/* =========================================================
   南呱子科技官网 - style.css
   深色暖金风格 · 与品牌 logo 橙黄色调一致
   ========================================================= */

:root {
  --bg-0: #0c0906;
  --bg-1: #13100b;
  --bg-2: #1b1610;
  --bg-3: #241e15;
  --line: rgba(244, 167, 52, .16);
  --line-strong: rgba(244, 167, 52, .42);
  --main: #f4a734;
  --main-deep: #d7852a;
  --main-dark: #a4601c;
  --gold: #ffd27a;
  --text: #fff8f0;
  --muted: #cfc8bd;
  --muted-2: #9b9389;
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "Space Grotesk", "Noto Sans SC", sans-serif;
  --maxw: 1200px;
  --radius: 18px;
  --ease: cubic-bezier(.22, .61, .36, 1);
  --shadow: 0 24px 70px -20px rgba(0, 0, 0, .55);
  --header-h: 78px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-0);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(244, 167, 52, .3); color: #fff; }

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

ul, ol { list-style: none; }

h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }

/* ---------- 滚动条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--main), var(--gold));
  z-index: 1000;
  transition: width .1s linear;
}

/* ---------- 通用容器 ---------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

.only-lg { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 600;
  font-family: var(--font);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .35s var(--ease);
  white-space: nowrap;
}

.btn svg { width: 19px; height: 19px; transition: transform .35s var(--ease); }
.btn:hover svg { transform: translateX(4px); }

.btn-lg { padding: 16px 36px; font-size: 16px; }

.btn-block { width: 100%; }

.btn-solid {
  background: linear-gradient(135deg, #f4a734, #c57a24);
  color: #110a04;
  box-shadow: 0 10px 30px -10px rgba(244, 167, 52, .55);
}
.btn-solid:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px -12px rgba(244, 167, 52, .65);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover {
  background: rgba(244, 167, 52, .08);
  border-color: var(--main);
}

.btn-invert { background: #0c0906; color: var(--main); }
.btn-invert:hover { background: #0d0805; }

.btn-nav {
  padding: 11px 24px;
  font-size: 14.5px;
  box-shadow: none;
}

/* ---------- 头部 / 导航 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: all .4s var(--ease);
  background: linear-gradient(180deg, rgba(12, 9, 6, .85), transparent);
}

.site-header.scrolled {
  background: rgba(19, 16, 11, .82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap { display: flex; align-items: center; gap: 32px; }

.brand { display: inline-flex; align-items: center; gap: 13px; }

.brand-logo { height: 42px; width: auto; object-fit: contain; filter: brightness(1.05) drop-shadow(0 2px 8px rgba(244,167,52,.12)); }
.f-brand .brand-logo { height: 38px; }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 4px; }
.main-nav a {
  display: block;
  padding: 10px 15px;
  font-size: 15px;
  color: var(--muted);
  position: relative;
  transition: color .3s;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 15px; right: 15px; bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--main), var(--gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.main-nav a:hover, .main-nav a.active { color: var(--text); }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); }

.btn-nav { margin-left: auto; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 46px; height: 46px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  cursor: pointer;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 20px; height: 2px;
  margin: 0 auto;
  background: var(--text);
  border-radius: 2px;
  transition: all .35s var(--ease);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 120px;
  overflow: hidden;
}

.hero-bg { position: absolute; inset: 0; z-index: -1; }

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(160, 100, 30, .22), transparent 60%),
    radial-gradient(900px 600px at 10% 110%, rgba(244, 167, 52, .1), transparent 60%),
    radial-gradient(600px 500px at 50% 50%, rgba(12, 9, 6, 0) 60%, var(--bg-0) 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244, 207, 140, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 207, 140, .05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, #000 20%, transparent 75%);
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .5;
  animation: float 14s ease-in-out infinite;
}
.orb-a { width: 420px; height: 420px; top: -120px; right: -80px; background: rgba(18, 180, 127, .35); }
.orb-b { width: 320px; height: 320px; bottom: 6%; left: -100px; background: rgba(244, 167, 52, .16); animation-delay: -5s; }
.orb-c { width: 200px; height: 200px; top: 40%; right: 22%; background: rgba(255, 210, 122, .1); animation-delay: -9s; }

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(20px, -26px); }
}

.hero-inner { text-align: center; }

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 13.5px;
  letter-spacing: 2px;
  color: var(--main);
  background: rgba(244, 167, 52, .05);
  margin-bottom: 34px;
}
.hero-tag .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--main);
  box-shadow: 0 0 0 0 rgba(244, 167, 52, .6);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(244, 167, 52, .55); }
  70% { box-shadow: 0 0 0 11px rgba(244, 167, 52, 0); }
  100% { box-shadow: 0 0 0 0 rgba(244, 167, 52, 0); }
}

.hero-title {
  font-size: clamp(40px, 7.2vw, 84px);
  font-weight: 900;
  letter-spacing: 2px;
  line-height: 1.18;
  margin-bottom: 30px;
}

.grad-text {
  background: linear-gradient(92deg, #f7cf9a 0%, #f4a734 45%, #ffd27a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-sub {
  max-width: 660px;
  margin: 0 auto 44px;
  font-size: clamp(16px, 1.7vw, 19px);
  color: var(--muted);
}
.hero-sub em {
  font-style: normal;
  color: var(--text);
  font-weight: 600;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 74px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 840px;
  margin: 0 auto;
}
.metric {
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, .03), rgba(255, 255, 255, .008));
  backdrop-filter: blur(6px);
  text-align: left;
  transition: all .4s var(--ease);
}
.metric:hover { border-color: var(--line-strong); transform: translateY(-4px); background: rgba(244, 167, 52, .05); }
.metric strong {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(24px, 3vw, 34px);
  color: var(--main);
  margin-bottom: 4px;
  letter-spacing: 1px;
}
.metric span { color: var(--muted-2); font-size: 14px; }

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  opacity: .6;
  transition: opacity .3s;
}
.scroll-hint:hover { opacity: 1; }
.mouse {
  display: block;
  width: 25px; height: 40px;
  border: 2px solid var(--muted-2);
  border-radius: 14px;
  position: relative;
}
.wheel {
  position: absolute;
  top: 7px; left: 50%;
  width: 3px; height: 8px;
  margin-left: -1.5px;
  border-radius: 3px;
  background: var(--main);
  animation: wheel 1.8s var(--ease) infinite;
}
@keyframes wheel {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(13px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* =========================================================
   区块通用
   ========================================================= */
.section { padding: 120px 0; position: relative; }

.section-head {
  max-width: 780px;
  margin: 0 auto 64px;
  text-align: center;
}
.section-head.left { margin: 0 0 48px; text-align: left; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 5px;
  color: var(--main);
  margin-bottom: 18px;
  text-transform: uppercase;
}
.kicker::before {
  content: "";
  width: 30px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--main));
}
.section-head.left .kicker::before { display: none; }
.section-head.left .kicker::after {
  content: "";
  width: 30px; height: 1px;
  background: linear-gradient(90deg, var(--main), transparent);
}

.section-title {
  font-size: clamp(30px, 4.4vw, 48px);
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 18px;
}
.section-sub { color: var(--muted); font-size: 16.5px; }

/* ---------- 关于我们 ---------- */
.about { background: linear-gradient(180deg, var(--bg-0), var(--bg-1)); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.08fr;
  gap: 70px;
  align-items: center;
}

.about-frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  padding: 26px;
  background: linear-gradient(160deg, rgba(244, 167, 52, .05), rgba(255, 255, 255, .015));
  box-shadow: var(--shadow);
}
.about-frame::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, var(--main-dark), transparent 40%, transparent 60%, rgba(255, 210, 122, .4));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: .6;
}

.about-graphic {
  position: relative;
  border-radius: var(--radius);
  background:
    radial-gradient(500px 300px at 60% 30%, rgba(244, 167, 52, .08), transparent 60%);
  min-height: 380px;
  overflow: hidden;
}
.about-graphic::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(244, 207, 140, .04) 1px, transparent 1px);
  background-size: 34px 34px;
}
.graphic-waves { width: 100%; height: 100%; position: absolute; inset: 0; }

.graphic-nodes circle { animation: nodePulse 3s ease-in-out infinite; }
.graphic-nodes circle:nth-child(2) { animation-delay: .6s; }
.graphic-nodes circle:nth-child(3) { animation-delay: 1.2s; }
.graphic-nodes circle:nth-child(4) { animation-delay: 1.8s; }
@keyframes nodePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

.g-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 18px;
  background: rgba(27, 22, 16, .86);
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  backdrop-filter: blur(8px);
  box-shadow: 0 14px 34px -12px rgba(0, 0, 0, .6);
  animation: float 8s ease-in-out infinite;
}
.g-chip i { font-style: normal; font-size: 22px; }
.g-chip span { font-size: 13px; font-weight: 700; line-height: 1.35; color: var(--text); }
.g-chip small { font-size: 10px; color: var(--muted); font-weight: 400; letter-spacing: 1px; }
.g-chip-1 { top: 14%; left: 6%; }
.g-chip-2 { top: 40%; right: 4%; animation-delay: -2s; }
.g-chip-3 { bottom: 26%; left: 10%; animation-delay: -4s; }
.g-chip-4 { bottom: 8%; right: 12%; animation-delay: -6s; }

.about-content p { color: var(--muted); margin-bottom: 20px; }
.about-content p strong { color: var(--text); font-weight: 600; }

.about-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px 28px;
  margin: 34px 0;
}
.about-points li { display: flex; gap: 15px; }
.pt-num {
  flex: none;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  color: var(--main);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 6px 9px;
  height: fit-content;
  background: rgba(244, 167, 52, .06);
}
.about-points h4 { font-size: 16.5px; margin-bottom: 4px; }
.about-points p { font-size: 14px; color: var(--muted-2); margin: 0; }

.about-badges { display: flex; gap: 20px; flex-wrap: wrap; }
.badge {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .02);
}
.badge svg { width: 26px; height: 26px; color: var(--gold); flex: none; }
.badge span { font-size: 14.5px; font-weight: 600; line-height: 1.3; }
.badge small { font-size: 11.5px; color: var(--muted-2); font-weight: 400; }

/* ---------- 核心业务 ---------- */
.services { background: var(--bg-1); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.svc-card {
  position: relative;
  padding: 34px 30px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(255, 255, 255, .03), rgba(255, 255, 255, .006));
  overflow: hidden;
  transition: all .45s var(--ease);
}
.svc-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--main), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .5s var(--ease);
}
.svc-card:hover { transform: translateY(-8px); border-color: var(--line-strong); background: linear-gradient(170deg, rgba(244, 167, 52, .07), rgba(255, 255, 255, .01)); }
.svc-card:hover::before { transform: scaleX(1); }

.svc-card.highlight {
  border-color: var(--line-strong);
  background:
    radial-gradient(300px 200px at 85% 0%, rgba(255, 210, 122, .1), transparent 60%),
    linear-gradient(170deg, rgba(244, 167, 52, .09), rgba(255, 255, 255, .008));
}
.svc-card.highlight::before { transform: scaleX(1); background: linear-gradient(90deg, var(--gold), var(--main)); }

.svc-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 22px; }
.svc-icon {
  width: 58px; height: 58px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: var(--main);
  border-radius: 16px;
  background: rgba(244, 167, 52, .09);
  border: 1px solid rgba(244, 167, 52, .22);
  transition: all .4s var(--ease);
}
.svc-card:hover .svc-icon { transform: rotate(-6deg) scale(1.06); background: rgba(244, 167, 52, .16); }
.svc-card.highlight .svc-icon { color: var(--gold); background: rgba(255, 210, 122, .1); border-color: rgba(255, 210, 122, .3); }

.svc-num {
  font-family: var(--font-en);
  font-size: 15px;
  color: var(--muted-2);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 999px;
}

.svc-card h3 { font-size: 20px; margin-bottom: 12px; }
.svc-card p { font-size: 14.5px; color: var(--muted); margin-bottom: 20px; }
.svc-tags {
  display: inline-block;
  font-size: 12px;
  color: var(--main-deep);
  padding: 7px 13px;
  border-radius: 999px;
  background: rgba(244, 167, 52, .06);
  border: 1px dashed rgba(244, 167, 52, .25);
}

/* ---------- 行业方案 ---------- */
.solutions {
  background:
    radial-gradient(1000px 500px at 50% 0%, rgba(160, 100, 30, .12), transparent 60%),
    var(--bg-0);
}

.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }

.sol-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-2);
  transition: all .45s var(--ease);
}
.sol-card:hover { transform: translateY(-8px); border-color: var(--line-strong); box-shadow: var(--shadow); }

.sol-illus {
  position: relative;
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}
.sol-illus[data-idx="ecom"] {
  background:
    radial-gradient(340px 200px at 70% 20%, rgba(244, 167, 52, .16), transparent 60%),
    linear-gradient(160deg, rgba(244, 167, 52, .05), transparent);
}
.sol-illus[data-idx="gov"] {
  background:
    radial-gradient(340px 200px at 30% 20%, rgba(255, 210, 122, .13), transparent 60%),
    linear-gradient(160deg, rgba(255, 210, 122, .04), transparent);
}
.sol-illus[data-idx="agri"] {
  background:
    radial-gradient(340px 200px at 50% 80%, rgba(244, 167, 52, .15), transparent 60%),
    linear-gradient(160deg, rgba(244, 167, 52, .05), transparent);
}

.sol-icon { font-size: 52px; filter: drop-shadow(0 10px 20px rgba(0, 0, 0, .4)); transition: transform .5s var(--ease); }
.sol-card:hover .sol-icon { transform: scale(1.15) rotate(-6deg); }

.mini-chart { position: absolute; bottom: 18px; left: 22px; display: flex; align-items: flex-end; gap: 5px; }
.mini-chart i {
  width: 9px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--main), rgba(244, 167, 52, .2));
  animation: chartGrow 2.6s var(--ease) infinite;
}
.mini-chart i:nth-child(1) { height: 16px; animation-delay: 0s; }
.mini-chart i:nth-child(2) { height: 30px; animation-delay: .2s; }
.mini-chart i:nth-child(3) { height: 22px; animation-delay: .4s; }
.mini-chart i:nth-child(4) { height: 44px; animation-delay: .6s; }
.mini-chart i:nth-child(5) { height: 36px; animation-delay: .8s; }
@keyframes chartGrow {
  0%, 100% { transform: scaleY(1); transform-origin: bottom; }
  50% { transform: scaleY(.72); transform-origin: bottom; }
}

.mini-rings { position: absolute; right: 18px; bottom: 12px; width: 90px; height: 90px; }
.mini-rings span { position: absolute; inset: 0; border: 1px dashed rgba(255, 210, 122, .4); border-radius: 50%; animation: spin 12s linear infinite; }
.mini-rings span:nth-child(2) { inset: 18px; border-color: rgba(255, 210, 122, .28); animation-direction: reverse; animation-duration: 9s; }
.mini-rings span:nth-child(3) { inset: 36px; border-color: rgba(255, 210, 122, .5); animation-duration: 6s; }
@keyframes spin { to { transform: rotate(360deg); } }

.agri-field { position: absolute; left: 22px; bottom: 10px; width: 130px; height: 80px; }
.agri-field .row { position: absolute; left: 0; width: 100%; height: 5px; border-radius: 5px; background: linear-gradient(90deg, transparent, rgba(244, 167, 52, .55), transparent); }
.agri-field .r1 { top: 12px; }
.agri-field .r2 { top: 38px; width: 84%; }
.agri-field .r3 { top: 62px; width: 66%; }

.sol-body { padding: 28px 26px 30px; }
.sol-body h3 { font-size: 21px; margin-bottom: 10px; }
.sol-body > p { font-size: 14.5px; color: var(--muted); margin-bottom: 16px; }
.sol-body ul { display: grid; gap: 8px; }
.sol-body li {
  position: relative;
  padding-left: 20px;
  font-size: 13.5px;
  color: var(--muted-2);
}
.sol-body li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 9px; height: 9px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--main), var(--main-dark));
  transform: rotate(45deg);
}

/* ---------- 为什么选择 ---------- */
.why {
  background:
    radial-gradient(900px 500px at 100% 100%, rgba(160, 100, 30, .1), transparent 60%),
    var(--bg-1);
}

.why-wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: start; }

.why-list { display: grid; gap: 18px; }
.why-item {
  display: flex;
  gap: 22px;
  align-items: flex-start;
  padding: 26px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .02);
  transition: all .4s var(--ease);
}
.why-item:hover { transform: translateX(8px); border-color: var(--line-strong); background: rgba(244, 167, 52, .05); }
.why-ic {
  flex: none;
  width: 54px; height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  border-radius: 14px;
  background: rgba(244, 167, 52, .08);
  border: 1px solid rgba(244, 167, 52, .2);
}
.why-item h4 { font-size: 17.5px; margin-bottom: 6px; }
.why-item p { font-size: 14.5px; color: var(--muted); }

/* ---------- CTA 横幅 ---------- */
.cta-banner { padding: 40px 0; }

.cta-inner {
  position: relative;
  text-align: center;
  padding: 84px 40px;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(244, 167, 52, .3);
  background:
    radial-gradient(700px 340px at 20% 0%, rgba(244, 167, 52, .18), transparent 60%),
    radial-gradient(600px 300px at 90% 100%, rgba(255, 210, 122, .1), transparent 60%),
    linear-gradient(135deg, #2a1e0e, #1b1610 55%, #201608);
}
.cta-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(244, 207, 140, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(244, 207, 140, .05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, #000, transparent 75%);
}
.cta-inner > * { position: relative; }
.cta-inner h2 { font-size: clamp(28px, 4vw, 46px); font-weight: 800; margin-bottom: 16px; }
.cta-inner p { color: var(--muted); margin-bottom: 36px; font-size: 17px; }

/* ---------- 服务流程 ---------- */
.process { background: var(--bg-0); }

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  counter-reset: step;
  position: relative;
}
.process-steps li {
  position: relative;
  padding: 34px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, .025), transparent);
  text-align: left;
  transition: all .4s var(--ease);
}
.process-steps li:hover { border-color: var(--line-strong); transform: translateY(-6px); background: rgba(244, 167, 52, .04); }

.step-num {
  display: inline-flex;
  font-family: var(--font-en);
  font-size: 30px;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1.2px var(--main-deep);
  margin-bottom: 16px;
  transition: all .4s;
}
.process-steps li:hover .step-num { color: var(--main); -webkit-text-stroke: 0; }

.process-steps h4 { font-size: 17px; margin-bottom: 8px; }
.process-steps p { font-size: 13.5px; color: var(--muted-2); }

/* ---------- 联系 ---------- */
.contact {
  background:
    radial-gradient(900px 500px at 0% 100%, rgba(160, 100, 30, .1), transparent 60%),
    var(--bg-1);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 70px;
  align-items: start;
}

.contact-info .section-sub { color: var(--muted); margin-top: 18px; font-size: 15.5px; }

.contact-list { margin-top: 40px; display: grid; gap: 14px; }
.contact-list li {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, .018);
  transition: all .3s;
}
.contact-list li:hover { border-color: var(--line-strong); background: rgba(244, 167, 52, .04); }
.ci-ic { flex: none; width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; font-size: 20px; border-radius: 12px; background: rgba(244, 167, 52, .08); border: 1px solid rgba(244, 167, 52, .18); }
.contact-list small { display: block; font-size: 12px; color: var(--muted-2); margin-bottom: 2px; }
.contact-list a, .contact-list span { font-size: 15px; font-weight: 500; color: var(--text); }
.contact-list a:hover { color: var(--main); }

.contact-form {
  padding: 40px 38px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(170deg, rgba(255, 255, 255, .035), rgba(255, 255, 255, .01));
  box-shadow: var(--shadow);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { margin-bottom: 22px; }
.field label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 9px; font-weight: 500; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font);
  font-size: 15px;
  color: var(--text);
  background: rgba(12, 9, 6, .6);
  border: 1px solid var(--line);
  border-radius: 12px;
  outline: none;
  transition: all .3s;
  resize: vertical;
}
.field select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--main) 50%), linear-gradient(135deg, var(--main) 50%, transparent 50%); background-position: calc(100% - 21px) 50%, calc(100% - 16px) 50%; background-size: 5px 5px; background-repeat: no-repeat; }
.field select option { background: var(--bg-2); }
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--main);
  box-shadow: 0 0 0 3px rgba(244, 167, 52, .12);
}
.field input.invalid { border-color: #ff6b6b; }

.form-tip { font-size: 12.5px; color: var(--muted-2); text-align: center; margin-top: 14px; }
.form-success {
  margin-top: 16px;
  text-align: center;
  padding: 14px;
  border-radius: 12px;
  background: rgba(244, 167, 52, .1);
  border: 1px solid rgba(244, 167, 52, .35);
  color: var(--main);
  font-weight: 500;
  font-size: 14.5px;
}

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: #0a0705;
  padding: 76px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 50px;
  padding-bottom: 56px;
}

.f-brand .brand { margin-bottom: 20px; }
.f-brand p { font-size: 14px; color: var(--muted-2); max-width: 320px; }

.f-col h4 { font-size: 15px; color: var(--text); margin-bottom: 20px; letter-spacing: 1px; }
.f-col ul { display: grid; gap: 11px; }
.f-col a { font-size: 14px; color: var(--muted-2); transition: all .3s; }
.f-col a:hover { color: var(--main); padding-left: 6px; }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding: 24px 28px;
}
.footer-bottom p { font-size: 13px; color: var(--muted-2); }
.footer-bottom .legal { color: var(--main-deep); letter-spacing: 1px; }

/* =========================================================
   入场动画
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal[data-delay="3"] { transition-delay: .36s; }
.reveal[data-delay="4"] { transition-delay: .48s; }

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

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1024px) {
  .services-grid, .sol-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 50px; }
  .why-wrap { grid-template-columns: 1fr; gap: 44px; }
  .contact-grid { grid-template-columns: 1fr; gap: 50px; }
  .process-steps { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .btn-nav { display: none; }
  .nav-toggle { display: flex; }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(12, 9, 6, .96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line);
    padding: 16px 28px 28px;
    transform: translateY(-140%);
    transition: transform .45s var(--ease);
    margin: 0;
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav ul { flex-direction: column; gap: 2px; }
  .main-nav a { padding: 14px 6px; font-size: 17px; border-bottom: 1px dashed var(--line); }
  .main-nav a::after { display: none; }

  .only-lg { display: block; }
  .only-lg br { display: none; }

  .hero-metrics { grid-template-columns: 1fr; max-width: 460px; }
  .metric { text-align: center; }
  .scroll-hint { display: none; }

  .section { padding: 90px 0; }
}

@media (max-width: 640px) {
  .services-grid, .sol-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .about-points { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .hero-actions .btn { width: 100%; }
  .contact-form { padding: 28px 20px; }
  .hero-title br.only-lg { display: block; }
  .container { padding: 0 20px; }
}