/* ============================================================
   Zbremesh — 企业购买页
   Design system: clean enterprise SaaS, light, cool-neutral,
   teal-green accent. Restrained & trustworthy.
   ============================================================ */

:root {
  /* type */
  --font-zh: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Space Grotesk", var(--font-zh);
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  /* neutrals — cool, green-tinted */
  --bg:        #f3f6f4;
  --bg-2:      #eef2f0;
  --paper:     #ffffff;
  --ink:       #0c1411;
  --ink-soft:  #4d5b55;
  --ink-mute:  #87948d;
  --line:      #e4eae7;
  --line-2:    #d4ddd8;

  /* accent — teal/green (tweakable) */
  --accent:        #0c9e76;
  --accent-strong: #0a7e5e;
  --accent-bright: #1fd6a0;
  --accent-wash:   #e6f6f0;

  /* dark panel */
  --dark:    #0b1410;
  --dark-2:  #11201a;
  --dark-ink:#e8efea;
  --dark-soft:#8aa39a;
  --dark-line:#22322b;

  /* shape */
  --r-sm: 8px;
  --r:    14px;
  --r-lg: 22px;
  --r-xl: 30px;

  --shadow-sm: 0 1px 2px rgba(12,20,17,.05), 0 1px 1px rgba(12,20,17,.04);
  --shadow:    0 4px 20px -6px rgba(12,20,17,.10), 0 2px 6px -2px rgba(12,20,17,.06);
  --shadow-lg: 0 24px 60px -20px rgba(12,20,17,.22), 0 8px 24px -10px rgba(12,20,17,.12);

  /* layout */
  --maxw: 1200px;
  --gut: clamp(20px, 5vw, 64px);
  --sec: clamp(72px, 9vw, 132px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  font-family: var(--font-zh);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "tnum" 0;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ---------- layout helpers ---------- */
.wrap { max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.section { padding-block: var(--sec); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent-strong);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.eyebrow::before {
  content: "";
  width: 14px; height: 14px;
  border-radius: 3px;
  background:
    linear-gradient(135deg, var(--accent) 0 50%, transparent 50% 100%),
    var(--accent-bright);
  background-size: 100% 100%;
  box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.5);
}

h1, h2, h3 { line-height: 1.12; letter-spacing: -.01em; font-weight: 700; }
.h-sec { font-size: clamp(1.9rem, 3.4vw, 2.85rem); letter-spacing: -.02em; }
.lead { font-size: clamp(1.02rem, 1.4vw, 1.18rem); color: var(--ink-soft); line-height: 1.7; }

.tnum { font-variant-numeric: tabular-nums; font-family: var(--font-display); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: .98rem; font-weight: 600;
  padding: 13px 22px;
  border-radius: 999px;
  transition: transform .18s cubic-bezier(.2,.8,.2,1), background .18s, box-shadow .18s, color .18s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: #1b2520; box-shadow: var(--shadow); transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 6px 18px -6px color-mix(in oklab, var(--accent), transparent 35%); }
.btn-accent:hover { background: var(--accent-strong); transform: translateY(-1px); }
.btn-ghost { background: var(--paper); color: var(--ink); box-shadow: inset 0 0 0 1px var(--line-2); }
.btn-ghost:hover { box-shadow: inset 0 0 0 1px var(--ink); transform: translateY(-1px); }
.btn .arr { transition: transform .2s; }
.btn:hover .arr { transform: translateX(3px); }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in oklab, var(--bg), transparent 18%);
  backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s, background .25s, box-shadow .25s;
}
.nav.scrolled {
  border-bottom-color: var(--line);
  background: color-mix(in oklab, var(--bg), transparent 6%);
  box-shadow: 0 1px 0 rgba(12,20,17,.02);
}
.nav-in { display: flex; align-items: center; gap: 28px; height: 72px; }
.brand { display: flex; align-items: center; gap: 11px; font-family: var(--font-display); font-weight: 700; font-size: 1.18rem; letter-spacing: -.02em; }
.brand .logo {
  width: 30px; height: 30px; border-radius: 8px;
  display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 2.5px;
  padding: 4px; background: var(--ink);
}
.brand .logo i { background: #fff; border-radius: 1.5px; }
.brand .logo i:nth-child(1) { background: var(--accent-bright); }
.brand .logo i:nth-child(4) { background: var(--accent-bright); }
.brand b { font-weight: 700; }
.brand b span { color: var(--accent); }
.nav-links { display: flex; gap: 4px; margin-left: 8px; }
.nav-links a { font-size: .95rem; color: var(--ink-soft); padding: 8px 13px; border-radius: 8px; transition: color .15s, background .15s; font-weight: 500; }
.nav-links a:hover { color: var(--ink); background: var(--bg-2); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; }

/* ---------- hero ---------- */
.hero { position: relative; padding-top: clamp(48px, 7vw, 96px); padding-bottom: var(--sec); overflow: hidden; }
.hero-grid {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(120% 80% at 70% 0%, #000 0%, transparent 62%);
          mask-image: radial-gradient(120% 80% at 70% 0%, #000 0%, transparent 62%);
  opacity: .6;
}
.hero-in { position: relative; z-index: 1; display: grid; grid-template-columns: 1.02fr .98fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero h1 { font-size: clamp(2.3rem, 5.2vw, 4rem); letter-spacing: -.035em; margin: 22px 0 0; }
.hero h1 .mk { color: var(--accent); position: relative; white-space: nowrap; }
.hero .lead { margin-top: 22px; max-width: 36ch; }
.hero-cta { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.hero-note { margin-top: 18px; font-size: .85rem; color: var(--ink-mute); display: flex; align-items: center; gap: 8px; }
.hero-note b { color: var(--ink-soft); font-weight: 600; }

/* stat chips */
.stats { display: flex; gap: 10px; margin-top: 38px; flex-wrap: wrap; }
.stat {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--r); padding: 14px 18px; box-shadow: var(--shadow-sm);
  min-width: 130px;
}
.stat .v { font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; letter-spacing: -.02em; line-height: 1; }
.stat .v small { font-size: .8rem; color: var(--ink-mute); font-weight: 600; margin-left: 2px; }
.stat .k { font-size: .78rem; color: var(--ink-soft); margin-top: 6px; }
.stat .v .u { color: var(--accent); }

/* hero visual — before/after card */
.hero-visual { position: relative; }
.compare {
  position: relative; border-radius: var(--r-lg); overflow: hidden;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  aspect-ratio: 4/3.4; background: var(--dark); user-select: none;
}
.compare .pane { position: absolute; inset: 0; }
.mesh { position: absolute; inset: 0; }
.mesh-label {
  position: absolute; left: 14px; top: 14px; z-index: 4;
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .04em;
  padding: 6px 11px; border-radius: 999px; backdrop-filter: blur(6px);
  display: flex; align-items: center; gap: 7px;
}
.mesh-label .dot { width: 7px; height: 7px; border-radius: 50%; }
.lab-before { background: rgba(20,8,8,.55); color: #ffd9cc; }
.lab-before .dot { background: #ff7a59; }
.lab-after { right: 14px; left: auto; background: rgba(8,24,18,.5); color: #b9f5e0; }
.lab-after .dot { background: var(--accent-bright); }
.compare .clip { position: absolute; inset: 0; overflow: hidden; }
.compare-handle {
  position: absolute; top: 0; bottom: 0; width: 2px; background: #fff; z-index: 6;
  box-shadow: 0 0 0 1px rgba(0,0,0,.15);
}
.compare-handle::before {
  content: ""; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 42px; height: 42px; border-radius: 50%; background: #fff; box-shadow: var(--shadow);
}
.compare-handle::after {
  content: "⟺"; position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  font-size: 18px; color: var(--ink); z-index: 1;
}
.compare-stat {
  position: absolute; bottom: 14px; z-index: 5; font-family: var(--font-mono);
  font-size: .72rem; padding: 6px 11px; border-radius: 8px; backdrop-filter: blur(6px);
}
.cs-before { left: 14px; background: rgba(20,8,8,.5); color: #ffd9cc; }
.cs-after { right: 14px; background: rgba(8,24,18,.5); color: #b9f5e0; }

/* mesh textures — abstract topology representation */
.mesh-before {
  background:
    repeating-linear-gradient(60deg,  rgba(255,140,110,.16) 0 1px, transparent 1px 9px),
    repeating-linear-gradient(-60deg, rgba(255,140,110,.16) 0 1px, transparent 1px 9px),
    repeating-linear-gradient(0deg,   rgba(255,140,110,.10) 0 1px, transparent 1px 11px),
    repeating-linear-gradient(34deg,  rgba(255,170,140,.08) 0 1px, transparent 1px 6px),
    radial-gradient(120% 100% at 40% 30%, #2a1410, #160a08);
}
.mesh-after {
  background:
    repeating-linear-gradient(0deg,  rgba(60,230,180,.20) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(90deg, rgba(60,230,180,.20) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(0deg,  rgba(60,230,180,.07) 0 1px, transparent 1px 11px),
    repeating-linear-gradient(90deg, rgba(60,230,180,.07) 0 1px, transparent 1px 11px),
    radial-gradient(120% 100% at 60% 35%, #0c2a20, #08150f);
}
.mesh-after::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(50% 45% at 58% 42%, rgba(31,214,160,.18), transparent 70%);
}

/* logo strip */
.trust { padding-block: 40px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trust-in { display: flex; align-items: center; gap: clamp(20px,4vw,52px); flex-wrap: wrap; justify-content: center; }
.trust .label { font-family: var(--font-mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-mute); }
.trust .marks { display: flex; align-items: center; gap: clamp(24px,4vw,52px); flex-wrap: wrap; justify-content: center; }
.tmark { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--ink-mute); letter-spacing: -.01em; opacity: .85; display: flex; align-items: center; gap: 8px; }
.tmark .sq { width: 14px; height: 14px; border-radius: 4px; background: currentColor; opacity: .6; }

/* ---------- section header ---------- */
.sec-head { max-width: 62ch; }
.sec-head .h-sec { margin-top: 16px; }
.sec-head .lead { margin-top: 16px; }
.center { text-align: center; margin-inline: auto; }
.center .eyebrow { justify-content: center; }

/* ---------- benchmark ---------- */
.bench { background: var(--dark); color: var(--dark-ink); border-radius: var(--r-xl); padding: clamp(32px,5vw,64px); position: relative; overflow: hidden; }
.bench::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--dark-line) 1px, transparent 1px), linear-gradient(90deg, var(--dark-line) 1px, transparent 1px);
  background-size: 48px 48px; opacity: .5;
  -webkit-mask-image: radial-gradient(110% 90% at 100% 0, #000, transparent 70%);
          mask-image: radial-gradient(110% 90% at 100% 0, #000, transparent 70%);
}
.bench-top { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.bench .eyebrow { color: var(--accent-bright); }
.bench .eyebrow::before { box-shadow: none; }
.bench h2 { color: #fff; margin-top: 14px; font-size: clamp(1.7rem,3vw,2.5rem); }
.bench .sub { color: var(--dark-soft); margin-top: 12px; max-width: 44ch; }
.bench-toggle { display: inline-flex; background: rgba(255,255,255,.06); border: 1px solid var(--dark-line); border-radius: 999px; padding: 4px; gap: 4px; }
.bench-toggle button { font-family: var(--font-mono); font-size: .78rem; color: var(--dark-soft); padding: 8px 16px; border-radius: 999px; transition: .18s; font-weight: 600; }
.bench-toggle button.on { background: #fff; color: var(--dark); }

.bench-rows { position: relative; z-index: 1; margin-top: 38px; display: grid; gap: 20px; }
.brow { display: grid; grid-template-columns: 168px 1fr; gap: 20px; align-items: center; }
.brow .name { }
.brow .name b { display: block; font-weight: 600; }
.brow .name span { font-family: var(--font-mono); font-size: .74rem; color: var(--dark-soft); }
.bars { display: grid; gap: 9px; }
.bar { display: flex; align-items: center; gap: 14px; }
.bar .track { flex: 1; height: 30px; background: rgba(255,255,255,.05); border-radius: 8px; overflow: hidden; position: relative; }
.bar .fill { height: 100%; border-radius: 8px; width: 0; transition: width 1.1s cubic-bezier(.2,.85,.25,1); position: relative; }
.bar.gpu .fill { background: linear-gradient(90deg, var(--accent), var(--accent-bright)); }
.bar.cpu .fill { background: linear-gradient(90deg, #3a4d45, #5c7268); }
.bar .tag { width: 52px; font-family: var(--font-mono); font-size: .74rem; color: var(--dark-soft); }
.bar .time { font-family: var(--font-display); font-weight: 700; font-size: .98rem; min-width: 92px; text-align: right; color: #fff; font-variant-numeric: tabular-nums; }
.bar.cpu .time { color: var(--dark-soft); }
.bench-foot { position: relative; z-index: 1; margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--dark-line); display: flex; gap: 34px; flex-wrap: wrap; }
.bfoot { }
.bfoot .v { font-family: var(--font-display); font-weight: 700; font-size: 1.7rem; color: #fff; }
.bfoot .v em { font-style: normal; color: var(--accent-bright); }
.bfoot .k { font-size: .82rem; color: var(--dark-soft); margin-top: 4px; }

/* ---------- before/after big ---------- */
.ba-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 44px; }
.ba-card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 8px; box-shadow: var(--shadow-sm); }
.ba-card .slot-wrap { position: relative; border-radius: 16px; overflow: hidden; aspect-ratio: 16/11; background: var(--dark); }
.ba-card image-slot { width: 100%; height: 100%; }
.ba-card .cap { padding: 14px 14px 10px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.ba-card .cap .t { font-weight: 600; }
.ba-card .cap .t span { display: block; font-family: var(--font-mono); font-size: .74rem; color: var(--ink-mute); font-weight: 400; margin-top: 2px; }
.ba-tag { font-family: var(--font-mono); font-size: .72rem; padding: 5px 10px; border-radius: 999px; }
.ba-tag.b { background: #fdece6; color: #c2410c; }
.ba-tag.a { background: var(--accent-wash); color: var(--accent-strong); }

/* ---------- features ---------- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 48px; }
.feat {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 26px; box-shadow: var(--shadow-sm); transition: transform .22s, box-shadow .22s, border-color .22s;
  position: relative; overflow: hidden;
}
.feat:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--line-2); }
.feat .num { font-family: var(--font-mono); font-size: .76rem; color: var(--accent-strong); font-weight: 600; }
.feat .ico {
  width: 46px; height: 46px; border-radius: 12px; margin: 14px 0 18px;
  display: grid; place-items: center; background: var(--accent-wash); color: var(--accent-strong);
}
.feat h3 { font-size: 1.18rem; letter-spacing: -.01em; }
.feat p { color: var(--ink-soft); font-size: .96rem; margin-top: 10px; line-height: 1.65; }
.feat .params { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 6px; }
.param { font-family: var(--font-mono); font-size: .73rem; padding: 4px 9px; border-radius: 7px; background: var(--bg-2); color: var(--ink-soft); border: 1px solid var(--line); }
.feat.span2 { grid-column: span 2; }

/* ---------- pricing ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 48px; align-items: stretch; }
.plan { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 30px; display: flex; flex-direction: column; box-shadow: var(--shadow-sm); }
.plan.feature { background: var(--dark); color: var(--dark-ink); border-color: var(--dark); position: relative; box-shadow: var(--shadow-lg); }
.plan .pname { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; }
.plan .pfor { font-size: .9rem; color: var(--ink-soft); margin-top: 6px; min-height: 2.8em; }
.plan.feature .pfor { color: var(--dark-soft); }
.plan .pprice { margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--line); font-family: var(--font-display); font-weight: 700; font-size: 1.9rem; letter-spacing: -.02em; }
.plan.feature .pprice { border-top-color: var(--dark-line); color: #fff; }
.plan .pprice small { font-size: .9rem; color: var(--ink-mute); font-weight: 500; font-family: var(--font-zh); }
.plan.feature .pprice small { color: var(--dark-soft); }
.plan ul { list-style: none; margin: 22px 0; display: grid; gap: 12px; flex: 1; }
.plan li { font-size: .94rem; color: var(--ink-soft); display: flex; gap: 10px; align-items: flex-start; line-height: 1.5; }
.plan.feature li { color: var(--dark-ink); }
.plan li .ck { color: var(--accent); flex: none; margin-top: 2px; }
.plan.feature li .ck { color: var(--accent-bright); }
.plan .pbadge { position: absolute; top: 22px; right: 22px; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; background: var(--accent); color: #fff; padding: 5px 10px; border-radius: 999px; }
.plan .btn { width: 100%; justify-content: center; }

/* ---------- cases ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 48px; }
.case { background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 28px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
.case .quote { font-size: 1.05rem; line-height: 1.6; letter-spacing: -.01em; flex: 1; }
.case .quote b { color: var(--accent-strong); font-weight: 600; }
.case .who { display: flex; align-items: center; gap: 12px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }
.case .who .av { width: 40px; height: 40px; border-radius: 10px; background: var(--bg-2); display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; color: var(--ink-soft); }
.case .who .meta b { display: block; font-size: .92rem; }
.case .who .meta span { font-size: .82rem; color: var(--ink-mute); }
.case-metrics { display: flex; gap: 28px; margin-top: 44px; padding: 28px clamp(20px,4vw,44px); background: var(--paper); border: 1px solid var(--line); border-radius: var(--r-lg); flex-wrap: wrap; justify-content: space-around; box-shadow: var(--shadow-sm); }
.cmetric { text-align: center; }
.cmetric .v { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.8rem,3.4vw,2.6rem); letter-spacing: -.02em; }
.cmetric .v em { font-style: normal; color: var(--accent); }
.cmetric .k { font-size: .86rem; color: var(--ink-soft); margin-top: 4px; }

/* ---------- CTA / form ---------- */
.cta-sec { }
.cta-card { background: var(--dark); color: var(--dark-ink); border-radius: var(--r-xl); overflow: hidden; display: grid; grid-template-columns: 1fr 1fr; position: relative; }
.cta-left { padding: clamp(34px,4.5vw,60px); position: relative; z-index:1; }
.cta-left::after { content:""; position:absolute; inset:0; pointer-events:none; background-image: linear-gradient(var(--dark-line) 1px,transparent 1px),linear-gradient(90deg,var(--dark-line) 1px,transparent 1px); background-size:48px 48px; opacity:.45; -webkit-mask-image: radial-gradient(90% 90% at 0 100%,#000,transparent 70%); mask-image: radial-gradient(90% 90% at 0 100%,#000,transparent 70%); }
.cta-left > * { position: relative; z-index: 1; }
.cta-left .eyebrow { color: var(--accent-bright); }
.cta-left .eyebrow::before { box-shadow:none; }
.cta-left h2 { color: #fff; margin-top: 14px; font-size: clamp(1.8rem,3vw,2.5rem); }
.cta-left .lead { color: var(--dark-soft); margin-top: 16px; }
.cta-bullets { margin-top: 26px; display: grid; gap: 13px; }
.cta-bullets li { list-style: none; display: flex; gap: 11px; align-items: flex-start; color: var(--dark-ink); font-size: .96rem; }
.cta-bullets .ck { color: var(--accent-bright); flex: none; margin-top: 2px; }

.form-card { background: var(--paper); padding: clamp(28px,3.5vw,44px); }
.form-card h3 { font-size: 1.35rem; }
.form-card .fsub { color: var(--ink-soft); font-size: .92rem; margin-top: 8px; }
.fgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: .82rem; font-weight: 600; color: var(--ink-soft); }
.field label .req { color: var(--accent); }
.field input, .field select, .field textarea {
  font-family: inherit; font-size: .95rem; color: var(--ink);
  padding: 12px 14px; border-radius: 10px; border: 1px solid var(--line-2);
  background: var(--bg); transition: border-color .15s, box-shadow .15s, background .15s;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 84px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); background: var(--paper);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent), transparent 82%);
}
.field.err input, .field.err select { border-color: #e0483d; background: #fef5f4; }
.field .msg { font-size: .76rem; color: #d23b30; display: none; }
.field.err .msg { display: block; }
.seg { display: flex; gap: 8px; flex-wrap: wrap; }
.seg input { display: none; }
.seg label {
  font-size: .86rem; font-weight: 500; padding: 9px 14px; border-radius: 9px;
  border: 1px solid var(--line-2); background: var(--bg); cursor: pointer; transition: .15s; color: var(--ink-soft);
}
.seg input:checked + label { border-color: var(--accent); background: var(--accent-wash); color: var(--accent-strong); font-weight: 600; }
.form-submit { margin-top: 24px; }
.form-submit .btn { width: 100%; justify-content: center; font-size: 1.02rem; padding: 15px; }
.form-fine { margin-top: 14px; font-size: .78rem; color: var(--ink-mute); text-align: center; }

.form-success { text-align: center; padding: clamp(40px,6vw,80px) 24px; display: none; }
.form-success.show { display: block; animation: pop .5s cubic-bezier(.2,.9,.3,1.2); }
.form-success .ok { width: 64px; height: 64px; border-radius: 50%; background: var(--accent-wash); color: var(--accent); display: grid; place-items: center; margin: 0 auto 22px; }
.form-success h3 { font-size: 1.5rem; }
.form-success p { color: var(--ink-soft); margin-top: 10px; }
@keyframes pop { from { opacity: 0; transform: scale(.95);} to {opacity:1; transform: scale(1);} }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); padding-block: 56px 40px; }
.foot-in { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 32px; }
.foot-brand .brand { margin-bottom: 14px; }
.foot-brand p { font-size: .9rem; color: var(--ink-soft); max-width: 34ch; line-height: 1.6; }
.foot-col h4 { font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-mute); margin-bottom: 14px; font-weight: 600; }
.foot-col a { display: block; font-size: .9rem; color: var(--ink-soft); padding: 5px 0; transition: color .15s; }
.foot-col a:hover { color: var(--ink); }
.foot-bottom { margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: .84rem; color: var(--ink-mute); }
.foot-bottom .fb-links { display: flex; gap: 20px; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-in { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 520px; }
  .feat-grid, .price-grid, .case-grid { grid-template-columns: repeat(2,1fr); }
  .feat.span2 { grid-column: span 2; }
  .cta-card { grid-template-columns: 1fr; }
  .foot-in { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 9px; margin-left: auto; }
  .nav-toggle:hover { background: var(--bg-2); }
  .feat-grid, .price-grid, .case-grid, .ba-grid, .fgrid { grid-template-columns: 1fr; }
  .feat.span2 { grid-column: span 1; }
  .brow { grid-template-columns: 1fr; gap: 10px; }
  .foot-in { grid-template-columns: 1fr; gap: 28px; }
  .bench-foot { gap: 22px; }
  .bfoot { flex: 1 1 40%; }
}

/* mobile menu */
.mmenu { display: none; position: fixed; inset: 72px 0 0; z-index: 55; background: var(--bg); padding: var(--gut); flex-direction: column; gap: 6px; }
.mmenu.open { display: flex; }
.mmenu a { font-size: 1.15rem; font-weight: 600; padding: 14px 4px; border-bottom: 1px solid var(--line); }
.mmenu .btn { margin-top: 18px; justify-content: center; }