:root{
  --bg:#f6f4ee;
  --bg-soft:#efeadf;
  --card:#ffffff;
  --ink:#26312b;
  --ink-2:#5b6660;
  --ink-3:#8b958e;
  --line:#e5e0d4;
  --brand:#2e7d54;
  --brand-deep:#1f5c3c;
  --brand-soft:#e3f0e8;
  --accent:#d97b3f;
  --accent-soft:#fbeadd;
  --shadow:0 1px 2px rgba(38,49,43,.05),0 10px 30px -12px rgba(38,49,43,.14);
  --shadow-lg:0 2px 4px rgba(38,49,43,.06),0 18px 44px -16px rgba(38,49,43,.22);
  --r:16px;
  --header-h:64px;
}
html.dark{
  --bg:#161a17;
  --bg-soft:#101310;
  --card:#1f2521;
  --ink:#e8ece9;
  --ink-2:#a8b3ac;
  --ink-3:#78837c;
  --line:#2c332e;
  --brand:#57ab7f;
  --brand-deep:#79c79d;
  --brand-soft:#24352c;
  --accent:#e0925c;
  --accent-soft:#3a2b20;
  --shadow:0 1px 2px rgba(0,0,0,.35),0 10px 30px -12px rgba(0,0,0,.5);
  --shadow-lg:0 2px 4px rgba(0,0,0,.4),0 18px 44px -16px rgba(0,0,0,.6);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;overflow-x:hidden}
button{touch-action:manipulation}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",-apple-system,"Segoe UI",sans-serif;
  background:
    radial-gradient(1200px 500px at 85% -100px, rgba(217,123,63,.07), transparent 60%),
    radial-gradient(900px 420px at -80px 120px, rgba(46,125,84,.08), transparent 60%),
    var(--bg);
  color:var(--ink);
  line-height:1.65;
}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:1280px;margin:0 auto;padding:0 20px}

/* progress */
#progress{position:fixed;top:0;left:0;height:3px;width:0;background:linear-gradient(90deg,var(--brand),var(--accent));z-index:200;border-radius:0 3px 3px 0}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:var(--card);background:color-mix(in srgb,var(--card) 82%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:18px;height:var(--header-h);justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:.5px;color:var(--ink);flex-shrink:0}
.brand-title{margin:0;padding:0;font:inherit;letter-spacing:inherit;color:inherit;display:inline-block;line-height:1.2}
.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;font-size:19px;font-weight:800;box-shadow:0 6px 14px -6px rgba(46,125,84,.55)}
.brand small{font-weight:500;font-size:11px;color:var(--ink-3);letter-spacing:2px;display:block;line-height:1.2}
.main-nav{flex:1;display:flex;justify-content:center;min-width:0}
.nav-list{display:flex;list-style:none;gap:0}
.nav-item{position:relative}
.nav-item>a{display:flex;align-items:center;gap:4px;padding:8px 10px;border-radius:9px;font-size:14px;font-weight:600;color:var(--ink-2);transition:.2s;white-space:nowrap}
.nav-item>a:hover,.nav-item>a:focus-visible{color:var(--brand);background:var(--brand-soft)}
.caret{opacity:.45;transition:.2s;margin-top:2px}
.has-drop:hover .caret,.has-drop:focus-within .caret{transform:rotate(180deg)}
.dropdown{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(8px);background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);padding:10px;opacity:0;visibility:hidden;transition:.22s ease;z-index:50;width:min(560px,88vw)}
.dropdown::before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px}
.dropdown>.drop-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:2px;list-style:none;max-height:min(480px,calc(100vh - var(--header-h) - 60px));overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
.drop-grid a{display:block;padding:8px 12px;border-radius:9px;font-size:13.5px;color:var(--ink-2);white-space:nowrap;transition:.15s}
.drop-grid a:hover{background:var(--brand-soft);color:var(--brand)}
.has-drop:hover .dropdown,.has-drop:focus-within .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.has-drop:nth-last-child(-n+4) .dropdown{left:auto;right:0;transform:translateY(8px)}
.has-drop:nth-last-child(-n+4):hover .dropdown,.has-drop:nth-last-child(-n+4):focus-within .dropdown{transform:translateY(0)}

.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.icon-btn{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:var(--card);color:var(--ink-2);cursor:pointer;transition:.2s}
.icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft)}
.search-toggle{display:grid}
#nav-toggle{display:none}

/* search panel (drops below header) */
.search-panel{position:absolute;top:100%;left:0;right:0;background:var(--card);border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);padding:16px max(20px,calc((100% - 1280px)/2 + 20px));opacity:0;visibility:hidden;transform:translateY(-8px);transition:.22s ease;z-index:90}
body.search-open .search-panel{opacity:1;visibility:visible;transform:none}
.panel-search{display:flex;align-items:center;gap:10px;border:1.5px solid var(--line);border-radius:12px;padding:4px 4px 4px 14px;background:var(--bg-soft);transition:.2s}
.panel-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 15%,transparent);background:var(--card)}
.panel-search svg{flex-shrink:0;color:var(--ink-3)}
.panel-search input{flex:1;border:0;outline:0;background:transparent;padding:9px 4px;font-size:14.5px;color:var(--ink);min-width:0}
.panel-search input::placeholder{color:var(--ink-3)}
.panel-search button{border:0;background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;font-size:13.5px;font-weight:700;padding:8px 22px;border-radius:9px;cursor:pointer;transition:.2s;white-space:nowrap}
.panel-search button:hover{filter:brightness(1.08)}

/* mobile drawer */
.drawer{display:none}

/* ---------- hero ---------- */
.hero{padding:64px 0 40px;position:relative;overflow:hidden}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:700;letter-spacing:3px;padding:7px 16px;border-radius:999px;border:1px solid color-mix(in srgb,var(--brand) 22%,transparent)}
.hero h1{font-size:clamp(30px,4.6vw,46px);line-height:1.25;margin:18px 0 14px;font-weight:900;letter-spacing:1px}
.hero h1 em{font-style:normal;color:var(--brand);position:relative;white-space:nowrap;isolation:isolate}
.hero h1 em::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;background:var(--accent-soft);z-index:-1;border-radius:4px}
.hero p{max-width:640px;color:var(--ink-2);font-size:15.5px}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.stat{display:flex;align-items:baseline;gap:8px;background:var(--card);border:1px solid var(--line);padding:10px 18px;border-radius:14px;box-shadow:var(--shadow)}
.stat b{font-size:22px;font-weight:900;color:var(--brand)}
.stat span{font-size:13px;color:var(--ink-2)}
.hero-deco{position:absolute;right:-60px;top:-40px;width:340px;height:340px;border-radius:50%;background:conic-gradient(from 120deg,color-mix(in srgb,var(--brand) 16%,transparent),color-mix(in srgb,var(--accent) 16%,transparent),transparent 70%);filter:blur(2px);pointer-events:none}
.hero-deco.d2{right:120px;top:auto;bottom:-160px;width:260px;height:260px;opacity:.7}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:28px;padding-bottom:56px}
.layout>*{min-width:0}
.section-head{display:flex;align-items:center;gap:12px;margin:34px 0 18px}
.section-head:first-child{margin-top:20px}
.section-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--brand-soft);color:var(--brand);flex-shrink:0}
.section-icon.orange{background:var(--accent-soft);color:var(--accent)}
.section-head h2{font-size:21px;font-weight:800;letter-spacing:1px}
.section-head .sub{font-size:12.5px;color:var(--ink-3);margin-left:auto;letter-spacing:1px}

/* post cards */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.post-card{position:relative;display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px 18px 16px 14px;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s;overflow:hidden;animation:rise .55s ease backwards;animation-delay:var(--d,0ms)}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.post-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(var(--brand),var(--accent));opacity:0;transition:.22s}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:color-mix(in srgb,var(--brand) 35%,var(--line))}
.post-card:hover::before{opacity:1}
.post-rank{font-size:30px;font-weight:900;line-height:1;color:transparent;-webkit-text-stroke:1.3px var(--line);letter-spacing:-2px;flex-shrink:0;transition:.22s;padding-top:2px}
.post-card:hover .post-rank{-webkit-text-stroke-color:var(--brand)}
.post-body{min-width:0}
.cat-chip{display:inline-block;font-size:11px;font-weight:700;letter-spacing:1px;padding:3px 10px;border-radius:999px;margin-bottom:8px}
.c1{background:#e3f0e8;color:#2e7d54}html.dark .c1{background:#24352c;color:#79c79d}
.c2{background:#fbeadd;color:#c05f22}html.dark .c2{background:#3a2b20;color:#e0925c}
.c3{background:#e5edf8;color:#2f6bab}html.dark .c3{background:#20293a;color:#7fb0e8}
.c4{background:#f3e9f6;color:#84499c}html.dark .c4{background:#2f2337;color:#c48fd8}
.c5{background:#fdf3d8;color:#a07a10}html.dark .c5{background:#362e17;color:#dcc25e}
.c6{background:#e6f2f2;color:#22767a}html.dark .c6{background:#1d2f2f;color:#6cc3c8}
.post-title{font-size:15.5px;font-weight:700;line-height:1.5}
.post-title a{background-image:linear-gradient(var(--brand),var(--brand));background-repeat:no-repeat;background-position:0 100%;background-size:0 2px;transition:background-size .25s,padding .25s}
.post-card:hover .post-title a{background-size:100% 2px}
.post-desc{font-size:13px;color:var(--ink-3);margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.featured{grid-column:1/-1}
.featured .post-title{font-size:17.5px}
.featured .post-desc{-webkit-line-clamp:3}

/* tools showcase */
.tools-showcase{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:12px}
.tool-card{position:relative;display:flex;align-items:center;gap:12px;padding:15px 16px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);font-size:14px;font-weight:600;color:var(--ink-2);transition:transform .2s ease,box-shadow .2s ease,border-color .2s,color .2s;overflow:hidden}
.tool-card::after{content:"";position:absolute;right:-26px;top:-26px;width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,color-mix(in srgb,var(--brand) 14%,transparent),color-mix(in srgb,var(--accent) 14%,transparent));transition:.25s}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:color-mix(in srgb,var(--brand) 30%,var(--line));color:var(--ink)}
.tool-card:hover::after{width:90px;height:90px}
.tool-icon{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:var(--brand-soft);color:var(--brand);font-size:19px;font-weight:800;flex-shrink:0;transition:.2s}
.tool-card:hover .tool-icon{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;transform:scale(1.05)}
.tool-card:nth-child(6n+2) .tool-icon{background:var(--accent-soft);color:var(--accent)}
.tool-card:nth-child(6n+3) .tool-icon{background:var(--c3-bg, #e5edf8);color:#2f6bab}
.tool-card:nth-child(6n+4) .tool-icon{background:var(--c4-bg, #f3e9f6);color:#84499c}
.tool-card:nth-child(6n+5) .tool-icon{background:var(--c5-bg, #fdf3d8);color:#a07a10}
.tool-card:nth-child(6n+6) .tool-icon{background:var(--c6-bg, #e6f2f2);color:#22767a}
html.dark .tool-card:nth-child(6n+3) .tool-icon{background:#20293a;color:#7fb0e8}
html.dark .tool-card:nth-child(6n+4) .tool-icon{background:#2f2337;color:#c48fd8}
html.dark .tool-card:nth-child(6n+5) .tool-icon{background:#362e17;color:#dcc25e}
html.dark .tool-card:nth-child(6n+6) .tool-icon{background:#1d2f2f;color:#6cc3c8}

/* tools tabs */
.tool-tabs{display:flex;flex-direction:column;gap:0}
.tool-tabbar{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:6px;padding-bottom:2px}
.tool-tab{display:block;width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center;border:1px solid var(--line);background:var(--card);color:var(--ink-2);font-size:13.5px;font-weight:700;letter-spacing:.5px;padding:9px 10px;border-radius:11px;cursor:pointer;transition:.18s;font-family:inherit}
.tool-tab:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.tool-tab[aria-selected='true']{background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;border-color:transparent;box-shadow:0 6px 14px -6px color-mix(in srgb,var(--brand) 55%,transparent)}
.tab-count{display:none}
.tool-panes{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:20px;margin-top:12px}
.tool-pane{display:none}
.tool-pane.active{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:10px;animation:fadeIn .25s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.tool-pane .tool-card{padding:12px 13px;font-size:13.5px}

/* chips clouds */
.cloud{display:flex;flex-wrap:wrap;gap:9px}
.cloud.collapsed{max-height:172px;overflow:hidden;position:relative}
.cloud.collapsed::after{content:"";position:absolute;inset:auto 0 0 0;height:70px;background:linear-gradient(transparent,var(--card))}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:22px}
.cloud a{font-size:13px;color:var(--ink-2);background:var(--bg-soft);border:1px solid var(--line);padding:5px 13px;border-radius:999px;transition:.18s}
.cloud a:hover{color:#fff;background:var(--brand);border-color:var(--brand);transform:translateY(-1px)}
.more-btn{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13px;font-weight:700;color:var(--brand);background:var(--brand-soft);border:1px dashed color-mix(in srgb,var(--brand) 40%,transparent);padding:7px 18px;border-radius:999px;cursor:pointer;transition:.2s;user-select:none}
.more-btn:hover{background:var(--brand);color:#fff;border-style:solid}
.hidden-extra{display:none}

/* tags */
.tag{display:inline-flex;align-items:center;font-weight:600;border-radius:10px;padding:6px 12px;transition:.18s;border:1px solid transparent}
.t-s{font-size:12px}.t-m{font-size:13.5px}.t-l{font-size:15px}
.tag:hover{transform:translateY(-2px) rotate(-1deg);box-shadow:var(--shadow)}

/* ---------- sidebar ---------- */
.sidebar{display:flex;flex-direction:column;gap:22px;position:relative}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden}
.side-card h3{display:flex;align-items:center;gap:9px;font-size:15.5px;font-weight:800;padding:15px 20px;border-bottom:1px dashed var(--line);letter-spacing:1px}
.side-card h3::before{content:"";width:4px;height:16px;border-radius:4px;background:linear-gradient(var(--brand),var(--accent))}
.side-card .inner{padding:16px 20px 18px}
.tools-grid{display:flex;flex-wrap:wrap;gap:8px}
.tool-chip{font-size:12.5px;color:var(--ink-2);border:1px solid var(--line);background:var(--bg-soft);padding:6px 12px;border-radius:9px;transition:.18s}
.tool-chip:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-soft);transform:translateY(-1px)}
.link-list{list-style:none}
.link-list li a{display:block;position:relative;padding:8px 2px 8px 18px;font-size:13.5px;color:var(--ink-2);border-bottom:1px dashed var(--line);transition:.16s;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.link-list li:last-child a{border-bottom:0}
.link-list li a:hover{color:var(--brand);padding-left:24px}
.link-list .dot{position:absolute;left:5px;top:50%;transform:translateY(-50%)}
.dot{width:5px;height:5px;border-radius:50%;background:var(--accent);flex-shrink:0;opacity:.75}
.side-search{display:flex;gap:0;border:1.5px solid var(--line);border-radius:12px;overflow:hidden;transition:.2s;background:var(--bg-soft)}
.side-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 15%,transparent)}
.side-search input{flex:1;border:0;outline:0;background:transparent;padding:10px 14px;font-size:13.5px;color:var(--ink);min-width:0}
.side-search button{border:0;background:linear-gradient(135deg,var(--brand),var(--brand-deep));color:#fff;font-weight:700;font-size:13.5px;padding:0 20px;cursor:pointer;transition:.2s}
.side-search button:hover{filter:brightness(1.08)}
.sticky-wrap{position:sticky;top:calc(var(--header-h) + 16px);display:flex;flex-direction:column;gap:22px}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:44px 0 40px;margin-top:20px}
.footer-grid{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:flex-start}
.f-brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.f-links{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:13.5px}
.f-links a{color:var(--ink-2);transition:.15s}
.f-links a:hover{color:var(--brand)}
.copyright{text-align:center;color:var(--ink-3);font-size:12.5px;margin-top:30px;line-height:2}
.copyright a{color:var(--ink-2)}
.copyright a:hover{color:var(--brand)}

/* back to top */
#toTop{position:fixed;right:26px;bottom:max(30px,env(safe-area-inset-bottom));width:46px;height:46px;border-radius:14px;border:1px solid var(--line);background:var(--card);color:var(--brand);display:grid;place-items:center;cursor:pointer;box-shadow:var(--shadow-lg);opacity:0;visibility:hidden;transform:translateY(12px);transition:.25s;z-index:150}
#toTop.show{opacity:1;visibility:visible;transform:none}
#toTop:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

.reveal{transition:opacity .6s ease,transform .6s ease}
html.js .reveal{opacity:0;transform:translateY(18px)}
html.js .reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:1020px){
  .layout{grid-template-columns:minmax(0,1fr)}
  .sidebar{order:2}
}
@media(max-width:1180px){
  .main-nav{display:none}
  #nav-toggle{display:grid;place-items:center;width:38px;height:38px;border:0;background:transparent;color:var(--ink);cursor:pointer}
  .drawer{display:block;position:fixed;inset:var(--header-h) 0 0 0;background:var(--bg);z-index:90;overflow-y:auto;transform:translateX(102%);visibility:hidden;pointer-events:none;transition:transform .28s ease,visibility 0s linear .28s}
  body.drawer-open .drawer{transform:none;visibility:visible;pointer-events:auto;transition:transform .28s ease,visibility 0s}
  .drawer-inner{padding:22px 20px 60px}
  .d-group{background:var(--card);border:1px solid var(--line);border-radius:14px;margin-bottom:14px;overflow:hidden}
  .d-group>a.top{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;font-weight:800;font-size:15.5px}
  .d-group ul{list-style:none;display:none;padding:0 10px 12px}
  .d-group.open ul{display:grid;grid-template-columns:repeat(2,1fr);gap:2px}
  .d-group ul a{display:block;padding:8px 10px;font-size:13.5px;color:var(--ink-2);border-radius:8px}
  .d-group ul a:hover{background:var(--brand-soft);color:var(--brand)}
  .d-caret{transition:.2s;color:var(--ink-3)}
  .d-group.open .d-caret{transform:rotate(180deg)}
  .mobile-tools{display:flex;flex-wrap:wrap;gap:8px}
  .mobile-search{margin-bottom:20px}
}
@media(min-width:1181px){
  #nav-toggle,.drawer{display:none!important}
}
@media(max-width:820px){
  .tool-tabbar{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media(max-width:560px){
  .hero{padding:44px 0 30px}
  .post-grid{grid-template-columns:1fr}
  .wrap{padding:0 16px}
}
@media(max-width:480px){
  .brand{font-size:16px}
  .brand small{display:none}
  .header-inner{gap:10px}
  .header-actions{gap:8px}
  .section-head{margin:26px 0 14px}
  .section-head h2{font-size:18px}
  .tool-panes{padding:14px}
  .tool-tab{font-size:13px;padding:8px 6px}
  .tool-pane.active{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .tool-card{padding:11px 12px}
  .tool-card .tool-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .side-card .inner{padding:14px 16px}
  .side-card h3{font-size:14.5px}
}
@media(max-width:340px){
  .tool-tabbar{grid-template-columns:repeat(2,minmax(0,1fr))}
}