:root {
  --ink: #15323b;
  --ink-strong: #0b2530;
  --forest: #386f57;
  --sky: #e8f6ff;
  --sky-strong: #bfe6f7;
  --gold: #c7a04a;
  --gold-soft: #f5e6b6;
  --coral: #d86f56;
  --cream: #faf8f1;
  --white: #ffffff;
  --line: #dce5e2;
  --muted: #667678;
  --shadow: 0 22px 70px rgba(12, 49, 66, 0.13);
  --radius: 8px;
  --container: 1180px;
  --container-pad: clamp(20px, 5vw, 48px);
  --section-y: clamp(72px, 10vw, 124px);
  --font-ja: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --font-en: "Inter", var(--font-ja);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  font-family: var(--font-ja);
  color: var(--ink);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

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

.container {
  width: min(100%, var(--container));
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  background: rgba(9, 34, 44, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(18px);
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.site-header.scrolled {
  background: rgba(9, 34, 44, 0.95);
  box-shadow: 0 12px 34px rgba(5, 22, 29, 0.18);
}

.header-inner {
  width: min(100%, var(--container));
  height: 72px;
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  line-height: 1;
  color: var(--white);
}

.brand-main {
  font-family: var(--font-en);
  font-size: 1.85rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-plus {
  color: var(--gold-soft);
}

.brand-sub {
  margin-top: 5px;
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  position: relative;
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.82);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  background: var(--gold-soft);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s var(--ease);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-link-cta {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 18px;
  color: var(--ink-strong);
  background: var(--gold-soft);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
}

.nav-link-cta::after {
  display: none;
}

.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 5px 0;
  background: var(--white);
  transition: transform 0.25s var(--ease), opacity 0.25s var(--ease);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 92svh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  background: var(--ink-strong);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 31, 39, 0.86), rgba(8, 31, 39, 0.44) 48%, rgba(8, 31, 39, 0.18)),
    linear-gradient(180deg, rgba(8, 31, 39, 0.2), rgba(8, 31, 39, 0.72));
}

.hero-content {
  position: relative;
  width: min(100%, var(--container));
  margin: 0 auto;
  padding: 120px var(--container-pad) 86px;
}

.eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.hero-eyebrow {
  color: var(--gold-soft);
}

.hero-title {
  margin: 0 0 18px;
  font-family: var(--font-en);
  font-size: clamp(4.7rem, 13vw, 9.5rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-title span {
  color: var(--gold-soft);
}

.hero-copy {
  width: min(100%, 660px);
  margin: 0 0 30px;
  font-size: clamp(1rem, 2.1vw, 1.22rem);
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
}

.button svg {
  width: 19px;
  height: 19px;
  margin-left: 8px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--ink-strong);
  background: var(--gold-soft);
  box-shadow: 0 16px 40px rgba(199, 160, 74, 0.22);
}

.button-secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.08);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 13px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  font-weight: 700;
}

.section {
  padding: var(--section-y) 0;
}

.two-column,
.price-header,
.style-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(30px, 6vw, 76px);
  align-items: start;
}

.section-title {
  margin: 0;
  font-size: clamp(1.85rem, 4vw, 3rem);
  line-height: 1.35;
  letter-spacing: 0;
  color: var(--ink-strong);
}

.section-lead,
.section-subtitle {
  margin: 0;
  color: var(--muted);
  font-weight: 500;
}

.centered {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-subtitle.centered {
  width: min(100%, 660px);
  margin-top: 16px;
}

.intro {
  background: linear-gradient(180deg, var(--sky) 0%, var(--white) 100%);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: clamp(34px, 5vw, 58px);
}

.feature-card,
.tutor-card,
.price-card,
.style-point {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 8px 34px rgba(12, 49, 66, 0.06);
}

.feature-card {
  padding: 28px;
}

.feature-number {
  display: block;
  margin-bottom: 18px;
  font-family: var(--font-en);
  font-size: 0.86rem;
  font-weight: 800;
  color: var(--coral);
}

.feature-card h3,
.tutor-body h3,
.price-card h3 {
  margin: 0;
  color: var(--ink-strong);
}

.feature-card h3 {
  font-size: 1.16rem;
  line-height: 1.55;
}

.feature-card p,
.tutor-body p,
.price-card p,
.style-point p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.concerns {
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(21, 50, 59, 0.97), rgba(56, 111, 87, 0.95)),
    var(--ink);
}

.concerns .section-title {
  color: var(--white);
}

.concern-list {
  width: min(100%, 860px);
  margin: 38px auto 0;
  display: grid;
  gap: 12px;
}

.concern-item {
  display: grid;
  grid-template-columns: 54px 1fr;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
}

.concern-item span {
  font-family: var(--font-en);
  font-weight: 800;
  color: var(--gold-soft);
}

.concern-item p {
  margin: 0;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
}

.tutors {
  background: var(--cream);
}

.tutor-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 42px;
}

.tutor-card {
  overflow: hidden;
}

.tutor-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: var(--sky);
}

.tutor-body {
  padding: 24px;
}

.tutor-body h3 {
  font-family: var(--font-en);
  font-size: 1.65rem;
}

.tutor-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.tutor-tags span {
  display: inline-flex;
  min-height: 29px;
  align-items: center;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--forest);
  background: #edf6ee;
  font-size: 0.78rem;
  font-weight: 800;
}

.price {
  background: var(--white);
}

.price-header {
  align-items: end;
  margin-bottom: 34px;
}

.price-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr 1fr;
  gap: 18px;
}

.price-card {
  padding: 28px;
}

.price-card-primary {
  color: var(--white);
  border-color: transparent;
  background: linear-gradient(140deg, var(--ink-strong), var(--forest));
  box-shadow: var(--shadow);
}

.price-card-primary h3,
.price-card-primary p,
.price-card-primary .price-label {
  color: var(--white);
}

.price-label {
  margin: 0 0 14px;
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: var(--forest);
}

.price-card h3 {
  font-family: var(--font-en);
  font-size: clamp(1.55rem, 3vw, 2.45rem);
  line-height: 1.12;
}

.price-card h3 span {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-ja);
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--coral);
}

.price-card-primary h3 span {
  color: var(--gold-soft);
}

.price-card strong {
  color: var(--coral);
}

.style {
  background: linear-gradient(180deg, var(--sky) 0%, var(--white) 100%);
}

.style-points {
  display: grid;
  gap: 12px;
}

.style-point {
  display: grid;
  grid-template-columns: 96px 1fr;
  align-items: center;
  gap: 18px;
  padding: 22px;
}

.style-point span {
  font-family: var(--font-en);
  font-weight: 800;
  color: var(--coral);
}

.style-point p {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
}

.contact {
  background: var(--cream);
}

.contact-email {
  margin: 22px 0 0;
  text-align: center;
  color: var(--muted);
  font-weight: 700;
}

.contact-email a {
  color: var(--forest);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.form-frame {
  width: min(100%, 920px);
  margin: 36px auto 0;
  overflow: visible;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.formrun-frame {
  padding: 0;
}

.formrun-embed {
  width: 100%;
  min-height: 1800px;
}

.form-frame iframe,
.formrun-embed iframe {
  display: block;
  width: 100%;
  height: 1800px !important;
  min-height: 1800px;
  border: 0;
}

.footer {
  padding: 42px 0;
  color: rgba(255, 255, 255, 0.72);
  background: var(--ink-strong);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.footer-brand {
  flex: 0 0 auto;
}

.footer p,
.footer small {
  margin: 0;
}

.footer-contact a {
  color: var(--gold-soft);
  font-weight: 800;
}

.footer small {
  color: rgba(255, 255, 255, 0.45);
}

[data-aos] {
  opacity: 0;
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}

[data-aos="up"] {
  transform: translateY(26px);
}

[data-aos="left"] {
  transform: translateX(-26px);
}

[data-aos="right"] {
  transform: translateX(26px);
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translate(0, 0);
}

@media (max-width: 900px) {
  .hamburger {
    display: block;
  }

  .nav {
    position: fixed;
    top: 72px;
    right: 16px;
    left: 16px;
    display: grid;
    gap: 0;
    padding: 12px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius);
    background: rgba(9, 34, 44, 0.98);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s var(--ease);
  }

  .nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-link,
  .nav-link-cta {
    width: 100%;
    min-height: 48px;
    padding: 0 12px;
    border-radius: var(--radius);
  }

  .nav-link::after {
    display: none;
  }

  .nav-link-cta {
    margin-top: 6px;
    justify-content: center;
  }

  .two-column,
  .price-header,
  .style-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .tutor-grid,
  .price-grid {
    grid-template-columns: 1fr;
  }

  .price-header {
    margin-bottom: 28px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    height: 66px;
  }

  .brand-main {
    font-size: 1.55rem;
  }

  .brand-sub {
    font-size: 0.6rem;
  }

  .nav {
    top: 66px;
  }

  .hero {
    min-height: 92svh;
  }

  .hero-content {
    padding-top: 110px;
    padding-bottom: 58px;
  }

  .hero-title {
    font-size: clamp(4.3rem, 22vw, 6.2rem);
  }

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

  .hero-tags span {
    font-size: 0.8rem;
  }

  .feature-card,
  .price-card,
  .tutor-body {
    padding: 22px;
  }

  .concern-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .style-point {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .formrun-embed,
  .formrun-embed iframe {
    height: 2200px !important;
    min-height: 2200px;
  }

  .footer-inner {
    display: grid;
  }
}