/* ============================================================
   庆峰医疗（广州）技术有限公司 · 宣传官网
   设计方向：数字医疗 · 数据大屏（医疗科技蓝）
   母题：ECG 心电脉冲 / 数据网格 / 医疗卡片
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* 品牌色 · 医疗科技蓝 */
  --navy-950: #060D20;
  --navy-900: #08122B;
  --navy-800: #0A1E3C;
  --navy-700: #10305F;
  --blue-700: #0A3D86;
  --blue-600: #0B4EA2;
  --blue-500: #1667C4;
  --cyan-400: #2FE0F2;
  --cyan-500: #06B6D4;
  --cyan-600: #0E7490;

  /* 中性色 */
  --white: #FFFFFF;
  --light-bg: #F4F8FE;
  --light-bg-2: #EAF1FB;
  --ink: #17233B;
  --ink-2: #33425C;
  --muted: #5C6C86;
  --line: #DFE9F6;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(10, 30, 60, .06), 0 4px 12px rgba(10, 30, 60, .06);
  --shadow-md: 0 4px 12px rgba(10, 30, 60, .08), 0 12px 32px rgba(10, 30, 60, .10);
  --shadow-lg: 0 12px 32px rgba(10, 30, 60, .12), 0 32px 64px rgba(10, 30, 60, .16);

  /* 圆角 */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;

  /* 字体 */
  --font-sc: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-num: "Barlow", "Noto Sans SC", -apple-system, sans-serif;

  /* 布局 */
  --container: 1180px;
  --header-h: 72px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-sc);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: var(--blue-600); text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; color: var(--ink); }

::selection { background: rgba(6, 182, 212, .22); }

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

.section { padding: 96px 0; position: relative; }
.section--tight { padding: 72px 0; }
.section--dark { background: var(--navy-900); color: #C9D6EE; }
.section--tint { background: var(--light-bg); }

.section-head { max-width: 760px; margin-bottom: 56px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { color: var(--muted); margin-top: 14px; font-size: 16px; }
.section--dark .section-head h2 { color: #fff; }
.section--dark .section-head p { color: #93A6C4; }

.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: .14em;
  color: var(--cyan-600); text-transform: uppercase;
  margin-bottom: 14px;
}
.kicker::before {
  content: ""; width: 22px; height: 2px;
  background: linear-gradient(90deg, var(--cyan-500), var(--cyan-400));
  border-radius: 2px;
}
.section--dark .kicker { color: var(--cyan-400); }

.section-head h2 { font-size: 38px; letter-spacing: .01em; }

.eyebrow-num {
  font-family: var(--font-num);
  color: var(--cyan-500);
  font-weight: 600;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-sc);
  font-size: 15px; font-weight: 600;
  padding: 12px 26px; border-radius: 10px;
  border: 1px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-600));
  color: #fff;
  box-shadow: 0 8px 20px rgba(11, 78, 162, .30);
}
.btn-primary:hover { box-shadow: 0 12px 28px rgba(11, 78, 162, .42); }

.btn-ghost { background: rgba(255, 255, 255, .10); color: #fff; border-color: rgba(255, 255, 255, .35); }
.btn-ghost:hover { background: rgba(255, 255, 255, .18); }

.btn-outline { background: transparent; color: var(--blue-600); border-color: var(--blue-600); }
.btn-outline:hover { background: rgba(11, 78, 162, .06); }

.btn-sm { padding: 9px 18px; font-size: 14px; border-radius: 8px; }

.btn .arr { transition: transform .2s ease; }
.btn:hover .arr { transform: translateX(4px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--blue-600), var(--cyan-600));
  color: #fff; font-size: 22px; font-weight: 800;
  box-shadow: 0 6px 16px rgba(11, 78, 162, .35);
  font-family: var(--font-sc);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 17px; color: var(--navy-800); letter-spacing: .02em; }
.brand-text small { font-size: 11px; color: var(--muted); letter-spacing: .06em; }

.brand-logo { background: transparent; box-shadow: none; width: auto; padding: 0; border-radius: 0; }
.brand-logo img { height: 42px; width: auto; display: block; }
/* 白底导航栏用：白色 logo 反转为深色 */
.brand-logo--dark img { filter: invert(1); }
/* 深色底（页脚/深色版块）用：白色 logo 原样 */
.brand-logo--light img { filter: none; }

@media (max-width: 480px) {
  .brand-logo img { height: 36px; }
  .brand-text small { display: none; }
}

.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav > a:not(.btn) {
  font-size: 15px; color: var(--ink-2); font-weight: 500;
  padding: 8px 14px; border-radius: 8px;
  transition: color .15s ease, background .15s ease;
  position: relative;
}
.site-nav > a:not(.btn):hover { color: var(--blue-600); background: var(--light-bg-2); }
.site-nav > a:not(.btn).active { color: var(--blue-600); }
.site-nav > a:not(.btn).active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px;
  height: 3px; border-radius: 3px;
  background: linear-gradient(90deg, var(--cyan-500), var(--cyan-400));
}
.nav-cta { margin-left: 12px; }

.nav-toggle {
  display: none; background: none; border: 0; width: 44px; height: 44px;
  border-radius: 10px; align-items: center; justify-content: center;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--navy-800); border-radius: 2px; position: relative; transition: .25s ease; }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px;
  background: var(--navy-800); border-radius: 2px; transition: .25s ease;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.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); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color: #93A6C4; }
.footer-top { padding: 64px 0 40px; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; }
.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.8; max-width: 340px; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; letter-spacing: .04em; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: #93A6C4; font-size: 14px; transition: color .15s ease; }
.footer-col a:hover { color: var(--cyan-400); }
.footer-contact li { font-size: 14px; margin-bottom: 12px; display: flex; gap: 10px; align-items: flex-start; }
.footer-contact .ic { color: var(--cyan-400); flex-shrink: 0; margin-top: 2px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .10); padding: 20px 0; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 13px; }

/* ---------- Hero (首页) ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 520px at 82% -10%, rgba(22, 103, 196, .55), transparent 60%),
    radial-gradient(900px 520px at -5% 110%, rgba(6, 182, 212, .28), transparent 60%),
    var(--navy-900);
  color: #E6EEFB;
  padding: 96px 0 84px;
  overflow: hidden;
}
.hero::before {  /* 数据网格 */
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120, 165, 230, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 165, 230, .09) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 78%);
  pointer-events: none;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero .hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; letter-spacing: .16em;
  color: var(--cyan-400); margin-bottom: 22px;
}
.hero .hero-badge::before {
  content: ""; width: 22px; height: 2px;
  background: linear-gradient(90deg, var(--cyan-500), var(--cyan-400));
  border-radius: 2px;
}
.hero h1 {
  color: #fff; font-size: 52px; line-height: 1.22; letter-spacing: .01em;
}
.hero h1 .grad {
  background: linear-gradient(92deg, #7DD3FC, #2FE0F2 55%, #6EE7F7);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.h1-line { display: block; }
.h1-line + .h1-line { margin-top: 24px; }
.h1-line em {
  display: inline-flex; align-items: center;
  font-style: normal;
  font-size: 17px; font-weight: 600; letter-spacing: .06em;
  color: var(--cyan-400);
  background: rgba(6, 182, 212, .12);
  border: 1px solid rgba(6, 182, 212, .32);
  padding: 6px 16px; border-radius: 999px;
  margin-bottom: 10px;
}
.h1-line > span { display: block; }
.hero .lead { margin-top: 22px; font-size: 17px; color: #AFC2E2; max-width: 520px; }
.hero-cta { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }

/* 心电图脉冲（Hero 右侧视觉） */
.ecg-panel {
  position: relative;
  background: linear-gradient(160deg, rgba(16, 48, 95, .85), rgba(6, 13, 32, .9));
  border: 1px solid rgba(120, 165, 230, .22);
  border-radius: var(--r-lg);
  padding: 26px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(6px);
}
.ecg-panel .panel-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; }
.ecg-panel .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--cyan-500); box-shadow: 0 0 0 4px rgba(6, 182, 212, .18); }
.ecg-panel .panel-bar b { font-size: 13px; color: #AFC2E2; font-weight: 500; letter-spacing: .04em; }
.ecg-panel .panel-bar .live { margin-left: auto; font-size: 12px; color: var(--cyan-400); display: inline-flex; align-items: center; gap: 6px; }
.ecg-panel .panel-bar .live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan-400); animation: blink 1.4s infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }

.ecg-svg { width: 100%; height: 120px; }
.ecg-svg path.line {
  fill: none; stroke: url(#ecgGrad); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 900; stroke-dashoffset: 900;
  animation: ecg-draw 2.6s ease forwards;
}
@keyframes ecg-draw { to { stroke-dashoffset: 0; } }

.ecg-panel .mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
.ecg-panel .mini { background: rgba(255, 255, 255, .05); border: 1px solid rgba(120, 165, 230, .16); border-radius: 12px; padding: 14px 14px 12px; }
.ecg-panel .mini b { display: block; font-family: var(--font-num); font-size: 22px; color: #fff; font-weight: 700; }
.ecg-panel .mini b em { font-style: normal; color: var(--cyan-400); font-size: 14px; }
.ecg-panel .mini > span { font-size: 12px; color: #8FA4C6; }

.float-chip {
  position: absolute; display: flex; align-items: center; gap: 8px;
  background: rgba(255, 255, 255, .96); color: var(--ink);
  font-size: 12.5px; font-weight: 600;
  border-radius: 10px; padding: 9px 14px;
  box-shadow: var(--shadow-md);
}
.float-chip .ic { color: var(--cyan-600); }
.float-chip.fc-1 { top: 42px; left: -38px; animation: floatY 5s ease-in-out infinite; }
.float-chip.fc-2 { bottom: 64px; right: -30px; animation: floatY 6s ease-in-out 1s infinite; }
@keyframes floatY { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- Page Hero (内页) ---------- */
.page-hero {
  position: relative;
  background:
    radial-gradient(900px 400px at 85% -20%, rgba(22, 103, 196, .5), transparent 60%),
    linear-gradient(135deg, var(--navy-900), var(--navy-800));
  color: #DDE8F8; padding: 68px 0 64px; overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(120, 165, 230, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 165, 230, .08) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at 30% 40%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse at 30% 40%, #000 20%, transparent 75%);
  pointer-events: none;
}
.page-hero .container { position: relative; }
.page-hero .crumbs { font-size: 13px; color: #8FA4C6; margin-bottom: 18px; }
.page-hero .crumbs a { color: #8FA4C6; }
.page-hero .crumbs a:hover { color: var(--cyan-400); }
.page-hero .crumbs .sep { margin: 0 8px; opacity: .6; }
.page-hero h1 { color: #fff; font-size: 42px; }
.page-hero .lead { margin-top: 16px; font-size: 16.5px; color: #AFC2E2; max-width: 720px; }

/* ---------- 产品概览卡 (首页) ---------- */
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  overflow: hidden; box-shadow: var(--shadow-sm); height: 100%;
  display: flex; flex-direction: column;
  transition: transform .22s ease, box-shadow .22s ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

.pc-visual {
  position: relative; overflow: hidden;
  background:
    radial-gradient(340px 170px at 92% -18%, rgba(6, 182, 212, .38), transparent 60%),
    linear-gradient(130deg, var(--blue-700), var(--navy-800));
  color: #fff;
  padding: 22px 30px 26px;
  min-height: 168px;
  display: flex; flex-direction: column; justify-content: flex-end;
}
.pc-visual .pc-num {
  position: absolute; top: 20px; left: 30px;
  font-family: var(--font-num); font-size: 13px; font-weight: 600;
  letter-spacing: .16em; color: rgba(255, 255, 255, .72);
}
.pc-visual .pc-icon {
  position: absolute; top: 14px; right: 22px;
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  color: var(--cyan-400);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(125, 211, 252, .30);
  box-shadow: 0 6px 16px rgba(6, 13, 32, .25);
}
.pc-visual h3 { color: #fff; font-size: 23px; margin: 0 0 6px; }
.pc-visual .pc-sub { font-size: 13px; color: #AFC2E2; margin: 0; }
.pc-motif { position: absolute; right: 6px; bottom: 0; width: 150px; pointer-events: none; opacity: .9; }
.pc-motif--ring { width: 104px; right: 2px; bottom: -6px; }

.pc-body { padding: 24px 30px 30px; display: flex; flex-direction: column; flex: 1; }
.pc-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  margin-bottom: 18px;
}
.pc-stat {
  background: var(--light-bg); border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 8px; text-align: center;
}
.pc-stat b { display: block; font-family: var(--font-num); font-size: 19px; font-weight: 700; color: var(--blue-600); line-height: 1.2; }
.pc-stat span { display: block; margin-top: 4px; font-size: 11.5px; color: var(--muted); }
.pc-desc { font-size: 14px; color: var(--ink-2); line-height: 1.75; }
.pc-points { margin: 14px 0 20px; }
.pc-points li { display: flex; gap: 10px; font-size: 14px; color: var(--ink-2); padding: 7px 0; border-top: 1px dashed var(--line); align-items: baseline; }
.pc-points li:first-child { border-top: 0; }
.pc-points .tick { color: var(--cyan-600); flex-shrink: 0; }
.pc-link { margin-top: auto; font-weight: 600; font-size: 14.5px; color: var(--blue-600); display: inline-flex; align-items: center; gap: 6px; }
.pc-link .arr { transition: transform .2s ease; }
.product-card:hover .pc-link .arr { transform: translateX(4px); }

/* ---------- Feature / 能力卡 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-grid--4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.product-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
.feature-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 28px; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(6, 182, 212, .4); }
.feature-card .f-ic {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(11, 78, 162, .10), rgba(6, 182, 212, .14));
  color: var(--blue-600); margin-bottom: 18px;
}
.feature-card h3 { font-size: 19px; margin-bottom: 10px; }
.feature-card p { font-size: 14.5px; color: var(--muted); }

/* ---------- 统计大数字 ---------- */
.stat-band { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(120, 165, 230, .18);
  border-radius: var(--r-md);
  padding: 30px 26px;
  text-align: center;
  transition: transform .2s ease, border-color .2s ease;
}
.stat-card:hover { transform: translateY(-4px); border-color: rgba(6, 182, 212, .5); }
.stat-card b {
  font-family: var(--font-num); font-size: 46px; font-weight: 700; color: #fff; line-height: 1.1;
  display: block;
}
.stat-card b em { font-style: normal; color: var(--cyan-400); font-size: 30px; }
.stat-card > span { display: block; margin-top: 8px; font-size: 14px; color: #8FA4C6; }
.stat-card--light { background: #fff; border-color: var(--line); box-shadow: var(--shadow-sm); }
.stat-card--light b { color: var(--navy-800); }
.stat-card--light b em { color: var(--cyan-600); }
.stat-card--light > span { color: var(--muted); }

/* ---------- 时间轴 ---------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 10px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, var(--cyan-500), var(--blue-600), rgba(11, 78, 162, .12));
  border-radius: 2px;
}
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 6px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; border: 3px solid var(--cyan-500);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, .16);
}
.tl-item .tl-date { font-family: var(--font-num); font-size: 14px; font-weight: 700; color: var(--cyan-600); letter-spacing: .04em; }
.tl-item h4 { font-size: 17px; margin: 4px 0 6px; }
.tl-item p { font-size: 14.5px; color: var(--muted); max-width: 620px; }

/* ---------- 流程步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-md);
  padding: 24px; position: relative; counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-num); font-size: 30px; font-weight: 700;
  color: rgba(11, 78, 162, .16); position: absolute; top: 14px; right: 18px;
}
.step .s-ic { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--light-bg-2); color: var(--blue-600); margin-bottom: 16px; }
.step h4 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--muted); }

/* ---------- 流程链条（采购全生命周期） ---------- */
.flow-chain { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.flow-node {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 12px; text-align: center; position: relative;
}
.flow-node .fn-ic { color: var(--blue-600); display: grid; place-items: center; margin-bottom: 10px; }
.flow-node b { display: block; font-size: 14px; color: var(--ink); }
.flow-node span { font-size: 12px; color: var(--muted); display: block; margin-top: 2px; }
.flow-node .fn-arrow { position: absolute; right: -10px; top: 50%; transform: translateY(-50%); color: var(--cyan-500); z-index: 2; }

/* ---------- 对照表 ---------- */
.compare-table { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--r-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.compare-table thead th {
  background: var(--navy-800); color: #fff; font-size: 14.5px; font-weight: 600;
  padding: 16px 20px; text-align: left;
}
.compare-table tbody td { padding: 16px 20px; font-size: 14.5px; color: var(--ink-2); border-top: 1px solid var(--line); vertical-align: top; }
.compare-table tbody tr:nth-child(even) { background: var(--light-bg); }
.compare-table tbody td:first-child { font-weight: 600; color: var(--navy-800); }
.compare-table tbody td:last-child { color: var(--blue-600); }

/* ---------- 模块环形（采购全生命周期 · 闭环） ---------- */
.ring-modules {
  position: relative;
  width: 720px;
  height: 720px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}
.ring-track,
.ring-track--outer,
.ring-arrow {
  position: absolute;
  left: 50%;
  top: 50%;
  pointer-events: none;
}
.ring-track { width: 644px; height: 644px; margin: -322px 0 0 -322px; border-radius: 50%; border: 2px dashed rgba(6, 182, 212, .5); }
.ring-track--outer { width: 688px; height: 688px; margin: -344px 0 0 -344px; border-radius: 50%; border: 1px solid rgba(11, 78, 162, .14); }
.ring-arrow {
  width: 30px; height: 30px; margin: -15px 0 0 -15px;
  transform: translateY(-205px);
  border-radius: 50%;
  background: var(--blue-600); color: #fff;
  display: grid; place-items: center;
  box-shadow: 0 6px 16px rgba(11, 78, 162, .35);
  z-index: 2;
}
.ring-arrow svg { width: 14px; height: 14px; }
.ring-center {
  position: absolute; left: 50%; top: 50%;
  width: 220px; height: 220px; margin: -110px 0 0 -110px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 25%, #1667C4, var(--blue-600) 55%, var(--navy-800));
  color: #fff; text-align: center; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  box-shadow: 0 20px 50px rgba(10, 62, 134, .35);
}
.ring-center::before {
  content: ""; position: absolute; inset: 6px; border-radius: 50%;
  border: 1px solid rgba(47, 224, 242, .45);
}
.ring-center-en { font-family: var(--font-num); font-size: 10px; letter-spacing: .22em; text-transform: uppercase; color: var(--cyan-400); margin-bottom: 8px; }
.ring-center strong { font-size: 21px; letter-spacing: .05em; }
.ring-center-sub { margin-top: 8px; font-size: 12px; color: rgba(255, 255, 255, .85); }
.ring-node {
  position: absolute; left: 50%; top: 50%;
  width: 130px; height: 40px; margin: -20px 0 0 -65px;
  transform: rotate(var(--a)) translateX(322px) rotate(calc(0deg - var(--a)));
  display: flex; align-items: center; justify-content: center; gap: 5px;
  background: #fff; border: 1px solid var(--line); border-radius: 20px;
  box-shadow: 0 6px 16px rgba(10, 30, 60, .08);
  font-size: 14px; font-weight: 600; color: var(--ink);
  white-space: nowrap;
  transition: border-color .18s ease, color .18s ease, box-shadow .18s ease;
}
.ring-node::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan-500); flex: none; }
.ring-node:hover { border-color: var(--cyan-500); color: var(--blue-600); box-shadow: var(--shadow-sm); }

/* 窄屏：环形退化为标签组，避免溢出 */
@media (max-width: 768px) {
  .ring-modules {
    display: flex; flex-wrap: wrap; justify-content: center;
    gap: 10px; width: 100%; height: auto;
  }
  .ring-track, .ring-track--outer, .ring-arrow, .ring-center { display: none; }
  .ring-node {
    position: static; transform: none; margin: 0;
    width: auto; height: auto; padding: 7px 13px; border-radius: 16px;
    font-size: 14px;
  }
}

/* ---------- AI 亮点 ---------- */
.ai-row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.ai-row + .ai-row { margin-top: 72px; }
.ai-row .ai-copy h3 { font-size: 27px; margin-bottom: 16px; }
.ai-row .ai-copy p { color: var(--muted); font-size: 15.5px; margin-bottom: 20px; }
.ai-list li { display: flex; gap: 12px; align-items: flex-start; padding: 8px 0; font-size: 15px; color: var(--ink-2); }
/* 深色板块内的正文/列表提亮，保证对比度 */
.section--dark .ai-copy p { color: #AFC2E2; }
.section--dark .ai-list li { color: #C9D6EE; }
.ai-list li .ic { color: var(--cyan-600); margin-top: 3px; flex-shrink: 0; }
.compare-pill {
  display: inline-flex; align-items: center; gap: 12px;
  background: var(--light-bg-2); border: 1px solid var(--line); border-radius: 12px;
  padding: 10px 16px; font-size: 14px; color: var(--ink-2); margin-top: 6px;
}
.compare-pill b { font-family: var(--font-num); font-size: 17px; }
.compare-pill .from { color: var(--muted); text-decoration: line-through; }
.compare-pill .to { color: var(--cyan-600); }
.compare-pill .arrow { color: var(--blue-600); font-weight: 700; }

/* ---------- 对接集成 ---------- */
.integrations { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.integration {
  background: #fff; border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 30px; display: flex; align-items: center; gap: 12px;
  font-weight: 600; font-size: 16px; color: var(--ink); box-shadow: var(--shadow-sm);
  transition: transform .2s ease, border-color .2s ease;
}
.integration:hover { transform: translateY(-3px); border-color: var(--cyan-500); }
.integration .ic { color: var(--blue-600); }

/* ---------- 表单 ---------- */
.contact-form { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field.full { grid-column: 1 / -1; }
.form-field label { font-size: 14px; font-weight: 600; color: var(--ink-2); }
.form-field input, .form-field textarea, .form-field select {
  font-family: var(--font-sc); font-size: 15px; color: var(--ink);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
  background: var(--light-bg); transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
  width: 100%;
}
.form-field input:focus, .form-field textarea:focus {
  outline: none; border-color: var(--cyan-500); background: #fff;
  box-shadow: 0 0 0 3px rgba(6, 182, 212, .14);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 12px; }

/* ---------- 联系方式卡片 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); padding: 30px; text-align: center; transition: transform .2s ease, box-shadow .2s ease; }
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.contact-card .c-ic { width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 16px; display: grid; place-items: center; background: linear-gradient(135deg, rgba(11,78,162,.10), rgba(6,182,212,.14)); color: var(--blue-600); }
.contact-card h3 { font-size: 16px; margin-bottom: 8px; }
.contact-card p { font-size: 14.5px; color: var(--muted); }
.contact-card .val { font-size: 17px; color: var(--navy-800); font-weight: 700; margin-top: 6px; font-family: var(--font-num); }

/* ---------- CTA 条 ---------- */
.cta-band {
  position: relative; border-radius: var(--r-lg); overflow: hidden;
  background:
    radial-gradient(700px 300px at 90% -20%, rgba(6, 182, 212, .35), transparent 60%),
    linear-gradient(120deg, var(--blue-700), var(--blue-600));
  padding: 56px 48px; color: #fff; text-align: center;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 40px 40px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 20%, transparent 80%);
  mask-image: radial-gradient(ellipse at center, #000 20%, transparent 80%);
}
.cta-band .container { position: relative; }
.cta-band h2 { color: #fff; font-size: 32px; margin-bottom: 14px; }
.cta-band p { color: #D6E6FF; max-width: 560px; margin: 0 auto 30px; }
.cta-band .btn { position: relative; }

/* ---------- 通用面板 ---------- */
.panel { background: #fff; border: 1px solid var(--line); border-radius: var(--r-md); padding: 28px; box-shadow: var(--shadow-sm); }

/* ---------- 徽标标签 ---------- */
.badge-list { display: flex; flex-wrap: wrap; gap: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  padding: 12px 18px; font-size: 14px; color: var(--ink-2); font-weight: 500;
  box-shadow: var(--shadow-sm);
}
.badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan-500); }

/* ---------- 滚动出现动画 ---------- */
/* 仅在 JS 可用（html 加 .js 类）时才隐藏内容，避免无 JS / 动画未触发时整块空白 */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .3, 1); }
.js .reveal.in { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .ecg-svg path.line { animation: none; stroke-dashoffset: 0; }
  .float-chip { animation: none !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero h1 { font-size: 42px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .flow-chain { grid-template-columns: repeat(3, 1fr); row-gap: 28px; }
  .flow-node .fn-arrow { display: none; }
  .ai-row { grid-template-columns: 1fr; gap: 40px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 30px; }
  .hero { padding: 64px 0 56px; }
  .hero h1 { font-size: 34px; }
  .ecg-panel { padding: 20px; }
  .float-chip.fc-1 { left: 8px; top: 20px; }
  .float-chip.fc-2 { right: 8px; bottom: 16px; }

  .site-nav {
    position: fixed; inset: var(--header-h) 0 auto 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 16px 24px 24px; gap: 4px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform .25s ease, opacity .2s ease;
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
  }
  .site-nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .site-nav > a { padding: 12px 10px; font-size: 16px; }
  .site-nav > a:not(.btn).active::after { display: none; }
  .nav-cta { margin: 10px 0 0; justify-content: center; }
  .nav-toggle { display: flex; }

  .feature-grid { grid-template-columns: 1fr; }
  .product-grid { max-width: 880px; margin: 0 auto; }
  .stat-band { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .flow-chain { grid-template-columns: repeat(2, 1fr); }
  .ai-row + .ai-row { margin-top: 56px; }
  .form-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .cta-band { padding: 44px 24px; }
  .cta-band h2 { font-size: 26px; }
  .page-hero h1 { font-size: 32px; }
  .compare-table { font-size: 13px; }
  .compare-table thead th, .compare-table tbody td { padding: 12px 14px; }
}

/* 项目纪实 · 视频展示 */
.video-shell {
  background: linear-gradient(160deg, rgba(16, 48, 95, .85), rgba(6, 13, 32, .9));
  border: 1px solid rgba(120, 165, 230, .22);
  border-radius: var(--r-lg);
  padding: 26px;
  box-shadow: var(--shadow-lg);
  max-width: 980px;
  margin: 0 auto;
}
.video-shell .panel-bar { display: flex; align-items: center; gap: 8px; margin-bottom: 18px; }
.video-shell .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--cyan-500); box-shadow: 0 0 0 4px rgba(6, 182, 212, .18); }
.video-shell .panel-bar b { font-size: 13px; color: #AFC2E2; font-weight: 500; letter-spacing: .04em; }
.video-shell video { display: block; width: 100%; aspect-ratio: 16 / 9; border-radius: 12px; background: #000; }

@media (max-width: 480px) {
  .stat-band { grid-template-columns: 1fr; }
  .stat-card b { font-size: 40px; }
}