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:root{--navy:#0C1F34;--nav:#102B48;--panel:#193957;--brand:#1556A2;--light:#EAF5FC;--paper:#F6F9FC;--white:#fff;--ink:#183047;--body:#34495B;--muted:#536A7B;--line:#D9E5EE;--teal:#3B9796;--coral:#D88774}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--body);background:var(--paper);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}a:hover{color:var(--brand)}button,input{font:inherit}button{cursor:pointer}img{max-width:100%;height:auto;object-fit:contain}.wrap{width:min(1260px,calc(100% - 64px));margin-inline:auto}.micro{height:30px;background:var(--navy);color:#e8f1f8;font-size:12px}.micro-inner{display:flex;align-items:center;justify-content:space-between;height:100%}.micro a{margin-left:17px;color:#dce9f4}.site-header{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line)}.header-inner{min-height:70px;display:flex;align-items:center;gap:24px}.brand{display:flex;align-items:center;gap:10px;color:var(--navy);white-space:nowrap}.brand img{max-width:140px;max-height:38px}.brand strong{display:block;font-size:24px;line-height:1.1;letter-spacing:.02em}.brand small{display:block;color:var(--brand);font-size:10px;letter-spacing:.22em;line-height:1.2}.main-nav{display:flex;align-items:center;gap:24px;margin:auto}.main-nav a{font-size:15px;font-weight:600;padding:23px 2px 20px;border-bottom:3px solid transparent}.main-nav a[aria-current]{border-bottom-color:var(--brand);color:var(--brand)}.header-actions{display:flex;gap:8px;align-items:center}.utility,.menu-toggle{border:1px solid var(--line);background:white;padding:9px 14px;border-radius:9px;font-size:14px;min-height:44px;white-space:nowrap;color:var(--navy)}.menu-toggle{background:var(--nav);color:#fff;border-color:var(--nav)}.topic-rail{background:var(--light);border-bottom:1px solid var(--line)}.rail-inner{display:flex;gap:30px;align-items:center;overflow-x:auto;white-space:nowrap;min-height:43px;scrollbar-width:thin}.rail-inner a{font-size:14px;font-weight:500;color:#254862}.menu-backdrop{position:fixed;inset:0;background:#09182799;opacity:0;visibility:hidden;pointer-events:none;z-index:89;transition:opacity .15s}.menu-panel{position:fixed;z-index:90;top:100px;right:3%;width:min(1020px,94vw);max-height:calc(100dvh - 120px);overflow-y:auto;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 26px;box-shadow:0 24px 65px #09182735;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-8px);transition:.15s}.menu-open .menu-panel,.menu-open .menu-backdrop{opacity:1;visibility:visible;pointer-events:auto;transform:none}.menu-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:10px}.menu-top button{border:0;background:var(--light);font-size:26px;width:44px;height:44px;border-radius:9px}.menu-groups{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px}.menu-groups h3{font-size:15px;color:var(--navy)}.menu-groups a{display:block;font-size:14px;padding:5px 0}.section{padding:52px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:23px}.section-title h2{font-size:26px;line-height:1.3;color:var(--ink);margin:0 0 8px}.section-title p{margin:0;max-width:740px}.section-title a{color:var(--brand);font-weight:600;white-space:nowrap}.hero{background:linear-gradient(125deg,#0c1f34,#183f65);color:#e4eef6}.hero-inner{display:grid;grid-template-columns:43% 57%;align-items:center;min-height:350px;gap:0}.hero-copy{padding:37px 32px 37px 0}.hero h1{font-size:39px;color:white;line-height:1.22;margin:9px 0 18px}.hero p{max-width:520px;margin:0 0 23px}.eyebrow,.kicker{font-size:12px;letter-spacing:.08em;font-weight:700;color:#2363a5}.hero .eyebrow{color:#9fdae9}.hero .feature-image{max-height:380px;display:block;width:100%;object-fit:contain}.button{display:inline-flex;justify-content:center;align-items:center;min-height:44px;background:var(--brand);padding:10px 20px;border-radius:9px;color:#fff;font-weight:600;line-height:1.4}.button:hover{color:#fff;background:#104582}.button.secondary{background:#e5f4f7;color:#10354c}.button-row{display:flex;flex-wrap:wrap;gap:12px}.eyebrow{display:block}.section.alt{background:#eaf5fc}.section.warm{background:#fbf8f4}.section.deep{background:var(--navy);color:#e1edf6}.deep h2,.deep .section-title h2{color:white}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.story,.feature-card,.info-panel,.text-card{display:block;border:1px solid var(--line);border-radius:14px;background:white;padding:24px;min-width:0}.story{transition:transform .15s,box-shadow .15s}.story:hover{transform:translateY(-3px);box-shadow:0 10px 30px #0c1f3412}.story h3,.feature-card h3{font-size:19px;line-height:1.45;margin:10px 0;color:var(--ink)}.story p{font-size:15px;line-height:1.75;margin:0 0 12px}.arrow{font-size:13px;font-weight:700;color:var(--brand)}.deep .story{background:#193957;border-color:#35536d;color:#dceafa}.deep .story h3{color:white}.deep .story .arrow,.deep .story .kicker{color:#9bdbe7}.lead-layout{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:20px}.feature-card{padding:28px}.feature-card .feature-image{display:block;width:100%;max-height:260px;margin-bottom:18px}.feature-card h3{font-size:25px}.compact-list{display:grid;gap:10px}.compact-link{display:flex;align-items:center;gap:14px;background:white;border:1px solid var(--line);border-radius:11px;padding:15px 18px;min-width:0}.compact-link .n{font-size:21px;color:#2673ae;font-weight:700}.compact-link strong{color:var(--ink);font-size:16px}.channel-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px}.channel-box{background:white;border-radius:12px;padding:19px;border:1px solid var(--line)}.channel-box strong{color:var(--ink);display:block}.channel-box p{font-size:13px;line-height:1.65;margin:7px 0 0}.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.split .feature-card{height:100%}.split .feature-image{max-height:210px}.section-intro{padding:40px 0 30px;background:linear-gradient(120deg,#ebf6fc,#fbfdfd)}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:12px}.breadcrumb a{color:var(--brand)}h1,h2,h3{line-height:1.35;color:var(--ink)}.section-intro h1{font-size:35px;margin:0 0 14px}.section-intro p{max-width:810px;margin:0;font-size:17px;line-height:1.8}.section-intro .feature-image{max-height:230px;margin:18px 0}.article-layout{display:grid;grid-template-columns:minmax(0,780px) minmax(0,300px);gap:55px}.article-body{font-size:17px;line-height:1.85;min-width:0}.article-body h2{font-size:25px;margin:34px 0 13px}.article-body p{margin:0 0 20px}.article-lead{color:#436178;font-size:18px}.side-box{background:white;border:1px solid var(--line);border-radius:12px;padding:23px;align-self:start}.side-box h3{margin:0 0 14px}.side-box a{display:block;padding:10px 0;border-top:1px solid var(--line);color:var(--brand);font-size:14px}.search-form{display:flex;gap:10px;max-width:700px}.search-form input{min-width:0;flex:1;border:1px solid #b8cbd9;border-radius:9px;background:white;padding:10px 14px;min-height:48px}.search-form button{border:0}.pagination{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px}.pagination a,.pagination strong{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;border:1px solid var(--line);background:white;border-radius:8px;padding:7px 13px}.pagination strong{background:var(--brand);color:white}.notice{border-left:4px solid var(--brand);background:#eaf5fc;padding:18px 21px;border-radius:5px;margin:20px 0}.feature-image{max-width:100%;height:auto;object-fit:contain}.timesteps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;counter-reset:step}.timesteps div{background:white;border:1px solid var(--line);border-radius:12px;padding:20px}.timesteps b{display:block;color:var(--brand);margin-bottom:8px}details{background:white;border:1px solid var(--line);border-radius:11px;margin-bottom:12px;padding:17px 20px}summary{cursor:pointer;font-weight:650;color:var(--ink)}details p{margin:12px 0 0}.site-footer{background:var(--navy);color:#c9dce9;padding:55px 0 24px}.footer-grid{display:grid;grid-template-columns:2.2fr repeat(5,minmax(0,1fr));gap:23px}.footer-grid h3{color:#f2f8fb;font-size:14px;margin-top:2px}.footer-grid a{display:block;font-size:13px;color:#bcd2e0;margin:8px 0}.footer-lead strong{color:white;font-size:23px}.footer-lead span{display:block;font-size:12px;letter-spacing:.18em;color:#94c9de}.footer-lead p{font-size:14px;max-width:300px}.footer-bottom{border-top:1px solid #33506a;padding-top:18px;display:flex;justify-content:space-between;gap:15px;font-size:12px}.footer-bottom a{color:inherit}.mobile-dock{display:none}:focus-visible{outline:3px solid #49a2d5;outline-offset:3px}
@media(max-width:1100px){.main-nav{gap:12px}.menu-groups{grid-template-columns:repeat(3,1fr)}.channel-grid{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:800px){.wrap{width:calc(100% - 40px)}.main-nav{display:none}.header-inner{justify-content:space-between}.header-actions{margin-left:auto}.site-header{top:0}.hero-inner{grid-template-columns:1fr;min-height:0}.hero-copy{padding:34px 0 22px}.hero h1{font-size:30px}.hero .feature-image{max-height:255px}.lead-layout,.article-layout{grid-template-columns:1fr}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.menu-panel{width:min(460px,88vw);height:100dvh;max-height:100dvh;right:0;top:0;border-radius:0;transform:translateX(18px)}.menu-groups{grid-template-columns:repeat(2,1fr)}.section{padding:38px 0}.section-intro h1{font-size:29px}.timesteps{grid-template-columns:repeat(2,1fr)}.mobile-dock{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:50;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);justify-content:space-around}.mobile-dock a{flex:1;min-height:52px;display:grid;place-items:center;color:var(--navy);font-weight:700;font-size:13px}.site-footer{padding-bottom:90px}.footer-grid{grid-template-columns:repeat(2,1fr)}body.menu-open{overflow:hidden}}
@media(max-width:480px){.wrap{width:calc(100% - 32px)}.micro-inner div a:not(:first-child){display:none}.header-inner{min-height:62px;gap:8px}.brand strong{font-size:20px}.brand small{font-size:9px}.brand img{max-width:85px}.utility,.menu-toggle{padding:8px 10px;font-size:12px}.hero h1{font-size:29px}.cards,.split{grid-template-columns:1fr}.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.story,.feature-card{padding:19px}.menu-panel{padding:16px}.menu-groups{gap:12px}.section-title{align-items:start}.section-title h2{font-size:22px}.section-title a{font-size:12px}.section-intro h1{font-size:26px}.footer-grid{gap:19px}.footer-lead{grid-column:1/-1}.footer-bottom{flex-direction:column}.timesteps{grid-template-columns:1fr}.article-body{font-size:16px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}