:root{--bg:#141414;--panel:#1b1b22;--line:rgba(255,255,255,.08);--text:#f6efe4;--muted:#c9beaf;--accent:#b61e2f;--cta:#f24b3a}
*{box-sizing:border-box}
html,body{margin:0;background:radial-gradient(circle at top,#231316 0,#141414 42%),var(--bg);color:var(--text);font-family:"Noto Sans SC",system-ui,sans-serif}
a{color:inherit;text-decoration:none}
.topbar,.page,.footer{width:min(1180px,calc(100% - 32px));margin:0 auto}
.topbar{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 0;background:linear-gradient(180deg,rgba(20,20,20,.96),rgba(20,20,20,.76));backdrop-filter:blur(14px)}
.brand{display:flex;align-items:center;gap:12px}.brand img{width:50px;height:50px;object-fit:contain}.brand strong{display:block;font-size:18px}.brand span,.eyebrow,.footer p{color:var(--muted)}
nav{display:flex;gap:14px;flex-wrap:wrap}
.topbar-cta,.btn,.category-card a,.next-card{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:999px;font-weight:700;border:1px solid transparent}
.topbar-cta,.btn-primary,.category-card a{background:linear-gradient(135deg,var(--accent),var(--cta));color:#fff}
.btn-secondary{background:rgba(255,255,255,.04);border-color:var(--line)}
.page{padding-bottom:8px}
.hero-help-center{display:grid;grid-template-columns:1.06fr .94fr;gap:18px;padding:28px 0 8px;align-items:stretch}
.help-intro,.help-search,.category-card,.problem-card,.faq-card,.next-card{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));border:1px solid var(--line);border-radius:22px;padding:18px}
.help-intro h1{font-size:clamp(34px,5vw,60px);line-height:1.04;margin:.1em 0 .35em}
.help-intro p{color:var(--muted);line-height:1.76}
.hero-badge{display:inline-flex;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);margin-bottom:12px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.help-search{display:flex;flex-direction:column;justify-content:center;gap:16px}
.search-bar{min-height:110px;border-radius:22px;border:1px dashed rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;color:#ffd8b2;font-size:18px;background:rgba(255,255,255,.03)}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip-row span{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted)}
.section{padding:22px 0}
.section-categories,.section-gallery,.section-shortcuts,.section-problems,.section-faq,.section-next{display:grid;gap:16px}
.section-categories{grid-template-columns:repeat(5,minmax(0,1fr))}
.category-card{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.category-card h3,.problem-card h3,.next-card h3{margin:.1em 0 .25em}
.category-card p,.problem-card li,.faq-card p,.next-card p{color:var(--muted);line-height:1.7}
.section-gallery{grid-template-columns:repeat(3,minmax(0,1fr))}
.gallery-card,.shortcut-card{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));border:1px solid var(--line);border-radius:22px;padding:14px}
.gallery-card img{width:100%;height:180px;object-fit:cover;border-radius:16px;border:1px solid var(--line);display:block;margin-bottom:12px}
.gallery-card h3{margin:.1em 0 .35em}
.gallery-card p{color:var(--muted);line-height:1.65;margin:0}
.shortcut-card{padding:0;overflow:hidden;text-align:center}
.shortcut-card a{display:flex;align-items:center;justify-content:center;min-height:84px;padding:18px;font-weight:800;background:linear-gradient(135deg,rgba(182,30,47,.9),rgba(242,75,58,.9));color:#fff}
.section-problems{grid-template-columns:repeat(5,minmax(0,1fr))}
.problem-card ul{margin:0;padding-left:18px}
.section-faq{grid-template-columns:repeat(2,minmax(0,1fr))}
.faq-card{display:grid;gap:8px}
.faq-card details{padding:10px 0;border-bottom:1px solid var(--line)}
.faq-card summary{cursor:pointer;font-weight:700}
.faq-card p{margin:10px 0 0}
.section-next{grid-template-columns:repeat(3,minmax(0,1fr))}
.next-card{border-radius:22px;background:rgba(255,255,255,.04)}
.footer{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:28px 0 36px;border-top:1px solid var(--line);margin-top:24px}
.footer-links{display:flex;gap:14px;flex-wrap:wrap}
@media (max-width:1080px){
  .section-categories,.section-gallery,.section-shortcuts,.section-problems{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section-faq,.section-next{grid-template-columns:1fr}
  .hero-help-center{grid-template-columns:1fr}
  .topbar{position:static;flex-wrap:wrap}
  .footer{flex-direction:column}
}
@media (max-width:640px){
  .topbar,.page,.footer{width:min(100% - 20px,1180px)}
  .cta-row,.footer-links{flex-direction:column;align-items:stretch}
  .topbar-cta,.btn,.category-card a,.next-card{width:100%}
  .section-categories,.section-gallery,.section-shortcuts,.section-problems{grid-template-columns:1fr}
}