:root{
    --primary: rgb(70,139,223);
    --primary-dark: #2468b8;
    --primary-soft: #eaf4ff;
    --text: #14213d;
    --muted: #617089;
    --line: #d9e7f7;
    --surface: #ffffff;
    --soft-bg: #f5f9ff;
    --shadow: 0 18px 55px rgba(37, 99, 160, .11);
    --radius: 24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#f7fbff 0%,#ffffff 34%,#f4f8fe 100%);line-height:1.72;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1120px, calc(100% - 32px));margin:0 auto}
.narrow{width:min(860px, calc(100% - 32px));margin:0 auto}
.section{padding:58px 0}
.section-head{max-width:760px;margin:0 auto 28px;text-align:center}
.section-kicker,.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid rgba(70,139,223,.18);background:rgba(255,255,255,.8);color:var(--primary-dark);border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700;letter-spacing:.02em}
.section-head h2,.section-title{font-size:clamp(28px,4vw,44px);line-height:1.18;margin:14px 0 12px;letter-spacing:-.03em}
.section-head p,.lead{color:var(--muted);margin:0;font-size:17px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border-bottom:1px solid rgba(217,231,247,.7)}
.nav-wrap{width:min(1180px, calc(100% - 28px));margin:0 auto;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;color:#10264a}
.logo{width:38px;height:38px;border-radius:12px;object-fit:cover;box-shadow:0 8px 22px rgba(70,139,223,.22)}
.site-nav{display:none;align-items:center;gap:4px;background:#fff;border:1px solid rgba(217,231,247,.82);border-radius:999px;padding:6px;box-shadow:0 10px 30px rgba(30,80,130,.06)}
.site-nav a{padding:9px 14px;border-radius:999px;color:#526278;font-size:14px;font-weight:700;white-space:nowrap}
.site-nav a.active,.site-nav a:hover{color:var(--primary-dark);background:var(--primary-soft)}
.nav-toggle{width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:14px;font-size:20px;color:var(--text)}
.site-nav.open{position:absolute;left:14px;right:14px;top:76px;display:grid;grid-template-columns:1fr 1fr;background:#fff;border-radius:20px;padding:10px;box-shadow:var(--shadow)}
.site-nav.open a{border-radius:14px;text-align:center;padding:12px}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;box-shadow:0 14px 34px rgba(70,139,223,.28);border:1px solid rgba(255,255,255,.35);transition:transform .2s ease, box-shadow .2s ease, background .2s ease}
.download-btn:hover{transform:translateY(-2px);background:var(--primary-dark);box-shadow:0 18px 42px rgba(70,139,223,.34)}
.centered-hero{padding:76px 0 30px;text-align:center;position:relative;overflow:hidden}
.centered-hero:before{content:"";position:absolute;inset:-120px 0 auto 0;height:420px;background:radial-gradient(circle at 50% 0%,rgba(70,139,223,.24),transparent 58%);pointer-events:none}
.centered-hero .container{position:relative;z-index:1}
.hero-title{font-size:clamp(40px,7vw,78px);line-height:1.04;letter-spacing:-.055em;margin:20px auto 18px;max-width:980px}
.hero-desc{max-width:760px;margin:0 auto 24px;color:var(--muted);font-size:clamp(16px,2vw,20px)}
.hero-tags,.tag-row{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:18px}
.tag,.mini-tag{display:inline-flex;align-items:center;border-radius:999px;background:#fff;border:1px solid var(--line);color:#43536c;padding:8px 12px;font-size:13px;font-weight:700;box-shadow:0 8px 24px rgba(24,82,140,.05)}
.product-bento{display:grid;gap:16px;align-items:stretch;margin-top:26px}
.product-main{background:linear-gradient(145deg,#ffffff,#edf6ff);border:1px solid rgba(217,231,247,.9);border-radius:32px;box-shadow:var(--shadow);padding:18px;position:relative;overflow:hidden;min-height:420px;display:grid;place-items:center}
.product-main:before{content:"";position:absolute;width:560px;height:560px;background:radial-gradient(circle,rgba(70,139,223,.17),transparent 62%);right:-180px;top:-160px}
.phone-frame{position:relative;z-index:1;width:min(330px,82%);margin:auto;border-radius:34px;background:rgba(255,255,255,.68);padding:14px;box-shadow:0 30px 70px rgba(30,84,150,.16);border:1px solid rgba(255,255,255,.9)}
.phone-frame img{border-radius:26px;width:100%;height:auto}
.status-stack{display:grid;gap:14px}
.status-card,.cap-card,.category-card,.feature-card,.scenario-card,.faq-item,.principle-card,.doc-card,.step-card{background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 12px 38px rgba(26,80,140,.07)}
.status-card strong,.cap-card strong{display:block;font-size:18px;margin-bottom:5px;color:#13294b}
.status-card p,.cap-card p,.category-card p,.feature-card p,.scenario-card p,.doc-card p,.step-card p{margin:0;color:var(--muted)}
.status-card .dot{width:10px;height:10px;border-radius:50%;display:inline-block;background:var(--primary);box-shadow:0 0 0 6px rgba(70,139,223,.12);margin-right:8px}
.capability-grid{display:grid;gap:16px}
.cap-card{min-height:156px}
.cap-icon,.feature-icon{width:42px;height:42px;border-radius:15px;background:var(--primary-soft);color:var(--primary-dark);display:grid;place-items:center;font-weight:900;margin-bottom:14px}
.roadmap{position:relative;display:grid;gap:16px;counter-reset:step}
.roadmap-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:0 12px 34px rgba(34,89,150,.07)}
.roadmap-card:before{counter-increment:step;content:counter(step);width:38px;height:38px;border-radius:14px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900;margin-bottom:12px;box-shadow:0 10px 26px rgba(70,139,223,.28)}
.roadmap-card h3{margin:0 0 8px;font-size:18px}
.roadmap-card p{margin:0 0 12px;color:var(--muted)}
.card-link{display:inline-flex;color:var(--primary-dark);font-weight:800;font-size:14px}
.category-bento{display:grid;gap:16px}
.category-card{display:flex;flex-direction:column;min-height:176px;transition:transform .2s ease, box-shadow .2s ease}
.category-card:hover,.scenario-card:hover{transform:translateY(-3px);box-shadow:0 18px 45px rgba(26,80,140,.11)}
.category-card h3,.feature-card h3,.scenario-card h3{margin:0 0 8px;font-size:21px;letter-spacing:-.02em}
.category-card .card-link,.scenario-card .card-link{margin-top:auto;padding-top:14px}
.bento-grid{display:grid;gap:16px}
.feature-card{min-height:190px;position:relative;overflow:hidden}
.feature-card.large{min-height:260px;background:linear-gradient(145deg,#fff,#eef7ff)}
.feature-card.small{min-height:150px}
.security-layout{display:grid;gap:20px;align-items:center;background:rgba(255,255,255,.62);border:1px solid rgba(217,231,247,.9);border-radius:32px;padding:22px;box-shadow:var(--shadow)}
.security-copy h2{font-size:clamp(28px,4vw,44px);line-height:1.18;margin:12px 0}
.security-copy p{color:var(--muted);font-size:17px}
.principle-list{display:grid;gap:12px}
.principle-card{display:flex;gap:12px;align-items:flex-start;padding:16px}
.principle-card span{width:28px;height:28px;flex:0 0 auto;border-radius:10px;background:var(--primary-soft);color:var(--primary-dark);display:grid;place-items:center;font-weight:900}
.principle-card p{margin:0;color:var(--muted)}
.scenario-grid,.faq-grid{display:grid;gap:16px}
.faq-item h3{margin:0 0 8px;font-size:18px}.faq-item p{margin:0;color:var(--muted)}
.cta-section{padding:64px 0}.cta-box{text-align:center;border-radius:34px;background:linear-gradient(135deg,#eaf4ff,#ffffff 58%,#f4f9ff);border:1px solid var(--line);box-shadow:var(--shadow);padding:42px 20px}.cta-box h2{font-size:clamp(28px,4vw,46px);line-height:1.18;margin:0 0 14px}.cta-box p{max-width:680px;margin:0 auto 22px;color:var(--muted)}
.page-hero{padding:58px 0 30px;text-align:center}.page-hero h1{font-size:clamp(34px,5vw,58px);line-height:1.1;letter-spacing:-.04em;margin:16px auto 14px;max-width:900px}.page-hero p{max-width:760px;margin:0 auto;color:var(--muted);font-size:17px}
.doc-shell{display:grid;gap:22px;align-items:start}.doc-content{background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:var(--shadow)}.doc-content h2{margin:28px 0 10px;font-size:24px}.doc-content p{color:#4a596f}.doc-content ul,.doc-content ol{padding-left:20px;color:#4a596f}.doc-aside{display:grid;gap:16px}.doc-card h3,.step-card h3{margin:0 0 8px}.doc-card ul{margin:10px 0 0;padding-left:18px;color:var(--muted)}
.step-list{display:grid;gap:14px;margin:22px 0}.step-card{border-left:4px solid var(--primary)}.step-label{font-size:13px;color:var(--primary-dark);font-weight:900;margin-bottom:4px}.note-panel{background:var(--primary-soft);border:1px solid #cae1fb;border-radius:24px;padding:20px;color:#31516f;margin:20px 0}.doc-download{text-align:center;margin-top:28px}.doc-download .download-btn{width:100%;max-width:260px}
.download-panel{max-width:860px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:32px;padding:26px;box-shadow:var(--shadow);text-align:center}.download-panel .download-btn{margin:16px 0 24px}.download-steps{display:grid;gap:14px;text-align:left;margin-top:20px}.download-steps .step-card{box-shadow:none}.warning-list{display:grid;gap:10px;text-align:left;margin-top:20px}.warning-list div{background:#f7fbff;border:1px solid var(--line);border-radius:18px;padding:14px;color:#4d5f77}
.about-grid{display:grid;gap:18px}.about-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:0 12px 34px rgba(34,89,150,.07)}.about-card h2{margin:0 0 10px}.about-card p{margin:0;color:var(--muted)}
.site-footer{background:#f3f8ff;border-top:1px solid var(--line);padding:40px 0 0;margin-top:40px}.footer-grid{display:grid;gap:24px}.footer-brand img{width:34px;height:34px;border-radius:10px}.site-footer p{color:var(--muted);margin:12px 0 0}.site-footer h3{font-size:15px;margin:0 0 10px}.site-footer a{display:block;color:#526278;margin:7px 0}.site-footer a:hover{color:var(--primary-dark)}.footer-bottom{text-align:center;color:#718096;font-size:13px;border-top:1px solid var(--line);padding:18px;margin-top:30px}
@media (min-width:700px){.capability-grid{grid-template-columns:repeat(2,1fr)}.category-bento{grid-template-columns:repeat(2,1fr)}.scenario-grid,.faq-grid,.about-grid{grid-template-columns:repeat(2,1fr)}.download-steps{grid-template-columns:repeat(2,1fr)}.doc-download .download-btn{width:auto}}
@media (min-width:980px){.section{padding:76px 0}.nav-toggle{display:none}.site-nav{display:flex}.product-bento{grid-template-columns:1.4fr .8fr}.product-main{min-height:560px}.status-stack{grid-template-rows:repeat(4,1fr)}.capability-grid{grid-template-columns:repeat(4,1fr)}.roadmap{grid-template-columns:repeat(6,1fr);align-items:start}.roadmap-card:nth-child(even){margin-top:34px}.category-bento{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(158px,auto)}.category-card.big{grid-column:span 2}.bento-grid{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(150px,auto)}.feature-card.large{grid-column:span 2;grid-row:span 2}.feature-card.medium{grid-column:span 2}.security-layout{grid-template-columns:1.05fr .95fr;padding:34px}.doc-shell{grid-template-columns:minmax(0,1fr) 310px}.doc-content{padding:34px}.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr}.site-nav.open{position:static;display:flex}}
@media (max-width:420px){.container,.narrow{width:min(100% - 24px,1120px)}.hero-title{font-size:38px}.section{padding:46px 0}.product-main{min-height:360px;border-radius:26px}.status-card,.cap-card,.category-card,.feature-card,.scenario-card,.faq-item,.doc-card,.step-card{padding:18px}.site-nav.open{grid-template-columns:1fr}.download-btn{width:100%}}