:root{
    --night: #0b1c33;
    --night-deep: #071322;
    --ivory: #f6efdd;
    --gold: #c9a349;
    --gold-bright: #e8c873;
    --teal: #2c7a72;
    --rose: #a3564a;
    --violet: #8f7fc9;
    --amber: #b58a4e;
    --sage: #6f9c6a;
    --blue-cat: #7ea3c9;
    --line: rgba(201,163,73,0.28);
    --serif: 'Cormorant Garamond', serif;
    --arabic: 'Amiri', serif;
    --sans: 'Jost', sans-serif;
    --teal-tag: #8fd6c9;
    --rose-tag: #e2a89c;
    --violet-tag: #c6bce8;
    --amber-tag: #e0bd8a;
    --blue-tag: #a9c6e3;
    --sage-tag: #a7cba1;
    --diagram-stage: rgba(7,19,34,0.92);
    --ivory-rgb: 246,239,221;
    --night-deep-rgb: 7,19,34;
  }
  body.light-mode{
    --night: #f5ecd8;
    --night-deep: #ede1c8;
    --ivory: #0b1c33;
    --gold: #a6791f;
    --gold-bright: #8a5f14;
    --teal: #1f5951;
    --rose: #7c3d33;
    --violet: #5f4fa3;
    --amber: #8a611f;
    --sage: #4d7248;
    --blue-cat: #3a5f83;
    --line: rgba(11,28,51,0.22);
    --teal-tag: #146157;
    --rose-tag: #8a3d2e;
    --violet-tag: #4a3891;
    --amber-tag: #7a5311;
    --blue-tag: #2a4d70;
    --sage-tag: #33562e;
    --diagram-stage: rgba(7,19,34,0.92);
    --ivory-rgb: 11,28,51;
    --night-deep-rgb: 237,225,200;
  }
  body.light-mode ::selection{background:var(--gold); color:var(--ivory);}
  body.light-mode nav{background:linear-gradient(to bottom, rgba(253,248,236,0.94), transparent);}
  body.light-mode .card{box-shadow:0 1px 4px rgba(42,36,16,0.08);}
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth; font-size:18px; transition:font-size .2s ease;}
  html.text-lg{font-size:19.5px;}
  html.text-xl{font-size:22px;}
  html.text-xxl{font-size:24.5px;}
  body{background:var(--night-deep); color:var(--ivory); font-family:var(--serif); line-height:1.6; overflow-x:hidden;}
  ::selection{background:var(--gold); color:var(--night-deep);}
  svg.star-icon{display:block;}

  nav{
    position:fixed; top:0; left:0; right:0; z-index:50;
    padding:20px 4vw;
    font-family:var(--sans); letter-spacing:0.03em; font-size:11px; text-transform:uppercase;
    background:linear-gradient(to bottom, rgba(var(--night-deep-rgb),0.94), transparent);
    backdrop-filter:blur(2px);
  }
  .nav-inner{
    display:flex; align-items:center; justify-content:flex-start; gap:12px;
    max-width:1360px; margin:0 auto;
  }
  nav .brand{display:flex; align-items:center; gap:9px; font-family:var(--serif); font-size:16px; letter-spacing:0.04em; color:var(--gold-bright); flex-shrink:1; min-width:0; overflow:hidden; text-decoration:none; transition:opacity .2s;}
  nav .brand:hover{opacity:0.8;}
  nav .brand span{white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
  nav ul{list-style:none; display:flex; gap:11px; flex-wrap:wrap; margin-left:30px; margin-right:30px;}
  nav a{color:var(--ivory); text-decoration:none; opacity:0.75; transition:opacity .25s, color .25s;}
  nav a:hover{opacity:1; color:var(--gold-bright);}
  nav a.active{opacity:1; color:var(--gold-bright);}
  nav ul{display:none;}
  @media(min-width:1080px){ nav ul{display:flex;} }

  nav li.has-dropdown{position:relative;}
  nav li.has-dropdown > a{display:flex; align-items:center; gap:2px;}
  nav li.has-dropdown > a svg{width:8px; height:8px; opacity:0.6; transition:transform .2s; flex-shrink:0;}
  nav .nav-dropdown{
    position:absolute; top:calc(100% + 14px); left:50%; transform:translateX(-50%);
    background:var(--night-deep); border:1px solid var(--line); border-radius:10px;
    padding:8px; min-width:180px;
    opacity:0; visibility:hidden; transform:translateX(-50%) translateY(-6px);
    transition:opacity .2s ease, transform .2s ease, visibility .2s;
    z-index:60;
    box-shadow:0 8px 24px rgba(0,0,0,0.25);
  }
  nav li.has-dropdown:hover .nav-dropdown{opacity:1; visibility:visible; transform:translateX(-50%) translateY(0);}
  nav li.has-dropdown:hover > a svg{transform:rotate(180deg);}
  nav .nav-dropdown a{
    display:block; padding:8px 10px; border-radius:6px; font-size:12.5px;
    opacity:0.75; white-space:nowrap; color:var(--ivory);
  }
  nav .nav-dropdown a:hover{background:rgba(201,163,73,0.14); opacity:1;}

  /* ---------- mobile menu ---------- */
  .menu-toggle{
    display:flex; align-items:center; justify-content:center;
    width:38px; height:38px; padding:0; flex-shrink:0;
    background:none; border:1px solid var(--line); border-radius:50%;
    cursor:pointer; color:var(--gold);
    transition:border-color .25s ease, color .25s ease;
  }
  .menu-toggle:hover{border-color:var(--gold);}
  @media(max-width:1079px){ .menu-toggle{margin-left:auto;} }
  .menu-toggle svg{width:19px; height:19px; position:absolute; transition:opacity .25s ease, transform .25s ease;}
  .menu-toggle{position:relative;}
  .menu-toggle .menu-icon-close{opacity:0; transform:rotate(-45deg);}
  .menu-toggle[aria-expanded="true"] .menu-icon-open{opacity:0; transform:rotate(45deg);}
  .menu-toggle[aria-expanded="true"] .menu-icon-close{opacity:1; transform:rotate(0deg);}
  @media(min-width:1080px){ .menu-toggle{display:none;} }

  .mobile-menu{
    position:fixed; top:0; right:0; z-index:60;
    width:min(78vw, 320px); height:100vh;
    background:var(--night-deep);
    border-left:1px solid var(--line);
    padding:110px 32px 40px;
    transform:translateX(100%);
    transition:transform .35s ease;
    overflow-y:auto;
  }
  .mobile-menu.open{transform:translateX(0);}
  .mobile-menu ul{list-style:none; display:flex; flex-direction:column; gap:26px;}
  .mobile-menu a{
    color:var(--ivory); text-decoration:none;
    font-family:var(--sans); font-size:15px; letter-spacing:0.08em; text-transform:uppercase;
    opacity:0.85;
  }
  .mobile-menu a:hover{opacity:1; color:var(--gold-bright);}
  .mobile-menu a.active{opacity:1; color:var(--gold-bright);}
  .mobile-menu .sub-menu{list-style:none; display:flex; flex-direction:column; gap:16px; margin-top:14px; padding-left:16px; border-left:1px solid var(--line);}
  .mobile-menu .sub-menu a{font-size:12.5px; letter-spacing:0.05em; opacity:0.6;}
  @media(min-width:1080px){ .mobile-menu{display:none;} }

  header.hero{
    position:relative; min-height:70vh;
    display:flex; flex-direction:column; align-items:center; justify-content:center;
    text-align:center; padding:150px 6vw 60px;
    background:
      radial-gradient(ellipse at 50% -10%, rgba(201,163,73,0.14), transparent 60%),
      linear-gradient(180deg, var(--night-deep) 0%, var(--night) 55%, var(--night-deep) 100%);
  }
  @media(max-width:640px){
    header.hero{padding-top:190px;}
    .page-header{margin-top:190px;}
  }
  .eyebrow{font-family:var(--sans); font-size:12px; letter-spacing:0.35em; text-transform:uppercase; color:var(--gold); opacity:0.9; margin-bottom:26px;}
  h1.hero-title{font-size:clamp(2.3rem, 6vw, 4.6rem); font-weight:500; color:var(--ivory); max-width:17ch; line-height:1.1;}
  h1.hero-title em{font-style:italic; color:var(--gold-bright);}
  .hero-arabic{font-family:var(--arabic); font-size:clamp(1.6rem, 3.2vw, 2.4rem); color:var(--gold); margin:26px 0 10px; opacity:0.95;}
  .hero-sub{max-width:56ch; font-size:1.15rem; color:rgba(var(--ivory-rgb),0.8); margin:0 auto 20px;}
  .hero-note{margin:0 auto 20px; font-family:var(--sans); font-size:12.5px; letter-spacing:0.02em; color:rgba(var(--ivory-rgb),0.55); max-width:48ch;}
  .scroll-cue{margin:26px auto 0; display:flex; flex-direction:column; align-items:center; gap:8px; font-family:var(--sans); font-size:10.5px; letter-spacing:0.25em; text-transform:uppercase; color:rgba(var(--ivory-rgb),0.45);}
  .scroll-line{width:1px; height:38px; background:linear-gradient(var(--gold), transparent); animation:pulse 2.4s ease-in-out infinite;}
  @keyframes pulse{0%,100%{opacity:0.3;} 50%{opacity:1;}}

  section{position:relative; padding:100px 6vw; max-width:1180px; margin:0 auto;}
  .section-head{text-align:center; max-width:58ch; margin:0 auto 56px;}
  .section-head .eyebrow{margin-bottom:16px;}
  .section-head h2{font-size:clamp(2rem, 4vw, 2.9rem); font-weight:500; color:var(--ivory);}
  .section-head p{margin-top:16px; color:rgba(var(--ivory-rgb),0.72); font-size:1.05rem;}
  .subhead{text-align:center; margin:64px 0 30px; scroll-margin-top:110px;}
  .subhead:first-of-type{margin-top:0;}
  .subhead h3.sub-title{font-family:var(--sans); font-size:13px; letter-spacing:0.22em; text-transform:uppercase; color:var(--gold-bright); border-top:1px solid var(--line); display:inline-block; padding-top:14px;}
  .divider{display:flex; align-items:center; justify-content:center; gap:16px; margin:0 auto 60px; color:var(--gold);}
  .divider .rule{width:64px; height:1px; background:var(--line);}

  .category-banner{text-align:center; padding:34px 6vw; background:var(--night); border-top:1px solid var(--line); border-bottom:1px solid var(--line); font-family:var(--sans); font-size:13px; letter-spacing:0.05em; color:rgba(var(--ivory-rgb),0.68); max-width:1180px; margin:0 auto;}
  .category-banner strong{color:var(--gold-bright); font-weight:500;}

  .grid{display:grid; grid-template-columns:repeat(auto-fit, minmax(300px, 1fr)); gap:2px; background:var(--line); border:1px solid var(--line);}
  .grid-2col{grid-template-columns:repeat(2, 1fr);}
  @media(max-width:700px){ .grid-2col{grid-template-columns:1fr;} }
  .card{background:var(--night-deep); padding:38px 32px; display:flex; flex-direction:column; gap:14px; transition:background .3s ease;}
  .card:hover{background:var(--night);}
  .card .icon-wrap{width:52px; height:52px; display:flex; align-items:center; justify-content:center; border:1px solid var(--line); border-radius:50%;}
  .card .icon-wrap svg{width:26px; height:26px;}
  .card h3{font-size:1.42rem; font-weight:500; color:var(--ivory); margin-top:4px;}
  .card .verse-ref{font-family:var(--sans); font-size:10.5px; letter-spacing:0.1em; text-transform:uppercase; color:var(--gold);}
  .card .arabic-line{font-family:var(--arabic); font-size:1.2rem; color:var(--gold-bright); line-height:2; direction:rtl; opacity:0.95;}
  .card .translation-line{font-family:var(--sans); font-size:12.5px; font-style:italic; color:rgba(var(--ivory-rgb),0.55); line-height:1.6; border-left:2px solid var(--line); padding-left:12px;}
  .palindrome-diagram{width:100%; margin:6px 0 2px; background:var(--diagram-stage); border-radius:8px; padding:6px 2px; cursor:zoom-in; transition:box-shadow .25s ease;}
  .palindrome-diagram:hover{box-shadow:0 0 0 1px var(--gold);}
  .palindrome-diagram text{font-family:var(--arabic);}

  .diagram-lightbox{
    position:fixed; inset:0; z-index:200;
    background:rgba(2,6,14,0.88);
    display:flex; align-items:center; justify-content:center;
    padding:5vh 5vw;
    opacity:0; visibility:hidden;
    transition:opacity .25s ease, visibility .25s;
  }
  .diagram-lightbox.open{opacity:1; visibility:visible;}
  .diagram-lightbox .lightbox-inner{
    max-width:900px; width:100%;
    background:var(--diagram-stage);
    border:1px solid var(--gold);
    border-radius:12px;
    padding:28px 24px;
    cursor:zoom-out;
    position:relative;
  }
  .diagram-lightbox .lightbox-inner .diagram-wrap svg{width:100%; height:auto; display:block; cursor:zoom-out !important;}
  .diagram-lightbox .lightbox-close{
    position:absolute; top:-16px; right:-16px;
    width:36px; height:36px; border-radius:50%;
    background:var(--gold); color:var(--night-deep);
    border:none; cursor:pointer;
    display:flex; align-items:center; justify-content:center;
    box-shadow:0 4px 12px rgba(0,0,0,0.4);
    z-index:2;
  }
  .diagram-lightbox .lightbox-close svg{width:16px; height:16px; display:block; flex-shrink:0;}
  .diagram-lightbox .lightbox-hint{
    position:absolute; bottom:-30px; left:0; right:0; text-align:center;
    font-family:var(--sans); font-size:10.5px; letter-spacing:0.08em; text-transform:uppercase;
    color:rgba(246,239,221,0.4);
  }
  .card p.body-text{color:rgba(var(--ivory-rgb),0.78); font-size:0.96rem;}
  .card .claim-tag{align-self:flex-start; font-family:var(--sans); font-size:10px; letter-spacing:0.06em; text-transform:uppercase; padding:5px 12px; border-radius:999px; border:1px solid var(--teal); color:var(--teal-tag); margin-top:2px;}
  .card.narrative .claim-tag{border-color:var(--rose); color:var(--rose-tag);}
  .card.linguistic .claim-tag{border-color:var(--violet); color:var(--violet-tag);}
  .card.historic .claim-tag{border-color:var(--amber); color:var(--amber-tag);}
  .card.math .claim-tag{border-color:var(--blue-cat); color:var(--blue-tag);}
  .card.nursi .claim-tag{border-color:var(--sage); color:var(--sage-tag);}

  details.deepdive{margin-top:6px; border-top:1px solid var(--line); padding-top:12px;}
  details.deepdive summary{
    cursor:pointer; list-style:none; font-family:var(--sans); font-size:11px; letter-spacing:0.1em; text-transform:uppercase;
    color:var(--gold-bright); display:flex; align-items:center; gap:8px; user-select:none;
  }
  details.deepdive summary::-webkit-details-marker{display:none;}
  details.deepdive summary::before{content:"+"; font-size:15px; color:var(--gold); transition:transform .25s ease;}
  details.deepdive[open] summary::before{content:"–";}
  details.deepdive .deepdive-body{padding-top:14px; color:rgba(var(--ivory-rgb),0.75); font-size:0.94rem; line-height:1.75;}

  footer{padding:60px 6vw 50px; text-align:center; font-family:var(--sans); font-size:12px; letter-spacing:0.03em; color:rgba(var(--ivory-rgb),0.45);}
  footer .rosette-mark{margin-bottom:22px; opacity:0.5;}
  footer p{max-width:62ch; margin:0 auto 10px;}
  footer .fine{margin-top:22px; font-size:11px; opacity:0.7;}

  .reveal{opacity:0; transform:translateY(22px); transition:opacity .8s ease, transform .8s ease;}
  .reveal.in{opacity:1; transform:translateY(0);}

  .i18n-da{display:none;}
  .i18n-tr{display:none;}
  .lang-da .i18n-da{display:inline;}
  .lang-da .i18n-en{display:none;}
  .lang-tr .i18n-tr{display:inline;}
  .lang-tr .i18n-en{display:none;}
  .lang-switch{display:flex; align-items:center; gap:2px; border:1px solid var(--line); border-radius:999px; padding:3px; flex-shrink:0;}
  .lang-switch button{all:unset; cursor:pointer; font-family:var(--sans); font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color:rgba(var(--ivory-rgb),0.6); padding:6px 13px; border-radius:999px; transition:background .25s ease, color .25s ease;}
  .lang-switch button.active{background:var(--gold); color:var(--night-deep);}
  .lang-switch button:hover:not(.active){color:var(--gold-bright);}

  .lang-select{
    display:none; flex-shrink:0;
    appearance:none; -webkit-appearance:none; -moz-appearance:none;
    background:none; border:1px solid var(--line); border-radius:999px;
    color:var(--gold-bright); font-family:var(--sans); font-size:11px; text-transform:uppercase;
    text-align:center; text-align-last:center; text-indent:1px;
    padding:7px 16px 7px 6px; cursor:pointer; width:auto;
    background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e8c873' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>");
    background-repeat:no-repeat;
    background-position:right 3px center;
    background-size:10px 10px;
  }
  .lang-select option{background:var(--night-deep); color:var(--ivory);}
  @media(max-width:1079px){
    .lang-switch{display:none;}
    .lang-select{display:block;}
  }

  .theme-toggle{
    display:flex; align-items:center; justify-content:center;
    width:30px; height:30px; border:1px solid var(--line); border-radius:50%;
    background:none; cursor:pointer; color:var(--gold); flex-shrink:0;
    transition:border-color .25s ease, color .25s ease;
  }
  .theme-toggle:hover{border-color:var(--gold);}
  .theme-toggle svg{width:16px; height:16px;}
  .theme-toggle .icon-sun{display:none;}
  body.light-mode .theme-toggle .icon-moon{display:none;}
  body.light-mode .theme-toggle .icon-sun{display:block;}

  .text-size-toggle{position:relative; font-family:var(--serif);}
  .text-size-toggle .text-size-label{font-size:14px; line-height:1; font-weight:600; margin-top:-4px;}
  .text-size-toggle .text-size-dots{
    position:absolute; bottom:3px; left:50%; transform:translateX(-50%);
    display:flex; gap:2px;
  }
  .text-size-toggle .text-size-dots span{
    width:3px; height:3px; border-radius:50%; background:var(--gold);
    opacity:0.25; transition:opacity .2s;
  }
  html.text-lg .text-size-toggle .text-size-dots span:nth-child(-n+1){opacity:1;}
  html.text-xl .text-size-toggle .text-size-dots span:nth-child(-n+2){opacity:1;}
  html.text-xxl .text-size-toggle .text-size-dots span{opacity:1;}

  @media(max-width:1079px){
    #langSelect, #themeToggle, #textSizeToggle, #searchToggle, #indexToggle{
      position:fixed; right:16px; z-index:55;
      background:var(--night-deep);
      box-shadow:0 4px 14px rgba(var(--night-deep-rgb),0.35);
    }
    #langSelect{top:74px; min-width:30px; height:30px; border-radius:15px; padding:0 14px 0 6px; font-size:10px; background-position:right 3px center; background-size:9px 9px;}
    #themeToggle{top:118px;}
    #textSizeToggle{top:162px;}
    #searchToggle{top:206px;}
    #indexToggle{top:250px;}
  }

  .index-lightbox{
    position:fixed; inset:0; z-index:210;
    background:rgba(2,6,14,0.88);
    display:flex; align-items:flex-start; justify-content:center;
    padding:8vh 5vw 5vh;
    opacity:0; visibility:hidden;
    transition:opacity .25s ease, visibility .25s;
  }
  .index-lightbox.open{opacity:1; visibility:visible;}
  .index-lightbox .index-inner{
    max-width:640px; width:100%; max-height:84vh;
    background:var(--diagram-stage);
    border:1px solid var(--gold);
    border-radius:12px;
    padding:26px 22px 22px;
    position:relative;
    display:flex; flex-direction:column;
  }
  .index-lightbox .index-inner-wide{max-width:820px;}
  .index-lightbox .index-close{
    position:absolute; top:-16px; right:-16px;
    width:36px; height:36px; border-radius:50%;
    background:var(--gold); color:#071322;
    border:none; cursor:pointer;
    display:flex; align-items:center; justify-content:center;
    box-shadow:0 4px 12px rgba(0,0,0,0.4);
    z-index:2;
  }
  .index-lightbox .index-close svg{width:16px; height:16px; display:block;}
  .index-lightbox h4{
    font-family:var(--serif); color:#e8c873; font-size:1.3rem;
    margin-bottom:6px; flex-shrink:0;
  }
  .index-lightbox .index-hint{
    font-family:var(--sans); font-size:11px; color:rgba(246,239,221,0.45);
    margin-bottom:16px; flex-shrink:0;
  }
  .index-search{
    width:100%; background:rgba(246,239,221,0.06); border:1px solid rgba(201,163,73,0.3);
    border-radius:8px; padding:9px 12px; margin-bottom:14px; flex-shrink:0;
    font-family:var(--sans); font-size:13px; color:#f6efdd;
  }
  .index-search::placeholder{color:rgba(246,239,221,0.35);}
  .index-list{overflow-y:auto; flex:1; min-height:0;}
  .index-section-label{
    font-family:var(--sans); font-size:10.5px; letter-spacing:0.12em; text-transform:uppercase;
    color:#c9a349; margin:16px 0 6px; opacity:0.85;
  }
  .index-section-label:first-child{margin-top:0;}
  .index-item{
    display:block; width:100%; text-align:left; background:none; border:none;
    color:rgba(246,239,221,0.8); font-family:var(--serif); font-size:14.5px;
    padding:7px 8px; border-radius:6px; cursor:pointer;
    transition:background .15s ease, color .15s ease;
  }
  .index-item:hover{background:rgba(201,163,73,0.14); color:#e8c873;}
  .index-item.hidden{display:none;}

  .index-filter{
    display:flex; flex-wrap:wrap; gap:6px; margin-bottom:14px; flex-shrink:0;
  }
  .index-filter-item{
    display:flex; align-items:center; gap:6px;
    background:none; border:1px solid rgba(201,163,73,0.3); cursor:pointer;
    font-family:var(--sans); font-size:11.5px; letter-spacing:0.03em; color:rgba(246,239,221,0.7);
    padding:6px 12px; border-radius:999px;
    transition:background .15s ease, color .15s ease, border-color .15s ease;
  }
  .index-filter-item:hover{border-color:var(--gold); color:#e8c873;}
  .index-filter-item.active{background:var(--gold); border-color:var(--gold); color:var(--night-deep);}
  .index-filter-item .index-filter-count{font-size:10px; opacity:0.75;}

  .scroll-top{
    position:fixed; right:20px; bottom:24px; z-index:60;
    width:42px; height:42px; border-radius:50%;
    background:var(--gold); color:var(--night-deep);
    display:flex; align-items:center; justify-content:center;
    border:none; cursor:pointer;
    box-shadow:0 6px 18px rgba(var(--night-deep-rgb),0.35);
    opacity:0; visibility:hidden; transform:translateY(10px);
    transition:opacity .3s ease, transform .3s ease, visibility .3s;
  }
  .scroll-top.visible{opacity:1; visibility:visible; transform:translateY(0);}
  .scroll-top:hover{background:var(--gold-bright);}
  .scroll-top svg{width:18px; height:18px;}

  @media(max-width:600px){
    section{padding:64px 6vw;}
    .card{padding:30px 22px;}
  }

  .page-header{text-align:center; max-width:70ch; margin:150px auto 50px; padding:0 6vw;}
  .page-header h1{font-family:var(--serif); font-size:clamp(2.2rem, 5vw, 3.2rem); color:var(--ivory); font-weight:500;}
  .page-header p{font-size:1.05rem; color:rgba(var(--ivory-rgb),0.72); margin-top:16px;}

  /* Qur'an Reading course styles */
  .step-nav{
    display:flex; flex-wrap:wrap; gap:8px; justify-content:center; max-width:900px; margin:20px auto 50px; padding:10px 6vw;
    position:sticky; top:66px; z-index:40;
    background:rgba(var(--night-deep-rgb),0.92); backdrop-filter:blur(4px);
    border-radius:12px;
  }
  .step-nav a{
    font-family:var(--sans); font-size:11px; letter-spacing:0.04em;
    color:rgba(var(--ivory-rgb),0.65); text-decoration:none;
    border:1px solid var(--line); border-radius:999px; padding:6px 12px;
    transition:background .2s ease, color .2s ease;
  }
  .step-nav a:hover{background:rgba(201,163,73,0.12); color:var(--gold-bright);}

  .letter-grid{
    display:grid; grid-template-columns:repeat(auto-fill, minmax(110px, 1fr));
    gap:12px; max-width:1180px; margin:0 auto;
  }
  .letter-card{
    background:var(--diagram-stage); border:1px solid var(--line); border-radius:10px;
    padding:16px 10px; text-align:center; cursor:pointer;
    transition:border-color .2s ease, transform .2s ease;
  }
  .letter-card.speaking{border-color:var(--gold); background:rgba(201,163,73,0.12);}
  .letter-card:hover{border-color:var(--gold); transform:translateY(-2px);}
  .letter-glyph{font-family:var(--arabic); font-size:2.4rem; color:var(--gold-bright); line-height:1.3;}
  .letter-name{font-family:var(--sans); font-size:11px; letter-spacing:0.05em; text-transform:uppercase; color:var(--ivory); margin-top:6px;}
  .letter-sound{font-family:var(--serif); font-size:12px; color:rgba(var(--ivory-rgb),0.6); margin-top:4px; line-height:1.4;}

  .form-demo{
    display:flex; flex-wrap:wrap; gap:20px; justify-content:center; max-width:1000px; margin:0 auto;
  }
  .form-demo-item{
    background:var(--diagram-stage); border:1px solid var(--line); border-radius:10px;
    padding:18px 22px; text-align:center; min-width:160px;
  }
  .form-demo-item .form-word{font-family:var(--arabic); font-size:1.8rem; color:var(--gold-bright); direction:rtl;}
  .form-demo-item .form-label{font-family:var(--sans); font-size:10.5px; letter-spacing:0.05em; text-transform:uppercase; color:rgba(var(--ivory-rgb),0.5); margin-top:8px;}

  .haraka-row{display:flex; flex-wrap:wrap; gap:16px; justify-content:center; max-width:900px; margin:0 auto;}
  .haraka-card{
    background:var(--diagram-stage); border-radius:10px; padding:20px; text-align:center; min-width:150px;
    border-left:4px solid var(--gold);
  }
  .haraka-card.fatha{border-left-color:#e0a860;}
  .haraka-card.kasra{border-left-color:#7ea3c9;}
  .haraka-card.damma{border-left-color:#8fd6c9;}
  .haraka-card .haraka-glyph{font-family:var(--arabic); font-size:2.2rem; color:var(--gold-bright);}
  .haraka-card .haraka-name{font-family:var(--sans); font-size:12px; text-transform:uppercase; letter-spacing:0.05em; color:var(--ivory); margin-top:8px;}
  .haraka-card .haraka-sound{font-family:var(--serif); font-size:12.5px; color:rgba(var(--ivory-rgb),0.6); margin-top:4px;}

  .fusion-grid{
    display:grid; grid-template-columns:repeat(auto-fill, minmax(130px, 1fr));
    gap:10px; max-width:1180px; margin:0 auto;
  }
  .fusion-card{
    background:var(--diagram-stage); border:1px solid var(--line); border-radius:10px;
    padding:14px 8px; text-align:center; cursor:pointer; user-select:none;
    transition:border-color .2s ease;
  }
  .fusion-card:hover{border-color:var(--gold);}
  .fusion-card.speaking{border-color:var(--gold); background:rgba(201,163,73,0.12);}
  .fusion-card .fusion-glyph{font-family:var(--arabic); font-size:1.8rem; color:var(--gold-bright);}
  .fusion-card .fusion-answer{
    font-family:var(--sans); font-size:11px; color:rgba(var(--ivory-rgb),0.5);
    margin-top:6px; opacity:0; max-height:0; overflow:hidden; transition:opacity .2s ease;
  }
  .fusion-card.revealed .fusion-answer{opacity:1; max-height:30px; margin-top:6px;}
  .fusion-hint{text-align:center; font-family:var(--sans); font-size:11px; color:rgba(var(--ivory-rgb),0.45); margin:-10px auto 24px; max-width:60ch;}

  .reading-passage{
    max-width:640px; margin:0 auto; background:var(--diagram-stage); border:1px solid var(--gold);
    border-radius:12px; padding:32px 28px; text-align:center;
  }
  .reading-passage .passage-line{font-family:var(--arabic); font-size:2rem; color:var(--gold-bright); direction:rtl; line-height:2.4; margin-bottom:6px;}
  .reading-passage .passage-translit{font-family:var(--sans); font-size:13px; color:rgba(var(--ivory-rgb),0.55); margin-bottom:18px;}