:root{color-scheme:light;--bg:#f8f9fc;--muted:#6b7280;--primary:#4f46e5;--primary-light:#818cf8;--line:rgba(0,0,0,.08);--card-bg:#fff;--text-dark:#1e293b}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text-dark);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Microsoft YaHei",sans-serif;font-size:14px;line-height:1.5}
button,input,select{font:inherit}
button,a,input,select{-webkit-tap-highlight-color:transparent}
button{cursor:pointer}
button:focus-visible,a:focus-visible,[role=slider]:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
button:disabled{cursor:not-allowed;opacity:.45}
button{color:inherit}
a{color:inherit;text-decoration:none}
.svg-defs{position:absolute;width:0;height:0;overflow:hidden}
.heart-icon{width:32px;height:32px;filter:drop-shadow(0 2px 4px rgba(79,70,229,.25))}
.brand{display:flex;align-items:center;gap:10px}
.brand-text,.gradient-text{background:linear-gradient(135deg,#4f46e5,#7c3aed,#06b6d4);background-clip:text;-webkit-background-clip:text;color:transparent;font-weight:800}
.brand-text{font-size:20px}
.primary{background:linear-gradient(135deg,#4f46e5,#7c3aed);border:0;border-radius:12px;font-weight:700;padding:14px 28px;min-height:48px;color:#fff;transition:transform .15s,box-shadow .15s}
.primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px rgba(79,70,229,.35)}
.header{height:60px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.85);position:sticky;top:0;z-index:5;backdrop-filter:blur(12px)}
.header-inner{height:100%;max-width:1120px;padding:0 20px;margin:auto;display:flex;align-items:center;gap:12px}
.language-control{margin-left:auto}
.language-control select{min-width:120px;max-width:180px;border:1px solid var(--line);border-radius:8px;padding:6px 10px;background:#fff;color:var(--text-dark);font-size:13px}
.container{max-width:1120px;padding:28px 16px 0;margin:auto}
.hero{padding:20px 0 28px;background:radial-gradient(ellipse at 50% 0%,rgba(79,70,229,.08),transparent 60%)}
.online-pill{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(16,185,129,.3);background:rgba(16,185,129,.06);border-radius:20px;padding:6px 14px;color:#059669;font-size:12px;font-weight:600}
.online-pill>span:last-child{color:var(--muted)}
.online-dot{width:8px;height:8px;border-radius:50%;;background:#10b981;box-shadow:0 0 0 3px rgba(16,185,129,.2)}
.hero h1{font-size:38px;line-height:1.2;margin:18px 0 14px;font-weight:800;letter-spacing:-.5px;color:var(--text-dark)}
.hero p{color:var(--muted);font-size:15px;line-height:1.7;max-width:520px;margin:0 0 24px}
.featured{overflow:hidden;border:1px solid var(--line);border-radius:20px;background:var(--card-bg);box-shadow:0 1px 3px rgba(0,0,0,.04)}
.feature-image{position:relative;height:220px}
.feature-image img{width:100%;height:100%;object-fit:cover;object-position:center 30%}
.feature-badge{position:absolute;top:12px;left:12px;background:linear-gradient(135deg,var(--primary),#7c3aed);padding:5px 12px;border-radius:20px;font-size:11px;font-weight:700;color:#fff;box-shadow:0 4px 12px rgba(79,70,229,.3)}
.feature-info{padding:16px 20px 20px}
.person-heading{display:flex;align-items:center;gap:10px}
.person-heading h2{font-size:20px;margin:0;color:var(--text-dark)}
.status{font-size:11px;color:#10b981;font-weight:700;white-space:nowrap}
.status.pill{background:rgba(16,185,129,.1);color:#059669;padding:3px 10px;border-radius:20px}
.feature-info p{margin:6px 0;color:var(--muted);font-size:13px}
.feature-info .chat-count{font-size:12px;color:#94a3b8}
.actions{display:flex;gap:10px;margin-top:16px}
.action-button{display:flex;align-items:center;justify-content:center;gap:7px;background:var(--bg);border:1px solid var(--line);border-radius:11px;min-height:42px;flex:1;font-size:13px;font-weight:600;color:var(--text-dark);transition:background .15s}
.action-button:hover:not(:disabled){background:rgba(79,70,229,.06);border-color:var(--primary-light)}
.action-button svg{width:18px;height:18px;color:var(--primary)}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:32px 0 16px}
.section-heading h2{font-size:18px;margin:0;color:var(--text-dark);font-weight:700}
.section-heading>span{font-size:12px;color:var(--muted)}
.text-button{border:0;background:none;padding:4px 0;color:var(--primary);font-size:13px;font-weight:600}
.people-strip{display:flex;gap:12px;overflow-x:auto;scrollbar-width:none;padding-bottom:8px}
.people-strip::-webkit-scrollbar{display:none}
.person-card{position:relative;flex:0 0 140px;height:196px;border:1px solid var(--line);overflow:hidden;border-radius:16px;background:var(--card-bg);text-align:left;padding:0;transition:transform .15s,box-shadow .15s}
.person-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.08)}
.person-card img{width:100%;height:100%;object-fit:cover}
.person-card:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(255,255,255,.95))}
.person-card .status{position:absolute;top:10px;left:10px;z-index:1;padding:4px 10px;border-radius:20px;background:rgba(16,185,129,.12);color:#059669;font-size:10px}
.person-card .status.busy{background:rgba(124,58,237,.1);color:#7c3aed}
.card-copy{position:absolute;bottom:12px;left:12px;right:10px;z-index:1}
.card-copy strong{display:block;font-size:14px;color:var(--text-dark)}
.card-copy small{display:block;font-size:10px;color:var(--muted);white-space:nowrap;margin-top:3px}
.people-list{display:grid;gap:10px}
.person-row{display:flex;align-items:center;gap:14px;padding:12px 16px;background:var(--card-bg);border:1px solid var(--line);border-radius:16px;min-height:76px;transition:box-shadow .15s}
.person-row:hover{box-shadow:0 2px 8px rgba(0,0,0,.06)}
.avatar{position:relative;flex-shrink:0;width:52px;height:52px}
.avatar img{width:100%;height:100%;object-fit:cover;border-radius:14px}
.avatar:after{content:"";position:absolute;right:1px;bottom:1px;width:8px;height:8px;border:2px solid #fff;border-radius:50%;background:#10b981}
.row-copy{flex:1;min-width:0}
.row-copy strong{font-size:15px;color:var(--text-dark)}
.row-copy .status{margin-left:8px;font-size:11px}
.row-copy p{font-size:12px;color:var(--muted);margin:4px 0 0}
.row-actions{display:flex;gap:6px}
.row-actions .action-button{width:36px;min-height:36px;border-radius:10px;flex:none}
.bottom-cta{text-align:center;padding:44px 0 52px;background:linear-gradient(180deg,transparent,rgba(79,70,229,.03))}
.features{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;color:var(--muted);font-size:13px;margin-bottom:28px}
.features span{padding:8px 16px;background:var(--card-bg);border:1px solid var(--line);border-radius:30px;font-weight:600}
.bottom-cta h2{font-size:26px;margin:0 0 14px;color:var(--text-dark)}
.bottom-cta p{font-size:14px;color:var(--muted);margin:0 0 24px}
footer{border-top:1px solid var(--line);padding:24px 16px;text-align:center;color:#94a3b8;font-size:12px;margin-bottom:60px}
.sticky-join{position:fixed;bottom:0;left:0;right:0;border-top:1px solid var(--line);background:rgba(255,255,255,.92);padding:12px 16px calc(12px + env(safe-area-inset-bottom));z-index:5;backdrop-filter:blur(12px);box-shadow:0 -2px 10px rgba(0,0,0,.05)}
.sticky-join>div{max-width:480px;margin:auto;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.sticky-join .primary{margin-left:auto;padding:10px 22px;min-height:40px;border-radius:10px;font-size:13px}
.purple-dot{width:8px;height:8px;border-radius:50%;;background:var(--primary)}
.invite-page{padding:36px 16px 52px}
.invite-intro{text-align:center}
.gift-pill{display:inline-block;border-radius:20px;border:1px solid rgba(16,185,129,.3);background:rgba(16,185,129,.06);color:#059669;padding:6px 16px;font-size:12px;font-weight:700}
.invite-intro h1{font-size:28px;margin:20px 0 14px;color:var(--text-dark)}
.invite-intro p{font-size:14px;line-height:1.7;color:var(--muted);margin:0}
.signup-form{color-scheme:light;max-width:448px;margin:32px auto 0;background:var(--card-bg);border:1px solid var(--line);border-radius:20px;color:var(--text-dark);padding:32px 28px;box-shadow:0 4px 16px rgba(0,0,0,.04)}
.signup-form label{display:block;font-size:13px;font-weight:600;margin-bottom:8px;color:var(--text-dark)}
.signup-form>input,.signup-form select,.phone-field{width:100%;height:50px;border:1px solid #d1d5db;border-radius:11px;background:#fff;color:var(--text-dark);margin-bottom:20px;transition:border-color .15s,box-shadow .15s}
.signup-form input,.signup-form select{padding:0 14px;outline:none}
.signup-form input::placeholder{color:#9ca3af}
.signup-form input:focus,.signup-form select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
.phone-field{display:flex;overflow:hidden}
.phone-field>span{display:grid;place-items:center;min-width:60px;padding:0 12px;background:#f3f4f6;border-right:1px solid #d1d5db;font-weight:600;color:var(--text-dark);border-radius:11px 0 0 11px}
.phone-field input{border:0;border-radius:0 11px 11px 0;min-width:1px;flex:1}
.signup-button{width:100%;color:#fff;height:54px;margin:0;font-size:16px}
.terms{text-align:center;font-size:12px;color:#9ca3af;line-height:1.7;margin:20px 0 0}
.terms button{background:none;border:0;color:inherit;padding:0;font-size:inherit;text-decoration:underline}
.demo-notice{font-size:11px;color:#c4cdd5;text-align:center;line-height:1.6;margin:12px 0 0}
body.inviting footer{margin-bottom:0}
dialog{border:1px solid var(--line);border-radius:20px;background:var(--card-bg);color:var(--text-dark);width:calc(100% - 40px);max-width:420px;padding:28px;box-shadow:0 20px 60px rgba(0,0,0,.15)}
dialog::backdrop{background:rgba(0,0,0,.4);backdrop-filter:blur(4px)}
dialog h2{font-size:20px;margin:0 0 14px;color:var(--text-dark)}
dialog p{color:var(--muted);line-height:1.8;font-size:13px;white-space:pre-line}
.dialog-close{position:absolute;right:12px;top:10px;background:none;border:0;font-size:24px;color:#9ca3af}
.register-dialog{border:1px solid var(--line);border-radius:24px;background:var(--card-bg);color:var(--text-dark);width:calc(100% - 48px);max-width:380px;padding:36px 28px 28px;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.12)}
.register-dialog::backdrop{background:rgba(0,0,0,.4);backdrop-filter:blur(4px)}
.register-dialog-content{display:flex;flex-direction:column;align-items:center}
.register-spinner{width:48px;height:48px;border:4px solid #e5e7eb;border-top-color:var(--primary);border-radius:50%;animation:register-spin .8s linear infinite;margin-bottom:20px}
@keyframes register-spin{to{transform:rotate(360deg)}}
.register-dialog h2{font-size:20px;margin:0 0 8px;background:linear-gradient(135deg,#4f46e5,#7c3aed);background-clip:text;-webkit-background-clip:text;color:transparent;font-weight:800}
.register-dialog p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
.register-progress{width:100%;margin:18px 0 12px}
.register-progress-bar{width:100%;height:6px;background:#f3f4f6;border-radius:3px;overflow:hidden}
#register-progress-fill{height:100%;width:0%;border-radius:3px;background:linear-gradient(90deg,#4f46e5,#7c3aed);transition:width 1s linear}
.register-countdown{font-size:12px;color:var(--muted);font-weight:600}
#register-seconds{font-size:18px;font-weight:800;color:var(--primary)}

@media(min-width:900px){
  .header{height:64px}
  .container{padding-top:36px}
  .hero h1{font-size:48px}
  .feature-image{height:320px}
  .people-list{grid-template-columns:1fr 1fr}
  .person-card{flex-basis:166px;height:230px}
  .section-heading{margin-top:36px}
  .invite-page{padding-top:44px}
}

@media(max-width:420px){
  .hero h1{font-size:32px}
  .hero p{font-size:14px}
  .header{height:54px}
  .header-inner{padding:0 16px}
  .brand-text{font-size:18px}
  .online-pill{font-size:11px}
  .feature-image{height:240px}
  .actions{gap:6px}
  .action-button{font-size:12px;gap:4px}
  .person-row{padding:10px 12px;gap:10px}
  .row-copy .status{font-size:9px;margin-left:5px}
  .row-copy p{font-size:11px}
  .row-actions{gap:5px}
  .row-actions .action-button{width:32px;min-height:32px}
  .avatar{width:46px;height:46px}
  .invite-intro h1{font-size:24px}
  .signup-form{padding:24px 20px}
}

/* ====== Chat Page ====== */
body.chatting{overflow:hidden}
body.chatting footer,body.chatting .sticky-join{display:none}
.chat-page{position:fixed;inset:0;display:flex;flex-direction:column;height:100vh;background:var(--bg);z-index:10}
.chat-header{display:flex;align-items:center;gap:12px;padding:12px 16px;background:rgba(255,255,255,.9);border-bottom:1px solid var(--line);backdrop-filter:blur(12px);flex-shrink:0}
.chat-header .back-button{border:0;background:transparent;font-size:22px;width:36px;padding:0;color:var(--text-dark)}
.chat-partner-info{flex:1}
.chat-partner-name{font-size:16px;font-weight:700;color:var(--text-dark)}
.chat-status{font-size:12px;color:#10b981;font-weight:600}
.chat-avatar-sm{width:36px;height:36px;border-radius:50%;overflow:hidden}
.chat-avatar-sm img{width:100%;height:100%;object-fit:cover}
.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth}
.msg{display:flex;flex-direction:column;max-width:80%}
.msg-user{align-self:flex-end}
.msg-ai{align-self:flex-start}
.msg-bubble{padding:12px 16px;border-radius:18px;font-size:14px;line-height:1.5;word-break:break-word}
.msg-user .msg-bubble{background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;border-bottom-right-radius:6px}
.msg-ai .msg-bubble{background:var(--card-bg);color:var(--text-dark);border:1px solid var(--line);border-bottom-left-radius:6px}
.msg-time{font-size:10px;color:#94a3b8;margin-top:4px;padding:0 8px}
.msg-user .msg-time{text-align:right}
.chat-input-area{display:flex;gap:10px;padding:12px 16px;background:rgba(255,255,255,.95);border-top:1px solid var(--line);backdrop-filter:blur(12px);flex-shrink:0}
#chat-input{flex:1;height:44px;border:1px solid var(--line);border-radius:22px;padding:0 18px;background:#f8f9fc;color:var(--text-dark);font-size:14px;outline:none;transition:border-color .15s,box-shadow .15s}
#chat-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.12)}
#chat-input::placeholder{color:#9ca3af}
.chat-send-btn{width:44px;height:44px;border-radius:50%;border:0;background:linear-gradient(135deg,#4f46e5,#7c3aed);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:transform .15s}
.chat-send-btn:hover:not(:disabled){transform:scale(1.05)}
.chat-send-btn:disabled{opacity:.45}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{animation:none!important;transition:none!important}
}