/* =====================================================================
   前台展示端样式：公告条 / 导航 / Hero / 栏目 / 页脚
   ===================================================================== */

/* ------------------------------ 公告条 ------------------------------ */
/* 公告条在 DOM 中位于导航之后（site.js 先 prepend announce 再 prepend nav），
   若层级高于 sticky 导航会直接压住导航下拉菜单的顶部区域，
   因此这里必须低于 --z-nav，让吸顶导航始终位于最上层。 */
.announce {
  position: relative; z-index: calc(var(--z-nav) - 1);
  background: var(--g-dark);
  color: #cfe0ff;
  font-size: .85rem;
  overflow: hidden;
}
.announce-inner {
  max-width: var(--container-wide); margin: 0 auto;
  padding: 9px var(--sp-5);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
}
.announce-items { display: flex; align-items: center; gap: var(--sp-4); flex-wrap: wrap; }
.announce-item {
  color: #cfe0ff; opacity: .88;
  transition: color var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
  position: relative;
}
.announce-item + .announce-item::before {
  content: ""; position: absolute; left: calc(var(--sp-4) / -2); top: 50%;
  width: 1px; height: 12px; transform: translateY(-50%);
  background: rgba(255,255,255,.24);
}
.announce-item:hover { color: #fff; opacity: 1; }
.announce-cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 16px; border-radius: var(--r-full);
  background: var(--g-brand); color: #fff; font-weight: 600; font-size: .82rem;
  white-space: nowrap;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.announce-cta:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(47,107,255,.4); }

/* ------------------------------ 导航 ------------------------------ */
.nav {
  position: sticky; top: 0; z-index: var(--z-nav);
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--c-border); box-shadow: var(--sh-sm); }
.nav-inner {
  max-width: var(--container-wide); margin: 0 auto;
  padding: 0 var(--sp-5); height: var(--nav-h);
  display: flex; align-items: center; gap: var(--sp-5);
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.16rem; letter-spacing: -.01em; flex-shrink: 0; }
.logo-mark {
  width: 32px; height: 32px; border-radius: 9px;
  background: var(--g-brand);
  display: grid; place-items: center; color: #fff; font-size: .95rem; font-weight: 800;
  box-shadow: var(--sh-brand);
}
.nav-menu { display: flex; align-items: center; gap: 2px; flex: 1; }
.nav-item { position: relative; }
.nav-link {
  display: flex; align-items: center; gap: 4px;
  padding: 8px 13px; border-radius: var(--r-sm);
  font-size: .93rem; font-weight: 550; color: var(--c-text-2);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.nav-link:hover, .nav-item.is-open .nav-link { color: var(--c-primary); background: rgba(47,107,255,.07); }
.nav-link .caret { width: 10px; height: 10px; transition: transform var(--dur-fast) var(--ease); }
.nav-item.is-open .caret { transform: rotate(180deg); }

.dropdown {
  position: absolute; top: calc(100% + 10px); left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 460px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-lg);
  padding: 10px;
  /* 下拉面板可能伸到导航容器之外，必须在导航自身的层叠上下文内置于最上层，
     否则会被后方的公告条 / 首屏内容覆盖 */
  z-index: var(--z-drop);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease), visibility var(--dur-fast);
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px;
}
.nav-item.is-open .dropdown { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0); }
.dropdown-item {
  display: flex; gap: 11px; align-items: flex-start;
  padding: 11px 12px; border-radius: var(--r-md);
  transition: background var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.dropdown-item:hover { background: var(--c-surface-2); transform: translateX(3px); }
.dropdown-icon {
  width: 34px; height: 34px; flex-shrink: 0;
  border-radius: 10px; background: rgba(47,107,255,.09); color: var(--c-primary);
  display: grid; place-items: center; font-size: .95rem;
}
.dropdown-title { font-size: .9rem; font-weight: 640; color: var(--c-text); line-height: 1.4; }
.dropdown-desc { font-size: .78rem; color: var(--c-text-3); line-height: 1.5; margin-top: 2px; }

.nav-actions { display: flex; align-items: center; gap: var(--sp-3); flex-shrink: 0; }
.nav-toggle { display: none; width: 40px; height: 40px; border-radius: var(--r-sm); place-items: center; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--c-text); border-radius: 2px; position: relative; transition: background var(--dur-fast) var(--ease); }
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--c-text); border-radius: 2px;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle.is-active span { background: transparent; }
.nav-toggle.is-active span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.is-active span::after { top: 0; transform: rotate(-45deg); }

/* ------------------------------ Hero ------------------------------ */
.hero {
  position: relative;
  background: var(--g-dark);
  color: #fff;
  overflow: hidden;
  padding: clamp(56px, 9vw, 120px) 0 clamp(48px, 7vw, 96px);
  isolation: isolate;
}
.hero-bg { position: absolute; inset: -10% 0; z-index: -2; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(120,160,255,.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,160,255,.09) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 30%, transparent 78%);
  opacity: var(--grid-opacity, .35);
}
.hero-glow {
  position: absolute; border-radius: 50%; filter: blur(90px); z-index: -2; pointer-events: none;
}
.hero-glow-1 { width: 520px; height: 520px; top: -160px; right: -80px; background: rgba(47,107,255,.36); }
.hero-glow-2 { width: 420px; height: 420px; bottom: -180px; left: -60px; background: rgba(124,92,255,.28); }
.hero-glow-3 { width: 340px; height: 340px; top: 30%; left: 45%; background: rgba(0,194,168,.2); }
.fx-particles { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }

.hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 15px; border-radius: var(--r-full);
  background: rgba(255,255,255,.09); border: 1px solid rgba(255,255,255,.16);
  font-size: .82rem; color: #b9cbff; letter-spacing: .04em;
  backdrop-filter: blur(8px);
}
.hero-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); box-shadow: 0 0 0 4px rgba(0,194,168,.2); }
.hero-title { font-size: clamp(2.3rem, 5.6vw, 4.1rem); line-height: 1.12; letter-spacing: -.025em; font-weight: 800; margin: var(--sp-5) 0 var(--sp-4); }
.hero-sub { font-size: clamp(1rem, 1.4vw, 1.16rem); color: #b8c6e6; line-height: 1.82; max-width: 640px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-6); }
.hero-stats { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: var(--sp-4); margin-top: var(--sp-7); }
.hero-stat-value { font-size: clamp(1.5rem, 2.6vw, 2.1rem); font-weight: 800; letter-spacing: -.02em; background: var(--g-text); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-stat-label { font-size: .82rem; color: #8fa3c8; margin-top: 2px; }
.hero-trust { display: flex; flex-wrap: wrap; gap: var(--sp-2) var(--sp-5); margin-top: var(--sp-6); padding-top: var(--sp-5); border-top: 1px solid rgba(255,255,255,.1); }
.hero-trust-item { display: inline-flex; align-items: center; gap: 7px; font-size: .84rem; color: #93a7cc; }
.hero-trust-item svg { color: var(--c-accent); flex-shrink: 0; }

/* Hero 右侧看板 */
.hero-panel {
  position: relative;
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.13);
  border-radius: var(--r-xl);
  padding: var(--sp-5);
  backdrop-filter: blur(18px);
  box-shadow: 0 30px 70px rgba(0,0,0,.4);
}
.hero-panel::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(140deg, rgba(255,255,255,.32), transparent 45%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  pointer-events: none;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-4); }
.panel-title { font-size: .92rem; font-weight: 650; color: #dbe6ff; }
.panel-live { display: inline-flex; align-items: center; gap: 6px; font-size: .74rem; color: #7ef0dd; }
.panel-live .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--c-accent); animation: pulseDot 1.8s infinite; }
@keyframes pulseDot { 0%,100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0,194,168,.5); } 50% { opacity: .6; box-shadow: 0 0 0 6px rgba(0,194,168,0); } }
.pipeline { display: flex; flex-direction: column; gap: 9px; }
.pipeline-node {
  display: flex; align-items: center; gap: 11px;
  padding: 11px 13px; border-radius: var(--r-md);
  background: rgba(255,255,255,.045);
  border: 1px solid rgba(255,255,255,.07);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.pipeline-node:hover { transform: translateX(5px); background: rgba(255,255,255,.08); border-color: rgba(120,160,255,.3); }
.pipeline-icon { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; font-size: .85rem; flex-shrink: 0; }
.pipeline-name { font-size: .86rem; font-weight: 600; color: #dce6ff; }
.pipeline-meta { font-size: .74rem; color: #8497bd; }
.pipeline-time { margin-left: auto; font-size: .72rem; color: #7ef0dd; white-space: nowrap; }

/* ------------------------------ 通用栏目 ------------------------------ */
.section-head { text-align: center; max-width: 720px; margin: 0 auto var(--sp-7); }
.section-head.left { text-align: left; margin-left: 0; }
.section-eyebrow {
  display: inline-block; font-size: .8rem; font-weight: 650; letter-spacing: .1em;
  color: var(--c-primary); text-transform: uppercase; margin-bottom: var(--sp-3);
}
.section-desc { margin-top: var(--sp-4); color: var(--c-text-2); font-size: 1.02rem; }

/* 三类客户入口 */
.client-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--sp-5); }
.client-card {
  position: relative; overflow: hidden;
  /* 纵向弹性列：卡片等高时三个 CTA 用 margin-top:auto 落到同一条基线上 */
  display: flex; flex-direction: column;
  padding: var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.client-card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; opacity: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 0%), rgba(47,107,255,.09), transparent 62%);
  transition: opacity var(--dur) var(--ease); pointer-events: none;
}
.client-card:hover { transform: translateY(-6px); box-shadow: var(--sh-lg); border-color: rgba(47,107,255,.28); }
.client-card:hover::after { opacity: 1; }
.client-icon {
  width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center;
  font-size: 1.3rem; margin-bottom: var(--sp-4);
  background: var(--g-brand); color: #fff; box-shadow: var(--sh-brand);
}
.client-title { font-size: 1.22rem; font-weight: 700; margin-bottom: var(--sp-2); }
.client-desc { color: var(--c-text-2); font-size: .93rem; min-height: 48px; }
.client-points { margin: var(--sp-4) 0 var(--sp-5); display: flex; flex-direction: column; gap: 9px; }
.client-point { display: flex; align-items: flex-start; gap: 9px; font-size: .89rem; color: var(--c-text-2); }
.client-point svg { color: var(--c-ok); flex-shrink: 0; margin-top: 4px; }
/* 三个 CTA 铺满卡片内容宽度 —— 卡片等宽时按钮左右边缘自然对齐、文字居中 */
.client-cta { margin-top: auto; }

/* 五大能力 */
.cap-grid { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: var(--sp-4); }
.cap-card {
  position: relative; overflow: hidden;
  padding: var(--sp-5) var(--sp-4);
  border-radius: var(--r-lg);
  background: var(--c-surface); border: 1px solid var(--c-border);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.cap-card:hover { transform: translateY(-5px); box-shadow: var(--sh-md); }
.cap-icon {
  width: 44px; height: 44px; border-radius: 13px; display: grid; place-items: center;
  font-size: 1.2rem; margin-bottom: var(--sp-4); color: #fff;
}
.cap-title { font-size: 1.04rem; font-weight: 680; margin-bottom: var(--sp-2); }
.cap-desc { font-size: .85rem; color: var(--c-text-2); min-height: 66px; line-height: 1.65; }
.cap-bullets { margin: var(--sp-3) 0 var(--sp-4); display: flex; flex-direction: column; gap: 6px; }
.cap-bullet { font-size: .8rem; color: var(--c-text-3); display: flex; gap: 7px; align-items: flex-start; }
.cap-bullet::before { content: "▸"; color: var(--c-primary); font-weight: 700; }
.cap-price {
  padding-top: var(--sp-3); border-top: 1px dashed var(--c-border);
  font-size: .78rem; color: var(--c-text-3); line-height: 1.5;
}
.cap-price b { color: var(--c-primary); font-size: .88rem; }

/* 案例 */
.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--sp-5); }
.case-card {
  display: flex; flex-direction: column; overflow: hidden;
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-lg);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.case-card:hover { transform: translateY(-5px); box-shadow: var(--sh-lg); }
.case-cover {
  position: relative; aspect-ratio: 16 / 10;
  background: var(--g-dark);
  display: grid; place-items: center;
  overflow: hidden;
}
.case-cover-text {
  font-size: 1.5rem; font-weight: 800; color: rgba(255,255,255,.92);
  padding: var(--sp-4); text-align: center; letter-spacing: -.01em;
}
.case-cover::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(320px circle at 30% 20%, rgba(47,107,255,.42), transparent 62%);
}
.case-cover-badge { position: absolute; top: 12px; left: 12px; z-index: 2; }
.case-body { padding: var(--sp-5); display: flex; flex-direction: column; flex: 1; }
.case-title { font-size: 1.05rem; font-weight: 680; line-height: 1.45; margin: var(--sp-3) 0 var(--sp-2); }
.case-summary { font-size: .88rem; color: var(--c-text-2); line-height: 1.68; flex: 1; }
.case-meta {
  display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: var(--sp-2) var(--sp-3);
  margin-top: var(--sp-4); padding-top: var(--sp-4); border-top: 1px solid var(--c-border);
}
.case-meta-item { font-size: .78rem; }
.case-meta-label { color: var(--c-text-3); display: block; }
.case-meta-value { color: var(--c-text); font-weight: 600; }
.case-foot { display: flex; align-items: center; justify-content: space-between; margin-top: var(--sp-4); gap: var(--sp-3); }
.case-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.case-tag { font-size: .72rem; padding: 3px 9px; border-radius: var(--r-full); background: var(--c-surface-2); color: var(--c-text-3); }
.case-notice {
  margin-top: var(--sp-6); padding: var(--sp-4) var(--sp-5);
  background: rgba(247,144,9,.08); border: 1px dashed rgba(247,144,9,.35);
  border-radius: var(--r-md); font-size: .87rem; color: #a35c00;
  display: flex; align-items: center; gap: 10px;
}

/* 定价 */
.price-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: var(--sp-5); align-items: stretch; }
.price-card {
  position: relative; padding: var(--sp-6);
  display: flex; flex-direction: column;
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-lg);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.price-card.is-hot { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(47,107,255,.1), var(--sh-md); }
.price-hot-tag {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  padding: 4px 14px; border-radius: var(--r-full);
  background: var(--g-brand); color: #fff; font-size: .74rem; font-weight: 650;
  box-shadow: var(--sh-brand); white-space: nowrap;
}
.price-audience { font-size: .8rem; color: var(--c-primary); font-weight: 650; }
.price-name { font-size: 1.28rem; font-weight: 720; margin: var(--sp-2) 0 var(--sp-3); }
.price-range { font-size: 1.5rem; font-weight: 800; letter-spacing: -.02em; }
.price-note { font-size: .8rem; color: var(--c-text-3); margin-top: 4px; }
.price-features { margin: var(--sp-5) 0; display: flex; flex-direction: column; gap: 11px; }
.price-feature { display: flex; gap: 9px; align-items: flex-start; font-size: .88rem; color: var(--c-text-2); }
.price-feature svg { color: var(--c-ok); flex-shrink: 0; margin-top: 4px; }
/* 4 档价格卡 + 2 张说明卡 = 3×2 满行，说明卡顶到卡片底部与「获取方案」按钮齐平 */
.price-card > .btn { margin-top: auto; }

/* 定价补充说明卡（非报价档位，独立类名，不计入 .price-card 计数） */
.price-aux {
  position: relative; padding: var(--sp-6);
  display: flex; flex-direction: column;
  border-radius: var(--r-lg);
  background: var(--c-surface);
  border: 1px dashed rgba(47,107,255,.32);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.price-aux:hover { transform: translateY(-4px); box-shadow: var(--sh-md); border-color: rgba(47,107,255,.5); }
.price-aux-icon {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  font-size: 1.2rem; margin-bottom: var(--sp-4);
  background: rgba(47,107,255,.1); color: var(--c-primary);
}
.price-aux-title { font-size: 1.06rem; font-weight: 700; margin-bottom: var(--sp-4); }
.price-aux-list { display: flex; flex-direction: column; gap: var(--sp-3); }
.price-aux-item {
  display: flex; flex-direction: column; gap: 3px;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-sm);
  background: var(--c-surface-2);
}
.price-aux-key { font-size: .76rem; color: var(--c-text-3); }
.price-aux-val { display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-3); }
.price-aux-val b { font-size: .9rem; font-weight: 650; color: var(--c-text); }
.price-aux-val em { font-style: normal; font-size: .82rem; color: var(--c-primary); font-weight: 650; white-space: nowrap; }
/* 说明卡 A：各档计价口径原文（来自 priceNote） */
.price-aux-note { display: flex; flex-direction: column; gap: 4px; margin-top: 6px; padding-top: 7px; border-top: 1px dashed rgba(47,107,255,.22); }
.price-aux-note i { font-style: normal; font-size: .78rem; line-height: 1.6; color: var(--c-text-3); }
.price-aux-note u { text-decoration: none; font-weight: 650; color: var(--c-text-2); margin-right: 6px; }
.price-aux-terms { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px var(--sp-4); }
.price-aux-term { display: flex; align-items: center; gap: 8px; font-size: .86rem; color: var(--c-text-2); }
.price-aux-term svg { color: var(--c-ok); flex-shrink: 0; }
/* 说明卡 B：各档「超出计费」原文 */
.price-aux-block { margin-top: var(--sp-4); padding-top: var(--sp-4); border-top: 1px dashed rgba(47,107,255,.22); }
.price-aux-sub { font-size: .78rem; font-weight: 650; letter-spacing: .04em; color: var(--c-text-2); margin-bottom: 8px; }
.price-aux-rules { display: flex; flex-direction: column; gap: 7px; }
.price-aux-rule { display: flex; gap: 8px; align-items: baseline; font-size: .78rem; line-height: 1.6; color: var(--c-text-3); }
.price-aux-rule-name { flex-shrink: 0; font-weight: 650; color: var(--c-text-2); }
.price-aux-foot {
  margin-top: auto; padding-top: var(--sp-4);
  font-size: .8rem; line-height: 1.65; color: var(--c-text-3);
}

/* 流程 */
.process-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  column-gap: var(--pgap);
  row-gap: var(--sp-7);
  --pgap: var(--sp-6);
}
.process-step { position: relative; z-index: 1; text-align: center; }
.process-num {
  width: 60px; height: 60px; margin: 0 auto var(--sp-4);
  border-radius: 50%; display: grid; place-items: center;
  position: relative; z-index: 1;
  background: var(--c-surface); border: 2px solid var(--c-border);
  font-size: 1.2rem; font-weight: 800; color: var(--c-text-3);
  transition: all var(--dur) var(--ease);
}
.process-step.is-active .process-num { background: var(--g-brand); border-color: transparent; color: #fff; box-shadow: var(--sh-brand); transform: scale(1.08); }
/* 逐段连接线：本步圆心右侧 → 下一步圆心，圆圈背景自然遮住线头 */
.process-line {
  position: absolute; z-index: 0;
  top: 29px; left: 50%;
  width: calc(100% + var(--pgap));
  height: 2px; background: var(--c-border);
}
.process-line-fill {
  position: absolute; inset: 0;
  background: var(--g-brand);
  transform-origin: left center; transform: scaleX(0);
  transition: transform .8s var(--ease-out);
}
.process-step.is-active .process-line-fill { transform: scaleX(1); }
/* 每行末位（3 的倍数）不画向右的连接线，避免伸出网格 */
.process-step:nth-child(3n) .process-line { display: none; }
.process-title { font-size: 1.02rem; font-weight: 680; margin-bottom: var(--sp-2); }
.process-desc { font-size: .85rem; color: var(--c-text-2); line-height: 1.65; }
.process-duration { display: inline-block; margin-top: var(--sp-3); font-size: .76rem; padding: 3px 11px; border-radius: var(--r-full); background: var(--c-surface-2); color: var(--c-text-3); }

/* FAQ */
.faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--sp-3); }
.faq-item {
  background: var(--c-surface); border: 1px solid var(--c-border); border-radius: var(--r-md);
  overflow: hidden; transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.faq-item.is-open { border-color: rgba(47,107,255,.32); box-shadow: var(--sh-sm); }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5); text-align: left; font-size: .98rem; font-weight: 620;
}
.faq-icon { flex-shrink: 0; width: 24px; height: 24px; border-radius: 50%; background: var(--c-surface-2); color: var(--c-primary); display: grid; place-items: center; transition: transform var(--dur) var(--ease), background var(--dur) var(--ease); }
.faq-item.is-open .faq-icon { transform: rotate(45deg); background: var(--c-primary); color: #fff; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height var(--dur-slow) var(--ease); }
.faq-a-inner { padding: 0 var(--sp-5) var(--sp-5); font-size: .92rem; color: var(--c-text-2); line-height: 1.8; }

/* CTA + 表单 */
.cta-band { position: relative; overflow: hidden; background: var(--g-dark); color: #fff; }
.cta-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(32px, 5vw, 64px); align-items: stretch; }
/* 左栏改为弹性列：内容上对齐，渠道卡片网格贴到与右侧表单底部齐平 */
.cta-left { display: flex; flex-direction: column; justify-content: flex-start; }
.cta-title { font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 780; line-height: 1.24; letter-spacing: -.02em; }
.cta-sub { color: #a8bade; margin-top: var(--sp-4); line-height: 1.8; }
.cta-points { margin-top: var(--sp-5); display: flex; flex-direction: column; gap: 10px; }
.cta-point { display: flex; align-items: center; gap: 10px; color: #c4d3f0; font-size: .92rem; }
.cta-point svg { color: var(--c-accent); flex-shrink: 0; }
/* 中段引导块：撑满左栏中段空白，内容垂直居中分配剩余空间 */
.cta-guide {
  margin-top: var(--sp-6);
  flex: 1;
  display: flex; flex-direction: column; justify-content: center;
  padding: var(--sp-5) var(--sp-5) var(--sp-4);
  border-radius: var(--r-md);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
}
.cta-guide-label { font-size: .78rem; letter-spacing: .08em; color: #7f93ba; margin-bottom: var(--sp-4); }
.cta-guide-list { display: flex; flex-direction: column; gap: var(--sp-4); }
.cta-guide-item { display: flex; align-items: flex-start; gap: 12px; }
.cta-guide-icon {
  width: 30px; height: 30px; border-radius: 10px; flex-shrink: 0;
  display: grid; place-items: center;
  background: rgba(47,107,255,.2); color: #9fc0ff;
}
.cta-guide-body { min-width: 0; }
.cta-guide-title { font-size: .9rem; font-weight: 650; color: #e3ecff; }
.cta-guide-desc { font-size: .8rem; line-height: 1.6; color: #8fa3c7; margin-top: 2px; }
/* 直接联系区块：占满左栏剩余高度，消除左下大片空白 */
.cta-contact-block { margin-top: auto; padding-top: var(--sp-6); }
.cta-contact-label { font-size: .78rem; letter-spacing: .08em; color: #7f93ba; margin-bottom: var(--sp-3); }
.cta-channels { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: var(--sp-3); }
.cta-channel {
  display: flex; align-items: flex-start; gap: 11px;
  padding: var(--sp-4);
  border-radius: var(--r-md);
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.cta-channel:hover { background: rgba(255,255,255,.09); border-color: rgba(127,163,255,.4); transform: translateY(-2px); }
.cta-channel-icon {
  width: 34px; height: 34px; border-radius: 11px; flex-shrink: 0;
  display: grid; place-items: center;
  background: rgba(47,107,255,.22); color: #9fc0ff;
}
.cta-channel-body { min-width: 0; }
.cta-channel-title { font-size: .74rem; color: #8fa5cd; }
.cta-channel-value { color: #dbe6ff; font-weight: 600; font-size: .88rem; margin-top: 2px; word-break: break-all; }
.cta-channel-desc { color: #7f93ba; font-size: .74rem; margin-top: 3px; }
.form-card { background: var(--c-surface); border-radius: var(--r-xl); padding: var(--sp-6); box-shadow: var(--sh-lg); color: var(--c-text); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: var(--sp-4); }
.form-field-full { grid-column: 1 / -1; }
.form-foot { margin-top: var(--sp-5); display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4); flex-wrap: wrap; }
.upload-zone {
  border: 1.5px dashed var(--c-border); border-radius: var(--r-md);
  padding: var(--sp-4); text-align: center; cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.upload-zone:hover, .upload-zone.is-drag { border-color: var(--c-primary); background: rgba(47,107,255,.04); }
.upload-list { margin-top: var(--sp-3); display: flex; flex-direction: column; gap: 6px; }
.upload-item { display: flex; align-items: center; gap: 8px; font-size: .82rem; color: var(--c-text-2); padding: 6px 10px; background: var(--c-surface-2); border-radius: var(--r-xs); }

/* 页脚 */
.footer { background: var(--c-dark); color: #94a5c4; padding: clamp(44px, 6vw, 72px) 0 0; }
.footer-top { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: clamp(28px, 4vw, 56px); }
.footer-brand .logo { color: #fff; margin-bottom: var(--sp-4); }
.footer-intro { font-size: .88rem; line-height: 1.85; max-width: 320px; }
.footer-contact { margin-top: var(--sp-5); display: flex; flex-direction: column; gap: 9px; }
.footer-contact-item { display: flex; gap: 9px; align-items: center; font-size: .86rem; }
.footer-contact-item svg { color: var(--c-primary-light); flex-shrink: 0; }
.footer-title { color: #fff; font-size: .95rem; font-weight: 650; margin-bottom: var(--sp-4); }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-link { font-size: .87rem; color: #94a5c4; transition: color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease); }
.footer-link:hover { color: #fff; transform: translateX(3px); }
.footer-bottom {
  margin-top: clamp(32px, 4vw, 52px); padding: var(--sp-5) 0;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4); flex-wrap: wrap;
  font-size: .82rem;
}
.footer-legal { display: flex; gap: var(--sp-4); flex-wrap: wrap; }
.footer-legal a:hover { color: #fff; }

/* 回到顶部 */
.to-top {
  position: fixed; right: 22px; bottom: 22px; z-index: 90;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-surface); border: 1px solid var(--c-border);
  box-shadow: var(--sh-md); color: var(--c-text-2);
  display: grid; place-items: center;
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all var(--dur) var(--ease);
}
.to-top.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { color: var(--c-primary); border-color: var(--c-primary); transform: translateY(-3px); }

/* 动效相关样式 */
.fx-cursor { position: fixed; top: 0; left: 0; z-index: var(--z-cursor); pointer-events: none; opacity: 0; transition: opacity .2s; }
.fx-cursor.is-visible { opacity: 1; }
.fx-cursor-dot { position: absolute; width: 6px; height: 6px; border-radius: 50%; background: var(--c-primary); }
.fx-cursor-ring {
  position: absolute; width: 32px; height: 32px; border-radius: 50%;
  border: 1.5px solid rgba(47,107,255,.55);
  transition: transform .18s var(--ease-out), width .18s var(--ease-out), height .18s var(--ease-out), border-color .18s;
}
.fx-cursor.is-hover .fx-cursor-ring { border-color: var(--c-accent); }
.fx-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; background: var(--g-brand); transform: scaleX(0); transform-origin: left; z-index: calc(var(--z-nav) + 5); }

/* 左右对照双栏（首页「关于我们」内嵌块 / 关于页「我们是谁」）
   原来两处都写在内联 style 里，内联优先级高于媒体查询 → 窄屏无法塌成单列，
   右列被左列的 min-content 撑到视口外（实测 390px 下 documentElement.scrollWidth 400 > clientWidth 390）。
   统一收进这个类：桌面维持原比例与间距，≤720px 塌成单列。 */
.split-2 { grid-template-columns: 1.15fr .85fr; gap: 56px; }
.split-2.is-lead { grid-template-columns: 1.1fr .9fr; align-items: center; }

[data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease-out), transform .7s var(--ease-out); }
[data-reveal="left"] { transform: translateX(-26px); }
[data-reveal="right"] { transform: translateX(26px); }
[data-reveal="scale"] { transform: scale(.96); }
[data-reveal].is-revealed { opacity: 1; transform: none; }

/* ------------------------------ 响应式 ------------------------------ */
@media (max-width: 1200px) {
  .cap-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .dropdown { min-width: 400px; }
}
@media (max-width: 980px) {
  .nav-inner { gap: var(--sp-3); }
  .nav-toggle { display: grid; }
  .nav-menu {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: var(--c-surface); border-bottom: 1px solid var(--c-border);
    box-shadow: var(--sh-lg);
    flex-direction: column; align-items: stretch; gap: 0;
    padding: var(--sp-3) var(--sp-4) var(--sp-5);
    max-height: calc(100vh - var(--nav-h)); overflow-y: auto;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: all var(--dur) var(--ease);
  }
  .nav.is-open .nav-menu { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-item { border-bottom: 1px solid var(--c-border); }
  .nav-link { width: 100%; justify-content: space-between; padding: 13px 6px; }
  .dropdown {
    position: static; left: auto; transform: none; opacity: 1; visibility: visible; pointer-events: auto;
    box-shadow: none; border: none; padding: 0 0 var(--sp-3) 10px;
    display: none; grid-template-columns: minmax(0,1fr); min-width: 0;
  }
  /* 展开态选择器特异性高于上面的 .dropdown（0,2,0 > 0,1,0），
     必须在此同权重重置，否则 translateX(-50%) 残留会把面板整体左移半个身宽、溢出视口 */
  .nav-item.is-open .dropdown { display: grid; transform: none; }
  .nav-actions .btn-ghost { display: none; }
  .hero-inner { grid-template-columns: minmax(0,1fr); }
  .hero-panel { display: none; }
  .client-grid, .case-grid, .price-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .cap-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  /* 流程区 3 列 → 2 列：连接线改为逐段绘制，行末（第 2/4/6 步）不画 */
  .process-track { grid-template-columns: repeat(2, minmax(0,1fr)); column-gap: var(--sp-5); row-gap: var(--sp-6); --pgap: var(--sp-5); }
  .process-step:nth-child(3n) .process-line { display: block; }
  .process-step:nth-child(2n) .process-line { display: none; }
  .cta-inner { grid-template-columns: minmax(0,1fr); }
  /* 单列时左栏无需再撑满高度，渠道卡片跟随内容排列 */
  .cta-contact-block { margin-top: var(--sp-6); padding-top: 0; }
  .footer-top { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 720px) {
  .announce-inner { padding: 8px var(--sp-4); font-size: .78rem; }
  .announce-items { gap: var(--sp-3); overflow-x: auto; flex-wrap: nowrap; scrollbar-width: none; }
  .announce-items::-webkit-scrollbar { display: none; }
  .announce-cta { display: none; }
  .hero { padding: 44px 0 56px; }
  .hero-stats { grid-template-columns: repeat(2, minmax(0,1fr)); gap: var(--sp-4); }
  .client-grid, .case-grid, .price-grid, .cap-grid { grid-template-columns: minmax(0,1fr); }
  /* 窄屏双栏塌成单列（与 .grid-2 保持同一响应式节奏）
     .split-2.is-lead 特异性 0,2,0，此处需同权重写才能覆盖 */
  .split-2, .split-2.is-lead { grid-template-columns: minmax(0,1fr); gap: var(--sp-6); }
  /* 窄屏把横向滑入改为纵向滑入：translateX(26px) 的入场位移会把元素推出视口右缘
     （390px 下 translateX 26px − 容器内边距 16px = 溢出 10px），纵向位移不产生横向溢出 */
  [data-reveal="left"], [data-reveal="right"] { transform: translateY(26px); }
  /* 窄屏单列：流程区取消连接线，避免竖排时出现横向错位 */
  .process-track { grid-template-columns: minmax(0,1fr); }
  .process-track .process-step .process-line { display: none; }
  .cta-channels { grid-template-columns: minmax(0,1fr); }
  .form-grid { grid-template-columns: minmax(0,1fr); }
  .footer-top { grid-template-columns: minmax(0,1fr); gap: var(--sp-6); }
  .footer-bottom { flex-direction: column; align-items: flex-start; text-align: left; }
  .fx-cursor { display: none; }
  .to-top { right: 14px; bottom: 14px; }
}
@media (max-width: 480px) {
  .hero-actions .btn { width: 100%; }
}

/* 降低动效：无障碍 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
  .fx-cursor { display: none !important; }
}