/* 开云体育：轻量阅读型版式 */
:root{--bg:#F6F8F8;--paper:#FFFFFF;--panel:#EAF0F2;--nav:#122E3B;--deep:#1A4050;--accent:#168E96;--link:#226D9D;--heading:#193946;--text:#374D58;--muted:#647981;--line:#D9E3E6;--footer:#0C2632}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:105px}body{margin:0;background:var(--bg);color:var(--text);font:16.5px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif}a{color:var(--link);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #23AAB1;outline-offset:3px}p{margin:0 0 1em}h1,h2,h3{color:var(--heading);line-height:1.36;margin:0 0 .6em}h1{font-size:clamp(34px,3.4vw,42px);letter-spacing:-.025em}h2{font-size:27px}h3{font-size:20px}ul,ol{padding-left:1.4em}li{margin:.22em 0}strong{font-weight:700}section{min-width:0}section+section{margin-top:60px}section[id],h2[id],h3[id]{scroll-margin-top:112px}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.skip-link{position:absolute;top:-100px;left:12px;z-index:20;padding:8px;background:white}.skip-link:focus{top:8px}.site-header{background:var(--nav);color:#fff;position:relative;z-index:10}.header-inner{max-width:1220px;min-height:76px;padding:0 28px;margin:auto;display:flex;align-items:center;gap:23px}.brand{display:flex;align-items:center;gap:9px;flex-shrink:0;text-decoration:none!important;color:#fff}.brand img{display:block;width:auto;height:auto;max-height:38px;max-width:145px;object-fit:contain}.brand small{font-size:9px;line-height:1.35;letter-spacing:.08em;max-width:63px;opacity:.85}.brand-text{font-size:18px;white-space:nowrap}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:clamp(7px,1.3vw,19px);flex:1;min-width:0}.desktop-nav a{font-size:13.5px;white-space:nowrap;color:#eef8f9;text-decoration:none;border-bottom:2px solid transparent;padding:10px 0}.desktop-nav a:hover,.desktop-nav a.is-current{border-color:#7DD2D1;font-weight:bold}.register-link{white-space:nowrap;padding:8px 13px;border:1px solid #80bbc1;border-radius:9px;color:#fff;text-decoration:none;font-size:13px}.mobile-menu-wrap,.mobile-nav,.mobile-nav-fallback{display:none}.main-wrap{max-width:1220px;margin:0 auto;padding:30px 28px 90px;min-width:0}.breadcrumbs{font-size:13px;color:var(--muted);display:flex;gap:10px;margin-bottom:30px}.breadcrumbs a{color:var(--muted)}.page-intro{max-width:850px;margin-bottom:42px}.eyebrow{font-size:12px;letter-spacing:.15em;color:var(--accent);text-transform:uppercase;font-weight:700;margin-bottom:10px}.lead{font-size:18px;color:var(--heading);line-height:1.8}.muted{color:var(--muted)}.paper{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:27px}.soft-panel{background:var(--panel);border-radius:11px;padding:24px}.dark-panel{background:var(--deep);color:#f1f7f8;border-radius:11px;padding:27px}.dark-panel h2,.dark-panel h3{color:white}.hero{display:grid;grid-template-columns:minmax(0,1.38fr) minmax(0,1fr);gap:37px;align-items:center}.hero h1{max-width:750px}.hero-links{display:flex;flex-wrap:wrap;gap:13px;margin-top:20px}.hero-links a{padding:8px 16px;border:1px solid var(--accent);border-radius:8px;text-decoration:none;font-weight:700}.image-holder{margin:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;width:100%;min-width:0;padding:8px;background:var(--panel);border-radius:12px}.image-holder img{display:block;width:auto;height:auto;max-width:100%;max-height:var(--image-limit,210px);object-fit:contain;object-position:center}.image-holder figcaption{font-size:12px;color:var(--muted);text-align:center}.image-holder--hero{--image-limit:290px}.image-holder--feature{--image-limit:240px}.image-holder--inline{--image-limit:180px}.image-holder--rules{--image-limit:210px}.image-holder--banner{--image-limit:190px}.image-holder--portrait{--image-limit:330px;max-width:310px;margin-inline:auto}.image-fallback{color:var(--muted);font-size:13px;text-align:center;padding:10px}.section-heading{display:flex;align-items:baseline;gap:18px;border-bottom:1px solid var(--line);padding-bottom:12px;margin-bottom:23px}.section-heading small{color:var(--muted)}.route-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.route-group{padding:21px;background:white;border-top:3px solid var(--accent);border-radius:4px 4px 10px 10px}.route-item+.route-item{border-top:1px solid var(--line);padding-top:13px;margin-top:13px}.route-item .num{font-size:12px;color:var(--accent);letter-spacing:.08em}.route-item h3{font-size:18px;margin:3px 0 7px}.route-item p{font-size:14px;margin:0}.split-2{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start}.split-even{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;align-items:center}.split-wide{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:30px;align-items:center}.mini-notes{display:grid;gap:18px}.mini-notes>div{padding-left:17px;border-left:3px solid var(--accent)}.reading-path{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;counter-reset:step}.reading-path a{display:block;background:white;border:1px solid var(--line);border-radius:10px;padding:18px;text-decoration:none;color:var(--heading);font-weight:bold}.reading-path a:before{counter-increment:step;content:'0' counter(step);display:block;font-size:13px;color:var(--accent);margin-bottom:8px}.reading-path span{display:block;font-weight:400;font-size:13px;color:var(--muted);margin-top:8px}.topic-index{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0 32px}.topic-index a{padding:6px 12px;border:1px solid var(--line);border-radius:7px;background:white;text-decoration:none;font-size:14px}.article{max-width:770px}.article p,.article li{line-height:1.85}.article h2{margin-top:38px}.article h3{margin-top:22px}.article-header{border-left:5px solid var(--accent);padding:5px 0 5px 19px;margin-bottom:28px}.article-layout{display:grid;grid-template-columns:205px minmax(0,1fr);gap:42px;align-items:start}.sidebar-index{background:white;border:1px solid var(--line);padding:20px;border-radius:10px;position:sticky;top:24px}.sidebar-index a{display:block;padding:7px 0;font-size:14px}.full-span{grid-column:1/-1}.compare-table{overflow-x:auto;max-width:100%;margin:25px 0;border:1px solid var(--line);border-radius:9px;background:white}.compare-table table{width:100%;min-width:610px;border-collapse:collapse;text-align:left}.compare-table caption{padding:12px 15px;text-align:left;font-weight:bold;color:var(--heading)}.compare-table th,.compare-table td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}.compare-table th{background:#e4eff0;color:var(--heading)}.compare-table tr:last-child td{border-bottom:0}.timeline{list-style:none;padding:0;counter-reset:t}.timeline li{position:relative;counter-increment:t;padding:0 0 24px 43px;border-left:2px solid #bedbdc;margin-left:16px}.timeline li:before{content:counter(t);position:absolute;left:-17px;top:0;border-radius:50%;background:var(--accent);width:31px;height:31px;text-align:center;line-height:31px;color:white;font-weight:bold}.timeline li:last-child{border:0}.timeline strong{display:block;color:var(--heading)}.triple{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.triple article{border:1px solid var(--line);background:white;border-radius:9px;padding:19px}.triple h3{margin:0 0 9px}.analysis-band{padding:28px;border-top:1px solid var(--line)}.analysis-band:nth-of-type(even){background:var(--panel)}.analysis-band p:last-child{margin-bottom:0}.exhibit{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.12fr);align-items:center;gap:26px;margin-bottom:30px}.exhibit:nth-child(even){grid-template-columns:minmax(0,1.12fr) minmax(0,1fr)}.exhibit:nth-child(even) .image-holder{order:-1}.callout{padding:15px 18px;border-left:4px solid var(--accent);background:var(--panel);font-size:15px}.faq-list details{border-bottom:1px solid var(--line);background:#fff;padding:15px 17px}.faq-list details:first-child{border-radius:9px 9px 0 0}.faq-list details:last-child{border-radius:0 0 9px 9px}.faq-list summary{cursor:pointer;font-weight:700;color:var(--heading)}.faq-list p{margin:10px 0 0;font-size:15px}.related-links{border-top:1px solid var(--line);margin-top:60px;padding-top:27px}.related-links ul{display:flex;gap:13px;flex-wrap:wrap;list-style:none;padding:0}.related-links li{margin:0}.related-links a{display:block;padding:8px 14px;background:white;border:1px solid var(--line);border-radius:8px;text-decoration:none}.site-footer{background:var(--footer);color:#c6d8dc}.footer-inner{max-width:1220px;margin:auto;padding:42px 28px 28px}.footer-intro{max-width:830px}.footer-intro strong{color:#fff;font-size:20px}.footer-intro small{font-size:10px;letter-spacing:.1em}.footer-intro p{margin-top:10px;font-size:14px}.site-footer nav{display:flex;flex-wrap:wrap;gap:9px 20px;margin:26px 0}.site-footer nav a{color:#d5e9eb;font-size:14px}.footer-note{font-size:12px;color:#a5bec5;margin:0}.guide-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:33px}.anchor-list{columns:2;padding-left:20px}.compact-guide{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.compact-guide>div{background:#fff;border:1px solid var(--line);padding:18px;border-radius:9px}
@media(max-width:1160px){.header-inner{gap:12px;padding-inline:22px}.desktop-nav{gap:8px}.desktop-nav a{font-size:12px}.register-link{padding:7px 9px}}@media(max-width:980px){.header-inner{min-height:64px;justify-content:space-between;gap:10px}.mobile-menu-wrap{display:block;order:0}.brand{order:1;margin:auto}.brand img{max-height:30px;max-width:120px}.desktop-nav{display:none}.register-link{order:2}.menu-button,.menu-close{border:1px solid #78aeb6;background:transparent;color:white;border-radius:8px;min-width:42px;min-height:42px;cursor:pointer;font-size:23px}.menu-close{margin:12px;font-size:14px;padding:7px 12px}.mobile-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;padding:20px 22px;background:#1a4050}.mobile-nav[hidden],.mobile-nav-fallback[hidden]{display:none!important}.mobile-nav>div{display:grid;align-content:start;gap:7px}.mobile-nav strong{font-size:13px;color:#87d5db}.mobile-nav a{color:#fff;text-decoration:none;padding:5px}.mobile-nav a.is-current{text-decoration:underline}.mobile-nav .menu-close{grid-column:1/-1;justify-self:end}.mobile-nav-fallback{display:block;margin:0 auto;max-width:1220px;padding:0 22px 8px;color:#fff}.mobile-nav-fallback summary{font-size:12px;cursor:pointer}.mobile-nav-fallback nav{display:flex;flex-wrap:wrap;gap:10px;padding:12px}.mobile-nav-fallback a{color:white}.main-wrap{padding:28px 22px 70px}.hero{gap:20px}}@media(max-width:760px){.split-2,.split-even,.split-wide,.guide-grid,.article-layout,.exhibit,.exhibit:nth-child(even){grid-template-columns:minmax(0,1fr)}.article-layout{gap:14px}.sidebar-index{position:static}.exhibit:nth-child(even) .image-holder{order:0}.route-groups,.triple{grid-template-columns:1fr 1fr}.reading-path{grid-template-columns:1fr 1fr}.full-span{grid-column:auto}.article{max-width:none}.mobile-nav{grid-template-columns:1fr 1fr}.hero{grid-template-columns:1fr}.hero .image-holder{max-width:650px}.anchor-list{columns:1}}@media(max-width:640px){body{font-size:15.5px}h1{font-size:28px}h2{font-size:22px}h3{font-size:18px}section+section{margin-top:36px}.main-wrap{padding:22px 16px 58px}.header-inner{padding-inline:16px}.brand small{font-size:8px;max-width:55px}.register-link{font-size:12px;padding:6px 8px}.paper,.soft-panel,.dark-panel{padding:18px}.route-groups,.triple,.compact-guide{grid-template-columns:1fr}.route-group{padding:17px}.reading-path{gap:8px}.reading-path a{padding:13px}.mobile-nav{grid-template-columns:1fr;padding:16px}.lead{font-size:16px}.image-holder--hero{--image-limit:195px}.image-holder--feature{--image-limit:180px}.image-holder--inline{--image-limit:140px}.image-holder--rules{--image-limit:165px}.image-holder--banner{--image-limit:125px}.image-holder--portrait{--image-limit:275px;max-width:240px}.footer-inner{padding:32px 16px}.section-heading{display:block}.section-heading small{display:block;margin-top:5px}.hero-links a{padding:7px 12px;font-size:14px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}