/* =====================================================
   萤簇科技 · 官网重设计 v2
   设计语言：墨色底 × 萤火黄绿 × 工程感编辑排版
   ===================================================== */

:root {
  --ink: #1c242f;
  --ink-2: #212b37;
  --panel: #27323f;
  --panel-2: #2e3947;
  --lift: linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0.012));
  --line: rgba(224, 236, 248, 0.11);
  --line-strong: rgba(224, 236, 248, 0.21);
  --text: #f2f6fa;
  --muted: #b4c1ce;
  --faint: #8b9aa9;
  --lime: #c9f26d;
  --lime-2: #a5e85a;
  --lime-dim: rgba(201, 242, 109, 0.14);
  --radius: 14px;
  --mono: ui-monospace, "JetBrains Mono", "Cascadia Mono", Consolas, "Courier New", "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", "Heiti SC", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Source Han Sans SC", "Segoe UI", sans-serif;
  --shell: 1180px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background-color: var(--ink);
  background-image:
    radial-gradient(1200px 620px at 82% -6%, rgba(201, 242, 109, 0.10), transparent 70%),
    radial-gradient(1000px 720px at 4% 22%, rgba(150, 196, 255, 0.07), transparent 68%),
    radial-gradient(900px 700px at 92% 62%, rgba(201, 242, 109, 0.05), transparent 70%);
  background-repeat: no-repeat;
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--lime); color: var(--ink); }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.shell { max-width: var(--shell); margin: 0 auto; padding: 0 28px; }

/* ---------- 通用排版 ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  color: var(--lime);
  text-transform: uppercase;
  margin-bottom: 22px;
}

h1, h2, h3 { line-height: 1.22; font-weight: 700; }

h2 {
  font-size: clamp(30px, 4.4vw, 50px);
  letter-spacing: 0.01em;
}

h2 em, h1 .hl {
  font-style: normal;
  background: linear-gradient(100deg, var(--lime) 10%, #7fd97a 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sec-label {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--faint);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.sec-label span { color: var(--lime); margin-right: 10px; }

.section { padding: 130px 0; position: relative; }

.sec-head { margin-bottom: 64px; max-width: 720px; }
.sec-lead { color: var(--muted); margin-top: 20px; font-size: 16px; max-width: 560px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.btn-primary {
  background: var(--lime);
  color: var(--ink);
  box-shadow: 0 0 0 rgba(201, 242, 109, 0);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px -12px rgba(201, 242, 109, 0.45);
}
.btn-primary span { font-family: var(--mono); }
.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--lime); color: var(--lime); }
.btn-ghost span { transition: transform 0.25s ease; }
.btn-ghost:hover span { transform: translateX(4px); }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(28, 36, 47, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-tile {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: #fff;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.brand-tile img { width: 30px; height: auto; }
.brand-name {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.06em;
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.brand-name small {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--faint);
  font-weight: 400;
}

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  font-size: 14.5px;
  color: var(--muted);
  transition: color 0.2s ease;
  position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.is-active { color: var(--text); }
.nav-links a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 2px;
  border-radius: 2px;
  background: var(--lime);
}
.nav-cta {
  padding: 10px 22px !important;
  border: 1px solid var(--lime);
  border-radius: 999px;
  color: var(--lime) !important;
  font-weight: 600;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}
.nav-cta:hover { background: var(--lime); color: var(--ink) !important; transform: translateY(-1px); }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.nav-toggle i { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }
.nav-toggle.is-open i:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.nav-toggle.is-open i:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 140px 0 90px;
}
#fireflies {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 70% at 60% 40%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 60% 40%, #000 20%, transparent 75%);
  opacity: 0.7;
}
.hero-glow {
  position: absolute;
  width: 900px;
  height: 900px;
  right: -280px;
  top: -160px;
  background: radial-gradient(circle, rgba(201, 242, 109, 0.16) 0%, rgba(201, 242, 109, 0.06) 42%, transparent 70%);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 2; width: 100%; }
.hero-copy { max-width: 760px; }
.hero h1 {
  font-size: clamp(40px, 6.4vw, 82px);
  font-weight: 800;
  letter-spacing: 0.015em;
}
.hero-sub {
  margin-top: 28px;
  font-size: clamp(16px, 1.6vw, 19px);
  color: var(--muted);
  max-width: 560px;
}
.hero-actions { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: clamp(28px, 5vw, 64px);
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats dt {
  font-family: var(--mono);
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 700;
  color: var(--lime);
  line-height: 1.1;
}
.hero-stats dt i { font-style: normal; font-size: 0.42em; margin-left: 4px; color: var(--muted); }
.hero-stats dd { font-size: 13.5px; color: var(--faint); margin-top: 6px; letter-spacing: 0.08em; }

.hero-ticker {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  border-top: 1px solid var(--line);
  background: rgba(28, 36, 47, 0.5);
  backdrop-filter: blur(6px);
  overflow: hidden;
  z-index: 2;
}
.ticker-track {
  display: flex;
  gap: 0;
  width: max-content;
  animation: ticker 36s linear infinite;
}
.ticker-track span {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.22em;
  color: var(--faint);
  padding: 14px 34px;
  white-space: nowrap;
  border-right: 1px solid var(--line);
}
@keyframes ticker { to { transform: translateX(-50%); } }

/* ---------- 客户 ---------- */
.clients { border-bottom: 1px solid var(--line); }
.logo-group { margin-bottom: 48px; }
.logo-group:last-child { margin-bottom: 0; }
.group-title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--faint);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.group-title::after { content: ""; flex: 1; height: 1px; background: var(--line); }

.logo-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}
.logo-wall.is-partners { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
.logo-chip {
  background: #f4f6f8;
  border-radius: 12px;
  height: 68px;
  display: grid;
  place-items: center;
  padding: 14px 20px;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.logo-chip:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 30px -18px rgba(0, 0, 0, 0.8);
}
.logo-chip img { max-height: 36px; max-width: 100%; object-fit: contain; }
.logo-wall.is-partners .logo-chip img { max-height: 30px; }

/* 宽幅客户墙：四行、跨品类、彩色原样呈现 */
.logo-wall.is-wide {
  grid-template-columns: repeat(8, 1fr);
  gap: 10px;
}
.logo-wall.is-wide .logo-chip {
  height: 70px;
  padding: 12px 16px;
  border-radius: 10px;
}
.logo-wall.is-wide .logo-chip img {
  max-height: 34px;
}
.logo-wall.is-wide .logo-chip:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 34px -16px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(201, 242, 109, 0.5);
}
.wall-caption {
  margin-top: 20px;
  font-size: 13px;
  color: var(--faint);
  letter-spacing: 0.04em;
}

.partners {
  margin-top: 46px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}
.partners .group-title { margin-bottom: 20px; }
.partners .logo-wall.is-partners { grid-template-columns: repeat(4, 1fr); max-width: 720px; }

/* ---------- 问题 ---------- */
.why { background: var(--lift); border-bottom: 1px solid var(--line); }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.why-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.why-card:hover { border-color: rgba(201, 242, 109, 0.4); transform: translateY(-4px); }
.why-card b {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  color: var(--faint);
  font-weight: 500;
}
.why-card h3 { font-size: 22px; margin: 16px 0 12px; }
.why-card p { color: var(--muted); font-size: 15px; }

.why-answer {
  margin-top: 44px;
  padding: 30px 36px;
  border: 1px dashed rgba(201, 242, 109, 0.45);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 16.5px;
  background: var(--lime-dim);
}
.why-answer span {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--lime);
  margin-right: 14px;
}

/* ---------- 场景矩阵 ---------- */
.scene-matrix {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 18px;
  align-items: stretch;
}
.scene-list { display: flex; flex-direction: column; gap: 8px; }
.scene-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 15.5px;
  cursor: pointer;
  background: transparent;
  text-align: left;
  transition: all 0.22s ease;
  font-family: var(--sans);
}
.scene-item i {
  font-style: normal;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  letter-spacing: 0.1em;
}
.scene-item:hover { color: var(--text); background: var(--panel); }
.scene-item.is-active {
  color: var(--text);
  background: var(--panel-2);
  border-color: rgba(201, 242, 109, 0.5);
}
.scene-item.is-active i { color: var(--lime); }

.scene-detail {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 42px 46px;
  min-height: 420px;
}
.scene-detail.is-switching { animation: sceneIn 0.4s ease; }
@keyframes sceneIn {
  from { opacity: 0.2; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
.scene-detail-top { display: flex; align-items: baseline; gap: 18px; margin-bottom: 30px; flex-wrap: wrap; }
.scene-no { font-family: var(--mono); font-size: 15px; color: var(--lime); }
.scene-detail-top h3 { font-size: 27px; }
.scene-tag {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  padding: 5px 14px;
  border-radius: 999px;
  margin-left: auto;
}
.scene-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px 36px;
}
.scene-block h4 {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  color: var(--faint);
  font-weight: 500;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.scene-block h4::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
}
.scene-block p { color: var(--muted); font-size: 15px; }
.scene-block .kpi { color: var(--text); }

/* ---------- 交付路径 ---------- */
.path { background: var(--lift); border-bottom: 1px solid var(--line); }

.timeline { position: relative; margin-top: 12px; }
.timeline-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.timeline-bar i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--lime-2), var(--lime));
  transition: width 1.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding-top: 40px;
}
.tl-step {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.tl-step::before {
  content: "";
  position: absolute;
  top: -46px;
  left: 26px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 5px var(--lime-dim);
}
.tl-step:hover { border-color: rgba(201, 242, 109, 0.4); transform: translateY(-4px); }
.tl-day {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--lime);
  font-weight: 600;
}
.tl-step h3 { font-size: 20px; margin: 12px 0 10px; }
.tl-step p { color: var(--muted); font-size: 14.5px; }
.tl-step em {
  display: block;
  font-style: normal;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--faint);
  letter-spacing: 0.04em;
}

.guarantee {
  margin-top: 56px;
  display: flex;
  align-items: center;
  gap: 28px;
  background: linear-gradient(90deg, rgba(201, 242, 109, 0.1), rgba(201, 242, 109, 0.02));
  border: 1px solid rgba(201, 242, 109, 0.35);
  border-radius: var(--radius);
  padding: 28px 36px;
  flex-wrap: wrap;
}
.guarantee-badge {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--ink);
  background: var(--lime);
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
  white-space: nowrap;
}
.guarantee p { color: var(--muted); font-size: 15.5px; }
.guarantee b { color: var(--lime); }

/* ---------- 案例 · 客户证言 ---------- */
.quotes { background: var(--lift); border-bottom: 1px solid var(--line); }

.quote-main {
  position: relative;
  max-width: 980px;
  margin: 0;
  padding: 26px 0 0 76px;
}
.quote-mark {
  position: absolute;
  top: -34px;
  left: -8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 170px;
  line-height: 1;
  color: rgba(201, 242, 109, 0.16);
  pointer-events: none;
  user-select: none;
}
.quote-main blockquote {
  font-size: clamp(24px, 2.9vw, 36px);
  font-weight: 600;
  line-height: 1.65;
  letter-spacing: 0.01em;
}
.quote-main figcaption,
.quote-sub figcaption {
  margin-top: 26px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.q-who {
  font-size: 15px;
  font-weight: 600;
  padding-left: 14px;
  border-left: 2px solid var(--lime);
}
.q-what {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  padding: 5px 13px;
  border-radius: 999px;
}

.quote-sub-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  padding-left: 76px;
}
.quote-sub {
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 34px 28px;
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.quote-sub:hover { border-color: rgba(201, 242, 109, 0.35); transform: translateY(-3px); }
.quote-sub blockquote {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.9;
}
.quote-sub .q-who { font-size: 13.5px; }
.quote-sub figcaption { margin-top: 20px; }

/* ---------- 关于 ---------- */
.about { background: var(--lift); border-bottom: 1px solid var(--line); }
.about-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 70px;
  align-items: start;
}
.about-copy h2 { margin-bottom: 28px; }
.about-copy > p { color: var(--muted); margin-bottom: 18px; font-size: 15.5px; }

.badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.badges span {
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  padding: 8px 18px;
  border-radius: 999px;
}

.about-method {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 38px 34px;
}
.method-title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--faint);
  text-transform: uppercase;
  margin-bottom: 26px;
}
.method-list { list-style: none; }
.method-list li {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15.5px;
  color: var(--text);
}
.method-list li:last-child { border-bottom: 0; }
.method-list span { font-family: var(--mono); font-size: 12px; color: var(--lime); }
.method-note { margin-top: 22px; font-size: 13.5px; color: var(--faint); }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; }
.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s ease;
}
.faq-list details[open] { border-color: rgba(201, 242, 109, 0.4); }
.faq-list summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 28px;
  font-size: 16.5px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary i {
  font-style: normal;
  color: var(--lime);
  font-family: var(--mono);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-list details[open] summary i { transform: rotate(45deg); }
.faq-list details p {
  padding: 0 28px 24px;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- 联系 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 70px;
  align-items: start;
}
.contact-copy h2 { margin-bottom: 24px; }
.contact-copy > p { color: var(--muted); font-size: 15.5px; margin-bottom: 34px; }

.contact-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 30px; }
.contact-list a, .contact-list div {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: border-color 0.25s ease;
}
.contact-list a:hover { border-color: rgba(201, 242, 109, 0.45); }
.contact-list i {
  font-style: normal;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--lime-dim);
  color: var(--lime);
  flex-shrink: 0;
}
.contact-list small { display: block; font-size: 12px; color: var(--faint); letter-spacing: 0.06em; }
.contact-list b { font-size: 15px; font-weight: 600; }

.contact-hint {
  font-size: 13.5px;
  color: var(--faint);
  border-left: 2px solid rgba(201, 242, 109, 0.5);
  padding-left: 18px;
  line-height: 2;
}

.lead-form {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 42px 40px;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.is-full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; color: var(--muted); }
.field label b { color: var(--lime); font-weight: 500; }
.field input, .field textarea {
  background: var(--ink);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 13px 16px;
  color: var(--text);
  font-size: 15px;
  font-family: var(--sans);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  resize: vertical;
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--lime);
  box-shadow: 0 0 0 3px rgba(201, 242, 109, 0.15);
}
.field input::placeholder, .field textarea::placeholder { color: var(--faint); }

.form-foot {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 26px;
  flex-wrap: wrap;
}
.form-foot small { color: var(--faint); font-size: 12.5px; }
.form-status { margin-top: 16px; font-size: 14px; color: var(--lime); min-height: 22px; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); padding: 70px 0 40px; background: var(--ink); }
.footer-top {
  display: grid;
  grid-template-columns: 1.3fr 0.75fr 1.15fr;
  gap: 50px;
  padding-bottom: 50px;
}
.footer-desc { color: var(--faint); font-size: 14px; margin-top: 20px; max-width: 340px; }
.footer h3 {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--faint);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 18px;
}
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: var(--muted); font-size: 14.5px; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--lime); }
.nowrap { white-space: nowrap; }
.footer-addr { margin-top: 26px; }
.footer-addr-label { color: var(--muted); font-size: 14.5px; }
.footer-addr-value {
  display: inline;
  font-style: normal;
  color: var(--muted);
  font-size: 14.5px;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--faint);
  font-size: 13px;
}
.footer-bottom a { color: var(--faint); }
.footer-bottom a:hover { color: var(--muted); }
.footer-tag { font-family: var(--mono); letter-spacing: 0.14em; font-size: 11px; }

/* ---------- 入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.12s; }
.reveal[data-delay="2"] { transition-delay: 0.24s; }
.reveal[data-delay="3"] { transition-delay: 0.36s; }
.reveal[data-delay="4"] { transition-delay: 0.48s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .ticker-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .section { padding: 90px 0; }
  .why-grid { grid-template-columns: 1fr; }
  .quote-main { padding-left: 0; padding-top: 44px; }
  .quote-mark { top: -20px; font-size: 120px; }
  .quote-sub-grid { grid-template-columns: 1fr; padding-left: 0; }
  .logo-wall.is-wide { grid-template-columns: repeat(6, 1fr); gap: 9px; }
  .logo-wall.is-wide .logo-chip { height: 60px; }
  .partners .logo-wall.is-partners { grid-template-columns: repeat(2, 1fr); max-width: none; }
  .scene-matrix { grid-template-columns: 1fr; }
  .scene-list { flex-direction: row; overflow-x: auto; padding-bottom: 6px; }
  .scene-item { white-space: nowrap; flex-shrink: 0; }
  .scene-detail { padding: 30px 26px; }
  .scene-detail-body { grid-template-columns: 1fr; }
  .timeline-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .timeline-bar { display: none; }
  .timeline-grid { padding-top: 0; }
  .tl-step::before { display: none; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 50px; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(28, 36, 47, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 10px 28px 24px;
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 15px 0; border-bottom: 1px solid var(--line); font-size: 16px; }
  .nav-links a.is-active::after { display: none; }
  .nav-cta { margin-top: 18px; text-align: center; }
}

@media (max-width: 620px) {
  .timeline-grid, .form-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .lead-form { padding: 30px 22px; }
  .logo-wall { grid-template-columns: repeat(2, 1fr); }
  .logo-wall.is-wide { grid-template-columns: repeat(4, 1fr); gap: 8px; }
  .logo-wall.is-wide .logo-chip { height: 54px; }
  .logo-wall.is-partners { grid-template-columns: repeat(2, 1fr); }
  .guarantee { padding: 24px; }
}