/* ==========================================================================
   V课程教育主题 · 核心样式
   设计语言：现代教育站点常用的白底卡片、柔和阴影、大圆角与蓝色强调色
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --theme-color:#2b6ef6;
  --theme-hover:#1a5ae0;
  --theme-color-h:221;
  --theme-color-s:90%;
  --theme-color-l:56%;
  --theme-color-hsl:var(--theme-color-h),var(--theme-color-s),var(--theme-color-l);
  --theme-black-color:hsl(var(--theme-color-hsl));
  --theme-gray-color:hsla(var(--theme-color-hsl),.8);
  --theme-light-color:hsla(var(--theme-color-hsl),.6);
  --theme-line-color:hsla(var(--theme-color-hsl),.07);
  --theme-border-color:hsla(var(--theme-color-hsl),.2);

  --vk-green:#07c160;
  --vk-green-dark:#06ad56;
  --vk-orange:#ff8a00;
  --vk-red:#f5222d;
  --vk-purple:#7b61ff;
  --vk-white:#fff;
  --vk-bg:#f6f8fc;
  --vk-bg-soft:#eef3fb;
  --vk-dark:#0f1b33;
  --vk-dark-2:#16243f;
  --vk-text:#1f2b45;
  --vk-text-2:#4a5b7c;
  --vk-text-3:#7c8ba8;

  --theme-container-width:1240px;
  --theme-gutter:24px;
  --theme-sidebar-width:300px;
  --theme-content-sidebar-gap:36px;
  --theme-post-item-gap:24px;

  --theme-border-radius-xl:16px;
  --theme-border-radius-l:10px;
  --theme-border-radius-m:8px;
  --theme-border-radius-s:5px;

  --radius-pill:999px;
  --header-height:76px;
  --header-height-mobile:60px;
  --shadow-sm:0 2px 8px rgba(15,27,51,.06);
  --shadow-md:0 8px 28px rgba(15,27,51,.08);
  --shadow-lg:0 20px 50px rgba(15,27,51,.12);
  --shadow-card:0 2px 10px hsla(var(--theme-color-hsl),.08);
  --shadow-hover:0 14px 34px hsla(var(--theme-color-hsl),.16);
  --vk-font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  --transition:.25s cubic-bezier(.4,0,.2,1);
}

/* ---------- 2. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--vk-font);
  font-size:15px;
  line-height:1.7;
  color:var(--vk-text);
  background:var(--vk-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  word-wrap:break-word;
  padding-bottom:env(safe-area-inset-bottom);
}
img{max-width:100%;height:auto;border:0;vertical-align:middle}
a{color:var(--vk-text);text-decoration:none;transition:color var(--transition),opacity var(--transition),background var(--transition),transform var(--transition)}
a:hover{color:var(--theme-color)}
h1,h2,h3,h4,h5,h6{margin:0 0 .5em;font-weight:600;line-height:1.35;color:var(--vk-text)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.4em}
input,select,textarea,button{font-family:inherit;font-size:inherit}
button{cursor:pointer}
table{border-collapse:collapse;width:100%}
code,pre{font-family:Consolas,Monaco,"Courier New",monospace;font-size:.92em}
code{background:var(--vk-bg-soft);border-radius:4px;padding:2px 6px;color:#c7254e}
pre{background:#0f1b33;color:#e6edf7;padding:16px;border-radius:var(--theme-border-radius-m);overflow:auto}
::selection{background:hsla(var(--theme-color-hsl),.2)}
:focus-visible{outline:2px solid var(--theme-color);outline-offset:2px}

.screen-reader-text{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
.skip-link:focus{
  position:fixed;top:8px;left:8px;width:auto;height:auto;clip:auto;
  background:#fff;padding:10px 16px;border-radius:8px;z-index:10000;box-shadow:var(--shadow-md);
}

/* ---------- 3. 布局 ---------- */
.container{
  width:100%;
  max-width:var(--theme-container-width);
  margin:0 auto;
  padding-left:var(--theme-gutter);
  padding-right:var(--theme-gutter);
}
.site-wrap{min-height:46vh}
.wrap{display:flex;flex-wrap:wrap;gap:var(--theme-content-sidebar-gap);padding-top:28px;padding-bottom:40px;align-items:flex-start}
.main{flex:1 1 0;min-width:0}
.main-full{flex:1 1 100%}
.sidebar{flex:0 0 var(--theme-sidebar-width);max-width:var(--theme-sidebar-width);position:sticky;top:calc(var(--header-height) + 16px)}
.section{padding:56px 0}
.section--gray{background:var(--vk-white)}
.section--dark{background:linear-gradient(135deg,#0f1b33,#16243f);color:#dfe7f5}
.section--dark .sec-title,.section--dark .sec-sub{color:#fff}
.section--dark .sec-sub{opacity:.7}
.home-content{padding:28px 0 40px}
.grid{display:grid;gap:var(--theme-post-item-gap)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- 4. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 22px;border:1px solid transparent;border-radius:var(--radius-pill);
  font-size:14px;font-weight:500;line-height:1.4;text-align:center;white-space:nowrap;
  transition:all var(--transition);cursor:pointer;text-decoration:none;
}
.btn:disabled,.btn.is-disabled{opacity:.55;cursor:not-allowed;pointer-events:none}
.btn-primary{background:var(--theme-color);color:#fff;box-shadow:0 6px 18px hsla(var(--theme-color-hsl),.28)}
.btn-primary:hover{background:var(--theme-hover);color:#fff;transform:translateY(-1px);box-shadow:0 10px 24px hsla(var(--theme-color-hsl),.34)}
.btn-wechat{background:var(--vk-green);color:#fff;box-shadow:0 6px 18px rgba(7,193,96,.26)}
.btn-wechat:hover{background:var(--vk-green-dark);color:#fff;transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:#fff;color:var(--theme-color);border-color:#fff}
.btn-outline{background:#fff;color:var(--theme-color);border-color:hsla(var(--theme-color-hsl),.35)}
.btn-outline:hover{background:var(--theme-color);color:#fff;border-color:var(--theme-color)}
.btn-light{background:#fff;color:var(--vk-text)}
.btn-light:hover{background:var(--vk-bg-soft);color:var(--theme-color)}
.btn-danger{background:var(--vk-red);color:#fff}
.btn-danger:hover{background:#d9363e;color:#fff}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-sm{padding:6px 14px;font-size:13px}
.btn-block{display:flex;width:100%}
.btn.is-loading{position:relative;color:transparent!important;pointer-events:none}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:vk-spin .7s linear infinite;
}
@keyframes vk-spin{to{transform:rotate(360deg)}}

/* ---------- 5. 页头 ---------- */
.header{
  position:sticky;top:0;z-index:900;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--theme-line-color);
  transition:box-shadow var(--transition),background var(--transition);
}
.header.is-scrolled{box-shadow:0 4px 20px rgba(15,27,51,.07)}
body.header-static .header{position:relative}
.header-wrap{
  display:flex;align-items:center;gap:24px;
  height:var(--header-height);
}
.navbar-header{display:flex;align-items:center;flex:0 0 auto}
.logo{margin:0;font-size:22px;font-weight:700;line-height:1}
.logo a{display:flex;align-items:center;gap:10px;color:var(--vk-text)}
.logo-img{max-height:44px;width:auto;display:block}
.logo-text{font-size:21px;font-weight:800;letter-spacing:-.5px;background:linear-gradient(135deg,var(--theme-color),#6b9cff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.navbar-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;padding:0 9px;margin-left:auto;
  background:none;border:0;border-radius:10px;
}
.navbar-toggle .icon-bar{display:block;height:2px;width:100%;background:var(--vk-text);border-radius:2px;transition:all var(--transition)}
.navbar-toggle[aria-expanded="true"] .icon-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.navbar-toggle[aria-expanded="true"] .icon-bar:nth-child(2){opacity:0}
.navbar-toggle[aria-expanded="true"] .icon-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.navbar-menu{flex:1 1 auto;min-width:0}
.main-menu{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.main-menu > .menu-item{position:relative}
.main-menu > .menu-item > .menu-link{
  display:flex;align-items:center;gap:4px;
  padding:8px 14px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:500;line-height:1.4;white-space:nowrap;
}
.main-menu > .menu-item > .menu-link:hover{background:hsla(var(--theme-color-hsl),.07);color:var(--theme-color)}
.main-menu > .current-menu-item > .menu-link,
.main-menu > .current-menu-ancestor > .menu-link,
.main-menu > .current_page_item > .menu-link{color:var(--theme-color);background:hsla(var(--theme-color-hsl),.1)}
.menu-caret{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;opacity:.55;transition:transform var(--transition)}
.menu-item:hover > .menu-link .menu-caret{transform:rotate(180deg)}
.sub-menu{
  position:absolute;top:calc(100% + 8px);left:0;min-width:190px;
  background:#fff;border-radius:var(--theme-border-radius-l);
  box-shadow:var(--shadow-md);padding:8px;margin:0;list-style:none;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all var(--transition);z-index:10;
}
.menu-item:hover > .sub-menu,.menu-item:focus-within > .sub-menu{opacity:1;visibility:visible;transform:translateY(0)}
.sub-menu .menu-link{display:block;padding:8px 12px;border-radius:var(--theme-border-radius-m);font-size:14px;white-space:nowrap}
.sub-menu .menu-link:hover{background:hsla(var(--theme-color-hsl),.07);color:var(--theme-color)}
.sub-menu .sub-menu{top:-8px;left:100%;margin-left:6px}

.navbar-action{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.action-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border:0;border-radius:50%;
  background:hsla(var(--theme-color-hsl),.06);color:var(--vk-text-2);
  transition:all var(--transition);
}
.action-btn:hover{background:var(--theme-color);color:#fff}
.header-points{
  display:inline-flex;align-items:center;gap:5px;
  padding:6px 14px;border-radius:var(--radius-pill);
  background:linear-gradient(135deg,#fff3d6,#ffe3a8);
  color:#8a5a00;font-size:13px;font-weight:600;
}
.header-points b{font-size:14px}

.user-menu{position:relative}
.user-menu__toggle{
  display:flex;align-items:center;gap:8px;
  padding:4px 12px 4px 4px;border:1px solid var(--theme-line-color);border-radius:var(--radius-pill);
  background:#fff;transition:all var(--transition);
}
.user-menu__toggle:hover{border-color:hsla(var(--theme-color-hsl),.4);box-shadow:var(--shadow-sm)}
.user-menu__avatar{width:32px;height:32px;border-radius:50%;object-fit:cover;display:block}
.user-menu__name{font-size:14px;font-weight:500;max-width:96px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-menu__dropdown{
  position:absolute;top:calc(100% + 10px);right:0;min-width:220px;
  background:#fff;border-radius:var(--theme-border-radius-l);box-shadow:var(--shadow-lg);
  padding:8px;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:all var(--transition);z-index:20;
}
.user-menu.is-open .user-menu__dropdown,.user-menu:hover .user-menu__dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.user-menu__header{display:flex;align-items:center;gap:10px;padding:10px;border-bottom:1px solid var(--theme-line-color);margin-bottom:6px}
.user-menu__header img{width:44px;height:44px;border-radius:50%;object-fit:cover}
.user-menu__header strong{display:block;font-size:14px}
.user-menu__points{font-size:12px;color:var(--vk-text-3)}
.user-menu__dropdown > a{display:block;padding:9px 12px;border-radius:var(--theme-border-radius-m);font-size:14px;color:var(--vk-text-2)}
.user-menu__dropdown > a:hover{background:hsla(var(--theme-color-hsl),.07);color:var(--theme-color)}
.user-menu__logout{color:var(--vk-red)!important;border-top:1px solid var(--theme-line-color);margin-top:4px;border-radius:0 0 var(--theme-border-radius-m) var(--theme-border-radius-m)!important}
.user-menu--guest{display:flex;align-items:center;gap:8px}
.user-menu--guest .btn-ghost{background:hsla(var(--theme-color-hsl),.06);color:var(--theme-color);border-color:transparent}

.header-search{border-top:1px solid var(--theme-line-color);background:#fff;padding:14px 0}
.header-search[hidden]{display:none}
.header-search .search-form{max-width:720px;margin:0 auto}

/* 移动端抽屉 */
.mobile-drawer{position:fixed;inset:0;z-index:1000;pointer-events:none;visibility:hidden}
.mobile-drawer.is-open{pointer-events:auto;visibility:visible}
.mobile-drawer__mask{position:absolute;inset:0;background:rgba(15,27,51,.5);opacity:0;transition:opacity var(--transition)}
.mobile-drawer.is-open .mobile-drawer__mask{opacity:1}
.mobile-drawer__panel{
  position:absolute;top:0;left:0;bottom:0;width:min(88vw,340px);
  background:#fff;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;
  transform:translateX(-100%);transition:transform var(--transition);overflow-y:auto;
}
.mobile-drawer.is-open .mobile-drawer__panel{transform:translateX(0)}
.mobile-drawer__head{display:flex;align-items:center;gap:12px;padding:18px;border-bottom:1px solid var(--theme-line-color);position:relative}
.mobile-drawer__avatar{width:48px;height:48px;border-radius:50%;object-fit:cover}
.mobile-drawer__head strong{display:block;font-size:15px}
.mobile-drawer__points{font-size:12px;color:var(--vk-text-3)}
.mobile-drawer__close{position:absolute;top:12px;right:12px;width:34px;height:34px;border:0;border-radius:50%;background:var(--vk-bg);font-size:20px;line-height:1;color:var(--vk-text-2)}
.mobile-drawer__nav{padding:10px}
.mobile-menu{list-style:none;margin:0;padding:0}
.mobile-menu > li > a{display:block;padding:12px 14px;border-radius:var(--theme-border-radius-m);font-size:15px;font-weight:500}
.mobile-menu > li > a:hover{background:hsla(var(--theme-color-hsl),.07);color:var(--theme-color)}
.mobile-submenu{list-style:none;margin:0;padding-left:14px}
.mobile-submenu a{display:block;padding:9px 14px;font-size:14px;color:var(--vk-text-2);border-radius:var(--theme-border-radius-m)}
.mobile-menu--extra{margin-top:10px;border-top:1px solid var(--theme-line-color);padding-top:10px}
.mobile-menu--extra a{font-size:14px;font-weight:400;color:var(--vk-text-2)}

/* ---------- 6. 页脚 ---------- */
.footer{background:var(--vk-dark);color:rgba(255,255,255,.72);margin-top:20px;font-size:14px}
.footer a{color:rgba(255,255,255,.72)}
.footer a:hover{color:#fff}
.footer .logo a,.footer .logo-text{color:#fff;-webkit-text-fill-color:#fff}
.footer-top{display:grid;grid-template-columns:1.4fr 2fr auto;gap:48px;padding:52px 0 40px}
.footer-about{margin:18px 0;line-height:1.75;max-width:360px}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13px}
.footer-contact b{display:inline-block;min-width:44px;color:rgba(255,255,255,.45);font-weight:400}
.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
.footer-title{font-size:15px;font-weight:600;color:#fff;margin:0 0 18px}
.footer-menu{list-style:none;margin:0;padding:0}
.footer-menu li{margin-bottom:10px}
.footer-menu--inline{display:flex;gap:18px;flex-wrap:wrap}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0;font-size:13px;color:rgba(255,255,255,.5);
}
.footer-copy{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.footer-copy a{color:rgba(255,255,255,.5)}
.footer .widget{margin-bottom:20px}
.footer .widget-title{color:#fff;font-size:15px;margin-bottom:14px}

/* 底部移动导航 */
.mobile-tabbar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:800;
  background:rgba(255,255,255,.97);backdrop-filter:blur(12px);
  border-top:1px solid var(--theme-line-color);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar__item{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
  padding:8px 0 6px;font-size:11px;color:var(--vk-text-3);
}
.mobile-tabbar__item.is-active{color:var(--theme-color)}
.mobile-tabbar__icon{font-size:19px;line-height:1.2}

.back-to-top{
  position:fixed;right:20px;bottom:88px;z-index:790;
  width:44px;height:44px;border:0;border-radius:50%;
  background:#fff;color:var(--vk-text-2);box-shadow:var(--shadow-md);
  font-size:18px;opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all var(--transition);
}
.back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--theme-color);color:#fff}

/* ---------- 7. 通用组件 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px;flex-wrap:wrap}
.sec-head__left{min-width:0}
.sec-title{font-size:28px;font-weight:700;margin:0;letter-spacing:-.4px}
.sec-sub{margin:8px 0 0;font-size:15px;color:var(--vk-text-3);max-width:640px}
.sec-more{font-size:14px;font-weight:500;color:var(--theme-color);white-space:nowrap}
.sec-more:hover{gap:6px}
.sec-head--light .sec-more{color:#9dc0ff}

.badge{display:inline-block;padding:2px 9px;border-radius:var(--radius-pill);background:hsla(var(--theme-color-hsl),.1);color:var(--theme-color);font-size:12px;font-weight:500;line-height:1.7}
.badge--green{background:rgba(7,193,96,.12);color:var(--vk-green)}
.badge--orange{background:rgba(255,138,0,.12);color:var(--vk-orange)}
.badge--red{background:rgba(245,34,45,.1);color:var(--vk-red)}
.tag{display:inline-flex;align-items:center;padding:2px 9px;border-radius:var(--theme-border-radius-s);background:var(--vk-bg-soft);color:var(--vk-text-2);font-size:12px;line-height:1.7;white-space:nowrap}
.tag--dark{background:rgba(255,255,255,.12);color:rgba(255,255,255,.85)}
.card{background:#fff;border-radius:var(--theme-border-radius-xl);box-shadow:var(--shadow-card);overflow:hidden}
.card-pad{padding:24px}
.link-more{font-size:14px;font-weight:500;color:var(--theme-color)}
.divider{height:1px;background:var(--theme-line-color);margin:24px 0;border:0}
.muted{color:var(--vk-text-3)}
.text-center{text-align:center}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}.mt-16{margin-top:16px}.mt-24{margin-top:24px}.mb-24{margin-bottom:24px}

.empty-state{padding:60px 20px;text-align:center;color:var(--vk-text-3)}
.empty-state-icon{font-size:44px;line-height:1;margin-bottom:12px;opacity:.8}
.empty-state p{margin:0;font-size:15px}

.alert{padding:14px 18px;border-radius:var(--theme-border-radius-m);font-size:14px;margin-bottom:18px;border-left:4px solid}
.alert-info{background:hsla(var(--theme-color-hsl),.07);border-color:var(--theme-color);color:var(--vk-text-2)}
.alert-success{background:rgba(7,193,96,.08);border-color:var(--vk-green);color:#067a3f}
.alert-warn{background:rgba(255,138,0,.09);border-color:var(--vk-orange);color:#a35a00}
.alert-error{background:rgba(245,34,45,.07);border-color:var(--vk-red);color:#b71c24}

/* 表单 */
input[type=text],input[type=search],input[type=email],input[type=password],input[type=number],input[type=tel],input[type=url],input[type=date],select,textarea{
  width:100%;padding:10px 14px;
  border:1px solid var(--theme-border-color);border-radius:var(--theme-border-radius-m);
  background:#fff;color:var(--vk-text);line-height:1.5;
  transition:border-color var(--transition),box-shadow var(--transition);
}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--theme-color);box-shadow:0 0 0 3px hsla(var(--theme-color-hsl),.14)}
textarea{min-height:110px;resize:vertical}
label{font-size:14px;font-weight:500}
.form-row{margin-bottom:18px}
.form-row > label{display:block;margin-bottom:7px}
.form-help{font-size:12px;color:var(--vk-text-3);margin-top:6px}
.form-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.checkbox-line{display:flex;align-items:flex-start;gap:8px;font-weight:400;font-size:14px;cursor:pointer}
.checkbox-line input{width:auto;margin-top:4px}

.search-form{display:flex;align-items:center;gap:0;background:#fff;border-radius:var(--radius-pill);padding:5px;box-shadow:var(--shadow-sm);border:1px solid var(--theme-line-color)}
.search-form .search-field{flex:1 1 auto;border:0;background:transparent;padding:8px 16px;font-size:14px;box-shadow:none}
.search-form .search-field:focus{box-shadow:none}
.search-form .search-scope{border:0;background:transparent;width:auto;padding:8px 4px;font-size:13px;color:var(--vk-text-3);box-shadow:none}
.search-form .search-submit{flex:0 0 auto;width:42px;height:38px;border:0;border-radius:var(--radius-pill);background:var(--theme-color);color:#fff;display:flex;align-items:center;justify-content:center;transition:background var(--transition)}
.search-form .search-submit:hover{background:var(--theme-hover)}

/* 分页 */
.pagination{display:flex;justify-content:center;align-items:center;gap:6px;margin:32px 0 8px;flex-wrap:wrap}
.pagination .page-numbers{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 12px;border-radius:var(--theme-border-radius-m);
  background:#fff;border:1px solid var(--theme-line-color);color:var(--vk-text-2);font-size:14px;
}
.pagination .page-numbers:hover{border-color:var(--theme-color);color:var(--theme-color)}
.pagination .page-numbers.current{background:var(--theme-color);border-color:var(--theme-color);color:#fff}
.pagination .page-numbers.dots{border:0;background:transparent}

/* 骨架屏 */
.skeleton{background:linear-gradient(90deg,#eef1f7 25%,#f7f9fc 37%,#eef1f7 63%);background-size:400% 100%;animation:vk-skeleton 1.4s ease infinite;border-radius:var(--theme-border-radius-m)}
@keyframes vk-skeleton{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* ---------- 8. 首屏 ---------- */
.hero{position:relative;overflow:hidden;padding:64px 0 72px;background:linear-gradient(135deg,#eef4ff 0%,#f7faff 55%,#eef8f3 100%)}
.hero__bg{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero__blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.55}
.hero__blob--1{width:420px;height:420px;background:rgba(43,110,246,.28);top:-120px;left:-80px}
.hero__blob--2{width:380px;height:380px;background:rgba(7,193,96,.2);bottom:-140px;right:8%}
.hero__grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(43,110,246,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(43,110,246,.05) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at 50% 40%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 0%,transparent 72%);
}
.hero__inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.8);border:1px solid hsla(var(--theme-color-hsl),.18);
  color:var(--theme-color);font-size:13px;font-weight:500;margin-bottom:18px;
}
.hero__title{font-size:44px;line-height:1.24;font-weight:800;letter-spacing:-1px;margin:0 0 18px;color:var(--vk-dark)}
.hero__sub{font-size:17px;color:var(--vk-text-2);max-width:520px;margin:0 0 28px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.hero__actions .btn-ghost{background:#fff;color:var(--vk-text);border-color:var(--theme-line-color);box-shadow:var(--shadow-sm)}
.hero__actions .btn-ghost:hover{color:var(--theme-color);border-color:hsla(var(--theme-color-hsl),.4)}
.hero__search{max-width:460px;margin-bottom:30px}
.hero__stats{display:flex;gap:36px;flex-wrap:wrap}
.hero__stat strong{display:block;font-size:26px;font-weight:800;color:var(--vk-dark);line-height:1.2}
.hero__stat span{font-size:13px;color:var(--vk-text-3)}

.hero__visual{position:relative;min-height:420px}
.hero__cards{position:relative;height:100%}
.hero__card{
  position:absolute;display:flex;flex-direction:column;width:230px;
  background:#fff;border-radius:var(--theme-border-radius-xl);box-shadow:var(--shadow-lg);
  overflow:hidden;transition:transform var(--transition),box-shadow var(--transition);
}
.hero__card:hover{transform:translateY(-6px) rotate(0deg)!important;box-shadow:0 26px 60px rgba(15,27,51,.18);z-index:5}
.hero__card img{width:100%;height:130px;object-fit:cover;display:block}
.hero__card-body{display:flex;flex-direction:column;gap:4px;padding:14px}
.hero__card-tag{font-size:11px;color:var(--theme-color);font-weight:500}
.hero__card-body strong{font-size:15px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.hero__card-price{font-size:14px;font-weight:700;color:var(--vk-orange);margin-top:2px}
.hero__card-price .price-free{color:var(--vk-green)}
.hero__card--1{top:10px;left:0;transform:rotate(-4deg);z-index:2}
.hero__card--2{top:70px;left:150px;transform:rotate(3deg);z-index:3}
.hero__card--3{top:220px;left:36px;transform:rotate(-2deg);z-index:1}
.hero__badge{
  position:absolute;display:flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:var(--radius-pill);
  background:#fff;box-shadow:var(--shadow-md);font-size:13px;font-weight:600;color:var(--vk-text);
  animation:vk-float 4s ease-in-out infinite;
}
.hero__badge span{font-size:17px}
.hero__badge--game{top:8px;right:0}
.hero__badge--rank{bottom:36px;right:16px;animation-delay:1.2s}
@keyframes vk-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* ---------- 9. 特色卡片 ---------- */
.features{padding:8px 0 40px;margin-top:-36px;position:relative;z-index:2;background:transparent}
.features__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.feature-card{
  background:#fff;border-radius:var(--theme-border-radius-xl);padding:26px 22px;
  box-shadow:var(--shadow-card);border:1px solid rgba(255,255,255,.6);
  transition:transform var(--transition),box-shadow var(--transition);
}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-card__icon{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:14px;background:hsla(var(--theme-color-hsl),.09);font-size:24px;margin-bottom:14px}
.feature-card__title{font-size:17px;margin:0 0 8px}
.feature-card__desc{font-size:14px;line-height:1.65;color:var(--vk-text-3);margin:0}

/* ---------- 10. 课程分类 ---------- */
.cats__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.cat-card{
  --cat-color:var(--theme-color);
  display:flex;flex-direction:column;gap:4px;
  padding:22px;border-radius:var(--theme-border-radius-l);background:var(--vk-bg);
  border:1px solid transparent;transition:all var(--transition);position:relative;overflow:hidden;
}
.cat-card::after{content:"";position:absolute;right:-20px;bottom:-24px;width:88px;height:88px;border-radius:50%;background:var(--cat-color);opacity:.07;transition:transform var(--transition)}
.cat-card:hover{background:#fff;border-color:hsla(var(--theme-color-hsl),.2);box-shadow:var(--shadow-md);transform:translateY(-3px);color:var(--vk-text)}
.cat-card:hover::after{transform:scale(1.35)}
.cat-card__icon{font-size:26px;line-height:1;margin-bottom:8px}
.cat-card__name{font-size:16px;font-weight:600;color:var(--vk-text)}
.cat-card__count{font-size:12px;color:var(--vk-text-3)}

/* ---------- 11. 课程卡片 ---------- */
.course-grid{align-items:stretch}
.course-card{
  display:flex;flex-direction:column;background:#fff;border-radius:var(--theme-border-radius-xl);
  overflow:hidden;box-shadow:var(--shadow-card);border:1px solid rgba(15,27,51,.04);
  transition:transform var(--transition),box-shadow var(--transition);height:100%;
}
.course-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.course-card__media{position:relative;display:block;aspect-ratio:16/10;overflow:hidden;background:var(--vk-bg-soft)}
.course-card__media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s ease}
.course-card:hover .course-card__media img{transform:scale(1.05)}
.course-card__type{
  position:absolute;left:10px;top:10px;padding:3px 10px;border-radius:var(--radius-pill);
  background:rgba(15,27,51,.62);color:#fff;font-size:11px;font-weight:500;backdrop-filter:blur(4px);
}
.course-card__free{
  position:absolute;right:10px;top:10px;padding:3px 10px;border-radius:var(--radius-pill);
  background:var(--vk-green);color:#fff;font-size:11px;font-weight:600;
}
.course-card__body{display:flex;flex-direction:column;gap:8px;padding:16px;flex:1}
.course-card__cats{display:flex;gap:6px;flex-wrap:wrap}
.course-card__title{font-size:16px;line-height:1.45;margin:0;font-weight:600}
.course-card__title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--vk-text)}
.course-card__title a:hover{color:var(--theme-color)}
.course-card__excerpt{font-size:13px;color:var(--vk-text-3);line-height:1.6;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.course-card__footer{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto;padding-top:10px;border-top:1px dashed var(--theme-line-color)}
.course-card__price{font-size:17px;font-weight:700;color:var(--vk-orange)}
.course-card__price .price-free{color:var(--vk-green);font-size:15px}
.course-card__meta{font-size:12px;color:var(--vk-text-3)}

/* ---------- 12. 游戏卡片 ---------- */
.game-grid{align-items:stretch}
.game-card{
  display:flex;flex-direction:column;border-radius:var(--theme-border-radius-xl);overflow:hidden;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  transition:transform var(--transition),box-shadow var(--transition),background var(--transition);
}
.game-card:hover{transform:translateY(-5px);background:rgba(255,255,255,.1);box-shadow:0 18px 40px rgba(0,0,0,.28);color:#fff}
.game-card__media{position:relative;display:block;aspect-ratio:3/2;overflow:hidden;background:#1b2b4a}
.game-card__media img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s ease}
.game-card:hover .game-card__media img{transform:scale(1.06)}
.game-card__play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:20px;background:rgba(15,27,51,.32);
  opacity:0;transition:opacity var(--transition);
}
.game-card__play::before{content:"";position:absolute;width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.92)}
.game-card__play{text-indent:0}
.game-card__play{font-size:0}
.game-card__play::after{content:"▶";position:relative;color:var(--theme-color);font-size:18px;margin-left:3px}
.game-card:hover .game-card__play{opacity:1}
.game-card__body{display:flex;flex-direction:column;gap:8px;padding:14px 16px}
.game-card__title{font-size:15px;font-weight:600;color:#fff;line-height:1.45}
.game-card__meta{display:flex;align-items:center;gap:8px;font-size:12px;color:rgba(255,255,255,.55)}
.game-card__diff{color:rgba(255,255,255,.45)}

/* ---------- 13. 排行榜 ---------- */
.rank-board{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.rank-board__item{
  display:flex;align-items:center;gap:12px;padding:12px 18px;
  background:#fff;border-radius:var(--theme-border-radius-l);box-shadow:var(--shadow-card);
  transition:transform var(--transition),box-shadow var(--transition);
}
.rank-board__item:hover{transform:translateX(3px);box-shadow:var(--shadow-md)}
.rank-board__no{
  display:inline-flex;align-items:center;justify-content:center;
  width:26px;height:26px;border-radius:50%;background:var(--vk-bg-soft);
  color:var(--vk-text-3);font-size:13px;font-weight:700;flex:0 0 auto;
}
.rank-board__item--1 .rank-board__no{background:linear-gradient(135deg,#ffd666,#ffb400);color:#fff}
.rank-board__item--2 .rank-board__no{background:linear-gradient(135deg,#d6dbe6,#aab4c6);color:#fff}
.rank-board__item--3 .rank-board__no{background:linear-gradient(135deg,#ffc08a,#e8915a);color:#fff}
.rank-board__avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;flex:0 0 auto}
.rank-board__name{flex:1 1 auto;font-size:14px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-board__points{font-size:12px;color:var(--vk-text-3);white-space:nowrap}
.rank-board__points b{font-size:16px;color:var(--vk-orange);font-weight:700}

/* ---------- 14. 资源列表 ---------- */
.resource-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.resource-row{
  display:flex;align-items:center;gap:14px;padding:14px 18px;
  background:var(--vk-bg);border-radius:var(--theme-border-radius-l);
  transition:all var(--transition);border:1px solid transparent;
}
.resource-row:hover{background:#fff;border-color:hsla(var(--theme-color-hsl),.18);box-shadow:var(--shadow-sm);color:var(--vk-text)}
.resource-row__icon{width:42px;height:42px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:12px;font-size:20px}
.resource-row__main{display:flex;flex-direction:column;gap:3px;min-width:0;flex:1 1 auto}
.resource-row__main strong{font-size:14px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.resource-row__meta{font-size:12px;color:var(--vk-text-3)}
.resource-row__action{font-size:13px;color:var(--theme-color);white-space:nowrap}

/* ---------- 15. 学习流程 ---------- */
.process__list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;list-style:none;margin:0;padding:0;counter-reset:step}
.process__item{position:relative;padding:26px 22px;background:#fff;border-radius:var(--theme-border-radius-xl);box-shadow:var(--shadow-card)}
.process__item::after{content:"";position:absolute;top:44px;right:-14px;width:20px;height:2px;background:var(--theme-border-color)}
.process__item:last-child::after{display:none}
.process__no{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
  border-radius:10px;background:linear-gradient(135deg,var(--theme-color),#6b9cff);color:#fff;
  font-weight:700;font-size:15px;margin-bottom:14px;
}
.process__title{font-size:16px;margin:0 0 6px}
.process__desc{font-size:13px;color:var(--vk-text-3);margin:0;line-height:1.65}

/* ---------- 16. 资讯卡片 ---------- */
.news-card{display:flex;flex-direction:column;background:#fff;border-radius:var(--theme-border-radius-xl);overflow:hidden;box-shadow:var(--shadow-card);transition:transform var(--transition),box-shadow var(--transition)}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.news-card__media{display:block;aspect-ratio:16/9;overflow:hidden}
.news-card__media img{width:100%;height:100%;object-fit:cover}
.news-card__body{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}
.news-card__date{font-size:12px;color:var(--vk-text-3)}
.news-card__title{font-size:17px;line-height:1.45;margin:0}
.news-card__title a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card__excerpt{font-size:13px;color:var(--vk-text-3);margin:0;line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 17. CTA ---------- */
.cta .container{padding-top:0;padding-bottom:0}
.cta__inner{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:44px 48px;border-radius:24px;
  background:linear-gradient(120deg,#2b6ef6,#4f8bff 55%,#07c160);
  color:#fff;box-shadow:0 20px 50px hsla(var(--theme-color-hsl),.28);
  position:relative;overflow:hidden;
}
.cta__inner::before{content:"";position:absolute;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.12);right:-80px;top:-120px}
.cta__title{font-size:28px;margin:0 0 8px;color:#fff}
.cta__desc{margin:0;color:rgba(255,255,255,.86);font-size:15px}
.cta__actions{display:flex;gap:12px;flex-wrap:wrap;position:relative}
.cta__actions .btn-ghost{background:rgba(255,255,255,.18)}
.cta__actions .btn-ghost:hover{background:#fff;color:var(--theme-color)}

/* ---------- 18. 页面头图 ---------- */
.page-hero{
  padding:44px 0;background:linear-gradient(135deg,#eef4ff,#f8fbff);
  border-bottom:1px solid var(--theme-line-color);position:relative;overflow:hidden;
  background-size:cover;background-position:center;
}
.page-hero__title{font-size:32px;margin:0;letter-spacing:-.5px}
.page-hero__sub{margin:10px 0 0;font-size:15px;color:var(--vk-text-3);max-width:720px}
.breadcrumb{margin:0;padding:14px 0 0;font-size:13px}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:6px;list-style:none;margin:0;padding:0;color:var(--vk-text-3)}
.breadcrumb-item{display:flex;align-items:center;gap:6px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--theme-border-color)}
.breadcrumb-item a{color:var(--vk-text-3)}
.breadcrumb-item a:hover{color:var(--theme-color)}
.breadcrumb-item.is-current span{color:var(--vk-text-2)}

/* ---------- 19. 文章/归档列表 ---------- */
.post-list{display:flex;flex-direction:column;gap:20px}
.post-card{display:flex;gap:22px;background:#fff;border-radius:var(--theme-border-radius-xl);padding:20px;box-shadow:var(--shadow-card);transition:box-shadow var(--transition)}
.post-card:hover{box-shadow:var(--shadow-md)}
.post-card__media{flex:0 0 240px;border-radius:var(--theme-border-radius-l);overflow:hidden;aspect-ratio:16/10;display:block}
.post-card__media img{width:100%;height:100%;object-fit:cover}
.post-card__body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.post-card__title{font-size:20px;margin:0 0 10px;line-height:1.4}
.post-card__meta{display:flex;gap:12px;font-size:12px;color:var(--vk-text-3);margin-bottom:10px}
.post-card__excerpt{font-size:14px;color:var(--vk-text-2);line-height:1.7}
.post-card__excerpt p{margin:0}
.archive-list{display:flex;flex-direction:column;gap:16px}
.archive-item{display:flex;gap:18px;background:#fff;border-radius:var(--theme-border-radius-l);padding:18px;box-shadow:var(--shadow-card)}
.archive-item__media{flex:0 0 170px;border-radius:var(--theme-border-radius-m);overflow:hidden;aspect-ratio:4/3}
.archive-item__media img{width:100%;height:100%;object-fit:cover}
.archive-item__body{flex:1 1 auto;min-width:0}
.archive-item__title{font-size:18px;margin:0 0 8px;line-height:1.4}
.archive-item__excerpt{font-size:14px;color:var(--vk-text-3);margin:0 0 8px}
.archive-item__meta{font-size:12px;color:var(--vk-text-3)}
.search-again{margin-bottom:24px;max-width:620px}
.post-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:24px}
.post-nav__item{display:flex;flex-direction:column;gap:4px;padding:16px;background:#fff;border-radius:var(--theme-border-radius-l);box-shadow:var(--shadow-card)}
.post-nav__item span{font-size:12px;color:var(--vk-text-3)}
.post-nav__item strong{font-size:14px;font-weight:500;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-nav__item--next{text-align:right}

/* ---------- 20. 正文排版 ---------- */
.entry{background:#fff;border-radius:var(--theme-border-radius-xl);padding:32px;box-shadow:var(--shadow-card)}
.entry-meta{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--vk-text-3);margin-bottom:18px;padding-bottom:16px;border-bottom:1px solid var(--theme-line-color)}
.entry-content{font-size:16px;line-height:1.85;color:var(--vk-text-2)}
.entry-content h1,.entry-content h2,.entry-content h3,.entry-content h4{color:var(--vk-text);margin-top:1.6em;margin-bottom:.7em}
.entry-content h2{font-size:24px}
.entry-content h3{font-size:20px}
.entry-content a{color:var(--theme-color);text-decoration:underline;text-underline-offset:3px}
.entry-content img{border-radius:var(--theme-border-radius-m);height:auto}
.entry-content ul,.entry-content ol{padding-left:1.5em}
.entry-content li{margin-bottom:.4em}
.entry-content blockquote{
  margin:1.4em 0;padding:16px 22px;border-left:4px solid var(--theme-color);
  background:hsla(var(--theme-color-hsl),.05);border-radius:0 var(--theme-border-radius-m) var(--theme-border-radius-m) 0;color:var(--vk-text-2);
}
.entry-content blockquote p:last-child{margin-bottom:0}
.entry-content table{margin:1.4em 0;font-size:14px}
.entry-content table th,.entry-content table td{border:1px solid var(--theme-line-color);padding:9px 12px}
.entry-content table th{background:var(--vk-bg);font-weight:600}
.entry-content .wp-block-image{margin:1.4em 0}
.entry-content iframe{max-width:100%;border-radius:var(--theme-border-radius-m)}
.entry-tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:22px;padding-top:18px;border-top:1px solid var(--theme-line-color)}
.entry-comments{margin-top:32px;padding-top:24px;border-top:1px solid var(--theme-line-color)}
.text-indent .entry-content p{text-indent:2em}

/* 评论 */
.comments-area{background:#fff;border-radius:var(--theme-border-radius-xl);padding:26px;box-shadow:var(--shadow-card);margin-top:20px}
.comments-title{font-size:18px;margin:0 0 18px}
.comment-list{list-style:none;margin:0;padding:0}
.comment-list .comment{border-bottom:1px solid var(--theme-line-color);padding:16px 0}
.comment-list .comment:last-child{border-bottom:0}
.comment-author{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600}
.comment-author img{border-radius:50%}
.comment-metadata{font-size:12px;color:var(--vk-text-3);margin:4px 0 8px}
.comment-content{font-size:14px;color:var(--vk-text-2);line-height:1.7}
.comment-list .children{list-style:none;padding-left:24px;margin:0}
.comment-respond{margin-top:20px}
.comment-notes{font-size:12px;color:var(--vk-text-3)}
.comment-form p{margin-bottom:14px}
.comment-form label{display:block;margin-bottom:6px}

/* ---------- 21. 侧栏 ---------- */
.widget{background:#fff;border-radius:var(--theme-border-radius-l);padding:20px;box-shadow:var(--shadow-card);margin-bottom:18px}
.widget:last-child{margin-bottom:0}
.widget-title{font-size:16px;font-weight:600;margin:0 0 14px;padding-bottom:12px;border-bottom:1px solid var(--theme-line-color);position:relative}
.widget-title::after{content:"";position:absolute;left:0;bottom:-1px;width:36px;height:2px;background:var(--theme-color);border-radius:2px}
.widget ul{list-style:none;margin:0;padding:0}
.widget li{padding:8px 0;border-bottom:1px dashed var(--theme-line-color);font-size:14px}
.widget li:last-child{border-bottom:0}
.widget li a{color:var(--vk-text-2)}
.widget li a:hover{color:var(--theme-color)}
.widget-course-list li{padding:10px 0}
.widget-course{display:flex;gap:12px;align-items:center}
.widget-course img{width:82px;height:58px;object-fit:cover;border-radius:var(--theme-border-radius-s);flex:0 0 auto}
.widget-course__text{display:flex;flex-direction:column;gap:4px;min-width:0}
.widget-course__title{font-size:14px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.widget-course__price{font-size:13px;font-weight:600;color:var(--vk-orange)}
.widget-rank-list{list-style:none;margin:0;padding:0}
.widget-rank-item{display:flex;align-items:center;gap:10px;padding:7px 0;border-bottom:1px dashed var(--theme-line-color);font-size:13px}
.widget-rank-item:last-child{border-bottom:0}
.widget-rank-no{width:20px;height:20px;border-radius:50%;background:var(--vk-bg-soft);color:var(--vk-text-3);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.widget-rank-no.rank-1{background:linear-gradient(135deg,#ffd666,#ffb400);color:#fff}
.widget-rank-no.rank-2{background:linear-gradient(135deg,#d6dbe6,#aab4c6);color:#fff}
.widget-rank-no.rank-3{background:linear-gradient(135deg,#ffc08a,#e8915a);color:#fff}
.widget-rank-avatar{width:26px;height:26px;border-radius:50%;object-fit:cover}
.widget-rank-name{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.widget-rank-score{font-weight:700;color:var(--vk-orange)}

/* 区块占位（后台编辑或数据为空时） */
.vk-block-placeholder{
  padding:36px 24px;text-align:center;color:var(--vk-text-3);font-size:14px;
  background:var(--vk-bg);border:1px dashed var(--theme-border-color);
  border-radius:var(--theme-border-radius-l);
}

/* ---------- 22. 404 ---------- */
.error-404{text-align:center;padding:70px 0 90px}
.error-404__code{font-size:110px;font-weight:800;line-height:1;letter-spacing:-4px;background:linear-gradient(135deg,var(--theme-color),#9dc0ff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.error-404__title{font-size:26px;margin:16px 0 10px}
.error-404__desc{color:var(--vk-text-3);margin-bottom:24px}
.error-404__search{max-width:480px;margin:0 auto 26px}
.error-404__actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------- 23. 通用过滤栏 ---------- */
.filter-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.filter-tab{padding:7px 16px;border-radius:var(--radius-pill);background:#fff;border:1px solid var(--theme-line-color);font-size:14px;color:var(--vk-text-2);transition:all var(--transition)}
.filter-tab:hover{border-color:hsla(var(--theme-color-hsl),.4);color:var(--theme-color)}
.filter-tab.is-active{background:var(--theme-color);border-color:var(--theme-color);color:#fff}

.load-more-wrap{display:flex;align-items:center;justify-content:center;gap:12px;margin:28px 0}
.load-more-status{font-size:13px;color:var(--vk-text-3)}

/* 星标 */
.vk-stars{display:inline-flex;gap:2px;font-size:13px;color:#e4e8f0}
.vk-star.is-on{color:#ffb400}

/* 轻提示 */
.vk-toast{
  position:fixed;left:50%;top:18%;transform:translate(-50%,-12px);z-index:99999;
  max-width:80vw;padding:12px 22px;border-radius:var(--theme-border-radius-m);
  background:rgba(15,27,51,.92);color:#fff;font-size:14px;line-height:1.5;
  box-shadow:var(--shadow-lg);opacity:0;transition:opacity .22s,transform .22s;pointer-events:none;
}
.vk-toast.is-show{opacity:1;transform:translate(-50%,0)}
.vk-toast--success{background:rgba(7,193,96,.96)}
.vk-toast--error{background:rgba(245,34,45,.96)}
.vk-toast--warn{background:rgba(255,138,0,.96)}

/* ---------- 24. 响应式 ---------- */
@media (max-width:1239px){
  :root{--theme-container-width:1080px;--theme-sidebar-width:270px;--theme-content-sidebar-gap:28px;--theme-post-item-gap:20px}
  .hero__title{font-size:38px}
  .hero__card{width:210px}
  .hero__card--2{left:120px}
  .features__grid,.cats__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}
  .process__list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .process__item:nth-child(2)::after{display:none}
}
@media (max-width:991px){
  :root{--theme-container-width:100%;--theme-gutter:16px}
  .navbar-menu{display:none}
  .navbar-toggle{display:flex}
  .header-wrap{gap:12px}
  .navbar-action{margin-left:auto}
  .user-menu__name{display:none}
  .header-points{display:none}
  .sidebar{display:none}
  .wrap{gap:0}
  .hero{padding:40px 0 48px}
  .hero__inner{grid-template-columns:1fr;gap:32px}
  .hero__title{font-size:32px}
  .hero__sub{font-size:15px}
  .hero__visual{min-height:300px;order:-1}
  .hero__card{width:180px}
  .hero__card img{height:100px}
  .hero__card--1{left:0;top:0}
  .hero__card--2{left:calc(50% - 40px);top:40px}
  .hero__card--3{display:none}
  .hero__badge--game{top:-6px;right:0}
  .hero__badge--rank{bottom:0;right:0}
  .features{margin-top:0;padding-top:24px}
  .features__grid,.cats__grid,.grid-4,.grid-3,.game-grid,.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sec-title{font-size:22px}
  .sec-sub{font-size:14px}
  .section{padding:36px 0}
  .post-card{flex-direction:column}
  .post-card__media{flex:0 0 auto;width:100%}
  .archive-item__media{flex:0 0 120px}
  .cta__inner{padding:28px;border-radius:16px}
  .cta__title{font-size:22px}
  .footer-top{grid-template-columns:1fr;gap:28px;padding:36px 0 28px}
  .footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}
  .entry{padding:22px}
  .mobile-tabbar{display:flex}
  body{padding-bottom:calc(56px + env(safe-area-inset-bottom))}
  .back-to-top{bottom:74px;right:14px;width:40px;height:40px}
  .rank-board{grid-template-columns:1fr}
  .resource-list{grid-template-columns:1fr}
}
@media (max-width:767px){
  body{font-size:14px}
  .hero__title{font-size:26px;letter-spacing:-.5px}
  .hero__eyebrow{font-size:12px}
  .hero__stats{gap:22px}
  .hero__stat strong{font-size:21px}
  .hero__card{width:150px}
  .hero__card img{height:84px}
  .hero__card-body{padding:10px}
  .hero__card-body strong{font-size:13px}
  .features__grid,.cats__grid,.grid-4,.grid-3,.grid-2,.game-grid,.news-grid,.process__list{grid-template-columns:1fr}
  .process__item::after{display:none}
  .page-hero{padding:28px 0}
  .page-hero__title{font-size:24px}
  .form-grid{grid-template-columns:1fr}
  .post-nav{grid-template-columns:1fr}
  .post-nav__item--next{text-align:left}
  .footer-links{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cat-card{padding:16px;flex-direction:row;align-items:center;gap:12px}
  .cat-card__icon{margin:0}
  .cat-card__name{flex:1 1 auto}
  .course-card__title{font-size:15px}
  .sec-head{gap:10px;margin-bottom:20px}
  .back-to-top{bottom:68px}
  .pagination .page-numbers{min-width:34px;height:34px;font-size:13px}
}

/* 打印 */
@media print{
  .header,.footer,.mobile-tabbar,.back-to-top,.sidebar,.mobile-drawer,.navbar-action{display:none!important}
  body{background:#fff}
  .entry{box-shadow:none;padding:0}
}

/* ==========================================================================
   25. 站点预设相关：悬浮页头 / 简洁页脚 / 悬浮客服 / 图片版首屏
   ========================================================================== */

/* 页头透明悬浮（首页 Banner 之上）——只负责定位，颜色由下面的质感类决定 */
.header--overlay{
  position:absolute;left:0;right:0;top:0;
  background:transparent;border-bottom-color:transparent;
  backdrop-filter:none;-webkit-backdrop-filter:none;
  box-shadow:none;
}

/* 质感 A：白色毛玻璃（默认，Logo 原色可读，与 Banner 明确分层） */
.header--light{
  background:rgba(255,255,255,.88);
  border-bottom:1px solid rgba(20,40,80,.08);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
}
.header--light .logo,
.header--light .logo a{color:var(--vk-text)}
.header--light .main-menu > .menu-item > .menu-link{color:var(--vk-text)}
.header--light .main-menu > .menu-item > .menu-link:hover,
.header--light .main-menu > .current-menu-item > .menu-link{background:hsla(var(--theme-color-hsl),.08);color:var(--theme-color)}
.header--light .action-btn{background:hsla(var(--theme-color-hsl),.06);color:var(--vk-text-2)}
.header--light .action-btn:hover{background:var(--theme-color);color:#fff}
.header--light .navbar-toggle .icon-bar{background:var(--vk-text)}
.header--light .user-menu--guest .btn-ghost{background:hsla(var(--theme-color-hsl),.06);color:var(--theme-color);border-color:transparent}
.header--light .user-menu--guest .btn-ghost:hover{background:var(--theme-color);color:#fff}
.header--light .user-menu__toggle{background:#fff;border-color:var(--theme-line-color)}
.header--light .user-menu__name{color:var(--vk-text)}
.header--light .header-points{background:linear-gradient(135deg,#fff3d6,#ffe3a8);color:#8a5a00}

/* 质感 B：深色毛玻璃条（Logo 自动反白） */
.header--glass{
  background:rgba(10,18,33,.55);
  border-bottom:1px solid rgba(255,255,255,.12);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
}
.header--glass .logo-img{filter:brightness(0) invert(1)}
/* 质感 C：顶部渐变遮罩（无硬分隔） */
.header--gradient{
  background:linear-gradient(180deg,rgba(10,18,33,.62),rgba(10,18,33,0));
  border-bottom-color:transparent;
}
/* 质感 D：完全透明 */
.header--none{background:transparent;border-bottom-color:transparent}
/* 深色质感（glass / gradient / none）才使用白字；白色毛玻璃用默认深色字 */
.header--overlay:not(.header--light) .logo-text,
.header--overlay:not(.header--light) .main-menu > .menu-item > .menu-link,
.header--overlay:not(.header--light) .action-btn,
.header--overlay:not(.header--light) .user-menu--guest .btn-ghost{color:#fff}
.header--overlay:not(.header--light) .logo-text{
  background:none;-webkit-text-fill-color:#fff;
}
.header--overlay:not(.header--light) .main-menu > .menu-item > .menu-link:hover,
.header--overlay:not(.header--light) .main-menu > .current-menu-item > .menu-link{
  background:rgba(255,255,255,.16);color:#fff;
}
.header--overlay:not(.header--light) .action-btn{background:rgba(255,255,255,.14)}
.header--overlay:not(.header--light) .action-btn:hover{background:#fff;color:var(--theme-color)}
.header--overlay:not(.header--light) .user-menu--guest .btn-ghost{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.34)}
.header--overlay:not(.header--light) .user-menu--guest .btn-ghost:hover{background:#fff;color:var(--theme-color)}
.header--overlay:not(.header--light) .navbar-toggle .icon-bar{background:#fff}
.header--overlay:not(.header--light) .header-points{background:rgba(255,255,255,.18);color:#fff}

/* 滚动后恢复实色 */
.header--overlay.is-scrolled{
  position:fixed;background:rgba(255,255,255,.96);
  border-bottom-color:var(--theme-line-color);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  box-shadow:0 4px 20px rgba(15,27,51,.07);
}
.header--overlay.is-scrolled .logo-text{color:var(--vk-text);-webkit-text-fill-color:transparent;background:linear-gradient(135deg,var(--theme-color),#6b9cff);-webkit-background-clip:text;background-clip:text}
.header--overlay.is-scrolled .main-menu > .menu-item > .menu-link{color:var(--vk-text)}
.header--overlay.is-scrolled .main-menu > .menu-item > .menu-link:hover,
.header--overlay.is-scrolled .main-menu > .current-menu-item > .menu-link{background:hsla(var(--theme-color-hsl),.08);color:var(--theme-color)}
.header--overlay.is-scrolled .action-btn{background:hsla(var(--theme-color-hsl),.06);color:var(--vk-text-2)}
.header--overlay.is-scrolled .navbar-toggle .icon-bar{background:var(--vk-text)}
.header--overlay.is-scrolled .user-menu--guest .btn-ghost{background:hsla(var(--theme-color-hsl),.06);color:var(--theme-color);border-color:transparent}
.header--overlay.is-scrolled .header-points{background:linear-gradient(135deg,#fff3d6,#ffe3a8);color:#8a5a00}

/* Logo 高度可配 */
.logo-img{max-height:var(--vk-logo-height,44px)}

/* 图片版首屏（Banner） */
.hero--image{
  position:relative;padding:0;background:var(--vk-dark) center/cover no-repeat;
  color:#fff;min-height:520px;display:flex;align-items:center;
}
.hero--image .hero__overlay{
  position:absolute;inset:0;z-index:0;
  background:linear-gradient(90deg,rgba(10,18,33,.82),rgba(10,18,33,.42) 62%,rgba(10,18,33,.2));
}
.hero--image .hero__inner{
  position:relative;z-index:1;display:block;
  padding-top:120px;padding-bottom:90px;
}
.hero--image .hero__content{max-width:760px;color:#fff}
.hero--image .hero__title{color:#fff;font-size:38px;line-height:1.24;font-weight:700;letter-spacing:-.5px;margin:0 0 14px}
.hero--image .hero__sub{color:rgba(255,255,255,.92);font-size:24px;line-height:1.5;margin:0 0 26px;max-width:640px}
.hero--image .hero__actions .btn-primary{background:var(--theme-color);border-color:var(--theme-color)}
.hero--image .hero__actions .btn-primary:hover{background:var(--theme-hover);border-color:var(--theme-hover)}
.hero--image .hero__actions .btn-ghost{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5);color:#fff}
.hero--image .hero__actions .btn-ghost:hover{background:#fff;color:var(--theme-color)}
.hero--image.hero--center .hero__content{margin:0 auto;text-align:center;max-width:820px}
.hero--image + .features.mt-overlap{margin-top:-46px}
.hero--image .hero__eyebrow{display:none}
.hero--image .hero__search .search-form{box-shadow:none}
@media (max-width:991px){
  .hero--image{min-height:380px}
  .hero--image .hero__inner{padding-top:96px;padding-bottom:64px}
  .hero--image .hero__title{font-size:28px}
  .hero--image .hero__sub{font-size:18px}
}
@media (max-width:767px){
  .hero--image{min-height:300px}
  .hero--image .hero__inner{padding-top:82px;padding-bottom:48px}
  .hero--image .hero__title{font-size:23px}
  .hero--image .hero__sub{font-size:15px;margin-bottom:18px}
}

/* 简洁页脚 */
.footer--simple{background:var(--vk-dark);color:rgba(255,255,255,.72)}
.footer--simple .container{padding-top:0;padding-bottom:0}
.footer-bottom--center{
  flex-direction:column;align-items:center;gap:10px;
  border-top:0;padding:26px 0;text-align:center;
}
.footer-bottom--center .footer-menu--inline{justify-content:center;gap:22px}
.footer-bottom--center .footer-copy{justify-content:center;color:rgba(255,255,255,.55)}
.footer-bottom--center .footer-copy a{color:rgba(255,255,255,.7)}
.footer-bottom--center .footer-copy a:hover{color:#fff}
@media (max-width:767px){
  .footer-bottom--center .footer-menu--inline{flex-wrap:wrap;gap:12px 18px}
}

/* 悬浮客服 */
.contact-float{
  position:fixed;right:18px;bottom:96px;
  z-index:880;display:flex;flex-direction:column;gap:8px;
}
.contact-float__item{
  position:relative;width:44px;height:44px;border:0;border-radius:12px;
  background:#fff;color:var(--vk-text-2);box-shadow:var(--shadow-md);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all var(--transition);
}
.contact-float__item:hover{background:var(--theme-color);color:#fff}
.contact-float__icon{font-size:18px;line-height:1}
.contact-float__panel{
  position:absolute;right:calc(100% + 10px);top:50%;transform:translateY(-50%) translateX(6px);
  min-width:170px;padding:14px 16px;border-radius:12px;background:#fff;
  box-shadow:var(--shadow-lg);color:var(--vk-text);text-align:left;
  display:flex;flex-direction:column;gap:6px;font-size:13px;
  opacity:0;visibility:hidden;transition:all var(--transition);pointer-events:none;
}
.contact-float__item:hover .contact-float__panel,
.contact-float__item:focus-within .contact-float__panel{
  opacity:1;visibility:visible;transform:translateY(-50%) translateX(0);pointer-events:auto;
}
.contact-float__panel strong{font-size:14px}
.contact-float__panel a{color:var(--theme-color);font-weight:600}
.contact-float__panel img{border-radius:8px;width:140px;height:140px;object-fit:cover}
.contact-float__muted{color:var(--vk-text-3);font-size:12px;line-height:1.5}
@media (max-width:991px){
  .contact-float{display:none}
}

/* ==========================================================================
   26. 全宽首页与高级排版
   ========================================================================== */

/* 首页：全宽、无侧栏、无卡片外壳 */
.front-main{display:block;width:100%}
.front-content{width:100%;overflow-x:clip}
.vk-front .site-wrap{padding-bottom:0}
.front-content > .section:first-child{padding-top:0}

/* 区块节奏与标题层级 */
.section{padding:84px 0}
.sec-head{margin-bottom:44px;align-items:flex-end}
.sec-title{font-size:clamp(26px,2.6vw,38px);font-weight:800;letter-spacing:-.8px;line-height:1.25}
.sec-sub{font-size:16px;margin-top:10px;max-width:720px;line-height:1.7}
.sec-more{font-weight:600}

/* 首页区块底色节奏：暗 → 浅灰 → 白 → 深色 → 渐变 */
.front-content .features{background:#f5f8fd;margin-top:0;padding:84px 0}
.front-content .courses-home{background:#fff}
.front-content .resources-home{background:#f5f8fd}

/* Hero：全屏铺满视窗 */
.hero--image{
  min-height:min(84vh,860px);padding:0;display:flex;align-items:center;
  background-size:cover;background-position:center;
}
.hero--image .hero__inner{padding-top:150px;padding-bottom:120px;width:100%}
.hero--image .hero__content{max-width:880px}
.hero--image .hero__title{
  font-size:clamp(34px,4.6vw,60px);font-weight:800;line-height:1.14;
  letter-spacing:-1.6px;margin:0 0 20px;
  text-shadow:0 8px 34px rgba(0,0,0,.3);
}
.hero--image .hero__sub{
  font-size:clamp(17px,1.7vw,25px);line-height:1.6;font-weight:400;
  margin:0 0 36px;max-width:700px;color:rgba(255,255,255,.93);
  text-shadow:0 4px 22px rgba(0,0,0,.24);
}
.hero--image .hero__actions{gap:16px}
.hero--image .btn-lg{padding:16px 36px;font-size:16px;border-radius:var(--radius-pill)}
.hero__scroll{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;z-index:2;
  color:rgba(255,255,255,.72);font-size:12px;letter-spacing:2px;
}
.hero__scroll i{
  display:block;width:1px;height:34px;
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.7));
  animation:vk-scroll 1.8s ease-in-out infinite;
}
@keyframes vk-scroll{
  0%,100%{transform:scaleY(.4);opacity:.5}
  50%{transform:scaleY(1);opacity:1}
}

/* 卡片质感升级 */
.feature-card{
  padding:34px 26px;border-radius:18px;
  border:1px solid rgba(20,40,80,.06);
  box-shadow:0 2px 8px rgba(15,27,51,.04);
}
.feature-card__icon{
  width:56px;height:56px;font-size:26px;border-radius:18px;
  background:linear-gradient(135deg,hsla(var(--theme-color-hsl),.16),hsla(var(--theme-color-hsl),.05));
  margin-bottom:18px;
}
.feature-card__title{font-size:18px}
.course-card{border-radius:18px}
.course-card__title{font-size:17px}

/* 数据统计带 */
.section.stats-band{
  padding:56px 0;
  background:linear-gradient(180deg,#fff,#f5f8fd);
  border-bottom:1px solid var(--theme-line-color);
}
.stats-band__grid{display:grid;gap:18px;align-items:center}
.stats-band__item{
  text-align:center;padding:8px 12px;
  border-right:1px solid var(--theme-line-color);
}
.stats-band__item:last-child{border-right:0}
.stats-band__value{
  display:block;font-size:clamp(30px,3.4vw,46px);font-weight:800;line-height:1.05;
  letter-spacing:-1.2px;
  background:linear-gradient(135deg,var(--theme-color),#6b9cff);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  font-variant-numeric:tabular-nums;
}
.stats-band__label{display:block;margin-top:8px;font-size:14px;color:var(--vk-text-3);letter-spacing:.4px}
@media (max-width:767px){
  .section.stats-band{padding:34px 0}
  .stats-band__grid{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:12px}
  .stats-band__item{border-right:0;padding:10px 6px;background:rgba(255,255,255,.6);border-radius:12px}
  .stats-band__label{font-size:12px;margin-top:4px}
}

/* 深色游戏带：全宽铺满 */
.section--dark{
  padding:84px 0;
  background:
    radial-gradient(circle at 12% 8%,rgba(43,110,246,.38),transparent 46%),
    radial-gradient(circle at 88% 92%,rgba(7,193,160,.24),transparent 46%),
    #0b1526;
}
.section--dark .sec-title{color:#fff}
.sec-head--light .sec-title{color:#fff}

/* 全宽 CTA 带（去卡片化） */
.section.cta{
  padding:0;
  background:linear-gradient(115deg,#1B5FFA 0%,#3f7bff 52%,#07c160 100%);
}
.cta .container{padding-top:78px;padding-bottom:78px}
.cta__inner{padding:0;background:none;box-shadow:none;border-radius:0;overflow:visible}
.cta__inner::before{display:none}
.cta__title{font-size:clamp(24px,2.6vw,36px);font-weight:800;letter-spacing:-.8px}

/* 入场动画（尊重系统「减少动态效果」设置） */
@media (prefers-reduced-motion: no-preference){
  .vk-reveal{
    opacity:0;transform:translateY(22px);
    transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1);
    will-change:opacity,transform;
  }
  .vk-reveal.is-in{opacity:1;transform:none}
}

/* 首页响应式 */
@media (max-width:991px){
  .section,.front-content .features,.section--dark{padding:56px 0}
  .hero--image{min-height:min(78vh,700px)}
  .hero--image .hero__inner{padding-top:120px;padding-bottom:84px}
  .cta .container{padding-top:56px;padding-bottom:56px}
  .hero__scroll{display:none}
}
@media (max-width:767px){
  .section,.front-content .features,.section--dark{padding:42px 0}
  .hero--image{min-height:68vh}
  .hero--image .hero__inner{padding-top:104px;padding-bottom:64px}
  .hero--image .hero__title{letter-spacing:-.8px}
  .hero--image .hero__actions{flex-direction:column;align-items:stretch;gap:10px}
  .hero--image .btn-lg{width:100%;justify-content:center;padding:14px 24px}
  .sec-head{margin-bottom:26px}
}

/* 特色卡片列数：桌面用 --vk-cols，窄屏强制折叠（必须放在上方媒体查询之后） */
.features__grid{grid-template-columns:repeat(var(--vk-cols,4),minmax(0,1fr))}
@media (max-width:1239px){
  .features__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:991px){
  .features__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .features__grid{grid-template-columns:1fr}
}

/* 窄屏隐藏注册按钮，避免页头拥挤 */
@media (max-width:479px){
  .user-menu--guest .btn-primary{display:none}
  .hero--image .hero__title{font-size:28px}
  .hero--image .hero__sub{font-size:15px}
}

/* ==========================================================================
   27. 内页通栏（整站去除小工具侧栏）
   ========================================================================== */

.wrap--single{gap:0}
.entry--narrow{max-width:920px;margin:0 auto}
.post-nav--narrow{max-width:920px;margin-left:auto;margin-right:auto}
.entry--narrow .entry-content{font-size:16px}

/* 归档 / 列表页铺满内容区 */
.archive-list{margin-bottom:8px}
.archive-item{padding:22px 24px}
.archive-item__media{flex:0 0 220px}
.archive-item__title{font-size:19px}

/* 备案/页脚在通栏页面下保持居中 */
.footer--simple .footer-bottom--center{padding:28px 0}

/* 内页头图（通栏）稍微收一点高度，避免占屏 */
.page-hero{padding:52px 0 44px}

/* 内页 Banner：窄版图片头图 */
.page-hero--image{
  position:relative;display:flex;align-items:center;overflow:hidden;
  min-height:var(--vk-page-banner-h,280px);
  padding:0;border-bottom:0;
  background-color:#0d1728;background-size:cover;background-position:center;
  color:#fff;
}
.page-hero--image .page-hero__overlay{position:absolute;inset:0;z-index:0;display:block}
.page-hero--image .container{position:relative;z-index:1;padding-top:44px;padding-bottom:44px;width:100%}
.page-hero--image .page-hero__title{
  color:#fff;font-size:clamp(24px,3vw,38px);font-weight:800;letter-spacing:-.6px;
  margin:0;text-shadow:0 6px 28px rgba(0,0,0,.35);
}
.page-hero--image .page-hero__sub{
  color:rgba(255,255,255,.9);font-size:15px;margin:10px 0 0;
  text-shadow:0 4px 18px rgba(0,0,0,.3);
}
.page-hero--image .breadcrumb,
.page-hero--image .breadcrumb-list,
.page-hero--image .breadcrumb-item a,
.page-hero--image .breadcrumb-item span{color:rgba(255,255,255,.72)}
.page-hero--image .breadcrumb-item + .breadcrumb-item::before{color:rgba(255,255,255,.35)}
.page-hero--image .breadcrumb-item a:hover{color:#fff}
@media (max-width:767px){
  .page-hero--image{min-height:170px}
  .page-hero--image .container{padding-top:26px;padding-bottom:26px}
  .page-hero--image .page-hero__sub{font-size:13px;margin-top:6px}
}

/* 页面高度不足时把页脚压到底部（避免底部出现空白） */
body{display:flex;flex-direction:column;min-height:100vh}
.site-wrap{flex:1 0 auto}
.footer{flex-shrink:0}

@media (max-width:991px){
  .entry--narrow{max-width:100%}
  .archive-item{padding:18px}
  .archive-item__media{flex:0 0 150px}
  .page-hero{padding:36px 0 30px}
}
@media (max-width:767px){
  .archive-item__media{flex:0 0 110px}
  .page-hero{padding:28px 0 24px}
}

/* ==========================================================================
   28. 游戏列表页（浅色，和课程中心统一）
   ========================================================================== */
.section.game-archive{background:#f5f8fd;padding:44px 0 76px}
.section.game-archive .game-card{
  background:#fff;border:1px solid rgba(20,40,80,.07);color:var(--vk-text);
  box-shadow:0 2px 10px rgba(15,27,51,.05);
}
.section.game-archive .game-card:hover{
  background:#fff;color:var(--vk-text);
  border-color:hsla(var(--theme-color-hsl),.26);
  box-shadow:0 18px 40px rgba(15,27,51,.13);
}
.section.game-archive .game-card__media{background:#eef2f9}
.section.game-archive .game-card__title{color:var(--vk-text)}
.section.game-archive .game-card__meta{color:var(--vk-text-3)}
.section.game-archive .game-card__diff{color:#8a94a6}
.section.game-archive .game-card__play{background:rgba(15,27,51,.16)}
.section.game-archive .tag--dark{background:hsla(var(--theme-color-hsl),.1);color:var(--theme-color)}
.section.game-archive + .section{padding-top:0}

/* ==========================================================================
   29. 全站字号上调（首页与内页统一放大一档）
   ========================================================================== */
body{font-size:16px;line-height:1.75}

/* 页头 */
.main-menu > .menu-item > .menu-link{font-size:16px;padding:9px 15px}
.logo-text{font-size:20px}
.user-menu__name,.action-btn{font-size:15px}

/* 首页 Hero */
.hero--image .hero__title{font-size:clamp(38px,5vw,66px);letter-spacing:-1.8px;margin-bottom:22px}
.hero--image .hero__sub{font-size:clamp(19px,2vw,28px);line-height:1.65;margin-bottom:38px;max-width:760px}
.hero--image .btn-lg{padding:17px 38px;font-size:17px}
.hero__scroll{font-size:12px}

/* 区块标题与副标题 */
.sec-title{font-size:clamp(30px,3vw,44px)}
.sec-sub{font-size:17px;line-height:1.8}
.sec-more{font-size:15px}

/* 数据统计 */
.stats-band__value{font-size:clamp(34px,3.8vw,52px)}
.stats-band__label{font-size:15px}

/* 卡片 */
.feature-card__title{font-size:20px}
.feature-card__desc{font-size:15px;line-height:1.75}
.course-card__title{font-size:19px}
.course-card__desc,.course-card__meta{font-size:14px}
.course-card__price-now{font-size:20px}
.game-card__title{font-size:17px}
.game-card__meta{font-size:13px}

/* CTA */
.cta__title{font-size:clamp(28px,3vw,42px)}
.cta__desc{font-size:16px}

/* 列表页工具条 */
.course-toolbar__count,.course-toolbar__right .btn{font-size:15px}

/* 正文阅读 */
.entry-content{font-size:17px;line-height:1.9}
.entry-content h2{font-size:26px}
.entry-content h3{font-size:21px}
.entry-content p{margin-bottom:1.1em}

/* 内页头图 */
.page-hero__title{font-size:clamp(26px,3.2vw,42px)}
.page-hero__sub{font-size:16px}

@media (max-width:767px){
  body{font-size:15.5px}
  .hero--image .hero__title{font-size:30px;letter-spacing:-.6px}
  .hero--image .hero__sub{font-size:16px;margin-bottom:22px}
  .sec-title{font-size:24px}
  .sec-sub{font-size:14.5px}
  .feature-card__title{font-size:17px}
  .course-card__title{font-size:16px}
  .game-card__title{font-size:15.5px}
  .cta__title{font-size:22px}
  .entry-content{font-size:16px}
}