/* 悦音 · AI 科技风（首页） */
:root{
  --bg:#03050c; --bg2:#080b14; --panel:rgba(255,255,255,.035);
  --line:rgba(120,160,255,.16); --line2:rgba(120,160,255,.09);
  --fg:#e8eefc; --fg2:#a3b3d2; --fg3:#7e8da9;
  --cy:#22d3ee; --bl:#4f7cff; --vi:#8b5cf6; --gr:#34d399; --am:#fbbf24;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","Microsoft YaHei",sans-serif;
  --wide:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font-family:var(--sans);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
.wrap{max-width:var(--wide);margin:0 auto;padding:0 24px}

/* 背景：网格 + 光晕 */
.bgfx{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bgfx .grid{position:absolute;inset:-2px;
  background-image:linear-gradient(var(--line2) 1px,transparent 1px),linear-gradient(90deg,var(--line2) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 0%,#000 20%,transparent 75%)}
.bgfx .orb{position:absolute;border-radius:50%;filter:blur(110px);opacity:.34}
.o1{width:640px;height:640px;background:#1e40ff;top:-300px;left:-160px}
.o2{width:520px;height:520px;background:#8b5cf6;top:-120px;right:-180px;opacity:.22}
.o3{width:600px;height:600px;background:#0891b2;top:820px;left:35%;opacity:.11}
.bgfx::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(3,5,12,.30) 0%,rgba(3,5,12,.64) 42%,rgba(3,5,12,.82) 100%)}

/* 导航 */
header{position:sticky;top:0;z-index:60;backdrop-filter:blur(16px);
  background:rgba(4,6,13,.72);border-bottom:1px solid var(--line2)}
.nav{height:60px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15px;color:var(--fg);text-decoration:none}
.brand .dot{width:8px;height:8px;border-radius:50%;background:var(--cy);box-shadow:0 0 12px var(--cy);animation:pl 2s infinite}
.brand small{font-family:var(--mono);font-size:11px;color:var(--fg3);font-weight:400;letter-spacing:.06em}
@keyframes pl{0%,100%{opacity:1}50%{opacity:.3}}
.nav .lk{display:flex;align-items:center;gap:22px}
.nav .lk a{font-size:13px;color:var(--fg2);text-decoration:none;transition:.2s}
.nav .lk a:hover{color:#fff}
.nav .lk a.cta{border:1px solid var(--line);padding:7px 15px;border-radius:8px;color:var(--fg)}
.nav .lk a.cta:hover{border-color:var(--cy);box-shadow:0 0 0 3px rgba(34,211,238,.09)}
@media(max-width:960px){.nav .lk a:not(.cta){display:none}}

/* Hero */
.hero{position:relative;z-index:1;padding:96px 0 72px}
.tag{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:11.5px;
  letter-spacing:.09em;color:var(--cy);border:1px solid rgba(34,211,238,.28);
  background:rgba(34,211,238,.06);padding:7px 15px;border-radius:999px;margin-bottom:26px}
h1{font-size:clamp(38px,6.4vw,74px);line-height:1.08;letter-spacing:-.02em;font-weight:800}
h1 .g{background:linear-gradient(100deg,#7dd3fc,#a78bfa 50%,#22d3ee);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lead{margin-top:24px;max-width:660px;color:var(--fg2);font-size:18px}
.lead b{color:var(--fg);font-weight:600}
.actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:38px}
.btn{display:inline-block;padding:14px 28px;border-radius:11px;font-size:15px;font-weight:600;
  text-decoration:none;transition:.25s}
.btn-p{background:linear-gradient(135deg,var(--bl),var(--vi));color:#fff;
  box-shadow:0 10px 32px rgba(79,124,255,.32)}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(79,124,255,.45)}
.btn-s{border:1px solid var(--line);color:var(--fg)}
.btn-s:hover{border-color:var(--cy);background:rgba(34,211,238,.05)}

/* 数字 */
.kpis{display:grid;gap:1px;margin-top:64px;background:var(--line2);
  border:1px solid var(--line2);border-radius:16px;overflow:hidden;
  grid-template-columns:repeat(auto-fit,minmax(min(180px,100%),1fr))}
.kpi{background:var(--bg);padding:26px 22px}
.kpi .n{font-family:var(--mono);font-size:32px;font-weight:700;letter-spacing:-.02em;
  background:linear-gradient(120deg,#7dd3fc,#a78bfa);-webkit-background-clip:text;
  background-clip:text;-webkit-text-fill-color:transparent}
.kpi .l{color:var(--fg3);font-size:13px;margin-top:5px}

/* 区块 */
section{position:relative;z-index:1;padding:84px 0}
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--cy);
  text-transform:uppercase;margin-bottom:12px}
h2{font-size:clamp(26px,3.8vw,44px);line-height:1.15;letter-spacing:-.02em;font-weight:750}
.sub{color:var(--fg2);margin-top:14px;max-width:680px;font-size:16.5px}
.hr{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent)}

/* 任务卡 */
.tasks{display:grid;gap:14px;margin-top:48px;grid-template-columns:repeat(auto-fill,minmax(min(268px,100%),1fr))}
.task{background:var(--panel);border:1px solid var(--line2);border-radius:14px;padding:24px 22px;transition:.3s;position:relative}
.task:hover{border-color:rgba(34,211,238,.42);background:rgba(34,211,238,.045);transform:translateY(-3px)}
.task .no{font-family:var(--mono);font-size:11px;color:var(--fg3);letter-spacing:.1em}
.task h3{font-size:16.5px;font-weight:650;margin:9px 0 9px}
.task p{color:var(--fg2);font-size:14px;line-height:1.6}
.task .badge{display:inline-block;margin-top:13px;font-family:var(--mono);font-size:11px;
  color:var(--gr);border:1px solid rgba(52,211,153,.3);background:rgba(52,211,153,.07);
  padding:3px 9px;border-radius:5px}

/* 对比表 */
.cmp{margin-top:44px;border:1px solid var(--line2);border-radius:16px;overflow:hidden}
.cmp table{width:100%;border-collapse:collapse;font-size:14.5px}
.cmp th,.cmp td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line2)}
.cmp thead th{background:rgba(255,255,255,.028);font-size:12.5px;font-family:var(--mono);
  letter-spacing:.06em;color:var(--fg3);font-weight:600}
.cmp thead th:last-child{color:var(--cy)}
.cmp tbody tr:last-child td{border-bottom:0}
.cmp td:first-child{color:var(--fg);font-weight:600;width:22%}
.cmp .bad{color:var(--fg3)}
.cmp .good{color:var(--fg)}
.cmp .good::before{content:"▸ ";color:var(--cy)}

/* 流程 */
.flow{display:grid;gap:12px;margin-top:44px;grid-template-columns:repeat(auto-fit,minmax(min(180px,100%),1fr))}
.step{background:var(--panel);border:1px solid var(--line2);border-radius:14px;padding:22px 20px;position:relative}
.step .i{font-family:var(--mono);font-size:11px;color:var(--cy);letter-spacing:.1em}
.step h4{font-size:15.5px;font-weight:650;margin:9px 0 7px}
.step p{color:var(--fg2);font-size:13.5px;line-height:1.55}

/* 客户 */
.logos{display:flex;flex-wrap:wrap;gap:12px 30px;margin-top:38px}
.logos span{font-size:15.5px;color:var(--fg3);transition:.2s}
.logos span:hover{color:var(--fg)}

/* 合作方式 */
.coop{display:grid;gap:16px;margin-top:44px;grid-template-columns:repeat(auto-fit,minmax(min(260px,100%),1fr))}
.coop .c{background:var(--panel);border:1px solid var(--line2);border-radius:16px;padding:30px 26px;transition:.3s}
.coop .c:hover{border-color:rgba(139,92,246,.42);transform:translateY(-3px)}
.coop h3{font-size:18px;font-weight:650;margin-bottom:11px}
.coop p{color:var(--fg2);font-size:14.5px}

/* CTA */
.cta{position:relative;z-index:1;padding:92px 0;text-align:center}
.cta .box{border:1px solid var(--line);border-radius:22px;padding:64px 40px;
  background:linear-gradient(140deg,rgba(79,124,255,.11),rgba(139,92,246,.07));position:relative;overflow:hidden}
.cta .box::before{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 0%,rgba(34,211,238,.16),transparent 60%)}
.cta h2,.cta .sub,.cta .actions{position:relative}

/* 页脚 */
footer{border-top:1px solid var(--line2);padding:44px 0 40px;position:relative;z-index:1;
  font-size:13px;color:var(--fg3)}
.fcols{display:grid;gap:28px;grid-template-columns:repeat(auto-fit,minmax(min(190px,100%),1fr))}
footer h5{font-size:12px;font-family:var(--mono);letter-spacing:.1em;color:var(--fg2);
  text-transform:uppercase;margin-bottom:13px}
footer a{display:block;color:var(--fg3);text-decoration:none;margin-bottom:8px;transition:.2s}
footer a:hover{color:var(--cy)}
.fbar{margin-top:36px;padding-top:22px;border-top:1px solid var(--line2);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

.rv{opacity:0;transform:translateY(20px);transition:opacity .75s cubic-bezier(.2,.7,.3,1),transform .75s cubic-bezier(.2,.7,.3,1)}
.rv.on{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}}
/* 服务线 */
.lines{display:grid;gap:16px;margin-top:46px;grid-template-columns:repeat(auto-fit,minmax(min(300px,100%),1fr))}
.line{background:var(--panel);border:1px solid var(--line2);border-radius:16px;padding:30px 26px;transition:.3s;position:relative;overflow:hidden}
.line:hover{border-color:rgba(34,211,238,.4);transform:translateY(-3px)}
.line .code{font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--vi)}
.line h3{font-size:19px;font-weight:650;margin:10px 0 12px}
.line p{color:var(--fg2);font-size:14.5px;line-height:1.65}
.line dl{margin-top:16px;padding-top:16px;border-top:1px solid var(--line2);display:grid;gap:9px}
.line dt{font-family:var(--mono);font-size:11px;color:var(--fg3);letter-spacing:.06em}
.line dd{font-size:14px;color:var(--fg);margin:-4px 0 0}
/* 分级 */
.levels{display:grid;gap:12px;margin-top:38px;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr))}
.lv{background:var(--panel);border:1px solid var(--line2);border-radius:14px;padding:24px 22px}
.lv .t{font-family:var(--mono);font-size:11px;letter-spacing:.1em;margin-bottom:10px}
.lv.l1 .t{color:var(--gr)} .lv.l2 .t{color:var(--am)} .lv.l3 .t{color:var(--vi)}
.lv h4{font-size:16px;font-weight:650;margin-bottom:9px}
.lv p{color:var(--fg2);font-size:13.5px;line-height:1.6}
/* 安全 */
.safe{display:grid;gap:14px;margin-top:40px;grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr))}
.safe .s{background:rgba(52,211,153,.05);border:1px solid rgba(52,211,153,.22);border-radius:14px;padding:22px 20px}
.safe h4{font-size:15px;font-weight:650;margin-bottom:8px;color:var(--gr)}
.safe p{color:var(--fg2);font-size:13.5px;line-height:1.6}
/* 微信二维码 */
.qrwrap{display:flex;gap:36px;align-items:center;justify-content:center;flex-wrap:wrap;
  margin-top:44px;position:relative}
.qrwrap img{width:236px;height:236px;border-radius:18px;background:#fff;padding:12px;
  box-shadow:0 16px 48px rgba(0,0,0,.45)}
.qid{text-align:left;font-size:15px;color:var(--fg2);line-height:2}
.qid .k{font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--fg3);display:block;margin-bottom:4px}
.qid b{font-family:var(--mono);font-size:22px;color:var(--fg);letter-spacing:.01em}
.qid .tip{display:block;margin-top:10px;font-size:13px;color:var(--fg3);line-height:1.7}
/* 右上角业务下拉 */
.dd{position:relative;display:inline-block}
.ddbtn{background:none;border:0;font-family:inherit;font-size:13px;color:var(--fg2);
  cursor:pointer;padding:8px 4px;transition:.2s}
.ddbtn:hover{color:#fff}
.ddmenu{position:absolute;top:calc(100% + 6px);right:0;min-width:178px;background:#0b0f1a;
  border:1px solid var(--line);border-radius:13px;padding:8px;display:none;
  box-shadow:0 22px 56px rgba(0,0,0,.65);z-index:90}
.dd:hover .ddmenu,.dd.open .ddmenu{display:block}
.ddmenu a{display:block;padding:9px 13px;border-radius:8px;color:var(--fg2);font-size:13px;
  text-decoration:none;white-space:nowrap;transition:.18s}
.ddmenu a:hover{background:rgba(34,211,238,.09);color:#fff}
.ddmenu .sep{height:1px;background:var(--line2);margin:6px 8px}
/* ===== 科技感增强 ===== */
/* 网格缓慢流动 */
.bgfx .grid{animation:gridflow 24s linear infinite}
@keyframes gridflow{from{background-position:0 0}to{background-position:52px 52px}}
/* 鼠标跟随光晕 */
.cursorGlow{position:fixed;width:520px;height:520px;border-radius:50%;pointer-events:none;z-index:0;
  background:radial-gradient(circle,rgba(79,124,255,.13),transparent 62%);
  transform:translate(-50%,-50%);transition:opacity .4s;opacity:0}
/* 首屏两栏 */
.herogrid{display:grid;gap:56px;align-items:center;grid-template-columns:1.05fr .95fr}
@media(max-width:980px){.herogrid{grid-template-columns:1fr;gap:40px}}
.hero .lead{max-width:none}
/* 终端卡 */
.term{background:rgba(5,9,18,.8);border:1px solid rgba(120,160,255,.22);border-radius:16px;
  font-family:var(--mono);font-size:12.5px;overflow:hidden;
  box-shadow:0 34px 90px rgba(0,0,0,.6),inset 0 0 60px rgba(34,211,238,.045)}
.term .bar{display:flex;align-items:center;gap:7px;padding:12px 16px;
  border-bottom:1px solid rgba(120,160,255,.14);background:rgba(255,255,255,.018)}
.term .bar i{width:9px;height:9px;border-radius:50%;background:#242c44;display:block}
.term .bar i:first-child{background:#3a2b3f}
.term .bar span{margin-left:10px;color:var(--fg3);font-size:11px;letter-spacing:.06em}
.term .body{padding:20px 20px 24px;min-height:274px}
.term .ln{color:var(--fg2);line-height:2;white-space:pre-wrap;word-break:break-all}
.term .ln .p{color:var(--cy)}
.term .ln .k{color:#7dd3fc}
.term .ln .v{color:#4fe3cc}
.term .ln .c{color:#5d6b8a}
.term .cur{display:inline-block;width:7px;height:14px;background:var(--cy);vertical-align:-2px;
  animation:blink 1.05s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
/* 数据滚动条 */
.ticker{overflow:hidden;padding:14px 0;border-top:1px solid var(--line2);border-bottom:1px solid var(--line2);
  position:relative;z-index:1;background:rgba(255,255,255,.012);
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.ticker .track{display:flex;gap:50px;white-space:nowrap;width:max-content;
  animation:marquee 42s linear infinite;font-family:var(--mono);font-size:12px;
  color:var(--fg3);letter-spacing:.08em}
.ticker .track span::before{content:"◆ ";color:rgba(34,211,238,.5)}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
/* KPI 数字发光 */
.kpi .n{text-shadow:0 0 32px rgba(79,124,255,.35)}
/* 卡片悬停光晕 */
.task:hover,.line:hover{box-shadow:0 0 0 1px rgba(34,211,238,.22),0 14px 40px rgba(0,0,0,.4)}
/* ===== 科技感 2.0 ===== */
/* 粒子网络画布 */
#net{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55}
/* 扫描线覆层 */
.scan{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:repeating-linear-gradient(to bottom,transparent 0 2px,rgba(140,180,255,.022) 2px 4px)}
/* 终端 HUD 边角 */
.term{position:relative}
.term::before,.term::after{content:"";position:absolute;width:16px;height:16px;
  border:1.5px solid rgba(34,211,238,.6);pointer-events:none}
.term::before{top:-6px;left:-6px;border-right:0;border-bottom:0}
.term::after{bottom:-6px;right:-6px;border-left:0;border-top:0}
/* 卡片扫描扫过 */
.task,.line,.biz,.card{position:relative;overflow:hidden}
.task::before,.line::before{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(34,211,238,.09),transparent);
  transition:left .7s cubic-bezier(.2,.7,.3,1);pointer-events:none}
.task:hover::before,.line:hover::before{left:130%}
/* KPI 数字滚动 */
.kpi .n.num{font-variant-numeric:tabular-nums}
/* 章节序号 */
.seq{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:rgba(34,211,238,.75);
  display:block;margin-bottom:6px}
.eyebrow .seq{display:inline;margin:0 .5em 0 0}
/* 标题微光扫描 */
h1.glowline{position:relative}
h1.glowline::after{content:"";position:absolute;left:0;right:0;bottom:-14px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(34,211,238,.6),transparent);
  animation:sweepline 3.6s ease-in-out infinite}
@keyframes sweepline{0%,100%{opacity:.25;transform:scaleX(.6)}50%{opacity:.9;transform:scaleX(1)}}
/* ===== 科技感 3.0 ===== */
/* 顶部滚动进度 */
.prog{position:fixed;top:0;left:0;height:2px;width:0;z-index:80;
  background:linear-gradient(90deg,rgba(79,124,255,.2),var(--cy));
  box-shadow:0 0 14px rgba(34,211,238,.7)}
/* HUD 角标装饰 */
.hero::before,.hero::after{content:"";position:absolute;width:22px;height:22px;
  border:1px solid rgba(34,211,238,.35);pointer-events:none;z-index:1}
.hero::before{top:56px;left:12px;border-right:0;border-bottom:0}
.hero::after{top:56px;right:12px;border-left:0;border-bottom:0}
/* KPI 条更加硬核 */
.kpi{background:linear-gradient(180deg,rgba(255,255,255,.032),rgba(255,255,255,.006))}
.kpi .l{font-size:12.5px;letter-spacing:.02em}
/* 区块标题前缀脉冲点 */
.eyebrow::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--cy);margin-right:8px;vertical-align:middle;
  box-shadow:0 0 0 0 rgba(34,211,238,.55);animation:pulse 2.4s ease-out infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(34,211,238,.5)}70%{box-shadow:0 0 0 9px rgba(34,211,238,0)}100%{box-shadow:0 0 0 0 rgba(34,211,238,0)}}
@media(max-width:700px){#net{opacity:.35}.scan{display:none}.hero::before,.hero::after{display:none}}
/* ===== 科技感 4.0：标题逐字浮现 ===== */
[data-fx="chars"].fx .ch{display:inline-block;opacity:0;
  transform:translateY(.4em) rotateX(-45deg);transform-origin:50% 100%;
  transition:opacity .65s cubic-bezier(.2,.7,.3,1),transform .65s cubic-bezier(.2,.7,.3,1)}
[data-fx="chars"].fx.fxon .ch{opacity:1;transform:none}
[data-fx="chars"].fx .g{display:inline-block;opacity:0;transform:translateY(12px);
  transition:opacity .9s .22s cubic-bezier(.2,.7,.3,1),transform .9s .22s cubic-bezier(.2,.7,.3,1)}
[data-fx="chars"].fx.fxon .g{opacity:1;transform:none}
/* 区块序号 */
.eyebrow .sq{color:rgba(34,211,238,.5);letter-spacing:.1em;margin-right:3px}
/* ==========================================================
   移动端适配（全站）· 2026-10
   ========================================================== */
@media(max-width:900px){
  .nav{height:auto;min-height:52px;flex-wrap:nowrap;gap:12px;padding-top:8px;padding-bottom:8px}
  .nav .wide{height:auto;min-height:52px;flex-wrap:nowrap;gap:12px;padding-top:8px;padding-bottom:8px}
  .brand{flex:0 0 auto}
  .nav .lk,.menu{flex:1 1 auto;min-width:0;flex-wrap:nowrap;overflow-x:auto;gap:16px;
    scrollbar-width:none;-ms-overflow-style:none;padding-bottom:1px}
  .nav .lk::-webkit-scrollbar,.menu::-webkit-scrollbar{display:none}
  .nav .lk a:not(.cta),.menu a:not(.tel){display:inline-block}
  .nav .lk a,.menu a{font-size:12.5px;margin-left:0;white-space:nowrap}
  .nav .lk a.cta{padding:5px 12px;font-size:12px;white-space:nowrap}
  .dd{flex:0 0 auto}
  .ddbtn{margin-left:0;padding:0;white-space:nowrap;font-size:12.5px}
  .ddmenu{left:auto;right:0}
}
@media(max-width:760px){
  .hero{padding:60px 0 44px}
  .wrap.hero{padding:60px 24px 44px}
  h1{font-size:clamp(30px,8.6vw,46px)}
  h1.tight{font-size:clamp(28px,7.4vw,40px)}
  h2{font-size:clamp(24px,6.4vw,34px)}
  section,.sec{padding:56px 0}
  .cta{padding:64px 0}
  .lead{font-size:16px}
  .posbar{font-size:11.5px;padding:8px 12px}
  .tag{font-size:11px;padding:6px 12px}
  .kpis{grid-template-columns:1fr 1fr;margin-top:44px}
  .kpi{padding:18px 16px}
  .kpi .n{font-size:23px}
  .kpi .l{font-size:11.5px}
  .stat .n{font-size:34px}
  .stats{gap:18px;margin-top:36px}
  .card,.biz,.dark .card{padding:26px 22px}
  .task,.line{padding:22px 18px}
  .vgrid,.gallery,.gallery.widefig,.cards,.bizgrid,.tasks,.lines,.coop,.flow,.contact-grid{grid-template-columns:1fr}
  .gallery.portrait{grid-template-columns:1fr 1fr;gap:10px}
  .gallery.portrait figure{border-radius:12px}
  .cmp{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .cmp table{min-width:580px}
  .actions{flex-direction:column;align-items:stretch}
  .btn{text-align:center;display:block}
  .fcols{grid-template-columns:1fr 1fr;gap:24px}
  .fbar{flex-direction:column;gap:6px}
  footer{padding:40px 0 32px}
  .lb{padding:14px}
  .vmodal{padding:12px}
  .vmclose{top:-38px;width:34px;height:34px}
  .split{gap:26px}
  .bizgrid{margin-top:38px}
  .chips{gap:8px;margin-top:26px}
  .chip{font-size:13.5px;padding:9px 15px}
  .hero-sub{margin-top:36px}
  .links{gap:16px;font-size:16px}
}
@media(max-width:430px){
  .fcols{grid-template-columns:1fr}
  .kpis{grid-template-columns:1fr 1fr}
  .kpis .kpi:last-child{grid-column:span 2}
  .wrap.hero{padding:56px 16px 40px}
  .gallery.portrait{grid-template-columns:1fr 1fr}
  .w,.wide{padding:0 16px}
}
/* 移动端：下拉面板不做悬停展开（避免被横向滚动容器裁切），点击直接进业务总览 */
@media(max-width:900px){.dd:hover .ddmenu,.dd.open .ddmenu{display:none}}

/* ===== 导航自适应 v2（全宽可见，任何宽度都不隐藏） ===== */
@media(max-width:1100px){
  .nav{height:auto;flex-wrap:wrap;gap:8px 16px;padding:9px 0}
  .nav .lk{width:100%;flex:1 1 100%;flex-wrap:wrap;gap:8px 16px;justify-content:flex-start;
    overflow:visible;padding-bottom:0}
  .nav .lk a:not(.cta){display:inline-block}
  .nav .lk a{font-size:12.5px;white-space:nowrap}
  .nav .lk a.cta{padding:5px 12px;font-size:12.5px}
  .brand{flex:0 0 auto}
  .nav .lk .dd{flex:0 0 auto}
  .nav .lk .ddbtn{margin-left:0;padding:0;white-space:nowrap;font-size:12.5px}
}
@media(max-width:620px){
  .nav .lk{flex-wrap:nowrap;overflow-x:auto;gap:14px;scrollbar-width:none;-ms-overflow-style:none;
    mask-image:linear-gradient(90deg,#000 88%,transparent);
    -webkit-mask-image:linear-gradient(90deg,#000 88%,transparent)}
  .nav .lk::-webkit-scrollbar{display:none}
  .nav .lk a{font-size:12px}
}