/* ============================================================
   全球社媒营销矩阵 · 科技蓝主题（浅色版）
   公共样式  css/style.css
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root{
  --bg:#eef3fb;
  --bg-2:#ffffff;
  --bg-3:#f5f8fc;
  --blue:#2b7fff;
  --blue-2:#1e5fd6;
  --cyan:#0aa6d8;
  --cyan-soft:#0a7cc4;
  --text:#0f1e3d;
  --text-2:#3a4d75;
  --muted:#7b8aa8;
  --line:rgba(43,127,255,.22);
  --card:#ffffff;
  --card-2:#f6f9fd;
  --glow:0 0 24px rgba(43,127,255,.22);
  --radius:16px;
  --header-h:72px;
  --maxw:1240px;
  --grad:linear-gradient(135deg,#2b7fff 0%,#19b9ff 55%,#0aa6d8 100%);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 基础重置 ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI","Microsoft YaHei","PingFang SC",system-ui,-apple-brand,Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:rgba(43,127,255,.22)}

/* ---------- 全局背景：网格 + 光晕 ---------- */
body::before{
  content:"";
  position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(900px 500px at 80% -10%,rgba(43,127,255,.18),transparent 60%),
    radial-gradient(800px 600px at -10% 20%,rgba(25,185,255,.10),transparent 55%),
    radial-gradient(700px 500px at 50% 110%,rgba(30,95,214,.10),transparent 60%),
    linear-gradient(180deg,#eef3fb 0%,#e6eef9 45%,#eef3fb 100%);
}
body::after{
  content:"";
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(43,127,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(43,127,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 80%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 80%);
}

.container{width:min(var(--maxw),92%);margin:0 auto}

/* ---------- 顶部导航 ---------- */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  transition:background .35s var(--ease),box-shadow .35s var(--ease),border-color .35s;
  border-bottom:1px solid transparent;
}
.header.scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line);
  box-shadow:0 8px 30px rgba(43,127,255,.12);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:100%;position:relative}

.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.5px;white-space:nowrap;color:var(--text)}
.logo .logo-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:var(--grad);
  display:grid;place-items:center;
  box-shadow:0 0 18px rgba(43,127,255,.35),inset 0 0 10px rgba(255,255,255,.35);
  position:relative;
}
.logo .logo-mark svg{width:22px;height:22px}
.logo b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.logo > span{color:var(--cyan-soft);font-size:12px;font-weight:600;letter-spacing:2px;display:block;margin-top:-4px}

/* 弧线菜单 */
.menu{position:relative}
.menu svg.arc{
  position:absolute;left:0;right:0;bottom:2px;width:100%;height:26px;
  pointer-events:none;overflow:visible;
}
.menu svg.arc path{fill:none;stroke-width:1.6;stroke-linecap:round}
.menu ul{display:flex;align-items:center;gap:4px;position:relative;z-index:2}
.menu li{position:relative}
.menu a{
  display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:10px 14px 12px;
  font-size:14.5px;font-weight:600;color:var(--text-2);
  border-radius:12px;position:relative;
  transition:color .3s;
}
.menu a .node{
  width:7px;height:7px;border-radius:50%;
  background:rgba(43,127,255,.3);
  box-shadow:0 0 0 0 rgba(43,127,255,.5);
  transition:.35s var(--ease);
}
.menu a:hover,.menu a.active{color:var(--blue)}
.menu a:hover .node,.menu a.active .node{
  background:var(--blue);
  box-shadow:0 0 10px 2px rgba(43,127,255,.6),0 0 0 4px rgba(43,127,255,.12);
  transform:scale(1.15);
}
.menu a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:22px;height:3px;border-radius:3px;
  background:var(--grad);
  box-shadow:0 0 10px rgba(43,127,255,.6);
}

/* 汉堡按钮 */
.burger{display:none;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);position:relative;z-index:120;background:rgba(255,255,255,.6)}
.burger span{position:absolute;left:11px;right:11px;height:2px;background:var(--blue);border-radius:2px;transition:.35s var(--ease)}
.burger span:nth-child(1){top:14px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:28px}
.burger.open span:nth-child(1){top:21px;transform:rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){top:21px;transform:rotate(-45deg)}

/* 移动端菜单面板 */
.mobile-panel{
  position:fixed;inset:0;z-index:110;
  background:rgba(241,246,253,.97);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  display:flex;flex-direction:column;justify-content:center;
  padding:0 12%;
  clip-path:circle(0% at calc(100% - 44px) 36px);
  transition:clip-path .55s var(--ease);
  pointer-events:none;
}
.mobile-panel.open{clip-path:circle(150% at calc(100% - 44px) 36px);pointer-events:auto}
/* 关闭按钮 */
.mobile-panel .menu-close{
  position:absolute;top:22px;right:22px;
  width:46px;height:46px;border-radius:12px;
  border:1px solid rgba(43,127,255,.4);
  background:rgba(43,127,255,.08);
  display:grid;place-items:center;color:var(--blue);
  z-index:120;
  opacity:0;transform:scale(.6) rotate(-90deg);
  transition:.45s var(--ease) .25s;
}
.mobile-panel.open .menu-close{opacity:1;transform:none}
.mobile-panel .menu-close:hover{background:rgba(43,127,255,.18);box-shadow:var(--glow)}
.mobile-panel .menu-close svg{width:22px;height:22px}
.mobile-panel .menu-close span{
  position:absolute;right:56px;white-space:nowrap;
  font-size:13px;color:var(--cyan-soft);font-weight:600;
  opacity:0;transition:.3s;
}
.mobile-panel .menu-close:hover span{opacity:1}
.mobile-panel a{
  font-size:26px;font-weight:700;color:var(--text-2);
  padding:14px 0;border-bottom:1px dashed rgba(43,127,255,.22);
  display:flex;align-items:center;gap:14px;
  opacity:0;transform:translateX(40px);
  transition:.45s var(--ease);
}
.mobile-panel a::before{content:"";width:10px;height:10px;border-radius:2px;background:var(--grad);transform:rotate(45deg);flex:none;box-shadow:0 0 10px rgba(43,127,255,.5)}
.mobile-panel.open a{opacity:1;transform:none}
.mobile-panel.open a:nth-child(1){transition-delay:.08s}
.mobile-panel.open a:nth-child(2){transition-delay:.14s}
.mobile-panel.open a:nth-child(3){transition-delay:.2s}
.mobile-panel.open a:nth-child(4){transition-delay:.26s}
.mobile-panel.open a:nth-child(5){transition-delay:.32s}
.mobile-panel.open a:nth-child(6){transition-delay:.38s}
.mobile-panel.open a:nth-child(7){transition-delay:.44s}
.mobile-panel a.active,.mobile-panel a:hover{color:var(--blue)}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 30px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.5px;
  position:relative;overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 28px rgba(43,127,255,.35)}
.btn-primary::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.55) 50%,transparent 70%);
  transform:translateX(-120%);
  transition:transform .8s;
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 38px rgba(43,127,255,.45)}
.btn-primary:hover::before{transform:translateX(120%)}
.btn-ghost{border:1px solid rgba(43,127,255,.55);color:var(--blue);background:rgba(43,127,255,.06)}
.btn-ghost:hover{background:rgba(43,127,255,.16);box-shadow:var(--glow);transform:translateY(-3px)}

/* ---------- Hero ---------- */
.hero{padding:calc(var(--header-h) + 70px) 0 90px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero .eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 16px;border-radius:999px;
  border:1px solid var(--line);
  background:rgba(43,127,255,.08);
  font-size:13px;color:var(--blue);font-weight:600;letter-spacing:1px;
  margin-bottom:24px;
}
.hero .eyebrow .pulse{width:8px;height:8px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 0 rgba(43,127,255,.7);animation:pulse 2s infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(43,127,255,.6)}
  70%{box-shadow:0 0 0 12px rgba(43,127,255,0)}
  100%{box-shadow:0 0 0 0 rgba(43,127,255,0)}
}
.hero h1{
  font-size:clamp(30px,4.2vw,52px);
  line-height:1.22;font-weight:900;letter-spacing:.5px;
  margin-bottom:22px;color:var(--text);
}
.hero h1 .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 0 40px rgba(43,127,255,.18)}
.hero p.lead{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:34px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:44px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap}
.hero-stats .num{font-size:30px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats .lbl{font-size:13px;color:var(--muted);margin-top:-2px}

/* Hero 视觉图 */
.hero-visual{position:relative}
.hero-frame{
  position:relative;border-radius:22px;overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 30px 80px rgba(43,127,255,.18),0 0 60px rgba(43,127,255,.08);
  aspect-ratio:16/11;
  background:linear-gradient(160deg,#d6e4fb,#c4d8f4);
}
.hero-frame img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease)}
.hero-frame:hover img{transform:scale(1.06)}
.hero-frame::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(255,255,255,.4));
  pointer-events:none;
}
.hero-frame .corner{position:absolute;width:22px;height:22px;border:2px solid var(--blue);opacity:.85;z-index:2}
.hero-frame .corner.tl{top:12px;left:12px;border-right:none;border-bottom:none}
.hero-frame .corner.tr{top:12px;right:12px;border-left:none;border-bottom:none}
.hero-frame .corner.bl{bottom:12px;left:12px;border-right:none;border-top:none}
.hero-frame .corner.br{bottom:12px;right:12px;border-left:none;border-top:none}
.float-chip{
  position:absolute;z-index:3;
  display:flex;align-items:center;gap:10px;
  padding:11px 16px;border-radius:14px;
  background:rgba(255,255,255,.92);
  border:1px solid var(--line);
  backdrop-filter:blur(10px);
  font-size:13.5px;font-weight:700;color:var(--text);
  box-shadow:0 12px 30px rgba(43,127,255,.18);
  animation:floaty 5s ease-in-out infinite;
}
.float-chip .dot{width:9px;height:9px;border-radius:50%;background:var(--blue);box-shadow:0 0 10px var(--blue)}
.float-chip.c1{top:8%;left:-6%;animation-delay:.2s}
.float-chip.c2{bottom:12%;right:-5%;animation-delay:1.4s}
.float-chip.c3{bottom:-5%;left:12%;animation-delay:2.4s}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}

/* ---------- 通用区块 ---------- */
.section{padding:88px 0;position:relative}
.section-head{text-align:center;max-width:760px;margin:0 auto 56px}
.section-head .en{
  font-size:13px;font-weight:800;letter-spacing:4px;text-transform:uppercase;
  color:transparent;background:var(--grad);-webkit-background-clip:text;background-clip:text;
}
.section-head h2{font-size:clamp(24px,3vw,38px);font-weight:900;margin:10px 0 14px;line-height:1.3;color:var(--text)}
.section-head p{color:var(--text-2);font-size:16px}
.head-bar{width:74px;height:4px;border-radius:4px;background:var(--grad);margin:18px auto 0;box-shadow:0 0 16px rgba(43,127,255,.45);position:relative;overflow:hidden}
.head-bar::after{content:"";position:absolute;inset:0;width:30px;background:linear-gradient(90deg,transparent,#fff,transparent);animation:slide 2.4s infinite}
@keyframes slide{0%{transform:translateX(-40px)}100%{transform:translateX(90px)}}

/* ---------- 卡片网格 ---------- */
.grid{display:grid;gap:24px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}

.card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:30px 26px;
  overflow:hidden;
  transition:transform .4s var(--ease),border-color .4s,box-shadow .4s;
  box-shadow:0 6px 20px rgba(43,127,255,.06);
}
.card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(43,127,255,.08),transparent 45%);
  opacity:0;transition:opacity .4s;
}
.card::after{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:var(--grad);
  transform:scaleX(0);transform-origin:left;
  transition:transform .5s var(--ease);
}
.card:hover{transform:translateY(-8px);border-color:rgba(43,127,255,.5);box-shadow:0 22px 50px rgba(43,127,255,.18),0 0 30px rgba(43,127,255,.12)}
.card:hover::before{opacity:1}
.card:hover::after{transform:scaleX(1)}
.card .icoindex{
  width: 260px; height: 120px;
  border-radius:14px;
  display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(145deg,rgba(43,127,255,.2),rgba(25,185,255,.1));
  border:1px solid rgba(43,127,255,.3);
  color:var(--blue);
  transition:.4s var(--ease);
}
.card .icoindex svg{width:240px;height:120px}
.card .ico{
  border-radius:14px;
  display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(145deg,rgba(43,127,255,.2),rgba(25,185,255,.1));
  border:1px solid rgba(43,127,255,.3);
  color:var(--blue);
  transition:.4s var(--ease);
}
.card .ico svg{width:240px;height:120px}
.card:hover .ico{box-shadow:var(--glow);transform:rotateY(180deg)}
.card h3{font-size:19px;font-weight:800;margin-bottom:10px;position:relative;color:var(--text)}
.card p{color:var(--text-2);font-size:14.5px;position:relative}
.card .idx{
  position:absolute;top:20px;right:36px;
  font-size:44px;font-weight:900;
  color:rgba(43,127,255,.14);
  font-family:Arial,sans-serif;
}

/* ---------- 平台卡（首页） ---------- */
.platform-card{display:flex;flex-direction:column;height:100%}
.platform-card .brand-ico{
  border-radius:16px;
  display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(145deg,#e3edfb,#d4e2f4);
  border:1px solid rgba(43,127,255,.35);
  transition:.4s var(--ease);
}
.platform-card .brand-ico svg{width:200px;height:200px;fill:var(--blue)}
.platform-card:hover .brand-ico{box-shadow:0 0 26px rgba(43,127,255,.35);transform:translateY(-4px) scale(1.05)}
.platform-card .tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 20px}
.platform-card .tags i{
  font-style:normal;font-size:12px;color:var(--cyan-soft);
  border:1px solid var(--line);border-radius:999px;padding:3px 11px;
  background:rgba(43,127,255,.07);
}
.platform-card .more{
  margin-top:auto;display:inline-flex;align-items:center;gap:7px;
  color:var(--blue);font-weight:700;font-size:14px;
}
.platform-card .more svg{width:16px;height:16px;transition:transform .3s}
.platform-card:hover .more svg{transform:translateX(6px)}

/* ---------- 视频播放区 ---------- */
.video-section{background:linear-gradient(180deg,rgba(43,127,255,.04),rgba(43,127,255,.08) 30%,rgba(43,127,255,.04))}
.video-wrap{
  margin:0 auto;
  border-radius:5px;
  overflow:hidden;
  box-shadow:0 30px 90px rgba(43,127,255,.22),0 0 70px rgba(43,127,255,.12);
}
.video-wrap::before,.video-wrap::after{
  content:"";position:absolute;width:26px;height:26px;z-index:3;pointer-events:none;
  border:2px solid var(--cyan);
}
.video-wrap::before{top:10px;left:10px;border-right:none;border-bottom:none}
.video-wrap::after{bottom:10px;right:10px;border-left:none;border-top:none}
.video-wrap video{width:100%;display:block;aspect-ratio:16/9;background:#000}
.video-side{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:22px;max-width:980px;margin-left:auto;margin-right:auto}
.video-side .mini{
  display:flex;gap:14px;align-items:center;
  background:var(--card);border:1px solid var(--line);
  border-radius:14px;padding:16px 20px;
  box-shadow:0 6px 16px rgba(43,127,255,.06);
}
.video-side .mini .mi{
  width:42px;height:42px;border-radius:11px;flex:none;
  display:grid;place-items:center;color:var(--blue);
  background:rgba(43,127,255,.1);border:1px solid var(--line);
}
.video-side .mini .mi svg{width:21px;height:21px}
.video-side .mini b{display:block;font-size:15px;color:var(--text)}
.video-side .mini span{font-size:13px;color:var(--muted)}

/* ---------- 清单 / 标签 ---------- */
.check-list{display:grid;gap:14px}
.check-list li{
  display:flex;gap:13px;align-items:flex-start;
  background:var(--card);border:1px solid var(--line);
  border-radius:13px;padding:16px 20px;
  font-size:15px;color:var(--text-2);
  transition:.35s var(--ease);
  box-shadow:0 4px 14px rgba(43,127,255,.04);
}
.check-list li:hover{border-color:rgba(43,127,255,.45);transform:translateX(6px);color:var(--text)}
.check-list .ck{
  flex:none;width:23px;height:23px;border-radius:50%;margin-top:2px;
  display:grid;place-items:center;
  background:var(--grad);color:#fff;
  box-shadow:0 0 12px rgba(43,127,255,.45);
}
.check-list .ck svg{width:13px;height:13px}

.tag-cloud{display:flex;flex-wrap:wrap;gap:12px}
.tag-cloud span{
  padding:10px 19px;border-radius:10px;
  background:linear-gradient(145deg,rgba(43,127,255,.16),rgba(25,185,255,.05));
  border:1px solid var(--line);
  font-size:14px;font-weight:600;color:var(--cyan-soft);
  transition:.3s var(--ease);
}
.tag-cloud span:hover{border-color:var(--blue);color:var(--blue);box-shadow:var(--glow);transform:translateY(-3px)}

/* ---------- 图文交替条 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split.reverse .split-media{order:2}
.split-media{
  position:relative;border-radius:20px;overflow:hidden;
  border:1px solid var(--line);aspect-ratio:4/3;
  box-shadow:0 24px 60px rgba(43,127,255,.18);
  background:linear-gradient(160deg,#d6e4fb,#c4d8f4);
}
.split-media img{width:100%;height:100%;object-fit:cover}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(255,255,255,.2))}
.split h3{font-size:26px;font-weight:900;margin-bottom:16px;line-height:1.35;color:var(--text)}
.split .desc{color:var(--text-2);margin-bottom:26px;font-size:15.5px}

/* ---------- 数据带 ---------- */
.stat-band{
  display:grid;grid-template-columns:repeat(4,1fr);
  border:1px solid var(--line);border-radius:20px;overflow:hidden;
  background:linear-gradient(135deg,rgba(43,127,255,.1),rgba(25,185,255,.03));
  box-shadow:0 8px 24px rgba(43,127,255,.08);
}
.stat-band div{padding:34px 20px;text-align:center;border-right:1px solid var(--line)}
.stat-band div:last-child{border-right:none}
.stat-band .n{font-size:clamp(26px,3vw,40px);font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-band .t{color:var(--muted);font-size:13.5px;margin-top:4px}

/* ---------- 流程步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step;position:relative}
.step{
  position:relative;padding:28px 22px;border-radius:16px;
  background:var(--card);border:1px solid var(--line);
  box-shadow:0 6px 16px rgba(43,127,255,.06);
}
.step::before{
  counter-increment:step;content:"0" counter(step);
  font-size:34px;font-weight:900;
  color:rgba(43,127,255,.4);
  font-family:Arial,sans-serif;display:block;margin-bottom:10px;
}
.step h4{font-size:17px;margin-bottom:8px;color:var(--text)}
.step p{font-size:14px;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta{padding:90px 0}
.cta-box{
  position:relative;overflow:hidden;text-align:center;
  border-radius:26px;padding:72px 30px;
  border:1px solid rgba(43,127,255,.35);
  background:
    radial-gradient(600px 300px at 50% 0%,rgba(43,127,255,.18),transparent 70%),
    linear-gradient(135deg,#dbeafe,#c4d8f4 55%,#d6e4fb);
}
.cta-box::before{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:linear-gradient(rgba(43,127,255,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(43,127,255,.14) 1px,transparent 1px);
  background-size:40px 40px;
  mask-image:radial-gradient(ellipse 70% 80% at 50% 50%,#000,transparent);
  -webkit-mask-image:radial-gradient(ellipse 70% 80% at 50% 50%,#000,transparent);
}
.cta-box h2{font-size:clamp(24px,3.2vw,40px);font-weight:900;margin-bottom:16px;position:relative;color:var(--text)}
.cta-box p{color:var(--cyan-soft);margin-bottom:34px;position:relative}
.cta-box .btn{position:relative}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);background:rgba(241,246,253,.9);padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:44px}
.footer h5{font-size:15px;margin-bottom:18px;color:var(--text);letter-spacing:1px}
.footer p{color:var(--muted);font-size:14px}
.footer li{margin-bottom:11px}
.footer li a{color:var(--muted);font-size:14px;transition:.3s}
.footer li a:hover{color:var(--blue)}
.footer .f-actions{display:flex;flex-direction:column;gap:12px}
.footer .f-actions a{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  padding:10px 18px;border-radius:10px;border:1px solid var(--line);
  font-size:14px;color:var(--text-2);transition:.3s;
  background:rgba(255,255,255,.6);
}
.footer .f-actions a:hover{border-color:var(--blue);color:var(--blue);box-shadow:var(--glow)}
.footer .f-actions svg{width:17px;height:17px}
.copyright{
  border-top:1px solid var(--line);padding-top:24px;
  text-align:center;color:var(--muted);font-size:13px;
}

/* ---------- 右下角在线客服 ---------- */
.service{position:fixed;right:22px;bottom:22px;z-index:200;display:flex;flex-direction:column;align-items:flex-end;gap:14px}
.service-btn{
  width:62px;height:62px;border-radius:50%;
  background:var(--grad);
  display:grid;place-items:center;color:#fff;
  box-shadow:0 10px 30px rgba(43,127,255,.4);
  position:relative;
  transition:transform .3s var(--ease);
}
.service-btn svg{width:29px;height:29px;position:relative;z-index:2}
.service-btn:hover{transform:scale(1.08)}
.service-btn::before,.service-btn::after{
  content:"";position:absolute;inset:0;border-radius:50%;
  border:2px solid rgba(43,127,255,.7);
  animation:ring 2.2s ease-out infinite;
}
.service-btn::after{animation-delay:1.1s}
@keyframes ring{
  0%{transform:scale(1);opacity:.9}
  100%{transform:scale(1.75);opacity:0}
}
.service-btn .tip{
  position:absolute;right:72px;top:50%;transform:translateY(-50%);
  white-space:nowrap;background:#fff;
  border:1px solid var(--line);color:var(--blue);
  font-size:13px;font-weight:700;padding:8px 14px;border-radius:10px;
  opacity:0;pointer-events:none;transition:.3s;
  box-shadow:0 6px 18px rgba(43,127,255,.12);
}
.service-btn:hover .tip{opacity:1;right:78px}

.service-panel{
  width:300px;
  background:rgba(255,255,255,.97);
  border:1px solid rgba(43,127,255,.35);
  border-radius:18px;
  box-shadow:0 24px 70px rgba(43,127,255,.22),0 0 40px rgba(43,127,255,.12);
  backdrop-filter:blur(18px);
  overflow:hidden;
  transform-origin:bottom right;
  transform:scale(.85) translateY(16px);opacity:0;pointer-events:none;
  transition:.4s var(--ease);
}
.service-panel.open{transform:none;opacity:1;pointer-events:auto}
.service-panel .sp-head{
  padding:20px 22px;
  background:linear-gradient(135deg,rgba(43,127,255,.25),rgba(25,185,255,.1));
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:12px;
}
.sp-head .av{
  width:42px;height:42px;border-radius:50%;flex:none;
  background:var(--grad);display:grid;place-items:center;color:#fff;
  animation:pulse 2.4s infinite;
}
.sp-head .av svg{width:22px;height:22px}
.sp-head b{display:block;font-size:15.5px;color:var(--text)}
.sp-head span{font-size:12.5px;color:var(--cyan-soft);display:flex;align-items:center;gap:6px}
.sp-head span i{width:7px;height:7px;border-radius:50%;background:#3dffa5;box-shadow:0 0 8px #3dffa5;font-style:normal}
.sp-body{padding:16px}
.sp-item{
  display:flex;align-items:center;gap:13px;width:100%;
  padding:13px 14px;border-radius:13px;
  border:1px solid var(--line);
  background:rgba(43,127,255,.06);
  margin-bottom:10px;text-align:left;
  transition:.3s var(--ease);
}
.sp-item:hover{border-color:var(--blue);background:rgba(43,127,255,.12);transform:translateX(-4px)}
.sp-item .si{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;flex:none;background:rgba(43,127,255,.12);color:var(--blue)}
.sp-item .si svg{width:19px;height:19px}
.sp-item b{font-size:14px;display:block;color:var(--text)}
.sp-item small{font-size:12px;color:var(--muted)}
.sp-foot{padding:12px 20px 16px;font-size:12px;color:var(--muted);text-align:center}

/* 返回顶部 */
.to-top{
  width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.95);
  display:grid;place-items:center;color:var(--blue);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:.35s var(--ease);
  box-shadow:0 6px 18px rgba(43,127,255,.12);
}
.to-top.show{opacity:1;pointer-events:auto;transform:none}
.to-top:hover{box-shadow:var(--glow);border-color:var(--blue)}
.to-top svg{width:20px;height:20px}

/* ---------- 滚动进场动画 ---------- */
.reveal{opacity:0;transform:translateY(38px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}
.reveal.d2{transition-delay:.2s}
.reveal.d3{transition-delay:.3s}

/* ---------- 子页面 hero 小变体 ---------- */
.page-hero{padding:calc(var(--header-h) + 64px) 0 70px;text-align:center;position:relative}
.page-hero .badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 18px;border-radius:999px;border:1px solid var(--line);
  background:rgba(43,127,255,.08);color:var(--blue);
  font-size:13px;font-weight:700;letter-spacing:1.5px;margin-bottom:22px;
}
.page-hero .badge svg{fill:var(--blue)}
.page-hero h1{font-size:clamp(28px,4vw,48px);font-weight:900;line-height:1.25;margin-bottom:18px;color:var(--text)}
.page-hero h1 .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.page-hero p{max-width:720px;margin:0 auto;color:var(--text-2);font-size:16.5px}
.page-hero .pills{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.page-hero .pills span{
  padding:8px 18px;border-radius:999px;font-size:13.5px;font-weight:600;
  border:1px solid var(--line);background:rgba(43,127,255,.07);color:var(--cyan-soft);
}

/* ============================================================
   响应式：平板
   ============================================================ */
@media (max-width:1024px){
  .hero-grid{gap:36px}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .float-chip.c1{left:0}
  .float-chip.c2{right:0}
}

/* ============================================================
   响应式：手机
   ============================================================ */
@media (max-width:860px){
  .menu{display:none}
  .burger{display:block}
  .hero{padding:calc(var(--header-h) + 40px) 0 60px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-actions{gap:12px}
  .btn{padding:12px 24px;font-size:14.5px;width:100%;justify-content:center}
  .hero-actions{display:grid;grid-template-columns:1fr 1fr}
  .hero-stats{gap:24px}
  .section{padding:62px 0}
  .g-2,.g-3,.g-4{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:30px}
  .split.reverse .split-media{order:0}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .stat-band div:nth-child(2){border-right:none}
  .stat-band div:nth-child(1),.stat-band div:nth-child(2){border-bottom:1px solid var(--line)}
  .video-side{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .float-chip{font-size:12px;padding:9px 13px}
  .float-chip.c3{left:0;bottom:-4%}
  .cta-box{padding:52px 22px}
  .cta-box .btn{width:100%}
  .service{right:14px;bottom:14px}
  .service-btn{width:56px;height:56px}
  .service-panel{width:min(88vw,300px)}
  .section-head{margin-bottom:38px}
}

@media (max-width:400px){
  .hero-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .logo > span{display:none}
}