/* ══════════════════════════════════════════════
   FOUNDRY STUDIO — MOBILE-FIRST CSS
   Base = 1 column (mobile). min-width queries add columns.
   ══════════════════════════════════════════════ */

:root {
    --c-bg: #F4F2ED;
    --c-text: #0D0D0D;
    --c-red: #FF2E4C;
    --c-yellow: #FFD93D;
    --c-orange: #FF9642;
    --c-blue: #2B95D6;
    --c-green: #00A876;
    --c-tan: #D4CCC0;
    --c-tan-light: #E8E3DA;
    --c-grey: #B8B2A6;
    --font-main: "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-mono: "Courier New", Courier, monospace;

    /* ── FLUID SPACING TOKENS ── */
    --space-xs: clamp(0.5rem, 0.3rem + 0.5vw, 0.75rem);
    --space-sm: clamp(0.75rem, 0.5rem + 0.8vw, 1.25rem);
    --space-md: clamp(1.25rem, 0.8rem + 1.5vw, 2rem);
    --space-lg: clamp(1.75rem, 1rem + 2.5vw, 3rem);
    --space-xl: clamp(2.5rem, 1.5rem + 3.5vw, 3.75rem);
    --space-2xl: clamp(3rem, 1.5rem + 5vw, 5rem);

    --pad-x: clamp(1.25rem, 0.5rem + 3vw, 3rem);
    --pad-x-lg: clamp(1.25rem, 0.5rem + 4vw, 3.75rem);
    --pad-section-top: clamp(2.5rem, 1.5rem + 3.5vw, 3.75rem);
    --pad-section-bot: clamp(1rem, 0.5rem + 1.5vw, 1.25rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-font-smoothing: antialiased; }

body {
    background-color: var(--c-bg);
    font-family: var(--font-main);
    color: var(--c-text);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ── UTILITY ── */
.label {
    font-size: clamp(0.68rem, 0.65rem + 0.15vw, 0.75rem);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    display: block;
    margin-bottom: var(--space-xs);
}
.mono {
    font-family: var(--font-main);
    font-size: clamp(0.78rem, 0.72rem + 0.2vw, 0.85rem);
    opacity: 0.5;
}
.border-b { border-bottom: 1px solid rgba(0,0,0,0.08); }
.border-r { border-right: none; }

h1 {
    font-size: clamp(2.2rem, 1.2rem + 4vw, 4.5rem);
    font-weight: 400;
    letter-spacing: -0.04em;
    line-height: 0.92;
    margin-bottom: var(--space-sm);
}
h2 {
    font-size: clamp(1.6rem, 1rem + 2.5vw, 2.8rem);
    font-weight: 400;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: var(--space-sm);
}
h2.compare-heading {
    font-size: clamp(1.2rem, 0.9rem + 1vw, 1.6rem);
    margin-bottom: 0;
}
h3 {
    font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1rem);
    font-weight: 600;
    margin-bottom: 0.5rem;
}
p { line-height: 1.5; }
a { color: inherit; }

/* ── BUTTONS (mobile base: full width) ── */
.btn {
    display: block;
    width: 100%;
    text-align: center;
    padding: clamp(1rem, 0.8rem + 0.8vw, 1.25rem) clamp(1.5rem, 1rem + 2vw, 2.75rem);
    background: var(--c-text);
    color: var(--c-bg);
    text-decoration: none;
    font-weight: 600;
    font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 3.5rem;
}
.btn:hover { background: var(--c-blue); transform: translateY(-2px); }
.btn-outline {
    display: block;
    width: 100%;
    text-align: center;
    background: transparent;
    border: 2px solid var(--c-text);
    color: var(--c-text);
    margin-left: 0;
    margin-top: var(--space-xs);
    min-height: 3.5rem;
}
.btn-outline:hover { background: var(--c-text); color: var(--c-bg); }

/* ══════════════════════════════════════════════
   GRID — MOBILE FIRST (base = 1 column)
   ══════════════════════════════════════════════ */
.grid {
    display: grid;
    grid-template-columns: 1fr;
    max-width: 1440px;
    margin: 0 auto;
    overflow-x: hidden;
}

.cell {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* ── NAV (mobile base: sticky, no links) ── */
.nav {
    grid-column: span 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: clamp(0.75rem, 0.5rem + 0.8vw, 1.75rem) var(--pad-x);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--c-bg);
}
.nav-logo { display: flex; align-items: center; gap: 0.5rem; font-weight: 800; font-size: clamp(1.15rem, 1rem + 0.4vw, 1.4rem); letter-spacing: -0.04em; text-decoration: none; color: inherit; }
.nav-logo svg { height: 0.9em; width: auto; }
.nav-links { display: none; }
.nav-links a { text-decoration: none; font-size: clamp(0.82rem, 0.78rem + 0.15vw, 0.9rem); font-weight: 500; opacity: 0.7; transition: opacity 0.2s; }
.nav-links a:hover { opacity: 1; }
.nav-cta { font-size: 0.85rem !important; opacity: 1 !important; padding: 0.625rem 1.5rem; background: var(--c-red); color: var(--c-bg); text-decoration: none; font-weight: 600; transition: background 0.2s ease; }
.nav-cta:hover { background: var(--c-text); }
.nav-cta-mobile { display: block; font-size: 0.8rem; padding: 0.5rem 1rem; background: var(--c-red); color: var(--c-bg); text-decoration: none; font-weight: 600; transition: background 0.2s ease; }
.nav-cta-mobile:active { background: var(--c-text); }

/* ── HERO (mobile base: single column, stacked) ── */
.hero-main {
    grid-column: span 1;
    padding: var(--space-2xl) var(--pad-x-lg) var(--space-xl);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: auto;
}
.hero-main p {
    font-size: clamp(1rem, 0.9rem + 0.4vw, 1.25rem);
    max-width: 500px;
    opacity: 0.7;
    margin-bottom: var(--space-md);
}
.hero-accent {
    grid-column: span 1;
    background: var(--c-red);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-lg);
    min-height: auto;
    gap: var(--space-xs);
}
.hero-accent .price {
    font-family: var(--font-mono);
    font-size: clamp(2.5rem, 1.5rem + 3vw, 4rem);
    font-weight: 400;
    margin-bottom: 0.5rem;
}
.hero-accent .price-sub { font-size: 0.9rem; opacity: 0.85; }

/* ── COMPARE (mobile: single column, stacked) ── */
.compare-them {
    grid-column: span 1;
    background: var(--c-tan-light);
    padding: var(--pad-x);
    min-height: auto;
}
.compare-us {
    grid-column: span 1;
    background: var(--c-tan);
    padding: var(--pad-x);
    min-height: auto;
}
.compare-list { list-style: none; margin-top: var(--space-sm); }
.compare-list li {
    padding: clamp(0.5rem, 0.4rem + 0.3vw, 0.625rem) 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    font-size: clamp(0.88rem, 0.85rem + 0.15vw, 0.95rem);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}
.compare-list li::before { font-family: var(--font-mono); font-size: 0.8rem; opacity: 0.5; }
.compare-them .compare-list li::before { content: '\2715'; color: var(--c-red); opacity: 1; }
.compare-us .compare-list li::before { content: '\2192'; color: var(--c-green); opacity: 1; }

/* ── SECTION HEADERS ── */
.section-header {
    grid-column: span 1;
    padding: var(--pad-section-top) var(--pad-x) var(--pad-section-bot);
    border-top: 1px solid rgba(0,0,0,0.08);
}

/* ── FEATURES (mobile: single column, no right borders) ── */
.feature-card {
    grid-column: span 1;
    padding: var(--pad-x);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: auto;
    transition: background 0.3s;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    border-right: none;
}
.feature-card:hover { background: rgba(0,0,0,0.02); }
.feature-icon { font-size: clamp(1.3rem, 1.1rem + 0.5vw, 1.6rem); margin-bottom: var(--space-sm); }
.feature-card h3 { font-size: clamp(1rem, 0.95rem + 0.3vw, 1.15rem); font-weight: 600; margin-bottom: 0.5rem; }
.feature-card p { font-size: clamp(0.85rem, 0.82rem + 0.15vw, 0.9rem); opacity: 0.65; max-width: 280px; }
.feature-num {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    opacity: 0.35;
    margin-bottom: clamp(0.75rem, 0.5rem + 0.8vw, 1.25rem);
}

/* ── SKILLS (mobile: single column) ── */
.skills-header {
    grid-column: span 1;
    padding: var(--pad-section-top) var(--pad-x) var(--pad-section-bot);
    border-top: 1px solid rgba(0,0,0,0.08);
}
.skill-card {
    grid-column: span 1;
    padding: var(--space-lg);
    min-height: auto;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: none;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.375rem; margin-top: var(--space-sm); }
.skill-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.25rem 0.625rem;
    background: rgba(0,0,0,0.05);
    letter-spacing: 0.02em;
}
.skill-card.bg-blue .skill-tag { background: rgba(255,255,255,0.2); color: white; }

/* Stat block (3K+ skills counter) */
.stat-block {
    grid-column: span 1;
    background: var(--c-tan-light);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.stat-number {
    font-family: var(--font-mono);
    font-size: clamp(1.8rem, 1.2rem + 2vw, 2.5rem);
    opacity: 0.3;
}

/* ── HOW IT WORKS (mobile: single column) ── */
.how-header {
    grid-column: span 1;
    padding: var(--pad-section-top) var(--pad-x) var(--pad-section-bot);
    border-top: 1px solid rgba(0,0,0,0.08);
}
.step-block {
    grid-column: span 1;
    padding: var(--space-lg);
    min-height: auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    border-right: none;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.step-num {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.4;
    margin-bottom: var(--space-sm);
}
.step-block h3 {
    font-size: clamp(1.1rem, 1rem + 0.4vw, 1.3rem);
    font-weight: 500;
    margin-bottom: 0.5rem;
}
.step-block p { font-size: clamp(0.82rem, 0.8rem + 0.15vw, 0.88rem); opacity: 0.6; }

/* ── TERMINAL (mobile: single column, stacked) ── */
.terminal-section {
    grid-column: span 1;
    background: var(--c-text);
    color: var(--c-bg);
    padding: var(--pad-x);
    font-family: var(--font-mono);
    font-size: clamp(0.75rem, 0.65rem + 0.35vw, 0.88rem);
    line-height: 1.8;
    min-height: auto;
    overflow-x: auto;
}
.t-comment { opacity: 0.35; }
.t-success { color: var(--c-green); }
.t-prompt { opacity: 0.5; }
.terminal-status {
    grid-column: span 1;
    background: var(--c-green);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-lg);
    min-height: auto;
}
.terminal-status .mono { color: white; opacity: 0.8; font-size: 0.8rem; }

/* ── TELEGRAM GUIDE (mobile: single column) ── */
.tg-header {
    grid-column: span 1;
    padding: var(--pad-section-top) var(--pad-x) var(--pad-section-bot);
    border-top: 1px solid rgba(0,0,0,0.08);
}
.tg-step {
    grid-column: span 1;
    padding: var(--space-md) var(--space-lg);
    border-right: none;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.tg-step h3 { margin-bottom: 0.5rem; }
.tg-step p { font-size: clamp(0.82rem, 0.8rem + 0.15vw, 0.88rem); opacity: 0.65; }
.tg-step code {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    background: rgba(0,0,0,0.06);
    padding: 0.125rem 0.375rem;
}
.tg-accent {
    grid-column: span 1;
    background: var(--c-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    text-align: center;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

/* ── PRICING (mobile: single column) ── */
.pricing-section {
    grid-column: span 1;
    display: grid;
    grid-template-columns: 1fr;
    border-top: 1px solid rgba(0,0,0,0.08);
}
.pricing-left {
    grid-column: span 1;
    padding: var(--space-xl) var(--pad-x);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.pricing-right {
    grid-column: span 1;
    background: var(--c-tan-light);
    padding: var(--space-xl) var(--pad-x);
}
.price-big {
    font-family: var(--font-mono);
    font-size: clamp(2.8rem, 2rem + 3.5vw, 5rem);
    font-weight: 400;
    letter-spacing: -0.04em;
    line-height: 1;
}
.price-period { font-size: clamp(0.95rem, 0.9rem + 0.2vw, 1.1rem); opacity: 0.5; margin-top: 0.25rem; }
.price-trial { font-size: 0.9rem; opacity: 0.6; margin-top: 0.5rem; }
.pricing-features { list-style: none; margin-top: var(--space-xs); }
.pricing-features li {
    padding: clamp(0.5rem, 0.4rem + 0.3vw, 0.625rem) 0;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    font-size: clamp(0.85rem, 0.82rem + 0.15vw, 0.92rem);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}
.pricing-features li::before {
    content: '\2192';
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--c-green);
}

/* ── FAQ ── */
.faq-section {
    grid-column: span 1;
    border-top: 1px solid rgba(0,0,0,0.08);
}
.faq-header { padding: var(--pad-section-top) var(--pad-x) var(--pad-section-bot); }
.faq-item {
    padding: 0 var(--pad-x);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.faq-q {
    padding: clamp(1rem, 0.8rem + 0.5vw, 1.25rem) 0;
    font-size: clamp(0.9rem, 0.88rem + 0.15vw, 1rem);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-q::after {
    content: '+';
    font-family: var(--font-mono);
    font-size: 1.2rem;
    opacity: 0.4;
    transition: transform 0.2s;
}
.faq-item.open .faq-q::after { content: '\2212'; }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.open .faq-a { max-height: 300px; }
.faq-a p { font-size: clamp(0.85rem, 0.82rem + 0.15vw, 0.9rem); opacity: 0.65; padding-bottom: var(--space-sm); max-width: 680px; }

/* ── CUSTOM SETUP CTA (mobile: single column) ── */
.custom-cta-section {
    grid-column: span 1;
    display: grid;
    grid-template-columns: 1fr;
    border-top: 1px solid rgba(0,0,0,0.08);
}
.custom-cta-main {
    grid-column: span 1;
    padding: var(--space-2xl) var(--pad-x-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.custom-cta-accent {
    grid-column: span 1;
    background: var(--c-orange);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-lg);
}

/* ── FINAL CTA (mobile: single column) ── */
.cta-section {
    grid-column: span 1;
    display: grid;
    grid-template-columns: 1fr;
    border-top: 1px solid rgba(0,0,0,0.08);
}
.cta-main {
    grid-column: span 1;
    padding: var(--space-2xl) var(--pad-x-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.cta-accent {
    grid-column: span 1;
    background: var(--c-blue);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-lg);
}

/* ── FOOTER (mobile: stacked) ── */
.footer {
    grid-column: span 1;
    padding: clamp(1rem, 0.8rem + 0.8vw, 1.75rem) var(--pad-x);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
    border-top: 1px solid rgba(0,0,0,0.08);
}

/* ══════════════════════════════════════════════
   STUDIO DIRECTION — hero, work, thesis, services, case study
   Mobile-first. Tablet/desktop overrides live in media queries below.
   ══════════════════════════════════════════════ */

/* ── HERO (full-width, text-forward) ── */
.hero-full {
    grid-column: span 1;
    padding: var(--space-2xl) var(--pad-x-lg) var(--space-xl);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: auto;
}
.hero-huge {
    font-size: clamp(2rem, 1rem + 5vw, 5.25rem);
    font-weight: 400;
    letter-spacing: -0.035em;
    line-height: 1;
    margin-bottom: var(--space-md);
    max-width: 22ch;
}
.hero-sub {
    font-size: clamp(1rem, 0.9rem + 0.5vw, 1.3rem);
    opacity: 0.55;
    max-width: 44ch;
    line-height: 1.4;
}

/* ── WORK (case study grid) ── */
.work-header {
    grid-column: span 1;
    padding: var(--pad-section-top) var(--pad-x) var(--pad-section-bot);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.case-tile {
    grid-column: span 1;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    transition: background 0.2s ease;
}
.case-tile:hover { background: rgba(0,0,0,0.02); }
.case-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 0.2s ease;
}
.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.case-tile:hover .case-image { opacity: 0.9; }
.case-image--aeterna {
    background: var(--c-text);
    color: var(--c-bg);
}
.case-image-name {
    font-family: var(--font-main);
    font-size: clamp(1.5rem, 0.5rem + 5vw, 4rem);
    letter-spacing: 0.2em;
    font-weight: 400;
    opacity: 0.7;
}
.case-meta {
    padding: var(--space-md) var(--pad-x);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.case-name {
    font-size: clamp(1.15rem, 1rem + 0.5vw, 1.5rem);
    font-weight: 500;
    letter-spacing: -0.02em;
}
.case-kind {
    font-family: var(--font-main);
    font-size: clamp(0.72rem, 0.68rem + 0.15vw, 0.8rem);
    opacity: 0.5;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ── THESIS ── */
.thesis-block {
    grid-column: span 1;
    padding: var(--space-2xl) var(--pad-x-lg);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}
.thesis-text {
    font-size: clamp(1.2rem, 0.85rem + 1.4vw, 1.9rem);
    font-weight: 400;
    letter-spacing: -0.015em;
    line-height: 1.35;
    max-width: 44ch;
}

/* ── SERVICES ── */
.services-header {
    grid-column: span 1;
    padding: var(--pad-section-top) var(--pad-x) var(--pad-section-bot);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.service-row {
    grid-column: span 1;
    padding: var(--space-lg) var(--pad-x);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    border-left: 3px solid transparent;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    transition: background 0.2s ease, border-left-color 0.2s ease;
}
.service-row--red    { --row-color: var(--c-red); }
.service-row--blue   { --row-color: var(--c-blue); }
.service-row--green  { --row-color: var(--c-green); }
.service-row--orange { --row-color: var(--c-orange); }
.service-row:hover { background: rgba(0,0,0,0.02); border-left-color: var(--row-color, rgba(0,0,0,0.15)); }
.service-main { display: flex; flex-direction: column; gap: 0.4rem; }
.service-num {
    font-family: var(--font-main);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--row-color, rgba(0,0,0,0.35));
    letter-spacing: 0.05em;
}
.service-row h3.service-name {
    font-size: clamp(1.3rem, 0.95rem + 1.1vw, 2rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 0;
}
.service-desc {
    font-size: clamp(0.95rem, 0.9rem + 0.25vw, 1.1rem);
    opacity: 0.6;
    max-width: 52ch;
    line-height: 1.5;
}
.service-link {
    font-family: var(--font-main);
    font-size: clamp(0.8rem, 0.75rem + 0.2vw, 0.9rem);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-decoration: none;
    color: var(--c-text);
    align-self: flex-start;
    transition: color 0.2s ease;
}
.service-link:hover { color: var(--c-red); }

/* ── CASE STUDY PAGE ── */
.cs-hero {
    grid-column: span 1;
    width: 100%;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.cs-hero--aeterna {
    background: var(--c-text);
    color: var(--c-bg);
}
.cs-hero-name {
    font-family: var(--font-main);
    font-size: clamp(2rem, 1rem + 6vw, 6rem);
    letter-spacing: 0.22em;
    font-weight: 400;
    opacity: 0.75;
}
.cs-intro {
    grid-column: span 1;
    padding: var(--space-2xl) var(--pad-x-lg);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.cs-title {
    font-size: clamp(2.2rem, 1.2rem + 4vw, 5rem);
    font-weight: 400;
    letter-spacing: -0.035em;
    line-height: 1;
    margin-bottom: var(--space-sm);
}
.cs-desc {
    font-size: clamp(1rem, 0.9rem + 0.5vw, 1.3rem);
    opacity: 0.6;
    max-width: 52ch;
    line-height: 1.45;
}
.cs-section {
    grid-column: span 1;
    padding: var(--space-2xl) var(--pad-x);
    border-bottom: 1px solid rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}
.cs-section-title {
    font-size: clamp(1.4rem, 1rem + 1vw, 1.9rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 0;
}
.cs-block {
    width: 100%;
    aspect-ratio: 3 / 2;
    background: var(--c-tan-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-grey);
    font-family: var(--font-main);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.cs-block--dark { background: var(--c-text); color: rgba(255,255,255,0.3); }
.cs-block--square { aspect-ratio: 1 / 1; }
.cs-block-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}
.cs-back {
    grid-column: span 1;
    padding: var(--space-xl) var(--pad-x);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}
.cs-back a {
    font-family: var(--font-main);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-decoration: none;
    opacity: 0.6;
    transition: opacity 0.2s ease;
}
.cs-back a:hover { opacity: 1; }

/* ── SMALL MOBILE (<400px) ── */
@media (max-width: 400px) {
    .terminal-section { word-break: break-all; }
}

/* ══════════════════════════════════════════════
   TABLET: 810px+  (2 columns)
   ══════════════════════════════════════════════ */
@media (min-width: 810px) {
    .grid { grid-template-columns: repeat(2, 1fr); }
    .border-r { border-right: 1px solid rgba(0,0,0,0.08); }

    /* Nav — show links, unstick */
    .nav {
        grid-column: span 2;
        position: static;
    }
    .nav-links { display: flex; gap: clamp(1rem, 0.5rem + 1.5vw, 1.75rem); align-items: center; }
    .nav-cta-mobile { display: none; }

    /* Buttons — inline */
    .btn {
        display: inline-block;
        width: auto;
        text-align: center;
    }
    .btn-outline {
        display: inline-block;
        width: auto;
        margin-left: var(--space-xs);
        margin-top: 0;
    }

    /* Hero */
    .hero-main { grid-column: span 2; min-height: clamp(320px, 25vw + 120px, 480px); }
    .hero-accent { grid-column: span 2; flex-direction: row; gap: var(--space-md); justify-content: center; min-height: auto; }

    /* Compare */
    .compare-them, .compare-us { min-height: clamp(240px, 15vw + 100px, 320px); }

    /* Section headers */
    .section-header { grid-column: span 2; }
    #features, #skills, .skills-header, #how, .how-header,
    #telegram-setup, .tg-header, .faq-section, .faq-header, .faq-item { grid-column: span 2; }

    /* Features — 2-col with alternating right borders */
    .feature-card { min-height: clamp(200px, 12vw + 80px, 280px); }
    .feature-card:nth-child(odd) { border-right: 1px solid rgba(0,0,0,0.08); }

    /* Skills — 2-col */
    .skill-card { min-height: clamp(200px, 10vw + 100px, 260px); }
    .skill-card:nth-child(odd) { border-right: 1px solid rgba(0,0,0,0.08); }
    .stat-block { grid-column: span 2; }

    /* Steps — 2-col */
    .step-block:nth-child(odd) { border-right: 1px solid rgba(0,0,0,0.08); }
    .step-block { min-height: clamp(160px, 8vw + 80px, 200px); }

    /* Terminal */
    .terminal-section { grid-column: span 2; min-height: clamp(280px, 15vw + 120px, 360px); }
    .terminal-status { grid-column: span 2; flex-direction: row; gap: var(--space-md); }

    /* Telegram */
    .tg-accent { grid-column: span 2; }

    /* Pricing — 2-col */
    .pricing-section { grid-template-columns: 1fr 1fr; }

    /* Custom CTA — 3:1 */
    .custom-cta-section { grid-column: span 2; grid-template-columns: 3fr 1fr; }

    /* CTA — 3:1 */
    .cta-section { grid-template-columns: 3fr 1fr; }

    /* Footer — horizontal */
    .footer {
        grid-column: span 2;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    /* ── STUDIO DIRECTION — tablet spans ── */
    .hero-full,
    .work-header,
    .case-tile,
    .thesis-block,
    .services-header,
    .service-row,
    .cs-hero,
    .cs-intro,
    .cs-section,
    .cs-back { grid-column: span 2; }

    .case-image { aspect-ratio: 16 / 9; }

    /* Service row — main left, link right */
    .service-row {
        flex-direction: row;
        justify-content: space-between;
        align-items: baseline;
        gap: var(--space-lg);
    }
    .service-main { flex: 1; }
    .service-link { align-self: center; }

    /* Case study: two-up placeholder grid */
    .cs-block-grid { grid-template-columns: 1fr 1fr; }
}

/* ══════════════════════════════════════════════
   DESKTOP: 1200px+  (4 columns)
   ══════════════════════════════════════════════ */
@media (min-width: 1200px) {
    .grid { grid-template-columns: repeat(4, 1fr); }

    /* Nav */
    .nav { grid-column: span 4; }

    /* Hero — 3+1 */
    .hero-main { grid-column: span 3; }
    .hero-accent {
        grid-column: span 1;
        flex-direction: column;
        gap: var(--space-xs);
        min-height: clamp(200px, 20vw + 80px, 480px);
    }

    /* Compare — 2+2 */
    .compare-them { grid-column: span 2; }
    .compare-us { grid-column: span 2; }

    /* Section headers */
    .section-header { grid-column: span 4; }
    #features, #skills, .skills-header, #how, .how-header,
    #telegram-setup, .tg-header, .faq-section, .faq-header, .faq-item { grid-column: span 4; }

    /* Features — 4-col with right borders */
    .feature-card { border-right: 1px solid rgba(0,0,0,0.08); }
    .feature-card:nth-child(4n) { border-right: none; }

    /* Skills — reset to auto (3 cards + 1 stat block = 4 cols) */
    .skill-card { border-right: 1px solid rgba(0,0,0,0.08); }
    .skill-card:last-child { border-right: none; }
    .stat-block { grid-column: span 1; }

    /* Steps — all get right borders */
    .step-block { border-right: 1px solid rgba(0,0,0,0.08); }
    .step-block:nth-child(4n) { border-right: none; }

    /* Terminal — 3+1 */
    .terminal-section { grid-column: span 3; }
    .terminal-status { grid-column: span 1; flex-direction: column; }

    /* Telegram */
    .tg-step { border-right: 1px solid rgba(0,0,0,0.08); }

    /* Pricing — 4-col sub-grid */
    .pricing-section {
        grid-column: span 4;
        grid-template-columns: repeat(4, 1fr);
    }
    .pricing-left { grid-column: span 2; }
    .pricing-right { grid-column: span 2; }

    /* Custom CTA — 4-col sub-grid */
    .custom-cta-section {
        grid-column: span 4;
        grid-template-columns: repeat(4, 1fr);
    }
    .custom-cta-main { grid-column: span 3; }
    .custom-cta-accent { grid-column: span 1; }

    /* CTA — 4-col sub-grid */
    .cta-section {
        grid-column: span 4;
        grid-template-columns: repeat(4, 1fr);
    }
    .cta-main { grid-column: span 3; }
    .cta-accent { grid-column: span 1; }

    /* Footer */
    .footer { grid-column: span 4; }

    /* ── STUDIO DIRECTION — desktop spans ── */
    .hero-full,
    .work-header,
    .case-tile,
    .thesis-block,
    .services-header,
    .service-row,
    .cs-hero,
    .cs-intro,
    .cs-section,
    .cs-back { grid-column: span 4; }

    .hero-full { padding: var(--space-2xl) var(--pad-x-lg); min-height: clamp(420px, 35vw + 120px, 640px); }
    .case-meta { padding: var(--space-lg) var(--pad-x-lg); flex-direction: row; justify-content: space-between; align-items: baseline; }
    .thesis-block { padding: var(--space-2xl) var(--pad-x-lg); }
    .cs-section { padding: var(--space-2xl) var(--pad-x-lg); }
    .cs-intro { padding: var(--space-2xl) var(--pad-x-lg); }
}