:root {
  --bg: #FFFFFF; --surface: #FFFFFF; --border: #E8ECF0; --border-hover: #CFD5DE;
  --text: #0F172A; --t2: #475569; --t3: #94A3B8;
  --accent: #6366F1; --accent-l: #EEF2FF; --accent-d: #4F46E5;
  --cyan: #0891B2; --cyan-l: #ECFEFF; --teal: #0D9488; --teal-l: #F0FDFA;
  --amber: #D97706; --amber-l: #FFF7ED; --green: #059669; --green-l: #ECFDF5;
  --violet: #7C3AED; --violet-l: #F5F3FF;
  --grad-hero: linear-gradient(160deg, #F5F3FF 0%, #EEF2FF 30%, #FAFBFC 60%, #F8F6FF 100%);
  --shadow-sm: 0 1px 2px rgba(0,0,0,.03); --shadow-md: 0 4px 20px rgba(0,0,0,.04);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.05); --shadow-xl: 0 24px 72px rgba(0,0,0,.07);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono: 'JetBrains Mono', monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font);font-size:1rem;line-height:1.65;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
ul{list-style:none}a{color:var(--accent);text-decoration:none;transition:color .2s}a:hover{color:var(--accent-d)}
.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}

@keyframes fadeUp{from{opacity:0;transform:translateY(36px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes pulse-ring{0%,100%{box-shadow:0 0 0 0 rgba(99,102,241,.15)}50%{box-shadow:0 0 0 16px rgba(99,102,241,0)}}
@keyframes dash-flow{to{stroke-dashoffset:-120}}
@keyframes blink-cursor{0%,100%{opacity:1}50%{opacity:0}}
.reveal{animation:fadeUp .85s var(--ease-out) both}
.r1{animation-delay:.05s}.r2{animation-delay:.1s}.r3{animation-delay:.15s}
.r4{animation-delay:.2s}.r5{animation-delay:.25s}.r6{animation-delay:.3s}
@media(prefers-reduced-motion:reduce){.reveal{animation:none;opacity:1;transform:none}}

/* ══════ HERO ══════ */
.hero::before,.hero::after{display:none}
.hero{position:relative;padding:6rem 0 5rem;overflow:visible;background-color:transparent;border-bottom:1px solid var(--border)}
.hero .container{display:flex;align-items:flex-start;gap:3rem;position:relative;z-index:1}
.hero__inner{flex:1;max-width:700px}
.hero__bg{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.hero__bg::after{content:'';position:absolute;bottom:10%;right:-5%;width:500px;height:500px;background:radial-gradient(circle,rgba(99,102,241,.05) 0%,transparent 50%);pointer-events:none}
.hero__bg .hero__grid{position:absolute;inset:0;opacity:.08;background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:72px 72px;mask-image:radial-gradient(circle at 50% 50%,black 30%,transparent 70%)}
.hero__inner{position:relative;z-index:1;max-width:720px}
.hero__chip{display:inline-flex;align-items:center;gap:.5rem;padding:5px 16px;background:var(--accent-l);border:1px solid rgba(99,102,241,.15);border-radius:100px;font-family:var(--mono);font-size:.625rem;font-weight:600;color:var(--accent);letter-spacing:.08em;margin-bottom:1.5rem}
.hero__chip-dot{width:7px;height:7px;background:var(--accent);border-radius:50%;animation:pulse-ring 2s infinite}
.hero__title{font-size:2.75rem;font-weight:900;line-height:1.08;letter-spacing:-1px;margin-bottom:1.25rem;color:var(--text)}
.hero__title em{font-style:normal;background:linear-gradient(135deg,var(--accent),var(--violet));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero__desc{font-size:1.0625rem;color:var(--t2);line-height:1.75;max-width:520px;margin-bottom:2rem}
.hero__actions{display:flex;gap:.75rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:12px 28px;font-size:.875rem;font-weight:600;font-family:var(--font);border-radius:100px;cursor:pointer;transition:all .35s var(--ease-out);line-height:1.4;border:1.5px solid transparent}
.btn--primary{background:var(--accent);color:#FFFFFF;box-shadow:0 4px 12px rgba(99,102,241,.2)}
.btn--primary:hover{background:#F5F3FF;color:var(--accent);transform:translateY(-1px);box-shadow:0 8px 24px rgba(99,102,241,.25)}
.btn--outline{background:transparent;color:var(--accent);border-color:var(--border-hover)}
.btn--outline:hover{background:var(--accent-l);border-color:var(--accent)}

/* ══════ CHAT DEMO ══════ */
.chat-demo{flex-shrink:0;width:380px;margin-top:0}
.chat-window{background:var(--surface);border-radius:20px;border:1px solid var(--border);box-shadow:var(--shadow-xl);overflow:hidden}
.chat-window__head{padding:1rem 1.25rem;background:#FAFBFC;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:.625rem}
.chat-window__dot{width:8px;height:8px;border-radius:50%}
.chat-window__dot--r{background:#EF4444}
.chat-window__dot--y{background:#F59E0B}
.chat-window__dot--g{background:#10B981}
.chat-window__title{font-size:.75rem;font-weight:600;color:var(--t3);flex:1}
.chat-window__body{padding:1.25rem;max-height:340px;overflow:hidden}
.chat-msg{display:flex;gap:.625rem;margin-bottom:1rem}
.chat-msg--user{flex-direction:row-reverse}
.chat-msg__avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.875rem;flex-shrink:0}
.chat-msg__avatar--ai{background:var(--accent-l);color:var(--accent)}
.chat-msg__avatar--user{background:var(--teal-l);color:var(--teal)}
.chat-msg__bubble{padding:.625rem 1rem;border-radius:16px;font-size:.75rem;line-height:1.6;max-width:240px}
.chat-msg--ai .chat-msg__bubble{background:#F8F9FB;color:var(--t2)}
.chat-msg--user .chat-msg__bubble{background:var(--accent-l);color:var(--accent-d)}
.chat-msg__ref{font-family:var(--mono);font-size:.5625rem;color:var(--t3);margin-top:.375rem;padding-left:.25rem}
.chat-msg__cursor{display:inline-block;width:8px;height:14px;background:var(--accent);margin-left:2px;vertical-align:text-bottom;animation:blink-cursor 1s infinite}

/* ══════ SECTIONS ══════ */
.section{padding:5rem 0}
.section--surf{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section__hd{margin-bottom:3.5rem;text-align:center}
.section__label{display:inline-block;font-family:var(--mono);font-size:.625rem;font-weight:600;color:var(--accent);letter-spacing:.12em;margin-bottom:.75rem;padding:4px 12px;background:var(--accent-l);border-radius:6px}
.section__title{font-size:2rem;font-weight:900;color:var(--text);letter-spacing:-.5px;margin-bottom:.75rem;line-height:1.15}
.section__sub{font-size:.9375rem;color:var(--t2);max-width:560px;margin:0 auto;line-height:1.7}

/* ══════ GRID ══════ */
.grid{display:grid;gap:1.5rem}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}

/* ══════ FEATURE CARD ══════ */
.fc{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:2rem;transition:all .4s var(--ease-out);position:relative;overflow:hidden}
.fc:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--border-hover)}
.fc::after{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),var(--violet));transform:scaleX(0);transition:transform .4s var(--ease-out)}
.fc:hover::after{transform:scaleX(1)}
.fc__icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:1rem}
.fc__icon--v{background:var(--accent-l);color:var(--accent)}
.fc__icon--t{background:var(--teal-l);color:var(--teal)}
.fc__icon--a{background:var(--amber-l);color:var(--amber)}
.fc__icon--g{background:var(--green-l);color:var(--green)}
.fc__icon--c{background:var(--cyan-l);color:var(--cyan)}
.fc__title{font-size:1.0625rem;font-weight:800;color:var(--text);margin-bottom:.5rem;letter-spacing:-.2px}
.fc__desc{font-size:.8125rem;color:var(--t2);line-height:1.7}

/* ══════ PROCESS STEPS ══════ */
.steps{position:relative}
.steps__line{position:absolute;left:50%;top:0;bottom:0;width:2px;background:var(--border);transform:translateX(-50%)}
.step{display:grid;grid-template-columns:1fr 80px 1fr;gap:2rem;align-items:center;margin-bottom:3rem;position:relative;z-index:1}
.step:last-child{margin-bottom:0}
.step__text{padding:1.5rem}
.step__text--right{text-align:right}
.step__num{width:56px;height:56px;border-radius:50%;background:var(--surface);border:2px solid var(--accent);display:flex;align-items:center;justify-content:center;font-size:1.25rem;font-weight:900;color:var(--accent);margin:0 auto;position:relative;z-index:2;transition:all .4s var(--ease-out)}
.step:hover .step__num{transform:scale(1.15);box-shadow:0 0 0 12px rgba(99,102,241,.06)}
.step__num-ring{position:absolute;inset:-8px;border-radius:50%;border:2px dashed rgba(99,102,241,.1);animation:spin 25s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.step__title{font-size:1.0625rem;font-weight:800;color:var(--text);margin-bottom:.375rem}
.step__desc{font-size:.8125rem;color:var(--t2);line-height:1.65}
.step__tag{font-family:var(--mono);font-size:.5625rem;font-weight:600;letter-spacing:.08em;color:var(--t3);margin-bottom:.25rem}

/* ══════ CAPABILITIES BAR ══════ */
.cap-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border)}
.cap-item{background:var(--surface);padding:2.5rem 1.5rem;text-align:center;transition:background .3s}
.cap-item:hover{background:#F8F6FF}
.cap-item__num{font-size:2.25rem;font-weight:900;letter-spacing:-.5px;color:var(--accent);line-height:1}
.cap-item__label{font-size:.75rem;color:var(--t3);letter-spacing:.05em;margin-top:.25rem}
.cap-item__icon{font-size:1.5rem;margin-bottom:.5rem;display:block}

/* ══════ COMPARE TABLE ══════ */
.tbl{overflow-x:auto;border-radius:16px;border:1px solid var(--border)}
.tbl table{width:100%;border-collapse:collapse;font-size:.8125rem}
.tbl th{background:linear-gradient(135deg,#F8FAFC,#F1F5F9);padding:.875rem 1.25rem;font-weight:700;text-align:left;font-size:.75rem;color:var(--text);letter-spacing:.04em;border-bottom:2px solid var(--border)}
.tbl th:first-child{background:var(--accent);color:#fff;border-radius:16px 0 0 0}
.tbl td{padding:.75rem 1.25rem;border-bottom:1px solid #F1F5F9;color:var(--t2)}
.tbl tr:last-child td{border-bottom:none}.tbl tr:hover td{background:#F8F6FF}
.tbl .hi{color:var(--accent);font-weight:700}.tbl .ck{color:#10B981;font-weight:700}

/* ══════ CTA ══════ */
.cta{background:linear-gradient(135deg,var(--accent),var(--violet));border-radius:24px;padding:4rem 3rem;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta::before{content:'';position:absolute;top:-30%;right:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(255,255,255,.1) 0%,transparent 60%);pointer-events:none}
.cta__title{font-size:1.75rem;font-weight:900;margin-bottom:.75rem;position:relative;z-index:1;letter-spacing:-.3px}
.cta__desc{font-size:.9375rem;color:rgba(255,255,255,.65);max-width:460px;margin:0 auto 2rem;line-height:1.7;position:relative;z-index:1}
.cta__actions{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}
.btn--white{background:#fff;color:var(--accent);border-color:#fff;box-shadow:var(--shadow-sm)}
.btn--white:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}

@media(max-width:1100px){.chat-demo{display:none}}
@media(max-width:1024px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,1fr)}
  .steps__line{left:30px}
  .step{grid-template-columns:60px 1fr;gap:1rem}
  .step__text--right{text-align:left;order:2}
  .step__text--right{grid-column:2}.step__num{margin:0}
  .cap-row{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .hero__title{font-size:1.875rem}.section{padding:3.5rem 0}
  .cta{padding:2.5rem 1.5rem}.cap-row{grid-template-columns:1fr 1fr}
  .step{grid-template-columns:48px 1fr}
}