.self-study-page {
  background:
    radial-gradient(circle at 11% 82%, rgba(190, 142, 28, .17), transparent 25rem),
    radial-gradient(circle at 73% 10%, rgba(212, 175, 55, .065), transparent 31rem),
    var(--black);
}

.self-study-workspace { grid-template-columns: minmax(20rem, 31%) minmax(0, 1fr); }
.self-study-navigation { padding-top: clamp(1.8rem, 2.8vw, 2.8rem); }
.self-study-nav-intro { margin-top: 1rem; }
.self-study-nav-intro p { margin-bottom: .75rem; }

.self-study-quote {
  position: relative;
  z-index: 1;
  margin: 0 0 1rem;
  padding: .6rem 1.1rem .7rem;
}

.self-study-quote > p {
  position: relative;
  max-width: 22rem;
  margin: 0;
  color: #dfdcd4;
  font: 500 clamp(.8rem, 1.02vw, .98rem)/1.55 var(--sans);
}

.self-study-quote > p::before,
.self-study-quote > p::after {
  position: absolute;
  color: rgba(240, 207, 112, .85);
  font: 400 2.5rem/1 Georgia, serif;
}

.self-study-quote > p::before { content: "“"; left: -1.05rem; top: -.22rem; }
.self-study-quote > p::after { content: "”"; right: -.75rem; bottom: -.55rem; }
.self-study-quote footer { margin-top: .65rem; display: grid; gap: .1rem; }
.self-study-quote strong { color: var(--gold-light); font: 600 .72rem/1.35 var(--serif); }
.self-study-quote span { color: #9d998f; font: 400 .59rem/1.4 var(--sans); }
.self-study-tabs button { min-height: 2.65rem; font-size: clamp(.68rem, .9vw, .86rem); }

.self-study-content { padding-top: clamp(2rem, 3vw, 3.2rem); }
.self-study-lead { max-width: 67rem; line-height: 1.7; }
.self-study-pillars { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .75rem; margin-top: 1.1rem; }
.self-study-pillars article,
.self-study-course-grid article,
.self-study-certificate-grid article,
.self-study-status-card {
  border: 1px solid rgba(212,175,55,.42);
  padding: .85rem .95rem;
  background: rgba(0,0,0,.18);
}
.self-study-pillars span,
.self-study-course-grid article > span,
.self-study-certificate-grid article > span,
.self-study-status-card > span {
  color: var(--gold-light);
  font: 600 .58rem/1.35 var(--sans);
  letter-spacing: .16em;
}
.self-study-pillars h3,
.self-study-course-grid h3,
.self-study-certificate-grid h3,
.self-study-status-card h3 {
  margin: .35rem 0 0;
  color: #e8e4db;
  font: 600 clamp(.78rem, 1vw, .95rem)/1.35 var(--serif);
  letter-spacing: .02em;
}
.self-study-pillars p,
.self-study-course-grid p,
.self-study-certificate-grid p,
.self-study-status-card p {
  margin: .38rem 0 0;
  color: #bdb9b0;
  font: 400 clamp(.64rem, .75vw, .73rem)/1.52 var(--sans);
}
.self-study-next { margin-top: 1.15rem; }

.self-study-panel { padding-top: clamp(.5rem, 1.6vw, 1.4rem); }
.self-study-panel > header > p { margin: 0 0 .35rem; color: var(--gold-light); font: 600 .66rem/1.4 var(--sans); letter-spacing: .2em; }
.self-study-panel > header h2 { margin: 0; color: #ebe8e1; font: 600 clamp(1.2rem, 1.65vw, 1.7rem)/1.2 var(--serif); letter-spacing: .045em; }
.self-study-panel-lead { max-width: 66rem; margin: .8rem 0 1rem; color: #c8c4bb; font: 400 clamp(.74rem, .9vw, .86rem)/1.6 var(--sans); }
.self-study-course-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: .65rem; }
.self-study-course-grid article { min-height: 7rem; }
.self-study-certificate-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .75rem; margin-top: 1rem; }
.self-study-certificate-grid article { min-height: 8.5rem; }

.self-study-steps { list-style: none; margin: 1rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: .55rem; }
.self-study-steps li { min-height: 8rem; border-top: 1px solid var(--gold-light); padding: .75rem; background: rgba(212,175,55,.025); }
.self-study-steps li > span { color: var(--gold-light); font: 600 .58rem/1.3 var(--sans); letter-spacing: .13em; }
.self-study-steps h3 { margin: .55rem 0 0; color: #e8e4db; font: 600 .9rem/1.35 var(--serif); }
.self-study-steps p { margin: .35rem 0 0; color: #bdb9b0; font: 400 .66rem/1.52 var(--sans); }
.self-study-notice { max-width: 66rem; margin: 1rem 0 0; border-left: 2px solid var(--gold-light); padding: .65rem .85rem; color: #bdb9b0; background: rgba(212,175,55,.035); font: 400 .7rem/1.55 var(--sans); }
.self-study-notice strong { color: #e7e2d9; }
.self-study-status-card { max-width: 54rem; margin-top: 1rem; padding: 1.15rem 1.25rem; }
.self-study-status-card h3 { font-size: clamp(1rem, 1.3vw, 1.22rem); }
.self-study-status-card p { max-width: 48rem; font-size: clamp(.7rem, .82vw, .8rem); }
.self-study-actions { margin-top: 1rem; }
.self-study-actions a { min-width: min(100%, 20rem); border: 1px solid var(--gold-light); padding: .65rem .9rem; color: var(--gold-light); display: inline-flex; align-items: center; justify-content: space-between; gap: 1rem; font: 600 .66rem/1.4 var(--sans); letter-spacing: .06em; text-decoration: none; text-transform: uppercase; }
.self-study-actions a:hover,
.self-study-actions a:focus-visible { color: #fff3b2; background: rgba(212,175,55,.06); }

.certificate-preview-launcher { margin-top: 1rem; border-top: 1px solid rgba(212,175,55,.38); padding-top: .9rem; display: grid; grid-template-columns: minmax(14rem,.8fr) minmax(0,1.2fr); gap: 1rem 1.5rem; align-items: end; }
.certificate-preview-launcher > div:first-child > span { color: var(--gold-light); font: 600 .58rem/1.35 var(--sans); letter-spacing: .16em; }
.certificate-preview-launcher h3 { margin: .25rem 0 0; color: #e8e4db; font: 600 clamp(.9rem,1.1vw,1.05rem)/1.35 var(--serif); }
.certificate-preview-launcher p { margin: .3rem 0 0; color: #aaa69d; font: 400 .66rem/1.5 var(--sans); }
.certificate-preview-links { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .45rem; }
.certificate-preview-links a { border: 1px solid rgba(212,175,55,.55); padding: .6rem .72rem; color: #d9d5cc; background: rgba(0,0,0,.2); display: flex; justify-content: space-between; gap: .8rem; cursor: pointer; font: 600 .62rem/1.3 var(--sans); letter-spacing: .07em; text-decoration: none; text-transform: uppercase; }
.certificate-preview-links a:hover,
.certificate-preview-links a:focus-visible { border-color: var(--gold-light); color: var(--gold-light); background: rgba(212,175,55,.055); }

.certificate-dialog { width: min(84rem,calc(100% - 2rem)); max-width: none; max-height: calc(100svh - 2rem); border: 1px solid rgba(212,175,55,.7); padding: 0; color: #eeeae1; background: #050505; box-shadow: 0 0 4rem rgba(0,0,0,.85); }
.certificate-dialog::backdrop { background: rgba(0,0,0,.88); backdrop-filter: blur(.3rem); }
.certificate-dialog-shell { max-height: calc(100svh - 2rem); display: grid; grid-template-rows: auto minmax(0,1fr) auto; }
.certificate-dialog-bar,
.certificate-dialog-footer { border-bottom: 1px solid rgba(212,175,55,.25); padding: .75rem 1rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.certificate-dialog-bar { position: relative; }
.certificate-dialog-bar p,
.certificate-dialog-footer p { margin: 0; color: #a9a59c; font: 500 .56rem/1.4 var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.certificate-dialog-bar button,
.certificate-dialog-footer button { border: 0; color: var(--gold-light); background: transparent; cursor: pointer; }
.certificate-dialog-bar button { flex: 0 0 auto; margin-left: auto; font-size: 1.5rem; line-height: 1; }
.certificate-dialog-footer { border-top: 1px solid rgba(212,175,55,.25); border-bottom: 0; }
.certificate-dialog-footer button { border-bottom: 1px solid var(--gold-dark); padding: .35rem 0; font: 600 .58rem/1.3 var(--sans); letter-spacing: .1em; text-transform: uppercase; }
.certificate-dialog-content { min-height: 0; overflow: hidden; padding: clamp(.55rem,1.2vw,1rem); display: grid; place-items: center; background: radial-gradient(circle at 50% 20%,rgba(212,175,55,.08),transparent 35rem); }
.certificate-preview-image { display:block; width:auto; max-width:100%; height:auto; max-height:calc(100svh - 9.5rem); object-fit:contain; box-shadow:0 1rem 3rem rgba(0,0,0,.55); }

.certificate-sheet { position: relative; width: min(70rem,100%,calc((100svh - 9.5rem) * 1.414)); aspect-ratio: 1.414 / 1; min-height: 0; padding: clamp(.65rem,1.2vw,1.15rem); color: #17130e; background: #fffefa; box-shadow: 0 1rem 3rem rgba(0,0,0,.55); font-family: var(--sans); }
.certificate-sheet::before,
.certificate-sheet::after { content: ""; position: absolute; pointer-events: none; }
.certificate-sheet::before { inset: .72rem; border: 2px solid #b88620; }
.certificate-sheet::after { inset: 1.02rem; border: 1px solid #d7ad51; }
.certificate-inner { position: relative; z-index: 1; height: 100%; border: 1px solid rgba(184,134,32,.7); padding: clamp(1.2rem,2.5vw,2.4rem) 3rem 1.35rem; display: flex; flex-direction: column; align-items: center; text-align: center; }
.certificate-sheet img { width: clamp(3.4rem,6vw,5.2rem); height: clamp(3.4rem,6vw,5.2rem); object-fit: contain; }
.certificate-brand { margin: .25rem 0 .45rem; color: #17130e; font: 600 clamp(.68rem,1.1vw,.96rem)/1.2 var(--serif); letter-spacing: .35em; }
.certificate-sheet h2 { margin: .15rem 0 0; color: #090806; font: 600 clamp(1.5rem,3vw,2.75rem)/1.08 var(--serif); letter-spacing: .07em; }
.certificate-programme { margin: .7rem 0 0; color: #a46f0c; font: 600 clamp(1rem,1.8vw,1.65rem)/1.2 var(--serif); }
.certificate-awarded { margin: .7rem 0 .15rem; font-size: .8rem; letter-spacing: .08em; }
.certificate-sheet h3 { width: min(48rem,86%); margin: 0; border-bottom: 1px solid #b88620; padding-bottom: .45rem; color: #0d0b08; font: 600 clamp(1.45rem,3.1vw,2.8rem)/1.05 var(--serif); letter-spacing: .08em; }
.certificate-copy { margin: .65rem 0 .25rem; color: #403b34; font-size: .72rem; letter-spacing: .08em; }
.certificate-sheet strong { color: #a46f0c; font: 600 clamp(1rem,1.8vw,1.55rem)/1.25 var(--serif); letter-spacing: .07em; }
.certificate-level-note { max-width: 42rem; margin: .35rem 0 0; color: #403b34; font-size: clamp(.62rem,.85vw,.76rem); line-height: 1.55; letter-spacing: .04em; }
.certificate-signature { margin-top: auto; display: grid; gap: .15rem; }
.certificate-signature span { color: #111; font: italic 1.45rem/1.1 Georgia,serif; }
.certificate-signature small { font-size: .61rem; letter-spacing: .07em; }
.certificate-meta { width: 100%; margin-top: .65rem; display: flex; justify-content: space-between; gap: 1rem; color: #29251f; font-size: .58rem; letter-spacing: .04em; }
.certificate-sample { margin: .5rem 0 0; color: #9a680f; font-size: .55rem; letter-spacing: .18em; }

.certificate-intermediate::before { border-width: 3px; }
.certificate-intermediate .certificate-inner { border-style: double; border-width: 3px; }
.certificate-advanced { background: linear-gradient(135deg,#18150f 0 4.2rem,#fffefa 4.25rem calc(100% - 4.25rem),#18150f calc(100% - 4.2rem)); }
.certificate-advanced::before { border-width: 3px; }
.certificate-professional { background: linear-gradient(135deg,#090806 0 6rem,#b88620 6.05rem 6.35rem,#fffefa 6.4rem calc(100% - 6.4rem),#b88620 calc(100% - 6.35rem) calc(100% - 6.05rem),#090806 calc(100% - 6rem)); }
.certificate-professional::before { border: 4px double #b88620; }
.certificate-professional::after { border-color: #16120b; }
.certificate-professional .certificate-inner { border-color: #b88620; }

@media (max-width: 1100px) {
  .self-study-course-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .self-study-steps { grid-template-columns: repeat(3, minmax(0,1fr)); }
}

@media (max-width: 900px) {
  .self-study-workspace { grid-template-columns: 1fr; }
  .self-study-quote > p { max-width: 38rem; }
}

@media (max-width: 650px) {
  .self-study-pillars,
  .self-study-course-grid,
  .self-study-certificate-grid,
  .self-study-steps { grid-template-columns: 1fr; }
  .self-study-pillars article,
  .self-study-course-grid article,
  .self-study-certificate-grid article,
  .self-study-steps li { min-height: 0; }
  .certificate-preview-launcher { grid-template-columns: 1fr; }
  .certificate-preview-links { grid-template-columns: 1fr; }
  .certificate-dialog { width: 100%; height: 100svh; max-height: none; margin: 0; border: 0; }
  .certificate-dialog-shell { height: 100svh; max-height: none; }
  .certificate-dialog-footer { align-items: flex-start; flex-direction: column; }
  .certificate-dialog-bar,
  .certificate-dialog-footer { padding: .55rem .7rem; }
  .certificate-dialog-bar { padding-right: 2.75rem; }
  .certificate-dialog-bar button { position: absolute; top: .22rem; right: .65rem; }
  .certificate-dialog-footer p { display: none; }
  .certificate-dialog-content { padding: .4rem; }
  .certificate-preview-image { max-height:calc(100svh - 6.5rem); }
  .certificate-sheet { width: min(100%,calc((100svh - 6.8rem) * 1.414)); min-height: 0; aspect-ratio: 1.414 / 1; padding: .42rem; }
  .certificate-inner { padding: .5rem .65rem .45rem; }
  .certificate-sheet img { width: 2.35rem; height: 2.35rem; }
  .certificate-brand { margin: .08rem 0 .18rem; font-size: .48rem; }
  .certificate-sheet h2 { font-size: clamp(.72rem,4vw,1rem); }
  .certificate-programme { margin-top: .25rem; font-size: clamp(.62rem,3.5vw,.85rem); }
  .certificate-awarded { margin: .25rem 0 .05rem; font-size: .48rem; }
  .certificate-sheet h3 { width: 96%; padding-bottom: .16rem; font-size: clamp(.82rem,5vw,1.15rem); }
  .certificate-copy { margin: .25rem 0 .08rem; font-size: .4rem; }
  .certificate-sheet strong { font-size: clamp(.58rem,3.2vw,.78rem); }
  .certificate-level-note { margin-top: .1rem; font-size: .38rem; line-height: 1.3; }
  .certificate-signature span { font-size: .75rem; }
  .certificate-signature small,
  .certificate-meta { font-size: .34rem; }
  .certificate-meta { margin-top: .2rem; flex-direction: row; gap: .4rem; }
  .certificate-sample { margin-top: .16rem; font-size: .31rem; }
  .certificate-sheet h3 { width: 96%; }
  .certificate-professional { background: linear-gradient(135deg,#090806 0 1.3rem,#b88620 1.35rem 1.45rem,#fffefa 1.5rem calc(100% - 1.5rem),#b88620 calc(100% - 1.45rem) calc(100% - 1.35rem),#090806 calc(100% - 1.3rem)); }
}