/* ================= 设计变量 ================= */
:root{
  --bg:#050a14;
  --bg-deep:#040910;
  --panel:#0b1626;
  --card:rgba(17,32,58,.45);
  --border:rgba(90,160,255,.14);
  --border-strong:rgba(51,204,255,.45);
  --accent:#33ccff;
  --accent-2:#2b6bff;
  --accent-soft:rgba(51,204,255,.09);
  --text:#f1f5f9;
  --text-2:#94a3b8;
  --text-3:#5f7189;
  --ok:#34d399;
  --radius:16px;
  --header-h:68px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
/* ================= 基础 ================= */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px);-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  font-size:16px;line-height:1.75;overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}
::selection{background:rgba(51,204,255,.28);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{width:min(1180px,100% - 40px);margin-inline:auto}
.mono{font-family:"JetBrains Mono",Consolas,"Courier New",monospace}

/* ================= 通用按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 30px;border-radius:11px;font-size:15px;font-weight:600;
  letter-spacing:.02em;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background-color .25s,border-color .25s,filter .25s;
  border:1px solid transparent;white-space:nowrap;
}
.btn svg{flex:none}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#04101d;
  box-shadow:0 8px 24px -10px rgba(51,204,255,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px -10px rgba(51,204,255,.65);filter:brightness(1.06)}
.btn-primary:active{transform:translateY(0) scale(.97)}
.btn-ghost{
  border-color:rgba(51,204,255,.38);color:#d9f4ff;background:rgba(51,204,255,.05);
}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(51,204,255,.12);border-color:var(--border-strong)}
.btn-ghost:active{transform:translateY(0) scale(.97)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:9px}

/* ================= 顶部导航 ================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  transition:background-color .35s,border-color .35s,box-shadow .35s;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(5,10,20,.82);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom-color:var(--border);
  box-shadow:0 10px 30px -18px rgba(0,0,0,.8);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);gap:20px}
.logo{display:flex;align-items:center;gap:11px;font-weight:700;font-size:17.5px;letter-spacing:.01em}
.logo-mark{width:37px;height:37px;flex:none;filter:drop-shadow(0 0 10px rgba(51,204,255,.35))}
.logo small{display:block;font-size:10.5px;font-weight:500;color:var(--text-3);letter-spacing:.14em;line-height:1.3}
.logo-text{line-height:1.25}
.main-nav{display:none;align-items:center;gap:6px}
.main-nav a{
  position:relative;padding:8px 13px;font-size:14.5px;color:var(--text-2);border-radius:8px;
  transition:color .25s,background-color .25s;
}
.main-nav a:hover{color:#fff;background:rgba(51,204,255,.07)}
.main-nav a.active{color:var(--accent)}
.main-nav a.active::after{
  content:"";position:absolute;left:50%;bottom:1px;width:16px;height:2px;border-radius:2px;
  transform:translateX(-50%);background:linear-gradient(90deg,var(--accent),var(--accent-2));
}
.header-actions{display:flex;align-items:center;gap:12px}
.header-cta{display:none}
.hamburger{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border:1px solid var(--border);border-radius:10px;
  background:rgba(13,25,45,.55);transition:border-color .25s;
}
.hamburger:hover{border-color:var(--border-strong)}
.hamburger span{display:block;width:20px;height:2px;border-radius:2px;background:#dbe7f5;transition:transform .3s var(--ease),opacity .2s}
.site-header.nav-open .hamburger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header.nav-open .hamburger span:nth-child(2){opacity:0}
.site-header.nav-open .hamburger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-nav{
  position:fixed;top:var(--header-h);left:0;right:0;z-index:99;
  background:rgba(6,12,24,.97);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  padding:12px 20px 22px;display:flex;flex-direction:column;gap:2px;
  transform:translateY(-10px);opacity:0;visibility:hidden;
  transition:transform .28s var(--ease),opacity .28s,visibility .28s;
  max-height:calc(100vh - var(--header-h));overflow-y:auto;
}
.mobile-nav.open{transform:none;opacity:1;visibility:visible}
.mobile-nav a{padding:13px 12px;border-radius:10px;font-size:15.5px;color:var(--text-2);display:flex;justify-content:space-between;align-items:center}
.mobile-nav a:hover,.mobile-nav a:active{background:rgba(51,204,255,.08);color:#fff}
.mobile-nav .mobile-cta{margin-top:12px;justify-content:center}

/* ================= 通用区块 ================= */
.section{padding:76px 0;position:relative}
.sec-head{max-width:660px;margin:0 auto 52px;text-align:center}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;
  border:1px solid rgba(51,204,255,.28);background:var(--accent-soft);
  color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.06em;margin-bottom:18px;
}
.sec-tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent)}
.sec-head h2,.cta-band h2{font-size:clamp(26px,4.2vw,38px);font-weight:700;letter-spacing:.01em;line-height:1.3}
.sec-sub{margin-top:14px;color:var(--text-2);font-size:15.5px}
.grad-text{
  background:linear-gradient(100deg,var(--accent) 10%,#7db4ff 60%,var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
/* 滚动进入 */
html.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
html.js .reveal.in{opacity:1;transform:none}
html.js .reveal.d1{transition-delay:.08s}
html.js .reveal.d2{transition-delay:.16s}
html.js .reveal.d3{transition-delay:.24s}

/* ================= Hero ================= */
.hero{
  position:relative;min-height:100vh;min-height:100svh;
  display:flex;align-items:center;
  padding:calc(var(--header-h) + 56px) 0 90px;overflow:hidden;
}
.hero-bg-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(90,160,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(90,160,255,.055) 1px,transparent 1px);
  background-size:54px 54px;
  -webkit-mask-image:radial-gradient(ellipse 95% 72% at 50% 34%,#000 25%,transparent 78%);
  mask-image:radial-gradient(ellipse 95% 72% at 50% 34%,#000 25%,transparent 78%);
}
.hero-glow{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;animation:float 14s ease-in-out infinite alternate}
.hero-glow.g1{width:560px;height:560px;background:radial-gradient(circle,rgba(43,107,255,.34),transparent 68%);top:-160px;left:50%;transform:translateX(-72%)}
.hero-glow.g2{width:460px;height:460px;background:radial-gradient(circle,rgba(51,204,255,.2),transparent 68%);bottom:-120px;right:-100px;animation-delay:-7s}
@keyframes float{from{transform:translate(-72%,0) scale(1)}to{transform:translate(-72%,26px) scale(1.06)}}
.hero-glow.g2{animation-name:float2}
@keyframes float2{from{transform:translate(0,0) scale(1)}to{transform:translate(-24px,-30px) scale(1.08)}}
.hero-inner{position:relative;text-align:center;max-width:840px;margin-inline:auto}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:7px 18px;border-radius:999px;
  border:1px solid rgba(51,204,255,.3);background:rgba(8,17,32,.72);color:#bcd7ee;
  font-size:13.5px;letter-spacing:.04em;margin-bottom:28px;
}
.hero-badge b{color:var(--accent);font-weight:600}
.hero h1{
  font-size:clamp(33px,6.4vw,60px);font-weight:800;line-height:1.22;letter-spacing:.01em;
  text-wrap:balance;
}
.hero-sub{
  margin:26px auto 0;max-width:620px;color:var(--text-2);font-size:clamp(15px,1.9vw,17px);
  text-wrap:balance;
}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;margin-top:42px}
.hero-meta{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px 26px;margin-top:46px;
  color:var(--text-3);font-size:13.5px;
}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta svg{color:var(--accent);flex:none}
.hero-scroll{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);
  color:var(--text-3);display:flex;flex-direction:column;align-items:center;gap:8px;font-size:11.5px;letter-spacing:.22em;
}
.hero-scroll::after{
  content:"";width:1px;height:34px;background:linear-gradient(180deg,var(--accent),transparent);
  animation:pulse-line 2.2s ease-in-out infinite;
}
@keyframes pulse-line{0%,100%{opacity:.25}50%{opacity:1}}

/* ================= 通用卡片 ================= */
.grid{display:grid;gap:20px}
.card{
  background:linear-gradient(180deg,rgba(19,35,62,.5),rgba(10,20,38,.32));
  border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 26px;position:relative;
  transition:transform .32s var(--ease),border-color .32s,box-shadow .32s,background-color .32s;
}
.card:hover{
  transform:translateY(-6px);border-color:var(--border-strong);
  box-shadow:0 22px 44px -20px rgba(35,150,255,.38);
}
.icon-box{
  width:50px;height:50px;border-radius:13px;display:grid;place-items:center;flex:none;
  background:var(--accent-soft);border:1px solid rgba(51,204,255,.24);color:var(--accent);
  margin-bottom:20px;transition:box-shadow .3s,transform .3s var(--ease);
}
.card:hover .icon-box{box-shadow:0 0 22px -4px rgba(51,204,255,.5);transform:translateY(-2px)}
.card h3{font-size:17.5px;font-weight:600;margin-bottom:10px;letter-spacing:.01em}
.card p{color:var(--text-2);font-size:14.5px}

/* ================= About ================= */
.about-grid{display:grid;gap:52px;align-items:center}
.about-copy .sec-tag{margin-bottom:16px}
.about-copy h2{text-align:left;font-size:clamp(25px,3.6vw,34px);font-weight:700;line-height:1.35;margin-bottom:8px}
.about-lead{margin-top:20px;color:var(--text-2);font-size:15.5px}
.about-list{margin-top:26px;display:grid;gap:13px}
.about-list li{display:flex;gap:12px;align-items:flex-start;color:#c9d8ea;font-size:15px}
.about-list svg{color:var(--accent);flex:none;margin-top:4px}
.about-list b{color:#fff;font-weight:600}
.about-visual{position:relative;display:flex;justify-content:center}
.about-glow{
  position:absolute;left:4%;right:4%;top:8%;bottom:8%;border-radius:50%;filter:blur(80px);pointer-events:none;
  background:radial-gradient(circle,rgba(43,107,255,.26),transparent 70%);
}
.mock-card{
  position:relative;width:min(420px,100%);border-radius:20px;padding:26px;
  background:linear-gradient(160deg,#0e1c33 0%,#0a1526 70%);
  border:1px solid rgba(90,160,255,.22);
  box-shadow:0 40px 80px -30px rgba(0,0,0,.7),0 0 60px -20px rgba(43,107,255,.35);
}
.mock-head{display:flex;align-items:center;gap:13px;padding-bottom:18px;border-bottom:1px dashed rgba(90,160,255,.18)}
.mock-icon{width:44px;height:44px;border-radius:11px;background:var(--accent-soft);border:1px solid rgba(51,204,255,.3);display:grid;place-items:center;color:var(--accent);flex:none}
.mock-head h4{font-size:15.5px;font-weight:600}
.mock-head small{display:block;color:var(--text-3);font-size:12.5px;font-weight:400;margin-top:2px}
.mock-rows{margin-top:18px;display:grid;gap:14px}
.mock-row{display:flex;justify-content:space-between;align-items:center;gap:14px;font-size:13.5px}
.mock-row .k{color:var(--text-3)}
.mock-row .v{color:#dbe7f5;font-weight:500}
.pill{
  display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;
}
.pill-ok{background:rgba(52,211,153,.12);color:var(--ok);border:1px solid rgba(52,211,153,.32)}
.pill-ok::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px var(--ok)}
.mock-key{
  margin-top:18px;padding:15px 17px;border-radius:12px;
  background:rgba(4,9,17,.72);border:1px solid rgba(90,160,255,.16);
  font-size:14px;letter-spacing:.12em;color:#9fdcff;display:flex;justify-content:space-between;align-items:center;gap:10px;
}
.mock-key svg{color:var(--accent);flex:none}
.mock-bar{margin-top:18px}
.mock-bar small{display:flex;justify-content:space-between;color:var(--text-3);font-size:12px;margin-bottom:8px}
.mock-bar .track{height:6px;border-radius:6px;background:rgba(90,160,255,.12);overflow:hidden}
.mock-bar .fill{height:100%;width:82%;border-radius:6px;background:linear-gradient(90deg,var(--accent),var(--accent-2));box-shadow:0 0 12px rgba(51,204,255,.5)}
.mock-float{
  position:absolute;padding:10px 16px;border-radius:12px;font-size:13px;font-weight:600;
  background:rgba(10,20,38,.92);border:1px solid rgba(51,204,255,.35);
  box-shadow:0 16px 36px -14px rgba(0,0,0,.7);display:flex;align-items:center;gap:9px;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.mock-float svg{color:var(--accent)}
.mock-float.f1{top:-20px;right:-8px;color:#cfeaff}
.mock-float.f2{bottom:-18px;left:-14px;color:#cfeaff}
@media (max-width:600px){.mock-float.f1{right:2px;top:-16px}.mock-float.f2{left:2px;bottom:-14px}}

/* ================= 核心优势 ================= */
.features-grid{grid-template-columns:1fr}
@media (min-width:680px){.features-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.features-grid{grid-template-columns:repeat(3,1fr);gap:24px}}

/* ================= 安全保障 ================= */
.security-wrap{
  position:relative;overflow:hidden;border-radius:26px;
  background:linear-gradient(150deg,rgba(18,36,66,.6),rgba(7,14,26,.75));
  border:1px solid rgba(90,160,255,.18);
  padding:34px 26px;
}
.security-wrap::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(90,160,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(90,160,255,.045) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(ellipse 80% 90% at 85% 0%,#000 20%,transparent 75%);
  mask-image:radial-gradient(ellipse 80% 90% at 85% 0%,#000 20%,transparent 75%);
}
.security-grid{position:relative;display:grid;gap:16px;grid-template-columns:1fr}
@media (min-width:680px){.security-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1120px){.security-grid{grid-template-columns:repeat(4,1fr);gap:18px}}
.sec-item{
  display:flex;flex-direction:column;gap:0;padding:26px 24px;border-radius:16px;
  background:rgba(6,13,26,.66);border:1px solid rgba(90,160,255,.14);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
.sec-item:hover{transform:translateY(-5px);border-color:var(--border-strong);box-shadow:0 18px 38px -18px rgba(35,150,255,.35)}
.sec-item h3{font-size:16.5px;font-weight:600;margin-bottom:8px}
.sec-item p{color:var(--text-2);font-size:14px}
.sec-item .icon-box{margin-bottom:16px}

/* ================= 技术亮点 ================= */
.tech-section{padding-top:0}
.tech-row{display:grid;gap:46px;align-items:center;padding:56px 0}
.tech-row + .tech-row{border-top:1px dashed rgba(90,160,255,.14)}
.tech-copy .sec-tag{margin-bottom:14px}
.tech-copy h3{font-size:clamp(21px,2.8vw,27px);font-weight:700;line-height:1.35;margin-bottom:8px}
.tech-lead{margin-top:14px;color:var(--text-2);font-size:15px}
.tech-list{margin-top:22px;display:grid;gap:12px}
.tech-list li{display:flex;gap:11px;align-items:flex-start;color:#c9d8ea;font-size:14.5px}
.tech-list svg{color:var(--accent);flex:none;margin-top:4px}
.tech-visual{
  position:relative;padding:34px 28px;border-radius:22px;
  background:linear-gradient(160deg,rgba(15,30,55,.55),rgba(8,16,30,.5));
  border:1px solid rgba(90,160,255,.18);
}
.tech-visual::after{
  content:"";position:absolute;inset:14px;border-radius:14px;pointer-events:none;
  border:1px solid rgba(90,160,255,.08);
}
.tech-visual > *{position:relative}
/* 管线图 */
.pipeline{display:grid}
.p-step{position:relative;display:flex;align-items:center;gap:16px;padding:15px 4px}
.p-step:not(:last-child)::after{
  content:"";position:absolute;left:26px;top:60px;bottom:-2px;width:1px;
  background:linear-gradient(180deg,rgba(51,204,255,.55),rgba(51,204,255,.08));
}
.p-num{
  width:52px;height:52px;border-radius:50%;flex:none;display:grid;place-items:center;
  background:rgba(6,13,26,.9);border:1px solid rgba(51,204,255,.35);color:var(--accent);
  box-shadow:0 0 18px -4px rgba(51,204,255,.4);
}
.p-step h4{font-size:15px;font-weight:600}
.p-step small{display:block;color:var(--text-3);font-size:12.5px;font-weight:400;margin-top:2px}
@media (min-width:768px){
  .pipeline{grid-auto-flow:column;grid-auto-columns:1fr}
  .p-step{flex-direction:column;text-align:center;gap:11px;padding:20px 6px}
  .p-step:not(:last-child)::after{
    left:calc(50% + 40px);top:26px;bottom:auto;width:calc(100% - 80px);height:1px;
    background:linear-gradient(90deg,rgba(51,204,255,.55),rgba(51,204,255,.08));
  }
}
/* 分层示意 */
.layer-stack{display:grid;gap:13px}
.layer-card{
  display:flex;gap:15px;align-items:center;padding:17px 19px;border-radius:14px;
  background:linear-gradient(120deg,rgba(15,30,55,.92),rgba(9,18,34,.75));
  border:1px solid rgba(90,160,255,.2);
  transition:transform .3s var(--ease),border-color .3s;
}
.layer-card:hover{transform:translateX(6px);border-color:var(--border-strong)}
.layer-card .icon-box{width:42px;height:42px;margin:0;border-radius:11px}
.layer-card h4{font-size:15px;font-weight:600}
.layer-card p{font-size:12.5px;margin-top:2px}
.layer-num{margin-left:auto;font-size:12px;color:var(--text-3);letter-spacing:.14em}
@media (min-width:768px){
  .layer-card:nth-child(2){margin-left:26px}
  .layer-card:nth-child(3){margin-left:52px}
}
/* API 代码卡 */
.api-card{
  background:#071120;border:1px solid rgba(90,160,255,.2);border-radius:16px;overflow:hidden;
}
.api-bar{display:flex;align-items:center;gap:6px;padding:12px 16px;background:rgba(12,24,44,.85);border-bottom:1px solid rgba(90,160,255,.12)}
.api-bar .dot{width:10px;height:10px;border-radius:50%}
.api-bar .dot:nth-child(1){background:#ff5f57}.api-bar .dot:nth-child(2){background:#febc2e}.api-bar .dot:nth-child(3){background:#28c840}
.api-bar .url{margin-left:10px;font-size:11px;color:var(--text-3);font-family:Consolas,monospace;letter-spacing:.04em}
.api-body{padding:20px 22px;font-family:Consolas,"Courier New",monospace;font-size:12.8px;line-height:2.05;color:#9fb6d4;overflow-x:auto;white-space:pre}
.tok-ok{color:#34d399}.tok-key{color:#8ad4ff}.tok-str{color:#7ee0b0}.tok-num{color:#ffb86c}.tok-cm{color:#586c85}.tok-url{color:#c8b6ff}
@media (min-width:992px){
  .tech-row{grid-template-columns:1fr 1fr;gap:70px;padding:64px 0}
  .tech-row.flip .tech-copy{order:2}
}

/* ================= 产品展示 ================= */
.showcase-grid{grid-template-columns:1fr}
@media (min-width:768px){.showcase-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1120px){.showcase-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.showcase-card{display:flex;flex-direction:column;padding:0;overflow:hidden}
.shot{background:#0a1424;border-bottom:1px solid rgba(90,160,255,.12)}
.shot-bar{display:flex;align-items:center;gap:6px;padding:11px 14px;background:rgba(13,25,45,.92);border-bottom:1px solid rgba(90,160,255,.1)}
.shot-bar .dot{width:9px;height:9px;border-radius:50%;flex:none}
.shot-bar .dot:nth-child(1){background:#ff5f57}.shot-bar .dot:nth-child(2){background:#febc2e}.shot-bar .dot:nth-child(3){background:#28c840}
.shot-url{margin-left:10px;flex:1;font-size:11px;color:var(--text-3);font-family:Consolas,monospace;letter-spacing:.03em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.shot-body{padding:16px;display:grid;gap:10px}
.prod-row{display:flex;align-items:center;gap:12px;padding:11px 12px;border:1px solid rgba(90,160,255,.14);border-radius:10px;background:rgba(6,13,26,.55)}
.thumb{width:38px;height:38px;border-radius:9px;flex:none;display:grid;place-items:center;color:#06121f;background:linear-gradient(135deg,#33ccff,#2b6bff)}
.prod-info{flex:1;min-width:0}
.prod-info b{display:block;font-size:13px;font-weight:600;line-height:1.4}
.prod-info small{display:block;font-size:11px;color:var(--text-3)}
.prod-price{font-size:13px;color:var(--accent);font-weight:700;white-space:nowrap}
.mini-btn{padding:6px 13px;border-radius:8px;font-size:12px;font-weight:600;background:rgba(51,204,255,.12);border:1px solid rgba(51,204,255,.3);color:#9fdcff;white-space:nowrap;flex:none}
.shot-field{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12.5px;color:var(--text-2);padding:9px 2px;border-bottom:1px dashed rgba(90,160,255,.12)}
.shot-field:last-of-type{border-bottom:none}
.shot-field .v{color:#dbe7f5;font-weight:500;text-align:right}
.order-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 12px;border:1px solid rgba(90,160,255,.12);border-radius:10px;background:rgba(6,13,26,.55)}
.order-id{font-family:Consolas,monospace;font-size:12px;color:#9fdcff}
.order-row small{display:block;color:var(--text-3);font-size:11px;margin-top:1px}
.pill-wait{background:rgba(51,204,255,.1);color:#7fd8ff;border:1px solid rgba(51,204,255,.3)}
.showcase-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.showcase-body h3{font-size:17px;font-weight:600}
.showcase-body p{color:var(--text-2);font-size:14px}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}
.tag{padding:4px 13px;border-radius:999px;border:1px solid rgba(51,204,255,.25);color:#9fdcff;font-size:12.5px;background:var(--accent-soft)}

/* ================= 客户场景 ================= */
.scene-grid{grid-template-columns:1fr}
@media (min-width:680px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.scene-grid{grid-template-columns:repeat(3,1fr);gap:24px}}

/* ================= FAQ ================= */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:14px}
.faq-item{border:1px solid var(--border);border-radius:15px;background:linear-gradient(180deg,rgba(17,32,58,.45),rgba(10,20,38,.3));transition:border-color .3s,box-shadow .3s;overflow:hidden}
.faq-item.open{border-color:var(--border-strong);box-shadow:0 14px 34px -18px rgba(35,150,255,.3)}
.faq-q{width:100%;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:19px 22px;text-align:left;font-size:15.5px;font-weight:600;color:var(--text);transition:color .25s}
.faq-q:hover{color:#dff2ff}
.faq-q .chev{flex:none;color:var(--text-3);transition:transform .35s var(--ease),color .35s}
.faq-item.open .chev{transform:rotate(180deg);color:var(--accent)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s var(--ease)}
.faq-a-inner{padding:0 22px 20px;color:var(--text-2);font-size:14.5px}

/* ================= CTA ================= */
.cta-band{
  position:relative;overflow:hidden;text-align:center;border-radius:28px;padding:78px 24px;
  background:linear-gradient(140deg,rgba(21,42,78,.8),rgba(8,16,30,.92));
  border:1px solid rgba(90,160,255,.22);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(90,160,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(90,160,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(ellipse 90% 100% at 50% 0%,#000 25%,transparent 80%);
  mask-image:radial-gradient(ellipse 90% 100% at 50% 0%,#000 25%,transparent 80%);
}
.cta-glow{position:absolute;width:460px;height:460px;border-radius:50%;filter:blur(85px);background:radial-gradient(circle,rgba(51,204,255,.2),transparent 70%);top:-190px;left:50%;transform:translateX(-50%);pointer-events:none}
.cta-band h2,.cta-band p,.cta-band .btn{position:relative}
.cta-band p{margin:16px auto 34px;color:var(--text-2);max-width:540px;font-size:15.5px}

/* ================= Footer / 联系 ================= */
.footer{background:var(--bg-deep);border-top:1px solid var(--border);padding-top:80px;position:relative;overflow:hidden}
.footer::after{
  content:"";position:absolute;top:-1px;left:50%;transform:translateX(-50%);
  width:min(680px,80%);height:1px;
  background:linear-gradient(90deg,transparent,rgba(51,204,255,.65),transparent);
}
.contact-grid{grid-template-columns:1fr;gap:16px}
@media (min-width:680px){.contact-grid{grid-template-columns:repeat(2,1fr)}}
.contact-card{
  display:flex;gap:16px;align-items:flex-start;padding:24px;border-radius:16px;text-align:left;
  background:rgba(11,22,41,.5);border:1px solid var(--border);
  transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
.contact-card .icon-box{margin:0;width:44px;height:44px;border-radius:11px}
.contact-card h4{font-size:15px;font-weight:600;margin-bottom:5px}
.contact-card p{font-size:14px;color:var(--text-2);word-break:break-all}
.contact-card .hint{margin-top:8px;font-size:12px;color:var(--text-3);display:inline-flex;gap:6px;align-items:center}
button.contact-card{cursor:pointer;width:100%;font:inherit;color:inherit}
button.contact-card:hover,.contact-card:hover{border-color:var(--border-strong);transform:translateY(-3px);box-shadow:0 16px 34px -18px rgba(35,150,255,.35)}
.footer-nav{display:grid;grid-template-columns:1fr;gap:36px;padding:54px 0 44px;border-top:1px dashed rgba(90,160,255,.14);margin-top:64px}
@media (min-width:860px){.footer-nav{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.f-brand .logo{margin-bottom:4px}
.f-brand p{margin-top:14px;color:var(--text-2);font-size:14px;max-width:320px}
.f-col h5{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.05em;font-weight:600}
.f-col a{display:block;padding:6px 0;color:var(--text-2);font-size:14px;transition:color .25s}
.f-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;padding:22px 0 30px;border-top:1px solid var(--border);color:var(--text-3);font-size:13px}

/* ================= 回到顶部 / Toast ================= */
.to-top{
  position:fixed;right:20px;bottom:20px;z-index:90;width:46px;height:46px;border-radius:12px;
  display:grid;place-items:center;background:rgba(11,22,41,.85);border:1px solid rgba(51,204,255,.3);color:var(--accent);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s,visibility .3s,transform .3s var(--ease),border-color .3s,box-shadow .3s;
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--border-strong);box-shadow:0 0 18px -4px rgba(51,204,255,.5)}
.toast{
  position:fixed;left:50%;bottom:36px;z-index:200;transform:translate(-50%,16px);
  display:flex;align-items:center;gap:9px;padding:12px 22px;border-radius:12px;
  background:rgba(10,22,40,.96);border:1px solid rgba(52,211,153,.4);color:#c9f5e4;font-size:14px;
  box-shadow:0 16px 40px -12px rgba(0,0,0,.7);
  opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s,transform .3s var(--ease);
}
.toast.show{opacity:1;visibility:visible;transform:translate(-50%,0)}
.toast svg{color:var(--ok);flex:none}

/* ================= 桌面端与收尾 ================= */
@media (min-width:992px){
  .main-nav{display:flex}
  .header-cta{display:inline-flex}
  .hamburger{display:none}
  .mobile-nav{display:none}
  .section{padding:110px 0}
  .about-grid{grid-template-columns:1.05fr 1fr;gap:72px}
}
@media (max-width:420px){
  .hero-actions .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html.js .reveal{opacity:1;transform:none}
}