/* Web Kai — Digital brand presentation */

:root {
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-panel: 1.2s;
  --dur-mask: 1.1s;
  --header-h: 68px;
  --ink: #0a0c10;
  --ink-soft: #2a3340;
  --text-strong: #050608;
  --text-body: #10161f;
  --text-muted: rgba(8, 10, 14, 0.7);
  --read-veil: rgba(255, 255, 255, 0.88);
  --panel-max: 1240px;
  --panel-pad-x: clamp(32px, 6vw, 96px);
  --silver: #e8ecf2;
  --field-line: rgba(255, 255, 255, 0.55);
  --field-bg: rgba(255, 255, 255, 0.08);
  --ir-cyan: rgba(118, 218, 242, 0.55);
  --ir-blue: rgba(138, 182, 255, 0.45);
  --ir-purple: rgba(192, 162, 255, 0.48);
  --ir-pink: rgba(255, 172, 218, 0.4);
  --ir-yellow: rgba(255, 232, 168, 0.32);
  --ir-green: rgba(162, 238, 198, 0.3);
  --font-ui: "Inter", "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;
  --font-ja: "Inter", "Helvetica Neue", Arial, "Noto Sans JP", sans-serif;
}

/* Legacy off */
.sky-backdrop,
.luxury-bg,
.hero-visual,
.cursor-glow,
.page-intro,
.section-panel,
.service-card,
.service-item,
.service-list {
  display: none !important;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  overflow-x: clip;
}

body {
  margin: 0;
  background: #eceff3;
  color: var(--ink-soft);
  font-family: var(--font-ja);
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Logo wordmark — never override with Inter */
.brand-mark > span,
.brand-mark .trade-name,
.loading-screen__word {
  font-family: "Syne", "Zen Kaku Gothic New", sans-serif !important;
  font-weight: 600 !important;
  letter-spacing: 0.01em !important;
  text-transform: none !important;
}

.brand-logo,
.brand-logo--hero,
.loading-screen__logo {
  object-fit: contain;
}

.ui-label {
  font-family: var(--font-ui);
  letter-spacing: 0.26em;
  text-transform: uppercase;
  font-weight: 300;
  font-size: 0.68rem;
}

/* --- Iridescent background (reflection film, not flat pastel) ------------ */

body::before {
  display: none !important;
  content: none !important;
}

.bg-world {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.bg-layer,
.iridescent-bg .bg-layer {
  position: absolute;
  filter: blur(44px) saturate(1.28);
  transition: transform 1.6s var(--ease), opacity 1s ease;
}

.bg-layer--a {
  inset: -40%;
  opacity: 0.74;
  background:
    repeating-linear-gradient(
      108deg,
      transparent 0,
      transparent 18px,
      rgba(255, 255, 255, 0.04) 18px,
      rgba(255, 255, 255, 0.09) 19px
    ),
    conic-gradient(
      from 195deg at 42% 38%,
      rgba(255, 255, 255, 0.75) 0deg,
      var(--ir-cyan) 48deg,
      var(--ir-blue) 98deg,
      var(--ir-purple) 158deg,
      var(--ir-pink) 218deg,
      var(--ir-yellow) 278deg,
      var(--ir-green) 318deg,
      rgba(255, 255, 255, 0.7) 360deg
    );
  mix-blend-mode: color-dodge;
  animation: bgFloatA 26s ease-in-out infinite alternate;
}

.bg-layer--b {
  width: 85vmin;
  height: 55vmin;
  right: -22%;
  top: 6%;
  opacity: 0.52;
  background: linear-gradient(
    118deg,
    transparent 12%,
    rgba(255, 255, 255, 0.55) 28%,
    var(--ir-cyan) 34%,
    var(--ir-purple) 42%,
    var(--ir-pink) 50%,
    transparent 62%
  );
  filter: blur(2px);
  mix-blend-mode: screen;
  animation: bgFloatB 20s ease-in-out infinite alternate-reverse;
}

.bg-layer--c {
  width: 72vmin;
  height: 72vmin;
  left: -18%;
  bottom: -12%;
  opacity: 0.46;
  background: radial-gradient(ellipse at 40% 40%, var(--ir-green), transparent 62%),
    radial-gradient(ellipse at 70% 60%, var(--ir-blue), transparent 58%);
  mix-blend-mode: soft-light;
  animation: bgFloatC 28s ease-in-out infinite alternate;
}

.bg-film {
  inset: -50%;
  position: absolute;
  opacity: 0.78;
  mix-blend-mode: overlay;
  background: linear-gradient(
    132deg,
    transparent 32%,
    rgba(255, 255, 255, 0.65) 44%,
    var(--ir-cyan) 48%,
    var(--ir-purple) 51%,
    var(--ir-pink) 54%,
    rgba(255, 255, 255, 0.4) 58%,
    transparent 68%
  );
  animation: filmMove 14s ease-in-out infinite alternate;
}

.bg-beam {
  position: absolute;
  inset: -10%;
  background:
    linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.14) 49.5%, transparent 51%),
    linear-gradient(75deg, transparent 58%, rgba(120, 220, 245, 0.08) 59.2%, transparent 60%),
    repeating-linear-gradient(
      118deg,
      transparent 0,
      transparent 96px,
      rgba(255, 255, 255, 0.025) 96px,
      rgba(255, 255, 255, 0.05) 97px
    );
  mask-image: radial-gradient(ellipse 80% 70% at 50% 45%, #000, transparent 72%);
  opacity: 0.82;
  animation: beamDrift 18s ease-in-out infinite alternate;
}

.bg-noise {
  position: absolute;
  inset: 0;
  opacity: 0.055;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

body[data-section-theme="hero"] .bg-layer--a,
body[data-panel-theme="hero"] .bg-layer--a {
  transform: translate3d(-4%, -3%, 0) rotate(-5deg) scale(1.02);
  opacity: 0.8;
}
body[data-section-theme="service"] .bg-layer--b,
body[data-panel-theme="service"] .bg-layer--b {
  transform: translate3d(6%, 3%, 0) scale(1.08);
  opacity: 0.62;
}
body[data-section-theme="svc01"] .bg-layer--c,
body[data-panel-theme="svc01"] .bg-layer--c {
  transform: translate3d(-8%, 4%, 0) scale(1.06);
  opacity: 0.56;
}
body[data-section-theme="svc02"] .bg-layer--a,
body[data-panel-theme="svc02"] .bg-layer--a {
  transform: translate3d(5%, -5%, 0) rotate(4deg) scale(1.04);
  opacity: 0.78;
}
body[data-section-theme="svc03"] .bg-layer--b,
body[data-panel-theme="svc03"] .bg-layer--b {
  transform: translate3d(-4%, -4%, 0) scale(1.05);
  opacity: 0.58;
}
body[data-section-theme="contact"] .bg-layer--c,
body[data-panel-theme="contact"] .bg-layer--c {
  transform: translate3d(6%, 2%, 0) scale(1.04);
  opacity: 0.54;
}

body.is-chapter-changing .bg-film {
  opacity: 0.92;
  transition: opacity 0.6s var(--ease);
}

body.is-scroll-emphasized .bg-film {
  opacity: 0.95;
  filter: saturate(1.15);
}

body.is-scroll-emphasized .bg-beam {
  opacity: 0.95;
}

body.section-svc01-active .bg-film,
body.section-svc02-active .bg-film,
body.section-svc03-active .bg-film {
  opacity: 0.72;
}

body.section-hero-active,
body.panel-hero-active { --theme-accent: var(--ir-cyan); }
body.section-service-active,
body.panel-service-active { --theme-accent: var(--ir-purple); }
body.section-svc01-active,
body.panel-svc01-active { --theme-accent: var(--ir-blue); }
body.section-svc02-active,
body.panel-svc02-active { --theme-accent: var(--ir-pink); }
body.section-svc03-active,
body.panel-svc03-active { --theme-accent: var(--ir-green); }
body.section-contact-active,
body.panel-contact-active { --theme-accent: var(--ir-yellow); }

@keyframes irShift {
  from { transform: translate3d(-2%, -1%, 0) scale(1); }
  to { transform: translate3d(2%, 1%, 0) scale(1.03); }
}

@keyframes bgFloatA {
  from { transform: translate3d(-2%, -1%, 0) rotate(-2deg); }
  to { transform: translate3d(2%, 1%, 0) rotate(2deg); }
}

@keyframes bgFloatB {
  from { transform: translate3d(2%, 2%, 0); }
  to { transform: translate3d(-2%, -2%, 0); }
}

@keyframes bgFloatC {
  from { transform: translate3d(-2%, 2%, 0); }
  to { transform: translate3d(2%, -2%, 0); }
}

@keyframes filmMove {
  from { transform: translate3d(-10%, -6%, 0) rotate(-8deg) scale(1.02); }
  to { transform: translate3d(10%, 6%, 0) rotate(8deg) scale(1.04); }
}

@keyframes beamDrift {
  from { transform: translate3d(-2%, 0, 0); opacity: 0.5; }
  to { transform: translate3d(3%, -2%, 0); opacity: 0.72; }
}

/* --- Loading ------------------------------------------------------------- */

body.is-intro-active { overflow: hidden; }

body.is-intro-active .site-scroll,
body.is-intro-active .site-header,
body.is-intro-active .section-indicator,
body.is-intro-active .section-progress {
  visibility: hidden;
}

.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-items: center;
  clip-path: inset(0 0 0 0);
  transition: clip-path 1.12s var(--ease);
}

.loading-screen__base {
  position: absolute;
  inset: 0;
  background: linear-gradient(165deg, #f6f8fa, #e9edf2 48%, #f4f6f8);
}

.loading-screen__glow {
  position: absolute;
  inset: -30%;
  opacity: 0.75;
  filter: blur(40px);
  animation: loadPulse 5s ease-in-out infinite alternate;
}

.loading-screen__mark {
  position: relative;
  z-index: 2;
  display: grid;
  justify-items: center;
  gap: 20px;
  animation: loadMark 1s var(--ease) 0.15s both;
}

.loading-screen__logo {
  width: 96px;
  height: 96px;
}

.loading-screen__word {
  font-size: 1.02rem;
  color: var(--ink);
}

.loading-screen.is-exiting {
  clip-path: inset(0 0 100% 0);
}

.loading-screen.is-hidden {
  visibility: hidden;
  pointer-events: none;
}

@keyframes loadPulse {
  from { opacity: 0.55; transform: scale(1) rotate(-2deg); }
  to { opacity: 0.9; transform: scale(1.04) rotate(2deg); }
}

@keyframes loadMark {
  from { opacity: 0; transform: translate3d(0, 28px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}

/* --- Header -------------------------------------------------------------- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(248, 250, 252, 0.55);
  backdrop-filter: blur(22px) saturate(1.25);
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.65) inset,
    0 1px 0 rgba(10, 12, 16, 0.05);
  transform: translate3d(0, -100%, 0);
  opacity: 0;
  transition: background 0.4s ease, border-color 0.4s ease, transform 0.9s var(--ease), opacity 0.8s ease;
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ir-cyan), var(--ir-purple), transparent);
  opacity: 0.35;
  pointer-events: none;
}

body.is-loaded .site-header {
  transform: translate3d(0, 0, 0);
  opacity: 1;
}

.header-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}

.brand-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.site-nav {
  display: flex;
  gap: 32px;
}

.site-nav a {
  font-family: var(--font-ja);
  color: var(--text-body);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  position: relative;
  transition: color 0.3s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--ir-cyan), var(--ir-purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  border: 1px solid rgba(10, 12, 16, 0.1);
  background: var(--glass);
  padding: 8px 14px;
  font-family: var(--font-ja);
  cursor: pointer;
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 200;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  padding: 10px 16px;
  background: #fff;
  border: 1px solid rgba(10, 12, 16, 0.12);
}

/* --- Panels -------------------------------------------------------------- */

.presentation,
.site-scroll {
  position: relative;
  z-index: 1;
}

.panel {
  position: relative;
  overflow: clip;
}

.section {
  position: relative;
  overflow-x: clip;
  overflow-y: visible;
}

.section-glow,
.panel__glow {
  display: none !important;
  visibility: hidden !important;
  pointer-events: none;
  opacity: 0 !important;
}

.panel--hero .panel__glow,
.section--hero .section-glow {
  display: none !important;
  background: none !important;
}

.panel--service-intro .panel__glow,
.section--service-intro .section-glow {
  background: radial-gradient(ellipse 70% 55% at 50% 30%, var(--ir-purple), transparent 58%);
}

.panel--service .panel__glow {
  background: radial-gradient(ellipse 55% 50% at 80% 45%, var(--ir-blue), transparent 55%);
}

.panel--contact .panel__glow {
  background: radial-gradient(ellipse 50% 48% at 75% 70%, var(--ir-yellow), transparent 52%);
}

.panel__deco,
.section-deco {
  position: absolute;
  pointer-events: none;
}

.panel__deco--hero::before {
  content: "";
  position: absolute;
  left: -10vw;
  top: 18vh;
  width: 55vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ir-cyan), var(--ir-pink), transparent);
  transform: rotate(-12deg);
  opacity: 0.55;
}

.panel__deco--hero::after {
  content: "";
  position: absolute;
  right: 5vw;
  bottom: 22vh;
  width: 38vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ir-purple), transparent);
  transform: rotate(-8deg);
  opacity: 0.4;
}

.panel__deco--beam::before {
  content: "";
  position: absolute;
  right: 8%;
  top: 12%;
  width: 1px;
  height: 55vh;
  background: linear-gradient(180deg, transparent, var(--ir-cyan), var(--ir-purple), transparent);
  opacity: 0.35;
}

/* Giant numbers — service detail panels only */
.panel--hero .giant-number,
.panel--service-intro .giant-number,
.panel--contact .giant-number {
  display: none !important;
}

.panel--service .giant-number,
.section--service .giant-number {
  font-family: var(--font-ui);
  font-weight: 500;
  letter-spacing: -0.05em;
  background: linear-gradient(
    135deg,
    rgba(10, 12, 16, 0.04) 0%,
    rgba(118, 218, 242, 0.14) 28%,
    rgba(192, 162, 255, 0.12) 52%,
    rgba(255, 172, 218, 0.1) 72%,
    rgba(10, 12, 16, 0.02) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  user-select: none;
  pointer-events: none;
}

/* Readable text — minimal veil, no box frames */
.text-scrim,
.read-soft {
  position: relative;
  isolation: isolate;
}

.text-scrim::before,
.read-soft::before {
  display: none !important;
}

.panel--service .content-field {
  position: relative;
  padding: clamp(12px, 2vw, 24px) 0;
  padding-left: clamp(20px, 3vw, 36px);
}

.panel--service .content-field::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: min(70%, 380px);
  background: linear-gradient(180deg, var(--ir-cyan), var(--ir-purple), transparent);
  opacity: 0.42;
}

.panel--service .content-field::after {
  display: none;
}

.panel__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--panel-max, 1280px);
  margin: 0 auto;
  padding-left: var(--panel-pad-x, clamp(32px, 6vw, 96px));
  padding-right: var(--panel-pad-x, clamp(32px, 6vw, 96px));
}

.panel__inner--hero {
  display: grid;
  gap: clamp(32px, 5vh, 56px);
  align-items: end;
  min-height: calc(100svh - var(--header-h) - 140px);
  align-content: end;
  padding-bottom: clamp(12px, 3vh, 32px);
}

@media (min-width: 900px) {
  .panel__inner--hero {
    grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr);
    gap: clamp(40px, 6vw, 96px);
    align-items: end;
  }
}

.hero-side {
  position: relative;
  z-index: 3;
}

.hero-side .brand-mark--hero {
  margin-bottom: 0;
}

.hero-side .owner-name {
  margin: 12px 0 0;
  font-size: 0.95rem;
}

.hero-main {
  position: relative;
  z-index: 2;
  padding-left: clamp(0px, 2vw, 24px);
}

@media (min-width: 900px) {
  .hero-main {
    padding-left: clamp(24px, 4vw, 48px);
  }

  .hero-main::after {
    content: "";
    position: absolute;
    left: 0;
    top: 8%;
    width: 1px;
    height: 72%;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.55), var(--ir-cyan), transparent);
    opacity: 0.5;
  }
}

.hero-main .catchcopy {
  margin: 0 0 24px;
  font-size: clamp(1.85rem, 4.2vw, 3rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: 0.01em;
  color: var(--text-strong);
}

.hero-lead {
  display: grid;
  gap: 0.9em;
  margin-bottom: 32px;
}

.hero-lead p {
  margin: 0;
  max-width: 34rem;
  color: var(--text-body);
}

.panel__body p,
.panel--contact .contact-item dt {
  color: var(--text-body);
}

.panel--contact .contact-item dd,
.panel--contact .contact-item a {
  color: var(--text-strong);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.panel__index-label {
  margin: 0 0 18px;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.3em;
}

.panel__title {
  margin: 0 0 22px;
  font-size: clamp(1.55rem, 3.2vw, 2.35rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-strong);
  line-height: 1.32;
}

.panel__body {
  display: grid;
  gap: 0.85em;
}

.panel__body p {
  margin: 0;
  max-width: 36rem;
}

.panel--service-intro .panel__glow {
  opacity: 0.88;
  background:
    radial-gradient(ellipse 75% 55% at 68% 42%, var(--ir-cyan), transparent 58%),
    radial-gradient(ellipse 50% 45% at 22% 68%, var(--ir-purple), transparent 55%);
}

.panel--service-intro .panel__deco--intro::before,
.section--service-intro .section-deco--intro::before {
  content: "";
  position: absolute;
  left: -8vw;
  top: 22vh;
  width: 72vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ir-cyan), var(--ir-pink), transparent);
  transform: rotate(-14deg);
  opacity: 0.5;
}

.panel--service-intro .panel__deco--intro::after,
.section--service-intro .section-deco--intro::after {
  content: "";
  position: absolute;
  right: 6vw;
  top: 14vh;
  width: 1px;
  height: 48vh;
  background: linear-gradient(180deg, transparent, var(--ir-purple), var(--ir-cyan), transparent);
  opacity: 0.38;
}

.panel--service-intro .panel__stage--intro {
  position: absolute;
  right: clamp(0px, 4vw, 48px);
  top: 50%;
  width: min(42vw, 420px);
  height: min(58vh, 480px);
  transform: translate3d(0, -50%, 0);
  pointer-events: none;
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.22) 0%,
    rgba(118, 218, 242, 0.12) 35%,
    rgba(192, 162, 255, 0.1) 55%,
    rgba(255, 255, 255, 0.04) 100%
  );
  mask-image: linear-gradient(165deg, #000 25%, transparent 88%);
  opacity: 0.75;
  filter: blur(0.5px);
}

.panel--service-intro .panel__stage--intro::after {
  content: "";
  position: absolute;
  inset: 12% 8%;
  border-left: 1px solid rgba(255, 255, 255, 0.35);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0.6;
}

.panel--service-intro .panel__inner--intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 38%);
  align-items: center;
  gap: clamp(24px, 5vw, 64px);
  min-height: calc(100svh - var(--header-h) - 128px);
}

.panel--service-intro .intro-copy {
  max-width: 520px;
  padding: clamp(16px, 2vh, 28px) 0;
}

.panel--service-intro .panel__index-label {
  letter-spacing: 0.32em;
  color: var(--text-muted);
}

.panel--contact .panel__inner--contact,
.panel--contact .panel__inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(20px, 3vh, 32px);
  min-height: calc(100svh - var(--header-h) - 128px);
  max-width: var(--panel-max, 1280px);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.panel--contact .contact-copy {
  padding: 0;
}

.panel--contact .contact-block {
  padding: clamp(8px, 1.5vh, 16px) 0;
}

.panel--contact .contact-block::before {
  inset: -8px -16px -12px -8px;
  background: radial-gradient(
    ellipse 100% 90% at 12% 50%,
    rgba(252, 253, 255, 0.82) 0%,
    rgba(252, 253, 255, 0.45) 50%,
    transparent 75%
  );
}

.panel--contact .contact-item dt {
  color: var(--text-muted);
  font-weight: 500;
}

.panel--contact .contact-item dd,
.panel--contact .contact-item a {
  color: var(--text-strong);
  font-weight: 600;
  font-size: 1.02rem;
}

.panel--service .panel__layout {
  max-width: 640px;
  padding-left: clamp(22px, 3.5vw, 40px);
}

.panel--service .panel__inner {
  display: flex;
  align-items: center;
  min-height: calc(100svh - var(--header-h) - 128px);
}

/* --- Mask & reveal ------------------------------------------------------- */

.mask-title {
  display: block;
  overflow: hidden;
}

.mask-title > span {
  display: block;
  transform: translate3d(0, 110%, 0);
  opacity: 0;
  transition:
    transform var(--dur-mask) var(--ease),
    opacity 0.8s ease;
  transition-delay: var(--d, 0ms);
}

.section.is-active .mask-title > span,
.panel.is-active .mask-title > span,
body.is-loaded .section--hero.is-active .mask-title > span,
body.is-loaded .panel--hero.is-active .mask-title > span {
  transform: translate3d(0, 0, 0);
  opacity: 1;
}

body.is-loaded .section--hero.is-active .mask-title--hero > span,
body.is-loaded .panel--hero.is-active .mask-title--hero > span {
  transition-delay: 400ms;
}

.reveal-item {
  opacity: 0;
  transform: translate3d(0, 32px, 0);
  transition:
    opacity 0.95s var(--ease),
    transform 1s var(--ease);
}

.section.is-active .reveal-item.is-shown,
.panel.is-active .reveal-item.is-shown,
body.is-loaded .section--hero.is-active .reveal-item.is-shown,
body.is-loaded .panel--hero.is-active .reveal-item.is-shown {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* --- Buttons ------------------------------------------------------------- */

.button {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 30px;
  border-radius: 0;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-decoration: none;
  cursor: pointer;
  isolation: isolate;
  transition:
    color 0.55s var(--ease),
    border-color 0.55s var(--ease),
    background 0.55s var(--ease);
}

.button::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.6s var(--ease);
}

.button::after {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(
    118deg,
    transparent 36%,
    rgba(118, 218, 242, 0.35) 46%,
    rgba(255, 172, 218, 0.22) 52%,
    rgba(192, 162, 255, 0.28) 58%,
    transparent 68%
  );
  transform: translate3d(-120%, 0, 0);
}

.button > * {
  position: relative;
  z-index: 1;
}

.button--primary {
  background: rgba(8, 10, 14, 0.88);
  color: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: none;
  backdrop-filter: blur(12px);
}

.button--primary::before {
  background: linear-gradient(
    108deg,
    transparent 18%,
    rgba(118, 218, 242, 0.22) 42%,
    rgba(255, 172, 218, 0.14) 50%,
    rgba(192, 162, 255, 0.2) 58%,
    transparent 78%
  );
}

.button--secondary {
  background: transparent;
  color: var(--text-strong);
  border: 1px solid rgba(8, 10, 14, 0.28);
  backdrop-filter: none;
}

.button--secondary::before {
  background: linear-gradient(
    125deg,
    rgba(255, 255, 255, 0.28),
    rgba(255, 255, 255, 0.06) 55%,
    transparent
  );
}

@media (hover: hover) {
  .button--primary:hover {
    border-color: rgba(118, 218, 242, 0.35);
    color: #fff;
  }

  .button--primary:hover::before,
  .button--secondary:hover::before {
    opacity: 1;
  }

  .button--secondary:hover {
    border-color: rgba(192, 162, 255, 0.4);
    background: rgba(255, 255, 255, 0.28);
  }

  .button:hover::after {
    animation: btnSheen 0.9s var(--ease) forwards;
  }
}

@keyframes btnSheen {
  to { transform: translate3d(120%, 0, 0); }
}

/* --- Contact & footer ---------------------------------------------------- */

.contact-list {
  margin: 28px 0 0;
  max-width: 36rem;
}

.contact-item {
  padding: 18px 0;
  border-top: 1px solid rgba(8, 10, 14, 0.16);
}

.contact-item:last-child {
  border-bottom: 1px solid rgba(8, 10, 14, 0.16);
}

.contact-item dt {
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.contact-item dd {
  margin: 0;
  font-weight: 600;
  font-size: 1.06rem;
  color: var(--text-strong);
}

.contact-item a {
  color: inherit;
  text-decoration: none;
}

.panel__footer {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid rgba(10, 12, 16, 0.08);
}

.panel__footer p {
  margin: 0 0 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.owner-name,
.owner-role,
.owner-name-text {
  color: var(--text-body);
}

/* --- Panel navigation ---------------------------------------------------- */

/* Corner nav layout: see webkai-layout.css */
.panel-chrome {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 120;
  pointer-events: none;
  padding: 0;
  display: block;
}

.panel-indicator {
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.panel-indicator__dots {
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-indicator__track {
  display: block;
  width: 1px;
  height: 28px;
  background: linear-gradient(180deg, rgba(10, 12, 16, 0.08), rgba(10, 12, 16, 0.28));
  position: relative;
  overflow: hidden;
}

.panel-indicator__thumb {
  position: absolute;
  left: 0;
  width: 100%;
  height: 10px;
  background: linear-gradient(180deg, var(--ir-cyan), var(--ir-purple));
  transition: top 1s var(--ease);
}

.panel-indicator__count {
  color: var(--text-muted);
  white-space: nowrap;
  font-weight: 300;
  letter-spacing: 0.28em;
}

.panel-nav {
  pointer-events: auto;
  width: min(920px, 100%);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: clamp(20px, 5vw, 48px);
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
}

.panel-nav__back {
  justify-self: start;
  align-self: end;
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 6px 0;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-ui);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  transition: color 0.55s var(--ease);
}

.panel-nav__back::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: rgba(10, 12, 16, 0.2);
  transform: scaleX(0.4);
  transform-origin: left;
  transition: transform 0.55s var(--ease), background 0.55s ease;
}

.panel-nav__next {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-height: 48px;
  padding: 0 6px 0 4px;
  border: none;
  border-bottom: 1px solid rgba(10, 12, 16, 0.35);
  background: transparent;
  color: var(--text-strong);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: visible;
  transition:
    color 0.55s var(--ease),
    border-color 0.55s var(--ease);
}

.panel-nav__arrow {
  font-size: 1.15rem;
  font-weight: 300;
  line-height: 1;
  letter-spacing: 0;
  transition: transform 0.55s var(--ease);
}

.panel-nav__glow {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--ir-cyan),
    var(--ir-pink),
    var(--ir-purple),
    transparent
  );
  transform: scaleX(0.15);
  opacity: 0.7;
  transition: transform 0.75s var(--ease), opacity 0.55s ease;
}

.panel-nav__next::before {
  content: "";
  position: absolute;
  inset: -10px -18px -14px -12px;
  z-index: -1;
  background: linear-gradient(
    125deg,
    rgba(255, 255, 255, 0.28),
    rgba(255, 255, 255, 0.08) 50%,
    transparent
  );
  backdrop-filter: blur(14px);
  opacity: 0.85;
  mask-image: linear-gradient(90deg, transparent, #000 18%, #000 82%, transparent);
  pointer-events: none;
}

.panel-nav__next::after {
  content: "";
  position: absolute;
  left: 0;
  right: -8px;
  bottom: -6px;
  height: 2px;
  background: linear-gradient(90deg, var(--ir-cyan), var(--ir-purple));
  opacity: 0;
  animation: nextPulse 2.8s ease-in-out infinite;
}

@keyframes nextPulse {
  0%, 100% { opacity: 0; transform: scaleX(0.2); }
  45%, 55% { opacity: 0.55; transform: scaleX(1); }
}

body.panel-hero-active .panel-nav__next::after {
  opacity: 0.45;
}

.panel-nav__back:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.panel-nav__next:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

@media (hover: hover) {
  .panel-nav__back:not(:disabled):hover {
    color: var(--text-strong);
  }

  .panel-nav__back:not(:disabled):hover::after {
    transform: scaleX(1);
    background: linear-gradient(90deg, var(--ir-purple), transparent);
  }

  .panel-nav__next:not(:disabled):hover {
    border-color: rgba(118, 218, 242, 0.5);
    color: var(--text-strong);
  }

  .panel-nav__next:not(:disabled):hover .panel-nav__arrow {
    transform: translate3d(5px, 0, 0);
  }

  .panel-nav__next:not(:disabled):hover .panel-nav__glow {
    transform: scaleX(1);
    opacity: 1;
  }
}

/* --- Mobile -------------------------------------------------------------- */

@media (max-width: 900px) {
  html.is-panel-desktop,
  html.is-panel-desktop body {
    height: auto;
    overflow: auto;
  }

  html.is-panel-desktop .panel {
    position: relative;
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    pointer-events: auto !important;
    min-height: auto;
    padding-bottom: 48px;
  }

  .panel--service .giant-number {
    font-size: clamp(3.2rem, 20vw, 5rem);
    top: 18%;
    opacity: 0.26;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    flex-direction: column;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(10, 12, 16, 0.08);
    box-shadow: 0 12px 40px rgba(10, 12, 16, 0.08);
  }

  .site-nav.is-open {
    display: flex;
  }

  .panel-chrome {
    position: sticky;
    bottom: 0;
    padding: 12px 16px 18px;
    background: linear-gradient(180deg, transparent, rgba(248, 250, 252, 0.88) 40%);
  }

  .panel--service-intro .panel__inner--intro {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .panel--service-intro .panel__stage--intro {
    position: relative;
    right: auto;
    top: auto;
    width: 100%;
    height: 180px;
    transform: none;
    margin-top: 8px;
  }

  .panel-nav {
    grid-template-columns: 1fr auto;
    gap: 16px;
  }

  .panel-nav__next {
    min-height: 44px;
  }
}

/* --- Reduced motion ------------------------------------------------------ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }

  .panel-nav__next::after {
    animation: none !important;
    opacity: 0.3;
  }

  html.is-panel-desktop .panel,
  html.is-panel-desktop .panel .panel__inner,
  .reveal-item,
  .mask-title > span,
  .site-header,
  .loading-screen {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
    clip-path: none !important;
  }

  body.is-intro-active .presentation,
  body.is-intro-active .site-header,
  body.is-intro-active .panel-chrome {
    visibility: visible;
  }

  .loading-screen.is-hidden {
    display: none;
  }
}