:root{--bg:#ffffff;--bg-alt:#f8fafc;--card:#ffffff;--border:#e2e8f0;--text:#0f172a;--muted:#64748b;--accent:#165DFF;--accent-2:#00b4ff;--radius:14px;--maxw:1100px;--card-shadow:0 4px 20px rgba(15, 23, 42, 0.06)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,segoe ui,microsoft yahei,pingfang sc,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}.container-narrow{max-width:760px}.center{text-align:center}.muted{color:var(--muted)}a{color:inherit;text-decoration:none}.nav{position:sticky;top:0;z-index:50;background:#fff;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(226,232,240,.9)}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}.logo-mark{width:26px;height:26px;border-radius:7px;object-fit:contain;filter:drop-shadow(0 0 8px rgba(22,93,255,.3))}.logo-text{color:#0f172a;font-family:orbitron,rajdhani,-apple-system,BlinkMacSystemFont,segoe ui,sans-serif;letter-spacing:1px;font-weight:700}.nav-links{display:flex;align-items:center;gap:28px;font-size:15px}.nav-links a{color:#334155;font-weight:600;transition:color .2s}.nav-links a:hover{color:var(--accent)}.lang-toggle{background:#f1f5f9;border:1px solid #e2e8f0;color:#334155;width:auto;height:36px;padding:0 12px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600;transition:all .2s ease;font-family:inherit}.lang-toggle:hover{border-color:var(--accent);color:var(--accent)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-weight:600;padding:10px 20px;border-radius:10px;transition:transform .15s,box-shadow .2s;box-shadow:0 6px 20px rgba(22,93,255,.3)}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(22,93,255,.4)}.btn-sm{padding:7px 16px;font-size:14px}.btn-lg{padding:15px 32px;font-size:17px;border-radius:12px}.btn-ghost{background:0 0;color:var(--text);border:1px solid var(--border);box-shadow:none}.btn-ghost:hover{border-color:var(--accent);box-shadow:none;color:var(--accent)}.btn:not(.btn-ghost){color:#fff!important;font-weight:600}.download-page-hero{position:relative;min-height:calc(100vh - 64px);display:flex;align-items:center;justify-content:center;overflow:hidden;background-color:#f8fafc;background-image:linear-gradient(180deg,rgba(22,93,255,8%) 0%,transparent 60%),repeating-linear-gradient( 135deg,transparent,transparent 80px,rgba(22,93,255,6%) 80px,rgba(22,93,255,6%) 81px )}.download-page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(15,23,42,3%) 1px,transparent 1px),linear-gradient(90deg,rgba(15,23,42,3%) 1px,transparent 1px);background-size:40px 40px;mask-image:radial-gradient(ellipse at center,black 30%,transparent 80%);pointer-events:none}.download-page-hero::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:120%;height:40%;background:linear-gradient(to top,rgba(0,180,255,.1),transparent 70%);pointer-events:none}.download-page-content{position:relative;z-index:2;text-align:center;color:#0f172a;padding:40px 20px}.hero-header-row{display:flex;align-items:center;justify-content:center;gap:56px;margin-bottom:32px;flex-wrap:wrap}.download-page-logo{width:140px;height:140px;filter:drop-shadow(0 4px 16px rgba(22,93,255,.15));object-fit:contain;flex-shrink:0;margin:0}.title-group{text-align:left}.download-page-title{font-size:56px;font-weight:800;line-height:1.25;text-align:left;margin:0;color:#0f172a;white-space:nowrap}.download-page-title .brand-name{font-family:orbitron,rajdhani,sans-serif;letter-spacing:2px;font-weight:800;color:var(--accent);-webkit-text-fill-color:var(--accent)}.download-page-title .title-rest{color:#0f172a;font-weight:700;margin:0 8px}.download-page-subtitle-primary{font-size:22px;font-weight:500;color:#334155;margin:12px 0 0;line-height:1.3;letter-spacing:.5px}.download-page-subtitle{font-size:17px;color:#475569;margin:0 auto 40px;max-width:720px;line-height:1.8;text-align:center}.download-page-subtitle .brand-link{color:var(--accent);font-weight:600}.download-page-subtitle .brand-link:hover{color:#0e42c9;text-decoration:underline}.main-download-btn{display:inline-flex;align-items:center;gap:14px;padding:24px 80px;font-size:26px;font-weight:600;color:#fff;background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 100%);border-radius:999px;text-decoration:none;box-shadow:0 8px 28px rgba(22,93,255,.3);transition:all .3s ease;border:none;cursor:pointer;font-family:inherit}.main-download-btn:hover{transform:translateY(-2px);box-shadow:0 12px 36px rgba(22,93,255,.4)}.main-download-btn svg{width:30px;height:30px}.download-version-info{margin-top:20px;font-size:16px;color:#475569;font-weight:500}.download-more-link{display:inline-block;margin-top:12px;color:var(--accent);font-size:15px;font-weight:500;text-decoration:none;border-bottom:1px solid rgba(22,93,255,.3);transition:all .2s}.download-more-link:hover{color:#0e42c9;border-bottom-color:rgba(14,66,201,.8)}.platform-list{display:flex;justify-content:center;align-items:flex-end;gap:48px;margin-top:60px;flex-wrap:wrap}.platform-item{position:relative;display:flex;flex-direction:column;align-items:center;gap:10px;text-decoration:none;transition:transform .2s ease;padding-bottom:4px;cursor:pointer}.platform-item:hover{transform:translateY(-4px)}.platform-img{display:block;width:140px;height:140px;object-fit:contain;border-radius:12px;filter:brightness(.25)saturate(.5);transition:filter .2s,box-shadow .2s}.platform-item:hover .platform-img{filter:brightness(.15)saturate(.8);box-shadow:0 8px 20px rgba(0,0,0,.1)}.platform-item span:not(.tooltip){color:#334155;font-size:15px;font-weight:500;line-height:1}.platform-item .tooltip{position:absolute;bottom:calc(100% + 10px);left:50%;transform:translateX(-50%);background:#fff;color:#334155;padding:22px 18px;border-radius:12px;font-size:15px;font-weight:500;line-height:1.6;min-width:200px;max-width:360px;white-space:normal;text-align:center;border:1px solid #e2e8f0;box-shadow:0 10px 32px rgba(0,0,0,.12);opacity:0;visibility:hidden;transition:all .2s ease;pointer-events:none;z-index:20}.platform-item .tooltip::after{content:"";position:absolute;top:100%;left:50%;transform:translateX(-50%);border:8px solid transparent;border-top-color:#fff}.platform-item:hover .tooltip{opacity:1;visibility:visible;bottom:calc(100% + 14px)}.platform-item .tooltip strong{color:var(--accent);font-weight:700;display:block;margin-top:6px;font-size:16px}.hero-terminal{margin-top:36px;width:100%;max-width:600px;margin-left:auto;margin-right:auto;text-align:left}.terminal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.terminal-title{font-size:14px;font-weight:600;color:var(--text)}.terminal-tip{font-size:12px;color:var(--muted)}.terminal-tabs{display:flex;gap:2px;margin-bottom:0;border-bottom:1px solid var(--border)}.terminal-tab{background:0 0;border:none;padding:8px 14px;font-size:13px;color:var(--muted);cursor:pointer;border-radius:6px 6px 0 0;transition:all .15s;font-family:inherit}.terminal-tab.active{color:var(--accent);background:rgba(22,93,255,8%);font-weight:500}.terminal-code-box{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--bg-alt);border:1px solid var(--border);border-top:none;border-radius:0 0 10px 10px;padding:14px 18px;font-family:jetbrains mono,Consolas,Monaco,courier new,monospace;font-size:14px;color:var(--text)}.terminal-code-box code{flex:1;overflow-x:auto;white-space:nowrap}.copy-btn{flex-shrink:0;background:0 0;border:none;color:var(--muted);cursor:pointer;padding:4px;border-radius:6px;transition:all .15s;display:flex;align-items:center;justify-content:center}.copy-btn:hover{color:var(--accent);background:rgba(22,93,255,.1)}.terminal-footer{margin:10px 0 0;font-size:12px;color:var(--muted);text-align:center}.terminal-footer code{font-family:inherit;background:var(--bg-alt);padding:2px 6px;border-radius:4px;font-size:12px;color:var(--text)}.section{padding:90px 0}.section-alt{background:var(--bg-alt)}.section-title{font-size:clamp(26px,4vw,40px);font-weight:700;text-align:center;letter-spacing:-.01em;margin-bottom:14px}.section-sub{text-align:center;color:var(--muted);font-size:17px;margin-bottom:54px}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}.feature-card{text-align:center;padding:32px 20px;border-radius:var(--radius);transition:transform .2s,background .2s}.feature-card:hover{transform:translateY(-4px);background:var(--bg-alt)}.feature-icon{width:80px;height:80px;margin:0 auto 24px;display:flex;align-items:center;justify-content:center;font-size:36px;background:var(--bg-alt);border-radius:20px;transition:background .2s}.feature-card h3{font-size:20px;margin-bottom:12px;font-weight:700}.feature-card p{font-size:15px;line-height:1.7;color:var(--muted)}.requirements-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:900px;margin:0 auto}.spec-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:32px;box-shadow:var(--card-shadow);transition:transform .2s,border-color .2s,box-shadow .2s}.spec-card:hover{transform:translateY(-4px);border-color:var(--accent)}.spec-card.recommended{border-color:var(--accent);position:relative}.spec-card.recommended::before{content:"推荐";position:absolute;top:-12px;right:24px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:999px}.spec-card h3{font-size:22px;margin-bottom:20px;text-align:center}.spec-list{list-style:none;display:flex;flex-direction:column;gap:14px}.spec-item{display:flex;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:1px solid var(--border)}.spec-item:last-child{border-bottom:none;padding-bottom:0}.spec-label{color:var(--muted);font-size:15px;flex-shrink:0}.spec-value{font-size:15px;text-align:right;font-weight:500}.faq{display:flex;flex-direction:column;max-width:900px;margin:0 auto}.faq-item{background:0 0;border:none;border-bottom:1px solid var(--border);border-radius:0;padding:22px 0;transition:border-color .2s}.faq-item summary{cursor:pointer;font-weight:500;font-size:17px;list-style:none;display:flex;justify-content:space-between;align-items:center;transition:color .2s}.faq-item summary:hover{color:var(--accent)}.faq-item summary::after{content:"+";color:var(--muted);font-size:24px;font-weight:300;transition:transform .2s,color .2s}.faq-item[open] summary::after{content:"−"}.faq-item p{margin-top:16px;color:var(--muted);line-height:1.7;padding-bottom:4px}.community-wrap{display:flex;flex-direction:column;align-items:center;gap:32px}.community-qrcode img{width:160px;height:160px;border-radius:12px;background:#fff;padding:8px;box-shadow:0 4px 20px rgba(0,0,0,6%)}.community-links{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}.steps-compact{display:flex;gap:32px;margin-bottom:32px}.step-compact{flex:1;display:flex;align-items:flex-start;gap:12px}.step-compact-num{flex-shrink:0;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-top:2px}.step-compact h4{margin:0 0 4px;font-size:16px;color:var(--text)}.step-compact p{margin:0;font-size:13px;line-height:1.5;color:var(--muted)}.download-cta-section{background:linear-gradient(180deg,#ffffff 0%,#f0f7ff 100%)}.footer{border-top:1px solid var(--border);padding:50px 0 30px;background:var(--bg)}.footer-inner{display:flex;justify-content:space-between;align-items:flex-start;gap:48px;flex-wrap:wrap;margin-bottom:30px;width:100%}.footer-inner>div:first-child{flex:auto;min-width:260px;max-width:520px}.footer-logo{margin-bottom:12px;display:inline-flex}.footer-inner p{max-width:520px;margin-top:12px;font-size:14px;color:var(--muted);line-height:1.7}.footer-links{display:flex;flex-direction:column;gap:10px;min-width:140px;text-align:right}.footer-links a{color:var(--muted);font-size:14px;transition:color .2s ease}.footer-links a:hover{color:var(--accent)}.copyright{font-size:13px;padding-top:20px;border-top:1px solid var(--border);color:var(--muted);text-align:left}.brand-link{color:var(--accent);font-weight:700;text-decoration:none;transition:color .2s ease}.brand-link:hover{color:var(--accent-2);text-decoration:underline}.word-rotator{display:inline-block;width:4.2em;white-space:nowrap;text-align:left;vertical-align:bottom;position:relative;color:#0f172a;font-weight:700}html[lang^=en] .word-rotator{width:8.5em}.word-rotator.animating{animation:slideOutUp .22s ease forwards}.word-rotator.animating-in{animation:slideInDown .22s ease forwards}@keyframes slideOutUp{from{transform:translateY(0);opacity:1}to{transform:translateY(100%);opacity:0}}@keyframes slideInDown{from{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}.menu-toggle{display:none;background:0 0;border:none;cursor:pointer;width:36px;height:36px;flex-direction:column;justify-content:center;align-items:center;gap:5px;padding:0;z-index:60}.menu-toggle span{display:block;width:22px;height:2px;background:#0f172a;border-radius:2px;transition:all .3s ease}.mobile-menu{display:none;position:absolute;top:64px;left:0;right:0;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(226,232,240,.9);padding:12px 24px 20px;flex-direction:column;gap:4px;z-index:40}.mobile-menu a{color:#334155;font-size:15px;padding:12px 0;border-bottom:1px solid #e2e8f0;text-decoration:none}.mobile-menu a:last-child{border-bottom:none}.mobile-menu.open{display:flex}@media(max-width:960px){.feature-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:900px){.requirements-grid{grid-template-columns:1fr}.steps-compact{flex-direction:column;gap:16px}.download-page-title{font-size:32px}.main-download-btn{padding:16px 40px;font-size:18px}.platform-list{gap:24px}.hero-header-row{gap:24px}}@media(max-width:768px){.menu-toggle{display:flex}.nav-links a:not(.btn):not(#langToggle){display:none}.nav-links{gap:10px}.download-page-hero{min-height:auto;padding:60px 0 80px}.download-page-logo{width:100px;height:100px}.download-page-title{font-size:42px;text-align:center}.download-page-subtitle-primary{font-size:18px;text-align:center}.download-page-subtitle{font-size:16px;line-height:1.6;margin-bottom:32px}.hero-header-row{gap:28px;margin-bottom:24px;flex-direction:column;text-align:center}.title-group{text-align:center}.main-download-btn{width:100%;max-width:320px;padding:18px 0;font-size:20px;justify-content:center}.platform-list{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 16px;margin-top:48px;width:100%;max-width:480px;margin-left:auto;margin-right:auto}.platform-item{flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center}.platform-img{width:120px;height:120px}.footer-inner{flex-direction:column;align-items:flex-start;gap:28px}.footer-inner>div:first-child{width:100%;max-width:100%}.footer-links{width:100%;min-width:auto;text-align:left;gap:12px}.footer-links a{padding:10px 0;border-bottom:1px solid var(--border)}.footer-links a:last-child{border-bottom:none}.copyright{text-align:left;padding-top:16px}.platform-item .tooltip{display:none}}.footer-inner{display:flex!important;justify-content:space-between!important;align-items:flex-start!important}.footer-inner>div:first-child{order:1;text-align:left}.footer-links{order:2;text-align:right}.download-version-info{margin-top:20px;text-align:center}.download-version-info{margin-top:18px;text-align:center}.free-text{display:inline-block;margin-top:8px;font-size:16px;font-weight:800;letter-spacing:1px;background:linear-gradient(135deg,#165DFF,#00b4ff,#6d5efc);background-size:200%;-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-stroke:.3px rgba(22,93,255,.2);filter:drop-shadow(0 0 2px rgba(22,93,255,.2));animation:freeTextFlow 3.5s ease-in-out infinite}@keyframes freeTextFlow{0%{background-position:0}50%{background-position:100%}100%{background-position:0}}