*{margin:0;padding:0;box-sizing:border-box}
:root{--brand:#d93f6e;--brand-light:#f2a7bd;--brand-glow:rgba(217,63,110,0.6);--bg-radial:radial-gradient(circle at 20% 30%,#110a14 0%,#020105 100%);--glass-bg:rgba(12,10,18,0.7);--glass-border:rgba(255,255,255,0.08);--text-light:#f1f3fc;--text-muted:#9ca3c2;--gold:#fbbf24;--radius-card:28px;--radius-lg:20px;--transition:cubic-bezier(0.2,0.9,0.4,1.1)}
body{margin:0;background:#000;background-image:var(--bg-radial);font-family:'Inter',system-ui,-apple-system,'PingFang SC','SF Pro Text',sans-serif;color:var(--text-light);min-height:100vh;padding:20px 20px 120px 20px}
.help-wrapper{max-width:920px;margin:0 auto;position:relative}
.help-back-btn{display:inline-flex;align-items:center;gap:10px;background:linear-gradient(105deg,#d93f6e,#b42b54);color:#fff;text-decoration:none;font-weight:600;padding:12px 28px;border-radius:50px;box-shadow:0 8px 28px rgba(217,63,110,0.4);border:1px solid rgba(255,255,255,0.2);transition:all .3s;margin-bottom:30px;font-size:1rem}
.help-back-btn:hover{transform:translateY(-4px) scale(1.02);box-shadow:0 14px 32px rgba(217,63,110,0.55)}
.help-header{text-align:center;margin-bottom:40px}
.help-header h1{font-size:clamp(32px,7vw,56px);font-weight:800;background:linear-gradient(125deg,#fff,var(--brand),var(--gold));background-clip:text;-webkit-background-clip:text;color:transparent;letter-spacing:-0.02em;margin-bottom:8px}
.help-header p{color:var(--text-muted);font-size:16px}
.help-search{position:relative;margin-bottom:40px}
.help-search input{width:100%;padding:16px 24px 16px 56px;background:rgba(20,18,28,0.85);backdrop-filter:blur(12px);border:2px solid rgba(255,255,255,0.15);border-radius:60px;font-size:16px;color:#fff;outline:none;transition:all .3s}
.help-search input::placeholder{color:var(--text-muted)}
.help-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(217,63,110,0.2)}
.help-search i{position:absolute;left:24px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:18px}
.help-search .clear-btn{position:absolute;right:20px;top:50%;transform:translateY(-50%);background:0 0;border:none;color:var(--text-muted);font-size:20px;cursor:pointer;display:none}
.help-search .clear-btn.visible{display:block}
.help-section{background:var(--glass-bg);backdrop-filter:blur(18px);border:1px solid var(--glass-border);border-radius:var(--radius-card);padding:28px 30px 32px;margin-bottom:32px;transition:border-color .3s,box-shadow .3s;box-shadow:0 12px 40px rgba(0,0,0,0.5)}
.help-section:hover{border-color:rgba(217,63,110,0.5);box-shadow:0 16px 48px rgba(217,63,110,0.08)}
.help-section-title{font-size:28px;font-weight:700;background:linear-gradient(135deg,#fff,#f2a7bd);background-clip:text;-webkit-background-clip:text;color:transparent;padding-bottom:12px;border-bottom:2px solid rgba(217,63,110,0.3);display:flex;align-items:center;gap:12px;cursor:pointer;user-select:none;transition:opacity .2s}
.help-section-title:hover{opacity:.8}
.help-section-title i{color:var(--brand);font-size:24px}
.help-section-title .toggle-icon{margin-left:auto;font-size:18px;color:var(--text-muted);transition:transform .3s}
.help-section-title .toggle-icon.open{transform:rotate(180deg)}
.help-collapse-placeholder{text-align:center;padding:30px 20px;color:var(--text-muted);font-size:15px;cursor:pointer;transition:color .2s;display:block;border-radius:var(--radius-lg);background:rgba(255,255,255,0.02)}
.help-collapse-placeholder:hover{color:#fff;background:rgba(255,255,255,0.05)}
.help-collapse-placeholder.hidden{display:none}
.help-items-wrapper{overflow:hidden;max-height:0;transition:max-height .5s var(--transition)}
.help-items-wrapper.expanded{max-height:9999px}
.help-items-inner{overflow:hidden;padding-top:4px}
.help-items{display:flex;flex-direction:column;gap:0;padding-top:0;padding-bottom:0}
.help-items.expanded{padding-top:10px}
.help-item{padding:20px 20px;border-radius:var(--radius-lg);background:rgba(255,255,255,0.02);margin-bottom:8px;transition:background .2s;border-left:3px solid transparent}
.help-item:last-child{margin-bottom:0}
.help-item:hover{background:rgba(255,255,255,0.04);border-left-color:var(--brand)}
.help-item .q{font-weight:600;font-size:17px;color:#fff;margin-bottom:8px;display:flex;align-items:flex-start;gap:10px}
.help-item .q::before{content:"❓";font-size:18px;color:var(--brand);flex-shrink:0}
.help-item .a{color:#c8d0e8;font-size:15px;line-height:1.8;padding-left:34px;border-left:2px solid rgba(217,63,110,0.3);padding-left:20px;margin-top:2px}
/* 内联标签样式 */
/*.help-item .a {white-space: pre-wrap;word-break: break-word;}*/
.help-item .a b,.help-item .a strong{font-weight:700;color:#fff}
.help-item .a i,.help-item .a em{font-style:italic;color:#dce0f0}
.help-item .a u{text-decoration:underline}
.help-item .a ul,.help-item .a ol{padding-left:24px;margin:8px 0}
.help-item .a li{margin-bottom:4px;color:#c8d0e8}
.help-item .a p{margin:8px 0}
.help-item .a h4{font-size:18px;font-weight:700;margin:12px 0 6px;color:#f1f3fc}
.help-item .a h5{font-size:16px;font-weight:600;margin:10px 0 4px;color:#e0e4f0}
.help-item .a div{margin:4px 0}
.help-item .a a{color:var(--brand);text-decoration:underline;transition:color .2s}
.help-item .a a:hover{color:var(--brand-light)}
.help-item .a ul{list-style-type:disc}
.help-item .a ol{list-style-type:decimal}
.help-item .a li::marker{color:var(--brand)}
.help-item .a mark{background:#fbbf24;color:#000;padding:0 4px;border-radius:4px;font-weight:600}
.help-no-result{text-align:center;padding:60px 20px;color:var(--text-muted);font-size:18px}
.help-no-result i{font-size:48px;margin-bottom:16px;display:block;color:var(--brand)}
.help-footer{text-align:center;margin-top:50px;opacity:.4;font-size:12px;color:var(--text-muted);padding-bottom:20px}
.help-float-buttons{position:fixed;bottom:40px;right:30px;display:flex;flex-direction:column;gap:12px;z-index:999}
.help-float-btn{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#d93f6e,#b42b54);color:#fff;border:none;box-shadow:0 6px 20px rgba(217,63,110,0.5);font-size:22px;cursor:pointer;transition:all .25s;display:flex;align-items:center;justify-content:center;text-decoration:none}
.help-float-btn:hover{transform:scale(1.1);box-shadow:0 8px 30px rgba(217,63,110,0.7)}
.help-float-btn i{font-size:20px}
@media (max-width:640px){body{padding:12px 12px 100px 12px}.help-section{padding:20px 16px 24px}.help-section-title{font-size:22px}.help-item{padding:14px 14px}.help-item .q{font-size:16px}.help-item .a{font-size:14px;padding-left:14px}.help-back-btn{padding:10px 20px;font-size:14px}.help-float-buttons{bottom:30px;right:16px}.help-float-btn{width:44px;height:44px;font-size:18px}}