:root{--ink:#10120f;--paper:#f3f0e8;--lime:#d9ff43;--muted:#686b63;--line:#d7d3c8;--white:#fff;--red:#bc392f}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif}
.nav{height:78px;display:flex;align-items:center;justify-content:space-between;padding:0 5vw;border-bottom:1px solid var(--line);position:relative;z-index:2}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;text-decoration:none;color:var(--ink)}
.brand-mark{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:var(--lime)}
.nav nav{display:flex;align-items:center;gap:28px}
.nav nav a{color:var(--ink);text-decoration:none;font-size:14px}
.button{border:0;border-radius:999px;padding:11px 20px;font-weight:700;cursor:pointer}
.ghost{background:transparent;border:1px solid var(--ink)}
.primary{background:var(--lime);color:var(--ink);box-shadow:0 5px 0 var(--ink);border:1px solid var(--ink)}
.dark{background:var(--ink);color:var(--white)}
.hero{min-height:640px;padding:105px 8vw 80px;position:relative;overflow:hidden;background:radial-gradient(circle at 80% 35%,#e2ff70 0 12%,transparent 12.5%),linear-gradient(118deg,transparent 63%,#dedacf 63%)}
.hero:after{content:"PM";position:absolute;right:7vw;bottom:-65px;font-size:300px;line-height:1;font-weight:950;letter-spacing:-30px;color:transparent;-webkit-text-stroke:2px var(--ink);opacity:.9}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:2px;text-transform:uppercase}
.hero h1{font-size:clamp(56px,8vw,116px);line-height:.91;letter-spacing:-6px;margin:28px 0}
.hero h1 em{font-family:Georgia,serif;font-weight:400}
.hero p{max-width:610px;font-size:19px;line-height:1.7;color:var(--muted)}
.hero-actions{display:flex;align-items:center;gap:28px;margin-top:35px}
.text-link{color:var(--ink);font-weight:700}
.trust{display:flex;gap:35px;margin-top:80px;font-size:13px;font-weight:700}
.trust span:before{content:"✓";margin-right:8px}
.section{padding:100px 8vw}
.section-head{display:flex;justify-content:space-between;gap:50px;align-items:end;margin-bottom:45px}
.section-head h2{font-size:clamp(40px,5vw,70px);letter-spacing:-3px;margin:12px 0 0}
.section-head p{max-width:430px;color:var(--muted);line-height:1.7}
.employee-card{background:var(--white);border:1px solid var(--ink);padding:28px;display:grid;grid-template-columns:220px 1fr auto;align-items:center;gap:35px;box-shadow:9px 9px 0 var(--ink)}
.portrait{height:220px;background:var(--lime);display:grid;place-items:center;position:relative;font-size:84px;font-weight:900}
.online{position:absolute;bottom:12px;left:12px;background:var(--white);font-size:12px;padding:5px 9px;border-radius:20px}
.online:before{content:"";display:inline-block;width:7px;height:7px;background:#48bd66;border-radius:50%;margin-right:5px}
.role{font-size:12px;color:var(--muted);font-weight:800}
.employee-main h3{font-size:36px;margin:7px 0 13px}
.employee-main p{line-height:1.7;color:var(--muted);max-width:680px}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chips span{border:1px solid var(--line);padding:6px 10px;border-radius:20px;font-size:12px}
.pricing{background:var(--ink);color:var(--white)}
.plan-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.plan{padding:30px;background:#252720;border:1px solid #4c4e45}
.plan.featured{background:var(--lime);color:var(--ink)}
.plan h3{font-size:25px}
.plan .price{font-size:46px;font-weight:900}
.plan p{color:inherit;opacity:.72}
.full{width:100%}
.modal{position:fixed;inset:0;background:#10120fd9;display:grid;place-items:center;z-index:20;padding:20px}
.hidden{display:none!important}
.modal-card{width:min(440px,100%);background:var(--paper);padding:38px;position:relative;border:1px solid var(--ink);box-shadow:10px 10px 0 var(--lime)}
.modal-card.wide{width:min(780px,100%)}
.close{position:absolute;right:15px;top:12px;border:0;background:none;font-size:28px;cursor:pointer}
.modal h2{font-size:31px}
.modal label{display:block;margin:16px 0;font-size:13px;font-weight:700}
.modal input:not([type=radio]){display:block;width:100%;padding:13px;margin-top:7px;border:1px solid var(--line);background:white;font:inherit}
.switch{border:0;background:none;text-decoration:underline;margin-top:18px;cursor:pointer}
.error{color:var(--red);font-size:13px}
.pay-type{display:flex;gap:25px}
.workspace{position:fixed;inset:0;z-index:10;background:#f7f6f1;display:grid;grid-template-columns:270px 1fr}
.workspace aside{background:var(--ink);color:white;padding:22px 17px;display:flex;flex-direction:column}
.workspace aside .brand{color:white;padding:0 7px 18px}
.new{border:1px solid #4b4d47;background:#252721;color:white;text-align:left}
.conversations{flex:1;overflow:auto;margin:18px 0}
.conversation{padding:11px;border-radius:7px;font-size:13px;cursor:pointer;color:#c8cac2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conversation:hover,.conversation.active{background:#2b2d28;color:white}
.profile{border-top:1px solid #343630;padding:16px 5px 0;display:grid;grid-template-columns:1fr auto;gap:5px}
.profile small{display:block;color:#92958b;max-width:150px;overflow:hidden;text-overflow:ellipsis}
.profile>span{background:var(--lime);color:var(--ink);padding:4px 8px;border-radius:20px;font-size:11px;font-weight:800}
.profile button{grid-column:1/-1;border:0;background:none;text-align:left;color:#92958b;padding:4px 0;cursor:pointer}
.chat{display:flex;flex-direction:column;min-width:0}
.chat-top{height:72px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 28px;gap:12px;background:white}
.chat-top div{flex:1}
.chat-top small{display:block;color:var(--muted)}
#mobileMenu{display:none}
.messages{flex:1;overflow:auto;padding:35px max(25px,calc((100% - 840px)/2)) 235px}
.welcome{text-align:center;padding-top:12vh}
.avatar{width:68px;height:68px;background:var(--lime);border:2px solid var(--ink);display:grid;place-items:center;margin:auto;font-weight:900;font-size:23px;transform:rotate(-4deg)}
.welcome h2{font-size:36px}
.welcome p{color:var(--muted)}
.prompts{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;margin-top:28px}
.prompts button{background:white;border:1px solid var(--line);padding:10px 13px;border-radius:8px;cursor:pointer}
.message{max-width:780px;margin:0 auto 25px;line-height:1.7;white-space:pre-wrap}
.message.user{background:var(--ink);color:white;padding:14px 18px;border-radius:15px 15px 3px 15px;width:fit-content;max-width:75%;margin-right:0}
.message.assistant:before{content:"林序 · 产品经理";display:block;font-size:11px;font-weight:800;color:var(--muted);margin-bottom:7px}
.usage,.image-usage{margin-top:10px;padding-top:8px;border-top:1px solid var(--line);color:var(--muted);font-size:11px;line-height:1.5}
.generated-images{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:15px}
.generated-image{display:block;border:1px solid var(--line);background:#e6e4dc}
.generated-image img{display:block;width:100%;aspect-ratio:1;object-fit:cover}
.composer{position:absolute;bottom:25px;left:calc(270px + max(25px,(100% - 270px - 840px)/2));right:max(25px,calc((100% - 270px - 840px)/2));background:white;border:1px solid var(--line);box-shadow:0 10px 30px #0001;padding:12px}
.composer textarea{width:100%;height:70px;resize:none;border:0;outline:0;font:inherit}
.image-options{border-top:1px solid var(--line);margin-top:8px;padding-top:9px}
.image-toggle{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:700;cursor:pointer}
.image-toggle input{accent-color:var(--ink)}
.image-toggle #imagePrice{display:inline;font-size:11px;color:var(--muted);margin:0;white-space:normal}
.image-details{display:grid;grid-template-columns:110px minmax(0,1fr);gap:8px 14px;margin-top:9px}
.image-details label{font-size:11px;font-weight:700;color:var(--muted)}
.image-details select,.image-details input{width:100%;margin-top:4px;border:1px solid var(--line);background:white;padding:5px;font:inherit;font-size:12px}
.composer-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:10px}
.model-meta{min-width:0}
.model-meta label{font-size:12px;font-weight:700}
.model-meta select{max-width:190px;margin-left:5px;border:1px solid var(--line);background:white;padding:4px;font:inherit;font-size:12px}
.composer span{display:block;font-size:11px;color:var(--muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:540px}
@media(max-width:760px){.nav nav a{display:none}
.hero{padding-top:70px}
.hero h1{letter-spacing:-3px}
.hero:after{font-size:180px;opacity:.25}
.trust{flex-wrap:wrap}
.section{padding:70px 5vw}
.section-head{display:block}
.employee-card{grid-template-columns:1fr}
.portrait{height:170px}
.plan-grid{grid-template-columns:1fr}
.workspace{grid-template-columns:1fr}
.workspace aside{display:none}
.workspace.menu aside{display:flex;position:absolute;inset:0 auto 0 0;width:270px;z-index:3}
.composer{left:15px;right:15px;bottom:12px}
.composer span{max-width:220px}
.image-details{grid-template-columns:1fr}
#mobileMenu{display:block;border:0;background:none;font-size:20px}
}