.option-b-page {
  --option-blue-900: #071b38;
  --option-blue-800: #0b336d;
  --option-blue-700: #0f4b99;
  --option-blue-600: #1b64da;
  --option-blue-500: #347ee9;
  --option-blue-100: #e7f1ff;
  --option-blue-050: #f7faff;
  --option-neutral-900: #191f28;
  --option-neutral-600: #4e5968;
  --option-neutral-200: #dfe5ec;
  --option-font:
    Pretendard, "Pretendard Variable", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Noto Sans KR", sans-serif;
  --hero-b-base-image: none;
  color: var(--option-neutral-900);
  background: #fff;
  font-family: var(--option-font);
  font-weight: 400;
  line-height: 1.5;
}

.option-b-page :focus-visible {
  outline: 3px solid rgba(27, 100, 218, 0.38);
  outline-offset: 4px;
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--option-neutral-200);
  background: rgba(255, 255, 255, 0.94);
}

.site-header__inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  gap: 28px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-right: auto;
  text-decoration: none;
}

.wordmark strong {
  font-size: 1.38rem;
  font-weight: 750;
  letter-spacing: -0.055em;
}

.wordmark__symbol {
  position: relative;
  display: inline-flex;
  width: 30px;
  height: 23px;
}

.wordmark__symbol i {
  position: absolute;
  width: 20px;
  height: 18px;
  border: 2px solid var(--brand-teal);
  border-radius: 7px;
}

.wordmark__symbol i::after {
  position: absolute;
  bottom: -5px;
  left: 5px;
  width: 7px;
  height: 7px;
  border-bottom: 2px solid var(--brand-teal);
  border-left: 2px solid var(--brand-teal);
  content: "";
  transform: skewY(-28deg);
}

.wordmark__symbol i:last-child {
  right: 0;
  bottom: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(24px, 3vw, 48px);
  margin-inline: auto;
}

.main-nav a {
  color: var(--option-neutral-600);
  font-size: 0.92rem;
  font-weight: 680;
  text-decoration: none;
}

.main-nav span {
  margin-left: 4px;
  color: #9ba3aa;
  font-size: 0.75rem;
}

.button {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 0 25px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--small {
  min-height: 44px;
  padding-inline: 20px;
}

.button--primary {
  color: #fff;
  background: var(--option-blue-700);
  box-shadow: 0 12px 26px rgba(15, 75, 153, 0.18);
}

.button--quiet {
  border-color: var(--option-neutral-200);
  color: var(--option-neutral-900);
  background: rgba(255, 255, 255, 0.78);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.hero-b {
  position: relative;
  display: grid;
  min-height: 822px;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 77% 24%, rgba(70, 139, 239, 0.18), transparent 24%),
    radial-gradient(circle at 88% 78%, rgba(24, 183, 181, 0.09), transparent 25%),
    linear-gradient(135deg, #fff 0%, var(--option-blue-050) 46%, #e9f2ff 100%);
}

.hero-b::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 48vw;
  height: 100%;
  border-left: 1px solid rgba(27, 100, 218, 0.08);
  background-image:
    linear-gradient(rgba(27, 100, 218, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27, 100, 218, 0.055) 1px, transparent 1px);
  background-size: 72px 72px;
  content: "";
  mask-image: linear-gradient(to right, transparent, #000 28%);
}

.hero-b__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.14fr 0.86fr;
  align-items: center;
  gap: 34px;
  padding-block: 72px 98px;
}

.hero-wordmark {
  margin: 0 0 26px;
  color: var(--option-blue-700);
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

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

h1 {
  max-width: none;
  margin-bottom: 30px;
  font-size: clamp(3.65rem, 4.35vw, 4.25rem);
  font-weight: 760;
  line-height: 1.02;
  letter-spacing: -0.068em;
}

h1 span {
  display: block;
}

h1 span:last-child {
  white-space: nowrap;
}

h1 em {
  color: var(--option-blue-600);
  font-style: normal;
}

.hero-b__support {
  max-width: 590px;
  margin: 0;
  color: var(--option-neutral-600);
  font-size: 1.16rem;
  line-height: 1.5;
}

.hero-b__visual {
  --option-blue-900: #071b38;
  --option-blue-800: #0b336d;
  --option-blue-700: #0f4b99;
  --option-blue-600: #1b64da;
  --option-blue-500: #347ee9;
  --option-blue-100: #e7f1ff;
  --option-neutral-900: #191f28;
  --option-neutral-600: #4e5968;
  --hero-b-base-image: none;
  position: relative;
  justify-self: end;
  width: min(620px, 46vw);
  aspect-ratio: 620 / 650;
  isolation: isolate;
  transform: translateX(-54px);
}

.hero-b-base-image {
  position: absolute;
  z-index: -4;
  inset: 2% 0 0;
  border-radius: 50%;
  background-image: var(--hero-b-base-image);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  opacity: 0.9;
}

.hero-b__visual::before {
  position: absolute;
  z-index: -3;
  inset: 8% 5% 5%;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 48% 52% 54% 46% / 44% 43% 57% 56%;
  background:
    radial-gradient(circle at 52% 44%, rgba(255, 255, 255, 0.98), rgba(232, 243, 255, 0.72) 46%, rgba(199, 222, 253, 0.18) 72%),
    linear-gradient(145deg, rgba(255, 255, 255, 0.72), rgba(209, 228, 255, 0.3));
  box-shadow:
    inset 0 1px 0 #fff,
    0 40px 90px rgba(27, 100, 218, 0.12);
  content: "";
  transform: rotate(-3deg);
}

.hero-b__visual::after {
  position: absolute;
  z-index: -2;
  inset: 16% 14% 12%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46, 113, 217, 0.19), transparent 66%);
  filter: blur(12px);
  content: "";
}

.ambient {
  position: absolute;
  z-index: -1;
  border: 1px solid rgba(83, 145, 237, 0.18);
  border-radius: 50%;
  animation: ambient-drift 14s ease-in-out infinite alternate;
}

.ambient--one {
  top: 13%;
  left: 18%;
  width: 76%;
  height: 70%;
}

.ambient--two {
  top: 21%;
  left: 27%;
  width: 58%;
  height: 54%;
  animation-delay: -5s;
}

.connection-map {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.connector {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  opacity: 0;
  filter: url(#lineGlow);
}

.connector {
  stroke-dasharray: 1;
  animation-duration: 14s;
  animation-timing-function: cubic-bezier(0.33, 1, 0.68, 1);
  animation-iteration-count: infinite;
}

.connector--sms { animation-name: connector-sms; }
.connector--kakao { animation-name: connector-kakao; }
.connector--naver { animation-name: connector-naver; }
.connector--rcs { animation-name: connector-rcs; }

.signal-point {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  animation-duration: 14s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}

.signal-point--sms { animation-name: signal-sms; }
.signal-point--kakao { animation-name: signal-kakao; }
.signal-point--naver { animation-name: signal-naver; }
.signal-point--rcs { animation-name: signal-rcs; }

.phone-scene {
  --phone-scene-scale: 1;
  --phone-scene-y: -44%;
  position: absolute;
  z-index: 3;
  top: 50%;
  left: 50%;
  width: 270px;
  height: 520px;
  transform: translate(-50%, var(--phone-scene-y)) scale(var(--phone-scene-scale));
  animation: phone-arrive 1.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.phone-shadow {
  position: absolute;
  right: 7px;
  bottom: -10px;
  left: 1px;
  height: 80px;
  border-radius: 50%;
  background: rgba(11, 55, 116, 0.28);
  filter: blur(28px);
  transform: scaleX(0.8);
}

.phone {
  position: absolute;
  top: 28px;
  left: 33px;
  width: 210px;
  height: 430px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 47px;
  background:
    linear-gradient(145deg, rgba(137, 190, 255, 0.9), rgba(18, 77, 160, 0.4) 20%, transparent 42%),
    linear-gradient(145deg, #276cc8, #082d62 62%, #051d43);
  box-shadow:
    22px 30px 45px rgba(8, 43, 92, 0.27),
    -10px -8px 30px rgba(120, 179, 255, 0.22),
    inset 0 0 0 2px rgba(112, 175, 255, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.76);
  transform: perspective(900px) rotateY(-8deg) rotateX(3deg) rotateZ(1deg);
  transform-origin: center;
  animation: phone-float 7s ease-in-out 1.4s infinite;
}

.phone__side {
  position: absolute;
  right: -4px;
  width: 4px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(#4b8ce2, #0a397c);
}

.phone__side--one { top: 105px; height: 52px; }
.phone__side--two { top: 173px; height: 82px; }

.phone__screen {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 38px;
  background:
    radial-gradient(circle at 72% 18%, rgba(110, 177, 255, 0.5), transparent 23%),
    linear-gradient(155deg, #fdfefe 0%, #edf5ff 42%, #d9e9ff 100%);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.9),
    inset 0 -26px 54px rgba(32, 100, 197, 0.12);
}

.phone__status {
  display: flex;
  height: 34px;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  color: #234a7b;
  font-size: 0.47rem;
  font-weight: 800;
}

.phone__status i,
.phone__status b {
  display: block;
  width: 18px;
  height: 6px;
  border-radius: 4px;
  background: #285589;
}

.phone__status i {
  margin-left: auto;
  margin-right: 5px;
  background: linear-gradient(90deg, #285589 28%, transparent 28% 36%, #285589 36% 64%, transparent 64% 72%, #285589 72%);
}

.phone__island {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 64px;
  height: 16px;
  border-radius: 10px;
  background: #07182d;
  transform: translateX(-50%);
}

.phone__brand {
  display: grid;
  margin-top: 23px;
  place-items: center;
  color: var(--option-blue-800);
}

.phone__brand-mark {
  position: relative;
  display: grid;
  width: 66px;
  height: 66px;
  place-items: center;
  margin-bottom: 13px;
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: 22px;
  background: linear-gradient(145deg, #3b85ec, #1455b1);
  box-shadow: 0 15px 28px rgba(21, 87, 182, 0.25);
}

.phone__brand-mark::before {
  width: 34px;
  height: 24px;
  border: 2px solid #fff;
  border-radius: 11px;
  content: "";
}

.phone__brand-mark::after {
  position: absolute;
  bottom: 17px;
  left: 21px;
  width: 9px;
  height: 9px;
  border-bottom: 2px solid #fff;
  border-left: 2px solid #fff;
  content: "";
  transform: skewY(-32deg);
}

.phone__brand-mark i {
  position: absolute;
  top: 31px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #fff;
}

.phone__brand-mark i:first-child { left: 24px; }
.phone__brand-mark i:nth-child(2) { left: 31px; }
.phone__brand-mark i:last-child { left: 38px; }

.phone__brand strong {
  font-size: 0.88rem;
  letter-spacing: 0.08em;
}

.phone__brand small {
  margin-top: 2px;
  color: #6a83a4;
  font-size: 0.43rem;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.phone__message {
  display: grid;
  grid-template-columns: 31px 1fr;
  align-items: center;
  gap: 9px;
  margin-inline: 14px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 8px 20px rgba(22, 74, 142, 0.08);
  backdrop-filter: blur(10px);
}

.phone__message--one { margin-top: 25px; }
.phone__message--two { margin-top: 9px; transform: translateX(7px); }

.phone__message > span {
  width: 31px;
  height: 31px;
  border-radius: 10px;
  background: linear-gradient(145deg, #68c7d9, #258ac2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.phone__message--two > span {
  background: linear-gradient(145deg, #5f91f0, #2b62c7);
}

.phone__message b {
  display: block;
  margin-bottom: 5px;
  color: #294d7a;
  font-size: 0.52rem;
}

.phone__message i {
  display: block;
  width: 92%;
  height: 4px;
  margin-top: 4px;
  border-radius: 3px;
  background: #cbdcf1;
}

.phone__message i:last-child { width: 62%; }

.phone__dock {
  position: absolute;
  right: 16px;
  bottom: 17px;
  left: 16px;
  display: flex;
  height: 42px;
  align-items: center;
  justify-content: space-around;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
  box-shadow: 0 12px 25px rgba(26, 77, 145, 0.1);
  backdrop-filter: blur(12px);
}

.phone__dock i {
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: linear-gradient(145deg, #6ba4ee, #2c6bcb);
}

.phone__dock i:nth-child(2) { border-radius: 50%; background: linear-gradient(145deg, #5fc6c3, #168f9a); }
.phone__dock i:last-child { background: linear-gradient(145deg, #9d9af2, #625bd0); }

.phone__reflection {
  position: absolute;
  top: 15px;
  left: 17px;
  width: 58px;
  height: 220px;
  border-radius: 35px;
  background: linear-gradient(100deg, rgba(255, 255, 255, 0.34), rgba(255, 255, 255, 0));
  pointer-events: none;
  transform: rotate(7deg);
}

.glass-card {
  position: absolute;
  z-index: 4;
  display: grid;
  border: 1px solid rgba(255, 255, 255, 0.78);
  color: #183d6d;
  background: rgb(250, 253, 255);
  box-shadow: 0 15px 36px rgba(15, 75, 153, 0.14);
  opacity: 0;
  backdrop-filter: blur(16px);
  translate: 0 6px;
}

.glass-card--analytics {
  top: -6px;
  right: -20px;
  width: 112px;
  padding: 14px 15px;
  border-radius: 18px;
  animation:
    glass-float 8s ease-in-out 1.4s infinite,
    supporting-delivery 14s ease-in-out infinite;
}

.glass-card--analytics span {
  color: #6b819e;
  font-size: 0.42rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.glass-card--analytics strong {
  margin-top: 3px;
  font-size: 1.25rem;
}

.glass-card--analytics i {
  height: 3px;
  margin-top: 8px;
  border-radius: 4px;
  background: linear-gradient(90deg, #327fe8 78%, #d9e5f4 78%);
}

.glass-card--message {
  bottom: 36px;
  left: -66px;
  grid-template-columns: 38px 1fr;
  align-items: center;
  gap: 10px;
  width: 146px;
  padding: 12px;
  border-radius: 19px;
  animation:
    glass-float 8s ease-in-out -3s infinite,
    supporting-connected 14s ease-in-out infinite;
}

.mini-message {
  position: relative;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(145deg, #3585ed, #1453ae);
}

.mini-message::before {
  width: 22px;
  height: 16px;
  border: 1.5px solid #fff;
  border-radius: 7px;
  content: "";
}

.mini-message i {
  position: absolute;
  top: 18px;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #fff;
}

.mini-message i:first-child { left: 14px; }
.mini-message i:nth-child(2) { left: 18px; }
.mini-message i:last-child { left: 22px; }

.glass-card--message strong,
.glass-card--message small {
  display: block;
}

.glass-card--message strong { font-size: 0.62rem; }
.glass-card--message small { color: #778ca7; font-size: 0.48rem; }

.channel-chip {
  position: absolute;
  z-index: 6;
  display: grid;
  grid-template-columns: 42px 1fr;
  min-width: 132px;
  align-items: center;
  gap: 10px;
  padding: 9px 12px 9px 10px;
  border: 1px solid rgba(255, 255, 255, 0.86);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow:
    0 14px 34px rgba(17, 61, 116, 0.13),
    inset 0 1px 0 rgba(255, 255, 255, 0.95);
  opacity: 0;
  backdrop-filter: blur(15px);
  transform: translateY(11px) scale(0.96);
  animation-duration: 14s;
  animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
  animation-iteration-count: infinite;
}

.channel-chip--sms { top: 62%; left: -1%; animation-name: channel-sms; }
.channel-chip--kakao { top: 57%; right: -1%; animation-name: channel-kakao; }
.channel-chip--naver { top: 27%; left: 0; animation-name: channel-naver; }
.channel-chip--rcs { top: 23%; right: 0; animation-name: channel-rcs; }

.channel-chip__icon {
  position: relative;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  overflow: hidden;
  border-radius: 13px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.channel-chip__icon--sms {
  background: linear-gradient(145deg, #50c6dc, #148cae);
}

.channel-chip__icon--sms svg {
  width: 25px;
  height: 19px;
  overflow: visible;
  fill: none;
  stroke: #fff;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.channel-chip__icon--kakao img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.channel-chip__icon--naver {
  color: #fff;
  background: #03c75a;
  font-size: 1.62rem;
  font-weight: 900;
}

.channel-chip__icon--rcs {
  background: linear-gradient(145deg, #8f89ed, #625bd0);
}

.channel-chip__icon--rcs i,
.channel-chip__icon--rcs i::before {
  width: 22px;
  height: 6px;
  border-radius: 5px;
  background: #fff;
}

.channel-chip__icon--rcs i::before {
  display: block;
  width: 15px;
  margin-top: 10px;
  content: "";
}

.channel-chip strong,
.channel-chip small {
  display: block;
  white-space: nowrap;
}

.channel-chip strong {
  color: #213e63;
  font-size: 0.73rem;
  line-height: 1.1;
}

.channel-chip small {
  margin-top: 4px;
  color: #7389a5;
  font-size: 0.42rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.hero-b__visual-label {
  position: absolute;
  right: 9%;
  bottom: 1%;
  margin: 0;
  color: var(--option-blue-700);
  font-size: 0.61rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.hero-b__foot {
  position: absolute;
  right: 0;
  bottom: 26px;
  left: 0;
  display: flex;
  justify-content: space-between;
  color: #88929d;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.context-preview {
  min-height: 420px;
  display: grid;
  align-items: center;
  background: #fff;
}

.context-preview__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 60px;
  padding-block: 90px;
}

.context-preview p {
  margin: 0 0 18px;
  color: var(--option-blue-600);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.17em;
}

.context-preview h2 {
  margin: 0;
  font-size: clamp(2.7rem, 4.5vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.062em;
}

.context-preview__inner > span {
  max-width: 360px;
  color: #7a8795;
  font-size: 0.86rem;
}

@keyframes phone-arrive {
  from { opacity: 0; transform: translate(-50%, calc(var(--phone-scene-y) + 5%)) scale(var(--phone-scene-scale)); }
  to { opacity: 1; transform: translate(-50%, var(--phone-scene-y)) scale(var(--phone-scene-scale)); }
}

@keyframes phone-float {
  0%, 100% { transform: perspective(900px) rotateY(-8deg) rotateX(3deg) rotateZ(1deg) translateY(0); }
  50% { transform: perspective(900px) rotateY(-6deg) rotateX(2deg) rotateZ(0.6deg) translateY(-7px); }
}

@keyframes ambient-drift {
  from { opacity: 0.46; transform: rotate(-2deg) scale(0.98); }
  to { opacity: 0.72; transform: rotate(3deg) scale(1.025); }
}

@keyframes connector-sms {
  0%, 14% { stroke-dashoffset: 1; opacity: 0; }
  21%, 96.3% { stroke-dashoffset: 0; opacity: 0.88; }
  100% { stroke-dashoffset: 0; opacity: 0; }
}

@keyframes connector-kakao {
  0%, 26% { stroke-dashoffset: 1; opacity: 0; }
  33%, 96.3% { stroke-dashoffset: 0; opacity: 0.88; }
  100% { stroke-dashoffset: 0; opacity: 0; }
}

@keyframes connector-naver {
  0%, 38% { stroke-dashoffset: 1; opacity: 0; }
  45%, 96.3% { stroke-dashoffset: 0; opacity: 0.88; }
  100% { stroke-dashoffset: 0; opacity: 0; }
}

@keyframes connector-rcs {
  0%, 50% { stroke-dashoffset: 1; opacity: 0; }
  57%, 96.3% { stroke-dashoffset: 0; opacity: 0.88; }
  100% { stroke-dashoffset: 0; opacity: 0; }
}

@keyframes signal-sms {
  0%, 20% { opacity: 0; transform: scale(0.5); }
  24%, 96.3% { opacity: 0.9; transform: scale(1); }
  30% { opacity: 0.52; transform: scale(1.8); }
  100% { opacity: 0; transform: scale(1); }
}

@keyframes signal-kakao {
  0%, 32% { opacity: 0; transform: scale(0.5); }
  36%, 96.3% { opacity: 0.9; transform: scale(1); }
  42% { opacity: 0.52; transform: scale(1.8); }
  100% { opacity: 0; transform: scale(1); }
}

@keyframes signal-naver {
  0%, 44% { opacity: 0; transform: scale(0.5); }
  48%, 96.3% { opacity: 0.9; transform: scale(1); }
  54% { opacity: 0.52; transform: scale(1.8); }
  100% { opacity: 0; transform: scale(1); }
}

@keyframes signal-rcs {
  0%, 56% { opacity: 0; transform: scale(0.5); }
  60%, 96.3% { opacity: 0.9; transform: scale(1); }
  66% { opacity: 0.52; transform: scale(1.8); }
  100% { opacity: 0; transform: scale(1); }
}

@keyframes channel-sms {
  0%, 22% { opacity: 0; transform: translateY(11px) scale(0.96); }
  26%, 96.3% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(0) scale(1); }
}

@keyframes channel-kakao {
  0%, 34% { opacity: 0; transform: translateY(11px) scale(0.96); }
  38%, 96.3% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(0) scale(1); }
}

@keyframes channel-naver {
  0%, 46% { opacity: 0; transform: translateY(11px) scale(0.96); }
  50%, 96.3% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(0) scale(1); }
}

@keyframes channel-rcs {
  0%, 58% { opacity: 0; transform: translateY(11px) scale(0.96); }
  62%, 96.3% { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(0) scale(1); }
}

@keyframes glass-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes supporting-delivery {
  0%, 78% { opacity: 0; translate: 0 6px; scale: 0.98; }
  82%, 96.3% { opacity: 1; translate: 0 0; scale: 1; }
  100% { opacity: 0; translate: 0 2px; scale: 1; }
}

@keyframes supporting-connected {
  0%, 68% { opacity: 0; translate: 0 6px; scale: 0.98; }
  72%, 96.3% { opacity: 1; translate: 0 0; scale: 1; }
  100% { opacity: 0; translate: 0 2px; scale: 1; }
}

@media (max-width: 1100px) {
  .hero-b__grid {
    grid-template-columns: 1.08fr 0.92fr;
  }

  .hero-b__visual {
    width: min(570px, 48vw);
  }

  h1 {
    font-size: clamp(3.25rem, 5.4vw, 4rem);
  }

  .channel-chip {
    min-width: 120px;
    grid-template-columns: 38px 1fr;
    padding: 8px 10px 8px 8px;
  }

  .channel-chip__icon {
    width: 38px;
    height: 38px;
  }
}

@media (max-width: 980px) {
  .hero-b__grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero-b__content {
    padding-top: 36px;
  }

  .hero-b__visual {
    justify-self: center;
    width: min(600px, 86vw);
    transform: none;
  }

  .context-preview__inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header__inner {
    min-height: 68px;
    gap: 12px;
  }

  .main-nav {
    display: none;
  }

  .button--small {
    min-height: 40px;
    padding-inline: 16px;
  }

  .hero-b {
    min-height: 0;
  }

  .hero-b::before {
    width: 100%;
    border-left: 0;
    mask-image: linear-gradient(to bottom, transparent, #000 22%);
  }

  .hero-b__grid {
    gap: 16px;
    padding: 72px 0 72px;
  }

  h1 {
    font-size: clamp(3.55rem, 16vw, 4.4rem);
  }

  h1 span:last-child {
    white-space: normal;
  }

  .hero-b__support br {
    display: none;
  }

  .button-row {
    margin-top: 34px;
  }

  .hero-b__visual {
    width: min(100%, 470px);
    margin-top: 8px;
  }

  .phone-scene {
    --phone-scene-scale: 0.82;
    --phone-scene-y: -42%;
    width: 230px;
    height: 450px;
  }

  .phone {
    left: 10px;
  }

  .glass-card--analytics { right: -44px; }
  .glass-card--message { left: -78px; }

  .channel-chip {
    min-width: 105px;
    grid-template-columns: 32px 1fr;
    gap: 7px;
    padding: 7px 9px 7px 7px;
    border-radius: 14px;
  }

  .channel-chip__icon {
    width: 32px;
    height: 32px;
    border-radius: 10px;
  }

  .channel-chip__icon--naver {
    font-size: 1.25rem;
  }

  .channel-chip__icon--sms svg {
    width: 20px;
    height: 15px;
  }

  .channel-chip__icon--rcs i,
  .channel-chip__icon--rcs i::before {
    width: 18px;
    height: 5px;
  }

  .channel-chip__icon--rcs i::before {
    width: 12px;
    margin-top: 8px;
  }

  .channel-chip strong { font-size: 0.61rem; }
  .channel-chip small { font-size: 0.35rem; }
  .channel-chip--sms { left: 0; }
  .channel-chip--kakao { right: 0; }
  .channel-chip--naver { left: 0; }
  .channel-chip--rcs { right: 0; }

  .hero-b__visual-label {
    display: none;
  }

  .hero-b__foot {
    display: none;
  }

  .context-preview {
    min-height: 360px;
  }

  .context-preview__inner {
    padding-block: 70px;
  }

  .context-preview h2 {
    font-size: clamp(2.55rem, 11vw, 3.2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    animation-iteration-count: 1 !important;
  }

  .connector {
    stroke-dashoffset: 0;
    opacity: 0.76;
  }

  .signal-point,
  .channel-chip {
    opacity: 1;
    transform: none;
  }

  .glass-card {
    opacity: 1;
    translate: none;
    scale: 1;
  }

  .phone-scene {
    opacity: 1;
    transform: translate(-50%, var(--phone-scene-y)) scale(var(--phone-scene-scale));
  }
}