/* ============================================================
   WHIR LANDING — Premium Brown + Gold
   ============================================================ */

   :root {
    --brown-950: #0c0705;
    --brown-900: #150c07;
    --brown-850: #1e120a;
    --brown-800: #2d1a0e;
    --brown-700: #442812;
    --brown-600: #5c3818;
    --brown-500: #7a4d22;
    --brown-400: #9e6832;
    --brown-300: #c48e4a;
    --brown-200: #d9ad6e;
    --brown-100: #f0d4a0;
    --brown-50:  #faf0dd;

    --gold: #d4a03c;
    --gold-light: #f0c860;
    --gold-bright: #ffe082;
    --gold-dim: #a67b25;
    --gold-glow: rgba(212, 160, 60, 0.35);

    --bg: var(--brown-950);
    --bg-alt: var(--brown-900);
    --bg-card: rgba(30, 18, 10, 0.65);
    --bg-glass: rgba(30, 18, 10, 0.45);
    --text: var(--brown-50);
    --text-2: var(--brown-200);
    --text-3: var(--brown-300);
    --accent: var(--gold);
    --border: rgba(212, 160, 60, 0.1);
    --border-h: rgba(212, 160, 60, 0.25);

    --font: 'Sora', system-ui, sans-serif;
    --mono: 'JetBrains Mono', monospace;
    --max-w: 1200px;
    --r: 20px;
    --r-sm: 12px;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    position: relative;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
h1, h2, h3, h4 { line-height: 1.15; font-weight: 700; }
em { font-style: normal; background: linear-gradient(135deg, var(--gold-light), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
strong { color: var(--gold-light); font-weight: 600; }

/* CANVAS */
#particles {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

/* CONTAINER */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 28px; }

/* SECTION */
.section { padding: 110px 0; position: relative; z-index: 1; }
.section-dark {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.section-header { text-align: center; max-width: 680px; margin: 0 auto 64px; }
.section-header--left { text-align: left; max-width: 440px; margin: 0; }
.section-header h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 14px; letter-spacing: -0.025em; }
.section-sub { color: var(--text-2); font-size: 1.02rem; }

/* TAG */
.tag {
    display: inline-block;
    font-family: var(--mono);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--gold);
    border: 1px solid var(--border-h);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 18px;
    background: rgba(212, 160, 60, 0.05);
    backdrop-filter: blur(4px);
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font);
    font-weight: 600;
    font-size: 0.92rem;
    padding: 15px 34px;
    border-radius: 100px;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: linear-gradient(135deg, var(--gold-light), var(--gold), var(--gold-dim));
    color: var(--brown-950);
    box-shadow: 0 4px 30px var(--gold-glow), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity 0.35s;
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover {
    box-shadow: 0 8px 40px rgba(212, 160, 60, 0.5);
    transform: translateY(-3px);
}
.btn-ghost {
    border: 1px solid var(--border-h);
    color: var(--text-2);
    background: var(--bg-glass);
    backdrop-filter: blur(8px);
}
.btn-ghost:hover {
    border-color: var(--gold);
    color: var(--gold-light);
    background: rgba(212, 160, 60, 0.08);
}
.btn-lg { padding: 18px 42px; font-size: 1rem; }

/* ============================================================
   NAVBAR
   ============================================================ */
#navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 18px 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
#navbar.scrolled {
    background: rgba(12, 7, 5, 0.88);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    box-shadow: 0 4px 60px rgba(0,0,0,0.5);
    padding: 10px 0;
}
.nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 28px;
    display: flex;
    align-items: center;
    gap: 40px;
}
.logo {
    font-family: var(--mono);
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gold-light);
}
.logo-svg { color: var(--gold); }
.nav-links { display: flex; gap: 36px; margin-left: auto; }
.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-3);
    transition: color 0.3s;
    position: relative;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -6px; left: 50%; transform: translateX(-50%);
    width: 0; height: 2px;
    background: var(--gold);
    border-radius: 2px;
    transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-links a:hover { color: var(--gold-light); }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
    font-size: 0.82rem;
    font-weight: 600;
    padding: 10px 26px;
    border-radius: 100px;
    background: linear-gradient(135deg, var(--gold), var(--gold-dim));
    color: var(--brown-950);
    transition: all 0.35s;
    box-shadow: 0 2px 16px rgba(212, 160, 60, 0.2);
}
.nav-cta:hover {
    box-shadow: 0 4px 24px rgba(212, 160, 60, 0.4);
    transform: translateY(-2px);
}

/* Burger */
.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    z-index: 10;
}
.burger span {
    width: 22px; height: 2px;
    background: var(--gold);
    border-radius: 2px;
    transition: all 0.35s;
}
.burger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============================================================
   HERO
   ============================================================ */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    padding-bottom: 60px;
    overflow: hidden;
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
}
.hero-text h1 {
    font-size: clamp(2.4rem, 5.5vw, 4rem);
    letter-spacing: -0.035em;
    margin-bottom: 22px;
    font-weight: 800;
}
.hero-sub {
    font-size: 1.05rem;
    color: var(--text-2);
    margin-bottom: 36px;
    max-width: 520px;
    line-height: 1.75;
}
.hero-actions { display: flex; gap: 16px; margin-bottom: 52px; flex-wrap: wrap; }

/* Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 28px;
    padding: 20px 28px;
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
}
.stat { display: flex; flex-direction: column; }
.stat-num {
    font-family: var(--mono);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--gold-light);
    line-height: 1.2;
}
.stat-label {
    font-size: 0.7rem;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 2px;
}
.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--border-h);
}

/* ORBIT SYSTEM */
.hero-visual { display: flex; justify-content: center; align-items: center; }
.orbit-system {
    position: relative;
    width: 420px;
    height: 420px;
}
.orbit {
    position: absolute;
    border: 1px solid var(--border);
    border-radius: 50%;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
}
.orbit-1 { width: 260px; height: 260px; animation: orbitSpin 20s linear infinite; }
.orbit-2 { width: 340px; height: 340px; border-style: dashed; opacity: 0.5; animation: orbitSpin 30s linear infinite reverse; }
.orbit-3 { width: 420px; height: 420px; opacity: 0.25; animation: orbitSpin 40s linear infinite; }
@keyframes orbitSpin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.orbit-core {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 180px; height: 180px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 0 60px var(--gold-glow), 0 0 120px rgba(212, 160, 60, 0.15);
    border: 2px solid var(--border-h);
    z-index: 2;
}
.orbit-core img {
    width: 100%; height: 100%;
    object-fit: cover;
    filter: saturate(0.8) brightness(1.1);
}
.orbit-dot {
    position: absolute;
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 16px var(--gold-glow);
    z-index: 3;
}
.dot-1 { top: 50%; left: 0; transform: translate(-50%, -50%); animation: dotPulse 2s ease infinite; }
.dot-2 { top: 10%; left: 70%; animation: dotPulse 2s ease infinite 0.6s; }
.dot-3 { bottom: 10%; left: 25%; animation: dotPulse 2s ease infinite 1.2s; }
@keyframes dotPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.6); opacity: 1; }
}

/* ============================================================
   TRUST BAR
   ============================================================ */
.trust-bar {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    padding: 18px 0;
}
.trust-inner {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px 40px;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-2);
    font-weight: 500;
}
.trust-icon { color: var(--gold); font-size: 0.9rem; }

/* ============================================================
   STEPS
   ============================================================ */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 36px 28px 32px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(8px);
}
.step-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at top left, rgba(212, 160, 60, 0.06), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}
.step-card:hover { border-color: var(--border-h); transform: translateY(-6px); }
.step-card:hover::after { opacity: 1; }
.step-header { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.step-num {
    font-family: var(--mono);
    font-size: 2.4rem;
    font-weight: 700;
    color: rgba(212, 160, 60, 0.18);
    line-height: 1;
    flex-shrink: 0;
}
.step-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border-h), transparent);
}
.step-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--gold-bright);
    position: relative;
    z-index: 1;
}
.step-card p { color: var(--text-2); font-size: 0.92rem; position: relative; z-index: 1; }

/* ============================================================
   TECHNOLOGY
   ============================================================ */
.tech-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: center;
}
.tech-image { position: relative; }
.tech-img-wrap {
    position: relative;
    border-radius: var(--r);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 24px 80px rgba(0,0,0,0.5);
}
.tech-img-wrap img { width: 100%; aspect-ratio: 3/2; object-fit: cover; }
.tech-img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, var(--bg-alt) 100%);
}

/* Floating cards */
.tech-float-card {
    position: absolute;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-h);
    border-radius: var(--r-sm);
    padding: 12px 18px;
    z-index: 5;
    animation: floatY 4s ease-in-out infinite;
}
.float-card-1 { bottom: -20px; right: -16px; animation-delay: 0s; }
.float-card-2 { top: -16px; left: -16px; animation-delay: 1.5s; }
@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
.fc-label {
    display: block;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-3);
    margin-bottom: 2px;
    font-family: var(--mono);
}
.fc-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gold-light);
}

.tech-content h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 20px; letter-spacing: -0.02em; }
.tech-content p {
    color: var(--text-2);
    margin-bottom: 18px;
    font-size: 0.96rem;
}

/* ============================================================
   FEATURES
   ============================================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 32px 26px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(8px);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}
.feature-card:hover { border-color: var(--border-h); transform: translateY(-5px); box-shadow: 0 16px 50px rgba(0,0,0,0.3); }
.feature-card:hover::before { opacity: 1; }
.feature-icon-wrap {
    width: 48px; height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 160, 60, 0.08);
    border: 1px solid var(--border);
    border-radius: 14px;
    margin-bottom: 18px;
    transition: all 0.3s;
}
.feature-card:hover .feature-icon-wrap {
    background: rgba(212, 160, 60, 0.14);
    border-color: var(--border-h);
    box-shadow: 0 0 20px rgba(212, 160, 60, 0.12);
}
.feature-icon { font-size: 1.3rem; }
.feature-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--gold-bright);
}
.feature-card p { color: var(--text-2); font-size: 0.88rem; line-height: 1.65; }

/* ============================================================
   CTA
   ============================================================ */
.section-cta { padding: 60px 0 110px; }
.cta-box {
    position: relative;
    border-radius: var(--r);
    overflow: hidden;
    border: 1px solid var(--border-h);
    min-height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.cta-bg-img {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    z-index: 0;
    filter: brightness(0.6);
}
.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(12, 7, 5, 0.92), rgba(68, 40, 18, 0.82));
    z-index: 1;
}
.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 64px 44px;
    max-width: 600px;
}
.cta-content h2 { font-size: clamp(1.7rem, 3.5vw, 2.5rem); margin-bottom: 16px; letter-spacing: -0.02em; }
.cta-content p { color: var(--text-2); margin-bottom: 30px; font-size: 1.02rem; }

/* ============================================================
   FAQ
   ============================================================ */
.faq-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 64px;
    align-items: start;
}
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    overflow: hidden;
    transition: all 0.35s;
    backdrop-filter: blur(4px);
    background: var(--bg-card);
}
.faq-item[open] { border-color: var(--border-h); box-shadow: 0 4px 24px rgba(0,0,0,0.2); }
.faq-item summary {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: color 0.3s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    font-family: var(--mono);
    font-size: 1.2rem;
    color: var(--gold);
    flex-shrink: 0;
    transition: transform 0.35s;
    line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { color: var(--gold-light); }
.faq-body {
    padding: 0 24px 20px;
    color: var(--text-2);
    font-size: 0.92rem;
    line-height: 1.75;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    border-top: 1px solid var(--border);
    padding: 56px 0 0;
    position: relative;
    z-index: 1;
}
.footer-inner {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 64px;
    padding-bottom: 36px;
}
.footer-brand p { color: var(--text-3); font-size: 0.88rem; margin-top: 14px; max-width: 340px; line-height: 1.6; }
.footer-links { display: flex; gap: 56px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h4 {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--gold);
    margin-bottom: 6px;
    font-family: var(--mono);
}
.footer-col a { font-size: 0.88rem; color: var(--text-3); transition: color 0.3s; }
.footer-col a:hover { color: var(--gold-light); }
.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 18px 28px;
    text-align: center;
}
.footer-bottom p { font-size: 0.74rem; color: var(--brown-600); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
[data-anim] {
    opacity: 0;
    transform: translateY(36px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-anim].visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-sub { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { margin-top: 48px; }
    .orbit-system { width: 320px; height: 320px; }
    .orbit-1 { width: 200px; height: 200px; }
    .orbit-2 { width: 260px; height: 260px; }
    .orbit-3 { width: 320px; height: 320px; }
    .orbit-core { width: 140px; height: 140px; }
    .tech-layout { grid-template-columns: 1fr; }
    .tech-image { max-width: 540px; margin: 0 auto; }
    .faq-layout { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .section { padding: 72px 0; }
    .nav-links, .nav-cta { display: none; }
    .burger { display: flex; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: rgba(12, 7, 5, 0.96);
        backdrop-filter: blur(20px);
        padding: 28px 32px;
        gap: 22px;
        border-bottom: 1px solid var(--border);
    }
    .steps-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 36px; }
    .footer-links { gap: 40px; }
    .hero-stats { flex-wrap: wrap; padding: 16px 20px; gap: 16px; }
    .stat-divider { display: none; }
    .cta-content { padding: 44px 24px; }
    .orbit-system { width: 260px; height: 260px; }
    .orbit-1 { width: 160px; height: 160px; }
    .orbit-2 { width: 210px; height: 210px; }
    .orbit-3 { width: 260px; height: 260px; }
    .orbit-core { width: 110px; height: 110px; }
    .tech-float-card { display: none; }
}