* {
  box-sizing: border-box;
}

/* Local utility fallback.
   The page is intentionally CDN-light, but some user browsers block Tailwind CDN.
   These utilities cover every Tailwind class used in index.html so layout never collapses. */
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.grid { display: grid; }
.hidden { display: none !important; }
.h-16 { height: 4rem; }
.max-w-6xl { max-width: 72rem; }
.max-w-\[860px\] { max-width: 860px; }
.grid-cols-1 { grid-template-columns: minmax(0, 1fr); }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-6 { gap: 1.5rem; }
.gap-7 { gap: 1.75rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }
.px-0 { padding-left: 0; padding-right: 0; }
.px-5 { padding-left: 1.25rem; padding-right: 1.25rem; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.pt-28 { padding-top: 7rem; }
.pt-24 { padding-top: 6rem; }
.pb-20 { padding-bottom: 5rem; }
.pb-14 { padding-bottom: 3.5rem; }
.font-sans { font-family: Pretendard, system-ui, -apple-system, BlinkMacSystemFont, sans-serif; }
.font-bold { font-weight: 700; }
.text-\[15px\] { font-size: 15px; }
.text-ink { color: #191f28; }
.text-grayText { color: #4e5968; }
.bg-base { background: #f7f8fa; }
.antialiased { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

@media (min-width: 640px) {
  .sm\:block { display: block; }
  .sm\:flex-row { flex-direction: row; }
  .sm\:items-center { align-items: center; }
  .sm\:justify-between { justify-content: space-between; }
  .sm\:px-5 { padding-left: 1.25rem; padding-right: 1.25rem; }
}

@media (min-width: 768px) {
  .md\:flex { display: flex; }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-\[1fr_0\.86fr\] { grid-template-columns: 1fr 0.86fr; }
  .lg\:grid-cols-\[0\.78fr_1\.22fr\] { grid-template-columns: 0.78fr 1.22fr; }
  .lg\:grid-cols-\[0\.86fr_1\.14fr\] { grid-template-columns: 0.86fr 1.14fr; }
  .lg\:items-center { align-items: center; }
  .lg\:items-start { align-items: start; }
  .lg\:pt-32 { padding-top: 8rem; }
  .lg\:pt-28 { padding-top: 7rem; }
}

html {
  scroll-behavior: smooth;
  background: #f7f8fa;
}

body {
  margin: 0;
  word-break: keep-all;
}

a {
  text-decoration: none;
}

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

.topbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  border-bottom: 1px solid rgba(229, 232, 235, 0.9);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #191f28;
}

.brand-logo {
  width: auto;
  height: 42px;
  object-fit: contain;
}

.topbar a:not(.top-cta):hover {
  color: #3182f6;
}

.top-cta,
.primary-btn,
.secondary-btn,
.submit-btn,
.floating-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 0;
  border-radius: 14px;
  font-weight: 900;
  transition: transform 0.22s ease, background-color 0.22s ease, box-shadow 0.22s ease;
  cursor: pointer;
}

.top-cta {
  min-height: 40px;
  padding: 0 16px;
  background: #191f28;
  color: #fff;
  font-size: 14px;
}

.primary-btn {
  gap: 8px;
  padding: 0 22px;
  background: #3182f6;
  color: #fff;
  box-shadow: 0 14px 32px rgba(49, 130, 246, 0.24);
}

.secondary-btn {
  padding: 0 22px;
  background: #fff;
  color: #191f28;
  box-shadow: inset 0 0 0 1px #e5e8eb;
}

.submit-btn {
  width: 100%;
  margin-top: 18px;
  background: #3182f6;
  color: #fff;
  font-size: 17px;
}

.top-cta:hover,
.primary-btn:hover,
.secondary-btn:hover,
.submit-btn:hover,
.floating-cta:hover {
  transform: translateY(-1px);
}

.hero {
  min-height: auto;
  background:
    radial-gradient(circle at 82% 12%, rgba(49, 130, 246, 0.14), transparent 360px),
    linear-gradient(180deg, #fff 0%, #f7f8fa 76%);
}

.eyebrow {
  margin: 0;
  color: #3182f6;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.hero h1 {
  margin: 16px 0 0;
  color: #191f28;
  font-size: clamp(36px, 5.4vw, 64px);
  font-weight: 950;
  letter-spacing: -0.055em;
  line-height: 1.12;
}

.hero-copy {
  max-width: 560px;
  margin: 20px 0 0;
  color: #4e5968;
  font-size: clamp(16px, 1.8vw, 18px);
  font-weight: 600;
  line-height: 1.68;
  letter-spacing: -0.025em;
}

.hero-points {
  display: grid;
  max-width: 560px;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 26px;
}

.hero-points div {
  min-height: 78px;
  padding: 14px;
  border-radius: 18px;
  background: #fff;
  box-shadow: inset 0 0 0 1px #e5e8eb;
}

.hero-points strong {
  display: block;
  color: #191f28;
  font-size: 17px;
  font-weight: 950;
  letter-spacing: -0.045em;
}

.hero-points span {
  display: block;
  margin-top: 6px;
  color: #8b95a1;
  font-size: 13px;
  font-weight: 800;
  line-height: 1.38;
}

.hero-card {
  overflow: hidden;
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 28px 80px rgba(25, 31, 40, 0.11);
}

.hero-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid #f2f4f6;
}

.hero-card-head span {
  color: #8b95a1;
  font-size: 14px;
  font-weight: 850;
}

.hero-card-head strong {
  color: #191f28;
  font-size: 20px;
  font-weight: 950;
}

.board-visual {
  position: relative;
  display: grid;
  min-height: 330px;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(49, 130, 246, 0.04), rgba(255, 107, 0, 0.05)),
    #ffffff;
}

.hero-board-image {
  width: min(88%, 440px);
  border-radius: 18px;
  object-fit: contain;
  filter: drop-shadow(0 22px 34px rgba(25, 31, 40, 0.14));
}

.summary-list {
  padding: 10px 18px 20px;
}

.summary-list div,
.tds-row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: center;
  padding: 13px 6px;
  border-bottom: 1px solid #f2f4f6;
}

.summary-list div:last-child,
.tds-row:last-child {
  border-bottom: 0;
}

.summary-list iconify-icon,
.tds-row iconify-icon,
.notice-list iconify-icon {
  color: #3182f6;
  font-size: 21px;
}

.summary-list span {
  color: #191f28;
  font-size: 15px;
  font-weight: 850;
}

.section {
  padding: 82px 0;
}

.compact-section {
  padding: 72px 0;
}

.section.white {
  background: #fff;
}

.section-head {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-head h2,
.lead-section h2,
.detail-head h2 {
  margin: 10px 0 0;
  color: #191f28;
  font-size: clamp(28px, 3.8vw, 42px);
  font-weight: 950;
  letter-spacing: -0.065em;
  line-height: 1.12;
}

.section-head p:not(.eyebrow),
.lead-copy,
.detail-head p {
  margin-top: 18px;
  color: #4e5968;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.72;
}

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

.problem-grid article {
  padding: 24px;
  border-radius: 22px;
  background: #f7f8fa;
}

.problem-grid article.after {
  background: #191f28;
  color: #fff;
}

.problem-grid span {
  color: #8b95a1;
  font-size: 14px;
  font-weight: 900;
}

.problem-grid .after span {
  color: #8bbcff;
}

.problem-grid h3 {
  margin: 14px 0 24px;
  font-size: 20px;
  font-weight: 950;
  letter-spacing: -0.045em;
  line-height: 1.36;
}

.problem-grid ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  color: #4e5968;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  list-style: none;
}

.problem-grid .after ul {
  color: rgba(255, 255, 255, 0.76);
}

.tds-list,
.option-stack,
.lead-form {
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(25, 31, 40, 0.08);
}

.tds-list {
  overflow: hidden;
}

.tds-row {
  grid-template-columns: 56px 1fr;
  padding: 20px 24px;
}

.tds-row iconify-icon {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 16px;
  background: rgba(49, 130, 246, 0.09);
}

.tds-row strong {
  display: block;
  color: #191f28;
  font-size: 18px;
  font-weight: 950;
  letter-spacing: -0.04em;
}

.tds-row p {
  margin: 7px 0 0;
  color: #4e5968;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.62;
}

.sticky-copy {
  position: sticky;
  top: 96px;
}

.option-stack {
  display: grid;
  gap: 10px;
  padding: 16px;
}

.option-stack article {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  border-radius: 18px;
  background: #f7f8fa;
}

.option-stack article.selected {
  background: #e8f3ff;
}

.option-stack strong {
  color: #191f28;
  font-size: 23px;
  font-weight: 950;
  letter-spacing: -0.055em;
}

.option-stack span {
  color: #4e5968;
  font-size: 16px;
  font-weight: 750;
}

.install-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.install-options div {
  min-height: 132px;
  padding: 18px;
  border-radius: 20px;
  background: #191f28;
  color: #fff;
}

.install-options iconify-icon {
  color: #8bbcff;
  font-size: 28px;
}

.install-options strong,
.install-options span {
  display: block;
}

.install-options strong {
  margin-top: 14px;
  font-size: 18px;
  font-weight: 950;
}

.install-options span {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 15px;
  font-weight: 750;
}

.lead-section {
  color: #fff;
  background:
    radial-gradient(circle at 85% 20%, rgba(49, 130, 246, 0.28), transparent 360px),
    #191f28;
}

.lead-section .eyebrow {
  color: #8bbcff;
}

.lead-section h2 {
  color: #fff;
}

.lead-copy {
  color: rgba(255, 255, 255, 0.72);
}

.notice-list {
  display: grid;
  gap: 12px;
  margin-top: 28px;
  color: rgba(255, 255, 255, 0.74);
  font-weight: 750;
}

.notice-list p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.lead-form {
  padding: 20px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.lead-form label {
  display: grid;
  gap: 8px;
  color: #4e5968;
  font-size: 14px;
  font-weight: 850;
}

.lead-form label.wide {
  grid-column: 1 / -1;
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  min-height: 48px;
  border: 1px solid #e5e8eb;
  border-radius: 13px;
  background: #f9fafb;
  padding: 0 16px;
  color: #191f28;
  font: inherit;
  font-weight: 750;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.lead-form textarea {
  min-height: 104px;
  padding-top: 14px;
  resize: vertical;
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  border-color: #3182f6;
  background: #fff;
  box-shadow: 0 0 0 4px rgba(49, 130, 246, 0.12);
}

.privacy-row {
  display: flex !important;
  align-items: center;
  gap: 10px !important;
  margin-top: 16px;
}

.privacy-detail {
  margin-top: 16px;
  border: 1px solid #e5e8eb;
  border-radius: 16px;
  background: #f9fafb;
}

.privacy-detail summary {
  min-height: 48px;
  padding: 14px 16px;
  color: #191f28;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
  list-style-position: inside;
}

.privacy-copy {
  max-height: 240px;
  overflow: auto;
  padding: 0 16px 16px 16px;
  color: #4e5968;
  font-size: 13px;
  font-weight: 650;
  line-height: 1.62;
}

.privacy-copy h3 {
  margin: 16px 0 8px;
  color: #191f28;
  font-size: 13px;
  font-weight: 950;
}

.privacy-copy h3:first-child {
  margin-top: 4px;
}

.privacy-copy p {
  margin: 0 0 8px;
}

.privacy-copy ul {
  display: grid;
  gap: 6px;
  margin: 0 0 10px;
  padding-left: 18px;
}

.privacy-row input {
  width: 18px;
  min-height: 18px;
  accent-color: #3182f6;
}

.submit-btn:disabled {
  cursor: progress;
}

.form-message {
  min-height: 22px;
  margin: 12px 0 0;
  color: #4e5968;
  font-size: 14px;
  font-weight: 750;
}

.detail-section {
  padding: 0 0 40px;
  background: #fff;
}

.detail-head {
  padding: 0 20px 28px;
}

.detail-image {
  width: 100%;
  border-radius: 0;
  background: #fff;
  box-shadow: none;
}

.floating-cta {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 45;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  background: #3182f6;
  color: #fff;
  box-shadow: 0 14px 32px rgba(49, 130, 246, 0.28);
}

.success-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.success-modal.is-open {
  display: flex;
}

.success-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(25, 31, 40, 0.48);
  backdrop-filter: blur(8px);
}

.success-dialog {
  position: relative;
  width: min(100%, 420px);
  border-radius: 28px;
  background: #fff;
  padding: 34px 26px 24px;
  text-align: center;
  box-shadow: 0 28px 90px rgba(25, 31, 40, 0.24);
  animation: modalPop 0.26s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.success-icon {
  display: grid;
  width: 58px;
  height: 58px;
  margin: 0 auto 18px;
  place-items: center;
  border-radius: 21px;
  background: #e8f3ff;
  color: #3182f6;
  font-size: 34px;
}

.success-dialog h2 {
  margin: 0;
  color: #191f28;
  font-size: 24px;
  font-weight: 950;
  letter-spacing: -0.045em;
}

.success-dialog p {
  margin: 10px auto 22px;
  color: #4e5968;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.58;
}

.success-close {
  display: inline-flex;
  width: 100%;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 15px;
  background: #3182f6;
  color: #fff;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

.success-close:active {
  transform: scale(0.99);
}

@keyframes modalPop {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.footer {
  color: #8b95a1;
  background: #fff;
  border-top: 1px solid #e5e8eb;
  font-size: 14px;
  font-weight: 700;
}

.footer strong {
  color: #191f28;
}

.hidden {
  display: none !important;
}

@media (max-width: 860px) {
  .hero-points,
  .problem-grid,
  .form-grid,
  .install-options {
    grid-template-columns: 1fr;
  }

  .hero-card {
    border-radius: 28px;
  }

  .hero-points div {
    min-height: auto;
  }

  .section {
    padding: 78px 0;
  }

  .problem-grid article {
    padding: 24px;
  }

  .sticky-copy {
    position: static;
  }

  .option-stack article {
    align-items: flex-start;
    flex-direction: column;
  }

  .lead-form {
    padding: 18px;
    border-radius: 24px;
  }
}

@media (max-width: 520px) {
  .top-cta {
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }

  .brand-logo {
    height: 34px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .board-visual {
    min-height: 310px;
  }

  .hero-board-image {
    width: 92%;
  }

  .floating-cta {
    left: 18px;
    right: 18px;
  }
}