:root {
    --bg: #FAFBFC;
    --surface: #FFFFFF;
    --border: #E8ECF0;
    --border-hover: #D0D6DE;
    --text: #0F172A;
    --text-2: #475569;
    --text-3: #94A3B8;
    --blue: #0066CC;
    --blue-light: #E8F2FF;
    --blue-dark: #004B99;
    --teal: #00897B;
    --teal-light: #E6F4F2;
    --amber: #E67E00;
    --amber-light: #FFF5E6;
    --violet: #6C47FF;
    --violet-light: #F2EEFF;
    --gradient-1: linear-gradient(135deg, #0066CC 0%, #00897B 100%);
    --gradient-2: linear-gradient(135deg, #6C47FF 0%, #0066CC 100%);
    --gradient-hero: linear-gradient(160deg, #F0F6FC 0%, #E8F2FF 30%, #FAFBFC 60%, #F0F6FC 100%);
    --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,.05), 0 1px 3px rgba(0,0,0,.04);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.06), 0 2px 8px rgba(0,0,0,.03);
    --shadow-xl: 0 24px 64px rgba(0,0,0,.08);
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --ease: .35s cubic-bezier(.22,1,.36,1);
  }

  *,*::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}
  img{max-width:100%;display:block}ul{list-style:none}a{color:var(--blue);text-decoration:none;transition:color .2s}a:hover{color:var(--blue-dark)}
  .container{max-width:1200px;margin:0 auto;padding:0 1.5rem}

  /* ── Hero ── */
  .hero::before,.hero::after{display:none}
.hero{
    position:relative;background:var(--gradient-hero);padding:6rem 0 5rem;
    overflow:hidden;border-bottom:1px solid var(--border);
  }
  .hero::before{
    content:'';position:absolute;top:-20%;right:-10%;width:600px;height:600px;
    background:radial-gradient(circle, rgba(0,102,204,.06) 0%, transparent 60%);pointer-events:none;
  }
  .hero::after{
    content:'';position:absolute;bottom:10%;left:-5%;width:400px;height:400px;
    background:radial-gradient(circle, rgba(0,137,123,.05) 0%, transparent 60%);pointer-events:none;
  }
  .hero__grid{
    position:absolute;inset:0;pointer-events:none;opacity:.4;
    background-image:
      linear-gradient(rgba(0,102,204,.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0,102,204,.04) 1px, transparent 1px);
    background-size:64px 64px;mask-image:radial-gradient(circle at 50% 50%, black 30%, transparent 70%);
  }
  .hero__inner{position:relative;z-index:1;max-width:800px}
  .hero__overline{
    display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-mono);
    font-size:.6875rem;font-weight:600;color:var(--blue);letter-spacing:.08em;
    text-transform:uppercase;margin-bottom:1.25rem;padding:6px 14px;
    background:var(--blue-light);border-radius:100px;
  }
  .hero__dot{width:7px;height:7px;background:#10B981;border-radius:50%;animation:pulse 2s infinite}
  @keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(16,185,129,.3)}50%{box-shadow:0 0 0 10px rgba(16,185,129,0)}}
  .hero__title{font-size:3.25rem;font-weight:900;line-height:1.08;letter-spacing:-1px;margin-bottom:1.25rem;color:var(--text)}
  .hero__title em{font-style:normal;background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
  .hero__desc{font-size:1.125rem;color:var(--text-2);line-height:1.75;max-width:560px;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 var(--ease);line-height:1.4;border:1.5px solid transparent;
  }
  .btn--primary{background:var(--blue);color:#fff;box-shadow:0 4px 12px rgba(0,102,204,.2)}
  .btn--primary:hover{background:var(--blue-dark);transform:translateY(-1px);box-shadow:0 8px 24px rgba(0,102,204,.25)}
  .btn--outline{background:transparent;color:var(--blue);border-color:var(--border-hover)}
  .btn--outline:hover{background:var(--blue-light);border-color:var(--blue)}
  .btn--white{background:#fff;color:var(--blue);border-color:#fff;box-shadow:var(--shadow-sm)}
  .btn--white:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}

  /* ── Metrics Bar ── */
  .metrics-bar{
    display:grid;grid-template-columns:repeat(4, 1fr);gap:1px;
    background:var(--border);margin-top:-2px;position:relative;z-index:2;
  }
  .metric{
    background:var(--surface);padding:2rem 1.5rem;text-align:center;
    transition:all var(--ease);
  }
  .metric:hover{background:#FAFBFC}
  .metric__num{
    font-size:2rem;font-weight:900;letter-spacing:-.5px;margin-bottom:.25rem;
    background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  }
  .metric__label{font-size:.75rem;font-weight:500;color:var(--text-3);text-transform:uppercase;letter-spacing:.06em}
  .metric__icon{font-size:1.5rem;margin-bottom:.5rem}

  /* ── Sections ── */
  .section{padding:5rem 0}
  .section--light{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
  .section__header{margin-bottom:3rem;text-align:center}
  .section__label{
    display:inline-block;font-family:var(--font-mono);font-size:.625rem;font-weight:600;
    color:var(--blue);letter-spacing:.1em;text-transform:uppercase;margin-bottom:.75rem;
    padding:4px 12px;background:var(--blue-light);border-radius:6px;
  }
  .section__title{font-size:2rem;font-weight:800;color:var(--text);letter-spacing:-.5px;margin-bottom:.75rem}
  .section__title em{font-style:normal;background:var(--gradient-1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
  .section__desc{font-size:.9375rem;color:var(--text-2);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 Cards ── */
  .fcard{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
    padding:2rem;transition:all var(--ease);position:relative;overflow:hidden;
  }
  .fcard::before{
    content:'';position:absolute;top:0;left:0;right:0;height:3px;
    background:var(--gradient-1);transform:scaleX(0);transition:transform var(--ease);
  }
  .fcard:hover{
    border-color:var(--border-hover);box-shadow:var(--shadow-lg);
    transform:translateY(-3px);
  }
  .fcard:hover::before{transform:scaleX(1)}
  .fcard__icon{
    width:52px;height:52px;border-radius:14px;display:flex;align-items:center;
    justify-content:center;font-size:1.5rem;margin-bottom:1.125rem;
  }
  .fcard__icon--blue{background:var(--blue-light);color:var(--blue)}
  .fcard__icon--teal{background:var(--teal-light);color:var(--teal)}
  .fcard__icon--amber{background:var(--amber-light);color:var(--amber)}
  .fcard__icon--violet{background:var(--violet-light);color:var(--violet)}
  .fcard__title{font-size:1.0625rem;font-weight:700;margin-bottom:.5rem;color:var(--text)}
  .fcard__desc{font-size:.8125rem;color:var(--text-2);line-height:1.65}

  /* ── Split ── */
  .split{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
  .split__visual{
    aspect-ratio:4/3;border-radius:var(--radius-xl);display:flex;align-items:center;
    justify-content:center;position:relative;overflow:hidden;
  }
  .split__visual--blue{
    background:linear-gradient(135deg, #E8F2FF, #D0E4F8, #C5DCF2);
    box-shadow:inset 0 0 100px rgba(0,102,204,.06);
  }
  .split__visual--teal{
    background:linear-gradient(135deg, #E6F4F2, #D0EAE8, #BFDFDC);
    box-shadow:inset 0 0 100px rgba(0,137,123,.06);
  }
  .split__visual-inner{
    font-size:5rem;position:relative;z-index:1;
    filter:drop-shadow(0 8px 24px rgba(0,0,0,.08));
  }
  .split__visual-ring{
    position:absolute;width:200px;height:200px;border-radius:50%;
    border:2px dashed rgba(0,102,204,.15);animation:spin 30s linear infinite;
  }
  @keyframes spin{to{transform:rotate(360deg)}}
  .split h3{font-size:1.5rem;font-weight:800;color:var(--text);margin-bottom:.75rem;letter-spacing:-.3px}
  .split p{font-size:.9375rem;color:var(--text-2);line-height:1.75;margin-bottom:1rem}
  .split .tags{display:flex;flex-wrap:wrap;gap:6px}
  .split .tags span{
    padding:5px 14px;font-size:.75rem;font-weight:600;border-radius:100px;
    background:var(--blue-light);color:var(--blue);
  }

  /* ── Spec Card ── */
  .spec-card{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
    padding:1.5rem;display:flex;gap:1rem;align-items:flex-start;transition:all var(--ease);
  }
  .spec-card:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md)}
  .spec-card__icon{font-size:1.5rem;flex-shrink:0;width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:12px}
  .spec-card__icon--blue{background:var(--blue-light)}
  .spec-card__icon--teal{background:var(--teal-light)}
  .spec-card__icon--amber{background:var(--amber-light)}
  .spec-card__icon--violet{background:var(--violet-light)}
  .spec-card__label{font-family:var(--font-mono);font-size:.625rem;font-weight:600;color:var(--text-3);text-transform:uppercase;letter-spacing:.06em;margin-bottom:.25rem}
  .spec-card__value{font-size:.9375rem;font-weight:700;color:var(--text);line-height:1.4}

  /* ── Protocol Scroll ── */
  .proto-scroll{
    overflow:hidden;position:relative;padding:2rem 0;
    background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);
  }
  .proto-scroll__track{
    display:flex;gap:1.25rem;animation:scroll-left 40s linear infinite;width:max-content;
  }
  .proto-scroll__item{
    font-family:var(--font-mono);font-size:.75rem;font-weight:600;color:var(--text-3);
    padding:8px 18px;border:1px solid var(--border);border-radius:100px;
    white-space:nowrap;transition:all var(--ease);
  }
  .proto-scroll__item:hover{color:var(--blue);border-color:var(--blue);background:var(--blue-light)}
  @keyframes scroll-left{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

  /* ── Arch ── */
  .arch{display:flex;align-items:center;justify-content:center;gap:.75rem;flex-wrap:wrap;padding:1rem 0}
  .arch__node{
    text-align:center;padding:1.25rem 1rem;min-width:150px;
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
    transition:all var(--ease);position:relative;
  }
  .arch__node:hover{
    border-color:var(--blue);box-shadow:var(--shadow-md);transform:translateY(-3px);
  }
  .arch__node-icon{font-size:2rem;margin-bottom:.5rem}
  .arch__node-title{font-size:.8125rem;font-weight:700;color:var(--text);margin-bottom:.25rem}
  .arch__node-sub{font-size:.6875rem;color:var(--text-3)}
  .arch__arrow{font-size:1.25rem;color:var(--border-hover);flex-shrink:0;font-weight:300}

  /* ── App Cards ── */
  .acard{
    position:relative;border-radius:var(--radius-xl);overflow:hidden;aspect-ratio:4/3;
    display:flex;align-items:flex-end;transition:all var(--ease);cursor:pointer;
  }
  .acard:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}
  .acard__bg{position:absolute;inset:0}
  .acard__overlay{position:absolute;inset:0;background:linear-gradient(180deg, transparent 20%, rgba(0,0,0,.75) 100%)}
  .acard__content{position:relative;z-index:1;padding:1.75rem;color:#fff}
  .acard__tag{font-family:var(--font-mono);font-size:.625rem;font-weight:600;letter-spacing:.08em;color:rgba(255,255,255,.55);margin-bottom:.375rem}
  .acard__title{font-size:1.125rem;font-weight:800;margin-bottom:.25rem}
  .acard__desc{font-size:.75rem;color:rgba(255,255,255,.65);line-height:1.5}

  .bg-steel{background:linear-gradient(135deg, #0F2027 0%, #203A43 50%, #2C5364 100%)}
  .bg-steel::after{content:'';position:absolute;inset:0;background-image:repeating-linear-gradient(0deg, transparent, transparent 8px, rgba(0,255,255,.03) 8px, rgba(0,255,255,.03) 9px),repeating-linear-gradient(90deg, transparent, transparent 8px, rgba(0,255,255,.03) 8px, rgba(0,255,255,.03) 9px);opacity:.5}
  .bg-energy{background:linear-gradient(135deg, #0A1F1A 0%, #0D2E25 50%, #0F3D30 100%)}
  .bg-energy::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 50%, rgba(0,255,136,.04) 0%, transparent 60%);opacity:.6}
  .bg-auto{background:linear-gradient(135deg, #1A0A2E 0%, #2D1B69 50%, #4A0E78 100%)}
  .bg-auto::after{content:'';position:absolute;inset:0;background:conic-gradient(from 0deg at 50% 50%, rgba(124,58,237,.05) 0deg, transparent 60deg, rgba(124,58,237,.05) 120deg, transparent 180deg, rgba(124,58,237,.05) 240deg, transparent 300deg);opacity:.4}
  .bg-nf{background:linear-gradient(135deg, #1A0F00 0%, #3D2200 50%, #5C3300 100%)}
  .bg-nf::after{content:'';position:absolute;inset:0;background:repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(255,149,0,.04) 10px, rgba(255,149,0,.04) 11px);opacity:.5}

  /* ── Product Cards ── */
  .pcard{
    background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
    padding:1.75rem;transition:all var(--ease);text-align:center;
  }
  .pcard:hover{border-color:var(--border-hover);box-shadow:var(--shadow-md);transform:translateY(-2px)}
  .pcard__icon{font-size:2rem;margin-bottom:.75rem;display:block}
  .pcard__title{font-size:.9375rem;font-weight:700;color:var(--text);margin-bottom:.375rem}
  .pcard__desc{font-size:.75rem;color:var(--text-2);line-height:1.6}

  /* ── CTA ── */
  .cta-block{
    background:var(--gradient-1);border-radius:var(--radius-xl);padding:4rem 3rem;
    text-align:center;color:#fff;position:relative;overflow:hidden;
  }
  .cta-block::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-block__title{font-size:1.75rem;font-weight:800;margin-bottom:.75rem;position:relative;z-index:1}
  .cta-block__desc{font-size:.9375rem;color:#FFFFFF;max-width:480px;margin:0 auto 2rem;line-height:1.65;position:relative;z-index:1}
  .cta-block__actions{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}

  /* ── Compare Table ── */
  .table-wrap{overflow-x:auto;border-radius:var(--radius-lg);border:1px solid var(--border)}
  .table-wrap table{width:100%;border-collapse:collapse;font-size:.8125rem}
  .table-wrap thead 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);
  }
  .table-wrap thead th:first-child{background:var(--blue);color:#fff;border-radius:var(--radius-lg) 0 0 0}
  .table-wrap td{
    padding:.75rem 1.25rem;border-bottom:1px solid #F1F5F9;color:var(--text-2)
  }
  .table-wrap tr:last-child td{border-bottom:none}
  .table-wrap tr:hover td{background:#FAFBFC}
  .table-wrap .hilight{color:var(--blue);font-weight:700}
  .table-wrap .check{color:#10B981;font-weight:700}

  /* ── Responsive ── */
  @media(max-width:1024px){
    .grid--4{grid-template-columns:repeat(2, 1fr)}.grid--3{grid-template-columns:repeat(2, 1fr)}
    .split{grid-template-columns:1fr;gap:2rem}.metrics-bar{grid-template-columns:repeat(2, 1fr)}
    .hero__title{font-size:2.5rem}
  }
  @media(max-width:768px){
    .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}.hero__title{font-size:1.875rem}
    .section{padding:3rem 0}.section__title{font-size:1.5rem}
    .cta-block{padding:2.5rem 1.5rem}.metrics-bar{grid-template-columns:1fr 1fr}
    .arch{flex-direction:column}.arch__arrow{transform:rotate(90deg)}
  }