;font-size:.82rem;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(8px);pointer-events:none;z-index:90;
  transition:opacity .25s,transform .25s,background var(--ease),color var(--ease),border-color var(--ease)
}
#top-btn.show{opacity:1;transform:none;pointer-events:auto}
#top-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ── 404 ── */
.err404{text-align:center;padding:96px 0}
.err404 h1{font-size:5rem;color:var(--bd);font-weight:900;line-height:1;margin-bottom:14px}
.err404 p{color:var(--ink2);margin-bottom:22px;font-style:italic}

@media(max-width:460px){
  .post-title{font-size:1rem}
  .post-single .post-title{font-size:1.3rem}
  #top-btn{bottom:16px;right:14px}
}

/* honeypot：绝对定位移出视口，对人类不可见，机器人能扫到 */
.hp-field{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}

/* 取消回复链接 */
#cancel-reply{font-size:.73rem;color:var(--ink3);text-decoration:underline;cursor:pointer}
#cancel-reply:hover{color:var(--accent)}