/* ═══════════════════════════════════════════════════════════
   Erudite — 公司 / 产品宣传站
   翡翠绿 (#0f9d76) × 象牙白 (#f4f1ea) · Inter + Noto Sans SC
   ═══════════════════════════════════════════════════════════ */

:root {
  --emerald-100: #d6f3e6;
  --emerald-200: #6cc9a2;
  --emerald-300: #0f9d76;
  --emerald-400: #0c8a67;
  --emerald-500: #0a7a5b;
  --emerald-600: #086348;
  --emerald-ink: #08362a;

  --ivory-void: #e9e4d8;
  --ivory-base: #f4f1ea;
  --surface: #fdfcf8;
  --elevated: #f8f6f0;
  --overlay: #f1ede4;

  --text-1: #1d2b25;
  --text-2: #4f5d56;
  --text-3: #828d87;

  --border: rgba(20, 40, 32, 0.1);
  --border-soft: rgba(20, 40, 32, 0.06);

  --shadow-sm: 0 1px 2px rgba(40, 60, 50, 0.06);
  --shadow-md: 0 8px 24px rgba(40, 60, 50, 0.1);
  --shadow-lg: 0 24px 60px rgba(20, 50, 38, 0.16);
  --glow: 0 0 40px rgba(15, 157, 118, 0.18);

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 26px;

  --font: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --maxw: 1180px;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--ivory-base);
  color: var(--text-1);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ─── Buttons ─── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font); font-weight: 600; font-size: 0.95rem;
  border-radius: 999px; cursor: pointer; border: 1px solid transparent;
  transition: transform var(--ease) .25s, box-shadow var(--ease) .25s, background .2s, color .2s;
  white-space: nowrap;
}
.btn--sm { padding: 8px 18px; font-size: 0.88rem; }
.btn--lg { padding: 15px 30px; font-size: 1rem; }
.btn--primary {
  background: linear-gradient(135deg, var(--emerald-300), var(--emerald-500));
  color: #fff; box-shadow: var(--shadow-md);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg), var(--glow); }
.btn--ghost {
  background: var(--surface); color: var(--emerald-500);
  border-color: var(--border); box-shadow: var(--shadow-sm);
}
.btn--ghost:hover { transform: translateY(-2px); border-color: var(--emerald-200); color: var(--emerald-400); }

/* ─── Brand lockup ─── */
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand img { display: block; }
.brand__text { display: flex; flex-direction: column; line-height: 1.05; }
.brand__name { font-weight: 800; font-size: 1.18rem; letter-spacing: -0.02em; color: var(--text-1); }
.brand__sub { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.22em; color: var(--text-3); }

/* ═══ NAV ═══ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .3s, box-shadow .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(253, 252, 248, 0.82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--border-soft);
  box-shadow: var(--shadow-sm);
}
.nav__inner { height: 70px; display: flex; align-items: center; justify-content: space-between; }
.nav__links { display: flex; align-items: center; gap: 24px; }
.nav__links a:not(.btn) { position: relative; font-size: 0.94rem; font-weight: 500; color: var(--text-2); transition: color .2s; }
.nav__links a:not(.btn)::after {
  content: ""; position: absolute; left: -9px; right: -9px; bottom: -8px; height: 2.5px;
  border-radius: 2px; background: var(--emerald-300);
  transform: scaleX(0); transform-origin: center; transition: transform .25s var(--ease), opacity .25s; opacity: 0;
}
.nav__links a:not(.btn):hover { color: var(--emerald-400); }
.nav__links a:not(.btn):hover::after { transform: scaleX(.7); opacity: .5; }
.nav__links a:not(.btn).active { color: var(--emerald-500); font-weight: 600; }
.nav__links a:not(.btn).active::after { transform: scaleX(1); opacity: 1; }
.nav__links a.btn { color: #fff; font-weight: 600; }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__toggle span { width: 24px; height: 2px; background: var(--text-1); border-radius: 2px; transition: .3s; }

/* ═══ HERO ═══ */
.hero { position: relative; padding: 150px 0 90px; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .5; }
.orb--1 { width: 520px; height: 520px; top: -160px; right: -120px;
  background: radial-gradient(circle, rgba(108,201,162,.6), transparent 70%); }
.orb--2 { width: 440px; height: 440px; bottom: -180px; left: -140px;
  background: radial-gradient(circle, rgba(15,157,118,.32), transparent 70%); }
.orb--3 { width: 600px; height: 600px; top: 50%; left: 50%; transform: translate(-50%,-50%);
  background: radial-gradient(circle, rgba(214,243,230,.7), transparent 65%); opacity: .8; }
.grid-fade {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 30%, transparent 75%);
}
.hero__inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 999px; padding: 7px 16px; font-size: 0.82rem; font-weight: 500;
  color: var(--text-2); box-shadow: var(--shadow-sm); margin-bottom: 26px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--emerald-300); box-shadow: 0 0 0 4px rgba(15,157,118,.16); }
.hero__title { font-size: clamp(2.35rem, 4.2vw, 3.55rem); font-weight: 800; line-height: 1.12; letter-spacing: 0; }
.grad {
  background: linear-gradient(110deg, var(--emerald-300) 10%, var(--emerald-500) 55%, var(--emerald-200) 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero__lead { margin-top: 26px; font-size: 1.12rem; color: var(--text-2); max-width: 540px; }
.hero__cta { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero__stats { margin-top: 42px; display: flex; align-items: flex-start; gap: 22px; }
.hero__stats > div:not(.vr) { max-width: 150px; }
.hero__stats strong { display: block; font-size: 0.98rem; font-weight: 800; color: var(--emerald-500); letter-spacing: 0; }
.hero__stats span { display: block; margin-top: 5px; font-size: 0.8rem; line-height: 1.45; color: var(--text-3); }
.hero__stats .vr { width: 1px; height: 38px; background: var(--border); }

/* hero visual */
.hero__visual { position: relative; }
.panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-xl); box-shadow: var(--shadow-lg); overflow: hidden;
}
.panel__bar { display: flex; align-items: center; gap: 7px; padding: 13px 18px; border-bottom: 1px solid var(--border-soft); background: var(--elevated); }
.panel__bar .d { width: 11px; height: 11px; border-radius: 50%; }
.panel__bar .r { background: #f0a3a3; } .panel__bar .y { background: #f0d28a; } .panel__bar .g { background: var(--emerald-200); }
.panel__title { margin-left: 10px; font-family: var(--mono); font-size: 0.74rem; color: var(--text-3); letter-spacing: .04em; }
.panel__body { padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.chat { max-width: 85%; padding: 11px 15px; border-radius: 14px; font-size: 0.9rem; line-height: 1.5; }
.chat--user { align-self: flex-end; background: linear-gradient(135deg, var(--emerald-300), var(--emerald-500)); color: #fff; border-bottom-right-radius: 5px; }
.chat--bot { align-self: flex-start; background: var(--overlay); color: var(--text-1); border-bottom-left-radius: 5px; }
.chat__tag { display: inline-block; font-size: 0.68rem; font-weight: 700; color: var(--emerald-500); background: var(--emerald-100); padding: 2px 8px; border-radius: 6px; margin-right: 6px; }
.tool {
  display: flex; align-items: center; gap: 11px;
  background: var(--elevated); border: 1px solid var(--border-soft);
  border-radius: 11px; padding: 11px 14px; font-size: 0.84rem;
}
.tool__ico { width: 26px; height: 26px; display: grid; place-items: center; background: var(--emerald-100); color: var(--emerald-500); border-radius: 8px; font-size: 0.9rem; }
.tool__name { font-family: var(--mono); font-weight: 600; color: var(--text-1); }
.tool__meta { color: var(--text-3); font-size: 0.78rem; margin-left: auto; }
.tool__ok { color: var(--emerald-400); font-weight: 700; }
.tool--run { border-color: var(--emerald-200); }
.tool__spin { width: 14px; height: 14px; border: 2px solid var(--emerald-200); border-top-color: var(--emerald-500); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.float-card {
  position: absolute; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 12px 16px; box-shadow: var(--shadow-md);
  display: flex; flex-direction: column; gap: 2px;
  animation: floaty 5s ease-in-out infinite;
}
.float-card--1 { top: 18px; left: -34px; }
.float-card--2 { bottom: 30px; right: -30px; animation-delay: -2.5s; }
.fc__k { font-size: 0.7rem; color: var(--text-3); font-weight: 600; }
.fc__v { font-size: 0.86rem; font-weight: 700; color: var(--emerald-500); }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ═══ STRIP ═══ */
.strip { border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); background: var(--surface); }
.strip__inner { display: flex; align-items: center; gap: 30px; padding: 22px 24px; flex-wrap: wrap; }
.strip__label { font-size: 0.86rem; color: var(--text-3); font-weight: 500; white-space: nowrap; }
.strip__items { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.strip__items span { font-weight: 600; font-size: 0.92rem; color: var(--text-2); }
.strip__items i { color: var(--emerald-200); font-style: normal; }

/* ═══ SECTIONS ═══ */
.section { padding: 96px 0; }
.section--alt { background: linear-gradient(180deg, var(--surface), var(--elevated)); border-top: 1px solid var(--border-soft); border-bottom: 1px solid var(--border-soft); }
.section__head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section__head h2 { font-size: clamp(1.9rem, 3.6vw, 2.7rem); font-weight: 800; letter-spacing: -0.025em; line-height: 1.15; }
#apps .section__head { max-width: 800px; }
.section__sub { margin-top: 16px; font-size: 1.06rem; color: var(--text-2); }

/* ─── Product grid ─── */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.prod-card {
  background: var(--surface); border: 1px solid var(--border-soft);
  border-radius: var(--r-lg); padding: 28px; box-shadow: var(--shadow-sm);
  transition: transform var(--ease) .3s, box-shadow var(--ease) .3s, border-color .3s;
}
.prod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--emerald-200); }
.prod-card--wide { grid-column: span 2; }
.prod-card__ico { width: 50px; height: 50px; display: grid; place-items: center; color: var(--emerald-500); background: var(--emerald-100); border-radius: 14px; margin-bottom: 18px; }
.prod-card__ico svg { width: 25px; height: 25px; }
.prod-card h3 { font-size: 1.24rem; font-weight: 700; letter-spacing: -0.01em; }
.prod-card p { margin-top: 10px; color: var(--text-2); font-size: 0.96rem; }
.ticks { margin-top: 16px; list-style: none; display: flex; flex-direction: column; gap: 8px; }
.ticks li { position: relative; padding-left: 26px; font-size: 0.92rem; color: var(--text-2); }
.ticks li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--emerald-400); font-weight: 800; background: var(--emerald-100); width: 18px; height: 18px; display: grid; place-items: center; border-radius: 50%; font-size: 0.7rem; }
.chips { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { font-family: var(--mono); font-size: 0.76rem; font-weight: 500; color: var(--emerald-500); background: var(--emerald-100); border: 1px solid var(--border-soft); padding: 5px 11px; border-radius: 8px; }

/* ─── App types · no-code ─── */
.apps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.app { background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--r-lg); padding: 26px; box-shadow: var(--shadow-sm); transition: transform var(--ease) .3s, box-shadow .3s, border-color .3s; }
.app:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--emerald-200); }
.app__ico { width: 52px; height: 52px; display: grid; place-items: center; background: var(--emerald-100); color: var(--emerald-500); border-radius: 14px; margin-bottom: 16px; }
.app__ico svg { width: 26px; height: 26px; }
.app h4 { font-size: 1.14rem; font-weight: 700; letter-spacing: -0.01em; }
.app p { margin-top: 8px; font-size: 0.92rem; color: var(--text-2); }
.app--cta { background: linear-gradient(150deg, var(--emerald-ink), var(--emerald-500)); border-color: transparent; }
.app--cta .app__ico { background: rgba(255,255,255,.16); color: #fff; }
.app--cta h4 { color: #fff; }
.app--cta p { color: rgba(255,255,255,.82); }

.lifecycle { margin-top: 34px; display: flex; align-items: center; justify-content: center; gap: 22px; flex-wrap: wrap; background: var(--surface); border: 1px solid var(--border-soft); border-radius: 999px; padding: 16px 28px; box-shadow: var(--shadow-sm); }
.lc__label { font-family: var(--mono); font-size: 0.72rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--emerald-400); }
.lc__steps { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.lc { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 0.95rem; color: var(--text-1); }
.lc i { font-family: var(--mono); font-style: normal; font-size: 0.7rem; font-weight: 700; color: var(--emerald-500); background: var(--emerald-100); width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; }
.lc__arrow { color: var(--emerald-200); font-weight: 700; }

/* ─── Capabilities ─── */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.cap { background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--r-lg); padding: 26px; position: relative; overflow: hidden; transition: transform var(--ease) .3s, box-shadow .3s; }
.cap:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.cap__n { font-family: var(--mono); font-size: 2.4rem; font-weight: 700; color: var(--emerald-100); position: absolute; top: 12px; right: 18px; line-height: 1; }
.cap h4 { font-size: 1.08rem; font-weight: 700; margin-bottom: 8px; position: relative; }
.cap p { font-size: 0.92rem; color: var(--text-2); position: relative; }

/* ─── Architecture diagram (deployment view) ─── */
.arch-diagram { display: flex; flex-direction: column; gap: 6px; }
.arch-flow { text-align: center; color: var(--emerald-200); font-size: 0.9rem; line-height: 1; margin: 2px 0; }

/* 横向分层条（场景层 / 模型层） */
.arch-band { position: relative; background: var(--emerald-100); border: 1px solid var(--gold-border); border-radius: var(--r-lg); padding: 16px 20px 16px 104px; }
.arch-band__label, .arch-core__label { position: absolute; left: 18px; top: 50%; transform: translateY(-50%); width: 70px; font-weight: 700; font-size: 0.92rem; color: var(--emerald-600); line-height: 1.25; }
.arch-band__items { display: flex; flex-wrap: wrap; gap: 10px; }
.arch-band__items span { flex: 1 1 110px; text-align: center; background: var(--surface); border: 1px solid var(--emerald-200); color: var(--emerald-600); border-radius: var(--r-md); padding: 11px 14px; font-weight: 600; font-size: 0.9rem; }
.arch-band--model .arch-band__items span { background: linear-gradient(135deg, var(--emerald-300), var(--emerald-500)); color: #fff; border-color: transparent; }

/* 核心：能力平台层 */
.arch-core { position: relative; background: var(--surface); border: 2px solid var(--emerald-300); border-radius: var(--r-lg); padding: 18px 20px 20px 104px; box-shadow: var(--shadow-sm); }
.arch-core__label { top: 24px; transform: none; color: var(--emerald-500); }
.arch-core__body { display: flex; flex-direction: column; gap: 12px; }

.arch-box { background: var(--surface); border: 1px solid var(--emerald-200); border-radius: var(--r-md); padding: 12px 14px; text-align: center; font-weight: 600; font-size: 0.9rem; color: var(--text-1); display: flex; flex-direction: column; gap: 5px; justify-content: center; }
.arch-box--gateway { background: linear-gradient(135deg, var(--emerald-300), var(--emerald-500)); color: #fff; border-color: transparent; font-size: 0.95rem; padding: 14px; }
.arch-box--app { background: var(--emerald-100); border-color: var(--emerald-200); color: var(--emerald-600); }
.arch-box--tall { padding: 14px 16px; }
.arch-box--tall b { font-size: 0.95rem; color: var(--text-1); }
.arch-box--tall small { font-weight: 500; font-size: 0.78rem; color: var(--text-2); line-height: 1.55; }

.arch-sub { background: var(--elevated); border: 1px solid var(--border-soft); border-radius: var(--r-md); padding: 12px 14px; }
.arch-sub__title { display: block; text-align: center; font-size: 0.82rem; font-weight: 700; letter-spacing: .03em; color: var(--emerald-600); margin-bottom: 10px; }
.arch-row { display: grid; gap: 10px; }
.arch-row--5 { grid-template-columns: repeat(5, 1fr); }
.arch-row--4 { grid-template-columns: repeat(4, 1fr); }
.arch-row--3 { grid-template-columns: repeat(3, 1fr); align-items: stretch; }

/* ─── Scenarios ─── */
.scn-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.scn { background: var(--surface); border: 1px solid var(--border-soft); border-radius: var(--r-lg); padding: 26px; transition: transform var(--ease) .3s, box-shadow .3s; }
.scn:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.scn__ico { width: 48px; height: 48px; display: grid; place-items: center; background: var(--emerald-100); color: var(--emerald-500); border-radius: 13px; margin-bottom: 16px; }
.scn__ico svg { width: 24px; height: 24px; }
.scn h4 { font-size: 1.06rem; font-weight: 700; margin-bottom: 8px; }
.scn p { font-size: 0.9rem; color: var(--text-2); }

/* ─── Services ─── */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.svc { background: linear-gradient(160deg, var(--surface), var(--elevated)); border: 1px solid var(--border-soft); border-radius: var(--r-lg); padding: 32px 28px; transition: transform var(--ease) .3s, box-shadow .3s, border-color .3s; position: relative; }
.svc::before { content: ""; position: absolute; top: 0; left: 28px; right: 28px; height: 3px; border-radius: 0 0 4px 4px; background: linear-gradient(90deg, var(--emerald-300), var(--emerald-200)); opacity: 0; transition: opacity .3s; }
.svc:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--emerald-200); }
.svc:hover::before { opacity: 1; }
.svc h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
.svc p { color: var(--text-2); font-size: 0.96rem; }

/* ─── About ─── */
.about-card {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.82fr 1.45fr;
  gap: 36px;
  align-items: stretch;
  background:
    linear-gradient(135deg, rgba(214, 243, 230, 0.58), rgba(253, 252, 248, 0.94) 42%),
    var(--surface);
  border: 1px solid rgba(15, 157, 118, 0.16);
  border-radius: var(--r-xl);
  padding: 22px;
  box-shadow: var(--shadow-md);
}
.about-card__aside {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  padding: 34px 30px;
  background: linear-gradient(150deg, var(--emerald-ink), var(--emerald-500));
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 330px;
}
.about-card__aside::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  right: -70px;
  bottom: -70px;
  border-radius: 50%;
  background: rgba(214, 243, 230, 0.16);
}
.about-card__kicker {
  position: relative;
  z-index: 1;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--emerald-100);
}
.about-card__aside h3 {
  position: relative;
  z-index: 1;
  margin-top: 18px;
  font-size: clamp(1.55rem, 2.7vw, 2.1rem);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: 0;
}
.about-card__tags {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
}
.about-card__tags span {
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.9);
  border-radius: 999px;
  padding: 7px 12px;
  font-size: 0.82rem;
  font-weight: 600;
}
.about-card__body {
  align-self: center;
  padding: 26px 24px 26px 0;
}
.about-card__body p {
  color: var(--text-1);
  font-size: 1.03rem;
  line-height: 1.95;
  text-align: left;
}
.about-card__body p + p {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--border-soft);
}

/* ═══ CTA ═══ */
.cta { padding: 40px 0 96px; }
.cta__inner { position: relative; text-align: center; background: linear-gradient(150deg, var(--emerald-ink), var(--emerald-500)); border-radius: var(--r-xl); padding: 72px 32px; overflow: hidden; box-shadow: var(--shadow-lg); }
.cta__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: .4; }
.cta__inner > * { position: relative; z-index: 1; }
.cta__inner h2 { color: #fff; font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; }
.cta__inner p { color: rgba(255,255,255,.82); font-size: 1.08rem; margin-top: 14px; max-width: 560px; margin-inline: auto; }
.cta__actions { margin-top: 30px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta .btn--ghost { background: rgba(255,255,255,.1); color: #fff; border-color: rgba(255,255,255,.3); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.cta .btn--ghost:hover { background: rgba(255,255,255,.18); }
.cta .btn--primary { background: #fff; color: var(--emerald-500); }
.cta__mail { margin-top: 24px; font-family: var(--mono); font-size: 0.9rem; color: rgba(255,255,255,.7) !important; }

/* ═══ FOOTER ═══ */
.footer { background: var(--surface); border-top: 1px solid var(--border-soft); padding: 56px 0 28px; }
.footer__inner { display: grid; grid-template-columns: 1.4fr 2fr; gap: 40px; padding-bottom: 36px; border-bottom: 1px solid var(--border-soft); }
.footer__brand p { margin-top: 14px; color: var(--text-3); font-size: 0.9rem; max-width: 280px; }
.footer__cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.footer__cols h5 { font-size: 0.78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); margin-bottom: 14px; }
.footer__cols a { display: block; font-size: 0.92rem; color: var(--text-2); margin-bottom: 9px; transition: color .2s; }
.footer__cols a:hover { color: var(--emerald-400); }
.footer__bottom { display: flex; justify-content: space-between; padding-top: 22px; font-size: 0.82rem; color: var(--text-3); }
.footer__bottom span:last-child { font-family: var(--mono); }

/* ═══ REVEAL ANIMATION ═══ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ═══ RESPONSIVE ═══ */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__visual { max-width: 520px; margin: 0 auto; }
  .arch-row--5 { grid-template-columns: repeat(3, 1fr); }
  .arch-row--4 { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .cap-grid, .svc-grid, .apps-grid { grid-template-columns: 1fr 1fr; }
  .prod-card--wide { grid-column: span 2; }
  .scn-grid { grid-template-columns: 1fr 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .nav__links {
    position: fixed; top: 70px; right: 0; left: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: rgba(253,252,248,.97); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
    padding: 16px 24px 24px; border-bottom: 1px solid var(--border);
    transform: translateY(-120%); transition: transform .35s var(--ease); box-shadow: var(--shadow-md);
  }
  .nav__links.open { transform: translateY(0); }
  .nav__links a { padding: 12px 4px; }
  .nav__links a.btn { margin-top: 8px; justify-content: center; }
  .nav__toggle { display: flex; }
  .nav { background: rgba(253,252,248,.9); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom-color: var(--border-soft); }
  .hero { padding: 120px 0 70px; }
  .prod-grid, .cap-grid, .svc-grid, .scn-grid, .apps-grid { grid-template-columns: 1fr; }
  .lc__arrow { display: none; }
  .lifecycle { border-radius: var(--r-lg); }
  /* 架构图：标签移到顶部、行收窄 */
  .arch-band, .arch-core { padding: 44px 14px 16px; }
  .arch-band__label, .arch-core__label { position: static; transform: none; width: auto; display: block; margin-bottom: 12px; }
  .arch-band__label br, .arch-core__label br { display: none; }
  .arch-core__label { padding-left: 4px; }
  .arch-row--5, .arch-row--4, .arch-row--3 { grid-template-columns: 1fr 1fr; }
  .prod-card--wide { grid-column: span 1; }
  .float-card { display: none; }
  .hero__stats { gap: 18px; flex-wrap: wrap; }
  .hero__stats .vr { display: none; }
  .footer__bottom { flex-direction: column; gap: 8px; }
  .section { padding: 70px 0; }
  .about-card { grid-template-columns: 1fr; gap: 18px; padding: 16px; }
  .about-card__aside { min-height: auto; padding: 28px 24px; }
  .about-card__body { padding: 8px 6px 12px; }
  .about-card__body p { font-size: 0.98rem; line-height: 1.85; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}