/* ============================================================
   阅脑科技 Readingbrain (RBT) — Official Website Design System
   Visual world: 白 / 银灰 / 冷蓝 / 深海军蓝 · 真实 · 高级 · 克制
   Reference: clean cloud-vendor landing (Tencent Cloud AIE style)
   ============================================================ */

:root{
  --navy:#0a2540;          /* deep navy — nav & headings */
  --navy-2:#123a63;
  --ink:#12283d;           /* body headings */
  --text:#33475b;          /* body text */
  --muted:#6b7d8f;         /* secondary text */
  --silver:#93a4b3;
  --blue:#1f6fd0;          /* primary medical/tech blue */
  --blue-2:#2f8ce0;
  --cyan:#1fb0bd;          /* accent */
  --line:#e2ebf3;
  --line-2:#cddbe8;
  --bg:#ffffff;
  --bg-alt:#f4f9fd;
  --bg-soft:#eaf3fb;
  --grad:linear-gradient(120deg,#1f6fd0,#1fb0bd);
  --shadow-sm:0 6px 20px rgba(18,58,99,.06);
  --shadow:0 18px 50px rgba(18,58,99,.10);
  --shadow-lg:0 30px 70px rgba(12,45,78,.16);
  --r-sm:10px; --r:16px; --r-lg:24px;
  --maxw:1240px;
  --nav-h:66px; --topbar-h:38px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav-h) + 14px)}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;font-size:16px;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.25;margin:0;font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
::selection{background:rgba(31,111,208,.18)}

.container{width:min(var(--maxw),92vw);margin-inline:auto}
.section{padding:clamp(56px,8vw,110px) 0;position:relative}
.section--alt{background:var(--bg-alt)}
.section--soft{background:linear-gradient(180deg,#fff,#f2f8fd)}
.section--navy{background:radial-gradient(120% 120% at 80% 0%,#123a63,#0a2540 60%);color:#dce9f5}
.section--navy h1,.section--navy h2,.section--navy h3{color:#fff}

/* ---------- eyebrow / titles ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--blue)}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--grad);border-radius:2px}
.sec-head{max-width:760px;margin-bottom:clamp(28px,4vw,52px)}
.sec-head.center{margin-inline:auto;text-align:center}
.sec-head.center .eyebrow{justify-content:center}
.sec-title{font-size:clamp(26px,3.6vw,42px);margin:14px 0 16px}
.sec-desc{font-size:clamp(15px,1.2vw,18px);color:var(--muted);line-height:1.85}
.section--navy .sec-desc{color:#a9c4dc}
.lead{font-size:clamp(16px,1.3vw,19px);color:var(--muted);line-height:1.9}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:13px 26px;font-size:15px;font-weight:700;transition:.25s;white-space:nowrap}
.btn--primary{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(31,111,208,.28)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(31,111,208,.36)}
.btn--ghost{background:#fff;color:var(--navy);border-color:var(--line-2)}
.btn--ghost:hover{border-color:var(--blue);color:var(--blue)}
.btn--outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn--outline-light:hover{background:rgba(255,255,255,.1)}
.btn--sm{padding:9px 18px;font-size:13.5px}
.btn .arw{transition:transform .25s}.btn:hover .arw{transform:translateX(4px)}

/* ---------- status badges (CURRENT/PILOT/TARGET/HORIZON) ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:800;letter-spacing:.05em;padding:4px 11px;border-radius:999px;line-height:1.4}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge--current{color:#1a8f6a;background:#e5f7ef}
.badge--pilot{color:#b8791f;background:#fdf3e0}
.badge--target{color:#1f6fd0;background:#e8f1fc}
.badge--horizon{color:#7b4fd0;background:#efeafc}
.badge--research{color:#2f7d8a;background:#e4f4f6}

/* ---------- topbar + nav ---------- */
.topbar{height:var(--topbar-h);background:var(--navy);color:#9fc0dd;font-size:12.5px;display:flex;align-items:center}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar b{color:#fff;font-weight:600}
.topbar .tb-right{display:flex;gap:18px;align-items:center}
.topbar .tb-right span{opacity:.85}

.nav{position:sticky;top:0;z-index:80;height:var(--nav-h);background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .3s}
.nav.is-stuck{box-shadow:0 8px 24px rgba(18,58,99,.08)}
.nav .container{height:100%;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand img{width:38px;height:38px;object-fit:contain}
.brand .bn{display:flex;flex-direction:column;line-height:1.1}
.brand .bn b{font-size:19px;color:var(--navy);letter-spacing:.02em}
.brand .bn small{font-size:10px;letter-spacing:.22em;color:var(--silver);font-weight:700}

.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links>a,.nav-links>.drop>.drop-btn{display:inline-flex;align-items:center;gap:5px;padding:9px 13px;border-radius:10px;font-size:14.5px;font-weight:600;color:#42586c;transition:.2s;background:none;border:0}
.nav-links>a:hover,.nav-links>.drop:hover>.drop-btn{color:var(--blue);background:var(--bg-soft)}
.nav-links>a.active{color:var(--blue);background:var(--bg-soft)}
.nav-links>.drop.active>.drop-btn{color:var(--blue);background:var(--bg-soft)}

.drop{position:relative}
.drop-btn .caret{border:5px solid transparent;border-top-color:currentColor;margin-top:3px}
.drop-menu{position:absolute;top:calc(100% + 8px);left:50%;transform:translateX(-50%) translateY(8px);min-width:210px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;opacity:0;visibility:hidden;transition:.2s}
.drop:hover .drop-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop-menu a{display:flex;flex-direction:column;padding:10px 12px;border-radius:10px;font-size:14px;color:#3a5064}
.drop-menu a small{font-size:11.5px;color:var(--silver)}
.drop-menu a:hover{background:var(--bg-soft);color:var(--blue)}
.nav-cta{display:flex;align-items:center;gap:12px;margin-left:10px;flex:none}
.lang{display:flex;gap:2px;font-size:12.5px;font-weight:700;color:var(--silver);border:1px solid var(--line);border-radius:999px;padding:3px}
.lang b{padding:2px 9px;border-radius:999px}
.lang b.on{background:var(--navy);color:#fff}
.nav-burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:#fff;flex-direction:column;gap:4px;align-items:center;justify-content:center}
.nav-burger span{width:18px;height:2px;background:var(--navy);border-radius:2px}

/* ---------- cards & grids ---------- */
.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)}
.g-6{grid-template-columns:repeat(6,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;transition:.3s;position:relative}
.card--hover:hover{transform:translateY(-6px);border-color:#b9d6ef;box-shadow:var(--shadow)}
.card__ico{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#e7f2fc,#e2f7f4);color:var(--blue);font-size:24px;margin-bottom:16px}
.card h3{font-size:19px;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.75}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--blue);font-weight:700;font-size:14px}

/* capability strip */
.cap-strip{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.cap-strip a{background:#fff;padding:22px 16px;text-align:center;transition:.25s}
.cap-strip a:hover{background:var(--bg-soft)}
.cap-strip .ci{width:40px;height:40px;margin:0 auto 10px;border-radius:11px;display:grid;place-items:center;background:linear-gradient(135deg,#e7f2fc,#e2f7f4);color:var(--blue);font-size:19px}
.cap-strip b{display:block;font-size:14.5px;color:var(--ink)}
.cap-strip small{font-size:11px;letter-spacing:.08em;color:var(--silver);text-transform:uppercase}

/* stat band */
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{border-left:2px solid var(--line);padding-left:20px}
.stat:first-child{border-left-color:var(--blue)}
.stat b{display:block;font-size:clamp(30px,3.6vw,44px);font-weight:800;color:var(--navy);line-height:1}
.stat b .u{font-size:18px;color:var(--blue);margin-left:2px}
.stat span{font-size:13.5px;color:var(--muted)}

/* feature row (image + text alternating) */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,70px);align-items:center}
.feature+.feature{margin-top:clamp(48px,7vw,90px)}
.feature--rev .feature__media{order:2}
.feature__media{border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);position:relative;background:var(--navy)}
.feature__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.feature__media .tag{position:absolute;left:16px;top:16px;background:rgba(10,37,64,.82);color:#cfe3f3;font-size:12px;padding:6px 12px;border-radius:999px;backdrop-filter:blur(6px)}
.feature h3{font-size:clamp(21px,2.3vw,30px);margin-bottom:14px}
.feature .lead{margin-bottom:18px}
.check-list li{position:relative;padding-left:30px;margin:11px 0;font-size:15px;color:#3c5163}
.check-list li::before{content:"";position:absolute;left:0;top:5px;width:18px;height:18px;border-radius:50%;background:var(--bg-soft)}
.check-list li::after{content:"";position:absolute;left:6px;top:9px;width:6px;height:9px;border:2px solid var(--blue);border-top:0;border-left:0;transform:rotate(42deg)}

/* pills / tags */
.pills{display:flex;flex-wrap:wrap;gap:10px}
.pill{padding:8px 15px;border:1px solid var(--line-2);border-radius:999px;font-size:13px;color:#4a6072;background:#fff}
.pill--soft{background:var(--bg-soft);border-color:transparent;color:var(--blue)}

/* tabs */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.tab{border:1px solid var(--line-2);background:#fff;color:#54697b;padding:11px 20px;border-radius:999px;font-weight:700;font-size:14px;transition:.2s}
.tab.active{color:#fff;background:var(--grad);border-color:transparent;box-shadow:0 10px 22px rgba(31,111,208,.25)}
.tab-panel{display:none}.tab-panel.active{display:block;animation:fade .4s}
@keyframes fade{from{opacity:0;transform:translateY(10px)}}

/* timeline / river */
.river{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:18px;margin-top:20px}
.river::before{content:"";position:absolute;left:0;right:0;top:26px;height:2px;background:linear-gradient(90deg,var(--blue),var(--cyan))}
.river .node{position:relative;padding-top:56px}
.river .node .dot{position:absolute;top:14px;left:0;width:26px;height:26px;border-radius:50%;background:#fff;border:2px solid var(--blue);color:var(--blue);font-weight:800;font-size:12px;display:grid;place-items:center}
.river .node h4{font-size:16px;margin-bottom:4px}
.river .node .en{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--silver);margin-bottom:12px}
.river .node li{font-size:13px;color:var(--muted);padding:3px 0 3px 14px;position:relative}
.river .node li::before{content:"";position:absolute;left:0;top:11px;width:5px;height:5px;border-radius:50%;background:var(--cyan)}

/* layered platform (core) */
.layers{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.layer{border:1px solid var(--line);border-radius:var(--r);padding:22px;background:#fff;transition:.3s}
.layer:hover{border-color:#b9d6ef;box-shadow:var(--shadow-sm);transform:translateY(-4px)}
.layer .lh{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.layer .lh .n{width:34px;height:34px;border-radius:10px;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px}
.layer .lh b{font-size:16px}
.layer .lh small{display:block;font-size:11px;letter-spacing:.08em;color:var(--silver);text-transform:uppercase}
.layer li{font-size:13.5px;color:var(--muted);padding:4px 0 4px 16px;position:relative}
.layer li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:2px;background:var(--cyan)}

/* product cards (NeuroPod) */
.pod-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:.3s;display:flex;flex-direction:column}
.pod-card:hover{box-shadow:var(--shadow);transform:translateY(-6px)}
.pod-card.feat{border-color:#b9d6ef;box-shadow:var(--shadow-sm)}
.pod-card__media{background:linear-gradient(160deg,#f2f8fd,#e9f3fb);position:relative;padding:20px;aspect-ratio:16/10;display:grid;place-items:center}
.pod-card__media img{width:100%;height:100%;object-fit:cover;border-radius:12px}
.pod-card__media .badge{position:absolute;top:14px;left:14px}
.pod-card__body{padding:22px 24px 26px;flex:1;display:flex;flex-direction:column}
.pod-card__body h3{font-size:21px;display:flex;align-items:baseline;gap:8px}
.pod-card__body .sub{color:var(--blue);font-weight:700;font-size:13px;margin:2px 0 12px}
.pod-card__body ul{margin:6px 0 18px}
.pod-card__body li{font-size:13.5px;color:var(--muted);padding:4px 0 4px 18px;position:relative}
.pod-card__body li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.pod-card__body .foot{margin-top:auto;display:flex;gap:10px;flex-wrap:wrap}
/* version toggle (标准版/豪华版) */
.ver-toggle{display:inline-flex;background:var(--bg-soft);border-radius:999px;padding:4px;gap:4px}
.ver-toggle button{border:0;background:transparent;padding:8px 18px;border-radius:999px;font-weight:700;font-size:13.5px;color:#5a7183}
.ver-toggle button.active{background:#fff;color:var(--blue);box-shadow:var(--shadow-sm)}

/* comparison table */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-size:14px}
.tbl th,.tbl td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
.tbl thead th{background:var(--navy);color:#eaf3fb;font-weight:700}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl td b{color:var(--ink)}
.meter{height:7px;border-radius:6px;background:var(--bg-soft);overflow:hidden;min-width:90px}
.meter i{display:block;height:100%;background:var(--grad);border-radius:6px}

/* quote band */
.quote{background:radial-gradient(120% 140% at 15% 10%,#123a63,#0a2540 65%);color:#eaf3fb;border-radius:var(--r-lg);padding:clamp(34px,5vw,64px);position:relative;overflow:hidden}
.quote .qm{font-size:120px;line-height:.6;color:rgba(255,255,255,.12);font-family:Georgia,serif;position:absolute;top:34px;left:24px}
.quote h3{color:#fff;font-size:clamp(20px,2.4vw,30px);font-weight:800;position:relative}
.quote p{color:#a9c4dc;margin-top:12px;position:relative}

/* accordion (FAQ) */
.acc{border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow:hidden}
.acc+.acc{margin-top:12px}
.acc__q{width:100%;text-align:left;background:none;border:0;padding:20px 22px;font-size:16px;font-weight:700;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:16px}
.acc__q .pl{flex:none;width:24px;height:24px;border-radius:50%;background:var(--bg-soft);color:var(--blue);display:grid;place-items:center;font-size:18px;transition:.3s}
.acc.open .acc__q .pl{transform:rotate(45deg);background:var(--blue);color:#fff}
.acc__a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.acc__a div{padding:0 22px 22px;color:var(--muted);font-size:14.5px;line-height:1.8}

/* horizon (dark sub-world) */
.horizon-bg{background:#05080f;color:#c7d2df;position:relative;overflow:hidden}
.horizon-bg::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 50% at 50% 0%,rgba(40,70,120,.35),transparent 70%),radial-gradient(40% 40% at 85% 80%,rgba(120,40,60,.18),transparent 70%)}
.horizon-bg .container{position:relative}
.hz-badge{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.28em;color:#ff6b6b;font-weight:800;text-transform:uppercase}
.hz-badge::before{content:"";width:8px;height:8px;border-radius:50%;background:#ff6b6b;box-shadow:0 0 12px #ff6b6b}
.hz-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:var(--r);padding:24px;transition:.3s;backdrop-filter:blur(4px)}
.hz-card:hover{border-color:rgba(120,170,255,.5);background:rgba(255,255,255,.07);transform:translateY(-4px)}
.hz-card h3{color:#eaf1f8;font-size:17px;display:flex;justify-content:space-between;gap:10px;align-items:baseline}
.hz-card h3 small{font-size:12px;color:#7f93a8;font-weight:600}
.hz-card p{color:#93a6ba;font-size:13.5px;margin-top:8px}
.hz-card .st{margin-top:14px}
.horizon-bg .badge--horizon{background:rgba(123,79,208,.18);color:#b79bff}
.horizon-bg .badge--target{background:rgba(31,111,208,.2);color:#7fb6f0}
.horizon-bg .badge--research{background:rgba(47,125,138,.22);color:#7fd0dc}

/* breadcrumb-ish page hero (inner pages) */
.page-hero{background:radial-gradient(120% 130% at 82% 0%,#164a7c,#0a2540 60%);color:#fff;padding:clamp(60px,9vw,110px) 0 clamp(48px,7vw,86px);position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-8%;top:-30%;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(31,176,189,.22),transparent 62%)}
.page-hero .container{position:relative}
.page-hero h1{color:#fff;font-size:clamp(30px,4.6vw,54px);margin:16px 0 14px}
.page-hero .ph-en{font-size:clamp(14px,1.4vw,18px);letter-spacing:.14em;text-transform:uppercase;color:#6fb3e6;font-weight:700}
.page-hero p{color:#b9d2e8;max-width:720px;font-size:clamp(15px,1.3vw,18px)}
.page-hero .crumb{font-size:13px;color:#8fb2d0;margin-bottom:6px}
.page-hero .crumb a:hover{color:#fff}

/* ---------- science page: section header with right EN note ---------- */
.sec-head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:28px;flex-wrap:wrap;margin-bottom:clamp(28px,4vw,50px)}
.sec-head--row .sec-head-main{max-width:760px}
.sec-head--row .sec-head-main .sec-title{margin-bottom:12px}
.sec-note{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--silver);text-align:right;line-height:1.8;max-width:300px}
.sec-note a{display:inline-block;margin-top:8px;color:var(--blue);font-weight:800;text-transform:none;letter-spacing:0;font-size:14px}

/* ---------- science page: full-bleed photo hero ---------- */
.sci-hero{position:relative;background:#eef5fb url("../img/science/hero.jpg") right center/cover no-repeat;border-bottom:1px solid var(--line);overflow:hidden}
.sci-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#eef5fb 0%,#eef5fb 30%,rgba(238,245,251,.86) 47%,rgba(238,245,251,.25) 64%,rgba(238,245,251,0) 84%)}
.sci-hero .container{position:relative;z-index:1;display:block;padding:clamp(48px,6.5vw,84px) 0;min-height:clamp(330px,34vw,430px)}
.sci-hero__text{max-width:600px;padding-top:clamp(16px,2.2vw,32px)}
.sci-hero__en{font-size:clamp(15px,1.5vw,20px);letter-spacing:.1em;font-weight:800;color:var(--blue);text-transform:uppercase}
.sci-hero h1{font-size:clamp(30px,4.2vw,50px);margin:8px 0 18px;color:var(--navy)}
.sci-hero__cn{font-size:clamp(15px,1.25vw,17px);color:#3c5163;line-height:1.95;max-width:520px}
.sci-hero__enp{font-size:13px;color:var(--muted);line-height:1.7;margin-top:14px;max-width:520px}
.sci-hero .btn{margin-top:24px}
.sci-hero__rail{position:absolute;top:clamp(48px,6.5vw,84px);right:0;text-align:right;font-weight:800;color:var(--navy);line-height:1.65;font-size:clamp(18px,2vw,27px);text-shadow:0 0 6px rgba(238,245,251,.95),0 0 14px rgba(238,245,251,.9),0 1px 0 rgba(238,245,251,.9)}
.sci-hero__rail small{display:block;color:var(--silver);letter-spacing:.18em;font-size:10.5px;font-weight:700;margin-top:10px}
.sci-hero__books{position:absolute;bottom:clamp(20px,3vw,34px);right:0;width:min(30%,220px);border-radius:10px;box-shadow:var(--shadow-lg);border:4px solid #fff}

/* ---------- science page: five stages ---------- */
.stages{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.stage{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 18px 20px;display:flex;flex-direction:column;transition:.3s}
.stage:hover{border-color:#b9d6ef;box-shadow:var(--shadow-sm);transform:translateY(-5px)}
.stage__top{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}
.stage__no{font-size:34px;font-weight:800;line-height:1;color:rgba(31,111,208,.14);-webkit-text-stroke:1.4px var(--blue)}
.stage__title{font-size:17px;color:var(--ink);font-weight:800}
.stage__en{font-size:11px;letter-spacing:.05em;color:var(--silver);text-transform:uppercase;margin:2px 0 12px}
.stage__body{display:flex;gap:14px;align-items:flex-start;margin-top:14px}
.stage__thumb{width:88px;height:88px;flex:none;object-fit:cover;border-radius:10px;background:var(--navy);display:block}
.stage ul{margin:0;flex:1;min-width:0}
.stage li{font-size:12.5px;color:var(--muted);padding:3px 0 3px 13px;position:relative}
.stage li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--cyan)}
.stage:not(:last-child)::after{content:"\203A";position:absolute;right:-13px;top:50%;transform:translateY(-50%);font-size:24px;font-weight:800;color:var(--blue);z-index:2}

/* ---------- science page: scientific foundations ---------- */
.found-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.found{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:20px;display:flex;flex-direction:column;transition:.3s}
.found:hover{border-color:#b9d6ef;box-shadow:var(--shadow-sm);transform:translateY(-4px)}
.found__hd{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.found__ico{width:38px;height:38px;flex:none;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,#e7f2fc,#e2f7f4);color:var(--blue);font-size:19px}
.found__hd b{font-size:15px;color:var(--ink)}
.found p{font-size:13px;color:var(--muted);line-height:1.7;margin-bottom:14px}
.found__img{margin-top:auto;width:100%;aspect-ratio:2/1;object-fit:contain;background:#f7fbfe;border:1px solid var(--line);border-radius:10px;padding:8px}

/* ---------- science page: lab to reality impact flow ---------- */
.impact{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;align-items:stretch}
.impact-step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 16px;text-align:center;transition:.3s}
.impact-step:hover{border-color:#b9d6ef;box-shadow:var(--shadow-sm)}
.impact-step .ii{width:52px;height:52px;margin:0 auto 12px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#e7f2fc,#e2f7f4);color:var(--blue);font-size:24px}
.impact-step b{display:block;font-size:16px;color:var(--ink)}
.impact-step .en{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--silver);margin:2px 0 8px}
.impact-step p{font-size:12.5px;color:var(--muted);line-height:1.6}
.impact-step--dev{background:linear-gradient(160deg,#f2f8fd,#e9f3fb)}
.impact-step--dev img{width:100%;max-width:120px;margin:0 auto 10px;border-radius:10px}
.impact-step:not(:last-child)::after{content:"\203A";position:absolute;right:-11px;top:50%;transform:translateY(-50%);font-size:26px;font-weight:800;color:var(--blue);z-index:2}
.impact-banner{margin-top:28px;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-sm);margin-left:auto;max-width:760px;width:100%}
.impact-banner img{width:100%;object-fit:cover;aspect-ratio:372/123;max-height:230px}

/* ---------- products page: dark full-bleed hero (N1·N2·N3 photo right) ---------- */
.prod-hero{--ph-left:max(480px,34vw);position:relative;background:#06182b;color:#fff;overflow:hidden;min-height:clamp(430px,37.5vw,560px);display:flex;align-items:flex-end}
.prod-hero__shot{position:absolute;right:0;bottom:0;top:auto;width:calc(100% - var(--ph-left));max-width:1010px;height:auto;object-fit:cover;z-index:0;-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,0),#000 88px);mask-image:linear-gradient(180deg,rgba(0,0,0,0),#000 88px)}
.prod-hero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,#06182b 0,#06182b calc(var(--ph-left) - 40px),rgba(6,24,43,.86) calc(var(--ph-left) + 6px),rgba(6,24,43,.34) calc(var(--ph-left) + 52px),rgba(6,24,43,0) calc(var(--ph-left) + 120px))}
.prod-hero .container{position:relative;z-index:2;padding:clamp(26px,3vw,40px) 0 clamp(24px,2.6vw,34px)}
.prod-hero__kicker{font-size:13px;letter-spacing:.32em;color:#cfe0f5}
.prod-hero__kicker span{margin:0 8px;color:#5f89b8}
.prod-hero__kicker em{display:block;margin-top:6px;font-style:normal;font-size:11.5px;letter-spacing:.2em;color:#8fb4d8}
.prod-hero__en{margin-top:18px;font-size:clamp(26px,3.2vw,44px);font-weight:300;color:#fff;line-height:1.1}
.prod-hero h1{margin-top:2px;font-size:clamp(30px,3.8vw,54px);font-weight:800;letter-spacing:.02em;line-height:1.16;color:#fff}
.prod-hero__sub{margin-top:14px;font-size:clamp(13.5px,1.15vw,17px);font-weight:600;line-height:1.75;color:#dbe8f8}
.prod-hero__cn{margin-top:9px;max-width:min(430px,calc(var(--ph-left) - 60px));font-size:12.5px;line-height:1.75;color:#93b3d6}
.prod-hero .btn--primary{margin-top:20px;background:var(--blue);border-color:var(--blue);color:#fff}
.prod-hero .btn--primary:hover{background:#1a5fc4;border-color:#1a5fc4;color:#fff}
.prod-hero__stats{display:flex;align-items:flex-end;gap:clamp(20px,2.6vw,40px);margin-top:clamp(22px,2.6vw,34px)}
.prod-hero__stats .st{position:relative;padding-right:clamp(20px,2.6vw,40px)}
.prod-hero__stats .st:not(:last-child)::after{content:"";position:absolute;right:0;bottom:5px;width:1px;height:34px;background:rgba(147,179,214,.32)}
.prod-hero__stats .st b{display:block;font-size:clamp(22px,2.4vw,32px);font-weight:800;line-height:1.1;color:#fff}
.prod-hero__stats .st span{display:block;margin-top:5px;font-size:12px;color:#a8c4e2}

/* ---------- products page: section head with left accent bar ---------- */
.psec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:22px}
.psec-head .l{display:flex;gap:12px;align-items:flex-start}
.psec-head .bar{width:4px;height:38px;border-radius:3px;flex:none;background:linear-gradient(180deg,var(--blue),var(--cyan))}
.psec-head h2{font-size:clamp(20px,2.3vw,28px);font-weight:800;color:var(--navy);line-height:1.2}
.psec-head .en{display:block;margin-top:4px;font-size:11.5px;font-weight:700;letter-spacing:.16em;color:#8ea3bd;text-transform:uppercase}
.psec-head .note{text-align:right}
.psec-head .note b{display:block;font-size:14px;color:var(--ink);font-weight:700}
.psec-head .note span{display:block;margin-top:3px;font-size:11px;color:var(--muted);letter-spacing:.05em}
.psec-head .link{font-size:14px;font-weight:700;color:var(--blue);white-space:nowrap}
.psec-head .link:hover{text-decoration:underline}

/* ---------- products page: core lineup (N1 / N2 / N3) ---------- */
.pods{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.pod{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.pod__hd{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pod__hd .nm{font-size:clamp(20px,2.1vw,26px);font-weight:800;color:var(--navy)}
.pod__hd .nm i{font-style:italic;font-size:1.2em;margin-right:6px;color:var(--blue)}
.pod__hd .tp{font-size:clamp(15px,1.4vw,18px);font-weight:700;color:var(--navy)}
.pod__tag{margin-left:auto;font-size:11px;font-weight:700;color:#fff;background:var(--blue);border-radius:999px;padding:5px 12px;white-space:nowrap}
.pod__tag--build{background:#4a8fe0}
.pod__tag--target{background:#f59e0b}
.pod__sub{margin-top:9px;font-size:13px;color:var(--muted)}
.pod__body{display:flex;gap:14px;align-items:center;margin-top:14px}
.pod__img{width:118px;height:150px;object-fit:contain;flex:none}
.pod ul{list-style:none;margin:0;padding:0;flex:1;display:grid;gap:9px}
.pod li{position:relative;padding-left:15px;font-size:13.5px;font-weight:600;color:var(--ink)}
.pod li::before{content:"";position:absolute;left:0;top:.55em;width:5px;height:5px;border-radius:50%;background:var(--blue)}
.pod .btn{margin-top:16px;align-self:flex-start;border-color:var(--blue);color:var(--blue)}
.pod .btn:hover{background:var(--blue);color:#fff}

/* ---------- products page: software platform ---------- */
.sw{display:grid;grid-template-columns:186px minmax(0,1fr) 258px;gap:18px;align-items:stretch}
.sw__menu{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:8px 14px;display:grid;align-content:center;gap:2px}
.sw__menu .mi{display:flex;align-items:center;gap:10px;padding:11px 2px;font-size:14px;font-weight:600;color:var(--ink);border-bottom:1px solid #eef2f7}
.sw__menu .mi:last-child{border-bottom:0}
.sw__menu .mi .ic{width:22px;height:22px;flex:none;border-radius:6px;background:#e9f2fd;color:var(--blue);display:grid;place-items:center;font-size:12px;font-weight:700}
.sw__menu .mi:hover{color:var(--blue)}
.sw__main{display:grid;gap:12px;min-width:0}
.sw__chips{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.sw__chip{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;display:flex;align-items:center;gap:10px;box-shadow:var(--shadow)}
.sw__chip .ic{width:30px;height:30px;flex:none;border-radius:8px;background:#e9f2fd;color:var(--blue);display:grid;place-items:center;font-size:15px}
.sw__chip b{display:block;font-size:13px;color:var(--navy)}
.sw__chip span{display:block;font-size:10px;letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.sw__shot{width:100%;height:auto;display:block;border-radius:12px}
.sw__side{display:grid;gap:12px;align-content:center}
.sw__quote{background:linear-gradient(160deg,#f2f7fd,#e7f0fb);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.sw__quote b{display:block;font-size:16.5px;line-height:1.7;color:var(--navy)}
.sw__quote span{display:block;margin-top:10px;font-size:11px;line-height:1.7;letter-spacing:.04em;color:var(--muted)}

/* ---------- products page: research & professional tools ---------- */
.tools{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.tool{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:14px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.tool:hover{transform:translateY(-4px);box-shadow:0 14px 32px rgba(10,35,70,.1)}
.tool img{width:100%;height:auto;display:block;border-radius:8px;background:#fff}
.tool .row{display:flex;align-items:center;gap:8px;margin-top:12px}
.tool .row .ic{width:26px;height:26px;flex:none;border-radius:7px;background:#e9f2fd;color:var(--blue);display:grid;place-items:center;font-size:13px}
.tool .row b{display:block;font-size:14px;color:var(--navy);line-height:1.25}
.tool .en{display:block;font-size:10px;letter-spacing:.06em;color:var(--muted);text-transform:uppercase}
.tool .tags{margin-top:9px;font-size:11.5px;color:var(--ink-2);line-height:1.5}

/* ---------- products page: industry scenarios ---------- */
.iscen{display:grid;grid-template-columns:repeat(8,1fr);gap:12px}
.iscen figure{margin:0}
.iscen img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:10px;display:block}
.iscen .row{display:flex;align-items:center;gap:7px;margin-top:10px}
.iscen .row .ic{width:24px;height:24px;flex:none;border-radius:50%;background:#e9f2fd;color:var(--blue);display:grid;place-items:center;font-size:12px}
.iscen figcaption b{display:block;font-size:13.5px;color:var(--navy);line-height:1.2}
.iscen figcaption span{display:block;font-size:9.5px;letter-spacing:.05em;color:var(--muted);text-transform:uppercase}

/* ---------- products page: mountain sunrise CTA ---------- */
.prod-cta{position:relative;color:#fff;overflow:hidden;background:#0b1a2b}
.prod-cta__bg{position:absolute;inset:0;z-index:0;background:url("../img/products/mountain-band.jpg") center/100% 100% no-repeat;filter:blur(1.5px)}
.prod-cta::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(6,18,34,.82) 0%,rgba(6,18,34,.42) 34%,rgba(6,18,34,.14) 58%,rgba(6,18,34,.48) 100%)}
.prod-cta .container{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;padding:clamp(32px,3.6vw,50px) 0}
.prod-cta h2{font-size:clamp(18px,2vw,25px);font-weight:700;line-height:1.62;color:#fff;text-shadow:0 1px 12px rgba(4,18,38,.6)}
.prod-cta .en{margin-top:9px;font-size:11.5px;letter-spacing:.14em;color:#c9dbf0;text-shadow:0 1px 10px rgba(4,18,38,.65)}
.prod-cta .btn--ghost{border-color:rgba(255,255,255,.68);color:#fff;background:rgba(8,24,44,.28)}
.prod-cta .btn--ghost:hover{background:#fff;color:var(--navy);border-color:#fff}

/* ---------- products page: five category cards ---------- */
.pcats{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.pcat{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 18px 16px;display:flex;flex-direction:column;transition:.3s}
.pcat:hover{border-color:#b9d6ef;box-shadow:var(--shadow-sm);transform:translateY(-5px)}
.pcat__top{display:flex;align-items:center;gap:10px}
.pcat__no{font-size:30px;font-weight:800;line-height:1;color:rgba(31,111,208,.14);-webkit-text-stroke:1.4px var(--blue)}
.pcat__t b{display:block;font-size:15.5px;color:var(--ink);white-space:nowrap}
.pcat__t span{display:block;font-size:10px;letter-spacing:.07em;text-transform:uppercase;color:var(--silver);margin-top:3px}
.pcat__desc{font-size:12.5px;color:var(--muted);line-height:1.75;margin:10px 0 12px}
.pcat__img{width:100%;aspect-ratio:2/1;object-fit:cover;border-radius:10px;background:#f2f7fc;display:block}
.pcat__list{list-style:none;margin:8px 0 0;padding:0}
.pcat__list li{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-2);margin:7px 0}
.pcat__list li i{font-style:normal;color:var(--blue);font-size:14px;width:16px;text-align:center;flex:none}
.pcat .more{margin-top:auto;padding-top:14px}

/* ---------- products page: one core orbit diagram ---------- */
.core-orbit{display:grid;grid-template-columns:minmax(0,300px) 1fr minmax(0,300px);gap:28px;align-items:center}
.core-orbit .side-en{font-size:12px;color:var(--muted);line-height:1.8;margin-top:12px}
.core-orbit .sec-title{font-size:clamp(22px,2vw,30px);white-space:nowrap}
.core-orbit .side-r{font-size:13.5px;color:var(--ink-2);line-height:1.9;margin-top:12px}
.orbit-stage{position:relative;height:340px}
.orbit-stage::before{content:"";position:absolute;left:50%;top:50%;width:78%;height:56%;transform:translate(-50%,-50%);border:1.5px dashed #bcd8ef;border-radius:50%}
.orbit-core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(62%,330px);background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:22px 18px;text-align:center;z-index:2}
.orbit-core img{width:56px;height:56px;margin-bottom:10px}
.orbit-core b{display:block;font-size:16.5px;color:var(--ink)}
.orbit-core span{display:block;font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--silver);margin-top:5px}
.o-node{position:absolute;display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700;color:var(--ink);white-space:nowrap;z-index:3}
.o-node i{font-style:normal;color:var(--blue);font-weight:800}
.o-node .oi{width:38px;height:38px;flex:none;border-radius:50%;background:#fff;border:1.5px solid #cde2f5;box-shadow:var(--shadow-sm);display:grid;place-items:center;color:var(--blue);font-size:16px}
.o-1{left:50%;top:-2px;transform:translateX(-50%)}
.o-2{left:1%;top:24%}
.o-3{right:1%;top:24%}
.o-4{left:1%;bottom:10%}
.o-5{right:1%;bottom:10%}

/* ---------- products page: product status band ---------- */
.pstatus{display:flex;flex-wrap:wrap;align-items:center;gap:14px 34px;padding:22px 26px;border:1px solid var(--line);border-radius:var(--r);background:#fff;box-shadow:var(--shadow-sm)}
.pstatus__label b{display:block;font-size:16px;color:var(--ink)}
.pstatus__label span{display:block;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--silver);margin-top:3px}
.pstatus .ps{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-2)}
.pstatus .ps em{font-style:normal;font-weight:800}
.pstatus .ps small{color:var(--muted)}
.pstatus .dot{width:11px;height:11px;border-radius:50%;flex:none}
.pstatus .closing{margin-left:auto;font-size:13px;font-weight:700;color:var(--navy)}
.pstatus .closing span{display:block;font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--silver);font-weight:600;margin-top:4px}

/* ---------- platform page: full-bleed hero ---------- */
.pl-hero{position:relative;background:#eef5fb;border-bottom:1px solid var(--line);overflow:hidden;padding-bottom:74px}
.pl-hero__shot{position:absolute;right:0;top:0;height:100%;width:auto;max-width:64%;object-fit:contain;z-index:0;display:block}
.pl-hero::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,#eef5fb 0%,#eef5fb 30%,rgba(238,245,251,.62) 42%,rgba(238,245,251,0) 53%)}
.pl-hero .container{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,470px) 1fr;align-items:start;padding:clamp(38px,4.6vw,58px) 0 0}
.pl-hero__eyebrow{font-size:14px;font-weight:700;letter-spacing:.16em;color:var(--navy)}
.pl-hero__eyebrow small{display:block;font-size:10px;letter-spacing:.18em;color:var(--silver);margin-top:6px;font-weight:600}
.pl-hero__en{font-size:clamp(24px,2.7vw,36px);font-weight:800;color:var(--navy);margin:22px 0 2px}
.pl-hero h1{font-size:clamp(28px,3.3vw,44px);margin:0 0 18px;color:var(--navy)}
.pl-hero__cn{font-size:16px;font-weight:700;color:var(--ink);line-height:1.7;max-width:440px}
.pl-hero__enp{font-size:13px;color:var(--muted);line-height:1.75;margin-top:12px;max-width:440px}
.pl-hero__btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}

/* ---------- platform page: capability strip ---------- */
.pcaps{display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;margin-top:-46px;position:relative;z-index:3}
.pcap{display:flex;align-items:center;gap:11px;padding:20px 16px;border-right:1px solid var(--line)}
.pcap:last-child{border-right:0}
.pcap .ci{width:34px;height:34px;flex:none;color:var(--blue);font-size:27px;display:grid;place-items:center;line-height:1}
.pcap b{display:block;font-size:13.5px;color:var(--ink);white-space:nowrap}
.pcap span{display:block;font-size:9px;letter-spacing:.07em;text-transform:uppercase;color:var(--silver);margin-top:3px}

/* ---------- platform page: architecture rows ---------- */
.arch-row{display:grid;grid-template-columns:170px 20px minmax(0,1fr) 214px;gap:10px;align-items:center;margin-bottom:20px}
.arch-tag{display:flex;gap:11px;align-items:flex-start}
.arch-tag .no{width:32px;height:32px;flex:none;border-radius:9px;background:var(--blue);color:#fff;font-weight:800;display:grid;place-items:center;font-size:14px}
.arch-tag b{display:block;font-size:15.5px;color:var(--ink)}
.arch-tag .en{display:block;font-size:10.5px;color:var(--silver);text-transform:uppercase;letter-spacing:.04em;margin-top:2px}
.arch-tag p{margin-top:9px;font-size:12px;color:var(--ink-2);background:#eef5fb;border-radius:8px;padding:7px 10px;line-height:1.5}
.arch-arrow{color:var(--blue);font-size:15px;text-align:center}
.arch-panel{width:100%;display:block;border-radius:14px}
.arch-side{border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:#fff}
.arch-side b{display:block;font-size:14.5px;color:var(--navy)}
.arch-side .en{display:block;font-size:9.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--silver);margin:2px 0 10px}
.arch-side ul{list-style:none;margin:0;padding:0}
.arch-side li{position:relative;padding-left:14px;font-size:12.5px;color:var(--ink-2);margin:6px 0}
.arch-side li::before{content:"";position:absolute;left:0;top:.6em;width:5px;height:5px;border-radius:50%;background:var(--blue)}

/* ---------- platform page: scenario row ---------- */
.scens{display:grid;grid-template-columns:repeat(8,1fr);gap:12px}
.scen{position:relative}
.scen img{width:100%;aspect-ratio:9/8;object-fit:cover;border-radius:10px;display:block}
.scen b{display:block;font-size:14px;color:var(--ink);margin:10px 0 4px}
.scen p{font-size:11px;color:var(--muted);line-height:1.6}
.scen:not(:last-child)::after{content:"\203A";position:absolute;right:-9px;top:32%;color:var(--blue);font-size:18px;font-weight:800}

/* ---------- platform page: earth CTA ---------- */
.pl-cta{position:relative;background:#04101f;color:#fff;overflow:hidden}
.pl-cta__bg{position:absolute;inset:-14px;z-index:0;background:#04101f url("../img/platform/cta-earth.jpg") center/100% 100% no-repeat;filter:blur(2.5px) brightness(.95)}
.pl-cta::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(90deg,rgba(4,16,31,.88) 0%,rgba(4,16,31,.46) 26%,rgba(4,16,31,.22) 52%,rgba(4,16,31,.66) 78%,rgba(4,16,31,.78) 100%)}
.pl-cta .container{position:relative;z-index:2;display:flex;align-items:center;gap:clamp(22px,3.4vw,48px);flex-wrap:wrap;padding:clamp(44px,5.5vw,72px) 0}
.pl-cta__lead{flex:0 1 340px}
.pl-cta h2{font-size:clamp(22px,2.7vw,34px);color:#fff;line-height:1.4}
.pl-cta .en{font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:#8fb4d6;margin-top:12px;line-height:1.9}
.pl-cta__cols{display:flex;gap:clamp(20px,2.6vw,40px);flex-wrap:wrap;flex:1 1 auto;justify-content:flex-end}
.pl-cta__cols .c{position:relative;padding-left:clamp(16px,1.6vw,22px)}
.pl-cta__cols .c:not(:first-child)::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:26px;background:rgba(143,180,214,.35)}
.pl-cta__cols .c b{display:block;font-size:15px;color:#fff;white-space:nowrap}
.pl-cta__cols .c span{display:block;font-size:9.5px;letter-spacing:.1em;text-transform:uppercase;color:#7fa6c4;margin-top:5px;white-space:nowrap}
.pl-cta .btn--primary{background:#fff;color:var(--navy);border-color:#fff;flex:none;min-width:268px;padding:21px 34px;font-size:16px;justify-content:center}

/* footer */
.footer{background:#08192b;color:#8ba4bb;padding:64px 0 26px;font-size:14px}
.footer a:hover{color:#fff}
.footer .fgrid{display:grid;grid-template-columns:1.6fr repeat(4,1fr);gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer .fbrand img{width:44px;height:44px;margin-bottom:14px;filter:brightness(0) invert(1);opacity:.9}
.footer .fbrand b{color:#fff;font-size:18px;display:block}
.footer .fbrand p{margin-top:12px;max-width:320px;line-height:1.8}
.footer h4{color:#cfe0ee;font-size:14px;margin-bottom:14px}
.footer li{margin:9px 0}
.footer .fbottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:22px;font-size:12.5px;color:#5f7891}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.show{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* misc helpers */
.text-grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.center{text-align:center}
.mw-720{max-width:720px}.mw-720.auto{margin-inline:auto}
.muted{color:var(--muted)}
.small{font-size:13px}
.note{font-size:12.5px;color:var(--silver)}
.divider{height:1px;background:var(--line);margin:clamp(40px,6vw,72px) 0}
.ico-line{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink)}

/* ---------- responsive ---------- */
@media(max-width:1440px){
  /* 装饰性中/EN 切换在常规屏宽隐藏，为导航与“进入系统”入口留出空间 */
  .nav-cta .lang{display:none}
}
@media(max-width:1260px){
  .nav-links{display:none;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;align-items:stretch;background:#fff;border-bottom:1px solid var(--line);padding:12px;gap:2px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .nav-links>a,.nav-links>.drop>.drop-btn{justify-content:flex-start;width:100%}
  .drop-menu{position:static;transform:none;opacity:1;visibility:visible;box-shadow:none;border:0;border-radius:0;display:none;min-width:0;padding-left:14px}
  .drop.open .drop-menu{display:block}
  .nav-burger{display:flex}
}
@media(max-width:1080px){
  .cap-strip{grid-template-columns:repeat(3,1fr)}
  .river{grid-template-columns:1fr;gap:0}.river::before{display:none}.river .node{padding:18px 0 18px 40px;border-left:2px solid var(--line)}.river .node .dot{left:-14px;top:18px}
  .layers{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:860px){
  .g-3,.g-4,.g-6{grid-template-columns:repeat(2,1fr)}
  .feature{grid-template-columns:1fr;gap:26px}.feature--rev .feature__media{order:0}
  .stat-band{grid-template-columns:repeat(2,1fr);gap:26px 16px}
  .footer .fgrid{grid-template-columns:1fr 1fr}
  .topbar .tb-right span:first-child{display:none}
}
@media(max-width:560px){
  body{font-size:15px}
  .g-2,.g-3,.g-4,.g-6,.layers,.cap-strip{grid-template-columns:1fr}
  .cap-strip{grid-template-columns:repeat(2,1fr)}
  .stat-band{grid-template-columns:1fr 1fr}
  .footer .fgrid{grid-template-columns:1fr}
  .topbar{font-size:11px}
  .nav-cta .btn{display:none}
  .tbl{font-size:12.5px}.tbl th,.tbl td{padding:10px}
  .stages,.found-grid,.impact{grid-template-columns:1fr}
  .stage__body{flex-direction:column}
  .stage__thumb{width:100%;height:auto;aspect-ratio:16/9}
  .pods{gap:14px}
  .pod{padding:16px}
  .pod__body{flex-direction:column;align-items:flex-start;gap:4px}
  .pod__img{width:104px;height:132px}
  .pod ul{width:100%}
  .pod__tag{margin-left:0}
  .tools{grid-template-columns:repeat(2,1fr)}
  .iscen{grid-template-columns:repeat(2,1fr)}
  .sw__chips{grid-template-columns:1fr}
  .prod-hero__stats .st::after{display:none}
  .prod-hero__stats .st{padding-right:0}
  .pcats{grid-template-columns:1fr}
  .core-orbit{padding:24px 16px}
}
@media(max-width:1180px){
  .prod-hero{min-height:0;display:flex;flex-direction:column;align-items:stretch;padding-bottom:0}
  .prod-hero::before{display:none}
  .prod-hero .container{order:1;padding:34px 0 26px}
  .prod-hero__shot{order:2;position:static;display:block;width:min(92vw,760px);height:auto;object-fit:contain;border-radius:14px;margin:0 auto 30px;-webkit-mask-image:none;mask-image:none}
  .prod-hero__cn{max-width:none}
}
@media(max-width:980px){
  .sci-hero::before{background:linear-gradient(180deg,rgba(238,245,251,.95),rgba(238,245,251,.55))}
  .sci-hero .container{display:flex;flex-direction:column;min-height:0}
  .sci-hero__text{order:1}
  .sci-hero__rail{position:static;text-align:left;order:2;margin-top:22px}
  .sci-hero__books{display:none}
  .stages{grid-template-columns:repeat(2,1fr)}
  .stage:not(:last-child)::after{display:none}
  .found-grid{grid-template-columns:repeat(2,1fr)}
  .impact{grid-template-columns:repeat(2,1fr)}
  .impact-step:not(:last-child)::after{display:none}
  .prod-hero__stats{flex-wrap:wrap;gap:18px 26px}
  .prod-hero__stats .st{padding-right:22px}
  .psec-head .note{text-align:left}
  .pods{grid-template-columns:1fr}
  .sw{grid-template-columns:1fr}
  .tools{grid-template-columns:repeat(3,1fr)}
  .iscen{grid-template-columns:repeat(4,1fr)}
  .prod-cta .container{flex-direction:column;align-items:flex-start}
  .pcats{grid-template-columns:repeat(2,1fr)}
  .core-orbit{grid-template-columns:1fr}
  .orbit-stage{height:380px;order:-1}
  .pstatus .closing{margin-left:0;width:100%}
  .pl-hero{background:#eef5fb;padding-bottom:0;display:flex;flex-direction:column}
  .pl-hero::before{display:none}
  .pl-hero .container{grid-template-columns:1fr;padding-top:40px;order:1}
  .pl-hero__shot{position:static;order:2;display:block;width:min(92vw,620px);height:auto;max-width:none;margin:24px auto 0;border-radius:14px}
  .pcaps{grid-template-columns:repeat(2,1fr);margin-top:24px}
  .pcap{border-bottom:1px solid var(--line)}
  .pcap:nth-child(2n){border-right:0}
  .arch-row{grid-template-columns:1fr;gap:14px}
  .arch-arrow{display:none}
  .scens{grid-template-columns:repeat(4,1fr)}
  .scen:not(:last-child)::after{display:none}
}
@media(max-width:560px){
  .stages{grid-template-columns:1fr}
  .found-grid{grid-template-columns:1fr}
  .impact{grid-template-columns:1fr}
  .pcats{grid-template-columns:1fr}
  .o-node{font-size:12px}
  .o-node .oi{width:32px;height:32px}
  .pcaps{grid-template-columns:1fr}
  .pcap{border-right:0}
  .scens{grid-template-columns:repeat(2,1fr)}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important;animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}