/* ============================================================
   必佐营养 · 基础样式 · v0.2
   ============================================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body-zh);
  background: var(--c-secondary);
  color: var(--c-ink);
  line-height: 1.65;
  font-size: var(--fs-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  position: relative;
}

/* v0.2 · 纸感噪点:在 body 上叠 1% 颗粒,让平面有点"摸得到"的呼吸感 */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: var(--noise-1);
  background-size: 180px 180px;
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: multiply;
}
body > * { position: relative; z-index: 1; }

img, picture, video, svg { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; transition: color 0.2s var(--ease-std); }
a:hover { color: var(--c-primary); }

button { font-family: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display-zh);
  color: var(--c-ink);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.005em;
  text-wrap: balance;
}

h1 { font-size: var(--fs-h1); line-height: 1.18; letter-spacing: -0.01em; }
h2 { font-size: var(--fs-h2); line-height: 1.22; }
h3 { font-size: var(--fs-h3); line-height: 1.35; }
h4 { font-size: var(--fs-h4); }

p { font-size: var(--fs-body); line-height: 1.75; color: var(--c-ink-soft); text-wrap: pretty; }
p.lead { font-size: var(--fs-body-lg); line-height: 1.7; }

.eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
  font-family: var(--font-body-en);
}

.serif-en {
  font-family: var(--font-display-en);
  font-style: italic;
  letter-spacing: -0.01em;
}

/* 容器 */
.container { width: 100%; max-width: var(--container-default); margin: 0 auto; padding: 0 var(--s-5); }
.container-narrow { width: 100%; max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--s-5); }
.container-wide { width: 100%; max-width: var(--container-wide); margin: 0 auto; padding: 0 var(--s-5); }

/* 节奏 */
.section { padding: var(--s-9) 0; }
.section-sm { padding: var(--s-7) 0; }
.section-lg { padding: 160px 0; }
.section--surface { background: var(--c-surface); }
.section--secondary { background: var(--c-secondary); }
.section--secondary-warm { background: var(--c-secondary-warm); }
.section--primary { background: var(--c-primary); color: var(--c-white); }
.section--primary h1, .section--primary h2, .section--primary h3 { color: var(--c-white); }
.section--primary p, .section--primary .eyebrow { color: rgba(255,255,255,0.7); }

/* 按钮 · v0.2 微交互升级 */
.btn {
  display: inline-flex; align-items: center; gap: var(--s-2);
  font-family: var(--font-body-zh);
  font-size: 15px; font-weight: 500;
  padding: 14px 28px;
  border-radius: var(--r-sm);
  border: 1px solid transparent;
  position: relative;
  transition:
    background var(--dur-base) var(--ease-std),
    color var(--dur-base) var(--ease-std),
    border-color var(--dur-base) var(--ease-std),
    transform var(--dur-fast) var(--ease-std);
  white-space: nowrap;
  letter-spacing: 0.01em;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--c-primary); color: var(--c-white); }
.btn-primary:hover { background: var(--c-primary-dark); color: var(--c-white); }
.btn-primary:active { background: var(--c-primary-deeper); }
.btn-secondary { background: transparent; color: var(--c-primary); border-color: var(--c-primary); }
.btn-secondary:hover { background: var(--c-primary); color: var(--c-white); }
.btn-ghost { background: transparent; color: var(--c-ink); padding: 10px 16px; }
.btn-ghost:hover { color: var(--c-primary); }
.btn-light { background: var(--c-white); color: var(--c-primary); }
.btn-light:hover { background: var(--c-secondary); color: var(--c-primary); }

/* 分隔线 */
hr.rule { border: none; border-top: 1px solid var(--c-border); margin: var(--s-6) 0; }
hr.rule--dotted { border: none; border-top: 1px dotted var(--c-border); margin: var(--s-6) 0; }
hr.rule--strong { border: none; border-top: 1px solid var(--c-border-strong); margin: var(--s-6) 0; }

/* 引文 */
blockquote {
  border-left: 3px solid var(--c-accent);
  padding: 4px 0 4px var(--s-4);
  margin: var(--s-4) 0;
  color: var(--c-muted);
  font-size: var(--fs-body-lg);
  font-style: italic;
  font-family: var(--font-display-zh);
  line-height: 1.75;
}

/* ============================================================
   v0.2 · 图片占位 — 升级为编辑感"交接清单"
   保留渐变底 + 文字,但加十字定位线 + 虚线内框,像摄影师 brief
   ============================================================ */
.photo-placeholder {
  position: relative;
  background: linear-gradient(135deg, var(--c-secondary) 0%, var(--c-border-soft) 100%);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column;
  gap: var(--s-2);
  color: var(--c-muted);
}
/* 内虚线框 */
.photo-placeholder::before {
  content: '';
  position: absolute; inset: 8px;
  border: 1px dashed var(--c-border-strong);
  border-radius: 2px;
  pointer-events: none;
}
/* 双色柔光 (保留原 ::after) */
.photo-placeholder::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(196,145,90,0.06) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(45,90,71,0.06) 0, transparent 40%);
  pointer-events: none;
}
/* 十字定位线 */
.photo-placeholder .ph-crosshair {
  position: absolute; inset: 0;
  pointer-events: none;
  z-index: 0;
}
.photo-placeholder .ph-crosshair::before,
.photo-placeholder .ph-crosshair::after {
  content: ''; position: absolute;
  background: var(--c-border-strong);
  opacity: 0.5;
}
.photo-placeholder .ph-crosshair::before {
  left: 50%; top: 0; bottom: 0;
  width: 1px; transform: translateX(-0.5px);
}
.photo-placeholder .ph-crosshair::after {
  top: 50%; left: 0; right: 0;
  height: 1px; transform: translateY(-0.5px);
}
.photo-placeholder .ph-label {
  font-family: var(--font-body-en);
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
  z-index: 1;
}
.photo-placeholder .ph-hint {
  font-family: var(--font-display-zh);
  font-size: 13px;
  color: var(--c-muted);
  z-index: 1;
}
.photo-placeholder .ph-frame {
  position: absolute; top: 16px; left: 16px;
  font-family: var(--font-body-en);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--c-muted);
  opacity: 0.7;
  z-index: 1;
}
.photo-placeholder .ph-ratio {
  position: absolute; bottom: 16px; right: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  opacity: 0.7;
  z-index: 1;
}

/* ========== 2026.06 真实图片接入 ========== */
/* 真实图模式下,占位 div 隐藏所有装饰元素并显示背景图 */
.photo-placeholder.has-img::before,
.photo-placeholder.has-img::after {
  content: none !important;
}
.photo-placeholder.has-img .ph-crosshair,
.photo-placeholder.has-img .ph-frame,
.photo-placeholder.has-img .ph-label,
.photo-placeholder.has-img .ph-hint,
.photo-placeholder.has-img .ph-ratio,
.ig-photo.has-img .ph-crosshair,
.ig-photo.has-img .ph-frame,
.ig-photo.has-img .ph-label,
.ig-photo.has-img .ph-hint,
.ig-photo.has-img .ph-ratio {
  display: none !important;
}

/* 谷蔬粉 / 食材 / hero 图均改用 <img> 标签接入,不再用 CSS 背景 */

/* 工具 */
.text-center { text-align: center; }
.muted { color: var(--c-muted); }
.muted-2 { color: var(--c-muted-2); }
.eyebrow-line { display: inline-flex; align-items: center; gap: var(--s-2); }
.eyebrow-line::before {
  content: ''; width: 24px; height: 1px; background: var(--c-accent);
}

/* 标签 */
.tag {
  display: inline-block;
  font-family: var(--font-body-en);
  font-size: var(--fs-eyebrow); font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 4px 10px;
  background: var(--c-primary-soft);
  color: var(--c-primary);
  border-radius: var(--r-sm);
}

/* ============================================================
   v0.2 · 箭头链接 — 细线从左长出 + 箭头同步淡入
   替代原版"→ 只移 4px"
   ============================================================ */
.arrow-link {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--c-primary); font-weight: 500;
  font-size: 15px;
  position: relative;
  padding-bottom: 2px;
}
.arrow-link::before {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 22px; height: 1px;
  background: var(--c-primary);
  transform-origin: left center;
  transition: width var(--dur-base) var(--ease-out);
}
.arrow-link::after {
  content: '→';
  font-family: var(--font-display-en);
  transition: transform var(--dur-base) var(--ease-out), letter-spacing var(--dur-base) var(--ease-out);
  letter-spacing: 0;
}
.arrow-link:hover {
  color: var(--c-primary-dark);
}
.arrow-link:hover::before { width: 100%; }
.arrow-link:hover::after { transform: translateX(4px); letter-spacing: 4px; }

/* 链接箭头 · 深色背景版 */
.arrow-link--on-dark { color: var(--c-white); }
.arrow-link--on-dark::before { background: var(--c-white); }
.arrow-link--on-dark:hover { color: var(--c-accent-soft); }
.arrow-link--on-dark:hover::before { background: var(--c-accent-soft); }

/* 全局焦点指示器(键盘可达性) */
:focus { outline: none; }
:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
  border-radius: 2px;
}
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
}
.btn:focus-visible {
  outline-offset: 4px;
  box-shadow: 0 0 0 4px rgba(45, 90, 71, 0.2);
}
/* 减弱动效 */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  body::before { display: none; }
}