/* =============================================================
   荣朗智慧照明解决方案 · 独立样式 v4（第一视觉版）
   设计理念: 全屏大气 HERO · 章节编号叙事 · 深浅节奏 · 大留白呼吸感
   关键修复: 统一 reset 只保留 box-sizing，不再清零 margin/padding
             （全局 style.css 已有 * reset，特异性冲突会吃掉组件间距）
   ============================================================= */

/* ---------- 设计令牌 ---------- */
#sl-page {
  /* 深色阶 */
  --sl-ink-950: #050a18;
  --sl-ink-900: #0a1124;
  --sl-ink-800: #0f1a30;
  --sl-ink-700: #18243f;
  --sl-ink-600: #233355;

  /* 科技主色 */
  --sl-blue: #4f8cff;
  --sl-blue-deep: #2563eb;
  --sl-cyan: #22d3ee;
  --sl-cyan-deep: #0891b2;
  --sl-purple: #8b5cf6;
  --sl-green: #10b981;
  --sl-red: #ef4444;
  --sl-amber: #fbbf24;

  /* 浅色阶 */
  --sl-paper: #ffffff;
  --sl-paper-2: #f6f8fc;
  --sl-paper-3: #eef2f9;
  --sl-paper-4: #e3e9f3;

  /* 文字 */
  --sl-ink: #0b1220;
  --sl-ink-soft: #475569;
  --sl-ink-muted: #94a3b8;
  --sl-ink-faint: #cbd5e1;

  /* 呼吸感节奏 */
  --sl-sec-y: clamp(120px, 11vw, 190px);
  --sl-head-mb: clamp(64px, 7vw, 110px);

  /* 圆角 */
  --sl-radius: 24px;
  --sl-radius-md: 18px;
  --sl-radius-sm: 14px;
}

/* ---------- 基础 ---------- */
#sl-page {
  background: var(--sl-paper);
  color: var(--sl-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.8;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
/* 只重置盒模型 —— 严禁在此清零 margin/padding */
#sl-page *,
#sl-page *::before,
#sl-page *::after { box-sizing: border-box; }

#sl-page .container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 48px;
  width: 100%;
}

/* ---------- 滚动渐入 ---------- */
#sl-page .sl-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
#sl-page .sl-reveal[data-delay="1"] { transition-delay: 0.1s; }
#sl-page .sl-reveal[data-delay="2"] { transition-delay: 0.2s; }
#sl-page .sl-reveal[data-delay="3"] { transition-delay: 0.3s; }
#sl-page .sl-reveal[data-delay="4"] { transition-delay: 0.4s; }
#sl-page .sl-reveal[data-delay="5"] { transition-delay: 0.5s; }
#sl-page .sl-reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  #sl-page .sl-reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 按钮 ---------- */
#sl-page .sl-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 34px;
  border-radius: var(--sl-radius-sm);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  line-height: 1.4;
}
#sl-page .sl-btn--primary {
  background: linear-gradient(135deg, var(--sl-blue), var(--sl-cyan-deep));
  color: #fff;
  box-shadow: 0 8px 30px rgba(79, 140, 255, 0.4);
}
#sl-page .sl-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(79, 140, 255, 0.55);
}
#sl-page .sl-btn--ghost {
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(6px);
}
#sl-page .sl-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(34, 211, 238, 0.55);
  color: var(--sl-cyan);
}
#sl-page .sl-btn--light {
  background: #fff;
  color: var(--sl-blue-deep);
  box-shadow: 0 8px 30px rgba(2, 8, 24, 0.35);
}
#sl-page .sl-btn--light:hover { transform: translateY(-2px); box-shadow: 0 14px 44px rgba(2, 8, 24, 0.45); }
#sl-page .sl-btn--outline-light {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(6px);
}
#sl-page .sl-btn--outline-light:hover { background: rgba(255, 255, 255, 0.16); border-color: #fff; }

/* ============================================================
   HERO · 全屏第一视觉
   ============================================================ */
#sl-page .sl-hero {
  position: relative;
  color: #fff;
  background: var(--sl-ink-950);
}
#sl-page .sl-hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse 62% 46% at 50% -6%, rgba(79, 140, 255, 0.20) 0%, transparent 58%),
    radial-gradient(ellipse 42% 34% at 12% 88%, rgba(34, 211, 238, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 42% 34% at 88% 82%, rgba(139, 92, 246, 0.10) 0%, transparent 55%),
    linear-gradient(168deg, var(--sl-ink-950) 0%, var(--sl-ink-800) 52%, var(--sl-ink-900) 100%);
}
#sl-page .sl-hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.024) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 36%, #000 20%, transparent 82%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 36%, #000 20%, transparent 82%);
}
/* 同心轨道环 · 右侧大气装饰 */
#sl-page .sl-hero__rings {
  position: absolute;
  top: 42%;
  right: -260px;
  width: 900px;
  height: 900px;
  transform: translateY(-50%);
  pointer-events: none;
}
#sl-page .sl-hero__rings span {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(120, 170, 255, 0.14);
}
#sl-page .sl-hero__rings span:nth-child(1) {
  inset: 0;
  border-color: rgba(120, 170, 255, 0.10);
}
#sl-page .sl-hero__rings span:nth-child(2) {
  inset: 130px;
  border-style: dashed;
  border-color: rgba(34, 211, 238, 0.16);
  animation: sl-spin 60s linear infinite;
}
#sl-page .sl-hero__rings span:nth-child(3) {
  inset: 280px;
  border-color: rgba(79, 140, 255, 0.22);
  box-shadow: inset 0 0 90px rgba(79, 140, 255, 0.12), 0 0 90px rgba(34, 211, 238, 0.08);
}
@keyframes sl-spin { to { transform: rotate(360deg); } }

#sl-page .sl-hero .container {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding-top: 128px;
  padding-bottom: 0;
}

/* 面包屑 */
#sl-page .sl-hero__bc {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.38);
  margin-bottom: 24px;
}
#sl-page .sl-hero__bc a { color: rgba(255, 255, 255, 0.38); text-decoration: none; transition: color 0.2s; }
#sl-page .sl-hero__bc a:hover { color: var(--sl-cyan); }
#sl-page .sl-hero__bc i { font-size: 9px; opacity: 0.5; }

/* Hero 主体 · 垂直居中 */
#sl-page .sl-hero__center {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 36px 0 52px;
}
#sl-page .sl-hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 26px;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.16), rgba(34, 211, 238, 0.10));
  border: 1px solid rgba(79, 140, 255, 0.38);
  border-radius: 100px;
  font-size: 12px;
  letter-spacing: 3px;
  color: #93c5fd;
  margin-bottom: 36px;
  font-weight: 500;
  backdrop-filter: blur(6px);
}
#sl-page .sl-hero__tag i { font-size: 13px; color: var(--sl-cyan); }
#sl-page .sl-hero h1 {
  font-size: clamp(40px, 5.4vw, 68px);
  font-weight: 800;
  line-height: 1.12;
  margin-bottom: 30px;
  letter-spacing: -1px;
  color: transparent;
  background: linear-gradient(135deg, #ffffff 8%, #c4d9ff 55%, #7dd3fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
#sl-page .sl-hero__subtitle {
  font-size: clamp(17px, 2vw, 22px);
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 24px;
  font-weight: 400;
  letter-spacing: 1px;
}
#sl-page .sl-hero__desc {
  font-size: 15.5px;
  color: rgba(255, 255, 255, 0.52);
  margin-bottom: 52px;
  max-width: 660px;
  line-height: 2;
}
#sl-page .sl-hero__actions { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }

/* Hero 底部悬浮条 · 数据 + 视频入口 */
#sl-page .sl-hero__bar {
  display: flex;
  align-items: center;
  gap: clamp(28px, 4vw, 64px);
  padding: 34px 56px;
  background: rgba(12, 21, 42, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 22px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 34px 90px rgba(2, 6, 18, 0.55);
  margin-bottom: -76px;               /* 下压悬浮，与下一章形成层次 */
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  max-width: 1080px;
  position: relative;
  z-index: 5;
}
#sl-page .sl-hero__stat { flex: 1; text-align: center; }
#sl-page .sl-hero__stat strong {
  display: block;
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  color: transparent;
  background: linear-gradient(135deg, var(--sl-cyan), var(--sl-blue));
  -webkit-background-clip: text;
  background-clip: text;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 6px;
}
#sl-page .sl-hero__stat span {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 2px;
}
#sl-page .sl-hero__divider {
  width: 1px;
  align-self: stretch;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.18), transparent);
}
#sl-page .sl-hero__video {
  display: flex;
  align-items: center;
  gap: 18px;
  cursor: pointer;
  flex: 1.35;
  min-width: 0;
}
#sl-page .sl-hero__video-icon {
  position: relative;
  flex-shrink: 0;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.28), rgba(34, 211, 238, 0.22));
  border: 1.5px solid rgba(34, 211, 238, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
  transition: all 0.3s;
}
#sl-page .sl-hero__video-icon i { color: #fff; font-size: 17px; margin-left: 3px; }
#sl-page .sl-hero__video-icon::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1.5px solid rgba(34, 211, 238, 0.35);
  animation: sl-pulse 2.6s ease-out infinite;
}
@keyframes sl-pulse {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.65); opacity: 0; }
}
#sl-page .sl-hero__video:hover .sl-hero__video-icon {
  background: linear-gradient(135deg, var(--sl-blue), var(--sl-cyan));
  border-color: var(--sl-cyan);
  box-shadow: 0 0 36px rgba(34, 211, 238, 0.55);
}
#sl-page .sl-hero__video-text { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
#sl-page .sl-hero__video-text strong { font-size: 15.5px; font-weight: 600; color: rgba(255, 255, 255, 0.92); }
#sl-page .sl-hero__video-text em { font-style: normal; font-size: 12px; color: rgba(255, 255, 255, 0.42); letter-spacing: 0.5px; }

/* ============================================================
   通用章节系统 · 大留白 + 居中 + 编号水印
   ============================================================ */
#sl-page .sl-section {
  padding: var(--sl-sec-y) 0;
  position: relative;
}
#sl-page .sl-section--tint { background: var(--sl-paper-2); }
#sl-page .sl-section--dark {
  background: var(--sl-ink-950);
  color: #fff;
  overflow: hidden;
}
#sl-page .sl-section--dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 38% at 14% 12%, rgba(79, 140, 255, 0.09) 0%, transparent 58%),
    radial-gradient(ellipse 48% 36% at 86% 88%, rgba(34, 211, 238, 0.07) 0%, transparent 55%);
  pointer-events: none;
}
#sl-page .sl-section--dark .container { position: relative; z-index: 1; }

/* 章节头 · 居中 + 巨型编号水印 */
#sl-page .sl-section__head {
  position: relative;
  max-width: 860px;
  margin: 0 auto var(--sl-head-mb);
  text-align: center;
}
#sl-page .sl-section__head::before {
  content: attr(data-num);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -54%);
  font-size: clamp(130px, 16vw, 210px);
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(79, 140, 255, 0.13);
  letter-spacing: 12px;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  z-index: 0;
}
#sl-page .sl-section--dark .sl-section__head::before {
  -webkit-text-stroke-color: rgba(130, 175, 255, 0.12);
}
#sl-page .sl-section__eyebrow {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 12.5px;
  letter-spacing: 3.5px;
  color: var(--sl-blue);
  font-weight: 700;
  margin-bottom: 28px;
  text-transform: uppercase;
}
#sl-page .sl-section__eyebrow::before,
#sl-page .sl-section__eyebrow::after {
  content: '';
  width: 40px;
  height: 1.5px;
  border-radius: 2px;
}
#sl-page .sl-section__eyebrow::before { background: linear-gradient(90deg, transparent, var(--sl-blue)); }
#sl-page .sl-section__eyebrow::after { background: linear-gradient(90deg, var(--sl-blue), transparent); }
#sl-page .sl-section--dark .sl-section__eyebrow { color: var(--sl-cyan); }
#sl-page .sl-section--dark .sl-section__eyebrow::before { background: linear-gradient(90deg, transparent, var(--sl-cyan)); }
#sl-page .sl-section--dark .sl-section__eyebrow::after { background: linear-gradient(90deg, var(--sl-cyan), transparent); }
#sl-page .sl-section__title {
  position: relative;
  z-index: 1;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 28px;
  letter-spacing: -0.5px;
  color: var(--sl-ink);
}
#sl-page .sl-section--dark .sl-section__title { color: #fff; }
#sl-page .sl-section__lead {
  position: relative;
  z-index: 1;
  font-size: 17px;
  color: var(--sl-ink-soft);
  max-width: 720px;
  margin: 0 auto;
  line-height: 2;
}
#sl-page .sl-section--dark .sl-section__lead { color: rgba(255, 255, 255, 0.58); }

/* 章节间过渡金句 */
#sl-page .sl-transition-line {
  margin-top: clamp(56px, 6vw, 88px);
  text-align: center;
  font-size: clamp(19px, 2.2vw, 26px);
  font-weight: 700;
  color: var(--sl-ink);
  letter-spacing: 1px;
}
#sl-page .sl-transition-line::before {
  content: '';
  display: block;
  width: 56px;
  height: 3px;
  border-radius: 3px;
  margin: 0 auto 32px;
  background: linear-gradient(90deg, var(--sl-blue), var(--sl-cyan));
}

/* ============================================================
   图片占位框
   ============================================================ */
#sl-page .sl-img-slot {
  position: relative;
  background: linear-gradient(135deg, #eef2f9, #dfe6f1);
  border: 2px dashed #b8c2d4;
  border-radius: var(--sl-radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #7a8699;
  text-align: center;
  overflow: hidden;
  min-height: 260px;
}
#sl-page .sl-img-slot::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(45deg, rgba(79, 140, 255, 0.04) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(79, 140, 255, 0.04) 25%, transparent 25%);
  background-size: 24px 24px;
}
#sl-page .sl-img-slot > * { position: relative; z-index: 1; }
#sl-page .sl-img-slot i { font-size: 40px; margin-bottom: 14px; opacity: 0.55; color: var(--sl-blue); }
#sl-page .sl-img-slot__label { font-size: 14px; font-weight: 600; letter-spacing: 0.5px; color: #5d6b82; }
#sl-page .sl-img-slot__hint { font-size: 11px; color: #93a0b5; margin-top: 6px; }
#sl-page .sl-img-slot img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--sl-radius-md);
}

/* ============================================================
   01 · 时代机遇 · 三张政策卡
   ============================================================ */
#sl-page .sl-drivers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
#sl-page .sl-driver {
  position: relative;
  padding: 48px 42px;
  background: var(--sl-paper);
  border: 1px solid var(--sl-paper-4);
  border-radius: var(--sl-radius);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}
#sl-page .sl-driver::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent, var(--sl-blue)), transparent 82%);
}
#sl-page .sl-driver--blue { --accent: var(--sl-blue); }
#sl-page .sl-driver--cyan { --accent: var(--sl-cyan); }
#sl-page .sl-driver--purple { --accent: var(--sl-purple); }
#sl-page .sl-driver:hover {
  transform: translateY(-8px);
  box-shadow: 0 28px 64px rgba(15, 23, 42, 0.10);
  border-color: transparent;
}
#sl-page .sl-driver__icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 27px;
  margin-bottom: 30px;
  position: relative;
  z-index: 1;
}
#sl-page .sl-driver--blue .sl-driver__icon {
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.13), rgba(37, 99, 235, 0.08));
  color: var(--sl-blue);
}
#sl-page .sl-driver--cyan .sl-driver__icon {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.13), rgba(8, 145, 178, 0.08));
  color: var(--sl-cyan-deep);
}
#sl-page .sl-driver--purple .sl-driver__icon {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.13), rgba(109, 40, 217, 0.08));
  color: var(--sl-purple);
}
#sl-page .sl-driver__tag {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent, var(--sl-blue));
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 20px;
  background: rgba(79, 140, 255, 0.08);
  border: 1px solid rgba(79, 140, 255, 0.16);
}
#sl-page .sl-driver--cyan .sl-driver__tag { color: var(--sl-cyan-deep); background: rgba(34, 211, 238, 0.08); border-color: rgba(34, 211, 238, 0.18); }
#sl-page .sl-driver--purple .sl-driver__tag { color: var(--sl-purple); background: rgba(139, 92, 246, 0.08); border-color: rgba(139, 92, 246, 0.18); }
#sl-page .sl-driver h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--sl-ink);
  margin-bottom: 22px;
  letter-spacing: -0.2px;
}
#sl-page .sl-driver ul { list-style: none; }
#sl-page .sl-driver li {
  padding: 10px 0 10px 28px;
  font-size: 15px;
  color: var(--sl-ink-soft);
  position: relative;
  line-height: 1.8;
}
#sl-page .sl-driver li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 21px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent, var(--sl-blue));
  opacity: 0.75;
}

/* ============================================================
   02 · 现场痛点 · 四联卡
   ============================================================ */
#sl-page .sl-challenges {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
#sl-page .sl-challenge {
  position: relative;
  padding: 44px 34px;
  background: var(--sl-paper);
  border: 1px solid var(--sl-paper-4);
  border-radius: var(--sl-radius);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}
#sl-page .sl-challenge::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--sl-red), var(--sl-amber));
  opacity: 0;
  transition: opacity 0.3s;
}
#sl-page .sl-challenge:hover { transform: translateY(-8px); box-shadow: 0 28px 64px rgba(15, 23, 42, 0.10); border-color: transparent; }
#sl-page .sl-challenge:hover::after { opacity: 1; }
#sl-page .sl-challenge__num {
  position: absolute;
  top: 22px;
  right: 28px;
  font-size: 46px;
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(239, 68, 68, 0.28);
  letter-spacing: 2px;
}
#sl-page .sl-challenge__icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.10), rgba(251, 191, 36, 0.10));
  color: var(--sl-red);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 26px;
}
#sl-page .sl-challenge h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--sl-ink);
  margin-bottom: 14px;
}
#sl-page .sl-challenge p {
  font-size: 14.5px;
  color: var(--sl-ink-soft);
  line-height: 1.85;
  margin-bottom: 24px;
}
#sl-page .sl-challenge__tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: #b4443c;
  background: rgba(239, 68, 68, 0.07);
  border: 1px solid rgba(239, 68, 68, 0.16);
  padding: 5px 14px;
  border-radius: 100px;
}

/* ============================================================
   03 · 需求解方 · 三重需求 + 核心诉求面板
   ============================================================ */
#sl-page .sl-needs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 36px;
  margin-bottom: 48px;
}
#sl-page .sl-need {
  display: flex;
  gap: 22px;
  align-items: flex-start;
  padding: 36px 32px;
  background: var(--sl-paper);
  border: 1px solid var(--sl-paper-4);
  border-radius: var(--sl-radius);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
#sl-page .sl-need:hover { transform: translateY(-6px); box-shadow: 0 24px 56px rgba(15, 23, 42, 0.09); border-color: transparent; }
#sl-page .sl-need__icon {
  flex-shrink: 0;
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}
#sl-page .sl-need--green .sl-need__icon { background: rgba(16, 185, 129, 0.10); color: var(--sl-green); }
#sl-page .sl-need--red .sl-need__icon { background: rgba(239, 68, 68, 0.09); color: var(--sl-red); }
#sl-page .sl-need--blue .sl-need__icon { background: rgba(79, 140, 255, 0.10); color: var(--sl-blue); }
#sl-page .sl-need h3 { font-size: 19px; font-weight: 700; color: var(--sl-ink); margin-bottom: 8px; }
#sl-page .sl-need p { font-size: 14.5px; color: var(--sl-ink-soft); line-height: 1.8; }

/* 核心诉求渐变面板 */
#sl-page .sl-demands {
  position: relative;
  padding: clamp(40px, 4.5vw, 64px) clamp(32px, 4vw, 64px);
  border-radius: var(--sl-radius);
  background:
    radial-gradient(ellipse 60% 90% at 8% 0%, rgba(79, 140, 255, 0.10) 0%, transparent 55%),
    radial-gradient(ellipse 50% 80% at 95% 100%, rgba(34, 211, 238, 0.09) 0%, transparent 55%),
    linear-gradient(135deg, #f2f6ff 0%, #e9f1fb 100%);
  border: 1px solid rgba(79, 140, 255, 0.14);
  overflow: hidden;
}
#sl-page .sl-demands__head {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 40px;
}
#sl-page .sl-demands__head span {
  font-size: 21px;
  font-weight: 800;
  color: var(--sl-ink);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
#sl-page .sl-demands__head i {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, rgba(79, 140, 255, 0.35), transparent);
}
#sl-page .sl-demands__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
#sl-page .sl-demand { position: relative; }
#sl-page .sl-demand__num {
  display: block;
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  color: transparent;
  background: linear-gradient(135deg, var(--sl-blue), var(--sl-cyan));
  -webkit-background-clip: text;
  background-clip: text;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}
#sl-page .sl-demand h3 { font-size: 17.5px; font-weight: 700; color: var(--sl-ink); margin-bottom: 10px; }
#sl-page .sl-demand p { font-size: 14.5px; color: var(--sl-ink-soft); line-height: 1.8; }

/* ============================================================
   04 · 系统架构（深色）
   ============================================================ */
#sl-page .sl-arch__nodes {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 52px;
}
#sl-page .sl-arch__node {
  position: relative;
  padding: 48px 40px;
  background: rgba(255, 255, 255, 0.032);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--sl-radius);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}
#sl-page .sl-arch__node:hover {
  transform: translateY(-8px);
  border-color: rgba(34, 211, 238, 0.35);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.4);
}
#sl-page .sl-arch__node--sensing::before,
#sl-page .sl-arch__node--transport::before,
#sl-page .sl-arch__node--platform::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--sl-blue), transparent 85%);
}
#sl-page .sl-arch__node--transport::before { background: linear-gradient(90deg, var(--sl-cyan), transparent 85%); }
#sl-page .sl-arch__node--platform::before { background: linear-gradient(90deg, var(--sl-purple), transparent 85%); }
#sl-page .sl-arch__step {
  width: 66px;
  height: 66px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 27px;
  margin-bottom: 28px;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.18), rgba(34, 211, 238, 0.10));
  border: 1px solid rgba(79, 140, 255, 0.30);
  color: var(--sl-cyan);
}
#sl-page .sl-arch__node--transport .sl-arch__step { border-color: rgba(34, 211, 238, 0.35); }
#sl-page .sl-arch__node--platform .sl-arch__step { border-color: rgba(139, 92, 246, 0.35); color: #c4b5fd; }
#sl-page .sl-arch__label {
  font-size: 11.5px;
  letter-spacing: 3px;
  color: rgba(255, 255, 255, 0.35);
  margin-bottom: 12px;
  font-weight: 600;
}
#sl-page .sl-arch__node h3 {
  font-size: 23px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
#sl-page .sl-arch__node > p {
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.9;
  margin-bottom: 28px;
}
#sl-page .sl-arch__features { display: flex; flex-wrap: wrap; gap: 10px; }
#sl-page .sl-arch__features span {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.68);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  padding: 7px 16px;
  border-radius: 100px;
}

/* 数据链路 · 端到端路径 */
#sl-page .sl-arch__path {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  padding: 30px 40px;
  background: rgba(255, 255, 255, 0.028);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--sl-radius-md);
}
#sl-page .sl-arch__path span {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.82);
}
#sl-page .sl-arch__path span i { color: var(--sl-cyan); font-size: 16px; }
#sl-page .sl-arch__path > i { color: rgba(255, 255, 255, 0.25); font-size: 11px; }

/* ============================================================
   05 · 智能硬件 · 双大卡（图文交替）
   ============================================================ */
#sl-page .sl-products { display: flex; flex-direction: column; gap: 48px; }
#sl-page .sl-product {
  display: grid;
  grid-template-columns: minmax(320px, 460px) 1fr;
  background: var(--sl-paper);
  border: 1px solid var(--sl-paper-4);
  border-radius: var(--sl-radius);
  overflow: hidden;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
#sl-page .sl-product:hover {
  box-shadow: 0 32px 80px rgba(15, 23, 42, 0.10);
  border-color: rgba(79, 140, 255, 0.25);
  transform: translateY(-4px);
}
#sl-page .sl-product--flip { grid-template-columns: 1fr minmax(320px, 460px); }
#sl-page .sl-product--flip .sl-product__img { order: 2; }
#sl-page .sl-product__img { min-height: 340px; }
#sl-page .sl-product__body { padding: clamp(36px, 4vw, 60px); }
#sl-page .sl-product__tag {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 2.5px;
  color: var(--sl-blue);
  background: rgba(79, 140, 255, 0.08);
  border: 1px solid rgba(79, 140, 255, 0.18);
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 18px;
}
#sl-page .sl-product__body > h3,
#sl-page .sl-product__body > ul + * { margin-top: 0; }
#sl-page .sl-product__body > h3 {
  font-size: 26px;
  font-weight: 800;
  color: var(--sl-ink);
  margin-bottom: 30px;
  letter-spacing: -0.3px;
}
#sl-page .sl-product__group { margin-bottom: 26px; }
#sl-page .sl-product__group:last-child { margin-bottom: 0; }
#sl-page .sl-product__group h4 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--sl-ink);
  margin-bottom: 14px;
}
#sl-page .sl-product__group h4 i { color: var(--sl-blue); font-size: 15px; }
#sl-page .sl-product__group ul { list-style: none; }
#sl-page .sl-product__group li {
  position: relative;
  padding: 6px 0 6px 24px;
  font-size: 14.5px;
  color: var(--sl-ink-soft);
  line-height: 1.8;
}
#sl-page .sl-product__group li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 17px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--sl-blue), var(--sl-cyan));
}
#sl-page .sl-product__feats { list-style: none; display: flex; flex-direction: column; gap: 22px; }
#sl-page .sl-product__feats li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
#sl-page .sl-product__feats li > i {
  flex-shrink: 0;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  background: rgba(79, 140, 255, 0.09);
  color: var(--sl-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 19px;
}
#sl-page .sl-product__feats h4 { font-size: 16px; font-weight: 700; color: var(--sl-ink); margin-bottom: 5px; }
#sl-page .sl-product__feats p { font-size: 14.5px; color: var(--sl-ink-soft); line-height: 1.75; }

/* ============================================================
   06 · 管理平台 · 仪表盘 + 六大功能
   ============================================================ */
#sl-page .sl-platform-wrap {
  display: grid;
  grid-template-columns: minmax(320px, 440px) 1fr;
  gap: clamp(40px, 5vw, 72px);
  align-items: start;
}

/* 仪表盘 mock */
#sl-page .sl-dashboard {
  position: sticky;
  top: 110px;
  background: var(--sl-ink-900);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--sl-radius);
  overflow: hidden;
  box-shadow: 0 34px 90px rgba(10, 17, 36, 0.35);
}
#sl-page .sl-dashboard__topbar {
  display: flex;
  gap: 8px;
  padding: 15px 20px;
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
#sl-page .sl-dashboard__topbar span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, 0.14); }
#sl-page .sl-dashboard__topbar span:nth-child(1) { background: #ff5f57; }
#sl-page .sl-dashboard__topbar span:nth-child(2) { background: #febc2e; }
#sl-page .sl-dashboard__topbar span:nth-child(3) { background: #28c840; }
#sl-page .sl-dashboard__body { display: flex; min-height: 380px; }
#sl-page .sl-dashboard__sidebar {
  width: 56px;
  padding: 18px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
}
#sl-page .sl-dashboard__sidebar div { width: 26px; height: 26px; border-radius: 8px; background: rgba(255, 255, 255, 0.08); }
#sl-page .sl-dashboard__sidebar div.active { background: linear-gradient(135deg, var(--sl-blue), var(--sl-cyan)); box-shadow: 0 0 18px rgba(79, 140, 255, 0.5); }
#sl-page .sl-dashboard__main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-auto-rows: minmax(80px, auto);
  gap: 14px;
  padding: 20px;
}
#sl-page .sl-dashboard__card {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
#sl-page .sl-dashboard__card--tall { grid-row: span 2; }
#sl-page .sl-dashboard__card .bar { border-radius: 6px; background: rgba(255, 255, 255, 0.10); }
#sl-page .sl-dashboard__card .bar.l { height: 10px; width: 82%; }
#sl-page .sl-dashboard__card .bar.m { height: 10px; width: 56%; }
#sl-page .sl-dashboard__card .bar.s { height: 10px; width: 34%; }
#sl-page .sl-dashboard__card .chart {
  flex: 1;
  min-height: 120px;
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(79, 140, 255, 0.30), rgba(34, 211, 238, 0.05)),
    repeating-linear-gradient(0deg, transparent 0 23px, rgba(255, 255, 255, 0.05) 23px 24px);
  mask-image: linear-gradient(115deg, #000 55%, transparent 92%);
  -webkit-mask-image: linear-gradient(115deg, #000 55%, transparent 92%);
}
#sl-page .sl-dashboard__hint {
  padding: 12px;
  text-align: center;
  border-top: 1px dashed rgba(255, 255, 255, 0.10);
}
#sl-page .sl-dashboard__hint span { font-size: 12px; color: rgba(255, 255, 255, 0.35); letter-spacing: 1px; }

/* 六大功能 */
#sl-page .sl-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
#sl-page .sl-feature {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  padding: 30px 32px;
  background: var(--sl-paper);
  border: 1px solid var(--sl-paper-4);
  border-radius: var(--sl-radius-md);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
#sl-page .sl-feature:hover {
  transform: translateX(6px);
  border-color: rgba(79, 140, 255, 0.35);
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}
#sl-page .sl-feature__icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.12), rgba(34, 211, 238, 0.08));
  color: var(--sl-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
}
#sl-page .sl-feature__body { min-width: 0; flex: 1; }
#sl-page .sl-feature__body > h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--sl-ink);
  margin-bottom: 12px;
}
#sl-page .sl-feature__sub { list-style: none; }
#sl-page .sl-feature__sub li {
  position: relative;
  padding: 4px 0 4px 20px;
  font-size: 14px;
  color: var(--sl-ink-soft);
  line-height: 1.8;
}
#sl-page .sl-feature__sub li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 15px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sl-cyan);
  opacity: 0.8;
}
#sl-page .sl-feature__tag {
  display: inline-block;
  margin-top: 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--sl-cyan-deep);
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.18);
  padding: 5px 16px;
  border-radius: 100px;
}
#sl-page .sl-feature__stats {
  display: flex;
  gap: 14px;
  margin: 4px 0 14px;
  flex-wrap: wrap;
}
#sl-page .sl-feature__stats > div {
  flex: 1;
  min-width: 120px;
  background: var(--sl-paper-2);
  border: 1px solid var(--sl-paper-4);
  border-radius: 12px;
  padding: 12px 16px;
}
#sl-page .sl-feature__stats strong { display: block; font-size: 13.5px; color: var(--sl-ink); margin-bottom: 2px; }
#sl-page .sl-feature__stats span { font-size: 12px; color: var(--sl-ink-muted); }

/* ============================================================
   07 · 应用场景（深色）· 四联卡
   ============================================================ */
#sl-page .sl-scenes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
#sl-page .sl-scene {
  position: relative;
  padding: 42px 32px;
  background: rgba(255, 255, 255, 0.032);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--sl-radius);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}
#sl-page .sl-scene::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--sl-blue), var(--sl-cyan));
  opacity: 0;
  transition: opacity 0.3s;
}
#sl-page .sl-scene:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.055);
  border-color: rgba(34, 211, 238, 0.32);
  box-shadow: 0 28px 64px rgba(0, 0, 0, 0.42);
}
#sl-page .sl-scene:hover::before { opacity: 1; }
#sl-page .sl-scene__icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.16), rgba(34, 211, 238, 0.10));
  border: 1px solid rgba(79, 140, 255, 0.28);
  color: var(--sl-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 23px;
  margin-bottom: 24px;
}
#sl-page .sl-scene h3 {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
#sl-page .sl-scene p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.52);
  line-height: 1.85;
  margin-bottom: 24px;
}
#sl-page .sl-scene__tags { display: flex; flex-wrap: wrap; gap: 8px; }
#sl-page .sl-scene__tags span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.62);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  padding: 5px 13px;
  border-radius: 100px;
}

/* ============================================================
   08 · 方案对比 · 双栏
   ============================================================ */
#sl-page .sl-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: stretch;
}
#sl-page .sl-compare__col {
  border-radius: var(--sl-radius);
  padding: 44px 42px;
  overflow: hidden;
}
#sl-page .sl-compare__col--old {
  background: var(--sl-paper-2);
  border: 1px solid var(--sl-paper-4);
}
#sl-page .sl-compare__col--new {
  position: relative;
  color: #fff;
  background:
    radial-gradient(ellipse 70% 55% at 85% 0%, rgba(34, 211, 238, 0.16) 0%, transparent 55%),
    linear-gradient(160deg, var(--sl-ink-800) 0%, var(--sl-ink-950) 100%);
  border: 1px solid rgba(79, 140, 255, 0.30);
  box-shadow: 0 30px 80px rgba(10, 17, 36, 0.35);
}
#sl-page .sl-compare__head {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 32px;
}
#sl-page .sl-compare__head > i {
  flex-shrink: 0;
  width: 54px;
  height: 54px;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}
#sl-page .sl-compare__col--old .sl-compare__head > i {
  background: rgba(100, 116, 139, 0.12);
  color: #64748b;
}
#sl-page .sl-compare__col--new .sl-compare__head > i {
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.25), rgba(34, 211, 238, 0.16));
  border: 1px solid rgba(34, 211, 238, 0.40);
  color: var(--sl-cyan);
}
#sl-page .sl-compare__head h3 { font-size: 21px; font-weight: 800; margin-bottom: 4px; }
#sl-page .sl-compare__col--old .sl-compare__head h3 { color: var(--sl-ink); }
#sl-page .sl-compare__head span { font-size: 13px; letter-spacing: 0.5px; }
#sl-page .sl-compare__col--old .sl-compare__head span { color: var(--sl-ink-muted); }
#sl-page .sl-compare__col--new .sl-compare__head span { color: rgba(255, 255, 255, 0.5); }
#sl-page .sl-compare__list { list-style: none; }
#sl-page .sl-compare__list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 13px 0;
  font-size: 14.5px;
  line-height: 1.75;
}
#sl-page .sl-compare__list li + li { border-top: 1px dashed rgba(100, 116, 139, 0.18); }
#sl-page .sl-compare__col--new .sl-compare__list li + li { border-top-color: rgba(255, 255, 255, 0.09); }
#sl-page .sl-compare__list li > i {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  margin-top: 3px;
}
#sl-page .sl-compare__col--old .sl-compare__list li { color: var(--sl-ink-soft); }
#sl-page .sl-compare__col--old .sl-compare__list li > i {
  background: rgba(239, 68, 68, 0.10);
  color: var(--sl-red);
}
#sl-page .sl-compare__col--new .sl-compare__list li { color: rgba(255, 255, 255, 0.85); }
#sl-page .sl-compare__col--new .sl-compare__list li > i {
  background: rgba(34, 211, 238, 0.16);
  color: var(--sl-cyan);
}

/* ============================================================
   09 · 实施流程 · 五步横向
   ============================================================ */
#sl-page .sl-steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 28px;
}
#sl-page .sl-steps::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 4%;
  right: 4%;
  height: 2px;
  background: linear-gradient(90deg, rgba(79, 140, 255, 0.05), rgba(79, 140, 255, 0.35) 20%, rgba(34, 211, 238, 0.35) 80%, rgba(34, 211, 238, 0.05));
  pointer-events: none;
}
#sl-page .sl-step {
  position: relative;
  text-align: left;
}
#sl-page .sl-step__num {
  position: relative;
  z-index: 1;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--sl-paper);
  border: 2px solid rgba(79, 140, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 800;
  color: var(--sl-blue);
  margin-bottom: 26px;
  box-shadow: 0 0 0 8px var(--sl-paper-2);
  font-variant-numeric: tabular-nums;
}
#sl-page .sl-step__icon {
  font-size: 26px;
  color: var(--sl-cyan-deep);
  margin-bottom: 16px;
}
#sl-page .sl-step h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--sl-ink);
  margin-bottom: 12px;
}
#sl-page .sl-step p {
  font-size: 14px;
  color: var(--sl-ink-soft);
  line-height: 1.85;
}

/* ============================================================
   10 · 核心价值 + CTA（深色）
   ============================================================ */
#sl-page .sl-values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  margin-bottom: clamp(64px, 7vw, 110px);
}
#sl-page .sl-value {
  position: relative;
  padding: 42px 34px;
  background: rgba(255, 255, 255, 0.032);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--sl-radius);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
#sl-page .sl-value:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.055);
  border-color: rgba(34, 211, 238, 0.32);
  box-shadow: 0 28px 64px rgba(0, 0, 0, 0.42);
}
#sl-page .sl-value__icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(79, 140, 255, 0.16), rgba(34, 211, 238, 0.10));
  border: 1px solid rgba(79, 140, 255, 0.28);
  color: var(--sl-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 23px;
  margin-bottom: 24px;
}
#sl-page .sl-value h3 {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}
#sl-page .sl-value p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.52);
  line-height: 1.85;
  margin-bottom: 22px;
}
#sl-page .sl-value strong {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: transparent;
  background: linear-gradient(90deg, var(--sl-cyan), var(--sl-blue));
  -webkit-background-clip: text;
  background-clip: text;
}

/* CTA 大横幅 */
#sl-page .sl-cta {
  position: relative;
  text-align: center;
  padding: clamp(56px, 6vw, 88px) clamp(32px, 5vw, 80px);
  border-radius: 28px;
  background:
    radial-gradient(ellipse 55% 80% at 12% 0%, rgba(255, 255, 255, 0.14) 0%, transparent 55%),
    linear-gradient(135deg, var(--sl-blue) 0%, var(--sl-blue-deep) 55%, #1d4ed8 100%);
  box-shadow: 0 40px 100px rgba(37, 99, 235, 0.35);
  overflow: hidden;
}
#sl-page .sl-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 90% at 50% 0%, #000 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 90% at 50% 0%, #000 20%, transparent 80%);
  pointer-events: none;
}
#sl-page .sl-cta > * { position: relative; z-index: 1; }
#sl-page .sl-cta h3 {
  font-size: clamp(26px, 3.2vw, 38px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: -0.3px;
}
#sl-page .sl-cta p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 40px;
}
#sl-page .sl-cta__actions {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 视频弹层（素材暂用 RLB159 占位） */
#sl-page .sl-video-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 4vw, 40px);
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
#sl-page .sl-video-modal.is-open { visibility: visible; opacity: 1; }
#sl-page .sl-video-modal__mask {
  position: absolute;
  inset: 0;
  background: rgba(3, 7, 18, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
#sl-page .sl-video-modal__body {
  position: relative;
  z-index: 1;
  width: min(960px, 100%);
}
#sl-page .sl-video-modal__body video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: #000;
  border-radius: 18px;
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.65), 0 0 0 1px rgba(79, 140, 255, 0.18);
}
#sl-page .sl-video-modal__close {
  position: absolute;
  top: -54px;
  right: 0;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 17px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s;
}
#sl-page .sl-video-modal__close:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: #fff;
  transform: rotate(90deg);
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1180px) {
  #sl-page .sl-challenges { grid-template-columns: repeat(2, 1fr); }
  #sl-page .sl-scenes { grid-template-columns: repeat(2, 1fr); }
  #sl-page .sl-values { grid-template-columns: repeat(2, 1fr); }
  #sl-page .sl-steps { grid-template-columns: repeat(3, 1fr); row-gap: 56px; }
  #sl-page .sl-steps::before { display: none; }
  #sl-page .sl-platform-wrap { grid-template-columns: 1fr; }
  #sl-page .sl-dashboard { position: static; max-width: 560px; margin: 0 auto; }
}

@media (max-width: 960px) {
  #sl-page .container { padding: 0 28px; }
  #sl-page .sl-drivers,
  #sl-page .sl-needs,
  #sl-page .sl-demands__grid { grid-template-columns: 1fr; gap: 28px; }
  #sl-page .sl-compare { grid-template-columns: 1fr; }
  #sl-page .sl-product,
  #sl-page .sl-product--flip { grid-template-columns: 1fr; }
  #sl-page .sl-product--flip .sl-product__img { order: 0; }
  #sl-page .sl-product__img { min-height: 280px; }
  #sl-page .sl-hero__rings { right: -420px; opacity: 0.6; }
}

@media (max-width: 720px) {
  #sl-page .container { padding: 0 20px; }
  #sl-page .sl-hero .container { padding-top: 110px; min-height: auto; }
  #sl-page .sl-hero__center { padding: 48px 0 72px; }
  #sl-page .sl-hero__bar {
    flex-direction: column;
    gap: 24px;
    padding: 28px 24px;
    margin-bottom: -120px;
  }
  #sl-page .sl-hero__divider { width: 100%; height: 1px; align-self: auto; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent); }
  #sl-page .sl-hero__stat { text-align: center; }
  #sl-page .sl-hero__video { width: 100%; }
  #sl-page .sl-hero__actions .sl-btn { width: 100%; justify-content: center; }
  #sl-page .sl-challenges,
  #sl-page .sl-scenes,
  #sl-page .sl-values,
  #sl-page .sl-steps { grid-template-columns: 1fr; }
  #sl-page .sl-arch__nodes { grid-template-columns: 1fr; }
  #sl-page .sl-arch__path { flex-direction: column; align-items: flex-start; }
  #sl-page .sl-arch__path > i { display: none; }
  #sl-page .sl-feature { flex-direction: column; gap: 18px; }
  #sl-page .sl-section__head { margin-bottom: 64px; }
}