/* =========================================================
   家庭宠物档案 — bushiyy.cloud 首页样式
   美学：温暖的纸质账簿 / 手写档案
   ========================================================= */

:root {
  --paper: #f4ece1;          /* 主底色，奶油 */
  --paper-deep: #e8dcc5;     /* 副底色，焦糖奶油 */
  --ink: #2a1d12;            /* 主字色，深棕近黑 */
  --ink-soft: #5b4632;       /* 副字色 */
  --ink-mute: #8a7259;       /* 弱文字 */
  --accent: #c97b3f;         /* 点缀色，焦糖橙 */
  --accent-deep: #a25a25;    /* 深焦糖 */
  --rule: #b89c78;           /* 边线色 */
  --rule-soft: #d8c2a3;      /* 弱边线 */
  --shadow: 0 1px 0 rgba(43, 30, 18, 0.06),
            0 18px 40px -22px rgba(43, 30, 18, 0.35);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 300;
  color: var(--ink);
  background:
    radial-gradient(1200px 800px at 85% -10%, #f8efd9 0%, transparent 60%),
    radial-gradient(900px 700px at -10% 110%, #ecdfc2 0%, transparent 55%),
    var(--paper);
  min-height: 100vh;
  line-height: 1.7;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

/* ---- 纸纹噪点（叠在背景上） ---- */
.paper-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.32;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.18  0 0 0 0 0.12  0 0 0 0 0.06  0 0 0 0.5 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.55'/></svg>");
}

.ledger {
  position: relative;
  z-index: 1;
  max-width: 880px;
  margin: 0 auto;
  padding: 56px 28px 48px;
}

/* ============ 顶部 masthead ============ */
.ledger__masthead {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.ledger__masthead::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: var(--rule-soft);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand__mark {
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--rule);
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
}
.brand__name {
  font-family: 'Noto Serif SC', 'Fraunces', serif;
  font-size: 22px;
  font-weight: 700;
  margin: 0;
  letter-spacing: 0.04em;
  color: var(--ink);
}
.brand__sub {
  margin: 2px 0 0;
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--ink-mute);
}
.masthead__date {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
}

/* ============ Hero ============ */
.hero {
  padding: 56px 0 24px;
}
.hero__eyebrow {
  font-family: 'Fraunces', serif;
  font-style: italic;
  letter-spacing: 0.16em;
  font-size: 12px;
  color: var(--accent-deep);
  margin: 0 0 12px;
}
.hero__title {
  font-family: 'Noto Serif SC', 'Fraunces', serif;
  font-size: clamp(34px, 5.2vw, 52px);
  line-height: 1.18;
  font-weight: 700;
  margin: 0 0 22px;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.hero__title em {
  font-style: italic;
  color: var(--accent-deep);
  font-family: 'Fraunces', 'Noto Serif SC', serif;
  font-weight: 500;
}
.hero__lede {
  font-size: 15.5px;
  color: var(--ink-soft);
  max-width: 520px;
  margin: 0;
  line-height: 1.85;
}

/* ============ 卡片：扫码 ============ */
.card {
  margin: 36px 0 48px;
  background: linear-gradient(180deg, #fbf4e6 0%, #f1e4cc 100%);
  border: 1px solid var(--rule);
  border-radius: 4px;
  box-shadow: var(--shadow);
  padding: 36px 32px 32px;
  position: relative;
  overflow: hidden;
  transform: translateY(8px);
  opacity: 0;
  animation: rise 0.9s cubic-bezier(.2,.7,.2,1) 0.15s forwards;
}
@keyframes rise {
  to { transform: translateY(0); opacity: 1; }
}

.card__rings {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  pointer-events: none;
  opacity: 0.45;
}
.card__rings span {
  position: absolute;
  border: 1px dashed var(--rule);
  border-radius: 50%;
}
.card__rings span:nth-child(1) { inset: 0; }
.card__rings span:nth-child(2) { inset: 30px; border-style: solid; opacity: 0.6; }
.card__rings span:nth-child(3) { inset: 60px; opacity: 0.35; }

.card__kicker {
  font-family: 'Fraunces', serif;
  font-style: italic;
  letter-spacing: 0.24em;
  font-size: 11px;
  color: var(--accent-deep);
  margin: 0 0 8px;
}
.card__title {
  font-family: 'Noto Serif SC', serif;
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 24px;
  color: var(--ink);
}

.qr {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 0 auto 24px;
  background: #fff;
  border: 1px solid var(--rule);
  padding: 14px;
  border-radius: 2px;
  box-shadow: 0 1px 0 #fff inset, 0 6px 20px -10px rgba(43,30,18,0.4);
}
.qr img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}
.qr__placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 13px;
  color: var(--ink-mute);
  background: repeating-linear-gradient(
    45deg,
    #fbf4e6,
    #fbf4e6 8px,
    #f0e3c8 8px,
    #f0e3c8 16px
  );
  padding: 20px;
  letter-spacing: 0.06em;
}
.qr__placeholder code {
  font-family: 'Fraunces', serif;
  background: var(--ink);
  color: var(--paper);
  padding: 1px 6px;
  border-radius: 2px;
  font-size: 12px;
}
.qr--fallback .qr__placeholder { display: flex; }

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px dashed var(--rule);
  padding-top: 18px;
}
.steps li {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}
.steps li span {
  font-family: 'Fraunces', serif;
  font-style: italic;
  color: var(--accent-deep);
  font-weight: 700;
}

/* ============ 能力列表 ============ */
.ledger-rows {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 4px 0;
  margin: 32px 0 56px;
}
.row {
  display: flex;
  gap: 24px;
  align-items: baseline;
  padding: 22px 4px;
  border-bottom: 1px dashed var(--rule-soft);
}
.row:last-child { border-bottom: none; }
.row__num {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 28px;
  color: var(--accent-deep);
  font-weight: 500;
  min-width: 56px;
  letter-spacing: 0.02em;
}
.row__body h4 {
  font-family: 'Noto Serif SC', serif;
  font-size: 17px;
  margin: 0 0 4px;
  color: var(--ink);
  font-weight: 700;
}
.row__body p {
  font-size: 14px;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.7;
}

/* ============ colophon + 备案 ============ */
.colophon {
  text-align: center;
  padding-top: 24px;
}
.colophon__line {
  font-family: 'Fraunces', serif;
  font-style: italic;
  letter-spacing: 0.3em;
  font-size: 11px;
  color: var(--ink-mute);
  margin: 0 0 12px;
}
.colophon__quote {
  font-family: 'Noto Serif SC', 'Fraunces', serif;
  font-style: italic;
  font-size: 18px;
  color: var(--ink-soft);
  margin: 0 0 28px;
  letter-spacing: 0.04em;
}

.beian {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 14px;
}
.beian__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12px;
  color: var(--ink-soft);
  text-decoration: none;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.5);
  transition: all 0.25s ease;
  font-family: 'Noto Sans SC', sans-serif;
}
.beian__link:hover {
  color: var(--ink);
  border-color: var(--accent-deep);
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px -6px rgba(162, 90, 37, 0.5);
}
.beian__link--muted {
  color: var(--ink-mute);
  border-style: dashed;
  border-color: var(--rule-soft);
  background: transparent;
}
.beian__link--muted:hover { border-style: solid; }
.beian__icon {
  display: inline-flex;
  color: var(--accent-deep);
}

.colophon__copy {
  font-size: 11.5px;
  color: var(--ink-mute);
  margin: 8px 0 0;
  letter-spacing: 0.04em;
}

/* ============ 响应式 ============ */
@media (max-width: 640px) {
  .ledger { padding: 36px 20px 40px; }
  .ledger__masthead { flex-direction: column; align-items: flex-start; gap: 8px; }
  .masthead__date { align-self: flex-end; }
  .hero { padding: 36px 0 16px; }
  .card { padding: 28px 20px 24px; }
  .qr { width: 180px; height: 180px; }
  .steps { flex-direction: column; gap: 8px; }
  .steps li { justify-content: flex-start; }
  .row { gap: 14px; }
  .row__num { font-size: 22px; min-width: 40px; }
  .beian { gap: 8px; }
  .beian__link { font-size: 11.5px; padding: 5px 10px; }
}

/* ============ 减弱动效偏好 ============ */
@media (prefers-reduced-motion: reduce) {
  .card { animation: none; transform: none; opacity: 1; }
  html { scroll-behavior: auto; }
}