:root{
  --bg:#f7f9ff; --surface:#fff; --surface-2:#fbfcff; --text:#17213d; --muted:#66728e;
  --line:#e4e9f5; --primary:#5a35f2; --blue:#1687ff; --cyan:#18c6d4; --pink:#ff70a8;
  --green:#59d88a; --orange:#ffbd59; --shadow:0 18px 46px rgba(49,68,120,.12); --shadow-sm:0 9px 24px rgba(49,68,120,.09);
  --radius:24px; --max:1280px;
}
*{box-sizing:border-box} html,body{margin:0;min-height:100%;}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;color:var(--text);background:radial-gradient(circle at 6% 18%,rgba(24,198,212,.13),transparent 27%),radial-gradient(circle at 96% 32%,rgba(98,52,242,.11),transparent 24%),linear-gradient(180deg,#fff 0%,#f7f9ff 100%);}
a{color:inherit;text-decoration:none} button,input{font:inherit}.container{max-width:var(--max);margin:0 auto;padding:0 32px}.page{min-height:100vh;display:flex;flex-direction:column}.main-area{flex:1}.header{height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:10px;min-width:0;font-weight:950;letter-spacing:-.02em;color:#2d4eea}.brand img{width:42px;height:42px;object-fit:cover;border-radius:10px;display:block}.brand span{font-size:28px;line-height:1;background:linear-gradient(135deg,#6737f6 8%,#1687ff 92%);-webkit-background-clip:text;background-clip:text;color:transparent}.brand.small img{width:30px;height:30px;border-radius:8px}.brand.small span{font-size:20px}.nav{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:800}.nav-login{height:40px;border-radius:12px;padding:0 18px;background:linear-gradient(135deg,var(--primary),var(--blue));color:#fff!important;display:inline-flex;align-items:center;box-shadow:0 10px 22px rgba(72,82,235,.2)}.btn{height:50px;border:0;border-radius:15px;padding:0 24px;font-weight:900;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;white-space:nowrap}.btn.primary{background:linear-gradient(135deg,var(--primary),var(--blue));color:#fff;box-shadow:0 14px 28px rgba(72,82,235,.24)}.btn.ghost{background:#fff;border:1px solid #d8e0ef;color:#1b5ccc;box-shadow:var(--shadow-sm)}.btn.light{background:#fff;color:#2855d9}.footer{border-top:1px solid var(--line);margin-top:auto;background:rgba(255,255,255,.72);backdrop-filter:blur(14px)}.footer-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;color:#5e6881;font-size:13px;font-weight:700}.footer-links{display:flex;gap:26px;flex-wrap:wrap}.footer-links a:hover,.nav a:hover{color:#4f39f3}.copyright{white-space:nowrap}.card{background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
/* Landing */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(460px,1fr);align-items:center;gap:56px;padding:36px 0 54px}.eyebrow{font-size:14px;color:#4b5876;font-weight:900;margin-bottom:16px}.hero h1{margin:0 0 22px;font-size:62px;line-height:1.12;letter-spacing:-.055em;font-weight:950}.gradient-text{background:linear-gradient(135deg,#6737f6 10%,#1687ff 88%);-webkit-background-clip:text;background-clip:text;color:transparent}.lead{font-size:17px;line-height:1.9;font-weight:650;color:#33405f;margin:0 0 20px}.release-note{display:inline-flex;align-items:center;margin:16px 0 0;padding:10px 16px;border-radius:999px;background:#eef2ff;color:#4c38ea;font-size:13px;font-weight:900;border:1px solid #dfe5ff}.hero-actions{display:flex;gap:18px;flex-wrap:wrap;margin:0}.concept{height:390px;position:relative;border-radius:38px;background:linear-gradient(145deg,rgba(255,255,255,.9),rgba(255,255,255,.48));box-shadow:var(--shadow);overflow:hidden}.concept:before,.concept:after{content:"";position:absolute;border-radius:50%;border:2px dashed rgba(92,78,230,.22);left:50%;top:50%;transform:translate(-50%,-50%) rotate(-12deg)}.concept:before{width:430px;height:260px}.concept:after{width:520px;height:320px;border-style:solid;opacity:.45}.concept .center{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:168px;height:168px;border-radius:50%;background:linear-gradient(135deg,#6737f6,#1687ff);color:#fff;display:flex;align-items:center;justify-content:center;font-size:32px;font-weight:950;box-shadow:0 22px 44px rgba(66,82,220,.25)}.concept .node{position:absolute;border-radius:999px;background:#fff;border:1px solid #e2e8f4;box-shadow:0 14px 30px rgba(49,68,120,.13);padding:18px 26px;font-weight:900}.concept .n1{left:22%;top:15%}.concept .n2{right:10%;top:22%}.concept .n3{left:15%;bottom:18%}.concept .n4{right:18%;bottom:18%}.dot{position:absolute;border-radius:50%;background:linear-gradient(135deg,#5a35f2,#1687ff);opacity:.78}.d1{width:28px;height:28px;left:38%;top:26%}.d2{width:18px;height:18px;right:28%;top:36%}.d3{width:22px;height:22px;left:58%;bottom:18%}.section-title{text-align:center;margin:8px 0 24px;font-size:27px;font-weight:950;letter-spacing:.02em}.steps{display:grid;grid-template-columns:1fr 34px 1fr 34px 1fr;align-items:center;gap:16px;margin-bottom:32px}.step{min-height:120px;padding:22px;display:flex;align-items:center;gap:18px}.num{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--blue));color:#fff;display:grid;place-items:center;font-weight:950;flex:none}.step-icon{font-size:36px;line-height:1}.step h3,.feature h3{margin:0 0 8px;font-size:17px}.step p,.feature p{margin:0;color:var(--muted);line-height:1.65;font-size:13px;font-weight:650}.arrow{text-align:center;font-size:30px;color:#2b3d72}.features{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:28px}.feature{padding:24px}.feature .feature-icon{width:60px;height:60px;border-radius:22px;background:#eef2ff;display:grid;place-items:center;font-size:30px;margin-bottom:16px}.faq{padding-bottom:44px}.faq-list{display:grid;gap:14px;max-width:860px;margin:0 auto}.faq details{padding:0}.faq summary{cursor:pointer;list-style:none;padding:20px 24px;font-weight:900}.faq summary::-webkit-details-marker{display:none}.faq p{margin:0;padding:0 24px 20px;color:var(--muted);line-height:1.8;font-weight:650}.cta{margin:18px 0 36px;padding:26px 36px;border-radius:24px;display:flex;align-items:center;justify-content:space-between;gap:24px;background:linear-gradient(135deg,#6737f6,#1687ff);color:#fff;box-shadow:0 16px 40px rgba(52,76,221,.2)}.cta h2{margin:0 0 6px;font-size:24px}.cta p{margin:0;opacity:.9;font-weight:650}
/* Legal */
.legal{max-width:920px;padding-top:34px;padding-bottom:56px}.legal h1{font-size:42px;line-height:1.18;margin:0 0 10px;letter-spacing:-.03em}.legal .updated{margin:0 0 24px;color:#7a849a;font-weight:750}.legal-card{padding:28px 34px}.legal-card h2{font-size:22px;margin:30px 0 10px}.legal-card h2:first-child{margin-top:0}.legal-card p,.legal-card li{color:#46516d;line-height:1.9;font-weight:650}.legal-card ul{padding-left:1.2em}.legal-card a{color:#4c38ea;font-weight:900}
/* Login */
.login-wrap{display:grid;grid-template-columns:minmax(0,1fr) 620px;gap:70px;align-items:center;padding:44px 0 52px}.login-copy h1{margin:0 0 22px;font-size:56px;line-height:1.16;letter-spacing:-.055em}.login-copy p{margin:0;font-size:17px;line-height:1.9;font-weight:650;color:#33405f}.logo-planet{height:310px;position:relative;margin-top:40px}.logo-planet:before,.logo-planet:after{content:"";position:absolute;left:50%;top:50%;border:2px solid rgba(103,55,246,.16);border-radius:50%;transform:translate(-50%,-50%) rotate(-14deg)}.logo-planet:before{width:500px;height:190px}.logo-planet:after{width:410px;height:150px;border-style:dashed}.logo-planet img{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:280px;filter:drop-shadow(0 24px 40px rgba(91,53,245,.2))}.login-card{padding:44px 50px;border-radius:28px;background:rgba(255,255,255,.9)}.login-card h1{text-align:center;margin:0 0 12px;font-size:34px}.login-sub{text-align:center;color:#475372;font-weight:650;line-height:1.65;margin:0 0 28px}.socials{display:grid;gap:12px;margin-bottom:24px}.social{height:52px;border-radius:13px;border:1px solid #dbe2ef;background:#fff;font-weight:850;display:flex;align-items:center;justify-content:center;gap:12px}.divider{display:flex;align-items:center;gap:18px;color:#8490a8;font-weight:750;font-size:13px;margin:20px 0}.divider:before,.divider:after{content:"";height:1px;background:#e3e8f3;flex:1}.form{display:grid;gap:15px}.field label{display:block;font-weight:850;margin-bottom:8px}.input{height:54px;border-radius:13px;border:1px solid #d9e1ef;background:#fff;display:flex;align-items:center;gap:10px;padding:0 14px;color:#7e879a}.input input{border:0;outline:0;flex:1;color:var(--text);min-width:0}.form-row{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;font-weight:750;color:#66718b}.check{display:flex;align-items:center;gap:8px}.check:before{content:"";width:20px;height:20px;border:1px solid #cfd8e8;border-radius:6px;background:#fff}.login-card .btn{width:100%;margin-top:4px}.signup{text-align:center;color:#516078;margin-top:22px;font-weight:750}.signup a{color:#1b72ff}
/* Dashboard */
.app{min-height:100vh;display:grid;grid-template-columns:250px 1fr;background:#fff}.sidebar{border-right:1px solid var(--line);padding:26px 22px;display:flex;flex-direction:column;gap:28px}.sidebar .brand{min-width:auto}.menu{display:grid;gap:8px}.menu a{padding:13px 14px;border-radius:14px;color:#384663;font-weight:850;display:flex;gap:11px;align-items:center}.menu a.active{background:#eef2ff;color:#4b34e7}.logout{margin-top:auto;padding:13px 14px;color:#566078;font-weight:850}.app-main{min-width:0;background:linear-gradient(180deg,#fff,#f8faff)}.topbar{height:84px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:24px;padding:0 34px;background:rgba(255,255,255,.9);position:sticky;top:0;z-index:5}.search{max-width:560px;flex:1;height:46px;border:1px solid #dce3f1;border-radius:23px;background:#fff;display:flex;align-items:center;padding:0 18px;color:#77829b;gap:10px}.userbar{margin-left:auto;display:flex;align-items:center;gap:18px}.bell{font-size:24px;position:relative}.bell span{position:absolute;right:-5px;top:-5px;background:#5940f5;color:#fff;border-radius:50%;font-size:11px;width:18px;height:18px;display:grid;place-items:center}.avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,#ffd27d,#48b6ff);display:grid;place-items:center;font-weight:950;color:#fff}.content{max-width:1260px;padding:38px 38px 54px}.welcome{display:grid;grid-template-columns:1fr 560px;gap:30px;align-items:center;margin-bottom:26px}.welcome h1{font-size:38px;line-height:1.2;margin:0 0 12px;background:linear-gradient(135deg,#6539f7,#1687ff);-webkit-background-clip:text;background-clip:text;color:transparent}.welcome p{font-size:16px;margin:0;color:#4f5b77;font-weight:650}.activity{padding:20px 24px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.stat{border-right:1px solid var(--line);padding:4px 14px}.stat:last-child{border-right:0}.stat .label{font-size:14px;color:#6a748d;font-weight:850}.stat .value{font-size:30px;font-weight:950}.stat .up{font-size:12px;color:#12a66a;font-weight:850}.panel{background:rgba(255,255,255,.84);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-sm);padding:22px;margin-bottom:22px}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.panel h2{margin:0;font-size:20px}.see{font-size:13px;color:#4a39ee;font-weight:900}.theme-row{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.theme{border:1px solid #e2e8f3;background:#fff;border-radius:18px;padding:16px;display:flex;gap:12px;align-items:center;min-width:0}.theme .emoji{font-size:28px}.theme b,.theme span{display:block}.theme span{font-size:12px;color:#6a748d;font-weight:700;margin-top:3px}.dash-grid{display:grid;grid-template-columns:1fr 360px;gap:22px}.word-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.word-card{overflow:hidden;background:#fff}.map-preview{height:170px;position:relative;background:radial-gradient(circle at center,rgba(97,64,245,.12),transparent 62%)}.mini-center{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:74px;height:74px;border-radius:50%;background:linear-gradient(135deg,#53b8ff,#6c35f6);color:#fff;display:grid;place-items:center;font-weight:950}.mini-node{position:absolute;border-radius:999px;background:#eef7ff;border:1px solid #d5eaff;color:#2052a2;font-size:12px;font-weight:900;padding:6px 10px}.m1{left:13%;top:24%}.m2{right:12%;top:20%}.m3{left:11%;bottom:24%}.m4{right:10%;bottom:26%}.m5{left:39%;top:12%}.m6{right:35%;bottom:12%}.card-body{padding:16px}.card-body h3{margin:0 0 10px;font-size:18px}.meta{display:flex;justify-content:space-between;color:#66718b;font-size:13px;font-weight:750}.side-list{display:grid;gap:10px}.side-item{display:grid;grid-template-columns:54px 1fr auto;gap:12px;align-items:center;padding:10px;border:1px solid #e3e8f3;border-radius:16px;background:#fff}.thumb{width:54px;height:42px;border-radius:12px;background:linear-gradient(135deg,#eef2ff,#e9fbff)}.pill{border:0;background:#f0eaff;color:#5b35f5;border-radius:12px;padding:7px 12px;font-weight:900}.recent-row{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.recent{padding:14px;border:1px solid #e3e8f3;border-radius:16px;background:#fff;display:flex;align-items:center;gap:10px;font-weight:850}.recent small{display:block;color:#727d96;font-weight:700;margin-top:2px}
/* Index */
.index-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin:34px 0}.mock-link{padding:28px;display:block}.mock-link h2{margin:0 0 10px}.mock-link p{margin:0;color:var(--muted);line-height:1.65}.note{padding:18px 22px;border-radius:18px;background:#fff;border:1px solid var(--line);color:#566078;font-weight:700;line-height:1.65}
@media(max-width:1050px){.container{padding:0 20px}.brand img{width:38px;height:38px}.brand span{font-size:25px}.nav{gap:14px}.hero,.login-wrap,.welcome,.dash-grid{grid-template-columns:1fr}.hero{gap:30px}.hero h1,.login-copy h1{font-size:44px}.concept{height:320px}.steps{grid-template-columns:1fr}.arrow{transform:rotate(90deg)}.features,.theme-row,.word-grid,.recent-row,.index-grid{grid-template-columns:1fr}.app{grid-template-columns:1fr}.sidebar{display:none}.topbar{padding:0 18px}.content{padding:26px 18px}.activity{grid-template-columns:1fr}.stat{border-right:0;border-bottom:1px solid var(--line)}.stat:last-child{border-bottom:0}.login-card{padding:34px 24px}.footer-inner{height:auto;padding:22px 0}.login-wrap{gap:28px}.login-card{max-width:620px}.logo-planet{display:none}.hero{padding-top:20px}.concept .center{width:140px;height:140px}.concept .node{padding:14px 18px}}
@media(max-width:640px){.header{height:auto;padding:20px 0;align-items:flex-start}.nav{display:none}.hero-actions,.cta{align-items:stretch}.btn{width:100%}.cta{flex-direction:column;text-align:center}.login-wrap{padding-top:22px}.login-card{border-radius:22px}.form-row{align-items:flex-start;flex-direction:column}.userbar .btn{display:none}.search{max-width:none}.hero h1,.login-copy h1{font-size:38px}.lead,.login-copy p{font-size:15px}.brand img{width:36px;height:36px}.brand span{font-size:24px}.footer-inner{align-items:flex-start;flex-direction:column}.legal h1{font-size:34px}.legal-card{padding:24px 22px}}
.app-store-btn{gap:10px}.apple-mark{font-size:21px;line-height:1;transform:translateY(-1px)}