/* AI Studio — official site */
:root {
  --bg: #0b1014;
  --bg-elev: #121a21;
  --bg-soft: #172229;
  --line: rgba(180, 210, 220, 0.12);
  --text: #e8eef2;
  --muted: #8fa3ae;
  --accent: #2ec4b6;
  --accent-2: #d4a373;
  --accent-dim: rgba(46, 196, 182, 0.16);
  --radius: 4px;
  --nav-h: 72px;
  --font-display: "Syne", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Sora", sans-serif;
  --max: 1160px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: clamp(1.75rem, 3.2vw, 2.6rem);
}

h3 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.section {
  padding: clamp(4rem, 8vw, 6.5rem) 0;
  position: relative;
}

.section-head {
  max-width: 36rem;
  margin-bottom: 2.5rem;
}

.section-head-wide {
  max-width: none;
}

.section-lead-one-line {
  white-space: nowrap;
}

@media (max-width: 900px) {
  .section-lead-one-line {
    white-space: normal;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0 1.35rem;
  border-radius: var(--radius);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, color 0.25s;
}

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

.btn-primary {
  background: var(--accent);
  color: #06201d;
}

.btn-primary:hover {
  background: #3fd4c5;
}

.btn-ghost {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
}

.btn-ghost:hover {
  border-color: rgba(46, 196, 182, 0.45);
  background: var(--accent-dim);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Nav */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(11, 16, 20, 0.86);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a.is-active {
  color: var(--accent);
}

/* Multi-page heroes & entries */
.page-hero {
  padding: calc(var(--nav-h) + 3.5rem) 0 2.5rem;
  background:
    radial-gradient(ellipse 80% 60% at 70% 0%, rgba(46, 196, 182, 0.12), transparent 55%),
    var(--bg);
  border-bottom: 1px solid var(--line);
}

.page-hero-inner {
  max-width: 40rem;
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  margin: 0 0 0.85rem;
}

.page-hero p {
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

body[data-page="contact"] .page-hero-inner,
body[data-page="pricing"] .page-hero-inner {
  max-width: none;
}

.page-hero-inner-wide {
  max-width: min(52rem, 100%);
}

.page-hero-sub {
  margin-top: -0.35rem;
}

body[data-page="contact"] .page-hero-lead,
body[data-page="pricing"] .page-hero-lead {
  max-width: none;
  white-space: nowrap;
}

@media (max-width: 900px) {
  body[data-page="contact"] .page-hero-lead,
  body[data-page="pricing"] .page-hero-lead {
    white-space: normal;
  }
}

.hero-home {
  min-height: 78vh;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}

.entry-card {
  display: grid;
  grid-template-rows: auto 1fr;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.entry-card:hover {
  border-color: rgba(46, 196, 182, 0.45);
  transform: translateY(-3px);
}

.entry-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.entry-card .body {
  padding: 1.1rem 1.15rem 1.25rem;
}

.entry-card h3 {
  margin: 0 0 0.4rem;
}

.entry-card p {
  font-size: 0.9rem;
  margin-bottom: 0.85rem;
}

.entry-link {
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 600;
}

/* Advantages detail page */
.adv-detail-list {
  display: grid;
  gap: 3.5rem;
}

.adv-detail {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  align-items: center;
}

.adv-detail.reverse {
  grid-template-columns: 1.1fr 0.9fr;
}

.adv-detail.reverse .adv-detail-media {
  order: 2;
}

.adv-detail.reverse .adv-detail-copy {
  order: 1;
}

.adv-detail-media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
}

.adv-detail-media img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.adv-num {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.adv-detail-copy h2 {
  margin-bottom: 0.75rem;
}

.page-next {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
}

.page-next-inner {
  text-align: center;
  max-width: 36rem;
  margin-inline: auto;
}

.page-next-inner .btn-row {
  justify-content: center;
}

.scene-grid-page .scene-item {
  min-height: 320px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.5rem;
  align-items: stretch;
}

.contact-page {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 1.5rem;
  align-items: stretch;
}

.inline-mail {
  color: var(--accent);
}

.demo-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 1.75rem 1.75rem 1.5rem;
  height: 100%;
  box-sizing: border-box;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.1rem;
}

.form-field {
  display: grid;
  gap: 0.45rem;
}

.form-field-full {
  grid-column: 1 / -1;
}

.form-field span,
.form-interest legend {
  font-size: 0.88rem;
  color: var(--muted);
}

.form-field em,
.form-interest legend em {
  color: var(--accent-2);
  font-style: normal;
}

.form-field input,
.form-field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(8, 12, 16, 0.55);
  color: var(--text);
  padding: 0.75rem 0.85rem;
  font: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: rgba(143, 163, 174, 0.7);
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: rgba(46, 196, 182, 0.55);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-field textarea {
  resize: vertical;
  min-height: 110px;
}

.form-interest {
  margin: 1.35rem 0 1.1rem;
  padding: 0;
  border: 0;
}

.form-interest legend {
  margin-bottom: 0.75rem;
  padding: 0;
}

.interest-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem 1rem;
}

.interest-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(8, 12, 16, 0.35);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.interest-item:hover {
  border-color: rgba(46, 196, 182, 0.35);
}

.interest-item:has(input:checked) {
  border-color: rgba(46, 196, 182, 0.55);
  background: var(--accent-dim);
}

.interest-item input {
  accent-color: var(--accent);
  width: 1rem;
  height: 1rem;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 0.5rem;
}

.form-actions .btn {
  min-width: 8rem;
}

.form-tip {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.form-tip.is-error {
  color: #e8a090;
}

.form-tip.is-ok {
  color: var(--accent);
}

.contact-side {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  height: 100%;
  min-height: 100%;
}

.contact-card,
.contact-qr {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 1.75rem;
  box-sizing: border-box;
}

.contact-card {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}

.contact-card .contact-list {
  flex: 1;
}

.contact-card .btn-row {
  margin-top: auto;
  padding-top: 1.25rem;
}

.contact-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.contact-list li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 0.75rem;
  color: var(--text);
}

.contact-list span {
  color: var(--muted);
}

.contact-qr {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1 1 auto;
  min-height: 0;
}

.contact-qr h2 {
  margin-bottom: 0;
  width: 100%;
}

.contact-qr-frame {
  margin: 1.25rem auto 0;
  width: 220px;
  height: 220px;
}

.contact-qr .consult-hint {
  margin-top: 0.85rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.5rem;
  align-items: stretch;
}

@media (max-width: 980px) {
  .entry-grid {
    grid-template-columns: 1fr 1fr;
  }

  .adv-detail,
  .adv-detail.reverse {
    grid-template-columns: 1fr;
  }

  .adv-detail.reverse .adv-detail-media,
  .adv-detail.reverse .adv-detail-copy {
    order: unset;
  }

  .contact-layout,
  .contact-page {
    grid-template-columns: 1fr;
  }

  .form-grid,
  .interest-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .entry-grid {
    grid-template-columns: 1fr;
  }
}

/* Pricing */
.price-card {
  border: 1px solid rgba(46, 196, 182, 0.35);
  border-radius: 10px;
  overflow: hidden;
  background:
    linear-gradient(160deg, rgba(46, 196, 182, 0.1), transparent 42%),
    var(--bg-elev);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

.price-card-top {
  padding: 2rem 2rem 1.5rem;
  text-align: center;
}

.price-badge {
  display: inline-block;
  margin-bottom: 0.85rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: #06201d;
  background: var(--accent);
  font-weight: 700;
}

.price-badge-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.85rem;
}

.price-badge-row .price-badge {
  margin-bottom: 0;
}

.price-badge-trial {
  color: var(--accent);
  background: transparent;
  border: 1px solid rgba(46, 196, 182, 0.55);
  box-shadow: inset 0 0 0 1px rgba(46, 196, 182, 0.12);
}

.price-card-top h2 {
  margin-bottom: 0.35rem;
}

.price-desc {
  margin-bottom: 1.35rem;
}

.price-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: center;
  gap: 0.85rem 1.25rem;
  margin-bottom: 0.55rem;
}

.price-now {
  display: flex;
  align-items: baseline;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1;
}

.price-currency {
  font-size: 1.4rem;
  margin-right: 0.15rem;
}

.price-num {
  font-size: clamp(2.8rem, 6vw, 4rem);
  letter-spacing: -0.03em;
  background: linear-gradient(120deg, #f2f7f8 10%, var(--accent) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.price-old {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 1rem;
}

.price-old s {
  font-size: 1.25rem;
  color: rgba(143, 163, 174, 0.9);
}

.price-save {
  color: var(--accent-2);
  font-size: 0.95rem;
  margin-bottom: 1.35rem;
}

.price-card-top .btn-row {
  justify-content: center;
}

.price-highlights {
  list-style: none;
  margin: 0;
  padding: 1.1rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  border-top: 1px solid var(--line);
  background: rgba(8, 12, 16, 0.35);
}

.price-highlights li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.price-highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
}

.price-feat-grid {
  display: grid;
  gap: 1.15rem;
}

.price-feat {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  overflow: hidden;
}

.price-feat header {
  padding: 1.15rem 1.35rem;
  border-bottom: 1px solid var(--line);
  background: rgba(46, 196, 182, 0.06);
}

.price-feat header h3 {
  margin: 0 0 0.25rem;
}

.price-feat header span {
  color: var(--muted);
  font-size: 0.88rem;
}

.price-feat-groups {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 1.25rem 1.35rem 1.4rem;
}

.price-feat-groups-single {
  grid-template-columns: 1fr;
}

.price-feat-groups h4 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  color: var(--accent);
}

.price-feat-groups ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.price-feat-groups li {
  position: relative;
  padding-left: 0.95rem;
  color: var(--text);
  font-size: 0.9rem;
}

.price-feat-groups li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.78rem;
  top: 0.15rem;
}

.price-feat-inline {
  grid-template-columns: repeat(3, 1fr) !important;
  display: grid !important;
  gap: 0.55rem 1rem !important;
}

.price-feat-note p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
}

.price-feat-video header span {
  display: block;
  max-width: 48rem;
}

.price-video-block {
  padding: 1.2rem 1.35rem 0.35rem;
  border-bottom: 1px solid var(--line);
}

.price-video-block-last {
  border-bottom: 0;
  padding-bottom: 1.25rem;
}

.price-video-block > h4 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--accent);
}

.price-mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.price-mode {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(8, 12, 16, 0.4);
  padding: 0.95rem 1rem 1rem;
}

.price-mode strong {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-display);
  margin-bottom: 0.4rem;
}

.price-mode-ico {
  font-style: normal;
  font-size: 1.05rem;
  line-height: 1;
}

.price-mode p {
  margin: 0 0 0.7rem;
  font-size: 0.86rem;
  line-height: 1.55;
}

.price-mode .tags {
  margin-top: 0;
}

.price-scene-cats {
  display: grid;
  gap: 1rem;
  margin-bottom: 1rem;
}

.price-scene-cat h5 {
  margin: 0 0 0.55rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.price-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.price-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(8, 12, 16, 0.5);
  color: var(--text);
  font-size: 0.82rem;
  line-height: 1.2;
}

.price-chip i {
  font-style: normal;
  font-size: 1rem;
  line-height: 1;
}

@media (max-width: 980px) {
  .price-mode-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 980px) {
  .price-highlights,
  .price-feat-groups,
  .price-feat-inline {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 640px) {
  .price-highlights,
  .price-feat-groups,
  .price-feat-inline {
    grid-template-columns: 1fr !important;
  }

  .price-card-top {
    padding: 1.5rem 1.15rem 1.25rem;
  }
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

/* WeChat consult popover */
.consult-wrap {
  position: relative;
}

.consult-trigger[aria-expanded="true"] {
  border-color: rgba(46, 196, 182, 0.55);
  background: var(--accent-dim);
  color: var(--text);
}

.consult-popover {
  position: absolute;
  top: calc(100% + 0.75rem);
  right: 0;
  z-index: 60;
  width: 248px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px) scale(0.96);
  transform-origin: top right;
  transition:
    opacity 0.28s var(--ease),
    transform 0.28s var(--ease),
    visibility 0.28s;
}

.consult-wrap:hover .consult-popover,
.consult-wrap:focus-within .consult-popover,
.consult-wrap.is-open .consult-popover {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.consult-popover-inner {
  position: relative;
  padding: 1rem 1rem 0.95rem;
  border-radius: 12px;
  border: 1px solid rgba(46, 196, 182, 0.35);
  background: linear-gradient(160deg, rgba(18, 32, 38, 0.96), rgba(10, 16, 20, 0.94));
  backdrop-filter: blur(16px);
  box-shadow:
    0 0 0 1px rgba(46, 196, 182, 0.08),
    0 18px 40px rgba(0, 0, 0, 0.45),
    0 0 28px rgba(46, 196, 182, 0.12);
}

.consult-popover-inner::before {
  content: "";
  position: absolute;
  top: -6px;
  right: 1.4rem;
  width: 12px;
  height: 12px;
  border-left: 1px solid rgba(46, 196, 182, 0.35);
  border-top: 1px solid rgba(46, 196, 182, 0.35);
  background: rgba(18, 32, 38, 0.96);
  transform: rotate(45deg);
}

.consult-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
  text-align: center;
  letter-spacing: 0.04em;
}

.consult-qr-frame {
  margin: 0 auto;
  width: 188px;
  height: 188px;
  padding: 8px;
  border-radius: 10px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(232, 244, 242, 0.95));
  box-shadow:
    inset 0 0 0 1px rgba(46, 196, 182, 0.25),
    0 0 20px rgba(46, 196, 182, 0.18);
  overflow: hidden;
}

.consult-qr-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 32%;
  border-radius: 4px;
}

.consult-hint {
  margin: 0.75rem 0 0.35rem;
  text-align: center;
  font-size: 0.84rem;
  color: var(--accent);
  letter-spacing: 0.06em;
}

.consult-phone {
  display: block;
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
  transition: color 0.2s;
}

.consult-phone:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
}

.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0.55rem;
  right: 0.55rem;
  height: 1.5px;
  background: var(--text);
  top: 50%;
}

.nav-toggle span::before {
  top: -6px;
}

.nav-toggle span::after {
  top: 6px;
}

/* Hero */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  align-items: center;
  justify-items: start;
  padding: calc(var(--nav-h) + 1rem) 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(11, 16, 20, 0.92) 0%, rgba(11, 16, 20, 0.55) 48%, rgba(11, 16, 20, 0.35) 100%),
    linear-gradient(180deg, rgba(11, 16, 20, 0.2) 0%, rgba(11, 16, 20, 0.85) 100%),
    url("../img/generated/hero-bg.png") center / cover no-repeat;
  transform: scale(1.02);
  animation: heroZoom 18s ease-in-out alternate infinite;
}

@keyframes heroZoom {
  from {
    transform: scale(1.02);
  }
  to {
    transform: scale(1.08);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 38rem;
  margin-left: 0;
  justify-self: start;
}

.hero-panel {
  width: min(100% - 2.5rem, 38rem);
  margin-left: clamp(1.25rem, 4vw, 3.5rem);
  margin-right: auto;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 0.85rem;
  background: linear-gradient(120deg, #f2f7f8 20%, var(--accent) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero h1 {
  font-size: clamp(1.15rem, 2.2vw, 1.85rem);
  font-weight: 600;
  color: var(--text);
  max-width: none;
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.hero-title-line {
  display: block;
  white-space: nowrap;
}

@media (max-width: 420px) {
  .hero-title-line {
    white-space: normal;
  }
}

.hero .lead {
  font-size: 1.05rem;
  max-width: 34ch;
  margin-bottom: 1.75rem;
}

.hero-reveal > * {
  opacity: 0;
  transform: translateY(18px);
  animation: rise 0.9s var(--ease) forwards;
}

.hero-reveal > *:nth-child(1) {
  animation-delay: 0.05s;
}
.hero-reveal > *:nth-child(2) {
  animation-delay: 0.18s;
}
.hero-reveal > *:nth-child(3) {
  animation-delay: 0.3s;
}
.hero-reveal > *:nth-child(4) {
  animation-delay: 0.42s;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}

/* Advantages */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.adv-item {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.adv-item:hover {
  border-color: rgba(46, 196, 182, 0.35);
  transform: translateY(-3px);
}

.adv-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.adv-item .body {
  padding: 1rem 1rem 1.2rem;
}

.adv-item h3 {
  margin-bottom: 0.35rem;
}

.adv-item p {
  font-size: 0.88rem;
  margin: 0;
}

/* Product */
.product-stage {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

.product-visual {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  min-height: 320px;
}

.product-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0.5rem 0;
  min-width: 0;
}

.product-title {
  white-space: nowrap;
  font-size: clamp(1.35rem, 2.2vw, 2.1rem);
}

@media (max-width: 980px) {
  .product-title {
    white-space: normal;
  }
}

.checklist {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.checklist li {
  display: flex;
  gap: 0.7rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.checklist li::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  margin-top: 0.45rem;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-dim);
}

/* Features */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.feat-card {
  display: grid;
  grid-template-rows: auto 1fr;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  transition: border-color 0.25s;
}

.feat-card:hover {
  border-color: rgba(46, 196, 182, 0.4);
}

.feat-card img,
.feat-card .feat-video-wrap,
.feat-card video {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.feat-card .feat-video-wrap {
  overflow: hidden;
  background: #000;
}

.feat-card .feat-video-wrap video {
  display: block;
  height: 100%;
}

.feat-card .body {
  padding: 1.25rem 1.35rem 1.5rem;
}

.feat-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.85rem;
}

.tag {
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.25rem 0.55rem;
  border-radius: 2px;
}

/* Scenes */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.scene-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  min-height: 240px;
}

.scene-item img,
.scene-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 240px;
  display: block;
}

.scene-item .caption {
  position: absolute;
  inset: auto 0 0;
  padding: 1.5rem 1.1rem 1.1rem;
  background: linear-gradient(transparent, rgba(8, 12, 16, 0.92));
}

.scene-item h3 {
  margin: 0 0 0.25rem;
}

.scene-item p {
  margin: 0;
  font-size: 0.88rem;
}

/* Cases / demo gallery */
.demo-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.demo-filter {
  padding: 0.55rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.demo-filter:hover {
  color: var(--text);
  border-color: rgba(46, 196, 182, 0.35);
}

.demo-filter.is-active {
  color: #06201d;
  background: var(--accent);
  border-color: var(--accent);
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.15rem;
}

.demo-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  cursor: pointer;
  transition: border-color 0.25s, transform 0.25s var(--ease);
}

.demo-card:hover {
  border-color: rgba(46, 196, 182, 0.45);
  transform: translateY(-3px);
}

.demo-card.is-hidden {
  display: none;
}


.demo-media {
  position: relative;
  aspect-ratio: auto;
  min-height: 220px;
  background: #0a0e12;
  overflow: hidden;
}

.demo-ba,
.demo-media-dual,
.demo-media-video {
  display: grid;
  gap: 0;
  align-items: stretch;
}

.demo-ba {
  grid-template-columns: 1fr 1fr;
}

.demo-media-dual {
  grid-template-columns: 1fr 1fr 1.15fr;
}

.demo-media-video {
  grid-template-columns: 0.9fr 1.1fr;
}

.demo-media-video.inputs-2 {
  grid-template-columns: 0.8fr 0.8fr 1.2fr;
}

.demo-media-video.inputs-3 {
  grid-template-columns: 0.7fr 0.7fr 0.7fr 1.15fr;
}

.demo-media-video.only-result {
  grid-template-columns: 1fr;
}

.cmp-pane {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  background: #070b0f;
}

.cmp-pane:last-child {
  border-right: 0;
}

.cmp-frame {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  height: 280px;
  padding: 0.55rem;
  box-sizing: border-box;
}

.cmp-frame img,
.cmp-frame video {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

.cmp-label {
  position: absolute;
  z-index: 2;
  left: 0.45rem;
  bottom: 0.45rem;
  padding: 0.18rem 0.45rem;
  border-radius: 2px;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  pointer-events: none;
}

.cmp-label-after {
  left: auto;
  right: 0.45rem;
  color: #06201d;
  background: var(--accent);
}

.demo-badge {
  position: absolute;
  top: 0.55rem;
  left: 0.55rem;
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: #06201d;
  background: var(--accent);
  z-index: 2;
}

.demo-meta {
  padding: 0.85rem 0.95rem 1rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.demo-meta h3 {
  margin: 0;
  font-size: 0.95rem;
}

.demo-cat {
  font-size: 0.75rem;
  color: var(--muted);
  white-space: nowrap;
}

.demo-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  overflow: hidden;
  background: rgba(4, 8, 12, 0.88);
  backdrop-filter: blur(10px);
}

.demo-lightbox[hidden] {
  display: none !important;
}

.demo-lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 1px solid var(--line);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text);
  background: rgba(18, 26, 33, 0.85);
}

.demo-lightbox-panel {
  width: min(1100px, 100%);
  max-height: calc(100vh - 2.5rem);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-height: 0;
}

.demo-lightbox-stage {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(46, 196, 182, 0.28);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  background: #0b1014;
}

.demo-lightbox-stage > img,
.demo-lightbox-stage > video {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: min(78vh, 820px);
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

.demo-lightbox-stage .lb-compare,
.demo-lightbox-stage .lb-dual {
  display: grid;
  gap: 0.75rem;
  padding: 0.75rem;
  width: 100%;
  height: 100%;
  max-height: min(78vh, 820px);
  box-sizing: border-box;
  background: #0b1014;
  align-items: center;
  justify-items: center;
  overflow: hidden;
}

.demo-lightbox-stage .lb-compare {
  grid-template-columns: 1fr 1fr;
}

.demo-lightbox-stage .lb-dual {
  grid-template-columns: 1fr 1fr 1.15fr;
}

.demo-lightbox-stage .lb-video-multi {
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.demo-lightbox-stage figure {
  margin: 0;
  text-align: center;
  min-width: 0;
  min-height: 0;
  width: 100%;
  height: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.demo-lightbox-stage figure img,
.demo-lightbox-stage figure video {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: calc(min(78vh, 820px) - 2.25rem);
  object-fit: contain;
  display: block;
  flex: 0 1 auto;
}

.demo-lightbox-stage figcaption {
  margin-top: 0.35rem;
  flex-shrink: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.demo-lightbox-caption {
  margin: 0;
  flex-shrink: 0;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.demo-lightbox-prompt {
  flex-shrink: 0;
  max-height: min(22vh, 200px);
  overflow: auto;
  border: 1px solid rgba(46, 196, 182, 0.22);
  border-radius: 10px;
  background: rgba(11, 16, 20, 0.92);
  padding: 0.75rem 1rem 0.85rem;
}

.demo-lightbox-prompt[hidden] {
  display: none !important;
}

.lb-prompt-block h4 {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-weight: 600;
}

.lb-prompt-block pre,
.lb-prompt-opt pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-body), "Noto Sans SC", sans-serif;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text);
  max-height: 28vh;
  overflow: auto;
}

.lb-prompt-opt {
  margin-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 0.65rem;
}

.lb-prompt-opt summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 0.85rem;
  user-select: none;
}

.lb-prompt-opt summary:hover {
  color: var(--accent);
}

.lb-prompt-opt[open] summary {
  margin-bottom: 0.45rem;
  color: var(--accent);
}

.case-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.case-tab {
  padding: 0.55rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
}

.case-tab.is-active {
  color: #06201d;
  background: var(--accent);
  border-color: var(--accent);
}

.case-panel {
  display: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
}

.case-panel.is-active {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
}

.case-panel img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}

.case-panel .body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* CTA */
.cta {
  padding: 0;
}

.cta-banner {
  position: relative;
  min-height: 280px;
  display: grid;
  place-items: center;
  text-align: center;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(11, 16, 20, 0.55), rgba(11, 16, 20, 0.78)),
    url("../img/generated/cta-banner.png") center / cover no-repeat;
}

.cta-inner {
  position: relative;
  z-index: 1;
  padding: 3rem 1.5rem;
  max-width: 36rem;
}

.cta-inner h2 {
  color: var(--text);
}

.cta-inner p {
  color: rgba(232, 238, 242, 0.78);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 3rem 0 2rem;
  background: #080c10;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-brand img {
  width: 48px;
  height: 48px;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 28ch;
}

.footer-col h4 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.footer-col a,
.footer-col li {
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 980px) {
  .adv-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-stage,
  .case-panel.is-active {
    grid-template-columns: 1fr;
  }

  .feat-grid,
  .scene-grid,
  .demo-grid {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 760px) {
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header.is-open .nav-links {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    padding: 1rem 1.25rem 1.25rem;
    background: rgba(11, 16, 20, 0.96);
    border-bottom: 1px solid var(--line);
    gap: 1rem;
  }

  .site-header.is-open .nav-cta {
    display: flex;
    position: absolute;
    top: calc(var(--nav-h) + 11.5rem);
    left: 1.25rem;
    right: 1.25rem;
    z-index: 55;
  }

  .consult-popover {
    right: auto;
    left: 0;
    width: min(248px, calc(100vw - 2.5rem));
  }

  .consult-popover-inner::before {
    right: auto;
    left: 1.4rem;
  }

  .feat-grid,
  .scene-grid,
  .demo-grid {
    grid-template-columns: 1fr;
  }

  .demo-ba,
  .demo-media-dual,
  .demo-media-video {
    grid-template-columns: 1fr;
  }

  .cmp-frame {
    height: 240px;
  }

  .demo-lightbox-stage .lb-compare,
  .demo-lightbox-stage .lb-dual,
  .demo-lightbox-stage .lb-video-multi {
    grid-template-columns: 1fr;
    max-height: min(70vh, 720px);
  }

  .demo-lightbox-stage figure img,
  .demo-lightbox-stage figure video {
    max-height: calc(min(42vh, 420px) - 1.5rem);
  }

  .hero {
    align-items: center;
    justify-items: start;
  }
}