/* ===========================
   KV Animation
   =========================== */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

.kv__hero        { animation: slideUp 0.6s ease 0.2s both; }
.kv__balloon-wrap { animation: slideUp 0.6s ease 0.5s both; }
.kv__textArea    { animation: slideUp 0.6s ease 0.4s both; }

/* ===========================
   Slide-up Animation
   =========================== */
.js-slideup {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

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

/* ===========================
   Reset & Base
   =========================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: min(16 / 750 * 100vw, 16px);
}

body {
  font-family:
    "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo,
    sans-serif;
  font-weight: 500;
  color: #333;
  background-color: #fff;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  width: auto;
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: inherit;
  font-weight: inherit;
}

p, dl dt, dl dd {
  line-height: 1.75;
}

/* ===========================
   共通レイアウト
   =========================== */
.main {
  max-width: 750px;
  position: relative;
  margin: 0 auto;
}

.colorRed {
  color: #ff0000;
}

.marker {
  background:
    linear-gradient(to right, transparent, transparent),
    linear-gradient(to right, #fcf102, #fcf102);
  background-size:
    100% 0.7em,
    100% 0.7em;
  background-position:
    100% 100%,
    0 100%;
  background-repeat: no-repeat;
}

.ta-center {
  text-align: center;
}

.font-700 {
  font-weight: 700;
}

.font-900 {
  font-weight: 900;
}

.highlight-text {
  display: inline-block;
  margin: 0.7em 0;
  font-size: 1.2em;
}

/* ===========================
   共通リンクホバー
   =========================== */
.btn-link {
  display: block;
  width: fit-content;
  position: relative;
  cursor: pointer;
}

.btn-link::before {
  content: '';
  position: absolute;
  inset: 3px;
  background: #fff;
  border-radius: 9999px;
  z-index: 0;
}

.btn-link img {
  display: block;
  position: relative;
  z-index: 1;
  transition: opacity 0.3s ease;
}

.js-slideup.is-visible .btn-link {
  animation: btn-flash 4s ease-in-out 0.5s infinite;
}

@keyframes btn-flash {
  0%, 40%, 100% { filter: brightness(1); }
  20%           { filter: brightness(1.4); }
}

.btn-link:hover img {
  opacity: 0.85;
}

/* ===========================
   Header
   =========================== */
.site-header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

/* ===========================
   KV
   =========================== */
.kv .sec__inner {
  padding-bottom: min(92 / 750 * 100vw, 92px);
}

.kv__visual {
  position: relative;
}

.kv__balloon {
  position: absolute;
  bottom: max(-17 / 750 * 100vw, -17px);
  left: 50%;
  transform: translateX(-50%);
  width: min(690 / 750 * 100vw, 690px);
}

.kv__textArea {
  font-size: min(28 / 750 * 100vw, 28px);
  margin-top: min(55 / 750 * 100vw, 55px);
}

.kv__textArea p:not(:first-of-type) {
  margin-top: min(50 / 750 * 100vw, 50px);
}

.kv__textArea .marker {
  font-size: min(34 / 750 * 100vw, 34px);
}

/* ===========================
   Problemセクション
   =========================== */
.problem {
  position: relative;
  /* background: linear-gradient(to top, #172b88 0%, #263358 88%); */
  background-image: url("../img/problem-bg.webp");
  background-size: cover;
  background-position: center;
}

.problem .sec__inner {
  position: relative;
  padding: min(80 / 750 * 100vw, 80px) min(30 / 750 * 100vw, 30px)
    min(50 / 750 * 100vw, 50px);
}

.problem__title {
  width: min(533 / 750 * 100vw, 533px);
  margin: 0 auto;
}

.problem__list {
  margin-top: min(65 / 750 * 100vw, 65px);
  display: flex;
  flex-direction: column;
  gap: min(24 / 750 * 100vw, 24px);
  background: #fff;
  padding: min(60 / 750 * 100vw, 60px) min(30 / 750 * 100vw, 30px)
    min(50 / 750 * 100vw, 50px);
}

.problem__item:not(:first-of-type) {
  margin-top: min(75 / 750 * 100vw, 75px);
}

.problem__qa {
  display: flex;
  flex-direction: column;
}

.problem__qa-question {
  position: relative;
  color: #263358;
  font-size: min(40 / 750 * 100vw, 40px);
  font-weight: 700;
  padding-left: min(150 / 750 * 100vw, 150px);
  letter-spacing: 0.01em;
  line-height: 1.4;
}

.problem__qa-question-img {
  position: absolute;
  left: 0;
  top: 0;
  width: min(120 / 750 * 100vw, 120px);
  height: min(120 / 750 * 100vw, 120px);
  object-fit: contain;
  background: #1a2960;
}

.problem__qa-question strong {
  font-weight: 900;
  font-size: min(46 / 750 * 100vw, 46px);
}

.problem__qa-image {
  margin-top: min(30 / 750 * 100vw, 30px);
}

.problem__qa-image .problem__img {
  width: 100%;
  height: auto;
}

.problem__qa-buttons {
  display: flex;
  gap: min(15 / 750 * 100vw, 15px);
  margin-top: min(30 / 750 * 100vw, 30px);
}

.problem__qa-btn {
  flex: 1;
  cursor: pointer;
}

.problem__qa-btn input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.problem__qa-btn span {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: min(10 / 750 * 100vw, 10px) 0;
  font-size: min(48 / 750 * 100vw, 48px);
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: #263358;
  background: #fff;
  transition:
    background 0.2s ease,
    color 0.2s ease;
  border: 3px solid #263358;
}

.problem__qa-btn input:checked + span {
  background: #1a2960;
  color: #fff;
}

/* ===========================
   Explainセクション
   =========================== */
.explain .sec__inner {
  padding: min(45 / 750 * 100vw, 45px) min(30 / 750 * 100vw, 30px)
    min(50 / 750 * 100vw, 50px);
    background-image: url("../img/explain-bg.webp");
    background-size: contain;
    background-position: top 25% center;
    background-repeat: no-repeat;
}

.explain__examples {
  margin-left: max(-30 / 750 * 100vw, -30px);
  margin-right: max(-30 / 750 * 100vw, -30px);
  padding: min(40 / 750 * 100vw, 40px) min(40 / 750 * 100vw, 40px) min(30 / 750 * 100vw, 30px);
}

.explain__example-heading {
  margin: 0 auto min(35 / 750 * 100vw, 35px);
  text-align: center;
  font-size: min(28 / 750 * 100vw, 28px);
}

.explain__example-detail {
  display: flex;
}

.explain__example-detail:nth-of-type(odd) {
  justify-content: flex-end;
}

.explain__example-detail:nth-of-type(even) {
  justify-content: flex-start;
}

.explain__example-detail--02 {
  margin-top: max(-30 / 750 * 100vw, -30px);
}

.explain__example-detail--03 {
  margin-top: max(-30 / 750 * 100vw, -30px);
}

.explain__example-detail--04 {
  margin-top: max(-30 / 750 * 100vw, -30px);
}

.explain__visual {
  margin-top: min(50 / 750 * 100vw, 50px);
}

.explain__example-img {
  width: min(483 / 750 * 100vw, 483px);
}

.explain__textArea--main {
  font-size: min(40 / 750 * 100vw, 40px);
}

.explain__textArea--main p {
  line-height: 1.55;
}

.explain__textArea--sub {
  font-size: min(28 / 750 * 100vw, 28px);
}

.explain__textArea--sub p {
  line-height: 1.62;
}

.explain__textArea--sub p:not(:first-of-type) {
  margin-top: min(50 / 750 * 100vw, 50px);
}

.explain__textArea--sub .colorRed {
  font-size: min(34 / 750 * 100vw, 34px);
}

.explain__textArea--normal {
  font-size: min(28 / 750 * 100vw, 28px);
}

.explain__textArea--normal p {
  line-height: 1.62;
}

.explain__textArea--normal .colorRed {
  font-size: min(28 / 750 * 100vw, 28px);
}

.explain__subtitle-wrap {
  margin-top: min(90 / 750 * 100vw, 90px);
  margin-left: max(-30 / 750 * 100vw, -30px);
  margin-right: max(-30 / 750 * 100vw, -30px);
}

.explain__difference {
  margin: min(50 / 750 * 100vw, 50px) auto min(40 / 750 * 100vw, 40px);
}

.explain__difference-figure {
  width: min(656 / 750 * 100vw, 656px);
  margin: 0 auto;
}

.explain__tonics {
  margin-top: min(30 / 750 * 100vw, 30px);
}

.explain__tonic-item--02 {
  margin-top: min(15 / 750 * 100vw, 15px);
}

.explain__tonic-item--01,
.explain__tonic-item--02 {
  position: relative;
}

.explain__tonic-note {
  display: block;
  text-align: right;
  font-size: min(16 / 750 * 100vw, 16px);
  color: #000;
}

.explain__tonic-gif {
  position: absolute;
  top: 2px;
  right: 2px;
  bottom: 2px;
  height: calc(100% - 4px);
  width: auto;
}

.explain__comment {
  margin-top: min(5 / 750 * 100vw, 5px);
}

/* ===========================
   Reasonセクション
   =========================== */
.reason {
  background-color: #fff;
}

.reason__block {
  position: relative;
  z-index: 1;
  color: #fff;
  background-color: #040404;
  padding: 0 min(30 / 750 * 100vw, 30px)
    min(30 / 750 * 100vw, 30px);
  margin-top: max(-915 / 750 * 100vw, -915px);
}

.reason__examples {
  display: flex;
  gap: min(30 / 750 * 100vw, 30px);
  text-align: center;
}

.reason__example-term {
  font-size: min(35 / 750 * 100vw, 35px);
  background-color: #fff;
  color: #000;
  padding: min(10 / 750 * 100vw, 10px) 0;
}

.reason__example-desc {
  font-size: min(28 / 750 * 100vw, 28px);
}

.reason__example-note {
  font-size: min(16 / 750 * 100vw, 16px);
  color: #fff;
  text-align: right;
}

.reason__research {
  margin-top: min(50 / 750 * 100vw, 50px);
}

.reason__subtitle-wrap .reason__subtitle {
  filter: brightness(1.6) drop-shadow(0 0 8px rgba(255, 255, 255, 1))
    drop-shadow(0 0 20px rgba(255, 255, 255, 1))
    drop-shadow(0 0 40px rgba(255, 255, 255, 0.8));
}

.reason__explanation {
  padding: min(45 / 750 * 100vw, 45px) min(30 / 750 * 100vw, 30px)
    min(65 / 750 * 100vw, 65px);
}

.reason__graphArea {
  padding: min(30 / 750 * 100vw, 30px) min(30 / 750 * 100vw, 30px)
    min(50 / 750 * 100vw, 50px);
}

.reason__graph-title {
  font-size: min(40 / 750 * 100vw, 40px);
}

.reason__graph {
  margin-top: min(45 / 750 * 100vw, 45px);
}

.reason__textArea {
  font-size: min(28 / 750 * 100vw, 28px);
}

.reason__textArea .marker {
  font-size: min(34 / 750 * 100vw, 34px);
}

.reason__textArea--01 {
  margin-top: min(20 / 750 * 100vw, 20px);
}

.reason__textArea--02 {
  margin-top: min(40 / 750 * 100vw, 40px);
}

.reason__improvement {
  margin-top: min(45 / 750 * 100vw, 45px);
}

.reason__examiner {
  background-color: #dfe5f5;
  padding: min(90 / 750 * 100vw, 90px) min(30 / 750 * 100vw, 30px)
    min(80 / 750 * 100vw, 80px);
}

.reason__examiner-title {
  font-size: min(36 / 750 * 100vw, 36px);
  color: #263358;
}

.reason__examiner-title strong {
  font-size: min(50 / 750 * 100vw, 50px);
}

.reason__examiner-desc {
  text-align: center;
  color: #263358;
  font-size: min(28 / 750 * 100vw, 28px);
  margin-top: min(20 / 750 * 100vw, 20px);
}

.reason__examiner-photo {
  margin-top: min(35 / 750 * 100vw, 35px);
}

.reason__comments {
  background-color: #eff2fa;
  padding: min(70 / 750 * 100vw, 70px) min(30 / 750 * 100vw, 30px)
    min(50 / 750 * 100vw, 50px);
  margin: min(50 / 750 * 100vw, 50px) max(-30 / 750 * 100vw, -30px);
}

.reason__comment-item:not(:first-of-type) {
  margin-top: min(50 / 750 * 100vw, 50px);
}

.reason__point-item {
  width: min(644 / 750 * 100vw, 644px);
  margin: 0 auto;
}

.reason__point-item--02 {
  margin-top: min(40 / 750 * 100vw, 40px);
}

.reason__point-item--03 {
  position: relative;
  margin-top: min(140 / 750 * 100vw, 140px);
}

.reason__point-item--03::before {
  position: absolute;
  top: max(-100 / 750 * 100vw, -100px);
  left: 50%;
  transform: translateX(-50%);
  content: "";
  display: block;
  width: min(99 / 750 * 100vw, 99px);
  height: min(62 / 750 * 100vw, 62px);
  background-image: url("../img/reason-arrow.webp");
  background-size: contain;
  background-repeat: no-repeat;
}

.reason__comment {
  margin-top: min(50 / 750 * 100vw, 50px);
}

/* ===========================
   Recommendセクション
   =========================== */
.recommend__block {
  padding: 0 min(30 / 750 * 100vw, 30px) min(45 / 750 * 100vw, 45px);
}

.recommend__items-block {
  margin-top: max(-145 / 750 * 100vw, -145px);
  overflow-x: clip;
}

.recommend__items-title {
  z-index: 1;
  position: relative;
  margin-bottom: max(-40 / 750 * 100vw, -40px);
}

.recommend__items {
  position: relative;
  display: flex;
  gap: min(30 / 750 * 100vw, 30px);
  background-color: #dadada;
  padding: min(60 / 750 * 100vw, 60px) min(30 / 750 * 100vw, 30px) min(50 / 750 * 100vw, 50px);
}

.recommend__items::after {
  content: "";
  position: absolute;
  z-index: 1;
  bottom: max(-124 / 750 * 100vw, -124px);
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: min(450 / 750 * 100vw, 450px) solid transparent;
  border-right: min(450 / 750 * 100vw, 450px) solid transparent;
  border-top: min(149 / 750 * 100vw, 149px) solid #dadada;
  filter: drop-shadow(0px 6px 6px rgba(0, 0, 0, 0.1));
  clip-path: inset(0 -100px -100px -100px);
}

.recommend__item {
  position: relative;
}

.recommend__cta {
  width: min(290 / 750 * 100vw, 290px);
  position: absolute;
  bottom: min(30 / 750 * 100vw, 30px);
  left: 50%;
  transform: translateX(-50%);
  box-shadow: -6px 6px 6px 0 rgba(7, 0, 2, 0.15);
  border-radius: min(72 / 750 * 100vw, 72px);
}

.recommend__scene-item {
  background-color: #dcf7ff;
  padding: min(45 / 750 * 100vw, 45px) min(30 / 750 * 100vw, 30px)
    min(45 / 750 * 100vw, 45px);
  margin-left: max(-30 / 750 * 100vw, -30px);
  margin-right: max(-30 / 750 * 100vw, -30px);
}

.recommend__scene-title {
  font-size: min(50 / 750 * 100vw, 50px);
}

.recommend__scene-media {
  margin-top: min(10 / 750 * 100vw, 10px);
}

.recommend__scene-desc {
  font-size: min(36 / 750 * 100vw, 36px);
}

.recommend__scene-note {
  font-size: min(16 / 750 * 100vw, 16px);
  color: #000;
  text-align: right;
  line-height: 1.8;
}

.recommend__detail {
  margin-top: min(40 / 750 * 100vw, 40px);
}

.recommend__detail-term {
  font-size: min(40 / 750 * 100vw, 40px);
}

.recommend__detail-media {
  margin-top: min(40 / 750 * 100vw, 40px);
}

.recommend__detail-desc {
  font-size: min(28 / 750 * 100vw, 28px);
  margin-top: min(30 / 750 * 100vw, 30px);
}

.recommend__detail + .recommend__detail {
  margin-top: min(80 / 750 * 100vw, 80px);
}

.recommend__research-item {
  margin-top: min(30 / 750 * 100vw, 30px);
}

.recommend__checks-block {
  background-color: #9d152d;
  color: #fff;
  padding: min(140 / 750 * 100vw, 140px) min(30 / 750 * 100vw, 30px)
    min(25 / 750 * 100vw, 25px);
}

.recommend__checks-title {
  font-size: min(36 / 750 * 100vw, 36px);
}

.recommend__difference-figure {
  margin-top: min(10 / 750 * 100vw, 10px);
  position: relative;
}

.recommend__difference-link {
  position: absolute;
  top: 0;
  display: block;
  width: 50%;
  height: 39.7%;
  overflow: hidden;
  transition: background-color 0.2s ease;
}

.recommend__difference-link::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.45) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: skewX(-20deg);
}

.recommend__difference-link.is-shimmer::after {
  animation: shimmer 0.8s ease 0.3s forwards;
}

@keyframes shimmer {
  0%   { left: -100%; }
  100% { left: 150%; }
}

.recommend__difference-link:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

.recommend__difference-link--01 {
  left: 0;
}

.recommend__difference-link--02 {
  right: 0;
}

/* ===========================
   CTAセクション
   =========================== */
.cta__visual {
  position: relative;
}

.cta__regulation-link {
  width: min(620 / 750 * 100vw, 620px);
  position: absolute;
  bottom: min(95 / 750 * 100vw, 95px);
  left: 50%;
  transform: translateX(-50%);
  transition: filter 0.2s ease;
}

.cta__regulation-link:hover {
  filter: brightness(1.2);
}

.cta__textArea {
  font-size: min(46 / 750 * 100vw, 46px);
  padding: min(75 / 750 * 100vw, 75px) min(30 / 750 * 100vw, 30px) min(90 / 750 * 100vw, 90px);
}

.cta__btn-block {
  background-color: #ba1f13;
  padding: min(90 / 750 * 100vw, 90px) min(75 / 750 * 100vw, 75px)
    min(100 / 750 * 100vw, 100px);
}

.cta__btn-link {
  margin-top: min(70 / 750 * 100vw, 70px);
}