/* KAIYUN SPORTS — responsive editorial design */
:root{--bg:#f5fbff;--white:#fff;--soft:#eaf7fc;--ice:#dff5fb;--cyan:#25c8d1;--sky:#25b6e8;--blue:#1787db;--deep:#174b78;--title:#173b60;--ink:#2d4359;--muted:#687f93;--border:#dcebf3;--footer:#123653;--shadow:0 15px 48px rgba(28,99,147,.075)}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;overflow-x:hidden}a{color:inherit;text-decoration:none}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #138cce;outline-offset:3px}img{max-width:100%;height:auto}button{font:inherit;cursor:pointer}h1,h2,h3,p,ul,ol{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.38;letter-spacing:-.025em}h1{font-size:clamp(27px,3.5vw,40px)}h2{font-size:clamp(21px,2.4vw,26px)}h3{font-size:19px}p,li{line-height:1.82}.shell{max-width:1160px;margin-inline:auto;padding-inline:24px}.skip-link{position:absolute;left:12px;top:-80px;background:#fff;padding:10px;z-index:99}.skip-link:focus{top:12px}.site-header{height:72px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:30}.header-inner{height:100%;display:flex;align-items:center;gap:22px}.brand{flex:0 0 auto;display:flex;align-items:center;min-width:126px}.brand-logo{display:block;max-width:180px;width:auto;height:37px;object-fit:contain}.brand-fallback{font-weight:900;color:var(--deep);font-size:23px;white-space:nowrap;letter-spacing:-1px}.brand-fallback span{color:var(--cyan)}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:clamp(11px,1.5vw,25px);flex:1;white-space:nowrap}.desktop-nav a{font-size:14px;font-weight:700;color:var(--deep);position:relative;padding-block:24px}.desktop-nav a:hover,.desktop-nav a.active{color:var(--blue)}.desktop-nav a.active::after{content:"";height:3px;position:absolute;left:0;right:0;bottom:0;background:linear-gradient(90deg,var(--cyan),var(--blue));border-radius:8px}.enter-btn,.primary-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:82px;height:42px;padding:0 20px;border-radius:99px;background:linear-gradient(110deg,var(--cyan),var(--sky),var(--blue));color:#fff;font-weight:700;white-space:nowrap;box-shadow:0 7px 18px rgba(23,135,219,.16);font-size:14px}.enter-btn:hover,.primary-btn:hover{filter:brightness(.95)}.menu-toggle{display:none;border:0;background:transparent;width:42px;height:42px;padding:11px;align-items:center;flex-direction:column;justify-content:center;gap:4px}.menu-toggle span{height:2px;width:21px;background:var(--title);border-radius:5px}.drawer-overlay{visibility:hidden;pointer-events:none;position:fixed;inset:0;background:rgba(9,39,65,.44);z-index:39;opacity:0;transition:opacity .2s}.mobile-drawer{position:fixed;top:0;left:0;bottom:0;width:min(86vw,340px);padding:18px 23px 35px;background:white;z-index:40;overflow:auto;transform:translateX(-105%);transition:transform .25s;visibility:hidden}.mobile-drawer>a{display:block;padding:9px 0;border-bottom:1px solid var(--border);font-size:15px;font-weight:600}.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:10px}.drawer-top .brand-logo{height:30px}.drawer-close{font-size:29px;color:var(--deep);border:0;background:transparent}.drawer-label{font-size:12px;letter-spacing:.12em;color:var(--blue);font-weight:800;margin:23px 0 0}.menu-open{overflow:hidden}.menu-open .drawer-overlay{visibility:visible;opacity:1;pointer-events:auto}.menu-open .mobile-drawer{visibility:visible;transform:translateX(0)}.bottom-nav{display:none}.back-top{position:fixed;right:22px;bottom:24px;opacity:0;pointer-events:none;background:var(--blue);color:white;border:0;width:44px;height:44px;border-radius:50%;z-index:15;font-size:23px;box-shadow:var(--shadow);transition:opacity .2s}.back-top.visible{opacity:1;pointer-events:auto}
/* shared layout */
.page-section{padding-block:42px}.section-top{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:24px}.eyebrow{display:inline-block;font-size:12px;letter-spacing:.13em;font-weight:900;color:#078ba6;text-transform:uppercase;margin-bottom:12px}.section-top p,.lede{max-width:740px;color:var(--muted);margin-bottom:0}.kicker{font-weight:700;color:var(--blue);font-size:13px;letter-spacing:.11em}.arrow-link{display:inline-flex;align-items:center;gap:9px;color:var(--blue);font-size:14px;font-weight:800;white-space:nowrap}.arrow-link:hover{text-decoration:underline}.panel{background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:var(--shadow)}.tag{display:inline-block;padding:3px 11px;border-radius:30px;font-size:12px;font-weight:800;color:#087ea6;background:var(--ice)}.media{display:flex;justify-content:center;align-items:center;overflow:hidden;background:var(--soft);border-radius:14px;width:100%;aspect-ratio:16/10}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media.is-placeholder{background:linear-gradient(135deg,#e2f7fb,#caeaf5 62%,#e7f7fc);position:relative}.media-pattern{position:absolute;inset:0;background:radial-gradient(ellipse at 78% 22%,rgba(37,200,209,.22) 0 12%,transparent 12.2%),linear-gradient(140deg,transparent 42%,rgba(255,255,255,.5) 42.2% 42.8%,transparent 43%),radial-gradient(ellipse at 18% 80%,rgba(23,135,219,.12),transparent 54%)}.media-wide{aspect-ratio:16/8}.media-square{aspect-ratio:4/3}.media-tall{aspect-ratio:3/4;max-width:300px}.hero{background:linear-gradient(115deg,#fff 26%,#e9faff 100%);border-bottom:1px solid var(--border);position:relative;overflow:hidden}.hero::after{content:"";position:absolute;width:360px;height:360px;right:-170px;top:-180px;border:65px solid rgba(37,200,209,.09);border-radius:50%;pointer-events:none}.hero-inner{padding-block:66px;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center;position:relative;z-index:1}.hero h1{max-width:630px;margin:0 0 18px}.hero p{font-size:16px;max-width:540px;color:var(--ink);margin-bottom:22px}.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:18px}.hero-art .media{aspect-ratio:16/10;border-radius:22px;box-shadow:0 30px 60px rgba(23,75,120,.12)}.hero-side-note{display:flex;gap:11px;align-items:center;margin-top:16px;color:var(--muted);font-size:13px}.small-dot{width:8px;height:8px;background:var(--cyan);border-radius:100%;flex:none}.section-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.feature-card{border:1px solid var(--border);border-radius:18px;padding:25px;background:#fff;transition:transform .2s,box-shadow .2s;min-height:225px}.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.feature-card h3{font-size:19px;margin:10px 0}.feature-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0 0 13px}.card-number{font-weight:900;font-size:13px;letter-spacing:.1em;color:var(--cyan)}.feature-card a{font-weight:800;color:var(--blue);font-size:13px}.split{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:42px}.split.reverse .split-image{order:-1}.split-image .media{aspect-ratio:16/10}.split-text>p{max-width:520px}.soft-band{background:var(--soft);border-block:1px solid var(--border)}.article-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:26px}.article-feature{padding:26px;background:#fff;border-radius:20px;border:1px solid var(--border)}.article-feature .media{margin-bottom:18px}.article-feature h3{font-size:23px}.article-list{display:grid;gap:14px}.article-list>a{padding:20px 22px;border:1px solid var(--border);border-radius:16px;background:#fff;display:flex;flex-direction:column;justify-content:center}.article-list strong{font-size:17px;color:var(--title)}.article-list small{color:var(--muted);font-size:13px;margin-top:5px}.article-list>a:hover strong{color:var(--blue)}.pill-links{display:flex;flex-wrap:wrap;gap:11px}.pill-links a{display:inline-flex;border-radius:30px;border:1px solid #c9e5ef;padding:7px 15px;font-weight:700;font-size:14px;background:#fff}.pill-links a:hover{border-color:var(--sky);color:var(--blue)}.notice{font-size:14px;padding:20px 24px;background:#effaff;border-left:4px solid var(--cyan);border-radius:0 12px 12px 0;color:var(--deep)}
/* inner editorial pages */
.page-head{padding-block:51px 45px;background:linear-gradient(120deg,#fff,#eaf8fc);border-bottom:1px solid var(--border)}.page-head h1{font-size:clamp(25px,3vw,34px);margin:0 0 15px;max-width:850px}.page-head p{max-width:760px;font-size:16px;margin:0;color:var(--ink)}.breadcrumbs{font-size:13px;color:var(--muted);margin-bottom:18px}.breadcrumbs a{color:var(--blue)}.editorial{padding-top:42px;padding-bottom:65px}.editorial article{max-width:820px}.editorial h2{margin:37px 0 15px}.editorial h3{margin:24px 0 10px}.editorial p{margin-bottom:17px}.editorial ul,.editorial ol{padding-left:1.4em}.editorial li{margin:7px 0}.editorial .media{margin:26px 0 30px}.editorial .article-intro{font-size:18px;line-height:1.85;color:var(--deep)}.numbered{counter-reset:item;display:grid;gap:14px}.numbered>.item{background:#fff;padding:22px 24px;border:1px solid var(--border);border-radius:16px}.numbered .step{color:var(--blue);font-weight:900;font-size:13px}.insight-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:24px 0}.insight-grid>div{background:#fff;border:1px solid var(--border);border-radius:16px;padding:20px}.insight-grid h3{margin-top:0}.insight-grid p{margin-bottom:0}.comparison{overflow-x:auto;margin:24px 0}.comparison table{width:100%;border-collapse:collapse;min-width:570px;background:#fff;border:1px solid var(--border);font-size:14px}.comparison th{text-align:left;background:#dcf3fa;color:var(--title);font-size:14px}.comparison th,.comparison td{padding:13px 17px;border:1px solid var(--border);vertical-align:top}.quote-box{padding:25px 30px;background:#e5f7fc;border-radius:18px;border-left:5px solid var(--cyan);color:var(--deep);font-size:18px;font-weight:700;margin:25px 0}.topic-strip{border-left:3px solid var(--blue);padding-left:20px;margin:23px 0}.related{margin-top:49px;padding-top:27px;border-top:1px solid var(--border)}.related h2{font-size:22px}.related-links{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related-links a{padding:16px;border:1px solid var(--border);border-radius:12px;background:#fff;color:var(--deep);font-size:14px;font-weight:700;display:flex;justify-content:space-between;align-items:center;gap:8px}.related-links a:hover{border-color:var(--cyan);color:var(--blue)}.qa{background:#fff;border:1px solid var(--border);border-radius:14px;margin:10px 0;padding:0 19px}.qa summary{cursor:pointer;font-weight:800;padding:15px 0;color:var(--title)}.qa p{border-top:1px solid var(--border);padding-top:12px;margin-bottom:16px}.topic-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px}.topic-cards .feature-card{min-height:0}
.site-footer{background:var(--footer);color:#eaf7ff;padding-top:55px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:70px;padding-bottom:40px}.footer-grid p{font-size:14px;max-width:380px;color:#c9e1ef}.footer-grid .fine{font-size:12px;color:#a8cede}.footer-brand .brand-logo{height:38px}.site-footer .brand-fallback{color:#fff}.footer-grid h2{color:#fff;font-size:16px;margin-bottom:16px}.footer-grid>div>a:not(.footer-brand){display:block;color:#dbf0fa;font-size:14px;margin:7px 0}.footer-grid a:hover{color:#fff;text-decoration:underline}.footer-bottom{border-top:1px solid rgba(255,255,255,.16);display:flex;justify-content:space-between;gap:20px;align-items:center;font-size:12px;padding-block:17px;color:#bcdae9}
@media(max-width:980px){.site-header{height:61px}.header-inner{justify-content:space-between;gap:10px}.menu-toggle{display:flex}.desktop-nav{display:none}.brand{position:absolute;left:50%;transform:translateX(-50%);min-width:0;justify-content:center}.brand-logo{height:29px;max-width:145px}.brand-fallback{font-size:20px}.enter-btn{height:39px;padding:0 13px;min-width:0;font-size:12px}.hero-inner{gap:25px}.section-grid{grid-template-columns:repeat(2,1fr)}.bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;justify-content:space-around;z-index:25;height:64px;background:#fff;border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;flex:1;font-size:11px;font-weight:700;color:var(--muted)}.bottom-nav a span{font-size:22px;line-height:1.35}.bottom-nav a[aria-current]{color:var(--blue)}.back-top{bottom:81px}.site-footer{padding-bottom:64px}}
@media(max-width:680px){body{font-size:15px}.shell{padding-inline:16px}.page-section{padding-block:28px}.section-top{align-items:start;flex-direction:column;gap:7px}.hero-inner{display:flex;flex-direction:column-reverse;align-items:stretch;gap:24px;padding-block:28px 36px}.hero h1{font-size:29px}.hero p{font-size:15px}.hero-art .media{aspect-ratio:16/9;max-height:220px}.hero-side-note{margin-top:9px}.section-grid{grid-template-columns:1fr;gap:12px}.feature-card{min-height:0;padding:20px}.split,.article-grid,.footer-grid{grid-template-columns:1fr;gap:18px}.split.reverse .split-image{order:0}.split-image .media{max-height:205px}.article-feature{padding:18px}.article-feature h3{font-size:20px}.article-list>a{padding:15px}.page-head{padding-block:29px}.page-head h1{font-size:27px}.page-head p{font-size:15px}.editorial{padding-top:24px;padding-bottom:40px}.editorial h2{margin-top:30px}.editorial .article-intro{font-size:16px}.insight-grid,.topic-cards{grid-template-columns:1fr}.related-links{grid-template-columns:1fr}.quote-box{padding:18px 20px;font-size:16px}.footer-grid{gap:20px;padding-bottom:25px}.footer-bottom{flex-direction:column;align-items:start;gap:3px}.media-tall{max-height:300px}.enter-btn span{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}