:root {
  --paper-light: #fdfbf5;
  --paper: #f7f1e3;
  --paper-dark: #ede2c7;
  --paper-shadow: #d8c39c;
  --ink: #3d2f1c;
  --ink-soft: #5c4a30;
  --ink-faint: #8c7a5a;
  --seal-red: #8c2f24;
  --seal-red-dark: #6c2119;
  --gold: #a3762c;
  --gold-bright: #c99a44;
  --line: rgba(61, 47, 28, 0.16);
  --max-width: 1160px;
  --radius: 6px;
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: light;
  background-color: var(--paper);
}

body {
  margin: 0;
  font-family: var(--serif);
  color: var(--ink);
  background-color: var(--paper);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  max-width: 100%;
  display: block;
}

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  font-weight: 700;
  margin: 0;
  color: var(--ink);
}

p {
  margin: 0;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.paper-texture {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse at 15% 20%, rgba(255, 253, 246, 0.65), transparent 45%),
    radial-gradient(ellipse at 85% 10%, rgba(255, 253, 246, 0.5), transparent 40%),
    radial-gradient(ellipse at 50% 100%, rgba(120, 92, 50, 0.12), transparent 55%),
    radial-gradient(ellipse at 0% 100%, rgba(120, 92, 50, 0.09), transparent 45%);
}

.paper-texture::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='matrix' values='0 0 0 0 0.24  0 0 0 0 0.18  0 0 0 0 0.09  0 0 0 0.5 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  opacity: 0.15;
  mix-blend-mode: multiply;
}

.section-alt::before,
.section-alt::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 26px;
  background: var(--paper-light);
  pointer-events: none;
  clip-path: polygon(
    0% 100%, 2.5% 55%, 5% 92%, 8% 38%, 11% 78%, 14% 22%, 17.5% 62%, 20% 12%,
    23% 82%, 26% 45%, 29% 68%, 32% 18%, 35.5% 88%, 38% 32%, 41% 72%, 44% 15%,
    47% 58%, 50% 95%, 53% 28%, 56.5% 70%, 59% 42%, 62% 85%, 65% 20%, 68% 60%,
    71% 10%, 74% 75%, 77% 35%, 80% 90%, 83% 25%, 86.5% 65%, 89% 48%, 92% 80%,
    95% 30%, 100% 100%
  );
}

.section-alt::before {
  top: -24px;
}

.section-alt::after {
  bottom: -24px;
  transform: rotate(180deg);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(180deg, var(--paper-light) 0%, var(--paper) 100%);
  border-bottom: 2px solid var(--gold);
  box-shadow: 0 6px 18px -10px rgba(61, 47, 28, 0.55);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  gap: clamp(10px, 1.6vw, 16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
  min-width: 0;
}

.brand-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  flex-shrink: 1;
}

.brand-seal {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.35);
  flex-shrink: 0;
}

.brand-seal img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1vw, 16px);
  flex-wrap: nowrap;
  flex-shrink: 1;
  min-width: 0;
}

.nav-links a {
  position: relative;
  font-size: clamp(0.84rem, 0.6vw + 0.68rem, 0.98rem);
  color: var(--ink-soft);
  padding: 4px 2px;
  white-space: nowrap;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--seal-red);
  transition: right 0.25s ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  right: 0;
}

.nav-links a.active {
  color: var(--seal-red-dark);
  font-weight: 700;
}

.nav-links a.active::after {
  right: 0;
}

.lang-switch {
  position: relative;
  flex-shrink: 0;
}

.lang-switch-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.25);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.9rem;
  white-space: nowrap;
  cursor: pointer;
  color: var(--ink-soft);
  font-family: var(--serif);
}

.lang-switch-btn::after {
  content: "▾";
  font-size: 0.7rem;
}

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 24px -8px rgba(61, 47, 28, 0.45);
  min-width: 150px;
  padding: 6px;
  display: none;
  z-index: 60;
}

.lang-switch.open .lang-menu {
  display: block;
}

.lang-menu a {
  display: flex;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: 4px;
  font-size: 0.92rem;
}

.lang-menu a:hover {
  background: rgba(140, 47, 36, 0.1);
}

.lang-menu a.current {
  color: var(--seal-red);
  font-weight: 700;
}

.nav-toggle {
  display: none;
  flex-shrink: 0;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  display: block;
}

/* -------------------------------------------------------------------------
   Hero
   ------------------------------------------------------------------------- */

.hero {
  position: relative;
  padding: 76px 0 120px;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -80px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(163, 118, 44, 0.18), transparent 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--seal-red);
  border: 1px solid var(--seal-red);
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 22px;
}

.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--seal-red);
}

.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.3rem);
  line-height: 1.28;
  margin-bottom: 20px;
}

.hero h1 em {
  font-style: normal;
  color: var(--seal-red);
  position: relative;
}

.hero-lede {
  font-size: 1.08rem;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 46ch;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.btn-seal {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: radial-gradient(circle at 35% 30%, var(--gold-bright), var(--seal-red) 55%, var(--seal-red-dark) 100%);
  color: #f8ecd2;
  font-size: 1.02rem;
  font-weight: 700;
  padding: 15px 30px;
  border-radius: 40px;
  box-shadow: 0 10px 22px -8px rgba(108, 33, 25, 0.65), inset 0 0 10px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(0, 0, 0, 0.15);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-seal:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px -8px rgba(108, 33, 25, 0.75), inset 0 0 10px rgba(0, 0, 0, 0.25);
}

.btn-ghost {
  font-size: 0.98rem;
  color: var(--ink-soft);
  border-bottom: 1px dashed var(--ink-faint);
  padding-bottom: 2px;
}

.btn-ghost:hover {
  color: var(--seal-red);
  border-color: var(--seal-red);
}

.platform-strip {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.platform-strip-label {
  font-size: 0.82rem;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  margin-right: 4px;
}

.platform-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 7px 16px 7px 12px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink-soft);
  transition: transform 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.platform-pill svg {
  width: 17px;
  height: 17px;
  fill: var(--seal-red);
  flex-shrink: 0;
}

.platform-pill:hover {
  transform: translateY(-2px);
  border-color: var(--seal-red);
  color: var(--seal-red-dark);
}

.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: 0.88rem;
  color: var(--ink-faint);
}

.trust-strip li {
  display: flex;
  align-items: center;
  gap: 7px;
}

.trust-strip li::before {
  content: "✦";
  color: var(--gold);
}

.hero-scroll {
  position: relative;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 30px 26px;
  box-shadow: 0 18px 40px -18px rgba(61, 47, 28, 0.55);
  transform: rotate(1.4deg);
}

.hero-scroll::before,
.hero-scroll::after {
  content: "";
  position: absolute;
  left: -10px;
  right: -10px;
  height: 20px;
  background: repeating-linear-gradient(90deg, var(--gold) 0 18px, var(--gold-bright) 18px 20px);
  border-radius: 10px;
}

.hero-scroll::before {
  top: -12px;
}

.hero-scroll::after {
  bottom: -12px;
}

.hero-scroll h3 {
  font-size: 1.05rem;
  margin-bottom: 18px;
  color: var(--seal-red-dark);
  text-align: center;
  letter-spacing: 0.05em;
}

.route {
  position: relative;
  padding-left: 6px;
}

.route::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 22px;
  bottom: 22px;
  border-left: 2px dashed var(--gold);
}

.route-step {
  position: relative;
  display: flex;
  gap: 16px;
  padding: 12px 0;
}

.route-step .pin {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--seal-red-dark);
  z-index: 1;
}

.route-step strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 3px;
}

.route-step span {
  font-size: 0.88rem;
  color: var(--ink-faint);
  line-height: 1.6;
}

.page-banner {
  padding: 52px 0 68px;
  position: relative;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--ink-faint);
  margin-bottom: 22px;
}

.breadcrumb a:hover {
  color: var(--seal-red-dark);
}

.breadcrumb span[aria-hidden] {
  color: var(--ink-faint);
}

.page-banner h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  line-height: 1.3;
  margin-bottom: 16px;
  max-width: 20ch;
}

.page-banner-lede {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: 28px;
}

.manual-jump-mobile {
  display: none;
}

.manual {
  padding: 0 0 80px;
}

.manual-layout {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 60px;
  align-items: start;
}

.manual-toc {
  position: sticky;
  top: 104px;
}

.manual-toc-label {
  display: block;
  font-family: var(--serif);
  font-size: 0.82rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}

.manual-toc nav {
  display: flex;
  flex-direction: column;
  border-left: 2px solid var(--line);
}

.manual-toc nav a {
  padding: 9px 0 9px 18px;
  margin-left: -2px;
  border-left: 2px solid transparent;
  font-size: 0.9rem;
  line-height: 1.4;
  color: var(--ink-faint);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.manual-toc nav a:hover {
  color: var(--seal-red-dark);
}

.manual-toc nav a.active {
  color: var(--seal-red-dark);
  border-left-color: var(--seal-red);
  font-weight: 700;
}

.manual-content {
  min-width: 0;
}

.manual-section {
  padding: 44px 0;
  border-bottom: 1px dashed var(--line);
  scroll-margin-top: 96px;
}

.manual-content > .manual-section:first-child {
  padding-top: 0;
}

.manual-section-last {
  border-bottom: none;
  padding-bottom: 0;
}

.manual-kicker {
  display: block;
  font-family: var(--serif);
  font-size: 0.82rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

.manual-section h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  margin-bottom: 12px;
}

.manual-intro {
  color: var(--ink-soft);
  line-height: 1.85;
  font-size: 1rem;
  max-width: 62ch;
  margin-bottom: 30px;
}

.manual-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: manual-step;
  max-width: 680px;
}

.manual-steps li {
  position: relative;
  counter-increment: manual-step;
  padding-left: 56px;
  margin-bottom: 24px;
}

.manual-steps li:last-child {
  margin-bottom: 0;
}

.manual-steps li::before {
  content: counter(manual-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: -3px;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--seal-red);
  opacity: 0.8;
}

.manual-steps li strong {
  display: block;
  font-size: 1.02rem;
  margin-bottom: 5px;
}

.manual-steps li p {
  font-size: 0.95rem;
  color: var(--ink-soft);
  line-height: 1.8;
  margin: 0;
}

.manual-steps li p a,
.qa-list dd a {
  color: var(--seal-red-dark);
  border-bottom: 1px dashed var(--seal-red-dark);
}

.manual-steps code,
.qa-list code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: rgba(61, 47, 28, 0.08);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--seal-red-dark);
}

.qa-list {
  margin: 0;
  max-width: 720px;
}

.qa-list dt {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink);
  padding-left: 20px;
  position: relative;
  margin-top: 26px;
}

.qa-list dt:first-of-type {
  margin-top: 0;
}

.qa-list dt::before {
  content: "问";
  position: absolute;
  left: 0;
  top: 1px;
  width: 14px;
  height: 14px;
  line-height: 14px;
  font-size: 0.62rem;
  font-weight: 700;
  text-align: center;
  color: var(--paper-light);
  background: var(--seal-red);
  border-radius: 2px;
}

.qa-list dd {
  margin: 10px 0 0;
  padding-left: 20px;
  border-left: 2px solid var(--line);
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.85;
}

.qa-list-diagnose dd {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.qa-label {
  display: inline-block;
  font-weight: 700;
  color: var(--seal-red-dark);
  margin-right: 6px;
}

.manual-note {
  margin-top: 30px;
  max-width: 680px;
  font-size: 0.88rem;
  color: var(--ink-faint);
  line-height: 1.8;
  padding: 14px 18px;
  background: rgba(61, 47, 28, 0.05);
  border-left: 2px solid var(--gold);
  border-radius: 0 4px 4px 0;
}

@media (max-width: 900px) {
  .manual-jump-mobile {
    display: flex;
  }

  .manual-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .manual-toc {
    display: none;
  }

  .manual-section {
    scroll-margin-top: 78px;
  }
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 0.85rem;
  color: var(--ink-faint);
}

.article-meta .clip-tag {
  position: static;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 40px 44px;
  box-shadow: 0 14px 30px -20px rgba(61, 47, 28, 0.5);
}

.article-body h2 {
  font-size: 1.25rem;
  color: var(--seal-red-dark);
  margin: 30px 0 14px;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body p {
  font-size: 0.98rem;
  line-height: 1.95;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.article-body ul,
.article-body ol {
  margin: 0 0 16px;
  padding-left: 22px;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.article-body strong {
  color: var(--ink);
}

.article-body a {
  color: var(--seal-red-dark);
  border-bottom: 1px dashed var(--seal-red-dark);
}

.article-cta {
  max-width: 720px;
  margin: 32px auto 0;
  background: var(--paper);
  border: 1px dashed var(--gold);
  border-radius: 10px;
  padding: 24px 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.article-cta p {
  font-size: 0.95rem;
  color: var(--ink-soft);
  max-width: 40ch;
}

.article-nav {
  max-width: 720px;
  margin: 28px auto 0;
  text-align: center;
}

.article-nav a {
  font-size: 0.9rem;
  color: var(--seal-red-dark);
  border-bottom: 1px dashed var(--seal-red-dark);
}

.floating-cta {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 70;
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, var(--paper-light) 0%, var(--paper) 100%);
  border: 1px solid var(--line);
  border-radius: 40px;
  padding: 8px 10px 8px 8px;
  box-shadow: 0 12px 26px -10px rgba(61, 47, 28, 0.45);
  animation: floating-cta-in 0.35s ease;
}

.floating-cta.dismissed {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

@keyframes floating-cta-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.floating-cta-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-right: 6px;
}

.floating-cta-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--gold-bright), var(--seal-red) 55%, var(--seal-red-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.25);
}

.floating-cta-icon svg {
  width: 20px;
  height: 20px;
  fill: #f8ecd2;
}

.floating-cta-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.floating-cta-copy strong {
  font-size: 0.86rem;
  color: var(--ink);
}

.floating-cta-copy span {
  font-size: 0.8rem;
  color: var(--seal-red-dark);
  font-weight: 700;
}

.floating-cta-close {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  margin-left: 4px;
  border-radius: 50%;
  color: var(--ink-faint);
  font-size: 1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease;
}

.floating-cta-close:hover {
  background: rgba(61, 47, 28, 0.1);
  color: var(--seal-red-dark);
}

.platform-group {
  padding: 36px 0;
}

.platform-group + .platform-group {
  border-top: 1px dashed var(--line);
}

.platform-group-head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 22px;
}

.platform-group-icon {
  flex-shrink: 0;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 2px solid var(--seal-red);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--seal-red);
  transform: rotate(-6deg);
}

.platform-group-icon svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.platform-group-head h2 {
  font-size: 1.24rem;
  margin-bottom: 4px;
}

.platform-group-head p {
  font-size: 0.86rem;
  color: var(--ink-faint);
}

.software-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
}

.software-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 20px 20px;
}

.recommend-flag {
  position: absolute;
  top: -1px;
  right: 18px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: var(--seal-red);
  padding: 3px 10px 5px;
  border-radius: 0 0 6px 6px;
  letter-spacing: 0.05em;
}

.software-title {
  font-size: 1.08rem;
  padding-right: 44px;
}

.version-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gold);
  background: rgba(163, 118, 44, 0.14);
  padding: 1px 8px;
  border-radius: 12px;
  margin-left: 4px;
}

.software-desc {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.pkg-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pkg-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: rgba(74, 58, 42, 0.05);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
}

.pkg-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.pkg-name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
}

.pkg-meta {
  font-size: 0.76rem;
  color: var(--ink-faint);
}

.btn-pkg {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  font-size: 0.84rem;
  font-weight: 700;
  color: #fdf6e3;
  background: linear-gradient(180deg, var(--seal-red) 0%, var(--seal-red-dark) 100%);
  border-radius: 20px;
  box-shadow: 0 3px 8px rgba(140, 30, 30, 0.28);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-pkg:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 12px rgba(140, 30, 30, 0.34);
}

.action-note {
  font-size: 0.78rem;
  color: var(--ink-faint);
  line-height: 1.6;
  margin-top: auto;
  padding-top: 4px;
}

.action-note a {
  color: var(--seal-red-dark);
  border-bottom: 1px dashed var(--seal-red-dark);
}

section {
  padding: 78px 0;
  position: relative;
  scroll-margin-top: 84px;
}

.platform-card {
  scroll-margin-top: 100px;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-tag {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 14px;
}

.section-head p {
  color: var(--ink-soft);
  line-height: 1.8;
  font-size: 1rem;
}

.section-alt {
  background: var(--paper-light);
}

.section-head-spaced {
  margin-top: 64px;
}

.section-foot-link {
  text-align: center;
  margin-top: 40px;
}

.section-foot-link a {
  font-size: 0.98rem;
  color: var(--seal-red-dark);
  border-bottom: 1px dashed var(--seal-red-dark);
  padding-bottom: 2px;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.about-copy h3 {
  font-size: 1.05rem;
  color: var(--seal-red-dark);
  margin-bottom: 8px;
}

.about-copy h3:not(:first-child) {
  margin-top: 24px;
}

.about-copy p {
  font-size: 0.96rem;
  line-height: 1.9;
  color: var(--ink-soft);
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  align-content: start;
}

.fact-card {
  min-width: 0;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 16px;
  text-align: center;
}

.fact-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--seal-red);
  margin-bottom: 6px;
}

.fact-label {
  display: block;
  font-size: 0.8rem;
  color: var(--ink-faint);
  line-height: 1.5;
}

.persona-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
}

.persona-card {
  position: relative;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 26px 22px 22px;
  box-shadow: 3px 4px 0 rgba(61, 47, 28, 0.1);
}

.persona-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 26px 26px 0;
  border-color: transparent var(--paper-dark) transparent transparent;
}

.persona-tag {
  display: inline-block;
  font-family: var(--serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--paper-light);
  background: var(--seal-red);
  padding: 2px 10px;
  border-radius: 3px;
  margin-bottom: 14px;
}

.persona-card h3 {
  font-size: 1.02rem;
  margin-bottom: 10px;
  line-height: 1.45;
}

.persona-card p {
  font-size: 0.88rem;
  color: var(--ink-faint);
  line-height: 1.75;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 22px;
}

.platform-card {
  position: relative;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 26px 22px 24px;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.platform-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 30px -16px rgba(61, 47, 28, 0.5);
}

.platform-card .stamp {
  width: 62px;
  height: 62px;
  margin: 0 auto 16px;
  border-radius: 50%;
  border: 2px solid var(--seal-red);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--seal-red);
  transform: rotate(-6deg);
}

.platform-card .stamp svg {
  width: 30px;
  height: 30px;
  fill: currentColor;
}

.platform-card h3 {
  font-size: 1.08rem;
  margin-bottom: 6px;
}

.platform-card .client-name {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--gold);
  background: rgba(163, 118, 44, 0.12);
  padding: 2px 10px;
  border-radius: 12px;
  margin-bottom: 10px;
}

.platform-card p {
  font-size: 0.86rem;
  color: var(--ink-faint);
  line-height: 1.65;
  margin-bottom: 16px;
  min-height: 62px;
}

.platform-card .version-tag {
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}

.platform-card .version-tag b {
  color: var(--ink);
}

.btn-outline {
  display: inline-block;
  width: 100%;
  padding: 10px 0;
  border: 1.5px solid var(--seal-red);
  border-radius: 24px;
  color: var(--seal-red-dark);
  font-size: 0.92rem;
  font-weight: 700;
}

.btn-outline:hover {
  background: var(--seal-red);
  color: var(--paper-light);
}

.download-note {
  margin-top: 30px;
  text-align: center;
  font-size: 0.86rem;
  color: var(--ink-faint);
}

.badge-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  text-align: center;
}

.badge-item .badge-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--gold-bright), var(--gold) 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.25);
}

.badge-item .badge-icon svg {
  width: 30px;
  height: 30px;
  fill: var(--paper-light);
}

.badge-item h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.badge-item p {
  font-size: 0.9rem;
  color: var(--ink-faint);
  line-height: 1.7;
}

.booklet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.booklet {
  display: flex;
  gap: 16px;
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-left: 6px solid var(--seal-red);
  border-radius: 4px 10px 10px 4px;
  padding: 22px;
  box-shadow: 4px 6px 0 rgba(61, 47, 28, 0.08);
  transition: transform 0.2s ease;
}

.booklet:hover {
  transform: translateX(4px);
}

.booklet .num {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--gold);
  flex-shrink: 0;
  line-height: 1;
}

.booklet h3 {
  font-size: 1.02rem;
  margin-bottom: 8px;
}

.booklet p {
  font-size: 0.88rem;
  color: var(--ink-faint);
  line-height: 1.7;
  margin-bottom: 10px;
}

.booklet a {
  font-size: 0.86rem;
  color: var(--seal-red-dark);
  font-weight: 700;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--paper-light);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  cursor: pointer;
}

.faq-question .q-mark {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1.5px solid var(--seal-red);
  color: var(--seal-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  transition: transform 0.25s ease;
}

.faq-item.open .q-mark {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 22px 20px 64px;
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.8;
}

.clip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.clip {
  background: var(--paper-light);
  border: 1px solid var(--line);
  position: relative;
  box-shadow: 0 8px 0 -4px rgba(0,0,0,0), 3px 3px 10px rgba(61,47,28,0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.clip:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 22px -12px rgba(61, 47, 28, 0.45);
}

.clip-link {
  display: block;
  padding: 22px;
}

.clip::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 18px;
  width: 22px;
  height: 12px;
  background: var(--gold);
  opacity: 0.85;
  transform: rotate(-3deg);
}

.clip .clip-date {
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

.clip .clip-tag {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--seal-red-dark);
  border: 1px solid var(--seal-red-dark);
  padding: 1px 8px;
  border-radius: 10px;
  margin-left: 10px;
}

.clip h3 {
  font-size: 1.02rem;
  margin: 12px 0 10px;
  line-height: 1.5;
}

.clip p {
  font-size: 0.88rem;
  color: var(--ink-faint);
  line-height: 1.7;
}

.clip .read-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--seal-red-dark);
  font-weight: 700;
}

.clip-link:hover .read-more {
  text-decoration: underline;
}

.site-footer {
  background: linear-gradient(180deg, var(--paper-dark), #ddc79c);
  border-top: 2px solid var(--gold);
  padding: 56px 0 26px;
  color: var(--ink-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}

.footer-grid > * {
  min-width: 0;
}

.site-footer .brand {
  white-space: normal;
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-top: 12px;
  max-width: 34ch;
}

.footer-col h4 {
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  color: var(--ink);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.footer-col a:hover {
  color: var(--seal-red-dark);
}

.footer-bottom {
  border-top: 1px solid rgba(61, 47, 28, 0.25);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--ink-faint);
  line-height: 1.7;
}

.footer-bottom .disclaimer {
  max-width: 720px;
}

@media (max-width: 920px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-scroll {
    transform: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-facts {
    grid-template-columns: repeat(4, 1fr);
  }
  .software-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }
}

@media (max-width: 560px) {
  .about-facts {
    grid-template-columns: repeat(2, 1fr);
  }
  .software-grid {
    grid-template-columns: 1fr;
  }
  .pkg-item {
    align-items: center;
  }
  .btn-pkg {
    min-width: 72px;
  }
}

@media (min-width: 721px) and (max-width: 1080px) {
  .site-header .brand-text {
    display: none;
  }
  .nav-links {
    gap: clamp(8px, 1.4vw, 16px);
  }
  .nav-links a {
    font-size: 0.86rem;
  }
  .lang-switch-btn {
    padding: 5px 10px;
    font-size: 0.85rem;
  }
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper-light);
    border-bottom: 2px solid var(--gold);
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 20px 24px;
    display: none;
    max-height: 80vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links a {
    display: block;
    width: 100%;
    padding: 16px 4px;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(61, 47, 28, 0.1);
  }
  .nav-links li:last-child a {
    border-bottom: none;
  }
  body.nav-open {
    overflow: hidden;
  }
  .nav-toggle {
    display: flex;
  }
  .lang-switch {
    margin-left: auto;
  }
  .site-header .brand-text {
    display: none;
  }
  .site-header .brand-seal {
    width: 34px;
    height: 34px;
  }
  .lang-switch-btn {
    padding: 6px 10px;
    font-size: 0.85rem;
  }
  .container {
    padding-left: 20px;
    padding-right: 20px;
  }
  .nav-bar {
    padding-top: 12px;
    padding-bottom: 12px;
  }
  section {
    padding: 40px 0;
  }
  .hero {
    padding: 24px 0 36px;
  }
  .hero-grid {
    gap: 24px;
  }
  .eyebrow {
    font-size: 0.78rem;
    padding: 4px 12px;
    margin-bottom: 16px;
    letter-spacing: 0.08em;
  }
  .hero h1 {
    font-size: clamp(1.3rem, 5.4vw, 1.7rem);
    line-height: 1.35;
    margin-bottom: 14px;
  }
  .hero-lede {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
  }
  .hero-actions {
    gap: 12px 16px;
    margin-bottom: 22px;
  }
  .btn-seal {
    padding: 13px 26px;
    font-size: 0.95rem;
  }
  .btn-ghost {
    font-size: 0.9rem;
  }
  .platform-strip {
    gap: 8px 12px;
    margin-bottom: 18px;
  }
  .platform-strip-label {
    font-size: 0.8rem;
    width: 100%;
    margin-bottom: 2px;
  }
  .platform-pill {
    padding: 6px 12px 6px 10px;
    font-size: 0.8rem;
  }
  .platform-pill svg {
    width: 15px;
    height: 15px;
  }
  .trust-strip {
    gap: 6px 16px;
    font-size: 0.76rem;
  }
  .hero-scroll {
    padding: 20px 18px;
  }
  .hero-scroll h3 {
    font-size: 1rem;
    margin-bottom: 14px;
  }
  .route-step {
    gap: 12px;
    padding: 10px 0;
  }
  .route-step .pin {
    width: 34px;
    height: 34px;
    font-size: 0.88rem;
  }
  .route-step strong {
    font-size: 0.92rem;
  }
  .route-step span {
    font-size: 0.8rem;
    line-height: 1.5;
  }
  .page-banner {
    padding: 26px 0 32px;
  }
  .page-banner h1 {
    font-size: clamp(1.35rem, 5.4vw, 1.7rem);
    margin-bottom: 12px;
    max-width: none;
  }
  .page-banner-lede {
    font-size: 0.88rem;
    line-height: 1.65;
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
  }
  .page-banner .platform-strip {
    margin-bottom: 0;
  }
  .section-head {
    margin: 0 auto 30px;
  }
  .section-head h2 {
    font-size: clamp(1.3rem, 4.6vw, 1.6rem);
    margin-bottom: 10px;
  }
  .section-head p {
    font-size: 0.9rem;
    line-height: 1.7;
  }
  .section-foot-link {
    margin-top: 24px;
  }
  .section-foot-link a {
    font-size: 0.9rem;
  }
  .about-facts,
  .persona-grid,
  .platform-grid,
  .software-grid,
  .badge-row,
  .booklet-grid,
  .clip-grid,
  .faq-list {
    gap: 14px;
  }
  .platform-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .badge-row {
    grid-template-columns: 1fr;
  }
  .fact-card {
    padding: 16px 12px;
  }
  .fact-num {
    font-size: 1.2rem;
    margin-bottom: 4px;
  }
  .fact-label {
    font-size: 0.78rem;
    line-height: 1.45;
  }
  .platform-card {
    padding: 18px 14px 16px;
  }
  .platform-card .stamp {
    width: 40px;
    height: 40px;
    margin-bottom: 10px;
  }
  .platform-card .stamp svg {
    width: 20px;
    height: 20px;
  }
  .platform-card h3 {
    font-size: 0.98rem;
    margin-bottom: 6px;
  }
  .platform-card .client-name {
    font-size: 0.76rem;
    padding: 2px 8px;
    margin-bottom: 8px;
  }
  .platform-card p {
    font-size: 0.78rem;
    line-height: 1.5;
    margin-bottom: 10px;
    min-height: 0;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
  }
  .platform-card .version-tag {
    font-size: 0.74rem;
    margin-bottom: 10px;
  }
  .btn-outline {
    padding: 8px 0;
    font-size: 0.84rem;
  }
  .software-card {
    padding: 16px 14px 14px;
    gap: 8px;
  }
  .software-title {
    font-size: 0.98rem;
    padding-right: 36px;
  }
  .software-desc {
    font-size: 0.8rem;
    line-height: 1.55;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
  }
  .recommend-flag {
    font-size: 0.68rem;
    padding: 3px 9px 5px;
    right: 14px;
  }
  .pkg-item {
    padding: 10px 12px;
  }
  .pkg-meta {
    font-size: 0.76rem;
  }
  .btn-pkg {
    padding: 8px 16px;
    font-size: 0.84rem;
  }
  .platform-group {
    padding: 28px 0;
  }
  .platform-group-head {
    gap: 14px;
    margin-bottom: 18px;
  }
  .platform-group-icon {
    width: 44px;
    height: 44px;
  }
  .platform-group-icon svg {
    width: 22px;
    height: 22px;
  }
  .platform-group-head h2 {
    font-size: 1.1rem;
  }
  .platform-group-head p {
    font-size: 0.8rem;
  }
  .action-note {
    font-size: 0.76rem;
  }
  .badge-item {
    padding: 6px 0;
  }
  .badge-item .badge-icon {
    width: 36px;
    height: 36px;
    margin-bottom: 8px;
  }
  .badge-item .badge-icon svg {
    width: 18px;
    height: 18px;
  }
  .badge-item h3 {
    font-size: 0.95rem;
    margin-bottom: 4px;
  }
  .badge-item p {
    font-size: 0.8rem;
    line-height: 1.5;
  }
  .booklet {
    padding: 16px;
    gap: 14px;
  }
  .booklet .num {
    font-size: 1.25rem;
  }
  .booklet h3 {
    font-size: 0.96rem;
    margin-bottom: 6px;
  }
  .booklet p {
    font-size: 0.84rem;
    line-height: 1.6;
    margin-bottom: 8px;
  }
  .clip-link {
    padding: 16px;
  }
  .clip h3 {
    font-size: 0.96rem;
    margin: 10px 0 8px;
  }
  .clip p {
    font-size: 0.84rem;
    line-height: 1.6;
  }
  .clip .read-more {
    margin-top: 10px;
    font-size: 0.84rem;
  }
  .faq-item .faq-question {
    padding: 14px 16px;
    font-size: 0.92rem;
  }
  .faq-answer p {
    padding: 0 16px 16px 16px;
    font-size: 0.88rem;
    line-height: 1.65;
  }
  .article-body {
    padding: 26px 20px;
  }
  .article-cta {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }
  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 20px 0 30px;
  }
  .hero h1 {
    font-size: clamp(1.2rem, 5.4vw, 1.5rem);
    margin-bottom: 12px;
  }
  .hero-lede {
    -webkit-line-clamp: 3;
    margin-bottom: 18px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-bottom: 20px;
  }
  .btn-seal {
    width: 100%;
    justify-content: center;
    padding: 13px 20px;
  }
  .btn-ghost {
    text-align: center;
  }
  .platform-strip {
    margin-bottom: 16px;
  }
  .trust-strip {
    display: none;
  }
  .hero-scroll {
    display: none;
  }
  .page-banner {
    padding: 20px 0 26px;
  }
  .page-banner h1 {
    font-size: clamp(1.2rem, 5.2vw, 1.5rem);
  }
  .page-banner-lede {
    -webkit-line-clamp: 3;
    margin-bottom: 14px;
  }
  .platform-group {
    padding: 22px 0;
  }
  .platform-group-head {
    flex-direction: row;
    text-align: left;
    align-items: center;
    margin-bottom: 14px;
  }
  .software-card {
    padding: 14px;
  }
  .software-desc {
    -webkit-line-clamp: 2;
  }
  .floating-cta {
    right: 14px;
    bottom: 14px;
  }
  .floating-cta-copy {
    display: none;
  }
  .floating-cta-link {
    padding-right: 0;
  }
}