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18px;font-family:var(--font-mono);font-size:13px;color:#0f766e;overflow-x:auto;white-space:pre}.dl__sys{margin-top:14px;font-size:13px;color:var(--text-dim)}.faq__list{display:grid;gap:12px;max-width:820px}.faq__item{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);overflow:hidden;transition:border-color .2s ease;box-shadow:var(--shadow-sm)}.faq__item[open]{border-color:#2563eb73}.faq__item summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:600;font-size:15.5px;color:var(--text);display:flex;align-items:center;gap:14px;user-select:none}.faq__item summary::-webkit-details-marker{display:none}.faq__item summary:before{content:"Q";color:var(--primary);font-weight:700;font-size:14px;flex-shrink:0}.faq__item summary:after{content:"+";margin-left:auto;font-size:20px;color:var(--text-dim);transition:transform .2s ease}.faq__item[open] summary:after{transform:rotate(45deg);color:var(--primary)}.faq__answer{padding:0 22px 20px 50px;color:var(--text-dim);font-size:14.5px}.faq__answer a{text-decoration:underline}.footer{border-top:1px solid var(--line);padding:52px 0 60px;color:var(--text-dim);font-size:13.5px;background:radial-gradient(ellipse at 18% 0%,rgba(37,99,235,.045),transparent 55%),var(--bg-alt)}.footer__inner{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}.footer__inner>div:first-child{display:grid;gap:4px;align-content:start}.footer__brand{font-size:21px;font-weight:700;color:var(--text)}.footer__links{display:grid;gap:6px}.footer__links a{color:var(--text-dim)}.footer__links a:hover{color:var(--primary)}.footer__ver{font-size:11px;letter-spacing:.1em}.support{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:900;width:218px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 36px #0f172a24;padding:16px 16px 18px;animation:rise .4s cubic-bezier(.2,.7,.2,1) both}.support__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.support__title{font-size:15px;font-weight:700;color:var(--text)}.support__close{background:none;border:none;color:var(--text-dim);font-size:18px;line-height:1;width:26px;height:26px;border-radius:7px;transition:background .15s ease,color .15s ease}.support__close:hover{background:var(--bg-alt);color:var(--text)}.support__label{font-size:12px;color:var(--text-dim);margin-bottom:6px}.support__wechat{width:100%;display:flex;align-items:center;justify-content:space-between;gap:8px;background:var(--primary-soft);border:1px dashed rgba(37,99,235,.4);border-radius:9px;padding:9px 12px;transition:border-color .15s ease,background .15s ease}.support__wechat:hover{border-color:var(--primary);background:#2563eb1f}.support__wechat-id{font-size:14px;font-weight:600;color:var(--primary);font-family:var(--font-mono);word-break:break-all;text-align:left}.support__copy{font-size:11.5px;color:var(--text-dim);white-space:nowrap}.support__wechat:hover .support__copy{color:var(--primary)}.support__qr-wrap{margin-top:12px;background:#fff;border:1px solid var(--line-soft);border-radius:10px;padding:8px}.support__qr{display:block;width:100%;border-radius:6px}.support__qr-tip{margin-top:8px;text-align:center;font-size:12px;color:var(--text-dim)}.support__fab{position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:900;width:48px;height:48px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--primary);display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px #0f172a29;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.support__fab:hover{transform:translateY(-50%) scale(1.08);border-color:#2563eb66;box-shadow:0 14px 32px #2563eb3d}.support__toast{position:fixed;right:22px;top:calc(50% + 120px);z-index:950;background:#1f2937eb;color:#fff;font-size:13px;padding:9px 16px;border-radius:999px;box-shadow:var(--shadow-md);animation:rise .3s cubic-bezier(.2,.7,.2,1) both}@media(max-width:768px){.section{padding:64px 0}.nav__burger{display:flex}.nav__links{position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 6vw 18px;display:none;box-shadow:var(--shadow-md)}.nav__links.open{display:flex}.nav__links li{padding:12px 0;border-bottom:1px solid var(--line-soft)}.nav__links li:last-child{border-bottom:none}.nav__links a{font-size:16px}.nav__cta{margin:12px 0 0}.nav__group{padding:0}.nav__group-btn{width:100%;justify-content:space-between;font-size:16px;font-weight:600;padding:14px 4px;border-radius:0;background:none}.nav__group-btn.active{background:none;color:var(--primary)}.nav__caret{margin-left:auto}.nav__dropdown{position:static;transform:none;opacity:1;visibility:visible;min-width:0;border:none;box-shadow:none;background:transparent;padding:0 0 8px 10px;gap:0;display:none;transition-delay:0s}.nav__group.open .nav__dropdown{display:grid}.nav__dropdown-head{display:none}.nav__dropdown-item{padding:11px 14px;font-size:15px;white-space:normal}.nav__group:hover .nav__dropdown,.nav__group:focus-within .nav__dropdown{transform:none}.hero{padding-top:calc(var(--nav-h) + 44px);overflow-x:clip}.hero__grid{grid-template-columns:1fr;gap:40px}.features__grid{grid-template-columns:1fr}.compare__table{display:none}.compare__cards{display:grid;gap:16px}.compare-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);padding:20px;box-shadow:var(--shadow-sm)}.compare-card__head{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line-soft);padding-bottom:12px;margin-bottom:12px}.compare-card__row{display:flex;justify-content:space-between;gap:14px;padding:7px 0;font-size:14px}.compare-card__row .name{color:var(--text-dim)}.compare-card__row--child{background:#2563eb08;border-radius:6px}.compare-card__row--child .name{padding-left:18px;font-size:13px}.purchase__layout,.purchase__plans{grid-template-columns:1fr}.vault{position:static}.steps,.dl__files{grid-template-columns:1fr}.qr-box{padding:26px 20px}.support{right:12px;width:190px;padding:14px}.support__fab{right:12px;width:44px;height:44px}.support__toast{right:12px}}