/* ============================================================
   云逛街 · 学而思学习机授权店
   Light theme / Blue · 2026
   ============================================================ */

:root{
  --bg:#FFFFFF;
  --bg-2:#F7FAFF;
  --bg-3:#F1F6FF;
  --ink:#0B1220;
  --ink-2:#33415C;
  --muted:#5B6B85;
  --muted-2:#8494AC;

  --blue-700:#1D4ED8;
  --blue-600:#2563EB;
  --blue-500:#3B82F6;
  --cyan:#06B6D4;
  --violet:#7C3AED;

  --line:rgba(37,99,235,.12);
  --line-2:rgba(37,99,235,.24);
  --surface:#FFFFFF;
  --surface-2:#F7FAFF;

  --grad:linear-gradient(112deg,#1D4ED8 0%,#3B82F6 52%,#06B6D4 100%);
  --grad-text:linear-gradient(112deg,#1D4ED8 0%,#2563EB 46%,#0891B2 100%);

  --r-sm:10px;
  --r-md:16px;
  --r-lg:20px;
  --r-xl:26px;

  --shadow-1:0 1px 2px rgba(16,32,64,.05),0 10px 28px -20px rgba(16,32,64,.28);
  --shadow-2:0 2px 4px rgba(16,32,64,.04),0 22px 54px -28px rgba(16,32,64,.34);
  --shadow-blue:0 14px 34px -16px rgba(37,99,235,.45);

  --ease:cubic-bezier(.22,.61,.36,1);
  --ease-out:cubic-bezier(.16,1,.3,1);

  --wrap:1200px;
  --nav-h:74px;
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--nav-h) + 18px);
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
em{font-style:normal}
::selection{background:rgba(37,99,235,.16);color:#0B1220}

:focus-visible{
  outline:2px solid var(--blue-600);
  outline-offset:3px;
  border-radius:4px;
}

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(18px,5vw,40px);
  position:relative;
  z-index:2;
}

.ico{width:1.05em;height:1.05em;flex:none;fill:none}
.muted{color:var(--muted)}

/* ---------- scroll progress ---------- */
.progress{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:var(--grad);
  z-index:120;
  box-shadow:0 0 10px rgba(37,99,235,.45);
  transition:width .1s linear;
}

/* ============================================================
   NAV
   ============================================================ */
.nav{
  position:fixed;top:0;left:0;right:0;
  z-index:100;
  height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .4s var(--ease),border-color .4s var(--ease),box-shadow .4s;
  border-bottom:1px solid transparent;
}
.nav.is-stuck{
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -26px rgba(16,32,64,.5);
}
.nav__inner{
  width:100%;max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(18px,5vw,40px);
  display:flex;align-items:center;gap:24px;
}

.brand{display:inline-flex;align-items:center;gap:11px;flex:none}
.brand__mark{
  display:grid;place-items:center;
  width:40px;height:40px;flex:none;
  transition:transform .5s var(--ease-out);
}
.brand:hover .brand__mark{transform:translateY(-1px) scale(1.05)}
.brand__text{display:flex;flex-direction:column;line-height:1.12}
.brand__text strong{font-size:17px;font-weight:700;letter-spacing:.14em;color:var(--ink)}
.brand__text em{
  font-size:9px;letter-spacing:.26em;color:var(--muted-2);
  margin-top:3px;font-weight:500;
}

.nav__links{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav__links>a{
  position:relative;
  padding:9px 13px;
  font-size:14.5px;
  color:var(--ink-2);
  border-radius:9px;
  transition:color .3s,background .3s;
  white-space:nowrap;
}
.nav__links>a:not(.nav__cta)::after{
  content:"";position:absolute;left:13px;right:13px;bottom:5px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;
  transition:transform .4s var(--ease-out);
}
.nav__links>a:not(.nav__cta):hover{color:var(--blue-700)}
.nav__links>a:not(.nav__cta):hover::after{transform:scaleX(1)}
.nav__links>a.nav__cta{
  display:inline-flex;align-items:center;gap:7px;
  margin-left:10px;
  padding:11px 20px;
  font-size:14px;font-weight:600;
  color:#fff;
  background:linear-gradient(112deg,#2563EB,#3B82F6 60%,#0EA5E9);
  border-radius:999px;
  box-shadow:var(--shadow-blue);
  transition:transform .3s var(--ease),box-shadow .3s;
}
.nav__links>a.nav__cta:hover{transform:translateY(-1px);box-shadow:0 18px 38px -14px rgba(37,99,235,.6);color:#fff}

.nav__toggle{
  display:none;
  margin-left:auto;
  width:44px;height:44px;
  border:1px solid var(--line-2);
  background:#fff;
  border-radius:12px;
  cursor:pointer;
  padding:0;
  position:relative;
  box-shadow:var(--shadow-1);
}
.nav__toggle span{
  position:absolute;left:12px;right:12px;height:1.6px;
  background:var(--ink);border-radius:2px;
  transition:transform .35s var(--ease),opacity .2s;
}
.nav__toggle span:nth-child(1){top:15px}
.nav__toggle span:nth-child(2){top:21px}
.nav__toggle span:nth-child(3){top:27px}
body.menu-open .nav__toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.menu-open .nav__toggle span:nth-child(2){opacity:0}
body.menu-open .nav__toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;
  padding-top:calc(var(--nav-h) + clamp(40px,7vw,86px));
  padding-bottom:clamp(28px,4vw,48px);
  overflow:hidden;
  background:linear-gradient(180deg,#F5F9FF 0%,#FFFFFF 62%);
}
.hero__bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.grid-lines{
  position:absolute;inset:-2px;
  background-image:
    linear-gradient(to right,rgba(37,99,235,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(37,99,235,.07) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(120% 85% at 50% 0%,#000 20%,transparent 76%);
  -webkit-mask-image:radial-gradient(120% 85% at 50% 0%,#000 20%,transparent 76%);
}
.orb{position:absolute;border-radius:50%;filter:blur(80px)}
.orb--1{width:560px;height:560px;top:-200px;left:-140px;background:radial-gradient(circle,rgba(37,99,235,.22),transparent 66%)}
.orb--2{width:560px;height:560px;top:-160px;right:-160px;background:radial-gradient(circle,rgba(6,182,212,.18),transparent 66%)}
.orb--3{width:640px;height:420px;bottom:-240px;left:36%;background:radial-gradient(circle,rgba(124,58,237,.10),transparent 70%)}

.hero__inner{
  display:grid;
  grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  align-items:center;
  gap:clamp(28px,4vw,56px);
}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12.5px;letter-spacing:.12em;
  color:var(--muted);
  text-transform:uppercase;
  font-weight:500;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--blue-600);
  box-shadow:0 0 0 4px rgba(37,99,235,.14);
  animation:pulse 2.6s ease-in-out infinite;
  flex:none;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(37,99,235,.16)}
  50%{box-shadow:0 0 0 7px rgba(37,99,235,.03)}
}

.hero__title{
  margin-top:22px;
  font-size:clamp(32px,5.4vw,62px);
  line-height:1.16;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
  text-wrap:balance;
}
.grad{
  background:var(--grad-text);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero__lead{
  margin-top:22px;
  max-width:34em;
  font-size:clamp(14.5px,1.5vw,16.5px);
  color:var(--ink-2);
  line-height:1.85;
}
.hero__lead strong{color:var(--blue-700);font-weight:600}

.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;
  border-radius:999px;
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .35s var(--ease),box-shadow .35s,background .35s,border-color .35s,color .35s;
  position:relative;
  overflow:hidden;
  -webkit-tap-highlight-color:transparent;
}
.btn--primary{
  color:#fff;
  background:linear-gradient(112deg,#2563EB,#3B82F6 58%,#0EA5E9);
  box-shadow:var(--shadow-blue);
}
.btn--primary::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(112deg,transparent 30%,rgba(255,255,255,.35),transparent 70%);
  transform:translateX(-120%);
  transition:transform .8s var(--ease);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 22px 44px -18px rgba(37,99,235,.6)}
.btn--primary:hover::after{transform:translateX(120%)}
.btn--primary .ico{transition:transform .35s var(--ease)}
.btn--primary:hover .ico{transform:translateX(4px)}
.btn--ghost{
  color:var(--blue-700);
  background:#fff;
  border-color:var(--line-2);
  box-shadow:var(--shadow-1);
}
.btn--ghost:hover{background:#F4F8FF;border-color:rgba(37,99,235,.4);transform:translateY(-2px)}
.btn--block{width:100%}

.hero__trust{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  margin-top:34px;
  font-size:13px;color:var(--muted);
}
.hero__trust li{display:inline-flex;align-items:center;gap:7px}
.hero__trust .ico{color:var(--blue-600);width:15px;height:15px}

/* ---------- device stage ---------- */
.hero__visual{position:relative;display:grid;place-items:center;min-height:420px}
.stage{
  position:relative;
  width:min(100%,440px);
  aspect-ratio:1/1;
  display:grid;place-items:center;
}
.ring{
  position:absolute;border-radius:50%;
  border:1px solid rgba(37,99,235,.14);
}
.ring--1{inset:4%;border-style:dashed;animation:spin 46s linear infinite}
.ring--2{inset:15%;border-color:rgba(6,182,212,.18);animation:spin 34s linear infinite reverse}
.ring--3{inset:26%;border-color:rgba(37,99,235,.10)}
.ring--1::before,.ring--2::before{
  content:"";position:absolute;top:-3px;left:50%;
  width:6px;height:6px;border-radius:50%;
  background:var(--blue-500);
  box-shadow:0 0 12px 2px rgba(59,130,246,.55);
  transform:translateX(-50%);
}
.ring--2::before{background:var(--cyan);box-shadow:0 0 12px 2px rgba(6,182,212,.5)}
@keyframes spin{to{transform:rotate(360deg)}}

.device{
  position:relative;
  width:82%;
  aspect-ratio:3/2;
  border-radius:16px;
  padding:9px;
  background:linear-gradient(150deg,#28334A,#0F172A 45%,#1E293B);
  border:1px solid rgba(15,23,42,.9);
  box-shadow:
    0 40px 80px -34px rgba(15,32,64,.55),
    0 0 0 1px rgba(15,23,42,.35),
    inset 0 1px 0 rgba(255,255,255,.14),
    0 24px 60px -30px rgba(37,99,235,.5);
  transform:perspective(1200px) rotateY(-11deg) rotateX(4deg);
  animation:float 7s ease-in-out infinite;
  z-index:2;
}
@keyframes float{
  0%,100%{transform:perspective(1200px) rotateY(-11deg) rotateX(4deg) translateY(0)}
  50%{transform:perspective(1200px) rotateY(-8deg) rotateX(2deg) translateY(-12px)}
}
.device__screen{
  position:relative;
  height:100%;
  border-radius:9px;
  overflow:hidden;
  background:
    radial-gradient(120% 100% at 15% 0%,rgba(59,130,246,.30),transparent 60%),
    radial-gradient(100% 90% at 90% 100%,rgba(6,182,212,.22),transparent 60%),
    linear-gradient(160deg,#0B1730,#070B16);
  border:1px solid rgba(94,240,255,.14);
}
.device__glare{
  position:absolute;inset:0;border-radius:16px;pointer-events:none;
  background:linear-gradient(115deg,rgba(255,255,255,.16) 0%,transparent 32%,transparent 62%,rgba(255,255,255,.06) 100%);
}

.ui{
  position:absolute;inset:0;
  padding:clamp(10px,2.4%,18px);
  display:flex;flex-direction:column;gap:10px;
  font-size:10px;
}
.ui__top{display:flex;align-items:center;justify-content:space-between}
.ui__pill{
  font-size:9.5px;letter-spacing:.06em;
  color:#BFE0FF;
  padding:4px 9px;border-radius:999px;
  background:rgba(94,240,255,.1);
  border:1px solid rgba(94,240,255,.22);
  white-space:nowrap;
}
.ui__dots{display:flex;gap:4px}
.ui__dots i{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.3)}
.ui__core{display:flex;align-items:center;gap:12px;margin-top:auto}
.core{
  position:relative;
  width:clamp(44px,15%,64px);aspect-ratio:1;border-radius:50%;
  display:grid;place-items:center;flex:none;
  background:rgba(94,240,255,.08);
  box-shadow:0 0 18px -4px rgba(94,240,255,.45);
}
.core::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  background:conic-gradient(from 0deg,rgba(94,240,255,.95),rgba(59,130,246,.55),rgba(139,92,246,.95),rgba(94,240,255,.95));
  animation:spin 9s linear infinite;
}
.core::before{
  content:"";position:absolute;inset:2px;border-radius:50%;
  background:radial-gradient(circle at 40% 30%,#0E1B33,#060A14);
  z-index:1;
}
.core__txt{
  position:relative;z-index:2;
  font-size:13px;font-weight:800;letter-spacing:.04em;
  background:linear-gradient(120deg,#9BF6FF,#7FA8FF);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.ui__meta{display:flex;flex-direction:column;gap:2px;min-width:0}
.ui__label{font-size:10.5px;font-weight:600;color:#EAF4FF}
.ui__sub{font-size:9px;color:#8AA3C4}
.ui__bars{display:flex;flex-direction:column;gap:6px;margin-bottom:2px}
.bar{display:grid;grid-template-columns:26px 1fr 20px;align-items:center;gap:7px;font-size:8.5px;color:#9DB2CE}
.bar i{
  display:block;height:4px;border-radius:99px;
  background:rgba(255,255,255,.1);
  position:relative;overflow:hidden;
}
.bar i::after{
  content:"";position:absolute;inset:0;width:var(--w);
  border-radius:99px;
  background:linear-gradient(90deg,#5EF0FF,#7B8CFF);
  animation:grow 2.4s var(--ease-out) both;
}
@keyframes grow{from{width:0}to{width:var(--w)}}
.bar b{font-weight:600;color:#C6D6EC;font-size:8.5px;text-align:right}

.chip{
  position:absolute;
  padding:7px 13px;
  font-size:11.5px;
  color:#1E293B;
  background:rgba(255,255,255,.94);
  border:1px solid rgba(37,99,235,.18);
  border-radius:999px;
  backdrop-filter:blur(12px);
  box-shadow:0 12px 26px -14px rgba(16,32,64,.4);
  white-space:nowrap;
  z-index:3;
}
.chip--a{top:11%;left:-4%;animation:float2 6s ease-in-out infinite}
.chip--b{bottom:19%;right:-6%;animation:float2 7.5s ease-in-out infinite .6s}
.chip--c{bottom:4%;left:4%;animation:float2 8s ease-in-out infinite 1.2s;font-size:10.5px;padding:6px 11px}
@keyframes float2{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-9px)}
}

/* ---------- stats ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  margin-top:clamp(34px,5vw,64px);
  border-top:1px solid var(--line);
  padding-top:clamp(22px,3vw,32px);
  gap:18px;
}
.stats li{display:flex;align-items:flex-start;gap:12px}
.stats b{
  font-size:clamp(26px,3.4vw,40px);
  font-weight:800;line-height:1;
  letter-spacing:-.02em;
  background:linear-gradient(160deg,#0B1220,#2563EB);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  font-variant-numeric:tabular-nums;
}
.stats b em{font-size:.5em;font-weight:600;letter-spacing:0}
.stats span{font-size:12.5px;line-height:1.55;color:var(--muted);padding-top:4px}

/* ---------- ticker ---------- */
.ticker{
  position:relative;
  border-block:1px solid var(--line);
  background:linear-gradient(90deg,rgba(37,99,235,.05),rgba(6,182,212,.05));
  overflow:hidden;
  padding:14px 0;
  z-index:2;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.ticker__track{
  display:flex;align-items:center;gap:26px;
  width:max-content;
  animation:marquee 34s linear infinite;
}
.ticker__track span{
  font-size:12.5px;letter-spacing:.18em;
  color:var(--muted);
  text-transform:uppercase;
  white-space:nowrap;
}
.ticker__track i{width:4px;height:4px;border-radius:50%;background:rgba(37,99,235,.45);flex:none}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ============================================================
   SECTIONS
   ============================================================ */
.section{
  position:relative;
  padding:clamp(60px,9vw,120px) 0;
  z-index:2;
}
.section--alt{
  background:linear-gradient(180deg,transparent,#F6FAFF 16%,#F6FAFF 84%,transparent);
}
.section--alt::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:radial-gradient(circle at 1px 1px,rgba(37,99,235,.13) 1px,transparent 0);
  background-size:26px 26px;
  mask-image:radial-gradient(90% 70% at 50% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(90% 70% at 50% 40%,#000,transparent 78%);
}

.sec-head{max-width:720px;margin-bottom:clamp(34px,4.6vw,58px)}
.sec-title{
  margin-top:18px;
  font-size:clamp(25px,3.9vw,42px);
  line-height:1.26;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--ink);
  text-wrap:balance;
}
.sec-lead{
  margin-top:16px;
  color:var(--ink-2);
  font-size:clamp(14px,1.5vw,16px);
  line-height:1.85;
  max-width:44em;
}

/* ---------- product cards ---------- */
.products{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(16px,2.2vw,26px);
}
.pcard{
  position:relative;
  padding:clamp(22px,2.6vw,34px);
  border-radius:var(--r-xl);
  background:#fff;
  border:1px solid var(--line);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform .5s var(--ease-out),border-color .5s,box-shadow .5s;
  isolation:isolate;
}
.pcard::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  padding:1px;
  background:linear-gradient(150deg,rgba(37,99,235,.55),transparent 40%,transparent 62%,rgba(6,182,212,.45));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;
  opacity:.55;
  transition:opacity .5s;
}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-2);border-color:transparent}
.pcard:hover::before{opacity:1}
.pcard__glow{
  position:absolute;width:320px;height:320px;border-radius:50%;
  top:-160px;right:-120px;filter:blur(60px);opacity:.5;z-index:-1;
  background:radial-gradient(circle,rgba(37,99,235,.35),transparent 68%);
  transition:opacity .6s,transform .6s;
}
.pcard--x5 .pcard__glow{background:radial-gradient(circle,rgba(6,182,212,.32),transparent 68%)}
.pcard:hover .pcard__glow{opacity:.8;transform:scale(1.1)}

.pcard__head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:999px;
  font-size:11.5px;letter-spacing:.08em;
  color:var(--blue-700);
  background:#EDF3FF;
  border:1px solid rgba(37,99,235,.16);
}
.badge--hot{
  color:#fff;
  background:linear-gradient(112deg,#2563EB,#3B82F6);
  border-color:transparent;
  font-weight:700;
  box-shadow:0 8px 18px -10px rgba(37,99,235,.7);
}
.pcard__idx{
  font-size:12px;letter-spacing:.2em;color:var(--muted-2);
  font-variant-numeric:tabular-nums;
}

.pcard__visual{
  height:clamp(140px,17vw,190px);
  display:grid;place-items:center;
  margin:clamp(14px,2vw,22px) 0 clamp(16px,2vw,24px);
  position:relative;
}
.mini{
  width:min(78%,300px);
  aspect-ratio:16/10;
  border-radius:11px;
  padding:6px;
  background:linear-gradient(150deg,#2A354B,#0F172A);
  border:1px solid rgba(15,23,42,.75);
  box-shadow:0 26px 46px -26px rgba(15,32,64,.55),inset 0 1px 0 rgba(255,255,255,.1);
  transform:perspective(900px) rotateX(6deg) rotateY(-6deg);
  transition:transform .6s var(--ease-out);
}
.pcard:hover .mini{transform:perspective(900px) rotateX(2deg) rotateY(-2deg) translateY(-4px) scale(1.03)}
.mini--x5{width:min(72%,272px)}
.mini__screen{
  position:relative;height:100%;border-radius:6px;overflow:hidden;
  display:grid;place-items:center;
  background:
    radial-gradient(110% 100% at 20% 0%,rgba(59,130,246,.34),transparent 62%),
    linear-gradient(155deg,#0B1730,#070B16);
  border:1px solid rgba(94,240,255,.12);
}
.mini--x5 .mini__screen{
  background:
    radial-gradient(110% 100% at 20% 0%,rgba(6,182,212,.3),transparent 62%),
    linear-gradient(155deg,#0A1728,#070B16);
}
.mini__tag{
  font-size:clamp(22px,3vw,30px);
  font-weight:800;letter-spacing:.02em;
  background:linear-gradient(140deg,#EAF6FF,#7FA8FF 60%,#67E8F9);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  opacity:.95;
  z-index:2;
}
.mini__wave{
  position:absolute;inset:auto 0 0 0;height:54%;
  background:
    linear-gradient(to top,rgba(94,240,255,.12),transparent 78%),
    repeating-linear-gradient(to bottom,rgba(140,180,255,.13) 0 1px,transparent 1px 12px);
  mask-image:linear-gradient(to top,#000,transparent 88%);
  -webkit-mask-image:linear-gradient(to top,#000,transparent 88%);
  opacity:.75;
}

.pcard__title{
  font-size:clamp(19px,2.3vw,24px);
  font-weight:700;letter-spacing:-.01em;
  line-height:1.4;
  color:var(--ink);
}
.pcard__title span{
  background:var(--grad-text);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.pcard__desc{
  margin-top:12px;
  font-size:14px;line-height:1.8;color:var(--ink-2);
}
.pcard__specs{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:10px;
  margin-top:22px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.pcard__specs li{display:flex;flex-direction:column;gap:3px}
.pcard__specs b{
  font-size:clamp(13px,1.5vw,15.5px);font-weight:700;color:var(--ink);
  letter-spacing:-.01em;
  font-variant-numeric:tabular-nums;
}
.pcard__specs span{font-size:11.5px;color:var(--muted);line-height:1.4}
.pcard__models{
  margin-top:18px;
  font-size:12px;color:var(--muted-2);
  letter-spacing:.02em;
}
.pcard__link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:20px;
  font-size:14px;font-weight:600;
  color:var(--blue-600);
  transition:gap .3s var(--ease),color .3s;
}
.pcard__link:hover{gap:14px;color:var(--blue-700)}

/* ---------- features ---------- */
.features{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(14px,1.8vw,20px);
}
.feature{
  padding:clamp(20px,2.2vw,28px);
  border-radius:var(--r-lg);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .45s var(--ease-out),box-shadow .45s,border-color .45s;
  position:relative;
  overflow:hidden;
}
.feature::after{
  content:"";position:absolute;left:0;right:0;top:0;height:2px;
  background:linear-gradient(90deg,transparent,rgba(37,99,235,.75),transparent);
  opacity:0;transition:opacity .45s;
}
.feature:hover{transform:translateY(-5px);box-shadow:var(--shadow-2);border-color:var(--line-2)}
.feature:hover::after{opacity:1}
.feature__ico{
  display:grid;place-items:center;
  width:46px;height:46px;border-radius:13px;
  background:linear-gradient(150deg,#EAF2FF,#E6F8FD);
  border:1px solid rgba(37,99,235,.16);
  color:var(--blue-600);
  margin-bottom:18px;
}
.feature__ico .ico{width:22px;height:22px}
.feature h3{font-size:16px;font-weight:700;margin-bottom:9px;letter-spacing:.01em;color:var(--ink)}
.feature p{font-size:13.5px;line-height:1.85;color:var(--muted)}

/* ---------- compare table ---------- */
.table-wrap{
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--shadow-1);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
}
.ctable{
  width:100%;
  min-width:660px;
  border-collapse:collapse;
  font-size:14px;
}
.ctable th,.ctable td{
  padding:16px 20px;
  text-align:left;
  border-bottom:1px solid rgba(37,99,235,.09);
  vertical-align:top;
}
.ctable thead th{
  font-size:13px;
  letter-spacing:.06em;
  color:var(--ink);
  background:#F5F9FF;
  position:sticky;top:0;
  border-bottom-color:var(--line-2);
  white-space:nowrap;
}
.ctable thead th em{
  display:block;
  font-size:10.5px;letter-spacing:.14em;
  color:var(--muted-2);
  font-weight:500;
  margin-top:3px;
}
.ctable thead th.ctable__t6{color:var(--blue-700);background:linear-gradient(180deg,#E9F1FF,#F3F8FF)}
.ctable thead th.ctable__t6 em{color:rgba(29,78,216,.6)}
.ctable tbody th{
  font-weight:500;
  color:var(--muted);
  width:22%;
  white-space:nowrap;
  font-size:13.5px;
  background:#FCFDFF;
}
.ctable tbody td{color:var(--ink-2)}
.ctable tbody td.ctable__t6{
  color:#10233F;
  background:linear-gradient(90deg,rgba(37,99,235,.055),rgba(37,99,235,.02));
  font-weight:500;
}
.ctable tbody tr:last-child th,.ctable tbody tr:last-child td{border-bottom:0}
.ctable tbody tr{transition:background .3s}
.ctable tbody tr:hover{background:rgba(37,99,235,.025)}
.table-note{
  margin-top:14px;font-size:12px;color:var(--muted-2);
}

/* ---------- steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(16px,2.4vw,30px);
  position:relative;
}
.step{
  position:relative;
  padding:clamp(22px,2.4vw,30px);
  border-radius:var(--r-lg);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:transform .45s var(--ease-out),border-color .45s,box-shadow .45s;
}
.step::before{
  content:"";position:absolute;top:0;left:clamp(22px,2.4vw,30px);width:52px;height:3px;
  background:var(--grad);border-radius:0 0 3px 3px;
}
.step:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-2)}
.step__num{
  display:inline-grid;place-items:center;
  width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(37,99,235,.22);
  background:#EDF3FF;
  color:var(--blue-700);
  font-size:12px;letter-spacing:.06em;
  font-variant-numeric:tabular-nums;
  margin-bottom:16px;
}
.step h3{font-size:clamp(17px,2vw,20px);font-weight:700;margin-bottom:10px;color:var(--ink)}
.step p{font-size:14px;line-height:1.85;color:var(--muted)}

/* ---------- contact ---------- */
.section--contact{overflow:hidden;background:linear-gradient(180deg,#fff,#F7FAFF 30%,#F7FAFF 70%,#fff)}
.section--contact::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(60% 60% at 12% 30%,rgba(37,99,235,.10),transparent 70%),
    radial-gradient(50% 60% at 88% 70%,rgba(6,182,212,.09),transparent 70%);
}
.contact{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,.86fr);
  gap:clamp(26px,4vw,60px);
  align-items:start;
}
.contact__info .sec-title{margin-top:16px}
.info{margin-top:34px;display:flex;flex-direction:column;gap:20px}
.info li{display:flex;gap:14px;align-items:flex-start}
.info__ico{
  display:grid;place-items:center;flex:none;
  width:38px;height:38px;border-radius:11px;
  background:#fff;
  border:1px solid var(--line);
  color:var(--blue-600);
  box-shadow:var(--shadow-1);
}
.info__ico .ico{width:18px;height:18px}
.info b{display:block;font-size:12px;letter-spacing:.1em;color:var(--muted-2);font-weight:500;margin-bottom:3px}
.info p{font-size:14.5px;color:var(--ink-2);line-height:1.6}
.info a{color:var(--blue-700);border-bottom:1px solid rgba(37,99,235,.3);padding-bottom:1px;font-weight:600}
.info a:hover{color:var(--blue-600)}

.form{
  padding:clamp(22px,3vw,34px);
  border-radius:var(--r-xl);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-2);
  display:flex;flex-direction:column;gap:16px;
}
.form__head h3{font-size:19px;font-weight:700;letter-spacing:.01em;color:var(--ink)}
.form__head p{font-size:13px;color:var(--muted);margin-top:6px}
.field{display:flex;flex-direction:column;gap:7px}
.field--row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field--row>div{display:flex;flex-direction:column;gap:7px}
.field label{font-size:12.5px;color:var(--ink-2);letter-spacing:.03em}
.field label em{color:var(--muted-2);font-size:11.5px}
.field input,.field select,.field textarea{
  width:100%;
  padding:12px 14px;
  background:#F8FAFF;
  border:1px solid rgba(37,99,235,.16);
  border-radius:11px;
  font-size:14.5px;
  color:var(--ink);
  transition:border-color .3s,box-shadow .3s,background .3s;
  appearance:none;
  -webkit-appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5l5-5' fill='none' stroke='%2364748B' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 14px center;
  padding-right:36px;
  cursor:pointer;
}
.field select option{background:#fff;color:var(--ink)}
.field textarea{resize:vertical;min-height:78px;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9AA9BE}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:rgba(37,99,235,.55);
  box-shadow:0 0 0 3px rgba(37,99,235,.10);
  background:#fff;
}
.field input.is-error,.field textarea.is-error{
  border-color:rgba(220,38,38,.65);
  box-shadow:0 0 0 3px rgba(220,38,38,.09);
}
.form__tip{font-size:11.5px;color:var(--muted-2);line-height:1.7;text-align:center}
.form__err{
  font-size:12.5px;color:#DC2626;min-height:0;
  display:none;margin-top:-4px;
}
.form__err.is-on{display:block}

/* ---------- faq ---------- */
.faq{display:flex;flex-direction:column;gap:10px;max-width:none}
.faq__item{
  border:1px solid var(--line);
  border-radius:var(--r-md);
  background:#fff;
  overflow:hidden;
  box-shadow:0 1px 2px rgba(16,32,64,.03);
  transition:border-color .35s,background .35s,box-shadow .35s;
}
.faq__item[open]{border-color:var(--line-2);background:#FBFDFF;box-shadow:var(--shadow-1)}
.faq__item summary{
  cursor:pointer;
  padding:18px 54px 18px 20px;
  font-size:15px;font-weight:600;
  color:var(--ink);
  position:relative;
  list-style:none;
  transition:color .3s;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary:hover{color:var(--blue-700)}
.faq__plus{
  position:absolute;right:20px;top:50%;
  width:14px;height:14px;transform:translateY(-50%);
}
.faq__plus::before,.faq__plus::after{
  content:"";position:absolute;background:var(--muted-2);
  border-radius:2px;transition:transform .35s var(--ease),background .35s;
}
.faq__plus::before{left:0;right:0;top:6.5px;height:1.6px}
.faq__plus::after{top:0;bottom:0;left:6.5px;width:1.6px}
.faq__item[open] .faq__plus::after{transform:rotate(90deg);opacity:0}
.faq__item[open] .faq__plus::before{background:var(--blue-600)}
.faq__body{padding:0 20px 20px;font-size:14px;line-height:1.9;color:var(--muted);max-width:62em}
.faq__body p{animation:fadeUp .45s var(--ease-out)}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- footer ---------- */
.footer{
  position:relative;
  z-index:2;
  border-top:1px solid var(--line);
  background:#F7FAFF;
  padding:clamp(40px,6vw,68px) 0 30px;
}
.footer__top{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:clamp(26px,4vw,60px);
  padding-bottom:34px;
  border-bottom:1px solid rgba(37,99,235,.1);
}
.footer__desc{margin-top:16px;font-size:13px;color:var(--muted);line-height:1.8}
.footer__nav{display:flex;gap:clamp(28px,5vw,64px)}
.footer__nav h4{
  font-size:11.5px;letter-spacing:.16em;color:var(--muted-2);
  font-weight:600;margin-bottom:14px;
}
.footer__nav a{
  display:block;font-size:13.5px;color:var(--ink-2);
  padding:4px 0;transition:color .3s,transform .3s;
}
.footer__nav a:hover{color:var(--blue-700);transform:translateX(2px)}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:8px 22px;
  justify-content:space-between;align-items:center;
  padding-top:22px;
  font-size:12.5px;color:var(--muted-2);
}
.footer__legal{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.footer__legal a{color:var(--muted);border-bottom:1px solid rgba(37,99,235,.25);padding-bottom:1px}
.footer__legal a:hover{color:var(--blue-700)}
.sep{opacity:.5}
.footer__note{
  margin-top:14px;
  font-size:11.5px;line-height:1.75;color:#94A3B8;
  max-width:70em;
}

/* ---------- totop / toast ---------- */
.totop{
  position:fixed;right:clamp(14px,3vw,26px);bottom:clamp(14px,3vw,26px);
  width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;
  background:#fff;
  border:1px solid var(--line-2);
  color:var(--blue-700);
  box-shadow:var(--shadow-2);
  z-index:90;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .4s,transform .4s,color .3s,border-color .3s,background .3s;
}
.totop.is-on{opacity:1;transform:none;pointer-events:auto}
.totop:hover{color:#fff;background:var(--blue-600);border-color:var(--blue-600)}

.toast{
  position:fixed;
  left:50%;bottom:34px;
  transform:translate(-50%,20px);
  max-width:min(90vw,440px);
  padding:13px 22px;
  border-radius:999px;
  background:#0B1220;
  border:1px solid rgba(37,99,235,.5);
  box-shadow:0 22px 48px -20px rgba(15,32,64,.6);
  color:#F1F6FF;
  font-size:13.5px;
  text-align:center;
  z-index:130;
  opacity:0;pointer-events:none;
  transition:opacity .35s,transform .35s var(--ease-out);
}
.toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .8s var(--ease-out),transform .8s var(--ease-out);
}
.reveal.is-in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1080px){
  .features{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hero__visual{min-height:360px}
  .chip--a{left:-2%}
  .chip--b{right:-2%}
}

@media (max-width:920px){
  :root{--nav-h:66px}
  .nav__toggle{display:block}

  .nav__links{
    position:fixed;
    inset:0;
    flex-direction:column;
    justify-content:center;
    align-items:stretch;
    gap:4px;
    padding:90px clamp(24px,8vw,48px) 48px;
    background:rgba(255,255,255,.98);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    margin:0;
    opacity:0;visibility:hidden;
    transition:opacity .4s var(--ease),visibility .4s;
    overflow-y:auto;
  }
  body.menu-open .nav__links{opacity:1;visibility:visible}
  body.menu-open{overflow:hidden}
  .nav__links>a{
    font-size:19px;
    padding:16px 4px;
    border-bottom:1px solid rgba(37,99,235,.12);
    color:var(--ink);
    transform:translateY(14px);opacity:0;
    transition:transform .5s var(--ease-out),opacity .5s,color .3s;
  }
  .nav__links>a::after{display:none}
  body.menu-open .nav__links>a{transform:none;opacity:1}
  body.menu-open .nav__links>a:nth-child(1){transition-delay:.06s}
  body.menu-open .nav__links>a:nth-child(2){transition-delay:.11s}
  body.menu-open .nav__links>a:nth-child(3){transition-delay:.16s}
  body.menu-open .nav__links>a:nth-child(4){transition-delay:.21s}
  body.menu-open .nav__links>a:nth-child(5){transition-delay:.26s}
  body.menu-open .nav__links>a:nth-child(6){transition-delay:.31s}
  .nav__links>a.nav__cta{
    margin:20px 0 0;
    justify-content:center;
    padding:16px 18px;
    font-size:16px;
    border-bottom:0;
    color:#fff;
  }
  .nav__links>a.nav__cta .ico{width:18px;height:18px}

  .hero{padding-top:calc(var(--nav-h) + 34px)}
  .hero__inner{grid-template-columns:1fr;gap:34px}
  .hero__visual{min-height:330px;order:2;margin-top:6px}
  .hero__copy{order:1}
  .stage{width:min(100%,380px)}
  .device{width:86%}
  .hero__title{margin-top:18px}
  .hero__lead{margin-top:18px}
  .hero__actions{margin-top:26px}
  .hero__trust{margin-top:26px;gap:8px 16px;font-size:12.5px}

  .stats{grid-template-columns:repeat(2,1fr);gap:22px 16px;margin-top:34px}
  .stats li{flex-direction:column;gap:6px}
  .stats span{padding-top:0}

  .products{grid-template-columns:1fr}
  .pcard__visual{height:170px}
  .mini{width:min(66%,300px)}
  .mini--x5{width:min(60%,260px)}

  .contact{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:22px}

  .footer__top{grid-template-columns:1fr;gap:30px}
  .footer__nav{flex-wrap:wrap;gap:26px 40px}
  .footer__bottom{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (max-width:640px){
  .table-wrap{overflow:visible;border:0;background:none;border-radius:0;box-shadow:none}
  .ctable{min-width:0;display:block}
  .ctable thead{display:none}
  .ctable tbody{display:block}
  .ctable tbody tr{
    display:block;
    padding:15px 17px 13px;
    border:1px solid var(--line);
    border-radius:14px;
    background:#fff;
    box-shadow:0 1px 2px rgba(16,32,64,.03);
    margin-bottom:10px;
  }
  .ctable tbody th{
    display:block;width:auto;
    padding:0 0 9px;border:0;
    font-size:11.5px;letter-spacing:.12em;
    color:var(--blue-700);font-weight:600;
    background:none;
  }
  .ctable tbody td{
    display:flex;gap:9px;
    padding:2px 0;border:0;
    font-size:13.5px;line-height:1.65;
    background:none!important;
  }
  .ctable tbody td::before{
    content:attr(data-k);
    flex:none;width:24px;
    color:var(--muted-2);font-size:11.5px;font-weight:600;
    padding-top:2px;
  }
  .ctable tbody td.ctable__t6{color:#10233F}
}

@media (max-width:560px){
  body{font-size:15px}
  .brand__mark{width:38px;height:38px}
  .brand__text strong{font-size:15.5px}
  .brand__text em{font-size:8px;letter-spacing:.22em}

  .eyebrow{font-size:11px;letter-spacing:.06em;line-height:1.6}
  .hero__title{font-size:clamp(29px,8.6vw,38px);line-height:1.2}
  .hero__actions{flex-direction:column;align-items:stretch}
  .btn{padding:14px 22px;font-size:14.5px}
  .hero__trust{flex-direction:column;gap:7px}

  .chip{font-size:10px;padding:6px 10px}
  .chip--a{top:2%;left:0}
  .chip--b{bottom:12%;right:0}
  .chip--c{display:none}

  .pcard__specs{grid-template-columns:1fr 1fr;gap:12px 10px}
  .pcard__specs li:last-child{grid-column:span 2}
  .features{grid-template-columns:1fr}
  .field--row{grid-template-columns:1fr}
  .form{padding:20px 18px}
  .ctable{font-size:13px}
  .ctable th,.ctable td{padding:13px 15px}
  .footer__nav{gap:22px 32px}
  .totop{width:40px;height:40px}
}

@media (min-width:1024px){
  .faq{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}
  .faq__item summary{font-size:14.5px}
}

@media (min-width:921px){
  .device{width:88%}
  .chip--a{top:7%}
  .chip--b{bottom:8%;right:-3%}
}

@media (max-width:920px){
  .chip--a{left:1%;top:6%}
  .chip--b{right:1%;bottom:14%}
}

/* ============================================================
   PRODUCT DETAIL PAGES
   ============================================================ */
.phero{
  position:relative;
  padding-top:calc(var(--nav-h) + clamp(30px,5vw,64px));
  padding-bottom:clamp(30px,5vw,60px);
  overflow:hidden;
  background:linear-gradient(180deg,#F5F9FF 0%,#FFFFFF 70%);
}
.phero__bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.phero__inner{
  display:grid;
  grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);
  gap:clamp(24px,4vw,56px);
  align-items:center;
}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:12.5px;color:var(--muted-2);
  margin-bottom:22px;
}
.crumb a{color:var(--muted);transition:color .3s}
.crumb a:hover{color:var(--blue-700)}
.crumb i{opacity:.5}
.phero h1{
  font-size:clamp(28px,4.4vw,50px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:-.02em;
  margin-top:18px;
  color:var(--ink);
  text-wrap:balance;
}
.phero h1 span{
  background:var(--grad-text);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.phero__lead{
  margin-top:18px;max-width:34em;
  font-size:clamp(14px,1.5vw,16px);
  line-height:1.85;color:var(--ink-2);
}
.kpis{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:12px;
  margin-top:28px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.kpis li{display:flex;flex-direction:column;gap:4px}
.kpis b{font-size:clamp(16px,2.1vw,21px);font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.kpis span{font-size:11.5px;color:var(--muted);line-height:1.45}
.phero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

.phero__visual{position:relative;display:grid;place-items:center;min-height:360px}
.bigdevice{
  position:relative;
  width:min(100%,470px);
  aspect-ratio:4/3;
  border-radius:20px;
  padding:11px;
  background:linear-gradient(150deg,#2A354B,#0F172A 48%,#1E293B);
  border:1px solid rgba(15,23,42,.8);
  box-shadow:0 44px 90px -40px rgba(15,32,64,.6),inset 0 1px 0 rgba(255,255,255,.12),0 20px 60px -30px rgba(37,99,235,.45);
  transform:perspective(1400px) rotateY(-10deg) rotateX(3deg);
  z-index:2;
}
.bigdevice__screen{
  position:relative;height:100%;border-radius:12px;overflow:hidden;
  background:
    radial-gradient(110% 90% at 12% 0%,rgba(59,130,246,.32),transparent 60%),
    radial-gradient(90% 90% at 92% 100%,rgba(6,182,212,.24),transparent 62%),
    linear-gradient(160deg,#0B1730,#05080F);
  border:1px solid rgba(94,240,255,.14);
  display:grid;place-items:center;
}
.bigdevice__name{
  position:relative;z-index:3;
  font-size:clamp(46px,8vw,84px);
  font-weight:800;letter-spacing:-.02em;
  background:linear-gradient(150deg,#F2FBFF,#8FC4FF 46%,#67E8F9);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  opacity:.95;
  line-height:1;
}
.bigdevice__sub{
  position:absolute;bottom:16%;left:0;right:0;
  text-align:center;
  font-size:11px;letter-spacing:.34em;color:rgba(160,200,240,.6);
  text-transform:uppercase;
  z-index:3;
}
.bigdevice__grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(94,240,255,.09) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(94,240,255,.09) 1px,transparent 1px);
  background-size:34px 34px;
  mask-image:radial-gradient(70% 70% at 50% 50%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(70% 70% at 50% 50%,#000,transparent 78%);
}
.bigdevice__tag{
  position:absolute;top:14px;left:16px;z-index:2;
  font-size:9.5px;letter-spacing:.06em;
  color:#BFE0FF;
  padding:4px 10px;border-radius:999px;
  background:rgba(94,240,255,.1);
  border:1px solid rgba(94,240,255,.22);
}
.bigdevice__bar{
  position:absolute;top:18px;right:16px;z-index:2;
  display:flex;gap:5px;
}
.bigdevice__bar i{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.3)}
.bigdevice__screen::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:46%;
  background:linear-gradient(to top,rgba(59,130,246,.18),transparent);
  pointer-events:none;
}
.phero__badge{
  position:absolute;top:6%;right:-2%;z-index:3;
  padding:8px 15px;border-radius:999px;
  font-size:11.5px;color:var(--blue-700);
  background:#fff;
  border:1px solid rgba(37,99,235,.2);
  box-shadow:0 14px 30px -16px rgba(16,32,64,.4);
}

.psec{padding:clamp(48px,7vw,90px) 0;position:relative;z-index:2}
.psec--alt{background:linear-gradient(180deg,transparent,#F6FAFF 15%,#F6FAFF 85%,transparent)}
.hlgrid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(14px,2vw,20px);
}
.hl{
  padding:clamp(20px,2.4vw,28px);
  border-radius:var(--r-lg);
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
  transition:transform .45s var(--ease-out),border-color .45s,box-shadow .45s;
}
.hl:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow-2)}
.hl__ico{
  display:grid;place-items:center;width:44px;height:44px;border-radius:12px;
  background:linear-gradient(150deg,#EAF2FF,#E6F8FD);
  border:1px solid rgba(37,99,235,.16);
  color:var(--blue-600);margin-bottom:16px;
}
.hl__ico .ico{width:21px;height:21px}
.hl h3{font-size:15.5px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.hl p{font-size:13.5px;line-height:1.85;color:var(--muted)}

.spectable{
  width:100%;
  border-collapse:collapse;
  font-size:14px;
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  background:#fff;
  box-shadow:var(--shadow-1);
}
.spectable caption{
  text-align:left;
  padding:0 0 14px;
  font-size:12.5px;letter-spacing:.1em;color:var(--blue-700);
  caption-side:top;
}
.spectable th,.spectable td{
  padding:15px 20px;
  border-bottom:1px solid rgba(37,99,235,.09);
  text-align:left;
  vertical-align:top;
}
.spectable th{
  width:26%;
  font-weight:500;
  color:var(--muted);
  background:#F8FAFF;
  white-space:nowrap;
  font-size:13.5px;
}
.spectable td{color:var(--ink-2);line-height:1.7}
.spectable tr:last-child th,.spectable tr:last-child td{border-bottom:0}

.callout{
  margin-top:clamp(24px,3vw,36px);
  padding:clamp(20px,2.6vw,30px);
  border-radius:var(--r-lg);
  border:1px solid rgba(217,119,6,.24);
  background:linear-gradient(140deg,rgba(245,158,11,.10),rgba(245,158,11,.03));
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:16px;
  align-items:start;
}
.callout__ico{
  display:grid;place-items:center;width:38px;height:38px;border-radius:11px;
  background:#FFF7E8;
  border:1px solid rgba(217,119,6,.28);
  color:#B45309;flex:none;
}
.callout h3{font-size:15.5px;font-weight:700;margin-bottom:8px;color:#92400E}
.callout p{font-size:13.5px;line-height:1.85;color:#8A5A16}

.crosslink{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:20px;
  padding:clamp(22px,3vw,34px);
  border-radius:var(--r-xl);
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--shadow-1);
}
.crosslink h3{font-size:clamp(17px,2.2vw,21px);font-weight:700;margin-bottom:6px;color:var(--ink)}
.crosslink p{font-size:13.5px;color:var(--muted)}

@media (max-width:920px){
  .phero__inner{grid-template-columns:1fr;gap:30px}
  .phero__visual{min-height:280px;order:2}
  .phero__copy{order:1}
  .bigdevice{width:min(100%,380px)}
  .phero__badge{right:0;top:2%}
  .hlgrid{grid-template-columns:1fr 1fr}
  .kpis{grid-template-columns:repeat(3,1fr);gap:10px}
}
@media (max-width:560px){
  .hlgrid{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(3,1fr);gap:8px}
  .kpis b{font-size:15px}
  .kpis span{font-size:10.5px}
  .spectable th,.spectable td{padding:12px 14px;font-size:13px}
  .spectable th{width:34%;white-space:normal}
  .callout{grid-template-columns:1fr}
  .crosslink{flex-direction:column;align-items:flex-start}
  .crosslink .btn{width:100%}
  .bigdevice__sub{font-size:9px;letter-spacing:.22em}
}

/* ---------- motion / print ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .reveal{opacity:1;transform:none}
  .device{transform:none}
  .bar i::after{width:var(--w)}
}

/* FAQ 卡片在纯白底上的分隔加强 */
.faq__item{border-color:rgba(37,99,235,.14);box-shadow:0 1px 2px rgba(16,32,64,.04),0 8px 20px -18px rgba(16,32,64,.35)}
.faq__item:hover{border-color:rgba(37,99,235,.26)}