:root{color-scheme:light;--ink:#233341;--muted:#677480;--line:#e5e9ec;--accent:#345d72;--surface:#fff;--canvas:#f7f8fa;--focus:#246b90}
*{box-sizing:border-box}
html{min-height:100%;background:var(--canvas)}
body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans CJK SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.6;min-height:100vh;background:linear-gradient(180deg,#fff 0,#fff 320px,#f7f8fa 660px);display:flex;flex-direction:column}
button,input{font:inherit}
button,a,input{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
button:disabled,input:disabled{cursor:default}
button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:4px}
a{color:inherit}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:fixed;top:10px;left:16px;z-index:10;padding:8px 16px;background:#fff;border:1px solid var(--line);border-radius:6px;transform:translateY(-180%)}
.skip-link:focus{transform:translateY(0)}
.site-header{width:min(1280px,100%);min-height:86px;padding:22px 40px;display:flex;align-items:center;justify-content:space-between;gap:16px;margin:0 auto}
.brand{display:flex;align-items:center;gap:11px;min-width:0;font-size:16px;font-weight:600;letter-spacing:-.2px}
.brand img{flex:none}
.brand span{overflow-wrap:anywhere;line-height:1.35}
#logout-form{margin:0;flex:none}
.logout-button{border:1px solid transparent;background:transparent;color:var(--muted);display:flex;align-items:center;gap:7px;border-radius:7px;padding:8px 10px;font-size:13px;min-height:40px}
.logout-button:hover{background:#f1f4f6;color:var(--ink)}
.logout-button svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.main-content{width:min(1280px,100%);margin:0 auto;padding:29px 40px 56px;flex:1}
.intro{text-align:center;margin-bottom:52px}
h1{font-size:32px;font-weight:600;line-height:1.35;letter-spacing:-1px;margin:0 0 12px;overflow-wrap:anywhere}
.subtitle{margin:0;color:var(--muted);font-size:15px;overflow-wrap:anywhere}
.search-box{max-width:470px;min-height:52px;margin:28px auto 0;display:flex;align-items:center;gap:12px;background:#f7f8fa;border:1px solid #dee4e8;border-radius:9px;padding:0 16px;text-align:left;transition:border-color .15s,box-shadow .15s}
.search-box:focus-within{border-color:var(--focus);box-shadow:0 0 0 3px #246b9012}
.search-box svg{width:19px;height:19px;fill:none;stroke:#7e8a94;stroke-width:1.8;stroke-linecap:round;flex:none}
.search-box input{width:100%;min-width:0;background:transparent;border:0;padding:14px 0;color:var(--ink);font-size:14px;outline:none}
.search-box input:focus-visible{outline:none}
.search-box input::placeholder{color:#7a8791}
.search-box input::-webkit-search-cancel-button{display:none}
#clear-search{padding:0;width:30px;height:30px;border:0;border-radius:5px;flex:none;color:#657581;font-size:23px;background:transparent;line-height:1}
#clear-search:hover{background:#e7ecef}
.categories{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:20px}
.category-button{padding:6px 14px;min-height:38px;border:1px solid var(--line);border-radius:20px;background:#fff;color:var(--muted);font-size:13px;max-width:100%;overflow-wrap:anywhere}
.category-button[aria-pressed="true"]{border-color:var(--accent);background:var(--accent);color:white}
.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:0 1px 17px}
.section-heading h2,.section-heading p{font-size:12px;font-weight:500;color:var(--muted);margin:0;letter-spacing:.3px;overflow-wrap:anywhere}
.tool-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.tool-card{position:relative;text-decoration:none;min-width:0;display:flex;align-items:center;flex-direction:column;text-align:center;padding:28px 18px 24px;min-height:223px;background:var(--surface);border:1px solid #e6e9ec;border-radius:10px;box-shadow:0 3px 7px #23334106,0 10px 22px #23334103;transition:transform .16s,border-color .16s,box-shadow .16s}
.tool-card:hover{transform:translateY(-3px);border-color:#c5d2da;box-shadow:0 6px 12px #23334108,0 16px 32px #23334107}
.tool-icon{width:64px;height:64px;border-radius:50%;background:#fbfcfd;border:1px solid #f0f2f4;box-shadow:0 3px 8px #23334106;display:flex;align-items:center;justify-content:center;margin-bottom:19px;flex:none;color:var(--accent)}
.tool-icon svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tool-card h3{text-wrap:balance;font-size:15px;line-height:1.55;font-weight:600;margin:0 0 7px;overflow-wrap:anywhere;max-width:100%}
.tool-card p{font-size:12px;line-height:1.65;color:var(--muted);margin:0;overflow-wrap:anywhere;max-width:100%}
.external-arrow{position:absolute;right:13px;top:10px;font-size:16px;color:#98a4ad;opacity:0;transition:opacity .16s}
.tool-card:hover .external-arrow,.tool-card:focus-visible .external-arrow{opacity:1}
.empty-state{padding:45px 20px;text-align:center;border:1px dashed #dce2e7;border-radius:10px;background:#ffffff80;color:var(--muted)}
.empty-state h2{font-size:17px;font-weight:500;margin:4px 0 8px;color:var(--ink)}
.empty-state p{font-size:14px;margin:8px 0 16px;overflow-wrap:anywhere}
.empty-symbol{font-size:36px;line-height:1;color:#8998a3}
.secondary-button{border:1px solid #d9e1e7;border-radius:7px;background:#fff;color:var(--ink);padding:8px 16px;font-size:13px;min-height:40px}
.secondary-button:hover{background:#f3f6f8}
.site-footer{text-align:center;color:#7c8892;font-size:12px;padding:24px 20px 30px}
.demo-badge{width:fit-content;max-width:100%;border:1px solid #e5d7b9;border-radius:20px;background:#fbf7ed;color:#76603a;padding:4px 12px;margin:0 auto 16px;font-size:12px}
.login-page{justify-content:center;align-items:center;min-height:100dvh;padding:30px 20px;background:#f7f8fa}
.login-panel{max-width:390px;width:100%;text-align:center;padding:36px 30px 28px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 6px 28px #23334106}
.login-brand{display:block;margin:0 auto 18px}
.eyebrow{font-size:12px;color:var(--muted);margin:0 0 12px}
.login-panel h1{font-size:26px;margin-bottom:8px;letter-spacing:-.5px}
.login-intro{color:var(--muted);font-size:14px;margin:0 0 26px}
.login-form{text-align:left}
.login-form label{display:block;font-size:13px;font-weight:500;margin-bottom:8px}
.login-form input{width:100%;border:1px solid #d7dfe5;border-radius:7px;background:#fff;padding:11px 13px;min-height:48px}
.primary-button{width:100%;margin-top:16px;min-height:46px;display:flex;justify-content:space-between;align-items:center;padding:10px 15px;border:1px solid #263c4d;border-radius:7px;background:#263c4d;color:#fff;font-size:14px}
.primary-button:hover{background:#355469}
.login-note{font-size:11px;color:#7b8791;margin:24px 0 0}
.form-message{font-size:13px;text-align:left;color:#8b413c;background:#fcf2f0;border:1px solid #f3dedb;padding:10px 12px;border-radius:7px;overflow-wrap:anywhere}
@media(max-width:1199px){.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.main-content{max-width:1000px}.site-header{max-width:1000px}}
@media(max-width:849px){.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.site-header{padding:20px 28px}.main-content{padding:24px 28px 40px}h1{font-size:29px}.intro{margin-bottom:36px}}
@media(max-width:479px){.site-header{padding:16px 20px;min-height:76px;gap:10px}.brand{font-size:14px;gap:9px}.brand img{width:29px;height:29px}.logout-button{padding:7px 4px;font-size:12px;gap:5px}.main-content{padding:24px 20px 30px}h1{font-size:26px;letter-spacing:-.8px}.subtitle{font-size:13px}.search-box{padding:0 12px;margin-top:23px;gap:9px}.search-box input{font-size:13px}.intro{margin-bottom:31px}.tool-grid{grid-template-columns:minmax(0,1fr);gap:14px}.tool-card{min-height:183px;padding:23px 22px 21px}.tool-icon{height:54px;width:54px;margin-bottom:14px}.tool-icon svg{width:26px;height:26px}.tool-card h3{font-size:15px}.tool-card p{font-size:12px}.site-footer{font-size:11px;padding:12px 24px 25px}.login-panel{padding:28px 22px}.section-heading{margin-bottom:13px}.external-arrow{opacity:.6}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}.tool-card:hover{transform:none}}