/* 开云体育 · 无外部依赖响应式样式 */
:root{--bg:#f5fbff;--white:#fff;--soft:#eaf7fc;--mist:#dff5fb;--cyan:#25c8d1;--sky:#25b6e8;--blue:#1787db;--navy:#174b78;--ink:#173b60;--body:#2d4359;--muted:#687f93;--line:#dcebf3;--footer:#123653;--radius:18px;--shadow:0 12px 36px rgba(22,87,128,.07)}
*{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}a{color:inherit;text-decoration:none}a:hover{color:#0b83b8}button{font:inherit}img{max-width:100%}.wrap{width:min(1160px,calc(100% - 48px));margin-inline:auto}.skip-link{position:absolute;top:-60px;left:16px;padding:8px;background:#fff;z-index:100}.skip-link:focus{top:8px}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}.header-inner{min-height:72px;display:flex;align-items:center;gap:27px}.brand{display:inline-flex;align-items:center;white-space:nowrap;min-width:0;color:var(--navy);font-weight:800;line-height:1.2}.brand-image{display:block;width:auto;max-width:178px;height:37px;object-fit:contain}.logo-fallback{display:flex;align-items:center;gap:10px;letter-spacing:1px;font-size:20px}.logo-emblem{display:inline-grid;place-items:center;width:35px;height:35px;border-radius:10px;background:linear-gradient(120deg,var(--cyan),var(--blue));color:#fff;font-weight:800}.desktop-nav{display:flex;align-items:center;gap:20px;margin-left:auto}.desktop-nav a{font-size:14px;white-space:nowrap;font-weight:700;color:var(--navy);position:relative;padding:22px 0}.desktop-nav a[aria-current=page]{color:#0b97c5}.desktop-nav a[aria-current=page]:after{content:'';position:absolute;bottom:13px;left:0;right:0;height:3px;background:var(--cyan);border-radius:2px}.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;text-decoration:none;white-space:nowrap;box-shadow:0 7px 16px rgba(23,135,219,.15)}.main-btn:hover{color:#fff;filter:brightness(.96)}.menu-toggle{display:none;background:none;border:0;width:42px;height:42px;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer}.menu-toggle span{display:block;width:21px;height:2px;background:var(--navy)}.drawer-overlay{position:fixed;inset:0;background:rgba(6,24,41,.52);opacity:0;visibility:hidden;pointer-events:none;z-index:70;transition:opacity .2s,visibility .2s}.mobile-drawer{position:fixed;top:0;bottom:0;left:0;width:min(86vw,340px);background:#fff;z-index:71;transform:translateX(-105%);visibility:hidden;transition:transform .25s,visibility .25s;overflow-y:auto;padding:22px 22px 40px;box-shadow:20px 0 40px rgba(0,0,0,.1)}.mobile-drawer a:not(.brand){display:block;padding:10px 4px;border-bottom:1px solid var(--line);font-size:15px}.drawer-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.drawer-close{border:0;background:var(--soft);color:var(--navy);border-radius:12px;width:38px;height:38px;font-size:28px;line-height:1;cursor:pointer}.drawer-group-title{font-size:13px;font-weight:800;color:#1589be;margin:23px 0 3px}.drawer-open .drawer-overlay{opacity:1;visibility:visible;pointer-events:auto}.drawer-open .mobile-drawer{transform:translateX(0);visibility:visible}.drawer-open{overflow:hidden}.hero{padding:52px 0 30px}.hero-panel{border-radius:24px;overflow:hidden;background:linear-gradient(126deg,#fff 2%,#e7f8fd 65%,#d5eefc);border:1px solid var(--line);display:grid;grid-template-columns:54% 46%;align-items:center;box-shadow:var(--shadow)}.hero-copy{padding:44px 48px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:#138fba;margin:0 0 10px}.hero h1{font-size:clamp(30px,3.3vw,40px);line-height:1.38;margin:0 0 17px;color:var(--ink)}.hero p,.page-lead{font-size:17px;line-height:1.85;color:#45657d}.hero-actions{display:flex;gap:13px;flex-wrap:wrap;margin-top:25px}.text-link{display:inline-flex;align-items:center;font-size:15px;font-weight:700;color:var(--navy);padding:8px 0}.hero-visual{padding:22px 26px 22px 0}.media{display:flex;justify-content:center;align-items:center;width:100%;height:230px;overflow:hidden;background:var(--soft);border-radius:14px}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.hero-media{height:300px;background:transparent}.media-fallback{flex-direction:column;gap:7px;text-align:center;padding:18px;color:#4b91ba;font-size:13px;font-weight:700;background:linear-gradient(125deg,#d8f5fa,#daedfc)}.media-symbol{font-size:44px;color:#25b6e8;line-height:1}.main-section{padding:26px 0 32px}.section-heading{margin-bottom:23px}.section-heading h2{font-size:26px;line-height:1.42;color:var(--ink);margin:0 0 8px}.section-heading>p:last-child:not(.eyebrow){margin:0;max-width:740px;color:var(--muted)}.section-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.topic-card{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:17px;padding:23px;min-width:0;box-shadow:var(--shadow)}.topic-card h3{font-size:19px;line-height:1.45;color:var(--ink);margin:6px 0 11px}.topic-card p{font-size:15px;margin:0 0 15px;flex:1}.topic-card .card-link{font-size:14px;font-weight:800;color:#0f8cbf;margin-top:auto}.card-index{font-size:12px;letter-spacing:.1em;color:#159dc2;font-weight:800}.split-panel{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:center;background:var(--white);border:1px solid var(--line);border-radius:18px;padding:26px}.split-panel h3{font-size:23px;margin:0 0 12px;color:var(--ink);line-height:1.45}.split-panel p{margin:0 0 14px}.mini-list{margin:16px 0;padding-left:20px}.mini-list li{margin:5px 0}.index-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.index-list a{display:block;background:#fff;border:1px solid var(--line);padding:17px 20px;border-radius:12px;font-weight:700;color:var(--ink)}.index-list a small{display:block;font-size:13px;font-weight:400;color:var(--muted);margin-top:4px}.info-band{background:linear-gradient(110deg,#def7f9,#e9f4fd);border-radius:18px;padding:26px 31px;margin:23px 0}.info-band h2,.info-band h3{color:var(--ink);margin:0 0 8px}.info-band p{margin:0}.page-head{padding:50px 0 28px}.page-head .wrap{max-width:1080px}.page-head h1{color:var(--ink);font-size:34px;line-height:1.4;margin:0 0 14px}.page-head p{max-width:800px;margin:0}.page-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(230px,1fr);gap:34px;align-items:start;padding-bottom:44px}.article{min-width:0;background:#fff;padding:28px 35px 40px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}.article h2{font-size:25px;color:var(--ink);line-height:1.45;margin:31px 0 13px}.article h2:first-child{margin-top:0}.article h3{font-size:19px;color:var(--ink);margin:23px 0 8px;line-height:1.45}.article p{margin:0 0 15px;line-height:1.82}.article ul,.article ol{padding-left:24px;margin:10px 0 21px}.article li{margin:7px 0}.article .media{margin:21px 0 27px}.article .tall-media{height:260px}.side-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;position:sticky;top:96px}.side-panel h2{font-size:17px;color:var(--ink);margin:0 0 15px}.side-panel a{display:block;border-top:1px solid var(--line);padding:11px 0;font-size:14px;color:#24658d}.side-panel a:hover{color:#0a9abf}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}.compare-box{border:1px solid var(--line);background:#f6fbff;border-radius:13px;padding:18px}.compare-box h3{margin:0 0 8px}.compare-box p{margin-bottom:7px}.feature-note{border-left:4px solid var(--cyan);background:#effbfd;padding:16px 20px;margin:20px 0;border-radius:0 10px 10px 0}.feature-note p:last-child{margin-bottom:0}.data-table{width:100%;border-collapse:collapse;margin:19px 0;font-size:14px}.data-table th,.data-table td{padding:12px 13px;border:1px solid var(--line);text-align:left;vertical-align:top}.data-table th{background:var(--soft);color:var(--ink)}.step-list{counter-reset:item;list-style:none!important;padding:0!important}.step-list li{counter-increment:item;border-bottom:1px solid var(--line);padding:15px 0 15px 45px;position:relative}.step-list li:before{content:counter(item);position:absolute;left:0;top:15px;width:30px;height:30px;background:var(--soft);border-radius:50%;display:grid;place-items:center;color:var(--blue);font-weight:800}.quote-card{background:#eff9fc;padding:22px;border-radius:14px;color:var(--navy);font-weight:700;margin:19px 0}.related{margin-top:36px;border-top:1px solid var(--line);padding-top:21px}.related h2{font-size:19px;margin:0 0 13px}.related-links{display:grid;gap:9px}.related-links a{display:flex;justify-content:space-between;gap:12px;padding:12px 15px;background:#f1fafc;border-radius:10px;color:#1a638a;font-weight:700;font-size:14px}.illustrated-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.illustrated-card{border:1px solid var(--line);border-radius:14px;padding:16px}.illustrated-card .media{height:170px;margin:0 0 14px}.illustrated-card h3{margin-top:0}.faq{border-bottom:1px solid var(--line);padding:13px 0}.faq h3{font-size:17px;margin:0 0 6px}.faq p{margin:0}.site-footer{background:var(--footer);color:#eaf7ff;padding:42px 0 16px;margin-top:25px}.footer-grid{display:grid;grid-template-columns:1.2fr .95fr 1fr;gap:40px}.footer-grid p{font-size:14px;color:#c6dfef}.footer-grid h2{font-size:17px;color:#fff;margin:0 0 10px}.footer-brand{color:#fff}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:6px 17px}.footer-links a{font-size:14px;color:#daecf7}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.16);padding-top:15px;margin-top:24px;gap:12px;font-size:12px;color:#c4d9e6}.back-top{position:fixed;right:22px;bottom:22px;border:0;border-radius:50%;width:40px;height:40px;background:var(--navy);color:#fff;font-size:22px;cursor:pointer;opacity:0;visibility:hidden;transition:opacity .2s;z-index:30}.back-top.visible{opacity:1;visibility:visible}.mobile-bottom{display:none}
@media(max-width:1100px){.desktop-nav{gap:12px}.desktop-nav a{font-size:13px}.header-inner{gap:15px}.brand-image{max-width:150px}.logo-fallback{font-size:17px}}
@media(max-width:980px){.site-header .menu-toggle{display:flex}.desktop-nav{display:none}.header-inner{min-height:60px;justify-content:space-between;gap:8px}.header-inner .brand{position:absolute;left:50%;transform:translateX(-50%)}.header-inner .brand-image{height:29px;max-width:137px}.header-inner .logo-fallback{font-size:16px;gap:5px}.header-inner .logo-emblem{width:27px;height:27px}.header-action{margin-left:auto;height:40px;padding:0 13px;font-size:13px}.hero{padding-top:30px}.hero-copy{padding:30px}.page-layout{grid-template-columns:minmax(0,1fr)}.side-panel{position:static;display:none}}
@media(max-width:700px){.wrap{width:calc(100% - 32px)}.hero-panel{grid-template-columns:1fr}.hero-visual{grid-row:1;padding:16px 16px 0}.hero-media{height:190px}.hero-copy{padding:20px 22px 26px}.hero h1{font-size:29px}.hero p,.page-lead{font-size:15px}.main-section{padding:19px 0 23px}.section-heading h2{font-size:22px}.section-grid{grid-template-columns:1fr;gap:13px}.topic-card{padding:19px}.split-panel{grid-template-columns:1fr;padding:19px;gap:14px}.split-panel .media{height:175px}.index-list{grid-template-columns:1fr}.page-head{padding:31px 0 19px}.page-head h1{font-size:27px}.page-layout{padding-bottom:22px}.article{padding:21px 19px 27px}.article h2{font-size:21px}.article h3{font-size:18px}.article p{font-size:15px}.compare-grid,.illustrated-grid{grid-template-columns:1fr}.data-table{font-size:13px}.data-table th,.data-table td{padding:9px 8px}.footer-grid{grid-template-columns:1fr;gap:22px}.site-footer{padding-bottom:90px}.footer-bottom{flex-direction:column}.mobile-bottom{position:fixed;bottom:0;left:0;right:0;z-index:40;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line);height:58px;box-shadow:0 -5px 22px rgba(24,83,128,.06)}.mobile-bottom a{display:grid;place-items:center;font-size:13px;color:var(--navy);font-weight:700}.mobile-bottom a[aria-current=page]{color:#079cc2}.back-top{bottom:72px}.info-band{padding:20px}.article .tall-media{height:190px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}