/* 面翼 MeetsWin · 多页官网共享样式
   布局：左侧固定导航 + 右侧主内容区（参考即答侠） */
:root{
  --bg:#0b0f14; --bg2:#0f1419; --bg3:#151b23;
  --card:#141a22; --card2:#1a212c;
  --border:#232b36; --border2:#2e3846;
  --text:#e8edf3; --text2:#9aa7b6; --text3:#6b7787;
  --green:#10b981; --green2:#059669; --green-soft:rgba(16,185,129,.12);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.6;display:flex;min-height:100vh}
a{color:inherit;text-decoration:none}

/* ===== 左侧导航 ===== */
.sidenav{
  position:fixed;top:0;left:0;bottom:0;width:232px;
  background:var(--bg2);border-right:1px solid var(--border);
  display:flex;flex-direction:column;padding:20px 12px;z-index:100;
}
.sidenav-logo{display:flex;align-items:center;gap:10px;padding:6px 10px 20px}
.sidenav-logo .mark{width:36px;height:36px;border-radius:9px;background:linear-gradient(135deg,#10b981,#059669);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800}
.sidenav-logo .name{font-weight:700;font-size:16px}
.sidenav-nav{flex:1;display:flex;flex-direction:column;gap:2px;overflow-y:auto}
.nav-item{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;
  color:var(--text2);font-size:14px;transition:.15s;position:relative;
}
.nav-item:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-item.active{color:var(--green);background:var(--green-soft);font-weight:600}
.nav-item.active::before{content:'';position:absolute;left:-12px;top:8px;bottom:8px;width:3px;border-radius:2px;background:var(--green)}
.nav-item .icon{width:20px;text-align:center;flex-shrink:0}
.nav-item .tag{font-size:10px;padding:1px 6px;border-radius:10px;background:rgba(245,158,11,.18);color:#f59e0b;margin-left:auto}
.sidenav-footer{border-top:1px solid var(--border);padding-top:14px;display:flex;flex-direction:column;gap:2px}
.sidenav-footer .nav-item{font-size:13px}

/* ===== 主内容区 ===== */
.main{margin-left:232px;flex:1;padding:48px 56px;max-width:1100px}
.main.wide{max-width:none}
.page-head{margin-bottom:36px}
.page-head .crumb{color:var(--text3);font-size:13px;margin-bottom:8px}
.page-head h1{font-size:36px;font-weight:800;letter-spacing:-.5px;margin-bottom:10px}
.page-head p{color:var(--text2);font-size:16px;max-width:640px}

.hero{display:flex;flex-direction:column;gap:20px;padding:24px 0 40px}
.hero h1{font-size:48px;line-height:1.15;font-weight:800;letter-spacing:-1px}
.hero h1 .g{color:var(--green)}
.hero p{font-size:18px;color:var(--text2);max-width:620px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:10px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:.2s}
.btn-green{background:var(--green);color:#fff}
.btn-green:hover{background:var(--green2);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border2)}
.btn-ghost:hover{border-color:var(--green);color:var(--green)}

.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:1fr 1fr}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:26px}
.card:hover{border-color:var(--green)}
.card h3{font-size:17px;margin-bottom:8px}
.card p{font-size:14px;color:var(--text2)}
.card .icon-wrap{width:44px;height:44px;border-radius:11px;background:var(--green-soft);color:var(--green);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.card.highlight{background:linear-gradient(180deg,rgba(16,185,129,.08),var(--card));border-color:var(--green)}

.section-title{font-size:22px;font-weight:700;margin:40px 0 16px}

/* 价格 */
.price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-top:20px}
.price-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px 18px;display:flex;flex-direction:column;position:relative}
.price-card.hot{border-color:var(--green);background:linear-gradient(180deg,rgba(16,185,129,.1),var(--card))}
.price-tag{position:absolute;top:-11px;left:50%;transform:translateX(-50%);padding:2px 12px;background:var(--green);color:#fff;font-size:11px;font-weight:600;border-radius:100px}
.price-card h4{font-size:15px;color:var(--text2);font-weight:600}
.price-num{font-size:32px;font-weight:800;margin:8px 0 2px}
.price-num small{font-size:13px;font-weight:500;color:var(--text3)}
.price-desc{font-size:12px;color:var(--text3);margin-bottom:14px}
.price-list{list-style:none;flex:1;margin-bottom:18px}
.price-list li{font-size:13px;color:var(--text2);padding:4px 0 4px 20px;position:relative}
.price-list li::before{content:'✓';position:absolute;left:0;color:var(--green)}
.price-btn{padding:10px;border-radius:8px;border:1px solid var(--border2);background:transparent;color:var(--text);font-size:13px;font-weight:600;cursor:pointer;width:100%}
.price-card.hot .price-btn{background:var(--green);color:#fff;border-color:var(--green)}
.price-btn:hover{border-color:var(--green)}

/* FAQ */
.faq-item{background:var(--card);border:1px solid var(--border);border-radius:12px;margin-bottom:8px;overflow:hidden}
.faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:15px}
.faq-q span:last-child{color:var(--green);transition:.2s}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:.3s;color:var(--text2);font-size:14px}
.faq-item.open .faq-a{padding:0 20px 16px;max-height:400px}
.faq-item.open .faq-q span:last-child{transform:rotate(45deg)}

/* 步骤 */
.steps{counter-reset:step}
.step{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--border)}
.step-num{width:36px;height:36px;border-radius:50%;background:var(--green-soft);color:var(--green);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.step h4{font-size:16px;margin-bottom:4px}
.step p{font-size:14px;color:var(--text2)}

.badge{display:inline-block;padding:4px 12px;background:var(--green-soft);color:var(--green);border:1px solid rgba(16,185,129,.3);border-radius:100px;font-size:12px;margin-bottom:16px}
.note{background:var(--card);border-left:3px solid var(--green);padding:14px 18px;border-radius:0 10px 10px 0;color:var(--text2);font-size:14px;margin:16px 0}
.footer{margin-top:60px;padding-top:24px;border-top:1px solid var(--border);color:var(--text3);font-size:12px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* 响应式 */
@media(max-width:900px){
  body{flex-direction:column}
  .sidenav{position:relative;width:100%;flex-direction:row;overflow-x:auto;bottom:auto;border-right:none;border-bottom:1px solid var(--border);padding:10px}
  .sidenav-logo{padding:4px 10px}
  .sidenav-nav{flex-direction:row;gap:4px}
  .nav-item.active::before{display:none}
  .sidenav-footer{display:none}
  .main{margin-left:0;padding:24px 20px}
  .hero h1{font-size:32px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
}