diff --git a/book.toml b/book.toml
index df301ab6f..0d8680b7c 100644
--- a/book.toml
+++ b/book.toml
@@ -15,12 +15,13 @@ command = "python3 ./hacktricks-preprocessor.py"
 env = "prod"
 
 [output.html]
-additional-css = ["theme/tabs.css", "theme/pagetoc.css"]
+additional-css = ["theme/tabs.css", "theme/pagetoc.css", "theme/discount.css"]
 additional-js = [
     "theme/tabs.js",
     "theme/pagetoc.js",
     "theme/ht_searcher.js",
     "theme/sponsor.js",
+    "theme/discount.js",
     "theme/motion.js",
     "theme/ai.js"
 ]
diff --git a/src/images/hacktricks-summer-discount-2026.png b/src/images/hacktricks-summer-discount-2026.png
new file mode 100644
index 000000000..61b0280b9
Binary files /dev/null and b/src/images/hacktricks-summer-discount-2026.png differ
diff --git a/theme/discount.css b/theme/discount.css
new file mode 100644
index 000000000..013c85385
--- /dev/null
+++ b/theme/discount.css
@@ -0,0 +1,299 @@
+.ht-discount-overlay,
+.ht-discount-overlay * {
+    box-sizing: border-box;
+}
+
+.ht-discount-overlay {
+    position: fixed;
+    inset: 0;
+    z-index: 100000;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    padding: 18px;
+    background: rgba(2, 6, 16, 0.66);
+    backdrop-filter: blur(8px);
+    opacity: 0;
+    visibility: hidden;
+    transition: opacity 0.2s ease, visibility 0.2s ease;
+}
+
+.ht-discount-overlay.ht-discount-overlay--visible {
+    opacity: 1;
+    visibility: visible;
+}
+
+.ht-discount-card {
+    --discount-accent: #2f7dff;
+    --discount-accent-2: #ff3b4e;
+    --discount-rx: 0deg;
+    --discount-ry: 0deg;
+    --discount-lift: 0px;
+    --discount-scale: 1;
+    --discount-img-x: 0px;
+    --discount-img-y: 0px;
+    position: relative;
+    width: min(92vw, 520px);
+    max-height: min(92vh, 760px);
+    isolation: isolate;
+    overflow: hidden;
+    border-radius: 16px;
+    padding: 12px;
+    background: transparent;
+    color: #eef4ff;
+    font-family: "Chakra Petch", "Open Sans", system-ui, sans-serif;
+    box-shadow: 0 26px 70px -28px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(120, 150, 255, 0.1);
+    transform: perspective(1000px) rotateX(var(--discount-rx)) rotateY(var(--discount-ry)) translateY(var(--discount-lift)) scale(var(--discount-scale));
+    transform-style: preserve-3d;
+    transition: transform 0.18s cubic-bezier(.2, .7, .3, 1);
+}
+
+.ht-discount-card::before {
+    content: "";
+    position: absolute;
+    inset: 1px;
+    z-index: -2;
+    border-radius: 15px;
+    background: linear-gradient(162deg, #0a1016, #0c0910);
+}
+
+.ht-discount-grid {
+    position: absolute;
+    inset: -1px;
+    z-index: -3;
+    border-radius: 17px;
+    overflow: hidden;
+    pointer-events: none;
+}
+
+.ht-discount-grid::before {
+    content: "";
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    width: 760px;
+    height: 760px;
+    margin: -380px 0 0 -380px;
+    background: conic-gradient(from 0deg, transparent 0deg, var(--discount-accent) 58deg, transparent 128deg, var(--discount-accent-2) 208deg, transparent 300deg);
+    opacity: 0.58;
+    animation: sc-spin 5s linear infinite;
+}
+
+.ht-discount-scan {
+    position: absolute;
+    inset: 1px;
+    z-index: -1;
+    border-radius: 15px;
+    overflow: hidden;
+    pointer-events: none;
+    opacity: 0.52;
+}
+
+.ht-discount-scan::before {
+    content: "";
+    position: absolute;
+    left: 0;
+    right: 0;
+    height: 120px;
+    background: linear-gradient(180deg, transparent, rgba(47, 125, 255, 0.16), transparent);
+    animation: sc-scan 3.7s linear infinite;
+}
+
+.ht-discount-corners {
+    position: absolute;
+    inset: 1px;
+    z-index: -1;
+    border-radius: 15px;
+    pointer-events: none;
+    background: repeating-linear-gradient(0deg, transparent 0 2px, rgba(0, 0, 0, 0.22) 2px 3px);
+    mix-blend-mode: overlay;
+    opacity: 0.42;
+}
+
+.ht-discount-kicker {
+    position: absolute;
+    top: 11px;
+    left: 14px;
+    z-index: 2;
+    display: inline-flex;
+    align-items: center;
+    gap: 5px;
+    max-width: calc(100% - 78px);
+    padding: 4px 7px;
+    border: 1px solid rgba(47, 125, 255, 0.38);
+    border-radius: 4px;
+    background: rgba(4, 10, 20, 0.72);
+    color: var(--discount-accent);
+    font-family: "JetBrains Mono", monospace;
+    font-size: 8px;
+    font-weight: 700;
+    letter-spacing: 0.18em;
+    line-height: 1.2;
+    text-transform: uppercase;
+    backdrop-filter: blur(8px);
+}
+
+.ht-discount-kicker::before {
+    content: "";
+    width: 5px;
+    height: 5px;
+    flex: 0 0 auto;
+    border-radius: 50%;
+    background: var(--discount-accent);
+    box-shadow: 0 0 8px var(--discount-accent);
+    animation: sc-blink 1.6s ease-in-out infinite;
+}
+
+.ht-discount-close {
+    position: absolute;
+    top: 10px;
+    right: 15px;
+    z-index: 3;
+    width: 34px;
+    height: 34px;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    border: 1px solid rgba(255, 255, 255, 0.26);
+    border-radius: 50%;
+    background: rgba(4, 10, 20, 0.7);
+    color: #eef4ff;
+    cursor: pointer;
+    font-family: "JetBrains Mono", monospace;
+    font-size: 18px;
+    line-height: 1;
+    backdrop-filter: blur(8px);
+}
+
+.ht-discount-close:hover,
+.ht-discount-close:focus-visible {
+    border-color: rgba(255, 59, 78, 0.7);
+    color: #fff;
+    outline: none;
+}
+
+.ht-discount-link {
+    position: relative;
+    display: block;
+    overflow: hidden;
+    border: 1px solid rgba(47, 125, 255, 0.28);
+    border-radius: 12px;
+    background: #08101a;
+    text-decoration: none;
+}
+
+.ht-discount-link::after {
+    content: "";
+    position: absolute;
+    inset: 0;
+    pointer-events: none;
+    background: linear-gradient(135deg, rgba(255, 255, 255, 0.18), transparent 26%, transparent 72%, rgba(47, 125, 255, 0.18));
+    mix-blend-mode: screen;
+}
+
+.ht-discount-image {
+    display: block;
+    width: 100%;
+    aspect-ratio: 1 / 1;
+    object-fit: cover;
+    transform: translate3d(var(--discount-img-x), var(--discount-img-y), 0) scale(1.025);
+    transition: transform 0.18s cubic-bezier(.2, .7, .3, 1);
+}
+
+.ht-discount-actions {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) auto;
+    gap: 10px;
+    align-items: center;
+    padding-top: 12px;
+}
+
+.ht-discount-primary,
+.ht-discount-delay {
+    min-height: 40px;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    border-radius: 9px;
+    font-family: "JetBrains Mono", monospace;
+    font-size: 12px;
+    font-weight: 700;
+    letter-spacing: 0.08em;
+    line-height: 1.2;
+    text-align: center;
+    text-transform: uppercase;
+}
+
+.ht-discount-primary {
+    border: 1px solid rgba(47, 125, 255, 0.42);
+    background: rgba(47, 125, 255, 0.1);
+    color: var(--discount-accent);
+    text-decoration: none;
+}
+
+.ht-discount-primary::after {
+    content: "->";
+    margin-left: 9px;
+    animation: sc-arrow 1.4s ease-in-out infinite;
+}
+
+.ht-discount-delay {
+    border: 1px solid rgba(255, 255, 255, 0.2);
+    background: rgba(255, 255, 255, 0.06);
+    color: rgba(238, 244, 255, 0.84);
+    cursor: pointer;
+    padding: 0 12px;
+}
+
+.ht-discount-primary:hover,
+.ht-discount-primary:focus-visible,
+.ht-discount-delay:hover,
+.ht-discount-delay:focus-visible {
+    border-color: rgba(255, 59, 78, 0.7);
+    color: #fff;
+    outline: none;
+}
+
+@media (max-width: 560px) {
+    .ht-discount-overlay {
+        padding: 10px;
+        align-items: flex-end;
+    }
+
+    .ht-discount-card {
+        width: min(100%, 430px);
+        padding: 9px;
+        border-radius: 14px;
+    }
+
+    .ht-discount-actions {
+        grid-template-columns: 1fr;
+    }
+
+    .ht-discount-kicker {
+        top: 10px;
+        left: 11px;
+        font-size: 8px;
+        letter-spacing: 0.14em;
+    }
+
+    .ht-discount-close {
+        top: 8px;
+        right: 11px;
+    }
+}
+
+@media (prefers-reduced-motion: reduce) {
+    .ht-discount-overlay,
+    .ht-discount-card,
+    .ht-discount-image {
+        transition: none;
+    }
+
+    .ht-discount-grid::before,
+    .ht-discount-scan::before,
+    .ht-discount-kicker::before,
+    .ht-discount-primary::after {
+        animation: none;
+    }
+}
diff --git a/theme/discount.js b/theme/discount.js
new file mode 100644
index 000000000..59522e3e3
--- /dev/null
+++ b/theme/discount.js
@@ -0,0 +1,206 @@
+;(function discount() {
+  var CAMPAIGN_ID = "summer-2026"
+  var DISMISS_KEY = "htDiscountDismissedUntil:" + CAMPAIGN_ID
+  var DISMISS_MS = 10 * 24 * 60 * 60 * 1000
+  var IMAGE_PATH = "images/hacktricks-summer-discount-2026.png"
+  var TARGET_URL = "https://hacktricks-training.com"
+  var TITLE = "HackTricks Training Summer Discount"
+
+  function storageGet(key) {
+    try {
+      return window.localStorage.getItem(key)
+    } catch (error) {
+      return null
+    }
+  }
+
+  function storageSet(key, value) {
+    try {
+      window.localStorage.setItem(key, value)
+    } catch (error) {}
+  }
+
+  function getParam(name) {
+    try {
+      return new URLSearchParams(window.location.search).get(name)
+    } catch (error) {
+      return null
+    }
+  }
+
+  function shouldReduceMotion() {
+    return Boolean(
+      document.documentElement.classList.contains("motion-reduced") ||
+        (window.__hacktricksMotion &&
+          window.__hacktricksMotion.shouldReduceMotion &&
+          window.__hacktricksMotion.shouldReduceMotion()) ||
+        (window.matchMedia &&
+          window.matchMedia("(prefers-reduced-motion: reduce)").matches)
+    )
+  }
+
+  function getAssetUrl(path) {
+    var root = typeof window.path_to_root === "string" ? window.path_to_root : ""
+    return new URL(root + path, document.baseURI || window.location.href).href
+  }
+
+  function isDismissed() {
+    if (getParam("discount") === "show") {
+      return false
+    }
+
+    var dismissedUntil = Number(storageGet(DISMISS_KEY))
+    return Number.isFinite(dismissedUntil) && Date.now() < dismissedUntil
+  }
+
+  function close(overlay, onKeydown) {
+    overlay.classList.remove("ht-discount-overlay--visible")
+    if (onKeydown) {
+      document.removeEventListener("keydown", onKeydown)
+    }
+    window.setTimeout(function() {
+      overlay.remove()
+    }, 220)
+  }
+
+  function dismissFor15Days(overlay, onKeydown) {
+    storageSet(DISMISS_KEY, String(Date.now() + DISMISS_MS))
+    close(overlay, onKeydown)
+  }
+
+  function initMotion(card) {
+    if (!card || shouldReduceMotion()) {
+      return
+    }
+
+    card.addEventListener("mouseenter", function() {
+      card.style.setProperty("--discount-lift", "-5px")
+      card.style.setProperty("--discount-scale", "1.01")
+    })
+
+    card.addEventListener("mouseleave", function() {
+      card.style.setProperty("--discount-rx", "0deg")
+      card.style.setProperty("--discount-ry", "0deg")
+      card.style.setProperty("--discount-lift", "0px")
+      card.style.setProperty("--discount-scale", "1")
+      card.style.setProperty("--discount-img-x", "0px")
+      card.style.setProperty("--discount-img-y", "0px")
+    })
+
+    card.addEventListener("mousemove", function(event) {
+      var rect = card.getBoundingClientRect()
+      var x = (event.clientX - rect.left) / rect.width - 0.5
+      var y = (event.clientY - rect.top) / rect.height - 0.5
+
+      card.style.setProperty("--discount-rx", (-y * 9).toFixed(2) + "deg")
+      card.style.setProperty("--discount-ry", (x * 9).toFixed(2) + "deg")
+      card.style.setProperty("--discount-img-x", (x * 10).toFixed(2) + "px")
+      card.style.setProperty("--discount-img-y", (y * 10).toFixed(2) + "px")
+    })
+  }
+
+  function createDiscount() {
+    if (isDismissed() || document.querySelector(".ht-discount-overlay")) {
+      return
+    }
+
+    var overlay = document.createElement("div")
+    overlay.className = "ht-discount-overlay"
+    overlay.setAttribute("role", "dialog")
+    overlay.setAttribute("aria-modal", "true")
+    overlay.setAttribute("aria-label", TITLE)
+
+    var card = document.createElement("div")
+    card.className = "ht-discount-card"
+
+    var grid = document.createElement("span")
+    grid.className = "ht-discount-grid"
+    grid.setAttribute("aria-hidden", "true")
+
+    var scan = document.createElement("span")
+    scan.className = "ht-discount-scan"
+    scan.setAttribute("aria-hidden", "true")
+
+    var corners = document.createElement("span")
+    corners.className = "ht-discount-corners"
+    corners.setAttribute("aria-hidden", "true")
+
+    var kicker = document.createElement("span")
+    kicker.className = "ht-discount-kicker"
+    kicker.textContent = "Summer offer"
+
+    var closeButton = document.createElement("button")
+    closeButton.className = "ht-discount-close"
+    closeButton.type = "button"
+    closeButton.setAttribute("aria-label", "Close discount offer")
+    closeButton.textContent = "x"
+
+    var imageLink = document.createElement("a")
+    imageLink.className = "ht-discount-link"
+    imageLink.href = TARGET_URL
+    imageLink.target = "_blank"
+    imageLink.rel = "noopener noreferrer"
+    imageLink.setAttribute("aria-label", TITLE)
+
+    var image = document.createElement("img")
+    image.className = "ht-discount-image"
+    image.src = getAssetUrl(IMAGE_PATH)
+    image.alt = TITLE
+    image.decoding = "async"
+
+    var actions = document.createElement("div")
+    actions.className = "ht-discount-actions"
+
+    var primary = document.createElement("a")
+    primary.className = "ht-discount-primary"
+    primary.href = TARGET_URL
+    primary.target = "_blank"
+    primary.rel = "noopener noreferrer"
+    primary.textContent = "Open offer"
+
+    var delayButton = document.createElement("button")
+    delayButton.className = "ht-discount-delay"
+    delayButton.type = "button"
+    delayButton.textContent = "Hide for 10 days"
+
+    imageLink.appendChild(image)
+    actions.append(primary, delayButton)
+    card.append(grid, scan, corners, kicker, closeButton, imageLink, actions)
+    overlay.appendChild(card)
+    document.body.appendChild(overlay)
+
+    initMotion(card)
+
+    function onKeydown(event) {
+      if (event.key === "Escape" && overlay.isConnected) {
+        close(overlay, onKeydown)
+      }
+    }
+
+    closeButton.addEventListener("click", function() {
+      close(overlay, onKeydown)
+    })
+
+    delayButton.addEventListener("click", function() {
+      dismissFor15Days(overlay, onKeydown)
+    })
+
+    overlay.addEventListener("click", function(event) {
+      if (event.target === overlay) {
+        close(overlay, onKeydown)
+      }
+    })
+
+    document.addEventListener("keydown", onKeydown)
+
+    window.setTimeout(function() {
+      overlay.classList.add("ht-discount-overlay--visible")
+    }, 80)
+  }
+
+  if (document.readyState === "loading") {
+    document.addEventListener("DOMContentLoaded", createDiscount, { once: true })
+  } else {
+    createDiscount()
+  }
+})()