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cbUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}.cb-head{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;padding:13px 16px;display:flex;align-items:center}.cb-head-info{display:flex;gap:10px;align-items:center;flex:1}.cb-avatar{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.22);display:flex;align-items:center;justify-content:center;font-weight:700}.cb-title{font-weight:700;font-size:15px}.cb-sub{font-size:12px;opacity:.85}.cb-close{background:0 0;border:0;color:#fff;font-size:24px;cursor:pointer;line-height:1;padding:2px 6px}.cb-body{flex:1;overflow-y:auto;padding:16px 14px;background:#f8f5f1}.cb-msg{margin-bottom:12px;display:flex}.cb-msg .cb-bubble{max-width:82%;padding:10px 13px;border-radius:13px;font-size:14px;line-height:1.6}.cb-bot .cb-bubble{background:#fff;border:1px solid var(--line);border-top-left-radius:4px}.cb-user{justify-content:flex-end}.cb-user .cb-bubble{background:var(--brand);color:#fff;border-top-right-radius:4px}.cb-link{color:var(--brand);text-decoration:underline;cursor:pointer}.cb-typing{display:inline-flex;gap:4px}.cb-typing span{width:7px;height:7px;border-radius:50%;background:#c9bda9;animation:cbBlink 1.2s infinite}.cb-typing span:nth-child(2){animation-delay:.2s}.cb-typing span:nth-child(3){animation-delay:.4s}@keyframes cbBlink{0%,100%,60%{opacity:.3}30%{opacity:1}}.cb-quick{display:flex;gap:8px;overflow-x:auto;padding:10px 12px;background:#fff;border-top:1px solid var(--line);flex-wrap:wrap}.cb-chip{flex:none;border:1px solid var(--line);background:#faf7f2;color:var(--ink-2);border-radius:999px;padding:6px 13px;font-size:13px;cursor:pointer}.cb-chip:hover{border-color:var(--brand);color:var(--brand)}.cb-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:#fff}.cb-input input{flex:1;border:1px solid var(--line);border-radius:999px;padding:10px 16px;font-size:14px}.cb-input input:focus{outline:0;border-color:var(--brand)}.cb-input button{background:var(--brand);color:#fff;border:0;border-radius:999px;padding:0 20px;font-size:14px;font-weight:600;cursor:pointer}.cb-input button:hover{background:var(--brand-d)}@media (max-width:920px){.hero{padding:134px 0 64px}.hero h1{font-size:34px}.hero-logo{width:72px;height:72px;border-radius:16px}.price-grid{grid-template-columns:1fr;max-width:460px}.buy-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:2fr 1fr 1fr;gap:18px}}@media (max-width:640px){section{padding:52px 0}.hero{padding:118px 0 56px}.hero h1{font-size:30px}.dl-grid{grid-template-columns:1fr}.nav-links{display:none;position:absolute;top:62px;left:0;right:0;background:#fff;flex-direction:column;padding:14px 20px;gap:14px;border-bottom:1px solid var(--line)}.nav-links.open{display:flex}.nav-burger{display:block}.qr-row{flex-direction:column;align-items:center}.cb-win{right:10px;bottom:80px}.footer-grid{grid-template-columns:2fr 1fr 1fr;gap:12px}.footer h4{font-size:13px}.footer .brand-desc,.footer a{font-size:12px}}
/* ?v=1.2.848 功能板块紧凑化：压缩留白/行距/投影（内容与结构不变，桌面+移动端同步） */
#features{padding:36px 0 18px}
.feat-group{padding:12px 0 8px}
.fg-head{padding-bottom:6px;margin-bottom:10px}
.fg-items{gap:12px}
.feat-row{gap:16px;padding-bottom:14px}
.feat-text h4{font-size:21px;margin-bottom:6px}
.fi-tag{margin-bottom:5px;padding:2px 8px}
.feat-desc{line-height:1.65}
#features .sec-sub{margin-bottom:10px}
.feat-shot img{box-shadow:8px 8px 18px rgba(31,35,40,.22),18px 18px 40px rgba(31,35,40,.16),36px 36px 72px rgba(31,35,40,.12)}
@media (max-width:1100px){.feat-text h4{font-size:19px}}
@media (max-width:920px){.feat-text h4{font-size:17px}}
@media (max-width:640px){.fg-items{gap:10px}.feat-row{padding-bottom:12px}}