:root{
  --bg:#EBEBEB;
  --ink:#141414;
  --sub:#767676;
  --line:#141414;
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{color-scheme:light}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans JP","Noto Sans","Helvetica Neue",Helvetica,Arial,"Hiragino Kaku Gothic ProN","Hiragino Sans",sans-serif;
  font-size:16px;
  font-weight:400;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"palt";
}
::selection{background:var(--ink);color:var(--bg)}
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:40px;padding-right:40px}
img{-webkit-user-drag:none;-webkit-touch-callout:none;user-select:none;pointer-events:none}
a{color:var(--ink);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.arw{display:inline-block;transition:transform .18s ease}
a:hover .arw{transform:translateX(3px)}

.bg-noise{
  animation:bg-noise-anim .68s linear infinite alternate-reverse;
  background:url(../assets/bg_noise_300.jpg) repeat 0 0;
  bottom:-50%;height:200%;left:-50%;
  mix-blend-mode:hard-light;
  opacity:.5;
  pointer-events:none;
  position:fixed;
  right:-50%;top:-50%;
  width:200%;
  z-index:100;
}
@keyframes bg-noise-anim{
  0%{transform:translate(0)}
  10%{transform:translate(-5%,-5%)}
  20%{transform:translate(-10%,5%)}
  30%{transform:translate(5%,-10%)}
  40%{transform:translate(-5%,15%)}
  50%{transform:translate(-10%,5%)}
  60%{transform:translate(15%,0)}
  70%{transform:translateY(10%)}
  80%{transform:translate(-15%,0)}
  90%{transform:translate(10%,5%)}
  to{transform:translate(5%,0)}
}

.site-head{padding:30px 0}
.head-in{display:flex;justify-content:space-between;align-items:center}
.head-home img{display:block;height:44px;width:auto}
.nav{font-size:14px;letter-spacing:.08em}

/* === FEEDBACK PAGE === */
.fb-wrap{padding-top:80px;padding-bottom:120px}
.fb-ttl{font-size:36px;font-weight:300;letter-spacing:.02em;padding-bottom:32px;border-bottom:1.5px solid var(--line);margin-bottom:40px}
.fb-desc{font-size:15px;letter-spacing:.08em;line-height:1.9;max-width:640px}
.fb-desc-note{margin-top:12px;font-size:13px;color:var(--sub);letter-spacing:.06em;line-height:1.8;max-width:640px;margin-bottom:48px}
.fb-form{max-width:560px}
.form-field{margin-top:28px}
.form-label{display:block;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--sub);margin-bottom:8px}
.form-req{font-size:10px;background:var(--ink);color:var(--bg);padding:1px 3px;margin-left:6px;letter-spacing:.06em;vertical-align:middle}
.form-opt{font-size:10px;color:var(--sub);margin-left:6px;letter-spacing:.06em}
.form-char{font-size:11px;color:var(--sub);margin-left:6px;letter-spacing:0;text-transform:none}
.form-field input,.form-field select,.form-field textarea{display:block;width:100%;border:1px solid var(--line);background:var(--bg);font-size:16px;font-family:inherit;font-weight:400;color:var(--ink);padding:14px;outline:none;-webkit-appearance:none;appearance:none;line-height:2;letter-spacing:.06em;border-radius:0}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--sub);opacity:.6}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--ink);border-width:2px}
.form-field textarea{resize:vertical;min-height:120px;line-height:1.6}
.form-field.has-error input,.form-field.has-error select,.form-field.has-error textarea{border-color:#c93a32;border-width:2px}
.form-err{display:none;font-size:12px;color:#c93a32;margin-top:5px;letter-spacing:.06em}
.form-field.has-error .form-err{display:block}
.form-select-wrap{position:relative}
.form-select-wrap::after{content:'↓';position:absolute;right:12px;top:50%;transform:translateY(-50%);pointer-events:none;color:var(--sub);font-size:12px;font-family:inherit}
.form-note{margin-top:24px;font-size:12px;color:var(--sub);letter-spacing:.06em;line-height:1.8}
.form-note a{color:var(--sub);text-decoration:underline}
.form-submit{margin-top:36px}
.form-submit button{display:block;width:100%;background:var(--ink);color:var(--bg);border:none;cursor:pointer;font-size:16px;font-family:inherit;font-weight:400;letter-spacing:.18em;text-transform:uppercase;padding:17px 24px;transition:opacity .15s}
.form-submit button:hover{opacity:.65}
.hp-wrap{position:absolute;left:-9999px;top:-9999px;visibility:hidden;pointer-events:none;height:0;width:0;overflow:hidden}
.fb-success-overlay{position:fixed;inset:0;z-index:300;display:flex;align-items:center;justify-content:center;background:rgba(20,20,20,.65);padding:20px;visibility:hidden;opacity:0;transition:opacity .3s ease,visibility .3s}
.fb-success-overlay.is-visible{visibility:visible;opacity:1}
.fb-success-box{background:var(--bg);max-width:440px;width:100%;padding:48px 40px 40px;text-align:center}
.fb-success-ttl{font-size:32px;font-weight:300;letter-spacing:.14em;margin-bottom:24px}
.fb-success-text{font-size:15px;letter-spacing:.08em;line-height:1.9;color:var(--sub)}
.fb-success-btn{display:inline-block;margin-top:32px;background:none;border:1px solid var(--line);cursor:pointer;font-size:13px;font-family:inherit;letter-spacing:.16em;text-transform:uppercase;padding:10px 32px;color:var(--ink);transition:opacity .15s}
.fb-success-btn:hover{opacity:.6}
@media(max-width:768px){
  .fb-wrap{padding-top:48px;padding-bottom:80px}
  .fb-ttl{font-size:26px;padding-bottom:20px;margin-bottom:28px}
  .fb-form{max-width:100%}
  .fb-success-box{padding:36px 24px 32px}
}

.hero{padding:96px 0 130px}
.hero-logo{margin-bottom:77px}
.hero-logo img{display:block;width:min(760px,72%);height:auto}
.st{font-size:15px;letter-spacing:.14em;line-height:1.9;margin-top:18px}

.tools,.tool-next,.feedback,.site-foot{background:linear-gradient(var(--line),var(--line)) top center/calc(min(100%,var(--maxw)) - 80px) 1.5px no-repeat}
.tool{}
.tool-in{display:grid;grid-template-columns:130px 1fr 340px;gap:48px;align-items:center;padding-top:64px;padding-bottom:64px}
.tool-no{display:block;width:fit-content;background:var(--ink);color:var(--bg);font-size:15px;letter-spacing:0;padding:1px 2px}
.tool-name{font-size:40px;font-weight:400;letter-spacing:.01em;line-height:1.25}
.tool-desc{margin-top:14px;font-size:15px;letter-spacing:.14em;line-height:1.9}
.tool-cta{margin-top:30px;font-size:17px}
.tool-thumb img{display:block;width:100%;height:auto}
.tool-next{color:var(--sub)}
.next-in{display:grid;grid-template-columns:130px 1fr;gap:48px;padding-top:30px;padding-bottom:30px;font-size:16px}

.fb-in{display:flex;justify-content:space-between;align-items:center;gap:40px;padding-top:44px;padding-bottom:44px}
.fb-text{font-size:18px}
.fb-in a{font-size:17px}

.foot-in{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-top:36px;padding-bottom:80px;font-size:14px}
.foot-nav{display:flex;align-items:center;gap:28px}
.copy{color:var(--sub)}

/* === MODAL === */
.modal{position:fixed;inset:0;background:rgba(20,20,20,.65);z-index:200;overflow-y:auto;display:flex;justify-content:center;align-items:flex-start;padding:60px 20px;visibility:hidden;opacity:0;transition:opacity .25s ease,visibility .25s}
.modal.is-open{visibility:visible;opacity:1}
.modal-inner{position:relative;background:var(--bg);max-width:680px;width:100%;transform:translateY(12px);transition:transform .3s cubic-bezier(.2,.6,.2,1)}
.modal.is-open .modal-inner{transform:none}
.modal-close{position:absolute;top:20px;right:20px;background:none;border:none;cursor:pointer;font-size:22px;color:var(--ink);line-height:1;padding:4px 8px;font-family:inherit}
.modal-close:hover{opacity:.5}
.modal-body{padding:40px 48px 56px}
.modal-ttl{font-size:32px;font-weight:300;letter-spacing:.02em;line-height:1.2;padding-bottom:32px;border-bottom:1.5px solid var(--line);margin-bottom:40px}
.modal-sec{margin-top:36px}
.modal-sec-ttl{font-size:13px;font-weight:400;letter-spacing:.18em;text-transform:uppercase;color:var(--sub);margin-bottom:10px}
.modal-text{font-size:15px;letter-spacing:.08em;line-height:1.9}
.modal-text p+p{margin-top:.8em}
.modal-text a{text-decoration:underline}
.modal-updated{margin-top:48px;font-size:13px;color:var(--sub);letter-spacing:.06em}

/* ABOUT modal — ゆったり */
#modal-about .modal-body{padding:64px 72px 88px}
#modal-about .modal-ttl{margin-bottom:56px}
#modal-about .modal-text{font-size:16px;line-height:2.9;letter-spacing:.1em}
#modal-about .modal-text p+p{margin-top:1.6em}
#modal-about .modal-sec{margin-top:72px}
#modal-about .modal-sec-ttl{margin-bottom:16px}
body.modal-open{overflow:hidden}
@media(prefers-reduced-motion:reduce){.modal,.modal-inner{transition:none}}
@media(max-width:768px){
  .modal{padding:20px 16px 40px}
  .modal-body{padding:36px 24px 48px}
  .modal-close{top:14px;right:14px}
  .modal-ttl{font-size:24px;padding-bottom:20px;margin-bottom:28px}
  #modal-about .modal-body{padding:48px 28px 64px}
  #modal-about .modal-ttl{margin-bottom:36px}
  #modal-about .modal-text{font-size:15px;line-height:2.6}
  #modal-about .modal-sec{margin-top:48px}
}

@media (prefers-reduced-motion:no-preference){
  .hero-logo,.st{opacity:0;transform:translateY(10px);animation:rise .7s cubic-bezier(.2,.6,.2,1) forwards}
  .st:nth-of-type(1){animation-delay:.1s}
  .st:nth-of-type(2){animation-delay:.18s}
  .st:nth-of-type(3){animation-delay:.26s}
  @keyframes rise{to{opacity:1;transform:none}}
}

@media (max-width:768px){
  .wrap{padding-left:20px;padding-right:20px}
  .tools,.tool-next,.feedback,.site-foot{background-size:calc(100% - 40px) 1.5px}
  .site-head{padding:18px 0}
  .hero{padding:56px 0 72px}
  .hero-logo{margin-bottom:48px}
  .hero-logo img{width:min(320px,86%)}
  .st{font-size:13px;letter-spacing:.1em;margin-top:14px}
  .sec-label{font-size:12px;padding:16px 0}
  .tool-in{display:flex;flex-direction:column;align-items:stretch;gap:0;padding-top:32px;padding-bottom:32px}
  .tool-no{order:0;margin-bottom:16px;font-size:13px}
  .tool-thumb{order:1;margin-bottom:20px}
  .tool-body{order:2}
  .tool-name{font-size:26px}
  .tool-desc{font-size:15px;margin-top:10px}
  .tool-cta{margin-top:18px;font-size:15px}
  .next-in{grid-template-columns:auto 1fr;gap:16px;padding-top:18px;padding-bottom:18px;font-size:14px}
  .fb-in{display:block;padding-top:28px;padding-bottom:28px}
  .fb-text{font-size:15px;margin-bottom:12px}
  .fb-in a{font-size:15px}
  .foot-in{flex-direction:column;align-items:center;text-align:center;gap:14px;padding-top:28px;padding-bottom:56px;font-size:13px}
  .foot-nav{flex-wrap:wrap;justify-content:center;gap:12px 20px}
}