:root{--ink:#0d1b2a;--muted:#5f7080;--line:#dbe5eb;--blue:#196fd6;--green:#76b900;--soft:#f4f8fa;--night:#09141d;--wrap:1160px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}.wrap{width:min(var(--wrap),calc(100% - 48px));margin:auto}.top{height:72px;border-bottom:1px solid var(--line);background:#fff}.top .wrap{height:100%;display:flex;align-items:center;gap:27px}.brand{display:flex;align-items:center;gap:12px;margin-right:auto}.brand img{width:104px;height:38px;object-fit:contain}.brand span{border-left:1px solid var(--line);padding-left:12px;font-size:13px;font-weight:800}.nav{display:flex;gap:4px;align-items:center}.nav>a{padding:9px 11px;color:#45586b;font-size:14px;font-weight:700}.nav>a.active{color:var(--blue)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 19px;border:1px solid transparent;border-radius:8px;font-weight:850}.btn svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.primary{background:var(--blue);color:#fff;box-shadow:0 10px 25px #196fd633}.secondary{border-color:#b9cad5;background:#fff}.crumb{padding:12px 0 10px;color:#748291;font-size:13px}.crumb a{color:var(--blue)}.hero{overflow:hidden;background:linear-gradient(125deg,#edf5fa,#f8fbfa 54%,#e8f4ee)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:55px;min-height:510px;padding:54px 0}.kicker{display:inline-flex;align-items:center;gap:9px;color:#477c17;font-size:12px;font-weight:900;letter-spacing:.11em}.kicker:before{content:"";width:22px;height:3px;background:var(--green)}h1,h2,h3{line-height:1.18;margin:0 0 18px}h1{font-size:50px;letter-spacing:0}h2{font-size:33px}.lead{max-width:650px;color:#4c5f70;font-size:18px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:27px}.facts{display:flex;flex-wrap:wrap;gap:18px;margin-top:23px;color:#5d6d7a;font-size:13px;font-weight:700}.facts b{color:var(--ink)}.product{position:relative;overflow:hidden;border-radius:15px;background:#050706;box-shadow:0 26px 56px #15304729}.product img{width:100%;aspect-ratio:1200/630;object-fit:cover}.badge{position:absolute;right:16px;bottom:16px;padding:9px 12px;border-radius:6px;background:#fffffff0;font-size:12px;font-weight:800}.section{padding:76px 0}.soft{background:var(--soft)}.heading{max-width:760px;margin:0 auto 37px;text-align:center}.heading p{color:var(--muted);margin:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{padding:25px;border:1px solid var(--line);border-radius:10px;background:#fff}.number{display:inline-grid;width:34px;height:34px;place-items:center;margin-bottom:16px;background:#eaf3ff;color:var(--blue);font-size:13px;font-weight:900}.card h3{font-size:20px}.card p{margin:0;color:var(--muted)}.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}.check{margin:0;padding:0;list-style:none}.check li{position:relative;margin:0 0 15px;padding:15px 17px 15px 43px;border:1px solid var(--line);border-radius:8px;background:#fff}.check li:before{content:"✓";position:absolute;left:16px;color:#4d8d00;font-weight:900}.callout{padding:25px;border-left:4px solid var(--green);background:#eff8e5}.callout p{margin:0;color:#425762}.steps{counter-reset:step;display:grid;gap:0;margin:0;padding:0;list-style:none}.steps li{position:relative;min-height:108px;padding:0 0 26px 76px}.steps li:before{counter-increment:step;content:"0" counter(step);position:absolute;left:0;top:0;display:grid;width:47px;height:47px;place-items:center;border-radius:50%;background:var(--blue);color:#fff;font-size:13px;font-weight:900}.steps li:not(:last-child):after{content:"";position:absolute;left:23px;top:52px;bottom:5px;border-left:1px solid #b6cfdf}.steps h3{font-size:20px;margin-bottom:8px}.steps p{margin:0;color:var(--muted)}.table{width:100%;border-collapse:collapse;border:1px solid var(--line);background:#fff}.table th,.table td{padding:15px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}.table th{background:#edf4f7;font-size:14px}.table td{color:#4d5d6b}.faq{max-width:870px;margin:auto}.faq details{border-bottom:1px solid var(--line)}.faq summary{padding:20px 2px;font-weight:800;cursor:pointer}.faq p{margin:0;padding:0 2px 20px;color:var(--muted)}.footer{padding:45px 0;background:var(--night);color:#b5c4cd}.footer-grid{display:flex;justify-content:space-between;gap:30px}.footer-grid strong{display:block;color:#fff;margin-bottom:10px}.footer-grid a{display:block;margin:5px 0;font-size:14px}.legal{margin-top:35px;padding-top:18px;border-top:1px solid #ffffff1f;font-size:12px;color:#a9bac5}.legal p{margin:4px 0}.legal a{color:#fff}@media(max-width:760px){.nav>a:not(.nav-download){display:none}.hero-grid,.split{grid-template-columns:1fr}.hero-grid{padding:42px 0}.grid{grid-template-columns:1fr}h1{font-size:38px}.footer-grid{display:block}.product{max-width:600px}.top .wrap{gap:9px}.brand span{display:none}}

/* 5090 visual system: footer navigation and download CTA only */
.primary{min-height:50px;padding:0 21px;border-radius:12px;background:linear-gradient(135deg,#2e75e8,#4d8ff3);color:#fff;border-color:transparent;box-shadow:0 12px 28px rgba(46,117,232,.24);transition:.2s transform,.2s background,.2s border-color,.2s box-shadow}
.primary:hover{transform:translateY(-2px);background:linear-gradient(135deg,#2e75e8,#4d8ff3);color:#fff;box-shadow:0 16px 36px rgba(46,117,232,.3)}
.nav>.primary{min-height:42px;padding:0 15px;border-radius:9px;box-shadow:none}
.footer{padding:65px 0 24px;background:#111c27;color:#c2ced8}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(2,1fr);gap:50px}
.footer-grid>div:not(:first-child){display:flex;flex-direction:column;gap:9px}
.footer-grid strong{margin-bottom:9px;color:#fff}
.footer-grid a{font-size:14px;color:#aab8c4}
.footer-grid a:hover{color:#fff}
.footer-grid>div:first-child>strong{font-size:16px}
.footer-grid>div:first-child>span{max-width:360px;color:#aab8c4}
.footer-grid>div:nth-child(2)>.primary{width:max-content;margin-top:4px}
.legal{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);font-size:12px;color:#7f909e}
.legal p{margin:4px 0}
.legal a{color:#fff}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.legal{margin-top:35px}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.footer-grid>div{display:flex!important}.footer{padding-top:52px}.legal{margin-top:35px}}

.nav .nav-cta{display:flex;gap:7px;align-items:center;margin-left:7px;padding:9px 13px;border-radius:9px;background:#2e75e8;color:#fff;font-weight:700;box-shadow:0 6px 16px rgba(46,117,232,.22)}
.nav .nav-cta:hover{background:#1753ad;color:#fff;transform:translateY(-1px)}
.nav-cta .icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}

.site-header{position:sticky;top:0;z-index:50;height:72px;background:rgba(255,255,255,.92);border-bottom:1px solid rgba(220,229,236,.85);backdrop-filter:blur(18px)}
.header-inner{height:100%;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:13px;margin-right:auto}
.brand img{width:134px;height:42px;object-fit:contain}
.brand span{display:flex;flex-direction:column;line-height:1.18;border-left:1px solid var(--line);padding-left:13px}
.brand strong{font-size:14px}
.brand small{margin-top:4px;color:var(--muted);font-size:11px}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav>a{padding:10px 12px;border-radius:9px;color:#405061;font-size:14px;font-weight:700}
.main-nav>a:hover,.main-nav>a.active{color:var(--blue);background:#eef5ff}
.main-nav .nav-cta{display:flex;gap:7px;align-items:center;margin-left:7px;background:#2e75e8;color:#fff}
.main-nav .nav-cta:hover{background:#1753ad;color:#fff}
.menu-button{display:none;width:44px;height:44px;place-items:center;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
.site-footer{padding:65px 0 24px;background:#111c27;color:#c2ced8}
.footer-brand p{max-width:360px;margin:18px 0;color:#aab8c4}
.footer-brand .btn{width:max-content}
.footer-bottom{display:flex;justify-content:space-between;gap:30px;padding-top:24px;margin-top:48px;border-top:1px solid rgba(255,255,255,.1);color:#7f909e;font-size:12px}
.footer-bottom a{color:#fff}
@media(max-width:800px){.footer-bottom{flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}}

.safe-download-btn{display:inline-grid;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:13px;min-width:278px;min-height:72px;padding:12px 22px;text-align:left}
.safe-download-copy{display:flex;min-width:0;flex-direction:column;align-items:flex-start;justify-content:center;line-height:1.25}
.safe-download-copy strong{font-size:19px;font-weight:800;color:inherit}
.safe-download-copy small{margin-top:4px;font-size:13px;font-weight:500;color:inherit;opacity:.86;white-space:nowrap}
.official-driver-trust{display:flex;align-items:center;gap:10px 18px;flex-wrap:wrap;margin-top:15px;color:#536273;font-size:13px;font-weight:700}
.official-driver-trust span{display:inline-flex;align-items:center;gap:7px}
.official-driver-trust span:before{content:"";width:6px;height:6px;border-radius:50%;background:#76b900;box-shadow:0 0 0 3px rgba(118,185,0,.12)}

.btn-primary{background:linear-gradient(135deg,#2e75e8,#4d8ff3);color:#fff;box-shadow:0 12px 28px rgba(46,117,232,.24);transition:.2s transform,.2s box-shadow}
.btn-primary:hover{box-shadow:0 16px 36px rgba(46,117,232,.3)}

.footer-grid a.primary{color:#fff}
.footer-grid a.primary svg{stroke:#fff}

.footer-grid a.primary{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:50px;padding:12px 21px;color:#fff}
.footer-grid a.primary svg{flex:none}

.footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.footer-grid a.primary{align-self:flex-start}

.depth-panel{padding:30px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 16px 38px rgba(35,74,104,.07)}
.depth-panel h3{margin-bottom:8px;font-size:20px}.depth-panel p{margin:0;color:var(--muted)}
.ui-path{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin-top:20px}.ui-path span{padding:9px 13px;border:1px solid #cbd9e3;border-radius:7px;background:#f7fafc;color:#354a5b;font-size:14px;font-weight:750}.ui-path b{color:var(--blue);font-size:18px}
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.case-grid article{padding:24px;border:1px solid var(--line);border-radius:14px;background:#fff}.case-grid h3{font-size:19px}.case-grid p{margin:0;color:var(--muted)}.case-label{display:inline-block;padding:4px 8px;margin-bottom:13px;border-radius:6px;background:#eaf3ff;color:var(--blue);font-size:12px;font-weight:900}
.source-note{margin-top:16px!important;padding-top:14px;border-top:1px solid var(--line);font-size:12px!important;color:#71808d!important}.source-note a{color:var(--blue);text-decoration:underline}
@media(max-width:760px){.case-grid{grid-template-columns:1fr}.ui-path{align-items:flex-start;flex-direction:column}.ui-path b{transform:rotate(90deg)}}
.post{max-width:780px;margin:0 auto;padding:28px 0 64px}
.post-head h1{font-size:clamp(28px,4vw,38px);line-height:1.3;margin-bottom:16px;letter-spacing:-.02em}
.post-meta{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:14px;margin-bottom:28px;padding-bottom:22px;border-bottom:1px solid var(--line)}
.post-body p{color:#4a5a68;font-size:16px;line-height:1.9;margin-bottom:20px}
.post-body h2{font-size:24px;margin:40px 0 16px}
.post-body h3{font-size:18px;margin:28px 0 10px}
.post-body ol{list-style:decimal;padding-left:24px;margin:0 0 20px}
.post-body li{position:static;min-height:auto;margin:0 0 10px;padding:0 0 0 6px;border:none;border-radius:0;background:none;color:#4a5a68}
.post-lead{font-size:17px!important;color:#536273!important;padding:16px 20px;background:var(--soft);border-left:3px solid var(--blue);border-radius:8px;margin-bottom:28px!important}
.post-download{margin:32px 0;padding:28px 24px;background:var(--soft);border-radius:12px;text-align:center}

.driver-info-card{display:grid;grid-template-columns:250px 1fr;gap:28px;padding:24px;margin:4px 0 32px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:0 10px 30px rgba(35,74,104,.06)}
.card-download{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:22px 16px;background:var(--soft);border-radius:10px;text-align:center}
.card-download .btn{min-width:190px}
.card-download p{margin:0;font-size:12px;color:var(--muted)}
.card-info{display:grid;grid-template-columns:1fr 1fr;gap:14px 28px;margin:0;align-content:center}
.card-info>div{display:flex;flex-direction:column;gap:3px;padding-bottom:10px;border-bottom:1px solid var(--soft)}
.card-info dt{font-size:12px;color:var(--muted)}
.card-info dd{margin:0;font-size:15px;font-weight:700;color:var(--ink)}.safe-download-btn>.icon{width:32px;height:32px;flex:none}
.card-download .safe-download-btn{width:100%;min-width:0;min-height:70px;padding:11px 18px}
.card-download .safe-download-copy small{white-space:normal}.post-cover{margin:0 auto 24px;max-width:440px;border-radius:16px;overflow:hidden;box-shadow:0 20px 50px rgba(35,74,104,.14)}
.post-cover img{width:100%;height:auto;display:block}


@media(max-width:640px){.driver-info-card{grid-template-columns:1fr}.card-info{grid-template-columns:1fr 1fr}}


.post-body .post-tip{margin:20px 0;padding:14px 18px;border:1px solid #bee5ce;border-radius:8px;background:#effaf3;color:#2d6a4f;font-size:15px}
.post-body a{color:var(--blue);text-decoration:underline}.post-table{overflow-x:auto;margin:20px 0 28px;border:1px solid var(--line);border-radius:12px}
.post-table table{width:100%;border-collapse:collapse;min-width:560px}
.post-table th,.post-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}
.post-table th{background:#f3f7fa;color:#445365;font-size:13px;font-weight:700}
.post-table td{color:#4a5a68}
.post-table tbody tr:last-child td{border-bottom:none}
.post-body details.faq-item{border-bottom:1px solid var(--line)}
.post-body details.faq-item summary{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 4px;font-size:17px;font-weight:700;cursor:pointer;list-style:none;color:var(--ink)}
.post-body details.faq-item summary::-webkit-details-marker{display:none}
.post-body details.faq-item summary::after{content:"+";font-size:24px;font-weight:400;color:var(--blue);flex:none;line-height:1;transition:transform .2s}
.post-body details.faq-item[open] summary::after{transform:rotate(45deg)}
.post-body details.faq-item p{margin:0 0 20px;padding-right:32px}
.post-body li .inline-shot{margin:14px 0 8px;text-align:center}
.post-body li .inline-shot img{max-width:100%;height:auto;border-radius:10px;border:1px solid var(--line)}
.hero-split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch;margin-bottom:28px}
.hero-visual{display:flex;flex-direction:column;gap:16px;justify-content:center}
.hero-visual .post-cover{margin:0;max-width:none}
.hero-visual .safe-download-btn{width:100%;min-width:0}
.hero-split .card-info{grid-template-columns:1fr 1fr;gap:14px 16px;align-content:space-between}
.post-body h2 .h2-no{display:inline-block;margin-right:6px;color:var(--blue);font-weight:900}
.post-body h2 .h2-no::after{content:"、"}
@media(max-width:480px){.hero-split{grid-template-columns:1fr}.hero-visual{flex-direction:row;align-items:center}}