:root {
  --ink: #102033;
  --muted: #5c6d82;
  --line: #d8e4f0;
  --paper: #f5f9ff;
  --panel: #ffffff;
  --navy: #123b68;
  --blue: #1e6fb8;
  --sky: #75b7e8;
  --ice: #e8f4ff;
  --cyan: #18a8c7;
  --amber: #d9902f;
  --danger: #a84d4d;
  --white: #ffffff;
  --shadow: 0 22px 54px rgba(18, 59, 104, .13);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(117, 183, 232, .35), rgba(117, 183, 232, 0) 32%),
    linear-gradient(180deg, #f5f9ff 0%, #eef6ff 48%, #f8fbff 100%);
  line-height: 1.75;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(216, 228, 240, .9);
  background: rgba(245, 249, 255, .92);
  backdrop-filter: blur(16px);
}

.nav {
  width: min(1180px, calc(100% - 32px));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 220px;
  font-weight: 900;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--white);
  background:
    radial-gradient(circle at 30% 25%, #84d9ff, rgba(132, 217, 255, 0) 34%),
    linear-gradient(135deg, var(--navy), var(--blue));
  font-size: 18px;
  box-shadow: 0 8px 20px rgba(30, 111, 184, .28);
}

.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--blue);
}

.header-cta {
  border: 1px solid rgba(30, 111, 184, .45);
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--blue);
  font-weight: 900;
  background: rgba(255, 255, 255, .55);
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 680px;
  display: grid;
  align-items: center;
  background:
    linear-gradient(135deg, #09233f 0%, #123b68 48%, #1e6fb8 100%);
  color: var(--white);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 74% 20%, rgba(117, 183, 232, .45), rgba(117, 183, 232, 0) 28%),
    radial-gradient(circle at 18% 76%, rgba(24, 168, 199, .28), rgba(24, 168, 199, 0) 32%),
    linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: auto, auto, 88px 88px, 88px 88px;
  opacity: .9;
}

.hero::after {
  content: "ROUTE";
  position: absolute;
  right: -80px;
  bottom: -50px;
  color: rgba(255,255,255,.08);
  font-size: clamp(120px, 20vw, 260px);
  font-weight: 900;
  line-height: .8;
}

.hero-inner,
.section,
.compare-wrap,
.footer-inner {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(310px, .76fr);
  gap: clamp(28px, 6vw, 76px);
  align-items: center;
  padding: 92px 0 76px;
}

.hero-copy {
  display: grid;
  gap: 20px;
}

.notice {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  max-width: 100%;
  border: 1px solid rgba(255, 255, 255, .36);
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(255, 255, 255, .12);
  font-size: 13px;
  font-weight: 900;
}

.notice-dot {
  width: 8px;
  height: 8px;
  border-radius: 99px;
  background: #84d9ff;
  flex: 0 0 auto;
}

h1 {
  max-width: 880px;
  margin: 0;
  font-size: clamp(38px, 6vw, 78px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero p {
  max-width: 760px;
  margin: 0;
  font-size: 18px;
  color: rgba(255, 255, 255, .9);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 900;
  border: 1px solid transparent;
}

.button.primary {
  color: #082038;
  background: #9ad9ff;
  box-shadow: 0 12px 26px rgba(154, 217, 255, .26);
}

.button.secondary {
  color: var(--white);
  border-color: rgba(255, 255, 255, .48);
  background: rgba(255, 255, 255, .08);
}

.route-panel {
  position: relative;
  min-height: 390px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 16px;
  background: rgba(255,255,255,.1);
  box-shadow: 0 24px 60px rgba(0,0,0,.2);
  backdrop-filter: blur(12px);
  padding: 22px;
  display: grid;
  align-content: space-between;
  overflow: hidden;
}

.route-panel::before {
  content: "";
  position: absolute;
  inset: 22px;
  border: 1px dashed rgba(255,255,255,.34);
  border-radius: 12px;
}

.route-step {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: start;
}

.route-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: #9ad9ff;
  color: #082038;
  font-weight: 900;
}

.route-step b {
  display: block;
  font-size: 18px;
}

.route-step span {
  display: block;
  margin-top: 2px;
  color: rgba(255,255,255,.78);
  font-size: 13px;
}

.section {
  padding: 68px 0;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 26px;
}

.section-kicker {
  margin: 0 0 6px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

h2 {
  margin: 0;
  font-size: clamp(27px, 3vw, 40px);
  line-height: 1.25;
}

.section-lead {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.disclaimer {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

.disclaimer .section {
  padding: 28px 0;
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 22px;
  align-items: start;
}

.disclaimer strong {
  color: var(--blue);
}

.disclaimer p {
  margin: 0;
  color: #4d6176;
  font-size: 14px;
}

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

.guide-card,
.article-card,
.note-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: 0 12px 30px rgba(18, 59, 104, .07);
}

.guide-card {
  overflow: hidden;
  min-height: 248px;
}

.guide-card img {
  width: 100%;
  height: 136px;
  object-fit: cover;
}

.guide-card-body,
.article-card,
.note-card {
  padding: 18px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 25px;
  border-radius: 999px;
  padding: 2px 10px;
  color: var(--navy);
  background: var(--ice);
  font-size: 12px;
  font-weight: 900;
}

h3 {
  margin: 10px 0 6px;
  font-size: 19px;
  line-height: 1.35;
}

.guide-card p,
.article-card p,
.note-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.compare-band {
  background:
    linear-gradient(135deg, #e8f4ff 0%, #f7fbff 100%);
}

.compare-wrap {
  padding: 68px 0;
  display: grid;
  grid-template-columns: .9fr 1.2fr;
  gap: 34px;
  align-items: start;
}

.check-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.check-list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  color: #344d66;
}

.check-icon {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--blue);
  font-weight: 900;
  line-height: 1;
}

.table-shell {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: #f2f8ff;
  color: #24486a;
  font-size: 13px;
  white-space: nowrap;
}

tr:last-child td {
  border-bottom: 0;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 28px;
  border-radius: 999px;
  padding: 4px 10px;
  color: #0d5470;
  background: #e1f7ff;
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.status-pill::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  flex: 0 0 auto;
}

.feature {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: 20px;
}

.feature-main {
  position: relative;
  min-height: 420px;
  border-radius: 18px;
  overflow: hidden;
  display: grid;
  align-items: end;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(9, 35, 63, .92), rgba(30, 111, 184, .72)),
    url("https://images.unsplash.com/photo-1519389950473-47ba0277781c?auto=format&fit=crop&w=1500&q=80") center / cover;
}

.feature-main::before {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 14px;
}

.feature-body {
  position: relative;
  z-index: 1;
  padding: 34px;
}

.feature-main h3 {
  max-width: 620px;
  margin: 12px 0 8px;
  font-size: clamp(26px, 3vw, 38px);
}

.feature-main p {
  max-width: 650px;
  color: rgba(255, 255, 255, .88);
}

.side-notes {
  display: grid;
  gap: 16px;
}

.article-card {
  min-height: 188px;
  display: grid;
  align-content: start;
  transition: transform .18s ease, border-color .18s ease;
}

.article-card:hover {
  border-color: rgba(30, 111, 184, .55);
  transform: translateY(-2px);
}

.article-meta {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
}

.tip-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.tip-card {
  min-height: 168px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, #ffffff, #f7fbff);
  padding: 18px;
  box-shadow: 0 12px 28px rgba(18, 59, 104, .07);
  display: grid;
  align-content: space-between;
  gap: 16px;
}

.tip-card strong {
  display: block;
  font-size: 22px;
  line-height: 1.35;
}

.tip-card span {
  color: var(--muted);
  font-size: 13px;
}

.video-slot {
  margin-top: 12px;
  min-height: 96px;
  border: 1px dashed rgba(30, 111, 184, .38);
  border-radius: 14px;
  background:
    linear-gradient(135deg, rgba(117, 183, 232, .18), rgba(255,255,255,.65));
  display: grid;
  place-items: center;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.newsletter {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto 64px;
  border-radius: 18px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--navy);
  color: var(--white);
  box-shadow: var(--shadow);
}

.newsletter-text,
.newsletter-form {
  padding: 42px;
}

.newsletter-text h2 {
  font-size: clamp(25px, 3vw, 36px);
}

.newsletter-text p,
.form-note {
  color: rgba(255, 255, 255, .76);
}

.newsletter-text p {
  margin: 14px 0 0;
}

.newsletter-form {
  display: grid;
  gap: 12px;
  align-content: center;
  background: #0f3158;
}

.input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

input {
  min-height: 48px;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 999px;
  padding: 0 16px;
  color: var(--white);
  background: rgba(255, 255, 255, .08);
  font: inherit;
}

input::placeholder {
  color: rgba(255, 255, 255, .55);
}

.form-note {
  margin: 0;
  font-size: 12px;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 30px 0;
  color: var(--muted);
  background: rgba(255,255,255,.52);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-hero {
  background:
    radial-gradient(circle at 82% 20%, rgba(117, 183, 232, .38), rgba(117, 183, 232, 0) 28%),
    linear-gradient(135deg, #09233f, #123b68 58%, #1e6fb8);
  color: var(--white);
  padding: 82px 0 56px;
}

.page-hero-inner,
.article-layout {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
}

.page-hero h1 {
  margin-bottom: 12px;
}

.page-hero p {
  max-width: 760px;
  color: rgba(255, 255, 255, .82);
  font-size: 17px;
}

.article-layout {
  padding: 48px 0 68px;
}

.article-layout h2 {
  margin-top: 38px;
  margin-bottom: 12px;
}

.article-layout p,
.article-layout li {
  color: #384c61;
  font-size: 16px;
}

.article-layout a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.callout {
  margin: 32px 0;
  padding: 20px;
  border-left: 5px solid var(--blue);
  border-radius: 0 14px 14px 0;
  background: #eaf6ff;
}

.one-point {
  margin: 28px 0;
  padding: 26px;
  border-radius: 18px;
  background: #ffffff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.one-point b {
  display: block;
  color: var(--blue);
  font-size: 13px;
  margin-bottom: 8px;
}

.one-point p {
  margin: 0;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.35;
  color: var(--ink);
  font-weight: 900;
}

@media (max-width: 920px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .route-panel {
    min-height: 320px;
  }
}

@media (max-width: 860px) {
  .nav {
    min-height: auto;
    padding: 12px 0;
    align-items: start;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 640px;
  }

  .hero-inner {
    padding: 68px 0 58px;
  }

  .section-head,
  .footer-inner {
    display: block;
  }

  .section-lead {
    margin-top: 12px;
  }

  .disclaimer .section,
  .compare-wrap,
  .feature,
  .newsletter {
    grid-template-columns: 1fr;
  }

  .guide-grid,
  .article-grid,
  .tip-strip {
    grid-template-columns: 1fr;
  }

  .feature-main {
    min-height: 380px;
  }

  .newsletter-text,
  .newsletter-form {
    padding: 28px;
  }
}

@media (max-width: 520px) {
  .brand {
    min-width: 0;
    font-size: 14px;
  }

  h1 {
    font-size: 38px;
  }

  .hero p {
    font-size: 16px;
  }

  .notice {
    align-items: flex-start;
    border-radius: 12px;
  }

  .hero-actions,
  .input-row {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .section,
  .compare-wrap {
    padding: 46px 0;
  }
}