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

:root {
    --forest: #1a2f62;
    --moss: #284b86;
    --leaf: #4294dd;
    --sage: #74b5ea;
    --mint: #d9ecfb;
    --cream: #f5f9ff;
    --bark: #8b5e3c;
    --sand: #e8f1fb;
    --gold: #66a9e6;
}

body {
    font-family: 'Roboto', sans-serif;
    background: var(--cream);
    color: var(--forest);
    overflow-x: hidden;
}

/* ===== NAVBAR ===== */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 60px;
    background: rgba(245, 249, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(66, 148, 221, 0.15);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.nav-logo .logo-icon {
    width: 28px;
    height: 28px;
    display: block;
}

.nav-logo .name {
    font-family: 'Roboto', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--forest);
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    color: var(--moss);
    text-decoration: none;
    padding: 8px 20px;
    border-radius: 40px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s;
}

.nav-link:hover {
    background: var(--mint);
    color: var(--forest);
}

.nav-btn {
    background: var(--leaf);
    color: white;
    padding: 10px 24px;
    border-radius: 40px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    transition: all 0.25s;
    box-shadow: 0 4px 12px rgba(66, 148, 221, 0.3);
}

.nav-btn:hover {
    background: var(--moss);
    transform: translateY(-2px);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 24px 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(66, 148, 221, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero > * {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--mint);
    color: var(--moss);
    padding: 6px 18px;
    border-radius: 40px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 28px;
    border: 1px solid rgba(66, 148, 221, 0.2);
}

.hero-badge .ui-icon {
    width: 16px;
    height: 16px;
    display: block;
}

.hero h1 {
    font-family: 'Roboto', sans-serif;
    font-size: clamp(48px, 8vw, 90px);
    line-height: 1.05;
    color: var(--forest);
    margin-bottom: 24px;
}

.hero h1 em {
    font-style: italic;
    color: var(--leaf);
}

.hero p {
    font-size: 18px;
    color: #4d6386;
    max-width: 560px;
    line-height: 1.7;
    margin-bottom: 48px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

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

.btn-primary {
    background: var(--forest);
    color: white;
    padding: 16px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 700;
    box-shadow: 0 8px 24px rgba(26, 47, 98, 0.3);
    transition: all 0.3s;
    border: 2px solid transparent;
}

.btn-primary:hover {
    background: var(--moss);
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(26, 47, 98, 0.35);
}

.btn-secondary {
    background: transparent;
    color: var(--forest);
    padding: 16px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 700;
    border: 2px solid var(--leaf);
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: var(--mint);
    transform: translateY(-3px);
}

/* ===== TREE VISUAL ===== */
.tree-visual {
    margin-top: 72px;
    position: relative;
    width: 100%;
    max-width: 700px;
}

.tree-svg {
    width: 100%;
    height: auto;
}

.tree-card {
    position: absolute;
    background: white;
    border-radius: 12px;
    padding: 14px 18px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    font-size: 13px;
    font-weight: 600;
    color: var(--forest);
    min-width: 120px;
    text-align: center;
    border: 1px solid var(--mint);
    animation: float 3s ease-in-out infinite;
}

.tree-card .emoji {
    font-size: 20px;
    display: block;
    margin-bottom: 4px;
}

.tree-card .emoji .logo-icon {
    width: 20px;
    height: 20px;
    display: inline-block;
    vertical-align: middle;
}

.tree-card .emoji .ui-icon {
    width: 20px;
    height: 20px;
    display: inline-block;
    vertical-align: middle;
}

.tree-card.card1 {
    top: 10%;
    left: -5%;
    animation-delay: 0s;
}

.tree-card.card2 {
    top: 5%;
    right: -5%;
    animation-delay: 0.7s;
}

.tree-card.card3 {
    bottom: 20%;
    left: 5%;
    animation-delay: 1.4s;
}

.tree-card.card4 {
    bottom: 25%;
    right: 5%;
    animation-delay: 2.1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ===== FEATURES ===== */
.section {
    padding: 100px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-tag {
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 12px;
    font-weight: 700;
    color: var(--sage);
    margin-bottom: 12px;
}

.section-title {
    font-family: 'Roboto', sans-serif;
    font-size: clamp(32px, 5vw, 52px);
    color: var(--forest);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-sub {
    font-size: 17px;
    color: #667;
    line-height: 1.6;
    max-width: 520px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
    margin-top: 64px;
}

.feature-card {
    background: white;
    border-radius: 20px;
    padding: 36px 32px;
    border: 1px solid rgba(66, 148, 221, 0.12);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--leaf), var(--sage));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 48px rgba(26, 47, 98, 0.1);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--mint);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin-bottom: 24px;
}

.feature-icon .logo-icon {
    width: 30px;
    height: 30px;
    display: block;
}

.feature-icon .ui-icon {
    width: 30px;
    height: 30px;
    display: block;
}

.feature-title {
    font-family: 'Roboto', sans-serif;
    font-size: 20px;
    color: var(--forest);
    margin-bottom: 12px;
}

.feature-text {
    color: #667;
    line-height: 1.6;
    font-size: 15px;
}

/* ===== HOW IT WORKS ===== */
.how-section {
    background: var(--forest);
    color: white;
    padding: 100px 24px;
    text-align: center;
}

.how-section .section-tag {
    color: var(--sage);
}

.how-section .section-title {
    color: white;
    margin: 0 auto 16px;
}

.how-section .section-sub {
    color: rgba(255, 255, 255, 0.65);
    margin: 0 auto 72px;
}

.steps {
    display: flex;
    gap: 0;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.step {
    flex: 1;
    min-width: 200px;
    max-width: 260px;
    text-align: center;
    padding: 0 20px;
    position: relative;
}

.step-num {
    width: 60px;
    height: 60px;
    border: 2px solid var(--sage);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Roboto', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--sage);
    margin: 0 auto 24px;
}

.step-icon {
    font-size: 32px;
    margin-bottom: 16px;
    display: block;
}

.step-icon .logo-icon {
    width: 32px;
    height: 32px;
    display: block;
    margin: 0 auto;
}

.step-icon .ui-icon {
    width: 32px;
    height: 32px;
    display: block;
    margin: 0 auto;
}

.step h3 {
    font-family: 'Roboto', sans-serif;
    font-size: 18px;
    color: white;
    margin-bottom: 10px;
}

.step p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

/* ===== STATS ===== */
.stats-section {
    background: var(--sand);
    padding: 80px 24px;
}

.stats-grid {
    display: flex;
    gap: 0;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.stat {
    flex: 1;
    min-width: 180px;
    text-align: center;
    padding: 32px 24px;
}

.stat-num {
    font-family: 'Roboto', sans-serif;
    font-size: 52px;
    font-weight: 700;
    color: var(--leaf);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: #778;
    margin-top: 8px;
    font-weight: 600;
}

/* ===== CTA ===== */
.cta-section {
    padding: 100px 24px;
    text-align: center;
    background: linear-gradient(135deg, var(--mint) 0%, var(--sand) 100%);
}

.cta-section .section-title {
    margin: 0 auto 16px;
}

.cta-section .section-sub {
    margin: 0 auto 48px;
}

/* ===== FOOTER ===== */
footer {
    background: var(--forest);
    color: rgba(255, 255, 255, 0.5);
    padding: 40px 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-logo {
    font-family: 'Roboto', sans-serif;
    font-size: 20px;
    color: white;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-logo .logo-icon {
    width: 22px;
    height: 22px;
    display: block;
}

footer p {
    font-size: 13px;
}

@media (max-width: 600px) {
    nav {
        padding: 16px 20px;
    }

    .hero {
        padding: 90px 20px 48px;
    }

    .section {
        padding: 60px 20px;
    }

    .tree-card {
        display: none;
    }

    footer {
        padding: 32px 20px;
    }
}