/* =========================================================
   龙虾智能 ClawAI · 火山方舟 ArkClaw 智能体服务商官网
   设计系统 / 全站共享样式
   主题：火山科技蓝 + 小龙虾珊瑚色点缀
   ========================================================= */

/* ---------- 设计变量 ---------- */
:root {
  /* 品牌色 */
  --blue:        #1664ff;
  --blue-700:    #0e47cc;
  --blue-500:    #2b7bff;
  --blue-300:    #6aa0ff;
  --blue-100:    #e7efff;
  --navy:        #07112e;
  --navy-2:      #0a1640;
  --claw:        #ff6a4d;   /* 小龙虾珊瑚色 */
  --claw-soft:   #ffe7e1;

  /* 中性色 */
  --ink:     #0b1430;
  --body:    #475069;
  --muted:   #6b7793;
  --line:    #e6ecf7;
  --surface:    #ffffff;
  --surface-2:  #f4f7fe;
  --surface-3:  #eef3fc;

  /* 渐变 */
  --grad-blue: linear-gradient(135deg, #1664ff 0%, #3b82f6 50%, #2bd4ff 100%);
  --grad-cta:  linear-gradient(120deg, #0e47cc 0%, #1664ff 55%, #5b8cff 100%);
  --grad-hero: radial-gradient(1200px 600px at 75% -10%, rgba(43,212,255,.22), transparent 60%),
               radial-gradient(900px 600px at 10% 10%, rgba(91,140,255,.28), transparent 55%),
               linear-gradient(160deg, #06102b 0%, #0a1846 55%, #0b2160 100%);

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(17, 38, 90, .06);
  --shadow:    0 16px 40px rgba(17, 38, 90, .10);
  --shadow-lg: 0 30px 70px rgba(10, 26, 80, .22);
  --shadow-blue: 0 20px 50px rgba(22, 100, 255, .28);

  /* 圆角 / 间距 */
  --r-sm: 10px;
  --r:    16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --container: 1200px;

  --font: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont,
          "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
}

/* ---------- 基础重置 ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font);
  color: var(--body);
  background: var(--surface);
  line-height: 1.65;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 { color: var(--ink); line-height: 1.2; font-weight: 800; letter-spacing: -.02em; }

::selection { background: var(--claw); color: #fff; }

/* ---------- 布局工具 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: clamp(64px, 9vw, 120px) 0; }
.section.tight { padding: clamp(48px, 6vw, 80px) 0; }
.center { text-align: center; }
.grid { display: grid; gap: 24px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--blue);
  background: var(--blue-100); padding: 6px 14px; border-radius: 999px;
}
.eyebrow.on-dark { background: rgba(255,255,255,.1); color: #aecbff; }

.section-head { max-width: 720px; margin: 0 auto clamp(36px, 5vw, 60px); text-align: center; }
.section-head h2 { font-size: clamp(28px, 4vw, 44px); margin: 16px 0 14px; }
.section-head p { font-size: clamp(16px, 1.6vw, 19px); color: var(--muted); }

.lead { font-size: clamp(17px, 1.8vw, 20px); color: var(--muted); }

.text-claw { color: var(--claw); }
.text-blue { color: var(--blue); }
.text-grad {
  background: var(--grad-blue);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-weight: 700; font-size: 15px; padding: 14px 26px; border-radius: 999px;
  transition: transform .18s ease, box-shadow .25s ease, background .25s ease, color .2s ease;
  white-space: nowrap; cursor: pointer;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--grad-cta); color: #fff; box-shadow: var(--shadow-blue); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 24px 56px rgba(22,100,255,.4); }
.btn-ghost { background: var(--surface-2); color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { background: #fff; border-color: var(--blue-300); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.btn-light { background: #fff; color: var(--blue-700); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 20px 40px rgba(0,0,0,.18); }
.btn-outline-light { background: rgba(255,255,255,.06); color: #fff; border: 1px solid rgba(255,255,255,.28); }
.btn-outline-light:hover { background: rgba(255,255,255,.14); transform: translateY(-2px); }
.btn-lg { padding: 17px 34px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- 导航 ---------- */
.nav-wrap {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s ease;
}
.nav-wrap.scrolled { box-shadow: var(--shadow-sm); }
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 900; font-size: 19px; color: var(--ink); letter-spacing: -.02em; }
.brand .logo {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  background: var(--grad-blue); box-shadow: var(--shadow-blue); font-size: 20px;
}
.brand small { display: block; font-size: 11px; font-weight: 600; color: var(--muted); letter-spacing: .02em; }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 9px 15px; border-radius: 10px; font-weight: 600; font-size: 15px; color: var(--ink);
  transition: background .18s ease, color .18s ease;
}
.nav-links a:hover { background: var(--surface-2); color: var(--blue); }
.nav-links a.active { color: var(--blue); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-cta .phone { font-weight: 800; color: var(--ink); font-size: 15px; display: inline-flex; align-items: center; gap: 7px; }
.nav-cta .phone svg { width: 17px; height: 17px; color: var(--blue); }

.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 11px; background: var(--surface-2); }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--ink); margin: 4px auto; border-radius: 2px; transition: .25s; }
.mobile-only { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--grad-hero); color: #fff; overflow: hidden; padding: clamp(56px, 8vw, 96px) 0 clamp(72px, 10vw, 120px); }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 56px 56px; mask-image: radial-gradient(900px 500px at 60% 0%, #000, transparent 75%);
  opacity: .6;
}
.hero .blob { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; pointer-events: none; }
.hero .blob.b1 { width: 420px; height: 420px; background: #2bd4ff; top: -120px; right: -60px; animation: float 12s ease-in-out infinite; }
.hero .blob.b2 { width: 360px; height: 360px; background: #5b8cff; bottom: -140px; left: -80px; animation: float 14s ease-in-out infinite reverse; }
.hero .blob.b3 { width: 220px; height: 220px; background: var(--claw); top: 40%; left: 48%; opacity: .25; animation: float 16s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0) translateX(0); } 50% { transform: translateY(-26px) translateX(14px); } }

.hero-grid { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero h1 { color: #fff; font-size: clamp(34px, 5.2vw, 60px); line-height: 1.08; margin: 22px 0 20px; }
.hero h1 .text-grad { background: linear-gradient(120deg,#7fffd4,#5bb8ff,#a9c4ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lead { color: #c4d3f5; max-width: 560px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 26px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 22px; color: #9fb4e0; font-size: 14px; }
.hero-trust span { display: inline-flex; align-items: center; gap: 8px; }
.hero-trust svg { width: 18px; height: 18px; color: #7fffd4; }

.pill {
  display: inline-flex; align-items: center; gap: 9px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.16);
  padding: 7px 14px 7px 8px; border-radius: 999px; font-size: 13.5px; color: #dbe6ff; font-weight: 600;
}
.pill .tag { background: var(--claw); color: #fff; font-weight: 800; padding: 2px 9px; border-radius: 999px; font-size: 12px; }

/* ---------- Agent 控制台 Mockup ---------- */
.console {
  position: relative; z-index: 1;
  background: rgba(11,22,54,.72); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--r-lg); box-shadow: var(--shadow-lg); overflow: hidden;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.console .bar { display: flex; align-items: center; gap: 8px; padding: 13px 16px; border-bottom: 1px solid rgba(255,255,255,.1); }
.console .bar i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.console .bar i:nth-child(1) { background: #ff5f57; }
.console .bar i:nth-child(2) { background: #febc2e; }
.console .bar i:nth-child(3) { background: #28c840; }
.console .bar b { margin-left: 10px; color: #aebbdb; font-size: 13px; font-weight: 600; }
.console .bar b .dot { color: #7fffd4; }
.console .body { padding: 18px; display: grid; gap: 12px; }
.msg { display: flex; gap: 11px; align-items: flex-start; }
.msg .av { width: 30px; height: 30px; border-radius: 9px; flex: 0 0 auto; display: grid; place-items: center; font-size: 15px; }
.msg.user .av { background: rgba(255,255,255,.12); }
.msg.bot .av { background: var(--grad-blue); box-shadow: var(--shadow-blue); }
.msg .bubble { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1); padding: 11px 14px; border-radius: 13px; color: #dde6fb; font-size: 14px; max-width: 100%; }
.msg.user .bubble { background: rgba(91,140,255,.16); border-color: rgba(127,170,255,.3); }
.steps { display: grid; gap: 9px; }
.step-row { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: #cdd9f5; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); padding: 9px 13px; border-radius: 11px; }
.step-row .ic { width: 22px; height: 22px; border-radius: 7px; background: rgba(127,255,212,.16); color: #7fffd4; display: grid; place-items: center; font-size: 12px; flex: 0 0 auto; }
.step-row.run .ic { background: rgba(127,170,255,.2); color: #9fc0ff; }
.step-row .meta { margin-left: auto; font-size: 11.5px; color: #8fa3cf; }
.typing span { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #7fffd4; margin: 0 1px; animation: blink 1.2s infinite; }
.typing span:nth-child(2){ animation-delay: .2s; } .typing span:nth-child(3){ animation-delay: .4s; }
@keyframes blink { 0%,60%,100% { opacity: .25; } 30% { opacity: 1; } }

.hero-float {
  position: absolute; z-index: 3; background: #fff; color: var(--ink); border-radius: var(--r);
  box-shadow: var(--shadow-lg); padding: 13px 16px; display: flex; align-items: center; gap: 12px; font-weight: 700;
  animation: float 9s ease-in-out infinite;
}
.hero-float small { display: block; font-size: 12px; color: var(--muted); font-weight: 600; }
.hero-float .ic { width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; color: #fff; font-size: 18px; }
.hero-float.f1 { top: -6px; left: -28px; }
.hero-float.f1 .ic { background: linear-gradient(135deg,#22c55e,#16a34a); }
.hero-float.f2 { bottom: -22px; right: -18px; animation-direction: reverse; }
.hero-float.f2 .ic { background: var(--grad-blue); }

/* ---------- 客户 Logo 墙 ---------- */
.marquee-wrap { padding: 34px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface-2); overflow: hidden; }
.marquee-label { text-align: center; color: var(--muted); font-size: 14px; margin-bottom: 22px; font-weight: 600; }
.marquee { display: flex; gap: 56px; width: max-content; animation: scroll-x 32s linear infinite; }
.marquee:hover { animation-play-state: paused; }
.marquee .logo-item { display: flex; align-items: center; gap: 10px; color: #7c89a8; font-weight: 800; font-size: 19px; opacity: .8; white-space: nowrap; }
.marquee .logo-item svg { width: 26px; height: 26px; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- 统计数字 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; padding: 28px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .25s; }
.stat:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.stat .num { font-size: clamp(32px, 4vw, 46px); font-weight: 900; color: var(--ink); letter-spacing: -.03em; line-height: 1; }
.stat .num .suffix { font-size: .5em; color: var(--blue); margin-left: 3px; }
.stat .lbl { margin-top: 10px; color: var(--muted); font-weight: 600; font-size: 14.5px; }
.stats.on-dark .stat { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.12); box-shadow: none; }
.stats.on-dark .stat .num { color: #fff; }
.stats.on-dark .stat .num .suffix { color: #7fffd4; }
.stats.on-dark .stat .lbl { color: #a9b8da; }

/* ---------- 卡片 / 能力 ---------- */
.cards { display: grid; gap: 24px; }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg);
  padding: 30px; box-shadow: var(--shadow-sm); transition: transform .22s ease, box-shadow .28s ease, border-color .25s;
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--blue-300); }
.card .ic {
  width: 54px; height: 54px; border-radius: 15px; display: grid; place-items: center;
  background: var(--blue-100); color: var(--blue); margin-bottom: 18px; transition: .25s;
}
.card:hover .ic { background: var(--grad-blue); color: #fff; box-shadow: var(--shadow-blue); transform: rotate(-6deg); }
.card .ic svg { width: 26px; height: 26px; }
.card h3 { font-size: 20px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card .tag-claw { position: absolute; top: 18px; right: 18px; font-size: 11px; font-weight: 800; color: var(--claw); background: var(--claw-soft); padding: 3px 10px; border-radius: 999px; }

/* 场景小卡 */
.scene { display: flex; align-items: center; gap: 14px; padding: 18px 20px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); transition: .2s; }
.scene:hover { border-color: var(--blue-300); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.scene .ic { width: 44px; height: 44px; border-radius: 12px; background: var(--blue-100); color: var(--blue); display: grid; place-items: center; flex: 0 0 auto; }
.scene .ic svg { width: 22px; height: 22px; }
.scene h4 { font-size: 16px; } .scene p { font-size: 13px; color: var(--muted); }

/* ---------- 合作流程 ---------- */
.steps-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; counter-reset: step; }
.process-step { position: relative; padding: 26px 22px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--shadow-sm); }
.process-step .no { font-size: 14px; font-weight: 900; color: #fff; width: 36px; height: 36px; border-radius: 11px; background: var(--grad-blue); display: grid; place-items: center; margin-bottom: 16px; box-shadow: var(--shadow-blue); }
.process-step h4 { font-size: 17px; margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: var(--muted); }
.process-step::after { content: "→"; position: absolute; right: -16px; top: 42px; color: var(--blue-300); font-weight: 900; font-size: 18px; z-index: 2; }
.process-step:last-child::after { display: none; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform .22s, box-shadow .28s; display: flex; flex-direction: column; }
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-card .cover { height: 150px; display: grid; place-items: center; color: #fff; position: relative; overflow: hidden; }
.case-card .cover svg { width: 56px; height: 56px; opacity: .95; position: relative; z-index: 1; }
.case-card .cover::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px); background-size: 26px 26px; opacity: .5; }
.cover.c1 { background: linear-gradient(135deg,#1664ff,#3b82f6); }
.cover.c2 { background: linear-gradient(135deg,#0e47cc,#5b8cff); }
.cover.c3 { background: linear-gradient(135deg,#7c3aed,#a855f7); }
.cover.c4 { background: linear-gradient(135deg,#0891b2,#06b6d4); }
.cover.c5 { background: linear-gradient(135deg,#ea580c,#f97316); }
.cover.c6 { background: linear-gradient(135deg,#059669,#10b981); }
.case-card .pad { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.case-card .industry { font-size: 12.5px; font-weight: 700; color: var(--blue); background: var(--blue-100); padding: 4px 11px; border-radius: 999px; align-self: flex-start; }
.case-card h3 { font-size: 19px; margin: 14px 0 9px; }
.case-card p { font-size: 14.5px; color: var(--muted); flex: 1; }
.case-metrics { display: flex; gap: 18px; margin-top: 18px; padding-top: 18px; border-top: 1px dashed var(--line); }
.case-metrics .m .v { font-size: 22px; font-weight: 900; color: var(--ink); letter-spacing: -.02em; }
.case-metrics .m .v.up { color: #e8341c; } .case-metrics .m .v.down { color: var(--claw); }
.case-metrics .m .k { font-size: 12px; color: var(--muted); }

/* ---------- 特性 / 为什么选我们 ---------- */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 40px; }
.feature { display: flex; gap: 16px; align-items: flex-start; }
.feature .ic { width: 46px; height: 46px; border-radius: 13px; background: var(--blue-100); color: var(--blue); display: grid; place-items: center; flex: 0 0 auto; }
.feature .ic svg { width: 23px; height: 23px; }
.feature h4 { font-size: 17px; margin-bottom: 5px; }
.feature p { font-size: 14.5px; color: var(--muted); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 80px); align-items: center; }

.check-list li { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; font-size: 16px; color: var(--ink); font-weight: 500; }
.check-list li svg { width: 22px; height: 22px; color: #16a34a; flex: 0 0 auto; margin-top: 2px; }

/* ---------- 套餐 / 定价 ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.plan { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 32px 28px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; transition: .25s; }
.plan:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.plan.featured { background: var(--grad-hero); color: #fff; border: none; box-shadow: var(--shadow-lg); position: relative; }
.plan.featured h3, .plan.featured .price { color: #fff; }
.plan.featured .desc, .plan.featured .plan-feats li { color: #c4d3f5; }
.plan .badge-pop { position: absolute; top: 20px; right: 20px; background: var(--claw); color: #fff; font-size: 12px; font-weight: 800; padding: 4px 12px; border-radius: 999px; }
.plan h3 { font-size: 22px; }
.plan .desc { font-size: 14px; color: var(--muted); margin: 8px 0 18px; min-height: 42px; }
.plan .price { font-size: 34px; font-weight: 900; color: var(--ink); letter-spacing: -.02em; }
.plan .price small { font-size: 15px; font-weight: 600; color: var(--muted); }
.plan .plan-feats { margin: 22px 0; display: grid; gap: 12px; flex: 1; }
.plan .plan-feats li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; color: var(--body); }
.plan .plan-feats li svg { width: 19px; height: 19px; color: var(--blue); flex: 0 0 auto; margin-top: 2px; }
.plan.featured .plan-feats li svg { color: #7fffd4; }

/* ---------- FAQ ---------- */
.faq { max-width: 820px; margin: 0 auto; }
.faq-item { border: 1px solid var(--line); border-radius: var(--r); margin-bottom: 14px; background: var(--surface); overflow: hidden; transition: box-shadow .2s; }
.faq-item.open { box-shadow: var(--shadow-sm); border-color: var(--blue-300); }
.faq-q { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; font-weight: 700; color: var(--ink); font-size: 16.5px; width: 100%; text-align: left; }
.faq-q .pm { width: 26px; height: 26px; flex: 0 0 auto; border-radius: 8px; background: var(--surface-2); display: grid; place-items: center; transition: .25s; color: var(--blue); }
.faq-item.open .faq-q .pm { background: var(--blue); color: #fff; transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease; padding: 0 24px; }
.faq-item.open .faq-a { max-height: 320px; padding: 0 24px 22px; }
.faq-a p { color: var(--muted); font-size: 15px; }

/* ---------- CTA 条 ---------- */
.cta-band { background: var(--grad-hero); border-radius: var(--r-xl); padding: clamp(40px, 6vw, 72px); text-align: center; color: #fff; position: relative; overflow: hidden; box-shadow: var(--shadow-lg); }
.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; mask-image: radial-gradient(700px 300px at 50% 0%, #000, transparent 70%); }
.cta-band h2 { color: #fff; font-size: clamp(28px, 4vw, 42px); position: relative; }
.cta-band p { color: #c4d3f5; max-width: 560px; margin: 16px auto 0; position: relative; font-size: 18px; }
.cta-band .hero-actions { justify-content: center; position: relative; }

/* ---------- 表单 ---------- */
.form-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: clamp(28px, 4vw, 44px); box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 700; font-size: 14px; color: var(--ink); margin-bottom: 8px; }
.field label .req { color: var(--claw); }
.field input, .field select, .field textarea {
  width: 100%; padding: 13px 15px; border: 1.5px solid var(--line); border-radius: var(--r-sm);
  font-family: inherit; font-size: 15px; color: var(--ink); background: var(--surface-2); transition: .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue); background: #fff; box-shadow: 0 0 0 4px var(--blue-100); }
.field textarea { resize: vertical; min-height: 96px; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 6px; }
.form-success { display: none; text-align: center; padding: 30px; }
.form-success.show { display: block; }
.form-success .ic { width: 64px; height: 64px; border-radius: 50%; background: #dcfce7; color: #16a34a; display: grid; place-items: center; margin: 0 auto 16px; }
.form-success h3 { color: var(--ink); margin-bottom: 8px; }

/* ---------- 页面头部 banner（内页） ---------- */
.page-hero { background: var(--grad-hero); color: #fff; padding: clamp(56px, 8vw, 96px) 0 clamp(48px, 6vw, 76px); position: relative; overflow: hidden; text-align: center; }
.page-hero::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 50px 50px; mask-image: radial-gradient(800px 400px at 50% 0%, #000, transparent 75%); }
.page-hero h1 { color: #fff; font-size: clamp(32px, 5vw, 52px); position: relative; margin-bottom: 16px; }
.page-hero p { color: #c4d3f5; font-size: clamp(16px, 1.8vw, 20px); max-width: 620px; margin: 0 auto; position: relative; }
.breadcrumb { position: relative; display: inline-flex; gap: 8px; align-items: center; font-size: 14px; color: #9fb4e0; margin-bottom: 18px; }
.breadcrumb a:hover { color: #fff; }

/* ---------- 关于：时间线 / 团队 ---------- */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item::before { content: ""; position: absolute; left: -30px; top: 4px; width: 16px; height: 16px; border-radius: 50%; background: var(--grad-blue); box-shadow: 0 0 0 4px var(--blue-100); }
.tl-item .year { font-weight: 900; color: var(--blue); font-size: 17px; }
.tl-item h4 { font-size: 17px; margin: 4px 0 6px; }
.tl-item p { color: var(--muted); font-size: 14.5px; }

.value-card { text-align: center; padding: 30px 24px; }
.value-card .ic { width: 60px; height: 60px; border-radius: 17px; background: var(--blue-100); color: var(--blue); display: grid; place-items: center; margin: 0 auto 16px; }
.value-card .ic svg { width: 28px; height: 28px; }

/* 资质徽章 */
.cert-badge { display: flex; align-items: center; gap: 14px; padding: 18px 22px; background: var(--surface); border: 1.5px solid var(--blue-100); border-radius: var(--r); box-shadow: var(--shadow-sm); }
.cert-badge .seal { width: 50px; height: 50px; border-radius: 13px; background: var(--grad-blue); color: #fff; display: grid; place-items: center; flex: 0 0 auto; box-shadow: var(--shadow-blue); }
.cert-badge h4 { font-size: 15.5px; } .cert-badge p { font-size: 12.5px; color: var(--muted); }

/* ---------- 页脚 ---------- */
.footer { background: var(--navy); color: #b7c4e3; padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer .brand { color: #fff; margin-bottom: 16px; }
.footer .brand small { color: #8fa0c4; }
.footer-about p { font-size: 14px; color: #93a3c7; max-width: 320px; }
.footer-about .socials { display: flex; gap: 12px; margin-top: 18px; }
.footer-about .socials a { width: 38px; height: 38px; border-radius: 11px; background: rgba(255,255,255,.07); display: grid; place-items: center; color: #b7c4e3; transition: .2s; }
.footer-about .socials a:hover { background: var(--blue); color: #fff; transform: translateY(-3px); }
.footer-about .socials svg { width: 19px; height: 19px; }
.footer-col h5 { color: #fff; font-size: 15px; margin-bottom: 18px; font-weight: 800; }
.footer-col a { display: block; font-size: 14px; color: #93a3c7; padding: 6px 0; transition: .18s; }
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-contact li { font-size: 14px; color: #93a3c7; margin-bottom: 12px; display: flex; gap: 10px; align-items: flex-start; }
.footer-contact li svg { width: 17px; height: 17px; color: var(--blue-300); flex: 0 0 auto; margin-top: 3px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding-top: 26px; font-size: 13px; color: #7d8db0; flex-wrap: wrap; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 解决方案卡片 ---------- */
.card .pain { font-size: 14px; color: var(--muted); margin: 2px 0 6px; }
.card .pain strong { color: var(--ink); }
.sol-list { margin: 12px 0 6px; display: grid; gap: 8px; }
.sol-list li { position: relative; padding-left: 20px; font-size: 14px; color: var(--body); }
.sol-list li::before { content: "▹"; position: absolute; left: 0; color: var(--blue); font-weight: 800; }

/* ---------- 资源：文章卡 / 下载 ---------- */
.post-cat { font-size: 12px; font-weight: 700; color: var(--blue); background: var(--blue-100); padding: 4px 11px; border-radius: 999px; align-self: flex-start; }
.post-meta { display: flex; gap: 14px; align-items: center; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.post-meta .read { margin-left: auto; }
.dl-row { display: flex; align-items: center; gap: 16px; padding: 20px 22px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); transition: .2s; }
.dl-row:hover { border-color: var(--blue-300); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.dl-row .ic { width: 46px; height: 46px; border-radius: 12px; background: var(--blue-100); color: var(--blue); display: grid; place-items: center; flex: 0 0 auto; }
.dl-row .ic svg { width: 23px; height: 23px; }
.dl-row h4 { font-size: 16px; } .dl-row p { font-size: 13px; color: var(--muted); }
.dl-row .btn { margin-left: auto; flex: 0 0 auto; }

/* ---------- 招聘：职位行 ---------- */
.job-row { display: flex; align-items: center; gap: 18px; padding: 22px 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); transition: .2s; flex-wrap: wrap; }
.job-row:hover { border-color: var(--blue-300); box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.job-row h4 { font-size: 17px; }
.job-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.job-tags span { font-size: 12.5px; color: var(--muted); background: var(--surface-2); padding: 4px 11px; border-radius: 999px; }
.job-row .btn { margin-left: auto; flex: 0 0 auto; }
.perk { text-align: left; }
.perk .ic { width: 50px; height: 50px; border-radius: 14px; background: var(--blue-100); color: var(--blue); display: grid; place-items: center; margin-bottom: 14px; }
.perk .ic svg { width: 25px; height: 25px; }
.perk h4 { font-size: 17px; margin-bottom: 6px; }
.perk p { font-size: 14px; color: var(--muted); }

/* ---------- 滚动入场动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; } .reveal.d4 { transition-delay: .32s; }

/* ---------- 响应式 ---------- */
/* 平板及以下：导航收起为汉堡菜单（链接变多后避免换行） */
@media (max-width: 980px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; padding: 14px 24px 22px; box-shadow: var(--shadow); border-bottom: 1px solid var(--line); gap: 2px;
  }
  .nav-links.open a { padding: 13px 14px; border-radius: 10px; }
  .nav-links.open .mobile-only { display: inline-flex; margin-top: 10px; justify-content: center; }
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; max-width: 520px; }
  .split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .cols-3, .cols-4, .case-grid, .plans { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .process-step::after { display: none; }
  .feature-list { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .cols-3, .cols-4, .cols-2, .case-grid, .plans, .stats, .steps-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-float { display: none; }
  .container { padding: 0 18px; }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}