:root{--bg:#020714;--panel:rgba(5,15,31,.72);--line:rgba(87,226,255,.28);--text:#effcff;--muted:rgba(226,242,249,.72);--cyan:#4fe6ff;--violet:#a66cff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:"Inter","Noto Sans TC","Microsoft JhengHei",Arial,sans-serif;overflow-x:hidden}a{color:inherit}.keepnas-shell{min-height:100vh;position:relative;background:radial-gradient(circle at 50% 18%,rgba(0,204,255,.18),transparent 32%),linear-gradient(180deg,#020916 0%,#040818 58%,#020714 100%)}
.keepnas-header{position:fixed;z-index:50;top:0;left:0;width:100%;height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(18px,4vw,72px);background:rgba(2,7,20,.82);border-bottom:1px solid rgba(87,226,255,.12);backdrop-filter:blur(16px)}
.keepnas-brand{display:flex;align-items:center;min-width:142px;text-decoration:none}.keepnas-brand img{height:35px;width:auto}.keepnas-nav{display:flex;align-items:center;gap:clamp(14px,2.4vw,38px);font-size:14px;font-weight:700;color:rgba(239,252,255,.82);position:absolute;left:50%;transform:translateX(-50%);white-space:nowrap}.keepnas-nav a{text-decoration:none;position:relative;padding:10px 0}.keepnas-nav a:hover,.keepnas-nav a.active{color:var(--cyan)}.keepnas-nav a.active:after{content:"";position:absolute;left:0;right:0;bottom:-15px;height:2px;background:linear-gradient(90deg,transparent,var(--cyan),transparent)}
main{padding-top:76px}.hero{min-height:100vh;padding:24px clamp(18px,5vw,92px) 64px;position:relative;overflow:hidden}.guardian-wrap{max-width:1080px;margin:0 auto;position:relative}.guardian-stage{position:relative;width:100%;aspect-ratio:1672/941;overflow:hidden;border-radius:22px}.guardian-stage img{display:block;width:100%;height:100%;object-fit:cover;filter:saturate(.94) contrast(1.02)}.guardian-stage:after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,rgba(2,7,20,0) 60%,rgba(2,7,20,.9) 100%)}
.eye{position:absolute;top:52%;width:6.5%;aspect-ratio:1;border-radius:50%;background:radial-gradient(circle at 50% 50%,#efffff 0 8%,#73f5ff 12%,#20d9ff 34%,rgba(42,232,255,.34) 54%,transparent 68%);box-shadow:0 0 16px rgba(79,230,255,.95),0 0 42px rgba(79,230,255,.65);transform:translate(-50%,-50%);pointer-events:none;will-change:transform,opacity}.eye.left{left:42.55%}.eye.right{left:57.95%}.eye .pupil{position:absolute;left:50%;top:50%;width:27%;aspect-ratio:1;border-radius:50%;background:#dfffff;box-shadow:0 0 8px #fff,0 0 16px var(--cyan);transform:translate(-50%,-50%);will-change:transform}.eye.blink{transform:translate(-50%,-50%) scaleY(.12)}
.hero-copy{position:relative;z-index:3;max-width:1040px;margin:-8px auto 0;text-align:center}.eyebrow{margin:0 0 12px;color:var(--cyan);letter-spacing:.24em;font-size:clamp(12px,1.2vw,15px);font-weight:900;text-transform:uppercase;text-shadow:0 0 18px rgba(79,230,255,.36)}.hero-title{margin:0 0 12px;font-size:clamp(42px,6vw,78px);line-height:1.05;letter-spacing:.06em;font-weight:900;background:linear-gradient(90deg,#eafcff 0%,#67e7ff 30%,#7d8eff 60%,#fff 100%);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-subtitle{margin:0;color:var(--cyan);font-size:clamp(18px,2vw,25px);line-height:1.55;font-weight:900;letter-spacing:.12em}
.research-section{scroll-margin-top:94px;max-width:1180px;margin:0 auto;padding:78px clamp(18px,4vw,42px);border-top:1px solid rgba(87,226,255,.10)}.research-section h2{margin:0 0 12px;font-size:clamp(30px,4vw,54px);letter-spacing:.06em;color:#f2fbff}.research-section .code{color:var(--cyan);font-weight:900;letter-spacing:.16em;font-size:14px}.research-section p{margin:16px 0 0;color:var(--muted);font-size:clamp(16px,1.5vw,19px);line-height:1.9}.research-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:30px}.info-card{border:1px solid rgba(91,211,255,.22);border-radius:16px;background:linear-gradient(180deg,rgba(9,25,47,.72),rgba(4,10,23,.58));padding:24px;min-height:150px;box-shadow:inset 0 0 30px rgba(0,220,255,.035)}.info-card h3{margin:0 0 10px;color:var(--cyan);font-size:19px;letter-spacing:.06em}.info-card p{margin:0;font-size:15px;line-height:1.75}.keepnas-footer{text-align:center;padding:44px 18px 24px;color:rgba(232,246,255,.44);font-size:13px}
.about-page{min-height:100vh;padding:130px clamp(18px,5vw,92px) 70px}.content-panel{max-width:1120px;margin:0 auto;padding:34px clamp(20px,4vw,44px);border:1px solid rgba(87,226,255,.24);border-radius:18px;background:linear-gradient(180deg,rgba(9,25,47,.74),rgba(4,10,23,.62));box-shadow:inset 0 0 34px rgba(0,220,255,.045),0 18px 60px rgba(0,0,0,.22)}.content-panel h1{margin:0 0 12px;font-size:clamp(38px,5.4vw,66px);letter-spacing:.045em}.content-panel p{color:var(--muted);font-size:16px;line-height:1.9}.status-chip{display:inline-flex;align-items:center;min-height:34px;padding:7px 13px;border:1px solid rgba(87,226,255,.30);border-radius:999px;background:rgba(0,180,255,.055);color:rgba(239,252,255,.84);font-size:13px;font-weight:800;letter-spacing:.08em}
@media(max-width:980px){.keepnas-header{padding:0 16px}.keepnas-brand{min-width:auto}.keepnas-nav{position:static;transform:none;overflow-x:auto;max-width:calc(100vw - 120px);gap:18px}.research-grid{grid-template-columns:1fr}}
@media(max-width:680px){.keepnas-header{height:68px}.keepnas-brand img{height:31px}.keepnas-nav{font-size:12px;max-width:calc(100vw - 92px);gap:15px}.keepnas-nav a.active:after{bottom:-13px}main{padding-top:68px}.hero{padding:18px 12px 48px}.guardian-stage{border-radius:14px}.hero-copy{margin-top:4px}.hero-title{font-size:clamp(38px,12vw,58px)}.research-section{scroll-margin-top:82px;padding:58px 18px}.about-page{padding:100px 16px 50px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.eye,.eye .pupil{transition:none!important}}