/* 灵工 AI Worker 营销页 — dark ink + teal + copper + bone */
:root {
  color-scheme: dark;
  --ink:           #0a0d0f;
  --ink-2:         #111419;
  --graphite:      #12181b;
  --graphite-2:    #182125;
  --graphite-3:    #1d2830;
  --bone:          #f4f0e8;
  --bone-dim:      #d8d4c8;
  --muted:         #b9c0bb;
  --dim:           #77817d;
  --line:          rgba(244, 240, 232, 0.10);
  --line-strong:   rgba(244, 240, 232, 0.18);
  --teal:          #5fd4dc;
  --teal-soft:     rgba(95, 212, 220, 0.18);
  --teal-strong:   #2bb6c4;
  --copper:        #c7a064;
  --copper-soft:   rgba(199, 160, 100, 0.18);
  --ruby:          #d45f57;
  --amber:         #d4a857;
  --green:         #6ec4a3;
  --radius:        8px;
  --radius-sm:     6px;
  --shadow-sm:     0 1px 2px rgba(0,0,0,0.40);
  --shadow-md:     0 6px 24px rgba(0,0,0,0.45);
  --shadow-glow:   0 0 0 1px rgba(95,212,220,0.30), 0 0 18px rgba(95,212,220,0.18);
  --wrap:          1180px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::selection { background: rgba(95,212,220,0.30); color: var(--bone); }
a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--bone); }
img, svg { max-width: 100%; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--dim); }
.small { font-size: 12px; }
.req { color: var(--ruby); }
.grad { background: linear-gradient(120deg, var(--teal), var(--copper)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hl { color: var(--teal); font-weight: 600; }

/* ===== 顶部导航 ===== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,13,15,0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--bone); }
.brand-logo {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--teal) 0%, var(--copper) 100%);
  color: var(--ink);
  display: grid; place-items: center; font-weight: 800; letter-spacing: 0.5px;
  box-shadow: var(--shadow-glow);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-weight: 600; color: var(--bone); font-size: 14px; letter-spacing: 0.5px; }
.brand-sub { color: var(--dim); font-size: 9.5px; letter-spacing: 0.18em; text-transform: uppercase; }
.nav-links { display: flex; gap: 22px; margin-left: 18px; }
.nav-links a { color: var(--bone-dim); font-size: 13px; }
.nav-links a:hover { color: var(--teal); }
.nav-cta { margin-left: auto; display: flex; gap: 10px; }

@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-cta .btn.ghost { display: none; }
}

/* ===== 通用按钮 / chip / kicker ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius);
  font-size: 13px; font-weight: 600;
  border: 1px solid var(--line-strong);
  background: rgba(244,240,232,0.04);
  color: var(--bone);
  cursor: pointer;
  transition: all .18s ease;
}
.btn:hover { border-color: var(--teal); color: var(--teal); }
.btn.primary {
  background: linear-gradient(135deg, var(--teal) 0%, var(--teal-strong) 100%);
  color: var(--ink);
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}
.btn.primary:hover { color: var(--ink); transform: translateY(-1px); }
.btn.ghost { background: transparent; }
.btn.wide { width: 100%; justify-content: center; }
.btn.big { padding: 14px 22px; font-size: 14px; }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(244,240,232,0.04);
  color: var(--bone-dim);
  font-size: 12px;
}
.chip i { width: 12px; height: 12px; }
.chip.ok { color: var(--green); border-color: rgba(110,196,163,0.35); }
.chip.bad { color: var(--ruby); border-color: rgba(212,95,87,0.35); }

.kicker {
  display: inline-block;
  font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--teal);
  padding: 4px 10px;
  border: 1px solid var(--teal-soft);
  border-radius: 999px;
  background: var(--teal-soft);
  margin-bottom: 14px;
}

.sec-head { max-width: 760px; margin: 0 auto 36px; text-align: center; }
.sec-head h2 { font-size: 30px; font-weight: 600; line-height: 1.25; margin: 8px 0 8px; letter-spacing: -0.5px; }
.sec-sub { color: var(--muted); font-size: 14px; }

/* ===== HERO ===== */
.hero { padding: 64px 0 56px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(60% 50% at 80% 0%, rgba(95,212,220,0.10), transparent 70%),
    radial-gradient(50% 40% at 0% 30%, rgba(199,160,100,0.08), transparent 70%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; position: relative; }
.hero-copy .title { font-size: 44px; line-height: 1.12; font-weight: 600; margin: 16px 0 16px; letter-spacing: -1px; }
.hero-copy .lead { color: var(--muted); font-size: 15px; max-width: 560px; }
.hero-actions { display: flex; gap: 12px; margin-top: 24px; }
.metric-strip {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 1px; background: var(--line); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); margin-top: 36px;
}
.metric-strip .m { background: rgba(10,13,15,0.6); padding: 18px 16px; }
.metric-strip .num { font-size: 24px; font-weight: 600; color: var(--teal); letter-spacing: -0.5px; }
.metric-strip .lbl { font-size: 11px; color: var(--dim); letter-spacing: 0.12em; text-transform: uppercase; margin-top: 2px; }

.hero-terminal {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(10,13,15,0.7);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  font-family: "JetBrains Mono", Menlo, Consolas, monospace;
}
.term-bar { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: rgba(244,240,232,0.03); border-bottom: 1px solid var(--line); }
.term-bar .dot { width: 10px; height: 10px; border-radius: 50%; }
.term-bar .dot.r { background: #ff5f57; }
.term-bar .dot.y { background: #febc2e; }
.term-bar .dot.g { background: #28c840; }
.term-bar .t { flex: 1; text-align: center; color: var(--dim); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; }
.term-bar .v { color: var(--dim); font-size: 11px; }
.term-body { padding: 16px 18px; font-size: 12.5px; line-height: 1.7; min-height: 260px; }
.term-body .ln { display: flex; gap: 8px; }
.term-body .ps { color: var(--teal); }
.term-body .cmd { color: var(--bone); }
.term-body .info { color: var(--muted); }
.term-body .ok { color: var(--teal); }
.term-body .warn { color: var(--amber); }
.cursor { animation: blink 1s steps(2) infinite; color: var(--teal); }
@keyframes blink { 50% { opacity: 0; } }

@media (max-width: 880px) {
  .hero { padding: 40px 0; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy .title { font-size: 32px; }
  .metric-strip { grid-template-columns: 1fr; }
}

/* ===== 信任带 ===== */
.trust-band { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(244,240,232,0.02); }
.trust { display: flex; flex-wrap: wrap; gap: 28px 36px; padding: 18px 0; justify-content: center; }
.trust-item { display: flex; align-items: center; gap: 8px; color: var(--bone-dim); font-size: 13px; }
.trust-item i { color: var(--teal); width: 16px; height: 16px; }

/* ===== 能力矩阵 ===== */
.capabilities { padding: 80px 0; }
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cap {
  background: linear-gradient(180deg, rgba(244,240,232,0.03), rgba(244,240,232,0));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  transition: border-color .2s, transform .2s;
}
.cap:hover { border-color: var(--teal); transform: translateY(-2px); }
.cap i { color: var(--teal); width: 22px; height: 22px; }
.cap h3 { margin: 12px 0 6px; font-size: 16px; color: var(--bone); }
.cap p { color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.cap ul { padding-left: 18px; margin: 0; color: var(--bone-dim); font-size: 12.5px; }
.cap ul li { margin: 2px 0; }

@media (max-width: 880px) { .cap-grid { grid-template-columns: 1fr; } }

/* ===== 流水线 ===== */
.workflow { padding: 64px 0; background: linear-gradient(180deg, transparent, rgba(95,212,220,0.04)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.flow { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; counter-reset: step; }
.flow li {
  background: rgba(10,13,15,0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px;
  position: relative;
}
.flow li b { display: block; color: var(--teal); font-size: 13px; margin-bottom: 6px; }
.flow li span { color: var(--bone-dim); font-size: 12.5px; line-height: 1.6; }

@media (max-width: 1000px) { .flow { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .flow { grid-template-columns: 1fr; } }

/* ===== 套餐 ===== */
.pricing { padding: 80px 0; }
.tier-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.tier {
  background: rgba(10,13,15,0.78);
  padding: 24px 22px;
  position: relative;
  display: flex; flex-direction: column;
  transition: background .2s;
}
.tier:hover { background: rgba(17,20,25,0.85); }
.tier.hi {
  background: linear-gradient(180deg, rgba(95,212,220,0.10), rgba(10,13,15,0.85));
  outline: 1px solid var(--teal);
  outline-offset: -1px;
  transform: scale(1.02);
  z-index: 1;
}
.ribbon {
  position: absolute; top: 12px; right: 12px;
  background: var(--teal); color: var(--ink);
  font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px;
}
.tier-h { font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--dim); }
.tier-p { display: flex; align-items: baseline; gap: 4px; margin: 8px 0 4px; }
.tier-p .cur { color: var(--bone-dim); font-size: 16px; }
.tier-p .num { font-size: 38px; font-weight: 700; color: var(--bone); letter-spacing: -1px; }
.tier-p .per { color: var(--dim); font-size: 12px; }
.tier-blurb { color: var(--muted); font-size: 12.5px; margin: 0 0 14px; }
.tier ul { list-style: none; padding: 0; margin: 0 0 18px; flex: 1; }
.tier ul li {
  font-size: 12.5px; color: var(--bone-dim);
  padding: 4px 0 4px 18px;
  position: relative;
}
.tier ul li::before { content: "✓"; color: var(--teal); position: absolute; left: 0; top: 4px; font-size: 11px; }
.tier.hi ul li::before { color: var(--teal); }
.pricing-foot { margin-top: 28px; text-align: center; }
.pricing-foot p { color: var(--muted); font-size: 12.5px; max-width: 880px; margin: 0 auto; }

@media (max-width: 1000px) { .tier-grid { grid-template-columns: repeat(2, 1fr); } .tier.hi { transform: none; } }
@media (max-width: 600px)  { .tier-grid { grid-template-columns: 1fr; } }

/* ===== 合规 / 信任 ===== */
.trust-sec { padding: 80px 0; background: linear-gradient(180deg, transparent, rgba(199,160,100,0.05)); border-top: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; }
.trust-list { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 10px; }
.trust-list li { display: flex; gap: 10px; color: var(--bone-dim); font-size: 13.5px; }
.trust-list i { color: var(--teal); width: 18px; height: 18px; flex: none; }
.trust-illu { display: grid; place-items: center; }
.ring {
  width: 280px; height: 280px;
  border-radius: 50%;
  background:
    conic-gradient(from -90deg, var(--teal), var(--copper), var(--teal));
  display: grid; place-items: center;
  position: relative;
  animation: rotate 16s linear infinite;
  box-shadow: 0 0 64px rgba(95,212,220,0.18);
}
.ring::before {
  content: ""; position: absolute; inset: 14px; border-radius: 50%;
  background: var(--ink);
}
.ring-inner { position: relative; z-index: 1; text-align: center; }
.ring-inner .big { font-size: 56px; font-weight: 700; color: var(--teal); letter-spacing: -2px; }
.ring-inner > div:nth-child(2) { color: var(--bone-dim); font-size: 13px; letter-spacing: 0.2em; text-transform: uppercase; }
.ring-inner .sub { color: var(--dim); font-size: 11px; margin-top: 6px; }
@keyframes rotate { to { transform: rotate(360deg); } }

@media (max-width: 880px) { .trust-grid { grid-template-columns: 1fr; } }

/* ===== 留资 / 演示 ===== */
.contact { padding: 80px 0; }
.contact-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: start; }
.cta-copy h2 { font-size: 30px; font-weight: 600; line-height: 1.2; margin: 8px 0 12px; letter-spacing: -0.5px; }
.cta-list { list-style: none; padding: 0; margin: 18px 0; display: grid; gap: 10px; }
.cta-list li { display: flex; gap: 10px; color: var(--bone-dim); font-size: 13.5px; }
.cta-list i { color: var(--copper); width: 18px; height: 18px; flex: none; }
.dl { margin-top: 28px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(244,240,232,0.03); }
.dl h3 { margin: 0 0 6px; font-size: 16px; color: var(--bone); }
.dl p { color: var(--muted); font-size: 12.5px; margin: 0 0 12px; }
.dl .muted.small { margin-top: 10px; }

.lead-form { background: rgba(10,13,15,0.78); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 24px 22px; }
.lead-form h3 { margin: 0 0 14px; font-size: 16px; color: var(--bone); }
.lead-form label { display: block; font-size: 12.5px; color: var(--bone-dim); margin: 0 0 14px; }
.lead-form input, .lead-form select, .lead-form textarea {
  width: 100%; margin-top: 6px;
  padding: 9px 12px;
  background: var(--ink-2);
  color: var(--bone);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font: inherit; font-size: 13px;
  outline: none;
  transition: border-color .15s;
}
.lead-form input:focus, .lead-form select:focus, .lead-form textarea:focus { border-color: var(--teal); }
.lead-form textarea { resize: vertical; min-height: 80px; }
.lead-form .check { display: flex; gap: 8px; align-items: flex-start; color: var(--dim); font-size: 12px; }
.lead-form .check input { width: auto; margin: 2px 0 0; }
.lead-form button { margin-top: 6px; }
.lead-out { margin-top: 12px; font-size: 12.5px; color: var(--teal); min-height: 16px; }
.lead-out.bad { color: var(--ruby); }

@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }

/* ===== 页脚 ===== */
.foot { border-top: 1px solid var(--line); background: var(--ink-2); margin-top: 60px; padding: 40px 0 20px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.foot h4 { color: var(--bone); font-size: 13px; margin: 0 0 12px; letter-spacing: 0.1em; text-transform: uppercase; }
.foot a { display: block; color: var(--bone-dim); font-size: 12.5px; padding: 3px 0; }
.foot a:hover { color: var(--teal); }
.brand-foot { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.foot-bot { display: flex; justify-content: space-between; margin-top: 30px; padding-top: 18px; border-top: 1px solid var(--line); }

@media (max-width: 880px) { .foot-grid { grid-template-columns: repeat(2, 1fr); } }
/* ===== HERO 球体节点背景 ===== */
.hero { position: relative; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
#heroCanvas { width: 100%; height: 100%; display: block; }
.hero-bg-mask {
  position: absolute; inset: 0;
  background:
    radial-gradient(60% 50% at 80% 0%, rgba(95,212,220,0.10), transparent 70%),
    radial-gradient(50% 40% at 0% 30%, rgba(199,160,100,0.08), transparent 70%),
    linear-gradient(180deg, rgba(10,13,15,0.55), rgba(10,13,15,0.85));
}
.hero-grid { position: relative; z-index: 1; }
@media (prefers-reduced-motion: reduce) {
  #heroCanvas { display: none; }
  .hero-bg-mask { background: rgba(10,13,15,0.6); }
}

/* ===== 入场动画（IntersectionObserver 触发 .is-in） ===== */
.reveal { opacity: 0; transform: translate3d(0, 24px, 0); transition: opacity .8s ease, transform .8s ease; will-change: opacity, transform; }
.reveal.is-in { opacity: 1; transform: translate3d(0, 0, 0); }
.reveal[data-reveal="right"] { transform: translate3d(24px, 0, 0); }
.reveal[data-reveal="right"].is-in { transform: translate3d(0, 0, 0); }
.reveal[data-reveal="left"]  { transform: translate3d(-24px, 0, 0); }
.reveal[data-reveal="left"].is-in  { transform: translate3d(0, 0, 0); }
.reveal[data-reveal="scale"] { transform: scale(0.96); }
.reveal[data-reveal="scale"].is-in { transform: scale(1); }

/* 错峰入场 */
.tier-grid .tier:nth-child(1) { transition-delay: 0.00s; }
.tier-grid .tier:nth-child(2) { transition-delay: 0.08s; }
.tier-grid .tier:nth-child(3) { transition-delay: 0.16s; }
.tier-grid .tier:nth-child(4) { transition-delay: 0.24s; }
.cap-grid .cap:nth-child(1) { transition-delay: 0.00s; }
.cap-grid .cap:nth-child(2) { transition-delay: 0.06s; }
.cap-grid .cap:nth-child(3) { transition-delay: 0.12s; }
.cap-grid .cap:nth-child(4) { transition-delay: 0.18s; }
.cap-grid .cap:nth-child(5) { transition-delay: 0.24s; }
.cap-grid .cap:nth-child(6) { transition-delay: 0.30s; }
.flow li:nth-child(1) { transition-delay: 0.00s; }
.flow li:nth-child(2) { transition-delay: 0.10s; }
.flow li:nth-child(3) { transition-delay: 0.20s; }
.flow li:nth-child(4) { transition-delay: 0.30s; }
.flow li:nth-child(5) { transition-delay: 0.40s; }

/* ===== 工作流步骤 ===== */
.step {
  background: linear-gradient(180deg, rgba(244,240,232,0.03), rgba(244,240,232,0));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  position: relative;
  display: flex; flex-direction: column;
  min-height: 180px;
  transition: border-color .2s, transform .2s;
}
.step:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.step .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  border-radius: 999px;
  background: rgba(95,212,220,0.10);
  border: 1px solid rgba(95,212,220,0.40);
  color: var(--teal);
  font-family: "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 13px; font-weight: 600;
  margin-bottom: 12px;
}
.step h3 { font-size: 15px; font-weight: 600; margin: 0 0 6px; color: var(--bone); }
.step p  { font-size: 13px; line-height: 1.55; color: var(--muted); margin: 0; }

/* ===== 联系方式 ===== */
.contact-grid { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 880px) { .contact-grid { grid-template-columns: 1fr; } }
.item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 18px 20px;
  background: linear-gradient(180deg, rgba(244,240,232,0.03), rgba(244,240,232,0));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .2s;
}
.item:hover { border-color: var(--line-strong); }
.item > i {
  color: var(--teal);
  width: 28px; height: 28px;
  flex: 0 0 28px;
  padding: 4px;
  border-radius: 6px;
  background: rgba(95,212,220,0.10);
}
.item .lbl { font-size: 12px; color: var(--dim); margin-bottom: 4px; letter-spacing: 0.04em; }
.item .v   { font-size: 16px; color: var(--bone); font-weight: 500; }

/* ===== 留资表单 ===== */
.lead-form .row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
  margin-bottom: 16px;
}
.lead-form .row .col { min-width: 0; }
.lead-form .row .col.wide { grid-column: 1 / -1; }
.lead-form .col label { display: block; font-size: 12px; color: var(--bone-dim); margin: 0 0 6px; font-weight: 500; }
.lead-form .col input,
.lead-form .col textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--ink-2);
  color: var(--bone);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  box-sizing: border-box;
}
.lead-form .col input::placeholder,
.lead-form .col textarea::placeholder { color: var(--dim); }
.lead-form .col input:focus,
.lead-form .col textarea:focus {
  border-color: var(--teal-strong);
  box-shadow: 0 0 0 3px rgba(95,212,220,0.12);
}
.lead-form .actions {
  display: flex; align-items: center; gap: 14px;
  margin-top: 18px;
}
@media (max-width: 880px) {
  .lead-form .row { grid-template-columns: 1fr; }
}

/* ===== FAQ / 合规列表 ===== */
.trust-list li {
  position: relative;
  padding: 16px 18px 16px 22px;
  background: linear-gradient(180deg, rgba(244,240,232,0.03), rgba(244,240,232,0));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}
.trust-list li::before {
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--teal), var(--copper));
  border-radius: var(--radius) 0 0 var(--radius);
}
.trust-list li strong { color: var(--bone); font-weight: 600; margin-right: 4px; }

/* ===== 工作流步骤之间的连接线（桌面端） ===== */
@media (min-width: 881px) {
  .flow .step::after {
    content: "";
    position: absolute;
    right: -7px; top: 50%;
    width: 14px; height: 1px;
    background: var(--line-strong);
    transform: translateY(-50%);
  }
  .flow .step:last-child::after { display: none; }
}


/* ===== 信任带 ===== */
.trust-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(95,212,220,0.03), rgba(199,160,100,0.03)),
    rgba(244,240,232,0.02);
  position: relative;
}
.trust-band::before,
.trust-band::after {
  content: "";
  position: absolute;
  top: 50%; transform: translateY(-50%);
  width: 8px; height: 8px;
  border-radius: 999px;
  background: var(--teal);
  box-shadow: 0 0 12px rgba(95,212,220,0.6);
}
.trust-band::before { left: 0; }
.trust-band::after  { right: 0; }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  align-items: stretch;
}
.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px 16px;
  color: var(--bone-dim);
  position: relative;
  gap: 8px;
}
.trust-item + .trust-item::before {
  content: "";
  position: absolute;
  left: 0; top: 22%; bottom: 22%;
  width: 1px;
  background: var(--line);
}
.trust-item .num {
  font-family: "JetBrains Mono", Menlo, Consolas, monospace;
  font-size: 38px;
  font-weight: 600;
  color: var(--teal);
  letter-spacing: -1px;
  line-height: 1;
  text-shadow: 0 0 18px rgba(95,212,220,0.18);
}
.trust-item .lbl {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-top: 2px;
  font-weight: 500;
}
@media (max-width: 880px) {
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-item:nth-child(3)::before { display: none; }
  .trust-item .num { font-size: 30px; }
}

/* ===== 修复 contact 4 列布局 ===== */
.contact-grid { grid-template-columns: repeat(4, 1fr); gap: 16px; }
.contact-grid .item { padding: 18px 16px; }
.contact-grid .item .v { font-size: 14px; line-height: 1.5; }
@media (max-width: 1100px) { .contact-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px)  { .contact-grid { grid-template-columns: 1fr; } }

/* ===== Pricing section: 4 tiers / STARTER featured / ghost + primary CTA ===== */
.pricing h2 { margin-bottom: 8px; }
.pricing-foot p strong { color: var(--bone); font-weight: 600; }
.tier.featured {
  background: linear-gradient(180deg, rgba(95,212,220,0.10), rgba(10,13,15,0.85));
  outline: 1px solid var(--teal);
  outline-offset: -1px;
  transform: scale(1.02);
  z-index: 1;
}
.tier-desc {
  color: var(--muted);
  font-size: 12.5px;
  margin: 0 0 14px;
  min-height: 32px;
}
.tier-cta {
  margin-top: auto;
  padding-top: 6px;
}
.btn.block {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 11px 18px;
  font-weight: 600;
}
/* Override .btn.ghost { display: none } so ghost shows as outlined button in tier cards */
.tier .btn.ghost,
.nav-cta .btn.ghost {
  display: inline-flex;
  background: transparent;
  border-color: var(--line-strong);
  color: var(--bone);
}
.tier .btn.ghost:hover {
  background: rgba(244,240,232,0.04);
  border-color: var(--teal);
  color: var(--teal);
}
.tier-p .num {
  font-size: 42px;
  font-weight: 600;
  letter-spacing: -1px;
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  line-height: 1;
}
@media (max-width: 1000px) {
  .tier.featured { transform: none; }
}


/* ===== Enterprise tier: text-mode price (e.g. by-request quote) ===== */
.tier-p.text .num {
  font-family: inherit;
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1;
}
.tier-p.text .per {
  font-size: 13px;
  color: var(--dim);
  margin-left: 4px;
}