/* ============================================================
   Reset CSS (簡易版)
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-size: 16px;
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, Arial, Helvetica, sans-serif;
  color: #222222;
  background: #fff;
  line-height: 1.7;
}
@font-face {
  font-family: 'Roboto';
  src: url('../font/Roboto-Black.ttf') format('truetype');
  font-weight: 900; /* Black = 900 */
  font-display: swap;
}
@font-face {
  font-family: 'Montserrat';
  src: url('../font/Montserrat-SemiBold.ttf') format('truetype');
  font-weight: 600; /* SemiBold = 600 */
  font-display: swap;
}

@font-face {
  font-family: 'Montserrat';
  src: url('../font/Montserrat-Bold.ttf') format('truetype');
  font-weight: 700;
  font-display: swap;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}
a {
  text-decoration: none;
  color: inherit;
}
ul, ol {
  list-style: none;
}
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}
.sp_only {
  display: none;
}

/* ============================================================
   CSS Variables
   ============================================================ */
:root {
  --blue-primary: #016FBC;
  --blue-dark: #004E8C;
  --blue-light-bg: #EFF6FC;
  --blue-mid: #1E7ACC;
  --white: #ffffff;
  --text-dark: #000;
  --text-mid: #555555;
  --text-light: #888888;
  --border-light: #DDEAF5;
  --max-width: 1440px;
  --Xlarge-width: 1180px;
  --large-width: 1060px;
  --middle-width: 960px;
  --section-padding: 80px 20px;
  --section-padding-sp: 56px 20px;
  --section-padding-top-bottom: 80px 0;
  --section-padding-left-right: 0 20px;
  --section-padding-top-bottom-sp: 56px 0;
  --section-padding-left-right-sp: 0 20px;
  --font-roboto: 'Roboto', sans-serif;
  --font-montserrat: 'Montserrat', sans-serif;
}

/* ============================================================
   共通ボタン
   ============================================================ */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 700;
  text-align: center;
  transition: opacity 0.2s, background 0.2s, ease 0.2s;
  cursor: pointer;
}
.btn:hover { 
  opacity: 0.85;
  transform: scale(1.05);
}

.btn--blue {
  background: linear-gradient(135deg, #0070BD 3.54%, #62A7D5 98.99%);
  color: #fff;
  border: 2px solid #fff;
}
.btn--outline-blue {
  background: #fff;
  color: var(--blue-primary);
  border: 2px solid var(--blue-primary);
}
.btn--white {
  background: #fff;
  color: var(--blue-primary);
  border: 2px solid #fff;
}
.btn--white-outline {
  background: transparent;
  color: #fff;
  border: 2px solid #fff;
}
.btn--blue-outline {
  background: var(--blue-mid);
  color: #fff;
  border: 2px solid var(--blue-mid);
  border-radius: 6px;
  padding: 10px 24px;
}
.btn--sm {
  padding: 14px 30px;
  font-size: 1rem;
}

.triangle-bottom {
  position: relative;
}

/* コンテンツの後に三角形を追加 */
.triangle-bottom::after {
  content: '';
  position: absolute;
  top: calc(100% - 1px); /* コンテンツの下に配置 */
  left: 0;
  width: 100%; /* コンテンツ幅に合わせる */
  height: 100px; /* 三角形の高さ */
  background-color: var(--blue-light-bg); /* 三角形の色 */
  /* 三角形の形を定義 (左上、右上、中央下) */
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

/* ============================================================
   共通セクションヘッダー
   ============================================================ */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header__diamond {
  display: inline-block;
  width: 12px;
  height: 12px;
  background: var(--blue-primary);
  background-image: linear-gradient(90deg, #0070BD, #62A7D5);
  border-radius: 2px;
  transform: rotate(45deg);
  margin-bottom: 16px;
}
.section-header__title {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.35;
}
.section-header__title--left {
  text-align: left;
}
.section-header__sub {
  font-size: 16px;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
}
.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: start;  
  justify-content: space-between;
}
.header__logo {
  margin: 40px 0 0 50px;
}
.header__nav {
  position: fixed;
  top: 20px;       /* 上からの位置 */
  right: 20px;
  display: flex;
  gap: 12px;
  /* align-items: center;*/
  z-index: 100;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background: url(../img/index/bg_hero.png) no-repeat right top;
  background-size: auto 100%;
  max-height: 800px;
  margin-top: -130px;
  padding: 130px 0 100px;
}
.hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 40px;
}
.hero__content {
  flex: 1;
  min-width: 0;
}
.hero__title {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--blue-primary);
  line-height: 1.2;
  margin: 84px 0 0 150px;
}
.hero__lead {
  font-size: 20px;
  margin-bottom: 32px;
  line-height: 1.8;
  margin: 40px 0 0 150px;
}
.hero__btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 60px 0 0 150px;
}

/* ============================================================
   FASTch STATS
   ============================================================ */
.fastch-stats {
  margin-top: 100px;
  padding: var(--section-padding);
  overflow-x: clip;
}
.fastch-stats__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
  position: relative;
}
.fastch-stats__inner::before {
  content: "";
  width: 453px;
  height: 285px;
  position: absolute;
  top: -50px;
  left: -320px;
  z-index: 0;
  background: url(../img/index/bg01.svg) no-repeat center / contain;
}
.fastch-stats__inner::after {
  content: "";
  width: 368px;
  height: 463px;
  position: absolute;
  top: -50px;
  right: -310px;
  z-index: 0;
  background: url(../img/index/bg02.svg) no-repeat center / contain;
}
.fastch-stats__logo-wrap {
  text-align: center;
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}
.fastch-stats__logo {
  width: auto;
  margin: 0 auto 16px;
}
.fastch-stats__subtitle {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.6;
}
.fastch-stats__highlight {
  background: var(--blue-primary);
  color: #fff;
  margin-right: 5px;
  padding: 4px 10px;
}
.fastch-stats__text {
  font-size: 28px;
}
.fastch-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  position: relative;
  z-index: 1;
}
.fastch-stats__item {
  background: #fff;
  border: 1px solid var(--blue-primary);
  border-radius: 12px;
  line-height: 1;
  padding: 24px 10px;
  text-align: center;
}
.fastch-stats__title {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  margin-bottom: 5px;
}
.fastch-stats__icon {
  display: block;
}
.fastch-stats__text {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80%;
}
.fastch-stats__label {
  font-size: 20px;
  font-weight: 600;;
}
.fastch-stats__num {
  font-family: var(--font-roboto);
  font-weight: 900;
  font-size: 64px;
  color: var(--blue-primary);
  line-height: 1;
  letter-spacing: -.04em;
}
.fastch-stats__unit {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0;
  margin: 0 3px;
}
.fastch-stats__peak {
  font-family: var(--font-roboto);
  font-weight: 900;
  font-size: 48px;
  color: var(--blue-primary);
  line-height: 1.8rem;
}
.fastch-stats__peaks__unit {
  font-size: 18px;
  font-weight: 600;
  margin: 0 3px 5px;
}
.fastch-stats__peak strong {
  display: block;
}

/* ============================================================
   ターゲット層
   ============================================================ */
.targets {
  padding: var(--section-padding);
  padding-bottom: 0;
}
.targets__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
}
.targets__block {
  display: grid;
  grid-template-columns: 1fr 1.28fr;
  gap: 48px;
  align-items: start;
  margin-bottom: 64px;
}
.targets__block--img-left {
  direction: ltr;
}
.targets__block--img-right {
  grid-template-columns: 1.28fr 1fr;
}
.targets__block--img-right .targets__img-wrap {
  order: 2;
}
.targets__block--img-right .targets__text-wrap {
  order: 1;
}
.targets__img-wrap img {
  object-fit: cover;
}
.targets__tag {
  font-family: var(--font-montserrat);
  font-size: 12px;
  color: var(--blue-mid);
  font-weight: 600;
  margin-bottom: 8px;
}
.targets__title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}
.targets__text {
  font-size: 16px;
  line-height: 1.85;
  text-align: justify;
}

/* ============================================================
   CTA バナー（資料請求）
   ============================================================ */
.cta-banner {
  color: #fff;
  text-align: center;
  padding: 0 20px 100px;
}
.cta-banner__inner {
  background: linear-gradient(135deg, #0070BD 3.54%, #62A7D5 98.99%);
  border-radius: 20px;
  max-width: var(--large-width);
  padding: 60px 24px;
  margin: 0 auto;
}
.cta-banner__title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-banner__text {
  font-size: 16px;
  margin-bottom: 28px;
  line-height: 1.7;
}

/* ============================================================
   FASTチャンネルとは？
   ============================================================ */
.about-fast {
  background: var(--blue-light-bg);
  padding: var(--section-padding);
  overflow-x: clip;
}
.about-fast__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
  position: relative;
}
.about-fast__inner::before {
  content: "";
  width: 135px;
  height: 191px;
  position: absolute;
  top: -140px;
  right: -170px;
  z-index: 0;
  background: url(../img/index/bg04.svg) no-repeat center / contain;
}
.about-fast__body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-fast .section-header__title::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  background-image: linear-gradient(90deg, #0070BD, #62A7D5);
  border-radius: 2px;
  transform: rotate(45deg);
  margin: 0 20px 0 0;
  vertical-align: 0.2em;
}
.about-fast__logo-box {
  background: #fff;
  border-radius: 20px;
  padding: 24px;
  margin-bottom: 20px;
}
.about-fast__logo {
  margin: 0 auto 12px;
}
.about-fast__screenshot {
  width: 100%;
  margin-bottom: 12px;
}
.about-fast__partners {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.about-fast__partners img {
  width: auto;
  margin: 0 auto;
}
.about-fast__desc {
  text-align: left;
  line-height: 1.85;
}
.about-fast__stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}
.about-fast__stat-item {
  background-color: #fff;
  border: 1px solid var(--blue-primary);
  border-radius: 10px;
  padding: 18px 10px;
  text-align: center;
}
.about-fast__stat-label {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.about-fast__stat-num {
  font-size: 48px;
  font-family: var(--font-roboto);
  font-weight: 900;
  color: var(--blue-primary);
  line-height: 1;
}
.about-fast__stat-num span {
  font-size: 24px;
  font-weight: 600;
  color: var(--blue-primary);
}
.about-fast__graph {
  background: var(--blue-light-bg);
  border-radius: 12px;
  padding: 20px;
}
.about-fast__graph-title {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.about-fast__svg {
  width: 100%;
}
.about-fast__graph-legend {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.75rem;
  margin-top: 8px;
}
.legend--blue { color: #1E7ACC; }
.legend--orange { color: #E8803A; }
.legend--green { color: #4CAF50; }


/* ============================================================
   課題セクション
   ============================================================ */
.issues {
  background: var(--blue-light-bg);
  padding: var(--section-padding);
}
.issues__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
}
.issues__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.issues__card {
  background: #fff;
  border-radius: 12px;
  padding: 28px 24px;
  box-shadow: 0 2px 12px rgba(0,100,180,0.06);
}
.issues__card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
  line-height: 1.5;
}
.issues__card-text {
  font-size: 16px;
  line-height: 1.75;
}

/* ============================================================
   Vポイント連動
   ============================================================ */
.vpoint {
  background: var(--blue-light-bg);
  padding: var(--section-padding);
}
.vpoint__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
}
.vpoint__header__title {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: center;
}
.vpoint__img {
  width: 100%;
}
.vpoint__title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.4;
}
.vpoint__text {
  line-height: 1.85;
  margin-bottom: 28px;
}
.vpoint__cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin-top: 30px;
}
.vpoint__card {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 3;
  align-items: center;
  background: #fff;
  border-radius: 10px;
  padding: 18px 10px;
  border: 1px solid var(--blue-primary);
  text-align: center;
}
.vpoint__card strong {
  display: block;
}
.vpoint__card-tag {

  font-size: 18px;
  font-weight: 600;
  margin-bottom: 4px;
}
.vpoint__card-label {
  font-size: 20px;
  font-weight: 600;
  color: var(--blue-primary);
}
.vpoint__card-num {
  font-family: var(--font-roboto);
  font-weight: 900;
  font-size: 52px;
  color: var(--blue-primary);
  line-height: 1;
}
.vpoint__card-num span {
  font-size: 32px;
  font-weight: 600;
}
.vpoint__card-highlight {
  font-size: 32px;
  font-weight: 600;
  color: var(--blue-primary);
  margin-top: 2px;
}

/* ============================================================
   チャンネルラインナップ
   ============================================================ */
.channels {
  background: var(--blue-light-bg);
  padding: var(--section-padding);
  overflow-x: clip;
}
.channels__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
  text-align: center;
}
.channels__content {
  display: grid;
  grid-template-columns: 1.28fr 1fr;
  gap: 48px;
  align-items: center;
}
.channels__header--left {
    direction: rtl;
}
.channels__header--left > * {
  direction: ltr;
}
.channels__title {
  font-size: 23px;
  font-weight: 600;
  margin-bottom: 16px;
  text-align: left;
}
.channels__text {
  line-height: 1.85;
  margin-bottom: 24px;
  text-align: left;
}
.channels__badge {
  position: relative;
  display: inline-block;
  background: var(--blue-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 8px 20px;
  border-radius: 50px;
  margin-bottom: 24px;
}
.channels__badge::before {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -7px;
  border: 7px solid transparent;
  border-top: 12px solid var(--blue-primary);
}
.channels__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.channels__item {
  border-radius: 8px;
  padding: 14px 12px;
  font-size: 18px;
  font-weight: 600;
  background: #fff;
  text-align: center;
}

/* ============================================================
   広告メニュー
   ============================================================ */
.ad-menu {
  background: #fff;
  padding: var(--section-padding);
  overflow-x: clip;
}
.ad-menu__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
  position: relative;
}
.ad-menu__inner::before {
  content: "";
  width: 185px;
  height: 215px;
  position: absolute;
  top: -130px;
  left: -190px;
  z-index: 0;
  background: url(../img/index/bg03.svg) no-repeat center / contain;
}
.ad-menu__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.ad-menu__card {
  border: 1.5px solid var(--blue-primary);
  border-radius: 14px;
  padding: 32px 10px;
}
/* 
.ad-menu__card--featured {
  border-color: var(--blue-primary);
  box-shadow: 0 4px 20px rgba(0,100,180,0.12);
}
*/
.ad-menu__card-name {
  font-size: 20px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 16px;
}
.ad-menu__card-price {
  font-size: 50px;
  font-weight: 600;
  color: var(--blue-primary);
  text-align: center;
  line-height: 1;
  margin-bottom: 12px;
}
.ad-menu__card-unit {
  font-size: 24px;
  font-weight: 600;
}
.ad-menu__card-period {
  text-align: center;
  margin-bottom: 20px;
  padding-bottom: 20px;
}
.ad-menu__card-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: fit-content;
  margin: 0 auto;
}
.ad-menu__card-list li {
  font-size: 14px;
  padding-left: 26px;
  position: relative;
  line-height: 1.5;
}
.ad-menu__card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  width: 20px;
  height: 20px;
  background-image: url("../img/index/icon_check.svg");
  background-size: contain;
}

/* ============================================================
   オプションメニュー
   ============================================================ */
.options {
  background: var(--blue-light-bg);
  padding: var(--section-padding-top-bottom);
}
.options__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--section-padding-left-right);
}
.options__slider-wrap {
  position: relative;
  overflow-x: clip;
  width: 100%;
  visibility: hidden;
}
.splide__list {
  gap: 0 !important;
}

.splide__slide {
  width: 290px !important;
  flex-shrink: 0;
}
.options__slide img {
  width: 100%;
  height: auto;
  object-fit: cover;
  margin-bottom: 14px;
}
.options__slide-title {
  font-size: 20px;
  font-weight: 700;
  margin: 15px 0 8px;
}
.options__slide-text {
  font-size: 0.85rem;
  line-height: 1.7;
}
.options__slider-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 28px;
}
.options__prev,
.options__next {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 2px solid var(--blue-primary);
  background: #fff;
  color: var(--blue-primary);
  font-size: 20px;
  transition: background 0.2s, color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.options__prev:hover,
.options__next:hover {
  background: var(--blue-primary);
  color: #fff;
}
.options__prev.is-disabled,
.options__next.is-disabled {
  opacity: 0.4;
  pointer-events: none;
}

.splide__arrow {
  display: none;
}

/* ============================================================
   事例
   ============================================================ */
.case-study {
  background: #fff;
  padding: var(--section-padding);
  overflow-x: clip;
}
.case-study__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
}
.case-study__header {
  display: grid;
  grid-template-columns: 1.28fr 1fr;
  gap: 48px;
  align-items: center;
}
.case-study__label {
  position: relative;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 20px;
}
.case-study__label::before {
    content: "";
    display: inline-block;
    width: 12px;
    height: 12px;
    background-image: linear-gradient(90deg, #0070BD, #62A7D5);
    border-radius: 2px;
    transform: rotate(45deg);
    margin: 0 10px 0 0;
}
.case-study__client {
  color: var(--blue-mid);
  font-weight: 600;
  margin-bottom: 12px;
}
.case-study__title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 24px;
  line-height: 1.5;
}
.case-study__header p:has(.btn.btn--blue) {
  margin-top: 40px;
}
.case-study__body {
}
.case-study__imgs {
}
.case-study__imgs img {
  width: 100%;
}
.case-study__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 10px;
}
.case-study__stat {
  background: #fff;
  border-radius: 10px;
  padding: 20px 8px;
  text-align: center;
  border: 1px solid var(--blue-primary);
}
.case-study__stat-label {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
}
.case-study__stat-num {
  font-family: var(--font-roboto);
  font-weight: 900;
  font-size: 72px;
  color: var(--blue-primary);
  line-height: 1;
}
.case-study__stat-num span {
  font-size: 24px;
  font-weight: 600;
}

/* ============================================================
   配信までの流れ
   ============================================================ */
.flow {
  background: var(--blue-light-bg);
  padding: var(--section-padding);
  overflow-x: clip;
}
.flow__inner {
  max-width: var(--Xlarge-width);
  margin: 0 auto;
}
.flow__steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  justify-content: center;
  position: relative;
}
.flow__steps::before {
  content: "";
  width: 80%;
  border-top: solid 1px var(--blue-primary) ;
  position: absolute;
  top: calc(170px / 2);
  z-index: 1;
}
.flow__step {
  flex: 1;
  text-align: left;
  padding: 0 12px;
  z-index: 2;
}
.flow__step-icon {
  width: 170px;
  height: 170px;
  display: block;
  margin: 0 auto;
}
.flow__step-circle {
  width: 100%;
  padding-top: 100%;
  border-radius: 50%;
  background-color: #fff;
  border: solid 2px var(--blue-primary);
  position: relative;
}
.flow__step-icon img {
  margin: auto;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}
.flow__step-content {
  margin-top: 20px;
}
.flow__step-num {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 12px;
  color: var(--blue-primary);
  line-height: 1;
}
.flow__step-num span {
  font-size: 18px;
  font-weight: 600;
  line-height: 1;
  margin-left: 4px;
}
.flow__step-title {
  font-size: 18px;
  font-weight: 600;
  margin-top: 4px;
}
.flow__step-text {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 10px;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  background: #fff;
  padding: var(--section-padding);
}
.faq__inner {
  max-width: var(--middle-width);
  margin: 0 auto;
}
.faq__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--blue-light-bg);
  border-radius: 10px 10px 0 0;
  text-align: left;
  font-weight: 600;
}
.faq__q-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: solid 1px var(--blue-primary);
  background: #fff;
  color: var(--blue-primary);
  font-family: var(--font-montserrat);
  font-weight: 700;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.faq__q-text {
  flex: 1;
}
.faq__chevron {
  font-size: 0.75rem;
  color: var(--blue-primary);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq__answer {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 0 24px 20px;
  background: var(--blue-light-bg);
  border-radius: 0 0 10px 10px;
  text-align: left;
}
.faq__answer.is-open {
  display: flex;
}
.faq__a-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--blue-mid);
  color: #fff;
  font-family: var(--font-montserrat);
  font-weight: 700;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ============================================================
   お問い合わせCTA
   ============================================================ */
.contact-cta {
  background: var(--blue-primary);
  color: #fff;
  overflow-x: clip;
}
.contact-cta__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  position: relative;
}
.contact-cta__inner::before {
  content: "";
  width: 135px;
  height: 191px;
  position: absolute;
  top: -40px;
  right: 0;
  z-index: 0;
  background: url(../img/index/bg04.svg) no-repeat center / contain;
}
.contact-cta__img {
  overflow: hidden;
}
.contact-cta__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.contact-cta__content {
  padding: 64px 48px;
}
.contact-cta__title {
  font-size: 1.7rem;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.4;
}
.contact-cta__text {
  opacity: 0.9;
  margin-bottom: 32px;
  line-height: 1.85;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: #fff;
  padding: 40px 24px;
  border-top: 1px solid var(--border-light);
}
.footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.footer__block{
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.footer__nav {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer__nav a {
  font-size: 14px;
  font-weight: 600;
  transition: color 0.2s;
}
.footer__nav a:hover { color: var(--blue-primary); }
.footer__copy {
  margin-top: 30px;
  text-align: right;
  font-size: 10px;
}

/* ============================================================
   RESPONSIVE: SP (〜767px)
   ============================================================ */
@media (max-width: 767px) {

  .pc_only {
    display: none;
  }
  .sp_only {
    display: block;
  }

  :root {
    --section-padding: var(--section-padding-sp);
  }

 .btn {
    padding: 15px 50px;
    font-size: 16px;
  }

  .btn--sm {
    padding: 10px 15px;
    font-size: 0.8rem;
  }

  .btn--w100 {
    width: 100%;
  }

  /* Header */
  .header__logo {
    margin: 20px 0 0 20px;
  }
  .header__logo img {
    width: 68px;
    height: auto;
  }
  .header__nav {
    top: 15px;
    right: 10px;
    gap: 5px;
  }

  /* Hero */
  .hero {
    padding: 65px 12px 15px;
    margin-top: -65px;
    height: auto;
  }
  .hero__inner {
    gap: 28px;
  }
  .hero__title {
    margin: 80px 0 0 0;
  }
  .hero__title span {
    display: fit-content;
    font-size: 34px;
    background-color: #fff;
    margin-left: 0;
    padding: 0 10px;
  }
  .hero__lead {
    width: fit-content;
    font-size: 14px;
    background-color: #fff;
    margin-left: 0;
    padding: 0 10px;
  }
  .hero__images {
    min-height: 220px;
    width: 100%;
  }
  .hero__btns {
    margin: 60px 0 0;
  }
  .hero__btns .btn {
    width: calc(50% - 8px);
  }
  .triangle-bottom::after {
      height: 70px;
  }
  /* FASTch Stats */
  .fastch-stats {
    padding: 40px 20px;
  }
  .fastch-stats__grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .fastch-stats__inner::before {
      width: 161px;
      height: 101px;
      top: -95px;
      left: -50px;
      z-index: 2;
  }
  .fastch-stats__inner::after {
      width: 127px;
      height: 161px;
      top: -140px;
      right: -90px;
      z-index: 2;
  }
  .fastch-stats__title {
      gap: 4px;
  }
  .fastch-stats__highlight {
      margin-right: 0;
      padding: 4px 10px;
  }
  .fastch-stats__subtitle {
      font-size: 23px;
      line-height: 1.6;
  }
  .fastch-stats__item {
    padding: 20px 4px;
  }
  .fastch-stats__text {
      font-size: 22px;
  }
  .fastch-stats__label {
      font-size: 14px;
  }
  .fastch-stats__icon img {
    max-width: 34px;
    max-height: 28px;
  }
  .fastch-stats__num {
    font-size: 40px;
  }
  .fastch-stats__unit {
    font-size: 20px;
  }
  .fastch-stats__peak {
    font-size: 30px;
  }

  /* 課題 */
  .issues__cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* FASTチャンネルとは */
  .about-fast .section-header__title::before {
    vertical-align: 0.14em;
  }
  .about-fast__body {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .about-fast__stat-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .about-fast__stat-item {
    padding: 18px 4px;
  }
  .about-fast__graph {
    text-align: center;
    margin: 0 auto;
    padding: 20px 0;
  }
  .about-fast .section-header {
    display: contents;
  }
  .about-fast .section-header__title {
    order: 1;
  }
  .about-fast__desc {
    order: 3;
  }
  .about-fast__text-block {
    order: 2;
  }
  .about-fast__stats {
    order: 4;
    margin-top: 20px;
  }
  .about-fast__graph {
    order: 5;
  }
  .about-fast__logo-box {
      /* margin-bottom: 20px;*/
  }
  .about-fast__stat-label {
      font-size: 14px;
  }
  .about-fast__stat-num {
    font-size: 34px;
  }
  .about-fast__stat-num span {
      font-size: 20px;
  }

  /* Vポイント */
  .vpoint {
    padding-top: 0;
  }
  .vpoint__inner,
  .vpoint__header__title,
  .vpoint__cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .vpoint__cards {
    margin-top: 0;
  }
  .vpoint__title {
    margin-top: 20px;
  }

  /* ターゲット */
  .targets__block {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 48px;
  }
  .targets__block--img-right .targets__img-wrap,
  .targets__block--img-right .targets__text-wrap {
    order: unset;
  }
  .targets__img-wrap img {
    width: 100%;
  }

  .cta-banner__inner {
    padding: 50px 23px;
  }

  /* 広告メニュー */
  .ad-menu__inner::before {
    width: 92px;
    height: 107px;
    position: absolute;
    top: -100px;
    left: -20px;
  }
  .ad-menu__cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 事例 */
  .case-study__header {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .case-study__display__contents {
    display: contents;
  }
  .case-study__label {
    order: 1;
  }
  .case-study__client {
    order: 2;
  }
  .case-study__title {
    order: 3;
  }
  .case-study__body {
    grid-template-columns: 1fr;
    gap: 20px;
    order: 4;
  }
  .case-study__title {
    font-size: 20px;
  }
  .case-study__txt {
    margin-top: 20px;
    order: 5;
  }
  .case-study__btn {
    text-align: center;
    margin-bottom: 20px;
    order: 6;
  }
  .case-study__stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 20px 0;
  }
  .case-study__stat-label {
    font-size: 15px;
  }
  .case-study__stat-num {
      font-size: 40px;
  }
  .case-study__stat-num span {
    font-size: 20px;
  }

  /* オプションスライダー */
   .options__slide {
    flex: 0 0 75vw;
  }

  /* 配信の流れ */
  .flow__steps {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
  .flow__step {
    display: flex;
    padding: 0;
  }
  .flow__steps::before {
    content: "";
    height: 90%;
    border-top: none ;
    border-left: solid 1px var(--blue-primary) ;
    position: absolute;
    top: 0;
    left: calc(100px / 2);
  }
  .flow__step-icon {
    width: 100px;
  }
  .flow__step-icon img {
    max-width: 40px;
    height: auto;
  }
  .flow__step-content {
    flex: 1;
    margin: 0 0 40px 20px;
  }

  /* FAQ */
  .faq__question,
  .faq__answer {
    padding: 16px 16px;
  }

  .faq__question {
    align-items: flex-start;
  }

  /* Contact CTA */
  .contact-cta__inner {
    grid-template-columns: 1fr;
  }
  .contact-cta__inner::before {
      width: 81px;
      height: 113px;
      top: -40px;
      right: 10px;
  }
  .contact-cta__img {
    height: 220px;
  }
  .contact-cta__content {
    padding: 40px 24px;
  }
  .contact-cta__title {
    font-size: 28px;
  }
  .contact-cta__btn {
    text-align: center;
  }

    /* Banner CTA */
  .cta-banner__title {
    font-size: 32px;
  }

  /* 広告メニュー SP */
  .ad-menu__card {
    padding: 32px 20px;
  }
  .ad-menu__card-price {
    font-size: 40px;
  }

  /* チャンネル */
  .channels {
    padding-top: 0;
  }
  .channels__content {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .channels__grid {
      gap: 10px;
  }
  .channels__item {
      font-size: 16px;
      padding: 14px 8px;
  }
  .channels__badge {
    padding: 8px 11px;
  }

  /* Section header */
  .section-header__title {
    font-size: 22px;
  }

  /* Footer */
  .footer__block{
    flex-direction: column;
  }
  .footer__nav {
    gap: 16px;
    flex-direction: column;
    align-items: center;
  }
}