/* =====================================================
   pages/index.css — トップページ固有スタイル
   ===================================================== */

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 100px 0 90px;
  overflow: hidden;
  background: linear-gradient(170deg, rgba(240,245,251,.82) 0%, rgba(250,252,255,.88) 100%), url('/images/sd_hero_juku.png') center/cover no-repeat;
}
.hero-bg-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-spotlight {
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(600px circle at var(--mx,50%) var(--my,50%), rgba(74,144,217,.08), transparent 60%);
  transition: background .15s ease;
}
.hero-blob {
  position: absolute;
  border-radius: 40% 60% 55% 45% / 55% 40% 60% 45%;
  filter: blur(40px);
  opacity: .15;
  pointer-events: none;
  will-change: transform;
}
.hero-blob-1 {
  width: 600px; height: 600px;
  background: conic-gradient(from 0deg, rgba(74,144,217,.7), rgba(124,184,240,.5), rgba(74,144,217,.7));
  top: -150px; left: -100px;
  animation: blobRotate1 28s linear infinite;
}
.hero-blob-2 {
  width: 500px; height: 500px;
  background: conic-gradient(from 120deg, rgba(124,184,240,.6), rgba(240,160,80,.35), rgba(124,184,240,.6));
  bottom: -100px; right: -80px;
  animation: blobRotate2 36s linear infinite;
}
.hero-blob-3 {
  width: 380px; height: 380px;
  background: conic-gradient(from 240deg, rgba(240,160,80,.45), rgba(74,144,217,.4), rgba(240,160,80,.45));
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  animation: blobRotate3 40s linear infinite;
}
@keyframes blobRotate1 { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes blobRotate2 { from { transform: rotate(0deg); } to { transform: rotate(-360deg); } }
@keyframes blobRotate3 { from { transform: translate(-50%,-50%) rotate(0deg); } to { transform: translate(-50%,-50%) rotate(360deg); } }

.hero .inner {
  display: grid;
  grid-template-columns: 1fr .85fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-text .badge {
  display: inline-block;
  background: rgba(74,144,217,.08);
  border: 1px solid rgba(74,144,217,.15);
  color: var(--secondary);
  padding: 6px 22px;
  border-radius: var(--radius-full);
  font-size: .76em;
  font-weight: 500;
  margin-bottom: 24px;
  font-family: "Zen Maru Gothic", sans-serif;
}
.hero h1 {
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 2.4em;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 18px;
  font-weight: 800;
  text-wrap: balance;
}
.hero h1 .accent {
  background: linear-gradient(90deg, var(--accent), #e8943e);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-lead {
  color: var(--text-light);
  font-size: .95em;
  margin-bottom: 34px;
  line-height: 2.0;
}
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-hero {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: #fff;
  padding: 16px 42px;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: 700;
  font-size: 1em;
  box-shadow: 0 4px 16px rgba(240,160,80,.35);
  transition: transform .3s, box-shadow .3s;
}
.btn-hero:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(240,160,80,.45); }
.btn-hero-sub {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid var(--secondary);
  color: var(--secondary);
  padding: 14px 36px;
  border-radius: var(--radius-full);
  text-decoration: none;
  font-weight: 600;
  font-size: 1em;
  transition: background-color .3s, color .3s, transform .3s;
}
.btn-hero-sub:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); }

.hero-right { display: flex; flex-direction: column; gap: 14px; }
.hero-card {
  background: rgba(255,255,255,.85);
  border: 1px solid rgba(74,144,217,.1);
  border-radius: var(--radius);
  padding: 22px 24px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  transition: transform .3s, box-shadow .3s;
}
.hero-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.hero-card-label {
  font-size: .72em; color: var(--text-light); font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase; margin-bottom: 4px;
}
.hero-card h3 {
  color: var(--primary);
  font-family: "Zen Maru Gothic", sans-serif;
  font-size: 1.05em; font-weight: 700; margin-bottom: 4px;
}
.hero-card p { color: var(--text-light); font-size: .82em; line-height: 1.7; }
.hero-stat { display: flex; gap: 24px; margin-top: 8px; }
.hero-stat-item { text-align: center; }
.hero-stat-num {
  font-size: 1.7em; font-weight: 800; color: var(--secondary);
  font-family: "Zen Maru Gothic", sans-serif;
}
.hero-stat-label { font-size: .68em; color: var(--text-light); }

/* ===== Numbers ===== */
.numbers { background: var(--bg-white); padding: 48px 0; position: relative; }
.numbers-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; text-align: center; }
.num-item { padding: 20px 8px; }
.num-item .num {
  font-size: 2.4em; font-weight: 800; color: var(--secondary);
  font-family: "Zen Maru Gothic", sans-serif;
}
.num-item .num small { font-size: .38em; font-weight: 500; color: var(--text-light); }
.num-item .num-label { font-size: .82em; color: var(--text-light); margin-top: 4px; }

/* ===== Features ===== */
.features { background: var(--bg-alt); padding: 80px 0; position: relative; overflow: hidden; }
.features-dots {
  position: absolute; inset: 0;
  background: radial-gradient(circle, rgba(74,144,217,.12) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}
.bubble {
  position: absolute; border-radius: 50%;
  background: rgba(74,144,217,.12); pointer-events: none;
}
.bubble:nth-child(1) { width:20px;height:20px;left:5%;animation:rise 18s linear infinite }
.bubble:nth-child(2) { width:14px;height:14px;left:15%;animation:rise 22s linear infinite 2s }
.bubble:nth-child(3) { width:24px;height:24px;left:30%;animation:rise 16s linear infinite 5s }
.bubble:nth-child(4) { width:10px;height:10px;left:45%;animation:rise 20s linear infinite 3s }
.bubble:nth-child(5) { width:18px;height:18px;left:60%;animation:rise 24s linear infinite 7s }
.bubble:nth-child(6) { width:12px;height:12px;left:72%;animation:rise 19s linear infinite 1s }
@keyframes rise {
  from { transform: translateY(100vh) scale(0); opacity:0; }
  10% { opacity:1; }
  90% { opacity:1; }
  to { transform: translateY(-100px) scale(1.2); opacity:0; }
}

.features-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 28px;
  position: relative; z-index: 1;
}
.feature-card {
  background: rgba(255,255,255,.9); border-radius: var(--radius);
  padding: 36px 28px; text-align: center;
  box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
  backdrop-filter: blur(4px);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.feature-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, rgba(74,144,217,.1), rgba(124,184,240,.1));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px; transition: transform .3s;
}
.feature-card:hover .feature-icon { animation: iconBounce .4s ease; }
@keyframes iconBounce {
  0% { transform: scale(1); }
  40% { transform: scale(1.15); }
  70% { transform: scale(.95); }
  100% { transform: scale(1); }
}
.feature-card h3 {
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 700; font-size: 1.15em; color: var(--primary); margin-bottom: 10px;
}
.feature-card p { font-size: .9em; color: var(--text-light); line-height: 1.9; }
.badge-new {
  display: inline-block;
  background: linear-gradient(135deg, #ff6b6b, #ee5a24);
  color: #fff; font-size: .6em; padding: 2px 10px;
  border-radius: var(--radius-full); vertical-align: middle; margin-left: 6px; font-weight: 700;
}

/* ===== Thinking Steps ===== */
.thinking {
  background: linear-gradient(rgba(255,255,255,.88), rgba(250,252,255,.92)),
    url('/images/sd_tutoring.png') center/cover no-repeat;
  background-attachment: fixed;
  padding: 80px 0; position: relative; overflow: hidden;
}
.thinking-noise {
  position: absolute; inset: 0; pointer-events: none; opacity: .03;
  mix-blend-mode: overlay;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-attachment: fixed;
}
.thinking-parallax-1 {
  position: absolute; width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(74,144,217,.04), transparent);
  top: 10%; right: 5%; background-attachment: fixed; pointer-events: none;
}
.thinking-parallax-2 {
  position: absolute; width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(240,160,80,.03), transparent);
  bottom: 5%; left: -5%; background-attachment: fixed; pointer-events: none;
}
.steps-grid {
  display: grid; grid-template-columns: repeat(3,1fr);
  gap: 0; position: relative; z-index: 1;
}
.step-item { position: relative; padding: 40px 32px; text-align: center; }
.step-item:not(:last-child)::after {
  content: ""; position: absolute; right: 0; top: 20%;
  height: 60%; width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(74,144,217,.15), transparent);
}
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-family: "Zen Maru Gothic", sans-serif; font-weight: 800; font-size: 1.2em;
  margin: 0 auto 16px;
}
.step-item h3 {
  font-family: "Zen Maru Gothic", sans-serif;
  font-weight: 700; color: var(--primary); margin-bottom: 10px; font-size: 1.1em;
}
.step-item p { font-size: .88em; color: var(--text-light); line-height: 1.9; }

/* ===== Case Studies ===== */
.cases { background: var(--bg-alt); padding: 80px 0; position: relative; overflow: hidden; }
.float-particle { position: absolute; pointer-events: none; opacity: .15; }
.float-particle:nth-child(1) { width:8px;height:8px;background:var(--secondary);border-radius:50%;top:15%;left:8%;animation:floatP 12s ease-in-out infinite }
.float-particle:nth-child(2) { width:6px;height:6px;background:var(--accent);border-radius:2px;top:30%;right:5%;animation:floatP 15s ease-in-out infinite 2s }
.float-particle:nth-child(3) { width:10px;height:10px;background:var(--secondary-light);border-radius:50%;top:60%;left:3%;animation:floatP 18s ease-in-out infinite 4s }
@keyframes floatP {
  0%,100% { transform: translate(0,0); }
  25% { transform: translate(15px,-20px); }
  50% { transform: translate(-10px,-35px); }
  75% { transform: translate(20px,-15px); }
}
.cases-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; position: relative; z-index: 1; }
.case-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-header {
  display: flex; align-items: center; gap: 14px;
  padding: 20px 24px; border-bottom: 1px solid rgba(74,144,217,.06);
}
.case-header.elementary { background: linear-gradient(135deg,rgba(74,144,217,.04),rgba(124,184,240,.04)); }
.case-header.middle { background: linear-gradient(135deg,rgba(46,139,87,.04),rgba(76,175,80,.04)); }
.case-header.high { background: linear-gradient(135deg,rgba(156,39,176,.04),rgba(186,104,200,.04)); }
.case-avatar { width: 52px; height: 52px; border-radius: 50%; overflow: hidden; flex-shrink: 0; background: var(--bg-alt); }
.case-avatar img { width: 100%; height: 100%; object-fit: cover; }
.case-name { font-family: "Zen Maru Gothic", sans-serif; font-weight: 700; color: var(--primary); font-size: .95em; }
.case-desc { font-size: .78em; color: var(--text-light); }
.case-body { padding: 20px 24px; }
.case-step { display: flex; gap: 12px; margin-bottom: 14px; align-items: flex-start; }
.case-step:last-child { margin-bottom: 0; }
.case-step-label {
  flex-shrink: 0; font-size: .7em; font-weight: 700; color: #fff;
  background: var(--secondary); padding: 3px 12px;
  border-radius: var(--radius-full); white-space: nowrap; margin-top: 3px;
}
.case-step-label.step2 { background: #4caf50; }
.case-step-label.step3 { background: var(--accent); }
.case-step p { font-size: .86em; color: var(--text); line-height: 1.8; }

/* ===== Juku Courses ===== */
.juku { background: var(--bg-white); padding: 80px 0; }
.juku-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.juku-card {
  background: #fff; border-radius: var(--radius); padding: 36px 28px;
  text-align: center; box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
}
.juku-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.juku-card .step {
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg,rgba(74,144,217,.08),rgba(124,184,240,.08));
  display: flex; align-items: center; justify-content: center; margin: 0 auto 16px;
}
.juku-card h3 { font-family: "Zen Maru Gothic", sans-serif; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.juku-card p { font-size: .88em; color: var(--text-light); line-height: 1.9; }

/* ===== Mid CTA ===== */
.mid-cta {
  background: linear-gradient(135deg,rgba(74,144,217,.9),rgba(124,184,240,.88)),
    url('/images/classroom-bright2.jpg') center/cover no-repeat;
  padding: 48px 28px; text-align: center;
}
.mid-cta p {
  font-family: "Zen Maru Gothic", sans-serif; color: #fff;
  font-size: 1.2em; font-weight: 700; margin-bottom: 20px; line-height: 1.6;
}
.mid-cta .btn-hero { background: var(--accent); color: #fff; }

/* ===== Programming ===== */
.pg {
  background: linear-gradient(rgba(240,245,251,.93),rgba(240,245,251,.96)),
    url('/images/sd_programming.png') center/cover no-repeat;
  padding: 80px 0; position: relative; overflow: hidden;
}
.pg-typing { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0; }
.pg-code-line {
  position: absolute; font-family: "Courier New", monospace;
  font-size: .85em; color: var(--primary); opacity: .04; white-space: nowrap;
}
.pg-code-line:nth-child(1) { top:8%;left:5%;animation:typeWriter 6s steps(20) infinite }
.pg-code-line:nth-child(2) { top:22%;right:3%;animation:typeWriter 8s steps(25) infinite 2s }
.pg-code-line:nth-child(3) { top:48%;left:8%;animation:typeWriter 7s steps(18) infinite 4s }
.pg-code-line:nth-child(4) { top:72%;right:6%;animation:typeWriter 5s steps(15) infinite 1s }
.pg-code-line:nth-child(5) { top:88%;left:15%;animation:typeWriter 9s steps(22) infinite 3s }
@keyframes typeWriter {
  0% { width: 0; overflow: hidden; }
  50% { width: auto; }
  100% { width: auto; opacity: .04; }
}
.pg-note {
  text-align: center; font-size: .92em; color: var(--text);
  margin-bottom: 36px; line-height: 1.8; position: relative; z-index: 1;
}
.pg-note strong { color: var(--secondary); }
.pg-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; position: relative; z-index: 1; }
.pg-card {
  background: #fff; border-radius: var(--radius); padding: 28px 20px;
  text-align: center; box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s;
}
.pg-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.pg-icon {
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg,rgba(74,144,217,.1),rgba(124,184,240,.1));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 14px; color: var(--secondary);
}
.pg-card:hover .pg-icon { animation: iconBounce .4s ease; }
.pg-card h3 { font-family: "Zen Maru Gothic", sans-serif; font-weight: 700; color: var(--primary); font-size: .95em; margin-bottom: 6px; }
.pg-card .level { font-size: .75em; color: #2a6db5; font-weight: 700; margin-bottom: 10px; }
.pg-card p { font-size: .82em; color: var(--text-light); line-height: 1.8; }

/* ===== IT Passport Banner ===== */
.qual { background: var(--bg-white); padding: 60px 0; }
.qual-banner {
  background: linear-gradient(135deg,rgba(74,144,217,.06),rgba(124,184,240,.04));
  border: 2px solid rgba(74,144,217,.12);
  border-radius: var(--radius); padding: 36px 40px;
  display: flex; gap: 28px; align-items: flex-start;
  transition: transform .3s, box-shadow .3s;
}
.qual-banner:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.qual-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg,var(--secondary),var(--secondary-light));
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.qual-body h3 { font-family: "Zen Maru Gothic", sans-serif; font-weight: 800; color: var(--primary); font-size: 1.2em; margin-bottom: 6px; }
.qual-target { font-size: .82em; color: var(--secondary); font-weight: 600; margin-bottom: 10px; }
.qual-body p { font-size: .88em; color: var(--text-light); line-height: 1.9; margin-bottom: 12px; }
.qual-link { color: var(--secondary); text-decoration: none; font-weight: 600; font-size: .9em; }
.qual-link:hover { color: var(--primary); }

/* ===== Pricing ===== */
.pricing { background: var(--bg-alt); padding: 80px 0; }
.price-section-title {
  font-family: "Zen Maru Gothic", sans-serif; font-weight: 700; color: var(--primary);
  text-align: center; font-size: 1.1em; margin: 36px 0 12px;
  padding-top: 24px; border-top: 1px solid rgba(74,144,217,.08);
}
.price-section-title:first-of-type { border-top: none; margin-top: 0; padding-top: 0; }
.scroll-hint { text-align: center; font-size: .78em; color: var(--text-light); margin-bottom: 8px; display: none; }
.price-table-wrap {
  overflow-x: auto; margin-bottom: 8px;
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.price-table { width: 100%; border-collapse: collapse; background: #fff; font-size: .88em; }
.price-table th, .price-table td {
  padding: 14px 16px; text-align: center; border-bottom: 1px solid rgba(74,144,217,.06);
}
.price-table td { font-variant-numeric: tabular-nums; }
.price-table thead th { background: var(--primary); color: #fff; font-weight: 600; font-size: .85em; letter-spacing: .02em; }
.price-table tbody tr:hover { background: rgba(74,144,217,.02); }
.price-table td:first-child { text-align: left; font-weight: 500; white-space: nowrap; }
.study-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-bottom: 8px; }
.study-card { background: #fff; border-radius: var(--radius); padding: 24px 20px; text-align: center; box-shadow: var(--shadow); }
.study-card h4 { font-family: "Zen Maru Gothic", sans-serif; font-weight: 700; color: var(--primary); font-size: .95em; margin-bottom: 6px; }
.study-card .price { font-size: 1.3em; font-weight: 800; color: var(--secondary); font-family: "Zen Maru Gothic", sans-serif; }
.study-card .price.free { color: #4caf50; }
.study-card p { font-size: .78em; color: var(--text-light); margin-top: 6px; line-height: 1.6; }

/* ===== Voices ===== */
.voices { background: var(--bg-white); padding: 80px 0; }
.voices-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.voice-card {
  background: #fff; border-radius: var(--radius); padding: 28px 24px;
  box-shadow: var(--shadow); transition: transform .3s, box-shadow .3s; position: relative;
}
.voice-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.voice-card::before {
  content: "\201C"; position: absolute; top: 16px; left: 20px;
  font-size: 3em; color: rgba(74,144,217,.1); font-family: Georgia, serif; line-height: 1;
}
.voice-header { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.voice-avatar { width: 48px; height: 48px; border-radius: 50%; overflow: hidden; background: var(--bg-alt); flex-shrink: 0; }
.voice-avatar img { width: 100%; height: 100%; object-fit: cover; }
.voice-name { font-family: "Zen Maru Gothic", sans-serif; font-weight: 700; color: var(--primary); font-size: .9em; }
.voice-role { font-size: .76em; color: var(--text-light); }
.voice-text { font-size: .88em; color: var(--text); line-height: 1.9; }

/* ===== Teacher Message ===== */
.teacher { background: var(--bg-alt); padding: 80px 0; }
.teacher-content { display: grid; grid-template-columns: 200px 1fr; gap: 40px; align-items: start; }
.teacher-photo { text-align: center; }
.teacher-photo-circle {
  width: 160px; height: 160px; border-radius: 50%;
  background: linear-gradient(135deg,rgba(74,144,217,.1),rgba(124,184,240,.08));
  display: flex; align-items: center; justify-content: center; margin: 0 auto 12px;
}
.teacher-info h3 { font-family: "Zen Maru Gothic", sans-serif; font-weight: 800; color: var(--primary); font-size: 1.15em; margin-bottom: 4px; }
.teacher-role { font-size: .82em; color: var(--secondary); font-weight: 600; margin-bottom: 12px; line-height: 1.7; }
.teacher-badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.teacher-badges .badge {
  display: inline-block; background: rgba(74,144,217,.08); color: var(--secondary);
  border: 1px solid rgba(74,144,217,.18); border-radius: var(--radius-full);
  padding: 4px 14px; font-size: .78em; font-weight: 600;
  font-family: "Zen Maru Gothic", sans-serif;
}
.teacher-info p { font-size: .9em; color: var(--text); line-height: 2.0; margin-bottom: 14px; }
.line-qr-block {
  max-width: 440px; margin: 0 auto 28px; padding: 14px 18px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); display: flex; gap: 16px; align-items: center; text-align: left;
}
.line-qr-block .line-qr-img {
  flex-shrink: 0; display: inline-block; padding: 6px; background: #fff;
  border-radius: 10px; line-height: 0; transition: transform .25s ease, box-shadow .25s ease;
}
.line-qr-block .line-qr-img:hover { transform: scale(1.03); box-shadow: 0 6px 20px rgba(6,199,85,.25); }
.line-qr-block .line-qr-img img { width: 140px; height: 140px; display: block; }
.line-qr-block .line-qr-body { flex: 1; min-width: 0; }
.line-qr-block .line-qr-title {
  font-family: "Zen Maru Gothic", sans-serif; font-weight: 800; color: var(--line);
  font-size: .95em; margin-bottom: 4px; display: inline-flex; align-items: center; gap: 6px;
}
.line-qr-block .line-qr-sub { font-size: .76em; color: var(--text-light); margin-bottom: 8px; line-height: 1.6; }
.line-qr-block .line-qr-hint { font-size: .74em; color: var(--text-light); line-height: 1.7; }
.line-qr-sp-btn { display: none; }

/* ===== CTA Section (index specific) ===== */
.cta {
  position: relative;
  background: linear-gradient(135deg,rgba(30,58,95,.92),rgba(30,58,95,.88)),
    url('/images/tutoring.jpg') center/cover no-repeat;
  padding: 72px 28px; text-align: center; overflow: hidden;
}
.cta-blob {
  position: absolute; border-radius: 40% 60% 55% 45% / 55% 40% 60% 45%;
  filter: blur(45px); opacity: .1; pointer-events: none;
}
.cta-blob-1 {
  width: 500px; height: 500px;
  background: conic-gradient(from 0deg,rgba(74,144,217,.9),rgba(124,184,240,.6),rgba(74,144,217,.9));
  top: -120px; left: -60px; animation: blobRotate1 28s linear infinite;
}
.cta-blob-2 {
  width: 450px; height: 450px;
  background: conic-gradient(from 180deg,rgba(124,184,240,.7),rgba(240,160,80,.3),rgba(124,184,240,.7));
  bottom: -100px; right: -50px; animation: blobRotate2 36s linear infinite;
}
.cta-noise {
  position: absolute; inset: 0; pointer-events: none; opacity: .03; mix-blend-mode: overlay;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.cta h2 {
  font-family: "Zen Maru Gothic", sans-serif; color: #fff;
  font-size: 1.8em; font-weight: 800; margin-bottom: 14px;
  position: relative; z-index: 1;
}
.cta > p {
  color: rgba(255,255,255,.85); font-size: .95em; margin-bottom: 28px;
  position: relative; z-index: 1;
}
.cta-buttons {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
  position: relative; z-index: 1;
}
.btn-cta-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg,var(--accent),var(--accent-hover));
  color: #fff; padding: 16px 44px; border-radius: var(--radius-full);
  text-decoration: none; font-weight: 700; font-size: 1.05em;
  box-shadow: 0 4px 16px rgba(240,160,80,.35); transition: transform .3s, box-shadow .3s;
}
.btn-cta-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(240,160,80,.45); }
.btn-cta-line {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--line); color: #fff; padding: 16px 44px;
  border-radius: var(--radius-full); text-decoration: none;
  font-weight: 700; font-size: 1.05em;
  box-shadow: 0 4px 16px rgba(6,199,85,.3); transition: transform .3s, box-shadow .3s;
}
.btn-cta-line:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(6,199,85,.4); }
.cta-note { margin-top: 20px; font-size: .85em; color: rgba(255,255,255,.65); position: relative; z-index: 1; }
.cta-note a { color: rgba(255,255,255,.85); text-decoration: none; }
.cta-note a:hover { color: #fff; }

/* ===== Contact form (index) ===== */
.contact-form-section { background: var(--bg-alt); padding: 80px 0; }
.contact-form { max-width: 680px; margin: 0 auto; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-weight: 600; font-size: .88em; color: var(--primary); margin-bottom: 6px; }
.form-label .required { color: #e04040; margin-left: 2px; }
.form-input, .form-select, .form-textarea {
  width: 100%; border: 1px solid rgba(74,144,217,.15); border-radius: 12px;
  padding: 14px 18px; font-family: "Noto Sans JP","Hiragino Sans",Meiryo,sans-serif;
  font-size: .92em; color: var(--text); background: #fff; outline: none;
  transition: border-color .3s ease, box-shadow .3s ease;
  -webkit-appearance: none; appearance: none;
}
.form-select {
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237b8fa3' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 18px center;
  padding-right: 44px;
}
.form-textarea { resize: vertical; line-height: 1.8; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--secondary); box-shadow: 0 0 0 3px rgba(74,144,217,.1);
}
.form-checkbox-group { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 4px; }
.form-checkbox-group label { display: flex; align-items: center; gap: 6px; font-size: .88em; color: var(--text); cursor: pointer; }
.form-checkbox-group input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--secondary); cursor: pointer; }
.form-submit {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(135deg,var(--accent),var(--accent-hover)); color: #fff;
  padding: 16px 56px; border-radius: var(--radius-full); font-weight: 700; font-size: 1em;
  border: none; cursor: pointer; box-shadow: 0 4px 16px rgba(240,160,80,.35);
  transition: transform .3s, box-shadow .3s, opacity .3s;
  font-family: "Noto Sans JP","Hiragino Sans",Meiryo,sans-serif;
  width: 100%; margin-top: 10px;
}
.form-submit:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(240,160,80,.45); }
.form-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; box-shadow: 0 4px 16px rgba(240,160,80,.2); }
.form-success { text-align: center; padding: 48px 24px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); }
.form-success h3 { font-family: "Zen Maru Gothic", sans-serif; color: var(--primary); font-size: 1.3em; margin-bottom: 12px; }
.form-success p { color: var(--text-light); font-size: .92em; line-height: 1.9; }
.form-error { color: #e04040; font-size: .85em; margin-top: 12px; text-align: center; padding: 10px; background: rgba(224,64,64,.06); border-radius: 8px; display: none; }
.form-error.show { display: block; }
.contact-line-note { text-align: center; margin-bottom: 32px; color: var(--text-light); font-size: .95em; line-height: 1.8; }
.contact-line-note strong { color: var(--primary); font-weight: 700; }
.contact-choice { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 860px; margin: 0 auto 36px; }
.choice-card {
  background: #fff; border-radius: var(--radius); padding: 22px 22px 20px;
  box-shadow: var(--shadow); display: flex; flex-direction: column; position: relative;
}
.choice-card.line-card { border: 2px solid var(--line); }
.choice-card.form-card { border: 2px solid var(--secondary); }
.choice-card .choice-head {
  font-family: "Zen Maru Gothic", sans-serif; font-weight: 800; font-size: 1.02em;
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 4px;
}
.choice-card.line-card .choice-head { color: var(--line); }
.choice-card.form-card .choice-head { color: var(--secondary); }
.choice-card .choice-sub { font-size: .78em; color: var(--text-light); margin-bottom: 14px; line-height: 1.7; }
.choice-card .choice-body { flex: 1; }
.choice-card .choice-cta {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--radius-full); text-decoration: none;
  font-weight: 700; font-size: .94em; margin-top: 14px; width: 100%; box-sizing: border-box;
}
.choice-card.line-card .choice-cta { background: var(--line); color: #fff; box-shadow: 0 4px 14px rgba(6,199,85,.3); }
.choice-card.form-card .choice-cta { background: linear-gradient(135deg,var(--accent),var(--accent-hover)); color: #fff; box-shadow: 0 4px 14px rgba(240,160,80,.3); }
.choice-card .choice-cta:hover { transform: translateY(-2px); }
.choice-or { text-align: center; color: var(--text-light); font-size: .82em; margin: -6px 0 6px; letter-spacing: .1em; display: none; }
.choice-or::before, .choice-or::after { content: ""; display: inline-block; width: 40px; height: 1px; background: rgba(74,144,217,.2); vertical-align: middle; margin: 0 12px; }
.choice-card .line-qr-block { margin: 0; border: none; box-shadow: none; padding: 0; background: transparent; gap: 14px; }
.choice-card .line-qr-block .line-qr-title,
.choice-card .line-qr-block .line-qr-sub { display: none; }
.choice-card .line-qr-block .line-qr-img { padding: 0; }
.choice-card .line-qr-block .line-qr-img img { width: 120px; height: 120px; }
.choice-card .line-qr-block .line-qr-hint { font-size: .74em; }

/* ===== Focus rings (index-specific buttons) ===== */
.btn-hero:focus-visible, .btn-hero-sub:focus-visible,
.btn-cta-primary:focus-visible, .btn-cta-line:focus-visible,
.nav-cta:focus-visible, .fc-tel:focus-visible,
.fc-line:focus-visible, .fc-trial:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

/* ===== Responsive (index) ===== */
@media (max-width: 768px) {
  .line-qr-block { display: block; text-align: center; padding: 16px 18px; }
  .line-qr-block .line-qr-img, .line-qr-block .line-qr-hint { display: none; }
  .line-qr-block .line-qr-title { display: flex; justify-content: center; margin-bottom: 6px; }
  .line-qr-block .line-qr-sub { margin-bottom: 12px; text-align: center; }
  .line-qr-sp-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    background: var(--line); color: #fff; padding: 12px 28px;
    border-radius: var(--radius-full); text-decoration: none;
    font-weight: 700; font-size: .92em; box-shadow: 0 4px 14px rgba(6,199,85,.3);
  }
  .hero { padding: 60px 0 50px; }
  .hero .inner { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 1.7em; }
  .hero-right { order: -1; }
  .hero-stat { justify-content: center; }
  .numbers-grid { grid-template-columns: repeat(2,1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; gap: 0; }
  .step-item:not(:last-child)::after { display: none; }
  .cases-grid { grid-template-columns: 1fr; }
  .juku-grid { grid-template-columns: 1fr; }
  .pg-grid { grid-template-columns: repeat(2,1fr); }
  .study-cards { grid-template-columns: 1fr; }
  .voices-grid { grid-template-columns: 1fr; }
  .teacher-content { grid-template-columns: 1fr; text-align: center; }
  .teacher-photo { margin: 0 auto; }
  .form-checkbox-group { flex-direction: column; gap: 8px; }
  .scroll-hint { display: block; }
  .qual-banner { flex-direction: column; align-items: center; text-align: center; padding: 28px 24px; }
  .contact-choice { grid-template-columns: 1fr; gap: 14px; }
  .choice-or { display: block; }
  .choice-card .line-qr-block .line-qr-img,
  .choice-card .line-qr-block .line-qr-hint { display: none; }
  .choice-card .line-qr-block { display: block; }
}
@media (max-width: 480px) {
  .pg-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.5em; }
  .numbers-grid { grid-template-columns: repeat(2,1fr); gap: 12px; }
  .num-item .num { font-size: 1.8em; }
}
@media (max-width: 768px) {
  .hero-blob, .cta-blob, .cta-blob-1, .cta-blob-2,
  .bubble, .float-particle, .features-dots,
  .pg-typing, .thinking-noise,
  .thinking-parallax-1, .thinking-parallax-2,
  .hero-spotlight {
    display: none !important;
  }
  .thinking { background-attachment: scroll; }
}