/* =========================================================
   MyDIIMS Tutorial — modern clean theme
   ========================================================= */
:root{
  --brand:#0a6ed1; --brand-2:#00b4d8; --brand-deep:#063a78;
  --green:#1f9d55; --green-2:#28a745;
  --bg:#f4f7fb; --surface:#ffffff; --surface-2:#f7fafd;
  --ink:#16202e; --ink-soft:#54627a; --muted:#8493a8;
  --line:#e4ebf3; --line-strong:#d3deea;
  --shadow:0 1px 2px rgba(16,42,76,.06),0 8px 24px -12px rgba(16,42,76,.18);
  --shadow-lg:0 24px 60px -20px rgba(10,40,90,.35);
  --radius:16px; --radius-sm:10px;
  --sidebar:288px;
  --code-bg:#eef4fb; --code-ink:#0a4f9e;
}
[data-theme="dark"]{
  --bg:#0b1220; --surface:#121b2c; --surface-2:#0f1827;
  --ink:#e8eef7; --ink-soft:#a7b5cc; --muted:#73849e;
  --line:#1f2b3f; --line-strong:#2a3b56;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -16px rgba(0,0,0,.7);
  --shadow-lg:0 30px 70px -24px rgba(0,0,0,.8);
  --code-bg:#15243b; --code-ink:#7cc2ff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:28px}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Plus Jakarta Sans",system-ui,Segoe UI,Roboto,sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased;
  transition:background .3s,color .3s;
}
a{color:inherit;text-decoration:none}
svg{width:1em;height:1em;display:block}

/* progress bar */
#progressbar{position:fixed;top:0;left:0;height:3px;width:0;z-index:60;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .12s ease-out}

/* ===== Sidebar ===== */
#sidebar{
  position:fixed;inset:0 auto 0 0;width:var(--sidebar);
  background:var(--surface);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:22px 18px;z-index:50;
  transition:transform .28s ease;
}
.brand{padding:6px 4px 18px}
.brand-logo{display:block;height:42px;width:auto;max-width:100%;
  background:#fff;border-radius:10px;padding:7px 11px}
[data-theme="dark"] .brand-logo{box-shadow:0 0 0 1px rgba(255,255,255,.12)}
.brand-sub{font-size:.78rem;color:var(--muted);font-weight:600;letter-spacing:.12em;
  text-transform:uppercase;margin-top:9px;padding-left:3px}

.searchbox{position:relative;margin-bottom:18px}
.searchbox svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);
  color:var(--muted);font-size:1rem}
.searchbox input{
  width:100%;padding:11px 12px 11px 38px;border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);background:var(--surface-2);color:var(--ink);
  font:inherit;font-size:.9rem;outline:none;transition:border .2s,box-shadow .2s}
.searchbox input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(10,110,209,.15)}

#nav{display:flex;flex-direction:column;gap:4px;overflow-y:auto;flex:1;margin:0 -6px;padding:0 6px}
.nav-link{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:12px;
  color:var(--ink-soft);font-weight:600;font-size:.92rem;position:relative;transition:.18s}
.nav-link .nav-ico{font-size:1.05rem;color:var(--muted);transition:.18s;flex:0 0 auto}
.nav-link .nav-txt{flex:1;line-height:1.25}
.nav-link .nav-no{font-size:.72rem;color:var(--muted);font-weight:700;opacity:.6}
.nav-link:hover{background:var(--surface-2);color:var(--ink)}
.nav-link:hover .nav-ico{color:var(--brand)}
.nav-link.active{background:linear-gradient(90deg,rgba(10,110,209,.12),rgba(0,180,216,.06));color:var(--brand)}
.nav-link.active .nav-ico{color:var(--brand)}
.nav-link.active::before{content:"";position:absolute;left:-6px;top:9px;bottom:9px;width:3px;
  border-radius:3px;background:linear-gradient(var(--brand),var(--brand-2))}

.side-foot{padding-top:16px}
.progress-card{background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:14px}
.pc-top{display:flex;justify-content:space-between;font-size:.8rem;font-weight:700;color:var(--ink-soft);margin-bottom:9px}
#pc-count{color:var(--brand)}
.pc-track{height:7px;border-radius:6px;background:var(--line-strong);overflow:hidden}
.pc-fill{height:100%;width:0;border-radius:6px;background:linear-gradient(90deg,var(--green),var(--green-2));transition:width .35s}
.pc-reset{margin-top:10px;width:100%;border:1px solid var(--line-strong);background:transparent;color:var(--ink-soft);
  font:inherit;font-size:.78rem;font-weight:600;padding:7px;border-radius:9px;cursor:pointer;transition:.18s}
.pc-reset:hover{color:var(--brand);border-color:var(--brand)}

/* download PDF button */
.pdf-btn{display:flex;align-items:center;justify-content:center;gap:9px;margin-top:12px;
  padding:11px;border-radius:11px;text-decoration:none;font-weight:700;font-size:.86rem;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  box-shadow:0 8px 20px -8px rgba(10,110,209,.6);transition:.18s}
.pdf-btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px -8px rgba(10,110,209,.7)}
.pdf-btn svg{font-size:1.05rem}

/* segmented theme switch */
.theme-seg{position:relative;display:grid;grid-template-columns:1fr 1fr;margin-top:12px;
  background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:4px}
.seg-glider{position:absolute;top:4px;bottom:4px;left:4px;width:calc(50% - 4px);border-radius:9px;
  background:var(--surface);box-shadow:var(--shadow);transition:transform .28s cubic-bezier(.4,0,.2,1)}
[data-theme="dark"] .seg-glider{transform:translateX(100%)}
.seg-btn{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;gap:7px;
  border:0;background:none;font:inherit;font-size:.82rem;font-weight:700;cursor:pointer;
  padding:8px 6px;border-radius:9px;color:var(--muted);transition:color .2s}
.seg-btn .seg-ico{font-size:.98rem;display:grid;place-items:center}
.seg-btn:hover{color:var(--ink-soft)}
.seg-btn.active{color:var(--brand)}

/* ===== Topbar (mobile) ===== */
#topbar{display:none;position:fixed;top:0;left:0;right:0;height:58px;z-index:45;
  background:var(--surface);border-bottom:1px solid var(--line);align-items:center;gap:12px;padding:0 14px}
#topbar .tb-logo{height:30px;width:auto;background:#fff;border-radius:7px;padding:4px 8px}
[data-theme="dark"] #topbar .tb-logo{box-shadow:0 0 0 1px rgba(255,255,255,.12)}
#topbar .tb-title{font-weight:700;flex:1;color:var(--muted);font-size:.95rem;letter-spacing:.02em}
#hamburger,.theme-btn{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;
  color:var(--ink);width:40px;height:40px;display:grid;place-items:center;cursor:pointer;font-size:1.1rem;transition:.18s}
#hamburger:hover,.theme-btn:hover{border-color:var(--brand);color:var(--brand)}
#scrim{display:none;position:fixed;inset:0;background:rgba(8,18,34,.5);z-index:48;backdrop-filter:blur(2px)}

/* ===== Main ===== */
#main{margin-left:var(--sidebar);padding:34px clamp(20px,5vw,64px) 80px;max-width:1080px}

/* theme toggle */
.theme-btn.big{width:50px;height:50px;border-radius:14px;font-size:1.25rem;flex:0 0 auto;position:relative;overflow:hidden}
.theme-btn.big svg{position:absolute;transition:transform .4s,opacity .3s}
.theme-btn.big .ic-moon{transform:translateY(140%)}
[data-theme="dark"] .theme-btn.big .ic-sun{transform:translateY(-140%);opacity:0}
[data-theme="dark"] .theme-btn.big .ic-moon{transform:translateY(0)}

/* hero */
.hero{display:flex;align-items:flex-start;gap:20px;
  background:linear-gradient(135deg,var(--brand-deep),var(--brand) 55%,var(--brand-2));
  color:#fff;border-radius:24px;padding:38px clamp(24px,4vw,44px);margin-bottom:40px;
  position:relative;overflow:hidden;box-shadow:var(--shadow-lg)}
.hero::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%)}
.hero-text{flex:1;position:relative;z-index:1}
.eyebrow{font-size:.74rem;font-weight:700;letter-spacing:.16em;opacity:.85}
.hero h1{margin:.4rem 0 .5rem;font-size:clamp(1.7rem,3.6vw,2.5rem);font-weight:800;letter-spacing:-1px;line-height:1.1}
.hero p{margin:0;font-size:1.02rem;opacity:.92;max-width:48ch}
.hero-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.pill{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.25);
  padding:5px 13px;border-radius:999px;font-size:.8rem;font-weight:600;backdrop-filter:blur(4px)}
.hero .theme-btn.big{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.3);color:#fff}

/* block */
.block{margin-bottom:54px;scroll-margin-top:24px}
.block-head{display:flex;gap:18px;align-items:flex-start;margin-bottom:22px}
.block-no{font-size:2.1rem;font-weight:800;line-height:1;color:transparent;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;
  flex:0 0 auto;opacity:.9}
.block-head h2{margin:0;font-size:1.5rem;font-weight:800;letter-spacing:-.4px;display:flex;align-items:center;gap:10px}
.bh-ico{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;font-size:1.05rem;
  background:linear-gradient(135deg,rgba(10,110,209,.14),rgba(0,180,216,.1));color:var(--brand)}
.lead{margin:.45rem 0 0;color:var(--ink-soft);font-size:1rem;max-width:62ch}

/* callout */
.callout{display:flex;gap:12px;align-items:flex-start;background:var(--surface);
  border:1px solid var(--line);border-left:4px solid var(--brand-2);border-radius:12px;
  padding:14px 16px;margin-bottom:22px;box-shadow:var(--shadow);font-size:.95rem}
.co-tag{flex:0 0 auto;font-size:.66rem;font-weight:800;letter-spacing:.1em;background:var(--brand-2);
  color:#fff;padding:4px 8px;border-radius:6px;margin-top:2px}

/* step card */
.step{position:relative;display:grid;grid-template-columns:auto 1fr;gap:16px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 22px 20px;margin-bottom:16px;box-shadow:var(--shadow);transition:border .2s,transform .2s}
.step:hover{border-color:var(--line-strong)}
.step.is-done{border-color:rgba(31,157,85,.45)}
.step.is-done .step-num{background:var(--green);color:#fff}
.step-num{flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-weight:800;background:var(--surface-2);color:var(--brand);border:1px solid var(--line-strong);transition:.2s}
.step-body{min-width:0}
.step-body h3{margin:.1rem 0 .5rem;font-size:1.12rem;font-weight:700}
.step-body p{margin:.5rem 0;color:var(--ink-soft)}
.step-body strong{color:var(--ink);font-weight:700}
.step-body em{color:var(--brand);font-style:normal;font-weight:600}

/* done checkbox */
.step-check{position:absolute;top:16px;right:16px;cursor:pointer}
.step-check input{position:absolute;opacity:0;pointer-events:none}
.step-check .box{width:26px;height:26px;border-radius:8px;border:2px solid var(--line-strong);
  display:grid;place-items:center;color:transparent;transition:.18s;background:var(--surface-2)}
.step-check .box svg{font-size:.95rem;stroke-width:3}
.step-check:hover .box{border-color:var(--green)}
.step-check input:checked + .box{background:var(--green);border-color:var(--green);color:#fff}

/* reminder box (amber) */
.reminder{display:flex;gap:13px;margin-top:16px;padding:15px 16px;border-radius:12px;
  background:linear-gradient(135deg,rgba(255,180,0,.13),rgba(255,140,0,.08));
  border:1px solid rgba(230,150,0,.35);border-left:4px solid #e69500}
[data-theme="dark"] .reminder{background:linear-gradient(135deg,rgba(255,180,0,.1),rgba(255,140,0,.05));
  border-color:rgba(255,180,0,.3);border-left-color:#ffb300}
.rm-ico{flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:1.05rem;color:#fff;background:linear-gradient(135deg,#ffa500,#e68500);
  box-shadow:0 4px 12px -3px rgba(230,140,0,.5)}
.rm-body{min-width:0}
.rm-title{display:block;font-size:1rem;color:#a35a00;margin-bottom:3px}
[data-theme="dark"] .rm-title{color:#ffc659}
.rm-body p{margin:.25rem 0 .5rem;color:var(--ink-soft)}
.rm-body strong{color:var(--ink);font-weight:700}
.reminder .path-row{margin:0}

/* path chip / breadcrumb */
.path-row{margin:.3rem 0 .2rem}
.pathchip{display:inline-flex;flex-wrap:wrap;align-items:center;gap:5px;font-family:"JetBrains Mono",monospace;
  font-size:.8rem;background:var(--code-bg);border:1px solid var(--line);border-radius:8px;padding:5px 10px}
.pathchip .seg{color:var(--code-ink);font-weight:500}
.pathchip .sep{color:var(--muted);font-weight:700}

/* choices & checklist */
.choices,.checklist{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.choice,.cl-item{display:flex;gap:12px;background:var(--surface-2);border:1px solid var(--line);
  border-radius:12px;padding:14px}
.choice-tag,.cl-mark{flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  font-weight:800;font-size:.85rem;text-transform:uppercase}
.choice-tag{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.cl-mark{background:rgba(31,157,85,.14);color:var(--green);border:1px solid rgba(31,157,85,.3)}
.choice-main,.cl-main{min-width:0;display:flex;flex-direction:column;gap:7px}
.choice-desc,.cl-desc{color:var(--ink-soft);font-size:.92rem}

/* screenshots */
.shot{margin:14px 0 2px}
.shot-frame{border:1px solid var(--line-strong);border-radius:12px;overflow:hidden;background:#1c2532;
  box-shadow:var(--shadow);cursor:zoom-in;transition:transform .2s,box-shadow .2s}
.shot-frame:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.shot-frame .dots{display:flex;gap:6px;padding:9px 12px;background:#222c3a;border-bottom:1px solid #2c3848}
.shot-frame .dots i{width:10px;height:10px;border-radius:50%;background:#4a5667}
.shot-frame .dots i:nth-child(1){background:#ff5f57}
.shot-frame .dots i:nth-child(2){background:#febc2e}
.shot-frame .dots i:nth-child(3){background:#28c840}
.shot-frame img{display:block;width:100%;background:#fff}
.shot figcaption{margin-top:9px;font-size:.85rem;color:var(--muted);line-height:1.45}
.shot figcaption strong{color:var(--ink-soft)}

/* button reference grid */
.btn-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.btn-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px;
  box-shadow:var(--shadow);transition:.2s}
.btn-card:hover{transform:translateY(-3px);border-color:var(--line-strong)}
.ui-btn{display:inline-block;padding:8px 18px;border-radius:8px;color:#fff;font-weight:700;font-size:.9rem;margin-bottom:10px}
.tone-blue{background:linear-gradient(135deg,#1276e6,#0a5bc0)}
.tone-green{background:linear-gradient(135deg,#28a745,#1f9d55)}
.btn-card p{margin:0;color:var(--ink-soft);font-size:.92rem}
.btn-card em{color:var(--brand);font-style:normal;font-weight:600}
.btn-card strong{color:var(--ink)}

/* ===== Video gallery ===== */
.videos{margin-top:26px}
.videos-title{display:flex;align-items:center;gap:10px;font-size:1.12rem;font-weight:700;margin:0 0 14px}
.vt-ico{display:grid;place-items:center;width:30px;height:30px;border-radius:9px;font-size:.85rem;
  background:linear-gradient(135deg,#ff4d4d,#d6253b);color:#fff}
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.video-card{display:flex;flex-direction:column;gap:10px;text-align:left;cursor:pointer;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px;
  box-shadow:var(--shadow);transition:.2s;font:inherit;color:inherit}
.video-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:var(--shadow-lg)}
.vc-thumb{position:relative;border-radius:10px;overflow:hidden;aspect-ratio:16/9;background:#0d1420}
.vc-thumb img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.video-card:hover .vc-thumb img{transform:scale(1.05)}
.vc-play{position:absolute;inset:0;margin:auto;width:54px;height:54px;border-radius:50%;
  display:grid;place-items:center;color:#fff;font-size:1.3rem;
  background:rgba(214,37,59,.92);box-shadow:0 6px 20px rgba(0,0,0,.4);transition:.2s}
.vc-play svg{margin-left:3px}
.video-card:hover .vc-play{transform:scale(1.12);background:#e51d33}
.vc-tag{position:absolute;top:8px;left:8px;font-size:.68rem;font-weight:700;letter-spacing:.03em;
  color:#fff;padding:4px 9px;border-radius:999px;backdrop-filter:blur(4px)}
.vc-tag.tone-blue{background:rgba(10,110,209,.92)}
.vc-tag.tone-green{background:rgba(31,157,85,.92)}
.vc-tag.tone-red{background:rgba(214,37,59,.92)}
.vc-title{font-weight:600;font-size:.92rem;padding:0 4px 4px;line-height:1.35}

/* video modal */
#vmodal{position:fixed;inset:0;z-index:85;background:rgba(6,14,26,.92);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;padding:24px}
#vmodal.open{display:flex;animation:fade .2s}
.vm-box{width:min(960px,100%);background:var(--surface);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg)}
.vm-bar{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;
  border-bottom:1px solid var(--line);font-weight:700}
#vm-close{background:none;border:none;color:var(--ink-soft);font-size:1.8rem;line-height:1;cursor:pointer}
#vm-close:hover{color:var(--brand)}
.vm-frame{position:relative;aspect-ratio:16/9;background:#000}
.vm-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}

/* footer */
.foot{margin-top:60px;padding-top:30px;border-top:1px solid var(--line);text-align:center;color:var(--muted)}
.foot-logo{display:block;height:52px;width:auto;margin:0 auto 14px;
  background:#fff;border-radius:12px;padding:12px 18px;box-shadow:var(--shadow)}
.foot p{margin:0;font-size:.88rem;line-height:1.6}

/* lightbox */
#lightbox{position:fixed;inset:0;z-index:80;background:rgba(6,14,26,.9);backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;padding:30px;cursor:zoom-out}
#lightbox.open{display:flex;animation:fade .2s}
#lightbox img{max-width:95vw;max-height:90vh;border-radius:12px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
#lb-close{position:absolute;top:20px;right:26px;background:none;border:none;color:#fff;font-size:2.4rem;
  cursor:pointer;line-height:1;opacity:.8}
#lb-close:hover{opacity:1}
@keyframes fade{from{opacity:0}to{opacity:1}}

/* search hidden state */
.step.hide,.block.hide,.btn-card.hide{display:none}
.no-results{padding:18px;text-align:center;color:var(--muted);font-weight:600;display:none}

/* ===== Responsive ===== */
@media(max-width:920px){
  #sidebar{transform:translateX(-100%);box-shadow:var(--shadow-lg)}
  #sidebar.open{transform:none}
  #main{margin-left:0;padding-top:74px}
  #topbar{display:flex}
  #sidebar.open ~ #scrim{display:block}
  .hero .theme-btn.big{display:none}
}
@media(max-width:560px){
  .step{grid-template-columns:1fr;padding:18px}
  .step-num{display:none}
  .step-check{top:14px;right:14px}
  .hero{flex-direction:column}
  .block-no{font-size:1.6rem}
}

/* =========================================================
   SLIDE DECK / PDF-STYLE VIEWER
   ========================================================= */
html,body{height:100%}
body{overflow:hidden}                       /* page itself never scrolls */

#main{height:100vh;overflow:hidden;padding:0;max-width:none}
.deck{position:relative;height:100%}

/* each slide is a full-viewport page that scrolls internally */
.slide{position:absolute;inset:0;display:none;overflow-y:auto;overflow-x:hidden;
  padding-top:40px;padding-bottom:104px;
  padding-left:max(clamp(20px,5vw,48px),calc((100% - 1060px)/2));
  padding-right:max(clamp(20px,5vw,48px),calc((100% - 1060px)/2));
  scroll-behavior:smooth}
.slide.active{display:block}
.slide.block{margin:0}

/* page-turn animations */
.slide.enter-right{animation:sld-r .42s cubic-bezier(.22,.61,.36,1)}
.slide.enter-left{animation:sld-l .42s cubic-bezier(.22,.61,.36,1)}
@keyframes sld-r{from{opacity:0;transform:translateX(48px)}to{opacity:1;transform:none}}
@keyframes sld-l{from{opacity:0;transform:translateX(-48px)}to{opacity:1;transform:none}}

/* scrollbar polish */
.slide::-webkit-scrollbar{width:10px}
.slide::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:8px;border:3px solid var(--bg)}
.slide::-webkit-scrollbar-thumb:hover{background:var(--muted)}

/* the block top margin no longer needed */
.block{margin-bottom:0}

/* ---- Cover & Closing slides ---- */
.slide.cover,.slide.closing{text-align:center}
.slide.cover.active,.slide.closing.active{display:flex;align-items:center;justify-content:center}
.cover-card,.closing-card{width:min(680px,100%);border-radius:28px;padding:clamp(32px,5vw,52px);
  position:relative;overflow:hidden;box-shadow:var(--shadow-lg)}
.cover-card{color:#fff;background:linear-gradient(135deg,var(--brand-deep),var(--brand) 55%,var(--brand-2))}
.cover-card::after{content:"";position:absolute;right:-90px;top:-90px;width:300px;height:300px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%)}
.cover-card>*{position:relative;z-index:1}
.cover-logo{height:52px;width:auto;background:#fff;border-radius:12px;padding:10px 16px;margin:0 auto 22px}
.cover-card h1{margin:.4rem 0 .6rem;font-size:clamp(1.7rem,3.8vw,2.6rem);font-weight:800;letter-spacing:-1px;line-height:1.1}
.cover-card p{margin:0 auto;font-size:1.05rem;opacity:.94;max-width:46ch}
.cover-card .hero-meta{justify-content:center}
.cover-start{margin-top:26px;display:inline-flex;align-items:center;gap:9px;font:inherit;font-weight:700;font-size:1rem;
  cursor:pointer;padding:13px 26px;border-radius:13px;border:0;background:#fff;color:var(--brand);
  box-shadow:0 10px 26px -8px rgba(0,0,0,.35);transition:.2s}
.cover-start:hover{transform:translateY(-2px);box-shadow:0 16px 34px -10px rgba(0,0,0,.45)}
.cover-start svg{font-size:1.1rem}
.cover-hint{margin-top:22px;font-size:.84rem;opacity:.8}
.cover-hint kbd{background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.35);border-radius:6px;
  padding:1px 7px;font-family:"JetBrains Mono",monospace;font-size:.8rem}

.closing-card{background:var(--surface);border:1px solid var(--line)}
.closing-check{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;margin:0 auto 18px;
  font-size:1.7rem;color:#fff;background:linear-gradient(135deg,var(--green),var(--green-2));
  box-shadow:0 12px 28px -8px rgba(31,157,85,.6)}
.closing-card h2{margin:0 0 .4rem;font-size:1.7rem;font-weight:800}
.closing-card>p{color:var(--ink-soft);margin:.3rem 0}
.closing-card .foot-logo{margin:24px auto 14px}
.closing-note{font-size:.85rem;color:var(--muted);line-height:1.6}
.closing-card .cover-start{background:var(--surface-2);color:var(--brand);border:1px solid var(--line-strong);box-shadow:none}
.closing-card .cover-start:hover{border-color:var(--brand);background:var(--surface)}

/* ---- Pager ---- */
.pager{position:fixed;bottom:0;left:var(--sidebar);right:0;height:72px;z-index:40;
  display:flex;align-items:center;gap:14px;padding:0 clamp(16px,3vw,32px);
  background:var(--surface);border-top:1px solid var(--line);box-shadow:0 -8px 24px -16px rgba(16,42,76,.25)}
.pg-btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:12px;
  border:1px solid var(--line-strong);background:var(--surface-2);color:var(--ink);font:inherit;font-weight:700;
  font-size:.9rem;cursor:pointer;transition:.18s;flex:0 0 auto}
.pg-btn svg{font-size:1.05rem}
.pg-btn:hover:not(:disabled){border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.pg-btn:disabled{opacity:.35;cursor:not-allowed}
.pg-mid{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;min-width:0}
.pg-title{font-weight:700;font-size:.9rem;color:var(--ink);max-width:100%;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pg-title b{color:var(--brand)}
.pg-dots{display:flex;gap:7px;align-items:center}
.pg-dot{width:9px;height:9px;padding:0;border:0;border-radius:50%;background:var(--line-strong);cursor:pointer;transition:.25s}
.pg-dot:hover{background:var(--muted)}
.pg-dot.active{width:26px;border-radius:5px;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
.pg-dot.done{background:var(--green)}

/* ---- live search results ---- */
#search-results{position:absolute;left:0;right:0;top:calc(100% + 6px);z-index:30;
  background:var(--surface);border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--shadow-lg);
  overflow:hidden;display:none}
#search-results.show{display:block}
.sr-item{display:block;width:100%;text-align:left;border:0;background:none;font:inherit;cursor:pointer;
  padding:10px 13px;color:var(--ink);border-bottom:1px solid var(--line)}
.sr-item:last-child{border-bottom:0}
.sr-item:hover,.sr-item.sel{background:var(--surface-2);color:var(--brand)}
.sr-item small{display:block;color:var(--muted);font-size:.78rem;font-weight:500}
.sr-empty{padding:12px 13px;color:var(--muted);font-size:.86rem}

/* brand becomes a button */
.brand{display:block;width:100%;text-align:left;border:0;background:none;cursor:pointer;font:inherit}

/* ---- Mobile ---- */
@media(max-width:920px){
  .pager{left:0}
  .slide{padding-top:74px;padding-bottom:96px}
}
@media(max-width:560px){
  .pg-btn span{display:none}
  .pg-btn{padding:11px 13px}
  .pager{height:66px;gap:10px}
}

/* search-jump flash highlight */
.flash{animation:flashring 1.6s ease}
@keyframes flashring{0%,100%{box-shadow:0 0 0 0 rgba(10,110,209,0)}
  15%,40%{box-shadow:0 0 0 3px var(--brand)}}