@import url('https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600;700;800&family=Geist+Mono:wght@400;500&display=swap');

/* ============================================================
   AI HUMAN CLUB — brand system
   accent #d9ff6a (lime) · ink #111318 · bg #f6f4ef (cream)
   Geist type · rounded-full pills · warm, light, modern
   ============================================================ */
:root{
  --bg:#f6f4ef; --bg2:#efece3; --card:#ffffff; --card2:#f6f4ef;
  --line:rgba(17,19,24,.12); --line2:rgba(17,19,24,.07);
  --ink:#111318; --muted:rgba(17,19,24,.62); --dim:rgba(17,19,24,.42);
  --accent:#d9ff6a; --accent-2:#c9f24e; --accent-ink:#111318;
  --ink-panel:#12130f; /* dark contrast panels, AIHC-style */
  --violet:#8b5cf6; --amber:#fcd34d;
  --ok:#16a34a; --ok-bg:#eafbe7; --danger:#dc2626; --danger-bg:#fdecec;
  --warn:#b45309; --warn-bg:#fdf3e2; --info-bg:#eef6ff;
  --radius:18px; --radius-sm:12px;
  --shadow:0 1px 2px rgba(17,19,24,.05), 0 12px 40px rgba(17,19,24,.07);
  --shadow-sm:0 1px 2px rgba(17,19,24,.06), 0 4px 14px rgba(17,19,24,.05);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Geist',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.55;
  -webkit-font-smoothing:antialiased; letter-spacing:-.01em;
}
a{color:inherit;text-decoration:none}
.mono{font-family:'Geist Mono',ui-monospace,monospace}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.narrow{max-width:460px}.mid{max-width:820px}

/* nav */
.nav{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;max-width:1120px;margin:0 auto}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.02em;font-size:16px}
.brand .logo{width:34px;height:34px;border-radius:10px;background:var(--accent);display:grid;place-items:center;font-size:17px;box-shadow:inset 0 0 0 1px rgba(17,19,24,.08)}
.logo-img{height:30px;width:auto;display:block}
.brand .sep{color:var(--line);font-weight:300}
.brand .desc{font-size:13px;color:var(--muted);font-weight:500}
.side .logo-img{height:26px}
.nav-links{display:flex;align-items:center;gap:22px;color:var(--muted);font-weight:500;font-size:14px}
.nav-links a:hover{color:var(--ink)}

/* buttons — rounded-full pills */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:999px;font-weight:600;font-size:14px;cursor:pointer;
  border:1px solid transparent;transition:.15s;white-space:nowrap;font-family:inherit;letter-spacing:-.01em}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:0 6px 18px rgba(180,220,80,.45)}
.btn-primary:hover{background:var(--ink);color:#fff}
.btn-ghost{background:var(--card);border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--bg2);border-color:rgba(17,19,24,.22)}
.btn-accent{background:var(--ink);color:#fff}
.btn-accent:hover{background:#000}
.btn-danger{background:transparent;border-color:#f0c4c4;color:var(--danger)}
.btn-danger:hover{background:var(--danger-bg)}
.btn-sm{padding:8px 14px;font-size:13px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* hero */
.hero{text-align:center;padding:72px 0 44px}
.pill{display:inline-flex;gap:8px;align-items:center;padding:7px 15px;border:1px solid var(--line);border-radius:999px;color:var(--ink);font-size:13px;font-weight:500;background:var(--card);box-shadow:var(--shadow-sm)}
.hero h1{font-size:clamp(36px,6.2vw,60px);line-height:1.03;margin:22px auto 16px;max-width:840px;letter-spacing:-.035em;font-weight:700}
.hero h1 .grad{background:var(--accent);padding:0 .12em;border-radius:.14em;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.hero p.lead{font-size:19px;color:var(--muted);max-width:620px;margin:0 auto 30px}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.trust{margin-top:20px;color:var(--dim);font-size:13px}

/* sections */
.section{padding:52px 0}
.section h2{font-size:clamp(26px,4vw,34px);letter-spacing:-.03em;margin:0 0 10px;text-align:center;font-weight:700}
.section .sub{color:var(--muted);text-align:center;max-width:580px;margin:0 auto 38px}
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:820px){.grid-3,.grid-2{grid-template-columns:1fr}}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.feature .ic{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:21px;background:var(--accent);margin-bottom:14px}
.feature h3{margin:0 0 6px;font-size:17px;font-weight:600;letter-spacing:-.02em}
.feature p{margin:0;color:var(--muted);font-size:14px}

/* pricing */
.price-card{text-align:center;position:relative}
.price-card.pop{border-color:var(--ink);box-shadow:0 20px 50px rgba(17,19,24,.12)}
.price-card .tag{position:absolute;top:-11px;left:50%;transform:translateX(-50%);background:var(--accent);color:var(--accent-ink);font-size:11px;font-weight:700;letter-spacing:.04em;padding:5px 14px;border-radius:999px}
.price-card .amt{font-size:40px;font-weight:700;margin:8px 0 2px;letter-spacing:-.03em}
.price-card .amt small{font-size:15px;color:var(--muted);font-weight:500}
.price-card ul{list-style:none;padding:0;margin:18px 0 22px;text-align:left}
.price-card li{padding:7px 0;color:var(--ink);font-size:14px;display:flex;gap:10px}
.price-card li::before{content:"✓";color:var(--ink);font-weight:800;background:var(--accent);border-radius:50%;width:18px;height:18px;display:grid;place-items:center;font-size:11px;flex:0 0 auto;margin-top:2px}

/* auth */
.auth-wrap{min-height:calc(100vh - 78px);display:grid;place-items:center;padding:24px}
.auth-card{width:100%;max-width:430px;box-shadow:var(--shadow)}
.auth-card h1{font-size:25px;margin:0 0 4px;letter-spacing:-.03em}
.auth-card .muted{color:var(--muted);font-size:14px;margin-bottom:22px}
label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin:14px 0 6px}
input,select,textarea{width:100%;padding:11px 14px;background:var(--card);border:1px solid var(--line);border-radius:12px;color:var(--ink);font-size:14px;font-family:inherit;transition:.12s}
input::placeholder,textarea::placeholder{color:var(--dim)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(217,255,106,.5)}
textarea{resize:vertical;min-height:70px}
.form-row{display:flex;gap:12px}.form-row>div{flex:1}
.msg{margin-top:14px;font-size:14px;padding:10px 13px;border-radius:11px;display:none}
.msg.err{display:block;background:var(--danger-bg);color:var(--danger);border:1px solid #f2cccc}
.msg.ok{display:block;background:var(--ok-bg);color:#15803d;border:1px solid #c7ecc0}
.auth-alt{margin-top:18px;text-align:center;color:var(--muted);font-size:14px}
.auth-alt a{color:var(--ink);font-weight:600;text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px}

/* app shell */
.app{display:grid;grid-template-columns:242px 1fr;min-height:100vh}
.side{background:var(--card);border-right:1px solid var(--line);padding:22px 14px;display:flex;flex-direction:column;gap:4px}
.side .brand{margin:4px 8px 20px}
.side a.item{display:flex;align-items:center;gap:11px;padding:10px 13px;border-radius:12px;color:var(--muted);font-weight:500;font-size:14px;cursor:pointer;transition:.12s}
.side a.item:hover{background:var(--bg2);color:var(--ink)}
.side a.item.active{background:var(--accent);color:var(--accent-ink);font-weight:600}
.side .spacer{flex:1}
.side-label{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--dim);padding:16px 13px 6px}
/* stat cards */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media(max-width:820px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;box-shadow:var(--shadow-sm)}
.stat .v{font-size:30px;font-weight:700;letter-spacing:-.03em}
.stat .l{font-size:12.5px;color:var(--muted);margin-top:2px}
.stat.accent{background:var(--accent)}
.stat.ink{background:var(--ink-panel);color:#fff}
.stat.ink .l{color:rgba(255,255,255,.6)}
/* chips (segments/labels) */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.chip{padding:7px 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:13px;font-weight:500;cursor:pointer}
.chip:hover{background:var(--bg2)}
.chip.on{background:var(--accent);border-color:transparent;color:var(--accent-ink);font-weight:600}
.tag-sel{padding:5px 9px;font-size:12px;border-radius:8px;width:auto}
.audience-opt{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line);border-radius:12px;margin-bottom:8px;cursor:pointer}
.audience-opt.on{border-color:var(--ink);background:var(--card2)}
.audience-opt input{width:auto;margin-top:3px}
.qr-item{display:flex;gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:12px;margin-bottom:8px;background:var(--card)}
.qr-short{font-family:'Geist Mono',monospace;font-weight:600;background:var(--accent);color:var(--accent-ink);padding:3px 9px;border-radius:7px;font-size:13px;flex:0 0 auto}
.qr-body{flex:1;font-size:14px;color:var(--ink);min-width:0}
.qr-pop{position:absolute;bottom:64px;left:16px;right:16px;max-height:220px;overflow-y:auto;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);z-index:20}
.qr-pop .qp{display:flex;gap:10px;padding:9px 12px;cursor:pointer;border-bottom:1px solid var(--line2);align-items:center}
.qr-pop .qp:hover,.qr-pop .qp.sel{background:var(--bg2)}
.warn-box{background:var(--warn-bg);border:1px solid #f0dcb8;border-radius:12px;padding:12px 14px;font-size:13px;color:#7a4f0a}
.main{padding:34px 40px;max-width:960px}
.main h1{font-size:27px;margin:0 0 4px;letter-spacing:-.03em;font-weight:700}
.pagesub{color:var(--muted);margin:0 0 26px}

/* badges */
.badge{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:600;border:1px solid transparent}
.badge.dot::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.badge.live{color:#15803d;background:var(--ok-bg)}
.badge.pending{color:var(--warn);background:var(--warn-bg)}
.badge.setup{color:#4d5058;background:var(--bg2)}
.badge.off{color:var(--danger);background:var(--danger-bg)}

/* stepper */
.steps{display:flex;gap:10px;margin-bottom:24px;flex-wrap:wrap}
.step{flex:1;min-width:130px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--card);box-shadow:var(--shadow-sm)}
.step .n{font-size:11px;color:var(--dim);font-weight:700;letter-spacing:.04em}
.step.on{border-color:var(--ink);background:#fff}
.step.on .n{color:var(--ink)}
.step.on h4::after{content:"";display:inline-block;margin-left:6px;width:8px;height:8px;border-radius:50%;background:var(--accent)}
.step h4{margin:3px 0 0;font-size:14px;font-weight:600}

.rowlist .rl-item{display:flex;gap:8px;margin-bottom:8px}
.rowlist input{flex:1}
.hint{color:var(--dim);font-size:12.5px;margin-top:6px}
.kv{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line2);align-items:center}
.kv:last-child{border:0}
.kv .k{color:var(--muted);font-size:14px}
.kv .v{font-weight:600;font-size:14px;text-align:right}
pre.preview{background:var(--ink-panel);border:1px solid var(--line);border-radius:14px;padding:18px;overflow:auto;font-size:12.5px;color:#e9ecdf;max-height:360px;font-family:'Geist Mono',monospace}
table.acc{width:100%;border-collapse:collapse}
table.acc th{text-align:left;font-size:12px;color:var(--muted);font-weight:600;padding:11px 12px;border-bottom:1px solid var(--line)}
table.acc td{padding:12px;border-bottom:1px solid var(--line2);font-size:14px;vertical-align:middle}

/* inbox — WhatsApp-Web-like, AIHC light */
.inbox{display:grid;grid-template-columns:320px 1fr;height:calc(100dvh - 40px);border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--card);box-shadow:var(--shadow-sm)}
.inbox.show-contact{grid-template-columns:300px 1fr 300px}
.ib-contact{border-left:1px solid var(--line);background:var(--card);overflow-y:auto;padding:24px 20px;display:none}
.inbox.show-contact .ib-contact{display:block}
.ib-c-av{width:96px;height:96px;border-radius:50%;margin:0 auto 14px;display:grid;place-items:center;font-weight:700;font-size:34px;color:var(--ink);background:var(--bg2);box-shadow:inset 0 0 0 1px var(--line);overflow:hidden}
.ib-c-av img{width:100%;height:100%;object-fit:cover}
.ib-c-name{text-align:center;font-size:18px;font-weight:700;letter-spacing:-.02em}
.ib-c-phone{text-align:center;color:var(--muted);font-size:14px;margin-top:2px;cursor:pointer}
.ib-c-sec{margin-top:20px;border-top:1px solid var(--line2);padding-top:16px}
.ib-c-sec h5{margin:0 0 8px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--dim)}
.ib-c-sec p{margin:0;font-size:14px;color:var(--ink)}
.ib-c-media{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.ib-c-media img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:8px;cursor:pointer}
.ib-c-tag{display:inline-block;padding:4px 11px;border-radius:999px;background:var(--accent);color:var(--accent-ink);font-size:12px;font-weight:600}
.ib-icon-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--card);cursor:pointer;font-size:15px;display:grid;place-items:center;flex:0 0 auto}
.ib-icon-btn:hover{background:var(--bg2)}
.ib-icon-btn.on{background:var(--accent);border-color:transparent}
.ib-list{border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--card)}
.ib-list-head{padding:15px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:8px}
.ib-list-head b{font-size:16px;letter-spacing:-.02em}
.ib-search{margin:10px 12px;flex:0 0 auto}
.ib-search input{padding:9px 13px;font-size:13px;border-radius:999px;background:var(--bg2);border-color:transparent}
.ib-chats{flex:1;min-height:0;overflow-y:auto}
.ib-chat{display:flex;gap:12px;padding:11px 14px;cursor:pointer;border-bottom:1px solid var(--line2);align-items:center}
.ib-chat:hover{background:var(--bg2)}
.ib-chat.active{background:var(--accent)}
.ib-av{width:44px;height:44px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;font-weight:700;color:var(--ink);font-size:15px;background:var(--bg2);box-shadow:inset 0 0 0 1px var(--line)}
.ib-chat.active .ib-av{background:#fff}
.ib-chat-main{min-width:0;flex:1}
.ib-chat-top{display:flex;justify-content:space-between;gap:8px}
.ib-name{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ib-time{color:var(--dim);font-size:11px;flex:0 0 auto}
.ib-chat.active .ib-time{color:rgba(17,19,24,.6)}
.ib-preview{color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}
.ib-chat.active .ib-preview{color:rgba(17,19,24,.7)}
.ib-conv{display:flex;flex-direction:column;min-width:0;min-height:0;background:#faf9f5}
.ib-conv-head{padding:12px 18px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;background:var(--card)}
.ib-conv-head .ib-av{width:38px;height:38px;font-size:14px}
.ib-msgs{flex:1;min-height:0;overflow-y:auto;padding:20px 8%;display:flex;flex-direction:column;gap:6px}
.ib-empty{flex:1;display:grid;place-items:center;color:var(--dim);text-align:center;padding:40px}
.bubble{max-width:72%;padding:8px 12px;border-radius:14px;font-size:14px;line-height:1.45;word-wrap:break-word;white-space:pre-wrap;position:relative;box-shadow:0 1px 1px rgba(17,19,24,.06)}
.bubble .bt{display:block;font-size:10px;color:rgba(17,19,24,.4);text-align:right;margin-top:3px}
.bubble.in{align-self:flex-start;background:#fff;border-top-left-radius:5px}
.bubble.out{align-self:flex-end;background:#eaffbf;border-top-right-radius:5px}
.bubble.out.bot{background:#efeaff}
.bubble .who{font-size:10.5px;color:#5b6470;font-weight:700;margin-bottom:2px}
.bubble.out.bot .who{color:var(--violet)}
.ib-compose{display:flex;gap:10px;padding:12px 16px;border-top:1px solid var(--line);background:var(--card);align-items:center}
.ib-compose textarea{flex:1;min-height:0;height:42px;max-height:120px;padding:10px 16px;border-radius:22px;resize:none;background:var(--bg2);border-color:transparent}
.ib-compose button{flex:0 0 auto}
.bubble.sticker{background:transparent!important;box-shadow:none;padding:2px}
.ib-media{max-width:240px;max-height:300px;border-radius:11px;display:block;cursor:pointer;margin:2px 0}
.ib-sticker{width:120px;height:120px;object-fit:contain;display:block}
.ib-cap{margin-top:5px;font-size:14px;white-space:pre-wrap}
.ib-doc{display:inline-flex;gap:7px;align-items:center;color:var(--ink);text-decoration:none;padding:8px 11px;background:rgba(17,19,24,.05);border-radius:10px}
.ib-doc:hover{background:rgba(17,19,24,.1)}
.ib-attach{flex:0 0 auto;display:grid;place-items:center;width:42px;height:42px;border-radius:50%;border:1px solid var(--line);cursor:pointer;font-size:18px;background:var(--card)}
.ib-attach:hover{background:var(--bg2)}
@media(max-width:820px){.inbox{grid-template-columns:1fr}.ib-list.hide-mobile{display:none}}

.footer{border-top:1px solid var(--line);margin-top:44px;padding:28px 0;color:var(--dim);font-size:13px;text-align:center}
.center{text-align:center}
.mt8{margin-top:8px}.mt16{margin-top:16px}.mt24{margin-top:24px}
.hide{display:none!important}