/* 红签 RedFeed · 小红书式瀑布流 */
:root{
  --bg:#f5f5f7; --card:#ffffff; --ink:#222; --ink2:#777; --line:#ececec;
  --red:#ff2442; --shadow:0 1px 4px rgba(0,0,0,.06);
}
@media (prefers-color-scheme: dark){
  :root{ --bg:#111214; --card:#1c1d21; --ink:#e8e8ea; --ink2:#9a9aa2; --line:#2a2b30; --shadow:0 1px 6px rgba(0,0,0,.4); }
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;}

/* ---- 顶栏 ---- */
.topbar{position:sticky;top:0;z-index:30;background:color-mix(in srgb, var(--bg) 88%, transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;gap:12px;max-width:1400px;margin:0 auto;padding:10px 16px 6px}
.logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--ink);flex:none}
.logo-badge{width:32px;height:32px;border-radius:9px;background:var(--red);color:#fff;font-weight:800;display:grid;place-items:center;font-size:17px}
.logo-text{font-weight:800;font-size:18px;letter-spacing:.5px}
.logo-text small{font-weight:500;color:var(--ink2);font-size:11px;margin-left:2px}
.search-wrap{flex:1;max-width:520px}
#search{width:100%;border:none;background:color-mix(in srgb, var(--ink) 6%, var(--bg));border-radius:99px;padding:9px 16px;font-size:14px;color:var(--ink);outline:none}
#search:focus{box-shadow:0 0 0 2px color-mix(in srgb, var(--red) 45%, transparent)}
.status{flex:none;font-size:12px;color:var(--ink2);white-space:nowrap}
.status b{color:#18a058}
.chips{display:flex;gap:8px;overflow-x:auto;padding:8px 16px 10px;max-width:1400px;margin:0 auto;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;border:none;background:color-mix(in srgb, var(--ink) 6%, var(--bg));color:var(--ink);border-radius:99px;padding:7px 15px;font-size:14px;cursor:pointer;transition:.15s}
.chip:hover{background:color-mix(in srgb, var(--ink) 12%, var(--bg))}
.chip.on{background:var(--red);color:#fff;font-weight:600}

/* ---- 瀑布流 ---- */
main{max-width:1400px;margin:0 auto;padding:14px 12px 40px}
.masonry{column-count:5;column-gap:12px}
@media (max-width:1250px){.masonry{column-count:4}}
@media (max-width:980px){.masonry{column-count:3}}
@media (max-width:700px){.masonry{column-count:2;column-gap:8px}}
.card{break-inside:avoid;margin:0 0 12px;background:var(--card);border-radius:14px;overflow:hidden;box-shadow:var(--shadow);cursor:pointer;transition:transform .18s ease, box-shadow .18s ease;position:relative}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.card .cover{display:block;width:100%;line-height:0}
.card .cover svg{width:100%;height:auto;display:block}
.card .stale{position:absolute;top:8px;left:8px;background:rgba(0,0,0,.45);color:#ffd;font-size:10px;padding:2px 7px;border-radius:99px}
.card .ctitle{font-size:14px;font-weight:600;line-height:1.45;padding:9px 11px 4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .cfoot{display:flex;align-items:center;gap:6px;padding:2px 11px 10px;font-size:12px;color:var(--ink2)}
.card .avatar{width:18px;height:18px;border-radius:50%;display:grid;place-items:center;font-size:11px;flex:none;background:color-mix(in srgb, var(--ink) 8%, var(--bg))}
.card .chan{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card .likes{flex:none;display:flex;align-items:center;gap:3px}
.sentinel{text-align:center;color:var(--ink2);font-size:13px;padding:26px 0 40px}
.loading-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--red);animation:pulse 1s infinite alternate;margin-right:6px}
@keyframes pulse{from{opacity:.3;transform:scale(.8)}to{opacity:1;transform:scale(1.15)}}

/* ---- 详情 ---- */
.overlay{position:fixed;inset:0;z-index:50;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(4px)}
.overlay[hidden]{display:none}
.post{background:var(--card);border-radius:18px;max-width:860px;width:100%;max-height:92vh;overflow:auto;position:relative;display:grid;grid-template-columns:minmax(0,46%) minmax(0,54%)}
@media (max-width:760px){.post{grid-template-columns:1fr;max-height:94vh}}
.close{position:sticky;float:right;top:10px;right:10px;z-index:5;border:none;background:rgba(0,0,0,.4);color:#fff;width:32px;height:32px;border-radius:50%;font-size:15px;cursor:pointer}
.post-cover{background:#000;min-height:200px;display:flex;align-items:center;justify-content:center}
.post-cover svg{width:100%;height:auto;display:block}
.post-body{padding:20px 22px 26px;min-width:0}
.post-channel{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;margin-bottom:10px}
.post-channel .avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-size:16px;background:color-mix(in srgb, var(--ink) 8%, var(--bg))}
.post-channel small{color:var(--ink2);font-weight:400}
.post h1{font-size:19px;line-height:1.45;margin-bottom:10px}
.post-text{font-size:14.5px;line-height:1.8;color:color-mix(in srgb, var(--ink) 88%, var(--ink2));white-space:pre-wrap;word-break:break-word}
.post-text a{color:#3b7cd4;text-decoration:none}
.post-tags{margin:14px 0 4px;display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:12px;color:#3b7cd4;background:color-mix(in srgb,#3b7cd4 10%, var(--card));padding:3px 10px;border-radius:99px}
.post-meta{font-size:12px;color:var(--ink2);margin:10px 0;line-height:1.7}
.post-actions{display:flex;gap:10px;margin:12px 0 4px;flex-wrap:wrap}
#cloudCanvas{width:100%;height:auto;display:block;background:#0d0d12}
.cloud-wordlist{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px}
.cloud-word{font-size:12.5px;color:var(--ink);background:color-mix(in srgb, var(--ink) 6%, var(--card));border-radius:99px;padding:4px 10px;text-decoration:none;white-space:nowrap}
.cloud-word small{opacity:.6;margin-left:3px}
.cloud-word.flash{background:var(--red);color:#fff}
.gdp-bars{margin-top:12px;display:flex;flex-direction:column;gap:7px}
.gdp-row{display:flex;align-items:center;gap:8px;font-size:13px}
.gdp-rank{flex:none;width:20px;text-align:right;color:var(--ink2);font-weight:700}
.gdp-name{flex:none;width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.gdp-bar-track{flex:1;height:14px;background:color-mix(in srgb, var(--ink) 8%, var(--card));border-radius:99px;overflow:hidden}
.gdp-bar-fill{height:100%;background:linear-gradient(90deg,#3fb950,#2ea3f2);border-radius:99px}
.gdp-val{flex:none;width:64px;text-align:right;color:var(--ink2);font-variant-numeric:tabular-nums}
.btn{border:none;border-radius:99px;padding:9px 18px;font-size:14px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.btn.primary{background:var(--red);color:#fff;font-weight:600}
.btn.ghost{background:color-mix(in srgb, var(--ink) 7%, var(--card));color:var(--ink)}
.related-h{font-size:14px;color:var(--ink2);margin:18px 0 8px;font-weight:600}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.rcard{border-radius:10px;overflow:hidden;cursor:pointer;background:color-mix(in srgb, var(--ink) 4%, var(--card))}
.rcard svg{width:100%;height:auto;display:block}
.rcard .rt{font-size:11px;padding:6px 7px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--ink)}

.pagefoot{max-width:1400px;margin:0 auto;padding:18px 16px 46px;font-size:12px;color:var(--ink2);line-height:1.8;border-top:1px solid var(--line)}