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

:root {
    --blue-dark:    #001e5b;
    --blue-mid:     #022ac0;
    --blue-bright:  #066afe;
    --blue-sky:     #00b3ff;
    --blue-light:   #90d0fe;
    --blue-pale:    #eaf5fe;
    --teal:         #06a59a;
    --teal-dark:    #023434;
    --teal-mid:     #04c9bc;
    --teal-light:   #def9f3;
    --text-dark:    #0a0f1e;
    --text-body:    #1e2a45;
    --text-muted:   #4a5568;
    --white:        #ffffff;
    --surface:      #f4f8ff;
    --border:       #c8dcf8;
    --radius:       12px;
    --radius-sm:    8px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-body);
    background: var(--white);
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { color: var(--text-dark); line-height: 1.2; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: 12px; }
h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
p { color: var(--text-body); }
a { color: var(--blue-bright); text-decoration: none; }
a:hover { text-decoration: underline; }
section { padding: 80px 0; }
.section-sub { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 40px; max-width: 640px; }

/* ── Buttons ── */
.btn-primary {
    display: inline-block; background: var(--blue-bright); color: var(--white);
    padding: 12px 28px; border-radius: 6px; font-weight: 600; font-size: 0.95rem;
    transition: background 0.2s; text-decoration: none;
}
.btn-primary:hover { background: var(--blue-mid); text-decoration: none; color: var(--white); }

.btn-secondary {
    display: inline-block; border: 2px solid var(--blue-bright); color: var(--blue-bright);
    padding: 10px 26px; border-radius: 6px; font-weight: 600; font-size: 0.95rem;
    transition: all 0.2s; text-decoration: none;
}
.btn-secondary:hover { background: var(--blue-pale); text-decoration: none; }

/* ── Header ── */
header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.96); backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}
.nav-wrapper { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.logo { font-size: 1.2rem; font-weight: 700; color: var(--blue-dark); letter-spacing: 0.05em; text-decoration: none; }
nav { display: flex; gap: 24px; }
nav a { font-size: 0.88rem; font-weight: 500; color: var(--text-body); text-decoration: none; transition: color 0.15s; }
nav a:hover { color: var(--blue-bright); }

/* ── Hero ── */
#hero {
    background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-mid) 45%, var(--blue-bright) 80%, #1a8aff 100%);
    position: relative;
    padding: 90px 0 80px; color: var(--white);
    overflow: hidden;
}
#hero::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(0,179,255,0.18) 0%, transparent 60%),
                radial-gradient(ellipse at 10% 80%, rgba(6,165,154,0.12) 0%, transparent 50%);
    pointer-events: none;
}
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-eyebrow {
    font-size: 0.82rem; font-weight: 500; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--blue-sky); margin-bottom: 12px;
}
#hero h1 { font-size: clamp(2.2rem, 4vw, 3.2rem); font-weight: 700; color: var(--white); margin-bottom: 6px; }
.hero-tagline { font-size: 1.1rem; color: rgba(255,255,255,0.7); margin-bottom: 20px; font-style: italic; }
.hero-desc { font-size: 1rem; color: rgba(255,255,255,0.85); max-width: 480px; margin-bottom: 32px; line-height: 1.75; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-actions .btn-primary { background: var(--white); color: var(--blue-mid); }
.hero-actions .btn-primary:hover { background: var(--blue-light); }
.hero-actions .btn-secondary { border-color: rgba(255,255,255,0.6); color: var(--white); }
.hero-actions .btn-secondary:hover { background: rgba(255,255,255,0.1); }

.hero-stats { display: flex; flex-direction: column; gap: 16px; }
.stat-card {
    background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius); padding: 20px 24px; backdrop-filter: blur(4px);
}
.stat-num { font-size: 2.4rem; font-weight: 700; color: var(--white); line-height: 1; }
.stat-suffix { font-size: 1.5rem; font-weight: 700; color: var(--blue-sky); }
.stat-label { display: block; font-size: 0.82rem; color: rgba(255,255,255,0.7); margin-top: 4px; }

/* ── About ── */
#about { background: var(--surface); }
.about-inner { display: grid; grid-template-columns: 1fr auto; gap: 60px; align-items: start; }
.about-text h2 { margin-bottom: 16px; }
.about-mission {
    font-size: 1.15rem; font-style: italic; color: var(--blue-dark);
    border-left: 4px solid var(--teal); padding-left: 20px;
    margin-bottom: 24px; line-height: 1.7;
    background: linear-gradient(to right, rgba(6,165,154,0.06), transparent);
    padding-top: 10px; padding-bottom: 10px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.about-text p { margin-bottom: 14px; font-size: 1rem; line-height: 1.75; max-width: 580px; }
.about-location { margin-top: 20px; font-size: 0.9rem; color: var(--text-muted); }

.about-pills { display: flex; flex-direction: column; gap: 7px; padding-top: 52px; min-width: 200px; }
.pill {
    background: var(--blue-pale); color: var(--blue-mid); padding: 5px 12px;
    border-radius: 20px; font-size: 0.78rem; font-weight: 500;
    white-space: nowrap; border: 1px solid var(--border);
    display: inline-flex; align-items: center; gap: 6px;
}
.pill img { width: 18px; height: 18px; object-fit: contain; flex-shrink: 0; }
.pill.pill-sf { background: var(--blue-dark); color: var(--white); border-color: var(--blue-mid); }

/* ── Career Arc ── */
#arc { background: var(--white); }
#arc h2 { margin-bottom: 8px; }
#arc .section-sub { max-width: none !important; }
.arc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 40px; }
.arc-card {
    background: var(--white); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 32px;
    border-top: 3px solid var(--teal);
    box-shadow: 0 4px 20px rgba(6,165,154,0.08);
}
.arc-card-sf {
    border-color: var(--blue-bright); border-width: 1px;
    border-top: 3px solid var(--blue-bright);
    box-shadow: 0 4px 20px rgba(6,106,254,0.1);
}
.arc-badge {
    display: inline-block; background: var(--teal); color: var(--white);
    font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
    padding: 4px 10px; border-radius: 4px; margin-bottom: 14px;
}
.arc-badge-sf { background: var(--blue-bright); }
.arc-card h3 { font-size: 1.05rem; color: var(--blue-dark); margin-bottom: 12px; }
.arc-card > p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.65; margin-bottom: 16px; }

.arc-clients { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.client-tag {
    background: var(--white); border: 1px solid var(--border); color: var(--text-body);
    font-size: 0.75rem; font-weight: 500; padding: 3px 10px; border-radius: 4px;
}
.arc-industries {
    display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px;
}
.arc-industries span {
    font-size: 0.72rem; color: var(--teal-dark); background: var(--teal-light);
    padding: 2px 8px; border-radius: 3px; border: 1px solid rgba(6,165,154,0.2);
    display: inline-flex; align-items: center; gap: 5px;
}
.arc-industries span img { width: 16px; height: 16px; object-fit: contain; }
.arc-industries-sf span {
    color: var(--blue-dark); background: var(--blue-pale); border-color: rgba(6,106,254,0.2);
}
.arc-industries-sf span img { width: 16px; height: 16px; object-fit: contain; }

.arc-list { list-style: none; display: flex; flex-direction: column; gap: 7px; margin-bottom: 20px; }
.arc-list li { font-size: 0.88rem; color: var(--text-body); padding-left: 14px; position: relative; }
.arc-list li::before { content: '→'; position: absolute; left: 0; color: var(--teal); font-size: 0.75rem; }
.arc-card-sf .arc-list li::before { color: var(--blue-bright); }

.arc-edu { display: flex; flex-direction: column; gap: 10px; border-top: 1px solid var(--border); padding-top: 16px; margin-top: 4px; }
.edu-item { display: flex; flex-direction: column; }
.edu-item strong { font-size: 0.85rem; color: var(--text-dark); }
.edu-item span { font-size: 0.78rem; color: var(--text-muted); }

.arc-mission-note {
    margin-top: 16px; font-size: 0.85rem; font-style: italic;
    color: var(--blue-mid); border-top: 1px solid var(--border); padding-top: 16px;
}

/* ── Certifications ── */
#certs { background: linear-gradient(135deg, var(--blue-dark) 0%, #012070 100%); }
#certs h2 { color: var(--white); }
#certs .section-sub { color: rgba(255,255,255,0.6); }

.certs-layout { margin-top: 36px; display: flex; flex-direction: column; gap: 20px; }

.certs-featured-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cert-hero {
    display: flex; align-items: center; gap: 16px;
    background: rgba(0,179,255,0.12); border: 1px solid rgba(0,179,255,0.35);
    border-radius: var(--radius); padding: 22px 24px;
    transition: background 0.2s;
}
.cert-hero:hover { background: rgba(0,179,255,0.2); }
.cert-hero-icon { font-size: 2rem; flex-shrink: 0; }
.cert-hero-img { width: 48px; height: 48px; object-fit: contain; flex-shrink: 0; }
.cert-hero-name { font-size: 1.05rem; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.cert-hero-sub { font-size: 0.78rem; color: var(--blue-sky); }

.certs-list-row {
    display: flex; flex-wrap: wrap; gap: 10px;
}
.cert-pill-item {
    display: flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.12);
    border-radius: 6px; padding: 10px 18px;
    font-size: 0.88rem; color: rgba(255,255,255,0.85); font-weight: 500;
    transition: background 0.2s;
}
.cert-pill-item:hover { background: rgba(255,255,255,0.13); }
.cert-check { color: var(--blue-sky); font-size: 0.7rem; }
.cert-pill-img { width: 22px; height: 22px; object-fit: contain; flex-shrink: 0; }

/* ── Impact ── */
#impact { background: var(--white); }
#impact h2 { margin-bottom: 8px; }
.impact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.impact-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 28px 24px; transition: transform 0.2s, box-shadow 0.2s;
}
.impact-card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(6,106,254,0.1); }
.impact-icon { font-size: 1.6rem; margin-bottom: 12px; }
.impact-card h3 { font-size: 1rem; color: var(--blue-dark); margin-bottom: 10px; }
.impact-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.65; }

/* Teal accent on impact section heading */
#impact h2 { color: var(--blue-dark); }
#impact::before {
    content: ''; display: block; height: 4px;
    background: linear-gradient(90deg, var(--teal) 0%, var(--blue-bright) 100%);
}

/* ── Testimonials ── */
#testimonials { background: linear-gradient(135deg, var(--blue-mid) 0%, var(--blue-dark) 100%); overflow: hidden; }
#testimonials h2 { color: var(--white); margin-bottom: 36px; }
.testimonial-track-wrapper { overflow: hidden; border-radius: var(--radius); }
.testimonial-track {
    display: flex; transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
}
.testimonial-card {
    min-width: 100%; background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.15); border-radius: var(--radius); padding: 36px 40px;
}
.quote { font-size: 1.1rem; color: rgba(255,255,255,0.92); line-height: 1.7; font-style: italic; margin-bottom: 16px; }
.attribution { font-size: 0.82rem; color: var(--blue-sky); font-weight: 500; }
.testimonial-nav { display: flex; align-items: center; justify-content: center; gap: 14px; margin-top: 20px; }
.tnav-btn {
    background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2);
    color: var(--white); width: 36px; height: 36px; border-radius: 50%;
    cursor: pointer; font-size: 1rem; transition: background 0.2s;
}
.tnav-btn:hover { background: rgba(255,255,255,0.2); }
.tnav-dots { display: flex; gap: 8px; }
.tnav-dot {
    width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.3);
    border: none; cursor: pointer; transition: background 0.2s; padding: 0;
}
.tnav-dot.active { background: var(--blue-sky); }

/* ── How I Work ── */
#work { background: var(--surface); }
#work h2 { margin-bottom: 8px; }
.work-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.work-card {
    border-left: 3px solid var(--teal); padding: 20px 20px 20px 24px;
    background: var(--white); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    box-shadow: 0 2px 12px rgba(6,165,154,0.07);
    transition: box-shadow 0.2s, transform 0.2s;
}
.work-card:hover { box-shadow: 0 6px 20px rgba(6,165,154,0.14); transform: translateY(-2px); }
.work-card h3 { color: var(--blue-dark); margin-bottom: 10px; }
.work-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.65; }

.work-grid-4 { grid-template-columns: repeat(4, 1fr); }
.work-grid-5 { grid-template-columns: repeat(5, 1fr); }
.work-principle {
    font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--teal); margin-bottom: 10px;
}

/* ── How I Show Up ── */
#showup { background: linear-gradient(135deg, var(--blue-dark) 0%, #012070 100%); }
#showup h2 { margin-bottom: 8px; color: var(--white); }
#showup .section-sub { color: rgba(255,255,255,0.6); }
.showup-grid { display: grid; grid-template-columns: 280px 1fr; gap: 28px; margin-top: 40px; }
.showup-card {
    background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius); padding: 28px 24px;
}
.showup-label {
    font-size: 0.72rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.1em; color: var(--blue-sky); margin-bottom: 10px;
}
.showup-entj { background: rgba(6,106,254,0.15); border-color: rgba(6,106,254,0.4); }
.showup-entj .showup-label { color: var(--teal-mid); }
.showup-type { font-size: 3rem; font-weight: 800; color: var(--white); line-height: 1; margin-bottom: 10px; }
.showup-entj p { font-size: 0.85rem; color: rgba(255,255,255,0.75); line-height: 1.6; }
.strengths-list { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.strength {
    font-size: 0.9rem; font-weight: 600; color: var(--white);
    padding: 8px 14px; background: rgba(255,255,255,0.08);
    border-radius: 6px; border-left: 3px solid var(--teal-mid);
}

/* ── Impact Accordion ── */
.impact-accordion { display: flex; flex-direction: column; gap: 12px; margin-top: 36px; }
.impact-cat-item {
    background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
    box-shadow: 0 2px 8px rgba(6,165,154,0.04);
    transition: box-shadow 0.2s;
}
.impact-cat-item:hover { box-shadow: 0 4px 16px rgba(6,165,154,0.1); }
.impact-cat-trigger {
    width: 100%; display: flex; align-items: center; gap: 14px;
    padding: 20px 24px; background: none; border: none; cursor: pointer;
    text-align: left; transition: background 0.15s;
}
.impact-cat-trigger:hover { background: var(--teal-light); }
.impact-cat-icon { font-size: 1.3rem; flex-shrink: 0; }
.impact-cat-title { font-size: 1rem; font-weight: 600; color: var(--text-dark); flex: 1; }
.impact-cat-caret { font-size: 0.8rem; color: var(--text-muted); transition: transform 0.25s; flex-shrink: 0; }
.impact-cat-item.open .impact-cat-caret { transform: rotate(180deg); }
.impact-cat-item.open > .impact-cat-trigger { background: var(--teal-light); }
.impact-cat-item.open { border-color: var(--teal); box-shadow: 0 4px 20px rgba(6,165,154,0.15); }
.impact-cat-body {
    max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.25s ease;
    padding: 0 20px;
}
.impact-cat-item.open .impact-cat-body { max-height: 600px; padding: 0 20px 20px; }
.impact-cards-row {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px;
}
.impact-card {
    background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 20px; transition: transform 0.2s, box-shadow 0.2s;
    border-top: 3px solid var(--teal);
    box-shadow: 0 2px 8px rgba(6,165,154,0.06);
}
.impact-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(6,165,154,0.14); }
.impact-card h3 { font-size: 0.92rem; color: var(--blue-dark); margin-bottom: 8px; }
.impact-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* ── Taco ── */
#taco { background: var(--white); }
#taco h2 { margin-bottom: 6px; }
.taco-intro { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 28px; max-width: none; }
.taco-intro a { color: var(--blue-bright); }

.taco-accordion { display: flex; flex-direction: column; gap: 10px; }
.taco-item {
    background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
    box-shadow: 0 2px 8px rgba(6,165,154,0.04);
    transition: box-shadow 0.2s;
}
.taco-item:hover { box-shadow: 0 4px 14px rgba(6,165,154,0.1); }
.taco-trigger {
    width: 100%; display: flex; align-items: center; gap: 14px;
    padding: 18px 22px; background: none; border: none; cursor: pointer;
    text-align: left; transition: background 0.15s;
}
.taco-trigger:hover { background: var(--teal-light); }
.taco-emoji { font-size: 1.4rem; flex-shrink: 0; }
.taco-title { font-size: 0.95rem; font-weight: 600; color: var(--text-dark); flex: 1; }
.taco-caret {
    font-size: 0.8rem; color: var(--text-muted); transition: transform 0.25s; flex-shrink: 0;
}
.taco-item.open { border-color: var(--teal); box-shadow: 0 4px 20px rgba(6,165,154,0.15); }
.taco-item.open .taco-caret { transform: rotate(180deg); }
.taco-item.open > .taco-trigger { background: var(--teal-light); }
.taco-body {
    max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.25s ease;
    padding: 0 22px;
}
.taco-item.open .taco-body { max-height: 400px; padding: 0 22px 20px; }
.taco-body p { font-size: 0.9rem; color: var(--text-body); line-height: 1.75; }

.taco-footer {
    margin-top: 20px; padding: 16px 20px;
    background: var(--teal-light); border-radius: var(--radius);
    border-left: 4px solid var(--teal);
    font-size: 0.85rem; color: var(--text-muted);
}
.taco-footer strong { color: var(--teal-dark); }

/* ── Skills ── */
#skills { background: linear-gradient(180deg, var(--white) 0%, var(--teal-light) 100%); }
.skills-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 40px; }
.skill-group {
    background: var(--white); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 24px 20px; box-shadow: 0 2px 12px rgba(6,165,154,0.07);
    border-top: 3px solid var(--teal);
}
.skill-group h3 {
    font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--teal-dark); margin-bottom: 14px;
    border-bottom: 1px solid rgba(6,165,154,0.2); padding-bottom: 8px;
}
.skill-group-sf { border-top-color: var(--blue-bright); }
.skill-group-sf h3 { color: var(--blue-dark); border-bottom-color: var(--border); }
.skill-group ul { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.skill-group li { font-size: 0.88rem; color: var(--text-body); padding-left: 12px; position: relative; }
.skill-group li::before { content: '→'; position: absolute; left: 0; color: var(--teal); font-size: 0.75rem; font-weight: 700; }
.skill-group-sf li::before { color: var(--blue-bright); }

/* ── Connect ── */
#connect { background: linear-gradient(135deg, var(--teal-light) 0%, var(--blue-pale) 50%, #dceeff 100%); }
.connect-inner { max-width: 560px; text-align: center; margin: 0 auto; }
.connect-inner h2 { margin-bottom: 16px; }
.connect-inner > p { font-size: 1rem; color: var(--text-muted); margin-bottom: 32px; }
.connect-links { display: flex; gap: 16px; justify-content: center; margin-bottom: 24px; }
.connect-note { font-size: 0.85rem; color: var(--text-muted); }
.connect-note a { color: var(--blue-bright); }

/* ── Footer ── */
footer { background: var(--blue-dark); padding: 24px 0; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; font-size: 0.82rem; color: rgba(255,255,255,0.5); }
.footer-inner a { color: rgba(255,255,255,0.6); }
.footer-inner a:hover { color: var(--white); text-decoration: none; }
.footer-note { font-style: italic; }

/* ── Responsive ── */
@media (max-width: 1000px) {
    .certs-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 900px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-stats { flex-direction: row; flex-wrap: wrap; }
    .stat-card { flex: 1 1 160px; }
    .about-inner { grid-template-columns: 1fr; }
    .about-pills { flex-direction: row; flex-wrap: wrap; padding-top: 0; }
    .arc-grid { grid-template-columns: 1fr; }
    .impact-grid { grid-template-columns: repeat(2, 1fr); }
    .work-grid { grid-template-columns: 1fr; }
    .work-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .work-grid-5 { grid-template-columns: repeat(3, 1fr); }
    .skills-grid { grid-template-columns: repeat(2, 1fr); }
    .showup-grid { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
    .certs-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 560px) {
    section { padding: 56px 0; }
    .impact-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    nav { gap: 14px; }
    nav a { font-size: 0.8rem; }
    .certs-grid { grid-template-columns: repeat(2, 1fr); }
}