:root {
  --bg: #f3f6fb;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #ffffff;
  --surface-soft: #f8fbff;
  --border: rgba(23, 37, 84, 0.12);
  --border-strong: rgba(37, 99, 235, 0.22);
  --ink: #10203a;
  --muted: #61708c;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: rgba(37, 99, 235, 0.08);
  --primary-light: rgba(37, 99, 235, 0.06);
  --success: #0f8b60;
  --success-soft: rgba(15, 139, 96, 0.1);
  --error: #d14343;
  --error-soft: rgba(209, 67, 67, 0.1);
  --warning: #d97706;
  --shadow-sm: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 22px 60px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 30px 90px rgba(15, 23, 42, 0.16);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.18), transparent 24%),
    radial-gradient(circle at 85% 10%, rgba(14, 165, 233, 0.18), transparent 18%),
    radial-gradient(circle at bottom right, rgba(15, 139, 96, 0.12), transparent 24%),
    linear-gradient(180deg, #eff4fb 0%, #f5f8fd 40%, #eef2f8 100%);
}

a,
button,
input,
select {
  font: inherit;
}

button,
input,
select {
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease, background-color 0.18s ease;
}

.app-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(255, 255, 255, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.55);
}

.app-bar__inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 14px 20px;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 28px;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(16, 32, 58, 0.06);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-copy {
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 20px 56px;
}

.card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(18px);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.45), rgba(255, 255, 255, 0));
  pointer-events: none;
}

.card {
  padding: 32px;
  margin-bottom: 24px;
}

.step-card {
  scroll-margin-top: 84px;
}

.section-index,
.info-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.is-hidden {
  display: none !important;
}

.section-heading h2,
.section-heading h3,
.downloads h3 {
  margin: 0;
  letter-spacing: -0.02em;
}

.section-heading p,
.info-card p,
.upload-zone span,
.downloads p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.metric-chip {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 500;
}

.metric-chip--muted {
  color: var(--muted);
}

.section-heading {
  position: relative;
  z-index: 1;
  margin-bottom: 24px;
}

.card-header {
  margin-bottom: 24px;
}

.card-title,
.section-heading h2,
.section-heading h3 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.card-desc,
.section-heading p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.5;
}

.section-heading--compact {
  margin-bottom: 14px;
}

.form-stack,
.status-panel,
.downloads {
  position: relative;
  z-index: 1;
}

.form-stack {
  display: grid;
  gap: 14px;
}

.form-row,
.info-row,
.metric-row {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric-row {
  display: flex;
  flex-wrap: wrap;
}

.field {
  display: grid;
  gap: 8px;
}

.field label,
.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}

.field-error {
  margin: 0;
  color: var(--error);
  font-size: 13px;
  line-height: 1.6;
}

input.input-error {
  border-color: rgba(209, 67, 67, 0.5);
  box-shadow: 0 0 0 4px rgba(209, 67, 67, 0.12);
}

input,
select {
  width: 100%;
  min-height: 52px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

input:focus,
select:focus,
.upload-zone:hover,
.upload-zone:focus-within {
  outline: none;
  border-color: var(--border-strong);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

#files {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
}

.upload-zone {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border: 1px dashed rgba(37, 99, 235, 0.4);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(14, 165, 233, 0.08)),
    var(--surface-strong);
  cursor: pointer;
}

.upload-zone.is-dragover {
  border-color: var(--primary);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(14, 165, 233, 0.08)),
    var(--surface-strong);
  transform: translateY(-1px);
}

.upload-zone strong {
  font-size: 17px;
  letter-spacing: -0.02em;
}

.upload-zone__eyebrow {
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.info-card,
.subcard {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow-sm);
}

.info-card {
  padding: 16px;
}

.info-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.info-card p {
  font-size: 14px;
}

.metric-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.metric-value {
  font-size: 24px;
  font-weight: 800;
}

.subcard {
  padding: 16px;
}

.validation-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.validation-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
}

.validation-list li::before {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 24px;
  block-size: 24px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  flex: 0 0 auto;
}

.validation-list li.ok {
  background: var(--success-soft);
  color: var(--success);
}

.validation-list li.ok::before {
  content: "OK";
  background: rgba(15, 139, 96, 0.16);
}

.validation-list li.ng {
  background: var(--error-soft);
  color: var(--error);
}

.validation-list li.ng::before {
  content: "!";
  background: rgba(209, 67, 67, 0.16);
}

#submit-button {
  width: 100%;
  min-height: 56px;
  padding: 16px 24px;
  border: none;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--primary), #1e40af);
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 18px 36px rgba(37, 99, 235, 0.26);
  cursor: pointer;
}

#submit-button:hover {
  background: linear-gradient(135deg, var(--primary-hover), #1d4ed8);
  transform: translateY(-1px);
  box-shadow: 0 24px 44px rgba(37, 99, 235, 0.28);
}

.status-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
}

.status.idle {
  background: #eef3fa;
  color: var(--muted);
}

.status.running {
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
}

.status.done {
  background: var(--success-soft);
  color: var(--success);
}

.status.error {
  background: var(--error-soft);
  color: var(--error);
}

.progress-overview {
  margin-top: 18px;
}

.progress-bar {
  inline-size: 100%;
  block-size: 8px;
  border-radius: 4px;
  background: var(--bg);
  overflow: hidden;
  border: none;
}

.progress-bar__fill {
  inline-size: 0;
  block-size: 100%;
  border-radius: 4px;
  background: linear-gradient(90deg, #2563eb, #22c55e);
  transition: width 0.35s ease;
}

.progress-caption {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.progress-steps {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.progress-steps li {
  position: relative;
  padding: 14px 16px 14px 46px;
  color: var(--muted);
  font-weight: 600;
}

.progress-steps li + li {
  border-top: 1px solid rgba(16, 32, 58, 0.08);
}

.progress-steps li::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 12px;
  inline-size: 12px;
  block-size: 12px;
  margin-top: -6px;
  border-radius: 50%;
  background: rgba(16, 32, 58, 0.14);
}

.progress-steps li.is-pending::before {
  background: rgba(16, 32, 58, 0.14);
}

.progress-steps li.is-active {
  color: var(--primary);
}

.progress-steps li.is-active::before {
  background: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.progress-steps li.is-done {
  color: var(--success);
}

.progress-steps li.is-done::before {
  background: var(--success);
}

.progress-steps li.is-error {
  color: var(--error);
}

.progress-steps li.is-error::before {
  background: var(--error);
}

.detail-card summary {
  cursor: pointer;
  font-weight: 700;
}

.detail-card {
  margin-top: 28px;
}

.detail-note {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.detail-output {
  margin: 14px 0 0;
  padding: 16px;
  min-height: 220px;
  border: 1px solid rgba(16, 32, 58, 0.08);
  border-radius: var(--radius-md);
  background: #f8fbff;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  line-height: 1.7;
}

.downloads {
  margin-top: 18px;
  gap: 10px;
}

.downloads h3 {
  font-size: 20px;
}

.download-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 56px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-md);
  background: #ffffff;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.download-link::before {
  content: "";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  inline-size: 20px;
  block-size: 20px;
  background-color: var(--primary);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 3v10'/%3E%3Cpath d='M6.5 9.5 10 13l3.5-3.5'/%3E%3Cpath d='M3 17h14'/%3E%3C/svg%3E") center / 20px 20px no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 3v10'/%3E%3Cpath d='M6.5 9.5 10 13l3.5-3.5'/%3E%3Cpath d='M3 17h14'/%3E%3C/svg%3E") center / 20px 20px no-repeat;
  flex: 0 0 auto;
}

.download-link:hover {
  border-color: var(--primary);
  border-left: 3px solid var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
  background: var(--primary-light);
}

.download-link:active {
  transform: scale(0.99);
  transition: transform 0.05s;
}

@media (max-width: 640px) {
  .container {
    padding: 20px 16px 60px;
  }

  .card {
    padding: 24px 20px;
    border-radius: var(--radius-lg);
  }

  .card-title {
    font-size: 18px;
  }

  .form-row,
  .info-row,
  .metric-row {
    grid-template-columns: 1fr;
  }

  .metric-row,
  .status-row,
  .brand-lockup {
    display: grid;
  }

  .download-link {
    padding: 18px 16px;
    min-height: 60px;
    font-size: 14px;
  }
}