@charset "UTF-8";
/*
 * /concept/ landing page: five full-viewport sections (#c00–#c04) with
 * scroll-triggered effects driven by concept.js, which toggles the
 * state classes (.p01, .p02, .on, .off) styled here.
 */

:root {
  --color-text: #141414;
  --color-green: #2da403;
  --color-link: #41a8d8;
  --font-sans: "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, sans-serif;
}

/* ---------- reset ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border: 0;
}
ul { list-style: none; }
h1, h2, h3 { font-size: 100%; }

/* ---------- base ---------- */
html, body {
  width: 100%;
  height: 100%; /* sections are one viewport tall */
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
  color: var(--color-text);
}
a { color: var(--color-link); }

.anim { transition: all 0.2s ease-out; }
.anim4 { transition: all 0.4s ease-out; }
.anim10 { transition: all 1s ease-out; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- section frame ---------- */
.b {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}
.b h3 {
  padding-bottom: 30px;
  font-size: 48px;
  font-weight: normal;
  line-height: 1.2;
  color: var(--color-green);
}
.c {
  width: 960px;
  margin: 0 auto;
  text-align: left;
}
.hf { width: 50%; }

.link a {
  display: inline-block;
  padding: 10px;
  font-size: 14px;
  color: var(--color-green);
  text-decoration: none;
  background: rgba(230, 255, 236, 0.3);
  border: 1px solid var(--color-green);
}
.link a:hover { background: rgb(230, 255, 236); }

/* Round image crop */
.ci10 {
  width: 200px;
  overflow: hidden;
  line-height: 0;
  border-radius: 100px;
}

/* ---------- #c00 title ---------- */
#c00 {
  overflow: hidden;
  background: url(/assets/img/concept/bg01.jpg) center top / cover no-repeat;
}
#c00 h2,
#c00 p {
  font-weight: normal;
  line-height: 1.2;
  color: #fff;
  text-shadow: 0 0 5px rgba(0, 0, 0, 0.8);
}
#c00 h2 { font-size: 36px; }
#c00 p {
  padding-top: 30px;
  font-family: Helvetica, Arial;
  font-size: 24px;
  font-style: italic;
}

/* ---------- #c01 text + photo, two circles slide apart ---------- */
#c01 .c,
#c02 .c {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
#c01 .i01 { padding-bottom: 30px; }
#c01 .img {
  position: relative;
  height: 200px;
}
#c01 .img > div {
  position: absolute;
  left: 50%;
  top: -200px;
  margin-left: -100px;
  opacity: 0;
}
#c01 .img > div.p01 {
  top: 0;
  opacity: 1;
}
#c01 .img > div.p02 { margin: 0; }
#c01_a1.p02 { left: 0 !important; }
#c01_a2.p02 {
  right: 0 !important;
  opacity: 1 !important;
}
#c01 .img > div.ct {
  top: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 200px;
  height: 200px;
  overflow: hidden;
  font-size: 20px;
  line-height: 1.2;
  text-align: center;
  color: var(--color-green);
  border: 5px solid var(--color-green);
  border-radius: 100px;
}

/* ---------- #c02 falling leaves ---------- */
#c02 { background: url(/assets/img/concept/bg02.jpg) center top / cover no-repeat; }
#c02 .c {
  position: relative;
  z-index: 2;
  padding-bottom: 100px;
}
#c02 .bg {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
#c02 .bg .ev { position: absolute; }
#c02 .bg .ev .ov {
  position: absolute;
  left: 0;
  top: 0;
}
#c02 .bg .ev,
#c02 .bg .ev .nm,
#c02 .bg .ev .ov {
  animation-duration: 10s;
  animation-timing-function: ease;
  animation-iteration-count: infinite;
}
#c02 .bg .ev { animation-name: leaf-fall; }
#c02 .bg .ev .nm { animation-name: fade-out; }
#c02 .bg .ev .ov { animation-name: fade-in; }
@keyframes leaf-fall {
  from { top: 100%; }
  to { top: -212px; opacity: 1; }
}
@keyframes fade-out {
  from { opacity: 1; }
  to { opacity: 0; }
}
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}
#c02 .link { padding-top: 40px; }

/* ---------- #c03 four photos spread out ---------- */
#c03 { background: url(/assets/img/concept/bg03.jpg) center top / cover no-repeat; }
#c03 p { padding-bottom: 100px; }
#c03 .il {
  position: relative;
  width: 992px;
  height: 200px;
  margin: 0 auto;
  overflow: hidden;
}
#c03 .il li {
  position: absolute;
  left: 50%;
  top: 0;
  margin-left: -100px;
  padding: 0 24px;
  opacity: 0;
}
#c03 .il.p01 li {
  margin-left: 0;
  opacity: 1;
}
#c03 .il.p01 #c03_a1 { left: 0; }
#c03 .il.p01 #c03_a2 { left: 248px; }
#c03 .il.p01 #c03_a3 { left: 496px; }
#c03 .il.p01 #c03_a4 { left: 744px; }

/* ---------- #c04 bottle fills with capsules ---------- */
#c04 { background: #eeffe4; }
#c04 .m {
  position: relative;
  padding-top: 60px;
}

.bottle {
  position: relative;
  z-index: 2;
  width: 177px;
  height: 333px;
  margin: 0 auto;
  overflow: hidden;
}
.bottle .in {
  position: relative;
  width: 177px;
  height: 333px;
}
.bottle img.o {
  position: absolute;
  left: 0;
  top: 333px;
  z-index: 100;
  opacity: 0;
}
.bottle img.o.on {
  top: 0;
  opacity: 1;
}
.bottle img.t {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 30px;
  margin-left: -15px;
  opacity: 0;
}
.bottle img.t.on {
  bottom: 70px;
  opacity: 1;
}

.tsubu {
  position: absolute;
  left: 50%;
  bottom: 20px;
  z-index: 3;
  margin-left: -155px;
  opacity: 0;
}
.tsubu.on { opacity: 1; }

/* Ellipse "plate" under the bottle */
#c04 .bl {
  position: relative;
  width: 411px;
  height: 105px;
  margin: -87px auto 0;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 206px / 53px;
}
.shw {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
}
.shw.on {
  width: 46px;
  height: 21px;
  margin: -11px 0 0 -23px;
}
#c04 .ci {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 1;
  width: 0;
  height: 0;
  overflow: hidden;
  border-radius: 206px / 53px;
}
#c04 .ci.on {
  left: 0;
  top: 0;
  width: 411px;
  height: 105px;
}
#c04 .ci img {
  position: absolute;
  left: 50%;
  top: 0;
  margin-left: -205px;
}
#c04 .ci img#c04_a1 {
  top: 50%;
  margin-top: -53px;
}
#c04 .ci img#c04_a1.off { opacity: 0; }

#c04 .link {
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: 128px;
  opacity: 0;
}
#c04 .link.on {
  margin-left: 178px;
  opacity: 1;
}

/* ---------- section menu (right edge) ---------- */
#menu {
  position: fixed;
  right: 10px;
  top: 50%;
  z-index: 103;
  margin-top: -3em;
}
#menu li {
  padding: 5px;
  text-align: right;
}
#menu a {
  display: inline-block;
  padding: 5px 10px;
  text-align: right;
  text-decoration: none;
  border-radius: 18px;
}
#menu a:hover { background: rgba(255, 255, 255, 0.8); }
#menu .t {
  display: inline-block;
  color: #000;
  text-shadow: 0 0 2px #fff;
  opacity: 0;
}
#menu .c {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-left: 15px;
  background: #ddd;
  border-radius: 6px;
}
#menu a:hover .c { background: var(--color-green); }
#menu a:hover div { opacity: 1; }