/* ============================================================
   同在科技 TONGZAITECH — 设计系统 v2
   参考 gethevn.com 配色 / bx.studio 排版
   极简 · 毛玻璃 · 蓝调 · 噪点颗粒 · 柔光渐变 · 科技未来
   ============================================================ */
:root{
  --bg:#F4F5FA;              /* 近白 · 冷调微带长春花 */
  --bg-2:#FCFCFE;
  --ink:#0B1220;            /* 近黑藏蓝 */
  --ink-soft:#454F60;
  --mist:#7C8696;
  --faint:#A9B2C0;
  --line:rgba(11,18,32,.08);
  --line-2:rgba(11,18,32,.05);

  --blue:#3358F4;           /* 提亮蓝(略柔) */
  --blue-deep:#2243CE;
  --blue-ink:#0E2A6B;
  --blue-50:#EDF1FF;
  --blue-100:#DBE3FF;
  --peri:#A9B8FF;           /* 长春花蓝光 */

  --glass:rgba(255,255,255,.55);
  --glass-2:rgba(255,255,255,.72);
  --glass-bd:rgba(255,255,255,.9);
  --glass-bd-2:rgba(255,255,255,.6);

  --sans:'Schibsted Grotesk','Noto Sans SC','PingFang SC','Microsoft YaHei',system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,'SF Mono',monospace;

  --maxw:1200px;
  --r-xl:30px;
  --r-lg:22px;
  --r-md:16px;
  --shadow-s:0 2px 10px rgba(11,18,32,.04);
  --shadow-m:0 16px 40px rgba(11,18,32,.07);
  --shadow-l:0 30px 80px rgba(11,18,32,.10);
  --glow:0 0 0 1px rgba(255,255,255,.5) inset, 0 1px 1px rgba(255,255,255,.7) inset;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}
body{
  font-family:var(--sans);color:var(--ink);line-height:1.7;font-weight:400;
  background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;position:relative;
}
/* 全局噪点颗粒 */
body::before{
  content:"";position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:.045;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px}
::selection{background:var(--blue);color:#fff}

/* ============ 柔光渐变球 ============ */
.glow{position:absolute;border-radius:50%;filter:blur(100px);opacity:.5;z-index:0;pointer-events:none}
.glow-blue{background:radial-gradient(circle,#AEC0FF 0%,rgba(174,192,255,0) 70%)}
.glow-peri{background:radial-gradient(circle,#CFC4FF 0%,rgba(207,196,255,0) 70%)}
.glow-cyan{background:radial-gradient(circle,#C2E4FF 0%,rgba(194,228,255,0) 70%)}

/* ============ 容器 ============ */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 32px;position:relative;z-index:2}
section{padding:108px 0;position:relative}
.sec-tight{padding:72px 0}

/* ============ 文字 ============ */
.eyebrow{
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--blue);display:inline-flex;align-items:center;gap:10px;margin-bottom:22px;font-weight:500;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue);box-shadow:0 0 10px rgba(47,107,255,.7)}
.eyebrow.center{display:flex;justify-content:center}
h1,h2,h3,h4{font-weight:700;letter-spacing:-.02em;line-height:1.12}
.display{font-family:'PingFang SC','Noto Sans SC',var(--sans);font-size:clamp(40px,5.6vw,76px);font-weight:200;letter-spacing:-.03em;line-height:1.06;text-wrap:balance}
.sec-title{font-family:'PingFang SC','Noto Sans SC',var(--sans);font-weight:200;font-size:clamp(30px,3.8vw,50px);line-height:1.14;letter-spacing:-.02em;max-width:34ch;text-wrap:balance}
.sec-title.wide{max-width:46ch}
.sec-lede{margin-top:20px;color:var(--ink-soft);max-width:60ch;font-size:17px;line-height:1.7;text-wrap:pretty}
.center-head{text-align:center;display:flex;flex-direction:column;align-items:center}
.center-head .sec-lede{margin-left:auto;margin-right:auto}
em.hl{font-style:normal;color:var(--blue)}
.grad-ink{background:linear-gradient(180deg,#0B1220 0%,#3A4A6B 130%);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 26px;border-radius:999px;
  font-size:15px;font-weight:500;cursor:pointer;border:0;font-family:var(--sans);white-space:nowrap;
  transition:transform .25s cubic-bezier(.2,.7,.3,1),box-shadow .25s,background .25s,color .25s;
}
.btn svg{width:15px;height:15px}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 8px 20px rgba(11,18,32,.18)}
.btn-primary:hover{background:var(--blue);transform:translateY(-2px);box-shadow:0 12px 28px rgba(47,107,255,.36)}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 8px 22px rgba(47,107,255,.3)}
.btn-blue:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 14px 32px rgba(47,107,255,.42)}
.btn-glass{
  background:var(--glass-2);color:var(--ink);border:1px solid var(--glass-bd);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-s);
}
.btn-glass:hover{background:#fff;transform:translateY(-2px);box-shadow:var(--shadow-m)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn-sm{padding:10px 18px;font-size:13.5px}
.btn-lg{padding:16px 32px;font-size:16px}

/* ============ 毛玻璃卡 ============ */
.glass{
  background:var(--glass);border:1px solid var(--glass-bd);border-radius:var(--r-lg);
  backdrop-filter:blur(20px) saturate(1.4);-webkit-backdrop-filter:blur(20px) saturate(1.4);
  box-shadow:var(--shadow-m),var(--glow);position:relative;
}
.glass-solid{background:var(--glass-2)}
.card-hover{transition:transform .35s cubic-bezier(.2,.7,.3,1),box-shadow .35s}
.card-hover:hover{transform:translateY(-6px);box-shadow:var(--shadow-l),var(--glow)}

/* ============ 导航 ============ */
.nav{position:sticky;top:0;z-index:200;transition:background .3s,box-shadow .3s,border-color .3s;border-bottom:1px solid transparent}
.nav.stuck{
  background:rgba(244,245,250,.72);backdrop-filter:blur(20px) saturate(1.4);-webkit-backdrop-filter:blur(20px) saturate(1.4);
  border-bottom:1px solid var(--line);
}
.nav-in{max-width:1280px;margin:0 auto;padding:0 32px;height:74px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;flex:0 0 auto;object-fit:contain;display:block;
}
.brand-txt{line-height:1.15}
.brand-cn{font-weight:700;font-size:16px;letter-spacing:0}
.brand-en{font-family:var(--mono);font-size:8.5px;letter-spacing:.3em;color:var(--mist);text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a:not(.nav-cta){
  font-size:14.5px;font-weight:500;color:var(--ink-soft);padding:9px 15px;border-radius:999px;
  transition:background .2s,color .2s;
}
.nav-links a:not(.nav-cta):hover{color:var(--ink);background:rgba(255,255,255,.7)}
.nav-links a[aria-current="page"]{color:var(--blue);background:rgba(255,255,255,.85);box-shadow:var(--shadow-s)}
.nav-cta{
  margin-left:10px;background:var(--ink);color:#fff!important;padding:10px 20px;border-radius:999px;
  font-size:14px;font-weight:500;transition:background .25s,transform .25s,box-shadow .25s;
}
.nav-cta:hover{background:var(--blue);transform:translateY(-1px);box-shadow:0 8px 20px rgba(47,107,255,.36)}
.nav-burger{display:none;background:none;border:0;cursor:pointer;width:42px;height:42px}
.nav-burger span{display:block;width:22px;height:2px;background:var(--ink);margin:5px auto;transition:.3s;border-radius:2px}

/* ============ HERO ============ */
.hero{padding:84px 0 64px;position:relative;overflow:hidden}
.hero .glow-1{width:760px;height:760px;top:-360px;left:50%;transform:translateX(-54%);opacity:.5}
.hero .glow-2{width:440px;height:440px;top:120px;right:-120px;opacity:.4}
.hero-inner{position:relative;z-index:2}
.hero-top{max-width:850px}
.hero h1{font-size:clamp(40px,6.2vw,82px)}
.hero-sub{margin-top:26px;font-size:18px;color:var(--ink-soft);max-width:54ch;text-wrap:pretty}
.hero-fine{margin-top:14px;font-size:14.5px;color:var(--mist);max-width:50ch}
.hero-actions{margin-top:34px;display:flex;gap:13px;flex-wrap:wrap}
.trust-bar{
  margin-top:40px;display:flex;gap:10px 26px;flex-wrap:wrap;align-items:center;
  font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--mist);
}
.trust-bar b{color:var(--ink-soft);font-weight:500}
.trust-bar .sep{width:4px;height:4px;border-radius:50%;background:var(--faint)}

/* 英雄视觉:玻璃浏览器窗口 + 构建动画 */
.hero-art{margin-top:60px;position:relative}
.browser{
  border-radius:18px;overflow:hidden;background:var(--glass-2);border:1px solid var(--glass-bd);
  backdrop-filter:blur(22px) saturate(1.4);-webkit-backdrop-filter:blur(22px) saturate(1.4);
  box-shadow:var(--shadow-l),var(--glow);
}
.browser-bar{height:46px;display:flex;align-items:center;gap:8px;padding:0 18px;border-bottom:1px solid var(--line-2);background:rgba(255,255,255,.4)}
.browser-bar i{width:11px;height:11px;border-radius:50%;background:#D2D8E2}
.browser-bar i:nth-child(1){background:#FF6159}.browser-bar i:nth-child(2){background:#FFC130}.browser-bar i:nth-child(3){background:#2ACB42}
.browser-url{
  margin-left:14px;flex:1;max-width:420px;height:26px;border-radius:8px;background:rgba(255,255,255,.65);border:1px solid var(--line-2);
  display:flex;align-items:center;padding:0 14px;font-family:var(--mono);font-size:11px;color:var(--mist);gap:8px;
}
.browser-url::before{content:"";width:8px;height:8px;border-radius:2px;border:1.5px solid var(--blue)}
.browser-body{position:relative;height:clamp(300px,42vw,500px);overflow:hidden;background:linear-gradient(160deg,#FBFCFE,#EEF3FB)}
/* 站点预览内容 */
.preview{position:absolute;inset:0;display:grid;grid-template-columns:200px 1fr;}
.pv-side{border-right:1px solid var(--line-2);padding:24px 18px;display:flex;flex-direction:column;gap:11px;background:rgba(255,255,255,.4)}
.pv-logo{width:74px;height:14px;border-radius:5px;background:var(--ink);opacity:.85}
.pv-nav{height:9px;border-radius:4px;background:var(--line);margin-top:6px}
.pv-nav.s{width:70%}.pv-nav.m{width:88%}
.pv-main{padding:30px 34px;position:relative}
.pv-hbar{height:15px;width:64%;border-radius:6px;background:linear-gradient(90deg,var(--blue),var(--peri))}
.pv-hbar.s{width:40%;margin-top:11px;height:11px;background:var(--line)}
.pv-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
.pv-card{height:96px;border-radius:12px;background:rgba(255,255,255,.7);border:1px solid var(--line-2);box-shadow:var(--shadow-s);position:relative;overflow:hidden}
.pv-card::after{content:"";position:absolute;left:14px;right:14px;bottom:14px;height:8px;border-radius:4px;background:var(--line)}
.pv-card::before{content:"";position:absolute;left:14px;top:14px;width:30px;height:30px;border-radius:8px;background:var(--blue-50)}
.pv-card:nth-child(2)::before{background:#EAF6FF}.pv-card:nth-child(3)::before{background:#F0EBFF}
.pv-img{margin-top:18px;height:120px;border-radius:14px;background:linear-gradient(135deg,#3F74FF,#9DB6FF 60%,#CFE0FF);position:relative;overflow:hidden;box-shadow:var(--shadow-m)}
.pv-img::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 80% at 15% 10%,rgba(255,255,255,.5),transparent 55%)}
/* 构建动画:线框→成品 */
.build .pv-hbar,.build .pv-card,.build .pv-img,.build .pv-logo,.build .pv-nav,.build .pv-side{
  animation:fillin .9s ease both;
}
@media (prefers-reduced-motion:no-preference){
  .wire .pv-hbar,.wire .pv-img{background:transparent!important;border:1.5px dashed var(--blue);}
  .wire .pv-card{background:transparent!important;border:1.5px dashed rgba(47,107,255,.5)}
  .wire .pv-card::before,.wire .pv-card::after{background:rgba(47,107,255,.18)!important}
}
@keyframes fillin{from{opacity:.2;transform:translateY(8px)}to{opacity:1;transform:none}}

/* 浮动玻璃标签 */
.float-chip{
  position:absolute;z-index:4;display:flex;align-items:center;gap:9px;padding:11px 16px;border-radius:14px;
  background:var(--glass-2);border:1px solid var(--glass-bd);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-m),var(--glow);font-size:13px;font-weight:500;
  animation:floaty 5s ease-in-out infinite;
}
.float-chip .d{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-size:13px;background:var(--blue-50);color:var(--blue);font-weight:700}
.fc-1{top:-22px;right:30px;animation-delay:0s}
.fc-2{bottom:34px;left:-26px;animation-delay:-1.5s}
.fc-3{bottom:-20px;right:90px;animation-delay:-3s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ============ 信任 logo 条 ============ */
.logos{padding:48px 0 8px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.logos .lab{text-align:center;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--mist);text-transform:uppercase;margin-bottom:26px}
.logo-row{display:flex;flex-wrap:wrap;justify-content:center;gap:14px 16px}
.logo-pill{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.08em;color:var(--ink-soft);
  padding:9px 18px;border-radius:999px;background:var(--glass);border:1px solid var(--glass-bd);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}

/* ============ 通用网格 ============ */
.grid{display:grid;gap:20px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;margin-bottom:52px}

/* ============ 服务卡 ============ */
.svc{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:52px}
.svc-card{padding:32px 30px;display:flex;flex-direction:column;min-height:240px;text-decoration:none}
.svc-card .ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(150deg,var(--blue-50),#fff);border:1px solid var(--glass-bd);color:var(--blue);
  box-shadow:var(--shadow-s);
}
.svc-card .ico svg{width:22px;height:22px}
.svc-card h3{font-size:20px;margin-bottom:9px}
.svc-card p{font-size:14.5px;color:var(--ink-soft);flex:1}
.svc-card .go{margin-top:18px;font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;color:var(--mist);text-transform:uppercase;display:inline-flex;align-items:center;gap:7px;transition:color .25s,gap .25s}
.svc-card:hover .go{color:var(--blue);gap:11px}

/* ============ 服务详情段 ============ */
.svc-detail{padding:104px 0;border-top:1px solid var(--line);position:relative;overflow:hidden}
.svc-detail .glow{width:500px;height:500px}
.sd-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.sd-num{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--blue);text-transform:uppercase}
.sd-h{font-family:'PingFang SC','Noto Sans SC',var(--sans);font-weight:200;font-size:clamp(26px,3vw,38px);margin:14px 0 16px;letter-spacing:-.015em;text-wrap:balance}
.sd-lede{color:var(--ink-soft);font-size:16px}
.sd-list{margin-top:26px;list-style:none}
.sd-list li{padding:13px 0;border-top:1px solid var(--line);display:flex;gap:13px;align-items:flex-start;font-size:14.5px;color:var(--ink-soft)}
.sd-list li::before{content:"";flex:0 0 18px;height:18px;margin-top:3px;border-radius:6px;background:var(--blue-50);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%232F6BFF' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}
.sd-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
.sd-tag{font-family:var(--mono);font-size:12px;border:1px solid var(--line);border-radius:999px;padding:6px 15px;color:var(--ink-soft);background:var(--glass)}
.sd-cases{margin-top:22px;font-size:13.5px;color:var(--mist)}
.sd-cases b{color:var(--ink-soft);font-weight:500}
.sd-visual{border-radius:var(--r-lg);overflow:hidden;min-height:340px;position:relative}

/* 代码窗(定制开发视觉) */
.code-win{border-radius:18px;overflow:hidden;box-shadow:var(--shadow-l);background:#0B1220}
.code-win .bar{height:42px;display:flex;align-items:center;gap:8px;padding:0 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.code-win .bar i{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.22)}
.code-win .bar i:nth-child(1){background:#FF6159}.code-win .bar i:nth-child(2){background:#FFC130}.code-win .bar i:nth-child(3){background:#2ACB42}
.code-win pre{margin:0;padding:26px 28px;font-family:var(--mono);font-size:12.5px;line-height:2;color:#9FB2D0;overflow-x:auto}
.code-win .c{color:#5A6B86}.code-win .g{color:#5BD6A0}.code-win .b{color:#7FA0FF}.code-win .y{color:#E6C56B}.code-win .p{color:#C79BFF}

/* ============ 数据条 ============ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{padding:34px 30px;text-align:left}
.stat b{font-size:clamp(38px,4vw,54px);font-weight:700;letter-spacing:-.03em;line-height:1;display:flex;align-items:baseline;gap:6px}
.stat b .u{font-size:20px;color:var(--blue);font-weight:600}
.stat b .star{color:var(--blue);font-size:22px;letter-spacing:1px}
.stat span{display:block;margin-top:14px;font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}

/* ============ 流程时间线 ============ */
.flow{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px}
.flow .node{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-soft);background:var(--glass);border:1px solid var(--glass-bd);border-radius:999px;padding:9px 16px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.flow .node b{font-family:var(--mono);font-size:11px;color:var(--blue)}
.flow .arr{color:var(--faint);align-self:center}

.steps{display:flex;flex-direction:column;gap:18px;margin-top:56px}
.step{display:grid;grid-template-columns:120px 1fr;gap:36px;padding:34px 38px;align-items:start}
.step .sn{font-family:var(--mono);font-size:13px;letter-spacing:.16em;color:var(--blue)}
.step .sn b{display:block;font-size:46px;font-weight:700;color:var(--ink);letter-spacing:-.03em;line-height:1;margin-top:8px;font-family:var(--sans)}
.step h3{font-size:23px;margin-bottom:12px}
.step p{color:var(--ink-soft);font-size:15px;max-width:64ch}
.step ul{margin-top:16px;list-style:none;display:flex;flex-direction:column;gap:9px}
.step ul li{font-size:14px;color:var(--ink-soft);padding-left:20px;position:relative}
.step ul li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--blue-100);border:1.5px solid var(--blue)}
.step .tip{margin-top:18px;font-size:13.5px;color:var(--ink-soft);background:var(--blue-50);border:1px solid var(--blue-100);border-radius:12px;padding:14px 18px}
.step .tip b{color:var(--blue-deep)}

/* ============ 案例 ============ */
.filterbar{display:flex;gap:9px;flex-wrap:wrap;margin:8px 0 12px}
.fbtn{
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--glass);color:var(--ink-soft);cursor:pointer;transition:.22s;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
.fbtn:hover{border-color:var(--ink);color:var(--ink)}
.fbtn.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.filter-meta{font-family:var(--mono);font-size:12px;color:var(--mist);margin-bottom:30px}

/* 精品大卡 */
.flag-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;margin-top:50px}
.flag{border-radius:var(--r-lg);overflow:hidden;display:block;position:relative;background:var(--glass);border:1px solid var(--glass-bd);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:var(--shadow-m),var(--glow);transition:transform .35s,box-shadow .35s}
.flag:hover{transform:translateY(-6px);box-shadow:var(--shadow-l),var(--glow)}
.flag .scr{height:240px;position:relative;overflow:hidden}
.flag .meta{padding:26px 28px 28px;display:flex;align-items:flex-end;justify-content:space-between;gap:18px}
.flag .meta .loc{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--blue);text-transform:uppercase}
.flag .meta h3{font-size:21px;margin:9px 0 7px}
.flag .meta p{font-size:14px;color:var(--ink-soft);max-width:42ch}
.flag .meta .arr{flex:0 0 42px;height:42px;border-radius:50%;background:#fff;border:1px solid var(--line);display:grid;place-items:center;box-shadow:var(--shadow-s);transition:.3s}
.flag:hover .meta .arr{background:var(--blue);color:#fff;border-color:var(--blue);transform:rotate(-45deg)}

/* 案例网格小卡 */
.work-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
.wcard{
  padding:24px 24px 22px;border-radius:var(--r-md);display:flex;flex-direction:column;gap:0;min-height:172px;
  background:var(--glass);border:1px solid var(--glass-bd);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-s);transition:transform .28s,box-shadow .28s,border-color .28s;
}
.wcard:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--blue-100)}
.wcard.hide{display:none}
.wcard .wtop{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.wcard .plat{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--blue);background:var(--blue-50);padding:4px 9px;border-radius:6px;white-space:nowrap}
.wcard h4{font-size:17px;margin:16px 0 0;letter-spacing:-.01em}
.wcard .ind{font-size:13px;color:var(--ink-soft);margin-top:6px}
.wcard .wfoot{margin-top:auto;padding-top:16px;display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:11px;color:var(--mist)}
.wcard .wfoot .geo{display:flex;align-items:center;gap:6px}
.wcard .lnk{color:var(--blue);transition:gap .2s}
.wcard .star{color:#E6A817}
.work-count{margin:34px 0 14px;font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--mist);text-transform:uppercase;display:flex;align-items:center;gap:12px}
.work-count::after{content:"";flex:1;height:1px;background:var(--line)}

/* ============ 评价 ============ */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:50px}
.rev{padding:32px 30px;display:flex;flex-direction:column}
.rev .stars{color:#E6A817;font-size:15px;letter-spacing:3px;margin-bottom:16px}
.rev p{font-size:15px;color:var(--ink);flex:1;line-height:1.7;text-wrap:pretty}
.rev .who{margin-top:24px;padding-top:18px;border-top:1px solid var(--line);display:flex;align-items:center;gap:12px}
.rev .av{width:38px;height:38px;border-radius:50%;background:linear-gradient(150deg,var(--blue),var(--peri));color:#fff;display:grid;place-items:center;font-weight:700;font-size:15px;flex:0 0 auto}
.rev .who b{display:block;font-size:13.5px}
.rev .who span{font-family:var(--mono);font-size:10.5px;color:var(--mist);letter-spacing:.06em}

/* ============ 价格卡 ============ */
.price-group{margin-top:64px}
.pg-head{max-width:70ch;margin-bottom:34px}
.pg-head h3{font-size:25px;margin-bottom:12px;display:flex;align-items:center;gap:12px}
.pg-head h3 .gi{font-family:var(--mono);font-size:12px;color:var(--blue);background:var(--blue-50);padding:4px 11px;border-radius:7px;letter-spacing:.06em}
.pg-head p{color:var(--ink-soft);font-size:15px}
.plans{display:grid;gap:18px}
.plans.p4{grid-template-columns:repeat(4,1fr)}
.plans.p3{grid-template-columns:repeat(3,1fr)}
.plan{padding:32px 28px;display:flex;flex-direction:column;position:relative;border-radius:var(--r-lg)}
.plan.hot{border:1.5px solid var(--blue);box-shadow:0 20px 50px rgba(47,107,255,.16),var(--glow)}
.plan .pop{position:absolute;top:-12px;left:28px;background:var(--blue);color:#fff;font-size:11.5px;font-weight:500;padding:4px 14px;border-radius:999px;letter-spacing:.04em;box-shadow:0 6px 14px rgba(47,107,255,.4)}
.plan .pname{font-size:18px;font-weight:700}
.plan .price{margin:20px 0 4px;font-weight:700;font-size:36px;letter-spacing:-.03em;line-height:1}
.plan .price.ask{font-size:22px;color:var(--blue)}
.plan .pfor{font-size:13px;color:var(--mist);min-height:38px}
.plan ul{list-style:none;margin:22px 0 26px;flex:1;display:flex;flex-direction:column;gap:0}
.plan li{font-size:13.5px;color:var(--ink-soft);padding:9px 0;border-top:1px solid var(--line-2);display:flex;gap:9px;align-items:flex-start}
.plan li::before{content:"";flex:0 0 15px;height:15px;margin-top:2px;border-radius:5px;background:var(--blue-50);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%232F6BFF' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:center}
.plan li.add::before{background:#FFF2DC;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%23E6A817' stroke-width='3.5' stroke-linecap='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E")}
.plan li.add{color:var(--ink)}
.plan .btn{justify-content:center;width:100%}
.plan-note{margin-top:18px;font-size:13px;color:var(--mist);font-style:italic}

/* ============ 对比表 ============ */
.compare{margin-top:30px;border-radius:var(--r-lg);overflow:hidden;background:var(--glass);border:1px solid var(--glass-bd);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);box-shadow:var(--shadow-m)}
.compare table{width:100%;border-collapse:collapse;font-size:14.5px}
.compare th,.compare td{padding:16px 24px;text-align:left;border-bottom:1px solid var(--line-2)}
.compare thead th{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);font-weight:500}
.compare thead th.us{color:var(--blue)}
.compare tr:last-child td{border-bottom:0}
.compare td:first-child,.compare th:first-child{color:var(--ink-soft);width:30%}
.compare .us{background:rgba(47,107,255,.05);font-weight:500}
.compare .yes{color:var(--blue);font-weight:600}
.compare .no{color:var(--faint)}

/* ============ FAQ ============ */
.faq-wrap{max-width:820px;margin:50px auto 0}
.faq-cat{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);margin:40px 0 6px}
.faq{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:24px 0;display:flex;justify-content:space-between;align-items:center;gap:24px;font-size:17px;font-weight:600}
.faq summary::-webkit-details-marker{display:none}
.faq summary .pm{flex:0 0 32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:18px;font-weight:400;
  background:var(--glass-2);border:1px solid var(--line);transition:.3s;color:var(--ink)}
.faq[open] summary .pm{background:var(--blue);color:#fff;border-color:var(--blue);transform:rotate(45deg)}
.faq .ans{padding:0 56px 24px 0;font-size:15px;color:var(--ink-soft);line-height:1.75}

/* ============ 表单 ============ */
.form-card{padding:42px 40px}
.field{margin-bottom:20px}
.field label,.field > span.lab{display:block;font-size:13.5px;font-weight:500;margin-bottom:9px}
.field .req{color:var(--blue)}
.field input,.field select,.field textarea{
  width:100%;background:rgba(255,255,255,.8);border:1px solid var(--line);border-radius:12px;
  padding:13px 15px;color:var(--ink);font-family:var(--sans);font-size:14.5px;transition:border .22s,box-shadow .22s;
}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(47,107,255,.12);background:#fff}
.field textarea{resize:vertical;min-height:120px}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.choice-grid{display:flex;flex-wrap:wrap;gap:9px}
.choice{position:relative}
.choice input{position:absolute;opacity:0;inset:0;cursor:pointer}
.choice span{display:block;font-size:13.5px;padding:10px 16px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.7);cursor:pointer;transition:.2s;color:var(--ink-soft)}
.choice input:checked + span{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 6px 16px rgba(47,107,255,.3)}
.choice input:focus-visible + span{outline:2px solid var(--blue);outline-offset:2px}
.form-note{margin-top:14px;font-size:12.5px;color:var(--mist);font-family:var(--mono);line-height:1.6}

/* 多步进度 */
.stepper{display:flex;gap:8px;margin-bottom:34px}
.stepper .sdot{flex:1;display:flex;flex-direction:column;gap:9px}
.stepper .bar{height:4px;border-radius:3px;background:var(--line);transition:background .3s}
.stepper .sdot.active .bar,.stepper .sdot.done .bar{background:var(--blue)}
.stepper .slab{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--mist)}
.stepper .sdot.active .slab{color:var(--blue)}
.fstep{display:none}
.fstep.show{display:block;animation:fadeUp .4s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.step-nav{display:flex;justify-content:space-between;margin-top:28px;gap:14px}

/* 联系信息 */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;margin-top:56px}
.c-rows{display:flex;flex-direction:column;gap:14px;margin-top:30px}
.c-row{display:flex;gap:15px;align-items:center;padding:18px 20px;border-radius:var(--r-md);background:var(--glass);border:1px solid var(--glass-bd);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.c-row .ci{flex:0 0 42px;height:42px;border-radius:12px;background:var(--blue-50);color:var(--blue);display:grid;place-items:center}
.c-row .ci svg{width:19px;height:19px}
.c-row b{display:block;font-size:14.5px}
.c-row span{font-size:12.5px;color:var(--mist);font-family:var(--mono)}
.qr{margin-top:20px;padding:22px;display:flex;gap:18px;align-items:center;border-radius:var(--r-md);background:var(--glass)}
.qr-img{width:88px;height:88px;border-radius:12px;background:#fff;border:1px solid var(--line);display:grid;place-items:center;flex:0 0 auto;
  background-image:repeating-linear-gradient(0deg,#0B1220 0 4px,transparent 4px 8px),repeating-linear-gradient(90deg,#0B1220 0 4px,transparent 4px 8px);background-size:8px 8px;background-blend-mode:multiply}
.qr p{font-size:13px;color:var(--ink-soft)}

/* ============ 博客 ============ */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:50px}
.post{border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;background:var(--glass);border:1px solid var(--glass-bd);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);box-shadow:var(--shadow-s);transition:transform .3s,box-shadow .3s}
.post:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.post .cover{height:170px;position:relative;overflow:hidden}
.post .cover .cat{position:absolute;top:14px;left:14px;font-family:var(--mono);font-size:10.5px;letter-spacing:.08em;color:#fff;background:rgba(11,18,32,.55);padding:5px 11px;border-radius:999px;backdrop-filter:blur(8px)}
.post .pbody{padding:24px 26px 26px;display:flex;flex-direction:column;flex:1}
.post h3{font-size:18px;line-height:1.35;margin-bottom:10px}
.post p{font-size:13.8px;color:var(--ink-soft);flex:1}
.post .pmeta{margin-top:20px;font-family:var(--mono);font-size:11px;color:var(--mist);letter-spacing:.04em}
.cover-g1{background:linear-gradient(135deg,#3F74FF,#9DB6FF)}
.cover-g2{background:linear-gradient(135deg,#1B3FBF,#6E97FF)}
.cover-g3{background:linear-gradient(135deg,#7C5BFF,#B8A6FF)}
.cover-g4{background:linear-gradient(135deg,#1FA8D8,#8FD7FF)}
.cover-g5{background:linear-gradient(135deg,#0E2A6B,#3F74FF)}
.cover-g6{background:linear-gradient(135deg,#2F6BFF,#A6C2FF)}
.cover-g7{background:linear-gradient(135deg,#4A5BD8,#9DB6FF)}
.post .cover::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 90% at 12% 8%,rgba(255,255,255,.4),transparent 55%)}

/* ============ CTA 横幅 ============ */
.cta{position:relative;overflow:hidden;border-radius:var(--r-xl);padding:84px 56px;text-align:center;
  background:linear-gradient(150deg,#0B1220 0%,#16224A 55%,#1B3FBF 130%);box-shadow:var(--shadow-l)}
.cta .glow{width:560px;height:380px;filter:blur(70px);opacity:.5}
.cta .glow-1{top:-140px;left:8%;background:radial-gradient(circle,#3F74FF 0%,transparent 70%)}
.cta .glow-2{bottom:-160px;right:6%;background:radial-gradient(circle,#7C5BFF 0%,transparent 70%)}
.cta .in{position:relative;z-index:2;max-width:640px;margin:0 auto}
.cta h2{font-family:'PingFang SC','Noto Sans SC',var(--sans);font-weight:200;color:#fff;font-size:clamp(30px,4vw,48px);letter-spacing:-.02em;line-height:1.14;text-wrap:balance}
.cta p{color:rgba(255,255,255,.72);margin-top:18px;font-size:17px}
.cta .acts{margin-top:34px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta .btn-glass{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.24);color:#fff}
.cta .btn-glass:hover{background:rgba(255,255,255,.2)}
.cta .fine{margin-top:20px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.5);text-transform:uppercase}

/* ============ 子页头 ============ */
.phead{padding:84px 0 0;position:relative;overflow:hidden}
.phead .glow-1{width:620px;height:520px;top:-280px;left:46%;transform:translateX(-50%);opacity:.42}
.phead .display{font-size:clamp(36px,5vw,68px);max-width:20ch}
.phead .sec-lede{font-size:17.5px}
.crumbs{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--mist);margin-bottom:24px;display:flex;gap:9px;align-items:center}
.crumbs a:hover{color:var(--blue)}
.crumbs .sep{color:var(--faint)}

/* ============ 页脚 ============ */
footer{border-top:1px solid var(--line);padding:72px 0 38px;position:relative;overflow:hidden;background:linear-gradient(180deg,transparent,rgba(255,255,255,.4))}
.footer-glow{width:700px;height:400px;bottom:-280px;left:50%;transform:translateX(-50%);filter:blur(90px);opacity:.3}
.f-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:44px}
.f-brand p{font-size:14px;margin-top:18px;max-width:34ch;color:var(--ink-soft)}
.f-brand .fcerts{margin-top:22px;display:flex;flex-wrap:wrap;gap:8px}
.f-brand .fcerts span{font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;color:var(--ink-soft);border:1px solid var(--line);border-radius:999px;padding:5px 12px;background:var(--glass)}
.f-col h5{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--mist);text-transform:uppercase;margin-bottom:18px}
.f-col a{display:block;font-size:14px;padding:5px 0;color:var(--ink-soft);transition:color .2s}
.f-col a:hover{color:var(--blue)}
.f-bottom{margin-top:54px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-family:var(--mono);font-size:11.5px;color:var(--mist);letter-spacing:.03em}

/* ============ 浮现动画 ============ */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.07s}.reveal.d2{transition-delay:.14s}.reveal.d3{transition-delay:.21s}.reveal.d4{transition-delay:.28s}

/* ============ 响应式 ============ */
@media(max-width:1080px){
  .svc,.g3,.g4,.stats,.rev-grid,.work-grid,.blog-grid{grid-template-columns:repeat(2,1fr)}
  .sd-grid{grid-template-columns:1fr;gap:38px}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .flag-grid{grid-template-columns:1fr}
  .plans.p4{grid-template-columns:repeat(2,1fr)}
  .f-top{grid-template-columns:1fr 1fr}
  .preview{grid-template-columns:1fr}.pv-side{display:none}
}
@media(max-width:760px){
  .wrap{padding:0 20px}
  section{padding:72px 0}
  .nav-in{padding:0 18px;height:64px}
  .nav-links{position:absolute;top:64px;left:0;right:0;background:rgba(244,245,250,.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    flex-direction:column;align-items:stretch;gap:2px;padding:14px 18px 22px;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a:not(.nav-cta){padding:13px 8px;font-size:16px}
  .nav-cta{margin:10px 0 0;text-align:center}
  .nav-burger{display:block}
  .g2,.g3,.g4,.svc,.stats,.rev-grid,.work-grid,.blog-grid,.flag-grid,.plans.p4,.plans.p3,.frow,.choice-grid{grid-template-columns:1fr}
  .step{grid-template-columns:1fr;gap:14px}
  .step .sn b{font-size:36px}
  .f-top{grid-template-columns:1fr}
  .cta{padding:60px 28px}
  .form-card{padding:30px 24px}
  .compare{overflow-x:auto}.compare table{min-width:540px}
  .hero-art .float-chip{display:none}
  .head-row{margin-bottom:36px}
}

/* ============ 新增组件:Legend 认证锁定块 ============ */
.legend-lockup{
  margin-top:28px;display:inline-flex;align-items:center;gap:15px;padding:12px 22px 12px 14px;
  border-radius:18px;background:var(--glass-2);border:1px solid var(--glass-bd);
  backdrop-filter:blur(16px) saturate(1.4);-webkit-backdrop-filter:blur(16px) saturate(1.4);
  box-shadow:var(--shadow-m),var(--glow);transition:transform .25s,box-shadow .25s;
}
.legend-lockup:hover{transform:translateY(-2px);box-shadow:var(--shadow-l),var(--glow)}
.legend-lockup img{width:66px;height:66px;flex:0 0 auto;border-radius:50%}
.legend-lockup .ll-txt{display:flex;flex-direction:column;line-height:1.35}
.legend-lockup .ll-txt b{font-size:15px;font-weight:600;letter-spacing:-.01em}
.legend-lockup .ll-txt span{font-size:12.5px;color:var(--ink-soft)}

/* ============ 新增组件:页脚微信二维码 ============ */
.f-wechat{margin-top:22px;display:flex;align-items:center;gap:14px}
.f-wechat img{width:88px;height:88px;flex:0 0 auto;border-radius:12px;background:#fff;padding:5px;border:1px solid var(--line);box-shadow:var(--shadow-s)}
.f-wechat div{display:flex;flex-direction:column;line-height:1.4}
.f-wechat b{font-size:13.5px;font-weight:600}
.f-wechat span{font-family:var(--mono);font-size:12px;color:var(--mist);letter-spacing:.04em}

/* ============ 手机版深度优化 ============ */
@media(max-width:760px){
  body{padding:6px}
  .display{font-size:clamp(34px,8.5vw,46px);line-height:1.12}
  .sec-title{font-size:clamp(26px,6.6vw,34px)}
  .sec-lede{font-size:15.5px}
  .hero{padding:48px 0 44px}
  .hero h1{font-size:clamp(34px,9vw,48px)}
  .hero-sub{font-size:16px;margin-top:20px}
  .hero-actions{margin-top:26px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
  .btn-lg{padding:14px 22px;font-size:15px}
  .hero-art{margin-top:40px}
  .legend-lockup{margin-top:22px;width:100%;padding:12px 16px 12px 12px}
  .legend-lockup img{width:54px;height:54px}
  .trust-bar{margin-top:28px;gap:8px 16px;font-size:11.5px}
  .eyebrow{margin-bottom:18px;font-size:10.5px}
  .phead{padding:56px 0 0}
  .phead .display{font-size:clamp(32px,8.4vw,46px)}
  .crumbs{margin-bottom:18px}
  .head-row{flex-direction:column;align-items:flex-start;gap:18px}
  .center-head{text-align:left;align-items:flex-start}
  .center-head .eyebrow{justify-content:flex-start}
  .stat{padding:26px 24px}
  .stat b{font-size:clamp(34px,9vw,44px)}
  .svc-card{min-height:auto;padding:28px 24px}
  .flag .scr{height:190px}
  .flag .meta{padding:22px 22px 24px}
  .filterbar{flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px;margin:8px -20px 12px;padding-left:20px;padding-right:20px;scrollbar-width:none}
  .filterbar::-webkit-scrollbar{display:none}
  .fbtn{flex:0 0 auto;white-space:nowrap}
  .plan{padding:28px 24px}
  .step{padding:28px 24px}
  .steps{gap:14px}
  .flow{gap:8px}
  .flow .node{font-size:12.5px;padding:8px 13px}
  .flow .arr{display:none}
  .quote,.svc-detail,.cta .in{text-align:left}
  .contact-grid{gap:30px}
  .qr{flex-direction:column;text-align:center}
  .stepper{gap:5px}
  .stepper .slab{font-size:9.5px}
  .f-wechat img{width:84px;height:84px}
  .f-bottom{flex-direction:column;gap:8px;font-size:10.5px}
  .legend-lockup .ll-txt b{font-size:14px}
  .cta h2{font-size:clamp(26px,7vw,34px)}
  .cta p{font-size:15.5px}
}
@media(max-width:380px){
  .display,.hero h1{font-size:clamp(30px,9vw,38px)}
  .brand-cn{font-size:15px}
  .nav-in{gap:10px}
}