:root {
  --color-bg: #f4f8f3;
  --color-surface: #fbfcf9;
  --color-text: #213e33;
  --color-text-secondary: #62756a;
  --color-border: #dce5db;
  --color-accent: #39745a;
  --font-sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --track-rows: 11;
  --track-font-a: 30px;
  --track-font-b: 22px;
  --track-font-c: 17px;
  --track-speed-a: 17;
  --track-speed-b: 11;
  --track-speed-c: 7;
  --track-opacity-a: .54;
  --track-opacity-b: .39;
  --track-opacity-c: .28;
  --track-item-gap: 104px;
  --track-segment-padding: 0px;
  --module-enter-y: 16px;
  --module-enter-duration: 460ms;
  --module-enter-stagger: 45ms;
  --content-max-width: 1160px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font: 16px/1.6 var(--font-sans);
}
button, input { font: inherit; }
button { color: inherit; touch-action: manipulation; }
svg { display: block; }
::selection { background: #d6e6d6; color: #213e33; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 5px; }
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transform: translateY(-160%);
}
.skip-link:focus { transform: none; }

.hero {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 100vh;
  min-height: 100svh;
  padding: 48px 24px;
  overflow: hidden;
  isolation: isolate;
}
.bg-flow {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  contain: strict;
  mask-image: linear-gradient(transparent, #000 13%, #000 82%, transparent 100%);
}
.bg-track {
  position: absolute;
  left: 0;
  top: var(--track-top, 0);
  display: flex;
  align-items: center;
  width: max-content;
  white-space: nowrap;
  font-size: var(--track-font, 22px);
  line-height: 1.5;
  letter-spacing: .025em;
  color: #527662;
  opacity: var(--track-opacity, .3);
  animation: track-scroll var(--track-duration, 60s) linear var(--track-delay, 0s) infinite;
}
.bg-track[data-direction="rtl"] { animation-direction: reverse; }
.segment { display: inline-flex; align-items: center; }
.qa-item {
  display: inline-flex;
  align-items: baseline;
  gap: 18px;
  padding-right: var(--track-item-gap);
}
.qa-q { font-weight: 500; }
.qa-sep { opacity: .45; font-weight: 300; }
.qa-a { color: #769081; font-weight: 400; }
@keyframes track-scroll {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}
.bg-flow.is-paused .bg-track { animation-play-state: paused; }
.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse 43% 31% at 50% 48%,
    #f4f8f3 4%, rgba(244, 248, 243, .91) 29%,
    rgba(244, 248, 243, .48) 59%, rgba(244, 248, 243, 0) 100%);
}
.hero-fg { position: relative; z-index: 2; text-align: center; }
.hero-title { margin: 0; font-weight: 600; }
.hero-opening {
  display: block;
  margin-bottom: 16px;
  font-size: clamp(30px, 3.2vw, 46px);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: .05em;
}
.hero-statement {
  display: block;
  font-size: clamp(54px, 6.4vw, 92px);
  line-height: 1.25;
  letter-spacing: -.035em;
  white-space: nowrap;
}
.hero-name {
  margin: 24px 0 0;
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: .18em;
}
.modules { position: relative; z-index: 3; padding: 42px 40px 100px; scroll-margin-top: 24px; }
.modules-inner { max-width: var(--content-max-width); margin: 0 auto; }
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}
.section-title { margin: 0; font-size: 27px; font-weight: 500; letter-spacing: .02em; }
.section-hint { margin: 0; color: var(--color-text-secondary); font-size: 13px; }
.module-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 18px; padding: 0; margin: 0; list-style: none; }
.module-item { grid-column: span 2; }
.module-item:nth-last-child(-n + 2) { grid-column: span 3; }
.js .module-item {
  opacity: 0;
  transform: translateY(var(--module-enter-y));
  transition: opacity var(--module-enter-duration) ease-out, transform var(--module-enter-duration) ease-out;
  transition-delay: var(--enter-delay, 0ms);
}
.js .module-item.is-visible { opacity: 1; transform: none; }
.module-card {
  --card-tint: #edf3e9;
  --tilt-dir: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
  min-height: 196px;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: var(--color-surface);
  text-align: left;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: transform 260ms cubic-bezier(.2,.7,.3,1), box-shadow 260ms ease, border-color 200ms ease, background-color 200ms ease;
}
.module-card[data-tilt="-1"] { --tilt-dir: -1; }
.module-card[data-tilt="1"] { --tilt-dir: 1; }
.module-art {
  width: 40px;
  height: 40px;
  margin-bottom: 28px;
  color: var(--color-accent);
  transition: transform 260ms cubic-bezier(.2,.7,.3,1);
}
.module-art-brand { overflow: visible; }
.module-arrow { position: absolute; top: 26px; right: 25px; width: 20px; height: 20px; color: var(--color-text-secondary); transition: color 200ms ease, transform 200ms ease; }
.module-name { font-size: 25px; font-weight: 600; line-height: 1.4; }
.module-description { margin-top: 9px; font-size: 13px; color: var(--color-text-secondary); line-height: 1.8; }
@media (hover: hover) and (pointer: fine) {
  .module-card:hover { transform: translateY(-5px) rotate(calc(var(--tilt-dir) * .65deg)) scale(1.012); border-color: #b8cdba; background: #fff; box-shadow: 0 14px 30px -14px #57715b35; }
  .module-card:hover .module-art { transform: rotate(calc(var(--tilt-dir) * 7deg)) scale(1.06); }
  .module-card:hover .module-arrow { color: var(--color-accent); transform: translateX(3px); }
}
.module-card:active { transform: scale(.99); }
.module-card[aria-pressed="true"] { border-color: var(--color-accent); background: var(--card-tint); }
.module-feedback { margin: 24px 0 0; padding: 12px 0; color: var(--color-text-secondary); font-size: 14px; }
.module-feedback:empty { margin: 0; padding: 0; }
.footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 20px;
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 25px 0 40px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 12px;
}
.motion-setting { display: inline-flex; align-items: center; gap: 8px; flex-shrink: 0; min-height: 44px; cursor: pointer; }
.motion-setting input { width: 14px; height: 14px; margin: 0; accent-color: var(--color-accent); cursor: pointer; }
.motion-setting:has(input:disabled) { cursor: default; }

@media (max-width: 1240px) {
  .footer { margin-inline: 40px; }
  .module-card { padding: 22px; }
}
@media (max-width: 900px) {
  .module-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .module-item, .module-item:nth-last-child(-n + 2) { grid-column: auto; }
  .module-item:first-child { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
  :root {
    --track-rows: 9;
    --track-font-a: 23px;
    --track-font-b: 18px;
    --track-font-c: 14px;
    --track-speed-a: 12;
    --track-speed-b: 8;
    --track-speed-c: 5;
    --track-item-gap: 68px;
    --track-opacity-a: .48;
    --track-opacity-b: .34;
    --track-opacity-c: .24;
  }
  .hero { padding: 40px 16px; }
  .hero-opening { font-size: clamp(23px, 6vw, 29px); margin-bottom: 18px; }
  .hero-statement { font-size: clamp(36px, 10vw, 54px); letter-spacing: -.035em; }
  .hero-name { margin-top: 22px; font-size: 14px; }
  .hero-scrim { background: radial-gradient(ellipse 58% 25% at 50% 48%, #f4f8f3 4%, rgba(244,248,243,.9) 31%, rgba(244,248,243,.4) 60%, rgba(244,248,243,0) 100%); }
  .modules { padding: 30px 20px 64px; }
  .section-heading { display: block; margin-bottom: 24px; }
  .section-title { font-size: 24px; }
  .section-hint { margin-top: 8px; font-size: 12px; }
  .module-grid { gap: 12px; }
  .module-card { min-height: 184px; padding: 18px 16px; border-radius: 13px; }
  .module-art { width: 36px; height: 36px; margin-bottom: 24px; }
  .module-arrow { top: 20px; right: 16px; width: 18px; height: 18px; }
  .module-name { font-size: 22px; }
  .module-description { font-size: 12px; }
  .footer { margin-inline: 20px; padding: 20px 0 28px; flex-wrap: wrap; gap: 8px; font-size: 12px; }
}
@media (max-height: 500px) {
  :root {
    --track-rows: 7;
    --track-font-a: 22px;
    --track-font-b: 18px;
    --track-font-c: 14px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .bg-track { animation: none !important; }
  .js .module-item { opacity: 1 !important; transform: none !important; transition: none !important; }
  .module-card, .module-art, .module-arrow { transition: none !important; }
  .module-card:hover, .module-card:active, .module-card:hover .module-arrow, .module-card:hover .module-art { transform: none; }
}