*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:linear-gradient(120deg,#100c25,#1b1140,#2a1a5a,#1b1140);background-size:300% 300%;animation:gradientShift 18s infinite ease-in-out;color:#f5f7ff;overflow-x:hidden}
.stage{position:relative;min-height:100%;display:grid;place-content:center;padding:6vh 6vw 12vh;gap:2.4rem;text-align:center}
.title{font-family:"ZCOOL XiaoWei","Noto Sans SC",serif;line-height:1.2;font-size:clamp(28px,5vw,56px);letter-spacing:.02em}
.subtitle{opacity:.9;font-size:clamp(14px,2.2vw,20px)}
.controls{display:grid;gap:1rem;justify-items:center}
.input-wrap{display:flex;gap:.6rem;align-items:center;background:rgba(255,255,255,.06);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:.6rem}
.input-wrap input{width:min(62vw,520px);padding:.7rem 1rem;border:none;outline:none;border-radius:10px;background:rgba(255,255,255,.12);color:#fff;font-size:16px}
.input-wrap .primary{padding:.7rem 1.1rem;border:none;border-radius:10px;background:linear-gradient(135deg,#6a79ff,#9a6aff);color:#fff;font-weight:700;cursor:pointer;transition:.25s transform,.25s filter}
.input-wrap .primary:hover{transform:translateY(-1px);filter:brightness(1.06)}
.btn-row{display:flex;gap:.8rem}
.btn-row button{padding:.6rem 1rem;border-radius:10px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:#fff;cursor:pointer;transition:.25s}
.btn-row button:hover{background:rgba(255,255,255,.14)}
.panel{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;max-width:980px;margin:0 auto}
.panel-col{background:rgba(255,255,255,.06);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:1rem}
.panel h2{margin:.2rem 0 .6rem;font-family:"ZCOOL XiaoWei","Noto Sans SC",serif}
.sky{position:fixed;inset:0;pointer-events:none;overflow:hidden}
.thought{position:absolute;max-width:60vw;padding:.6rem .8rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(8px);border-radius:16px;color:#fff;box-shadow:0 8px 24px rgba(0,0,0,.25);transform-origin:50% 100%;animation:floatUp linear forwards,fadeIn .6s ease-out}
.particle{position:absolute;border-radius:50%;background:radial-gradient(circle at 30% 30%,#fff,rgba(255,255,255,.05));opacity:.7;filter:blur(.2px);animation:drift linear infinite}
@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes floatUp{0%{transform:translateY(10vh) scale(.95) rotate(var(--r,0deg));opacity:0}8%{opacity:1}92%{opacity:.88}100%{transform:translateY(-110vh) scale(1) rotate(calc(var(--r,0deg) + 12deg));opacity:0}}
@keyframes drift{0%{transform:translate3d(0,0,0)}100%{transform:translate3d(var(--dx,0),var(--dy,0),0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@media (max-width:880px){.panel{grid-template-columns:1fr}.panel-col{padding:.9rem}.thought{max-width:76vw}}