:root{--bg:#e9edf2;--bg-glow-a:#c4d6e480;--bg-glow-b:#ded0ba66;--glass:#ffffff94;--glass-strong:#ffffffbd;--glass-border:#ffffffa6;--glass-inner:#fff6;--text:#24303c;--text-2:#5c6b7a;--text-3:#8b98a6;--accent:#4e7ba3;--accent-soft:#4e7ba324;--accent-ink:#fff;--gold:#b8964e;--danger:#b4554d;--danger-soft:#b4554d24;--shadow-1:0 1px 2px #24303c0f,0 8px 24px #24303c14;--shadow-2:0 2px 8px #24303c1a,0 22px 56px #24303c2e;--shadow-inset:inset 0 1px 0 var(--glass-inner);--ease-ios:cubic-bezier(.25,1,.5,1);--ease-spring:cubic-bezier(.34,1.4,.64,1)}@media (prefers-color-scheme:dark){:root{--bg:#161b22;--bg-glow-a:#3a546c4d;--bg-glow-b:#604e3033;--glass:#262e3a8c;--glass-strong:#2c3542c7;--glass-border:#ffffff1a;--glass-inner:#ffffff17;--text:#e6ebf2;--text-2:#9aa7b6;--text-3:#66748a;--accent:#7fa6c9;--accent-soft:#7fa6c929;--accent-ink:#10151c;--gold:#d0ae6a;--danger:#d07a72;--danger-soft:#d07a7226;--shadow-1:0 1px 2px #0000004d,0 8px 24px #00000052;--shadow-2:0 2px 8px #0006,0 22px 56px #00000080}}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;transition:background-color .45s var(--ease-ios),color .45s var(--ease-ios);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Segoe UI,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.65}.aurora{z-index:-1;pointer-events:none;position:fixed;inset:0;overflow:hidden}.aurora:before,.aurora:after{content:"";filter:blur(90px);opacity:.55;border-radius:50%;position:absolute}.aurora:before{background:radial-gradient(circle,var(--bg-glow-a),transparent 65%);width:55vw;height:55vw;top:-18vw;left:-12vw}.aurora:after{background:radial-gradient(circle,var(--bg-glow-b),transparent 65%);width:48vw;height:48vw;bottom:-16vw;right:-10vw}a{color:var(--accent);text-decoration:none}::selection{background:var(--accent-soft)}.landing{max-width:1080px;margin:0 auto;padding:56px 24px 40px}.landing-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-bottom:64px;display:flex}.landing-brand{align-items:center;gap:12px;display:flex}.landing-logo{background:linear-gradient(145deg,var(--accent),color-mix(in srgb,var(--accent)72%,var(--gold)));width:46px;height:46px;color:var(--accent-ink);box-shadow:0 8px 22px var(--accent-soft),inset 0 1px 0 #ffffff47;border-radius:14px;justify-content:center;align-items:center;font-size:22px;display:flex}.landing-name{font-size:17px;font-weight:600}.landing-sub{color:var(--text-3);font-size:12px}.btn-glass{border:1px solid var(--glass-border);background:var(--glass-strong);color:var(--text);cursor:pointer;-webkit-backdrop-filter:blur(20px)saturate(1.5);box-shadow:var(--shadow-1),var(--shadow-inset);transition:transform .35s var(--ease-spring),box-shadow .3s var(--ease-ios);border-radius:13px;align-items:center;gap:7px;padding:10px 20px;font-size:14px;font-weight:500;display:inline-flex}.btn-glass:hover{box-shadow:var(--shadow-2),var(--shadow-inset);transform:translateY(-2px)}.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 22px var(--accent-soft),inset 0 1px 0 #ffffff47;border-color:#0000}.landing-hero{text-align:center;margin-bottom:64px}.landing-hero h1{letter-spacing:-.5px;font-size:clamp(30px,6vw,46px);font-weight:700;line-height:1.25}.landing-hero h1 em{color:var(--accent);font-style:normal}.landing-hero p{color:var(--text-2);max-width:620px;margin:18px auto 0;font-size:15px}.landing-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-bottom:40px;display:grid}.feature-card{-webkit-backdrop-filter:blur(20px)saturate(1.5);background:var(--glass);border:1px solid var(--glass-border);box-shadow:var(--shadow-1),var(--shadow-inset);transition:transform .4s var(--ease-spring),box-shadow .4s var(--ease-ios);border-radius:20px;padding:22px}.feature-card:hover{box-shadow:var(--shadow-2),var(--shadow-inset);transform:translateY(-3px)}.feature-card .f-ico{margin-bottom:10px;font-size:26px}.feature-card h2{margin-bottom:6px;font-size:15.5px;font-weight:600}.feature-card p{color:var(--text-2);font-size:13px}.landing-guide{-webkit-backdrop-filter:blur(20px)saturate(1.5);background:var(--glass);border:1px solid var(--glass-border);box-shadow:var(--shadow-1),var(--shadow-inset);border-radius:20px;padding:28px}.landing-guide h2{margin-bottom:14px;font-size:16px;font-weight:600}.landing-guide ol{color:var(--text-2);flex-direction:column;gap:8px;padding-left:22px;font-size:14px;display:flex}.landing-foot{text-align:center;color:var(--text-3);margin-top:44px;font-size:12px}.entry-wrap{justify-content:center;align-items:center;min-height:100vh;padding:22px;display:flex}.entry-card{-webkit-backdrop-filter:blur(26px)saturate(1.6);background:var(--glass-strong);border:1px solid var(--glass-border);width:100%;max-width:400px;box-shadow:var(--shadow-2),var(--shadow-inset);animation:rise .6s var(--ease-ios);border-radius:26px;overflow:hidden}@keyframes rise{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}.entry-head{text-align:center;border-bottom:1px solid var(--glass-border);padding:30px 28px 22px}.entry-avatar{background:linear-gradient(145deg,var(--accent),color-mix(in srgb,var(--accent)70%,var(--gold)));width:62px;height:62px;color:var(--accent-ink);box-shadow:0 10px 26px var(--accent-soft),inset 0 1px 0 #ffffff4d;border-radius:50%;justify-content:center;align-items:center;margin:0 auto 13px;font-size:26px;font-weight:600;display:flex}.entry-head h1{font-size:17px;font-weight:600}.entry-head p{color:var(--text-3);margin-top:3px;font-size:12.5px}.entry-body{padding:24px 28px 26px}.entry-error{text-align:center;background:var(--danger-soft);color:var(--danger);border-radius:18px;padding:20px 16px;font-size:13.5px}.entry-actions .btn-glass{justify-content:center;width:100%;padding:13px 18px;font-size:15px}.entry-foot{text-align:center;color:var(--text-3);padding:0 28px 20px;font-size:11px}.choice-list{flex-direction:column;gap:9px;margin-bottom:18px;display:flex}.choice-item{border:1px solid var(--glass-border);cursor:pointer;transition:border-color .3s var(--ease-ios),background .3s var(--ease-ios);border-radius:15px;align-items:flex-start;gap:12px;padding:14px;display:flex}.choice-item.on{border-color:var(--accent);background:var(--accent-soft)}.choice-item input{accent-color:var(--accent);margin-top:3px}.choice-item .c-title{font-size:14px;font-weight:500}.choice-item .c-desc{color:var(--text-3);margin-top:2px;font-size:12px}.entry-note{color:var(--text-2);margin-bottom:16px;font-size:12.5px}@media (max-width:480px){.landing{padding:34px 16px 30px}.landing-head{margin-bottom:42px}.entry-card{max-width:100%}}