/* ============================================================
   宏泰 · AI系统事业部 —— 站点样式
   主题感知（浅色 / 深色）· 响应式 · 自包含（无外部依赖）
   ============================================================ */

:root {
  /* 中性 —— 浅色 */
  --bg:        #f6f7fb;
  --bg-soft:   #eef1f8;
  --surface:   #ffffff;
  --surface-2: #f3f5fb;
  --text:      #141926;
  --text-soft: #39414f;
  --muted:     #5c667a;
  --faint:     #8a93a6;
  --border:    #e4e8f1;
  --border-2:  #d3d9e6;

  /* 品牌 —— 紫 → 青 */
  --violet:    #7c3aed;
  --violet-2:  #8b5cf6;
  --cyan:      #0891b2;
  --cyan-2:    #06b6d4;
  --accent:    var(--violet);
  --grad:      linear-gradient(120deg, #7c3aed 0%, #06b6d4 100%);
  --grad-soft: linear-gradient(120deg, rgba(124,58,237,.12), rgba(6,182,212,.12));
  --glow-1:    rgba(124,58,237,.35);
  --glow-2:    rgba(6,182,212,.30);

  --shadow-sm: 0 1px 2px rgba(15,23,42,.05), 0 2px 8px rgba(15,23,42,.05);
  --shadow-md: 0 8px 24px rgba(15,23,42,.09), 0 2px 6px rgba(15,23,42,.05);
  --shadow-lg: 0 26px 60px rgba(15,23,42,.16);
  --ring:      0 0 0 3px rgba(124,58,237,.25);

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;

  --maxw: 1120px;
  --radius: 16px;
  --radius-sm: 11px;
  --nav-h: 66px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:        #080b14;
    --bg-soft:   #0c1020;
    --surface:   #10142260;
    --surface-2: #141a2b;
    --text:      #e8ebf5;
    --text-soft: #c4cbdc;
    --muted:     #939db6;
    --faint:     #66708c;
    --border:    rgba(255,255,255,.09);
    --border-2:  rgba(255,255,255,.16);
    --violet:    #a78bfa;
    --violet-2:  #c4b5fd;
    --cyan:      #22d3ee;
    --cyan-2:    #67e8f9;
    --accent:    #a78bfa;
    --grad:      linear-gradient(120deg, #8b5cf6 0%, #22d3ee 100%);
    --grad-soft: linear-gradient(120deg, rgba(139,92,246,.18), rgba(34,211,238,.14));
    --glow-1:    rgba(124,58,237,.45);
    --glow-2:    rgba(6,182,212,.40);
    --shadow-sm: 0 1px 2px rgba(0,0,0,.5);
    --shadow-md: 0 10px 30px rgba(0,0,0,.55);
    --shadow-lg: 0 30px 70px rgba(0,0,0,.65);
    --ring:      0 0 0 3px rgba(167,139,250,.35);
  }
}
/* 手动切换（优先于系统） */
:root[data-theme="dark"] {
  --bg:#080b14; --bg-soft:#0c1020; --surface:#10142260; --surface-2:#141a2b;
  --text:#e8ebf5; --text-soft:#c4cbdc; --muted:#939db6; --faint:#66708c;
  --border:rgba(255,255,255,.09); --border-2:rgba(255,255,255,.16);
  --violet:#a78bfa; --violet-2:#c4b5fd; --cyan:#22d3ee; --cyan-2:#67e8f9; --accent:#a78bfa;
  --grad:linear-gradient(120deg,#8b5cf6 0%,#22d3ee 100%);
  --grad-soft:linear-gradient(120deg,rgba(139,92,246,.18),rgba(34,211,238,.14));
  --glow-1:rgba(124,58,237,.45); --glow-2:rgba(6,182,212,.40);
  --shadow-sm:0 1px 2px rgba(0,0,0,.5); --shadow-md:0 10px 30px rgba(0,0,0,.55); --shadow-lg:0 30px 70px rgba(0,0,0,.65);
  --ring:0 0 0 3px rgba(167,139,250,.35);
}
:root[data-theme="light"] {
  --bg:#f6f7fb; --bg-soft:#eef1f8; --surface:#ffffff; --surface-2:#f3f5fb;
  --text:#141926; --text-soft:#39414f; --muted:#5c667a; --faint:#8a93a6;
  --border:#e4e8f1; --border-2:#d3d9e6;
  --violet:#7c3aed; --violet-2:#8b5cf6; --cyan:#0891b2; --cyan-2:#06b6d4; --accent:#7c3aed;
  --grad:linear-gradient(120deg,#7c3aed 0%,#06b6d4 100%);
  --grad-soft:linear-gradient(120deg,rgba(124,58,237,.12),rgba(6,182,212,.12));
  --glow-1:rgba(124,58,237,.35); --glow-2:rgba(6,182,212,.30);
  --shadow-sm:0 1px 2px rgba(15,23,42,.05),0 2px 8px rgba(15,23,42,.05);
  --shadow-md:0 8px 24px rgba(15,23,42,.09),0 2px 6px rgba(15,23,42,.05);
  --shadow-lg:0 26px 60px rgba(15,23,42,.16); --ring:0 0 0 3px rgba(124,58,237,.25);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--nav-h) + 12px); }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.72;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1,h2,h3,h4,h5 { line-height: 1.22; font-weight: 800; letter-spacing: -.01em; margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img,svg { max-width: 100%; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.grad-text {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  color: transparent; -webkit-text-fill-color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  --pad: 11px 20px;
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: var(--pad); border-radius: 999px; font-weight: 700; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform .16s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap; line-height: 1;
}
.btn--sm { --pad: 8px 16px; font-size: 14px; }
.btn--lg { --pad: 14px 26px; font-size: 16px; }
.btn--block { display: flex; width: 100%; margin-top: 6px; }
.btn--primary { background: var(--grad); color: #fff; box-shadow: 0 8px 22px -8px var(--glow-1); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -10px var(--glow-1); }
.btn--ghost { background: color-mix(in srgb, var(--surface) 70%, transparent); color: var(--text); border-color: var(--border-2); }
.btn--ghost:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }

/* ---------- 导航 ---------- */
.nav {
  position: sticky; top: 0; z-index: 50; height: var(--nav-h);
  backdrop-filter: saturate(150%) blur(14px); -webkit-backdrop-filter: saturate(150%) blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav__inner { height: var(--nav-h); display: flex; align-items: center; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand__mark { display: inline-flex; filter: drop-shadow(0 4px 10px var(--glow-1)); }
.brand__text { display: flex; align-items: baseline; gap: 8px; line-height: 1; }
.brand__text b { font-size: 19px; font-weight: 900; letter-spacing: .02em; }
.brand__sub { font-size: 12.5px; color: var(--muted); font-weight: 600; letter-spacing: .04em; }
.nav__links { display: flex; gap: 6px; margin-left: 8px; flex: 1; }
.nav__links a {
  padding: 8px 12px; border-radius: 9px; font-size: 14.5px; font-weight: 600; color: var(--text-soft);
  transition: color .15s ease, background .15s ease;
}
.nav__links a:hover { color: var(--accent); background: var(--grad-soft); }
.nav__actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px;
  border-radius: 10px; border: 1px solid var(--border-2); background: var(--surface-2); color: var(--text-soft);
  cursor: pointer; transition: color .15s, border-color .15s, transform .15s;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-1px); }
.theme-toggle .ic-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .ic-sun,
:root:not([data-theme="light"]) .theme-toggle .ic-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .ic-moon,
:root:not([data-theme="light"]) .theme-toggle .ic-moon { display: inline; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .theme-toggle .ic-sun { display: inline; }
  :root:not([data-theme]) .theme-toggle .ic-moon { display: none; }
}
:root[data-theme="light"] .theme-toggle .ic-sun { display: inline; }
:root[data-theme="light"] .theme-toggle .ic-moon { display: none; }

.nav__burger { display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px; align-items: center; justify-content: center; background: none; border: 1px solid var(--border-2); border-radius: 10px; cursor: pointer; }
.nav__burger span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s, opacity .25s; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero { position: relative; padding: 92px 0 70px; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.glow { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .9; }
.glow--1 { width: 520px; height: 520px; background: radial-gradient(circle, var(--glow-1), transparent 68%); top: -160px; left: -100px; }
.glow--2 { width: 480px; height: 480px; background: radial-gradient(circle, var(--glow-2), transparent 68%); top: -60px; right: -120px; }
.grid-lines {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 25%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 25%, transparent 78%);
  opacity: .5;
}
.hero__inner { position: relative; z-index: 1; text-align: center; max-width: 860px; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); padding: 6px 14px; border: 1px solid var(--border-2); border-radius: 999px;
  background: var(--grad-soft); margin-bottom: 22px;
}
.hero__title { font-size: clamp(2.1rem, 6vw, 3.7rem); font-weight: 900; letter-spacing: -.02em; }
.hero__lede { margin: 22px auto 0; max-width: 660px; font-size: clamp(1rem, 2.4vw, 1.2rem); color: var(--muted); line-height: 1.75; }
.hero__lede strong { color: var(--text-soft); font-weight: 700; }
.hero__cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }

.hero__stats { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; margin-top: 52px; }
.stat {
  min-width: 138px; flex: 1 1 138px; max-width: 190px; padding: 20px 12px; border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--surface) 88%, transparent); border: 1px solid var(--border);
  box-shadow: var(--shadow-sm); backdrop-filter: blur(6px);
}
.stat b { display: block; font-size: clamp(1.6rem, 4vw, 2.1rem); font-weight: 900; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; -webkit-text-fill-color: transparent; }
.stat span { display: block; font-size: 13.5px; color: var(--muted); margin-top: 4px; font-weight: 600; }

/* ---------- 通用区块 ---------- */
.section { padding: 84px 0; position: relative; }
.section--alt { background: var(--bg-soft); border-block: 1px solid var(--border); }
.sec-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.sec-kicker { display: inline-block; font-size: 13px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-bottom: 12px; }
.sec-head h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
.sec-sub { margin-top: 16px; color: var(--muted); font-size: clamp(1rem, 2.2vw, 1.08rem); }
.block-title { font-size: 1.3rem; font-weight: 800; margin: 8px 0 20px; display: flex; align-items: center; gap: 12px; }
.block-title::before { content: ""; width: 4px; height: 22px; border-radius: 3px; background: var(--grad); }
.block-note { color: var(--faint); font-size: 14px; margin: -8px 0 22px; }

.section-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 48px; }

/* ---------- 产品线卡 ---------- */
.prodgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.prodcard {
  position: relative; display: block; padding: 34px 30px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; overflow: hidden;
}
.prodcard::before { content: ""; position: absolute; inset: 0; background: var(--grad-soft); opacity: 0; transition: opacity .25s; }
.prodcard:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--border-2); }
.prodcard:hover::before { opacity: 1; }
.prodcard > * { position: relative; z-index: 1; }
.prodcard__no { position: absolute; top: 20px; right: 24px; font-size: 40px; font-weight: 900; color: var(--border-2); z-index: 0; letter-spacing: -.03em; }
.prodcard__icon { width: 52px; height: 52px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; background: var(--grad); color: #fff; box-shadow: 0 10px 22px -10px var(--glow-1); margin-bottom: 18px; }
.prodcard h3 { font-size: 1.32rem; margin-bottom: 12px; }
.prodcard p { color: var(--muted); font-size: 15.3px; }
.prodcard__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.prodcard__tags i { font-style: normal; font-size: 12.5px; font-weight: 600; color: var(--text-soft); padding: 4px 10px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); }
.prodcard__more { display: inline-flex; align-items: center; gap: 6px; margin-top: 20px; font-weight: 700; color: var(--accent); font-size: 14.5px; }
.prodcard__more svg { transition: transform .2s; }
.prodcard:hover .prodcard__more svg { transform: translateX(4px); }

/* ---------- 特性网格 ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feat { padding: 26px 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s, border-color .2s; }
.feat:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--border-2); }
.feat__ic { width: 44px; height: 44px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; background: var(--grad-soft); color: var(--accent); margin-bottom: 15px; }
.feat h3 { font-size: 1.08rem; margin-bottom: 8px; }
.feat p { color: var(--muted); font-size: 14.6px; }

/* ---------- 步骤 ---------- */
.steps { display: flex; align-items: stretch; gap: 6px; margin-top: 46px; flex-wrap: wrap; justify-content: center; }
.step { flex: 1 1 190px; max-width: 240px; padding: 22px 18px; border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--border); text-align: center; box-shadow: var(--shadow-sm); }
.step__n { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: 50%; background: var(--grad); color: #fff; font-weight: 800; margin-bottom: 12px; }
.step h4 { font-size: 1rem; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 13.6px; }
.step__arrow { display: flex; align-items: center; color: var(--faint); font-size: 22px; font-weight: 700; }

.applies { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; justify-content: center; margin-top: 40px; }
.applies__label { font-size: 13.5px; font-weight: 700; color: var(--faint); margin-right: 4px; }
.chip { font-size: 13.5px; font-weight: 600; color: var(--text-soft); padding: 6px 14px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border-2); }

/* ---------- 行业网格 ---------- */
.indgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 60px; }
.ind { display: block; color: inherit; padding: 22px 20px; border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: transform .18s, box-shadow .18s, border-color .18s; }
.ind:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.ind__ic { width: 42px; height: 42px; border-radius: 11px; display: inline-flex; align-items: center; justify-content: center; background: var(--grad-soft); color: var(--accent); margin-bottom: 13px; }
.ind h4 { font-size: 1.05rem; margin-bottom: 6px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.ind__go { color: var(--accent); font-weight: 700; opacity: 0; transform: translateX(-3px); transition: opacity .18s ease, transform .18s ease; }
.ind:hover .ind__go { opacity: 1; transform: none; }
.ind p { color: var(--muted); font-size: 13.4px; line-height: 1.6; }

/* ---------- 案例卡 ---------- */
.casegrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.case { padding: 26px 26px 22px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s; }
.case:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.case__head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.case__tag { font-size: 12px; font-weight: 700; color: #fff; background: var(--grad); padding: 4px 12px; border-radius: 999px; }
.case__head h4 { font-size: 1.16rem; }
.case__body { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 10px; }
.case__body li { color: var(--muted); font-size: 14.6px; line-height: 1.62; }
.case__body b { display: inline-block; min-width: 40px; margin-right: 8px; color: var(--accent); font-weight: 800; font-size: 12.5px; padding: 2px 8px; border-radius: 6px; background: var(--grad-soft); }
.case__kpi { display: flex; gap: 12px; padding-top: 16px; border-top: 1px dashed var(--border-2); }
.case__kpi span { flex: 1; display: flex; flex-direction: column; }
.case__kpi b { font-size: 1.5rem; font-weight: 900; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; -webkit-text-fill-color: transparent; line-height: 1.1; }
.case__kpi span { font-size: 12.8px; color: var(--muted); font-weight: 600; }

/* ---------- 优势 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.why { padding: 28px 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s, border-color .2s; }
.why:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--border-2); }
.why__ic { width: 46px; height: 46px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; background: var(--grad); color: #fff; box-shadow: 0 8px 20px -10px var(--glow-1); margin-bottom: 16px; }
.why h3 { font-size: 1.1rem; margin-bottom: 9px; }
.why p { color: var(--muted); font-size: 14.6px; }

/* ---------- 流程 ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 52px; counter-reset: p; }
.process__step { position: relative; padding: 26px 22px; border-radius: var(--radius); background: var(--grad-soft); border: 1px solid var(--border); }
.process__step span { font-size: 13px; font-weight: 900; letter-spacing: .1em; color: var(--accent); }
.process__step h4 { font-size: 1.08rem; margin: 8px 0 7px; }
.process__step p { color: var(--muted); font-size: 14px; }

/* ---------- CTA 带 ---------- */
.cta-band { padding: 74px 0; background: var(--bg-soft); border-top: 1px solid var(--border); }
.cta-band__inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.cta-band__text h2 { font-size: clamp(1.6rem, 4vw, 2.3rem); }
.cta-band__text p { margin-top: 14px; color: var(--muted); font-size: 1.05rem; max-width: 460px; }
.contact-card { padding: 28px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border-2); box-shadow: var(--shadow-md); }
.contact-card__row { display: flex; justify-content: space-between; align-items: baseline; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.contact-card__k { font-size: 13.5px; font-weight: 700; color: var(--faint); flex-shrink: 0; }
.contact-card__v { font-size: 15px; font-weight: 600; text-align: right; }
.contact-card__v a { color: var(--accent); }
.contact-card__v em { font-style: normal; font-size: 12px; color: var(--faint); font-weight: 500; }

/* ---------- 页脚 ---------- */
.foot { background: var(--surface-2); border-top: 1px solid var(--border); padding: 54px 0 26px; }
.foot__inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px; }
.foot__slogan { margin-top: 14px; color: var(--muted); font-size: 14px; max-width: 260px; }
.foot__col h5 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); margin-bottom: 14px; font-weight: 800; }
.foot__col a { display: block; color: var(--text-soft); font-size: 14.5px; padding: 5px 0; transition: color .15s; }
.foot__col a:hover { color: var(--accent); }
.foot__bar { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: var(--faint); font-size: 13px; }

/* ---------- 滚动出现动画 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .feat-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .indgrid { grid-template-columns: repeat(3, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .foot__inner { grid-template-columns: 1fr 1fr; gap: 26px; }
  .foot__brand { grid-column: 1 / -1; }
  .cta-band__inner { grid-template-columns: 1fr; gap: 26px; }
}
@media (max-width: 780px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .nav__links.open {
    display: flex; position: absolute; top: var(--nav-h); left: 0; right: 0; flex-direction: column;
    background: var(--bg); border-bottom: 1px solid var(--border); padding: 12px 22px 18px; gap: 2px; box-shadow: var(--shadow-md);
  }
  .nav__links.open a { padding: 12px; font-size: 16px; }
  .nav__actions .btn { display: none; }
  .prodgrid, .casegrid { grid-template-columns: 1fr; }
  .step__arrow { transform: rotate(90deg); }
  .section { padding: 62px 0; }
  .hero { padding: 64px 0 54px; }
}
@media (max-width: 520px) {
  .feat-grid, .why-grid, .indgrid, .process { grid-template-columns: 1fr; }
  .case__kpi b { font-size: 1.3rem; }
  .foot__inner { grid-template-columns: 1fr; }
  .stat { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .prodcard, .feat, .ind, .case, .why { transition: none; }
}