:root {
  --navy: #20384a;
  --navy-soft: #496573;
  --green: #6f9c99;
  --green-light: #d7e6e4;
  --coral: #d98c78;
  --paper: #fbfaf7;
  --paper-deep: #f4f6f3;
  --mist: #edf2f1;
  --line: rgba(111, 156, 153, 0.25);
  --shadow: 0 18px 50px rgba(32, 56, 74, 0.07);
  color: var(--navy);
  background: var(--paper);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  font-synthesis: none;
  scroll-behavior: smooth;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--paper);
}

body {
  margin: 0;
  background: var(--mist);
}

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

.site-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header {
  position: absolute;
  z-index: 2;
  top: 0;
  left: 50%;
  width: 100%;
  max-width: 1200px;
  padding: 19px 20px;
  transform: translateX(-50%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--navy);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.025em;
}

.brand img {
  width: 48px;
  height: auto;
}

.header-contact {
  border-bottom: 1px solid var(--coral);
  color: var(--navy-soft);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: color 180ms ease, border-color 180ms ease;
}

main,
.site-footer {
  max-width: 1200px;
  margin-right: auto;
  margin-left: auto;
}

main {
  background: var(--paper);
}

.hero {
  position: relative;
  display: flex;
  min-height: 704px;
  padding: 145px 22px 86px;
  overflow: hidden;
}

.hero__copy {
  position: relative;
  z-index: 1;
}

.hero__role,
.hero__name-en,
.section-heading > p,
.contact__label,
.service-card__number {
  color: var(--green);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.19em;
  text-transform: uppercase;
}

.hero__role {
  margin: 0 0 20px;
}

.hero__identity {
  padding-left: 16px;
  border-left: 3px solid rgba(217, 140, 120, 0.86);
}

h1 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(39px, 11.8vw, 56px);
  font-weight: 600;
  letter-spacing: 0.13em;
  line-height: 1.16;
}

.hero__name-en {
  margin: 10px 0 0;
  letter-spacing: 0.28em;
}

.hero__message {
  margin: 48px 0 0;
  color: var(--navy);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(29px, 8.8vw, 43px);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.46;
}

.hero__contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  margin-top: 33px;
  padding: 0 23px;
  border: 1px solid var(--green);
  border-radius: 999px;
  background: rgba(251, 250, 247, 0.76);
  color: var(--navy);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1em;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

/* ボタン群（LINE / メール 共通） */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.3;
  text-align: center;
  white-space: nowrap;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.btn--line {
  border-color: var(--green);
  background: var(--green);
  color: #fff;
  box-shadow: 0 10px 24px rgba(111, 156, 153, 0.28);
}

.btn--mail {
  border-color: var(--green);
  background: rgba(251, 250, 247, 0.76);
  color: var(--navy);
}

.btn--ghost {
  min-height: 46px;
  padding: 0 20px;
  border-color: var(--green);
  background: transparent;
  color: var(--navy);
  font-size: 14px;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 340px;
  margin-top: 33px;
}

.hero__actions .btn {
  width: 100%;
}

.hero__visual {
  position: absolute;
  right: -166px;
  bottom: -1px;
  width: 590px;
  opacity: 0.38;
}

.hero__visual svg {
  display: block;
  width: 100%;
  height: auto;
}

.hero__scroll {
  position: absolute;
  bottom: 23px;
  left: 22px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--green);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.section {
  padding: 79px 22px;
  border-top: 1px solid rgba(111, 156, 153, 0.1);
}

.section-heading > p {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 17px;
}

.section-heading > p::before {
  width: 30px;
  height: 2px;
  content: "";
  background: var(--coral);
}

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

h2 {
  margin-bottom: 0;
  color: var(--navy);
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(27px, 8vw, 39px);
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1.55;
}

.about {
  background: rgba(255, 255, 255, 0.78);
}

.about__text {
  margin-top: 31px;
  color: var(--navy-soft);
  font-size: 15px;
  line-height: 2.1;
}

.about__text p {
  margin-bottom: 18px;
}

.about__text p:last-child {
  margin-bottom: 0;
}

.desktop-only {
  display: none;
}

.services {
  background: var(--paper-deep);
}

.services__grid {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}

.service-card {
  position: relative;
  min-height: 203px;
  padding: 25px 23px 23px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.76);
  box-shadow: 0 11px 30px rgba(32, 56, 74, 0.028);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.service-card__number {
  margin-bottom: 21px;
  color: var(--coral);
}

.service-card h3 {
  margin-bottom: 13px;
  color: var(--navy);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.55;
}

.service-card p:last-child {
  margin-bottom: 0;
  color: var(--navy-soft);
  font-size: 14px;
  line-height: 1.85;
}

.contact {
  position: relative;
  overflow: hidden;
  padding: 88px 22px 92px;
  border-top: 1px solid rgba(111, 156, 153, 0.1);
  background: rgba(255, 255, 255, 0.82);
}

.contact::after {
  position: absolute;
  right: -30px;
  bottom: -50px;
  width: 250px;
  height: 130px;
  border: solid var(--green-light);
  border-width: 8px 0 0;
  border-radius: 50% 50% 0 0;
  content: "";
  opacity: 0.55;
  transform: rotate(-10deg);
}

.contact__content {
  position: relative;
  z-index: 1;
}

.contact__sun {
  position: absolute;
  top: 53px;
  right: 12px;
  width: 82px;
  height: 82px;
  border-radius: 50%;
  background: var(--coral);
  opacity: 0.16;
}

.contact__label {
  margin-bottom: 15px;
}

.contact h2 {
  max-width: 550px;
  font-size: clamp(23px, 6.2vw, 39px);
  letter-spacing: 0.035em;
}

.contact__content > p:not(.contact__label) {
  margin: 18px 0 26px;
  color: var(--navy-soft);
  font-size: 14px;
  line-height: 1.9;
}

.contact__mail {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  color: var(--navy);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: clamp(14px, 4.2vw, 16px);
  font-weight: 600;
  letter-spacing: 0.015em;
  transition: color 180ms ease;
}

.contact__mail-icon {
  display: grid;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--green);
  border-radius: 50%;
  transition: background 180ms ease;
}

.contact__mail-icon svg {
  width: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.65;
}

.site-footer {
  flex-wrap: wrap;
  gap: 14px 20px;
  padding: 24px 22px 28px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.brand--footer {
  gap: 5px;
  font-size: 14px;
}

.brand--footer img {
  width: 38px;
}

.site-footer p {
  margin: 0;
  color: var(--navy-soft);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 10px;
  letter-spacing: 0.08em;
}

/* Works */
.works {
  background: rgba(255, 255, 255, 0.78);
}

.works__lead {
  margin: 26px 0 0;
  color: var(--navy-soft);
  font-size: 15px;
  line-height: 1.95;
}

.works__grid {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.work-group {
  padding: 24px 22px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.7);
}

.work-group h3 {
  margin-bottom: 15px;
  padding-bottom: 11px;
  border-bottom: 1px solid rgba(111, 156, 153, 0.2);
  color: var(--navy);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.work-group ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.work-group li {
  position: relative;
  padding-left: 18px;
  color: var(--navy-soft);
  font-size: 14px;
  line-height: 2.0;
}

.work-group li::before {
  position: absolute;
  top: 0.95em;
  left: 0;
  width: 9px;
  height: 2px;
  content: "";
  background: var(--coral);
}

/* Music */
.music {
  background: var(--paper-deep);
}

.music__inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
}

.music__cover {
  flex: 0 0 auto;
}

.music__cover img {
  display: block;
  width: 140px;
  height: 140px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.music__text {
  margin: 22px 0 0;
  color: var(--navy-soft);
  font-size: 15px;
  line-height: 2.0;
}

.music__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 20px;
  align-items: center;
  margin-top: 22px;
}

/* LINE */
.line {
  background: linear-gradient(180deg, rgba(111, 156, 153, 0.08), rgba(111, 156, 153, 0.03));
}

.line__inner {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.line__text {
  margin: 24px 0 0;
  color: var(--navy-soft);
  font-size: 15px;
  line-height: 2.0;
}

.line__actions {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
  max-width: 340px;
  margin-top: 26px;
}

.line__actions .btn {
  width: 100%;
}

.line__note {
  margin: 18px 0 0;
  color: var(--navy-soft);
  font-size: 13px;
  line-height: 1.85;
}

.line__qr {
  flex: 0 0 auto;
}

.line__qr-box {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  justify-content: center;
  width: 168px;
  height: 168px;
  border: 1.5px dashed rgba(111, 156, 153, 0.6);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.6);
}

.line__qr-label {
  color: var(--navy-soft);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.line__qr-sub {
  color: var(--green);
  font-size: 12px;
  letter-spacing: 0.1em;
}

/* テキストリンク（控えめ） */
.text-link {
  border-bottom: 1px solid var(--coral);
  color: var(--navy-soft);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color 180ms ease, border-color 180ms ease;
}

/* フッターリンク */
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.footer-links a {
  color: var(--navy-soft);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition: color 180ms ease;
}

@media (hover: hover) {
  .header-contact:hover {
    border-color: var(--green);
    color: var(--green);
  }

  .hero__contact:hover {
    background: var(--green);
    color: #fff;
    transform: translateY(-2px);
  }

  .btn--line:hover {
    background: #5f8b88;
    border-color: #5f8b88;
    transform: translateY(-2px);
  }

  .btn--mail:hover,
  .btn--ghost:hover {
    background: var(--green);
    border-color: var(--green);
    color: #fff;
    transform: translateY(-2px);
  }

  .text-link:hover {
    border-color: var(--green);
    color: var(--green);
  }

  .footer-links a:hover {
    color: var(--green);
  }

  .work-group:hover {
    border-color: rgba(111, 156, 153, 0.5);
  }

  .service-card:hover {
    border-color: rgba(111, 156, 153, 0.56);
    box-shadow: var(--shadow);
    transform: translateY(-4px);
  }

  .contact__mail:hover {
    color: var(--green);
  }

  .contact__mail:hover .contact__mail-icon {
    background: var(--paper-deep);
  }
}

@media (min-width: 720px) {
  .site-header {
    padding: 25px 40px;
  }

  .brand {
    gap: 9px;
    font-size: 20px;
  }

  .brand img {
    width: 57px;
  }

  .header-contact {
    font-size: 12px;
  }

  .hero {
    min-height: 760px;
    padding: 189px 8vw 104px;
  }

  .hero__message {
    margin-top: 55px;
  }

  .hero__visual {
    right: -44px;
    width: min(61vw, 740px);
    opacity: 0.51;
  }

  .hero__scroll {
    bottom: 31px;
    left: 8vw;
  }

  .section {
    padding: 116px 8vw;
  }

  .desktop-only {
    display: inline;
  }

  .about__text {
    max-width: 850px;
    margin-top: 41px;
    font-size: 16px;
  }

  .services__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 17px;
    max-width: 1160px;
    margin-top: 43px;
  }

  .service-card {
    min-height: 234px;
    padding: 28px 24px 26px;
  }

  .contact {
    padding: 120px 8vw 126px;
  }

  .contact__sun {
    top: 65px;
    right: 10vw;
    width: 132px;
    height: 132px;
  }

  .hero__actions {
    flex-direction: row;
    flex-wrap: wrap;
    max-width: none;
  }

  .hero__actions .btn {
    width: auto;
  }

  .works__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 17px;
    max-width: 1160px;
    margin-top: 40px;
  }

  .work-group {
    padding: 28px 26px;
  }

  .music__inner {
    flex-direction: row;
    gap: 38px;
    align-items: center;
    max-width: 940px;
  }

  .music__cover img {
    width: 168px;
    height: 168px;
  }

  .line__inner {
    flex-direction: row;
    gap: 56px;
    align-items: center;
    justify-content: space-between;
  }

  .line__actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    max-width: none;
  }

  .line__actions .btn {
    width: auto;
  }

  .line__qr-box {
    width: 188px;
    height: 188px;
  }

  .site-footer {
    padding: 27px 8vw 31px;
  }
}

@media (min-width: 1200px) {
  main,
  .site-footer {
    box-shadow: var(--shadow);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}