/* ============================================================
   EquaSight 品牌层 V2 — 67号施工图 §一
   组件层(bootstrap 网格/font-awesome/spacing)之后加载,覆盖品牌系统
   零 JS:交互全部 CSS(:hover/details/animation)
   ============================================================ */

:root {
  --eq-green: #0d5c3f;
  --eq-green-light: #e8efe9;
  --eq-ink: #1a1a1a;
  --eq-paper: #faf8f5;
  --eq-warm: #8a7968;
  --eq-gold: #b8860b;
  --eq-serif: "Fraunces", "Noto Serif SC", "Songti SC", Georgia, serif;
  --eq-sans: "Noto Sans SC", "PingFang SC", system-ui, sans-serif;
}

/* ---------- 基线 ---------- */
html { overflow-x: clip; }
body {
  font-family: var(--eq-sans);
  background: var(--eq-paper);
  color: var(--eq-ink);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: clip;
}
a { color: var(--eq-green); text-decoration: none; }
a:hover { color: var(--eq-gold); }
::selection { background: var(--eq-green); color: #fff; }

.eq-serif { font-family: var(--eq-serif); }
.eq-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--eq-gold);
  font-weight: 600;
}
.eq-cn { color: var(--eq-warm); }

/* ---------- 导航(全页共用) ---------- */
.eq-nav {
  border-bottom: 1px solid rgba(26,26,26,.08);
  background: var(--eq-paper);
}
.eq-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  gap: 24px;
}
.eq-logo {
  font-family: var(--eq-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--eq-ink);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.eq-logo:hover { color: var(--eq-green); }
.eq-logo .eq-logo-dot { color: var(--eq-green); }
.eq-nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.eq-nav-links a {
  font-size: 0.9rem;
  color: var(--eq-ink);
  white-space: nowrap;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.eq-nav-links a:hover { color: var(--eq-green); border-bottom-color: var(--eq-green); }
.eq-nav-links a.eq-active { color: var(--eq-green); border-bottom-color: var(--eq-green); }
.eq-nav-links .eq-nav-cn { display: block; font-size: 0.65rem; color: var(--eq-warm); letter-spacing: 0.15em; }

/* ---------- 首页 Hero ---------- */
.eq-hero {
  position: relative;
  padding: 110px 0 90px;
  background: linear-gradient(160deg, var(--eq-paper) 55%, var(--eq-green-light));
}
.eq-hero-badge {
  position: absolute;
  right: 7%;
  bottom: 44px;
  color: var(--eq-green);
  z-index: 1;
}
@media (min-width: 992px) { .eq-hero { padding: 150px 0 120px; } }
.eq-hero h1 {
  font-family: var(--eq-serif);
  font-size: 2.2rem;
  line-height: 1.15;
  font-weight: 700;
  color: var(--eq-ink);
  margin: 18px 0 14px;
}
@media (min-width: 992px) { .eq-hero h1 { font-size: 3.5rem; } }
.eq-hero-cn {
  font-size: 1.05rem;
  color: var(--eq-warm);
  margin-bottom: 14px;
}
.eq-hero-en {
  font-size: 0.95rem;
  max-width: 34em;
  margin-bottom: 10px;
}
.eq-hero-body-cn { font-size: 0.85rem; color: var(--eq-warm); max-width: 30em; margin-bottom: 26px; }

.eq-btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 2px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all .2s ease;
}
.eq-btn-primary { background: var(--eq-green); color: #fff; border: 1px solid var(--eq-green); }
.eq-btn-primary:hover { background: #0a4a32; color: #fff; border-color: #0a4a32; }
.eq-btn-ghost { background: transparent; color: var(--eq-ink); border: 1px solid rgba(26,26,26,.35); }
.eq-btn-ghost:hover { border-color: var(--eq-green); color: var(--eq-green); }
.eq-btn-white { background: #fff; color: var(--eq-green); border: 1px solid #fff; }
.eq-btn-white:hover { background: var(--eq-green-light); color: var(--eq-green); border-color: var(--eq-green-light); }

/* Hero 名片卡 */
.eq-card-note {
  background: var(--eq-green-light);
  border-radius: 12px;
  padding: 28px;
  max-width: 380px;
  margin-left: auto;
}
.eq-card-note h3 {
  font-family: var(--eq-serif);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 2px;
}
.eq-card-note .eq-note-cn { font-size: 0.85rem; color: var(--eq-warm); margin-bottom: 12px; }
.eq-card-note .eq-note-tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--eq-green);
  background: rgba(13,92,63,.1);
  border-radius: 3px;
  padding: 3px 10px;
  margin-bottom: 14px;
}
.eq-card-note .eq-note-data {
  font-size: 0.85rem;
  color: var(--eq-ink);
  border-top: 1px dashed rgba(13,92,63,.3);
  padding-top: 12px;
  margin-bottom: 10px;
}
.eq-card-note .eq-note-link { font-size: 0.85rem; font-weight: 600; }

/* ---------- 区块通用 ---------- */
.eq-section { padding: 90px 0; }
@media (min-width: 992px) { .eq-section { padding: 130px 0; } }
.eq-section-white { background: #fff; }
.eq-section-dark { background: var(--eq-ink); }
.eq-section-green { background: var(--eq-green); }

/* ---------- About 三行服务 ---------- */
.eq-service-row {
  display: block;
  padding: 30px 0;
  border-top: 1px solid rgba(26,26,26,.12);
  transition: all .2s ease;
}
.eq-service-row:last-child { border-bottom: 1px solid rgba(26,26,26,.12); }
.eq-service-row:hover { border-top-color: var(--eq-ink); }
.eq-service-no {
  font-family: var(--eq-serif);
  font-size: 1.9rem;
  line-height: 1;
  color: var(--eq-warm);
  display: inline-block;
  margin-bottom: 6px;
  transition: color .2s ease;
}
.eq-service-row:hover .eq-service-no { color: var(--eq-green); }
.eq-service-title { font-family: var(--eq-serif); font-size: 1.35rem; font-weight: 700; margin: 0; }
.eq-service-title .eq-service-title-cn { font-family: var(--eq-sans); font-size: 0.85rem; font-weight: 400; color: var(--eq-warm); margin-left: 10px; }
.eq-service-desc { font-size: 0.9rem; color: #4a4a4a; max-width: 46em; margin: 8px 0 0; }

/* ---------- Portfolio 深色区+卡片 ---------- */
.eq-dark-head-tag { font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase; color: rgba(255,255,255,.5); }
.eq-dark-title { font-family: var(--eq-serif); font-size: 2.5rem; font-weight: 700; color: #fff; margin: 10px 0 4px; }
.eq-dark-cn { font-size: 0.95rem; color: rgba(255,255,255,.5); }

.eq-site-card {
  background: #242424;
  border-radius: 10px;
  overflow: hidden;
  transition: transform .25s ease;
}
.eq-site-card:hover { transform: translateY(-4px); }
.eq-site-preview {
  aspect-ratio: 16 / 10;
  background: var(--eq-green-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: filter .25s ease;
  filter: saturate(.85);
}
.eq-site-card:hover .eq-site-preview { filter: saturate(1.05); }
.eq-site-preview i { font-size: 2.4rem; color: var(--eq-green); }
.eq-site-preview .eq-preview-name { font-family: var(--eq-serif); font-size: 1.15rem; color: var(--eq-ink); font-weight: 700; }
.eq-site-body { padding: 24px 26px 28px; }
.eq-site-tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6fcfa3;
  margin-bottom: 8px;
}
.eq-site-name { font-family: var(--eq-serif); font-size: 1.3rem; font-weight: 700; color: #fff; margin: 0 0 2px; }
.eq-site-cn { font-size: 0.9rem; color: rgba(255,255,255,.55); margin-bottom: 6px; }
.eq-site-data { font-size: 0.8rem; color: var(--eq-gold); margin-bottom: 12px; }
.eq-site-link { font-size: 0.9rem; font-weight: 600; color: #6fcfa3; }
.eq-site-link:hover { color: #fff; }

.eq-dark-cta { text-align: center; margin-top: 70px; }
.eq-dark-cta .eq-dark-cta-title { font-family: var(--eq-serif); font-size: 1.6rem; color: #fff; }
.eq-dark-cta .eq-dark-cta-cn { font-size: 0.9rem; color: rgba(255,255,255,.5); margin: 4px 0 18px; }

/* ---------- 数据绿带 ---------- */
.eq-stat { text-align: center; padding: 20px 10px; }
.eq-stat-no { font-family: var(--eq-serif); font-size: 3rem; font-weight: 700; color: #fff; line-height: 1.1; }
.eq-stat-label { font-size: 0.8rem; color: rgba(255,255,255,.7); letter-spacing: 0.08em; text-transform: uppercase; }
.eq-stat-cn { font-size: 0.7rem; color: rgba(255,255,255,.5); }

/* ---------- AI Watching 引用区 ---------- */
.eq-watch { text-align: center; max-width: 760px; margin: 0 auto; }
.eq-watch .eq-watch-quote { font-family: var(--eq-serif); font-size: 4rem; line-height: .6; color: var(--eq-green); display: block; margin-bottom: 18px; }
.eq-watch-text {
  font-family: var(--eq-serif);
  font-style: italic;
  font-size: 1.35rem;
  line-height: 1.6;
  color: var(--eq-ink);
}
@media (min-width: 768px) { .eq-watch-text { font-size: 1.6rem; } }
.eq-watch-cn { font-size: 0.9rem; color: var(--eq-warm); margin-top: 18px; }
.eq-watch-src { font-size: 0.7rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--eq-gold); margin-top: 22px; }

/* ---------- CTA 区 ---------- */
.eq-cta { text-align: center; padding: 90px 0; }
.eq-cta .eq-cta-title { font-family: var(--eq-serif); font-size: 2rem; font-weight: 700; color: #fff; margin: 0 0 6px; }
.eq-cta .eq-cta-cn { font-size: 0.95rem; color: rgba(255,255,255,.6); margin-bottom: 26px; }

/* ---------- Footer ---------- */
.eq-footer {
  background: var(--eq-ink);
  color: rgba(255,255,255,.65);
  padding: 44px 0;
  font-size: 0.82rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.eq-footer a { color: rgba(255,255,255,.65); }
.eq-footer a:hover { color: #fff; }
.eq-footer .eq-footer-brand { color: #fff; font-family: var(--eq-serif); font-size: 1rem; }
.eq-footer-links { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }

/* ---------- 子页 Page Header ---------- */
.eq-pagehead {
  padding: 80px 0 60px;
  background: linear-gradient(160deg, var(--eq-paper) 55%, var(--eq-green-light));
  border-bottom: 1px solid rgba(26,26,26,.06);
}
.eq-pagehead h1 { font-family: var(--eq-serif); font-size: 2.4rem; font-weight: 700; margin: 12px 0 6px; }
.eq-pagehead .eq-pagehead-cn { font-size: 0.95rem; color: var(--eq-warm); }

/* ---------- How-it-works 步骤 ---------- */
.eq-step {
  position: relative;
  display: flex;
  gap: 28px;
  padding: 34px 0;
  border-top: 1px solid rgba(26,26,26,.12);
  counter-increment: eqstep;
}
/* 背景层超大半透明衬线序号(纯 CSS counter,零 HTML 改动) */
.eq-step::before {
  content: "0" counter(eqstep);
  position: absolute;
  top: 18px;
  right: 2%;
  font-family: var(--eq-serif);
  font-size: 4.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--eq-ink);
  opacity: .07;
  pointer-events: none;
}
.eq-steps { counter-reset: eqstep; }
.eq-step:last-child { border-bottom: 1px solid rgba(26,26,26,.12); }
.eq-step-no {
  font-family: var(--eq-serif);
  font-size: 1rem;
  color: var(--eq-gold);
  min-width: 64px;
  padding-top: 4px;
  letter-spacing: 0.08em;
}
.eq-step h2 { font-family: var(--eq-serif); font-size: 1.35rem; font-weight: 700; margin: 0 0 2px; }
.eq-step .eq-step-cn { font-size: 0.85rem; color: var(--eq-warm); margin-bottom: 8px; }
.eq-step p { font-size: 0.92rem; color: #4a4a4a; margin: 0; }

/* ---------- FAQ(details 零JS折叠) ---------- */
.eq-faq-item { border-bottom: 1px solid rgba(26,26,26,.12); }
.eq-faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 24px 0;
  font-family: var(--eq-serif);
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: baseline;
  gap: 16px;
}
.eq-faq-item summary::-webkit-details-marker { display: none; }
.eq-faq-item summary .eq-faq-q-cn { display: block; font-family: var(--eq-sans); font-size: 0.8rem; font-weight: 400; color: var(--eq-warm); }
.eq-faq-answer { padding: 0 0 26px; font-size: 0.92rem; color: #4a4a4a; max-width: 46em; }

/* ---------- Contact ---------- */
.eq-contact-block { max-width: 640px; }
.eq-contact-list { list-style: none; margin: 30px 0 0; padding: 0; }
.eq-contact-list li {
  padding: 18px 0;
  border-top: 1px solid rgba(26,26,26,.12);
  font-size: 0.95rem;
  display: flex;
  gap: 14px;
  align-items: baseline;
}
.eq-contact-list li:last-child { border-bottom: 1px solid rgba(26,26,26,.12); }
.eq-contact-list .eq-contact-label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--eq-warm);
  min-width: 110px;
}

/* ---------- 图片层(V2.2:截图+Unsplash 氛围图) ---------- */
.eq-img {
  border-radius: 10px;
  overflow: hidden;
  background: var(--eq-green-light);
}
/* 全宽通栏图(杂志节奏:文字区块后的图呼吸,21/9) */
.eq-img-wide { aspect-ratio: 21 / 9; }
/* 步骤旁 sticky 侧栏图(桌面) */
.eq-sticky-side { position: sticky; top: 110px; }
.eq-img img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--eq-ease-out, ease);
}
.eq-img:hover img { transform: scale(1.04); }
/* Portfolio 卡片真截图(替换纯色预览区) */
.eq-site-preview img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform .5s ease;
}
.eq-site-card:hover .eq-site-preview img { transform: scale(1.04); }
.eq-site-preview { position: relative; }
.eq-screenshot-badge {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  font-family: var(--eq-font-mono, ui-monospace, monospace);
  font-size: .62rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(26,26,26,.55);
  backdrop-filter: blur(4px);
  border-radius: 3px;
  padding: 4px 10px;
}

/* ---------- 进场动画(CSS only, hero stagger) ---------- */
@keyframes eqFadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
.eq-anim { opacity: 0; animation: eqFadeUp .7s ease forwards; }
.eq-d1 { animation-delay: .1s; }
.eq-d2 { animation-delay: .2s; }
.eq-d3 { animation-delay: .3s; }
.eq-d4 { animation-delay: .45s; }
@media (prefers-reduced-motion: reduce) {
  .eq-anim { animation: none; opacity: 1; }
}

/* ---------- 响应式 <768px ---------- */
@media (max-width: 767.98px) {
  body { font-size: 15px; }
  .eq-nav-inner { padding: 16px 0; }
  .eq-logo { font-size: 1.25rem; }
  .eq-nav-links { gap: 18px; }
  .eq-nav-links .eq-nav-cn { display: none; }
  .eq-hero { padding: 70px 0 60px; }
  .eq-card-note { margin-left: 0; }
  .eq-stat-no { font-size: 2.2rem; }
  .eq-stat { padding: 14px 6px; }
  .eq-section { padding: 64px 0; }
  .eq-step { flex-direction: column; gap: 6px; padding: 26px 0; }
  .eq-step-no { min-width: auto; }
  .eq-dark-title { font-size: 1.9rem; }
  .eq-footer { text-align: center; }
  .eq-footer .row > [class*="col-"] { margin-bottom: 14px; }
  .eq-contact-list .eq-contact-label { min-width: 90px; }
  a.eq-btn { min-height: 44px; display: inline-flex; align-items: center; }
  .eq-hero-badge { display: none; }
  .eq-img-wide { aspect-ratio: 16 / 10; }
  .eq-step::before { font-size: 3rem; top: 20px; }
  .eq-service-no { font-size: 1.4rem; }
}