:root{
  --bg:#f5f8fd;--surface:#fff;--surface-2:#f7f9fc;--text:#101828;--muted:#667085;
  --line:#e4e9f2;--brand:#1769ff;--brand-2:#0d4bd7;--cyan:#1cc8e8;--navy:#081a4b;
  --danger:#b42318;--success:#087443;--radius:20px;--shadow:0 12px 38px rgba(16,24,40,.08);
  --top:76px;--bottom:72px;--content:1400px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:15px;line-height:1.5}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,textarea,select{font:inherit}.ui-icon{display:inline-block;vertical-align:middle;flex:0 0 auto}.btn,button{min-height:44px;border:0;border-radius:14px;background:var(--brand);color:#fff;font-weight:800;padding:10px 16px;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;transition:.18s ease}.btn:hover,button:hover{background:var(--brand-2);transform:translateY(-1px)}.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--line)}.btn.wide{width:100%}

/* HEADER */
.topbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.topbar-inner{height:var(--top);max-width:var(--content);margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:18px}.brand{display:flex;align-items:center;gap:9px;font-weight:950;font-size:24px;letter-spacing:-.6px;white-space:nowrap}.brand img{width:45px;height:45px;border-radius:13px;object-fit:contain}.brand span{color:#111827}.top-search{position:relative;flex:1;max-width:520px}.top-search input{width:100%;height:48px;border:1px solid #dfe5ee;background:#f8fafc;border-radius:16px;padding:0 16px 0 44px;color:var(--text);outline:none;transition:.18s}.top-search input:focus{background:#fff;border-color:#9ab9ff;box-shadow:0 0 0 4px rgba(23,105,255,.09)}.search-icon{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:#667085}.public-nav{display:flex;align-items:center;gap:6px;margin-left:auto}.public-nav a{height:44px;padding:0 10px;display:flex;align-items:center;gap:7px;border-radius:12px;font-weight:800;font-size:13px;color:#15224a}.public-nav a:hover{background:#f1f5fb;color:var(--brand)}.top-actions{display:flex;align-items:center;gap:9px;margin-left:auto}.public-nav+.top-actions{margin-left:8px}.login-btn{padding-inline:21px}.signup-btn{padding-inline:22px;box-shadow:0 8px 18px rgba(23,105,255,.22)}.mobile-menu-button{display:none;width:44px;height:44px;padding:0;background:#fff;border:1px solid var(--line);border-radius:12px;flex-direction:column;gap:4px}.mobile-menu-button span{width:20px;height:2px;background:#16213f;border-radius:2px}.icon-btn{position:relative;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);display:grid;place-items:center;background:var(--surface);color:var(--text)}.icon-btn b{position:absolute;right:-5px;top:-5px;background:#dc2626;color:#fff;border-radius:20px;font-size:10px;line-height:18px;min-width:18px;text-align:center;padding:0 4px}.profile-chip{display:flex;align-items:center;gap:8px;font-weight:800}.avatar{border-radius:50%;object-fit:cover;flex:0 0 auto}.avatar-fallback{display:inline-grid;place-items:center;background:linear-gradient(135deg,var(--brand),#7957ee);color:#fff;font-weight:900}

/* APP */
.member-body{padding-bottom:0}.app-shell{max-width:1440px;margin:0 auto}.app-shell.guest{max-width:none}.sidebar{display:none}.main-content{width:100%;padding:14px;max-width:760px;margin:0 auto}.public-main{max-width:none;padding:0}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-bottom:12px}.card h1,.card h2,.card h3{margin-top:0}.flash{max-width:1180px;margin:14px auto;border-radius:14px;padding:12px 14px;font-weight:700}.flash.success{background:#ecfdf3;color:var(--success);border:1px solid #abefc6}.flash.error{background:#fef3f2;color:var(--danger);border:1px solid #fecdca}.muted,.meta{color:var(--muted);font-size:13px}.row{display:flex;align-items:center;gap:10px}.between{display:flex;align-items:center;justify-content:space-between;gap:12px}.stack{display:grid;gap:12px}.grid-2{display:grid;gap:12px}.pill{display:inline-flex;align-items:center;gap:5px;border-radius:999px;background:#eef4ff;color:#1d4ed8;padding:5px 9px;font-size:12px;font-weight:700}.count{font-weight:800}.composer textarea,.form textarea{min-height:110px}.form input,.form textarea,.form select,.composer textarea,.composer input,.composer select{width:100%;border:1px solid var(--line);border-radius:14px;background:var(--surface);padding:12px 13px;color:var(--text);outline:none}.form input:focus,.form textarea:focus,.form select:focus,.composer textarea:focus{border-color:#93b4ff;box-shadow:0 0 0 3px rgba(37,99,235,.12)}.form label{display:grid;gap:7px;font-weight:700}.post-head{display:flex;align-items:center;gap:10px}.post-media{margin:12px -16px 0}.post-media img{width:100%;max-height:560px;object-fit:cover}.post-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;border-top:1px solid var(--line);margin-top:12px;padding-top:10px}.post-actions button,.post-actions a{background:transparent;color:var(--muted);border:0;min-height:40px;border-radius:10px;padding:7px;display:flex;align-items:center;justify-content:center;gap:6px;font-weight:700}.post-actions button:hover,.post-actions a:hover{background:var(--surface-2);color:var(--text);transform:none}.list-item{padding:12px 0;border-bottom:1px solid var(--line)}.list-item:last-child{border-bottom:0}.topic-title{font-size:16px;font-weight:800}.category-card{display:flex;gap:12px;align-items:flex-start}.category-icon{font-size:26px;line-height:1}.hero{background:linear-gradient(135deg,#0f172a,#1d4ed8);color:#fff;border:0}.hero .muted{color:#dbeafe}.tabs{display:flex;gap:8px;overflow:auto;padding-bottom:4px}.tabs a{white-space:nowrap;border:1px solid var(--line);background:var(--surface);padding:8px 11px;border-radius:999px;font-weight:700}.empty{text-align:center;padding:32px 16px;color:var(--muted)}

/* LANDING */
.landing-wrap{max-width:var(--content);margin:0 auto;padding:20px 20px 0}.landing-hero{position:relative;overflow:hidden;min-height:350px;border-radius:25px;background:linear-gradient(118deg,#1239bb 0%,#0759e7 52%,#1130c7 100%);color:#fff;padding:44px 48px;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(430px,.88fr);align-items:center;box-shadow:0 18px 48px rgba(18,57,187,.2)}.hero-copy{position:relative;z-index:3;max-width:760px}.eyebrow{font-size:12px;letter-spacing:2.2px;font-weight:800;color:#bcd5ff}.landing-hero h1{font-size:clamp(36px,4vw,59px);line-height:1.02;letter-spacing:-2.3px;margin:13px 0 16px;font-weight:950;max-width:800px}.landing-hero h1 span{display:block}.landing-hero p{font-size:18px;max-width:720px;color:#e1eaff;margin:0}.hero-actions{display:flex;gap:12px;margin-top:26px}.hero-actions a{min-height:50px;border-radius:14px;padding:0 23px;font-weight:900;display:inline-flex;align-items:center;justify-content:center;gap:10px}.hero-primary{background:#fff;color:#0d57e6;box-shadow:0 10px 30px rgba(5,21,76,.18)}.hero-secondary{border:1px solid rgba(255,255,255,.7);color:#fff}.hero-benefits{display:flex;flex-wrap:wrap;gap:22px;margin-top:22px;font-size:13px;color:#e6efff}.hero-benefits span{display:flex;align-items:center;gap:7px}.hero-benefits .ui-icon{border-radius:50%;background:#fff;color:#0d65ed;padding:2px}.hero-visual{position:relative;z-index:2;min-height:270px}.hero-orb{position:absolute;border-radius:50%;background:linear-gradient(145deg,rgba(41,210,238,.92),rgba(16,111,255,.25));filter:saturate(110%)}.hero-orb-a{width:430px;height:430px;right:-170px;top:-215px}.hero-orb-b{width:350px;height:190px;right:170px;bottom:-115px;transform:rotate(-18deg);border-radius:50%}.visual-logo-card{position:absolute;left:80px;top:20px;width:142px;height:142px;border-radius:24px;background:rgba(255,255,255,.93);box-shadow:0 18px 36px rgba(6,30,108,.28);display:grid;place-items:center;transform:rotate(-4deg)}.visual-logo-card img{width:88px;height:88px;object-fit:contain}.visual-bubble{position:absolute;background:rgba(255,255,255,.2);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2);border-radius:18px;display:flex;align-items:center;justify-content:center}.bubble-one{left:0;top:78px;width:112px;height:58px;gap:4px}.bubble-one i{width:6px;height:6px;border-radius:50%;background:#fff}.bubble-two{left:225px;top:78px;width:92px;height:82px;background:#fff;color:#1769ff}.visual-panel{position:absolute;left:150px;top:156px;width:228px;padding:13px 16px;border-radius:18px;background:rgba(255,255,255,.95);color:#133178;box-shadow:0 17px 32px rgba(6,30,108,.24)}.visual-panel div{display:flex;align-items:center;gap:10px;padding:6px 0}.mini-avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:11px;font-weight:900}.mini-a{background:#1b74ff}.mini-b{background:#7d52e8}.mini-c{background:#18b7a4}.hero-shortcuts{position:absolute;right:-10px;top:15px;display:grid;gap:4px}.hero-shortcuts a{display:flex;align-items:center;gap:9px;padding:7px 10px;border-radius:10px;color:#fff;font-size:13px;font-weight:700}.hero-shortcuts a:hover{background:rgba(255,255,255,.12)}
.home-dashboard-grid{display:grid;grid-template-columns:1fr 1.05fr 1.05fr 1.02fr;gap:14px;margin-top:16px}.landing-card{min-width:0;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:0 8px 28px rgba(16,24,40,.055);padding:18px}.section-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}.section-title h2{font-size:16px;margin:0;display:flex;align-items:center;gap:8px}.section-title h2 .ui-icon{color:var(--brand)}.section-title a{font-size:11px;color:var(--brand);font-weight:800;display:flex;align-items:center;gap:4px;white-space:nowrap}.trend-list,.compact-list{display:grid}.trend-row,.compact-row,.topic-compact-row{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid #eef1f5}.trend-row:last-child,.compact-row:last-child,.topic-compact-row:last-child{border-bottom:0}.trend-rank{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#eaf1ff;color:#1769ff;font-size:12px;font-weight:900}.trend-row:nth-child(2) .trend-rank{background:#eee9ff;color:#7650e6}.trend-row:nth-child(3) .trend-rank{background:#dbf8fc;color:#08a5c0}.trend-row>span:last-child{min-width:0;display:grid}.trend-row strong,.compact-row strong,.topic-compact-row strong{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.trend-row small,.compact-row small,.topic-compact-row small{font-size:11px;color:#8490a6}.community-mini,.topic-avatar{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;flex:0 0 auto;background:linear-gradient(145deg,#0e4dd4,#20c7e6);color:#fff;font-weight:900}.topic-avatar{border-radius:50%;background:linear-gradient(145deg,#ff8a3d,#7650e6)}.compact-main{display:grid;min-width:0;flex:1}.mini-action{font-size:10px;border:1px solid #cbdaf7;border-radius:999px;padding:5px 9px;color:#1769ff;font-weight:800}.landing-empty,.landing-empty-action{color:var(--muted);font-size:13px}.landing-empty-action a{color:var(--brand);font-weight:800}.featured-author{display:flex;align-items:center;gap:9px}.featured-author>span{display:grid}.featured-author small{color:var(--muted);font-size:11px}.featured-text{font-size:13px;line-height:1.45}.featured-media{width:100%;height:132px;object-fit:cover;border-radius:12px;margin-top:8px}.featured-stats{display:flex;gap:18px;color:#61708b;font-size:12px;margin-top:10px}.featured-stats span{display:flex;align-items:center;gap:5px}.featured-placeholder{text-align:center;padding:18px 4px}.placeholder-icon{width:58px;height:58px;border-radius:18px;margin:0 auto 12px;display:grid;place-items:center;background:#eaf1ff;color:#1769ff}.featured-placeholder p{font-size:12px;color:var(--muted)}.home-stats{display:flex;justify-content:center;gap:80px;margin:22px auto 0;padding:16px;color:#22325b}.home-stats div{display:grid;text-align:center}.home-stats strong{font-size:24px;color:#1769ff}.home-stats span{font-size:12px;color:var(--muted)}.join-banner{margin:0 0 20px;background:linear-gradient(100deg,#eaf3ff,#f5f9ff);border:1px solid #dce9fb;border-radius:20px;min-height:96px;padding:18px 28px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px}.join-icon{width:60px;height:60px;border-radius:18px;display:grid;place-items:center;background:#fff;color:#1769ff;box-shadow:0 8px 20px rgba(23,105,255,.1)}.join-banner h2{margin:0 0 3px;font-size:19px}.join-banner p{margin:0;color:#71809a;font-size:13px}.join-banner>a{display:flex;align-items:center;gap:8px;background:linear-gradient(135deg,#2177ff,#1658ed);color:#fff;border-radius:14px;padding:14px 22px;font-weight:900;white-space:nowrap;box-shadow:0 8px 20px rgba(23,105,255,.2)}

/* FOOTER */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:8px}.site-footer-inner{max-width:var(--content);margin:0 auto;padding:34px 20px 26px;display:grid;grid-template-columns:1.6fr .8fr .9fr .8fr 1.15fr;gap:34px}.footer-logo{font-size:22px}.footer-logo img{width:40px;height:40px}.footer-brand p,.footer-newsletter p{font-size:12px;color:#7b879b;max-width:300px}.footer-column{display:grid;align-content:start;gap:6px}.footer-column h3{font-size:13px;margin:5px 0 7px}.footer-column a{font-size:12px;color:#667085}.footer-column a:hover{color:var(--brand)}.footer-newsletter{background:#f7faff;border:1px solid #e3ebf7;border-radius:16px;padding:14px;align-self:start}.newsletter-title{display:flex;align-items:center;gap:8px;font-size:13px}.newsletter-title .ui-icon{color:var(--brand)}.footer-newsletter form{position:relative}.footer-newsletter input{width:100%;height:40px;border:1px solid #dfe7f2;border-radius:12px;padding:0 45px 0 12px;background:#fff;outline:none}.footer-newsletter button{position:absolute;right:4px;top:4px;width:32px;height:32px;min-height:32px;border-radius:10px;padding:0}.footer-bottom{max-width:var(--content);margin:0 auto;padding:13px 20px 18px;border-top:1px solid #eef1f5;color:#8190a6;font-size:11px;display:flex;justify-content:space-between;gap:20px}

/* EXISTING MODULES */
.bottom-nav{position:fixed;z-index:110;bottom:0;left:0;right:0;height:calc(var(--bottom) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:rgba(255,255,255,.98);backdrop-filter:blur(14px);border-top:1px solid var(--line)}.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--muted);font-weight:700}.bottom-nav .ui-icon{width:21px;height:21px}.bottom-nav small{font-size:10px}.bottom-nav .create-fab>span{width:46px;height:46px;border-radius:16px;background:var(--brand);color:#fff;display:grid;place-items:center;margin-top:-22px;box-shadow:0 8px 22px rgba(37,99,235,.35)}.create-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.create-tile{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px;min-height:120px;display:flex;flex-direction:column;justify-content:space-between;font-weight:800}.create-tile span{font-size:28px}.message-layout{display:grid;gap:12px}.conversation-list{max-height:68vh;overflow:auto}.messages-box{height:55vh;overflow:auto;display:flex;flex-direction:column;gap:8px;padding:10px;background:var(--surface-2);border-radius:14px}.bubble{max-width:82%;padding:10px 12px;border-radius:16px;background:#fff;border:1px solid var(--line)}.bubble.mine{align-self:flex-end;background:#dbeafe;border-color:#bfdbfe}.sticky-compose{position:sticky;bottom:calc(var(--bottom) + 8px);background:var(--surface);padding-top:8px}.product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.product-card{overflow:hidden;padding:0}.product-card img{aspect-ratio:1/1;object-fit:cover;width:100%}.product-card .pad{padding:12px}.price{font-size:18px;font-weight:900}.right-rail{display:none}.desktop-only{display:none}

/* TABLET */
@media (max-width:1180px){
  .public-nav a span{display:none}.public-nav a{width:42px;justify-content:center}.landing-hero{grid-template-columns:1fr 390px;padding:38px}.landing-hero h1{font-size:46px}.hero-shortcuts{display:none}.home-dashboard-grid{grid-template-columns:repeat(2,1fr)}.site-footer-inner{grid-template-columns:1.4fr repeat(3,.8fr)}.footer-newsletter{grid-column:1/-1;max-width:600px;width:100%}
}
@media (min-width:720px){
  .member-body{padding-bottom:0}.member-topbar .top-search{display:block}.member-topbar .profile-chip{display:flex}.bottom-nav{display:none}.member-body .app-shell{display:grid;grid-template-columns:88px minmax(0,1fr);gap:18px;padding:18px}.sidebar{display:flex;position:sticky;top:94px;height:calc(100vh - 112px);flex-direction:column;gap:14px}.sidebar nav{display:grid;gap:6px}.sidebar nav a{display:flex;align-items:center;justify-content:center;gap:10px;min-height:48px;border-radius:14px;color:var(--muted);font-weight:800}.sidebar nav a span{display:none}.sidebar nav a:hover{background:var(--surface);color:var(--text)}.member-body .main-content{padding:0;margin:0 auto;max-width:820px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.create-grid{grid-template-columns:repeat(3,1fr)}.sticky-compose{bottom:8px}.message-layout{grid-template-columns:280px minmax(0,1fr)}.messages-box{height:62vh}.product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:1024px){
  .member-body .app-shell{grid-template-columns:240px minmax(0,760px) minmax(240px,320px);justify-content:center}.sidebar nav a{justify-content:flex-start;padding:0 14px}.sidebar nav a span{display:inline}.right-rail{display:block;position:sticky;top:94px;height:max-content}.desktop-only{display:block}.product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}

/* MOBILE */
@media (max-width:719px){
  :root{--top:66px}.guest-body{background:#f6f8fc}.member-body{padding-bottom:calc(var(--bottom) + env(safe-area-inset-bottom))}.topbar-inner{padding:0 14px;gap:10px}.brand{font-size:20px}.brand img{width:39px;height:39px}.top-search{display:none}.public-topbar .top-actions{margin-left:auto}.public-topbar .login-btn{display:none}.public-topbar .signup-btn{min-height:40px;padding:0 13px;font-size:13px}.mobile-menu-button{display:flex;margin-left:auto}.public-nav{display:none;position:absolute;left:12px;right:12px;top:calc(var(--top) + 7px);background:#fff;border:1px solid var(--line);border-radius:18px;padding:8px;box-shadow:0 16px 40px rgba(15,23,42,.14)}.public-nav.is-open{display:grid}.public-nav a{width:100%;height:48px;justify-content:flex-start;padding:0 13px}.public-nav a span{display:inline}.public-nav+.top-actions{margin-left:0}.landing-wrap{padding:12px 12px 0}.landing-hero{display:block;min-height:auto;padding:28px 22px 26px;border-radius:22px}.landing-hero h1{font-size:35px;line-height:1.06;letter-spacing:-1.5px}.landing-hero p{font-size:15px}.hero-actions{display:grid;grid-template-columns:1fr;margin-top:22px}.hero-actions a{width:100%}.hero-benefits{display:grid;gap:8px}.hero-visual{display:none}.home-dashboard-grid{grid-template-columns:1fr;gap:10px;margin-top:12px}.landing-card{border-radius:18px;padding:16px}.home-stats{gap:34px;margin-top:12px;padding:14px 0}.home-stats strong{font-size:20px}.join-banner{grid-template-columns:auto 1fr;margin-top:0;padding:18px;border-radius:18px}.join-banner>a{grid-column:1/-1;justify-content:center}.join-banner h2{font-size:17px}.site-footer-inner{grid-template-columns:1fr 1fr;gap:24px;padding:28px 16px}.footer-brand,.footer-newsletter{grid-column:1/-1}.footer-column:nth-of-type(3){display:none}.footer-bottom{padding-inline:16px;display:grid}.featured-media{height:180px}.section-title h2{font-size:15px}
}
@media (max-width:420px){.site-footer-inner{grid-template-columns:1fr}.footer-column{grid-column:auto}.home-stats{gap:22px}.topbar .brand span{display:none}.public-topbar .signup-btn{padding:0 11px}}
@media (min-width:1280px){.member-body .app-shell{grid-template-columns:260px minmax(0,800px) 320px}.member-body .main-content{max-width:800px}}