:root { 
    --primary: #FF5500; 
    --secondary: #CCCCCC; 
    --bg: #0a0a0a; 
    --card: #151515; 
    --border: #2a2a2a; 
    --text: #eee; 
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { 
    background: var(--bg); 
    color: var(--text); 
    font-family: 'Segoe UI', sans-serif;
    position: relative;
    min-height: 100vh;
}

#hero {
    min-height: 100vh;
    min-height: 100dvh;
    position: relative;
    background: #d0d0d0;
    overflow-x: hidden;
    overflow-y: auto;
    padding-bottom: 60px;
}

#hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url('logo.jpg');
    background-repeat: no-repeat;
    background-position: center 40px;
    background-size: min(620px, 78vw) auto;
    mix-blend-mode: multiply;
    opacity: 1;
    z-index: 0;
    pointer-events: none;
    -webkit-mask-image: linear-gradient(to bottom, black 0%, black 72%, transparent 100%);
    mask-image: linear-gradient(to bottom, black 0%, black 72%, transparent 100%);
}

#hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 250px;
    background: linear-gradient(
        to bottom,
        rgba(17, 17, 17, 0) 0%,
        rgba(17, 17, 17, 0.013) 8.1%,
        rgba(17, 17, 17, 0.049) 15.5%,
        rgba(17, 17, 17, 0.104) 22.5%,
        rgba(17, 17, 17, 0.175) 29%,
        rgba(17, 17, 17, 0.259) 35.3%,
        rgba(17, 17, 17, 0.352) 41.2%,
        rgba(17, 17, 17, 0.45) 47.1%,
        rgba(17, 17, 17, 0.55) 52.9%,
        rgba(17, 17, 17, 0.648) 58.8%,
        rgba(17, 17, 17, 0.741) 64.7%,
        rgba(17, 17, 17, 0.825) 71%,
        rgba(17, 17, 17, 0.896) 77.5%,
        rgba(17, 17, 17, 0.951) 84.5%,
        rgba(17, 17, 17, 0.987) 91.9%,
        #111 100%
    );
    pointer-events: none;
    z-index: 1;
}

.container { max-width: 850px; margin: 0 auto; padding: 20px; position: relative; z-index: 2; }
.tool-container {
    z-index: 2;
    padding-top: clamp(340px, 52vh, 470px);
}

header { text-align: center; margin-bottom: 20px; }
.subtitle { display: none; }

.tab-system {
    display: flex;
    gap: 5px;
    margin-bottom: 15px;
    flex-wrap: wrap;
    padding: 10px;
    background: rgba(10, 10, 10, 0.76);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 14px;
    backdrop-filter: blur(4px);
}

.tab-btn { flex: 1; padding: 10px; background: var(--card); border: 1px solid var(--border); color: #666; cursor: pointer; border-radius: 8px; font-weight: bold; font-size: 11px; white-space: nowrap; transition: 0.3s; }
.tab-btn.active { background: var(--primary); color: #000; border-color: var(--primary); }
.tab-btn:disabled { opacity: 0.3; cursor: not-allowed; }

@keyframes softPulse {
    0% { box-shadow: 0 0 0 0 rgba(255, 85, 0, 0.4); border-color: var(--primary); color: var(--primary); }
    50% { box-shadow: 0 0 10px 0 rgba(255, 85, 0, 0.2); border-color: #ff7733; color: #fff; }
    100% { box-shadow: 0 0 0 0 rgba(255, 85, 0, 0.4); border-color: var(--primary); color: var(--primary); }
}

.pulse-next { animation: softPulse 2.5s infinite ease-in-out; border: 1px solid var(--primary); opacity: 1 !important; }
.hidden { display: none !important; }
.selection-panel { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; background: rgba(21,21,21,0.96); padding: 20px; border-radius: 12px; border: 1px solid var(--border); }
select { width: 100%; padding: 10px; background: #222; border: 1px solid #333; color: white; border-radius: 6px; }

.tuning-card { background: #1a1a1a; border: 1px solid #333; padding: 15px; border-radius: 8px; cursor: pointer; transition: 0.2s; position: relative; }
.tuning-card:hover { border-color: #555; }
.tuning-card.selected { border-color: var(--primary); background: #221a1a; box-shadow: 0 0 10px rgba(255,85,0,0.1); }
.tuning-card h4 { margin-bottom: 5px; color: #fff; }
.tuning-card .specs { font-size: 12px; color: #aaa; }
.tuning-card .badge { position: absolute; top: 10px; right: 10px; background: #333; padding: 2px 6px; font-size: 10px; border-radius: 4px; }
.tuning-card.selected .badge { background: var(--primary); color: #000; font-weight: bold; }

.action-btn { width: 100%; padding: 15px; background: #333; color: white; border: none; border-radius: 5px; cursor: pointer; font-weight: bold; transition: 0.3s; }
.action-btn:hover { background: #444; }
.action-btn:disabled { cursor: not-allowed; opacity: 0.5; }

.start-race-btn { width: 100%; padding: 15px; background: var(--primary); color: #000; border: none; border-radius: 8px; font-weight: bold; cursor: pointer; font-size: 16px; }
.start-race-btn:hover { background: #ff7733; }

.scroll-down {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: #fff;
    animation: bounce 2s infinite;
    cursor: pointer;
    text-decoration: none;
    z-index: 10;
    width: 100%;
}
.scroll-down span { font-size: 10px; display: block; margin-bottom: 5px; letter-spacing: 1px; font-weight: bold; }
.scroll-down i { font-size: 20px; color: var(--primary); }

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateX(-50%) translateY(0);}
    40% {transform: translateX(-50%) translateY(-10px);}
    60% {transform: translateX(-50%) translateY(-5px);}
}

section { padding: 60px 20px; }
#why-us { background: #111; border-top: 1px solid #222; }
#faq { background: #0a0a0a; border-top: 1px solid #222; }

h2 { text-align: center; color: var(--primary); margin-bottom: 40px; font-size: 24px; letter-spacing: 1px; }

.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.feature-card { text-align: center; padding: 20px; background: #1a1a1a; border-radius: 10px; border: 1px solid #222; transition: 0.3s; }
.feature-card:hover { transform: translateY(-5px); border-color: var(--primary); }
.feature-card i { font-size: 40px; color: var(--primary); margin-bottom: 20px; }
.feature-card h3 { color: #fff; margin-bottom: 10px; font-size: 18px; }
.feature-card p { color: #aaa; font-size: 14px; line-height: 1.6; }

.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item { margin-bottom: 30px; border-bottom: 1px solid #222; padding-bottom: 20px; }
.faq-item:last-child { border: none; }
.faq-item h4 { color: #fff; margin-bottom: 10px; font-size: 16px; }
.faq-item p { color: #999; font-size: 14px; line-height: 1.6; }

footer { background: #050505; border-top: 1px solid var(--primary); padding: 40px 20px; text-align: center; }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; margin-bottom: 30px; }
.contact-info h3 { color: var(--primary); margin-bottom: 10px; }
.social-links { margin-top: 20px; }
.social-links a { color: #fff; font-size: 24px; margin: 0 10px; transition: 0.3s; }
.social-links a:hover { color: var(--primary); }
.contact-details p { margin: 10px 0; color: #aaa; font-size: 14px; }
.contact-details i { color: var(--primary); margin-right: 10px; }
.copyright { color: #444; font-size: 12px; margin-top: 20px; border-top: 1px solid #111; padding-top: 20px; }

.gauge-wrapper { display: flex; justify-content: center; align-items: center; opacity: 0.9; margin: 0; }
.gauge-container { width: 110px; height: 55px; position: relative; overflow: hidden; text-align: center; }
.gauge-face { position: absolute; top: 0; left: 0; width: 100%; height: 200%; background: radial-gradient(circle at center, #0a0a0a 60%, #151515 65%, #222 70%); border-radius: 50%; border: 1px solid #333; }
.gauge-face::after { content: ''; position: absolute; top: 5%; left: 5%; width: 90%; height: 90%; border-radius: 50%; background: conic-gradient(from 270deg, transparent 0deg, transparent 45deg, #444 45.5deg, transparent 46deg, transparent 90deg, #444 90.5deg, transparent 91deg, transparent 135deg, #444 135.5deg, transparent 136deg, transparent 180deg, #444 180.5deg, transparent 181deg, transparent 225deg, #444 225.5deg, transparent 226deg, transparent 270deg); opacity: 0.2; }
.gauge-redline { position: absolute; top: 0; left: 0; width: 100%; height: 200%; border-radius: 50%; background: conic-gradient(from 90deg, transparent 0%, transparent 90%, #c0392b 90%, #c0392b 100%); opacity: 0.6; mask-image: radial-gradient(transparent 65%, black 66%); -webkit-mask-image: radial-gradient(transparent 65%, black 66%); }
.gauge-needle { position: absolute; bottom: 0; left: 50%; width: 2px; height: 90%; background: var(--primary); transform-origin: bottom center; transform: translateX(-50%) rotate(-90deg); transition: transform 0.1s linear; z-index: 10; border-radius: 50% 50% 0 0; }
.gauge-cap { position: absolute; bottom: -6px; left: 50%; width: 10px; height: 10px; background: #333; border: 1px solid #222; border-radius: 50%; transform: translateX(-50%); z-index: 11; }
.gauge-value { position: absolute; bottom: 12px; width: 100%; text-align: center; font-size: 12px; font-weight: bold; color: #ccc; font-family: monospace; z-index: 5; }

@media (max-width: 768px) {
    #hero {
        padding-bottom: 80px;
    }

    #hero::before {
        background-size: min(320px, 82vw) auto;
        background-position: center 12px;
    }

    .tool-container {
        padding-top: clamp(250px, 43vh, 340px);
    }

    .tab-system {
        padding: 8px;
    }

    .tab-btn {
        font-size: 10px;
        padding: 9px 8px;
    }
}


.step-intro {
    margin: 0 0 18px;
    padding: 16px 18px;
    background: rgba(10, 10, 10, 0.88);
    border: 1px solid #262626;
    border-radius: 12px;
}

.step-label {
    display: inline-block;
    margin-bottom: 8px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(255, 102, 0, 0.14);
    border: 1px solid rgba(255, 102, 0, 0.35);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.step-intro h3 {
    margin: 0 0 8px;
    color: #fff;
    font-size: 1.15rem;
}

.step-intro p {
    margin: 0;
    color: #bdbdbd;
    line-height: 1.5;
}

.cta-panel {
    margin-top: 22px;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #2a2a2a;
    background: linear-gradient(180deg, rgba(255, 102, 0, 0.08), rgba(17, 17, 17, 0.96));
}

.cta-panel h3 {
    margin: 0 0 8px;
    color: #fff;
}

.cta-panel p {
    margin: 0 0 16px;
    color: #c8c8c8;
    line-height: 1.5;
}

.cta-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 180px;
    padding: 12px 18px;
    border-radius: 10px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.cta-btn:hover {
    transform: translateY(-1px);
}

.cta-btn.primary {
    background: var(--primary);
    color: #111;
}

.cta-btn.secondary {
    background: transparent;
    color: #fff;
    border: 1px solid #3a3a3a;
}

.footer-book-btn {
    margin-top: 14px;
}

@media (max-width: 768px) {
    .cta-actions {
        flex-direction: column;
    }

    .cta-btn {
        width: 100%;
    }
}



/* ===== DYNO REPORT STYLE ===== */
.dyno-report-layout {
    max-width: 980px;
    margin: 0 auto;
}
.dyno-report-toolbar {
    text-align: center;
    color: #8f96a3;
    font-size: 15px;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}
.dyno-report-sheet {
    background: #fff;
    color: #0f172a;
    border-radius: 10px;
    border: 1px solid #d9dee8;
    box-shadow: 0 16px 35px rgba(0,0,0,0.24);
    padding: 26px 24px 18px;
}
.dyno-report-header {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: flex-start;
}
.dyno-report-logo-wrap {
    width: 94px;
    min-width: 94px;
}
.dyno-report-logo {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}
.dyno-report-branding {
    text-align: right;
}
.dyno-report-brand {
    font-weight: 800;
    font-size: 28px;
    letter-spacing: 1px;
    color: #101828;
}
.dyno-report-subbrand {
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 2px;
    color: #1f2937;
    margin-top: 2px;
}
.dyno-report-note {
    color: #667085;
    font-size: 12px;
    margin-top: 6px;
}
.dyno-report-carname {
    margin: 18px 0 14px;
    font-size: 15px;
    color: #344054;
}
.dyno-top-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 18px;
}
.dyno-top-card {
    border: 1px solid #e4e7ec;
    background: #fafafa;
    border-radius: 6px;
    padding: 10px 12px;
}
.dyno-top-label {
    display: block;
    font-size: 11px;
    color: #667085;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.dyno-top-card strong {
    font-size: 15px;
    color: #111827;
}
.dyno-chart-panel {
    position: relative;
    padding: 14px 0 8px;
}
.dyno-grid {
    display: grid;
    grid-template-columns: 42px 1fr 42px;
    align-items: stretch;
    gap: 8px;
}
.dyno-left-scale,
.dyno-right-scale {
    height: 320px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 12px;
    color: #475467;
}
.dyno-right-scale {
    text-align: right;
}
.dyno-axis-title {
    position: absolute;
    top: 50%;
    transform: rotate(-90deg) translateY(-50%);
    transform-origin: left top;
    font-size: 13px;
    color: #344054;
    font-weight: 600;
}
.dyno-axis-left {
    left: -8px;
}
.dyno-axis-right {
    right: -80px;
    transform: rotate(90deg) translateY(-50%);
    transform-origin: right top;
}
.dyno-plot-wrap {
    position: relative;
    padding-bottom: 44px;
    min-height: 320px;
}
.dyno-report-graph {
    width: 100%;
    height: 320px;
    overflow: visible;
    border-left: 1px solid #aeb5c2;
    border-bottom: 1px solid #aeb5c2;
    background: #fff;
}
.dyno-watermark {
    font-size: 42px;
    font-weight: 800;
    fill: rgba(15, 23, 42, 0.07);
    letter-spacing: 2px;
}
.dyno-bottom-scale {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 20px;
    display: flex;
    justify-content: space-between;
    color: #475467;
    font-size: 12px;
}
.dyno-axis-bottom-title {
    position: absolute;
    left: 50%;
    bottom: -2px;
    transform: translateX(-50%);
    color: #344054;
    font-size: 13px;
    font-weight: 600;
}
.dyno-peak-tag {
    position: absolute;
    font-size: 13px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(255,255,255,0.86);
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transform: translate(-50%, -50%);
    pointer-events: none;
    white-space: nowrap;
}
.dyno-peak-tag-stock {
    color: #8a8f98;
    background: rgba(248,250,252,0.96);
    border: 1px solid rgba(148,163,184,0.28);
}
.dyno-peak-tag-stock-nm,
.dyno-peak-tag-stock-hp,
.dyno-peak-tag-nm,
.dyno-peak-tag-hp {
    left: -9999px;
    top: -9999px;
}
.dyno-peak-tag-nm {
    color: #244fba;
}
.dyno-peak-tag-hp {
    color: #8c1f1f;
}
.dyno-summary-table {
    margin-top: 10px;
    display: grid;
    grid-template-columns: repeat(9, minmax(0, 1fr));
    border-top: 1px solid #d0d5dd;
    border-left: 1px solid #d0d5dd;
}
.dyno-summary-table > div {
    border-right: 1px solid #d0d5dd;
    border-bottom: 1px solid #d0d5dd;
    padding: 8px 6px;
    font-size: 11px;
    text-align: center;
    color: #344054;
    line-height: 1.35;
}
.dyno-summary-head {
    background: #f8fafc;
    font-weight: 700;
    color: #101828;
}
.dyno-report-footer {
    margin-top: 10px;
    color: #667085;
    font-size: 12px;
}
.dyno-report-actions {
    margin-top: 16px;
}
.dyno-current-values {
    color: #d0d5dd;
    font-size: 13px;
    margin-bottom: 8px;
}
.dyno-current-values strong {
    color: #fff;
}
@media (max-width: 900px) {
    .dyno-report-sheet {
        padding: 18px 14px 14px;
    }
    .dyno-top-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .dyno-grid {
        grid-template-columns: 28px 1fr 28px;
    }
    .dyno-left-scale, .dyno-right-scale {
        height: 250px;
        font-size: 10px;
    }
    .dyno-report-graph {
        height: 250px;
    }
    .dyno-plot-wrap {
        min-height: 250px;
        padding-bottom: 36px;
    }
    .dyno-axis-title {
        display: none;
    }
    .dyno-summary-table {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}
@media (max-width: 640px) {
    .dyno-report-header {
        flex-direction: column;
        align-items: center;
    }
    .dyno-report-branding {
        text-align: center;
    }
    .dyno-top-stats {
        grid-template-columns: 1fr;
    }
}


#hpLineStock, #nmLineStock { opacity: 0.38; }
#hpLineStock { stroke: #d79a9a; }
#nmLineStock { stroke: #95a8dd; }