/* =========================================================
   地果广告传媒 · 官网
   风格：取自公司 PPT 的视觉体系
   米白纸感底 × 深林绿块 × 翡翠绿点缀，简洁现代、留白充足
   ========================================================= */

:root {
  /* 背景（米白 / 近白，来自 PPT 页面底色 #FFF8ED / #FFFFFA） */
  --bg: #fffdfa;
  --bg-soft: #fff8ed;
  /* 深绿（PPT 封面与重点页 #001A13 / #044D3A） */
  --pine: #044d3a;
  --pine-deep: #001a13;
  --pine-soft: #06352a;
  /* 文字 */
  --ink: #1e1e1e;
  --ink-2: #5b5d55;
  --ink-3: #9b9a8e;
  --cream: #fff8ed;
  --cream-2: rgba(255, 248, 237, 0.72);
  --cream-3: rgba(255, 248, 237, 0.5);
  /* 线条（米色发丝线） */
  --line: #efe6d3;
  --line-2: #e4d9c2;
  --line-dark: rgba(255, 248, 237, 0.14);
  /* 品牌色（PPT 主强调色翡翠绿 + 薄荷/鼠尾草辅色） */
  --accent: #00bf85;
  --accent-2: #96ea9a;
  --sage: #95c597;
  --accent-ink: #05735a;          /* 米白底上可读的绿 */
  --accent-grad: linear-gradient(115deg, #00bf85 10%, #96ea9a 90%);
  --accent-soft: rgba(0, 191, 133, 0.08);
  --accent-soft-2: rgba(0, 191, 133, 0.18);
  /* 平台品牌色 */
  --c-xhs: #ff2442;
  --c-dy: #161823;
  --c-wb: #ff8200;
  --c-jd: #e1251b;
  --c-pdd: #e02e24;
  /* 形状 / 阴影 */
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(30, 30, 30, 0.04);
  --shadow: 0 12px 32px rgba(4, 77, 58, 0.1);
  /* 布局 */
  --maxw: 1120px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
::selection { background: var(--accent-soft-2); color: var(--pine); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--mono); font-feature-settings: "tnum" 1; }
.hide-mobile { display: inline; }

/* ---------- 区块 ---------- */
.section { padding: 96px 0; position: relative; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 640px; margin-bottom: 52px; }
.section-tag {
  display: inline-block; font-family: var(--mono);
  font-size: 12px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 16px;
}
.section-head h2 {
  font-size: clamp(1.8rem, 3.4vw, 2.5rem);
  font-weight: 800; letter-spacing: -0.02em; line-height: 1.2; color: var(--ink);
}
.section-head p { margin-top: 16px; color: var(--ink-2); font-size: 16px; }

/* 深绿重点区块（呼应 PPT 整页深绿的重点页） */
.section-dark { background: var(--pine); color: var(--cream); }
.section-dark .section-head h2 { color: var(--cream); }
.section-dark .section-head p { color: var(--cream-2); }
.section-dark .card,
.section-dark .hl {
  background: rgba(255, 248, 237, 0.05);
  border-color: var(--line-dark);
  box-shadow: none;
}
.section-dark .card:hover { border-color: rgba(0, 191, 133, 0.55); }
.section-dark h3, .section-dark h4 { color: var(--cream); }
.section-dark p, .section-dark li { color: var(--cream-2); }
.section-dark strong { color: var(--cream); }
.section-dark .service-index, .section-dark .adv-index, .section-dark .case-num { color: var(--accent-2); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: 999px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
}
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 8px 22px rgba(0, 191, 133, 0.32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0, 191, 133, 0.42); background: #00a875; }
.btn-ghost {
  background: #fff; color: var(--ink); border-color: var(--line-2);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent-ink); }
.btn-lg { padding: 16px 40px; font-size: 16px; }

/* ---------- 导航 ---------- */
/* 初始悬于深绿 Hero 之上：米白文字；滚动后：米白毛玻璃 + 深色文字 */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: transparent;
  backdrop-filter: none;
  border-bottom: 1px solid transparent;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled {
  background: rgba(255, 251, 243, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(4, 77, 58, 0.06);
}
.nav-inner { display: flex; align-items: center; gap: 30px; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; flex: none; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px; background: var(--accent);
  color: #fff; font-weight: 800; font-size: 19px; display: grid; place-items: center;
  box-shadow: 0 6px 16px rgba(0, 191, 133, 0.35);
}
.brand-text { font-weight: 700; font-size: 16.5px; color: var(--cream); line-height: 1.25; letter-spacing: -0.01em; transition: color .3s ease; }
.brand-text em {
  display: block; font-style: normal; font-family: var(--mono);
  font-size: 9.5px; font-weight: 600; letter-spacing: 0.22em; color: var(--cream-3); text-transform: uppercase;
  transition: color .3s ease;
}
.nav-links { display: flex; gap: 2px; margin-left: auto; }
.nav-links a {
  padding: 8px 15px; border-radius: 9px; font-size: 14.5px; font-weight: 500;
  color: var(--cream-2); transition: color .2s ease, background .2s ease;
}
.nav-links a:hover { color: var(--cream); background: rgba(255, 248, 237, 0.08); }
.nav-links a.active { color: var(--accent-2); background: rgba(0, 191, 133, 0.12); font-weight: 600; }
.nav-cta { font-size: 14px; padding: 10px 22px; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 22px; height: 2px; margin: 5px 0; border-radius: 2px;
  background: var(--cream); transition: transform .3s ease, opacity .3s ease, background .3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* 滚动后的导航配色翻转 */
.site-header.scrolled .brand-text { color: var(--ink); }
.site-header.scrolled .brand-text em { color: var(--ink-3); }
.site-header.scrolled .nav-links a { color: var(--ink-2); }
.site-header.scrolled .nav-links a:hover { color: var(--ink); background: var(--bg-soft); }
.site-header.scrolled .nav-links a.active { color: var(--accent-ink); background: var(--accent-soft); }
.site-header.scrolled .nav-toggle span { background: var(--ink); }

/* ---------- Hero（深绿封面页） ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: 176px 0 100px;
  background:
    radial-gradient(760px 460px at 84% -10%, rgba(0, 191, 133, 0.22), transparent 66%),
    radial-gradient(620px 420px at 6% 110%, rgba(150, 234, 154, 0.1), transparent 60%),
    linear-gradient(160deg, #01251b 0%, var(--pine-deep) 55%, #02301f 100%);
  color: var(--cream);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255, 248, 237, 0.07) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 72%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 72%);
}
.hero-inner { position: relative; text-align: center; max-width: 860px; margin: 0 auto; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 8px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 500;
  color: var(--cream); background: rgba(0, 191, 133, 0.14);
  border: 1px solid rgba(0, 191, 133, 0.38); margin-bottom: 30px;
}
.hero-badge::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 4px rgba(0, 191, 133, 0.22);
}
.hero h1 {
  font-size: clamp(2.5rem, 6.4vw, 4.4rem);
  font-weight: 800; letter-spacing: -0.03em; line-height: 1.08; color: var(--cream);
}
.hero h1 em {
  font-style: normal;
  background: var(--accent-grad);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub {
  margin: 26px auto 0; max-width: 620px;
  font-size: clamp(1rem, 1.6vw, 1.18rem); color: var(--cream-2); line-height: 1.75;
}
.hero-actions { margin-top: 40px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .btn-ghost { background: transparent; color: var(--cream); border-color: rgba(255, 248, 237, 0.32); }
.hero .btn-ghost:hover { border-color: var(--accent-2); color: var(--accent-2); }
.hero-stats {
  margin-top: 76px; display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
}
.stat { padding: 30px 12px 0; text-align: center; position: relative; }
.stat + .stat::before {
  content: ""; position: absolute; left: 0; top: 32px; bottom: 0; width: 1px; background: var(--line-dark);
}
.stat-num {
  display: block; font-family: var(--mono); font-weight: 700;
  font-size: clamp(1.9rem, 3.6vw, 2.6rem); letter-spacing: -0.02em;
  background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-label { display: block; margin-top: 8px; font-size: 13.5px; color: var(--cream-3); }

/* ---------- 通用卡片（米白底上的白卡） ---------- */
.card {
  background: #fffefb; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent-soft-2); }

/* ---------- 关于我们 ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 28px; align-items: start; }
.about-main { padding: 40px; }
.about-main h3 { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 18px; }
.about-main p { color: var(--ink-2); margin-bottom: 16px; }
.about-main p strong { color: var(--ink); font-weight: 700; }
.about-points { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.about-points span {
  padding: 7px 16px; border-radius: 999px; font-size: 13px; font-weight: 500;
  color: var(--accent-ink); background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
}
.about-side { display: flex; flex-direction: column; gap: 18px; }
.mini-card { padding: 26px 26px; display: flex; gap: 16px; align-items: flex-start; }
.mini-icon {
  width: 46px; height: 46px; flex: none; border-radius: 12px; display: grid; place-items: center;
  background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
  font-size: 21px;
}
.mini-card h4 { font-size: 15.5px; font-weight: 700; margin-bottom: 6px; }
.mini-card p { font-size: 13.5px; color: var(--ink-2); line-height: 1.65; }
.capability-strip {
  margin-top: 28px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
}
.cap { padding: 26px 22px; text-align: center; }
.cap-num {
  display: block; font-family: var(--mono); font-weight: 700; letter-spacing: -0.02em;
  font-size: clamp(1.7rem, 3vw, 2.3rem); color: var(--accent-ink);
}
.cap p { margin-top: 10px; font-size: 13px; color: var(--ink-2); line-height: 1.6; }

/* ---------- 平台覆盖 ---------- */
.platform-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.platform-card { padding: 34px; }
.platform-head { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
.platform-dot { width: 12px; height: 12px; border-radius: 4px; flex: none; }
.dot-xhs { background: var(--c-xhs); }
.dot-dy { background: var(--c-dy); }
.dot-wb { background: var(--c-wb); }
.dot-jd { background: var(--c-jd); }
.dot-pdd { background: var(--c-pdd); }
.platform-head h3 { font-size: 22px; font-weight: 800; letter-spacing: -0.01em; }
.platform-role { margin-left: auto; font-family: var(--mono); font-size: 11px; font-weight: 600; letter-spacing: 0.08em; color: var(--ink-3); text-transform: uppercase; }
.platform-block { padding-top: 20px; border-top: 1px solid var(--line); }
.platform-block + .platform-block { margin-top: 4px; }
.platform-block h5 {
  font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.platform-block li {
  position: relative; padding-left: 18px; margin-bottom: 12px;
  font-size: 14px; color: var(--ink-2); line-height: 1.65;
}
.platform-block li:last-child { margin-bottom: 0; }
.platform-block li::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px;
  border-radius: 2px; background: var(--accent-soft-2);
}
.platform-block li strong { color: var(--ink); font-weight: 600; }

.expand-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 22px; }
.expand-card { padding: 32px; }
.expand-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 12px; }
.expand-desc { font-size: 14px; color: var(--ink-2); margin-bottom: 20px; }
.expand-items, .persona-list { display: flex; flex-direction: column; gap: 14px; }
.expand-items > div, .persona-list > div {
  display: flex; align-items: baseline; gap: 14px; padding-top: 14px; border-top: 1px solid var(--line);
}
.expand-items > div:first-child, .persona-list > div:first-child { border-top: 0; padding-top: 0; }
.expand-items strong, .persona-list strong { font-size: 15px; font-weight: 700; flex: none; min-width: 64px; }
.expand-items span, .persona-list span { font-size: 13.5px; color: var(--ink-2); }

/* ---------- 服务内容（深绿重点区块） ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card { padding: 36px 32px; position: relative; overflow: hidden; }
.service-index {
  font-family: var(--mono); font-size: 13px; font-weight: 700; letter-spacing: 0.1em;
  color: var(--accent-2); margin-bottom: 18px; display: block;
}
.section-dark .card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(0, 0, 0, 0.28); }
.service-card h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 18px; letter-spacing: -0.01em; }
.service-card li {
  position: relative; padding-left: 18px; margin-bottom: 13px;
  font-size: 14px; color: var(--cream-2); line-height: 1.65;
}
.service-card li:last-child { margin-bottom: 0; }
.service-card li::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px;
  border-radius: 2px; background: rgba(0, 191, 133, 0.5);
}
.service-card li strong { color: var(--cream); font-weight: 600; }
.highlight-strip {
  margin-top: 22px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.hl {
  padding: 24px; border: 1px solid var(--line-dark); border-radius: var(--radius-sm);
  background: rgba(255, 248, 237, 0.04);
}
.hl strong { display: block; font-size: 14.5px; font-weight: 700; color: var(--accent-2); margin-bottom: 8px; }
.hl span { font-size: 13px; color: var(--cream-2); line-height: 1.6; }

/* ---------- 成功案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card { padding: 30px; display: flex; flex-direction: column; }
.case-card.case-wide { grid-column: span 3; }
.case-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.case-platform {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 13px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
  color: var(--ink); background: var(--bg-soft); border: 1px solid var(--line);
}
.case-platform i { width: 8px; height: 8px; border-radius: 50%; font-style: normal; }
.cp-mt i { background: #ffd100; }
.cp-honor i { background: var(--c-xhs); }
.cp-hw i { background: #cf0a2c; }
.cp-gree i { background: #00a0e9; }
.cp-local i { background: var(--c-wb); }
.cp-xhs i { background: var(--c-xhs); }
.cp-dy i { background: var(--c-dy); }
.case-num { font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--accent-ink); letter-spacing: -0.01em; }
.case-card h3 { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 12px; }
.case-card > p { font-size: 14px; color: var(--ink-2); line-height: 1.7; }
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.case-tags span {
  padding: 5px 12px; border-radius: 7px; font-size: 12px; font-weight: 500;
  color: var(--accent-ink); background: var(--accent-soft);
}
.case-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 8px 0 18px; }
.case-cols > div { padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--bg-soft); }
.case-cols strong { display: block; font-size: 14px; font-weight: 700; margin-bottom: 8px; }
.case-cols span { font-size: 12.5px; color: var(--ink-2); line-height: 1.6; }
.case-card > p strong { color: var(--accent-ink); font-weight: 700; }

/* ---------- 服务优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.adv-card { padding: 30px 26px; }
.adv-index {
  font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--accent);
  letter-spacing: 0.1em; display: block; margin-bottom: 16px;
}
.adv-icon {
  width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center;
  background: var(--accent-soft); border: 1px solid var(--accent-soft-2);
  font-size: 23px; margin-bottom: 20px;
}
.adv-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 10px; }
.adv-card p { font-size: 13.5px; color: var(--ink-2); line-height: 1.65; }
.guard-strip {
  margin-top: 22px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.guard {
  padding: 24px; border-radius: var(--radius-sm); background: var(--pine); color: var(--cream);
}
.guard strong { display: block; font-size: 15px; font-weight: 700; margin-bottom: 8px; color: var(--cream); }
.guard strong::before { content: "✓ "; color: var(--accent); }
.guard span { font-size: 13px; color: var(--cream-2); line-height: 1.6; }

/* ---------- 联系我们（深绿收尾区块） ---------- */
.contact { background: linear-gradient(165deg, #01251b 0%, var(--pine-deep) 70%); color: var(--cream); }
.contact .section-head { margin-bottom: 40px; }
.contact .section-head h2 { color: var(--cream); }
.contact .section-head p { color: var(--cream-2); }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.contact-card {
  padding: 32px 28px; background: rgba(255, 248, 237, 0.05); border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  transition: transform .28s ease, border-color .28s ease, background .28s ease;
}
.contact-card:hover { transform: translateY(-4px); border-color: rgba(0, 191, 133, 0.55); background: rgba(255, 248, 237, 0.07); }
.c-icon {
  width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center;
  background: rgba(0, 191, 133, 0.16); border: 1px solid rgba(0, 191, 133, 0.35); font-size: 22px; margin-bottom: 20px;
}
.contact-card h4 { font-size: 13px; font-weight: 600; letter-spacing: 0.06em; color: var(--cream-3); text-transform: uppercase; margin-bottom: 10px; }
.contact-card p { font-size: 16px; font-weight: 600; color: var(--cream); line-height: 1.6; }
.contact-card p a { transition: color .2s ease; }
.contact-card p a:hover { color: var(--accent-2); }
.contact-card p em { display: block; font-style: normal; font-size: 13px; font-weight: 400; color: var(--cream-3); margin-top: 4px; }
.contact-cta { margin-top: 40px; text-align: center; }

/* 合并区块中“关于我们”部分的深绿适配 */
.contact .about-main p, .contact .cap p, .contact .mini-card p { color: var(--cream-2); }
.contact .about-main p strong { color: var(--cream); }
.contact .about-points span {
  color: var(--accent-2); background: rgba(0, 191, 133, 0.12); border-color: rgba(0, 191, 133, 0.32);
}
.contact .cap-num { color: var(--accent-2); }
.contact-block { margin-top: 72px; padding-top: 56px; border-top: 1px solid var(--line-dark); }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--pine-deep); color: rgba(255, 248, 237, 0.62); padding: 44px 0; }
.footer-inner { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .brand-mark { box-shadow: none; }
.footer-brand strong { color: var(--cream); font-size: 15px; font-weight: 700; display: block; }
.footer-brand p { font-size: 12.5px; color: rgba(255, 248, 237, 0.45); }
.footer-links { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.footer-links a { padding: 7px 13px; border-radius: 8px; font-size: 13.5px; color: rgba(255, 248, 237, 0.62); transition: color .2s ease, background .2s ease; }
.footer-links a:hover { color: var(--cream); background: rgba(255, 248, 237, 0.07); }
.copyright { width: 100%; margin-top: 22px; padding-top: 22px; border-top: 1px solid rgba(255, 248, 237, 0.1); font-size: 12.5px; color: rgba(255, 248, 237, 0.4); }
.copyright a { transition: color .2s ease; }
.copyright a:hover { color: var(--cream); }

/* ---------- 滚动渐显 ---------- */
html.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
html.js .reveal.visible { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .section { padding: 80px 0; }
  .capability-strip { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: 1fr; }
  .highlight-strip { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .case-card.case-wide { grid-column: span 2; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .guard-strip { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-head { margin-bottom: 36px; }
  .hide-mobile { display: none; }

  /* 导航 -> 汉堡（移动端菜单面板始终为米白底，文字用深色） */
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 66px; left: 0; right: 0;
    flex-direction: column; gap: 0; margin: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px rgba(4, 77, 58, 0.12);
    padding: 8px 16px 16px;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
  }
  .nav-links.open { opacity: 1; visibility: visible; transform: none; }
  /* 移动端菜单面板始终为米白底，链接统一深色 */
  .nav-links a { padding: 13px 12px; border-radius: 10px; font-size: 15px; color: var(--ink-2); }
  .nav-links a:hover { color: var(--ink); background: var(--bg-soft); }
  .nav-links a.active { color: var(--accent-ink); background: var(--accent-soft); }
  .nav-cta { display: none; }

  /* Hero */
  .hero { padding: 140px 0 76px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 0 8px; }
  .stat { padding: 22px 8px 0; }
  .stat + .stat::before { display: none; }
  .stat:nth-child(3)::before { display: none; }
  .hero-stats .stat:nth-child(n + 3) { border-top: 1px solid var(--line-dark); }

  .about-grid { grid-template-columns: 1fr; }
  .about-main { padding: 30px 26px; }
  .capability-strip { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .platform-grid { grid-template-columns: 1fr; }
  .expand-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .case-card.case-wide { grid-column: span 1; }
  .case-cols { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .hero-actions .btn { width: 100%; }
  .footer-links { margin-left: 0; }
}

@media (max-width: 420px) {
  .capability-strip { grid-template-columns: 1fr; }
}

/* 尊重减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  html.js .reveal { opacity: 1; transform: none; transition: none; }
  * { transition-duration: 0.001ms !important; }
}