(function () {
  function querySelector(selector, root) {
    return (root || document).querySelector(selector);
  }

  function querySelectorAll(selector, root) {
    return (root || document).querySelectorAll(selector);
  }

  function normalizePageIdFromPath(pathname) {
    var path = pathname || "";
    var noTrailing = path.replace(/\/+$/, "");
    var trimmed = noTrailing || "/";

    if (trimmed === "" || trimmed === "/") {
      return "index.html";
    }

    var segments = trimmed.split("/").filter(Boolean);
    var filename = segments.length ? segments[segments.length - 1] : "";

    if (!filename) {
      return "index.html";
    }

    var lower = filename.toLowerCase();
    if (lower === "index.html") {
      return "index.html";
    }

    if (lower === "index") {
      return "index.html";
    }

    if (lower.indexOf(".") === -1) {
      return lower + ".html";
    }

    return lower;
  }

  function getCurrentPage() {
    var pathname = window.location && window.location.pathname ? window.location.pathname : "";
    return normalizePageIdFromPath(pathname);
  }

  function normalizeHrefToPageId(href) {
    var trimmed = (href || "").replace(/^\s+|\s+$/g, "");
    var pathname = trimmed;
    var hasProtocol = trimmed.indexOf("://") !== -1;
    var hasScheme = hasProtocol ? trimmed.slice(0, trimmed.indexOf("://")).toLowerCase() : "";

    if (hasProtocol && hasScheme === "http") {
      return "";
    }

    if (trimmed.indexOf("https://") === 0) {
      try {
        return normalizePageIdFromPath(new URL(trimmed).pathname);
      } catch (error) {
        return "";
      }
    }

    pathname = trimmed.replace(/\/+$/, "").replace(/^\.\/+/, "").replace(/^\/+/, "");
    if (!pathname) {
      return "index.html";
    }

    return normalizePageIdFromPath("/" + pathname);
  }

  function linkNodeFromItem(item, isCurrent) {
    var link = document.createElement("a");
    link.href = item.href;
    link.textContent = item.label;

    if (isCurrent) {
      link.setAttribute("aria-current", "page");
    }

    return link;
  }

  function childLinksFromItem(item) {
    var children = Array.isArray(item.children) ? item.children : [];
    var result = [];
    var i;

    for (i = 0; i < children.length; i = i + 1) {
      if (children[i] && typeof children[i].href === "string" && typeof children[i].label === "string" && isSafeHref(children[i].href)) {
        result.push(children[i]);
      }
    }

    return result;
  }

  function isSafeHref(href) {
    var trimmed = (href || "").replace(/^\s+|\s+$/g, "");
    var lower = trimmed.toLowerCase();

    if (!trimmed) {
      return false;
    }

    if (lower.indexOf("javascript:") === 0 || lower.indexOf("vbscript:") === 0 || lower.indexOf("data:") === 0 || lower.indexOf("file:") === 0 || lower.indexOf("mailto:") === 0 || lower.indexOf("blob:") === 0 || lower.indexOf("ftp:") === 0 || lower.indexOf("//") === 0) {
      return false;
    }

    if (lower.indexOf("https://") === 0) {
      return true;
    }

    if (lower.indexOf("http://") === 0) {
      return false;
    }

    if (lower[0] === "#") {
      return false;
    }

    return /^[a-z0-9._/-]+\.html$/i.test(trimmed.replace(/^\.\/+/, "").replace(/^\/+/, ""));
  }

  function getSafeNavItems() {
    var content = window.YX_CONTENT;
    var result = [];
    var i;
    var item;
    var href;
    var label;

    if (!content || !Array.isArray(content.nav)) {
      return result;
    }

    for (i = 0; i < content.nav.length; i = i + 1) {
      item = content.nav[i];
      href = item && item.href;
      label = item && item.label;

      if (!item || typeof href !== "string" || typeof label !== "string") {
        continue;
      }

      if (!isSafeHref(href)) {
        continue;
      }

      result.push(item);
    }

    return result;
  }

  function isItemCurrent(item, currentPage) {
    var pageId = normalizeHrefToPageId(item.href);
    var children = childLinksFromItem(item);
    var i;

    if (pageId === currentPage) {
      return true;
    }

    for (i = 0; i < children.length; i = i + 1) {
      if (normalizeHrefToPageId(children[i].href) === currentPage) {
        return true;
      }
    }

    return false;
  }

  function renderNav() {
    var navRoot = querySelector("[data-nav]");
    var footerNavRoot = querySelector("[data-footer-nav]");
    var navItems = getSafeNavItems();

    if (!navItems.length || (!navRoot && !footerNavRoot)) {
      return;
    }

    var currentPage = getCurrentPage();

    function renderInto(root) {
      if (!root) {
        return;
      }

      while (root.firstChild) {
        root.removeChild(root.firstChild);
      }

      var i;
      for (i = 0; i < navItems.length; i = i + 1) {
        var item = navItems[i];
        var isCurrent = isItemCurrent(item, currentPage);
        var children = childLinksFromItem(item);

        if (children.length && root.classList.contains("site-nav")) {
          var group = document.createElement("div");
          var menu = document.createElement("div");
          var label = linkNodeFromItem(item, isCurrent);
          var j;

          group.className = "nav-group";
          menu.className = "nav-submenu";
          label.className = "nav-parent";
          label.setAttribute("aria-haspopup", "true");

          for (j = 0; j < children.length; j = j + 1) {
            menu.appendChild(linkNodeFromItem(children[j], normalizeHrefToPageId(children[j].href) === currentPage));
          }

          group.appendChild(label);
          group.appendChild(menu);
          root.appendChild(group);
        } else {
          root.appendChild(linkNodeFromItem(item, isCurrent));
        }
      }
    }

    renderInto(navRoot);
    renderInto(footerNavRoot);
  }

  /**
   * 资源根地址。
   *
   * 部署流程会把 HTML 里的资源路径改写成 CDN 绝对地址（如
   * //cdn.example.com/site/assets/styles-x.css），但不会改写 JS 字符串里的
   * 路径。页脚二维码的路径写在 content.js 里，若直接使用就会相对当前域名
   * 解析、指向不存在的地址而 404。
   *
   * 这里从任一已被改写的资源地址反推资源根，让 JS 里的相对路径也落到同一
   * 位置。本地开发时样式表是 "assets/css/styles.css"（前缀为 0），返回空串，
   * 行为与改动前一致。
   */
  function assetBase() {
    var link = document.querySelector('link[href*="assets/"]');
    if (!link) {
      return "";
    }
    var href = link.getAttribute("href") || "";
    var index = href.indexOf("assets/");
    return index > 0 ? href.slice(0, index) : "";
  }

  /**
   * 修正 <a> 上的资源链接（论文、白皮书等文档）。
   *
   * 构建与部署流程只改写 Vite 处理过的资源路径，<a href> 里的相对路径不会
   * 被改写，线上会相对当前域名解析而 404。这里在运行时统一补上资源根。
   * 已被改写为绝对地址的链接不匹配选择器，因此不会重复加前缀。
   */
  /**
   * 兜底加载 ip-chat.js（品牌 IP 咨询对话）。
   *
   * 线上出现过同目录下 content.js / site.js 正常、ip-chat.js 却 404 的情况
   * （部署时漏传单个文件），导致 IP 点击后没有问答面板。这里在页面加载完成
   * 后检测就绪标记，缺失则按资源根重新加载一次。
   */
  function ensureIpChat() {
    var float = document.querySelector("[data-ip-float]");
    if (!float) {
      return;
    }
    // 判断依据用 ip-chat.js 加载成功后必然产生的副作用（给形象加 role="button"），
    // 而不是仅在最新版里才有的标记 —— 否则线上是旧版时会重复注入第二次。
    var figure = float.querySelector(".yx-ip-figure");
    if (window.YX_IP_CHAT_READY || (figure && figure.getAttribute("role") === "button")) {
      return;
    }
    var script = document.createElement("script");
    script.src = assetBase() + "assets/js/ip-chat.js";
    script.async = false;
    document.body.appendChild(script);
  }

  function fixAssetLinks() {
    var base = assetBase();
    if (!base) {
      return;
    }
    var links = document.querySelectorAll('a[href^="assets/"], a[href^="./assets/"]');
    var i;
    for (i = 0; i < links.length; i = i + 1) {
      var href = links[i].getAttribute("href") || "";
      links[i].setAttribute("href", base + href.replace(/^\.\//, ""));
    }
  }

  function renderFooterDetails() {
    var root = querySelector("[data-footer-details]");
    var content = window.YX_CONTENT;

    if (!root || !content || !content.footer) {
      return;
    }

    var groups = [
      { title: "社媒账号", items: content.footer.social },
      { title: "销售渠道", items: content.footer.channels },
      { title: "联系我们", items: content.footer.contact }
    ];

    while (root.firstChild) {
      root.removeChild(root.firstChild);
    }

    groups.forEach(function (group) {
      // 该组没有条目时整组不渲染，避免出现只有标题的空列
      if (!group.items || !group.items.length) {
        return;
      }

      var section = document.createElement("section");
      var title = document.createElement("h3");
      var list = document.createElement("ul");

      title.textContent = group.title;
      section.className = "footer-detail-group";
      section.appendChild(title);

      (group.items || []).forEach(function (entry) {
        // 兼容两种写法：纯字符串，或 { label, href }
        var text = typeof entry === "string" ? entry : (entry && entry.label) || "";
        var href = typeof entry === "string" ? "" : (entry && entry.href) || "";
        var qr = typeof entry === "string" ? "" : (entry && entry.qr) || "";
        if (!text) {
          return;
        }

        // 公众号等没有网页地址的条目用二维码承载，悬停/聚焦时显示
        if (qr) {
          var qrItem = document.createElement("li");
          qrItem.className = "footer-detail-qr";
          var qrTrigger = document.createElement("span");
          qrTrigger.className = "footer-detail-qr-label";
          qrTrigger.textContent = text;
          qrTrigger.setAttribute("tabindex", "0");
          var qrImg = document.createElement("img");
          qrImg.src = assetBase() + qr;
          qrImg.alt = text + " 二维码";
          qrImg.loading = "lazy";
          qrItem.appendChild(qrTrigger);
          qrItem.appendChild(qrImg);
          list.appendChild(qrItem);
          return;
        }

        // 页脚只允许站外 https 与电话拨号，其余一律降级为纯文字
        var lowerHref = href.toLowerCase();
        var isExternal = lowerHref.indexOf("https://") === 0;
        var isTel = /^tel:\+?[0-9-]{3,20}$/.test(lowerHref);
        if (href && !isExternal && !isTel) {
          href = "";
        }

        var item = document.createElement("li");

        if (href) {
          var link = document.createElement("a");
          link.className = "footer-detail-link";
          link.href = href;
          link.textContent = text;
          // 站外地址在新标签打开，避免用户离开官网
          if (isExternal) {
            link.target = "_blank";
            link.rel = "noreferrer";
          }
          item.appendChild(link);
        } else {
          item.textContent = text;
        }

        list.appendChild(item);
      });

      section.appendChild(list);
      root.appendChild(section);
    });
  }

  function setupMenuToggle() {
    var toggle = querySelector("[data-menu-toggle]");
    var navRoot = querySelector("[data-nav]");

    if (!toggle || !navRoot) {
      return;
    }

    if (!navRoot.id) {
      navRoot.id = "site-nav";
    }

    toggle.setAttribute("aria-controls", navRoot.id);

    if (!toggle.hasAttribute("aria-expanded")) {
      toggle.setAttribute("aria-expanded", "false");
    }

    toggle.addEventListener("click", function () {
      var expanded = toggle.getAttribute("aria-expanded") === "true";
      var nextExpanded = !expanded;

      toggle.setAttribute("aria-expanded", String(nextExpanded));
      navRoot.classList.toggle("is-open", nextExpanded);
    });
  }

  function applyReducedMotion() {
    if (!window.matchMedia) {
      return;
    }

    var query = window.matchMedia("(prefers-reduced-motion: reduce)");
    if (query.matches) {
      document.documentElement.classList.add("reduce-motion");
    }
  }

  function fillYear() {
    var yearNodes = querySelectorAll("[data-year]");
    var year = String(new Date().getFullYear());
    var i;

    for (i = 0; i < yearNodes.length; i = i + 1) {
      yearNodes[i].textContent = year;
    }
  }

  function setupScrollReveal() {
    var targets = querySelectorAll(".section, .statement-item, .heritage-item, .product-feature, .news-row, .wide-image");
    var i;

    if (!("IntersectionObserver" in window)) {
      for (i = 0; i < targets.length; i = i + 1) {
        targets[i].classList.add("reveal");
      }
      return;
    }

    var observer = new IntersectionObserver(function (entries) {
      var j;
      for (j = 0; j < entries.length; j = j + 1) {
        if (entries[j].isIntersecting) {
          entries[j].target.classList.add("reveal");
          observer.unobserve(entries[j].target);
        }
      }
    }, { rootMargin: "0px 0px -12% 0px", threshold: 0.12 });

    for (i = 0; i < targets.length; i = i + 1) {
      observer.observe(targets[i]);
    }
  }

  function setupCertLightbox() {
    var triggers = querySelectorAll("[data-lightbox]");
    if (!triggers.length) {
      return;
    }

    var overlay = document.createElement("div");
    overlay.className = "lightbox";
    overlay.setAttribute("hidden", "");
    overlay.setAttribute("role", "dialog");
    overlay.setAttribute("aria-modal", "true");
    overlay.setAttribute("aria-label", "证书放大查看");

    var figure = document.createElement("figure");
    figure.className = "lightbox-figure";

    var img = document.createElement("img");
    img.alt = "";

    var caption = document.createElement("figcaption");
    caption.className = "lightbox-figcaption";

    var closeBtn = document.createElement("button");
    closeBtn.type = "button";
    closeBtn.className = "lightbox-close";
    closeBtn.setAttribute("aria-label", "关闭");
    closeBtn.textContent = "×";

    figure.appendChild(img);
    figure.appendChild(caption);
    overlay.appendChild(figure);
    overlay.appendChild(closeBtn);
    document.body.appendChild(overlay);

    function open(trigger) {
      // data-lightbox 是自定义属性，Vite 构建不会重写其路径；
      // 触发器内部 <img> 的 src 已被构建正确重写(含 CDN 地址)，优先取用，避免线上放大图 404
      var thumb = trigger.querySelector("img");
      img.src = (thumb && thumb.src) || trigger.getAttribute("data-lightbox") || "";
      img.alt = trigger.getAttribute("data-lightbox-title") || "";
      caption.textContent = trigger.getAttribute("data-lightbox-title") || "";
      overlay.hidden = false;
      document.body.style.overflow = "hidden";
    }

    function close() {
      overlay.hidden = true;
      document.body.style.overflow = "";
    }

    var i;
    for (i = 0; i < triggers.length; i = i + 1) {
      triggers[i].addEventListener("click", function (event) {
        open(event.currentTarget);
      });
    }

    overlay.addEventListener("click", function (event) {
      if (event.target === overlay || event.target === closeBtn) {
        close();
      }
    });

    document.addEventListener("keydown", function (event) {
      if (event.key === "Escape" && !overlay.hidden) {
        close();
      }
    });
  }

  /**
   * 品牌 IP 悬浮（天天 / 成成）
   *
   * 随页面滚动切换形象：滚到科学 / 产品相关区块时换成戴眼镜的严博士，
   * 滚到品类、品牌主张、动态等日常区块时换成温暖治愈形象。
   * 形象与文案由页面上的 [data-ip-float] 容器通过 data 属性声明。
   */
  function setupIpFloat() {
    var root = querySelector("[data-ip-float]");
    if (!root) {
      return;
    }

    var stage = querySelector(".yx-ip-stage", root);
    var figure = querySelector(".yx-ip-figure", root);
    var bubble = querySelector(".yx-ip-bubble", root);
    var closeBtn = querySelector(".yx-ip-close", root);
    var images = querySelectorAll("img[data-ip-mood]", root);
    if (!figure || !images.length) {
      return;
    }

    // 声明各区块对应的形象：data-ip-mood="science" / "daily"
    var zones = [];
    var zoneNodes = querySelectorAll("[data-ip-zone]");
    var i;
    for (i = 0; i < zoneNodes.length; i = i + 1) {
      zones.push({
        el: zoneNodes[i],
        mood: zoneNodes[i].getAttribute("data-ip-zone") || "daily",
        text: zoneNodes[i].getAttribute("data-ip-text") || ""
      });
    }

    var dismissed = false;
    var currentMood = "";
    var bubbleTimer = null;

    function setMood(mood, text) {
      if (mood === currentMood) {
        return;
      }
      currentMood = mood;

      var j;
      var matched = false;
      for (j = 0; j < images.length; j = j + 1) {
        var isTarget = images[j].getAttribute("data-ip-mood") === mood;
        if (isTarget) {
          matched = true;
        }
        images[j].classList.toggle("is-active", isTarget);
      }
      // 没有对应形象时回落到第一张，避免整块空白
      if (!matched) {
        images[0].classList.add("is-active");
      }

      if (!bubble) {
        return;
      }
      if (text) {
        bubble.textContent = text;
        bubble.classList.add("is-shown");
        if (bubbleTimer) {
          window.clearTimeout(bubbleTimer);
        }
        bubbleTimer = window.setTimeout(function () {
          bubble.classList.remove("is-shown");
        }, 4200);
      } else {
        bubble.classList.remove("is-shown");
      }
    }

    function currentZone() {
      // 取视口中线所处的区块，滚动到哪个区块就用哪个形象
      var mid = window.innerHeight / 2;
      var found = null;
      var j;
      for (j = 0; j < zones.length; j = j + 1) {
        var rect = zones[j].el.getBoundingClientRect();
        if (rect.top <= mid && rect.bottom >= mid) {
          found = zones[j];
        }
      }
      return found;
    }

    function update() {
      if (dismissed) {
        return;
      }

      // 首屏不打扰，往下滚一点再出现
      var scrolled = window.pageYOffset || document.documentElement.scrollTop || 0;
      var show = scrolled > window.innerHeight * 0.45;
      root.classList.toggle("is-visible", show);

      var zone = currentZone();
      if (zone) {
        setMood(zone.mood, zone.text);
      }
    }

    var ticking = false;
    function onScroll() {
      if (ticking) {
        return;
      }
      ticking = true;
      window.requestAnimationFrame(function () {
        update();
        ticking = false;
      });
    }

    if (closeBtn) {
      closeBtn.addEventListener("click", function () {
        dismissed = true;
        root.classList.remove("is-visible");
      });
    }

    if (stage && bubble) {
      stage.addEventListener("mouseenter", function () {
        var zone = currentZone();
        if (zone && zone.text) {
          bubble.textContent = zone.text;
          bubble.classList.add("is-shown");
        }
      });
      stage.addEventListener("mouseleave", function () {
        bubble.classList.remove("is-shown");
      });
    }

    window.addEventListener("scroll", onScroll, { passive: true });
    window.addEventListener("resize", onScroll);
    update();
  }


  /**
   * 品牌故事页板块切换
   *
   * 顶部标签控制 [data-story-panel] 的显示，URL hash 可直达某个板块，
   * 浏览器前进/后退也能正确切换。
   */
  function setupStoryTabs() {
    var tabsRoot = querySelector("[data-story-tabs]");
    if (!tabsRoot) {
      return;
    }

    var tabs = querySelectorAll("[data-story-tab]", tabsRoot);
    var panels = querySelectorAll("[data-story-panel]");
    if (!tabs.length || !panels.length) {
      return;
    }

    function activate(name, updateHash) {
      var matched = false;
      var i;

      for (i = 0; i < panels.length; i = i + 1) {
        var isTarget = panels[i].getAttribute("data-story-panel") === name;
        panels[i].hidden = !isTarget;
        if (isTarget) {
          matched = true;
        }
      }

      // hash 指向不存在的板块时回落到第一个，避免整页空白
      if (!matched) {
        panels[0].hidden = false;
        name = panels[0].getAttribute("data-story-panel");
      }

      for (i = 0; i < tabs.length; i = i + 1) {
        var on = tabs[i].getAttribute("data-story-tab") === name;
        tabs[i].classList.toggle("is-active", on);
        tabs[i].setAttribute("aria-selected", on ? "true" : "false");
        tabs[i].setAttribute("tabindex", on ? "0" : "-1");
      }

      if (updateHash && window.history && window.history.replaceState) {
        window.history.replaceState(null, "", "#" + name);
      }
    }

    var i;
    for (i = 0; i < tabs.length; i = i + 1) {
      tabs[i].addEventListener("click", function (event) {
        event.preventDefault();
        activate(event.currentTarget.getAttribute("data-story-tab"), true);
        tabsRoot.scrollIntoView({ block: "start" });
      });
    }

    // 左右方向键在标签间移动，符合 tablist 无障碍惯例
    tabsRoot.addEventListener("keydown", function (event) {
      if (event.key !== "ArrowRight" && event.key !== "ArrowLeft") {
        return;
      }
      var list = [];
      var j;
      for (j = 0; j < tabs.length; j = j + 1) {
        list.push(tabs[j]);
      }
      var current = list.indexOf(document.activeElement);
      if (current === -1) {
        return;
      }
      event.preventDefault();
      var step = event.key === "ArrowRight" ? 1 : -1;
      var next = list[(current + step + list.length) % list.length];
      next.focus();
      activate(next.getAttribute("data-story-tab"), true);
    });

    window.addEventListener("hashchange", function () {
      activate((window.location.hash || "").replace("#", ""), false);
    });

    activate((window.location.hash || "").replace("#", ""), false);
  }

  function init() {
    renderNav();
    renderFooterDetails();
    fixAssetLinks();

    // ip-chat.js 在 site.js 之后引入，故延到 load 再判断是否已就绪
    if (document.readyState === "complete") {
      ensureIpChat();
    } else {
      window.addEventListener("load", ensureIpChat);
    }
    setupMenuToggle();
    applyReducedMotion();
    fillYear();
    setupScrollReveal();
    setupCertLightbox();
    setupIpFloat();
    setupStoryTabs();
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", init);
  } else {
    init();
  }
})();