/* ============================================================
   Sinntelligence 中国站 · 设计系统 v8 — "Light & Soft"
   ------------------------------------------------------------
   方向回调：用户确认 v5 的调性更合适 —— 明亮、轻快、浅色、柔和。
      页面主体：白 + 极浅绿（#F6F9F6 / #EAF2E9），大量留白
      卡片：纯白 + 圆角 14px + 极柔投影，悬停轻微上浮
      按钮：药丸形（999px），实心绿带柔和投影
      深色只出现在两处：Hero 检测面板、页脚
   品牌绿：饱和度 85% 的翡翠青绿（用户要求「更亮的绿」；
      logo 原始采样 #7BA57E 饱和度仅 19%，屏上发闷）
   禁用：渐变文字 / 大面积深色带 / 大圆角浮空气泡
   ============================================================ */

:root {
  /* ---------- 墨色 ---------- */
  --ink-950:      #060A08;
  --ink-900:      #0A0E0B;   /* 页脚 */
  --ink-850:      #0E1613;   /* Hero 面板 */
  --ink-800:      #16211F;
  --ink:          #111E19;   /* 标题：近黑墨绿 */
  --text:         #4A5A55;   /* 正文：中灰绿 */
  --text-2:       #68786F;   /* 次要 */
  --text-3:       #93A09A;   /* 元信息 */

  /* ---------- 品牌绿（亮翡翠） ---------- */
  --green-bright: #2ECB8A;   /* 纯装饰 / 图形 · 不承载文字 */
  --green:        #0EA85F;   /* 核心绿 · 字标/强调 · 白底 3.1:1 */
  --green-hi:     #4FDD98;   /* 深底上的绿 · 10.9:1 */
  --green-ink:    #0B8349;   /* 白底小字 · 4.8:1 */
  --green-deep:   #0A6E3E;   /* 按钮底 · 白字 6.3:1 */
  --green-deep-2: #0C8449;   /* 按钮 hover */
  --green-display:#14B166;   /* ≥40px 展示字 */
  --green-wash:   #EDF7F0;   /* 极浅绿面 */
  --green-mist:   #D6EDDE;   /* 浅绿边 */

  /* ---------- 表面 ---------- */
  --white:        #FFFFFF;
  --bg:           #FFFFFF;
  --bg-soft:      #FAFCFA;
  --bg-tint:      #F6F9F6;   /* 交替区块底 */
  --bg-green:     #EAF2E9;   /* 浅绿区块底 */

  /* ---------- 线 ---------- */
  --line:         #E6EDE7;
  --line-2:       #EFF4EF;
  --line-3:       #DCE5DD;   /* 输入框 */
  --line-dark:    rgba(232,239,233,.14);
  --line-dark-2:  rgba(232,239,233,.07);

  /* ---------- 深色上的文字 ---------- */
  --on-dark:      #E8EFE9;
  --on-dark-2:    rgba(232,239,233,.68);
  --on-dark-3:    rgba(232,239,233,.45);

  /* ---------- 功能色 ---------- */
  --amber:        #CE8A24;
  --amber-hi:     #F0B45A;
  --amber-soft:   #FDF4E6;

  /* ---------- 排版（中文站禁用 Google Fonts） ---------- */
  --font-sans: 'Inter', 'Helvetica Neue', Helvetica, Arial,
               'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei',
               'Noto Sans CJK SC', system-ui, sans-serif;
  --font-head: var(--font-sans);
  --font-body: var(--font-sans);
  --font-mono: 'SF Mono', 'JetBrains Mono', 'Roboto Mono', Menlo,
               Consolas, 'PingFang SC', monospace;

  /* ---------- 尺寸 ---------- */
  --container: 1240px;
  --pad: 32px;
  --r-xs:  6px;
  --r-sm:  10px;
  --r:     14px;
  --r-lg:  18px;
  --r-xl:  24px;
  --r-pill: 999px;

  /* ---------- 投影（柔和、多层） ---------- */
  --sh-xs:    0 1px 2px rgba(16,32,24,.05);
  --sh-1:     0 1px 3px rgba(16,32,24,.04), 0 4px 12px -6px rgba(16,32,24,.07);
  --sh-2:     0 2px 6px rgba(16,32,24,.04), 0 16px 32px -18px rgba(16,32,24,.16);
  --sh-3:     0 6px 16px -6px rgba(16,32,24,.10), 0 30px 60px -28px rgba(16,32,24,.22);
  --sh-float: 0 12px 28px -12px rgba(9,24,17,.28), 0 44px 88px -40px rgba(9,24,17,.45);
  --sh-btn:   0 6px 16px -6px rgba(10,147,80,.45);
  --sh-chip:  0 2px 6px rgba(16,32,24,.05), 0 10px 24px -12px rgba(16,32,24,.22);
}

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: rgba(46,203,138,.22); }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; border-radius: 4px; }

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

/* 等宽只给拉丁与数字：中文放进 mono + 大字距会被拉散 */
.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   排版
   ============================================================ */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--ink);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.015em;
}
h1 { font-size: clamp(34px, 4.6vw, 52px); }
h2 { font-size: clamp(27px, 3.3vw, 38px); line-height: 1.2; }
h3 { font-size: 19px; font-weight: 700; letter-spacing: -.008em; }
h4 { font-size: 16px; font-weight: 700; }
strong, b { font-weight: 700; color: var(--ink); }

p { color: var(--text); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--green-ink);
  margin-bottom: 20px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1.5px;
  border-radius: 2px;
  background: var(--green-bright);
}
.eyebrow b {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--green);
  opacity: .85;
}

.grad-text { color: var(--green-ink); }

.sec-head { margin-bottom: 46px; }
.sec-head h2 { margin-bottom: 14px; }
.sec-head p { color: var(--text); font-size: 16.5px; max-width: 640px; }
.sec-head--center { text-align: center; max-width: 720px; margin: 0 auto 50px; }
.sec-head--center p { margin: 0 auto; }
.sec-head--center .eyebrow { justify-content: center; }

/* ============================================================
   按钮：药丸形 + 柔和投影
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 26px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .01em;
  white-space: nowrap;
  cursor: pointer;
  transition: background .22s ease, color .22s ease,
              border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}

.btn--solid {
  background: linear-gradient(180deg, #16C173 0%, #0A9A57 100%);
  color: #fff;
  box-shadow: var(--sh-btn);
}
.btn--solid:hover {
  background: linear-gradient(180deg, #1ACE7C 0%, #0BA75F 100%);
  box-shadow: 0 10px 26px -8px rgba(10,147,80,.54);
  transform: translateY(-1px);
}
.btn--solid:active { transform: translateY(0); }

.btn--primary {
  background: #fff;
  color: var(--ink);
  border-color: var(--green-mist);
  box-shadow: var(--sh-xs);
}
.btn--primary:hover {
  border-color: var(--green);
  color: var(--green-ink);
  box-shadow: var(--sh-1);
}

.btn--ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line-3);
  box-shadow: var(--sh-xs);
}
.btn--ghost:hover {
  border-color: var(--green-mist);
  color: var(--green-ink);
  box-shadow: var(--sh-1);
  transform: translateY(-1px);
}

.btn--lg { height: 54px; padding: 0 32px; font-size: 15.5px; }

/* ============================================================
   背景柔光（用 radial-gradient，不用 filter:blur）
   ============================================================ */
.fx {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.fx__orb { position: absolute; border-radius: 50%; }
.fx__orb--a {
  width: 680px; height: 680px;
  top: -300px; right: -180px;
  background: radial-gradient(circle, rgba(46,203,138,.15), rgba(46,203,138,0) 68%);
}
.fx__orb--b {
  width: 560px; height: 560px;
  bottom: -300px; left: -200px;
  background: radial-gradient(circle, rgba(46,203,138,.11), rgba(46,203,138,0) 70%);
}
.fx__orb--c { display: none; }

.fx__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(20,60,44,.032) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(20,60,44,.032) 1px, transparent 1px);
  background-size: 78px 78px;
  -webkit-mask-image: radial-gradient(72% 62% at 50% 26%, #000 0%, rgba(0,0,0,.28) 58%, transparent 82%);
          mask-image: radial-gradient(72% 62% at 50% 26%, #000 0%, rgba(0,0,0,.28) 58%, transparent 82%);
}
.fx__noise { display: none; }

/* ============================================================
   Header
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-2);
}
.header__inner {
  display: flex; align-items: center; gap: 24px;
  height: 72px;
}

.brand { display: inline-flex; align-items: center; margin-right: 8px; }
.brand__img { display: block; height: 36px; width: auto; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative;
  padding: 9px 14px;
  border-radius: var(--r-sm);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--text);
  transition: color .18s, background .18s;
}
.nav a:hover { color: var(--ink); background: var(--green-wash); }
.nav a.is-active { color: var(--green-ink); }
.nav a.is-active::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px; bottom: 0;
  height: 2px; border-radius: 2px;
  background: var(--green);
}

.header__cta { display: flex; align-items: center; gap: 12px; }
.header__cta .btn { height: 42px; padding: 0 22px; font-size: 14px; }

.nav-toggle { display: none; width: 42px; height: 42px; border-radius: var(--r-sm); }
.nav-toggle span {
  display: block; width: 19px; height: 2px; margin: 4px auto;
  border-radius: 2px; background: var(--ink);
  transition: transform .22s, opacity .22s;
}
.header.is-open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.header.is-open .nav-toggle span:nth-child(2) { opacity: 0; }
.header.is-open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============================================================
   Hero —— 明亮、浅色、柔光
   ============================================================ */
.hero {
  position: relative;
  overflow: hidden;
  padding: 74px 0 88px;
  background:
    radial-gradient(920px 540px at 84% -8%, rgba(46,203,138,.14), transparent 62%),
    radial-gradient(720px 500px at 0% 102%, rgba(46,203,138,.10), transparent 60%),
    linear-gradient(180deg, #FFFFFF 0%, #FCFEFC 58%, #F4FAF6 100%);
}
.hero > .container { position: relative; z-index: 2; }

.hero__meta {
  display: flex; align-items: center; gap: 16px;
  padding-bottom: 34px;
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--text-3);
}
.hero__meta-rule { flex: 1; height: 1px; background: var(--line); }
.hero__meta-k { color: var(--green-ink); font-weight: 600; }

.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.06fr);
  gap: 64px;
  align-items: center;
}

/* 副标药丸 */
.hero__sub {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px 8px 15px;
  border-radius: var(--r-pill);
  background: #fff;
  border: 1px solid var(--green-mist);
  box-shadow: var(--sh-xs);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--green-ink);
  margin-bottom: 26px;
}
.hero__sub::before {
  content: '';
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green-bright);
  box-shadow: 0 0 0 3px rgba(46,203,138,.18);
}

.hero h1 {
  font-size: clamp(46px, 6.4vw, 80px);
  line-height: 1.04;
  letter-spacing: -.03em;
  margin-bottom: 26px;
}
.hero h1 .line { display: block; }
.hero h1 .accent { color: var(--green-display); }

.hero__lede {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
  max-width: 460px;
  margin-bottom: 34px;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; }

.hero__strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 76px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}
.hero__strip b {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}
.hero__strip span {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--text-3);
}

/* Hero 右侧：浮空检测面板 */
.hero__visual { position: relative; }
.hero__media {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-850);
  box-shadow: var(--sh-float);
}
.hero__media-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 18px;
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--on-dark-2);
  border-bottom: 1px solid var(--line-dark);
  background: linear-gradient(180deg, rgba(255,255,255,.04), transparent);
}
.hero__media-bar .r { margin-left: auto; color: var(--green-hi); }
.hero__media-bar .live {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green-bright);
  box-shadow: 0 0 0 3px rgba(46,203,138,.22);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .42; }
}

.hero__media-body { position: relative; background: var(--ink-850); }
.hero__media-body svg { width: 100%; height: auto; }

.hero__media-foot {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
  background: linear-gradient(180deg, rgba(255,255,255,.03), transparent);
}
.hero__media-foot > div {
  padding: 14px 18px;
  border-left: 1px solid var(--line-dark);
}
.hero__media-foot > div:first-child { border-left: 0; }
.hero__media-foot span {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  color: var(--on-dark-3);
  margin-bottom: 5px;
}
.hero__media-foot b {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--on-dark);
  font-variant-numeric: tabular-nums;
}
.hero__media-foot b.is-ng { color: var(--amber-hi); }

.hero__media-note {
  display: flex; flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-3);
}
.hero__media-note span { display: inline-flex; align-items: center; gap: 8px; }
.hero__media-note i {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--green-bright);
}

/* 浮空药丸 chip */
.float-chip {
  position: absolute;
  z-index: 3;
  display: inline-flex; align-items: center; gap: 9px;
  padding: 10px 18px 10px 15px;
  border-radius: var(--r-pill);
  background: #fff;
  box-shadow: var(--sh-chip);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}
.float-chip--a { top: -32px; right: -16px; }
.float-chip--b { bottom: -32px; left: -20px; }
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green-bright);
  box-shadow: 0 0 0 3px rgba(46,203,138,.2);
}

/* ============================================================
   客户 Logo 带
   ============================================================ */
.logoband {
  padding: 46px 0 50px;
  background: var(--bg);
  border-bottom: 1px solid var(--line-2);
}
.logoband__label { font-size: 13.5px; color: var(--text-3); margin-bottom: 26px; }
.logoband__row {
  display: flex; flex-wrap: wrap;
  align-items: center;
  gap: 18px 52px;
}
.logoband__row span {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: #9AA6A0;
  transition: color .22s;
}
.logoband__row span:hover { color: var(--ink); }

/* ============================================================
   区块
   ============================================================ */
.section { padding: 96px 0; }
.section--tight { padding: 64px 0; }
.section--panel { background: var(--bg-tint); }
.section--night { background: var(--bg); }

/* ---------- 痛点 ---------- */
.avoid { padding: 96px 0; background: var(--bg); }
.avoid__grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.28fr);
  gap: 64px;
  align-items: start;
}
.avoid__left { position: sticky; top: 108px; }
.avoid__left h2 { margin-bottom: 16px; }
.avoid__left p { font-size: 16px; }

.avoid__list { display: grid; gap: 14px; }
.avoid-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 24px;
  background: #fff;
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  transition: transform .24s ease, box-shadow .24s ease;
}
.avoid-item:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
.avoid-item__icon {
  display: grid; place-items: center;
  width: 46px; height: 46px;
  border-radius: var(--r-sm);
  background: var(--green-wash);
  color: var(--green-ink);
  transition: background .24s, color .24s;
}
.avoid-item__icon svg { width: 22px; height: 22px; }
.avoid-item:hover .avoid-item__icon { background: var(--green-mist); color: var(--green); }
.avoid-item h3 { font-size: 16.5px; margin-bottom: 5px; }
.avoid-item p { font-size: 14.5px; line-height: 1.7; color: var(--text-2); }

/* ---------- 6 类缺陷 ---------- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.cat-grid--4 { grid-template-columns: repeat(4, 1fr); }
.cat-card {
  position: relative;
  padding: 28px 26px 30px;
  background: #fff;
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  display: flex;
  flex-direction: column;
  min-height: 168px;
  transition: transform .24s ease, box-shadow .24s ease;
}
.cat-card:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
.cat-card__num {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--green);
  margin-bottom: auto;
}
.cat-card__num::after {
  content: '';
  flex: 1;
  height: 1px;
  max-width: 34px;
  background: var(--green-mist);
}
.cat-card h3 { font-size: 18px; margin: 22px 0 7px; }
.cat-card p { color: var(--text-2); font-size: 14.5px; line-height: 1.68; }

/* ---------- 三步流程 ---------- */
.steps {
  position: relative;
  overflow: hidden;
  padding: 88px 0 92px;
  background: var(--bg);
}
.steps--light { background: var(--bg-tint); }
.steps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px;
}
.step {
  position: relative;
  padding-top: 26px;
  border-top: 2px solid var(--green-mist);
}
.step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--green);
  margin-bottom: 12px;
}
.step h3 { font-size: 21px; margin-bottom: 10px; }
.step p { font-size: 15px; line-height: 1.75; color: var(--text-2); }
.steps .btn--ghost { margin-top: 40px; }

/* ---------- 数据条 ---------- */
.stats { padding: 72px 0; background: var(--bg); }
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat { padding-left: 24px; border-left: 1px solid var(--line); }
.stat:first-child { padding-left: 0; border-left: 0; }
.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 4vw, 46px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.05;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.stat__num em { font-style: normal; color: var(--green); }
.stat__label { margin-top: 8px; font-size: 14px; color: var(--text-3); }

/* ---------- 差异化 ---------- */
.why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.why-card {
  display: flex;
  flex-direction: column;
  padding: 30px 28px 28px;
  background: #fff;
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  transition: transform .24s ease, box-shadow .24s ease;
}
.why-card:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
.why-card__icon {
  display: grid; place-items: center;
  width: 48px; height: 48px;
  margin-bottom: 20px;
  border-radius: var(--r-sm);
  background: var(--green-wash);
  color: var(--green-ink);
  transition: background .24s, color .24s;
}
.why-card__icon svg { width: 23px; height: 23px; }
.why-card:hover .why-card__icon { background: var(--green-mist); color: var(--green); }
.why-card h3 { font-size: 18.5px; margin-bottom: 9px; }
.why-card p { font-size: 14.8px; line-height: 1.72; color: var(--text-2); }
.why-card__tag {
  align-self: flex-start;
  margin-top: 18px;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: var(--green-wash);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--green-ink);
  white-space: nowrap;
  transition: background .24s;
}
.why-card:hover .why-card__tag { background: var(--green-mist); }

/* ---------- 平台愿景 ---------- */
.vision {
  position: relative;
  overflow: hidden;
  padding: 96px 0;
  background: var(--bg-green);
}
.vision::before {
  content: '';
  position: absolute;
  width: 620px; height: 620px;
  top: -240px; right: -160px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46,203,138,.18), rgba(46,203,138,0) 68%);
  pointer-events: none;
}
.vision__inner { position: relative; max-width: 720px; }
.vision h2 { margin-bottom: 16px; }
.vision h2 em { font-style: normal; color: var(--green); }
.vision p { font-size: 16.5px; line-height: 1.8; color: var(--text); }
.vision .eyebrow { color: var(--green-ink); }

/* ---------- 证言 ---------- */
.testi__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.testi-card {
  padding: 28px 26px;
  background: #fff;
  border-radius: var(--r);
  box-shadow: var(--sh-1);
}
.testi-card blockquote {
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 22px;
}
.testi-card blockquote::before { content: '\201C'; color: var(--green); font-size: 20px; }
.testi-card figcaption { font-size: 13.5px; color: var(--text-3); }
.testi-card figcaption b {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 3px;
}

/* ---------- CTA 带（浅色收尾） ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  padding: 100px 0 104px;
  text-align: center;
  background:
    radial-gradient(760px 420px at 50% 118%, rgba(46,203,138,.16), transparent 66%),
    linear-gradient(180deg, #FFFFFF 0%, #F5FAF6 100%);
  border-top: 1px solid var(--line-2);
}
.cta-band::before {
  content: '';
  position: absolute;
  width: 640px; height: 640px;
  top: -300px; left: 50%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(46,203,138,.13), rgba(46,203,138,0) 68%);
  pointer-events: none;
}
.cta-band > .container { position: relative; z-index: 2; }
.cta-band h2 { font-size: clamp(28px, 3.6vw, 42px); margin-bottom: 14px; }
.cta-band p {
  font-size: 16.5px;
  color: var(--text);
  max-width: 620px;
  margin: 0 auto 34px;
}
.cta-band .hero__cta { justify-content: center; }

/* ============================================================
   页脚（全站唯一深色区）
   ============================================================ */
.footer {
  position: relative;
  background: var(--ink-900);
  color: var(--on-dark-2);
  padding: 68px 0 30px;
  font-size: 14.5px;
}
.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 44px;
  padding-bottom: 44px;
  border-bottom: 1px solid var(--line-dark);
}
.footer__brand .brand__img { height: 32px; }
.footer__brand p {
  margin-top: 16px;
  max-width: 300px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark-3);
}
.footer h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--on-dark);
  margin-bottom: 16px;
}
.footer li { margin-bottom: 10px; }
.footer li a { color: var(--on-dark-2); transition: color .18s; }
.footer li a:hover { color: var(--green-hi); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding-top: 24px;
  font-size: 13px;
  color: var(--on-dark-3);
}
.footer__bottom .eu { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 14px; }

/* ============================================================
   内页 Hero
   ============================================================ */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 76px;
  background:
    radial-gradient(760px 420px at 88% -12%, rgba(46,203,138,.14), transparent 62%),
    linear-gradient(180deg, #FFFFFF 0%, #F5FAF6 100%);
  border-bottom: 1px solid var(--line-2);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { margin-bottom: 18px; max-width: 780px; }
.page-hero p {
  font-size: 17.5px;
  line-height: 1.8;
  color: var(--text);
  max-width: 660px;
}

.crumb {
  display: flex; align-items: center; gap: 10px;
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--text-3);
  margin-bottom: 22px;
}
.crumb a { transition: color .18s; }
.crumb a:hover { color: var(--green-ink); }
.crumb i { font-style: normal; opacity: .5; }

/* ============================================================
   终端演示块（how-it-works）—— 保留深色形成对比
   ============================================================ */
.term {
  border-radius: var(--r);
  overflow: hidden;
  background: var(--ink-850);
  box-shadow: var(--sh-3);
}
.term__bar {
  display: flex; align-items: center; gap: 8px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line-dark);
  background: rgba(255,255,255,.03);
}
.term__dot { width: 10px; height: 10px; border-radius: 50%; }
.term__dot:nth-child(1) { background: #E06A5C; }
.term__dot:nth-child(2) { background: #E5B65A; }
.term__dot:nth-child(3) { background: var(--green-bright); }
.term__title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--on-dark-3);
}
.term__body {
  padding: 22px 20px 24px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 2;
  color: var(--on-dark-2);
  overflow-x: auto;
}
.term__body .cmd { color: var(--on-dark); }
.term__body .cmd::before { content: '$ '; color: var(--green-bright); }
.term__body .ok { color: var(--green-hi); }
.term__body .ng { color: var(--amber-hi); }
.term__body .cursor { animation: blink 1.1s steps(1) infinite; color: var(--green-bright); }
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

/* ============================================================
   表单
   ============================================================ */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.field label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--line-3);
  border-radius: var(--r-sm);
  background: #fff;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
  transition: border-color .18s, box-shadow .18s;
}
.field input::placeholder, .field textarea::placeholder { color: #B4BFB8; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(46,203,138,.16);
}
.field textarea { min-height: 132px; resize: vertical; }
.field select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 42px;
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5 6 6.5l5-5' stroke='%2368786F' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

/* ============================================================
   分栏 / 标签
   ============================================================ */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}
.split--left { grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); }

.tag-row { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-row span {
  padding: 7px 15px;
  border-radius: var(--r-pill);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-xs);
  font-size: 13.5px;
  color: var(--text);
  transition: border-color .2s, color .2s, background .2s;
}
.tag-row span:hover {
  border-color: var(--green-mist);
  color: var(--green-ink);
  background: var(--green-wash);
}

/* ============================================================
   案例
   ============================================================ */
.case-item { padding: 44px 0; border-top: 1px solid var(--line); }
.case-item:first-of-type { border-top: 0; padding-top: 0; }
.case-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.case-meta span {
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: var(--green-wash);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--green-ink);
}
.case-item__body h3 { font-size: 24px; margin-bottom: 12px; }
.case-item__body p { font-size: 15.5px; line-height: 1.8; }

.case-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 26px;
}
.case-metric {
  padding: 20px 22px;
  background: #fff;
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  transition: transform .22s ease, box-shadow .22s ease;
}
.case-metric:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
.case-metric b {
  display: block;
  font-family: var(--font-mono);
  font-size: 25px;
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.case-metric b em { font-style: normal; color: var(--green); }
.case-metric span { display: block; margin-top: 6px; font-size: 13px; color: var(--text-3); }
.case-visual {
  margin-top: 30px;
  border-radius: var(--r);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line-2);
  box-shadow: var(--sh-2);
}
.case-visual svg { width: 100%; height: auto; }

/* ============================================================
   团队
   ============================================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.team-card {
  padding: 28px 26px;
  background: #fff;
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  transition: transform .24s ease, box-shadow .24s ease;
}
.team-card:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
.team-av {
  display: grid; place-items: center;
  width: 54px; height: 54px;
  margin-bottom: 18px;
  border-radius: var(--r-sm);
  background: var(--green-wash);
  color: var(--green-ink);
  font-weight: 800;
  font-size: 18px;
}
.team-card h3 { font-size: 17.5px; margin-bottom: 4px; }
.team-card .role { font-size: 13px; font-weight: 600; color: var(--green-ink); margin-bottom: 12px; }
.team-card p { font-size: 14.5px; line-height: 1.72; color: var(--text-2); }

/* ============================================================
   信息卡 / 规格表 / 清单
   ============================================================ */
.icard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.icard {
  padding: 28px 26px;
  background: #fff;
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  transition: transform .24s ease, box-shadow .24s ease;
}
.icard:hover { transform: translateY(-3px); box-shadow: var(--sh-2); }
.icard h4 { font-size: 16.5px; margin-bottom: 10px; color: var(--green-ink); }
.icard p { font-size: 14.8px; line-height: 1.72; color: var(--text-2); }
.icard a { color: var(--green-ink); font-weight: 600; transition: color .18s; }
.icard a:hover { color: var(--green); }

.spec {
  border-radius: var(--r);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--sh-1);
}
.spec-row {
  display: grid;
  grid-template-columns: minmax(140px, .5fr) minmax(0, 1.5fr);
  gap: 24px;
  padding: 17px 24px;
  border-bottom: 1px solid var(--line-2);
  transition: background .18s;
}
.spec-row:last-child { border-bottom: 0; }
.spec-row:hover { background: var(--bg-soft); }
.spec-row dt { font-size: 14px; font-weight: 600; color: var(--green-ink); }
.spec-row dd { font-size: 14.5px; color: var(--text); }

.check-list { display: grid; gap: 12px; }
.check-list li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--text);
}
.check-list li b { color: var(--ink); }
.check-list svg { width: 20px; height: 20px; margin-top: 4px; color: var(--green); }

/* ============================================================
   滚动入场
   ============================================================ */
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .62s cubic-bezier(.22,.7,.3,1),
              transform .62s cubic-bezier(.22,.7,.3,1);
}
.js .reveal.is-visible { opacity: 1; transform: none; }

.js .icard-grid .reveal:nth-child(2), .js .stats__grid .reveal:nth-child(2),
.js .cat-grid .reveal:nth-child(2), .js .why__grid .reveal:nth-child(2),
.js .testi__grid .reveal:nth-child(2), .js .team-grid .reveal:nth-child(2) { transition-delay: .07s; }
.js .icard-grid .reveal:nth-child(3), .js .stats__grid .reveal:nth-child(3),
.js .cat-grid .reveal:nth-child(3), .js .why__grid .reveal:nth-child(3),
.js .testi__grid .reveal:nth-child(3), .js .team-grid .reveal:nth-child(3) { transition-delay: .14s; }
.js .stats__grid .reveal:nth-child(4), .js .cat-grid .reveal:nth-child(4) { transition-delay: .21s; }
.js .cat-grid .reveal:nth-child(5), .js .team-grid .reveal:nth-child(5) { transition-delay: .28s; }
.js .cat-grid .reveal:nth-child(6), .js .team-grid .reveal:nth-child(6) { transition-delay: .35s; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  :root { --pad: 24px; }
  .hero__inner { grid-template-columns: 1fr; gap: 52px; }
  .hero__lede { max-width: 640px; }
  .hero__visual { max-width: 720px; }
  .float-chip--a { right: 0; }
  .float-chip--b { left: 0; }
  .avoid__grid { grid-template-columns: 1fr; gap: 40px; }
  .avoid__left { position: static; }
  .cat-grid, .cat-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .why__grid, .testi__grid, .team-grid, .icard-grid { grid-template-columns: repeat(2, 1fr); }
  .steps__grid { grid-template-columns: 1fr; gap: 30px; }
  .split, .split--left { grid-template-columns: 1fr; gap: 36px; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
}

@media (max-width: 760px) {
  :root { --pad: 20px; }

  .nav {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    padding: 8px 20px 16px;
    box-shadow: var(--sh-3);
  }
  .header.is-open .nav { display: flex; }
  .nav a {
    padding: 13px 4px;
    border-bottom: 1px solid var(--line-2);
    border-radius: 0;
    font-size: 15.5px;
  }
  .nav a.is-active::after { display: none; }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
  }
  .nav-toggle span { margin: 0; }
  .header__cta .btn { display: none; }
  .brand__img { height: 30px; }

  .hero { padding: 44px 0 60px; }
  .hero__meta { display: none; }
  .hero h1 { font-size: clamp(40px, 11.5vw, 58px); }
  .hero__lede { font-size: 16px; }
  .hero__cta .btn { flex: 1; min-width: 150px; }
  .hero__strip { grid-template-columns: repeat(2, 1fr); gap: 22px 16px; margin-top: 48px; }
  .hero__strip b { font-size: 26px; }
  .hero__media-bar { padding: 11px 13px; font-size: 11px; }
  .hero__media-foot > div { padding: 12px; }
  .hero__media-foot b { font-size: 15px; }
  .float-chip { font-size: 12px; padding: 8px 14px 8px 12px; }
  .float-chip--a { top: -14px; }
  .float-chip--b { bottom: -15px; }

  .logoband { padding: 34px 0 36px; }
  .logoband__row { gap: 14px 30px; }
  .logoband__row span { font-size: 16.5px; }

  .section { padding: 64px 0; }
  .section--tight { padding: 52px 0; }
  .avoid, .vision { padding: 64px 0; }
  .steps { padding: 60px 0 64px; }
  .stats { padding: 52px 0; }
  .cta-band { padding: 68px 0 72px; }
  .page-hero { padding: 48px 0 52px; }

  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 26px 16px; }
  .stat { padding-left: 16px; }
  .stat:nth-child(odd) { border-left: 0; padding-left: 0; }
  .cat-grid, .cat-grid--4, .why__grid, .testi__grid, .team-grid,
  .icard-grid, .case-metrics { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer { padding-top: 52px; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
  .spec-row { grid-template-columns: 1fr; gap: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js .reveal { opacity: 1 !important; transform: none !important; }
}