/* KAIYUN SPORTS · standalone responsive stylesheet */
:root{--bg:#f5fbff;--paper:#fff;--tint:#eaf7fc;--light:#dff5fb;--cyan:#25c8d1;--sky:#25b6e8;--blue:#1787db;--navy:#174b78;--heading:#173b60;--text:#2d4359;--muted:#687f93;--line:#dcebf3;--footer:#123653;--shadow:0 14px 38px rgba(23,75,120,.075)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;font-family:Arial,'PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.8}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}img{max-width:100%}.container{width:min(1160px,calc(100% - 48px));margin-inline:auto}h1,h2,h3{color:var(--heading);line-height:1.36;letter-spacing:-.02em}h1{font-size:clamp(30px,3.5vw,40px);margin:0 0 22px}h2{font-size:25px;margin:0 0 18px}h3{font-size:19px;margin:0 0 12px}p{margin:0 0 17px}ul,ol{padding-left:1.4em}li{margin-bottom:8px}.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 4px 20px rgba(11,45,80,.04)}.header-inner{height:72px;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:6px;flex-shrink:0;color:var(--heading);font-size:21px;font-weight:800;white-space:nowrap}.brand-image{height:38px;max-width:170px;display:flex;align-items:center}.brand-image img{width:auto;max-width:100%;max-height:100%;height:auto;object-fit:contain}.brand-image.media-placeholder{display:none}.brand:has(.brand-image img) .brand-fallback{display:none}.brand-fallback span{color:var(--sky)}.desktop-nav{display:flex;align-items:center;gap:clamp(9px,1.5vw,22px);margin-left:auto}.desktop-nav a{font-size:14px;font-weight:700;color:var(--navy);white-space:nowrap;padding:7px 0;border-bottom:2px solid transparent}.desktop-nav a.active,.desktop-nav a:hover{color:var(--blue);border-bottom-color:var(--cyan);text-decoration:none}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:82px;height:42px;padding:0 20px;border-radius:999px;background:linear-gradient(110deg,#25c8d1,#25b6e8,#1787db);color:#fff;font-weight:700;white-space:nowrap;box-shadow:0 6px 20px rgba(37,182,232,.19)}.main-btn:hover{color:#fff;text-decoration:none;filter:brightness(.96)}.header-cta{margin-left:auto;font-size:14px}.menu-toggle{display:none}.skip-link{position:absolute;top:-90px;left:16px;z-index:100;background:#fff;padding:10px}.skip-link:focus{top:8px}.nav-shade,.mobile-panel{display:none}.eyebrow{display:inline-flex;align-items:center;font-size:12px;font-weight:800;letter-spacing:.12em;color:#1474a8;text-transform:uppercase;margin-bottom:12px}.hero{padding:50px 0 42px}.hero-layout{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:36px}.hero-copy{max-width:620px}.hero-copy .lead{font-size:18px;line-height:1.85;color:#46677f}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.outline-btn{display:inline-flex;align-items:center;border:1px solid #badfe8;border-radius:999px;padding:9px 18px;color:var(--navy);font-weight:700;background:#fff}.outline-btn:hover{text-decoration:none;background:var(--tint)}.media{display:flex;align-items:center;justify-content:center;width:100%;height:220px;background:var(--tint);border-radius:14px;overflow:hidden}.media img{display:block;max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;object-position:center}.hero-media{height:320px;border-radius:22px;background:linear-gradient(135deg,#daf5fa,#eaf7fc 65%,#cdebf7)}.hero-media img{max-height:100%;max-width:100%}.media-placeholder{border:1px solid var(--line);background:radial-gradient(circle at 80% 20%,rgba(37,200,209,.14),transparent 36%),linear-gradient(125deg,#e4f8fc,#d7ecf8);position:relative}.placeholder-mark{width:76px;height:76px;border-radius:26px;border:2px solid rgba(23,135,219,.17);transform:rotate(-15deg);position:relative}.placeholder-mark:after{content:'';position:absolute;width:28px;height:28px;background:rgba(37,200,209,.23);border-radius:50%;left:22px;top:22px}.section{padding:34px 0}.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:20px}.section-head p{max-width:640px;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.card h3{margin-top:4px}.card p{color:#516b7e}.card a.readmore{font-size:14px;font-weight:800}.card-figure{padding:12px 12px 20px}.card-figure .media{height:170px;margin-bottom:18px}.card-figure h3,.card-figure p,.card-figure a{margin-left:10px;margin-right:10px}.stripe{background:#eaf7fc;border-block:1px solid #d7edf6}.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}.feature-row.reverse .media{order:2}.feature-row .media{height:250px}.pill-list{display:flex;gap:9px;flex-wrap:wrap;margin:17px 0}.pill-list a,.pill-list span{border:1px solid #cfebf1;border-radius:999px;padding:5px 13px;background:#fff;color:#326582;font-size:13px}.page-intro{background:linear-gradient(135deg,#e6f7fd,#f7fcff);border-bottom:1px solid var(--line);padding:48px 0 38px}.page-intro .lead{max-width:820px;font-size:18px;color:#46677f}.article{max-width:820px;margin:0 auto}.article p{margin-bottom:19px}.article h2{margin-top:37px}.article h3{margin-top:24px}.article .media{height:240px;margin:22px 0}.article-section{margin:0 0 34px}.split-content{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:36px;align-items:start}.aside-note{background:#fff;border:1px solid var(--line);border-left:4px solid var(--cyan);padding:22px;border-radius:12px}.aside-note h3{margin-top:0}.section-label{font-size:13px;color:#1582a5;font-weight:800;margin-bottom:14px;display:block}.comparison{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:24px 0}.comparison>div{border:1px solid var(--line);border-radius:16px;background:#fff;padding:22px}.comparison h3{margin-top:0}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:13px;margin:22px 0;background:#fff}table{border-collapse:collapse;width:100%;font-size:15px}th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#eaf7fc;color:var(--heading)}tr:last-child td{border-bottom:0}.related-links{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}.related-links a{background:#fff;border:1px solid var(--line);padding:9px 16px;border-radius:10px;font-weight:700;font-size:14px}.related-links a:hover{text-decoration:none;border-color:var(--sky)}.timeline{position:relative;border-left:2px solid #b8e8ef;padding-left:24px;margin-left:8px}.timeline>div{position:relative;margin-bottom:24px}.timeline>div:before{content:'';position:absolute;left:-32px;top:9px;width:12px;height:12px;border:2px solid #fff;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 1px var(--cyan)}.timeline h3{margin-bottom:5px}.numbered{counter-reset:chapter}.numbered>section{counter-increment:chapter;position:relative;padding-left:48px;margin-bottom:24px}.numbered>section:before{content:counter(chapter,decimal-leading-zero);position:absolute;left:0;top:2px;font-size:20px;font-weight:800;color:var(--blue)}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px 18px;margin:10px 0}.faq summary{font-weight:800;color:var(--heading);cursor:pointer}.faq details p{margin:11px 0 2px}.notice{border-radius:13px;background:#e5f7f8;border:1px solid #b7e7eb;padding:18px 22px}.site-footer{background:var(--footer);color:#eaf7ff;margin-top:52px;padding:44px 0 22px}.site-footer p{font-size:14px;opacity:.86;max-width:480px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:60px}.footer-brand{font-weight:800;font-size:22px;color:#fff}.footer-brand span{font-size:12px;color:#a5d9f1}.footer-links{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:12px}.footer-links a{color:#eaf7ff;font-size:14px}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding-top:18px;margin-top:30px;font-size:12px;color:#bcdae8}.back-top{position:fixed;bottom:28px;right:22px;width:42px;height:42px;background:var(--navy);color:#fff;border:0;border-radius:50%;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s}.back-top.show{opacity:1;pointer-events:auto}.bottom-nav{display:none}
@media(max-width:1050px){.desktop-nav{gap:11px}.desktop-nav a{font-size:13px}.header-inner{gap:17px}}@media(max-width:980px){.header-inner{height:60px;justify-content:space-between;position:relative}.desktop-nav{display:none}.menu-toggle{display:flex;border:0;background:transparent;flex-direction:column;justify-content:center;gap:5px;width:42px;height:42px;padding:9px}.menu-toggle span{height:2px;width:23px;background:var(--navy);border-radius:5px}.brand{position:absolute;left:50%;transform:translateX(-50%);font-size:18px}.brand-image{height:30px;max-width:140px}.header-cta{height:38px;padding:0 13px;min-width:78px;margin-left:auto}.nav-shade{display:block;position:fixed;inset:0;background:rgba(10,43,68,.4);z-index:70;visibility:hidden;opacity:0;pointer-events:none;transition:opacity .2s,visibility .2s}.mobile-panel{display:block;position:fixed;inset:0 auto 0 0;width:min(86vw,340px);z-index:71;background:#fff;transform:translateX(-103%);transition:transform .25s;overflow:auto;padding:20px 20px 45px;box-shadow:var(--shadow);visibility:hidden}.menu-open .nav-shade{visibility:visible;opacity:1;pointer-events:auto}.menu-open .mobile-panel{visibility:visible;transform:translateX(0)}body.menu-open{overflow:hidden}.panel-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:12px}.menu-close{border:0;background:var(--tint);font-size:27px;width:38px;height:38px;border-radius:10px;line-height:1}.panel-group{display:grid;margin:20px 0;gap:7px}.panel-group small{color:var(--blue);font-weight:800;letter-spacing:.09em}.panel-group a{padding:8px 11px;color:var(--heading);background:var(--bg);border-radius:9px}.bottom-nav{display:flex;position:fixed;z-index:45;inset:auto 0 0;height:57px;background:#fff;border-top:1px solid var(--line);justify-content:space-around;align-items:center}.bottom-nav a{font-size:14px;font-weight:700;color:var(--navy);padding:10px}.bottom-nav a.active{color:var(--blue)}body{padding-bottom:57px}.back-top{bottom:78px}}@media(max-width:700px){.container{width:calc(100% - 32px)}body{font-size:15px;line-height:1.78}h1{font-size:29px}h2{font-size:22px}h3{font-size:18px}.hero{padding:24px 0 25px}.hero-layout,.feature-row,.split-content{grid-template-columns:1fr;gap:22px}.hero-media{height:210px;order:-1}.hero-copy .lead,.page-intro .lead{font-size:16px}.page-intro{padding:32px 0 25px}.section{padding:25px 0}.section-head{display:block}.grid,.grid.two,.comparison,.footer-grid{grid-template-columns:1fr}.card{padding:20px}.feature-row.reverse .media{order:0}.feature-row .media,.article .media{height:185px}.card-figure .media{height:150px}.footer-grid{gap:25px}.site-footer{margin-top:35px}.footer-links{grid-template-columns:repeat(2,1fr)}.article h2{margin-top:29px}.header-cta{font-size:13px}.brand-fallback{font-size:17px}.section-head p{margin-bottom:10px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}