:root{--bg:#f6f7fb;--surface:rgba(255,255,255,.72);--surface-solid:#fff;--text:#15162a;--muted:#73778c;--line:rgba(99,102,241,.12);--primary:#6d5dfc;--primary2:#35b8ff;--shadow:0 20px 60px rgba(39,42,90,.1);--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;line-height:1.6;transition:.3s;overflow-x:hidden}body.dark{--bg:#0e1020;--surface:rgba(23,25,48,.72);--surface-solid:#191b31;--text:#f3f4ff;--muted:#9ba0bb;--line:rgba(139,145,255,.16);--shadow:0 24px 70px rgba(0,0,0,.28)}a{text-decoration:none;color:inherit}button,input,textarea,select{font:inherit}.container{width:min(1400px,calc(100% - 40px));margin:auto}.ambient{position:fixed;width:480px;height:480px;border-radius:50%;filter:blur(100px);opacity:.13;z-index:-1}.a1{background:#694cff;top:-220px;left:-120px}.a2{background:#23c9ff;right:-180px;top:250px}.topbar{position:sticky;top:0;z-index:50;background:rgba(246,247,251,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.dark .topbar{background:rgba(14,16,32,.72)}.nav-wrap{height:76px;display:flex;align-items:center;gap:38px}.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary2));box-shadow:0 10px 24px rgba(109,93,252,.3)}.main-nav{display:flex;gap:28px;margin-right:auto}.main-nav a{font-size:14px;color:var(--muted);transition:.25s}.main-nav a:hover{color:var(--primary)}.nav-actions{display:flex;gap:10px}.icon-btn,.admin-link,.mobile-toggle{border:1px solid var(--line);background:var(--surface);color:var(--text);padding:9px 14px;border-radius:12px;cursor:pointer}.mobile-toggle{display:none}.hero{padding:94px 0 48px;text-align:center}.hero-inner{display:flex;align-items:center;flex-direction:column}.eyebrow,.section-kicker{color:var(--primary);font-size:12px;font-weight:800;letter-spacing:2px;text-transform:uppercase}.hero h1{font-size:clamp(44px,6vw,78px);line-height:1.08;margin:20px 0 18px;letter-spacing:-3px}.hero h1 span{background:linear-gradient(90deg,var(--primary),#a05cf6,var(--primary2));background-clip:text;-webkit-background-clip:text;color:transparent}.hero>div>p{font-size:18px;color:var(--muted);margin:0 0 32px}.search-box{width:min(820px,100%);height:68px;display:flex;align-items:center;padding:7px;background:var(--surface);backdrop-filter:blur(20px);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:20px}.search-box input{flex:1;border:0;outline:0;background:transparent;color:var(--text);padding:0 18px;font-size:16px}.engine-picker{position:relative}.engine-picker>button{height:52px;border:0;background:var(--surface-solid);color:var(--text);border-radius:14px;padding:0 18px;cursor:pointer}.engine-menu{position:absolute;top:60px;left:0;display:none;width:120px;padding:8px;background:var(--surface-solid);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}.engine-picker.open .engine-menu{display:grid}.engine-menu button{border:0;background:none;color:var(--text);padding:9px;border-radius:8px;text-align:left;cursor:pointer}.engine-menu button:hover{background:var(--line)}.search-submit,.primary-btn,.inner-search button{border:0;color:#fff;background:linear-gradient(135deg,var(--primary),#835cf6);padding:0 26px;height:52px;border-radius:14px;font-weight:700;cursor:pointer;box-shadow:0 10px 24px rgba(109,93,252,.24)}.search-hints{display:flex;gap:15px;margin-top:18px;font-size:13px;color:var(--muted)}.search-hints a:hover{color:var(--primary)}