/* ============================================================
   AIC 首页 · V2 DEEP FOCUS —— hero / 4 卡之后的 5 段沉浸分镜
   全部样式作用域限定在 .home-v2，避免与 common.css / home.css
   既有类（尤其 .timeline）冲突，也绝不波及 hero / advantages / nav。
   设计 token 沿用 common.css :root。
   ============================================================ */

.home-v2 { position: relative; z-index: 1; }

/* ---------- 暗场用的 ghost 按钮（common.css 的 .btn-ghost 是浅底款） ---------- */
.home-v2 .btn-ghost.on-dark {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}
.home-v2 .btn-ghost.on-dark:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

/* ============================================================
   SCENE 基础：每段近全屏，明暗强对比交替
   ============================================================ */
.home-v2 .scene { position: relative; z-index: 1; }
.home-v2 .scene-dark { background: var(--ink); color: #fff; }
.home-v2 .scene-darker { background: #050b16; color: #fff; }
.home-v2 .scene-light { background: var(--bg); color: var(--ink); }
.home-v2 .scene-white { background: var(--white); color: var(--ink); }
.home-v2 .scene-pad { padding: clamp(90px, 12vh, 160px) 0; }

.home-v2 .scene-eyebrow {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 13px; letter-spacing: 0.18em; color: var(--accent-bright);
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 18px; font-weight: 500;
}
.home-v2 .scene-light .scene-eyebrow,
.home-v2 .scene-white .scene-eyebrow { color: var(--accent); }
.home-v2 .scene-title {
  font-family: "Barlow Condensed", "Noto Sans SC", system-ui, sans-serif;
  font-weight: 800; letter-spacing: -0.01em;
  font-size: clamp(32px, 5vw, 64px); line-height: 1.06; margin-bottom: 22px;
}
.home-v2 .scene-lead {
  font-size: clamp(16px, 1.4vw, 19px); max-width: 640px; color: var(--mute); line-height: 1.7;
}
.home-v2 .scene-dark .scene-lead,
.home-v2 .scene-darker .scene-lead { color: #9DB0D0; }

/* ============================================================
   入场揭示动画（仅在 html.js-anim 时预隐藏；无 JS / 减弱动效则原样可见）
   ============================================================ */
/* 注：显示（.in）规则必须与隐藏规则同样带 html.js-anim 前缀，否则特异度低于
   `html.js-anim .home-v2 .reveal`（多一个 html 元素选择符），加 .in 也压不过 opacity:0。 */
html.js-anim .home-v2 .reveal { opacity: 0; transform: translateY(34px); }
.home-v2 .reveal {
  transition: opacity 0.9s cubic-bezier(0.2, 0.7, 0.2, 1),
              transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1);
  transition-delay: var(--reveal-d, 0s);
}
html.js-anim .home-v2 .reveal.in { opacity: 1; transform: none; }

html.js-anim .home-v2 .reveal-clip { clip-path: inset(0 100% 0 0); }
.home-v2 .reveal-clip { transition: clip-path 1.1s cubic-bezier(0.7, 0, 0.2, 1); }
html.js-anim .home-v2 .reveal-clip.in { clip-path: inset(0 0 0 0); }

.home-v2 .line-reveal { display: block; overflow: hidden; }
.home-v2 .line-reveal > span { display: block; }
html.js-anim .home-v2 .line-reveal > span { transform: translateY(110%); }
.home-v2 .line-reveal > span { transition: transform 1s cubic-bezier(0.2, 0.8, 0.2, 1); }
html.js-anim .home-v2 .line-reveal.in > span { transform: none; }

/* ============================================================
   PRODUCTS / CASES —— sticky 左文右图 + 帧堆叠切换
   默认（无 JS / 移动端 / 减弱动效）：可读的纵向堆叠；
   JS 在桌面给 section 加 .fx-on 后才启用 sticky + 帧切换。
   ============================================================ */
.home-v2 .sticky-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 60px; align-items: start; }
.home-v2 .sticky-col { padding: 80px 0; }

/* 默认堆叠态 */
.home-v2 .product-frame { display: grid; gap: 18px; }
.home-v2 .frame-card {
  position: relative; width: min(100%, 520px); margin: 0 auto;
  border-radius: var(--r-xl); overflow: hidden;
  background: linear-gradient(150deg, #16273f, #0c1a30);
  border: 1px solid rgba(74, 144, 255, 0.2);
  box-shadow: 0 40px 90px -30px rgba(10, 22, 40, 0.45);
}

/* 增强态（桌面 + JS）：右侧 stage 由 JS 撑成 n×90vh 高 → 行变高，
   左列与右侧 product-frame 在这个高行内 sticky 顶部 pin，提供滚动距离。 */
.home-v2 .scene.fx-on .sticky-col {
  position: sticky; top: 0; height: 100vh; align-self: start;
  display: flex; flex-direction: column; justify-content: center;
}
.home-v2 .scene.fx-on .products-stage { position: relative; align-self: stretch; }
.home-v2 .scene.fx-on .product-frame {
  position: sticky; top: 0; height: 100vh; display: flex; align-items: center; justify-content: center;
}
.home-v2 .scene.fx-on .frame-card {
  position: absolute; opacity: 0; transform: translateY(40px) scale(0.96);
  transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1);
}
.home-v2 .scene.fx-on .frame-card.active { opacity: 1; transform: none; }

.home-v2 .frame-visual {
  aspect-ratio: 4 / 3; position: relative; display: grid; place-items: center;
  background: radial-gradient(ellipse at 60% 40%, rgba(74, 144, 255, 0.22), transparent 65%);
}
.home-v2 .frame-visual svg { width: 62%; filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.5)); }
.home-v2 .frame-grid-tex {
  position: absolute; inset: 0; opacity: 0.07;
  background-image: linear-gradient(rgba(255, 255, 255, 0.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.6) 1px, transparent 1px);
  background-size: 40px 40px;
}
.home-v2 .frame-info { padding: 24px 26px 26px; color: #fff; background: rgba(6, 12, 24, 0.4); }
.home-v2 .frame-info .fi-top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 6px; }
.home-v2 .frame-info .fi-model { font-family: "Barlow Condensed", "Noto Sans SC", sans-serif; font-weight: 700; font-size: 26px; }
.home-v2 .frame-info .fi-tag {
  font-size: 11px; letter-spacing: 0.1em; color: var(--accent-bright);
  font-family: "JetBrains Mono", monospace; border: 1px solid rgba(74, 144, 255, 0.4);
  border-radius: 99px; padding: 3px 10px; white-space: nowrap;
}
.home-v2 .frame-info .fi-sub { color: #9DB0D0; font-size: 13.5px; margin-bottom: 16px; }
.home-v2 .frame-specs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.home-v2 .frame-specs .sp { background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.08); border-radius: var(--r-sm); padding: 10px 8px; text-align: center; }
.home-v2 .frame-specs .sp b { display: block; font-family: "Barlow Condensed", sans-serif; font-weight: 700; font-size: 20px; color: #fff; }
.home-v2 .frame-specs .sp span { font-size: 10.5px; color: #8FA2C2; }

/* 左侧产品/案例文案条目（滚动联动高亮） */
.home-v2 .prod-list,
.home-v2 .case-list { list-style: none; margin: 30px 0 34px; border-left: 1px solid rgba(255, 255, 255, 0.12); }
.home-v2 .prod-list li,
.home-v2 .case-list li {
  padding: 18px 0 18px 24px; position: relative; opacity: 0.4;
  transition: opacity 0.4s, transform 0.4s; cursor: default;
}
.home-v2 .prod-list li::before,
.home-v2 .case-list li::before {
  content: ""; position: absolute; left: -1px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 0; background: var(--accent-bright); transition: height 0.4s; border-radius: 2px;
}
.home-v2 .prod-list li.on,
.home-v2 .case-list li.on { opacity: 1; transform: translateX(4px); }
.home-v2 .prod-list li.on::before,
.home-v2 .case-list li.on::before { height: 64%; }
.home-v2 .pl-head,
.home-v2 .cl-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.home-v2 .pl-model { font-family: "Barlow Condensed", sans-serif; font-weight: 700; font-size: 22px; color: #fff; }
.home-v2 .pl-pw { font-family: "JetBrains Mono", monospace; font-size: 13px; color: var(--accent-bright); }
.home-v2 .pl-desc { font-size: 13.5px; color: #9DB0D0; margin-top: 4px; }

/* CASES 浅底反相 */
.home-v2 .case-frame .frame-card { background: linear-gradient(150deg, #fff, #eef3fb); border: 1px solid var(--line); }
.home-v2 .case-frame .frame-visual { background: radial-gradient(ellipse at 60% 40%, rgba(0, 82, 217, 0.1), transparent 65%); }
.home-v2 .case-frame .frame-visual svg { filter: drop-shadow(0 16px 30px rgba(10, 22, 40, 0.18)); }
.home-v2 .case-frame .frame-info { color: var(--ink); background: transparent; border-top: 1px solid var(--line); }
.home-v2 .case-frame .fi-model { color: var(--ink); }
.home-v2 .case-frame .fi-tag { color: var(--accent); border-color: rgba(0, 82, 217, 0.3); }
.home-v2 .case-frame .frame-info p { font-size: 14px; color: var(--steel); line-height: 1.65; margin-top: 4px; }
.home-v2 .case-list { border-left-color: var(--line); }
.home-v2 .case-list li { opacity: 0.45; }
.home-v2 .case-list li::before { background: var(--accent); }
.home-v2 .cl-title { font-family: "Barlow Condensed", sans-serif; font-weight: 700; font-size: 21px; }
.home-v2 .cl-client { font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--accent); }
.home-v2 .cl-desc { font-size: 13.5px; color: var(--steel); margin-top: 3px; }

/* ============================================================
   帧视觉 —— 用真实照片替换示意 SVG（产品旗舰实拍 / 案例实景图）
   照片铺满 4:3 视觉区，叠工业网格 + 底部渐隐保证 HUD 可读；
   进入 active 时做轻微 Ken Burns 收束，强化"切到这一帧"的临场感。
   ============================================================ */
.home-v2 .frame-visual-photo { overflow: hidden; background: #0a1424; }
.home-v2 .frame-photo {
  position: absolute; inset: 0; z-index: 0;
  width: 100%; height: 100%; object-fit: cover; object-position: center; display: block;
  transform: scale(1.07);
  transition: transform 1.5s cubic-bezier(0.2, 0.7, 0.2, 1), filter 0.8s ease;
}
.home-v2 .scene.fx-on .frame-card.active .frame-photo { transform: scale(1); }
/* 照片之上：顶/底渐隐暗角 + 工业网格，保证质感且不抢 HUD */
.home-v2 .frame-visual-photo::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 11, 22, 0.28) 0%, rgba(5, 11, 22, 0) 26%,
              rgba(5, 11, 22, 0) 64%, rgba(5, 11, 22, 0.5) 100%);
}
.home-v2 .frame-visual-photo .frame-grid-tex { z-index: 2; opacity: 0.1; }

/* 帧角标（毛玻璃胶囊） */
.home-v2 .frame-badge {
  position: absolute; left: 16px; top: 16px; z-index: 3;
  font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.08em;
  color: #fff; background: rgba(5, 11, 22, 0.5); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.28); border-radius: 99px; padding: 5px 12px;
  display: inline-flex; align-items: center; gap: 7px;
}
.home-v2 .frame-badge::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-bright); box-shadow: 0 0 0 3px rgba(74, 144, 255, 0.25);
}

/* 产品段：4 帧共用旗舰实拍，靠取景差异 + 不锈钢冷调制造变化 */
.home-v2 #products .frame-card[data-frame="0"] .frame-photo { object-position: 52% 44%; }
.home-v2 #products .frame-card[data-frame="1"] .frame-photo { object-position: 66% 40%; }
.home-v2 #products .frame-card[data-frame="2"] .frame-photo { object-position: 40% 50%; }
.home-v2 #products .frame-card[data-frame="3"] .frame-photo { object-position: 56% 38%; filter: saturate(0.72) brightness(1.06) contrast(1.02); }

/* ============================================================
   产品帧·扫描光标 —— 借鉴设计稿 PRECISION CLEANING 的扫描光带
   一条青色发光横线在当前产品帧画面上下匀速扫描，强化"工业精密检测"质感。
   仅作用于 #products，且只在增强态（桌面 sticky）的当前 active 帧上运行，
   保证同一时刻只有一条扫描；被 .frame-visual-photo 的 overflow:hidden 裁在画面内，
   不溢出到下方信息条。移动端 / 无 JS / 减弱动效下不出现（fx-on 不启用即自动隐藏）。
   ============================================================ */
.home-v2 #products .frame-scan {
  position: absolute; left: 0; right: 0; top: 6%; height: 2px; z-index: 2;
  pointer-events: none; opacity: 0;
  background: linear-gradient(90deg, transparent, #5fd6ff 20%, #c7f0ff 50%, #5fd6ff 80%, transparent);
  box-shadow: 0 0 18px 2px rgba(95, 214, 255, 0.5), 0 0 6px rgba(95, 214, 255, 0.9);
}
.home-v2 #products.fx-on .frame-card.active .frame-scan {
  opacity: 1;
  animation: prodScan 6.5s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}
@keyframes prodScan {
  0%, 100% { top: 6%; }
  50%      { top: 94%; }
}
@media (prefers-reduced-motion: reduce) {
  .home-v2 #products .frame-scan { animation: none !important; opacity: 0 !important; }
}

/* 缺实景图的案例：品牌化图标卡（深蓝工业块，与照片帧同一暗色语言）
   注：tile 同时带 .frame-visual，需压过 .case-frame .frame-visual 的浅色 radial */
.home-v2 .case-frame .frame-visual.frame-visual-tile,
.home-v2 .frame-visual-tile {
  background: linear-gradient(150deg, #143058 0%, #0a1830 100%);
  display: grid; place-items: center; overflow: hidden;
}
.home-v2 .frame-visual-tile .tile-grid {
  position: absolute; inset: 0; opacity: 0.1;
  background-image: linear-gradient(rgba(255, 255, 255, 0.6) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.6) 1px, transparent 1px);
  background-size: 34px 34px;
}
.home-v2 .frame-visual-tile svg {
  width: 33%; color: #9DC2FF; opacity: 0.95; z-index: 1;
  filter: drop-shadow(0 14px 26px rgba(0, 0, 0, 0.45));
}
.home-v2 .frame-visual-tile .tile-label {
  position: absolute; bottom: 16px; left: 0; right: 0; text-align: center; z-index: 2;
  font-family: "JetBrains Mono", monospace; font-size: 12px; letter-spacing: 0.14em;
  color: rgba(157, 194, 255, 0.85);
}
/* 案例段白卡：照片帧底部信息条压暗一点点，保持照片→文字过渡自然 */
.home-v2 .case-frame .frame-visual-photo,
.home-v2 .case-frame .frame-visual-tile { aspect-ratio: 4 / 3; }

/* ============================================================
   PROOF —— before/after 对比滑块（浅灰底 · CASES 的证据收口）
   两图叠放，上层(清洗前)用 clip-path:inset 按 --pos 裁切；透明 range 接收
   鼠标/触摸/键盘 拖拽。touch-action:pan-y 让纵向滑页不被吞（长滚动页关键，
   比只在圆柄拦截更稳：竖向照常滚、横向才拖滑块）。自动来回扫见 home-v2.js。
   ============================================================ */
.home-v2 .ba-figure { margin: clamp(40px, 6vh, 72px) 0 0; }
.home-v2 .ba-compare {
  --pos: 50%;                         /* 唯一状态：裁切 / 竖线位置 */
  position: relative; width: 100%; aspect-ratio: 16 / 9;
  border-radius: var(--r-xl); overflow: hidden; user-select: none;
  background: #0a1424; border: 1px solid var(--line);
  box-shadow: 0 36px 80px -28px rgba(10, 22, 40, 0.5);
  touch-action: pan-y;
}
.home-v2 .ba-img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; pointer-events: none; -webkit-user-drag: none; user-select: none;
}
/* 上层=清洗前，只显示 0 → --pos 的部分 */
.home-v2 .ba-before { clip-path: inset(0 calc(100% - var(--pos)) 0 0); }

/* 竖线 + 圆形拖柄，跟着 --pos 走 */
.home-v2 .ba-handle {
  position: absolute; top: 0; bottom: 0; left: var(--pos);
  transform: translateX(-50%); width: 2px; z-index: 3; pointer-events: none;
  background: rgba(255, 255, 255, 0.92); box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
}
.home-v2 .ba-knob {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 46px; height: 46px; border-radius: 50%; background: #fff;
  box-shadow: 0 6px 18px -2px rgba(5, 11, 22, 0.55); display: grid; place-items: center;
  color: var(--ink);
}
.home-v2 .ba-knob svg { width: 22px; height: 22px; }
/* 键盘聚焦时高亮圆柄（range 自带左右键操作，无障碍） */
.home-v2 .ba-compare:focus-within .ba-knob {
  box-shadow: 0 0 0 4px rgba(74, 144, 255, 0.55), 0 6px 18px -2px rgba(5, 11, 22, 0.55);
}

/* 透明 range：接收 鼠标/触摸/键盘 拖拽；pan-y 保证纵向滑页不被吞 */
.home-v2 .ba-slider {
  position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; z-index: 4;
  -webkit-appearance: none; appearance: none; background: transparent;
  cursor: ew-resize; opacity: 0; touch-action: pan-y;
}
.home-v2 .ba-slider::-webkit-slider-thumb { -webkit-appearance: none; width: 52px; height: 100%; }
.home-v2 .ba-slider::-moz-range-thumb { width: 52px; height: 100%; border: 0; background: transparent; }
.home-v2 .ba-slider:focus { outline: none; }

/* 角标（毛玻璃胶囊，与 .frame-badge 同语言） */
.home-v2 .ba-tag {
  position: absolute; top: 16px; z-index: 2; pointer-events: none;
  padding: 6px 14px; border-radius: 99px; font-size: 12px; font-weight: 700;
  letter-spacing: 0.06em; color: #fff; font-family: "JetBrains Mono", monospace;
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
}
.home-v2 .ba-tag-before { left: 16px; background: rgba(5, 11, 22, 0.62); border: 1px solid rgba(255, 255, 255, 0.22); }
.home-v2 .ba-tag-after { right: 16px; background: var(--accent); }

.home-v2 .ba-note {
  margin-top: 16px; text-align: center; font-size: 13px; color: var(--steel);
  font-family: "JetBrains Mono", monospace; letter-spacing: 0.02em;
}
@media (max-width: 560px) {
  .home-v2 .ba-compare { aspect-ratio: 3 / 2; }
  .home-v2 .ba-knob { width: 40px; height: 40px; }
  .home-v2 .ba-tag { font-size: 11px; padding: 5px 11px; }
}

/* ============================================================
   RESOURCES —— 深色 · 资料合集揭示
   ============================================================ */
.home-v2 .res-master { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; margin-top: 48px; }
.home-v2 .res-badge {
  display: inline-flex; align-items: center; gap: 8px; font-family: "JetBrains Mono", monospace;
  font-size: 12px; letter-spacing: 0.12em; color: var(--accent-bright);
  border: 1px solid rgba(74, 144, 255, 0.35); border-radius: 99px; padding: 6px 14px; margin-bottom: 20px;
}
.home-v2 .res-master h3 { font-family: "Barlow Condensed", "Noto Sans SC", sans-serif; font-weight: 700; font-size: clamp(28px, 3.4vw, 42px); line-height: 1.1; margin-bottom: 16px; }
.home-v2 .res-master > div > p { color: #9DB0D0; max-width: 520px; margin-bottom: 24px; }
.home-v2 .res-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.home-v2 .res-chips span { font-size: 13px; background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 99px; padding: 8px 16px; color: #C3D0E6; }
.home-v2 .res-chips b { color: #fff; font-family: "JetBrains Mono", monospace; }
.home-v2 .res-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.home-v2 .zip-pack {
  position: relative; aspect-ratio: 5 / 4; border-radius: var(--r-xl); overflow: hidden;
  background: linear-gradient(150deg, #16273f, #0a1424); border: 1px solid rgba(74, 144, 255, 0.22);
  display: grid; place-items: center; box-shadow: 0 40px 90px -30px rgba(10, 22, 40, 0.45);
}
.home-v2 .zip-pack .zg { position: absolute; inset: 0; opacity: 0.08; background-image: linear-gradient(rgba(255, 255, 255, 0.6) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.6) 1px, transparent 1px); background-size: 44px 44px; }
.home-v2 .zip-pack .zi { font-family: "Barlow Condensed", sans-serif; font-weight: 800; font-size: clamp(60px, 8vw, 110px); color: #fff; letter-spacing: 0.04em; line-height: 1; position: relative; text-shadow: 0 18px 40px rgba(0, 0, 0, 0.4); }
.home-v2 .zip-pack .zl { position: relative; margin-top: 14px; font-family: "JetBrains Mono", monospace; font-size: 13px; letter-spacing: 0.15em; color: var(--accent-bright); }
.home-v2 .zip-pack .zs { position: relative; margin-top: 6px; font-size: 28px; font-family: "Barlow Condensed", sans-serif; font-weight: 700; color: #fff; }

/* ============================================================
   SERVICE —— 7 步时间轴（浅底）。.timeline 仅在 .home-v2 下生效，压过 home.css 旧规则。
   ============================================================ */
.home-v2 .svc-promise { display: inline-flex; align-items: center; gap: 14px; margin: 8px 0 44px; background: var(--accent-light); border: 1px solid rgba(0, 82, 217, 0.18); border-radius: 99px; padding: 12px 24px; flex-wrap: wrap; }
.home-v2 .svc-promise b { font-family: "Barlow Condensed", sans-serif; font-weight: 700; font-size: 20px; color: var(--accent); }
.home-v2 .svc-promise span { color: var(--steel); font-size: 14px; }
.home-v2 .timeline { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0; margin: 20px 0 56px; position: relative; }
.home-v2 .timeline::before { content: ""; position: absolute; left: 0; right: 0; top: 46px; height: 2px; background: linear-gradient(90deg, var(--line), var(--accent) 50%, var(--line)); z-index: 0; }
.home-v2 .tl-node { position: relative; z-index: 1; text-align: center; padding: 0 8px; }
.home-v2 .tl-dot { width: 54px; height: 54px; border-radius: 50%; background: #fff; border: 2px solid var(--line); display: grid; place-items: center; margin: 20px auto 16px; font-family: "JetBrains Mono", monospace; font-weight: 700; color: var(--accent); font-size: 16px; transition: transform 0.4s, border-color 0.4s, box-shadow 0.4s, background 0.4s, color 0.4s; }
html.js-anim .home-v2 .tl-node { opacity: 0; transform: translateY(22px); transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); transition-delay: var(--reveal-d, 0s); }
html.js-anim .home-v2 .tl-node.in { opacity: 1; transform: none; }
.home-v2 .tl-node.in .tl-dot { border-color: var(--accent); box-shadow: 0 10px 24px -8px rgba(0, 82, 217, 0.5); transform: scale(1.06); }
.home-v2 .tl-node:hover .tl-dot { background: var(--accent); color: #fff; transform: scale(1.12); }
.home-v2 .tl-node h5 { font-family: "Barlow Condensed", "Noto Sans SC", sans-serif; font-weight: 700; font-size: 17px; margin-bottom: 6px; }
.home-v2 .tl-node p { font-size: 12px; color: var(--mute); line-height: 1.45; }

.home-v2 .warranty-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.home-v2 .war-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 26px 22px; transition: transform 0.35s, box-shadow 0.35s, border-color 0.35s; }
.home-v2 .war-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(0, 82, 217, 0.3); }
.home-v2 .war-card .wc-num { font-family: "Barlow Condensed", sans-serif; font-weight: 800; font-size: 34px; color: var(--accent); line-height: 1; }
.home-v2 .war-card .wc-num small { font-size: 15px; color: var(--steel); font-weight: 600; margin-left: 4px; }
.home-v2 .war-card .wc-lbl { font-weight: 700; margin: 8px 0 4px; font-size: 16px; }
.home-v2 .war-card p { font-size: 13px; color: var(--mute); }

/* ============================================================
   ABOUT —— 深色收尾 + 数据 + 资质 + 表单（表单复用既有白卡 .ac-form）
   ============================================================ */
.home-v2 .about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 48px 0; }
.home-v2 .ab-stat { border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--r-lg); padding: 32px 26px; background: rgba(255, 255, 255, 0.02); transition: transform 0.4s, border-color 0.4s, background 0.4s; }
.home-v2 .ab-stat:hover { transform: translateY(-6px); border-color: rgba(74, 144, 255, 0.4); background: rgba(74, 144, 255, 0.05); }
.home-v2 .ab-stat .n { font-family: "Barlow Condensed", sans-serif; font-weight: 800; font-size: clamp(46px, 5.5vw, 72px); color: #fff; line-height: 1; display: flex; align-items: baseline; gap: 6px; }
.home-v2 .ab-stat .n .u { font-size: 24px; color: var(--accent-bright); }
.home-v2 .ab-stat .l { color: #9DB0D0; margin-top: 8px; font-size: 15px; }

.home-v2 .badges { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.home-v2 .badge { display: inline-flex; align-items: center; gap: 10px; background: rgba(255, 255, 255, 0.04); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 99px; padding: 11px 20px; font-size: 14px; color: #C3D0E6; }
.home-v2 .badge svg { color: var(--accent-bright); flex: none; }

.home-v2 .about-cta { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; margin-top: 80px; border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 72px; }
.home-v2 .ac-intro h3 { font-family: "Barlow Condensed", "Noto Sans SC", sans-serif; font-weight: 700; font-size: clamp(28px, 3.4vw, 44px); line-height: 1.1; margin-bottom: 18px; color: #fff; }
.home-v2 .ac-intro > p { color: #9DB0D0; max-width: 440px; margin-bottom: 28px; }
.home-v2 .ac-points { list-style: none; display: grid; gap: 14px; }
.home-v2 .ac-points li { display: flex; align-items: center; gap: 12px; color: #C3D0E6; font-size: 15px; }
.home-v2 .ac-points li svg { color: var(--accent-bright); flex: none; }

/* about 表单沿用既有 .ac-form 白卡（backend 直连 /api/leads），此处仅微调间距 */
.home-v2 .about-cta .ac-form-col { display: flex; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .home-v2 .warranty-grid { grid-template-columns: repeat(2, 1fr); }
  .home-v2 .about-stats { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 860px) {
  /* 拆掉 sticky 双栏，顺序流 */
  .home-v2 .sticky-grid { grid-template-columns: 1fr; gap: 0; }
  .home-v2 .sticky-col { padding: 48px 0 12px; }
  .home-v2 .res-master,
  .home-v2 .about-cta { grid-template-columns: 1fr; gap: 32px; }
  .home-v2 .about-cta { padding-top: 48px; }
  .home-v2 .timeline { grid-template-columns: repeat(2, 1fr); gap: 24px 12px; }
  .home-v2 .timeline::before { display: none; }
}
@media (max-width: 560px) {
  .home-v2 .about-stats { grid-template-columns: 1fr; }
  .home-v2 .warranty-grid { grid-template-columns: 1fr; }
  .home-v2 .res-chips span { font-size: 12px; padding: 7px 13px; }
}

/* 减弱动效：强制可见 + 帧堆叠，去掉 sticky */
@media (prefers-reduced-motion: reduce) {
  .home-v2 .reveal,
  .home-v2 .reveal-clip,
  .home-v2 .line-reveal > span,
  .home-v2 .tl-node { opacity: 1 !important; transform: none !important; clip-path: none !important; }
  .home-v2 .scene.fx-on .sticky-col,
  .home-v2 .scene.fx-on .product-frame { position: relative; height: auto; display: block; }
  .home-v2 .scene.fx-on .frame-card { position: relative; opacity: 1; transform: none; margin-bottom: 18px; }
}