/* ============================================================
   劲爆体育官网 — style.css
   Sports Intelligence Lab / Performance Data Platform theme
   ============================================================ */

:root{
  --navy-950:#050b16;
  --navy-900:#081020;
  --navy-850:#0b1528;
  --navy-800:#0e1c34;
  --navy-700:#132542;
  --navy-600:#1a3358;
  --blue-500:#2f7bff;
  --blue-400:#5b9bff;
  --blue-300:#8fbcff;
  --teal-400:#2fd6c0;
  --teal-300:#7fe9da;
  --orange-500:#ff7a33;
  --orange-400:#ff9a5c;
  --white:#f6f8fc;
  --grey-100:#e7ecf5;
  --grey-300:#b9c4d6;
  --grey-500:#8592ab;
  --grey-700:#5a6780;

  --bg:var(--navy-950);
  --bg-panel:var(--navy-850);
  --bg-panel-2:var(--navy-800);
  --bg-card:#0d1930;
  --border:rgba(139,164,214,0.16);
  --border-strong:rgba(139,164,214,0.30);
  --text-main:var(--white);
  --text-sub:var(--grey-300);
  --text-mute:var(--grey-500);
  --accent:var(--blue-500);
  --accent-2:var(--teal-400);
  --accent-3:var(--orange-500);

  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:22px;
  --shadow-1:0 10px 30px rgba(3,8,20,0.35);
  --container:1180px;
  --font-cn:"PingFang SC","Microsoft YaHei","Noto Sans SC","Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Courier New",monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{overflow-x:hidden;scroll-behavior:smooth;}
body{
  margin:0;
  overflow-x:hidden;
  background:var(--bg);
  color:var(--text-main);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
table{border-collapse:collapse;width:100%;}
button{font-family:inherit;cursor:pointer;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ---------- Background texture ---------- */
body{
  background-image:
    radial-gradient(1100px 620px at 82% -6%, rgba(47,123,255,0.16), transparent 60%),
    radial-gradient(900px 500px at -10% 18%, rgba(47,214,192,0.10), transparent 55%);
  background-repeat:no-repeat;
}

/* ---------- Skip link ---------- */
.skip-link{
  position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;
  padding:10px 16px;border-radius:0 0 8px 0;z-index:999;
}
.skip-link:focus{left:0;}

/* ============================================================
   Header / Nav
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:200;
  border-bottom:1px solid var(--border);
}
/* backdrop-filter lives on a ::before layer, not on .site-header itself —
   backdrop-filter/filter/transform on an ancestor becomes the containing
   block for position:fixed descendants, which would trap the off-canvas
   .main-nav panel inside the 68px header bar instead of the viewport. */
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:rgba(5,11,22,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.header-row{
  display:flex;align-items:center;justify-content:space-between;
  height:68px;gap:10px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand .logo-mark{width:34px;height:34px;flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-cn{font-size:17px;font-weight:700;letter-spacing:.5px;color:var(--text-main);}
.brand-en{font-size:10px;letter-spacing:1.5px;color:var(--text-mute);text-transform:uppercase;}

.main-nav{display:flex;align-items:center;gap:0;flex:1 1 auto;justify-content:center;}
.main-nav a{
  padding:7px 8px;border-radius:8px;font-size:12.5px;color:var(--grey-300);
  white-space:nowrap;transition:background .15s,color .15s;
}
.main-nav a:hover,.main-nav a.active{background:rgba(47,123,255,0.14);color:#fff;}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 18px;border-radius:999px;font-size:13.5px;font-weight:600;
  border:1px solid transparent;transition:transform .15s,box-shadow .15s,background .15s;
  white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--blue-500),var(--teal-400));color:#04101f;}
.btn-primary:hover{box-shadow:0 8px 22px rgba(47,123,255,0.35);transform:translateY(-1px);}
.btn-ghost{border-color:var(--border-strong);color:var(--text-main);}
.btn-ghost:hover{background:rgba(255,255,255,0.06);}
.btn-sm{padding:6px 14px;font-size:12.5px;}

.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border-strong);
  background:transparent;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{width:18px;height:2px;background:var(--text-main);display:block;transition:.2s;}
.nav-toggle.is-active span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-active span:nth-child(2){opacity:0;}
.nav-toggle.is-active span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.nav-scrim{
  position:fixed;inset:0;background:rgba(2,6,14,0.6);opacity:0;pointer-events:none;
  transition:opacity .2s;z-index:150;
}
.nav-scrim.is-active{opacity:1;pointer-events:auto;}

@media (max-width:1200px){
  .main-nav{
    position:fixed;top:68px;right:0;bottom:0;width:78%;max-width:320px;
    background:var(--navy-900);border-left:1px solid var(--border);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:18px;gap:4px;transform:translateX(100%);transition:transform .25s ease;
    z-index:160;overflow-y:auto;
  }
  .main-nav.is-active{transform:translateX(0);}
  .main-nav a{padding:13px 14px;font-size:15px;border-radius:10px;}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-ghost{display:none;}
}
@media (max-width:480px){
  .header-actions .btn-primary{padding:8px 13px;font-size:12.5px;}
  .brand-en{display:none;}
}

/* ============================================================
   Breadcrumb
   ============================================================ */
.breadcrumb{padding:14px 0;font-size:12.5px;color:var(--text-mute);}
.breadcrumb a{color:var(--grey-300);}
.breadcrumb a:hover{color:var(--accent-2);}
.breadcrumb .sep{margin:0 6px;opacity:.5;}

/* ============================================================
   Hero
   ============================================================ */
.hero{padding:34px 0 56px;position:relative;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:rgba(47,214,192,0.10);border:1px solid rgba(47,214,192,0.35);
  font-size:12.5px;color:var(--teal-300);letter-spacing:.5px;margin-bottom:18px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--teal-400);}
.hero h1{font-size:38px;line-height:1.32;font-weight:800;letter-spacing:.2px;margin-bottom:16px;}
.hero .lede{font-size:16px;color:var(--text-sub);max-width:56ch;margin-bottom:26px;}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px;}
.hero-stats{display:flex;gap:26px;flex-wrap:wrap;}
.hero-stats .stat b{display:block;font-size:20px;color:var(--text-main);}
.hero-stats .stat span{font-size:12px;color:var(--text-mute);}
.hero-visual{position:relative;}
.hero-visual .panel-note{
  margin-top:10px;font-size:11.5px;color:var(--text-mute);text-align:center;
}

@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;}
  .hero h1{font-size:30px;}
  .hero-visual{order:-1;}
}

/* ============================================================
   Section scaffolding
   ============================================================ */
section{padding:64px 0;}
section.tight{padding:44px 0;}
.section-head{max-width:760px;margin-bottom:34px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.kicker{
  font-size:12.5px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;
  color:var(--accent-2);margin-bottom:10px;display:block;
}
.section-head h2{font-size:27px;font-weight:800;line-height:1.4;margin-bottom:12px;}
.section-head p{color:var(--text-sub);font-size:15px;}
.divider{height:1px;background:var(--border);border:0;margin:0;}
.band{background:var(--bg-panel);border-top:1px solid var(--border);border-bottom:1px solid var(--border);}
.band-2{background:linear-gradient(180deg,var(--navy-900),var(--navy-950));}

/* ============================================================
   Cards / Grids
   ============================================================ */
.grid{display:grid;gap:20px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media (max-width:960px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:24px;transition:border-color .15s,transform .15s;
}
.card:hover{border-color:var(--border-strong);}
.card .icon-wrap{
  width:46px;height:46px;border-radius:12px;background:rgba(47,123,255,0.12);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.card .icon-wrap svg{width:24px;height:24px;}
.card h3{font-size:16.5px;font-weight:700;margin-bottom:8px;}
.card p{font-size:13.5px;color:var(--text-sub);}

/* ============================================================
   Data flow diagram (generic pipeline strip)
   ============================================================ */
.flow-strip{display:flex;flex-wrap:wrap;align-items:center;gap:0;margin:28px 0;}
.flow-node{
  background:var(--bg-card);border:1px solid var(--border-strong);border-radius:var(--radius-sm);
  padding:12px 16px;font-size:13px;font-weight:600;color:var(--text-main);white-space:nowrap;
}
.flow-arrow{color:var(--accent-2);font-size:16px;padding:0 10px;opacity:.8;}
@media (max-width:720px){
  .flow-strip{flex-direction:column;align-items:stretch;}
  .flow-node{text-align:center;}
  .flow-arrow{align-self:center;transform:rotate(90deg);padding:6px 0;}
}

/* ============================================================
   Article system (homepage flagship articles use varied layouts)
   ============================================================ */
.article-block{
  border:1px solid var(--border);border-radius:var(--radius-lg);
  background:var(--bg-card);padding:36px;margin-bottom:26px;
}
.article-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:14px;}
.tag-pill{
  font-size:11.5px;font-weight:700;letter-spacing:.4px;padding:4px 10px;border-radius:999px;
  background:rgba(47,214,192,0.12);color:var(--teal-300);border:1px solid rgba(47,214,192,0.3);
}
.tag-pill.alt{background:rgba(255,122,51,0.12);color:var(--orange-400);border-color:rgba(255,122,51,0.3);}
.article-date{font-size:12px;color:var(--text-mute);}
.article-block h3{font-size:22px;line-height:1.5;font-weight:800;margin-bottom:16px;}
.article-body p{color:var(--text-sub);font-size:14.5px;margin-bottom:14px;}
.article-body p:last-child{margin-bottom:0;}
.article-body strong{color:var(--text-main);}
.example-note{
  font-size:12.5px;color:var(--text-mute);background:rgba(139,164,214,0.08);
  border-left:2px solid var(--accent-2);padding:8px 12px;border-radius:0 8px 8px 0;margin:14px 0;
}
.related-read{
  margin-top:20px;padding-top:16px;border-top:1px dashed var(--border);
  font-size:13px;color:var(--text-mute);display:flex;flex-wrap:wrap;gap:8px 18px;
}
.related-read a{color:var(--blue-400);}
.related-read a:hover{color:var(--teal-300);}

/* layout variants */
.article-block.layout-split{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.article-block.layout-split .article-visual{position:sticky;top:90px;}
.article-block.layout-wide h3{font-size:25px;max-width:80%;}
.article-block.layout-flow .flow-strip{margin:22px 0;}
.article-block.layout-case .case-figure{
  display:flex;gap:16px;flex-wrap:wrap;margin:16px 0;padding:16px;
  background:var(--bg-panel-2);border-radius:var(--radius-sm);border:1px solid var(--border);
}
.article-block.layout-case .case-figure .figure-item{flex:1 1 140px;}
.article-block.layout-case .figure-item b{display:block;font-size:19px;color:var(--accent-2);}
.article-block.layout-case .figure-item span{font-size:12px;color:var(--text-mute);}
.article-block.layout-matrix .metric-matrix{
  display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0;
}
.metric-matrix .metric-cell{
  background:var(--bg-panel-2);border:1px solid var(--border);border-radius:8px;
  padding:10px 12px;font-size:12px;
}
.metric-matrix .metric-cell b{display:block;font-size:15px;color:var(--text-main);}
.article-block.layout-qa .qa-lead{
  font-size:16px;color:var(--text-main);font-weight:600;margin-bottom:16px;
  padding:14px 16px;background:var(--bg-panel-2);border-radius:10px;border:1px solid var(--border);
}
.article-block.layout-timeline .timeline{display:flex;flex-direction:column;gap:0;margin:18px 0;}
.timeline .t-step{display:flex;gap:14px;padding:10px 0;border-left:2px solid var(--border);padding-left:18px;position:relative;}
.timeline .t-step::before{
  content:"";position:absolute;left:-6px;top:16px;width:10px;height:10px;border-radius:50%;
  background:var(--accent-2);
}
.timeline .t-step b{display:block;font-size:13px;color:var(--text-main);margin-bottom:2px;}
.timeline .t-step span{font-size:12.5px;color:var(--text-mute);}
@media (max-width:900px){
  .article-block.layout-split{grid-template-columns:1fr;}
  .article-block.layout-split .article-visual{position:static;}
  .article-block.layout-matrix .metric-matrix{grid-template-columns:repeat(2,1fr);}
  .article-block{padding:24px;}
  .article-block h3{font-size:19px;}
  .article-block.layout-wide h3{max-width:100%;font-size:20px;}
}

/* method box */
.method-box{background:var(--bg-panel-2);border:1px solid var(--border);border-radius:12px;padding:18px 20px;margin:16px 0;}
.method-box .method-title{font-size:13px;font-weight:700;color:var(--accent-2);margin-bottom:10px;}
.method-box ol{counter-reset:m;display:flex;flex-direction:column;gap:8px;}
.method-box li{counter-increment:m;font-size:13.5px;color:var(--text-sub);padding-left:26px;position:relative;}
.method-box li::before{
  content:counter(m);position:absolute;left:0;top:0;width:18px;height:18px;border-radius:5px;
  background:rgba(47,123,255,0.18);color:var(--blue-300);font-size:11px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}

/* data type labels: DATA / ANALYSIS / SUGGESTION / UNCERTAINTY */
.label-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0;}
.lbl{font-size:10.5px;font-weight:800;letter-spacing:.6px;padding:5px 9px;border-radius:6px;}
.lbl-data{background:rgba(47,123,255,0.16);color:var(--blue-300);}
.lbl-analysis{background:rgba(47,214,192,0.16);color:var(--teal-300);}
.lbl-suggestion{background:rgba(255,122,51,0.16);color:var(--orange-400);}
.lbl-uncertainty{background:rgba(139,164,214,0.16);color:var(--grey-300);}
.type-block{display:flex;gap:10px;margin-bottom:10px;align-items:flex-start;}
.type-block p{margin:0;font-size:13px;color:var(--text-sub);}

/* ============================================================
   Secondary-page article (full article on data/training/ai/model/app/download)
   ============================================================ */
.article-full{
  border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-card);
  padding:38px;margin-bottom:28px;
}
.article-full .article-topic{font-size:12px;color:var(--accent-2);font-weight:700;margin-bottom:10px;}
.article-full h2{font-size:24px;font-weight:800;line-height:1.5;margin-bottom:18px;}
.article-full .article-body p{font-size:15px;color:var(--text-sub);margin-bottom:16px;}
.article-full .article-body h4{font-size:15.5px;color:var(--text-main);margin:20px 0 10px;font-weight:700;}

/* ============================================================
   Rollup summary cards (homepage "最新内容" sections)
   ============================================================ */
.rollup-card{
  background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);
  padding:22px;display:flex;flex-direction:column;gap:10px;
}
.rollup-card .rollup-tag{font-size:11px;color:var(--accent-2);font-weight:700;}
.rollup-card h4{font-size:15.5px;font-weight:700;line-height:1.5;}
.rollup-card p{font-size:13px;color:var(--text-sub);flex:1;}
.rollup-card .rollup-link{font-size:12.5px;color:var(--blue-400);margin-top:4px;}
.rollup-card .rollup-link:hover{color:var(--teal-300);}
.rollup-head-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:22px;flex-wrap:wrap;}
.rollup-head-row h2{font-size:22px;font-weight:800;}
.rollup-head-row .view-all{font-size:13px;color:var(--blue-400);white-space:nowrap;}

/* ============================================================
   FAQ
   ============================================================ */
.faq-list{display:flex;flex-direction:column;gap:10px;}
.faq-item{border:1px solid var(--border);border-radius:12px;background:var(--bg-card);overflow:hidden;}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;font-size:14.5px;font-weight:600;background:none;border:0;color:var(--text-main);
  width:100%;text-align:left;
}
.faq-q .qmark{color:var(--accent-2);margin-right:8px;}
.faq-q .plus{flex:0 0 auto;font-size:18px;color:var(--text-mute);transition:transform .2s;}
.faq-item.is-open .plus{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a-inner{padding:0 20px 18px;font-size:13.5px;color:var(--text-sub);}
.faq-cols{columns:2;column-gap:20px;}
.faq-cols .faq-item{break-inside:avoid;margin-bottom:10px;}
@media (max-width:800px){.faq-cols{columns:1;}}

/* ============================================================
   Company / About
   ============================================================ */
.about-panel{
  display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center;
  background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-lg);padding:38px;
}
.about-panel p{color:var(--text-sub);font-size:14.5px;margin-bottom:14px;}
.about-panel h2{font-size:22px;font-weight:800;margin-bottom:16px;}
.about-facts{display:flex;flex-direction:column;gap:14px;}
.about-facts .fact{border:1px solid var(--border);border-radius:10px;padding:14px 16px;background:var(--bg-card);}
.about-facts .fact b{display:block;font-size:13.5px;color:var(--text-main);margin-bottom:3px;}
.about-facts .fact span{font-size:12px;color:var(--text-mute);}
@media (max-width:860px){.about-panel{grid-template-columns:1fr;}}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{border-top:1px solid var(--border);background:var(--navy-900);padding:48px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px;}
.footer-brand .brand{margin-bottom:12px;}
.footer-brand p{font-size:13px;color:var(--text-mute);max-width:34ch;}
.footer-col h5{font-size:12.5px;letter-spacing:.5px;color:var(--grey-300);margin-bottom:14px;text-transform:uppercase;}
.footer-col ul{display:flex;flex-direction:column;gap:9px;}
.footer-col a{font-size:13px;color:var(--grey-300);}
.footer-col a:hover{color:var(--teal-300);}
.footer-bottom{
  border-top:1px solid var(--border);padding-top:20px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-size:12px;color:var(--text-mute);
}
.beian-area{min-height:16px;}
@media (max-width:860px){
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr;}
}

/* ============================================================
   Buttons row / misc utility
   ============================================================ */
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px;}
.pill-row{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0;}
.pill{font-size:12px;color:var(--grey-300);border:1px solid var(--border-strong);padding:5px 12px;border-radius:999px;}
.table-scroll{overflow-x:auto;margin:16px 0;border:1px solid var(--border);border-radius:10px;}
.table-scroll table{min-width:560px;}
.table-scroll th,.table-scroll td{padding:10px 14px;font-size:12.5px;text-align:left;border-bottom:1px solid var(--border);}
.table-scroll th{color:var(--text-main);background:var(--bg-panel-2);white-space:nowrap;}
.table-scroll td{color:var(--text-sub);}

.notice-box{
  border:1px solid rgba(255,122,51,0.32);background:rgba(255,122,51,0.08);border-radius:12px;
  padding:16px 18px;font-size:13.5px;color:var(--grey-100);margin:20px 0;
}
.notice-box b{color:var(--orange-400);}

.back-to-top{
  position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;
  background:var(--bg-card);border:1px solid var(--border-strong);display:flex;align-items:center;
  justify-content:center;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:120;
}
.back-to-top.is-visible{opacity:1;pointer-events:auto;}
.back-to-top:hover{transform:translateY(-3px);}

.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px;}
.tab-btn{
  padding:8px 16px;border-radius:999px;border:1px solid var(--border-strong);background:transparent;
  color:var(--grey-300);font-size:13px;font-weight:600;
}
.tab-btn.is-active{background:linear-gradient(135deg,var(--blue-500),var(--teal-400));color:#04101f;border-color:transparent;}
.tab-panel{display:none;}
.tab-panel.is-active{display:block;}

.step-toggle{display:flex;flex-direction:column;gap:10px;margin:18px 0;}
.step-toggle .step-item{border:1px solid var(--border);border-radius:10px;background:var(--bg-card);}
.step-toggle .step-head{display:flex;gap:12px;align-items:center;padding:14px 16px;}
.step-toggle .step-num{
  width:26px;height:26px;border-radius:50%;background:rgba(47,123,255,0.18);color:var(--blue-300);
  font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.step-toggle .step-head b{font-size:14px;}
.step-toggle .step-body{padding:0 16px 16px 54px;font-size:13px;color:var(--text-sub);}

/* device mock */
.device-frame{
  max-width:300px;margin:0 auto;border-radius:34px;border:1px solid var(--border-strong);
  background:var(--bg-panel-2);padding:10px;box-shadow:var(--shadow-1);
}

/* responsive type scale */
@media (max-width:640px){
  .hero h1{font-size:25px;}
  .section-head h2{font-size:21px;}
  .article-block{padding:20px;}
  .article-block h3{font-size:18px;}
  .article-full{padding:22px;}
  .article-full h2{font-size:20px;}
  .about-panel{padding:24px;}
  section{padding:44px 0;}
}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);white-space:nowrap;border:0;
}