/* =========================================================================
   月亮巴巴 · 官网设计系统
   品牌母题：弦月 + 星点（呼应「月亮」）   主线：快 · 省 · 数据可控
   配色：午夜藏青 + 月光金 + AI 青   零外部依赖，纯静态
   ========================================================================= */

:root {
  /* —— 深色（夜空） —— */
  --navy-900:#0A1230; --navy-800:#0E1A3E; --navy-700:#0B1437;
  --panel:#172452; --panel-2:#1F2D60; --panel-line:#2A3A72;
  /* —— 强调 —— */
  --gold:#F5C24B; --gold-dk:#CF9A2C; --gold-tint:#FBF1D8;
  --cyan:#46E5D0; --cyan-dk:#12A998; --cyan-tint:#DFFAF5;
  /* —— 中性 —— */
  --ice:#BCC6E4; --ice-2:#8A95BF;
  --white:#FFFFFF; --lpanel:#F4F6FB; --lpanel-2:#ECF0F9;
  --line:#E2E7F3; --muted:#78839E; --ink:#16203D; --navy:#0B1437;

  --shadow-soft:0 18px 48px -22px rgba(16,28,66,.34);
  --shadow-card:0 10px 30px -16px rgba(16,28,66,.30);
  --shadow-dark:0 24px 60px -26px rgba(3,6,20,.72);
  --shadow-gold:0 16px 40px -16px rgba(207,154,44,.5);

  --r-sm:10px; --r:16px; --r-lg:22px; --r-pill:999px;
  --maxw:1200px; --pad:24px;
  --sp-section:clamp(64px,9vw,112px);

  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei UI","Microsoft YaHei","Hiragino Sans GB","Noto Sans SC","Source Han Sans SC",system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ----------------------------- reset/base ----------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:92px;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-sans);color:var(--ink);background:var(--white);
  line-height:1.6;font-size:16px;letter-spacing:.2px;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none}
::selection{background:var(--gold);color:var(--navy-900)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

/* ----------------------------- layout helpers ------------------------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--pad)}
.section{position:relative;padding:var(--sp-section) 0}
.section.dark{background:var(--navy-900);color:var(--white)}
.section.dark-2{background:linear-gradient(180deg,#0B1538,#0A1230);color:var(--white)}
.section.tint{background:linear-gradient(180deg,#FBFCFE,#F2F5FB)}
.section-head{max-width:760px;margin:0 0 clamp(36px,5vw,56px)}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;
  letter-spacing:3px;text-transform:uppercase;color:var(--gold-dk);margin-bottom:16px;
}
.dark .eyebrow,.dark-2 .eyebrow{color:var(--gold)}
.eyebrow::before{content:"";width:22px;height:2px;background:currentColor;border-radius:2px}

.section-title{
  font-size:clamp(26px,3.6vw,40px);font-weight:800;line-height:1.22;color:var(--navy);
  letter-spacing:.5px;
}
.dark .section-title,.dark-2 .section-title{color:var(--white)}
.section-sub{margin-top:16px;font-size:clamp(15px,1.6vw,18px);color:var(--muted);line-height:1.7}
.dark .section-sub,.dark-2 .section-sub{color:var(--ice)}

.grad-gold{background:linear-gradient(96deg,#FFD66B,#F5C24B 40%,#E7A92E);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-cyan{background:linear-gradient(96deg,#7DF4E5,#46E5D0 45%,#12A998);-webkit-background-clip:text;background-clip:text;color:transparent}
.accent-gold{color:var(--gold)}.accent-cyan{color:var(--cyan)}

/* ----------------------------- buttons -------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:var(--r-pill);font-weight:700;font-size:15px;
  letter-spacing:.5px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s,color .22s;
  white-space:nowrap;cursor:pointer;
}
.btn .arrow{transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(4px)}
.btn-primary{background:linear-gradient(96deg,#FFD66B,#F5C24B);color:#3A2A06;box-shadow:var(--shadow-gold)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 46px -16px rgba(207,154,44,.62)}
.btn-ghost{background:transparent;color:var(--white);border:1.5px solid rgba(188,198,228,.4)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn-dark{background:var(--navy);color:var(--white);box-shadow:var(--shadow-card)}
.btn-dark:hover{transform:translateY(-2px);background:#13205a}
.btn-sm{padding:11px 20px;font-size:14px}
.btn-lg{padding:16px 32px;font-size:16px}

/* ----------------------------- pills/badges --------------------------- */
.pill{
  display:inline-flex;align-items:center;gap:9px;padding:9px 18px;border-radius:var(--r-pill);
  font-size:14px;font-weight:700;background:rgba(23,36,82,.6);border:1px solid var(--panel-line);color:var(--white);
}
.pill .dot{width:9px;height:9px;border-radius:50%}
.dot-gold{background:var(--gold)}.dot-cyan{background:var(--cyan)}
.tag{display:inline-block;padding:5px 12px;border-radius:var(--r-pill);font-size:12.5px;font-weight:700;
  background:var(--gold-tint);color:var(--gold-dk)}
.tag.cyan{background:var(--cyan-tint);color:var(--cyan-dk)}

/* ----------------------------- header / nav --------------------------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s var(--ease),box-shadow .3s var(--ease),backdrop-filter .3s;
}
.site-header.scrolled{background:rgba(8,14,40,.86);backdrop-filter:saturate(160%) blur(14px);box-shadow:0 1px 0 rgba(188,198,228,.1)}
.nav-inner{display:flex;align-items:center;gap:22px;height:74px}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand img{height:34px;width:auto}
.nav{display:flex;align-items:center;gap:30px;margin-left:14px}
.nav a{font-size:15px;font-weight:600;color:rgba(231,236,248,.82);position:relative;padding:6px 0}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--gold);transition:right .25s var(--ease)}
.nav a:hover{color:var(--white)}
.nav a:hover::after,.nav a.active::after{right:0}
.nav a.active{color:var(--white)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:14px}
.nav-tel{font-size:14px;font-weight:700;color:var(--gold);white-space:nowrap}
.nav-tel span{color:var(--ice-2);font-weight:500;margin-right:4px}
.nav-toggle{display:none;width:44px;height:44px;flex-direction:column;justify-content:center;gap:6px;margin-left:auto}
.nav-toggle span{display:block;height:2px;width:24px;background:var(--white);border-radius:2px;transition:transform .25s var(--ease),opacity .2s}
.nav-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ----------------------------- motifs --------------------------------- */
.starfield{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.star{position:absolute;border-radius:50%;background:#fff;opacity:.5;animation:twinkle 4s ease-in-out infinite}
@keyframes twinkle{0%,100%{opacity:.18;transform:scale(.7)}50%{opacity:.85;transform:scale(1)}}
.glow{position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none;opacity:.5}
.glow-gold{background:radial-gradient(circle,rgba(245,194,75,.5),transparent 68%)}
.glow-cyan{background:radial-gradient(circle,rgba(70,229,208,.42),transparent 68%)}
.crescent{position:absolute;pointer-events:none}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.floaty{animation:float 7s ease-in-out infinite}

/* ----------------------------- hero ----------------------------------- */
.hero{position:relative;background:radial-gradient(120% 90% at 78% 8%,#15235a 0%,#0B1538 42%,#0A1230 100%);color:var(--white);overflow:hidden;padding:148px 0 96px}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13.5px;font-weight:700;letter-spacing:1px;color:var(--ice);
  background:rgba(23,36,82,.5);border:1px solid var(--panel-line);padding:8px 16px;border-radius:var(--r-pill);margin-bottom:24px}
.hero-eyebrow .ico{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(70,229,208,.18)}
.hero-title{font-size:clamp(34px,5.4vw,62px);font-weight:800;line-height:1.12;letter-spacing:.5px}
.hero-sub{margin-top:22px;font-size:clamp(16px,1.9vw,20px);color:var(--ice);line-height:1.7;max-width:560px}
.hero-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:30px 40px;margin-top:48px;padding-top:30px;border-top:1px solid rgba(188,198,228,.16)}
.hero-stat .num{font-size:30px;font-weight:800;color:var(--white);letter-spacing:.5px;line-height:1}
.hero-stat .num b{color:var(--gold);font-weight:800}
.hero-stat .lbl{margin-top:7px;font-size:13px;color:var(--ice-2)}
/* hero visual (moon disc) */
.hero-visual{position:relative;height:420px}
.moon-disc{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:330px;height:330px}
.orbit{position:absolute;border:1px solid rgba(188,198,228,.16);border-radius:50%}
.orbit-chip{position:absolute;display:inline-flex;align-items:center;gap:7px;padding:8px 14px;border-radius:var(--r-pill);
  font-size:13px;font-weight:700;background:rgba(13,21,56,.82);border:1px solid var(--panel-line);color:var(--white);
  box-shadow:var(--shadow-dark);backdrop-filter:blur(4px);white-space:nowrap}
.orbit-chip .d{width:8px;height:8px;border-radius:50%}

/* ----------------------------- cards (generic) ------------------------ */
.grid{display:grid;gap:22px}
.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{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:30px;
  box-shadow:var(--shadow-card);transition:transform .28s var(--ease),box-shadow .28s var(--ease),border-color .28s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-soft);border-color:#D4DCEF}
.card .card-ico{width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;
  background:var(--gold-tint);color:var(--gold-dk)}
.card .card-ico.cyan{background:var(--cyan-tint);color:var(--cyan-dk)}
.card .card-ico svg{width:28px;height:28px}
.card h3{font-size:19px;font-weight:800;color:var(--navy);margin-bottom:10px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.7}
.card .card-note{margin-top:14px;font-size:12.5px;font-weight:700;color:var(--gold-dk)}
.card .card-note.cyan{color:var(--cyan-dk)}
/* dark cards */
.card.glass{background:linear-gradient(180deg,rgba(31,45,96,.5),rgba(23,36,82,.55));border:1px solid var(--panel-line);
  box-shadow:var(--shadow-dark);backdrop-filter:blur(4px)}
.card.glass h3{color:var(--white)}.card.glass p{color:var(--ice)}
.card.glass:hover{border-color:rgba(70,229,208,.4)}

/* ----------------------------- dual curve ----------------------------- */
.curve-wrap{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:8px}
.curve-card{position:relative;border-radius:var(--r-lg);padding:34px;overflow:hidden;border:1px solid var(--panel-line);
  background:linear-gradient(160deg,rgba(31,45,96,.6),rgba(13,21,56,.5))}
.curve-card .kicker{font-size:13px;font-weight:800;letter-spacing:2px;text-transform:uppercase}
.curve-card h3{font-size:24px;font-weight:800;color:var(--white);margin:12px 0 8px}
.curve-card .desc{font-size:15px;color:var(--ice);line-height:1.7}
.curve-card .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.curve-card .chips span{font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:var(--r-pill);
  background:rgba(10,18,48,.55);border:1px solid var(--panel-line);color:var(--ice)}
.curve-card.first{--ac:var(--cyan)}
.curve-card.second{--ac:var(--gold);border-color:rgba(245,194,75,.34);
  background:linear-gradient(160deg,rgba(60,46,12,.42),rgba(13,21,56,.6))}
.curve-card .kicker{color:var(--ac)}
.curve-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--ac)}
.curve-badge{position:absolute;top:26px;right:26px;font-size:12px;font-weight:800;color:var(--navy-900);
  background:var(--gold);padding:5px 12px;border-radius:var(--r-pill)}
.curve-figure{margin-top:14px}

/* ----------------------------- pillars (快省可控) --------------------- */
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.pillar{position:relative;border-radius:var(--r-lg);padding:34px 30px;background:linear-gradient(180deg,rgba(31,45,96,.55),rgba(23,36,82,.5));
  border:1px solid var(--panel-line);box-shadow:var(--shadow-dark);overflow:hidden;transition:transform .3s var(--ease),border-color .3s}
.pillar:hover{transform:translateY(-6px);border-color:rgba(245,194,75,.45)}
.pillar .ch{font-size:46px;font-weight:800;line-height:1;color:var(--gold)}
.pillar.cy .ch{color:var(--cyan)}
.pillar .en{font-size:12px;font-weight:800;letter-spacing:3px;color:var(--ice-2);margin-top:8px}
.pillar .rule{height:1px;background:var(--panel-line);margin:20px 0}
.pillar ul li{display:flex;gap:10px;font-size:14px;color:var(--ice);line-height:1.55;margin-bottom:12px}
.pillar ul li::before{content:"";flex:0 0 7px;height:7px;border-radius:50%;background:var(--gold);margin-top:8px}
.pillar.cy ul li::before{background:var(--cyan)}
.pillar .foot{margin-top:18px;padding:11px 14px;border-radius:var(--r-sm);text-align:center;font-size:13px;font-weight:800;
  background:rgba(10,18,48,.6);color:var(--gold)}
.pillar.cy .foot{color:var(--cyan)}

/* ----------------------------- stat strip ----------------------------- */
.statbar{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.statbar .s .n{font-size:clamp(32px,4vw,46px);font-weight:800;color:var(--gold-dk);line-height:1;letter-spacing:.5px}
.dark .statbar .s .n,.dark-2 .statbar .s .n{color:var(--gold)}
.statbar .s.cy .n{color:var(--cyan-dk)}.dark .statbar .s.cy .n{color:var(--cyan)}
.statbar .s .l{margin-top:12px;font-size:14px;color:var(--muted)}
.dark .statbar .s .l{color:var(--ice)}

/* ----------------------------- service 六智 --------------------------- */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc{display:flex;gap:18px;align-items:flex-start;padding:24px;border-radius:var(--r);background:var(--white);
  border:1px solid var(--line);box-shadow:var(--shadow-card);transition:transform .26s var(--ease),box-shadow .26s}
.svc:hover{transform:translateY(-5px);box-shadow:var(--shadow-soft)}
.svc .zi{flex:0 0 58px;height:58px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:28px;font-weight:800;color:var(--white);background:linear-gradient(150deg,#1F2D60,#0B1437)}
.svc:nth-child(even) .zi{background:linear-gradient(150deg,var(--cyan-dk),#0B5048)}
.svc:nth-child(3n) .zi{background:linear-gradient(150deg,var(--gold-dk),#7A5512)}
.svc h3{font-size:17px;font-weight:800;color:var(--navy);margin:0}
.svc h3 small{font-size:13px;font-weight:600;color:var(--muted);margin-left:8px}
.svc p{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.6}

/* ----------------------------- capabilities --------------------------- */
.cap{padding:26px;border-radius:var(--r);background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .26s var(--ease),box-shadow .26s,border-color .26s}
.cap:hover{transform:translateY(-5px);box-shadow:var(--shadow-soft);border-color:#D4DCEF}
.cap .dot{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:16px;
  background:var(--gold-tint)}
.cap:nth-child(even) .dot{background:var(--cyan-tint)}
.cap .dot i{width:16px;height:16px;border-radius:50%;background:var(--gold-dk)}
.cap:nth-child(even) .dot i{background:var(--cyan-dk)}
.cap h3{font-size:15.5px;font-weight:800;color:var(--navy);line-height:1.35;margin:0}
.cap p{font-size:13px;color:var(--muted);margin-top:8px;line-height:1.6}
.cap .src{margin-top:10px;font-size:11px;color:var(--ice-2);font-style:italic}

/* ----------------------------- about / timeline ----------------------- */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.values{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:8px}
.value{padding:22px;border-radius:var(--r);background:rgba(255,255,255,.04);border:1px solid var(--panel-line)}
.value .vt{font-size:16px;font-weight:800;color:var(--white)}
.value .vd{font-size:13.5px;color:var(--ice);margin-top:6px;line-height:1.6}
.quote-card{position:relative;border-radius:var(--r-lg);padding:40px;background:linear-gradient(160deg,#13205a,#0B1437);
  border:1px solid var(--panel-line);box-shadow:var(--shadow-dark);overflow:hidden}
.quote-card .q1{font-size:26px;font-weight:800;color:var(--white);line-height:1.45}
.quote-card .q2{margin-top:16px;font-size:15px;color:var(--ice);line-height:1.8}

/* ----------------------------- methodology steps ---------------------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{position:relative;padding:28px 24px;border-radius:var(--r);background:var(--white);border:1px solid var(--line);
  box-shadow:var(--shadow-card)}
.step .n{width:48px;height:48px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;
  font-weight:800;color:var(--white);background:linear-gradient(150deg,var(--gold),var(--gold-dk));margin-bottom:16px}
.step:nth-child(even) .n{background:linear-gradient(150deg,var(--cyan),var(--cyan-dk))}
.step h3{font-size:17px;font-weight:800;color:var(--navy);margin:0}
.step p{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.65}

/* ----------------------------- compare table -------------------------- */
.compare{width:100%;border-collapse:separate;border-spacing:0;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-card);background:#fff}
.compare th,.compare td{padding:16px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.compare thead th{font-weight:800;color:var(--white);background:var(--panel-2);font-size:14.5px}
.compare thead th.me{background:linear-gradient(150deg,var(--gold),var(--gold-dk));color:var(--navy-900)}
.compare tbody th{font-weight:800;color:var(--navy);background:var(--lpanel-2);width:170px}
.compare td{color:var(--ink)}
.compare td.me{background:var(--gold-tint);font-weight:700}
.compare tr:last-child th,.compare tr:last-child td{border-bottom:0}

/* ----------------------------- industry cols -------------------------- */
.ind{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card);background:#fff}
.ind .head{padding:20px;text-align:center;font-size:18px;font-weight:800;color:#fff;background:linear-gradient(150deg,var(--gold),var(--gold-dk))}
.ind:nth-child(2) .head{background:linear-gradient(150deg,var(--cyan-dk),#0B5048)}
.ind .body{padding:24px}
.ind .body li{display:flex;gap:10px;font-size:14px;color:var(--ink);line-height:1.55;margin-bottom:14px}
.ind .body li::before{content:"";flex:0 0 7px;height:7px;border-radius:50%;background:var(--gold);margin-top:7px}
.ind:nth-child(2) .body li::before{background:var(--cyan-dk)}

/* ----------------------------- engagement models ---------------------- */
.models{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.model{position:relative;border-radius:var(--r-lg);padding:32px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .28s var(--ease),box-shadow .28s}
.model:hover{transform:translateY(-6px);box-shadow:var(--shadow-soft)}
.model.featured{border:1.5px solid var(--gold);background:linear-gradient(180deg,#FFFDF6,#FBF1D8)}
.model .ribbon{position:absolute;top:22px;right:24px;font-size:12px;font-weight:800;color:var(--gold-dk)}
.model .badge{display:inline-block;padding:7px 16px;border-radius:var(--r-pill);font-size:13px;font-weight:800;color:#fff;
  background:var(--cyan-dk)}
.model:nth-child(2) .badge,.model.featured .badge{background:var(--gold-dk)}
.model h3{font-size:21px;font-weight:800;color:var(--navy);margin:18px 0 4px}
.model .fit{font-size:13.5px;color:var(--muted);padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:16px}
.model .deliver{font-size:14px;color:var(--ink);line-height:1.7}
.model .deliver b{color:var(--muted)}

/* ----------------------------- CTA band ------------------------------- */
.cta-band{position:relative;border-radius:var(--r-lg);padding:clamp(40px,5vw,64px);overflow:hidden;
  background:radial-gradient(120% 140% at 85% 10%,#15235a,#0A1230);box-shadow:var(--shadow-dark);text-align:center}
.cta-band h2{font-size:clamp(26px,3.6vw,40px);font-weight:800;color:#fff;line-height:1.25;position:relative;z-index:2}
.cta-band p{margin-top:16px;font-size:17px;color:var(--ice);position:relative;z-index:2}
.cta-band .btns{margin-top:32px;display:flex;justify-content:center;flex-wrap:wrap;gap:16px;position:relative;z-index:2}

/* ----------------------------- footer --------------------------------- */
.site-footer{background:var(--navy-900);color:var(--ice);padding:64px 0 30px;position:relative}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(188,198,228,.14)}
.foot-brand img{height:34px;width:auto;margin-bottom:18px}
.foot-brand p{font-size:13.5px;color:var(--ice-2);line-height:1.8;max-width:300px}
.foot-col .fh{font-size:14px;font-weight:800;color:#fff;margin:0 0 18px;letter-spacing:.5px}
.foot-col li{margin-bottom:11px}
.foot-col a,.foot-col span{font-size:13.5px;color:var(--ice-2)}
.foot-col a:hover{color:var(--gold)}
.foot-contact li{display:flex;gap:10px;margin-bottom:14px;font-size:13.5px;color:var(--ice)}
.foot-contact .k{color:var(--ice-2);flex:0 0 auto}
.foot-contact b{color:#fff;font-weight:700}
.foot-contact a:hover b{color:var(--gold)}
.foot-bottom{padding-top:24px;display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;justify-content:space-between}
.foot-bottom,.foot-bottom a{font-size:12.5px;color:var(--ice-2)}
.foot-bottom a:hover{color:var(--ice)}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 18px}

/* ----------------------------- reveal anim ---------------------------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .star,.floaty{animation:none}
  html{scroll-behavior:auto}
}

/* ----------------------------- subpage hero --------------------------- */
.subhero{position:relative;background:radial-gradient(120% 100% at 80% 0%,#15235a,#0A1230);color:#fff;overflow:hidden;
  padding:150px 0 80px}
.subhero .container{position:relative;z-index:2}
.subhero h1{font-size:clamp(30px,4.6vw,52px);font-weight:800;line-height:1.15;margin-top:18px;max-width:880px}
.subhero p{margin-top:20px;font-size:clamp(16px,1.8vw,19px);color:var(--ice);max-width:680px;line-height:1.7}
.crumbs{font-size:13px;color:var(--ice-2)}
.crumbs a:hover{color:var(--gold)}

/* ----------------------------- a11y / utilities ----------------------- */
.skip-link{position:fixed;top:-64px;left:16px;z-index:300;background:var(--gold);color:var(--navy-900);
  font-weight:800;font-size:14px;padding:11px 20px;border-radius:10px;box-shadow:var(--shadow-gold);transition:top .2s var(--ease)}
/* 仅键盘 Tab 聚焦时滑出（!important 压过内联兜底隐藏） */
.skip-link:focus-visible{top:14px!important}

.to-top{position:fixed;right:22px;bottom:22px;z-index:90;width:46px;height:46px;border-radius:50%;
  background:rgba(23,36,82,.9);border:1px solid var(--panel-line);color:#fff;font-size:17px;font-weight:800;
  box-shadow:var(--shadow-dark);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s,border-color .2s,color .2s}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--gold);color:var(--gold)}

/* 柱状图生长动画（ai.html why-now） */
.reveal-bar{transform:scaleY(.12);transform-origin:bottom;transition:transform .9s var(--ease) .15s}
.reveal-bar.in{transform:scaleY(1)}
@media (prefers-reduced-motion:reduce){.reveal-bar{transform:none;transition:none}}

@media print{
  .site-header,.to-top,.nav-toggle,.skip-link,.starfield,.glow,.hero-visual,.cta-band .btns{display:none!important}
  .section{padding:28px 0}
  body{background:#fff}
}

/* ----------------------------- misc ----------------------------------- */
.src-note{margin-top:26px;font-size:12px;color:var(--muted);font-style:italic;line-height:1.6}
.dark .src-note,.dark-2 .src-note{color:var(--ice-2)}
.center{text-align:center}
.mt-l{margin-top:44px}.mt-m{margin-top:30px}
.lead-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ----------------------------- responsive ----------------------------- */
@media (max-width:1024px){
  .g-4{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{display:none}
  .foot-grid{grid-template-columns:1fr 1fr}
  .about-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:860px){
  .nav,.nav-tel{display:none}
  .nav-toggle{display:flex}
  .site-header.scrolled{background:rgba(8,14,40,.94)}
  .nav.open{
    display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:rgba(8,14,40,.98);backdrop-filter:blur(14px);padding:10px 0 18px;border-top:1px solid var(--panel-line);
    box-shadow:0 20px 40px -20px rgba(0,0,0,.6)
  }
  .nav.open a{padding:15px 24px;font-size:16px;border-bottom:1px solid rgba(188,198,228,.08)}
  .nav.open a::after{display:none}
  .g-3,.pillars,.curve-wrap,.svc-grid,.steps,.models,.statbar,.values{grid-template-columns:1fr 1fr}
  .ind-wrap{grid-template-columns:1fr!important}
}
@media (max-width:560px){
  :root{--pad:18px}
  .g-2,.g-3,.g-4,.pillars,.curve-wrap,.svc-grid,.steps,.models,.statbar,.values,.about-grid{grid-template-columns:1fr}
  .hero{padding:120px 0 72px}
  .hero-stats{gap:22px 28px}
  .nav-inner{height:64px}
  .nav.open{top:64px}
  .card,.pillar,.model,.curve-card{padding:24px}
  .compare-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .compare{min-width:560px}
  .foot-grid{grid-template-columns:1fr}
}

/* ----------------------------- 合作客户 logo 墙 ----------------------- */
.clients-head{margin:56px 0 26px;text-align:center}
.clients-head .t{font-size:21px;font-weight:800;color:#fff}
.clients-head .s{font-size:13.5px;color:var(--ice-2);margin-top:7px}
.logos{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.logo-tile{height:100px;background:#fff;border-radius:14px;display:flex;align-items:center;justify-content:center;
  padding:16px 24px;box-shadow:0 12px 28px -16px rgba(0,0,0,.55);transition:transform .26s var(--ease),box-shadow .26s}
.logo-tile:hover{transform:translateY(-5px);box-shadow:0 18px 36px -16px rgba(0,0,0,.6)}
.logo-tile img{max-height:62px;max-width:100%;width:auto;object-fit:contain}
@media (max-width:600px){
  .logos{grid-template-columns:repeat(2,1fr);gap:14px}
  .logo-tile{height:84px;padding:14px 18px}
  .logo-tile img{max-height:52px}
}