/* ============================================================
   元职教 · gotoxyz.cn  —  style.css
   ============================================================ */

/* ---------- tokens ---------- */
:root{
  --bg:        #06090F;
  --bg-2:      #070C14;
  --panel:     rgba(255,255,255,.028);
  --panel-2:   rgba(255,255,255,.045);
  --line:      rgba(126,178,210,.13);
  --line-2:    rgba(126,178,210,.24);
  --cyan:      #35E0F0;
  --cyan-soft: rgba(53,224,240,.14);
  --gold:      #C9A35A;
  --text:      #E9EFF5;
  --muted:     #8698A9;
  --muted-2:   #5F7183;
  --radius:    2px;
  --max:       1240px;
  --ease:      cubic-bezier(.22,.61,.36,1);
  --font:      "PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --mono:      "SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*,*::before,*::after{ box-sizing:border-box; margin:0; padding:0; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  background:var(--bg); color:var(--text);
  font-family:var(--font); font-size:16px; line-height:1.7;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
::selection{ background:rgba(53,224,240,.28); color:#fff; }

/* 细滚动条 */
::-webkit-scrollbar{ width:9px; }
::-webkit-scrollbar-track{ background:#04070B; }
::-webkit-scrollbar-thumb{ background:#1B2836; border-radius:9px; }
::-webkit-scrollbar-thumb:hover{ background:#27394C; }

/* 全局噪点 + 光晕 */
body::after{
  content:""; position:fixed; inset:0; z-index:1; pointer-events:none; opacity:.22;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
  mix-blend-mode:overlay; display:none;
}

/* ---------- 鼠标光晕 ---------- */
.cursor-glow{
  position:fixed; top:0; left:0; width:520px; height:520px; z-index:0;
  margin:-260px 0 0 -260px; pointer-events:none; opacity:0;
  background:radial-gradient(circle,rgba(53,224,240,.10) 0%,rgba(53,224,240,.045) 32%,transparent 66%);
  transition:opacity .6s ease;
  will-change:transform;
}
body.has-pointer .cursor-glow{ opacity:1; }

/* ---------- 滚动进度 ---------- */
.scroll-progress{
  position:fixed; top:0; left:0; right:0; height:2px; z-index:120; background:rgba(255,255,255,.05);
}
.scroll-progress span{
  display:block; height:100%; width:0;
  background:linear-gradient(90deg,var(--gold),var(--cyan));
  box-shadow:0 0 14px rgba(53,224,240,.7);
}

/* ============================================================
   NAV
   ============================================================ */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  transition:background .45s var(--ease), backdrop-filter .45s, border-color .45s;
  border-bottom:1px solid transparent;
}
.nav.is-stuck{
  background:rgba(6,9,15,.82);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border-bottom-color:var(--line);
}
.nav-inner{
  max-width:var(--max); margin:0 auto; padding:0 28px; height:76px;
  display:flex; align-items:center; justify-content:space-between; gap:24px;
}
.logo{ display:flex; align-items:center; gap:11px; }
.logo-mark{
  width:34px; height:34px; display:grid; place-items:center;
  border:1px solid rgba(53,224,240,.5); color:var(--cyan);
  font-size:16px; font-weight:700; line-height:1;
  box-shadow:inset 0 0 14px rgba(53,224,240,.12);
  transition:box-shadow .4s, border-color .4s;
}
.logo:hover .logo-mark{ box-shadow:inset 0 0 20px rgba(53,224,240,.28), 0 0 18px rgba(53,224,240,.22); }
.logo-text{ display:flex; flex-direction:column; line-height:1.15; }
.logo-text b{ font-size:16px; font-weight:700; letter-spacing:.14em; }
.logo-text i{
  font-style:normal; font-size:8.5px; letter-spacing:.28em; color:var(--muted-2); margin-top:3px;
}
.menu{ display:flex; align-items:center; gap:6px; }
.menu-link{
  position:relative; padding:9px 15px; font-size:14px; color:#A9B8C7; letter-spacing:.04em;
  transition:color .3s;
}
.menu-link::after{
  content:""; position:absolute; left:15px; right:15px; bottom:4px; height:1px;
  background:var(--cyan); transform:scaleX(0); transform-origin:left; transition:transform .4s var(--ease);
}
.menu-link:hover{ color:#fff; }
.menu-link:hover::after,
.menu-link.is-active::after{ transform:scaleX(1); }
.menu-link.is-active{ color:#fff; }
.nav-right{ display:flex; align-items:center; gap:14px; }

/* ---------- buttons ---------- */
.btn{
  position:relative; display:inline-flex; align-items:center; justify-content:center; gap:9px;
  padding:14px 26px; font-size:14px; letter-spacing:.06em; font-weight:500;
  border:1px solid transparent; border-radius:var(--radius);
  transition:transform .35s var(--ease), background .35s, color .35s, border-color .35s, box-shadow .35s;
  white-space:nowrap; overflow:hidden;
}
.btn .arr{ transition:transform .35s var(--ease); }
.btn:hover .arr{ transform:translateX(4px); }
.btn-solid{
  background:var(--cyan); color:#04141A; font-weight:600;
  box-shadow:0 0 0 0 rgba(53,224,240,.5);
}
.btn-solid:hover{ box-shadow:0 8px 34px rgba(53,224,240,.34); }
.btn-solid::before{
  content:""; position:absolute; inset:0;
  background:linear-gradient(110deg,transparent 20%,rgba(255,255,255,.55) 48%,transparent 62%);
  transform:translateX(-120%); transition:transform .7s var(--ease);
}
.btn-solid:hover::before{ transform:translateX(120%); }
.btn-ghost{
  border-color:var(--line-2); color:#CBD8E4; background:rgba(255,255,255,.02);
}
.btn-ghost:hover{ border-color:rgba(53,224,240,.55); color:#fff; background:rgba(53,224,240,.06); }
.btn-line{
  padding:10px 20px; font-size:13px; border-color:var(--line-2); color:#D5E1EC;
}
.btn-line:hover{ border-color:var(--cyan); color:var(--cyan); background:rgba(53,224,240,.06); }
.btn-full{ width:100%; }

.burger{ display:none; width:40px; height:40px; position:relative; }
.burger span{
  position:absolute; left:9px; width:22px; height:1.5px; background:#D5E1EC;
  transition:transform .4s var(--ease), opacity .3s;
}
.burger span:nth-child(1){ top:15px; }
.burger span:nth-child(2){ top:23px; }
body.menu-open .burger span:nth-child(1){ transform:translateY(4px) rotate(45deg); }
body.menu-open .burger span:nth-child(2){ transform:translateY(-4px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative; min-height:100vh; min-height:100svh;
  padding:150px 28px 0; display:flex; flex-direction:column; align-items:center;
  overflow:hidden;
}
#fx{ position:absolute; inset:0; width:100%; height:100%; z-index:0; }
.hero-veil{
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background:
    radial-gradient(ellipse 70% 46% at 50% -6%, rgba(53,224,240,.17), transparent 70%),
    radial-gradient(ellipse 40% 32% at 84% 22%, rgba(201,163,90,.10), transparent 70%),
    linear-gradient(180deg, rgba(6,9,15,.35) 0%, rgba(6,9,15,.05) 42%, rgba(6,9,15,.92) 88%, var(--bg) 100%);
}
.hero-grid-lines{
  position:absolute; inset:0; z-index:1; pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg, rgba(126,178,210,.075) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(126,178,210,.06) 0 1px, transparent 1px 88px);
  mask-image:radial-gradient(ellipse 78% 62% at 50% 34%, #000 0%, transparent 82%);
  -webkit-mask-image:radial-gradient(ellipse 78% 62% at 50% 34%, #000 0%, transparent 82%);
}
.hero-inner{
  position:relative; z-index:2; width:100%; max-width:1000px; text-align:center;
  padding-bottom:38px;
}
.tag{
  display:inline-flex; align-items:center; gap:10px;
  padding:7px 16px 7px 12px; border:1px solid var(--line-2); border-radius:100px;
  font-size:12px; letter-spacing:.2em; color:#A7B9C9;
  background:rgba(53,224,240,.04); backdrop-filter:blur(6px);
}
.pulse{
  width:6px; height:6px; border-radius:50%; background:var(--cyan); position:relative; flex:none;
}
.pulse::after{
  content:""; position:absolute; inset:-5px; border-radius:50%;
  border:1px solid rgba(53,224,240,.55); animation:pulse 2.4s ease-out infinite;
}
@keyframes pulse{ 0%{ transform:scale(.55); opacity:.9 } 70%,100%{ transform:scale(1.55); opacity:0 } }

.hero h1{
  margin:32px 0 0;
  font-size:clamp(42px,6.4vw,88px);
  line-height:1.06; font-weight:800; letter-spacing:-.02em;
  text-shadow:0 24px 80px rgba(0,0,0,.6);
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(96deg,#8FF3FF 0%,var(--cyan) 38%,#7FB3FF 72%,#C9A35A 108%);
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
  color:transparent;
}
.lead{
  max-width:660px; margin:26px auto 0; font-size:clamp(14.5px,1.25vw,16.5px);
  line-height:2; color:#9EAEBE;
}
.hero-cta{ display:flex; justify-content:center; gap:14px; margin-top:38px; flex-wrap:wrap; }

/* terminal */
.terminal{
  width:min(620px,100%); margin:44px auto 0; text-align:left;
  border:1px solid var(--line); border-radius:3px;
  background:linear-gradient(180deg,rgba(12,18,27,.82),rgba(8,12,18,.92));
  backdrop-filter:blur(14px);
  box-shadow:0 26px 70px -34px rgba(0,0,0,.9), inset 0 1px 0 rgba(255,255,255,.04);
  overflow:hidden;
}
.t-bar{
  display:flex; align-items:center; gap:7px; padding:10px 14px;
  border-bottom:1px solid rgba(126,178,210,.1);
}
.t-bar .dot{ width:7px; height:7px; border-radius:50%; background:#2A3A4B; }
.t-bar .dot:nth-child(1){ background:#3C4C5E; }
.t-bar i{
  font-style:normal; font-family:var(--mono); font-size:10.5px; letter-spacing:.1em;
  color:var(--muted-2); margin-left:8px;
}
.t-body{
  display:flex; align-items:center; gap:10px; padding:16px; min-height:56px;
  font-family:var(--mono); font-size:12.5px; line-height:1.7; color:#B9CBD9;
}
.t-body .prompt{ color:var(--cyan); flex:none; }
#typed{ white-space:pre-wrap; word-break:break-word; }
.caret{ width:7px; height:14px; background:var(--cyan); flex:none; animation:blink 1.05s steps(1) infinite; }
@keyframes blink{ 0%,49%{ opacity:1 } 50%,100%{ opacity:0 } }

/* hero stats */
.hero-stats{
  position:relative; z-index:2; width:100%; max-width:var(--max);
  margin:auto auto 0; padding:26px 0 0;
  display:grid; grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
}
.hs{ text-align:center; padding:0 10px; }
.hs + .hs{ border-left:1px solid var(--line); }
.hs b{
  display:block; font-family:var(--mono); font-size:26px; font-weight:600;
  color:#fff; letter-spacing:.04em; line-height:1;
}
.hs span{
  display:block; margin-top:9px; font-size:11.5px; letter-spacing:.18em; color:var(--muted-2);
}
.scroll-hint{
  position:relative; z-index:2; display:flex; flex-direction:column; align-items:center;
  gap:9px; padding:26px 0 22px; font-size:9.5px; letter-spacing:.42em; color:var(--muted-2);
}
.scroll-hint i{
  width:1px; height:34px; background:linear-gradient(180deg,var(--cyan),transparent);
  animation:drop 2.1s var(--ease) infinite;
}
@keyframes drop{ 0%{ transform:scaleY(0); transform-origin:top } 45%{ transform:scaleY(1); transform-origin:top } 55%{ transform:scaleY(1); transform-origin:bottom } 100%{ transform:scaleY(0); transform-origin:bottom } }

/* ============================================================
   SECTION 通用
   ============================================================ */
.sec{
  position:relative; z-index:2;
  padding:108px 28px;
  border-top:1px solid rgba(126,178,210,.07);
}
.sec-alt{ background:linear-gradient(180deg,rgba(255,255,255,.014),transparent 60%); }
.sec-head{ position:relative; z-index:1; max-width:var(--max); margin:0 auto 58px; }
.eyebrow{
  display:flex; align-items:center; gap:11px;
  font-family:var(--mono); font-size:11px; letter-spacing:.26em; color:var(--cyan);
  text-transform:uppercase;
}
.eyebrow i{ width:26px; height:1px; background:var(--cyan); display:block; opacity:.8; }
.sec h2{
  margin-top:22px; font-size:clamp(27px,3.3vw,44px); line-height:1.2;
  font-weight:800; letter-spacing:-.015em; max-width:820px;
}
.sec h2 em{
  font-style:normal;
  background:linear-gradient(96deg,#8FF3FF,var(--cyan) 55%,#C9A35A);
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
  color:transparent;
}
.sec-sub{ max-width:640px; margin-top:18px; color:var(--muted); font-size:15px; line-height:1.95; }
.m-br{ display:none; }

/* ============================================================
   SOLUTIONS
   ============================================================ */
.sol-grid{
  max-width:var(--max); margin:0 auto;
  display:grid; grid-template-columns:repeat(3,1fr); gap:20px;
}
.sol-card{
  position:relative; padding:34px 30px 30px;
  border:1px solid var(--line); border-radius:3px;
  background:linear-gradient(180deg,var(--panel),rgba(255,255,255,.008));
  overflow:hidden;
  transition:transform .5s var(--ease), border-color .5s, background .5s;
}
.sol-card::before{
  content:""; position:absolute; inset:0; opacity:0; pointer-events:none;
  background:radial-gradient(380px circle at var(--mx,50%) var(--my,0%),rgba(53,224,240,.13),transparent 62%);
  transition:opacity .45s;
}
.sol-card:hover::before{ opacity:1; }
.sol-card:hover{
  transform:translateY(-6px);
  border-color:rgba(53,224,240,.34);
  background:linear-gradient(180deg,rgba(53,224,240,.05),rgba(255,255,255,.012));
}
.sol-top{ display:flex; align-items:flex-start; justify-content:space-between; }
.sol-num{
  font-family:var(--mono); font-size:12px; letter-spacing:.2em; color:var(--muted-2);
}
.sol-ico{
  width:44px; height:44px; display:grid; place-items:center; color:var(--cyan);
  border:1px solid rgba(53,224,240,.24); background:rgba(53,224,240,.05);
  transition:border-color .4s, box-shadow .4s, transform .5s var(--ease);
}
.sol-ico svg{ width:24px; height:24px; }
.sol-card:hover .sol-ico{
  border-color:rgba(53,224,240,.6);
  box-shadow:0 0 26px rgba(53,224,240,.22);
  transform:translateY(-2px);
}
.sol-card h3{
  margin-top:26px; font-size:19px; font-weight:700; letter-spacing:.01em;
}
.sol-card > p{
  margin-top:14px; font-size:13.6px; line-height:1.95; color:var(--muted); min-height:106px;
}
.sol-list{ list-style:none; margin-top:20px; border-top:1px solid rgba(126,178,210,.1); }
.sol-list li{
  position:relative; padding:11px 0 11px 18px; font-size:13px; color:#97A9BA;
  border-bottom:1px solid rgba(126,178,210,.07);
}
.sol-list li::before{
  content:""; position:absolute; left:0; top:19px;
  width:5px; height:5px; border:1px solid rgba(53,224,240,.6); transform:rotate(45deg);
}
.sol-link{
  display:inline-flex; align-items:center; gap:7px; margin-top:22px;
  font-size:12.5px; letter-spacing:.08em; color:var(--cyan); opacity:.85;
}
.sol-link span{ transition:transform .35s var(--ease); }
.sol-link:hover span{ transform:translateX(4px); }

/* ============================================================
   PRODUCTS
   ============================================================ */
.filter{
  max-width:var(--max); margin:0 auto 34px;
  display:flex; gap:10px; flex-wrap:wrap;
}
.chip{
  padding:9px 18px; font-size:12.5px; letter-spacing:.06em; color:#93A5B6;
  border:1px solid var(--line); border-radius:100px;
  transition:color .3s, border-color .3s, background .3s;
}
.chip:hover{ color:#fff; border-color:var(--line-2); }
.chip.is-on{
  color:#04141A; background:var(--cyan); border-color:var(--cyan); font-weight:600;
  box-shadow:0 6px 24px -8px rgba(53,224,240,.6);
}
.prod-grid{
  max-width:var(--max); margin:0 auto;
  display:grid; grid-template-columns:repeat(4,1fr); gap:16px;
}
.prod{
  position:relative; padding:26px 22px 24px; min-height:196px;
  display:flex; flex-direction:column;
  border:1px solid var(--line); border-radius:3px;
  background:linear-gradient(180deg,rgba(255,255,255,.032),rgba(255,255,255,.01));
  overflow:hidden; cursor:default;
  transition:transform .45s var(--ease), border-color .45s, box-shadow .45s, opacity .45s;
}
.prod::after{
  content:""; position:absolute; left:0; top:0; height:2px; width:100%;
  background:linear-gradient(90deg,var(--cyan),transparent);
  transform:scaleX(0); transform-origin:left; transition:transform .55s var(--ease);
}
.prod:hover{
  transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateY(-5px);
  border-color:rgba(53,224,240,.3);
  box-shadow:0 22px 50px -30px rgba(0,0,0,.95);
}
.prod:hover::after{ transform:scaleX(1); }
.prod-no{
  font-family:var(--mono); font-size:11px; letter-spacing:.2em; color:var(--muted-2);
  margin-bottom:auto;
}
.prod h3{ margin-top:26px; font-size:15.5px; font-weight:700; line-height:1.5; }
.prod p{ margin-top:10px; font-size:12.8px; line-height:1.85; color:var(--muted); }
.prod-ico{
  position:absolute; top:23px; right:20px; width:19px; height:19px; color:#7C92A6;
  transition:color .4s, transform .45s var(--ease);
}
.prod-ico svg{ width:19px; height:19px; }
.prod:hover .prod-ico{ color:var(--cyan); transform:translateY(-2px); }
.prod-more .prod-ico{ color:var(--cyan); }
.prod-tags{ display:flex; gap:6px; flex-wrap:wrap; margin-top:18px; }
.prod-tags span{
  font-size:10.5px; letter-spacing:.06em; color:#7E93A6; padding:3px 8px;
  border:1px solid rgba(126,178,210,.14); border-radius:2px;
}
.prod-more{
  display:flex; justify-content:center;
  border-style:dashed; border-color:rgba(53,224,240,.28);
  background:rgba(53,224,240,.028);
}
.prod-more .prod-no{ color:var(--cyan); }
.prod-more h3{ color:var(--cyan); }
.prod-more:hover{ background:rgba(53,224,240,.07); }
.prod.is-hidden{ display:none; }

/* ============================================================
   PLATFORM STACK
   ============================================================ */
.stack{ max-width:var(--max); margin:0 auto; border-top:1px solid var(--line); }
.stack-row{
  display:grid; grid-template-columns:200px 1fr; gap:26px; align-items:center;
  padding:26px 0; border-bottom:1px solid var(--line);
  transition:background .5s, padding .5s;
}
.stack-row:hover{ background:linear-gradient(90deg,rgba(53,224,240,.045),transparent 70%); }
.stack-label b{ display:block; font-size:16px; font-weight:700; letter-spacing:.06em; }
.stack-label span{
  display:block; font-family:var(--mono); font-size:9.5px; letter-spacing:.24em;
  color:var(--muted-2); margin-top:6px;
}
.stack-body{ display:flex; flex-wrap:wrap; gap:9px; }
.stack-body span{
  padding:8px 15px; font-size:12.5px; color:#A4B6C6;
  border:1px solid rgba(126,178,210,.14); border-radius:2px;
  background:rgba(255,255,255,.018);
  transition:color .35s, border-color .35s, background .35s, transform .35s var(--ease);
}
.stack-body span:hover{
  color:#fff; border-color:rgba(53,224,240,.42); background:rgba(53,224,240,.08);
  transform:translateY(-2px);
}

.flow{
  max-width:var(--max); margin:56px auto 0;
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  border:1px solid var(--line); border-radius:3px; overflow:hidden;
}
.flow-item{
  padding:24px 22px; position:relative;
  transition:background .45s;
}
.flow-item + .flow-item{ border-left:1px solid var(--line); }
.flow-item:hover{ background:rgba(53,224,240,.045); }
.flow-item em{
  display:block; font-style:normal; font-family:var(--mono); font-size:10px;
  letter-spacing:.2em; color:var(--gold);
}
.flow-item b{ display:block; margin-top:12px; font-size:15px; letter-spacing:.04em; }
.flow-item span{ display:block; margin-top:7px; font-size:12px; color:var(--muted-2); }

/* ============================================================
   WHY
   ============================================================ */
.why-grid{
  max-width:var(--max); margin:0 auto;
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--line); border:1px solid var(--line);
}
.why{
  padding:34px 28px 38px; background:var(--bg);
  transition:background .5s;
}
.why:hover{ background:#0A121B; }
.why-k{
  font-size:22px; font-weight:800; letter-spacing:.04em;
  background:linear-gradient(118deg,#FFFFFF 0%,#8FE7F6 50%,#C9A35A 100%);
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
  color:transparent;
}
.why p{ margin-top:16px; font-size:13.4px; line-height:1.95; color:var(--muted); }

/* ============================================================
   CONTACT
   ============================================================ */
.contact{ padding-bottom:130px; }
/* 联系区右侧为表单，编号水印会与卡片重叠，此处不显示 */
.sec.contact::before{ display:none; }
.contact-wrap{
  position:relative; z-index:1;
  max-width:var(--max); margin:0 auto;
  display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:start;
}
.contact-left h2{ margin-top:22px; }
.contact-info{ margin-top:44px; display:flex; flex-direction:column; gap:0; }
.ci{
  display:flex; align-items:baseline; gap:20px; padding:15px 0;
  border-top:1px solid var(--line);
}
.ci:last-child{ border-bottom:1px solid var(--line); }
.ci span{ font-family:var(--mono); font-size:10.5px; letter-spacing:.2em; color:var(--muted-2); flex:none; width:52px; }
.ci b{ font-size:15px; font-weight:600; letter-spacing:.02em; }
.ci b a{ color:inherit; transition:color .3s; }
.ci b a:hover{ color:var(--cyan); }
.ci.is-addr{ align-items:flex-start; }
.ci.is-addr span{ padding-top:3px; }
.ci.is-addr b{ font-size:14px; line-height:1.85; letter-spacing:.01em; }

.form{
  padding:34px 32px; border:1px solid var(--line); border-radius:3px;
  background:linear-gradient(180deg,#0C141D 0%,#080E15 100%);
  box-shadow:0 40px 90px -60px #000;
}
.field{ margin-bottom:20px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.field label{
  display:block; font-size:11.5px; letter-spacing:.14em; color:#8296A8; margin-bottom:9px;
}
.field input,.field select,.field textarea{
  width:100%; padding:13px 14px; font:inherit; font-size:13.5px; color:#EAF1F7;
  background:rgba(4,8,13,.7); border:1px solid rgba(126,178,210,.16); border-radius:2px;
  outline:none; transition:border-color .3s, box-shadow .3s, background .3s;
}
.field textarea{ resize:vertical; min-height:76px; }
.field input::placeholder,.field textarea::placeholder{ color:#4E5F70; }
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(53,224,240,.6); background:rgba(4,8,13,.95);
  box-shadow:0 0 0 3px rgba(53,224,240,.09);
}
.field select{ appearance:none; cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238699A9'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 14px center;
}
.form .btn{ margin-top:8px; }
.form-note{ margin-top:14px; font-size:11px; color:var(--muted-2); line-height:1.7; }
.field.is-err input{ border-color:rgba(255,110,110,.65); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer{
  position:relative; z-index:2; border-top:1px solid var(--line);
  background:linear-gradient(180deg,transparent,#04070B);
}
.footer-inner{
  max-width:var(--max); margin:0 auto; padding:70px 28px 50px;
  display:flex; justify-content:space-between; gap:60px; flex-wrap:wrap;
}
.f-brand p{ margin-top:20px; font-size:13px; color:var(--muted-2); letter-spacing:.04em; max-width:260px; line-height:1.9; }
.f-brand p.f-addr{ margin-top:7px; font-size:11.5px; color:#4C5F70; line-height:1.85; letter-spacing:.01em; max-width:300px; }
.f-cols{ display:flex; gap:76px; flex-wrap:wrap; }
.f-col h4{
  font-size:11px; letter-spacing:.22em; color:#7C8FA1; font-weight:600; margin-bottom:16px;
}
.f-col a{
  display:block; font-size:13px; color:#8B9DAE; padding:6px 0;
  transition:color .3s, transform .3s var(--ease);
}
.f-col a:hover{ color:var(--cyan); transform:translateX(3px); }
.footer-bottom{
  max-width:var(--max); margin:0 auto; padding:22px 28px 34px;
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
  border-top:1px solid rgba(126,178,210,.08);
  font-size:11.5px; color:#54677A; letter-spacing:.03em;
}
.footer-bottom a{
  color:inherit; border-bottom:1px solid transparent;
  transition:color .3s, border-color .3s;
}
.footer-bottom a:hover{ color:var(--cyan); border-bottom-color:rgba(53,224,240,.45); }

/* ---------- to top ---------- */
.to-top{
  position:fixed; right:26px; bottom:26px; z-index:90;
  width:44px; height:44px; display:grid; place-items:center;
  border:1px solid var(--line-2); background:rgba(8,14,21,.85);
  backdrop-filter:blur(10px); color:#A9BDCD; border-radius:2px;
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:opacity .4s, transform .4s var(--ease), visibility .4s, border-color .3s, color .3s;
}
.to-top.is-on{ opacity:1; visibility:visible; transform:translateY(0); }
.to-top:hover{ color:var(--cyan); border-color:var(--cyan); }

/* ---------- toast ---------- */
.toast{
  position:fixed; left:50%; bottom:34px; z-index:130;
  transform:translate(-50%,26px); opacity:0; visibility:hidden;
  padding:14px 24px; border:1px solid rgba(53,224,240,.4); border-radius:2px;
  background:rgba(6,14,20,.95); backdrop-filter:blur(14px);
  color:#DDF5F9; font-size:13px; letter-spacing:.03em;
  box-shadow:0 20px 50px -20px rgba(0,0,0,.9);
  transition:opacity .4s, transform .4s var(--ease), visibility .4s;
  max-width:calc(100vw - 40px); text-align:center;
}
.toast.is-on{ opacity:1; visibility:visible; transform:translate(-50%,0); }

/* ============================================================
   TICKER 滚动文字带
   ============================================================ */
.ticker{
  position:relative; z-index:2; overflow:hidden;
  padding:17px 0;
  border-top:1px solid rgba(126,178,210,.09);
  border-bottom:1px solid rgba(126,178,210,.09);
  background:linear-gradient(90deg,rgba(53,224,240,.035),rgba(255,255,255,.01) 45%,rgba(201,163,90,.03));
  mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);
}
.ticker-track{ display:flex; width:max-content; animation:marquee 48s linear infinite; }
.ticker:hover .ticker-track{ animation-play-state:paused; }
.ticker-group{ display:flex; align-items:center; gap:38px; padding-right:38px; flex:none; }
.ticker-group span{ font-size:12px; letter-spacing:.22em; color:#7E92A5; white-space:nowrap; }
.ticker-group i{
  width:5px; height:5px; flex:none; transform:rotate(45deg);
  border:1px solid rgba(53,224,240,.45);
}
@keyframes marquee{ from{ transform:translateX(0) } to{ transform:translateX(-50%) } }

/* ============================================================
   区块大编号水印
   ============================================================ */
.sec[data-no]::before{
  content:attr(data-no);
  position:absolute; top:50px; right:24px; z-index:0;
  font-family:var(--mono); font-size:148px; line-height:1; font-weight:600;
  letter-spacing:-.05em; color:rgba(126,178,210,.045);
  -webkit-text-stroke:1px rgba(126,178,210,.11);
  pointer-events:none; user-select:none;
}

/* ============================================================
   REVEAL 动画（仅在 JS 可用时启用）
   ============================================================ */
html.anim .reveal{
  opacity:0; transform:translateY(26px);
  transition:opacity .9s var(--ease), transform .9s var(--ease);
  transition-delay:var(--d,0s);
}
html.anim .reveal.in{ opacity:1; transform:none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:1180px){
  .prod-grid{ grid-template-columns:repeat(3,1fr); }
  .why-grid{ grid-template-columns:repeat(2,1fr); }
  .contact-wrap{ gap:54px; }
}
@media (max-width:1024px){
  .sec[data-no]::before{ display:none; }
  .menu{
    position:fixed; inset:76px 0 auto; flex-direction:column; align-items:stretch;
    gap:0; padding:10px 24px 26px; background:rgba(6,9,15,.97);
    backdrop-filter:blur(20px); border-bottom:1px solid var(--line);
    transform:translateY(-12px); opacity:0; visibility:hidden;
    transition:opacity .35s, transform .35s var(--ease), visibility .35s;
  }
  body.menu-open .menu{ opacity:1; visibility:visible; transform:none; }
  .menu-link{ padding:15px 4px; font-size:15px; border-bottom:1px solid rgba(126,178,210,.08); }
  .menu-link::after{ display:none; }
  .burger{ display:block; }
  .nav-right .btn-line{ display:none; }
  .sol-grid{ grid-template-columns:1fr; }
  .sol-card > p{ min-height:0; }
  .prod-grid{ grid-template-columns:repeat(2,1fr); }
  .stack-row{ grid-template-columns:1fr; gap:14px; }
  .flow{ grid-template-columns:1fr 1fr; }
  .flow-item:nth-child(3){ border-left:0; }
  .flow-item:nth-child(n+3){ border-top:1px solid var(--line); }
  .contact-wrap{ grid-template-columns:1fr; gap:48px; }
}
@media (max-width:768px){
  .nav-inner{ height:66px; padding:0 18px; }
  .menu{ inset:66px 0 auto; }
  .hero{ padding:120px 20px 0; }
  .hero h1{ margin-top:24px; }
  .m-br{ display:inline; }
  .sec{ padding:82px 20px; }
  .sec-head{ margin-bottom:42px; }
  .hero-stats{ grid-template-columns:1fr 1fr; }
  .hs:nth-child(3){ border-left:0; }
  .hs:nth-child(n+3){ border-top:1px solid var(--line); padding-top:18px; margin-top:18px; }
  .why-grid{ grid-template-columns:1fr; }
  .footer-inner{ padding:50px 20px 34px; gap:38px; }
  .f-cols{ gap:44px; }
  .footer-bottom{ padding:20px 20px 30px; font-size:10.5px; }
  .form{ padding:26px 20px; }
  .field-row{ grid-template-columns:1fr; gap:0; }
  .contact-info .ci b{ font-size:14px; }
  .to-top{ right:16px; bottom:16px; width:40px; height:40px; }
  .terminal{ margin-top:34px; }
  .t-body{ font-size:11.5px; padding:14px; }
}
@media (max-width:560px){
  .prod-grid{ grid-template-columns:1fr; }
  .prod{ min-height:0; }
  .flow{ grid-template-columns:1fr; }
  .flow-item + .flow-item{ border-left:0; border-top:1px solid var(--line); }
  .hero-cta{ flex-direction:column; }
  .hero-cta .btn{ width:100%; }
  .hero-stats b{ font-size:22px; }
  .hs span{ font-size:10.5px; letter-spacing:.1em; }
}

@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
  html.anim .reveal{ opacity:1; transform:none; }
}