/* ============================================================
   河北沐熵能源科技有限公司 · 企业官网
   风格：clean-tech editorial / geometric-decorative
   兼容：环保(绿) + 软件(蓝/青) 双行业
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root{
  /* color scale */
  --navy:#0A2540;          /* deep navy · 软件/科技主舰 */
  --navy-2:#0D3B66;
  --navy-soft:#133A63;
  --ink:#10231C;           /* deep-green-black body text */
  --ink-2:#22402F;
  --text-sub:#58705F;
  --text-faint:#8CA397;
  --bg:#F2F8F4;            /* very light green-gray */
  --bg-2:#E9F3EE;
  --surface:#FFFFFF;
  --surface-2:#F7FBF9;
  --border:#DCE9E1;
  --border-2:#C6DCD0;

  /* accents */
  --green:#0FA477;         /* primary brand · energy / env */
  --green-strong:#0B8A6A;
  --green-soft:rgba(15,164,119,.12);
  --cyan:#0EA5C9;          /* secondary · software */
  --cyan-soft:rgba(14,165,201,.12);
  --amber:#E8A144;          /* 微点缀 */
  --amber-soft:rgba(232,161,68,.14);
  --red:#D6453D;

  /* type scale */
  --fs-12:12px; --fs-13:13px; --fs-14:14px; --fs-15:15px; --fs-16:16px;
  --fs-18:18px; --fs-20:20px; --fs-24:24px; --fs-30:30px; --fs-40:40px; --fs-56:56px;

  --radius-sm:6px; --radius-md:10px; --radius-lg:16px; --radius-xl:24px;
  --shadow-sm:0 1px 2px rgba(10,37,64,.06);
  --shadow-md:0 6px 20px -6px rgba(10,37,64,.14), 0 2px 6px rgba(10,37,64,.05);
  --shadow-lg:0 20px 48px -16px rgba(10,37,64,.22), 0 8px 16px -8px rgba(10,37,64,.10);

  --font-body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-display:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"SF Mono","Consolas","JetBrains Mono",monospace;

  --layout-max:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.45s;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--green);color:#fff}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit;font-size:inherit}

.container{max-width:var(--layout-max);margin:0 auto;padding:0 24px;position:relative}

/* ---------- utility ---------- */
.section-pad{padding:96px 0}
.section-head{max-width:760px;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.14em;color:var(--green);text-transform:uppercase;margin-bottom:16px}
.eyebrow::before{content:"";width:22px;height:2px;background:linear-gradient(90deg,var(--green),var(--cyan));border-radius:2px}
.section-head.center .eyebrow::before,.section-head.center .eyebrow::after{content:""}
.section-title{font-family:var(--font-display);font-size:var(--fs-40);font-weight:800;letter-spacing:-.02em;line-height:1.2;color:var(--navy);margin-bottom:16px}
.section-head p{color:var(--text-sub);font-size:17px;max-width:640px}
.section-head.center p{margin-left:auto;margin-right:auto}

.lead-num{font-family:var(--font-mono);font-size:13px;color:var(--text-faint)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;font-size:15px;line-height:1;border-radius:var(--radius-md);padding:15px 26px;transition:all var(--dur) var(--ease);white-space:nowrap}
.btn svg{width:18px;height:18px}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-strong));color:#fff;box-shadow:0 8px 20px -8px rgba(11,138,106,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 28px -10px rgba(11,138,106,.6)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.55);color:#fff;background:rgba(255,255,255,.06);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}
.btn-outline{border:1.5px solid var(--border-2);color:var(--navy);background:var(--surface)}
.btn-outline:hover{border-color:var(--green);color:var(--green-strong)}
.btn-sm{padding:10px 16px;font-size:13px;border-radius:var(--radius-sm);gap:6px}
.btn .arrow-ico{transition:transform var(--dur) var(--ease)}
.btn:hover .arrow-ico{transform:translateX(4px)}

/* ---------- header / nav ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;transition:background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur)}
.site-header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.site-header.scrolled .nav-link{color:var(--ink)}
.site-header.scrolled .nav-link:hover{color:var(--green-strong)}
.nav{max-width:var(--layout-max);margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--green),var(--cyan));display:grid;place-items:center;color:#fff;flex:none}
.brand-mark svg{width:24px;height:24px}
.brand-mark-img{background:none;border-radius:0}
.brand-mark-img img{width:auto;height:42px;display:block;object-fit:contain}
.footer-brand .brand-mark-img img{height:34px}
.brand-text{line-height:1.1}
.brand-cn{font-weight:800;font-size:18px;color:#fff;letter-spacing:.02em}
.site-header.scrolled .brand-cn{color:var(--navy)}
.brand-en{font-size:11px;letter-spacing:.18em;color:rgba(255,255,255,.65);text-transform:uppercase}
.site-header.scrolled .brand-en{color:var(--text-faint)}
.brand-mark{box-shadow:0 6px 18px -8px rgba(10,37,64,.4)}
.site-header.scrolled .brand-mark{box-shadow:0 6px 18px -8px rgba(15,164,119,.5)}
.nav-links{display:flex;align-items:center;gap:34px;list-style:none}
.nav-link{font-size:15px;font-weight:500;color:rgba(255,255,255,.85);position:relative;padding:6px 0;transition:color var(--dur) var(--ease)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--green),var(--cyan));transition:width var(--dur) var(--ease);border-radius:2px}
.nav-link:hover,.nav-link.active{color:var(--green)}
.site-header.scrolled .nav-link.active{color:var(--green-strong)}
.nav-link.active::after,.nav-link:hover::after{width:100%}
.nav-cta{margin-left:8px}
.nav-toggle{display:none;color:var(--navy);width:40px;height:40px;border-radius:8px;align-items:center;justify-content:center}
.nav-toggle svg{width:24px;height:24px}
.site-header:not(.scrolled) .nav-toggle{color:#fff}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:radial-gradient(1200px 600px at 80% -10%,rgba(14,165,201,.35),transparent 55%),radial-gradient(900px 500px at 10% 110%,rgba(15,164,119,.45),transparent 55%),linear-gradient(160deg,var(--navy) 0%,#0B2C4E 60%,#0A2440 100%);color:#fff;overflow:hidden}
.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(1100px 700px at 50% 30%,#000 20%,transparent 75%);-webkit-mask-image:radial-gradient(1100px 700px at 50% 30%,#000 20%,transparent 75%);pointer-events:none}
.hero-orb{position:absolute;border-radius:50%;filter:blur(60px);opacity:.5}
.hero-orb.o1{width:380px;height:380px;background:var(--green);top:-80px;right:-40px}
.hero-orb.o2{width:300px;height:300px;background:var(--cyan);bottom:-60px;left:12%;opacity:.32}
.hero-inner{position:relative;z-index:2;padding:140px 24px 100px;display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:center}
.hero-kicker{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.16em;color:#A9D9C6;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);padding:8px 16px;border-radius:100px;margin-bottom:28px}
.hero-kicker svg{width:14px;height:14px}
.hero h1{font-size:var(--fs-56);font-weight:800;letter-spacing:-.025em;line-height:1.14;max-width:820px;margin-bottom:24px}
.hero h1 .grad{background:linear-gradient(110deg,#6EE7C0,#35C3E0 70%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:16px;font-weight:400;color:#D6E7EF;max-width:720px;line-height:1.8;letter-spacing:.02em;margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:56px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:40px;border-top:1px solid rgba(255,255,255,.14);max-width:880px}
.stat{padding-left:20px;border-left:2px solid rgba(110,231,192,.5)}
.stat b{display:block;font-family:var(--font-display);font-size:30px;font-weight:800;line-height:1.1;color:#fff}
.stat b .unit{font-size:16px;color:var(--green);letter-spacing:0;font-weight:800;margin-left:2px}
.stat span{display:block;font-size:13px;color:#9FB8C6;margin-top:4px;letter-spacing:.04em}

/* ---------- hero copy leading index ---------- */
.hero-index{display:flex;align-items:center;gap:14px;margin-bottom:26px}
.hero-index .hx{font-family:var(--font-mono);font-size:14px;letter-spacing:.2em;color:#6EE7C0;font-weight:600}
.hline{width:64px;height:1px;background:linear-gradient(90deg,rgba(110,231,192,.6),transparent)}
.hero-lines{display:flex;gap:14px}
.hero-lines em{font-style:normal;font-size:12px;letter-spacing:.22em;color:rgba(255,255,255,.5)}

/* ---------- hero energy console ---------- */
.hero-visual{position:relative}
.con-topbar{display:flex;align-items:center;gap:7px;padding:12px 16px;background:rgba(6,18,30,.55);border:1px solid rgba(255,255,255,.14);border-bottom:none;border-radius:16px 16px 0 0}
.con-topbar .dot{width:10px;height:10px;border-radius:50%}
.con-topbar .dot.r{background:#FF5F57}
.con-topbar .dot.y{background:#FEBC2E}
.con-topbar .dot.g{background:#28C840}
.con-topbar i{font-style:normal;font-size:12px;letter-spacing:.08em;color:#9FB8C6;margin-left:8px}
.con-body{background:linear-gradient(160deg,rgba(15,164,119,.10),rgba(14,165,201,.08)),rgba(8,22,38,.6);border:1px solid rgba(255,255,255,.14);border-radius:0 0 16px 16px;padding:22px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);position:relative;overflow:hidden}
.con-body::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:34px 34px;pointer-events:none}
.con-gauge{display:flex;align-items:center;gap:22px;margin-bottom:20px;position:relative}
.gauge-ring{width:132px;height:132px;flex:none;border-radius:50%;background:conic-gradient(#6EE7C0 0 calc(var(--g,70)*1%),rgba(255,255,255,.09) calc(var(--g,70)*1%) 100%);display:grid;place-items:center;position:relative;animation:gaugeIn 1.2s var(--ease) both}
@keyframes gaugeIn{from{transform:rotate(-90deg) scale(.8);opacity:0}to{transform:rotate(0) scale(1);opacity:1}}
.gauge-ring::before{content:"";position:absolute;inset:7px;border-radius:50%;background:rgba(8,22,38,.9)}
.gauge-core{position:relative;text-align:center}
.gauge-core b{font-family:var(--font-display);font-size:30px;font-weight:800;color:#fff;line-height:1}
.gauge-core b span{font-size:15px;color:#6EE7C0}
.gauge-core small{display:block;font-size:12px;color:#9FB8C6;margin-top:6px;letter-spacing:.05em}
.gauge-side{position:relative}
.gauge-cap{font-size:15px;font-weight:700;color:#EDF7F3;line-height:1.55;margin-bottom:12px}
.live{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:#9FB8C6}
.live i{width:8px;height:8px;border-radius:50%;background:#28C840;box-shadow:0 0 0 0 rgba(40,200,64,.5);animation:pulse 1.8s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(40,200,64,.5)}70%{box-shadow:0 0 0 8px rgba(40,200,64,0)}100%{box-shadow:0 0 0 0 rgba(40,200,64,0)}}
.con-metrics{display:flex;flex-direction:column;gap:13px;margin-bottom:18px;position:relative}
.mtr .mtr-top{display:flex;align-items:center;gap:9px;margin-bottom:7px;color:#C8DCE5;font-size:13px}
.mtr .mtr-top b{margin-left:auto;color:#fff;font-weight:700}
.mtr .mtr-top b span{color:#6EE7C0}
.mtr .ic{width:9px;height:9px;border-radius:2px}
.mtr .ic.m1{background:linear-gradient(135deg,#6EE7C0,#0FA477)}
.mtr .ic.m2{background:linear-gradient(135deg,#35C3E0,#0EA5C9)}
.mtr .ic.m3{background:linear-gradient(135deg,#FCD34D,#E8A144)}
.mtr .bar{height:6px;border-radius:6px;background:rgba(255,255,255,.1);overflow:hidden}
.mtr .bar i{display:block;height:100%;width:var(--w,0%);border-radius:6px;background:linear-gradient(90deg,var(--green),var(--cyan));animation:barUp 1.4s var(--ease) both}
@keyframes barUp{from{width:0}to{width:var(--w)}}
.con-chips{display:flex;flex-wrap:wrap;gap:8px;position:relative}
.con-chips span{font-size:12px;color:#A9D9C6;border:1px solid rgba(110,231,192,.35);background:rgba(110,231,192,.08);border-radius:100px;padding:6px 12px;letter-spacing:.02em}
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:44px}
}
@media (max-width:768px){
  .hero-inner{padding:120px 24px 80px}
  .hero-lines{display:none}
  .hero-corner{display:none}
}

/* ---------- hero tech decorations ---------- */
.hero-corner{position:absolute;width:54px;height:54px;border:2px solid rgba(110,231,192,.5);opacity:.7}
.hero-corner.c1{top:26px;left:26px;border-right:none;border-bottom:none;border-radius:8px 0 0 0}
.hero-corner.c2{bottom:26px;left:26px;border-right:none;border-top:none;border-radius:0 0 0 8px}
.hero-corner.c3{top:26px;right:26px;border-left:none;border-bottom:none;border-radius:0 8px 0 0}
.hero-corner.c4{bottom:26px;right:26px;border-left:none;border-top:none;border-radius:0 0 8px 0}
.hero-stats{position:relative}
.hero-stats .stat{position:relative;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.hero-stats .stat::after{content:"";position:absolute;left:20px;right:0;top:-16px;height:1px;background:linear-gradient(90deg,rgba(110,231,192,.45),transparent 80%)}

/* ---------- scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(28px);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}

/* ---------- about ---------- */
.about{background:var(--surface);border-top:1px solid var(--border)}
.about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.about-copy .lead{font-size:16px;line-height:1.8;color:var(--ink);font-weight:400;margin-bottom:20px}
.about-copy p{color:var(--text-sub);font-size:16px;margin-bottom:14px}
.about-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--ink-2);background:var(--bg-2);border:1px solid var(--border);padding:7px 14px;border-radius:100px;transition:all var(--dur) var(--ease)}
.tag svg{width:14px;height:14px;color:var(--green)}
.tag:hover{border-color:var(--green);color:var(--green-strong)}
.pillar{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px;transition:all var(--dur) var(--ease);position:relative;overflow:hidden}
.pillar::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--green),var(--cyan));opacity:.8}
.pillar:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.pillar .ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;color:#fff}
.pillar .ico svg{width:26px;height:26px}
.pillar.p-green .ico{background:linear-gradient(135deg,var(--green),var(--green-strong))}
.pillar.p-cyan .ico{background:linear-gradient(135deg,var(--cyan),#0B79A6)}
.pillar h3{font-size:21px;font-weight:700;color:var(--navy);margin-bottom:10px}
.pillar p{font-size:14.5px;color:var(--text-sub);margin-bottom:16px}
.pillar ul{list-style:none;display:grid;gap:9px}
.pillar ul li{display:flex;gap:9px;font-size:14px;color:var(--ink-2)}
.pillar ul li svg{width:16px;height:16px;color:var(--green);flex:none;margin-top:4px}
.pillar-note{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--text-sub);border-top:1px dashed var(--border-2);padding-top:14px;margin-top:16px}
.pillar-note svg{width:16px;height:16px;color:var(--amber);flex:none}
.pillar-stack{display:grid;gap:20px}

/* ---------- section head + subnav ---------- */
.sec-inline{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.sec-inline .section-head{margin-bottom:0}

/* ---------- energy ---------- */
.energy{background:var(--bg-2);position:relative;overflow:hidden}
.energy::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(15,164,119,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(15,164,119,.05) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(900px 600px at 20% 10%,#000,transparent 75%);-webkit-mask-image:radial-gradient(900px 600px at 20% 10%,#000,transparent 75%);pointer-events:none}
.energy::after{content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;background:radial-gradient(circle,rgba(14,165,201,.16),transparent 65%);filter:blur(20px);pointer-events:none}
.energy .container{position:relative;z-index:1}
.energy-step{display:flex;gap:24px;align-items:center;background:rgba(255,255,255,.82);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px;margin-bottom:16px;position:relative;transition:all var(--dur) var(--ease);overflow:hidden}
.energy-step::before{content:"";position:absolute;left:0;top:0;height:100%;width:4px;background:linear-gradient(180deg,var(--green),var(--cyan));opacity:0;transition:opacity var(--dur) var(--ease)}
.energy-step::after{content:"";position:absolute;right:-46px;top:-46px;width:130px;height:130px;background:radial-gradient(circle,rgba(14,165,201,.08),transparent 70%);transition:transform var(--dur) var(--ease)}
.energy-step:hover{box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:var(--border-2)}
.energy-step:hover::before{opacity:1}
.energy-step .step-num{font-family:var(--font-mono);font-weight:700;font-size:20px;color:var(--green);width:64px;height:64px;flex:none;display:grid;place-items:center;border:1.5px solid var(--green);border-radius:16px;background:var(--green-soft);position:relative;transition:box-shadow var(--dur) var(--ease)}
.energy-step:hover .step-num{box-shadow:0 0 0 5px var(--green-soft)}
.energy-step h4{font-size:18px;font-weight:700;color:var(--navy);margin-bottom:6px}
.energy-step p{font-size:14.5px;color:var(--text-sub)}

/* energy · 带资入场 合作横幅 */
.energy-deal{position:relative;margin-top:34px;display:grid;grid-template-columns:1fr 1.9fr;gap:30px;align-items:center;padding:38px 40px;border-radius:var(--radius-xl);overflow:hidden;background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;box-shadow:var(--shadow-lg)}
.energy-deal::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:40px 40px;mask-image:radial-gradient(820px 340px at 12% 0%,#000,transparent 75%);-webkit-mask-image:radial-gradient(820px 340px at 12% 0%,#000,transparent 75%)}
.energy-deal::after{content:"";position:absolute;top:-90px;right:-90px;width:300px;height:300px;background:radial-gradient(circle,rgba(110,231,192,.4),transparent 65%);border-radius:50%;pointer-events:none}
.deal-intro{position:relative;z-index:1}
.deal-intro .eyebrow{color:#6EE7C0}
.deal-intro h3{font-size:22px;font-weight:800;letter-spacing:-.01em;line-height:1.3;margin-bottom:10px}
.deal-intro p{font-size:14px;color:#B9CFDC;line-height:1.8}
.deal-tags{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.deal-tag{display:flex;flex-direction:column;gap:4px;padding:14px 16px;border-radius:var(--radius-md);background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(4px);transition:all var(--dur) var(--ease)}
.deal-tag:hover{background:rgba(255,255,255,.12);border-color:rgba(110,231,192,.5);transform:translateY(-2px)}
.deal-tag b{font-size:14.5px;color:#fff;font-weight:700}
.deal-tag span{font-size:12px;color:#9FB8C6}
@media (max-width:768px){
  .energy-deal{grid-template-columns:1fr;padding:30px 24px;gap:22px}
  .deal-tags{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:480px){
  .deal-tags{grid-template-columns:1fr 1fr;gap:10px}
}

/* ---------- products ---------- */
.products{background:var(--surface);border-top:1px solid var(--border)}
.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.product-card{position:relative;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:34px;overflow:hidden;transition:all var(--dur) var(--ease);display:flex;flex-direction:column}
.product-card::before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--green),var(--cyan));opacity:0;transition:opacity var(--dur) var(--ease)}
.product-card::after{content:"";position:absolute;right:-50px;top:-50px;width:150px;height:150px;background:radial-gradient(circle,rgba(14,165,201,.12),transparent 70%);pointer-events:none;transition:transform var(--dur) var(--ease)}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--border-2)}
.product-card:hover::before{opacity:1}
.product-card:hover::after{transform:scale(1.35)}
.product-card .p-more{position:relative;z-index:1}
.product-card .p-feats,.product-card .p-ico{position:relative;z-index:1}
.product-card .p-ico{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;color:#fff;margin-bottom:20px;box-shadow:var(--shadow-sm)}
.product-card .p-ico svg{width:28px;height:28px}
.pic-green{background:linear-gradient(135deg,var(--green),var(--green-strong))}
.pic-cyan{background:linear-gradient(135deg,var(--cyan),#0B79A6)}
.pic-amber{background:linear-gradient(135deg,#E8A144,#D97B2E)}
.pic-navy{background:linear-gradient(135deg,#274B8E,#0D3B66)}
.pic-violet{background:linear-gradient(135deg,#8B7BF7,#5B4FD0)}
.pic-teal{background:linear-gradient(135deg,#14B8A6,#0D9488)}
.product-card h3{font-size:22px;font-weight:800;color:var(--navy);margin-bottom:6px;letter-spacing:-.01em}
.product-card .p-sub{font-size:13px;color:var(--green-strong);font-weight:600;margin-bottom:14px}
.product-card .p-desc{font-size:15px;color:var(--text-sub);margin-bottom:20px;line-height:1.7}
.product-card .p-feats{list-style:none;display:grid;gap:10px;margin-bottom:24px;flex:1}
.product-card .p-feats li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);align-items:flex-start}
.product-card .p-feats li svg{width:17px;height:17px;color:var(--green);flex:none;margin-top:3px}
.product-card .p-more{margin-top:auto}
.ghost-tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--cyan);background:var(--cyan-soft);padding:4px 10px;border-radius:100px;font-weight:600;letter-spacing:.02em}

/* ---------- dev ---------- */
.dev{background:linear-gradient(160deg,var(--navy) 0%,var(--navy-2) 100%);color:#fff;position:relative;overflow:hidden}
.dev .dev-grid{bottom:0;right:0;position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:42px 42px;mask-image:radial-gradient(800px 500px at 20% 0%,#000,transparent 70%);-webkit-mask-image:radial-gradient(800px 500px at 20% 0%,#000,transparent 70%)}
.dev .section-head p{color:#A9BFCD}
.dev-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:52px;position:relative;z-index:2}
.pipeline{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;position:relative;z-index:2}
.pipe{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-md);padding:22px 18px;transition:all var(--dur) var(--ease)}
.pipe:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.pipe .p-icon{width:40px;height:40px;border-radius:10px;background:rgba(110,231,192,.14);color:#6EE7C0;display:grid;place-items:center;margin-bottom:14px}
.pipe .p-icon svg{width:20px;height:20px}
.pipe .p-n{font-family:var(--font-mono);font-size:11px;color:#35C3E0;letter-spacing:.12em;display:block;margin-bottom:6px}
.pipe h4{font-size:16px;font-weight:600;margin-bottom:6px;color:#fff}
.pipe p{font-size:12.5px;color:#93AABB;line-height:1.6}
.cap-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:6px;position:relative;z-index:2}
.cap{display:flex;gap:14px;align-items:flex-start;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-md);padding:18px;transition:all var(--dur) var(--ease)}
.cap:hover{background:rgba(255,255,255,.1)}
.cap svg{width:20px;height:20px;color:#6EE7C0;flex:none;margin-top:2px}
.cap b{display:block;font-size:14.5px;color:#fff;margin-bottom:3px}
.cap span{font-size:12.5px;color:#93AABB;line-height:1.55}

/* ---------- why / values ---------- */
.why{background:var(--surface);border-top:1px solid var(--border)}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.value-card{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:30px;transition:all var(--dur) var(--ease)}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.value-card .v-ico{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;color:#fff;margin-bottom:18px}
.value-card .v-ico svg{width:24px;height:24px}
.value-card h3{font-size:19px;font-weight:700;color:var(--navy);margin-bottom:10px}
.value-card p{font-size:14.5px;color:var(--text-sub)}

/* ---------- numbers band ---------- */
.band-numbers{background:linear-gradient(120deg,var(--green-strong),#0B8A6A 45%,var(--navy-2));color:#fff;position:relative;overflow:hidden}
.band-numbers .container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:52px 24px}
.num-cell{text-align:center;position:relative;z-index:2}
.num-cell b{font-size:38px;font-weight:800;line-height:1;display:block;letter-spacing:-.02em}
.num-cell b .u{font-size:18px;font-weight:700;margin-left:2px;opacity:.85}
.num-cell span{display:block;font-size:13.5px;color:rgba(255,255,255,.85);margin-top:10px;letter-spacing:.04em}
.band-numbers::after{content:"";position:absolute;inset:0;background:radial-gradient(600px 220px at 12% 0%,rgba(255,255,255,.14),transparent 60%)}

/* ---------- news ---------- */
.news{background:var(--bg-2)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.news-card{background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:all var(--dur) var(--ease);display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.news-thumb{height:150px;background:linear-gradient(135deg,rgba(15,164,119,.16),rgba(14,165,201,.16));border-bottom:1px solid var(--border);display:grid;place-items:center;color:var(--green)}
.news-thumb svg{width:40px;height:40px;opacity:.85}
.news-body{padding:22px 24px;display:flex;flex-direction:column;flex:1}
.news-date{font-size:12px;color:var(--text-faint);letter-spacing:.06em;font-family:var(--font-mono);margin-bottom:10px;display:flex;align-items:center;gap:6px}
.news-date svg{width:13px;height:13px}
.news-body h3{font-size:16.5px;font-weight:700;color:var(--navy);line-height:1.5;margin-bottom:10px}
.news-body p{font-size:13.5px;color:var(--text-sub);margin-bottom:16px;flex:1}
.news-more{font-size:13px;color:var(--green-strong);display:inline-flex;align-items:center;gap:6px}
.news-more svg{width:15px;height:15px}

/* ---------- CTA contact ---------- */
.cta{background:var(--surface);border-top:1px solid var(--border);position:relative;overflow:hidden}
.cta::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(15,164,119,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(15,164,119,.045) 1px,transparent 1px);background-size:46px 46px;mask-image:radial-gradient(800px 500px at 50% 0%,#000,transparent 75%);-webkit-mask-image:radial-gradient(800px 500px at 50% 0%,#000,transparent 75%);pointer-events:none}
.cta-box{background:linear-gradient(120deg,var(--navy),var(--navy-2));border-radius:var(--radius-xl);padding:60px;color:#fff;display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;overflow:hidden;position:relative;box-shadow:var(--shadow-lg)}
.cta-box::before{content:"";position:absolute;right:-80px;top:-80px;width:300px;height:300px;background:radial-gradient(circle,rgba(110,231,192,.4),transparent 65%);border-radius:50%;pointer-events:none}
.cta-box::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:42px 42px;mask-image:radial-gradient(700px 400px at 15% 0%,#000,transparent 70%);-webkit-mask-image:radial-gradient(700px 400px at 15% 0%,#000,transparent 70%);pointer-events:none}
.cta-box>*{position:relative;z-index:1}
.cta-box h2{font-size:34px;font-weight:800;letter-spacing:-.02em;line-height:1.2;margin-bottom:16px;position:relative}
.cta-box p{color:#B9CFDC;font-size:16px;max-width:520px;margin-bottom:28px}
.cta-info{position:relative;z-index:1}
.contact-row{display:flex;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.12);color:#EDF7F3;font-size:15px}
.contact-row:last-child{border-bottom:none}
.contact-row .ci{width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.1);display:grid;place-items:center;flex:none}
.contact-row .ci svg{width:20px;height:20px;color:#6EE7C0}
.contact-row b{display:block;font-size:12px;color:#93AABB;font-weight:500;letter-spacing:.06em}
.contact-row span{font-size:15px;font-weight:500}

/* ---------- footer ---------- */
.site-footer{background:#081C30;color:#9FB8C6;padding:70px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:48px}
.footer-brand .brand-cn{color:#fff}
.footer-brand p{margin-top:16px;color:#7E96A6;line-height:1.8;font-size:13.5px;max-width:300px}
.footer-brand .contact-row{justify-content:flex-start;border:none;padding:8px 0;color:#AEC3D2}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;letter-spacing:.04em}
.footer-col ul{list-style:none;display:grid;gap:12px}
.footer-col a{color:#8FA8B8;transition:color var(--dur) var(--ease)}
.footer-col a:hover{color:#6EE7C0}
.corp-line{font-size:12.5px;color:#6E8799;line-height:1.9}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:#7E96A6}
.footer-bottom .f-link{display:flex;gap:22px}
.footer-bottom a:hover{color:#6EE7C0}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:200;display:none}
.modal.open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(6,22,38,.6);backdrop-filter:blur(4px);opacity:0;transition:opacity var(--dur) var(--ease)}
.modal.open .modal-mask{opacity:1}
.modal-box{position:relative;margin:auto;width:min(920px,92vw);max-height:88vh;overflow:auto;background:var(--surface);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);opacity:0;transform:translateY(20px);transition:all var(--dur) var(--ease)}
.modal.open .modal-box{opacity:1;transform:none}
.modal-close{position:absolute;top:18px;right:18px;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:var(--bg-2);color:var(--ink);z-index:5;transition:all var(--dur) var(--ease)}
.modal-close:hover{background:var(--red);color:#fff}
.modal-close svg{width:20px;height:20px}
.modal-head{background:linear-gradient(135deg,rgba(15,164,119,.12),rgba(14,165,201,.12));padding:40px 44px 32px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:22px}
.modal-info{display:flex;flex-direction:column;gap:22px;padding:28px 20px;border-left:1px solid var(--border);flex:1}
.modal-head h2{font-size:26px;font-weight:800;color:var(--navy);line-height:1.25}
.modal-head .m-en{font-family:var(--font-mono);font-size:12px;color:var(--green-strong);letter-spacing:.1em;margin-top:6px}
.modal-body{padding:38px 44px}
.m-block{margin-bottom:32px}
.m-block h3{font-size:18px;font-weight:700;color:var(--navy);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.m-block h3 svg{width:19px;height:19px;color:var(--green)}
.m-block p{color:var(--text-sub);font-size:15px;line-height:1.85}
.m-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:13px}
.m-list li{display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:var(--ink-2);padding:14px 16px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-md);line-height:1.6}
.m-list li svg{width:18px;height:18px;color:var(--green);flex:none;margin-top:2px}
.mock-ui{border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-2);margin-top:22px}
.mock-bar{display:flex;gap:6px;align-items:center;padding:11px 16px;background:var(--navy);}
.mock-bar i{width:9px;height:9px;border-radius:50%;opacity:.85}
.mock-bar i:nth-child(1){background:#FF5F56}.mock-bar i:nth-child(2){background:#FFBD2E}.mock-bar i:nth-child(3){background:#27C93F}
.mock-bar em{margin-left:10px;font-style:normal;font-size:11px;color:#7E96A6;font-family:var(--font-mono)}
.mock-body{padding:20px}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:16px}
.kpi{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);padding:14px}
.kpi small{font-size:11px;color:var(--text-faint);display:block;letter-spacing:.04em;margin-bottom:6px}
.kpi b{font-size:20px;font-weight:800;color:var(--navy)}
.kpi b small{font-size:12px;color:var(--green);display:inline;margin:0;font-weight:700}
.bar{height:10px;border-radius:6px;background:var(--border);overflow:hidden}
.bar i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--green),var(--cyan))}
.chip{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink);background:var(--surface);border:1px solid var(--border);padding:7px 12px;border-radius:100px}
.chip svg{width:14px;height:14px;color:var(--green)}

/* ---------- back to top ---------- */
.to-top{position:fixed;right:26px;bottom:26px;z-index:90;width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--green),var(--green-strong));color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-md);opacity:0;transform:translateY(20px);pointer-events:none;transition:all var(--dur) var(--ease)}
.to-top.show{opacity:1;transform:none;pointer-events:auto}
.to-top svg{width:22px;height:22px}
.to-top:hover{transform:translateY(-3px)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .about-grid{grid-template-columns:1fr;gap:40px}
  .pipeline{grid-template-columns:repeat(2,1fr)}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-box{grid-template-columns:1fr;gap:36px;padding:44px 36px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px}
  .product-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .section-pad{padding:64px 0}
  .section-title{font-size:30px}
  .hero h1{font-size:38px}
  .hero-lead{font-size:15px}
  .hero-inner{grid-template-columns:1fr;gap:44px;text-align:center;padding:118px 24px 64px}
  .hero-index,.hero-kicker,.hero-actions{justify-content:center}
  .hero-index{margin-left:auto;margin-right:auto}
  .hero h1{margin-left:auto;margin-right:auto}
  .hero-lead{margin-left:auto;margin-right:auto}
  .hero-visual{max-width:420px;width:100%;margin:0 auto}
  .hero-stats{grid-template-columns:1fr 1fr;border-top:none;gap:18px;max-width:100%}
  .stat{border-left:none;border-top:1px solid rgba(255,255,255,.14);padding:14px 0 0}
  .hero-stats .stat::after{display:none}
  .stat b{font-size:26px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .about-copy{max-width:560px}
  .nav-links{position:fixed;inset:72px 0 auto 0;background:rgba(255,255,255,.98);flex-direction:column;align-items:flex-start;gap:0;padding:16px 24px 28px;transform:translateY(-130%);transition:transform var(--dur) var(--ease);box-shadow:var(--shadow-lg);border-bottom:1px solid var(--border);z-index:-1}
  .nav-links.open{transform:none}
  .nav-links li{width:100%}
  .nav-link{display:block;color:var(--ink) !important;padding:14px 0;border-bottom:1px solid var(--border);width:100%;font-size:16px}
  .nav-cta{margin:16px 0 0;width:100%}
  .nav-cta .btn{width:100%}
  .nav-toggle{display:flex}
  .value-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .band-numbers .container{grid-template-columns:repeat(2,1fr);gap:28px;padding:44px 24px}
  .m-list{grid-template-columns:1fr}
  .modal-head{flex-direction:column;align-items:flex-start;padding:32px 24px}
  .modal-body{padding:28px 24px}
  .modal-info{padding:0;border:none;border-top:1px solid var(--border);padding-top:22px}
  .footer-grid{grid-template-columns:1fr}
  .energy-step{flex-direction:column;align-items:flex-start;gap:16px}
  .dev-head{flex-direction:column;align-items:flex-start}
  .hero-stats{grid-template-columns:1fr 1fr}
}
@media (max-width:480px){
  .s-grid{grid-template-columns:1fr !important}
  .pipeline,.cap-grid{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .hero-actions .btn{width:100%}
}

/* ---------- modal refinement (v2 markup) ---------- */
.modal-head .m-ico{width:60px;height:60px;border-radius:16px;display:grid;place-items:center;color:#fff;flex:none;box-shadow:var(--shadow-sm)}
.modal-head .m-ico svg{width:30px;height:30px}
.modal-head h3{font-size:24px;font-weight:800;color:var(--navy);line-height:1.28;margin-bottom:8px}
.modal-head p{font-size:14.5px;color:var(--text-sub);line-height:1.7;max-width:560px}
.m-list.two{grid-template-columns:1fr 1fr}
.mock-bar{color:#C8DCE5;font-size:13px;font-weight:600;letter-spacing:.02em;background:var(--navy);padding:13px 16px}
.kpi span{font-size:12px;color:var(--text-faint);display:block;margin-top:4px;letter-spacing:.02em}
.kpi small{font-size:11px;color:var(--text-faint);display:block;letter-spacing:.04em;margin-bottom:6px}
.kpi b{font-size:20px;font-weight:800;color:var(--navy)}
.bar-in{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--green),var(--cyan))}
.bar-in span{display:block;font-size:11px;color:#fff;font-weight:600;line-height:10px;padding-left:8px;letter-spacing:.02em}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{display:inline-flex;align-items:center;font-size:13px;color:var(--ink-2);background:var(--surface);border:1px solid var(--border);padding:8px 14px;border-radius:100px;transition:all var(--dur) var(--ease)}
.chip:hover{border-color:var(--green);color:var(--green-strong)}
.intro-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.intro-grid>div{display:flex;flex-direction:column;align-items:center;gap:10px;font-size:13px;color:var(--ink-2);text-align:center}
.intro-grid .ig{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,rgba(15,164,119,.14),rgba(14,165,201,.14));color:var(--green-strong);display:grid;place-items:center;border:1px solid var(--border)}
.intro-grid .ig svg{width:22px;height:22px}
@media (max-width:768px){
  .intro-grid{grid-template-columns:repeat(2,1fr)}
  .m-ico{display:none !important}
  .modal-head h3{font-size:20px}
}

/* ---------- 斜切分区 · 强化版面节奏 ---------- */
.energy{margin-top:-34px;clip-path:polygon(0 20px,100% 0,100% 100%,0 calc(100% - 26px));padding-top:118px}
.cta{margin-top:-40px;clip-path:polygon(0 0,100% 26px,100% 100%,0 100%);padding-top:118px}
@media (max-width:768px){
  .energy{clip-path:polygon(0 10px,100% 0,100% 100%,0 calc(100% - 12px));padding-top:96px}
  .cta{clip-path:polygon(0 0,100% 12px,100% 100%,0 100%);padding-top:96px}
}

/* ---------- side section rail ---------- */
.page-rail{position:fixed;right:26px;top:50%;transform:translateY(-50%);z-index:80;display:flex;flex-direction:column;align-items:center;gap:16px;pointer-events:none}
.page-rail .rail-label{font-size:10px;letter-spacing:.32em;color:var(--text-faint);writing-mode:vertical-rl}
.page-rail .rail-line{width:1px;height:60px;background:linear-gradient(180deg,var(--green),transparent)}
.page-rail ol{list-style:none;display:flex;flex-direction:column;gap:13px;padding:0;margin:0}
.page-rail .rn{font-family:var(--font-mono);font-size:11px;color:#9FB8C6;display:grid;place-items:center;width:22px;height:22px;border:1px solid transparent;border-radius:50%;transition:all .32s var(--ease);line-height:1}
.page-rail li{position:relative}
.page-rail li.on .rn{color:#fff;border-color:var(--green);background:var(--green);box-shadow:0 0 0 5px var(--green-soft)}
.page-rail .rail-side{font-size:10px;letter-spacing:.32em;color:var(--text-faint)}
@media (max-width:900px){.page-rail{display:none}}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}