:root{font-family:"Hiragino Sans","Noto Sans JP",-apple-system,BlinkMacSystemFont,sans-serif;font-size:112.5%;color:#20382f;background:#f2f5f1;line-break:strict;word-break:normal;color-scheme:light}*{box-sizing:border-box;min-width:0}[hidden]{display:none!important}body{margin:0;padding:40px 20px;line-height:1.8}button,input{font:inherit}button,a,input{touch-action:manipulation}button,a{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #397e66;outline-offset:4px}button{min-height:48px;border:0;border-radius:14px}input:not([type=checkbox]){width:100%;min-height:56px;background:#fff;border:1px solid #85958a;border-radius:12px;padding:12px 14px;font-size:1rem;color:inherit}input[type=checkbox]{width:22px;height:22px;flex-shrink:0;accent-color:#21533e}label{display:block;font-weight:600;margin:16px 0 8px}.login-card{max-width:480px;margin:0 auto;padding:36px;background:#fff;border:1px solid #d7e1d8;border-radius:28px;box-shadow:0 16px 64px #20382f09}.brand{display:flex;align-items:center;gap:15px}.brand img{background:#edf2e9;border-radius:50%;padding:9px}.brand span{font-size:.86rem;line-height:1.35;letter-spacing:.1em}.brand strong{display:block;font-size:1.24rem;letter-spacing:.18em}.eyebrow{font-size:.72rem;letter-spacing:.14em;font-weight:600;margin:36px 0 10px;color:#496654}h1{font-size:2rem;line-height:1.45;letter-spacing:.03em;font-weight:650;margin:0 0 16px}h2{font-size:1.25rem;line-height:1.5;margin:0 0 18px}.intro{color:#506458;margin:0 0 30px}.step{font-size:.78rem;color:#506458;margin:0}.hint,.help{font-size:.9rem;color:#506458;line-height:1.7}.hint{margin:8px 0 18px}.help{margin-top:25px}.primary{display:block;width:100%;background:#24543f;color:#fff;font-weight:600;padding:12px 16px;margin-top:20px}.primary:hover{background:#183c2d}.text-button{background:transparent;color:#24543f;text-decoration:underline;padding:0 8px}#selected-phone{margin:8px 0 0;font-weight:600;overflow-wrap:anywhere}.password-field{display:flex;gap:8px}.password-field input{flex:1}.password-field button{background:#eef3ed;padding:0 12px;flex-shrink:0}.check{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;font-weight:400;margin-top:20px}.check input{margin:5px 0 0}.check+.hint{margin-top:0}#status,.status{background:#fff3e8;color:#713516;padding:12px 14px;border-radius:12px;font-size:.9rem;overflow-wrap:anywhere}footer{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;border-top:1px solid #dce5dc;margin-top:30px;padding-top:18px;font-size:.65rem;letter-spacing:.07em;color:#506458}footer a{color:#355543;min-height:44px;padding:10px 0}.admin-wrap{max-width:780px;margin:auto}.admin-wrap>header{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:30px}.admin-wrap h1{margin-top:18px}.panel{background:#fff;border:1px solid #d7e1d8;border-radius:22px;padding:28px;margin:24px 0}.admin-wrap .primary{max-width:320px}.member{display:flex;align-items:center;gap:12px;justify-content:space-between;border-top:1px solid #dce5dc;padding:18px 0}.member p{margin:0}.member small{display:block;color:#506458}.member button{padding:8px 15px;background:#edf2e9;color:#24543f;flex-shrink:0}.member-list{padding:0;list-style:none}.secondary{padding:10px 18px;color:#24543f;background:#edf2e9}.admin-wrap .help{margin:0}.status:empty{display:none}.columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:520px){body{padding:20px 12px}.login-card{padding:26px 22px;border-radius:22px}h1{font-size:1.8rem}.panel{padding:22px 18px}.columns{grid-template-columns:1fr;gap:0}.admin-wrap>header{align-items:flex-start;flex-direction:column}.member{flex-wrap:wrap}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s}}@media(min-width:600px){body:has(.login-card){padding-top:60px}}

.brand{flex-wrap:wrap}.brand img{flex-shrink:0}.brand span{overflow-wrap:anywhere}.password-field{flex-wrap:wrap}.password-field input{min-width:120px}.check{min-height:44px}.admin-wrap h1{overflow-wrap:anywhere}

/* 読本への入口。ログインを中心に、登録への道を下部に添える。 */
.auth-page{background:#f6f8f5;min-height:100svh;display:grid;place-items:center;padding:40px 24px;color:#243f34}
.entry{width:100%;max-width:360px;text-align:center;padding:12px 0 24px}
.entry-brand{margin:0 0 38px;text-align:left}
.entry-brand img{display:block;width:88px;height:88px;margin-bottom:22px}
.entry-brand h1{margin:0;font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;line-height:1.02;font-size:clamp(1.85rem,13vw,2.85rem);font-weight:500;letter-spacing:-.035em;overflow-wrap:anywhere}
.entry-brand h1 span,.entry-brand h1 strong{display:block;font:inherit;letter-spacing:inherit}
.entry-tagline{font-size:1rem;font-weight:400;line-height:1.75;letter-spacing:.015em;margin:20px 0 0;color:#43594e}
.entry input:not([type=checkbox]){background:#fff;border:1px solid #bdcbc2;border-radius:16px;padding:16px 18px;min-height:60px}
.entry input::placeholder{color:#65796c;opacity:1}
.entry .primary{margin-top:16px;border-radius:16px;min-height:56px;text-decoration:none;text-align:center}
.entry .password-field{gap:8px}
.entry .password-field button{font-size:.9rem;padding:0 12px}
.entry #phrase-heading{font-size:1.05rem;font-weight:500;margin:0 0 22px;line-height:1.7}
.entry .check{margin-top:22px;text-align:left;color:#506458;justify-content:center;align-items:center}
.entry .check input{margin:0}
.entry .text-button{font-size:.9rem;display:inline-block;padding:12px 8px;text-underline-offset:5px;line-height:1.6}
.entry #status{text-align:left}
.entry #status .registration-next{display:block;min-height:44px;padding:10px 0 4px;color:inherit;font-weight:600;text-decoration:underline;text-underline-offset:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.welcome{width:100%;max-width:520px;text-align:center;padding:20px 0 48px}
.earth-scene{width:min(240px,80vw);margin:0 auto 26px;position:relative}
.earth-scene:before{content:"";position:absolute;inset:10%;border-radius:50%;background:#b9d8c866;filter:blur(32px)}
.earth{display:block;width:100%;height:auto;position:relative;overflow:visible}
.earth-world,.earth-meridian,.earth-orbit,.earth-point{transform-origin:120px 120px}
.welcome h2{font-weight:500;font-size:1.4rem;line-height:1.8;margin:0 0 28px;overflow-wrap:anywhere;outline:none}
.welcome h2 span{display:block}.welcome #welcome-name{font-size:1rem;color:#506458;margin-bottom:4px}
.welcome .text-button{display:inline-block;min-height:44px;padding:10px 14px;font-size:.9rem;color:#496654;text-decoration:none}
@media(prefers-reduced-motion:no-preference){
 #phrase-step{animation:entry-in .35s ease-out both}
 .welcome .earth-scene{animation:earth-arrive 1.25s cubic-bezier(.2,.7,.2,1) both}
 .welcome h2{animation:entry-in .85s .3s both}
 .welcome #continue{animation:entry-in .7s .7s both}
 .earth-land{animation:earth-drift 6s ease-in-out infinite alternate}
 .earth-point{animation:earth-turn 18s linear infinite}
 .earth-meridian{animation:earth-breathe 6s ease-in-out infinite alternate}
 @keyframes entry-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
 @keyframes earth-arrive{from{opacity:0;transform:scale(.92) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}
 @keyframes earth-drift{from{transform:translateX(0)}to{transform:translateX(-12px)}}
 @keyframes earth-turn{to{transform:rotate(360deg)}}
 @keyframes earth-breathe{to{transform:scaleX(.65)}}
}

.registration-hint{display:block;border:0;margin:44px 0 0;padding:0;letter-spacing:0;font-size:.9rem;line-height:1.8;color:#506458}
.registration-hint p{margin:0;text-align:center}
.registration-hint a{display:inline-block;padding:8px 12px;min-height:44px;color:#355543;text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:1px}
.registration-hint a span{display:inline-block;margin-left:6px;text-decoration:none}

@media(max-width:700px){.entry-brand img{width:76px;height:76px;margin-bottom:20px}.entry-brand h1{font-size:clamp(1.85rem,13vw,2.7rem)}.auth-page{padding-block:32px}}

/* ログインの地球。文字と入力の背後には、常に暗い余白を確保する。 */
.orbit-login{position:relative;isolation:isolate;background:#050e18;color:#f5f8fa;place-items:center start;padding:48px clamp(32px,9vw,180px);color-scheme:dark}
.login-universe{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;background:radial-gradient(ellipse at 82% 40%,#132c42 0, #091724 42%,#050e18 74%);transition:opacity .7s}
.login-universe:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#050e18 0,rgba(5,14,24,.98) 24%,rgba(5,14,24,.68) 40%,rgba(5,14,24,.08) 68%,transparent 88%)}
.login-planet{position:absolute;width:clamp(760px,84vw,1360px);aspect-ratio:1;left:43%;top:50%;transform:translateY(-50%)}
.login-planet img,.login-planet canvas{display:block;position:absolute;inset:0;width:100%;height:100%;transition:opacity .65s}
.login-planet img{mix-blend-mode:screen}
.login-planet canvas{opacity:0}
.login-planet.is-ready img{opacity:0}
.login-planet.is-ready canvas{opacity:1}
.orbit-login .entry{position:relative;max-width:360px;padding:0}
.orbit-login .entry-brand img{filter:invert(1);width:80px;height:80px}
.orbit-login .entry-brand h1{font-size:clamp(2rem,4.4vw,3.15rem);font-weight:500;letter-spacing:-.04em}
.orbit-login .entry-tagline{color:#d0dce3}
.orbit-login .entry input:not([type=checkbox]){background:#f5f8fa;border:1px solid #d1dfe5;color:#132e34;box-shadow:0 8px 40px #0002;color-scheme:light}
.orbit-login .entry input::placeholder{color:#526972}
.orbit-login .entry .primary{background:#d8f0e4;color:#163a2e}
.orbit-login .entry .primary:hover{background:#eefbf4}
.orbit-login .entry .password-field button{background:#172f3d;color:#eff8fc}
.orbit-login .entry .check,.orbit-login .entry .text-button,.orbit-login .registration-hint,.orbit-login .registration-hint a{color:#cedce3}
.orbit-login .registration-hint{margin-top:36px}
.orbit-login :is(button,a,input):focus-visible{outline-color:#9cdbca}
.orbit-login #status{background:#f9f0e6;color:#663715}
.planet-control{position:fixed;right:28px;bottom:28px;z-index:2;width:44px;height:44px;min-height:44px;padding:0;display:grid;place-items:center;border:1px solid #b3d4e14d;border-radius:50%;background:#081726b3;color:#d9eaf2}
.planet-control:hover{background:#183549}
.planet-control .motion-play{display:none}
.planet-control[aria-pressed="false"] .motion-play{display:block}
.planet-control[aria-pressed="false"] .motion-pause{display:none}
.planet-control:disabled{display:none}
.orbit-login.login-complete{place-items:center;padding-inline:24px}
.login-complete .login-universe{opacity:0}
.orbit-login .welcome #welcome-name,.orbit-login .welcome .text-button{color:#cedce3}
@media(max-width:760px){
 .orbit-login{padding:44px 24px 36px;place-items:center}
 .orbit-login .entry{max-width:360px}
 .orbit-login .entry-brand{margin-bottom:32px}
 .orbit-login .entry-brand img{width:68px;height:68px;margin-bottom:22px}
 .orbit-login .entry-brand h1{font-size:clamp(1.5rem,12vw,2.7rem)}
 .login-planet{width:170vw;max-width:980px;left:12%;top:-110px;transform:none}
 .login-universe:after{background:linear-gradient(90deg,rgba(5,14,24,.76),rgba(5,14,24,.36) 55%,rgba(5,14,24,.08)),linear-gradient(0deg,#050e18 18%,rgba(5,14,24,.96) 35%,rgba(5,14,24,.08) 82%)}
 .planet-control{top:16px;right:16px;bottom:auto}
}
@media(prefers-reduced-motion:reduce){.login-universe,.login-planet img,.login-planet canvas{transition:none}}