/* 开云体育 · 原生响应式样式，无外部资源 */
:root{--bg:#f5fbff;--white:#fff;--soft:#eaf7fc;--cyan:#25c8d1;--sky:#25b6e8;--blue:#1787db;--deep:#174b78;--heading:#173b60;--body:#2d4359;--muted:#687f93;--line:#dcebf3;--footer:#123653;--radius:18px;--shadow:0 12px 34px rgba(23,75,120,.075)}*{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}body.drawer-open{overflow:hidden}a{color:var(--deep);text-decoration:none}a:hover{color:var(--blue)}button{font:inherit;cursor:pointer}img{max-width:100%;height:auto}h1,h2,h3{line-height:1.4;color:var(--heading);margin:0 0 18px}h1{font-size:38px;letter-spacing:-.025em}h2{font-size:25px}h3{font-size:19px}p{margin:0 0 17px}ul,ol{padding-left:1.4em}li{margin-bottom:8px}table{border-collapse:collapse;width:100%;font-size:15px}th,td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}th{background:#eaf7fc;color:var(--heading)}.wrap{width:min(1160px,calc(100% - 48px));margin:auto}.article-width{max-width:820px}.skip{position:absolute;top:-70px;left:10px;z-index:50;background:white;padding:10px}.skip:focus{top:8px}.site-header{background:#fff;box-shadow:0 2px 12px #174b7810;position:sticky;top:0;z-index:30}.top-inner{min-height:72px;display:flex;gap:22px;align-items:center}.brand{display:flex;align-items:center;gap:9px;flex-shrink:0;color:var(--heading);font-size:21px;font-weight:800;line-height:1.15;white-space:nowrap}.brand img{max-height:38px;max-width:158px;object-fit:contain}.brand small,.footer-brand small,.drawer-head small{display:block;font-size:9px;letter-spacing:.17em;font-weight:700;color:var(--muted)}.brand-symbol{display:grid;place-items:center;width:37px;height:37px;border-radius:12px;background:linear-gradient(125deg,var(--cyan),var(--blue));color:#fff;font-size:24px}.desktop-nav{display:flex;gap:18px;align-items:center;margin-left:auto;white-space:nowrap}.desktop-nav a{font-size:14px;color:var(--deep);font-weight:600;border-bottom:2px solid transparent;padding:20px 0}.desktop-nav a[aria-current],.desktop-nav a:hover{color:var(--blue);border-color:var(--cyan)}.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:white;font-weight:700;white-space:nowrap;font-size:14px}.main-btn:hover{color:#fff;filter:brightness(.96)}.menu-toggle{display:none;border:0;background:transparent;width:40px;height:40px;align-items:center;justify-content:center;flex-direction:column;gap:5px;flex-shrink:0}.menu-toggle span{display:block;width:23px;height:2px;background:var(--deep)}.drawer-shade{position:fixed;inset:0;background:#091d3188;z-index:39;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .25s,visibility .25s}.drawer{position:fixed;inset:0 auto 0 0;width:min(86vw,340px);background:#fff;z-index:40;transform:translateX(-101%);transition:transform .25s;overflow:auto;padding:22px}.drawer-open .drawer{transform:translateX(0)}.drawer-open .drawer-shade{opacity:1;visibility:visible;pointer-events:auto}.drawer-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:16px;color:var(--heading)}.drawer-close{border:0;background:#eaf7fc;border-radius:50%;width:35px;height:35px;font-size:24px;color:var(--deep)}.drawer nav p{margin:21px 0 3px;font-size:12px;font-weight:800;letter-spacing:.12em;color:var(--blue)}.drawer nav a{display:block;padding:10px 8px;border-bottom:1px solid var(--line);font-weight:600}.hero{padding:52px 0 20px}.hero-grid{display:grid;grid-template-columns:1.13fr .87fr;gap:36px;align-items:center}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.14em;color:#087eac;text-transform:uppercase;margin-bottom:12px}.hero h1{max-width:620px}.hero-lead{font-size:17px;max-width:590px}.hero-actions{display:flex;gap:13px;align-items:center;flex-wrap:wrap;margin-top:24px}.outline-btn{border:1px solid #a9dce9;border-radius:999px;padding:6px 22px;color:var(--deep);font-weight:700;background:white}.hero-art{min-height:310px;max-height:340px}.media{display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:15px;background:var(--soft);width:100%;height:205px}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-empty{background:linear-gradient(140deg,#eaf7fc,#dff5fb 55%,#d5eefb);position:relative}.placeholder-mark{width:30%;aspect-ratio:1;border:1px solid #b3e3ee;border-radius:50%;box-shadow:0 0 0 26px #ffffff50,0 0 0 48px #ffffff29}.section{padding:30px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}.section-head h2{margin:0}.section-head p{margin:5px 0 0;color:var(--muted)}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.card h3{margin:0 0 9px}.card p{color:var(--body);font-size:15px}.card .media{height:155px;margin-bottom:17px}.card-link{display:block;color:var(--heading)}.card-link:hover h3{color:var(--blue)}.text-link{font-weight:700;color:#087eb5;font-size:14px;display:inline-flex;gap:6px;align-items:center}.feature{display:grid;grid-template-columns:1fr 1fr;gap:27px;align-items:center;background:white;border:1px solid var(--line);padding:26px;border-radius:20px}.feature .media{height:248px}.feature.reverse .media{order:2}.feature p{max-width:540px}.tag{display:inline-flex;background:#dff5fb;color:#126b91;font-size:12px;font-weight:700;padding:4px 11px;border-radius:40px;margin-bottom:14px}.index-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.index-list li{margin:0}.index-list a{display:block;background:#fff;padding:17px 21px;border:1px solid var(--line);border-radius:12px;font-weight:700}.index-list span{display:block;font-size:13px;color:var(--muted);font-weight:400}.page-intro{padding:42px 0 15px}.page-intro h1{font-size:33px}.page-intro .lead{max-width:780px;font-size:17px}.breadcrumb{font-size:13px;display:flex;gap:10px;color:var(--muted);margin-bottom:18px}.prose{background:#fff;border:1px solid var(--line);border-radius:20px;padding:34px;margin-bottom:26px}.prose h2{margin:20px 0 14px}.prose h2:first-child{margin-top:0}.prose h3{margin-top:19px}.prose p:last-child{margin-bottom:0}.split{display:grid;grid-template-columns:1fr 1fr;gap:18px}.panel{border:1px solid var(--line);border-radius:16px;padding:24px;background:white}.panel h3{margin-top:0}.panel .media{height:175px;margin-bottom:16px}.quote{border-left:4px solid var(--cyan);background:#eaf7fc;padding:18px 22px;border-radius:0 12px 12px 0;margin:20px 0;color:var(--deep);font-weight:600}.note{background:var(--soft);border-radius:14px;padding:20px;margin:20px 0}.number-steps{counter-reset:steps;list-style:none;padding:0}.number-steps li{counter-increment:steps;position:relative;padding:12px 12px 14px 54px;border-bottom:1px solid var(--line)}.number-steps li:before{content:counter(steps);position:absolute;left:0;top:15px;border-radius:50%;width:35px;height:35px;display:grid;place-items:center;background:linear-gradient(120deg,var(--cyan),var(--blue));color:white;font-weight:800}.related{border-top:1px solid var(--line);margin:35px auto;padding:26px 0}.related-links{display:flex;flex-wrap:wrap;gap:12px}.related-links a{padding:10px 15px;border-radius:10px;background:white;border:1px solid var(--line)}.table-wrap{overflow-x:auto;margin:22px 0}.faq details{background:white;border:1px solid var(--line);margin:10px 0;border-radius:12px;padding:13px 19px}.faq summary{font-weight:700;color:var(--heading);cursor:pointer}.faq details p{margin:10px 0 0}.site-footer{background:var(--footer);color:#eaf7ff;margin-top:60px;padding:45px 0 14px;font-size:14px}.footer-grid{display:grid;grid-template-columns:1.1fr 1.2fr .8fr;gap:34px}.site-footer a{color:#eaf7ff}.footer-brand{font-size:21px;font-weight:800}.footer-brand small{color:#a2d5ed}.footer-links{display:flex;flex-wrap:wrap;column-gap:18px;row-gap:8px;margin-top:12px}.copyright{border-top:1px solid #ffffff2c;margin-top:20px;padding-top:14px;color:#bed6e5;font-size:12px}.bottom-nav{display:none}.back-top{position:fixed;right:22px;bottom:25px;border:0;border-radius:50%;width:42px;height:42px;background:var(--deep);color:#fff;opacity:0;visibility:hidden;transition:.2s;box-shadow:var(--shadow);z-index:20}.back-top.show{opacity:1;visibility:visible}@media(max-width:1100px){.desktop-nav{gap:11px}.desktop-nav a{font-size:13px}.top-inner{gap:14px}}@media(max-width:980px){.desktop-nav{display:none}.menu-toggle{display:flex}.brand{margin:auto}.top-inner{justify-content:space-between;min-height:60px}.header-action{height:40px;padding:0 13px}.brand img{max-height:30px;max-width:140px}.hero{padding-top:32px}.hero-grid{gap:22px}}@media(max-width:720px){body{font-size:15px}.wrap{width:calc(100% - 32px)}h1{font-size:29px}h2{font-size:21px}h3{font-size:18px}.hero-grid,.feature,.split,.footer-grid{grid-template-columns:1fr}.hero-grid .hero-art{order:-1}.hero-art{height:195px;min-height:0;max-height:230px}.hero-lead{font-size:15px}.section{padding:22px 0}.section-head{display:block}.card-grid{grid-template-columns:1fr}.card{padding:20px}.card .media{height:155px}.feature{padding:18px;gap:16px}.feature.reverse .media{order:0}.feature .media{height:180px}.index-list{grid-template-columns:1fr}.page-intro{padding:29px 0 11px}.page-intro h1{font-size:27px}.page-intro .lead{font-size:15px}.prose{padding:21px 19px;margin-bottom:18px}.footer-grid{gap:15px}.site-footer{margin-top:35px;padding-bottom:75px}.bottom-nav{display:flex;position:fixed;bottom:0;inset-inline:0;height:58px;background:#fff;border-top:1px solid var(--line);z-index:28;align-items:center;justify-content:space-around}.bottom-nav a{flex:1;text-align:center;font-size:13px;font-weight:700}.bottom-nav a[aria-current]{color:var(--blue)}.back-top{bottom:72px;right:15px}.table-wrap table{min-width:540px}.brand{font-size:18px}.brand small{font-size:8px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}