.registration-theme{background:radial-gradient(ellipse 600px 1100px at left 100px,#eaf4ff 0,#f8fcff 50%,#fff 100%);color:#111827}
.registration-theme .site-shell{width:100%;max-width:none;padding:0;margin:0;background:transparent}
.registration-theme .site-shell>main{display:block;padding:0;gap:0;margin:0;background:transparent}
.registration-theme .site-shell>main>.flash-banner,.registration-theme .site-shell>main>.site-notice{max-width:1120px;margin:24px auto}
.registration-layout{display:grid;grid-template-columns:minmax(0,360px) minmax(0,610px);gap:clamp(48px,8vw,112px);max-width:1200px;padding:72px 40px 76px;margin:0 auto;background:transparent;position:relative;font-size:15px;line-height:1.8}
.registration-intro,.registration-form-area{position:relative;min-width:0;z-index:1}
.registration-intro{padding-top:96px}
.registration-intro h2{font-family:"Noto Serif JP",serif;font-size:clamp(32px,3.1vw,44px);font-weight:500;line-height:1.65;letter-spacing:.015em;margin:0 0 28px;color:#111827}
.registration-intro>p{margin:0;color:#64748b;font-size:17px;line-height:1.9}
.registration-intro .registration-free{margin-top:30px;font-size:14px;font-weight:600}
.registration-steps{list-style:none;padding:0;margin:46px 0 0;display:grid;gap:30px}
.registration-steps li{display:flex;align-items:flex-start;gap:20px;position:relative;margin:0;padding:0;min-width:0}
.registration-steps li:not(:last-child):after{content:"";position:absolute;left:19px;top:44px;height:calc(100% - 13px);width:1px;background:#b7cafa}
.registration-steps li>span{display:grid;place-items:center;width:40px;height:40px;flex:0 0 40px;border-radius:50%;background:#edf2ff;color:#3159db;font-size:14px}
.registration-steps strong{display:block;font-size:15px;font-weight:650;line-height:1.7;padding:4px 0}
.registration-steps p{font-size:13px;line-height:1.9;color:#64748b;margin:4px 0 0}
.registration-flow{border:0;padding:0;margin:0;background:transparent}
.registration-flow>summary{display:none}
.registration-door{width:100%;height:auto;max-height:190px;margin-top:170px;color:#7c9afa}
.registration-form-area h1{font:500 clamp(27px,2.5vw,36px)/1.5 "Noto Serif JP",serif;margin:0;color:#111827;letter-spacing:.01em}
.registration-lead{margin:8px 0 40px;color:#64748b;font-size:14px}
.registration-form{display:grid;gap:30px;background:transparent;border:0;box-shadow:none;padding:0;margin:0}
.registration-form fieldset{min-width:0;padding:0;border:0;margin:0}
.registration-purpose legend{padding:0;margin:0 0 13px;font-size:15px;font-weight:700}
.registration-choice{display:flex;align-items:center;gap:16px;border:1px solid #dfe7f4;border-radius:2px;padding:12px 20px;min-height:50px;margin:0 0 10px;cursor:pointer;background:#fff;transition:border-color .16s,background .16s}
.registration-choice:has(input:checked){border-color:#3159db;background:#fbfcff}
.registration-choice:hover{border-color:#3159db}
.registration-choice input{width:18px;height:18px;flex:0 0 18px;margin:0;accent-color:#3159db}
.registration-choice span{font-weight:600;font-size:15px;line-height:1.6}
.registration-hint,.registration-field>small{font-size:12px;line-height:1.9;color:#64748b;margin:0}
.registration-purpose .registration-hint{margin:7px 0 0}
.registration-field{display:flex;flex-direction:column;align-items:stretch;gap:8px;min-width:0}
.registration-field>label{font-size:15px;line-height:1.6;font-weight:700;margin:0;color:#111827}
.registration-form input:not([type=radio]):not([type=checkbox]),.registration-form textarea{box-sizing:border-box;width:100%;min-width:0;border:1px solid #dfe7f4;border-radius:2px;background:#fff;box-shadow:none;color:#111827;font:400 16px/1.6 "Noto Sans JP",sans-serif;padding:12px 16px;min-height:50px;outline-offset:3px}
.registration-form input::placeholder,.registration-form textarea::placeholder{color:#94a3b8;opacity:1}
.registration-form input:focus-visible,.registration-form textarea:focus-visible,.registration-form button:focus-visible,.registration-form summary:focus-visible,.registration-form a:focus-visible,.registration-choice:has(input:focus-visible){outline:2px solid #3159db;outline-offset:3px}
.registration-form input[aria-invalid=true]{border-color:#b42318}
.registration-error{color:#b42318;font-size:13px;line-height:1.8;margin:0}
.registration-password-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.registration-password-input{position:relative;min-width:0}
.registration-password-input input{padding-right:44px!important}
.registration-eye{position:absolute;right:2px;top:2px;width:44px;height:46px;display:grid;place-items:center;background:transparent;color:#64748b;border:0;border-radius:2px;cursor:pointer;padding:0}
.registration-eye:hover{color:#3159db;background:#f6f9ff}
.registration-password>.registration-hint{margin-top:10px}
.registration-password-tools{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:16px}
.registration-strength{flex:1;min-width:90px;display:grid;gap:5px}
.registration-strength-track{height:4px;display:block;background:#e7edf5;border-radius:2px;overflow:hidden}
.registration-strength-track>span{display:block;width:0;height:100%;background:#3159db;transition:width .2s}
.registration-strength small{font-size:11px;line-height:1.5;color:#64748b}
.registration-text-button{background:transparent;border:0;color:#64748b;padding:5px 0;cursor:pointer;font:400 13px/1.7 "Noto Sans JP",sans-serif;text-align:right}
.registration-text-button:hover{color:#3159db;text-decoration:underline;text-underline-offset:3px}
.registration-optional{border:1px solid #dfe7f4;border-radius:2px;margin:0;background:#fff}
.registration-optional summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:14px;font-weight:500;cursor:pointer;padding:14px 20px;color:#111827}
.registration-optional summary::-webkit-details-marker{display:none}
.registration-optional summary>span{color:#3159db;font-size:20px;line-height:1;font-weight:300}
.registration-optional[open] summary>span{transform:rotate(45deg)}
.registration-optional-fields{padding:8px 20px 20px;display:grid;gap:20px}
.registration-consent{border-top:1px solid #dfe7f4;padding-top:28px;display:grid;gap:16px;margin:0}
.registration-consent h2{font-size:15px;font-family:"Noto Sans JP",sans-serif;font-weight:700;margin:0;line-height:1.7;color:#111827}
.registration-consent>p{color:#64748b;font-size:12px;line-height:1.9;margin:0}
.registration-checkbox{display:flex;align-items:flex-start;gap:12px;margin:0;font-size:13px;line-height:1.9;font-weight:400;cursor:pointer;color:#64748b;min-width:0}
.registration-checkbox input{width:19px;height:19px;flex:0 0 19px;margin:3px 0 0;accent-color:#3159db}
.registration-checkbox span{min-width:0}
.registration-form a{color:#3159db;text-decoration:underline;text-underline-offset:3px}
.registration-submit>p{font-size:12px;line-height:1.9;color:#64748b;margin:0 0 20px}
.registration-submit>.button{width:100%;min-height:56px;display:flex;align-items:center;justify-content:center;gap:14px;border-radius:2px;border:1px solid #3159db;background:#3159db;color:#fff;font:600 15px/1.7 "Noto Sans JP",sans-serif;padding:14px 18px;cursor:pointer;box-shadow:none;transition:background .16s,box-shadow .16s}
.registration-submit>.button:hover{background:#244cc9;box-shadow:0 5px 16px #3159db14}
.registration-submit .registration-login{margin:20px 0 0;text-align:center;font-size:13px}
.registration-rejoin{padding-top:20px;margin:-8px 0 0;border-top:1px solid #e8eef8;text-align:center;color:#64748b;font-size:12px;line-height:1.9}
.registration-footer{max-width:1200px;padding:30px 24px 38px;margin:0 auto;border-top:1px solid #dfe7f4;display:flex;align-items:center;gap:35px;font-size:11px;color:#64748b;background:#fff}
.registration-footer>a{display:block;flex:0 0 80px;color:#3159db}
.registration-footer .brand-logo{width:80px;max-height:40px}
.registration-footer nav{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px 24px;flex:1}
.registration-footer nav a{color:#64748b;line-height:1.9;text-decoration:none}
.registration-footer nav a:hover{color:#3159db;text-decoration:underline;text-underline-offset:3px}
.registration-footer>small{font-size:11px;white-space:nowrap}
@media(max-width:1000px){.registration-layout{grid-template-columns:minmax(0,290px) minmax(0,1fr);gap:40px;padding:54px 32px}.registration-intro h2{font-size:34px}.registration-intro>p{font-size:15px}.registration-password-grid{gap:12px}.registration-password-grid label{font-size:13px}.registration-footer{margin:0 24px;gap:24px;flex-wrap:wrap}.registration-footer>small{width:100%;text-align:center}}
@media(max-width:760px){.registration-layout{grid-template-columns:minmax(0,1fr);padding:30px 24px 44px;gap:26px;max-width:620px}.registration-intro{padding:0}.registration-intro h2{font-size:28px;line-height:1.6;margin:0 0 12px}.registration-intro h2 br{display:none}.registration-intro>p{font-size:14px;line-height:1.9}.registration-intro .registration-free{font-size:12px;margin-top:14px}.registration-steps{margin:22px 0 0;gap:14px}.registration-steps li{gap:12px}.registration-steps li>span{width:28px;height:28px;flex-basis:28px;font-size:11px}.registration-steps strong{font-size:12px;padding:2px 0}.registration-steps p{display:none}.registration-steps li:not(:last-child):after{left:13px;top:30px;height:13px}.registration-door{display:none}.registration-form-area{border-top:1px solid #dfe7f4;padding-top:24px}.registration-form-area h1{font-size:26px}.registration-lead{font-size:13px;margin:8px 0 28px}.registration-form{gap:26px}.registration-purpose legend{font-size:14px}.registration-choice{padding:12px 16px;min-height:48px}.registration-choice span{font-size:14px}.registration-password-grid{grid-template-columns:minmax(0,1fr);gap:22px}.registration-password-grid label{font-size:15px}.registration-password-tools{gap:16px}.registration-text-button{font-size:12px}.registration-field>label{font-size:15px}.registration-optional summary{font-size:13px;padding:14px 16px}.registration-optional-fields{padding:6px 16px 20px}.registration-consent{padding-top:24px}.registration-submit>.button{font-size:14px;gap:10px}.registration-footer{margin:0 24px;padding:26px 0 32px;justify-content:center;gap:22px}.registration-footer>a{flex-basis:70px}.registration-footer nav{flex-basis:100%;font-size:11px;gap:10px 18px}}
@media(max-width:760px){.registration-flow{margin-top:18px}.registration-flow>summary{display:flex;gap:8px;align-items:center;justify-content:flex-start;cursor:pointer;list-style:none;font-size:12px;line-height:1.9;color:#3159db}.registration-flow>summary::-webkit-details-marker{display:none}.registration-flow[open]>summary>.icon{transform:rotate(180deg)}.registration-steps{margin-top:18px}.registration-steps p{display:block;font-size:12px}.registration-steps li:not(:last-child):after{height:calc(100% - 16px)}}
@media(prefers-reduced-motion:reduce){.registration-layout *{transition:none!important}}