:root {
  --bg: #0b0d0f;
  --panel: #121518;
  --panel-2: #181c20;
  --line: #2a3035;
  --text: #f2efe8;
  --muted: #9ba19f;
  --accent: #ff6a3d;
  --accent-2: #ffb36a;
  --green: #a7e46b;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
  opacity: .022;
  background-image: radial-gradient(circle at 20% 30%, #fff 0 1px, transparent 1px), radial-gradient(circle at 70% 65%, #fff 0 1px, transparent 1px);
  background-size: 19px 23px, 29px 31px;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.section-shell { width: min(var(--max), calc(100% - 48px)); margin-inline: auto; }
.section-block { padding-top: 130px; padding-bottom: 130px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 30;
  width: min(1180px, calc(100% - 32px));
  height: 66px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 18px 0 20px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 14px;
  background: rgba(14, 16, 18, .78);
  backdrop-filter: blur(18px);
  box-shadow: 0 10px 35px rgba(0,0,0,.24);
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 16px; font-weight: 750; letter-spacing: .04em; white-space: nowrap; }
.brand-mark { width: 28px; height: 28px; position: relative; display: inline-block; transform: rotate(-7deg); }
.brand-mark i { position: absolute; width: 13px; height: 13px; background: var(--accent); border: 1px solid #ffab8f; }
.brand-mark i:nth-child(1) { top: 0; left: 7px; transform: skewY(-28deg); }
.brand-mark i:nth-child(2) { left: 1px; top: 12px; background: #e44d24; transform: skewY(28deg); }
.brand-mark i:nth-child(3) { right: 1px; top: 12px; background: #ff8b54; transform: skewY(-28deg); }
.site-nav { display: flex; gap: 34px; color: #b7bcba; font-size: 14px; }
.site-nav a, .site-footer a { transition: color .2s ease; }
.site-nav a:hover, .site-footer a:hover { color: var(--text); }
.mobile-nav-cta { display: none; }
.header-cta { justify-self: end; min-width: 124px; padding: 12px 16px; border-radius: 9px; color: #17100c; background: var(--accent); font-size: 13px; font-weight: 750; text-align: center; }
.header-cta span { margin-left: 10px; }
.menu-button { display: none; border: 0; background: transparent; color: white; }

.hero { min-height: 100vh; padding-top: 144px; padding-bottom: 84px; display: grid; grid-template-columns: .94fr 1.06fr; align-items: center; gap: 6vw; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 25px; color: #b7bcb9; font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow span { width: 24px; height: 2px; background: var(--accent); }
.hero h1, .section-heading h2, .how h2, .practice h2, .custom h2, .final-cta h2 { margin: 0; font-size: clamp(52px, 6.7vw, 92px); line-height: 1.02; letter-spacing: -.065em; font-weight: 650; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-lead { max-width: 570px; margin: 32px 0 0; color: var(--muted); font-size: 18px; line-height: 1.85; }
.hero-actions { display: flex; align-items: center; gap: 30px; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; min-width: 162px; padding: 17px 20px; border-radius: 8px; font-size: 14px; font-weight: 750; }
.button-primary { color: #190e08; background: var(--accent); box-shadow: 0 12px 32px rgba(255,106,61,.2); }
.text-link { display: flex; align-items: center; gap: 10px; color: #d4d4d0; font-size: 14px; }
.play { display: grid; place-items: center; width: 30px; height: 30px; padding-left: 2px; border: 1px solid #40474b; border-radius: 50%; font-size: 9px; }
.hero-proof { display: flex; gap: 38px; margin-top: 56px; padding-top: 25px; border-top: 1px solid var(--line); }
.hero-proof div { display: flex; flex-direction: column; gap: 5px; }
.hero-proof strong { font-family: Georgia, serif; font-size: 25px; font-weight: 500; }
.hero-proof span { color: #747b79; font-size: 11px; }

.hero-visual { position: relative; min-height: 620px; overflow: hidden; border: 1px solid #242a2d; border-radius: 20px; background: radial-gradient(circle at 50% 46%, #24282a 0, #14171a 45%, #0e1012 75%); }
.visual-grid, .cta-grid { position: absolute; inset: 0; opacity: .24; background-image: linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(to bottom, transparent, black 28%, black 75%, transparent); }
.cube-stage { position: absolute; inset: 0; display: grid; place-items: center; perspective: 900px; }
.cube { position: relative; width: 190px; height: 190px; transform-style: preserve-3d; transform: rotateX(-22deg) rotateY(38deg); animation: cubeFloat 7s ease-in-out infinite; }
.cube-face { position: absolute; width: 190px; height: 190px; display: grid; place-items: center; border: 2px solid rgba(255,255,255,.7); background: rgba(255,106,61,.76); box-shadow: inset 0 0 45px rgba(0,0,0,.18); color: #301106; font-family: Georgia, serif; font-size: 55px; backface-visibility: visible; }
.cube-face b { font-weight: 500; }
.face-front { transform: translateZ(95px); }
.face-back { transform: rotateY(180deg) translateZ(95px); grid-template-columns: repeat(2, 1fr); padding: 42px; font-size: 34px; }
.face-right { transform: rotateY(90deg) translateZ(95px); background: rgba(255,145,91,.7); }
.face-left { transform: rotateY(-90deg) translateZ(95px); grid-template-columns: repeat(2, 1fr); padding: 52px; background: rgba(205,69,36,.75); font-size: 36px; }
.face-top { transform: rotateX(90deg) translateZ(95px); background: rgba(255,187,119,.78); }
.face-bottom { transform: rotateX(-90deg) translateZ(95px); background: rgba(185,55,27,.75); }
@keyframes cubeFloat { 0%,100% { transform: rotateX(-22deg) rotateY(38deg) translateY(0); } 50% { transform: rotateX(-16deg) rotateY(52deg) translateY(-14px); } }
.visual-tag { position: absolute; display: flex; align-items: center; gap: 8px; padding: 9px 12px; border: 1px solid #343a3d; border-radius: 20px; background: rgba(17,20,22,.82); color: #c7ccca; font-size: 11px; backdrop-filter: blur(8px); }
.visual-tag span { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }
.tag-one { top: 18%; right: 8%; }
.tag-two { bottom: 20%; left: 8%; }
.axis-label { position: absolute; color: #646a69; font: 10px/1 monospace; }
.axis-x { right: 13%; bottom: 33%; color: #ff7655; }.axis-y { left: 18%; top: 27%; color: #79ca75; }.axis-z { right: 23%; top: 24%; color: #77a9ef; }
.visual-caption { position: absolute; right: 24px; bottom: 20px; margin: 0; color: #7e8583; font-size: 11px; text-transform: uppercase; letter-spacing: .12em; }
.visual-caption span { color: var(--accent); margin-right: 8px; }
.mini-net { position: absolute; left: 25px; top: 22px; width: 78px; height: 56px; }
.mini-net i { position: absolute; width: 18px; height: 18px; border: 1px solid #7a7f7f; }
.mini-net i:nth-child(1) { left: 20px; top: 19px; background: var(--accent); }.mini-net i:nth-child(2) { left: 1px; top: 19px; }.mini-net i:nth-child(3) { left: 39px; top: 19px; }.mini-net i:nth-child(4) { left: 58px; top: 19px; }.mini-net i:nth-child(5) { left: 20px; top: 0; }.mini-net i:nth-child(6) { left: 20px; top: 38px; }

.marquee { overflow: hidden; padding: 19px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #0e1113; }
.marquee div { display: flex; width: max-content; gap: 36px; align-items: center; animation: scroll 22s linear infinite; color: #8d9491; font-size: 13px; white-space: nowrap; }
.marquee i { color: var(--accent); font-style: normal; }
@keyframes scroll { to { transform: translateX(-50%); } }

.section-heading { max-width: 720px; margin-bottom: 65px; }
.section-heading h2, .how h2, .practice h2, .custom h2, .final-cta h2 { font-size: clamp(42px, 5vw, 68px); }
.section-heading h2 strong, .practice h2 strong, .custom h2 strong, .final-cta h2 strong { color: var(--accent); font-weight: inherit; }
.section-heading > p:last-child { max-width: 600px; margin: 24px 0 0; color: var(--muted); line-height: 1.8; }
.feature-grid { display: grid; grid-template-columns: 1.18fr .82fr; gap: 18px; }
.feature-card { position: relative; min-height: 520px; padding: 28px; overflow: hidden; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); display: flex; flex-direction: column; justify-content: space-between; }
.feature-card-large { min-height: 630px; }
.feature-card-wide { grid-column: 1 / -1; min-height: 410px; }
.card-number { position: relative; z-index: 2; color: #686f6d; font: 10px/1 monospace; letter-spacing: .08em; }
.card-copy { position: relative; z-index: 2; max-width: 520px; }
.card-copy h3 { margin: 0 0 12px; font-size: 27px; letter-spacing: -.03em; }
.card-copy p { margin: 0; color: var(--muted); line-height: 1.75; font-size: 14px; }
.chip { display: inline-block; margin: 18px 7px 0 0; padding: 6px 10px; border: 1px solid #30383b; border-radius: 20px; color: #8c9390; font-size: 10px; }
.feature-video { display: block; width: min(100%, 620px); aspect-ratio: 3 / 2; margin: 22px auto; border: 1px solid #303638; border-radius: 12px; background: #101214; object-fit: cover; box-shadow: 0 22px 52px rgba(0,0,0,.28); }
.feature-video-wide { width: min(58%, 660px); margin-right: 3%; }
.views-demo { position: relative; height: 210px; margin: 20px 0; }
.blocks { position: absolute; left: 55px; top: 65px; width: 120px; transform: rotate(-6deg); }
.blocks i { position: absolute; width: 50px; height: 50px; border: 1px solid #858b89; background: #1d2225; transform: skewY(-12deg); }
.blocks i:nth-child(2) { left: 51px; }.blocks i:nth-child(3) { left: 102px; }.blocks i:nth-child(4) { top: -51px; left: 51px; background: var(--accent); }.blocks i:nth-child(5) { top: -51px; left: 102px; }
.views-lines { position: absolute; right: 30px; top: 40px; display: grid; gap: 18px; }
.views-lines span { width: 45px; height: 45px; border: 1px solid #454c4d; background-image: linear-gradient(#454c4d 1px, transparent 1px), linear-gradient(90deg,#454c4d 1px,transparent 1px); background-size: 15px 15px; }
.how { background: #e8e3d8; color: #151719; }
.how-inner { display: grid; grid-template-columns: .8fr 1.2fr; gap: 10vw; }
.how-sticky { position: sticky; top: 130px; align-self: start; }
.how .eyebrow { color: #5b605d; }
.how h2 { letter-spacing: -.055em; }
.how-sticky > p { max-width: 440px; color: #686d69; line-height: 1.8; }
.step-progress { height: 2px; max-width: 300px; margin-top: 40px; background: #c8c4ba; }
.step-progress i { display: block; width: 33%; height: 100%; background: var(--accent); }
.steps { margin: 0; padding: 0; list-style: none; }
.steps li { min-height: 245px; display: grid; grid-template-columns: 70px 1fr; gap: 20px; padding: 38px 0; border-top: 1px solid #c6c2b9; }
.steps li:last-child { border-bottom: 1px solid #c6c2b9; }
.steps li > span { color: var(--accent); font: 13px/1 monospace; }
.steps p { margin: 0 0 14px; color: #6c716d; font-size: 12px; text-transform: uppercase; letter-spacing: .1em; }
.steps h3 { margin: 0 0 22px; font-size: clamp(24px, 3vw, 36px); line-height: 1.3; letter-spacing: -.04em; font-weight: 620; }
.steps small { color: #7a7f7b; }

.practice-panel { min-height: 650px; display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 7%; padding: 65px; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: radial-gradient(circle at 80% 50%, #27211f 0, #16191b 43%, #111416 75%); }
.practice-copy > p:not(.eyebrow) { margin: 26px 0; color: var(--muted); line-height: 1.8; }
.practice-copy ul { padding: 0; margin: 30px 0 0; list-style: none; color: #c3c7c5; font-size: 13px; }
.practice-copy li { margin: 14px 0; }
.practice-copy li span { display: inline-grid; place-items: center; width: 20px; height: 20px; margin-right: 10px; border-radius: 50%; color: #17200f; background: var(--green); font-size: 11px; font-weight: 800; }
.quiz-mock { transform: rotate(2deg); padding: 25px; border: 1px solid #3b4243; border-radius: 14px; background: #15191c; box-shadow: 0 30px 60px rgba(0,0,0,.35); }
.mock-top { display: flex; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid #2e3436; color: #7f8785; font-size: 11px; }
.mock-top b { color: var(--accent); font: 12px/1 monospace; }
.quiz-mock > p { margin: 20px 0; font-size: 14px; }
.mock-question { display: grid; grid-template-columns: 150px 1fr; gap: 25px; min-height: 220px; align-items: center; }
.tiny-net { position: relative; width: 120px; height: 120px; }
.tiny-net i { position: absolute; width: 38px; height: 38px; border: 1px solid #7b8280; background: #202528; }
.tiny-net i:nth-child(1) { left: 40px; top: 40px; background: var(--accent); }.tiny-net i:nth-child(2) { left: 2px; top: 40px; }.tiny-net i:nth-child(3) { left: 78px; top: 40px; }.tiny-net i:nth-child(4) { left: 40px; top: 2px; }.tiny-net i:nth-child(5) { left: 40px; top: 78px; }.tiny-net i:nth-child(6) { left: 78px; top: 78px; }
.mock-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.mock-options span { display: grid; place-items: center; height: 66px; border: 1px solid #343b3d; border-radius: 8px; color: #909694; background: #1c2124; }
.mock-options .selected { border-color: var(--accent); color: var(--accent); background: rgba(255,106,61,.1); }
.mock-result { display: flex; justify-content: space-between; align-items: center; padding-top: 16px; border-top: 1px solid #2e3436; }
.mock-result > span:first-child { color: var(--green); font-size: 12px; }
.mock-result .mock-action { color: #1d0e08; border-radius: 6px; padding: 10px 13px; background: var(--accent); font-size: 11px; font-weight: 700; }

.custom { display: grid; grid-template-columns: .8fr 1.2fr; gap: 9%; }
.custom-columns { border-top: 1px solid var(--line); }
.custom-columns article { display: grid; grid-template-columns: 60px 1fr; gap: 25px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.custom-icon { display: grid; place-items: center; width: 50px; height: 50px; border: 1px solid #4a5051; border-radius: 8px; color: var(--accent); font-size: 22px; }
.custom-columns h3 { margin: 0 0 10px; font-size: 22px; }
.custom-columns p { margin: 0; color: var(--muted); line-height: 1.75; font-size: 14px; }

.faq { border-top: 1px solid var(--line); }
.faq-list { max-width: 820px; margin-left: auto; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; justify-content: space-between; gap: 20px; padding: 25px 4px; cursor: pointer; list-style: none; font-size: 18px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary span { color: var(--accent); transition: transform .25s ease; }
.faq details[open] summary span { transform: rotate(45deg); }
.faq details p { max-width: 680px; margin: -5px 0 28px; color: var(--muted); line-height: 1.8; }

.final-cta { position: relative; min-height: 650px; display: flex; flex-direction: column; align-items: center; justify-content: center; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; text-align: center; background: radial-gradient(circle at center, #2b211d 0, #16191b 48%, #0f1214 75%); }
.final-cta > *:not(.cta-grid) { position: relative; z-index: 1; }
.final-cta > p { color: #aaaead; letter-spacing: .12em; font-size: 12px; }
.final-cta h2 { margin: 12px 0 35px; }
.search-pill { width: min(410px, calc(100% - 44px)); display: grid; grid-template-columns: 42px 1fr 40px; align-items: center; padding: 7px; border-radius: 12px; background: #f0ece4; color: #17191a; text-align: left; }
.search-pill > span { text-align: center; font-size: 22px; }.search-pill b { padding: 13px; border-left: 1px solid #cac6bd; font-size: 14px; }.search-pill i { display: grid; place-items: center; height: 40px; border-radius: 8px; background: var(--accent); font-style: normal; }
.final-cta small { margin-top: 15px; color: #676e6c; }

.site-footer { min-height: 170px; display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 30px; color: #707775; font-size: 11px; }
.site-footer .brand { color: var(--text); font-size: 14px; }
.site-footer div { display: flex; gap: 24px; justify-self: center; }
.site-footer > span { justify-self: end; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-nav { position: absolute; top: 72px; left: 0; right: 0; display: none; flex-direction: column; gap: 0; padding: 10px; border: 1px solid var(--line); border-radius: 12px; background: #121517; }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 14px; }
  .site-nav .mobile-nav-cta { display: block; color: var(--accent); font-weight: 700; }
  .header-cta { display: none; }
  .menu-button { display: grid; gap: 6px; justify-self: end; }
  .menu-button span:not(.sr-only) { display: block; width: 23px; height: 1px; background: #e8e8e4; }
  .hero { grid-template-columns: 1fr; padding-top: 130px; }
  .hero-copy { max-width: 700px; }
  .hero-visual { min-height: 560px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card-wide { grid-column: auto; }
  .how-inner, .practice-panel, .custom { grid-template-columns: 1fr; }
  .how-sticky { position: static; }
  .practice-panel { padding: 42px; }
}

@media (max-width: 620px) {
  .section-shell { width: min(100% - 28px, var(--max)); }
  .section-block { padding-top: 90px; padding-bottom: 90px; }
  .hero { padding-top: 118px; gap: 55px; }
  .hero h1 { font-size: 50px; }
  .hero-lead { font-size: 16px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 20px; }
  .hero-proof { gap: 22px; justify-content: space-between; }
  .hero-proof strong { font-size: 21px; }
  .hero-proof span { font-size: 9px; }
  .hero-visual { min-height: 450px; }
  .cube { width: 135px; height: 135px; }
  .cube-face { width: 135px; height: 135px; font-size: 38px; }
  .face-front { transform: translateZ(67.5px); }.face-back { transform: rotateY(180deg) translateZ(67.5px); padding: 30px; }.face-right { transform: rotateY(90deg) translateZ(67.5px); }.face-left { transform: rotateY(-90deg) translateZ(67.5px); padding: 35px; }.face-top { transform: rotateX(90deg) translateZ(67.5px); }.face-bottom { transform: rotateX(-90deg) translateZ(67.5px); }
  .section-heading h2, .how h2, .practice h2, .custom h2, .final-cta h2 { font-size: 42px; }
  .feature-card { min-height: 520px; padding: 22px; }
  .feature-card-wide { min-height: 520px; }
  .feature-video-wide { width: 100%; margin-right: auto; }
  .practice-panel { padding: 28px 18px; }
  .quiz-mock { margin-top: 35px; padding: 18px; }
  .mock-question { grid-template-columns: 1fr; }
  .tiny-net { margin-inline: auto; }
  .custom-columns { margin-top: 45px; }
  .faq-list { margin-top: -25px; }
  .faq summary { font-size: 16px; }
  .final-cta { min-height: 550px; }
  .site-footer { grid-template-columns: 1fr; padding: 55px 0; text-align: center; }
  .site-footer .brand, .site-footer div, .site-footer > span { justify-self: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}