```css
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --bg: #101810;
    --panel: #19231a;
    --panel-light: #202c21;
    --green: #b8f36b;
    --text: #f0f3e9;
    --muted: #a0ab9b;
    --border: #303c30;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    line-height: 1.6;
}

button, a {
    font: inherit;
}

button {
    cursor: pointer;
}

a {
    color: inherit;
    text-decoration: none;
}

.navbar {
    height: 76px;
    padding: 0 7%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 23px;
    font-weight: 700;
}

.logo-icon {
    color: var(--green);
}

.nav-tag, footer > span {
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--muted);
}

.xp-display {
    color: var(--green);
    background: var(--panel);
    padding: 9px 15px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 13px;
}

main {
    max-width: 1120px;
    margin: auto;
    padding: 45px 25px 70px;
}

.hero {
    min-height: 360px;
    display: grid;
    grid-template-columns: 1fr 0.9fr;
    align-items: center;
    gap: 35px;
}

.hero-content {
    padding: 20px 0;
}

.eyebrow {
    color: var(--green);
    font-size: 10px;
    letter-spacing: 2px;
    font-weight: 700;
}

h1, h2, h3 {
    font-family: 'Space Grotesk', sans-serif;
    line-height: 1.15;
}

h1 {
    font-size: clamp(40px, 5vw, 61px);
    letter-spacing: -2.5px;
    margin: 20px 0;
}

h1 span {
    color: var(--green);
}

.hero-content > p,
.section-heading > p {
    color: var(--muted);
    max-width: 440px;
    font-size: 14px;
    margin-bottom: 25px;
}

.primary-button, .generate-button {
    display: inline-block;
    border: 0;
    border-radius: 9px;
    padding: 14px 22px;
    background: var(--green);
    color: #172015;
    font-weight: 700;
    font-size: 13px;
    transition: transform 0.2s, background 0.2s;
}

.primary-button:hover, .generate-button:hover {
    transform: translateY(-2px);
    background: #d0ff9a;
}

.hero-art {
    height: 315px;
    position: relative;
    overflow: hidden;
    border-radius: 18px;
    background: linear-gradient(160deg, #344a34, #182c21 65%, #111c16);
    isolation: isolate;
}

.sun {
    position: absolute;
    width: 100px;
    height: 100px;
    top: 40px;
    right: 60px;
    border-radius: 50%;
    background: #d6ef9d;
    box-shadow: 0 0 75px #d6ef9d44;
}

.mountain {
    position: absolute;
    width: 0;
    height: 0;
    border-left: 190px solid transparent;
    border-right: 190px solid transparent;
    border-bottom: 230px solid #314c37;
    bottom: 25px;
}

.mountain-back {
    right: -50px;
    border-bottom-color: #425b3c;
}

.mountain-front {
    left: -85px;
    border-left-width: 220px;
    border-right-width: 220px;
    border-bottom-width: 180px;
    border-bottom-color: #203d2b;
}

.tree {
    position: absolute;
    color: #101d16;
    font-size: 120px;
    line-height: 1;
    bottom: 22px;
}

.tree-one {
    left: 35px;
}

.tree-two {
    right: 20px;
    font-size: 160px;
}

.art-caption {
    position: absolute;
    bottom: 15px;
    left: 15px;
    z-index: 2;
    font-size: 9px;
    letter-spacing: 2px;
    color: #e3eed9;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 35px 0 65px;
}

.stat-card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 22px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.stat-icon {
    color: var(--green);
    font-size: 27px;
}

.stat-card strong, .stat-card small {
    display: block;
}

.stat-card strong {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 26px;
}

.stat-card small {
    font-size: 9px;
    letter-spacing: 1px;
    color: var(--muted);
}

.quest-builder {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 35px;
    border-radius: 17px;
}

.section-heading {
    margin-bottom: 28px;
}

.section-heading h2 {
    font-size: clamp(23px, 3vw, 31px);
    margin: 12px 0;
    letter-spacing: -0.8px;
}

.section-heading > p {
    margin: 0;
}

.field-label {
    font-size: 10px;
    color: var(--muted);
    letter-spacing: 1.5px;
    margin: 24px 0 12px;
    font-weight: 700;
}

.vibe-options, .time-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.vibe, .time-option {
    background: #111a12;
    border: 1px solid var(--border);
    border-radius: 9px;
    padding: 12px 17px;
    color: var(--text);
    font-size: 13px;
    transition: 0.2s;
}

.vibe.active, .time-option.active {
    background: #293b25;
    border-color: var(--green);
    color: var(--green);
}

.generate-button {
    margin-top: 28px;
    width: 100%;
    padding: 16px;
}

.small-note {
    text-align: center;
    font-size: 11px;
    color: var(--muted);
    margin-top: 13px;
}

.quest-section {
    margin-top: 65px;
    scroll-margin-top: 25px;
}

.quest-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.quest-card {
    display: flex;
    flex-direction: column;
    min-height: 260px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 13px;
    padding: 22px;
    animation: appear 0.4s ease both;
}

.quest-card:nth-child(2) {
    animation-delay: 0.08s;
}

.quest-card:nth-child(3) {
    animation-delay: 0.16s;
}

.quest-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.quest-emoji {
    font-size: 29px;
}

.quest-xp {
    font-size: 11px;
    color: var(--green);
    background: #293b25;
    border-radius: 30px;
    padding: 5px 10px;
}

.quest-card h3 {
    font-size: 19px;
    margin-bottom: 10px;
}

.quest-card p {
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 20px;
}

.complete-button {
    width: 100%;
    margin-top: auto;
    border: 1px solid #45583e;
    border-radius: 8px;
    padding: 11px;
    background: transparent;
    color: var(--green);
    font-weight: 600;
    font-size: 12px;
}

.complete-button:hover:not(:disabled) {
    background: #293b25;
}

.complete-button:disabled {
    cursor: default;
    color: var(--muted);
    border-color: var(--border);
}

.secondary-button {
    margin-top: 22px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 12px 18px;
    font-size: 12px;
}

.secondary-button:hover {
    border-color: var(--green);
}

.outdoor-reminder {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-top: 65px;
    padding: 25px;
    border: 1px solid #354832;
    background: linear-gradient(110deg, #1c2b1b, #17231a);
    border-radius: 13px;
}

.reminder-icon {
    font-size: 36px;
}

.outdoor-reminder h3 {
    font-size: 17px;
    margin-bottom: 5px;
}

.outdoor-reminder p {
    font-size: 12px;
    color: var(--muted);
}

footer {
    border-top: 1px solid var(--border);
    padding: 28px 7%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

footer .logo {
    font-size: 18px;
}

footer p {
    color: var(--muted);
    font-size: 11px;
}

.toast {
    position: fixed;
    bottom: 25px;
    left: 50%;
    transform: translate(-50%, 20px);
    background: var(--green);
    color: #172015;
    padding: 13px 22px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 700;
    opacity: 0;
    pointer-events: none;
    transition: 0.25s;
    z-index: 10;
    width: max-content;
    max-width: 90%;
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

[hidden] {
    display: none !important;
}

@keyframes appear {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 760px) {
    .navbar {
        height: 65px;
        padding: 0 5%;
    }

    .nav-tag {
        display: none;
    }

    main {
        padding: 25px 17px 45px;
    }

    .hero {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .hero-art {
        height: 240px;
    }

    .stats {
        gap: 8px;
        margin: 25px 0 45px;
    }

    .stat-card {
        padding: 13px 8px;
        gap: 6px;
        flex-direction: column;
        align-items: flex-start;
    }

    .stat-card strong {
        font-size: 22px;
    }

    .stat-card small {
        font-size: 8px;
    }

    .quest-builder {
        padding: 22px 17px;
    }

    .quest-list {
        grid-template-columns: 1fr;
    }

    .quest-card {
        min-height: 225px;
    }

    .outdoor-reminder {
        padding: 18px;
        align-items: flex-start;
    }

    footer {
        flex-direction: column;
        text-align: center;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}
```