/* Conversion layer: dark promo hero with oversized 20%, code-first CTAs, calculator, perks.
   Hero and promo blocks stay dark in both themes; lime is the single action color. */
:root{--promo-bg:#10150e;--promo-surface:#1a2217;--promo-line:#2e3a28;--promo-text:#f1f5ea;--promo-muted:#a9b5a1;--glow:#c6f36b;--glow-ink:#15200c}

/* Buttons */
.button-glow{background:var(--glow);color:var(--glow-ink);box-shadow:0 0 0 0 rgba(198,243,107,.45),0 10px 30px rgba(198,243,107,.22)}
.button-glow:hover{background:#d6fb86;box-shadow:0 0 0 6px rgba(198,243,107,.16),0 14px 36px rgba(198,243,107,.3)}
.copy-code{border:1px dashed var(--glow);background:transparent;color:var(--glow);border-radius:10px;padding:8px 16px;font-size:14px;font-weight:650;min-height:40px;transition:background .2s}
.copy-code:hover{background:rgba(198,243,107,.12)}

/* Hero */
.promo-hero{background:radial-gradient(900px 480px at 78% 30%,rgba(198,243,107,.13),transparent 65%),var(--promo-bg);color:var(--promo-text);padding:72px 0 0;overflow:hidden}
.promo-hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.promo-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:650;letter-spacing:.04em;color:var(--glow);background:rgba(198,243,107,.1);border:1px solid rgba(198,243,107,.25);border-radius:999px;padding:6px 14px}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--glow);box-shadow:0 0 0 0 rgba(198,243,107,.6);animation:pulse 1.8s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(198,243,107,0)}100%{box-shadow:0 0 0 0 rgba(198,243,107,0)}}
.promo-hero h1{color:var(--promo-text);font-size:clamp(2.4rem,4.6vw,4.1rem);line-height:1.22;letter-spacing:-.03em;margin-top:22px}
.promo-hero h1 em{font-style:normal;color:var(--glow);display:inline-block;margin-left:.15em}
.promo-lead{color:var(--promo-muted);font-size:17px;line-height:1.85;margin-top:22px;max-width:560px}
.promo-lead strong{color:var(--promo-text);background:rgba(198,243,107,.14);border-radius:6px;padding:1px 8px;font-family:Consolas,"SF Mono",monospace;letter-spacing:.04em}
.promo-actions{display:flex;align-items:center;gap:26px;margin-top:32px;flex-wrap:wrap}
.promo-actions .button{min-height:58px;font-size:16px;padding-inline:28px;gap:18px}
.promo-secondary{color:var(--promo-text);font-weight:600;font-size:15px;text-decoration:underline;text-underline-offset:5px;text-decoration-color:var(--promo-line)}
.promo-secondary:hover{text-decoration-color:var(--glow)}
.promo-trust{list-style:none;padding:0;margin:30px 0 0;display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13px;color:var(--promo-muted)}
.promo-trust span{color:var(--glow);font-weight:700;margin-right:7px}

.offer-card{position:relative;background:linear-gradient(160deg,#212b1d,#151b12);border:1px solid var(--promo-line);border-radius:28px;padding:28px 30px 24px;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.offer-card:before{content:"";position:absolute;inset:-1px;border-radius:28px;padding:1px;background:linear-gradient(140deg,rgba(198,243,107,.6),transparent 45%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.offer-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--promo-muted)}
.offer-live{color:var(--glow-ink);background:var(--glow);border-radius:6px;padding:2px 9px;font-weight:700;font-size:12px}
.offer-number{font:800 clamp(6rem,11vw,9rem)/.95 "Segoe UI",Arial,sans-serif;letter-spacing:-.06em;color:var(--glow);margin-top:18px;text-shadow:0 0 60px rgba(198,243,107,.25)}
.offer-number span{font-size:.45em;letter-spacing:0;margin-left:4px}
.offer-caption{font-size:20px;font-weight:650;color:var(--promo-text);margin-top:6px}
.offer-code{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-top:22px;padding:14px 16px;border:1px solid var(--promo-line);border-radius:14px;background:rgba(0,0,0,.25)}
.offer-code small{display:block;font-size:12px;color:var(--promo-muted)}
.offer-code strong{font:700 24px/1.3 Consolas,"SF Mono",monospace;letter-spacing:.08em;color:var(--promo-text)}
.offer-cta{width:100%;margin-top:14px;min-height:56px;font-size:16px}
.offer-proof{margin:18px 0 0;display:flex;align-items:center;gap:12px}
.offer-proof img{width:170px;height:auto;border-radius:8px;border:1px solid var(--promo-line)}
.offer-proof figcaption{font-size:12px;color:var(--promo-muted)}

.stats-band{display:grid;grid-template-columns:repeat(4,1fr);margin-top:64px;border-top:1px solid var(--promo-line)}
.stats-band div{padding:28px 10px 32px;display:flex;flex-direction:column;gap:4px}
.stats-band div+div{border-left:1px solid var(--promo-line);padding-left:28px}
.stats-band strong{font-size:clamp(1.6rem,2.6vw,2.2rem);font-weight:750;letter-spacing:-.03em;color:var(--promo-text);line-height:1.2}
.stats-band span{font-size:13px;color:var(--promo-muted)}

/* Headings */
.section-heading.wide{max-width:760px}
.section-heading.wide h2{margin-top:6px}

/* Perks */
.perk-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;grid-template-rows:auto auto;gap:18px}
.perk{padding:28px 28px 30px;border:1px solid var(--line);border-radius:24px;background:var(--surface);display:flex;flex-direction:column}
.perk h3{font-size:21px;margin-top:14px}
.perk p{font-size:14px;line-height:1.85;margin-top:10px;color:var(--muted)}
.perk .text-link{margin-top:auto;padding-top:16px}
.perk-tag{align-self:flex-start;font-size:12px;font-weight:700;letter-spacing:.04em;color:var(--accent-ink);background:var(--accent-soft);border-radius:6px;padding:4px 10px}
.perk-main{grid-row:span 2;background:var(--promo-bg);border-color:var(--promo-line);color:var(--promo-text)}
.perk-main .perk-tag{background:var(--glow);color:var(--glow-ink)}
.perk-main .perk-figure{font:800 clamp(4.5rem,8vw,6.5rem)/1 "Segoe UI",Arial,sans-serif;letter-spacing:-.06em;color:var(--glow);margin-top:26px}
.perk-main h3{font-size:28px;color:var(--promo-text)}
.perk-main p{color:var(--promo-muted);font-size:15px}
.perk-main .text-link{color:var(--glow)}

/* Calculator */
.calc-section{background:var(--soft);padding:88px 0;border-block:1px solid var(--line)}
.calc-inner{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}
.calc-intro h2{margin-top:8px}
.calc-intro p{margin-top:16px;color:var(--muted);max-width:440px}
.calculator{background:var(--surface);border:1px solid var(--line);border-radius:26px;padding:30px;box-shadow:var(--shadow)}
.calc-label{font-size:13px;font-weight:650;color:var(--muted)}
.calc-input{display:flex;align-items:center;gap:10px;margin-top:10px;border:1.5px solid var(--line);border-radius:14px;padding:4px 18px;background:var(--bg)}
.calc-input:focus-within{border-color:var(--focus)}
.calc-input input{flex:1;min-width:0;border:0;background:transparent;color:var(--text);font:700 28px/1.6 "Segoe UI",Arial,sans-serif;outline:none}
.calc-input span{font-size:14px;color:var(--muted);font-weight:600}
.calc-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.calc-presets button{border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:9px;padding:7px 14px;font-size:13px;font-weight:600;min-height:36px}
.calc-presets button[aria-pressed="true"]{background:var(--button);color:var(--button-text);border-color:var(--button)}
.calc-result{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:10px;margin-top:22px}
.calc-result div{border-radius:14px;background:var(--soft);padding:14px 16px;display:flex;flex-wrap:wrap;align-items:baseline;gap:0 6px}
.calc-result small{width:100%;font-size:12px;color:var(--muted)}
.calc-result strong{font-size:24px;font-weight:750;letter-spacing:-.02em}
.calc-result span{font-size:12px;color:var(--muted)}
.calc-result .calc-year{background:var(--promo-bg)}
.calc-result .calc-year small,.calc-result .calc-year span{color:var(--promo-muted)}
.calc-result .calc-year strong{color:var(--glow);font-size:32px}
.calc-cta{width:100%;margin-top:18px}
.calc-note{font-size:12px;color:var(--muted);margin-top:12px}

/* Where to fill the code */
.where-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.where{position:relative;padding:30px 28px;border:1px solid var(--line);border-radius:24px;background:var(--surface);display:flex;flex-direction:column}
.where:first-child{border-color:var(--focus);box-shadow:0 0 0 3px var(--accent-soft)}
.where-num{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-weight:800;background:var(--button);color:var(--button-text)}
.where h3{font-size:21px;margin-top:18px}
.where h3 em{font-style:normal;font-size:13px;font-weight:650;color:var(--accent-ink);background:var(--accent-soft);border-radius:6px;padding:2px 8px;vertical-align:middle}
.where p{font-size:14px;line-height:1.85;margin-top:10px;color:var(--muted)}
.where .button,.where .text-link{margin-top:auto;padding-top:0}
.where>.button{margin-top:22px}
.where>.text-link{padding-top:18px}

/* Highlights value chips */
.highlights-grid .card-label>span:last-child{font-size:18px;font-weight:750;color:var(--accent-ink);letter-spacing:-.01em}

/* Download intro CTA */
.download-intro .button{margin-top:22px}
.download-intro h2{margin-top:6px}

/* Final promo */
.final-promo{display:flex;justify-content:space-between;align-items:center;gap:36px;padding:44px 48px;margin-bottom:72px;border-radius:28px;background:radial-gradient(600px 300px at 90% 0%,rgba(198,243,107,.16),transparent 70%),var(--promo-bg);color:var(--promo-text)}
.final-promo h2{color:var(--promo-text);font-size:clamp(1.7rem,3vw,2.5rem);margin-top:16px}
.final-promo h2 em{font-style:normal;color:var(--glow);font-family:Consolas,"SF Mono",monospace;letter-spacing:.04em}
.final-promo p:not(.promo-eyebrow){color:var(--promo-muted);margin-top:8px}
.final-actions{display:flex;flex-direction:column;gap:12px;min-width:260px}
.final-actions .button{min-height:58px;font-size:16px}
.copy-code-wide{min-height:48px}

/* Mobile sticky bar */
.mobile-cta b{font-family:Consolas,"SF Mono",monospace;color:var(--accent-ink);letter-spacing:.04em}

@media(max-width:1150px){.perk-grid{grid-template-columns:1fr 1fr}.perk-main{grid-row:auto;grid-column:1/-1}.calc-inner{gap:36px}}
@media(max-width:900px){.promo-hero-inner{grid-template-columns:1fr;gap:40px}.offer-card{max-width:520px}.calc-inner{grid-template-columns:1fr}.where-grid{grid-template-columns:1fr}.final-promo{flex-direction:column;align-items:flex-start}.final-actions{width:100%}}
@media(max-width:700px){
  .promo-hero{padding-top:36px}
  .promo-hero h1{font-size:clamp(2.1rem,9vw,2.7rem);margin-top:18px}
  .promo-lead{font-size:15px;margin-top:16px}
  .promo-actions{flex-direction:column;align-items:stretch;gap:14px;margin-top:24px}
  .promo-actions .button{width:100%}
  .promo-secondary{text-align:center}
  .promo-trust{flex-direction:column;gap:6px;margin-top:22px}
  .offer-card{padding:22px 20px 20px;border-radius:22px}
  .offer-number{font-size:6.2rem}
  .offer-code strong{font-size:21px}
  .stats-band{grid-template-columns:1fr 1fr;margin-top:40px}
  .stats-band div{padding:20px 4px}
  .stats-band div+div{padding-left:4px;border-left:0}
  .stats-band div:nth-child(even){border-left:1px solid var(--promo-line);padding-left:18px}
  .stats-band div:nth-child(n+3){border-top:1px solid var(--promo-line)}
  .perk-grid{grid-template-columns:1fr;gap:14px}
  .perk{padding:24px;border-radius:20px}
  .calc-section{padding:54px 0}
  .calculator{padding:20px;border-radius:20px}
  .calc-input input{font-size:24px}
  .calc-result{grid-template-columns:1fr 1fr}
  .calc-result .calc-year{grid-column:1/-1}
  .where{padding:24px;border-radius:20px}
  .final-promo{padding:30px 22px;border-radius:22px;margin-bottom:45px}
  .final-actions{min-width:0}
}
@media(prefers-reduced-motion:reduce){.pulse{animation:none}}

/* OKX brand marks: identify the promoted platform; site identity stays 启跳 QiJump */
.offer-brand{display:inline-flex;align-items:center;gap:10px}
.offer-brand img{height:22px;width:auto;padding-right:10px;border-right:1px solid var(--promo-line)}
.okx-wordmark{display:block;height:30px;width:auto;margin-bottom:16px}
:root[data-theme="dark"] .okx-wordmark{filter:invert(1)}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .okx-wordmark{filter:invert(1)}}
.app-badge{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.app-badge img{width:60px;height:60px;border-radius:15px;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.app-badge strong{display:block;font-size:16px;font-weight:700}
.app-badge small{display:block;font-size:12px;color:var(--muted)}
.final-logo{display:block;height:28px;width:auto;margin-bottom:18px;opacity:.95}
.mobile-cta-icon{display:none}
@media(max-width:700px){.mobile-cta-icon{display:block;width:38px;height:38px;border-radius:10px;flex:none}.mobile-cta>span{margin-right:auto}.mobile-cta{gap:12px}.offer-brand img{height:19px}.okx-wordmark{height:26px}.final-logo{height:24px}}

/* Identity disclosure (Safe Browsing: make clear this is not okx.com) */
.promo-disclosure{margin-top:18px;max-width:560px;font-size:12.5px;line-height:1.8;color:var(--promo-muted);border-left:2px solid var(--promo-line);padding-left:12px}
.offer-note{margin-top:12px;font-size:12px;color:var(--promo-muted);text-align:center}

/* Site logo: 启跳 QiJump (rising jump arc) */
.brand-logo{display:block;flex:none;padding:0;background:none;border-radius:12px}
:root[data-theme="dark"] .brand-logo rect{fill:#1f2a1a}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]) .brand-logo rect{fill:#1f2a1a}}