/* 开云体育 · 无第三方依赖的响应式样式 */
:root{--bg:#f5fbff;--paper:#fff;--soft:#eaf7fc;--mist:#dff5fb;--cyan:#25c8d1;--sky:#25b6e8;--blue:#1787db;--navy:#174b78;--dark:#173b60;--text:#2d4359;--muted:#687f93;--line:#dcebf3;--footer:#123653;--r:16px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif}body.drawer-open{overflow:hidden}a{color:var(--navy);text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:3px}button{font:inherit;cursor:pointer}img{max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--dark);line-height:1.38}h1{font-size:clamp(27px,3.3vw,40px);letter-spacing:-.035em}h2{font-size:clamp(21px,2.4vw,26px)}h3{font-size:19px}p{margin-bottom:1.15em}.wrap{max-width:1160px;margin-inline:auto;padding-inline:24px}.reading{max-width:820px}.skip-link{position:absolute;left:-9999px;top:3px;z-index:99;background:white;padding:8px}.skip-link:focus{left:16px}.site-header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.topline{height:72px;display:flex;align-items:center;gap:32px}.brand{display:flex;align-items:center;flex-shrink:0;min-width:140px}.brand img{max-height:38px;max-width:185px;width:auto;object-fit:contain}.brand-fallback{font-weight:900;line-height:1.1;font-size:24px;color:var(--blue)}.brand-fallback span{color:var(--cyan)}.brand-fallback small{display:block;letter-spacing:.16em;font-weight:600;font-size:9px;color:var(--navy)}.desktop-nav{display:flex;gap:20px;align-items:center;justify-content:center;flex:1;white-space:nowrap}.desktop-nav a{font-size:14px;font-weight:600;color:var(--navy);padding:22px 0 19px;border-bottom:3px solid transparent}.desktop-nav a:hover,.desktop-nav a.active{color:var(--blue);border-bottom-color:var(--cyan)}.main-btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;min-width:82px;height:42px;padding:0 20px;border-radius:999px;background:linear-gradient(110deg,#25c8d1,#25b6e8,#1787db);color:#fff;font-weight:700;line-height:1;white-space:nowrap;box-shadow:0 9px 19px rgba(23,135,219,.13)}.main-btn:hover{color:white;filter:brightness(.96)}.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:white;padding:10px;flex-direction:column;justify-content:space-evenly}.menu-toggle span{width:100%;height:2px;background:var(--navy);border-radius:2px}.drawer-backdrop{position:fixed;inset:0;z-index:39;background:rgba(12,38,64,.45);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s,visibility .2s}.drawer{position:fixed;z-index:40;top:0;bottom:0;left:0;width:min(86vw,340px);background:white;box-shadow:10px 0 30px #102e4b25;transform:translateX(-104%);visibility:hidden;transition:transform .2s,visibility .2s;display:flex;flex-direction:column}.drawer-open .drawer{transform:translateX(0);visibility:visible}.drawer-open .drawer-backdrop{visibility:visible;opacity:1;pointer-events:auto}.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line);color:var(--navy)}.drawer-head small{display:block;font-size:10px}.drawer-close{background:var(--soft);border:0;border-radius:10px;font-size:28px;width:38px;height:38px;line-height:1}.drawer-inner{overflow-y:auto;padding:12px 20px 32px}.drawer-inner p{color:var(--muted);font-weight:700;font-size:12px;margin:20px 0 3px;letter-spacing:.08em}.drawer-inner a{display:block;padding:9px 4px;border-bottom:1px solid var(--line);font-weight:600;font-size:14px}.eyebrow{display:inline-block;color:#078aaf;font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:12px}.hero{padding-block:48px 46px;background:linear-gradient(135deg,#f5fbff 10%,#e6f7fc 70%,#def3fa)}.hero-inner{display:grid;grid-template-columns:1.08fr .92fr;gap:46px;align-items:center}.hero h1{margin-bottom:20px;max-width:640px}.hero p{font-size:17px;max-width:620px}.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:24px}.soft-btn{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 20px;border:1px solid #b7dceb;border-radius:999px;background:white;font-weight:700}.media{display:flex;align-items:center;justify-content:center;width:100%;min-height:145px;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}.placeholder{background:radial-gradient(circle at 75% 30%,#a4e7ef,transparent 38%),linear-gradient(140deg,#d7f3fa,#bfe6f4 50%,#e8f9fd);border:1px solid #d0e9f3;color:#478ea8;text-align:center;font-weight:800;letter-spacing:.08em;padding:28px}.hero-media{height:310px;box-shadow:0 18px 35px rgba(31,102,150,.10)}.hero-media img{max-height:100%}.section{padding-block:36px 18px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}.section-head h2{margin-bottom:4px}.section-head p{margin-bottom:0;color:var(--muted)}.section-link{font-weight:700;white-space:nowrap;font-size:14px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:0 8px 22px rgba(21,82,127,.035)}.card h3{margin:8px 0}.card p{font-size:15px;color:var(--muted);margin:0}.card a.link{display:inline-block;margin-top:12px;font-weight:700}.card:hover{border-color:#b5e3ef}.card .media{height:175px;margin-bottom:16px}.icon-chip{display:inline-flex;align-items:center;padding:3px 10px;background:var(--mist);color:var(--navy);font-size:12px;font-weight:700;border-radius:99px}.editorial{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:start}.feature-panel{background:white;padding:28px;border:1px solid var(--line);border-radius:var(--r)}.feature-panel p:last-child{margin-bottom:0}.mini-index{display:grid;gap:10px}.mini-index a{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:16px 18px;background:white;border-radius:12px;border:1px solid var(--line);font-weight:700}.mini-index a span{color:var(--muted);font-size:13px;font-weight:400}.split{display:grid;grid-template-columns:1fr 1fr;gap:22px}.band{background:linear-gradient(110deg,#dff5fb,#ecf9fc);border:1px solid #cce8f2;padding:26px;border-radius:var(--r)}.band .media{height:210px}.article-head{padding:43px 0 22px}.article-head h1{font-size:clamp(26px,3vw,34px);max-width:850px;margin-bottom:16px}.lede{max-width:820px;color:#476277;font-size:17px}.article-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(200px,1fr);gap:42px;align-items:start}.prose h2{margin:36px 0 16px;padding-top:8px}.prose h3{margin:26px 0 10px}.prose p,.prose li{line-height:1.82}.prose ul,.prose ol{padding-left:23px}.prose li{margin-bottom:8px}.prose .media{height:255px;margin:20px 0}.sidebox{position:sticky;top:26px;border-radius:14px;background:white;border:1px solid var(--line);padding:20px}.sidebox strong{display:block;color:var(--dark);margin-bottom:12px}.sidebox a{display:block;padding:9px 0;font-size:14px;border-top:1px solid var(--line)}.highlight{background:var(--soft);border-left:4px solid var(--cyan);padding:18px 20px;border-radius:0 12px 12px 0;margin:22px 0}.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0}.compare>div{border:1px solid var(--line);background:white;border-radius:12px;padding:19px}.compare h3{margin:0 0 8px}.compare p{margin-bottom:0}.data-table{border-collapse:collapse;width:100%;margin:20px 0;font-size:15px}.data-table th,.data-table td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}.data-table th{background:#e9f7fc;color:var(--dark)}.data-table td{background:#fff}.steps{counter-reset:steps;padding-left:0!important;list-style:none}.steps li{position:relative;padding:14px 14px 14px 58px;background:white;border:1px solid var(--line);border-radius:12px;counter-increment:steps;margin-bottom:12px}.steps li:before{content:counter(steps,decimal-leading-zero);position:absolute;left:16px;color:var(--blue);font-weight:800}.related{margin:48px 0 58px;background:var(--soft);border:1px solid var(--line);border-radius:var(--r);padding:24px}.related>strong{font-size:20px;color:var(--dark)}.related>div{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.related a{background:white;border-radius:10px;padding:13px;display:flex;justify-content:space-between;gap:10px;font-size:14px;font-weight:700}.site-footer{margin-top:55px;background:var(--footer);color:#eaf7ff;padding-top:40px}.footer-grid{display:grid;grid-template-columns:1.5fr .75fr 1fr;gap:48px}.footer-grid p{font-size:14px;color:#d0e5f1}.footer-grid a{display:block;color:#def6ff;font-size:14px;margin:5px 0}.footer-grid strong{display:block;margin-bottom:10px}.footer-title{font-size:22px}.footer-title span{display:block;font-size:10px;letter-spacing:.2em}.footer-bottom{display:flex;justify-content:space-between;padding-block:15px;border-top:1px solid #ffffff30;margin-top:30px;color:#bfd6e5;font-size:12px}.footer-bottom a{color:#d7f4ff}.bottom-nav{display:none}details{border:1px solid var(--line);border-radius:10px;background:#fff;margin:10px 0;padding:12px 17px}summary{cursor:pointer;font-weight:700;color:var(--dark)}details p{margin:10px 0 0}blockquote{margin:20px 0;padding:16px 20px;border-left:4px solid var(--sky);background:var(--soft)}@media(max-width:1100px){.desktop-nav{gap:11px}.topline{gap:18px}.desktop-nav a{font-size:13px}}@media(max-width:980px){.desktop-nav{display:none}.menu-toggle{display:flex}.topline{justify-content:space-between;height:62px}.brand{min-width:0;position:absolute;left:50%;transform:translateX(-50%)}.brand img{max-height:30px;max-width:130px}.brand-fallback{font-size:20px}.nav-action{height:40px;font-size:13px;padding:0 14px}.hero-inner{gap:26px}.article-layout{display:block}.sidebox{position:static;margin-top:18px;display:none}}@media(max-width:700px){body{font-size:15px}.wrap{padding-inline:16px}.topline{height:60px}.nav-action{min-width:0}.hero{padding-block:30px}.hero-inner{grid-template-columns:1fr;gap:20px}.hero-inner .hero-copy{order:2}.hero-inner .hero-media{order:1}.hero-media{height:210px}.hero p,.lede{font-size:15px}.section{padding-block:24px 10px}.section-head{display:block}.section-head .section-link{display:inline-block;margin-top:8px}.cards{grid-template-columns:1fr;gap:12px}.card{padding:18px}.card .media{height:155px}.editorial,.split,.compare{grid-template-columns:1fr}.feature-panel{padding:20px}.band{padding:20px}.article-head{padding:29px 0 12px}.article-head h1{font-size:27px}.prose h2{margin-top:29px}.prose .media{height:185px}.data-table{font-size:13px}.data-table th,.data-table td{padding:9px}.related>div{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;gap:22px}.site-footer{padding-bottom:62px}.footer-bottom{gap:12px;flex-wrap:wrap}.bottom-nav{position:fixed;z-index:19;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px #12365312;padding-bottom:env(safe-area-inset-bottom)}.bottom-nav a{text-align:center;padding:10px 4px;font-size:13px;font-weight:700}.bottom-nav .active{color:var(--blue);background:#eaf7fc}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}