:root {
            --teal-400:#2dd4bf;--teal-500:#14b8a6;--teal-600:#0d9488;--teal-700:#0f766e;--teal-900:#134e4a;
            --slate-50:#f8fafc;--slate-100:#f1f5f9;--slate-200:#e2e8f0;--slate-300:#cbd5e1;
            --slate-400:#94a3b8;--slate-500:#64748b;--slate-600:#475569;--slate-700:#334155;
            --slate-800:#1e293b;--slate-900:#0f172a;
            --amber-400:#fbbf24;--amber-500:#f59e0b;
            --emerald-400:#34d399;--emerald-500:#10b981;--emerald-600:#059669;
            --purple-500:#8b5cf6;--purple-600:#7c3aed;
            --rose-500:#f43f5e;--blue-400:#60a5fa;--blue-500:#3b82f6;
        }
        *{box-sizing:border-box;margin:0;padding:0}
        body{font-family:'Manrope',sans-serif;background:var(--slate-900);color:#fff;min-height:100vh;padding-top:80px}

        /* ─── HERO ─── */
        .hiw-hero{
            background:linear-gradient(135deg,var(--teal-900) 0%,var(--slate-900) 70%);
            padding:64px 24px 48px;text-align:center;position:relative;overflow:hidden;
            border-bottom:1px solid rgba(255,255,255,.07);
        }
        .hiw-hero::before{
            content:'';position:absolute;inset:0;
            background:radial-gradient(circle at 30% 50%,rgba(20,184,166,.2) 0%,transparent 60%),
                        radial-gradient(circle at 80% 30%,rgba(124,58,237,.1) 0%,transparent 50%);
        }
        .hiw-badge{
            display:inline-flex;align-items:center;gap:8px;
            background:rgba(20,184,166,.15);border:1px solid rgba(20,184,166,.3);
            color:var(--teal-400);font-size:13px;font-weight:600;
            padding:6px 18px;border-radius:999px;margin-bottom:20px;
        }
        .hiw-hero h1{font-size:clamp(28px,5vw,52px);font-weight:900;line-height:1.1;margin-bottom:14px}
        .hiw-hero h1 span{color:var(--teal-400)}
        .hiw-hero p{color:var(--slate-400);font-size:15px;max-width:560px;margin:0 auto 32px}

        /* ─── INPUT PANEL ─── */
        .sim-panel{
            max-width:860px;margin:0 auto;padding:0 20px;
        }
        .input-card{
            background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);
            border-radius:20px;padding:28px;margin:-24px auto 40px;
            backdrop-filter:blur(8px);position:relative;z-index:2;
        }
        .input-card-title{font-size:16px;font-weight:800;color:#fff;margin-bottom:20px;display:flex;align-items:center;gap:10px}
        .input-card-title .material-symbols-outlined{color:var(--teal-400);font-size:22px}
        .input-fields{display:grid;grid-template-columns:1fr 1fr 1fr auto;gap:12px;align-items:end}
        @media(max-width:640px){.input-fields{grid-template-columns:1fr 1fr}}
        .inp-group label{font-size:12px;font-weight:700;color:var(--slate-400);display:block;margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}
        .inp-wrap{display:flex;align-items:center;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:10px;overflow:hidden}
        .inp-prefix{padding:0 10px;font-size:12px;color:var(--slate-400);white-space:nowrap;border-right:1px solid rgba(255,255,255,.1)}
        .sim-input{
            flex:1;background:transparent;border:none;color:#fff;
            font-family:'Manrope',sans-serif;font-size:15px;font-weight:700;
            padding:12px 12px;outline:none;
        }
        .counter-ctrl{display:flex;align-items:center}
        .cc-btn{width:36px;height:44px;background:transparent;border:none;color:var(--slate-400);font-size:18px;cursor:pointer;transition:.15s}
        .cc-btn:hover{color:var(--teal-400)}
        
        /* Hide number spinner */
        input[type="number"]::-webkit-inner-spin-button, 
        input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; appearance: none; margin: 0; }
        input[type="number"] { -moz-appearance: textfield; appearance: textfield; }

        .run-btn{
            display:flex;align-items:center;gap:8px;
            padding:12px 24px;border:none;border-radius:12px;
            background:linear-gradient(135deg,var(--teal-500),var(--teal-700));
            color:#fff;font-family:'Manrope',sans-serif;font-size:14px;font-weight:800;
            cursor:pointer;transition:all .2s;white-space:nowrap;
            box-shadow:0 4px 16px rgba(13,148,136,.4);
        }
        .run-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 24px rgba(13,148,136,.5)}
        .run-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
        .run-btn .material-symbols-outlined{font-size:20px}

        /* ─── CONTENT WRAPPER ─── */
        .hiw-content{max-width:1100px;margin:0 auto;padding:0 20px 80px}

        /* ─── SECTION CARD ─── */
        .viz-section{
            margin-bottom:32px;background:rgba(255,255,255,.03);
            border:1px solid rgba(255,255,255,.08);border-radius:20px;overflow:hidden;
        }
        .viz-section-head{
            padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.06);
            display:flex;align-items:center;gap:14px;cursor:pointer;
            transition:background .2s;
        }
        .viz-section-head:hover{background:rgba(255,255,255,.03)}
        .viz-step-num{
            width:36px;height:36px;border-radius:10px;flex-shrink:0;
            display:flex;align-items:center;justify-content:center;
            font-size:14px;font-weight:900;
        }
        .viz-step-title{font-size:16px;font-weight:800;color:#fff}
        .viz-step-sub{font-size:12px;color:var(--slate-400);margin-top:2px}
        .viz-section-chevron{margin-left:auto;color:var(--slate-500);transition:transform .3s}
        .viz-section.open .viz-section-chevron{transform:rotate(180deg)}
        .viz-body{padding:24px;display:none}
        .viz-section.open .viz-body{display:block}

        /* ─── PLACEHOLDER ─── */
        .placeholder-box{
            text-align:center;padding:40px 24px;color:var(--slate-500);
        }
        .placeholder-box .material-symbols-outlined{font-size:48px;color:var(--slate-700);display:block;margin-bottom:12px}
        .placeholder-box p{font-size:14px}

        /* ─── LOADING ─── */
        .global-loading{
            display:none;flex-direction:column;align-items:center;gap:16px;
            padding:60px 24px;text-align:center;
        }
        .global-loading.visible{display:flex}
        .loading-ring{width:60px;height:60px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--teal-500);border-radius:50%;animation:spin .8s linear infinite}
        @keyframes spin{to{transform:rotate(360deg)}}
        .loading-steps-list{display:flex;flex-direction:column;gap:8px;width:100%;max-width:340px}
        .ls{display:flex;align-items:center;gap:10px;padding:9px 14px;border-radius:9px;background:rgba(255,255,255,.04);font-size:13px;color:var(--slate-400);transition:all .3s}
        .ls.active{background:rgba(20,184,166,.1);color:var(--teal-400);border:1px solid rgba(20,184,166,.2)}
        .ls .material-symbols-outlined{font-size:17px}

        /* ─── STATS GRID ─── */
        .stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        @media(max-width:600px){.stats-grid{grid-template-columns:1fr}}
        .stat-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:18px}
        .stat-cat{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px}
        .stat-cat.wisata{color:var(--emerald-400)}
        .stat-cat.hotel{color:var(--blue-400)}
        .stat-cat.kuliner{color:var(--amber-400)}
        .stat-row{display:flex;justify-content:space-between;font-size:13px;padding:4px 0;border-bottom:1px solid rgba(255,255,255,.05)}
        .stat-row:last-child{border-bottom:none}
        .stat-label{color:var(--slate-400)}
        .stat-val{font-weight:700;color:#fff}

        /* ─── XBI TABLE ─── */
        .xbi-tables{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        @media(max-width:700px){.xbi-tables{grid-template-columns:1fr}}
        .xbi-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:14px;overflow:hidden}
        .xbi-head{padding:12px 16px;font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.5px}
        .xbi-head.wisata{background:rgba(52,211,153,.1);color:var(--emerald-400)}
        .xbi-head.hotel{background:rgba(96,165,250,.1);color:var(--blue-400)}
        .xbi-head.kuliner{background:rgba(251,191,36,.1);color:var(--amber-400)}
        table.xbi-tbl{width:100%;border-collapse:collapse}
        .xbi-tbl th{font-size:11px;font-weight:700;color:var(--slate-500);padding:8px 14px;text-align:left;border-bottom:1px solid rgba(255,255,255,.06)}
        .xbi-tbl td{font-size:13px;padding:8px 14px;border-bottom:1px solid rgba(255,255,255,.04)}
        .xbi-tbl tr:last-child td{border-bottom:none}
        .xbi-tbl tr.optimal td{background:rgba(20,184,166,.08);color:var(--teal-400);font-weight:700}
        .badge-opt{background:var(--teal-700);color:var(--teal-300);font-size:10px;font-weight:700;padding:2px 8px;border-radius:999px;margin-left:6px}

        /* ─── RATIO TABLE ─── */
        .ratio-section{display:flex;flex-direction:column;gap:24px}
        .ratio-cat-title{font-size:14px;font-weight:800;margin-bottom:12px}
        .ratio-cat-title.wisata{color:var(--emerald-400)}
        .ratio-cat-title.hotel{color:var(--blue-400)}
        .ratio-cat-title.kuliner{color:var(--amber-400)}
        table.ratio-tbl{width:100%;border-collapse:collapse;font-size:13px}
        .ratio-tbl th{color:var(--slate-400);font-size:11px;font-weight:700;text-transform:uppercase;padding:8px 14px;text-align:left;border-bottom:1px solid rgba(255,255,255,.07)}
        .ratio-tbl td{padding:9px 14px;border-bottom:1px solid rgba(255,255,255,.04);vertical-align:middle}
        .ratio-tbl tr:last-child td{border-bottom:none}
        .ratio-tbl tr.best-scheme td{background:rgba(20,184,166,.08);color:var(--teal-300)}
        .scheme-badge{display:inline-block;width:28px;height:28px;border-radius:8px;background:rgba(255,255,255,.08);text-align:center;line-height:28px;font-weight:800;font-size:13px}
        .best-scheme .scheme-badge{background:var(--teal-700);color:var(--teal-300)}
        .bar-cell{display:flex;align-items:center;gap:8px}
        .bar-bg{flex:1;height:6px;background:rgba(255,255,255,.07);border-radius:999px;overflow:hidden}
        .bar-fill{height:100%;background:var(--teal-500);border-radius:999px;transition:width .8s}

        /* ─── CLUSTER RESULT ─── */
        .cluster-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
        @media(max-width:600px){.cluster-grid{grid-template-columns:1fr}}
        .cluster-card{border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.08)}
        .cluster-head{padding:14px 18px;font-size:13px;font-weight:800;display:flex;justify-content:space-between;align-items:center}
        .cluster-head.wisata{background:rgba(52,211,153,.12);color:var(--emerald-400)}
        .cluster-head.hotel{background:rgba(96,165,250,.12);color:var(--blue-400)}
        .cluster-head.kuliner{background:rgba(251,191,36,.12);color:var(--amber-400)}
        .cluster-body{background:rgba(255,255,255,.03);padding:16px 18px;display:flex;flex-direction:column;gap:12px}
        .cluster-tier{display:flex;justify-content:space-between;align-items:center;font-size:13px}
        .tier-label{display:flex;align-items:center;gap:8px}
        .tier-dot{width:10px;height:10px;border-radius:50%}
        .tier-dot.hemat{background:var(--emerald-500)}
        .tier-dot.balanced{background:var(--blue-500)}
        .tier-dot.premium{background:var(--amber-500)}
        .tier-cnt{font-size:11px;color:var(--slate-400)}
        .tier-price{font-weight:800;color:#fff}
        .cluster-bar{display:flex;height:8px;border-radius:999px;overflow:hidden;gap:2px}
        .cluster-bar-seg{transition:flex .8s}
        .cluster-bar-seg.hemat{background:var(--emerald-500)}
        .cluster-bar-seg.balanced{background:var(--blue-500)}
        .cluster-bar-seg.premium{background:var(--amber-500)}

        /* ─── PACKAGE RESULTS ─── */
        .pkgs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
        .pkg-card{border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.04)}
        .pkg-banner{padding:12px 18px;display:flex;justify-content:space-between;align-items:center}
        .pkg-banner.hemat{background:linear-gradient(135deg,rgba(52,211,153,.2),rgba(16,185,129,.1))}
        .pkg-banner.balanced{background:linear-gradient(135deg,rgba(96,165,250,.2),rgba(59,130,246,.1))}
        .pkg-banner.premium{background:linear-gradient(135deg,rgba(251,191,36,.2),rgba(245,158,11,.1))}
        .pkg-badge{font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;padding:4px 12px;border-radius:999px}
        .pkg-badge.hemat{background:var(--emerald-500);color:#fff}
        .pkg-badge.balanced{background:var(--blue-500);color:#fff}
        .pkg-badge.premium{background:var(--amber-500);color:#fff}
        .pkg-body{padding:18px}
        .pkg-row{display:flex;gap:10px;margin-bottom:14px;align-items:flex-start}
        .pkg-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
        .pkg-icon.hotel{background:rgba(96,165,250,.15)}
        .pkg-icon.wisata{background:rgba(52,211,153,.15)}
        .pkg-icon.kuliner{background:rgba(251,191,36,.15)}
        .pkg-icon .material-symbols-outlined{font-size:16px}
        .pkg-icon.hotel .material-symbols-outlined{color:var(--blue-400)}
        .pkg-icon.wisata .material-symbols-outlined{color:var(--emerald-400)}
        .pkg-icon.kuliner .material-symbols-outlined{color:var(--amber-400)}
        .pkg-info-cat{font-size:10px;font-weight:700;color:var(--slate-500);text-transform:uppercase}
        .pkg-info-name{font-size:13px;font-weight:700;color:#fff;margin:2px 0}
        .pkg-info-price{font-size:13px;font-weight:800;color:var(--teal-400)}
        .pkg-total-bar{
            background:rgba(20,184,166,.1);border:1px solid rgba(20,184,166,.2);
            border-radius:12px;padding:14px;margin-top:4px;
            display:flex;justify-content:space-between;align-items:center;
        }
        .pkg-total-label{font-size:11px;color:var(--slate-400)}
        .pkg-total-val{font-size:20px;font-weight:900;color:var(--teal-400)}

        /* ─── CODE TERMINAL ─── */
        .terminal{
            background:#0d1117;border:1px solid rgba(255,255,255,.1);border-radius:12px;
            padding:20px;font-family:'JetBrains Mono',monospace;font-size:12px;
            color:#c9d1d9;overflow-x:auto;line-height:1.6;white-space:pre-wrap;
            max-height:320px;overflow-y:auto;
        }
        .terminal .kw{color:#ff7b72}
        .terminal .str{color:#a5d6ff}
        .terminal .num{color:#79c0ff}
        .terminal .comment{color:#8b949e}
        .terminal .fn{color:#d2a8ff}
        .terminal .key{color:#ffa657}

        /* ─── SECTION COLORS ─── */
        .s1 .viz-step-num{background:rgba(20,184,166,.15);color:var(--teal-400)}
        .s2 .viz-step-num{background:rgba(96,165,250,.15);color:var(--blue-400)}
        .s3 .viz-step-num{background:rgba(139,92,246,.15);color:var(--purple-500)}
        .s4 .viz-step-num{background:rgba(251,191,36,.15);color:var(--amber-400)}
        .s5 .viz-step-num{background:rgba(52,211,153,.15);color:var(--emerald-400)}

        /* ─── MISC ─── */
        .section-divider{display:flex;align-items:center;gap:12px;margin-bottom:24px}
        .section-divider-line{flex:1;height:1px;background:rgba(255,255,255,.07)}
        .section-divider-label{font-size:12px;font-weight:700;color:var(--slate-500);text-transform:uppercase;letter-spacing:.5px}

        .info-box{
            background:rgba(20,184,166,.06);border:1px solid rgba(20,184,166,.2);
            border-radius:10px;padding:14px 18px;font-size:13px;color:var(--teal-300);
            display:flex;gap:10px;align-items:flex-start;margin-bottom:20px;
        }
        .info-box .material-symbols-outlined{font-size:18px;flex-shrink:0;margin-top:1px}

        /* ─── TECH TIP CARD (CACHING EXPL) ─── */
        .tech-tip-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(20, 184, 166, 0.25);
            border-radius: 20px;
            padding: 28px;
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3), 0 0 20px rgba(20, 184, 166, 0.05);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            position: relative;
            z-index: 2;
            margin-bottom: 24px;
            transition: all 0.3s ease;
        }
        .tech-tip-card:hover {
            border-color: rgba(20, 184, 166, 0.45);
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4), 0 0 30px rgba(20, 184, 166, 0.1);
            transform: translateY(-2px);
        }
        .tech-tip-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .tech-tip-header h3 {
            font-size: 18px;
            font-weight: 800;
            color: #ffffff;
            width: 100%;
            margin-top: 8px;
            font-family: 'Manrope', sans-serif;
        }
        @media (min-width: 480px) {
            .tech-tip-header h3 {
                width: auto;
                margin-top: 0;
            }
        }
        .tech-tip-icon {
            color: var(--amber-500);
            font-size: 26px;
        }
        .tech-tip-badge {
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.3);
            color: var(--amber-400);
            font-size: 10px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 1px;
            padding: 4px 12px;
            border-radius: 999px;
        }
        .tech-tip-text {
            font-size: 14px;
            line-height: 1.7;
            color: var(--slate-300);
        }
        .code-highlight {
            background: rgba(20, 184, 166, 0.12);
            color: var(--teal-400);
            padding: 2px 6px;
            border-radius: 6px;
            font-family: 'JetBrains Mono', monospace;
            font-size: 13px;
        }

        /* ─── RESPONSIVE / MOBILE OPTIMIZATIONS ─── */
        @media (max-width: 960px) {
            .xbi-tables {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cluster-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 70px;
            }
            .hiw-content {
                padding: 0 12px 60px;
            }
            .sim-panel {
                padding: 0 12px;
            }
            .xbi-tables {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 600px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .cluster-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .hiw-hero {
                padding: 48px 16px 36px;
            }
            .hiw-hero h1 {
                font-size: 32px !important;
            }
            .hiw-badge {
                padding: 4px 12px;
                font-size: 11px;
                margin-bottom: 16px;
            }
            .input-card {
                padding: 20px 16px;
                margin: -16px auto 32px;
                border-radius: 16px;
            }
            .input-fields {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .run-btn {
                width: 100%;
                justify-content: center;
                margin-top: 8px;
                padding: 14px;
            }
            .viz-section-head {
                padding: 14px 16px;
                gap: 10px;
            }
            .viz-body {
                padding: 16px;
            }
            .viz-step-num {
                width: 30px;
                height: 30px;
                font-size: 12px;
                border-radius: 8px;
            }
            .viz-step-title {
                font-size: 14px;
            }
            .viz-step-sub {
                font-size: 11px;
            }
            .tech-tip-card {
                padding: 18px 16px;
                border-radius: 16px;
            }
            .tech-tip-header h3 {
                font-size: 15px;
            }
            .tech-tip-text {
                font-size: 13px;
            }
        }

        /* ─── TABLE RESPONSIVENESS OVERRIDES ─── */
        .xbi-card {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        table.xbi-tbl {
            min-width: 280px;
        }
        table.ratio-tbl {
            display: block;
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            white-space: nowrap;
        }