/* ============================================================
   Keen2 湖北珂蒽网络科技有限公司官网 - 原创视觉框架
   基调：明亮轻快现代风（白底 / 蓝绿渐变 / 圆角卡片 / 柔和阴影）
   本文件为原创设计，不套用任何第三方模板。
   ============================================================ */

:root {
  --c-teal: #2EC4B6;
  --c-blue: #4A90D9;
  --c-grad: linear-gradient(135deg, #2EC4B6 0%, #4A90D9 100%);
  --c-grad-soft: linear-gradient(135deg, rgba(46,196,182,.12) 0%, rgba(74,144,217,.12) 100%);
  --c-bg: #F6FAFB;
  --c-card: #FFFFFF;
  --c-ink: #22303C;
  --c-body: #4A5A6A;
  --c-muted: #8A9AA8;
  --c-line: #E4EDF2;
  --c-white: #FFFFFF;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 4px 14px rgba(34,48,60,.06);
  --shadow-md: 0 10px 30px rgba(46,120,180,.10);
  --shadow-lg: 0 18px 48px rgba(46,120,180,.16);
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --maxw: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--c-body);
  background: var(--c-bg);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color .25s ease; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { color: var(--c-ink); font-weight: 800; line-height: 1.35; }

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

/* ---------------- 顶部导航 ---------------- */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-line);
}
.topbar .nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .logo {
  width: 42px; height: 42px; border-radius: 13px;
  background: var(--c-grad);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 900; font-size: 18px;
  box-shadow: 0 6px 16px rgba(46,120,180,.35);
}
.brand .brand-txt { line-height: 1.15; }
.brand .brand-txt strong { font-size: 19px; color: var(--c-ink); letter-spacing: .5px; }
.brand .brand-txt span { font-size: 11.5px; color: var(--c-muted); letter-spacing: 2px; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a.nav-item {
  padding: 9px 15px; border-radius: 999px;
  font-size: 15px; font-weight: 600; color: var(--c-body);
}
.main-nav a.nav-item:hover, .main-nav a.nav-item.active {
  color: var(--c-teal);
  background: rgba(46,196,182,.10);
}
.nav-cta {
  margin-left: 10px; padding: 10px 22px; border-radius: 999px;
  background: var(--c-grad); color: #fff !important; font-size: 15px; font-weight: 700;
  box-shadow: 0 8px 20px rgba(46,196,182,.35);
  transition: transform .25s ease, box-shadow .25s ease;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(46,196,182,.45); }

.nav-toggle {
  display: none; width: 42px; height: 42px; border: none; border-radius: 12px;
  background: var(--c-grad-soft); cursor: pointer; flex-direction: column;
  align-items: center; justify-content: center; gap: 4px;
}
.nav-toggle span { width: 20px; height: 2.4px; border-radius: 2px; background: var(--c-blue); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px;
  font-size: 15.5px; font-weight: 700; border: 2px solid transparent;
  cursor: pointer; transition: all .28s ease; line-height: 1.2;
}
.btn-primary { background: var(--c-grad); color: #fff; box-shadow: 0 10px 24px rgba(46,120,180,.32); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(46,120,180,.42); }
.btn-ghost { background: #fff; color: var(--c-blue); border-color: rgba(74,144,217,.55); }
.btn-ghost:hover { background: rgba(74,144,217,.07); transform: translateY(-3px); }
.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ---------------- 横幅/Banner ---------------- */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #EAF9F7 0%, #E7F1FC 55%, #F2F8FF 100%);
  padding: 96px 0 90px;
}
.hero::before {
  content: ""; position: absolute; inset: -40% -20% auto auto;
  width: 560px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(46,196,182,.22) 0%, transparent 62%);
  animation: floatBlob 9s ease-in-out infinite;
}
.hero::after {
  content: ""; position: absolute; left: -120px; bottom: -180px;
  width: 480px; height: 480px; border-radius: 50%;
  background: radial-gradient(circle, rgba(74,144,217,.20) 0%, transparent 64%);
  animation: floatBlob 11s ease-in-out infinite reverse;
}
@keyframes floatBlob { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(28px,-24px) scale(1.06); } }

.hero .hero-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero .tagline {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid rgba(46,196,182,.35);
  color: var(--c-teal); font-weight: 700; font-size: 13.5px;
  padding: 7px 18px; border-radius: 999px; margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}
.hero h1 { font-size: 46px; margin-bottom: 18px; letter-spacing: .5px; }
.hero h1 .grad {
  background: var(--c-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { font-size: 17.5px; margin-bottom: 30px; max-width: 560px; }
.hero .hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 34px; margin-top: 42px; flex-wrap: wrap; }
.hero-stats .stat strong { display: block; font-size: 30px; color: var(--c-ink); }
.hero-stats .stat span { font-size: 13.5px; color: var(--c-muted); }
.hero .hero-art {
  position: relative; text-align: center;
}
.hero .hero-art img.hero-img {
  border-radius: 30px; box-shadow: var(--shadow-lg);
  width: 100%; object-fit: cover; height: 420px;
}
.hero .float-chip {
  position: absolute; background: #fff; border-radius: 16px;
  box-shadow: var(--shadow-md); padding: 10px 16px;
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; color: var(--c-ink);
  animation: bob 4.5s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.hero .chip-1 { top: 26px; left: -14px; }
.hero .chip-2 { bottom: 52px; right: -8px; animation-delay: 1.4s; }
.hero .chip-3 { top: 46%; right: 34px; animation-delay: 2.6s; }

/* ---------------- 分区 ---------------- */
.section { padding: 88px 0; }
.section.alt { background: #fff; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-head .kicker {
  display: inline-block; font-size: 13px; font-weight: 800; letter-spacing: 3px;
  color: var(--c-teal); text-transform: uppercase; margin-bottom: 10px;
}
.section-head h2 { font-size: 34px; margin-bottom: 14px; }
.section-head p { font-size: 16px; }
.section-head .bar {
  width: 56px; height: 5px; border-radius: 3px; background: var(--c-grad);
  margin: 18px auto 0;
}

/* ---------------- 卡片 ---------------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

.card {
  background: var(--c-card); border-radius: var(--radius-lg);
  padding: 30px; box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease;
  border: 1px solid rgba(228,237,242,.8);
}
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.card .card-ico {
  width: 58px; height: 58px; border-radius: 17px;
  background: var(--c-grad-soft); display: flex; align-items: center; justify-content: center;
  color: var(--c-blue); font-size: 26px; margin-bottom: 18px;
}
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { font-size: 14.5px; }
.card .more { display: inline-block; margin-top: 14px; font-size: 14px; font-weight: 700; color: var(--c-teal); }

.card-img { padding: 0; overflow: hidden; }
.card-img .img-wrap { overflow: hidden; }
.card-img img { width: 100%; height: 210px; object-fit: cover; transition: transform .45s ease; }
.card-img:hover img { transform: scale(1.06); }
.card-img .card-body { padding: 24px 26px 28px; }

/* ---------------- 数字/优势 ---------------- */
.banner-band {
  background: var(--c-grad); border-radius: 30px; padding: 56px 40px;
  color: #fff; position: relative; overflow: hidden;
}
.banner-band::after {
  content: ""; position: absolute; right: -60px; top: -70px;
  width: 260px; height: 260px; border-radius: 50%; background: rgba(255,255,255,.12);
}
.banner-band h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }
.banner-band p { opacity: .92; }
.banner-band .band-nums { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; margin-top: 34px; position: relative; z-index: 2; }
.banner-band .bn { text-align: center; }
.banner-band .bn strong { display: block; font-size: 40px; }
.banner-band .bn span { font-size: 14px; opacity: .9; }

/* ---------------- 步骤 ---------------- */
.steps { display: grid; grid-template-columns: repeat(5,1fr); gap: 16px; counter-reset: step; }
.step { text-align: center; padding: 26px 16px; background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); position: relative; }
.step::before {
  counter-increment: step; content: "0" counter(step);
  display: block; width: 46px; height: 46px; line-height: 46px; border-radius: 50%;
  background: var(--c-grad); color: #fff; font-weight: 900; font-size: 16px;
  margin: 0 auto 14px;
}
.step h4 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13px; }

/* ---------------- 正文页 ---------------- */
.page-hero {
  padding: 70px 0 28px; background: var(--c-grad-soft); border-bottom: 1px solid var(--c-line);
}
.page-hero h1 { font-size: 38px; margin-bottom: 12px; }
.page-hero .crumbs { font-size: 13.5px; color: var(--c-muted); }
.page-hero .crumbs a:hover { color: var(--c-teal); }

.prose { background: #fff; border-radius: var(--radius-lg); padding: 44px; box-shadow: var(--shadow-sm); }
.prose h2 { font-size: 24px; margin: 36px 0 16px; padding-left: 14px; border-left: 5px solid var(--c-teal); }
.prose h3 { font-size: 19px; margin: 26px 0 12px; }
.prose p { margin-bottom: 16px; text-align: justify; }
.prose ul, .prose ol { margin: 0 0 16px 22px; }
.prose li { margin-bottom: 8px; padding-left: 6px; }
.prose ul li { list-style: disc; }
.prose ol li { list-style: decimal; }
.prose .pic { margin: 24px 0; border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); }
.prose blockquote {
  border-left: 4px solid var(--c-blue); background: #F1F7FD;
  padding: 16px 20px; border-radius: 0 12px 12px 0; margin: 20px 0; color: var(--c-body);
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }
.two-col .pic { margin: 0; }

/* ---------------- 页脚 ---------------- */
.site-footer { background: #0F2434; color: #B9C8D4; margin-top: 40px; padding: 64px 0 0; }
.site-footer a { color: #B9C8D4; }
.site-footer a:hover { color: #fff; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.foot-grid h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.foot-grid .f-brand p { font-size: 14px; margin-top: 14px; }
.foot-grid ul li { margin-bottom: 10px; font-size: 14px; }
.foot-grid .f-contact li { display: flex; gap: 10px; align-items: flex-start; }
.foot-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 0; font-size: 13px; text-align: center; color: #8FA3B3;
  display: flex; justify-content: center; gap: 18px; flex-wrap: wrap;
}
.foot-bottom a:hover { color: #fff; }

/* ---------------- 列表/新闻 ---------------- */
.list-layout { display: grid; grid-template-columns: 2.2fr 1fr; gap: 32px; align-items: start; }
.news-item { display: flex; gap: 22px; background: #fff; border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow-sm); margin-bottom: 20px; }
.news-item img { width: 200px; height: 132px; object-fit: cover; border-radius: var(--radius-md); }
.news-item h3 { font-size: 18px; margin-bottom: 6px; }
.news-item h3 a:hover { color: var(--c-teal); }
.news-item .meta { font-size: 12.5px; color: var(--c-muted); margin-bottom: 8px; }
.news-item p { font-size: 14px; }
.side-panel { position: sticky; top: 96px; }
.panel { background: #fff; border-radius: var(--radius-lg); padding: 24px; box-shadow: var(--shadow-sm); margin-bottom: 22px; }
.panel h4 { font-size: 16px; margin-bottom: 14px; padding-bottom: 12px; border-bottom: 2px solid var(--c-line); }
.panel ul li { padding: 9px 0; border-bottom: 1px dashed var(--c-line); font-size: 14px; }
.panel ul li a:hover { color: var(--c-teal); }

/* ---------------- 面包屑/分页/徽标 ---------------- */
.pager { display: flex; justify-content: center; gap: 8px; margin-top: 30px; }
.pager a, .pager span {
  min-width: 40px; height: 40px; line-height: 40px; text-align: center;
  border-radius: 12px; background: #fff; box-shadow: var(--shadow-sm); font-size: 14px; font-weight: 700;
}
.pager .cur { background: var(--c-grad); color: #fff; }
.badge {
  display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 12px;
  border-radius: 999px; background: rgba(46,196,182,.12); color: var(--c-teal); margin-right: 6px;
}

/* ---------------- 表单 ---------------- */
.form-card { background: #fff; border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 700; color: var(--c-ink); margin-bottom: 8px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 16px; border: 1.6px solid var(--c-line); border-radius: 12px;
  font-size: 15px; font-family: inherit; background: #FAFDFE; color: var(--c-ink); outline: none;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--c-teal); box-shadow: 0 0 0 4px rgba(46,196,182,.14); background: #fff;
}

/* ---------------- 联系卡片 ---------------- */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 40px; }
.contact-cards .cc { background: #fff; border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-sm); text-align: center; }
.contact-cards .cc .icon {
  width: 60px; height: 60px; margin: 0 auto 16px; border-radius: 18px;
  background: var(--c-grad-soft); color: var(--c-blue); font-size: 28px;
  display: flex; align-items: center; justify-content: center;
}
.contact-cards .cc h3 { font-size: 17px; margin-bottom: 8px; }
.contact-cards .cc p { font-size: 14px; }

/* ---------------- 成员卡片 ---------------- */
.team-card { text-align: center; padding: 30px 20px; }
.team-card .avatar {
  width: 90px; height: 90px; border-radius: 50%; margin: 0 auto 16px;
  background: var(--c-grad); color: #fff; font-size: 34px; font-weight: 900;
  display: flex; align-items: center; justify-content: center;
}
.team-card h3 { font-size: 18px; }
.team-card .role { color: var(--c-teal); font-size: 13.5px; font-weight: 700; margin-bottom: 12px; }

/* ---------------- CTA ---------------- */
.cta-strip { background: var(--c-grad); border-radius: 30px; padding: 48px 44px; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; color: #fff; position: relative; overflow: hidden; }
.cta-strip::before { content: ""; position: absolute; left: -70px; bottom: -110px; width: 260px; height: 260px; border-radius: 50%; background: rgba(255,255,255,.13); }
.cta-strip h2 { color: #fff; font-size: 27px; margin-bottom: 8px; }
.cta-strip p { opacity: .94; }
.cta-strip .btn-ghost { background: transparent; border-color: rgba(255,255,255,.8); color: #fff; }
.cta-strip .btn-ghost:hover { background: rgba(255,255,255,.14); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .hero h1 { font-size: 38px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .hero .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero .hero-art { max-width: 640px; margin: 0 auto; }
  .list-layout { grid-template-columns: 1fr; }
  .side-panel { position: static; }
  .banner-band .band-nums { grid-template-columns: repeat(2, 1fr); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-toggle { display: flex; }
  .main-nav {
    display: none; position: absolute; top: 76px; left: 0; right: 0;
    background: #fff; flex-direction: column; gap: 4px; padding: 16px 24px 22px;
    box-shadow: 0 24px 40px rgba(34,48,60,.12); border-bottom: 1px solid var(--c-line);
  }
  .main-nav.open { display: flex; }
  .main-nav a.nav-item { width: 100%; text-align: center; }
  .nav-cta { margin-left: 0; width: 100%; text-align: center; }
  .hero { padding: 64px 0 60px; }
  .hero h1 { font-size: 30px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 27px; }
  .two-col { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .news-item { flex-direction: column; }
  .news-item img { width: 100%; height: 200px; }
  .foot-bottom { flex-direction: column; gap: 6px; }
  .prose { padding: 28px 20px; }
}

/* ---------------- 动画工具 ---------------- */
.fade-up { opacity: 0; transform: translateY(26px); transition: opacity .6s ease, transform .6s ease; }
.fade-up.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}