:root {
  --bg: #eef3f1;
  --surface: #ffffff;
  --ink: #101817;
  --ink-strong: #081210;
  --muted: #5c6c68;
  --faint: #86948f;
  --line: #d7e2de;
  --line-strong: #afc2bc;
  --green: #0b6258;
  --green-strong: #06463f;
  --blue: #245f8f;
  --amber: #a65f18;
  --rose: #a43737;
  --white: #ffffff;
  --shadow: 0 20px 70px rgb(8 18 16 / 14%);
  --shadow-soft: 0 10px 26px rgb(8 18 16 / 8%);
  --radius: 8px;
  color: var(--ink);
  background: var(--bg);
  font-family:
    Aptos, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei",
    ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--green) 76%, white);
  outline-offset: 3px;
}

svg {
  fill: none;
  height: 1em;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  width: 1em;
}

.site-shell {
  background:
    linear-gradient(90deg, rgb(16 24 23 / 4%) 1px, transparent 1px),
    linear-gradient(180deg, rgb(16 24 23 / 4%) 1px, transparent 1px),
    var(--bg);
  background-size: 44px 44px;
  min-height: 100vh;
  overflow: hidden;
}

.site-nav {
  align-items: center;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  left: 50%;
  max-width: 1180px;
  padding: 18px 24px;
  position: fixed;
  top: 0;
  transform: translateX(-50%);
  width: 100%;
  z-index: 20;
}

.brand-link,
.nav-links,
.button,
.hero-evidence,
.hero-evidence span,
.check-list li,
.audience-list span {
  align-items: center;
  display: inline-flex;
}

.brand-link {
  background: rgb(8 18 16 / 76%);
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: var(--radius);
  color: var(--white);
  font-size: 15px;
  font-weight: 760;
  gap: 10px;
  letter-spacing: 0;
  min-height: 48px;
  padding: 5px 12px 5px 5px;
}

.brand-mark {
  align-items: center;
  background: rgb(255 255 255 / 16%);
  border: 1px solid rgb(255 255 255 / 24%);
  border-radius: var(--radius);
  color: var(--white);
  display: inline-flex;
  font-size: 12px;
  font-weight: 800;
  height: 38px;
  justify-content: center;
  width: 38px;
}

.nav-links {
  background: rgb(8 18 16 / 86%);
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: var(--radius);
  box-shadow: 0 14px 34px rgb(0 0 0 / 18%);
  color: rgb(255 255 255 / 88%);
  gap: 4px;
  padding: 5px;
}

#download {
  scroll-margin-top: 92px;
}

.nav-links a {
  border-radius: 6px;
  font-size: 13px;
  min-height: 34px;
  padding: 8px 11px;
  white-space: nowrap;
}

.nav-links a:hover {
  background: rgb(255 255 255 / 12%);
  color: var(--white);
}

.nav-links .nav-download {
  align-items: center;
  background: var(--white);
  color: var(--green-strong);
  display: inline-flex;
  gap: 7px;
}

.hero {
  color: var(--white);
  display: grid;
  min-height: 84svh;
  overflow: hidden;
  padding: 118px 24px 84px;
  place-items: end start;
  position: relative;
}

.hero-media {
  height: 100%;
  inset: 0;
  object-fit: cover;
  object-position: center top;
  position: absolute;
  width: 100%;
}

.hero-scrim {
  background:
    linear-gradient(90deg, rgb(6 18 17 / 95%) 0%, rgb(6 18 17 / 82%) 34%, rgb(6 18 17 / 34%) 72%),
    linear-gradient(180deg, rgb(6 18 17 / 26%) 0%, rgb(6 18 17 / 70%) 100%);
  inset: 0;
  position: absolute;
}

.hero-copy {
  margin: 0 auto;
  max-width: 1180px;
  position: relative;
  width: 100%;
  z-index: 2;
}

.eyebrow,
.section-kicker {
  display: block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  margin: 0;
  text-transform: uppercase;
}

.eyebrow {
  color: #b4ddd5;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(58px, 9vw, 126px);
  font-weight: 820;
  letter-spacing: 0;
  line-height: 0.9;
  margin: 0;
}

.lead {
  color: rgb(255 255 255 / 86%);
  font-size: clamp(18px, 2vw, 26px);
  line-height: 1.55;
  margin: 28px 0 0;
  max-width: 720px;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  border-radius: var(--radius);
  font-weight: 760;
  gap: 9px;
  justify-content: center;
  min-height: 46px;
  padding: 12px 17px;
  transition:
    background 140ms ease,
    border-color 140ms ease,
    transform 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: var(--green);
  border: 1px solid color-mix(in srgb, var(--green) 72%, white);
  color: var(--white);
}

.button.primary:hover {
  background: var(--green-strong);
}

.button.secondary {
  background: rgb(255 255 255 / 12%);
  border: 1px solid rgb(255 255 255 / 26%);
  color: var(--white);
}

.button.secondary:hover {
  background: rgb(255 255 255 / 18%);
}

.hero-evidence {
  color: rgb(255 255 255 / 84%);
  flex-wrap: wrap;
  gap: 8px;
  left: auto;
  margin-top: 22px;
  max-width: 1180px;
  position: relative;
  transform: none;
  width: 100%;
  z-index: 2;
}

.hero-evidence span {
  background: rgb(255 255 255 / 12%);
  border: 1px solid rgb(255 255 255 / 18%);
  border-radius: var(--radius);
  gap: 8px;
  min-height: 36px;
  padding: 8px 11px;
}

.hero-evidence svg {
  color: #b4ddd5;
}

.section {
  margin: 0 auto;
  max-width: 1180px;
  padding: 92px 24px 0;
}

.section-kicker {
  color: var(--amber);
  margin-bottom: 12px;
}

.section h2,
.download-band h2 {
  color: var(--ink-strong);
  font-size: clamp(30px, 4vw, 50px);
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.05;
  margin: 0;
  text-wrap: balance;
}

.section p,
.download-band p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.72;
  margin: 0;
}

.intro {
  align-items: start;
  display: grid;
  gap: 48px;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.75fr);
}

.intro > p {
  border-left: 3px solid var(--green);
  padding-left: 24px;
}

.section-heading {
  display: grid;
  gap: 14px;
  margin-bottom: 28px;
  max-width: 760px;
}

.workflow-grid,
.feature-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.workflow-step,
.feature-block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  min-height: 242px;
  padding: 22px;
}

.workflow-step svg,
.feature-block svg {
  color: var(--green);
  font-size: 22px;
}

.workflow-step:nth-child(2) svg,
.feature-block:nth-child(2) svg {
  color: var(--blue);
}

.workflow-step:nth-child(3) svg,
.feature-block:nth-child(3) svg {
  color: var(--amber);
}

.workflow-step:nth-child(4) svg,
.feature-block:nth-child(4) svg {
  color: var(--rose);
}

.workflow-step h3,
.feature-block h3 {
  color: var(--ink-strong);
  font-size: 20px;
  font-weight: 780;
  letter-spacing: 0;
  line-height: 1.25;
  margin: 20px 0 10px;
}

.workflow-step p,
.feature-block p {
  font-size: 15px;
  line-height: 1.65;
}

.product-section {
  align-items: center;
  display: grid;
  gap: 42px;
  grid-template-columns: minmax(300px, 0.78fr) minmax(460px, 1.1fr);
}

.product-copy {
  display: grid;
  gap: 18px;
}

.check-list {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.check-list li {
  color: var(--ink);
  gap: 9px;
  line-height: 1.4;
}

.check-list svg {
  color: var(--green);
  flex: 0 0 auto;
  font-size: 17px;
}

.product-figure {
  margin: 0;
}

.product-figure img {
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
  object-fit: cover;
  object-position: left top;
  width: 100%;
}

.product-figure figcaption {
  color: var(--faint);
  font-size: 13px;
  margin-top: 10px;
}

.feature-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-block {
  min-height: 220px;
}

.audience-section {
  align-items: start;
  display: grid;
  gap: 38px;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 0.85fr);
}

.audience-list {
  display: grid;
  gap: 10px;
}

.audience-list span {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  color: var(--ink);
  gap: 10px;
  min-height: 54px;
  padding: 14px 16px;
}

.audience-list svg {
  color: var(--green);
  flex: 0 0 auto;
  font-size: 16px;
}

.trust-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.trust-block {
  background: #071816;
  border: 1px solid #183a35;
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  min-height: 210px;
  padding: 22px;
}

.trust-block h3 {
  color: var(--white);
  font-size: 20px;
  font-weight: 780;
  letter-spacing: 0;
  margin: 0 0 12px;
}

.trust-block p {
  color: rgb(255 255 255 / 72%);
  font-size: 15px;
  line-height: 1.68;
}

.trust-block:nth-child(2) {
  background: #102337;
  border-color: #244563;
}

.trust-block:nth-child(3) {
  background: #2b2114;
  border-color: #604222;
}

.trust-block:nth-child(4) {
  background: #2b1717;
  border-color: #633131;
}

.release-section {
  align-items: start;
  display: grid;
  gap: 34px;
  grid-template-columns: minmax(0, 0.82fr) minmax(380px, 0.9fr);
}

.release-copy {
  display: grid;
  gap: 18px;
}

.release-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  display: grid;
  gap: 18px;
  padding: 22px;
}

.release-panel dl {
  display: grid;
  gap: 0;
  margin: 0;
}

.release-panel dl div {
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 12px;
  grid-template-columns: 118px minmax(0, 1fr);
  min-height: 48px;
  padding: 12px 0;
}

.release-panel dl div:first-child {
  padding-top: 0;
}

.release-panel dt {
  color: var(--faint);
  font-size: 13px;
  font-weight: 760;
}

.release-panel dd {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  margin: 0;
  overflow-wrap: anywhere;
}

.release-panel .button {
  justify-self: start;
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-list details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.faq-list summary {
  color: var(--ink-strong);
  cursor: pointer;
  font-size: 18px;
  font-weight: 780;
  list-style: none;
  padding: 18px 20px;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  color: var(--green);
  content: "+";
  float: right;
  font-weight: 800;
  margin-left: 16px;
}

.faq-list details[open] summary::after {
  content: "-";
}

.faq-list p {
  border-top: 1px solid var(--line);
  font-size: 16px;
  padding: 16px 20px 18px;
}

.download-band {
  align-items: center;
  background: #071816;
  color: var(--white);
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(0, 1fr) auto;
  margin: 96px auto 0;
  max-width: 1180px;
  padding: 44px 24px;
}

.download-band h2 {
  color: var(--white);
}

.download-band p {
  color: rgb(255 255 255 / 74%);
  margin-top: 12px;
  max-width: 660px;
}

.download-band .section-kicker {
  color: #b4ddd5;
}

@media (max-width: 1020px) {
  .workflow-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro,
  .product-section,
  .release-section,
  .audience-section {
    grid-template-columns: 1fr;
  }

  .product-section {
    gap: 28px;
  }

  .trust-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .site-nav {
    padding: 12px;
  }

  .brand-link span:last-child {
    display: none;
  }

  .brand-link {
    min-height: 42px;
    padding: 4px;
  }

  .nav-links {
    background: rgb(8 18 16 / 90%);
    gap: 0;
    max-width: calc(100vw - 74px);
    overflow-x: auto;
  }

  #download {
    scroll-margin-top: 74px;
  }

  .nav-links a {
    font-size: 12px;
    padding: 8px 9px;
  }

  .hero {
    align-items: stretch;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 82svh;
    padding: 92px 16px 88px;
  }

  .hero-scrim {
    background:
      linear-gradient(90deg, rgb(6 18 17 / 92%) 0%, rgb(6 18 17 / 76%) 64%, rgb(6 18 17 / 46%) 100%),
      linear-gradient(180deg, rgb(6 18 17 / 24%) 0%, rgb(6 18 17 / 78%) 100%);
  }

  .hero h1 {
    font-size: clamp(52px, 19vw, 82px);
  }

  .lead {
    font-size: 17px;
    line-height: 1.6;
    margin-top: 22px;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 26px;
  }

  .button {
    min-height: 44px;
    padding: 11px 14px;
    width: 100%;
  }

  .hero-evidence {
    gap: 6px;
    margin-top: 16px;
  }

  .hero-evidence span {
    font-size: 12px;
    min-height: 32px;
    padding: 7px 9px;
  }

  .section {
    padding: 72px 16px 0;
  }

  .intro {
    gap: 24px;
  }

  .intro > p {
    padding-left: 16px;
  }

  .workflow-grid,
  .feature-grid,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .workflow-step,
  .feature-block,
  .trust-block {
    min-height: 0;
    padding: 18px;
  }

  .release-panel {
    padding: 18px;
  }

  .release-panel dl div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .release-panel .button {
    justify-self: stretch;
  }

  .faq-list summary {
    font-size: 16px;
    padding: 16px;
  }

  .faq-list p {
    font-size: 15px;
    padding: 14px 16px 16px;
  }

  .product-figure img {
    aspect-ratio: 4 / 3;
  }

  .download-band {
    grid-template-columns: 1fr;
    margin-top: 72px;
    padding: 36px 16px;
  }
}

@media (max-width: 430px) {
  .nav-links a:not(.nav-download) {
    display: none;
  }

  .nav-links {
    max-width: none;
  }

  .hero {
    min-height: 83svh;
  }

  .hero-evidence span {
    flex: 1 1 100%;
  }
}