/* =========================================================
   米兰体育官网 — SPORTS NEWSROOM 2026 × ATHLETE SIGNAL
   原创样式表 static/css/style.css
   ========================================================= */

:root{
  --navy-deep:#08132b;
  --navy:#0d2049;
  --sport-blue:#163a72;
  --carbon:#12151c;
  --ice:#eef3fb;
  --silver:#b7c3d6;
  --silver-dim:#7f93b8;
  --gold:#f0c24b;
  --gold-deep:#caa136;
  --cyan:#23e7c9;
  --red:#e6394c;
  --line:#1c3766;
  --card-bg:#0e2148;
  --card-bg-2:#0a1730;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --maxw:1240px;
  --shadow-1:0 18px 40px rgba(4,10,26,0.45);
  --font-base:"Microsoft YaHei","PingFang SC","Segoe UI",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--navy-deep);
  color:var(--ice);
  font-family:var(--font-base);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--cyan);text-decoration:none;}
a:hover{text-decoration:underline;}
ul,ol{padding-left:1.4em;}
h1,h2,h3,h4{font-weight:700;color:var(--ice);line-height:1.35;margin:0 0 .6em;}
h1{font-size:clamp(1.7rem,3.6vw,2.6rem);}
h2{font-size:clamp(1.35rem,2.6vw,1.9rem);border-left:5px solid var(--gold);padding-left:.55em;}
h3{font-size:1.2rem;color:var(--gold);}
p{margin:0 0 1em;color:var(--silver);}
table{border-collapse:collapse;width:100%;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:64px 0;}
.section-alt{background:linear-gradient(180deg,var(--navy) 0%,var(--navy-deep) 100%);}
.eyebrow{display:inline-block;font-size:.78rem;letter-spacing:3px;color:var(--gold);text-transform:uppercase;margin-bottom:10px;font-weight:700;}
.section-desc{color:var(--silver);max-width:820px;}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

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

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(8,19,43,0.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:var(--maxw);margin:0 auto;}
.logo-link{display:flex;align-items:center;gap:10px;font-size:1.4rem;font-weight:800;color:var(--ice);letter-spacing:1px;}
.logo-link:hover{text-decoration:none;color:var(--gold);}
.logo-mark{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--gold),var(--cyan));display:inline-flex;align-items:center;justify-content:center;font-size:.7rem;color:var(--navy-deep);font-weight:900;}
.main-nav{display:flex;gap:6px;flex-wrap:wrap;}
.main-nav a{
  color:var(--silver);
  padding:8px 14px;border-radius:20px;font-size:.95rem;font-weight:600;
  transition:background .2s,color .2s;
}
.main-nav a:hover,.main-nav a[aria-current="page"]{background:var(--sport-blue);color:var(--ice);text-decoration:none;}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--ice);border-radius:8px;padding:8px 12px;font-size:1.1rem;}

/* ---------- breadcrumb ---------- */
.breadcrumb{font-size:.85rem;color:var(--silver-dim);padding:14px 0 0;}
.breadcrumb a{color:var(--silver-dim);}
.breadcrumb a:hover{color:var(--gold);}

/* ---------- buttons ---------- */
.btn{
  display:inline-block;padding:12px 24px;border-radius:30px;font-weight:700;font-size:.95rem;
  border:1px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s;
}
.btn:hover{transform:translateY(-2px);text-decoration:none;}
.btn-primary{background:linear-gradient(120deg,var(--gold),var(--gold-deep));color:var(--navy-deep);}
.btn-primary:hover{box-shadow:0 10px 24px rgba(240,194,75,.35);}
.btn-outline{background:transparent;border-color:var(--silver-dim);color:var(--ice);}
.btn-outline:hover{border-color:var(--cyan);color:var(--cyan);}
.btn-ghost{background:rgba(35,231,201,.08);color:var(--cyan);border-color:rgba(35,231,201,.4);}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px;}
.btn-sm{padding:7px 14px;font-size:.82rem;border-radius:20px;}

/* ---------- HERO ---------- */
.hero{position:relative;overflow:hidden;padding:70px 0 60px;background:radial-gradient(circle at 70% 20%,#122a56 0%,var(--navy-deep) 60%);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;}
.hero-eyebrow{color:var(--cyan);letter-spacing:5px;font-size:.8rem;font-weight:700;}
.hero-text p{font-size:1.05rem;}
.hero-media img{border-radius:var(--radius-lg);box-shadow:var(--shadow-1);border:1px solid var(--line);}
.hero-badge{display:inline-flex;gap:8px;align-items:center;background:rgba(240,194,75,.12);border:1px solid rgba(240,194,75,.4);color:var(--gold);padding:6px 14px;border-radius:20px;font-size:.8rem;font-weight:700;margin-bottom:14px;}

/* ---------- ATHLETE SIGNAL ticker ---------- */
.signal-band{background:var(--card-bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0;}
.signal-scroll{display:flex;gap:16px;overflow-x:auto;padding-bottom:10px;scrollbar-width:thin;}
.signal-card{
  min-width:230px;flex:0 0 auto;background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:16px;transition:border-color .2s,transform .2s;
}
.signal-card:hover{border-color:var(--gold);transform:translateY(-4px);}
.signal-tag{font-size:.7rem;letter-spacing:2px;color:var(--cyan);font-weight:700;}
.signal-name{font-size:1.05rem;font-weight:700;margin:6px 0 4px;color:var(--ice);}
.signal-meta{font-size:.8rem;color:var(--silver-dim);margin:2px 0;}
.signal-status{display:inline-block;margin-top:8px;font-size:.72rem;padding:3px 10px;border-radius:12px;background:rgba(35,231,201,.15);color:var(--cyan);}

/* ---------- champion wall grid ---------- */
.wall-grid{display:grid;grid-template-columns:repeat(6,1fr);grid-template-rows:auto auto;gap:20px;}
.wall-card{
  background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .2s,border-color .2s;
}
.wall-card:hover{transform:translateY(-4px);border-color:var(--gold);}
.wall-card img{width:100%;height:auto;}
.wall-card .wall-body{padding:18px;}
.wall-card .wall-tag{font-size:.72rem;color:var(--gold);letter-spacing:1.5px;font-weight:700;}
.wall-card h3{margin:8px 0 6px;color:var(--ice);font-size:1.05rem;}
.wall-card p{font-size:.88rem;margin-bottom:0;}
.wall-xl{grid-column:span 3;grid-row:span 2;}
.wall-md{grid-column:span 3;}
.wall-wide{grid-column:span 3;flex-direction:row;align-items:center;}
.wall-wide img{width:42%;height:100%;object-fit:cover;}
.wall-wide .wall-body{flex:1;}

/* ---------- map ---------- */
.map-wrap{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);}
.map-legend{display:flex;gap:18px;flex-wrap:wrap;margin-top:18px;font-size:.85rem;color:var(--silver);}
.map-legend span{display:inline-flex;align-items:center;gap:6px;}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block;}
.dot-gold{background:var(--gold);} .dot-cyan{background:var(--cyan);} .dot-red{background:var(--red);}

/* ---------- entertainment ---------- */
.ent-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;}
.ent-note{background:rgba(240,194,75,.08);border:1px solid rgba(240,194,75,.35);border-radius:var(--radius-md);padding:16px 18px;font-size:.9rem;color:var(--gold);margin-top:16px;}

/* ---------- card grid generic ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;}
.card{background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:transform .2s,border-color .2s;display:flex;flex-direction:column;}
.card:hover{transform:translateY(-4px);border-color:var(--cyan);}
.card img{width:100%;}
.card-body{padding:18px;flex:1;display:flex;flex-direction:column;}
.card-meta{font-size:.75rem;color:var(--silver-dim);display:flex;gap:10px;flex-wrap:wrap;margin-bottom:8px;}
.card h3{font-size:1.02rem;margin:0 0 8px;color:var(--ice);}
.card p{font-size:.88rem;flex:1;}
.card-actions{display:flex;justify-content:space-between;align-items:center;margin-top:10px;}
.tag-pill{font-size:.72rem;padding:3px 10px;border-radius:12px;background:rgba(35,231,201,.14);color:var(--cyan);font-weight:700;}
.tag-pill.gold{background:rgba(240,194,75,.14);color:var(--gold);}
.tag-pill.red{background:rgba(230,57,76,.14);color:var(--red);}

/* ---------- filters ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 26px;}
.filter-btn{
  background:var(--card-bg-2);border:1px solid var(--line);color:var(--silver);
  padding:8px 16px;border-radius:20px;font-size:.85rem;font-weight:600;cursor:pointer;
}
.filter-btn.active,.filter-btn:hover{background:var(--sport-blue);color:var(--ice);border-color:var(--cyan);}

/* ---------- collect / follow buttons ---------- */
.collect-btn{
  background:none;border:1px solid var(--silver-dim);color:var(--silver);border-radius:20px;
  padding:6px 14px;font-size:.8rem;cursor:pointer;transition:.2s;
}
.collect-btn.active{background:var(--gold);color:var(--navy-deep);border-color:var(--gold);}

/* ---------- article page ---------- */
.article-hero-img{border-radius:var(--radius-lg);border:1px solid var(--line);margin:18px 0 8px;}
.article-caption{font-size:.82rem;color:var(--silver-dim);margin-bottom:24px;}
.article-meta-box{
  background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:16px 20px;font-size:.85rem;color:var(--silver);display:grid;grid-template-columns:repeat(2,1fr);gap:6px 20px;margin:18px 0;
}
.article-body{max-width:800px;}
.article-disclaimer{background:rgba(230,57,76,.08);border:1px solid rgba(230,57,76,.3);border-radius:var(--radius-md);padding:14px 18px;font-size:.86rem;color:var(--silver);margin:20px 0;}
.status-pill{display:inline-block;font-size:.75rem;padding:4px 12px;border-radius:12px;background:rgba(240,194,75,.15);color:var(--gold);font-weight:700;}

/* ---------- table ---------- */
.data-table{overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:var(--radius-md);}
.data-table table{min-width:640px;}
.data-table th,.data-table td{padding:12px 14px;text-align:left;font-size:.88rem;border-bottom:1px solid var(--line);}
.data-table th{background:var(--card-bg-2);color:var(--gold);font-weight:700;}
.data-table tr:last-child td{border-bottom:none;}

/* ---------- flow/steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin:24px 0;}
.step-card{background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-md);padding:18px;position:relative;}
.step-num{font-size:.78rem;color:var(--gold);font-weight:800;letter-spacing:2px;}
.step-card h3{margin:8px 0 6px;font-size:1rem;color:var(--ice);}
.step-card p{font-size:.85rem;margin:0;}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;color:var(--ice);font-size:1rem;font-weight:700;
  padding:16px 4px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;
}
.faq-q::after{content:"+";color:var(--gold);font-size:1.3rem;flex-shrink:0;transition:transform .2s;}
.faq-item.open .faq-q::after{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;color:var(--silver);font-size:.92rem;}
.faq-item.open .faq-a{max-height:600px;}
.faq-a-inner{padding:0 4px 18px;}

/* ---------- info table (company) ---------- */
.info-table{width:100%;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;margin:18px 0;}
.info-table tr td{padding:12px 16px;border-bottom:1px solid var(--line);font-size:.9rem;}
.info-table tr td:first-child{color:var(--gold);font-weight:700;width:200px;background:var(--card-bg-2);}
.info-table tr:last-child td{border-bottom:none;}

/* ---------- timeline (history) ---------- */
.history-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.history-item{background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-md);padding:18px;}
.history-item .h-num{color:var(--cyan);font-weight:800;font-size:.85rem;}

/* ---------- AI assistant widget ---------- */
.ai-widget{background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-1);}
.ai-log{height:280px;overflow-y:auto;background:var(--card-bg-2);border-radius:var(--radius-md);padding:14px;margin-bottom:14px;font-size:.9rem;}
.ai-msg{margin-bottom:12px;padding:10px 14px;border-radius:10px;max-width:88%;}
.ai-msg.user{background:var(--sport-blue);margin-left:auto;color:var(--ice);}
.ai-msg.bot{background:rgba(35,231,201,.1);border:1px solid rgba(35,231,201,.25);color:var(--ice);}
.ai-suggestions{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;}
.ai-input-row{display:flex;gap:10px;}
.ai-input-row input{flex:1;background:var(--card-bg-2);border:1px solid var(--line);border-radius:20px;padding:10px 16px;color:var(--ice);}
.ai-note{font-size:.78rem;color:var(--silver-dim);margin-top:10px;}

/* ---------- register demo form ---------- */
.register-demo{background:var(--card-bg);border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px;max-width:520px;}
.register-demo label{display:block;margin-bottom:16px;font-size:.88rem;color:var(--silver);}
.register-demo input{width:100%;margin-top:6px;padding:10px 14px;background:var(--card-bg-2);border:1px solid var(--line);border-radius:8px;color:var(--silver-dim);}

/* ---------- footer ---------- */
.site-footer{background:var(--carbon);border-top:1px solid var(--line);padding:50px 0 24px;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:30px;}
.footer-col h4{color:var(--gold);font-size:.95rem;margin-bottom:14px;}
.footer-col a{display:block;color:var(--silver);font-size:.88rem;margin-bottom:8px;}
.footer-col a:hover{color:var(--cyan);}
.footer-brand{font-size:1.3rem;font-weight:800;color:var(--ice);margin-bottom:10px;}
.footer-legal{font-size:.82rem;color:var(--silver-dim);border-top:1px solid var(--line);margin-top:34px;padding-top:20px;line-height:1.9;}
.footer-bottom{text-align:center;font-size:.8rem;color:var(--silver-dim);margin-top:16px;}

/* ---------- back to top ---------- */
.back-top{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--gold);color:var(--navy-deep);border:none;font-size:1.2rem;cursor:pointer;box-shadow:var(--shadow-1);display:none;z-index:90;}
.back-top.show{display:block;}

/* ---------- utility ---------- */
.mt-lg{margin-top:40px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.small-note{font-size:.82rem;color:var(--silver-dim);}
.center{text-align:center;}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .hero-grid,.ent-grid,.grid-2{grid-template-columns:1fr;}
  .wall-grid{grid-template-columns:repeat(2,1fr);}
  .wall-xl{grid-column:span 2;grid-row:span 1;}
  .wall-md{grid-column:span 2;}
  .wall-wide{grid-column:span 2;flex-direction:column;}
  .wall-wide img{width:100%;height:180px;}
  .history-list{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:720px){
  .main-nav{position:fixed;top:64px;left:0;right:0;background:var(--navy-deep);flex-direction:column;padding:14px 20px;border-bottom:1px solid var(--line);display:none;gap:2px;}
  .main-nav.open{display:flex;}
  .nav-toggle{display:block;}
  .wall-grid{grid-template-columns:1fr;}
  .wall-xl,.wall-md,.wall-wide{grid-column:span 1;}
  .history-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .article-meta-box{grid-template-columns:1fr;}
  .section{padding:44px 0;}
}