:root{--navy:#073765;--blue:#05a9df;--teal:#14bdb4;--pink:#ff567c;--yellow:#fff08a;--sky:#eefaff;--text:#12385d;--muted:#60788c;--line:#d5e8f0;--white:#fff;--shadow:0 16px 42px rgba(7,55,101,.1)}
*{box-sizing:border-box}body{margin:0;color:var(--text);font-family:"Noto Sans JP",sans-serif;line-height:1.7;background:#f5fbfe}a{color:inherit}.join-header{height:74px;padding:0 max(20px,calc((100% - 1180px)/2));display:flex;align-items:center;justify-content:space-between;background:#fff;box-shadow:0 2px 15px rgba(2,56,93,.08)}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:900;font-size:1.2rem;color:var(--navy)}.brand-logo{display:block;width:32px;height:32px;flex:0 0 32px}.back-link{font-size:.85rem;font-weight:700;color:#066b96;text-underline-offset:4px}
.join-hero{text-align:center;padding:54px 20px 42px;background:linear-gradient(145deg,#e8f9ff,#fff)}.kicker{color:var(--teal);font-weight:900;letter-spacing:.18em;font-size:.8rem;margin:0 0 6px}.join-hero h1{font-family:"M PLUS Rounded 1c",sans-serif;font-size:clamp(2.15rem,5vw,3.4rem);line-height:1.25;color:var(--navy);margin:0 0 14px}.join-hero h1 span{color:var(--blue)}.join-hero>p:not(.kicker){margin:0;color:var(--muted)}.progress{width:min(540px,100%);display:grid;grid-template-columns:repeat(3,1fr);list-style:none;margin:32px auto 0;padding:0;position:relative}.progress:before{content:"";position:absolute;left:16.66%;right:16.66%;top:19px;height:2px;background:#c9dfe9}.progress li{position:relative;display:grid;justify-items:center;gap:5px;font-size:.78rem;font-weight:700;color:#8aa0b2}.progress b{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#dceaf0;color:#6d8799;z-index:1}.progress .current{color:var(--navy)}.progress .current b{background:var(--blue);color:#fff;box-shadow:0 5px 14px rgba(5,169,223,.28)}
.join-form{width:min(920px,calc(100% - 32px));margin:42px auto 70px}.form-section{background:#fff;border:1px solid #dcebf1;border-radius:22px;padding:34px 38px;margin-bottom:24px;box-shadow:var(--shadow)}.section-heading{display:flex;gap:18px;align-items:flex-start;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:26px}.section-heading>span{flex:0 0 48px;width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue),#47c8df);color:#fff;font-weight:900}.section-heading h2{font-family:"M PLUS Rounded 1c",sans-serif;color:var(--navy);font-size:1.45rem;line-height:1.35;margin:0}.section-heading p{font-size:.85rem;color:var(--muted);margin:2px 0 0}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px 24px}.field{display:grid;gap:8px;margin:0;padding:0;border:0}.field.full{grid-column:1/-1}.field>span,.field legend{font-size:.88rem;font-weight:700;color:var(--navy)}em{font-style:normal;font-size:.68rem;color:#fff;background:var(--pink);padding:2px 6px;border-radius:4px;margin-left:5px;vertical-align:2px}input,select,textarea{width:100%;font:inherit;color:var(--text);background:#fbfdfe;border:1px solid #bfd8e3;border-radius:10px;padding:12px 14px;outline:0;transition:border-color .2s,box-shadow .2s}textarea{resize:vertical;min-height:110px}input:focus,select:focus,textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(5,169,223,.14);background:#fff}::placeholder{color:#9aabb8}.radio-row{display:flex;flex-wrap:wrap;gap:10px}.radio-row label{flex:1;min-width:220px;display:flex;align-items:center;gap:9px;border:1px solid #bfd8e3;border-radius:10px;padding:12px 14px;font-weight:600;cursor:pointer}.radio-row input,.agreement input{width:auto;accent-color:var(--blue)}.additional-list{display:grid;gap:16px;margin-top:26px}.participant-card{border:1px solid #cfe3eb;border-radius:14px;padding:20px;background:#f8fcfe}.participant-card h3{font-size:1rem;margin:0 0 16px;color:var(--navy)}.participant-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}.participant-fields label{display:grid;gap:6px;font-size:.78rem;font-weight:700}.participant-fields label:nth-child(2){grid-column:span 1}.participant-fields input{padding:10px 12px}
.agreement{background:#eef9fd;border-radius:16px;padding:22px 26px;margin:28px 0 24px}.agreement label{display:flex;align-items:flex-start;gap:12px;font-weight:700}.agreement input{margin-top:7px;transform:scale(1.25)}.agreement p{font-size:.8rem;color:var(--muted);margin:10px 0 0 30px}.form-message{width:min(620px,100%);margin:0 auto 18px;padding:14px 18px;border:1px solid #efb4bd;border-radius:11px;background:#fff1f3;color:#8a2636;font-size:.86rem;font-weight:700}.submit-button{width:min(520px,100%);min-height:72px;margin:0 auto;display:flex;align-items:center;justify-content:center;gap:10px;border:0;border-radius:999px;background:linear-gradient(135deg,#05a9df,#0785cc);color:#fff;font:900 1.15rem "Noto Sans JP",sans-serif;box-shadow:0 14px 28px rgba(5,144,207,.28);cursor:pointer;transition:transform .2s,box-shadow .2s}.submit-button span{font-size:.75rem;font-weight:600}.submit-button:hover{transform:translateY(-2px);box-shadow:0 18px 32px rgba(5,144,207,.35)}.submit-button:focus-visible{outline:3px solid #ffd33d;outline-offset:3px}.submit-button:disabled{cursor:wait;opacity:.72;transform:none;box-shadow:none}.submit-note{text-align:center;font-size:.75rem;color:var(--muted);margin:10px 0}.honeypot{position:absolute!important;left:-9999px!important}footer{text-align:center;background:var(--navy);color:#fff;padding:24px}footer p{margin:0;font-size:.78rem}
@media(max-width:680px){.join-header{height:64px;padding-inline:14px}.brand{font-size:.95rem}.brand-logo{width:27px;height:27px;flex-basis:27px}.back-link{font-size:.72rem}.join-hero{padding:38px 16px 34px}.join-hero>p:not(.kicker){font-size:.86rem}.join-form{margin-top:26px}.form-section{padding:25px 19px;border-radius:17px}.section-heading{gap:13px}.section-heading>span{width:42px;height:42px;flex-basis:42px}.section-heading h2{font-size:1.25rem}.field-grid{grid-template-columns:1fr;gap:18px}.field.full{grid-column:auto}.radio-row{display:grid}.radio-row label{min-width:0}.participant-fields{grid-template-columns:1fr}.agreement{padding:19px}.submit-button{min-height:66px;font-size:1rem;flex-wrap:wrap;gap:4px 8px;padding:10px 20px}.submit-button span{width:100%}}
.price-summary{color:#0785b4;font-weight:900}.payment-note{color:var(--muted);font-size:.76rem}.payment-methods label{background:#fbfdfe}

.same-as-bank-name{display:flex;align-items:center;gap:9px;width:max-content;max-width:100%;font-size:.82rem;font-weight:700;color:var(--navy);cursor:pointer}.same-as-bank-name input{width:auto;accent-color:var(--blue)}#receipt-name[readonly]{background:#eef6f9;color:#526d7d}


/* Common legal and navigation footer */
footer .footer-content{width:min(1240px,calc(100% - 32px));margin:0 auto;display:grid;gap:14px;justify-items:center;text-align:center}
footer .footer-brand{color:#fff;text-decoration:none;font-weight:900}
footer .footer-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 20px}
footer .footer-links a{color:rgba(255,255,255,.88);font-size:.8rem;text-decoration:none}
footer .footer-links a:hover,footer .footer-links a:focus-visible{color:#fff;text-decoration:underline}
footer .footer-content p{margin:0;font-size:.78rem}
@media(max-width:600px){footer .footer-links{display:grid;grid-template-columns:1fr 1fr;gap:9px 16px}}


#price-summary{display:block;font-size:16px;line-height:1.7}#price-condition{display:block;font-size:13px;line-height:1.8;color:var(--navy)}

.back-link:hover{color:#073765;text-decoration-thickness:2px}.back-link:focus-visible{color:#073765;outline:3px solid #073765;outline-offset:5px;border-radius:2px;text-decoration-thickness:2px}