:root{color-scheme:dark;--bg:#050b14;--line:#1e2c3b;--text:#eef3f7;--muted:#8a9bad;--accent:#8cc8e0}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;min-width:320px;background:var(--bg);color:var(--text);font-family:Inter,'Segoe UI','Microsoft YaHei UI','Microsoft YaHei',sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.hero{position:relative;height:clamp(320px,40vw,560px);overflow:hidden}
.hero-image{display:block;width:100%;height:100%;object-fit:cover;object-position:center 55%}
.hero::before{content:'';position:absolute;inset:0;z-index:0;background:linear-gradient(90deg,var(--bg) 0,#050b14aa 28%,transparent 55%)}
.hero::after{content:'';position:absolute;inset:auto 0 0 0;z-index:0;height:45%;background:linear-gradient(to bottom,transparent,var(--bg))}
.hero-copy{position:absolute;z-index:1;left:max(36px,calc((100% - 1120px)/2));top:50%;transform:translateY(-50%)}
.hero-mark{display:block;width:44px;height:44px;margin-bottom:22px;border-radius:11px}
.hero h1{margin:0;font-size:clamp(40px,5.2vw,72px);font-weight:760;letter-spacing:-.05em;line-height:1.05}
.hero p{margin:14px 0 0;color:var(--muted);font-size:clamp(14px,1.4vw,18px)}
.downloads{position:relative;z-index:2;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;width:min(1120px,calc(100% - 72px));margin:-24px auto 0}
.card{display:flex;flex-direction:column;padding:24px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(160deg,#0f1b28,#0a131d);box-shadow:inset 0 1px #ffffff0a;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-4px);border-color:#3d5a6e}
.tag{color:var(--accent);font-size:11px;font-weight:700;letter-spacing:.14em}
.card h2{margin:22px 0 6px;font-size:22px;font-weight:720;letter-spacing:-.03em}
.card p{margin:0;color:var(--muted);font-size:13px}
.actions{display:flex;flex-direction:column;gap:8px;margin-top:auto;padding-top:26px}
.actions a{display:flex;align-items:center;justify-content:space-between;min-height:44px;padding:0 16px;border:1px solid #2a3b4b;border-radius:9px;background:#ffffff08;font-size:14px;font-weight:650;transition:background .2s,border-color .2s,color .2s}
.actions a:hover{background:var(--text);border-color:var(--text);color:#0a131d}
.actions a span:last-child{font-size:17px;font-weight:400}
.footer{display:flex;align-items:center;justify-content:space-between;gap:16px;width:min(1120px,calc(100% - 72px));margin:56px auto 0;padding:22px 0 28px;border-top:1px solid #ffffff14;color:var(--muted);font-size:12px}
.footer strong{color:var(--text);font-weight:700}
@media(max-width:820px){.hero{height:340px}.hero-copy{left:20px;top:auto;bottom:48px;transform:none}.hero-mark{margin-bottom:16px}.downloads{grid-template-columns:1fr;width:calc(100% - 40px)}.footer{width:calc(100% - 40px);margin-top:40px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important}}