*{box-sizing:border-box;margin:0;padding:0}
:root{
  --mint:#a7e9d8;--mint2:#7dd3c0;--mint-deep:#5fbfa8;
  --orange:#ff8a3d;--orange2:#ff6a1a;--orange-soft:#ffd9b8;
  --txt:#2f4a42;--mut:#7d9a92;--mut2:#a8c0b9;--line:#e6f0ec;
}
html,body{height:100%}
body{font-family:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--txt);min-height:100vh;overflow-x:hidden;position:relative}
/* 模糊亮房间背景 */
.bg{position:fixed;inset:0;z-index:0;background:url('bg.jpg') center/cover no-repeat;transform:scale(1.08);filter:blur(2px)}
.bg::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(243,255,249,.28),rgba(255,250,240,.18) 60%,rgba(255,255,255,.28));backdrop-filter:saturate(1.05)}
.wrap{position:relative;z-index:2;max-width:1320px;margin:0 auto;padding:30px 44px;display:grid;grid-template-columns:1fr 1.1fr 1fr;gap:30px;align-items:center;min-height:100vh}
/* 顶栏 */
.top{position:fixed;top:0;left:0;right:0;z-index:5;display:flex;justify-content:space-between;align-items:center;padding:22px 44px}
.brand{display:flex;align-items:center;gap:11px}
.brand .logo{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,var(--mint2),var(--mint-deep));display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:#fff;box-shadow:0 8px 18px -4px rgba(95,191,168,.5),inset 0 2px 4px rgba(255,255,255,.5)}
.brand .t{font-size:14px;font-weight:700;letter-spacing:-.005em;white-space:nowrap}
.brand .s{font-size:10.5px;color:var(--mut);letter-spacing:.12em;margin-top:2px}
.slogan{text-align:right;font-size:13px;color:var(--mut);max-width:260px;line-height:1.5}
.slogan b{color:var(--orange2)}
/* 左侧 */
.left{padding-top:30px}
.left h1{font-size:40px;font-weight:800;line-height:1.16;letter-spacing:-.02em;margin-bottom:14px}
.left h1 em{font-style:normal;color:var(--orange2);position:relative}
.left h1 em::after{content:"";position:absolute;left:-2px;right:-2px;bottom:4px;height:12px;background:var(--orange-soft);border-radius:8px;z-index:-1;opacity:.7}
.left .tag{font-size:14.5px;color:var(--mut);margin-bottom:24px;line-height:1.7}
.feats{display:flex;flex-direction:column;gap:11px}
.feat{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.78);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.9);border-radius:18px;padding:12px 15px;box-shadow:0 8px 20px -8px rgba(95,191,168,.3),inset 0 1px 2px rgba(255,255,255,.6)}
.feat .ic{width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#fff;box-shadow:inset 0 2px 3px rgba(255,255,255,.4)}
.feat.f1 .ic{background:linear-gradient(135deg,#ff9d5c,#ff7a2a)}
.feat.f2 .ic{background:linear-gradient(135deg,var(--mint2),var(--mint-deep))}
.feat.f3 .ic{background:linear-gradient(135deg,#b8e88a,#7cc94f)}
.feat .ft{font-size:13.5px;font-weight:600}
.feat .fd{font-size:11.5px;color:var(--mut);margin-top:2px}
/* 中央：单独的小毛球自由跳跃（带质感） */
.center{position:relative;display:flex;align-items:center;justify-content:center;min-height:440px}
.stage{position:relative;display:flex;align-items:center;justify-content:center;width:100%}
.scene{
  width:420px;max-width:100%;
  -webkit-mask:radial-gradient(ellipse 48% 48% at 50% 48%,#000 74%,rgba(0,0,0,.5) 88%,transparent 100%);
  mask:radial-gradient(ellipse 48% 48% at 50% 48%,#000 74%,rgba(0,0,0,.5) 88%,transparent 100%);
  filter:drop-shadow(0 26px 34px rgba(95,191,168,.4)) saturate(1.04) contrast(1.03);
  animation:floaty 6s ease-in-out infinite;
  user-select:none;-webkit-user-drag:none;
}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-12px) rotate(1deg)}}
.bubble{position:absolute;top:2%;right:4%;background:#fff;padding:11px 18px;border-radius:22px;font-size:13.5px;font-weight:600;box-shadow:0 10px 24px -8px rgba(0,0,0,.15);animation:floaty 6s ease-in-out infinite;z-index:3}
.bubble::after{content:"";position:absolute;bottom:-8px;left:20px;border:9px solid transparent;border-top-color:#fff;border-bottom:0}
.note{position:absolute;bottom:8%;left:-2%;background:#fff7c4;color:#7a5b00;padding:12px 14px;font-size:12.5px;font-weight:600;line-height:1.5;width:150px;box-shadow:0 10px 22px -8px rgba(0,0,0,.18);transform:rotate(-5deg);animation:floaty 7s ease-in-out infinite;z-index:3}
.note::before{content:"";position:absolute;top:-9px;left:50%;width:34px;height:14px;background:#ffe88a;transform:translateX(-50%);border-radius:0 0 6px 6px;opacity:.8}
.peek{position:absolute;top:-46px;right:-10px;width:90px;z-index:6;filter:drop-shadow(0 8px 10px rgba(95,191,168,.35));animation:peek 4s ease-in-out infinite;pointer-events:none}
@keyframes peek{0%,100%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-6px) rotate(3deg)}}
/* 右侧云朵登录卡 */
.right{position:relative}
.cloud{position:relative;width:380px;max-width:100%;aspect-ratio:3/4;background:url('cloud.jpg') center/cover no-repeat;padding:84px 54px 70px;box-shadow:0 30px 60px -22px rgba(95,191,168,.4);border:0;border-radius:30px}
.cloud h2{font-size:22px;font-weight:700;text-align:center;margin-bottom:5px;letter-spacing:-.01em}
.cloud .sub{text-align:center;font-size:12.5px;color:var(--mut);margin-bottom:24px;line-height:1.6}
.cloud .sub b{color:var(--orange2);font-weight:600}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;font-weight:600;margin-bottom:6px;color:var(--txt)}
.ip{position:relative;background:#f6fbf8;border-radius:15px;box-shadow:inset 0 2px 5px rgba(95,191,168,.1);border:1.5px solid var(--line);transition:.16s}
.ip:focus-within{border-color:var(--mint-deep);box-shadow:0 0 0 4px rgba(95,191,168,.15),inset 0 2px 5px rgba(95,191,168,.1)}
.ip svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:17px;height:17px;color:var(--mint-deep)}
.ip input{width:100%;padding:12px 14px 12px 42px;border:0;background:transparent;font-size:14px;font-family:inherit;color:var(--txt);outline:none}
.ip input::placeholder{color:var(--mut2)}
.btn{width:100%;margin-top:6px;padding:13px;border:0;border-radius:16px;background:linear-gradient(135deg,var(--mint2),var(--mint-deep));color:#fff;font-size:14.5px;font-weight:600;cursor:pointer;font-family:inherit;box-shadow:0 14px 26px -8px rgba(95,191,168,.6),inset 0 2px 4px rgba(255,255,255,.3);transition:.16s;display:flex;align-items:center;justify-content:center;gap:8px}
.btn:hover{transform:translateY(-2px);box-shadow:0 20px 34px -8px rgba(95,191,168,.7),inset 0 2px 4px rgba(255,255,255,.3)}
.btn svg{width:18px;height:18px}
.row{display:flex;justify-content:space-between;align-items:center;margin:14px 0 18px;font-size:12px;color:var(--mut)}
.row label{display:flex;align-items:center;gap:6px;cursor:pointer}
.row a{color:var(--mint-deep);text-decoration:none}
.row a:hover{text-decoration:underline}
.divider{display:flex;align-items:center;gap:12px;margin:16px 0 12px;color:var(--mut2);font-size:11px}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.demo{text-align:center;font-size:12px;color:var(--mut)}
.demo button{background:none;border:0;color:var(--orange2);cursor:pointer;font-family:inherit;font-size:12px;text-decoration:underline}
/* 页脚 */
.foot{position:fixed;bottom:0;left:0;right:0;z-index:5;display:flex;justify-content:space-between;align-items:center;padding:16px 44px;font-size:11.5px;color:var(--mut);flex-wrap:wrap;gap:10px}
.foot .trust{display:flex;gap:20px}
.foot .trust span{display:flex;align-items:center;gap:5px}
.foot .right-slogan{font-style:italic;color:var(--mint-deep)}
@media(max-width:1100px){.wrap{grid-template-columns:1fr;gap:20px;padding:80px 24px 60px}.center{order:-1}.mascot{width:240px}.left h1{font-size:30px}.top{position:relative;padding:18px 24px}.foot{position:relative}}