/* ============================================================
   企微护航 · 企业官网全站样式
   风格：简约 · 高端 · 大气（深海军蓝 + 香槟金）
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --bg-dark: #0a1120;
  --bg-dark-2: #0d1628;
  --bg-dark-3: #122038;
  --gold: #c9a96e;
  --gold-strong: #b8925a;
  --gold-light: #e8d6b2;
  --blue: #3d7bff;
  --red: #e5484d;
  --green: #2fa84f;
  --text-strong: #141c2e;
  --text-body: #4c5670;
  --text-muted: #8b94a7;
  --text-faint: #aab3c2;
  --line: #e7eaf1;
  --bg-soft: #f6f8fb;
  --white: #ffffff;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --shadow-sm: 0 4px 18px rgba(13, 22, 40, 0.06);
  --shadow-md: 0 14px 38px rgba(13, 22, 40, 0.1);
  --shadow-lg: 0 28px 70px rgba(13, 22, 40, 0.16);
  --nav-h: 72px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
    "MiSans", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-num: "DIN Alternate", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text-body);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
::selection { background: var(--gold); color: #fff; }

/* ---------- 布局工具 ---------- */
.container { width: min(1200px, calc(100% - 48px)); margin: 0 auto; }
.section { padding: 110px 0; }
.section--dark { background: var(--bg-dark); color: rgba(255, 255, 255, 0.82); }
.section--soft { background: var(--bg-soft); }
[id] { scroll-margin-top: calc(var(--nav-h) + 20px); }

/* ---------- 标题组件 ---------- */
.sec-label {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.22em;
  color: var(--gold-strong); text-transform: uppercase;
  margin-bottom: 18px;
}
.sec-label::before { content: ""; width: 28px; height: 2px; background: var(--gold); }
.section--dark .sec-label { color: var(--gold-light); }
.sec-title {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700; color: var(--text-strong);
  line-height: 1.32; letter-spacing: 0.01em;
}
.section--dark .sec-title { color: #fff; }
.sec-title .accent, .accent {
  background: linear-gradient(120deg, var(--gold) 10%, var(--gold-light) 90%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.sec-desc {
  margin-top: 18px; font-size: 16.5px; color: var(--text-body);
  max-width: 640px; line-height: 1.9;
}
.section--dark .sec-desc { color: rgba(255, 255, 255, 0.68); }
.sec-head { margin-bottom: 64px; }
.sec-head--center { text-align: center; }
.sec-head--center .sec-desc { margin-left: auto; margin-right: auto; }
.sec-head--center .sec-label::before { display: none; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 52px; padding: 0 32px; border-radius: 999px;
  font-size: 15.5px; font-weight: 600; letter-spacing: 0.04em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn--gold {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-strong) 100%);
  color: #fff; box-shadow: 0 10px 28px rgba(184, 146, 90, 0.35);
}
.btn--gold:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(184, 146, 90, 0.45); }
.btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.28); color: #fff;
  background: rgba(255, 255, 255, 0.04); backdrop-filter: blur(6px);
}
.btn--ghost:hover { border-color: var(--gold); color: var(--gold-light); transform: translateY(-2px); }
.btn--dark { background: var(--bg-dark); color: #fff; box-shadow: var(--shadow-md); }
.btn--dark:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); background: var(--bg-dark-3); }
.btn--outline { border: 1.5px solid var(--line); color: var(--text-strong); background: #fff; }
.btn--outline:hover { border-color: var(--gold); color: var(--gold-strong); transform: translateY(-2px); }
.btn--sm { height: 42px; padding: 0 22px; font-size: 14px; }
.btn .arrow { transition: transform 0.25s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--nav-h);
  display: flex; align-items: center;
  transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav--scrolled {
  background: rgba(10, 17, 32, 0.86);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 6px 24px rgba(5, 9, 18, 0.25);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; width: min(1200px, calc(100% - 48px)); margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand__mark {
  width: 40px; height: 40px; border-radius: 11px; flex: none;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-strong) 100%);
  display: grid; place-items: center; box-shadow: 0 6px 16px rgba(184, 146, 90, 0.4);
}
.brand__mark svg { width: 22px; height: 22px; }
.brand__name { font-size: 21px; font-weight: 700; letter-spacing: 0.06em; }
.brand__name small { display: block; font-size: 9.5px; font-weight: 500; letter-spacing: 0.3em; color: var(--gold); margin-top: -2px; }
.nav__links { display: flex; align-items: center; gap: 6px; }
.nav__link {
  position: relative; padding: 9px 18px; border-radius: 999px;
  font-size: 15px; color: rgba(255, 255, 255, 0.78); font-weight: 500;
  transition: color 0.25s ease, background 0.25s ease;
}
.nav__link:hover { color: #fff; background: rgba(255, 255, 255, 0.07); }
.nav__link--active { color: var(--gold-light); }
.nav__link--active::after {
  content: ""; position: absolute; left: 50%; bottom: 2px; transform: translateX(-50%);
  width: 16px; height: 2px; border-radius: 2px; background: var(--gold);
}
.nav__cta { margin-left: 14px; }
.nav__burger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav__burger span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.nav__burger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger--open span:nth-child(2) { opacity: 0; }
.nav__burger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端抽屉 */
.mobile-menu {
  position: fixed; inset: var(--nav-h) 0 auto 0; z-index: 99;
  background: rgba(10, 17, 32, 0.97); backdrop-filter: blur(16px);
  padding: 28px 24px 36px; display: none; flex-direction: column; gap: 6px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.mobile-menu--open { display: flex; }
.mobile-menu a {
  padding: 15px 10px; font-size: 17px; color: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06); font-weight: 500;
}
.mobile-menu a:last-of-type { border-bottom: none; color: var(--gold-light); }
.mobile-menu .btn { margin-top: 16px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, #0a1120 0%, #0d1830 46%, #101d38 100%);
  padding: calc(var(--nav-h) + 84px) 0 110px;
  color: #fff;
}
.hero::before { /* 网格纹理 */
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 38%, #000 25%, transparent 78%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 38%, #000 25%, transparent 78%);
}
.hero::after { /* 金色光晕 */
  content: ""; position: absolute; width: 620px; height: 620px; right: -180px; top: -140px;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.16) 0%, transparent 62%);
  pointer-events: none;
}
.hero__glow {
  position: absolute; width: 480px; height: 480px; left: -160px; bottom: -200px;
  background: radial-gradient(circle, rgba(61, 123, 255, 0.12) 0%, transparent 60%);
  pointer-events: none;
}
.hero__inner {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center;
}
.hero__badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 8px 18px; border-radius: 999px; font-size: 13.5px; letter-spacing: 0.08em;
  border: 1px solid rgba(201, 169, 110, 0.42); color: var(--gold-light);
  background: rgba(201, 169, 110, 0.08); margin-bottom: 28px;
}
.hero__badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 10px var(--gold); animation: pulse 2.2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
.hero__title {
  font-size: clamp(34px, 4.6vw, 56px); font-weight: 800;
  line-height: 1.24; letter-spacing: 0.01em; color: #fff;
}
.hero__title .line { display: block; }
.hero__sub {
  margin-top: 26px; font-size: 17px; line-height: 2;
  color: rgba(255, 255, 255, 0.72); max-width: 520px;
}
.hero__sub strong { color: var(--gold-light); font-weight: 600; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 40px; }
.hero__stats {
  display: flex; gap: 0; margin-top: 58px; padding-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.hero__stat { flex: 1; padding-right: 20px; }
.hero__stat + .hero__stat { border-left: 1px solid rgba(255, 255, 255, 0.1); padding-left: 28px; }
.hero__stat b {
  font-family: var(--font-num); font-size: clamp(30px, 3vw, 40px); font-weight: 700;
  background: linear-gradient(120deg, var(--gold-light), var(--gold));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  line-height: 1.1;
}
.hero__stat b i { font-style: normal; font-size: 0.55em; margin-left: 2px; }
.hero__stat > span { display: block; margin-top: 8px; font-size: 13.5px; color: rgba(255, 255, 255, 0.6); }
/* 数字 span 保险：不被标签规则误伤，保持 inline 与父级渐变金字 */
.hero__stat b > span { display: inline; font-size: inherit; }

/* ---------- 手机示意模型 ---------- */
.phone-wrap { position: relative; display: flex; justify-content: center; }
.phone {
  position: relative; width: 292px; flex: none;
  background: linear-gradient(165deg, #2a3448, #161e2e);
  border-radius: 44px; padding: 11px;
  box-shadow: 0 40px 90px rgba(2, 6, 15, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  animation: float 6s ease-in-out infinite;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.phone__screen {
  border-radius: 34px; background: #f2f3f5; overflow: hidden;
  height: 560px; display: flex; flex-direction: column; position: relative;
}
.phone__notch {
  position: absolute; top: 10px; left: 50%; transform: translateX(-50%);
  width: 84px; height: 22px; background: #161e2e; border-radius: 12px; z-index: 5;
}
.ph-status {
  display: flex; justify-content: space-between; align-items: center;
  padding: 13px 22px 6px; font-size: 12.5px; font-weight: 600; color: #1c2431;
}
.ph-status .icons { display: flex; align-items: center; gap: 5px; }
.ph-status .icons i { display: block; background: #1c2431; border-radius: 1px; }
.ph-status .icons i:nth-child(1) { width: 14px; height: 8px; clip-path: polygon(0 100%, 28% 100%, 28% 42%, 0 42%, 0 100%, 36% 100%, 36% 26%, 64% 26%, 64% 100%, 72% 100%, 72% 0, 100% 0, 100% 100%); }
.ph-status .icons i:nth-child(2) { width: 20px; height: 10px; border-radius: 3px; }
.ph-status .icons i:nth-child(3) { width: 12px; height: 10px; }
.ph-nav { display: flex; justify-content: space-between; padding: 8px 18px 4px; color: #1c2431; font-size: 17px; }
.ph-profile { display: flex; flex-direction: column; align-items: center; padding: 16px 0 14px; background: #fff; }
.ph-avatar {
  width: 74px; height: 74px; border-radius: 12px; overflow: hidden;
  background: linear-gradient(135deg, #d8dee9, #b9c3d4);
  display: grid; place-items: center; font-size: 26px; color: #fff; font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.ph-name { margin-top: 12px; font-size: 17px; font-weight: 600; color: #1c2431; display: flex; align-items: center; gap: 6px; }
.ph-name .tag {
  font-size: 10px; font-weight: 500; color: #4a76c5;
  background: rgba(74, 118, 197, 0.12); border-radius: 4px; padding: 2px 6px;
}
.ph-rows { background: #fff; margin-top: 8px; padding: 4px 0; }
.ph-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 13px 20px; font-size: 14px; color: #1c2431;
  border-bottom: 1px solid #f0f1f3;
}
.ph-row span:last-child { color: #9aa3b2; font-size: 13px; }
.ph-row--hl {
  background: linear-gradient(90deg, rgba(229, 72, 77, 0.07), rgba(229, 72, 77, 0.02));
  box-shadow: inset 3px 0 0 var(--red);
}
.ph-row--hl > span:first-child { font-weight: 600; color: var(--red); }
.ph-row--hl .hl-tag {
  font-size: 11px; color: #fff; background: var(--red); border-radius: 4px; padding: 3px 9px;
  box-shadow: 0 4px 10px rgba(229, 72, 77, 0.35);
}
.ph-footer { margin-top: auto; display: flex; gap: 0; border-top: 1px solid #e8eaee; background: #fff; }
.ph-footer button {
  flex: 1; padding: 14px 0; font-size: 14.5px; color: #4a76c5; font-weight: 500;
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.ph-footer button + button { border-left: 1px solid #e8eaee; }
.phone-caption {
  position: absolute; bottom: -34px; left: 50%; transform: translateX(-50%);
  font-size: 12px; color: rgba(255, 255, 255, 0.5); letter-spacing: 0.1em; white-space: nowrap;
}
/* 悬浮卡片 */
.float-card {
  position: absolute; z-index: 3;
  background: rgba(255, 255, 255, 0.97); border-radius: var(--radius);
  padding: 14px 18px; box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 12px;
  animation: float 7s ease-in-out infinite;
}
.float-card--a { top: 64px; left: -34px; animation-delay: 0.8s; }
.float-card--b { bottom: 120px; right: -40px; animation-delay: 1.6s; }
.float-card__icon {
  width: 40px; height: 40px; border-radius: 12px; flex: none;
  display: grid; place-items: center; font-size: 18px;
}
.float-card--a .float-card__icon { background: rgba(47, 168, 79, 0.12); }
.float-card--b .float-card__icon { background: rgba(201, 169, 110, 0.15); }
.float-card b { display: block; font-size: 14.5px; color: var(--text-strong); line-height: 1.4; }
.float-card span { font-size: 12px; color: var(--text-muted); }

/* ---------- 数据带 ---------- */
.metrics { background: var(--bg-dark-2); padding: 74px 0; position: relative; overflow: hidden; }
.metrics::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 60% 90% at 50% 110%, rgba(201, 169, 110, 0.1), transparent 60%);
}
.metrics__grid {
  position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.metric { text-align: center; padding: 12px 16px; }
.metric + .metric { border-left: 1px solid rgba(255, 255, 255, 0.09); }
.metric b {
  font-family: var(--font-num); font-size: clamp(34px, 3.6vw, 46px); font-weight: 700;
  background: linear-gradient(120deg, #fff 20%, var(--gold-light));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.metric b i { font-style: normal; font-size: 0.5em; }
.metric > span { display: block; margin-top: 6px; font-size: 14px; color: rgba(255, 255, 255, 0.62); }
/* 数字 span 保险：保持 inline 与父级渐变金字 */
.metric b > span { display: inline; font-size: inherit; }

/* ---------- 痛点卡片 ---------- */
.pain-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.pain-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 28px; transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative; overflow: hidden;
}
.pain-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--red), #ff7b7f);
  transform: scaleX(0); transform-origin: left; transition: transform 0.35s ease;
}
.pain-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.pain-card:hover::before { transform: scaleX(1); }
.pain-card__icon {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 20px;
  background: rgba(229, 72, 77, 0.09); display: grid; place-items: center;
}
.pain-card h3 { font-size: 18px; color: var(--text-strong); font-weight: 700; margin-bottom: 10px; }
.pain-card p { font-size: 14.5px; color: var(--text-body); line-height: 1.85; }
.pain-card__quote {
  margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line);
  font-size: 13px; color: var(--text-muted);
}

/* ---------- 解决方案卡片 ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.sol-card {
  position: relative; border-radius: var(--radius-lg); padding: 42px 38px;
  background: var(--white); border: 1px solid var(--line);
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
  overflow: hidden;
}
.sol-card::after {
  content: ""; position: absolute; right: -70px; top: -70px; width: 200px; height: 200px;
  border-radius: 50%; background: radial-gradient(circle, rgba(201, 169, 110, 0.1), transparent 70%);
  opacity: 0; transition: opacity 0.35s ease;
}
.sol-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(201, 169, 110, 0.45); }
.sol-card:hover::after { opacity: 1; }
.sol-card__no {
  position: absolute; top: 30px; right: 34px;
  font-family: var(--font-num); font-size: 64px; font-weight: 700; line-height: 1;
  color: rgba(20, 28, 46, 0.05); letter-spacing: -0.03em;
}
.sol-card__icon {
  width: 60px; height: 60px; border-radius: 16px; margin-bottom: 24px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(201, 169, 110, 0.16), rgba(201, 169, 110, 0.05));
  border: 1px solid rgba(201, 169, 110, 0.3);
}
.sol-card h3 { font-size: 21px; color: var(--text-strong); font-weight: 700; margin-bottom: 6px; }
.sol-card__en { font-size: 11.5px; letter-spacing: 0.24em; color: var(--gold-strong); text-transform: uppercase; margin-bottom: 14px; display: block; }
.sol-card p { font-size: 14.5px; line-height: 1.9; }
.sol-card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.sol-card__tags li {
  font-size: 12.5px; color: var(--gold-strong); background: rgba(201, 169, 110, 0.09);
  border: 1px solid rgba(201, 169, 110, 0.22); border-radius: 999px; padding: 4px 13px;
}

/* ---------- 服务流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.steps::before {
  content: ""; position: absolute; top: 34px; left: 6%; right: 6%; height: 2px;
  background: linear-gradient(90deg, rgba(201, 169, 110, 0.55), rgba(201, 169, 110, 0.12));
}
.step { position: relative; text-align: center; padding: 0 12px; }
.step__no {
  width: 68px; height: 68px; margin: 0 auto 24px; border-radius: 50%;
  background: var(--bg-dark); color: var(--gold-light);
  display: grid; place-items: center; font-family: var(--font-num);
  font-size: 24px; font-weight: 700; position: relative; z-index: 2;
  border: 1px solid rgba(201, 169, 110, 0.4);
  box-shadow: 0 0 0 8px var(--white), 0 10px 26px rgba(10, 17, 32, 0.2);
}
.section--soft .step__no { box-shadow: 0 0 0 8px var(--bg-soft), 0 10px 26px rgba(10, 17, 32, 0.2); }
.step h3 { font-size: 17.5px; color: var(--text-strong); font-weight: 700; margin-bottom: 10px; }
.step p { font-size: 14px; color: var(--text-body); line-height: 1.85; }

/* ---------- 案例 / 对比 ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.compare__col {
  border-radius: var(--radius-lg); padding: 40px 36px; border: 1px solid var(--line);
  background: #fff;
}
.compare__col--bad { background: linear-gradient(170deg, #fff, #fdf3f3); border-color: rgba(229, 72, 77, 0.25); }
.compare__col--good { background: linear-gradient(170deg, #fff, #f3faf4); border-color: rgba(47, 168, 79, 0.3); }
.compare__tag {
  display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600;
  padding: 6px 15px; border-radius: 999px; margin-bottom: 22px;
}
.compare__col--bad .compare__tag { color: var(--red); background: rgba(229, 72, 77, 0.1); }
.compare__col--good .compare__tag { color: var(--green); background: rgba(47, 168, 79, 0.1); }
.compare__col h3 { font-size: 20px; color: var(--text-strong); font-weight: 700; margin-bottom: 18px; }
.compare__list li {
  display: flex; gap: 12px; padding: 12px 0; font-size: 14.5px; line-height: 1.75;
  border-bottom: 1px dashed var(--line); color: var(--text-body);
}
.compare__list li:last-child { border-bottom: none; }
.compare__list li::before { flex: none; font-weight: 700; }
.compare__col--bad .compare__list li::before { content: "✕"; color: var(--red); }
.compare__col--good .compare__list li::before { content: "✓"; color: var(--green); }
.case-band {
  margin-top: 26px; border-radius: var(--radius-lg); padding: 34px 38px;
  background: linear-gradient(120deg, var(--bg-dark), var(--bg-dark-3));
  color: rgba(255, 255, 255, 0.8); display: flex; align-items: center; gap: 26px;
  border: 1px solid rgba(201, 169, 110, 0.25);
}
.case-band__icon {
  flex: none; width: 58px; height: 58px; border-radius: 16px;
  background: rgba(201, 169, 110, 0.14); display: grid; place-items: center;
  border: 1px solid rgba(201, 169, 110, 0.35);
}
.case-band b { color: var(--gold-light); }
.case-band p { font-size: 15px; line-height: 1.9; }

/* ---------- 产品服务页 ---------- */
.prod {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.prod + .prod { margin-top: 110px; }
.prod:nth-child(even) .prod__visual { order: -1; }
.prod__no {
  font-family: var(--font-num); font-size: 15px; font-weight: 700; letter-spacing: 0.2em;
  color: var(--gold-strong); margin-bottom: 14px; display: block;
}
.prod__title { font-size: clamp(24px, 2.6vw, 32px); font-weight: 800; color: var(--text-strong); line-height: 1.35; }
.prod__title .accent { background: linear-gradient(120deg, var(--gold), var(--gold-strong)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.prod__desc { margin-top: 18px; font-size: 15.5px; line-height: 2; }
.prod__list { margin-top: 26px; display: grid; gap: 14px; }
.prod__list li { display: flex; gap: 14px; align-items: flex-start; font-size: 15px; color: var(--text-body); }
.prod__list .check {
  flex: none; width: 24px; height: 24px; border-radius: 50%; margin-top: 2px;
  background: rgba(201, 169, 110, 0.13); color: var(--gold-strong);
  display: grid; place-items: center; font-size: 12px; font-weight: 700;
}
.prod__metric {
  display: inline-flex; align-items: baseline; gap: 8px; margin-top: 30px;
  padding: 14px 24px; border-radius: var(--radius); background: var(--bg-soft);
  border: 1px solid var(--line);
}
.prod__metric b { font-family: var(--font-num); font-size: 34px; font-weight: 700; color: var(--gold-strong); }
.prod__metric span { font-size: 13.5px; color: var(--text-muted); }
.prod__visual {
  border-radius: var(--radius-lg); overflow: hidden; position: relative;
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  background: linear-gradient(150deg, #0d1628, #16233f);
  min-height: 340px; display: grid; place-items: center; padding: 40px;
}
.prod__visual img { border-radius: var(--radius-sm); box-shadow: var(--shadow-md); }
.prod__visual--shot { background: #fff; }
.prod__shot-label {
  position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%);
  font-size: 12.5px; letter-spacing: 0.14em; color: rgba(255, 255, 255, 0.55);
  white-space: nowrap;
}
.prod__visual--shot .prod__shot-label { color: var(--text-muted); }

/* ---------- 养号指南 ---------- */
.section--guide { background: linear-gradient(180deg, #fbf8f2 0%, #f7f1e6 100%); }
.guide-chips {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  justify-content: center; margin-bottom: 54px;
}
.guide-chips__label { font-size: 13px; font-weight: 700; letter-spacing: 0.14em; color: var(--gold-strong); margin-right: 4px; }
.guide-chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid rgba(201, 169, 110, 0.35); border-radius: 999px;
  padding: 9px 18px; font-size: 13.5px; color: var(--text-body); box-shadow: var(--shadow-sm);
}
.guide-chip b { font-family: var(--font-num); font-size: 16px; color: var(--gold-strong); font-weight: 700; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.guide-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 36px 32px; transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative; overflow: hidden;
}
.guide-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  transform: scaleX(0); transform-origin: left; transition: transform 0.35s ease;
}
.guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(201, 169, 110, 0.45); }
.guide-card:hover::before { transform: scaleX(1); }
.guide-card__no {
  font-family: var(--font-num); font-size: 13px; font-weight: 700; letter-spacing: 0.2em;
  color: var(--gold-strong); display: block; margin-bottom: 12px;
}
.guide-card h3 { font-size: 19px; color: var(--text-strong); font-weight: 700; margin-bottom: 4px; }
.guide-card__sub { font-size: 13px; color: var(--text-muted); margin-bottom: 18px; }
.guide-card__list { display: grid; gap: 11px; }
.guide-card__list li {
  display: flex; gap: 10px; align-items: flex-start; font-size: 13.8px; line-height: 1.75; color: var(--text-body);
}
.guide-card__list li::before {
  content: ""; flex: none; width: 6px; height: 6px; border-radius: 50%;
  background: var(--gold); margin-top: 8px;
}
.guide-note {
  margin-top: 26px; border-radius: var(--radius-lg); padding: 34px 38px;
  background: #fff; border: 1px solid rgba(201, 169, 110, 0.35);
  display: grid; grid-template-columns: 1fr 1fr; gap: 30px;
  box-shadow: var(--shadow-sm);
}
.guide-note h4 { font-size: 15.5px; color: var(--text-strong); font-weight: 700; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.guide-note p { font-size: 13.8px; line-height: 1.95; color: var(--text-body); }

/* 场景标签 */
.scene-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.scene-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; display: flex; gap: 18px; align-items: flex-start;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.scene-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: rgba(201, 169, 110, 0.4); }
.scene-card__icon {
  flex: none; width: 48px; height: 48px; border-radius: 13px;
  background: linear-gradient(135deg, rgba(201, 169, 110, 0.16), rgba(201, 169, 110, 0.04));
  border: 1px solid rgba(201, 169, 110, 0.3);
  display: grid; place-items: center;
}
.scene-card h3 { font-size: 16.5px; color: var(--text-strong); font-weight: 700; margin-bottom: 5px; }
.scene-card p { font-size: 13.5px; line-height: 1.8; }

/* ---------- 关于我们 ---------- */
.page-hero {
  position: relative; overflow: hidden; color: #fff;
  background: linear-gradient(160deg, #0a1120 0%, #0e1a33 55%, #122040 100%);
  padding: calc(var(--nav-h) + 92px) 0 92px;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, #000 20%, transparent 75%);
}
.page-hero__inner { position: relative; z-index: 2; }
.page-hero .sec-label { color: var(--gold-light); }
.page-hero__title { font-size: clamp(30px, 4vw, 46px); font-weight: 800; line-height: 1.3; color: #fff; }
.page-hero__desc { margin-top: 20px; font-size: 16.5px; line-height: 2; color: rgba(255, 255, 255, 0.7); max-width: 660px; }
.crumb { display: flex; gap: 10px; align-items: center; font-size: 13.5px; color: rgba(255, 255, 255, 0.55); margin-bottom: 22px; }
.crumb a:hover { color: var(--gold-light); }
.crumb i { font-style: normal; color: rgba(255, 255, 255, 0.3); }

.about-intro { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; align-items: center; }
.about-intro__text p { margin-top: 18px; font-size: 15.5px; line-height: 2.05; }
.about-intro__text p strong { color: var(--text-strong); }
.about-visual {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: linear-gradient(150deg, #0d1628, #16233f);
  padding: 52px 44px; color: #fff; box-shadow: var(--shadow-lg);
}
.about-visual::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 85% 15%, rgba(201, 169, 110, 0.18), transparent 55%);
}
.about-visual__quote { position: relative; font-size: 20px; line-height: 1.9; font-weight: 600; }
.about-visual__quote::before {
  content: "“"; display: block; font-size: 74px; line-height: 0.6;
  color: var(--gold); font-family: Georgia, serif; margin-bottom: 18px;
}
.about-visual__from { position: relative; margin-top: 28px; font-size: 13.5px; color: rgba(255, 255, 255, 0.55); letter-spacing: 0.1em; }

.mvv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.mvv-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 44px 36px; text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.mvv-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-lg); border-color: rgba(201, 169, 110, 0.45); }
.mvv-card__icon {
  width: 66px; height: 66px; margin: 0 auto 22px; border-radius: 20px;
  background: linear-gradient(135deg, rgba(201, 169, 110, 0.18), rgba(201, 169, 110, 0.04));
  border: 1px solid rgba(201, 169, 110, 0.35);
  display: grid; place-items: center;
}
.mvv-card h3 { font-size: 20px; color: var(--text-strong); font-weight: 700; margin-bottom: 12px; }
.mvv-card p { font-size: 14.5px; line-height: 1.95; }

/* 时间轴 */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(201, 169, 110, 0.15));
}
.tl-item { position: relative; padding: 0 0 44px 26px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -33px; top: 7px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--white); border: 3px solid var(--gold);
  box-shadow: 0 0 0 5px rgba(201, 169, 110, 0.15);
}
.tl-item__year { font-family: var(--font-num); font-size: 22px; font-weight: 700; color: var(--gold-strong); }
.tl-item h3 { font-size: 17.5px; color: var(--text-strong); font-weight: 700; margin: 6px 0 8px; }
.tl-item p { font-size: 14.5px; line-height: 1.9; }

/* 联系方式 */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: stretch; max-width: 940px; margin: 0 auto; }
/* 二维码名片 */
.qr-card { text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.qr-card__title { font-size: 19px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.qr-card__sub { font-size: 13.5px; color: rgba(255, 255, 255, 0.55); margin-bottom: 30px; line-height: 1.8; }
.qr-card__img {
  width: 216px; height: 216px; border-radius: 18px; overflow: hidden;
  background: #fff; padding: 10px; box-shadow: 0 18px 44px rgba(2, 6, 15, 0.5);
}
.qr-card__img img { width: 100%; height: 100%; object-fit: cover; border-radius: 12px; }
.qr-card__id {
  margin-top: 26px; display: inline-flex; align-items: center; gap: 10px;
  padding: 11px 24px; border-radius: 999px; font-size: 16px; font-weight: 600;
  color: var(--gold-light); background: rgba(201, 169, 110, 0.12);
  border: 1px solid rgba(201, 169, 110, 0.4); letter-spacing: 0.04em;
}
.qr-card__tip { margin-top: 18px; font-size: 12.5px; color: rgba(255, 255, 255, 0.42); }
.contact-form {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 46px 44px; box-shadow: var(--shadow-sm);
}
.contact-form h3 { font-size: 22px; color: var(--text-strong); font-weight: 700; margin-bottom: 8px; }
.contact-form > p { font-size: 14.5px; margin-bottom: 30px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { margin-bottom: 20px; }
.form-field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--text-strong); margin-bottom: 8px; }
.form-field label em { font-style: normal; color: var(--red); margin-left: 2px; }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%; padding: 13px 16px; font-size: 14.5px; font-family: inherit;
  color: var(--text-strong); background: var(--bg-soft);
  border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  transition: border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
  appearance: none; outline: none;
}
.form-field textarea { resize: vertical; min-height: 128px; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--gold); background: #fff;
  box-shadow: 0 0 0 4px rgba(201, 169, 110, 0.12);
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--text-faint); }
.form-note { font-size: 12.5px; color: var(--text-muted); margin-top: 14px; line-height: 1.8; }
.form-success {
  display: none; text-align: center; padding: 40px 10px;
}
.form-success.show { display: block; }
.form-success__icon {
  width: 68px; height: 68px; margin: 0 auto 20px; border-radius: 50%;
  background: rgba(47, 168, 79, 0.1); color: var(--green);
  display: grid; place-items: center; font-size: 30px;
}
.form-success h4 { font-size: 19px; color: var(--text-strong); margin-bottom: 8px; }
.form-success p { font-size: 14px; color: var(--text-muted); }

.contact-info { display: grid; gap: 22px; }
.info-card {
  background: linear-gradient(160deg, var(--bg-dark), var(--bg-dark-3));
  border-radius: var(--radius-lg); padding: 38px 36px; color: #fff;
  border: 1px solid rgba(201, 169, 110, 0.22); position: relative; overflow: hidden;
}
.info-card::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 90% 8%, rgba(201, 169, 110, 0.16), transparent 52%);
}
.info-card h3 { position: relative; font-size: 19px; font-weight: 700; margin-bottom: 24px; color: #fff; }
.info-list { position: relative; display: grid; gap: 20px; }
.info-list li { display: flex; gap: 16px; align-items: flex-start; }
.info-list__icon {
  flex: none; width: 42px; height: 42px; border-radius: 12px;
  background: rgba(201, 169, 110, 0.13); border: 1px solid rgba(201, 169, 110, 0.32);
  display: grid; place-items: center;
}
.info-list b { display: block; font-size: 12.5px; color: rgba(255, 255, 255, 0.5); font-weight: 500; letter-spacing: 0.08em; margin-bottom: 3px; }
.info-list span { font-size: 15px; color: rgba(255, 255, 255, 0.92); font-weight: 500; word-break: break-all; }
.info-list a span:hover { color: var(--gold-light); }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; display: grid; gap: 16px; }
.faq-item {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item[open] { border-color: rgba(201, 169, 110, 0.45); box-shadow: var(--shadow-sm); }
.faq-item summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  gap: 16px; padding: 22px 28px; font-size: 16px; font-weight: 600; color: var(--text-strong);
  transition: color 0.25s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--gold-strong); }
.faq-item summary::after {
  content: "+"; flex: none; font-size: 22px; font-weight: 400; color: var(--gold);
  transition: transform 0.3s ease; line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item__body { padding: 0 28px 24px; font-size: 14.5px; line-height: 1.95; color: var(--text-body); }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  position: relative; overflow: hidden;
  background: linear-gradient(130deg, #0a1120 0%, #132038 60%, #1a2c4d 100%);
  border-radius: var(--radius-lg); padding: 72px 60px; color: #fff; text-align: center;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 55% 90% at 50% -20%, rgba(201, 169, 110, 0.2), transparent 65%);
}
.cta-band::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(ellipse 70% 90% at 50% 100%, #000 10%, transparent 70%);
  mask-image: radial-gradient(ellipse 70% 90% at 50% 100%, #000 10%, transparent 70%);
}
.cta-band__inner { position: relative; z-index: 2; }
.cta-band h2 { font-size: clamp(26px, 3.2vw, 38px); font-weight: 800; line-height: 1.4; }
.cta-band p { margin: 20px auto 0; font-size: 16px; color: rgba(255, 255, 255, 0.7); max-width: 560px; line-height: 2; }
.cta-band__actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-top: 38px; }

/* ---------- 页脚 ---------- */
.footer { background: var(--bg-dark); color: rgba(255, 255, 255, 0.66); padding: 76px 0 0; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 56px; }
.footer .brand { margin-bottom: 22px; }
.footer__about { font-size: 13.5px; line-height: 2; color: rgba(255, 255, 255, 0.5); max-width: 300px; }
.footer h4 { font-size: 15px; color: #fff; font-weight: 600; margin-bottom: 22px; letter-spacing: 0.06em; }
.footer__links { display: grid; gap: 13px; }
.footer__links a { font-size: 13.5px; color: rgba(255, 255, 255, 0.55); transition: color 0.25s ease, padding-left 0.25s ease; }
.footer__links a:hover { color: var(--gold-light); padding-left: 5px; }
.footer__contact { display: grid; gap: 14px; font-size: 13.5px; }
.footer__contact li { display: flex; gap: 10px; align-items: flex-start; line-height: 1.7; }
.footer__contact .ic { flex: none; color: var(--gold); font-size: 14px; line-height: 1.7; }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 24px 0; display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  font-size: 12.5px; color: rgba(255, 255, 255, 0.4);
}
.footer__bottom a:hover { color: var(--gold-light); }

/* ---------- 滚动显现动画（仅在 JS 可用时启用；脚本缺失/异常时内容全部直接可见，杜绝空白页） ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1); }
.js .reveal.visible { opacity: 1; transform: none; }
.js .reveal[data-delay="1"] { transition-delay: 0.1s; }
.js .reveal[data-delay="2"] { transition-delay: 0.2s; }
.js .reveal[data-delay="3"] { transition-delay: 0.3s; }
.js .reveal[data-delay="4"] { transition-delay: 0.4s; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .phone, .float-card { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero__inner { grid-template-columns: 1fr; gap: 70px; }
  .hero__sub { max-width: 640px; }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .sol-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 48px; }
  .steps::before { display: none; }
  .metrics__grid { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
  .metric + .metric { border-left: none; }
  .metric:nth-child(even) { border-left: 1px solid rgba(255, 255, 255, 0.09); }
  .about-intro, .prod, .contact-grid { grid-template-columns: 1fr; }
  .prod:nth-child(even) .prod__visual { order: 0; }
  .prod + .prod { margin-top: 72px; }
  .prod__visual { min-height: 280px; }
  .mvv-grid { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .section { padding: 76px 0; }
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: flex; }
  .hero { padding-top: calc(var(--nav-h) + 60px); }
  .hero__stats { flex-direction: column; gap: 26px; }
  .hero__stat + .hero__stat { border-left: none; padding-left: 0; border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 24px; }
  .pain-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .metrics__grid { grid-template-columns: 1fr 1fr; }
  .compare { grid-template-columns: 1fr; }
  .case-band { flex-direction: column; text-align: center; }
  .cta-band { padding: 54px 28px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 34px 26px; }
  .guide-grid { grid-template-columns: 1fr; }
  .guide-note { grid-template-columns: 1fr; gap: 22px; }
  .guide-card { padding: 30px 26px; }
  .footer__grid { grid-template-columns: 1fr; gap: 36px; }
  .phone { width: 260px; }
  .float-card--a { left: -8px; }
  .float-card--b { right: -8px; }
}