/* ==========================================================================
   page-index.css — GEO 科普主视觉首页
   Hero (dark / AI engine boot) → light knowledge sections → downloads → CTA
   ========================================================================== */

/* ------------------------------ Shared page bits ------------------------------ */
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 50%;
  transform: translate(-50%, -200%);
  z-index: 200;
  padding: 0.7rem 1.2rem;
  border-radius: var(--r-pill);
  background: var(--mint);
  color: var(--ink);
  font-weight: 700;
  transition: transform 0.25s var(--ease-out);
}

.skip-link:focus {
  transform: translate(-50%, 0);
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background-image: linear-gradient(168deg, #1d100d 0%, #180f0d 42%, #0b1020 100%);
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.hero__halo--rose {
  width: 56vw;
  height: 56vw;
  max-width: 820px;
  max-height: 820px;
  right: -16vw;
  top: -20vw;
  background: radial-gradient(circle at center, rgba(255, 47, 110, 0.85), transparent 66%);
}

.hero__halo--coral {
  width: 42vw;
  height: 42vw;
  max-width: 620px;
  max-height: 620px;
  left: -14vw;
  bottom: -18vw;
  background: radial-gradient(circle at center, rgba(255, 106, 61, 0.8), transparent 66%);
}

.hero__halo--violet {
  width: 38vw;
  height: 38vw;
  left: 38%;
  top: 30%;
  background: radial-gradient(circle at center, rgba(109, 91, 255, 0.75), transparent 68%);
}

.hero__nodes {
  position: absolute;
  inset: 0;
  opacity: 0.6;
}

.hero__band {
  position: absolute;
  display: block;
  border-radius: var(--r-pill);
  pointer-events: none;
}

.hero__band--a {
  width: 130%;
  height: 12px;
  left: -15%;
  top: 21%;
  background: linear-gradient(90deg, transparent, var(--mint), rgba(155, 246, 201, 0.1), transparent);
  opacity: 0.55;
  transform: rotate(-7deg);
  animation: band-slide 14s var(--ease-in-out) infinite;
}

.hero__band--b {
  width: 120%;
  height: 7px;
  left: -10%;
  bottom: 17%;
  background: linear-gradient(90deg, transparent, var(--rose), var(--coral), transparent);
  opacity: 0.4;
  transform: rotate(4deg);
  animation: band-slide 18s var(--ease-in-out) infinite reverse;
}

.hero__ring {
  position: absolute;
  right: 5vw;
  top: 12%;
  width: clamp(200px, 25vw, 360px);
  aspect-ratio: 1;
  border: 1.5px dashed rgba(255, 248, 240, 0.22);
  border-radius: 50%;
  animation: ring-spin 46s linear infinite;
}

.hero__ring::before,
.hero__ring::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.hero__ring::before {
  top: 8%;
  left: 22%;
  background: var(--mint);
  box-shadow: 0 0 14px rgba(155, 246, 201, 0.8);
}

.hero__ring::after {
  bottom: 12%;
  right: 14%;
  background: var(--coral);
  box-shadow: 0 0 14px rgba(255, 106, 61, 0.7);
}

.hero__scan {
  position: absolute;
  left: 0;
  right: 0;
  height: 180px;
  top: -20%;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(255, 248, 240, 0.055) 45%,
    rgba(155, 246, 201, 0.05) 55%,
    transparent
  );
  animation: scan 10s linear infinite;
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: calc(100svh - 73px);
  padding-block: clamp(2.25rem, 5vh, 3.5rem) clamp(4.5rem, 8vh, 6rem);
}

.hero__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: clamp(1.2rem, 3.5vh, 2.4rem);
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--fg-dim);
  text-transform: uppercase;
}

.hero__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(155, 246, 201, 0.14), 0 0 14px rgba(155, 246, 201, 0.9);
  animation: dot-pulse 2.2s var(--ease-in-out) infinite;
}

.hero__chips {
  display: flex;
  gap: 0.7rem;
  list-style: none;
}

.hero__chip {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.68rem 0.95rem;
  border-radius: 16px;
  color: var(--ink);
  box-shadow: 0 14px 34px -18px rgba(0, 0, 0, 0.8);
}

/* beat `.theme-dark-v2 li { color: var(--fg-dim) }` so chips keep dark ink */
.hero .hero__chip,
.hero .hero__chip span,
.hero .hero__chip b {
  color: var(--ink);
  text-shadow: none;
}

.hero__chip span {
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.2;
}

.hero__chip b {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  opacity: 1;
  color: var(--ink);
}

.hero__chip--rose {
  background: var(--rose);
  transform: rotate(-3deg);
}

.hero__chip--coral {
  background: var(--coral);
  transform: rotate(2deg) translateY(8px);
}

.hero__chip--mint {
  background: var(--mint);
  transform: rotate(-1.5deg) translateY(-2px);
}

.hero__word-wrap {
  position: relative;
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: clamp(0.75rem, 2vw, 1.75rem);
}

.hero .hero__word {
  font-family: "Archivo Black", var(--font-display);
  font-size: clamp(6.5rem, 38vw, 19rem);
  font-weight: 400;
  line-height: 0.8;
  letter-spacing: -0.055em;
  color: var(--tx-dark);
  margin-left: -0.055em;
  text-shadow: 0.03em 0.03em 0 rgba(255, 47, 110, 0.95),
    0 18px 44px rgba(0, 0, 0, 0.42);
}

.hero__word-cn {
  position: static;
  margin-bottom: clamp(0.6rem, 2.6vw, 2.6rem);
  padding: 0.5em 0.85em;
  border-radius: 12px;
  background: var(--mint);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(0.85rem, 1.5vw, 1.2rem);
  letter-spacing: 0.12em;
  transform: rotate(-3.5deg);
  box-shadow: 6px 6px 0 rgba(24, 15, 13, 0.85);
  white-space: nowrap;
}

.hero__bottom {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: end;
  margin-top: clamp(1.1rem, 2.6vh, 2rem);
}

.hero__headline {
  display: flex;
  flex-direction: column;
  font-size: clamp(2.4rem, 5.1vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--tx-dark);
}

.hero__headline > span {
  display: block;
}

.hero__headline-accent {
  background: linear-gradient(100deg, #ff7aa4 0%, #ff5c8d 42%, #ff9a4d 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
  filter: drop-shadow(0 4px 0 rgba(24, 15, 13, 0.6));
}

.hero__aside {
  padding-bottom: 0.35rem;
}

.hero__declaration {
  margin: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--coral);
  font-family: var(--font-serif);
  font-size: clamp(1.02rem, 1.55vw, 1.3rem);
  line-height: 1.65;
  color: var(--tx-dark);
  text-shadow: 0 2px 2px rgba(0, 0, 0, 0.5);
}

.hero__sub {
  margin-top: 1rem;
  max-width: 46ch;
  color: var(--fg-dim);
  font-size: 1rem;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: clamp(1.25rem, 3vw, 3.25rem);
  margin: clamp(1.4rem, 3vh, 2.4rem) 0 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line-dark);
  list-style: none;
}

.hero__stat {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
}

.hero__stat strong {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.1vw, 2.7rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--tx-dark);
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.4);
}

.hero__stat span {
  font-size: 0.84rem;
  color: var(--fg-dim);
}

.hero__stat--note {
  margin-left: auto;
  text-align: right;
}

.hero__stat--note span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  line-height: 1.7;
  color: var(--tx-dark-mute);
  text-transform: uppercase;
}

.hero__scroll {
  position: absolute;
  left: 50%;
  bottom: 1.4rem;
  transform: translateX(-50%);
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--tx-dark-mute);
}

.hero__scroll-line {
  width: 1.5px;
  height: 40px;
  background: linear-gradient(180deg, var(--tx-dark-mute), transparent);
  animation: scroll-hint 2.2s var(--ease-in-out) infinite;
  transform-origin: top;
}

/* Hero entrance animations */
[data-anim] {
  opacity: 0;
  animation: hero-in 0.9s var(--ease-out) forwards;
}

[data-anim="fade"] {
  animation-delay: 0.2s;
}

[data-anim="word"] {
  animation: word-in 1.05s var(--ease-out) 0.05s forwards;
}

[data-anim="line"] {
  animation-delay: 0.45s;
}

.hero__chips li[data-anim="chip"]:nth-child(1) {
  animation-delay: 0.35s;
}

.hero__chips li[data-anim="chip"]:nth-child(2) {
  animation-delay: 0.47s;
}

.hero__chips li[data-anim="chip"]:nth-child(3) {
  animation-delay: 0.59s;
}

[data-anim="chip"] {
  animation-name: chip-in;
  animation-duration: 0.75s;
  animation-timing-function: var(--ease-spring);
}

.hero__top [data-anim="fade"] {
  animation-delay: 0.1s;
}

.hero__stats[data-anim="fade"] {
  animation-delay: 0.65s;
}

.hero__aside[data-anim="fade"] {
  animation-delay: 0.55s;
}

@keyframes hero-in {
  from {
    opacity: 0;
    transform: translate3d(0, 26px, 0);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes word-in {
  from {
    opacity: 0;
    transform: translate3d(0, 0.12em, 0) scale(0.97);
    filter: blur(6px);
  }
  to {
    opacity: 1;
    transform: none;
    filter: blur(0);
  }
}

@keyframes chip-in {
  from {
    opacity: 0;
    transform: translate3d(0, -18px, 0) rotate(0);
  }
  to {
    opacity: 1;
  }
}

@keyframes scan {
  0% {
    top: -25%;
  }
  100% {
    top: 115%;
  }
}

@keyframes band-slide {
  0%,
  100% {
    transform: translate3d(0, 0, 0) rotate(-7deg);
  }
  50% {
    transform: translate3d(3%, 0, 0) rotate(-5deg);
  }
}

@keyframes ring-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes dot-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.45;
  }
}

@keyframes scroll-hint {
  0%,
  100% {
    transform: scaleY(0.3);
    opacity: 0.4;
  }
  50% {
    transform: scaleY(1);
    opacity: 1;
  }
}

/* ==========================================================================
   TICKER
   ========================================================================== */
.ticker {
  background: var(--mint);
  color: var(--ink);
  border-block: 2px solid var(--ink);
}

.ticker .marquee__track {
  padding-block: 0.9rem;
}

.ticker .marquee__item {
  font-size: clamp(1rem, 1.7vw, 1.32rem);
}

.ticker .marquee__dot {
  background: var(--ink);
  opacity: 0.9;
}

/* ==========================================================================
   MANIFESTO
   ========================================================================== */
.manifesto {
  position: relative;
  background: var(--cream);
  overflow: hidden;
}

.manifesto::before {
  content: "GEO";
  position: absolute;
  right: -2vw;
  bottom: -7vw;
  font-family: "Archivo Black", var(--font-display);
  font-size: 26vw;
  line-height: 0.7;
  color: transparent;
  -webkit-text-stroke: 2px rgba(24, 15, 13, 0.09);
  pointer-events: none;
}

.manifesto__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 0.36fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.manifesto__label {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}

.manifesto__stamp {
  margin: 0;
  padding: 0.55rem 0.9rem;
  border: 2px dashed var(--rose);
  border-radius: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--rose-deep);
  transform: rotate(-2deg);
}

.manifesto__note {
  margin: 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line-light);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--tx-light-dim);
  max-width: 30ch;
}

.manifesto__big {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.9vw, 4.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--tx-light);
}

.manifesto__big em {
  font-style: normal;
  color: var(--rose);
}

.manifesto__mid {
  margin: clamp(1.5rem, 3vw, 2.5rem) 0 0;
  max-width: 40ch;
  font-size: clamp(1.08rem, 1.7vw, 1.42rem);
  line-height: 1.75;
  color: var(--tx-light-dim);
}

.manifesto__mid b {
  padding: 0 0.18em;
  background: var(--mint);
  color: var(--ink);
  font-weight: 800;
}

/* ==========================================================================
   01 WHAT IS GEO
   ========================================================================== */
.knowledge {
  background: var(--cream);
  color: var(--tx-light);
}

.knowledge .lead,
.vs .lead,
.levers .lead,
.engines .lead {
  color: var(--tx-light-dim);
}

.def-card {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  margin-block: clamp(2rem, 4vw, 3rem) clamp(2rem, 4vw, 3.25rem);
  padding: clamp(1.75rem, 4vw, 3.5rem);
  border-radius: var(--r-xl);
  background: var(--ink);
  color: var(--tx-dark);
  box-shadow: var(--shadow-hard-rose);
}

.def-card__left {
  padding-right: clamp(1.25rem, 3vw, 3rem);
  border-right: 1px solid var(--line-dark);
}

.def-card__label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--mint);
}

.def-card__word {
  margin: 1.1rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--tx-dark);
  text-shadow: 0 3px 0 rgba(0, 0, 0, 0.45);
}

.def-card__right {
  display: grid;
  gap: 0.95rem;
}

.def-card__right p {
  margin: 0;
  color: var(--tx-dark-dim);
  line-height: 1.85;
  font-size: 1rem;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.5);
}

.def-card__right b {
  color: var(--mint);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.9rem, 1.6vw, 1.3rem);
}

.step-card {
  position: relative;
  overflow: hidden;
  min-height: 230px;
  padding: 1.55rem;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1.5px solid var(--line-light);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-float);
}

.step-card:nth-child(1) {
  background: var(--pink-soft);
}

.step-card:nth-child(2) {
  background: var(--mint-soft);
}

.step-card:nth-child(3) {
  background: var(--cream-2);
}

.step-card:nth-child(4) {
  background: var(--white);
}

.step-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
}

.step-card:nth-child(1)::after {
  background: var(--rose);
}

.step-card:nth-child(2)::after {
  background: var(--mint);
}

.step-card:nth-child(3)::after {
  background: var(--coral);
}

.step-card:nth-child(4)::after {
  background: var(--violet);
}

.hex-deco {
  position: absolute;
  width: 54px;
  height: 54px;
  background: center / contain no-repeat
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Cpath d='M16 3 27 9.5v13L16 29 5 22.5v-13Z' fill='none' stroke='%23180F0D' stroke-width='1.6' stroke-linejoin='round' opacity='.38'/%3E%3Ccircle cx='16' cy='16' r='3' fill='%23FF2F6E' opacity='.7'/%3E%3C/svg%3E");
  pointer-events: none;
}

.step-card .hex-deco {
  top: 1rem;
  right: 1rem;
}

.step-card__no {
  display: block;
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.8px rgba(24, 15, 13, 0.68);
}

.step-card__title {
  margin: 2.2rem 0 0;
  font-size: 1.24rem;
}

.step-card p {
  margin: 0.65rem 0 0;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--tx-light-dim);
}

.quote-banner {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
  margin: clamp(2rem, 4vw, 3.25rem) 0 0;
  padding: clamp(1.75rem, 3.4vw, 2.8rem) clamp(1.75rem, 4vw, 3.5rem);
  border-radius: var(--r-xl);
  background: var(--coral);
  color: var(--ink);
  overflow: hidden;
}

.quote-banner__mark {
  position: static;
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 5.5vw, 5.2rem);
  line-height: 0.75;
  color: rgba(24, 15, 13, 0.58);
  transform: translateY(-0.12em);
  pointer-events: none;
}

.quote-banner p {
  position: relative;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.7vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.quote-banner cite {
  position: relative;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  font-style: normal;
  color: rgba(24, 15, 13, 0.78);
  white-space: nowrap;
}

/* ==========================================================================
   02 GEO VS SEO
   ========================================================================== */
.vs {
  background: var(--pink);
  color: var(--tx-light);
}

.vs-table {
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1.5px solid var(--line-light-strong);
  background: var(--white);
  box-shadow: 0 30px 70px -40px rgba(24, 15, 13, 0.5);
}

.vs-table__head,
.vs-row {
  display: grid;
  grid-template-columns: minmax(110px, 0.34fr) minmax(0, 1fr) minmax(0, 1fr);
}

.vs-table__head {
  background: var(--ink);
  color: var(--tx-dark);
  padding: 0;
}

.vs-table__head span {
  padding: 1rem 1.35rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.vs-table__seo {
  color: var(--tx-dark-mute);
}

.vs-table__geo {
  color: var(--mint);
}

.vs-table__body {
  display: block;
}

.vs-row {
  border-top: 1px solid var(--line-light);
  transition: background var(--dur-fast) var(--ease-out);
}

.vs-row:hover {
  background: rgba(155, 246, 201, 0.12);
}

.vs-row__dim {
  display: flex;
  align-items: center;
  padding: 0.95rem 1.35rem;
  background: var(--cream-2);
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--tx-light);
}

.vs-cell {
  display: flex;
  align-items: center;
  padding: 0.95rem 1.35rem;
  font-size: 0.93rem;
  line-height: 1.6;
  color: var(--tx-light-dim);
}

.vs-cell--seo {
  border-left: 1px solid var(--line-light);
}

.vs-cell--geo {
  border-left: 1px solid var(--line-light);
  background: rgba(155, 246, 201, 0.2);
  color: var(--tx-light);
  font-weight: 600;
}

.vs__footnote {
  margin: clamp(1.25rem, 2.5vw, 1.8rem) 0 0;
  padding-left: 1rem;
  border-left: 3px solid var(--rose);
  font-size: 0.95rem;
  color: var(--tx-light-dim);
}

/* ==========================================================================
   03 LEVERS
   ========================================================================== */
.levers {
  background: linear-gradient(180deg, var(--pink) 0%, var(--cream) 16%, var(--cream-2) 100%);
  color: var(--tx-light);
}

.levers__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.9rem, 1.7vw, 1.35rem);
}

.lever {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-height: 250px;
  padding: clamp(1.35rem, 2.2vw, 1.9rem);
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1.5px solid var(--line-light);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.lever:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-float);
}

.lever:nth-child(1) {
  background: var(--pink-soft);
}

.lever:nth-child(2) {
  background: var(--mint-soft);
}

.lever:nth-child(3) {
  background: var(--cream);
}

.lever:nth-child(4) {
  background: var(--white);
}

.lever:nth-child(5) {
  background: var(--pink);
}

.lever__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.lever__no {
  font-family: var(--font-display);
  font-size: 2.5rem;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.8px rgba(24, 15, 13, 0.66);
}

.lever__title {
  font-size: clamp(1.2rem, 1.7vw, 1.5rem);
}

.lever::after {
  content: "";
  position: absolute;
  right: -26px;
  bottom: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 1.5px dashed rgba(24, 15, 13, 0.16);
  pointer-events: none;
}

.lever:nth-child(even)::after {
  border-style: solid;
  opacity: 0.6;
}

.lever p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--tx-light-dim);
}

.lever--dark {
  background: var(--ink) !important;
  border-color: var(--ink);
  color: var(--tx-dark);
}

.lever--dark .lever__no {
  -webkit-text-stroke-color: rgba(255, 248, 240, 0.45);
}

.lever--dark p {
  color: var(--tx-dark-dim);
}

/* ==========================================================================
   04 ENGINES
   ========================================================================== */
.engines {
  position: relative;
  background-color: var(--mint-soft);
  background-image: linear-gradient(rgba(24, 15, 13, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 15, 13, 0.045) 1px, transparent 1px);
  background-size: 84px 84px;
  color: var(--tx-light);
}

.engines__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: clamp(0.75rem, 1.3vw, 1.1rem);
}

.engine {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-height: 300px;
  padding: 1.5rem 1.2rem 1.35rem;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1.5px solid var(--line-light);
  position: relative;
  overflow: hidden;
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.engine:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-float);
}

.engine::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
}

.engine:nth-child(1)::before {
  background: var(--rose);
}

.engine:nth-child(2)::before {
  background: var(--coral);
}

.engine:nth-child(3)::before {
  background: var(--violet);
}

.engine:nth-child(4)::before {
  background: var(--mint-bright);
}

.engine:nth-child(5)::before {
  background: var(--blue-bright);
}

.engine__idx {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--tx-light-mute);
}

.engine h3 {
  font-size: clamp(1.05rem, 1.35vw, 1.28rem);
  line-height: 1.12;
  word-break: break-word;
}

.engine__tag {
  align-self: flex-start;
  padding: 0.28em 0.65em;
  border-radius: var(--r-pill);
  background: var(--mint);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.engine p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.68;
  color: var(--tx-light-dim);
}

.engine-flow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  padding: clamp(1rem, 2vw, 1.5rem);
  border: 1.5px dashed var(--line-light-strong);
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, 0.6);
}

.engine-flow__node {
  flex: 1 1 150px;
  padding: 0.95rem 1rem;
  border-radius: var(--r-md);
  background: var(--white);
  border: 1.5px solid var(--line-light);
}

.engine-flow__node span {
  display: block;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--rose-deep);
}

.engine-flow__node b {
  display: block;
  margin-top: 0.35rem;
  font-size: 1rem;
}

.engine-flow__node--hot {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--tx-dark);
}

.engine-flow__node--hot span {
  color: var(--mint);
}

.engine-flow__arrow {
  font-size: 1.35rem;
  color: var(--tx-light-mute);
}

.engines__note {
  margin: 1rem 0 0;
  font-size: 0.82rem;
  color: var(--tx-light-dim);
}

/* ==========================================================================
   PLAN TEASER (dark)
   ========================================================================== */
.plan-teaser {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding-block: clamp(4.5rem, 9vw, 8.5rem);
}

.plan-teaser__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.plan-teaser__halo--rose {
  width: 44vw;
  height: 44vw;
  max-width: 620px;
  max-height: 620px;
  right: -12vw;
  top: -14vw;
  background: radial-gradient(circle, rgba(255, 47, 110, 0.8), transparent 66%);
}

.plan-teaser__halo--mint {
  width: 32vw;
  height: 32vw;
  left: -10vw;
  bottom: -14vw;
  background: radial-gradient(circle, rgba(155, 246, 201, 0.55), transparent 66%);
}

.plan-teaser__band {
  position: absolute;
  right: -8%;
  top: 26%;
  width: 44%;
  height: 30%;
  border-radius: var(--r-2xl);
  background: linear-gradient(150deg, rgba(255, 47, 110, 0.9), rgba(255, 106, 61, 0.65));
  transform: rotate(-13deg);
  opacity: 0.2;
}

.plan-teaser__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: center;
}

.plan-teaser__kicker {
  color: var(--mint);
}

.plan-teaser__title {
  margin: 1.2rem 0 0;
  font-size: clamp(2.15rem, 4.6vw, 4rem);
  line-height: 1.08;
  color: var(--tx-dark);
}

.plan-teaser__text {
  margin: 1.4rem 0 0;
  max-width: 46ch;
  color: var(--fg-dim);
  font-size: 1.02rem;
}

.plan-teaser__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.mini-road {
  display: grid;
  gap: 0.7rem;
  list-style: none;
  counter-reset: none;
}

.mini-road li {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1.2rem;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-md);
  background: rgba(255, 248, 240, 0.05);
  transition: transform var(--dur) var(--ease-out), border-color var(--dur),
    background var(--dur);
}

.mini-road li:hover {
  transform: translateX(6px);
  border-color: var(--line-dark-strong);
  background: rgba(255, 248, 240, 0.08);
}

.mini-road__no {
  flex: 0 0 auto;
  width: 3rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--mint);
}

.mini-road li:nth-child(2) .mini-road__no {
  color: var(--coral);
}

.mini-road li:nth-child(3) .mini-road__no {
  color: var(--rose-bright);
}

.mini-road li:nth-child(4) .mini-road__no {
  color: var(--violet-bright);
}

.mini-road li:nth-child(5) .mini-road__no {
  color: var(--tx-dark);
}

.mini-road b {
  display: block;
  font-size: 1rem;
  color: var(--tx-dark);
}

.mini-road div span {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.84rem;
  color: var(--fg-dim);
}

/* ==========================================================================
   DOWNLOADS
   ========================================================================== */
.downloads {
  background: var(--cream);
  color: var(--tx-light);
}

.dl-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.85rem, 1.6vw, 1.25rem);
}

.dl-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding: 0.85rem 0.85rem 1.15rem;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1.5px solid var(--line-light);
  transition: transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.dl-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-float);
}

.dl-card__media {
  display: block;
  overflow: hidden;
  border-radius: var(--r-md);
  aspect-ratio: 4 / 5;
  background: var(--ink);
}

.dl-card__media--story {
  aspect-ratio: 9 / 16;
}

.dl-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.dl-card:hover .dl-card__media img {
  transform: scale(1.035);
}

.dl-card__meta {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding-inline: 0.25rem;
}

.dl-card__meta b {
  font-size: 0.98rem;
  line-height: 1.35;
}

.dl-card__meta span {
  font-size: 0.76rem;
  color: var(--tx-light-dim);
}

.dl-card--link {
  justify-content: center;
  gap: 1.2rem;
  min-height: 210px;
  padding: 1.6rem;
  background: linear-gradient(135deg, #4d2fe0 0%, #a41d63 100%);
  border-color: transparent;
  color: #fff;
}

.dl-card--link .dl-card__meta b {
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.dl-card--link .dl-card__meta span {
  color: #ffffff;
  font-size: 0.86rem;
  line-height: 1.65;
}

.dl-card__icon {
  display: inline-grid;
  place-items: center;
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.18);
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* ==========================================================================
   CLOSING (gradient)
   ========================================================================== */
.closing {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5rem, 10vw, 9rem);
}

.closing__inner {
  position: relative;
  z-index: 2;
  text-align: center;
}

.closing__brand {
  color: #fff;
  justify-content: center;
}

.closing__title {
  margin: 2rem 0 0;
  font-size: clamp(2.3rem, 5.6vw, 4.8rem);
  line-height: 1.08;
  color: #fff;
}

.closing__line {
  margin: 1.1rem 0 0;
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2.2vw, 1.8rem);
  color: rgba(255, 255, 255, 0.95);
}

.closing__ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  margin-top: 2.4rem;
}

.closing__note {
  margin: 2.2rem 0 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.86);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1100px) {
  .engines__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .engine {
    min-height: 240px;
  }
}

@media (max-width: 980px) {
  .hero__bottom {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.75rem;
    align-items: start;
  }

  .hero__aside {
    max-width: 640px;
  }

  .manifesto__grid,
  .def-card,
  .plan-teaser__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .def-card__left {
    padding-right: 0;
    padding-bottom: 1.5rem;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .manifesto__label {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }

  .manifesto__note {
    max-width: 100%;
    width: 100%;
    border-top: 1px solid var(--line-light);
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .levers__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lever {
    min-height: 0;
  }

  .plan-teaser__grid {
    gap: 2.5rem;
  }
}

@media (max-width: 860px) {
  .hero__inner {
    min-height: auto;
    padding-top: 2.5rem;
    padding-bottom: 3.5rem;
  }

  .hero__scroll {
    display: none;
  }

  .hero__ring {
    top: 6%;
    right: -18%;
    opacity: 0.7;
  }

  .hero__stat--note {
    margin-left: 0;
    text-align: left;
    flex-basis: 100%;
  }
}

@media (max-width: 720px) {
  .hero__top {
    flex-direction: column;
    gap: 1rem;
  }

  .hero__chips {
    gap: 0.5rem;
    flex-wrap: wrap;
  }

  .hero__chip {
    padding: 0.55rem 0.75rem;
  }

  .hero__word-wrap {
    gap: 0.5rem;
  }

  .hero__word-cn {
    margin-bottom: 0.5rem;
    transform: rotate(-2deg);
  }

  .hero__headline {
    font-size: clamp(2.1rem, 10.5vw, 3rem);
  }

  .hero__stats {
    gap: 1rem 1.5rem;
  }

  .hero__stat strong {
    font-size: 1.9rem;
  }

  .def-card {
    padding: 1.5rem;
    box-shadow: 6px 6px 0 var(--rose);
  }

  .vs-table__head {
    display: none;
  }

  .vs-table {
    border: 0;
    background: transparent;
    box-shadow: none;
    overflow: visible;
  }

  .vs-table__body {
    display: grid;
    gap: 0.9rem;
  }

  .vs-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    border: 1.5px solid var(--line-light-strong);
    border-radius: var(--r-md);
    overflow: hidden;
    background: var(--white);
  }

  .vs-row__dim {
    background: var(--ink);
    color: var(--tx-dark);
  }

  .vs-cell {
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr);
    gap: 0.6rem;
    padding: 0.85rem 1rem;
    border-left: 0;
  }

  .vs-cell::before {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--tx-light-mute);
    padding-top: 0.2rem;
  }

  .vs-cell--seo::before {
    content: "SEO";
  }

  .vs-cell--geo::before {
    content: "GEO";
    color: var(--rose-deep);
  }

  .vs-cell--seo {
    border-top: 1px solid var(--line-light);
  }

  .vs-cell--geo {
    border-top: 1px solid var(--line-light);
  }

  .quote-banner {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
    gap: 0.9rem;
  }

  .quote-banner cite {
    white-space: normal;
  }

  .engines__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .engine-flow {
    flex-direction: column;
    align-items: stretch;
  }

  .engine-flow__arrow {
    transform: rotate(90deg);
    align-self: center;
  }

  .dl-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .hero__word {
    font-size: clamp(5.6rem, 36vw, 8rem);
  }

  .hero__ctas .btn,
  .plan-teaser__ctas .btn,
  .closing__ctas .btn {
    width: 100%;
  }

  .steps,
  .levers__grid,
  .engines__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .step-card,
  .engine {
    min-height: 0;
  }

  .engine h3 br {
    display: none;
  }

  .hero__chips {
    width: 100%;
  }

  .hero__chip {
    flex: 1 1 auto;
    align-items: center;
    text-align: center;
  }

  .manifesto__big {
    font-size: clamp(1.85rem, 9vw, 2.4rem);
  }

  .dl-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .dl-card__media {
    aspect-ratio: 4 / 5;
  }
}

@media (max-width: 380px) {
  .brand__insight {
    display: none;
  }
}