:root{--na-bg:#f7fafc;--na-snow:#fff;--na-ink:#1a2332;--na-mute:#5a6d80;--na-aurora1:#4ad7c0;--na-aurora2:#7c8aff;--na-aurora3:#bd8cff;--na-line:#dde5ed;--na-gold:#d4a85c;}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--na-bg);color:var(--na-ink);font-family:'Inter','Helvetica Neue',Arial,sans-serif}
.na-body{min-height:100vh;position:relative}
.na-body::before{content:'';position:fixed;left:0;right:0;top:0;height:40vh;background:linear-gradient(180deg,rgba(74,215,192,.18) 0%,rgba(124,138,255,.14) 40%,rgba(189,140,255,.06) 70%,transparent 100%);pointer-events:none;z-index:0}
a{color:inherit;text-decoration:none}
img,mip-img{max-width:100%;display:block}
.na-stage{position:relative;z-index:1;max-width:1280px;margin:0 auto;padding:0 24px 60px}
.na-bar{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:18px;padding:18px 30px;background:rgba(255,255,255,.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--na-line)}
.na-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:600;letter-spacing:.5px}
.na-logo__icon{width:36px;height:36px;display:grid;place-items:center;background:linear-gradient(135deg,var(--na-aurora1),var(--na-aurora2));color:#fff;border-radius:50%;font-size:16px}
.na-bar__nav{flex:1}
.na-nav{display:flex;gap:6px;list-style:none;justify-content:center;flex-wrap:wrap}
.na-nav__item{position:relative}
.na-nav__item>a{padding:10px 18px;display:block;border-radius:30px;font-size:14px;color:var(--na-mute);transition:.2s}
.na-nav__item>a:hover{background:#eef4f9;color:var(--na-ink)}
.na-nav__sub{position:absolute;left:0;top:100%;background:#fff;border:1px solid var(--na-line);border-radius:18px;min-width:220px;list-style:none;padding:10px;display:none;z-index:20;box-shadow:0 12px 36px rgba(26,35,50,.08);margin-top:6px}
.na-nav__item--drop:hover .na-nav__sub{display:block}
.na-nav__sub li a{display:block;padding:8px 14px;font-size:13px;border-radius:12px;color:var(--na-mute)}
.na-nav__sub li a:hover{background:#eef4f9;color:var(--na-ink)}
.na-bar__cta{padding:10px 24px;background:linear-gradient(135deg,var(--na-aurora1),var(--na-aurora2));color:#fff;font-weight:600;border-radius:30px;font-size:14px;box-shadow:0 4px 16px rgba(74,215,192,.4)}
.na-burger{display:none;background:transparent;border:1px solid var(--na-line);border-radius:12px;padding:8px 14px;font-size:16px;cursor:pointer}
.na-hero{position:relative;padding:90px 50px;margin:34px 0;background:linear-gradient(135deg,#fff 0%,#f0f7ff 100%);border-radius:36px;overflow:hidden;border:1px solid var(--na-line)}
.na-hero::before{content:'❄';position:absolute;top:30px;right:60px;font-size:120px;color:rgba(124,138,255,.1)}
.na-hero::after{content:'';position:absolute;left:-100px;bottom:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(189,140,255,.18),transparent 70%);border-radius:50%}
.na-hero__main{position:relative;z-index:2;max-width:680px}
.na-hero__tag{display:inline-block;padding:6px 18px;background:rgba(74,215,192,.12);color:#1d8773;border-radius:20px;font-size:12px;letter-spacing:2px}
.na-hero__title{font-size:60px;margin:22px 0;line-height:1.1;color:var(--na-ink);font-weight:700}
.na-hero__sub{font-size:17px;line-height:1.7;color:var(--na-mute)}
.na-hero__btns{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.na-btn{padding:14px 30px;border-radius:30px;border:1px solid var(--na-line);color:var(--na-ink);background:#fff;font-size:14px;font-weight:600;transition:.2s;cursor:pointer;display:inline-block}
.na-btn:hover{border-color:var(--na-aurora2);color:var(--na-aurora2)}
.na-btn--lg{padding:18px 38px;background:linear-gradient(135deg,var(--na-aurora1),var(--na-aurora2));color:#fff;border:none;box-shadow:0 8px 24px rgba(74,215,192,.4)}
.na-btn--ghost{background:#fff}
.na-hero__stat{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:50px}
.na-stat{padding:24px;background:#fff;border-radius:24px;text-align:center;border:1px solid var(--na-line)}
.na-stat--alt{background:linear-gradient(135deg,rgba(74,215,192,.12),rgba(124,138,255,.08))}
.na-stat span{display:block;font-size:34px;color:var(--na-aurora2);font-weight:700}
.na-stat em{font-style:normal;font-size:13px;color:var(--na-mute);letter-spacing:1px}
.na-h{margin:60px 0 28px;text-align:center}
.na-h__pre{display:inline-block;font-size:12px;color:var(--na-aurora2);letter-spacing:4px}
.na-h__title{font-size:38px;margin-top:8px;color:var(--na-ink);font-weight:700}
.na-grid__wrap{width:100%;max-width:1000px;margin:16px auto;padding:0 16px;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;box-sizing:border-box}
.na-cell{position:relative;background:#fff;border:1px solid var(--na-line);border-radius:16px;padding:8px;transition:.3s;overflow:hidden;box-sizing:border-box}
.na-cell:hover{border-color:var(--na-aurora1);box-shadow:0 12px 30px rgba(74,215,192,.18);transform:translateY(-6px)}
.na-cell__no{position:absolute;top:18px;right:22px;font-size:11px;color:var(--na-aurora2);background:rgba(124,138,255,.1);padding:3px 9px;border-radius:10px;z-index:2}
.na-cell__name{font-size:15px;margin:12px 0 4px;color:var(--na-ink);font-weight:600}
.na-cell__rtp{font-size:12px;color:var(--na-mute)}
.na-cell mip-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;margin-bottom:6px;display:block}
.na-stream__rail{overflow:hidden;background:#fff;border-radius:30px;padding:18px 0;border:1px solid var(--na-line)}
.na-stream__track{display:flex;gap:16px;animation:na-scroll 42s linear infinite;width:fit-content}
@keyframes na-scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.na-stream__cell{flex:0 0 220px;background:#f7fafc;padding:10px;border-radius:18px}
.na-stream__cell span{display:block;margin-top:8px;font-size:13px;color:var(--na-ink);font-weight:500}
.na-news__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.na-news__card{background:#fff;border-radius:24px;padding:18px;border:1px solid var(--na-line);transition:.2s}
.na-news__card:hover{border-color:var(--na-aurora1)}
.na-news__img mip-img{border-radius:18px}
.na-news__title{margin:14px 0 8px;font-size:17px;color:var(--na-ink);font-weight:600}
.na-news__excerpt{font-size:13px;color:var(--na-mute);line-height:1.6}
.na-news__date{display:block;margin-top:10px;font-size:12px;color:var(--na-aurora2)}
.na-promo__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.na-promo__card{padding:28px;background:#fff;border-radius:24px;border:1px solid var(--na-line);text-align:center;transition:.2s}
.na-promo__card--alt{background:linear-gradient(135deg,rgba(74,215,192,.16),rgba(124,138,255,.1))}
.na-promo__card:hover{transform:translateY(-4px);border-color:var(--na-aurora1)}
.na-promo__no{font-size:12px;color:var(--na-aurora2);letter-spacing:2px}
.na-promo__card h3{margin:10px 0;color:var(--na-ink);font-size:19px}
.na-promo__card p{font-size:13px;color:var(--na-mute);line-height:1.6}
.na-faq__list{max-width:780px;margin:0 auto}
.na-faq__item{margin-bottom:14px;background:#fff;border-radius:20px;border:1px solid var(--na-line);overflow:hidden}
.na-faq__item summary{padding:18px 22px;cursor:pointer;color:var(--na-ink);font-weight:600;font-size:15px}
.na-faq__item summary::marker{color:var(--na-aurora2)}
.na-faq__item p{padding:0 22px 18px;font-size:14px;color:var(--na-mute);line-height:1.7}
.na-final{text-align:center;padding:64px 30px;margin-top:60px;background:linear-gradient(135deg,#fff,#f0f7ff);border-radius:36px;border:1px solid var(--na-line)}
.na-final__pre{font-size:12px;letter-spacing:4px;color:var(--na-aurora2)}
.na-final__title{font-size:46px;margin:18px 0;color:var(--na-ink);font-weight:700}
.na-final p{margin-bottom:24px;color:var(--na-mute)}
.na-foot{margin-top:70px;background:#fff;border-top:1px solid var(--na-line);padding:50px 30px 0;border-radius:36px 36px 0 0}
.na-foot__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;max-width:1200px;margin:0 auto 30px}
.na-foot__h{color:var(--na-aurora2);font-size:13px;letter-spacing:2px;margin-bottom:14px}
.na-foot__big{font-size:22px;color:var(--na-ink);margin-bottom:8px;font-weight:700}
.na-foot__list{list-style:none}
.na-foot__list li{padding:5px 0;font-size:14px;color:var(--na-mute)}
.na-foot__bar{display:flex;justify-content:space-between;padding:20px 24px;border-top:1px solid var(--na-line);font-size:13px;color:var(--na-mute);max-width:1200px;margin:0 auto}
.na-foot__sig{color:var(--na-aurora2)}
.na-list__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.na-card{position:relative;background:#fff;border-radius:24px;padding:16px;border:1px solid var(--na-line)}
.na-card__no{position:absolute;top:14px;left:18px;font-size:11px;color:#fff;background:var(--na-aurora2);padding:3px 9px;border-radius:10px;z-index:2}
.na-card__title{margin:12px 0 6px;color:var(--na-ink);font-size:17px;font-weight:600}
.na-card__excerpt{font-size:13px;color:var(--na-mute);line-height:1.6}
.na-card__date{display:block;margin-top:10px;font-size:12px;color:var(--na-aurora2)}
.na-card__img mip-img{border-radius:18px}
.na-detail{max-width:860px;margin:34px auto;padding:34px;background:#fff;border-radius:30px;border:1px solid var(--na-line)}
.na-detail__pre{font-size:12px;color:var(--na-aurora2);letter-spacing:3px}
.na-detail__title{font-size:34px;color:var(--na-ink);margin:14px 0;font-weight:700}
.na-detail__meta{display:flex;gap:18px;font-size:13px;color:var(--na-mute);margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid var(--na-line)}
.na-detail__body{font-size:16px;line-height:1.8;color:#2c3a4d}
.na-detail__body p{margin-bottom:16px}
.na-detail__foot{margin-top:30px;text-align:center}
.na-404{text-align:center;padding:80px 20px}
.na-404__tag{font-size:12px;color:var(--na-aurora2);letter-spacing:4px}
.na-404__num{font-size:160px;background:linear-gradient(135deg,var(--na-aurora1),var(--na-aurora2),var(--na-aurora3));-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:700}
.na-404__msg{font-size:22px;color:var(--na-ink);margin:14px 0}
.na-404__sub{margin-bottom:30px;color:var(--na-mute)}
@media(max-width:900px){.na-grid__wrap,.na-news__grid,.na-promo__grid,.na-list__grid{grid-template-columns:repeat(2,1fr)}.na-foot__grid{grid-template-columns:1fr}.na-hero__title{font-size:38px}.na-hero__stat{grid-template-columns:repeat(2,1fr)}.na-burger{display:block}.na-bar__nav{display:none}.na-bar--open .na-bar__nav{display:block;position:absolute;top:100%;left:0;right:0;background:#fff;padding:14px;border-bottom:1px solid var(--na-line)}}

/* === ENHANCEMENTS === */
/* Aurora gradient animation */
@keyframes naAurora{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
.na-aurora-bg{position:fixed;top:0;left:0;right:0;height:200px;background:linear-gradient(135deg,rgba(110,195,244,.1),rgba(76,217,180,.08),rgba(167,139,250,.1),rgba(110,195,244,.1));background-size:300% 300%;animation:naAurora 12s ease infinite;pointer-events:none;z-index:0}
/* Snowflake dots */
.na-snow{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.na-snow i{position:absolute;width:4px;height:4px;background:#fff;border-radius:50%;opacity:.3;animation:naFall 8s linear infinite}
.na-snow i:nth-child(1){left:10%;animation-duration:10s;animation-delay:0s}
.na-snow i:nth-child(2){left:30%;animation-duration:12s;animation-delay:2s}
.na-snow i:nth-child(3){left:55%;animation-duration:9s;animation-delay:4s}
.na-snow i:nth-child(4){left:75%;animation-duration:11s;animation-delay:1s}
.na-snow i:nth-child(5){left:90%;animation-duration:13s;animation-delay:3s}
@keyframes naFall{from{transform:translateY(-20px)}to{transform:translateY(100vh)}}
/* Card hover */
.na-cell:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(110,195,244,.2)}
.na-news__card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(76,217,180,.15)}
/* Trust badges */
.na-trust{max-width:1200px;margin:18px auto;padding:0 32px;display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.na-trust__item{padding:6px 14px;background:rgba(255,255,255,.7);border-radius:20px;font-size:12px;color:#475569;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.na-trust__item strong{color:#4cd9b4}
/* Divider */
.na-divider{text-align:center;padding:20px 0;font-size:20px;color:rgba(167,139,250,.2);letter-spacing:12px}

/* About */
.na-about{max-width:1100px;margin:40px auto;padding:0 28px}
.na-about__body{background:var(--na-card,#fff);border-radius:16px;padding:28px 32px;font-size:15px;line-height:1.9;color:var(--na-txt,#1e293b);box-shadow:0 2px 12px rgba(0,0,0,.04)}
.na-about__body p{margin-bottom:12px}