:root {
  --bg: #f7f9fc;
  --bg-soft: #eef5ff;
  --surface: #ffffff;
  --surface-soft: #f3f6fb;
  --text: #101828;
  --muted: #667085;
  --muted-strong: #475467;
  --line: #d9e2ee;
  --line-soft: #e8eef6;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-soft: #eff6ff;
  --cyan: #0891b2;
  --purple: #6d28d9;
  --dark: #0b1220;
  --success: #047857;
  --danger: #dc2626;
  --radius-xs: 8px;
  --radius-sm: 10px;
  --radius: 12px;
  --radius-lg: 14px;
  --container: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 18rem, var(--bg) 100%);
  font-family: var(--font);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

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

h1,
h2,
h3,
h4,
p,
figure {
  margin-top: 0;
}

p {
  color: var(--muted);
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.narrow {
  max-width: 860px;
}

.section {
  padding: 92px 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  color: white;
  background: var(--primary);
  border-radius: var(--radius-sm);
  transform: translateY(-140%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(217, 226, 238, 0.78);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: white;
  font-size: 0.84rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  background: var(--dark);
  border-radius: var(--radius-sm);
}

.brand-text {
  display: grid;
  gap: 1px;
  line-height: 1.25;
}

.brand-text strong {
  font-size: 0.98rem;
  letter-spacing: -0.02em;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.74rem;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  color: var(--muted-strong);
  font-size: 0.9rem;
  font-weight: 700;
}

.nav a,
.footer-nav a {
  transition: color 0.16s ease;
}

.nav a:hover,
.footer-nav a:hover {
  color: var(--primary);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  color: white;
  font-size: 0.88rem;
  font-weight: 800;
  background: var(--text);
  border-radius: var(--radius-sm);
}

.hero {
  min-height: calc(100svh - 68px);
  padding: 56px 0 54px;
  display: grid;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: clamp(36px, 6vw, 76px);
  align-items: center;
}

.hero-copy {
  padding: 16px 0;
}

.eyebrow,
.section-label {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin: 0 0 18px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1 {
  max-width: 660px;
  margin-bottom: 20px;
  font-size: clamp(2.55rem, 4.6vw, 4.3rem);
  line-height: 1.03;
  letter-spacing: -0.045em;
  word-break: keep-all;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.22rem;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.hero-lead {
  max-width: 660px;
  margin-bottom: 14px;
  color: #23324d;
  font-size: clamp(1.14rem, 2.2vw, 1.45rem);
  font-weight: 750;
  line-height: 1.6;
}

.hero-sub {
  max-width: 640px;
  margin-bottom: 24px;
  font-size: 1rem;
}

.hero-actions,
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 850;
  letter-spacing: -0.01em;
  transition:
    transform 0.16s ease,
    background 0.16s ease,
    border-color 0.16s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: white;
  background: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  color: var(--text);
  background: white;
  border-color: var(--line);
}

.btn-secondary:hover {
  border-color: #b8c6d8;
  background: #fbfdff;
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
}

.trust-list li {
  padding: 6px 10px;
  color: var(--muted-strong);
  font-size: 0.84rem;
  font-weight: 750;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xs);
}

.hero-visual {
  min-width: 0;
}

.hero-screen-board {
  position: relative;
  min-height: 640px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #f4f8ff, #edf4ff);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}

.hero-phone-shot {
  position: absolute;
  bottom: 30px;
  width: clamp(190px, 26vw, 285px);
  border-radius: 30px;
  filter: drop-shadow(0 20px 28px rgba(16, 24, 40, 0.22));
}

.hero-phone-shot-main {
  left: 50%;
  z-index: 2;
  transform: translateX(-50%);
}

.hero-phone-shot-profile,
.hero-phone-shot-event {
  width: clamp(165px, 21vw, 238px);
  opacity: 0.94;
}

.hero-phone-shot-profile {
  left: 5%;
  transform: rotate(-2deg);
}

.hero-phone-shot-event {
  right: 5%;
  transform: rotate(2deg);
}

.mock-note {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

.problem-section {
  padding-top: 44px;
}

.problem-section .narrow {
  padding: clamp(28px, 5vw, 52px);
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.problem-section p:last-child {
  margin-bottom: 0;
}

.section-head {
  max-width: 820px;
  margin-bottom: 40px;
}

.section-head p {
  font-size: 1.02rem;
}

.features-section {
  background: white;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: white;
}

.feature-card {
  min-height: 260px;
  padding: 28px 22px;
  border-right: 1px solid var(--line-soft);
  background: white;
}

.feature-card:last-child {
  border-right: 0;
}

.feature-card-accent {
  color: var(--text);
  background: var(--primary-soft);
}

.feature-card p,
.feature-card-accent p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.feature-number {
  display: block;
  margin-bottom: 42px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.feature-preview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.feature-preview figure {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  align-items: center;
  margin-bottom: 0;
  padding: 18px;
  background: var(--surface-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.feature-preview img {
  width: 110px;
  border-radius: 18px;
  filter: drop-shadow(0 10px 16px rgba(16, 24, 40, 0.18));
}

.feature-preview figcaption {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 750;
  line-height: 1.55;
}

.screens-section {
  background: var(--bg);
}

.screen-gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.screenshot-card {
  display: grid;
  grid-column: span 4;
  gap: 24px;
  align-content: start;
  padding: 22px;
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.screenshot-card-wide {
  grid-column: 1 / -1;
  grid-template-columns: minmax(240px, 0.74fr) minmax(0, 1fr);
  align-items: center;
  padding: 28px;
}

.screenshot-figure {
  display: grid;
  place-items: center;
  min-height: 420px;
  margin-bottom: 0;
  padding: 18px;
  background: #eef4fb;
  border-radius: var(--radius);
}

.screenshot-card-wide .screenshot-figure {
  min-height: 520px;
}

.screenshot-figure img {
  width: min(100%, 220px);
  border-radius: 28px;
  filter: drop-shadow(0 18px 24px rgba(16, 24, 40, 0.2));
}

.screenshot-card-wide .screenshot-figure img {
  width: min(100%, 260px);
}

.screenshot-copy {
  align-self: center;
}

.screenshot-copy h3 {
  margin-bottom: 10px;
  font-size: 1.35rem;
}

.screenshot-copy p {
  margin-bottom: 18px;
}

.screen-number {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--primary);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.1em;
}

.screen-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.screen-points li {
  padding: 6px 9px;
  color: var(--muted-strong);
  font-size: 0.82rem;
  font-weight: 750;
  background: var(--surface-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xs);
}

.screen-note {
  margin-top: 20px;
}

.beta-section {
  background: linear-gradient(180deg, #ffffff, #f6f9fe);
}

.beta-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(420px, 1fr);
  gap: 34px;
  align-items: start;
}

.beta-copy {
  position: sticky;
  top: 92px;
  padding: 4px 0;
}

.metric-card {
  margin-top: 26px;
  padding: 22px;
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.metric-card strong {
  display: block;
  margin-bottom: 12px;
  font-size: 0.96rem;
}

.metric-card ul {
  padding-left: 1.1em;
  margin: 0;
  color: var(--muted);
}

.form-card {
  padding: clamp(20px, 4vw, 32px);
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.form-grid,
.business-form {
  display: grid;
  gap: 18px;
}

.field,
.business-form label {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.field span,
.field legend,
.business-form span {
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 800;
}

.field b,
.business-form b {
  color: var(--primary);
  font-size: 0.75rem;
}

input,
textarea,
select {
  width: 100%;
  color: var(--text);
  background: white;
  border: 1px solid #cfd9e7;
  border-radius: var(--radius-sm);
  outline: 0;
  transition:
    border-color 0.16s ease,
    box-shadow 0.16s ease,
    background 0.16s ease;
}

input,
select {
  min-height: 48px;
  padding: 0 13px;
}

textarea {
  min-height: 118px;
  padding: 12px 13px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

fieldset {
  padding: 0;
  margin: 0;
  border: 0;
}

.checkbox-grid,
.radio-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.checkbox-grid label,
.radio-grid label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 11px;
  color: var(--muted-strong);
  font-size: 0.9rem;
  font-weight: 750;
  background: var(--surface-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xs);
}

.checkbox-grid input,
.radio-grid input {
  width: 16px;
  min-height: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--primary);
}

#streamer-count,
.field small {
  color: var(--muted);
  font-size: 0.82rem;
}

.form-policy {
  margin: 18px 0 0;
  font-size: 0.82rem;
}

.form-actions {
  margin-top: 18px;
}

.form-status {
  min-height: 1.5em;
  margin: 12px 0 0;
  font-size: 0.9rem;
  font-weight: 750;
}

.form-status.success {
  color: var(--success);
}

.form-status.error {
  color: var(--danger);
}

.thanks-card {
  padding: 24px;
  background: var(--primary-soft);
  border: 1px solid #c9dcff;
  border-radius: var(--radius-lg);
}

.thanks-card h3 {
  margin-bottom: 8px;
}

.thanks-card p {
  margin-bottom: 0;
}

.business-section {
  padding: 70px 0;
  background: #f4f7fb;
}

.business-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: 34px;
  padding: clamp(24px, 4vw, 36px);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.business-card h2 {
  font-size: clamp(1.75rem, 3vw, 2.45rem);
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.product-tags span {
  padding: 6px 9px;
  color: var(--muted-strong);
  font-size: 0.82rem;
  font-weight: 750;
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xs);
}

.business-form {
  align-self: start;
  padding: 20px;
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.policy-section {
  background: white;
}

.policy-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.policy-grid article {
  padding: 28px;
  background: var(--surface-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.policy-grid h2 {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
}

.policy-grid p:last-child {
  margin-bottom: 0;
}

.site-footer {
  padding: 34px 0;
  color: var(--muted);
  background: white;
  border-top: 1px solid var(--line-soft);
}

.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  font-size: 0.86rem;
  font-weight: 700;
}

.copyright {
  margin: 0;
  font-size: 0.84rem;
}

.subpage-main {
  padding: 72px 0 96px;
}

.subpage-panel {
  max-width: 860px;
  padding: clamp(24px, 5vw, 48px);
  background: white;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
}

.subpage-panel h1 {
  max-width: 760px;
  margin-bottom: 16px;
  font-size: clamp(2.1rem, 5vw, 3.6rem);
}

.subpage-panel h2 {
  margin-top: 34px;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
}

.subpage-panel ul {
  padding-left: 1.2em;
  color: var(--muted);
}

.subpage-panel li + li {
  margin-top: 8px;
}

.subpage-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

@media (max-width: 1080px) {
  .hero-grid,
  .beta-grid,
  .business-card {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-copy {
    max-width: 760px;
  }

  .beta-copy {
    position: static;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-card {
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .feature-card:nth-child(odd) {
    border-right: 1px solid var(--line-soft);
  }

  .feature-card:nth-last-child(-n + 1) {
    border-bottom: 0;
  }

  .feature-preview {
    grid-template-columns: 1fr;
  }

  .screen-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .screenshot-card,
  .screenshot-card-wide {
    grid-column: auto;
  }

  .screenshot-card-wide {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .section {
    padding: 68px 0;
  }

  .header-inner {
    min-height: 62px;
  }

  .nav {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .hero {
    padding-top: 46px;
  }

  .hero-grid {
    gap: 28px;
  }

  h1 {
    font-size: clamp(2.4rem, 12vw, 3.25rem);
    letter-spacing: -0.04em;
  }

  h2 {
    font-size: clamp(1.95rem, 9vw, 3rem);
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-screen-board {
    min-height: 430px;
  }

  .hero-phone-shot {
    bottom: 22px;
    width: 190px;
    border-radius: 24px;
  }

  .hero-phone-shot-profile,
  .hero-phone-shot-event {
    width: 154px;
  }

  .hero-phone-shot-profile {
    left: -18px;
  }

  .hero-phone-shot-event {
    right: -18px;
  }

  .problem-section {
    padding-top: 20px;
  }

  .problem-section .narrow,
  .form-card,
  .business-card,
  .policy-grid article {
    padding: 22px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .feature-card,
  .feature-card:nth-child(odd) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .feature-card:last-child {
    border-bottom: 0;
  }

  .feature-number {
    margin-bottom: 18px;
  }

  .feature-preview figure {
    grid-template-columns: 90px 1fr;
    padding: 14px;
  }

  .feature-preview img {
    width: 90px;
    border-radius: 16px;
  }

  .screen-gallery,
  .policy-grid {
    grid-template-columns: 1fr;
  }

  .screenshot-card,
  .screenshot-card-wide {
    padding: 18px;
  }

  .screenshot-figure,
  .screenshot-card-wide .screenshot-figure {
    min-height: 360px;
  }

  .screenshot-figure img,
  .screenshot-card-wide .screenshot-figure img {
    width: min(100%, 210px);
  }

  .checkbox-grid,
  .radio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    justify-items: start;
  }

  .footer-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 420px) {
  .checkbox-grid,
  .radio-grid {
    grid-template-columns: 1fr;
  }

  .hero-screen-board {
    min-height: 390px;
  }

  .hero-phone-shot {
    width: 172px;
  }

  .hero-phone-shot-profile,
  .hero-phone-shot-event {
    width: 136px;
  }
}