/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
   CheckNeck — Da Vinci's Codex Design System
   Golden Ratio spacing · Ink color tokens · Glass depth
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */

/* ── Ink Color Tokens ── */
:root {
    --gold:       rgb(213, 175, 97);
    --gold-hi:    rgb(236, 204, 139);
    --gold-lo:    rgb(153, 122, 60);
    --gold-dim:   rgb(112, 93, 56);
    --champagne:  rgb(196, 164, 106);
    --champagne-hi: rgb(223, 192, 144);
    --steel:      rgb(144, 144, 174);
    --sage:       rgb(77, 209, 122);
    --amber:      rgb(219, 148, 71);
    --coral:      rgb(235, 64, 77);
    --cyan:       rgb(0, 230, 255);
    --royal:      rgb(171, 0, 255);
    --sepia:      rgb(196, 150, 105);
    --obsidian:   rgb(5, 5, 14);
    --parchment:  rgb(246, 242, 234);

    /* Text */
    --text1: rgba(238, 236, 230, 0.92);
    --text2: rgba(144, 144, 174, 0.80);
    --text3: rgba(144, 144, 174, 0.50);

    /* Backgrounds */
    --bg:      #05050E;
    --bg-grad1: rgb(8, 7, 14);
    --bg-grad2: rgb(6, 6, 11);
    --bg-grad3: rgb(4, 4, 8);

    /* Glass */
    --glass-subtle:   rgba(255,255,255, 0.020);
    --glass-standard: rgba(255,255,255, 0.035);
    --glass-elevated: rgba(255,255,255, 0.055);
    --glass-border-subtle:   rgba(255,255,255, 0.04);
    --glass-border-standard: rgba(255,255,255, 0.07);
    --glass-border-elevated: rgba(255,255,255, 0.11);

    /* Phi Spacing */
    --phi:    1.618;
    --sp-xs:  4px;
    --sp-sm:  6px;
    --sp-md:  10px;
    --sp-lg:  16px;
    --sp-xl:  26px;
    --sp-xxl: 42px;
    --sp-hero: 68px;

    /* Phi Radii */
    --r-sm:   14px;
    --r-md:   22px;
    --r-lg:   28px;
    --r-xl:   36px;
    --r-hero: 44px;

    /* Springs (CSS approximations) */
    --spring-smooth:  cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --spring-snappy:  cubic-bezier(0.22, 0.68, 0.36, 1.0);
    --spring-gentle:  cubic-bezier(0.4, 0.0, 0.2, 1.0);
    --spring-bouncy:  cubic-bezier(0.34, 1.56, 0.64, 1.0);
    --spring-elegant: cubic-bezier(0.33, 0.0, 0.2, 1.0);
    --ink-draw:       cubic-bezier(0.25, 0.1, 0.25, 1.0);

    /* Layout */
    --max-w: 1200px;
    --nav-h: 64px;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text1);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ── Typography ── */
.serif { font-family: 'Playfair Display', Georgia, serif; }
.mono  { font-family: 'JetBrains Mono', 'SF Mono', monospace; }
.gold-text { color: var(--gold); font-style: normal; }

h1, h2, h3 { font-weight: 700; line-height: 1.15; }
p { color: var(--text2); }

/* ── Utility ── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-sm);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--gold);
    border: 1px solid rgba(213,175,97, 0.25);
    padding: var(--sp-sm) var(--sp-lg);
    border-radius: 100px;
    text-transform: uppercase;
}
.badge-dot {
    width: 6px; height: 6px;
    background: var(--gold);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-md);
    padding: 14px 28px;
    border-radius: var(--r-md);
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s var(--spring-smooth);
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: linear-gradient(135deg, var(--gold), var(--champagne));
    color: #0a0a0e;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(213,175,97, 0.3);
}
.btn-ghost {
    background: transparent;
    color: var(--gold);
    border: 1px solid rgba(213,175,97, 0.3);
}
.btn-ghost:hover {
    background: rgba(213,175,97, 0.08);
    border-color: rgba(213,175,97, 0.5);
}
.btn-lg { padding: 18px 36px; font-size: 17px; border-radius: var(--r-lg); }
.btn-full { width: 100%; justify-content: center; }
.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

/* ── Glass Cards ── */
.glass-subtle {
    background: var(--glass-subtle);
    border: 1px solid var(--glass-border-subtle);
    border-radius: var(--r-lg);
}
.glass-standard {
    background: var(--glass-standard);
    border: 1px solid var(--glass-border-standard);
    border-radius: var(--r-lg);
    box-shadow: 0 7px 14px rgba(0,0,0, 0.15), 0 2px 4px rgba(0,0,0, 0.06);
}
.glass-elevated {
    background: var(--glass-elevated);
    border: 1px solid var(--glass-border-elevated);
    border-radius: var(--r-xl);
    box-shadow: 0 10px 28px rgba(0,0,0, 0.18), 0 5px 12px rgba(0,0,0, 0.12),
                0 -4px 44px rgba(213,175,97, 0.04);
}

/* ── Navigation ── */
#nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 0 var(--sp-xl);
    height: var(--nav-h);
    display: flex;
    align-items: center;
    transition: all 0.4s var(--spring-gentle);
}
#nav.scrolled {
    background: rgba(5,5,14, 0.85);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid rgba(255,255,255, 0.04);
}
.nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
    text-decoration: none;
    color: var(--text1);
}
.nav-logo-svg { flex-shrink: 0; }
.nav-wordmark {
    font-size: 18px;
    font-weight: 300;
    letter-spacing: -0.5px;
}
.nav-wordmark strong {
    font-weight: 700;
    color: var(--champagne);
}
.nav-links {
    display: flex;
    gap: var(--sp-xxl);
}
.nav-links a {
    color: var(--text2);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--text1); }
.nav-cta {
    font-size: 13px;
    font-weight: 600;
    color: var(--bg);
    background: linear-gradient(135deg, var(--gold), var(--champagne));
    padding: 8px 20px;
    border-radius: var(--r-sm);
    text-decoration: none;
    transition: all 0.3s var(--spring-smooth);
}
.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(213,175,97, 0.3);
}
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text1);
    transition: all 0.3s;
    border-radius: 2px;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── Hero ── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(var(--nav-h) + var(--sp-hero)) var(--sp-xl) var(--sp-xxl);
    max-width: var(--max-w);
    margin: 0 auto;
    overflow: hidden;
}
.hero-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: linear-gradient(170deg, var(--bg-grad1), var(--bg-grad2), var(--bg-grad3));
}
.hero-nebula {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
}
.hero-nebula--1 {
    width: 750px; height: 750px;
    top: -200px; left: -80px;
    background: radial-gradient(circle, rgba(213,175,97,0.05) 0%, transparent 70%);
}
.hero-nebula--2 {
    width: 550px; height: 550px;
    bottom: -100px; right: -50px;
    background: radial-gradient(circle, rgba(30,20,60,0.08) 0%, transparent 70%);
}
.hero-nebula--3 {
    width: 400px; height: 400px;
    top: 40%; left: 50%;
    background: radial-gradient(circle, rgba(213,175,97,0.03) 0%, transparent 70%);
}
.golden-dust {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
}
.dust-particle {
    position: absolute;
    width: 2px; height: 2px;
    background: var(--gold);
    border-radius: 50%;
    animation: dust-float var(--dur) ease-in-out infinite;
    animation-delay: var(--delay);
    opacity: 0;
}
@keyframes dust-float {
    0%, 100% { opacity: 0; transform: translateY(0) scale(0.5); }
    50% { opacity: var(--max-op); transform: translateY(-30px) scale(1); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-hero);
    align-items: center;
}
.hero-text { max-width: 560px; }
.hero-title {
    font-size: clamp(36px, 5vw, 56px);
    margin: var(--sp-xl) 0 var(--sp-lg);
    line-height: 1.08;
}
.hero-desc {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: var(--sp-xxl);
}
.hero-actions {
    display: flex;
    gap: var(--sp-lg);
    flex-wrap: wrap;
}
.hero-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-xl);
}
.hero-icon-wrap {
    position: relative;
    width: 280px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-rings-bg {
    position: absolute;
    inset: -20px;
    opacity: 0.2;
    animation: rings-breathe 6s ease-in-out infinite;
}
@keyframes rings-breathe {
    0%, 100% { transform: scale(1); opacity: 0.15; }
    50% { transform: scale(1.03); opacity: 0.25; }
}
.hero-app-icon {
    position: relative;
    width: 220px;
    height: 220px;
    border-radius: calc(220px * 0.224);
    overflow: hidden;
    background: radial-gradient(ellipse at 34% 22%, #1a141e, #0a0a0e 60%, #04040f);
    box-shadow: 0 15px 50px rgba(0,0,0,0.5), 0 0 60px rgba(213,175,97, 0.07);
    border: 1px solid rgba(255,255,255, 0.08);
    animation: icon-float 6.5s ease-in-out infinite;
}
.hero-app-icon svg { width: 100%; height: 100%; }
@keyframes icon-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}
.hero-logotype {
    text-align: center;
    letter-spacing: -1.2px;
    font-size: 28px;
}
.logotype-check { font-weight: 300; color: var(--text1); }
.logotype-neck { font-weight: 700; color: var(--champagne); }
.logotype-sub {
    font-size: 9px;
    letter-spacing: 3.5px;
    color: var(--steel);
    margin-top: var(--sp-xs);
}

.hero-stats {
    display: flex;
    gap: var(--sp-xxl);
    margin-top: var(--sp-hero);
}
.hero-stat {
    display: flex;
    flex-direction: column;
    gap: var(--sp-xs);
    padding-right: var(--sp-xxl);
    border-right: 1px solid rgba(255,255,255, 0.06);
}
.hero-stat:last-child { border-right: none; padding-right: 0; }
.hero-stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--gold);
}
.hero-stat-label {
    font-size: 13px;
    color: var(--text3);
}

/* ── Section Commons ── */
section {
    padding: var(--sp-hero) var(--sp-xl);
    max-width: var(--max-w);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.section-header {
    text-align: center;
    margin-bottom: var(--sp-hero);
}
.section-title {
    font-size: clamp(28px, 4vw, 44px);
    margin: var(--sp-lg) 0 var(--sp-md);
}
.section-sub {
    font-size: 16px;
    max-width: 560px;
    margin: 0 auto;
    color: var(--text2);
}

/* ── Live Monitor ── */
.monitor { padding-top: 120px; padding-bottom: 120px; }
.monitor-panel {
    padding: var(--sp-xxl);
    margin-top: var(--sp-xxl);
}
.monitor-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--sp-xxl);
    align-items: center;
    margin-bottom: var(--sp-xxl);
}
.monitor-score-area {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.monitor-score-text {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.monitor-score {
    font-size: 56px;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
}
.monitor-status {
    font-size: 12px;
    color: var(--steel);
    margin-top: var(--sp-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.monitor-axes {
    display: flex;
    flex-direction: column;
    gap: var(--sp-lg);
}
.axis-card {
    display: flex;
    align-items: center;
    gap: var(--sp-lg);
    padding: var(--sp-md) var(--sp-lg);
}
.axis-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.axis-label {
    font-size: 10px;
    color: var(--text3);
    letter-spacing: 2px;
}
.axis-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--text1);
}
.monitor-rings {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-lg);
}
.ring-labels {
    display: flex;
    gap: var(--sp-lg);
}
.ring-label {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
    font-size: 12px;
    color: var(--text2);
}
.ring-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
}
.ring-dot--gold { background: var(--gold); }
.ring-dot--sage { background: var(--sage); }
.ring-dot--amber { background: var(--amber); }

.monitor-controls {
    display: flex;
    align-items: center;
    gap: var(--sp-lg);
    padding-top: var(--sp-xl);
    border-top: 1px solid rgba(255,255,255, 0.04);
}
.monitor-hint {
    font-size: 11px;
    color: var(--text3);
    margin-left: auto;
}

/* ── Identity ── */
.identity-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-xl);
}
.identity-card {
    padding: var(--sp-xxl) var(--sp-xl);
    text-align: center;
    transition: transform 0.4s var(--spring-smooth), box-shadow 0.4s;
}
.identity-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0, 0.2);
}
.identity-visual {
    display: flex;
    justify-content: center;
    margin-bottom: var(--sp-xl);
}
.identity-title {
    font-size: 18px;
    margin-bottom: var(--sp-md);
}
.identity-desc {
    font-size: 14px;
    color: var(--text2);
    line-height: 1.6;
}

/* ── Features Bento ── */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-lg);
}
.bento-wide { grid-column: span 2; }
.bento-card {
    padding: var(--sp-xxl) var(--sp-xl);
    transition: transform 0.4s var(--spring-smooth), box-shadow 0.4s;
    display: flex;
    flex-direction: column;
}
.bento-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 32px rgba(0,0,0, 0.2);
}
.bento-icon { margin-bottom: var(--sp-xl); }
.bento-title {
    font-size: 18px;
    margin-bottom: var(--sp-md);
}
.bento-desc {
    font-size: 14px;
    color: var(--text2);
    line-height: 1.6;
    flex: 1;
}
.bento-tag {
    display: inline-block;
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--gold-dim);
    margin-top: var(--sp-lg);
    padding: var(--sp-xs) var(--sp-md);
    border: 1px solid rgba(213,175,97, 0.15);
    border-radius: var(--r-sm);
}

/* ── Steps ── */
.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--sp-xl);
}
.step {
    flex: 1;
    max-width: 300px;
    text-align: center;
}
.step-num {
    font-size: 36px;
    font-weight: 700;
    color: var(--gold);
    opacity: 0.4;
    margin-bottom: var(--sp-lg);
}
.step-visual {
    display: flex;
    justify-content: center;
    margin-bottom: var(--sp-xl);
}
.step-title {
    font-size: 18px;
    margin-bottom: var(--sp-md);
}
.step-desc {
    font-size: 14px;
    color: var(--text2);
    line-height: 1.6;
}
.step-line {
    width: 1px;
    height: 120px;
    background: linear-gradient(to bottom, transparent, rgba(213,175,97,0.3), transparent);
    margin-top: 80px;
    flex-shrink: 0;
}

/* ── Technology ── */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-xl);
}
.tech-card {
    padding: var(--sp-xxl);
    text-align: center;
    transition: transform 0.4s var(--spring-smooth);
}
.tech-card:hover { transform: translateY(-4px); }
.tech-svg { margin-bottom: var(--sp-xl); }
.tech-title {
    font-size: 22px;
    margin-bottom: var(--sp-md);
}
.tech-desc {
    font-size: 14px;
    color: var(--text2);
    line-height: 1.6;
    margin-bottom: var(--sp-lg);
}
.tech-formula {
    font-size: 11px;
    color: var(--gold-dim);
    padding: var(--sp-sm) var(--sp-md);
    border: 1px solid rgba(213,175,97, 0.12);
    border-radius: var(--r-sm);
    display: inline-block;
}

/* ── Exercises ── */
.exercise-grid {
    display: flex;
    flex-direction: column;
    gap: var(--sp-xl);
}
.exercise-card {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--sp-xxl);
    padding: var(--sp-xxl);
    align-items: center;
    transition: transform 0.4s var(--spring-smooth);
}
.exercise-card:hover { transform: translateY(-3px); }
.exercise-card:nth-child(even) { direction: rtl; }
.exercise-card:nth-child(even) > * { direction: ltr; }
.exercise-visual { display: flex; justify-content: center; }
.exercise-title {
    font-size: 22px;
    margin-bottom: var(--sp-md);
}
.exercise-desc {
    font-size: 14px;
    color: var(--text2);
    line-height: 1.6;
    margin-bottom: var(--sp-lg);
}
.exercise-stats {
    display: flex;
    gap: var(--sp-lg);
}
.exercise-stat {
    font-size: 10px;
    letter-spacing: 1.5px;
    color: var(--steel);
    padding: var(--sp-xs) var(--sp-md);
    border: 1px solid rgba(144,144,174, 0.15);
    border-radius: var(--r-sm);
}

/* ── Pricing ── */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-xl);
    align-items: start;
}
.pricing-card {
    padding: var(--sp-xxl);
    text-align: center;
    transition: transform 0.4s var(--spring-smooth);
    position: relative;
}
.pricing-card:hover { transform: translateY(-4px); }
.pricing-featured {
    border-color: rgba(213,175,97, 0.25);
    transform: scale(1.02);
}
.pricing-featured:hover { transform: scale(1.02) translateY(-4px); }
.pricing-popular {
    position: absolute;
    top: -12px; left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--gold), var(--champagne));
    color: var(--bg);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 2px;
    padding: 4px 16px;
    border-radius: 100px;
}
.pricing-tier {
    font-size: 12px;
    letter-spacing: 3px;
    color: var(--steel);
    margin-bottom: var(--sp-lg);
}
.pricing-amount {
    font-size: 44px;
    font-weight: 700;
    color: var(--text1);
}
.pricing-period {
    font-size: 14px;
    color: var(--text3);
}
.pricing-save {
    font-size: 11px;
    color: var(--sage);
    margin: var(--sp-sm) 0 var(--sp-lg);
}
.pricing-features {
    list-style: none;
    text-align: left;
    margin: var(--sp-xl) 0;
}
.pricing-features li {
    font-size: 14px;
    color: var(--text2);
    padding: var(--sp-sm) 0;
    border-bottom: 1px solid rgba(255,255,255, 0.03);
}
.pricing-features li::before {
    content: '+ ';
    color: var(--gold-dim);
    font-weight: 600;
}

/* ── Quote ── */
.quote-section {
    text-align: center;
    padding: 120px var(--sp-xl);
}
.quote-ornament {
    display: flex;
    justify-content: center;
    margin: var(--sp-xl) 0;
    opacity: 0.3;
}
.quote {
    font-size: clamp(22px, 3vw, 32px);
    font-style: italic;
    color: var(--text1);
    opacity: 0.85;
}
.quote-cite {
    display: block;
    font-style: normal;
    font-size: 14px;
    color: var(--steel);
    margin-top: var(--sp-lg);
}

/* ── Download CTA ── */
.download {
    text-align: center;
    padding: 120px var(--sp-xl);
}
.download-visual {
    margin-bottom: var(--sp-xxl);
    display: flex;
    justify-content: center;
    opacity: 0.7;
}
.download-req {
    font-size: 12px;
    color: var(--text3);
    margin-top: var(--sp-xl);
}
.trust-badges {
    display: flex;
    justify-content: center;
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
}
.trust-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-sm);
    font-size: 13px;
    color: var(--text2);
    padding: var(--sp-sm) var(--sp-lg);
}

/* ── Footer ── */
.footer {
    border-top: 1px solid rgba(255,255,255, 0.04);
    padding: var(--sp-hero) var(--sp-xl);
    max-width: var(--max-w);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.footer-inner {
    text-align: center;
}
.footer-tagline {
    font-size: 13px;
    color: var(--text3);
    margin-top: var(--sp-sm);
}
.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--sp-xxl);
    margin: var(--sp-xxl) 0;
}
.footer-links a {
    color: var(--text2);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--text1); }
.footer-copy {
    font-size: 12px;
    color: var(--text3);
}

/* ── App Preview / Phone Mockups ── */
.app-preview {
    padding-top: 120px;
    padding-bottom: 120px;
    overflow: visible;
}
.preview-carousel {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: var(--sp-xxl);
    perspective: 1200px;
}
.phone-mockup {
    flex: 0 0 auto;
    text-align: center;
    transition: transform 0.6s var(--spring-smooth);
}
.phone-mockup:hover {
    transform: translateY(-8px);
}
.phone-mockup--hero {
    transform: translateY(-16px) scale(1.05);
    z-index: 2;
}
.phone-mockup--hero:hover {
    transform: translateY(-24px) scale(1.05);
}
.phone-frame {
    position: relative;
    width: 240px;
    background: linear-gradient(145deg, #1a1a24, #0e0e16);
    border-radius: 32px;
    padding: 8px;
    box-shadow:
        0 20px 60px rgba(0,0,0, 0.5),
        0 0 0 1px rgba(255,255,255, 0.08),
        0 0 80px rgba(213,175,97, 0.04),
        inset 0 1px 0 rgba(255,255,255, 0.06);
    overflow: hidden;
}
.phone-mockup--hero .phone-frame {
    width: 270px;
    box-shadow:
        0 30px 80px rgba(0,0,0, 0.6),
        0 0 0 1px rgba(213,175,97, 0.15),
        0 0 120px rgba(213,175,97, 0.06),
        inset 0 1px 0 rgba(255,255,255, 0.08);
}
.phone-notch {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 90px;
    height: 22px;
    background: #0a0a12;
    border-radius: 0 0 14px 14px;
    z-index: 3;
}
.phone-screen {
    width: 100%;
    display: block;
    border-radius: 24px;
    aspect-ratio: 9 / 19.5;
    object-fit: cover;
    object-position: top;
}
.phone-caption {
    margin-top: var(--sp-xl);
    max-width: 240px;
}
.phone-caption h3 {
    font-size: 16px;
    margin-bottom: var(--sp-sm);
    color: var(--text1);
}
.phone-caption p {
    font-size: 13px;
    color: var(--text2);
    line-height: 1.5;
}

/* ── Animations ── */
[data-anim] {
    opacity: 0;
    transition: opacity 0.8s var(--spring-gentle), transform 0.8s var(--spring-gentle);
}
[data-anim="fade-up"] { transform: translateY(30px); }
[data-anim="fade-in"] { transform: none; }
[data-anim="scale-in"] { transform: scale(0.95); }

[data-anim].visible {
    opacity: 1;
    transform: none;
}

/* Force hero elements visible immediately on load */
.hero [data-anim] {
    animation: hero-reveal 1s var(--spring-gentle) forwards;
}
.hero [data-anim][data-delay="200"] { animation-delay: 0.2s; }
.hero [data-anim][data-delay="400"] { animation-delay: 0.4s; }
@keyframes hero-reveal {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: none; }
}

/* SVG ink-draw animation */
.ink-draw {
    stroke-dasharray: var(--path-len, 1000);
    stroke-dashoffset: var(--path-len, 1000);
    animation: ink-draw-in 2.5s var(--ink-draw) forwards;
}
@keyframes ink-draw-in {
    to { stroke-dashoffset: 0; }
}

/* Spine breathing */
@keyframes spine-breathe {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(1.018); }
}

/* Ring glow pulse */
@keyframes ring-glow {
    0%, 100% { filter: drop-shadow(0 0 3px currentColor); opacity: 0.8; }
    50% { filter: drop-shadow(0 0 8px currentColor); opacity: 1; }
}

/* Bezel rotate */
.bezel-rotate {
    animation: bezel-rotate 60s linear infinite;
    transform-origin: center;
}
@keyframes bezel-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Spiral pulse */
@keyframes spiral-pulse {
    0%, 100% { opacity: 0.35; }
    50% { opacity: 0.55; }
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-text { max-width: 100%; }
    .hero-actions { justify-content: center; }
    .hero-visual { order: -1; }
    .hero-stats { justify-content: center; flex-wrap: wrap; }
    .monitor-grid { grid-template-columns: 1fr; }
    .monitor-score-area { order: 0; }
    .monitor-axes { flex-direction: row; order: 2; }
    .monitor-rings { order: 1; }
    .preview-carousel { gap: var(--sp-xl); }
    .phone-frame { width: 200px; }
    .phone-mockup--hero .phone-frame { width: 220px; }
    .identity-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .bento-grid { grid-template-columns: 1fr; }
    .bento-wide { grid-column: span 1; }
    .tech-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .exercise-card { grid-template-columns: 1fr; text-align: center; }
    .exercise-card:nth-child(even) { direction: ltr; }
    .exercise-stats { justify-content: center; }
    .steps { flex-direction: column; align-items: center; }
    .step-line { width: 80px; height: 1px; background: linear-gradient(to right, transparent, rgba(213,175,97,0.3), transparent); margin-top: 0; }
}

@media (max-width: 768px) {
    :root { --sp-xl: 20px; --sp-xxl: 32px; --sp-hero: 48px; }
    .nav-links, .nav-cta { display: none; }
    .hamburger { display: flex; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: var(--nav-h);
        left: 0; right: 0;
        background: rgba(5,5,14, 0.95);
        backdrop-filter: blur(20px);
        padding: var(--sp-xl);
        gap: var(--sp-lg);
    }
    .preview-carousel { flex-direction: column; align-items: center; }
    .phone-mockup--hero { transform: none; }
    .phone-mockup--hero:hover { transform: translateY(-8px); }
    .phone-frame { width: 220px; }
    .phone-mockup--hero .phone-frame { width: 240px; }
    .hero-icon-wrap { width: 200px; height: 200px; }
    .hero-app-icon { width: 160px; height: 160px; border-radius: calc(160px * 0.224); }
    .hero-rings-bg { inset: -10px; }
    .hero-stat-value { font-size: 24px; }
    .monitor-axes { flex-direction: column; }
    .monitor-controls { flex-wrap: wrap; }
    .monitor-hint { width: 100%; text-align: center; }
}

@media (max-width: 480px) {
    .hero-stats { flex-direction: column; gap: var(--sp-lg); }
    .hero-stat { border-right: none; border-bottom: 1px solid rgba(255,255,255, 0.06); padding: 0 0 var(--sp-lg) 0; }
    .trust-badges { flex-direction: column; align-items: center; }
    .footer-links { flex-direction: column; gap: var(--sp-lg); }
}