/* ============================================================
   Blanky Link — Landing Page Stylesheet
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;1,9..144,300;1,9..144,400;1,9..144,500&display=swap');

/* ============================================================
   CSS Custom Properties
   ============================================================ */

:root {
    /* Colors */
    --color-bg:         #F4F3EF;
    --color-surface:    #FFFFFF;
    --color-fg:         #1C1B18;
    --color-muted:      #8F8C84;
    --color-muted-soft: #B8B4A8;
    --color-border:     rgba(26, 25, 22, 0.08);
    --color-border-md:  rgba(26, 25, 22, 0.12);
    --color-gold:       #EAC950;
    --color-gold-soft:  #F2E8A6;
    --color-gold-hi:    #F8E287;
    --color-sage:       #D2E4DA;
    --color-sage-ink:   #2E5A44;
    --color-navy:       #151F2B;
    --color-navy-deep:  #0B1118;
    --color-peach:      #F2D5BC;
    --color-stone:      #E4E2DC;
    --color-ink-soft:   #595650;

    /* Typography */
    --font-serif: 'Fraunces', 'Shippori Mincho', Georgia, serif;
    --font-sans:  system-ui, -apple-system, BlinkMacSystemFont, 'Noto Sans JP', sans-serif;

    /* Spacing */
    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2rem;
    --space-2xl: 3rem;
    --space-3xl: 4.5rem;
    --space-4xl: 7rem;

    /* Layout */
    --content-width: 1100px;
    --bento-gap:     0.625rem;

    /* Animation */
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg:         #1A1916;
        --color-surface:    #24231E;
        --color-fg:         #F0EEE8;
        --color-muted:      #918E84;
        --color-muted-soft: #63615A;
        --color-border:     rgba(240, 238, 232, 0.08);
        --color-border-md:  rgba(240, 238, 232, 0.12);
        --color-gold:       #D4B94C;
        --color-gold-soft:  #3D3921;
        --color-gold-hi:    #EADB83;
        --color-sage:       #2C3C34;
        --color-sage-ink:   #A4D1B9;
        --color-navy:       #1A2635;
        --color-navy-deep:  #0D141C;
        --color-peach:      #4A3A2F;
        --color-stone:      #2A2925;
        --color-ink-soft:   #C2BFB6;
    }
}

/* ============================================================
   Reset
   ============================================================ */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    background-color: var(--color-bg);
    color: var(--color-fg);
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

img,
picture,
video {
    display: block;
    max-width: 100%;
}

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

ul {
    list-style: none;
}

/* ============================================================
   Accessibility
   ============================================================ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 3px solid var(--color-gold);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Skip navigation */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    padding: 0.5rem 1rem;
    background: var(--color-fg);
    color: var(--color-bg);
    border-radius: 0 0 6px 6px;
    font-size: 0.875rem;
    font-weight: 500;
    z-index: 1000;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
    outline: none;
}

/* ============================================================
   Layout
   ============================================================ */

.container {
    width: 100%;
    max-width: var(--content-width);
    margin-inline: auto;
    padding-inline: var(--space-xl);
}

/* ============================================================
   Grain Texture Overlay
   ============================================================ */

.grain {
    position: relative;
    isolation: isolate;
}

.grain::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.45 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
    opacity: 0.06;
    pointer-events: none;
    mix-blend-mode: multiply;
    border-radius: inherit;
    z-index: 0;
}

@media (prefers-color-scheme: dark) {
    .grain::before {
        mix-blend-mode: screen;
        opacity: 0.04;
    }
}

.grain > * {
    position: relative;
    z-index: 1;
}

/* ============================================================
   Animation Keyframes
   ============================================================ */

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bento-pop {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes pulse-dot {
    0%, 100% { box-shadow: 0 0 0 3px rgba(108, 224, 138, 0.2); }
    50%       { box-shadow: 0 0 0 7px rgba(108, 224, 138, 0.05); }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================
   Editorial Label
   ============================================================ */

.label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.6875rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-muted);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

.label::before {
    content: "";
    display: block;
    width: 14px;
    height: 1px;
    background: currentColor;
    opacity: 0.55;
    flex-shrink: 0;
}

/* ============================================================
   Site Header
   ============================================================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-bg);
    border-bottom: 0.5px solid var(--color-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 1rem;
}

.site-logo {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-fg);
}

.site-logo em {
    font-style: italic;
    color: var(--color-muted);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.header-nav a {
    font-size: 0.8125rem;
    color: var(--color-muted);
    transition: color 0.2s ease;
}

.header-nav a:hover,
.header-nav a:focus-visible {
    color: var(--color-fg);
}

.btn-header {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1.1rem;
    background: var(--color-fg);
    color: var(--color-bg);
    border-radius: 8px;
    font-size: 0.8125rem;
    font-weight: 500;
    transition: opacity 0.2s ease;
}

.btn-header:hover,
.btn-header:focus-visible {
    opacity: 0.85;
    color: var(--color-bg);
}

/* ============================================================
   Hero Section
   ============================================================ */

.hero {
    padding-block: var(--space-4xl) var(--space-3xl);
    text-align: center;
    overflow: hidden;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.875rem;
    background: var(--color-gold-soft);
    border: 0.5px solid rgba(234, 201, 80, 0.4);
    border-radius: 20px;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-fg);
    font-weight: 500;
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fade-up 0.7s var(--ease-out) forwards 0.1s;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.75rem, 7vw, 5.5rem);
    font-weight: 500;
    line-height: 1.05;
    letter-spacing: -0.025em;
    color: var(--color-fg);
    max-width: 860px;
    margin-inline: auto;
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fade-up 0.7s var(--ease-out) forwards 0.2s;
}

.hero-title em {
    font-style: italic;
    color: var(--color-gold);
}

.hero-desc {
    font-size: clamp(0.9375rem, 2vw, 1.0625rem);
    color: var(--color-ink-soft);
    max-width: 520px;
    margin-inline: auto;
    margin-bottom: var(--space-xl);
    line-height: 1.8;
    opacity: 0;
    animation: fade-up 0.7s var(--ease-out) forwards 0.35s;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    opacity: 0;
    animation: fade-up 0.7s var(--ease-out) forwards 0.5s;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: var(--color-fg);
    color: var(--color-bg);
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-primary:hover,
.btn-primary:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    color: var(--color-bg);
}

.btn-primary .arrow {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1rem;
    transition: transform 0.3s var(--ease-bounce);
}

.btn-primary:hover .arrow {
    transform: translateX(4px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border: 0.5px solid var(--color-border-md);
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-fg);
    background: transparent;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background: var(--color-surface);
    border-color: var(--color-border-md);
    color: var(--color-fg);
}

/* ============================================================
   Hero Preview (Screenshot)
   ============================================================ */

.hero-preview {
    padding-block: 0 var(--space-3xl);
}

.preview-frame {
    max-width: 900px;
    margin-inline: auto;
    border-radius: 20px;
    overflow: hidden;
    border: 0.5px solid var(--color-border-md);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.06);
    opacity: 0;
    animation: fade-up 0.8s var(--ease-out) forwards 0.6s;
}

.preview-frame img {
    width: 100%;
    height: auto;
    display: block;
}

/* ============================================================
   Section Spacing & Common
   ============================================================ */

.section {
    padding-block: var(--space-4xl);
}

.section-header {
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.875rem, 4vw, 3rem);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--color-fg);
    margin-top: var(--space-sm);
}

.section-title em {
    font-style: italic;
    color: var(--color-gold);
}

.section-lead {
    font-size: 1rem;
    color: var(--color-ink-soft);
    max-width: 480px;
    margin-top: var(--space-md);
    line-height: 1.8;
}

/* ============================================================
   Bento Features Grid
   ============================================================ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--bento-gap);
}

.feature-card {
    border-radius: 18px;
    padding: 1.75rem;
    overflow: hidden;
    position: relative;
    opacity: 0;
    transform: translateY(20px) scale(0.96);
    animation: bento-pop 0.6s var(--ease-out) forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

.feature-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
    z-index: 1;
}

.feature-card-transition {
    transition: transform 0.3s var(--ease-bounce), box-shadow 0.3s ease;
}

/* Card color variants */
.card-white  { background: var(--color-surface); border: 0.5px solid var(--color-border); }
.card-gold   { background: var(--color-gold-soft); }
.card-sage   { background: var(--color-sage); }
.card-navy   { background: var(--color-navy); color: var(--color-bg); }
.card-peach  { background: var(--color-peach); }
.card-stone  { background: var(--color-stone); }

.card-span2 { grid-column: span 2; }

/* Feature icon */
.feature-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    background: var(--color-fg);
}

.feature-icon svg {
    width: 20px;
    height: 20px;
    fill: var(--color-bg);
    stroke: none;
}

.card-navy .feature-icon {
    background: rgba(255, 255, 255, 0.1);
}

.card-navy .feature-icon svg {
    fill: var(--color-gold);
}

.feature-title {
    font-family: var(--font-serif);
    font-size: 1.1875rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: var(--space-xs);
    color: inherit;
}

.card-navy .feature-title {
    color: var(--color-bg);
}

.feature-desc {
    font-size: 0.875rem;
    line-height: 1.75;
    color: var(--color-ink-soft);
}

.card-navy .feature-desc {
    color: rgba(240, 238, 232, 0.6);
}

.card-sage .feature-desc {
    color: var(--color-sage-ink);
}

/* Big stat in feature card */
.feature-big-num {
    font-family: var(--font-serif);
    font-size: 4.5rem;
    font-weight: 500;
    line-height: 0.9;
    letter-spacing: -0.025em;
    color: var(--color-fg);
    font-feature-settings: "lnum" 1;
    margin-top: auto;
}

.feature-num-unit {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-style: italic;
    color: var(--color-ink-soft);
}

.card-flex {
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

/* ============================================================
   Screenshots Section
   ============================================================ */

.screenshots-grid {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--space-md);
    align-items: start;
}

.screenshot-frame {
    border-radius: 16px;
    overflow: hidden;
    border: 0.5px solid var(--color-border-md);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.07);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.screenshot-frame:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

.screenshot-frame img {
    width: 100%;
    height: auto;
    display: block;
}

/* ============================================================
   Steps / How-to Section
   ============================================================ */

.steps-section {
    background: var(--color-navy);
    padding-block: var(--space-4xl);
    overflow: hidden;
    position: relative;
}

.steps-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.45 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
    opacity: 0.04;
    mix-blend-mode: screen;
    pointer-events: none;
    z-index: 0;
}

.steps-section .container {
    position: relative;
    z-index: 1;
}

.steps-section .section-title {
    color: var(--color-bg);
}

.steps-section .section-lead {
    color: rgba(240, 238, 232, 0.6);
}

.steps-section .label {
    color: var(--color-gold);
    opacity: 0.85;
}

.steps-section .label::before {
    background: var(--color-gold);
}

.steps-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.step {
    position: relative;
}

.step-num {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 500;
    font-style: italic;
    color: var(--color-gold);
    opacity: 0.35;
    line-height: 1;
    margin-bottom: var(--space-md);
    letter-spacing: -0.03em;
}

.step-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-bg);
    margin-bottom: var(--space-xs);
}

.step-desc {
    font-size: 0.875rem;
    line-height: 1.75;
    color: rgba(240, 238, 232, 0.55);
}

/* ============================================================
   Requirements Section
   ============================================================ */

.requirements-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.requirement-item {
    padding: 1.375rem;
    background: var(--color-surface);
    border: 0.5px solid var(--color-border);
    border-radius: 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.requirement-item:hover {
    border-color: var(--color-border-md);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.requirement-label {
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-muted);
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.requirement-value {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-fg);
}

/* ============================================================
   CTA Section
   ============================================================ */

.cta-section {
    padding-block: var(--space-4xl);
    text-align: center;
}

.cta-card {
    max-width: 680px;
    margin-inline: auto;
    padding: var(--space-3xl) var(--space-2xl);
    background: var(--color-fg);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
}

.cta-card .grain::before {
    opacity: 0.03;
    mix-blend-mode: screen;
}

.avail-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-gold);
    margin-bottom: var(--space-md);
    letter-spacing: 0.04em;
}

.avail-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #6CE08A;
    box-shadow: 0 0 0 3px rgba(108, 224, 138, 0.2);
    animation: pulse-dot 2.4s ease-in-out infinite;
}

.cta-title {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-bg);
    margin-bottom: var(--space-md);
}

.cta-title em {
    font-style: italic;
    color: var(--color-gold);
}

.cta-desc {
    font-size: 0.9375rem;
    color: rgba(240, 238, 232, 0.55);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
    max-width: 440px;
    margin-inline: auto;
    margin-bottom: var(--space-xl);
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--color-gold);
    color: var(--color-navy-deep);
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold-hi) 50%, var(--color-gold) 100%);
    background-size: 220% 100%;
    background-position: 100% 0;
    transition: background-position 0.6s ease;
    z-index: 0;
}

.btn-cta:hover::before,
.btn-cta:focus-visible::before {
    background-position: 0 0;
}

.btn-cta > * {
    position: relative;
    z-index: 1;
}

.btn-cta:hover,
.btn-cta:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    color: var(--color-navy-deep);
}

.btn-cta .arrow {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.1rem;
    transition: transform 0.3s var(--ease-bounce);
}

.btn-cta:hover .arrow {
    transform: translateX(4px);
}

.cta-sub {
    margin-top: var(--space-md);
    font-size: 0.8125rem;
    color: rgba(240, 238, 232, 0.35);
}

/* ============================================================
   Site Footer
   ============================================================ */

.site-footer {
    border-top: 0.5px solid var(--color-border);
    padding-block: var(--space-xl);
}

.site-footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--color-muted);
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-fg);
}

.footer-logo em {
    font-style: italic;
    color: var(--color-muted);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--color-muted);
    font-size: 0.8125rem;
    transition: color 0.2s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
    color: var(--color-fg);
}

/* ============================================================
   Language Switch
   ============================================================ */

.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
}

.lang-switch a,
.lang-switch span {
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: var(--color-muted);
    transition: color 0.2s ease;
}

.lang-switch a:hover,
.lang-switch a:focus-visible {
    color: var(--color-fg);
}

.lang-switch .lang-current {
    color: var(--color-fg);
    font-weight: 500;
}

.lang-sep {
    color: var(--color-border-md);
}

/* ============================================================
   Responsive — Tablet
   ============================================================ */

@media (max-width: 900px) {
    :root {
        --space-4xl: 5rem;
    }

    .container {
        padding-inline: var(--space-lg);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .card-span2 {
        grid-column: span 1;
    }

    .screenshots-grid {
        grid-template-columns: 1fr;
        max-width: 560px;
        margin-inline: auto;
    }

    .screenshots-grid .screenshot-frame:last-child {
        max-width: 280px;
        margin-inline: auto;
    }

    .steps-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .requirements-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================================
   Responsive — Mobile
   ============================================================ */

@media (max-width: 600px) {
    :root {
        --space-4xl: 4rem;
        --space-3xl: 3rem;
    }

    .container {
        padding-inline: var(--space-md);
    }

    .header-nav {
        gap: var(--space-md);
    }

    .header-nav .nav-link {
        display: none;
    }

    .hero {
        text-align: left;
    }

    .hero-desc {
        margin-inline: 0;
    }

    .hero-actions {
        justify-content: flex-start;
    }

    .hero-eyebrow {
        display: none;
    }

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

    .card-span2 {
        grid-column: span 1;
    }

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

    .requirements-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .site-footer-inner {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .cta-card {
        padding: var(--space-2xl) var(--space-lg);
    }

    .preview-frame {
        border-radius: 14px;
    }
}