/* =========================================================
   Reiwa Zaitaku Contact Form — 5-step wizard
   トップページのdesign tokenを継承
   ========================================================= */
:root{
  --main:#10243E;
  --main-2:#0B1A2E;
  --cta:#153B66;
  --cta-h:#0F2C4E;
  --tel:#1D6B57;
  --tel-h:#155442;
  --accent:#C89B3C;
  --sub:#5C6B7A;
  --line:#E5E8EE;
  --line-strong:#C6CFDA;
  --bg:#FFFFFF;
  --bg-2:#F7F8FA;
  --bg-3:#EEF2F7;
  --text:#0F1B2D;
  --danger:#B4322A;
  --ok:#1D6B57;
  --shadow-sm:0 1px 2px rgba(16,36,62,.05), 0 2px 8px rgba(16,36,62,.04);
  --shadow-md:0 6px 24px rgba(16,36,62,.08);
  --shadow-cta:0 6px 18px rgba(21,59,102,.28);
  --radius:12px;
  --radius-lg:18px;
  --sans:"Noto Sans JP","Hiragino Kaku Gothic ProN","Yu Gothic",system-ui,sans-serif;
  --serif:"Noto Serif JP","Hiragino Mincho ProN","Yu Mincho",serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  color:var(--text);
  background:var(--bg-2);
  line-height:1.85;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
br.sp{display:none}
@media (max-width:720px){
  br.sp{display:inline}
  br.pc{display:none}
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* ================= Header ================= */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  max-width:1160px;margin:0 auto;padding:14px 24px;gap:16px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  width:38px;height:38px;border-radius:8px;
  background:var(--main);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:18px;letter-spacing:.02em;
}
.brand-mark span{color:var(--accent)}
.brand-name{
  font-family:var(--serif);font-weight:700;font-size:17px;color:var(--main);
  letter-spacing:.04em;line-height:1.2;
}
.brand-name small{
  display:block;font-family:var(--sans);
  font-size:10.5px;color:var(--sub);font-weight:500;
  letter-spacing:.08em;margin-top:2px;
}
.header-help{
  font-size:12.5px;color:var(--sub);text-align:right;line-height:1.5;
}
.header-help .num{
  font-family:var(--serif);color:var(--main);font-weight:700;font-size:17px;letter-spacing:.02em;
}
@media (max-width:520px){
  .brand-name small{display:none}
  .header-help{display:none}
  .brand{gap:8px}
  .brand-mark{width:32px;height:32px;font-size:15px}
  .brand-name{font-size:14px;white-space:nowrap}
  .header-inner{gap:10px}
}

/* ================= Container ================= */
.container{max-width:820px;margin:0 auto;padding:0 24px}
@media (max-width:720px){.container{padding:0 16px}}

/* ================= Form Hero ================= */
.form-hero{
  padding:44px 0 24px;
  background:#fff;
  border-bottom:1px solid var(--line);
}
.form-hero .eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;
  color:var(--accent);font-weight:700;margin-bottom:12px;text-transform:uppercase;
}
.form-hero h1{
  font-family:var(--serif);
  font-size:clamp(24px,3.2vw,32px);
  color:var(--main);line-height:1.4;letter-spacing:.02em;
  margin:0 0 16px;font-weight:700;
}
.form-hero p.lead{
  color:var(--text);font-size:15px;line-height:1.9;margin:0 0 14px;
}
.form-hero .safety{
  display:flex;flex-wrap:wrap;gap:14px;
  margin-top:16px;padding:16px 20px;
  background:var(--bg-2);border-radius:10px;
  border:1px solid var(--line);
  color:var(--sub);font-size:13px;line-height:1.8;
}
.form-hero .safety span{display:inline-flex;align-items:center;gap:6px;font-weight:500;color:var(--text)}
.form-hero .safety span::before{
  content:"";width:5px;height:5px;border-radius:50%;background:var(--tel);
}
.form-hero .safety .note{color:var(--sub);font-weight:400;font-size:12.5px;flex-basis:100%}

/* ================= Progress bar ================= */
.progress{
  position:sticky;top:69px;z-index:40;
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.progress-inner{
  max-width:820px;margin:0 auto;padding:16px 24px;
  display:flex;align-items:center;gap:8px;
}
.progress-step{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;
  color:var(--sub);
  font-size:11px;font-weight:600;letter-spacing:.02em;
  text-align:center;
}
.progress-step .num{
  width:26px;height:26px;border-radius:50%;
  background:#fff;border:1.5px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:12px;color:var(--sub);
  transition:all .2s ease;
}
.progress-step .lbl{display:none;line-height:1.3}
.progress-step.done .num{background:var(--tel);border-color:var(--tel);color:#fff}
.progress-step.done .num::before{content:"✓";font-family:var(--sans);font-size:14px}
.progress-step.done .num span{display:none}
.progress-step.active .num{background:var(--main);border-color:var(--main);color:#fff}
.progress-step.active{color:var(--main)}
.progress-step .connect{
  height:2px;background:var(--line);flex:1;margin:0 -4px;
}
.progress-step.done + .progress-step .connect{background:var(--tel)}
.progress-mobile-label{
  display:none;
  font-size:12px;color:var(--sub);
  padding:10px 24px 0;text-align:center;
  max-width:820px;margin:0 auto;
}
.progress-mobile-label b{color:var(--main);font-weight:700;font-family:var(--serif)}
@media (min-width:520px){
  .progress-step .lbl{display:block}
}

/* ================= Form main ================= */
.form-main{padding:32px 0 80px}
form.multistep{
  background:#fff;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  padding:36px 40px;
  box-shadow:var(--shadow-sm);
}
@media (max-width:640px){
  form.multistep{padding:24px 20px;border-radius:14px}
}

/* Step panel */
.step{display:none}
.step.active{display:block;animation:step-in .35s ease}
@keyframes step-in{
  from{opacity:0;transform:translateY(6px)}
  to{opacity:1;transform:none}
}
.step-head{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.step-head .n{
  display:inline-block;
  font-family:var(--serif);color:var(--accent);
  font-size:13px;letter-spacing:.16em;font-weight:700;
  margin-bottom:6px;
}
.step-head h2{
  font-family:var(--serif);
  font-size:22px;color:var(--main);
  margin:0 0 10px;font-weight:700;letter-spacing:.02em;
}
.step-head p{margin:0;color:var(--sub);font-size:14px;line-height:1.85}

/* Field */
.field{margin-bottom:22px}
.field label{
  display:flex;align-items:center;gap:8px;
  font-size:14px;font-weight:700;color:var(--main);
  margin-bottom:8px;line-height:1.5;
}
.field label .req{
  font-size:10.5px;letter-spacing:.04em;
  background:var(--main);color:#fff;
  padding:2px 7px;border-radius:3px;font-weight:700;
}
.field label .opt{
  font-size:10.5px;letter-spacing:.04em;
  background:var(--bg-2);color:var(--sub);
  padding:2px 7px;border-radius:3px;font-weight:600;
  border:1px solid var(--line);
}
.field .hint{
  color:var(--sub);font-size:12.5px;line-height:1.7;
  margin:6px 0 0;
}

/* Inputs */
.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field input[type="number"],
.field textarea,
.field select{
  width:100%;
  background:#fff;color:var(--text);
  border:1px solid var(--line-strong);
  border-radius:8px;
  padding:12px 14px;
  font-family:inherit;font-size:15px;line-height:1.6;
  outline:none;
  transition:border-color .15s ease, box-shadow .15s ease;
}
.field input:focus,
.field textarea:focus,
.field select:focus{
  border-color:var(--cta);
  box-shadow:0 0 0 3px rgba(21,59,102,.14);
}
.field textarea{resize:vertical;min-height:110px;line-height:1.85}
.field input::placeholder,
.field textarea::placeholder{color:#98A2B3}

/* Radio group (segmented) */
.radio-group{
  display:grid;grid-template-columns:1fr 1fr;gap:8px;
}
.radio-group.three{grid-template-columns:1fr 1fr 1fr}
.radio-group label{
  display:flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 16px;border:1.5px solid var(--line-strong);border-radius:8px;
  background:#fff;
  color:var(--text);font-weight:500;font-size:14.5px;
  cursor:pointer;
  transition:all .15s ease;
  margin:0;
  text-align:center;
  min-height:52px;
}
.radio-group label:hover{border-color:var(--main)}
.radio-group input[type="radio"]{
  appearance:none;-webkit-appearance:none;
  width:18px;height:18px;border-radius:50%;
  border:1.5px solid var(--line-strong);
  margin:0;flex-shrink:0;position:relative;
  transition:border-color .15s ease;
}
.radio-group input[type="radio"]:checked{border-color:var(--cta);border-width:5px;background:#fff}
.radio-group label:has(input:checked){
  border-color:var(--cta);
  background:rgba(21,59,102,.05);
  color:var(--main);font-weight:700;
}
@media (max-width:520px){
  .radio-group.three{grid-template-columns:1fr;gap:6px}
  .radio-group label{min-height:48px;font-size:14px}
}

/* Select */
.field select{
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'><path fill='%235C6B7A' d='M6 8L0 0h12z'/></svg>");
  background-repeat:no-repeat;background-position:right 14px center;
  padding-right:38px;
}

/* Two-column row */
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.row .field{margin-bottom:0}
@media (max-width:600px){.row{grid-template-columns:1fr;gap:22px}}

/* Error */
.field.error input,
.field.error textarea,
.field.error select{
  border-color:var(--danger);
  box-shadow:0 0 0 3px rgba(180,50,42,.12);
}
.field .err-msg{
  display:none;
  color:var(--danger);font-size:12.5px;margin-top:6px;
}
.field.error .err-msg{display:block}

/* Conditional section */
.if-corp,.if-sole,.if-past-yes{display:none}

/* ================= File upload ================= */
.file-group{margin-bottom:32px}
.file-group h3{
  font-family:var(--serif);
  font-size:15px;color:var(--main);
  margin:0 0 12px;font-weight:700;letter-spacing:.02em;
  padding-left:12px;border-left:3px solid var(--accent);
}
.file-field{
  background:var(--bg-2);
  border:1px dashed var(--line-strong);
  border-radius:10px;
  padding:16px 18px;
  margin-bottom:10px;
  transition:all .15s ease;
}
.file-field:hover{border-color:var(--main);background:#fff}
.file-field.has-file{background:#fff;border-style:solid;border-color:var(--tel)}
.file-field .file-head{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
}
.file-field .file-title{
  flex:1;min-width:180px;
}
.file-field .file-title strong{
  font-size:14px;color:var(--main);font-weight:700;display:block;
}
.file-field .file-title span{
  display:block;font-size:12px;color:var(--sub);margin-top:2px;line-height:1.6;
}
.file-field .file-actions{display:flex;gap:8px;align-items:center}
.file-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 16px;border-radius:6px;
  background:#fff;color:var(--main);
  border:1.5px solid var(--line-strong);
  font-size:13px;font-weight:700;letter-spacing:.02em;
  cursor:pointer;transition:all .15s ease;
  min-height:38px;
}
.file-btn:hover{border-color:var(--main)}
.file-btn svg{width:14px;height:14px}
.file-btn.remove{
  color:var(--danger);border-color:transparent;padding:6px 10px;background:transparent;
}
.file-btn.remove:hover{background:rgba(180,50,42,.06)}
.file-field input[type="file"]{display:none}
.file-preview{
  display:none;
  margin-top:12px;padding-top:12px;border-top:1px solid var(--line);
  font-size:12.5px;color:var(--sub);
}
.file-field.has-file .file-preview{display:flex;align-items:center;gap:10px}
.file-preview .thumb{
  width:36px;height:36px;border-radius:6px;
  background:var(--bg-3);color:var(--main);
  display:flex;align-items:center;justify-content:center;
  font-size:10px;font-weight:700;letter-spacing:.02em;
  flex-shrink:0;overflow:hidden;
}
.file-preview .thumb img{width:100%;height:100%;object-fit:cover}
.file-preview .meta{flex:1;min-width:0;line-height:1.4}
.file-preview .meta .name{
  color:var(--main);font-weight:600;font-size:12.5px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.file-preview .meta .size{color:var(--sub);font-size:11px;margin-top:2px}

/* ================= Review (step 5) ================= */
.review-list{
  background:var(--bg-2);border-radius:10px;
  padding:6px 20px;
  margin-bottom:24px;
}
.review-list dl{
  margin:0;
  display:grid;grid-template-columns:1fr;
}
.review-list .row2{
  display:grid;grid-template-columns:160px 1fr;
  gap:16px;padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:13.5px;line-height:1.75;
}
.review-list .row2:last-child{border-bottom:none}
.review-list dt{color:var(--sub);font-weight:700;font-size:12.5px;letter-spacing:.02em;margin:0}
.review-list dd{margin:0;color:var(--text)}
.review-list dd.muted{color:#98A2B3;font-style:italic;font-size:12.5px}
.review-group{margin-bottom:16px}
.review-group h3{
  font-family:var(--serif);font-size:15px;color:var(--main);
  margin:20px 0 10px;font-weight:700;
  display:flex;align-items:center;gap:8px;
}
.review-group h3 button{
  font-family:var(--sans);font-size:11.5px;color:var(--cta);
  background:transparent;border:0;padding:2px 6px;
  cursor:pointer;font-weight:700;letter-spacing:.02em;
  border-radius:4px;
  margin-left:auto;
}
.review-group h3 button:hover{background:rgba(21,59,102,.06)}
@media (max-width:520px){
  .review-list .row2{grid-template-columns:1fr;gap:2px;padding:12px 0}
  .review-list dt{font-size:11.5px}
}

/* Notice box */
.notice{
  background:var(--bg-2);border-left:3px solid var(--accent);
  padding:14px 18px;border-radius:6px;
  margin-bottom:20px;
  font-size:13px;color:var(--sub);line-height:1.85;
}
.notice ul{margin:6px 0 0;padding-left:20px}
.notice ul li{margin:2px 0}

/* Agreement */
.agreement{
  display:flex;align-items:flex-start;gap:12px;
  padding:16px 20px;
  background:var(--bg-2);border-radius:8px;
  margin-bottom:24px;font-size:14px;line-height:1.7;
  cursor:pointer;user-select:none;
}
.agreement input[type="checkbox"]{
  appearance:none;-webkit-appearance:none;
  width:20px;height:20px;border-radius:4px;
  border:1.5px solid var(--line-strong);
  background:#fff;flex-shrink:0;margin-top:2px;
  position:relative;cursor:pointer;
  transition:all .15s ease;
}
.agreement input[type="checkbox"]:checked{
  background:var(--cta);border-color:var(--cta);
}
.agreement input[type="checkbox"]:checked::after{
  content:"";position:absolute;
  left:6px;top:2px;width:5px;height:10px;
  border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg);
}
.agreement a{color:var(--cta);text-decoration:underline;text-underline-offset:2px}

/* ================= Nav buttons ================= */
.step-nav{
  display:flex;gap:12px;justify-content:space-between;
  padding-top:24px;margin-top:28px;
  border-top:1px solid var(--line);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 22px;border-radius:10px;
  font-weight:700;font-size:14.5px;letter-spacing:.02em;
  transition:transform .15s ease, box-shadow .15s ease, background .2s ease, border-color .2s ease;
  min-height:52px;white-space:nowrap;
  border:0;cursor:pointer;font-family:inherit;
}
.btn:hover:not(:disabled){transform:translateY(-1px)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn .arrow{transition:transform .2s;display:inline-block}
.btn:hover:not(:disabled) .arrow{transform:translateX(3px)}
.btn-primary{
  background:var(--cta);color:#fff;
  box-shadow:var(--shadow-cta);padding:16px 26px;font-size:15px;min-height:56px;
}
.btn-primary:hover:not(:disabled){background:var(--cta-h)}
.btn-primary.large{padding:20px 32px;font-size:17px;min-height:64px}
.btn-back{
  background:transparent;color:var(--sub);
  border:1px solid var(--line-strong);
  font-weight:500;
}
.btn-back:hover{border-color:var(--main);color:var(--main)}
.btn-back::before{content:"←";margin-right:4px}

.step-nav .btn-primary{margin-left:auto}
.step-nav .submit-help{
  font-size:12px;color:var(--sub);
  flex-basis:100%;text-align:center;margin-top:8px;line-height:1.7;
}

/* ================= Completion screen ================= */
.done-screen{
  padding:80px 0;text-align:center;
}
.done-screen .check{
  width:72px;height:72px;border-radius:50%;
  background:rgba(29,107,87,.12);color:var(--tel);
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 24px;
  animation:done-in .6s ease;
}
@keyframes done-in{
  from{transform:scale(.7);opacity:0}
  to{transform:none;opacity:1}
}
.done-screen .check svg{width:36px;height:36px;stroke-width:3}
.done-screen h1{
  font-family:var(--serif);font-size:clamp(24px,3vw,30px);
  color:var(--main);margin:0 0 16px;line-height:1.5;letter-spacing:.02em;
}
.done-screen p{
  color:var(--sub);font-size:15px;line-height:1.95;
  margin:0 auto 24px;max-width:520px;
}
.done-actions{
  display:flex;gap:12px;justify-content:center;flex-wrap:wrap;
  margin-top:16px;
}

/* ================= Footer ================= */
.site-footer{
  background:#0B1A2E;color:#AAB6C6;padding:36px 0 24px;
  border-top:1px solid rgba(255,255,255,.05);
  text-align:center;font-size:12px;line-height:1.9;
}
.site-footer a{color:#AAB6C6;text-decoration:underline}