@charset "UTF-8";

:root {
  --bg: #fefefd;
  --text: #171717;
  --muted-line: #e7e4df;
  --accent: #e35b2a;

  --symbol-w: clamp(138px, 12vw, 190px);
  --k-duration: 1.35s;
  --line-duration: .72s;
  --dot-duration: .4s;
  --word-duration: .85s;
  --ease-k: cubic-bezier(.22,.78,.20,1);
  --ease-soft: cubic-bezier(.22,.74,.20,1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  background: var(--bg);
}

body {
  overflow-x: hidden;
  overflow-y: auto;
  color: var(--text);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Helvetica Neue",
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    YuGothic,
    Arial,
    sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* =========================================================
   FIRST VIEW
========================================================= */

.fv {
  position: relative;
  width: 100%;
  height: 100svh;
  min-height: 560px;
  overflow: hidden;
  background: var(--bg);
}

.logo-stage {
  position: absolute;
  top: calc(50% - 40px);
  left: 50%;
  width: min(78vw, 560px);
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.symbol {
  position: relative;
  width: var(--symbol-w);
  aspect-ratio: 175 / 310;
}

.part {
  position: absolute;
  display: block;
  object-fit: contain;
  max-width: none;
  will-change: transform, opacity;
}

/* K完成後に、下端から上へ伸びるCSS線 */
.line-reveal {
  position: absolute;
  left: 39.4%;
  top: 19%;
  width: 1.4px;
  height: 38.2%;
  background: linear-gradient(
    to top,
    rgba(222, 76, 26, 1) 0%,
    rgba(232, 92, 29, 1) 100%
  );
  transform-origin: bottom center;
  transform: scaleY(0);
  opacity: 1;
  will-change: transform;
  transition: transform var(--line-duration) var(--ease-soft);
}

.part-dot {
  left: 45.714%;
  top: 4.516%;
  width: 18.286%;
  height: 10.968%;
  opacity: 0;
  transform: translateY(10px) scale(.7);
  transition:
    opacity var(--dot-duration) ease,
    transform var(--dot-duration) var(--ease-soft);
}

.part-vertical {
  left: 2.857%;
  top: 56.452%;
  width: 32.571%;
  height: 39.677%;
  opacity: 1;
  transform: translate(-42vw, 31vh) rotate(-12deg);
  transition: transform var(--k-duration) var(--ease-k);
}

.part-diagonal {
  left: 33.143%;
  top: 46.774%;
  width: 64%;
  height: 30%;
  opacity: 1;
  transform: translate(39vw, -26vh) rotate(28deg);
  transition: transform var(--k-duration) var(--ease-k);
}

.part-square {
  left: 62.857%;
  top: 79.032%;
  width: 31.429%;
  height: 19.355%;
  opacity: 1;
  transform: translate(36vw, 30vh) rotate(36deg);
  transition: transform var(--k-duration) var(--ease-k);
}

.wordmark {
  display: block;
  margin-top: clamp(22px, 3vh, 38px);
  opacity: 0;
  transform: translateY(9px);
  transition:
    opacity var(--word-duration) ease,
    transform var(--word-duration) var(--ease-soft);
}

.wordmark-text {
  color: #171717;
  font-size: clamp(26px, 2.35vw, 34px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: .46em;
  padding-left: .46em;
  text-transform: lowercase;
  white-space: nowrap;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Helvetica Neue",
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    YuGothic,
    Arial,
    sans-serif;
}

.fv.is-assemble .part-vertical,
.fv.is-assemble .part-diagonal,
.fv.is-assemble .part-square {
  transform: translate(0, 0) rotate(0deg);
}

.fv.is-line .line-reveal {
  transform: scaleY(1);
}

.fv.is-dot .part-dot {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.fv.is-wordmark .wordmark {
  opacity: 1;
  transform: translateY(0);
}

/* 小さく、静かなスクロールサイン */
.scroll-sign {
  position: absolute;
  right: clamp(24px, 3vw, 48px);
  bottom: clamp(24px, 3vw, 44px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transition: opacity .55s ease .35s;
}

.fv.is-wordmark .scroll-sign {
  opacity: .68;
}

.scroll-sign span {
  writing-mode: vertical-rl;
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: lowercase;
  color: var(--accent);
  font-weight: 500;
}

.scroll-sign i {
  display: block;
  width: 1px;
  height: 46px;
  background: var(--accent);
  transform-origin: top;
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(.35); opacity: .35; }
  50% { transform: scaleY(1); opacity: 1; }
}

/* =========================================================
   SECOND VIEW / BRAND STORY
========================================================= */

.brand-story {
  position: relative;
  background: var(--bg);
  border-top: 1px solid rgba(30, 30, 30, .055);
}

.brand-story__inner {
  width: min(100% - 72px, 980px);
  margin: 0 auto;
  padding: clamp(130px, 15vw, 210px) 0 clamp(150px, 18vw, 240px);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.brand-block {
  width: min(100%, 760px);
  padding: 68px 24px 64px;
  border-bottom: 1px solid var(--muted-line);
  margin: 0 auto;
  text-align: center;
}

.brand-block:first-child {
  padding-top: 0;
}

.brand-block:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.brand-block__label {
  margin: 0 0 28px;
  text-align: center;
  color: var(--accent);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .14em;
  line-height: 1;
  text-transform: lowercase;
}

.brand-block__title {
  margin: 0 auto 48px;
  text-align: center;
  max-width: 18ch;
  font-size: clamp(26px, 2.6vw, 36px);
  font-weight: 400;
  letter-spacing: .08em;
  line-height: 1.85;
}

.brand-block__body {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
  width: 100%;
}


.brand-block__text {
  margin: 0 auto;
  max-width: 42ch;
  width: 100%;
  text-align: center;
  color: #252525;
  font-size: clamp(15px, 1.3vw, 18px);
  font-weight: 500;
  letter-spacing: .03em;
  line-height: 2.05;
  text-wrap: pretty;
  word-break: keep-all;
  overflow-wrap: normal;
}

/* セカンドビューは少しだけ静かに出す */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 1s var(--ease-soft),
    transform 1s var(--ease-soft);
}

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

/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 750px) {
  :root {
    --symbol-w: clamp(122px, 37vw, 154px);
    --k-duration: 1.25s;
  }

  .logo-stage {
    top: calc(50% - 24px);
    width: min(84vw, 420px);
    transform: translate(-50%, -50%);
  }

  .part-vertical {
    transform: translate(-38vw, 30vh) rotate(-12deg);
  }

  .part-diagonal {
    transform: translate(34vw, -22vh) rotate(24deg);
  }

  .part-square {
    transform: translate(33vw, 29vh) rotate(30deg);
  }

  .symbol {
    transform: none;
  }

  .wordmark {
    margin-top: 14px;
  }

  .wordmark-text {
    font-size: clamp(20px, 5.6vw, 27px);
    letter-spacing: .36em;
    padding-left: .36em;
  }

  .scroll-sign {
    right: 16px;
    bottom: 18px;
  }

  .brand-story__inner {
    width: 100%;
    max-width: 100%;
    padding: 80px 24px 110px;
  }

  .brand-block {
    width: 100%;
    max-width: 100%;
    padding: 40px 0 38px;
    margin: 0 auto;
  }

  .brand-block__label {
    margin-bottom: 18px;
    font-size: 13px;
    letter-spacing: .16em;
    text-align: center;
  }

  .brand-block__title {
    width: 100%;
    max-width: none;
    margin: 0 auto 28px;
    font-size: clamp(20px, 8vw, 28px);
    line-height: 1.55;
    letter-spacing: .04em;
    text-align: center;
    word-break: keep-all;
  }

  .brand-block__body {
    width: 100%;
    max-width: 100%;
    gap: 18px;
    align-items: stretch;
  }

  .brand-block__text {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
    font-size: 14px;
    line-height: 1.95;
    letter-spacing: .015em;
    font-weight: 400;
    text-align: left;
    word-break: keep-all;
    overflow-wrap: normal;
    text-wrap: pretty;
  }
}

/* =========================================================
   REDUCED MOTION
========================================================= */

@media (prefers-reduced-motion: reduce) {
  .line-reveal {
    transform: scaleY(1) !important;
    transition: none !important;
  }

  .part,
  .wordmark,
  .reveal {
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
  }

  .scroll-sign {
    display: none;
  }
}