:root{
  --bg:#061426; --bg2:#0b2038; --text:#0b1f36; --muted:#5b6b80; --green:#bcff32; --mint:#43d99b; --yellow:#d8ff2f; --card:#ffffff; --line:#dfe8f2; --navy:#071a32; --soft:#f4f8fc;
  --radius:24px; --shadow:0 18px 45px rgba(8,28,55,.12);
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#f7fbff;line-height:1.75} img{max-width:100%;display:block} a{text-decoration:none;color:inherit}.wrap{width:min(1180px,92vw);margin:0 auto}.small{font-size:14px;color:var(--muted)}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(18px);border-bottom:1px solid rgba(20,55,90,.08)}.nav{height:82px;display:flex;align-items:center;gap:34px;justify-content:space-between}.brand{display:flex;align-items:center;gap:14px}.brand img{height:56px;width:auto}.brand-text{font-weight:900;color:var(--navy);letter-spacing:-.03em}.brand-sub{font-size:11px;color:#638094;letter-spacing:.15em;text-transform:uppercase;margin-top:-4px}.nav-links{display:flex;gap:28px;font-weight:800;color:#18304d}.nav-links a{position:relative}.nav-links a.active:after,.nav-links a:hover:after{content:"";position:absolute;height:3px;border-radius:99px;background:linear-gradient(90deg,var(--yellow),var(--mint));left:0;right:0;bottom:-12px}.nav-cta{padding:12px 22px;border-radius:999px;background:var(--navy);color:#fff;font-weight:900;box-shadow:0 10px 24px rgba(8,28,55,.14)}.menu-toggle{display:none;border:0;background:var(--navy);color:#fff;border-radius:12px;padding:10px 14px;font-weight:900}
.hero{position:relative;overflow:hidden;background:radial-gradient(circle at 75% 20%,rgba(91,255,193,.18),transparent 32%),linear-gradient(135deg,#061426 0%,#081d36 58%,#082e3a 100%);color:#fff;padding:76px 0 70px}.hero:before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.12) 1px, transparent 1px);background-size:22px 22px;opacity:.3}.hero-grid{position:relative;display:grid;grid-template-columns:1fr 1.04fr;gap:56px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:900;letter-spacing:.14em;text-transform:uppercase;color:#dffaff}.eyebrow:before{content:"";width:44px;height:4px;border-radius:99px;background:linear-gradient(90deg,var(--yellow),#fff,var(--mint))}.hero h1{font-size:clamp(42px,5vw,76px);line-height:1.05;margin:18px 0 22px;letter-spacing:-.07em}.hero h1 strong{color:var(--yellow);font-style:normal}.hero p{font-size:19px;color:#d9e8f5;margin:0 0 28px;max-width:680px}.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin:28px 0 34px}.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 24px;border-radius:999px;font-weight:900}.btn.primary{background:linear-gradient(135deg,var(--yellow),var(--mint));color:#071a32}.btn.ghost{border:1px solid rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.06)}.hero-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.hero-card{min-height:138px;padding:19px 17px;border:1px solid rgba(255,255,255,.18);border-radius:20px;background:rgba(255,255,255,.07);box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}.hero-card b{display:block;font-size:18px;margin-bottom:7px}.hero-card span{font-size:14px;color:#b8cfe3}.hero-visual{border-radius:30px;overflow:hidden;box-shadow:0 35px 80px rgba(0,0,0,.28);border:1px solid rgba(255,255,255,.12);background:#071a32}.hero-visual img{width:100%;height:540px;object-fit:cover;object-position:center}.section{padding:78px 0}.section.alt{background:#fff}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:34px}.section-head h2{font-size:36px;line-height:1.2;margin:0;letter-spacing:-.04em}.section-head p{max-width:620px;margin:0;color:var(--muted)}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.prose{font-size:17px;color:#213850}.prose p{margin:0 0 18px}.image-card{border-radius:28px;overflow:hidden;box-shadow:var(--shadow);background:#fff}.image-card img{width:100%;height:390px;object-fit:cover}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.feature{padding:24px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 26px rgba(8,28,55,.06)}.feature .icon{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:#eff9e9;color:#0a8c5a;font-size:22px;margin-bottom:14px}.feature h3{margin:0 0 10px;font-size:20px}.feature p{margin:0;color:var(--muted);font-size:15px}.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.step{padding:26px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:0 10px 26px rgba(8,28,55,.06);position:relative}.step:before{counter-increment:s;content:"0" counter(s);font-weight:900;color:var(--mint);font-size:15px}.step h3{margin:8px 0 8px}.step p{margin:0;color:var(--muted)}.news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}.article-card{display:grid;gap:16px;background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:0 12px 30px rgba(8,28,55,.07)}.article-card img{width:100%;height:240px;object-fit:cover}.article-card .body{padding:22px}.meta{font-size:13px;color:#60738a;margin-bottom:8px}.article-card h3{font-size:24px;line-height:1.35;margin:0 0 10px;letter-spacing:-.03em}.article-card p{color:#52677f;margin:0 0 14px}.read{font-weight:900;color:#0b7b55}.side-list{display:grid;gap:18px}.side-item{display:grid;grid-template-columns:168px 1fr;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:22px;padding:14px;box-shadow:0 12px 26px rgba(8,28,55,.06)}.side-item img{height:112px;width:100%;object-fit:cover;border-radius:16px}.side-item h3{font-size:21px;line-height:1.35;margin:0 0 8px}.faq{display:grid;grid-template-columns:1fr 1fr;gap:18px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px}.faq-item h3{margin:0 0 8px;font-size:20px}.faq-item p{margin:0;color:var(--muted)}.notice{background:#fff8e5;border:1px solid #f3d996;border-radius:24px;padding:26px;color:#4a3a14}.site-footer{background:#061426;color:#c9d7e6;padding:48px 0}.footer-grid{display:grid;grid-template-columns:1.1fr .7fr .7fr;gap:34px}.footer-grid h3{color:#fff;margin-top:0}.footer-grid a{display:block;margin:7px 0;color:#c9d7e6}.copyright{border-top:1px solid rgba(255,255,255,.1);margin-top:34px;padding-top:20px;color:#8fa4ba;font-size:14px}.page-hero{background:linear-gradient(135deg,#061426,#082b3a);color:#fff;padding:72px 0}.page-hero h1{font-size:48px;line-height:1.12;margin:0 0 14px}.breadcrumb{font-size:14px;color:#b8d8e7;margin-bottom:16px}.list-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.pager{display:flex;gap:10px;justify-content:center;margin-top:36px}.pager a,.pager span{padding:10px 16px;border-radius:14px;border:1px solid var(--line);background:#fff;font-weight:900}.pager .current{background:var(--navy);color:#fff}.article-main{background:#fff}.article-shell{display:grid;grid-template-columns:minmax(0,800px) 320px;gap:46px;align-items:start}.article-content{background:#fff;border-radius:28px;padding:42px;box-shadow:var(--shadow);border:1px solid var(--line)}.article-content h1{font-size:42px;line-height:1.16;margin:0 0 16px}.article-content .lead{font-size:19px;color:#456079}.article-content img.cover{border-radius:22px;margin:24px 0;width:100%;height:380px;object-fit:cover}.article-content p{font-size:18px;color:#213850}.toc-box,.related-box{background:#fff;border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:0 12px 30px rgba(8,28,55,.06);margin-bottom:22px}.related-box a{display:block;padding:12px 0;border-bottom:1px solid #edf2f7}.related-box a:last-child{border-bottom:0}.mobile-only{display:none}
@media (max-width: 980px){.nav-links,.nav-cta{display:none}.menu-toggle{display:block}.nav.open .nav-links{display:flex;position:absolute;left:0;right:0;top:82px;background:#fff;padding:20px;flex-direction:column;border-bottom:1px solid var(--line)}.hero-grid,.grid-2,.news-layout,.article-shell{grid-template-columns:1fr}.hero-visual img{height:auto}.hero-cards,.feature-grid,.steps,.faq,.list-grid{grid-template-columns:1fr 1fr}.side-item{grid-template-columns:140px 1fr}.footer-grid{grid-template-columns:1fr}.section{padding:56px 0}.article-content{padding:26px}.article-content h1{font-size:32px}}
@media (max-width: 620px){.brand img{height:46px}.hero{padding:48px 0}.hero h1{font-size:42px}.hero p{font-size:16px}.hero-cards,.feature-grid,.steps,.faq,.list-grid{grid-template-columns:1fr}.section-head{display:block}.side-item{grid-template-columns:1fr}.side-item img{height:190px}.article-card img{height:210px}.image-card img{height:260px}.page-hero h1{font-size:34px}.hero-actions{flex-direction:column}.btn{justify-content:center}}


/* Template differentiation layer: tennis editorial/data skin */
body.skin-court{
  --radius:26px;
  --shadow:0 20px 55px rgba(7,26,50,.13);
  --soft:#f5f9fd;
}
body.data-variant-b{--radius:18px;--green:#baff35;--mint:#41dcb1;}
body.data-article{--radius:20px;}
body.dd-seed-0{--dd-card-gap:16px;--dd-card-lift:0px;}
body.dd-seed-1{--dd-card-gap:18px;--dd-card-lift:-2px;}
body.dd-seed-2{--dd-card-gap:14px;--dd-card-lift:1px;}
body.dd-seed-3{--dd-card-gap:20px;--dd-card-lift:-1px;}
.hero-grid{gap:clamp(34px,5vw,68px)}
.hero-visual{border:0;box-shadow:0 36px 90px rgba(0,0,0,.28)}
.hero-visual img{object-position:center center;filter:saturate(1.03) contrast(1.02)}
.hero-card,.feature,.step,.faq-item,.article-card{transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;}
.hero-card:hover,.feature:hover,.step:hover,.faq-item:hover,.article-card:hover{transform:translateY(var(--dd-card-lift));}
.news-section .editorial-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch;}
.editorial-list .article-card,.list-grid .article-card{display:grid;grid-template-rows:auto 1fr;min-height:100%;border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid rgba(11,31,54,.08);box-shadow:var(--shadow)}
.editorial-list .article-card img,.list-grid .article-card img{width:100%;height:210px;object-fit:cover;object-position:center;}
.article-card .body{display:flex;flex-direction:column;gap:10px;padding:22px;}
.article-card .body h3{margin:0;font-size:21px;line-height:1.42;letter-spacing:-.02em;}
.article-card .body p{margin:0;color:var(--muted);line-height:1.75;}
.article-card .read{margin-top:auto;align-self:flex-start;}
.list-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;align-items:stretch;}
.more-row{margin-top:30px;text-align:center;}
.article-content .cover{border-radius:22px;max-height:420px;width:100%;object-fit:cover;object-position:center;margin:26px 0;}
.article-content p{font-size:17px;line-height:2.05;color:#21344a;}
.article-content .lead{font-size:19px;color:#3b536d;background:#f4f9fe;border-left:4px solid var(--mint);padding:16px 18px;border-radius:0 14px 14px 0;}
.related-box a{line-height:1.65;}
.notice{background:linear-gradient(135deg,#071a32,#0b2b42);color:#fff;border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.notice p{color:#d9e8f5;margin-bottom:0}.notice h2{margin-top:0}.step{position:relative;overflow:hidden}.step:after,.feature:after{content:"";position:absolute;right:18px;bottom:16px;width:36px;height:4px;border-radius:99px;background:linear-gradient(90deg,var(--yellow),var(--mint));opacity:.9}.feature{position:relative}.site-footer .footer-grid a{display:block;margin:5px 0;color:#dbeaf5}.site-footer p{color:#c6d7e6}.copyright{color:#9fb4c8;margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12)}
@media (max-width: 980px){.hero-grid,.grid-2,.article-shell{grid-template-columns:1fr!important}.hero-visual img{height:auto}.hero-cards,.news-section .editorial-list,.list-grid{grid-template-columns:1fr 1fr}.section-head{align-items:flex-start;flex-direction:column}.nav{height:auto;min-height:76px;flex-wrap:wrap}.nav-links{display:none;width:100%;flex-direction:column;gap:14px;padding:8px 0 18px}.nav.open .nav-links{display:flex}.menu-toggle{display:inline-flex}.nav-cta{display:none}}
@media (max-width: 640px){.hero{padding:48px 0}.hero h1{font-size:38px}.hero p{font-size:16px}.hero-cards,.news-section .editorial-list,.list-grid{grid-template-columns:1fr}.article-card img{height:190px!important}.brand img{height:44px}.brand-sub{display:none}.nav{gap:12px}.section{padding:54px 0}.section-head h2{font-size:30px}}