:root {
     --ink: #110e08;
     --ink2: #1e1a10;
     --parch: #f8f4ec;
     --aged: #f0e8d4;
     --border: #ddd0b4;
     --border2: #c8bb98;
     --sepia: #8b6e3a;
     --sepia2: #6b4e20;
     --gold: #c8920a;
     --gold2: #e0aa28;
     --gold-glow: rgba(200, 146, 10, 0.15);
     --red: #8b1a1a;
     --blue: #1a3060;
     --green: #1a5a30;
     --muted: #6a5c40;
     --soft: #9a8c72;
     --display: 'EB Garamond', Georgia, serif;
     --sans: 'IBM Plex Sans', system-ui, sans-serif;
     --mono: 'IBM Plex Mono', monospace;
     --r: 1.618;
     /* golden ratio */
 }

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

 html {
     scroll-behavior: smooth;
     font-size: 16px;
 }

 body {
     background: var(--parch);
     font-family: var(--sans);
     color: var(--ink);
     overflow-x: hidden;
     line-height: 1.7;
 }

 /* CANVAS TEXTURE */
 body::before {
     content: '';
     position: fixed;
     inset: 0;
     background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
     pointer-events: none;
     z-index: 0;
 }

 /* TOP RULE — Da Vinci vitruvian proportions */
 .top-rule {
     position: fixed;
     top: 0;
     left: 0;
     right: 0;
     height: 4px;
     z-index: 200;
     background: linear-gradient(90deg, var(--sepia2), var(--gold), var(--sepia), var(--gold2), var(--sepia2));
 }

 /* ═══ NAV ═══ */
 nav {
     position: sticky;
     top: 4px;
     z-index: 100;
     background: rgba(248, 244, 236, 0.95);
     backdrop-filter: blur(16px);
     border-bottom: 1px solid var(--border);
     height: 60px;
     display: flex;
     align-items: center;
     padding: 0 3rem;
     gap: 2rem;
 }

 .nav-logo {
     display: flex;
     align-items: center;
     gap: 0.7rem;
     text-decoration: none;
 }

 .logo-vinci {
     width: 36px;
     height: 36px;
     border: 1.5px solid var(--gold);
     border-radius: 4px;
     display: flex;
     align-items: center;
     justify-content: center;
     font-family: var(--mono);
     font-size: 0.7rem;
     color: var(--gold);
     letter-spacing: -0.03em;
 }

 .logo-mark {
     font-family: var(--display);
     font-size: 1.05rem;
     font-weight: 700;
     color: var(--ink);
 }

 .logo-mark span {
     color: var(--gold);
 }

 .logo-sub {
     font-family: var(--mono);
     font-size: 0.55rem;
     color: var(--muted);
     display: block;
     letter-spacing: 0.05em;
 }

 .nav-items {
     display: flex;
     gap: 0.15rem;
     list-style: none;
     flex: 1;
     flex-wrap: wrap;
 }

 .nav-items a {
     font-size: 0.72rem;
     font-weight: 500;
     color: var(--muted);
     text-decoration: none;
     padding: 0.35rem 0.7rem;
     border-radius: 100px;
     transition: all 0.18s;
     letter-spacing: 0.02em;
 }

 .nav-items a:hover {
     color: var(--ink);
     background: var(--aged);
 }

 .nav-cta {
     background: var(--ink);
     color: var(--gold);
     font-family: var(--sans);
     font-size: 0.75rem;
     font-weight: 600;
     padding: 0.45rem 1.1rem;
     border-radius: 5px;
     text-decoration: none;
     border: none;
     cursor: pointer;
     transition: all 0.2s;
     letter-spacing: 0.04em;
     white-space: nowrap;
     margin-left: auto;
 }

 .nav-cta:hover {
     background: var(--sepia2);
     color: var(--gold2);
 }

 /* ═══ HERO — Da Vinci Vitruvian layout ═══ */
 .hero {
     position: relative;
     z-index: 1;
     max-width: 1280px;
     margin: 0 auto;
     padding: 5rem 3rem 3rem;
     display: grid;
     grid-template-columns: 1fr 400px;
     gap: 4rem;
     min-height: calc(100vh - 64px);
     align-items: center;
 }

 /* Background manuscript lines */
 .hero::before {
     content: '';
     position: absolute;
     inset: 0;
     background-image: repeating-linear-gradient(transparent, transparent 39px, rgba(139, 110, 58, 0.06) 39px, rgba(139, 110, 58, 0.06) 40px);
     pointer-events: none;
     z-index: 0;
 }

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

 .hero-eyebrow {
     display: inline-flex;
     align-items: center;
     gap: 0.6rem;
     border: 1px solid var(--border);
     background: var(--aged);
     padding: 0.3rem 0.9rem;
     border-radius: 100px;
     margin-bottom: 1.4rem;
 }

 .eyebrow-badge {
     width: 7px;
     height: 7px;
     border-radius: 50%;
     background: var(--green);
     animation: pulse 2.2s infinite;
 }

 @keyframes pulse {

     0%,
     100% {
         opacity: 1;
     }

     50% {
         opacity: 0.3;
     }
 }

 .eyebrow-txt {
     font-family: var(--mono);
     font-size: 0.62rem;
     color: var(--gold);
     letter-spacing: 0.12em;
     text-transform: uppercase;
 }

 h1.vinci-title {
     font-family: var(--display);
     font-size: clamp(2.8rem, 4.8vw, 5rem);
     font-weight: 800;
     line-height: 1.0;
     letter-spacing: -0.025em;
     color: var(--ink);
     margin-bottom: 1.2rem;
 }

 h1.vinci-title .name {
     font-style: italic;
     font-weight: 400;
     color: var(--gold);
     font-size: 0.68em;
     display: block;
     margin-bottom: 0.12em;
 }

 h1.vinci-title .tagline {
     display: block;
 }

 h1.vinci-title em {
     font-style: italic;
     color: var(--sepia);
 }

 .hero-desc {
     font-size: 1.02rem;
     color: var(--muted);
     line-height: 1.8;
     max-width: 560px;
     margin-bottom: 1.8rem;
 }

 .hero-desc strong {
     color: var(--ink);
     font-weight: 500;
 }

 /* Discipline pills */
 .discipline-pills {
     display: flex;
     flex-wrap: wrap;
     gap: 0.4rem;
     margin-bottom: 1.8rem;
 }

 .dp {
     font-family: var(--mono);
     font-size: 0.6rem;
     letter-spacing: 0.06em;
     text-transform: uppercase;
     padding: 0.25rem 0.7rem;
     border-radius: 3px;
     font-weight: 400;
 }

 .dp-math {
     background: #eef4ff;
     color: var(--blue);
     border: 1px solid #b8ccee;
 }

 .dp-sci {
     background: #eef8f2;
     color: var(--green);
     border: 1px solid #b8d8c4;
 }

 .dp-py {
     background: #fff8e4;
     color: var(--sepia2);
     border: 1px solid #e0cca0;
 }

 .dp-des {
     background: #fef0f0;
     color: var(--red);
     border: 1px solid #e8c0c0;
 }

 .dp-ai {
     background: var(--aged);
     color: var(--gold);
     border: 1px solid var(--border);
 }

 .hero-btns {
     display: flex;
     gap: 0.8rem;
     flex-wrap: wrap;
 }

 .btn-vinci {
     display: inline-flex;
     align-items: center;
     gap: 0.5rem;
     background: var(--ink);
     color: var(--gold);
     border: none;
     padding: 0.85rem 1.8rem;
     border-radius: 6px;
     font-family: var(--sans);
     font-size: 0.9rem;
     font-weight: 600;
     cursor: pointer;
     transition: all 0.2s;
     text-decoration: none;
     letter-spacing: 0.03em;
     box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
 }

 .btn-vinci:hover {
     background: var(--sepia2);
     transform: translateY(-2px);
 }

 .btn-gold {
     display: inline-flex;
     align-items: center;
     gap: 0.5rem;
     background: var(--gold);
     color: #fff;
     border: none;
     padding: 0.85rem 1.8rem;
     border-radius: 6px;
     font-family: var(--sans);
     font-size: 0.9rem;
     font-weight: 600;
     cursor: pointer;
     transition: all 0.2s;
     text-decoration: none;
     box-shadow: 0 4px 18px rgba(200, 146, 10, 0.28);
 }

 .btn-gold:hover {
     background: var(--gold2);
     transform: translateY(-2px);
 }

 .btn-outline {
     display: inline-flex;
     align-items: center;
     gap: 0.5rem;
     background: transparent;
     color: var(--muted);
     border: 1px solid var(--border2);
     padding: 0.85rem 1.8rem;
     border-radius: 6px;
     font-family: var(--sans);
     font-size: 0.9rem;
     font-weight: 500;
     cursor: pointer;
     transition: all 0.2s;
     text-decoration: none;
 }

 .btn-outline:hover {
     border-color: var(--ink);
     color: var(--ink);
 }

 /* ═══ HERO RIGHT — Da Vinci Sketchbook Card ═══ */
 .sketchbook {
     background: var(--aged);
     border: 1px solid var(--border);
     border-radius: 12px;
     overflow: hidden;
     box-shadow: 4px 4px 0 var(--border), 8px 8px 0 var(--border2);
 }

 .sb-header {
     background: var(--ink2);
     padding: 0.9rem 1.3rem;
     display: flex;
     align-items: center;
     gap: 0.7rem;
 }

 .sb-dots {
     display: flex;
     gap: 5px;
 }

 .sb-dots span {
     width: 9px;
     height: 9px;
     border-radius: 50%;
 }

 .sb-dots span:nth-child(1) {
     background: #ff5f57;
 }

 .sb-dots span:nth-child(2) {
     background: #ffbd2e;
 }

 .sb-dots span:nth-child(3) {
     background: #28c840;
 }

 .sb-title {
     font-family: var(--mono);
     font-size: 0.6rem;
     color: rgba(255, 255, 255, 0.35);
     letter-spacing: 0.08em;
 }

 .sb-url {
     margin-left: auto;
     font-family: var(--mono);
     font-size: 0.55rem;
     color: var(--gold);
     background: rgba(200, 146, 10, 0.15);
     padding: 0.18rem 0.6rem;
     border-radius: 3px;
     letter-spacing: 0.04em;
 }

 .sb-body {
     padding: 1.3rem;
 }

 /* Live problem solver inside hero */
 .sb-label {
     font-family: var(--mono);
     font-size: 0.58rem;
     letter-spacing: 0.18em;
     text-transform: uppercase;
     color: var(--soft);
     margin-bottom: 0.6rem;
     display: flex;
     align-items: center;
     gap: 0.4rem;
 }

 .sb-label::before {
     content: '✦';
     color: var(--gold);
     font-size: 0.65rem;
 }

 .sb-select {
     width: 100%;
     background: var(--parch);
     border: 1px solid var(--border);
     border-radius: 6px;
     padding: 0.55rem 0.8rem;
     color: var(--ink);
     font-family: var(--sans);
     font-size: 0.8rem;
     outline: none;
     cursor: pointer;
     margin-bottom: 0.6rem;
     transition: border-color 0.18s;
 }

 .sb-select:focus {
     border-color: var(--gold);
 }

 .sb-select option {
     background: var(--parch);
 }

 .sb-solve-btn {
     width: 100%;
     background: var(--gold);
     border: none;
     border-radius: 6px;
     padding: 0.6rem;
     color: #fff;
     font-family: var(--sans);
     font-size: 0.8rem;
     font-weight: 600;
     cursor: pointer;
     transition: all 0.18s;
     margin-bottom: 0.7rem;
     letter-spacing: 0.03em;
 }

 .sb-solve-btn:hover {
     background: var(--gold2);
 }

 .sb-solve-btn:disabled {
     opacity: 0.45;
     cursor: not-allowed;
 }

 .sb-output {
     background: var(--parch);
     border: 1px solid var(--border);
     border-radius: 6px;
     padding: 0.85rem;
     min-height: 90px;
     font-size: 0.78rem;
     line-height: 1.75;
     color: var(--ink2);
     font-family: var(--sans);
 }

 .thinking {
     display: none;
     align-items: center;
     gap: 5px;
     color: var(--soft);
     font-family: var(--mono);
     font-size: 0.62rem;
 }

 .thinking.on {
     display: flex;
 }

 .td {
     width: 4px;
     height: 4px;
     border-radius: 50%;
     background: var(--gold);
     animation: tdb 1.15s infinite;
 }

 .td:nth-child(2) {
     animation-delay: 0.2s;
 }

 .td:nth-child(3) {
     animation-delay: 0.4s;
 }

 @keyframes tdb {

     0%,
     100% {
         opacity: 0.2;
     }

     50% {
         opacity: 1;
     }
 }

 /* ═══ STATS ROW ═══ */
 .stats-row {
     background: var(--ink2);
     padding: 1.3rem 3rem;
     display: flex;
     align-items: center;
     justify-content: center;
     gap: 0;
     position: relative;
     z-index: 1;
 }

 .stat-block {
     flex: 1;
     text-align: center;
     padding: 0.4rem 2rem;
     border-right: 1px solid rgba(255, 255, 255, 0.07);
 }

 .stat-block:last-child {
     border-right: none;
 }

 .sb-num {
     font-family: var(--display);
     font-size: 2rem;
     font-style: italic;
     font-weight: 800;
     color: var(--gold);
     line-height: 1;
     margin-bottom: 0.15rem;
 }

 .sb-lbl {
     font-family: var(--mono);
     font-size: 0.58rem;
     color: rgba(255, 255, 255, 0.3);
     text-transform: uppercase;
     letter-spacing: 0.1em;
 }

 /* ═══ SECTION COMMONS ═══ */
 .section {
     max-width: 1280px;
     margin: 0 auto;
     padding: 5rem 3rem;
     position: relative;
     z-index: 1;
 }

 .full-section {
     padding: 5rem 3rem;
     position: relative;
     z-index: 1;
 }

 .stag {
     font-family: var(--mono);
     font-size: 0.6rem;
     letter-spacing: 0.22em;
     text-transform: uppercase;
     color: var(--gold);
     margin-bottom: 0.65rem;
     display: flex;
     align-items: center;
     gap: 0.6rem;
 }

 .stag::before {
     content: '✦ ';
     color: var(--border2);
 }

 h2.sh {
     font-family: var(--display);
     font-size: clamp(2rem, 3.8vw, 3.2rem);
     font-weight: 800;
     font-style: italic;
     line-height: 1.05;
     color: var(--ink);
     margin-bottom: 0.5rem;
 }

 h2.sh em {
     font-style: normal;
     color: var(--gold);
 }

 .sd {
     font-size: 0.95rem;
     color: var(--muted);
     line-height: 1.78;
     max-width: 600px;
     margin-bottom: 2.8rem;
 }

 /* Section divider */
 .vinci-rule {
     border: none;
     border-top: 1px solid var(--border);
     max-width: 1280px;
     margin: 0 auto;
 }

 .vinci-divider {
     max-width: 1280px;
     margin: 0 auto;
     padding: 0 3rem;
     display: flex;
     align-items: center;
     gap: 1rem;
     color: var(--soft);
 }

 .vinci-divider::before,
 .vinci-divider::after {
     content: '';
     flex: 1;
     height: 1px;
     background: linear-gradient(90deg, transparent, var(--border), transparent);
 }

 .vd-glyph {
     font-family: var(--mono);
     font-size: 0.58rem;
     letter-spacing: 0.22em;
     text-transform: uppercase;
     white-space: nowrap;
     color: var(--soft);
 }

 /* ═══ SERVICES — 2-col real world ═══ */
 .services-2col {
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 1px;
     background: var(--border);
     border: 1px solid var(--border);
     border-radius: 12px;
     overflow: hidden;
 }

 .service-panel {
     background: var(--parch);
     padding: 2rem 2.2rem;
     transition: background 0.2s;
 }

 .service-panel:hover {
     background: var(--aged);
 }

 .sp-icon {
     font-size: 2.2rem;
     margin-bottom: 0.8rem;
     display: block;
     line-height: 1;
 }

 .sp-tag {
     font-family: var(--mono);
     font-size: 0.58rem;
     letter-spacing: 0.14em;
     text-transform: uppercase;
     margin-bottom: 0.5rem;
     display: flex;
     align-items: center;
     gap: 0.4rem;
 }

 .sp-tag.math {
     color: var(--blue);
 }

 .sp-tag.py {
     color: var(--sepia2);
 }

 .sp-tag.des {
     color: var(--red);
 }

 .sp-tag.ai {
     color: var(--gold);
 }

 .sp-tag.web {
     color: var(--green);
 }

 .sp-name {
     font-family: var(--display);
     font-size: 1.35rem;
     font-weight: 700;
     color: var(--ink);
     margin-bottom: 0.45rem;
     letter-spacing: -0.01em;
 }

 .sp-desc {
     font-size: 0.83rem;
     color: var(--muted);
     line-height: 1.7;
     margin-bottom: 1.1rem;
 }

 /* Skills inside service panel */
 .sp-skills {
     display: flex;
     flex-wrap: wrap;
     gap: 0.35rem;
     margin-bottom: 1.1rem;
 }

 .skill-tag {
     font-family: var(--mono);
     font-size: 0.58rem;
     color: var(--muted);
     background: var(--aged);
     border: 1px solid var(--border);
     padding: 0.18rem 0.55rem;
     border-radius: 3px;
     letter-spacing: 0.04em;
 }

 .sp-bottom {
     display: flex;
     align-items: center;
     justify-content: space-between;
     border-top: 1px solid var(--border);
     padding-top: 0.9rem;
     flex-wrap: wrap;
     gap: 0.5rem;
 }

 .sp-rate {
     font-family: var(--mono);
     font-size: 0.75rem;
     color: var(--gold);
     font-weight: 400;
 }

 .sp-btn {
     background: var(--ink);
     color: var(--gold);
     font-family: var(--sans);
     font-size: 0.72rem;
     font-weight: 600;
     padding: 0.42rem 0.95rem;
     border-radius: 5px;
     text-decoration: none;
     border: none;
     cursor: pointer;
     transition: all 0.18s;
     letter-spacing: 0.04em;
 }

 .sp-btn:hover {
     background: var(--gold);
     color: #fff;
 }

 /* ═══ LIVE SOLVER — The Da Vinci engine ═══ */
 .solver-container {
     background: var(--ink);
     border-radius: 14px;
     overflow: hidden;
     box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
 }

 .solver-topbar {
     background: var(--ink2);
     border-bottom: 1px solid rgba(255, 255, 255, 0.06);
     padding: 0.9rem 1.6rem;
     display: flex;
     align-items: center;
     gap: 1rem;
 }

 .solver-icon {
     width: 38px;
     height: 38px;
     border-radius: 7px;
     background: linear-gradient(135deg, var(--sepia2), var(--gold));
     display: flex;
     align-items: center;
     justify-content: center;
     font-family: var(--display);
     font-size: 1rem;
     font-style: italic;
     color: #fff;
 }

 .solver-name {
     font-weight: 600;
     color: #fff;
     font-size: 0.9rem;
 }

 .solver-sub {
     font-family: var(--mono);
     font-size: 0.58rem;
     color: rgba(255, 255, 255, 0.3);
     margin-top: 1px;
 }

 .solver-live {
     margin-left: auto;
     display: flex;
     align-items: center;
     gap: 0.4rem;
     font-family: var(--mono);
     font-size: 0.6rem;
     color: rgba(255, 255, 255, 0.3);
 }

 .solver-live::before {
     content: '';
     width: 6px;
     height: 6px;
     border-radius: 50%;
     background: var(--green);
     animation: pulse 2s infinite;
 }

 .solver-body {
     padding: 1.6rem;
 }

 /* Tab system */
 .solver-tabs {
     display: flex;
     gap: 0.3rem;
     flex-wrap: wrap;
     margin-bottom: 1.4rem;
 }

 .stab {
     background: transparent;
     border: 1px solid rgba(255, 255, 255, 0.08);
     border-radius: 100px;
     padding: 0.42rem 0.9rem;
     font-family: var(--sans);
     font-size: 0.72rem;
     font-weight: 500;
     color: rgba(255, 255, 255, 0.4);
     cursor: pointer;
     transition: all 0.18s;
     letter-spacing: 0.03em;
 }

 .stab.active,
 .stab:hover {
     background: var(--gold);
     border-color: var(--gold);
     color: #fff;
 }

 .stab.active {
     color: var(--ink);
 }

 /* Problem presets */
 .preset-row {
     display: flex;
     flex-wrap: wrap;
     gap: 0.4rem;
     margin-bottom: 1rem;
 }

 .preset {
     background: rgba(255, 255, 255, 0.05);
     border: 1px solid rgba(255, 255, 255, 0.09);
     border-radius: 100px;
     padding: 0.35rem 0.8rem;
     font-family: var(--sans);
     font-size: 0.7rem;
     font-weight: 400;
     color: rgba(255, 255, 255, 0.5);
     cursor: pointer;
     transition: all 0.18s;
     letter-spacing: 0.02em;
 }

 .preset:hover {
     border-color: var(--gold);
     color: var(--gold);
     background: rgba(200, 146, 10, 0.08);
 }

 /* Level selector */
 .level-row {
     display: flex;
     gap: 0.4rem;
     margin-bottom: 1rem;
 }

 .lbtn {
     flex: 1;
     background: rgba(255, 255, 255, 0.04);
     border: 1px solid rgba(255, 255, 255, 0.08);
     border-radius: 5px;
     padding: 0.4rem;
     font-family: var(--sans);
     font-size: 0.7rem;
     font-weight: 600;
     color: rgba(255, 255, 255, 0.35);
     cursor: pointer;
     transition: all 0.18s;
     text-align: center;
 }

 .lbtn.on,
 .lbtn:hover {
     background: rgba(200, 146, 10, 0.15);
     border-color: rgba(200, 146, 10, 0.4);
     color: var(--gold2);
 }

 .solver-input-row {
     display: flex;
     gap: 0.7rem;
     margin-bottom: 1rem;
 }

 .solver-input {
     flex: 1;
     background: rgba(255, 255, 255, 0.06);
     border: 1.5px solid rgba(255, 255, 255, 0.1);
     border-radius: 8px;
     padding: 0.8rem 1rem;
     color: #fff;
     font-family: var(--sans);
     font-size: 0.9rem;
     outline: none;
     transition: border-color 0.2s;
 }

 .solver-input:focus {
     border-color: var(--gold);
 }

 .solver-input::placeholder {
     color: rgba(255, 255, 255, 0.22);
 }

 .solver-send {
     background: var(--gold);
     border: none;
     border-radius: 8px;
     padding: 0.8rem 1.5rem;
     color: var(--ink);
     font-family: var(--sans);
     font-size: 0.88rem;
     font-weight: 700;
     cursor: pointer;
     transition: all 0.18s;
     white-space: nowrap;
     letter-spacing: 0.03em;
 }

 .solver-send:hover {
     background: var(--gold2);
 }

 .solver-send:disabled {
     opacity: 0.4;
     cursor: not-allowed;
 }

 .solver-output {
     background: rgba(255, 255, 255, 0.04);
     border: 1px solid rgba(255, 255, 255, 0.07);
     border-radius: 10px;
     padding: 1.3rem;
     min-height: 160px;
     font-size: 0.88rem;
     line-height: 1.82;
     color: rgba(255, 255, 255, 0.75);
     white-space: pre-wrap;
     font-family: var(--sans);
 }

 /* Code output styling */
 .code-block {
     background: rgba(0, 0, 0, 0.4);
     border: 1px solid rgba(255, 255, 255, 0.06);
     border-radius: 6px;
     padding: 1rem;
     margin-top: 0.8rem;
     font-family: var(--mono);
     font-size: 0.78rem;
     color: #a8d8a0;
     line-height: 1.7;
     white-space: pre-wrap;
     overflow-x: auto;
 }

 /* ═══ TUITION PLATFORMS ═══ */
 .tuition-grid {
     display: grid;
     grid-template-columns: repeat(4, 1fr);
     gap: 1px;
     background: var(--border);
     border: 1px solid var(--border);
     border-radius: 12px;
     overflow: hidden;
 }

 .tuition-card {
     background: var(--parch);
     padding: 1.5rem 1.3rem;
     transition: background 0.2s;
     display: flex;
     flex-direction: column;
     gap: 0.55rem;
 }

 .tuition-card:hover {
     background: var(--aged);
 }

 .tuition-card.featured {
     background: #fff8e8;
 }

 .tc-logo {
     font-size: 1.8rem;
     line-height: 1;
 }

 .tc-name {
     font-family: var(--display);
     font-size: 1.05rem;
     font-weight: 700;
     color: var(--ink);
     letter-spacing: -0.01em;
 }

 .tc-desc {
     font-size: 0.78rem;
     color: var(--muted);
     line-height: 1.65;
     flex: 1;
 }

 .tc-earn {
     font-family: var(--mono);
     font-size: 0.68rem;
     color: var(--green);
     font-weight: 400;
 }

 .tc-btn {
     display: inline-flex;
     align-items: center;
     gap: 0.3rem;
     background: var(--ink);
     color: var(--gold);
     font-family: var(--sans);
     font-size: 0.7rem;
     font-weight: 600;
     padding: 0.42rem 0.9rem;
     border-radius: 5px;
     text-decoration: none;
     transition: all 0.18s;
     align-self: flex-start;
     letter-spacing: 0.04em;
 }

 .tc-btn:hover {
     background: var(--gold);
     color: #fff;
 }

 .featured-chip {
     background: var(--gold);
     color: #fff;
     font-family: var(--mono);
     font-size: 0.52rem;
     font-weight: 400;
     padding: 0.12rem 0.5rem;
     border-radius: 3px;
     letter-spacing: 0.08em;
     text-transform: uppercase;
     align-self: flex-start;
 }

 /* ═══ PORTFOLIO SHOWCASE ═══ */
 .portfolio-masonry {
     display: grid;
     grid-template-columns: repeat(3, 1fr);
     gap: 1rem;
 }

 .port-card {
     background: var(--parch);
     border: 1px solid var(--border);
     border-radius: 10px;
     overflow: hidden;
     transition: all 0.22s;
     cursor: pointer;
 }

 .port-card:hover {
     transform: translateY(-4px);
     box-shadow: 0 14px 40px rgba(0, 0, 0, 0.1);
     border-color: var(--border2);
 }

 .port-thumb {
     height: 110px;
     display: flex;
     align-items: center;
     justify-content: center;
     font-size: 2.5rem;
     position: relative;
     overflow: hidden;
 }

 .port-thumb::after {
     content: attr(data-lang);
     position: absolute;
     bottom: 0.5rem;
     right: 0.5rem;
     font-family: var(--mono);
     font-size: 0.55rem;
     color: rgba(255, 255, 255, 0.7);
     background: rgba(0, 0, 0, 0.45);
     padding: 0.15rem 0.5rem;
     border-radius: 3px;
     letter-spacing: 0.06em;
 }

 .port-info {
     padding: 1.1rem;
 }

 .port-cat {
     font-family: var(--mono);
     font-size: 0.56rem;
     letter-spacing: 0.15em;
     text-transform: uppercase;
     color: var(--gold);
     margin-bottom: 0.3rem;
 }

 .port-title {
     font-size: 0.88rem;
     font-weight: 600;
     color: var(--ink);
     margin-bottom: 0.25rem;
 }

 .port-desc {
     font-size: 0.73rem;
     color: var(--muted);
     line-height: 1.6;
     margin-bottom: 0.7rem;
 }

 .port-result {
     display: inline-block;
     background: #eef8f2;
     border: 1px solid #b8d8c4;
     color: var(--green);
     font-size: 0.62rem;
     font-weight: 600;
     padding: 0.18rem 0.6rem;
     border-radius: 100px;
     letter-spacing: 0.04em;
 }

 /* ═══ INCOME ROADMAP ═══ */
 .roadmap-section {
     background: var(--ink2);
     padding: 5rem 3rem;
     position: relative;
     z-index: 1;
     overflow: hidden;
 }

 .roadmap-section::before {
     content: 'Da Vinci';
     position: absolute;
     top: 50%;
     left: 50%;
     transform: translate(-50%, -50%) rotate(-15deg);
     font-family: var(--display);
     font-size: 22rem;
     font-weight: 800;
     font-style: italic;
     color: rgba(255, 255, 255, 0.018);
     pointer-events: none;
     white-space: nowrap;
 }

 .rm-inner {
     max-width: 1280px;
     margin: 0 auto;
 }

 .rm-title {
     font-family: var(--display);
     font-style: italic;
     font-size: clamp(2rem, 4vw, 3.5rem);
     font-weight: 800;
     color: #fff;
     margin-bottom: 0.4rem;
     line-height: 1.05;
 }

 .rm-title span {
     color: var(--gold2);
 }

 .rm-sub {
     font-size: 0.88rem;
     color: rgba(255, 255, 255, 0.35);
     line-height: 1.7;
     max-width: 540px;
     margin-bottom: 2.8rem;
 }

 .phases {
     display: grid;
     grid-template-columns: repeat(4, 1fr);
     gap: 1px;
     background: rgba(255, 255, 255, 0.05);
     border: 1px solid rgba(255, 255, 255, 0.05);
     border-radius: 10px;
     overflow: hidden;
     margin-bottom: 2.5rem;
 }

 .phase {
     background: rgba(255, 255, 255, 0.03);
     padding: 1.4rem 1.2rem;
 }

 .ph-n {
     font-family: var(--mono);
     font-size: 0.56rem;
     letter-spacing: 0.2em;
     text-transform: uppercase;
     color: var(--gold);
     margin-bottom: 0.35rem;
 }

 .ph-p {
     font-size: 0.62rem;
     color: rgba(255, 255, 255, 0.28);
     text-transform: uppercase;
     letter-spacing: 0.1em;
     margin-bottom: 0.5rem;
 }

 .ph-t {
     font-size: 0.9rem;
     font-weight: 600;
     color: #fff;
     margin-bottom: 0.35rem;
 }

 .ph-i {
     font-family: var(--display);
     font-size: 1.5rem;
     font-style: italic;
     color: var(--gold2);
     margin-bottom: 0.5rem;
     line-height: 1;
 }

 .ph-list {
     list-style: none;
     display: flex;
     flex-direction: column;
     gap: 0.28rem;
 }

 .ph-list li {
     font-size: 0.7rem;
     color: rgba(255, 255, 255, 0.38);
     display: flex;
     gap: 0.4rem;
 }

 .ph-list li::before {
     content: '→';
     color: var(--gold);
     flex-shrink: 0;
 }

 /* Income multiplier */
 .income-input-box {
     background: rgba(200, 146, 10, 0.08);
     border: 1px solid rgba(200, 146, 10, 0.22);
     border-radius: 10px;
     padding: 1.5rem;
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 1.5rem;
     align-items: start;
 }

 .iib-label {
     font-family: var(--mono);
     font-size: 0.58rem;
     letter-spacing: 0.18em;
     text-transform: uppercase;
     color: rgba(255, 255, 255, 0.3);
     margin-bottom: 0.6rem;
 }

 .iib-row {
     display: flex;
     gap: 0.6rem;
 }

 .iib-input {
     flex: 1;
     background: rgba(255, 255, 255, 0.06);
     border: 1px solid rgba(255, 255, 255, 0.1);
     border-radius: 7px;
     padding: 0.65rem 0.9rem;
     color: #fff;
     font-family: var(--sans);
     font-size: 0.85rem;
     outline: none;
     transition: border-color 0.2s;
 }

 .iib-input:focus {
     border-color: var(--gold2);
 }

 .iib-input::placeholder {
     color: rgba(255, 255, 255, 0.22);
 }

 .iib-btn {
     background: var(--gold2);
     border: none;
     border-radius: 7px;
     padding: 0.65rem 1.1rem;
     color: var(--ink);
     font-family: var(--sans);
     font-size: 0.8rem;
     font-weight: 700;
     cursor: pointer;
     transition: all 0.18s;
     white-space: nowrap;
     letter-spacing: 0.03em;
 }

 .iib-btn:hover {
     background: #e8c040;
 }

 .iib-btn:disabled {
     opacity: 0.4;
     cursor: not-allowed;
 }

 .iib-output {
     background: rgba(255, 255, 255, 0.04);
     border: 1px solid rgba(255, 255, 255, 0.06);
     border-radius: 7px;
     padding: 1rem;
     font-size: 0.8rem;
     line-height: 1.78;
     color: rgba(255, 255, 255, 0.6);
     min-height: 90px;
     white-space: pre-wrap;
 }

 .rm-thinking {
     display: none;
     align-items: center;
     gap: 5px;
     color: rgba(255, 255, 255, 0.28);
     font-family: var(--mono);
     font-size: 0.62rem;
 }

 .rm-thinking.on {
     display: flex;
 }

 /* ═══ HIRE SECTION ═══ */
 .hire-section {
     background: var(--aged);
     border-top: 1px solid var(--border);
     padding: 5rem 3rem;
     position: relative;
     z-index: 1;
 }

 .hire-inner {
     max-width: 1280px;
     margin: 0 auto;
     display: grid;
     grid-template-columns: 1fr 460px;
     gap: 4rem;
     align-items: start;
 }

 .pricing-cards {
     display: flex;
     flex-direction: column;
     gap: 0.7rem;
 }

 .price-row {
     background: var(--parch);
     border: 1px solid var(--border);
     border-radius: 9px;
     padding: 1.1rem 1.4rem;
     display: flex;
     align-items: center;
     justify-content: space-between;
     gap: 1rem;
     transition: all 0.2s;
 }

 .price-row:hover {
     border-color: var(--gold);
     transform: translateX(5px);
 }

 .price-row.hot {
     border-color: rgba(200, 146, 10, 0.4);
     background: var(--gold-glow);
 }

 .pr-left .pr-name {
     font-size: 0.9rem;
     font-weight: 600;
     color: var(--ink);
     margin-bottom: 0.15rem;
 }

 .pr-left .pr-desc {
     font-size: 0.73rem;
     color: var(--muted);
     line-height: 1.5;
 }

 .pr-right {
     flex-shrink: 0;
     text-align: right;
 }

 .pr-price {
     font-family: var(--mono);
     font-size: 1.05rem;
     color: var(--gold);
     margin-bottom: 0.15rem;
 }

 .pr-unit {
     font-size: 0.6rem;
     color: var(--soft);
     letter-spacing: 0.08em;
     text-transform: uppercase;
 }

 .hot-chip {
     background: var(--gold);
     color: #fff;
     font-family: var(--mono);
     font-size: 0.5rem;
     padding: 0.1rem 0.45rem;
     border-radius: 3px;
     letter-spacing: 0.08em;
     text-transform: uppercase;
     display: block;
     margin-bottom: 0.2rem;
     text-align: right;
 }

 /* Hire form */
 .hire-form-box {
     background: var(--parch);
     border: 1px solid var(--border);
     border-radius: 12px;
     padding: 1.7rem;
 }

 .hfb-title {
     font-family: var(--display);
     font-style: italic;
     font-size: 1.1rem;
     font-weight: 700;
     color: var(--ink);
     margin-bottom: 0.25rem;
 }

 .hfb-sub {
     font-size: 0.75rem;
     color: var(--muted);
     margin-bottom: 1.3rem;
     line-height: 1.65;
 }

 .fg {
     display: grid;
     grid-template-columns: 1fr 1fr;
     gap: 0.7rem;
 }

 .fg-full {
     grid-column: 1/-1;
 }

 .fg label {
     font-family: var(--mono);
     font-size: 0.56rem;
     letter-spacing: 0.14em;
     text-transform: uppercase;
     color: var(--soft);
     margin-bottom: 0.3rem;
     display: block;
 }

 .fg input,
 .fg select,
 .fg textarea {
     width: 100%;
     background: var(--aged);
     border: 1px solid var(--border);
     border-radius: 7px;
     padding: 0.65rem 0.9rem;
     color: var(--ink);
     font-family: var(--sans);
     font-size: 0.85rem;
     outline: none;
     transition: border-color 0.2s;
     margin-top: 0.3rem;
 }

 .fg input:focus,
 .fg select:focus,
 .fg textarea:focus {
     border-color: var(--gold);
 }

 .fg input::placeholder,
 .fg textarea::placeholder {
     color: var(--soft);
 }

 .fg select option {
     background: var(--parch);
 }

 .fg textarea {
     resize: vertical;
     min-height: 80px;
 }

 .fg-submit {
     grid-column: 1/-1;
     background: var(--ink);
     border: none;
     border-radius: 7px;
     padding: 0.88rem;
     color: var(--gold);
     font-family: var(--sans);
     font-size: 0.92rem;
     font-weight: 700;
     cursor: pointer;
     transition: all 0.2s;
     letter-spacing: 0.03em;
     margin-top: 0.3rem;
 }

 .fg-submit:hover {
     background: var(--sepia2);
     transform: translateY(-2px);
 }

 .fg-note {
     grid-column: 1/-1;
     font-family: var(--mono);
     font-size: 0.58rem;
     color: var(--soft);
     text-align: center;
     line-height: 1.6;
 }

 .hire-success {
     display: none;
     text-align: center;
     padding: 3rem 1rem;
 }

 .hs-icon {
     font-size: 3rem;
     margin-bottom: 0.8rem;
 }

 .hs-title {
     font-family: var(--display);
     font-style: italic;
     font-size: 1.4rem;
     font-weight: 700;
     color: var(--ink);
     margin-bottom: 0.4rem;
 }

 .hs-msg {
     font-size: 0.82rem;
     color: var(--muted);
     line-height: 1.7;
 }

 /* ═══ FOOTER ═══ */
 footer {
     background: var(--ink);
     padding: 3rem;
     position: relative;
     z-index: 1;
 }

 .footer-inner {
     max-width: 1280px;
     margin: 0 auto;
     display: grid;
     grid-template-columns: 1.8fr 1fr 1fr 1fr;
     gap: 3rem;
 }

 .footer-brand {
     font-family: var(--display);
     font-style: italic;
     font-size: 1.5rem;
     font-weight: 800;
     color: #fff;
     margin-bottom: 0.3rem;
 }

 .footer-brand span {
     color: var(--gold2);
 }

 .footer-domain {
     font-family: var(--mono);
     font-size: 0.58rem;
     color: rgba(255, 255, 255, 0.25);
     margin-bottom: 0.8rem;
     letter-spacing: 0.05em;
 }

 .footer-desc {
     font-size: 0.76rem;
     color: rgba(255, 255, 255, 0.28);
     line-height: 1.75;
 }

 .footer-heading {
     font-family: var(--mono);
     font-size: 0.56rem;
     letter-spacing: 0.2em;
     text-transform: uppercase;
     color: rgba(255, 255, 255, 0.22);
     margin-bottom: 0.8rem;
     font-weight: 400;
 }

 .footer-list {
     list-style: none;
     display: flex;
     flex-direction: column;
     gap: 0.45rem;
 }

 .footer-list a {
     font-size: 0.77rem;
     color: rgba(255, 255, 255, 0.32);
     text-decoration: none;
     transition: color 0.18s;
 }

 .footer-list a:hover {
     color: var(--gold2);
 }

 .footer-bottom {
     max-width: 1280px;
     margin: 2rem auto 0;
     border-top: 1px solid rgba(255, 255, 255, 0.05);
     padding-top: 1.3rem;
     display: flex;
     justify-content: space-between;
     align-items: center;
     flex-wrap: wrap;
     gap: 0.5rem;
 }

 .footer-bottom p {
     font-family: var(--mono);
     font-size: 0.58rem;
     color: rgba(255, 255, 255, 0.2);
 }

 .footer-bottom span {
     color: var(--gold2);
 }

 /* ═══ FLOAT CTA ═══ */
 .float-hire {
     position: fixed;
     bottom: 1.5rem;
     right: 1.5rem;
     z-index: 80;
     background: var(--gold);
     color: #fff;
     border: none;
     border-radius: 50px;
     padding: 0.72rem 1.3rem;
     font-family: var(--sans);
     font-size: 0.8rem;
     font-weight: 700;
     cursor: pointer;
     box-shadow: 0 6px 24px rgba(200, 146, 10, 0.4);
     transition: all 0.35s ease;
     opacity: 0;
     transform: translateY(20px);
     pointer-events: none;
     text-decoration: none;
     display: flex;
     align-items: center;
     gap: 0.4rem;
 }

 .float-hire.show {
     opacity: 1;
     transform: translateY(0);
     pointer-events: auto;
 }

 .float-hire:hover {
     background: var(--gold2);
     transform: translateY(-3px);
 }

 /* ═══ FADE ═══ */
 .fade {
     opacity: 0;
     transform: translateY(22px);
     transition: opacity 0.65s ease, transform 0.65s ease;
 }

 .fade.in {
     opacity: 1;
     transform: translateY(0);
 }

 .fade[data-d="1"] {
     transition-delay: 0.1s;
 }

 .fade[data-d="2"] {
     transition-delay: 0.2s;
 }

 /* ═══ RESPONSIVE ═══ */
 /* ═══════════════════════════════════════════
   DATA SCIENCE MASTERY API SECTION
   Digital Assets → Money Making Machine
═══════════════════════════════════════════ */

 /* Hero banner for DS section */
 .ds-hero-banner {
     background: var(--ink);
     padding: 5rem 3rem 3rem;
     position: relative;
     z-index: 1;
     overflow: hidden;
 }

 .ds-hero-banner::before {
     content: '';
     position: absolute;
     inset: 0;
     background-image:
         linear-gradient(rgba(200, 146, 10, 0.04) 1px, transparent 1px),
         linear-gradient(90deg, rgba(200, 146, 10, 0.04) 1px, transparent 1px);
     background-size: 44px 44px;
     pointer-events: none;
 }

 .ds-hero-banner::after {
     content: '';
     position: absolute;
     inset: 0;
     background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(200, 146, 10, 0.1) 0%, transparent 70%);
     pointer-events: none;
 }

 .ds-hero-inner {
     max-width: 1280px;
     margin: 0 auto;
     position: relative;
     z-index: 1;
 }

 /* Marquee ticker */
 .ds-ticker {
     overflow: hidden;
     border-top: 1px solid rgba(200, 146, 10, 0.2);
     border-bottom: 1px solid rgba(200, 146, 10, 0.2);
     padding: 0.6rem 0;
     margin-bottom: 3rem;
     background: rgba(200, 146, 10, 0.04);
 }

 .ds-ticker-inner {
     display: flex;
     gap: 3rem;
     animation: ticker-scroll 30s linear infinite;
     white-space: nowrap;
 }

 @keyframes ticker-scroll {
     0% {
         transform: translateX(0);
     }

     100% {
         transform: translateX(-50%);
     }
 }

 .ds-ticker-item {
     font-family: var(--mono);
     font-size: 0.62rem;
     font-weight: 400;
     color: rgba(200, 146, 10, 0.7);
     letter-spacing: 0.12em;
     text-transform: uppercase;
     display: flex;
     align-items: center;
     gap: 0.5rem;
     flex-shrink: 0;
 }

 .ds-ticker-item::before {
     content: '✦';
     color: var(--gold);
 }

 /* DS section header grid */
 .ds-header-grid {
     display: grid;
     grid-template-columns: 1fr 420px;
     gap: 4rem;
     align-items: start;
     margin-bottom: 3.5rem;
 }

 .ds-section-tag {
     font-family: var(--mono);
     font-size: 0.62rem;
     letter-spacing: 0.22em;
     text-transform: uppercase;
     color: var(--gold);
     margin-bottom: 0.7rem;
     display: flex;
     align-items: center;
     gap: 0.6rem;
 }

 .ds-section-tag::before {
     content: '✦';
     color: rgba(200, 146, 10, 0.4);
 }

 h2.ds-sh {
     font-family: var(--display);
     font-size: clamp(2.2rem, 4vw, 3.8rem);
     font-weight: 800;
     font-style: italic;
     line-height: 1.02;
     color: #fff;
     margin-bottom: 0.6rem;
 }

 h2.ds-sh em {
     font-style: normal;
     color: var(--gold2);
 }

 .ds-sd {
     font-size: 0.95rem;
     color: rgba(255, 255, 255, 0.4);
     line-height: 1.78;
     margin-bottom: 1.5rem;
 }

 /* Status pills */
 .ds-status-row {
     display: flex;
     gap: 0.6rem;
     flex-wrap: wrap;
 }

 .ds-status-pill {
     display: flex;
     align-items: center;
     gap: 0.4rem;
     border: 1px solid rgba(255, 255, 255, 0.1);
     padding: 0.32rem 0.85rem;
     border-radius: 100px;
     font-family: var(--mono);
     font-size: 0.6rem;
     color: rgba(255, 255, 255, 0.4);
 }

 .ds-status-pill .ds-dot {
     width: 6px;
     height: 6px;
     border-radius: 50%;
     background: var(--green);
     animation: pulse 2s infinite;
 }

 /* Right side: Money Making metrics */
 .ds-money-card {
     background: rgba(255, 255, 255, 0.04);
     border: 1px solid rgba(200, 146, 10, 0.25);
     border-radius: 12px;
     padding: 1.6rem;
 }

 .dmc-title {
     font-family: var(--mono);
     font-size: 0.6rem;
     letter-spacing: 0.18em;
     text-transform: uppercase;
     color: rgba(200, 146, 10, 0.6);
     margin-bottom: 1.2rem;
     display: flex;
     align-items: center;
     gap: 0.5rem;
 }

 .dmc-title::before {
     content: '$';
     font-size: 0.9rem;
     color: var(--gold);
 }

 .dmc-streams {
     display: flex;
     flex-direction: column;
     gap: 0.55rem;
     margin-bottom: 1.2rem;
 }

 .dmc-row {
     display: flex;
     align-items: center;
     justify-content: space-between;
     gap: 0.5rem;
     background: rgba(255, 255, 255, 0.04);
     border: 1px solid rgba(255, 255, 255, 0.06);
     border-radius: 7px;
     padding: 0.65rem 1rem;
 }

 .dmc-label {
     font-size: 0.78rem;
     font-weight: 500;
     color: rgba(255, 255, 255, 0.7);
 }

 .dmc-label small {
     display: block;
     font-size: 0.62rem;
     color: rgba(255, 255, 255, 0.28);
     font-weight: 400;
     margin-top: 1px;
 }

 .dmc-earn {
     font-family: var(--mono);
     font-size: 0.82rem;
     color: var(--gold2);
 }

 .dmc-total {
     background: rgba(200, 146, 10, 0.1);
     border: 1px solid rgba(200, 146, 10, 0.3);
     border-radius: 7px;
     padding: 0.9rem 1rem;
     display: flex;
     justify-content: space-between;
     align-items: center;
 }

 .dmc-total-label {
     font-family: var(--mono);
     font-size: 0.58rem;
     letter-spacing: 0.15em;
     text-transform: uppercase;
     color: rgba(255, 255, 255, 0.35);
 }

 .dmc-total-val {
     font-family: var(--display);
     font-size: 1.8rem;
     font-style: italic;
     font-weight: 800;
     color: var(--gold2);
     line-height: 1;
 }

 /* AI roadmap section inside DS */
 .ds-ai-section {
     background: rgba(255, 255, 255, 0.03);
     border: 1px solid rgba(255, 255, 255, 0.07);
     border-radius: 10px;
     padding: 1.3rem;
     margin-bottom: 3.5rem;
 }

 .ds-ai-header {
     display: flex;
     align-items: center;
     gap: 1rem;
     margin-bottom: 1rem;
 }

 .ds-ai-icon {
     width: 36px;
     height: 36px;
     border-radius: 7px;
     background: linear-gradient(135deg, var(--sepia2), var(--gold));
     display: flex;
     align-items: center;
     justify-content: center;
     font-size: 1rem;
     flex-shrink: 0;
 }

 .ds-ai-name {
     font-weight: 600;
     color: #fff;
     font-size: 0.88rem;
 }

 .ds-ai-sub {
     font-family: var(--mono);
     font-size: 0.58rem;
     color: rgba(255, 255, 255, 0.3);
     margin-top: 1px;
 }

 .ds-ai-live {
     margin-left: auto;
     font-family: var(--mono);
     font-size: 0.6rem;
     color: rgba(255, 255, 255, 0.3);
     display: flex;
     align-items: center;
     gap: 0.4rem;
 }

 .ds-ai-live::before {
     content: '';
     width: 6px;
     height: 6px;
     border-radius: 50%;
     background: var(--green);
     animation: pulse 2s infinite;
 }

 .ds-quick-chips {
     display: flex;
     flex-wrap: wrap;
     gap: 0.4rem;
     margin-bottom: 0.9rem;
 }

 .ds-chip {
     font-family: var(--sans);
     font-size: 0.7rem;
     font-weight: 500;
     background: rgba(255, 255, 255, 0.04);
     border: 1px solid rgba(255, 255, 255, 0.09);
     border-radius: 100px;
     padding: 0.35rem 0.8rem;
     color: rgba(255, 255, 255, 0.45);
     cursor: pointer;
     transition: all 0.18s;
     letter-spacing: 0.02em;
 }

 .ds-chip:hover {
     border-color: var(--gold);
     color: var(--gold);
     background: rgba(200, 146, 10, 0.08);
 }

 .ds-ai-input-row {
     display: flex;
     gap: 0.7rem;
     margin-bottom: 0.9rem;
 }

 .ds-ai-input {
     flex: 1;
     background: rgba(255, 255, 255, 0.06);
     border: 1.5px solid rgba(255, 255, 255, 0.1);
     border-radius: 8px;
     padding: 0.75rem 1rem;
     color: #fff;
     font-family: var(--sans);
     font-size: 0.88rem;
     outline: none;
     transition: border-color 0.2s;
 }

 .ds-ai-input:focus {
     border-color: var(--gold);
 }

 .ds-ai-input::placeholder {
     color: rgba(255, 255, 255, 0.22);
 }

 .ds-ai-send {
     background: var(--gold);
     border: none;
     border-radius: 8px;
     padding: 0.75rem 1.4rem;
     color: var(--ink);
     font-family: var(--sans);
     font-size: 0.85rem;
     font-weight: 700;
     cursor: pointer;
     transition: all 0.18s;
     white-space: nowrap;
 }

 .ds-ai-send:hover {
     background: var(--gold2);
 }

 .ds-ai-send:disabled {
     opacity: 0.4;
     cursor: not-allowed;
 }

 .ds-ai-output {
     background: rgba(0, 0, 0, 0.25);
     border: 1px solid rgba(255, 255, 255, 0.07);
     border-radius: 9px;
     padding: 1.2rem;
     min-height: 120px;
     font-size: 0.87rem;
     line-height: 1.82;
     color: rgba(255, 255, 255, 0.75);
     white-space: pre-wrap;
 }

 /* ═══ 10 MODULES GRID ═══ */
 .ds-modules-section {
     background: var(--aged);
     padding: 5rem 3rem;
     border-top: 1px solid var(--border);
     border-bottom: 1px solid var(--border);
     position: relative;
     z-index: 1;
 }

 .ds-modules-inner {
     max-width: 1280px;
     margin: 0 auto;
 }

 /* Module accordion */
 .ds-modules-list {
     display: flex;
     flex-direction: column;
     gap: 0;
     border: 1px solid var(--border);
     border-radius: 12px;
     overflow: hidden;
 }

 details.ds-module {
     border-bottom: 1px solid var(--border);
     overflow: hidden;
 }

 details.ds-module:last-child {
     border-bottom: none;
 }

 details.ds-module[open] {
     border-bottom: 2px solid var(--gold);
 }

 details.ds-module summary {
     list-style: none;
     display: grid;
     grid-template-columns: 3.2rem 1fr auto 6rem 1.2rem;
     align-items: center;
     gap: 1rem;
     padding: 1.1rem 1.5rem;
     cursor: pointer;
     background: var(--parch);
     transition: background 0.18s;
     user-select: none;
 }

 details.ds-module summary::-webkit-details-marker {
     display: none;
 }

 details.ds-module summary:hover {
     background: var(--aged);
 }

 details.ds-module[open] summary {
     background: var(--aged);
 }

 .dm-num {
     font-family: var(--mono);
     font-size: 0.62rem;
     color: var(--soft);
     letter-spacing: 0.08em;
 }

 .dm-title {
     font-family: var(--display);
     font-size: 1.05rem;
     font-weight: 700;
     color: var(--ink);
     letter-spacing: -0.01em;
     display: flex;
     align-items: center;
     gap: 0.6rem;
 }

 .dm-title .dm-emoji {
     font-style: normal;
     font-size: 1.1rem;
 }

 .dm-badge-row {
     display: flex;
     gap: 0.4rem;
     justify-content: flex-end;
     flex-wrap: wrap;
 }

 .dm-count {
     font-family: var(--mono);
     font-size: 0.62rem;
     color: var(--muted);
 }

 .dm-chevron {
     color: var(--muted);
     font-size: 0.65rem;
     transition: transform 0.3s ease, color 0.2s;
 }

 details.ds-module[open] .dm-chevron {
     transform: rotate(90deg);
     color: var(--gold);
 }

 /* Module body */
 .dm-body {
     padding: 1.4rem 1.5rem 1.8rem;
     border-top: 1px solid var(--border);
     background: var(--parch);
     animation: dm-open 0.28s ease;
 }

 @keyframes dm-open {
     from {
         opacity: 0;
         transform: translateY(-6px);
     }

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

 .dm-section-label {
     font-family: var(--mono);
     font-size: 0.58rem;
     letter-spacing: 0.2em;
     text-transform: uppercase;
     color: var(--soft);
     margin-bottom: 0.7rem;
     margin-top: 0.2rem;
 }

 /* Resource buttons */
 .dm-resources {
     display: flex;
     flex-wrap: wrap;
     gap: 0.45rem;
     margin-bottom: 0.8rem;
 }

 .dm-res {
     display: inline-flex;
     align-items: center;
     gap: 0.5rem;
     padding: 0.42rem 0.9rem;
     border: 1px solid var(--border);
     border-radius: 4px;
     font-family: var(--sans);
     font-size: 0.78rem;
     color: var(--ink2);
     text-decoration: none;
     transition: all 0.18s;
     background: rgba(232, 220, 200, 0.3);
 }

 .dm-res:hover {
     border-color: var(--gold);
     background: rgba(200, 146, 10, 0.07);
     color: var(--sepia2);
 }

 /* Resource type badges */
 .dm-tag {
     font-family: var(--mono);
     font-size: 0.5rem;
     letter-spacing: 0.08em;
     text-transform: uppercase;
     padding: 0.1rem 0.38rem;
     border-radius: 2px;
     font-weight: 500;
 }

 .dm-tag-free {
     background: rgba(26, 90, 48, 0.12);
     color: var(--green);
     border: 1px solid rgba(26, 90, 48, 0.2);
 }

 .dm-tag-course {
     background: rgba(139, 58, 26, 0.1);
     color: var(--red);
     border: 1px solid rgba(139, 58, 26, 0.18);
 }

 .dm-tag-ref {
     background: rgba(200, 146, 10, 0.12);
     color: var(--gold);
     border: 1px solid rgba(200, 146, 10, 0.2);
 }

 .dm-tag-book {
     background: rgba(26, 21, 16, 0.08);
     color: var(--muted);
     border: 1px solid var(--border);
 }

 /* Micro links */
 .dm-micro-row {
     display: flex;
     flex-wrap: wrap;
     gap: 0.8rem;
     margin-top: 0.4rem;
 }

 .dm-micro {
     font-family: var(--sans);
     font-size: 0.74rem;
     font-style: italic;
     color: var(--muted);
     text-decoration: none;
     border-bottom: 1px dotted var(--border2);
     padding-bottom: 1px;
     transition: color 0.15s, border-color 0.15s;
 }

 .dm-micro:hover {
     color: var(--sepia2);
     border-color: var(--gold);
 }

 /* AI Ask per module */
 .dm-ask-row {
     margin-top: 1rem;
     padding-top: 1rem;
     border-top: 1px dashed var(--border);
 }

 .dm-ask-btn {
     background: rgba(200, 146, 10, 0.08);
     border: 1px solid rgba(200, 146, 10, 0.25);
     border-radius: 6px;
     padding: 0.52rem 1rem;
     font-family: var(--sans);
     font-size: 0.75rem;
     font-weight: 600;
     color: var(--gold);
     cursor: pointer;
     transition: all 0.18s;
     letter-spacing: 0.04em;
 }

 .dm-ask-btn:hover {
     background: rgba(200, 146, 10, 0.16);
     border-color: rgba(200, 146, 10, 0.5);
 }

 .dm-ask-output {
     margin-top: 0.8rem;
     background: var(--aged);
     border: 1px solid var(--border);
     border-radius: 7px;
     padding: 1rem;
     font-size: 0.83rem;
     line-height: 1.78;
     color: var(--ink2);
     display: none;
     white-space: pre-wrap;
 }

 .dm-ask-output.visible {
     display: block;
 }

 .dm-thinking-row {
     display: none;
     align-items: center;
     gap: 5px;
     margin-top: 0.6rem;
     color: var(--soft);
     font-family: var(--mono);
     font-size: 0.62rem;
 }

 .dm-thinking-row.on {
     display: flex;
 }

 /* ═══ ROADMAP STRIP ═══ */
 .ds-roadmap-strip {
     background: var(--ink2);
     padding: 3rem;
     border-top: 1px solid rgba(255, 255, 255, 0.05);
     position: relative;
     z-index: 1;
 }

 .ds-roadmap-inner {
     max-width: 1280px;
     margin: 0 auto;
 }

 .ds-road-label {
     font-family: var(--mono);
     font-size: 0.6rem;
     letter-spacing: 0.2em;
     text-transform: uppercase;
     color: rgba(200, 146, 10, 0.5);
     margin-bottom: 1rem;
 }

 .ds-road-path {
     display: flex;
     flex-wrap: wrap;
     align-items: center;
     gap: 0;
     margin-bottom: 1.8rem;
 }

 .ds-road-node {
     font-size: 0.8rem;
     color: rgba(255, 255, 255, 0.5);
     font-style: italic;
 }

 .ds-road-node.highlight {
     color: var(--gold2);
     font-weight: 600;
     font-style: normal;
 }

 .ds-road-arrow {
     color: rgba(255, 255, 255, 0.18);
     font-size: 0.75rem;
     padding: 0 0.5rem;
 }

 /* Money potential grid */
 .ds-money-grid {
     display: grid;
     grid-template-columns: repeat(4, 1fr);
     gap: 1px;
     background: rgba(255, 255, 255, 0.05);
     border: 1px solid rgba(255, 255, 255, 0.05);
     border-radius: 10px;
     overflow: hidden;
 }

 .ds-money-cell {
     background: rgba(255, 255, 255, 0.03);
     padding: 1.2rem;
 }

 .dmc-skill {
     font-family: var(--mono);
     font-size: 0.6rem;
     letter-spacing: 0.1em;
     text-transform: uppercase;
     color: var(--gold);
     margin-bottom: 0.3rem;
 }

 .dmc-how {
     font-size: 0.82rem;
     font-weight: 600;
     color: #fff;
     margin-bottom: 0.25rem;
 }

 .dmc-rate {
     font-family: var(--display);
     font-size: 1.3rem;
     font-style: italic;
     color: var(--gold2);
     line-height: 1;
     margin-bottom: 0.3rem;
 }

 .dmc-platform {
     font-size: 0.7rem;
     color: rgba(255, 255, 255, 0.3);
     line-height: 1.5;
 }

 @media(max-width:1024px) {
     .ds-header-grid {
         grid-template-columns: 1fr;
     }

     .ds-modules-section {
         padding: 3.5rem 1.5rem;
     }

     .ds-hero-banner {
         padding: 3.5rem 1.5rem;
     }

     .ds-roadmap-strip {
         padding: 2.5rem 1.5rem;
     }

     .ds-money-grid {
         grid-template-columns: 1fr 1fr;
     }

     details.ds-module summary {
         grid-template-columns: 2.5rem 1fr 1rem;
     }

     .dm-count,
     .dm-badge-row {
         display: none;
     }
 }

 @media(max-width:640px) {
     .ds-money-grid {
         grid-template-columns: 1fr;
     }
 }

 @media(max-width:1024px) {
     .hero {
         grid-template-columns: 1fr;
         min-height: auto;
         padding: 3.5rem 1.5rem;
     }

     .services-2col {
         grid-template-columns: 1fr;
     }

     .tuition-grid {
         grid-template-columns: 1fr 1fr;
     }

     .portfolio-masonry {
         grid-template-columns: 1fr 1fr;
     }

     .phases {
         grid-template-columns: 1fr 1fr;
     }

     .hire-inner {
         grid-template-columns: 1fr;
     }

     .footer-inner {
         grid-template-columns: 1fr 1fr;
     }

     nav {
         padding: 0 1.5rem;
     }

     .nav-items {
         display: none;
     }

     .section {
         padding: 3.5rem 1.5rem;
     }

     .full-section,
     .roadmap-section,
     .hire-section {
         padding: 3.5rem 1.5rem;
     }

     .stats-row {
         flex-wrap: wrap;
         padding: 1.2rem;
     }

     .stat-block {
         flex: 0 0 40%;
         border-right: none;
     }

     .income-input-box {
         grid-template-columns: 1fr;
     }

     footer {
         padding: 2.5rem 1.5rem;
     }
 }

 @media(max-width:640px) {
     .tuition-grid {
         grid-template-columns: 1fr;
     }

     .portfolio-masonry {
         grid-template-columns: 1fr;
     }

     .phases {
         grid-template-columns: 1fr;
     }

     .fg {
         grid-template-columns: 1fr;
     }

     .footer-inner {
         grid-template-columns: 1fr;
     }

     .vinci-divider,
     .vinci-rule {
         padding: 0 1.5rem;
     }
 }