:root {
    --navy:    #000038;
    --magenta: #9B1F54;
    --orange:  #E55318;
    --white:   #FFFFFF;
    --cream:   #F7F5F1;
    --silk:    #F0EDE8;
    --ink:     #0C0C28;
    --slate:   #5A5A72;
    --rule:    #E0DDD8;
    --orange-tint: #FEF3EC;
    --magenta-tint:#F6EBF1;
  }

  * { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }

  body {
    background: var(--white);
    color: var(--ink);
    font-family: 'Montserrat', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
  }

  .wrap { 
    max-width: 1180px; 
    margin: 0 auto; 
    padding: 0 32px; 
    margin-bottom: 5vw;
  }

  /* ========== HERO ========== */
  .hero { padding: 80px 0 48px; }
  .hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--magenta);
    margin-bottom: 24px;
  }
  .hero-kicker::before {
    content: "";
    width: 36px;
    height: 2px;
    background: var(--magenta);
  }
  .hero h1 {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.02;
    letter-spacing: -0.02em;
    color: var(--navy);
    margin-bottom: 20px;
  }
  .hero h1 .navy { color: var(--navy); }
  .hero h1 .mag  { color: var(--magenta); }
  .hero h1 .mark {
    color: var(--magenta);
  }
  .hero p.lead {
    font-size: 18px;
    color: var(--slate);
    max-width: 720px;
    font-weight: 400;
  }

  /* ========== KEY MESSAGE BAR ========== */
  .key-msg {
    margin-top: 40px;
    background: var(--navy);
    color: var(--white);
    padding: 28px 36px;
    border-radius: 4px;
    display: flex;
    gap: 24px;
    align-items: center;
  }
  .key-msg-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--magenta);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 22px;
    color: var(--white);
  }
  .key-msg-text {
    font-size: 15.5px;
    font-weight: 400;
    line-height: 1.55;
  }
  .key-msg-text strong { font-weight: 700; }
  .key-msg-text em {
    font-style: normal;
    color: var(--orange);
    font-weight: 600;
  }
  .key-msg-text .primary,
  .key-msg-text .secondary { display: block; }
  .key-msg-text .secondary {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255,255,255,0.18);
    font-size: 14px;
    color: rgba(255,255,255,0.82);
  }
  .key-msg-text .secondary strong { color: var(--white); }

  /* ========== SEMESTER NAV ========== */
  .semnav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--white);
    padding: 16px 0;
    margin-top: 48px;
    border-bottom: 1px solid var(--rule);
  }
  .semnav-inner {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
  }
  .semnav-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--magenta);
    margin-right: 16px;
  }
  .semnav a {
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    color: var(--navy);
    padding: 8px 18px;
    border: 1px solid var(--rule);
    border-radius: 999px;
    background: var(--white);
    transition: all 0.2s ease;
  }
  .semnav a:hover { border-color: var(--magenta); color: var(--magenta); }
  .semnav a.current {
    background: var(--navy);
    color: var(--white);
    border-color: var(--navy);
  }

  /* ========== SEMESTER SECTION ========== */
  .semester { padding: 64px 0 24px; }
  .semester + .semester { border-top: 1px solid var(--rule); }

  .sem-head {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: start;
    margin-bottom: 40px;
    position: relative;
  }
  .sem-numeral {
    position: absolute;
    top: -20px;
    right: 0;
    font-size: clamp(80px, 14vw, 180px);
    font-weight: 800;
    color: var(--magenta);
    opacity: 0.6;
    letter-spacing: -0.04em;
    line-height: 1;
    pointer-events: none;
    user-select: none;
    z-index: 0;
  }
  .sem-head > div { position: relative; z-index: 1; }
  .sem-kicker {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
  }
  .sem-kicker::before {
    content: "";
    width: 28px;
    height: 2px;
    background: var(--magenta);
  }
  .sem-kicker span {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--magenta);
  }
  .sem-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    color: var(--navy);
    letter-spacing: -0.02em;
    line-height: 1;
  }
  .sem-title .mark {
    color: var(--magenta);
  }
  .sem-subtitle {
    font-size: 14px;
    font-style: italic;
    color: var(--slate);
    margin-top: 8px;
  }
  .sem-range {
    font-size: 14px;
    font-weight: 500;
    color: var(--slate);
    text-align: right;
    white-space: nowrap;
    padding-top: 12px;
  }

  /* ========== ACTION CARDS ========== */
  .action-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
  }
  .action-card {
    background: var(--white);
    border: 2px solid var(--orange);
    border-radius: 4px;
    padding: 28px 32px;
  }
  .action-card .card-scope {
    display: block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--magenta);
    margin-bottom: 14px;
  }
  .action-card .card-scope::before {
    content: "◆ ";
    color: var(--magenta);
  }
  .action-card .pill {
    display: inline-block;
    background: var(--orange);
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 8px 14px;
    border-radius: 3px;
    margin-bottom: 20px;
  }
  .action-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: -0.01em;
    margin-bottom: 8px;
  }
  .action-card .desc {
    font-size: 14px;
    color: var(--slate);
    line-height: 1.5;
    margin-bottom: 20px;
  }
  .action-card hr {
    border: none;
    border-top: 1px solid var(--rule);
    margin-bottom: 18px;
  }
  .action-card .date-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--slate);
    margin-bottom: 6px;
  }
  .action-card .date-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--navy);
    letter-spacing: -0.01em;
  }

  /* ========== EVENTS TABLE ========== */
  .events-block {
    background: var(--white);
    border: 1px solid var(--rule);
    border-top: 3px solid var(--magenta);
    border-radius: 4px;
    overflow: hidden;
  }
  .events-head {
    background: var(--navy);
    color: var(--white);
    padding: 18px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
  }
  .events-head h4 {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }
  .events-head .note {
    font-size: 12px;
    opacity: 0.75;
    font-weight: 400;
  }
  .events-table {
    width: 100%;
    border-collapse: collapse;
  }
  .events-table tr { border-bottom: 1px solid var(--rule); }
  .events-table tr:last-child { border-bottom: none; }
  .events-table td {
    padding: 16px 28px;
    font-size: 15px;
    vertical-align: middle;
  }
  .events-table td.date-col {
    width: 210px;
    font-weight: 600;
    color: var(--navy);
    white-space: nowrap;
  }
  .events-table td.event-col {
    color: var(--ink);
    font-weight: 400;
  }
  .events-table td.event-col em {
    font-style: italic;
    color: var(--slate);
    font-size: 14px;
  }
  .events-table td.tag-col {
    width: 130px;
    text-align: right;
  }
  .events-table .tag {
    display: inline-block;
    padding: 4px 10px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 3px;
  }
  .tag-exam     { background: var(--magenta-tint); color: var(--magenta); }
  .tag-deadline { background: var(--orange-tint); color: var(--orange); }
  .tag-milestone{ background: #EEEEF5; color: var(--navy); }
  .events-table tr.critical td.date-col { color: var(--orange); }
  .events-table tr.critical td.event-col { font-weight: 600; }
  .events-table tr:hover { background: var(--silk); }

  /* ========== SUMMER NOTE ========== */
  .summer-note {
    margin-top: 56px;
    background: var(--silk);
    border-left: 3px solid var(--magenta);
    padding: 28px 32px;
    border-radius: 3px;
  }
  .summer-note h4 {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--magenta);
    margin-bottom: 10px;
  }
  .summer-note p {
    font-size: 15px;
    color: var(--ink);
    line-height: 1.6;
    max-width: 820px;
  }

  /* ========== NOTES ========== */
  .notes-section {
    margin-top: 80px;
    padding-top: 48px;
    border-top: 1px solid var(--rule);
  }
  .notes-section h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 28px;
    letter-spacing: -0.01em;
    display: inline-block;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--magenta);
  }
  .notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
  }
  .note-item {
    padding: 24px 0 0;
    border-top: 2px solid var(--magenta);
  }
  .note-item h5 {
    font-size: 14px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 8px;
    letter-spacing: 0.02em;
  }
  .note-item p {
    font-size: 14px;
    color: var(--slate);
    line-height: 1.55;
  }
  .note-item strong {
    color: var(--ink);
    font-weight: 600;
  }

  /* ========== META ========== */
  .meta {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--rule);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 12px;
    color: var(--slate);
  }

  /* ========== MOBILE ========== */
  @media (max-width: 820px) {
    .wrap { 
      padding: 0 20px; 
      margin-bottom: 20vw;
  }
    .hero { padding: 48px 0 32px; }
    .sem-head { grid-template-columns: 1fr; }
    .sem-range { text-align: left; padding-top: 0; }
    .action-cards { grid-template-columns: 1fr; gap: 14px; margin-bottom: 32px; }
    .action-card { padding: 22px 24px; }
    .action-card .date-value { font-size: 24px; }
    .events-table td { padding: 14px 18px; font-size: 14px; }
    .events-table td.date-col { width: auto; }
    .events-table td.tag-col { display: none; }
    .events-head { padding: 14px 18px; }
    .key-msg { padding: 22px 24px; flex-direction: column; align-items: flex-start; }
    .semnav-label { display: none; }
    .semnav a { padding: 6px 12px; font-size: 13px; }
  }