/* ==========================================================================
   苏州万智达企业管理有限公司 · GEO优化版官方网站
   设计系统：深蓝(#1D1114) + 蓝(#C8102E) + 金(#f0a020)
   ========================================================================== */
:root {
  --navy-900: #1D1114;
  --navy-800: #2A171C;
  --navy-700: #3B1F26;
  --navy-600: #4A2630;
  --blue-500: #C8102E;
  --blue-400: #E23A50;
  --gold-500: #f0a020;
  --gold-400: #ffc44d;
  --red-600: #e63946;
  --ink-900: #0f172a;
  --ink-800: #1e293b;
  --ink-700: #334155;
  --ink-500: #64748b;
  --ink-400: #94a3b8;
  --bg-light: #f6f8fc;
  --bg-white: #ffffff;
  --border: #e5eaf3;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(16, 34, 77, .08);
  --shadow-lg: 0 20px 60px rgba(16, 34, 77, .14);
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink-700); background: var(--bg-white); line-height: 1.7; overflow-x: hidden; }
img { max-width: 100%; }
::selection { background: var(--red-600); color: #fff; }
a { color: var(--blue-500); }

/* ===================== 顶部导航 ===================== */
.nav-util { background: rgba(6, 15, 38, .97); border-bottom: 1px solid rgba(255,255,255,.07); }
.nav-util .wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 34px; display: flex; align-items: center; justify-content: space-between; font-size: 12px; }
.util-slogan { color: var(--gold-400); letter-spacing: 1.5px; font-weight: 600; }
.util-right { color: rgba(255,255,255,.5); letter-spacing: 1px; }
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10, 22, 51, .88); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: all .3s;
}
.navbar .wrap { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-logo { display: flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; }
.nav-logo .logo-mark { width: 38px; height: 38px; flex-shrink: 0; display: block; box-shadow: 0 4px 16px rgba(200,16,46,.4); border-radius: 9px; }
.nav-logo .logo-txt b { font-size: 17px; letter-spacing: 1px; display: block; line-height: 1.25; }
.nav-logo .logo-txt small { display: block; font-size: 10px; color: var(--gold-400); letter-spacing: 3px; font-weight: 600; margin-top: 2px; }
.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links > a { color: rgba(255,255,255,.78); text-decoration: none; font-size: 14px; padding: 8px 12px; border-radius: 8px; transition: all .25s; }
.nav-links > a:hover, .nav-links > a.active { color: #fff; background: rgba(255,255,255,.12); }
.nav-links > a.active { color: var(--gold-400); }
/* ===== 两级导航：一级主菜单 ===== */
.nav-item { position: relative; }
.nav-top { display: inline-flex; flex-direction: row; align-items: center; gap: 6px; font-size: 15px; font-weight: 800; color: #fff !important; line-height: 1.2; letter-spacing: 0.5px; padding: 8px 12px !important; white-space: nowrap; border-radius: 8px; text-decoration: none; }
.nav-sub { font-size: 12px; font-weight: 600; color: var(--gold-400); letter-spacing: 1px; }
.nav-sep { color: rgba(255,255,255,.35); font-weight: 400; font-size: 12px; margin: 0 1px; }
.nav-item:hover .nav-top { color: var(--gold-400) !important; background: rgba(255,255,255,.12); }
.nav-item:hover .nav-sep { color: rgba(255,255,255,.55); }
/* ===== 两级导航：二级下拉面板 ===== */
.nav-drop { position: absolute; top: calc(100% + 12px); left: 50%; transform: translateX(-50%) translateY(6px); background: #fff; border-radius: 14px; box-shadow: 0 18px 50px rgba(10,22,51,.24); padding: 8px; min-width: 172px; opacity: 0; visibility: hidden; transition: all .22s ease; z-index: 1200; border: 1px solid rgba(10,22,51,.06); }
.nav-drop::before { content: ""; position: absolute; top: -7px; left: 50%; transform: translateX(-50%); border: 7px solid transparent; border-bottom-color: #fff; }
.nav-drop a { display: flex; align-items: center; gap: 7px; color: var(--ink-700); font-size: 13.5px; font-weight: 600; padding: 10px 14px; border-radius: 8px; white-space: nowrap; text-decoration: none; }
.nav-drop a:hover { background: rgba(200,16,46,.06); color: var(--red-600) !important; }
.nav-item:hover .nav-drop, .nav-item:focus-within .nav-drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-hot { font-style: normal; font-size: 10px; color: #fff; background: linear-gradient(135deg, var(--red-500), var(--red-600)); border-radius: 20px; padding: 1px 7px; font-weight: 700; letter-spacing: 0; }
.nav-cta { background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); color: #7a4a00 !important; font-weight: 700; box-shadow: 0 4px 18px rgba(240,160,32,.35); }
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 22px rgba(240,160,32,.5); color: #7a4a00 !important; background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); }
.menu-btn { display: none; background: none; border: none; color: #fff; font-size: 26px; cursor: pointer; padding: 4px 8px; }

/* ===================== Hero（首页） ===================== */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(200,16,46,.35), transparent 60%),
    radial-gradient(700px 420px at 10% 110%, rgba(240,160,32,.18), transparent 60%),
    linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  color: #fff; overflow: hidden;
}
.hero-grid-bg { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px); background-size: 52px 52px; mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%); }
.hero .wrap { max-width: 1200px; margin: 0 auto; padding: 120px 24px 90px; display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18); padding: 7px 16px; border-radius: 100px; font-size: 13px; letter-spacing: 1px; color: var(--gold-400); margin-bottom: 26px; }
.hero h1 { font-size: clamp(30px, 4vw, 48px); font-weight: 800; line-height: 1.28; letter-spacing: 1px; margin-bottom: 22px; }
.hero h1 .hl { background: linear-gradient(90deg, var(--gold-400), var(--gold-500)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .sub { font-size: 16.5px; color: rgba(255,255,255,.72); max-width: 560px; margin-bottom: 34px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); color: #7a4a00; font-weight: 700; padding: 14px 30px; border-radius: 100px; text-decoration: none; box-shadow: 0 8px 28px rgba(240,160,32,.4); transition: all .3s; border: none; cursor: pointer; font-size: 15px; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 34px rgba(240,160,32,.55); color: #7a4a00; }
.btn-ghost { display: inline-flex; align-items: center; gap: 8px; color: #fff; border: 1px solid rgba(255,255,255,.3); padding: 13px 28px; border-radius: 100px; text-decoration: none; transition: all .3s; background: rgba(255,255,255,.05); font-size: 15px; }
.btn-ghost:hover { background: rgba(255,255,255,.14); transform: translateY(-3px); color: #fff; }
.btn-blue { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, var(--blue-400), var(--blue-500)); color: #fff; font-weight: 700; padding: 13px 28px; border-radius: 100px; text-decoration: none; box-shadow: 0 8px 24px rgba(200,16,46,.35); transition: all .3s; border: none; cursor: pointer; font-size: 15px; }
.btn-blue:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(200,16,46,.5); color: #fff; }
.hero-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 48px; }
.hero-stat { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); border-radius: 14px; padding: 18px 16px; backdrop-filter: blur(6px); }
.hero-stat b { display: block; font-size: 28px; color: var(--gold-400); font-weight: 800; }
.hero-stat span { font-size: 12px; color: rgba(255,255,255,.65); }
.hero-visual { position: relative; }
.hero-card { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16); border-radius: 22px; padding: 30px 28px; backdrop-filter: blur(10px); box-shadow: 0 30px 80px rgba(0,0,0,.35); }
.hero-card .card-title { font-size: 15px; color: var(--gold-400); font-weight: 700; letter-spacing: 1px; margin-bottom: 18px; display: flex; align-items: center; gap: 8px; }
.hero-card .flow { display: flex; flex-direction: column; gap: 0; }
.flow-step { display: flex; align-items: center; gap: 14px; padding: 13px 0; position: relative; }
.flow-step:not(:last-child)::after { content: ""; position: absolute; left: 17px; top: 46px; bottom: -8px; width: 2px; background: linear-gradient(180deg, rgba(226,58,80,.6), rgba(226,58,80,.15)); }
.flow-ico { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, var(--blue-400), var(--blue-500)); display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; box-shadow: 0 4px 14px rgba(200,16,46,.4); }
.flow-step:nth-child(2) .flow-ico { background: linear-gradient(135deg, #7c5cff, #5a3cf0); }
.flow-step:nth-child(3) .flow-ico { background: linear-gradient(135deg, #ff8a4d, #f0652f); }
.flow-step:nth-child(4) .flow-ico { background: linear-gradient(135deg, #ff6b6b, #e63946); }
.flow-step:nth-child(5) .flow-ico { background: linear-gradient(135deg, #2fd9a0, #1aa87a); }
.flow-step:nth-child(6) .flow-ico { background: linear-gradient(135deg, var(--gold-400), var(--gold-500)); }
.flow-txt b { display: block; font-size: 15px; color: #fff; }
.flow-txt span { font-size: 12px; color: rgba(255,255,255,.6); }
.flow-more { display: block; margin-top: 14px; padding: 10px 14px; border: 1px dashed rgba(240,160,32,.4); border-radius: 10px; background: rgba(240,160,32,.08); color: var(--gold-400); font-size: 12px; text-decoration: none; transition: all .25s; }
.flow-more:hover { background: rgba(240,160,32,.16); border-color: rgba(240,160,32,.6); }
.float-chip { position: absolute; right: -26px; top: -22px; background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); color: #7a4a00; font-weight: 800; font-size: 13px; padding: 10px 18px; border-radius: 100px; box-shadow: 0 10px 30px rgba(240,160,32,.5); animation: floatY 4s ease-in-out infinite; z-index: 3; }
@keyframes floatY { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.scroll-hint { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.5); font-size: 12px; letter-spacing: 2px; display: flex; flex-direction: column; align-items: center; gap: 6px; z-index: 2; }
.scroll-hint::after { content: ""; width: 1px; height: 36px; background: linear-gradient(180deg, rgba(255,255,255,.5), transparent); }

/* ===================== 子页面 Hero ===================== */
.page-hero { background: linear-gradient(160deg, var(--navy-900), var(--navy-800) 55%, var(--navy-700)); color: #fff; padding: 140px 24px 76px; position: relative; overflow: hidden; }
.page-hero .grid-bg { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px); background-size: 52px 52px; }
.page-hero .wrap { max-width: 1200px; margin: 0 auto; position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(28px, 3.8vw, 42px); font-weight: 800; margin-bottom: 14px; line-height: 1.3; }
.page-hero h1 .hl { color: var(--gold-400); }
.page-hero p { font-size: 15.5px; color: rgba(255,255,255,.72); max-width: 820px; }
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 13px; color: rgba(255,255,255,.55); margin-bottom: 22px; flex-wrap: wrap; }
.breadcrumb a { color: rgba(255,255,255,.75); text-decoration: none; }
.breadcrumb a:hover { color: var(--gold-400); }
.breadcrumb .sep { color: rgba(255,255,255,.35); }

/* ===================== 通用区块 ===================== */
section { padding: 96px 24px; }
.wrap { max-width: 1200px; margin: 0 auto; }
.sec-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--blue-500); background: rgba(200,16,46,.08); padding: 6px 16px; border-radius: 100px; margin-bottom: 18px; }
.sec-title { font-size: clamp(25px, 3.2vw, 36px); font-weight: 800; color: var(--ink-900); line-height: 1.3; margin-bottom: 14px; }
.sec-title .hl { color: var(--blue-500); }
.sec-desc { font-size: 15.5px; color: var(--ink-500); max-width: 800px; }
.center { text-align: center; }
.center .sec-desc { margin: 0 auto; }
.bg-light { background: var(--bg-light); }
.bg-white { background: var(--bg-white); }
.mt-40 { margin-top: 40px; }
.mt-48 { margin-top: 48px; }

/* ===================== 核心理念 ===================== */
.philosophy-box { background: linear-gradient(135deg, var(--navy-900), var(--navy-700)); border-radius: 24px; padding: 56px 48px; color: #fff; position: relative; overflow: hidden; margin-top: 44px; }
.philosophy-box::before { content: "增收增利"; position: absolute; right: -20px; bottom: -45px; font-size: 170px; font-weight: 900; color: rgba(255,255,255,.04); letter-spacing: -10px; }
.philosophy-box .big { font-size: clamp(28px, 3.8vw, 44px); font-weight: 800; margin-bottom: 22px; line-height: 1.35; position: relative; z-index: 1; }
.philosophy-box .big .gold { color: var(--gold-400); }
.philosophy-box .desc { font-size: 15.5px; color: rgba(255,255,255,.8); max-width: 780px; margin-bottom: 34px; position: relative; z-index: 1; }
.philosophy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; position: relative; z-index: 2; }
.philosophy-item { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: 16px; padding: 24px 22px; transition: all .3s; }
.philosophy-item:hover { background: rgba(255,255,255,.14); transform: translateY(-5px); }
.philosophy-item .ico { font-size: 26px; margin-bottom: 12px; }
.philosophy-item b { display: block; font-size: 16.5px; color: var(--gold-400); margin-bottom: 8px; }
.philosophy-item p { font-size: 13.5px; color: rgba(255,255,255,.72); }
.ai-vs { display: grid; grid-template-columns: 1fr 54px 1fr; gap: 0; align-items: stretch; position: relative; z-index: 2; margin-top: 18px; }
.ai-vs-col { border-radius: 16px; padding: 24px 26px; }

/* 深色容器（如 philosophy-box）内的对比卡片：保持通透感，同时提升可读性 */
.ai-vs-col.fake { background: rgba(255,255,255,.06); border: 1px dashed rgba(255,255,255,.35); }
.ai-vs-col.real { background: linear-gradient(135deg, rgba(240,160,32,.22), rgba(240,160,32,.34)); border: 1px solid rgba(240,160,32,.55); }
.ai-vs-col h5 { font-size: 16px; margin-bottom: 12px; }
.ai-vs-col.fake h5 { color: rgba(255,255,255,.85); }
.ai-vs-col.real h5 { color: var(--gold-400); }
.ai-vs-col li { font-size: 14px; line-height: 1.95; list-style: none; }
.ai-vs-col.fake li { color: rgba(255,255,255,.78); }
.ai-vs-col.fake li::before { content: "✕ "; color: #ff8a8a; font-weight: 700; }
.ai-vs-col.real li { color: rgba(255,255,255,.95); }
.ai-vs-col.real li::before { content: "✓ "; color: var(--gold-400); font-weight: 700; }
.ai-vs-mid { display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; color: rgba(255,255,255,.55); }

/* 浅色/白色区块（.bg-white）内的对比卡片：白底深色字 + 高对比边框，彻底避免看不清 */
.bg-white .ai-vs-col,
section.bg-white .ai-vs-col { background: var(--bg-white); border: 1px solid var(--border); box-shadow: var(--shadow); }
.bg-white .ai-vs-col.fake,
section.bg-white .ai-vs-col.fake { border-style: dashed; border-color: rgba(200,16,46,.35); }
.bg-white .ai-vs-col.real,
section.bg-white .ai-vs-col.real { border: 2px solid var(--blue-500); box-shadow: 0 14px 36px rgba(200,16,46,.12); }
.bg-white .ai-vs-col.fake h5,
section.bg-white .ai-vs-col.fake h5 { color: var(--ink-900); }
.bg-white .ai-vs-col.real h5,
section.bg-white .ai-vs-col.real h5 { color: var(--navy-800); }
.bg-white .ai-vs-col.fake li,
section.bg-white .ai-vs-col.fake li { color: var(--ink-700); }
.bg-white .ai-vs-col.real li,
section.bg-white .ai-vs-col.real li { color: var(--ink-800); }
.bg-white .ai-vs-col.real li::before,
section.bg-white .ai-vs-col.real li::before { color: var(--blue-500); }
.bg-white .ai-vs-mid,
section.bg-white .ai-vs-mid { color: var(--ink-400); }

/* 浅灰容器（.bg-light）内的对比卡片：同样使用白底深色字，避免在灰底上看不清 */
.bg-light .ai-vs-col,
section.bg-light .ai-vs-col { background: var(--bg-white); border: 1px solid var(--border); box-shadow: var(--shadow); }
.bg-light .ai-vs-col.fake,
section.bg-light .ai-vs-col.fake { border-style: dashed; border-color: rgba(200,16,46,.35); }
.bg-light .ai-vs-col.real,
section.bg-light .ai-vs-col.real { border: 2px solid var(--blue-500); box-shadow: 0 14px 36px rgba(200,16,46,.12); }
.bg-light .ai-vs-col.fake h5,
section.bg-light .ai-vs-col.fake h5 { color: var(--ink-900); }
.bg-light .ai-vs-col.real h5,
section.bg-light .ai-vs-col.real h5 { color: var(--navy-800); }
.bg-light .ai-vs-col.fake li,
section.bg-light .ai-vs-col.fake li { color: var(--ink-700); }
.bg-light .ai-vs-col.real li,
section.bg-light .ai-vs-col.real li { color: var(--ink-800); }
.bg-light .ai-vs-col.real li::before,
section.bg-light .ai-vs-col.real li::before { color: var(--blue-500); }
.bg-light .ai-vs-col.fake li::before,
section.bg-light .ai-vs-col.fake li::before { color: var(--red-500); }
.bg-light .ai-vs-mid,
section.bg-light .ai-vs-mid { color: var(--ink-400); }

/* 短视频页专用：双闭环对比卡片（兼容 .bg-light / .bg-white） */
.vs-item { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 26px; box-shadow: var(--shadow); transition: all .3s; }
.vs-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: rgba(200,16,46,.25); }
.vs-ico { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 18px; background: linear-gradient(135deg, rgba(200,16,46,.12), rgba(200,16,46,.22)); }
.vs-item:nth-child(3) .vs-ico { background: linear-gradient(135deg, rgba(124,92,255,.12), rgba(124,92,255,.22)); }
.vs-item b { display: block; font-size: 18px; color: var(--ink-900); margin-bottom: 10px; }
.vs-item p { font-size: 14px; color: var(--ink-500); margin-bottom: 14px; }
.vs-list { list-style: none; }
.vs-list li { font-size: 13.5px; color: var(--ink-700); line-height: 2; }
.vs-list li::before { content: "✓ "; color: var(--blue-500); font-weight: 700; }
.vs-mid { display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; color: var(--ink-400); }

/* ===================== 服务 ===================== */
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 44px; }
.service-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; background: var(--bg-white); transition: all .35s; position: relative; overflow: hidden; }
.service-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--blue-400), var(--blue-500)); opacity: 0; transition: all .35s; }
.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(200,16,46,.25); }
.service-card:hover::before { opacity: 1; }
.service-card .num { position: absolute; right: 18px; top: 14px; font-size: 52px; font-weight: 900; color: rgba(29,17,20,.06); line-height: 1; }
.service-ico { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 18px; }
.s1 .service-ico { background: linear-gradient(135deg, #C8102E22, #C8102E44); } .s1::before { background: linear-gradient(90deg, var(--blue-400), var(--blue-500)); }
.s2 .service-ico { background: linear-gradient(135deg, #7c5cff22, #7c5cff44); } .s2::before { background: linear-gradient(90deg, #7c5cff, #5a3cf0); }
.s3 .service-ico { background: linear-gradient(135deg, #ff8a4d22, #ff8a4d44); } .s3::before { background: linear-gradient(90deg, #ff8a4d, #f0652f); }
.s4 .service-ico { background: linear-gradient(135deg, #e6394622, #e6394644); } .s4::before { background: linear-gradient(90deg, #ff6b6b, #e63946); }
.s5 .service-ico { background: linear-gradient(135deg, #2fd9a022, #2fd9a044); } .s5::before { background: linear-gradient(90deg, #2fd9a0, #1aa87a); }
.s6 .service-ico { background: linear-gradient(135deg, #f0a02022, #f0a02044); } .s6::before { background: linear-gradient(90deg, var(--gold-400), var(--gold-500)); }
.service-card h3 { font-size: 19px; font-weight: 800; color: var(--ink-900); margin-bottom: 12px; }
.service-card .sub-zh { display: inline-block; font-size: 12px; color: var(--blue-500); background: rgba(200,16,46,.08); padding: 3px 10px; border-radius: 100px; margin-bottom: 12px; font-weight: 600; }
.service-card p { font-size: 14px; color: var(--ink-500); margin-bottom: 16px; }
.service-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-tags span { font-size: 12px; color: var(--ink-700); background: var(--bg-light); border: 1px solid var(--border); padding: 4px 10px; border-radius: 100px; }
.service-tags span.imp { color: var(--red-600); border-color: rgba(230,57,70,.3); background: rgba(230,57,70,.05); }
.service-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 13.5px; font-weight: 700; color: var(--blue-500); text-decoration: none; }
.service-link:hover { color: var(--navy-700); }
.service-metrics { margin-top: 44px; background: var(--bg-light); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px 32px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.service-metric { text-align: center; }
.service-metric b { display: block; font-size: 30px; color: var(--navy-800); font-weight: 800; }
.service-metric b em { font-style: normal; color: var(--gold-500); }
.service-metric span { font-size: 13px; color: var(--ink-500); }

/* ===================== 特点/优势 ===================== */
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 44px; }
.feature-item { display: flex; gap: 18px; background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 24px; transition: all .3s; }
.feature-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.feature-ico { width: 48px; height: 48px; flex-shrink: 0; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; background: linear-gradient(135deg, rgba(200,16,46,.12), rgba(200,16,46,.22)); }
.feature-item b { display: block; font-size: 16.5px; color: var(--ink-900); margin-bottom: 7px; }
.feature-item p { font-size: 13.5px; color: var(--ink-500); }

/* ===================== 痛点 ===================== */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.pain-card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-white); overflow: hidden; transition: all .3s; }
.pain-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.pain-top { padding: 22px 24px 0; }
.pain-top .ico { font-size: 30px; }
.pain-top b { display: block; font-size: 17px; color: var(--ink-900); margin: 10px 0 8px; }
.pain-top p { font-size: 13.5px; color: var(--ink-500); }
.pain-sol { background: linear-gradient(135deg, rgba(200,16,46,.06), rgba(200,16,46,.12)); border-top: 1px dashed rgba(200,16,46,.3); padding: 16px 24px 20px; }
.pain-sol .label { font-size: 12px; font-weight: 700; color: var(--blue-500); margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.pain-sol p { font-size: 13.5px; color: var(--ink-700); }
/* 短视频页等使用的简化痛点卡片 */
.pain-item { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-white); padding: 24px 22px; transition: all .3s; }
.pain-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.pain-ico { font-size: 30px; margin-bottom: 10px; }
.pain-item b { display: block; font-size: 17px; color: var(--ink-900); margin: 10px 0 8px; }
.pain-item p { font-size: 13.5px; color: var(--ink-500); }
.pain-alert { margin-top: 48px; padding: 28px 32px; background: linear-gradient(135deg, rgba(240,160,32,.08), rgba(240,160,32,.16)); border: 1px solid rgba(240,160,32,.35); border-radius: 16px; font-size: 17px; line-height: 1.8; color: var(--navy-800); text-align: left; }
.pain-alert b { color: var(--gold-500); }

/* ===================== 品牌故事 ===================== */
.story { background: linear-gradient(160deg, var(--navy-900), var(--navy-800)); color: #fff; }
.story .sec-tag { background: rgba(255,255,255,.1); color: var(--gold-400); }
.story .sec-title { color: #fff; }
.story .sec-title .hl { color: var(--gold-400); }
.story .sec-desc { color: rgba(255,255,255,.7); }
.timeline { margin-top: 56px; position: relative; padding-left: 40px; }
.timeline::before { content: ""; position: absolute; left: 13px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(180deg, var(--gold-400), rgba(255,255,255,.1)); }
.tl-item { position: relative; padding: 0 0 38px 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before { content: ""; position: absolute; left: -35px; top: 7px; width: 14px; height: 14px; border-radius: 50%; background: var(--gold-400); box-shadow: 0 0 0 5px rgba(240,160,32,.22); }
.tl-item.highlight::before { background: var(--blue-400); box-shadow: 0 0 0 5px rgba(226,58,80,.25); }
.tl-year { font-size: 13px; font-weight: 800; color: var(--gold-400); letter-spacing: 1px; background: rgba(240,160,32,.12); display: inline-block; padding: 3px 12px; border-radius: 100px; margin-bottom: 10px; }
.tl-item.highlight .tl-year { color: var(--blue-400); background: rgba(226,58,80,.14); }
.tl-item h4 { font-size: 17.5px; color: #fff; margin-bottom: 8px; font-weight: 700; }
.tl-item p { font-size: 14px; color: rgba(255,255,255,.72); max-width: 860px; }
.tl-item p b { color: var(--gold-400); font-weight: 700; }
.tl-item.highlight p b { color: var(--blue-400); }

/* ===================== 信任背书 ===================== */
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.trust-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 24px; transition: all .3s; }
.trust-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.trust-card .t-ico { font-size: 28px; margin-bottom: 14px; }
.trust-card h4 { font-size: 16.5px; color: var(--ink-900); margin-bottom: 10px; font-weight: 800; }
.trust-card p { font-size: 13.5px; color: var(--ink-500); }
.trust-certs { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.cert-chip { background: var(--bg-white); border: 1px solid var(--border); border-radius: 100px; padding: 10px 22px; font-size: 13px; color: var(--ink-700); font-family: var(--font); transition: all .3s; cursor: pointer; }
.cert-chip b { color: var(--blue-500); }
.cert-chip:hover { border-color: var(--blue-500); box-shadow: 0 4px 16px rgba(200,16,46,.12); }

/* ===================== 案例 ===================== */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 44px; }
.case-card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-white); padding: 0; overflow: hidden; transition: all .35s; display: flex; flex-direction: column; }
.case-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-8px); }
.case-head { padding: 22px 24px 16px; }
.case-cat { font-size: 11.5px; font-weight: 700; color: var(--blue-500); background: rgba(200,16,46,.08); padding: 3px 10px; border-radius: 100px; display: inline-block; margin-bottom: 12px; letter-spacing: 1px; }
.case-card h3 { font-size: 16.5px; color: var(--ink-900); font-weight: 800; line-height: 1.45; }
.case-body { padding: 0 24px 18px; font-size: 13.5px; color: var(--ink-500); flex: 1; }
.case-num { border-top: 1px solid var(--border); background: var(--bg-light); padding: 14px 24px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.case-num .arrow { color: var(--gold-500); font-weight: 800; }
.case-num span { font-size: 13px; font-weight: 700; color: var(--navy-800); }
.case-num small { font-size: 12px; color: var(--ink-500); font-weight: 400; }

/* ===================== 流程步骤 ===================== */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; margin-top: 44px; counter-reset: step; }
.step-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; position: relative; transition: all .3s; }
.step-card:hover { box-shadow: var(--shadow); transform: translateY(-5px); }
.step-card .step-num { width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, var(--blue-400), var(--blue-500)); color: #fff; font-weight: 800; font-size: 17px; display: flex; align-items: center; justify-content: center; margin-bottom: 16px; box-shadow: 0 6px 18px rgba(200,16,46,.35); }
.step-card b { display: block; font-size: 15.5px; color: var(--ink-900); margin-bottom: 8px; }
.step-card p { font-size: 13px; color: var(--ink-500); }
.step-arrow { position: absolute; right: -14px; top: 42px; color: var(--gold-500); font-weight: 800; z-index: 2; font-size: 16px; }

/* ===================== 对比表 ===================== */
.cmp-table-wrap { margin-top: 44px; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-white); }
.cmp-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.cmp-table th, .cmp-table td { padding: 16px 20px; text-align: left; font-size: 14px; vertical-align: top; }
.cmp-table thead th { background: var(--navy-800); color: #fff; font-weight: 700; font-size: 14.5px; }
.cmp-table thead th.hl-col { background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); color: #7a4a00; }
.cmp-table tbody tr:nth-child(even) { background: var(--bg-light); }
.cmp-table tbody th { background: var(--bg-light); font-weight: 700; color: var(--ink-900); width: 140px; }
.cmp-table td .bad { color: var(--red-600); }
.cmp-table td .good { color: #1aa87a; font-weight: 600; }
.cmp-table td .best { color: var(--gold-500); font-weight: 700; }

/* ===================== FAQ ===================== */
.faq-list { max-width: 900px; margin: 44px auto 0; display: flex; flex-direction: column; gap: 14px; }
.faq-item { border: 1px solid var(--border); border-radius: 14px; background: var(--bg-white); overflow: hidden; transition: all .3s; }
.faq-item:hover { border-color: rgba(200,16,46,.3); }
.faq-item.open { box-shadow: var(--shadow); border-color: rgba(200,16,46,.35); }
.faq-q { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 20px 24px; background: none; border: none; cursor: pointer; font-family: var(--font); font-size: 15.5px; font-weight: 700; color: var(--ink-900); text-align: left; }
.faq-q .faq-icon { flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%; background: rgba(200,16,46,.08); color: var(--blue-500); display: flex; align-items: center; justify-content: center; font-weight: 800; transition: all .3s; font-size: 15px; }
.faq-item.open .faq-icon { background: var(--blue-500); color: #fff; transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a .inner { padding: 0 24px 22px; font-size: 14px; color: var(--ink-500); line-height: 1.9; }
.faq-a .inner b { color: var(--navy-800); }
.faq-stage { margin-top: 48px; }
.faq-stage h3 { font-size: 18px; font-weight: 800; color: var(--navy-800); display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.faq-stage .stage-desc { font-size: 13.5px; color: var(--ink-500); margin-bottom: 18px; }

/* ===================== CTA ===================== */
.cta { background: linear-gradient(135deg, var(--navy-900), var(--navy-700)); color: #fff; text-align: center; position: relative; overflow: hidden; }
.cta::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(500px 260px at 50% -20%, rgba(240,160,32,.18), transparent 70%); }
.cta h2 { font-size: clamp(26px, 3.6vw, 40px); font-weight: 800; margin-bottom: 16px; position: relative; }
.cta h2 .gold { color: var(--gold-400); }
.cta p { font-size: 16px; color: rgba(255,255,255,.75); max-width: 640px; margin: 0 auto 36px; position: relative; }
.cta .btn-primary { position: relative; font-size: 16px; }
.cta-tagline { margin-top: 30px; font-size: 13px; color: rgba(255,255,255,.5); letter-spacing: 3px; position: relative; }
.cta-contact { position: relative; display: flex; gap: 18px; justify-content: center; margin-top: 40px; flex-wrap: wrap; }
.contact-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: 16px; padding: 24px 38px; min-width: 260px; text-align: center; transition: all .3s; text-decoration: none; color: #fff; }
.contact-card:hover { background: rgba(255,255,255,.1); border-color: rgba(240,160,32,.45); transform: translateY(-3px); }
.contact-card .c-ico { font-size: 27px; margin-bottom: 8px; }
.contact-card .c-label { font-size: 12px; color: rgba(255,255,255,.55); letter-spacing: 2px; margin-bottom: 7px; }
.contact-card .c-value { font-size: 21px; font-weight: 800; letter-spacing: 1px; color: var(--gold-400); }
.contact-card .c-sub { font-size: 12px; color: rgba(255,255,255,.45); margin-top: 6px; }

/* ===================== 联系表单 ===================== */
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; margin-top: 44px; align-items: start; }
.form-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 34px 32px; box-shadow: var(--shadow); }
.form-card h3 { font-size: 19px; color: var(--ink-900); margin-bottom: 6px; }
.form-card .form-sub { font-size: 13.5px; color: var(--ink-500); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 700; color: var(--ink-700); margin-bottom: 7px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 12px 15px; border: 1px solid var(--border); border-radius: 10px; font-family: var(--font); font-size: 14px; color: var(--ink-900); background: var(--bg-light); transition: all .25s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--blue-500); background: #fff; box-shadow: 0 0 0 3px rgba(200,16,46,.12); }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-tip { font-size: 12px; color: var(--ink-500); margin-top: 10px; }
.info-cards { display: flex; flex-direction: column; gap: 16px; }
.info-card { display: flex; gap: 16px; background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 24px; }
.info-card .ic-ico { width: 46px; height: 46px; border-radius: 12px; background: linear-gradient(135deg, rgba(200,16,46,.12), rgba(200,16,46,.22)); display: flex; align-items: center; justify-content: center; font-size: 21px; flex-shrink: 0; }
.info-card b { display: block; font-size: 15px; color: var(--ink-900); margin-bottom: 4px; }
.info-card p { font-size: 13.5px; color: var(--ink-500); }
.info-card p a { color: var(--blue-500); text-decoration: none; font-weight: 700; font-size: 15px; }

/* ===================== 页脚 ===================== */
footer { background: var(--navy-900); color: rgba(255,255,255,.6); padding: 48px 24px 32px; }
footer .wrap { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 28px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand .logo-mark { width: 34px; height: 34px; flex-shrink: 0; display: block; border-radius: 8px; }
.footer-brand b { color: #fff; font-size: 15px; }
footer .foot-links { display: flex; gap: 18px; flex-wrap: wrap; }
footer .foot-links a { color: rgba(255,255,255,.6); text-decoration: none; font-size: 13.5px; }
footer .foot-links a:hover { color: var(--gold-400); }
footer .foot-info { font-size: 13px; text-align: right; line-height: 1.9; }
footer .foot-info .slogan { color: var(--gold-400); font-weight: 700; letter-spacing: 1px; }

/* ===================== 动画 ===================== */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; } .reveal.d3 { transition-delay: .24s; }

/* ===================== 侧边浮动 ===================== */
.float-bar { position: fixed; right: 18px; bottom: 90px; z-index: 900; display: flex; flex-direction: column; gap: 10px; }
.float-bar a { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; text-decoration: none; box-shadow: 0 8px 24px rgba(29,17,20,.22); transition: all .3s; font-size: 22px; }
.float-bar a:hover { transform: translateY(-3px) scale(1.05); }
.float-bar .f-tel { background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); color: #7a4a00; }
.float-bar .f-wechat { background: linear-gradient(135deg, #2fd9a0, #1aa87a); color: #fff; }
.float-bar .f-totop { background: var(--navy-800); color: #fff; font-size: 18px; display: none; }

/* ===================== 响应式 ===================== */
@media (max-width: 1024px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; padding-top: 140px; }
  .services-grid, .trust-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .pain-grid { grid-template-columns: repeat(2, 1fr); }
  .philosophy-grid { grid-template-columns: 1fr; }
  .service-metrics { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  section { padding: 72px 18px; }
  .nav-util { display: none; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--navy-900); flex-direction: column; padding: 12px 20px 20px; gap: 4px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .nav-links.show { display: flex; }
  .nav-item { width: 100%; }
  .nav-top { width: 100%; }
  .nav-drop { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; background: rgba(255,255,255,.05); border-radius: 10px; margin: 2px 0 6px 12px; min-width: 0; padding: 4px 8px; border: 0; }
  .nav-drop::before { display: none; }
  .nav-drop a { color: rgba(255,255,255,.72); font-size: 13px; padding: 9px 12px; text-decoration: none; }
  .nav-drop a:hover { background: rgba(255,255,255,.08); color: #fff !important; }
  .nav-links > a { padding: 12px 14px; }
  .nav-top { width: 100%; padding: 12px 14px !important; }
  .menu-btn { display: block; }
  .services-grid, .trust-grid, .case-grid, .pain-grid, .features-grid { grid-template-columns: 1fr; }
  .philosophy-box { padding: 40px 26px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
  .float-chip { right: 8px; }
  footer .wrap { flex-direction: column; align-items: flex-start; }
  footer .foot-info { text-align: left; }
  .steps { grid-template-columns: 1fr; }
  .step-arrow { display: none; }
  .ai-vs { grid-template-columns: 1fr; gap: 12px; }
  .ai-vs-mid { padding: 4px 0; }
  .vs-mid { padding: 4px 0; }
  .form-row { grid-template-columns: 1fr; }
  .page-hero { padding-top: 120px; }
}

/* ==========================================================================
   V5.0 专用样式 · 工厂AI抢单挖润服务商
   ========================================================================== */

/* ---------- Hero 记忆句 ---------- */
.hero-memo { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.memo-item { font-size: 17px; font-weight: 800; color: var(--gold-400); letter-spacing: 1px; }
.memo-sep { color: rgba(255,255,255,.35); font-size: 15px; }

/* ---------- Hero 双引擎卡片 ---------- */
.engine-group { margin-bottom: 6px; }
.engine-group.e-gap { margin-top: 16px; padding-top: 14px; border-top: 1px dashed rgba(255,255,255,.16); }
.engine-head { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.engine-head b { font-size: 14.5px; color: #fff; }
.engine-tag { font-size: 11.5px; font-weight: 800; letter-spacing: 1px; padding: 3px 10px; border-radius: 100px; flex-shrink: 0; }
.engine-tag.e-a { background: linear-gradient(135deg, var(--blue-400), var(--blue-500)); color: #fff; }
.engine-tag.e-b { background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); color: #7a4a00; }

/* ---------- 核心认知：增长不一定增利 ---------- */
.cog-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: left; }
.cog-step { position: relative; background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px 26px; transition: all .3s; overflow: hidden; }
.cog-step:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.cog-num { position: absolute; right: 18px; top: 12px; font-size: 46px; font-weight: 900; color: rgba(29,17,20,.06); line-height: 1; }
.cog-ico { font-size: 30px; margin-bottom: 12px; }
.cog-step b { display: block; font-size: 17.5px; color: var(--ink-900); margin-bottom: 9px; }
.cog-step p { font-size: 13.5px; color: var(--ink-500); line-height: 1.85; }
.cog-step.bad { border-color: rgba(230,57,70,.35); }
.cog-step.bad .cog-ico { filter: none; }
.cog-step.bad b { color: var(--red-600); }
.cog-step.good { border: 1px solid var(--border); background: var(--bg-white); box-shadow: 0 12px 32px rgba(240,160,32,.12); }
.cog-step.good::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--gold-400), var(--gold-500)); }
.cog-step.good b { color: var(--navy-800); }
.cog-step.good p { color: var(--ink-600); }

/* ---------- 五大业务卡片 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; text-align: left; }
.biz-card { display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 26px; background: var(--bg-white); transition: all .35s; position: relative; overflow: hidden; text-decoration: none; }
.biz-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--blue-400), var(--blue-500)); opacity: 0; transition: all .35s; }
.biz-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(200,16,46,.25); }
.biz-card:hover::before { opacity: 1; }
.biz-ico { width: 58px; height: 58px; border-radius: 15px; display: flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 18px; background: linear-gradient(135deg, rgba(200,16,46,.12), rgba(200,16,46,.22)); }
.biz-card:nth-child(2) .biz-ico { background: linear-gradient(135deg, rgba(124,92,255,.12), rgba(124,92,255,.22)); }
.biz-card:nth-child(3) .biz-ico { background: linear-gradient(135deg, rgba(240,160,32,.14), rgba(240,160,32,.28)); }
.biz-card:nth-child(4) .biz-ico { background: linear-gradient(135deg, rgba(47,217,160,.12), rgba(47,217,160,.24)); }
.biz-card:nth-child(5) .biz-ico { background: linear-gradient(135deg, rgba(230,57,70,.1), rgba(230,57,70,.2)); }
.biz-card:nth-child(6) .biz-ico { background: linear-gradient(135deg, rgba(124,92,255,.12), rgba(124,92,255,.22)); }
.biz-tag { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: 1px; color: var(--blue-500); background: rgba(200,16,46,.08); padding: 3px 10px; border-radius: 100px; margin-bottom: 12px; align-self: flex-start; }
.biz-card h3 { font-size: 19px; font-weight: 800; color: var(--ink-900); margin-bottom: 6px; }
.biz-slogan { font-size: 13.5px; color: var(--gold-500); font-weight: 700; margin-bottom: 12px; }
.biz-list { list-style: none; margin-bottom: 16px; }
.biz-list li { font-size: 13.5px; color: var(--ink-500); line-height: 2; padding-left: 18px; position: relative; }
.biz-list li::before { content: "▸"; position: absolute; left: 0; color: var(--blue-500); font-weight: 800; }
.biz-link { margin-top: auto; font-size: 13.5px; font-weight: 700; color: var(--blue-500); text-decoration: none; }
.biz-card:hover .biz-link { color: var(--navy-700); }
.biz-cta { border: 2px solid var(--gold-400); background: var(--bg-white); box-shadow: 0 14px 36px rgba(240,160,32,.14); }
.biz-cta::before { background: linear-gradient(90deg, var(--gold-400), var(--gold-500)); }
.biz-cta h3 { color: var(--navy-800); }
.biz-cta .biz-slogan { color: var(--gold-500); }
.biz-cta .biz-list li { color: var(--ink-600); }
.biz-cta .biz-link { color: var(--blue-500); }

/* ---------- 诊断双卡（深色） ---------- */
.diag-section { background: linear-gradient(160deg, var(--navy-900), var(--navy-800) 55%, var(--navy-700)); color: #fff; }
.diag-section .sec-tag { background: rgba(255,255,255,.1); color: var(--gold-400); }
.diag-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; text-align: left; }
.diag-card { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.16); border-radius: 20px; padding: 34px 32px; transition: all .35s; }
.diag-card:hover { transform: translateY(-6px); background: rgba(255,255,255,.1); border-color: rgba(255,255,255,.28); }
.diag-card.gold { background: linear-gradient(135deg, rgba(240,160,32,.16), rgba(240,160,32,.28)); border-color: rgba(240,160,32,.5); }
.diag-ico { font-size: 38px; margin-bottom: 14px; }
.diag-type { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 1px; color: var(--gold-400); background: rgba(240,160,32,.14); padding: 4px 12px; border-radius: 100px; margin-bottom: 14px; }
.diag-card h3 { font-size: 21px; color: #fff; font-weight: 800; margin-bottom: 16px; }
.diag-card ul { list-style: none; margin-bottom: 20px; }
.diag-card ul li { font-size: 14px; color: rgba(255,255,255,.82); line-height: 2; }
.diag-card ul li::before { content: "• "; color: var(--gold-400); font-weight: 800; }
.diag-sol { font-size: 14px; color: rgba(255,255,255,.7); margin-bottom: 8px; }
.diag-sol b { color: var(--gold-400); }
.diag-slogan { font-size: 17px; font-weight: 800; color: var(--gold-400); letter-spacing: 1px; margin-bottom: 20px; }
.btn-sm { padding: 10px 22px; font-size: 13.5px; }
.mt-48.btn-primary { position: relative; }

/* ---------- 信任状大卡 ---------- */
.proof-card { display: grid; grid-template-columns: .8fr 1.2fr; gap: 40px; align-items: center; background: linear-gradient(135deg, var(--navy-900), var(--navy-700)); border-radius: 24px; padding: 48px 52px; color: #fff; position: relative; overflow: hidden; }
.proof-card::before { content: "28%"; position: absolute; right: -20px; bottom: -50px; font-size: 220px; font-weight: 900; color: rgba(255,255,255,.04); letter-spacing: -10px; }
.proof-left { text-align: center; position: relative; z-index: 1; }
.proof-num { font-size: clamp(56px, 7vw, 84px); font-weight: 900; line-height: 1; background: linear-gradient(135deg, var(--gold-400), var(--gold-500)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.proof-title { font-size: 16.5px; font-weight: 700; color: rgba(255,255,255,.85); margin-top: 12px; line-height: 1.6; }
.proof-right { position: relative; z-index: 1; }
.proof-right h3 { font-size: 23px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.proof-right p { font-size: 14.5px; color: rgba(255,255,255,.75); line-height: 1.9; margin-bottom: 18px; }
.proof-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.proof-tags span { font-size: 12.5px; color: var(--gold-400); background: rgba(240,160,32,.12); border: 1px solid rgba(240,160,32,.35); padding: 5px 14px; border-radius: 100px; }

/* ---------- 双主体 ---------- */
.duo-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.duo-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 28px; text-align: left; transition: all .3s; }
.duo-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.duo-ico { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 26px; background: linear-gradient(135deg, rgba(200,16,46,.12), rgba(200,16,46,.22)); margin-bottom: 14px; }
.duo-card:nth-child(2) .duo-ico { background: linear-gradient(135deg, rgba(240,160,32,.14), rgba(240,160,32,.28)); }
.duo-card b { display: block; font-size: 19px; color: var(--ink-900); margin-bottom: 4px; }
.duo-sub { display: block; font-size: 12.5px; font-weight: 700; color: var(--blue-500); margin-bottom: 10px; }
.duo-card:nth-child(2) .duo-sub { color: var(--gold-500); }
.duo-card p { font-size: 13.5px; color: var(--ink-500); line-height: 1.85; }

/* ---------- V5.0 响应式 ---------- */
@media (max-width: 1024px) {
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .cog-steps { grid-template-columns: 1fr; }
  .proof-card { grid-template-columns: 1fr; text-align: center; padding: 40px 30px; }
  .proof-right { text-align: left; }
  .duo-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .biz-grid, .diag-grid { grid-template-columns: 1fr; }
  .proof-card { padding: 34px 24px; }
  .proof-right h3 { font-size: 19px; }
}

/* ---------- V5.0 交付证明卡（方法论验证 + 成果展示） ---------- */
.vrf-head { display: flex; align-items: center; gap: 16px; margin-top: 60px; }
.vrf-head::before, .vrf-head::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, transparent, rgba(200,16,46,.28), transparent); }
.vrf-title { font-size: 13px; font-weight: 800; letter-spacing: .14em; color: var(--ink-500); white-space: nowrap; }
.vrf-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 24px; }
.vrf-card { display: flex; flex-direction: column; border-radius: 18px; padding: 28px 30px; text-decoration: none; transition: all .35s; position: relative; overflow: hidden; }
.vrf-card:hover { transform: translateY(-6px); }
.vrf-dark { background: linear-gradient(135deg, var(--navy-800), var(--navy-900)); border: 1px solid rgba(255,255,255,.1); color: #fff; box-shadow: var(--shadow); }
.vrf-dark:hover { box-shadow: var(--shadow-lg); border-color: rgba(255,255,255,.22); }
.vrf-gold { background: var(--bg-white); border: 2px solid var(--gold-400); color: var(--navy-800); box-shadow: var(--shadow); }
.vrf-gold:hover { box-shadow: var(--shadow-lg); border-color: var(--gold-500); }
.vrf-ico { width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 16px; }
.vrf-dark .vrf-ico { background: rgba(255,255,255,.1); }
.vrf-gold .vrf-ico { background: linear-gradient(135deg, rgba(240,160,32,.14), rgba(240,160,32,.28)); color: var(--navy-800); }
.vrf-tag { display: inline-block; font-size: 11.5px; font-weight: 700; letter-spacing: 1px; padding: 3px 10px; border-radius: 100px; margin-bottom: 12px; align-self: flex-start; }
.vrf-dark .vrf-tag { background: rgba(255,255,255,.12); color: var(--gold-400); }
.vrf-gold .vrf-tag { background: rgba(200,16,46,.08); color: var(--blue-500); }
.vrf-card h3 { font-size: 20px; font-weight: 800; margin-bottom: 6px; }
.vrf-dark h3 { color: #fff; }
.vrf-gold h3 { color: var(--navy-800); }
.vrf-slogan { font-size: 14px; font-weight: 700; margin-bottom: 14px; }
.vrf-dark .vrf-slogan { color: var(--gold-400); }
.vrf-gold .vrf-slogan { color: var(--gold-500); }
.vrf-list { list-style: none; margin-bottom: 18px; }
.vrf-list li { font-size: 13.5px; line-height: 2; padding-left: 18px; position: relative; }
.vrf-dark .vrf-list li { color: rgba(255,255,255,.82); }
.vrf-gold .vrf-list li { color: var(--ink-700); }
.vrf-list li::before { content: "✓"; position: absolute; left: 0; font-weight: 800; }
.vrf-dark .vrf-list li::before { color: var(--gold-400); }
.vrf-gold .vrf-list li::before { color: var(--blue-500); }
.vrf-list strong { font-weight: 800; }
.vrf-dark .vrf-list strong { color: var(--gold-400); }
.vrf-gold .vrf-list strong { color: var(--red-600); }
.vrf-link { margin-top: auto; font-size: 14px; font-weight: 800; text-decoration: none; }
.vrf-dark .vrf-link { color: var(--gold-400); }
.vrf-gold .vrf-link { color: var(--blue-500); }
.vrf-card:hover .vrf-link { text-decoration: underline; }

/* ---------- 安索夫矩阵 ---------- */
.ansoff-matrix { display: grid; grid-template-columns: 100px 1fr 1fr; gap: 14px; max-width: 860px; margin: 0 auto; text-align: left; }
.ansoff-head { display: contents; }
.ansoff-corner { border-radius: 12px 0 0 0; }
.ansoff-col-h { background: var(--navy-800); color: #fff; font-size: 15px; font-weight: 700; padding: 14px 18px; border-radius: 12px 12px 0 0; text-align: center; }
.ansoff-row { display: contents; }
.ansoff-row-h { background: var(--navy-800); color: #fff; font-size: 15px; font-weight: 700; padding: 14px 12px; border-radius: 12px 0 0 12px; display: flex; align-items: center; justify-content: center; text-align: center; }
.ansoff-cell { background: var(--bg-white); border: 1px solid var(--border); border-radius: 14px; padding: 22px 24px; transition: all .3s; }
.ansoff-cell:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.ansoff-cell.real { border: 2px solid var(--blue-500); background: linear-gradient(135deg, rgba(200,16,46,.04), rgba(200,16,46,.08)); }
.ansoff-cell.fake { border: 1px dashed rgba(100,116,139,.45); background: rgba(241,245,249,.6); }
.ansoff-cell b { display: block; font-size: 17px; color: var(--ink-900); margin-bottom: 4px; }
.ansoff-cell span { display: block; font-size: 12px; color: var(--gold-500); font-weight: 700; margin-bottom: 10px; }
.ansoff-cell p { font-size: 13.5px; color: var(--ink-600); line-height: 1.75; margin-bottom: 12px; }
.ansoff-tag { display: inline-block; font-size: 11.5px; color: var(--ink-500); background: var(--bg-light); border: 1px solid var(--border); padding: 4px 12px; border-radius: 100px; }
.ansoff-cell.real .ansoff-tag { color: var(--blue-500); border-color: rgba(200,16,46,.25); background: rgba(200,16,46,.06); }

/* ---------- 营销八大浪费 ---------- */
.waste-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: left; }
.waste-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 24px; transition: all .3s; position: relative; overflow: hidden; }
.waste-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(200,16,46,.25); }
.waste-top { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.waste-num { font-size: 28px; font-weight: 900; color: rgba(29,17,20,.08); line-height: 1; }
.waste-ico { width: 42px; height: 42px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 20px; background: linear-gradient(135deg, rgba(200,16,46,.12), rgba(200,16,46,.22)); margin-left: auto; }
.waste-card b { display: block; font-size: 16.5px; color: var(--ink-900); margin-bottom: 10px; }
.waste-card p { font-size: 13px; color: var(--ink-500); line-height: 1.8; margin-bottom: 14px; }
.waste-fix { font-size: 12.5px; color: var(--ink-700); background: var(--bg-light); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; line-height: 1.65; }

@media (max-width: 1024px) {
  .ansoff-matrix { grid-template-columns: 80px 1fr 1fr; }
  .waste-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .ansoff-matrix { grid-template-columns: 60px 1fr 1fr; gap: 8px; }
  .ansoff-col-h, .ansoff-row-h { font-size: 12px; padding: 10px 8px; }
  .ansoff-cell { padding: 14px 14px; }
  .ansoff-cell b { font-size: 14px; }
  .ansoff-cell p { font-size: 12px; }
  .waste-grid { grid-template-columns: 1fr; }
  .vrf-grid { grid-template-columns: 1fr; }
  .vrf-head::before, .vrf-head::after { display: none; }
  .vrf-head { justify-content: center; }
}

/* 案例区说明小字（联合交付/脱敏声明） */
.case-note{margin-top:24px;text-align:center;font-size:14px;color:#8a8f98;line-height:1.8}

/* ============ 全站案例推广悬浮位（WZD-2025-01 · 280天陪跑实录） ============ */
/* ① 顶部通栏：贴导航栏下方，fixed，红金渐变 */
.wz-promo-top{position:fixed;left:0;right:0;top:103px;z-index:999;
  background:linear-gradient(90deg,var(--blue-500),var(--blue-400) 58%,var(--gold-500));
  color:#fff;padding:11px 52px 11px 20px;text-align:center;font-size:14.5px;
  box-shadow:0 6px 24px rgba(200,16,46,.30);display:none;align-items:center;justify-content:center;gap:14px}
.wz-promo-top.show{display:flex;animation:wzSlideDown .45s ease}
@keyframes wzSlideDown{from{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}
.wz-promo-top b{font-weight:800;letter-spacing:.3px}
.wz-promo-top .wz-go{background:#fff;color:var(--blue-500);padding:6px 16px;border-radius:8px;
  font-weight:800;font-size:13.5px;white-space:nowrap;transition:.2s}
.wz-promo-top .wz-go:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(0,0,0,.2)}
.wz-promo-top .wz-x{position:absolute;right:14px;top:50%;transform:translateY(-50%);
  color:#fff;opacity:.85;cursor:pointer;font-size:20px;line-height:1;padding:0 4px}
.wz-promo-top .wz-x:hover{opacity:1}

/* ② 左下角悬浮卡：避开右下角 float-bar，信息量最大 */
.wz-promo-card{position:fixed;right:20px;top:160px;z-index:998;width:296px;
  background:linear-gradient(150deg,var(--navy-900),var(--navy-700));color:#fff;
  border-radius:16px;padding:18px 18px 16px;box-shadow:0 18px 48px rgba(29,17,20,.42);
  border:1px solid rgba(255,196,77,.28);display:none}
.wz-promo-card.show{display:block;animation:wzPopIn .5s cubic-bezier(.2,.9,.3,1.3)}
@keyframes wzPopIn{from{transform:translateY(24px) scale(.94);opacity:0}to{transform:translateY(0) scale(1);opacity:1}}
.wz-promo-card .wz-tag{display:inline-block;background:linear-gradient(135deg,var(--gold-500),var(--gold-400));
  color:#7a4a06;font-size:11.5px;font-weight:800;padding:3px 10px;border-radius:6px;margin-bottom:9px}
.wz-promo-card h4{font-size:16.5px;margin-bottom:7px;line-height:1.45;color:#fff}
.wz-promo-card h4 em{color:var(--gold-400);font-style:normal;font-weight:800}
.wz-promo-card p{font-size:12.8px;opacity:.82;margin-bottom:13px;line-height:1.65;color:#fff}
.wz-promo-card .wz-go{display:block;background:linear-gradient(135deg,var(--blue-500),var(--blue-400));
  color:#fff;text-align:center;padding:10px;border-radius:10px;font-weight:800;font-size:14px;transition:.2s}
.wz-promo-card .wz-go:hover{filter:brightness(1.1)}
.wz-promo-card .wz-note{font-size:11px;opacity:.55;margin-top:9px;text-align:center;color:#fff}
.wz-promo-card .wz-x{position:absolute;right:10px;top:8px;color:#fff;opacity:.5;cursor:pointer;
  font-size:19px;line-height:1;padding:2px 5px}
.wz-promo-card .wz-x:hover{opacity:1}

@media(max-width:900px){
  .wz-promo-top{font-size:12.5px;padding:9px 44px 9px 12px;gap:8px;text-align:left}
  .wz-promo-top .wz-go{padding:5px 10px;font-size:12px}
  .wz-promo-card{left:12px;right:12px;width:auto}
}

/* 案例讲解会（揭秘）交付物展示 */
.unlock-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:1000px;margin:30px auto 0}
.unlock-grid div{background:rgba(255,255,255,.08);border:1px solid rgba(255,196,77,.35);
  border-radius:14px;padding:18px 14px;text-align:center;color:#fff;font-weight:800;font-size:15px}
.unlock-grid div small{display:block;margin-top:6px;font-weight:400;font-size:12px;opacity:.75}
@media(max-width:900px){.unlock-grid{grid-template-columns:repeat(2,1fr)}}