:root {
  color-scheme: light;
  --ink: #1f2a2e;
  --muted: #5e6c70;
  --line: #d8e1dd;
  --paper: #fbfcf9;
  --band: #eef5f1;
  --card: #ffffff;
  --accent: #0d6b5f;
  --accent-dark: #084b43;
  --warm: #c66b2d;
  --soft-blue: #dce8ee;
  --soft-rose: #eee2de;
  --soft-gold: #eee6cf;
  --shadow: 0 18px 45px rgba(31, 42, 46, 0.12);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.7;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  background: rgba(251, 252, 249, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand {
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0;
}

nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

nav a,
.site-footer a {
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  min-height: calc(100svh - 72px);
  padding: clamp(44px, 7vw, 92px) clamp(18px, 7vw, 96px);
  background:
    linear-gradient(115deg, rgba(238, 245, 241, 0.96), rgba(251, 252, 249, 0.82)),
    url("https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=1800&q=80") center/cover;
}

.hero-copy {
  max-width: 760px;
}

.label {
  margin: 0 0 10px;
  color: var(--warm);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 22px;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(27px, 3.4vw, 44px);
  line-height: 1.18;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: 0;
}

.lead {
  max-width: 660px;
  margin-bottom: 30px;
  color: #37464a;
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: white;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.78);
  color: var(--accent-dark);
}

.button.large {
  min-height: 56px;
  padding-inline: 28px;
}

.hero-panel,
.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 26px;
}

.hero-panel p {
  margin-bottom: 12px;
  font-weight: 800;
}

.hero-panel ul,
.card ul {
  margin: 0;
  padding-left: 20px;
}

.section {
  padding: clamp(54px, 8vw, 96px) clamp(18px, 7vw, 96px);
}

.band {
  background: var(--band);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.grid {
  display: grid;
  gap: 18px;
}

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

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

.card {
  padding: 24px;
}

.card.muted {
  box-shadow: none;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
}

.checklist {
  display: grid;
  gap: 12px;
}

.checklist label {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.checklist input {
  margin-top: 7px;
  accent-color: var(--accent);
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.steps article {
  padding: 4px 6px;
}

.steps span {
  display: inline-grid;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  place-items: center;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-weight: 800;
}

.cta-section {
  background: var(--accent-dark);
  color: white;
}

.cta-copy {
  max-width: 780px;
}

.cta-section .label {
  color: #f0b17a;
}

.cta-section .button.primary {
  margin-top: 10px;
  background: white;
  color: var(--accent-dark);
  border-color: white;
}

.note {
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 13px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(18px, 4vw, 56px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer p {
  margin: 0;
}

.site-footer div {
  display: flex;
  gap: 16px;
}

.legal {
  max-width: 820px;
  min-height: 70svh;
  padding: clamp(44px, 7vw, 92px) clamp(18px, 7vw, 96px);
}

.article-meta {
  margin: 5px 0 0;
  color: var(--warm);
  font-size: 13px;
  font-weight: 800;
}

.blog-masthead {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(54px, 8vw, 92px) clamp(18px, 5vw, 48px) clamp(30px, 5vw, 54px);
}

.blog-masthead h1 {
  max-width: 840px;
  margin-bottom: 18px;
  font-size: clamp(38px, 5.4vw, 64px);
}

.blog-masthead p:last-child {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 18px;
}

.blog-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: clamp(32px, 5vw, 56px);
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 clamp(18px, 5vw, 48px) clamp(64px, 8vw, 96px);
}

.content-column {
  display: grid;
  gap: 24px;
}

.featured-post {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(0, 1.1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
}

.post-copy {
  padding: clamp(24px, 4vw, 40px);
}

.post-copy h2 {
  margin-bottom: 12px;
  font-size: clamp(28px, 3.4vw, 42px);
}

.post-copy p:not(.article-meta) {
  color: var(--muted);
}

.read-more {
  display: inline-block;
  margin-top: 6px;
  color: var(--accent);
  font-weight: 800;
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.post-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
}

.post-card .article-meta,
.post-card h3,
.post-card p:last-child {
  margin-right: 20px;
  margin-left: 20px;
}

.post-card .article-meta {
  margin-top: 18px;
}

.post-card h3 {
  font-size: 21px;
}

.post-card p:last-child {
  margin-bottom: 22px;
  color: var(--muted);
}

.post-image {
  min-height: 190px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(31, 42, 46, 0.08)),
    var(--soft-blue);
}

.featured-post .post-image {
  min-height: 100%;
}

.post-image.work {
  background:
    linear-gradient(135deg, rgba(8, 75, 67, 0.18), rgba(198, 107, 45, 0.1)),
    url("https://images.unsplash.com/photo-1497366811353-6870744d04b2?auto=format&fit=crop&w=1100&q=78") center/cover;
}

.post-image.room {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.15), rgba(31, 42, 46, 0.08)),
    url("https://images.unsplash.com/photo-1519710164239-da123dc03ef4?auto=format&fit=crop&w=900&q=78") center/cover;
}

.post-image.learning {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(31, 42, 46, 0.08)),
    url("https://images.unsplash.com/photo-1456513080510-7bf3a84b82f8?auto=format&fit=crop&w=900&q=78") center/cover;
}

.post-image.money {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(31, 42, 46, 0.08)),
    var(--soft-gold);
}

.post-image.travel {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(31, 42, 46, 0.08)),
    url("https://images.unsplash.com/photo-1500530855697-b586d89ba3ee?auto=format&fit=crop&w=900&q=78") center/cover;
}

.post-image.desk {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(31, 42, 46, 0.08)),
    url("https://images.unsplash.com/photo-1497215728101-856f4ea42174?auto=format&fit=crop&w=900&q=78") center/cover;
}

.post-image.notebook {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(31, 42, 46, 0.08)),
    var(--soft-rose);
}

.blog-sidebar {
  display: grid;
  align-content: start;
  gap: 18px;
}

.sidebar-block {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.76);
}

.sidebar-block h2 {
  margin-bottom: 12px;
  font-size: 20px;
}

.sidebar-block p {
  margin-bottom: 0;
  color: var(--muted);
}

.category-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.category-list a {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

.popular-list {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}

.popular-list li + li {
  margin-top: 10px;
}

.lp-body {
  background: #f4f5f7;
}

.lp-header {
  max-width: 900px;
  margin: 0 auto;
  padding: 18px clamp(16px, 4vw, 28px);
}

.lp-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 28px) 42px;
}

.lp-article {
  padding: clamp(22px, 4vw, 44px);
  border: 1px solid #e2e5e9;
  border-radius: 8px;
  background: #fff;
}

.pr-label {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 8px;
  border: 1px solid #d4d8de;
  border-radius: 4px;
  color: #68727c;
  font-size: 12px;
  font-weight: 800;
}

.lp-article h1 {
  margin-bottom: 18px;
  font-size: clamp(31px, 5vw, 50px);
  line-height: 1.18;
}

.lp-lead {
  margin-bottom: 26px;
  color: #3f4a53;
  font-size: 18px;
}

.lp-eyecatch {
  margin: 0 0 26px;
}

.lp-eyecatch img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 6px;
  object-fit: cover;
}

.notice-box,
.marker-box {
  margin: 24px 0;
  padding: 18px 20px;
  border-radius: 6px;
}

.notice-box {
  border: 1px solid #dbe4ea;
  background: #f4f8fb;
}

.notice-box p,
.marker-box p {
  margin-bottom: 0;
}

.toc {
  margin: 28px 0 34px;
  padding: 22px;
  border: 1px solid #e0e3e7;
  border-radius: 6px;
  background: #fafafa;
}

.toc p {
  margin-bottom: 10px;
  font-weight: 800;
}

.toc ol {
  margin: 0;
  padding-left: 22px;
}

.toc a {
  color: var(--accent);
  text-decoration: none;
}

.lp-section {
  padding: 32px 0;
  border-top: 1px solid #e6e8eb;
}

.lp-section h2 {
  font-size: clamp(25px, 3.2vw, 34px);
}

.lp-section h3 {
  margin-top: 22px;
  font-size: 21px;
}

.marker-box {
  border-left: 5px solid var(--warm);
  background: #fff7ef;
}

.problem-list {
  display: grid;
  gap: 14px;
}

.problem-list article {
  padding: 18px;
  border: 1px solid #e0e4e8;
  border-radius: 6px;
  background: #fbfcfd;
}

.problem-list span {
  display: inline-grid;
  width: 30px;
  height: 30px;
  margin-bottom: 10px;
  place-items: center;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}

.lp-cta {
  margin: 28px 0;
  padding: clamp(24px, 4vw, 38px);
  border-radius: 8px;
  background: #0f5f56;
  color: #fff;
  text-align: center;
}

.lp-cta h2 {
  max-width: 640px;
  margin-right: auto;
  margin-left: auto;
  font-size: clamp(25px, 3.4vw, 36px);
}

.lp-cta p {
  max-width: 640px;
  margin-right: auto;
  margin-left: auto;
}

.lp-cta .button.primary {
  margin-top: 8px;
  border-color: #fff;
  background: #fff;
  color: #0f5f56;
}

.cta-kicker {
  color: #f0c08e;
  font-weight: 800;
}

.lp-cta.bottom {
  margin-bottom: 0;
}

.check-list {
  display: grid;
  gap: 10px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
}

.check-list li::before {
  position: absolute;
  left: 0;
  color: var(--accent);
  content: "✓";
  font-weight: 800;
}

.legal h1 {
  font-size: clamp(32px, 5vw, 52px);
}

.legal h2 {
  margin-top: 34px;
  font-size: 24px;
}

.info-list {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px 18px;
}

.info-list dt {
  color: var(--muted);
  font-weight: 800;
}

.info-list dd {
  margin: 0;
}

@media (max-width: 860px) {
  .hero,
  .split,
  .blog-shell,
  .featured-post,
  .grid.three,
  .grid.two,
  .steps,
  .post-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .featured-post .post-image {
    min-height: 260px;
  }

  .lp-article {
    padding: 20px;
  }
}

@media (max-width: 520px) {
  nav {
    width: 100%;
    justify-content: space-between;
  }

  h1 {
    font-size: 36px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .info-list {
    grid-template-columns: 1fr;
  }
}