:root{--blue:#1478F2;--blue2:#2F8CFF;--deep:#075DC9;--ink:#172033;--text:#3E4859;--muted:#6F7A89;--soft:#98A1AF;--sub:#F7FAFF;--pale:#EDF5FF;--gray:#F5F6F8;--line:rgba(20,120,242,.12);--gline:rgba(30,50,70,.08);--shadow:0 14px 38px rgba(21,67,118,.08);--bshadow:0 16px 42px rgba(20,120,242,.15);--max:1280px;--nav:74px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell,.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}.skip{position:fixed;top:-70px;left:16px;z-index:999;background:#fff;color:var(--blue);padding:8px 12px;border-radius:10px}.skip:focus{top:10px}.site-header{height:var(--nav);position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);border-bottom:1px solid var(--gline);backdrop-filter:blur(12px)}.desktop{height:100%;display:grid;grid-template-columns:minmax(250px,1fr) auto minmax(250px,1fr);gap:18px;align-items:center}.brand{display:flex;align-items:center;gap:10px}.brand img,.footbrand img{max-width:150px;max-height:44px;object-fit:contain}.brand strong{font-size:24px;color:var(--blue)}.brand em{font-style:normal;font-size:12px;color:var(--deep);background:var(--pale);padding:3px 9px;border-radius:999px}.desktop nav,.tools{display:flex;gap:4px;white-space:nowrap}.desktop nav a,.tools a,.tools button,.mobile button,.small-link,.paneltop button{min-height:44px;padding:0 11px;border-radius:12px;display:inline-flex;align-items:center;border:0;background:transparent;color:#465268;font-weight:700;cursor:pointer}.desktop nav a:hover,.desktop nav a.on,.tools a:hover,.tools button:hover{background:var(--pale);color:var(--blue)}.tools{justify-self:end}.mobile{display:none;height:100%;grid-template-columns:56px 1fr 56px;align-items:center}.mobile .brand{justify-self:center}.mobile button,.small-link{justify-content:center;background:#fff;border:1px solid var(--gline)}main{min-height:60vh}.intro{padding:62px 0 32px}.crumb{display:flex;gap:8px;color:var(--soft);font-size:13px}.kicker,small.label{font-size:12px;color:var(--blue);font-weight:800;letter-spacing:.12em}.intro h1{margin:.1em 0;font-size:clamp(38px,6vw,68px);line-height:1.08;color:var(--ink);letter-spacing:-.04em}.intro p{max-width:860px;font-size:18px;color:var(--muted)}.section{padding:68px 0}.alt{background:var(--sub)}.pale{background:var(--pale)}.head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:26px}.head h2{margin:0;color:var(--ink);font-size:clamp(28px,4vw,42px);line-height:1.15}.head p{max-width:620px;margin:0;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.cards.four{grid-template-columns:repeat(4,1fr)}.card,.topic,.step{background:#fff;border:1px solid var(--gline);border-radius:18px;padding:24px;box-shadow:0 10px 28px rgba(21,67,118,.05)}.card h3,.topic h3,.step h3{margin:8px 0;color:var(--ink)}.card p,.topic p,.step p{margin:0 0 12px;color:var(--muted)}.tag{display:inline-flex;padding:4px 10px;border-radius:999px;background:var(--pale);color:var(--deep);font-size:12px;font-weight:800}.link{color:var(--blue);font-weight:800}.link:hover{text-decoration:underline}.split{display:grid;grid-template-columns:1.05fr .95fr;gap:24px}.list article{padding:22px 0;border-top:1px solid var(--gline)}.list article:first-child{border-top:0}.list h3{color:var(--ink);margin:0 0 8px}.list p{margin:0;color:var(--muted)}.wall{display:flex;gap:12px;flex-wrap:wrap}.topic{flex:1 1 250px}.topic:nth-child(3n+1){flex-basis:340px;background:var(--pale)}.steps{counter-reset:n}.step{position:relative;margin:0 0 16px;padding-left:76px}.step:before{counter-increment:n;content:counter(n);position:absolute;left:20px;top:20px;width:38px;height:38px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}.hero{padding:34px 0 18px;background:linear-gradient(180deg,var(--sub),#fff)}.hero-grid{display:grid;grid-template-columns:.85fr 1.35fr .85fr;gap:18px}.hero-box{min-height:410px;padding:26px;border-radius:24px;background:#fff;border:1px solid var(--gline);box-shadow:var(--shadow)}.hero-box.primary{position:relative;overflow:hidden;background:linear-gradient(145deg,#0b66d4,#2f8cff);color:#fff;display:flex;flex-direction:column;justify-content:flex-end}.hero-box.primary:before{content:"";position:absolute;width:320px;height:320px;border-radius:50%;right:-100px;top:-100px;background:rgba(255,255,255,.12);pointer-events:none}.hero-box.primary h1{font-size:clamp(36px,5vw,60px);line-height:1.04;margin:0 0 16px;position:relative}.hero-box.primary p{color:#eef6ff;position:relative}.hero-box.primary .actions{position:relative;display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:14px;background:linear-gradient(135deg,#3A96FF 0%,#1478F2 55%,#0863D3 100%);color:#fff;font-weight:800;box-shadow:var(--bshadow)}.hero-box.primary .btn{background:#fff;color:var(--blue);box-shadow:none}.hero-box.primary .link{color:#fff;align-self:center}.mini{display:grid;gap:10px}.mini a{padding:13px;border-radius:13px;background:var(--sub)}.mini b,.results b{display:block;color:var(--ink)}.channel-strip{display:flex;gap:18px;overflow-x:auto;padding:14px 0}.channel-strip a{white-space:nowrap;font-weight:800;color:var(--muted)}.channel-strip a:before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--blue);margin-right:8px}.overview{display:grid;grid-template-columns:1.2fr .8fr 1fr .75fr;gap:14px}.overview article{padding:22px;border-radius:18px;border:1px solid var(--gline)}.overview article:nth-child(even){background:var(--pale)}.wide-note{padding:34px;border-radius:24px;background:var(--ink);color:#fff}.wide-note h2{font-size:34px;line-height:1.2;margin:0 0 12px}.wide-note p{color:#dce8f5}.masonry{columns:3 240px;column-gap:16px}.masonry article{break-inside:avoid;margin-bottom:16px}.route{display:flex;gap:14px;overflow-x:auto}.route article{flex:0 0 300px}.brand-band{padding:48px;border-radius:28px;background:linear-gradient(135deg,#0a5ec7,#1478f2 55%,#2f8cff);color:#fff}.brand-band h2{font-size:clamp(34px,5vw,56px);line-height:1.1;margin:0 0 18px}.brand-band p{color:#eaf3ff}.app-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:center}.phone{min-height:420px;border-radius:34px;background:linear-gradient(160deg,#d9eafe,#f7faff);display:grid;place-items:center;border:1px solid var(--line)}.phone img{max-width:90%;max-height:400px;object-fit:contain}.phone div{width:210px;height:390px;border:12px solid var(--ink);border-radius:34px;background:#fff;display:grid;place-items:center;text-align:center;color:var(--blue);font-weight:900}.safe-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.safe-box{padding:30px;border-radius:24px;background:var(--pale)}.safe-box:nth-child(2){background:#fff;border:1px solid var(--gline)}details{background:#fff;border:1px solid var(--gline);border-radius:15px;margin:10px 0;padding:0 18px}summary{cursor:pointer;padding:17px 30px 17px 0;font-weight:800;color:var(--ink);position:relative}summary:after{content:"+";position:absolute;right:0;color:var(--blue)}details[open] summary:after{content:"−"}details p{margin:0 0 18px;color:var(--muted)}.site-footer{background:#0B1F38;color:#EAF3FF;padding:58px 0 94px}.foot{display:grid;grid-template-columns:1.1fr 2fr;gap:46px}.footbrand{display:flex;flex-direction:column;align-items:flex-start}.footbrand b{font-size:24px}.footbrand span{font-size:12px;letter-spacing:.14em;color:#acc9e7}.foot section p{color:#c4d8ec}.foot nav{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.foot nav h3{font-size:14px}.foot nav a{display:block;color:#bed2e7;padding:3px 0;font-size:14px}.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:22px;display:flex;justify-content:space-between;gap:30px;color:#9ebad5;font-size:13px}.copyright p{margin:0;max-width:850px}.bottom{display:none}.shade{position:fixed;inset:0;background:rgba(9,24,43,.38);z-index:89;opacity:0;visibility:hidden;pointer-events:none}.shade.open{opacity:1;visibility:visible;pointer-events:auto}.menu-panel,.search-panel{position:fixed;z-index:90;left:0;right:0;top:var(--nav);max-height:calc(100vh - var(--nav));overflow:auto;background:#fff;box-shadow:0 20px 60px rgba(15,44,78,.18);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);transition:.2s}.menu-panel.open,.search-panel.open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.paneltop{display:flex;justify-content:space-between;align-items:center;padding-top:20px;padding-bottom:14px}.paneltop h2{margin:0;color:var(--ink)}.paneltop small{color:var(--blue)}.paneltop button{border:1px solid var(--gline);background:#fff}.mega{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-bottom:28px}.mega a{display:block;padding:10px;border-radius:12px}.mega a:hover{background:var(--pale)}.mega b,.mega span{display:block}.mega b{color:var(--ink)}.mega span{font-size:13px;color:var(--muted)}.search-panel>.shell{padding-bottom:28px}.searchbox{width:100%;padding:15px;border:2px solid var(--line);border-radius:15px;outline:none}.searchbox:focus{border-color:var(--blue)}.chips{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.chips button{border:0;background:var(--pale);color:var(--deep);padding:8px 12px;border-radius:999px;cursor:pointer}.results{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.results a{padding:14px;border:1px solid var(--gline);border-radius:13px}.results span{display:block;color:var(--muted);font-size:13px}.locked{overflow:hidden}:focus-visible{outline:3px solid rgba(20,120,242,.35);outline-offset:3px}
@media(max-width:1080px){.desktop{grid-template-columns:auto 1fr auto}.brand em{display:none}.desktop nav a{font-size:13px;padding:0 7px}.cards.four{grid-template-columns:repeat(2,1fr)}.hero-grid{grid-template-columns:1fr 1.4fr}.hero-grid>.hero-box:last-child{grid-column:1/-1;min-height:auto}.overview{grid-template-columns:1fr 1fr}.mega{grid-template-columns:1fr 1fr}.results{grid-template-columns:1fr 1fr}.masonry{columns:2 240px}.foot{grid-template-columns:1fr}}
@media(max-width:760px){:root{--nav:64px}.shell,.wrap{width:calc(100% - 30px)}.desktop{display:none}.mobile{display:grid}.brand strong{font-size:21px}.intro{padding:42px 0 22px}.intro h1{font-size:42px}.intro p{font-size:16px}.section{padding:48px 0}.head{align-items:start;flex-direction:column}.cards,.cards.four,.split,.app-grid,.safe-grid{grid-template-columns:1fr}.hero-grid{grid-template-columns:1fr}.hero-box{min-height:auto}.hero-box.primary{min-height:430px;order:-1}.hero-grid>.hero-box:last-child{grid-column:auto}.overview{display:flex;overflow-x:auto}.overview article{min-width:250px}.masonry{columns:1}.route article{flex-basis:84vw}.brand-band{padding:32px 24px}.foot nav{grid-template-columns:1fr 1fr}.copyright{flex-direction:column}.site-footer{padding-bottom:110px}.bottom{position:fixed;z-index:70;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,255,255,.98);border-top:1px solid var(--gline);padding-bottom:env(safe-area-inset-bottom)}.bottom a{min-height:58px;display:grid;place-items:center;font-size:12px;color:var(--muted)}.bottom a.on{color:var(--blue);font-weight:800}.menu-panel{top:0;left:auto;width:min(88vw,390px);height:100vh;max-height:none;transform:translateX(100%);opacity:1}.menu-panel.open{transform:none}.menu-panel .shell{width:auto;margin:0 18px}.mega{grid-template-columns:1fr;gap:3px}.mega h3{margin-bottom:2px}.mega a{padding:8px 2px}.mega span{font-size:12px}.search-panel{top:0;height:100vh;max-height:none}.results{grid-template-columns:1fr}.phone div{width:185px;height:350px}.channel-strip{margin-left:-15px;margin-right:-15px;padding-left:15px;padding-right:15px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}