.ja700-page {
  --ja-panel: linear-gradient(155deg, rgba(15, 32, 57, .9), rgba(6, 16, 31, .96));
  --ja-hairline: rgba(103, 232, 249, .2);
}

.ja700-page section[id] { scroll-margin-top: 132px; }
.ja-layer { position: relative; z-index: 1; }

/* Hero：先识别产品，再表达安全范式。 */
.ja-hero {
  min-height: min(760px, 86vh);
  padding: 168px 0 118px;
  position: relative;
  overflow: hidden;
}
.ja-orb-a { right: 4%; top: 10%; }
.ja-hero-grid {
  position: relative;
  z-index: 1;
  display: block;
  max-width: 1040px;
  text-align: center;
}
.ja-hero-copy .kicker { justify-content: center; }
.ja-hero-copy .kicker::after { content: ""; width: 34px; height: 1px; background: var(--grad-main); }
.ja-product-name {
  margin: 2px 0 12px;
  color: var(--cyan);
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 900;
  letter-spacing: .04em;
}
.ja-product-name span { color: var(--ink); font-size: .72em; letter-spacing: .08em; }
.ja-hero h1 {
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 24px;
  font-size: clamp(44px, 5.6vw, 74px);
  line-height: 1.08;
}
.ja-hero .lead {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
  color: var(--ink-dim);
  font-size: clamp(16px, 1.35vw, 19px);
  line-height: 1.95;
  text-align: center;
}
.ja-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 28px 0 34px; }
.ja-badges .tag { padding: 7px 14px; }
.ja-hero .hero-actions { justify-content: center; }

/* 专题锚点导航。 */
.ja-subnav {
  position: sticky;
  top: 74px;
  z-index: 40;
  border-top: 1px solid rgba(56, 189, 248, .08);
  border-bottom: 1px solid var(--line);
  background: rgba(4, 10, 20, .9);
  backdrop-filter: blur(18px);
}
.ja-subnav .wrap {
  display: flex;
  justify-content: center;
  gap: clamp(4px, 1vw, 16px);
  overflow-x: auto;
  scrollbar-width: none;
}
.ja-subnav .wrap::-webkit-scrollbar { display: none; }
.ja-subnav a {
  flex: 0 0 auto;
  padding: 14px 16px;
  color: var(--ink-dim);
  font-size: 13px;
  letter-spacing: .04em;
  transition: color .25s, background .25s;
}
.ja-subnav a:hover,
.ja-subnav a:focus-visible,
.ja-subnav a.active { color: var(--cyan-soft); background: rgba(34, 211, 238, .06); }
.ja-subnav a.active { box-shadow: inset 0 -2px 0 var(--cyan); }

.ja-section { padding: 120px 0; }
.ja-head { max-width: 980px; margin: 0 auto 58px; text-align: center; }
.ja-head .kicker { justify-content: center; }
.ja-head .kicker::after { content: ""; width: 34px; height: 1px; background: var(--grad-main); }
.ja-head h2 { margin: 12px 0 18px; font-size: clamp(34px, 4.2vw, 54px); }
.ja-head p {
  max-width: 900px;
  margin: 0 auto;
  color: var(--ink-dim);
  font-size: 17px;
  line-height: 1.9;
  text-align: center;
}

/* 先进架构：核心芯片 + 环绕能力板，奇数项自动居中。 */
.ja-architecture-board {
  position: relative;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: radial-gradient(circle at 50% 8%, rgba(34, 211, 238, .1), transparent 36%), rgba(6, 14, 27, .56);
}
.ja-core {
  position: relative;
  width: min(430px, 88%);
  margin: 0 auto 34px;
  padding: 26px 30px;
  border: 1px solid rgba(103, 232, 249, .34);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(13, 53, 74, .9), rgba(8, 20, 40, .96));
  text-align: center;
  box-shadow: 0 18px 55px rgba(0, 0, 0, .42), 0 0 42px rgba(34, 211, 238, .12);
}
.ja-core::before,
.ja-core::after {
  content: "";
  position: absolute;
  top: 50%;
  width: min(240px, 30vw);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, .48));
}
.ja-core::before { right: 100%; }
.ja-core::after { left: 100%; transform: rotate(180deg); }
.ja-core span,
.ja-core em { display: block; color: var(--cyan-soft); font-size: 10px; font-style: normal; letter-spacing: .18em; }
.ja-core strong {
  display: block;
  margin: 2px 0;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.12;
}
.ja-architecture-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 18px; }
.ja-capability {
  position: relative;
  flex: 0 1 calc(33.333% - 12px);
  min-width: 260px;
  padding: 28px 28px 28px 74px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--ja-panel);
}
.ja-capability-index {
  position: absolute;
  left: 26px;
  top: 28px;
  color: var(--cyan);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
}
.ja-capability h3,
.ja-defense-step h3,
.ja-industrial-card h3 { margin-bottom: 10px; font-size: 19px; }
.ja-capability p,
.ja-defense-step p,
.ja-industrial-card p { color: var(--ink-dim); font-size: 14.5px; line-height: 1.8; }

/* 立体防护：从可信启动到自研内核的连续防护链。 */
.ja-defense-flow { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.ja-defense-flow::before {
  content: "";
  position: absolute;
  left: 7%;
  right: 7%;
  top: 31px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--teal), transparent);
  box-shadow: 0 0 15px rgba(34, 211, 238, .45);
}
.ja-defense-step { position: relative; text-align: center; }
.ja-defense-no {
  position: relative;
  z-index: 1;
  display: grid;
  width: 62px;
  height: 62px;
  margin: 0 auto 24px;
  place-items: center;
  border: 1px solid rgba(103, 232, 249, .48);
  border-radius: 50%;
  background: #071526;
  color: var(--cyan);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-weight: 800;
  box-shadow: 0 0 28px rgba(34, 211, 238, .16);
}
.ja-defense-body {
  min-height: 250px;
  padding: 30px 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--ja-panel);
}

/* 产业化：强调工程平衡而不是重复普通卡片。 */
.ja-industrial-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.ja-industrial-card {
  position: relative;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 22px;
  min-height: 190px;
  padding: 32px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--ja-panel);
  overflow: hidden;
}
.ja-industrial-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 3px;
  border-radius: 3px;
  background: var(--grad-main);
}
.ja-industrial-mark {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: rgba(34, 211, 238, .07);
  color: var(--cyan);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 15px;
  font-weight: 800;
}

.ja-metric-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--panel, rgba(10, 20, 36, .9));
}
.ja-metric { min-width: 0; padding: 40px 20px; border-right: 1px solid var(--line); text-align: center; }
.ja-metric:last-child { border-right: 0; }
.ja-metric strong { font-size: clamp(32px, 4vw, 52px); }
.ja-metric em { margin-left: 5px; color: var(--cyan); font-style: normal; font-weight: 700; }
.ja-metric span { display: block; margin-top: 10px; color: var(--ink-dim); }
.ja-note { max-width: 960px; margin: 24px auto 0; color: var(--ink-faint); font-size: 13px; text-align: center; }

/* 行业应用：从标签升级为可识别的场景卡。 */
.ja-apps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.ja-app-card {
  position: relative;
  min-height: 170px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: radial-gradient(circle at 100% 0%, rgba(34, 211, 238, .12), transparent 46%), var(--ja-panel);
}
.ja-app-no { display: block; margin-bottom: 28px; color: var(--cyan); font-family: "SFMono-Regular", Consolas, monospace; font-size: 12px; letter-spacing: .18em; }
.ja-app-card strong { display: block; font-size: 20px; }
.ja-app-card em { display: block; margin-top: 8px; color: var(--ink-faint); font-size: 9px; font-style: normal; letter-spacing: .13em; }

.ja-conclusion { padding: 0 0 112px; }
.ja-center-kicker,
.ja-center-actions { justify-content: center; }
.ja-center-kicker::after { content: ""; width: 34px; height: 1px; background: var(--grad-main); }

/* 非交互信息卡不使用“可点击式”大幅悬浮，避免错误交互暗示。 */
.ja-capability,
.ja-defense-body,
.ja-industrial-card,
.ja-app-card { transition: border-color .3s, background-color .3s, box-shadow .3s; }
.ja-capability:hover,
.ja-defense-step:hover .ja-defense-body,
.ja-industrial-card:hover,
.ja-app-card:hover { border-color: var(--line-strong); box-shadow: inset 0 1px 0 rgba(103, 232, 249, .08); }

@media (max-width: 1000px) {
  .ja-hero { min-height: auto; }
  .ja-defense-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ja-defense-flow::before { display: none; }
  .ja-metric-grid,
  .ja-apps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ja-metric:nth-child(2) { border-right: 0; }
  .ja-metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 720px) {
  .ja700-page section[id] { scroll-margin-top: 112px; }
  .ja-hero { padding: 118px 0 72px; }
  .ja-hero h1 { font-size: clamp(36px, 12vw, 52px); }
  .ja-product-name { font-size: 23px; }
  .ja-hero .lead { text-align: center; }
  .ja-subnav { top: 64px; }
  .ja-subnav .wrap { justify-content: flex-start; width: 100%; padding: 0 4vw; }
  .ja-subnav a { padding: 12px 13px; font-size: 12px; }
  .ja-section { padding: 82px 0; }
  .ja-head { margin-bottom: 38px; }
  .ja-head h2 { font-size: clamp(30px, 9vw, 42px); }
  .ja-head p { font-size: 15px; line-height: 1.8; }
  .ja-architecture-board { padding: 22px 16px; border-radius: 20px; }
  .ja-core { margin-bottom: 22px; padding: 22px 18px; }
  .ja-core::before,
  .ja-core::after { display: none; }
  .ja-capability { flex-basis: 100%; min-width: 0; padding: 24px 22px 24px 64px; }
  .ja-capability-index { left: 22px; top: 24px; }
  .ja-defense-flow,
  .ja-industrial-grid { grid-template-columns: 1fr; }
  .ja-defense-step { display: grid; grid-template-columns: 54px 1fr; gap: 14px; text-align: left; }
  .ja-defense-no { width: 54px; height: 54px; margin: 0; }
  .ja-defense-body { min-height: 0; padding: 24px 22px; }
  .ja-industrial-card { grid-template-columns: 50px 1fr; gap: 16px; min-height: 0; padding: 26px 22px; }
  .ja-industrial-mark { width: 48px; height: 48px; }
}

@media (max-width: 520px) {
  .ja-metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ja-metric { padding: 28px 10px; }
  .ja-metric strong { font-size: clamp(25px, 8vw, 34px); }
  .ja-metric em { display: block; margin: 2px 0 0; font-size: 12px; }
  .ja-metric span { padding: 0 6px; font-size: 12px; }
  .ja-apps { grid-template-columns: 1fr; }
  .ja-app-card { min-height: 130px; }
}

@media (prefers-reduced-motion: reduce) {
  .ja700-page *,
  .ja700-page *::before,
  .ja700-page *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .ja700-page .reveal { opacity: 1; transform: none; }
}