.inner-v2 {
  --inner-ink: #292521;
  --inner-muted: #777169;
  --inner-paper: #f6f8fa;
  --inner-line: #dde0e2;
  --inner-red: #963438;
  --inner-red-dark: #70282c;
  --inner-serif: 'Iowan Old Style', 'Songti SC', 'Noto Serif SC', 'STSong', serif;
  --header-h: 92px;
  --bg: #fff;
  --bg-1: #fff;
  --bg-2: #f6f8fa;
  --surface: #fff;
  --surface-2: #fff;
  --surface-3: #eff2f6;
  --line: #dde0e2;
  --line-strong: #cfd6dc;
  --text: #292521;
  --text-soft: #514a43;
  --muted: #777169;
  --muted-2: #99938b;
  --accent: #963438;
  --accent-soft: #b94b4f;
  --accent-dim: rgba(150, 52, 56, 0.08);
  --gold: #94652f;
  background: #fff;
  color: var(--inner-ink);
}

.inner-v2 .site-header {
  inset: 27px 0 auto;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.inner-v2 .site-header::before {
  display: none;
}

.inner-v2 .site-header.is-scrolled {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.inner-v2 .site-header__inner {
  width: min(calc(100% - 48px), var(--container));
  height: 84px;
  gap: clamp(16px, 2.4vw, 34px);
  padding: 8px 12px 8px 20px;
  border: 1px solid rgba(41, 37, 33, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 14px 38px -27px rgba(41, 37, 33, 0.35), 0 1px 2px rgba(41, 37, 33, 0.04);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.inner-v2 .site-header.is-scrolled .site-header__inner {
  border-color: rgba(41, 37, 33, 0.1);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 18px 42px -26px rgba(41, 37, 33, 0.36), 0 1px 2px rgba(41, 37, 33, 0.04);
}

.inner-v2 .brand {
  flex: 0 0 auto;
  gap: var(--brand-gap);
}

.inner-v2 .brand__mark {
  width: var(--brand-mark);
  height: var(--brand-mark);
  border-color: transparent;
  border-radius: 0;
  background: none;
  color: var(--inner-red-dark);
}

.inner-v2 .brand__text strong {
  font-size: var(--brand-name-fs);
}

.inner-v2 .brand__text small {
  font-size: var(--brand-sub-fs);
}

.inner-v2 .desktop-nav {
  position: static;
  flex: 1 1 auto;
  justify-content: center;
  min-width: 0;
  margin-left: auto;
  padding: 0;
  transform: none;
  gap: clamp(3px, 0.55vw, 8px);
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  color: #514a43;
  font-size: var(--fs-nav);
  font-weight: 600;
  letter-spacing: 0.025em;
}

.inner-v2 .desktop-nav a {
  padding: 11px clamp(9px, 1vw, 15px);
  border-radius: 999px;
  color: inherit;
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.inner-v2 .desktop-nav a::after {
  display: none;
}

.inner-v2 .desktop-nav a:hover {
  background: rgba(150, 52, 56, 0.07);
  color: var(--inner-red);
}

.inner-v2 .desktop-nav a.is-active,
.inner-v2 .desktop-nav a.is-active:hover {
  background: var(--inner-red-dark);
  color: #fff;
  box-shadow: 0 7px 17px -11px rgba(112, 40, 44, 0.85);
}

.inner-v2 .site-header__actions .btn {
  min-height: 46px;
  padding-inline: 21px;
  border-radius: 999px;
  font-size: var(--fs-sm);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.inner-v2 .btn--primary {
  background: var(--inner-red);
  box-shadow: 0 10px 24px -16px rgba(112, 40, 44, 0.72);
}

.inner-v2 .btn--primary:hover {
  background: var(--inner-red-dark);
}

.inner-v2 .menu-button {
  border-color: transparent;
  background: var(--inner-red);
  color: #fff;
}

.inner-v2 .mobile-menu {
  border: 0;
  background: var(--inner-paper);
}

.inner-v2 .mobile-menu__inner {
  width: min(calc(100% - 80px), 900px);
  padding: 32px 0 38px;
}

.inner-v2 .mobile-menu__nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(18px, 5vw, 64px);
}

.inner-v2 .mobile-menu__nav a {
  align-items: center;
  gap: 14px;
  min-width: 0;
  padding: 22px 4px;
  border: 0;
  border-bottom: 1px solid var(--inner-line);
  border-radius: 0;
  color: var(--inner-ink);
  font-family: var(--inner-serif);
  font-size: clamp(20px, 2.7vw, 30px);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.inner-v2 .mobile-menu__nav a:hover,
.inner-v2 .mobile-menu__nav a.is-active {
  border-color: var(--inner-red);
  background: transparent;
  color: var(--inner-red);
  box-shadow: none;
}

.inner-v2 .mobile-menu__nav a span {
  flex: 0 0 auto;
  padding-top: 0;
  color: #a79f95;
  font-size: var(--fs-micro);
}

.inner-v2 .mobile-menu__foot {
  gap: 16px;
  padding-top: 30px;
}

.inner-v2 .mobile-menu__foot p {
  color: var(--inner-muted);
}

.inner-v2 .mobile-menu__foot .btn {
  max-width: 320px;
}

.inner-hero {
  position: relative;
  padding-top: var(--header-h);
  overflow: hidden;
  background: linear-gradient(
    to bottom,
    #fff 0,
    #fff calc(var(--header-h) + 36px),
    var(--inner-red-dark) calc(var(--header-h) + 36px),
    var(--inner-red-dark) 100%
  );
  color: #fff;
}

.inner-hero__texture {
  position: absolute;
  inset: calc(var(--header-h) + 36px) 0 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 78% 40%, rgba(217, 182, 120, 0.14), transparent 36%),
    radial-gradient(ellipse at 6% 8%, rgba(150, 52, 56, 0.5), transparent 46%),
    linear-gradient(90deg, transparent 0 64%, rgba(255, 255, 255, 0.025) 64% 100%);
}

.inner-hero__texture::after {
  content: '';
  position: absolute;
  top: 0;
  right: 7.5%;
  width: 1px;
  height: 100%;
  background: rgba(255, 248, 238, 0.13);
}

/* 与首页一致：文案顶端锚定，标签位置固定 */
.inner-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: clamp(24px, 4vw, 64px);
  min-height: 359px;
  padding-top: 85px;
  padding-bottom: 0;
}

.inner-v2 .inner-hero .section-kicker {
  margin-bottom: 14px;
  color: #e2c99f;
  font-size: var(--fs-xs);
  letter-spacing: 0.11em;
}

.inner-v2 .inner-hero .section-kicker span {
  color: #e5c27f;
}

.inner-v2 .inner-hero .section-kicker::after {
  width: 40px;
  background: rgba(226, 201, 159, 0.42);
}

.inner-hero__copy h2 {
  max-width: 760px;
  color: #fffaf3;
  font-family: var(--inner-serif);
  font-size: clamp(30px, 3.1vw, 44px);
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: -0.045em;
}

.inner-hero__copy > p {
  max-width: 580px;
  margin-top: 14px;
  color: rgba(255, 250, 243, 0.76);
  font-size: var(--fs-sm);
  line-height: 1.85;
}

.inner-hero__actions {
  display: flex;
  flex-direction: column;
  align-self: center;
  align-items: flex-start;
  gap: 12px;
  padding-bottom: 2px;
}

.inner-hero__actions .btn {
  min-height: 44px;
  padding-inline: 22px;
  border-radius: 7px;
  background: #f5ecdc;
  color: var(--inner-red-dark);
  box-shadow: 0 12px 26px -17px rgba(27, 8, 8, 0.72);
}

.inner-hero__actions .btn:hover {
  background: #fffaf3;
  color: var(--inner-red-dark);
}

.inner-hero__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 250, 243, 0.48);
  color: #fffaf3;
  font-size: var(--fs-sm);
  font-weight: 600;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.inner-hero__link span {
  color: #e5c27f;
  transition: transform 0.2s ease;
}

.inner-hero__link:hover {
  border-color: #e5c27f;
  color: #e5c27f;
}

.inner-hero__link:hover span {
  transform: translate(2px, -2px);
}

.inner-hero__footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(255, 250, 243, 0.2);
}

.inner-hero__footer-inner {
  display: flex;
  min-height: 38px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: rgba(255, 250, 243, 0.74);
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
}

.inner-hero__footer-inner > a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #e5c27f;
  font-size: var(--fs-micro);
  white-space: nowrap;
}

.inner-hero__footer-inner > a i {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border: 1px solid rgba(229, 194, 127, 0.52);
  border-radius: 50%;
  font-size: var(--fs-xs);
  font-style: normal;
}

.inner-v2 .section {
  border-top: 0;
  background: var(--inner-paper);
  padding-top: clamp(64px, 6.4vw, 92px);
}

.inner-v2 .about__copy > p:first-child,
.inner-v2 .demo__copy > .demo__topics:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.inner-v2 .section-heading h2,
.inner-v2 .copyright__heading h2,
.inner-v2 .demo__copy h2,
.inner-v2 .about__copy h2 {
  color: var(--inner-ink);
  font-family: var(--inner-serif);
  font-weight: 500;
  letter-spacing: -0.055em;
}

.inner-v2 .section-heading h2 {
  font-size: var(--fs-section-title);
  line-height: var(--lh-section-title);
}

.inner-v2 .section-heading__row > p,
.inner-v2 .copyright__heading-row > p {
  color: var(--inner-muted);
}

.inner-v2 .section-kicker {
  color: var(--inner-muted);
  letter-spacing: 0.14em;
}

.inner-v2 .section-kicker span {
  color: var(--inner-red);
}

.inner-v2 .section-kicker::after {
  background: var(--inner-line);
}

.inner-v2 .section--paper {
  background: var(--inner-paper);
}

.inner-v2 .capability h3,
.inner-v2 .solution-card h3,
.inner-v2 .timeline h3,
.inner-v2 .service-panel__head h3,
.inner-v2 .security-panel__head h3 {
  color: var(--inner-ink);
  font-family: var(--inner-serif);
  font-weight: 500;
}

.inner-v2 .capability:hover,
.inner-v2 .capability:focus-visible,
.inner-v2 .capability.is-active {
  background: linear-gradient(90deg, rgba(150, 52, 56, 0.055), transparent 75%);
}

.inner-v2 .solution-card,
.inner-v2 .quant-board,
.inner-v2 .security-panel,
.inner-v2 .service-panel,
.inner-v2 .demo-form {
  border-color: rgba(41, 37, 33, 0.1);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 20px 56px -45px rgba(41, 37, 33, 0.38);
}

.inner-v2 .solution-card:hover {
  border-color: rgba(150, 52, 56, 0.3);
  background: #fff;
}

.inner-v2 .quant-board {
  border-radius: 14px;
}

.inner-v2 .radar__core {
  background: radial-gradient(circle, #fff, #f6f8fa 72%);
}

.inner-v2 .radar-label {
  background: rgba(255, 255, 255, 0.94);
  color: var(--inner-muted);
  box-shadow: 0 4px 16px -12px rgba(41, 37, 33, 0.35);
}

.inner-v2 .arch-diagram {
  border-color: rgba(41, 37, 33, 0.1);
  border-radius: 12px;
  box-shadow: 0 20px 56px -40px rgba(41, 37, 33, 0.32);
}

.inner-v2 .about__copy h2,
.inner-v2 .demo__copy h2 {
  font-size: var(--fs-section-title);
  line-height: var(--lh-section-title);
}

.inner-v2 .copyright__heading h2 {
  font-size: var(--fs-section-title);
  line-height: var(--lh-section-title);
}

.inner-v2 .site-footer {
  border-top-color: var(--inner-line);
  background: #fff;
}

.inner-v2 .footer__bottom {
  border-top-color: var(--inner-line);
}

@media (max-width: 1180px) {
  .inner-v2 .site-header__inner {
    width: min(calc(100% - 48px), var(--container));
  }

  .inner-v2 .desktop-nav {
    display: none;
  }

  .inner-v2 .menu-button {
    display: flex;
  }
}

@media (max-width: 1024px) {
  .inner-hero__inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 22px;
    min-height: 0;
    padding-top: 62px;
    padding-bottom: 26px;
  }

  .inner-hero__actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px 22px;
    padding-bottom: 0;
  }
}

@media (max-width: 768px) {
  .inner-v2 {
    --header-h: 66px;
  }

  .inner-hero__inner {
    padding-top: 62px;
    padding-bottom: 20px;
  }

  .inner-hero__copy h2 {
    font-size: clamp(26px, 6.6vw, 34px);
  }

  .inner-hero__copy > p {
    margin-top: 10px;
    font-size: var(--fs-xs);
  }

  .inner-hero__actions .btn {
    min-height: 40px;
    padding-inline: 18px;
    font-size: var(--fs-sm);
  }

  .inner-hero__footer-inner {
    min-height: 34px;
    font-size: var(--fs-micro);
  }

  .inner-v2 .site-header__inner {
    width: min(calc(100% - 32px), var(--container));
    height: 58px;
    padding: 6px 8px 6px 12px;
  }

  .inner-v2 .brand__mark {
    width: 34px;
    height: 34px;
  }

  .inner-v2 .brand__mark svg {
    width: 34px;
    height: 34px;
  }

  .inner-v2 .brand__text strong {
    font-size: 16px;
  }

  .inner-v2 .mobile-menu__inner {
    width: min(calc(100% - 40px), 620px);
    padding: 26px 0 30px;
  }

  .inner-v2 .mobile-menu__nav {
    column-gap: 16px;
  }

  .inner-v2 .mobile-menu__nav a {
    gap: 9px;
    padding: 19px 2px;
    font-size: clamp(18px, 4vw, 24px);
  }

  .inner-v2 .section {
    padding-top: 56px;
    padding-bottom: 84px;
  }

  .inner-v2 .section-heading {
    margin-bottom: 42px;
  }

  .inner-v2 .section-heading__row {
    gap: 18px;
  }

  .inner-v2 .section-heading h2,
  .inner-v2 .about__copy h2,
  .inner-v2 .demo__copy h2,
  .inner-v2 .copyright__heading h2 {
    font-size: var(--fs-section-title);
    line-height: var(--lh-section-title);
  }
}

.arch-risk__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.arch-risk__card {
  padding: 24px 22px 22px;
  border: 1px solid rgba(41, 37, 33, 0.1);
  border-radius: 12px;
  background: #fff;
}

.arch-risk__card span {
  color: var(--inner-red);
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
}

.arch-risk__card h3 {
  margin-top: 12px;
  color: var(--inner-ink);
  font-family: var(--inner-serif);
  font-size: 20px;
  font-weight: 500;
}

.arch-risk__card p {
  margin-top: 10px;
  color: var(--inner-muted);
  font-size: 13px;
  line-height: 1.85;
}

@media (max-width: 1024px) {
  .arch-risk__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .arch-risk__grid {
    grid-template-columns: 1fr;
  }

  .arch-risk__card {
    padding: 20px 18px 18px;
  }
}

/* --------------------------------------------------------------------------
   段间距压缩：与首页一致，各内容区上下留白统一减少 30%
   （仅改区块竖向留白，首屏与区块内部间距不变）
   -------------------------------------------------------------------------- */
.inner-v2 .section {
  padding-top: calc(clamp(64px, 6.4vw, 92px) * 0.7);
  padding-bottom: calc(128px * 0.7);
}

.inner-v2 .st-contact {
  padding-block: calc(clamp(48px, 6vw, 76px) * 0.7);
}

@media (max-width: 768px) {
  .inner-v2 .section {
    padding-top: calc(56px * 0.7);
    padding-bottom: calc(84px * 0.7);
  }
}