.site-nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid #e4e4e7;height:60px;display:flex;align-items:center;padding:0 20px;font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,sans-serif}
.site-nav__inner{max-width:1200px;width:100%;margin:0 auto;display:flex;align-items:center;gap:18px}
.site-nav__brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:15.5px;color:#0a0a0f;text-decoration:none;letter-spacing:0;flex-shrink:0}
.site-nav__brand:hover{text-decoration:none;color:#0a0a0f}
.site-nav__logo{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:8px;background:#5e5ce6;color:#fff;font-weight:800;font-size:14px}
.site-nav__groups{display:flex;align-items:center;gap:4px;flex:1;min-width:0}
.site-nav__group{position:relative}
.site-nav__group-trigger{min-height:38px;padding:8px 13px;border:0;border-radius:8px;background:transparent;color:#52525b;font:inherit;font-size:13.5px;font-weight:650;cursor:pointer;display:flex;align-items:center;gap:6px;transition:background .15s ease,color .15s ease}
.site-nav__group-trigger::after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .15s ease}
.site-nav__group-trigger:hover,.site-nav__group-trigger[aria-expanded="true"]{background:#f4f4f5;color:#18181b}
.site-nav__group.is-active>.site-nav__group-trigger{color:#5e5ce6;background:#eef1ff}
.site-nav__group--trend>.site-nav__group-trigger{color:#176b4d;box-shadow:inset 0 -2px #2f8f69}
.site-nav__group--trend>.site-nav__group-trigger:hover,.site-nav__group--trend>.site-nav__group-trigger[aria-expanded="true"]{background:#eaf5ef;color:#0f5b40}
.site-nav__menu{position:absolute;top:calc(100% + 9px);left:0;width:220px;padding:7px;background:#fff;border:1px solid #e4e4e7;border-radius:8px;box-shadow:0 16px 36px rgba(24,24,27,.13);display:none}
.site-nav__group.is-open>.site-nav__menu{display:grid}
.site-nav__menu-label{padding:7px 10px 5px;color:#a1a1aa;font-size:11px;font-weight:700}
.site-nav__link{padding:9px 10px;border-radius:6px;font-size:13.5px;font-weight:500;color:#3f3f46;text-decoration:none;white-space:nowrap;transition:background .15s ease,color .15s ease}
.site-nav__link:hover{background:#f4f4f5;color:#18181b;text-decoration:none}
.site-nav__link.is-active{background:#eef1ff;color:#4f46e5;font-weight:650}
.site-nav__link--admin{font-size:12.5px;color:#7c3aed}
.site-nav__link--admin:hover{background:rgba(124,58,237,.08)}
.site-nav__link[hidden]{display:none!important}
.site-feedback-launcher{position:fixed;left:18px;bottom:24px;z-index:1050;display:flex;align-items:center;gap:8px;padding:11px 15px;border:1px solid rgba(255,255,255,.22);border-radius:999px;background:#17172b;color:#fff;box-shadow:0 10px 28px rgba(23,23,43,.22);font:600 13px/1.2 'Noto Sans SC',-apple-system,BlinkMacSystemFont,sans-serif;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.site-feedback-launcher:hover{background:#252554;box-shadow:0 14px 34px rgba(23,23,43,.28);transform:translateY(-2px)}
.site-feedback-launcher:focus-visible{outline:3px solid rgba(94,92,230,.35);outline-offset:3px}
.site-feedback-launcher__mark{display:inline-flex;align-items:center;justify-content:center;width:23px;height:23px;border-radius:8px;background:#f7c948;color:#17172b;font-size:15px}
.site-feedback-panel{position:fixed;left:18px;bottom:76px;z-index:1051;width:min(392px,calc(100vw - 24px));max-height:min(620px,calc(100vh - 100px));overflow:auto;padding:20px;background:#fff;border:1px solid #e4e4e7;border-radius:20px;box-shadow:0 24px 70px rgba(10,10,20,.2);font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,sans-serif;color:#0a0a0f}
.site-feedback-panel[hidden]{display:none}
.site-feedback-panel__head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:14px}
.site-feedback-panel__eyebrow{display:block;color:#5e5ce6;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px}
.site-feedback-panel h2{font-size:20px;line-height:1.3;letter-spacing:-.02em;margin:0}
.site-feedback-panel__close{width:30px;height:30px;border:0;border-radius:9px;background:#f4f4f5;color:#52525b;font-size:18px;line-height:1;cursor:pointer}
.site-feedback-panel__close:hover{background:#e4e4e7;color:#18181b}
.site-feedback-panel__intro{margin:0 0 14px;color:#71717a;font-size:13px;line-height:1.6}
.site-feedback-founder{width:100%;display:flex;align-items:center;gap:10px;margin:0 0 14px;padding:10px 12px;border:1px solid #bbf7d0;border-radius:8px;background:#f0fdf4;color:#166534;text-align:left;font:inherit;cursor:pointer}
.site-feedback-founder:hover{border-color:#86efac;background:#ecfdf5}
.site-feedback-founder:focus-visible{outline:3px solid rgba(22,125,71,.22);outline-offset:2px}
.site-feedback-founder__mark{display:flex;align-items:center;justify-content:center;width:32px;height:32px;flex:0 0 32px;border-radius:50%;background:#167d47;color:#fff;font-size:13px;font-weight:800}
.site-feedback-founder__copy{min-width:0;display:grid;gap:1px;color:#166534;font-size:12px;line-height:1.4}
.site-feedback-founder__copy strong{color:#14532d;font-size:13px}
.site-feedback-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:14px;padding:4px;background:#f4f4f5;border-radius:11px}
.site-feedback-tab{border:0;border-radius:8px;background:transparent;color:#71717a;padding:8px 10px;font:600 13px inherit;cursor:pointer}
.site-feedback-tab.is-active{background:#fff;color:#4338ca;box-shadow:0 1px 4px rgba(0,0,0,.08)}
.site-feedback-field{display:grid;gap:6px;margin-top:12px}
.site-feedback-field label{color:#52525b;font-size:12px;font-weight:700}
.site-feedback-field select,.site-feedback-field textarea{width:100%;border:1px solid #d4d4d8;border-radius:10px;background:#fff;color:#18181b;padding:10px 11px;font:400 14px/1.5 inherit;outline:none}
.site-feedback-field textarea{min-height:112px;resize:vertical}
.site-feedback-field select:focus,.site-feedback-field textarea:focus{border-color:#5e5ce6;box-shadow:0 0 0 3px rgba(94,92,230,.12)}
.site-feedback-field textarea::placeholder{color:#a1a1aa}
.site-feedback-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px}
.site-feedback-submit{border:0;border-radius:10px;background:#5e5ce6;color:#fff;padding:10px 16px;font:700 13px inherit;cursor:pointer;transition:background .15s ease,transform .15s ease}
.site-feedback-submit:hover{background:#4b49c8;transform:translateY(-1px)}
.site-feedback-submit:disabled{opacity:.55;cursor:wait;transform:none}
.site-feedback-status{min-height:1.4em;color:#71717a;font-size:12px;text-align:right}
.site-feedback-status.is-ok{color:#047857}.site-feedback-status.is-error{color:#b91c1c}
.site-feedback-hp{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;overflow:hidden!important}
@media(max-width:680px){
  .site-feedback-launcher{left:12px;bottom:14px;padding:10px 13px;font-size:12px}
  .site-feedback-panel{left:12px;bottom:64px;width:min(392px,calc(100% - 24px));max-height:calc(100vh - 84px);padding:18px;border-radius:17px}
}
@media(prefers-reduced-motion:reduce){.site-feedback-launcher,.site-feedback-submit{transition:none}}
.site-nav__paper{box-sizing:border-box;display:inline-flex;align-items:center;flex-shrink:0;min-height:36px;padding:7px 14px;border-radius:999px;background:linear-gradient(135deg,#ff6fae,#7b61ff);color:#fff;font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap;box-shadow:0 4px 12px rgba(123,97,255,.22);transition:transform .15s ease,box-shadow .15s ease}
.site-nav__paper:hover{color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 6px 16px rgba(123,97,255,.3)}
.site-nav__menu-toggle{display:none;width:44px;height:44px;padding:0;border:1px solid #e4e4e7;border-radius:8px;background:#fff;color:#27272a;align-items:center;justify-content:center;cursor:pointer}
.site-nav__menu-toggle svg{width:20px;height:20px}
.site-nav__right{margin-left:auto;display:flex;align-items:center;gap:8px;flex-shrink:0}
.snav-btn{display:inline-flex;align-items:center;justify-content:center;padding:7px 14px;border-radius:8px;border:none;background:transparent;cursor:pointer;font:inherit;font-size:13.5px;font-weight:600;text-decoration:none;line-height:1;transition:all .15s ease}
.snav-btn--primary{background:#5e5ce6;color:#fff}
.snav-btn--primary:hover{background:#4b49c8;color:#fff;text-decoration:none;transform:translateY(-1px)}
.snav-btn--outline{background:transparent;border:1.5px solid #e4e4e7;color:#0a0a0f}
.snav-btn--outline:hover{border-color:#5e5ce6;color:#5e5ce6;background:rgba(94,92,230,.04);text-decoration:none}
.snav-btn--ghost{background:transparent;color:#52525b}
.snav-btn--ghost:hover{color:#0a0a0f;background:rgba(0,0,0,.04);text-decoration:none}
@media(max-width:900px){
  .site-nav{height:58px;padding:0 14px}
  .site-nav__inner{position:relative;gap:8px}
  .site-nav__brand{min-width:0;margin-right:auto}
  .site-nav__brand span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .site-nav__menu-toggle{display:inline-flex;flex-shrink:0}
  .site-nav__groups{position:absolute;top:52px;left:-14px;right:-14px;max-height:calc(100vh - 72px);overflow-y:auto;padding:12px 14px 18px;background:#fff;border-bottom:1px solid #e4e4e7;box-shadow:0 14px 28px rgba(24,24,27,.12);display:none}
  .site-nav__groups.is-open{display:block}
  .site-nav__group{padding:0 0 12px}
  .site-nav__group+.site-nav__group{padding-top:12px;border-top:1px solid #f4f4f5}
  .site-nav__group-trigger{width:100%;min-height:32px;padding:2px 8px 8px;color:#18181b;font-size:12px;cursor:default;pointer-events:none}
  .site-nav__group-trigger::after{display:none}
  .site-nav__group.is-active>.site-nav__group-trigger{color:#5e5ce6;background:transparent}
  .site-nav__menu{position:static;width:auto;padding:0;display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px;border:0;border-radius:0;box-shadow:none}
  .site-nav__menu-label{display:none}
  .site-nav__link{min-height:44px;padding:11px 10px;border-radius:7px;white-space:normal;line-height:1.55}
  .site-nav__right{margin-left:0;gap:6px}
  .snav-btn{min-height:44px;padding:7px 11px;font-size:12.5px}
  .snav-btn--pro,.snav-btn--papers,.snav-btn--logout{display:none}
  .snav-btn--account{border:1.5px solid #e4e4e7;color:#0a0a0f;max-width:92px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
}
@media(max-width:480px){
  .snav-btn--primary{display:none}
  .site-nav__paper{min-height:44px;padding:7px 11px;font-size:12.5px}
}
@media(max-width:360px){
  .site-nav{padding-inline:10px}
  .site-nav__brand span:last-child{display:none}
  .site-nav__groups{left:-10px;right:-10px;padding-inline:10px}
  .snav-btn{padding-inline:9px}
}