:root{--green:#18a66a;--dark:#0f2a22;--bg:#eef3f1;--line:#dde7e3;--text:#17211f}
*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,Arial,sans-serif;color:var(--text);background:var(--bg)}
a{text-decoration:none;color:inherit}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 18px;border-radius:14px;font-weight:800;border:0;cursor:pointer}
.btn-primary{background:var(--green);color:#fff}.btn-dark{background:var(--dark);color:#fff}.btn-soft{background:#e5f6ef;color:#0e6a48}
.hero{min-height:88vh;padding:24px;background:linear-gradient(145deg,#ecfff7,#f6fbf9 60%,#e8f2ef);display:flex;align-items:center}
.wrap{width:min(1180px,92%);margin:auto}.nav{display:flex;justify-content:space-between;align-items:center;padding:18px 0}.brand{font-weight:900;font-size:24px}.brand span{color:var(--green)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center;padding:55px 0}.hero h1{font-size:clamp(42px,6vw,76px);line-height:.97;margin:0 0 22px}.hero p{font-size:20px;line-height:1.6;color:#4b615a}
.actions{display:flex;gap:12px;flex-wrap:wrap}.phone{background:#0f2a22;border-radius:36px;padding:14px;box-shadow:0 30px 70px #0f2a2230}.phone-inner{background:#f7faf9;border-radius:26px;overflow:hidden;min-height:620px}
.demo-head{background:var(--green);color:#fff;padding:18px;font-weight:800}.demo-chat{padding:20px}.bubble{max-width:78%;padding:12px 14px;border-radius:14px;margin:10px 0;line-height:1.4}.mine{margin-left:auto;background:#d7f8e9}.theirs{background:#fff;border:1px solid var(--line)}
.section{padding:78px 0;background:#fff}.section.alt{background:#f4f8f6}.section h2{font-size:38px;margin:0 0 14px}.section .lead{font-size:18px;color:#5a6f68;max-width:760px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:36px}.card{padding:25px;border:1px solid var(--line);border-radius:20px;background:#fff}.card h3{margin-top:0}
.app-shell{height:100vh;display:grid;grid-template-columns:370px 1fr;background:#fff}.sidebar{border-right:1px solid var(--line);background:#f8fbfa;display:flex;flex-direction:column}.side-top{padding:16px;border-bottom:1px solid var(--line)}.side-top-row{display:flex;align-items:center;justify-content:space-between}.avatar{width:44px;height:44px;border-radius:50%;background:#cde8dd;display:grid;place-items:center;font-weight:900;overflow:hidden}.search{margin-top:14px;width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fff}.conv-list{overflow:auto;flex:1}.conv{display:flex;gap:12px;padding:14px 16px;border-bottom:1px solid #edf2f0;cursor:pointer}.conv:hover{background:#eef7f3}.conv .meta{flex:1;min-width:0}.conv .name{font-weight:800}.conv .preview{color:#6e7f79;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:4px;font-size:14px}
.chat{display:flex;flex-direction:column;background:#eaf1ee}.chat-head{height:76px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 18px;gap:12px}.chat-body{flex:1;overflow:auto;padding:24px}.msg{max-width:68%;padding:10px 12px;border-radius:12px;margin:8px 0;background:#fff;box-shadow:0 2px 6px #00000008}.msg.me{margin-left:auto;background:#d9f8e9}.msg small{display:block;text-align:right;color:#6f807a;margin-top:4px}.composer{background:#fff;border-top:1px solid var(--line);padding:12px;display:flex;gap:10px}.composer input[type=text]{flex:1;border:1px solid var(--line);border-radius:14px;padding:13px}.icon-btn{border:0;border-radius:12px;padding:10px 13px;cursor:pointer}
.auth{min-height:100vh;display:grid;place-items:center;padding:25px}.auth-box{width:min(460px,100%);background:#fff;border-radius:22px;padding:28px;box-shadow:0 20px 60px #0001}.auth-box input{width:100%;padding:12px;border:1px solid var(--line);border-radius:12px;margin:6px 0 14px}
.top-actions{display:flex;gap:8px}.badge{font-size:12px;background:#e5f6ef;color:#0b7250;padding:5px 8px;border-radius:999px}
@media(max-width:800px){.hero-grid,.cards{grid-template-columns:1fr}.phone{max-width:500px;margin:auto}.app-shell{grid-template-columns:1fr}.sidebar{width:100%}.chat{display:none}.app-shell.chat-open .sidebar{display:none}.app-shell.chat-open .chat{display:flex}.section h2{font-size:31px}}

.profile-cover{height:210px;background:linear-gradient(135deg,#1aaf71,#0e6c4a);border-radius:22px 22px 0 0;background-size:cover;background-position:center}
.profile-card{background:#fff;border-radius:22px;overflow:hidden;border:1px solid var(--line)}
.profile-main{padding:0 24px 24px}.profile-avatar{width:112px;height:112px;border-radius:50%;border:5px solid #fff;margin-top:-56px;background:#d7eee5;overflow:hidden;display:grid;place-items:center;font-size:38px;font-weight:900}
.profile-avatar img,.avatar img{width:100%;height:100%;object-fit:cover}.profile-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.status-strip{display:flex;gap:14px;overflow:auto;padding:12px 0}.status-bubble{min-width:78px;text-align:center;cursor:pointer}.status-ring{width:66px;height:66px;border-radius:50%;padding:3px;background:linear-gradient(135deg,#22c77d,#0e7d54);margin:auto}.status-ring .inside{width:100%;height:100%;border:3px solid #fff;border-radius:50%;background:#d8ebe4;display:grid;place-items:center;overflow:hidden}.status-ring img{width:100%;height:100%;object-fit:cover}.status-name{font-size:12px;margin-top:6px;max-width:78px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.download-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}.download-card{border:1px solid var(--line);border-radius:18px;padding:20px;background:#fff}.download-card .platform{font-size:30px}.soon{font-size:12px;color:#7d8c87}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field label{display:block;font-weight:800;margin:12px 0 6px}.field input,.field textarea,.field select{width:100%;padding:12px;border:1px solid var(--line);border-radius:12px}.field textarea{min-height:90px;resize:vertical}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.tab{padding:9px 12px;border-radius:999px;background:#edf5f2;font-weight:800;font-size:13px}
@media(max-width:850px){.download-grid{grid-template-columns:1fr 1fr}.form-row{grid-template-columns:1fr}}
@media(max-width:520px){.download-grid{grid-template-columns:1fr}}