/* AIEnv 设计系统 v2 —— 2026-06-12 整站视觉升级（排版主导 + UI 卡片 + 微动效）
   源自 preview-hero 原型定稿。全部色值/圆角/阴影走 token，禁止硬编码。
   批1: 首页 + 共享组件；批2: solution 页 + blog 迁入后删除旧 styles.css。 */

:root {
  --bg: #fafaf7;
  /* 旧变量别名（blog 模板与零散旧引用自动适配新 token） */
  --primary: #119368;
  --primary-strong: #0b6b4b;
  --surface: #ffffff;
  --surface-strong: #f3f4ef;
  --text: #0e1813;
  --shadow: 0 1px 2px rgba(14, 24, 19, 0.04), 0 24px 64px rgba(14, 24, 19, 0.1);
  --bg-alt: #f3f4ef;
  --ink: #0e1813;
  --muted: #5c6862;
  --accent: #119368;
  --accent-deep: #0b6b4b;
  --accent-soft: rgba(17, 147, 104, 0.09);
  --accent-line: rgba(17, 147, 104, 0.18);
  --amber: #e8a13d;
  --teal: #0d7d8c;
  --line: rgba(14, 24, 19, 0.08);
  --card: #ffffff;
  --shadow-sm: 0 1px 2px rgba(14, 24, 19, 0.04), 0 8px 24px rgba(14, 24, 19, 0.06);
  --shadow-lg: 0 1px 2px rgba(14, 24, 19, 0.04), 0 24px 64px rgba(14, 24, 19, 0.1);
  --radius: 16px;
  --radius-sm: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  font-family: -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; }

/* ---------- 吸顶导航（header 组件） ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  background: rgba(250, 250, 247, 0.72);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--line);
}
.site-header-inner {
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: 15px clamp(20px, 4vw, 48px);
}
.site-header-inner > .brand { justify-self: start; }
.site-header-inner > .site-nav { justify-self: center; }
.site-header-inner > .nav-toggle { grid-column: 3; justify-self: end; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-mark { width: 34px; height: 34px; border-radius: 9px; background: url("/favicon.svg") center / cover no-repeat; flex: none; }
.brand strong { font-size: 17px; letter-spacing: 0.01em; }
.brand small { display: none; }
.site-nav { display: flex; align-items: center; gap: 34px; font-size: 15px; }
.site-nav a { position: relative; padding: 3px 0; }
.site-nav a.is-current::after { content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 2px; border-radius: 2px; background: var(--accent); }
.site-nav a { color: var(--muted); text-decoration: none; transition: color 0.2s; }
.site-nav a:hover { color: var(--ink); }
.site-nav a.is-current { color: var(--ink); font-weight: 600; }
.nav-cta {
  color: #fff; background: var(--ink); white-space: nowrap;
  padding: 9px 18px; border-radius: 99px; font-weight: 600;
  transition: transform 0.2s, background 0.2s;
}
.nav-cta:hover { background: var(--accent-deep); transform: translateY(-1px); }
.nav-toggle {
  display: none; border: 1px solid var(--line); background: var(--card);
  border-radius: 10px; padding: 8px 14px; font-size: 14px; cursor: pointer;
}

/* ---------- 通用区块 ---------- */
.section { max-width: 1280px; margin: 0 auto; padding: clamp(56px, 8vw, 104px) clamp(20px, 4vw, 48px); }
.section-alt { background: var(--bg-alt); }
.section-alt-full { background: var(--bg-alt); }
.section-heading { max-width: 720px; margin-bottom: clamp(32px, 4vw, 52px); }
.section-heading.center { margin-inline: auto; text-align: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--accent-deep);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  padding: 5px 13px; border-radius: 99px; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
h2 { font-size: clamp(28px, 3.2vw, 40px); line-height: 1.25; letter-spacing: -0.02em; font-weight: 700; }
.section-heading p { margin-top: 14px; color: var(--muted); font-size: clamp(15px, 1.2vw, 17px); line-height: 1.75; }

/* ---------- 按钮 ---------- */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-sm); font-size: 15.5px; font-weight: 600;
  text-decoration: none; cursor: pointer; border: none;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
.button.primary {
  color: #fff; background: var(--ink);
  box-shadow: 0 1px 2px rgba(14, 24, 19, 0.2), 0 8px 24px rgba(14, 24, 19, 0.12);
}
.button.primary:hover { background: var(--accent-deep); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(11, 107, 75, 0.25); }
.button.secondary { color: var(--ink); border: 1.5px solid var(--line); background: rgba(255, 255, 255, 0.6); }
.button.secondary:hover { border-color: var(--ink); transform: translateY(-2px); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(24px, 4vw, 64px);
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(130px, 16vh, 170px) clamp(20px, 4vw, 48px) clamp(56px, 8vw, 96px);
}
.glow { position: absolute; inset: 0; overflow: hidden; z-index: -1; pointer-events: none; }
.glow::before, .glow::after { content: ""; position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5; }
.glow::before {
  width: 720px; height: 720px; left: -200px; top: -160px;
  background: radial-gradient(circle, rgba(17, 147, 104, 0.22), transparent 65%);
  animation: drift1 22s ease-in-out infinite alternate;
}
.glow::after {
  width: 560px; height: 560px; right: -140px; bottom: -120px;
  background: radial-gradient(circle, rgba(232, 161, 61, 0.16), transparent 65%);
  animation: drift2 26s ease-in-out infinite alternate;
}
@keyframes drift1 { to { transform: translate(80px, 60px) scale(1.08); } }
@keyframes drift2 { to { transform: translate(-70px, -50px) scale(1.12); } }

h1, .hero h1 { font-size: clamp(40px, 5.6vw, 72px); line-height: 1.12; letter-spacing: -0.025em; font-weight: 700; }
.hero h1 .accent {
  background: linear-gradient(135deg, var(--accent) 20%, var(--teal) 80%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin-top: 24px; font-size: clamp(16px, 1.4vw, 19px); line-height: 1.75; color: var(--muted); max-width: 34em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px 26px; margin-top: 44px; font-size: 13.5px; color: var(--muted); list-style: none; }
.hero-proof li { display: inline-flex; align-items: center; gap: 7px; }
.hero-proof li::before { content: "✓"; color: var(--accent); font-weight: 700; }

/* ---------- Hero UI 卡片堆 ---------- */
.stage { position: relative; min-height: 560px; }
.uicard {
  position: absolute; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); overflow: hidden;
}
.uicard-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; border-bottom: 1px solid var(--line); background: #fcfcfa;
  font-size: 12.5px; font-weight: 600; color: var(--muted);
}
.dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.card-chat { width: min(380px, 78%); left: 0; top: 28px; z-index: 3; animation: float1 7s ease-in-out infinite; }
.chat-body { padding: 18px 16px; display: grid; gap: 12px; }
.msg { max-width: 82%; padding: 10px 14px; border-radius: var(--radius-sm); font-size: 13px; line-height: 1.6; }
.msg.user { justify-self: end; background: var(--ink); color: #fff; border-bottom-right-radius: 4px; }
.msg.ai { background: var(--accent-soft); color: var(--ink); border-bottom-left-radius: 4px; }
.typing { display: inline-flex; gap: 4px; padding: 12px 14px; background: var(--accent-soft); border-radius: var(--radius-sm); border-bottom-left-radius: 4px; width: fit-content; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: blink 1.3s infinite; }
.typing i:nth-child(2) { animation-delay: 0.2s; }
.typing i:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 70%, 100% { opacity: 0.25; } 35% { opacity: 1; } }
.card-flow { width: min(330px, 70%); right: 0; top: 0; z-index: 2; animation: float2 8s ease-in-out infinite; }
.flow-body { padding: 16px; display: grid; gap: 10px; }
.step { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 13px; }
.step .ic { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; font-size: 13px; color: #fff; background: var(--accent); flex: none; }
.step.doing .ic { background: var(--amber); }
.step.todo .ic { background: #cdd6d1; }
.step small { color: var(--muted); margin-left: auto; font-size: 11.5px; }
.bar { height: 5px; border-radius: 99px; background: rgba(17, 147, 104, 0.12); overflow: hidden; margin-top: 4px; }
.bar i { display: block; height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--accent), var(--teal)); animation: grow 3.2s ease-out infinite alternate; }
@keyframes grow { from { width: 52%; } to { width: 78%; } }
.card-grid { width: min(300px, 64%); left: 12%; bottom: 0; z-index: 4; animation: float3 9s ease-in-out infinite; }
.grid-body { padding: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.grid-body img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 8px; }
.more { display: grid; place-items: center; aspect-ratio: 1; border-radius: 8px; background: var(--accent-soft); color: var(--accent-deep); font-weight: 700; font-size: 14px; }
@keyframes float1 { 0%, 100% { transform: rotate(-2.5deg) translateY(0); } 50% { transform: rotate(-2.5deg) translateY(-10px); } }
@keyframes float2 { 0%, 100% { transform: rotate(2deg) translateY(0); } 50% { transform: rotate(2deg) translateY(-14px); } }
@keyframes float3 { 0%, 100% { transform: rotate(-1deg) translateY(0); } 50% { transform: rotate(-1deg) translateY(-8px); } }
.card-chat { transform: rotate(-2.5deg); }
.card-flow { transform: rotate(2deg); }
.card-grid { transform: rotate(-1deg); }

/* ---------- 判断器 ---------- */
.blocker-layout { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.5fr); gap: 18px; align-items: start; }
.blocker-options { display: grid; gap: 10px; }
.blocker-option {
  display: flex; align-items: center; gap: 12px; text-align: left;
  padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--card); font-size: 15px; font-weight: 600; color: var(--ink);
  cursor: pointer; transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.blocker-option span { font-size: 12px; font-weight: 700; color: var(--accent); }
.blocker-option:hover { transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.blocker-option.is-active { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft), var(--shadow-sm); }
.blocker-panel {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: clamp(22px, 3vw, 32px);
}
.blocker-panel[hidden] { display: none; }
.panel-kicker { font-size: 13px; font-weight: 600; color: var(--accent-deep); margin-bottom: 14px; }
.blocker-path { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 18px; font-size: 12.5px; }
.path-step { padding: 5px 12px; border-radius: 99px; background: var(--bg-alt); color: var(--muted); font-weight: 600; }
.path-step.path-service { background: var(--accent-soft); color: var(--accent-deep); }
.path-step.path-result { background: rgba(232, 161, 61, 0.14); color: #9c6716; }
.path-arrow { color: var(--muted); }
.blocker-panel h3 { font-size: clamp(19px, 2vw, 24px); letter-spacing: -0.01em; margin-bottom: 10px; }
.blocker-panel > p { color: var(--muted); font-size: 14.5px; }
.blocker-result {
  margin-top: 18px; padding: 14px 16px; border-radius: var(--radius-sm);
  background: var(--accent-soft); border: 1px solid var(--accent-line); font-size: 14px;
}
.blocker-result strong { display: block; font-size: 12.5px; color: var(--accent-deep); margin-bottom: 4px; }
.blocker-advice { margin-top: 14px; font-size: 13px; color: var(--muted); }
.inline-cta {
  display: inline-flex; margin-top: 18px; font-weight: 600; font-size: 14.5px;
  color: #fff; background: var(--ink); padding: 11px 20px; border-radius: 10px; text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}
.inline-cta:hover { background: var(--accent-deep); transform: translateY(-1px); }

/* ---------- 三方向卡 ---------- */
.segment-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.segment-card {
  display: flex; flex-direction: column; text-decoration: none; color: inherit;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); overflow: hidden;
  transition: transform 0.25s, box-shadow 0.25s;
}
.segment-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.segment-visual {
  aspect-ratio: 16 / 10; border-bottom: 1px solid var(--line); position: relative; overflow: hidden;
  background: linear-gradient(155deg, #eef4f0 0%, #f6f8f4 58%, #fbfcf9 100%);
  padding: 20px 18px; display: flex; flex-direction: column; justify-content: center;
}
.segment-visual::before {
  content: ""; position: absolute; width: 170px; height: 170px; right: -44px; top: -54px;
  background: radial-gradient(circle, rgba(17, 147, 104, 0.16), transparent 70%); pointer-events: none;
}
.seg-ui { position: relative; display: grid; gap: 8px; }
.seg-chip {
  display: flex; align-items: center; gap: 9px;
  background: var(--card); border: 1px solid var(--line); border-radius: 9px;
  padding: 8px 11px; font-size: 12px; font-weight: 600; color: var(--ink); box-shadow: var(--shadow-sm);
}
.seg-chip .ic {
  width: 22px; height: 22px; border-radius: 6px; flex: none;
  display: grid; place-items: center; font-size: 12px; color: #fff; background: var(--accent);
}
.seg-chip .ic.doing { background: var(--amber); }
.seg-chip .st { margin-left: auto; font-size: 10.5px; font-weight: 600; color: var(--muted); }
.seg-chip .st.live { color: var(--accent-deep); display: flex; align-items: center; gap: 4px; }
.seg-chip .st.live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.seg-bar { height: 5px; border-radius: 99px; background: rgba(17, 147, 104, 0.14); overflow: hidden; margin-top: 2px; }
.seg-bar i { display: block; height: 100%; width: 68%; border-radius: 99px; background: linear-gradient(90deg, var(--accent), var(--teal)); }
.seg-tiles { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.seg-tiles span {
  aspect-ratio: 1; border-radius: 7px; border: 1px solid var(--line);
  background: linear-gradient(135deg, #e7efe9, #d9e6df);
}
.seg-tiles span.v { display: grid; place-items: center; }
.seg-tiles span.v::after { content: "▶"; font-size: 9px; color: var(--accent-deep); }
.seg-tiles span.more {
  border: none; background: var(--accent-soft); display: grid; place-items: center;
  color: var(--accent-deep); font-weight: 700; font-size: 12px;
}
.segment-card h3 { font-size: 18px; margin: 18px 20px 8px; letter-spacing: -0.01em; }
.segment-card p { margin: 0 20px; color: var(--muted); font-size: 14px; line-height: 1.7; flex: 1; }
.segment-more { margin: 16px 20px 20px; font-size: 14px; font-weight: 600; color: var(--accent-deep); }

/* ---------- 流程时间线 ---------- */
.process-list { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; list-style: none; counter-reset: step; }
.process-list li {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 18px 12px 14px; text-align: center;
  font-size: 13.5px; font-weight: 600;
}
.process-list li span {
  display: grid; place-items: center; width: 30px; height: 30px; margin: 0 auto 10px;
  border-radius: 50%; background: var(--accent-soft); color: var(--accent-deep);
  font-size: 12.5px; font-weight: 700;
}

/* ---------- 联系区 ---------- */
.contact-section { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr); gap: clamp(24px, 4vw, 56px); align-items: center; }
.contact-copy h2 { margin-bottom: 14px; }
.contact-copy p { color: var(--muted); font-size: 15.5px; line-height: 1.8; }
.contact-box {
  justify-self: center; width: fit-content;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 24px;
}
.qr-placeholder { width: 240px; height: auto; aspect-ratio: 1; border-radius: var(--radius-sm); border: 1px solid var(--line); margin: 0 auto; object-fit: cover; }
.contact-box .wecom-add { display: flex; width: 240px; margin: 16px auto 0; }

/* ---------- 页脚（footer 组件） ---------- */
.site-footer {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  padding: 30px clamp(20px, 5vw, 64px) 34px;
  border-top: 1px solid var(--line);
  color: var(--muted); font-size: 13px; text-align: center;
}
.footer-brand { color: var(--ink); font-weight: 600; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center; justify-content: center; }
.site-footer a { color: var(--muted); font-weight: 400; text-decoration: none; }
.site-footer a:hover { color: var(--accent-deep); }
.footer-legal .beian-gongan { display: inline-flex; align-items: center; gap: 4px; }

/* ---------- 悬浮按钮 ---------- */
.float-contact {
  position: fixed; right: max(24px, calc((100vw - 1280px) / 2 - 72px)); bottom: 24px; z-index: 60;
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border-radius: 50%;
  background: #07c160; box-shadow: 0 10px 24px rgba(7, 193, 96, 0.35);
  transition: transform 0.2s, background 0.2s;
}
.float-contact:hover { background: #06ad56; transform: scale(1.06); }
.back-to-top {
  position: fixed; right: max(24px, calc((100vw - 1280px) / 2 - 72px)); bottom: 84px; z-index: 60;
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px; border: none; border-radius: 50%;
  background: rgba(14, 24, 19, 0.72); color: #fff; cursor: pointer;
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s, transform 0.2s;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; }
.back-to-top:hover { transform: scale(1.06); }

/* ---------- 入场动画 ---------- */
.fade-up { opacity: 0; transform: translateY(24px); animation: fadeUp 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
.d1 { animation-delay: 0.05s; } .d2 { animation-delay: 0.15s; } .d3 { animation-delay: 0.25s; }
.d4 { animation-delay: 0.35s; } .d5 { animation-delay: 0.5s; }
@keyframes fadeUp { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .fade-up { opacity: 1; transform: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 920px) {
  .site-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 12px clamp(20px, 4vw, 48px) 16px;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 10px 4px; }
  .nav-toggle { display: block; }
  .brand { margin-right: auto; }
  .hero { grid-template-columns: 1fr; padding-top: 104px; }
  .home .hero { grid-template-areas: "copy" "stage" "trust"; }
  .stage { min-height: 520px; margin-top: 12px; }
  .blocker-layout { grid-template-columns: 1fr; }
  .segment-grid { grid-template-columns: 1fr; }
  .process-list { grid-template-columns: repeat(4, 1fr); }
  .contact-section { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .float-contact { right: 12px; bottom: 16px; width: 44px; height: 44px; }
  .back-to-top { right: 12px; bottom: 70px; width: 44px; height: 44px; }
}

/* ---------- Solution 页 ---------- */
.solution-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: clamp(24px, 4vw, 64px);
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(120px, 15vh, 160px) clamp(20px, 4vw, 48px) clamp(48px, 6vw, 80px);
}

.solution-hero h1 { font-size: clamp(32px, 4.2vw, 54px); line-height: 1.18; letter-spacing: -0.02em; }
.solution-hero h1 span { display: block; }

.grad {
  background: linear-gradient(135deg, var(--accent) 20%, var(--teal) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead { margin-top: 20px; font-size: clamp(15px, 1.3vw, 18px); line-height: 1.75; color: var(--muted); max-width: 34em; }
.hero-pain { margin-top: 14px; font-weight: 600; color: var(--accent-deep); }
.hero-lead mark { background: none; color: var(--accent-deep); font-weight: 700; }

.workflow-visual {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 22px 20px;
}

.flow-steps { list-style: none; display: grid; gap: 4px; }
.flow-steps li { display: flex; gap: 14px; align-items: flex-start; padding: 9px 4px; }
.flow-steps strong { font-size: 14.5px; display: block; }
.flow-steps small { color: var(--muted); font-size: 12.5px; }
.flow-dot {
  flex: none; display: grid; place-items: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent-deep);
  font-size: 12.5px; font-weight: 700;
}
.flow-dot-end { background: var(--amber); color: #fff; }

/* —— solution 页深色 hero（套首页 §九 设计语言，深头-浅身-深脚全站一致，2026-06-14）—— */
.dark-hero .solution-hero { color: #eaf2ee; }
.dark-hero .solution-hero::before {
  content: ""; position: absolute; z-index: -2; top: 0; left: 50%; transform: translateX(-50%);
  width: 100vw; height: 100%;
  background: radial-gradient(135% 130% at 82% -20%, #15402e 0%, #103021 26%, #0b2418 48%, #08190f 72%, #060f0b 100%);
}
.dark-hero .solution-hero .eyebrow { color: #7fe9bd; background: rgba(31,190,128,.10); border-color: rgba(31,190,128,.30); }
.dark-hero .solution-hero .eyebrow::before { background: #2ff29a; box-shadow: 0 0 8px #2ff29a; }
.dark-hero .solution-hero h1 { color: #f3faf6; }
.dark-hero .solution-hero .grad { background: linear-gradient(100deg, #2ff29a, #36c9d6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.dark-hero .solution-hero .hero-lead { color: #a8bdb4; }
.dark-hero .solution-hero .hero-lead mark { color: #7fe9bd; }
.dark-hero .solution-hero .button.primary { background: #1fbe80; color: #06120d; box-shadow: 0 12px 32px rgba(31,190,128,.30); }
.dark-hero .solution-hero .button.primary:hover { background: #2ff29a; color: #06120d; }
.dark-hero .solution-hero .button.secondary { color: #eaf2ee; background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.20); }
.dark-hero .solution-hero .button.secondary:hover { border-color: rgba(255,255,255,.45); }
.dark-hero .solution-hero .workflow-visual { background: rgba(18,30,25,.74); border-color: rgba(255,255,255,.10); box-shadow: 0 30px 70px rgba(0,0,0,.5); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.dark-hero .solution-hero .flow-steps strong { color: #eaf2ee; }
.dark-hero .solution-hero .flow-steps small { color: #8aa79b; }
.dark-hero .solution-hero .flow-dot { background: rgba(31,190,128,.18); color: #7fe9bd; }
.dark-hero .solution-hero .flow-dot-end { background: #1fbe80; color: #06120d; }

.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.pain-grid article {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 22px;
}
.pain-grid h3 { font-size: 16.5px; letter-spacing: -0.01em; margin-bottom: 8px; }
.pain-grid p { color: var(--muted); font-size: 14px; line-height: 1.7; }

.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.service-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 22px;
  transition: transform 0.25s, box-shadow 0.25s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.service-card.featured { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft), var(--shadow-sm); }
.card-index { font-size: 12px; font-weight: 700; color: var(--accent); }
.service-card h3 { font-size: 16.5px; margin: 8px 0; letter-spacing: -0.01em; }
.service-card p { color: var(--muted); font-size: 14px; line-height: 1.7; }

.package-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; align-items: stretch; }
.package-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 26px 24px;
}
.package-card.recommended { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft), var(--shadow-lg); }
.package-card .tag {
  position: absolute; top: 16px; right: 16px;
  font-size: 12px; font-weight: 700; color: var(--accent-deep);
  background: var(--accent-soft); border: 1px solid var(--accent-line);
  padding: 4px 11px; border-radius: 99px;
}
.package-card h3 { font-size: 17px; letter-spacing: -0.01em; }
.package-card .price { font-size: clamp(26px, 2.6vw, 34px); font-weight: 700; letter-spacing: -0.02em; margin: 8px 0 10px; color: var(--ink); }
.package-card > p:not(.price) { color: var(--muted); font-size: 14px; line-height: 1.7; }
.package-card ul { list-style: none; margin-top: 16px; display: grid; gap: 9px; font-size: 14px; }
.package-card ul li { display: flex; gap: 8px; align-items: flex-start; }
.package-card ul li::before { content: "✓"; color: var(--accent); font-weight: 700; flex: none; }

.notice {
  margin-top: 22px; padding: 13px 16px; border-radius: var(--radius-sm);
  background: var(--bg-alt); border: 1px solid var(--line);
  color: var(--muted); font-size: 13.5px; line-height: 1.7;
}
.notice a { color: var(--accent-deep); font-weight: 600; }

.case-list { display: flex; flex-wrap: wrap; gap: 10px; }
.case-list span {
  padding: 10px 18px; border-radius: 99px; font-size: 14px; font-weight: 500;
  background: var(--card); border: 1px solid var(--line); box-shadow: var(--shadow-sm);
}

.faq-list { display: grid; gap: 10px; max-width: 860px; }
.faq-list details {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm); padding: 0 20px;
}
.faq-list summary {
  cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center;
  padding: 17px 0; font-size: 15px; font-weight: 600;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; font-size: 20px; color: var(--muted); transition: transform 0.2s; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { padding: 0 0 17px; color: var(--muted); font-size: 14px; line-height: 1.75; }

.page-visual { padding-top: 0; }
.page-visual img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-lg); }

.sample-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.sample-grid img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); }
.sample-note { margin-top: 14px; font-size: 13px; color: var(--muted); text-align: center; }

/* ---------- 响应式（solution） ---------- */
@media (max-width: 920px) {
  .solution-hero { grid-template-columns: 1fr; padding-top: 100px; }
  .pain-grid { grid-template-columns: 1fr; }
  .sample-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
}

/* fixed header 下，以 .section 开头的页面（如 404）首屏让位 */
main > .section:first-child { padding-top: clamp(110px, 14vh, 140px); }

/* 标题断行平衡，消孤儿行（p2，2026-06-12） */
h1, h2, h3 {
  text-wrap: balance;
}

/* ============================================================
   2026-06-13 首页重构（混合方向）：深 hero + 信任条 + 左右交错服务行
   + 深流程带 + 深 CTA + 深页脚。仅首页（body.home）深色 hero。
   ============================================================ */

/* —— 深色 hero（两栏：文案 + 悬浮玻璃卡，信任条满宽收底；全屏出血底 + 网格 + 发光）—— */
.home .hero { color: #eaf2ee; align-items: center;
  grid-template-areas: "copy stage" "trust trust"; row-gap: clamp(28px, 4vw, 48px); }
.home .hero-copy { grid-area: copy; }
.home .hero .stage { grid-area: stage; }
.home .hero .trust-strip { grid-area: trust; margin-top: 8px; }
.home .hero::before {
  content: ""; position: absolute; z-index: -2; top: 0; left: 50%;
  transform: translateX(-50%); width: 100vw; height: 100%;
  background: radial-gradient(135% 120% at 82% -18%, #15402e 0%, #103021 26%, #0b2418 48%, #08190f 72%, #060f0b 100%);
}
/* 发光层全屏出血（修：原来被裁在 1280 宽内，宽屏中间亮两侧暗成竖直接缝）*/
.home .hero .glow { left: 50%; right: auto; transform: translateX(-50%); width: 100vw; }
.home .hero::after {
  content: ""; position: absolute; z-index: -2; top: 0; left: 50%;
  transform: translateX(-50%); width: 100vw; height: 100%; pointer-events: none; opacity: .5;
  background-image: linear-gradient(rgba(120,200,170,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(120,200,170,.06) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(82% 70% at 78% 16%, #000, transparent 78%);
          mask-image: radial-gradient(82% 70% at 78% 16%, #000, transparent 78%);
}
.home .hero .glow::before { background: radial-gradient(circle, rgba(31,190,128,.30), transparent 62%); opacity: .85; }
.home .hero .glow::after  { background: radial-gradient(circle, rgba(54,201,214,.16), transparent 64%); opacity: .7; }
.home .hero .eyebrow { color: #7fe9bd; background: rgba(31,190,128,.10); border-color: rgba(31,190,128,.30); }
.home .hero .eyebrow::before { background: #2ff29a; box-shadow: 0 0 8px #2ff29a; }
.home .hero h1 { color: #f3faf6; max-width: 14em; }
.home .hero h1 .accent { background: linear-gradient(100deg, #2ff29a, #36c9d6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.home .hero .hero-sub { color: #a8bdb4; }
.home .hero .button.primary { background: #1fbe80; color: #06120d; box-shadow: 0 12px 32px rgba(31,190,128,.30); }
.home .hero .button.primary:hover { background: #2ff29a; color: #06120d; }
.home .hero .button.secondary { color: #eaf2ee; background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.20); }
.home .hero .button.secondary:hover { border-color: rgba(255,255,255,.45); }

/* hero 悬浮玻璃卡：深色玻璃发光 */
.home .hero .uicard { background: rgba(18,30,25,.74); border-color: rgba(255,255,255,.10); box-shadow: 0 30px 70px rgba(0,0,0,.5); -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.home .hero .uicard-head { background: rgba(255,255,255,.03); border-bottom-color: rgba(255,255,255,.08); color: #9fb6ac; }
.home .hero .step { background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.08); color: #dcebe4; }
.home .hero .step small { color: #8aa79b; }
.home .hero .step.todo .ic { background: rgba(255,255,255,.20); color: #06120d; }
.home .hero .msg.ai { background: rgba(31,190,128,.16); color: #eaf2ee; }
.home .hero .msg.user { background: #1fbe80; color: #06120d; }
.home .hero .typing { background: rgba(31,190,128,.16); }
.home .hero .bar { background: rgba(31,190,128,.18); }
.home .hero .more { background: rgba(31,190,128,.16); color: #7fe9bd; }

/* 信任条（纯服务质量口径，不提备案/真人）*/
.trust-strip { list-style: none; display: flex; flex-wrap: wrap; gap: 16px 48px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.10); }
.trust-strip li { display: flex; flex-direction: column; gap: 3px; }
.trust-strip strong { font-size: 19px; font-weight: 700; color: #f3faf6; letter-spacing: -.2px; }
.trust-strip span { font-size: 13px; color: #8aa79b; }

/* —— 首页导航：hero 上透明（浅字），滚动出 hero 后浅色实底 —— */
.dark-hero .site-header { background: transparent; border-bottom-color: transparent; }
.dark-hero .site-header .brand strong { color: #f3faf6; }
.dark-hero .site-header .site-nav a { color: rgba(234,242,238,.82); }
.dark-hero .site-header .site-nav a:hover, .dark-hero .site-header .site-nav a.is-current { color: #fff; }
.dark-hero .site-header .nav-cta { background: #1fbe80; color: #06120d; }
.dark-hero .site-header .nav-cta:hover { background: #2ff29a; }
.dark-hero .site-header .nav-toggle { color: #eaf2ee; background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.22); }
.dark-hero .site-header:not(.header-solid) .site-nav.is-open { background: #0a1512; border-bottom-color: rgba(255,255,255,.08); }
.dark-hero .site-header.header-solid { background: rgba(250,250,247,.72); border-bottom-color: var(--line); }
.dark-hero .site-header.header-solid .brand strong { color: var(--ink); }
.dark-hero .site-header.header-solid .site-nav a { color: var(--muted); }
.dark-hero .site-header.header-solid .site-nav a:hover, .dark-hero .site-header.header-solid .site-nav a.is-current { color: var(--ink); }
.dark-hero .site-header.header-solid .nav-cta { background: var(--ink); color: #fff; }
.dark-hero .site-header.header-solid .nav-toggle { color: var(--ink); background: var(--card); border-color: var(--line); }

/* —— 三个服务：左右交错特写行 —— */
.features { max-width: 1180px; margin: 0 auto; padding: clamp(40px,6vw,80px) clamp(20px,4vw,48px); display: grid; gap: clamp(56px,8vw,104px); }
.feat { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px,5vw,72px); align-items: center; }
.feat-rev .feat-copy { order: 2; }
.feat-rev .feat-visual { order: 1; }
.feat-eyebrow { font-size: 14px; font-weight: 700; color: var(--accent-deep); letter-spacing: .02em; }
.feat-copy h2 { font-size: clamp(26px,3vw,38px); font-weight: 800; letter-spacing: -.02em; line-height: 1.18; margin: 14px 0; }
.feat-desc { font-size: clamp(15px,1.3vw,17px); line-height: 1.7; color: var(--muted); margin-bottom: 22px; }
.feat-list { list-style: none; display: grid; gap: 11px; margin-bottom: 28px; }
.feat-list li { display: flex; align-items: center; gap: 11px; font-size: 15px; font-weight: 500; }
.feat-list li::before { content: "✓"; width: 24px; height: 24px; border-radius: 7px; background: var(--accent-soft); color: var(--accent-deep); font-weight: 800; font-size: 13px; display: grid; place-items: center; flex: none; }
.feat-more { display: inline-flex; align-items: center; gap: 8px; font-size: 15.5px; font-weight: 700; color: #fff; background: var(--ink); padding: 13px 24px; border-radius: var(--radius-sm); text-decoration: none; transition: background .2s, transform .2s; }
.feat-more:hover { background: var(--accent-deep); transform: translateY(-2px); }
.feat-visual { position: relative; aspect-ratio: 4/3; border-radius: var(--radius); overflow: hidden; display: grid; place-items: center; padding: 28px;
  background: linear-gradient(150deg, #eef5f0, #deece4); border: 1px solid var(--line); box-shadow: 0 30px 70px rgba(14,24,19,.13); }
.feat-visual::before { content: ""; position: absolute; width: 300px; height: 300px; right: -70px; top: -80px; background: radial-gradient(circle, rgba(17,147,104,.20), transparent 68%); pointer-events: none; }
.fp { position: relative; width: min(80%, 320px); background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-sm); box-shadow: 0 18px 44px rgba(14,24,19,.13); padding: 16px; display: grid; gap: 9px; }
.fp-head { display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 600; color: var(--muted); padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.fp-head .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex: none; }
.fp-media { width: min(84%, 360px); }
.fp-imgs { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.fp-imgs img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 9px; }

/* —— 浅色流程带（深头-浅身-深脚，正文一气呵成）—— */
.process-band { background: var(--bg-alt); color: var(--muted); }
.process-inner { max-width: 1180px; margin: 0 auto; padding: clamp(56px,7vw,84px) clamp(20px,4vw,48px); text-align: center; }
.process-band h2 { color: var(--ink); font-size: clamp(24px,2.6vw,32px); font-weight: 800; letter-spacing: -.02em; margin: 12px 0 44px; }
.proc-steps { list-style: none; display: flex; justify-content: space-between; gap: 14px; max-width: 920px; margin: 0 auto; }
.proc-steps li { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 12px; position: relative; font-size: 15px; font-weight: 600; color: var(--ink); }
.proc-num { width: 44px; height: 44px; border-radius: 13px; background: var(--accent-soft); border: 1px solid var(--accent-line); color: var(--accent-deep); font-weight: 800; display: grid; place-items: center; }
.proc-steps li small { display: block; font-size: 12.5px; font-weight: 400; color: var(--muted); max-width: 12em; margin-top: -2px; }
.proc-steps li::after { content: ""; position: absolute; top: 22px; left: 62%; width: 76%; height: 1px; background: var(--line); }
.proc-steps li:last-child::after { display: none; }

/* —— 浅色 CTA（绿调浅底强调，区别于纯白正文）—— */
.cta-band { background: linear-gradient(150deg, #edf4ef 0%, #e1efe7 100%); color: var(--ink); }
.cta-inner { max-width: 1280px; margin: 0 auto; display: grid; grid-template-columns: minmax(0,1.3fr) minmax(0,.7fr); gap: clamp(28px,4vw,56px); align-items: center; padding: clamp(56px,7vw,88px) clamp(20px,4vw,48px); }
.cta-copy h2 { font-size: clamp(28px,3.4vw,42px); font-weight: 800; letter-spacing: -.02em; line-height: 1.16; margin-bottom: 16px; color: var(--ink); }
.cta-copy p { font-size: clamp(15px,1.3vw,17px); color: var(--muted); line-height: 1.7; max-width: 460px; }

/* —— 深色页脚（全站收口）—— */
.site-footer { background: #0a1512; border-top-color: rgba(255,255,255,.08); color: #8aa79b; }
.site-footer .footer-brand { color: #eaf2ee; }
.site-footer a { color: #8aa79b; }
.site-footer a:hover { color: #2ff29a; }

/* —— 响应式：服务行/流程/CTA 移动端堆叠 —— */
@media (max-width: 860px) {
  .home .hero { grid-template-columns: 1fr; grid-template-areas: "copy" "stage" "trust"; }
  .feat { grid-template-columns: 1fr; gap: 24px; }
  .feat-rev .feat-copy { order: 1; }
  .feat-rev .feat-visual { order: 2; }
  .feat-visual { aspect-ratio: 16/10; }
  .cta-inner { grid-template-columns: 1fr; gap: 28px; }
  .proc-steps { flex-wrap: wrap; gap: 26px 14px; }
  .proc-steps li { flex: 0 0 42%; }
  .proc-steps li::after { display: none; }
}

/* —— 滚动入场动效 —— */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal, .reveal.in { opacity: 1; transform: none; transition: none; } }