:root {
    --paper: #ffffff;
    --paper-deep: #f4f6f8;
    --ink: #181a1d;
    --muted: #5e646c;
    --accent: #285f9e;
    --accent-dark: #194878;
    --accent-soft: #7397c1;
    --line: #d9dde2;
    --card: #fbfcfd;
    --max-width: 1120px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    padding: 0 20px;
    background: var(--paper);
    color: var(--ink);
    font-family: "Bookman Old Style", Bookman, Georgia, serif;
    font-size: 16px;
    line-height: 1.7;
}

a {
    color: var(--accent-dark);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
}

a:hover {
    color: var(--accent);
}

a:focus-visible {
    outline: 3px solid rgba(40, 95, 158, 0.3);
    outline-offset: 4px;
    border-radius: 2px;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 10;
    padding: 8px 12px;
    background: var(--ink);
    color: var(--paper);
    transform: translateY(-160%);
}

.skip-link:focus {
    color: var(--paper);
    transform: translateY(0);
}

.site-header,
main {
    width: min(100%, var(--max-width));
    margin-inline: auto;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 24px 0 18px;
    border-bottom: 1px solid var(--line);
}

.site-nav {
    display: flex;
    gap: 24px;
}

.site-nav a {
    color: var(--muted);
    font-size: 0.94rem;
    text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    color: var(--ink);
}

.site-nav a[aria-current="page"] {
    text-decoration: underline;
    text-decoration-color: var(--accent-soft);
    text-decoration-thickness: 2px;
    text-underline-offset: 0.42em;
}

.profile {
    padding: clamp(46px, 8vw, 86px) 0 68px;
}

.profile-content {
    max-width: 100%;
}

.eyebrow {
    margin: 0 0 5px;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    overflow-wrap: break-word;
}

h1 {
    margin: 0 0 28px;
    font-size: clamp(2.35rem, 6vw, 4.5rem);
    font-weight: 500;
    letter-spacing: -0.035em;
    line-height: 1.04;
}

.profile-section p {
    margin: 0 0 1.2em;
}

.profile-section + .profile-section {
    margin-top: 44px;
    padding-top: 30px;
    border-top: 1px solid var(--line);
}

.profile-section h2 {
    margin: 0 0 18px;
    color: var(--accent-dark);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.045em;
    text-transform: uppercase;
}

.portrait {
    float: right;
    width: clamp(240px, 28vw, 310px);
    margin: 7px 0 30px clamp(34px, 6vw, 72px);
    border: 1px solid var(--line);
    background: var(--card);
}

.portrait img {
    display: block;
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    object-position: center bottom;
}

.contact-links {
    clear: both;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin-top: 34px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
}

.contact-links a {
    font-size: 0.94rem;
    font-weight: 700;
}

.notes-hero {
    max-width: 760px;
    padding: clamp(48px, 9vw, 94px) 0 40px;
}

.notes-hero h1 {
    margin-bottom: 22px;
}

.notes-intro {
    max-width: 660px;
    margin: 0;
    color: var(--muted);
    font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.notes-section {
    padding: 12px 0 72px;
}

.section-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.section-heading h2 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 700;
}

.course-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.course-card {
    display: flex;
    flex-direction: column;
    padding: clamp(22px, 4vw, 30px);
    border: 1px solid var(--line);
    background: var(--card);
    box-shadow: 0 10px 28px rgba(24, 26, 29, 0.06);
}

.course-card h3 {
    margin: 0 0 4px;
    font-size: 1.35rem;
    line-height: 1.25;
}

.course-meta {
    margin: 0 0 14px;
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.course-description {
    margin: 0 0 24px;
    color: var(--muted);
}

.note-list {
    display: grid;
    gap: 9px;
    margin: auto 0 0;
    padding: 0;
    list-style: none;
}

.note-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 13px 0;
    border-top: 1px solid var(--line);
    text-decoration: none;
}

.note-title {
    font-weight: 700;
}

.note-details {
    display: block;
    margin-top: 2px;
    color: var(--muted);
    font-size: 0.8rem;
}

.note-format {
    flex: 0 0 auto;
    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.empty-state {
    padding: clamp(34px, 7vw, 60px);
    border: 1px dashed #b9c0c9;
    background: #f8f9fb;
    text-align: center;
}

.empty-state h3 {
    margin: 0 0 8px;
    font-size: 1.2rem;
}

.empty-state p {
    max-width: 520px;
    margin: 0 auto;
    color: var(--muted);
}

[hidden] {
    display: none !important;
}

@media (max-width: 760px) {
    body {
        padding-inline: 16px;
    }

    .profile {
        padding-top: 44px;
    }

    .portrait {
        float: none;
        width: min(100%, 380px);
        margin: 0 0 34px;
    }

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

@media (max-width: 420px) {
    .site-header {
        padding-top: 18px;
    }

    .site-nav {
        gap: 16px;
    }

    h1 {
        font-size: 2.35rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}