:root{font-family:Arial,sans-serif;color:#103d59;background:#fff;--pale:#edf7fd;--muted:#486577;--blue:#087bbd}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0}a{color:var(--blue);text-underline-offset:4px}::selection{background:#b7e3fa;color:#103d59}.portal-header{position:sticky;top:0;z-index:10;background:var(--pale);min-height:80px;display:flex;align-items:center;justify-content:space-between;padding:14px max(24px,calc((100vw - 1200px)/2));gap:24px}.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:#103d59;text-decoration:none}.brand img{mix-blend-mode:multiply}main{max-width:1200px;margin:auto;padding:0 28px}.intro{display:grid;grid-template-columns:1.6fr 1fr;gap:80px;padding:70px 0 64px;align-items:center}h1{font-size:64px;letter-spacing:-.035em;line-height:1.05;margin:0 0 20px;font-weight:600}p{line-height:1.65;color:var(--muted);max-width:65ch}.lead{font-size:24px;color:#103d59;margin:0 0 8px}.intro p:not(.lead){font-size:17px;margin-top:0}.primary{display:inline-flex;gap:28px;align-items:center;min-height:48px;padding:14px 20px;border-radius:12px;background:#087bbd;color:#fff;text-decoration:none;margin-top:16px}.primary:hover{background:#05639a}.announcement{border-radius:16px;background:var(--pale);padding:30px}.announcement h2{font-size:20px;margin:0 0 24px}.announcement p{margin:0 0 8px}.announcement span{font-size:13px;color:var(--muted)}.guide-layout{display:grid;grid-template-columns:225px minmax(0,1fr);gap:70px;padding-bottom:64px}.contents{position:sticky;top:112px;align-self:start;display:flex;flex-direction:column;gap:5px}.contents h2{font-size:15px;margin:0 0 14px}.contents a{color:var(--muted);font-size:14px;text-decoration:none;padding:10px 0}.contents a:hover{color:#05639a;text-decoration:underline}.guide-heading h2{font-size:30px;letter-spacing:-.025em;margin:0}.guide-heading p{margin:12px 0 38px;font-size:15px}.activity-group{margin:0 0 44px}.activity-group h2{font-size:23px;letter-spacing:-.015em;margin:0 0 8px}.group-description{font-size:14px;margin:0 0 18px}.activity{border-bottom:1px solid #d7e5ed}.activity summary{list-style:none;cursor:pointer;padding:20px 6px;display:flex;align-items:center;gap:16px;min-height:64px;border-radius:10px}.activity summary::-webkit-details-marker{display:none}.activity summary:hover{background:#f4faff}.activity summary:after{content:'+';margin-left:auto;font-size:24px;font-weight:400;color:var(--blue)}.activity[open] summary:after{content:'−'}.activity-title{font-size:16px;font-weight:600;line-height:1.4}.activity-note{display:block;font-size:13px;color:var(--muted);font-weight:400;margin-top:5px}.activity-content{margin:0 6px 20px;background:#f5faff;border-radius:12px;padding:22px}.activity-content p{margin:0;font-size:14px}.activity-content a{display:inline-block;margin-top:16px}.unlock{display:flex;align-items:start;gap:18px;background:var(--pale);padding:24px;border-radius:16px;margin:8px 0 44px}.unlock svg{width:24px;height:24px;flex-shrink:0}.unlock h3{margin:0;font-size:17px}.unlock p{font-size:14px;margin:8px 0 0}.support{padding:0 0 28px;margin-top:36px}.support h2{font-size:25px;margin:0 0 12px}.placeholder{padding:24px;background:#f5faff;border-radius:12px;font-size:15px}.support a{font-size:15px}footer{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #d7e5ed;padding:28px max(28px,calc((100vw - 1144px)/2));font-size:13px;color:var(--muted)}footer a{text-decoration:none}body{scrollbar-color:#b8d2e2 white}@media(max-width:1000px){.intro{gap:32px}.guide-layout{gap:30px;grid-template-columns:190px minmax(0,1fr)}}@media(max-width:650px){html{scroll-padding-top:140px}.portal-header{position:sticky;flex-direction:column;gap:12px;padding:12px 16px 8px}.brand{align-self:flex-start}.site-nav{width:100%;justify-content:space-between}.site-nav a{flex:1;text-align:center}main{padding:0 20px}.intro{display:block;padding:36px 0}h1{font-size:44px}.lead{font-size:21px}.intro p:not(.lead){font-size:15px}.announcement{padding:24px;margin-top:32px}.announcement h2{margin-bottom:16px}.guide-layout{display:block}.contents{position:static;display:flex;flex-direction:row;overflow-x:auto;gap:12px;padding:0 0 20px;margin-bottom:12px}.contents h2{display:none}.contents a{white-space:nowrap;padding:12px 14px;background:var(--pale);border-radius:12px}.guide-heading h2{font-size:27px}.activity summary{padding:18px 2px}.activity-group h2{font-size:22px}footer{flex-direction:column;padding:24px 20px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}@media(prefers-reduced-motion:no-preference){.activity[open] .activity-content{animation:open-section .22s ease-out}@keyframes open-section{from{opacity:.6;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}}
.intro h1{font-size:clamp(38px,4.5vw,64px);max-width:10ch}.regulation-page{width:100%;min-height:calc(100dvh - 160px);padding-top:64px;padding-bottom:64px}.regulation-page h1{font-size:clamp(38px,4.5vw,64px)}