/* ===== NEXUS HIGHLIGHT ===== */
:root{
  --bg:#07080a;--bg-1:#0a0c10;--bg-2:#0e1116;
  --panel:rgba(14,17,22,.72);--panel-2:#0f1319;
  --line:rgba(140,190,215,.12);--line-2:rgba(46,230,255,.34);
  --cyan:#2ee6ff;--purple:#8b5cf6;--purple-l:#b79cff;
  --orange:#ff7a1a;--orange-l:#ffab6b;
  --txt:#e9eef5;--txt-2:#a3b0c2;--txt-3:#7a8798;
  --wrap:1180px;--nav:72px;
  --fd:"Chakra Petch","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --fn:"Share Tech Mono","Noto Sans SC",monospace;
  --fb:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:var(--nav)}
body{font-family:var(--fb);background:var(--bg);color:var(--txt);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 32px}
.grain{position:fixed;inset:0;z-index:9000;pointer-events:none;opacity:.5;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.035'/%3E%3C/svg%3E")}
.grid-bg{position:fixed;inset:0;z-index:0;pointer-events:none;background-image:linear-gradient(rgba(46,230,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(46,230,255,.035) 1px,transparent 1px);background-size:72px 72px;mask-image:radial-gradient(ellipse 75% 60% at 50% 25%,#000 10%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 75% 60% at 50% 25%,#000 10%,transparent 75%)}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;transition:background .4s,border-color .4s,backdrop-filter .4s}
.nav.scrolled{background:rgba(7,8,10,.78);backdrop-filter:blur(16px) saturate(1.15);-webkit-backdrop-filter:blur(16px) saturate(1.15);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--wrap);margin:0 auto;padding:0 32px;height:var(--nav);display:flex;align-items:center;gap:36px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{filter:drop-shadow(0 0 8px rgba(46,230,255,.45))}
.brand-txt{display:flex;flex-direction:column;line-height:1.15}
.brand-txt b{font-family:var(--fd);font-weight:700;font-size:15.5px;letter-spacing:.1em;color:#fff}
.brand-txt i{font-style:normal;font-size:10.5px;letter-spacing:.42em;color:var(--txt-3);margin-top:2px}
.nav-menu{margin-left:auto;display:flex;gap:2px}
.nav-menu a{position:relative;padding:9px 15px;font-size:14px;font-weight:500;color:var(--txt-2);transition:color .25s}
.nav-menu a::after{content:"";position:absolute;left:15px;right:15px;bottom:2px;height:1.5px;background:var(--cyan);transform:scaleX(0);transform-origin:left;transition:transform .3s}
.nav-menu a:hover,.nav-menu a.on{color:#fff}
.nav-menu a:hover::after,.nav-menu a.on::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.ico-btn{width:38px;height:38px;display:grid;place-items:center;color:var(--txt-2);border:1px solid var(--line);border-radius:8px;transition:.25s}
.ico-btn:hover{color:var(--cyan);border-color:var(--line-2)}
.btn-login{padding:9px 22px;font-family:var(--fd);font-weight:600;font-size:13.5px;letter-spacing:.1em;color:var(--cyan);border:1px solid var(--line-2);border-radius:6px;background:rgba(46,230,255,.04);transition:.25s}
.btn-login:hover{background:rgba(46,230,255,.12);box-shadow:0 0 18px rgba(46,230,255,.3)}
.burger{display:none;width:38px;height:38px;flex-direction:column;gap:5px;align-items:center;justify-content:center}
.burger span{width:19px;height:1.8px;background:var(--txt);transition:.3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.8px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.8px) rotate(-45deg)}

/* 搜索 */
.search{position:fixed;inset:0;z-index:1500;display:none;background:rgba(5,6,8,.88);backdrop-filter:blur(12px);padding-top:16vh}
.search.open{display:block;animation:fade .25s}
.search-box{max-width:620px;margin:0 auto;padding:0 24px}
.search-field{display:flex;align-items:center;gap:13px;padding:16px 20px;border:1px solid var(--line-2);border-radius:10px;background:var(--panel-2);color:var(--cyan)}
.search-field input{flex:1;background:none;border:none;outline:none;color:#fff;font-size:16px;font-family:var(--fb)}
.search-field input::placeholder{color:var(--txt-3)}
.search-esc{font-family:var(--fn);font-size:11px;color:var(--txt-3);border:1px solid var(--line);padding:4px 9px;border-radius:5px}
.search-esc:hover{color:var(--cyan);border-color:var(--line-2)}
.search-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px;align-items:center}
.search-tags span{font-size:12px;color:var(--txt-3)}
.search-tags a{font-size:13px;color:var(--txt-2);padding:5px 13px;border:1px solid var(--line);border-radius:999px;transition:.2s}
.search-tags a:hover{color:var(--cyan);border-color:var(--line-2)}
@keyframes fade{from{opacity:0}to{opacity:1}}

/* 通用 */
.sec{position:relative;z-index:2;padding:104px 0}
.sec-head{max-width:760px;margin-bottom:52px}
.sec-head.center{text-align:center;margin-left:auto;margin-right:auto}
.sec-idx{display:inline-block;font-family:var(--fn);font-size:11.5px;letter-spacing:.24em;color:var(--cyan);margin-bottom:16px}
.sec-h2{font-family:var(--fd);font-weight:700;font-size:clamp(26px,3.4vw,40px);line-height:1.28;color:#fff;letter-spacing:.01em}
.sec-sub{font-size:15px;color:var(--txt-2);margin-top:16px;line-height:1.8;max-width:60ch}

/* HERO */
.hero{position:relative;min-height:100vh;min-height:100dvh;display:flex;align-items:center;overflow:hidden;z-index:2}
.hero-visual{position:absolute;inset:0;z-index:0}
.hero-img{width:100%;height:100%;object-fit:cover;object-position:center 28%;opacity:.55;filter:saturate(1.1) contrast(1.04);transform:scale(1.04);animation:zoom 24s ease-out forwards}
@keyframes zoom{to{transform:scale(1)}}
.hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,8,10,.72) 0%,rgba(7,8,10,.32) 42%,rgba(7,8,10,.95) 100%),linear-gradient(90deg,rgba(7,8,10,.94) 0%,rgba(7,8,10,.55) 42%,rgba(7,8,10,.2) 62%,rgba(7,8,10,.5) 100%)}
.hero-dust{position:absolute;inset:0;width:100%;height:100%}
.hero-frame{position:absolute;inset:0;z-index:3;pointer-events:none}
.fr{position:absolute;width:30px;height:30px;border:1.5px solid rgba(46,230,255,.4)}
.fr.tl{top:calc(var(--nav) + 20px);left:22px;border-right:none;border-bottom:none}
.fr.tr{top:calc(var(--nav) + 20px);right:22px;border-left:none;border-bottom:none}
.fr.bl{bottom:22px;left:22px;border-right:none;border-top:none}
.fr.br{bottom:22px;right:22px;border-left:none;border-top:none}
.hero-body{position:relative;z-index:5;max-width:var(--wrap);margin:0 auto;padding:calc(var(--nav) + 30px) 32px 80px;width:100%}
.hero-kicker{display:inline-flex;align-items:center;gap:9px;font-family:var(--fn);font-size:11.5px;letter-spacing:.2em;color:var(--cyan);margin-bottom:24px;padding:6px 15px;border:1px solid var(--line);border-radius:999px;background:rgba(46,230,255,.04)}
.k-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);animation:blink 1.8s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.k-sep{color:var(--txt-3)}
.hero-h1{font-family:var(--fd);font-weight:700;font-size:clamp(38px,6.6vw,84px);line-height:1.08;letter-spacing:.01em;color:#fff;margin-bottom:24px}
.hero-h1 .hl{color:#fff;text-shadow:0 0 26px rgba(46,230,255,.5),0 0 60px rgba(139,92,246,.3)}
.hero-p{font-size:clamp(15px,1.6vw,18px);color:#c3cedd;line-height:1.85;margin-bottom:34px;max-width:520px;text-shadow:0 1px 12px rgba(0,0,0,.6)}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:52px}
.btn{position:relative;display:inline-flex;align-items:center;gap:9px;padding:14px 30px;font-family:var(--fd);font-weight:600;font-size:15px;letter-spacing:.05em;border-radius:7px;transition:transform .2s,box-shadow .3s,background .3s;overflow:hidden}
.btn:active{transform:scale(.97)}
.btn-solid{color:#04121a;background:linear-gradient(115deg,var(--cyan),#5fdcff);box-shadow:0 0 0 1px rgba(46,230,255,.5),0 6px 24px rgba(46,230,255,.28)}
.btn-solid::after{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent,rgba(255,255,255,.45),transparent);transform:translateX(-130%);transition:transform .6s}
.btn-solid:hover{transform:translateY(-2px);box-shadow:0 0 0 1px var(--cyan),0 10px 36px rgba(46,230,255,.45)}
.btn-solid:hover::after{transform:translateX(130%)}
.btn-line{color:var(--txt);border:1px solid var(--line-2);background:rgba(46,230,255,.03)}
.btn-line:hover{background:rgba(46,230,255,.1);box-shadow:0 0 18px rgba(46,230,255,.25);transform:translateY(-2px)}
.btn-lg{padding:16px 38px;font-size:16px}
.hero-metrics{display:flex;gap:48px;flex-wrap:wrap}
.metric{display:flex;flex-direction:column;position:relative;padding-left:15px}
.metric::before{content:"";position:absolute;left:0;top:5px;bottom:5px;width:2px;background:linear-gradient(180deg,var(--cyan),transparent)}
.metric b{font-family:var(--fn);font-size:34px;font-weight:400;color:#fff;line-height:1;display:inline}
.metric em{font-family:var(--fn);font-style:normal;font-size:18px;color:var(--cyan);margin-left:1px}
.metric span{font-size:13px;color:var(--txt-2);letter-spacing:.08em;margin-top:5px}
.hero-scroll{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:6;display:flex;flex-direction:column;align-items:center;gap:9px;font-family:var(--fn);font-size:9.5px;letter-spacing:.3em;color:var(--txt-3)}
.hero-scroll i{width:1px;height:40px;background:linear-gradient(180deg,var(--cyan),transparent);position:relative;overflow:hidden}
.hero-scroll i::after{content:"";position:absolute;top:-50%;left:0;width:100%;height:50%;background:var(--cyan);animation:sd 1.8s infinite}
@keyframes sd{0%{top:-50%}100%{top:100%}}

/* 核心模块 */
.modules{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-1) 100%)}
.mod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.mod{position:relative;padding:32px 30px 30px;border-radius:12px;background:var(--panel);border:1px solid var(--line);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:transform .35s cubic-bezier(.2,.7,.2,1),border-color .35s,box-shadow .35s;overflow:hidden}
.mod::before{content:"";position:absolute;inset:0;background:radial-gradient(480px circle at var(--mx,50%) var(--my,0%),rgba(46,230,255,.08),transparent 45%);opacity:0;transition:opacity .4s;pointer-events:none}
.mod:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:0 16px 48px rgba(0,0,0,.45)}
.mod:hover::before{opacity:1}
.mod-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.mod-ico{width:52px;height:52px;display:grid;place-items:center;border-radius:10px}
.c-cyan{color:var(--cyan);background:rgba(46,230,255,.07);border:1px solid rgba(46,230,255,.28)}
.c-purple{color:var(--purple-l);background:rgba(139,92,246,.07);border:1px solid rgba(139,92,246,.28)}
.c-orange{color:var(--orange-l);background:rgba(255,122,26,.07);border:1px solid rgba(255,122,26,.28)}
.mod-no{font-family:var(--fn);font-size:11px;letter-spacing:.14em;color:var(--txt-3)}
.mod h3{font-family:var(--fd);font-size:21px;font-weight:700;color:#fff;margin-bottom:3px}
.mod-en{font-family:var(--fn);font-size:10.5px;letter-spacing:.22em;color:var(--txt-3);margin-bottom:14px}
.mod-desc{font-size:14px;color:var(--txt-2);line-height:1.7;margin-bottom:18px}
.mod-tags{list-style:none;display:flex;flex-wrap:wrap;gap:7px;margin-bottom:22px}
.mod-tags li{font-family:var(--fn);font-size:11px;letter-spacing:.05em;color:var(--cyan);padding:4px 11px;border:1px solid var(--line);border-radius:5px;background:rgba(46,230,255,.03)}
.mod-link{display:inline-flex;align-items:center;gap:7px;font-family:var(--fd);font-weight:600;font-size:13.5px;letter-spacing:.05em;color:var(--cyan);transition:gap .25s}
.mod-link span{transition:transform .25s}
.mod:hover .mod-link{gap:12px}
.mod:hover .mod-link span{transform:translateX(3px)}

/* 作品展示 */
.showcase{background:var(--bg-1)}
.show-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.show-video{display:flex;flex-direction:column;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--panel-2)}
.show-video-frame{position:relative;width:100%;aspect-ratio:9/16;max-height:600px;overflow:hidden;background:#05070a}
.reel{position:absolute;inset:0;overflow:hidden}
.reel-slide{position:absolute;inset:0;background-size:cover;background-position:center;animation:reelPan 12s ease-in-out infinite alternate;filter:saturate(1.15) contrast(1.05)}
@keyframes reelPan{0%{transform:scale(1.12) translate(0,0)}100%{transform:scale(1.22) translate(-3%,2%)}}
.reel-scan{position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(0,0,0,.18) 0 1px,transparent 1px 3px),linear-gradient(180deg,rgba(46,230,255,.12),transparent 30%,transparent 70%,rgba(139,92,246,.18))}
.reel-scan::after{content:"";position:absolute;left:0;right:0;height:26%;background:linear-gradient(180deg,transparent,rgba(46,230,255,.14),transparent);animation:scanMove 3.2s linear infinite}
@keyframes scanMove{0%{top:-30%}100%{top:110%}}
.reel-hud{position:absolute;left:0;right:0;bottom:14px;display:flex;justify-content:space-between;padding:0 14px;font-family:var(--fn);font-size:10px;letter-spacing:.14em;color:rgba(255,255,255,.8)}
.reel-hud span:first-child{color:#ff4d5e}
.show-live{position:absolute;top:13px;left:13px;display:inline-flex;align-items:center;gap:6px;font-family:var(--fn);font-size:10.5px;letter-spacing:.12em;color:#fff;background:rgba(255,40,60,.86);padding:5px 11px;border-radius:5px;z-index:2}
.show-live i{width:5px;height:5px;border-radius:50%;background:#fff;animation:blink 1.2s infinite}
.show-dur{position:absolute;bottom:13px;right:13px;font-family:var(--fn);font-size:11px;color:#fff;background:rgba(0,0,0,.6);padding:3px 8px;border-radius:4px;z-index:2}
.show-cap{padding:18px 22px}
.show-cap h3{font-family:var(--fd);font-size:18px;color:#fff;margin-bottom:5px}
.show-cap p{font-size:12.5px;color:var(--txt-2)}
.show-image{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--panel-2);display:flex;flex-direction:column}
.show-image img{width:100%;height:100%;object-fit:cover;flex:1;min-height:0;transition:transform .7s}
.show-image:hover img{transform:scale(1.03)}
.show-image figcaption{position:absolute;left:0;right:0;bottom:0;padding:56px 22px 20px;background:linear-gradient(180deg,transparent,rgba(6,7,10,.92))}
.show-badge{display:inline-block;font-family:var(--fn);font-size:10px;letter-spacing:.18em;color:var(--purple-l);border:1px solid rgba(139,92,246,.4);padding:3px 9px;border-radius:4px;margin-bottom:9px}
.show-image h3{font-family:var(--fd);font-size:19px;color:#fff;margin-bottom:3px}
.show-image p{font-size:12.5px;color:var(--txt-2)}

/* 燃曲 */
.anthem{background:linear-gradient(180deg,var(--bg-1),var(--bg))}
.anthem-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.anthem-p{font-size:14.5px;color:var(--txt-2);line-height:1.8;margin:18px 0 24px}
.anthem-spec{list-style:none;display:flex;flex-direction:column;gap:11px}
.anthem-spec li{display:flex;gap:15px;font-size:13.5px;padding-bottom:11px;border-bottom:1px solid var(--line)}
.anthem-spec b{font-family:var(--fn);color:var(--txt-3);letter-spacing:.08em;min-width:52px;font-weight:400}
.anthem-spec span{color:var(--txt)}
.player{padding:26px;border-radius:14px;background:var(--panel);border:1px solid var(--line-2);backdrop-filter:blur(12px);box-shadow:0 0 50px rgba(46,230,255,.1)}
.player-head{display:flex;justify-content:space-between;margin-bottom:18px}
.player-head span{font-family:var(--fn);font-size:10px;letter-spacing:.15em;color:var(--cyan);padding:4px 9px;border:1px solid var(--line);border-radius:4px}
.player-wave{height:74px;display:flex;align-items:center;gap:3px;margin-bottom:20px;overflow:hidden}
.player-wave span{flex:1;background:linear-gradient(180deg,var(--cyan),var(--purple));border-radius:2px;min-height:3px;transition:height .12s;opacity:.72}
.player-ctrl{display:flex;align-items:center;gap:16px}
.play{width:52px;height:52px;flex-shrink:0;display:grid;place-items:center;border-radius:50%;color:#04121a;background:linear-gradient(115deg,var(--cyan),#5fdcff);box-shadow:0 0 20px rgba(46,230,255,.45);transition:transform .2s,box-shadow .3s}
.play:hover{transform:scale(1.06);box-shadow:0 0 30px rgba(46,230,255,.65)}
.play:active{transform:scale(.95)}
.player-bar{flex:1}
.player-track{height:5px;border-radius:3px;background:rgba(255,255,255,.1);overflow:hidden;cursor:pointer}
.player-track span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--purple));box-shadow:0 0 10px var(--cyan);transition:width .1s linear}
.player-time{display:flex;justify-content:space-between;font-family:var(--fn);font-size:10.5px;color:var(--txt-3);margin-top:7px}
.player-note{font-size:11.5px;color:var(--txt-3);margin-top:16px;text-align:center}

/* 工作流 */
.workshop{background:var(--bg)}
.flow{display:grid;grid-template-columns:1fr 44px 1fr 44px 1fr;gap:14px;align-items:center}
.flow-step{padding:32px 26px;border-radius:12px;background:var(--panel);border:1px solid var(--line);text-align:center;transition:.3s}
.flow-step:hover{border-color:var(--line-2);box-shadow:0 0 24px rgba(46,230,255,.15);transform:translateY(-3px)}
.flow-n{font-family:var(--fn);font-size:40px;color:transparent;-webkit-text-stroke:1.4px rgba(46,230,255,.5);display:block;margin-bottom:10px;line-height:1}
.flow-step h3{font-family:var(--fd);font-size:19px;color:#fff;margin-bottom:9px}
.flow-step p{font-size:13.5px;color:var(--txt-2);line-height:1.7}
.flow-line{width:100%;height:1.5px;background:linear-gradient(90deg,var(--cyan),rgba(46,230,255,.25));position:relative}
.flow-line::after{content:"";position:absolute;right:-1px;top:-3.5px;border-left:8px solid var(--cyan);border-top:4.5px solid transparent;border-bottom:4.5px solid transparent}

/* 社区 */
.community{background:linear-gradient(180deg,var(--bg),var(--bg-1))}
.comm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.comm-card{padding:32px 28px;border-radius:12px;background:var(--panel);border:1px solid var(--line);transition:.3s}
.comm-card:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,.4)}
.comm-card b{display:block;font-family:var(--fn);font-size:36px;font-weight:400;color:var(--cyan);line-height:1;margin-bottom:6px;text-shadow:0 0 18px rgba(46,230,255,.4)}
.comm-card span{display:block;font-size:14.5px;color:#fff;font-weight:500;margin-bottom:10px}
.comm-card p{font-size:13.5px;color:var(--txt-2);line-height:1.7}

/* 赛事 */
.arena{background:var(--bg-1)}
.arena-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.arena-card{padding:26px;border-radius:12px;background:var(--panel);border:1px solid var(--line);transition:.3s;display:flex;flex-direction:column}
.arena-card:hover{transform:translateY(-5px);border-color:var(--line-2);box-shadow:0 16px 44px rgba(0,0,0,.45)}
.arena-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.arena-badge{font-family:var(--fn);font-size:10.5px;letter-spacing:.08em;padding:4px 11px;border-radius:4px}
.arena-badge.live{color:#fff;background:rgba(255,40,60,.86);box-shadow:0 0 14px rgba(255,40,60,.35)}
.arena-badge.soon{color:var(--orange-l);border:1px solid rgba(255,122,26,.4);background:rgba(255,122,26,.07)}
.arena-date{font-family:var(--fn);font-size:11.5px;color:var(--txt-3)}
.arena-card h3{font-family:var(--fd);font-size:18px;color:#fff;margin-bottom:11px;line-height:1.4}
.arena-card p{font-size:13.5px;color:var(--txt-2);line-height:1.7;flex:1;margin-bottom:18px}
.arena-foot{display:flex;justify-content:space-between;align-items:center;padding-top:15px;border-top:1px solid var(--line)}
.arena-foot span{font-family:var(--fn);font-size:12.5px;color:var(--orange-l)}
.arena-foot a{font-size:13px;font-weight:600;color:var(--cyan);transition:.2s}
.arena-foot a:hover{text-shadow:0 0 10px var(--cyan)}

/* JOIN */
.join{background:radial-gradient(ellipse 55% 100% at 50% 0%,rgba(46,230,255,.1),transparent 70%),var(--bg);text-align:center;position:relative;overflow:hidden}
.join::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(46,230,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(46,230,255,.045) 1px,transparent 1px);background-size:52px 52px;mask-image:radial-gradient(ellipse 55% 75% at 50% 50%,#000,transparent 75%);-webkit-mask-image:radial-gradient(ellipse 55% 75% at 50% 50%,#000,transparent 75%)}
.join-inner{position:relative;z-index:2}
.join-kicker{font-family:var(--fn);font-size:11.5px;letter-spacing:.28em;color:var(--cyan);display:block;margin-bottom:18px}
.join-h2{font-family:var(--fd);font-size:clamp(28px,4.2vw,50px);font-weight:700;color:#fff;margin-bottom:16px;text-shadow:0 0 34px rgba(46,230,255,.28)}
.join-p{font-size:15.5px;color:var(--txt-2);max-width:540px;margin:0 auto 32px;line-height:1.8}
.join-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:22px}
.join-note{font-family:var(--fn);font-size:11.5px;letter-spacing:.08em;color:var(--txt-3)}

/* FOOTER */
.foot{background:#050607;border-top:1px solid var(--line);padding:58px 0 26px;position:relative;z-index:2}
.foot-inner{display:flex;justify-content:space-between;gap:44px;flex-wrap:wrap;margin-bottom:40px}
.foot-brand{display:flex;gap:12px;align-items:flex-start}
.foot-brand b{font-family:var(--fd);font-size:15px;letter-spacing:.08em;color:#fff;display:block}
.foot-brand p{font-size:12.5px;color:var(--txt-3);margin-top:4px}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-cols h4{font-family:var(--fn);font-size:11px;letter-spacing:.14em;color:var(--cyan);margin-bottom:13px}
.foot-cols a{display:block;font-size:13.5px;color:var(--txt-2);margin-bottom:9px;transition:.2s}
.foot-cols a:hover{color:#fff}
.foot-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:22px;border-top:1px solid var(--line);font-size:12px;color:var(--txt-3)}

/* 动效 */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:translateY(0)}

/* 响应式 */
@media(max-width:1024px){
  .nav-menu{display:none}
  .burger{display:flex}
  .nav-menu.mobile{display:flex;position:absolute;top:var(--nav);left:0;right:0;flex-direction:column;background:rgba(7,8,10,.97);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);padding:10px 0}
  .nav-menu.mobile a{padding:13px 32px}
  .nav-menu.mobile a::after{display:none}
  .mod-grid,.show-grid,.anthem-grid{grid-template-columns:1fr}
  .comm-grid,.arena-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr;gap:14px}
  .flow-line{width:1.5px;height:24px;margin:0 auto;background:linear-gradient(180deg,var(--cyan),transparent)}
  .flow-line::after{right:auto;left:-3px;top:auto;bottom:0;border-left:4.5px solid transparent;border-right:4.5px solid transparent;border-top:8px solid var(--cyan);border-bottom:none}
}
@media(max-width:640px){
  .wrap{padding:0 20px}
  .nav-inner{padding:0 20px;gap:14px}
  .btn-login{padding:8px 16px;font-size:12.5px}
  .sec{padding:72px 0}
  .hero-body{padding:calc(var(--nav) + 20px) 20px 76px}
  .hero-metrics{gap:26px}
  .metric b{font-size:28px}
  .btn{padding:12px 22px;font-size:13.5px}
  .btn-lg{padding:14px 28px;font-size:14.5px}
  .fr{width:20px;height:20px}
  .fr.tl,.fr.tr{top:calc(var(--nav) + 10px)}
  .fr.tl,.fr.bl{left:12px}
  .fr.tr,.fr.br{right:12px}
  .fr.bl,.fr.br{bottom:12px}
  .foot-cols{gap:32px}
  .foot-bottom{flex-direction:column;gap:7px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .reveal{opacity:1 !important;transform:none !important}
  .hero-img{transform:none !important}
}