/* ============================================================
   极越数字科技 · 官网样式
   风格：克制商务科技感 / 深炭黑 + 浅蓝 / 玻璃拟态 / 大量留白
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root {
  --bg: #0a0d13;
  --bg-soft: #0d1119;
  --text: #e9eef6;
  --text-2: #9aa7ba;
  --text-3: #5f6b7e;

  --blue: #8ecbff;
  --blue-deep: #4a90e2;
  --line: rgba(148, 178, 214, 0.14);
  --glass: linear-gradient(160deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.018));

  --radius: 16px;
  --nav-h: 76px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --font-sans: "Manrope", -apple-system, "PingFang SC", "HarmonyOS Sans SC",
    "MiSans", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", Consolas, monospace;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* hidden 属性优先级最高，防止作者样式覆盖导致元素仍占位/拦截事件 */
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 低透明度科技网格背景（全局，边缘淡出） */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(142, 203, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(142, 203, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 20%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 20%, #000 30%, transparent 100%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }

::selection { background: rgba(142, 203, 255, 0.25); color: #fff; }

.container { width: min(1180px, 92%); margin-inline: auto; position: relative; z-index: 1; }

/* ---------- 鼠标跟随光晕 ---------- */
.cursor-glow {
  position: fixed;
  top: 0; left: 0;
  width: 520px; height: 520px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle, rgba(120, 190, 255, 0.07), transparent 65%);
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.6s ease;
}
body.pointer-fine .cursor-glow { opacity: 1; }

/* ---------- 滚动驱动的板块环境光（明暗变化） ---------- */
@property --amb {
  syntax: "<color>";
  inherits: true;
  initial-value: rgba(74, 144, 226, 0);
}
.ambient {
  position: fixed;
  inset: -20%;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(
    ellipse 52% 42% at 62% var(--amb-y, 30%),
    var(--amb, transparent),
    transparent 68%
  );
  transition: --amb 1.4s ease, --amb-y 1.4s ease;
}

/* ---------- 鼠标滑动粒子拖尾画布 ---------- */
#trail {
  position: fixed;
  inset: 0;
  width: 100%;   /* 显式尺寸，确保缓冲区与视口 1:1 对齐 */
  height: 100%;
  z-index: 80; /* 位于内容之上、导航之下 */
  pointer-events: none;
}

/* ============================================================
   导航
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 13, 19, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { width: 36px; height: 36px; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 17px; font-weight: 700; letter-spacing: 0.06em; }
.brand-text em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.34em;
  color: var(--text-3);
}

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links > a:not(.btn) {
  position: relative;
  font-size: 14.5px;
  color: var(--text-2);
  letter-spacing: 0.04em;
  padding: 6px 0;
  transition: color 0.3s ease;
}
.nav-links > a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: linear-gradient(90deg, var(--blue), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav-links > a:not(.btn):hover { color: var(--text); }
.nav-links > a:not(.btn):hover::after { transform: scaleX(1); }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  align-items: center;
}
.nav-toggle span {
  width: 17px; height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.35s var(--ease), opacity 0.25s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  position: absolute;
  top: var(--nav-h); left: 0; right: 0;
  display: none;
  flex-direction: column;
  padding: 12px 5% 26px;
  background: rgba(10, 13, 19, 0.94);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--line);
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: all 0.35s var(--ease);
}
.mobile-menu a {
  padding: 14px 4px;
  font-size: 15.5px;
  color: var(--text-2);
  border-bottom: 1px solid rgba(148, 178, 214, 0.07);
  transition: color 0.25s ease, padding-left 0.25s ease;
}
.mobile-menu a:hover { color: var(--blue); padding-left: 10px; }
.mobile-menu .btn { margin-top: 18px; text-align: center; border-bottom: none; }
.mobile-menu.open { transform: translateY(0); opacity: 1; visibility: visible; }

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
  transition: transform 0.3s var(--ease), box-shadow 0.35s ease,
    background 0.35s ease, border-color 0.35s ease, color 0.3s ease;
}
.btn-sm { padding: 9px 22px; font-size: 13.5px; }
.btn-block { width: 100%; }

.btn-primary {
  background: linear-gradient(135deg, #a5d4ff, #5aa9f7);
  color: #07121f;
  box-shadow: 0 8px 28px -10px rgba(110, 180, 250, 0.45);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px -10px rgba(110, 180, 250, 0.55);
}

.btn-ghost {
  border-color: rgba(148, 178, 214, 0.32);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}
.btn-ghost:hover {
  border-color: rgba(142, 203, 255, 0.55);
  color: var(--blue);
  transform: translateY(-2px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.02em;
}
.text-link span { transition: transform 0.3s var(--ease); }
.text-link:hover span { transform: translateX(5px); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--nav-h) + 40px) 0 80px;
}

/* 显式尺寸：canvas 属于替换元素，若不给 width/height，
   设置缓冲区尺寸会反向撑大其布局尺寸，形成指数级放大的反馈循环（页面翻白）。 */
#particles { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }

/* 交互光标网格：鼠标经过点亮附近网格，点击产生扩散脉冲（仿 oddob 首页特效） */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
#cursorGrid { display: block; width: 100%; height: 100%; }

/* 巨型描边水印 */
.hero-watermark {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(140px, 24vw, 340px);
  letter-spacing: 0.08em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(142, 203, 255, 0.06);
  user-select: none;
  pointer-events: none;
  animation: watermark-drift 26s ease-in-out infinite alternate;
}
@keyframes watermark-drift {
  from { transform: translate(-52%, -50%); }
  to   { transform: translate(-48%, -48%); }
}

/* 微弱渐变光球 */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  opacity: 0.55;
}
.orb-a {
  width: 480px; height: 480px;
  top: -160px; right: -120px;
  background: radial-gradient(circle, rgba(74, 144, 226, 0.22), transparent 70%);
}
.orb-b {
  width: 380px; height: 380px;
  bottom: -140px; left: -100px;
  background: radial-gradient(circle, rgba(142, 203, 255, 0.12), transparent 70%);
}

.hero-inner { text-align: left; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(8px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--text-2);
}
.hero-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 10px rgba(142, 203, 255, 0.9);
  animation: pulse-dot 2.6s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero h1 {
  margin-top: 30px;
  font-size: clamp(38px, 6.4vw, 74px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: 0.015em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(105deg, #cfe7ff 10%, #8ecbff 45%, #4a90e2 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin-top: 26px;
  max-width: 560px;
  font-size: clamp(15px, 1.6vw, 17.5px);
  color: var(--text-2);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }

/* 数据统计 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 72px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
  max-width: 860px;
}
.hero-stats li { display: flex; flex-direction: column; gap: 2px; }
.hero-stats strong {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: 0.01em;
  background: linear-gradient(180deg, #fff, #b9d7f5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}
.hero-stats li > span:last-child { font-size: 13px; color: var(--text-3); letter-spacing: 0.05em; }

/* 滚动提示 */
.scroll-hint {
  position: absolute;
  bottom: 30px; left: 50%;
  transform: translateX(-50%);
  width: 24px; height: 40px;
  border: 1px solid rgba(148, 178, 214, 0.3);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 7px;
}
.scroll-hint span {
  width: 3px; height: 8px;
  border-radius: 3px;
  background: var(--blue);
  animation: scroll-drop 1.8s var(--ease) infinite;
}
@keyframes scroll-drop {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ============================================================
   区块通用
   ============================================================ */
.section { position: relative; padding: 130px 0; z-index: 1; }
.section-alt {
  background:
    radial-gradient(ellipse 60% 40% at 85% 0%, rgba(74, 144, 226, 0.06), transparent),
    var(--bg-soft);
  border-block: 1px solid rgba(148, 178, 214, 0.08);
}

.section-head { text-align: center; max-width: 720px; margin: 0 auto 70px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.3em;
  color: var(--blue);
  text-transform: uppercase;
  white-space: nowrap;
}
.eyebrow i {
  width: 44px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(142, 203, 255, 0.6));
}

.section-head h2 {
  margin-top: 20px;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: 0.01em;
}
.section-desc { margin-top: 18px; color: var(--text-2); font-size: 16px; }
.section-desc.left { text-align: left; margin-inline: 0; }

/* ---------- 玻璃卡片 ---------- */
.card {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.45s var(--ease), border-color 0.4s ease,
    box-shadow 0.5s ease;
}
.glass-card:hover {
  /* 悬停时整体提亮，形成明暗呼吸感 */
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.085), rgba(255, 255, 255, 0.03));
  transform: translateY(-5px);
  border-color: rgba(142, 203, 255, 0.35);
  box-shadow:
    0 24px 56px -22px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(142, 203, 255, 0.08),
    0 0 42px -8px rgba(90, 169, 247, 0.18); /* 辉光边框（柔和） */
}

/* 卡片内鼠标聚光 */
.spot { position: relative; overflow: hidden; }
.spot::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    260px circle at var(--mx, 50%) var(--my, 50%),
    rgba(150, 205, 255, 0.09),
    transparent 68%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.spot:hover::before { opacity: 1; }

/* ============================================================
   产品优势
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.product-card { padding: 38px 32px 32px; display: flex; flex-direction: column; }

.product-icon {
  width: 58px; height: 58px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid rgba(142, 203, 255, 0.22);
  background: rgba(142, 203, 255, 0.06);
  margin-bottom: 24px;
  transition: box-shadow 0.4s ease, transform 0.4s var(--ease);
}
.product-icon svg { width: 30px; height: 30px; }
.glass-card:hover .product-icon {
  box-shadow: 0 0 24px -4px rgba(90, 169, 247, 0.35);
  transform: scale(1.05);
}

.product-en {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.28em;
  color: var(--text-3);
  margin-bottom: 8px;
}

.product-card h3 { font-size: 20.5px; font-weight: 700; letter-spacing: 0.02em; }
.product-desc { margin-top: 12px; font-size: 14.5px; color: var(--text-2); }

.feature-list { margin-top: 20px; display: grid; grid-template-columns: 1fr 1fr; gap: 9px 14px; }
.feature-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  color: var(--text-2);
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 8px; height: 1px;
  background: var(--blue);
}

.product-card .text-link { margin-top: auto; padding-top: 26px; }

/* 优势条目 */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 64px;
  padding-top: 56px;
  border-top: 1px dashed rgba(148, 178, 214, 0.16);
}
.adv-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px 16px;
  border-radius: 12px;
  border: 1px solid transparent;
  transition: background 0.4s ease, border-color 0.4s ease,
    transform 0.45s var(--ease);
}
.adv-item:hover {
  background: rgba(255, 255, 255, 0.035);
  border-color: var(--line);
  transform: translateX(5px);
}
.adv-item svg { width: 30px; height: 30px; flex-shrink: 0; margin-top: 3px; transition: filter 0.35s ease; }
.adv-item:hover svg { filter: drop-shadow(0 0 7px rgba(142, 203, 255, 0.55)); }
.adv-item h4 { font-size: 16px; font-weight: 700; letter-spacing: 0.03em; transition: color 0.3s ease; }
.adv-item:hover h4 { color: var(--blue); }
.adv-item p { margin-top: 6px; font-size: 13.5px; color: var(--text-3); line-height: 1.7; }

/* ============================================================
   案例展示
   ============================================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.case-card { overflow: hidden; }

.case-cover {
  position: relative;
  aspect-ratio: 16 / 8.4;
  overflow: hidden;
  background: linear-gradient(150deg, rgba(74, 144, 226, 0.14), rgba(142, 203, 255, 0.05));
  border-bottom: 1px solid var(--line);
}
.case-cover svg {
  width: 100%; height: 100%;
  display: block;
  transform: scale(1.01);
  transition: transform 0.8s var(--ease);
}
.case-card:hover .case-cover svg { transform: scale(1.05); }

.case-body { padding: 26px 28px 28px; }

.case-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--blue);
  padding: 4px 12px;
  border: 1px solid rgba(142, 203, 255, 0.3);
  border-radius: 999px;
  background: rgba(142, 203, 255, 0.06);
}
.tag-line { font-size: 12.5px; color: var(--text-3); letter-spacing: 0.05em; }
/* 案例时间：靠右对齐，与资讯时间保持一致的等宽数字 */
.case-meta time {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--text-3);
  white-space: nowrap;
}

.case-body h3 { font-size: 18.5px; font-weight: 700; letter-spacing: 0.02em; }
.case-body > p:not(.case-metric) { margin-top: 10px; font-size: 14px; color: var(--text-2); }

.case-metric {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed rgba(148, 178, 214, 0.18);
  font-size: 13.5px;
  color: var(--text-3);
}
.case-metric strong {
  margin-left: 6px;
  font-size: 21px;
  font-family: var(--font-sans);
  font-weight: 800;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
  text-shadow: 0 0 14px rgba(90, 169, 247, 0);
  transition: color 0.4s ease, text-shadow 0.4s ease;
}
.case-card:hover .case-metric strong {
  color: #c4e1ff;
  text-shadow: 0 0 16px rgba(110, 180, 250, 0.55);
}

/* ---------- 首页案例：主推大卡（最新一条） ---------- */
.case-feature-wrap { margin-bottom: 26px; }

.case-feature {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  overflow: hidden;
}
.case-feature-cover {
  position: relative;
  display: block;
  min-height: 100%;
  overflow: hidden;
  border-right: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(74, 144, 226, 0.16), rgba(142, 203, 255, 0.05));
}
.case-feature-cover svg {
  width: 100%; height: 100%;
  display: block;
  transform: scale(1.02);
  transition: transform 0.9s var(--ease);
}
.case-feature:hover .case-feature-cover svg { transform: scale(1.06); }

.case-badge {
  position: absolute;
  z-index: 2;
  top: 20px; left: 20px;
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: #d9ecff;
  background: rgba(10, 13, 19, 0.62);
  border: 1px solid rgba(142, 203, 255, 0.42);
  border-radius: 999px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.case-feature-body {
  display: flex;
  flex-direction: column;
  padding: 38px 40px 34px;
}
.case-feature-body h3 {
  margin-top: 4px;
  font-size: clamp(21px, 2.3vw, 27px);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.01em;
}
.case-feature-body h3 a { transition: color 0.3s ease; }
.case-feature:hover h3 a { color: var(--blue); }
.case-feature-body > p {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-2);
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 26px 0 28px;
  padding: 22px 0;
  border-block: 1px dashed rgba(148, 178, 214, 0.18);
}
.case-metrics li { min-width: 0; }
.case-metrics strong {
  display: block;
  font-size: clamp(18px, 1.9vw, 23px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}
.case-metrics span {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-3);
}
.case-feature-body .text-link { margin-top: auto; }

/* 列表小标题：区分「主推大卡」与「更多最新案例」 */
.case-list-label {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--text-3);
  text-transform: uppercase;
}
.case-list-label i {
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, rgba(148, 178, 214, 0.28), transparent);
}

/* ---------- 首页案例：紧凑时序列表 ---------- */
.case-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 40px;
  border-top: 1px solid var(--line);
}
/* li 撑满所在网格行高，左右两列的底部分隔线始终对齐 */
.case-list > li { display: flex; min-width: 0; }

.case-row {
  flex: 1 1 auto;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px 4px 24px 0;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.35s ease;
}
.case-row:hover { border-bottom-color: rgba(142, 203, 255, 0.35); }

.case-row-idx {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-3);
  transition: color 0.35s ease;
}
.case-row:hover .case-row-idx { color: var(--blue); }

.case-row-main { flex: 1 1 auto; min-width: 0; }
.case-row-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--text-3);
}
.case-row-meta .sep { font-style: normal; opacity: 0.5; }
.case-row-main h3 {
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.55;
  transition: color 0.3s ease;
}
.case-row:hover .case-row-main h3 { color: var(--blue); }
.case-row-main p {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-row-side {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  padding-top: 2px;
  text-align: right;
}
.case-row-metric {
  font-style: normal;
  font-size: 17px;
  font-weight: 800;
  color: var(--blue);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.case-row-metric-label {
  font-size: 11.5px;
  color: var(--text-3);
  white-space: nowrap;
}
.case-row-arrow {
  margin-top: 6px;
  font-style: normal;
  font-size: 15px;
  color: var(--text-3);
  transition: transform 0.35s var(--ease), color 0.35s ease;
}
.case-row:hover .case-row-arrow { transform: translateX(5px); color: var(--blue); }

/* ============================================================
   团队
   ============================================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.team-card { padding: 34px 24px 28px; text-align: center; }

.avatar {
  position: relative;
  width: 104px; height: 104px;
  margin: 0 auto 22px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid rgba(142, 203, 255, 0.28);
  background: radial-gradient(circle at 35% 30%, rgba(142, 203, 255, 0.18), rgba(255, 255, 255, 0.03));
  display: grid;
  place-items: center;
  transition: box-shadow 0.4s ease;
}
.glass-card:hover .avatar { box-shadow: 0 0 26px -4px rgba(90, 169, 247, 0.4); }

/* 姓氏字标头像 */
.avatar::before {
  content: attr(data-initial);
  font-size: 34px;
  font-weight: 700;
  color: rgba(142, 203, 255, 0.55);
  letter-spacing: 0.05em;
}

.team-card h3 { font-size: 18px; font-weight: 700; letter-spacing: 0.06em; }
.team-card .role {
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--blue);
  letter-spacing: 0.1em;
}
.team-card .bio {
  margin-top: 14px;
  font-size: 13.5px;
  color: var(--text-2);
  line-height: 1.75;
}

/* ============================================================
   联系我们
   ============================================================ */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 70px;
  align-items: start;
}

.contact-info h2 {
  margin-top: 20px;
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 800;
  line-height: 1.3;
}

.contact-list { margin-top: 42px; display: flex; flex-direction: column; gap: 26px; }
.contact-list li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  padding: 10px 14px;
  margin: -10px -14px;
  border-radius: 12px;
  transition: background 0.4s ease, transform 0.4s var(--ease);
}
.contact-list li:hover {
  background: rgba(142, 203, 255, 0.05);
  transform: translateX(6px);
}
.contact-list li:hover h5 { color: var(--blue); }
.contact-list svg { width: 24px; height: 24px; flex-shrink: 0; margin-top: 4px; transition: filter 0.35s ease; }
.contact-list li:hover svg { filter: drop-shadow(0 0 7px rgba(142, 203, 255, 0.5)); }
.contact-list h5 { font-size: 14.5px; font-weight: 700; letter-spacing: 0.04em; transition: color 0.3s ease; }
.contact-list p { margin-top: 3px; font-size: 14px; color: var(--text-2); }

.contact-form { padding: 36px 34px 30px; }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

.field { display: block; margin-bottom: 18px; }
.field > span {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--text-2);
  letter-spacing: 0.05em;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid rgba(148, 178, 214, 0.18);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-family: inherit;
  font-size: 14.5px;
  outline: none;
  resize: vertical;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--text-2) 50%), linear-gradient(135deg, var(--text-2) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%; background-size: 6px 6px; background-repeat: no-repeat; }
.field select option { background: #12161f; color: var(--text); }
.field input::placeholder,
.field textarea::placeholder { color: var(--text-3); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: rgba(142, 203, 255, 0.55);
  box-shadow: 0 0 0 3px rgba(142, 203, 255, 0.1);
  background: rgba(255, 255, 255, 0.045);
}
.field input.invalid,
.field textarea.invalid { border-color: rgba(255, 120, 120, 0.55); }

.form-tip { margin-top: 14px; text-align: center; font-size: 12px; color: var(--text-3); }

.form-success {
  position: absolute;
  inset: 0;
  z-index: 2;
  border-radius: inherit;
  background: rgba(12, 16, 23, 0.92);
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  padding: 30px;
  /* 关键：初始状态必须不响应鼠标事件，否则会拦截整个表单 */
  visibility: hidden;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.97);
  transition: opacity 0.5s ease, transform 0.5s var(--ease),
    visibility 0s linear 0.5s;
}
.form-success.show {
  visibility: visible;
  pointer-events: auto;
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.5s ease, transform 0.5s var(--ease);
}
.form-success svg { width: 54px; height: 54px; margin-bottom: 6px; }
.form-success h4 { font-size: 20px; }
.form-success p { font-size: 14px; color: var(--text-2); }

/* 提交失败提示 */
.form-error {
  margin-top: 14px;
  padding: 10px 14px;
  border: 1px solid rgba(255, 120, 120, 0.35);
  border-radius: 10px;
  background: rgba(255, 90, 90, 0.08);
  color: #ff9a9a;
  font-size: 13px;
  text-align: center;
}

/* 蜜罐字段：视觉隐藏，仅机器人会填写 */
.form-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

/* 自定义图片 logo */
.brand-logo { object-fit: contain; border-radius: 8px; }

/* 按钮禁用态 */
.btn:disabled,
.btn[disabled] { opacity: 0.6; cursor: not-allowed; }

/* ============================================================
   页脚
   ============================================================ */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.012), transparent);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 40px;
  padding: 64px 0 48px;
}

.footer-brand p { margin-top: 20px; font-size: 13.5px; color: var(--text-3); line-height: 1.9; }

.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h5 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text);
  margin-bottom: 8px;
}
.footer-col a {
  font-size: 13.5px;
  color: var(--text-3);
  transition: color 0.25s ease, transform 0.25s ease;
  width: fit-content;
}
.footer-col a:hover { color: var(--blue); transform: translateX(3px); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid rgba(148, 178, 214, 0.09);
  font-size: 12.5px;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

/* ============================================================
   滚动渐入动画
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.85s var(--ease) var(--d, 0s),
    transform 0.85s var(--ease) var(--d, 0s);
  will-change: opacity, transform;
}
[data-reveal].revealed { opacity: 1; transform: translateY(0); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
  .product-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .contact-wrap { grid-template-columns: 1fr; gap: 54px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
  /* 首页案例：大卡改为上下结构 */
  .case-feature { grid-template-columns: 1fr; }
  .case-feature-cover {
    min-height: 0;
    aspect-ratio: 16 / 7.2;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }
  .case-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 20px; }
}

@media (max-width: 860px) {
  :root { --nav-h: 66px; }

  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .mobile-menu { display: flex; }

  .section { padding: 88px 0; }
  .section-head { margin-bottom: 50px; }

  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 26px 20px; margin-top: 54px; }

  .case-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 48px; }

  /* 首页案例：单列堆叠 */
  .case-feature-body { padding: 30px 26px 28px; }
  .case-list { grid-template-columns: 1fr; gap: 0; }
  .case-row { gap: 16px; }

  .field-row { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 28px 22px 24px; }

  .footer-top { grid-template-columns: 1fr 1fr; padding: 52px 0 40px; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  body::before { background-size: 40px 40px; }

  .hero { padding-top: calc(var(--nav-h) + 20px); }
  .hero-watermark { font-size: 200px; opacity: 0.8; }
  .hero-actions .btn { flex: 1; }

  .product-grid { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr 1fr; }

  .adv-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; max-width: 320px; margin-inline: auto; }

  /* 首页案例：大卡指标单列、列表行上下排布 */
  .case-feature-body { padding: 26px 22px 24px; }
  .case-metrics { grid-template-columns: 1fr 1fr; gap: 14px; }
  .case-row { flex-wrap: wrap; gap: 12px 14px; }
  .case-row-side {
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    width: 100%;
    padding-top: 0;
    text-align: left;
  }
  .case-row-arrow { margin-top: 0; }

  .scroll-hint { display: none; }
  .cursor-glow { display: none; }
}

/* 触屏设备关闭鼠标跟随 */
@media (pointer: coarse) {
  .cursor-glow, #trail, .hero-grid { display: none; }
}

/* ============================================================
   内页通用
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.narrow { max-width: 800px; margin-inline: auto; }

/* ---------- 内页页头 ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--nav-h) + 84px) 0 64px;
  overflow: hidden;
  border-bottom: 1px solid rgba(148, 178, 214, 0.08);
  background: radial-gradient(ellipse 70% 90% at 18% 0%, rgba(74, 144, 226, 0.1), transparent 62%);
}
.page-hero h1 {
  margin-top: 22px;
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: 0.01em;
  max-width: 940px;
}
.page-hero-desc {
  margin-top: 18px;
  max-width: 740px;
  color: var(--text-2);
  font-size: clamp(15px, 1.5vw, 16.5px);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  font-size: 12.5px;
  letter-spacing: 0.03em;
  color: var(--text-3);
}
.breadcrumb a { color: var(--text-2); transition: color 0.25s ease; }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb i { font-style: normal; color: rgba(148, 178, 214, 0.4); }
.breadcrumb [aria-current] { color: var(--text-2); }

/* ---------- 紧凑区块标题（左对齐） ---------- */
.section-head.compact { text-align: left; max-width: none; margin: 0 0 34px; }
.section-head.compact h2 { margin-top: 0; font-size: clamp(22px, 2.6vw, 28px); }

.more-link { text-align: center; margin-top: 46px; }

/* ---------- 网格 ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-grid { grid-template-columns: repeat(3, 1fr); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: start; }

/* ============================================================
   产品详情
   ============================================================ */
.pain-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 34px;
  max-width: 960px;
  margin-inline: auto;
}
.pain-list li {
  position: relative;
  padding-left: 30px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.8;
}
.pain-list li::before {
  content: "!";
  position: absolute;
  left: 0; top: 4px;
  width: 18px; height: 18px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue);
  border: 1px solid rgba(142, 203, 255, 0.32);
  border-radius: 6px;
  background: rgba(142, 203, 255, 0.06);
}

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-grid > .card { padding: 30px 28px; }
.feature-grid h3 { font-size: 18px; font-weight: 700; letter-spacing: 0.02em; }
.feature-grid p { margin-top: 12px; font-size: 14px; color: var(--text-2); line-height: 1.8; }

.feature-list.lg { grid-template-columns: 1fr; gap: 12px 0; }
.feature-list.lg li { font-size: 14.5px; padding-left: 24px; }
.feature-list.lg li::before { width: 12px; top: 12px; }

.chip-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.chip {
  font-size: 13.5px;
  color: var(--text-2);
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color 0.3s ease, color 0.3s ease, transform 0.3s var(--ease);
}
.chip:hover { border-color: rgba(142, 203, 255, 0.4); color: var(--blue); transform: translateY(-2px); }

/* ---------- 表格 ---------- */
.table-wrap { border-radius: var(--radius); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-wrap table { width: 100%; border-collapse: collapse; min-width: 640px; }
.compare-table th,
.compare-table td,
.spec-table th,
.spec-table td {
  padding: 16px 20px;
  text-align: left;
  font-size: 14px;
  vertical-align: top;
  border-bottom: 1px solid rgba(148, 178, 214, 0.1);
}
.compare-table thead th {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--blue);
  background: rgba(142, 203, 255, 0.05);
  white-space: nowrap;
}
.compare-table tbody th { width: 22%; color: var(--text); font-weight: 600; }
.compare-table td { color: var(--text-2); }
.spec-table th { width: 34%; color: var(--text); font-weight: 600; white-space: nowrap; }
.spec-table td { color: var(--text-2); }
.compare-table tbody tr:last-child th,
.compare-table tbody tr:last-child td,
.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td { border-bottom: none; }

/* ============================================================
   案例详情
   ============================================================ */
.case-hero-cover {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(74, 144, 226, 0.14), rgba(142, 203, 255, 0.05));
  aspect-ratio: 16 / 7;
}
.case-hero-cover svg { width: 100%; height: 100%; display: block; }

.prose-block h2 { font-size: clamp(20px, 2.4vw, 26px); font-weight: 700; margin-bottom: 16px; }
.prose-block p { color: var(--text-2); font-size: 15px; line-height: 1.9; }

.metric-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.metric-card { padding: 30px 24px; text-align: center; }
.metric-card strong {
  display: block;
  font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, #fff, #b9d7f5);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.metric-card span { display: block; margin-top: 8px; font-size: 13px; color: var(--text-3); letter-spacing: 0.04em; }

.quote {
  margin: 0;
  padding: 34px 38px;
  border-left: 3px solid rgba(142, 203, 255, 0.5);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.quote p { font-size: clamp(16px, 1.8vw, 19px); line-height: 1.85; color: var(--text); }
.quote footer { margin-top: 18px; font-size: 14px; color: var(--text-3); }

/* ============================================================
   资讯卡片
   ============================================================ */
.news-card { display: flex; flex-direction: column; overflow: hidden; }
.news-cover {
  display: block;
  aspect-ratio: 16 / 8.6;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(74, 144, 226, 0.14), rgba(142, 203, 255, 0.05));
}
.news-cover svg { width: 100%; height: 100%; display: block; transform: scale(1.01); transition: transform 0.8s var(--ease); }
.news-card:hover .news-cover svg { transform: scale(1.05); }
.news-body { padding: 24px 26px 26px; display: flex; flex-direction: column; flex: 1; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 12.5px;
  color: var(--text-3);
}
.news-meta time { font-family: var(--font-mono); letter-spacing: 0.04em; }
.news-card h3 { font-size: 17.5px; font-weight: 700; line-height: 1.5; }
.news-card h3 a { transition: color 0.3s ease; }
.news-card:hover h3 a { color: var(--blue); }
.news-body > p { margin-top: 12px; font-size: 14px; color: var(--text-2); }
.news-body .text-link { margin-top: auto; padding-top: 20px; }

/* 案例 / 产品卡片标题悬停 */
.case-cover { display: block; }
.case-body h3 a,
.product-card h3 a { transition: color 0.3s ease; }
.case-card:hover .case-body h3 a,
.product-card:hover h3 a { color: var(--blue); }

/* ============================================================
   列表分页
   ============================================================ */
.pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 54px;
}
.pager-btn,
.pager-num {
  min-width: 44px;
  height: 44px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--glass);
  transition: color 0.3s ease, border-color 0.3s ease, background 0.3s ease, transform 0.3s var(--ease);
}
.pager-num { padding: 0; }
a.pager-btn:hover,
a.pager-num:hover {
  color: var(--blue);
  border-color: rgba(142, 203, 255, 0.42);
  transform: translateY(-2px);
}
.pager-num.is-current {
  color: #071018;
  font-weight: 700;
  border-color: transparent;
  background: linear-gradient(140deg, #8ecbff, #4a90e2);
  cursor: default;
}
.pager-btn.is-disabled {
  color: var(--text-3);
  opacity: 0.42;
  cursor: not-allowed;
}
.pager-ellipsis {
  min-width: 20px;
  text-align: center;
  font-family: var(--font-mono);
  color: var(--text-3);
}
.pager-summary {
  flex-basis: 100%;
  display: block;
  margin-top: 6px;
  text-align: center;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--text-3);
}

/* ============================================================
   文章正文排版
   ============================================================ */
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
  font-size: 13px;
  color: var(--text-3);
}
.article-meta time { font-family: var(--font-mono); letter-spacing: 0.04em; }
.dot-sep { color: rgba(148, 178, 214, 0.4); }

.prose-lead p { font-size: 16.5px; color: var(--text-2); line-height: 1.95; }
.prose-lead p + p { margin-top: 18px; }

.prose { color: var(--text-2); font-size: 16px; line-height: 1.95; }
.prose > * + * { margin-top: 20px; }
.prose h1 { font-size: clamp(24px, 3vw, 32px); color: var(--text); font-weight: 800; line-height: 1.35; }
.prose h2 {
  margin-top: 46px;
  padding-left: 16px;
  font-size: clamp(20px, 2.4vw, 26px);
  color: var(--text);
  font-weight: 700;
  line-height: 1.42;
  border-left: 3px solid rgba(142, 203, 255, 0.5);
}
.prose h3 { margin-top: 32px; font-size: 18px; font-weight: 700; color: var(--text); }
.prose h4 { margin-top: 26px; font-size: 16px; font-weight: 700; color: var(--text); }
.prose p { color: var(--text-2); }
.prose strong { color: var(--text); font-weight: 700; }
.prose em { font-style: normal; color: var(--blue); }
.prose ul,
.prose ol { display: flex; flex-direction: column; gap: 10px; padding-left: 4px; }
.prose ul li { position: relative; padding-left: 24px; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 2px; top: 13px;
  width: 8px; height: 1px;
  background: var(--blue);
}
.prose ol { counter-reset: li; }
.prose ol li { position: relative; padding-left: 32px; counter-increment: li; }
.prose ol li::before {
  content: counter(li);
  position: absolute;
  left: 0; top: 4px;
  width: 20px; height: 20px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--blue);
  border: 1px solid rgba(142, 203, 255, 0.3);
  border-radius: 6px;
}
.prose blockquote {
  padding: 18px 24px;
  border-left: 3px solid rgba(142, 203, 255, 0.45);
  border-radius: 0 10px 10px 0;
  background: rgba(255, 255, 255, 0.025);
  color: var(--text);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(142, 203, 255, 0.1);
  color: #cfe7ff;
}
.prose pre {
  padding: 20px 22px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(6, 9, 14, 0.7);
  overflow-x: auto;
}
.prose pre code { padding: 0; background: none; color: var(--text-2); }
.prose a { color: var(--blue); border-bottom: 1px solid rgba(142, 203, 255, 0.3); }
.prose a:hover { border-bottom-color: var(--blue); }
.prose img { border-radius: 12px; }

/* ============================================================
   FAQ 折叠
   ============================================================ */
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-item[open] { border-color: rgba(142, 203, 255, 0.32); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  transition: color 0.25s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--blue); }
.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: var(--blue);
  transition: transform 0.3s var(--ease);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-a { padding: 0 24px 22px; color: var(--text-2); font-size: 14.5px; line-height: 1.9; }

/* ============================================================
   CTA 带
   ============================================================ */
.cta-band { padding: 40px 0 120px; }
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
  padding: 46px 48px;
}
.cta-inner h2 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; }
.cta-inner p { margin-top: 12px; max-width: 560px; color: var(--text-2); font-size: 15px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* ============================================================
   404
   ============================================================ */
.error-hero { padding: calc(var(--nav-h) + 100px) 0 120px; }
.error-code {
  font-family: var(--font-mono);
  font-size: clamp(80px, 16vw, 180px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(142, 203, 255, 0.35);
}
.error-hero h1 { margin-top: 8px; font-size: clamp(28px, 4vw, 44px); }
.error-hero .hero-actions { margin-top: 36px; }

/* ============================================================
   内页响应式
   ============================================================ */
@media (max-width: 1024px) {
  .card-grid,
  .news-grid,
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .metric-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; gap: 44px; }
}

@media (max-width: 860px) {
  .page-hero { padding: calc(var(--nav-h) + 56px) 0 48px; }
  .card-grid,
  .news-grid,
  .feature-grid { grid-template-columns: 1fr; }
  .pain-list { grid-template-columns: 1fr; }
  .cta-inner { padding: 36px 28px; }
  .cta-inner .cta-actions { width: 100%; }
  .cta-inner .cta-actions .btn { flex: 1; }
}

@media (max-width: 560px) {
  .metric-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .cta-band { padding: 24px 0 88px; }
  .quote { padding: 26px 22px; }
  .page-hero h1 { font-size: clamp(26px, 7vw, 34px); }
}

/* 减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}