:root {
  color-scheme: light;
  --bg: #fff;
  --surface: #fff;
  --text: #101717;
  --muted: #5b6767;
  --accent: #073c42;
  --accent-strong: #052f34;
  --line: #d7dfdf;
  --page: min(1440px, calc(100vw - 64px));
  --header-height: 72px;
  --radius-control: 999px;
  --shadow: 0 22px 70px rgba(7, 60, 66, .1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Avenir Next", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; }
.section-shell { width: var(--page); margin-inline: auto; }
.sr-only, .skip-link:not(:focus) {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link { position: fixed; top: 12px; left: 12px; z-index: 100; padding: 10px 16px; color: #fff; background: var(--accent); border-radius: 999px; }

.site-header {
  position: sticky; top: 0; z-index: 30; height: var(--header-height);
  border-bottom: 1px solid rgba(204, 215, 216, .75);
  background: rgba(255, 255, 255, .93); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.header-inner {
  width: var(--page); height: 100%; margin-inline: auto; display: grid;
  grid-template-columns: 220px minmax(0, 1fr) auto; align-items: center; gap: 28px;
}
.brand { width: 204px; }
.brand img { width: 60%; height: auto; }
.site-nav { display: flex; justify-content: center; align-items: center; gap: clamp(18px, 2vw, 34px); white-space: nowrap; }
.site-nav a, .language-link { position: relative; font-size: 14px; font-weight: 600; }
.site-nav a::after {
  content: ""; position: absolute; right: 0; bottom: -8px; left: 0; height: 1px;
  background: var(--accent); transform: scaleX(0); transform-origin: right; transition: transform 220ms ease;
}
.site-nav a:hover::after, .site-nav a:focus-visible::after, .site-nav a.is-current::after { transform: scaleX(1); transform-origin: left; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.nav-toggle { display: none; }

.button {
  min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 0 24px;
  border: 1px solid transparent; border-radius: var(--radius-control); cursor: pointer; font-size: 15px; font-weight: 700;
  line-height: 1; white-space: nowrap; transition: transform 180ms ease, background-color 180ms ease, color 180ms ease, border-color 180ms ease;
}
.button:hover { transform: translateY(-2px); }
.button:active { transform: translateY(1px) scale(.98); }
.button-primary { color: #fff; background: var(--accent); }
.button-primary:hover { background: var(--accent-strong); }
.button-secondary { color: var(--accent); border-color: var(--accent); background: transparent; }
.button-secondary:hover { color: #fff; background: var(--accent); }
.button-compact { min-height: 42px; padding-inline: 20px; font-size: 14px; }

.solution-hero {
  min-height: min(680px, calc(100dvh - var(--header-height)));
  display: grid; grid-template-columns: minmax(650px, .94fr) minmax(0, 1.06fr); align-items: center;
  gap: 0; padding-block: 48px 42px; overflow: hidden;
}
.solution-hero-copy { position: relative; z-index: 2; padding-left: clamp(0px, 2vw, 32px); }
.solution-hero h1 {
  max-width: 710px; margin: 0; color: var(--accent); font-size: clamp(40px, 3vw, 46px);
  font-weight: 650; letter-spacing: -.055em; line-height: 1.22;
}
.solution-hero-copy > p { max-width: 610px; margin: 30px 0 0; color: var(--muted); font-size: clamp(17px, 1.3vw, 20px); line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.solution-hero-visual { position: relative; z-index: 1; width: 118%; margin: 0 0 0 -8%; }
.solution-hero-visual::before {
  content: ""; position: absolute; z-index: 2; top: 0; bottom: 0; left: 0; width: 13%;
  background: linear-gradient(90deg, #fff 0%, rgba(255,255,255,0) 100%); pointer-events: none;
}
.solution-hero-visual img {
  width: 100%; height: auto; object-fit: contain; object-position: center;
  -webkit-mask-image: radial-gradient(ellipse 96% 92% at 55% 50%, #000 72%, transparent 100%);
  mask-image: radial-gradient(ellipse 96% 92% at 55% 50%, #000 72%, transparent 100%);
}

.scene-section { border-top: 1px solid var(--line); padding-block: 68px 132px; }
.scene-section h2 { margin: 0; color: var(--accent); font-size: clamp(30px, 2.8vw, 42px); font-weight: 650; letter-spacing: -.045em; line-height: 1.2; }
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 44px; border-bottom: 1px solid var(--line); }
.scene-item { min-width: 0; display: grid; grid-template-columns: 68px 1fr 32px; align-items: center; gap: 22px; padding: 8px 30px 38px 8px; }
.scene-item + .scene-item { padding-left: 38px; border-left: 1px solid var(--line); }
.scene-icon { width: 60px; height: 60px; display: grid; place-items: center; color: var(--accent); }
.scene-icon svg { width: 52px; height: 52px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.scene-item h3 { margin: 0; color: var(--accent); font-size: clamp(20px, 1.8vw, 27px); font-weight: 650; letter-spacing: -.025em; }
.scene-item p { margin: 8px 0 0; color: var(--muted); font-size: 15px; }
.scene-link { width: 32px; height: 32px; display: grid; place-items: center; color: var(--accent); }
.scene-link svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; transition: transform 180ms ease; }
.scene-link:hover svg, .scene-link:focus-visible svg { transform: translateX(4px); }

.automation-flow-section { padding-block: 104px 98px; border-top: 1px solid var(--line); background: #fff; }
.section-heading { max-width: 980px; }
.section-heading h2, .transfer-heading h2 {
  margin: 0; color: var(--accent); font-size: clamp(38px, 3.5vw, 54px); font-weight: 650;
  letter-spacing: -.05em; line-height: 1.16;
}
.section-heading p, .transfer-heading p { max-width: 850px; margin: 26px 0 0; color: var(--muted); font-size: 18px; line-height: 1.78; }

.workflow-rail { position: relative; display: grid; grid-template-columns: repeat(7, 1fr); margin: 76px 0 0; padding: 0; list-style: none; }
.workflow-rail::before { content: ""; position: absolute; top: 53px; right: 0; left: 0; height: 1px; background: var(--accent); }
.workflow-rail li { position: relative; display: grid; justify-items: center; gap: 14px; color: var(--accent); text-align: center; }
.workflow-rail strong { font-size: 15px; font-weight: 650; }
.workflow-rail li > span { position: relative; z-index: 2; width: 18px; height: 18px; border: 2px solid var(--accent); border-radius: 50%; background: #fff; }
.workflow-rail .workflow-data-gap::before { content: ""; position: absolute; z-index: 1; top: 50px; left: -28%; width: 56%; height: 7px; background: #fff; border-top: 2px dotted #168590; }
.workflow-data-gap small { position: absolute; top: 70px; color: #6d8587; font-size: 11px; letter-spacing: .08em; }
.automation-equipment { width: min(1180px, 94%); height: 420px; margin: 46px auto 0; overflow: hidden; }
.automation-equipment img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.automation-capabilities { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 18px; }
.automation-capabilities article { padding: 24px 48px 14px; text-align: center; }
.automation-capabilities article + article { border-left: 1px solid var(--line); }
.automation-capabilities h3 { margin: 0; color: var(--accent); font-size: 25px; font-weight: 650; }
.automation-capabilities p { margin: 12px 0 0; color: var(--muted); font-size: 15px; }
.text-link { display: flex; width: max-content; align-items: center; gap: 12px; margin: 46px 0 0 auto; padding-bottom: 5px; border-bottom: 1px solid var(--accent); color: var(--accent); font-size: 16px; font-weight: 650; }
.text-link span { transition: transform 180ms ease; }
.text-link:hover span { transform: translateX(4px); }

.work-transfer-section { padding-block: 104px 96px; border-top: 1px solid var(--line); background: #fbfcfc; }
.transfer-heading { max-width: 1040px; margin-inline: auto; text-align: center; }
.transfer-heading p { margin-inline: auto; }
.transfer-comparison { display: grid; grid-template-columns: minmax(260px, .82fr) 80px minmax(270px, .88fr) minmax(360px, 1.3fr); align-items: center; gap: 34px; margin-top: 68px; }
.task-column h3 { margin: 0 0 20px; color: var(--accent); font-size: 25px; font-weight: 650; }
.task-column ul { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.task-column li { min-height: 68px; display: flex; align-items: center; gap: 22px; border-bottom: 1px solid var(--line); color: #314042; font-size: 16px; }
.task-icon { width: 38px; height: 38px; display: grid; flex: 0 0 auto; place-items: center; color: var(--accent); }
.task-icon svg { width: 32px; height: 32px; fill: none; stroke: currentColor; stroke-width: 1.45; stroke-linecap: round; stroke-linejoin: round; }
.automated-tasks li { color: var(--accent); font-weight: 600; }
.automated-tasks li span { width: 34px; color: #779092; font-size: 12px; letter-spacing: .08em; }
.transfer-arrow { display: flex; align-items: center; color: var(--accent); }
.transfer-arrow span { width: 100%; height: 1px; background: var(--accent); }
.transfer-arrow svg { width: 28px; height: 20px; margin-left: -3px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.transfer-equipment { height: 400px; margin: 26px 0 0; overflow: hidden; }
.transfer-equipment img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.monitoring-band { margin-top: 58px; padding-block: 30px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.monitoring-message { display: flex; align-items: center; justify-content: center; gap: 18px; color: var(--accent); }
.monitoring-message strong { font-size: clamp(22px, 2.2vw, 32px); font-weight: 600; letter-spacing: -.025em; }
.monitoring-icon { width: 44px; height: 44px; display: grid; place-items: center; }
.monitoring-icon svg { width: 38px; height: 38px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.monitoring-band ul { display: grid; grid-template-columns: repeat(4, 1fr); margin: 28px 0 0; padding: 0; list-style: none; }
.monitoring-band li { position: relative; color: var(--muted); text-align: center; font-size: 15px; }
.monitoring-band li::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 10px; border-radius: 50%; background: #168590; vertical-align: 2px; }
.special-flow-list { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 34px; color: var(--accent); }
.special-flow-list span { padding: 8px 30px; text-align: center; font-weight: 600; }
.special-flow-list span + span { border-left: 1px solid var(--line); }

.site-footer { padding-block: 68px 26px; color: #dce7e8; background: var(--accent-strong); }
.footer-grid { display: grid; grid-template-columns: minmax(280px, 1.4fr) repeat(3, 1fr); gap: 56px; }
.footer-brand img { width: 150px; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 420px; margin: 18px 0 0; color: #aebfc1; }
.footer-grid h2 { margin: 0 0 18px; color: #fff; font-size: 14px; }
.footer-grid a { display: block; margin: 11px 0; color: #aebfc1; font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 54px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.16); color: #8fa7aa; font-size: 13px; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 650ms ease, transform 650ms ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 1180px) {
  :root { --page: min(100% - 48px, 1080px); }
  .header-inner { grid-template-columns: 170px minmax(0, 1fr) auto; gap: 18px; }
  .site-nav { gap: 17px; }
  .site-nav a { font-size: 13px; }
  .solution-hero { grid-template-columns: minmax(540px, .94fr) minmax(0, 1.06fr); }
  .solution-hero h1 { font-size: 40px; }
  .solution-hero-visual { width: 122%; margin-left: -13%; }
  .scene-item { grid-template-columns: 55px 1fr 26px; gap: 14px; padding-right: 20px; }
  .scene-item + .scene-item { padding-left: 24px; }
  .scene-icon { width: 52px; height: 52px; }
  .scene-icon svg { width: 46px; height: 46px; }
  .automation-equipment { height: 360px; }
  .transfer-comparison { grid-template-columns: minmax(230px, .9fr) 50px minmax(240px, 1fr) minmax(270px, 1.05fr); gap: 22px; }
  .task-column li { gap: 14px; font-size: 14px; }
  .transfer-equipment { height: 330px; }
}

@media (max-width: 820px) {
  :root { --page: min(100% - 32px, 680px); --header-height: 64px; }
  .header-inner { position: relative; grid-template-columns: 1fr auto auto; }
  .brand { width: 160px; }
  .nav-toggle { display: grid; width: 42px; height: 42px; place-content: center; gap: 6px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: #fff; cursor: pointer; }
  .nav-toggle-line { width: 18px; height: 1px; background: var(--accent); }
  .site-nav { position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: none; justify-content: stretch; align-items: stretch; gap: 0; padding: 14px; border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); }
  .site-nav.is-open { display: grid; }
  .site-nav a { padding: 12px; font-size: 15px; }
  .site-nav a::after { display: none; }
  .header-actions .button { display: none; }
  .solution-hero { min-height: auto; grid-template-columns: 1fr; gap: 26px; padding-block: 56px 34px; }
  .solution-hero-copy { padding-left: 0; }
  .solution-hero h1 { max-width: 650px; font-size: clamp(38px, 8.6vw, 54px); }
  .solution-hero-copy > p { margin-top: 24px; font-size: 17px; }
  .solution-hero-visual { width: 112%; margin: 0 -6%; }
  .solution-hero-visual::before { display: none; }
  .scene-section { padding-block: 58px 72px; }
  .scene-grid { grid-template-columns: 1fr; margin-top: 30px; }
  .scene-item, .scene-item + .scene-item { grid-template-columns: 62px 1fr 32px; padding: 28px 4px; border-top: 1px solid var(--line); border-left: 0; }
  .scene-grid { border-bottom: 0; }
  .automation-flow-section, .work-transfer-section { padding-block: 76px 70px; }
  .section-heading h2, .transfer-heading h2 { font-size: clamp(36px, 7.6vw, 50px); }
  .section-heading p, .transfer-heading p { font-size: 17px; }
  .workflow-rail { grid-template-columns: 1fr; gap: 0; margin-top: 46px; padding-left: 30px; }
  .workflow-rail::before { top: 0; bottom: 0; left: 8px; width: 1px; height: auto; }
  .workflow-rail li { min-height: 66px; grid-template-columns: 22px 1fr; justify-items: start; align-items: start; gap: 18px; text-align: left; }
  .workflow-rail strong { grid-column: 2; grid-row: 1; font-size: 16px; }
  .workflow-rail li > span { grid-column: 1; grid-row: 1; width: 17px; height: 17px; margin-left: -30px; }
  .workflow-rail .workflow-data-gap::before { top: -8px; bottom: 8px; left: 7px; width: 5px; height: auto; border-top: 0; border-left: 2px dotted #168590; }
  .workflow-data-gap small { position: static; grid-column: 2; margin-top: -10px; }
  .automation-equipment { width: 100%; height: auto; aspect-ratio: 16 / 9; margin-top: 24px; }
  .automation-capabilities { grid-template-columns: 1fr; margin-top: 28px; }
  .automation-capabilities article, .automation-capabilities article + article { padding: 24px 0; border-top: 1px solid var(--line); border-left: 0; text-align: left; }
  .transfer-heading { text-align: left; }
  .transfer-comparison { grid-template-columns: 1fr 52px 1fr; gap: 18px; }
  .transfer-equipment { grid-column: 1 / -1; height: auto; aspect-ratio: 16 / 8; margin-top: 20px; }
  .monitoring-message { justify-content: flex-start; }
  .monitoring-band ul { grid-template-columns: 1fr 1fr; gap: 18px 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  :root { --page: calc(100% - 28px); }
  .header-inner { grid-template-columns: 1fr auto auto; gap: 10px; }
  .brand { width: 140px; }
  .brand img { width: 70%; }
  .language-link { font-size: 13px; }
  .solution-hero { gap: 18px; padding-top: 42px; }
  .solution-hero h1 { font-size: clamp(34px, 10.1vw, 45px); line-height: 1.25; }
  .solution-hero h1 br { display: none; }
  .solution-hero-copy > p { font-size: 16px; }
  .hero-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 28px; }
  .button { min-height: 46px; padding-inline: 10px; font-size: 14px; }
  .solution-hero-visual { width: 118%; margin-inline: -9%; }
  .scene-section h2 { font-size: 30px; }
  .scene-item, .scene-item + .scene-item { grid-template-columns: 52px 1fr 28px; gap: 14px; }
  .scene-icon { width: 48px; height: 48px; }
  .scene-icon svg { width: 43px; height: 43px; }
  .scene-item h3 { font-size: 21px; }
  .section-heading h2, .transfer-heading h2 { font-size: 34px; line-height: 1.24; }
  .section-heading h2 br, .transfer-heading h2 br { display: none; }
  .automation-flow-section, .work-transfer-section { padding-block: 62px; }
  .automation-equipment { aspect-ratio: 4 / 3; }
  .transfer-comparison { grid-template-columns: 1fr; gap: 36px; margin-top: 44px; }
  .transfer-arrow { justify-self: center; width: 54px; transform: rotate(90deg); }
  .transfer-equipment { grid-column: auto; aspect-ratio: 4 / 3; }
  .monitoring-message { align-items: flex-start; }
  .monitoring-message strong { font-size: 22px; line-height: 1.45; }
  .monitoring-band ul { grid-template-columns: 1fr 1fr; }
  .monitoring-band li { text-align: left; }
  .special-flow-list { grid-template-columns: 1fr; }
  .special-flow-list span { padding: 15px 0; text-align: left; }
  .special-flow-list span + span { border-top: 1px solid var(--line); border-left: 0; }
  .text-link { margin-top: 34px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

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