/* 2026 September: RESONANCE + impression room */
body.september-member{min-height:100vh;background:#d8e8f0;color:#263441;overflow-x:hidden}.september-member:before,.september-coordinate:before,.impression-room:before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(circle at 18% 24%,rgba(255,255,255,.92),transparent 25%),radial-gradient(circle at 74% 18%,rgba(192,207,255,.65),transparent 28%),radial-gradient(circle at 45% 72%,rgba(241,199,225,.55),transparent 28%),radial-gradient(circle at 83% 76%,rgba(188,225,239,.75),transparent 27%),linear-gradient(145deg,#e9f4f7 0%,#b9c9e8 42%,#e4ccd9 70%,#c7e5ec 100%);z-index:-3}.september-member:after{content:"";position:fixed;inset:0;pointer-events:none;opacity:.58;background-image:radial-gradient(circle,rgba(255,255,255,.95) 0 1px,transparent 1.4px);background-size:41px 41px;z-index:-2}.sept-top{position:fixed;top:0;left:0;right:0;height:70px;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:0 5vw;border-bottom:1px solid rgba(255,255,255,.46);background:rgba(226,237,246,.34);backdrop-filter:blur(18px)}.sept-brand{font:700 16px/1 sans-serif;letter-spacing:.23em;color:#304257;text-decoration:none}.sept-nav{display:flex;align-items:center;gap:28px}.sept-nav a{font:11px/1 sans-serif;letter-spacing:.16em;color:#53657a;text-decoration:none}.sept-nav a.star{font-size:19px;color:#fff;text-shadow:0 0 14px #fff,0 0 28px #94b9e7}.sept-main{min-height:100vh;padding-top:70px}.sept-home{min-height:calc(100vh - 70px);display:grid;place-items:center;padding:8vh 24px;text-align:center}.sept-home-inner{max-width:760px}.sept-home-kicker{font:10px/1.4 monospace;letter-spacing:.22em;color:#687a91}.sept-home h1{margin:25px 0 18px;font:400 clamp(48px,9vw,110px)/1 serif;letter-spacing:.07em;color:rgba(255,255,255,.96);text-shadow:0 5px 30px rgba(83,103,151,.3),0 0 30px rgba(255,255,255,.75)}.sept-home p{margin:0 auto 38px;max-width:520px;font-size:14px;line-height:1.9;color:#607084}.sept-home-links{display:flex;justify-content:center;align-items:center;gap:28px}.sept-home-links a{color:#42556c;text-decoration:none;border-bottom:1px solid rgba(65,92,119,.35);padding:8px 3px;font-size:12px;letter-spacing:.12em}.sept-home-links .star{border:0;color:#fff;font-size:22px;text-shadow:0 0 12px #fff,0 0 24px #91b9eb}.september-coordinate{min-height:calc(100vh - 70px);display:grid;place-items:center;padding:40px 20px;text-align:center}.coordinate-message{position:relative;z-index:2}.coordinate-message>span{font:10px monospace;letter-spacing:.2em;color:#6a7b91}.coordinate-message h1{margin:22px 0 15px;font:400 clamp(34px,6vw,68px)/1.2 serif;color:#fff;text-shadow:0 0 22px rgba(255,255,255,.9),0 8px 28px rgba(78,104,146,.25)}.coordinate-message p{font-size:13px;line-height:1.8;color:#65758a}.coordinate-message a{display:inline-block;margin-top:30px;color:#52667e;text-decoration:none;border-bottom:1px solid rgba(82,102,126,.4);padding:6px}.impression-room{position:relative;min-height:calc(100vh - 70px);display:grid;place-items:center;padding:70px 22px;overflow:hidden}.impression-sky{position:absolute;inset:0}.impression-sky i{position:absolute;left:var(--x);top:var(--y);width:var(--d);height:var(--d);border-radius:50%;background:white;opacity:var(--o);box-shadow:0 0 8px rgba(255,255,255,.9),0 0 18px rgba(181,206,247,.8)}.impression-panel{position:relative;z-index:2;width:min(720px,100%);padding:54px 56px;background:rgba(245,249,250,.4);border:1px solid rgba(255,255,255,.72);box-shadow:0 28px 70px rgba(87,105,140,.16);backdrop-filter:blur(18px);border-radius:4px}.impression-kicker{font:10px monospace;letter-spacing:.18em;color:#728196}.impression-panel h1{margin:15px 0 16px;font:400 42px/1.25 serif;color:#36475c}.impression-lead{font-size:13px;line-height:1.9;color:#66768a}.impression-form textarea{width:100%;height:210px;resize:vertical;box-sizing:border-box;margin-top:28px;padding:22px;border:1px solid rgba(99,119,146,.24);background:rgba(255,255,255,.48);color:#33465b;font:15px/1.8 serif;outline:none}.impression-form textarea:focus{border-color:rgba(105,137,180,.55);box-shadow:0 0 0 3px rgba(255,255,255,.25)}.impression-actions{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:15px}.impression-actions small{color:#7c8798;font-size:10px}.impression-actions button{border:1px solid rgba(85,111,145,.35);background:rgba(255,255,255,.55);color:#475d77;padding:11px 16px;cursor:pointer}.impression-msg{margin-top:22px;padding:12px 14px;background:rgba(255,255,255,.48);font-size:12px}.impression-msg.success{color:#426d68}.impression-msg.error{color:#96606b}.sept-footer{text-align:center;padding:18px;color:#8390a1;font:9px monospace;letter-spacing:.14em}@media(max-width:660px){.sept-top{padding:0 20px}.sept-nav{gap:15px}.impression-panel{padding:38px 24px}.impression-actions{align-items:flex-start;flex-direction:column}.sept-home-links{gap:18px}}