/* 开云体育：本地 CSS，无外部依赖 */
:root{--bg:#f5fbff;--surface:#fff;--soft:#eaf7fc;--pale:#dff5fb;--cyan:#25c8d1;--sky:#25b6e8;--blue:#1787db;--navy:#174b78;--heading:#173b60;--body:#2d4359;--muted:#687f93;--line:#dcebf3;--footer:#123653;--shadow:0 14px 40px rgba(24,80,114,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--bg);color:var(--body);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.8;font-size:16px}body.drawer-open{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%}.wrap{max-width:1160px;margin:0 auto;padding-left:24px;padding-right:24px}.skip-link{position:absolute;top:-100px;left:16px;z-index:60;background:white;padding:10px}.skip-link:focus{top:8px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.site-header{position:sticky;top:0;background:rgba(255,255,255,.97);z-index:30;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{min-height:72px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:10px;flex:none;min-width:145px}.brand img{display:block;max-width:160px;width:auto;height:auto;max-height:38px;object-fit:contain}.brand-mark{display:grid;place-items:center;height:36px;width:36px;border-radius:12px;background:linear-gradient(135deg,var(--cyan),var(--blue));font-weight:800;color:white;font-size:24px}.brand-name{display:grid;font-weight:800;color:var(--heading);line-height:1.3;font-size:17px}.brand-name small{font-size:9px;letter-spacing:.16em;color:var(--blue)}.desktop-nav{display:flex;flex:1;align-items:center;justify-content:flex-end;gap:clamp(10px,1.4vw,22px)}.desktop-nav a{font-size:14px;white-space:nowrap;font-weight:700;color:var(--navy);padding:22px 0;position:relative}.desktop-nav a:hover,.desktop-nav a[aria-current]{color:var(--blue)}.desktop-nav a[aria-current]:after{content:"";position:absolute;bottom:0;left:0;right:0;height:3px;background:var(--cyan)}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:82px;min-height:42px;padding:0 20px;border-radius:999px;background:linear-gradient(110deg,#25c8d1,#25b6e8,#1787db);color:white;font-weight:700;white-space:nowrap;box-shadow:0 8px 20px rgba(23,135,219,.16)}.main-btn:hover{filter:brightness(.96);transform:translateY(-1px)}.header-cta{font-size:14px;flex:none}.menu-trigger{display:none;background:none;border:0;padding:9px;width:42px;height:42px;flex-direction:column;justify-content:space-around}.menu-trigger span{height:2px;width:23px;background:var(--heading);display:block}.drawer-scrim{position:fixed;inset:0;background:rgba(12,38,58,.48);z-index:39;visibility:hidden;opacity:0;pointer-events:none;transition:opacity .2s,visibility .2s}.mobile-drawer{position:fixed;top:0;bottom:0;left:0;width:min(86vw,340px);z-index:40;background:white;transform:translateX(-104%);transition:transform .24s;overflow-y:auto;padding:22px 22px 34px;box-shadow:var(--shadow)}.drawer-open .mobile-drawer{transform:translateX(0)}.drawer-open .drawer-scrim{visibility:visible;opacity:1;pointer-events:auto}.drawer-top{display:flex;justify-content:space-between;align-items:center;gap:12px}.drawer-top strong{color:var(--heading);font-size:18px}.drawer-top strong span{font-size:9px;display:block;color:var(--blue)}.drawer-close{font-size:32px;border:0;background:none;cursor:pointer;color:var(--heading)}.drawer-label{font-size:12px;font-weight:800;color:var(--blue);margin:24px 0 3px;border-bottom:1px solid var(--line)}.mobile-drawer a{display:block;padding:9px 0;font-weight:650}.drawer-home{margin-top:20px;color:var(--blue)}.bottom-nav{display:none}
h1,h2,h3,h4{color:var(--heading);line-height:1.36;margin-top:0;letter-spacing:-.018em}h1{font-size:clamp(30px,3.5vw,40px);margin-bottom:19px}h2{font-size:clamp(23px,2.4vw,26px)}h3{font-size:19px}p{margin:0 0 16px}section{margin-block:42px}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.13em;color:var(--blue);font-weight:800;display:block;margin-bottom:11px}.lede{font-size:17px;color:#42617a;line-height:1.84}.hero{display:grid;grid-template-columns:1.04fr .96fr;gap:42px;align-items:center;margin:36px 0 48px;padding:46px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(130deg,#fff 48%,#e2f8fd);overflow:hidden}.hero p{max-width:600px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.text-btn{font-weight:800;color:var(--blue);display:inline-flex;align-items:center;padding:10px 4px}.media{display:flex;justify-content:center;align-items:center;width:100%;overflow:hidden;background:var(--soft);border-radius:14px;min-height:175px;border:1px solid #d6ebf6}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-placeholder{min-height:inherit;width:100%;padding:18px;display:grid;align-content:center;justify-items:center;gap:10px;text-align:center;font-weight:700;font-size:14px;color:#5586a1;background:linear-gradient(138deg,#e8f9fd,#d8ecfa)}.placeholder-shape{height:56px;width:88px;border-radius:15px;border:3px solid #b7dfec;transform:skewX(-10deg);background:linear-gradient(130deg,rgba(37,200,209,.13),rgba(23,135,219,.15))}.hero-media{min-height:260px;max-height:330px}.hero-media img{max-height:326px}.section-head{max-width:760px;margin-bottom:24px}.section-head p{color:var(--muted)}.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.topic-card{background:white;border:1px solid var(--line);border-radius:16px;padding:24px;display:flex;flex-direction:column;gap:10px;min-height:190px;transition:transform .2s,box-shadow .2s}.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.topic-card .num{font-size:13px;font-weight:800;color:var(--blue)}.topic-card h3{margin:0}.topic-card p{color:var(--muted);font-size:14px;margin:0}.topic-card .card-arrow{margin-top:auto;color:var(--blue);font-weight:800}.split{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:36px}.split .media{max-height:250px;min-height:190px}.split .media img{max-height:245px}.feature-panel{background:white;border:1px solid var(--line);border-radius:18px;padding:28px}.feature-panel ul{padding-left:20px;margin:10px 0 0}.feature-panel li{margin:6px 0}.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.article-list a{display:block;background:white;padding:22px;border:1px solid var(--line);border-radius:12px}.article-list a:hover{border-color:var(--cyan)}.article-list small{color:var(--blue);display:block;font-weight:700}.article-list strong{font-size:17px;color:var(--heading)}.article-list span{display:block;color:var(--muted);font-size:14px;margin-top:8px}.page-hero{margin-top:38px;margin-bottom:32px;padding:36px 40px;border-radius:20px;background:linear-gradient(115deg,#fff 20%,#e5f6fd);border:1px solid var(--line)}.page-hero h1{font-size:clamp(27px,3vw,34px)}.page-hero p{max-width:820px}.article-layout{display:grid;grid-template-columns:minmax(0,800px) minmax(180px,1fr);gap:36px;align-items:start}.prose{max-width:820px}.prose h2{margin-top:36px;margin-bottom:15px}.prose h3{margin-top:24px;margin-bottom:10px}.prose p{line-height:1.85}.prose ul,.prose ol{padding-left:24px}.prose li{margin-bottom:9px}.prose blockquote{border-left:4px solid var(--cyan);padding:10px 20px;background:var(--soft);margin:24px 0;color:var(--heading)}.reading-aside{position:sticky;top:98px;border:1px solid var(--line);background:white;padding:22px;border-radius:14px}.reading-aside h2{font-size:17px}.reading-aside a{display:block;font-size:14px;color:var(--navy);border-top:1px solid var(--line);padding:10px 0}.reading-aside a:hover{color:var(--blue)}.info-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.info-card{background:white;padding:24px;border:1px solid var(--line);border-radius:14px}.info-card p:last-child{margin-bottom:0}.info-card h3{margin-bottom:9px}.note{background:#e8f9fc;border-left:4px solid var(--cyan);padding:18px 22px;border-radius:0 12px 12px 0;margin:25px 0}.responsive-table{overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:12px}table{border-collapse:collapse;width:100%;background:white;font-size:15px}th,td{border-bottom:1px solid var(--line);text-align:left;padding:14px 17px;vertical-align:top}th{background:var(--soft);color:var(--heading);font-weight:800}tr:last-child td{border-bottom:0}.steps{counter-reset:step;display:grid;gap:14px;padding:0;list-style:none}.steps li{background:white;border:1px solid var(--line);border-radius:12px;padding:20px 22px 20px 68px;position:relative}.steps li:before{counter-increment:step;content:counter(step);position:absolute;top:18px;left:20px;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;background:var(--pale);color:var(--blue);font-weight:800}.feature-strip{background:var(--footer);border-radius:20px;color:#ebf8ff;padding:32px 36px}.feature-strip h2{color:white}.feature-strip p{color:#d6e8f2}.feature-strip .main-btn{margin-top:6px}.image-gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.image-gallery figure{margin:0;background:white;padding:14px;border:1px solid var(--line);border-radius:16px}.image-gallery figure .media{min-height:205px;max-height:240px}.image-gallery figure .media img{max-height:238px}.image-gallery figcaption{padding:15px 5px 4px;font-size:14px;color:var(--muted)}.image-gallery figcaption strong{display:block;color:var(--heading);font-size:17px}.related{background:#ebf8fd;border-radius:18px;padding:26px;margin:54px 0}.related h2{margin-bottom:18px}.related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.related-links a{display:grid;grid-template-columns:1fr auto;gap:4px 8px;background:white;padding:17px;border-radius:12px;border:1px solid var(--line)}.related-links a strong{color:var(--heading)}.related-links a span:nth-child(2){grid-column:1;grid-row:2;font-size:13px;color:var(--muted)}.related-links a span:last-child{grid-column:2;grid-row:1;color:var(--blue)}.faq details{background:white;border:1px solid var(--line);border-radius:12px;padding:17px 20px;margin-bottom:11px}.faq summary{cursor:pointer;color:var(--heading);font-weight:750}.faq details p{padding-top:13px;margin:0;color:var(--body)}.site-footer{background:var(--footer);color:#eaf7ff;margin-top:64px}.footer-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:50px;padding-top:47px;padding-bottom:32px}.site-footer h2{font-size:17px;color:#fff}.site-footer p{font-size:14px;color:#c5dce9}.footer-brand{font-weight:800;font-size:23px}.footer-brand span{display:block;color:#80dbe8;font-size:10px;letter-spacing:.2em}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:5px 12px;font-size:14px}.site-footer a:hover{color:#7ce4f6}.footer-bottom{border-top:1px solid rgba(255,255,255,.18);display:flex;justify-content:space-between;gap:18px;padding-top:17px;padding-bottom:20px;font-size:12px;color:#bfd4e4}
@media(max-width:1080px){.desktop-nav{gap:10px}.desktop-nav a{font-size:13px}.header-inner{gap:15px}.brand{min-width:110px}}
@media(max-width:980px){.desktop-nav{display:none}.menu-trigger{display:flex}.header-inner{min-height:60px;justify-content:space-between;position:relative}.brand{position:absolute;left:50%;transform:translateX(-50%);min-width:0}.brand img{max-height:30px;max-width:125px}.brand-name{font-size:14px}.brand-name small{font-size:8px}.header-cta{min-height:40px;padding:0 14px;font-size:13px}.article-layout{grid-template-columns:1fr}.reading-aside{position:static}.reading-aside a{display:inline-block;margin-right:18px;border:0}.footer-grid{gap:24px}}
@media(max-width:680px){body{font-size:15px}.wrap{padding-left:16px;padding-right:16px}.site-header .header-inner{padding-left:12px;padding-right:12px}.header-cta{padding:0 13px;min-width:70px}.brand img{max-width:110px;max-height:28px}.brand-name{font-size:13px}.brand-mark{height:30px;width:30px}.hero{grid-template-columns:1fr;gap:21px;padding:22px;margin:20px 0 32px}.hero .hero-media{order:-1;min-height:170px;max-height:230px}.hero .hero-media img{max-height:225px}.hero h1{font-size:28px}.page-hero{margin-top:22px;padding:25px 21px}.page-hero h1{font-size:26px}h2{font-size:21px}h3{font-size:17px}.lede{font-size:15.5px}.topic-grid,.article-list,.info-grid,.image-gallery,.split,.related-links{grid-template-columns:1fr}.topic-card{min-height:0;padding:20px}.split{gap:20px}.split .media{min-height:155px;max-height:195px}.split .media img{max-height:190px}.image-gallery figure .media{min-height:155px;max-height:195px}.image-gallery figure .media img{max-height:190px}.feature-panel{padding:21px}.related{padding:19px;margin:35px 0}.reading-aside{padding:17px}.responsive-table{font-size:14px}th,td{padding:11px;min-width:115px}.footer-grid{grid-template-columns:1fr;gap:19px;padding-top:34px}.footer-bottom{flex-wrap:wrap;padding-bottom:85px}.bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;background:#fff;z-index:25;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);box-shadow:0 -6px 20px rgba(10,51,83,.06)}.bottom-nav a{padding:12px 4px;text-align:center;font-size:13px;color:var(--navy);font-weight:700}.bottom-nav a[aria-current]{color:var(--blue)}section{margin-block:30px}.site-footer{margin-top:40px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important}}