:root {
  color-scheme: dark;
  --bg: #101411;
  --bg-deep: #0b0e0c;
  --paper: #f7f2e8;
  --paper-soft: #ebe0d0;
  --text: #f8f4e9;
  --muted: #b9c2b8;
  --line: rgba(255, 255, 255, 0.14);
  --panel: rgba(20, 28, 25, 0.78);
  --panel-strong: rgba(31, 44, 39, 0.9);
  --teal: #54d6bd;
  --green: #93d47c;
  --amber: #f1c96b;
  --clay: #dc8b61;
  --red: #ef6d5f;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  font-family:
    "PingFang SC",
    "Microsoft YaHei",
    "Noto Sans CJK SC",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(180deg, var(--bg-deep), var(--bg) 36%, #15110e 72%, #0f1211),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
  letter-spacing: 0;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.75), transparent 82%);
  z-index: 0;
}

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

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

button {
  font: inherit;
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 40;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--amber), var(--clay));
  box-shadow: 0 0 18px rgba(84, 214, 189, 0.4);
}

.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  z-index: 30;
  display: flex;
  width: min(1120px, calc(100% - 32px));
  transform: translateX(-50%);
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 13, 11, 0.74);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  place-items: center;
  border: 1px solid rgba(75, 140, 247, 0.2);
  border-radius: 15px;
  background: linear-gradient(180deg, #f7fbff, #d9f1ff);
  color: #4b8cf7;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.72),
    0 10px 26px rgba(0, 0, 0, 0.24);
}

.brand-mark svg {
  width: 29px;
  height: 29px;
}

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

.brand strong {
  font-size: 15px;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  padding: 8px 13px;
  border-radius: 999px;
  color: #dbe5d9;
  font-size: 14px;
  transition:
    background 180ms ease,
    color 180ms ease;
}

.nav-links a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

.hero {
  position: relative;
  display: grid;
  min-height: 86vh;
  padding: 128px max(24px, calc((100vw - 1180px) / 2)) 88px;
  align-items: center;
  isolation: isolate;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -3;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.52;
  filter: saturate(0.78) contrast(1.05);
}

.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(8, 11, 10, 0.86), rgba(8, 11, 10, 0.62) 48%, rgba(8, 11, 10, 0.38)),
    linear-gradient(180deg, rgba(8, 11, 10, 0.3), var(--bg) 96%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(120deg, transparent 0 40%, rgba(84, 214, 189, 0.16) 41%, transparent 42%),
    linear-gradient(145deg, transparent 0 66%, rgba(241, 201, 107, 0.16) 67%, transparent 68%);
  opacity: 0.7;
}

.hero-content {
  width: min(820px, 100%);
}

.hero .reveal,
.intro-band .reveal {
  opacity: 1;
  transform: none;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--amber);
  font-size: 14px;
  font-weight: 800;
}

.hero h1 {
  margin: 0;
  max-width: 900px;
  font-size: 96px;
  line-height: 0.98;
  letter-spacing: 0;
}

.slogan-title span {
  display: block;
}

.position-line {
  max-width: 780px;
  margin: 22px 0 0;
  color: #fafff7;
  font-size: 30px;
  font-weight: 800;
  line-height: 1.36;
}

.lead {
  max-width: 760px;
  margin: 20px 0 0;
  color: #e8eee5;
  font-size: 20px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.hero-tags span,
.status,
.run-note span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #eef6ed;
  font-size: 13px;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 800;
}

.primary-link {
  background: var(--paper);
  color: #121915;
}

.secondary-link {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.hero-signal {
  position: absolute;
  right: max(24px, calc((100vw - 1180px) / 2));
  bottom: 74px;
  width: min(390px, calc(100% - 48px));
  padding: 22px;
  border: 1px solid rgba(84, 214, 189, 0.26);
  border-radius: 8px;
  background: rgba(12, 18, 16, 0.78);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-signal span {
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
}

.hero-signal strong {
  display: block;
  margin: 8px 0;
  font-size: 22px;
  line-height: 1.28;
}

.hero-signal p {
  margin: 0;
  color: var(--muted);
}

.band {
  position: relative;
  z-index: 1;
  padding: 92px max(24px, calc((100vw - 1180px) / 2));
}

.section-head {
  width: min(820px, 100%);
  margin-bottom: 34px;
}

.section-head h2 {
  margin: 0;
  font-size: 46px;
  line-height: 1.18;
  letter-spacing: 0;
}

.section-head p:not(.eyebrow) {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.intro-band {
  padding-top: 48px;
  background:
    linear-gradient(180deg, rgba(20, 27, 24, 0.7), rgba(20, 27, 24, 0)),
    var(--bg);
}

.system-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.045);
}

.system-strip div {
  min-height: 122px;
  padding: 22px;
  border-right: 1px solid var(--line);
}

.system-strip div:last-child {
  border-right: 0;
}

.system-strip span,
.workflow-step span,
.future-map span,
.demo-stack span,
.scene-panel span,
.mock-card .mini-grid span {
  display: block;
  color: var(--amber);
  font-size: 13px;
  font-weight: 800;
}

.system-strip strong {
  display: block;
  margin-top: 10px;
  font-size: 20px;
  line-height: 1.35;
}

.pain-grid,
.capability-grid,
.value-grid,
.future-map {
  display: grid;
  gap: 16px;
}

.pain-grid {
  grid-template-columns: repeat(4, 1fr);
}

.pain-card,
.capability-item,
.value-item,
.future-map article,
.demo-stack article,
.scene-panel > *,
.workflow-step {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 16px 55px rgba(0, 0, 0, 0.18);
}

.pain-card {
  min-height: 270px;
  padding: 22px;
}

.card-index {
  display: block;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
}

.pain-card h3,
.capability-item h3,
.workflow-step h3,
.demo-stack h3,
.mock-card h3,
.value-item strong,
.future-map h3 {
  margin: 18px 0 10px;
  color: #fffaf0;
  font-size: 22px;
  line-height: 1.25;
}

.pain-card p,
.capability-item p,
.workflow-step p,
.demo-stack p,
.mock-card p,
.value-item p,
.future-map p {
  margin: 0;
  color: var(--muted);
}

.capability-band {
  background:
    linear-gradient(180deg, rgba(247, 242, 232, 0.04), rgba(247, 242, 232, 0)),
    #121711;
}

.capability-grid {
  grid-template-columns: repeat(4, 1fr);
}

.capability-item {
  min-height: 238px;
  padding: 20px;
}

.status {
  min-height: 26px;
  padding: 3px 10px;
}

.status.done {
  border-color: rgba(84, 214, 189, 0.34);
  color: var(--teal);
}

.status.demo {
  border-color: rgba(241, 201, 107, 0.38);
  color: var(--amber);
}

.workflow-band {
  overflow: hidden;
}

.workflow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  padding-top: 34px;
}

.workflow-line {
  position: absolute;
  top: 0;
  left: 9%;
  right: 9%;
  height: 2px;
  background: linear-gradient(90deg, var(--teal), var(--amber), var(--clay));
}

.workflow-step {
  min-height: 245px;
  padding: 20px;
}

.workflow-step span {
  color: var(--teal);
}

.shot-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.7fr);
  gap: 18px;
  align-items: stretch;
}

.product-shot {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow);
}

.product-shot img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: top center;
  border-bottom: 1px solid var(--line);
}

.product-shot figcaption {
  padding: 14px 16px 16px;
  color: var(--muted);
  font-size: 14px;
}

.demo-stack {
  display: grid;
  gap: 16px;
}

.demo-stack article {
  padding: 22px;
}

.screenshot-rail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.screenshot-rail figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.045);
}

.screenshot-rail img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  object-position: top center;
  border-bottom: 1px solid var(--line);
}

.screenshot-rail figcaption {
  padding: 12px 14px;
  color: var(--muted);
  font-size: 14px;
}

.scenes-band {
  background: linear-gradient(180deg, rgba(84, 214, 189, 0.045), rgba(220, 139, 97, 0.035));
}

.scene-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.scene-tabs button {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 16px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  cursor: pointer;
  transition:
    background 180ms ease,
    color 180ms ease,
    border-color 180ms ease;
}

.scene-tabs button.active,
.scene-tabs button:hover {
  border-color: rgba(84, 214, 189, 0.45);
  background: rgba(84, 214, 189, 0.14);
  color: var(--text);
}

.scene-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.62fr);
  gap: 16px;
  align-items: stretch;
}

.before-after {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.before-after article {
  min-height: 330px;
  padding: 24px;
}

.before-after article:first-child {
  border-right: 1px solid var(--line);
}

.before-after h3 {
  margin: 12px 0 14px;
  font-size: 24px;
  line-height: 1.3;
}

.before-after ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.before-after li + li {
  margin-top: 10px;
}

.mock-card {
  padding: 22px;
}

.mini-grid {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.mini-grid div {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.mini-grid strong {
  display: block;
  margin-top: 6px;
  line-height: 1.35;
}

.value-band {
  background: var(--paper);
  color: #17201b;
}

.value-band .eyebrow {
  color: #946a18;
}

.value-band .section-head p {
  color: #5a665d;
}

.value-grid {
  grid-template-columns: repeat(4, 1fr);
}

.value-item {
  min-height: 200px;
  border-color: rgba(15, 20, 17, 0.12);
  background: #fffaf1;
  box-shadow: 0 18px 60px rgba(60, 45, 26, 0.12);
  padding: 22px;
}

.value-item strong {
  display: block;
  color: #18251f;
}

.value-item p {
  color: #56645d;
}

.future-map {
  grid-template-columns: repeat(4, 1fr);
}

.future-map article {
  min-height: 250px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.06);
}

.final-band {
  min-height: 66vh;
  display: grid;
  place-items: center;
  background:
    linear-gradient(180deg, rgba(16, 20, 17, 0.2), rgba(16, 20, 17, 0.88)),
    var(--bg-deep);
}

.final-message {
  width: min(850px, 100%);
  text-align: center;
}

.final-message h2 {
  margin: 0;
  font-size: 72px;
  line-height: 1.1;
}

.final-message p:not(.eyebrow) {
  margin: 20px auto 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 19px;
}

.run-note {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
  margin-top: 30px;
}

.run-note code {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding: 5px 12px;
  border: 1px solid rgba(84, 214, 189, 0.34);
  border-radius: 999px;
  background: rgba(84, 214, 189, 0.08);
  color: var(--teal);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 13px;
}

.reveal {
  opacity: 1;
  transform: none;
  transition:
    opacity 680ms ease,
    transform 680ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .nav-links {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 118px;
  }

  .hero h1 {
    font-size: 74px;
  }

  .position-line {
    font-size: 24px;
  }

  .section-head h2 {
    font-size: 40px;
  }

  .final-message h2 {
    font-size: 58px;
  }

  .hero-signal {
    position: relative;
    right: auto;
    bottom: auto;
    margin-top: 40px;
  }

  .system-strip,
  .pain-grid,
  .capability-grid,
  .workflow,
  .value-grid,
  .future-map {
    grid-template-columns: repeat(2, 1fr);
  }

  .workflow-line {
    display: none;
  }

  .shot-layout,
  .screenshot-rail,
  .scene-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    top: 10px;
    width: calc(100% - 20px);
    border-radius: 18px;
  }

  .brand small {
    display: none;
  }

  .hero {
    padding: 110px 18px 58px;
  }

  .hero h1 {
    font-size: 50px;
  }

  .position-line {
    font-size: 20px;
  }

  .section-head h2 {
    font-size: 32px;
  }

  .final-message h2 {
    font-size: 42px;
  }

  .lead {
    font-size: 17px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-link,
  .secondary-link {
    width: 100%;
  }

  .hero-signal {
    display: none;
  }

  .band {
    padding: 64px 18px;
  }

  .system-strip,
  .pain-grid,
  .capability-grid,
  .workflow,
  .value-grid,
  .future-map,
  .before-after {
    grid-template-columns: 1fr;
  }

  .system-strip div,
  .before-after article:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .pain-card,
  .capability-item,
  .workflow-step,
  .value-item,
  .future-map article,
  .before-after article {
    min-height: auto;
  }

  .scene-tabs {
    display: grid;
    grid-template-columns: 1fr;
  }

  .scene-tabs button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}