:root {
  --task-green: #30c77d;
  --task-green-dark: #148e58;
  --task-ink: #17221d;
  --task-muted: #5f7069;
  --task-border: #dbe7e2;
  --task-soft: #eef8f4;
  --task-surface: #ffffff;
  --task-warm: #fff7ee;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--task-ink);
  background: #fbfdfc;
  font-family: "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.8;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.task-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(219, 231, 226, 0.9);
  background: rgba(251, 253, 252, 0.92);
  backdrop-filter: blur(16px);
}

.task-logo {
  display: inline-flex;
}

.task-logo img {
  display: block;
  height: 35px;
  width: auto;
}

.task-header-cta,
.task-tester-button,
.task-generate-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 999px;
  border: 0;
  background: var(--task-green);
  color: #fff;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(48, 199, 125, 0.22);
}

.task-header-cta {
  min-height: 42px;
  padding: 0 16px;
  font-size: 14px;
}

.task-hero,
.task-workspace,
.task-why,
.task-tester {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.task-hero {
  display: grid;
  gap: 28px;
  padding: 42px 0 30px;
}

.task-eyebrow {
  margin: 0 0 10px;
  color: var(--task-green-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.task-ad-copy {
  display: inline-flex;
  margin: 0 0 16px;
  padding: 8px 12px;
  border: 1px solid var(--task-border);
  border-radius: 999px;
  background: #fff;
  color: var(--task-green-dark);
  font-size: 14px;
  font-weight: 700;
}

.task-hero h1,
.task-panel h2,
.task-why h2,
.task-tester h2 {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0;
}

.task-hero h1 {
  font-size: clamp(38px, 12vw, 72px);
  line-height: 1.08;
}

.task-lead {
  margin: 20px 0 0;
  color: var(--task-muted);
  font-size: 19px;
  line-height: 1.9;
}

.task-sublead {
  margin: 14px 0 0;
  color: var(--task-muted);
  font-size: 16px;
  line-height: 1.8;
}

.task-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--task-border);
  border-radius: 8px;
  background: var(--task-soft);
  color: #486059;
  font-size: 14px;
}

.task-preview {
  display: flex;
  justify-content: center;
}

.task-phone {
  width: min(100%, 330px);
  padding: 20px;
  border: 1px solid var(--task-border);
  border-radius: 32px;
  background: linear-gradient(160deg, #ffffff, #edf8f3);
  box-shadow: 0 24px 70px rgba(31, 77, 57, 0.14);
}

.task-phone-top {
  width: 72px;
  height: 6px;
  margin: 0 auto 24px;
  border-radius: 999px;
  background: #d4ded9;
}

.task-phone-title {
  margin-bottom: 14px;
  font-size: 22px;
  font-weight: 700;
}

.task-phone-item {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 12px;
  align-items: center;
  margin-top: 10px;
  padding: 14px;
  border: 1px solid var(--task-border);
  border-radius: 8px;
  background: #fff;
}

.task-phone-item span {
  color: var(--task-green-dark);
  font-weight: 700;
}

.task-phone-item strong {
  font-size: 15px;
}

.task-phone-item.is-active {
  background: var(--task-ink);
  color: #fff;
}

.task-phone-item.is-active span {
  color: #8cf0ba;
}

.task-workspace {
  display: grid;
  gap: 18px;
  padding: 16px 0 42px;
}

.task-panel {
  padding: 22px;
  border: 1px solid var(--task-border);
  border-radius: 8px;
  background: var(--task-surface);
  box-shadow: 0 16px 44px rgba(30, 74, 54, 0.08);
}

.task-panel-head {
  margin-bottom: 22px;
}

.task-step-label {
  margin: 0 0 6px;
  color: var(--task-green-dark);
  font-size: 12px;
  font-weight: 700;
}

.task-panel h2,
.task-why h2,
.task-tester h2 {
  font-size: clamp(26px, 7vw, 40px);
  line-height: 1.25;
}

.task-panel-head p:not(.task-step-label),
.task-why > p:not(.task-eyebrow),
.task-tester p {
  color: var(--task-muted);
  font-size: 16px;
}

.task-form {
  display: grid;
  gap: 18px;
}

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

.task-field span,
.task-choice-group legend {
  color: var(--task-ink);
  font-weight: 700;
}

.task-field input,
.task-field textarea {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  border: 1px solid var(--task-border);
  border-radius: 8px;
  background: #fbfdfc;
  color: var(--task-ink);
  font-size: 16px;
}

.task-field textarea {
  resize: vertical;
}

.task-choice-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  border: 0;
}

.task-choice-group-full {
  grid-column: 1 / -1;
}

.task-choice-group legend {
  grid-column: 1 / -1;
  margin-bottom: 2px;
}

.task-choice-group label {
  display: flex;
  align-items: center;
  min-height: 50px;
  padding: 10px 12px;
  border: 1px solid var(--task-border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
}

.task-choice-group input {
  width: 18px;
  height: 18px;
  margin: 0 8px 0 0;
  accent-color: var(--task-green);
}

.task-generate-button {
  width: 100%;
  margin-top: 4px;
  padding: 0 20px;
  font-size: 17px;
}

.task-result-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.task-result-list li {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px;
  border: 1px solid var(--task-border);
  border-radius: 8px;
  background: #fbfdfc;
}

.task-result-list time {
  color: var(--task-green-dark);
  font-weight: 700;
}

.task-result-list strong {
  display: block;
  margin-bottom: 2px;
  font-size: 17px;
}

.task-result-list p {
  margin: 0;
  color: var(--task-muted);
  font-size: 14px;
  line-height: 1.7;
}

.task-result-list .task-empty {
  display: block;
  color: var(--task-muted);
}

.task-actions {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.task-secondary-button {
  min-height: 48px;
  border: 1px solid var(--task-border);
  border-radius: 999px;
  background: #fff;
  color: var(--task-ink);
  font-weight: 700;
  cursor: pointer;
}

.task-secondary-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.task-why {
  padding: 42px 0;
}

.task-why h2 {
  margin-bottom: 22px;
}

.task-why-grid {
  display: grid;
  gap: 14px;
}

.task-why-grid article {
  padding: 20px;
  border: 1px solid var(--task-border);
  border-radius: 8px;
  background: var(--task-surface);
}

.task-why-grid span {
  color: var(--task-green-dark);
  font-weight: 700;
}

.task-why-grid h3 {
  margin: 8px 0;
  font-size: 20px;
}

.task-why-grid p {
  margin: 0;
  color: var(--task-muted);
}

.task-tester {
  display: grid;
  gap: 22px;
  margin-bottom: 54px;
  padding: 24px;
  border-radius: 8px;
  background: var(--task-ink);
  color: #fff;
}

.task-tester .task-eyebrow {
  color: #8cf0ba;
}

.task-tester p {
  color: #dce9e4;
}

.task-tester-button {
  width: 100%;
  min-height: 56px;
  padding: 0 20px;
  color: #fff;
}

.task-footer {
  padding: 36px 20px;
  background: #171717;
  color: #fff;
  text-align: center;
}

.task-footer-logo {
  margin-bottom: 18px;
  font-size: 28px;
  font-weight: 700;
  color: var(--task-green);
}

.task-footer-logo span {
  color: #fff;
  font-size: 15px;
}

.task-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  justify-content: center;
  margin-bottom: 18px;
}

.task-footer a {
  color: #fff;
  text-decoration: none;
  opacity: 0.86;
}

.task-footer p {
  margin: 0;
  color: #b7b7b7;
  font-size: 13px;
}

@media (min-width: 760px) {
  .task-header {
    padding: 16px 32px;
  }

  .task-hero {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    padding: 72px 0 46px;
  }

  .task-workspace {
    grid-template-columns: 0.92fr 1.08fr;
    align-items: start;
    gap: 22px;
  }

  .task-panel {
    padding: 28px;
  }

  .task-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .task-field-full,
  .task-choice-group,
  .task-generate-button {
    grid-column: 1 / -1;
  }

  .task-choice-group {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .task-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .task-why-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .task-tester {
    grid-template-columns: 1fr 280px;
    align-items: center;
    padding: 34px;
  }
}

@media (max-width: 420px) {
  .task-header-cta {
    padding: 0 12px;
    font-size: 13px;
  }

  .task-choice-group {
    grid-template-columns: 1fr;
  }

  .task-result-list li {
    grid-template-columns: 1fr;
  }
}