@charset "UTF-8";
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&display=swap");

/* ========================================
  セクション0：リセット / ベース
======================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body, h1, h2, h3, h4, h5, h6, ul, ol, li, p, figure {
  margin: 0;
  padding: 0;
}

html {
  line-height: 1.6;
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  vertical-align: bottom;
}

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

body {
  font-family: "Noto Sans JP", sans-serif;
  background-color: #FFFFFF;
  color: #222222;
  font-size: 18px;
  line-height: 1.8;
}

.sp {
  display: none!important;
}
.sp-br {
  display: none;
}
.pc-br {
	display: block;
}

.red{
  color: #de2348;
  font-weight: bold;
}
.red2{
  color: #de2348;
  font-weight: bold;
  font-size:1.25rem;
}
.red-ttl{
  color: #de2348;
  font-weight: 800;
}
.blue{
   color:#045fd2;
   font-weight: bold;
}
.yellow{
	color:#ecec01;
	font-weight: bold;
}

.yellow-marker{
  font-weight: 1000;
  background: linear-gradient(
    transparent 60%,
    rgba(255,230,120,.85) 60%
  );
}

@media (max-width: 767px){
  body {
    font-size: 14px;
  }
  .sp{
	display: block!important;
	visibility: visible;
  }
  .pc{
	display: none!important;
	visibility: hidden;
  }
  .sp-br {
    display: block;
  }
  .pc-br {
    display: none;
  }
}

/* ========================================
  セクション0：共通レイアウト
======================================== */
.section {
  padding: 5rem 1.5rem 2rem;
}

.section2 {
  padding: 3rem 0;
  background-color: antiquewhite; 
}

.section-dark {
  background-color: #030712;
  color: #f3f4f6;
}

.section-white {
  background-color: #f9fafb;
  color: #1f2937;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.container-narrow {
  max-width: 850px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 30px;
  text-align: center;
  line-height: 1.5;
}

.section-description {
  color: #9ca3af;
  margin-bottom: 2.5rem;
  text-align: center;
}

@media screen and (max-width: 767px) {
  .section {
    padding: 30px 5px;
  }
  .section-title {
    font-size: 1.5rem;
  }
}

/* ========================================
  セクション01：ヘッダー
======================================== */
.header {
  border-bottom: 1px solid #1f2937;
  background-color: #030712;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo{
  display: flex;
  align-items: center;
}

.logo img{
  display: block;
  height: 30px;
  width: auto;
  margin: 5px 0;
}

.nav {
  display: flex;
  gap: 1rem;
  font-size: 0.875rem;
  color: #d1d5db;
}

.nav a:hover {
  text-decoration: underline;
}

@media screen and (max-width: 767px) {
  .header-inner {
	padding: 1rem 0.5rem;
  }
  .logo img{
    height: 20px;
    margin: 0;
  }
  .nav {
    font-size: 0.75rem;
    gap: 0.5rem;
  }
}

/* ========================================
  セクション02：ヒーロー
======================================== */
.hero-section{
  position: relative;
  background-image: url("https://s3.ap-northeast-1.amazonaws.com/tubecast.jp/pages/2601/images/bg.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: #ffffff;
  padding: clamp(3.5rem, 6vw, 5rem) 1.25rem clamp(4rem, 7vw, 6rem);
  text-align: center;
}

.hero-section::before{
  content:"";
  position:absolute;
  inset:0;
  background: linear-gradient(
    to bottom,
    rgba(2,6,23,0.85),
    rgba(2,6,23,0.75) 40%,
    rgba(2,6,23,0.9)
  );
  z-index: 0;
}

.hero-inner{
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.badge{
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  background: rgba(59,130,246,0.2);
  border: 1px solid rgba(96,165,250,0.6);
  color: #bfdbfe;
  font-size: 25px;
  font-weight: 700;
}

.hero-title{
  font-size: 55px;
  font-weight: 900;
  line-height: 1.2;
  margin: 0;
  text-shadow: 0 8px 30px rgba(0,0,0,0.6);
}

.gradient-text{
  background: linear-gradient(to right, #38ff58, #00ffda);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
  margin: 0.2em 0;  
}

.hero-description{
  font-size:  18px;
  color: #e5e7eb;
  max-width: 52rem;
  margin: 0;
  text-shadow: 0 6px 20px rgba(0,0,0,0.5);
}

.hero-cta{
  margin-top: 0.5rem;
}

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 1.25rem;
  border-radius: 9999px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.2s ease;
}

.btn-primary{
  color: #020617;
  background: linear-gradient(to right, #60a5fa, #5eead4);
  box-shadow: 0 18px 45px rgba(0,0,0,0.35);
  font-size: 25px;
  padding: 30px;
}

.btn-primary:hover{
  transform: translateY(-1px);
  box-shadow: 0 22px 60px rgba(0,0,0,0.45);
}

.hero-video{
  width: min(1000px, 100%);
  margin: clamp(2rem, 4vw, 3rem) auto 0;
  aspect-ratio: 16 / 9;
}

.hero-video iframe{
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
}

@media screen and (max-width: 767px) {
  .badge{
	font-size: 18px;
  }
  .hero-title{
	font-size: 42px;
	font-weight: 600;  
  }
  .gradient-text{
	margin: 0.4em 0;
  }
  .hero-cta{
    width: 100%;
  }
  .btn{
    width: 100%;
    max-width: 360px;
  }
}


/* ========================================
  セクション03：AIを使ってみたい
======================================== */
.ai-intro{
  position: relative;
  padding: clamp(4.5rem, 7vw, 6.5rem) 0;
  background:
    radial-gradient(900px 420px at 50% 0%, rgba(37,99,235,.10), rgba(0,0,0,0) 60%),
    radial-gradient(700px 420px at 80% 25%, rgba(94,234,212,.10), rgba(0,0,0,0) 60%),
    #ffffff;
  overflow: hidden;
}

.ai-intro::before{
  content:"";
  position:absolute;
  inset:-120px -80px auto -80px;
  height: 260px;
  background: linear-gradient(90deg, rgba(37,99,235,.14), rgba(94,234,212,.14));
  filter: blur(50px);
  opacity: .8;
  pointer-events:none;
}

.ai-intro-header{
  text-align: center;
  margin-bottom: clamp(2.25rem, 4vw, 3.25rem);
}

.section-eyebrow{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: .55rem 1.1rem;
  border-radius: 9999px;
  background: linear-gradient(90deg, rgba(37,99,235,.12), rgba(94,234,212,.12));
  border: 1px solid rgba(37,99,235,.22);
  color: #1d4ed8;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: .02em;
  box-shadow: 0 18px 45px rgba(15,23,42,.08);
}

.ai-intro .section-title{
  font-size: 45px;
  font-weight: 1000;
  line-height: 1.08;
  margin: 1rem 0 .9rem;
  color: #1f2937;
  letter-spacing: -0.02em;
  position: relative;
}

.ai-intro .section-title::after{
  content:"";
  display:block;
  width: min(900px, 90%);
  height: 10px;
  margin: .9rem auto 0;
  border-radius: 9999px;
  background: linear-gradient(90deg, rgba(37,99,235,.30), rgba(94,234,212,.30));
}

.ai-intro .section-lead{
  margin: 0;
  color: #334155;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  line-height: 1.85;
}

.ai-intro-grid{
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.ai-intro-text{
  padding: clamp(1.25rem, 2vw, 1.75rem);
  border-radius: 20px;
  background: rgba(248,250,252,.85);
  border: 1px solid rgba(226,232,240,.95);
  box-shadow: 0 24px 70px rgba(15,23,42,.07);
}

.ai-intro-text .text-large{
  font-size: clamp(1.1rem, 1.4vw, 1.35rem);
  line-height: 1.95;
  margin: 0 0 1.05rem;
  color: #0f172a;
}

.ai-intro .text-highlight{
  font-weight: 1000;
  color: #2563eb;
  position: relative;
  display: inline-block;
  padding: 0 .15rem;
}
.ai-intro .text-highlight::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:.05em;
  height:.55em;
  background: rgba(94,234,212,.22);
  z-index:-1;
  border-radius: 6px;
}

.ai-intro-points{
  display: flex;
  gap: .7rem;
  margin-top: 1.25rem;
  flex-direction: column;
}

.ai-intro-points .point{
  position: relative;
  padding: .75rem .95rem;
  border-radius: 14px;
  background: #ffffff;
  border: 3px solid rgba(226,232,240,.95);
  color: #0f172a;
  font-weight: 900;
  font-size: 25px;
  box-shadow: 0 16px 40px rgba(15,23,42,.06);
}

.ai-intro-points .point::before{
  content:"";
  display:inline-block;
  width: 16px;
  height: 16px;
  border-radius: 9999px;
  margin-right: .55rem;
  background: linear-gradient(90deg, #2563eb, #5eead4);
  vertical-align: middle;
}

.ai-intro .question-visual{
  position: relative;
  width: min(420px, 100%);
  margin: 0 auto;
  border-radius: 22px;
  background:
    radial-gradient(500px 240px at 50% 0%, rgba(37,99,235,.10), rgba(0,0,0,0) 60%),
    #ffffff;
  border: 1px solid rgba(226,232,240,.95);
  box-shadow: 0 30px 90px rgba(15,23,42,.10);
  padding: 1rem;
  overflow: hidden;
}

.ai-intro .question-img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  transform: scale(1.01);
}

.ai-intro .question-bubble{
  position: absolute;
  left: 50%;
  top: 30px;
  transform: translateX(-50%);
  background: rgba(2,6,23,.85);
  color: #ffffff;
  font-weight: 1000;
  font-size: 1.05rem;
  padding: .65rem 1.05rem;
  border-radius: 9999px;
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 22px 60px rgba(0,0,0,.20);
  white-space: nowrap;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.ai-intro .question-bubble::after{
  content:"";
  position:absolute;
  left: 50%;
  bottom: -8px;
  transform: translateX(-50%);
  width: 16px;
  height: 16px;
  background: rgba(2,6,23,.85);
  border-left: 1px solid rgba(255,255,255,.10);
  border-bottom: 1px solid rgba(255,255,255,.10);
  transform: translateX(-50%) rotate(45deg);
}

.ai-intro .container-narrow{
  max-width: 1100px;
}

@media (max-width: 900px){
  .ai-intro-grid{
    grid-template-columns: 1fr;
  }
  .ai-intro .question-visual{
    width: min(520px, 100%);
  }
}

@media screen and (max-width: 767px) {
  .section-eyebrow{
	font-size: 20px;
  }
  .ai-intro .section-title{
    font-size: 2.0rem;
    line-height: 1.12;
  }
  .ai-intro .section-title::after{
    height: 9px;
    width: min(420px, 78%);
  }
  .ai-intro-text{
    padding: 1.15rem;
  }
  .ai-intro-text .text-large{
    font-size: 1.08rem;
  }
  .ai-intro-points .point {
	font-size: 22px;  
  }
  .ai-intro .question-bubble{
    font-size: 1rem;
  }
}


/* ========================================
  セクション04：主な機能
======================================== */
.section.section-dark2{
  position: relative;
  padding: 30px 5px 30px;
  color: #e5e7eb;
  background:
    radial-gradient(900px 500px at 20% 10%, rgba(96,165,250,.20), rgba(0,0,0,0) 60%),
    radial-gradient(900px 500px at 80% 40%, rgba(94,234,212,.14), rgba(0,0,0,0) 60%),
    linear-gradient(180deg, #050a14 0%, #070f1f 40%, #050a14 100%);
  overflow: hidden;
}

.section.section-dark2::before{
  content:"";
  position:absolute;
  inset:-120px -80px auto -80px;
  height: 260px;
  background: linear-gradient(90deg, rgba(37,99,235,.18), rgba(94,234,212,.14));
  filter: blur(55px);
  opacity: .85;
  pointer-events:none;
}

.section.section-dark2 .section-title{
  font-size: clamp(2.0rem, 4vw, 2.9rem);
  font-weight: 1000;
  letter-spacing: -0.02em;
  margin: 0 0 clamp(2rem, 4vw, 3rem);
  color: #ffffff;
  text-shadow: 0 18px 55px rgba(0,0,0,.55);
  position: relative;
}

.section.section-dark2 .section-title::after{
  content:"";
  display:block;
  width: min(520px, 70%);
  height: 10px;
  margin: 1rem auto 0;
  border-radius: 9999px;
  background: linear-gradient(90deg, rgba(96,165,250,.35), rgba(94,234,212,.35));
}

.section.section-dark2 .features-grid{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 2.6vw, 2rem);
  align-items: stretch;
}

.section.section-dark2 .features-grid .card{
  position: relative;
  border-radius: 22px;
  padding: 15px;
  background: rgba(15, 23, 42, .55);
  border: 3px solid rgba(148, 163, 184, .20);
  box-shadow: 0 26px 80px rgba(0,0,0,.45);
  overflow: hidden;
  transition: transform .18s ease, box-shadow .22s ease, border-color .22s ease;
}

.section.section-dark2 .features-grid .card::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(600px 260px at 30% 0%, rgba(96,165,250,.12), rgba(0,0,0,0) 60%),
    radial-gradient(600px 260px at 90% 40%, rgba(94,234,212,.10), rgba(0,0,0,0) 60%);
  pointer-events:none;
}

.section.section-dark2 .features-grid .card:hover{
  transform: translateY(-4px);
  border-color: rgba(148, 163, 184, .34);
  box-shadow: 0 34px 110px rgba(0,0,0,.55);
}

.section.section-dark2 .features-grid .card-title{
  font-size: 1.5rem;
  font-weight: 1000;
  margin: 0 0 .9rem;
  color: rgba(191,219,254,.95);
  text-shadow: 0 10px 30px rgba(0,0,0,.5);
  text-align: center;
}

.section.section-dark2 .features-grid .card-image{
  width: 100%;
  height: auto;
  display: block;
  background: rgba(2, 6, 23, .45);
  box-shadow: 0 18px 60px rgba(0,0,0,.35);
  margin-bottom: .95rem;
}

.section.section-dark2 .features-grid .card-text{
  margin: 0 10px;
  color: #fff;
  font-size: 1.1rem;
  line-height: 1.7;
}

@media (max-width: 900px){
  .section.section-dark2 .features-grid{
    grid-template-columns: 1fr;
  }
}

/* ========================================
  セクション05：YouTube運営を自動化
======================================== */
.section-white .section-header{
  margin-bottom: 2.75rem;
}

.section-white .section-title{
  font-size: clamp(1.8rem, 3.8vw, 2.6rem);
  font-weight: 1000;
  letter-spacing: -0.02em;
}

.section-white .section-title. title-bar::after{
  content:"";
  display:block;
  width: min(520px, 70%);
  height: 10px;
  margin: 1rem auto 0;
  border-radius: 9999px;
  background: linear-gradient(90deg, rgba(37,99,235,.22), rgba(94,234,212,.22));
}

.section-white .section-title::after{
  content: none;
}

.container-wide{
  max-width: 12000px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.wide-media .container-wide{
  max-width: 900px;
  padding-left: 0;
  padding-right: 0;
}

.wide-media .image-wide{
  width: 100%;
  max-width: none;
  border-radius: 0;
  margin-left: auto;
  margin-right: auto;
}

.wide-media .before-after{
  border-radius: 0;
  border-left: 0;
  border-right: 0;
}

.wide-media .image-wide img{
  width: 100%;
  height: auto;
  display: block;
  border-radius: 1.5rem;
}

@media screen and (max-width: 767px) {
  .wide-media .image-wide img{
	border-radius: 0;
  }
}

/* ========================================
  セクション06：毎日投稿が当たり前の時代
======================================== */
.section-title-left{
  font-size: clamp(1.7rem, 3.3vw, 2.4rem);
  font-weight: 1000;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin-bottom: 1.5rem;
}

.intro-text{
  background: rgba(248,250,252,.9);
  border: 1px solid rgba(226,232,240,.95);
  border-radius: 18px;
  padding: clamp(1.2rem, 2.2vw, 1.6rem);
  box-shadow: 0 22px 60px rgba(15,23,42,.06);
  font-size: clamp(1.02rem, 1.2vw, 1.12rem);
  line-height: 2.0;
  color: #334155;
  margin-bottom: 2.25rem;
}

.comparison-card{
  border-radius: 18px;
  padding: clamp(1.25rem, 2.4vw, 1.75rem);
}

.comparison-card h3{
  font-size: 1.25rem;
  font-weight: 1000;
  letter-spacing: -0.01em;
}

.comparison-old{
  background: #ffffff;
  border: 1px solid rgba(226,232,240,.95);
  opacity: 1;
  filter: saturate(.85);
}

.comparison-old h3{
  color: #64748b;
  text-align: center;
  padding-bottom:15px;
}

.comparison-item{
  border-radius: 12px;
  background: #f1f5f9;
  border: 1px solid rgba(226,232,240,.95);
  padding: .95rem 1rem;
  font-weight: 800;
  color: #334155;
  text-align: center;
}

.comparison-new{
  background:
    radial-gradient(800px 420px at 30% 0%, rgba(37,99,235,.12), rgba(0,0,0,0) 60%),
    radial-gradient(800px 420px at 90% 40%, rgba(94,234,212,.10), rgba(0,0,0,0) 60%),
    #ffffff;
  border: 2px solid rgba(37,99,235,.35);
  box-shadow: 0 28px 90px rgba(37,99,235,.15);
  position: relative;
}

.comparison-badge{
  top: 14px;
  right: 14px;
  border-radius: 9999px;
  padding: .35rem .75rem;
  font-size: .78rem;
  font-weight: 900;
  background: linear-gradient(90deg, #2563eb, #4f46e5);
  box-shadow: 0 16px 40px rgba(37,99,235,.25);
}

.comparison-new h3{
  color: #0f172a;
  text-align: center;
  padding-bottom:15px;
}

.comparison-item-ai{
  border-radius: 14px;
  padding: 1rem 1rem;
  font-weight: 800;
  background: linear-gradient(90deg, rgba(37,99,235,.92), rgba(94,234,212,.92));
  box-shadow: 0 18px 50px rgba(37,99,235,.22);
  text-align: center;
}

.ai-tag{
  background: rgba(255,245,0);
  border: 1px solid rgba(255,255,255,.22);
  padding: .25rem .6rem;
  border-radius: 50px;
  font-size: 1.1rem;
  display: inline-block;
  width: 50%;
  margin-bottom: 10px;
}

.comparison-description{
  margin-top: 1rem;
  font-size: .98rem;
  line-height: 1.9;
}

.comparison-grid{
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.5rem;
}

.comparison-arrow{
  position: relative;
  width: 96px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 767px){
  .intro-text{
    padding: 1.1rem;
    line-height: 1.9;
  }
  .comparison-item{
    padding: .85rem .9rem;
    font-size: 17px;
  }
  .comparison-item-ai{
	font-size: 16px;
	  
  }
  .comparison-grid{
    grid-template-columns: 1fr;
  }
  .comparison-arrow{
	display: block;
	margin: 0 auto;
    width: 13%;
    height: auto;
  }
}

/* ========================================
   セクション07.2種類のAI
======================================== */
.section-dark3{
  background-color: #030712;
  color: #f3f4f6;
  padding: 4rem 0 1rem;
  position: relative;
  overflow: hidden;
}

.section-dark3::before{
  content:"";
  position:absolute;
  inset: -160px -120px auto -120px;
  height: 320px;
  background: radial-gradient(closest-side, rgba(96,165,250,.18), rgba(0,0,0,0) 70%);
  filter: blur(30px);
  pointer-events:none;
}

.section-dark3 .section-title{
  font-size: 40px;
  font-weight: 1000;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.section-dark3 .section-title::after{
  content:"";
  display:block;
  width: min(560px, 72%);
  height: 10px;
  margin: .95rem auto 0;
  border-radius: 9999px;
  background: linear-gradient(90deg, rgba(96,165,250,.25), rgba(94,234,212,.25));
}

.section-dark3 .section-description{
  max-width: 860px;
  margin: 0 auto clamp(1.8rem, 3vw, 2.6rem);
  color: rgba(255,255,255,.92);
  line-height: 1.95;
  font-size: 20px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.section-dark3 .ai-compare img{
  width: 100%;
  height: auto;
  display: block;
  max-width: 700px;
  margin: 20px auto;
  border-radius: 16px;
}

@media (max-width: 767px){
  .section-dark3{
    padding: 3.25rem 0 0.5rem;
  }
  .section-dark3 .section-title{
	font-size: 1.8rem;  
  }
  .section-dark3 .section-description{
    padding: 0 20px;
    text-align: left;
    font-size: 15px;
  }
  .section-dark3 .ai-compare{
	margin:0 1rem;
  }
}


/* ========================================
   セクション08.使い方タイトル
   セクション10.料金タイトル
   セクション14.FAQタイトル
======================================== */
.section-header-banner{
  position: relative;
  padding: clamp(4.2rem, 6vw, 6.2rem) 1.5rem;
  text-align: center;
  color: #fff;
  background:
    radial-gradient(900px 420px at 50% 0%, rgba(94,234,212,.22), rgba(0,0,0,0) 55%),
    radial-gradient(900px 420px at 20% 40%, rgba(96,165,250,.22), rgba(0,0,0,0) 60%),
    linear-gradient(135deg, #0b1220, #0a1633 45%, #081225);
  overflow: hidden;
}

.section-header-banner::before{
  content:"";
  position:absolute;
  inset:-120px -120px auto -120px;
  height: 260px;
  background: linear-gradient(90deg, rgba(96,165,250,.22), rgba(94,234,212,.18));
  filter: blur(55px);
  opacity: .9;
  pointer-events: none;
}

.section-header-banner h2{
  position: relative;
  z-index: 1;
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  font-weight: 1000;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0;
  text-shadow: 0 18px 55px rgba(0,0,0,.55);
}

.section-header-banner h2::after{
  content:"";
  display:block;
  width: min(520px, 72%);
  height: 10px;
  margin: 1.1rem auto 0;
  border-radius: 9999px;
  background: linear-gradient(90deg, rgba(96,165,250,.35), rgba(94,234,212,.35));
}

@media (max-width: 767px){
  .section-header-banner{
    padding: 2.5rem 1rem;
  }
}


/* ========================================
   セクション09.使い方手順
======================================== */
.container-flow {
  max-width: 950px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.steps-list{
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.step-item{
  position: relative;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(226,232,240,.95);
  border-radius: 22px;
  padding: clamp(1.1rem, 2.2vw, 1.6rem);
  box-shadow: 0 24px 70px rgba(15,23,42,.07);
  overflow: hidden;
}

.step-item::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(700px 240px at 20% 0%, rgba(37,99,235,.10), rgba(0,0,0,0) 60%),
    radial-gradient(700px 240px at 90% 30%, rgba(94,234,212,.10), rgba(0,0,0,0) 60%);
  pointer-events: none;
}

.step-title{
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .55rem .95rem;
  border-radius: 9999px;
  background: linear-gradient(90deg, rgba(37,99,235,.10), rgba(94,234,212,.10));
  border: 1px solid rgba(37,99,235,.22);
  color: #0f172a;
  font-size: 25px;
  font-weight: 1000;
  letter-spacing: -0.01em;
  margin: 0 0 .85rem;
}

.step-description{
  position: relative;
  z-index: 1;
  color: #334155;
  line-height: 1.95;
  font-size: clamp(1.0rem, 1.15vw, 1.08rem);
  margin: 0 0 1.1rem;
}

.step-description .emphasis{
  font-weight: 1000;
  color: #1d4ed8;
  position: relative;
  display: inline-block;
  padding: 0 .12rem;
}
.step-description .emphasis::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:.08em;
  height:.6em;
  background: rgba(94,234,212,.22);
  z-index:-1;
  border-radius: 6px;
}

.step-description strong{
  font-weight: 1000;
  color: #0f172a;
}

.step-image{
  position: relative;
  z-index: 1;
  width: 100%;
  display: block;
  border-radius: 18px;
  border: 1px solid rgba(226,232,240,.95);
  background: #fff;
  box-shadow: 0 18px 60px rgba(15,23,42,.10);
}

@media (max-width: 767px){
  .steps-list{
	gap: 1rem;
  }
  .step-item{
	border-radius:18px;
  }
  .step-item::before{
	position: unset;
  }
  .step-title{
	width: 100%;
	justify-content: center;
	font-size:18px;  
  }
  .add-channel img,
  .google-connect img,
  .create-mov img,
  .mov-upload img{    
	width: 100%;
	height: auto;
	display: block;
    box-shadow: 0 18px 45px rgba(0,0,0,.18);
  }
  .flow-arrow{
    display: flex;
    justify-content: center;
  }
  .flow-arrow img{
    width: auto;
    height: 30px;
    margin: 15px;
  }
}


/* ========================================
   セクション11.料金プラン
======================================== */
.pricing-layout{
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(1.5rem, 3vw, 2.75rem);
  align-items: start;
  margin-top: 1.75rem;
  margin-bottom: 3.25rem;
}

.pricing-features{
  background: #ffffff;
  border-radius: 22px;
  padding: clamp(1.25rem, 2.2vw, 1.85rem);
  border: 1px solid rgba(226,232,240,.95);
  box-shadow: 0 26px 80px rgba(15,23,42,.08);
}

.pricing-intro{
  color: #334155;
  line-height: 1.95;
  font-size: clamp(1.02rem, 1.15vw, 1.1rem);
  margin-bottom: 1.25rem;
}

.features-list{
  display: grid;
  gap: .75rem;
  margin: 0;
  padding: 0;
}

.features-list li{
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: .6rem;
  align-items: start;
  color: #0f172a;
  line-height: 1.75;
  font-weight: 700;
}

.features-list .bullet{
  margin-top: .35rem;
  color: #2563eb;
  font-size: 1.1rem;
  line-height: 1;
}

.pricing-card-wrapper{
  display: flex;
  justify-content: center;
  align-items: start;
}

.pricing-card{
  width: 100%;
  max-width: 520px;
  border-radius: 24px;
  padding: clamp(1.35rem, 2.4vw, 1.95rem);
  color: #ffffff;
  background:
    radial-gradient(900px 420px at 20% 10%, rgba(96,165,250,.25), rgba(0,0,0,0) 60%),
    radial-gradient(900px 420px at 80% 40%, rgba(94,234,212,.18), rgba(0,0,0,0) 60%),
    linear-gradient(135deg, #1d4ed8, #4f46e5 55%, #0ea5e9);
  box-shadow: 0 34px 120px rgba(37,99,235,.22);
  border: 1px solid rgba(255,255,255,.14);
  overflow: hidden;
  position: relative;
}

.pricing-card::before{
  content:"";
  position:absolute;
  inset:-140px -140px auto -140px;
  height: 280px;
  background: linear-gradient(90deg, rgba(255,255,255,.18), rgba(255,255,255,0));
  filter: blur(55px);
  opacity: .55;
  pointer-events: none;
}

.pricing-header{
  margin-top: .25rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: .9rem;
  position: relative;
  z-index: 1;
}

.price-item{
  text-align: center;
}

.price-label{
  font-size: .9rem;
  font-weight: 900;
  color: rgba(219,234,254,.95);
  letter-spacing: .02em;
}

.price-amount{
  margin-top: .25rem;
  font-size: 2rem;
  font-weight: 1000;
  letter-spacing: -0.01em;
}

.price-large{
  font-size: 2rem;
}

.price-divider{
  width: 1px;
  height: 3.2rem;
  background: rgba(255,255,255,.28);
}

.pricing-features-list{
  margin-top: 1.25rem;
  display: grid;
  gap: .75rem;
  font-size: .95rem;
  color: rgba(239,246,255,.92);
  position: relative;
  z-index: 1;
}

.pricing-features-list li{
  line-height: 1.6;
}

.pricing-buttons{
  margin-top: 1.35rem;
  position: relative;
  z-index: 1;
}

.pricing-buttons .btn-primary{
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  min-height: 52px;
  border-radius: 14px;
  font-weight: 1000;
  letter-spacing: .02em;
  background: rgba(255,255,255,.96);
  color: #1d4ed8;
  box-shadow: 0 18px 55px rgba(0,0,0,.20);
  transition: transform .16s ease, box-shadow .2s ease, opacity .2s ease;
}

.pricing-buttons .btn-primary:hover{
  transform: translateY(-1px);
  box-shadow: 0 24px 70px rgba(0,0,0,.28);
  opacity: .98;
}

.pricing-note{
  margin-top: .9rem;
  font-size: .82rem;
  line-height: 1.6;
  color: rgba(226,232,240,.85);
  text-align: center;
  position: relative;
  z-index: 1;
}

.arrow-section{
  margin-top: 2.75rem;
  display: flex;
  justify-content: center;
  gap: .9rem;
}

.arrow-icon{
  width: 10rem;
  height: 10rem;
  color: #ff0000;
  animation: pricingBounce 1.05s infinite;
}

.arrow-icon:nth-child(2){ animation-delay: .2s; }
.arrow-icon:nth-child(3){ animation-delay: .4s; }

@keyframes pricingBounce{
  0%, 100%{ transform: translateY(0); opacity: .75; }
  50%{ transform: translateY(.55rem); opacity: 1; }
}

.special-offer{
  margin-top: 2.25rem;
  text-align: center;
}

@media (max-width: 900px){
  .pricing-layout{
    grid-template-columns: 1fr;
  }
  .pricing-card{
    max-width: 680px;
  }
}

@media (max-width: 767px){
  .features-list li{
	font-size: 17px;  
  }
  .pricing-layout{
	margin-bottom: 0;
  }
  .price-large{
	font-size: 27px;
  }
  .price-amount{
	font-size: 27px;	  
  }
  .pricing-features{
    border-radius: 18px;
  }
  .pricing-features-list {
	font-size: 17px;
  }
  .pricing-buttons .btn-primary{
	padding: 15px;
	border-radius: 30px;
  }
  .pricing-card{
    border-radius: 20px;
  }
  .arrow-section{
	margin-top: 1rem;
  }
  .arrow-icon{
    width: 6rem;
    height: 6rem;
  }
}


/* ========================================
   セクション11-2.特別割引
======================================== */

.special-offer{
  margin-top: 3.5rem;
  text-align: center;
}

.special-offer-card{
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  border-radius: 28px;
  padding: clamp(1.6rem, 2.8vw, 2.6rem);
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #ff2a2a 0%, #ff3b3b 45%, #ffd6d6 100%);
  border: none;
  box-shadow: 0 40px 140px rgba(255, 42, 42, .45);
}

.special-offer-card::before{
  content:"";
  position:absolute;
  inset:-120px -120px auto -120px;
  height: 260px;
  background: linear-gradient(90deg, rgba(255,255,255,.25), rgba(255,255,255,.08));
  filter: blur(60px);
  opacity: .9;
  pointer-events:none;
}

.special-prices{
  position: relative;
  z-index: 1;
  margin: 1.6rem auto 1.2rem;
  width: min(760px, 100%);
  border-radius: 22px;
  overflow: hidden;
  background: #050505;
  box-shadow: 0 28px 90px rgba(0,0,0,.45);
}

.special-prices-bg{
  position: relative;
  background-image: url("https://s3.ap-northeast-1.amazonaws.com/tubecast.jp/pages/2601/images/cta_bg.png");
  background-size: cover;
  background-position: center;
  border-radius: 22px;
  padding: clamp(1.6rem, 3vw, 2.8rem);
  box-shadow: 0 28px 90px rgba(0,0,0,.45);
}

.special-prices-inner{
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.special-prices-inner .cta-txt-img{
  width: 100%;
  max-width: 720px;
  margin: 0 auto 1.4rem;
  display: block;
}

.special-prices-bottom{
  background: #000;
  padding: 3.5rem 0 0;
  border-radius: 0 0 22px 22px;
}

.special-float{
  position: absolute;
  left: 50%;
  bottom: -5.2rem;
  transform: translateX(-50%);
  width: min(540px, 92%);
  text-align: center;
  z-index: 10;
}

.special-note{
  margin-top: .8rem;
  font-size: 1.2rem;
  color: #fff;
  font-weight: bold;
  opacity: 0.9;
}

.btn-special{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: min(540px, 100%);
  min-height: 62px;
  border-radius: 18px;
  font-weight: 1000;
  font-size: 1.2rem;
  letter-spacing: .04em;
  color: #ffffff;
  background: linear-gradient(90deg, #ff0040, #ff2a2a);
  box-shadow: 0 36px 120px rgba(0,0,0,.45);
  transition: transform .15s ease, box-shadow .2s ease;
  position: relative;
  overflow: hidden;
}

.btn-special:hover{
  transform: translateY(-2px);
  box-shadow: 0 44px 150px rgba(0,0,0,.6);
}

.special-offer-card{
  animation: offerFadeUp .6s ease both;
}

@keyframes offerFadeUp{
  from{ opacity: 0; transform: translateY(14px); }
  to{ opacity: 1; transform: translateY(0); }
}

.special-details{
  position: relative;
  z-index: 1;
  margin: 1.8rem auto;
  max-width: 660px;
  text-align: left;
  background: #000;
  padding: 1rem;
  border-radius: 26px;
}

.special-details ul{
  background: #fff;
  border-radius: 18px;
  padding: 1.1rem 1.2rem;
  display: grid;
  gap: .7rem;
  font-size: .95rem;
  line-height: 1.8;
  color: #111827;
}

@media (max-width: 767px){
  .special-prices-bg{
    padding-bottom: 7.5rem;
  }
  .special-float{
    bottom: 1.2rem;
  }
  .special-prices-bottom{
	padding: 0;
	margin-top: -40px;
  }
  .special-offer-card{
    border-radius: 22px;
    padding: 1.4rem 1rem 1.5rem;
  }
  .special-note{
	font-size: 17px;
  }
  .btn-special{
    min-height: 56px;
    font-size: 1.05rem;
  }
}


/* ========================================
   セクション12.CTA
======================================== */
.cta-section{
  position: relative;
  padding: clamp(4.2rem, 6vw, 6.2rem) 1.5rem;
  text-align: center;
  color: #fff;
  background:
    radial-gradient(900px 420px at 50% 0%, rgba(255,42,42,.28), rgba(0,0,0,0) 55%),
    radial-gradient(900px 420px at 20% 40%, rgba(255,0,64,.22), rgba(0,0,0,0) 60%),
    linear-gradient(135deg, #160406, #2a0608 45%, #0b0203);
  overflow: hidden;
}

.cta-section::before{
  content:"";
  position:absolute;
  inset:-140px -140px auto -140px;
  height: 300px;
  background: linear-gradient(90deg, rgba(255,255,255,.18), rgba(255,255,255,0));
  filter: blur(60px);
  opacity: .85;
  pointer-events:none;
}

.cta-title{
  position: relative;
  z-index: 1;
  font-size: clamp(1.9rem, 3.8vw, 2.9rem);
  font-weight: 1000;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0;
  text-shadow: 0 18px 55px rgba(0,0,0,.6);
}

.cta-title::after{
  content:"";
  display:block;
  width: min(560px, 72%);
  height: 10px;
  margin: 1.15rem auto 0;
  border-radius: 9999px;
  background: linear-gradient(90deg, rgba(255,255,255,.28), rgba(255,255,255,.12));
}

.cta-section{
  animation: ctaFade .7s ease both;
}
@keyframes ctaFade{
  from{ opacity: 0; transform: translateY(12px); }
  to{ opacity: 1; transform: translateY(0); }
}

@media (max-width: 767px){
  .cta-section{ padding: 3.6rem 1rem; }
}


/* ========================================
   セクション13.開発者メッセージ
======================================== */

.message-content{
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(226,232,240,.95);
  border-radius: 22px;
  padding: clamp(1.25rem, 2.6vw, 2rem);
  box-shadow: 0 28px 90px rgba(15,23,42,.08);
  overflow: hidden;
}

.message-content p{
  font-size: 1.08rem;
  line-height: 2.05;
  color: #0f172a;
  margin: 0 0 1.25rem;
}

.message-content p:last-child{
  margin-bottom: 0;
}

.message-content .ai-era{
  font-weight: 1000;
  font-size: 1.25rem;
  border-bottom: 3px solid rgba(255,0,64,.55);
}

.emphasis-main{
  font-size: 1.9rem;
  font-weight: 1000;
  letter-spacing: .05em;
  border-bottom: 5px solid #ff2791;
  background: linear-gradient(360deg, #ffee13, transparent);
}

.emphasis-sub{
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.8;
}

.message-end{
  display: grid;
  grid-template-columns: 1fr;
  gap: .85rem;
  margin-top: 1.8rem;
}

.message-end .message-photo{
  display: block;
  width: min(400px, 100%);
  height: auto;
  border-radius: 26px;
  object-fit: cover;
  border: 1px solid rgba(226,232,240,.95);
  box-shadow:
    0 40px 120px rgba(15,23,42,.18),
    0 10px 30px rgba(0,0,0,.12);
}

.message-end .message-signature{
  margin-top: .25rem;
  text-align: left;
  font-weight: bold;
}

@media (max-width: 767px){
  .message-end{
    gap: .75rem;
  }
  .message-end .message-photo{
    width: min(360px, 92%);
    margin: 0 auto;
  }
  .message-end .message-signature{
    text-align: center;
  }
}

.message-cta{
  text-align: center;
  margin-top: 1.75rem;
}

.btn-gem{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .7rem;
  width: min(560px, 100%);
  min-height: 58px;
  border-radius: 16px;
  font-weight: 1000;
  font-size: 1.08rem;
  color: #ffffff;
  background: linear-gradient(90deg, #ff0040, #ff2a2a);
  box-shadow: 0 34px 120px rgba(0,0,0,.35);
  transition: transform .15s ease, box-shadow .2s ease, filter .2s ease;
  position: relative;
  overflow: hidden;
}

.btn-gem::before{
  content:"";
  position:absolute;
  inset:0;
  background: linear-gradient(120deg, rgba(255,255,255,0) 20%, rgba(255,255,255,.35) 45%, rgba(255,255,255,0) 70%);
  transform: translateX(-120%);
  transition: transform .55s ease;
}

.btn-gem:hover{
  transform: translateY(-2px);
  box-shadow: 0 44px 150px rgba(0,0,0,.5);
  filter: saturate(1.05);
}

.btn-gem:hover::before{
  transform: translateX(120%);
}

.message-content{
  animation: devMsgFadeUp .7s ease both;
}

@keyframes devMsgFadeUp{
  from{ opacity: 0; transform: translateY(10px); }
  to{ opacity: 1; transform: translateY(0); }
}


@media (max-width: 767px){
  .message-content{
    border-radius: 18px;
    padding: 1.1rem;
    padding-right: 1.1rem;
  }

  .message-content p{
    font-size: 1rem;
    line-height: 1.95;
  }

  .message-emphasis{
    font-size: 1.15rem;
  }

  .message-content::after{
    display: none;
  }
}

/* ========================================
   セクション15.FAQ
======================================== */
.faq-list{
  display: grid;
  gap: 1.1rem;
  margin-top: 1.25rem;
}

.faq-item{
  position: relative;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(226,232,240,.95);
  border-radius: 18px;
  padding: clamp(1.1rem, 2.2vw, 1.45rem);
  box-shadow: 0 22px 60px rgba(15,23,42,.07);
  overflow: hidden;
}

.faq-item::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(700px 240px at 20% 0%, rgba(37,99,235,.10), rgba(0,0,0,0) 60%),
    radial-gradient(700px 240px at 90% 30%, rgba(94,234,212,.10), rgba(0,0,0,0) 60%);
  pointer-events:none;
}

.faq-question{
  position: relative;
  z-index: 1;
  display: flex;
  align-items: baseline;
  gap: .55rem;
  font-weight: 1000;
  font-size: clamp(1.05rem, 1.25vw, 1.2rem);
  letter-spacing: -0.01em;
  color: #0f172a;
  margin: 0 0 .65rem;
}

.faq-q{
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 12px;
  font-weight: 1000;
  color: #1d4ed8;
  background: linear-gradient(90deg, rgba(37,99,235,.14), rgba(94,234,212,.12));
  border: 1px solid rgba(37,99,235,.22);
}

.faq-answer{
  position: relative;
  z-index: 1;
  margin: 0;
  color: #334155;
  line-height: 1.95;
  font-size: clamp(1.0rem, 1.1vw, 1.06rem);
  padding-left: 0; /* 左インデントは無しでスッキリ */
}

.faq-answer br{
  line-height: 1.9;
}

@media (max-width: 767px){
  .faq-item{
    border-radius: 16px;
  }
  .faq-q{
    width: 2.0rem;
    height: 2.0rem;
    border-radius: 11px;
  }
}


/* ========================================
   セクション16.フッター
======================================== */
.footer {
  background-color: #000;
  padding: 2rem;
  text-align: center;
  color: #fff;
  font-size: 0.875rem;
  margin-top: 3rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.footer-links {
  margin: 1rem 0 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.footer-links a:hover {
  color: #d1d5db;
}

@media (max-width: 767px){
  .footer {
	font-size: 12px;
  }
  .footer-links {
	margin: 0 0 1rem;
  }
}