:root {
  --ink: #10251e;
  --ink-soft: #30463e;
  --muted: #687a72;
  --surface: #ffffff;
  --surface-soft: #f4f7f4;
  --surface-deep: #e9f0eb;
  --line: #d9e3dc;
  --green: #3f8769;
  --green-dark: #2f6c53;
  --green-light: #bfe9d4;
  --mint: #66d2a5;
  --yellow: #f3d54e;
  --purple: #6e62b5;
  --shadow: 0 26px 70px rgba(16, 37, 30, 0.14);
  --shadow-soft: 0 14px 40px rgba(16, 37, 30, 0.08);
  --radius-xl: 32px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface-soft);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}
a { color: inherit; }
button, input, textarea { font: inherit; }
::selection { background: var(--green-light); color: var(--ink); }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 999;
  transform: translateY(-150%);
  background: var(--ink);
  color: white;
  padding: 10px 14px;
  border-radius: 10px;
}
.skip-link:focus { transform: translateY(0); }

.container {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(217, 227, 220, 0.8);
  background: rgba(244, 247, 244, 0.88);
  backdrop-filter: blur(18px);
}
.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 1.15rem;
  font-weight: 760;
  letter-spacing: -0.02em;
}
.brand img { width: 38px; height: 38px; }
.brand-sub { color: var(--muted); font-weight: 520; }
.desktop-nav { display: flex; align-items: center; gap: 28px; }
.desktop-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.95rem;
}
.desktop-nav a:hover { color: var(--green-dark); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.lang-toggle, .menu-button {
  min-width: 46px;
  height: 42px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 12px;
  cursor: pointer;
  font-weight: 700;
}
.lang-toggle:hover, .menu-button:hover { border-color: var(--green); }
.menu-button { display: none; min-width: 42px; }
.mobile-menu {
  border-top: 1px solid var(--line);
  padding: 12px 20px 18px;
  background: var(--surface-soft);
}
.mobile-menu nav { display: grid; gap: 4px; }
.mobile-menu a {
  padding: 11px 8px;
  text-decoration: none;
  font-weight: 650;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 86px 0 64px;
}
.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
  pointer-events: none;
}
.hero::before {
  width: 420px;
  height: 420px;
  top: -210px;
  right: -100px;
  background: radial-gradient(circle at center, rgba(102, 210, 165, 0.22), rgba(102, 210, 165, 0));
}
.hero::after {
  width: 300px;
  height: 300px;
  left: -140px;
  bottom: -160px;
  background: radial-gradient(circle at center, rgba(243, 213, 78, 0.18), rgba(243, 213, 78, 0));
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.18fr);
  gap: 68px;
  align-items: center;
}
.eyebrow, .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: var(--green-dark);
  font-weight: 760;
  letter-spacing: 0.055em;
  text-transform: uppercase;
  font-size: 0.78rem;
}
.eyebrow::before, .section-kicker::before {
  content: "";
  width: 24px;
  height: 3px;
  border-radius: 999px;
  background: var(--yellow);
}
.hero h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(3.3rem, 7.3vw, 6.7rem);
  line-height: 0.96;
  letter-spacing: -0.07em;
}
.hero h1 span { display: block; }
.hero h1 span:last-child { color: var(--green); }
.hero-copy {
  margin: 28px 0 0;
  max-width: 650px;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--ink-soft);
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 52px;
  padding: 0 21px;
  border-radius: 14px;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 760;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--ink); box-shadow: 0 12px 30px rgba(16, 37, 30, 0.18); }
.button-primary:hover { background: #1a342a; }
.button-secondary { background: var(--surface); border-color: var(--line); }
.button-secondary:hover { border-color: var(--green); box-shadow: var(--shadow-soft); }
.button.is-disabled { cursor: default; opacity: 0.9; }
.button.is-disabled:hover { transform: none; }
.button svg { width: 18px; height: 18px; }

.hero-visual { position: relative; }
.browser-frame {
  position: relative;
  padding: 11px;
  background: #dce5df;
  border: 1px solid rgba(16, 37, 30, 0.12);
  border-radius: 28px;
  box-shadow: var(--shadow);
  transform: rotate(1.2deg);
}
.browser-top {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 10px;
}
.browser-dot { width: 9px; height: 9px; border-radius: 50%; background: #93a59b; }
.browser-address {
  width: 50%;
  height: 12px;
  margin-left: 7px;
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
}
.screenshot-wrap {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  background: #111;
  aspect-ratio: 16 / 10;
}
.screenshot-wrap img { width: 100%; height: 100%; object-fit: cover; }
.brand-patch {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: #10251e;
  font-weight: 820;
  letter-spacing: -0.04em;
  box-shadow: 0 0 0 8px #fff;
}
.brand-patch.dark { background: #151d19; color: #fff; box-shadow: 0 0 0 8px #151d19; }
.hero-patch { top: 8.6%; left: 51.9%; font-size: clamp(0.7rem, 1.15vw, 1rem); }
.hero-patch::after { content: ""; position: absolute; left: 100%; top: -8px; width: 68px; height: 38px; background: white; z-index: -1; }
.floating-note {
  position: absolute;
  z-index: 4;
  max-width: 245px;
  padding: 15px 17px;
  border-radius: 16px;
  background: rgba(255,255,255,0.94);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(16,37,30,0.08);
  font-weight: 720;
}
.floating-note span { display: block; margin-top: 2px; color: var(--muted); font-size: 0.84rem; font-weight: 550; }
.note-one { left: -38px; bottom: 26px; }
.note-two { right: -28px; top: 48px; }
.note-icon {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  margin-bottom: 8px;
  border-radius: 9px;
  background: var(--green-light);
}

.trust-strip { padding: 12px 0 78px; }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}
.trust-item { padding: 25px 28px; }
.trust-item + .trust-item { border-left: 1px solid var(--line); }
.trust-item strong { display: block; margin-bottom: 5px; font-size: 1rem; }
.trust-item p { margin: 0; color: var(--muted); font-size: 0.94rem; }

.section { padding: 96px 0; }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head h2, .privacy-copy h2, .language-copy h2, .final-cta h2, .legal-hero h1 {
  margin: 0;
  font-size: clamp(2.35rem, 4.8vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.055em;
}
.section-head p:not(.section-kicker) { margin: 20px 0 0; color: var(--ink-soft); font-size: 1.12rem; }

.feature-stack { display: grid; gap: 34px; }
.feature-row {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  align-items: center;
  gap: 56px;
  min-height: 520px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}
.feature-row:nth-child(even) { grid-template-columns: 1.14fr 0.86fr; }
.feature-row:nth-child(even) .feature-copy { order: 2; }
.feature-copy h3 { margin: 0; font-size: clamp(1.9rem, 3.3vw, 3rem); line-height: 1.08; letter-spacing: -0.045em; }
.feature-copy p { margin: 18px 0 0; color: var(--ink-soft); font-size: 1.03rem; }
.feature-number {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 20px;
  border: 1px solid var(--green-light);
  border-radius: 13px;
  color: var(--green-dark);
  background: #eff9f3;
  font-weight: 820;
}
.product-shot {
  position: relative;
  overflow: hidden;
  border: 1px solid #cbd7cf;
  border-radius: 20px;
  background: #eef3ef;
  box-shadow: 0 22px 55px rgba(16, 37, 30, 0.16);
}
.product-shot img { width: 100%; }
.product-shot figcaption { padding: 12px 15px 14px; color: var(--muted); font-size: 0.85rem; background: white; }
.patch-review { top: 2.9%; left: 2.2%; font-size: clamp(0.7rem, 1vw, 1rem); }
.patch-cards { top: 2.9%; left: 2.2%; font-size: clamp(0.7rem, 1vw, 1rem); }
.patch-reader { top: 3.6%; left: 3.1%; font-size: clamp(0.65rem, 0.95vw, 0.9rem); }
.patch-lookup { top: 8.4%; left: 52%; font-size: clamp(0.55rem, 0.78vw, 0.82rem); }
.patch-lookup::after { content: ""; position: absolute; left: 100%; top: -8px; width: 60px; height: 34px; background: white; z-index: -1; }

.workflow { background: var(--ink); color: white; }
.workflow .section-kicker { color: var(--green-light); }
.workflow .section-head p:not(.section-kicker) { color: #c4d1ca; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step-card {
  min-height: 260px;
  padding: 30px;
  border: 1px solid rgba(255,255,255,0.13);
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.055);
}
.step-index { color: var(--yellow); font-weight: 800; }
.step-card h3 { margin: 42px 0 10px; font-size: 1.45rem; }
.step-card p { margin: 0; color: #c4d1ca; }

.privacy-section { padding: 100px 0; }
.privacy-panel {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 54px;
  align-items: center;
  padding: 54px;
  border-radius: var(--radius-xl);
  color: white;
  background: linear-gradient(135deg, #2f6c53 0%, #183b2e 100%);
  box-shadow: var(--shadow);
}
.privacy-copy .section-kicker { color: #d5f5e4; }
.privacy-copy > p:not(.section-kicker) { color: #d8e9df; font-size: 1.05rem; }
.privacy-list { display: grid; gap: 14px; margin-top: 24px; }
.privacy-point { display: flex; gap: 12px; align-items: flex-start; }
.check {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  border-radius: 50%;
  color: var(--ink);
  background: var(--yellow);
  font-size: 0.8rem;
  font-weight: 900;
}
.privacy-visual {
  min-height: 390px;
  display: grid;
  place-items: center;
  position: relative;
}
.privacy-orbit {
  position: relative;
  width: min(100%, 390px);
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
}
.privacy-orbit::before, .privacy-orbit::after {
  content: "";
  position: absolute;
  inset: 13%;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 50%;
}
.privacy-orbit::after { inset: 28%; }
.shield-card {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: 155px;
  height: 185px;
  display: grid;
  place-items: center;
  border-radius: 78px 78px 52px 52px;
  background: #f6fbf8;
  color: var(--green-dark);
  box-shadow: 0 25px 60px rgba(0,0,0,0.25);
}
.shield-card svg { width: 74px; height: 74px; }
.data-chip {
  position: absolute;
  padding: 9px 13px;
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: 999px;
  background: rgba(255,255,255,0.1);
  font-size: 0.82rem;
  font-weight: 700;
  backdrop-filter: blur(8px);
}
.data-chip.one { top: 11%; left: 3%; }
.data-chip.two { top: 34%; right: -2%; }
.data-chip.three { bottom: 12%; left: 9%; }
.text-link { display: inline-flex; margin-top: 24px; color: white; font-weight: 760; text-underline-offset: 5px; }

.languages { padding: 96px 0; }
.language-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 64px; align-items: center; }
.language-copy p:not(.section-kicker) { color: var(--ink-soft); font-size: 1.08rem; }
.language-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.language-pill {
  padding: 12px 17px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  box-shadow: 0 8px 20px rgba(16,37,30,0.05);
  font-weight: 700;
}
.language-pill:nth-child(3n+1) { transform: translateY(-5px); }
.language-pill:nth-child(4n) { border-color: #c8bee9; }
.language-pill:nth-child(5n) { border-color: #e9d96d; }

.faq { padding: 96px 0 112px; }
.faq-grid { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 70px; }
.faq-list { display: grid; gap: 12px; }
details {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
  padding: 0 20px;
}
summary { position: relative; cursor: pointer; padding: 19px 36px 19px 0; font-weight: 760; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  position: absolute;
  top: 17px;
  right: 2px;
  font-size: 1.4rem;
  color: var(--green-dark);
}
details[open] summary::after { content: "–"; }
details p { margin: 0; padding: 0 26px 20px 0; color: var(--ink-soft); }

.final-section { padding: 0 0 90px; }
.final-cta {
  position: relative;
  overflow: hidden;
  padding: 64px;
  border-radius: var(--radius-xl);
  background: var(--yellow);
}
.final-cta::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  right: -120px;
  bottom: -220px;
  border-radius: 50%;
  border: 70px solid rgba(16,37,30,0.1);
}
.final-cta p { max-width: 640px; margin: 18px 0 0; color: #3e422c; font-size: 1.08rem; }
.final-cta .button { margin-top: 28px; position: relative; z-index: 2; }

.site-footer { border-top: 1px solid var(--line); padding: 52px 0 26px; background: #eef3ef; }
.footer-grid { display: grid; grid-template-columns: 1.55fr repeat(3, 0.7fr); gap: 54px; }
.footer-brand p { max-width: 350px; color: var(--muted); }
.footer-column strong { display: block; margin-bottom: 12px; }
.footer-column a { display: block; width: fit-content; margin: 8px 0; color: var(--ink-soft); text-decoration: none; }
.footer-column a:hover { text-decoration: underline; text-underline-offset: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 46px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}
.status-pill { display: inline-flex; align-items: center; gap: 7px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }

/* Legal and support pages */
.legal-main { padding-bottom: 90px; }
.legal-hero { padding: 76px 0 42px; }
.legal-hero p { max-width: 700px; color: var(--ink-soft); font-size: 1.06rem; }
.legal-layout { display: grid; grid-template-columns: 260px minmax(0, 760px); gap: 70px; align-items: start; }
.legal-aside { position: sticky; top: 102px; }
.legal-aside a { display: block; padding: 8px 0; color: var(--muted); text-decoration: none; }
.legal-aside a:hover { color: var(--green-dark); }
.legal-card { padding: 38px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: var(--shadow-soft); }
.legal-card section + section { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--line); }
.legal-card h2 { margin: 0 0 13px; font-size: 1.55rem; letter-spacing: -0.025em; }
.legal-card h3 { margin: 24px 0 8px; }
.legal-card p, .legal-card li { color: var(--ink-soft); }
.legal-card ul { padding-left: 20px; }
.legal-meta { display: inline-flex; padding: 7px 10px; border-radius: 9px; background: var(--surface-deep); color: var(--green-dark); font-size: 0.85rem; font-weight: 760; }
.support-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.support-card { padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.support-card h2 { margin-top: 0; font-size: 1.25rem; }
.support-card p { color: var(--ink-soft); }
.support-card code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; padding: 2px 6px; border-radius: 6px; background: #edf2ee; }
.notice { padding: 17px 19px; border-left: 4px solid var(--yellow); border-radius: 12px; background: #fff9d9; color: #4f4c28; }

.js [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 650ms ease, transform 650ms ease; }
.js [data-reveal].is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
}

@media (max-width: 1040px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy-block { max-width: 780px; }
  .hero-visual { max-width: 880px; }
  .feature-row, .feature-row:nth-child(even) { grid-template-columns: 1fr; min-height: auto; }
  .feature-row:nth-child(even) .feature-copy { order: initial; }
  .privacy-panel, .language-grid { grid-template-columns: 1fr; }
  .privacy-visual { min-height: 330px; }
  .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); gap: 28px; }
}

@media (max-width: 780px) {
  .desktop-nav { display: none; }
  .menu-button { display: inline-grid; place-items: center; }
  .hero { padding-top: 58px; }
  .hero h1 { font-size: clamp(3rem, 15vw, 5.4rem); }
  .hero-grid { gap: 48px; }
  .note-one { left: 8px; bottom: -34px; }
  .note-two { right: 7px; top: 20px; }
  .floating-note { max-width: 210px; font-size: 0.88rem; }
  .trust-strip { padding-top: 54px; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-item + .trust-item { border-left: 0; border-top: 1px solid var(--line); }
  .section { padding: 76px 0; }
  .feature-row { gap: 32px; padding: 26px; }
  .steps { grid-template-columns: 1fr; }
  .step-card { min-height: 200px; }
  .privacy-panel { padding: 34px 26px; }
  .privacy-visual { min-height: 300px; }
  .privacy-orbit { width: 300px; }
  .faq-grid { grid-template-columns: 1fr; gap: 30px; }
  .final-cta { padding: 42px 28px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .legal-layout { grid-template-columns: 1fr; gap: 24px; }
  .legal-aside { position: static; display: flex; flex-wrap: wrap; gap: 4px 18px; }
  .support-grid { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .container { width: min(calc(100% - 24px), var(--max-width)); }
  .header-inner { min-height: 68px; }
  .brand-sub { display: none; }
  .hero { padding-top: 44px; }
  .hero h1 { letter-spacing: -0.075em; }
  .hero-copy { font-size: 1rem; }
  .button { width: 100%; }
  .browser-frame { padding: 7px; border-radius: 20px; }
  .screenshot-wrap { border-radius: 14px; }
  .floating-note { display: none; }
  .trust-strip { padding-top: 20px; }
  .section-head { margin-bottom: 34px; }
  .feature-row { padding: 20px; border-radius: 24px; }
  .product-shot figcaption { font-size: 0.78rem; }
  .privacy-section { padding: 76px 0; }
  .privacy-orbit { width: 250px; }
  .shield-card { width: 115px; height: 140px; }
  .data-chip { font-size: 0.7rem; }
  .language-grid { gap: 36px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
  .legal-card { padding: 24px 20px; }
}