/* ============================================================
   默知数 · Modaris — 公司主站 (modaris.cn/)
   方向「蒸馏深蓝 Distilled Navy」: 一座安静运转的精密蒸馏装置。
   极慢 · 克制 · 单一焦点 · 尺度对比。reduced-motion 降级后仍是高级静态构图。
   纯 CSS + 轻量原生 JS(app.js); 系统字体(大陆托管, 无 Google Fonts)。
   ============================================================ */
:root{
  --navy:#001858; --navy-deep:#00103a; --navy-panel:#00123c; --navy-700:#0a2a6e;
  --blue:#0060fd; --blue-600:#0b4fd6; --blue-400:#4f8bff; --blue-200:#aec9ff; --blue-50:#ebf1ff;
  --paper:#fbfcfe; --white:#fff; --mist:#eff3f9; --line:#dde4f0; --line-2:#c7d2e6; --slate:#586484; --ink:#001858;
  --ink-dark:#c2cfe8; --ink-dark-2:#aebbd9;
  --r-sm:8px; --r:14px; --r-lg:22px;
  --shadow:0 1px 2px rgba(0,24,88,.05),0 14px 40px -16px rgba(0,24,88,.16);
  --shadow-sm:0 1px 2px rgba(0,24,88,.05),0 6px 18px -10px rgba(0,24,88,.14);
  --ease-out:cubic-bezier(.16,1,.3,1); --ease-reveal:cubic-bezier(.2,.7,.2,1);
  --font:-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Code","JetBrains Mono",Menlo,Consolas,monospace;
  /* 内联噪点哑光(feTurbulence data-URI): 把大面积渐变磨成天文台哑光, 压 banding */
  --noise:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:#00102e;line-height:1.6;letter-spacing:.005em;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:var(--blue-600);text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px;position:relative;z-index:2}

/* 全局背景视频: 固定最底层, 整页(不止 hero)都透出它; 上覆一层暗幕保证各区文字对比 */
:root{ --c1:#00123c; --c2:#1336a4; --c3:#00103a; --glow:rgba(0,96,253,.34); --gy:14%; --lite:#fbfcfe; }
.page-bg{position:fixed;inset:0;width:100%;height:100%;object-fit:cover;z-index:-3;opacity:.35}   /* 更隐(比上版再低30%), 透出深色底 */
.page-bg-poster{position:fixed;inset:0;z-index:-3;display:none;opacity:.35;
  background:#00102e url(assets/video/hero-poster.jpg) center/cover no-repeat}
.page-bg-scrim{position:fixed;inset:0;z-index:-2;pointer-events:none;background:rgba(2,10,30,.15)}

/* — type — */
.eyebrow{font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--blue-600)}
.eyebrow::before{content:"";display:inline-block;width:18px;height:2px;background:currentColor;margin-right:10px;vertical-align:middle;opacity:.85}
.eyebrow.on-dark{color:var(--blue-400)}
.hud-label{font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.14em;color:rgba(79,139,255,.55)}
h1,h2,h3{font-weight:700;line-height:1.12;letter-spacing:0}
.display{font-weight:800;letter-spacing:.01em;line-height:1.12}
.blue{color:var(--blue)} .slate{color:var(--slate)}
.sec-head{max-width:780px;margin-bottom:38px}
.sec-head h2{font-size:clamp(28px,3.4vw,40px);margin:14px 0 12px}
.sec-head p{font-size:17px;color:var(--slate)}
/* 波光粼粼流光 v2: 单条 keyframes 驱动双层【整数周期】反向位移(数学无缝, 循环不可见)。
   高光层(260%)3 条宽软光带向左 2 周期; 底层水色(180%)6 段起伏向右 2 周期; 7.5s 共同循环。
   蓝白边界全部用 ≥18% 的宽过渡(柔), 无硬交界。 */
.shine{background:
    linear-gradient(102deg,
      transparent 0%, rgba(214,236,255,.55) 9%, rgba(150,196,255,.28) 17%, transparent 26%,
      transparent 34%, rgba(222,240,255,.6) 43%, rgba(150,196,255,.3) 51%, transparent 60%,
      transparent 68%, rgba(214,236,255,.55) 77%, rgba(150,196,255,.28) 85%, transparent 94%, transparent 100%),
    linear-gradient(100deg,
      var(--blue) 0%, #7db1ff 9%, var(--blue-400) 18%, #a8ccff 28%, #5f9bff 38%,
      #bcd8ff 48%, var(--blue-400) 58%, #8fc0ff 68%, #5f9bff 78%, #9cc4ff 88%, var(--blue) 100%);
  background-size:260% 100%,180% 100%;
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;
  white-space:nowrap;animation:shimmer 7.5s linear infinite}
@keyframes shimmer{to{background-position:-520% 0,360% 0}}
@supports not ((-webkit-background-clip:text) or (background-clip:text)){
  .shine{-webkit-text-fill-color:initial;color:var(--blue)!important;background:none!important;animation:none!important}
}

/* — 滚动揭示 — */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s var(--ease-reveal),transform .7s var(--ease-reveal)}
.reveal.in{opacity:1;transform:none}
.stagger>*{opacity:0;transform:translateY(16px);transition:opacity .7s var(--ease-reveal),transform .7s var(--ease-reveal)}
.stagger.in>*{opacity:1;transform:none}
.stagger.in>*:nth-child(2){transition-delay:.08s}
.stagger.in>*:nth-child(3){transition-delay:.16s}
.stagger.in>*:nth-child(4){transition-delay:.24s}
.stagger.in>*:nth-child(5){transition-delay:.32s}
.stagger.in>*:nth-child(6){transition-delay:.40s}

/* — 数据线分隔(段间过渡: 渐变横线 + 中点发光节点) — */
.seg-line{position:relative;height:1px;max-width:1180px;margin:0 auto;
  background:linear-gradient(90deg,transparent,rgba(79,139,255,.28) 50%,transparent)}
.seg-line::after{content:"";position:absolute;left:50%;top:50%;width:5px;height:5px;margin:-2.5px;border-radius:50%;
  background:var(--blue-400);box-shadow:0 0 8px rgba(79,139,255,.8)}
.seg-line.on-dark{background:linear-gradient(90deg,transparent,rgba(120,160,255,.32) 50%,transparent)}

/* — drop / node / circuit motif — */
.drop{position:relative;display:inline-block;width:1em;height:1.18em;background:var(--blue);
  border-radius:50% 50% 50% 50%/64% 64% 36% 36%;transform:rotate(45deg)}
.drop::after{content:"";position:absolute;inset:0;margin:auto;width:34%;height:34%;transform:rotate(-45deg);
  background:#fff;clip-path:polygon(50% 0,58% 42%,100% 50%,58% 58%,50% 100%,42% 58%,0 50%,42% 42%)}
.drop-list{list-style:none}
.drop-list li{position:relative;padding-left:28px;margin:0 0 14px;color:var(--slate)}
.drop-list li b{color:var(--ink);font-weight:700}
.drop-list li::before{content:"";position:absolute;left:3px;top:.5em;width:10px;height:12px;background:var(--blue);
  border-radius:50% 50% 50% 50%/62% 62% 38% 38%;transform:rotate(45deg)}
/* 四角星(北极星/sparkle, 全站≤3颗) */
.star{position:relative;display:block;background:#fff;
  clip-path:polygon(50% 0,58% 42%,100% 50%,58% 58%,50% 100%,42% 58%,0 50%,42% 42%)}

/* — buttons / chips — */
.btn{position:relative;display:inline-flex;align-items:center;gap:9px;font-family:var(--font);font-weight:600;font-size:15px;
  padding:13px 24px;border-radius:8px;border:1.5px solid transparent;cursor:pointer;transition:.18s ease;overflow:hidden}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 6px 16px -12px rgba(0,96,253,.5)}
.btn-primary:hover{background:var(--blue-600);transform:translateY(-1px);box-shadow:0 8px 20px -12px rgba(0,96,253,.5)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-ghost.dark{color:var(--navy);border-color:var(--line-2)}
.chip{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:11.5px;font-weight:700;
  letter-spacing:.06em;padding:5px 12px;border-radius:6px;background:var(--blue-50);color:var(--blue-600)}
.chip.live{background:rgba(0,96,253,.16);color:#bcd3ff}

/* — 深色区: hero 用背景视频; method/cta/footer 透明 → 透出会随滚动变色的全局 #scenebg — */
.hero{color:var(--ink-dark)}
.section-dark,.cta-band{background:transparent;color:var(--ink-dark);overflow:hidden}
.hero::after,.section-dark::after,.cta-band::after{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background-image:var(--noise);background-size:180px 180px;opacity:.05;mix-blend-mode:overlay}
/* 亮区蓝图数据场(更炫: 蓝色细网格 + 强一点的角落辉光) */
.section-light,.section-mist{overflow:hidden}
.section-light::before,.section-mist::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(640px 460px at 86% 1%,rgba(0,96,253,.11),transparent 56%),
            radial-gradient(560px 420px at 3% 100%,rgba(79,139,255,.085),transparent 60%),
            linear-gradient(to right,rgba(0,96,253,.045) 1px,transparent 1px),
            linear-gradient(to bottom,rgba(0,96,253,.045) 1px,transparent 1px);
  background-size:auto,auto,44px 44px,44px 44px;
  -webkit-mask-image:radial-gradient(ellipse 120% 92% at 50% 24%,#000 30%,transparent 92%);
  mask-image:radial-gradient(ellipse 120% 92% at 50% 24%,#000 30%,transparent 92%)}

/* — NAV — */
.nav{position:sticky;top:0;z-index:50;background:rgba(0,18,60,.86);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.08);transition:background .3s ease,box-shadow .3s ease}
@supports not (backdrop-filter:blur(2px)){.nav{background:rgba(0,16,42,.97)}}
.nav.scrolled{background:rgba(0,16,42,.94);box-shadow:0 10px 30px -18px rgba(0,0,0,.7)}
.nav.scrolled::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,96,253,.5),transparent)}
.nav .wrap{display:flex;align-items:center;gap:24px;height:66px}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:34px;height:34px;border-radius:7px}
.brand .wm{display:flex;flex-direction:column;line-height:1}
.brand .cn{color:#fff;font-size:17px;font-weight:700;letter-spacing:.04em}
.brand .en{color:var(--blue-200);font-size:10px;font-weight:600;letter-spacing:.28em;font-family:var(--mono);margin-top:3px}
.nav nav{margin-left:auto;display:flex;gap:30px}
.nav nav a{color:#c4d0ea;font-size:14.5px;font-weight:500;transition:.15s;position:relative}
.nav nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-6px;height:1.5px;background:var(--blue-400);transition:right .25s ease}
.nav nav a:hover{color:#fff}
.nav nav a:hover::after{right:0}
.nav .cta{margin-left:8px;padding:8px 20px;font-size:14px}
.lang-toggle{padding:5px 12px;border:1px solid rgba(174,201,255,.4);border-radius:8px;background:transparent;
  color:#c4d0ea;font:600 12px/1 var(--mono);letter-spacing:.06em;cursor:pointer;transition:.18s;white-space:nowrap}
.lang-toggle:hover{color:#fff;border-color:rgba(174,201,255,.85);background:rgba(120,160,255,.14)}
@media (max-width:900px){.lang-toggle{margin-left:auto}}

/* — HERO (背景视频) — */
.hero{position:relative;overflow:hidden;min-height:88vh;display:flex;align-items:center}
.hero-scrim{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(100deg, rgba(0,8,26,.9) 0%, rgba(0,8,26,.64) 32%, rgba(0,8,26,.16) 62%, rgba(0,8,26,.36) 100%),
            linear-gradient(0deg, rgba(0,8,26,.5), transparent 28%)}
.hero>.wrap{width:100%}
.hero .circuit{position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(to right,rgba(120,160,255,.05) 1px,transparent 1px),linear-gradient(to bottom,rgba(120,160,255,.05) 1px,transparent 1px);
  background-size:38px 38px;
  -webkit-mask-image:radial-gradient(ellipse 80% 70% at 62% 42%,#000 26%,transparent 86%);
  mask-image:radial-gradient(ellipse 80% 70% at 62% 42%,#000 26%,transparent 86%)}
/* 体积光: 软边 radial-gradient(不用 filter:blur), 进场放大淡入 */
.hero .glow{position:absolute;inset:0;z-index:0;pointer-events:none;opacity:0;transform:scale(1.04);
  background:radial-gradient(720px 480px at 78% 30%,rgba(0,96,253,.22),transparent 60%),
             radial-gradient(560px 420px at 12% 92%,rgba(79,139,255,.12),transparent 62%);
  animation:glow-in 2.4s var(--ease-out) .15s forwards,glow-breathe 22s ease-in-out 2.6s infinite alternate}
@keyframes glow-in{to{opacity:.9;transform:scale(1)}}
@keyframes glow-breathe{from{transform:scale(1)}to{transform:scale(1.05)}}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding:84px 32px 92px}
.hero-text>*{opacity:0;transform:translateY(14px);animation:rise .8s var(--ease-out) forwards}
.hero-text>*:nth-child(1){animation-delay:.15s}
.hero-text>*:nth-child(2){animation-delay:.25s}
.hero-text>*:nth-child(3){animation-delay:.35s}
.hero-text>*:nth-child(4){animation-delay:.45s}
.hero-text>*:nth-child(5){animation-delay:.55s}
@keyframes rise{to{opacity:1;transform:none}}
.hero h1{font-size:clamp(36px,5.4vw,66px);color:#fff;margin:18px 0 22px}
.hero .lead{font-size:18px;color:var(--ink-dark);max-width:560px;line-height:1.66}
.hero .tag{margin-top:24px;font-family:var(--mono);font-size:13px;letter-spacing:.02em;color:#8ea4cf}
.hero .tag b{color:#cdd9f2;font-weight:700}
.hero .actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.hero-text>*:nth-child(6){animation-delay:.62s}
.dl-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13.5px;color:#aebfe0;
  text-decoration:none;border-bottom:1px solid transparent;transition:color .18s,border-color .18s;width:fit-content}
.dl-link:hover{color:#eaf2ff;border-bottom-color:rgba(174,201,255,.65)}
/* hero 视觉: logo 水滴(已凝成) + 反向慢转双环 + 露珠签名动效 */
.hero-art{position:relative;display:grid;place-items:center;min-height:432px;transform-style:preserve-3d;
  transform:perspective(680px) rotateX(var(--ry,0deg)) rotateY(var(--rx,0deg)) scale(1.2);transition:transform .25s ease}
.hero-art:hover{transform:perspective(680px) rotateX(var(--ry,0deg)) rotateY(var(--rx,0deg)) scale(1.3)}   /* hover: 更大倾角(JS data-tilt=14)+ 抬升放大 */
.hero-art .halo{position:absolute;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,96,253,.4),transparent 60%)}
/* 原有公司 logo(不改) + 周围叠加: data(0/1 在 M 外侧上升) + product(一篇篇文件向下流出渐隐) */
.logo-stage{position:relative;z-index:2;width:230px;height:230px}
.logo-stage .mark{position:absolute;inset:0;width:230px;height:230px;border-radius:28px;
  box-shadow:0 34px 90px -30px rgba(0,0,0,.7),0 0 60px -10px rgba(0,96,253,.45)}
/* data: 0/1 沿 logo「M」两条腿向上、向中间聚拢, 到 M 中央被提炼渐隐 */
.logo-stage .bit{position:absolute;top:0;left:0;font-family:var(--mono);font-size:12px;font-weight:700;color:#cfe0ff;
  text-shadow:0 0 8px rgba(79,139,255,1);offset-rotate:0deg;opacity:0;
  offset-path:path("M44 162 L44 56 Q 50 40 67 40 Q 92 52 113 76");animation:bitflow 3.8s linear infinite}
.logo-stage .bit.r{offset-path:path("M186 162 L186 56 Q 180 40 161 40 Q 136 52 113 76")}
@keyframes bitflow{0%{offset-distance:0%;opacity:0}16%{opacity:1}64%{opacity:1}100%{offset-distance:100%;opacity:0}}
@supports not (offset-path:path("M0 0")){.logo-stage .bit{display:none}}
/* 文件由 logo 水滴"凝结滴落 → 幻化成文件"。性能版: 只动 transform/opacity(GPU 合成, 不卡)。
   .doc 负责下落 + 总淡出; .bead = 点朝上的水珠(上小下大, clip-path 切形 + drop-shadow 发光);
   .sheet = 数据片(淡入放大)。水珠溶解的同时数据片浮现 → 交叠即"幻化"。子层 animation-delay:inherit 与各自 .doc 同步。 */
.logo-stage .doc{position:absolute;left:50%;top:171px;margin-left:-13px;width:26px;height:34px;
  opacity:0;will-change:transform,opacity;animation:docfall 7.2s ease-in infinite}
@keyframes docfall{
  0%  {opacity:0; transform:translateY(-8px)}
  6%  {opacity:1; transform:translateY(-3px)}
  18% {opacity:1; transform:translateY(10px)}
  42% {opacity:1; transform:translateY(36px)}
  76% {opacity:.5;transform:translateY(84px)}
  100%{opacity:0; transform:translateY(114px)}
}
/* 水珠层与数据片同尺寸(26×34)。clip-path 把上次那只好看的 💧 → 整张长方形(锚点固定上右下左、控制点外推四角 → 棱角化不扭转, 无 scale 不卡)。
   形状与颜色【同步】渐变(亮蓝→文件淡色)。关键: 水珠【不淡出】, 形变后【保持】为文件底色 → 背景连续, 不会出现"浅→深(透明)"的空档;
   .sheet 仅作【透明覆盖层】(描边+辉光+文字行), 淡入补全细节, 不带底色 → 不引入透明度凹陷。整体由 .doc 容器在末尾统一淡出。 */
.logo-stage .doc .bead{position:absolute;inset:0;
  background:radial-gradient(circle at 50% 35%,rgba(178,210,255,.6) 0%,rgba(100,152,250,.54) 42%,rgba(48,112,228,.5) 100%);
  clip-path:path('M13 1 C 17 8 21 12 21 15.5 C 21 20 17.5 24 13 24 C 8.5 24 5 20 5 15.5 C 5 12 9 8 13 1 Z');
  will-change:opacity;animation:beadm 7.2s linear infinite;animation-delay:inherit}
@keyframes beadm{
  0%  {opacity:0; clip-path:path('M13 1 C 17 8 21 12 21 15.5 C 21 20 17.5 24 13 24 C 8.5 24 5 20 5 15.5 C 5 12 9 8 13 1 Z'); background:radial-gradient(circle at 50% 35%,rgba(178,210,255,.6) 0%,rgba(100,152,250,.54) 42%,rgba(48,112,228,.5) 100%)}
  10% {opacity:1; clip-path:path('M13 1 C 17 8 21 12 21 15.5 C 21 20 17.5 24 13 24 C 8.5 24 5 20 5 15.5 C 5 12 9 8 13 1 Z'); background:radial-gradient(circle at 50% 35%,rgba(178,210,255,.6) 0%,rgba(100,152,250,.54) 42%,rgba(48,112,228,.5) 100%)}
  24% {opacity:1; clip-path:path('M13 1 C 17 8 21 12 21 15.5 C 21 20 17.5 24 13 24 C 8.5 24 5 20 5 15.5 C 5 12 9 8 13 1 Z'); background:radial-gradient(circle at 50% 35%,rgba(178,210,255,.6) 0%,rgba(100,152,250,.54) 42%,rgba(48,112,228,.5) 100%)}
  44% {opacity:1; clip-path:path('M13 0 C 26 0 26 0 26 17 C 26 34 26 34 13 34 C 0 34 0 34 0 17 C 0 0 0 0 13 0 Z'); background:radial-gradient(circle at 50% 35%,rgba(236,244,255,.26) 0%,rgba(150,185,255,.16) 42%,rgba(120,165,255,.10) 100%)}
  100%{opacity:1; clip-path:path('M13 0 C 26 0 26 0 26 17 C 26 34 26 34 13 34 C 0 34 0 34 0 17 C 0 0 0 0 13 0 Z'); background:radial-gradient(circle at 50% 35%,rgba(236,244,255,.26) 0%,rgba(150,185,255,.16) 42%,rgba(120,165,255,.10) 100%)}
}
.logo-stage .doc .sheet{position:absolute;inset:0;border-radius:3px;
  border:1px solid rgba(165,198,255,.36);
  box-shadow:0 0 16px rgba(70,135,255,.4),inset 0 0 9px rgba(170,200,255,.18);
  opacity:0;will-change:opacity;animation:sheetm 7.2s linear infinite;animation-delay:inherit}
.logo-stage .doc .sheet::after{content:"";position:absolute;left:5px;top:11px;width:16px;height:1.4px;border-radius:1px;
  background:rgba(255,132,120,.85);
  box-shadow:0 0 5px rgba(255,112,100,.6),0 5px 0 rgba(160,195,255,.5),0 10px 0 rgba(160,195,255,.38)}
@keyframes sheetm{ 0%,28%{opacity:0} 46%{opacity:1} 100%{opacity:1} }
.hero-art .ring{position:absolute;border-radius:50%;will-change:transform}
.hero-art .r1{width:330px;height:330px;border:1px solid rgba(120,160,255,.24);animation:spin 60s linear infinite}
.hero-art .r2{width:420px;height:420px;border:1px dashed rgba(120,160,255,.16);animation:spin 90s linear infinite reverse}
.hero-art .ring i{position:absolute;top:-3px;left:50%;width:6px;height:6px;margin-left:-3px;border-radius:50%;
  background:var(--blue-400);box-shadow:0 0 8px rgba(79,139,255,.9)}
.hero-art .r2 i{top:auto;bottom:-3px;background:var(--blue-200)}
@keyframes spin{to{transform:rotate(360deg)}}
/* 露珠凝结-滴落: 全站唯一持续签名动效 */
.logo-stage .dew{position:absolute;z-index:3;top:168px;left:50%;width:10px;height:13px;margin-left:-5px;
  background:radial-gradient(circle at 50% 35%,#cfe0ff,var(--blue) 75%);
  border-radius:50% 50% 50% 50%/62% 62% 38% 38%;opacity:0;
  box-shadow:0 0 10px rgba(0,96,253,.7);animation:drip 9s cubic-bezier(.55,0,.45,1) infinite}
@keyframes drip{0%,52%{transform:translateY(0) scaleY(.6);opacity:0}68%{transform:translateY(8px) scaleY(1.25);opacity:.95}100%{transform:translateY(70px) scaleY(.7);opacity:0}}

/* — sections — */
section{position:relative;padding:92px 0}
.section-dark{color:var(--ink-dark)}
/* 亮区改"磨砂玻璃": 半透明 → 透出随滚动变色的 #scenebg, 整页背景连续变化(可见) */
.section-light{background:rgba(252,253,255,.80)}
.section-mist{background:rgba(245,248,253,.78)}
.section-dark .sec-head h2{color:#fff}
.section-dark .sec-head p{color:var(--ink-dark-2)}
.light-glow{display:none}   /* 已由 .section-light::before 数据场取代 */
/* 卡片揭示时一次性光带掠过(科幻特效) */
.pcard,.mcard{overflow:hidden}
.pcard::after,.mcard::after{content:"";position:absolute;inset:0;z-index:3;pointer-events:none;
  background:linear-gradient(105deg,transparent 32%,rgba(150,185,255,.18) 50%,transparent 68%);transform:translateX(-130%)}
.stagger.in .pcard::after,.stagger.in .mcard::after{animation:cardsweep 1.15s ease .25s 1}
@keyframes cardsweep{to{transform:translateX(130%)}}

/* pull quote */
.pull{margin-top:30px;position:relative;padding:8px 0 8px 22px;font-size:19px;color:var(--navy);line-height:1.6;max-width:840px}
.pull::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;border-radius:2px;
  background:linear-gradient(var(--blue),var(--blue-400));box-shadow:0 0 10px rgba(0,96,253,.4)}
.pull b{color:var(--blue-600)}
.who-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.who-grid p{font-size:16.5px;color:var(--slate);margin-bottom:16px}
.who-grid p b{color:var(--ink)}

/* product matrix */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pcard{position:relative;background:var(--white);border:1px solid var(--line);border-radius:12px;padding:24px 24px 22px;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;min-height:188px;transition:transform .25s var(--ease-out),box-shadow .25s,border-color .25s}
.pcard:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line-2)}
.pcard .top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
/* 瓷贴=文件折角: 三角微圆(4px)+右上斜切, 呼应"文档"业务; ::after 小三角作折页阴影 */
.pcard .ic{position:relative;width:38px;height:38px;background:var(--blue-50);display:grid;place-items:center;
  clip-path:path("M4 0 H27 L38 11 V34 Q38 38 34 38 H4 Q0 38 0 34 V4 Q0 0 4 0 Z")}
.pcard .ic::after{content:"";position:absolute;top:0;right:0;width:11px;height:11px;
  background:rgba(0,96,253,.16);clip-path:polygon(0 0,100% 100%,0 100%)}
.pcard.is-live .ic::after{background:rgba(238,67,41,.2)}
.pcard h3{font-size:18.5px;margin:2px 0 8px;color:var(--ink)}
.pcard p{font-size:14px;color:var(--slate);line-height:1.6;flex:1}
.pcard .go{margin-top:14px;font-size:14px;font-weight:600;color:var(--blue-600);display:inline-flex;align-items:center;gap:6px}
/* is-live 主角卡: 蓝边 + 左上四角星 + HUD 准星角标 + 桌面视差 */
/* 已上线卡(招标文件智能体)的强调色偏向产品本身的橘红(朱红 #ee4329) */
.pcard.is-live{border-color:rgba(238,67,41,.4);transform:perspective(900px) rotateX(var(--ry,0deg)) rotateY(var(--rx,0deg))}
.pcard.is-live:hover{box-shadow:0 18px 46px -18px rgba(238,67,41,.4);border-color:rgba(238,67,41,.62)}
.pcard.is-live .ic{background:rgba(238,67,41,.12)}
.pcard.is-live .spark{background:#ee4329;filter:drop-shadow(0 0 4px rgba(238,67,41,.6))}
.pcard.is-live .tick{border-color:rgba(238,67,41,.5)}
.pcard.is-live .chip.live{background:#ee4329;color:#fff}   /* 「已上线」醒目: 实心橘红 + 白字, 不再灰扑扑 */
/* 两个动作做成描边按钮(各带边框)、彼此拉开距离 */
.pcard .go-row{display:flex;flex-wrap:wrap;gap:14px 22px;align-items:center;margin-top:18px}
.pcard.is-live .go{margin-top:0;color:#d23a1f;padding:9px 18px;border:1px solid rgba(238,67,41,.55);border-radius:8px;transition:background .18s,border-color .18s}
.pcard.is-live .go:hover{background:rgba(238,67,41,.09);border-color:#ee4329}
.pcard.is-live .go-dl{color:#b9472f}
.pcard .spark{position:absolute;top:13px;left:13px;width:12px;height:12px;background:var(--blue);
  clip-path:polygon(50% 0,58% 42%,100% 50%,58% 58%,50% 100%,42% 58%,0 50%,42% 42%);filter:drop-shadow(0 0 4px rgba(0,96,253,.6))}
.pcard .tick{position:absolute;width:9px;height:9px;border-color:rgba(79,139,255,.45);transition:.25s var(--ease-out)}
.pcard .tick.tl{top:9px;left:9px;border-top:1.5px solid;border-left:1.5px solid}
.pcard .tick.tr{top:9px;right:9px;border-top:1.5px solid;border-right:1.5px solid}
.pcard .tick.bl{bottom:9px;left:9px;border-bottom:1.5px solid;border-left:1.5px solid}
.pcard .tick.br{bottom:9px;right:9px;border-bottom:1.5px solid;border-right:1.5px solid}
.pcard.is-live:hover .tick{width:14px;height:14px;border-color:rgba(238,67,41,.7)}
.pcard.is-soon{background:#f7f9fd}
.pcard.is-soon h3{color:#41507a}
.pcard.is-soon .chip{background:#e7edf6;color:var(--slate)}
.pcard.dashed{background:transparent;border-style:dashed;justify-content:center;align-items:center;text-align:center}
.pcard.dashed .d-t{font-size:15px;font-weight:700;color:var(--navy)}
.pcard.dashed p{flex:none;margin-top:8px;text-align:center}

/* method (dark) */
.method-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.mcard{position:relative;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-lg);
  padding:24px 26px;backdrop-filter:blur(6px)}
@supports not (backdrop-filter:blur(2px)){.mcard{background:rgba(20,40,90,.55)}}
.mcard .n{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--blue-400);letter-spacing:.1em}
.mcard h3{font-size:19px;color:#fff;margin:10px 0 8px}
.mcard p{font-size:14.5px;color:var(--ink-dark-2);line-height:1.62}
.mcard p b{color:#cdd9f2}
.mcard .polaris{position:absolute;top:18px;right:20px;width:16px;height:16px;background:#fff;
  clip-path:polygon(50% 0,58% 42%,100% 50%,58% 58%,50% 100%,42% 58%,0 50%,42% 42%);
  filter:drop-shadow(0 0 6px rgba(120,160,255,.9));animation:polaris 6s ease-in-out infinite alternate}
@keyframes polaris{from{opacity:.5;transform:rotate(-4deg) scale(.94)}to{opacity:1;transform:rotate(4deg) scale(1.06)}}

/* name / brand meaning */
.name-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.ncard{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 32px;box-shadow:var(--shadow-sm);overflow:hidden}
.ncard .k{font-size:32px;font-weight:800;letter-spacing:-.02em;color:var(--navy)}
.ncard p{margin-top:14px;font-size:15.5px;color:var(--slate);line-height:1.7;position:relative;z-index:1}
.ncard p b{color:var(--ink)} .ncard p i{font-style:italic;color:var(--blue-600)}
.ncard .polaris-line{position:absolute;right:-30px;top:30px;width:180px;height:180px;opacity:.5;pointer-events:none}

/* CTA band */
.cta-band{position:relative;overflow:hidden}
.cta-band .glow{position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(640px 320px at 50% -6%,rgba(0,96,253,.22),transparent 62%)}
.cta-band .wrap{text-align:center;padding:80px 32px}
.cta-band h2{font-size:clamp(28px,3.6vw,40px);color:#fff;margin-bottom:10px}
.cta-band h2 em{font-style:normal;color:var(--blue-400);text-shadow:0 0 18px rgba(0,96,253,.45)}
.cta-band p{color:var(--ink-dark-2);font-size:16px;margin-bottom:26px}

/* footer: 透明 → 透出 #scenebg 最深处; 底部加一层极淡暗幕沉底, 保证文字对比 */
.foot{position:relative;background:linear-gradient(180deg,transparent,rgba(0,16,42,.5));color:#9fb0d4;font-size:14px;overflow:hidden}
.foot .wrap{padding:56px 32px 30px}
.foot .top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
.foot .brand .cn{font-size:16px}
.foot .co{margin-top:16px;color:#c3d0ea;font-weight:600}
.foot .sl{margin-top:6px;color:#7e90b8;font-family:var(--mono);font-size:12px;letter-spacing:.03em}
.foot .col h4{color:#cdd9f2;font-size:13px;font-weight:700;letter-spacing:.04em;margin-bottom:14px}
.foot .col a{display:block;color:#9fb0d4;margin-bottom:10px}
.foot .col a:hover{color:#fff}
.foot .bottom{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:space-between;padding-top:22px;color:#6c7ea6;font-size:12.5px}
.foot .bottom a{color:#6c7ea6}.foot .bottom a:hover{color:#aebbd9}

/* — 创始人页 /people（背景与主页一致；内容用深色磨砂卡承托） — */
.founder .wrap{padding:118px 32px 96px}
.nav nav a.active{color:#fff}
.nav nav a.active::after{right:0}
.profile{display:grid;grid-template-columns:300px 1fr;gap:40px;align-items:start;margin-top:40px;
  background:rgba(8,20,48,.56);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);
  border:1px solid rgba(120,160,255,.18);border-radius:22px;padding:36px;
  box-shadow:0 34px 80px -34px rgba(0,0,0,.65)}
.profile-aside{display:flex;flex-direction:column;gap:18px}
.profile-photo{width:100%;height:auto;border-radius:16px;border:1px solid rgba(150,190,255,.28);
  box-shadow:0 18px 44px -18px rgba(0,0,0,.6),0 0 30px -10px rgba(0,96,253,.3);display:block}
.profile-id .pname{font-size:22px;font-weight:700;color:#fff;display:flex;align-items:baseline;gap:9px;flex-wrap:wrap}
.profile-id .pname span{font-size:13.5px;font-weight:500;color:#9fb2d6;font-family:var(--mono);letter-spacing:.04em}
.profile-id .prole{margin-top:5px;font-size:14px;color:var(--blue-200)}
.profile-links{display:flex;flex-wrap:wrap;gap:10px}
.profile-links a{display:inline-flex;align-items:center;gap:6px;padding:8px 15px;font-size:13px;font-weight:600;
  color:#cfe0ff;border:1px solid rgba(150,190,255,.4);border-radius:8px;transition:background .18s,border-color .18s,color .18s}
.profile-links a:hover{background:rgba(120,160,255,.15);border-color:rgba(150,190,255,.85);color:#fff}
.wecom-card{margin:6px 0 0;display:flex;flex-direction:column;gap:9px}
.wecom-card img{width:100%;max-width:150px;height:auto;border-radius:5px;
  border:1px solid rgba(150,190,255,.28);box-shadow:0 8px 22px rgba(3,10,27,.4)}
.wecom-card figcaption{font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;color:#9fb2d6}
.profile-main{color:#c4d0ea;font-size:15.5px;line-height:1.78;min-width:0}
.profile-main p{margin:0 0 16px}
.profile-main h3{color:#fff;font-size:15.5px;margin:26px 0 13px;letter-spacing:.01em}
.profile-main .hl{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.profile-main .hl li{position:relative;padding-left:18px;font-size:14.5px;color:#bcccea}
.profile-main .hl li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--blue-400)}
.skill-tags{display:flex;flex-wrap:wrap;gap:8px}
.skill-tags span{font-family:var(--mono);font-size:11.5px;color:#aebfe0;padding:5px 11px;border-radius:6px;
  background:rgba(120,160,255,.1);border:1px solid rgba(120,160,255,.22)}
@media (max-width:780px){
  .founder .wrap{padding:96px 22px 70px}
  .profile{grid-template-columns:1fr;gap:24px;padding:24px}
  .profile-photo{max-width:230px}
  .profile-aside{align-items:flex-start}
}

/* — responsive — */
@media(max-width:900px){
  .hero{min-height:74vh}
  .hero .wrap{grid-template-columns:1fr;padding:56px 22px 60px}
  .hero-text{min-width:0}
  .hero-text>*{animation:none;opacity:1;transform:none}   /* 移动端首屏即显, 保速 */
  .hero .tag{font-size:12px;letter-spacing:.01em;word-break:break-word}
  .page-bg{display:none} .page-bg-poster{display:block}   /* 移动端不自动播放重视频, 整页用静态海报省流省电 */
  .nav nav{display:none}
  .who-grid,.prod-grid,.method-grid,.name-grid,.foot .top{grid-template-columns:1fr}
  section{padding:60px 0}
  .wrap{padding:0 22px}
}

/* — prefers-reduced-motion: 降级成高级静态构图(不只是关 transition) — */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal,.stagger>*{opacity:1!important;transform:none!important}
  .hero-text>*{opacity:1!important;transform:none!important}
  .hero .glow{opacity:.9!important;transform:none!important}
  .hero-art{transform:none!important}
  .hero-art .dew{opacity:.9!important;transform:translateY(8px) scaleY(1.2)!important}  /* 定格在已凝成 */
  .shine{-webkit-text-fill-color:initial;color:var(--blue)!important;background:none!important}
}
/* 触屏/无 hover: 关 3D 视差 */
@media (hover:none){.hero-art,.pcard.is-live{transform:none!important}}