/* =============================================================
   粒夏智能 AImage · 工业 AI 视觉检测官网
   设计系统 · 白底科技风 / 渐变 / 动效
   ============================================================= */

/* ---------- 1. Design Tokens ---------- */
:root{
  /* 底色 */
  --paper:#ffffff;
  --paper-soft:#f7f9fc;
  --paper-tint:#eef3fb;
  --ink:#0a0f1c;
  --ink-2:#1c2537;

  /* 文字层级 */
  --t1:#0a0f1c;
  --t2:#46536b;
  --t3:#7b879c;
  --t4:#a8b2c3;

  /* 品牌色 */
  --blue:#1652ff;
  --blue-deep:#0b2fb8;
  --blue-bright:#3d7bff;
  --cyan:#00c2ff;
  --sky:#7fd0ff;

  /* 渐变 */
  --grad-brand:linear-gradient(120deg,#0b2fb8 0%,#1652ff 45%,#00c2ff 100%);
  --grad-brand-soft:linear-gradient(120deg,rgba(22,82,255,.12),rgba(0,194,255,.12));
  --grad-ink:linear-gradient(140deg,#0a0f1c 0%,#132a5e 55%,#1652ff 100%);
  --grad-text:linear-gradient(100deg,#0b2fb8 0%,#1652ff 40%,#00c2ff 100%);
  --grad-line:linear-gradient(90deg,transparent,rgba(22,82,255,.55),transparent);

  /* 边框 / 阴影 */
  --line:rgba(10,15,28,.08);
  --line-2:rgba(10,15,28,.14);
  --line-blue:rgba(22,82,255,.22);
  --shadow-xs:0 1px 2px rgba(10,15,28,.05);
  --shadow-sm:0 4px 16px rgba(16,32,80,.06);
  --shadow-md:0 14px 40px rgba(16,32,80,.09);
  --shadow-lg:0 28px 70px rgba(16,32,80,.14);
  --shadow-blue:0 18px 46px rgba(22,82,255,.22);

  /* 字体 */
  --sans:"Inter","Helvetica Neue","Segoe UI Variable Display","Segoe UI",system-ui,-apple-system,sans-serif;
  --sans-zh:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei UI","Microsoft YaHei",sans-serif;
  --mono:"JetBrains Mono","IBM Plex Mono","SF Mono","Cascadia Code",Consolas,ui-monospace,monospace;

  /* 版式节奏 */
  --maxw:1240px;
  --gutter:clamp(20px,4.4vw,52px);
  --sec-y:clamp(76px,10vh,148px);
  --radius:16px;
  --radius-lg:26px;

  /* 动效 */
  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-inout:cubic-bezier(.65,0,.35,1);
  --ease-spring:cubic-bezier(.34,1.4,.42,1);
}

*,*::before,*::after{box-sizing:border-box}
html{margin:0;padding:0;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;
  font-family:var(--sans),var(--sans-zh);
  font-size:16px;
  line-height:1.75;
  color:var(--t1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
  font-feature-settings:"ss01","cv11","tnum";
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
::selection{background:rgba(22,82,255,.16)}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--paper-soft)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#8fabff,#1652ff);border-radius:99px;border:2px solid var(--paper-soft)}

/* ---------- 2. 布局原语 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.wrap-wide{max-width:1480px}
.sec{position:relative;padding-block:var(--sec-y)}
.sec-tight{padding-block:clamp(48px,6vh,88px)}
.sec-soft{background:var(--paper-soft)}
.sec-ink{background:var(--ink);color:#fff}
.sec-ink .t2,.sec-ink p{color:rgba(255,255,255,.7)}

.grid{display:grid;gap:clamp(16px,2vw,26px)}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.g5{grid-template-columns:repeat(5,minmax(0,1fr))}
.g-auto{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.flex{display:flex;gap:16px;align-items:center}
.between{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.center{text-align:center}
.mt-s{margin-top:12px}.mt-m{margin-top:24px}.mt-l{margin-top:44px}
@media (max-width:980px){.g3,.g4,.g5{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4,.g5,.g-auto{grid-template-columns:1fr}}

/* ---------- 3. 排版 ---------- */
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.022em;line-height:1.14}
.h1{font-size:clamp(34px,5.4vw,68px);font-weight:600}
.h2{font-size:clamp(28px,3.5vw,46px);font-weight:600}
.h3{font-size:clamp(20px,1.9vw,27px);font-weight:600}
.h4{font-size:clamp(17px,1.3vw,20px);font-weight:600;letter-spacing:-.01em}
.lead{font-size:clamp(16px,1.25vw,19px);line-height:1.8;color:var(--t2);max-width:64ch}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
.muted{color:var(--t2)}
.dim{color:var(--t3)}
.small{font-size:14px;line-height:1.7}
.grad-text{background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent}
.num{font-family:var(--sans);font-weight:700;letter-spacing:-.04em;font-feature-settings:"tnum";line-height:1}

/* kicker / label */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;font-weight:500;
  letter-spacing:.26em;text-transform:uppercase;color:var(--blue);
}
.kicker::before{content:"";width:26px;height:1px;background:currentColor;opacity:.65}
.kicker.plain::before{display:none}
.kicker.on-ink{color:var(--sky)}

.eyebrow{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--t3);
}

/* ---------- 4. 顶部导航 ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;z-index:900;
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  background:rgba(255,255,255,.72);
  border-bottom:1px solid transparent;
  transition:background .4s var(--ease-out),border-color .4s var(--ease-out),box-shadow .4s var(--ease-out);
}
.nav.scrolled{background:rgba(255,255,255,.86);border-bottom-color:var(--line);box-shadow:0 6px 30px rgba(16,32,80,.06)}
.nav-inner{
  height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px;
  max-width:1480px;margin-inline:auto;padding-inline:var(--gutter);
}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:-.02em;font-size:18px}
/* 真实 logo 图：本身带透明与色彩，不再叠渐变底和旋转高光 */
.brand .mark{
  width:46px;height:46px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
}
.brand .mark img{width:100%;height:100%;object-fit:contain;display:block}
.brand small{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.2em;color:var(--t3);font-weight:500;line-height:1.2;margin-top:2px}
.brand-txt{display:flex;flex-direction:column}

.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;padding:9px 14px;border-radius:99px;
  font-size:14.5px;font-weight:500;color:var(--t2);
  transition:color .25s var(--ease-out),background .25s var(--ease-out);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .35s var(--ease-out);
}
.nav-links a:hover{color:var(--t1);background:rgba(22,82,255,.06)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--blue);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-cta{display:flex;align-items:center;gap:10px}

.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line-2);background:#fff;
  border-radius:12px;position:relative;cursor:pointer;flex:0 0 auto;
}
.burger i{position:absolute;left:12px;right:12px;height:1.8px;background:var(--ink);border-radius:2px;transition:.35s var(--ease-out)}
.burger i:nth-child(1){top:15px}
.burger i:nth-child(2){top:21px}
.burger i:nth-child(3){top:27px}
body.menu-open .burger i:nth-child(1){top:21px;transform:rotate(45deg)}
body.menu-open .burger i:nth-child(2){opacity:0;transform:scaleX(.3)}
body.menu-open .burger i:nth-child(3){top:21px;transform:rotate(-45deg)}

@media (max-width:1080px){
  .nav-links{
    position:fixed;inset:74px 0 auto 0;flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(255,255,255,.98);backdrop-filter:blur(20px);
    padding:18px var(--gutter) 30px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);
    clip-path:inset(0 0 100% 0);opacity:0;pointer-events:none;
    transition:clip-path .5s var(--ease-out),opacity .35s var(--ease-out);
  }
  .nav-links a{padding:14px 16px;font-size:16px;border-radius:12px}
  .nav-links a::after{display:none}
  body.menu-open .nav-links{clip-path:inset(0 0 0 0);opacity:1;pointer-events:auto}
  .burger{display:block}
  .nav-cta .btn{display:none}
}

/* ---------- 5. 按钮 ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:99px;border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:-.01em;cursor:pointer;
  overflow:hidden;isolation:isolate;white-space:nowrap;
  transition:transform .3s var(--ease-spring),box-shadow .35s var(--ease-out),color .3s,border-color .3s;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.985)}
.btn-primary{background:var(--grad-brand);background-size:200% 100%;color:#fff;box-shadow:var(--shadow-blue)}
.btn-primary:hover{background-position:100% 0;box-shadow:0 22px 54px rgba(22,82,255,.34)}
.btn-primary::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,transparent 20%,rgba(255,255,255,.42) 50%,transparent 80%);
  transform:translateX(-120%);transition:transform .8s var(--ease-out);
}
.btn-primary:hover::after{transform:translateX(120%)}
.btn-ghost{background:#fff;border-color:var(--line-2);color:var(--t1)}
.btn-ghost:hover{border-color:var(--line-blue);color:var(--blue);box-shadow:var(--shadow-sm)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{box-shadow:0 20px 44px rgba(10,15,28,.28)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-lg{padding:16px 32px;font-size:16px}
.btn .arw{transition:transform .35s var(--ease-out)}
.btn:hover .arw{transform:translateX(4px)}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}

.linkarw{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--blue);font-size:15px;
}
.linkarw svg{transition:transform .35s var(--ease-out)}
.linkarw:hover svg{transform:translateX(5px)}

/* ---------- 6. 背景特效层 ---------- */
.bg-grid{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(10,15,28,.055) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(10,15,28,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,#000 20%,transparent 78%);
  animation:gridDrift 34s linear infinite;
}
.bg-dots{
  position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(rgba(22,82,255,.22) 1px,transparent 1px);
  background-size:26px 26px;
  mask-image:radial-gradient(ellipse 70% 60% at 70% 30%,#000,transparent 72%);
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 70% 30%,#000,transparent 72%);
}
.orb{
  position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;z-index:0;pointer-events:none;
  will-change:transform;
}
.orb-a{width:46vw;height:46vw;background:radial-gradient(circle at 30% 30%,rgba(0,194,255,.75),transparent 68%);top:-16vw;right:-10vw;animation:float1 22s var(--ease-inout) infinite}
.orb-b{width:38vw;height:38vw;background:radial-gradient(circle at 60% 40%,rgba(22,82,255,.62),transparent 68%);bottom:-14vw;left:-12vw;animation:float2 26s var(--ease-inout) infinite}
.orb-c{width:24vw;height:24vw;background:radial-gradient(circle at 50% 50%,rgba(127,208,255,.7),transparent 70%);top:36%;left:44%;animation:float3 19s var(--ease-inout) infinite}

.aurora{
  position:absolute;inset:-20% -10%;z-index:0;pointer-events:none;opacity:.5;
  background:
    radial-gradient(38% 42% at 22% 26%,rgba(22,82,255,.34),transparent 62%),
    radial-gradient(34% 40% at 78% 20%,rgba(0,194,255,.32),transparent 64%),
    radial-gradient(42% 46% at 54% 84%,rgba(127,208,255,.3),transparent 66%);
  filter:blur(30px);
  animation:auroraShift 18s var(--ease-inout) infinite alternate;
}

.scanline{
  position:absolute;left:0;right:0;height:180px;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(0,194,255,.14),transparent);
  animation:scanDown 9s linear infinite;
}

@keyframes gridDrift{from{background-position:0 0}to{background-position:64px 64px}}
@keyframes float1{0%,100%{transform:translate3d(0,0,0) scale(1)}50%{transform:translate3d(-4vw,5vh,0) scale(1.12)}}
@keyframes float2{0%,100%{transform:translate3d(0,0,0) scale(1.05)}50%{transform:translate3d(5vw,-6vh,0) scale(.94)}}
@keyframes float3{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(-3vw,-4vh,0) scale(1.15)}}
@keyframes auroraShift{0%{transform:translate3d(0,0,0) rotate(0)}50%{transform:translate3d(2%,-2%,0) rotate(6deg)}100%{transform:translate3d(-2%,2%,0) rotate(-5deg)}}
@keyframes scanDown{0%{top:-10%;opacity:0}12%{opacity:1}88%{opacity:1}100%{top:105%;opacity:0}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pulseRing{0%{transform:scale(.7);opacity:.85}100%{transform:scale(2.1);opacity:0}}
@keyframes dashMove{to{stroke-dashoffset:-600}}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
@keyframes blink{0%,45%{opacity:1}50%,95%{opacity:.15}100%{opacity:1}}

/* ---------- 7. 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;isolation:isolate;
  padding-top:clamp(140px,18vh,210px);padding-bottom:clamp(70px,9vh,120px);
  background:
    radial-gradient(120% 90% at 82% 6%,rgba(0,194,255,.16),transparent 58%),
    radial-gradient(90% 80% at 6% 96%,rgba(22,82,255,.14),transparent 60%),
    linear-gradient(180deg,#fff 0%,var(--paper-soft) 100%);
}
.hero-grid-cols{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(28px,4vw,64px);align-items:center;position:relative;z-index:2}
@media (max-width:1080px){.hero-grid-cols{grid-template-columns:1fr}}
.hero h1{margin-top:22px}
.hero .lead{margin-top:24px}
.hero .btn-row{margin-top:36px}

.hero-badge{
  display:inline-flex;align-items:center;gap:10px;padding:8px 16px 8px 10px;border-radius:99px;
  background:rgba(255,255,255,.8);border:1px solid var(--line-blue);
  font-size:13px;font-weight:500;color:var(--blue-deep);
  box-shadow:var(--shadow-sm);backdrop-filter:blur(8px);
}
.hero-badge .dot{
  position:relative;width:8px;height:8px;border-radius:50%;background:var(--blue);flex:0 0 auto;
}
.hero-badge .dot::after{
  content:"";position:absolute;inset:0;border-radius:50%;background:var(--blue);
  animation:pulseRing 2.2s var(--ease-out) infinite;
}
.hero-badge b{font-weight:700}

.hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:46px;padding-top:30px;border-top:1px solid var(--line)}
.hero-stats .n{font-size:clamp(26px,3vw,40px);font-weight:700;letter-spacing:-.04em;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent;font-feature-settings:"tnum"}
.hero-stats .l{font-size:13.5px;color:var(--t3);margin-top:4px;line-height:1.5}
@media (max-width:560px){.hero-stats{grid-template-columns:1fr 1fr}}

/* 首屏可视化面板 */
.viz{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(150deg,#0a0f1c,#12244f 60%,#0b2fb8);
  box-shadow:var(--shadow-lg),0 0 0 1px rgba(255,255,255,.08) inset;
  aspect-ratio:4/3.9;isolation:isolate;
  animation:floatY 7s var(--ease-inout) infinite;
}
.viz::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:
    linear-gradient(to right,rgba(127,208,255,.14) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(127,208,255,.14) 1px,transparent 1px);
  background-size:42px 42px;
  mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,#000,transparent 85%);
  -webkit-mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,#000,transparent 85%);
}
.viz::after{
  content:"";position:absolute;left:0;right:0;height:160px;z-index:2;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(0,194,255,.35),transparent);
  animation:scanDown 7s linear infinite;
}
.viz-head{
  position:relative;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 20px;border-bottom:1px solid rgba(255,255,255,.1);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.62);
}
.viz-head .dots3{display:flex;gap:6px}
.viz-head .dots3 i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.28);display:block}
.viz-head .dots3 i:first-child{background:#ff6b6b}
.viz-head .dots3 i:nth-child(2){background:#ffd166}
.viz-head .dots3 i:last-child{background:#4ade80}
.viz-body{position:relative;z-index:3;padding:20px}

.viz-frame{
  position:relative;border-radius:12px;overflow:hidden;background:#05070f;
  border:1px solid rgba(127,208,255,.22);aspect-ratio:16/10;
}
.viz-frame img{width:100%;height:100%;object-fit:cover;opacity:.94}
.viz-frame .crosshair{
  position:absolute;width:34px;height:34px;border:1.5px solid var(--cyan);border-radius:50%;
  box-shadow:0 0 0 3px rgba(0,194,255,.18),0 0 20px rgba(0,194,255,.6);
  animation:blink 2.6s var(--ease-inout) infinite;
}
.viz-frame .crosshair::before,.viz-frame .crosshair::after{
  content:"";position:absolute;background:var(--cyan);
}
.viz-frame .crosshair::before{left:50%;top:-8px;bottom:-8px;width:1px;transform:translateX(-50%)}
.viz-frame .crosshair::after{top:50%;left:-8px;right:-8px;height:1px;transform:translateY(-50%)}
.viz-frame .tagbox{
  position:absolute;left:9%;top:22%;padding:3px 9px;border-radius:4px;
  background:rgba(0,194,255,.92);color:#04121f;font-family:var(--mono);font-size:10.5px;
  font-weight:600;letter-spacing:.06em;
}

.viz-rows{margin-top:16px;display:grid;gap:9px}
.viz-row{
  display:flex;align-items:center;gap:12px;padding:10px 13px;border-radius:10px;
  background:rgba(255,255,255,.045);border:1px solid rgba(127,208,255,.14);
  font-size:12.5px;color:rgba(255,255,255,.8);
}
.viz-row .k{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--sky);text-transform:uppercase;min-width:74px}
.viz-row .bar{flex:1;height:6px;border-radius:99px;background:rgba(255,255,255,.12);overflow:hidden}
.viz-row .bar i{
  display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--blue-bright),var(--cyan));
  width:0;animation:barGrow 2.4s var(--ease-out) forwards;
  box-shadow:0 0 12px rgba(0,194,255,.7);
}
.viz-row .v{font-family:var(--mono);font-size:11.5px;color:#fff;min-width:48px;text-align:right}
@keyframes barGrow{to{width:var(--w,80%)}}

.viz-foot{
  position:relative;z-index:3;display:flex;justify-content:space-between;gap:12px;
  padding:14px 20px;border-top:1px solid rgba(255,255,255,.1);
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.5);
}

/* ---------- 8. 卡片 ---------- */
.card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(22px,2.2vw,30px);overflow:hidden;isolation:isolate;
  transition:transform .45s var(--ease-out),box-shadow .45s var(--ease-out),border-color .45s var(--ease-out);
}
.card::before{
  content:"";position:absolute;inset:0;z-index:-1;opacity:0;
  background:radial-gradient(420px 220px at var(--mx,50%) var(--my,0%),rgba(22,82,255,.1),transparent 70%);
  transition:opacity .45s var(--ease-out);
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--line-blue)}
.card:hover::before{opacity:1}
.card .ico{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--grad-brand-soft);border:1px solid var(--line-blue);color:var(--blue);
  transition:transform .5s var(--ease-spring),background .4s;
}
.card:hover .ico{transform:translateY(-3px) rotate(-4deg)}
.card h3{margin-bottom:10px}
.card p{color:var(--t2);font-size:15px}

.card-ink{background:var(--grad-ink);border-color:transparent;color:#fff}
.card-ink p,.card-ink .muted{color:rgba(255,255,255,.76)}
.card-ink::before{background:radial-gradient(420px 220px at var(--mx,50%) var(--my,0%),rgba(0,194,255,.3),transparent 70%)}
.card-ink .ico{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:#fff}

.card-grad{
  background:linear-gradient(150deg,rgba(22,82,255,.06),rgba(0,194,255,.06));
  border-color:var(--line-blue);
}
.card-flat{background:var(--paper-soft);border-color:transparent}
.card-flat:hover{background:#fff}

/* 数字卡 */
.statcard{
  position:relative;padding:26px 24px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);overflow:hidden;
  transition:transform .45s var(--ease-out),box-shadow .45s var(--ease-out);
}
.statcard::after{
  content:"";position:absolute;left:0;top:0;height:3px;width:100%;
  background:var(--grad-brand);transform:scaleX(0);transform-origin:left;
  transition:transform .6s var(--ease-out);
}
.statcard:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.statcard:hover::after{transform:scaleX(1)}
.statcard .n{font-size:clamp(28px,3.4vw,44px);font-weight:700;letter-spacing:-.045em;color:var(--ink);font-feature-settings:"tnum"}
.statcard .n .u{font-size:.44em;font-weight:600;color:var(--blue);margin-left:4px;letter-spacing:0}
.statcard .l{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--t3);margin-bottom:10px}
.statcard .d{font-size:14px;color:var(--t2);margin-top:8px;line-height:1.6}

/* 特性列表 */
.feat{display:grid;gap:14px}
.feat-item{display:flex;gap:14px;align-items:flex-start}
.feat-item .tick{
  width:26px;height:26px;border-radius:8px;flex:0 0 auto;display:grid;place-items:center;
  background:var(--grad-brand);color:#fff;margin-top:2px;
  box-shadow:0 6px 16px rgba(22,82,255,.28);
}
.feat-item .tick svg{width:14px;height:14px}
.feat-item .tx{font-size:15px;color:var(--t2);line-height:1.7}
.feat-item .tx b{color:var(--t1);font-weight:600}

/* 标签 */
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{
  display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:99px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--t2);
  transition:.3s var(--ease-out);
}
.chip:hover{border-color:var(--line-blue);color:var(--blue);transform:translateY(-2px)}
.chip.solid{background:var(--grad-brand);color:#fff;border-color:transparent}
.chip.blue{background:rgba(22,82,255,.08);border-color:var(--line-blue);color:var(--blue-deep)}
.chip .n{font-family:var(--mono);font-size:11px;opacity:.7}
.tech-tag{
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  padding:5px 11px;border-radius:6px;background:rgba(10,15,28,.05);color:var(--t2);
}

/* ---------- 9. 案例网格 ---------- */
.filters{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:28px}
.filter{
  padding:9px 17px;border-radius:99px;border:1px solid var(--line);background:#fff;
  font-size:14px;color:var(--t2);cursor:pointer;transition:.3s var(--ease-out);
  display:inline-flex;align-items:center;gap:8px;
}
.filter .c{font-family:var(--mono);font-size:11px;color:var(--t3)}
.filter:hover{border-color:var(--line-blue);color:var(--blue)}
.filter.on{background:var(--ink);border-color:var(--ink);color:#fff}
.filter.on .c{color:rgba(255,255,255,.6)}

.case-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));gap:20px}
.case-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;cursor:pointer;text-align:left;padding:0;
  transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out),border-color .4s;
  display:flex;flex-direction:column;
}
.case-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-lg);border-color:var(--line-blue)}
.case-thumb{position:relative;aspect-ratio:16/10.5;overflow:hidden;background:#0d1220}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease-out),filter .5s}
.case-card:hover .case-thumb img{transform:scale(1.07)}
.case-thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(5,10,25,.72));
  opacity:.85;
}
.case-badge{
  position:absolute;left:12px;top:12px;z-index:2;padding:5px 11px;border-radius:99px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  font-size:11.5px;font-weight:600;color:var(--blue-deep);letter-spacing:.02em;
}
.case-scan{
  position:absolute;left:0;right:0;height:70px;z-index:2;pointer-events:none;opacity:0;
  background:linear-gradient(180deg,transparent,rgba(0,194,255,.6),transparent);
  transition:opacity .4s;
}
.case-card:hover .case-scan{opacity:1;animation:scanDown 2.6s linear infinite}
.case-thumb .cap{
  position:absolute;left:14px;right:14px;bottom:12px;z-index:2;color:#fff;
  font-size:15px;font-weight:600;letter-spacing:-.01em;line-height:1.35;
}
.case-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.case-body .det{font-size:14px;color:var(--t2);line-height:1.65}
.case-body .kv{display:grid;gap:8px;margin-top:auto}
.case-body .kv div{display:flex;gap:10px;font-size:13.5px;line-height:1.6}
.case-body .kv b{
  flex:0 0 auto;font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--blue);padding-top:3px;min-width:44px;
}
.case-body .kv span{color:var(--t2)}
.case-more{
  margin-top:14px;display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;color:var(--blue);
  opacity:0;transform:translateY(6px);transition:.4s var(--ease-out);
}
.case-card:hover .case-more{opacity:1;transform:translateY(0)}

/* ---------- 10. 模态 ---------- */
.modal{
  position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:clamp(12px,3vw,40px);
  background:rgba(8,12,24,.62);backdrop-filter:blur(10px);
  opacity:0;pointer-events:none;transition:opacity .35s var(--ease-out);
}
.modal.open{opacity:1;pointer-events:auto}
.modal-box{
  position:relative;width:min(1000px,100%);max-height:88vh;overflow:auto;
  background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);
  transform:translateY(22px) scale(.97);transition:transform .45s var(--ease-spring);
}
.modal.open .modal-box{transform:none}
.modal-close{
  position:absolute;right:14px;top:14px;z-index:5;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:rgba(255,255,255,.92);cursor:pointer;
  display:grid;place-items:center;transition:.3s var(--ease-out);
}
.modal-close:hover{background:var(--ink);color:#fff;transform:rotate(90deg)}
.modal-media{position:relative;background:#0d1220;aspect-ratio:16/9;overflow:hidden}
.modal-media img{width:100%;height:100%;object-fit:contain}
.modal-media::after{
  content:"";position:absolute;left:0;right:0;height:120px;
  background:linear-gradient(180deg,transparent,rgba(0,194,255,.35),transparent);
  animation:scanDown 5s linear infinite;
}
.modal-body{padding:clamp(22px,3vw,38px)}
.modal-body h3{font-size:clamp(22px,2.4vw,32px);margin-bottom:14px}
.modal-blocks{display:grid;gap:18px;margin-top:22px}
.modal-blocks .mb{display:grid;grid-template-columns:96px minmax(0,1fr);gap:18px;padding-top:18px;border-top:1px solid var(--line)}
.modal-blocks .mb b{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);padding-top:4px;
}
.modal-blocks .mb p{color:var(--t2);font-size:15px}
@media (max-width:600px){.modal-blocks .mb{grid-template-columns:1fr;gap:6px}}

/* 灯箱 */
.lightbox{
  position:fixed;inset:0;z-index:1100;display:grid;place-items:center;padding:24px;
  background:rgba(5,8,18,.92);backdrop-filter:blur(6px);
  opacity:0;pointer-events:none;transition:opacity .3s;
}
.lightbox.open{opacity:1;pointer-events:auto}
.lightbox img{max-width:94vw;max-height:88vh;border-radius:10px;box-shadow:0 30px 90px rgba(0,0,0,.6)}
.lightbox .cap{position:absolute;bottom:24px;color:rgba(255,255,255,.72);font-size:14px}

/* ---------- 11. 分栏 / 图文 ---------- */
.split{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,4vw,72px);align-items:center}
.split.tilt{grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr)}
.split.rev>.split-txt{order:2}
@media (max-width:980px){.split,.split.tilt{grid-template-columns:1fr}.split.rev>.split-txt{order:0}}

.imgcard{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--paper-tint);
  border:1px solid var(--line);box-shadow:var(--shadow-md);
}
.imgcard img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease-out)}
.imgcard:hover img{transform:scale(1.04)}
.imgcard .ribbon{
  position:absolute;left:16px;bottom:16px;z-index:2;padding:9px 15px;border-radius:10px;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  font-size:13px;font-weight:600;color:var(--ink);box-shadow:var(--shadow-sm);
}
.imgcard.ratio-16x10{aspect-ratio:16/10}
.imgcard.ratio-4x3{aspect-ratio:4/3}
.imgcard.ratio-1x1{aspect-ratio:1/1}
.imgcard.fit-contain{background:#f2f5fa}
.imgcard.fit-contain img{object-fit:contain}

.img-duo{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:560px){.img-duo{grid-template-columns:1fr}}

/* 对比滑块 */
.compare{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/10;
  border:1px solid var(--line);box-shadow:var(--shadow-md);background:#eef3fb;
  cursor:ew-resize;user-select:none;touch-action:none;
}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#eef3fb}
/* before 图层压在上层，从左侧裁切；after 作为底图始终完整 */
.compare .before{z-index:2;clip-path:inset(0 calc(100% - var(--split,50%)) 0 0)}
.compare .after{z-index:1}
.compare .handle{
  position:absolute;top:0;bottom:0;left:var(--split,50%);width:2px;z-index:3;
  background:linear-gradient(180deg,transparent,#fff,transparent);box-shadow:0 0 24px rgba(0,194,255,.9);
}
.compare .handle::after{
  content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.95);
  box-shadow:0 8px 26px rgba(10,15,28,.3);
  background-image:linear-gradient(90deg,transparent 40%,var(--blue) 40%,var(--blue) 44%,transparent 44%,transparent 56%,var(--blue) 56%,var(--blue) 60%,transparent 60%);
}
.compare .lbl{
  position:absolute;top:14px;z-index:4;padding:6px 12px;border-radius:99px;font-size:12px;font-weight:600;
  background:rgba(255,255,255,.9);color:var(--ink);backdrop-filter:blur(6px);
}
.compare .lbl.l{left:14px}
.compare .lbl.r{right:14px;background:var(--grad-brand);color:#fff}

/* ---------- 12. 流程 / 时间轴 ---------- */
.steps{display:grid;gap:0;position:relative}
.step{
  display:grid;grid-template-columns:64px minmax(0,1fr) minmax(0,1.3fr);gap:clamp(14px,2.4vw,32px);
  padding:clamp(20px,2.4vw,30px) 0;border-top:1px solid var(--line);align-items:start;
  position:relative;transition:background .4s var(--ease-out);
}
.step:last-child{border-bottom:1px solid var(--line)}
.step:hover{background:linear-gradient(90deg,rgba(22,82,255,.05),transparent 70%)}
.step .idx{
  font-family:var(--mono);font-size:13px;letter-spacing:.14em;color:var(--blue);font-weight:600;padding-top:4px;
}
.step h4{margin-bottom:6px}
.step .txt{color:var(--t2);font-size:15px}
@media (max-width:760px){.step{grid-template-columns:48px minmax(0,1fr)}.step .txt{grid-column:2}}

.rail{position:relative;padding-left:34px}
.rail::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:linear-gradient(180deg,var(--blue),var(--cyan),transparent);
}
.rail-item{position:relative;padding-bottom:34px}
.rail-item:last-child{padding-bottom:0}
.rail-item::before{
  content:"";position:absolute;left:-30px;top:7px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:2.5px solid var(--blue);box-shadow:0 0 0 4px rgba(22,82,255,.14);
}
.rail-item .yr{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--blue);font-weight:600}

/* ---------- 13. 架构图 ---------- */
.arch{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(160deg,#080d1a,#0f2050 55%,#0a1a3f);
  padding:clamp(26px,3.4vw,48px);color:#fff;box-shadow:var(--shadow-lg);
}
.arch::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(127,208,255,.1) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(127,208,255,.1) 1px,transparent 1px);
  background-size:38px 38px;
  mask-image:radial-gradient(ellipse 90% 90% at 50% 40%,#000,transparent 88%);
  -webkit-mask-image:radial-gradient(ellipse 90% 90% at 50% 40%,#000,transparent 88%);
}
.arch>*{position:relative;z-index:2}
.arch-layer{
  display:grid;grid-template-columns:120px minmax(0,1fr);gap:18px;align-items:center;
  padding:16px 18px;border-radius:14px;margin-bottom:12px;
  background:rgba(255,255,255,.05);border:1px solid rgba(127,208,255,.2);
  transition:background .4s var(--ease-out),transform .4s var(--ease-out),border-color .4s;
}
.arch-layer:hover{background:rgba(0,194,255,.12);border-color:rgba(0,194,255,.5);transform:translateX(6px)}
.arch-layer .lb{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--sky)}
.arch-layer .mods{display:flex;flex-wrap:wrap;gap:8px}
.arch-layer .mods span{
  padding:6px 12px;border-radius:8px;font-size:13px;background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.09);color:rgba(255,255,255,.86);
}
.arch-flow{
  height:26px;position:relative;margin:-4px 0 8px 58px;
}
.arch-flow::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(0,194,255,.7),rgba(0,194,255,.1));
}
.arch-flow::after{
  content:"";position:absolute;left:-4px;bottom:-1px;width:10px;height:10px;
  border-right:2px solid var(--cyan);border-bottom:2px solid var(--cyan);transform:rotate(45deg);
  animation:floatY 2.4s var(--ease-inout) infinite;
}
@media (max-width:640px){.arch-layer{grid-template-columns:1fr;gap:10px}}

/* ---------- 14. 团队 ---------- */
.person{
  display:flex;gap:16px;align-items:flex-start;padding:20px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);
  transition:transform .45s var(--ease-out),box-shadow .45s var(--ease-out),border-color .4s;
}
.person:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--line-blue)}
.person .ph{
  width:66px;height:66px;border-radius:14px;object-fit:cover;flex:0 0 auto;
  filter:grayscale(.15) contrast(1.04);border:1px solid var(--line);
  transition:filter .5s var(--ease-out),transform .5s var(--ease-spring);
}
.person:hover .ph{filter:none;transform:scale(1.05)}
.person .nm{font-weight:600;font-size:16.5px;letter-spacing:-.01em}
.person .ro{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-top:3px}
.person .ds{font-size:13.5px;color:var(--t2);line-height:1.65;margin-top:9px}

/* ---------- 15. 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:600px}
th,td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--t3);background:var(--paper-soft);font-weight:600;white-space:nowrap;
}
tbody tr{transition:background .3s}
tbody tr:hover{background:rgba(22,82,255,.035)}
tbody tr:last-child td{border-bottom:0}
td b{color:var(--t1)}
td{color:var(--t2)}

/* ---------- 16. CTA 横幅 ---------- */
.cta{
  position:relative;overflow:hidden;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,#0a0f1c 0%,#12244f 46%,#0b2fb8 100%);
  color:#fff;padding:clamp(36px,5vw,72px);isolation:isolate;
  box-shadow:var(--shadow-lg);
}
.cta::before{
  content:"";position:absolute;inset:-30% -10%;z-index:0;
  background:
    radial-gradient(30% 40% at 18% 24%,rgba(0,194,255,.5),transparent 62%),
    radial-gradient(28% 38% at 84% 76%,rgba(61,123,255,.5),transparent 64%);
  filter:blur(28px);animation:auroraShift 16s var(--ease-inout) infinite alternate;
}
.cta::after{
  content:"";position:absolute;inset:0;z-index:1;
  background-image:
    linear-gradient(to right,rgba(127,208,255,.09) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(127,208,255,.09) 1px,transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,#000,transparent 90%);
  -webkit-mask-image:radial-gradient(ellipse 80% 80% at 50% 50%,#000,transparent 90%);
}
.cta>*{position:relative;z-index:2}
.cta h2{color:#fff}
.cta p{color:rgba(255,255,255,.78)}
.cta .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.28);color:#fff;backdrop-filter:blur(8px)}
.cta .btn-ghost:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---------- 17. 表单 ---------- */
.form{display:grid;gap:16px}
.field{display:grid;gap:8px}
.field label{font-size:13px;font-weight:600;color:var(--t2);letter-spacing:.01em}
.field label .req{color:var(--blue)}
.field input,.field textarea,.field select{
  width:100%;padding:13px 16px;border-radius:12px;border:1px solid var(--line-2);
  background:#fff;font-size:15px;transition:.3s var(--ease-out);
  font-family:inherit;
}
.field textarea{min-height:126px;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(22,82,255,.12);
}
.field input::placeholder,.field textarea::placeholder{color:var(--t4)}
.form-note{font-size:12.5px;color:var(--t3)}
.form-status{
  margin-top:6px;padding:13px 16px;border-radius:12px;font-size:14px;display:none;
  background:rgba(22,82,255,.07);border:1px solid var(--line-blue);color:var(--blue-deep);
}
.form-status.show{display:block;animation:fadeUp .5s var(--ease-out)}

/* ---------- 18. 页脚 ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.7);padding:clamp(48px,6vw,80px) 0 30px;position:relative;overflow:hidden}
.footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad-line);
}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:0}
.footer a{color:rgba(255,255,255,.66);font-size:14px;display:block;padding:5px 0;transition:.3s var(--ease-out)}
.footer a:hover{color:#fff;transform:translateX(4px)}
.footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px}
@media (max-width:860px){.footer .cols{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer .cols{grid-template-columns:1fr}}
.footer .bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.45);
}
.footer .brand{color:#fff}
.footer .brand small{color:rgba(255,255,255,.45)}
.footer .contact-line{font-size:14px;padding:4px 0;display:flex;gap:10px;align-items:center}
.footer .contact-line b{color:#fff;font-weight:600}
/* 联系方式里的行内链接（邮箱）不套用页脚通用 <a> 样式 */
.footer .contact-line > a,
.coldfoot .cinfo .row > a{
  display:inline !important;padding:0 !important;margin:0 !important;
  font-size:inherit !important;color:inherit !important;font-weight:inherit !important;
  border-bottom:1px solid rgba(127,127,127,.45);
  transition:border-color .3s var(--ease-out),color .3s var(--ease-out);
}
.footer .contact-line > a:hover,
.coldfoot .cinfo .row > a:hover{color:#fff !important;transform:none !important;border-bottom-color:#fff}
/* ---------- 19. 滚动显现动画 ---------- */
[data-rv]{opacity:0;will-change:transform,opacity;transition:opacity .85s var(--ease-out),transform .85s var(--ease-out)}
[data-rv="up"]{transform:translateY(34px)}
[data-rv="down"]{transform:translateY(-26px)}
[data-rv="left"]{transform:translateX(-40px)}
[data-rv="right"]{transform:translateX(40px)}
[data-rv="scale"]{transform:scale(.94)}
[data-rv="blur"]{filter:blur(10px);transform:translateY(20px)}
[data-rv].in{opacity:1;transform:none;filter:none}

/* 首屏入场 */
[data-in]{opacity:0;transform:translateY(26px);animation:heroIn .95s var(--ease-out) forwards;animation-delay:var(--d,0s)}
@keyframes heroIn{to{opacity:1;transform:none}}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* 标题逐字 */
.split-char{display:inline-block;opacity:0;transform:translateY(.5em) rotate(4deg);animation:charIn .8s var(--ease-out) forwards;animation-delay:var(--d,0s)}
@keyframes charIn{to{opacity:1;transform:none}}

/* 滚动进度条 */
.progress{
  position:fixed;left:0;top:0;height:3px;width:100%;z-index:950;transform-origin:left;
  background:var(--grad-brand);transform:scaleX(0);
  box-shadow:0 0 14px rgba(22,82,255,.5);
}

/* 页头横幅（子页） */
.pagehead{
  position:relative;overflow:hidden;isolation:isolate;
  padding-top:clamp(126px,15vh,178px);padding-bottom:clamp(48px,6vh,76px);
  background:
    radial-gradient(100% 90% at 84% 0%,rgba(0,194,255,.15),transparent 58%),
    radial-gradient(80% 80% at 0% 100%,rgba(22,82,255,.13),transparent 60%),
    linear-gradient(180deg,#fff,var(--paper-soft));
  border-bottom:1px solid var(--line);
}
.pagehead .inner{position:relative;z-index:2}
.pagehead h1{margin-top:18px}
.pagehead .lead{margin-top:18px}
.crumb{display:flex;gap:9px;align-items:center;font-size:13px;color:var(--t3);margin-bottom:4px}
.crumb a:hover{color:var(--blue)}
.crumb span{opacity:.5}

/* 侧栏锚点 */
.anchor-nav{
  position:sticky;top:96px;display:grid;gap:3px;align-self:start;
}
.anchor-nav a{
  padding:10px 14px;border-radius:10px;font-size:14px;color:var(--t2);
  border-left:2px solid transparent;transition:.3s var(--ease-out);
}
.anchor-nav a:hover{background:rgba(22,82,255,.05);color:var(--blue)}
.anchor-nav a.on{border-left-color:var(--blue);color:var(--blue);font-weight:600;background:rgba(22,82,255,.06)}

/* 数轴 / 大数字行 */
.bignum-row{display:grid;gap:1px;background:var(--line);border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.bignum{background:#fff;padding:clamp(18px,1.9vw,26px);min-width:0;transition:background .4s}
.bignum:hover{background:var(--paper-soft)}
.bignum .v{display:block;font-size:clamp(20px,1.85vw,27px);font-weight:700;letter-spacing:-.035em;background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent;overflow-wrap:anywhere}
.bignum .k{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--t3);margin-top:8px;line-height:1.6}
.bignum .d{font-size:13px;color:var(--t2);margin-top:8px;line-height:1.6}

/* 通知条 */
.notice{
  display:flex;gap:12px;align-items:flex-start;padding:14px 18px;border-radius:12px;
  background:rgba(22,82,255,.06);border:1px solid var(--line-blue);font-size:13.5px;color:var(--blue-deep);
}
.notice svg{flex:0 0 auto;margin-top:3px}

/* 噪声纹理 */
.noise::after{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- 20. 无障碍 / 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  [data-rv],[data-in]{opacity:1!important;transform:none!important;filter:none!important}
}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}