*{box-sizing:border-box;margin:0;padding:0}
:root{
--bg:#f7f6f2;--surface:#ffffff;--fg:#1c1a17;--muted:#6f6a61;--line:#e9e5dc;
--accent:#0d9488;--accent-soft:rgba(13,148,136,.09);--accent-ink:#0b7c72;
--accent-grad:linear-gradient(120deg,#0d9488,#14b8a6);
--inline-code:#f0ede6;--shadow:0 1px 3px rgba(60,50,30,.07);
--shadow-hover:0 14px 34px rgba(13,148,136,.13);
--radius:18px;
}
@media(prefers-color-scheme:dark){
:root{
--bg:#0e1116;--surface:#151b23;--fg:#e8eaed;--muted:#9aa1ad;--line:#242c37;
--accent:#2dd4bf;--accent-soft:rgba(45,212,191,.12);--accent-ink:#5eead4;
--accent-grad:linear-gradient(120deg,#2dd4bf,#14b8a6);
--inline-code:#232c38;--shadow:0 1px 3px rgba(0,0,0,.35);
--shadow-hover:0 14px 34px rgba(45,212,191,.12);
}}
html{scroll-behavior:smooth}
::selection{background:var(--accent);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:var(--muted)}
body{background:var(--bg);color:var(--fg);
font:17px/1.9 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",sans-serif;
-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::before{content:"";display:block;height:3px;background:var(--accent-grad)}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap{max-width:880px;margin:0 auto;padding:0 22px}
.site-header{padding:46px 0 8px;display:flex;align-items:center;justify-content:space-between;gap:20px 32px;flex-wrap:wrap}
.brand h1{font-size:35px;font-weight:800;letter-spacing:.5px;text-wrap:balance}
.brand h1 a{color:var(--fg);text-decoration:none;transition:opacity .15s}
.brand h1 a{display:flex;align-items:center;gap:13px}
.brand .logo{width:46px;height:46px;border-radius:12px;flex:none;
box-shadow:0 0 0 3px rgba(13,148,136,.16),0 6px 20px rgba(13,148,136,.28)}
.brand h1 a:hover{opacity:.82}
.brand h1 a .dot{color:var(--accent)}
.tagline{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.tagline span{font-size:12.5px;font-weight:600;letter-spacing:1px;padding:5px 15px;border-radius:999px;
background:var(--accent-soft);color:var(--accent-ink)}
.brand .grad{background:linear-gradient(120deg,#0d9488,#2dd4bf);-webkit-background-clip:text;
background-clip:text;color:transparent}
.nav{display:flex;gap:10px;margin-top:0;flex-wrap:wrap;justify-content:flex-end}
.nav a{padding:8px 20px;border:1px solid var(--line);border-radius:999px;font-size:14px;
color:var(--fg);background:var(--surface);text-decoration:none;box-shadow:var(--shadow);
transition:transform .15s,border-color .15s,color .15s,box-shadow .15s}
.nav a:hover{border-color:var(--accent);color:var(--accent-ink);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
main{padding:10px 0 24px}
.hero{padding:40px 0 8px}
.hero h2{font-size:26px;font-weight:800;letter-spacing:.5px;text-wrap:balance}
.hero h2 .n{background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);font-size:14.5px;margin-top:8px}
.hero-banner{background:linear-gradient(135deg,#0b2530 0%,#0e3a44 55%,#0d9488 135%);border-radius:20px;
padding:24px 28px;margin:22px 0 10px;color:#eaf6f4;box-shadow:var(--shadow-hover);position:relative;overflow:hidden}
.hero-banner::after{content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;border-radius:50%;
background:radial-gradient(circle,rgba(94,234,212,.30),transparent 70%);pointer-events:none}
.hero-banner h2{font-size:24px;font-weight:800;letter-spacing:.5px;margin:0;position:relative;z-index:1}
.hero-top{display:flex;align-items:center;justify-content:space-between;gap:20px;position:relative;z-index:1}
.hero-banner .sub{color:#bfe3dd;font-size:14px;margin:6px 0 0;position:relative;z-index:1}
.hero-side{flex:1;max-width:400px;min-width:240px;position:relative;z-index:1}
.hero-search{display:flex;gap:10px;margin-top:0;position:relative;z-index:1}
.hero-search input{flex:1;min-width:0;padding:12px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.25);
background:rgba(255,255,255,.12);color:#fff;font-size:16px;outline:none}
.hero-search input::placeholder{color:#9fd0c9}
.hero-search input:focus{border-color:#5eead4;background:rgba(255,255,255,.18)}
.hero-search button{padding:12px 26px;border-radius:999px;border:none;background:#5eead4;color:#0b2530;
font-weight:700;font-size:14.5px;cursor:pointer;flex:none}
.hero-search button:hover{background:#99f6e4}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:14px;font-size:13.5px;color:#bfe3dd;
position:relative;z-index:1;align-items:center}
.hero-meta b{color:#fff;font-size:16px;margin-right:2px}
.hero-meta a{color:#5eead4;text-decoration:none;font-weight:600}
.hero-topics{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;position:relative;z-index:1}
.hero-topics a{padding:6px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.28);
color:#eaf6f4;font-size:13px;text-decoration:none}
.hero-topics a:hover{background:rgba(255,255,255,.14)}
.rv{opacity:0}
.rv.in{animation:rvIn .55s ease both}
@keyframes rvIn{from{opacity:0;transform:translateY(16px)}to{opacity:1}}
.hero-banner{animation:heroIn .7s cubic-bezier(.2,.7,.3,1) backwards}
@keyframes heroIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.hero-banner::after{animation:glowDrift 9s ease-in-out infinite}
@keyframes glowDrift{0%,100%{transform:translate(0,0)}50%{transform:translate(-46px,34px)}}
.brand .logo{animation:logoBreathe 3.8s ease-in-out infinite}
@keyframes logoBreathe{0%,100%{box-shadow:0 0 0 3px rgba(13,148,136,.16),0 6px 20px rgba(13,148,136,.28)}50%{box-shadow:0 0 0 6px rgba(13,148,136,.20),0 6px 28px rgba(13,148,136,.42)}}
.copybtn{position:absolute;top:11px;right:12px;z-index:2;font-size:12px;padding:5px 14px;border-radius:8px;
border:1px solid rgba(255,255,255,.20);background:rgba(255,255,255,.07);color:#cbd5e1;cursor:pointer;transition:all .15s}
.copybtn:hover{background:rgba(255,255,255,.16);color:#fff}
.copybtn.ok{color:#5eead4;border-color:rgba(94,234,212,.55)}
.home-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:30px;align-items:start}
.sidebar{position:sticky;top:18px;display:flex;flex-direction:column;gap:18px;min-width:0}
.side-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
padding:20px 20px 22px;box-shadow:var(--shadow)}
.side-block h3{font-size:15px;margin:0 0 12px;font-weight:700}
.side-tools{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.side-tools a{color:var(--fg);text-decoration:none;font-size:14px;display:flex;justify-content:space-between;
align-items:center;padding:7px 4px;border-bottom:1px dashed var(--line)}
.side-tools li:last-child a{border-bottom:none}
.side-tools a:hover{color:var(--accent-ink)}
.side-tools a span{color:var(--muted)}
.side-unlock{background:linear-gradient(135deg,#0b2530,#0e3a44 80%);border:none;color:#eaf6f4}
.side-unlock h3{color:#fff}
.side-unlock p{font-size:13px;color:#bfe3dd;margin:0 0 14px;line-height:1.7}
.side-unlock a.cta{display:inline-block;padding:8px 22px;border-radius:999px;background:#5eead4;
color:#0b2530;font-size:13.5px;font-weight:700;text-decoration:none}
.side-unlock a.cta:hover{background:#99f6e4}
.topics{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 8px}
.topics span{font-size:13px;padding:6px 15px;border-radius:999px;background:var(--accent-soft);
color:var(--accent-ink);font-weight:600;border:1px solid transparent}
.cards{padding:16px 0}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
padding:28px 30px;margin:0 0 20px;box-shadow:var(--shadow);
transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent)}
.card{position:relative;display:grid;gap:14px;align-content:start}
.card.with-thumb{gap:18px 24px}
.card-head{position:relative;min-width:0}
.card-body{min-width:0}
.card .date{font-size:12.5px;color:var(--muted);letter-spacing:1px;display:flex;align-items:center;justify-content:flex-end;gap:8px;margin-bottom:6px}
.card .date::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent-grad);flex:none}
.card-head h3{text-align:left;font-size:22px;margin:0;line-height:1.55;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-head h3 a{color:var(--fg);text-decoration:none;background-image:linear-gradient(var(--accent),var(--accent));
background-size:0% 2px;background-repeat:no-repeat;background-position:left 96%;
transition:background-size .25s ease,color .15s;padding-bottom:2px}
.card-head h3 a:hover{color:var(--accent-ink);background-size:100% 2px}
.card .desc{color:var(--muted);font-size:15px;margin-top:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .foot{margin-top:18px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{font-size:12.5px;padding:4px 13px;border-radius:999px;background:var(--accent-soft);
color:var(--accent-ink);font-weight:600}
.readmore{display:block;text-align:center;padding:10px 0 2px;font-size:14px;
color:var(--accent-ink);text-decoration:none;font-weight:700}
.readmore:hover{text-decoration:underline}
.crumb{font-size:14px;margin:28px 0 8px}
.crumb a{color:var(--muted);text-decoration:none;transition:color .15s}
.crumb a:hover{color:var(--accent-ink)}
.post-head{padding:12px 0 8px}
.post-head h1{font-size:32px;line-height:1.5;font-weight:800;margin-bottom:16px;letter-spacing:.5px}
.post-head .meta{display:flex;gap:14px;align-items:center;color:var(--muted);
font-size:14px;flex-wrap:wrap;margin-bottom:12px}
.post-head .meta time{letter-spacing:1px}
.prose{font-size:17px}
.prose p{margin:17px 0}
.prose h2{font-size:22px;margin:42px 0 16px;line-height:1.5;font-weight:800;
display:flex;align-items:center;gap:12px;text-wrap:balance}
.prose h2::before{content:"";flex:none;width:5px;align-self:stretch;min-height:1.4em;border-radius:3px;background:var(--accent-grad)}
.prose h2[id],.prose h3[id]{scroll-margin-top:20px}
.prose h3{font-size:18.5px;margin:32px 0 12px;font-weight:700}
.prose a{color:var(--accent-ink);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px;
transition:background .15s}
.prose a:hover{background:var(--accent-soft);border-radius:4px}
.prose strong{font-weight:700}
.prose ul,.prose ol{margin:15px 0 15px 26px}
.prose li{margin:8px 0}
.prose li::marker{color:var(--accent-ink);font-weight:700}
.prose blockquote{border-left:3px solid var(--accent);background:var(--accent-soft);
padding:14px 20px;border-radius:0 12px 12px 0;margin:20px 0;color:var(--fg);font-size:16px}
.prose blockquote p{margin:8px 0}
.prose hr{border:none;border-top:1px solid var(--line);margin:38px 0}
.prose img{max-width:100%;border-radius:12px;box-shadow:var(--shadow)}
pre{position:relative;background:#10151d;color:#dbe4f0;padding:46px 20px 18px;border-radius:14px;
overflow-x:auto;margin:20px 0;font-size:13.5px;line-height:1.75;
border:1px solid rgba(255,255,255,.07);box-shadow:var(--shadow)}
pre::before{content:"";position:absolute;top:16px;left:18px;width:11px;height:11px;border-radius:50%;
background:#ff5f57;box-shadow:20px 0 0 #febc2e,40px 0 0 #28c840}
pre code{background:none!important;padding:0!important}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Noto Sans Mono",monospace}
p code,li code,td code{background:var(--inline-code);padding:2px 8px;border-radius:6px;font-size:.85em;
border:1px solid var(--line)}
table{border-collapse:separate;border-spacing:0;width:100%;margin:20px 0;font-size:14.5px;
border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow);display:block;overflow-x:auto}
th,td{padding:11px 15px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
th{background:var(--accent-soft);font-weight:700;color:var(--accent-ink)}
tr:last-child td{border-bottom:none}
tbody tr{transition:background .12s}
tbody tr:hover{background:var(--accent-soft)}
details{border:1px solid var(--line);border-radius:12px;padding:12px 18px;margin:12px 0;background:var(--surface)}
details summary{cursor:pointer;font-weight:700}
details[open] summary{margin-bottom:8px}
.post-hero{margin:22px 0 6px}
.post-hero img{width:100%;border-radius:16px;display:block;box-shadow:var(--shadow-hover)}
.card.with-thumb{display:grid;grid-template-columns:172px minmax(0,1fr);grid-template-areas:"head head" "thumb body" "more more";gap:18px 24px;align-items:center}
.card.with-thumb .card-head{grid-area:head}
.card.with-thumb .thumb{grid-area:thumb}
.card.with-thumb .card-body{grid-area:body}
.card.with-thumb .readmore{grid-area:more}
.card .thumb{overflow:hidden;border-radius:12px}
.card .thumb img{width:172px;height:114px;object-fit:cover;display:block;transition:transform .3s ease}
.card:hover .thumb img{transform:scale(1.06)}
.pagination{display:flex;gap:8px;align-items:center;justify-content:center;margin:28px 0 6px;flex-wrap:wrap}
.pagination a,.pagination .pg-cur{padding:8px 15px;border-radius:10px;border:1px solid var(--line);font-size:14px}
.pagination a{background:var(--surface);color:var(--fg);text-decoration:none}
.pagination a:hover{border-color:var(--accent);color:var(--accent-ink)}
.pagination .pg-cur{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:700}
.page-head{margin:4px 0 22px}
.page-head h1{font-size:26px;margin:0 0 6px}
.page-head p{color:var(--muted);margin:0;font-size:14px}
.pager{display:flex;gap:14px;margin:48px 0 8px}
.pager a{flex:1;background:var(--surface);border:1px solid var(--line);border-radius:14px;
padding:18px 22px;text-decoration:none;color:var(--fg);font-size:15px;box-shadow:var(--shadow);
transition:transform .15s,border-color .15s,box-shadow .15s;line-height:1.6}
.pager a:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.pager .next{text-align:right}
.pager small{display:block;color:var(--muted);font-size:12.5px;margin-bottom:6px;letter-spacing:1px}
.pager .none{visibility:hidden}
footer{border-top:1px solid var(--line);margin-top:40px;padding:30px 0 60px;color:var(--muted);font-size:13.5px}
footer .frow{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px}
footer a{color:var(--muted);text-decoration:none;margin-left:18px;transition:color .15s}
footer a:hover{color:var(--accent-ink)}
@media(max-width:900px){
.home-layout{grid-template-columns:minmax(0,1fr)}
.sidebar{position:static;display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
}
@media(max-width:640px){
.site-header{padding:36px 0 6px;flex-direction:column;align-items:flex-start;gap:16px}
.nav{justify-content:flex-start}
.brand h1{font-size:29px}
.brand .logo{width:38px;height:38px;border-radius:10px}
.hero h2{font-size:22px}
.post-head h1{font-size:25px}
.card{padding:24px 22px}
.card .thumb img{width:100%;height:auto}
.card.with-thumb{grid-template-columns:minmax(0,1fr);grid-template-areas:"head" "thumb" "body" "more";gap:16px}
.pager{flex-direction:column}
.pager .none{display:none}
.prose{font-size:16px}
.hero-banner{padding:22px 20px}
.hero-banner h2{font-size:21px}
.hero-top{flex-direction:column;align-items:stretch}
.hero-side{max-width:none}
}
@media(prefers-reduced-motion:reduce){
*{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
.rss-badge{display:inline-block;font-size:13px;font-weight:700;color:#fff;background:#e8912d;
border-radius:6px;padding:2px 10px;margin-right:10px;vertical-align:middle}
.feed-url{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13.5px;background:var(--inline-code);
border:1px solid var(--line);border-radius:8px;padding:12px 16px;word-break:break-all;margin:14px 0;color:var(--fg)}
.feed-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;
padding:20px 24px;margin-bottom:14px;box-shadow:var(--shadow)}
.feed-item h2{font-size:18px;margin-bottom:6px;line-height:1.5}
.feed-item h2 a{color:var(--fg);text-decoration:none}
.feed-item h2 a:hover{color:var(--accent-ink)}
.feed-item .d{font-size:13px;color:var(--muted);margin-bottom:6px}
.feed-item p{font-size:14.5px;color:var(--muted);margin:0}
/* ---- 在线工具 ---- */
.tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;box-shadow:var(--shadow);margin:22px 0}
.tool label{display:block;font-weight:700;margin:18px 0 8px;font-size:15px}
.tool label:first-child{margin-top:0}
.tool textarea,.tool input[type=text]{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:14.5px;color:var(--fg);font-family:inherit;transition:border-color .15s}
.tool textarea:focus,.tool input[type=text]:focus{border-color:var(--accent);outline:none}
.tool textarea{min-height:140px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.7}
.tool .row{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0 0}
.tool button{background:var(--accent-grad);color:#fff;border:none;border-radius:999px;padding:10px 26px;font-size:14.5px;font-weight:700;cursor:pointer;transition:transform .15s,box-shadow .15s}
.tool button:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.tool button.ghost{background:var(--surface);color:var(--fg);border:1px solid var(--line)}
.tool a.btn{display:inline-block;background:var(--accent-grad);color:#fff;border-radius:999px;padding:10px 26px;font-size:14.5px;font-weight:700;text-decoration:none}
.tool .out{background:#10151d;color:#dbe4f0;border-radius:12px;padding:18px 20px;margin-top:16px;font-size:13.5px;line-height:1.8;overflow-x:auto;white-space:pre-wrap;word-break:break-all;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.tool .out:empty{display:none}
.tool .kv{display:grid;grid-template-columns:130px 1fr;gap:8px 16px;margin:4px 0;font-size:14.5px}
.tool .kv dt,.tool .kv dd{margin:0;padding:0}
.tool .kv dt{color:#9aa1ad}
.tool .hint{font-size:13.5px;color:var(--muted);margin-top:12px}
.tool .err{color:#f87171}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;margin:24px 0}
.tool-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);text-decoration:none;color:var(--fg);display:block;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--accent)}
.tool-card h3{font-size:18px;margin:0 0 8px}
.tool-card p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
@media(max-width:640px){.tool{padding:22px 20px}.tool .kv{grid-template-columns:110px 1fr}}
.chips a.chip{text-decoration:none}
.ic{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}
.nav a{display:inline-flex;align-items:center;gap:7px}
.nav .ic{width:16px;height:16px}
.side-block h3{display:flex;align-items:center;gap:8px}
.side-block h3 .ic{width:17px;height:17px;color:var(--accent-ink)}
.tool-card .tic{width:44px;height:44px;border-radius:13px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.tool-card .tic .ic{width:22px;height:22px;color:var(--accent-ink)}
.topics a{text-decoration:none}