/* ============================================================
   SolarChain — shared site design system (assets/site.css)
   Canonical design extracted verbatim from index.html so every
   secondary page (cases hub, case-*, presentations, team) shares
   the EXACT nav, footer, tokens, buttons, typography and section
   rhythm of the home page. Page-specific helpers are appended at
   the end. index.html keeps its own inline copy (source of truth).
   ============================================================ */

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Navigation — redesigned */
        nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.78);
            backdrop-filter: saturate(140%) blur(18px);
            -webkit-backdrop-filter: saturate(140%) blur(18px);
            z-index: 1000;
            transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            border-bottom: 1px solid rgba(15, 23, 42, 0.05);
            font-family: 'Onest', system-ui, -apple-system, sans-serif;
        }

        nav.scrolled {
            background: rgba(255, 255, 255, 0.92);
            border-bottom-color: rgba(15, 23, 42, 0.08);
            box-shadow: 0 6px 24px rgba(15, 23, 42, 0.06);
        }

        nav .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.85rem 24px;
            gap: 1.5rem;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo__mark {
            height: 42px;
            width: auto;
            display: block;
            filter: drop-shadow(0 2px 10px rgba(245, 158, 11, 0.28));
            transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
        }

        .logo:hover .logo__mark {
            transform: rotate(20deg) scale(1.05);
        }

        .logo__word {
            height: 22.05px;
            width: auto;
            display: block;
        }

        @media (max-width: 480px) {
            .logo__word { display: none; }
            .logo__mark { height: 37.8px; }
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 1; }
            50% { transform: scale(1.4); opacity: 0.6; }
        }

        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 0.15rem;
            margin: 0 auto;
        }

        .nav-links > li > a,
        .nav-links > li > .nav-trigger {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.55rem 0.95rem;
            color: #475569;
            font-family: inherit;
            font-size: 0.92rem;
            font-weight: 500;
            text-decoration: none;
            border-radius: 10px;
            white-space: nowrap;
            background: transparent;
            border: 0;
            cursor: pointer;
            transition: color 0.2s ease, background 0.2s ease;
            letter-spacing: -0.005em;
        }

        .nav-links > li > a::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 4px;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            transition: width 0.32s cubic-bezier(0.4, 0, 0.2, 1), left 0.32s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .nav-links > li > a:hover {
            color: #0f172a;
        }

        .nav-links > li > a:hover::after {
            width: calc(100% - 1.9rem);
            left: 0.95rem;
        }

        /* Dropdown */
        .nav-dropdown {
            position: relative;
        }

        /* Invisible bridge over the gap so hover persists between trigger and panel */
        .nav-dropdown::after {
            content: '';
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            height: 0.7rem;
            pointer-events: auto;
        }

        .nav-trigger .chev {
            width: 9px;
            height: 9px;
            display: inline-block;
            border-right: 1.5px solid currentColor;
            border-bottom: 1.5px solid currentColor;
            transform: rotate(45deg) translate(-2px, -2px);
            transition: transform 0.25s ease, opacity 0.2s ease;
            opacity: 0.55;
            margin-top: -2px;
        }

        .nav-dropdown:hover .nav-trigger,
        .nav-dropdown.open .nav-trigger {
            color: #0f172a;
            background: rgba(15, 23, 42, 0.04);
        }

        .nav-dropdown:hover .chev,
        .nav-dropdown.open .chev {
            transform: rotate(-135deg) translate(-2px, -2px);
            opacity: 1;
        }

        .nav-panel {
            position: absolute;
            top: calc(100% + 0.7rem);
            left: 50%;
            transform: translateX(-50%) translateY(-8px);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: saturate(150%) blur(16px);
            -webkit-backdrop-filter: saturate(150%) blur(16px);
            border: 1px solid rgba(15, 23, 42, 0.06);
            border-radius: 18px;
            padding: 0.55rem;
            box-shadow:
                0 1px 1px rgba(15, 23, 42, 0.04),
                0 20px 50px rgba(15, 23, 42, 0.12);
            min-width: 260px;
            list-style: none;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: opacity 0.22s ease, transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.22s;
        }

        .nav-panel::before {
            content: '';
            position: absolute;
            top: -6px;
            left: 50%;
            transform: translateX(-50%) rotate(45deg);
            width: 12px;
            height: 12px;
            background: inherit;
            border-left: 1px solid rgba(15, 23, 42, 0.06);
            border-top: 1px solid rgba(15, 23, 42, 0.06);
            border-radius: 3px;
        }

        .nav-dropdown:hover .nav-panel,
        .nav-dropdown.open .nav-panel {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
            transform: translateX(-50%) translateY(0);
        }

        .nav-panel li a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.6rem 0.75rem;
            color: #334155;
            text-decoration: none;
            border-radius: 12px;
            font-size: 0.93rem;
            font-weight: 500;
            font-family: inherit;
            transition: all 0.2s ease;
        }

        .nav-panel li a:hover {
            background: linear-gradient(135deg, rgba(74, 222, 128, 0.08), rgba(6, 182, 212, 0.1));
            color: #0f172a;
            transform: translateX(2px);
        }

        .nav-panel .nav-icon {
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 9px;
            background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(6, 182, 212, 0.18));
            font-size: 0.95rem;
            flex-shrink: 0;
        }

        /* Right cluster */
        .nav-right {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex-shrink: 0;
        }

        /* Language switcher — pill */
        .lang-switcher {
            display: inline-flex;
            align-items: center;
            background: rgba(15, 23, 42, 0.06);
            border-radius: 100px;
            padding: 3px;
            font-family: 'Onest', system-ui, sans-serif;
        }

        .lang-btn {
            padding: 0.36rem 0.8rem;
            background: transparent;
            border: 0;
            border-radius: 100px;
            color: #64748b;
            font-weight: 600;
            cursor: pointer;
            transition: color 0.2s ease, background 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
            font-size: 0.78rem;
            letter-spacing: 0.06em;
            font-family: inherit;
            min-width: 38px;
        }

        .lang-btn:hover {
            color: #0f172a;
        }

        .lang-btn.active {
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            color: white;
            box-shadow: 0 4px 14px rgba(6, 182, 212, 0.32);
        }

        /* Hamburger toggle */
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            background: rgba(15, 23, 42, 0.05);
            border: 0;
            border-radius: 12px;
            cursor: pointer;
            position: relative;
            flex-shrink: 0;
            transition: background 0.3s ease;
            z-index: 1002;
        }

        .nav-toggle:hover {
            background: rgba(15, 23, 42, 0.09);
        }

        .nav-toggle span {
            position: absolute;
            left: 50%;
            height: 1.8px;
            background: #1e293b;
            border-radius: 2px;
            transform: translateX(-50%);
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .nav-toggle span:nth-child(1) { top: 15px; width: 20px; }
        .nav-toggle span:nth-child(2) { top: 21px; width: 14px; }
        .nav-toggle span:nth-child(3) { top: 27px; width: 20px; }

        .nav-toggle.open {
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-toggle.open span {
            background: white;
        }

        .nav-toggle.open span:nth-child(1) {
            top: 21px;
            width: 22px;
            transform: translateX(-50%) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
            transform: translateX(-50%) scale(0);
        }

        .nav-toggle.open span:nth-child(3) {
            top: 21px;
            width: 22px;
            transform: translateX(-50%) rotate(-45deg);
        }

        /* Fullscreen mobile overlay */
        .nav-overlay {
            position: fixed;
            inset: 0;
            background:
                radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.22) 0%, transparent 55%),
                radial-gradient(ellipse at 10% 80%, rgba(74, 222, 128, 0.14) 0%, transparent 50%),
                linear-gradient(160deg, #0a1224 0%, #0f172a 50%, #060c1c 100%);
            z-index: 1001;
            display: flex;
            flex-direction: column;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.4s ease, visibility 0.4s;
            overflow-y: auto;
        }

        .nav-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        .nav-overlay::after {
            content: '';
            position: absolute;
            width: 700px;
            height: 700px;
            top: 30%;
            right: -300px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.16) 0%, transparent 60%);
            pointer-events: none;
            animation: orbit 18s ease-in-out infinite;
            filter: blur(20px);
        }

        @keyframes orbit {
            0%, 100% { transform: translate(0, 0) scale(1); }
            50% { transform: translate(-80px, 40px) scale(1.1); }
        }

        .nav-overlay__inner {
            position: relative;
            z-index: 2;
            max-width: 720px;
            width: 100%;
            margin: 0 auto;
            padding: 6.5rem 2.5rem 3rem;
            display: flex;
            flex-direction: column;
            min-height: 100%;
        }

        .nav-overlay__label {
            font-family: 'Onest', sans-serif;
            font-size: 0.72rem;
            color: rgba(6, 182, 212, 0.85);
            letter-spacing: 0.28em;
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 1.5rem;
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 0.5s ease, transform 0.5s ease;
            transition-delay: 0.05s;
        }

        .nav-overlay.open .nav-overlay__label {
            opacity: 1;
            transform: translateY(0);
        }

        .nav-overlay__links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.05rem;
        }

        .nav-overlay__links li {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.55s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.55s cubic-bezier(0.2, 0.7, 0.2, 1);
        }

        .nav-overlay.open .nav-overlay__links li:nth-child(1) { transition-delay: 0.10s; }
        .nav-overlay.open .nav-overlay__links li:nth-child(2) { transition-delay: 0.15s; }
        .nav-overlay.open .nav-overlay__links li:nth-child(3) { transition-delay: 0.20s; }
        .nav-overlay.open .nav-overlay__links li:nth-child(4) { transition-delay: 0.25s; }
        .nav-overlay.open .nav-overlay__links li:nth-child(5) { transition-delay: 0.30s; }
        .nav-overlay.open .nav-overlay__links li:nth-child(6) { transition-delay: 0.35s; }
        .nav-overlay.open .nav-overlay__links li:nth-child(7) { transition-delay: 0.40s; }
        .nav-overlay.open .nav-overlay__links li:nth-child(8) { transition-delay: 0.45s; }
        .nav-overlay.open .nav-overlay__links li:nth-child(9) { transition-delay: 0.50s; }

        .nav-overlay.open .nav-overlay__links li {
            opacity: 1;
            transform: translateY(0);
        }

        .nav-overlay__links a {
            font-family: 'Onest', sans-serif;
            font-size: clamp(1.9rem, 6.5vw, 3.4rem);
            font-weight: 400;
            color: rgba(255, 255, 255, 0.92);
            text-decoration: none;
            padding: 0.35rem 0;
            display: inline-flex;
            align-items: baseline;
            gap: 1.1rem;
            line-height: 1.15;
            letter-spacing: -0.025em;
            transition: color 0.25s ease, transform 0.3s ease;
        }

        .nav-overlay__links a::before {
            content: attr(data-index);
            font-size: 0.72rem;
            color: #06b6d4;
            font-weight: 600;
            letter-spacing: 0.15em;
            opacity: 0.55;
            font-variant-numeric: tabular-nums;
            transition: opacity 0.3s ease, transform 0.3s ease;
            transform: translateY(-0.6em);
        }

        .nav-overlay__links a:hover {
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transform: translateX(8px);
        }

        .nav-overlay__links a:hover::before {
            opacity: 1;
        }

        .nav-overlay__footer {
            margin-top: auto;
            padding-top: 3rem;
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            flex-wrap: wrap;
            gap: 1.5rem;
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 0.6s ease, transform 0.6s ease;
            transition-delay: 0.6s;
        }

        .nav-overlay.open .nav-overlay__footer {
            opacity: 1;
            transform: translateY(0);
        }

        .nav-overlay__contact {
            color: rgba(255, 255, 255, 0.55);
            font-family: 'Onest', sans-serif;
            font-size: 0.88rem;
            line-height: 1.7;
        }

        .nav-overlay__contact a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .nav-overlay__contact a:hover {
            color: #06b6d4;
        }

        .nav-overlay .lang-switcher {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .nav-overlay .lang-btn {
            color: rgba(255, 255, 255, 0.55);
        }

        .nav-overlay .lang-btn:hover {
            color: white;
        }

        body.menu-open {
            overflow: hidden;
        }

        /* Hero Section */
        .hero {
            height: 100vh;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
            display: flex;
            align-items: center;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
            animation: rotate 20s linear infinite;
        }

        @keyframes rotate {
            from {
                transform: rotate(0deg);
            }

            to {
                transform: rotate(360deg);
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            max-width: 600px;
            opacity: 0.9;
        }

        .cta-button {
            display: inline-block;
            padding: 1rem 2rem;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(6, 182, 212, 0.3);
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(6, 182, 212, 0.5);
        }

        /* Sections */
        section {
            padding: 5rem 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 3rem;
            color: #1e293b;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            margin-bottom: 4rem;
            color: #64748b;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* About Section */
        .about {
            background: #f8fafc;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 1rem;
            color: #1e293b;
        }

        .about-text p {
            margin-bottom: 1.5rem;
            color: #64748b;
            line-height: 1.8;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 4rem;
        }

        .feature-card {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            border: 1px solid #e2e8f0;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            font-size: 1.5rem;
        }

        .feature-card h4 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            color: #1e293b;
        }

        .feature-card p {
            color: #64748b;
            line-height: 1.6;
        }

        /* Applications */
        .applications {
            background: white;
        }

        .app-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 2rem;
        }

        .app-card {
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            padding: 2rem;
            border-radius: 20px;
            position: relative;
            overflow: hidden;
        }

        .app-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
        }

        .app-card h4 {
            font-size: 1.4rem;
            margin-bottom: 1rem;
            color: #1e293b;
        }

        .app-card p {
            color: #64748b;
            line-height: 1.6;
        }

        /* ---------------- TEAM ---------------- */
        .team {
            background:
                radial-gradient(58% 55% at 88% 0%, rgba(6, 182, 212, 0.07) 0%, transparent 55%),
                radial-gradient(58% 55% at 8% 100%, rgba(74, 222, 128, 0.06) 0%, transparent 55%),
                #ffffff;
        }

        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
            gap: 2rem;
            margin-top: 3.4rem;
        }

        .team-card {
            background: #fff;
            border: 1px solid #e7eef5;
            border-radius: 22px;
            padding: 1.5rem 1.5rem 1.9rem;
            box-shadow: 0 14px 36px rgba(15, 31, 51, 0.07);
            transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
        }

        .team-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 28px 60px rgba(15, 31, 51, 0.13);
            border-color: rgba(34, 211, 238, 0.45);
        }

        /* Photo / placeholder slot — swap the inner placeholder for a real <img> */
        .team-card__media {
            position: relative;
            aspect-ratio: 4 / 5;
            border-radius: 16px;
            overflow: hidden;
            margin-bottom: 1.3rem;
            background: linear-gradient(150deg, #0b1426 0%, #0f1f33 60%, #06283a 100%);
        }

        .team-card__media img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .team-card__ph {
            position: absolute;
            inset: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background:
                radial-gradient(120% 90% at 50% 0%, rgba(34, 211, 238, 0.22) 0%, transparent 55%),
                radial-gradient(120% 95% at 50% 100%, rgba(74, 222, 128, 0.18) 0%, transparent 55%);
        }

        .team-card__ph::after {
            /* subtle person silhouette behind the monogram */
            content: '';
            position: absolute;
            bottom: -16%;
            width: 64%;
            aspect-ratio: 1;
            border-radius: 50% 50% 44% 44%;
            background: rgba(255, 255, 255, 0.05);
            box-shadow: 0 -46px 0 -10px rgba(255, 255, 255, 0.07);
        }

        .team-card__mono {
            position: relative;
            z-index: 1;
            font-family: var(--sc-display);
            font-weight: 700;
            font-size: 2.6rem;
            letter-spacing: 0.02em;
            background: var(--sc-grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .team-card__name {
            font-family: var(--sc-display);
            font-weight: 600;
            font-size: 1.32rem;
            color: #0f1f33;
            margin-bottom: 0.5rem;
        }

        .team-card__role {
            display: inline-block;
            font-family: 'Onest', sans-serif;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            background: var(--sc-grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.9rem;
        }

        .team-card__bio {
            font-family: 'Onest', sans-serif;
            color: #5a7088;
            line-height: 1.65;
            font-size: 0.98rem;
        }

        .team-foot {
            text-align: center;
            margin-top: 3.2rem;
        }

        .team-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.95rem 1.9rem;
            border-radius: 50px;
            font-family: 'Onest', sans-serif;
            font-weight: 600;
            font-size: 1rem;
            color: #06283a;
            background: var(--sc-grad);
            box-shadow: 0 14px 30px rgba(6, 182, 212, 0.25);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .team-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 20px 42px rgba(6, 182, 212, 0.35);
        }

        @media (max-width: 768px) {
            .team-grid { grid-template-columns: 1fr; }
        }

        /* Patent Section */
        .patent {
            background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
            color: white;
            text-align: center;
        }

        .patent-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .patent-number {
            font-size: 3rem;
            font-weight: bold;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }

        .patent-date {
            font-size: 1.2rem;
            opacity: 0.8;
            margin-bottom: 2rem;
        }

        .patent-image {
            max-width: 600px;
            margin: 2rem auto;
            cursor: pointer;
            transition: transform 0.3s ease;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
        }

        .patent-image:hover {
            transform: scale(1.02);
        }

        .patent-image img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Contact */
        .contact {
            background: #f8fafc;
            text-align: center;
        }

        .contact-info {
            display: inline-block;
            padding: 2rem 3rem;
            background: white;
            border-radius: 20px;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }

        .contact-name {
            font-size: 1.5rem;
            font-weight: bold;
            color: #1e293b;
            margin-bottom: 0.5rem;
        }

        .contact-phone {
            font-size: 1.8rem;
            font-weight: 600;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .contact-address {
            font-style: normal;
            margin-top: 1rem;
            color: #64748b;
            line-height: 1.7;
            font-size: 1rem;
        }

        .contact-address__row {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 0.6rem;
            flex-wrap: wrap;
            margin-top: 0.5rem;
        }

        .contact-address__row a {
            color: #0f172a;
            font-weight: 600;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .contact-address__row a:hover {
            color: #06b6d4;
        }

        .contact-address__sep {
            color: #cbd5e1;
        }

        .contact-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-top: 1.5rem;
        }

        .contact-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 1.5rem;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            color: white;
            text-decoration: none;
            border-radius: 25px;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .contact-link:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(6, 182, 212, 0.3);
        }

        .contact-link svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        /* Footer */
        footer {
            background: #1e293b;
            color: white;
            text-align: center;
            padding: 2rem 0;
        }

        /* Mobile Responsiveness */
        @media (max-width: 1024px) {
            .nav-links,
            nav > .container > .nav-right > .lang-switcher {
                display: none;
            }

            .nav-toggle {
                display: block;
            }

            nav .container {
                padding: 0.7rem 20px;
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }

            .hero p {
                font-size: 1rem;
            }

            .about-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .section-title {
                font-size: 2rem;
            }

            .patent-number {
                font-size: 2rem;
            }

            .contact-links {
                flex-direction: column;
                gap: 1rem;
            }
        }

        /* Smooth scrolling */
        html {
            scroll-behavior: smooth;
        }

        /* Animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Documents Section */
        .documents {
            background: #f8fafc;
        }

        .docs-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .doc-card {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            text-align: center;
        }

        .doc-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        }

        .doc-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }

        .doc-card h4 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            color: #1e293b;
        }

        .doc-link {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            color: white;
            text-decoration: none;
            border-radius: 25px;
            font-weight: 600;
            transition: all 0.3s ease;
            margin-top: 1rem;
        }

        .doc-link:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(6, 182, 212, 0.3);
        }

        /* Videos Section */
        .videos {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
            color: white;
            position: relative;
            overflow: hidden;
        }

        .videos::before {
            content: '';
            position: absolute;
            width: 180%;
            height: 180%;
            top: -40%;
            left: -40%;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
            animation: rotate 25s linear infinite;
            pointer-events: none;
        }

        .videos .container {
            position: relative;
            z-index: 2;
        }

        .videos .section-title {
            color: white;
        }

        .videos .section-subtitle {
            color: #cbd5e1;
        }

        .video-wrapper {
            position: relative;
            max-width: 960px;
            margin: 0 auto;
            aspect-ratio: 16 / 9;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 25px 60px rgba(0, 0, 0, 0.45);
            background: #000;
        }

        .video-wrapper iframe {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            border: 0;
        }

        .video-caption {
            text-align: center;
            margin-top: 1.5rem;
            font-size: 1.1rem;
            color: #e2e8f0;
            max-width: 760px;
            margin-left: auto;
            margin-right: auto;
        }

        .video-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-top: 2rem;
            flex-wrap: wrap;
        }

        .video-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.9rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        .video-btn svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        .video-btn.primary {
            background: linear-gradient(135deg, #4ade80, #06b6d4);
            color: white;
            box-shadow: 0 10px 30px rgba(6, 182, 212, 0.35);
        }

        .video-btn.primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(6, 182, 212, 0.55);
        }

        .video-btn.secondary {
            background: rgba(255, 255, 255, 0.08);
            color: white;
            border: 2px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(6px);
        }

        .video-btn.secondary:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #06b6d4;
            transform: translateY(-3px);
        }

        /* Presentations CTA Banner */
        .pres-banner {
            margin-top: 3rem;
            background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
            border-radius: 20px;
            padding: 2.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
            color: white;
        }

        .pres-banner-text h3 {
            font-size: 1.6rem;
            margin-bottom: 0.5rem;
        }

        .pres-banner-text p {
            color: #cbd5e1;
            max-width: 540px;
        }

        .pres-banner .cta-button {
            white-space: nowrap;
        }

        /* Gallery Section */
        .gallery {
            background: white;
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 3rem;
        }

        .gallery-item {
            position: relative;
            overflow: hidden;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            cursor: pointer;
            aspect-ratio: 1;
        }

        .gallery-item:hover {
            transform: scale(1.05);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .gallery-item:hover img {
            transform: scale(1.1);
        }

        /* Lightbox */
        .lightbox {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.95);
            z-index: 9999;
            justify-content: center;
            align-items: center;
            padding: 2rem;
        }

        .lightbox.active {
            display: flex;
        }

        .lightbox img {
            max-width: 95%;
            max-height: 95%;
            object-fit: contain;
            border-radius: 10px;
            image-rendering: -webkit-optimize-contrast;
            image-rendering: crisp-edges;
        }

        .lightbox-close {
            position: absolute;
            top: 2rem;
            right: 2rem;
            font-size: 3rem;
            color: white;
            cursor: pointer;
            background: none;
            border: none;
            transition: transform 0.3s ease;
        }

        .lightbox-close:hover {
            transform: scale(1.2);
        }

        /* ============================================================
           REDESIGN — "Technical Luminance"
           Header · Hero · Documentation · Footer
           ============================================================ */
        :root {
            --sc-bg: #070d1a;
            --sc-bg-2: #0b1426;
            --sc-green: #4ade80;
            --sc-cyan: #06b6d4;
            --sc-cyan-2: #22d3ee;
            --sc-ink: #e6edf6;
            --sc-muted: #93a6bd;
            --sc-grad: linear-gradient(120deg, #4ade80 0%, #22d3ee 60%, #06b6d4 100%);
            --sc-display: 'Unbounded', 'Onest', system-ui, sans-serif;
        }

        /* Scroll progress bar */
        #scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            width: 0;
            background: var(--sc-grad);
            z-index: 1003;
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.6);
            transition: width 0.08s linear;
        }

        /* Header CTA pill */
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.5rem 1.05rem;
            border-radius: 100px;
            font-family: 'Onest', sans-serif;
            font-weight: 600;
            font-size: 0.86rem;
            text-decoration: none;
            color: #06283a;
            background: var(--sc-grad);
            box-shadow: 0 6px 18px rgba(6, 182, 212, 0.32);
            transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(6, 182, 212, 0.5);
            filter: brightness(1.05);
        }

        .nav-cta__spark {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: #06283a;
            box-shadow: 0 0 0 3px rgba(6, 40, 58, 0.25);
        }

        /* ---------------- HERO ---------------- */
        .hero {
            min-height: 100vh;
            height: auto;
            background:
                radial-gradient(120% 90% at 85% -10%, rgba(6, 182, 212, 0.22) 0%, transparent 55%),
                radial-gradient(90% 80% at 0% 110%, rgba(74, 222, 128, 0.16) 0%, transparent 55%),
                linear-gradient(160deg, var(--sc-bg) 0%, var(--sc-bg-2) 55%, #060b16 100%);
            align-items: center;
            padding: 7rem 0 4rem;
        }

        /* kill the old rotating radial */
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px) 0 0 / 100% 64px,
                linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px) 0 0 / 64px 100%;
            -webkit-mask-image: radial-gradient(120% 80% at 50% 30%, #000 30%, transparent 78%);
            mask-image: radial-gradient(120% 80% at 50% 30%, #000 30%, transparent 78%);
            animation: none;
            width: 100%;
            height: 100%;
            pointer-events: none;
            opacity: 0.9;
        }

        .hero-wave {
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            width: 100%;
            height: 46%;
            z-index: 1;
            pointer-events: none;
            opacity: 0.9;
            -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
            mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
        }

        .hero .container { position: relative; z-index: 2; }
        .hero-content { max-width: 920px; }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-family: 'Onest', sans-serif;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            color: #b9e8ef;
            padding: 0.5rem 1rem 0.5rem 0.8rem;
            border: 1px solid rgba(34, 211, 238, 0.28);
            border-radius: 100px;
            background: rgba(6, 182, 212, 0.08);
            backdrop-filter: blur(6px);
            margin-bottom: 1.8rem;
        }

        .hero-eyebrow__dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--sc-grad);
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.9);
            animation: pulse 2.4s ease-in-out infinite;
        }

        .hero .hero-title {
            font-family: var(--sc-display);
            font-weight: 700;
            font-size: clamp(2.6rem, 6.6vw, 5.4rem);
            line-height: 0.98;
            letter-spacing: -0.03em;
            color: #fff;
            background: none;
            -webkit-text-fill-color: #fff;
            margin: 0 0 1.6rem;
            text-wrap: balance;
        }

        .hero .hero-title__line { display: block; }

        .hero .hero-title__grad {
            background: var(--sc-grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
        }

        .hero-lead {
            font-family: 'Onest', sans-serif;
            font-size: clamp(1.05rem, 1.6vw, 1.3rem);
            line-height: 1.65;
            color: var(--sc-muted);
            max-width: 660px;
            margin: 0 0 2.4rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 3.2rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 1rem 1.9rem;
            border-radius: 100px;
            font-family: 'Onest', sans-serif;
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            cursor: pointer;
            transition: transform 0.28s cubic-bezier(0.3, 0.8, 0.3, 1), box-shadow 0.28s ease, background 0.28s ease, border-color 0.28s ease, color 0.28s ease;
        }

        .btn--primary {
            background: var(--sc-grad);
            color: #06283a;
            box-shadow: 0 12px 34px rgba(6, 182, 212, 0.36);
        }

        .btn--primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 18px 46px rgba(6, 182, 212, 0.55);
        }

        .btn--ghost {
            color: var(--sc-ink);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(148, 163, 184, 0.28);
            backdrop-filter: blur(6px);
        }

        .btn--ghost:hover {
            transform: translateY(-3px);
            border-color: rgba(34, 211, 238, 0.6);
            color: #fff;
            background: rgba(34, 211, 238, 0.08);
        }

        .btn__arrow { transition: transform 0.28s ease; }
        .btn:hover .btn__arrow { transform: translateX(4px); }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, auto);
            gap: 2.4rem;
            margin: 0;
            padding-top: 2rem;
            border-top: 1px solid rgba(148, 163, 184, 0.16);
            width: fit-content;
            max-width: 100%;
        }

        .hero-stat { margin: 0; }

        .hero-stat dt {
            font-family: var(--sc-display);
            font-weight: 600;
            font-size: clamp(1.4rem, 2.6vw, 2.1rem);
            line-height: 1;
            background: var(--sc-grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.5rem;
            white-space: nowrap;
        }

        .hero-stat dd {
            margin: 0;
            font-family: 'Onest', sans-serif;
            font-size: 0.82rem;
            color: var(--sc-muted);
            letter-spacing: 0.01em;
            line-height: 1.35;
            max-width: 12ch;
        }

        .hero-scroll {
            position: absolute;
            left: 50%;
            bottom: 1.6rem;
            transform: translateX(-50%);
            z-index: 3;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.55rem;
            text-decoration: none;
            font-family: 'Onest', sans-serif;
            font-size: 0.68rem;
            letter-spacing: 0.28em;
            text-transform: uppercase;
            color: var(--sc-muted);
        }

        .hero-scroll__line {
            width: 1px;
            height: 42px;
            background: linear-gradient(rgba(34, 211, 238, 0.9), transparent);
            position: relative;
            overflow: hidden;
        }

        .hero-scroll__line::after {
            content: '';
            position: absolute;
            top: -50%;
            left: 0;
            width: 100%;
            height: 50%;
            background: #22d3ee;
            animation: scrollDot 1.8s cubic-bezier(0.7, 0, 0.3, 1) infinite;
        }

        @keyframes scrollDot {
            0% { top: -50%; }
            100% { top: 100%; }
        }

        /* staggered entrance */
        .fade-up {
            opacity: 0;
            transform: translateY(26px);
            animation: fadeUp 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
        }

        .hero-eyebrow.fade-up { animation-delay: 0.05s; }
        .hero-title__line:nth-child(1) { animation-delay: 0.14s; }
        .hero-title__line:nth-child(2) { animation-delay: 0.24s; }
        .hero-lead.fade-up { animation-delay: 0.36s; }
        .hero-actions.fade-up { animation-delay: 0.46s; }
        .hero-stats.fade-up { animation-delay: 0.56s; }

        @keyframes fadeUp {
            to { opacity: 1; transform: translateY(0); }
        }

        @media (prefers-reduced-motion: reduce) {
            .fade-up { animation: none; opacity: 1; transform: none; }
            .hero-scroll__line::after { animation: none; }
        }

        /* ---------------- DOCUMENTATION (redesign) ---------------- */
        .documents {
            background:
                radial-gradient(80% 60% at 90% 0%, rgba(6, 182, 212, 0.06) 0%, transparent 60%),
                #f4f8fb;
            position: relative;
        }

        .docs-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 2.6rem;
        }

        .docs-eyebrow {
            font-family: 'Onest', sans-serif;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            background: var(--sc-grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: block;
            margin-bottom: 0.7rem;
        }

        .docs-head h2 {
            font-family: var(--sc-display);
            font-weight: 600;
            font-size: clamp(1.9rem, 4vw, 2.7rem);
            letter-spacing: -0.02em;
            color: #0f1f33;
            margin: 0;
            line-height: 1.05;
        }

        .docs-head p {
            color: #5a7088;
            max-width: 420px;
            font-size: 1.02rem;
            margin: 0;
        }

        .docs-grid {
            grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
            gap: 1.1rem;
            margin-top: 0;
        }

        .doc-card {
            text-align: left;
            padding: 1.6rem 1.5rem;
            border-radius: 18px;
            border: 1px solid #e4ecf3;
            box-shadow: 0 10px 28px rgba(15, 31, 51, 0.06);
            display: flex;
            flex-direction: column;
            gap: 0.7rem;
            position: relative;
            overflow: hidden;
        }

        .doc-card::after {
            content: '';
            position: absolute;
            inset: 0 0 auto 0;
            height: 3px;
            background: var(--sc-grad);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s cubic-bezier(0.3, 0.8, 0.3, 1);
        }

        .doc-card:hover::after { transform: scaleX(1); }

        .doc-card__top {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .doc-card .doc-icon {
            width: 46px;
            height: 46px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(74, 222, 128, 0.16), rgba(6, 182, 212, 0.18));
            font-size: 1.5rem;
            margin: 0;
        }

        .doc-type {
            font-family: 'Onest', sans-serif;
            font-size: 0.68rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            color: #fff;
            background: #0f1f33;
            padding: 0.28rem 0.6rem;
            border-radius: 7px;
        }

        .doc-card h4 {
            font-size: 1.05rem;
            color: #0f1f33;
            margin: 0;
            line-height: 1.35;
            flex: 1;
        }

        .doc-card .doc-link {
            margin-top: auto;
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0;
            background: none;
            color: #0891b2;
            font-weight: 600;
            font-size: 0.92rem;
            box-shadow: none;
        }

        .doc-card .doc-link:hover {
            transform: none;
            box-shadow: none;
            color: #06b6d4;
            gap: 0.7rem;
        }

        /* CTA panel replacing old banner */
        .pres-banner {
            margin-top: 2.4rem;
            background:
                radial-gradient(80% 140% at 100% 0%, rgba(6, 182, 212, 0.22) 0%, transparent 55%),
                linear-gradient(135deg, #0b1426 0%, #0f1f33 100%);
            border: 1px solid rgba(34, 211, 238, 0.15);
            border-radius: 22px;
            padding: 2.6rem;
            overflow: hidden;
            position: relative;
        }

        .pres-banner::before {
            content: '';
            position: absolute;
            right: -40px;
            top: -40px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(74, 222, 128, 0.25), transparent 70%);
            filter: blur(12px);
            pointer-events: none;
        }

        .pres-banner-text h3 {
            font-family: var(--sc-display);
            font-weight: 600;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 0.6rem;
            position: relative;
        }

        .pres-banner-actions {
            display: flex;
            gap: 0.9rem;
            flex-wrap: wrap;
            margin-top: 1.6rem;
            position: relative;
        }

        /* ---------------- FOOTER (redesign) ---------------- */
        footer {
            background:
                radial-gradient(70% 120% at 100% 0%, rgba(6, 182, 212, 0.12) 0%, transparent 55%),
                radial-gradient(60% 120% at 0% 100%, rgba(74, 222, 128, 0.08) 0%, transparent 55%),
                linear-gradient(180deg, #0b1426 0%, #060b16 100%);
            color: var(--sc-muted);
            text-align: left;
            padding: 0;
            position: relative;
            overflow: hidden;
            border-top: 1px solid rgba(34, 211, 238, 0.14);
        }

        .footer-watermark {
            position: absolute;
            left: 50%;
            bottom: -3.2rem;
            transform: translateX(-50%);
            font-family: var(--sc-display);
            font-weight: 800;
            font-size: clamp(4rem, 18vw, 15rem);
            letter-spacing: -0.04em;
            line-height: 1;
            color: rgba(255, 255, 255, 0.025);
            white-space: nowrap;
            pointer-events: none;
            user-select: none;
        }

        .footer-main {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 2.6rem;
            padding: 4.2rem 0 3rem;
        }

        .footer-brand__logo {
            display: inline-flex;
            align-items: center;
            gap: 0.55rem;
            margin-bottom: 1rem;
        }

        .footer-brand__logo .fb-mark {
            height: 39.6px;
            width: auto;
            display: block;
            filter: drop-shadow(0 2px 10px rgba(245, 158, 11, 0.25));
        }

        .footer-brand__logo .fb-word {
            height: 20.9px;
            width: auto;
            display: block;
        }

        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.6;
            max-width: 30ch;
            margin-bottom: 1.4rem;
        }

        .footer-patent {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-family: 'Onest', sans-serif;
            font-size: 0.78rem;
            font-weight: 600;
            color: #b9e8ef;
            padding: 0.4rem 0.85rem;
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: 100px;
            background: rgba(6, 182, 212, 0.07);
        }

        .footer-col h5 {
            font-family: 'Onest', sans-serif;
            font-size: 0.74rem;
            font-weight: 700;
            letter-spacing: 0.16em;
            text-transform: uppercase;
            color: #6f88a3;
            margin-bottom: 1.1rem;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.65rem;
        }

        .footer-col a {
            color: var(--sc-ink);
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.2s ease, padding-left 0.2s ease;
            position: relative;
        }

        .footer-col a:hover { color: #22d3ee; padding-left: 6px; }

        .footer-contact { font-style: normal; }
        .footer-contact p { font-size: 0.92rem; line-height: 1.55; margin-bottom: 0.9rem; color: var(--sc-muted); }
        .footer-contact a { color: var(--sc-ink); text-decoration: none; }
        .footer-contact a:hover { color: #22d3ee; }

        .footer-social {
            display: flex;
            gap: 0.6rem;
            margin-top: 1.1rem;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 11px;
            border: 1px solid rgba(148, 163, 184, 0.2);
            background: rgba(255, 255, 255, 0.03);
            transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }

        .footer-social a:hover {
            transform: translateY(-3px);
            border-color: rgba(34, 211, 238, 0.6);
            background: rgba(34, 211, 238, 0.1);
        }

        .footer-social svg { width: 19px; height: 19px; fill: #cdd9e6; }
        .footer-social a:hover svg { fill: #22d3ee; }

        .footer-bottom {
            position: relative;
            z-index: 1;
            border-top: 1px solid rgba(148, 163, 184, 0.12);
            padding: 1.5rem 0 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: 0.84rem;
        }

        .footer-bottom__made {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-flag {
            width: 18px;
            height: 12px;
            border-radius: 2px;
            background: linear-gradient(#3b82f6 0 50%, #fbbf24 50% 100%);
            display: inline-block;
        }

        .footer-top-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            color: var(--sc-ink);
            text-decoration: none;
            font-weight: 600;
            border: 1px solid rgba(148, 163, 184, 0.22);
            padding: 0.5rem 1rem;
            border-radius: 100px;
            transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
        }

        .footer-top-btn:hover { border-color: rgba(34, 211, 238, 0.6); color: #22d3ee; transform: translateY(-2px); }

        /* ---------------- responsive ---------------- */
        @media (max-width: 980px) {
            .footer-main { grid-template-columns: 1fr 1fr; gap: 2.2rem; }
            .footer-brand { grid-column: 1 / -1; }
        }

        @media (max-width: 760px) {
            .nav-cta { display: none; }
            .hero { padding: 6rem 0 3rem; }
            .hero-stats { grid-template-columns: 1fr 1fr; gap: 1.5rem 1.6rem; }
            .hero-wave { height: 26%; opacity: 0.6; }
            .hero-scroll { display: none; }
            .docs-head { flex-direction: column; align-items: flex-start; gap: 1rem; }
            .footer-main { grid-template-columns: 1fr; gap: 1.8rem; }
            .footer-bottom { flex-direction: column; align-items: flex-start; }
        }

        /* ============================================================
           SECTION REFRESH — About · Applications · Patent · Gallery
           · Videos · Contact  (Technical Luminance, cohesive)
           ============================================================ */
        section { padding: 6rem 0; }

        /* Shared eyebrow + title rhythm */
        .section-eyebrow {
            display: block;
            text-align: center;
            font-family: 'Onest', sans-serif;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.18em;
            text-transform: uppercase;
            background: var(--sc-grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 0.8rem;
        }

        .section-title {
            font-family: var(--sc-display);
            font-weight: 600;
            font-size: clamp(1.95rem, 4.4vw, 3rem);
            letter-spacing: -0.025em;
            line-height: 1.04;
            color: #0f1f33;
            margin-bottom: 1rem;
            text-wrap: balance;
        }

        .section-subtitle {
            font-family: 'Onest', sans-serif;
            font-size: 1.08rem;
            color: #5a7088;
            line-height: 1.6;
        }

        /* ---------------- ABOUT / FEATURES ---------------- */
        .about {
            background:
                radial-gradient(70% 60% at 12% 0%, rgba(74, 222, 128, 0.06) 0%, transparent 55%),
                radial-gradient(60% 60% at 100% 100%, rgba(6, 182, 212, 0.07) 0%, transparent 55%),
                #f4f8fb;
        }

        .features-grid { gap: 1.4rem; margin-top: 3.4rem; }

        .feature-card {
            position: relative;
            border-radius: 20px;
            border: 1px solid #e4ecf3;
            padding: 2.1rem 1.9rem;
            box-shadow: 0 12px 30px rgba(15, 31, 51, 0.05);
            overflow: hidden;
            counter-increment: feat;
        }

        .features-grid { counter-reset: feat; }

        .feature-card::before {
            content: '0' counter(feat);
            position: absolute;
            top: 1.4rem;
            right: 1.6rem;
            font-family: var(--sc-display);
            font-weight: 700;
            font-size: 1.1rem;
            color: transparent;
            background: var(--sc-grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            opacity: 0.55;
        }

        .feature-card::after {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--sc-grad);
            transform: scaleY(0);
            transform-origin: top;
            transition: transform 0.4s cubic-bezier(0.3, 0.8, 0.3, 1);
        }

        .feature-card:hover { transform: translateY(-6px); box-shadow: 0 24px 48px rgba(15, 31, 51, 0.12); }
        .feature-card:hover::after { transform: scaleY(1); }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(74, 222, 128, 0.16), rgba(6, 182, 212, 0.2));
            color: #0891b2;
            box-shadow: inset 0 0 0 1px rgba(6, 182, 212, 0.18);
        }

        .feature-card h4 { font-family: 'Onest', sans-serif; font-weight: 700; color: #0f1f33; font-size: 1.18rem; }
        .feature-card p { color: #5a7088; }

        /* ---------------- APPLICATIONS ---------------- */
        .applications { background: #fff; }
        .app-grid { gap: 1.4rem; margin-top: 3.4rem; }

        .app-card {
            background: #f4f8fb;
            border: 1px solid #e4ecf3;
            border-radius: 22px;
            padding: 2.2rem;
            transition: transform 0.35s cubic-bezier(0.3, 0.8, 0.3, 1), box-shadow 0.35s ease, border-color 0.35s ease;
        }

        .app-card::before { height: 100%; width: 4px; top: 0; left: 0; opacity: 0; transition: opacity 0.35s ease; }
        .app-card:hover { transform: translateY(-6px); box-shadow: 0 24px 50px rgba(15, 31, 51, 0.12); border-color: rgba(6, 182, 212, 0.3); }
        .app-card:hover::before { opacity: 1; }
        .app-card h4 { font-family: 'Onest', sans-serif; font-weight: 700; font-size: 1.35rem; }
        .app-card p { color: #5a7088; }

        /* ---------------- PATENT ---------------- */
        .patent {
            background:
                radial-gradient(90% 70% at 80% -10%, rgba(6, 182, 212, 0.2) 0%, transparent 55%),
                radial-gradient(70% 70% at 0% 110%, rgba(74, 222, 128, 0.12) 0%, transparent 55%),
                linear-gradient(160deg, #0b1426 0%, #0f1f33 60%, #060b16 100%);
            border-top: 1px solid rgba(34, 211, 238, 0.12);
            border-bottom: 1px solid rgba(34, 211, 238, 0.12);
        }

        .patent .section-title { color: #fff; font-family: var(--sc-display); }
        .patent .section-eyebrow { -webkit-text-fill-color: transparent; }

        .patent-number {
            font-family: var(--sc-display);
            font-weight: 700;
            font-size: clamp(2.6rem, 6vw, 4rem);
            letter-spacing: -0.02em;
        }

        .patent-number a {
            background: var(--sc-grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
        }

        .patent-date {
            font-family: 'Onest', sans-serif;
            letter-spacing: 0.04em;
            color: #b9e8ef;
        }

        .patent-image {
            border-radius: 18px;
            box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(34, 211, 238, 0.18);
        }

        /* ---------------- GALLERY ---------------- */
        .gallery { background: #f4f8fb; }
        .gallery-grid { gap: 1.1rem; margin-top: 3.4rem; }

        .gallery-item {
            border-radius: 18px;
            box-shadow: 0 12px 30px rgba(15, 31, 51, 0.08);
        }

        .gallery-item::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 20, 38, 0.55), transparent 55%);
            opacity: 0;
            transition: opacity 0.35s ease;
        }

        .gallery-item::before {
            content: '⤢';
            position: absolute;
            z-index: 2;
            right: 14px;
            bottom: 12px;
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 11px;
            background: rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 1.1rem;
            opacity: 0;
            transform: translateY(8px);
            transition: opacity 0.35s ease, transform 0.35s ease;
        }

        .gallery-item:hover::after { opacity: 1; }
        .gallery-item:hover::before { opacity: 1; transform: translateY(0); }

        /* ---------------- VIDEOS ---------------- */
        .videos {
            background:
                radial-gradient(80% 70% at 100% 0%, rgba(6, 182, 212, 0.16) 0%, transparent 55%),
                linear-gradient(160deg, #0b1426 0%, #0f1f33 55%, #060b16 100%);
        }

        .videos::before { opacity: 0.5; }
        .videos .section-title { font-family: var(--sc-display); color: #fff; }
        .videos .section-subtitle { color: #b9e8ef; }

        .video-wrapper {
            border-radius: 20px;
            box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(34, 211, 238, 0.16);
        }

        .video-btn.primary { background: var(--sc-grad); color: #06283a; }

        /* ---------------- CONTACT ---------------- */
        .contact {
            background:
                radial-gradient(70% 60% at 15% 0%, rgba(74, 222, 128, 0.06) 0%, transparent 55%),
                #f4f8fb;
        }

        .contact .section-title { color: #0f1f33; }

        .contact-info {
            border: 1px solid #e4ecf3;
            border-radius: 24px;
            box-shadow: 0 24px 60px rgba(15, 31, 51, 0.1);
            padding: 2.6rem 3.2rem;
            position: relative;
            overflow: hidden;
        }

        .contact-info::before {
            content: '';
            position: absolute;
            inset: 0 0 auto 0;
            height: 4px;
            background: var(--sc-grad);
        }

        .contact-name {
            font-family: var(--sc-display);
            font-weight: 600;
            color: #0f1f33;
        }

        .contact-link { background: var(--sc-grad); color: #06283a; }
        .contact-link:hover { box-shadow: 0 12px 30px rgba(6, 182, 212, 0.4); }

        /* section reveal */
        .section-head { text-align: center; max-width: 760px; margin: 0 auto; }

        @media (max-width: 760px) {
            section { padding: 4rem 0; }
            .contact-info { padding: 2rem 1.4rem; }
        }

/* ============================================================
   SHARED PAGE HELPERS — appended after the index.html design
   system above. These give secondary pages (cases hub, case-*,
   presentations, team) the same chrome + section rhythm as the
   home page without cloning the animated hero canvas.
   Loaded LAST so it wins over any page-local / cases.css rules
   for the shared classes.
   ============================================================ */

/* Promote big display headings to the brand display font, exactly
   like index (.section-title / .hero-title use Unbounded; card
   titles h3/h4 stay Onest). Pages that author bare <h1>/<h2>
   (cases.css-based pages) inherit the Unbounded look here. */
h1,
h2 {
    font-family: var(--sc-display);
}

/* ---------------- DARK PAGE HERO (no canvas) ---------------- */
.page-hero {
    position: relative;
    overflow: hidden;
    padding: 9.5rem 0 4.5rem;
    color: var(--sc-ink);
    background:
        radial-gradient(120% 90% at 85% -10%, rgba(6, 182, 212, 0.22) 0%, transparent 55%),
        radial-gradient(90% 80% at 0% 110%, rgba(74, 222, 128, 0.16) 0%, transparent 55%),
        linear-gradient(160deg, var(--sc-bg) 0%, var(--sc-bg-2) 55%, #060b16 100%);
    border-bottom: 1px solid rgba(34, 211, 238, 0.12);
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(148, 163, 184, 0.05) 1px, transparent 1px) 0 0 / 100% 64px,
        linear-gradient(90deg, rgba(148, 163, 184, 0.05) 1px, transparent 1px) 0 0 / 64px 100%;
    -webkit-mask-image: radial-gradient(120% 90% at 50% 20%, #000 30%, transparent 80%);
    mask-image: radial-gradient(120% 90% at 50% 20%, #000 30%, transparent 80%);
    pointer-events: none;
    opacity: 0.9;
}

.page-hero .container,
.page-hero .wrap,
.page-hero__inner {
    position: relative;
    z-index: 2;
}

.page-hero__inner {
    max-width: 920px;
}

.page-hero .breadcrumb,
.page-hero__crumb {
    font-family: 'Onest', sans-serif;
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    color: var(--sc-muted);
    margin-bottom: 1.4rem;
}

.page-hero .breadcrumb a,
.page-hero__crumb a {
    color: var(--sc-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.page-hero .breadcrumb a:hover,
.page-hero__crumb a:hover {
    color: #22d3ee;
}

.page-hero h1,
.page-hero__title {
    font-family: var(--sc-display);
    font-weight: 700;
    font-size: clamp(2.4rem, 5.6vw, 4.4rem);
    line-height: 1.0;
    letter-spacing: -0.03em;
    color: #fff;
    margin: 0 0 1.4rem;
    text-wrap: balance;
}

/* gradient highlight inside a hero title: <em> or .grad */
.page-hero h1 em,
.page-hero__title em,
.page-hero__title .grad {
    font-style: normal;
    background: var(--sc-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-hero__lead,
.page-hero p.lead {
    font-family: 'Onest', sans-serif;
    font-size: clamp(1.05rem, 1.6vw, 1.25rem);
    line-height: 1.65;
    color: var(--sc-muted);
    max-width: 660px;
    margin: 0 0 2.2rem;
}

.page-hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ---------------- GENERIC SECTION WRAPPERS ---------------- */
.section {
    position: relative;
    padding: 6rem 0;
}

.section--light {
    background:
        radial-gradient(70% 60% at 12% 0%, rgba(74, 222, 128, 0.06) 0%, transparent 55%),
        radial-gradient(60% 60% at 100% 100%, rgba(6, 182, 212, 0.07) 0%, transparent 55%),
        #f4f8fb;
}

.section--white {
    background: #fff;
}

.section--dark {
    color: var(--sc-ink);
    background:
        radial-gradient(90% 70% at 80% -10%, rgba(6, 182, 212, 0.2) 0%, transparent 55%),
        radial-gradient(70% 70% at 0% 110%, rgba(74, 222, 128, 0.12) 0%, transparent 55%),
        linear-gradient(160deg, #0b1426 0%, #0f1f33 60%, #060b16 100%);
    border-top: 1px solid rgba(34, 211, 238, 0.12);
    border-bottom: 1px solid rgba(34, 211, 238, 0.12);
}

.section--dark .section-title {
    color: #fff;
}

.section--dark .section-subtitle {
    color: var(--sc-muted);
}

/* Section head (eyebrow + title + subtitle) — reuses index
   .section-eyebrow / .section-title / .section-subtitle */
.section__head {
    max-width: 760px;
    margin: 0 auto 3.2rem;
    text-align: center;
}

.section__head--left {
    margin-left: 0;
    text-align: left;
}

.section__head--left .section-eyebrow,
.section__head--left .section-title {
    text-align: left;
}

/* ---------------- SCROLL FADE-IN (JS observer adds .visible) ---------------- */
.fade-in {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .fade-in {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ---------------- DARK CTA BAND ---------------- */
.cta-band {
    position: relative;
    overflow: hidden;
    border-radius: 28px;
    padding: 3rem 3.2rem;
    background:
        radial-gradient(80% 140% at 100% 0%, rgba(6, 182, 212, 0.22) 0%, transparent 55%),
        linear-gradient(135deg, #0b1426 0%, #0f1f33 100%);
    border: 1px solid rgba(34, 211, 238, 0.16);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.cta-band__title {
    font-family: var(--sc-display);
    font-weight: 600;
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    color: #fff;
    letter-spacing: -0.02em;
    margin-bottom: 0.6rem;
}

.cta-band__text {
    font-family: 'Onest', sans-serif;
    color: var(--sc-muted);
    max-width: 52ch;
    line-height: 1.6;
}

.cta-band__actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    flex-shrink: 0;
}

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 768px) {
    .page-hero {
        padding: 8rem 0 3.5rem;
    }

    .section {
        padding: 4.5rem 0;
    }

    .cta-band {
        padding: 2.2rem 1.6rem;
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
}

/* ---------------- ACTIVE NAV ITEM (current page) ---------------- */
.nav-links > li > a[aria-current="page"] {
    color: #0f172a;
}

.nav-links > li > a[aria-current="page"]::after {
    width: calc(100% - 1.9rem);
    left: 0.95rem;
}

.nav-overlay__links a[aria-current="page"] {
    background: var(--sc-grad);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ============================================================
   SolarChain chat widget — brand the third-party launcher with the
   logo mark. The widget injects its own <style> last, so we override
   with !important. NOTE: url() here resolves relative to assets/,
   so logo paths are "img/…" (not "assets/img/…").
   ============================================================ */
#scw-btn:not(.scw-active) .scw-ic-open { opacity: 0 !important; }
#scw-btn:not(.scw-active)::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 1;
    /* gold mark sits on a dark round backing for contrast,
       while the teal launcher plate stays visible at the edges */
    background:
        url("img/logo-mark.png") center / 60% no-repeat,
        radial-gradient(circle at 50% 50%, #0a1322 0 50%, rgba(10, 19, 34, 0) 72%);
    pointer-events: none;
}
#scw-panel .scw-av svg { display: none !important; }
#scw-panel .scw-av::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 2;
    /* same dark round backing as the launcher, so the gold mark pops */
    background:
        url("img/logo-mark.png") center / 74% no-repeat,
        radial-gradient(circle at 50% 50%, #0a1322 0 54%, rgba(10, 19, 34, 0) 78%);
}
#scw-panel #scw-msgs {
    background-image:
        url("img/logo-watermark.png"),
        radial-gradient(90% 60% at 100% 0, rgba(6, 182, 212, 0.05) 0, transparent 55%) !important;
    background-repeat: no-repeat, no-repeat !important;
    background-position: center 20px, 100% 0 !important;
    background-size: 130px auto, auto !important;
    background-color: #f6f8fb !important;
}