:root {
  --bg: #0b0f0e;
  --bg-soft: #101513;
  --surface: #151b19;
  --surface-2: #1a211f;
  --paper: #f1f3ed;
  --ink: #f2f5f0;
  --ink-dark: #121714;
  --muted: #97a29d;
  --muted-dark: #5e6963;
  --green: #66dc87;
  --green-strong: #2dcf69;
  --green-soft: rgba(102, 220, 135, 0.12);
  --pink: #ff8291;
  --amber: #e9c97a;
  --hairline: rgba(255, 255, 255, 0.1);
  --hairline-strong: rgba(255, 255, 255, 0.16);
  --shell: rgba(255, 255, 255, 0.055);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 12px;
  --page: min(1320px, calc(100vw - 64px));
  --font: "Noto Sans SC", "Source Han Sans SC", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease-heavy: cubic-bezier(0.32, 0.72, 0, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 6%, rgba(75, 180, 113, 0.08), transparent 24rem),
    var(--bg);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

body::after {
  position: fixed;
  inset: 0;
  z-index: 8;
  pointer-events: none;
  opacity: 0.025;
  content: "";
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E");
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

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

figure,
p,
h1,
h2,
h3,
ul {
  margin: 0;
}

p,
h1,
h2,
h3 {
  text-wrap: pretty;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 30;
  padding: 10px 14px;
  color: var(--ink-dark);
  background: var(--green);
  border-radius: 999px;
  transform: translateY(-150%);
  transition: transform 420ms var(--ease-heavy);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 20px;
  left: 50%;
  z-index: 12;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  width: min(1180px, calc(100vw - 40px));
  min-height: 64px;
  padding: 7px 8px 7px 16px;
  background: rgba(14, 19, 17, 0.76);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.11), 0 18px 80px rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(22px);
  transform: translateX(-50%);
  transition: background 500ms var(--ease-heavy), box-shadow 500ms var(--ease-heavy);
}

.site-header.is-scrolled {
  background: rgba(11, 15, 14, 0.91);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), 0 18px 80px rgba(0, 0, 0, 0.34);
}

.wordmark {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
}

.wordmark img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.wordmark span {
  display: grid;
  gap: 1px;
}

.wordmark strong {
  font-size: 14px;
  line-height: 1.2;
  letter-spacing: 0.03em;
}

.wordmark small {
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.15em;
}

.site-header nav {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.site-header nav a {
  padding: 10px 15px;
  color: #aeb7b2;
  font-size: 13px;
  border-radius: 999px;
  transition: color 520ms var(--ease-heavy), background 520ms var(--ease-heavy), transform 520ms var(--ease-heavy);
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.07);
  outline: none;
  transform: translateY(-1px);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  padding: 7px 8px 7px 20px;
  font-weight: 650;
  font-size: 13px;
  border-radius: 999px;
  transition: transform 600ms var(--ease-heavy), background 600ms var(--ease-heavy), color 600ms var(--ease-heavy);
}

.header-cta {
  color: var(--ink-dark);
  background: var(--green);
}

.header-cta i,
.button i {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  font-style: normal;
  border-radius: 50%;
  transition: transform 600ms var(--ease-heavy);
}

.header-cta i {
  background: rgba(13, 21, 16, 0.1);
}

.header-cta:hover,
.header-cta:focus-visible,
.button:hover,
.button:focus-visible {
  outline: none;
  transform: translateY(-2px);
}

.header-cta:hover i,
.button:hover i {
  transform: translate(2px, -2px) scale(1.06);
}

.header-cta:active,
.button:active {
  transform: scale(0.98);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  border-radius: 50%;
}

.nav-toggle span {
  position: absolute;
  left: 12px;
  width: 20px;
  height: 1px;
  background: currentColor;
  transition: transform 520ms var(--ease-heavy);
}

.nav-toggle span:first-child { transform: translateY(-4px); }
.nav-toggle span:last-child { transform: translateY(4px); }
.nav-toggle[aria-expanded="true"] span:first-child { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: rotate(-45deg); }

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(370px, 0.8fr) minmax(640px, 1.45fr);
  grid-template-rows: 1fr auto;
  align-items: center;
  gap: 56px 74px;
  width: var(--page);
  min-height: 100dvh;
  margin: 0 auto;
  padding: 152px 0 48px;
}

.hero::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 40%;
  width: 1px;
  content: "";
  background: linear-gradient(transparent, rgba(255, 255, 255, 0.08) 18%, rgba(255, 255, 255, 0.08) 82%, transparent);
}

.hero-glow {
  position: absolute;
  top: 9%;
  right: 0;
  width: 70%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(69, 203, 111, 0.12), transparent 64%);
  pointer-events: none;
}

.hero-copy {
  position: relative;
  z-index: 2;
  align-self: center;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #b0bab5;
  font-size: 11px;
  font-weight: 620;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 20px;
  height: 1px;
  background: var(--green);
}

.hero h1 {
  margin-top: 27px;
  font-size: clamp(56px, 5.4vw, 88px);
  font-weight: 760;
  line-height: 0.99;
  letter-spacing: -0.07em;
}

h1 em,
h2 em {
  color: var(--green);
  font-style: normal;
}

.hero-intro {
  max-width: 470px;
  margin-top: 34px;
  color: #a7b1ac;
  font-size: 17px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 36px;
}

.button-primary {
  color: var(--ink-dark);
  background: var(--green);
}

.button-primary i {
  background: rgba(8, 18, 12, 0.11);
}

.button-secondary {
  padding-right: 20px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.07);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.version-note {
  color: #6e7a74;
  font-size: 11px;
  line-height: 1.6;
}

.hero-product {
  position: relative;
  z-index: 1;
  align-self: center;
  padding: 32px 0 52px;
}

.product-shell {
  padding: 8px;
  background: var(--shell);
  border-radius: calc(var(--radius-lg) + 8px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08), 0 50px 130px rgba(0, 0, 0, 0.34);
}

.product-shell-hero {
  transform: perspective(1600px) rotateY(-4deg) rotateX(1deg);
  transform-origin: left center;
}

.product-core {
  overflow: hidden;
  background: #0c1010;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.14);
}

.product-core img {
  width: 100%;
  height: auto;
}

.memory-float {
  position: absolute;
  right: -20px;
  bottom: -5px;
  width: min(300px, 45%);
  padding: 20px;
  background: rgba(242, 245, 240, 0.96);
  color: var(--ink-dark);
  border-radius: var(--radius-md);
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.memory-float-head {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #6a746f;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.memory-pulse {
  width: 7px;
  height: 7px;
  background: var(--green-strong);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(45, 207, 105, 0.13);
}

.memory-float > strong {
  display: block;
  margin-top: 12px;
  font-size: 17px;
}

.memory-float ul {
  display: grid;
  gap: 0;
  margin-top: 14px;
  padding: 0;
  list-style: none;
}

.memory-float li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid rgba(10, 20, 14, 0.08);
  font-size: 10px;
}

.memory-float li span { color: #79837e; }
.memory-float li b { font-weight: 650; text-align: right; }

.hero-proof {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  min-height: 64px;
  color: #8d9892;
  font-size: 11px;
  letter-spacing: 0.06em;
  border-top: 1px solid var(--hairline);
}

.hero-proof i {
  width: 3px;
  height: 3px;
  background: var(--green);
  border-radius: 50%;
}

.section-space {
  position: relative;
  width: var(--page);
  margin: 0 auto;
  padding: 142px 0;
}

.section-index {
  margin-bottom: 72px;
  color: #56615c;
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.18em;
}

.section-copy h2,
.plan-heading h2,
.more-heading h2,
.download-section h2 {
  margin-top: 24px;
  font-size: clamp(48px, 5.6vw, 82px);
  font-weight: 760;
  line-height: 1.04;
  letter-spacing: -0.065em;
}

.section-copy > p:not(.eyebrow):not(.section-note) {
  max-width: 510px;
  margin-top: 32px;
  color: #9ba6a0;
  font-size: 17px;
  line-height: 1.9;
}

.memory-section {
  border-top: 1px solid var(--hairline);
}

.memory-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.76fr) minmax(580px, 1.24fr);
  gap: 11vw;
  align-items: center;
}

.section-note {
  max-width: 360px;
  margin-top: 44px;
  padding-top: 18px;
  color: var(--green);
  font-size: 12px;
  border-top: 1px solid rgba(102, 220, 135, 0.28);
}

.memory-map {
  position: relative;
  display: grid;
  gap: 20px;
  padding-left: 68px;
}

.memory-axis {
  position: absolute;
  top: 26px;
  bottom: 26px;
  left: 21px;
  width: 1px;
  background: linear-gradient(rgba(255, 255, 255, 0.12), var(--green));
}

.memory-map article {
  position: relative;
  padding: 26px 28px;
  background: rgba(255, 255, 255, 0.025);
  border-radius: var(--radius-md);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.055);
  transition: transform 700ms var(--ease-heavy), background 700ms var(--ease-heavy);
}

.memory-map article::before {
  position: absolute;
  top: 30px;
  left: -53px;
  width: 11px;
  height: 11px;
  content: "";
  background: var(--bg);
  border: 2px solid #47514c;
  border-radius: 50%;
}

.memory-map article:hover {
  background: rgba(255, 255, 255, 0.045);
  transform: translateX(7px);
}

.memory-map article.active {
  color: var(--ink-dark);
  background: var(--green);
  box-shadow: 0 25px 70px rgba(54, 209, 105, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.memory-map article.active::before {
  background: var(--green);
  border-color: var(--green);
  box-shadow: 0 0 0 7px rgba(102, 220, 135, 0.13);
}

.memory-map article > span {
  color: #6d7772;
  font-size: 10px;
  letter-spacing: 0.1em;
}

.memory-map article.active > span { color: rgba(11, 23, 15, 0.56); }

.memory-map article strong {
  display: block;
  margin-top: 9px;
  font-size: 19px;
}

.memory-map article p {
  margin-top: 7px;
  color: #7e8983;
  font-size: 12px;
  line-height: 1.7;
}

.memory-map article.active p { color: rgba(11, 23, 15, 0.66); }

.plan-section {
  width: 100%;
  padding-right: max(32px, calc((100vw - 1320px) / 2));
  padding-left: max(32px, calc((100vw - 1320px) / 2));
  background: #0e1311;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.plan-heading {
  display: grid;
  grid-template-columns: 1.7fr 0.56fr;
  gap: 70px;
  align-items: end;
}

.plan-heading h2 {
  max-width: 950px;
}

.plan-heading > p {
  padding-bottom: 8px;
  color: #99a49e;
  font-size: 15px;
  line-height: 1.85;
}

.plan-visual {
  position: relative;
  margin-top: 78px;
  padding-right: 180px;
}

.plan-visual .product-shell {
  width: 100%;
}

.plan-reasons {
  position: absolute;
  right: 0;
  bottom: -42px;
  display: grid;
  width: 340px;
  padding: 8px;
  color: var(--ink-dark);
  background: #ecf0e9;
  border-radius: calc(var(--radius-md) + 8px);
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.34), inset 0 1px 0 #fff;
}

.plan-reasons article {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 13px;
  padding: 18px;
  border-radius: var(--radius-md);
}

.plan-reasons article + article {
  border-top: 1px solid rgba(10, 20, 15, 0.08);
}

.plan-reasons article span {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  color: #2e583c;
  background: #d8eadc;
  font-size: 10px;
  border-radius: 50%;
}

.plan-reasons div {
  display: grid;
  gap: 5px;
}

.plan-reasons strong { font-size: 13px; }
.plan-reasons small { color: #748079; font-size: 10px; }

.plan-benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 94px;
  background: var(--hairline);
}

.plan-benefits article {
  display: grid;
  gap: 12px;
  padding: 28px 32px;
  background: #0e1311;
}

.plan-benefits span {
  color: var(--green);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.plan-benefits strong {
  font-size: 16px;
  font-weight: 560;
}

.teaching-layout {
  display: grid;
  grid-template-columns: minmax(520px, 1.08fr) minmax(390px, 0.92fr);
  gap: 9vw;
  align-items: center;
}

.teaching-demo {
  position: relative;
  min-height: 700px;
  padding: 30px;
  color: var(--ink-dark);
  background: #eef3ee;
  border-radius: calc(var(--radius-lg) + 8px);
  box-shadow: 0 45px 120px rgba(0, 0, 0, 0.32), inset 0 1px 0 #fff;
}

.teaching-demo::before {
  position: absolute;
  inset: 8px;
  pointer-events: none;
  content: "";
  border-radius: var(--radius-lg);
  box-shadow: inset 0 0 0 1px rgba(12, 35, 22, 0.07);
}

.demo-topbar,
.demo-brand,
.interview-demo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.demo-brand {
  justify-content: flex-start;
  gap: 12px;
}

.mini-sprout {
  position: relative;
  width: 34px;
  height: 34px;
  background: #143f2c;
  border-radius: 10px;
}

.mini-sprout::before,
.mini-sprout::after {
  position: absolute;
  top: 9px;
  width: 10px;
  height: 7px;
  content: "";
  background: var(--green);
  border-radius: 90% 10% 90% 10%;
}

.mini-sprout::before { left: 8px; transform: rotate(30deg); }
.mini-sprout::after { right: 7px; transform: scaleX(-1) rotate(30deg); }

.demo-brand div {
  display: grid;
  gap: 3px;
}

.demo-brand strong { font-size: 13px; }
.demo-brand small { color: #77817c; font-size: 9px; }

.listening {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #31724a;
  font-size: 10px;
}

.listening i,
.interview-demo-head i {
  width: 7px;
  height: 7px;
  background: var(--green-strong);
  border-radius: 50%;
  box-shadow: 0 0 0 5px rgba(45, 207, 105, 0.12);
}

.voice-orb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 94px;
  height: 94px;
  margin: 64px auto 16px;
  background: #123d2a;
  border-radius: 50%;
  box-shadow: 0 0 0 12px rgba(35, 186, 95, 0.08), 0 0 0 22px rgba(35, 186, 95, 0.035);
}

.voice-orb i {
  width: 3px;
  height: 18px;
  background: var(--green);
  border-radius: 99px;
  animation: voice-wave 1.2s var(--ease-heavy) infinite alternate;
}

.voice-orb i:nth-child(2) { height: 30px; animation-delay: -400ms; }
.voice-orb i:nth-child(3) { height: 42px; animation-delay: -800ms; }
.voice-orb i:nth-child(4) { height: 25px; animation-delay: -200ms; }
.voice-orb i:nth-child(5) { height: 14px; animation-delay: -600ms; }

@keyframes voice-wave {
  from { transform: scaleY(0.55); opacity: 0.55; }
  to { transform: scaleY(1); opacity: 1; }
}

.voice-status {
  color: #7a857f;
  font-size: 11px;
  text-align: center;
}

.dialogue {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  align-items: start;
  margin-top: 38px;
}

.dialogue + .dialogue { margin-top: 18px; }

.dialogue > span {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  color: #fff;
  background: #26322d;
  font-size: 10px;
  border-radius: 10px;
}

.teacher-dialogue > span { background: #145034; }

.dialogue p {
  max-width: 440px;
  padding: 15px 17px;
  background: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  line-height: 1.75;
  border-radius: 6px 17px 17px 17px;
  box-shadow: inset 0 0 0 1px rgba(12, 35, 22, 0.055);
}

.user-dialogue {
  grid-template-columns: 1fr 32px;
}

.user-dialogue > span { grid-column: 2; }
.user-dialogue p {
  grid-column: 1;
  grid-row: 1;
  justify-self: end;
  color: #fff;
  background: #173e2b;
  border-radius: 17px 6px 17px 17px;
}

.teaching-style {
  position: absolute;
  right: 30px;
  bottom: 30px;
  left: 30px;
  display: grid;
  grid-template-columns: 1fr repeat(3, auto);
  align-items: center;
  gap: 6px;
  padding: 8px;
  background: rgba(215, 224, 217, 0.85);
  border-radius: 999px;
}

.teaching-style small {
  padding-left: 13px;
  color: #6d7872;
  font-size: 9px;
}

.teaching-style button {
  padding: 10px 14px;
  color: #69746e;
  background: transparent;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-size: 10px;
  transition: color 520ms var(--ease-heavy), background 520ms var(--ease-heavy), transform 520ms var(--ease-heavy);
}

.teaching-style button:hover,
.teaching-style button:focus-visible { color: var(--ink-dark); outline: none; transform: translateY(-1px); }
.teaching-style button.is-selected { color: #fff; background: #173e2b; }

.demo-caption {
  position: absolute;
  bottom: -25px;
  left: 8px;
  color: #606b65;
  font-size: 9px;
  letter-spacing: 0.08em;
}

.teaching-copy h2 { font-size: clamp(48px, 5.2vw, 74px); }

.teaching-points {
  display: grid;
  margin-top: 48px;
}

.teaching-points article {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 18px;
  padding: 22px 0;
  border-top: 1px solid var(--hairline);
}

.teaching-points b {
  color: var(--green);
  font-size: 9px;
  font-weight: 650;
}

.teaching-points div {
  display: grid;
  gap: 7px;
}

.teaching-points strong { font-size: 15px; }
.teaching-points span { color: #7e8983; font-size: 12px; line-height: 1.6; }

.more-section {
  border-top: 1px solid var(--hairline);
}

.more-heading {
  display: flex;
  justify-content: space-between;
  gap: 80px;
  align-items: start;
  margin-bottom: 80px;
}

.more-heading h2 {
  max-width: 960px;
  margin-top: 0;
  font-size: clamp(48px, 5.2vw, 76px);
}

.more-heading .eyebrow {
  min-width: max-content;
  padding-top: 16px;
}

.prediction-story,
.interview-story {
  display: grid;
  grid-template-columns: 0.74fr 1.26fr;
  gap: 70px;
  align-items: stretch;
  padding: 8px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: calc(var(--radius-lg) + 8px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.prediction-copy,
.interview-copy {
  padding: 54px 48px;
}

.feature-number {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--green);
  background: var(--green-soft);
  font-size: 10px;
  border-radius: 50%;
}

.prediction-copy h3,
.interview-copy h3 {
  margin-top: 35px;
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.prediction-copy > p,
.interview-copy > p {
  margin-top: 26px;
  color: #97a29c;
  font-size: 14px;
  line-height: 1.85;
}

.prediction-copy ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 34px;
  padding: 0;
  list-style: none;
}

.prediction-copy li,
.interview-values span {
  padding: 9px 12px;
  color: #9aa59f;
  background: rgba(255, 255, 255, 0.045);
  font-size: 10px;
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.07);
}

.prediction-visual {
  display: grid;
  grid-template-columns: 0.8fr 54px 1.2fr;
  align-items: center;
  gap: 20px;
  min-height: 550px;
  padding: 54px;
  color: var(--ink-dark);
  background: #e9ede6;
  border-radius: var(--radius-lg);
}

.analysis-stack {
  display: grid;
  gap: 12px;
}

.analysis-stack div {
  padding: 18px 20px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-sm);
  box-shadow: inset 0 0 0 1px rgba(12, 30, 18, 0.06);
}

.analysis-stack span {
  display: block;
  color: #79837e;
  font-size: 9px;
}

.analysis-stack b {
  display: block;
  margin-top: 7px;
  font-size: 12px;
}

.analysis-flow {
  display: grid;
  gap: 8px;
}

.analysis-flow i {
  height: 1px;
  background: linear-gradient(90deg, #93a79a, #24b65b);
  transform-origin: left;
}

.analysis-flow i:nth-child(1) { transform: rotate(11deg); }
.analysis-flow i:nth-child(3) { transform: rotate(-11deg); }

.paper-card {
  min-height: 375px;
  padding: 34px;
  background: #fffef9;
  border-radius: 3px 22px 22px 3px;
  box-shadow: 16px 24px 50px rgba(27, 47, 34, 0.14), -7px 0 0 #d7ddd5;
  transform: rotate(1.5deg);
  transition: transform 800ms var(--ease-heavy);
}

.paper-card:hover { transform: rotate(0) translateY(-5px); }

.paper-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #538061;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.paper-head b {
  font-size: 38px;
  font-weight: 720;
  opacity: 0.19;
}

.paper-card > strong {
  display: block;
  margin-top: 44px;
  font-size: 22px;
}

.paper-card > p {
  margin-top: 10px;
  color: #7b857f;
  font-size: 10px;
}

.paper-lines {
  display: grid;
  gap: 14px;
  margin-top: 40px;
}

.paper-lines i {
  height: 7px;
  background: #e4e9e2;
  border-radius: 99px;
}

.paper-lines i:nth-child(2) { width: 82%; }
.paper-lines i:nth-child(3) { width: 94%; }
.paper-lines i:nth-child(4) { width: 64%; }

.paper-card > small {
  display: block;
  margin-top: 42px;
  color: #859088;
  font-size: 9px;
}

.interview-story {
  grid-template-columns: 1.25fr 0.75fr;
  margin-top: 34px;
}

.interview-demo {
  position: relative;
  min-height: 600px;
  padding: 42px;
  background: #141a18;
  border-radius: var(--radius-lg);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

.interview-demo-head {
  padding-bottom: 20px;
  color: #7f8a84;
  font-size: 10px;
  border-bottom: 1px solid var(--hairline);
}

.interview-demo-head span {
  display: flex;
  align-items: center;
  gap: 10px;
}

.interview-demo-head b {
  color: var(--ink);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.question {
  max-width: 700px;
  margin-top: 34px;
  font-size: 19px;
  font-weight: 650;
  line-height: 1.6;
}

.transcript {
  margin-top: 35px;
  padding: 30px;
  background: rgba(255, 255, 255, 0.035);
  border-radius: var(--radius-md);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.transcript > span {
  color: #6f7a74;
  font-size: 9px;
  letter-spacing: 0.12em;
}

.transcript p {
  margin-top: 25px;
  color: #b7c0bb;
  font-size: 16px;
  line-height: 2.35;
}

.annotation,
.good-mark {
  position: relative;
  padding: 2px 3px;
}

.annotation {
  color: #ffd2d7;
  background: rgba(255, 130, 145, 0.13);
  box-shadow: 0 1px 0 var(--pink);
}

.annotation i {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 170px;
  padding: 7px 9px;
  color: #f4b0b8;
  background: #3a2227;
  font-size: 9px;
  font-style: normal;
  line-height: 1.35;
  border-radius: 7px;
}

.good-mark {
  color: #c7f5d2;
  background: rgba(102, 220, 135, 0.1);
  box-shadow: 0 1px 0 var(--green);
}

.feedback-row {
  position: absolute;
  right: 42px;
  bottom: 42px;
  left: 42px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  background: var(--hairline);
  border-radius: var(--radius-sm);
}

.feedback-row span {
  padding: 15px;
  color: #9da7a2;
  background: #1a211e;
  font-size: 10px;
  text-align: center;
}

.interview-copy {
  align-self: center;
}

.interview-values {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 34px;
}

.download-section {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 380px;
  align-items: end;
  gap: 40px;
  width: var(--page);
  min-height: 720px;
  margin: 24px auto 0;
  padding: 120px 100px 0;
  overflow: hidden;
  background: #eef2eb;
  color: var(--ink-dark);
  border-radius: 44px 44px 0 0;
  box-shadow: inset 0 1px 0 #fff;
}

.download-glow {
  position: absolute;
  right: 6%;
  bottom: -18%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(61, 215, 112, 0.28), transparent 68%);
  border-radius: 50%;
}

.download-copy {
  align-self: center;
  padding-bottom: 95px;
}

.download-section .eyebrow { color: #67736c; }
.download-section h2 { max-width: 820px; }

.download-section .download-copy > p:not(.eyebrow) {
  margin-top: 30px;
  color: #68736d;
  font-size: 14px;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
}

.download-section .button-primary {
  color: #fff;
  background: #163e2a;
}

.download-section .button-secondary {
  color: var(--ink-dark);
  background: rgba(12, 28, 18, 0.06);
  box-shadow: inset 0 0 0 1px rgba(12, 28, 18, 0.08);
}

.is-disabled {
  cursor: default;
  opacity: 0.78;
}

.is-disabled:hover { transform: none; }

.download-section > img {
  position: relative;
  z-index: 1;
  width: 380px;
  max-height: 650px;
  object-fit: contain;
  object-position: bottom;
}

footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 40px;
  width: var(--page);
  min-height: 116px;
  margin: 0 auto;
  color: #646f69;
  font-size: 10px;
}

footer .wordmark strong { color: var(--ink); }

.reveal {
  opacity: 0;
  transform: translateY(38px);
  transition: opacity 900ms var(--ease-heavy), transform 900ms var(--ease-heavy);
}

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

@media (max-width: 1180px) {
  :root { --page: calc(100vw - 48px); }

  .hero {
    grid-template-columns: 0.78fr 1.22fr;
    gap: 48px;
  }

  .hero h1 { font-size: clamp(52px, 6vw, 76px); }
  .memory-float { right: -4px; }
  .memory-layout { gap: 7vw; }
  .plan-heading { grid-template-columns: 1.45fr 0.55fr; }
  .teaching-layout { gap: 6vw; }
  .prediction-story { grid-template-columns: 0.65fr 1.35fr; gap: 34px; }
  .prediction-copy, .interview-copy { padding: 42px 34px; }
  .prediction-visual { padding: 34px; }
  .download-section { padding-right: 64px; padding-left: 64px; }
}

@media (max-width: 920px) {
  :root { --page: calc(100vw - 32px); }

  .site-header {
    top: 12px;
    grid-template-columns: 1fr auto;
    width: calc(100vw - 24px);
    padding-left: 14px;
  }

  .site-header nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 100px 24px 40px;
    background: rgba(8, 12, 10, 0.96);
    backdrop-filter: blur(26px);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-24px);
    transition: opacity 650ms var(--ease-heavy), transform 650ms var(--ease-heavy);
  }

  .site-header nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-header nav a {
    font-size: 30px;
    font-weight: 650;
  }

  .header-cta { display: none; }
  .nav-toggle { position: relative; z-index: 2; display: block; }

  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: 58px;
    min-height: auto;
    padding-top: 148px;
  }

  .hero::before { display: none; }
  .hero-copy { max-width: 650px; }
  .hero-product { padding-right: 24px; }
  .hero-proof { grid-column: auto; flex-wrap: wrap; padding: 22px; }
  .product-shell-hero { transform: none; }
  .memory-float { right: 0; width: min(320px, 55%); }

  .section-space { padding-top: 106px; padding-bottom: 106px; }
  .section-index { margin-bottom: 52px; }
  .memory-layout, .teaching-layout { grid-template-columns: 1fr; gap: 72px; }
  .memory-map { margin-left: 4vw; }

  .plan-heading { grid-template-columns: 1fr; gap: 28px; }
  .plan-heading > p { max-width: 600px; }
  .plan-visual { padding-right: 0; padding-bottom: 210px; }
  .plan-reasons { right: 24px; bottom: 0; }

  .teaching-copy { order: -1; }
  .teaching-demo { max-width: 690px; }

  .more-heading { display: grid; gap: 25px; }
  .more-heading .eyebrow { order: -1; }
  .prediction-story, .interview-story { grid-template-columns: 1fr; gap: 0; }
  .prediction-copy, .interview-copy { padding: 50px 42px; }
  .prediction-visual { min-height: 510px; }
  .interview-demo { min-height: 560px; }
  .interview-story .interview-copy { order: -1; }

  .download-section {
    grid-template-columns: 1fr 260px;
    min-height: 650px;
    padding: 90px 50px 0;
  }
  .download-section > img { width: 280px; }
}

@media (max-width: 680px) {
  :root { --page: calc(100vw - 28px); }

  body::after { display: none; }
  .site-header { min-height: 58px; }
  .wordmark img { width: 30px; height: 30px; }
  .wordmark strong { font-size: 13px; }

  .hero {
    gap: 40px;
    padding: 124px 0 34px;
  }

  .hero h1 {
    margin-top: 22px;
    font-size: clamp(47px, 14vw, 68px);
    letter-spacing: -0.075em;
  }

  .hero-intro { margin-top: 27px; font-size: 15px; line-height: 1.8; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-product { padding: 0 0 156px; }
  .product-shell { padding: 5px; border-radius: calc(var(--radius-md) + 7px); }
  .product-core { border-radius: var(--radius-md); }
  .product-core img { min-height: 250px; object-fit: cover; object-position: left top; }

  .memory-float {
    right: 10px;
    bottom: 0;
    width: calc(100% - 20px);
    padding: 18px;
  }

  .memory-float > strong { font-size: 15px; }
  .hero-proof { justify-content: flex-start; gap: 12px; font-size: 9px; }

  .section-space { padding-top: 88px; padding-bottom: 88px; }
  .section-index { margin-bottom: 42px; font-size: 8px; }
  .section-copy h2, .plan-heading h2, .more-heading h2, .download-section h2 {
    font-size: clamp(42px, 12vw, 60px);
    letter-spacing: -0.065em;
  }

  .section-copy > p:not(.eyebrow):not(.section-note) { margin-top: 24px; font-size: 15px; }
  .memory-layout { gap: 54px; }
  .memory-map { gap: 12px; margin-left: 0; padding-left: 40px; }
  .memory-axis { left: 12px; }
  .memory-map article { padding: 21px 20px; }
  .memory-map article::before { left: -34px; }

  .plan-section { padding-right: 14px; padding-left: 14px; }
  .plan-visual { margin-top: 48px; padding-bottom: 260px; }
  .plan-visual .product-core img { min-height: 300px; object-position: 12% top; }
  .plan-reasons { right: 8px; left: 8px; width: auto; }
  .plan-benefits { grid-template-columns: 1fr; margin-top: 60px; }
  .plan-benefits article { padding: 22px 18px; }

  .teaching-layout { gap: 54px; }
  .teaching-demo { min-height: 680px; padding: 22px 16px; border-radius: calc(var(--radius-md) + 7px); }
  .teaching-demo::before { border-radius: var(--radius-md); }
  .voice-orb { margin-top: 54px; }
  .dialogue { grid-template-columns: 28px 1fr; }
  .user-dialogue { grid-template-columns: 1fr 28px; }
  .dialogue > span { width: 28px; height: 28px; }
  .dialogue p { font-size: 11px; }
  .teaching-style {
    right: 16px;
    bottom: 20px;
    left: 16px;
    grid-template-columns: repeat(3, 1fr);
    border-radius: var(--radius-md);
  }
  .teaching-style small { grid-column: 1 / -1; padding: 5px 8px; }
  .teaching-style button { padding: 10px 5px; }
  .teaching-copy h2 { font-size: clamp(42px, 12vw, 58px); }

  .more-heading { margin-bottom: 48px; }
  .prediction-story, .interview-story { padding: 5px; border-radius: calc(var(--radius-md) + 7px); }
  .prediction-copy, .interview-copy { padding: 38px 24px; }
  .prediction-copy h3, .interview-copy h3 { font-size: 38px; }
  .prediction-visual {
    grid-template-columns: 1fr;
    gap: 20px;
    min-height: auto;
    padding: 26px 18px 38px;
    border-radius: var(--radius-md);
  }
  .analysis-stack { grid-template-columns: repeat(3, 1fr); gap: 5px; }
  .analysis-stack div { padding: 12px 9px; }
  .analysis-stack b { font-size: 9px; }
  .analysis-flow { display: none; }
  .paper-card { width: calc(100% - 18px); min-height: 340px; margin: 0 auto; padding: 28px; }

  .interview-story { margin-top: 18px; }
  .interview-demo { min-height: 630px; padding: 28px 18px; border-radius: var(--radius-md); }
  .question { font-size: 16px; }
  .transcript { padding: 20px 17px; }
  .transcript p { font-size: 14px; line-height: 2.6; }
  .annotation i { min-width: 145px; font-size: 8px; }
  .feedback-row { right: 18px; bottom: 22px; left: 18px; }
  .feedback-row span { padding: 13px 5px; font-size: 8px; }

  .download-section {
    grid-template-columns: 1fr;
    min-height: 760px;
    padding: 72px 24px 0;
    border-radius: 30px 30px 0 0;
  }
  .download-copy { align-self: start; padding-bottom: 0; }
  .download-section > img { justify-self: center; width: 280px; }
  .download-actions { align-items: flex-start; flex-direction: column; }

  footer {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 34px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header,
  .site-header nav { background: #0b0f0e; backdrop-filter: none; }
}