/* KAIYUN SPORTS — responsive editorial design */
:root{--bg:#f5fbff;--paper:#fff;--mist:#eaf7fc;--aqua:#25c8d1;--sky:#25b6e8;--blue:#1787db;--deep:#174b78;--ink:#173b60;--body:#2d4359;--muted:#687f93;--line:#dcebf3;--shadow:0 16px 45px rgba(24,79,113,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:var(--deep);text-decoration:none}a:hover{color:var(--blue)}button{font:inherit;cursor:pointer}img{display:block;max-width:100%;height:auto}h1,h2,h3,h4{color:var(--ink);line-height:1.36;margin:0 0 .7em}h1{font-size:clamp(27px,3.2vw,40px);letter-spacing:-.04em}h2{font-size:clamp(20px,2.2vw,26px)}h3{font-size:19px}p{margin:0 0 1.12em}ul,ol{padding-left:1.5em}li{margin:.3em 0}.wrap{width:min(1160px,calc(100% - 48px));margin-inline:auto}.narrow{max-width:820px}.section{padding:38px 0}.section + .section{padding-top:14px}.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:800;color:#147ca6;margin-bottom:14px}.lead{font-size:17px;line-height:1.82;color:#49627a}.muted{color:var(--muted)}.kicker{color:var(--blue);font-weight:800;font-size:13px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}.section-heading h2{margin-bottom:0}.text-link{font-weight:700;color:#126faf;white-space:nowrap}.pill{display:inline-flex;border-radius:999px;background:#dff5fb;color:#116b96;padding:5px 13px;font-size:13px;font-weight:700}.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-size:14px;font-weight:700;white-space:nowrap;box-shadow:0 9px 20px rgba(20,145,203,.15)}.main-btn:hover{color:white;filter:brightness(1.08)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-line{height:72px;display:flex;align-items:center;gap:22px}.brand{display:inline-flex;align-items:center;flex:0 0 auto;position:relative;max-width:196px}.brand-logo{max-width:190px;height:38px;display:flex;align-items:center}.brand-logo img{height:auto;max-height:38px;width:auto;max-width:190px;object-fit:contain}.brand-fallback{display:none;font-size:18px;line-height:1;color:var(--deep);font-weight:900;letter-spacing:-.03em}.brand-fallback b{color:var(--aqua)}.brand:has(.placeholder) .brand-fallback{display:block}.brand:has(.placeholder) .brand-logo{display:none}.desktop-nav{display:flex;justify-content:center;flex:1;align-items:center;gap:clamp(10px,1.4vw,23px)}.nav-link{color:var(--deep);font-size:14px;font-weight:700;white-space:nowrap;line-height:70px;border-bottom:3px solid transparent}.nav-link:hover,.nav-link.is-active{color:var(--blue)}.nav-link.is-active{border-bottom-color:var(--aqua)}.menu-toggle{display:none;flex:0 0 40px;width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:10px}.menu-toggle span{display:block;width:100%;height:2px;margin:4px 0;background:var(--deep)}.entry-btn{margin-left:auto}.skip-link{position:absolute;top:-100px;left:10px;background:white;padding:8px;z-index:1000}.skip-link:focus{top:5px}.drawer-overlay{position:fixed;inset:0;background:rgba(10,40,61,.48);opacity:0;visibility:hidden;pointer-events:none;z-index:110;transition:opacity .25s,visibility .25s}.drawer{position:fixed;z-index:111;left:0;top:0;bottom:0;width:min(86vw,340px);background:#fff;box-shadow:var(--shadow);transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .25s,visibility .25s;display:flex;flex-direction:column}.drawer-open .drawer-overlay{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .drawer{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{padding:20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.drawer-brand{font-weight:900;color:var(--deep)}.drawer-brand small{display:block;font-size:10px;letter-spacing:.13em}.drawer-close{width:38px;height:38px;border:1px solid var(--line);background:var(--bg);border-radius:10px;font-size:28px;line-height:1}.drawer-scroll{overflow-y:auto;padding:10px 20px 30px}.drawer-group{padding:16px 0;border-bottom:1px solid var(--line)}.drawer-group strong{display:block;font-size:13px;color:var(--blue);margin-bottom:6px}.drawer-group a{display:block;padding:6px 0;font-size:15px}
.hero{background:linear-gradient(120deg,#eaf9fc 0%,#f6fcff 55%,#e4f6ff 100%);padding:45px 0 38px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:38px;align-items:center}.hero-content{max-width:580px}.hero-content h1{margin-bottom:20px}.hero p{max-width:560px}.hero-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:20px}.outline-btn{display:inline-flex;padding:7px 20px;border-radius:999px;border:1px solid #a2d7e9;color:var(--deep);font-weight:700;font-size:14px}.hero-media{height:290px;border-radius:24px;background:linear-gradient(145deg,#b9edf4,#d4eeff);box-shadow:var(--shadow)}.hero-media img{width:100%;height:100%;object-fit:contain}.media{width:100%;height:192px;display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:14px;background:var(--mist)}.media img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;object-position:center}.media.placeholder{background:linear-gradient(120deg,#d9f4f9,#ecf9ff);position:relative}.placeholder-mark{width:88px;height:88px;border:2px solid rgba(24,135,181,.12);border-radius:25px;transform:rotate(-14deg);background:linear-gradient(135deg,rgba(37,200,209,.13),rgba(23,135,219,.12))}.media-tall{height:250px}.media-small{height:155px}.media-wide{height:240px}.media-phone{height:320px}.feature-grid{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:18px}.panel,.card{background:var(--paper);border:1px solid var(--line);border-radius:17px;box-shadow:0 8px 23px rgba(32,91,123,.035);overflow:hidden}.card{padding:20px}.card h3{margin-top:12px}.card p{color:#557087;font-size:15px}.card a.link-title{font-weight:800;font-size:18px}.card-media{margin:-20px -20px 18px;border-radius:16px 16px 0 0}.card .eyebrow{margin:0}.panel{padding:27px}.panel h2{margin-bottom:16px}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.topic{padding:22px;border:1px solid var(--line);border-radius:16px;background:#fff;transition:transform .2s,border-color .2s}.topic:hover{transform:translateY(-2px);border-color:#9edbea}.topic strong{display:block;color:var(--ink);font-size:18px;margin-bottom:7px}.topic span{font-size:14px;color:var(--muted)}.topic .arrow{color:var(--blue);font-size:20px}.split{display:grid;grid-template-columns:1.03fr .97fr;gap:26px;align-items:center}.band{background:#e7f5fb;border-top:1px solid #d7ecf3;border-bottom:1px solid #d7ecf3}.article-intro{padding:43px 0 26px;background:linear-gradient(130deg,#e6f7fb,#fff)}.article-intro .lead{max-width:760px}.crumbs{color:var(--muted);font-size:13px;margin-bottom:19px}.crumbs a{color:var(--deep)}.article-body{font-size:16px;line-height:1.82}.article-body h2{margin:35px 0 16px}.article-body h3{margin:24px 0 11px}.article-body p{margin-bottom:18px}.article-body .callout{border-left:4px solid var(--aqua);padding:17px 20px;background:#edf9fc;border-radius:0 12px 12px 0;margin:25px 0}.article-body .callout p:last-child{margin:0}.article-layout{display:grid;grid-template-columns:minmax(0,780px) minmax(220px,1fr);gap:37px;align-items:start}.aside-panel{position:sticky;top:100px;padding:20px;border:1px solid var(--line);border-radius:14px;background:#fff}.aside-panel h2{font-size:18px}.aside-panel a{display:block;padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}.compare .panel{height:100%}.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.strip>div{padding:20px;background:#fff;border:1px solid var(--line);border-radius:13px}.strip strong{display:block;color:var(--ink);font-size:18px}.strip p{font-size:14px;margin:8px 0 0}.flow-steps{counter-reset:steps;display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.flow-steps>div{counter-increment:steps;background:#fff;padding:22px;border:1px solid var(--line);border-radius:15px}.flow-steps>div:before{content:'0' counter(steps);display:block;color:var(--blue);font-size:26px;font-weight:800}.data-table{width:100%;border-collapse:collapse;margin:20px 0 27px;background:white;font-size:15px}.data-table th,.data-table td{border:1px solid var(--line);padding:12px 15px;text-align:left;vertical-align:top}.data-table th{background:#dff5fb;color:var(--ink)}.notice{border:1px solid #c7e9ee;border-radius:16px;background:#f2fbfe;padding:20px}.notice h3{margin:0 0 8px}.faq details{padding:17px 0;border-bottom:1px solid var(--line)}.faq summary{font-weight:800;color:var(--ink);cursor:pointer;line-height:1.5}.faq details p{margin:12px 0 0}.tag-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:15px}.tag-row a{background:#e9f8fb;border:1px solid #d1eff3;padding:5px 14px;border-radius:99px;font-size:13px}.editor-list{display:grid;grid-template-columns:1fr 1fr;gap:15px}.editor-list a{display:block;padding:17px 20px;background:#fff;border-radius:13px;border:1px solid var(--line)}.editor-list b{display:block}.editor-list span{font-size:14px;color:var(--muted)}.site-footer{background:#123653;color:#eaf7ff;margin-top:40px;padding-top:42px;font-size:14px}.site-footer h2{color:#fff;font-size:17px}.footer-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:38px}.footer-title{font-size:22px;font-weight:900;color:#fff}.footer-title small{font-size:11px;display:block;letter-spacing:.2em}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:4px 12px}.footer-links a,.footer-bottom a{color:#dcf4fb}.footer-bottom{margin-top:29px;padding:16px 0;border-top:1px solid rgba(255,255,255,.15);display:flex;justify-content:space-between;gap:15px}.mobile-tabs{display:none}.to-top{position:fixed;bottom:25px;right:20px;width:43px;height:43px;border:0;border-radius:50%;color:white;background:#1787db;box-shadow:0 9px 25px #1787db44;opacity:0;pointer-events:none;transition:opacity .2s;z-index:90}.to-top.show{opacity:1;pointer-events:auto}.gallery-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.gallery-layout .media{height:215px}.gallery-layout .media-wide{height:285px}.timeline{border-left:3px solid #b5e6ef;padding-left:26px}.timeline>div{margin-bottom:23px;position:relative}.timeline>div:before{content:'';position:absolute;width:12px;height:12px;border:3px solid white;border-radius:50%;background:#1abbd1;left:-34px;top:7px;box-shadow:0 0 0 1px #b5e6ef}
@media(max-width:1080px){.desktop-nav{gap:10px}.nav-link{font-size:13px}.brand-logo{max-width:145px}.brand-logo img{max-width:145px}.header-line{gap:14px}}
@media(max-width:980px){.desktop-nav{display:none}.menu-toggle{display:block}.header-line{height:60px;justify-content:space-between}.brand{position:absolute;left:50%;transform:translateX(-50%);max-width:160px}.brand-logo{height:30px}.brand-logo img{max-height:30px;max-width:160px}.entry-btn{margin-left:auto;height:40px;padding:0 15px}.hero-grid{gap:20px}.article-layout{grid-template-columns:1fr}.aside-panel{position:static}.footer-grid{gap:23px}}
@media(max-width:680px){.wrap{width:calc(100% - 32px)}body{font-size:15px;line-height:1.78}h1{font-size:29px}h2{font-size:21px}h3{font-size:17px}.lead{font-size:15.5px}.section{padding:26px 0}.section+.section{padding-top:10px}.hero{padding:24px 0 28px}.hero-grid{grid-template-columns:1fr}.hero-content{order:2}.hero-visual{order:1}.hero-media{height:205px;border-radius:16px}.feature-grid,.topic-grid,.split,.compare,.gallery-layout,.editor-list,.footer-grid{grid-template-columns:1fr}.feature-grid{gap:13px}.split{gap:18px}.card{padding:17px}.card-media{margin:-17px -17px 15px}.strip{grid-template-columns:1fr 1fr}.flow-steps{grid-template-columns:1fr}.panel{padding:20px}.media{height:155px}.media-tall{height:192px}.media-wide{height:175px}.media-phone{height:255px}.article-intro{padding:26px 0 20px}.article-body{font-size:15.5px}.article-body h2{margin:28px 0 12px}.section-heading{align-items:start}.section-heading h2{max-width:70%}.data-table{font-size:13px}.data-table th,.data-table td{padding:10px}.footer-grid{gap:23px}.site-footer{padding-top:30px;margin-top:20px}.footer-bottom{flex-wrap:wrap;padding-bottom:78px}.mobile-tabs{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;height:57px;background:#fff;border-top:1px solid var(--line);z-index:95;box-shadow:0 -6px 20px #143b6010}.mobile-tabs a{display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}.to-top{bottom:70px;right:15px}.brand-fallback{font-size:15px}.entry-btn{font-size:12px;padding:0 12px}.header-line{gap:8px}.drawer{width:min(86vw,340px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}