/* ========================================
   xy-050 体育企业模板 - 深石油蓝绿黑 + 荧光冰青绿→电光靛紫 电竞数据科技主题（仿 iecolink.com，去全覆盖广告）
   仿 iecolink.com 架构（去除全覆盖广告，文案净化为资讯向，3栏目）
   版式：网格背景居中Hero(全景赛场+双入口) → 实时比分滚动条 → 五大功能专区矩阵(体育赛事/多端互动/战术演练/电竞数据/资讯中心) → 3栏目
        → 头条战报 → 精选推荐 → 版本演进垂直时间线 → App展示区 → 球迷评价 → 排行/标签 → 关于 → FAQ时间线 → CTA
   ======================================== */
:root {
    /* xy-050 深石油蓝绿黑 + 荧光冰青绿→电光靛紫 电竞数据科技主题
       （变量名沿用 --lava/--amber/--cyan 以免破坏 300+ 引用，值已重映射：--lava=靛紫、--cyan=冰青绿） */
    --bg: #071a17;
    --bg-alt: #0c2420;
    --surface: #10302a;
    --surface-2: #164038;
    --lava: #6366f1;
    --lava-2: #4f46e5;
    --amber: #a5b4fc;
    --cyan: #2dd4bf;
    --grad: linear-gradient(135deg, #2dd4bf 0%, #6366f1 100%);
    --text: #eafaf6;
    --text-light: #9dc4bb;
    --muted: #6f948c;
    --border: rgba(45,212,191,.16);
    --shadow: 0 12px 34px rgba(0,0,0,.5);
    --radius: 18px;
    --radius-sm: 10px;
    --transition: all .3s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--text); line-height: 1.7; background: var(--bg); }
a { color: var(--text); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--lava); }
img { max-width: 100%; height: auto; }
.xy50-container-sm { max-width: 900px; }
.position-relative { position: relative; }

/* ===== Buttons ===== */
.xy50-btn { display: inline-flex; align-items: center; gap: 8px; background: var(--grad); color: #fff; padding: 13px 30px; border-radius: 30px; font-weight: 800; font-size: .95rem; border: none; cursor: pointer; box-shadow: 0 8px 24px rgba(99,102,241,.32); }
.xy50-btn:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 12px 30px rgba(165,180,252,.45); }
.xy50-btn-ghost { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--text); padding: 13px 30px; border-radius: 30px; font-weight: 700; font-size: .95rem; border: 1.5px solid var(--border); }
.xy50-btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-2px); }

/* ===== Topbar ===== */
.xy50-topbar { background: #04100d; border-bottom: 1px solid var(--border); font-size: .8rem; color: var(--text-light); }
.xy50-topbar-inner { display: flex; align-items: center; justify-content: space-between; padding: 8px 0; gap: 14px; }
.xy50-topbar-info i { color: var(--lava); margin-right: 6px; }
.xy50-topbar-links { display: flex; gap: 18px; }
.xy50-topbar-links a { color: var(--text-light); }
.xy50-topbar-links a:hover { color: var(--lava); }
.xy50-topbar-links i { margin-right: 5px; color: var(--cyan); }

/* ===== Header ===== */
.xy50-header { background: rgba(7,26,23,.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 1000; }
.xy50-header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 16px; }
.xy50-logo { display: inline-flex; align-items: center; gap: 11px; }
.xy50-logo-badge { width: 42px; height: 42px; border-radius: 13px; background: var(--grad); display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 18px rgba(99,102,241,.4); flex: 0 0 auto; }
.xy50-logo-badge i { color: #fff; font-size: 1.2rem; }
.xy50-logo-text { color: #fff; font-size: 1.24rem; font-weight: 800; white-space: nowrap; letter-spacing: .5px; }
.xy50-logo mip-img { height: 42px; width: auto; }
.xy50-nav { display: flex; align-items: center; gap: 4px; }
.xy50-nav .nav-link { color: var(--text-light); padding: 8px 15px; border-radius: var(--radius-sm); font-size: .93rem; font-weight: 600; }
.xy50-nav .nav-link:hover, .xy50-nav .nav-link.active { color: #fff; background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--border); }
.xy50-nav-cta { display: inline-flex; align-items: center; gap: 7px; margin-left: 10px; background: var(--grad); color: #fff; padding: 9px 20px; border-radius: 22px; font-weight: 700; font-size: .88rem; }
.xy50-nav-cta:hover { color: #fff; transform: translateY(-1px); }
.xy50-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }

/* ===== Hero (left-aligned split) ===== */
/* ===== Centered Hero (full-bleed arena backdrop) ===== */
.xy50-hero { position: relative; overflow: hidden; padding: 128px 0 100px; text-align: center; background: var(--bg); display: flex; align-items: center; }
.xy50-hero-bg { position: absolute; inset: 0; z-index: 0; }
.xy50-hero-bg mip-img, .xy50-hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.xy50-hero-mask { position: absolute; inset: 0; z-index: 1; background: linear-gradient(180deg, rgba(7,26,23,.86) 0%, rgba(7,26,23,.72) 46%, var(--bg) 100%); }
.xy50-hero .container { position: relative; z-index: 2; }
.xy50-hc { max-width: 840px; margin: 0 auto; }
.xy50-hc-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(99,102,241,.16); border: 1px solid var(--border); color: var(--lava); padding: 8px 22px; border-radius: 24px; font-size: .84rem; margin-bottom: 24px; font-weight: 700; letter-spacing: .3px; }
.xy50-hc-badge i { color: var(--cyan); }
.xy50-hc-title { font-size: 3.4rem; font-weight: 900; line-height: 1.14; margin-bottom: 20px; color: #fff; text-shadow: 0 6px 30px rgba(0,0,0,.55); }
.xy50-hc-sub { font-size: 1.1rem; color: #d6e6e2; margin: 0 auto 32px; max-width: 640px; }
.xy50-hc-cta { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; margin-bottom: 34px; }
.xy50-hc-chips { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.xy50-hc-chip { display: inline-flex; align-items: center; gap: 7px; background: rgba(16,48,42,.7); border: 1px solid var(--border); color: var(--text-light); padding: 9px 16px; border-radius: 20px; font-size: .82rem; font-weight: 600; }
.xy50-hc-chip i { color: var(--cyan); }
.xy50-live-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--lava); box-shadow: 0 0 0 0 rgba(99,102,241,.6); animation: xy50Pulse 1.6s infinite; flex: 0 0 auto; }
@keyframes xy50Pulse { 0% { box-shadow: 0 0 0 0 rgba(99,102,241,.6); } 70% { box-shadow: 0 0 0 12px rgba(99,102,241,0); } 100% { box-shadow: 0 0 0 0 rgba(99,102,241,0); } }

/* ===== Live ticker ===== */
.xy50-ticker { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 20px 0; }
.xy50-ticker-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.xy50-tick { display: flex; align-items: center; gap: 12px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 16px; }
.xy50-tick-tag { flex: 0 0 auto; font-size: .68rem; font-weight: 800; padding: 3px 9px; border-radius: 6px; color: #fff; letter-spacing: .5px; }
.xy50-tick-tag.live { background: var(--lava); }
.xy50-tick-tag.soon { background: var(--cyan); color: #06231f; }
.xy50-tick-tag.end { background: var(--surface-2); color: var(--text-light); }
.xy50-tick-body { flex: 1; min-width: 0; }
.xy50-tick-body b { display: block; color: #fff; font-size: .88rem; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.xy50-tick-body span { font-size: .76rem; color: var(--muted); }
.xy50-tick-score { flex: 0 0 auto; color: var(--amber); font-weight: 800; font-size: .98rem; }

/* ===== Sections ===== */
.xy50-sec { padding: 72px 0; }
.xy50-sec-alt { background: var(--bg-alt); }
.xy50-sec-head { text-align: center; max-width: 700px; margin: 0 auto 46px; }
.xy50-kicker { display: inline-block; color: var(--lava); font-size: .78rem; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 10px; }
.xy50-sec-head h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.xy50-sec-head p { color: var(--text-light); }
.xy50-bar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 30px; padding-bottom: 14px; border-bottom: 2px solid var(--border); }
.xy50-bar h2 { font-size: 1.5rem; font-weight: 800; color: #fff; }
.xy50-bar h2 i { color: var(--lava); margin-right: 8px; }
.xy50-more { color: var(--cyan); font-weight: 700; font-size: .9rem; }
.xy50-more:hover { color: var(--lava); }
.xy50-meta { color: var(--muted); font-size: .8rem; }
.xy50-meta i { color: var(--lava); margin-right: 4px; }

/* ===== Features ===== */
.xy50-feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.xy50-feat-card { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; overflow: hidden; transition: var(--transition); }
.xy50-feat-card::before { content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .35s ease; }
.xy50-feat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--lava); }
.xy50-feat-card:hover::before { transform: scaleX(1); }
.xy50-feat-icon { width: 58px; height: 58px; border-radius: 16px; background: var(--lava-soft); color: var(--lava); display: flex; align-items: center; justify-content: center; font-size: 1.55rem; margin-bottom: 20px; border: 1px solid var(--border); transition: var(--transition); }
.xy50-feat-card:hover .xy50-feat-icon { background: var(--grad); color: #fff; }
.xy50-feat-card h3 { font-size: 1.14rem; font-weight: 800; color: #fff; margin-bottom: 10px; }
.xy50-feat-card p { color: var(--text-light); font-size: .88rem; }
/* why-us matrix + primary main card */
.xy50-why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.xy50-feat-main { position: relative; background: var(--grad); border-radius: var(--radius); padding: 32px 24px; color: #071a17; overflow: hidden; display: flex; flex-direction: column; box-shadow: 0 14px 34px rgba(99,102,241,.22); }
.xy50-feat-main .xy50-feat-icon { background: rgba(7,26,23,.16); color: #071a17; border-color: rgba(7,26,23,.22); }
.xy50-feat-main h3 { color: #071a17; font-size: 1.14rem; font-weight: 800; margin-bottom: 10px; }
.xy50-feat-main p { color: rgba(7,26,23,.82); font-size: .88rem; flex: 1; }
.xy50-feat-main-link { margin-top: 16px; display: inline-flex; align-items: center; gap: 8px; color: #071a17; font-weight: 800; font-size: .9rem; }

/* ===== Category zones ===== */
.xy50-catz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.xy50-cat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.xy50-cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--lava); }
.xy50-cat-media { position: relative; overflow: hidden; aspect-ratio: 800/560; }
.xy50-cat-media mip-img { width: 100%; height: 100%; transition: transform .5s ease; }
.xy50-cat-card:hover .xy50-cat-media mip-img { transform: scale(1.06); }
.xy50-cat-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(4,16,13,.05) 30%, rgba(4,16,13,.72) 100%); }
.xy50-cat-no { position: absolute; top: 14px; left: 16px; font-size: 1rem; font-weight: 800; color: #fff; background: rgba(4,16,13,.55); padding: 3px 12px; border-radius: 20px; z-index: 2; }
.xy50-cat-icon { position: absolute; bottom: -26px; right: 22px; width: 54px; height: 54px; border-radius: 16px; background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; box-shadow: 0 6px 18px rgba(99,102,241,.4); z-index: 2; }
.xy50-cat-body { padding: 22px; position: relative; }
.xy50-cat-body h3 { font-size: 1.22rem; font-weight: 800; color: #fff; margin-bottom: 8px; }
.xy50-cat-card:hover h3 { color: var(--lava); }
.xy50-cat-body p { color: var(--text-light); font-size: .88rem; margin-bottom: 14px; }
.xy50-cat-more { color: var(--cyan); font-weight: 700; font-size: .86rem; }

/* ===== Two panels ===== */
.xy50-panel-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.xy50-panel { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); min-height: 300px; display: flex; align-items: flex-end; transition: var(--transition); }
.xy50-panel:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--lava); }
.xy50-panel-media { position: absolute; inset: 0; }
.xy50-panel-media mip-img { width: 100%; height: 100%; object-fit: cover; }
.xy50-panel-shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(4,16,13,.25) 20%, rgba(4,16,13,.92) 100%); }
.xy50-panel-body { position: relative; z-index: 2; padding: 30px; }
.xy50-panel-icon { width: 50px; height: 50px; border-radius: 14px; background: var(--grad); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; margin-bottom: 16px; }
.xy50-panel-body h3 { color: #fff; font-size: 1.3rem; font-weight: 800; margin-bottom: 10px; }
.xy50-panel-body p { color: var(--text-light); font-size: .9rem; margin-bottom: 16px; }
.xy50-panel-link { color: var(--cyan); font-weight: 700; font-size: .9rem; }
.xy50-panel-link:hover { color: #fff; }

/* ===== Featured news ===== */
.xy50-feature-wrap { display: grid; grid-template-columns: 1.5fr 1fr; gap: 22px; }
.xy50-feature-big { grid-row: 1 / span 4; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: var(--transition); }
.xy50-feature-big:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--lava); }
.xy50-feature-big-media { position: relative; overflow: hidden; }
.xy50-feature-big-media mip-img { width: 100%; }
.xy50-feature-flag { position: absolute; top: 14px; left: 14px; background: var(--grad); color: #fff; font-size: .76rem; font-weight: 800; padding: 5px 14px; border-radius: 20px; }
.xy50-feature-big-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.xy50-feature-big-body h3 { font-size: 1.32rem; font-weight: 800; color: #fff; line-height: 1.4; margin-bottom: 10px; }
.xy50-feature-big:hover h3 { color: var(--lava); }
.xy50-feature-big-body p { color: var(--text-light); font-size: .9rem; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.xy50-feature-row { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; display: flex; align-items: center; gap: 14px; transition: var(--transition); }
.xy50-feature-row:hover { border-color: var(--cyan); background: var(--surface-2); }
.xy50-feature-idx { flex: 0 0 40px; height: 40px; border-radius: 12px; background: var(--surface-2); color: var(--lava); font-weight: 800; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; }
.xy50-feature-row-body h4 { font-size: .98rem; font-weight: 700; color: var(--text); line-height: 1.45; margin-bottom: 5px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.xy50-feature-row:hover h4 { color: #fff; }

/* ===== Grid cards ===== */
.xy50-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.xy50-grid-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
.xy50-grid-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--lava); }
.xy50-grid-img { position: relative; display: block; overflow: hidden; aspect-ratio: 400/260; }
.xy50-grid-img mip-img { width: 100%; height: 100%; }
.xy50-grid-badge { position: absolute; top: 12px; left: 12px; background: var(--grad); color: #fff; font-size: .74rem; font-weight: 800; padding: 4px 12px; border-radius: 20px; }
.xy50-grid-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.xy50-grid-body h3 { font-size: 1.05rem; font-weight: 700; line-height: 1.5; margin-bottom: 10px; }
.xy50-grid-body h3 a { color: #fff; }
.xy50-grid-body h3 a:hover { color: var(--lava); }
.xy50-grid-body p { color: var(--text-light); font-size: .88rem; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.xy50-grid-meta { display: flex; gap: 16px; color: var(--muted); font-size: .8rem; border-top: 1px solid var(--border); padding-top: 12px; }
.xy50-grid-meta i { margin-right: 5px; color: var(--cyan); }

/* ===== Stats band ===== */
.xy50-band { background: var(--grad); padding: 62px 0; }
.xy50-band-head { text-align: center; max-width: 680px; margin: 0 auto 40px; }
.xy50-band-head .xy50-kicker { color: rgba(7,26,23,.66); }
.xy50-band-head h2 { color: #071a17; font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.xy50-band-head p { color: rgba(7,26,23,.78); font-size: .95rem; margin: 0; }
.xy50-band-row { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 26px; }
.xy50-band-item { display: flex; align-items: center; gap: 14px; color: #071a17; }
.xy50-band-item > i { font-size: 2rem; opacity: .85; color: #071a17; }
.xy50-band-item b { display: block; font-size: 1.9rem; font-weight: 800; line-height: 1.1; color: #071a17; }
.xy50-band-item span { font-size: .86rem; color: rgba(7,26,23,.8); }

/* ===== Testimonials ===== */
.xy50-testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.xy50-testi-card { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px 26px; transition: var(--transition); }
.xy50-testi-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--cyan); }
.xy50-testi-quote { color: var(--lava); font-size: 1.6rem; opacity: .5; margin-bottom: 12px; }
.xy50-testi-card > p { color: var(--text-light); font-size: .92rem; margin-bottom: 22px; }
.xy50-testi-user { display: flex; align-items: center; gap: 14px; }
.xy50-testi-user mip-img { width: 50px; height: 50px; border-radius: 50%; overflow: hidden; flex: 0 0 auto; border: 2px solid var(--border); }
.xy50-testi-user b { display: block; color: #fff; font-size: .96rem; font-weight: 700; }
.xy50-testi-user span { font-size: .8rem; color: var(--muted); }

/* ===== Two col ===== */
.xy50-two-col { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.xy50-side-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; }
.xy50-side-head { font-size: 1.2rem; font-weight: 800; color: #fff; margin-bottom: 20px; padding-bottom: 14px; border-bottom: 2px solid var(--border); }
.xy50-side-head i { color: var(--lava); margin-right: 8px; }
.xy50-rank { list-style: none; }
.xy50-rank li { display: flex; align-items: center; gap: 12px; padding: 11px 0; border-bottom: 1px dashed var(--border); }
.xy50-rank li:last-child { border-bottom: none; }
.xy50-rank-no { flex: 0 0 26px; height: 26px; border-radius: 8px; background: var(--surface-2); color: var(--text-light); font-size: .8rem; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.xy50-rank li:nth-child(1) .xy50-rank-no, .xy50-rank li:nth-child(2) .xy50-rank-no, .xy50-rank li:nth-child(3) .xy50-rank-no { background: var(--grad); color: #fff; }
.xy50-rank a { color: var(--text); font-size: .92rem; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.xy50-rank a:hover { color: var(--lava); }
.xy50-tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.xy50-tag-cloud a { background: var(--surface-2); color: var(--text-light); padding: 7px 15px; border-radius: 20px; font-size: .84rem; border: 1px solid var(--border); }
.xy50-tag-cloud a:hover { background: var(--grad); color: #fff; border-color: transparent; }
.xy50-icon-accent { color: var(--lava); }

/* ===== About ===== */
.xy50-about { padding: 78px 0; background: linear-gradient(135deg, #10281f 0%, var(--bg) 100%); }
.xy50-about-row { display: flex; align-items: center; gap: 50px; }
.xy50-about-media { flex: 1 1 46%; position: relative; }
.xy50-about-media mip-img { border-radius: 22px; overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); }
.xy50-about-badge { position: absolute; bottom: -18px; right: 18px; display: inline-flex; align-items: center; gap: 9px; background: var(--grad); color: #fff; font-weight: 700; font-size: .88rem; padding: 12px 22px; border-radius: 30px; box-shadow: var(--shadow); }
.xy50-about-text { flex: 1 1 54%; }
.xy50-about-text h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.xy50-lead { color: var(--text-light); margin-bottom: 24px; }
.xy50-check { list-style: none; margin-bottom: 28px; }
.xy50-check li { position: relative; padding-left: 32px; margin-bottom: 14px; color: var(--text); font-size: .95rem; }
.xy50-check li i { position: absolute; left: 0; top: 2px; width: 20px; height: 20px; border-radius: 50%; background: var(--lava-soft); color: var(--lava); font-size: .66rem; display: flex; align-items: center; justify-content: center; }

/* ===== FAQ ===== */
.xy50-faq { display: grid; grid-template-columns: 1fr; gap: 16px; }
.xy50-faq-item { display: flex; gap: 20px; align-items: flex-start; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; border-left: 3px solid var(--lava); transition: var(--transition); }
.xy50-faq-item:hover { transform: translateX(4px); box-shadow: var(--shadow); }
.xy50-faq-step { flex: 0 0 auto; width: 46px; height: 46px; border-radius: 13px; background: var(--grad); color: #071a17; font-weight: 800; font-size: 1.05rem; display: flex; align-items: center; justify-content: center; }
.xy50-faq-body b { display: block; color: #fff; font-size: 1.02rem; margin-bottom: 8px; }
.xy50-faq-body p { color: var(--text-light); font-size: .9rem; margin: 0; }

/* ===== CTA ===== */
.xy50-cta { background: linear-gradient(135deg, #10281f, var(--bg)); padding: 62px 0; border-top: 1px solid var(--border); }
.xy50-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.xy50-cta h2 { color: #fff; font-size: 1.9rem; font-weight: 800; margin-bottom: 8px; }
.xy50-cta p { color: var(--text-light); }

/* ===== Footer ===== */
.xy50-footer { background: #04100d; color: var(--text-light); padding-top: 46px; border-top: 1px solid var(--border); }
.xy50-footer-brand-row { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 30px; margin-bottom: 44px; }
.xy50-footer-brand { display: flex; align-items: center; gap: 16px; flex: 1 1 340px; }
.xy50-footer-brand h3 { color: #fff; font-size: 1.24rem; font-weight: 800; margin-bottom: 4px; }
.xy50-footer-brand p { color: var(--text-light); font-size: .86rem; margin: 0; max-width: 420px; }
.xy50-footer-news { flex: 1 1 340px; }
.xy50-footer-news label { display: block; color: #fff; font-size: .9rem; font-weight: 700; margin-bottom: 10px; }
.xy50-footer-news label i { color: var(--lava); margin-right: 6px; }
.xy50-footer-news-row { display: flex; border-radius: 26px; overflow: hidden; border: 1px solid var(--border); }
.xy50-footer-news-row input { flex: 1; border: none; outline: none; background: var(--surface-2); color: var(--text); padding: 12px 18px; font-size: .88rem; min-width: 0; }
.xy50-footer-news-row input::placeholder { color: var(--muted); }
.xy50-footer-news-row button { background: var(--grad); border: none; color: #fff; font-weight: 800; padding: 0 22px; cursor: pointer; font-size: .88rem; }
.xy50-footer-top { display: grid; grid-template-columns: 1fr 1fr 1.3fr 1.4fr; gap: 34px; padding-bottom: 38px; border-bottom: 1px solid var(--border); }
.xy50-footer-col h4 { color: #fff; font-size: 1.02rem; font-weight: 700; margin-bottom: 18px; position: relative; padding-bottom: 10px; }
.xy50-footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--grad); }
.xy50-footer-desc { font-size: .86rem; margin-bottom: 12px; }
.xy50-footer-col ul { list-style: none; }
.xy50-footer-col ul li { margin-bottom: 10px; }
.xy50-footer-col ul a { color: var(--text-light); font-size: .88rem; }
.xy50-footer-col ul a:hover { color: var(--lava); }
.xy50-footer-col ul a i { margin-right: 8px; color: var(--cyan); font-size: .72rem; }
.xy50-footer-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.xy50-footer-tags a { background: var(--surface); border: 1px solid var(--border); color: var(--text-light); padding: 5px 12px; border-radius: 16px; font-size: .8rem; }
.xy50-footer-tags a:hover { background: var(--grad); color: #fff; border-color: transparent; }
.xy50-footer-social { display: flex; gap: 12px; margin-top: 14px; }
.xy50-footer-social a { width: 38px; height: 38px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); color: var(--text-light); display: flex; align-items: center; justify-content: center; }
.xy50-footer-social a:hover { background: var(--grad); color: #fff; border-color: transparent; }
.xy50-footer-bottom { padding: 22px 0; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.xy50-footer-links { display: flex; flex-wrap: wrap; gap: 18px; justify-content: center; }
.xy50-footer-links a { color: var(--muted); font-size: .84rem; }
.xy50-footer-links a:hover { color: var(--lava); }
.xy50-footer-bottom span { font-size: .82rem; color: var(--muted); }

/* ===== Category page banner ===== */
.xy50-page-banner { position: relative; height: 300px; overflow: hidden; display: flex; align-items: center; }
.xy50-banner-bg { position: absolute; inset: 0; }
.xy50-banner-bg mip-img { width: 100%; height: 100%; object-fit: cover; }
.xy50-banner-mask { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(7,26,23,.94), rgba(16,48,42,.72)); }
.xy50-banner-kicker { position: relative; display: inline-block; color: var(--lava); font-size: .78rem; font-weight: 800; letter-spacing: 2px; margin-bottom: 8px; }
.xy50-page-banner h1 { position: relative; color: #fff; font-size: 2.2rem; font-weight: 800; margin-bottom: 8px; }
.xy50-banner-sub { position: relative; color: var(--text-light); font-size: 1rem; }
.xy50-crumb { padding: 18px 0; color: var(--text-light); font-size: .88rem; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.xy50-crumb > i.fa-map-marker-alt { color: var(--lava); }
.xy50-crumb a { color: var(--text-light); }
.xy50-crumb a:hover { color: var(--lava); }
.xy50-crumb span { color: #fff; font-weight: 600; }
.xy50-crumb i.fa-angle-right { font-size: .7rem; color: var(--muted); }
.xy50-page-banner + .container .xy50-grid-3 { margin-bottom: 40px; }

/* ===== Pagination ===== */
.xy50-pager { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; padding: 36px 0 10px; }
.xy50-pager a, .xy50-pager span { min-width: 40px; height: 40px; padding: 0 14px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); color: var(--text-light); display: inline-flex; align-items: center; justify-content: center; font-size: .9rem; font-weight: 600; }
.xy50-pager a:hover { border-color: var(--lava); color: var(--lava); }
.xy50-pager .current, .xy50-pager span.active { background: var(--grad); border-color: transparent; color: #fff; }

/* ===== Detail ===== */
.xy50-detail { max-width: 920px; margin: 0 auto; padding: 42px 16px 60px; }
.xy50-detail-title { font-size: 1.9rem; font-weight: 800; color: #fff; line-height: 1.4; margin-bottom: 18px; }
.xy50-detail-meta { display: flex; flex-wrap: wrap; gap: 18px; color: var(--text-light); font-size: .85rem; padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 26px; }
.xy50-detail-meta i { color: var(--lava); margin-right: 6px; }
.xy50-detail-meta a { color: var(--text-light); }
.xy50-detail-meta a:hover { color: var(--lava); }
.xy50-detail-content { font-size: 1.02rem; color: #ded4ca; line-height: 1.95; }
.xy50-detail-content p { margin-bottom: 18px; }
.xy50-detail-content img, .xy50-detail-content mip-img { border-radius: 12px; margin: 14px 0; }
.xy50-detail-content h2, .xy50-detail-content h3 { color: #fff; font-weight: 700; margin: 26px 0 14px; }
.xy50-detail-content a { color: var(--lava); }
.xy50-img-count { text-align: center; color: var(--muted); font-size: .88rem; }
.xy50-detail-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; padding-top: 24px; border-top: 1px dashed var(--border); }
.xy50-detail-tags a { background: var(--surface-2); color: var(--lava); padding: 6px 15px; border-radius: 20px; font-size: .84rem; border: 1px solid var(--border); }
.xy50-detail-tags a:hover { background: var(--grad); color: #fff; border-color: transparent; }
.xy50-related { margin-top: 46px; }
.xy50-related-title { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 22px; }
.xy50-related-title i { color: var(--lava); margin-right: 8px; }

/* ===== Article list block ===== */
.xy50-list-item { display: flex; gap: 18px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; padding: 14px; margin-bottom: 18px; transition: var(--transition); }
.xy50-list-item:hover { box-shadow: var(--shadow); border-color: var(--lava); transform: translateX(4px); }
.xy50-item-media { flex: 0 0 200px; border-radius: var(--radius-sm); overflow: hidden; }
.xy50-item-content h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.xy50-item-content h3 a { color: #fff; }
.xy50-item-content h3 a:hover { color: var(--lava); }
.xy50-item-content p { color: var(--text-light); font-size: .88rem; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.xy50-item-date { color: var(--muted); font-size: .8rem; }
.xy50-item-date i { color: var(--cyan); margin-right: 5px; }
.xy50-sidebar-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 22px; }
.xy50-sidebar-box h3 { font-size: 1.1rem; font-weight: 800; color: #fff; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.xy50-sidebar-box h3 i { margin-right: 8px; color: var(--lava); }

/* ===== Search / so ===== */
.xy50-so { max-width: 920px; margin: 0 auto; padding: 46px 16px 60px; }
.xy50-so-top { text-align: center; margin-bottom: 34px; }
.xy50-so-top h1 { font-size: 1.9rem; font-weight: 800; color: #fff; margin-bottom: 10px; }
.xy50-so-top h1 i { color: var(--lava); }
.xy50-so-top p { color: var(--text-light); margin-bottom: 20px; }
.xy50-so-form { display: flex; max-width: 520px; margin: 0 auto; border-radius: 30px; overflow: hidden; border: 1px solid var(--border); }
.xy50-so-input { flex: 1; border: none; outline: none; background: var(--surface); padding: 13px 22px; font-size: .95rem; color: var(--text); }
.xy50-so-input::placeholder { color: var(--muted); }
.xy50-so-form .xy50-btn { border-radius: 0; padding: 13px 26px; }
.xy50-so-info { background: var(--lava-soft); border: 1px solid var(--border); color: var(--text); padding: 12px 20px; border-radius: var(--radius-sm); margin-bottom: 24px; font-size: .92rem; }
.xy50-so-info strong { color: var(--lava); }
.xy50-so-items { display: flex; flex-direction: column; gap: 16px; }
.xy50-so-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 24px; border-left: 3px solid var(--lava); transition: var(--transition); }
.xy50-so-card:hover { box-shadow: var(--shadow); transform: translateX(4px); }
.xy50-so-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.xy50-so-card h3 a { color: #fff; }
.xy50-so-card h3 a:hover { color: var(--lava); }
.xy50-so-card p { color: var(--text-light); font-size: .9rem; margin-bottom: 0; }
.xy50-so-hot { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; }
.xy50-so-hot h4 { color: #fff; font-weight: 800; margin-bottom: 18px; }
.xy50-so-hot h4 i { color: var(--lava); margin-right: 8px; }
.xy50-so-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.xy50-so-tags a { background: var(--surface-2); color: var(--text-light); padding: 7px 16px; border-radius: 20px; font-size: .85rem; border: 1px solid var(--border); }
.xy50-so-tags a:hover { background: var(--grad); color: #fff; border-color: transparent; }

/* ===== Tag page ===== */
.xy50-tag-cloud-lg { justify-content: center; gap: 12px; }
.xy50-tag-chip { background: var(--surface); border: 1px solid var(--border); color: var(--text); padding: 10px 20px; border-radius: 24px; font-size: .92rem; }
.xy50-tag-chip i { color: var(--lava); margin-right: 6px; }
.xy50-tag-chip:hover { background: var(--grad); color: #fff; border-color: transparent; }
.xy50-tag-chip:hover i { color: #fff; }

/* ===== App showcase ===== */
.xy50-app { position: relative; overflow: hidden; padding: 80px 0; background: linear-gradient(135deg, var(--surface) 0%, var(--bg-alt) 100%); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.xy50-app::after { content: ""; position: absolute; right: -130px; top: -130px; width: 380px; height: 380px; border-radius: 50%; background: radial-gradient(circle, rgba(45,212,191,.16), transparent 70%); pointer-events: none; }
.xy50-app-row { display: flex; align-items: center; gap: 56px; position: relative; z-index: 2; }
.xy50-app-text { flex: 1 1 54%; }
.xy50-app-text h2 { color: #fff; font-size: 2.1rem; font-weight: 800; margin-bottom: 16px; }
.xy50-app-list { list-style: none; margin: 24px 0 30px; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.xy50-app-list li { color: var(--text-light); font-size: .92rem; display: flex; align-items: center; gap: 10px; }
.xy50-app-list li i { color: var(--cyan); font-size: 1.05rem; }
.xy50-app-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.xy50-app-media { flex: 1 1 40%; position: relative; max-width: 380px; margin: 0 auto; }
.xy50-app-media mip-img { border-radius: 22px; border: 1px solid var(--border); box-shadow: var(--shadow); }
.xy50-app-rate { position: absolute; left: -30px; bottom: 28px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 16px; padding: 14px 20px; box-shadow: var(--shadow); text-align: center; }
.xy50-app-rate b { display: block; font-size: 1.8rem; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; line-height: 1.1; }
.xy50-app-rate span i { color: var(--lava); font-size: .78rem; }
.xy50-app-rate em { display: block; font-style: normal; font-size: .74rem; color: var(--muted); margin-top: 4px; }

/* ===== Responsive ===== */
@media (max-width: 991px) {
    .xy50-hero { padding: 92px 0 72px; }
    .xy50-hc-title { font-size: 2.4rem; }
    .xy50-app-row { flex-direction: column; gap: 46px; }
    .xy50-app-list { grid-template-columns: 1fr; }
    .xy50-ticker-row { grid-template-columns: repeat(2, 1fr); }
    .xy50-catz-grid, .xy50-grid-3, .xy50-testi-grid { grid-template-columns: repeat(2, 1fr); }
    .xy50-feat-grid, .xy50-why-grid { grid-template-columns: repeat(2, 1fr); }
    .xy50-panel-row, .xy50-feature-wrap, .xy50-two-col { grid-template-columns: 1fr; }
    .xy50-feature-big { grid-row: auto; }
    .xy50-about-row { flex-direction: column; gap: 54px; }
    .xy50-footer-top { grid-template-columns: repeat(2, 1fr); }
    .xy50-toggle { display: block; }
    .xy50-nav { position: absolute; top: 100%; left: 0; right: 0; background: #04100d; flex-direction: column; align-items: stretch; padding: 12px; gap: 6px; display: none; border-bottom: 1px solid var(--border); }
    .xy50-nav.show { display: flex; }
    .xy50-nav .nav-link { padding: 12px 14px; }
    .xy50-nav-cta { margin: 8px 0 0; justify-content: center; }
    .xy50-topbar-info { display: none; }
    .xy50-topbar-inner { justify-content: center; }
}
@media (max-width: 640px) {
    .xy50-sec { padding: 50px 0; }
    .xy50-hc-title { font-size: 1.9rem; }
    .xy50-hc-sub { font-size: .98rem; }
    .xy50-app-media { max-width: 260px; }
    .xy50-app-rate { left: -14px; padding: 10px 14px; }
    .xy50-ticker-row, .xy50-catz-grid, .xy50-grid-3, .xy50-feat-grid, .xy50-why-grid, .xy50-two-col, .xy50-faq, .xy50-testi-grid { grid-template-columns: 1fr; }
    .xy50-hero-img-sub { display: none; }
    .xy50-hero-float { right: 8px; top: 8px; padding: 9px 13px; }
    .xy50-footer-top, .xy50-footer-brand-row { grid-template-columns: 1fr; flex-direction: column; align-items: stretch; }
    .xy50-band-row { gap: 22px; }
    .xy50-band-item b { font-size: 1.5rem; }
    .xy50-cta-inner { flex-direction: column; text-align: center; }
    .xy50-list-item { flex-direction: column; }
    .xy50-item-media { flex: 0 0 auto; }
    .xy50-detail-title { font-size: 1.5rem; }
    .xy50-page-banner { height: 220px; }
    .xy50-page-banner h1 { font-size: 1.6rem; }
}

/* ============ xy-050 特色组件 A: 五大功能专区矩阵 zones（仿 iecolink 五专区标签切换，MIP 无 JS 约束改卡片矩阵） ============ */
.xy50-zones { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.xy50-zone { position: relative; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px 18px; text-align: center;
  transition: var(--transition); overflow: hidden; }
.xy50-zone::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); opacity: 0; transition: var(--transition); }
.xy50-zone:hover { transform: translateY(-6px); border-color: rgba(45,212,191,.4); }
.xy50-zone:hover::after { opacity: 1; }
.xy50-zone-ico { width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
  color: #04100d; background: var(--grad); }
.xy50-zone h3 { font-size: 16px; color: #fff; font-weight: 700; margin-bottom: 8px; }
.xy50-zone p { color: var(--text-light); font-size: 12.5px; line-height: 1.65; }
.xy50-zone-no { position: absolute; top: 10px; right: 12px; font-size: 22px; font-weight: 800;
  color: rgba(45,212,191,.14); }

/* ============ xy-050 特色组件 B: 版本演进垂直时间线 vtl（仿 iecolink 功能模块更新·版本演进） ============ */
.xy50-vtl { position: relative; max-width: 760px; margin: 0 auto; padding-left: 34px; }
.xy50-vtl::before { content: ''; position: absolute; left: 10px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, #2dd4bf 0%, #6366f1 100%); }
.xy50-vtl-item { position: relative; margin-bottom: 26px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; }
.xy50-vtl-item::before { content: ''; position: absolute; left: -30px; top: 26px;
  width: 12px; height: 12px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(45,212,191,.18); }
.xy50-vtl-item.latest::before { background: var(--lava); box-shadow: 0 0 0 4px rgba(99,102,241,.22); }
.xy50-vtl-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.xy50-vtl-ver { font-size: 17px; font-weight: 800; background: var(--grad);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.xy50-vtl-date { color: var(--muted); font-size: 12px; }
.xy50-vtl-tag { font-size: 11px; padding: 3px 10px; border-radius: 999px;
  background: rgba(45,212,191,.12); color: var(--cyan); }
.xy50-vtl-item.latest .xy50-vtl-tag { background: rgba(99,102,241,.16); color: var(--amber); }
.xy50-vtl-item p { color: var(--text-light); font-size: 13.5px; line-height: 1.7; }
.xy50-vtl-list { list-style: none; margin: 10px 0 0; padding: 0; }
.xy50-vtl-list li { position: relative; padding-left: 20px; color: var(--text-light);
  font-size: 12.5px; margin-bottom: 6px; }
.xy50-vtl-list li::before { content: '\f00c'; font-family: 'FontAwesome'; position: absolute;
  left: 0; color: var(--cyan); font-size: 11px; }

@media (max-width: 992px) {
  .xy50-zones { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .xy50-zones { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .xy50-vtl { padding-left: 26px; }
  .xy50-vtl::before { left: 6px; }
  .xy50-vtl-item::before { left: -26px; }
}