:root{
    --bg:#0b0d11; --surface:#17191f; --surface-2:#20232b; --line:#383d48;
    --txt:#f5f2ed; --dim:#a9adb7; --blue:#62a7ff; --green:#53d3ad;
    --warn:#ffc857; --bad:#ff6f61;
  }
  *{box-sizing:border-box; margin:0; padding:0; letter-spacing:0;}
  html{scroll-behavior:smooth;}
  body{background:var(--bg); color:var(--txt); font-family:"Segoe UI","Microsoft YaHei",system-ui,sans-serif;
       overflow-x:hidden; line-height:1.6;}
  .sr-only{position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
           clip:rect(0,0,0,0); white-space:nowrap; border:0;}
  a:focus-visible{outline:3px solid var(--warn); outline-offset:3px;}

  nav{position:fixed; top:0; left:0; right:0; z-index:50; display:flex; align-items:center; gap:16px;
      min-height:62px; padding:10px 28px; background:rgba(11,13,17,.84); backdrop-filter:blur(14px);
      border-bottom:1px solid rgba(255,255,255,.1);}
  nav .logo{display:flex; align-items:center; gap:10px; font-weight:800; font-size:16px; white-space:nowrap;}
  nav .logo img{width:38px; height:38px; object-fit:contain; filter:drop-shadow(0 4px 10px rgba(0,0,0,.45));}
  nav .brand-copy{display:flex; flex-direction:column; gap:3px; line-height:1.05;}
  nav .brand-copy b{font-size:13px; color:var(--txt); direction:ltr; unicode-bidi:isolate;}
  nav .brand-copy small{font-size:9px; color:var(--dim); font-weight:600;}
  nav .links{margin-inline-start:auto; display:flex; gap:6px; align-items:center; font-size:14px;}
  nav a{color:#d8dde6; text-decoration:none; font-weight:650; transition:color .18s,background .18s,border-color .18s,transform .18s;}
  nav a:hover{color:#fff;}
  nav .cta{background:var(--warn); color:#171106 !important; font-weight:800; padding:8px 16px;
           border-radius:8px; box-shadow:0 6px 20px rgba(255,200,87,.22);}
  nav .cta:hover{transform:translateY(-1px); background:#ffd675;}
  nav .nav-primary{display:inline-flex;align-items:center;justify-content:center;min-height:36px;padding:0 13px;border:1px solid transparent;border-radius:6px;white-space:nowrap}
  nav .nav-primary:hover{border-color:rgba(216,221,230,.3);background:rgba(255,255,255,.06)}
  nav .nav-commerce{border-color:rgba(255,111,97,.34);color:#ffd2cd;background:rgba(74,28,25,.34)}
  nav .nav-commerce:hover{border-color:var(--bad);background:rgba(101,36,31,.48)}
  nav .nav-account{gap:8px;min-height:42px;padding-block:5px;border-color:rgba(216,221,230,.25);background:rgba(16,20,27,.62)}
  nav .nav-account:hover{border-color:var(--warn);background:rgba(38,33,22,.9)}
  .account-status-dot{width:8px;height:8px;flex:0 0 8px;border-radius:50%;background:#7f8990;box-shadow:0 0 0 3px rgba(127,137,144,.14)}
  .nav-account-copy{display:grid;gap:1px;min-width:0;line-height:1.05;text-align:left}
  .nav-account-copy strong{max-width:112px;overflow:hidden;text-overflow:ellipsis;color:#fff;font-size:12px;white-space:nowrap}
  .nav-account-copy small{color:#9fa9b0;font-size:9px;font-weight:650;white-space:nowrap}
  .nav-account[data-auth-state="authenticated"]{border-color:rgba(83,211,173,.5);background:rgba(16,45,37,.78)}
  .nav-account[data-auth-state="authenticated"] .account-status-dot{background:var(--green);box-shadow:0 0 0 3px rgba(83,211,173,.16)}
  .nav-account[data-auth-state="authenticated"] .nav-account-copy small{color:#9de3cd}
  .nav-account[data-auth-state="anonymous"] .account-status-dot{background:var(--warn);box-shadow:0 0 0 3px rgba(255,200,87,.14)}
  .mobile-label{display:none}
  .language-control{display:flex; align-items:center; gap:7px; flex:0 0 auto; color:#d8dde6; cursor:pointer;}
  .language-symbol{font-size:16px; line-height:1; filter:saturate(.82);}
  .language-caption{font:750 11px/1 "Segoe UI",system-ui,sans-serif; color:#c7ced8;}
  .language-control select{width:118px; height:36px; padding-block:0; padding-inline:11px 30px; border:1px solid var(--line);
      border-radius:8px; color:var(--txt); background-color:var(--surface); font:600 12px/1 "Segoe UI","Microsoft YaHei",system-ui,sans-serif;
      cursor:pointer; outline:none;}
  .language-control select:hover{border-color:var(--blue);}
  .language-control select:focus-visible{outline:3px solid var(--warn); outline-offset:2px;}

  header{position:relative; min-height:calc(100svh - 128px); display:flex; align-items:center;
         justify-content:center; text-align:center; isolation:isolate; overflow:hidden;}
  .hero-bg{position:absolute; inset:0; z-index:0; overflow:hidden;}
  .hero-bg img{width:100%; height:100%; object-fit:cover; object-position:center 46%;}
  .hero-bg::after{content:''; position:absolute; inset:0;
               background:linear-gradient(180deg,rgba(5,7,11,.42),rgba(5,7,11,.58) 48%,rgba(11,13,17,.96) 100%);}
  .hero-inner{position:relative; z-index:2; width:min(820px,100%); padding:90px 20px 54px; animation:rise .7s ease both;}
  @keyframes rise{from{opacity:0; transform:translateY(20px);} to{opacity:1; transform:none;}}
  .hero-inner .logo-big{width:96px; height:96px; margin-bottom:12px; object-fit:contain;
               filter:drop-shadow(0 10px 22px rgba(0,0,0,.5)); animation:bob 3.2s ease-in-out infinite;}
  .powered-by{display:flex; width:max-content; align-items:center; gap:0; margin:18px auto 0; padding:8px 14px;
              border:1px solid var(--green); border-radius:7px; color:#eafff8; background:rgba(7,24,25,.92);
              box-shadow:0 6px 22px rgba(0,0,0,.42); font-family:Consolas,"Courier New",monospace; line-height:1;}
  .powered-by span{font-size:10px; font-weight:700; letter-spacing:.1em;}
  .powered-by strong{color:var(--green); font-size:17px; letter-spacing:.05em;}
  @keyframes bob{0%,100%{transform:translateY(0);} 50%{transform:translateY(-8px);}}
  h1.title{font-size:56px; font-weight:900; line-height:1.12; color:#fff6e9;
           text-shadow:0 4px 18px rgba(0,0,0,.8),0 0 2px #000;}
  .hero-kicker{margin:0 auto 14px; color:#ffd675; font-size:12px; font-weight:800; letter-spacing:.11em; unicode-bidi:plaintext; text-shadow:0 2px 8px #000;}
  .subtitle{max-width:760px; margin:12px auto 0; font-size:18px; color:#e1e3e8;
            text-shadow:0 2px 10px rgba(0,0,0,.9);}
  .hero-context{max-width:650px; margin:9px auto 0; color:#e1e3e8; font-size:14px; line-height:1.8; text-shadow:0 2px 10px rgba(0,0,0,.9);}
  .cta-row{margin-top:30px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap;}
  .btn-big,.btn-ghost{display:inline-flex; align-items:center; justify-content:center; min-height:50px;
               text-align:center; line-height:1.35; text-decoration:none; border-radius:8px; transition:transform .18s, background .18s, border-color .18s;}
  .btn-big{padding:12px 34px; font-size:18px; font-weight:900; color:#171106; background:var(--warn);
           box-shadow:0 10px 30px rgba(255,200,87,.28);}
  .btn-big:hover{transform:translateY(-2px); background:#ffd675;}
  .btn-ghost{padding:11px 26px; font-size:15px; font-weight:700; color:var(--txt);
             border:1px solid rgba(255,255,255,.28); background:rgba(11,13,17,.62); backdrop-filter:blur(8px);}
  .btn-ghost:hover{border-color:var(--green); transform:translateY(-2px);}
  .btn-endless{border-color:rgba(255,200,87,.7); color:#fff0bd; background:rgba(86,54,17,.32);}
  .btn-endless:hover{border-color:var(--warn); background:rgba(86,54,17,.55);}
  .scroll-hint{position:absolute; bottom:12px; left:50%; transform:translateX(-50%); z-index:2;
               color:#d2d5dc; font-size:12px; text-shadow:0 2px 8px #000; animation:hint 1.6s ease-in-out infinite;}
  @keyframes hint{0%,100%{transform:translate(-50%,0); opacity:.68;} 50%{transform:translate(-50%,6px); opacity:1;}}

  .commons-section{max-width:none; padding:88px 22px 92px; background:#10151c; border-top:1px solid rgba(255,255,255,.08); border-bottom:1px solid rgba(255,255,255,.08);}
  .collaborate-section{padding:84px 22px 88px; background:#11151a; border-top:1px solid rgba(83,211,173,.22); border-bottom:1px solid rgba(255,255,255,.08);}
  .battle-entry-section{max-width:none; padding:62px 22px 68px; background:#151b22; border-top:1px solid rgba(255,200,87,.14); border-bottom:1px solid rgba(255,255,255,.08);}
  .battle-entry-wrap{max-width:1120px; margin:0 auto;}
  .battle-entry-heading{display:grid; grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr); column-gap:42px; align-items:end; margin-bottom:22px;}
  .battle-entry-heading .section-kicker{grid-column:1/-1;}
  .battle-entry-heading .sec-title{text-align:start; margin:0;}
  .battle-entry-heading>p:last-child{margin:0; color:#bfc6d0; font-size:14px; line-height:1.8;}
  .battle-entry-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px;}
  .battle-entry-panel{display:flex; align-items:center; gap:15px; min-height:112px; padding:20px; border:1px solid var(--line); border-radius:8px; color:var(--txt); text-decoration:none; background:#11161d; transition:transform .18s,border-color .18s,background .18s;}
  .battle-entry-panel:hover{transform:translateY(-3px); border-color:#778392; background:#1b222c;}
  .battle-entry-panel.endless{border-color:rgba(255,200,87,.42); background:#211d16;}
  .battle-entry-panel.endless:hover{border-color:var(--warn); background:#2a2418;}
  .entry-icon{display:inline-flex; align-items:center; justify-content:center; flex:0 0 auto; width:50px; height:50px; border:1px solid currentColor; border-radius:50%; color:var(--blue); font-size:24px;}
  .battle-entry-panel.endless .entry-icon{color:var(--warn);}
  .entry-copy{display:flex; flex:1; flex-direction:column; min-width:0; gap:5px;}.entry-copy b{font-size:18px;}.entry-copy small{color:var(--dim); font-size:12px; line-height:1.5;}.entry-arrow{flex:0 0 auto; color:var(--muted); font-size:22px;}
  .collaborate-wrap{max-width:1120px; margin:0 auto;}
  .collaborate-heading{max-width:760px; margin-bottom:38px;}
  .collaborate-heading .sec-title{text-align:start; margin-bottom:14px;}
  .collaborate-heading .sec-title span:not(.title-plain){color:var(--green);}
  .collaborate-heading>p:last-child{color:#c2c7d0; font-size:16px; line-height:1.8;}
  .collaborate-layout{display:grid; grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr); gap:52px; align-items:start;}
  .collaborate-copy{font-size:15px; color:#c7cbd3; line-height:1.9;}
  .collaborate-copy p + p{margin-top:16px;}
  .contact-link{display:flex; justify-content:space-between; align-items:center; gap:18px; margin-top:28px; padding:14px 16px; border:1px solid #5bd5b1; border-radius:8px; color:#f8fffc; background:#102a23; text-decoration:none; box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 8px 24px rgba(0,0,0,.16); transition:transform .18s,background .18s,border-color .18s;}
  .contact-link:hover{transform:translateY(-2px); border-color:#a5f3d9; background:#153a30;}
  .contact-link span{font-size:13px; font-weight:700; color:#e6f6ef;}
  .contact-link strong{color:#a5f3d9; font-size:16px; overflow-wrap:anywhere; text-decoration:underline; text-decoration-color:rgba(165,243,217,.5); text-underline-offset:3px;}
  .contribution-list{display:grid; gap:10px;}
  .contribution-list article{position:relative; min-height:116px; padding:18px 20px 18px 62px; border:1px solid var(--line); border-radius:8px; background:var(--surface);}
  .contribution-list article>span{position:absolute; left:19px; top:18px; color:var(--warn); font-family:Consolas,monospace; font-size:13px; font-weight:800;}
  .contribution-list h3{font-size:16px; margin-bottom:5px; color:var(--txt);}
  .contribution-list p{font-size:13.5px; color:var(--dim); line-height:1.75;}
  .commons-wrap{max-width:1120px; margin:0 auto;}
  .commons-layout{display:grid; grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr); gap:64px; align-items:center;}
  .section-kicker{margin-bottom:12px; color:var(--green); font-size:11px; font-weight:800; letter-spacing:.12em;}
  .commons-intro .sec-title{text-align:start; margin-bottom:22px; font-size:38px; line-height:1.2;}
  .commons-intro .sec-title span:not(.title-plain){color:var(--warn);}
  .commons-intro .sec-title .title-plain{color:inherit;}
  .commons-intro p:not(.section-kicker){max-width:650px; color:#c2c7d0; font-size:15px; line-height:1.9; margin-bottom:14px;}
  .commons-intro .commons-lead{color:var(--txt) !important; font-size:20px !important; line-height:1.6 !important;}
  .commons-intro b{color:var(--txt);}
  .commons-audience{display:flex; flex-wrap:wrap; gap:8px; margin:22px 0 26px;}
  .commons-audience span{border:1px solid #394858; border-radius:999px; padding:5px 11px; color:#dce1e8; font-size:12px; background:#171e27;}
  .commons-link-row{display:flex; align-items:center; flex-wrap:wrap; gap:18px;}
  .btn-commons{display:inline-flex; align-items:center; min-height:44px; padding:10px 17px; border:1px solid var(--green); border-radius:8px; color:#08140f; background:var(--green); font-size:14px; font-weight:800; text-decoration:none; transition:transform .18s,background .18s;}
  .btn-commons:hover{background:#72e2c1; transform:translateY(-2px);}
  .text-link{color:#cbd2dc; font-size:13px; text-decoration:none;}
  .text-link:hover{color:var(--warn);}
  .commons-visual{margin:0;}
  .commons-visual img{display:block; width:100%; max-height:460px; object-fit:cover; object-position:center 62%; border:1px solid #364454; border-radius:8px; box-shadow:0 22px 50px rgba(0,0,0,.35);}
  .commons-visual figcaption{margin-top:11px; color:#8f98a6; font-size:12px; line-height:1.6;}
  .commons-principles{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px; margin-top:54px;}
  .commons-principle{padding:22px 20px; border:1px solid #303a47; border-radius:8px; background:#171d25;}
  .principle-no{display:block; margin-bottom:10px; color:var(--bad); font:800 12px/1 Consolas,monospace; letter-spacing:.08em;}
  .commons-principle h3{margin-bottom:8px; font-size:17px;}
  .commons-principle p{color:var(--dim); font-size:13.5px; line-height:1.8;}

  .facts-section{max-width:none; border-top:1px solid rgba(255,255,255,.07); background:#0f151d;}
  .facts-wrap{max-width:1120px; margin:0 auto;}
  .facts-heading{max-width:780px; margin-bottom:28px;}
  .facts-heading .sec-title{text-align:start; margin-bottom:13px;}
  .facts-heading .sec-title span:not(.title-plain){color:var(--blue);}
  .facts-lead{max-width:700px; color:#c2c7d0; font-size:14px; line-height:1.85;}
  .facts-list{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); margin:0 0 32px; border-top:1px solid #303b49; border-bottom:1px solid #303b49;}
  .facts-list div{display:grid; grid-template-columns:92px minmax(0,1fr); gap:14px; padding:15px 18px; border-bottom:1px solid #273240;}
  .facts-list div:nth-last-child(-n+2){border-bottom:0;}
  .facts-list dt{color:var(--warn); font-size:12px; font-weight:800;}
  .facts-list dd{margin:0; color:#d7dce3; font-size:13px; line-height:1.65;}
  .facts-list a,.faq-list a{color:#78d8c0; text-underline-offset:3px;}
  .faq-list{border-top:1px solid #303b49;}
  .faq-list details{border-bottom:1px solid #303b49;}
  .faq-list summary{padding:17px 4px; color:#f2f5f7; font-size:15px; font-weight:800; cursor:pointer; list-style-position:inside;}
  .faq-list summary::marker{color:var(--warn);}
  .faq-list p{max-width:850px; margin:0; padding:0 28px 18px; color:#adb6c2; font-size:13.5px; line-height:1.85;}

  section{max-width:1120px; margin:0 auto; padding:64px 22px;}
  .sec-title{text-align:center; font-size:32px; font-weight:900; margin-bottom:6px;}
  .sec-title span:not(.title-plain){color:var(--bad);}
  .sec-title .title-plain{color:inherit;}
  .sec-sub{text-align:center; color:var(--dim); margin-bottom:44px;}
  .cards{display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:18px;}
  .card{background:var(--surface); border:1px solid var(--line); border-radius:8px; padding:24px 22px;
        transition:transform .2s,border-color .2s,box-shadow .2s;}
  .card:hover{transform:translateY(-4px); border-color:var(--warn); box-shadow:0 14px 36px rgba(0,0,0,.3);}
  .card .ico{font-size:38px; margin-bottom:12px;}
  .card h3{font-size:17px; margin-bottom:8px;}
  .card p{font-size:13.5px; color:var(--dim); line-height:1.8;}
  .rules{display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:14px;}
  .rule{background:var(--surface-2); border:1px solid var(--line); border-radius:8px; padding:18px; text-align:center;}
  .rule .pts{font-size:26px; font-weight:900; color:var(--warn); font-family:Consolas,monospace;}
  .rule .what{font-size:14px; color:var(--dim); margin-top:4px;}
  .rule.hot .pts{color:var(--bad);}
  .vs-note{margin-top:26px; text-align:center; color:var(--dim); font-size:14px; line-height:2;}
  .vs-note b{color:var(--txt);}
  .chars{display:grid; grid-template-columns:repeat(3,170px); justify-content:center; gap:48px; align-items:end;}
  .char{text-align:center; transition:.25s;}
  .char:hover{transform:translateY(-6px);}
  .char img{width:170px; height:210px; object-fit:contain; filter:drop-shadow(0 14px 18px rgba(0,0,0,.4));}
  .char .nm{margin-top:10px; font-weight:800;}
  .char .rl{font-size:12px; color:var(--dim); margin-top:3px;}
  .final{text-align:center; padding:76px 22px 96px; border-top:1px solid rgba(255,255,255,.06);}
  footer{border-top:1px solid var(--line); padding:26px; text-align:center; color:var(--dim); font-size:12.5px;}
  footer a{color:var(--blue); text-decoration:none;}
  html[lang="ar"] body{font-family:"Segoe UI",Tahoma,Arial,sans-serif;}

  @media (max-width:680px){
    nav{min-height:56px; gap:8px; padding:8px 10px;}
    nav .logo{font-size:14px; gap:8px;}
    nav .logo img{width:34px; height:34px;}
    nav .brand-copy{display:none;}
    nav .links{min-width:0; flex:1; justify-content:flex-end; gap:4px;}
    nav .nav-primary{min-height:34px;padding:0 8px;font-size:11.5px}
    nav .nav-engine{display:none}
    nav .nav-account{min-height:38px;padding-block:4px}
    .nav-account-copy strong{max-width:82px;font-size:11px}
    .language-control{display:block;min-width:0}
    .language-control select{width:86px; height:34px; padding-inline:7px 20px; font-size:10.5px;}
    header{min-height:calc(100svh - 96px);}
    .hero-bg img{object-position:center 48%;}
    .hero-inner{padding:76px 16px 42px;}
    .hero-kicker{font-size:10px; letter-spacing:.08em; line-height:1.5;}
    .hero-inner .logo-big{width:76px; height:76px; margin-bottom:8px;}
    h1.title{font-size:36px; line-height:1.16;}
    .subtitle{font-size:14px; line-height:1.7;}
    .hero-context{font-size:13px; line-height:1.7;}
    .powered-by{margin-top:14px; padding:7px 12px;}
    .powered-by span{font-size:9px;}
    .powered-by strong{font-size:15px;}
    .cta-row{margin-top:24px; gap:9px; flex-direction:column; align-items:center;}
    .btn-big,.btn-ghost{width:min(280px,100%); min-height:46px;}
    .btn-big{font-size:16px;}
    .scroll-hint{bottom:8px;}
    section{padding:52px 16px;}
    .sec-title{font-size:27px;}
    .sec-sub{font-size:14px; margin-bottom:28px;}
    .commons-section{padding:62px 16px 68px;}
    .collaborate-section{padding:60px 16px 64px;}
    .battle-entry-section{padding:52px 16px 58px;}
    .battle-entry-heading{display:block; margin-bottom:20px;}
    .battle-entry-heading .sec-title{margin:0 0 12px;}
    .battle-entry-heading>p:last-child{font-size:13px;}
    .battle-entry-grid{grid-template-columns:1fr;}
    .collaborate-heading{margin-bottom:28px;}
    .collaborate-heading .sec-title{font-size:29px; line-height:1.3;}
    .collaborate-heading>p:last-child{font-size:14px;}
    .collaborate-layout{grid-template-columns:1fr; gap:26px;}
    .collaborate-copy{font-size:14px; line-height:1.85;}
    .contact-link{align-items:flex-start; flex-direction:column; gap:4px; margin-top:22px;}
    .contact-link strong{font-size:15px;}
    .contribution-list article{min-height:0;}
    .commons-layout{grid-template-columns:1fr; gap:36px;}
    .commons-intro .sec-title{font-size:29px; line-height:1.3; margin-bottom:18px;}
    .commons-intro .commons-lead{font-size:17px !important;}
    .commons-intro p:not(.section-kicker){font-size:14px; line-height:1.8;}
    .commons-visual img{max-height:300px; object-position:center 62%;}
    .commons-principles{grid-template-columns:1fr; gap:10px; margin-top:34px;}
    .commons-principle{padding:18px;}
    .facts-section{padding:58px 16px 66px;}
    .facts-heading .sec-title{font-size:29px; line-height:1.3;}
    .facts-list{grid-template-columns:1fr;}
    .facts-list div:nth-last-child(-n+2){border-bottom:1px solid #273240;}
    .facts-list div:last-child{border-bottom:0;}
    .facts-list div{grid-template-columns:76px minmax(0,1fr); padding:13px 4px;}
    .faq-list summary{font-size:14px;}
    .faq-list p{padding-left:22px; padding-right:6px; font-size:13px;}
    .cards{grid-template-columns:1fr; gap:12px;}
    .card{padding:20px;}
    .rules{grid-template-columns:repeat(2,minmax(0,1fr)); gap:10px;}
    .rule{padding:14px 8px;}
    .vs-note{font-size:13px; line-height:1.8;}
    .chars{grid-template-columns:repeat(3,minmax(0,1fr)); gap:8px;}
    .char img{width:100%; height:132px;}
    .char .nm{font-size:13px;}
    .char .rl{font-size:11px; line-height:1.4;}
    .final{padding:62px 16px 78px;}
    footer{padding:22px 16px; line-height:1.8;}
  }
  @media (max-width:1080px) and (min-width:681px){
    nav .brand-copy{display:none}
    nav .links{gap:4px}
    nav .nav-primary{padding-inline:9px;font-size:12px}
    .language-control select{width:104px}
  }
  @media (max-width:420px){
    nav{gap:6px;padding-left:8px;padding-right:8px}
    nav .logo img{width:32px;height:32px}
    nav .links{gap:3px}
    nav .nav-primary{padding:0 7px;font-size:11px}
    nav .nav-account{gap:5px;padding-inline:6px}
    .nav-account-copy strong{max-width:45px}
    .nav-account-copy small{display:none}
    .nav-account[data-auth-state="anonymous"] .nav-account-copy strong{font-size:0}
    .nav-account[data-auth-state="anonymous"] .nav-account-copy strong::after{content:"登录";font-size:11px}
    .desktop-label{display:none}
    .mobile-label{display:inline}
    .language-control{gap:4px}
    .language-caption{display:none}
    .language-symbol{font-size:14px}
    .language-control select{width:74px;padding-inline:6px 18px;font-size:10px}
  }
  @media (max-height:520px) and (orientation:landscape){
    nav{min-height:48px; padding:6px 16px;}
    nav .logo img{width:30px; height:30px;}
    header{min-height:calc(100svh - 70px);}
    .hero-inner{padding:54px 16px 22px;}
    .hero-inner .logo-big{display:none;}
    h1.title{font-size:34px;}
    .subtitle{margin-top:4px; font-size:13px;}
    .cta-row{margin-top:12px;}
    .btn-big,.btn-ghost{min-height:38px; padding:7px 20px; font-size:14px;}
    .scroll-hint{bottom:2px;}
    section{padding-top:48px; padding-bottom:48px;}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{animation:none !important; transition:none !important;}
  }



  /* ArcBlast Launchpad 首页入口板块 */
  .home-arcblast{position:relative;isolation:isolate;overflow:hidden;padding:110px clamp(24px,8vw,130px) 96px;background:linear-gradient(160deg,#0a0714,#160b1e 55%,#0a0714);border-bottom:1px solid rgba(255,84,112,.28);color:#f6f0f5}
  .home-arcblast-bg{position:absolute;inset:0;z-index:-1}.home-arcblast-bg img{width:100%;height:100%;object-fit:cover;opacity:.3;mask-image:linear-gradient(90deg,transparent,#000 45%)}
  .home-arcblast:before{content:"";position:absolute;z-index:-1;inset:0;background:radial-gradient(circle at 78% 40%,rgba(255,84,112,.2),transparent 40%)}
  .home-arcblast-inner{max-width:760px}
  .home-arcblast-title{margin:12px 0 4px;font-size:clamp(44px,6.5vw,88px);line-height:.95;letter-spacing:-.03em;background:linear-gradient(100deg,#fff 25%,#ffc94d 60%,#ff5470);-webkit-background-clip:text;background-clip:text;color:transparent}
  .home-arcblast-zh{margin:0 0 18px;font-size:clamp(16px,2vw,22px);font-weight:900;color:#ffd9e0;letter-spacing:.4em}
  .home-arcblast-slogan{margin:0 0 6px;font-size:clamp(17px,2.2vw,23px);font-weight:800;color:#fff}
  .home-arcblast-slogan small{display:block;margin-top:4px;color:#9e8ea0;font-size:13px;font-style:italic;font-weight:500;letter-spacing:.02em}
  .home-arcblast-body{margin:18px 0 0;max-width:620px;color:#c3b4c0;font-size:15px;line-height:1.85}
  .home-arcblast-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
  .home-arcblast-primary,.home-arcblast-secondary{display:inline-flex;align-items:center;gap:14px;padding:13px 20px;border-radius:8px;text-decoration:none;font-size:14px;font-weight:900;transition:transform .18s ease}
  .home-arcblast-primary{background:linear-gradient(100deg,#ffc94d,#ff5470);color:#1a0c12;box-shadow:0 8px 30px rgba(255,84,112,.3)}
  .home-arcblast-primary:hover{transform:translateY(-2px)}
  .home-arcblast-secondary{border:1px solid rgba(113,231,229,.6);color:#dffffe;background:rgba(10,16,24,.72)}
  .home-arcblast-secondary:hover{transform:translateY(-2px)}
  @media(max-width:720px){.home-arcblast{padding:80px 20px 64px}.home-arcblast-zh{letter-spacing:.25em}}