@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Playfair+Display:wght@500;600;700&display=swap');

:root{--blue:#004098;--blue-deep:#002b66;--ink:#283441;--muted:#657283;--pale:#eef4fa;--line:#d3e0ed;--white:#fff;--shell:min(1180px,calc(100% - 64px));font-family:"Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:#fff;scroll-behavior:smooth}
*{box-sizing:border-box}body{margin:0;min-width:320px;line-height:1.8;background:#fff}a{color:inherit;text-decoration:none}.shell{width:var(--shell);margin-inline:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid #d8e4f0;box-shadow:0 2px 7px rgba(0,36,88,.07);backdrop-filter:blur(10px)}.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:inline-flex;align-items:baseline;gap:12px;white-space:nowrap}.brand strong{color:var(--blue);font-size:23px;letter-spacing:.02em}.brand span{color:#556274;font-size:12px;font-weight:700;letter-spacing:.17em}.main-nav{display:flex;gap:2px;align-items:center;font-size:14px}.main-nav a{padding:8px 12px;color:#354556;transition:.2s}.main-nav a:hover{background:var(--blue);color:#fff}.menu-toggle{display:none;border:0;background:none;color:var(--blue);cursor:pointer}.menu-toggle i{display:block;width:20px;height:1px;margin:4px;background:var(--blue)}.menu-toggle b{font:500 12px/1 inherit}
.hero{min-height:680px;position:relative;isolation:isolate;overflow:hidden;display:flex;align-items:center;border-bottom:1px solid var(--line);background:linear-gradient(110deg,#ecf4fb 0%,#fbfdff 53%,#e9f1fa 100%)}.hero-grid{position:absolute;inset:0;z-index:-1;opacity:.6;background-image:linear-gradient(rgba(0,64,152,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(0,64,152,.055) 1px,transparent 1px);background-size:48px 48px;mask-image:linear-gradient(90deg,#000 0%,#000 48%,transparent 82%)}.hero-content{padding:90px 0 110px;position:relative;z-index:1}.eyebrow{margin:0 0 15px;color:var(--blue);font-size:13px;letter-spacing:.18em;font-weight:700}.eyebrow:before{content:"";display:inline-block;width:30px;height:1px;margin:0 10px 4px 0;background:currentColor}.hero h1{margin:0 0 20px;color:var(--blue);font-size:clamp(66px,8.2vw,108px);line-height:1.05;letter-spacing:.03em}.hero h1 span{display:block;margin:16px 0 0 7px;color:#46566a;font-size:.29em;letter-spacing:.24em}.hero-lead{max-width:510px;margin:0 0 29px;color:#425162;font-size:19px;line-height:2}.hero-actions{display:flex;flex-wrap:wrap;gap:12px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:47px;padding:0 20px;font-size:14px;font-weight:700;transition:transform .2s,box-shadow .2s}.button:hover{transform:translateY(-2px);box-shadow:0 6px 14px rgba(0,64,152,.15)}.button.primary{background:var(--blue);color:#fff}.button.primary b{margin-left:14px;font-size:18px}.button.secondary{border:1px solid var(--blue);color:var(--blue);background:rgba(255,255,255,.65)}.hero-art{position:absolute;z-index:0;right:max(18px,calc((100vw - 1300px)/2));bottom:15px;width:min(760px,58vw);filter:drop-shadow(0 10px 16px rgba(0,64,152,.12))}
h2{margin:0;color:var(--blue);font-size:clamp(35px,4.5vw,58px);line-height:1.3;letter-spacing:.035em}.overview{display:grid;grid-template-columns:90px 1fr 1.08fr;gap:43px;padding:122px 0}.section-number{padding-top:35px;border-top:1px solid var(--blue);color:var(--blue);font:22px "Playfair Display",serif}.overview-copy{padding-top:35px;color:#52606e}.overview-copy p{margin:0 0 18px}.overview-copy strong{color:var(--blue)}
.principles{padding:86px 0 96px;background:#f2f7fb;border-block:1px solid var(--line)}.principles h2{font-size:clamp(30px,3.6vw,44px)}.principle-grid{display:grid;grid-template-columns:repeat(3,1fr);margin-top:37px;border:1px solid var(--line);border-right:0;border-bottom:0}.principle-grid article{min-height:230px;padding:28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}.principle-grid span{color:var(--blue);font:22px "Playfair Display",serif}.principle-grid h3{margin:12px 0 9px;color:var(--blue);font-size:23px}.principle-grid p{margin:0;color:var(--muted);font-size:15px}
.algorithm-section{display:grid;grid-template-columns:minmax(0,1.07fr) minmax(340px,.93fr);gap:72px;align-items:center;padding:122px 0}.algorithm-copy .eyebrow{margin-bottom:20px}.algorithm-copy h2 span{display:block;margin-top:8px;color:#5b6b7d;font-family:"Playfair Display",serif;font-size:.34em;letter-spacing:.2em}.algorithm-copy p{color:#51606f}.algorithm-copy .lead{margin:28px 0 22px;color:#2f4052;font-size:18px;line-height:1.9}.security-note{margin-top:32px;padding-top:24px;border-top:1px solid var(--line)}.security-note h3{margin:0 0 8px;color:var(--blue);font-size:22px}.security-note p{margin:0}.algorithm-art{margin:0;position:relative;min-height:370px;display:grid;place-items:center}.algorithm-art:before{content:"";position:absolute;width:85%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,#edf4fb 0%,rgba(237,244,251,0) 68%)}.algorithm-art img{position:relative;z-index:1;width:min(100%,490px);filter:drop-shadow(0 14px 16px rgba(0,64,152,.15))}.octarine-section{display:block;background:#fff}.algorithm-inner{display:grid;grid-template-columns:minmax(0,1.07fr) minmax(340px,.93fr);gap:72px;align-items:center;padding:122px 0}.octarine-section .algorithm-copy{grid-column:1;grid-row:1}.octarine-section .algorithm-art{grid-column:2;grid-row:1}.octarine-art img{filter:drop-shadow(0 14px 17px rgba(77,37,148,.21))}
.resources{padding:108px 0;background:#fff}.resources-heading{display:flex;align-items:end;justify-content:space-between;gap:50px;margin-bottom:37px}.resources-heading>p{max-width:430px;margin:0;color:var(--muted)}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.download-suite{border:1px solid #c9d8e8;background:#fff;box-shadow:0 3px 11px rgba(0,64,152,.07)}.suite-head{display:flex;align-items:center;gap:20px;min-height:126px;padding:25px 29px;background:#f2f7fb;border-bottom:3px solid var(--blue)}.suite-head>span{color:var(--blue);font:30px "Playfair Display",serif}.suite-head h3{margin:0 0 3px;color:var(--blue);font-size:27px}.suite-head p{margin:0;color:var(--muted);font-size:13px}.download-list{padding:8px 28px 18px}.download-list a{display:grid;grid-template-columns:43px 1fr auto;gap:12px;align-items:center;min-height:78px;border-bottom:1px solid #dce6f0;transition:.2s}.download-list a:last-child{border:0}.download-list a:hover{margin-inline:-8px;padding-inline:8px;background:#f5f9fd;color:var(--blue)}.download-list em{display:grid;place-items:center;width:40px;height:29px;background:#ba3641;color:#fff;font-size:10px;font-style:normal;font-weight:700;letter-spacing:.08em}.download-list em.zip{background:var(--blue)}.download-list span{font-size:15px;font-weight:700;line-height:1.35}.download-list small{display:block;margin-top:4px;color:#7a8793;font-size:12px;font-weight:400}.download-list b{color:var(--blue);font-size:13px;white-space:nowrap}
.papers{padding:118px 0}.paper-list{margin:38px 0 0;padding:0;list-style:none;border-top:1px solid var(--line)}.paper-list li{display:grid;grid-template-columns:58px 1fr 36px;gap:15px;padding:29px 0;border-bottom:1px solid var(--line)}.paper-list>li>span{color:var(--blue);font:21px "Playfair Display",serif}.paper-list h3{margin:0 0 8px;font-size:20px;line-height:1.55}.paper-list p{margin:0 0 4px;color:var(--muted);font-size:13px;line-height:1.7}.paper-list .citation{color:var(--blue)}.paper-list a{align-self:start;display:grid;place-items:center;width:34px;height:34px;border:1px solid #b9cee4;color:var(--blue);font-size:20px}.paper-list a:hover{background:var(--blue);color:#fff}
.team{padding:106px 0;background:#f2f7fb;border-top:1px solid var(--line)}.team-inner{display:grid;grid-template-columns:36% 1fr;gap:70px}.team h2 span{display:block;font-family:"Playfair Display",serif;font-size:.36em;letter-spacing:.2em}.team-inner>div>p:last-child{color:var(--muted)}.team-list{margin:0;padding:0;list-style:none;border-top:1px solid var(--line);counter-reset:team}.team-list li{position:relative;display:grid;grid-template-columns:1fr 1.05fr;gap:16px;align-items:center;min-height:67px;padding:14px 0 14px 42px;border-bottom:1px solid var(--line)}.team-list li:before{counter-increment:team;content:counter(team,decimal-leading-zero);position:absolute;left:0;top:17px;color:var(--blue);font:13px "Playfair Display",serif}.team-list b{font-size:15px;font-weight:600}.team-list b small{color:#687586;font-size:12px;font-weight:400}.team-list span{color:var(--muted);font-size:13px}
footer{background:var(--blue);color:#fff}.footer-inner{display:flex;align-items:center;gap:22px;min-height:108px}.footer-inner .brand strong,.footer-inner .brand span{color:#fff}.footer-inner p{margin:0 auto 0 0;font-size:13px}.footer-inner>a:last-child{font-size:13px}
@media(max-width:900px){.main-nav{gap:0}.main-nav a{padding:8px 8px;font-size:13px}.hero{min-height:620px}.hero-art{width:55vw;right:10px}.overview{grid-template-columns:68px 1fr 1fr;gap:28px}.algorithm-section,.algorithm-inner{gap:36px}.algorithm-art{min-height:310px}.team-inner{gap:35px}}
@media(max-width:700px){:root{--shell:min(100% - 40px,1180px)}.header-inner{height:65px}.brand strong{font-size:21px}.brand span{font-size:11px}.menu-toggle{display:block;padding:7px 0}.main-nav{position:absolute;top:65px;left:0;display:none;width:100%;padding:11px 20px 16px;flex-wrap:wrap;background:#fff;border-bottom:1px solid #b9cee4}.main-nav.open{display:flex}.main-nav a{width:33.33%;padding:9px 2px;text-align:center}.hero{min-height:650px;align-items:flex-start}.hero-content{padding:88px 0 0}.hero h1{font-size:62px}.hero-lead{max-width:355px;font-size:17px}.hero-art{width:520px;right:-92px;bottom:15px;opacity:.85}.overview{grid-template-columns:1fr;gap:13px;padding:76px 0}.section-number{width:55px;padding-top:7px}.overview-copy{padding-top:3px}.principles{padding:67px 0}.principle-grid{grid-template-columns:1fr}.principle-grid article{min-height:0;padding:24px}.algorithm-section,.algorithm-inner{grid-template-columns:1fr;padding:74px 0;gap:13px}.algorithm-section .algorithm-copy{order:1}.algorithm-art{order:2;min-height:260px;margin-top:12px}.octarine-section .algorithm-copy{order:1}.octarine-section .algorithm-art{order:2}.algorithm-copy .lead{font-size:17px}.resources{padding:75px 0}.resources-heading{display:block}.resources-heading>p{margin-top:20px}.download-grid{grid-template-columns:1fr}.suite-head{min-height:110px;padding:22px}.download-list{padding:7px 20px 14px}.download-list a{grid-template-columns:40px 1fr;gap:10px}.download-list b{grid-column:2}.papers{padding:76px 0}.paper-list{margin-top:28px}.paper-list li{grid-template-columns:36px 1fr 30px;gap:8px;padding:24px 0}.paper-list h3{font-size:18px}.team{padding:76px 0}.team-inner{grid-template-columns:1fr;gap:25px}.team-list li{grid-template-columns:1fr;gap:0;padding:13px 0 13px 36px}.team-list li:before{top:14px}.footer-inner{min-height:120px;padding:20px 0;flex-wrap:wrap;gap:9px 16px}.footer-inner p{width:100%;order:3}.algorithm-art img{width:min(88vw,390px)}}