/* ============================================================
   数科职教 SmartCareer 官网设计系统
   深色科技 × 教育感 · 单一强调色天空蓝 #38bdf8
   角标规则：卡片 14px / 输入框 10px / 按钮全圆角（文档化规则）
   动效纪律：仅入场揭示与悬停反馈，尊重 prefers-reduced-motion
   ============================================================ */

:root {
  --bg: #0b1120;
  --bg-2: #0f172a;
  --bg-3: #111827;
  --surface: rgba(30, 41, 59, 0.55);
  --surface-solid: #1e293b;
  --border: rgba(148, 163, 184, 0.14);
  --border-strong: rgba(148, 163, 184, 0.28);
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --text: #f8fafc;
  --text-2: #a9b6c9;
  --text-3: #7d8ba1;
  --green: #34d399;
  --radius: 14px;
  --radius-sm: 10px;
  --nav-h: 68px;
  --container: 1200px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 颗粒噪点，固定层，不参与滚动 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container { width: min(var(--container), 92%); margin: 0 auto; }

section { position: relative; }

/* ---------- 排版 ---------- */

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.02em; font-weight: 800; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--accent);
  flex-shrink: 0;
}

.lede { color: var(--text-2); font-size: 1.05rem; }

.section-pad { padding: clamp(4.5rem, 9vw, 7rem) 0; }

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background 0.25s var(--ease), border-color 0.25s var(--ease);
  white-space: nowrap;
  font-family: var(--font);
}
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #05222e;
  box-shadow: 0 8px 28px rgba(56, 189, 248, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(56, 189, 248, 0.35);
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
}

/* ---------- 顶部导航 ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  background: rgba(11, 17, 32, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
@media (prefers-reduced-transparency: reduce) {
  .nav { background: #0b1120; backdrop-filter: none; }
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.08rem;
  color: var(--text);
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.brand-mark svg { width: 17px; height: 17px; }
.brand small { color: var(--text-3); font-weight: 600; letter-spacing: 0.04em; }

.nav-links { display: flex; align-items: center; gap: 0.2rem; list-style: none; }

.nav-item { position: relative; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.55rem 0.85rem;
  color: var(--text-2);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 8px;
  transition: color 0.2s;
}
.nav-link:hover { color: var(--text); text-decoration: none; }
.nav-link[aria-current="page"] { color: var(--accent); }

.nav-sub {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 190px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}
.nav-item:hover .nav-sub,
.nav-item:focus-within .nav-sub,
.nav-item.open .nav-sub {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-sub a {
  display: block;
  padding: 0.6rem 0.8rem;
  color: var(--text);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: 8px;
}
.nav-sub a:hover { background: var(--accent-soft); text-decoration: none; }
.nav-sub small { display: block; color: var(--text-3); font-weight: 400; }

.nav-cta { display: flex; align-items: center; gap: 0.6rem; }

/* ---------- 产品落地页页眉（独立品牌，不含公司导航） ---------- */
.nav-product .brand-mark { width: 34px; height: 34px; border-radius: 10px; overflow: hidden; }
.nav-product .brand-mark img { width: 100%; height: 100%; object-fit: cover; display: block; }
.nav-product .brand-mark.ghost { background: var(--accent-soft); }
.nav-product .brand-mark.ghost svg { stroke: var(--accent); }
/* 椰子品牌标：米白 tile + 浅棕描边，与小程序 onboarding 同款 */
.nav-product .brand-mark.coconut {
  background: #f3eee2;
  border: 1px solid #d3c6a8;
  padding: 4px;
}
.nav-product .brand-mark.coconut img { object-fit: contain; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  color: var(--text);
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
  place-items: center;
}

/* ---------- 首页 Hero ---------- */

.hero {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: clamp(2rem, 4vw, 4rem) 0;
  background:
    radial-gradient(ellipse 90% 70% at 20% 0%, rgba(56, 189, 248, 0.16), transparent 55%),
    radial-gradient(ellipse 70% 60% at 90% 90%, rgba(99, 102, 241, 0.12), transparent 50%);
  overflow: hidden;
}

.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 3.5rem; align-items: center; }

.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 3.9rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 1.2rem 0 1.3rem;
  max-width: 12ch;
}
.hero h1 .accent {
  background: linear-gradient(135deg, var(--accent), #818cf8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero .lede { max-width: 46ch; margin-bottom: 0; }

.hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-top: 1.8rem; }

/* 2×2 产品菜单（Hero 右侧实组件） */

.menu-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.menu-tile {
  display: block;
  padding: 1.4rem 1.3rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  transition: transform 0.3s var(--ease), border-color 0.3s, background 0.3s;
}
.menu-tile:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.4);
  background: var(--accent-soft);
  text-decoration: none;
}
.menu-tile .t {
  font-weight: 800;
  font-size: 1.08rem;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.menu-tile .t b {
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.1em;
}
.menu-tile p { color: var(--text-2); font-size: 0.88rem; margin-top: 0.35rem; }
.menu-tile .go { color: var(--accent); font-size: 0.85rem; font-weight: 600; margin-top: 0.7rem; display: inline-block; }

/* ---------- 风险条（编辑式列表） ---------- */

.stake-list { list-style: none; }
.stake-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.6rem;
  align-items: baseline;
  padding: 1.7rem 0;
  border-top: 1px solid var(--border);
}
.stake-row:last-child { border-bottom: 1px solid var(--border); }
.stake-row .num {
  font-size: 0.95rem;
  color: var(--text-3);
  font-weight: 700;
  letter-spacing: 0.06em;
}
.stake-row p { color: var(--text-2); font-size: 1.06rem; }

/* ---------- Bento 价值区 ---------- */

.bento { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.bento-cell {
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  border: 1px solid var(--border);
  background: var(--surface);
  min-height: 190px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
}
.bento-cell h3 { font-size: 1.3rem; margin-bottom: 0.4rem; }
.bento-cell p { color: var(--text-2); font-size: 0.95rem; }
.bento-cell .tag {
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.bento-tint {
  background: linear-gradient(160deg, rgba(56, 189, 248, 0.16), rgba(99, 102, 241, 0.1)),
    var(--surface);
}
.bento-photo { padding: 0; overflow: hidden; position: relative; }
.bento-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.bento-photo .cap {
  position: absolute;
  left: 1.2rem;
  bottom: 1rem;
  z-index: 1;
  color: #fff;
  font-weight: 700;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.6);
}
.bento-photo .cap small { display: block; font-weight: 500; opacity: 0.85; }

/* ---------- 大陈述段 ---------- */

.statement {
  text-align: center;
  max-width: 22ch;
  margin: 0 auto;
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.02em;
}
.statement .mark { color: var(--accent); }

/* ---------- 三步计划（时间线） ---------- */

.plan-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  counter-reset: step;
}
.plan-step {
  position: relative;
  padding: 1.6rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}
.plan-step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}
.plan-step h3 { font-size: 1.12rem; margin-bottom: 0.4rem; }
.plan-step p { color: var(--text-2); font-size: 0.93rem; }

/* ---------- 照片卡行 ---------- */

.photo-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.photo-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 4 / 3;
  background: var(--surface-solid);
}
.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.photo-card:hover img { transform: scale(1.05); }
.photo-card .cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.6rem 1rem 0.9rem;
  background: linear-gradient(transparent, rgba(4, 8, 18, 0.85));
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
}
.photo-card .cap small { display: block; font-weight: 500; color: rgba(255, 255, 255, 0.8); font-size: 0.8rem; }

/* ---------- 向导条 ---------- */

.guide-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.guide-empathy { font-size: 1.15rem; color: var(--text); line-height: 1.9; }
.guide-evidence { list-style: none; }
.guide-evidence li {
  padding: 0.9rem 0;
  border-top: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.98rem;
  display: flex;
  gap: 0.8rem;
  align-items: baseline;
}
.guide-evidence li:last-child { border-bottom: 1px solid var(--border); }
.guide-evidence .tick { color: var(--green); font-weight: 800; flex-shrink: 0; }

/* ---------- 免费资料行 ---------- */

.freebies { list-style: none; }
.freebie-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.2rem;
  align-items: center;
  padding: 1.3rem 0.2rem;
  border-top: 1px solid var(--border);
}
.freebie-row:last-child { border-bottom: 1px solid var(--border); }
.freebie-row .who {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.08em;
}
.freebie-row h3 { font-size: 1.05rem; margin: 0.2rem 0 0.2rem; }
.freebie-row p { color: var(--text-3); font-size: 0.88rem; }
.freebie-row .btn { padding: 0.55rem 1.2rem; font-size: 0.9rem; }

/* ---------- FAQ（原生 details，零 JS） ---------- */

.faq-list { max-width: 820px; }
.faq-item {
  border-top: 1px solid var(--border);
  padding: 0.4rem 0;
}
.faq-item:last-of-type { border-bottom: 1px solid var(--border); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1.1rem 0.2rem;
  font-weight: 700;
  font-size: 1.02rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--accent);
  font-weight: 500;
  flex-shrink: 0;
  transition: transform 0.25s var(--ease);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .ans { padding: 0 0.2rem 1.3rem; color: var(--text-2); max-width: 70ch; }

/* ---------- CTA 横幅 ---------- */

.cta-banner {
  padding: clamp(4rem, 8vw, 6rem) 0;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 90% at 50% 100%, rgba(56, 189, 248, 0.14), transparent 60%),
    var(--bg-2);
  border-top: 1px solid var(--border);
}
.cta-banner h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); max-width: 20ch; margin: 0 auto 1rem; }
.cta-banner p { color: var(--text-2); max-width: 44ch; margin: 0 auto 2rem; }
.cta-banner .btn { font-size: 1.05rem; padding: 0.95rem 2rem; }

/* ---------- 内页 Hero ---------- */

.page-hero {
  padding: clamp(3.5rem, 7vw, 5.5rem) 0 clamp(2.5rem, 5vw, 4rem);
  background:
    radial-gradient(ellipse 80% 70% at 15% 0%, rgba(56, 189, 248, 0.14), transparent 55%);
  border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: clamp(2rem, 4.4vw, 3.2rem); max-width: 15ch; margin: 1rem 0 1rem; }
.page-hero .lede { max-width: 52ch; }

.breadcrumb {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-3);
}
.breadcrumb a { color: var(--text-3); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { opacity: 0.5; }

/* ---------- 双栏叙事（产品页 Hero 右侧） ---------- */

.split-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}

.value-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.3rem;
  margin-top: 1.4rem;
}
.value-stack span {
  font-size: 0.82rem;
  color: var(--text-2);
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
}

/* 交互造句组件（真实组件，非截图） */
.write-demo {
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  padding: 1.5rem;
}
.write-demo .q {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.9rem;
  color: var(--text);
}
.write-demo .q b { color: var(--accent); }
.write-demo textarea {
  width: 100%;
  min-height: 96px;
  background: rgba(11, 17, 32, 0.7);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 0.9rem;
  font-family: var(--font);
  font-size: 0.95rem;
  resize: vertical;
}
.write-demo textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.write-demo .row { display: flex; gap: 0.7rem; margin-top: 0.8rem; align-items: center; }
.write-demo .hint { font-size: 0.8rem; color: var(--text-3); }
/* AI 批改反馈区（与小程序反馈页结构一致：三维分 + 总评 + issues + 改进句 + 参考句） */
.fb { margin-top: 1.2rem; animation: fadeUp 0.4s var(--ease); }
.fb-dim { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.9rem; }
.fb-dim-item {
  font-size: 0.88rem;
  color: var(--text-2);
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
}
.fb-dim-item b { font-size: 1.05rem; color: var(--green); margin-right: 0.15rem; }
.fb-dim-item b.low { color: #fbbf24; }
.fb-verdict { color: var(--text); font-size: 0.98rem; margin-bottom: 0.8rem; }
.fb-verdict.fb-error { color: #f87171; }
.fb-issues { list-style: none; margin: 0 0 0.9rem; }
.fb-issues li {
  border-left: 2px solid var(--border-strong);
  padding: 0.5rem 0 0.5rem 0.9rem;
  margin-bottom: 0.6rem;
  color: var(--text-2);
  font-size: 0.92rem;
}
.fb-issues .idx { color: var(--accent); font-weight: 700; margin-right: 0.4rem; }
.fb-issues .chip {
  font-size: 0.72rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0.05rem 0.5rem;
  margin-right: 0.4rem;
}
.fb-issues .seg { color: var(--text); font-weight: 600; }
.fb-issues .sugg { display: block; color: var(--text-3); margin-top: 0.2rem; }
.fb-ref { color: var(--text-2); font-size: 0.95rem; margin-top: 0.5rem; line-height: 1.7; }
.ref-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 0.1rem 0.6rem;
  margin-right: 0.5rem;
  vertical-align: 0.1em;
}
.fb-meta { margin-top: 0.9rem; font-size: 0.78rem; color: var(--text-3); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 规格/报价：卡片网格（非长表格） ---------- */

.spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.spec-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 1.5rem 1.4rem;
}
.spec-card .k { font-size: 0.78rem; color: var(--accent); font-weight: 700; letter-spacing: 0.1em; }
.spec-card .v { font-size: 1.5rem; font-weight: 800; margin: 0.4rem 0 0.3rem; }
.spec-card p { color: var(--text-3); font-size: 0.88rem; }

/* 承诺卡 */
.promise-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.promise-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 1.4rem 1.3rem;
}
.promise-card .fear { color: var(--text-3); font-size: 0.85rem; margin-bottom: 0.4rem; }
.promise-card .yes { color: var(--text); font-weight: 700; font-size: 0.98rem; }

/* ---------- 流程时间线（服务页） ---------- */

.flow { list-style: none; }
.flow li {
  display: grid;
  grid-template-columns: 170px 1fr auto;
  gap: 1.4rem;
  align-items: baseline;
  padding: 1.3rem 0;
  border-top: 1px solid var(--border);
}
.flow li:last-child { border-bottom: 1px solid var(--border); }
.flow .when { font-size: 0.9rem; color: var(--accent); font-weight: 700; }
.flow h3 { font-size: 1.05rem; }
.flow p { color: var(--text-3); font-size: 0.9rem; margin-top: 0.2rem; }
.flow .pay { color: var(--text-2); font-weight: 700; font-size: 0.9rem; }

/* ---------- 案例卡 ---------- */

.case-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
}
.case-card .body { padding: 1.5rem 1.4rem; }
.case-card .who { font-size: 0.75rem; color: var(--accent); font-weight: 700; letter-spacing: 0.08em; }
.case-card h3 { font-size: 1.15rem; margin: 0.4rem 0 0.6rem; }
.case-card p { color: var(--text-2); font-size: 0.93rem; }
.case-card .result {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--green);
  font-weight: 700;
  font-size: 0.92rem;
}

/* ---------- 关于页 2×2 ---------- */

.who-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.who-cell {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 1.6rem 1.4rem;
}
.who-cell h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.who-cell p { color: var(--text-2); font-size: 0.93rem; }

/* ---------- 表单 ---------- */

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.field label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 0.4rem;
  color: var(--text);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: rgba(11, 17, 32, 0.7);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 0.8rem 0.9rem;
  font-family: var(--font);
  font-size: 0.95rem;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
.field .help { font-size: 0.8rem; color: var(--text-3); margin-top: 0.3rem; }
.field.full { grid-column: 1 / -1; }
.form-note { color: var(--green); font-weight: 600; margin-top: 1rem; display: none; }
.form-note.show { display: block; }
.form-note.error { color: #f87171; }

.btn:disabled { opacity: 0.6; cursor: default; transform: none; }

/* ---------- 资料列表 / 博客列表 ---------- */

.resource-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.post-card {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 1.5rem 1.4rem;
  transition: transform 0.3s var(--ease), border-color 0.3s;
}
.post-card:hover { transform: translateY(-4px); border-color: rgba(56, 189, 248, 0.35); }
.post-card .meta { font-size: 0.8rem; color: var(--text-3); display: flex; gap: 0.6rem; flex-wrap: wrap; }
.post-card .meta b { color: var(--accent); font-weight: 600; }
.post-card h3 { font-size: 1.08rem; margin: 0.6rem 0 0.4rem; }
.post-card p { color: var(--text-2); font-size: 0.92rem; }
.post-card a.h2 { display: inline-block; margin-top: 0.8rem; font-weight: 600; font-size: 0.92rem; }

/* ---------- 页脚 ---------- */

.footer {
  border-top: 1px solid var(--border);
  background: #060a14;
  padding: 3.5rem 0 2.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
}
.footer h4 { font-size: 0.85rem; letter-spacing: 0.08em; color: var(--text-3); margin-bottom: 1rem; }
.footer ul { list-style: none; }
.footer li { margin-bottom: 0.55rem; }
.footer a { color: var(--text-2); font-size: 0.92rem; }
.footer a:hover { color: var(--accent); }
.footer .mission { color: var(--text-2); font-size: 0.95rem; margin-top: 0.9rem; max-width: 30ch; }
.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  color: var(--text-3);
  font-size: 0.83rem;
}

/* ---------- 入场揭示 ---------- */

.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */

@media (max-width: 1024px) {
  .hero-grid, .split-hero, .guide-wrap { grid-template-columns: 1fr; gap: 2.5rem; }
  .photo-row { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: #0b1120;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 0.8rem 4%;
    gap: 0.1rem;
  }
  .nav-links.open { display: flex; }
  .nav-sub {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: transparent;
    border: none;
    padding: 0.2rem 0 0.6rem 1rem;
  }
  .nav-item:hover .nav-sub { opacity: 1; }
  .nav-toggle { display: grid; }
  .nav-cta .btn { display: none; }
  /* 产品落地页页眉的按钮在手机上保留 */
  .nav-product .nav-cta .btn { display: inline-flex; }
  .menu-2x2, .bento, .plan-steps, .spec-grid, .promise-grid, .who-grid, .resource-grid,
  .form-grid { grid-template-columns: 1fr; }
  .bento-photo { min-height: 220px; }
  .flow li { grid-template-columns: 1fr; gap: 0.4rem; }
  .hero { min-height: auto; padding: 4.5rem 0 4rem; }
}

/* ---------- 减少动态 ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .fb { animation: none; }
}