:root{--ink:#102733;--muted:#5c6d75;--line:#dcecef;--canvas:#f5fbfc;--surface:#fff;--brand:#08b8cf;--brand-deep:#087e99;--aqua:#c8f6f7;--lime:#dff6b6;--shadow:0 18px 42px rgba(13,80,91,.12);--radius:18px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--canvas);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
.shell{width:min(1160px,calc(100% - 40px));margin:auto}
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:800;white-space:nowrap}
.brand img,.page-title img{width:34px;height:34px;border-radius:10px}
.nav-links{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:700}
.nav-links a{color:#47606a}
.nav-links a:hover,.nav-links a.active{color:var(--brand-deep)}
.nav-toggle{display:none;width:42px;height:42px;padding:0;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);place-items:center;cursor:pointer}
.nav-toggle svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.mobile-menu{display:none}
.button{border:0;border-radius:10px;background:var(--brand);color:#fff;display:inline-flex;justify-content:center;align-items:center;gap:9px;min-height:46px;padding:0 20px;font-weight:800;cursor:pointer}
.button:hover{background:var(--brand-deep)}
.button.ghost{background:#e8f8f9;color:var(--brand-deep)}
.button.large{min-height:54px;padding:0 26px}
.icon{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.hero{background:#fff;border-bottom:1px solid var(--line);padding:78px 0 62px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;gap:8px;align-items:center;padding:6px 11px;border:1px solid #bae9ed;border-radius:999px;color:var(--brand-deep);font-size:13px;font-weight:800;background:#f1ffff}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--brand)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(36px,5vw,62px);line-height:1.14;letter-spacing:0;margin:16px 0 18px}
h1 span{display:block;font-size:.43em;line-height:1.35;color:var(--brand-deep);font-weight:800;margin-top:9px}
h2{font-size:clamp(27px,3vw,38px);line-height:1.24;letter-spacing:0;margin-bottom:14px}
.lead{font-size:18px;color:var(--muted);max-width:610px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}
.tiny-note{margin:13px 0 0;color:#718188;font-size:13px}
.hero-visual{background:var(--aqua);border-radius:28px;min-height:410px;position:relative;padding:26px;box-shadow:var(--shadow);overflow:hidden}
.hero-visual:before,.hero-visual:after{content:"";position:absolute;border:2px solid rgba(8,126,153,.18);border-radius:50%}
.hero-visual:before{width:360px;height:360px;right:-150px;bottom:-160px}
.hero-visual:after{width:210px;height:210px;left:-100px;top:-105px}
.visual-top{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#087e99;font-weight:800}
.visual-top span{padding:5px 9px;background:#fff;border-radius:999px}
.phone{position:absolute;z-index:1;width:235px;height:360px;border:8px solid var(--ink);border-radius:32px;background:#fff;left:50%;bottom:-56px;transform:translateX(-50%);padding:19px 15px;box-shadow:0 18px 30px rgba(16,39,51,.22)}
.phone-head{display:flex;gap:8px;align-items:center;font-size:12px;font-weight:800}
.phone-head img{width:27px;height:27px;object-fit:contain;border-radius:7px}
.phone-card{background:#effcfd;border:1px solid #d1f0f2;border-radius:13px;padding:13px;margin-top:17px}
.phone-card strong{display:block;font-size:15px}
.rate{font-size:30px;line-height:1.15;color:var(--brand-deep);font-weight:900;margin:11px 0}
.slider{height:6px;border-radius:10px;background:#b7e7ea;position:relative}
.slider:after{content:"";position:absolute;width:13px;height:13px;border-radius:50%;background:var(--brand);right:23%;top:-3px}
.phone-button{background:var(--brand);color:#fff;text-align:center;padding:9px;border-radius:9px;margin-top:14px;font-size:13px;font-weight:800}
.phone-list{margin-top:15px;display:grid;gap:8px}
.phone-list span{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#4d656d}
.phone-list b{width:28px;height:14px;border-radius:10px;background:#a9dfe2}
.phone-list b.on{background:var(--brand)}
.section{padding:88px 0}
.section.alt{background:#eaf7f8}
.section-heading{max-width:690px;margin-bottom:38px}
.section-heading p{color:var(--muted);margin-bottom:0}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.feature-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:var(--aqua);color:var(--brand-deep);margin-bottom:18px}
.feature h3{font-size:18px;margin-bottom:6px}
.feature p{font-size:14px;color:var(--muted);margin-bottom:0}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.step{border-top:2px solid var(--brand);padding:21px 0 0;counter-increment:step}
.step:before{content:"0" counter(step);color:var(--brand-deep);font-weight:900;font-size:13px}
.step h3{margin:8px 0 6px;font-size:19px}
.step p{color:var(--muted);font-size:14px;margin:0}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.milestone{background:#fff;padding:19px;border-radius:14px;border:1px solid var(--line)}
.milestone time{font-weight:900;color:var(--brand-deep);font-size:14px}
.milestone h3{font-size:16px;margin:8px 0}
.milestone p{font-size:13px;color:var(--muted);margin:0}
.version-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.version-table th,.version-table td{text-align:left;padding:16px;border-bottom:1px solid var(--line);font-size:14px}
.version-table th{background:#f7fcfc;color:#60747c;font-weight:800}
.version-table tr:last-child td{border-bottom:0}
.tag{display:inline-block;padding:3px 8px;border-radius:999px;background:#e9fafa;color:#087e99;font-size:12px;font-weight:800}
.about{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}
.about-panel{background:#dff6f7;color:#102733;border:1px solid #b8e9ec;border-radius:var(--radius);padding:30px}
.about-panel img{width:52px;height:52px;object-fit:contain;border-radius:14px;margin-bottom:19px}
.about-panel p{color:#45636c}
.about-copy p{color:var(--muted)}
.setup-checklist{list-style:none;margin:20px 0 0;padding:0;border-top:1px solid #b8e9ec}
.setup-checklist li{display:grid;grid-template-columns:126px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid #b8e9ec}
.setup-checklist b{color:#087e99;font-size:13px}
.setup-checklist span{color:#45636c;font-size:14px;line-height:1.55}
.faq{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:17px}
.faq summary{font-weight:800;cursor:pointer}
.faq p{font-size:14px;color:var(--muted);padding-top:12px;margin:0}
.faq-heading{max-width:760px}
.home-faq{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch}
.home-faq .faq-item{background:#fff;border:1px solid var(--line);border-left:4px solid #a9ccef;border-radius:18px;padding:23px 28px}
.home-faq .faq-item h3{display:flex;align-items:baseline;gap:12px;font-size:18px;margin:0 0 12px}
.home-faq .faq-item h3 span{color:#087e99;font-size:13px}
.home-faq .faq-item ul{margin:0;padding-left:20px;color:#52666e}
.home-faq .faq-item li{margin:5px 0;font-size:15px;line-height:1.65}
.home-faq a,.faq-more a{color:#087e99;font-weight:800}
.faq-more{margin:25px 0 0;color:var(--muted);font-size:14px}
.cta{background:var(--brand);padding:62px 0;color:#fff}
.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}
.cta h2{margin:0 0 8px}
.cta p{margin:0;color:#eaffff}
.cta .button{background:#fff;color:var(--brand-deep)}
.guide-download{background:#fff;padding:82px 0}
.guide-download-panel{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center;background:#eaf7f8;border:1px solid #cdebed;border-top:4px solid var(--brand);padding:48px 52px}
.guide-download-copy h2{font-size:clamp(30px,3.4vw,46px);margin:17px 0 13px}
.guide-download-copy p{max-width:620px;color:#4f6870;margin:0}
.guide-download-points{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.guide-download-points span{background:#fff;border:1px solid #bce6e8;border-radius:999px;color:#087e99;padding:5px 10px;font-size:13px;font-weight:800}
.guide-download-action{background:#fff;border:1px solid #c6e7e9;padding:26px;box-shadow:0 16px 32px rgba(13,80,91,.09)}
.guide-app-title{display:flex;align-items:center;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.guide-app-title img{width:50px;height:50px;object-fit:contain;border-radius:13px}
.guide-app-title b{display:block;font-size:18px}
.guide-app-title small{display:block;color:#60747c;font-size:13px;margin-top:2px}
.guide-download-action .button{width:100%;margin-top:20px}
.guide-download-action .text-link{display:block;color:#087e99;font-size:13px;font-weight:800;text-align:center;margin-top:13px}
.page-hero{padding:72px 0 48px;background:#fff;border-bottom:1px solid var(--line)}
.page-title{display:flex;gap:14px;align-items:center;margin-bottom:18px}
.page-title img{width:42px;height:42px}
.page-title h1{font-size:clamp(32px,4vw,49px);margin:0}
.article{max-width:none}
.article h2{margin-top:49px;font-size:29px}
.article h3{font-size:20px;margin-top:30px}
.article p,.article li{color:#445a63}
.article ul,.article ol{padding-left:22px}
.article li{margin:8px 0}
.notice{background:#f0fcfc;border-left:4px solid var(--brand);padding:16px 18px;color:#335861;border-radius:0 10px 10px 0}
.download-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;margin-top:34px;display:grid;grid-template-columns:1fr auto;gap:25px;align-items:center}
.download-card h2{font-size:24px;margin-bottom:5px}
.download-card p{color:var(--muted);margin-bottom:0}
.site-footer{background:var(--ink);color:#d7edf0;padding:46px 0 24px}
.footer-top{display:flex;justify-content:space-between;gap:40px;padding-bottom:33px;border-bottom:1px solid rgba(255,255,255,.13)}
.footer-brand{max-width:360px}
.footer-brand .brand{color:#fff}
.footer-brand p{font-size:14px;color:#a8c7cd;margin:15px 0 0}
.footer-links{display:flex;gap:54px}
.footer-links b{color:#fff;display:block;margin-bottom:10px}
.footer-links a{font-size:14px;color:#a8c7cd;display:block;margin:6px 0}
.copyright{font-size:13px;color:#8baeb4;padding-top:20px;margin:0 auto}
.feature-map{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.feature-map article{background:#fff;padding:25px;min-height:190px}
.feature-map b{display:block;color:var(--brand-deep);font-size:13px;margin-bottom:18px}
.feature-map h3{font-size:20px;margin:0 0 8px}.feature-map p{font-size:14px;color:var(--muted);margin:0}
.version-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:32px 0 48px}.version-notes div{border-top:2px solid var(--brand);padding:17px 0}.version-notes b{display:block;margin-bottom:5px}.version-notes p{font-size:14px;color:var(--muted);margin:0}
.guide-layout{display:grid;grid-template-columns:220px 1fr;gap:52px;align-items:start}.guide-index{position:sticky;top:100px;border-left:2px solid var(--line);padding-left:16px}.guide-index b{display:block;color:var(--brand-deep);font-size:13px;margin-bottom:12px}.guide-index a{display:block;font-size:14px;color:var(--muted);margin:8px 0}.guide-content h2:first-child{margin-top:0}
@media(max-width:800px){.shell{width:min(100% - 30px,650px)}
.nav{height:66px}
.nav{gap:10px}
.nav-links{display:none}
.nav-toggle{display:grid;margin-left:auto}
.nav-download{display:inline-flex;min-height:38px;padding:0 12px;font-size:13px}
.mobile-menu:not([hidden]){display:grid;gap:0;padding-bottom:16px}
.mobile-menu a:not(.button){border-top:1px solid var(--line);color:#47606a;font-size:15px;font-weight:800;padding:12px 2px}
.hero{padding:52px 0}
.hero-grid,.about{grid-template-columns:1fr;gap:34px}
.hero-visual{min-height:340px}
.phone{height:315px;width:210px}
.section{padding:62px 0}
.feature-grid,.timeline{grid-template-columns:1fr 1fr}
.feature-map,.version-notes,.guide-layout{grid-template-columns:1fr}
.guide-index{position:static}
.steps,.faq{grid-template-columns:1fr}
.cta-inner,.footer-top{align-items:flex-start;flex-direction:column}
.footer-links{gap:28px;flex-wrap:wrap}
.download-card{grid-template-columns:1fr}
.guide-download{padding:58px 0}
.guide-download-panel{grid-template-columns:1fr;gap:30px;padding:31px 23px}
.version-table{display:block;overflow-x:auto;white-space:nowrap}
}
@media(max-width:460px){.feature-grid,.timeline{grid-template-columns:1fr}
h1{font-size:36px}
.hero-actions .button{width:100%}
.page-hero{padding:48px 0 34px}
.footer-links{display:grid;grid-template-columns:1fr 1fr}
}