/* ==========================================================================
   想享日食 · 天然发酵原料及解决方案 — 官网全局样式
   品牌色：主绿 #059B37 / 辅助绿 #99CC35 / 暖白 #FBFBF7 / 浅灰绿 #EDF6E7
   ========================================================================== */

:root {
  --green: #059B37;
  --green-dark: #03752a;
  --green-light: #99CC35;
  --green-tint: #EDF6E7;
  --green-tint-2: #F3F9EE;
  --warm-bg: #FBFBF7;
  --ink: #1f2a23;
  --ink-2: #3f4c44;
  --ink-3: #6b7a70;
  --line: #e4e9e2;
  --white: #ffffff;
  --warn: #8a6d1a;
  --warn-bg: #fdf6e3;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 1px 3px rgba(30, 50, 35, .06), 0 1px 2px rgba(30, 50, 35, .04);
  --shadow-md: 0 8px 24px rgba(30, 50, 35, .08);
  --maxw: 1160px;
  --font: "PingFang SC", "Microsoft YaHei", "微软雅黑", "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--warm-bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-dark); }
ul, ol { padding-left: 1.4em; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  cursor: pointer; border: 1px solid transparent; transition: all .2s ease;
  text-align: center; line-height: 1.4;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); color: #fff; transform: translateY(-1px); }
.btn-outline { background: #fff; color: var(--green); border-color: var(--green); }
.btn-outline:hover { background: var(--green-tint); color: var(--green-dark); }
.btn-ghost { background: transparent; color: var(--green); }
.btn-ghost:hover { color: var(--green-dark); }
.btn-sm { padding: 9px 18px; font-size: 14px; }
.btn-lg { padding: 15px 34px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- 页眉 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 10px; background: var(--green);
  display: flex; align-items: center; justify-content: center; color: #fff;
  font-weight: 700; font-size: 18px; flex-shrink: 0;
}
.brand-logo {
  width: 44px; height: 44px; border-radius: 10px; object-fit: contain;
  background: #fff; border: 1px solid var(--line); flex-shrink: 0;
}
.brand-text { line-height: 1.2; }
.brand-name { font-weight: 700; font-size: 17px; color: var(--ink); }
.brand-sub { font-size: 12px; color: var(--ink-3); letter-spacing: .5px; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  color: var(--ink-2); padding: 8px 14px; border-radius: 8px; font-size: 15px; font-weight: 500;
  transition: all .15s ease;
}
.nav a:hover { color: var(--green); background: var(--green-tint-2); }
.nav a.active { color: var(--green); background: var(--green-tint); font-weight: 600; }
.nav-cta { margin-left: 10px; }
.nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--ink); }

/* ---------- 移动端导航 ---------- */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 12px 20px 20px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 10px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav-cta { margin: 12px 0 0; }
}

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }
.section-alt { background: #fff; }
.section-tint { background: var(--green-tint-2); }
.section-head { max-width: 720px; margin-bottom: 42px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 1px;
  color: var(--green); text-transform: uppercase; margin-bottom: 12px;
}
.section-title { font-size: 30px; line-height: 1.35; color: var(--ink); font-weight: 700; margin-bottom: 14px; }
.section-lead { font-size: 16px; color: var(--ink-2); }

/* ---------- 首屏 Hero ---------- */
.hero {
  padding: 84px 0 72px;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(153, 204, 53, .16), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(5, 155, 55, .08), transparent 55%),
    var(--warm-bg);
}
.hero .container { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.hero-title { font-size: 42px; line-height: 1.25; font-weight: 800; color: var(--ink); margin-bottom: 18px; }
.hero-title .hl { color: var(--green); }
.hero-sub { font-size: 17px; color: var(--ink-2); max-width: 520px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 20px; font-size: 13px; color: var(--ink-3); }
.hero-visual {
  background: #fff; border: 1px solid var(--line); border-radius: 20px;
  padding: 30px; box-shadow: var(--shadow-md);
}
.hero-visual .pv-label { font-size: 12px; color: var(--ink-3); margin-bottom: 14px; letter-spacing: .5px; }
.pv-chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.pv-chip { font-size: 13px; padding: 6px 14px; border-radius: 999px; background: var(--green-tint); color: var(--green-dark); font-weight: 600; }
.pv-fact { display: flex; gap: 12px; align-items: flex-start; padding: 12px 0; border-bottom: 1px solid var(--line); }
.pv-fact:last-child { border-bottom: none; }
.pv-fact b { color: var(--green); font-size: 18px; display: block; line-height: 1.2; }
.pv-fact span { font-size: 14px; color: var(--ink-2); }

/* ---------- 问题入口 ---------- */
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.pain-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: all .2s ease;
}
.pain-card:hover { border-color: var(--green-light); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.pain-card .num { font-size: 13px; color: var(--green); font-weight: 700; letter-spacing: 1px; }
.pain-card h3 { font-size: 17px; margin: 10px 0 8px; color: var(--ink); }
.pain-card p { font-size: 14px; color: var(--ink-2); }
.pain-card .ans { margin-top: 12px; font-size: 13px; color: var(--green-dark); }

/* ---------- 首发产品 ---------- */
.product-spotlight {
  display: grid; grid-template-columns: .9fr 1.1fr; gap: 44px; align-items: center;
}
.ps-media {
  background: var(--green-tint-2); border-radius: 20px; min-height: 320px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden; border: 1px solid var(--line);
}
.ps-media .placeholder {
  text-align: center; color: var(--green); padding: 40px;
}
.ps-media .placeholder .icon { font-size: 72px; margin-bottom: 10px; }
.ps-media .placeholder p { font-size: 14px; color: var(--ink-3); }
.ps-body h2 { font-size: 28px; margin-bottom: 14px; }
.ps-body .tag { display: inline-block; font-size: 13px; background: var(--green-tint); color: var(--green-dark); padding: 4px 12px; border-radius: 999px; margin-bottom: 14px; font-weight: 600; }
.ps-body p { color: var(--ink-2); margin-bottom: 14px; }
.ps-list { list-style: none; padding: 0; margin: 0 0 20px; }
.ps-list li { padding: 8px 0 8px 26px; position: relative; color: var(--ink-2); font-size: 15px; }
.ps-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }

/* ---------- 应用方向 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.app-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; transition: all .2s ease;
}
.app-card:hover { border-color: var(--green-light); box-shadow: var(--shadow-md); }
.app-card .ico { width: 46px; height: 46px; border-radius: 12px; background: var(--green-tint); display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 16px; }
.app-card h3 { font-size: 18px; margin-bottom: 10px; }
.app-card p { font-size: 14px; color: var(--ink-2); margin-bottom: 12px; }
.app-card .link { font-size: 14px; font-weight: 600; }
.app-caveat { margin-top: 18px; font-size: 13px; color: var(--ink-3); text-align: center; }

/* ---------- 质量资料 ---------- */
.quality-split { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.quality-points { list-style: none; padding: 0; }
.quality-points li { padding: 13px 0 13px 32px; position: relative; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.quality-points li::before { content: ""; position: absolute; left: 0; top: 19px; width: 14px; height: 14px; border-radius: 50%; background: var(--green-light); }
.quality-box {
  background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 30px;
  box-shadow: var(--shadow-sm);
}
.quality-box h3 { font-size: 19px; margin-bottom: 16px; color: var(--ink); }
.quality-box ul { margin-bottom: 6px; }
.quality-box li { margin-bottom: 10px; color: var(--ink-2); font-size: 15px; }

/* ---------- 合作流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.step { text-align: center; }
.step .dot {
  width: 44px; height: 44px; border-radius: 50%; background: var(--green-tint);
  color: var(--green-dark); font-weight: 700; font-size: 18px;
  display: flex; align-items: center; justify-content: center; margin: 0 auto 12px;
}
.step h4 { font-size: 15px; margin-bottom: 4px; }
.step p { font-size: 13px; color: var(--ink-3); }

/* ---------- 知识中心 ---------- */
.know-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.know-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: all .2s ease; display: flex; flex-direction: column;
}
.know-card:hover { border-color: var(--green-light); box-shadow: var(--shadow-md); }
.know-card .cat { font-size: 12px; color: var(--green); font-weight: 700; letter-spacing: .5px; }
.know-card h3 { font-size: 16px; margin: 8px 0 10px; line-height: 1.45; }
.know-card p { font-size: 14px; color: var(--ink-2); flex: 1; }
.know-card .more { margin-top: 14px; font-weight: 600; font-size: 14px; }

/* ---------- 最终转化 CTA ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
  color: #fff; border-radius: 24px; padding: 54px 48px; text-align: center;
  position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 240px; height: 240px;
  background: rgba(255,255,255,.08); border-radius: 50%;
}
.cta-band h2 { font-size: 30px; margin-bottom: 14px; }
.cta-band p { font-size: 16px; opacity: .92; max-width: 620px; margin: 0 auto 26px; }
.cta-band .btn-primary { background: #fff; color: var(--green-dark); }
.cta-band .btn-primary:hover { background: var(--green-tint); }
.cta-band .btn-outline { background: transparent; color: #fff; border-color: #fff; }
.cta-band .btn-outline:hover { background: rgba(255,255,255,.12); }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer { background: #142118; color: #b8c4ba; padding: 60px 0 30px; font-size: 14px; }
.site-footer .container { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-sub { color: #7f8f84; }
.footer-brand p { margin-top: 14px; color: #9fb0a5; line-height: 1.7; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 600; }
.site-footer ul { list-style: none; padding: 0; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer a { color: #b8c4ba; }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); margin-top: 44px; padding-top: 24px;
  text-align: center; color: #7f8f84; font-size: 13px;
}
.footer-bottom .icp { margin-top: 6px; }
.footer-bottom a { color: #7f8f84; }

/* ---------- 内页 Hero ---------- */
.page-hero { background: var(--green-tint-2); padding: 56px 0; border-bottom: 1px solid var(--line); }
.page-hero .breadcrumb { font-size: 13px; color: var(--ink-3); margin-bottom: 12px; }
.page-hero .breadcrumb a { color: var(--ink-3); }
.page-hero h1 { font-size: 34px; line-height: 1.3; color: var(--ink); margin-bottom: 12px; }
.page-hero .lead { font-size: 16px; color: var(--ink-2); max-width: 720px; }

/* ---------- 内容排版 ---------- */
.prose { max-width: 820px; }
.prose h2 { font-size: 24px; margin: 40px 0 16px; color: var(--ink); }
.prose h3 { font-size: 19px; margin: 28px 0 12px; color: var(--ink); }
.prose p { margin-bottom: 16px; color: var(--ink-2); }
.prose ul, .prose ol { margin-bottom: 16px; color: var(--ink-2); }
.prose li { margin-bottom: 8px; }

/* ---------- 卡片 / 网格 ---------- */
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.card h3 { font-size: 18px; margin-bottom: 10px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; margin: 20px 0; }
table.data { width: 100%; border-collapse: collapse; font-size: 14px; background: #fff; }
table.data th, table.data td { padding: 12px 16px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
table.data th { background: var(--green-tint-2); color: var(--ink); font-weight: 600; }
table.data td { color: var(--ink-2); }

/* ---------- 提示框 ---------- */
.notice { background: var(--warn-bg); border: 1px solid #f0e0b8; border-left: 4px solid var(--warn); border-radius: 8px; padding: 16px 20px; margin: 20px 0; font-size: 14px; color: #6b5614; }
.notice b { color: #5a470f; }
.notice-green { background: var(--green-tint); border-color: #cfe6d0; border-left-color: var(--green); color: #14552a; }
.notice-green b { color: #0d4a23; }

/* ---------- 表单 ---------- */
.form-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 34px; box-shadow: var(--shadow-sm); max-width: 640px; }
.form-card h2 { font-size: 22px; margin-bottom: 8px; }
.form-card .form-sub { font-size: 14px; color: var(--ink-3); margin-bottom: 24px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 7px; color: var(--ink); }
.form-group label .req { color: #d33; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: 9px;
  font-size: 15px; font-family: var(--font); color: var(--ink); background: #fff;
  transition: border-color .15s ease;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--green); box-shadow: 0 0 0 3px rgba(5,155,55,.1);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-privacy { font-size: 12px; color: var(--ink-3); margin-top: 14px; line-height: 1.6; }
.form-success { display: none; background: var(--green-tint); border: 1px solid #cfe6d0; border-radius: 10px; padding: 18px 20px; color: #14552a; margin-bottom: 18px; font-size: 14px; }
.form-success.show { display: block; }

/* ---------- FAQ ---------- */
.faq-item { border: 1px solid var(--line); border-radius: 12px; margin-bottom: 12px; overflow: hidden; background: #fff; }
.faq-q { width: 100%; text-align: left; background: none; border: none; padding: 18px 22px; font-size: 16px; font-weight: 600; color: var(--ink); cursor: pointer; display: flex; justify-content: space-between; align-items: center; font-family: var(--font); }
.faq-q::after { content: "+"; font-size: 22px; color: var(--green); font-weight: 400; }
.faq-item.open .faq-q::after { content: "−"; }
.faq-a { display: none; padding: 0 22px 20px; color: var(--ink-2); font-size: 15px; }
.faq-item.open .faq-a { display: block; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-title { font-size: 32px; }
  .pain-grid, .app-grid, .know-grid, .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .product-spotlight, .quality-split { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; gap: 20px; }
  .site-footer .container { grid-template-columns: 1fr 1fr; }
  .section { padding: 52px 0; }
  .page-hero h1 { font-size: 28px; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .site-footer .container { grid-template-columns: 1fr; }
  .hero-actions, .cta-actions { flex-direction: column; }
  .btn { width: 100%; }
}