/* =========================================================
   鐩涜瘹鍗氫簯绉戞妧鏈夐檺鍏徃 - 妯″瀷鏈嶅姟锛堥潤鎬佺珯鐐癸級
   涓昏壊 #247dff
   ========================================================= */

:root {
  --primary: #247dff;
  --primary-rgb: 36, 125, 255;
  --primary-light-3: #66a4ff;
  --primary-light-5: #92beff;
  --primary-light-7: #bdd8ff;
  --primary-light-8: #d3e5ff;
  --primary-light-9: #e9f2ff;
  --primary-dark: #1d64cc;
  --link-hover: #0a16f1;

  --text-primary: #303133;
  --text-regular: #606266;
  --text-secondary: #909399;
  --heading: #1a2b4a;

  --border: #dcdfe6;
  --bg: #f4f7fc;
  --bg-soft: #f1f6fd;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;

  --shadow-card: 0 10px 34px rgba(63, 120, 179, 0.12);
  --shadow-hover: 0 23px 69px 7px rgba(101, 151, 207, 0.2);
  --shadow-nav: 0 6px 30px rgba(159, 176, 203, 0.25);

  --container: 1360px;
  --font: "PingFang SC", "Helvetica Neue", "Microsoft YaHei", "寰蒋闆呴粦", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

/* 锚点定位时留出吸顶导航高度 */
section[id] { scroll-margin-top: 76px; }

body {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 闃叉 grid/flex 瀛愰」鍥犲唴瀹规渶灏忓搴︽拺鐮村鍣紙绉诲姩绔í鍚戞孩鍑猴級 */
.model-grid > *, .pricing-wrap > *, .value-grid > *, .biz-grid > *,
.contact-grid > *, .footer-top > *, .stats > *, .panel-inner > *,
.about-intro > *, .intro-grid > *, .product-grid > *, .node-grid > *,
.intro-highlights > * { min-width: 0; }

a { color: inherit; text-decoration: none; transition: color .3s; }
a:hover { color: var(--link-hover); }
ul { list-style: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 40px;
}

/* ---------------- Buttons ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 26px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  transition: all .3s;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(var(--primary-rgb), .3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(var(--primary-rgb), .4);
}

.btn-ghost {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--primary-light-7);
}
.btn-ghost:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light-9);
  transform: translateY(-2px);
}

.btn-sm { height: 38px; padding: 0 20px; font-size: 14px; }

/* ---------------- Header ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 64px;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid #eef3fb;
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: .5px;
}
.logo .logo-img {
  height: 40px;
  width: auto;
  display: block;
}
.logo span b { color: inherit; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 100%;
}
.nav-menu > li { height: 100%; display: flex; align-items: center; }
.nav-menu a {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 500;
  color: #212121;
}
.nav-menu a::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 3px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
  transform: scaleX(0);
  transition: transform .3s;
}
.nav-menu a:hover { color: var(--primary); }
.nav-menu a:hover::after,
.nav-menu a.active::after { transform: scaleX(1); }
.nav-menu a.active { color: var(--primary); }
.nav-menu a .ext {
  width: 11px; height: 11px;
  margin-left: 4px;
  opacity: .6;
}

.header-actions { display: flex; align-items: center; gap: 14px; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 8px;
  place-items: center;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: #313131;
  position: relative;
  transition: .3s;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: ""; position: absolute; left: 0;
  width: 22px; height: 2px; background: #313131; transition: .3s;
}
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after { top: 0; transform: rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  background: url("../img/hero10.7f7014f3.jpg") center right / cover no-repeat, #eef4ff;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #f4f7fc 0%, rgba(244, 247, 252, .94) 34%, rgba(244, 247, 252, .55) 62%, rgba(244, 247, 252, 0) 100%);
}
.hero .container { position: relative; z-index: 1; padding: 128px 40px 132px; }

.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.hero-badges span {
  display: inline-block;
  padding: 5px 16px;
  border-radius: 21px;
  font-size: 13px;
  color: #fff;
  background: linear-gradient(120deg, #5b8df6, #88adf1);
  box-shadow: 0 6px 14px rgba(91, 141, 246, .3);
}

.hero h1 {
  font-size: 46px;
  line-height: 1.25;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: .5px;
  max-width: 720px;
}
.hero h1 em { font-style: normal; color: var(--primary); }
.hero p.sub {
  margin-top: 20px;
  font-size: 17px;
  color: var(--text-regular);
  max-width: 620px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 42px; }
.hero-actions .btn { height: 50px; padding: 0 32px; font-size: 16px; }

/* ---------------- Section common ---------------- */
.section { padding: 90px 0; }
.section.white { background: #fff; }
.section.tint { background: var(--bg-soft); }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 54px; }
.section-head h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: .5px;
}
.section-head p {
  margin-top: 16px;
  font-size: 16px;
  color: var(--text-regular);
}

/* ---------------- Model cards ---------------- */
.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}
.model-card {
  --accent: #247dff;
  --accent-rgb: 36, 125, 255;
  --accent-soft: #e8f1ff;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 264px;
  padding: 44px 42px 40px;
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(158deg, #ffffff 0%, var(--accent-soft) 118%);
  border: 1px solid rgba(255, 255, 255, .75);
  box-shadow: 0 1px 2px rgba(23, 43, 77, .04), 0 14px 34px -16px rgba(36, 90, 180, .18);
  transition: transform .45s cubic-bezier(.22, 1, .36, 1), box-shadow .45s ease;
}
.model-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 2px 6px rgba(23, 43, 77, .05), 0 30px 52px -20px rgba(36, 90, 180, .3);
}
.model-card .mc-glow {
  position: absolute;
  right: -80px; top: -90px;
  width: 260px; height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--accent-rgb), .16), rgba(var(--accent-rgb), 0) 68%);
  pointer-events: none;
  transition: transform .6s cubic-bezier(.22, 1, .36, 1);
}
.model-card:hover .mc-glow { transform: scale(1.12) translate(-6px, 8px); }
.model-card .mc-body {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.model-card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .2px;
  color: var(--heading);
}
.model-card h3::before {
  content: "";
  flex: none;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(var(--accent-rgb), .14);
}
.model-card .tags { display: flex; flex-wrap: wrap; gap: 9px; margin: 18px 0 28px; }
.model-card .tags span {
  padding: 6px 15px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--accent);
  background: rgba(var(--accent-rgb), .1);
  border: 1px solid rgba(var(--accent-rgb), .16);
  transition: background .3s, border-color .3s;
}
.model-card:hover .tags span { background: rgba(var(--accent-rgb), .16); border-color: rgba(var(--accent-rgb), .24); }
.model-card p { font-size: 14.5px; color: #5a6b85; line-height: 1.8; max-width: 92%; }
.model-card .mc-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  align-self: flex-start;
  height: 42px;
  padding: 0 24px;
  border-radius: 12px;
  color: #fff;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .2px;
  background: var(--accent);
  box-shadow: 0 10px 22px -8px rgba(var(--accent-rgb), .7);
  transition: transform .3s cubic-bezier(.22, 1, .36, 1), box-shadow .3s;
}
.model-card .mc-btn svg { width: 15px; height: 15px; transition: transform .3s; }
.model-card .mc-btn:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 16px 30px -10px rgba(var(--accent-rgb), .82);
}
.model-card .mc-btn:hover svg { transform: translateX(4px); }

/* 强调色：三个模型卡片统一以「图片大模型」为准 */
.mc-lang  { --accent: #4f7bf7; --accent-rgb: 79, 123, 247; --accent-soft: #e9eeff; }
.mc-video { --accent: #4f7bf7; --accent-rgb: 79, 123, 247; --accent-soft: #e9eeff; }
.mc-image { --accent: #4f7bf7; --accent-rgb: 79, 123, 247; --accent-soft: #e9eeff; }
.mc-voice { --accent: #24b6d6; --accent-rgb: 36, 182, 214; --accent-soft: #e3f7fc; }

/* ---------------- Pricing ---------------- */
.pricing-wrap { display: grid; grid-template-columns: 1.55fr 1fr; gap: 34px; align-items: stretch; margin-top: 40px; }

.price-table {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.price-table table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.price-table thead th {
  background: #6576e8;
  color: #fff;
  font-weight: 500;
  text-align: left;
  padding: 18px 20px;
  font-size: 15px;
  white-space: nowrap;
}
.price-table thead th:first-child { border-top-left-radius: var(--radius); }
.price-table thead th:last-child  { border-top-right-radius: var(--radius); }
.price-table tbody td { padding: 17px 20px; color: var(--text-regular); border-bottom: 1px solid #eef2fa; }
.price-table tbody tr:nth-child(odd) { background: #f4f7ff; }
.price-table tbody tr:hover { background: var(--primary-light-9); }
.price-table tbody td:first-child { color: var(--heading); font-weight: 500; }
.price-table .model-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.price-table .tag {
  display: inline-flex;
  align-items: center;
  flex: none;
  padding: 2px 9px;
  border-radius: 10px;
  font-size: 11px;
  line-height: 1.5;
  background: var(--primary-light-8);
  color: var(--primary);
}
.price-table .price-note {
  padding: 12px 20px 16px;
  font-size: 12.5px;
  color: var(--text-secondary);
}

.price-cta {
  position: relative;
  border-radius: 22px;
  padding: 46px 40px;
  background: linear-gradient(158deg, #ffffff 0%, #e7f0ff 118%);
  border: 1px solid rgba(255, 255, 255, .75);
  box-shadow: 0 1px 2px rgba(23, 43, 77, .04), 0 14px 34px -16px rgba(36, 90, 180, .18);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.price-cta .mc-glow {
  position: absolute; right: -70px; top: -80px;
  width: 240px; height: 240px; border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--primary-rgb), .18), rgba(var(--primary-rgb), 0) 68%);
}
.price-cta h3 { position: relative; font-size: 23px; color: var(--heading); font-weight: 700; letter-spacing: .2px; }
.price-cta p { position: relative; margin: 16px 0 30px; font-size: 14.5px; color: #5a6b85; line-height: 1.85; }
.price-cta .btn {
  position: relative;
  align-self: flex-start;
  border-radius: 12px;
  box-shadow: 0 10px 22px -8px rgba(var(--primary-rgb), .7);
}
.price-cta .btn:hover { transform: translateY(-2px); }

/* ---------------- Use cases (tabs) ---------------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 44px;
}
.tab {
  padding: 12px 26px;
  border-radius: 30px;
  font-size: 15px;
  color: var(--text-regular);
  background: #eef3fb;
  transition: all .3s;
}
.tab:hover { color: var(--primary); }
.tab.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 8px 20px rgba(var(--primary-rgb), .3);
}

.tab-panels { position: relative; }
.panel { display: none; animation: fade .4s ease; }
.panel.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.panel-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 44px;
  align-items: center;
  background: linear-gradient(90deg, #eaf1fd, #e7eeff);
  border-radius: var(--radius-lg);
  padding: 48px 50px;
}
.panel-inner h3 { font-size: 24px; color: var(--heading); font-weight: 700; }
.panel-inner p { margin-top: 16px; font-size: 15px; color: #4a5a75; line-height: 1.85; }
.panel-inner .panel-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.panel-inner .panel-tags span {
  padding: 5px 14px; border-radius: 15px; font-size: 12.5px;
  background: rgba(var(--primary-rgb), .1); color: var(--primary);
}
.panel-inner .panel-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  aspect-ratio: 16 / 9;
}
.panel-inner .panel-img picture { display: block; width: 100%; height: 100%; }
.panel-inner .panel-img img { width: 100%; height: 100%; object-fit: cover; }

/* ---------------- Network stats ---------------- */
.network {
  position: relative;
  background: url("../img/global.e479ec57.jpg") center / cover no-repeat, #fff;
  background-image: image-set(url("../img/global.b3b12233.webp") type("image/webp"), url("../img/global.e479ec57.jpg") type("image/jpeg"));
}
.network::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.92), rgba(244,247,252,.86));
}
.network .container { position: relative; z-index: 1; }
.stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 50px;
}
.stat { text-align: center; }
.stat .num {
  font-size: 44px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
}
.stat .num i { font-size: 26px; font-style: normal; color: var(--primary-light-3); }
.stat .label { margin-top: 8px; font-size: 14px; color: var(--text-regular); }

/* ---------------- Sub-footer CTA ---------------- */
.sub-footer {
  position: relative;
  background: linear-gradient(120deg, #0b3fa8, #247dff 55%, #5aa2ff);
  overflow: hidden;
  text-align: center;
}
.sub-footer::after {
  content: "";
  position: absolute; inset: 0;
  background: url("../img/hero10.7f7014f3.jpg") center / cover no-repeat;
  opacity: .18;
  mix-blend-mode: screen;
}
.sub-footer .container { position: relative; z-index: 1; padding: 74px 40px; }
.sub-footer h2 { font-size: 34px; color: #fff; font-weight: 700; letter-spacing: .5px; }
.sub-footer p { margin-top: 14px; font-size: 16px; color: rgba(255,255,255,.85); }
.sub-footer .btn { margin-top: 30px; background: #fff; color: var(--primary); }
.sub-footer .btn:hover { background: #f0f6ff; color: var(--primary-dark); }

/* ---------------- Footer ---------------- */
.site-footer { background: #fff; padding: 66px 0 40px; border-top: 1px solid #eef3fb; }
.footer-top { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; }
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p { color: #677083; font-size: 13.5px; line-height: 2; }
.footer-brand .icp { color: #677083; }
.footer-brand .icp:hover { color: var(--primary); }

.footer-col h4 { font-size: 15px; color: #2c3d5c; margin-bottom: 18px; font-weight: 600; }
.footer-col li { margin-bottom: 12px; }
.footer-col a { color: #677083; font-size: 13.5px; }
.footer-col a:hover { color: var(--primary); }

.footer-bottom {
  margin-top: 50px;
  padding-top: 26px;
  border-top: 1px solid #eef3fb;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: #9099a8;
}

/* ---------------- About page ---------------- */
.about-hero {
  position: relative;
  background: linear-gradient(120deg, #0b3fa8, #247dff 60%, #5aa2ff);
  overflow: hidden;
  text-align: center;
}
.about-hero::after {
  content: ""; position: absolute; inset: 0;
  background: url("../img/global.e479ec57.jpg") center / cover no-repeat;
  background-image: image-set(url("../img/global.b3b12233.webp") type("image/webp"), url("../img/global.e479ec57.jpg") type("image/jpeg"));
  opacity: .16; mix-blend-mode: screen;
}
.about-hero .container { position: relative; z-index: 1; padding: 92px 40px 86px; }
.about-hero h1 { font-size: 42px; color: #fff; font-weight: 700; }
.about-hero p { margin-top: 18px; font-size: 17px; color: rgba(255,255,255,.88); max-width: 760px; margin-left: auto; margin-right: auto; }

.about-intro { display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: center; }
.about-intro h2 { font-size: 32px; color: var(--heading); font-weight: 700; }
.about-intro p { margin-top: 18px; font-size: 15.5px; color: var(--text-regular); line-height: 1.95; }
.about-intro .about-img { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-card); }
.about-intro .about-img picture { display: block; }
.about-intro .about-img img { width: 100%; }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.value-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-card);
  transition: transform .35s, box-shadow .35s;
}
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.value-card .vi {
  width: 52px; height: 52px; border-radius: 14px;
  display: grid; place-items: center;
  background: var(--primary-light-9); color: var(--primary);
  margin-bottom: 20px;
}
.value-card .vi svg { width: 26px; height: 26px; }
.value-card h3 { font-size: 19px; color: var(--heading); font-weight: 600; }
.value-card p { margin-top: 12px; font-size: 14px; color: var(--text-regular); line-height: 1.8; }

.biz-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.biz-card {
  background: linear-gradient(160deg, #eaf1fd, #f6f9ff);
  border-radius: var(--radius);
  padding: 34px 34px;
  border: 1px solid #e4edfb;
}
.biz-card h3 { font-size: 19px; color: var(--heading); font-weight: 600; }
.biz-card .tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 16px; }
.biz-card .tags span { padding: 4px 12px; border-radius: 12px; font-size: 12px; background: rgba(var(--primary-rgb), .1); color: var(--primary); }
.biz-card p { font-size: 14px; color: var(--text-regular); line-height: 1.85; }

.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.contact-card {
  background: #fff; border-radius: var(--radius); padding: 34px 32px;
  box-shadow: var(--shadow-card); text-align: center;
}
.contact-card .vi { width: 54px; height: 54px; margin: 0 auto 16px; border-radius: 50%; display: grid; place-items: center; background: var(--primary-light-9); color: var(--primary); }
.contact-card .vi svg { width: 26px; height: 26px; }
.contact-card h3 { font-size: 16px; color: var(--heading); font-weight: 600; }
.contact-card p { margin-top: 8px; font-size: 14px; color: var(--text-regular); }

/* ---------------- Company intro ---------------- */
.intro-grid { display: grid; grid-template-columns: 1.18fr .82fr; gap: 54px; align-items: center; }
.intro-text p { margin-top: 16px; font-size: 15.5px; color: var(--text-regular); line-height: 1.95; }
.intro-text p:first-child { margin-top: 0; }
.intro-highlights { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.hl-card { background: #fff; border-radius: var(--radius); padding: 26px 24px; box-shadow: var(--shadow-card); }
.hl-card .num { font-size: 30px; font-weight: 700; color: var(--primary); line-height: 1.15; }
.hl-card .num i { font-size: 18px; font-style: normal; color: var(--primary-light-3); }
.hl-card .label { margin-top: 8px; font-size: 13.5px; color: var(--text-regular); }

/* ---------------- Product list ---------------- */
.product-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; align-items: start; }
.product-card {
  background: linear-gradient(160deg, #eaf1fd, #f6f9ff);
  border: 1px solid #e4edfb;
  border-radius: var(--radius);
  padding: 34px 34px 26px;
}
.product-card h3 { font-size: 20px; color: var(--heading); font-weight: 600; display: flex; align-items: center; gap: 10px; }
.product-card h3 .pc-badge { font-size: 12px; font-weight: 500; color: #fff; background: var(--primary); border-radius: 12px; padding: 2px 10px; }
.product-list { margin-top: 18px; }
.product-list li { position: relative; padding-left: 18px; margin-bottom: 15px; }
.product-list li::before { content: ""; position: absolute; left: 0; top: 8px; width: 7px; height: 7px; border-radius: 50%; background: var(--primary); }
.product-list strong { display: block; color: var(--heading); font-weight: 600; font-size: 14.5px; }
.product-list span { display: block; color: var(--text-regular); font-size: 13.5px; line-height: 1.8; margin-top: 3px; }

/* ---------------- Resource nodes ---------------- */
.node-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-top: 46px; }
.node-card {
  background: rgba(255, 255, 255, .88);
  border: 1px solid #e4edfb;
  border-radius: var(--radius);
  padding: 26px 18px;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform .35s, box-shadow .35s;
}
.node-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.node-card .nc-dot { width: 44px; height: 44px; margin: 0 auto 14px; border-radius: 50%; display: grid; place-items: center; background: var(--primary-light-9); color: var(--primary); }
.node-card .nc-dot svg { width: 22px; height: 22px; }
.node-card h3 { font-size: 15px; color: var(--heading); font-weight: 600; }
.node-card p { margin-top: 6px; font-size: 12.5px; color: var(--text-secondary); }

/* ---------------- Contact 4 columns ---------------- */
.contact-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.contact-card .cc-sub { margin-top: 6px; font-size: 12.5px; color: var(--text-secondary); }

/* ---------------- Reveal animation ----------------
   仅在 JS 可用时（html.js）才隐藏内容，避免 JS 加载失败时整页内容丢失 */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------------- Responsive ---------------- */
@media (max-width: 1450px) {
  .container { max-width: 1240px; }
}
@media (max-width: 1280px) {
  .container { padding: 0 28px; }
  .hero h1 { font-size: 40px; }
  .pricing-wrap { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
}

@media (max-width: 992px) {
  .nav-toggle { display: grid; }
  .nav-menu {
    position: fixed;
    top: 64px; left: 0; right: 0;
    height: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    box-shadow: var(--shadow-nav);
    padding: 10px 0 20px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all .28s;
  }
  .nav-menu.open { transform: none; opacity: 1; visibility: visible; }
  .nav-menu > li { height: auto; }
  .nav-menu a { height: auto; padding: 14px 28px; }
  .nav-menu a::after { display: none; }
  .header-actions .btn-ghost { display: none; }

  .model-grid { grid-template-columns: repeat(2, 1fr); }
  .panel-inner { grid-template-columns: 1fr; gap: 28px; padding: 34px 28px; }
  .panel-inner .panel-img { order: -1; }
  .about-intro { grid-template-columns: 1fr; gap: 30px; }
  .intro-grid { grid-template-columns: 1fr; gap: 30px; }
  .product-grid { grid-template-columns: 1fr; }
  .node-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid, .contact-grid, .biz-grid { grid-template-columns: 1fr; }
  .contact-grid.cols-4 { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 26px; }
  .hero .container { padding: 84px 18px 90px; }
  .hero h1 { font-size: 30px; }
  .hero p.sub { font-size: 15px; }
  .hero-actions .btn { height: 46px; padding: 0 22px; font-size: 15px; }
  .model-card { padding: 30px 26px; }
  .model-grid { grid-template-columns: 1fr; }
  .price-table { overflow-x: auto; }
  .price-table table { min-width: 560px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat .num { font-size: 34px; }
  .intro-highlights { grid-template-columns: 1fr 1fr; }
  .node-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid.cols-4 { grid-template-columns: 1fr; }
  .sub-footer h2 { font-size: 24px; }
  .about-hero h1 { font-size: 30px; }
  .footer-top { grid-template-columns: 1fr; }
}