/* ============================================================
   鲲腾 GEO — Apple 风格营销站
   配色：浅蓝 / 白 / 浅绿 / 浅紫
   ============================================================ */
:root {
  --ink: #1d1d1f;
  --ink-2: #424245;
  --gray: #6e6e73;
  --line: rgba(0, 0, 0, .08);
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --blue: #2e6bff;
  --blue-deep: #1b3c8c;
  --blue-soft: #eaf2ff;
  --green: #17b877;
  --green-soft: #e7f8ef;
  --purple: #7b5cff;
  --purple-soft: #f0edff;
  --grad: linear-gradient(96deg, #2e6bff 0%, #7b5cff 55%, #17b877 120%);
  --radius: 19px;
  --shadow: 0 20px 60px rgba(29, 60, 142, .10);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro SC",
          "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  letter-spacing: .01em;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.wrap { width: min(1060px, 90vw); margin: 0 auto; }

/* ---------- 通用组件 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 28px; border-radius: 980px;
  font-size: 15px; font-weight: 600; letter-spacing: .02em;
  transition: transform .3s ease, box-shadow .3s ease, background .3s ease;
  cursor: pointer; white-space: nowrap;
}
.btn-primary {
  background: var(--blue); color: #fff;
  box-shadow: 0 8px 24px rgba(46, 107, 255, .32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(46, 107, 255, .42); background: #2359e6; }
.btn-light {
  background: #fff; color: var(--blue-deep);
  box-shadow: 0 8px 24px rgba(10, 22, 60, .22);
}
.btn-light:hover { transform: translateY(-2px); }
.btn-lg { padding: 16px 38px; font-size: 16.5px; }
.btn-sm { padding: 7px 16px; font-size: 13px; }

.link-more { color: var(--blue); font-weight: 600; font-size: 15px; }
.link-more .arr { font-size: 17px; margin-left: 2px; }
.link-more:hover { text-decoration: underline; }

.chip {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 700; letter-spacing: .12em;
  color: var(--blue); background: var(--blue-soft);
  padding: 6px 14px; border-radius: 980px; margin-bottom: 16px;
}
.chip-blue { color: var(--blue); background: var(--blue-soft); }
.chip-green { color: #0e9663; background: var(--green-soft); }
.chip-purple { color: var(--purple); background: var(--purple-soft); }
.chip-dark { color: #9cc0ff; background: rgba(120, 160, 255, .14); }

.sec-title {
  font-size: clamp(27px, 3.7vw, 45px);
  font-weight: 700; letter-spacing: -.02em; line-height: 1.16;
}
.sec-sub {
  margin-top: 14px; font-size: clamp(14.5px, 1.35vw, 16px);
  color: var(--gray); max-width: 700px;
}
.sec-sub b { color: var(--ink-2); }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-title .grad-text { white-space: nowrap; }
.grad-text-2 { background: linear-gradient(96deg, #6ea8ff, #37e0a2); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.grad-text-3 { background: linear-gradient(96deg, #aee3ff, #fff, #c9bdff); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ---------- 渐变图标方块（浅蓝 / 浅绿 / 浅紫 + 白色线条） ----------
   统一承载全站 icon：圆角方块 + 柔和渐变 + 内高光 + 同色发光晕 */
.ico-tile {
  --tile-a: #8fb8ff;
  --tile-b: #cf9dff;
  --tile-glow: rgba(46, 107, 255, .28);
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; flex: none;
  border-radius: 14px;
  background: linear-gradient(140deg, var(--tile-a) 0%, var(--tile-b) 100%);
  box-shadow: 0 8px 20px var(--tile-glow), inset 0 1px 0 rgba(255, 255, 255, .55);
  overflow: hidden;
}
/* 左上角柔光高光，模拟玻璃质感 */
.ico-tile::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(120% 90% at 18% 8%, rgba(255, 255, 255, .55) 0%, transparent 58%);
  pointer-events: none;
}
.ico-tile .ico {
  position: relative; z-index: 1;
  width: 24px; height: 24px;
  fill: none; stroke: #fff; stroke-width: 1.7;
  stroke-linecap: round; stroke-linejoin: round;
}
/* 三色变体 */
.ico-tile.blue   { --tile-a: #79a8ff; --tile-b: #a7c8ff; --tile-glow: rgba(46, 107, 255, .3); }
.ico-tile.green  { --tile-a: #4fd6a4; --tile-b: #9ae6c8; --tile-glow: rgba(23, 184, 119, .3); }
.ico-tile.purple { --tile-a: #a68cff; --tile-b: #d0b8ff; --tile-glow: rgba(123, 92, 255, .3); }
.ico-tile.mix    { --tile-a: #6f9dff; --tile-b: #b48cff; --tile-glow: rgba(90, 100, 255, .3); }
.ico-tile.mint   { --tile-a: #64c8f0; --tile-b: #8fe0c6; --tile-glow: rgba(60, 170, 200, .28); }
.ico-tile.lilac  { --tile-a: #b7a4ff; --tile-b: #8ec3ff; --tile-glow: rgba(140, 130, 255, .3); }
/* 尺寸变体 */
.ico-tile.xs { width: 24px; height: 24px; border-radius: 7px; box-shadow: 0 3px 9px var(--tile-glow), inset 0 1px 0 rgba(255, 255, 255, .55); }
.ico-tile.xs .ico { width: 13px; height: 13px; }
.ico-tile.sm { width: 38px; height: 38px; border-radius: 11px; }
.ico-tile.sm .ico { width: 19px; height: 19px; }
.ico-tile.lg { width: 54px; height: 54px; border-radius: 16px; }
.ico-tile.lg .ico { width: 27px; height: 27px; }

section { padding: 62px 0; position: relative; }
section[id] { scroll-margin-top: 60px; }

/* ---------- 科技感基底：细网格 + 光晕 ----------
   全站（除 LOGO 外）统一铺设极淡的科技网格，深浅两套 */
.tech-grid::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background-image:
    linear-gradient(to right, rgba(46, 107, 255, .055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 107, 255, .055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(120% 85% at 50% 40%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(120% 85% at 50% 40%, #000 0%, transparent 78%);
}
.tech-grid > .wrap { position: relative; z-index: 1; }

/* 区块光晕点缀 */
.glow { position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none; z-index: 0; }
.glow-b { background: #d9e8ff; }
.glow-g { background: #d6f6e7; }
.glow-p { background: #e8e0ff; }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s cubic-bezier(.16, .8, .3, 1); }
.reveal.d1 { transition-delay: .12s; }
.reveal.d2 { transition-delay: .24s; }
.reveal.d3 { transition-delay: .36s; }
.reveal.on { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   导航
   ============================================================ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(255, 255, 255, .72);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(255, 255, 255, .85); }
.nav-inner {
  width: min(1060px, 92vw); margin: 0 auto; height: 54px;
  display: flex; align-items: center; gap: 24px;
}
.nav-logo img { height: 29px; width: auto; }
.nav-links { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.nav-links a {
  font-size: 13.5px; font-weight: 500; color: var(--ink-2);
  transition: color .25s ease; position: relative;
}
.nav-links a:hover { color: var(--blue); }
.nav-cta { margin-left: 4px; }
.nav-cta-m { display: none; }
.nav-burger {
  display: none; margin-left: auto; width: 40px; height: 40px;
  border: 0; background: transparent; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 7px;
}
.nav-burger span { display: block; width: 20px; height: 1.8px; background: var(--ink); border-radius: 2px; transition: transform .3s ease, opacity .3s ease; }
.nav.open .nav-burger span:first-child { transform: translateY(4.4px) rotate(45deg); }
.nav.open .nav-burger span:last-child { transform: translateY(-4.4px) rotate(-45deg); }

/* ============================================================
   Hero
   ============================================================ */
.hero { position: relative; padding: 106px 0 40px; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: -1; background: #fff;
}
/* Hero 科技网格 + 光晕 */
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(46, 107, 255, .06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 107, 255, .06) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(115% 90% at 50% 30%, #000 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(115% 90% at 50% 30%, #000 0%, transparent 80%);
}
/* 网格上方漂浮的细光点 */
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(2px 2px at 14% 24%, rgba(46, 107, 255, .55), transparent 60%),
    radial-gradient(2px 2px at 82% 18%, rgba(123, 92, 255, .5), transparent 60%),
    radial-gradient(2px 2px at 68% 74%, rgba(23, 184, 119, .5), transparent 60%),
    radial-gradient(1.6px 1.6px at 28% 82%, rgba(46, 107, 255, .42), transparent 60%),
    radial-gradient(1.6px 1.6px at 92% 56%, rgba(123, 92, 255, .42), transparent 60%);
}
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .6; }
.blob-blue   { width: 500px; height: 500px; left: -130px; top: -120px;  background: #cfe3ff; }
.blob-purple { width: 540px; height: 540px; right: -150px; top: -60px;   background: #ded1ff; }
.blob-green  { width: 440px; height: 440px; left: 34%; bottom: -200px;   background: #cdf3e2; opacity: .55; }

.hero-grid {
  display: grid; grid-template-columns: 1.12fr .88fr;
  align-items: center; gap: 30px;
  width: min(1100px, 92vw); margin: 0 auto;
}
.hero-title {
  font-size: min(2.3vw, 33px);
  font-weight: 700; letter-spacing: -.02em; line-height: 1.25;
  white-space: nowrap;
}
.hero-sub { margin-top: 16px; font-size: clamp(14.5px, 1.4vw, 16.5px); color: var(--gray); max-width: 500px; }
.hero-actions { margin-top: 24px; display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.hero-trust { margin-top: 18px; font-size: 13px; color: var(--gray); }
.hero-trust b { color: var(--blue-deep); }

.hero-visual { position: relative; display: flex; justify-content: center; }
.robot {
  width: min(430px, 100%); height: auto;
  mix-blend-mode: multiply;
  animation: bob 6s ease-in-out infinite;
}
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

.float-card {
  position: absolute; display: flex; flex-direction: column; gap: 1px;
  background: rgba(255, 255, 255, .78);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 15px; padding: 11px 16px;
  box-shadow: 0 14px 32px rgba(29, 60, 142, .13);
  animation: floaty 7s ease-in-out infinite;
}
.fc-num { font-size: 20px; font-weight: 800; letter-spacing: -.02em; line-height: 1.15; }
.fc-label { font-size: 11.5px; color: var(--gray); white-space: nowrap; }
.c-blue { color: var(--blue); } .c-green { color: #0e9663; } .c-purple { color: var(--purple); }
.fc-1 { top: 9%; left: -2%; }
.fc-2 { top: 20%; right: -2%; animation-delay: 1.2s; }
.fc-3 { bottom: 26%; left: -4%; animation-delay: 2.1s; }
.fc-4 { bottom: 12%; right: 2%; animation-delay: 3s; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

.hero-platforms {
  margin-top: 28px; display: flex; align-items: center; justify-content: center;
  gap: 16px; flex-wrap: wrap;
}
.hp-label { font-size: 12.5px; color: var(--gray); font-weight: 600; }
.hp-pills { display: flex; gap: 9px; flex-wrap: wrap; justify-content: center; }
.hp-pills span {
  font-size: 13px; font-weight: 600; color: var(--ink-2);
  background: rgba(255, 255, 255, .85); border: 1px solid var(--line);
  padding: 7px 16px; border-radius: 980px;
  box-shadow: 0 4px 14px rgba(29, 60, 142, .06);
}

/* ============================================================
   01 范式转移（深色）
   ============================================================ */
.shift {
  background:
    linear-gradient(to right, rgba(140, 175, 255, .10) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(to bottom, rgba(140, 175, 255, .10) 1px, transparent 1px) 0 0 / 64px 64px,
    radial-gradient(1200px 600px at 78% -10%, #1d3f8f 0%, transparent 55%),
    radial-gradient(900px 520px at 8% 110%, #14406b 0%, transparent 52%),
    radial-gradient(700px 420px at 50% 120%, rgba(23, 184, 119, .16) 0%, transparent 62%),
    #0a1633;
  color: #fff; text-align: center; position: relative; overflow: hidden;
}
/* 深色区顶部光带 */
.shift::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(140, 190, 255, .7), rgba(170, 140, 255, .6), transparent);
}
.shift::after {
  content: ""; position: absolute; left: 50%; top: -160px; transform: translateX(-50%);
  width: 900px; height: 320px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(110, 168, 255, .28) 0%, transparent 68%);
  filter: blur(40px); pointer-events: none;
}
.shift > .wrap { position: relative; z-index: 1; }
.shift .chip { margin-bottom: 26px; backdrop-filter: blur(6px); }
.shift-title { font-size: clamp(30px, 4.2vw, 52px); font-weight: 700; letter-spacing: -.02em; line-height: 1.14; }
.shift-sub { margin: 18px auto 0; max-width: 740px; color: rgba(235, 242, 255, .78); font-size: clamp(14px, 1.35vw, 16px); }
.shift-stats {
  margin-top: 36px; display: grid;
  grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.s-num {
  font-size: clamp(34px, 3.9vw, 52px); font-weight: 800; letter-spacing: -.03em;
  background: linear-gradient(120deg, #8fc0ff 0%, #d9cbff 60%, #7ce9c3 110%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.s-num em { font-style: normal; font-size: .6em; }
.s-num .pre { font-style: normal; }
.s-stat p { margin-top: 7px; color: rgba(235, 242, 255, .72); font-size: 13.5px; }
.source-note { margin-top: 26px; font-size: 11.5px; color: rgba(235, 242, 255, .45); }

/* ============================================================
   01 痛点
   ============================================================ */
.pains { background: var(--bg-soft); text-align: center; }
.pain-grid {
  margin-top: 30px; display: grid;
  grid-template-columns: repeat(6, 1fr); gap: 18px; text-align: left;
}
.pain-card { grid-column: span 2; }
.pain-card:nth-child(4), .pain-card:nth-child(5) { grid-column: span 3; }
.pain-card {
  position: relative; border-radius: var(--radius); padding: 26px 24px;
  border: 1px solid rgba(255, 255, 255, .9);
  transition: transform .35s ease, box-shadow .35s ease;
  overflow: hidden;
}
/* 卡片右下角同色科技弧光 */
.pain-card::after {
  content: ""; position: absolute; right: -46px; bottom: -46px;
  width: 130px; height: 130px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .95) 0%, transparent 68%);
  pointer-events: none;
}
.pain-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.pain-card .ico-tile { margin-bottom: 14px; }
.pain-card h3 { font-size: 17px; font-weight: 700; }
.pain-card p { margin-top: 8px; font-size: 13.5px; color: var(--ink-2); line-height: 1.68; }
.t-blue { background: linear-gradient(150deg, var(--blue-soft) 0%, #f4f8ff 100%); }
.t-green { background: linear-gradient(150deg, var(--green-soft) 0%, #f4fcf8 100%); }
.t-purple { background: linear-gradient(150deg, var(--purple-soft) 0%, #f7f4ff 100%); }
.t-mix { background: linear-gradient(150deg, #f2f6ff 0%, #f3fbff 50%, #f5f1ff 100%); }
.pain-card.t-purple { background: linear-gradient(150deg, var(--purple-soft) 0%, #f7f4ff 100%); }
.pain-note { margin-top: 26px; font-size: clamp(14.5px, 1.45vw, 16.5px); color: var(--ink-2); font-weight: 600; }
.pain-note b { color: var(--blue); }

/* ============================================================
   02 什么是 GEO
   ============================================================ */
.what { text-align: center; }
.pipeline {
  margin-top: 32px; border-radius: var(--radius);
  background: var(--bg-soft); padding: 30px 24px 34px; text-align: left;
  position: relative; overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .9);
}
/* 管线区科技网格 */
.pipeline::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(46, 107, 255, .05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 107, 255, .05) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, #000, transparent 92%);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 92%);
}
.pipeline > * { position: relative; z-index: 1; }
.pl-head { text-align: center; font-weight: 700; font-size: 14.5px; color: var(--ink-2); margin-bottom: 24px; }
.pl-flow { display: flex; align-items: stretch; gap: 9px; justify-content: center; }
.pl-node {
  flex: 1; min-width: 0; position: relative;
  background: #fff; border: 1px solid var(--line); border-radius: 15px;
  padding: 17px 12px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 7px;
  box-shadow: 0 4px 16px rgba(29, 60, 142, .05);
}
.pl-node b { font-size: 13.5px; line-height: 1.35; }
.pl-node small { color: var(--gray); font-size: 11.5px; line-height: 1.4; }
.pl-arrow { align-self: center; color: #b9bec9; font-size: 17px; font-weight: 700; }
.pl-hot { border: 1.5px solid rgba(46, 107, 255, .45); background: linear-gradient(180deg, #f4f8ff, #fff); box-shadow: 0 8px 24px rgba(46, 107, 255, .14); }
.pl-tag {
  position: absolute; top: -11px; left: 50%; transform: translateX(-50%);
  font-size: 10.5px; font-weight: 700; color: #fff; background: var(--blue);
  padding: 3px 10px; border-radius: 980px; white-space: nowrap;
  box-shadow: 0 4px 12px rgba(46, 107, 255, .35);
}
.pl-final { border: 1.5px solid rgba(23, 184, 119, .5); background: linear-gradient(180deg, #f0fbf6, #fff); box-shadow: 0 8px 24px rgba(23, 184, 119, .13); }

/* 对比表 */
.vs { margin-top: 44px; text-align: left; }
.vs-title { text-align: center; font-size: clamp(17px, 1.9vw, 21px); font-weight: 700; margin-bottom: 26px; }
.vs-table { border-radius: var(--radius); overflow: hidden; box-shadow: 0 10px 34px rgba(29, 60, 142, .08); background: #fff; }
.vs-row { display: grid; grid-template-columns: .8fr 1.1fr 1fr 1.1fr; }
.vs-row + .vs-row { border-top: 1px solid var(--line); }
.vs-cell { padding: 15px 20px; font-size: 13.5px; color: var(--ink-2); }
.vs-head { background: var(--bg-soft); font-weight: 700; color: var(--ink); font-size: 14px; }
.vs-geo { background: var(--blue-soft); color: var(--blue-deep) !important; font-weight: 600; }
.vs-head .vs-geo { color: var(--blue) !important; font-weight: 800; }
.vs-note { margin-top: 18px; text-align: center; color: var(--gray); font-size: 13px; }

/* ============================================================
   02 六步闭环
   ============================================================ */
.loop { background: var(--bg-soft); text-align: center; }
.loop-grid {
  margin-top: 30px; display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 18px; text-align: left;
}
.loop-card {
  background: #fff; border-radius: var(--radius); padding: 24px 22px;
  box-shadow: 0 6px 22px rgba(29, 60, 142, .06);
  transition: transform .35s ease, box-shadow .35s ease; position: relative;
}
.loop-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.loop-no {
  display: inline-flex; align-items: center; justify-content: center;
  width: 33px; height: 33px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: #fff; font-weight: 800; font-size: 15px;
}
.loop-card h3 { margin-top: 14px; font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 7px; }
.loop-card .feed { font-style: normal; color: var(--green); font-size: 17px; }
.loop-card p { margin-top: 8px; font-size: 13.5px; color: var(--ink-2); line-height: 1.68; }
.loop-card small { display: block; margin-top: 12px; padding-top: 10px; border-top: 1px dashed var(--line); color: var(--gray); font-size: 11.5px; }

/* ============================================================
   03 为什么选择鲲腾 GEO
   ============================================================ */
.ability { text-align: center; }
.big-stats {
  margin-top: 30px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  padding: 28px 18px; border-radius: var(--radius);
  background: linear-gradient(120deg, var(--blue-soft) 0%, #fff 38%, #fff 62%, var(--purple-soft) 100%);
}
.b-num { font-size: clamp(31px, 3.6vw, 45px); font-weight: 800; letter-spacing: -.03em; color: var(--blue-deep); }
.b-num em { font-style: normal; font-size: .62em; color: var(--blue); }
.b-stat p { margin-top: 5px; color: var(--gray); font-size: 13.5px; }

.bento { margin-top: 16px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; text-align: left; }
.bento-card {
  position: relative; border-radius: var(--radius); padding: 27px 26px;
  border: 1px solid rgba(255, 255, 255, .9);
  transition: transform .35s ease, box-shadow .35s ease; overflow: hidden;
}
/* 卡片内科技网格 */
.bento-card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(46, 107, 255, .06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(46, 107, 255, .06) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: radial-gradient(90% 80% at 88% 6%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(90% 80% at 88% 6%, #000 0%, transparent 72%);
}
.bento-card > * { position: relative; z-index: 1; }
.bento-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.bento-card h3 { margin-top: 14px; font-size: 17.5px; font-weight: 700; display: flex; align-items: baseline; gap: 9px; flex-wrap: wrap; }
.bento-card h3 small { font-size: 12px; color: var(--gray); font-weight: 600; }
.bento-card ul { margin-top: 11px; }
.bento-card li { position: relative; padding: 6px 0 6px 21px; font-size: 13.5px; color: var(--ink-2); }
.bento-card li::before { content: ""; position: absolute; left: 2px; top: 13px; width: 7px; height: 7px; border-radius: 50%; background: var(--blue); opacity: .55; }
.bento-card.t-green li::before { background: var(--green); }
.bento-card.t-purple li::before { background: var(--purple); }
.bento-note { margin-top: 24px; color: var(--gray); font-size: 13.5px; text-align: center; }

/* ============================================================
   03 内容工程
   ============================================================ */
.content-eng { background: var(--bg-soft); text-align: center; }
.dss { margin-top: 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.dss-card { background: #fff; border-radius: var(--radius); padding: 26px 24px; text-align: left; transition: transform .35s ease, box-shadow .35s ease; }
.dss-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.dss-letter { font-size: 35px; font-weight: 800; line-height: 1; }
.dss-card h3 { margin-top: 12px; font-size: 16px; font-weight: 700; }
.dss-card p { margin-top: 7px; font-size: 13.5px; color: var(--ink-2); line-height: 1.68; }

.layers { margin-top: 20px; display: grid; gap: 13px; text-align: left; }
.layer-row {
  display: grid; grid-template-columns: 150px 1fr auto; align-items: center; gap: 20px;
  background: #fff; border-radius: 16px; padding: 18px 24px;
}
.layer-name b { display: block; font-size: 16px; font-weight: 700; }
.layer-name small { color: var(--gray); font-size: 10.5px; letter-spacing: .12em; }
.layer-row p { font-size: 13.5px; color: var(--ink-2); }
.layer-tag {
  font-size: 11.5px; font-weight: 600; white-space: nowrap;
  padding: 6px 12px; border-radius: 980px;
}
.t-blue .layer-tag, .layer-row .layer-tag { background: var(--bg-soft); color: var(--ink-2); }

.pref { margin-top: 32px; text-align: left; }
.pref-title { text-align: center; font-size: clamp(16.5px, 1.8vw, 20px); font-weight: 700; margin-bottom: 20px; }
.pref-table { border-radius: var(--radius); overflow: hidden; background: #fff; box-shadow: 0 10px 34px rgba(29, 60, 142, .08); }
.pref-row { display: grid; grid-template-columns: 1fr 1.4fr 1.4fr; }
.pref-row + .pref-row { border-top: 1px solid var(--line); }
.pref-row span { padding: 14px 20px; font-size: 13.5px; color: var(--ink-2); }
.pref-head { background: var(--bg-soft); font-weight: 700; color: var(--ink); }
.pref-note { margin-top: 18px; text-align: center; color: var(--gray); font-size: 13px; }

/* ============================================================
   成功案例
   ============================================================ */
.cases { text-align: center; }
.case-grid { margin-top: 30px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; text-align: left; }
.case-card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 21px;
  transition: transform .35s ease, box-shadow .35s ease; background: #fff;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.case-tag { display: inline-block; font-size: 11.5px; font-weight: 700; padding: 5px 12px; border-radius: 980px; }
.case-metric { margin-top: 16px; font-size: 35px; font-weight: 800; letter-spacing: -.03em; color: var(--blue-deep); line-height: 1; }
.case-metric small { font-size: .5em; font-weight: 700; }
.case-card h3 { margin-top: 10px; font-size: 15px; font-weight: 700; }
.case-card p { margin-top: 8px; font-size: 12.8px; color: var(--gray); line-height: 1.68; }

/* ============================================================
   04 服务与保障
   ============================================================ */
.service { background: var(--bg-soft); text-align: center; }
.tiers { margin-top: 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; text-align: left; }
.tier-card {
  background: #fff; border-radius: var(--radius); padding: 28px 26px;
  box-shadow: 0 6px 22px rgba(29, 60, 142, .06); position: relative;
  transition: transform .35s ease, box-shadow .35s ease;
}
.tier-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.tier-card.hot {
  background: linear-gradient(160deg, #10306e 0%, #1b3c8c 60%, #2e6bff 130%);
  color: #fff; transform: scale(1.02);
}
.tier-card.hot .tier-for, .tier-card.hot li { color: rgba(235, 242, 255, .85); }
.tier-card.hot .tier-mode { background: rgba(255, 255, 255, .16); color: #fff; }
.tier-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--green); color: #fff; font-size: 11.5px; font-weight: 700;
  padding: 4px 14px; border-radius: 980px; white-space: nowrap;
  box-shadow: 0 8px 20px rgba(23, 184, 119, .4);
}
.tier-name { font-size: 18.5px; font-weight: 800; }
.tier-for { margin-top: 5px; font-size: 13px; color: var(--gray); }
.tier-card ul { margin-top: 18px; }
.tier-card li { position: relative; padding: 6px 0 6px 23px; font-size: 13.5px; color: var(--ink-2); }
.tier-card li::before { content: "✓"; position: absolute; left: 0; top: 6px; color: var(--green); font-weight: 800; }
.tier-card.hot li::before { color: #7ce9c3; }
.tier-mode {
  display: inline-block; margin-top: 18px; font-size: 12px; font-weight: 700;
  background: var(--blue-soft); color: var(--blue-deep);
  padding: 7px 14px; border-radius: 980px;
}

.promise {
  margin-top: 32px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; text-align: left;
}
.promise-item {
  display: flex; align-items: center; gap: 14px;
  background: #fff; border-radius: 16px; padding: 18px 20px;
  border: 1px solid var(--line);
  box-shadow: 0 6px 22px rgba(29, 60, 142, .06);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.promise-item:hover { transform: translateY(-4px); border-color: rgba(46, 107, 255, .3); box-shadow: 0 12px 30px rgba(29, 60, 142, .12); }
.promise-item h4 { font-size: 14.5px; font-weight: 700; }
.promise-item p { font-size: 12.5px; color: var(--gray); margin-top: 2px; }

.flow { margin-top: 36px; background: #fff; border-radius: var(--radius); padding: 34px 32px; box-shadow: 0 10px 34px rgba(29, 60, 142, .08); }
.flow-title { text-align: center; font-size: clamp(16.5px, 1.8vw, 20px); font-weight: 700; }
.flow-steps { margin-top: 22px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.flow-step { text-align: center; position: relative; padding-top: 6px; }
.flow-step span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 35px; height: 35px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--purple));
  color: #fff; font-weight: 800; font-size: 15px; margin-bottom: 10px;
}
.flow-step b { display: block; font-size: 15px; }
.flow-step p { margin-top: 6px; font-size: 12.5px; color: var(--gray); line-height: 1.62; }
.flow-step:not(:last-child)::after {
  content: "›"; position: absolute; right: -10px; top: 11px;
  font-size: 22px; color: #c9cede; font-weight: 700;
}
.flow-note { margin-top: 28px; text-align: center; color: var(--gray); font-size: 13.5px; }

.inds { margin-top: 30px; text-align: center; }
.inds-label { display: block; font-size: 13px; font-weight: 700; color: var(--gray); letter-spacing: .1em; margin-bottom: 15px; }
.inds-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.inds-tags span {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; font-weight: 600; color: var(--ink-2); background: #fff;
  border: 1px solid var(--line); padding: 5px 15px 5px 6px; border-radius: 980px;
  box-shadow: 0 4px 14px rgba(29, 60, 142, .05);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.inds-tags span:hover { transform: translateY(-3px); border-color: rgba(46, 107, 255, .35); box-shadow: 0 8px 20px rgba(29, 60, 142, .1); }

/* ============================================================
   CTA
   ============================================================ */
.cta {
  background:
    radial-gradient(900px 500px at 15% -20%, rgba(46, 107, 255, .55) 0%, transparent 55%),
    radial-gradient(900px 520px at 90% 120%, rgba(123, 92, 255, .5) 0%, transparent 55%),
    linear-gradient(135deg, #14275e 0%, #1b3c8c 100%);
  color: #fff; text-align: center;
}
.cta-title { font-size: clamp(28px, 3.9vw, 48px); font-weight: 800; letter-spacing: -.02em; line-height: 1.16; }
.cta-sub { margin-top: 15px; font-size: clamp(13.5px, 1.35vw, 15.5px); color: rgba(235, 242, 255, .8); }
.cta-steps { margin-top: 40px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; text-align: left; }
.cta-step {
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .14);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-radius: 17px; padding: 22px 21px;
}
.cta-step span { font-size: 11px; font-weight: 800; letter-spacing: .16em; color: #9cc0ff; }
.cta-step b { display: block; margin-top: 8px; font-size: 15.5px; }
.cta-step p { margin-top: 6px; font-size: 12.5px; color: rgba(235, 242, 255, .72); line-height: 1.68; }
.cta-action { margin-top: 42px; }
.cta-note { margin-top: 13px; font-size: 12.5px; color: rgba(235, 242, 255, .65); }

/* ============================================================
   页脚
   ============================================================ */
.footer { background: var(--bg-soft); padding: 54px 0 32px; }
.footer-top { display: grid; grid-template-columns: 1.2fr 2fr; gap: 50px; }
.f-logo { height: 29px; width: auto; }
.f-slogan { margin-top: 16px; font-size: 16.5px; font-weight: 700; }
.f-desc { margin-top: 10px; font-size: 12.8px; color: var(--gray); line-height: 1.8; }
.footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.f-col h5 { font-size: 12.8px; font-weight: 700; color: var(--ink); margin-bottom: 13px; }
.f-col a { display: block; font-size: 12.8px; color: var(--gray); padding: 4px 0; transition: color .25s ease; }
.f-col a:hover { color: var(--blue); }
.footer-bottom { margin-top: 44px; padding-top: 20px; border-top: 1px solid var(--line); }
.footer-bottom p { font-size: 11.5px; color: #a1a1a6; line-height: 1.8; }
.footer-bottom p + p { margin-top: 5px; }

/* ============================================================
   响应式
   ============================================================ */
.pc-br { display: inline; }
.m-br { display: none; }

@media (max-width: 1080px) {
  .shift-stats { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .promise { grid-template-columns: repeat(2, 1fr); }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .flow-step:not(:last-child)::after { display: none; }
}

@media (max-width: 900px) {
  section { padding: 46px 0; }
  .hero { padding: 88px 0 30px; }
  .hero-title { font-size: 4.5vw; }
  .hero-grid { grid-template-columns: 1fr; gap: 10px; }
  .hero-copy { text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { margin-top: 30px; }
  .fc-1 { left: 0; } .fc-2 { right: 0; } .fc-3 { left: 0; bottom: 20%; } .fc-4 { right: 0; }
  .pain-grid { grid-template-columns: 1fr 1fr; }
  .pain-card, .pain-card:nth-child(4), .pain-card:nth-child(5) { grid-column: auto; }
  .pain-card:last-child { grid-column: 1 / -1; }
  .pl-flow { flex-direction: column; }
  .pl-arrow { transform: rotate(90deg); align-self: center; }
  .loop-grid { grid-template-columns: 1fr 1fr; }
  .bento { grid-template-columns: 1fr; }
  .dss { grid-template-columns: 1fr; }
  .layer-row { grid-template-columns: 1fr; gap: 10px; align-items: start; }
  .tiers { grid-template-columns: 1fr; }
  .tier-card.hot { transform: none; }
  .cta-steps { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }

  /* 移动端导航 */
  .nav-links {
    position: fixed; inset: 60px 0 auto 0;
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: rgba(255, 255, 255, .96);
    -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
    padding: 18px 6vw 26px; border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav.open .nav-links { display: flex; }
  .nav-links a { font-size: 17px; font-weight: 600; padding: 12px 0; width: 100%; }
  .nav-cta-m { display: block; color: var(--blue) !important; }
  .nav-cta { display: none; }
  .nav-burger { display: flex; }
}

@media (max-width: 600px) {
  .pc-br { display: none; }
  .m-br { display: inline; }
  .pain-grid { grid-template-columns: 1fr; }
  .loop-grid { grid-template-columns: 1fr; }
  .big-stats { grid-template-columns: repeat(2, 1fr); gap: 30px 14px; }
  .case-grid { grid-template-columns: 1fr; }
  .shift-stats { grid-template-columns: 1fr 1fr; gap: 34px 14px; }
  .vs-row { grid-template-columns: .7fr 1fr 1fr; }
  .vs-row .vs-cell:nth-child(2) { display: none; }
  .pref-row { grid-template-columns: 1fr 1.2fr; }
  .pref-row span:last-child { display: none; }
  .promise { grid-template-columns: 1fr; }
  .flow { padding: 34px 22px; }
  .flow-steps { grid-template-columns: 1fr; }
  .float-card { padding: 10px 14px; }
  .fc-num { font-size: 18px; }
  .fc-label { font-size: 11px; }
}