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

:root {
    --bg: #0d1117;
    --bg-card: #161b22;
    --border: #30363d;
    --text: #c9d1d9;
    --text-muted: #8b949e;
    --text-white: #ffffff;
    --accent: #238636;
    --accent-hover: #2ea043;
    --blue: #58a6ff;
    --blue-hover: #79c0ff;
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ── Keyframes ── */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-6px);
    }
}

@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(35, 134, 54, 0.5);
    }

    50% {
        box-shadow: 0 0 0 12px rgba(35, 134, 54, 0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.96);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ── Navigation ── */

.navbar {
    width: 100%;
    border-bottom: 1px solid var(--border);
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    animation: slideDown 0.5s ease forwards;
}

.nav-inner {
    max-width: 1060px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.9rem 2rem;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-white);
    text-decoration: none;
    letter-spacing: -0.03em;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--text-white);
}

.nav-cta {
    background: var(--accent);
    color: var(--text-white) !important;
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius);
    font-weight: 600 !important;
    transition: var(--transition) !important;
}

.nav-cta:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* ── Hero ── */

.hero {
    text-align: center;
    padding: 6rem 2rem 3rem;
    max-width: 720px;
    animation: fadeInUp 0.7s ease forwards;
}

.hero-badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    background: rgba(35, 134, 54, 0.1);
    border: 1px solid rgba(35, 134, 54, 0.3);
    padding: 0.35rem 1rem;
    border-radius: 100px;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 800;
    color: var(--text-white);
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 1.2rem;
}

.hero-sub {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ── Buttons ── */

.btn {
    display: inline-block;
    padding: 0.8rem 2.2rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
}

.btn-primary {
    background: var(--accent);
    color: var(--text-white);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(35, 134, 54, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--blue);
    color: var(--text-white);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.1rem;
    animation: pulseGlow 2.5s infinite;
}

/* ── Section Label ── */

.section-label {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 2.5rem;
    letter-spacing: -0.02em;
}

/* ── Deal Options ── */

.options {
    padding: 4rem 2rem;
    width: 100%;
    animation: fadeInUp 0.7s ease forwards;
    animation-delay: 0.15s;
    opacity: 0;
}

.options-inner {
    max-width: 900px;
    margin: 0 auto;
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 700px) {
    .options-grid {
        grid-template-columns: 1fr;
    }
}

.option-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
}

.option-card:hover {
    border-color: var(--blue);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.option-card-accent {
    border-color: rgba(35, 134, 54, 0.3);
}

.option-card-accent:hover {
    border-color: var(--accent);
}

.option-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--accent);
    background: rgba(35, 134, 54, 0.12);
    border: 1px solid rgba(35, 134, 54, 0.3);
    padding: 0.25rem 0.7rem;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.option-icon {
    margin-bottom: 1rem;
    color: var(--blue);
}

.option-card-accent .option-icon {
    color: var(--accent);
}

.option-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.6rem;
}

.option-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1.2rem;
    line-height: 1.6;
}

.option-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.option-features li {
    font-size: 0.85rem;
    color: var(--text);
    padding-left: 1.2rem;
    position: relative;
}

.option-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.option-card-accent .option-features li::before {
    background: var(--accent);
}

/* ── How It Works ── */

.how {
    padding: 4rem 2rem;
    width: 100%;
    animation: fadeInUp 0.7s ease forwards;
    animation-delay: 0.3s;
    opacity: 0;
}

.how-inner {
    max-width: 900px;
    margin: 0 auto;
}

.how-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 800px) {
    .how-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {
    .how-grid {
        grid-template-columns: 1fr;
    }
}

.how-step {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.how-step:hover {
    transform: translateY(-3px);
    border-color: var(--blue);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.how-num {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 0.6rem;
    letter-spacing: -0.03em;
}

.how-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.how-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ── Features ── */

.features {
    padding: 4rem 2rem;
    width: 100%;
    animation: fadeInUp 0.7s ease forwards;
    animation-delay: 0.45s;
    opacity: 0;
}

.features-inner {
    max-width: 900px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--blue);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.feature-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.feature-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ── CTA Section ── */

.cta-section {
    padding: 5rem 2rem;
    width: 100%;
    animation: fadeInUp 0.7s ease forwards;
    animation-delay: 0.6s;
    opacity: 0;
}

.cta-inner {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    animation: float 5s ease-in-out infinite;
}

.cta-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.8rem;
}

.cta-desc {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* ── Footer ── */

.footer {
    width: 100%;
    border-top: 1px solid var(--border);
    padding: 2rem;
    margin-top: auto;
}

.footer-inner {
    max-width: 1060px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--text-white);
}

/* ── Shared Page Layout ── */

.page-content {
    max-width: 720px;
    width: 100%;
    padding: 4rem 2rem;
    animation: fadeIn 0.6s ease forwards;
}

.page-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 0.6rem;
    letter-spacing: -0.02em;
}

.page-sub {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 3rem;
}

/* ── Start Page ── */

.start-options {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.start-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
}

.start-card:hover {
    border-color: var(--blue);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.start-card-alt:hover {
    border-color: var(--accent);
}

.start-card-icon {
    margin-bottom: 1rem;
}

.start-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.start-card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.start-btn {
    display: inline-block;
}

.start-info {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.start-info-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1.5rem;
}

.start-info-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.start-info-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.start-info-num {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    background: rgba(35, 134, 54, 0.1);
    border: 1px solid rgba(35, 134, 54, 0.3);
    border-radius: 50%;
}

.start-info-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    padding-top: 0.2rem;
}

/* ── Guide / Help Page ── */

.guide-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.guide-step {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition);
}

.guide-step:hover {
    border-color: var(--blue);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    transform: translateX(4px);
}

.guide-step-header {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.2rem;
}

.guide-step-num {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
    background: rgba(35, 134, 54, 0.12);
    border: 1px solid rgba(35, 134, 54, 0.3);
    border-radius: 50%;
}

.guide-step-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
}

.guide-step-body {
    padding-left: 3.5rem;
}

.guide-step-body p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    line-height: 1.7;
}

.guide-step-body ul {
    list-style: none;
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.guide-step-body ul li {
    font-size: 0.9rem;
    color: var(--text);
    padding-left: 1.2rem;
    position: relative;
}

.guide-step-body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
}

.guide-step-body code {
    background: rgba(35, 134, 54, 0.1);
    color: var(--accent);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
}

.guide-types {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

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

.guide-type {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
}

.guide-type h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.3rem;
}

.guide-type p {
    font-size: 0.85rem !important;
    margin-bottom: 0 !important;
}

.guide-periods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
    margin-bottom: 1rem;
}

@media (max-width: 500px) {
    .guide-periods {
        grid-template-columns: 1fr;
    }
}

.guide-period {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.8rem 1rem;
    transition: var(--transition);
}

.guide-period:hover {
    border-color: var(--accent);
}

.guide-period-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 0.2rem;
}

.guide-period-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.guide-cta {
    text-align: center;
    padding: 3rem 0 0;
}

.guide-cta h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1.2rem;
}

/* ── Responsive Tuning ── */

@media (max-width: 640px) {
    .hero {
        padding: 4rem 1.5rem 2rem;
    }

    .nav-inner {
        padding: 0.8rem 1.2rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a:not(.nav-cta) {
        font-size: 0.82rem;
    }

    .page-content {
        padding: 2.5rem 1.2rem;
    }

    .guide-step-body {
        padding-left: 0;
        margin-top: 1rem;
    }

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