:root {
  --ink: #111820;
  --muted: #626b78;
  --lime: #007aff;
  --lime-soft: #eaf3ff;
  --paper: #f5f7fb;
  --line: #dce3ec;
  --white: #fff;
  --radius: 24px;
  --page: min(1040px, calc(100vw - 40px));
}

* { box-sizing: border-box; }

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

[id] { scroll-margin-top: 96px; }

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(rgba(17, 24, 32, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17, 24, 32, .025) 1px, transparent 1px),
    radial-gradient(circle at 10% 6%, rgba(0, 122, 255, .14), transparent 22rem),
    var(--paper);
  background-size: 32px 32px, 32px 32px, auto, auto;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }

.site-header {
  position: sticky;
  top: 12px;
  z-index: 20;
  width: var(--page);
  height: 68px;
  margin: 12px auto 0;
  padding: 0 18px;
  border: 1px solid rgba(220, 227, 236, .88);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, .8);
  box-shadow: 0 12px 35px rgba(38, 57, 78, .07);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  flex: none;
  border-radius: 13px;
  background: var(--ink);
  color: var(--lime);
  font-size: 20px;
  font-weight: 900;
  transform: rotate(-5deg);
}

.brand strong, .brand small { display: block; }
.brand strong { font-size: 17px; letter-spacing: .06em; }
.brand small { margin-top: 3px; color: var(--muted); font-size: 11px; letter-spacing: .08em; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 29px;
  font-size: 15px;
  font-weight: 600;
}

.site-nav > a { transition: opacity .2s ease; }
.site-nav > a:hover { opacity: .58; }

.site-nav .nav-cta {
  padding: 10px 18px;
  border: 1px solid var(--ink);
  border-radius: 999px;
}

.menu-button { display: none; }

.hero {
  width: var(--page);
  min-height: 590px;
  margin: 0 auto;
  padding: 54px 0 68px;
  display: grid;
  grid-template-columns: .96fr 1.04fr;
  align-items: center;
  gap: 46px;
}

.eyebrow {
  margin: 0 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #707985;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .16em;
}

.eyebrow > span {
  width: 22px;
  height: 2px;
  background: var(--ink);
}

.hero h1, .section h2 {
  margin: 0;
  font-size: clamp(47px, 5.2vw, 66px);
  line-height: 1.06;
  letter-spacing: -.055em;
}

.hero h1 em, .contact h2 em {
  position: relative;
  color: var(--ink);
  font-style: normal;
  z-index: 0;
}

.hero h1 em::after, .contact h2 em::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: -5px;
  bottom: 4px;
  left: -5px;
  height: .32em;
  border-radius: 999px;
  background: var(--lime);
  transform: rotate(-1.5deg);
}

.hero-lead {
  max-width: 470px;
  margin: 25px 0 22px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.mini-program-entry {
  width: min(460px, 100%);
  margin-bottom: 24px;
  padding: 16px 18px 14px 22px;
  border: 1px solid rgba(0, 122, 255, .2);
  border-radius: 20px;
  display: grid;
  grid-template-columns: 1fr 126px;
  gap: 18px;
  align-items: center;
  background: rgba(255, 255, 255, .86);
  box-shadow: 0 18px 45px rgba(31, 58, 91, .12);
  backdrop-filter: blur(16px);
}

.mini-program-copy { text-align: left; }
.mini-program-kicker {
  display: inline-block;
  margin-bottom: 10px;
  color: #007aff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
}
.mini-program-copy strong { display: block; font-size: 23px; line-height: 1.25; }
.mini-program-copy p { margin: 8px 0 0; color: var(--muted); font-size: 14px; line-height: 1.5; }
.mini-program-code { margin: 0; text-align: center; }
.mini-program-code img {
  width: 126px;
  aspect-ratio: 1;
  border: 7px solid white;
  border-radius: 16px;
  object-fit: cover;
  box-shadow: 0 7px 20px rgba(31, 58, 91, .14);
}
.mini-program-code figcaption { margin-top: 7px; color: var(--ink); font-size: 13px; font-weight: 800; }

.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
}

.button {
  min-height: 52px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: var(--white); }
.button-primary span { color: var(--lime); font-size: 20px; }
.text-link { font-size: 16px; font-weight: 700; }
.text-link span { display: inline-block; margin-left: 8px; transition: transform .2s ease; }
.text-link:hover span { transform: translateX(4px); }

.hero-meta {
  margin-top: 34px;
  display: flex;
  gap: 23px;
  color: #717b88;
  font-size: 14px;
}

.hero-meta span::before {
  content: "•";
  margin-right: 6px;
  color: #007aff;
  font-weight: 900;
}

.hero-visual { position: relative; min-height: 465px; display: grid; place-items: center; }

.orbit {
  position: absolute;
  border: 1px solid rgba(21, 24, 18, .14);
  border-radius: 50%;
}

.orbit::after {
  content: "";
  position: absolute;
  width: 11px;
  height: 11px;
  border: 4px solid var(--paper);
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 1px rgba(21, 24, 18, .12);
}

.orbit-one { width: 445px; height: 445px; transform: rotate(-14deg); }
.orbit-one::after { top: 90px; right: 32px; }
.orbit-two { width: 335px; height: 335px; transform: rotate(26deg); }
.orbit-two::after { bottom: 33px; left: 78px; background: var(--ink); }

.product-card {
  position: relative;
  z-index: 2;
  width: min(360px, 80vw);
  padding: 12px;
  border: 1px solid rgba(21, 24, 18, .1);
  border-radius: 29px;
  background: rgba(255, 255, 255, .91);
  box-shadow: 0 32px 70px rgba(31, 58, 91, .18);
  transform: rotate(1.7deg);
  backdrop-filter: blur(15px);
}

.card-top, .card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-top { padding: 4px 4px 12px; color: #737c88; font-size: 13px; font-weight: 800; letter-spacing: .05em; }
.status i { width: 7px; height: 7px; margin-right: 6px; display: inline-block; border-radius: 50%; background: #007aff; box-shadow: 0 0 0 5px rgba(0, 122, 255, .12); }
.card-number { font-variant-numeric: tabular-nums; }

.compare {
  position: relative;
  height: 310px;
  overflow: hidden;
  border-radius: 23px;
  background: #dfe8f3;
  touch-action: pan-y;
}

.compare-image, .compare-before img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.compare-before { position: absolute; inset: 0 auto 0 0; width: 52%; overflow: hidden; }
.compare-before img {
  width: min(336px, calc(88vw - 22px));
  max-width: none;
  filter: grayscale(.18) saturate(.58) brightness(.82) contrast(.88);
}

.compare-label {
  position: absolute;
  top: 14px;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(21, 24, 18, .66);
  color: white;
  font-size: 13px;
  font-weight: 700;
  backdrop-filter: blur(10px);
}

.label-before { left: 14px; }
.label-after { right: 14px; background: var(--lime); color: white; }

.compare-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 52%;
  width: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  box-shadow: 0 0 8px rgba(0, 0, 0, .16);
}

.compare-handle::before {
  content: "";
  position: absolute;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 8px 25px rgba(0, 0, 0, .19);
}

.compare-handle span { position: relative; z-index: 1; margin: 0 5px; color: #007aff; font-size: 19px; font-weight: 900; }
.compare-range { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: ew-resize; }

.card-bottom { padding: 15px 4px 3px; }
.card-bottom small, .card-bottom strong { display: block; }
.card-bottom small { margin-bottom: 4px; color: #818b97; font-size: 13px; }
.card-bottom strong { font-size: 15px; }
.round-arrow { width: 39px; height: 39px; display: grid; place-items: center; border-radius: 50%; background: var(--lime-soft); font-size: 18px; }

.floating-note {
  position: absolute;
  z-index: 3;
  padding: 13px 16px;
  border: 1px solid rgba(21, 24, 18, .12);
  border-radius: 15px;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 17px 35px rgba(35, 42, 24, .12);
  font-size: 13px;
  font-weight: 700;
  backdrop-filter: blur(14px);
}

.floating-note b { font-size: 18px; }
.note-one { top: 30px; left: 0; transform: rotate(-7deg); }
.note-one b { margin-left: 20px; color: #007aff; }
.note-two { right: -5px; bottom: 25px; transform: rotate(4deg); }
.note-two b { margin-right: 6px; }

.statement {
  padding: 17px 0;
  overflow: hidden;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}

.statement p {
  width: max-content;
  margin: 0;
  color: #71766c;
  font-size: clamp(23px, 2.7vw, 33px);
  font-weight: 900;
  letter-spacing: -.03em;
  animation: marquee 22s linear infinite;
}

.statement span { color: var(--ink); -webkit-text-stroke: 1px var(--ink); }
@keyframes marquee { to { transform: translateX(-35%); } }

.section { width: var(--page); margin: 0 auto; padding: 96px 0; }

.section-heading {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 20px 54px;
  align-items: end;
}

.section-heading .eyebrow { grid-column: 1 / -1; }
.section-heading h2 { font-size: clamp(42px, 4.8vw, 58px); }
.section-heading h2 span, .about h2 span { color: #007aff; }
.section-heading > p:last-child { margin: 0 0 4px; color: var(--muted); font-size: 17px; line-height: 1.75; }

.feature-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1.4fr .8fr;
  gap: 18px;
}

.feature {
  position: relative;
  min-height: 240px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.feature-main { grid-row: span 2; min-height: 498px; background: linear-gradient(145deg, #f2f7ff 0%, #dfedff 100%); }
.feature-main::after { content: ""; position: absolute; right: -100px; bottom: -130px; width: 440px; height: 440px; border: 80px solid rgba(0, 122, 255, .16); border-radius: 50%; }
.feature-dark { background: var(--ink); color: white; }
.feature-light { background: white; }
.feature-index { color: #7a8592; font-size: 13px; font-weight: 800; letter-spacing: .12em; }
.feature-icon { position: relative; z-index: 1; color: #007aff; font-size: 62px; line-height: 1; }
.feature-dark .feature-icon { color: var(--lime); }
.feature h3 { position: relative; z-index: 1; margin: 0 0 12px; font-size: 26px; }
.feature p { position: relative; z-index: 1; max-width: 460px; margin: 0; color: #626b78; font-size: 16px; line-height: 1.75; }
.feature-dark p { color: #b6bbaf; }
.feature-tags { position: relative; z-index: 1; display: flex; flex-wrap: wrap; gap: 8px; }
.feature-tags span { padding: 9px 13px; border: 1px solid rgba(17, 24, 32, .12); border-radius: 999px; background: rgba(255,255,255,.62); font-size: 13px; }

.capabilities {
  width: 100%;
  max-width: none;
  padding: 96px max(20px, calc((100vw - 1040px) / 2));
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 68px;
  background: var(--ink);
  color: white;
}

.eyebrow.light { color: #92988c; }
.eyebrow.light > span { background: var(--lime); }
.capability-intro h2 { position: sticky; top: 100px; font-size: clamp(42px, 4.5vw, 55px); }
.capability-list article { padding: 29px 0; border-top: 1px solid #343e49; display: grid; grid-template-columns: 50px 1fr; gap: 5px 18px; }
.capability-list article:last-child { border-bottom: 1px solid #3b3f37; }
.capability-list span { grid-row: span 2; color: var(--lime); font-size: 13px; font-weight: 800; }
.capability-list h3 { margin: 0; font-size: 24px; }
.capability-list p { margin: 12px 0 0; color: #b7c0ca; font-size: 16px; line-height: 1.75; }

.about {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 68px;
  align-items: center;
}

.about-number {
  min-height: 430px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    repeating-linear-gradient(90deg, rgba(21,24,18,.055) 0, rgba(21,24,18,.055) 1px, transparent 1px, transparent 34px),
    var(--lime);
  font-family: Arial Black, sans-serif;
  color: white;
  font-size: clamp(120px, 15vw, 210px);
  font-weight: 900;
  letter-spacing: -.17em;
  text-indent: -.12em;
  text-shadow: 0 18px 50px rgba(0, 54, 140, .28);
  transform: rotate(-1.2deg);
}

.about-content h2 { font-size: clamp(42px, 4.8vw, 56px); }
.about-lead { margin-top: 28px !important; color: var(--ink) !important; font-size: 18px !important; }
.about-content > p { color: var(--muted); font-size: 16px; line-height: 1.8; }

.company-facts { margin: 30px 0 0; border-top: 1px solid var(--line); }
.company-facts div { padding: 17px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 110px 1fr; }
.company-facts dt { color: #7b8592; font-size: 14px; }
.company-facts dd { margin: 0; font-size: 15px; font-weight: 700; }

.contact {
  width: min(1040px, calc(100vw - 40px));
  margin-bottom: 24px;
  padding: 64px;
  border: 1px solid #cfe2ff;
  border-radius: 30px;
  background:
    radial-gradient(circle at 86% 12%, rgba(0, 122, 255, .16), transparent 15rem),
    var(--lime-soft);
}

.contact-row { display: grid; grid-template-columns: 1.3fr .7fr; gap: 60px; align-items: end; }
.contact h2 { font-size: clamp(46px, 5.4vw, 64px); }
.contact-row > div p { margin: 0 0 28px; color: var(--muted); font-size: 16px; line-height: 1.75; }
.button-dark { background: var(--ink); color: white; }
.button-dark span { color: var(--lime); font-size: 20px; }

.site-footer {
  width: var(--page);
  min-height: 158px;
  margin: 0 auto;
  padding: 40px 0;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 50px;
  align-items: center;
}

.footer-brand { display: flex; align-items: center; gap: 15px; }
.footer-brand strong { font-size: 15px; }
.footer-brand p, .footer-info p { margin: 6px 0 0; color: #717b88; font-size: 13px; }
.footer-info { text-align: right; }
.filing { margin-top: 10px; display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 6px 14px; color: #727d8a; font-size: 13px; }
.filing a { text-decoration: underline; text-underline-offset: 3px; }
.filing a:hover { color: var(--ink); }
.back-top { width: 43px; height: 43px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font-size: 18px; }

@media (max-width: 900px) {
  :root { --page: min(100% - 32px, 720px); }
  .site-header { top: 8px; height: 64px; margin-top: 8px; }
  .menu-button { width: 42px; height: 42px; padding: 12px 9px; border: 0; border-radius: 50%; display: flex; flex-direction: column; justify-content: center; gap: 6px; background: var(--ink); }
  .menu-button span { width: 100%; height: 1px; display: block; background: white; transition: transform .2s ease; }
  .menu-button[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .site-nav { position: absolute; top: 70px; right: 0; left: 0; padding: 24px; border: 1px solid var(--line); border-radius: 20px; display: none; flex-direction: column; align-items: stretch; gap: 19px; background: rgba(255,255,255,.97); box-shadow: 0 20px 50px rgba(31,52,78,.13); backdrop-filter: blur(20px); }
  .site-nav.open { display: flex; }
  .site-nav .nav-cta { text-align: center; }
  .hero { padding: 50px 0 68px; grid-template-columns: 1fr; gap: 32px; }
  .hero-copy { text-align: center; }
  .eyebrow, .hero-actions, .hero-meta { justify-content: center; }
  .hero-lead { margin-right: auto; margin-left: auto; }
  .mini-program-entry { margin-right: auto; margin-left: auto; }
  .hero-visual { min-height: 450px; }
  .orbit-one { width: min(440px, 92vw); height: min(440px, 92vw); }
  .orbit-two { width: min(330px, 72vw); height: min(330px, 72vw); }
  .note-one { left: 2%; }
  .note-two { right: 1%; }
  .section { padding: 74px 0; }
  .section-heading, .capabilities, .about, .contact-row { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-main { grid-column: 1 / -1; grid-row: auto; min-height: 430px; }
  .capabilities { width: 100%; padding: 74px max(16px, calc((100vw - 720px) / 2)); gap: 38px; }
  .capability-intro h2 { position: static; }
  .about { gap: 42px; }
  .about-number { min-height: 330px; }
  .contact { width: var(--page); padding: 52px 40px; }
  .site-footer { grid-template-columns: 1fr auto; }
  .footer-info { grid-column: 1 / -1; grid-row: 2; text-align: left; }
  .filing { justify-content: flex-start; }
}

@media (max-width: 580px) {
  :root { --page: calc(100% - 28px); }
  .brand small { display: none; }
  .hero { min-height: auto; padding: 42px 0 56px; overflow: hidden; }
  .hero h1 { font-size: 42px; }
  .hero-lead { font-size: 17px; }
  .mini-program-entry { padding: 15px; grid-template-columns: 1fr 112px; gap: 12px; }
  .mini-program-copy strong { font-size: 20px; }
  .mini-program-copy p { font-size: 13px; }
  .mini-program-code img { width: 112px; }
  .hero-actions { flex-direction: column; gap: 20px; }
  .hero-meta { margin-top: 28px; gap: 10px 16px; flex-wrap: wrap; }
  .hero-visual { min-height: 405px; }
  .product-card { width: min(335px, 88vw); padding: 11px; }
  .compare { height: 292px; }
  .floating-note { padding: 10px 12px; }
  .note-one { top: 7px; }
  .note-two { bottom: 5px; }
  .section-heading { gap: 22px; }
  .section-heading h2, .about-content h2 { font-size: 40px; }
  .feature-grid { grid-template-columns: 1fr; margin-top: 38px; }
  .feature-main { grid-column: auto; min-height: 390px; }
  .feature { min-height: 245px; padding: 26px; }
  .about-number { min-height: 270px; }
  .contact { padding: 40px 24px; border-radius: 26px; }
  .contact h2 { font-size: 40px; }
  .site-footer { grid-template-columns: 1fr auto; gap: 25px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}