/* ============================================================
   科云智达官网 v3 · 极简现代编辑风
   白底为主 · 品牌绿点缀 · 编号排版 · 细线分隔
   ============================================================ */
:root {
  --green: #2E7D32;
  --green-dark: #1B5E20;
  --green-soft: #EAF3EA;
  --ink: #191B19;
  --ink-2: #4A4F4A;
  --ink-3: #8B908B;
  --line: #E4E7E4;
  --bg: #FFFFFF;
  --bg-soft: #F7F8F7;
  --radius: 16px;
  --max: 1140px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: "SF Mono", "Suisse Intl Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { 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: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

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

/* ---------- 顶部导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  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);
}
.header-inner {
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 40px; width: auto; }
.brand-name { font-weight: 700; font-size: 17px; letter-spacing: .02em; }
.brand-name small { display: block; font-weight: 400; font-size: 11px; color: var(--ink-3); letter-spacing: .14em; }
.nav { display: flex; align-items: center; gap: 28px; }
.nav a { font-size: 14.5px; color: var(--ink-2); position: relative; padding: 4px 0; white-space: nowrap; }
.nav a:hover { color: var(--ink); }
.nav a.active { color: var(--green); font-weight: 600; }
.nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--green); border-radius: 2px;
}
.nav-cta {
  background: var(--green) !important; color: #fff !important;
  padding: 9px 18px !important; border-radius: 8px; font-weight: 600 !important;
  transition: background .2s;
}
.nav-cta:hover { background: var(--green-dark) !important; }
.nav-cta::after { display: none !important; }

/* 移动端菜单 */
.menu-btn { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-btn span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; transition: .25s; }
.mobile-nav { display: none; }
@media (max-width: 900px) {
  .nav { display: none; }
  .menu-btn { display: block; }
  .mobile-nav {
    display: none; flex-direction: column;
    border-bottom: 1px solid var(--line); background: #fff;
    padding: 8px 24px 16px;
  }
  .mobile-nav.open { display: flex; }
  .mobile-nav a { padding: 13px 0; font-size: 16px; border-bottom: 1px solid var(--bg-soft); }
  .mobile-nav a.nav-cta { border-bottom: none; text-align: center; margin-top: 10px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 96px 0 88px;
}
.hero-grid-bg {
  position: absolute; inset: -60px; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 75% 68% at 50% 0%, #000 15%, transparent 72%);
  mask-image: radial-gradient(ellipse 75% 68% at 50% 0%, #000 15%, transparent 72%);
  opacity: .55;
  animation: grid-drift 70s linear infinite;
}
@keyframes grid-drift {
  from { transform: translate3d(0,0,0); }
  to   { transform: translate3d(56px, 56px, 0); }
}
.hero .container { position: relative; z-index: 1; }
.hero-split { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 52px; align-items: center; }
.hero-split > div:first-child { min-width:0; }
.hero-split > div:first-child .kicker,
.hero-split > div:first-child h1,
.hero-split > div:first-child .hero-sub,
.hero-split > div:first-child .hero-trust,
.hero-split > div:first-child .hero-actions { max-width:560px; }
.hero-photo {
  border-radius: 22px; overflow: hidden;
  box-shadow: 0 26px 60px rgba(25,27,25,.16);
  transform: rotate(0.6deg);
}
.hero-photo img { width: 100%; height: clamp(320px, 34vw, 450px); object-fit: cover; display: block; }
.hero h1 {
  font-size: clamp(38px, 6.4vw, 68px);
  font-weight: 800; letter-spacing: -0.025em; line-height: 1.18;
  margin: 18px 0 20px;
}
.hero h1 em { font-style: normal; color: var(--green); }
.hero-sub { font-size: clamp(16px, 2.2vw, 20px); color: var(--ink-2); max-width: 640px; }
.hero-actions { display: flex; gap: 14px; margin-top: 36px; flex-wrap: wrap; }
.hero-note { margin-top: 28px; font-size: 13.5px; color: var(--ink-3); letter-spacing: .04em; }
.hero-trust { display:flex; gap:30px; margin-top:30px; padding-top:20px; border-top:1px solid var(--line); }
.hero-trust > div { display:flex; flex-direction:column; gap:2px; }
.hero-trust b { font-size:25px; line-height:1.15; font-weight:800; letter-spacing:-.02em; color:var(--ink); }
.hero-trust b i { font-style:normal; color:var(--green); }
.hero-trust span { font-size:12.5px; color:var(--ink-2); }
.qr-consult-modal { position:fixed; inset:0; z-index:1200; display:none; align-items:center; justify-content:center; padding:20px; background:rgba(18,24,20,.56); }
.qr-consult-modal.open { display:flex; }
.qr-consult-panel { position:relative; width:min(340px,100%); padding:28px 26px 24px; background:#fff; border-radius:20px; box-shadow:0 24px 70px rgba(0,0,0,.24); text-align:center; }
.qr-consult-panel img { display:block; width:220px; height:220px; max-width:100%; margin:0 auto; }
.qr-consult-panel p { margin:16px 0 0; color:var(--ink); font-size:15px; line-height:1.8; }
.qr-consult-close { position:absolute; top:9px; right:13px; border:0; background:none; color:var(--ink-3); font-size:28px; line-height:1; cursor:pointer; }
@media(max-width:640px){.hero-trust{gap:22px;margin-top:24px;padding-top:16px}.hero-trust b{font-size:22px}.qr-consult-panel{width:min(300px,100%);padding:28px 22px 22px}.qr-consult-panel img{width:200px;height:200px}}

/* ---------- 按钮体系 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 10px; font-weight: 600; font-size: 15.5px;
  padding: 14px 28px; transition: all .2s ease; cursor: pointer; border: none;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--ink-3); background: var(--bg-soft); }
.btn-white { background: #fff; color: var(--green-dark); }
.btn-white:hover { transform: translateY(-1px); }
.btn-sm { padding: 10px 20px; font-size: 14px; }

/* ---------- 小标签 / 区块头 ---------- */
.section { padding: 88px 0; }
.section.soft { background: var(--bg-soft); }
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--green); font-size: 13.5px; font-weight: 600; letter-spacing: .12em;
}
.kicker::before { content: ""; width: 22px; height: 2px; background: var(--green); border-radius: 2px; }
.sec-title {
  font-size: clamp(28px, 4.2vw, 44px);
  font-weight: 800; letter-spacing: -0.02em; line-height: 1.25;
  margin: 14px 0 12px;
}
.sec-desc { color: var(--ink-2); font-size: 16.5px; max-width: 620px; }
.sec-head { margin-bottom: 48px; }

/* ---------- 宣言 · 三代论 ---------- */
.era-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  margin-top: 44px;
}
.era {
  padding: 34px 28px; position: relative;
  border-left: 1px solid var(--line);
}
.era:first-child { border-left: none; }
.era-num {
  font-family: var(--mono); font-size: 13px; color: var(--ink-3); letter-spacing: .1em;
}
.era h3 { font-size: 21px; font-weight: 700; margin: 10px 0 6px; }
.era p { font-size: 14.5px; color: var(--ink-2); }
.era-tags { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.era-tag {
  font-size: 12.5px; color: var(--ink-2); background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
}
.era.now { background: var(--green-soft); }
.era.now .era-num, .era.now .era-tag { color: var(--green-dark); }
.era.now .era-tag { background: #fff; border-color: #CBE2CB; }
.era-mark {
  position: absolute; top: 34px; right: 28px;
  font-size: 12px; font-weight: 700; color: var(--green);
  border: 1.5px solid var(--green); border-radius: 999px; padding: 3px 12px;
  background: #fff;
}
.declaration {
  margin-top: 72px; text-align: center;
}
.declaration-line { font-size: 15.5px; color: var(--ink-2); margin: 7px 0; }
.declaration-big {
  margin-top: 30px;
  font-size: clamp(26px, 4.6vw, 46px);
  font-weight: 800; letter-spacing: -0.02em; line-height: 1.35;
}
.declaration-big em { font-style: normal; color: var(--green); }

/* ---------- 编号卡片（三道题等） ---------- */
.num-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.num-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 30px; transition: transform .25s ease, box-shadow .25s ease;
  display: flex; flex-direction: column;
}
.num-card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(25,27,25,.07); }
.num-index {
  font-family: var(--mono); font-size: 15px; color: var(--green);
  letter-spacing: .08em; margin-bottom: 18px;
}
.num-card h3 { font-size: 21px; font-weight: 700; margin-bottom: 10px; }
.num-card p { font-size: 14.5px; color: var(--ink-2); }
.solution-copy { margin-top:18px; padding-top:16px; border-top:1px solid var(--line); }
.solution-copy > b { display:block; margin-bottom:6px; color:var(--green-dark); font-size:13px; }
.solution-copy p { margin:0; font-size:14px; line-height:1.8; color:var(--ink-2); }
.num-pain { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.num-pain span {
  font-size: 12.5px; color: #A94136; background: #FBF0EF;
  border-radius: 999px; padding: 4px 12px;
}

/* ---------- 命题条（一条主线） ---------- */
.thread-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.thread {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 30px; display: flex; flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}
.thread:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(25,27,25,.07); }
.thread-top { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 18px; }
.thread-top h3 { font-size: 22px; font-weight: 800; letter-spacing: -0.01em; }
.thread-top .no { font-family: var(--mono); font-size: 13px; color: var(--ink-3); }
.thread ul { margin: 0 0 22px; }
.thread li {
  font-size: 14.5px; color: var(--ink-2); padding: 7px 0 7px 20px; position: relative;
  border-bottom: 1px dashed var(--line);
}
.thread li:last-child { border-bottom: none; }
.thread li::before {
  content: ""; position: absolute; left: 2px; top: 15px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--green);
}
.thread-link {
  margin-top: auto; font-size: 14.5px; font-weight: 600; color: var(--green);
  display: inline-flex; align-items: center; gap: 6px;
}
.thread-link:hover { color: var(--green-dark); }

/* ---------- 四件工具 ---------- */
.tool-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.tool-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 36px 34px; display: flex; flex-direction: column; gap: 12px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  position: relative; overflow: hidden;
}
.tool-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(25,27,25,.08); border-color: #CBE2CB; }
.tool-head { display: flex; align-items: center; justify-content: space-between; }
.tool-index { font-family: var(--mono); font-size: 14px; color: var(--ink-3); letter-spacing: .08em; }
.tool-status {
  font-size: 12px; font-weight: 700; border-radius: 999px; padding: 4px 13px; letter-spacing: .05em;
}
.tool-status.on { color: #fff; background: var(--green); }
.tool-status.new { color: var(--green-dark); background: var(--green-soft); border: 1px solid #CBE2CB; }
.tool-card h3 { font-size: 23px; font-weight: 800; letter-spacing: -0.01em; }
.tool-card .tagline { font-size: 15px; color: var(--green-dark); font-weight: 600; }
.tool-card p { font-size: 14.5px; color: var(--ink-2); }
.tool-points { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.tool-points span {
  font-size: 12.5px; color: var(--ink-2); background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px;
}
.tool-link { margin-top: auto; padding-top: 14px; font-size: 14.5px; font-weight: 600; color: var(--green); display: inline-flex; align-items: center; gap: 6px; }
.tool-card:hover .tool-link { color: var(--green-dark); }

/* ---------- 信任状 + CTA ---------- */
.trust-row {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
}
.trust { padding: 38px 28px; border-left: 1px solid var(--line); }
.trust:first-child { border-left: none; }
.trust b { display: block; font-size: clamp(30px, 4vw, 42px); font-weight: 800; letter-spacing: -0.02em; color: var(--ink); }
.trust b i { font-style: normal; color: var(--green); }
.trust span { font-size: 14px; color: var(--ink-2); }
.cta-band {
  margin-top: 64px; background: var(--green-dark); border-radius: 20px;
  padding: 60px 48px; color: #fff; text-align: center; position: relative; overflow: hidden;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 70% 90% at 50% 100%, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 90% at 50% 100%, #000 20%, transparent 75%);
}
.cta-band > * { position: relative; }
.cta-band h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; letter-spacing: -0.02em; }
.cta-band p { margin: 12px 0 30px; color: rgba(255,255,255,.82); font-size: 16px; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); padding: 52px 0 40px; background: #fff; }
.footer-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.footer-brand img { height: 44px; margin-bottom: 14px; }
.footer-brand p { font-size: 13.5px; color: var(--ink-3); max-width: 300px; }
.footer-col h4 { font-size: 14px; font-weight: 700; margin-bottom: 14px; }
.footer-col a, .footer-col span { display: block; font-size: 13.5px; color: var(--ink-2); padding: 5px 0; }
.footer-col a:hover { color: var(--green); }
.footer-bottom {
  margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  font-size: 12.5px; color: var(--ink-3);
}

/* ---------- 悬浮 AI 助手 ---------- */
.ai-fab {
  position: fixed; right: 22px; bottom: 26px; z-index: 200;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--green); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 15px; letter-spacing: .02em;
  box-shadow: 0 10px 26px rgba(46,125,50,.38);
  transition: transform .2s ease, background .2s ease;
}
.ai-fab:hover { transform: translateY(-3px); background: var(--green-dark); }
.ai-fab small {
  position: absolute; right: 66px; white-space: nowrap;
  background: var(--ink); color: #fff; font-size: 12px; font-weight: 500;
  padding: 6px 12px; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .2s;
}
.ai-fab:hover small { opacity: 1; }

/* ---------- 页内 hero（子页） ---------- */
.page-hero { padding: 72px 0 56px; position: relative; overflow: hidden; }
.page-hero .crumb { font-family: var(--mono); font-size: 13px; color: var(--ink-3); letter-spacing: .08em; }
.page-hero h1 { font-size: clamp(32px, 5vw, 54px); font-weight: 800; letter-spacing: -0.025em; margin: 12px 0 14px; }
.page-hero h1 em { font-style: normal; color: var(--green); }
.page-hero .lead { font-size: clamp(15.5px, 2vw, 18.5px); color: var(--ink-2); max-width: 640px; }

/* ---------- 通用卡片网格（终端/卖点/功能） ---------- */
.card-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.info-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 30px; display: flex; flex-direction: column; gap: 10px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.info-card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(25,27,25,.07); }
.info-card .ico {
  width: 46px; height: 46px; border-radius: 12px; background: var(--green-soft);
  color: var(--green-dark); display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 800; margin-bottom: 6px;
}
.info-card h3 { font-size: 19px; font-weight: 700; }
.info-card p { font-size: 14px; color: var(--ink-2); }
.info-card .sub { font-size: 13px; color: var(--ink-3); }

/* ---------- 视频卡 ---------- */
.video-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
}
.video-card video { width: 100%; aspect-ratio: 16/9; object-fit: contain; background: #000; display: block; }
.video-info { padding: 20px 22px 24px; }
.video-info h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.video-info p { font-size: 13.5px; color: var(--ink-2); }

/* ---------- 联系卡 ---------- */
.contact-card {
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 20px;
  padding: 48px; display: grid; grid-template-columns: 1fr auto; gap: 44px; align-items: center;
}
.contact-card h2 { font-size: clamp(24px, 3.4vw, 34px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 10px; }
.contact-card p { color: var(--ink-2); font-size: 15px; max-width: 480px; }
.contact-points { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; }
.contact-points span {
  font-size: 13px; color: var(--green-dark); background: #fff;
  border: 1px solid #CBE2CB; border-radius: 999px; padding: 6px 16px; font-weight: 600;
}
.qr-box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; text-align: center; }
.qr-box img { width: 168px; height: 168px; object-fit: cover; border-radius: 10px; }
.qr-box p { font-size: 13px; color: var(--ink-2); margin-top: 10px; }

/* ---------- 占位素材框 ---------- */
.placeholder {
  border: 1.5px dashed #C4CCC4; border-radius: var(--radius);
  background: var(--bg-soft); color: var(--ink-3);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 8px; text-align: center; padding: 40px 20px;
}
.placeholder b { font-size: 14px; color: var(--ink-2); font-weight: 600; }
.placeholder span { font-size: 12.5px; }

/* ---------- iframe 3D ---------- */
.viewer-frame {
  border: 1px solid var(--line); border-radius: 20px; overflow: hidden;
  background: #ECEFEC; position: relative;
}
.viewer-frame iframe { width: 100%; height: 560px; border: 0; display: block; }
.viewer-tip {
  position: absolute; left: 14px; bottom: 14px;
  background: rgba(25,27,25,.78); color: #fff; font-size: 12.5px;
  padding: 8px 14px; border-radius: 999px; backdrop-filter: blur(6px);
}

/* ---------- 情境图带（全宽出血，杂志风转场） ---------- */
.image-band { position: relative; overflow: hidden; }
.image-band img { width: 100%; height: clamp(300px, 44vw, 480px); object-fit: cover; display: block; }
.image-band .band-tag {
  position: absolute; top: 26px; left: 26px;
  background: rgba(255,255,255,.92); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  color: var(--green-dark); font-size: 13px; font-weight: 700;
  padding: 8px 18px; border-radius: 999px; letter-spacing: .1em;
}
.image-band .band-cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 60px 26px 22px;
  background: linear-gradient(transparent, rgba(20,32,20,.55));
  color: #fff; font-size: 14.5px; letter-spacing: .06em;
}

/* ---------- 卡片顶图（工具卡 / 命题卡） ---------- */
.card-cover {
  width: 100%; aspect-ratio: 16/9; object-fit: cover;
  border-radius: 12px; margin-bottom: 18px; display: block;
}

/* ---------- 历史照片卡（container 内圆角图） ---------- */
.photo-card {
  position: relative; overflow: hidden; border-radius: 16px;
  box-shadow: 0 14px 34px rgba(25,27,25,.1);
}
.photo-card img { width: 100%; height: clamp(220px, 30vw, 330px); object-fit: cover; display: block; }
.photo-card .band-tag { top: 20px; left: 20px; }
.photo-card .band-cap { padding: 56px 24px 18px; }

/* ---------- 历史照片卡 结束 ---------- */
/* ---------- 信任状（照片背景 + 深绿遮罩） ---------- */
.trust-hero {
  background: linear-gradient(rgba(20,50,24,.88), rgba(20,50,24,.88)), url('photos/c2.jpg') center/cover no-repeat;
  border-radius: 20px; overflow: hidden; padding: 10px 10px 0;
}
.trust-hero .trust-row { border: none; }
.trust-hero .trust { border-color: rgba(255,255,255,.16); color: #fff; }
.trust-hero .trust b { color: #fff; }
.trust-hero .trust b i { color: #A5D6A7; }
.trust-hero .trust span { color: rgba(255,255,255,.72); }
@media (max-width: 960px) {
  .trust-hero { padding: 6px 6px 0; }
  .image-band img { height: 260px; }
}

/* ---------- 子页 Hero 照片背景（左侧白渐变保可读，图片可换） ---------- */
.page-hero.with-photo {
  position: relative;
  --ph: url('photos/a2.jpg');
  background:
    linear-gradient(90deg, rgba(255,255,255,.97) 0%, rgba(255,255,255,.86) 42%, rgba(255,255,255,.30) 100%),
    var(--ph) center right/cover no-repeat;
}
.page-hero.ph-b2 { --ph: url('photos/b2.jpg'); }
.page-hero.ph-c3 { --ph: url('photos/c3.jpg'); }
.page-hero.ph-a3 { --ph: url('photos/a3.jpg'); }
@media (max-width: 960px) {
  .page-hero.with-photo {
    background:
      linear-gradient(rgba(255,255,255,.93), rgba(255,255,255,.93)),
      var(--ph) center/cover no-repeat;
  }
}

/* ---------- 管理法页 ---------- */
.method-block { padding: 56px 0; border-bottom: 1px solid var(--line); }
.method-block:last-of-type { border-bottom: none; }
.method-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 34px; }
.method-head .big-no {
  font-family: var(--mono); font-size: clamp(30px, 4vw, 44px);
  color: var(--green); font-weight: 700; letter-spacing: .02em;
}
.method-head h2 { font-size: clamp(26px, 3.6vw, 38px); font-weight: 800; letter-spacing: -0.02em; }
.method-grid { display: grid; grid-template-columns: 1fr 320px; gap: 20px; align-items: stretch; }
.method-steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.method-step {
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 22px 24px;
}
.method-step b { display: block; font-size: 16.5px; font-weight: 700; margin-bottom: 5px; }
.method-step span { font-size: 13.5px; color: var(--ink-2); }
.method-tool {
  background: var(--green-dark); color: #fff; border-radius: 14px; padding: 28px 26px;
  display: flex; flex-direction: column; justify-content: space-between; gap: 16px;
}
.method-tool .lab { font-size: 12px; letter-spacing: .14em; color: rgba(255,255,255,.66); font-weight: 600; }
.method-tool h3 { font-size: 20px; font-weight: 800; }
.method-tool p { font-size: 13.5px; color: rgba(255,255,255,.8); }
.method-tool a {
  align-self: flex-start; background: #fff; color: var(--green-dark);
  font-size: 14px; font-weight: 700; padding: 10px 20px; border-radius: 9px;
}
.method-tool a:hover { background: var(--green-soft); }

/* ---------- 商城 ---------- */
.cat-strip { display: flex; flex-wrap: wrap; gap: 10px; }
.cat-strip span {
  font-size: 14px; color: var(--ink-2); border: 1px solid var(--line);
  border-radius: 999px; padding: 9px 20px; background: #fff;
}
.cat-strip span.hot { color: #fff; background: var(--green); border-color: var(--green); font-weight: 600; }
.device-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column; transition: transform .25s ease, box-shadow .25s ease;
}
.device-card:hover { transform: translateY(-4px); box-shadow: 0 14px 34px rgba(25,27,25,.07); }
.device-img { aspect-ratio: 4/3; }
.device-body { padding: 26px 28px 30px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.device-body h3 { font-size: 19px; font-weight: 700; }
.device-body p { font-size: 14px; color: var(--ink-2); }
.device-foot { margin-top: auto; padding-top: 16px; display: flex; align-items: center; justify-content: space-between; }
.device-status { font-size: 12.5px; font-weight: 700; color: var(--green-dark); background: var(--green-soft); border-radius: 999px; padding: 5px 14px; }
.trade-note {
  border-top: 1px solid var(--line); margin-top: 56px; padding-top: 40px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.trade-note b { display: block; font-size: 16px; margin-bottom: 6px; }
.trade-note span { font-size: 13.5px; color: var(--ink-2); }

/* ---------- 进场动画（锦上添花：无 JS 时内容默认可见） ---------- */
html:not(.no-js) .reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity .7s ease, transform .7s ease;
}
html:not(.no-js) .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html:not(.no-js) .reveal { opacity: 1; transform: none; transition: none; }
  .hero-grid-bg { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 博客列表 ---------- */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.post-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease;
}
.post-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(25,27,25,.09); }
.post-cover { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
.post-body { padding: 24px 26px 28px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.post-cat { font-size: 12.5px; font-weight: 700; color: var(--green); letter-spacing: .1em; }
.post-card h3 { font-size: 19px; font-weight: 800; line-height: 1.45; letter-spacing: -0.01em; }
.post-card p { font-size: 13.5px; color: var(--ink-2); }
.post-meta { margin-top: auto; padding-top: 14px; font-size: 12.5px; color: var(--ink-3); border-top: 1px dashed var(--line); }
.blog-more { text-align: center; margin-top: 44px; color: var(--ink-3); font-size: 14px; }

/* ---------- 文章详情 ---------- */
.post-wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.post-wrap .post-hero-cat { font-size: 13px; font-weight: 700; color: var(--green); letter-spacing: .12em; }
.post-wrap h1 { font-size: clamp(28px, 4.4vw, 42px); font-weight: 800; letter-spacing: -0.02em; line-height: 1.35; margin: 14px 0 16px; }
.post-wrap .post-hero-meta { font-size: 13.5px; color: var(--ink-3); padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.post-content { padding: 36px 0 10px; font-size: 16.5px; line-height: 1.95; color: var(--ink); }
.post-content p { margin: 0 0 20px; }
.post-content h2 { font-size: 22px; font-weight: 800; margin: 40px 0 16px; letter-spacing: -0.01em; }
.post-content h2::before { content: "/ "; color: var(--green); }
.post-content blockquote {
  margin: 26px 0; padding: 18px 24px; background: var(--green-soft);
  border-left: 3px solid var(--green); border-radius: 0 12px 12px 0;
  color: var(--green-dark); font-weight: 600; font-size: 15.5px;
}
.post-content ul { margin: 0 0 20px; padding-left: 4px; }
.post-content ul li { padding: 5px 0 5px 22px; position: relative; }
.post-content ul li::before { content: ""; position: absolute; left: 2px; top: 15px; width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
.post-cta {
  margin: 46px 0 60px; background: var(--green-dark); color: #fff;
  border-radius: 16px; padding: 34px 36px; display: flex;
  align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.post-cta b { font-size: 18px; }
.post-cta p { margin: 4px 0 0; font-size: 13.5px; color: rgba(255,255,255,.78); }
.post-nav { display: flex; justify-content: space-between; padding: 26px 0 60px; border-top: 1px solid var(--line); }
.post-nav a { font-size: 14.5px; color: var(--ink-2); }
.post-nav a:hover { color: var(--green); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .num-grid, .thread-row, .card-grid-3, .card-grid-4, .method-grid { grid-template-columns: 1fr; }
  .post-grid { grid-template-columns: 1fr; }
  .hero-split { grid-template-columns: 1fr; gap: 36px; }
  .hero-photo img { height: 300px; }
  .era-row, .trust-row { grid-template-columns: 1fr; }
  .era, .trust { border-left: none; border-top: 1px solid var(--line); }
  .era:first-child, .trust:first-child { border-top: none; }
  .tool-grid, .card-grid-2 { grid-template-columns: 1fr; }
  .method-steps { grid-template-columns: 1fr; }
  .contact-card { grid-template-columns: 1fr; text-align: center; }
  .contact-card p { margin: 0 auto; }
  .contact-points { justify-content: center; }
  .qr-box { margin: 0 auto; }
  .trade-note { grid-template-columns: 1fr; }
  .viewer-frame iframe { height: 420px; }
  .section { padding: 64px 0; }
  .hero { padding: 68px 0 60px; }
  .cta-band { padding: 44px 26px; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: 34px; }
  .header-inner { height: 58px; }
  .brand img { height: 34px; }
}

/* ---------- 服务报价 ---------- */
.report-feature { background:var(--green-soft); border:1px solid #CBE2CB; border-radius:20px; padding:42px 46px; }
.report-copy { max-width:820px; margin:0 auto; }
.report-copy h2 { margin:12px 0 10px; font-size:clamp(24px,3.6vw,36px); line-height:1.3; font-weight:800; }
.report-copy > p { max-width:740px; color:var(--ink-2); font-size:15.5px; line-height:1.9; }
.report-flow { display:flex; align-items:center; flex-wrap:wrap; gap:12px; margin-top:22px; }
.report-flow span { padding:8px 14px; border-radius:999px; background:#fff; color:var(--green-dark); font-size:13px; font-weight:600; }
.report-flow b { color:var(--green); font-size:16px; }
@media(max-width:640px){.report-feature{padding:28px 22px}.report-flow{gap:8px}.report-flow span{font-size:12px;padding:7px 10px}.report-efficiency{padding:16px}.report-efficiency-head{align-items:flex-start;flex-direction:column}.report-efficiency-head h3{font-size:18px}.report-compare{grid-template-columns:1fr;gap:8px}.report-compare-arrow{height:18px;transform:rotate(90deg)}.report-compare-card{padding:15px}.report-saving{align-items:flex-start;flex-direction:column;gap:2px}.report-saving b{font-size:21px}.report-estimate-note{font-size:10.5px}}
.report-efficiency{margin-top:28px;padding:24px;background:rgba(255,255,255,.74);border:1px solid #CBE2CB;border-radius:16px}
.report-efficiency-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px}
.report-mini-label{font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--green)}
.report-efficiency-head h3{margin-top:6px;font-size:20px;line-height:1.45;font-weight:800;color:var(--ink)}
.report-efficiency-tag{flex:none;padding:8px 13px;border-radius:999px;background:var(--green);color:#fff;font-size:12px;font-weight:700}
.report-compare{display:grid;grid-template-columns:1fr 42px 1fr;align-items:stretch;gap:10px}
.report-compare-card{padding:18px 20px;border-radius:12px;background:#F5F7F5;border:1px solid #E2E9E3}
.report-compare-ai{background:#EAF3EA;border-color:#CBE2CB}
.report-compare-label{display:block;font-size:12px;color:var(--ink-2);font-weight:700}
.report-compare-card strong{display:block;margin-top:8px;color:var(--ink);font-size:30px;line-height:1.25;font-weight:800}
.report-compare-ai strong{color:var(--green-dark)}
.report-compare-card strong span{margin-left:7px;font-size:14px;font-weight:700}
.report-compare-card p{margin-top:6px;font-size:12px;line-height:1.55;color:var(--ink-2)}
.report-compare-arrow{display:flex;align-items:center;justify-content:center;color:var(--green);font-size:24px;font-weight:800}
.report-saving{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-top:16px;padding:14px 18px;border-radius:12px;background:#173F2D;color:#fff}
.report-saving b{font-size:23px;font-weight:800}
.report-saving span{font-size:12px;color:rgba(255,255,255,.82)}
.report-estimate-note{margin-top:12px;font-size:11px;line-height:1.7;color:#66736B}
.report-examples{margin-top:34px;padding-top:28px;border-top:1px solid #CBE2CB}
.report-examples-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:20px}
.report-examples-head h3{margin-top:8px;font-size:21px;font-weight:800;color:var(--ink)}
.report-examples-head p{margin-top:5px;font-size:13.5px;color:var(--ink-2)}
.report-sample-badge{flex:none;padding:7px 12px;border-radius:999px;background:#fff;color:var(--green-dark);font-size:11.5px;font-weight:700}
.report-image-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.report-image-grid a{display:block;min-width:0;border:1px solid #D8E5DA;border-radius:12px;overflow:hidden;background:#fff;transition:transform .2s ease,box-shadow .2s ease}
.report-image-grid a:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(25,27,25,.1)}
.report-image-grid img{display:block;width:100%;aspect-ratio:1600/2200;object-fit:cover;object-position:top}
.report-image-grid a>span{display:block;padding:10px 12px;font-size:12.5px;font-weight:700;color:var(--green-dark)}
@media(max-width:760px){.report-examples-head{align-items:flex-start;flex-direction:column;gap:10px}.report-image-grid{grid-template-columns:1fr;gap:12px}.report-image-grid a{display:grid;grid-template-columns:100px 1fr;align-items:center}.report-image-grid img{width:100px;height:138px;aspect-ratio:auto;object-fit:cover;object-position:top}.report-image-grid a>span{padding:12px}}

.price-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.price-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 24px 20px; position: relative; display: flex; flex-direction: column; gap: 4px; }
.price-card .badge { position: absolute; top: -11px; right: 16px; background: var(--green); color: #fff; font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; }
.price-card h3 { font-size: 16px; font-weight: 800; }
.price-card .target { font-size: 12.5px; color: var(--ink-2); }
.price-card .amount { font-size: 34px; font-weight: 800; color: var(--green); line-height: 1.15; margin-top: 8px; }
.price-card .amount small { font-size: 14px; font-weight: 600; color: var(--ink-2); margin-left: 2px; }
.price-card ul { list-style: none; margin-top: 12px; display: flex; flex-direction: column; gap: 7px; font-size: 13px; color: var(--ink-2); }
.price-card ul li::before { content: '\2713'; color: var(--green); font-weight: 700; margin-right: 7px; }
.price-card.featured { border: 2px solid var(--green); box-shadow: 0 10px 30px rgba(27,94,32,.10); }
.price-banner { margin-top: 22px; background: var(--green-dark); color: #fff; border-radius: 14px; padding: 22px 26px; display: flex; flex-wrap: wrap; gap: 6px 24px; align-items: baseline; justify-content: space-between; }
.price-banner b { font-size: 16px; }
.price-banner span { font-size: 13.5px; color: rgba(255,255,255,.82); }
.price-note { margin-top: 14px; font-size: 13px; color: var(--ink-2); }
@media (max-width: 900px){ .price-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .price-grid { grid-template-columns: 1fr; } }

/* 报价区功能清单 */
.price-feats { margin-top: 24px; display: flex; flex-direction: column; gap: 20px; }
.price-feats h3 { font-size: 15px; font-weight: 800; margin-bottom: 10px; }
.price-feats h3 small { font-size: 12.5px; font-weight: 600; color: var(--ink-3); margin-left: 8px; }
.price-feats .cat-strip { gap: 8px; }
.price-feats .cat-strip span { font-size: 12.5px; padding: 6px 13px; }
.price-slogan { margin-top: 10px; font-size: 14.5px; color: var(--ink-2); letter-spacing: .02em; }

/* 上手视频一行五张（紧凑） */
.video-grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.video-grid-5 .video-card video { aspect-ratio: 16/10; }
.video-grid-5 .video-info { padding: 12px 12px 14px; }
.video-grid-5 .video-info h3 { font-size: 14px; margin-bottom: 3px; }
.video-grid-5 .video-info p { font-size: 12px; line-height: 1.5; }
@media (max-width: 1100px){ .video-grid-5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 640px){ .video-grid-5 { grid-template-columns: repeat(2, 1fr); } }