/* ==========================================================
   中国大模型集团 CLM Group — 官网设计系统
   设计语言参考 WorkBuddy 官网：
   主色  #28b894 (薄荷绿) → #3b82f6 (蓝) 渐变
   点缀  #6c4dff / #8b5cf6 / #ae59ec → #535aed
   深色  #191a23 / #1a1a1a   次要文字 #666 / #858699
   浅底  #f8f9fa             描边 #e8e8e8 / #d2d3e0
   圆角  8 / 12 / 16 / 999px
   阴影  0 8px 32px rgba(0,0,0,.10) / 0 12px 32px rgba(0,0,0,.12)
   导航  毛玻璃 backdrop-filter: blur(40px)
   ========================================================== */

:root {
  --brand:        #28b894;
  --brand-light:  #32e6b9;
  --brand-deep:   #22a683;
  --blue:         #3b82f6;
  --purple:       #6c4dff;
  --purple-2:     #8b5cf6;

  --ink:          #191a23;
  --ink-2:        #1a1a1a;
  --text:         #333333;
  --muted:        #666666;
  --muted-2:      #858699;
  --line:         #e8e8e8;
  --line-2:       #d2d3e0;
  --soft:         #f8f9fa;

  --grad-brand:   linear-gradient(135deg, #28b894 0%, #3b82f6 100%);
  --grad-brand-h: linear-gradient(135deg, #32e6b9 0%, #28b894 45%, #3b82f6 100%);
  --grad-purple:  linear-gradient(90deg, #ae59ec 0%, #535aed 100%);

  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-xl: 22px;
  --r-pill: 999px;

  --sh-sm: 0 2px 8px rgba(0, 0, 0, .06);
  --sh-md: 0 8px 32px rgba(0, 0, 0, .10);
  --sh-lg: 0 12px 32px rgba(0, 0, 0, .12);
  --sh-brand: 0 8px 24px rgba(40, 184, 148, .35);
  --sh-brand-lg: 0 12px 32px rgba(40, 184, 148, .30), 0 2px 8px rgba(0, 0, 0, .06);

  --nav-h: 68px;
  --maxw: 1200px;

  --font: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC",
          system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: #fff;
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 { margin: 0; color: var(--ink); line-height: 1.3; font-weight: 700; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button, input, select { font-family: inherit; font-size: inherit; }

::selection { background: rgba(40, 184, 148, .22); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: 40px;
  padding: 0 20px;
  border: 0;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .22s ease, box-shadow .22s ease,
              background .22s ease, color .22s ease, border-color .22s ease;
}
.btn-lg { height: 50px; padding: 0 30px; font-size: 15.5px; border-radius: var(--r-md); }
.btn svg { transition: transform .22s ease; }
.btn:hover svg { transform: translateX(3px); }

.btn-primary {
  color: #fff;
  background: var(--grad-brand);
  box-shadow: var(--sh-brand);
}
.btn-primary:hover {
  background: var(--grad-brand-h);
  transform: translateY(-2px);
  box-shadow: var(--sh-brand-lg);
}

.btn-white {
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-2);
  box-shadow: var(--sh-sm);
}
.btn-white:hover {
  transform: translateY(-2px);
  border-color: var(--brand);
  color: var(--brand-deep);
  box-shadow: var(--sh-md);
}

.btn-ghost {
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
}
.btn-ghost:hover { border-color: var(--brand); color: var(--brand-deep); }

.btn-dark {
  color: #fff;
  background: var(--ink);
  box-shadow: 0 8px 24px rgba(25, 26, 35, .28);
}
.btn-dark:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(25, 26, 35, .34); }

/* ---------------- 导航 ---------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255, 255, 255, 0);
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.nav.scrolled {
  background: rgba(255, 255, 255, .82);
  backdrop-filter: blur(40px) saturate(180%);
  -webkit-backdrop-filter: blur(40px) saturate(180%);
  border-bottom-color: rgba(232, 232, 232, .8);
  box-shadow: 0 2px 20px rgba(0, 0, 0, .04);
}
.nav-inner {
  max-width: var(--maxw);
  height: var(--nav-h);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 34px; height: 34px;
  border-radius: 10px;
  display: grid; place-items: center;
  box-shadow: 0 4px 14px rgba(40, 184, 148, .38);
}
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-text b { font-size: 15.5px; color: var(--ink); letter-spacing: .2px; }
.logo-text i {
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: 2.2px;
  color: var(--muted-2);
  font-weight: 600;
}

.nav-list { display: flex; align-items: center; gap: 4px; margin-left: 6px; }
.nav-item {
  position: relative;
  padding: 8px 13px;
  font-size: 14.5px;
  color: var(--text);
  border-radius: var(--r-sm);
  transition: color .2s ease, background .2s ease;
}
.nav-item::after {
  content: "";
  position: absolute;
  left: 13px; right: 13px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
  opacity: 0;
  transform: scaleX(.4);
  transition: opacity .25s ease, transform .25s ease;
}
.nav-item:hover { color: var(--brand-deep); }
.nav-item:hover::after,
.nav-item.active::after { opacity: 1; transform: scaleX(1); }
.nav-item.active { color: var(--brand-deep); font-weight: 600; }

.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: #fff;
  cursor: pointer;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.nav-toggle span {
  display: block;
  width: 17px; height: 1.8px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(5.8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5.8px) rotate(-45deg); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 78px) 0 84px;
  text-align: center;
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 50% -10%, #f2fbf8 0%, #f7f8ff 42%, #ffffff 78%);
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(72px); opacity: .5; }
.orb-1 { width: 460px; height: 460px; top: -150px; left: -70px;  background: rgba(50, 230, 185, .40); }
.orb-2 { width: 520px; height: 520px; top: -80px;  right: -120px; background: rgba(108, 77, 255, .26); }
.orb-3 { width: 400px; height: 400px; bottom: 40px; left: 46%;    background: rgba(59, 130, 246, .22); }

.grid-mask {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(25, 26, 35, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 26, 35, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(85% 62% at 50% 32%, #000 0%, transparent 76%);
  -webkit-mask-image: radial-gradient(85% 62% at 50% 32%, #000 0%, transparent 76%);
}

.hero-inner { position: relative; z-index: 2; max-width: 940px; margin: 0 auto; padding: 0 24px; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 15px 0 12px;
  margin-bottom: 26px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .9);
  border: 1px solid rgba(40, 184, 148, .3);
  box-shadow: 0 4px 16px rgba(40, 184, 148, .14);
  font-size: 13px; color: var(--brand-deep); font-weight: 600;
  backdrop-filter: blur(8px);
}
.hero-badge .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--brand-light);
  box-shadow: 0 0 0 0 rgba(50, 230, 185, .7);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  70%  { box-shadow: 0 0 0 8px rgba(50, 230, 185, 0); }
  100% { box-shadow: 0 0 0 0 rgba(50, 230, 185, 0); }
}

.hero-title {
  font-size: clamp(34px, 5.4vw, 60px);
  letter-spacing: -.5px;
  margin-bottom: 22px;
  font-weight: 800;
}
.grad-text {
  background: var(--grad-purple);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-desc {
  max-width: 690px;
  margin: 0 auto 34px;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--muted);
}
.hero-desc b { color: var(--ink); font-weight: 600; }

.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 52px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 10px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .72);
  border: 1px solid rgba(255, 255, 255, .9);
  box-shadow: var(--sh-md);
  backdrop-filter: blur(14px);
}
.hstat { display: flex; flex-direction: column; gap: 2px; }
.hstat + .hstat { border-left: 1px solid var(--line); }
.hstat b {
  font-size: 27px;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -.4px;
}
.hstat span { font-size: 12.5px; color: var(--muted-2); }

/* ---------------- 产品演示窗 ---------------- */
.hero-showcase {
  position: relative;
  z-index: 3;
  max-width: 1080px;
  margin: 62px auto 0;
  padding: 0 24px;
}
.showcase-frame {
  border-radius: var(--r-xl);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(25, 26, 35, .16), 0 2px 8px rgba(0, 0, 0, .05);
  transform: perspective(1600px) rotateX(2.4deg);
  transition: transform .5s ease;
}
.showcase-frame:hover { transform: perspective(1600px) rotateX(0deg); }

.showcase-bar {
  display: flex; align-items: center; gap: 7px;
  height: 42px; padding: 0 16px;
  background: #fbfcfd;
  border-bottom: 1px solid var(--line);
}
.tl { width: 11px; height: 11px; border-radius: 50%; }
.tl-r { background: #ff5f57; } .tl-y { background: #febc2e; } .tl-g { background: #28c840; }
.showcase-path {
  margin-left: 12px;
  flex: 1;
  height: 25px;
  display: flex; align-items: center;
  padding: 0 12px;
  border-radius: var(--r-sm);
  background: #f2f4f7;
  font-size: 12px;
  color: var(--muted-2);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.showcase-body { display: grid; grid-template-columns: 186px 1fr; min-height: 396px; }

.sc-side {
  padding: 18px 12px;
  background: #fbfcfd;
  border-right: 1px solid var(--line);
  text-align: left;
}
.sc-side-title {
  padding: 0 10px 8px;
  font-size: 11px; font-weight: 700;
  letter-spacing: 1px;
  color: #a3a5b2;
  text-transform: uppercase;
}
.sc-nav {
  display: block;
  padding: 8px 12px;
  margin-bottom: 2px;
  border-radius: var(--r-sm);
  font-size: 13.5px;
  color: var(--muted);
  cursor: default;
  transition: background .2s ease, color .2s ease;
}
.sc-nav:hover { background: #f2f4f7; color: var(--ink); }
.sc-nav.active {
  background: linear-gradient(#eef9f7, #eef9f7) padding-box,
              linear-gradient(180deg, rgba(40,184,148,0), rgba(40,184,148,.12) 20%, rgba(40,184,148,.22) 100%) border-box;
  border: 1px solid transparent;
  color: var(--brand-deep);
  font-weight: 600;
}

.sc-main { padding: 20px 22px; text-align: left; }
.sc-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.sc-head h4 { font-size: 16.5px; margin-bottom: 4px; }
.sc-head p { font-size: 12.5px; color: var(--muted-2); }
.sc-status {
  display: inline-flex; align-items: center; gap: 6px;
  flex-shrink: 0;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: rgba(40, 184, 148, .1);
  color: var(--brand-deep);
  font-size: 12.5px; font-weight: 600;
}
.sc-status i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand);
  animation: pulse 2s infinite;
}

.sc-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 18px; }
.sc-kpi {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fcfdfe;
}
.sc-kpi b { display: block; font-size: 19px; font-weight: 700; color: var(--ink); }
.sc-kpi b em { font-style: normal; font-size: 11.5px; font-weight: 500; color: var(--muted-2); margin-left: 3px; }
.sc-kpi span { font-size: 11.5px; color: var(--muted-2); }

.sc-chart {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 14px 16px 8px;
  margin-bottom: 16px;
  background: #fcfdfe;
}
.sc-chart-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; color: var(--muted-2); margin-bottom: 8px;
}
.legend { display: inline-flex; align-items: center; gap: 12px; }
.legend i { display: inline-block; width: 14px; height: 2.5px; border-radius: 2px; margin-right: 4px; vertical-align: middle; }
.legend .l1 { background: var(--brand); }
.legend .l2 { background: var(--purple); }
.spark { width: 100%; height: 130px; }

.sc-log {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #10131a;
  padding: 12px 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 12px;
  line-height: 1.95;
  color: #b9c0cc;
  overflow: hidden;
}
.sc-log-row { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sc-log .ok { color: #32e6b9; }
.sc-log .warn { color: #febc2e; }

/* ---------------- 通用 Section ---------------- */
.section { padding: 96px 0; }
.section-soft { background: var(--soft); }
.section-dark {
  background: linear-gradient(135deg, #1a202c 0%, #4c4f6b 100%);
  position: relative;
  overflow: hidden;
}
.section-dark::before {
  content: "";
  position: absolute;
  width: 620px; height: 620px;
  top: -260px; right: -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(50, 230, 185, .18) 0%, transparent 68%);
  pointer-events: none;
}
.section-dark::after {
  content: "";
  position: absolute;
  width: 520px; height: 520px;
  bottom: -240px; left: -160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 77, 255, .20) 0%, transparent 68%);
  pointer-events: none;
}
.section-dark > .wrap { position: relative; z-index: 2; }

.sec-head { max-width: 720px; margin: 0 auto 54px; text-align: center; }
.sec-label {
  display: inline-block;
  padding: 4px 14px;
  margin-bottom: 16px;
  border-radius: var(--r-pill);
  background: rgba(40, 184, 148, .1);
  color: var(--brand-deep);
  font-size: 12.5px; font-weight: 700;
  letter-spacing: .5px;
}
.sec-label-light {
  background: rgba(50, 230, 185, .14);
  color: var(--brand-light);
}
.sec-title { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 14px; letter-spacing: -.3px; }
.sec-title-light { color: #fff; }
.sec-desc { font-size: 15.5px; color: var(--muted); line-height: 1.9; }
.sec-desc-light { color: rgba(255, 255, 255, .68); }

/* ---------------- 主营业务卡片 ---------------- */
.biz-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.biz-card {
  position: relative;
  padding: 30px 26px 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: #fff;
  box-shadow: var(--sh-sm);
  transition: transform .32s cubic-bezier(.22, .68, .36, 1),
              box-shadow .32s ease, border-color .32s ease;
  overflow: hidden;
}
.biz-card::after {
  content: "";
  position: absolute;
  left: 0; top: 0; right: 0;
  height: 3px;
  background: var(--grad-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .38s cubic-bezier(.22, .68, .36, 1);
}
.biz-card:hover {
  transform: translateY(-6px);
  border-color: rgba(40, 184, 148, .35);
  box-shadow: var(--sh-lg);
}
.biz-card:hover::after { transform: scaleX(1); }

.biz-icon {
  width: 50px; height: 50px;
  border-radius: 13px;
  display: grid; place-items: center;
  margin-bottom: 18px;
  color: #fff;
}
.biz-icon svg { width: 25px; height: 25px; }
.biz-icon[data-tone="a"] { background: var(--grad-brand);    box-shadow: 0 6px 18px rgba(40, 184, 148, .3); }
.biz-icon[data-tone="b"] { background: linear-gradient(135deg, #6c4dff, #3b82f6); box-shadow: 0 6px 18px rgba(108, 77, 255, .3); }
.biz-icon[data-tone="c"] { background: linear-gradient(135deg, #28b894, #20a080); box-shadow: 0 6px 18px rgba(40, 184, 148, .3); }
.biz-icon[data-tone="d"] { background: var(--grad-purple);   box-shadow: 0 6px 18px rgba(174, 89, 236, .3); }
.biz-icon[data-tone="e"] { background: linear-gradient(135deg, #3b82f6, #28b894); box-shadow: 0 6px 18px rgba(59, 130, 246, .3); }
.biz-icon[data-tone="f"] { background: linear-gradient(135deg, #8b5cf6, #6c4dff); box-shadow: 0 6px 18px rgba(139, 92, 246, .3); }

.biz-card h3 { font-size: 18.5px; margin-bottom: 10px; }
.biz-card p { font-size: 14.2px; color: var(--muted); line-height: 1.85; min-height: 79px; }

.biz-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.biz-tags li {
  padding: 4px 11px;
  border-radius: var(--r-pill);
  background: var(--soft);
  border: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

/* ---------------- 模型矩阵 ---------------- */
.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.model-card {
  position: relative;
  padding: 28px 26px 24px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .055);
  border: 1px solid rgba(255, 255, 255, .13);
  backdrop-filter: blur(14px);
  transition: transform .32s cubic-bezier(.22, .68, .36, 1),
              background .32s ease, border-color .32s ease, box-shadow .32s ease;
}
.model-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, .095);
  border-color: rgba(50, 230, 185, .48);
  box-shadow: 0 16px 40px rgba(0, 0, 0, .34);
}
.model-card[data-hot="true"] {
  background: rgba(255, 255, 255, .085);
  border-color: rgba(50, 230, 185, .42);
  box-shadow: 0 8px 32px rgba(50, 230, 185, .12);
}
.model-flag {
  position: absolute;
  top: 18px; right: 18px;
  padding: 3px 11px;
  border-radius: var(--r-pill);
  background: var(--grad-brand);
  color: #fff;
  font-size: 11.5px; font-weight: 700;
}
.model-name {
  font-size: 21px; font-weight: 800; color: #fff;
  letter-spacing: -.2px;
  margin-bottom: 5px;
}
.model-meta { font-size: 13px; color: var(--brand-light); margin-bottom: 14px; font-weight: 600; }
.model-card p { font-size: 14px; color: rgba(255, 255, 255, .62); line-height: 1.8; min-height: 75px; }

.model-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .12);
}
.model-specs b { display: block; font-size: 17px; font-weight: 700; color: #fff; }
.model-specs span { font-size: 11.5px; color: rgba(255, 255, 255, .48); }

.model-cta {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
  margin-top: 34px;
  padding: 22px 28px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .13);
}
.model-cta span { font-size: 14.5px; color: rgba(255, 255, 255, .78); }

/* ---------------- 行业方案 Tab ---------------- */
.tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 34px;
}
.tab {
  height: 40px;
  padding: 0 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: #fff;
  color: var(--muted);
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s ease;
}
.tab:hover { border-color: var(--brand); color: var(--brand-deep); }
.tab.active {
  background: var(--grad-brand);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--sh-brand);
}

.tab-panels { position: relative; }
.tab-panel {
  display: none;
  grid-template-columns: 1.05fr .95fr;
  gap: 44px;
  align-items: center;
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: #fff;
  box-shadow: var(--sh-md);
  animation: fadeUp .42s ease both;
}
.tab-panel.active { display: grid; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

.panel-text h3 { font-size: 24px; margin-bottom: 12px; }
.panel-text > p { font-size: 14.6px; color: var(--muted); line-height: 1.9; margin-bottom: 18px; }

.panel-list { display: grid; gap: 10px; margin-bottom: 24px; }
.panel-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14.2px; color: var(--text); line-height: 1.7;
}
.panel-list i {
  flex-shrink: 0;
  width: 17px; height: 17px;
  margin-top: 4px;
  border-radius: 50%;
  background: rgba(40, 184, 148, .14);
  position: relative;
}
.panel-list i::after {
  content: "";
  position: absolute;
  left: 5.5px; top: 3.2px;
  width: 4.5px; height: 8px;
  border: solid var(--brand-deep);
  border-width: 0 2px 2px 0;
  transform: rotate(43deg);
}

.panel-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.panel-metrics > div {
  padding: 14px 16px;
  border-radius: var(--r-md);
  background: var(--soft);
  border: 1px solid var(--line);
}
.panel-metrics b { display: block; font-size: 21px; font-weight: 800; color: var(--brand-deep); }
.panel-metrics b em { font-style: normal; font-size: 13px; margin-left: 2px; }
.panel-metrics span { font-size: 12px; color: var(--muted-2); line-height: 1.5; display: block; }

.panel-visual {
  position: relative;
  min-height: 320px;
  border-radius: var(--r-lg);
  background:
    radial-gradient(circle at 30% 25%, rgba(50, 230, 185, .16), transparent 58%),
    radial-gradient(circle at 75% 72%, rgba(108, 77, 255, .16), transparent 58%),
    var(--soft);
  border: 1px solid var(--line);
  overflow: hidden;
}
.pv-card {
  position: absolute;
  padding: 13px 18px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-md);
  animation: float 5.5s ease-in-out infinite;
}
.pv-card b { display: block; font-size: 14.5px; color: var(--ink); }
.pv-card span { font-size: 12.5px; color: var(--brand-deep); font-weight: 600; }
.pv-1 { top: 14%;  left: 8%; }
.pv-2 { top: 46%;  right: 8%;  animation-delay: .9s; }
.pv-3 { bottom: 10%; left: 14%; animation-delay: 1.8s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-9px); }
}
.pv-ring {
  position: absolute;
  top: 50%; left: 50%;
  width: 132px; height: 132px;
  margin: -66px 0 0 -66px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--grad-brand);
  box-shadow: 0 12px 34px rgba(40, 184, 148, .38);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
}
.pv-ring::before {
  content: "";
  position: absolute;
  inset: -16px;
  border-radius: 50%;
  border: 1.5px dashed rgba(40, 184, 148, .32);
  animation: spin 22s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------- 技术架构 ---------------- */
.arch { max-width: 900px; margin: 0 auto 54px; }
.arch-layer {
  display: flex; align-items: center; gap: 22px;
  padding: 20px 26px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .3s ease, box-shadow .3s ease;
}
.arch-layer:hover { transform: translateX(6px); box-shadow: var(--sh-md); }
.arch-label {
  flex-shrink: 0;
  width: 152px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}
.arch-layer[data-tone="a"] .arch-label { color: var(--purple); }
.arch-layer[data-tone="b"] .arch-label { color: var(--blue); }
.arch-layer[data-tone="c"] .arch-label { color: var(--brand-deep); }
.arch-layer[data-tone="d"] .arch-label { color: var(--muted); }

.arch-items { display: flex; flex-wrap: wrap; gap: 8px; }
.arch-items span {
  padding: 5px 13px;
  border-radius: var(--r-sm);
  background: var(--soft);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  transition: all .22s ease;
}
.arch-layer:hover .arch-items span { border-color: rgba(40, 184, 148, .3); color: var(--ink); }

.arch-arrow {
  width: 2px; height: 22px;
  margin: 0 auto;
  background: linear-gradient(180deg, rgba(40, 184, 148, .55), rgba(59, 130, 246, .35));
  position: relative;
}
.arch-arrow::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -1px;
  width: 7px; height: 7px;
  margin-left: -3.5px;
  border: solid rgba(59, 130, 246, .55);
  border-width: 0 1.8px 1.8px 0;
  transform: rotate(45deg);
}

.plat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.plat-item {
  text-align: center;
  padding: 26px 18px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .3s ease, box-shadow .3s ease;
}
.plat-item:hover { transform: translateY(-5px); box-shadow: var(--sh-md); }
.plat-item b {
  display: block;
  font-size: 28px; font-weight: 800;
  color: var(--ink);
  letter-spacing: -.5px;
  margin-bottom: 6px;
}
.plat-item b small { font-size: 15px; font-weight: 700; }
.plat-item span { font-size: 13px; color: var(--muted-2); }

/* ---------------- 客户生态 ---------------- */
.logo-wall {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-bottom: 48px;
}
.logo-wall span {
  display: grid; place-items: center;
  height: 62px;
  border-radius: var(--r-md);
  background: var(--soft);
  border: 1px solid var(--line);
  font-size: 13.2px;
  color: var(--muted);
  font-weight: 500;
  transition: all .28s ease;
}
.logo-wall span:hover {
  background: #fff;
  border-color: rgba(40, 184, 148, .4);
  color: var(--brand-deep);
  transform: translateY(-3px);
  box-shadow: var(--sh-sm);
}

.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  padding: 28px 26px 24px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .32s ease, box-shadow .32s ease, border-color .32s ease;
}
.case-card:hover {
  transform: translateY(-6px);
  border-color: rgba(40, 184, 148, .35);
  box-shadow: var(--sh-lg);
}
.case-tag {
  display: inline-block;
  padding: 3px 12px;
  margin-bottom: 14px;
  border-radius: var(--r-pill);
  background: rgba(108, 77, 255, .1);
  color: var(--purple);
  font-size: 12px; font-weight: 700;
}
.case-card h3 { font-size: 17.5px; margin-bottom: 10px; line-height: 1.5; }
.case-card p { font-size: 14px; color: var(--muted); line-height: 1.85; margin-bottom: 16px; }
.case-link { font-size: 13.5px; font-weight: 600; color: var(--brand-deep); }

/* ---------------- 关于 ---------------- */
.about-wrap { display: grid; grid-template-columns: 1fr .85fr; gap: 54px; align-items: start; }
.about-text .sec-head { text-align: left; margin: 0 0 26px; }
.about-text .sec-title { font-size: clamp(24px, 2.8vw, 32px); }
.about-points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.about-points > div {
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
}
.about-points b { display: block; font-size: 22px; font-weight: 800; color: var(--brand-deep); margin-bottom: 3px; }
.about-points span { font-size: 12.8px; color: var(--muted); }

.about-timeline { position: relative; padding-left: 26px; }
.about-timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand-light), var(--purple));
  opacity: .32;
}
.tl-item { position: relative; padding: 0 0 22px 4px; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -26px; top: 7px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 2.5px solid var(--brand);
  box-shadow: 0 0 0 4px rgba(40, 184, 148, .1);
}
.tl-year { font-size: 15px; font-weight: 800; color: var(--ink); margin-right: 8px; }
.tl-item p { font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ---------------- CTA ---------------- */
.cta-section {
  position: relative;
  padding: 88px 0;
  overflow: hidden;
  background: linear-gradient(120deg, #1a202c 0%, #2b3050 45%, #4c4f6b 100%);
}
.cta-section::before {
  content: "";
  position: absolute;
  width: 700px; height: 700px;
  top: -320px; left: -160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(50, 230, 185, .22) 0%, transparent 66%);
}
.cta-section::after {
  content: "";
  position: absolute;
  width: 560px; height: 560px;
  bottom: -280px; right: -120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 77, 255, .26) 0%, transparent 66%);
}
.cta-inner {
  position: relative; z-index: 2;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}
.cta-inner h2 { font-size: clamp(26px, 3.6vw, 40px); color: #fff; margin-bottom: 16px; letter-spacing: -.3px; }
.cta-inner > p { font-size: 15.5px; color: rgba(255, 255, 255, .68); line-height: 1.9; margin-bottom: 34px; }

.cta-form {
  display: grid;
  grid-template-columns: repeat(4, 1fr) auto;
  gap: 12px;
  padding: 16px;
  border-radius: var(--r-lg);
  background: rgba(255, 255, 255, .07);
  border: 1px solid rgba(255, 255, 255, .14);
  backdrop-filter: blur(14px);
}
.cta-form input,
.cta-form select {
  height: 46px;
  padding: 0 15px;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, .09);
  color: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color .22s ease, background .22s ease;
}
.cta-form input::placeholder { color: rgba(255, 255, 255, .45); }
.cta-form input:focus,
.cta-form select:focus {
  border-color: var(--brand-light);
  background: rgba(255, 255, 255, .14);
}
.cta-form select { appearance: none; cursor: pointer; }
.cta-form select option { color: #191a23; }
.cta-form input.invalid { border-color: #ff8f8f; }

.cta-note { margin-top: 18px; font-size: 12.8px; color: rgba(255, 255, 255, .5); }
.cta-note.ok { color: var(--brand-light); font-weight: 600; }

.cta-contacts {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, .12);
  font-size: 13.5px;
  color: rgba(255, 255, 255, .62);
}

/* ---------------- 页脚 ---------------- */
.footer { padding: 62px 0 0; background: #14161f; color: rgba(255, 255, 255, .6); }
.footer-wrap { display: grid; grid-template-columns: 300px 1fr; gap: 48px; padding-bottom: 44px; }
.footer-brand .logo-text b { color: #fff; }
.footer-brand p { margin-top: 16px; font-size: 13.6px; line-height: 1.85; max-width: 260px; }

.footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.fcol { display: flex; flex-direction: column; gap: 11px; }
.fcol h5 { font-size: 14px; color: #fff; margin-bottom: 4px; }
.fcol a { font-size: 13.4px; color: rgba(255, 255, 255, .55); transition: color .2s ease; width: fit-content; }
.fcol a:hover { color: var(--brand-light); }

.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px 24px;
  border-top: 1px solid rgba(255, 255, 255, .09);
  font-size: 12.8px;
  color: rgba(255, 255, 255, .42);
}
.fb-links { display: flex; gap: 20px; }
.fb-links a:hover { color: var(--brand-light); }

/* ---------------- 滚动显现 ---------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .68s cubic-bezier(.22, .68, .36, 1),
              transform .68s cubic-bezier(.22, .68, .36, 1);
}
.reveal.in { opacity: 1; transform: none; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
  .biz-grid, .model-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .logo-wall { grid-template-columns: repeat(4, 1fr); }
  .plat-grid { grid-template-columns: repeat(2, 1fr); }
  .about-wrap { grid-template-columns: 1fr; gap: 40px; }
  .footer-wrap { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 900px) {
  .nav-list {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 12px 20px 20px;
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--sh-md);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .26s ease, transform .26s ease, visibility .26s;
  }
  .nav-list.open { opacity: 1; transform: none; visibility: visible; }
  .nav-item { padding: 12px 8px; font-size: 15.5px; }
  .nav-item::after { display: none; }
  .nav-toggle { display: flex; }
  .nav-actions .btn-ghost { display: none; }

  .tab-panel { grid-template-columns: 1fr; gap: 30px; padding: 26px 22px; }
  .panel-visual { min-height: 280px; }
  .cta-form { grid-template-columns: 1fr 1fr; }
  .cta-form .btn { grid-column: 1 / -1; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
  .arch-layer { flex-direction: column; align-items: flex-start; gap: 12px; }
  .arch-label { width: auto; }
}

@media (max-width: 720px) {
  .section { padding: 68px 0; }
  .hero { padding: calc(var(--nav-h) + 52px) 0 60px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 18px 10px; }
  .hstat:nth-child(3) { border-left: 0; }
  .hstat { padding: 0 6px; }
  .biz-grid, .model-grid, .case-grid { grid-template-columns: 1fr; }
  .showcase-body { grid-template-columns: 1fr; min-height: 0; }
  .sc-side { display: flex; gap: 6px; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .sc-side-title { display: none; }
  .sc-nav { white-space: nowrap; }
  .sc-kpis { grid-template-columns: repeat(2, 1fr); }
  .panel-metrics { grid-template-columns: 1fr; }
  .logo-wall { grid-template-columns: repeat(2, 1fr); }
  .plat-grid { grid-template-columns: 1fr 1fr; }
  .about-points { grid-template-columns: 1fr; }
  .cta-form { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}