.spark-hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: radial-gradient(circle at 68% 29%, var(--ocean) 0, transparent 38%), var(--ocean-deep);
}

.spark-hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(94, 203, 190, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(94, 203, 190, .06) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, transparent, #000 75%);
  pointer-events: none;
}

.spark-hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: .94fr 1.06fr;
  align-items: center;
  gap: 5%;
  min-height: 690px;
  padding-block: 80px 72px;
}

.spark-hero-copy { position: relative; z-index: 2; }
.spark-hero h1 { margin: 23px 0 25px; font-size: clamp(43px, 4.4vw, 64px); line-height: 1.42; letter-spacing: -.08em; font-weight: 800; }
.spark-hero h1 span { color: var(--cyan); }
.spark-hero-copy > p:not(.spark-hero-note) { max-width: 520px; margin: 0; color: var(--line); font-size: 15px; line-height: 2.05; }
.spark-hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 27px; margin-top: 33px; }
.spark-hero-note { margin: 47px 0 0; color: var(--muted-on-dark); font-size: 10px; }

.spark-hero-visual { position: relative; min-width: 0; aspect-ratio: 1.07; border: 1px solid rgba(86, 226, 209, .22); box-shadow: 0 42px 90px rgba(0, 0, 0, .28); }
.spark-hero-visual::after { position: absolute; inset: 0; content: ""; background: linear-gradient(180deg, rgba(6, 34, 31, .16), transparent 60%, rgba(6, 34, 31, .62)); pointer-events: none; }
.spark-hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.spark-visual-label { position: absolute; z-index: 1; right: 20px; bottom: 18px; left: 20px; display: flex; align-items: baseline; justify-content: space-between; gap: 12px; color: var(--border-strong); font-family: var(--font-en); font-size: 9px; font-weight: 700; letter-spacing: .12em; }
.spark-visual-label strong { color: var(--white); font-size: 12px; letter-spacing: .16em; }
.spark-hero-tail { position: relative; display: flex; justify-content: space-between; gap: 20px; padding-bottom: 24px; color: var(--muted-on-dark); font-family: var(--font-en); font-size: 9px; font-weight: 700; letter-spacing: .13em; }
.spark-hero-tail a { color: var(--border-strong); }
.spark-hero-tail a span { margin-left: 14px; color: var(--cyan); font-size: 15px; }

.spark-spec-strip { border-bottom: 1px solid var(--line); background: var(--seafoam); }
.spark-spec-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.spark-spec-grid > div { display: flex; flex-direction: column; justify-content: center; min-height: 130px; padding: 23px 25px; }
.spark-spec-grid > div + div { border-left: 1px solid var(--line); }
.spark-spec-grid strong { font-family: var(--font-en); font-size: clamp(22px, 2.4vw, 31px); line-height: 1.2; letter-spacing: -.045em; }
.spark-spec-grid span { margin-top: 7px; color: var(--ink-soft); font-size: 11px; }

.spark-overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8%; }
.spark-overview-copy { padding-top: 8px; }
.spark-overview-copy p { margin: 0 0 19px; color: var(--ink-soft); font-size: 14px; }
.spark-overview-copy .spark-lead { color: var(--ink); font-size: 20px; line-height: 1.6; font-weight: 700; }
.spark-overview-copy .text-link { margin-top: 15px; }
.spark-architecture { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin-top: 74px; border-top: 1px solid var(--line); }
.spark-architecture-label { grid-column: 1 / -1; padding-top: 15px; color: var(--cyan-deep); font-family: var(--font-en); font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.spark-architecture > div:not(.spark-architecture-label) { min-height: 170px; padding: 29px 27px 0 0; }
.spark-architecture > div:not(.spark-architecture-label) + div { padding-left: 30px; border-left: 1px solid var(--line); }
.spark-architecture > div > span { display: block; margin-bottom: 11px; color: var(--cyan-deep); font-family: var(--font-en); font-size: 12px; font-weight: 700; }
.spark-architecture strong { font-size: 17px; }
.spark-architecture p { max-width: 280px; margin: 7px 0 0; color: var(--ink-soft); font-size: 12px; }

.spark-cases { background: var(--pale); }
.spark-heading-row { display: flex; align-items: end; justify-content: space-between; gap: 45px; margin-bottom: 46px; }
.spark-heading-row > p { max-width: 430px; margin: 0 0 5px; color: var(--ink-soft); font-size: 13px; }
.spark-case { display: grid; grid-template-columns: 155px 1fr; gap: 29px; padding: 30px 31px 33px; border: 1px solid var(--line); background: var(--white); }
.spark-case-featured { grid-template-columns: 230px 1fr; gap: 55px; margin-bottom: 16px; padding: 43px 47px; border-top: 4px solid var(--cyan-deep); }
.spark-case-index { display: flex; flex-direction: column; gap: 9px; color: var(--cyan-deep); font-family: var(--font-en); font-size: 10px; font-weight: 700; letter-spacing: .13em; }
.spark-case-index strong { color: var(--ink-soft); font-size: 9px; line-height: 1.5; }
.spark-case h3 { margin: -7px 0 16px; font-size: clamp(22px, 2.15vw, 29px); line-height: 1.48; letter-spacing: -.06em; }
.spark-case-featured h3 { font-size: clamp(28px, 2.7vw, 37px); }
.spark-case-main > p { max-width: 650px; margin: 0 0 18px; color: var(--ink-soft); font-size: 13px; }
.spark-case ul { display: flex; flex-direction: column; gap: 6px; margin: 0 0 21px; padding: 0; list-style: none; }
.spark-case li { display: flex; align-items: baseline; gap: 8px; color: var(--ink-soft); font-size: 11px; }
.spark-case li::before { flex: none; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan-deep); content: ""; }
.spark-source-link { display: inline-flex; align-items: center; gap: 9px; margin: 5px 25px 0 0; padding-bottom: 2px; border-bottom: 1px solid var(--border-strong); color: var(--palm); font-size: 11px; font-weight: 700; }
.spark-source-link:hover { color: var(--ink); }
.spark-source-link span { font-size: 15px; font-weight: 400; }
.spark-case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.spark-case-grid .spark-case { display: flex; flex-direction: column; gap: 21px; }
.spark-case-grid .spark-case-index { flex-direction: row; justify-content: space-between; gap: 12px; }
.spark-case-grid .spark-case-main { display: flex; flex-direction: column; flex: 1; }
.spark-case-grid .spark-case ul { margin-bottom: 16px; }
.spark-case-grid .spark-source-link { align-self: start; margin-top: auto; }

.spark-llms { border-top: 1px solid var(--line); background: var(--white); }
.llm-tabs { overflow: hidden; border: 1px solid var(--line); background: var(--white); box-shadow: 0 24px 60px rgba(16, 70, 64, .07); }
.llm-tablist { display: flex; gap: 4px; overflow-x: auto; padding: 8px; border-bottom: 1px solid var(--line); background: var(--seafoam); scrollbar-width: thin; }
.llm-tab { display: inline-flex; flex: 1 0 160px; align-items: center; justify-content: center; min-height: 54px; padding: 10px 18px; border: 1px solid transparent; color: var(--palm); background: transparent; font-size: 12px; font-weight: 800; line-height: 1.5; text-align: center; white-space: nowrap; transition: color .2s, background .2s, border-color .2s; }
.llm-tab:hover { border-color: var(--line); background: var(--seafoam); }
.llm-tabs.is-enhanced .llm-tab[aria-selected="true"] { border-color: var(--navy); color: var(--white); background: var(--navy); }
.llm-tabs.is-enhanced .llm-tab[aria-selected="true"]:focus-visible { outline-color: var(--cyan); }
.llm-panel { min-width: 0; padding: 39px 44px 45px; scroll-margin-top: 100px; }
.llm-panel + .llm-panel { border-top: 1px solid var(--line); }
.llm-tabs.is-enhanced .llm-panel + .llm-panel { border-top: 0; }
.llm-panel[hidden] { display: none; }
.llm-panel h3 { margin: 0 0 12px; font-size: clamp(23px, 2.5vw, 32px); line-height: 1.45; letter-spacing: -.055em; }
.llm-panel p { max-width: 900px; margin: 0 0 18px; color: var(--ink-soft); font-size: 13px; }
.llm-panel h4 { margin: 32px 0 12px; font-size: 15px; }
.llm-panel ol, .llm-panel ul { margin: 0 0 19px; padding-left: 1.5em; color: var(--palm); font-size: 13px; }
.llm-panel li + li { margin-top: 9px; }
.llm-panel pre { max-width: 100%; overflow-x: auto; margin: 10px 0 20px; padding: 17px 20px; border: 1px solid var(--palm); border-radius: 4px; color: var(--line); background: var(--ocean-deep); font-size: 12px; line-height: 1.7; white-space: pre; }
.llm-panel pre code { font: inherit; }
.llm-panel :not(pre) > code { padding: .1em .35em; border-radius: 3px; color: var(--ocean); background: var(--seafoam); font-size: .92em; }
.llm-panel a:not(.button) { color: var(--palm); text-decoration: underline; text-underline-offset: 3px; }
.llm-panel a:not(.button):hover { color: var(--ink); }
.llm-panel .llm-note { max-width: none; padding: 15px 18px; border-left: 3px solid var(--cyan-deep); background: var(--seafoam); }
.llm-disclaimer { max-width: 960px; margin: 19px 0 0; color: var(--ink-soft); font-size: 11px; line-height: 1.9; }

.spark-reality { padding-block: 88px; color: var(--white); background: radial-gradient(circle at 12% 48%, var(--ocean), transparent 43%), var(--ocean-deep); }
.spark-reality-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 9%; }
.spark-reality h2 em { color: var(--cyan); }
.spark-reality-grid > div:last-child { padding-top: 8px; }
.spark-reality-grid p { margin: 0 0 17px; color: var(--line); font-size: 14px; }
.spark-reality-grid strong { color: var(--white); }
.spark-reality-grid .text-link { margin-top: 14px; }

.spark-plans { background: var(--white); }
.spark-plan-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.spark-plan { display: flex; flex-direction: column; min-height: 400px; padding: 24px; border: 1px solid var(--line); background: var(--seafoam); }
.spark-plan-featured { border-color: var(--muted-on-dark); box-shadow: inset 0 4px 0 var(--cyan-deep), 0 20px 34px rgba(16, 70, 64, .06); }
.spark-plan-top { display: flex; justify-content: space-between; gap: 10px; color: var(--ink-soft); font-family: var(--font-en); font-size: 9px; font-weight: 700; letter-spacing: .12em; }
.spark-plan-top span:last-child { color: var(--cyan-deep); }
.spark-node-art { display: flex; align-items: center; justify-content: center; gap: 5px; height: 78px; margin: 25px 0 8px; background: radial-gradient(ellipse at center, var(--line), transparent 70%); }
.spark-node-art i { display: block; width: 44px; height: 38px; border: 1px solid var(--palm); border-top: 5px solid #b3a371; border-radius: 3px; background: linear-gradient(135deg, var(--palm), var(--ocean)); box-shadow: 5px 6px 11px rgba(10, 47, 43, .18); transform: skewY(-10deg); }
.spark-plan h3 { margin: 0; font-family: var(--font-en); font-size: 27px; line-height: 1.35; letter-spacing: -.045em; }
.spark-plan h3 em { color: var(--cyan-deep); font-style: normal; }
.spark-plan > p { margin: 6px 0 19px; color: var(--ink-soft); font-size: 12px; }
.spark-plan-price { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px; margin-bottom: 23px; }
.spark-plan-price strong { font-family: var(--font-en); font-size: clamp(31px, 3.2vw, 40px); line-height: 1.15; letter-spacing: -.06em; }
.spark-plan-price span { color: var(--ink-soft); font-size: 11px; font-weight: 700; }
.spark-plan > a { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 50px; margin-top: auto; padding: 11px 13px; border: 1px solid var(--border-strong); font-size: 11px; font-weight: 800; transition: color .2s, background .2s, border-color .2s; }
.spark-plan > a:hover { border-color: var(--navy); color: var(--white); background: var(--navy); }
.spark-plan-featured > a { border-color: var(--cyan); background: var(--cyan); }
.spark-plan > a span { font-size: 18px; font-weight: 400; }
.spark-plan-note { max-width: 900px; margin: 18px 0 0; color: var(--ink-soft); font-size: 11px; }
.spark-plan-note a { color: var(--palm); text-decoration: underline; text-underline-offset: 3px; }
.spark-plan-note a:hover { color: var(--ink); }
.spark-plan-help { display: flex; align-items: center; justify-content: space-between; gap: 25px; margin-top: 36px; padding-top: 23px; border-top: 1px solid var(--line); }
.spark-plan-help > span { font-size: 15px; font-weight: 700; }

.spark-sources { border-top: 1px solid var(--line); background: var(--seafoam); }
.spark-sources-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 10%; }
.spark-sources-grid > div:first-child > p { max-width: 420px; margin: 22px 0 0; color: var(--ink-soft); font-size: 13px; }
.spark-sources-list { border-top: 1px solid var(--line); }
.spark-sources-list a { display: grid; grid-template-columns: 45px 1fr 20px; align-items: center; gap: 13px; min-height: 74px; border-bottom: 1px solid var(--line); transition: color .2s; }
.spark-sources-list a:hover { color: var(--cyan-deep); }
.spark-sources-list a > span:first-child { color: var(--cyan-deep); font-family: var(--font-en); font-size: 11px; font-weight: 700; }
.spark-sources-list strong { font-size: 13px; }
.spark-sources-list a > span:last-child { font-size: 18px; }

@media (max-width: 1050px) {
  .spark-hero-inner { min-height: 610px; }
  .spark-hero h1 { font-size: clamp(40px, 4.5vw, 53px); }
  .spark-case-featured { grid-template-columns: 170px 1fr; gap: 30px; }
}

@media (max-width: 850px) {
  .spark-hero-inner { grid-template-columns: 1fr; gap: 38px; padding-top: 80px; }
  .spark-hero h1 { font-size: clamp(44px, 7vw, 62px); }
  .spark-hero-visual { width: min(100%, 660px); aspect-ratio: 1.4; margin-inline: auto; }
  .spark-spec-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spark-spec-grid > div:nth-child(3) { border-left: 0; }
  .spark-spec-grid > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .spark-overview-grid, .spark-reality-grid, .spark-sources-grid { grid-template-columns: 1fr; gap: 28px; }
  .spark-heading-row { align-items: start; flex-direction: column; gap: 18px; }
  .spark-heading-row > p { max-width: 660px; }
  .spark-case-featured { grid-template-columns: 1fr; gap: 21px; }
  .spark-case-featured .spark-case-index { flex-direction: row; justify-content: space-between; }
  .spark-plan-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .spark-plan-grid .spark-plan:last-child { grid-column: 1 / -1; }
  .spark-plan-grid .spark-plan:last-child .spark-node-art { height: 80px; }
}

@media (max-width: 620px) {
  .spark-hero-inner { gap: 30px; padding-top: 65px; padding-bottom: 35px; }
  .spark-hero h1 { font-size: clamp(36px, 9.1vw, 49px); }
  .spark-hero-copy > p:not(.spark-hero-note) { font-size: 13px; }
  .spark-hero-actions { gap: 18px; }
  .spark-hero-note { margin-top: 30px; font-size: 9px; }
  .spark-hero-visual { aspect-ratio: 1.18; }
  .spark-visual-label { right: 12px; bottom: 10px; left: 12px; font-size: 7px; }
  .spark-visual-label strong { font-size: 9px; }
  .spark-hero-tail { font-size: 8px; }
  .spark-spec-grid > div { min-height: 100px; padding: 17px 13px; }
  .spark-spec-grid strong { font-size: clamp(18px, 5vw, 26px); }
  .spark-spec-grid span { font-size: 9px; }
  .spark-overview-copy .spark-lead { font-size: 18px; }
  .spark-overview-copy p, .spark-reality-grid p { font-size: 13px; }
  .spark-architecture { grid-template-columns: 1fr; margin-top: 46px; }
  .spark-architecture > div:not(.spark-architecture-label), .spark-architecture > div:not(.spark-architecture-label) + div { min-height: 0; padding: 20px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  .spark-architecture > div > span { margin-bottom: 4px; }
  .spark-architecture p { max-width: none; }
  .spark-heading-row { margin-bottom: 30px; }
  .spark-heading-row > p { font-size: 12px; }
  .spark-case-grid, .spark-plan-grid { grid-template-columns: 1fr; }
  .spark-case, .spark-case-featured { padding: 26px 23px; }
  .spark-case-grid .spark-case { gap: 18px; }
  .spark-case-grid .spark-case-index strong { text-align: right; }
  .spark-case h3, .spark-case-featured h3 { font-size: 25px; }
  .spark-case-main > p { font-size: 12px; }
  .spark-case li { font-size: 10px; }
  .spark-source-link { margin-right: 12px; font-size: 10px; }
  .llm-tab { flex-basis: 150px; min-height: 51px; padding-inline: 12px; font-size: 11px; }
  .llm-panel { padding: 27px 22px 31px; }
  .llm-panel h3 { font-size: 23px; }
  .llm-panel pre { padding: 13px 15px; font-size: 11px; }
  .spark-reality { padding-block: 75px; }
  .spark-plan-grid .spark-plan:last-child { grid-column: auto; }
  .spark-plan { min-height: 0; }
  .spark-plan-help { align-items: start; flex-direction: column; gap: 15px; }
  .spark-sources-list a { grid-template-columns: 30px 1fr 18px; min-height: 69px; }
  .spark-sources-list strong { font-size: 11px; }
}