/*
 * 2026年版の編集的なページデザイン。
 * 大きな色面と、一度だけ静かに動く演出をまとめる。
 * フッター固有の指定は footer.css で管理する。
 */

.site {
  background: var(--color-editorial-paper);
}

.site main {
  overflow: clip;
}

/* 共通のスクロール表示 */
.reveal {
  opacity: 1;
  transform: none;
}

html[data-enhanced="true"] .reveal {
  opacity: 0;
  transform: translateY(1.35rem);
  transition:
    opacity var(--duration-reveal) var(--ease-reveal),
    transform var(--duration-reveal) var(--ease-reveal);
  transition-delay: calc(
    var(--reveal-delay, 0ms) +
      (var(--reveal-index, 0) * var(--reveal-stagger, 0ms))
  );
}

html[data-enhanced="true"] .reveal[data-visible="true"] {
  opacity: 1;
  transform: none;
}

.free-illustration {
  margin: 0;
}

.free-illustration__canvas {
  position: relative;
  display: grid;
  place-items: center;
  background: #fbf7eb;
}

.free-illustration__canvas img {
  width: 100%;
  object-fit: contain;
}

.eyebrow {
  gap: 0.6rem;
  margin-bottom: 1.25rem;
  color: var(--color-editorial-mint-deep);
  font-family: var(--font-latin);
  font-size: clamp(0.94rem, 1.05vw, 1.02rem);
  font-weight: 760;
  letter-spacing: 0.13em;
}

.eyebrow::before {
  width: 0.8rem;
  height: 0.8rem;
  background: var(--color-brand-green);
}

/* ヘッダー */
.site-header {
  padding-block: 0.45rem;
  border-bottom: 1px solid rgb(36 54 47 / 9%);
  background: rgb(255 255 255 / 96%);
  backface-visibility: hidden;
  box-shadow: 0 0.45rem 1.8rem rgb(36 54 47 / 5%);
  backdrop-filter: blur(18px);
  transform: translateZ(0);
  transition:
    background-color var(--duration-normal) var(--ease-standard),
    border-color var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
}

.site-header.is-scrolled {
  padding-block: 0.45rem;
  border-bottom: 1px solid rgb(36 54 47 / 10%);
  background: rgb(255 255 255 / 94%);
  box-shadow: 0 0.6rem 2rem rgb(36 54 47 / 8%);
  backdrop-filter: blur(18px);
}

.site-header__inner {
  width: min(calc(100% - clamp(1.5rem, 4vw, 4rem)), 90rem);
  min-height: 3.25rem;
  gap: clamp(1rem, 2.25vw, 2.25rem);
}

.site-header__brand {
  width: clamp(11.75rem, 13vw, 13rem);
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.site-header__logo-image {
  display: block;
  width: 100%;
  height: auto;
}

.site-header__nav-list {
  gap: clamp(0.8rem, 1.55vw, 1.55rem);
}

.site-header__nav a {
  position: relative;
  color: var(--color-editorial-ink);
  font-size: 0.77rem;
  letter-spacing: 0.025em;
}

.site-header__nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.45rem;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-normal) var(--ease-reveal);
}

.site-header__nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-header__cta {
  min-height: 3.2rem;
  background: var(--color-editorial-ink);
  color: var(--color-editorial-white);
}

.site-header__cta:hover {
  background: var(--color-editorial-mint-deep);
}

.site-header__menu-button {
  width: 3.25rem;
  height: 3.25rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--color-brand-gray);
  box-shadow: none;
}

.site-header__menu-button:hover {
  border-color: transparent;
  background: transparent;
  color: var(--color-editorial-ink);
}

.site-header:not(.is-scrolled) :where(a, button):focus-visible {
  outline-color: var(--color-editorial-ink);
  box-shadow: 0 0 0 4px rgb(36 54 47 / 20%);
}

.mobile-menu {
  background:
    radial-gradient(circle at 85% 20%, rgb(120 203 182 / 28%), transparent 30%),
    var(--color-editorial-paper-light);
}

.mobile-menu__nav a {
  border-color: rgb(36 54 47 / 15%);
  color: var(--color-editorial-ink);
  font-size: 1.08rem;
}

.mobile-action {
  opacity: 0;
  pointer-events: none;
  transform: translateY(calc(100% + 1rem));
  visibility: hidden;
  transition:
    opacity 420ms var(--ease-reveal),
    transform 420ms var(--ease-reveal),
    visibility 420ms;
}

.mobile-action.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: none;
  visibility: visible;
}

/* ボタン */
.button {
  min-height: 3.6rem;
  border-radius: var(--radius-pill);
  font-weight: 720;
}

.button--primary {
  background: var(--color-editorial-ink);
}

.button--primary:hover {
  background: var(--color-editorial-mint-deep);
}

.button--primary .button__arrow {
  background: var(--color-editorial-mint);
  color: var(--color-editorial-ink);
}

.button--text,
.button--text:hover {
  color: var(--color-editorial-ink);
}

.button--text .button__arrow {
  border-color: rgb(36 54 47 / 22%);
  background: rgb(255 253 247 / 52%);
}

/* ファーストビュー */
.hero {
  position: relative;
  min-height: min(58rem, 100svh);
  overflow: hidden;
  padding: calc(var(--header-height) + clamp(4rem, 7vh, 6rem))
    clamp(1.25rem, 4vw, 4rem) clamp(8.5rem, 14vh, 11rem);
  background:
    radial-gradient(circle at 82% 15%, rgb(255 255 255 / 30%), transparent 22%),
    var(--color-editorial-mint);
  isolation: isolate;
}

.hero::before {
  position: absolute;
  z-index: 6;
  top: auto;
  right: 0;
  bottom: 0;
  left: 0;
  width: auto;
  height: 2.75rem;
  background: var(--color-editorial-white);
  clip-path: none;
  content: "";
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' preserveAspectRatio='none'%3E%3Cpath d='M0 100 C10 100 34 0 50 0 C66 0 90 100 100 100 L0 100 Z' fill='black'/%3E%3C/svg%3E")
    center / 100% 100% no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' preserveAspectRatio='none'%3E%3Cpath d='M0 100 C10 100 34 0 50 0 C66 0 90 100 100 100 L0 100 Z' fill='black'/%3E%3C/svg%3E")
    center / 100% 100% no-repeat;
  opacity: 1;
}

.hero::after {
  position: absolute;
  z-index: 0;
  top: 9%;
  right: 2%;
  width: min(49rem, 57vw);
  aspect-ratio: 1.22;
  border: 1px solid rgb(255 253 247 / 38%);
  border-radius: 50%;
  content: "";
  transform: rotate(-8deg);
}

.hero__ridge {
  position: absolute;
  z-index: 5;
  right: 0;
  bottom: 1.35rem;
  left: 0;
  height: clamp(2.8rem, 4.5vw, 4.5rem);
  color: rgb(255 253 247 / 52%);
  pointer-events: none;
}

.hero__ridge svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.hero__ridge path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.25;
  vector-effect: non-scaling-stroke;
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  width: min(100%, 90rem);
  min-height: 36rem;
  margin-inline: auto;
  align-items: center;
  grid-template-columns: minmax(23rem, 0.82fr) minmax(24rem, 1.18fr);
  gap: clamp(1.5rem, 4vw, 5rem);
}

.hero__content {
  z-index: 4;
  max-width: 42rem;
  animation: sf-hero-copy-in 900ms 120ms var(--ease-reveal) both;
}

.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--color-editorial-ink);
  font-size: 0.96rem;
  font-weight: 760;
  letter-spacing: 0.16em;
}

.hero__kicker::before {
  width: 2.4rem;
  height: 1px;
  background: currentColor;
  content: "";
}

.hero__title {
  max-width: none;
  margin-top: clamp(1.5rem, 3vh, 2.5rem);
  color: var(--color-editorial-ink);
  font-family: var(--font-sans);
  font-size: clamp(3.15rem, 5.2vw, 5.65rem);
  font-weight: 760;
  letter-spacing: -0.07em;
  line-height: 1.18;
}

.hero__lead {
  max-width: 34rem;
  margin-top: clamp(1.75rem, 3.8vh, 3rem);
  color: rgb(36 54 47 / 84%);
  font-size: clamp(1.02rem, 1.35vw, 1.25rem);
  font-weight: 580;
  letter-spacing: 0.02em;
  line-height: 2;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.2rem;
  margin-top: clamp(2rem, 4.5vh, 3.25rem);
}

.hero__actions .button {
  width: min(100%, 15rem);
  justify-content: space-between;
}

.hero__actions .button--primary {
  border: 1px solid #fff;
  background: #fff;
  color: var(--color-editorial-ink);
  box-shadow: 0 0.85rem 2.2rem rgb(36 54 47 / 11%);
}

.hero__actions .button--primary:hover {
  border-color: var(--color-editorial-ink);
  background: var(--color-editorial-ink);
  color: var(--color-editorial-white);
  transform: translateY(-2px);
}

.hero__actions .button--primary .button__arrow {
  background: var(--color-editorial-ink);
  color: #fff;
}

.hero__actions .button--primary:hover .button__arrow {
  background: var(--color-editorial-white);
  color: var(--color-editorial-ink);
}

.hero__actions .button--text {
  min-height: 3.6rem;
  padding-inline: 1.25rem 0.62rem;
  border: 1px solid rgb(255 255 255 / 74%);
  border-radius: var(--radius-pill);
  background: rgb(255 255 255 / 42%);
  color: var(--color-editorial-ink);
  backdrop-filter: blur(10px);
}

.hero__actions .button--text:hover {
  border-color: #fff;
  background: rgb(255 255 255 / 68%);
  color: var(--color-editorial-ink);
}

.hero__actions .button--text::before {
  display: none;
}

.hero__actions .button--text .button__arrow {
  border-color: transparent;
  background: #fff;
}

.hero__wordmark {
  position: absolute;
  z-index: 1;
  display: grid;
  top: 47%;
  left: 50%;
  width: max-content;
  margin: 0;
  color: rgb(255 253 247 / 50%);
  font-family: var(--font-latin);
  font-size: clamp(8rem, 17vw, 17rem);
  font-weight: 800;
  letter-spacing: -0.075em;
  line-height: 0.76;
  row-gap: 0.09em;
  white-space: nowrap;
  transform: translate(-50%, -50%);
  user-select: none;
}

.hero__art {
  position: relative;
  z-index: 3;
  width: min(92%, 35rem);
  margin: 0;
  justify-self: center;
  animation: sf-hero-art-in 1050ms 180ms var(--ease-reveal) both;
}

.hero__art .free-illustration__canvas {
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid rgb(255 253 247 / 55%);
  border-radius: 50%;
  box-shadow:
    0 2rem 5rem rgb(36 54 47 / 12%),
    inset 0 0 0 0.7rem rgb(255 255 255 / 18%);
}

.hero__art .free-illustration__canvas::after {
  position: absolute;
  top: -20%;
  bottom: -20%;
  left: -35%;
  width: 18%;
  background: linear-gradient(
    90deg,
    transparent,
    rgb(255 255 255 / 64%),
    transparent
  );
  content: "";
  filter: blur(0.45rem);
  pointer-events: none;
  transform: rotate(18deg);
  animation: sf-shine-pass 6.8s 1.5s ease-in-out infinite;
}

.hero__art img {
  width: 90%;
  transform: translateY(1.5%);
}

.hero__statement {
  position: absolute;
  z-index: 4;
  bottom: clamp(6.4rem, 11vh, 8.2rem);
  left: clamp(1.25rem, 4vw, 4rem);
  color: var(--color-editorial-ink);
  font-size: 0.76rem;
  font-weight: 680;
  letter-spacing: 0.08em;
}

.hero__side-note {
  position: absolute;
  z-index: 4;
  right: 0;
  bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--color-editorial-ink);
  font-family: var(--font-latin);
  font-size: 0.58rem;
  font-weight: 750;
  letter-spacing: 0.22em;
  transform: rotate(90deg);
  transform-origin: right bottom;
}

.hero__side-note i {
  position: relative;
  display: block;
  width: 4rem;
  height: 1px;
  overflow: hidden;
  background: rgb(36 54 47 / 25%);
}

.hero__side-note i::after {
  position: absolute;
  inset: 0;
  background: var(--color-editorial-ink);
  content: "";
  transform: translateX(-100%);
  animation: sf-scroll-line 2.3s ease-in-out infinite;
}

.hero__spark {
  position: absolute;
  z-index: 5;
  display: block;
  pointer-events: none;
}

.hero__spark--one {
  --spark-size: clamp(2rem, 3.6vw, 4rem);

  top: 19%;
  right: 8%;
}

.hero__spark--two {
  --spark-size: clamp(1rem, 1.65vw, 1.7rem);

  top: 27%;
  right: 12.5%;
}

/* ファーストビューから案内へのつなぎ */
.brand-bridge {
  position: relative;
  z-index: 8;
  overflow: hidden;
  border-bottom: 1px solid rgb(36 54 47 / 11%);
  background: var(--color-editorial-white);
  color: var(--color-editorial-ink);
}

.brand-bridge__inner {
  position: relative;
  display: grid;
  width: min(calc(100% - clamp(2.5rem, 8vw, 8rem)), 82rem);
  min-height: clamp(12rem, 18vw, 16.5rem);
  margin-inline: auto;
  align-items: center;
  padding-block: clamp(2.8rem, 5vw, 4.5rem);
  grid-template-columns: minmax(12rem, 0.55fr) minmax(0, 1.45fr);
  gap: 1.8rem clamp(3rem, 8vw, 8rem);
}

.brand-bridge__identity {
  display: flex;
  align-items: center;
  gap: 1rem;
  opacity: 1;
  transform: none;
}

html[data-enhanced="true"] .brand-bridge__identity {
  opacity: 0;
  transform: translateY(0.7rem);
  transition:
    opacity 700ms var(--ease-reveal),
    transform 700ms var(--ease-reveal);
}

html[data-enhanced="true"]
  .brand-bridge[data-visible="true"]
  .brand-bridge__identity {
  opacity: 1;
  transform: none;
}

.brand-bridge__mark {
  display: grid;
  width: 2.65rem;
  height: 2.65rem;
  flex: 0 0 auto;
  place-items: center;
  background: var(--gradient-brand);
  clip-path: polygon(
    50% 0,
    59% 40%,
    100% 50%,
    59% 60%,
    50% 100%,
    41% 60%,
    0 50%,
    41% 40%
  );
}

.brand-bridge__mark i {
  display: block;
  width: 43%;
  height: 43%;
  background: #fff;
  clip-path: inherit;
}

.brand-bridge__identity > span:last-child {
  display: grid;
  gap: 0.25rem;
}

.brand-bridge__identity strong,
.brand-bridge__identity small {
  font-family: var(--font-latin);
  line-height: 1.2;
  white-space: nowrap;
}

.brand-bridge__identity strong {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.brand-bridge__identity small {
  color: var(--color-editorial-ink-soft);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.19em;
}

.brand-bridge__message {
  justify-self: end;
  color: var(--color-editorial-ink);
  font-size: clamp(2.1rem, 4.15vw, 4.25rem);
  font-weight: 650;
  letter-spacing: -0.06em;
  line-height: 1.28;
  opacity: 1;
  text-align: right;
  transform: none;
}

html[data-enhanced="true"] .brand-bridge__message {
  opacity: 0;
  transform: translateY(0.9rem);
  transition:
    opacity 850ms 100ms var(--ease-reveal),
    transform 850ms 100ms var(--ease-reveal);
}

html[data-enhanced="true"]
  .brand-bridge[data-visible="true"]
  .brand-bridge__message {
  opacity: 1;
  transform: none;
}

.brand-bridge__path {
  position: relative;
  display: block;
  height: 1rem;
  grid-column: 1 / -1;
}

.brand-bridge__path::before {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgb(36 54 47 / 8%),
    rgb(44 115 115 / 42%) 55%,
    rgb(18 175 104 / 50%)
  );
  content: "";
}

.brand-bridge__path::after {
  position: absolute;
  top: calc(50% - 0.5rem);
  right: 0;
  width: 1rem;
  height: 1rem;
  background: var(--gradient-brand);
  clip-path: polygon(
    50% 0,
    59% 40%,
    100% 50%,
    59% 60%,
    50% 100%,
    41% 60%,
    0 50%,
    41% 40%
  );
  content: "";
}

.brand-bridge__path i {
  position: absolute;
  z-index: 1;
  top: calc(50% - 1px);
  left: -7rem;
  width: 7rem;
  height: 2px;
  border-radius: var(--radius-pill);
  background: linear-gradient(
    90deg,
    transparent,
    rgb(92 182 182 / 54%),
    rgb(18 175 104 / 96%)
  );
  box-shadow: 0 0 1rem rgb(18 175 104 / 38%);
  opacity: 0;
}

.brand-bridge[data-visible="true"] .brand-bridge__path i {
  animation: sf-brand-bridge-light 2.2s 450ms var(--ease-reveal) both;
}

/* A型の基本案内：コンテナを使わず全幅で見せる */
.guide-rail {
  display: grid;
  padding: clamp(5.5rem, 8vw, 8rem) clamp(1.25rem, 5vw, 5rem);
  border-bottom: 1px solid rgb(36 54 47 / 13%);
  background: var(--color-editorial-paper-light);
  grid-template-columns: minmax(13rem, 0.8fr) minmax(0, 2.6fr);
  gap: clamp(2.5rem, 6vw, 7rem);
}

.guide-rail__intro {
  max-width: 20rem;
}

.guide-rail__intro h2 {
  color: var(--color-editorial-ink);
  font-size: clamp(2.25rem, 3.35vw, 3.7rem);
  letter-spacing: -0.045em;
  line-height: 1.35;
}

.guide-rail__list {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guide-rail__item {
  min-width: 0;
  padding: 0 clamp(1.4rem, 2.8vw, 3rem);
  border-left: 1px solid rgb(36 54 47 / 16%);
}

.guide-rail__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
  color: var(--color-editorial-mint-deep);
  font-family: var(--font-latin);
  font-weight: 760;
}

.guide-rail__number {
  font-size: clamp(1.6rem, 2.5vw, 2.7rem);
  font-weight: 350;
  letter-spacing: -0.03em;
  line-height: 0.85;
}

.guide-rail__meta svg {
  width: 2.8rem;
  height: 2.8rem;
  stroke-width: 1.25;
}

.guide-rail__item h3 {
  max-width: 12em;
  color: var(--color-editorial-ink);
  font-size: clamp(1.3rem, 1.7vw, 1.7rem);
  letter-spacing: -0.025em;
  line-height: 1.55;
}

.guide-rail__item p {
  margin-top: 0.9rem;
  color: var(--color-editorial-ink-soft);
  font-size: clamp(0.98rem, 1.1vw, 1.08rem);
  line-height: 1.9;
}