:root{--primary:rgb(70,139,223);--primary-dark:#245ea9;--soft:#eef6ff;--text:#122033;--muted:#607086;--line:#dce9f7;--shadow:0 18px 45px rgba(38,86,140,.10);--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);line-height:1.75;overflow-x:hidden;background:radial-gradient(circle at top left,rgba(70,139,223,.14),transparent 36rem),linear-gradient(180deg,#fff,#f5faff 45%,#fff)}
a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1120px,calc(100% - 32px));margin:auto}.section{padding:64px 0}.section-tight{padding:38px 0}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,232,248,.78)}.nav-container{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:18px}.logo{display:flex;align-items:center;gap:10px;font-weight:900}.logo img{width:38px;height:38px;border-radius:12px}.site-nav{display:flex;gap:6px}.site-nav a{font-weight:700;font-size:14px;color:#405167;padding:10px 12px;border-radius:12px}.site-nav a:hover{background:var(--soft);color:var(--primary-dark)}.nav-toggle{display:none}.nav-toggle-label{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:14px;align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff}.nav-toggle-label span{width:18px;height:2px;background:#24415f;border-radius:2px}
.eyebrow,.badge{display:inline-flex;width:max-content;align-items:center;padding:7px 12px;border-radius:999px;border:1px solid rgba(70,139,223,.22);background:rgba(238,246,255,.82);color:var(--primary-dark);font-size:13px;font-weight:800}
.centered-hero{padding:88px 0 34px;text-align:center}.hero-inner{max-width:900px;margin:auto}.centered-hero h1{margin:18px 0;font-size:clamp(36px,7vw,72px);line-height:1.08;letter-spacing:-.05em}.hero-lead{margin:0 auto 26px;max-width:760px;color:#52647a;font-size:18px}.hero-tags,.tag-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:18px}.tag,.mini-tag{display:inline-flex;border:1px solid rgba(70,139,223,.18);background:rgba(255,255,255,.78);color:#31516f;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}
.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!important;font-weight:800;box-shadow:0 12px 24px rgba(70,139,223,.24);border:0;cursor:pointer;transition:.2s}.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 30px rgba(70,139,223,.28)}
.product-bento{display:grid;grid-template-columns:1fr;gap:18px;align-items:stretch;margin-top:26px}.product-card{position:relative;min-height:420px;overflow:hidden;border:1px solid rgba(70,139,223,.16);border-radius:32px;background:radial-gradient(circle at 50% 0%,rgba(70,139,223,.18),transparent 36%),linear-gradient(135deg,#fff,#eef6ff);box-shadow:var(--shadow);padding:28px;display:flex;align-items:center;justify-content:center}.product-card img{max-height:520px;margin:auto;filter:drop-shadow(0 25px 35px rgba(30,69,120,.18))}.status-stack{display:grid;gap:14px}.status-card,.category-card,.feature-card,.scenario-card,.faq-item,.doc-card,.principle-card,.ability-card{border:1px solid rgba(70,139,223,.14);border-radius:var(--radius);background:rgba(255,255,255,.88);box-shadow:0 12px 34px rgba(35,82,135,.07)}.status-card{padding:18px}.status-card strong{display:block;margin-bottom:6px}.status-card p,.category-card p,.feature-card p,.scenario-card p,.doc-card p,.ability-card p{margin:0;color:var(--muted)}.status-dot{width:10px;height:10px;border-radius:50%;background:#32b37c;display:inline-block;margin-right:7px;box-shadow:0 0 0 6px rgba(50,179,124,.10)}
.section-head{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}.section-head.center{text-align:center;align-items:center}.section-head h2{margin:0;font-size:clamp(26px,4vw,42px);line-height:1.18;letter-spacing:-.03em}.section-head p{margin:0;color:var(--muted);max-width:760px}
.ability-grid,.category-bento,.bento-grid,.scenario-grid,.feature-grid{display:grid;grid-template-columns:1fr;gap:16px}.ability-card,.category-card,.feature-card,.scenario-card{padding:22px;min-height:150px}.ability-card .icon{width:42px;height:42px;border-radius:14px;background:var(--soft);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-weight:900;margin-bottom:14px}.category-card:hover,.scenario-card:hover{transform:translateY(-2px);transition:.2s;box-shadow:0 18px 42px rgba(35,82,135,.10)}.feature-card.large{background:radial-gradient(circle at top right,rgba(70,139,223,.16),transparent 42%),#fff}
.roadmap{position:relative;display:grid;grid-template-columns:1fr;gap:14px}.roadmap:before{content:"";position:absolute;left:19px;top:20px;bottom:20px;width:2px;background:linear-gradient(var(--primary),rgba(70,139,223,.08))}.roadmap-step{position:relative;display:grid;grid-template-columns:40px 1fr;gap:14px}.step-number{position:relative;z-index:2;width:40px;height:40px;border-radius:14px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;box-shadow:0 10px 20px rgba(70,139,223,.22)}.step-body{padding:18px;border:1px solid rgba(70,139,223,.14);background:#fff;border-radius:22px;box-shadow:0 10px 25px rgba(35,82,135,.06)}.step-body h3{margin:0 0 6px}.step-body p{margin:0 0 8px;color:var(--muted)}.text-link{font-weight:800;color:var(--primary-dark)}
.security-layout{display:grid;grid-template-columns:1fr;gap:20px;align-items:center}.security-copy{border-radius:30px;padding:30px;background:linear-gradient(135deg,#fff,#eef6ff);border:1px solid rgba(70,139,223,.14)}.security-copy h2{margin:10px 0 12px;font-size:clamp(26px,4vw,42px);line-height:1.2}.security-copy p{color:var(--muted)}.principle-stack{display:grid;gap:12px}.principle-card{padding:18px;display:flex;gap:12px}.principle-card span{flex:0 0 34px;width:34px;height:34px;border-radius:12px;background:var(--soft);color:var(--primary-dark);display:flex;align-items:center;justify-content:center;font-weight:900}
.faq-list{display:grid;gap:12px}.faq-item{padding:18px}.faq-item h3{margin:0 0 8px;font-size:17px}.faq-item p{margin:0;color:var(--muted)}.cta-section{margin:44px auto 72px;text-align:center;border:1px solid rgba(70,139,223,.16);border-radius:34px;background:linear-gradient(135deg,#eef6ff,#fff 58%,#eaf4ff);padding:38px 20px;box-shadow:var(--shadow)}.cta-section h2{margin:0 0 10px;font-size:clamp(26px,4vw,40px)}.cta-section p{margin:0 auto 22px;color:var(--muted);max-width:720px}
.page-hero{padding:62px 0 30px}.doc-layout{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}.doc-main{max-width:780px}.doc-main h1{margin:14px 0 12px;font-size:clamp(32px,5vw,52px);line-height:1.12;letter-spacing:-.04em}.doc-summary{font-size:18px;color:#52647a;margin-bottom:24px}.doc-card{padding:22px;margin:16px 0}.doc-card h2,.doc-card h3{margin-top:0}.doc-card ul,.security-copy ul{padding-left:20px;color:#4f6076}.doc-side{display:grid;gap:14px}.note-card{padding:20px;border-radius:24px;background:#f7fbff;border:1px solid rgba(70,139,223,.16)}.note-card h3{margin-top:0}.process-list{display:grid;gap:12px;margin:18px 0}.process-item{border-left:3px solid var(--primary);background:#fff;border-radius:0 18px 18px 0;padding:14px 16px;box-shadow:0 10px 22px rgba(35,82,135,.05)}.process-item strong{display:block}.download-panel{padding:26px;border:1px solid rgba(70,139,223,.14);border-radius:30px;background:linear-gradient(135deg,#fff,#eef6ff);text-align:center}
.site-footer{background:#102033;color:#dce9f7;padding:46px 0 22px}.footer-grid{display:grid;grid-template-columns:1fr;gap:24px}.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}.footer-brand img{width:34px;height:34px;border-radius:10px}.site-footer p{color:#aab8ca;margin:0;max-width:560px}.site-footer h3{margin:0 0 12px;color:#fff;font-size:16px}.site-footer a{display:block;color:#c2d2e7;margin:7px 0}.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:28px;padding-top:18px;color:#94a7bd;font-size:13px}
@media(max-width:760px){.nav-toggle-label{display:flex}.site-nav{position:absolute;left:16px;right:16px;top:72px;display:none;flex-direction:column;align-items:stretch;padding:12px;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow)}.site-nav a{padding:12px}.nav-toggle:checked~.site-nav{display:flex}.centered-hero{padding-top:62px}.download-btn{width:100%;max-width:320px}.section{padding:48px 0}}
@media(min-width:640px){.ability-grid{grid-template-columns:repeat(2,1fr)}.category-bento,.scenario-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}}
@media(min-width:900px){.product-bento{grid-template-columns:minmax(0,1.7fr) minmax(280px,.8fr)}.status-stack{grid-template-rows:repeat(4,1fr)}.ability-grid{grid-template-columns:repeat(4,1fr)}.category-bento{grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(150px,auto)}.category-card.big{grid-column:span 2;grid-row:span 2}.category-card.wide{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}.scenario-grid{grid-template-columns:repeat(5,1fr)}.scenario-card.wide{grid-column:span 2}.doc-layout{grid-template-columns:minmax(0,780px) 300px}.doc-side{position:sticky;top:96px}}
@media(min-width:1024px){.roadmap{grid-template-columns:repeat(3,1fr);gap:18px}.roadmap:before{left:0;right:0;top:20px;bottom:auto;width:auto;height:2px}.roadmap-step{grid-template-columns:1fr}.step-number{margin:0 auto}.step-body{text-align:center;min-height:178px}}