:root {
    --bg: #0a0a0f; --surface: #14141f; --border: #2a2a3a;
    --text: #e0e0e8; --text-muted: #888;
    --accent: #1e3a5f; --accent-hover: #2E75B6;
    --success: #22c55e; --error: #ef4444;
    --gold: #F1C40F;
    --font: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    --gr: #2E75B6; --sir: #27AE60; --per: #C0392B; --sr: #F1C40F; --ir: #E8EEF5; --rr: #a0aec0;
}

/* Light mode — light grey, easy on eyes */
.light-mode {
    --bg: #e8e8ec; --surface: #d8d8de; --border: #c0c0c8;
    --text: #1a1a2e; --text-muted: #555;
    --accent: #2E75B6; --accent-hover: #4A90D0;
}
/* Note: dark mode accent is the dark navy (#1B2A4A), light mode uses the brighter blue */

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-snap-type: y proximity; scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.6; font-size: 14px; }
.page { background: var(--bg); min-height: 100vh; }
.container { max-width: 900px; margin: 0 auto; padding: 0 1.5rem; }

/* Nav */
.navbar { border-bottom: 1px solid var(--border); padding: 0.8rem 0; position: sticky; top: 0; background: var(--bg); z-index: 50; }
.nav-container { display: flex; align-items: center; justify-content: space-between; }
.nav-brand { color: var(--accent); text-decoration: none; font-size: 0.95rem; font-weight: bold; letter-spacing: 2px; white-space: nowrap; }
.nav-brand-light { color: var(--text-muted); font-weight: 300; font-size: 0.7rem; letter-spacing: 1px; }
.nav-links { display: flex; gap: 0.4rem; align-items: center; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.nav-btn { background: none; border: 1px solid var(--border); color: var(--text-muted); font-size: 0.85rem; cursor: pointer; padding: 0.35rem 0.7rem; border-radius: 4px; line-height: 1; text-decoration: none; font-family: var(--font); white-space: nowrap; display: inline-flex; align-items: center; gap: 0.4rem; }
.nav-btn:hover { color: var(--text); border-color: var(--text-muted); background: rgba(255,255,255,0.04); }

/* Nav extras */
.nav-wallet-connected { color: var(--success) !important; border-color: var(--success) !important; }
.nav-links::-webkit-scrollbar { display: none; }
.nav-links { scrollbar-width: none; }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; min-width: 300px; max-width: 420px; width: 90vw; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.modal-header h3 { margin: 0; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 1.2rem; cursor: pointer; padding: 0.2rem 0.5rem; }
.modal-close:hover { color: var(--text); }

/* Wallet */
.wallet-option { display: block; width: 100%; padding: 0.8rem; margin-bottom: 0.5rem; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); font-family: var(--font); cursor: pointer; text-align: left; }
.wallet-option:hover { border-color: var(--accent); }
.chain-tag { float: right; color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; }
.wallet-detail { margin: 0.5rem 0; }
.wallet-detail-label { color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; margin-top: 0.8rem; }
.wallet-detail-value { font-size: 0.9rem; }
.wallet-detail-address { font-size: 0.75rem; word-break: break-all; background: var(--bg); padding: 0.5rem; border-radius: 4px; border: 1px solid var(--border); margin-top: 0.3rem; }

/* Snap Sections */
.snap-section { scroll-snap-align: start; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 2rem 0; }
.section-content { width: 100%; }
.section-content h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.section-subtitle { color: var(--text-muted); margin-bottom: 2rem; }

/* Hero */
.hero { text-align: center; }
.hero-content { display: flex; flex-direction: column; align-items: center; }
.hero h1 { font-size: 5rem; letter-spacing: 0; color: var(--accent); margin-bottom: 0; word-spacing: -0.5rem; }
.hero-institute { font-size: 3.5rem; color: var(--text-muted); letter-spacing: 0; text-transform: none; font-weight: 300; }
.tagline { margin-top: 1rem; font-size: 1.2rem; }
.hero-ai { color: var(--text-muted); font-size: 0.85rem; margin-top: 1rem; }
.fourx-tagline { color: var(--gold); font-size: 0.85rem; letter-spacing: 1px; margin-top: 1rem; }
.btn-glow { box-shadow: 0 0 20px rgba(30,58,95,0.4); }
.btn-glow:hover { box-shadow: 0 0 30px rgba(46,117,182,0.6); }
.btn-lg { padding: 0.8rem 2rem; font-size: 1rem; }

/* 4X Voltage Buttons */
.voltage-button {
    position: relative;
    display: inline-block;
}
.voltage-button button.btn-voltage {
    color: var(--text);
    background: var(--surface);
    padding: 1rem 3rem;
    border-radius: 3rem;
    border: 3px solid var(--accent);
    font-size: 1.1rem;
    font-family: var(--font);
    font-weight: bold;
    letter-spacing: 3px;
    cursor: pointer;
    transition: background 0.3s;
}
.voltage-button button.btn-voltage:hover {
    background: rgba(30,58,95,0.4);
}
.voltage-button button.btn-voltage:hover + svg {
    opacity: 1;
}
.voltage-button svg {
    display: block;
    position: absolute;
    top: -0.75em;
    left: -0.25em;
    width: calc(100% + 0.5em);
    height: calc(100% + 1.5em);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s;
    transition-delay: 0.1s;
}
.voltage-line {
    stroke-dasharray: 100;
    filter: url('#glow');
}
.v-line-1 {
    stroke: #4A90D0;
    stroke-dashoffset: 0;
    animation: spark-1 3s linear infinite;
}
.v-line-2 {
    stroke: #8BB8E0;
    stroke-dashoffset: 500;
    animation: spark-2 3s linear infinite;
}

@keyframes spark-1 {
    to { stroke-dashoffset: -1000; }
}
@keyframes spark-2 {
    to { stroke-dashoffset: -500; }
}

/* Section lead */
.section-lead { max-width: 700px; margin: 0 auto 1rem; line-height: 1.8; font-size: 1rem; }

/* 4X Explainer */
.fourx-explainer { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: 2rem; }
.fourx-explain-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 1.5rem; text-align: center; transition: transform 0.2s, box-shadow 0.2s; }
.fourx-explain-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.fourx-explain-card.fourx-gr { border-top: 3px solid var(--gr); }
.fourx-explain-card.fourx-sir { border-top: 3px solid #27AE60; }
.fourx-explain-card.fourx-per { border-top: 3px solid #C0392B; }
.fourx-explain-card.fourx-sr { border-top: 3px solid var(--gold); }
.fourx-explain-icon { font-size: 2.5rem; margin-bottom: 0.5rem; }
.fourx-explain-card h3 { color: var(--gold); font-size: 1rem; letter-spacing: 1px; margin-bottom: 0.3rem; }
.fourx-game { color: var(--text-muted); font-style: italic; font-size: 0.8rem; margin-bottom: 0.5rem; }
.fourx-market { color: var(--text); font-size: 0.85rem; }

/* Report Type Cards */
.report-type-card { text-align: center; transition: transform 0.2s, box-shadow 0.2s; }
.report-type-card:hover { transform: translateY(-3px); box-shadow: 0 6px 20px rgba(0,0,0,0.3); }
.report-type-card h3 { font-size: 0.95rem; margin-top: 0.5rem; }
.report-type-card p { color: var(--text-muted); font-size: 0.8rem; margin-top: 0.3rem; }
.report-type-badge { display: inline-block; padding: 0.3rem 0.8rem; border-radius: 4px; font-size: 0.8rem; font-weight: bold; }

/* Engine Blocks */
.engine-block { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 2rem; }
.engine-label { color: var(--accent); font-size: 0.75rem; font-weight: bold; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 0.8rem; }
.engine-description { color: var(--text-muted); font-size: 0.95rem; line-height: 1.6; max-width: 600px; margin-bottom: 1.5rem; }

/* Engine Stats */
.engine-stats { display: flex; gap: 2rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.engine-stat { text-align: center; }
.stat-big { display: block; font-size: 2.2rem; font-weight: bold; color: var(--accent); line-height: 1; }
.stat-label { display: block; font-size: 0.75rem; color: var(--text-muted); margin-top: 0.3rem; text-transform: uppercase; letter-spacing: 1px; }

/* Foundation Callout */
.foundation-callout { background: var(--bg); border-left: 3px solid var(--accent); padding: 1rem 1.5rem; border-radius: 0 8px 8px 0; margin-top: 1.5rem; }
.foundation-callout p { margin: 0; font-size: 0.85rem; line-height: 1.6; color: var(--text-muted); }

/* Process Timeline */
.process-timeline { display: flex; align-items: stretch; gap: 0; margin-top: 2rem; }
.process-timeline .process-step { flex: 1; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 1.5rem; position: relative; transition: transform 0.2s; display: flex; flex-direction: column; }
.process-timeline .process-step:hover { transform: translateY(-3px); }
.process-connector { display: flex; align-items: center; color: var(--accent); font-size: 1.5rem; padding: 0 0.3rem; margin-top: 2rem; }

/* Generic section (non-snap pages) */
.section { padding: 3rem 0; }
.section h1, .section h2 { margin-bottom: 1.5rem; }

/* Grids */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; }
.grid-4x { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1.5rem; }
.card h3 { margin-bottom: 0.5rem; font-size: 1rem; }

/* 4X Cards */
.fourx-card { text-align: center; border-top: 3px solid transparent; }
.fourx-card.fourx-gr { border-top-color: var(--gr); }
.fourx-card.fourx-sir { border-top-color: var(--sir); }
.fourx-card.fourx-per { border-top-color: var(--per); }
.fourx-card.fourx-sr { border-top-color: var(--sr); }
.fourx-icon-lg { font-size: 2rem; }
.series-topics { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.3rem; }
.fourx-pillar { color: var(--gold); font-size: 0.8rem; font-weight: bold; letter-spacing: 1px; text-transform: uppercase; }

/* 4X Badges */
.fourx-badge { display: inline-block; padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.75rem; font-weight: bold; }
.fourx-gr { background: rgba(46,117,182,0.15); color: var(--gr); }
.fourx-sir { background: rgba(39,174,96,0.15); color: var(--sir); }
.fourx-per { background: rgba(192,57,43,0.15); color: var(--per); }
.fourx-sr { background: rgba(241,196,15,0.15); color: var(--sr); }
.fourx-ir { background: rgba(27,42,74,0.3); color: var(--ir); }
.fourx-rr { background: rgba(80,80,80,0.2); color: var(--rr); }
.fourx-label { color: var(--text-muted); font-size: 0.8rem; }

/* Process Steps */
.process-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; }
.process-step { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1.5rem; position: relative; }
.step-number { font-size: 2rem; font-weight: bold; color: var(--accent); opacity: 0.3; position: absolute; top: 0.8rem; right: 1rem; }
.process-step h3 { margin-bottom: 0.5rem; }
.process-step p { color: var(--text-muted); font-size: 0.85rem; }

/* Report link in 4X cards */
.fourx-report-link { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.5rem; letter-spacing: 0.5px; }

/* Get Access */
.access-card { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--gr); border-radius: 12px; padding: 2.5rem 2rem; max-width: 600px; margin: 2rem auto 0; text-align: center; }
.access-price { margin-bottom: 2rem; }
.access-amount { font-size: 3rem; font-weight: bold; color: var(--gold); }
.access-per { display: block; color: var(--text-muted); font-size: 0.9rem; margin-top: 0.3rem; }
.access-includes { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem 1.5rem; text-align: left; max-width: 450px; margin: 0 auto 2rem; justify-content: center; }
.access-item { font-size: 0.85rem; color: var(--text); padding: 0.4rem 0; }
.access-item i { color: var(--gr); margin-right: 0.5rem; width: 1.2rem; text-align: center; }
.access-crypto { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 2rem; }
.access-divider { margin: 0 0.8rem; opacity: 0.4; }
.access-actions { display: flex; justify-content: center; gap: 1rem; }

/* Pricing (reports page) */
.pricing-summary { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 1rem; margin: 1rem 0; text-align: center; font-size: 1.1rem; }

/* Buttons */
.btn { display: inline-block; padding: 0.6rem 1.4rem; border-radius: 6px; text-decoration: none; font-family: var(--font); font-size: 0.85rem; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border); }
.btn-small { padding: 0.3rem 0.8rem; font-size: 0.8rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Badges */
.badge { display: inline-block; padding: 0.2rem 0.6rem; border-radius: 4px; font-size: 0.75rem; font-weight: bold; text-transform: uppercase; }
.badge-free { background: var(--success); color: #000; }
.badge-active { background: var(--accent); color: #fff; }

/* Accuracy */
.accuracy-badge { display: inline-block; padding: 0.15rem 0.5rem; border-radius: 4px; font-size: 0.75rem; font-weight: bold; }
.badge-green { background: rgba(34,197,94,0.2); color: var(--success); }
.badge-orange { background: rgba(245,158,11,0.2); color: #f59e0b; }
.badge-red { background: rgba(239,68,68,0.2); color: var(--error); }

/* Current Cycle Card */
.current-cycle-label { color: var(--accent); font-size: 0.7rem; font-weight: bold; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 0.5rem; }
.cycle-hero-card { background: var(--surface); border: 1px solid var(--accent); border-radius: 12px; padding: 2rem; margin-bottom: 2rem; }
.cycle-hero-header { display: flex; align-items: baseline; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.cycle-hero-header h2 { font-size: 1.3rem; margin: 0; }
.cycle-hero-period { color: var(--text-muted); font-size: 0.8rem; }
.cycle-hero-code { color: var(--text-muted); font-size: 0.7rem; opacity: 0.6; }

/* Search Box */
.search-box { position: relative; margin-bottom: 1.5rem; }
.search-box input { width: 100%; padding: 0.8rem 0.8rem 0.8rem 2.5rem; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-family: var(--font); font-size: 0.9rem; }
.search-box input:focus { outline: none; border-color: var(--accent); }
.search-box input::placeholder { color: var(--text-muted); }
.search-icon { position: absolute; left: 0.8rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.85rem; }

/* Report Badge Grid */
.report-badge-grid { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.8rem; }
.report-badge-item { display: flex; align-items: center; gap: 0.4rem; padding: 0.3rem 0.7rem; border-radius: 6px; font-size: 0.75rem; }
.report-badge-code { font-weight: bold; }
.report-badge-title { color: var(--text-muted); font-size: 0.7rem; }

/* Cycle List */
.cycle-list { display: flex; flex-direction: column; gap: 0.5rem; }
.cycle-list-card { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 1rem 1.2rem; cursor: pointer; transition: border-color 0.2s, transform 0.1s; }
.cycle-list-card:hover { border-color: var(--text-muted); }
.cycle-list-card.cycle-selected { border-color: var(--accent); }
.cycle-list-card.cycle-public { border-left: 3px solid var(--success); }

.cycle-list-header { display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; }
.cycle-list-title { font-weight: bold; font-size: 0.95rem; }
.cycle-list-code { color: var(--text-muted); font-size: 0.7rem; opacity: 0.6; }
.cycle-list-date { color: var(--text-muted); font-size: 0.8rem; margin-left: auto; }
.cycle-list-headline { color: var(--text-muted); font-size: 0.85rem; font-style: italic; margin-top: 0.4rem; }

/* Cycle Expanded */
.cycle-expanded { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.cycle-expanded-text { color: var(--text-muted); font-size: 0.85rem; line-height: 1.6; margin-bottom: 1rem; }
.cycle-expanded-actions { margin-top: 1.5rem; }

/* Report Mini Cards */
.report-card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.6rem; margin-top: 1rem; }
.report-card-bottom { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.6rem; margin-top: 0.6rem; }
.report-card-mini { background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 0.8rem 1rem; border-left: 3px solid var(--border); transition: transform 0.15s; }
.report-card-mini:hover { transform: translateY(-2px); }
.report-card-mini-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.3rem; }
.report-card-mini-code { font-weight: bold; font-size: 0.8rem; }
.report-card-mini-pillar { color: var(--text-muted); font-size: 0.7rem; }
.report-card-mini-title { font-size: 0.8rem; color: var(--text); line-height: 1.3; }

/* Report card 4X colors */
.report-card-gpr { border-left-color: var(--gr); }
.report-card-gpr .report-card-mini-code { color: var(--gr); }
.report-card-sir { border-left-color: #27AE60; }
.report-card-sir .report-card-mini-code { color: #27AE60; }
.report-card-per { border-left-color: #C0392B; }
.report-card-per .report-card-mini-code { color: #C0392B; }
.report-card-slr { border-left-color: var(--gold); }
.report-card-slr .report-card-mini-code { color: var(--gold); }
.report-card-isr { border-left-color: var(--accent); }
.report-card-isr .report-card-mini-code { color: var(--accent); }
.report-card-ivr { border-left-color: var(--text-muted); }
.report-card-ivr .report-card-mini-code { color: var(--text-muted); }

/* Legacy compat */
.cycle-card { margin-bottom: 1.5rem; }
.cycle-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.cycle-header h2 { font-size: 1.2rem; margin: 0; }
.report-list { display: flex; flex-direction: column; gap: 0.5rem; }
.cycle-report { display: flex; align-items: center; gap: 0.6rem; padding: 0.5rem 0; border-bottom: 1px solid var(--border); font-size: 0.85rem; }
.cycle-report:last-child { border-bottom: none; }

/* Sneak Peak */
.sneak-peak { background: var(--bg); border-left: 4px solid var(--gold); padding: 1.5rem; margin: 1rem 0; border-radius: 0 6px 6px 0; }
.sneak-peak h4 { color: var(--gold); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 0.75rem; }
.sneak-peak-headline { color: var(--text); font-size: 1.1rem; margin-bottom: 0.5rem; }
.sneak-peak p { color: var(--text-muted); font-size: 0.85rem; line-height: 1.6; font-style: italic; }

/* Reports */
.issue-number { color: var(--text-muted); font-size: 0.85rem; }
.description { color: var(--text-muted); font-size: 0.85rem; }
.date { color: var(--text-muted); font-size: 0.8rem; }
.note { color: var(--text-muted); font-size: 0.85rem; font-style: italic; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.3rem; color: var(--text-muted); font-size: 0.85rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.6rem; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; color: var(--text); font-family: var(--font); font-size: 0.85rem; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--accent); }

/* Purchase */
.purchase-form { max-width: 600px; }
.payment-instructions { background: var(--bg); padding: 1rem; border-radius: 6px; margin: 1rem 0; }
.payment-instructions code { display: block; padding: 0.5rem; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; margin: 0.5rem 0; word-break: break-all; font-size: 0.8rem; }

/* Hash fingerprint */
.hash-fingerprint { color: var(--text-muted); font-size: 0.7rem; font-family: var(--font); opacity: 0.6; cursor: help; }

.success { text-align: center; }
.success h3 { color: var(--success); }
.error { color: var(--error); margin-top: 0.5rem; font-size: 0.85rem; }
.footer { border-top: 1px solid var(--border); padding: 2rem 0; text-align: center; color: var(--text-muted); font-size: 0.8rem; margin-top: 4rem; }

/* Responsive — hide nav text labels on tablets */
@media (max-width: 900px) {
    .nav-btn span { display: none; }
    .nav-btn { padding: 0.35rem 0.55rem; }
}

/* Mobile */
@media (max-width: 768px) {
    body { font-size: 13px; }
    .container { padding: 0 1rem; }
    .snap-section { min-height: auto; padding: 3rem 0; }
    .hero h1 { font-size: 3rem; letter-spacing: 6px; }
    .hero-institute { font-size: 1rem; letter-spacing: 3px; }
    .fourx-explainer { grid-template-columns: repeat(2, 1fr); }
    .process-timeline { flex-direction: column; }
    .process-connector { transform: rotate(90deg); justify-content: center; padding: 0.5rem 0; margin-top: 0; }
    .engine-stats { justify-content: center; }
    .engine-block { padding: 1.5rem; }
    .grid-4x { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
    .nav-container { gap: 0.5rem; }
    .nav-brand { font-size: 0.7rem; }
    .nav-btn { font-size: 0.8rem; padding: 0.3rem 0.45rem; }
    .cycle-report { flex-wrap: wrap; gap: 0.4rem; }
    .cycle-report .btn { margin-left: 0 !important; width: 100%; text-align: center; margin-top: 0.3rem; }
    .cycle-header { flex-direction: column; align-items: flex-start; gap: 0.3rem; }
    .purchase-form { max-width: 100%; }
    .payment-instructions code { font-size: 0.65rem; }
    .access-card { padding: 2rem 1.5rem; }
    .access-amount { font-size: 2.5rem; }
    .access-includes { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr; }
}

@media (max-width: 400px) {
    .grid-4x { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2rem; }
    .nav-brand { font-size: 0.6rem; letter-spacing: 0; }
}