*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    interpolate-size: allow-keywords;
  }
}

:root {
  --bg: #0a0906;
  --text: #edcc93f8;
  --accent: #b89a6a;
  --muted: #8b744d;
  --white: #ffffff;
  --offwhite: #bdbdbd;
}

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

html {
  scroll-behavior: auto;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Serif JP", serif;
  font-optical-sizing: auto;
  font-style: normal;
  font-weight: 600;
  overflow-x: hidden;
  cursor: none;
  -webkit-font-smoothing: antialiased;
}


.loader {
  position: fixed;
  width: 100%;
  height: 100%;
  background: var(--bg);
  top: 0;
  left: 0;
  z-index: 9999;
}

.loader::after {
  content: "";
  display: block;
  position: absolute;
  width: 40px;
  height: 40px;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  border-left: 2px solid transparent;
  border-radius: 50%;
  margin: auto;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  animation: spin 1.5s infinite linear;
}


@keyframes spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.cursor {
  position: fixed;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.15s ease;
  transform: translate(-50%, -50%);
}

.cursor-ring {
  position: fixed;
  width: 32px;
  height: 32px;
  border: 1px solid rgba(184, 154, 106, 0.4);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transition: transform 0.4s ease, width 0.3s, height 0.3s, opacity 0.3s;
  transform: translate(-50%, -50%);
}

/* Menu Button */

.menu_btn {
  position: fixed;
  top: 1rem;
  right: 1.5rem;
  color: var(--white);
  line-height: 1;
  text-decoration: none;
  z-index: 9999;
}

.menu_btn div {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.menu_btn div span {
  position: absolute;
  width: 40px;
  height: 1px;
  background: var(--offwhite);
  top: 50%;
  left: 50%;

  transition:
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.4s ease-out;

  transform-origin: center;
}

.menu_btn div span:first-child {
  transform: translate(-50%, -5px);
}

.menu_btn div span:last-child {
  transform: translate(-50%, 5px);
}

.menu_btn.active div span:first-child {
  transform: translate(-50%, 0) rotate(45deg);
}

.menu_btn.active div span:last-child {
  transform: translate(-50%, 0) rotate(-45deg);
}

.header-nav {
  position: fixed;

  top: calc(env(safe-area-inset-top) * -1);
  left: 0;
  right: 0;
  bottom: 0;

  width: 100%;
  min-height: calc(100dvh + env(safe-area-inset-top));

  padding-top: env(safe-area-inset-top);

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  z-index: 999;

  overflow: hidden;

  transform: translateX(100%);
  transition: transform .6s ease-out;

  font-family: "Inknut Antiqua", serif;
  letter-spacing: 0.1rem;
  list-style: none;
  gap: 10px;

  isolation: isolate;
}

/* 高速スクロール時に下のコンテンツがチラ見えするのを防ぐため
backdrop-filterを直接header-navにかけず疑似要素に分離 */

.header-nav::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(10, 9, 6, 0.5);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: -1;
  transform: translateZ(0);
  will-change: transform;
}

.header-nav.active {
  transform: translateX(0);
}


/* NAV */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  display: flex;
  font-family: "Archivo", sans-serif;
  font-weight: 200;
  justify-content: flex-end;
  align-items: center;
  mix-blend-mode: normal;
  min-height: 100px;
  padding: 2rem 4rem;
  color: var(--white);
}

.nav-links {
  display: flex;
  gap: 3rem;
  list-style: none;
}

.nav-links a {
  color: #D3CECE;
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.05rem;
  text-transform: capitalize;
  transition: color 0.4s;
}

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

/* HERO */
.hero {
  height: 100lvh;
  position: relative;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  animation: slowZoom 20s ease-out forwards;
}

@keyframes slowZoom {
  from {
    transform: scale(1.08);
  }

  to {
    transform: scale(1.0);
  }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 9, 6, 0.95) 0%, rgba(10, 9, 6, 0.1) 50%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 4rem 8rem;
  margin-top: 3rem;
  opacity: 0;
  animation: fadeUp 1.4s 0.6s ease forwards;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-sub {
  font-size: 1rem;
  letter-spacing: 0.3em;
  color: var(--white);
  margin-bottom: 1.5rem;
  letter-spacing: 0.18rem;
}

.hero-title {
  font-family: "Inknut Antiqua", serif;
  font-size: 4rem;
  font-weight: 300;
  line-height: 1.05;
  color: var(--white);
  letter-spacing: 0.012em;
  max-height: 350px;
}

.hero-title em {
  font-style: italic;
  color: var(--accent);
}

.hero-desc {
  margin-top: 2rem;
  font-family: "Cormorant Garamond", serif;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  max-width: 380px;
  letter-spacing: 0.18em;
}

/* PHILOSOPHY */

.philosophy-content {

  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem 6rem 2rem;
  position: relative;
  overflow: hidden;
}

.philosophy-sm {
  max-width: 700px;
  position: absolute;
  top: 50%;
  left: 50%;

  width: 600px;
  height: auto;

  transform: translate(-50%, -50%);
  opacity: 0.5;

  pointer-events: none;
  z-index: 0;

  animation:
    smokeFloat 18s ease-in-out infinite,
    smokeBlink 7s ease-in-out infinite;

  will-change: transform, opacity;

}

@keyframes smokeFloat {
  0% {
    transform: translate(-50%, -50%) scale(1);
  }

  25% {
    transform: translate(-48%, -52%) scale(1.05);
  }

  75% {
    transform: translate(-52%, -48%) scale(1.03);
  }

  100% {
    transform: translate(-50%, -50%) scale(1);
  }
}

@keyframes smokeBlink {

  0%,
  100% {
    opacity: 0.35;
  }

  50% {
    opacity: 0.55;
  }
}


.philosophy-content a:hover {
  color: var(--muted);
}

.philosophy-content h1 {
  font-size: 0.9rem;
  font-family: "BIZ UDPMincho", serif;
  line-height: 2;
  color: var(--white);
  letter-spacing: 0.12rem;
  margin: 1rem;
  text-shadow:
    0 0 2px rgba(184, 154, 106, 0.55);
}

.philosophy-content h2 {
  font-size: 0.9em;
  line-height: 2;
  color: var(--text);
  letter-spacing: 0.13em;
  margin: 1.2rem;
  text-shadow:
    0 0 0.8px rgba(143, 141, 141, 0.9);
}


.JP-line {
  margin: 1rem;
}

.EN-Author {
  font-family: "BIZ UDPMincho", serif;
  font-size: 0.6em;
  color: var(--white);
  text-shadow:
    0 0 2px rgba(184, 154, 106, 0.55);
  letter-spacing: 0.12rem;
  margin: 1rem;
}

.JP-Author {
  font-size: 0.6em;
  font-weight: 700;
  color: var(--text);
  text-shadow:
    0 0 0.8px rgba(143, 141, 141, 0.9);
  letter-spacing: 0.16rem;
  margin: 1.5rem;
}

.philosophy-content h3 {
  margin: 4rem;
}

.PH-link {
  font-family: "Inknut Antiqua", serif;
  opacity: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20rem 4rem 0 4rem;
  font-size: 2.2rem;
  font-weight: 100;
  color: var(--white);
  transform: translateY(20px);
  filter: blur(10px);
  transition: opacity 1s ease, transform 1s ease, filter 1s ease;
}

.PH-link a {
  display: inline-flex;
  align-items: center;
}

.PH-link a::before {
  content: ">";
  margin-right: 1rem;
  font-size: 0.7em;
  color: var(--white);
  transition: transform 1s ease;
  display: inline-block;
}

.PH-link a:hover::before {
  color: var(--muted);
  transform: translateX(6px);
}

.philosophy-content.is-active .PH-link {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.PH-link.animate {
  animation: tvBlink 3s infinite ease-in-out;
}

@keyframes tvBlink {
  0% {
    opacity: 1;
    filter: blur(0px);
  }

  50% {
    opacity: 0.3;
    filter: blur(1px);
  }

  100% {
    opacity: 1;
    filter: blur(0px);
  }
}


/* SECTIONS */
section {
  padding: 10rem 0;
}

/* ATMOSPHERE */
.atmosphere {
  background: var(--bg);
}

.atmosphere-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 500px 350px;
  gap: 3px;
  margin-top: 0;
}

.atm-img {
  overflow: hidden;
  position: relative;
}

.atm-img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 重ねる */
.atm-img .img-light {
  position: absolute;
  inset: 0;

  opacity: 0;

  transition:
    opacity 0.45s cubic-bezier(.22, .61, .36, 1);
}

/* 切り替え時 */
.atm-img.active .img-light {
  opacity: 1;
}

.atm-img.large {
  grid-column: span 2;
}

.atm-img.tall {
  grid-row: span 2;
}

/* SYSTEM */

.system {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 4rem 0 4rem;
}

.system-title {
  font-family: "Inknut Antiqua", serif;
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 5rem;
}

.system-title-cards {
  display: flex;
  gap: 8rem;
  align-items: start;
}

.system-text p {
  font-size: 0.85rem;
  line-height: 2.2;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 2rem;
}

.system-cards {
  display: flex;
  flex-direction: row;
  gap: 10px;
}

.sys-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 5px;
  padding: 2.5rem;
  position: relative;
  width: 33.3%;
  transition:
    transform .4s ease,
    background .4s ease;
}

.sys-card:hover {
  transform: translateY(-4px);
}

.sys-num {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1em;
  color: var(--accent);
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
}

.sys-title {
  font-size: 1.2rem;
  font-family: "Inknut Antiqua", serif;
  color: var(--white);
  letter-spacing: 0.15em;
  margin: 3rem 0 0 0;
  font-weight: 300;
  line-height: 1.2;
}

.sys-hsk {
  font-size: 0.8rem;
  color: var(--white);
  letter-spacing: 0.15em;
  margin: 1em 0 1em 0;
  font-weight: 300;
}

.sys-price {
  color: var(--text);
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.5rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  line-height: 1.3;
}

.sys-price span {
  font-size: 0.9rem;
  color: var(--text);
  font-family: 'Noto Serif JP', serif;
  letter-spacing: 0.1em;
  margin-left: 0.3rem;
}

.sys-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 2.2;
  margin: 3rem 0 1rem 0;
  letter-spacing: 0.2em;
}

.system-note {
  font-size: 0.8rem;
  margin-top: 60px;
  margin-bottom: 40px;
  margin-left: 16px;
  color: var(--offwhite);
  letter-spacing: 0.15rem;
  line-height: 2;
}

.system-note li {
  list-style: none;
  margin-bottom: 1rem;
}

#system {
  padding-bottom: 0;
}

/* ACCESS */

.access {
  padding: 0;
  height: 100vh;
  overflow: hidden;
  position: relative;
  z-index: 10;
  text-shadow:
    3px 3px 8px rgba(0, 0, 0, 0.9);
  letter-spacing: 2.5rem;
}

#access {
  padding-bottom: 0;
}

.acs-overlay1 {
  position: absolute;
  z-index: 2;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 9, 6, 0.95) 0%, rgba(10, 9, 6, 0.1) 50%, transparent 100%);
}

.acs-overlay2 {
  position: absolute;
  z-index: 2;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 9, 6, 0.95) 0%, rgba(10, 9, 6, 0.1) 50%, transparent 100%);
}

.access img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.6) saturate(0.6);
  transition: filter 0.8s ease, transform 0.8s ease;
  z-index: 1;
}

.access.active img {
  transform: scale(1.04);
  filter: brightness(1.0) saturate(0.8);
}

.access-inner {
  position: absolute;
  max-width: 1200px;
  align-items: center;
  inset: 0;
  display: flex;
  gap: 1.5rem;
  padding: 0 4rem 0 4rem;
  margin: auto;
  z-index: 3;
}

.access-info h2 {
  font-family: "Inknut Antiqua", serif;
  font-size: 2.5rem;
  font-weight: 300;
  color: var(--white);
  margin-bottom: 3rem;
  letter-spacing: 0.05em;
}

.access-row {
  padding: 1.8rem 0;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 1rem;
}


.access-label {
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  padding-top: 0.2rem;
}

.access-val1 {
  font-size: 0.85rem;
  color: var(--white);
  line-height: 2;
  letter-spacing: 0.1em;
  align-items: center;
}

.access-val1 :hover {
  color: #e5b35e;
}

.access-val1 a {
  font-size: 0.8rem;
  color: #ffd896;
  display: inline-flex;
  align-items: center;
  text-shadow:
    3px 4px 2px rgba(0, 0, 0, 0.9);
}


.access-val1 a::before {
  content: ">";
  margin-right: 0.6rem;
  font-size: 0.8em;
  color: #ffd896;
  transition: transform 0.6s ease;
  display: inline-block;
}

.access-val1 a:hover::before {
  color: #e5b35e;
  transform: translateX(6px);
}

.access-val2 {
  font-size: 0.85rem;
  color: var(--white);
  line-height: 2;
  letter-spacing: 0.1em;
  /* font-weight: 300; */
  align-items: center;
}

.access-val2a {
  font-size: 0.8rem;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  text-shadow: none;
}



/* EPILOGUE */

.ending-area {
  position: relative;
  overflow: hidden;
}

.epl-section {
  padding: 18rem 4rem;
  text-align: center;
  position: relative;
}

.epl-section p {
  position: relative;
  justify-content: center;
  z-index: 2;
  color: var(--accent);
  line-height: 2;
  letter-spacing: 0.3em;
  font-size: 0.8em;
  text-shadow:
    0 0 0.8px rgba(255, 230, 190, 0.9),
    0 0 5px rgba(184, 154, 106, 0.55),
    0 0 16px rgba(184, 154, 106, 0.28);
  opacity: 0;
}

.epl-section p.show {
  opacity: 1;
}

.epl-section p span {
  opacity: 0;
  display: inline-block;
  transform: translateY(1px);
  animation: fadeLetter 1.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.epsp {
  font-size: 0.5em;
}

@keyframes fadeLetter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.epl-sm {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
  mix-blend-mode: screen;
  filter: blur(0.9px);
  pointer-events: none;
  z-index: 0;
}

.epl-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 10rem;
  z-index: 3;
  background: linear-gradient(to bottom, rgba(10, 9, 6, 0.95) 0%, rgba(10, 9, 6, 0.1) 50%, transparent 100%);
}



/* SNS */
.sns-section {
  padding: 6rem 4rem;
  text-align: center;
}

.sns-section p {
  font-family: "Inknut Antiqua", serif;
  font-size: 0.9rem;
  letter-spacing: 0.25em;
  color: var(--white);
  text-transform: uppercase;
  margin-bottom: 2.5rem;
  text-shadow:
    0 0 2px rgba(255, 230, 190, 0.9);
}

.sns-links {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.sns-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.2rem;
  color: var(--white);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-shadow:
    0 0 2px rgba(255, 230, 190, 0.9);
  text-transform: uppercase;
  transition: color 0.4s, border-color 0.4s;
}

.sns-links a:hover {
  color: var(--accent);
}

.sd-logo {
  width: 200px;
}



/* FOOTER */
footer {
  padding: 4rem 0 1rem 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 2;
}

footer p {
  font-size: 0.6rem;
  color: var(--offwhite);
  letter-spacing: 0.2em;
  line-height: 1.5;
}

.footer_logo {
  width: 180px;
  margin: 3rem;
}

/* REVEAL ANIM */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition:
    opacity 0.9s ease,
    transform 0.9s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}


@media (min-width: 768px) {
  .menu_btn {
    display: none;
  }
}

@media (max-width: 768px) {

  .cursor {
    display: none;
  }

  .cursor-ring {
    display: none;
  }

  nav {
    padding: 2rem;
  }

  .nav-links {
    display: none;
  }

  section {
    padding: 6rem 0;
  }

  .philosophy-sm {
    width: 100lvw;
  }

  @media (hover: hover) {
    .atm-img:hover img {
      filter: brightness(1.1) saturate(1);
    }
  }

  .system {
    padding: 12rem 0 8rem;
  }

  .system-title,
  .system-note {
    padding: 0 1.5rem;
  }

  .system-cards {
    flex-direction: column;
    width: 100%;
    gap: 14px;
    padding: 0 1rem;
  }

  .sys-head {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    gap: 1rem;
  }

  .sys-num {
    font-size: 1rem;
    margin: 0;
  }

  .sys-title {
    margin: 0;
  }

  .sys-price {
    margin: 0 0 0 16px;
  }

  .sys-card {
    width: 100%;
    padding: 1.6rem 1.8rem 2.2rem 1.8rem;
  }

  .sys-desc {
    padding: 0;
    font-size: 13px;
    letter-spacing: 0.15rem;
    line-height: 1.8;
    margin: 1.5rem 0 0;
  }

  .system-note {
    font-size: 13px;
  }

  .access-inner {
    padding: 6rem 2rem;
  }

  .system-note li {
    margin-bottom: 2rem;
    line-height: 1.8;
  }

  .sys-hsk {
    display: none;
  }

  .img-access {
    display: none;
  }

  .atmosphere-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 340px 340px;
  }

  .atm-img {
    height: 340px;
  }

  .atm-img img {
    object-fit: cover;
  }

  .atm-img.large,
  .atm-img.tall {
    grid-column: auto;
    grid-row: auto;
  }

  .access {
    text-shadow: none;
    font-weight: 400;
  }

  .hide-mobile {
    display: none;
  }

  footer {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .hero-content {
    padding: 1rem;
  }

  .epl-section {
    padding: 18rem 2rem;
  }

  .smt {
    width: 400px;
    opacity: 0.2;
  }

  .epl-sm p {
    font-size: 10px;
  }

  .hero-title {
    font-size: 72px;
    letter-spacing: 0.01em;
    margin-left: -7px;
    line-height: 1em;
    padding-top: 14px;
  }

  .hero-desc {
    line-height: 1.6;
    margin-top: 32px;
  }
}

@media (max-width: 580px) {

  .philosophy-content {
    margin: 2rem 0;
    padding: 8rem 1rem 6rem 1rem;
  }

  .PH-link {
    padding: 10rem 1rem 0;
    font-size: 2.2rem;
  }
}