*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;font-size:16px;-webkit-text-size-adjust:100%;}
body{font-family:var(--font-cn);color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased;font-weight:300;overflow-x:hidden;}
::selection{background:var(--accent);color:#fff;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.num{font-variant-numeric:tabular-nums;font-family:var(--font-en);}
.container{max-width:var(--maxw);margin:0 auto;padding:0 56px;}
.kicker{font-family:var(--font-en);font-size:12px;letter-spacing:.34em;color:var(--accent);text-transform:uppercase;font-weight:500;}

/* 媒体组件 */
.media{position:relative;overflow:hidden;background:#111;isolation:isolate;}
.media img,.media video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  filter:contrast(1.04) brightness(.96);transition:transform 1.4s var(--ease),filter .8s var(--ease);}
.media:hover img,.media:hover video{transform:scale(1.05);filter:contrast(1.05) brightness(1);}
.scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(10,10,10,.15),rgba(10,10,10,.55) 60%,rgba(10,10,10,.78));}
.scrim-top{background:linear-gradient(180deg,rgba(10,10,10,.7),transparent 45%);}

/* 颗粒质感 */
.grain{position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}
/* 搜索面板 */
.search-panel{position:fixed;inset:0;z-index:300;display:none;align-items:flex-start;justify-content:center;padding:120px 24px 40px;background:rgba(8,8,9,.93);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);}
.search-panel.open{display:flex;}
.sp-inner{width:min(680px,100%);}
.sp-bar{display:flex;align-items:center;gap:14px;border-bottom:1px solid rgba(255,255,255,.22);padding:16px 4px;}
.sp-bar svg{width:22px;height:22px;color:rgba(255,255,255,.55);flex:none;}
.sp-bar input{flex:1;font:inherit;font-size:clamp(18px,2.4vw,24px);font-weight:300;color:#fff;background:none;border:0;outline:none;letter-spacing:.02em;min-width:0;}
.sp-bar input::placeholder{color:rgba(255,255,255,.32);}
.sp-close{width:38px;height:38px;border-radius:999px;border:1px solid rgba(255,255,255,.22);background:none;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;flex:none;transition:background .3s ease,border-color .3s ease;}
.sp-close:hover{background:#E5002B;border-color:#E5002B;}
.sp-close svg{width:16px;height:16px;}
.sp-hint{margin-top:20px;font-size:12.5px;font-weight:300;letter-spacing:.06em;color:rgba(255,255,255,.4);}

/* ========== 导航·沉浸 ========== */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .4s var(--ease),border-color .4s var(--ease);border-bottom:1px solid transparent;}
.nav.scrolled{background:var(--glass);backdrop-filter:blur(22px) saturate(140%);-webkit-backdrop-filter:blur(22px) saturate(140%);border-bottom-color:var(--line);}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:0 56px;height:64px;display:flex;align-items:center;justify-content:space-between;color:#fff;transition:color .4s var(--ease);}
.nav.scrolled .nav-inner{color:var(--ink);}
.brand{display:flex;align-items:center;text-decoration:none;}
.brand img{height:38px;width:auto;display:block;transition:opacity .35s var(--ease);}
.brand .logo-dark,.nav.scrolled .brand .logo-light{opacity:0;position:absolute;pointer-events:none;}
.brand .logo-light,.nav.scrolled .brand .logo-dark{opacity:1;position:relative;}
.brand{position:relative;}
.nav-links{display:flex;gap:42px;align-items:center;margin-left:auto;}
.nav-item{font-size:14px;font-weight:400;opacity:.82;position:relative;padding:6px 0;transition:opacity .3s var(--ease);}
.nav-item:hover,.nav-item.is-active{opacity:1;}
.nav-item.is-active::after{content:"";position:absolute;left:0;bottom:-1px;width:12px;height:1.5px;background:var(--accent);}
/* 设计与研发 TAB：纯下拉触发器（无页面），重置 button 默认样式 */
button.nav-item{font-family:inherit;background:none;border:0;color:inherit;cursor:pointer;-webkit-appearance:none;appearance:none;line-height:inherit;}
button.nav-item:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px;}
.nav-has{position:relative;display:flex;align-items:center;padding-bottom:16px;margin-bottom:-16px;}
.nav-has .nav-item{display:flex;align-items:center;gap:5px;}
.nav-caret{width:9px;height:9px;opacity:.7;transition:transform .3s var(--ease);}
.nav-has:hover .nav-caret{transform:rotate(180deg);}
.nav-dropdown{position:absolute;top:100%;left:0;min-width:228px;background:var(--card);color:var(--ink);border-radius:14px;padding:8px;opacity:0;visibility:hidden;transform:translateY(8px);box-shadow:0 30px 70px -24px rgba(0,0,0,.42),0 0 0 1px rgba(10,10,10,.05);transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);}
.nav-has:hover .nav-dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.nav-dropdown a{display:block;padding:13px 16px;border-radius:10px;font-size:13.5px;color:var(--gray-600);opacity:1;transition:background .2s var(--ease),color .2s var(--ease);}
.nav-dropdown a:hover{background:var(--gray-100);color:var(--ink);}
.nav-actions{display:flex;gap:12px;align-items:center;margin-left:28px;}
/* 联系我们·红色椭圆按钮 */
.btn-contact{display:inline-flex;align-items:center;text-decoration:none;padding:7px 18px;border-radius:999px;font-size:13px;font-weight:500;line-height:1;cursor:pointer;transition:all .3s var(--ease);border:1px solid rgba(229,0,43,.28);background:rgba(229,0,43,.1);color:var(--accent);}
.btn-contact:hover{background:var(--accent);color:#fff;transform:translateY(-1px);}
/* 主题 / 语言 / 搜索 切换按钮（极小，贴右） */
.icon-toggle{width:30px;height:30px;flex:0 0 30px;border-radius:8px;border:none;background:transparent;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s var(--ease);position:relative;}
.icon-toggle svg{width:15px;height:15px;}
.icon-toggle:hover{background:rgba(255,255,255,.12);}
.icon-toggle .ic-moon{display:none;}
.nav.scrolled .icon-toggle{color:var(--gray-600);}
.nav.scrolled .icon-toggle:hover{background:var(--gray-100);}
/* 语言切换改为图形 globe，原文字标签样式已移除 */
[data-theme="dark"] .ic-sun{display:none;}
[data-theme="dark"] .ic-moon{display:block;}
[data-theme="dark"] .icon-toggle{color:var(--on-inv);}
[data-theme="dark"] .icon-toggle:hover{background:rgba(255,255,255,.1);}
[data-theme="dark"] .nav.scrolled{background:var(--glass);border-bottom-color:var(--line);}
[data-theme="dark"] .nav.scrolled .brand .logo-light{opacity:1;position:relative;}
[data-theme="dark"] .nav.scrolled .brand .logo-dark{opacity:0;position:absolute;}
[data-theme="dark"] .nav.scrolled .nav-item{color:var(--on-inv);}

/* ========== Hero·整屏媒体轮播 ========== */
.hero{position:relative;min-height:100dvh;color:#fff;overflow:hidden;}
.hero-track{position:absolute;inset:0;z-index:0;}
.hero-slide{position:absolute;inset:0;display:flex;align-items:center;opacity:0;transition:opacity 1.2s var(--ease);will-change:opacity;}
.hero-slide.is-active{opacity:1;}
.hero-slide .media{position:absolute;inset:0;z-index:0;}
.hero-slide .media img,.hero-slide .media video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:contrast(1.05) brightness(.82);}
.hero-slide::after{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(120% 90% at 75% 10%,rgba(229,0,43,.28),transparent 50%),linear-gradient(180deg,rgba(10,10,10,.55),rgba(10,10,10,.25) 40%,rgba(10,10,10,.8));}
.hero-copy{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto;padding:0 56px;display:flex;flex-direction:column;align-items:flex-start;gap:28px;}
.hero .eyebrow{font-family:var(--font-en);font-size:12px;letter-spacing:.4em;color:var(--accent);text-transform:uppercase;font-weight:500;}
/* 主标题显示区域：max-width 12em = 一行最多 12 个全角字（1em ≈ 1 个汉字），超出自动换行 */
.hero h1{font-size:clamp(34px,5vw,64px);font-weight:500;line-height:1.1;letter-spacing:-.02em;max-width:12em;text-wrap:balance;}
.hero h1 .dot{color:var(--accent);}
.hero .lede{font-size:clamp(15px,1.6vw,19px);font-weight:300;opacity:.82;max-width:440px;line-height:1.85;}
.hero .eyebrow:empty,.hero h1:empty,.hero .lede:empty{display:none;}
/* 每屏文案入场动画：随 is-active 交错浮现 */
.hero-slide .hero-copy>*{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.hero-slide.is-active .hero-copy>.eyebrow{opacity:1;transform:none;transition-delay:.1s;}
.hero-slide.is-active .hero-copy>h1{opacity:1;transform:none;transition-delay:.24s;}
.hero-slide.is-active .hero-copy>.lede{opacity:1;transform:none;transition-delay:.42s;}
.hero-ctrl{position:absolute;z-index:3;left:0;right:0;bottom:40px;max-width:var(--maxw);margin:0 auto;padding:0 56px;display:flex;align-items:center;justify-content:space-between;pointer-events:none;}
.hero-dots{display:flex;gap:10px;pointer-events:auto;}
.hero-dot{width:36px;height:3px;border:none;background:rgba(255,255,255,.34);cursor:pointer;padding:0;transition:background .4s var(--ease);}
.hero-dot.is-active{background:#fff;}
.hero-arrows{display:flex;gap:10px;pointer-events:auto;}
.hero-arrows button{width:44px;height:44px;border-radius:999px;border:1px solid rgba(255,255,255,.42);background:transparent;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s var(--ease);}
.hero-arrows button:hover{background:rgba(255,255,255,.16);}
.hero-arrows svg{width:16px;height:16px;}

/* ========== 信任数据带（产地叙事 + 核心数据） ========== */
.trust{position:relative;min-height:94vh;display:flex;flex-direction:column;justify-content:space-between;color:var(--on-inv);overflow:hidden;}
.trust .media{position:absolute;inset:0;}
.trust .scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(10,10,10,.58),rgba(10,10,10,.32) 46%,rgba(10,10,10,.85));}
.trust .container{position:relative;z-index:2;width:100%;padding-top:148px;}
.trust .kicker{margin-bottom:28px;}
/* 上限用 --title-max（em，1em≈1 汉字）而非 26ch（≈15 个汉字）→ 标题一行排下 */
.trust h2{font-size:clamp(24px,3.2vw,42px);font-weight:500;line-height:1.2;letter-spacing:-.01em;max-width:var(--title-max);}
.trust .hl{color:var(--accent);}
.trust .sub{font-size:clamp(15px,1.6vw,18px);font-weight:300;opacity:.78;margin-top:30px;max-width:420px;line-height:1.85;}
.trust-stats{position:relative;z-index:2;padding-bottom:60px;}
.trust-stats .row{max-width:var(--maxw);margin:0 auto;padding:0 56px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.22);}
.trust-stats .item{padding:36px 22px 4px;border-right:1px solid rgba(255,255,255,.14);}
.trust-stats .item:last-child{border-right:none;}
.trust-stats .n{font-size:clamp(32px,4vw,52px);font-weight:600;color:var(--on-inv);line-height:1;letter-spacing:-.02em;}
.trust-stats .n .u{color:var(--accent);font-size:.5em;margin-left:3px;}
.trust-stats .l{font-size:12px;font-weight:300;opacity:.7;margin-top:16px;letter-spacing:.02em;line-height:1.65;max-width:230px;}

/* ========== 区块通用头 ========== */
.sec-head{max-width:var(--maxw);margin:0 auto;padding:0 56px;}
.sec-head .kicker{color:var(--accent);margin-bottom:22px;}
.sec-head h2{font-size:clamp(26px,3vw,40px);font-weight:500;line-height:1.15;letter-spacing:-.01em;}
.sec-head p{font-size:15px;font-weight:300;color:var(--gray-500);margin-top:20px;max-width:460px;line-height:1.85;}

/* ========== 艾能科技面料·旗舰单品 ========== */
.aineng{position:relative;min-height:90vh;display:flex;align-items:flex-end;color:#fff;overflow:hidden;}
.aineng .media{position:absolute;inset:0;}
/* 遮罩原则（铁律）：有文字 → 只在文字区定向渐变（保证可读），无文字 → 完全不加遮罩。
   ⚠️ 此处曾用 inset:0 的**全板块**遮罩，上传真实背景图后整个板块被压灰、素材色彩全丢。
   ⚠️ 也试过「50% 起渐变」，结果浅色素材上白色标题只剩 ~10% 压暗 → 完全糊掉（实测截图）。
   ⚠️ 2026-09-14：曾用「逐字 text-shadow 兜底」，但 56px 大字配 28px 模糊半径的黑影会**向内渗进笔画**，
     白字被啃成灰字；红眉题周围则糊一圈黑雾（用户反馈「字加了阴影之后并不好看」）→ **阴影全线撤销**。
   现方案：对比度**只由背景负责**，两层渐变——
     ① 左下角径向：压暗文字所在的左下角，右侧与顶部素材保持原色
     ② 竖向渐变：顶部 26% 完全通透，中段起平缓渐深，兜住标题/正文/按钮
   文字零阴影，观感干净；不改字色、不加描边。 */
.aineng .scrim{position:absolute;inset:0;z-index:1;pointer-events:none;background:
  radial-gradient(120% 70% at 2% 96%,rgba(10,10,10,.42),rgba(10,10,10,.22) 40%,rgba(10,10,10,.06) 66%,transparent 82%),
  linear-gradient(180deg,transparent 26%,rgba(10,10,10,.16) 40%,rgba(10,10,10,.44) 56%,rgba(10,10,10,.70) 74%,rgba(10,10,10,.88) 90%,rgba(10,10,10,.92) 100%);}
.aineng .container{position:relative;z-index:2;width:100%;padding-bottom:108px;padding-top:120px;}
.aineng .kicker{margin-bottom:26px;}
.aineng h2{font-size:clamp(32px,4.5vw,56px);font-weight:500;line-height:1.08;letter-spacing:-.02em;}
.aineng .hl{color:var(--accent);}
.aineng .sub{font-size:clamp(15px,1.6vw,18px);font-weight:300;opacity:.9;margin-top:28px;max-width:520px;line-height:1.9;}

/* ========== 六超·媒体瓦片组 ========== */
.six{padding:150px 0 120px;background:var(--gray-100);}
.tile-grid{max-width:var(--maxw);margin:64px auto 0;padding:0 56px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.tile{position:relative;aspect-ratio:4/5;overflow:hidden;color:#fff;}
.tile .media{position:absolute;inset:0;}
/* 上传真实图片后，白色标题/描述直接压在浅色画面上会糊掉。
   定向遮罩：只在底部 ~62% 渐深（上半屏保持素材原色），底部收在 .90 兜住标题与描述。
   ⚠️ 2026-09-14：原先再叠一层逐字 text-shadow「兜底」→ 小字周围糊黑雾，与艾能板块同病，**一并撤销**。
   对比度一律交给这层渐变承担，文字零阴影。 */
.tile::after{content:"";position:absolute;left:0;right:0;bottom:0;height:62%;z-index:1;pointer-events:none;background:linear-gradient(180deg,transparent,rgba(10,10,10,.28) 32%,rgba(10,10,10,.58) 62%,rgba(10,10,10,.86) 88%,rgba(10,10,10,.90));}
.tile .cap{position:absolute;z-index:2;left:26px;bottom:24px;right:26px;}
.tile .idx{font-family:var(--font-en);font-size:12px;letter-spacing:.2em;color:var(--accent);}
.tile h4{font-size:clamp(20px,2.2vw,26px);font-weight:500;letter-spacing:-.01em;margin-top:8px;}
.tile .desc{font-size:13.5px;font-weight:300;opacity:0;max-height:0;overflow:hidden;transition:opacity .4s var(--ease),max-height .4s var(--ease);margin-top:10px;line-height:1.7;}
.tile:hover .desc{opacity:.85;max-height:80px;}

/* ========== 研发·大媒体分栏（浅底，与矩阵/设计形成明暗对比） ========== */
.rnd{background:var(--card);color:var(--ink);padding:140px 0;}
.rnd .sec-head{color:var(--ink);}
.rnd .sec-head p:not(.kicker){color:var(--gray-500);}
.split-media{max-width:var(--maxw);margin:64px auto 0;padding:0 56px;display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:stretch;}
.rnd-media{position:relative;min-height:560px;border-radius:var(--radius);overflow:hidden;}
.rnd-media .media{position:absolute;inset:0;}
.rnd-media .media img{filter:contrast(1.05) brightness(.82);}
.rnd-media-cap{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:38px 40px;display:flex;align-items:flex-end;justify-content:flex-start;gap:22px;}
.rnd-media-cap .badge{font-size:12px;font-weight:500;letter-spacing:.04em;padding:9px 15px;border:1px solid rgba(255,255,255,.4);border-radius:999px;white-space:nowrap;color:#fff;}
.rnd-list{align-self:center;}
.rnd-row{display:flex;gap:22px;padding:28px 0;border-bottom:1px solid var(--line);transition:padding-left .35s var(--ease);}
.rnd-row:hover{padding-left:10px;}
.rnd-row .idx{font-family:var(--font-en);font-size:13px;font-weight:500;color:var(--accent);opacity:.85;padding-top:5px;min-width:22px;}
.rnd-row .body{flex:1;}
.rnd-row .tag{font-family:var(--font-en);font-size:12px;letter-spacing:.22em;color:var(--accent);text-transform:uppercase;}
.rnd-row h4{font-size:clamp(19px,2vw,24px);font-weight:500;margin:8px 0 8px;letter-spacing:-.01em;}
.rnd-row p{font-size:13.5px;font-weight:300;opacity:.74;line-height:1.8;max-width:440px;}
.rnd-more{display:block;margin-top:10px;padding-top:24px;font-size:13.5px;font-weight:500;color:var(--accent);letter-spacing:.03em;cursor:pointer;transition:letter-spacing .3s var(--ease),opacity .3s var(--ease);}
.rnd-more:hover{letter-spacing:.09em;opacity:.82;}

/* ========== 研发平台 · 图即版面（全宽影像 + 图上浮层，对齐静态原型 index.html） ========== */
.rnd.rc{padding:0;color:#fff;background:#161616;position:relative;overflow:hidden;}
.rc-media{position:absolute;inset:0;z-index:0;}
.rc-media img{width:100%;height:100%;object-fit:cover;}
.rc-scrim{position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(10,10,10,.52),rgba(10,10,10,.09) 30%,rgba(10,10,10,.14) 52%,rgba(10,10,10,.55) 78%,rgba(10,10,10,.9));}
.rc-inner{position:relative;z-index:2;width:100%;max-width:var(--maxw);margin:0 auto;padding:clamp(48px,6.5vw,72px) 56px clamp(36px,5vw,56px);min-height:clamp(680px,86vh,960px);display:flex;flex-direction:column;justify-content:space-between;box-sizing:border-box;}
.rc-head{max-width:620px;}
.rc-head .kicker{margin-bottom:20px;}
.rc-head h2{font-size:clamp(30px,3.6vw,46px);font-weight:500;line-height:1.1;letter-spacing:-.01em;color:#fff;margin:0;}
.rc-desc{font-size:14px;font-weight:300;color:rgba(255,255,255,.72);line-height:1.9;margin:18px 0 0;max-width:480px;}
.rc-head .rc-more{margin-top:clamp(24px,3vw,34px);}
.rc-lower{width:100%;}
.rc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(28px,4vw,60px);border-top:1px solid rgba(255,255,255,.18);}
.rc-item{padding-top:clamp(24px,3vw,34px);min-width:0;}
.rc-item .rc-line{display:block;width:44px;height:3px;background:var(--accent);margin-bottom:18px;}
.rc-item .rc-tag{font-family:var(--font-en);font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:rgba(255,255,255,.6);margin:0 0 14px;}
.rc-item h3{font-size:clamp(23px,2.6vw,31px);font-weight:500;line-height:1.3;letter-spacing:-.01em;color:#fff;margin:0;max-width:16em;}
.rc-more{display:inline-flex;align-items:center;gap:10px;color:#fff;font-size:14px;font-weight:500;letter-spacing:.04em;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:5px;transition:color .3s var(--ease),border-color .3s var(--ease),gap .3s var(--ease);}
.rc-more:hover{color:var(--accent);border-color:var(--accent);gap:16px;}

/* ========== 设计中心·影像展陈（深色沉浸，作为视觉高潮） ========== */
.design{padding:140px 0;background:var(--inv);}
.design .sec-head{color:var(--on-inv);}
.design .sec-head p:not(.kicker){color:rgba(255,255,255,.55);}
.design-show{max-width:var(--maxw);margin:64px auto 0;padding:0 56px;}
.design-hero{position:relative;display:block;height:62vh;min-height:440px;border-radius:var(--radius);overflow:hidden;color:#fff;text-decoration:none;border:1px solid rgba(255,255,255,.12);}
.design-hero .media{position:absolute;inset:0;}
.design-hero .media img{filter:contrast(1.05) brightness(.78);transition:transform .8s var(--ease);}
.design-hero:hover .media img{transform:scale(1.05);}
.design-hero .scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,10,.08),rgba(10,10,10,.5) 58%,rgba(10,10,10,.9));}
.design-hero .cap{position:relative;z-index:2;padding:56px;}
.design-hero .tag{font-family:var(--font-en);font-size:12px;letter-spacing:.24em;color:var(--accent);text-transform:uppercase;margin-bottom:14px;}
.design-hero h3{font-size:clamp(24px,2.8vw,38px);font-weight:500;letter-spacing:-.01em;}
.design-hero .desc{font-size:14px;font-weight:300;opacity:.82;max-width:520px;margin-top:14px;line-height:1.85;}
.design-hero .more{display:inline-flex;align-items:center;gap:10px;margin-top:26px;font-size:14px;font-weight:500;border-bottom:1px solid rgba(255,255,255,.4);padding-bottom:4px;transition:all .3s var(--ease);}
.design-hero:hover .more{color:var(--accent);border-color:var(--accent);}
.design-hero .more svg{width:1em;height:1em;}

/* ========== 产品矩阵·场景分类 ========== */
.matrix{background:var(--inv);color:var(--on-inv);padding:140px 0;}
.matrix .sec-head{color:var(--on-inv);}
.matrix .sec-head p:not(.kicker){color:rgba(255,255,255,.55);}
.matrix-grid{max-width:var(--maxw);margin:64px auto 0;padding:0 56px;display:grid;grid-template-columns:1.3fr 1fr 1fr;grid-template-rows:repeat(2,minmax(0,250px));gap:18px;}
.scene{position:relative;overflow:hidden;border-radius:var(--radius);color:#fff;display:block;background:#111;}
.scene.feature{grid-row:span 2;}
.scene .media{position:absolute;inset:0;}
.scene .scrim{background:linear-gradient(180deg,rgba(10,10,10,.08),rgba(10,10,10,.42) 52%,rgba(10,10,10,.84));}
.scene .cap{position:absolute;z-index:2;left:0;right:0;bottom:0;padding:30px 32px;display:flex;align-items:flex-end;justify-content:space-between;gap:16px;}
.scene .name{font-size:clamp(22px,2.4vw,30px);font-weight:500;letter-spacing:-.01em;line-height:1.05;}
.scene.feature .name{font-size:clamp(26px,3vw,40px);}
.scene .desc{font-size:13px;font-weight:300;opacity:.8;margin-top:9px;line-height:1.6;max-width:220px;}
.scene .arrow{width:42px;height:42px;flex:0 0 42px;border-radius:999px;border:1px solid rgba(255,255,255,.42);display:flex;align-items:center;justify-content:center;transition:all .35s var(--ease);}
.scene .arrow svg{width:16px;height:16px;}
.scene:hover .arrow{background:var(--accent);border-color:var(--accent);transform:translateX(3px);}
.scene:hover .media img,.scene:hover .media video{transform:scale(1.06);}

/* ========== 客户墙 ========== */
.clients{background:var(--gray-100);padding:130px 0 76px;overflow:hidden;}
.clients-head{max-width:var(--maxw);margin:0 auto 68px;padding:0 56px;text-align:center;}
.clients-head h2{font-size:clamp(26px,3vw,40px);font-weight:500;line-height:1.15;letter-spacing:-.01em;color:var(--ink);}
.clients-head p{font-size:clamp(15px,1.5vw,18px);font-weight:300;color:var(--gray-500);margin-top:22px;line-height:1.8;}
/* 左留白铁律：logo 墙左右起点必须与下方板块标题（.sec-head 内容边）逐像素对齐。
   做法：不做「屏幕边缘 + 固定 padding」（宽屏下会比标题少 (100vw-1280)/2 的缩进），
   而是让容器本身缩进 2×56px 后居中 —— 宽屏 = 1280 - 112 居中，窄屏 = 100% - 112。
   两种形态的左边缘都等于 max(56, (100vw-1280)/2 + 56)，与 .sec-head 完全重合。 */
.logo-marquee{position:relative;overflow:hidden;width:calc(100% - 112px);max-width:calc(var(--maxw) - 112px);margin-left:auto;margin-right:auto;}
.logo-marquee + .logo-marquee{margin-top:16px;}
.logo-track{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 8px;will-change:transform;}
.logo-track.is-scroll{flex-wrap:nowrap;justify-content:flex-start;animation:logoScroll 48s linear infinite;}
.logo-track.is-scroll.reverse{animation-direction:reverse;animation-duration:56s;}
.logo-marquee:hover .logo-track.is-scroll{animation-play-state:paused;}
/* 间距铁律：logo 单元格**不设固定宽度**。
   曾经 width:260px 是「间距巨大」的根因——logo 实际只有 ~100px 宽，却被居中塞进 260px 的空盒，
   左右各留 ~70px 空白，两个 logo 之间视觉间距高达 ~180px（其中 CSS gap 只占 24px，所以改 gap 几乎看不出变化）。
   现在改为按内容自适应宽度 + 固定左右内边距，视觉间距 = 18 + 8 + 18 = 44px（+ 图片自带透明边），与 logo 宽窄无关、恒定。*/
.logo-cell{flex:0 0 auto;display:flex;align-items:center;justify-content:center;height:104px;padding:0 18px;transition:transform .4s var(--ease);}
.logo-cell:hover{transform:translateY(-4px);}
/* Logo 显示标准：图形最高 64px、最宽 210px，按原图比例自适应缩放（不裁剪、不变形、不受上传分辨率影响） */
.logo-cell img{display:block;max-height:64px;max-width:210px;width:auto;height:auto;object-fit:contain;filter:grayscale(1);opacity:.55;transition:filter .45s var(--ease),opacity .45s var(--ease);}
.logo-cell:hover img{filter:grayscale(0);opacity:1;}
@keyframes logoScroll{from{transform:translateX(0);}to{transform:translateX(calc(var(--logo-shift,50%) * -1));}}

/* ========== 新闻·媒体卡 ========== */
.news{background:var(--gray-100);padding:76px 0 140px;}
.news .sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;}
.sec-more{flex-shrink:0;font-family:var(--font-en);font-size:13px;font-weight:500;letter-spacing:.06em;color:var(--gray-600);text-decoration:none;padding-bottom:8px;white-space:nowrap;transition:color .3s var(--ease);}
.sec-more:hover{color:var(--accent);}
.news-row{max-width:var(--maxw);margin:64px auto 0;padding:0 56px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.news-card{position:relative;display:flex;flex-direction:column;background:var(--card);border-radius:var(--radius);overflow:hidden;color:var(--ink);text-decoration:none;border:1px solid var(--line);transition:transform .45s var(--ease),box-shadow .45s var(--ease);}
.news-card:hover{transform:translateY(-6px);box-shadow:0 20px 48px rgba(10,10,10,.14);}
.news-media{position:relative;aspect-ratio:16/11;overflow:hidden;}
.news-media .media{position:absolute;inset:0;}
.news-media .media img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease);}
.news-card:hover .news-media .media img{transform:scale(1.05);}
/* 卡片右上不再有分类标签（2026-09-14 用户要求删除 TREND/Tech/Launch/Honor 等标签）。
   卡片内容全部来自文章自身：封面 = 特色图、日期 = 发布时间、标题 = 文章标题。 */
.news-row .pl-empty{grid-column:1 / -1;color:var(--gray-500);font-size:15px;padding:6px 0;}
.news-body{position:relative;z-index:2;flex:1;display:flex;flex-direction:column;padding:26px 26px 28px;background:var(--card);color:var(--ink);border-top:1px solid var(--line);}
.news-date{font-family:var(--font-en);font-size:12px;letter-spacing:.14em;color:var(--accent);margin-bottom:12px;}
.news-card h4{font-size:17px;font-weight:500;line-height:1.55;letter-spacing:-.01em;}
.news-more{margin-top:auto;padding-top:18px;font-size:12.5px;font-weight:500;color:var(--gray-600);letter-spacing:.02em;display:inline-flex;align-items:center;gap:6px;transition:color .3s var(--ease),gap .3s var(--ease);}
.news-more::after{content:"→";font-family:var(--font-en);}
.news-card:hover .news-more{color:var(--accent);gap:10px;}

/* ========== CTA·整屏媒体 ========== */
.cta-media{position:relative;min-height:78vh;display:flex;align-items:center;color:#fff;overflow:hidden;}
.cta-media .scrim{background:linear-gradient(90deg,rgba(229,0,43,.92),rgba(229,0,43,.55) 60%,rgba(229,0,43,.2));}
.cta-inner{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto;padding:0 56px;}
.cta-media h3{font-size:clamp(28px,3.6vw,46px);font-weight:500;letter-spacing:-.02em;line-height:1.12;margin-bottom:26px;max-width:12em;text-wrap:balance;}
.cta-media p{font-size:16px;font-weight:300;opacity:.94;max-width:480px;line-height:1.85;margin-bottom:42px;}
.btn-ghost{display:inline-block;background:#fff;color:var(--inv);padding:17px 50px;border-radius:999px;font-size:15px;font-weight:500;transition:transform .3s var(--ease);}
.btn-ghost:hover{transform:translateY(-3px);}
.btn-ghost:active{transform:translateY(0) scale(.98);}

/* ========== 渐显 ========== */
.js .reveal{opacity:0;transform:translateY(34px);transition:opacity 1s var(--ease),transform 1s var(--ease);transition-delay:calc(var(--i,0) * 90ms);}
.reveal.in{opacity:1;transform:none;}

/* ========== 响应式 ========== */
.nav-toggle{display:none;}
.nav-toggle .ic-x{display:none;}
.nav.open .ic-bars{display:none;}
.nav.open .ic-x{display:block;}
/* 移动端导航：搜索入抽屉、汉堡靠右、隐藏联系我们 */
.nav-search-item{align-items:center;gap:8px;display:none;cursor:pointer;}
.nav-search-item svg{width:16px;height:16px;flex:none;}
@media (max-width:1024px){
  .nav-actions{flex-direction:row-reverse;margin-left:0;}
  .nav-actions .btn-contact{display:none;}
  .nav-actions .search-toggle{display:none;}
  .nav-search-item{display:flex;}
  .container,.nav-inner,.hero-copy,.trust-stats .row,.sec-head,.tile-grid,.split-media,.design-show,.matrix-grid,.news-row,.rc-inner,.cta-inner{padding-left:28px;padding-right:28px;}
  .split-media{grid-template-columns:1fr;gap:40px;}
  .news-row{grid-template-columns:repeat(2,1fr);}
  .matrix-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto;}
  /* ⚠️ 断点陷阱：桌面 .matrix-grid 的高度来自 grid-template-rows:repeat(2,minmax(0,250px))，
     而 .scene 内部全是绝对定位子元素（.media/.scrim/.cap），**本身没有内在高度**。
     平板/手机把 rows 改成 auto 后行高算成 0px → 整个「产品矩阵」板块在 ≤1024 直接消失（只剩标题）。
     修法：在这些断点给瓦片显式 aspect-ratio。≤1024 这一档设一次即可向下继承到 768/560。 */
  .matrix-grid .scene{aspect-ratio:3/2;}
  .scene.feature{grid-row:auto;}
  .tile-grid{grid-template-columns:repeat(2,1fr);}
  .hero-ctrl{padding:0 28px;}
  .nav-toggle{display:flex;}
  .nav-links{display:none;}
  .nav.open .nav-links{
    display:flex;flex-direction:column;align-items:stretch;gap:0;margin-left:0;
    position:absolute;top:100%;left:0;right:0;
    background:var(--glass);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);
    padding:10px 28px 22px;max-height:calc(100dvh - 64px);overflow-y:auto;
  }
  .nav.open .nav-links .nav-item{color:var(--ink);padding:15px 2px;font-size:16px;border-bottom:1px solid var(--line);}
  .nav.open .nav-has{display:block;}
  .nav.open .nav-caret{display:none;}
  .nav.open .nav-dropdown{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;background:transparent;padding:4px 0 8px 14px;border-radius:0;}
  .nav.open .nav-dropdown a{color:var(--gray-600);padding:12px 2px;font-size:14px;border-bottom:1px solid var(--line);}
  /* 纵向节奏（平板）：桌面 130–150px 级 → ~100–116px */
  .six{padding:116px 0 96px;}
  .design,.matrix,.rnd{padding:108px 0;}
  .news{padding:60px 0 96px;}
  .clients{padding:100px 0 60px;}
  .clients-head{padding-left:28px;padding-right:28px;}
  .logo-marquee{width:calc(100% - 56px);max-width:calc(var(--maxw) - 56px);}
  .trust .container{padding-top:116px;}
  .trust-stats{padding-bottom:48px;}
  .trust-stats .item{padding:28px 18px 4px;}
  .aineng .container{padding-top:96px;padding-bottom:86px;}
}
@media (max-width:768px){
  .container,.nav-inner,.hero-copy,.trust-stats .row,.sec-head,.tile-grid,.split-media,.design-show,.matrix-grid,.news-row,.rc-inner,.cta-inner{padding-left:22px;padding-right:22px;}
  .news-row{grid-template-columns:repeat(2,1fr);}
  .news .sec-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .sec-more{padding-bottom:0;}
  .nav-links{display:none;}
  .trust-stats .row{grid-template-columns:1fr 1fr;}
  .trust-stats .item{border-right:none;border-bottom:1px solid rgba(255,255,255,.14);}
  .tile-grid{grid-template-columns:repeat(2,1fr);}
  .matrix-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto;}
  .rnd-media{min-height:420px;}
  .rc-inner{min-height:auto;padding-top:clamp(52px,10vh,96px);justify-content:space-between;gap:clamp(30px,6vh,56px);}
  .rc-head h2{font-size:clamp(26px,7.4vw,34px);}
  .rc-desc{font-size:13px;margin-top:14px;}
  .rc-grid{grid-template-columns:1fr;gap:0;border-top:none;}
  .rc-item{border-top:1px solid rgba(255,255,255,.14);padding:clamp(18px,3.6vw,24px) 0;}
  .rc-item:first-child{border-top:none;}
  .rc-head .rc-more{margin-top:20px;}
  .hero-ctrl{padding:0 22px;bottom:26px;}
  /* 纵向节奏（手机）：390px 屏上每段 140px 上下内距≈1/3 屏空白 → 收敛到 72px 级 */
  .six{padding:76px 0 64px;}
  .design,.matrix,.rnd{padding:72px 0;}
  .news{padding:40px 0 72px;}
  .clients{padding:68px 0 40px;}
  .clients-head{padding-left:22px;padding-right:22px;}
  .logo-marquee{width:calc(100% - 44px);max-width:calc(var(--maxw) - 44px);}
  .trust .container{padding-top:84px;}
  .trust-stats{padding-bottom:36px;}
  .trust-stats .item{padding:22px 16px 4px;}
  .aineng .container{padding-top:68px;padding-bottom:60px;}
}
/* 手机窄屏（≤560）：双列在此塌成单列。
   ⚠️ 768 平板必须保持双列 —— 六宫格若在 768 掉到单列，
   724px 宽 × 4/5 比例 = 905px 高的巨卡，一屏放不下一张。 */
@media (max-width:560px){
  .news-row,.tile-grid,.matrix-grid{grid-template-columns:1fr;}
  .trust-stats .row{grid-template-columns:1fr 1fr;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}