:root {
  --ink: #111315;
  --ink-soft: #181b1e;
  --ink-raised: #202428;
  --paper: #f0eee8;
  --paper-deep: #d8d4ca;
  --white: #fbfaf6;
  --muted: #a6a7a3;
  --line-dark: #373b3e;
  --line-light: #c9c5bc;
  --orange: #f05a28;
  --orange-dark: #c64218;
  --font-display: Bahnschrift, "Arial Narrow", "Microsoft YaHei UI", sans-serif;
  --font-body: "Segoe UI", "Microsoft YaHei UI", Arial, sans-serif;
  --page-pad: clamp(20px, 4vw, 72px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--white);
  background: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
html[data-language="zh"] .lang-en { display: none !important; }
html[data-language="en"] .lang-zh { display: none !important; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 16px;
  color: var(--ink);
  background: var(--paper);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  z-index: 20;
  inset: 0 0 auto;
  height: 86px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 0 var(--page-pad);
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark { font: 800 24px/1 var(--font-display); letter-spacing: .04em; }
.brand-line { width: 28px; height: 2px; background: var(--orange); }
.brand-name { overflow: hidden; color: #b8b9b5; font-size: 12px; white-space: nowrap; text-overflow: ellipsis; }
.main-nav { display: flex; gap: 34px; }
.main-nav a { position: relative; color: #c9cac6; font-size: 13px; }
.main-nav a::after { content: ""; position: absolute; right: 100%; bottom: -10px; left: 0; height: 2px; background: var(--orange); transition: right .25s ease; }
.main-nav a:hover::after, .main-nav a:focus-visible::after { right: 0; }
.language-switch { justify-self: end; display: flex; align-items: center; gap: 8px; color: #666a6c; }
.language-switch button { padding: 8px 3px; border: 0; color: #888b8d; background: transparent; cursor: pointer; }
.language-switch button[aria-pressed="true"] { color: var(--white); }
.language-switch button:focus-visible, .main-nav a:focus-visible { outline: 2px solid var(--orange); outline-offset: 4px; }

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.13fr) minmax(440px, .87fr);
  gap: clamp(40px, 7vw, 130px);
  align-items: center;
  padding: 150px var(--page-pad) 80px;
  overflow: hidden;
}
.hero-grid { position: absolute; inset: 86px 0 0; display: grid; grid-template-columns: repeat(5, 1fr); pointer-events: none; opacity: .58; }
.hero-grid i { border-right: 1px solid rgba(255,255,255,.07); }
.hero-grid i:first-child { border-left: 1px solid rgba(255,255,255,.07); }
.hero-copy, .hero-system { position: relative; z-index: 1; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 28px; color: #bcbdb9; font-size: 12px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow-dot { width: 7px; height: 7px; background: var(--orange); }
.hero h1 { max-width: 850px; margin: 0; font: 760 clamp(54px, 5.8vw, 96px)/.94 var(--font-display); letter-spacing: -.045em; }
.hero-summary { max-width: 720px; margin: 34px 0 0; color: #b8bab7; font-size: clamp(17px, 1.35vw, 22px); line-height: 1.72; }
.hero-points { display: flex; flex-wrap: wrap; gap: 18px 36px; margin-top: 46px; }
.hero-points > span { display: flex; gap: 10px; align-items: center; color: #d2d2cd; font-size: 13px; }
.hero-points b { color: var(--orange); font-size: 10px; letter-spacing: .1em; }

.hero-system { width: 100%; min-width: 0; border: 1px solid var(--line-dark); background: rgba(17,19,21,.88); box-shadow: 18px 18px 0 #0b0c0d; }
.system-head { min-height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 0 20px; border-bottom: 1px solid var(--line-dark); color: #d7d7d2; font-size: 12px; }
.status { display: flex; align-items: center; gap: 7px; color: #858986; }
.status i { width: 6px; height: 6px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 4px rgba(240,90,40,.13); }
.system-flow { padding: 24px; }
.flow-step { display: grid; grid-template-columns: 38px 1fr; gap: 14px; padding: 15px; border: 1px solid #323639; background: var(--ink-soft); }
.flow-step.is-primary { border-color: var(--orange); }
.flow-index { color: var(--orange); font: 700 11px/1 var(--font-display); }
.flow-step strong, .flow-step small { display: block; }
.flow-step strong { margin-bottom: 8px; color: var(--white); font-size: 14px; }
.flow-step small { color: #898d8a; font-size: 11px; line-height: 1.55; }
.flow-link { position: relative; height: 22px; margin-left: 33px; border-left: 1px solid #565a5c; }
.flow-link i { position: absolute; bottom: -1px; left: -3px; width: 5px; height: 5px; border-right: 1px solid #777; border-bottom: 1px solid #777; transform: rotate(45deg); }

.section-tag { margin: 0; color: var(--orange); font: 700 11px/1.2 var(--font-display); letter-spacing: .18em; text-transform: uppercase; }
.statement-section { display: grid; grid-template-columns: minmax(140px, .35fr) 1.65fr; gap: 50px; padding: 120px var(--page-pad); color: var(--ink); background: var(--orange); }
.statement-section .section-tag { color: var(--ink); }
.statement p { margin: 0 0 24px; font-size: 16px; font-weight: 600; }
.statement h2 { max-width: 1160px; margin: 0; font: 720 clamp(35px, 4vw, 68px)/1.08 var(--font-display); letter-spacing: -.035em; }

.products-section { color: var(--ink); background: var(--paper); }
.section-intro { display: grid; grid-template-columns: .48fr 1fr .8fr; gap: 50px; align-items: end; padding: 128px var(--page-pad) 72px; }
.section-intro h2 { margin: 0; font: 720 clamp(34px, 4vw, 64px)/1.02 var(--font-display); letter-spacing: -.04em; }
.section-intro > p.lang-zh, .section-intro > p.lang-en { max-width: 500px; margin: 0; color: #5d615f; font-size: 16px; line-height: 1.7; }
.product-list { border-top: 1px solid var(--line-light); }
.product-row { position: relative; isolation: isolate; display: grid; grid-template-columns: .2fr .62fr 1fr .55fr; gap: 44px; align-items: start; min-height: 260px; padding: 62px var(--page-pad); overflow: hidden; border-bottom: 1px solid var(--line-light); transition: background .25s ease; }
.product-row:hover { background: var(--white); }
.product-row > :not(.layer-stage) { position: relative; z-index: 2; }
.product-number { color: var(--orange-dark); font: 700 13px/1 var(--font-display); }
.product-title p { margin: 0 0 11px; color: #737571; font-size: 12px; }
.product-title h3 { margin: 0; font: 700 clamp(24px, 2.2vw, 38px)/1.08 var(--font-display); letter-spacing: -.025em; }
.product-description { max-width: 680px; margin: 0; color: #4e514f; font-size: 16px; line-height: 1.8; }
.product-row ul { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; margin: 0; padding: 0; list-style: none; }
.product-row li { padding-top: 9px; border-top: 1px solid var(--line-light); color: #656865; font-size: 12px; }

.layer-stage {
  position: absolute;
  z-index: 1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: .38;
  background: transparent;
  mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,.2) 31%, #000 52%, #000 100%);
  transition: opacity .35s ease, transform .5s cubic-bezier(.16,1,.3,1);
}
.product-row:hover .layer-stage { opacity: .64; transform: scale(1.015); }
.layer-stage::after { display: none; }
.layer-stage *, .layer-stage::after { animation-play-state: paused !important; }
.product-row.is-motion-active .layer-stage *, .product-row.is-motion-active .layer-stage::after { animation-play-state: running !important; }
.is-page-hidden .layer-stage *, .is-page-hidden .layer-stage::after { animation-play-state: paused !important; }

/* World model: a changing field of relationships converges on one cognitive state. */
.world-orbit { position: absolute; top: 50%; left: 75%; border: 1px solid rgba(240,90,40,.72); border-right-color: rgba(240,90,40,.12); border-bottom-color: rgba(17,19,21,.2); border-radius: 50%; }
.world-orbit.orbit-a { width: clamp(220px, 22vw, 390px); height: clamp(110px, 11vw, 190px); margin: clamp(-95px, -5.5vw, -55px) 0 0 clamp(-195px, -11vw, -110px); transform: rotate(-18deg); }
.world-orbit.orbit-b { width: clamp(130px, 13vw, 230px); height: clamp(210px, 20vw, 350px); margin: clamp(-175px, -10vw, -105px) 0 0 clamp(-115px, -6.5vw, -65px); transform: rotate(26deg); }
.world-core { position: absolute; top: 50%; left: 75%; width: 20px; height: 20px; margin: -10px; border: 2px solid var(--orange); background: transparent; transform: rotate(45deg); }
.world-node { position: absolute; width: 9px; height: 9px; border: 1px solid rgba(17,19,21,.7); background: transparent; }
.world-node.node-a { top: 24%; left: 59%; }
.world-node.node-b { top: 26%; right: 11%; }
.world-node.node-c { right: 21%; bottom: 17%; border-color: var(--orange); }
.world-pulse { position: absolute; top: 50%; left: 75%; width: 44px; height: 44px; margin: -22px; border: 1px solid rgba(240,90,40,.7); border-radius: 50%; opacity: 0; }

/* Decision agent: several candidate paths are evaluated and collapse into one choice. */
.decision-path { --angle: 0deg; position: absolute; top: 50%; left: 51%; width: 31%; height: 1px; background: linear-gradient(90deg, rgba(17,19,21,.2), rgba(17,19,21,.72) 70%, var(--orange)); transform: rotate(var(--angle)) scaleX(.12); transform-origin: left center; }
.decision-path.path-a { --angle: -16deg; }
.decision-path.path-b { --angle: 0deg; }
.decision-path.path-c { --angle: 16deg; }
.decision-source { position: absolute; left: 48%; width: 9px; height: 9px; border: 1px solid rgba(17,19,21,.62); background: transparent; }
.decision-source.source-a { top: 29%; }
.decision-source.source-b { top: 47%; border-color: var(--orange); }
.decision-source.source-c { top: 65%; }
.decision-choice { position: absolute; top: 50%; left: 82%; width: 30px; height: 30px; margin: -15px; border: 2px solid var(--orange); background: transparent; transform: rotate(45deg); }
.decision-choice::after { content: ""; position: absolute; inset: 5px; background: var(--orange); }
.decision-scan { position: absolute; top: 13%; bottom: 13%; left: 48%; width: 2px; background: linear-gradient(transparent, var(--orange), transparent); opacity: 0; }

/* Secure execution: task packets cross only through the narrow approved gate. */
.execution-boundary { position: absolute; inset: 28px 12% 28px 50%; border: 1px solid rgba(17,19,21,.28); }
.execution-boundary::before, .execution-boundary::after { display: none; }
.execution-gate { position: absolute; top: 28%; bottom: 28%; left: 70%; width: 2px; background: var(--orange); }
.execution-packet { --travel: clamp(145px, 18vw, 320px); --reject-travel: clamp(70px, 9vw, 155px); position: absolute; left: 53%; width: 12px; height: 7px; border: 1px solid rgba(17,19,21,.76); background: transparent; }
.execution-packet.packet-a { top: 36%; }
.execution-packet.packet-b { top: 49%; border-color: var(--orange); animation-delay: .55s !important; }
.execution-packet.packet-c { top: 62%; animation-delay: 1.1s !important; }
.execution-result { position: absolute; top: 50%; right: 14%; width: 22px; height: 22px; margin-top: -11px; border: 1px solid var(--orange); }
.execution-result::before, .execution-result::after { content: ""; position: absolute; background: var(--orange); }
.execution-result::before { top: 7px; left: 3px; width: 10px; height: 2px; }
.execution-result::after { top: 3px; left: 7px; width: 2px; height: 10px; }
.execution-scan { position: absolute; top: 28px; bottom: 28px; left: 50%; width: 1px; background: linear-gradient(transparent, rgba(240,90,40,.9), transparent); opacity: 0; }

/* Cryptography-defined network: identity-bound routes carry transactions and evidence. */
.network-link { position: absolute; height: 1px; background: rgba(17,19,21,.28); transform-origin: left center; }
.network-link.link-a { top: 29%; left: 50%; width: 25%; transform: rotate(21deg); }
.network-link.link-b { top: 43%; left: 72%; width: 16%; transform: rotate(-31deg); }
.network-link.link-c { top: 72%; left: 56%; width: 20%; transform: rotate(-24deg); }
.network-link.link-d { top: 56%; left: 74%; width: 14%; transform: rotate(32deg); }
.network-node { position: absolute; width: 15px; height: 15px; margin: -7px; border: 2px solid rgba(17,19,21,.6); background: transparent; transform: rotate(45deg); }
.network-node.node-a { top: 25%; left: 49%; }
.network-node.node-b { top: 49%; left: 73%; border-color: var(--orange); }
.network-node.node-c { top: 23%; right: 10%; }
.network-node.node-d { right: 10%; bottom: 16%; }
.network-packet { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: var(--orange); opacity: 0; }
.network-packet.packet-a { top: 28%; left: 50%; }
.network-packet.packet-b { right: 11%; bottom: 18%; animation-delay: 1.25s !important; }
.network-proof { position: absolute; top: 49%; left: 73%; width: 42px; height: 42px; margin: -21px; border: 1px solid rgba(240,90,40,.6); transform: rotate(45deg); }

@media (prefers-reduced-motion: no-preference) {
  .world-orbit.orbit-a { animation: world-orbit-a 7.5s linear infinite; }
  .world-orbit.orbit-b { animation: world-orbit-b 9s linear infinite reverse; }
  .world-core { animation: world-core 2.4s cubic-bezier(.16,1,.3,1) infinite; }
  .world-node { animation: world-node 3.2s ease-in-out infinite alternate; }
  .world-node.node-b { animation-delay: -.8s; }
  .world-node.node-c { animation-delay: -1.6s; }
  .world-pulse { animation: world-pulse 2.6s cubic-bezier(.16,1,.3,1) infinite; }

  .decision-path { animation: decision-path 3.1s cubic-bezier(.16,1,.3,1) infinite; }
  .decision-path.path-a { animation-delay: -.8s; }
  .decision-path.path-c { animation-delay: -1.6s; }
  .decision-source { animation: decision-source 2.2s ease-in-out infinite alternate; }
  .decision-choice { animation: decision-choice 2.8s cubic-bezier(.16,1,.3,1) infinite; }
  .decision-scan { animation: decision-scan 3.1s cubic-bezier(.16,1,.3,1) infinite; }

  .execution-packet { animation: execution-packet 2.9s cubic-bezier(.4,0,.2,1) infinite; }
  .execution-packet.packet-c { animation-name: execution-reject; }
  .execution-result { animation: execution-result 2.9s cubic-bezier(.16,1,.3,1) infinite; animation-delay: 1.15s; }
  .execution-gate { animation: execution-gate 2.9s ease-in-out infinite; }
  .execution-scan { animation: execution-scan 3.8s linear infinite; }

  .network-packet.packet-a { animation: network-packet-a 3.4s cubic-bezier(.45,0,.2,1) infinite; }
  .network-packet.packet-b { animation: network-packet-b 3.4s cubic-bezier(.45,0,.2,1) infinite; }
  .network-node { animation: network-node 2.6s ease-in-out infinite alternate; }
  .network-node.node-b { animation-delay: -1.3s; }
  .network-proof { animation: network-proof 4.2s linear infinite; }

  .product-row:hover .world-orbit.orbit-a,
  .product-row:hover .world-orbit.orbit-b,
  .product-row:hover .network-proof { animation-duration: 3.8s; }
  .product-row:hover .decision-path,
  .product-row:hover .execution-packet,
  .product-row:hover .network-packet { animation-duration: 1.8s; }
}

@keyframes world-orbit-a { to { transform: rotate(342deg); } }
@keyframes world-orbit-b { to { transform: rotate(386deg); } }
@keyframes world-core { 0%, 58%, 100% { transform: rotate(45deg) scale(1); } 72% { transform: rotate(45deg) scale(1.42); } }
@keyframes world-node { from { opacity: .45; transform: scale(.72); } to { opacity: 1; transform: scale(1.18); } }
@keyframes world-pulse { 0% { opacity: .65; transform: scale(.25); } 68%, 100% { opacity: 0; transform: scale(3.3); } }
@keyframes decision-path { 0%, 12% { opacity: .15; transform: rotate(var(--angle)) scaleX(.08); } 48%, 78% { opacity: 1; transform: rotate(var(--angle)) scaleX(1); } 100% { opacity: .18; transform: rotate(var(--angle)) scaleX(.1); } }
@keyframes decision-source { from { border-color: #555a5c; transform: scale(.8); } to { border-color: var(--orange); transform: scale(1.12); } }
@keyframes decision-choice { 0%, 46% { transform: rotate(45deg) scale(.78); } 62%, 86% { transform: rotate(45deg) scale(1.12); } 100% { transform: rotate(45deg) scale(.78); } }
@keyframes decision-scan { 0% { opacity: 0; transform: translateX(0); } 18% { opacity: .85; } 72% { opacity: .85; } 100% { opacity: 0; transform: translateX(clamp(130px, 14vw, 260px)); } }
@keyframes execution-packet { 0%, 8% { opacity: 0; transform: translateX(0); } 18% { opacity: 1; } 72%, 88% { opacity: 1; transform: translateX(var(--travel)); } 100% { opacity: 0; transform: translateX(var(--travel)); } }
@keyframes execution-reject { 0%, 12% { opacity: 0; transform: translateX(0); } 24% { opacity: 1; } 62% { opacity: 1; transform: translateX(var(--reject-travel)); } 72% { opacity: .2; transform: translateX(calc(var(--reject-travel) - 8px)); } 100% { opacity: 0; transform: translateX(calc(var(--reject-travel) - 8px)); } }
@keyframes execution-result { 0%, 45% { opacity: .18; transform: scale(.72); } 60%, 82% { opacity: 1; transform: scale(1.12); } 100% { opacity: .18; transform: scale(.72); } }
@keyframes execution-gate { 0%, 35%, 100% { opacity: .35; transform: scaleY(.55); } 48%, 78% { opacity: 1; transform: scaleY(1); } }
@keyframes execution-scan { 0% { opacity: 0; transform: translateX(0); } 18%, 72% { opacity: .7; } 100% { opacity: 0; transform: translateX(clamp(150px, 17vw, 300px)); } }
@keyframes network-packet-a { 0% { opacity: 0; transform: translate(0,0); } 18% { opacity: 1; } 50% { opacity: 1; transform: translate(clamp(70px, 8vw, 138px), clamp(26px, 3vw, 48px)); } 78% { opacity: 1; transform: translate(clamp(145px, 16vw, 270px), 0); } 100% { opacity: 0; transform: translate(clamp(145px, 16vw, 270px), 0); } }
@keyframes network-packet-b { 0% { opacity: 0; transform: translate(0,0); } 18% { opacity: 1; } 52% { opacity: 1; transform: translate(clamp(-138px, -8vw, -70px), clamp(-48px, -3vw, -26px)); } 82% { opacity: 1; transform: translate(clamp(-270px, -16vw, -145px), 0); } 100% { opacity: 0; transform: translate(clamp(-270px, -16vw, -145px), 0); } }
@keyframes network-node { from { opacity: .5; transform: rotate(45deg) scale(.78); } to { opacity: 1; transform: rotate(45deg) scale(1.08); } }
@keyframes network-proof { to { transform: rotate(405deg); } }

.solutions-section { padding-bottom: 130px; background: var(--ink-soft); }
.dark-intro { color: var(--white); }
.dark-intro > p.lang-zh, .dark-intro > p.lang-en { color: #a4a7a4; }
.solutions-section .section-intro { grid-template-columns: .25fr 1.12fr .63fr; align-items: start; padding-bottom: 58px; }
.solution-grid { display: grid; grid-template-columns: 1fr 1fr; margin: 0 var(--page-pad); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.solution-grid article { min-height: 202px; display: grid; grid-template-columns: 44px minmax(0, 1fr); grid-template-rows: auto 1fr; column-gap: 20px; align-content: start; padding: 36px 38px; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.solution-grid article > span { grid-row: 1 / 3; padding-top: 7px; color: var(--orange); font: 700 12px/1 var(--font-display); }
.solution-grid h3 { max-width: 520px; margin: 0 0 18px; font: 700 clamp(28px, 2.6vw, 42px)/1.05 var(--font-display); letter-spacing: -.03em; }
.solution-grid p { max-width: 610px; margin: 0; color: #a6aaa6; font-size: 15px; line-height: 1.7; }

.process-section { padding: 130px var(--page-pad); color: var(--ink); background: var(--paper-deep); }
.process-heading { display: grid; grid-template-columns: .5fr 1.5fr; gap: 40px; margin-bottom: 90px; }
.process-heading h2 { max-width: 1040px; margin: 0; font: 720 clamp(38px, 5vw, 76px)/1.02 var(--font-display); letter-spacing: -.045em; }
.process-list { margin: 0; padding: 0; border-top: 2px solid var(--ink); list-style: none; }
.process-list li { display: grid; grid-template-columns: .23fr .55fr 1fr; gap: 36px; align-items: baseline; padding: 28px 0; border-bottom: 1px solid #aaa69c; }
.process-list li > span { color: var(--orange-dark); font: 700 12px/1 var(--font-display); }
.process-list strong { font: 680 clamp(20px, 2vw, 30px)/1.1 var(--font-display); }
.process-list p { margin: 0; color: #555854; font-size: 15px; line-height: 1.65; }

.trust-section { display: grid; grid-template-columns: .9fr 1.1fr; gap: 8vw; padding: 130px var(--page-pad); background: var(--ink); }
.trust-copy h2 { max-width: 650px; margin: 38px 0 0; font: 720 clamp(38px, 4.5vw, 70px)/1.02 var(--font-display); letter-spacing: -.04em; }
.trust-rules { border-top: 1px solid var(--line-dark); }
.trust-rules > div { display: grid; grid-template-columns: .28fr .9fr 1fr; gap: 24px; align-items: baseline; padding: 27px 0; border-bottom: 1px solid var(--line-dark); }
.trust-rules span { color: var(--orange); font-size: 11px; }
.trust-rules strong { font-size: 17px; }
.trust-rules p { margin: 0; color: #8f9390; font-size: 13px; line-height: 1.6; }

.closing-section { position: relative; min-height: 620px; display: flex; flex-direction: column; justify-content: center; padding: 100px var(--page-pad); color: var(--ink); background: var(--orange); overflow: hidden; }
.closing-section > p { position: absolute; right: -2vw; bottom: -10vw; margin: 0; color: rgba(17,19,21,.09); font: 800 38vw/.7 var(--font-display); letter-spacing: -.08em; }
.closing-section h2 { position: relative; z-index: 1; max-width: 1200px; margin: 0; font: 760 clamp(44px, 6vw, 96px)/.98 var(--font-display); letter-spacing: -.05em; }

footer { display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 24px; min-height: 120px; padding: 30px var(--page-pad); color: #858985; background: #0b0c0d; font-size: 12px; }
.footer-brand { display: flex; align-items: center; gap: 12px; color: var(--white); font: 800 20px/1 var(--font-display); }
.footer-brand span { width: 28px; height: 2px; background: var(--orange); }

.js [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s cubic-bezier(.22,.61,.36,1); transition-delay: calc(var(--delay, 0) * 90ms); }
.js [data-reveal][data-delay="1"] { --delay: 1; }
.js [data-reveal].is-visible { opacity: 1; transform: none; }

@media (max-width: 1080px) {
  .site-header { grid-template-columns: 1fr auto; }
  .main-nav { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 160px; }
  .hero-system { max-width: 700px; }
  .section-intro { grid-template-columns: .35fr 1fr; }
  .section-intro > p.lang-zh, .section-intro > p.lang-en { grid-column: 2; }
  .product-row { grid-template-columns: .15fr .65fr 1.2fr; }
  .product-row ul { grid-column: 2 / -1; }
  .trust-section { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --page-pad: 20px; }
  .site-header { height: 72px; }
  .brand-name, .brand-line { display: none !important; }
  .hero { padding-top: 125px; padding-bottom: 64px; gap: 62px; }
  .hero-grid { top: 72px; grid-template-columns: repeat(3, 1fr); }
  .hero-grid i:nth-child(n+4) { display: none; }
  .hero h1 { font-size: clamp(44px, 12.5vw, 64px); }
  html[data-language="en"] .hero h1 { font-size: clamp(38px, 10.5vw, 54px); }
  .hero-summary { margin-top: 26px; overflow-wrap: anywhere; font-size: 16px; }
  .hero-points { align-items: flex-start; flex-direction: column; margin-top: 32px; }
  .system-head { align-items: flex-start; flex-direction: column; padding-block: 15px; }
  .system-flow { padding: 14px; }
  .statement-section { grid-template-columns: 1fr; padding-block: 82px; }
  .statement h2 { font-size: 36px; }
  .section-intro { grid-template-columns: 1fr; gap: 26px; padding-block: 82px 48px; }
  .section-intro > p.lang-zh, .section-intro > p.lang-en { grid-column: auto; }
  .product-row { grid-template-columns: 44px 1fr; gap: 22px; padding-block: 38px; }
  .product-description, .product-row ul { grid-column: 2; }
  .layer-stage { inset: 0; width: auto; height: auto; opacity: .24; mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,.12) 30%, #000 62%, #000 100%); }
  .solution-grid { grid-template-columns: 1fr; }
  .solution-grid article { min-height: 0; grid-template-columns: 36px minmax(0, 1fr); column-gap: 14px; padding: 28px 24px; }
  .solutions-section { padding-bottom: 82px; }
  .process-section { padding-block: 82px; }
  .process-heading { grid-template-columns: 1fr; margin-bottom: 56px; }
  .process-list li { grid-template-columns: 40px 1fr; gap: 16px; }
  .process-list p { grid-column: 2; }
  .trust-section { padding-block: 82px; }
  .trust-rules > div { grid-template-columns: 72px 1fr; }
  .trust-rules p { grid-column: 2; }
  .closing-section { min-height: 510px; }
  footer { grid-template-columns: 1fr; }
}

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