:root {
  --bg: #fbf7f2;
  --surface: #ffffff;
  --ink: #2b2226;
  --muted: #7a6c70;
  --line: #eadfd8;
  --primary: #9b2c4f;
  --primary-ink: #ffffff;
  --primary-soft: #f7e4ea;
  --secondary: #2f7a5c;
  --accent: #c8912f;
  --danger: #c0392b;
  --radius: 14px;
  --shadow: 0 6px 24px rgba(80, 30, 45, 0.08);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Noto Sans JP", system-ui, sans-serif;
  line-height: 1.8;
  font-size: 16px;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
.hidden { display: none !important; }
.sp { display: none; }
@media (max-width: 600px) { .pc { display: none; } .sp { display: inline; } }

/* Header */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 8px; background: none; border: 0; font: inherit; font-family: "Noto Serif JP", serif; font-weight: 700; font-size: 17px; color: var(--primary); cursor: pointer; padding: 0; }
.brand-mark { font-size: 20px; }

main { padding-top: 32px; padding-bottom: 64px; }

/* Typography */
.eyebrow { color: var(--accent); font-weight: 700; letter-spacing: .12em; font-size: 13px; margin: 0 0 4px; }
.title { font-family: "Noto Serif JP", serif; font-size: clamp(24px, 5vw, 32px); margin: 0 0 12px; line-height: 1.4; }
.title-sm { font-family: "Noto Serif JP", serif; font-size: 22px; margin: 0; }
.lead { color: var(--muted); margin: 0 0 28px; }
.center { text-align: center; }

/* Card */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px; margin-bottom: 20px; }
.card-narrow { max-width: 480px; margin: 40px auto; }
@media (max-width: 600px) { .card { padding: 20px 16px; } }

/* Forms */
.login-form { text-align: left; display: grid; gap: 10px; }
.label { font-weight: 700; font-size: 14px; }
.input, textarea {
  width: 100%; font: inherit; color: var(--ink); background: #fff;
  border: 1.5px solid var(--line); border-radius: 10px; padding: 12px 14px;
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
textarea { min-height: 110px; resize: vertical; line-height: 1.7; }
.error { color: var(--danger); font-size: 14px; margin: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-weight: 700; border-radius: 999px; border: 1.5px solid transparent;
  padding: 12px 28px; cursor: pointer; text-decoration: none; transition: transform .1s, opacity .15s, background .15s;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 18px; }
.btn-block { width: 100%; margin-top: 8px; }
.btn-primary { background: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { opacity: .9; }
.btn-secondary { background: var(--secondary); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-ghost { background: var(--surface); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

/* Worksheet */
.sheet-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.step-label { margin: 0; color: var(--muted); font-size: 14px; font-weight: 500; }
.progress { height: 6px; background: var(--line); border-radius: 99px; overflow: hidden; margin-bottom: 20px; }
.progress-bar { height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); width: 33%; transition: width .3s; }
.part-head { border-bottom: 1px dashed var(--line); padding-bottom: 14px; margin-bottom: 20px; }
.part-title { font-family: "Noto Serif JP", serif; font-size: 20px; margin: 0; color: var(--primary); }
.part-sub { margin: 2px 0 0; color: var(--muted); font-size: 14px; }
.q { margin-bottom: 24px; }
.q:last-child { margin-bottom: 0; }
.q label { display: block; font-weight: 700; margin-bottom: 8px; line-height: 1.6; }
.nav-buttons { display: flex; justify-content: space-between; gap: 12px; }
.hint { text-align: center; color: var(--muted); font-size: 13px; margin-top: 16px; }

/* Result */
.result-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; }
.result-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.doc-head { display: flex; align-items: center; gap: 14px; padding-bottom: 16px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.doc-icon { width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; font-size: 22px; flex: none; }
.doc-title { font-family: "Noto Serif JP", serif; font-weight: 700; font-size: 19px; margin: 0; }
.doc-sub { margin: 0; color: var(--muted); font-size: 12px; letter-spacing: .05em; }
.status { display: flex; align-items: center; gap: 10px; color: var(--muted); background: var(--primary-soft); padding: 12px 16px; border-radius: 10px; margin-bottom: 16px; font-size: 14px; }
.spinner { width: 16px; height: 16px; border: 2px solid var(--primary); border-right-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }

.doc-body h2 { font-family: "Noto Serif JP", serif; font-size: 21px; margin: 36px 0 14px; padding: 8px 14px; background: var(--primary-soft); border-left: 5px solid var(--primary); border-radius: 4px; line-height: 1.5; }
.doc-body h2:first-child { margin-top: 0; }
.doc-body h3 { font-size: 17px; margin: 24px 0 8px; color: var(--primary); }
.doc-body p, .doc-body li { margin: 6px 0; }
.doc-body ul, .doc-body ol { padding-left: 1.4em; }
.doc-body strong { color: #5a1a2e; }
.doc-body .table-wrap { overflow-x: auto; margin: 12px 0; }
.doc-body table { border-collapse: collapse; width: 100%; min-width: 620px; font-size: 14px; }
.doc-body th, .doc-body td { border: 1px solid var(--line); padding: 10px; vertical-align: top; text-align: left; }
.doc-body th { background: var(--primary); color: #fff; }
.doc-body tr td:first-child { background: #faf3f0; font-weight: 700; white-space: nowrap; }
.note { color: var(--muted); font-size: 12px; margin: 24px 0 0; }

.cta { background: linear-gradient(135deg, #fff, var(--primary-soft)); }
.cta-lead { font-family: "Noto Serif JP", serif; font-weight: 700; font-size: 19px; margin: 0 0 16px; }
.save-note p { margin: 4px 0; font-size: 14px; }
.inputs summary { cursor: pointer; font-weight: 700; }
.inputs .result-actions { margin: 14px 0; }
.input-text { white-space: pre-wrap; word-break: break-word; font-family: inherit; font-size: 14px; background: var(--bg); padding: 16px; border-radius: 10px; margin: 0; }

.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px); background: var(--ink); color: #fff; padding: 10px 20px; border-radius: 999px; font-size: 14px; opacity: 0; pointer-events: none; transition: all .25s; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.remaining { text-align: center; font-weight: 700; color: var(--primary); font-size: 14px; margin: 16px 0 0; }
.remaining:empty { display: none; }
.remaining-right { text-align: right; margin: -4px 0 12px; }