:root{--color-text:#1f2329;--color-text-secondary:#5e6573;--color-text-muted:#8f959e;--color-border:#e5e7ec;--color-bg:#fff;--color-bg-soft:#f7f9fc;--color-primary:#3370ff;--color-primary-dark:#245bdb;--color-primary-soft:#eaf1ff;--color-success:#00b96b;--color-warning:#ffb400;--color-cyan:#00d6b9;--gradient-primary:linear-gradient(135deg,#00d6b9,#3370ff);--gradient-download:linear-gradient(135deg,#6dd9ff,#3370ff);--shadow-sm:0 1px 2px #0f1a300f;--shadow-md:0 4px 12px #0f1a3014;--shadow-lg:0 10px 40px #0f1a301f;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-pill:999px;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Helvetica,Arial,sans-serif;--header-height:68px;--max-width:1180px}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:15px;line-height:1.5}a{text-decoration:none}a,button{color:inherit;cursor:pointer}button{background:0 0;border:none;font-family:inherit}img,svg{max-width:100%;display:block}input{font-family:inherit;font-size:inherit;color:inherit}ol,ul{margin:0;padding:0;list-style:none}.larky-sr-only{clip:rect(0,0,0,0);clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}.site-header{z-index:100;height:var(--header-height);background:#fff;border-bottom:1px solid #0000;align-items:center;display:flex;position:sticky;top:0}.site-header.has-shadow{border-bottom-color:var(--color-border)}.site-header .container{justify-content:space-between;align-items:center;gap:24px;max-width:1440px;padding:0 40px;display:flex}.site-header .brand{align-items:center;gap:8px;display:flex}.site-header .brand img{width:auto;height:26px}.main-nav{flex:1;justify-content:flex-start;align-items:center;gap:4px;padding-left:12px;display:flex}.main-nav .nav-item{position:relative}.main-nav .nav-link{color:var(--color-text);border-radius:var(--radius-sm);align-items:center;gap:4px;padding:10px 14px;font-size:14px;font-weight:500;transition:background-color .15s,color .15s;display:inline-flex}.main-nav .nav-link:hover{background:var(--color-bg-soft);color:var(--color-primary)}.main-nav .nav-link svg{transition:transform .2s}.main-nav .nav-link:hover svg{transform:rotate(180deg)}.header-actions{align-items:center;gap:14px;display:flex}.header-actions .text-link{color:var(--color-text);padding:8px 4px;font-size:14px;font-weight:500}.header-actions .text-separator{color:#dee0e3;margin:0 8px;font-size:12px}.header-actions .text-link:hover{color:var(--color-primary)}.btn{border-radius:var(--radius-pill);white-space:nowrap;justify-content:center;align-items:center;gap:8px;padding:10px 22px;font-size:14px;font-weight:600;line-height:1;transition:transform .15s,box-shadow .15s,background-color .15s,color .15s,border-color .15s;display:inline-flex}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark);box-shadow:0 6px 18px #3370ff59}.btn-outline{border:1.5px solid var(--color-primary);color:var(--color-primary);background:#fff}.btn-outline:hover{background:var(--color-primary-soft)}.btn-lg{padding:14px 32px;font-size:15px}.btn-block{width:100%;display:flex}.floating-actions{z-index:90;flex-direction:column;gap:10px;display:flex;position:fixed;bottom:30px;right:14px}.floating-actions .fa-item{border:1px solid var(--color-border);width:56px;height:64px;color:var(--color-text-secondary);box-shadow:var(--shadow-md);cursor:pointer;text-align:center;background:#fff;border-radius:12px;flex-direction:column;justify-content:center;align-items:center;gap:4px;font-size:11px;line-height:1.2;transition:transform .15s,box-shadow .15s;display:flex}.floating-actions .fa-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.floating-actions .fa-icon{background:var(--color-primary-soft);border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;display:flex;position:relative}.floating-actions .fa-icon img{width:16px;height:16px}.floating-actions .fa-badge{color:#fff;background:#ff4d4f;border-radius:50%;justify-content:center;align-items:center;width:16px;height:16px;font-size:10px;font-weight:600;display:flex;position:absolute;top:-4px;right:-4px}@media (width<=960px){.header-actions .text-link[data-collapse=true],.main-nav{display:none}}@media (width<=640px){.header-actions .btn-outline{display:none}}