*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0613;--surface:#150d24;--accent:#a855f7;--accent-2:#ec4899;--accent-3:#22d3ee;--text:#e5e7eb;--text-dim:#9ca3af;--text-soft:#cbd5e1;--border:rgba(168,85,247,.2);--border-soft:rgba(255,255,255,.08);--cyan-border:rgba(34,211,238,.25)}
html,body{background:var(--bg);color:var(--text);font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;min-height:100vh;overflow-x:hidden;scroll-behavior:smooth;-webkit-font-smoothing:antialiased}
body::before{content:'';position:fixed;inset:0;background:radial-gradient(ellipse 70% 50% at 15% 0%,rgba(168,85,247,.16),transparent 55%),radial-gradient(ellipse 60% 45% at 90% 100%,rgba(236,72,153,.1),transparent 55%);pointer-events:none;z-index:0}
a{color:inherit;text-decoration:none}
header{display:flex;justify-content:space-between;align-items:center;padding:18px 48px;border-bottom:1px solid var(--border-soft);backdrop-filter:blur(14px);background:rgba(10,6,19,.72);position:sticky;top:0;z-index:100}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--accent),var(--accent-2));display:flex;align-items:center;justify-content:center;font-weight:900;font-size:18px;color:#fff;box-shadow:0 0 24px rgba(168,85,247,.5)}
.logo-text{font-weight:800;font-size:17px;letter-spacing:.01em}
.nav{display:flex;gap:4px;align-items:center}
.nav a{padding:9px 16px;border-radius:9px;font-size:14px;font-weight:600;color:var(--text-dim);transition:all .2s}
.nav a:hover{color:var(--text);background:rgba(168,85,247,.08)}
.nav a.active{color:var(--text);background:rgba(168,85,247,.12)}
.nav a.voice{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 0 18px rgba(168,85,247,.4);margin-left:8px}
.nav a.voice:hover{transform:translateY(-1px);box-shadow:0 4px 22px rgba(168,85,247,.55);background:linear-gradient(135deg,var(--accent),var(--accent-2))}
.wrap{position:relative;z-index:5;max-width:1180px;margin:0 auto;padding:0 48px}
section{padding:72px 0}
.hero{padding:84px 0 48px;text-align:center;position:relative;z-index:5}
.hero-badge{display:inline-block;padding:7px 16px;border-radius:100px;background:rgba(168,85,247,.1);border:1px solid var(--border);color:#c4b5fd;font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;margin-bottom:26px}
.hero h1{font-size:clamp(44px,7vw,88px);font-weight:900;line-height:1;letter-spacing:-.03em;margin-bottom:22px;background:linear-gradient(135deg,#fff 0%,#c4b5fd 55%,#f9a8d4 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:19px;color:var(--text-soft);max-width:720px;margin:0 auto;line-height:1.6}
.page-hero{padding:72px 0 40px;position:relative;z-index:5}
.breadcrumb{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim);margin-bottom:24px;font-weight:500}
.breadcrumb a:hover{color:var(--text)}
.breadcrumb .sep{opacity:.5}
.page-hero h1{font-size:clamp(38px,5.5vw,64px);font-weight:900;line-height:1.05;letter-spacing:-.025em;margin-bottom:20px;background:linear-gradient(135deg,#fff 0%,#c4b5fd 70%,#f9a8d4 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{font-size:18px;color:var(--text-soft);max-width:720px;line-height:1.6}
.modes{display:grid;grid-template-columns:1fr 1fr;gap:24px;position:relative;z-index:5}
.mode-card{display:flex;flex-direction:column;padding:44px;border-radius:26px;background:linear-gradient(180deg,rgba(29,18,48,.85),rgba(21,13,36,.85));border:1px solid var(--border);backdrop-filter:blur(12px);position:relative;overflow:hidden;transition:all .3s;color:inherit}
.mode-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(168,85,247,.55),transparent)}
.mode-card:hover{border-color:rgba(168,85,247,.5);transform:translateY(-5px);box-shadow:0 28px 56px rgba(0,0,0,.4)}
.mode-card.cyan::before{background:linear-gradient(90deg,transparent,rgba(34,211,238,.55),transparent)}
.mode-card.cyan:hover{border-color:rgba(34,211,238,.5)}
.mode-icon{width:60px;height:60px;border-radius:18px;background:rgba(168,85,247,.14);display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:24px}
.mode-card.cyan .mode-icon{background:rgba(34,211,238,.14)}
.mode-tag{display:inline-block;padding:5px 12px;border-radius:100px;background:rgba(168,85,247,.14);color:#c4b5fd;font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:18px;align-self:flex-start}
.mode-card.cyan .mode-tag{background:rgba(34,211,238,.14);color:#67e8f9}
.mode-card h3{font-size:30px;font-weight:800;margin-bottom:14px;letter-spacing:-.02em}
.mode-card > p{font-size:15px;color:var(--text-dim);line-height:1.65;margin-bottom:26px;flex:1}
.mode-cta{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:700;color:#c4b5fd}
.mode-card.cyan .mode-cta{color:#67e8f9}
.mode-cta::after{content:'→';transition:transform .2s}
.mode-card:hover .mode-cta::after{transform:translateX(4px)}
.section-label{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#c4b5fd;margin-bottom:14px}
.section-title{font-size:clamp(26px,3.6vw,40px);font-weight:800;letter-spacing:-.02em;line-height:1.15;margin-bottom:20px}
.section-text{font-size:16px;color:var(--text-soft);line-height:1.75;max-width:820px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:48px}
.step{padding:28px 24px;border-radius:18px;background:rgba(29,18,48,.5);border:1px solid var(--border-soft);transition:all .3s}
.step:hover{border-color:var(--border);background:rgba(29,18,48,.75)}
.step-num{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.1em;margin-bottom:14px}
.step h4{font-size:16px;font-weight:700;margin-bottom:10px}
.step p{font-size:14px;color:var(--text-dim);line-height:1.6}
.features{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:44px}
.feature{padding:24px;border-radius:16px;background:rgba(29,18,48,.5);border:1px solid var(--border-soft);display:flex;gap:16px}
.feature-icon{width:40px;height:40px;flex-shrink:0;border-radius:12px;background:rgba(168,85,247,.14);display:flex;align-items:center;justify-content:center;font-size:18px}
.feature h4{font-size:15px;font-weight:700;margin-bottom:6px}
.feature p{font-size:14px;color:var(--text-dim);line-height:1.6}

/* ROLE PICKER */
.role-section{margin-top:0}
.role-filters{display:flex;flex-wrap:wrap;gap:10px;margin:36px 0 32px}
.filter-chip{padding:9px 18px;border-radius:100px;background:rgba(29,18,48,.6);border:1px solid var(--border-soft);color:var(--text-dim);font-size:13px;font-weight:600;cursor:pointer;transition:all .2s;font-family:inherit}
.filter-chip:hover{border-color:var(--border);color:var(--text)}
.filter-chip.active{background:rgba(168,85,247,.15);border-color:var(--accent);color:#c4b5fd}
.role-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.role-card{padding:28px;border-radius:20px;background:rgba(29,18,48,.55);border:1px solid var(--border-soft);cursor:pointer;transition:all .25s;position:relative;display:flex;flex-direction:column}
.role-card:hover{border-color:rgba(168,85,247,.45);background:rgba(29,18,48,.85);transform:translateY(-3px);box-shadow:0 16px 32px rgba(0,0,0,.3)}
.role-card.selected{border-color:var(--accent);background:rgba(168,85,247,.12);box-shadow:0 0 0 1px var(--accent),0 16px 32px rgba(168,85,247,.15)}
.role-card .role-check{position:absolute;top:20px;right:20px;width:24px;height:24px;border-radius:50%;border:2px solid var(--border-soft);display:flex;align-items:center;justify-content:center;font-size:13px;color:transparent;transition:all .2s}
.role-card.selected .role-check{background:var(--accent);border-color:var(--accent);color:#fff}
.role-cat{display:inline-block;padding:4px 10px;border-radius:100px;background:rgba(168,85,247,.12);color:#c4b5fd;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:14px;align-self:flex-start}
.role-card h4{font-size:18px;font-weight:700;margin-bottom:10px;letter-spacing:-.01em}
.role-card p{font-size:14px;color:var(--text-dim);line-height:1.6;flex:1;margin-bottom:16px}
.role-goal{font-size:12px;color:var(--text-dim);padding-top:14px;border-top:1px solid var(--border-soft);display:flex;align-items:center;gap:6px}
.role-goal::before{content:'🎯';font-size:13px}
.role-goal strong{color:#c4b5fd;font-weight:600}
.role-selected-info{margin-top:24px;padding:20px 24px;border-radius:14px;background:rgba(168,85,247,.1);border:1px solid var(--border);display:none;align-items:center;gap:14px;font-size:14px;color:var(--text-soft)}
.role-selected-info.show{display:flex}
.role-selected-info .label{font-weight:600;color:#c4b5fd}
.role-selected-info .value{font-weight:700;color:var(--text)}
.empty-hint{padding:40px;text-align:center;color:var(--text-dim);font-size:14px}

/* AUTH (login card) */
.auth-card{padding:48px;border-radius:26px;background:linear-gradient(180deg,rgba(29,18,48,.92),rgba(21,13,36,.92));border:1px solid var(--cyan-border);position:relative;overflow:hidden;max-width:560px;margin:0 auto}
.auth-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.6),transparent)}
.auth-card h2{font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:-.02em;margin-bottom:12px;text-align:center}
.auth-card > p{text-align:center;color:var(--text-dim);font-size:15px;line-height:1.6;margin-bottom:32px}
.auth-tabs{display:flex;gap:4px;background:rgba(10,6,19,.5);padding:4px;border-radius:12px;margin-bottom:28px}
.auth-tab{flex:1;padding:11px;border-radius:9px;background:none;border:none;color:var(--text-dim);font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;transition:all .2s}
.auth-tab.active{background:rgba(34,211,238,.15);color:#67e8f9}
.auth-pane{display:none}
.auth-pane.active{display:block}
.auth-field{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.auth-field label{font-size:13px;font-weight:600;color:var(--text-soft)}
.auth-field label .opt{color:var(--text-dim);font-weight:400;font-size:12px}
.auth-field input{background:rgba(10,6,19,.6);border:1px solid var(--border-soft);border-radius:11px;padding:14px 16px;font-size:15px;color:var(--text);font-family:inherit;transition:all .2s;outline:none}
.auth-field input:focus{border-color:var(--accent-3);background:rgba(10,6,19,.85);box-shadow:0 0 0 3px rgba(34,211,238,.15)}
.auth-field input::placeholder{color:var(--text-dim);opacity:.5}
.auth-hint{font-size:13px;color:var(--text-dim);margin-top:8px;text-align:center;line-height:1.6}
.auth-hint code{background:rgba(34,211,238,.12);color:#67e8f9;padding:2px 8px;border-radius:6px;font-family:'SF Mono',Consolas,monospace;font-size:12px;font-weight:600}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:15px 32px;border-radius:12px;font-size:15px;font-weight:700;font-family:inherit;cursor:pointer;transition:all .2s;border:none}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;box-shadow:0 8px 24px rgba(168,85,247,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(168,85,247,.5)}
.btn-cyan{background:linear-gradient(135deg,var(--accent-3),#3b82f6);color:#fff;box-shadow:0 8px 24px rgba(34,211,238,.3)}
.btn-cyan:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(34,211,238,.5)}
.btn-block{width:100%}

/* CHAT PREVIEW */
.chat-preview{padding:48px;border-radius:26px;background:linear-gradient(180deg,rgba(29,18,48,.9),rgba(21,13,36,.9));border:1px solid var(--cyan-border);position:relative;overflow:hidden;margin-top:24px}
.chat-preview::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(34,211,238,.6),transparent)}
.chat-head{display:flex;align-items:center;gap:14px;padding-bottom:24px;border-bottom:1px solid var(--border-soft);margin-bottom:28px}
.chat-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--accent-3),var(--accent));display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:0 0 20px rgba(34,211,238,.4);flex-shrink:0}
.chat-head-info h4{font-size:16px;font-weight:700;margin-bottom:4px}
.chat-head-info p{font-size:13px;color:var(--text-dim);display:flex;align-items:center;gap:6px}
.chat-head-info .dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 8px rgba(34,197,94,.8);display:inline-block}
.chat-body{display:flex;flex-direction:column;gap:16px;margin-bottom:28px}
.bubble{max-width:75%;padding:16px 20px;border-radius:18px;font-size:15px;line-height:1.55;position:relative}
.bubble.ai{background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.25);border-bottom-left-radius:6px;align-self:flex-start;color:#e0f2fe}
.bubble.user{background:rgba(168,85,247,.15);border:1px solid rgba(168,85,247,.3);border-bottom-right-radius:6px;align-self:flex-end;color:#f3e8ff}
.bubble .who{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:6px;opacity:.85}
.bubble.ai .who{color:#67e8f9}
.bubble.user .who{color:#c4b5fd}
.chat-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;padding-top:24px;border-top:1px solid var(--border-soft)}
.chat-pulse{display:inline-flex;gap:5px;align-items:center;height:20px;padding:0 4px}
.chat-pulse span{width:7px;height:7px;border-radius:50%;background:#67e8f9;opacity:.4;animation:pulse 1.2s infinite}
.chat-pulse span:nth-child(2){animation-delay:.2s}
.chat-pulse span:nth-child(3){animation-delay:.4s}
@keyframes pulse{0%,60%,100%{opacity:.4;transform:scale(1)}30%{opacity:1;transform:scale(1.3)}}

/* FORM */
.form-card{margin-top:0;padding:48px;border-radius:26px;background:linear-gradient(180deg,rgba(29,18,48,.85),rgba(21,13,36,.85));border:1px solid var(--border);position:relative;overflow:hidden}
.form-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(168,85,247,.55),transparent)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px}
.form-field{display:flex;flex-direction:column;gap:8px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:13px;font-weight:600;color:var(--text-soft)}
.form-field label .opt{color:var(--text-dim);font-weight:400;font-size:12px}
.form-field input{background:rgba(10,6,19,.6);border:1px solid var(--border-soft);border-radius:11px;padding:14px 16px;font-size:15px;color:var(--text);font-family:inherit;transition:all .2s;outline:none}
.form-field input:focus{border-color:var(--accent);background:rgba(10,6,19,.85);box-shadow:0 0 0 3px rgba(168,85,247,.15)}
.form-field input::placeholder{color:var(--text-dim);opacity:.6}
.form-note{font-size:13px;color:var(--text-dim);margin-top:16px;line-height:1.6}

/* MODAL */
.modal-overlay{position:fixed;inset:0;background:rgba(10,6,19,.85);backdrop-filter:blur(10px);display:none;align-items:center;justify-content:center;z-index:200;padding:20px}
.modal-overlay.open{display:flex}
.modal{background:linear-gradient(180deg,#1d1230,#150d24);border:1px solid var(--border);border-radius:24px;padding:40px;max-width:460px;width:100%;text-align:center;position:relative;animation:modalIn .25s ease-out}
@keyframes modalIn{from{opacity:0;transform:scale(.95) translateY(12px)}to{opacity:1;transform:scale(1) translateY(0)}}
.modal-close{position:absolute;top:16px;right:16px;background:none;border:none;color:var(--text-dim);font-size:22px;cursor:pointer;width:34px;height:34px;border-radius:9px;display:flex;align-items:center;justify-content:center;transition:all .2s;font-family:inherit;line-height:1}
.modal-close:hover{background:rgba(168,85,247,.15);color:var(--text)}
.modal-icon{width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,var(--accent-3),#3b82f6);display:flex;align-items:center;justify-content:center;font-size:30px;margin:0 auto 22px;box-shadow:0 8px 24px rgba(34,211,238,.4)}
.modal h3{font-size:22px;font-weight:800;margin-bottom:12px;letter-spacing:-.01em}
.modal p{color:var(--text-dim);font-size:15px;line-height:1.65;margin-bottom:26px}
.modal a{color:#c4b5fd;font-weight:700}
.modal a:hover{text-decoration:underline}
footer{position:relative;z-index:5;border-top:1px solid var(--border-soft);padding:32px 48px;text-align:center;color:var(--text-dim);font-size:14px}
footer a{color:#c4b5fd;font-weight:600}
footer a:hover{text-decoration:underline}
@media (max-width:900px){header{padding:16px 24px}.wrap{padding:0 24px}.modes,.features,.form-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.nav a{padding:8px 12px;font-size:13px}.logo-text{font-size:15px}section{padding:56px 0}.hero{padding:60px 0 32px}.page-hero{padding:48px 0 24px}.form-card,.auth-card,.chat-preview{padding:32px 24px}footer{padding:24px}.role-grid{grid-template-columns:1fr}.bubble{max-width:88%}}
@media (max-width:560px){.steps{grid-template-columns:1fr}.nav{gap:2px}.nav a{padding:7px 10px;font-size:12px}.nav a.voice{margin-left:4px}.filter-chip{padding:8px 14px;font-size:12px}}