/* pmaft.com · 站点样式 v3（3D 轻亮版，2026-10） */
:root{
  --bg:#f6fbff;
  --bg2:#eef8ff;
  --panel:#ffffff;
  --panel2:#f5fbff;
  --line:#e1eef7;
  --line2:#cfe4f2;
  --text:#0f2433;
  --muted:#5d7587;
  --brand:#00a1e9;
  --brand-dark:#007fb8;
  --accent:#19c3b1;
  --ok:#0e9f6e;
  --warn:#d97706;
  --bad:#e11d48;
  --radius:18px;
  --max:1120px;
  --head:68px;
  --shadow:0 20px 55px rgba(15,65,95,.10);
  --shadow-sm:0 8px 26px rgba(15,65,95,.07);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font:16px/1.7 "Inter","Helvetica Neue","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 500px at 10% -12%,rgba(0,161,233,.13),transparent 62%),
    radial-gradient(760px 460px at 92% 0%,rgba(25,195,177,.11),transparent 60%),
    linear-gradient(180deg,#fbfeff 0%,#f5fbff 58%,#f9fdff 100%);
  background-attachment:fixed;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{line-height:1.25;letter-spacing:-.015em;margin:0 0 .5em;color:var(--text)}
p{margin:0 0 1em}
::selection{background:rgba(0,161,233,.18)}
button{font:inherit}

/* ---------- 头部：不透明，贴近 Hero 顶部渐变 ---------- */
.site-head{
  position:sticky;top:0;z-index:40;width:100%;
  background:linear-gradient(180deg,#f9feff 0%,#eef9ff 100%);
  border-bottom:1px solid rgba(8,104,140,.08);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.72);
}
.site-head-inner{
  width:100%;max-width:var(--max);height:var(--head);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:0;min-width:0}
.brand-logo{height:36px;width:auto;max-width:230px;object-fit:contain;flex:0 0 auto}
.brand-text{display:block;line-height:1.05;color:var(--text)}
.brand-sub{display:block;font-size:9.5px;letter-spacing:.2em;color:var(--muted);font-weight:500;margin-top:4px}
.site-nav{display:flex;align-items:center;gap:25px;font-size:13.5px;color:var(--muted);letter-spacing:.03em}
.site-nav a{position:relative;padding:6px 0;transition:color .18s}
.site-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;border-radius:1px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s;
}
.site-nav a:hover{color:var(--brand-dark)}
.site-nav a:hover::after{transform:scaleX(1)}
.nav-divider{width:1px;height:14px;background:rgba(9,84,116,.14)}
/* 导航短标签：桌面用全称，≤560px 换成短称（默认隐藏短称） */
.site-nav .nav-short{display:none}
.nav-en{
  font-size:10.5px;letter-spacing:.14em;border:1px solid rgba(0,120,160,.18);
  border-radius:999px;padding:4px 10px!important;color:#3f6578;
}
.nav-en:hover{border-color:rgba(0,159,227,.42);color:var(--brand-dark)}

/* ---------- 主体 ---------- */
.site-main{flex:1;width:100%;max-width:var(--max);margin:0 auto;padding:0 24px 72px}
.page-home .site-main{max-width:none;padding:0}

/* ---------- 首页 Hero ---------- */
.hero{
  --mx:0;
  --my:0;
  position:relative;
  display:flex;align-items:center;
  min-height:clamp(560px,calc(66.6667vh - var(--head)),760px);
  background:
    radial-gradient(980px 560px at 73% 4%,rgba(0,174,255,.24),transparent 66%),
    radial-gradient(760px 520px at 8% 92%,rgba(23,195,174,.13),transparent 64%),
    linear-gradient(180deg,#f6fdff 0%,#e9f8ff 48%,#f8feff 100%);
  overflow:hidden;
  isolation:isolate;
}
.aurora{position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.aurora span{position:absolute;border-radius:50%;filter:blur(64px);opacity:.58;animation:aurora-drift 18s ease-in-out infinite alternate}
.aurora .a{width:540px;height:540px;right:5%;top:-18%;background:rgba(71,210,255,.46)}
.aurora .b{width:440px;height:440px;left:-8%;bottom:-22%;background:rgba(23,195,174,.26);animation-delay:-6s}
.aurora .c{width:330px;height:330px;right:38%;bottom:-24%;background:rgba(0,161,233,.18);animation-delay:-11s}
@keyframes aurora-drift{
  from{transform:translate3d(0,0,0) scale(1)}
  to{transform:translate3d(28px,-22px,0) scale(1.08)}
}
.noise{
  position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.035;mix-blend-mode:multiply;
  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='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
}
.depth-bg{
  position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none;
  perspective:1200px;
}
.depth-layer{position:absolute;inset:0;transform-style:preserve-3d;will-change:transform}
.depth-back{transform:translate3d(calc(var(--mx) * -38px),calc(var(--my) * -18px),0)}
.depth-mid{transform:translate3d(calc(var(--mx) * 16px),calc(var(--my) * 7px),0)}
.big-3d{
  position:absolute;right:-1.5vw;top:1%;
  width:min(50vw,720px);
  transform:rotate(-7deg);
  user-select:none;
  opacity:.95;
}
/* 用 SVG 描边而不是 -webkit-text-stroke：后者在大字号下会把字形右侧裁成直的 */
.big-3d svg{display:block;width:100%;height:auto;overflow:visible}
.big-3d text{
  font:900 420px/1 "Inter","Helvetica Neue",sans-serif;
  letter-spacing:-42px;fill:none;
  stroke:rgba(0,116,160,.16);stroke-width:1.5;stroke-linejoin:round;
}
.dot-field{
  position:absolute;right:-2%;top:-4%;width:64%;height:108%;
  background-image:radial-gradient(circle,rgba(0,126,170,.30) 1px,transparent 1.45px);
  background-size:20px 20px;
  -webkit-mask-image:radial-gradient(ellipse 68% 68% at 66% 48%,#000 8%,transparent 72%);
  mask-image:radial-gradient(ellipse 68% 68% at 66% 48%,#000 8%,transparent 72%);
  opacity:.58;
}
.orbit{
  position:absolute;right:4%;top:50%;width:min(620px,54vw);aspect-ratio:1;
  border:1px solid rgba(0,140,185,.16);border-radius:50%;
  transform:translateY(-50%) rotateX(68deg) rotateZ(-14deg);
}
.orbit.b{
  width:min(500px,44vw);right:7%;
  border-style:dashed;border-color:rgba(23,195,174,.22);
  transform:translateY(-50%) rotateX(70deg) rotateZ(18deg);
}
.orbit.c{
  width:min(330px,30vw);right:9%;
  border-color:rgba(0,140,185,.10);
  transform:translateY(-50%) rotateX(66deg) rotateZ(-24deg);
}
.mesh{
  position:absolute;right:0;bottom:-10%;width:58%;height:56%;
  background-image:
    linear-gradient(rgba(0,120,160,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,120,160,.055) 1px,transparent 1px);
  background-size:34px 34px;
  transform:perspective(420px) rotateX(64deg) rotateZ(-8deg);
  transform-origin:right bottom;
  -webkit-mask-image:linear-gradient(100deg,transparent 8%,#000 58%);
  mask-image:linear-gradient(100deg,transparent 8%,#000 58%);
  opacity:.9;
}
.hero-inner{
  position:relative;z-index:3;width:100%;max-width:var(--max);margin:0 auto;
  padding:clamp(42px,7vh,88px) 24px;
  display:grid;grid-template-columns:minmax(0,.93fr) minmax(0,1.07fr);
  gap:34px;align-items:center;
}
.hero-copy{position:relative;z-index:6;max-width:560px}
.eyebrow{
  display:flex;align-items:center;gap:10px;margin:0 0 22px;
  font-size:10px;font-weight:750;letter-spacing:.23em;color:var(--brand-dark);
  text-transform:uppercase;
}
.eyebrow .dot{
  width:7px;height:7px;border-radius:50%;background:var(--brand);flex:0 0 auto;
  box-shadow:0 0 0 5px rgba(0,159,227,.10);
  animation:pulse-dot 2.6s ease-in-out infinite;
}
@keyframes pulse-dot{
  0%,100%{box-shadow:0 0 0 4px rgba(0,159,227,.10)}
  50%{box-shadow:0 0 0 8px rgba(0,159,227,.03)}
}
.hero h1{
  margin:0 0 24px;
  font-size:clamp(46px,5.55vw,82px);
  line-height:1.03;letter-spacing:-.055em;font-weight:850;
}
.hero h1 .grad{
  position:relative;display:inline-block;
  background:linear-gradient(102deg,#0074a8 0%,#009fe3 46%,#17c3ae 100%);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.hero h1 .grad::after{
  content:"";position:absolute;left:1%;right:1%;bottom:-3px;height:9px;z-index:-1;
  border-radius:99px;
  background:linear-gradient(90deg,transparent,rgba(23,195,174,.30),transparent);
  filter:blur(3px);
}
.hero-lead{
  max-width:46ch;margin:0 0 30px;
  color:#4b6a7d;font-size:clamp(14.5px,1.18vw,17px);line-height:1.85;
}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:0 21px;border-radius:13px;
  font-size:14.5px;font-weight:650;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s,box-shadow .2s,background .2s,border-color .2s;
}
.btn:active{transform:translateY(1px)}
.btn .arrow{font-size:16px;line-height:1;transform:translateY(-.5px);transition:transform .2s}
.btn:hover .arrow{transform:translate(3px,-.5px)}
.btn-primary{
  color:#fff;
  background:linear-gradient(135deg,#00a4e9 0%,#0094cd 60%,#0088bd 100%);
  box-shadow:0 15px 32px rgba(0,132,182,.25),inset 0 1px 0 rgba(255,255,255,.24);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 19px 38px rgba(0,132,182,.30),inset 0 1px 0 rgba(255,255,255,.24)}
.btn-ghost{
  color:#1b465c;background:rgba(255,255,255,.58);
  border-color:rgba(0,120,160,.18);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.8);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{background:rgba(255,255,255,.86);border-color:rgba(0,159,227,.34);transform:translateY(-2px)}
.proof{
  display:flex;max-width:450px;margin:32px 0 0;padding:22px 0 0;list-style:none;
  border-top:1px solid rgba(9,84,116,.10);
}
.proof li{flex:1;min-width:0;padding-right:16px;border-right:1px solid rgba(9,84,116,.10)}
.proof li:last-child{padding-right:0;border-right:0}
.proof li + li{padding-left:18px}
.proof b{display:block;margin-bottom:2px;font-size:15px;font-weight:750;color:#16485f;letter-spacing:.02em}
.proof span{display:block;font-size:10.5px;letter-spacing:.08em;color:#6b8493}

/* 3D 标签卡 */
.label-wrap{
  position:relative;z-index:5;justify-self:center;
  width:min(100%,480px);aspect-ratio:1.22/1;
  display:grid;place-items:center;
  perspective:1100px;transform-style:preserve-3d;
}
.sec-card{
  position:relative;z-index:3;
  width:min(100%,424px);aspect-ratio:1.43/1;
  padding:26px 28px;
  border-radius:26px;
  background:
    radial-gradient(120% 150% at 8% 0%,rgba(255,255,255,.98),transparent 55%),
    linear-gradient(135deg,#f7ffff 0%,#e1f7ff 30%,#d3eeff 56%,#e6fffa 100%);
  border:1px solid rgba(255,255,255,1);
  box-shadow:
    0 0 0 1px rgba(0,120,160,.045),
    0 44px 90px rgba(0,82,120,.22),
    0 14px 30px rgba(0,82,120,.10),
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -24px 70px rgba(0,150,200,.07);
  transform:
    rotateY(calc(var(--mx) * 12.75deg))
    rotateX(calc(var(--my) * -10.5deg))
    translate3d(calc(var(--mx) * 30px),calc(var(--my) * 18px),0);
  transform-style:preserve-3d;
  will-change:transform;
  overflow:hidden;
}
.sec-card::before{
  content:"";position:absolute;inset:0;z-index:7;border-radius:inherit;padding:1px;
  background:linear-gradient(140deg,rgba(255,255,255,.98),rgba(255,255,255,0) 38%,rgba(23,195,174,.25) 78%,rgba(255,255,255,.5));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  pointer-events:none;
}
.card-head{position:relative;z-index:5;display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.card-brand{font-size:15px;font-weight:850;letter-spacing:.16em;color:#123f55;line-height:1.1}
.card-brand sup{font-size:8px;color:var(--brand);vertical-align:top;margin-left:1px}
.card-type{
  flex:0 0 auto;font-size:8px;font-weight:650;letter-spacing:.16em;color:#557586;
  border:1px solid rgba(0,120,160,.15);border-radius:999px;padding:5px 9px;
  background:rgba(255,255,255,.55);
}
.card-center{position:absolute;inset:0;z-index:3;display:grid;place-items:center;pointer-events:none}
.card-rings{
  position:absolute;width:63%;aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle at 34% 28%,rgba(255,255,255,.98),rgba(150,236,255,.30) 34%,rgba(0,160,220,.08) 62%,rgba(255,255,255,0) 72%);
  box-shadow:inset 0 0 44px rgba(255,255,255,.85);
}
.card-rings::before,.card-rings::after{content:"";position:absolute;border-radius:50%}
.card-rings::before{inset:8%;border:1px dashed rgba(0,120,160,.20)}
.card-rings::after{inset:21%;border:1px solid rgba(23,195,174,.18)}
.card-ghost{
  position:absolute;z-index:1;
  font-size:clamp(92px,9vw,130px);line-height:.86;font-weight:900;letter-spacing:-.085em;
  color:rgba(0,104,144,.16);
  filter:blur(1.2px);
  transform:translate3d(calc(-16px + var(--mx) * -32px),calc(var(--my) * -14px),-39px);
  user-select:none;
}
.card-3d{
  position:relative;z-index:2;
  font-size:clamp(92px,9vw,130px);line-height:.86;font-weight:900;letter-spacing:-.085em;
  /* 负字距会把盒子缩得比字形窄，background-clip:text 的渐变只画在盒子内，
     最后一个 D 的右缘就会被抹成直线；给左右留出内边距，让盒子盖住字形。 */
  padding:0 .15em;
  background:linear-gradient(145deg,#0076ae 0%,#00a7e0 34%,#17c3ae 62%,#075f86 100%);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 14px 18px rgba(0,130,175,.20));
  transform:translate3d(calc(10px + var(--mx) * 18px),calc(var(--my) * 7px),39px);
}
.card-3d::before{
  content:"3D";position:absolute;inset:0;z-index:-1;padding:inherit;
  color:rgba(0,95,130,.13);filter:blur(12px);transform:translate(11px,15px);
}
.card-tag{
  position:absolute;bottom:20%;left:50%;transform:translateX(-50%);
  font-size:9px;font-weight:650;letter-spacing:.34em;color:#4f788b;white-space:nowrap;
}
.card-foot{
  position:absolute;left:28px;right:28px;bottom:21px;z-index:5;
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  padding-top:13px;border-top:1px solid rgba(0,110,150,.12);
}
.card-code{
  font:700 16.5px/1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  letter-spacing:.23em;color:#0b4f6d;white-space:nowrap;
}
.card-note{max-width:11em;text-align:right;font-size:9px;line-height:1.55;letter-spacing:.06em;color:#62808f}
.card-lines{
  position:absolute;inset:0;z-index:6;pointer-events:none;opacity:.9;mix-blend-mode:soft-light;
  background:repeating-linear-gradient(90deg,
    rgba(255,255,255,.60) 0 1px,
    rgba(255,255,255,0) 1px 3px,
    rgba(0,100,140,.055) 3px 4px,
    rgba(255,255,255,0) 4px 6px);
  background-position:calc(var(--mx) * 22px) 0;
}
.card-glare{
  position:absolute;inset:-30%;z-index:6;pointer-events:none;opacity:.75;mix-blend-mode:soft-light;
  background:radial-gradient(circle at 50% 50%,rgba(255,255,255,.80),rgba(255,255,255,0) 39%);
  transform:translate3d(calc(var(--mx) * 44px),calc(var(--my) * 26px),0);
}
.float-chip,.sink-chip{
  position:absolute;z-index:8;
  display:flex;align-items:center;gap:9px;
  padding:10px 14px;border-radius:14px;
  color:#12516c;white-space:nowrap;
  background:rgba(255,255,255,.74);
  border:1px solid rgba(255,255,255,.92);
  box-shadow:0 15px 32px rgba(0,75,110,.14),inset 0 1px 0 rgba(255,255,255,.9);
  backdrop-filter:blur(10px);
}
.float-chip{
  left:-34px;top:13px;opacity:.92;
  transform:translate3d(calc(var(--mx) * 56px),calc(var(--my) * 32px),84px) rotate(-3.5deg);
}
.sink-chip{
  right:-26px;bottom:5px;z-index:1;opacity:.64;
  transform:translate3d(calc(var(--mx) * -40px),calc(var(--my) * -22px),-51px) rotate(3deg);
  filter:blur(.35px);
}
.chip-k{display:block;font-size:8px;font-weight:750;letter-spacing:.18em;color:#6a8797;line-height:1}
.chip-v{display:block;margin-top:4px;font-size:11.5px;font-weight:750;letter-spacing:.08em;color:#164d66;line-height:1}
.chip-arrow{
  display:grid;place-items:center;width:25px;height:25px;border-radius:9px;
  background:linear-gradient(145deg,rgba(0,159,227,.13),rgba(23,195,174,.10));
  color:#0089bd;font-size:13px;font-weight:700;
}
.sink-chip .chip-arrow{color:#139e8e;background:linear-gradient(145deg,rgba(23,195,174,.12),rgba(0,159,227,.07))}
.lens{
  position:absolute;inset:0;z-index:7;pointer-events:none;opacity:.58;mix-blend-mode:soft-light;
  background:repeating-linear-gradient(90deg,
    rgba(255,255,255,.42) 0 1px,
    rgba(255,255,255,0) 1px 3px,
    rgba(0,80,110,.045) 3px 4px,
    rgba(255,255,255,0) 4px 6px);
  -webkit-mask-image:linear-gradient(90deg,transparent 18%,#000 56%,#000 100%);
  mask-image:linear-gradient(90deg,transparent 18%,#000 56%,#000 100%);
}
.lens::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,transparent 30%,rgba(255,255,255,.36) 47%,transparent 63%);
  transform:translate3d(calc(var(--mx) * 13%),0,0);
  mix-blend-mode:soft-light;
}
.live-badge{
  position:absolute;right:max(24px,calc((100vw - var(--max)) / 2 + 24px));top:26px;z-index:8;
  display:flex;align-items:center;gap:8px;
  font-size:8.5px;font-weight:650;letter-spacing:.18em;color:#4d7183;
  background:rgba(255,255,255,.55);border:1px solid rgba(255,255,255,.8);
  border-radius:999px;padding:7px 11px;backdrop-filter:blur(8px);
}
.live-badge i{
  width:6px;height:6px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(23,195,174,.10);animation:pulse-dot 2.6s infinite;
}
.hero-hint{
  position:absolute;left:50%;bottom:19px;z-index:9;transform:translateX(-50%);
  display:flex;align-items:center;gap:10px;
  font-size:9.5px;font-weight:600;letter-spacing:.15em;color:#648293;
  text-transform:uppercase;white-space:nowrap;
}
.mouse{position:relative;width:15px;height:23px;border:1px solid rgba(0,110,150,.34);border-radius:9px;flex:0 0 auto}
.mouse::after{
  content:"";position:absolute;left:50%;top:5px;width:2px;height:5px;border-radius:2px;
  background:var(--brand);transform:translateX(-50%);animation:wheel 1.8s ease-in-out infinite;
}
@keyframes wheel{
  0%{opacity:0;transform:translate(-50%,0)}
  30%{opacity:1}
  70%{opacity:1}
  100%{opacity:0;transform:translate(-50%,6px)}
}

/* ---------- 首页通用区块 ---------- */
.home-section{
  position:relative;
  padding:clamp(64px,8vw,104px) 0;
  border-top:1px solid var(--line);
  overflow:hidden;
}
.section-inner{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}
.kicker{
  display:flex;align-items:center;gap:10px;margin:0 0 20px;
  font-size:9.5px;font-weight:750;letter-spacing:.24em;color:var(--brand-dark);text-transform:uppercase;
}
.kicker::before{content:"";width:26px;height:1px;background:var(--brand);opacity:.7}
.home-section h2{
  margin:0 0 26px;max-width:16em;
  font-size:clamp(30px,3.35vw,46px);line-height:1.18;letter-spacing:-.045em;font-weight:820;
}
.home-section h2 em{
  font-style:normal;
  background:linear-gradient(100deg,#0074a8,#17c3ae);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.home-section p{color:#4d6c7f}

/* 理念 + 技术 */
.intro{background:linear-gradient(180deg,#f8feff 0%,#ffffff 72%)}
.intro::before{
  content:"";position:absolute;right:-8%;top:-42%;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,161,233,.10),transparent 68%);
  pointer-events:none;
}
.intro-grid{
  position:relative;display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(28px,6vw,80px);
  align-items:start;padding-bottom:52px;border-bottom:1px solid rgba(9,84,116,.09);
}
.intro-head h2{max-width:12em}
.intro-body{font-size:15px;line-height:1.92}
.intro-body p{margin:0 0 16px}
.intro-body strong{color:#16485f;font-weight:700}
.intro-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.fact{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 16px;border-radius:999px;
  font-size:13px;letter-spacing:.05em;color:#557586;
  background:#f4fbff;border:1px solid rgba(0,120,160,.11);
}
.fact i{width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 auto}
.tech-head{
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,6vw,80px);
  align-items:end;margin:58px 0 26px;
}
.tech-head h2{margin-bottom:0}
.tech-lead{max-width:38ch;margin:0;font-size:14.5px;line-height:1.85;align-self:end}
.tech-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.tech-card{
  position:relative;padding:24px 22px 22px;border-radius:20px;
  background:rgba(255,255,255,.78);border:1px solid rgba(0,120,160,.12);
  box-shadow:0 12px 30px rgba(15,65,95,.045);
  overflow:hidden;
}
.tech-card::after{
  content:"";position:absolute;right:-26px;top:-26px;width:100px;height:100px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,161,233,.10),transparent 68%);
}
.tech-index{display:block;font:700 10px/1 ui-monospace,monospace;letter-spacing:.18em;color:var(--brand);margin-bottom:20px}
.tech-card h3{font-size:17px;margin-bottom:7px}
.tech-card p{margin:0;font-size:13px;line-height:1.75;color:#5c7686}

.tech-video-grid{
  display:grid;grid-template-columns:.86fr 1.14fr;gap:clamp(28px,5vw,64px);
  align-items:center;margin:58px 0;
}
.tech-video-copy h3{font-size:clamp(24px,2.5vw,32px);line-height:1.2;letter-spacing:-.035em;margin:0 0 14px}
.tech-video-copy p{font-size:14px;line-height:1.85;margin:0 0 20px}
.video-points{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0;padding:0}
.video-points li{
  font-size:12.5px;letter-spacing:.05em;color:#557586;padding:9px 14px;border-radius:999px;
  background:#f4fbff;border:1px solid rgba(0,120,160,.11);
}
.tech-video{
  position:relative;margin:0;border-radius:22px;overflow:hidden;
  background:#dfeffa;border:1px solid rgba(255,255,255,.9);
  box-shadow:0 24px 60px rgba(0,82,120,.15);
}
.tech-video video{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;background:#dceef7}
.tech-video figcaption{
  position:absolute;left:14px;bottom:12px;z-index:2;
  padding:6px 10px;border-radius:999px;background:rgba(7,45,65,.52);color:#fff;
  font-size:9.5px;letter-spacing:.08em;backdrop-filter:blur(8px);
}
.compare{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:14px}
.compare-col{
  position:relative;padding:28px 28px 24px;border-radius:22px;
  background:#fff;border:1px solid rgba(0,120,160,.12);box-shadow:0 14px 36px rgba(15,65,95,.05);
}
.compare-col.old{background:linear-gradient(145deg,#fafdff,#f4f9fc)}
.compare-col.new{
  background:
    radial-gradient(120% 120% at 90% 0%,rgba(23,195,174,.14),transparent 55%),
    linear-gradient(145deg,#f5ffff,#eefcff 52%,#f3fffb);
  border-color:rgba(0,161,233,.24);
  box-shadow:0 18px 44px rgba(0,132,182,.10);
}
.compare-label{font-size:10px;font-weight:750;letter-spacing:.2em;color:#6b8493;text-transform:uppercase;margin-bottom:12px}
.compare-col.new .compare-label{color:var(--brand-dark)}
.compare-col h3{font-size:19px;margin-bottom:18px}
.compare-col ul{list-style:none;margin:0;padding:0}
.compare-col li{
  display:flex;align-items:flex-start;gap:12px;padding:11px 0;
  border-top:1px solid rgba(9,84,116,.08);font-size:13.5px;color:#527082;
}
.compare-col li span{flex:0 0 42px;font-size:10px;letter-spacing:.12em;color:#8aa0ad;padding-top:2px}
.compare-col.old li::before{content:"—";color:#b8c7d0;font-weight:700}
.compare-col.new li::before{content:"✓";color:var(--accent);font-weight:800}
.compare-col.new li span{color:#6f8f9e}
.compare-vs{
  position:absolute;left:50%;top:50%;z-index:2;transform:translate(-50%,-50%);
  display:grid;place-items:center;width:48px;height:48px;border-radius:50%;
  background:#fff;border:1px solid rgba(0,120,160,.15);
  box-shadow:0 10px 26px rgba(15,65,95,.12);
  font:800 10px/1 ui-monospace,monospace;letter-spacing:.06em;color:var(--brand-dark);
}

/* ---------- 应用 ---------- */
.apps{background:linear-gradient(180deg,#fbfeff,#f4fbff 70%,#fbfeff)}
.section-top{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,6vw,80px);align-items:end;margin-bottom:34px}
.section-top h2{margin-bottom:0}
.section-desc{max-width:38ch;margin:0;font-size:14.5px;line-height:1.85;align-self:end}
.app-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.app-card{
  background:#fff;border:1px solid rgba(0,120,160,.12);border-radius:24px;overflow:hidden;
  box-shadow:0 14px 36px rgba(15,65,95,.055);
  transition:transform .25s,box-shadow .25s,border-color .25s;
}
.app-card:hover{transform:translateY(-4px);box-shadow:0 24px 54px rgba(15,65,95,.10);border-color:rgba(0,161,233,.22)}
.app-media{aspect-ratio:3/2;overflow:hidden;background:#e7f8ff}
.app-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.app-card:hover .app-media img{transform:scale(1.035)}
.app-body{padding:20px 22px 24px}
.app-tag{
  display:inline-block;margin-bottom:9px;font-size:9px;font-weight:750;letter-spacing:.15em;
  color:var(--brand-dark);text-transform:uppercase;
}
.app-body h3{font-size:19px;margin-bottom:7px}
.app-body p{margin:0;font-size:13.5px;line-height:1.8;color:#5c7686}
.app-note{margin:18px 0 0;font-size:10.5px;color:#8aa0ad;letter-spacing:.02em}

/* ---------- 防伪查询 ---------- */
.verify{background:linear-gradient(180deg,#f7fdff,#eefaff 58%,#f9feff)}
.verify-panel{
  display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);
  border:1px solid rgba(0,120,160,.14);border-radius:28px;overflow:hidden;
  background:#fff;box-shadow:0 24px 70px rgba(15,65,95,.10);
}
.verify-visual{
  position:relative;min-height:520px;padding:36px 28px 28px;
  display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(720px 420px at 72% 12%,rgba(0,174,255,.20),transparent 62%),
    radial-gradient(500px 360px at 12% 92%,rgba(23,195,174,.12),transparent 60%),
    linear-gradient(155deg,#f8feff,#e9f8ff 60%,#f4fffb);
  overflow:hidden;
}
.verify-visual::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle,rgba(0,126,170,.16) 1px,transparent 1.4px);
  background-size:22px 22px;
  -webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 50%,#000 10%,transparent 76%);
  mask-image:radial-gradient(ellipse 70% 70% at 50% 50%,#000 10%,transparent 76%);
}
.verify-art{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;max-width:600px}
.verify-art-3d{
  position:absolute;right:-6%;top:-12%;width:min(52vw,390px);
  transform:rotate(-8deg);user-select:none;pointer-events:none;
}
/* 同水印：-webkit-text-stroke 在大字号下会把字形右缘裁直，改用 SVG 描边 */
.verify-art-3d svg{display:block;width:100%;height:auto;overflow:visible}
.verify-art-3d text{
  font:900 320px/1 "Inter","Helvetica Neue",sans-serif;
  letter-spacing:-32px;fill:none;
  stroke:rgba(0,116,160,.13);stroke-width:1.6;stroke-linejoin:round;
}
.pack-stage{position:relative;width:min(430px,88%);perspective:1000px}
.pack-box{
  position:relative;width:100%;aspect-ratio:1.38/1;
  transform:rotate(-7deg) rotateY(-5deg);
  transform-style:preserve-3d;
}
.pack-front{
  position:absolute;inset:0;border-radius:24px;overflow:hidden;
  background:
    radial-gradient(140% 130% at 0% 0%,rgba(255,255,255,.98),transparent 58%),
    linear-gradient(135deg,#f6ffff 0%,#dff6ff 34%,#d1edff 62%,#e8fffa 100%);
  border:1px solid rgba(255,255,255,1);
  box-shadow:
    0 0 0 1px rgba(0,120,160,.05),
    0 40px 80px rgba(0,82,120,.22),
    0 12px 26px rgba(0,82,120,.10),
    inset 0 1px 0 rgba(255,255,255,1);
  padding:24px 26px;
}
.pack-head{position:relative;z-index:4;display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.pack-brand{font-size:15px;font-weight:850;letter-spacing:.16em;color:#123f55}
.pack-brand sup{font-size:8px;color:var(--brand);vertical-align:top}
.pack-type{font-size:8px;font-weight:650;letter-spacing:.16em;color:#557586;border:1px solid rgba(0,120,160,.15);border-radius:999px;padding:5px 9px;background:rgba(255,255,255,.55)}
.pack-3d{
  position:absolute;left:50%;top:50%;z-index:2;transform:translate(-50%,-50%);
  font-size:clamp(92px,10vw,130px);line-height:.86;font-weight:900;letter-spacing:-.085em;
  /* 同上：留出内边距，避免 background-clip:text 把 D 的右缘切掉 */
  padding:0 .15em;
  background:linear-gradient(145deg,#0076ae 0%,#00a7e0 34%,#17c3ae 62%,#075f86 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent;
  filter:drop-shadow(0 14px 18px rgba(0,130,175,.20));
}
.pack-code{
  position:absolute;left:26px;bottom:22px;z-index:4;
  font:700 15px/1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  letter-spacing:.23em;color:#0b4f6d;
}
.pack-stripes{
  position:absolute;inset:0;z-index:5;pointer-events:none;opacity:.9;mix-blend-mode:soft-light;
  background:repeating-linear-gradient(90deg,
    rgba(255,255,255,.60) 0 1px,
    rgba(255,255,255,0) 1px 3px,
    rgba(0,100,140,.055) 3px 4px,
    rgba(255,255,255,0) 4px 6px);
}
.pack-glare{
  position:absolute;inset:-24%;z-index:5;pointer-events:none;opacity:.8;mix-blend-mode:soft-light;
  background:radial-gradient(circle at 44% 42%,rgba(255,255,255,.85),rgba(255,255,255,0) 42%);
}
.pack-tag{
  position:absolute;z-index:3;display:flex;align-items:center;gap:7px;
  padding:8px 11px;border-radius:12px;white-space:nowrap;
  background:rgba(255,255,255,.74);border:1px solid rgba(255,255,255,.9);
  box-shadow:0 12px 28px rgba(0,75,110,.14);backdrop-filter:blur(8px);
  font-size:10.5px;font-weight:750;letter-spacing:.05em;color:#164d66;
}
.pack-tag span{font-size:7.5px;letter-spacing:.16em;color:#6a8797;font-weight:650}
.tag-a{left:-24px;top:12%;transform:rotate(-3deg)}
.tag-b{right:-20px;bottom:14%;transform:rotate(3deg);opacity:.72}
.pack-caption{
  position:relative;z-index:2;margin:24px 0 0;font-size:10px;letter-spacing:.1em;
  color:#6d8796;text-transform:uppercase;text-align:center;
}
.verify-box{padding:40px 32px 34px;border-left:1px solid rgba(9,84,116,.09);background:#fff;display:flex;flex-direction:column}
.verify-box h2{font-size:clamp(28px,3vw,38px);margin-bottom:10px}
.verify-lead{font-size:13.5px;line-height:1.75;margin:0 0 24px}
.vform{max-width:520px}
.vform-row{display:flex;gap:10px;align-items:stretch}
.vform input{
  flex:1;min-width:0;background:#fff;border:1px solid var(--line2);border-radius:13px;
  color:var(--text);font:600 19px/1 ui-monospace,SFMono-Regular,Menlo,monospace;
  letter-spacing:.26em;padding:15px 14px 15px 18px;text-transform:uppercase;
  transition:border-color .2s,box-shadow .2s;
  box-shadow:inset 0 1px 2px rgba(15,65,95,.03);
}
.vform input::placeholder{color:#9db3c2;letter-spacing:.1em;font-weight:400;font-size:15px}
.vform input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(0,161,233,.12);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 18%,transparent)}
.vform-hint{font-size:12.5px;color:var(--muted);margin:10px 0 0;line-height:1.7}
.vform-err{font-size:13px;color:var(--bad);margin:10px 0 0}
.vform-stack{max-width:none;display:flex;flex-direction:column}
.vform-label{font-size:10px;font-weight:750;letter-spacing:.14em;color:#6a8797;text-transform:uppercase;margin-bottom:8px}
.vform-stack input{width:100%}
.vform-stack .btn{width:100%;margin-top:10px}
.verify-meta{display:flex;flex-wrap:wrap;gap:16px;margin-top:auto;padding-top:22px;border-top:1px solid rgba(9,84,116,.09);font-size:10.5px;color:#6d8796}
.verify-meta span{display:inline-flex;align-items:center;gap:7px}
.verify-meta i{width:5px;height:5px;border-radius:50%;background:var(--accent)}

/* ---------- 联系 ---------- */
.contact{background:linear-gradient(180deg,#fbfeff,#f5fbff)}
.contact-panel{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,6vw,72px);
  padding:clamp(30px,4.5vw,56px);border-radius:28px;
  background:
    radial-gradient(600px 360px at 90% 0%,rgba(23,195,174,.11),transparent 60%),
    linear-gradient(135deg,#f3fcff 0%,#e9f8ff 52%,#f4fffb 100%);
  border:1px solid rgba(0,120,160,.14);
  box-shadow:0 22px 60px rgba(15,65,95,.08);
  overflow:hidden;
}
.contact-panel::after{
  /* 角标「3D」：用 SVG 描边，避免 -webkit-text-stroke 在大字号下把字形右缘裁直 */
  content:"";position:absolute;right:-14px;bottom:-46px;
  width:min(30vw,244px);aspect-ratio:480/320;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 480 320'%3E%3Ctext x='240' y='256' text-anchor='middle' font-family='Inter,Helvetica Neue,Arial,sans-serif' font-size='320' font-weight='900' letter-spacing='-32' fill='none' stroke='%230074a0' stroke-opacity='.10' stroke-width='1.6'%3E3D%3C/text%3E%3C/svg%3E") center/contain no-repeat;
  pointer-events:none;user-select:none;
}
.contact-copy{position:relative;z-index:1}
.contact-copy h2{margin-bottom:18px}
.contact-copy p{max-width:44ch;font-size:14.5px;line-height:1.9;margin-bottom:22px}
.contact-company{font-size:10.5px;font-weight:700;letter-spacing:.14em;color:#5f7f90;text-transform:uppercase}
.contact-list{position:relative;z-index:1;display:flex;flex-direction:column;justify-content:center}
.contact-item{display:grid;grid-template-columns:58px 1fr;gap:14px;padding:15px 0;border-top:1px solid rgba(9,84,116,.10)}
.contact-item:first-child{padding-top:0;border-top:0}
.contact-item > span{font-size:9.5px;font-weight:750;letter-spacing:.16em;color:#7d97a5;text-transform:uppercase;padding-top:5px}
.contact-item p,.contact-item a{margin:0;font-size:14.5px;line-height:1.7;color:#194b61}
.contact-item a{transition:color .18s;word-break:break-all}
.contact-item a:hover{color:var(--brand-dark)}

/* ---------- 通用区块（品牌页） ---------- */
.section{padding:46px 0;border-top:1px solid var(--line)}
.section-head{max-width:56ch;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,3vw,30px)}
.section-head p{color:var(--muted);margin:0}
.grid{display:grid;gap:18px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm)}
.card h3{font-size:17px;margin-bottom:6px}
.card p{color:var(--muted);font-size:14px;margin:0}
.card-media{margin:-22px -22px 16px;border-radius:var(--radius) var(--radius) 0 0;overflow:hidden;background:#eef9ff}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.step{position:relative;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
.step:before{counter-increment:step;content:"0" counter(step);display:block;font:700 12px/1 ui-monospace,monospace;color:var(--brand);letter-spacing:.18em;margin-bottom:12px}
.step h3{font-size:16px}
.step p{color:var(--muted);font-size:14px;margin:0}

/* 品牌页区块 */
.brand-page{padding-top:8px}
.blk{padding:42px 0;border-top:1px solid var(--line)}
.blk:first-child{border-top:0;padding-top:24px}
.blk-hero{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center}
/* 客户页 hero 未配图时用单列，避免正文被挤到一半宽 */
.blk-hero.no-media{grid-template-columns:1fr}
.blk-hero.no-media .blk-hero-body{max-width:72ch}
.blk-hero-media img{border-radius:var(--radius);border:1px solid var(--line);width:100%;object-fit:cover;box-shadow:var(--shadow-sm)}
.blk-eyebrow{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--brand);margin:0 0 12px;font-weight:600}
.blk-hero h1{font-size:clamp(28px,4vw,44px)}
.blk-sub{color:var(--muted);font-size:17px}
/* 正文限宽 72ch，但分隔线要占满内容宽度：限宽放到内层元素上 */
.blk-text{max-width:none}
.blk-text > h2,.blk-text > .prose{max-width:72ch}
.blk-text h2{font-size:clamp(21px,2.6vw,27px)}
.prose{color:#365364}
.blk-cta{border:1px solid #d5ebf8;border-radius:22px;padding:32px;background:linear-gradient(135deg,#effaff 0%,#f2fffb 100%);box-shadow:var(--shadow-sm)}
.blk-cta h2{margin-bottom:8px}
.blk-cta p{color:var(--muted)}
.blk-cta .vform{max-width:560px;margin-top:16px}

/* ---------- 查询结果 ---------- */
.result{max-width:640px;margin:52px auto 0}
.result-card{border:1px solid var(--line);border-radius:22px;padding:32px;background:#fff;box-shadow:var(--shadow)}
.result-card.ok{border-color:#b7efd9;box-shadow:0 0 0 1px rgba(14,159,110,.08),0 24px 60px rgba(14,159,110,.09)}
.result-card.bad{border-color:#ffd0d9;box-shadow:0 0 0 1px rgba(225,29,72,.06),0 24px 60px rgba(225,29,72,.07)}
.result-card.warn{border-color:#ffe2ae}
.status{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.status-dot{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-size:20px;flex:0 0 auto}
.ok .status-dot{background:#e9fbf3;color:var(--ok);border:1px solid #b7efd9}
.bad .status-dot{background:#fff0f3;color:var(--bad);border:1px solid #ffd0d9}
.warn .status-dot{background:#fff8e8;color:var(--warn);border:1px solid #ffe2ae}
.status h1{font-size:22px;margin:0}
.status p{margin:2px 0 0;color:var(--muted);font-size:14px}
.kv{display:grid;grid-template-columns:110px 1fr;gap:10px 16px;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:18px 0}
.kv dt{color:var(--muted);font-size:13.5px}
.kv dd{margin:0;font-size:14.5px;word-break:break-all}
.kv dd.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.16em}
.alert{border-radius:12px;padding:13px 15px;font-size:13.5px;line-height:1.6}
.alert-info{background:#eef9ff;border:1px solid #cfeaff;color:#0b5c7a}
.alert-warn{background:#fff8e8;border:1px solid #ffe2ae;color:#8a5a00}
.result-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.divider{height:1px;background:var(--line);margin:22px 0}

/* ---------- 页脚：无 Logo、无后台/小链接 ---------- */
.site-foot{border-top:1px solid var(--line);padding:26px 24px 30px;background:#f7fcff}
.foot-inner{max-width:var(--max);margin:0 auto;display:flex;flex-wrap:wrap;gap:8px 28px;align-items:center;justify-content:space-between;color:var(--muted);font-size:12.5px}
.foot-copy,.foot-note{margin:0}
.foot-copy{color:#496b7d}
.foot-note{color:#8198a6}

/* ---------- 回到顶部（悬浮小标） ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;z-index:45;
  display:grid;place-items:center;width:44px;height:44px;padding:0;
  border-radius:50%;cursor:pointer;
  color:#0b5c7a;
  background:rgba(255,255,255,.78);
  border:1px solid rgba(0,120,160,.16);
  box-shadow:0 12px 28px rgba(15,65,95,.13),inset 0 1px 0 rgba(255,255,255,.9);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;pointer-events:none;
  transform:translateY(10px) scale(.96);
  transition:opacity .22s ease,transform .22s ease,visibility .22s,border-color .18s,color .18s;
}
.to-top.is-on{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.to-top.is-on:hover{transform:translateY(-2px);color:var(--brand-dark);border-color:rgba(0,159,227,.42)}
.to-top:focus-visible{outline:2px solid rgba(0,161,233,.55);outline-offset:3px}
.to-top svg{width:18px;height:18px;display:block}

/* ---------- 客户白标页 ---------- */
.site-head.brand-only{
  display:flex;justify-content:center;align-items:center;
  width:100%;height:auto;padding:18px 24px;
  background:#fff;box-shadow:0 1px 0 rgba(15,65,95,.03);
}
.site-head.brand-only .brand{gap:0}
.brand-logo-lg{height:40px;width:auto;max-width:min(260px,72vw)}
.brand-text-lg{font-size:20px;font-weight:750;letter-spacing:.01em}
.site-foot.brand-only{background:transparent;border-top:1px solid var(--line);padding:24px 24px 34px}
.site-foot.brand-only .foot-inner{justify-content:center;text-align:center}
.site-foot.brand-only .foot-note{font-size:12.5px}
body.brand-white{background:
  radial-gradient(800px 420px at 50% -10%,rgba(0,161,233,.10),transparent 62%),
  linear-gradient(180deg,#fbfeff,#f6fbff 65%,#fbfeff)}

/* ---------- 英文占位页 ---------- */
.en-page{max-width:760px;margin:0 auto;padding:80px 0 90px}
.en-page h1{font-size:clamp(32px,4.6vw,52px);letter-spacing:-.04em;margin-bottom:16px}
.en-page .en-lead{color:var(--muted);font-size:17px;max-width:52ch}
.en-page .en-lead + .en-lead{margin-top:14px}
.en-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.en-note{
  margin:32px 0 0;padding-top:22px;border-top:1px solid var(--line);
  color:#6c8a9b;font-size:13.5px;line-height:1.75;max-width:56ch;
}

/* ---------- 说明页：帮助 / 隐私 / 404 ---------- */
.doc{max-width:780px;margin:0 auto;padding:54px 0 78px}
.doc-head{margin-bottom:32px}
.doc h1{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.03em;margin-bottom:14px}
.doc-lead{color:var(--muted);font-size:16.5px;line-height:1.75;max-width:58ch;margin:0}
.doc h2{
  font-size:19px;letter-spacing:-.02em;margin:36px 0 12px;
  padding-top:22px;border-top:1px solid var(--line);
}
.doc h2.first{border-top:0;padding-top:0;margin-top:28px}
.doc p,.doc li{color:#3d5d6e;font-size:15px;line-height:1.8}
.doc ol,.doc ul{margin:0 0 18px;padding-left:22px}
.doc li{margin-bottom:9px}
.doc li::marker{color:var(--brand);font-weight:700}
.doc strong{color:#123f55}
.doc-note{
  border:1px solid #d5ebf8;border-radius:16px;padding:18px 20px;margin:22px 0;
  background:linear-gradient(135deg,#effaff 0%,#f2fffb 100%);
  font-size:14px;color:#3d5d6e;line-height:1.75;
}
.doc-note b{color:#0b5c7a}
.doc-note p:last-child{margin-bottom:0}
.doc-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.doc-steps{counter-reset:ds;list-style:none;padding:0;margin:0 0 18px}
.doc-steps li{
  counter-increment:ds;position:relative;padding:14px 0 14px 46px;
  border-top:1px solid var(--line);margin:0;
}
.doc-steps li:first-child{border-top:0}
.doc-steps li::before{
  content:counter(ds);position:absolute;left:0;top:14px;
  display:grid;place-items:center;width:28px;height:28px;border-radius:9px;
  font:750 12px/1 ui-monospace,monospace;color:var(--brand-dark);
  background:linear-gradient(145deg,rgba(0,159,227,.13),rgba(23,195,174,.10));
}
.doc-steps b{display:block;font-size:15px;color:#123f55;margin-bottom:2px}
.doc-steps span{color:var(--muted);font-size:14px}
.kbd{
  font:600 12.5px/1.6 ui-monospace,Menlo,Consolas,monospace;
  background:#eef8ff;border:1px solid #d5ebf8;border-radius:6px;
  padding:1px 6px;letter-spacing:.1em;color:#0b5c7a;white-space:nowrap;
}
.doc-tbl{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:14px}
.doc-tbl th,.doc-tbl td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.doc-tbl th{font-size:12.5px;font-weight:700;letter-spacing:.04em;color:#54707f;background:#f7fcff}
.doc-tbl td{color:#3d5d6e}

/* 页脚说明链接 */
.foot-links{display:flex;flex-wrap:wrap;gap:6px 18px;margin:0 0 0 auto}
.foot-links a{color:#6c8a9b;font-size:12.5px;transition:color .18s}
.foot-links a:hover{color:var(--brand-dark)}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .hero-inner{gap:24px}
  .label-wrap{width:min(100%,440px)}
  .float-chip{left:-12px}
  .sink-chip{right:-8px}
  .tech-head,.section-top{grid-template-columns:1fr 1fr}
  .verify-box{padding:34px 26px 30px}
  .pack-stage{width:min(390px,92%)}
  .tag-a{left:-10px}
  .tag-b{right:-8px}
}

@media (max-width:980px){
  .hero-inner{grid-template-columns:minmax(0,1fr) minmax(0,.95fr)}
  .hero h1{font-size:clamp(42px,6vw,64px)}
  .tech-video-grid{grid-template-columns:.95fr 1.05fr;gap:30px}
  .verify-panel{grid-template-columns:1.7fr 1fr}
  .verify-visual{min-height:480px}
  .pack-stage{width:min(360px,92%)}
}

@media (max-width:860px){
  .site-head{position:relative}
  .site-head-inner{padding:0 20px}
  .hero{min-height:0}
  .hero-inner{grid-template-columns:1fr;gap:46px;padding:52px 20px 72px}
  .hero-copy{max-width:620px}
  .hero h1{font-size:clamp(43px,9vw,64px)}
  .hero-lead{max-width:52ch}
  .label-wrap{width:min(100%,460px);aspect-ratio:1.16/1;margin-top:4px}
  .big-3d{right:-14vw;top:16%;width:min(86vw,560px);opacity:.55}
  .big-3d text{stroke:rgba(0,116,160,.12)}
  .dot-field{right:-22%;width:95%;opacity:.4}
  .orbit{right:-16%;width:min(600px,90vw)}
  .orbit.b{right:-8%;width:min(470px,72vw)}
  .orbit.c{display:none}
  .mesh{display:none}
  .live-badge{top:18px;right:20px}
  .hero-hint{bottom:16px;font-size:8.5px}
  .lens{-webkit-mask-image:linear-gradient(180deg,transparent 28%,#000 62%,#000 100%);mask-image:linear-gradient(180deg,transparent 28%,#000 62%,#000 100%)}
  .intro-grid,.tech-head,.section-top,.tech-video-grid,.contact-panel{grid-template-columns:1fr;gap:22px}
  .intro-grid{padding-bottom:38px}
  .intro-head h2{max-width:14em}
  .tech-lead,.section-desc{max-width:52ch}
  .tech-head{margin:44px 0 20px}
  .tech-cards{grid-template-columns:1fr;gap:12px}
  .tech-video-grid{margin:42px 0}
  .compare{grid-template-columns:1fr;gap:14px}
  .compare-vs{top:50%;width:42px;height:42px}
  .app-grid{grid-template-columns:1fr;gap:16px}
  .verify-panel{grid-template-columns:1fr}
  .verify-visual{min-height:420px;padding:34px 20px 26px}
  .verify-box{border-left:0;border-top:1px solid rgba(9,84,116,.09);padding:32px 24px 28px}
  .pack-stage{width:min(400px,92%)}
  .contact-panel{padding:30px 24px}
  .section-inner{padding:0 20px}
  .site-nav{gap:18px;font-size:13px}
  .foot-inner{flex-direction:column;align-items:center;gap:5px;text-align:center}
  /* 竖排时两行居中（版权一行、链接一行） */
  .foot-links{margin-left:0;align-self:center;justify-content:center}
}

@media (max-width:560px){
  .site-head-inner{gap:12px}
  .brand-logo{height:31px;max-width:170px}
  .site-nav{gap:12px;font-size:12.5px}
  /* 手机改用短标签（技术/应用/查询/联系）：四项都能显示，
     不再用「隐藏应用场景」的办法凑宽度（那条规则还只匹配中文 href，英文页会失效） */
  .site-nav .nav-full{display:none}
  .site-nav .nav-short{display:inline}
  .nav-divider{height:12px}
  .hero-inner{padding:42px 18px 66px}
  .hero h1{font-size:clamp(40px,11.4vw,56px)}
  .hero-lead{font-size:14.5px}
  .br-wide{display:none}
  .actions{gap:10px}
  .btn{min-height:46px;padding:0 17px;font-size:13.5px}
  .proof{margin-top:28px;padding-top:19px}
  .proof b{font-size:13.5px}
  .proof span{font-size:9.5px;letter-spacing:.03em}
  .proof li + li{padding-left:12px}
  .label-wrap{width:100%;aspect-ratio:1.08/1}
  .sec-card{width:100%;padding:22px;border-radius:22px}
  .card-foot{left:22px;right:22px;bottom:18px}
  .card-code{font-size:15px;letter-spacing:.2em}
  .card-note{font-size:8.5px}
  .card-3d,.card-ghost{font-size:clamp(82px,24vw,112px)}
  .float-chip{left:-10px;top:2px;transform:translate3d(calc(var(--mx) * 40px),calc(var(--my) * 23px),84px) rotate(-3deg)}
  .sink-chip{right:-8px;bottom:-6px;transform:translate3d(calc(var(--mx) * -28px),calc(var(--my) * -15px),-51px) rotate(3deg)}
  .chip-v{font-size:10.5px}
  .chip-k{font-size:7.5px}
  .chip-arrow{width:22px;height:22px;font-size:11px}
  .live-badge{display:none}
  .hero-hint{font-size:8px;letter-spacing:.1em}
  .section-inner{padding:0 18px}
  .home-section{padding:56px 0}
  .home-section h2{font-size:clamp(28px,8.2vw,38px)}
  .tech-card{padding:22px 20px}
  .fact{font-size:11.5px;padding:8px 12px}
  .fact i{width:5px;height:5px}
  .video-points li{font-size:11px;padding:7px 11px}
  .tech-video-grid{gap:20px}
  .tech-video{border-radius:18px}
  .compare-col{padding:22px 20px}
  .compare-col li{font-size:12.5px}
  .compare-vs{width:38px;height:38px;font-size:9px}
  .app-body{padding:18px 18px 20px}
  .app-body h3{font-size:17px}
  .verify-visual{min-height:360px;padding:26px 14px 22px}
  .pack-3d{font-size:clamp(78px,22vw,104px)}
  .pack-front{padding:20px}
  .pack-code{left:20px;bottom:18px;font-size:13px}
  .pack-tag{padding:7px 9px;font-size:9px}
  .pack-tag span{font-size:6.5px}
  .tag-a{left:-2px}
  .tag-b{right:-2px}
  .pack-caption{margin-top:16px;font-size:8.5px}
  .verify-box{padding:28px 20px 24px}
  .contact-panel{padding:26px 20px}
  .contact-item{grid-template-columns:50px 1fr;gap:10px}
  .contact-item p,.contact-item a{font-size:13.5px}
  .site-foot{padding:22px 18px 26px}
  .foot-inner{font-size:11.5px}
  .to-top{right:16px;bottom:16px;width:40px;height:40px}
  .to-top svg{width:16px;height:16px}
  .vform-row{flex-direction:column}
  .vform input{text-align:center}
  .result-card{padding:24px}
  .kv{grid-template-columns:1fr;gap:2px}
  .kv dd{margin-bottom:10px}
  .blk-cta{padding:24px}
  .en-page{padding:56px 0 70px}
  .doc{padding:38px 0 54px}
  .doc h2{margin-top:28px;padding-top:18px}
  .doc-tbl{font-size:12.5px}
  .doc-tbl th,.doc-tbl td{padding:7px 6px}
  .doc-tbl th:first-child,.doc-tbl td:first-child{width:26%}
  .doc-tbl th:nth-child(2),.doc-tbl td:nth-child(2){width:37%}
  .foot-links{gap:6px 14px;font-size:12px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important}
  .to-top{transition:none}
}

/* ---------- 品牌页：客户主图 + 防伪查询卡片（与首页 #verify 同一套卡片） ---------- */
.blk-brand-verify{border-top:0;padding:24px 0 0}
.brand-verify-tip{
  display:flex;align-items:center;gap:9px;
  margin:0 0 14px;padding:11px 15px;
  border:1px solid #d9edfa;border-radius:13px;
  background:linear-gradient(135deg,#f2faff 0%,#f4fffb 100%);
  color:#356a83;font-size:13.5px;line-height:1.6;
}
.brand-verify-tip svg{flex:none;width:17px;height:17px;color:var(--brand)}
.brand-verify-tip span{min-width:0}
.brand-verify-media{
  position:relative;min-height:440px;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,#eef8ff 0%,#e4f3fb 100%);
}
.brand-verify-media img{width:100%;height:100%;object-fit:cover;display:block}
/* 没有主图时不占左列，查询卡片居中独占 */
.verify-panel.no-media{grid-template-columns:minmax(0,1fr);max-width:600px;margin:0 auto}
@media (max-width:1100px){
  .brand-verify-media{min-height:300px;max-height:360px}
}

/* ---------- ICP 备案（只挂中文站页脚，与版权同一行、居中） ---------- */
.foot-icp{margin:0;font-size:12px;text-align:center}
.foot-icp a{color:#8198a6}
.foot-icp a:hover{color:var(--brand-dark)}
/* 桌面：三等分，左版权 / 中备案 / 右链接，备案正好落在中间 */
@media (min-width:1101px){
  .foot-inner>.foot-copy{flex:1 1 0;text-align:left}
  .foot-inner>.foot-icp{flex:1 1 0;text-align:center}
  .foot-inner>.foot-links{flex:1 1 0;justify-content:flex-end;margin:0}
}

/* ---------- 英文站：西文字体栈 + 负字距 ----------
   中文页完全不受影响（只在 html[lang="en"] 下生效）。
   雅黑渲染英文会显得窄而扁，这是"看起来 low"的头号原因。 */
html[lang="en"] body{
  font-family:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
html[lang="en"] h1,
html[lang="en"] h2,
html[lang="en"] .hero h1,
html[lang="en"] .blk-hero h1{letter-spacing:-.015em}
html[lang="en"] .section-desc,
html[lang="en"] .hero-lead{letter-spacing:0}

/* 英文站：3D 标签上的双层标注——去掉中文后放大英文、允许两行 */
html[lang="en"] .chip-k{font-size:11.5px;line-height:1.35;letter-spacing:.16em}
html[lang="en"] .card-note{font-size:11px;font-weight:700;letter-spacing:.1em;line-height:1.35}
html[lang="en"] .card-tag{letter-spacing:.22em}

/* 英文首屏：中文标题 2 行、英文 4 行，字号必须收一档，字重也降一级（800 在西文里太重） */
html[lang="en"] .hero h1{
  font-size:clamp(30px,3.9vw,54px);
  font-weight:700;
  line-height:1.1;
  letter-spacing:-.022em;
}
/* 两行标注比原来高，把两个浮标往外推，免得压住卡片边角 */
html[lang="en"] .float-chip{transform:translate(-30px,-22px)}
html[lang="en"] .sink-chip{transform:translate(-46px,10px)}

/* 英文小标题同样收一档：中文一句 8-12 字，英文同义句 40+ 字符，按中文尺寸会撑成 4 行 */
html[lang="en"] .intro-head h2,
html[lang="en"] .tech-head h2,
html[lang="en"] .section-head h2{
  font-size:clamp(24px,2.9vw,40px);
  line-height:1.16;
  letter-spacing:-.018em;
}
/* 英文小标签更长：缩小一档，让它们还能两三个挤在一行，而不是各占一行 */
html[lang="en"] .intro-facts .fact{font-size:12px;padding:6px 12px}
html[lang="en"] .proof li b{letter-spacing:0}

/* 英文站：3D 包装展示区的标签与底部标语
   中文版是「FLOATING 悬浮层」两段；英文只留英文并放大，允许换行 */
html[lang="en"] .pack-tag{font-size:10.5px;line-height:1.35;letter-spacing:.14em;text-align:center}
html[lang="en"] .pack-tag span{display:block;font-size:11.5px;letter-spacing:.16em}
html[lang="en"] .pack-caption{display:flex;flex-direction:column;gap:6px;align-items:center;text-align:center}
html[lang="en"] .pack-slogan{font-size:13px;font-weight:700;letter-spacing:.16em;color:#0c5774}
html[lang="en"] .pack-fine{font-size:10.5px;font-weight:400;letter-spacing:0;color:#7a94a3;max-width:34ch;line-height:1.45}

/* 窄屏不要外推浮标：英文两行标注本来就更宽，推出去会贴边甚至被裁 */
@media (max-width:560px){
  html[lang="en"] .float-chip,
  html[lang="en"] .sink-chip{transform:none}
}