:root {
  --ink: #12151d;
  --muted: #677086;
  --line: rgba(107, 125, 170, .16);
  --blue: #4d79ff;
  --violet: #8a6cff;
  --cyan: #4cdde0;
  --ease-out: cubic-bezier(.22, 1, .36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html.section-snap-scroll {
  scroll-snap-type: y proximity;
}
html.section-snap-scroll .hero,
html.section-snap-scroll .features {
  scroll-snap-align: start;
  scroll-snap-stop: always;
}
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { max-width: 100%; }
main section { scroll-margin-top: 88px; }

.skip-link {
  position: fixed;
  z-index: 1000;
  left: 16px;
  top: 16px;
  transform: translateY(-150%);
  padding: 10px 16px;
  border-radius: 10px;
  background: #111827;
  color: #fff;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  z-index: 100;
  top: 18px;
  left: 0;
  width: 100%;
  padding: 0 24px;
  transition: top .35s var(--ease-out);
}
.nav-shell {
  width: min(1376px, calc(100vw - 48px));
  min-height: 66px;
  margin: 0 auto;
  padding: 8px 10px 8px 24px;
  display: flex;
  align-items: center;
  border: 1px solid rgba(255, 255, 255, .76);
  border-radius: 22px;
  background: rgba(255, 255, 255, .82);
  box-shadow: 0 18px 55px rgba(44, 61, 109, .09);
  backdrop-filter: blur(22px) saturate(150%);
  -webkit-backdrop-filter: blur(22px) saturate(150%);
  transition: min-height .35s var(--ease-out), width .35s var(--ease-out), box-shadow .35s ease;
}
.site-header.is-scrolled { top: 10px; }
.site-header.is-scrolled .nav-shell {
  width: min(1240px, calc(100vw - 36px));
  min-height: 58px;
  box-shadow: 0 16px 45px rgba(39, 54, 96, .14);
}
.brand { flex: 0 0 auto; display: flex; align-items: center; }
.brand img { display: block; width: 112px; height: auto; }
.nav-menu { flex: 1; display: flex; align-items: center; justify-content: space-between; margin-left: 44px; }
.nav-links, .nav-actions { display: flex; align-items: center; gap: 8px; }
.nav-links > a, .nav-dropdown > button, .nav-text {
  min-height: 42px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: #383e4d;
  font-size: 15px;
  cursor: pointer;
  transition: color .2s ease, background .2s ease;
}
.nav-links > a:hover, .nav-dropdown > button:hover, .nav-text:hover,
.nav-links > a.is-active { color: #355ff5; background: rgba(76, 116, 255, .08); }
.nav-dropdown { position: relative; }
.nav-dropdown button span { margin-left: 6px; transition: transform .25s ease; }
.nav-dropdown.is-open button span { transform: rotate(180deg); }
.dropdown-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  width: 300px;
  padding: 10px;
  border: 1px solid rgba(109, 127, 173, .16);
  border-radius: 18px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 24px 65px rgba(37, 51, 89, .16);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(.98);
  transform-origin: top left;
  transition: .24s var(--ease-out);
}
.nav-dropdown.is-open .dropdown-panel { opacity: 1; visibility: visible; transform: none; }
.dropdown-panel a { display: flex; flex-direction: column; gap: 3px; padding: 12px; border-radius: 12px; }
.dropdown-panel a:hover { background: #f4f7ff; }
.dropdown-panel strong { font-size: 14px; }
.dropdown-panel span { color: #7d8596; font-size: 12px; }
.nav-primary {
  min-height: 46px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border-radius: 15px;
  color: #fff;
  background: #10131a;
  font-size: 15px;
  box-shadow: 0 9px 20px rgba(23, 27, 38, .15);
  transition: transform .25s var(--ease-out), box-shadow .25s ease;
}
.nav-primary:hover { transform: translateY(-2px); box-shadow: 0 13px 28px rgba(23, 27, 38, .22); }
.menu-toggle { display: none; }

.hero {
  position: relative;
  min-height: 1000px;
  padding: 145px 24px 80px;
  overflow: hidden;
  isolation: isolate;
  background: #eaf0ff url("assets/hero-bg.webp") center top / cover no-repeat;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 20% 20%, rgba(123, 96, 255, .20), transparent 25%),
    radial-gradient(circle at 85% 75%, rgba(59, 224, 235, .22), transparent 28%);
}
.hero-aurora {
  position: absolute;
  z-index: -1;
  inset: -20%;
  opacity: .7;
  background: conic-gradient(from 170deg at 50% 50%, transparent, rgba(109, 91, 255, .14), transparent 28%, rgba(72, 221, 224, .16), transparent 55%);
  filter: blur(80px);
  animation: aurora-drift 16s ease-in-out infinite alternate;
}
.hero-copy { position: relative; z-index: 8; max-width: 860px; margin: 0 auto; text-align: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 22px;
  color: rgba(255, 255, 255, .82);
  font-size: 14px;
  letter-spacing: .08em;
}
.eyebrow span { width: 7px; height: 7px; border-radius: 50%; background: #79f0df; box-shadow: 0 0 0 6px rgba(121, 240, 223, .14); }
h1 { margin: 0; color: #fff; font-size: clamp(52px, 5vw, 82px); line-height: 1.08; letter-spacing: -.045em; text-shadow: 0 10px 34px rgba(40, 51, 120, .14); }
.title-line { display: block; opacity: 0; transform: translateY(48px); animation: title-in .95s var(--ease-out) forwards; }
.title-line:nth-child(2) { animation-delay: .14s; }
.title-line img { width: .82em; height: .66em; margin: 0 .03em; vertical-align: .02em; filter: drop-shadow(0 10px 22px rgba(42, 64, 155, .22)); animation: title-icon 1.3s .7s var(--ease-out) both; }
.hero-subtitle { max-width: 660px; margin: 24px auto 0; color: rgba(255, 255, 255, .78); font-size: 17px; line-height: 1.8; }
.hero-actions { margin-top: 28px; display: flex; justify-content: center; gap: 12px; }
.hero-reveal { opacity: 0; transform: translateY(22px); animation: reveal-in .8s .45s var(--ease-out) forwards; }
.hero-actions.hero-reveal { animation-delay: .58s; }
.button { min-width: 128px; height: 48px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; border-radius: 14px; font-size: 15px; transition: transform .25s var(--ease-out), box-shadow .25s ease, background .25s ease; }
.button:hover { transform: translateY(-3px); }
.button-dark { color: #fff; background: #10131a; box-shadow: 0 12px 30px rgba(15, 22, 45, .22); }
.button-light { color: #242b3c; background: rgba(255, 255, 255, .82); box-shadow: inset 0 0 0 1px rgba(255,255,255,.84); backdrop-filter: blur(10px); }

.hero-stage { position: relative; width: min(1160px, 92vw); height: 560px; margin: 28px auto 0; perspective: 1500px; }
.hero-glow { position: absolute; left: 50%; bottom: 5%; width: 72%; height: 60%; transform: translateX(-50%); border-radius: 50%; background: rgba(255,255,255,.45); filter: blur(70px); }
.product-frame {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: -46px;
  width: min(980px, 80vw);
  transform: translate(-50%, 100px) rotateX(5deg) scale(.94);
  transform-style: preserve-3d;
  opacity: 0;
  animation: product-rise 1.15s .42s var(--ease-out) forwards;
  will-change: transform;
}
.product-frame img { display: block; width: 100%; filter: drop-shadow(0 40px 45px rgba(46, 69, 150, .22)); }
.frame-shine { position: absolute; z-index: 2; inset: 4% 3% 10%; overflow: hidden; border-radius: 18px; pointer-events: none; }
.frame-shine::after { content: ""; position: absolute; top: -20%; left: -40%; width: 18%; height: 150%; background: linear-gradient(90deg, transparent, rgba(255,255,255,.5), transparent); transform: rotate(12deg); animation: shine 5.5s 1.6s ease-in-out infinite; }
.float-card { position: absolute; z-index: 6; width: 182px; opacity: 0; filter: drop-shadow(0 22px 26px rgba(43, 61, 136, .16)); }
.float-card-left { left: -1%; top: 35px; animation: card-left-in .9s .62s var(--ease-out) forwards, float-left 6s 1.6s ease-in-out infinite; }
.float-card-right { right: -1%; top: 18px; animation: card-right-in .9s .7s var(--ease-out) forwards, float-right 6.7s 1.7s ease-in-out infinite; }
.micro-card { position: absolute; z-index: 7; opacity: 0; filter: drop-shadow(0 12px 22px rgba(65, 72, 135, .18)); }
.micro-card-left { width: 190px; left: 5%; top: 285px; animation: pop-in .7s .96s var(--ease-out) forwards; }
.micro-card-right { width: 155px; right: 3%; top: 300px; animation: pop-in .7s 1.06s var(--ease-out) forwards; }
.hero-path { position: absolute; z-index: 0; opacity: .74; pointer-events: none; }
.hero-path-left { left: -90px; top: 360px; width: 34vw; }
.hero-path-right { right: -20px; top: 230px; width: 48vw; }
.scroll-cue { position: absolute; z-index: 10; left: 50%; bottom: 20px; display: flex; flex-direction: column; align-items: center; gap: 8px; transform: translateX(-50%); color: rgba(46, 58, 104, .62); font-size: 12px; letter-spacing: .12em; }
.scroll-cue span { width: 1px; height: 34px; background: linear-gradient(to bottom, rgba(74,91,153,0), rgba(74,91,153,.8)); animation: cue 1.8s ease-in-out infinite; }

.section-grid {
  position: relative;
  background-image: linear-gradient(rgba(83, 105, 160, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(83, 105, 160, .07) 1px, transparent 1px);
  background-size: 25% 100%, 25% 100%;
  background-position: center;
}
.section-heading { width: min(900px, calc(100% - 40px)); margin: 0 auto; text-align: center; }
.section-kicker { margin: 0 0 16px; color: #5274ff; font-size: 13px; font-weight: 700; letter-spacing: .16em; }
.section-heading h2 { margin: 0; font-size: clamp(38px, 4.3vw, 64px); line-height: 1.15; letter-spacing: -.048em; }
.section-heading > p:last-child { max-width: 670px; margin: 20px auto 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.stroke-word { position: relative; white-space: nowrap; }
.stroke-word::after { content: ""; position: absolute; z-index: -1; left: -3%; right: -5%; bottom: -.12em; height: .36em; background: url("assets/teal-stroke.png") center / 100% 100% no-repeat; transform: rotate(-2deg); }
.reveal { opacity: 0; transform: translateY(32px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); transition-delay: var(--delay, 0ms); }
.reveal.is-visible { opacity: 1; transform: none; }

.features { padding: 136px 24px 148px; background-color: #fff; }
.feature-grid { width: min(1368px, 100%); margin: 74px auto 0; display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); border-radius: 28px; overflow: hidden; background: rgba(255,255,255,.88); box-shadow: 0 24px 80px rgba(37, 52, 92, .06); }
.feature-card { min-height: 520px; position: relative; display: flex; flex-direction: column; overflow: hidden; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.72); transition: background .35s ease, box-shadow .35s ease; }
.feature-card:nth-child(2n) { border-right: 0; }
.feature-card:nth-last-child(-n+2) { border-bottom: 0; }
.feature-card:hover { z-index: 2; background: #fff; box-shadow: 0 25px 65px rgba(60, 83, 148, .12); }
.feature-copy { padding: 38px 42px 12px; }
.feature-number { display: inline-flex; width: 36px; height: 24px; align-items: center; justify-content: center; border-radius: 99px; color: #5578ff; background: #eef2ff; font-size: 12px; font-weight: 700; }
.feature-copy h3 { margin: 18px 0 10px; font-size: 24px; letter-spacing: -.025em; }
.feature-copy p { max-width: 490px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.7; }
.feature-visual { flex: 1; min-height: 310px; display: flex; align-items: flex-end; overflow: hidden; }
.feature-visual img { width: 100%; height: 100%; object-fit: cover; object-position: center top; transition: transform .6s var(--ease-out), filter .6s ease; }
.feature-card:hover .feature-visual img { transform: scale(1.025) translateY(-4px); filter: saturate(1.06); }

.workflow { padding: 140px 24px; background: #f7f8fb; }
.workflow-list { width: min(1368px, 100%); margin: 76px auto 0; display: grid; gap: 24px; }
.workflow-row { min-height: 560px; display: grid; grid-template-columns: 39% 61%; overflow: hidden; border: 1px solid rgba(97, 116, 166, .12); border-radius: 30px; background: #fff; box-shadow: 0 20px 65px rgba(45, 58, 90, .055); }
.workflow-copy { padding: 76px 72px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.pill { padding: 7px 13px; border: 1px solid #e3e7f2; border-radius: 999px; color: #7a8292; background: #fafbfc; font-size: 12px; }
.workflow-copy h3 { margin: 24px 0 16px; font-size: clamp(32px, 3.1vw, 46px); line-height: 1.13; letter-spacing: -.045em; }
.workflow-copy p { max-width: 430px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.75; }
.text-link { margin-top: 30px; display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 650; }
.text-link span { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 50%; color: #fff; background: #151922; transition: transform .25s var(--ease-out); }
.text-link:hover span { transform: translate(3px, -3px); }
.workflow-visual { position: relative; overflow: hidden; display: grid; place-items: center; transform-style: preserve-3d; transition: transform .35s ease; }
.workflow-visual::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,.28), transparent 38%); pointer-events: none; }
.workflow-visual img { position: relative; z-index: 2; width: 100%; height: 100%; object-fit: cover; transform: translateZ(20px); transition: transform .7s var(--ease-out); }
.workflow-row:hover .workflow-visual img { transform: translateZ(20px) scale(1.03); }
.visual-blue { background: url("assets/workflow-bg-blue.png") center / cover; }
.visual-violet { background: url("assets/workflow-bg-violet.png") center / cover; }
.visual-green { background: url("assets/workflow-bg-green.png") center / cover; }
.visual-orb { position: absolute; z-index: 1; width: 48%; aspect-ratio: 1; border-radius: 50%; background: rgba(255,255,255,.22); filter: blur(35px); animation: orb-drift 8s ease-in-out infinite alternate; }

.resources { position: relative; padding: 0 0 108px; overflow: hidden; background: #fff; }
.resource-word-panel {
  position: relative;
  width: min(1368px, 86vw);
  aspect-ratio: 1368 / 320;
  margin: 0 auto;
  display: grid;
  place-items: center;
  border-right: 1px solid #dde0e7;
  border-left: 1px solid #dde0e7;
  background: #fff;
}
.resource-word-panel::before,
.resource-word-panel::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 100vw;
  height: 1px;
  background: #dde0e7;
  transform: translateX(-50%);
  pointer-events: none;
}
.resource-word-panel::before { top: 0; }
.resource-word-panel::after { bottom: 0; }
.resource-word-panel img {
  width: 89.4737%;
  height: auto;
  display: block;
}
@media (max-width: 900px) {
  .resource-word-panel { width: 100%; }
}
.resource-word { width: max-content; margin: 0 auto -10px; font-size: clamp(110px, 16vw, 290px); font-weight: 850; line-height: .9; letter-spacing: -.075em; color: transparent; background: linear-gradient(90deg, #fc264b 5%, #ff2e83 44%, #bd67ff 88%); -webkit-background-clip: text; background-clip: text; opacity: .92; user-select: none; }
.resource-heading { position: relative; z-index: 2; padding: 118px 0 62px; }
.resource-wall { display: grid; gap: 22px; transform: rotate(-.35deg) scale(1.015); }
.marquee-row { width: 100%; overflow: hidden; padding: 4px 0; }
.marquee-track { width: max-content; display: flex; gap: 22px; animation: marquee-left 32s linear infinite; will-change: transform; }
.marquee-row img { display: block; width: max(1100px, 86vw); height: auto; border-radius: 13px; box-shadow: 0 18px 45px rgba(35, 44, 70, .08); transition: filter .35s ease, transform .35s var(--ease-out); }
.marquee-row:hover .marquee-track { animation-play-state: paused; }
.marquee-row:hover img { filter: saturate(1.08) contrast(1.02); transform: translateY(-3px); }
.marquee-right .marquee-track { animation-name: marquee-right; animation-duration: 36s; }
.marquee-row.slow .marquee-track { animation-duration: 42s; }
.resource-caption { margin: 46px auto 0; text-align: center; color: #747c8f; font-size: 14px; }
.resource-caption span { margin-right: 10px; padding: 6px 11px; border-radius: 99px; color: #6e48f5; background: #f0ebff; font-weight: 650; }

.security { padding: 142px 24px 148px; background-color: #fff; }
.security-grid { width: min(1368px, 100%); margin: 72px auto 0; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); border-radius: 26px; overflow: hidden; background: rgba(255,255,255,.82); }
.security-card { min-width: 0; border-right: 1px solid var(--line); background: rgba(255,255,255,.68); transition: background .35s ease, transform .35s var(--ease-out); }
.security-card:last-child { border-right: 0; }
.security-card:hover { z-index: 1; background: #fff; box-shadow: 0 22px 60px rgba(50, 64, 105, .10); }
.security-visual { height: 310px; overflow: hidden; }
.security-visual img { width: 100%; height: 100%; object-fit: cover; transition: transform .65s var(--ease-out); }
.security-card:hover .security-visual img { transform: scale(1.035); }
.security-copy { padding: 30px 32px 38px; }
.security-copy span { color: #7b93ff; font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.security-copy h3 { margin: 14px 0 10px; font-size: 22px; }
.security-copy p { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.7; }

.closing { position: relative; min-height: 610px; padding: 150px 24px; overflow: hidden; display: grid; place-items: center; text-align: center; background: #eef4ff url("assets/cta-bg.png") center / cover no-repeat; }
.closing-glow { position: absolute; width: 700px; height: 440px; border-radius: 50%; background: rgba(255,255,255,.72); filter: blur(55px); animation: closing-glow 8s ease-in-out infinite alternate; }
.closing-content { position: relative; z-index: 2; }
.closing h2 { margin: 0; font-size: clamp(42px, 5.2vw, 72px); letter-spacing: -.052em; }
.closing p:not(.section-kicker) { margin: 20px auto 0; color: #687287; font-size: 17px; }
.closing-actions { margin-top: 34px; display: flex; justify-content: center; gap: 12px; }
.button-ghost { color: #222938; border: 1px solid rgba(66, 80, 118, .14); background: rgba(255,255,255,.68); backdrop-filter: blur(10px); }
.shine-button { position: relative; overflow: hidden; }
.shine-button::after { content: ""; position: absolute; top: -30%; left: -50%; width: 28%; height: 160%; background: linear-gradient(90deg, transparent, rgba(255,255,255,.45), transparent); transform: rotate(15deg); transition: left .55s var(--ease-out); }
.shine-button:hover::after { left: 125%; }

.footer { padding: 56px max(24px, calc((100vw - 1368px) / 2)); background: #fff; }
.footer-main { display: grid; grid-template-columns: 220px 1fr auto; align-items: center; gap: 32px; }
.footer-brand img { width: 120px; }
.footer-main p { margin: 0; color: #7c8494; font-size: 14px; }
.footer-links { display: flex; gap: 24px; color: #575f70; font-size: 14px; }
.footer-links a:hover { color: #4e72ff; }
.footer-bottom { margin-top: 42px; padding-top: 22px; display: flex; justify-content: space-between; border-top: 1px solid #edf0f5; color: #a0a6b2; font-size: 12px; }

@keyframes title-in { to { opacity: 1; transform: none; } }
@keyframes reveal-in { to { opacity: 1; transform: none; } }
@keyframes title-icon { 0% { transform: rotateY(-80deg) scale(.85); } 100% { transform: none; } }
@keyframes product-rise { to { opacity: 1; transform: translate(-50%, 0) rotateX(0) scale(1); } }
@keyframes card-left-in { from { opacity: 0; transform: translate(-70px, 30px) rotate(-16deg) scale(.82); } to { opacity: 1; transform: rotate(-7deg); } }
@keyframes card-right-in { from { opacity: 0; transform: translate(70px, 30px) rotate(16deg) scale(.82); } to { opacity: 1; transform: rotate(7deg); } }
@keyframes pop-in { from { opacity: 0; transform: translateY(18px) scale(.78); } to { opacity: 1; transform: none; } }
@keyframes float-left { 0%,100% { transform: rotate(-7deg) translateY(0); } 50% { transform: rotate(-5deg) translateY(-13px); } }
@keyframes float-right { 0%,100% { transform: rotate(7deg) translateY(0); } 50% { transform: rotate(5deg) translateY(-16px); } }
@keyframes aurora-drift { to { transform: translate3d(5%, -3%, 0) rotate(12deg); } }
@keyframes shine { 0%,62% { left: -40%; } 82%,100% { left: 125%; } }
@keyframes cue { 0%,100% { transform: scaleY(.35); transform-origin: top; opacity: .35; } 50% { transform: scaleY(1); opacity: 1; } }
@keyframes orb-drift { from { transform: translate(-28%, 18%) scale(.8); } to { transform: translate(36%, -14%) scale(1.15); } }
@keyframes marquee-left { to { transform: translateX(calc(-50% - 11px)); } }
@keyframes marquee-right { from { transform: translateX(calc(-50% - 11px)); } to { transform: translateX(0); } }
@keyframes closing-glow { from { transform: translate(-22%, 4%) scale(.9); } to { transform: translate(24%, -5%) scale(1.12); } }

@media (max-width: 900px) {
  .site-header { top: 10px; padding: 0 12px; }
  .nav-shell { width: 100%; min-height: 58px; padding: 7px 9px 7px 16px; border-radius: 18px; }
  .brand img { width: 96px; }
  .menu-toggle { position: relative; z-index: 2; margin-left: auto; width: 43px; height: 43px; display: grid; place-content: center; gap: 6px; border: 0; border-radius: 13px; background: #11151d; }
  .menu-toggle span { width: 19px; height: 1.5px; background: #fff; transition: .25s ease; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.7px) rotate(-45deg); }
  .nav-menu { position: absolute; top: calc(100% + 10px); left: 12px; right: 12px; margin: 0; padding: 16px; display: block; border: 1px solid var(--line); border-radius: 20px; background: rgba(255,255,255,.97); box-shadow: 0 24px 60px rgba(30, 45, 86, .16); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: .25s var(--ease-out); }
  .nav-menu.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav-links, .nav-actions { display: grid; gap: 4px; }
  .nav-links > a, .nav-dropdown > button, .nav-text { width: 100%; justify-content: space-between; min-height: 46px; }
  .dropdown-panel { position: static; width: 100%; max-height: 0; padding: 0 8px; overflow: hidden; border: 0; box-shadow: none; opacity: 1; visibility: visible; transform: none; transition: max-height .3s ease, padding .3s ease; }
  .nav-dropdown.is-open .dropdown-panel { max-height: 240px; padding: 6px 8px; }
  .nav-actions { margin-top: 10px; grid-template-columns: 1fr 1fr; }
  .nav-primary { justify-content: center; }
  .hero { min-height: 920px; padding-top: 130px; }
  h1 { font-size: clamp(43px, 10vw, 64px); }
  .hero-stage { width: 100%; height: 490px; }
  .product-frame { width: min(900px, 96vw); bottom: 20px; }
  .float-card { width: 132px; }
  .float-card-left { left: -5%; top: 42px; }
  .float-card-right { right: -5%; top: 34px; }
  .micro-card-left { width: 150px; left: -5%; top: 245px; }
  .micro-card-right { width: 126px; right: -3%; top: 250px; }
  .features, .workflow, .security { padding-left: 16px; padding-right: 16px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 480px; border-right: 0; }
  .feature-card:nth-last-child(-n+2) { border-bottom: 1px solid var(--line); }
  .feature-card:last-child { border-bottom: 0; }
  .workflow-row { grid-template-columns: 1fr; }
  .workflow-copy { padding: 54px 48px; }
  .workflow-visual { min-height: 470px; }
  .security-grid { grid-template-columns: 1fr; }
  .security-card { border-right: 0; border-bottom: 1px solid var(--line); }
  .security-card:last-child { border-bottom: 0; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; }
}

@media (max-width: 560px) {
  .hero { min-height: 800px; padding: 116px 16px 50px; }
  .eyebrow { font-size: 12px; }
  h1 { font-size: 42px; }
  .hero-subtitle { font-size: 15px; line-height: 1.7; }
  .hero-actions { margin-top: 22px; }
  .button { min-width: 0; flex: 1; }
  .hero-stage { height: 360px; margin-top: 42px; }
  .product-frame { width: 150vw; bottom: 8px; }
  .float-card { width: 102px; }
  .float-card-left { left: -8%; top: -5px; }
  .float-card-right { right: -8%; top: 8px; }
  .micro-card-left { width: 126px; left: -12%; top: 156px; }
  .micro-card-right { width: 105px; right: -10%; top: 165px; }
  .hero-path { display: none; }
  .scroll-cue { display: none; }
  .features, .workflow, .security { padding-top: 96px; padding-bottom: 100px; }
  .section-heading h2 { font-size: 37px; }
  .section-heading > p:last-child { font-size: 15px; }
  .feature-grid, .workflow-list, .security-grid { margin-top: 48px; border-radius: 20px; }
  .feature-card { min-height: 410px; }
  .feature-copy { padding: 28px 24px 8px; }
  .feature-copy h3 { font-size: 21px; }
  .feature-visual { min-height: 260px; }
  .workflow-row { min-height: 0; border-radius: 20px; }
  .workflow-copy { padding: 42px 26px; }
  .workflow-copy h3 { font-size: 33px; }
  .workflow-visual { min-height: 340px; }
  .resource-word { margin-left: -8px; font-size: 27vw; }
  .resource-heading { padding: 82px 0 44px; }
  .resource-wall { gap: 12px; }
  .marquee-track { gap: 12px; animation-duration: 40s; }
  .marquee-row img { width: 1030px; border-radius: 8px; }
  .security-visual { height: 270px; }
  .closing { min-height: 540px; padding: 110px 20px; }
  .closing h2 { font-size: 43px; }
  .closing-actions { flex-direction: column; }
  .footer { padding: 44px 20px; }
  .footer-bottom { flex-direction: column; gap: 8px; }
}

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

/* 1920 × 1080 首屏：严格使用设计稿坐标，整体随视口等比缩放。 */
.site-header {
  top: 28px;
  padding: 0;
  opacity: 0;
  transform: translateY(-18px);
  animation: exact-nav-in .72s .08s var(--ease-out) forwards;
  transition: top .52s var(--ease-out), transform .52s var(--ease-out);
}
.site-header::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  height: 56px;
  box-sizing: border-box;
  border-bottom: 1px solid rgba(0, 0, 0, .06);
  pointer-events: none;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  transition: opacity .42s ease;
}
.nav-shell {
  width: min(1000px, calc(100vw - 48px));
  min-height: 56px;
  padding: 0 8px;
  border: 0;
  border-bottom: 1px solid transparent;
  border-radius: 32px;
  background: #fff;
  box-shadow: 0 8px 30px rgba(51, 67, 118, .08);
  backdrop-filter: blur(0) saturate(100%);
  -webkit-backdrop-filter: blur(0) saturate(100%);
  will-change: width, padding, border-radius, background-color, backdrop-filter;
  transition:
    width .56s var(--ease-out),
    padding .56s var(--ease-out),
    border-radius .46s var(--ease-out),
    border-bottom-color .36s ease,
    background-color .4s ease,
    box-shadow .46s ease,
    backdrop-filter .46s var(--ease-out),
    -webkit-backdrop-filter .46s var(--ease-out);
}
.site-header.is-docked { top: 0; transform: none; }
.site-header.is-docked::before { opacity: 1; }
.site-header.is-docked .nav-shell {
  width: 100%;
  min-height: 56px;
  padding: 0 32px;
  border: 0;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.site-header.is-docked .brand { padding-left: 0; }
.brand {
  width: 156px;
  padding: 0 8px 0 16px;
  transition: padding .56s var(--ease-out);
}
.brand img { width: 118px; }
.nav-menu { min-width: 0; margin-left: 0; }
.nav-links {
  flex: 1 1 auto;
  justify-content: center;
  gap: 0;
}
.nav-actions {
  flex: 0 0 auto;
  gap: 8px;
}
.nav-links > a,
.nav-text {
  min-height: 34px;
  padding: 0 16px;
  border-radius: 8px;
  color: #282d38;
  font-size: 14px;
}
.nav-text {
  flex: 0 0 72px;
  width: 72px;
  height: 40px;
  min-height: 40px;
  padding: 0;
  justify-content: center;
  border-radius: 999px;
  background: #f2f3f5;
  transition: background-color .2s ease;
}
.nav-links > a:hover,
.nav-text:hover,
.nav-links > a.is-active { color: #282d38; background: transparent; }
.nav-text:hover {
  transform: none;
  background: #e7e9ed;
  box-shadow: none;
}
.nav-chevron {
  width: 7px;
  height: 7px;
  margin: -3px 0 0 9px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
}
.nav-primary {
  flex: 0 0 106px;
  width: 106px;
  height: 40px;
  min-height: 40px;
  padding: 0;
  justify-content: center;
  border-radius: 999px;
  font-size: 14px;
  box-shadow: none;
  transition: background-color .2s ease;
}
.nav-primary:hover {
  transform: none;
  background: #2b2d32;
  box-shadow: none;
}

.hero {
  width: 100%;
  height: 100vh;
  height: 100svh;
  min-height: 0;
  padding: 0;
  overflow: hidden;
  background: #8ea9f8 url("assets/hero-bg.webp") center / cover no-repeat;
}
.hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: -18%;
  pointer-events: none;
  background:
    radial-gradient(circle at 24% 38%, rgba(127, 112, 255, .2), transparent 34%),
    radial-gradient(circle at 78% 58%, rgba(80, 229, 235, .18), transparent 32%);
  filter: blur(34px);
  opacity: .72;
  animation: hero-ambient-drift 15s ease-in-out infinite alternate;
}
.hero::before,
.hero-aurora,
.hero-glow,
.scroll-cue { display: none; }
.hero-canvas {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: 1920px;
  height: 1080px;
  overflow: visible;
  transform: translate(-50%, -50%) scale(var(--hero-scale, 1));
  transform-origin: center;
  background: none;
}
.hero-copy {
  position: absolute;
  z-index: 8;
  top: 188px;
  left: 50%;
  width: 900px;
  max-width: none;
  margin: 0;
  transform: translateX(-50%);
}
.hero h1 {
  font-size: 56px;
  line-height: 1.18;
  letter-spacing: -.025em;
  text-shadow: none;
}
.title-line { transform: translateY(34px); animation: exact-title-in .88s 1.05s var(--ease-out) forwards; }
.title-line:nth-child(2) { animation-delay: 1.16s; }
.title-line:first-child {
  display: flex;
  align-items: center;
  justify-content: center;
}
.title-detail-icon-wrap {
  position: relative;
  top: 2px;
  display: inline-flex;
  flex: 0 0 auto;
  width: 96px;
  height: 70px;
  margin: 0 -1px;
  filter: drop-shadow(0 10px 18px rgba(65, 79, 153, .16));
  animation: exact-icon-in 1s 1.38s var(--ease-out) both;
  transform-origin: center;
}
.title-detail-icon-wrap img {
  position: static;
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  filter: none;
  animation: none;
  transform-origin: center;
  cursor: default;
}
.title-detail-icon-wrap:hover img {
  animation: title-detail-shake .34s ease-in-out 1;
}
.title-detail-icon.is-auto-shaking {
  animation: title-detail-shake .34s ease-in-out 1;
}
.hero-subtitle {
  max-width: none;
  margin: 18px auto 0;
  color: rgba(255, 255, 255, .86);
  font-size: var(--hero-subtitle-font-size, 14px);
  line-height: 1.48;
}
.hero-actions { margin-top: 40px; gap: 24px; }
.hero-reveal { transform: translateY(18px); animation: exact-copy-in .72s 1.35s var(--ease-out) forwards; }
.hero-actions.hero-reveal { animation-delay: 1.5s; }
.hero .button {
  width: var(--hero-button-width, 106px);
  min-width: var(--hero-button-width, 106px);
  height: var(--hero-button-height, 40px);
  padding: 0;
  border-radius: 999px;
  font-size: var(--hero-button-font-size, 14px);
}
.hero .button-dark {
  position: relative;
  isolation: isolate;
  overflow: visible;
  border: 0;
  background: transparent;
  box-shadow: none;
}
.hero .button-dark-surface {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  color: #fff;
  font-weight: 400;
  background: #090a0d;
  box-shadow: 0 8px 18px rgba(23, 31, 67, .18);
}

.closing-actions .button {
  font-weight: 400;
  line-height: 1;
}
.hero .button-dark::before,
.hero .button-dark::after {
  content: none;
}
.hero .button-dark:hover {
  transform: translateY(-3px);
  background: transparent;
  box-shadow: none;
}
.hero .button-ai-glow {
  position: absolute;
  z-index: 1;
  inset: -11px;
  border-radius: 999px;
  pointer-events: none;
  opacity: 0;
  transition: opacity .38s ease;
}
.hero .button-ai-clip {
  position: absolute;
  overflow: hidden;
  border-radius: inherit;
  backface-visibility: hidden;
  transform: translateZ(0);
}
.hero .button-ai-clip-soft {
  inset: 0;
  opacity: .42;
  filter: blur(10px) saturate(1.5) contrast(1.04);
}
.hero .button-ai-clip-edge {
  inset: 7px;
  opacity: 1;
  filter: blur(.55px) saturate(1.75) contrast(1.08);
}
.hero .button-ai-color {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 180%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: conic-gradient(
    #173eff 0% 15%,
    #2f68ff 24% 36%,
    #4bb7ed 44% 55%,
    #4d7dff 63% 73%,
    #7868ff 81% 89%,
    #aa6ce6 95%,
    #173eff 100%
  );
  transform: translate(-50%, -50%) rotate(0turn);
  animation: google-ai-ring-spin 4.2s linear infinite;
  will-change: transform;
}
.hero .button-ai-clip-soft .button-ai-color {
  width: 200%;
  animation-duration: 4.2s;
}
.hero .button-dark:hover .button-ai-glow {
  opacity: .94;
}
.hero .button-light { background: rgba(255, 255, 255, .88); box-shadow: none; backdrop-filter: none; }

.hero-paths {
  position: absolute;
  z-index: 1;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}
.path-dashed {
  fill: none;
  stroke: #ebf1ff;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 12 12;
  vector-effect: non-scaling-stroke;
}
.path-reveal {
  fill: none;
  stroke: #fff;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}
.path-reveal-left { animation: draw-code-path 1.4s .16s linear forwards; }
.path-reveal-right { animation: draw-code-path 1.35s .86s linear forwards; }
.path-reveal-bottom { animation: draw-code-path 1.55s 1.53s linear forwards; }
.path-top-edge {
  transform: none;
}
.product-frame {
  z-index: 4;
  top: calc(565px + var(--product-bottom-offset, 0px));
  bottom: auto;
  width: 1188px;
  opacity: 0;
  transform: translate(-50%, 82px) scale(.97);
  animation: exact-product-in 1.05s 1.72s var(--ease-out) forwards;
}
.product-frame { aspect-ratio: 1135 / 574; }
.product-base {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  filter: drop-shadow(0 28px 42px rgba(49, 68, 134, .13));
  animation: product-ambient-breathe 8s 3.2s ease-in-out infinite;
}
.product-content-clip {
  position: absolute;
  z-index: 2;
  top: 5.75%;
  left: 2.64%;
  width: 94.89%;
  height: 92.33%;
  overflow: hidden;
  border-radius: 12px 12px 0 0;
}
.product-frame .product-content {
  position: absolute;
  top: 18px;
  left: 18px;
  display: block;
  width: calc(100% - 36px);
  height: calc(100% - 36px);
  object-fit: cover;
  object-position: center center;
  filter: none;
}
.float-card { z-index: 6; filter: none; }
.float-card-left {
  top: 172px;
  left: 150px;
  width: 250px;
  opacity: 0;
  transform: rotate(-8deg);
  transform-origin: 50% 100%;
  animation:
    exact-left-card-in .92s 1.42s var(--ease-out) forwards,
    idle-card-left 7.2s 2.6s ease-in-out infinite;
  transition: transform .38s var(--ease-out), filter .38s ease;
}
.float-card-right {
  top: 320px;
  right: 40px;
  width: 248px;
  opacity: 0;
  transform: rotate(8deg);
  transform-origin: 50% 100%;
  animation:
    exact-right-card-in .92s 1.54s var(--ease-out) forwards,
    idle-card-right 8s 2.8s ease-in-out infinite;
  transition: transform .38s var(--ease-out), filter .38s ease;
}
.float-card-left:hover { transform: rotate(-13deg); filter: drop-shadow(0 22px 24px rgba(44, 70, 155, .18)); }
.float-card-right:hover { transform: rotate(13deg); filter: drop-shadow(0 22px 24px rgba(150, 112, 28, .16)); }
.micro-card {
  z-index: 7;
  filter: none;
  transform-origin: center;
  transition: transform .4s var(--ease-out), filter .4s ease;
  will-change: transform, filter;
}
.micro-card-left {
  top: 760px;
  left: 224px;
  width: 260px;
  opacity: 0;
  animation: exact-pop-in .62s 2.12s var(--ease-out) forwards;
}
.micro-card-right {
  top: 920px;
  right: 143px;
  width: 168px;
  opacity: 0;
  animation: exact-pop-in .62s 2.22s var(--ease-out) forwards;
}

@media (hover: hover) and (pointer: fine) {
  .micro-card-left:hover {
    transform: translate(6px, -6px) scale(1.03) rotate(-2deg);
    filter: drop-shadow(0 16px 24px rgba(89, 91, 210, .24));
  }
  .micro-card-right:hover {
    transform: translate(-6px, -6px) scale(1.03) rotate(2deg);
    filter:
      drop-shadow(0 14px 22px rgba(109, 88, 239, .24))
      drop-shadow(0 0 14px rgba(137, 111, 255, .18));
  }
}

@keyframes exact-nav-in { to { opacity: 1; transform: none; } }
@keyframes exact-title-in { to { opacity: 1; transform: none; } }
@keyframes exact-copy-in { to { opacity: 1; transform: none; } }
@keyframes exact-icon-in { from { opacity: 0; transform: scale(.7) rotate(-8deg); } to { opacity: 1; transform: none; } }
@keyframes exact-line-in { from { opacity: 0; clip-path: inset(0 100% 0 0); } to { opacity: 1; clip-path: inset(0); } }
@keyframes line-top-down { from { opacity: 0; clip-path: inset(0 0 100% 0); } to { opacity: 1; clip-path: inset(0); } }
@keyframes line-bottom-up { from { opacity: 0; clip-path: inset(100% 0 0 0); } to { opacity: 1; clip-path: inset(0); } }
@keyframes line-left-right { from { opacity: 0; clip-path: inset(0 100% 0 0); } to { opacity: 1; clip-path: inset(0); } }
@keyframes draw-code-path { to { stroke-dashoffset: 0; } }
@keyframes exact-product-in { to { opacity: 1; transform: translate(-50%, 0) scale(1); } }
@keyframes exact-left-card-in { from { opacity: 0; translate: -58px 26px; scale: .86; } to { opacity: 1; translate: 0 0; scale: 1; } }
@keyframes exact-right-card-in { from { opacity: 0; translate: 58px 26px; scale: .86; } to { opacity: 1; translate: 0 0; scale: 1; } }
@keyframes exact-pop-in { from { opacity: 0; translate: 0 16px; scale: .82; } to { opacity: 1; translate: 0 0; scale: 1; } }
@keyframes title-detail-shake {
  0%, 100% { transform: translateX(0) rotate(0); }
  25% { transform: translateX(-2px) rotate(-1.6deg); }
  50% { transform: translateX(2px) rotate(1.4deg); }
  75% { transform: translateX(-1px) rotate(-.8deg); }
}
@keyframes google-ai-ring-spin {
  to { transform: translate(-50%, -50%) rotate(1turn); }
}

@property --button-glow-angle {
  syntax: "<angle>";
  inherits: false;
  initial-value: 0turn;
}
@keyframes paico-button-glow {
  to { --button-glow-angle: 1turn; }
}
@keyframes hero-ambient-drift {
  0% { transform: translate3d(-2.5%, -1%, 0) scale(1); }
  50% { transform: translate3d(2%, 1.5%, 0) scale(1.035); }
  100% { transform: translate3d(3%, -1.5%, 0) scale(1.015); }
}
@keyframes idle-card-left {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -12px; }
}
@keyframes idle-card-right {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 10px; }
}
@keyframes product-ambient-breathe {
  0%, 100% { filter: drop-shadow(0 28px 42px rgba(49, 68, 134, .13)) brightness(1); }
  50% { filter: drop-shadow(0 34px 52px rgba(68, 88, 165, .19)) brightness(1.018); }
}

@media (max-width: 900px) {
  .site-header { top: 10px; padding: 0 12px; }
  .site-header.is-docked { top: 0; padding: 0; }
  .site-header.is-docked .nav-shell { min-height: 58px; padding: 7px 12px 7px 16px; }
  .nav-shell { width: 100%; min-height: 58px; padding: 7px 9px 7px 16px; border-radius: 18px; }
  .brand { width: auto; padding: 0; }
  .brand img { width: 96px; }
  .nav-text, .nav-primary { width: 100%; min-height: 46px; }
  .nav-primary { flex-basis: auto; }
  .hero-canvas { transform: translate(-50%, -50%) scale(var(--hero-scale, .54)); }
}

@media (prefers-reduced-motion: reduce) {
  .micro-card:hover {
    transform: none !important;
    filter: none !important;
  }
}

/* 第二屏：严格按照 1920 设计稿的标题区、斜线边栏与错位四宫格搭建。 */
.features {
  position: relative;
  padding: 0;
  overflow: hidden;
  background: #fff;
  border-bottom: 0;
}
.feature-heading {
  width: min(900px, calc(100% - 40px));
  height: min(294px, 17.1930vw);
  margin: 0 auto;
  padding-top: min(108px, 6.3158vw);
  display: block;
  text-align: center;
}
.feature-heading h2 {
  position: relative;
  z-index: 0;
  isolation: isolate;
  margin: 0;
  color: #282b31;
  font-size: min(44px, 2.5731vw);
  font-weight: 650;
  line-height: 1.18;
  letter-spacing: -.045em;
}
.feature-heading > p:last-child {
  max-width: none;
  margin: min(16px, .9357vw) auto 0;
  color: #a1a6b0;
  font-size: 14px;
  line-height: 1.6;
}
.feature-stroke-word {
  position: relative;
  z-index: auto;
  display: inline-block;
  white-space: nowrap;
}
.feature-stroke-word::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: calc(50% + min(12px, .7018vw));
  top: calc(100% - min(20px, 1.1696vw));
  bottom: auto;
  width: min(240px, 14.0351vw);
  height: min(41px, 2.3977vw);
  background: url("assets/features-title-stroke.svg") center / 100% 100% no-repeat;
  transform: translateX(-50%);
  opacity: 0;
  clip-path: inset(0 20% 0 20%);
  pointer-events: none;
}

/* 第三屏：延续第二屏的 1368px 比例、标题体系与 1px 结构线。 */
.workflow {
  position: relative;
  padding: 0;
  overflow: hidden;
  background: #fff;
}
.workflow-frame {
  width: min(1368px, 86vw);
  margin: 0 auto;
  border-right: 1px solid #dde0e7;
  border-left: 1px solid #dde0e7;
}
.workflow-heading {
  position: relative;
  width: 100%;
  padding-right: 20px;
  padding-left: 20px;
}
.workflow-heading::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: #dde0e7;
  transform: translateX(-50%);
  pointer-events: none;
}
.workflow-stroke-word {
  position: relative;
  z-index: auto;
  display: inline-block;
  white-space: nowrap;
}
.workflow-stroke-word::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: 50%;
  top: calc(100% - min(33px, 1.9298vw));
  width: min(214px, 12.5146vw);
  height: min(64px, 3.7427vw);
  background: url("assets/workflow-title-stroke.svg") center / 100% 100% no-repeat;
  transform: translateX(-50%);
  clip-path: inset(0 50% 0 50%);
  pointer-events: none;
}
.workflow.is-heading-visible .workflow-stroke-word::after {
  animation: workflow-stroke-expand 650ms 720ms cubic-bezier(.22, 1, .36, 1) both;
}
@keyframes workflow-stroke-expand {
  from { clip-path: inset(0 50% 0 50%); }
  to { clip-path: inset(0); }
}
.workflow-list {
  width: 100%;
  margin: 0;
  display: block;
}
.workflow-row {
  position: relative;
  width: 100%;
  height: min(518px, 32.5731vw);
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: visible;
  border: 0;
  border-bottom: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.workflow-row::before {
  content: "";
  position: absolute;
  z-index: 3;
  top: 0;
  left: 50%;
  width: 100vw;
  height: 1px;
  background: #dde0e7;
  transform: translateX(-50%);
  pointer-events: none;
}
.workflow-row:first-child::before { display: none; }
.workflow-row::before { display: none; }
.workflow-copy {
  min-width: 0;
  padding: min(108px, 6.7836vw) min(84px, 5.2632vw);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  background: #fcfcfc;
}
.workflow-pill {
  width: min(132px, 8.2749vw);
  height: min(44px, 2.7602vw);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  color: #9096a1;
  background: url("assets/workflow-pill.svg") center / 100% 100% no-repeat;
  font-size: 14px;
  line-height: 1;
}
.workflow-copy h3 {
  margin: min(14px, .8772vw) 0 min(16px, 1.0058vw);
  color: #22252a;
  font-size: min(36px, 2.1053vw);
  font-weight: 650;
  line-height: 1.22;
  letter-spacing: -.035em;
}
.workflow-copy p {
  max-width: 500px;
  margin: 0;
  color: #989da8;
  font-size: 14px;
  line-height: 1.65;
}
.workflow-button {
  width: 118px;
  height: 44px;
  margin-top: min(42px, 2.6316vw);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: #fff;
  background: #050505;
  font-size: 14px;
  line-height: 1;
}
.workflow-button:hover { background: #2b2b2b; }
.workflow-visual-placeholder {
  min-width: 0;
  border-left: 1px solid #dde0e7;
  background: #f8f8f8;
}
.workflow-visual-demo,
.workflow-visual-data,
.workflow-visual-ai {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border-left: 1px solid #dde0e7;
  background: #6f76f4;
}
.workflow-demo-background,
.workflow-demo-svg,
.workflow-data-background,
.workflow-data-svg,
.workflow-ai-background,
.workflow-ai-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.workflow-demo-background,
.workflow-data-background,
.workflow-ai-background { object-fit: fill; }
.workflow-demo-svg,
.workflow-data-svg,
.workflow-ai-svg { border: 0; pointer-events: none; }
.workflow-divider {
  position: relative;
  z-index: 2;
  width: 100%;
  height: min(56px, 3.5205vw);
  display: block;
  object-fit: fill;
  border-top: 1px solid #dde0e7;
  border-bottom: 1px solid #dde0e7;
  background: #fff;
}
.workflow-list > .workflow-divider:last-child { border-bottom: 0; }

@media (max-width: 900px) {
  .workflow-frame { width: 100%; }
  .workflow-row { height: auto; grid-template-columns: 1fr; }
  .workflow-copy { min-height: 390px; padding: 72px 54px; }
  .workflow-visual-placeholder,
  .workflow-visual-demo,
  .workflow-visual-data,
  .workflow-visual-ai { min-height: 390px; border-top: 1px solid #dde0e7; border-left: 0; }
  .workflow-divider { height: min(56px, 4.0936vw); }
  .workflow-pill { width: 120px; height: 40px; }
  .workflow-copy h3 { margin: 14px 0 14px; font-size: 32px; }
  .workflow-copy p { font-size: 14px; }
}

@media (max-width: 560px) {
  .workflow-stroke-word::after {
    top: calc(100% - 29px);
    width: 150px;
    height: 45px;
  }
  .workflow-copy { min-height: 350px; padding: 58px 30px; }
  .workflow-visual-placeholder,
  .workflow-visual-demo,
  .workflow-visual-data,
  .workflow-visual-ai { min-height: 300px; }
  .workflow-divider { height: min(56px, 4.0936vw); }
  .workflow-pill { width: 110px; height: 37px; font-size: 12px; }
  .workflow-copy h3 { font-size: 28px; }
  .workflow-button { width: 106px; height: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  .workflow-stroke-word::after {
    clip-path: inset(0);
    animation: none !important;
  }
}

/* RESOURCE 与企业保障：延续第二、第三屏的 1368px / 86vw 结构轨道。 */
.resources {
  padding: 0;
}
.resource-content-frame,
.security-frame {
  position: relative;
  width: min(1368px, 86vw);
  margin: 0 auto;
  border-right: 1px solid #dde0e7;
  border-left: 1px solid #dde0e7;
}
.resource-content-frame {
  overflow: hidden;
}
.resource-content-frame::after,
.security-frame::after {
  content: "";
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 0;
  width: 100vw;
  height: 1px;
  background: #dde0e7;
  transform: translateX(-50%);
  pointer-events: none;
}
.resource-heading,
.security-heading {
  width: 100%;
  padding-right: 20px;
  padding-left: 20px;
}
.resource-heading {
  padding-top: 98px;
}
.resource-wall {
  width: 100%;
  padding: 0 0 72px;
  gap: 22px;
}
.marquee-row img {
  width: max(1100px, 86vw);
}

/* Paico 式资源墙：随页面滚动产生克制的横向错层，静止时不自行漂移。 */
.resource-wall {
  --resource-gap: 16px;
  gap: var(--resource-gap);
  transform: none;
  overflow: hidden;
}
.marquee-row {
  width: 100%;
  overflow: hidden;
  padding: 0;
}
.marquee-track,
.marquee-right .marquee-track,
.marquee-row.slow .marquee-track {
  width: max-content;
  display: flex;
  gap: 16px;
  animation: none;
  transform: translate3d(var(--resource-shift, 0px), 0, 0);
  will-change: transform;
}
.marquee-row img {
  display: block;
  width: clamp(780px, calc(64.5vw + 210px), 1245px);
  max-width: none;
  height: auto;
  border-radius: 0;
  box-shadow: none;
  transition: filter .3s ease, transform .3s var(--ease-out);
}
.marquee-row:hover .marquee-track { animation-play-state: running; }
.marquee-row:hover img {
  filter: saturate(1.035) contrast(1.01);
  transform: scale(1.005);
}

@media (max-width: 900px) {
  .resource-wall { --resource-gap: 12px; }
  .marquee-track,
  .marquee-right .marquee-track,
  .marquee-row.slow .marquee-track { gap: 12px; }
  .marquee-row img { width: 780px; }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-track { transform: translate3d(var(--resource-rest-shift, -8%), 0, 0); }
  .marquee-row:hover img { transform: none; }
}
.security {
  padding: 0;
  background: #fff;
}
.security-frame {
  background-color: #fff;
  background-image: radial-gradient(circle, #e8eaf0 1px, transparent 1.15px);
  background-size: 16px 16px;
}
.security-heading {
  background: rgba(255, 255, 255, .84);
}
.security-grid {
  width: 100%;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: visible;
  border: 0;
  border-top: 1px solid #dde0e7;
  border-bottom: 1px solid #dde0e7;
  border-radius: 0;
  background: rgba(255, 255, 255, .72);
}
.security-card {
  min-width: 0;
  border-right: 1px solid #dde0e7;
  background: transparent;
  box-shadow: none;
  transition: none;
}
.security-card:last-child { border-right: 0; }
.security-card:hover {
  z-index: auto;
  background: transparent;
  box-shadow: none;
}
.security-visual {
  height: min(318px, 20vw);
  min-height: 240px;
  overflow: hidden;
  background: transparent;
}
.security-copy {
  min-height: 176px;
  padding: 34px min(56px, 3.5vw) 40px;
  background: rgba(255, 255, 255, .78);
}
.security-copy h3 {
  margin: 0 0 14px;
  color: #22252a;
  font-size: 22px;
  font-weight: 650;
  line-height: 1.3;
}
.security-copy p {
  max-width: 330px;
  margin: 0;
  color: #989da8;
  font-size: 14px;
  line-height: 1.65;
}
.security-tail {
  height: 118px;
  background: rgba(255, 255, 255, .2);
}

@media (max-width: 900px) {
  .resource-content-frame,
  .security-frame { width: 100%; }
  .resource-heading { padding-top: 92px; }
  .resource-wall { padding-bottom: 56px; }
  .security-grid { grid-template-columns: 1fr; }
  .security-card {
    border-right: 0;
    border-bottom: 1px solid #dde0e7;
  }
  .security-card:last-child { border-bottom: 0; }
  .security-visual { height: 220px; min-height: 0; }
  .security-copy { min-height: 148px; padding: 30px 34px 36px; }
}

/* 资源卡片逐张裁切，统一 16px 圆角。 */
.resource-wall .marquee-track,
.resource-wall .marquee-right .marquee-track,
.resource-wall .marquee-row.slow .marquee-track {
  gap: 24px;
}
.resource-tile-set {
  display: flex;
  flex: 0 0 auto;
  align-items: stretch;
  gap: 24px;
}
.resource-tile-set i {
  display: block;
  flex: 0 0 auto;
  height: 191px;
  overflow: hidden;
  border-radius: 16px;
  background-repeat: no-repeat;
  background-color: #f7f8fa;
  transition: transform .3s var(--ease-out), filter .3s ease;
}
.resource-tile-set i:hover {
  z-index: 1;
  filter: saturate(1.035) contrast(1.01);
  transform: scale(1.015);
}
.resource-tiles-row-1 i {
  background-image: url("assets/resource-row-1.png");
  background-size: 1232px 191px;
}
.resource-tiles-row-1 i:nth-child(1) { width: 302px; background-position: 0 0; }
.resource-tiles-row-1 i:nth-child(2) { width: 302px; background-position: -326px 0; }
.resource-tiles-row-1 i:nth-child(3) { width: 300px; background-position: -650px 0; }
.resource-tiles-row-1 i:nth-child(4) { width: 258px; background-position: -974px 0; }
.resource-tiles-row-2 i {
  background-image: url("assets/resource-row-2.png");
  background-size: 1304px 191px;
}
.resource-tiles-row-2 i:nth-child(1) { width: 340px; background-position: 0 0; }
.resource-tiles-row-2 i:nth-child(2) { width: 300px; background-position: -363px 0; }
.resource-tiles-row-2 i:nth-child(3) { width: 302px; background-position: -686px 0; }
.resource-tiles-row-2 i:nth-child(4) { width: 293px; background-position: -1011px 0; }
.resource-tiles-row-3 i {
  background-image: url("assets/resource-row-3.png");
  background-size: 1248px 191px;
}
.resource-tiles-row-3 i:nth-child(1) { width: 318px; background-position: 0 0; }
.resource-tiles-row-3 i:nth-child(2) { width: 300px; background-position: -342px 0; }
.resource-tiles-row-3 i:nth-child(3) { width: 301px; background-position: -665px 0; }
.resource-tiles-row-3 i:nth-child(4) { width: 259px; background-position: -989px 0; }
.resource-wall .marquee-row:hover img { transform: none; }

/* 第五部分：使用设计稿点阵背景和三张企业保障配图。 */
.security-frame {
  background-color: #fff;
  background-image: url("assets/security-dot-field.svg?v=2");
  background-position: center top;
  background-size: 100% auto;
  background-repeat: repeat-y;
}
.security-heading { background: rgba(255, 255, 255, .78); }
.security-grid { background: rgba(255, 255, 255, .38); }
.security-card { background: transparent; }
.security-visual {
  height: min(318px, 20vw);
  min-height: 240px;
  display: grid;
  place-items: center;
  background: transparent;
}
.security-visual img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center top;
  transform: translateZ(0);
  animation: security-art-float 5.8s ease-in-out infinite alternate;
}
.security-card:nth-child(2) .security-visual img { animation-delay: -1.8s; }
.security-card:nth-child(3) .security-visual img { animation-delay: -3.2s; }
.security-card:hover .security-visual img { transform: translateY(-4px) scale(1.018); }
.security-copy { background: rgba(255, 255, 255, .8); }
.security-tail { background: rgba(255, 255, 255, .24); }
@keyframes security-art-float {
  from { transform: translateY(0); }
  to { transform: translateY(-5px); }
}
.security-visual object {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center top;
  transition: transform .35s var(--ease-out);
}
.security-card:hover .security-visual object { transform: translateY(-3px) scale(1.012); }
.security-visual img {
  animation: none !important;
  transition: transform .35s var(--ease-out) !important;
  transform: scale(1) !important;
}
.security-card:hover .security-visual img {
  animation: none !important;
  transform: scale(1.02) !important;
}
.security-frame::after { display: none; }
.closing-shell { border-top: 0; }

/* 第六部分：行动区和页脚共用一张连续渐变背景。 */
.closing-shell {
  min-height: 664px;
  background: #f4f7ff url("assets/closing-bg.png") center top / cover no-repeat;
}
.closing {
  min-height: 400px;
  padding: 102px 24px 72px;
  background: transparent;
}
.closing h2 {
  margin: 0;
  color: #22252a;
  font-size: clamp(30px, 2.4vw, 42px);
  font-weight: 650;
  letter-spacing: -.035em;
}
.closing p:not(.section-kicker) {
  margin-top: 18px;
  color: #989da8;
  font-size: 14px;
}
.closing-actions { margin-top: 30px; align-items: center; }
.closing-actions .button { width: 106px; height: 40px; border-radius: 999px; font-size: 14px; }
.footer {
  width: min(1368px, 86vw);
  margin: 0 auto;
  padding: 0 0 28px;
  background: transparent;
}
.footer-main {
  min-height: 88px;
  padding: 22px 14px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 32px;
  border-top: 1px solid rgba(221, 224, 231, .9);
  border-bottom: 1px solid rgba(221, 224, 231, .9);
}
.footer-brand-group { display: flex; align-items: center; gap: 20px; }
.footer-brand img { width: 112px; }
.footer-main p { color: #989da8; font-size: 13px; }
.footer-links { align-items: center; gap: 34px; color: #858b97; font-size: 13px; }
.footer-link-title {
  color: #31353d;
  font-weight: 650;
  cursor: default;
}
.footer-bottom {
  width: 100%;
  margin: 0;
  padding: 22px 14px 0;
  display: grid;
  justify-items: center;
  text-align: center;
  gap: 12px;
  border: 0;
  color: #a3a8b2;
  font-size: 12px;
}
.footer-meta {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px 18px;
  text-align: center;
}
.footer-bottom p { margin: 0; }

@media (max-width: 900px) {
  .resource-wall .marquee-track,
  .resource-wall .marquee-right .marquee-track,
  .resource-wall .marquee-row.slow .marquee-track,
  .resource-tile-set { gap: 18px; }
  .security-visual { height: 310px; }
  .security-visual img { object-fit: contain; }
  .closing-shell { background-size: auto 100%; }
  .closing { min-height: 350px; padding: 88px 24px 60px; }
  .footer { width: calc(100% - 40px); }
  .footer-main { grid-template-columns: 1fr; justify-items: center; }
  .footer-brand-group { flex-direction: column; gap: 12px; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 18px 26px; }
  .footer-meta { gap: 10px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .security-visual img { animation: none; }
  .resource-tile-set i { transition: none; }
}

/* 第二屏保持静态清晰，只让标题下的渐变笔触展开。 */
.features.is-heading-visible .feature-stroke-word::after {
  animation: feature-stroke-in 650ms 720ms cubic-bezier(.22, 1, .36, 1) both;
}
@keyframes feature-stroke-in {
  from { opacity: 0; clip-path: inset(0 20% 0 20%); }
  to { opacity: 1; clip-path: inset(0); }
}
.feature-stage {
  position: relative;
  width: min(1368px, 86vw);
  height: min(1038px, 65.2544vw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: min(46px, 2.8918vw) minmax(0, 1fr) min(46px, 2.8918vw);
}
.feature-stage::before,
.feature-stage::after {
  content: "";
  position: absolute;
  z-index: 4;
  left: 50%;
  width: 100vw;
  height: 1px;
  background: #dde0e7;
  transform: translateX(-50%);
  pointer-events: none;
}
.feature-stage::before { top: 0; }
.feature-stage::after { bottom: 0; }
.feature-side-rail {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  border-right: 1px solid #dde0e7;
  border-left: 1px solid #dde0e7;
  object-fit: cover;
  background: #fff;
  pointer-events: none;
  user-select: none;
}
.feature-side-rail-left { grid-column: 1; }
.feature-side-rail-right { grid-column: 3; }
.feature-grid {
  grid-column: 2;
  width: 100%;
  height: 100%;
  margin: 0;
  display: grid;
  grid-template-columns: 39% 22% 39%;
  grid-template-rows: repeat(2, 1fr);
  border: 0;
  border-radius: 0;
  overflow: hidden;
  background: #fff;
  box-shadow: none;
}
.feature-card {
  min-height: 0;
  display: block;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: #fcfcfc;
  box-shadow: none;
  transition: none;
}
.feature-card:hover {
  z-index: auto;
  background: #fcfcfc;
  box-shadow: none;
}
.feature-card-top-left {
  position: relative;
  grid-column: 1 / 3;
  grid-row: 1;
  border-right: 1px solid #dde0e7;
  border-bottom: 1px solid #dde0e7;
}
.feature-card-art-one {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  user-select: none;
}
.feature-interactive-svg {
  display: block;
  width: 100%;
  height: 100%;
}
.feature-svg-part {
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 420ms cubic-bezier(.2, .8, .2, 1);
  will-change: transform;
}
.feature-svg-part.is-active {
  transform: translateY(-5px) scale(1.025);
}
.feature-svg-hotspot {
  cursor: pointer;
  outline: none;
}
.feature-svg-hotspot:focus-visible {
  stroke: rgba(76, 126, 255, .72);
  stroke-width: 2;
}
.feature-svg-motion {
  transform-box: fill-box;
  transform-origin: center;
}
.feature-svg-part.is-active .feature-motion-pie {
  animation: featurePieMotion 1.8s ease-in-out infinite alternate;
}
.feature-svg-part.is-active .feature-motion-line {
  animation: featureLineMotion 1.25s ease-in-out infinite alternate;
}
.feature-svg-part.is-active .feature-motion-gauge {
  animation: featureGaugeMotion 1.35s ease-in-out infinite alternate;
}
.feature-svg-part.is-active .feature-motion-strip {
  animation: featureStripMotion 1.2s ease-in-out infinite alternate;
}
.feature-svg-part.is-active .feature-motion-bar {
  animation: featureBarMotion 1.15s ease-in-out infinite alternate;
}
.feature-svg-part.is-active .feature-motion-collab {
  animation: featureCollabMotion 1.45s ease-in-out infinite alternate;
}
.feature-svg-part.is-active .feature-motion-scatter {
  animation: featureScatterMotion 1.35s ease-in-out infinite alternate;
}
.feature-svg-part.is-active .feature-motion-heatmap {
  animation: featureHeatmapMotion 1.5s ease-in-out infinite alternate;
}
@keyframes featurePieMotion {
  from { transform: rotate(-1.4deg); }
  to { transform: rotate(1.4deg); }
}
@keyframes featureLineMotion {
  from { transform: translateX(-1.5px); filter: saturate(.96); }
  to { transform: translateX(2px); filter: saturate(1.14); }
}
@keyframes featureGaugeMotion {
  from { transform: rotate(-1.6deg); }
  to { transform: rotate(1.6deg); }
}
@keyframes featureStripMotion {
  from { transform: translateX(-1px); }
  to { transform: translateX(2px); }
}
@keyframes featureBarMotion {
  from { transform: scaleY(.985); }
  to { transform: scaleY(1.025); }
}
@keyframes featureCollabMotion {
  from { transform: translateY(1px) rotate(-.45deg); }
  to { transform: translateY(-1px) rotate(.45deg); }
}
@keyframes featureScatterMotion {
  from { transform: scale(.985); filter: saturate(.96); }
  to { transform: scale(1.025); filter: saturate(1.16); }
}
@keyframes featureHeatmapMotion {
  from { transform: scale(.99); filter: saturate(.96) brightness(1); }
  to { transform: scale(1.018); filter: saturate(1.18) brightness(1.025); }
}
.feature-card-top-left .feature-copy {
  position: relative;
  z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
  .feature-svg-part,
  .feature-svg-motion {
    transition: none !important;
    animation: none !important;
  }
  .feature-svg-part.is-active {
    transform: none;
  }
}
.feature-card-top-right {
  position: relative;
  grid-column: 3;
  grid-row: 1;
  border-bottom: 1px solid #dde0e7;
}
.feature-card-art-two {
  position: absolute;
  inset: 0 0 auto;
  width: 100%;
  height: calc(100% + 2px);
  display: block;
  object-fit: fill;
  pointer-events: none;
  user-select: none;
  transform: scale(1.034);
  transform-origin: 100% 100%;
  transition: transform 460ms cubic-bezier(.2, .8, .2, 1);
  will-change: transform;
}
.feature-card-top-right:hover .feature-card-art-two {
  transform: scale(1.04);
}
.feature-card-top-right .feature-copy {
  position: relative;
  z-index: 1;
}
@media (prefers-reduced-motion: reduce) {
  .feature-card-art-two {
    transition: none;
  }
  .feature-card-top-right:hover .feature-card-art-two {
    transform: scale(1.034);
  }
}
.feature-card-bottom-left {
  position: relative;
  grid-column: 1;
  grid-row: 2;
  border-right: 1px solid #dde0e7;
}
.feature-card-art-three {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: fill;
  pointer-events: auto;
  user-select: none;
}
.feature-card-bottom-left .feature-copy {
  position: relative;
  z-index: 1;
}
.feature-card-bottom-right {
  position: relative;
  grid-column: 2 / 4;
  grid-row: 2;
}
.feature-card-art-four {
  position: absolute;
  inset: 0 0 auto;
  width: 100%;
  height: calc(100% + 2px);
  display: block;
  object-fit: fill;
  pointer-events: auto;
  user-select: none;
}
.feature-card-bottom-right .feature-copy {
  position: relative;
  z-index: 1;
  pointer-events: none;
}
.feature-copy {
  padding: min(48px, 3.0175vw) min(40px, 2.5146vw) 0;
}
.feature-copy h3 {
  margin: 0 0 14px;
  color: #22252a;
  font-size: clamp(20px, 1.5088vw, 24px);
  font-weight: 650;
  line-height: 1.35;
  letter-spacing: -.02em;
}
.feature-copy p {
  max-width: 600px;
  margin: 0;
  color: #989da8;
  font-size: 14px;
  line-height: 1.68;
}

@media (max-width: 900px) {
  .feature-heading {
    height: 250px;
    padding-top: 92px;
  }
  .feature-heading h2 { font-size: 38px; }
  .feature-heading > p:last-child { font-size: 15px; }
  .feature-stage {
    width: 100%;
    height: 900px;
    grid-template-columns: 32px minmax(0, 1fr) 32px;
  }
  .feature-side-rail { width: 32px; height: 900px; }
  .feature-grid { height: 900px; grid-template-rows: repeat(2, 450px); }
  .feature-copy { padding: 54px 42px 0; }
  .feature-copy h3 { font-size: 21px; }
  .feature-copy p { font-size: 14px; }
}

@media (max-width: 560px) {
  .feature-heading {
    height: 220px;
    padding: 76px 20px 0;
  }
  .feature-heading h2 { font-size: 31px; }
  .feature-heading > p:last-child { margin-top: 16px; font-size: 14px; }
  .feature-stroke-word::after {
    top: calc(100% - 17px);
    bottom: auto;
    width: 174px;
    height: 30px;
  }
  .feature-stage {
    height: 1280px;
    grid-template-columns: 20px minmax(0, 1fr) 20px;
  }
  .feature-side-rail {
    width: 20px;
    height: 1280px;
  }
  .feature-grid {
    height: 1280px;
    grid-template-columns: 1fr;
    grid-template-rows: repeat(4, 320px);
  }
  .feature-card-top-left,
  .feature-card-top-right,
  .feature-card-bottom-left,
  .feature-card-bottom-right {
    grid-column: 1;
    border-right: 0;
    border-bottom: 1px solid #dde0e7;
  }
  .feature-card-top-left { grid-row: 1; }
  .feature-card-top-right { grid-row: 2; }
  .feature-card-bottom-left { grid-row: 3; }
  .feature-card-bottom-right { grid-row: 4; border-bottom: 0; }
  .feature-copy,
  .feature-card-bottom-left .feature-copy {
    padding: 46px 30px 0;
  }
  .feature-copy h3 { font-size: 20px; }
}

/* 腾讯乐享式悬浮磨砂导航，保留太极河图配色和内容。 */
.site-header,
.site-header.is-docked {
  top: 16px;
  padding: 0 50px;
}
.site-header::before,
.site-header.is-docked::before { display: none; }
.nav-shell,
.site-header.is-docked .nav-shell {
  width: min(1420px, 100%);
  min-height: 64px;
  padding: 0 12px 0 24px;
  border: 1px solid rgba(255, 255, 255, .82);
  border-radius: 32px;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 14px 38px rgba(38, 50, 82, .09);
  backdrop-filter: blur(24px) saturate(145%);
  -webkit-backdrop-filter: blur(24px) saturate(145%);
  transition: background-color .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.site-header.is-docked .nav-shell {
  background: rgba(255, 255, 255, .86);
  border-color: rgba(255, 255, 255, .72);
  box-shadow: 0 12px 34px rgba(36, 45, 72, .1);
}
.brand,
.site-header.is-docked .brand {
  width: 170px;
  padding: 0 8px 0 4px;
}
.brand img { width: 118px; }
.nav-menu { margin-left: 0; }
.nav-links { gap: 6px; }
.nav-links > a,
.nav-dropdown > button,
.nav-text {
  min-height: 40px;
  padding: 0 15px;
  border-radius: 10px;
  color: #282d38;
  font-size: 14px;
  font-family: inherit;
  font-weight: 400;
}
.nav-links > a:hover,
.nav-dropdown > button:hover,
.nav-dropdown.is-open > button,
.nav-text:hover,
.nav-links > a.is-active {
  color: #282d38;
  background: #f2f3f5;
}
.nav-dropdown > button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  cursor: pointer;
  transition: background-color .2s ease;
}
.nav-dropdown > button > span {
  margin-left: 0;
  transform: none !important;
}
.nav-product-arrow {
  width: 16px;
  height: 16px;
  margin-left: 5px;
  transition: transform .25s var(--ease-out);
}
.nav-dropdown.is-open .nav-product-arrow { transform: rotate(180deg); }
.nav-product-panel {
  top: calc(100% + 14px);
  left: -18px;
  width: 382px;
  padding: 12px;
  border: 1px solid rgba(213, 217, 226, .82);
  border-radius: 20px;
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 22px 58px rgba(35, 42, 61, .15);
  backdrop-filter: blur(24px) saturate(145%);
  -webkit-backdrop-filter: blur(24px) saturate(145%);
  transform: translateY(-8px) scale(.985);
}
.nav-dropdown.is-open .nav-product-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.nav-product-panel .nav-product-option {
  min-height: 78px;
  padding: 10px 12px;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 14px;
  border-radius: 14px;
  transition: background-color .2s ease;
}
.nav-product-panel .nav-product-option:hover { background: #f3f4f6; }
.nav-product-icon {
  width: 54px;
  height: 54px;
  flex: 0 0 54px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid #e0e2e7;
  border-radius: 13px;
  background: #fff;
  box-shadow: 0 4px 12px rgba(34, 40, 56, .04);
  transition: border-color .2s ease, transform .25s var(--ease-out);
}
.nav-product-option:hover .nav-product-icon {
  border-color: #cfd3db;
  transform: translateY(-1px);
}
.nav-product-icon img {
  width: 30px;
  height: 30px;
  display: block;
  object-fit: contain;
}
.nav-product-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.nav-product-copy strong {
  color: #22252a;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.3;
}
.nav-product-copy small {
  color: #8a909c;
  font-size: 12px;
  line-height: 1.45;
}

@media (max-width: 900px) {
  .site-header,
  .site-header.is-docked {
    top: 10px;
    padding: 0 12px;
  }
  .nav-shell,
  .site-header.is-docked .nav-shell {
    width: 100%;
    min-height: 58px;
    padding: 7px 9px 7px 16px;
    border-radius: 18px;
  }
  .brand,
  .site-header.is-docked .brand { width: auto; padding: 0; }
  .brand img { width: 96px; }
  .nav-links > a,
  .nav-dropdown > button,
  .nav-text { width: 100%; min-height: 46px; justify-content: space-between; }
  .nav-product-panel {
    position: static;
    width: 100%;
    max-height: 0;
    margin: 0;
    padding: 0 6px;
    overflow: hidden;
    border: 0;
    border-radius: 14px;
    background: #f7f8fa;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: max-height .32s var(--ease-out), padding .32s var(--ease-out);
  }
  .nav-dropdown.is-open .nav-product-panel { max-height: 300px; padding: 6px; }
  .nav-product-panel .nav-product-option { min-height: 68px; padding: 8px; }
  .nav-product-icon { width: 48px; height: 48px; flex-basis: 48px; }
  .nav-product-icon img { width: 27px; height: 27px; }
}

/* v118：乐享式导航位置与吸顶状态；全站三档响应式收口。 */
@media (min-width: 901px) {
  .site-header {
    top: 16px;
    padding: 0 50px;
    transition: top .46s var(--ease-out), padding .46s var(--ease-out);
  }
  .nav-shell {
    width: min(1420px, 100%);
    min-height: 64px;
    padding: 0 12px 0 24px;
    border: 1px solid rgba(255, 255, 255, .82);
    border-radius: 32px;
    background: rgba(255, 255, 255, .88);
    box-shadow: 0 14px 38px rgba(38, 50, 82, .09);
    backdrop-filter: blur(24px) saturate(145%);
    -webkit-backdrop-filter: blur(24px) saturate(145%);
    transition:
      width .46s var(--ease-out),
      min-height .46s var(--ease-out),
      padding .46s var(--ease-out),
      border-radius .46s var(--ease-out),
      background-color .32s ease,
      border-color .32s ease,
      box-shadow .32s ease,
      backdrop-filter .32s ease,
      -webkit-backdrop-filter .32s ease;
  }
  .site-header.is-docked {
    top: 0;
    padding: 0;
  }
  .site-header.is-docked .nav-shell {
    width: 100%;
    max-width: none;
    min-height: 56px;
    padding: 0 clamp(28px, 4vw, 76px);
    border: 0;
    border-bottom: 1px solid rgba(211, 216, 224, .82);
    border-radius: 0;
    background: rgba(255, 255, 255, .9);
    box-shadow: 0 8px 26px rgba(37, 45, 69, .06);
    backdrop-filter: blur(26px) saturate(135%);
    -webkit-backdrop-filter: blur(26px) saturate(135%);
  }
  .brand,
  .site-header.is-docked .brand {
    width: auto;
    margin-right: 18px;
    padding: 0 4px;
  }
  .nav-menu {
    flex: 1 1 auto;
    justify-content: flex-start;
  }
  .nav-links {
    flex: 0 1 auto;
    justify-content: flex-start;
    gap: 4px;
  }
  .nav-actions { margin-left: auto; }
}

.nav-links > a,
.nav-dropdown > button {
  border-radius: 10px;
}
.nav-links > a:hover,
.nav-dropdown > button:hover,
.nav-dropdown.is-open > button,
.nav-links > a.is-active {
  color: #282d38;
  background: #f1f2f4;
}

/* 中等宽度：第二屏四块改为规则 2 × 2，不再压缩中间窄列。 */
@media (min-width: 768px) and (max-width: 1179px) {
  .feature-stage {
    width: min(calc(100% - 32px), 1000px);
    height: auto;
    grid-template-columns: 24px minmax(0, 1fr) 24px;
    align-items: stretch;
  }
  .feature-side-rail {
    width: 24px;
    height: 100%;
  }
  .feature-grid {
    height: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, clamp(390px, 44vw, 470px));
  }
  .feature-card-top-left,
  .feature-card-top-right,
  .feature-card-bottom-left,
  .feature-card-bottom-right {
    grid-column: auto;
    grid-row: auto;
    min-width: 0;
  }
  .feature-card-top-left,
  .feature-card-bottom-left { border-right: 1px solid #dde0e7; }
  .feature-card-top-left,
  .feature-card-top-right { border-bottom: 1px solid #dde0e7; }
  .feature-card-bottom-right { border-bottom: 0; }
  .feature-copy { padding: 44px 32px 0; }
  .feature-copy p { overflow-wrap: anywhere; }
  .feature-copy p br { display: none; }
}

/* 手机和极窄窗口：第二屏逐块单列，后续图文区域同步约束在视口内。 */
@media (max-width: 767px) {
  html, body { max-width: 100%; overflow-x: clip; }
  .site-header,
  .site-header.is-docked {
    top: 10px;
    padding: 0 12px;
    transition: top .36s var(--ease-out), padding .36s var(--ease-out);
  }
  .site-header.is-docked {
    top: 0;
    padding: 0;
  }
  .nav-shell,
  .site-header.is-docked .nav-shell {
    width: 100%;
    min-height: 58px;
    padding: 7px 9px 7px 16px;
    transition: border-radius .36s var(--ease-out), background-color .3s ease, box-shadow .3s ease;
  }
  .site-header.is-docked .nav-shell {
    min-height: 56px;
    border: 0;
    border-bottom: 1px solid rgba(211, 216, 224, .82);
    border-radius: 0;
    background: rgba(255, 255, 255, .9);
    box-shadow: 0 7px 22px rgba(37, 45, 69, .06);
    backdrop-filter: blur(24px) saturate(135%);
    -webkit-backdrop-filter: blur(24px) saturate(135%);
  }
  .brand,
  .site-header.is-docked .brand { margin-right: 0; }
  .nav-menu { max-height: calc(100svh - 84px); overflow-y: auto; }
  .nav-links > a,
  .nav-dropdown > button { border-radius: 10px; }

  .feature-stage {
    width: 100%;
    height: auto;
    grid-template-columns: 16px minmax(0, 1fr) 16px;
    align-items: stretch;
  }
  .feature-side-rail {
    width: 16px;
    height: 100%;
  }
  .feature-grid {
    height: auto;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: repeat(4, clamp(340px, 102vw, 420px));
  }
  .feature-card-top-left,
  .feature-card-top-right,
  .feature-card-bottom-left,
  .feature-card-bottom-right {
    grid-column: 1;
    grid-row: auto;
    min-width: 0;
    border-right: 0;
    border-bottom: 1px solid #dde0e7;
  }
  .feature-card-bottom-right { border-bottom: 0; }
  .feature-copy,
  .feature-card-bottom-left .feature-copy {
    padding: 38px 24px 0;
  }
  .feature-copy p {
    max-width: 100%;
    overflow-wrap: anywhere;
  }
  .feature-copy p br { display: none; }
  .feature-card-art,
  .feature-interactive-svg,
  .feature-card object,
  .feature-card img { max-width: 100%; }

  .workflow-frame,
  .resource-content-frame,
  .security-frame { width: 100%; max-width: 100%; }
  .workflow-row {
    width: 100%;
    height: auto;
    min-width: 0;
    grid-template-columns: minmax(0, 1fr);
    overflow: hidden;
  }
  .workflow-copy,
  .workflow-visual-demo,
  .workflow-visual-data,
  .workflow-visual-ai { min-width: 0; width: 100%; }
  .workflow-copy { padding: 48px 28px; }
  .workflow-copy p { overflow-wrap: anywhere; }
  .workflow-demo-background,
  .workflow-demo-svg,
  .workflow-data-background,
  .workflow-data-svg,
  .workflow-ai-background,
  .workflow-ai-svg {
    max-width: 100%;
    overflow: hidden;
  }
  .resource-heading,
  .security-heading { padding-right: 20px; padding-left: 20px; }
  .security-grid { grid-template-columns: minmax(0, 1fr); }
  .security-card { min-width: 0; }
  .footer { width: calc(100% - 32px); }
}

@media (max-width: 420px) {
  .feature-stage { grid-template-columns: 10px minmax(0, 1fr) 10px; }
  .feature-side-rail { width: 10px; }
  .feature-copy,
  .feature-card-bottom-left .feature-copy { padding: 34px 20px 0; }
  .feature-copy h3 { font-size: 19px; }
  .workflow-copy { padding: 44px 22px; }
  .workflow-copy h3 { font-size: 26px; }
}

/* v119：64px 吸顶导航、纯悬停反馈与紧凑产品菜单。 */
.site-header::before { height: 64px; }

@media (min-width: 901px) {
  .site-header.is-docked .nav-shell { min-height: 64px; }

  .nav-shell { position: relative; }

  .nav-links {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
  }
}

.nav-links > a,
.nav-dropdown > button {
  min-height: 40px;
  padding: 0 16px;
  border-radius: 12px;
}

.nav-links > a.is-active,
.nav-dropdown.is-open > button {
  color: #282d38;
  background: transparent;
}

.nav-links > a:hover,
.nav-dropdown > button:hover {
  color: #282d38;
  background: #f1f2f4;
}

.nav-links > a:focus-visible,
.nav-dropdown > button:focus-visible,
.nav-text:focus-visible,
.nav-primary:focus-visible {
  outline: 2px solid rgba(73, 112, 255, .38);
  outline-offset: 2px;
}

.nav-text {
  flex-basis: 106px;
  width: 106px;
  border-radius: 999px;
}

.nav-product-panel {
  width: 336px;
  padding: 8px;
  border-radius: 18px;
}

.nav-product-panel .nav-product-option {
  min-height: 64px;
  padding: 7px 9px;
  gap: 12px;
  border-radius: 12px;
}

.nav-product-icon {
  width: 46px;
  height: 46px;
  flex-basis: 46px;
  border-radius: 12px;
}

.nav-product-icon img { width: 27px; height: 27px; }
.nav-product-copy { gap: 3px; }
.nav-product-copy strong { font-size: 14px; }
.nav-product-copy small { font-size: 11px; line-height: 1.35; }

@media (max-width: 900px) {
  .nav-shell,
  .site-header.is-docked .nav-shell { min-height: 64px; }
  .site-header.is-docked .nav-shell { min-height: 64px; }
  .nav-menu { max-height: calc(100svh - 92px); }
  .nav-product-panel { width: 100%; }
  .nav-text,
  .nav-primary { width: 100%; flex-basis: auto; }
}

/* v120：窄屏视觉素材严格沿用原始画布比例，避免留边与裁切。 */
@media (max-width: 900px) {
  .workflow-visual-placeholder,
  .workflow-visual-demo,
  .workflow-visual-data,
  .workflow-visual-ai {
    width: 100%;
    height: auto;
    min-height: 0;
    aspect-ratio: 688 / 520;
  }
}

.security-visual { position: relative; }
.security-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100% !important;
  object-fit: contain;
  object-position: center top;
}

/* v121：资源墙改用 12 张独立高清图片，统一卡片比例与圆角。 */
.resource-tile-set i,
.resource-tiles-row-1 i,
.resource-tiles-row-2 i,
.resource-tiles-row-3 i,
.resource-tiles-row-1 i:nth-child(n),
.resource-tiles-row-2 i:nth-child(n),
.resource-tiles-row-3 i:nth-child(n) {
  width: 302px;
  height: 191px;
  background: #f7f8fa;
}

.resource-tile-set i img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  border-radius: inherit;
  transform: translateZ(0);
}

.resource-wall .marquee-row:hover .resource-tile-set i img { transform: translateZ(0); }

/* 点阵贯穿标题、三张卡片和尾部，保留设计稿中若隐若现的密度。 */
.security-frame {
  background-color: #fff;
  background-image: url("assets/security-dot-field.svg?v=2");
  background-position: center top;
  background-size: 100% auto;
  background-repeat: repeat-y;
}
.security-heading { background: transparent; }
.security-grid { background: rgba(255, 255, 255, .08); }
.security-copy { background: rgba(255, 255, 255, .58); }
.security-tail { background: transparent; }

/* v124：企业数据资产三张卡片的图文区统一为浅灰底，保留细线与配图阴影。 */
.security-card,
.security-card:hover,
.security-visual,
.security-copy {
  background: #fcfcfc;
}

/* 页脚说明区按整个页面居中，不受 86vw 主内容轨道影响。 */
.footer-bottom {
  width: 100vw;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  padding-left: max(20px, env(safe-area-inset-left));
  padding-right: max(20px, env(safe-area-inset-right));
}
.footer-meta {
  width: auto;
  max-width: calc(100vw - 40px);
  margin-inline: auto;
  justify-content: center;
}
.footer-bottom > p { width: auto; text-align: center; }
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 18px;
  line-height: 1.65;
}
.footer-police {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.footer-police img {
  width: 18px;
  height: 18px;
  object-fit: contain;
}

/* v122：导航文字悬停统一为操作按钮同款胶囊轮廓。 */
.nav-links > a,
.nav-dropdown > button {
  border-radius: 999px;
}

/* v126：参考 AI Passport 的分区标题——轻微虚化、上移后清晰归位。 */
.section-title-motion h2,
.section-title-motion > p:last-child {
  will-change: opacity, transform, filter;
}
.section-title-motion h2 {
  opacity: 0;
  filter: blur(12px);
  transform: translateY(18px) scale(.985);
  transition:
    opacity 760ms cubic-bezier(.22, 1, .36, 1),
    transform 820ms cubic-bezier(.22, 1, .36, 1),
    filter 820ms cubic-bezier(.22, 1, .36, 1);
}
.section-title-motion > p:last-child {
  opacity: 0;
  filter: blur(5px);
  transform: translateY(12px);
  transition:
    opacity 620ms 120ms ease,
    transform 720ms 120ms cubic-bezier(.22, 1, .36, 1),
    filter 720ms 120ms cubic-bezier(.22, 1, .36, 1);
}
.section-title-motion.is-title-visible h2,
.section-title-motion.is-title-visible > p:last-child {
  opacity: 1;
  filter: blur(0);
  transform: none;
}

/* v138：第二屏标题增强入场感，并在重新进入视口时再次播放。 */
.features .section-title-motion h2 {
  filter: blur(18px);
  transform: translateY(28px) scale(.98);
  transition:
    opacity 900ms 150ms cubic-bezier(.22, 1, .36, 1),
    transform 980ms 150ms cubic-bezier(.22, 1, .36, 1),
    filter 980ms 150ms cubic-bezier(.22, 1, .36, 1);
}
.features .section-title-motion > p:last-child {
  filter: blur(7px);
  transform: translateY(16px);
  transition:
    opacity 680ms 260ms ease,
    transform 800ms 260ms cubic-bezier(.22, 1, .36, 1),
    filter 800ms 260ms cubic-bezier(.22, 1, .36, 1);
}
.features .section-title-motion.is-title-visible h2,
.features .section-title-motion.is-title-visible > p:last-child {
  opacity: 1;
  filter: blur(0);
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .features .section-title-motion h2,
  .features .section-title-motion > p:last-child,
  .section-title-motion h2,
  .section-title-motion > p:last-child {
    opacity: 1;
    filter: none;
    transform: none;
    transition: none;
  }
}

/* v127：窄屏按钮保持稳定高度与胶囊比例，不参与纵向压缩。 */
.nav-primary,
.nav-text,
.button,
.workflow-button {
  box-sizing: border-box;
  flex-shrink: 0;
}

@media (max-width: 560px) {
  .hero-actions .button {
    flex: 0 0 var(--hero-button-height, 48px);
    width: var(--hero-button-width, 156px);
    min-width: var(--hero-button-width, 156px);
    min-height: var(--hero-button-height, 48px);
  }
  .workflow-button {
    flex: 0 0 42px;
    min-height: 42px;
  }
  .closing-actions .button {
    flex: 0 0 44px;
    width: 118px;
    min-width: 118px;
    min-height: 44px;
    padding: 0 20px;
  }
}

/* v143-final：吸顶导航两端与视口保持精确 32px 安全边距。 */
@media (min-width: 901px) {
  .site-header.is-docked .nav-shell {
    padding-right: 32px;
    padding-left: 32px;
  }

  .site-header.is-docked .brand {
    padding-left: 0;
  }
}

/* v146-performance：离开视口的区块暂停循环动画，保持视觉状态但释放合成资源。 */
.is-motion-paused,
.is-motion-paused *,
.is-motion-paused *::before,
.is-motion-paused *::after {
  animation-play-state: paused !important;
}

/* 本地直接打开时阻止半失效预览，明确引导使用一键 HTTP 预览。 */
.local-file-warning[hidden] { display: none; }
.local-file-warning {
  position: fixed;
  z-index: 100000;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: linear-gradient(135deg, rgba(236, 242, 255, .96), rgba(235, 255, 249, .96));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.local-file-warning-card {
  width: min(460px, calc(100vw - 48px));
  padding: 42px 38px;
  border: 1px solid rgba(255, 255, 255, .92);
  border-radius: 28px;
  text-align: center;
  color: #242832;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 28px 80px rgba(64, 81, 143, .16);
}
.local-file-warning-mark {
  width: 48px;
  height: 48px;
  margin: 0 auto 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(135deg, #5e76ff, #58d7cb);
  font-size: 24px;
}
.local-file-warning-card h2 {
  margin: 0;
  font-size: 26px;
  line-height: 1.35;
}
.local-file-warning-card p {
  margin: 14px 0 0;
  color: #858c99;
  font-size: 14px;
  line-height: 1.7;
}
.local-file-warning-card strong {
  margin-top: 16px;
  display: inline-flex;
  padding: 12px 18px;
  border-radius: 999px;
  color: #fff;
  background: #111318;
  font-size: 14px;
  font-weight: 600;
}
.is-file-preview { overflow: hidden; }