/* ===== 帮助中心专用样式（复用 style.css 的设计变量） ===== */
.hc-announce{background:var(--ink);color:#eef3e6;border-radius:12px;padding:13px 18px;margin:22px 0 0;display:flex;gap:14px;align-items:center;justify-content:space-between;font-size:14px;line-height:1.6}
.hc-announce .an-body{display:flex;gap:10px;align-items:flex-start}
.hc-announce .an-tag{flex:none;background:var(--lime);color:var(--ink);font-weight:800;font-size:12px;border-radius:6px;padding:3px 8px;margin-top:1px}
.hc-announce button{flex:none;background:none;border:1px solid #ffffff44;color:#eef3e6;border-radius:8px;padding:5px 11px;font-size:13px}
.hc-announce button:hover{background:#ffffff1f}
.hc-hero{background:#edf0e5;border-radius:var(--radius);padding:clamp(30px,5vw,58px);margin:30px 0 0}
.hc-hero h1{font-size:clamp(34px,5.5vw,66px);font-weight:900;letter-spacing:-.055em;margin:8px 0 0;line-height:1.05}
.hc-hero p{color:#424c41;max-width:640px;margin:18px 0 0;font-size:16px;line-height:1.8}
.hc-quick{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:26px 0 0}
.hc-quick a{border:1px solid var(--line);background:#fff;border-radius:14px;padding:20px;display:block;transition:transform .15s ease,border-color .15s ease}
.hc-quick a:hover{border-color:var(--ink);transform:translateY(-3px)}
.hc-quick .q-no{font-size:13px;font-weight:800;color:#5b791d;letter-spacing:.12em}
.hc-quick h3{font-size:18px;margin:10px 0 6px}
.hc-quick p{font-size:13px;color:var(--muted);margin:0;line-height:1.6}
.hc-section{scroll-margin:26px;padding:52px 0 8px}
.hc-section > h2{font-size:clamp(26px,3.6vw,38px);letter-spacing:-.045em;margin:0 0 8px}
.hc-section .lead{color:var(--muted);font-size:15px;line-height:1.75;margin:0 0 26px;max-width:760px}
.hc-concepts{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.hc-concept{border:1px solid var(--line);background:#fff;border-radius:14px;padding:22px}
.hc-concept .c-ic{width:44px;height:44px;border-radius:11px;background:var(--lime);display:grid;place-items:center;font-weight:900;font-size:18px;color:var(--ink);margin-bottom:14px}
.hc-concept h3{margin:0 0 8px;font-size:18px}
.hc-concept p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
.hc-flow{display:flex;flex-wrap:wrap;gap:10px;align-items:stretch;margin-top:8px}
.hc-flow .step-chip{flex:1 1 150px;border:1px solid var(--line);background:#fafbf7;border-radius:12px;padding:16px;position:relative}
.hc-flow .step-chip b{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--ink);color:#fff;font-size:13px;margin-bottom:10px}
.hc-flow .step-chip strong{display:block;font-size:15px;margin-bottom:4px}
.hc-flow .step-chip span{font-size:13px;color:var(--muted);line-height:1.6}
.hc-flow .arrow{align-self:center;color:#9aa58c;font-weight:800}
/* 详细步骤 */
.hc-steps{display:grid;gap:16px;counter-reset:hstep}
.hc-step{display:grid;grid-template-columns:64px 1fr;gap:20px;border:1px solid var(--line);background:#fff;border-radius:16px;padding:24px}
.hc-step .s-no{counter-increment:hstep;width:52px;height:52px;border-radius:14px;background:var(--ink);color:var(--lime);display:grid;place-items:center;font-size:22px;font-weight:900}
.hc-step .s-no::before{content:counter(hstep)}
.hc-step h3{margin:4px 0 8px;font-size:20px}
.hc-step p{margin:0 0 10px;color:var(--muted);font-size:14.5px;line-height:1.8}
.hc-step ul{margin:6px 0 0;padding-left:20px;color:var(--muted);font-size:14px;line-height:1.9}
.hc-step code{background:#eef2df;color:#3a5226;padding:2px 7px;border-radius:6px;font-size:13px}
.hc-note{border-radius:12px;padding:14px 18px;font-size:14px;line-height:1.7;margin-top:6px}
.hc-note.warn{background:#fdf3e2;border:1px solid #f0d9ad;color:#8a5a17}
.hc-note.safe{background:#eef6e6;border:1px solid #cfe3bd;color:#3c5e2a}
.hc-note.danger{background:#fcecec;border:1px solid #f2c4c4;color:#9c2f2f}
.hc-after{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}
.hc-after .a-card{border:1px solid var(--line);border-radius:12px;background:#fafbf7;padding:18px}
.hc-after .a-card strong{display:block;font-size:15px;margin-bottom:6px}
.hc-after .a-card span{font-size:13.5px;color:var(--muted);line-height:1.65}
/* FAQ */
.hc-search{position:relative;margin-bottom:22px;max-width:520px}
.hc-search input{width:100%;border:1px solid var(--line);background:#fff;border-radius:100px;padding:14px 22px;font-size:15px}
.hc-faq-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.hc-faq-tabs button{border:1px solid var(--line);background:#fff;border-radius:100px;padding:8px 18px;font-size:14px}
.hc-faq-tabs button[aria-selected=true]{background:var(--ink);color:#fff;border-color:var(--ink)}
.hc-faq-group{margin-bottom:10px}
.hc-faq-group > h3{font-size:16px;color:#5b791d;margin:24px 0 6px;letter-spacing:.02em}
.hc-faq details{border:1px solid var(--line);border-radius:12px;background:#fff;margin-bottom:10px;overflow:hidden}
.hc-faq summary{cursor:pointer;font-weight:700;padding:16px 20px;font-size:15px;list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center}
.hc-faq summary::after{content:"+";font-size:20px;color:#5b791d;font-weight:800;flex:none}
.hc-faq details[open] summary::after{content:"–"}
.hc-faq details p{margin:0;padding:0 20px 18px;color:var(--muted);font-size:14px;line-height:1.8}
.hc-empty{display:none;color:var(--muted);font-size:15px;padding:30px 0;text-align:center}
/* 质保 / 安全 */
.hc-grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hc-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:24px}
.hc-card h3{margin:0 0 12px;font-size:19px}
.hc-card ul{margin:0;padding-left:20px;color:var(--muted);font-size:14px;line-height:1.95}
.hc-card li{margin-bottom:6px}
.hc-contact{background:#edf0e5;border-radius:var(--radius);padding:clamp(28px,4vw,46px);display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.hc-contact h2{font-size:clamp(24px,3.4vw,34px);letter-spacing:-.04em;margin:0 0 10px}
.hc-contact p{color:#424c41;margin:0;font-size:15px;line-height:1.7;max-width:560px}
.hc-contact .btns{display:flex;gap:12px;flex-wrap:wrap}
.hc-toc{position:sticky;top:14px}
.hc-layout{display:grid;grid-template-columns:200px 1fr;gap:34px;align-items:start}
.hc-toc a{display:block;padding:8px 0;font-size:14px;color:var(--muted);border-bottom:1px solid var(--line)}
.hc-toc a:hover{color:var(--ink)}
@media(max-width:900px){
  .hc-quick{grid-template-columns:repeat(2,1fr)}
  .hc-concepts,.hc-after,.hc-grid2{grid-template-columns:1fr}
  .hc-layout{grid-template-columns:1fr}
  .hc-toc{display:none}
}
@media(max-width:560px){
  .hc-quick{grid-template-columns:1fr}
  .hc-step{grid-template-columns:1fr;gap:14px;padding:20px}
  .hc-announce{flex-direction:column;align-items:flex-start}
}